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 | ||
8 | GNU Emacs is free software; you can redistribute it and/or modify | |
9 | it under the terms of the GNU General Public License as published by | |
684d6f5b | 10 | the Free Software Foundation; either version 3, or (at your option) |
570d7624 JB |
11 | any later version. |
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 | |
19 | along with GNU Emacs; see the file COPYING. If not, write to | |
4fc5845f LK |
20 | the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, |
21 | Boston, MA 02110-1301, USA. */ | |
570d7624 | 22 | |
18160b98 | 23 | #include <config.h> |
77a28bbf | 24 | #include <limits.h> |
570d7624 | 25 | |
612221ab | 26 | #ifdef HAVE_FCNTL_H |
bb369dc6 RS |
27 | #include <fcntl.h> |
28 | #endif | |
29 | ||
1b335d29 | 30 | #include <stdio.h> |
570d7624 JB |
31 | #include <sys/types.h> |
32 | #include <sys/stat.h> | |
bfb61299 | 33 | |
29beb080 RS |
34 | #ifdef HAVE_UNISTD_H |
35 | #include <unistd.h> | |
36 | #endif | |
37 | ||
f73b0ada BF |
38 | #if !defined (S_ISLNK) && defined (S_IFLNK) |
39 | # define S_ISLNK(m) (((m) & S_IFMT) == S_IFLNK) | |
40 | #endif | |
41 | ||
bb369dc6 RS |
42 | #if !defined (S_ISFIFO) && defined (S_IFIFO) |
43 | # define S_ISFIFO(m) (((m) & S_IFMT) == S_IFIFO) | |
44 | #endif | |
45 | ||
f73b0ada BF |
46 | #if !defined (S_ISREG) && defined (S_IFREG) |
47 | # define S_ISREG(m) (((m) & S_IFMT) == S_IFREG) | |
48 | #endif | |
49 | ||
5b9c0a1d | 50 | #ifdef HAVE_PWD_H |
570d7624 | 51 | #include <pwd.h> |
bfb61299 JB |
52 | #endif |
53 | ||
570d7624 | 54 | #include <ctype.h> |
bfb61299 JB |
55 | |
56 | #ifdef VMS | |
3d9f5ce2 | 57 | #include "vmsdir.h" |
bfb61299 JB |
58 | #include <perror.h> |
59 | #include <stddef.h> | |
60 | #include <string.h> | |
bfb61299 JB |
61 | #endif |
62 | ||
570d7624 JB |
63 | #include <errno.h> |
64 | ||
bfb61299 | 65 | #ifndef vax11c |
f12ef5eb | 66 | #ifndef USE_CRT_DLL |
570d7624 | 67 | extern int errno; |
570d7624 | 68 | #endif |
f12ef5eb | 69 | #endif |
570d7624 | 70 | |
570d7624 | 71 | #include "lisp.h" |
8d4e077b | 72 | #include "intervals.h" |
570d7624 | 73 | #include "buffer.h" |
db327c7e | 74 | #include "character.h" |
6fdaa9a0 | 75 | #include "coding.h" |
570d7624 | 76 | #include "window.h" |
67c08d6c | 77 | #include "blockinput.h" |
385ed61f KL |
78 | #include "frame.h" |
79 | #include "dispextern.h" | |
570d7624 | 80 | |
5e570b75 RS |
81 | #ifdef WINDOWSNT |
82 | #define NOMINMAX 1 | |
83 | #include <windows.h> | |
84 | #include <stdlib.h> | |
85 | #include <fcntl.h> | |
86 | #endif /* not WINDOWSNT */ | |
87 | ||
7990d02a EZ |
88 | #ifdef MSDOS |
89 | #include "msdos.h" | |
90 | #include <sys/param.h> | |
91 | #if __DJGPP__ >= 2 | |
92 | #include <fcntl.h> | |
93 | #include <string.h> | |
94 | #endif | |
95 | #endif | |
96 | ||
199607e4 RS |
97 | #ifdef DOS_NT |
98 | #define CORRECT_DIR_SEPS(s) \ | |
99 | do { if ('/' == DIRECTORY_SEP) dostounix_filename (s); \ | |
100 | else unixtodos_filename (s); \ | |
101 | } while (0) | |
102 | /* On Windows, drive letters must be alphabetic - on DOS, the Netware | |
103 | redirector allows the six letters between 'Z' and 'a' as well. */ | |
104 | #ifdef MSDOS | |
105 | #define IS_DRIVE(x) ((x) >= 'A' && (x) <= 'z') | |
106 | #endif | |
107 | #ifdef WINDOWSNT | |
108 | #define IS_DRIVE(x) isalpha (x) | |
109 | #endif | |
f54b565c MB |
110 | /* Need to lower-case the drive letter, or else expanded |
111 | filenames will sometimes compare inequal, because | |
112 | `expand-file-name' doesn't always down-case the drive letter. */ | |
113 | #define DRIVE_LETTER(x) (tolower (x)) | |
199607e4 RS |
114 | #endif |
115 | ||
570d7624 | 116 | #ifdef VMS |
570d7624 JB |
117 | #include <file.h> |
118 | #include <rmsdef.h> | |
119 | #include <fab.h> | |
120 | #include <nam.h> | |
121 | #endif | |
122 | ||
de5bf5d3 | 123 | #include "systime.h" |
570d7624 JB |
124 | |
125 | #ifdef HPUX | |
126 | #include <netio.h> | |
9b7828a5 | 127 | #ifndef HPUX8 |
47e7b9e5 | 128 | #ifndef HPUX9 |
570d7624 JB |
129 | #include <errnet.h> |
130 | #endif | |
9b7828a5 | 131 | #endif |
47e7b9e5 | 132 | #endif |
570d7624 | 133 | |
9c856db9 GM |
134 | #include "commands.h" |
135 | extern int use_dialog_box; | |
6b61353c | 136 | extern int use_file_dialog; |
9c856db9 | 137 | |
570d7624 JB |
138 | #ifndef O_WRONLY |
139 | #define O_WRONLY 1 | |
140 | #endif | |
141 | ||
4018b5ef RS |
142 | #ifndef O_RDONLY |
143 | #define O_RDONLY 0 | |
144 | #endif | |
145 | ||
8f6df9b5 EZ |
146 | #ifndef S_ISLNK |
147 | # define lstat stat | |
148 | #endif | |
149 | ||
c1558952 TTN |
150 | #ifndef FILE_SYSTEM_CASE |
151 | #define FILE_SYSTEM_CASE(filename) (filename) | |
152 | #endif | |
153 | ||
570d7624 JB |
154 | /* Nonzero during writing of auto-save files */ |
155 | int auto_saving; | |
156 | ||
157 | /* Set by auto_save_1 to mode of original file so Fwrite_region will create | |
158 | a new file with the same mode as the original */ | |
159 | int auto_save_mode_bits; | |
160 | ||
ca730bf0 CY |
161 | /* Set by auto_save_1 if an error occurred during the last auto-save. */ |
162 | int auto_save_error_occurred; | |
163 | ||
356a6224 KH |
164 | /* The symbol bound to coding-system-for-read when |
165 | insert-file-contents is called for recovering a file. This is not | |
166 | an actual coding system name, but just an indicator to tell | |
167 | insert-file-contents to use `emacs-mule' with a special flag for | |
168 | auto saving and recovering a file. */ | |
169 | Lisp_Object Qauto_save_coding; | |
170 | ||
b1d1b865 RS |
171 | /* Coding system for file names, or nil if none. */ |
172 | Lisp_Object Vfile_name_coding_system; | |
173 | ||
cd913586 KH |
174 | /* Coding system for file names used only when |
175 | Vfile_name_coding_system is nil. */ | |
176 | Lisp_Object Vdefault_file_name_coding_system; | |
177 | ||
199607e4 | 178 | /* Alist of elements (REGEXP . HANDLER) for file names |
32f4334d RS |
179 | whose I/O is done with a special handler. */ |
180 | Lisp_Object Vfile_name_handler_alist; | |
181 | ||
f6c9b683 RS |
182 | /* Property name of a file name handler, |
183 | which gives a list of operations it handles.. */ | |
184 | Lisp_Object Qoperations; | |
185 | ||
0d420e88 BG |
186 | /* Lisp functions for translating file formats */ |
187 | Lisp_Object Qformat_decode, Qformat_annotate_function; | |
188 | ||
c9e82392 | 189 | /* Function to be called to decide a coding system of a reading file. */ |
0414b394 | 190 | Lisp_Object Vset_auto_coding_function; |
c9e82392 | 191 | |
d6a3cc15 RS |
192 | /* Functions to be called to process text properties in inserted file. */ |
193 | Lisp_Object Vafter_insert_file_functions; | |
194 | ||
2080470e | 195 | /* Lisp function for setting buffer-file-coding-system and the |
b6426b03 | 196 | multibyteness of the current buffer after inserting a file. */ |
2080470e | 197 | Lisp_Object Qafter_insert_file_set_coding; |
b6426b03 | 198 | |
d6a3cc15 RS |
199 | /* Functions to be called to create text property annotations for file. */ |
200 | Lisp_Object Vwrite_region_annotate_functions; | |
bd235610 | 201 | Lisp_Object Qwrite_region_annotate_functions; |
d6a3cc15 | 202 | |
6fc6f94b RS |
203 | /* During build_annotations, each time an annotation function is called, |
204 | this holds the annotations made by the previous functions. */ | |
205 | Lisp_Object Vwrite_region_annotations_so_far; | |
206 | ||
e54d3b5d RS |
207 | /* File name in which we write a list of all our auto save files. */ |
208 | Lisp_Object Vauto_save_list_file_name; | |
209 | ||
59ffe07d | 210 | /* Function to call to read a file name. */ |
efdc16c9 | 211 | Lisp_Object Vread_file_name_function; |
59ffe07d KS |
212 | |
213 | /* Current predicate used by read_file_name_internal. */ | |
214 | Lisp_Object Vread_file_name_predicate; | |
215 | ||
316ef0dc JPW |
216 | /* Nonzero means completion ignores case when reading file name. */ |
217 | int read_file_name_completion_ignore_case; | |
218 | ||
570d7624 JB |
219 | /* Nonzero means, when reading a filename in the minibuffer, |
220 | start out by inserting the default directory into the minibuffer. */ | |
221 | int insert_default_directory; | |
222 | ||
223 | /* On VMS, nonzero means write new files with record format stmlf. | |
224 | Zero means use var format. */ | |
225 | int vms_stmlf_recfm; | |
226 | ||
199607e4 RS |
227 | /* On NT, specifies the directory separator character, used (eg.) when |
228 | expanding file names. This can be bound to / or \. */ | |
229 | Lisp_Object Vdirectory_sep_char; | |
230 | ||
ccf61795 RF |
231 | #ifdef HAVE_FSYNC |
232 | /* Nonzero means skip the call to fsync in Fwrite-region. */ | |
233 | int write_region_inhibit_fsync; | |
234 | #endif | |
235 | ||
84f6296a RS |
236 | extern Lisp_Object Vuser_login_name; |
237 | ||
c1c4693e RS |
238 | #ifdef WINDOWSNT |
239 | extern Lisp_Object Vw32_get_true_file_attributes; | |
240 | #endif | |
241 | ||
84f6296a RS |
242 | extern int minibuf_level; |
243 | ||
a8c828be RS |
244 | extern int minibuffer_auto_raise; |
245 | ||
75fa7206 RS |
246 | extern int history_delete_duplicates; |
247 | ||
a65970a0 RS |
248 | /* These variables describe handlers that have "already" had a chance |
249 | to handle the current operation. | |
250 | ||
251 | Vinhibit_file_name_handlers is a list of file name handlers. | |
252 | Vinhibit_file_name_operation is the operation being handled. | |
253 | If we try to handle that operation, we ignore those handlers. */ | |
254 | ||
82c2d839 | 255 | static Lisp_Object Vinhibit_file_name_handlers; |
a65970a0 | 256 | static Lisp_Object Vinhibit_file_name_operation; |
82c2d839 | 257 | |
c0b7b21c | 258 | Lisp_Object Qfile_error, Qfile_already_exists, Qfile_date_error; |
505ab9bc | 259 | Lisp_Object Qexcl; |
15c65264 RS |
260 | Lisp_Object Qfile_name_history; |
261 | ||
d6a3cc15 RS |
262 | Lisp_Object Qcar_less_than_car; |
263 | ||
ce51c54c | 264 | static int a_write P_ ((int, Lisp_Object, int, int, |
b9013200 | 265 | Lisp_Object *, struct coding_system *)); |
ce51c54c KH |
266 | static int e_write P_ ((int, Lisp_Object, int, int, struct coding_system *)); |
267 | ||
ec7adf26 | 268 | \f |
5d01d666 | 269 | void |
570d7624 | 270 | report_file_error (string, data) |
19290c65 | 271 | const char *string; |
570d7624 JB |
272 | Lisp_Object data; |
273 | { | |
274 | Lisp_Object errstring; | |
505ab9bc | 275 | int errorno = errno; |
d7259fdb | 276 | char *str; |
570d7624 | 277 | |
ca9c0567 | 278 | synchronize_system_messages_locale (); |
d7259fdb KH |
279 | str = strerror (errorno); |
280 | errstring = code_convert_string_norecord (make_unibyte_string (str, | |
281 | strlen (str)), | |
68c45bf0 PE |
282 | Vlocale_coding_system, 0); |
283 | ||
570d7624 | 284 | while (1) |
505ab9bc RS |
285 | switch (errorno) |
286 | { | |
287 | case EEXIST: | |
24b1ddad | 288 | xsignal (Qfile_already_exists, Fcons (errstring, data)); |
505ab9bc RS |
289 | break; |
290 | default: | |
291 | /* System error messages are capitalized. Downcase the initial | |
292 | unless it is followed by a slash. */ | |
d5db4077 | 293 | if (SREF (errstring, 1) != '/') |
942dc838 | 294 | SSET (errstring, 0, DOWNCASE (SREF (errstring, 0))); |
505ab9bc | 295 | |
24b1ddad | 296 | xsignal (Qfile_error, |
505ab9bc RS |
297 | Fcons (build_string (string), Fcons (errstring, data))); |
298 | } | |
570d7624 | 299 | } |
b5148e85 | 300 | |
b27a1703 | 301 | Lisp_Object |
b5148e85 RS |
302 | close_file_unwind (fd) |
303 | Lisp_Object fd; | |
304 | { | |
68c45bf0 | 305 | emacs_close (XFASTINT (fd)); |
b27a1703 | 306 | return Qnil; |
b5148e85 | 307 | } |
a1d2b64a RS |
308 | |
309 | /* Restore point, having saved it as a marker. */ | |
310 | ||
ec7adf26 | 311 | static Lisp_Object |
a1d2b64a | 312 | restore_point_unwind (location) |
199607e4 | 313 | Lisp_Object location; |
a1d2b64a | 314 | { |
ec7adf26 | 315 | Fgoto_char (location); |
a1d2b64a | 316 | Fset_marker (location, Qnil, Qnil); |
b27a1703 | 317 | return Qnil; |
a1d2b64a | 318 | } |
59c94f03 | 319 | |
570d7624 | 320 | \f |
0bf2eed2 | 321 | Lisp_Object Qexpand_file_name; |
273e0829 | 322 | Lisp_Object Qsubstitute_in_file_name; |
0bf2eed2 RS |
323 | Lisp_Object Qdirectory_file_name; |
324 | Lisp_Object Qfile_name_directory; | |
325 | Lisp_Object Qfile_name_nondirectory; | |
642ef245 | 326 | Lisp_Object Qunhandled_file_name_directory; |
0bf2eed2 | 327 | Lisp_Object Qfile_name_as_directory; |
32f4334d | 328 | Lisp_Object Qcopy_file; |
a6e6e718 | 329 | Lisp_Object Qmake_directory_internal; |
b272d624 | 330 | Lisp_Object Qmake_directory; |
32f4334d RS |
331 | Lisp_Object Qdelete_directory; |
332 | Lisp_Object Qdelete_file; | |
333 | Lisp_Object Qrename_file; | |
334 | Lisp_Object Qadd_name_to_file; | |
335 | Lisp_Object Qmake_symbolic_link; | |
336 | Lisp_Object Qfile_exists_p; | |
337 | Lisp_Object Qfile_executable_p; | |
338 | Lisp_Object Qfile_readable_p; | |
32f4334d | 339 | Lisp_Object Qfile_writable_p; |
1f8653eb RS |
340 | Lisp_Object Qfile_symlink_p; |
341 | Lisp_Object Qaccess_file; | |
32f4334d | 342 | Lisp_Object Qfile_directory_p; |
adedc71d | 343 | Lisp_Object Qfile_regular_p; |
32f4334d RS |
344 | Lisp_Object Qfile_accessible_directory_p; |
345 | Lisp_Object Qfile_modes; | |
346 | Lisp_Object Qset_file_modes; | |
819da85b | 347 | Lisp_Object Qset_file_times; |
32f4334d RS |
348 | Lisp_Object Qfile_newer_than_file_p; |
349 | Lisp_Object Qinsert_file_contents; | |
350 | Lisp_Object Qwrite_region; | |
351 | Lisp_Object Qverify_visited_file_modtime; | |
3ec46acd | 352 | Lisp_Object Qset_visited_file_modtime; |
32f4334d | 353 | |
49307295 | 354 | DEFUN ("find-file-name-handler", Ffind_file_name_handler, Sfind_file_name_handler, 2, 2, 0, |
8c1a1077 PJ |
355 | doc: /* Return FILENAME's handler function for OPERATION, if it has one. |
356 | Otherwise, return nil. | |
357 | A file name is handled if one of the regular expressions in | |
358 | `file-name-handler-alist' matches it. | |
359 | ||
360 | If OPERATION equals `inhibit-file-name-operation', then we ignore | |
361 | any handlers that are members of `inhibit-file-name-handlers', | |
362 | but we still do run any other handlers. This lets handlers | |
363 | use the standard functions without calling themselves recursively. */) | |
364 | (filename, operation) | |
365 | Lisp_Object filename, operation; | |
32f4334d | 366 | { |
642ef245 | 367 | /* This function must not munge the match data. */ |
204ee271 | 368 | Lisp_Object chain, inhibited_handlers, result; |
8d2ced53 | 369 | int pos = -1; |
642ef245 | 370 | |
204ee271 | 371 | result = Qnil; |
b7826503 | 372 | CHECK_STRING (filename); |
e4432095 | 373 | |
a65970a0 RS |
374 | if (EQ (operation, Vinhibit_file_name_operation)) |
375 | inhibited_handlers = Vinhibit_file_name_handlers; | |
376 | else | |
377 | inhibited_handlers = Qnil; | |
82c2d839 | 378 | |
93c30b5f | 379 | for (chain = Vfile_name_handler_alist; CONSP (chain); |
03699b14 | 380 | chain = XCDR (chain)) |
32f4334d RS |
381 | { |
382 | Lisp_Object elt; | |
03699b14 | 383 | elt = XCAR (chain); |
93c30b5f | 384 | if (CONSP (elt)) |
32f4334d | 385 | { |
f6c9b683 | 386 | Lisp_Object string = XCAR (elt); |
8d2ced53 | 387 | int match_pos; |
f6c9b683 | 388 | Lisp_Object handler = XCDR (elt); |
68780e2a RS |
389 | Lisp_Object operations = Qnil; |
390 | ||
391 | if (SYMBOLP (handler)) | |
392 | operations = Fget (handler, Qoperations); | |
f6c9b683 | 393 | |
8d2ced53 | 394 | if (STRINGP (string) |
f6c9b683 RS |
395 | && (match_pos = fast_string_match (string, filename)) > pos |
396 | && (NILP (operations) || ! NILP (Fmemq (operation, operations)))) | |
a65970a0 | 397 | { |
f6c9b683 | 398 | Lisp_Object tem; |
a65970a0 | 399 | |
03699b14 | 400 | handler = XCDR (elt); |
a65970a0 RS |
401 | tem = Fmemq (handler, inhibited_handlers); |
402 | if (NILP (tem)) | |
8d2ced53 SM |
403 | { |
404 | result = handler; | |
405 | pos = match_pos; | |
406 | } | |
a65970a0 | 407 | } |
32f4334d | 408 | } |
642ef245 JB |
409 | |
410 | QUIT; | |
32f4334d | 411 | } |
8d2ced53 | 412 | return result; |
32f4334d RS |
413 | } |
414 | \f | |
570d7624 | 415 | DEFUN ("file-name-directory", Ffile_name_directory, Sfile_name_directory, |
8c1a1077 PJ |
416 | 1, 1, 0, |
417 | doc: /* Return the directory component in file name FILENAME. | |
418 | Return nil if FILENAME does not include a directory. | |
78379264 | 419 | Otherwise return a directory name. |
8c1a1077 PJ |
420 | Given a Unix syntax file name, returns a string ending in slash; |
421 | on VMS, perhaps instead a string ending in `:', `]' or `>'. */) | |
422 | (filename) | |
3b7f6e60 | 423 | Lisp_Object filename; |
570d7624 | 424 | { |
100c44b7 | 425 | #ifndef DOS_NT |
19290c65 | 426 | register const unsigned char *beg; |
100c44b7 EZ |
427 | #else |
428 | register unsigned char *beg; | |
429 | #endif | |
19290c65 | 430 | register const unsigned char *p; |
0bf2eed2 | 431 | Lisp_Object handler; |
570d7624 | 432 | |
b7826503 | 433 | CHECK_STRING (filename); |
570d7624 | 434 | |
0bf2eed2 RS |
435 | /* If the file name has special constructs in it, |
436 | call the corresponding file handler. */ | |
3b7f6e60 | 437 | handler = Ffind_file_name_handler (filename, Qfile_name_directory); |
0bf2eed2 | 438 | if (!NILP (handler)) |
3b7f6e60 | 439 | return call2 (handler, Qfile_name_directory, filename); |
0bf2eed2 | 440 | |
3b7f6e60 | 441 | filename = FILE_SYSTEM_CASE (filename); |
d5db4077 | 442 | beg = SDATA (filename); |
199607e4 RS |
443 | #ifdef DOS_NT |
444 | beg = strcpy (alloca (strlen (beg) + 1), beg); | |
445 | #endif | |
d5db4077 | 446 | p = beg + SBYTES (filename); |
570d7624 | 447 | |
199607e4 | 448 | while (p != beg && !IS_DIRECTORY_SEP (p[-1]) |
570d7624 JB |
449 | #ifdef VMS |
450 | && p[-1] != ':' && p[-1] != ']' && p[-1] != '>' | |
451 | #endif /* VMS */ | |
199607e4 | 452 | #ifdef DOS_NT |
ba14e174 RS |
453 | /* only recognise drive specifier at the beginning */ |
454 | && !(p[-1] == ':' | |
455 | /* handle the "/:d:foo" and "/:foo" cases correctly */ | |
456 | && ((p == beg + 2 && !IS_DIRECTORY_SEP (*beg)) | |
457 | || (p == beg + 4 && IS_DIRECTORY_SEP (*beg)))) | |
199607e4 | 458 | #endif |
570d7624 JB |
459 | ) p--; |
460 | ||
461 | if (p == beg) | |
462 | return Qnil; | |
5e570b75 | 463 | #ifdef DOS_NT |
4c3c22f3 | 464 | /* Expansion of "c:" to drive and default directory. */ |
ba14e174 | 465 | if (p[-1] == ':') |
4c3c22f3 | 466 | { |
4c3c22f3 | 467 | /* MAXPATHLEN+1 is guaranteed to be enough space for getdefdir. */ |
199607e4 | 468 | unsigned char *res = alloca (MAXPATHLEN + 1); |
ba14e174 RS |
469 | unsigned char *r = res; |
470 | ||
471 | if (p == beg + 4 && IS_DIRECTORY_SEP (*beg) && beg[1] == ':') | |
472 | { | |
473 | strncpy (res, beg, 2); | |
474 | beg += 2; | |
475 | r += 2; | |
476 | } | |
477 | ||
478 | if (getdefdir (toupper (*beg) - 'A' + 1, r)) | |
4c3c22f3 | 479 | { |
199607e4 | 480 | if (!IS_DIRECTORY_SEP (res[strlen (res) - 1])) |
4c3c22f3 RS |
481 | strcat (res, "/"); |
482 | beg = res; | |
483 | p = beg + strlen (beg); | |
484 | } | |
485 | } | |
199607e4 | 486 | CORRECT_DIR_SEPS (beg); |
5e570b75 | 487 | #endif /* DOS_NT */ |
60d67b83 | 488 | |
d7231f93 | 489 | return make_specified_string (beg, -1, p - beg, STRING_MULTIBYTE (filename)); |
570d7624 JB |
490 | } |
491 | ||
60d67b83 RS |
492 | DEFUN ("file-name-nondirectory", Ffile_name_nondirectory, |
493 | Sfile_name_nondirectory, 1, 1, 0, | |
8c1a1077 PJ |
494 | doc: /* Return file name FILENAME sans its directory. |
495 | For example, in a Unix-syntax file name, | |
496 | this is everything after the last slash, | |
497 | or the entire name if it contains no slash. */) | |
498 | (filename) | |
3b7f6e60 | 499 | Lisp_Object filename; |
570d7624 | 500 | { |
19290c65 | 501 | register const unsigned char *beg, *p, *end; |
0bf2eed2 | 502 | Lisp_Object handler; |
570d7624 | 503 | |
b7826503 | 504 | CHECK_STRING (filename); |
570d7624 | 505 | |
0bf2eed2 RS |
506 | /* If the file name has special constructs in it, |
507 | call the corresponding file handler. */ | |
3b7f6e60 | 508 | handler = Ffind_file_name_handler (filename, Qfile_name_nondirectory); |
0bf2eed2 | 509 | if (!NILP (handler)) |
3b7f6e60 | 510 | return call2 (handler, Qfile_name_nondirectory, filename); |
0bf2eed2 | 511 | |
d5db4077 KR |
512 | beg = SDATA (filename); |
513 | end = p = beg + SBYTES (filename); | |
570d7624 | 514 | |
199607e4 | 515 | while (p != beg && !IS_DIRECTORY_SEP (p[-1]) |
570d7624 JB |
516 | #ifdef VMS |
517 | && p[-1] != ':' && p[-1] != ']' && p[-1] != '>' | |
518 | #endif /* VMS */ | |
199607e4 RS |
519 | #ifdef DOS_NT |
520 | /* only recognise drive specifier at beginning */ | |
ba14e174 RS |
521 | && !(p[-1] == ':' |
522 | /* handle the "/:d:foo" case correctly */ | |
523 | && (p == beg + 2 || (p == beg + 4 && IS_DIRECTORY_SEP (*beg)))) | |
199607e4 | 524 | #endif |
60d67b83 RS |
525 | ) |
526 | p--; | |
570d7624 | 527 | |
d7231f93 | 528 | return make_specified_string (p, -1, end - p, STRING_MULTIBYTE (filename)); |
570d7624 | 529 | } |
642ef245 | 530 | |
60d67b83 RS |
531 | DEFUN ("unhandled-file-name-directory", Funhandled_file_name_directory, |
532 | Sunhandled_file_name_directory, 1, 1, 0, | |
8c1a1077 PJ |
533 | doc: /* Return a directly usable directory name somehow associated with FILENAME. |
534 | A `directly usable' directory name is one that may be used without the | |
535 | intervention of any file handler. | |
536 | If FILENAME is a directly usable file itself, return | |
537 | \(file-name-directory FILENAME). | |
ca319910 SM |
538 | If FILENAME refers to a file which is not accessible from a local process, |
539 | then this should return nil. | |
8c1a1077 PJ |
540 | The `call-process' and `start-process' functions use this function to |
541 | get a current directory to run processes in. */) | |
542 | (filename) | |
543 | Lisp_Object filename; | |
642ef245 JB |
544 | { |
545 | Lisp_Object handler; | |
546 | ||
547 | /* If the file name has special constructs in it, | |
548 | call the corresponding file handler. */ | |
49307295 | 549 | handler = Ffind_file_name_handler (filename, Qunhandled_file_name_directory); |
642ef245 JB |
550 | if (!NILP (handler)) |
551 | return call2 (handler, Qunhandled_file_name_directory, filename); | |
552 | ||
553 | return Ffile_name_directory (filename); | |
554 | } | |
555 | ||
570d7624 JB |
556 | \f |
557 | char * | |
558 | file_name_as_directory (out, in) | |
559 | char *out, *in; | |
560 | { | |
561 | int size = strlen (in) - 1; | |
562 | ||
563 | strcpy (out, in); | |
564 | ||
8aa3a244 RS |
565 | if (size < 0) |
566 | { | |
154a307d KH |
567 | out[0] = '.'; |
568 | out[1] = '/'; | |
569 | out[2] = 0; | |
8aa3a244 RS |
570 | return out; |
571 | } | |
572 | ||
570d7624 JB |
573 | #ifdef VMS |
574 | /* Is it already a directory string? */ | |
575 | if (in[size] == ':' || in[size] == ']' || in[size] == '>') | |
576 | return out; | |
577 | /* Is it a VMS directory file name? If so, hack VMS syntax. */ | |
578 | else if (! index (in, '/') | |
579 | && ((size > 3 && ! strcmp (&in[size - 3], ".DIR")) | |
580 | || (size > 3 && ! strcmp (&in[size - 3], ".dir")) | |
581 | || (size > 5 && (! strncmp (&in[size - 5], ".DIR", 4) | |
582 | || ! strncmp (&in[size - 5], ".dir", 4)) | |
583 | && (in[size - 1] == '.' || in[size - 1] == ';') | |
584 | && in[size] == '1'))) | |
585 | { | |
586 | register char *p, *dot; | |
587 | char brack; | |
588 | ||
589 | /* x.dir -> [.x] | |
590 | dir:x.dir --> dir:[x] | |
591 | dir:[x]y.dir --> dir:[x.y] */ | |
592 | p = in + size; | |
593 | while (p != in && *p != ':' && *p != '>' && *p != ']') p--; | |
594 | if (p != in) | |
595 | { | |
596 | strncpy (out, in, p - in); | |
597 | out[p - in] = '\0'; | |
598 | if (*p == ':') | |
599 | { | |
600 | brack = ']'; | |
601 | strcat (out, ":["); | |
602 | } | |
603 | else | |
604 | { | |
605 | brack = *p; | |
606 | strcat (out, "."); | |
607 | } | |
608 | p++; | |
609 | } | |
610 | else | |
611 | { | |
612 | brack = ']'; | |
613 | strcpy (out, "[."); | |
614 | } | |
bfb61299 JB |
615 | dot = index (p, '.'); |
616 | if (dot) | |
570d7624 JB |
617 | { |
618 | /* blindly remove any extension */ | |
619 | size = strlen (out) + (dot - p); | |
620 | strncat (out, p, dot - p); | |
621 | } | |
622 | else | |
623 | { | |
624 | strcat (out, p); | |
625 | size = strlen (out); | |
626 | } | |
627 | out[size++] = brack; | |
628 | out[size] = '\0'; | |
629 | } | |
630 | #else /* not VMS */ | |
631 | /* For Unix syntax, Append a slash if necessary */ | |
199607e4 | 632 | if (!IS_DIRECTORY_SEP (out[size])) |
5e570b75 | 633 | { |
8cfd6446 JB |
634 | /* Cannot use DIRECTORY_SEP, which could have any value */ |
635 | out[size + 1] = '/'; | |
5e570b75 RS |
636 | out[size + 2] = '\0'; |
637 | } | |
199607e4 RS |
638 | #ifdef DOS_NT |
639 | CORRECT_DIR_SEPS (out); | |
640 | #endif | |
570d7624 JB |
641 | #endif /* not VMS */ |
642 | return out; | |
643 | } | |
644 | ||
645 | DEFUN ("file-name-as-directory", Ffile_name_as_directory, | |
646 | Sfile_name_as_directory, 1, 1, 0, | |
0dac4f85 | 647 | doc: /* Return a string representing the file name FILE interpreted as a directory. |
8c1a1077 PJ |
648 | This operation exists because a directory is also a file, but its name as |
649 | a directory is different from its name as a file. | |
650 | The result can be used as the value of `default-directory' | |
651 | or passed as second argument to `expand-file-name'. | |
652 | For a Unix-syntax file name, just appends a slash. | |
653 | On VMS, converts \"[X]FOO.DIR\" to \"[X.FOO]\", etc. */) | |
654 | (file) | |
570d7624 JB |
655 | Lisp_Object file; |
656 | { | |
657 | char *buf; | |
0bf2eed2 | 658 | Lisp_Object handler; |
570d7624 | 659 | |
b7826503 | 660 | CHECK_STRING (file); |
265a9e55 | 661 | if (NILP (file)) |
570d7624 | 662 | return Qnil; |
0bf2eed2 RS |
663 | |
664 | /* If the file name has special constructs in it, | |
665 | call the corresponding file handler. */ | |
49307295 | 666 | handler = Ffind_file_name_handler (file, Qfile_name_as_directory); |
0bf2eed2 RS |
667 | if (!NILP (handler)) |
668 | return call2 (handler, Qfile_name_as_directory, file); | |
669 | ||
d5db4077 | 670 | buf = (char *) alloca (SBYTES (file) + 10); |
d7231f93 KH |
671 | file_name_as_directory (buf, SDATA (file)); |
672 | return make_specified_string (buf, -1, strlen (buf), | |
673 | STRING_MULTIBYTE (file)); | |
570d7624 JB |
674 | } |
675 | \f | |
676 | /* | |
677 | * Convert from directory name to filename. | |
678 | * On VMS: | |
679 | * xyzzy:[mukesh.emacs] => xyzzy:[mukesh]emacs.dir.1 | |
680 | * xyzzy:[mukesh] => xyzzy:[000000]mukesh.dir.1 | |
199607e4 | 681 | * On UNIX, it's simple: just make sure there isn't a terminating / |
570d7624 JB |
682 | |
683 | * Value is nonzero if the string output is different from the input. | |
684 | */ | |
685 | ||
dfcf069d | 686 | int |
570d7624 JB |
687 | directory_file_name (src, dst) |
688 | char *src, *dst; | |
689 | { | |
690 | long slen; | |
691 | #ifdef VMS | |
692 | long rlen; | |
693 | char * ptr, * rptr; | |
694 | char bracket; | |
695 | struct FAB fab = cc$rms_fab; | |
696 | struct NAM nam = cc$rms_nam; | |
697 | char esa[NAM$C_MAXRSS]; | |
698 | #endif /* VMS */ | |
699 | ||
700 | slen = strlen (src); | |
701 | #ifdef VMS | |
702 | if (! index (src, '/') | |
703 | && (src[slen - 1] == ']' | |
704 | || src[slen - 1] == ':' | |
705 | || src[slen - 1] == '>')) | |
706 | { | |
707 | /* VMS style - convert [x.y.z] to [x.y]z, [x] to [000000]x */ | |
708 | fab.fab$l_fna = src; | |
709 | fab.fab$b_fns = slen; | |
710 | fab.fab$l_nam = &nam; | |
711 | fab.fab$l_fop = FAB$M_NAM; | |
712 | ||
713 | nam.nam$l_esa = esa; | |
714 | nam.nam$b_ess = sizeof esa; | |
715 | nam.nam$b_nop |= NAM$M_SYNCHK; | |
716 | ||
717 | /* We call SYS$PARSE to handle such things as [--] for us. */ | |
199607e4 | 718 | if (SYS$PARSE (&fab, 0, 0) == RMS$_NORMAL) |
570d7624 JB |
719 | { |
720 | slen = nam.nam$b_esl; | |
721 | if (esa[slen - 1] == ';' && esa[slen - 2] == '.') | |
722 | slen -= 2; | |
723 | esa[slen] = '\0'; | |
724 | src = esa; | |
725 | } | |
726 | if (src[slen - 1] != ']' && src[slen - 1] != '>') | |
727 | { | |
728 | /* what about when we have logical_name:???? */ | |
729 | if (src[slen - 1] == ':') | |
5e570b75 | 730 | { /* Xlate logical name and see what we get */ |
570d7624 JB |
731 | ptr = strcpy (dst, src); /* upper case for getenv */ |
732 | while (*ptr) | |
733 | { | |
734 | if ('a' <= *ptr && *ptr <= 'z') | |
735 | *ptr -= 040; | |
736 | ptr++; | |
737 | } | |
5e570b75 | 738 | dst[slen - 1] = 0; /* remove colon */ |
570d7624 JB |
739 | if (!(src = egetenv (dst))) |
740 | return 0; | |
741 | /* should we jump to the beginning of this procedure? | |
742 | Good points: allows us to use logical names that xlate | |
743 | to Unix names, | |
744 | Bad points: can be a problem if we just translated to a device | |
745 | name... | |
746 | For now, I'll punt and always expect VMS names, and hope for | |
747 | the best! */ | |
748 | slen = strlen (src); | |
749 | if (src[slen - 1] != ']' && src[slen - 1] != '>') | |
750 | { /* no recursion here! */ | |
751 | strcpy (dst, src); | |
752 | return 0; | |
753 | } | |
754 | } | |
755 | else | |
5e570b75 | 756 | { /* not a directory spec */ |
570d7624 JB |
757 | strcpy (dst, src); |
758 | return 0; | |
759 | } | |
760 | } | |
761 | bracket = src[slen - 1]; | |
762 | ||
763 | /* If bracket is ']' or '>', bracket - 2 is the corresponding | |
764 | opening bracket. */ | |
bfb61299 JB |
765 | ptr = index (src, bracket - 2); |
766 | if (ptr == 0) | |
570d7624 JB |
767 | { /* no opening bracket */ |
768 | strcpy (dst, src); | |
769 | return 0; | |
770 | } | |
771 | if (!(rptr = rindex (src, '.'))) | |
772 | rptr = ptr; | |
773 | slen = rptr - src; | |
774 | strncpy (dst, src, slen); | |
775 | dst[slen] = '\0'; | |
776 | if (*rptr == '.') | |
777 | { | |
778 | dst[slen++] = bracket; | |
779 | dst[slen] = '\0'; | |
780 | } | |
781 | else | |
782 | { | |
783 | /* If we have the top-level of a rooted directory (i.e. xx:[000000]), | |
784 | then translate the device and recurse. */ | |
785 | if (dst[slen - 1] == ':' | |
5e570b75 | 786 | && dst[slen - 2] != ':' /* skip decnet nodes */ |
199607e4 | 787 | && strcmp (src + slen, "[000000]") == 0) |
570d7624 JB |
788 | { |
789 | dst[slen - 1] = '\0'; | |
790 | if ((ptr = egetenv (dst)) | |
791 | && (rlen = strlen (ptr) - 1) > 0 | |
792 | && (ptr[rlen] == ']' || ptr[rlen] == '>') | |
793 | && ptr[rlen - 1] == '.') | |
794 | { | |
72b21817 RS |
795 | char * buf = (char *) alloca (strlen (ptr) + 1); |
796 | strcpy (buf, ptr); | |
797 | buf[rlen - 1] = ']'; | |
798 | buf[rlen] = '\0'; | |
799 | return directory_file_name (buf, dst); | |
570d7624 JB |
800 | } |
801 | else | |
802 | dst[slen - 1] = ':'; | |
803 | } | |
804 | strcat (dst, "[000000]"); | |
805 | slen += 8; | |
806 | } | |
807 | rptr++; | |
808 | rlen = strlen (rptr) - 1; | |
809 | strncat (dst, rptr, rlen); | |
810 | dst[slen + rlen] = '\0'; | |
811 | strcat (dst, ".DIR.1"); | |
812 | return 1; | |
813 | } | |
814 | #endif /* VMS */ | |
815 | /* Process as Unix format: just remove any final slash. | |
816 | But leave "/" unchanged; do not change it to "". */ | |
817 | strcpy (dst, src); | |
199607e4 | 818 | if (slen > 1 |
5e570b75 | 819 | && IS_DIRECTORY_SEP (dst[slen - 1]) |
4592782e RS |
820 | #ifdef DOS_NT |
821 | && !IS_ANY_SEP (dst[slen - 2]) | |
822 | #endif | |
823 | ) | |
570d7624 | 824 | dst[slen - 1] = 0; |
199607e4 RS |
825 | #ifdef DOS_NT |
826 | CORRECT_DIR_SEPS (dst); | |
125feee8 | 827 | #endif |
570d7624 JB |
828 | return 1; |
829 | } | |
830 | ||
831 | DEFUN ("directory-file-name", Fdirectory_file_name, Sdirectory_file_name, | |
8c1a1077 PJ |
832 | 1, 1, 0, |
833 | doc: /* Returns the file name of the directory named DIRECTORY. | |
834 | This is the name of the file that holds the data for the directory DIRECTORY. | |
835 | This operation exists because a directory is also a file, but its name as | |
836 | a directory is different from its name as a file. | |
837 | In Unix-syntax, this function just removes the final slash. | |
838 | On VMS, given a VMS-syntax directory name such as \"[X.Y]\", | |
839 | it returns a file name such as \"[X]Y.DIR.1\". */) | |
840 | (directory) | |
570d7624 JB |
841 | Lisp_Object directory; |
842 | { | |
843 | char *buf; | |
0bf2eed2 | 844 | Lisp_Object handler; |
570d7624 | 845 | |
b7826503 | 846 | CHECK_STRING (directory); |
570d7624 | 847 | |
265a9e55 | 848 | if (NILP (directory)) |
570d7624 | 849 | return Qnil; |
0bf2eed2 RS |
850 | |
851 | /* If the file name has special constructs in it, | |
852 | call the corresponding file handler. */ | |
49307295 | 853 | handler = Ffind_file_name_handler (directory, Qdirectory_file_name); |
0bf2eed2 RS |
854 | if (!NILP (handler)) |
855 | return call2 (handler, Qdirectory_file_name, directory); | |
856 | ||
570d7624 JB |
857 | #ifdef VMS |
858 | /* 20 extra chars is insufficient for VMS, since we might perform a | |
859 | logical name translation. an equivalence string can be up to 255 | |
860 | chars long, so grab that much extra space... - sss */ | |
d5db4077 | 861 | buf = (char *) alloca (SBYTES (directory) + 20 + 255); |
570d7624 | 862 | #else |
d5db4077 | 863 | buf = (char *) alloca (SBYTES (directory) + 20); |
570d7624 | 864 | #endif |
d5db4077 | 865 | directory_file_name (SDATA (directory), buf); |
d7231f93 KH |
866 | return make_specified_string (buf, -1, strlen (buf), |
867 | STRING_MULTIBYTE (directory)); | |
570d7624 JB |
868 | } |
869 | ||
3ce839e4 RS |
870 | static char make_temp_name_tbl[64] = |
871 | { | |
872 | 'A','B','C','D','E','F','G','H', | |
873 | 'I','J','K','L','M','N','O','P', | |
874 | 'Q','R','S','T','U','V','W','X', | |
875 | 'Y','Z','a','b','c','d','e','f', | |
876 | 'g','h','i','j','k','l','m','n', | |
877 | 'o','p','q','r','s','t','u','v', | |
878 | 'w','x','y','z','0','1','2','3', | |
879 | '4','5','6','7','8','9','-','_' | |
880 | }; | |
cb613bb8 | 881 | |
3ce839e4 RS |
882 | static unsigned make_temp_name_count, make_temp_name_count_initialized_p; |
883 | ||
cb613bb8 | 884 | /* Value is a temporary file name starting with PREFIX, a string. |
efdc16c9 | 885 | |
cb613bb8 GM |
886 | The Emacs process number forms part of the result, so there is |
887 | no danger of generating a name being used by another process. | |
888 | In addition, this function makes an attempt to choose a name | |
889 | which has no existing file. To make this work, PREFIX should be | |
890 | an absolute file name. | |
efdc16c9 | 891 | |
cb613bb8 GM |
892 | BASE64_P non-zero means add the pid as 3 characters in base64 |
893 | encoding. In this case, 6 characters will be added to PREFIX to | |
894 | form the file name. Otherwise, if Emacs is running on a system | |
895 | with long file names, add the pid as a decimal number. | |
896 | ||
897 | This function signals an error if no unique file name could be | |
898 | generated. */ | |
899 | ||
900 | Lisp_Object | |
901 | make_temp_name (prefix, base64_p) | |
570d7624 | 902 | Lisp_Object prefix; |
cb613bb8 | 903 | int base64_p; |
570d7624 JB |
904 | { |
905 | Lisp_Object val; | |
0cedd530 | 906 | int len, clen; |
3ce839e4 RS |
907 | int pid; |
908 | unsigned char *p, *data; | |
909 | char pidbuf[20]; | |
910 | int pidlen; | |
efdc16c9 | 911 | |
b7826503 | 912 | CHECK_STRING (prefix); |
3ce839e4 RS |
913 | |
914 | /* VAL is created by adding 6 characters to PREFIX. The first | |
915 | three are the PID of this process, in base 64, and the second | |
916 | three are incremented if the file already exists. This ensures | |
917 | 262144 unique file names per PID per PREFIX. */ | |
918 | ||
919 | pid = (int) getpid (); | |
920 | ||
cb613bb8 GM |
921 | if (base64_p) |
922 | { | |
923 | pidbuf[0] = make_temp_name_tbl[pid & 63], pid >>= 6; | |
924 | pidbuf[1] = make_temp_name_tbl[pid & 63], pid >>= 6; | |
925 | pidbuf[2] = make_temp_name_tbl[pid & 63], pid >>= 6; | |
926 | pidlen = 3; | |
927 | } | |
928 | else | |
929 | { | |
3ce839e4 | 930 | #ifdef HAVE_LONG_FILE_NAMES |
cb613bb8 GM |
931 | sprintf (pidbuf, "%d", pid); |
932 | pidlen = strlen (pidbuf); | |
3a3bfb18 | 933 | #else |
cb613bb8 GM |
934 | pidbuf[0] = make_temp_name_tbl[pid & 63], pid >>= 6; |
935 | pidbuf[1] = make_temp_name_tbl[pid & 63], pid >>= 6; | |
936 | pidbuf[2] = make_temp_name_tbl[pid & 63], pid >>= 6; | |
937 | pidlen = 3; | |
3ce839e4 | 938 | #endif |
cb613bb8 | 939 | } |
efdc16c9 | 940 | |
0cedd530 SM |
941 | len = SBYTES (prefix); clen = SCHARS (prefix); |
942 | val = make_uninit_multibyte_string (clen + 3 + pidlen, len + 3 + pidlen); | |
943 | if (!STRING_MULTIBYTE (prefix)) | |
944 | STRING_SET_UNIBYTE (val); | |
d5db4077 KR |
945 | data = SDATA (val); |
946 | bcopy(SDATA (prefix), data, len); | |
3ce839e4 RS |
947 | p = data + len; |
948 | ||
949 | bcopy (pidbuf, p, pidlen); | |
950 | p += pidlen; | |
951 | ||
952 | /* Here we try to minimize useless stat'ing when this function is | |
953 | invoked many times successively with the same PREFIX. We achieve | |
954 | this by initializing count to a random value, and incrementing it | |
f6a492a9 RS |
955 | afterwards. |
956 | ||
957 | We don't want make-temp-name to be called while dumping, | |
958 | because then make_temp_name_count_initialized_p would get set | |
959 | and then make_temp_name_count would not be set when Emacs starts. */ | |
960 | ||
3ce839e4 RS |
961 | if (!make_temp_name_count_initialized_p) |
962 | { | |
963 | make_temp_name_count = (unsigned) time (NULL); | |
964 | make_temp_name_count_initialized_p = 1; | |
965 | } | |
966 | ||
967 | while (1) | |
968 | { | |
969 | struct stat ignored; | |
8a7777fc | 970 | unsigned num = make_temp_name_count; |
3ce839e4 RS |
971 | |
972 | p[0] = make_temp_name_tbl[num & 63], num >>= 6; | |
973 | p[1] = make_temp_name_tbl[num & 63], num >>= 6; | |
974 | p[2] = make_temp_name_tbl[num & 63], num >>= 6; | |
975 | ||
8a7777fc RS |
976 | /* Poor man's congruential RN generator. Replace with |
977 | ++make_temp_name_count for debugging. */ | |
978 | make_temp_name_count += 25229; | |
979 | make_temp_name_count %= 225307; | |
980 | ||
3ce839e4 RS |
981 | if (stat (data, &ignored) < 0) |
982 | { | |
983 | /* We want to return only if errno is ENOENT. */ | |
984 | if (errno == ENOENT) | |
985 | return val; | |
986 | else | |
987 | /* The error here is dubious, but there is little else we | |
988 | can do. The alternatives are to return nil, which is | |
989 | as bad as (and in many cases worse than) throwing the | |
990 | error, or to ignore the error, which will likely result | |
8a7777fc RS |
991 | in looping through 225307 stat's, which is not only |
992 | dog-slow, but also useless since it will fallback to | |
993 | the errow below, anyway. */ | |
9869bb0b | 994 | report_file_error ("Cannot create temporary name for prefix", |
3ce839e4 RS |
995 | Fcons (prefix, Qnil)); |
996 | /* not reached */ | |
997 | } | |
998 | } | |
999 | ||
1000 | error ("Cannot create temporary name for prefix `%s'", | |
d5db4077 | 1001 | SDATA (prefix)); |
3ce839e4 | 1002 | return Qnil; |
570d7624 | 1003 | } |
3ce839e4 | 1004 | |
cb613bb8 GM |
1005 | |
1006 | DEFUN ("make-temp-name", Fmake_temp_name, Smake_temp_name, 1, 1, 0, | |
8c1a1077 PJ |
1007 | doc: /* Generate temporary file name (string) starting with PREFIX (a string). |
1008 | The Emacs process number forms part of the result, | |
1009 | so there is no danger of generating a name being used by another process. | |
1010 | ||
1011 | In addition, this function makes an attempt to choose a name | |
1012 | which has no existing file. To make this work, | |
1013 | PREFIX should be an absolute file name. | |
1014 | ||
1015 | There is a race condition between calling `make-temp-name' and creating the | |
1016 | file which opens all kinds of security holes. For that reason, you should | |
f9e6f049 RS |
1017 | probably use `make-temp-file' instead, except in three circumstances: |
1018 | ||
1019 | * If you are creating the file in the user's home directory. | |
1020 | * If you are creating a directory rather than an ordinary file. | |
1021 | * If you are taking special precautions as `make-temp-file' does. */) | |
8c1a1077 | 1022 | (prefix) |
cb613bb8 GM |
1023 | Lisp_Object prefix; |
1024 | { | |
1025 | return make_temp_name (prefix, 0); | |
1026 | } | |
1027 | ||
1028 | ||
570d7624 JB |
1029 | \f |
1030 | DEFUN ("expand-file-name", Fexpand_file_name, Sexpand_file_name, 1, 2, 0, | |
8c1a1077 PJ |
1031 | doc: /* Convert filename NAME to absolute, and canonicalize it. |
1032 | Second arg DEFAULT-DIRECTORY is directory to start with if NAME is relative | |
78379264 | 1033 | \(does not start with slash or tilde); if DEFAULT-DIRECTORY is nil or missing, |
a4e03fe5 | 1034 | the current buffer's value of `default-directory' is used. |
8c1a1077 PJ |
1035 | File name components that are `.' are removed, and |
1036 | so are file name components followed by `..', along with the `..' itself; | |
1037 | note that these simplifications are done without checking the resulting | |
1038 | file names in the file system. | |
1039 | An initial `~/' expands to your home directory. | |
1040 | An initial `~USER/' expands to USER's home directory. | |
1041 | See also the function `substitute-in-file-name'. */) | |
1042 | (name, default_directory) | |
3b7f6e60 | 1043 | Lisp_Object name, default_directory; |
570d7624 JB |
1044 | { |
1045 | unsigned char *nm; | |
199607e4 | 1046 | |
570d7624 JB |
1047 | register unsigned char *newdir, *p, *o; |
1048 | int tlen; | |
1049 | unsigned char *target; | |
1050 | struct passwd *pw; | |
570d7624 JB |
1051 | #ifdef VMS |
1052 | unsigned char * colon = 0; | |
1053 | unsigned char * close = 0; | |
1054 | unsigned char * slash = 0; | |
1055 | unsigned char * brack = 0; | |
1056 | int lbrack = 0, rbrack = 0; | |
1057 | int dots = 0; | |
1058 | #endif /* VMS */ | |
5e570b75 | 1059 | #ifdef DOS_NT |
199607e4 | 1060 | int drive = 0; |
9a1dc3be | 1061 | int collapse_newdir = 1; |
f0f95d31 | 1062 | int is_escaped = 0; |
5e570b75 | 1063 | #endif /* DOS_NT */ |
199607e4 | 1064 | int length; |
beb402de | 1065 | Lisp_Object handler, result; |
2b046a72 | 1066 | int multibyte; |
199607e4 | 1067 | |
b7826503 | 1068 | CHECK_STRING (name); |
570d7624 | 1069 | |
0bf2eed2 RS |
1070 | /* If the file name has special constructs in it, |
1071 | call the corresponding file handler. */ | |
49307295 | 1072 | handler = Ffind_file_name_handler (name, Qexpand_file_name); |
0bf2eed2 | 1073 | if (!NILP (handler)) |
3b7f6e60 | 1074 | return call3 (handler, Qexpand_file_name, name, default_directory); |
58fc9587 | 1075 | |
3b7f6e60 EN |
1076 | /* Use the buffer's default-directory if DEFAULT_DIRECTORY is omitted. */ |
1077 | if (NILP (default_directory)) | |
1078 | default_directory = current_buffer->directory; | |
82330e7f | 1079 | if (! STRINGP (default_directory)) |
dd693537 EZ |
1080 | { |
1081 | #ifdef DOS_NT | |
1082 | /* "/" is not considered a root directory on DOS_NT, so using "/" | |
1083 | here causes an infinite recursion in, e.g., the following: | |
1084 | ||
1085 | (let (default-directory) | |
1086 | (expand-file-name "a")) | |
1087 | ||
1088 | To avoid this, we set default_directory to the root of the | |
1089 | current drive. */ | |
1090 | extern char *emacs_root_dir (void); | |
1091 | ||
1092 | default_directory = build_string (emacs_root_dir ()); | |
1093 | #else | |
1094 | default_directory = build_string ("/"); | |
1095 | #endif | |
1096 | } | |
58fc9587 | 1097 | |
3b7f6e60 | 1098 | if (!NILP (default_directory)) |
273e0829 | 1099 | { |
3b7f6e60 | 1100 | handler = Ffind_file_name_handler (default_directory, Qexpand_file_name); |
273e0829 | 1101 | if (!NILP (handler)) |
3b7f6e60 | 1102 | return call3 (handler, Qexpand_file_name, name, default_directory); |
273e0829 | 1103 | } |
0bf2eed2 | 1104 | |
d5db4077 | 1105 | o = SDATA (default_directory); |
5e570b75 | 1106 | |
3b7f6e60 | 1107 | /* Make sure DEFAULT_DIRECTORY is properly expanded. |
f14b1c68 | 1108 | It would be better to do this down below where we actually use |
3b7f6e60 | 1109 | default_directory. Unfortunately, calling Fexpand_file_name recursively |
f14b1c68 JB |
1110 | could invoke GC, and the strings might be relocated. This would |
1111 | be annoying because we have pointers into strings lying around | |
1112 | that would need adjusting, and people would add new pointers to | |
1113 | the code and forget to adjust them, resulting in intermittent bugs. | |
4ad827c5 RS |
1114 | Putting this call here avoids all that crud. |
1115 | ||
1116 | The EQ test avoids infinite recursion. */ | |
3b7f6e60 | 1117 | if (! NILP (default_directory) && !EQ (default_directory, name) |
199607e4 RS |
1118 | /* Save time in some common cases - as long as default_directory |
1119 | is not relative, it can be canonicalized with name below (if it | |
1120 | is needed at all) without requiring it to be expanded now. */ | |
01937013 | 1121 | #ifdef DOS_NT |
199607e4 | 1122 | /* Detect MSDOS file names with drive specifiers. */ |
f0f95d31 | 1123 | && ! (IS_DRIVE (o[0]) && IS_DEVICE_SEP (o[1]) && IS_DIRECTORY_SEP (o[2])) |
199607e4 RS |
1124 | #ifdef WINDOWSNT |
1125 | /* Detect Windows file names in UNC format. */ | |
1126 | && ! (IS_DIRECTORY_SEP (o[0]) && IS_DIRECTORY_SEP (o[1])) | |
01937013 | 1127 | #endif |
199607e4 RS |
1128 | #else /* not DOS_NT */ |
1129 | /* Detect Unix absolute file names (/... alone is not absolute on | |
1130 | DOS or Windows). */ | |
1131 | && ! (IS_DIRECTORY_SEP (o[0])) | |
1132 | #endif /* not DOS_NT */ | |
1133 | ) | |
f14b1c68 JB |
1134 | { |
1135 | struct gcpro gcpro1; | |
1136 | ||
1137 | GCPRO1 (name); | |
3b7f6e60 | 1138 | default_directory = Fexpand_file_name (default_directory, Qnil); |
f14b1c68 JB |
1139 | UNGCPRO; |
1140 | } | |
1141 | ||
4c3c22f3 | 1142 | name = FILE_SYSTEM_CASE (name); |
2b046a72 | 1143 | multibyte = STRING_MULTIBYTE (name); |
6d060996 KH |
1144 | if (multibyte != STRING_MULTIBYTE (default_directory)) |
1145 | { | |
1146 | if (multibyte) | |
1147 | default_directory = string_to_multibyte (default_directory); | |
1148 | else | |
1149 | { | |
1150 | name = string_to_multibyte (name); | |
1151 | multibyte = 1; | |
1152 | } | |
1153 | } | |
1154 | ||
1155 | nm = SDATA (name); | |
a5a1cc06 | 1156 | |
5e570b75 | 1157 | #ifdef DOS_NT |
199607e4 RS |
1158 | /* We will force directory separators to be either all \ or /, so make |
1159 | a local copy to modify, even if there ends up being no change. */ | |
1160 | nm = strcpy (alloca (strlen (nm) + 1), nm); | |
1161 | ||
f0f95d31 RS |
1162 | /* Note if special escape prefix is present, but remove for now. */ |
1163 | if (nm[0] == '/' && nm[1] == ':') | |
1164 | { | |
1165 | is_escaped = 1; | |
1166 | nm += 2; | |
1167 | } | |
1168 | ||
199607e4 | 1169 | /* Find and remove drive specifier if present; this makes nm absolute |
f0f95d31 RS |
1170 | even if the rest of the name appears to be relative. Only look for |
1171 | drive specifier at the beginning. */ | |
1172 | if (IS_DRIVE (nm[0]) && IS_DEVICE_SEP (nm[1])) | |
1173 | { | |
1174 | drive = nm[0]; | |
1175 | nm += 2; | |
1176 | } | |
bb1ff1f4 GV |
1177 | |
1178 | #ifdef WINDOWSNT | |
1179 | /* If we see "c://somedir", we want to strip the first slash after the | |
1180 | colon when stripping the drive letter. Otherwise, this expands to | |
1181 | "//somedir". */ | |
1182 | if (drive && IS_DIRECTORY_SEP (nm[0]) && IS_DIRECTORY_SEP (nm[1])) | |
1183 | nm++; | |
1184 | #endif /* WINDOWSNT */ | |
5e570b75 | 1185 | #endif /* DOS_NT */ |
4c3c22f3 | 1186 | |
199607e4 RS |
1187 | #ifdef WINDOWSNT |
1188 | /* Discard any previous drive specifier if nm is now in UNC format. */ | |
1189 | if (IS_DIRECTORY_SEP (nm[0]) && IS_DIRECTORY_SEP (nm[1])) | |
1190 | { | |
1191 | drive = 0; | |
1192 | } | |
1193 | #endif | |
1194 | ||
214378ec GM |
1195 | /* If nm is absolute, look for `/./' or `/../' or `//''sequences; if |
1196 | none are found, we can probably return right away. We will avoid | |
1197 | allocating a new string if name is already fully expanded. */ | |
570d7624 | 1198 | if ( |
5e570b75 | 1199 | IS_DIRECTORY_SEP (nm[0]) |
199607e4 | 1200 | #ifdef MSDOS |
f0f95d31 | 1201 | && drive && !is_escaped |
199607e4 RS |
1202 | #endif |
1203 | #ifdef WINDOWSNT | |
f0f95d31 | 1204 | && (drive || IS_DIRECTORY_SEP (nm[1])) && !is_escaped |
199607e4 | 1205 | #endif |
570d7624 JB |
1206 | #ifdef VMS |
1207 | || index (nm, ':') | |
1208 | #endif /* VMS */ | |
1209 | ) | |
1210 | { | |
f14b1c68 JB |
1211 | /* If it turns out that the filename we want to return is just a |
1212 | suffix of FILENAME, we don't need to go through and edit | |
1213 | things; we just need to construct a new string using data | |
1214 | starting at the middle of FILENAME. If we set lose to a | |
1215 | non-zero value, that means we've discovered that we can't do | |
1216 | that cool trick. */ | |
1217 | int lose = 0; | |
1218 | ||
570d7624 | 1219 | p = nm; |
570d7624 JB |
1220 | while (*p) |
1221 | { | |
199607e4 | 1222 | /* Since we know the name is absolute, we can assume that each |
c77d647e JB |
1223 | element starts with a "/". */ |
1224 | ||
c77d647e | 1225 | /* "." and ".." are hairy. */ |
5e570b75 | 1226 | if (IS_DIRECTORY_SEP (p[0]) |
c77d647e | 1227 | && p[1] == '.' |
5e570b75 | 1228 | && (IS_DIRECTORY_SEP (p[2]) |
c77d647e | 1229 | || p[2] == 0 |
5e570b75 | 1230 | || (p[2] == '.' && (IS_DIRECTORY_SEP (p[3]) |
c77d647e | 1231 | || p[3] == 0)))) |
570d7624 | 1232 | lose = 1; |
214378ec GM |
1233 | /* We want to replace multiple `/' in a row with a single |
1234 | slash. */ | |
1235 | else if (p > nm | |
1236 | && IS_DIRECTORY_SEP (p[0]) | |
1237 | && IS_DIRECTORY_SEP (p[1])) | |
1238 | lose = 1; | |
efdc16c9 | 1239 | |
570d7624 JB |
1240 | #ifdef VMS |
1241 | if (p[0] == '\\') | |
1242 | lose = 1; | |
1243 | if (p[0] == '/') { | |
1244 | /* if dev:[dir]/, move nm to / */ | |
1245 | if (!slash && p > nm && (brack || colon)) { | |
1246 | nm = (brack ? brack + 1 : colon + 1); | |
1247 | lbrack = rbrack = 0; | |
1248 | brack = 0; | |
1249 | colon = 0; | |
1250 | } | |
1251 | slash = p; | |
1252 | } | |
1253 | if (p[0] == '-') | |
ad204e95 | 1254 | #ifdef NO_HYPHENS_IN_FILENAMES |
570d7624 JB |
1255 | if (lbrack == rbrack) |
1256 | { | |
ad204e95 TTN |
1257 | /* Avoid clobbering negative version numbers. */ |
1258 | if (dots < 2) | |
570d7624 JB |
1259 | p[0] = '_'; |
1260 | } | |
1261 | else | |
ad204e95 | 1262 | #endif /* NO_HYPHENS_IN_FILENAMES */ |
994a7262 RS |
1263 | if (lbrack > rbrack |
1264 | && ((p[-1] == '.' || p[-1] == '[' || p[-1] == '<') | |
1265 | && (p[1] == '.' || p[1] == ']' || p[1] == '>'))) | |
570d7624 | 1266 | lose = 1; |
ad204e95 | 1267 | #ifdef NO_HYPHENS_IN_FILENAMES |
570d7624 JB |
1268 | else |
1269 | p[0] = '_'; | |
ad204e95 | 1270 | #endif /* NO_HYPHENS_IN_FILENAMES */ |
570d7624 JB |
1271 | /* count open brackets, reset close bracket pointer */ |
1272 | if (p[0] == '[' || p[0] == '<') | |
1273 | lbrack++, brack = 0; | |
1274 | /* count close brackets, set close bracket pointer */ | |
1275 | if (p[0] == ']' || p[0] == '>') | |
1276 | rbrack++, brack = p; | |
1277 | /* detect ][ or >< */ | |
1278 | if ((p[0] == ']' || p[0] == '>') && (p[1] == '[' || p[1] == '<')) | |
1279 | lose = 1; | |
1280 | if ((p[0] == ':' || p[0] == ']' || p[0] == '>') && p[1] == '~') | |
1281 | nm = p + 1, lose = 1; | |
1282 | if (p[0] == ':' && (colon || slash)) | |
1283 | /* if dev1:[dir]dev2:, move nm to dev2: */ | |
1284 | if (brack) | |
1285 | { | |
1286 | nm = brack + 1; | |
1287 | brack = 0; | |
1288 | } | |
199607e4 | 1289 | /* if /name/dev:, move nm to dev: */ |
570d7624 JB |
1290 | else if (slash) |
1291 | nm = slash + 1; | |
1292 | /* if node::dev:, move colon following dev */ | |
1293 | else if (colon && colon[-1] == ':') | |
1294 | colon = p; | |
1295 | /* if dev1:dev2:, move nm to dev2: */ | |
1296 | else if (colon && colon[-1] != ':') | |
1297 | { | |
1298 | nm = colon + 1; | |
1299 | colon = 0; | |
1300 | } | |
1301 | if (p[0] == ':' && !colon) | |
1302 | { | |
1303 | if (p[1] == ':') | |
1304 | p++; | |
1305 | colon = p; | |
1306 | } | |
1307 | if (lbrack == rbrack) | |
1308 | if (p[0] == ';') | |
1309 | dots = 2; | |
1310 | else if (p[0] == '.') | |
1311 | dots++; | |
1312 | #endif /* VMS */ | |
1313 | p++; | |
1314 | } | |
1315 | if (!lose) | |
1316 | { | |
1317 | #ifdef VMS | |
1318 | if (index (nm, '/')) | |
d7231f93 KH |
1319 | { |
1320 | nm = sys_translate_unix (nm); | |
2b046a72 | 1321 | return make_specified_string (nm, -1, strlen (nm), multibyte); |
d7231f93 | 1322 | } |
570d7624 | 1323 | #endif /* VMS */ |
199607e4 RS |
1324 | #ifdef DOS_NT |
1325 | /* Make sure directories are all separated with / or \ as | |
1326 | desired, but avoid allocation of a new string when not | |
1327 | required. */ | |
1328 | CORRECT_DIR_SEPS (nm); | |
1329 | #ifdef WINDOWSNT | |
1330 | if (IS_DIRECTORY_SEP (nm[1])) | |
1331 | { | |
d5db4077 | 1332 | if (strcmp (nm, SDATA (name)) != 0) |
2b046a72 | 1333 | name = make_specified_string (nm, -1, strlen (nm), multibyte); |
199607e4 RS |
1334 | } |
1335 | else | |
1336 | #endif | |
1337 | /* drive must be set, so this is okay */ | |
d5db4077 | 1338 | if (strcmp (nm - 2, SDATA (name)) != 0) |
199607e4 | 1339 | { |
3f817c73 KH |
1340 | char temp[] = " :"; |
1341 | ||
2b046a72 | 1342 | name = make_specified_string (nm, -1, p - nm, multibyte); |
3f817c73 KH |
1343 | temp[0] = DRIVE_LETTER (drive); |
1344 | name = concat2 (build_string (temp), name); | |
199607e4 RS |
1345 | } |
1346 | return name; | |
1347 | #else /* not DOS_NT */ | |
d5db4077 | 1348 | if (nm == SDATA (name)) |
570d7624 | 1349 | return name; |
2b046a72 | 1350 | return make_specified_string (nm, -1, strlen (nm), multibyte); |
5e570b75 | 1351 | #endif /* not DOS_NT */ |
570d7624 JB |
1352 | } |
1353 | } | |
1354 | ||
199607e4 RS |
1355 | /* At this point, nm might or might not be an absolute file name. We |
1356 | need to expand ~ or ~user if present, otherwise prefix nm with | |
1357 | default_directory if nm is not absolute, and finally collapse /./ | |
1358 | and /foo/../ sequences. | |
1359 | ||
1360 | We set newdir to be the appropriate prefix if one is needed: | |
1361 | - the relevant user directory if nm starts with ~ or ~user | |
1362 | - the specified drive's working dir (DOS/NT only) if nm does not | |
1363 | start with / | |
1364 | - the value of default_directory. | |
1365 | ||
1366 | Note that these prefixes are not guaranteed to be absolute (except | |
1367 | for the working dir of a drive). Therefore, to ensure we always | |
1368 | return an absolute name, if the final prefix is not absolute we | |
1369 | append it to the current working directory. */ | |
570d7624 JB |
1370 | |
1371 | newdir = 0; | |
1372 | ||
1373 | if (nm[0] == '~') /* prefix ~ */ | |
c77d647e | 1374 | { |
5e570b75 | 1375 | if (IS_DIRECTORY_SEP (nm[1]) |
570d7624 | 1376 | #ifdef VMS |
c77d647e | 1377 | || nm[1] == ':' |
5e570b75 | 1378 | #endif /* VMS */ |
c77d647e JB |
1379 | || nm[1] == 0) /* ~ by itself */ |
1380 | { | |
1381 | if (!(newdir = (unsigned char *) egetenv ("HOME"))) | |
1382 | newdir = (unsigned char *) ""; | |
199607e4 | 1383 | nm++; |
5e570b75 | 1384 | #ifdef DOS_NT |
9a1dc3be | 1385 | collapse_newdir = 0; |
4c3c22f3 | 1386 | #endif |
570d7624 | 1387 | #ifdef VMS |
c77d647e | 1388 | nm++; /* Don't leave the slash in nm. */ |
5e570b75 | 1389 | #endif /* VMS */ |
c77d647e JB |
1390 | } |
1391 | else /* ~user/filename */ | |
1392 | { | |
5e570b75 | 1393 | for (p = nm; *p && (!IS_DIRECTORY_SEP (*p) |
570d7624 | 1394 | #ifdef VMS |
c77d647e | 1395 | && *p != ':' |
5e570b75 | 1396 | #endif /* VMS */ |
c77d647e JB |
1397 | ); p++); |
1398 | o = (unsigned char *) alloca (p - nm + 1); | |
1399 | bcopy ((char *) nm, o, p - nm); | |
1400 | o [p - nm] = 0; | |
1401 | ||
67c08d6c | 1402 | BLOCK_INPUT; |
c77d647e | 1403 | pw = (struct passwd *) getpwnam (o + 1); |
67c08d6c | 1404 | UNBLOCK_INPUT; |
c77d647e JB |
1405 | if (pw) |
1406 | { | |
1407 | newdir = (unsigned char *) pw -> pw_dir; | |
570d7624 | 1408 | #ifdef VMS |
c77d647e | 1409 | nm = p + 1; /* skip the terminator */ |
570d7624 | 1410 | #else |
c77d647e | 1411 | nm = p; |
199607e4 | 1412 | #ifdef DOS_NT |
9a1dc3be | 1413 | collapse_newdir = 0; |
199607e4 | 1414 | #endif |
5e570b75 | 1415 | #endif /* VMS */ |
c77d647e | 1416 | } |
e5d77022 | 1417 | |
c77d647e JB |
1418 | /* If we don't find a user of that name, leave the name |
1419 | unchanged; don't move nm forward to p. */ | |
1420 | } | |
1421 | } | |
570d7624 | 1422 | |
5e570b75 | 1423 | #ifdef DOS_NT |
199607e4 RS |
1424 | /* On DOS and Windows, nm is absolute if a drive name was specified; |
1425 | use the drive's current directory as the prefix if needed. */ | |
1426 | if (!newdir && drive) | |
1427 | { | |
1428 | /* Get default directory if needed to make nm absolute. */ | |
1429 | if (!IS_DIRECTORY_SEP (nm[0])) | |
1430 | { | |
1431 | newdir = alloca (MAXPATHLEN + 1); | |
1432 | if (!getdefdir (toupper (drive) - 'A' + 1, newdir)) | |
1433 | newdir = NULL; | |
1434 | } | |
1435 | if (!newdir) | |
1436 | { | |
1437 | /* Either nm starts with /, or drive isn't mounted. */ | |
1438 | newdir = alloca (4); | |
f94988a7 | 1439 | newdir[0] = DRIVE_LETTER (drive); |
199607e4 RS |
1440 | newdir[1] = ':'; |
1441 | newdir[2] = '/'; | |
1442 | newdir[3] = 0; | |
1443 | } | |
1444 | } | |
5e570b75 | 1445 | #endif /* DOS_NT */ |
199607e4 RS |
1446 | |
1447 | /* Finally, if no prefix has been specified and nm is not absolute, | |
1448 | then it must be expanded relative to default_directory. */ | |
1449 | ||
34097368 | 1450 | if (1 |
199607e4 RS |
1451 | #ifndef DOS_NT |
1452 | /* /... alone is not absolute on DOS and Windows. */ | |
34097368 | 1453 | && !IS_DIRECTORY_SEP (nm[0]) |
199607e4 RS |
1454 | #endif |
1455 | #ifdef WINDOWSNT | |
34097368 | 1456 | && !(IS_DIRECTORY_SEP (nm[0]) && IS_DIRECTORY_SEP (nm[1])) |
199607e4 RS |
1457 | #endif |
1458 | #ifdef VMS | |
1459 | && !index (nm, ':') | |
1460 | #endif | |
570d7624 JB |
1461 | && !newdir) |
1462 | { | |
d5db4077 | 1463 | newdir = SDATA (default_directory); |
f0f95d31 RS |
1464 | #ifdef DOS_NT |
1465 | /* Note if special escape prefix is present, but remove for now. */ | |
1466 | if (newdir[0] == '/' && newdir[1] == ':') | |
1467 | { | |
1468 | is_escaped = 1; | |
1469 | newdir += 2; | |
1470 | } | |
1471 | #endif | |
570d7624 JB |
1472 | } |
1473 | ||
5e570b75 | 1474 | #ifdef DOS_NT |
199607e4 RS |
1475 | if (newdir) |
1476 | { | |
1477 | /* First ensure newdir is an absolute name. */ | |
1478 | if ( | |
1479 | /* Detect MSDOS file names with drive specifiers. */ | |
1480 | ! (IS_DRIVE (newdir[0]) | |
1481 | && IS_DEVICE_SEP (newdir[1]) && IS_DIRECTORY_SEP (newdir[2])) | |
1482 | #ifdef WINDOWSNT | |
1483 | /* Detect Windows file names in UNC format. */ | |
1484 | && ! (IS_DIRECTORY_SEP (newdir[0]) && IS_DIRECTORY_SEP (newdir[1])) | |
1485 | #endif | |
1486 | ) | |
1487 | { | |
1488 | /* Effectively, let newdir be (expand-file-name newdir cwd). | |
1489 | Because of the admonition against calling expand-file-name | |
1490 | when we have pointers into lisp strings, we accomplish this | |
1491 | indirectly by prepending newdir to nm if necessary, and using | |
1492 | cwd (or the wd of newdir's drive) as the new newdir. */ | |
1493 | ||
c70a4df6 | 1494 | if (IS_DRIVE (newdir[0]) && IS_DEVICE_SEP (newdir[1])) |
199607e4 RS |
1495 | { |
1496 | drive = newdir[0]; | |
1497 | newdir += 2; | |
1498 | } | |
1499 | if (!IS_DIRECTORY_SEP (nm[0])) | |
1500 | { | |
1501 | char * tmp = alloca (strlen (newdir) + strlen (nm) + 2); | |
1502 | file_name_as_directory (tmp, newdir); | |
1503 | strcat (tmp, nm); | |
1504 | nm = tmp; | |
1505 | } | |
1506 | newdir = alloca (MAXPATHLEN + 1); | |
1507 | if (drive) | |
1508 | { | |
1509 | if (!getdefdir (toupper (drive) - 'A' + 1, newdir)) | |
1510 | newdir = "/"; | |
1511 | } | |
1512 | else | |
1513 | getwd (newdir); | |
1514 | } | |
1515 | ||
1516 | /* Strip off drive name from prefix, if present. */ | |
c70a4df6 | 1517 | if (IS_DRIVE (newdir[0]) && IS_DEVICE_SEP (newdir[1])) |
199607e4 RS |
1518 | { |
1519 | drive = newdir[0]; | |
1520 | newdir += 2; | |
1521 | } | |
1522 | ||
1523 | /* Keep only a prefix from newdir if nm starts with slash | |
82330e7f | 1524 | (//server/share for UNC, nothing otherwise). */ |
9a1dc3be | 1525 | if (IS_DIRECTORY_SEP (nm[0]) && collapse_newdir) |
199607e4 RS |
1526 | { |
1527 | #ifdef WINDOWSNT | |
1528 | if (IS_DIRECTORY_SEP (newdir[0]) && IS_DIRECTORY_SEP (newdir[1])) | |
1529 | { | |
1530 | newdir = strcpy (alloca (strlen (newdir) + 1), newdir); | |
1531 | p = newdir + 2; | |
1532 | while (*p && !IS_DIRECTORY_SEP (*p)) p++; | |
1533 | p++; | |
1534 | while (*p && !IS_DIRECTORY_SEP (*p)) p++; | |
1535 | *p = 0; | |
1536 | } | |
1537 | else | |
1538 | #endif | |
1539 | newdir = ""; | |
1540 | } | |
1541 | } | |
5e570b75 | 1542 | #endif /* DOS_NT */ |
199607e4 RS |
1543 | |
1544 | if (newdir) | |
bfb61299 | 1545 | { |
57676091 | 1546 | /* Get rid of any slash at the end of newdir, unless newdir is |
f0f95d31 | 1547 | just / or // (an incomplete UNC name). */ |
199607e4 | 1548 | length = strlen (newdir); |
f0f95d31 | 1549 | if (length > 1 && IS_DIRECTORY_SEP (newdir[length - 1]) |
57676091 RS |
1550 | #ifdef WINDOWSNT |
1551 | && !(length == 2 && IS_DIRECTORY_SEP (newdir[0])) | |
1552 | #endif | |
1553 | ) | |
bfb61299 JB |
1554 | { |
1555 | unsigned char *temp = (unsigned char *) alloca (length); | |
1556 | bcopy (newdir, temp, length - 1); | |
1557 | temp[length - 1] = 0; | |
1558 | newdir = temp; | |
1559 | } | |
1560 | tlen = length + 1; | |
1561 | } | |
1562 | else | |
1563 | tlen = 0; | |
570d7624 | 1564 | |
bfb61299 JB |
1565 | /* Now concatenate the directory and name to new space in the stack frame */ |
1566 | tlen += strlen (nm) + 1; | |
5e570b75 | 1567 | #ifdef DOS_NT |
f0f95d31 RS |
1568 | /* Reserve space for drive specifier and escape prefix, since either |
1569 | or both may need to be inserted. (The Microsoft x86 compiler | |
5e570b75 | 1570 | produces incorrect code if the following two lines are combined.) */ |
f0f95d31 RS |
1571 | target = (unsigned char *) alloca (tlen + 4); |
1572 | target += 4; | |
5e570b75 | 1573 | #else /* not DOS_NT */ |
570d7624 | 1574 | target = (unsigned char *) alloca (tlen); |
5e570b75 | 1575 | #endif /* not DOS_NT */ |
570d7624 JB |
1576 | *target = 0; |
1577 | ||
1578 | if (newdir) | |
1579 | { | |
1580 | #ifndef VMS | |
5e570b75 | 1581 | if (nm[0] == 0 || IS_DIRECTORY_SEP (nm[0])) |
f5321b5c | 1582 | { |
3ea2d8b2 | 1583 | #ifdef DOS_NT |
f5321b5c RS |
1584 | /* If newdir is effectively "C:/", then the drive letter will have |
1585 | been stripped and newdir will be "/". Concatenating with an | |
1586 | absolute directory in nm produces "//", which will then be | |
1587 | incorrectly treated as a network share. Ignore newdir in | |
1588 | this case (keeping the drive letter). */ | |
efdc16c9 | 1589 | if (!(drive && nm[0] && IS_DIRECTORY_SEP (newdir[0]) |
f5321b5c RS |
1590 | && newdir[1] == '\0')) |
1591 | #endif | |
1592 | strcpy (target, newdir); | |
1593 | } | |
570d7624 JB |
1594 | else |
1595 | #endif | |
c77d647e | 1596 | file_name_as_directory (target, newdir); |
570d7624 JB |
1597 | } |
1598 | ||
1599 | strcat (target, nm); | |
1600 | #ifdef VMS | |
1601 | if (index (target, '/')) | |
1602 | strcpy (target, sys_translate_unix (target)); | |
1603 | #endif /* VMS */ | |
1604 | ||
199607e4 RS |
1605 | /* ASSERT (IS_DIRECTORY_SEP (target[0])) if not VMS */ |
1606 | ||
214378ec GM |
1607 | /* Now canonicalize by removing `//', `/.' and `/foo/..' if they |
1608 | appear. */ | |
570d7624 JB |
1609 | |
1610 | p = target; | |
1611 | o = target; | |
1612 | ||
1613 | while (*p) | |
1614 | { | |
1615 | #ifdef VMS | |
1616 | if (*p != ']' && *p != '>' && *p != '-') | |
1617 | { | |
1618 | if (*p == '\\') | |
1619 | p++; | |
1620 | *o++ = *p++; | |
1621 | } | |
1622 | else if ((p[0] == ']' || p[0] == '>') && p[0] == p[1] + 2) | |
1623 | /* brackets are offset from each other by 2 */ | |
1624 | { | |
1625 | p += 2; | |
1626 | if (*p != '.' && *p != '-' && o[-1] != '.') | |
1627 | /* convert [foo][bar] to [bar] */ | |
1628 | while (o[-1] != '[' && o[-1] != '<') | |
1629 | o--; | |
1630 | else if (*p == '-' && *o != '.') | |
1631 | *--p = '.'; | |
1632 | } | |
994a7262 RS |
1633 | else if (p[0] == '-' && o[-1] == '.' |
1634 | && (p[1] == '.' || p[1] == ']' || p[1] == '>')) | |
570d7624 JB |
1635 | /* flush .foo.- ; leave - if stopped by '[' or '<' */ |
1636 | { | |
1637 | do | |
1638 | o--; | |
1639 | while (o[-1] != '.' && o[-1] != '[' && o[-1] != '<'); | |
5e570b75 | 1640 | if (p[1] == '.') /* foo.-.bar ==> bar. */ |
570d7624 JB |
1641 | p += 2; |
1642 | else if (o[-1] == '.') /* '.foo.-]' ==> ']' */ | |
1643 | p++, o--; | |
1644 | /* else [foo.-] ==> [-] */ | |
1645 | } | |
1646 | else | |
1647 | { | |
ad204e95 | 1648 | #ifdef NO_HYPHENS_IN_FILENAMES |
994a7262 RS |
1649 | if (*p == '-' |
1650 | && o[-1] != '[' && o[-1] != '<' && o[-1] != '.' | |
1651 | && p[1] != ']' && p[1] != '>' && p[1] != '.') | |
570d7624 | 1652 | *p = '_'; |
ad204e95 | 1653 | #endif /* NO_HYPHENS_IN_FILENAMES */ |
570d7624 JB |
1654 | *o++ = *p++; |
1655 | } | |
1656 | #else /* not VMS */ | |
5e570b75 RS |
1657 | if (!IS_DIRECTORY_SEP (*p)) |
1658 | { | |
570d7624 JB |
1659 | *o++ = *p++; |
1660 | } | |
b8f7f3be | 1661 | else if (p[1] == '.' |
5e570b75 | 1662 | && (IS_DIRECTORY_SEP (p[2]) |
c77d647e JB |
1663 | || p[2] == 0)) |
1664 | { | |
1665 | /* If "/." is the entire filename, keep the "/". Otherwise, | |
1666 | just delete the whole "/.". */ | |
1667 | if (o == target && p[2] == '\0') | |
1668 | *o++ = *p; | |
1669 | p += 2; | |
1670 | } | |
b8f7f3be | 1671 | else if (p[1] == '.' && p[2] == '.' |
aa4060b9 EZ |
1672 | /* `/../' is the "superroot" on certain file systems. |
1673 | Turned off on DOS_NT systems because they have no | |
1674 | "superroot" and because this causes us to produce | |
1675 | file names like "d:/../foo" which fail file-related | |
1676 | functions of the underlying OS. (To reproduce, try a | |
1677 | long series of "../../" in default_directory, longer | |
1678 | than the number of levels from the root.) */ | |
1679 | #ifndef DOS_NT | |
570d7624 | 1680 | && o != target |
aa4060b9 | 1681 | #endif |
5e570b75 | 1682 | && (IS_DIRECTORY_SEP (p[3]) || p[3] == 0)) |
570d7624 | 1683 | { |
5e570b75 | 1684 | while (o != target && (--o) && !IS_DIRECTORY_SEP (*o)) |
570d7624 | 1685 | ; |
795de720 RS |
1686 | /* Keep initial / only if this is the whole name. */ |
1687 | if (o == target && IS_ANY_SEP (*o) && p[3] == 0) | |
51b1d12e | 1688 | ++o; |
570d7624 JB |
1689 | p += 3; |
1690 | } | |
b8f7f3be SM |
1691 | else if (p > target && IS_DIRECTORY_SEP (p[1])) |
1692 | /* Collapse multiple `/' in a row. */ | |
1693 | p++; | |
570d7624 | 1694 | else |
5e570b75 | 1695 | { |
570d7624 JB |
1696 | *o++ = *p++; |
1697 | } | |
1698 | #endif /* not VMS */ | |
1699 | } | |
1700 | ||
5e570b75 | 1701 | #ifdef DOS_NT |
199607e4 | 1702 | /* At last, set drive name. */ |
5e570b75 | 1703 | #ifdef WINDOWSNT |
199607e4 RS |
1704 | /* Except for network file name. */ |
1705 | if (!(IS_DIRECTORY_SEP (target[0]) && IS_DIRECTORY_SEP (target[1]))) | |
5e570b75 | 1706 | #endif /* WINDOWSNT */ |
4c3c22f3 | 1707 | { |
199607e4 | 1708 | if (!drive) abort (); |
4c3c22f3 | 1709 | target -= 2; |
f94988a7 | 1710 | target[0] = DRIVE_LETTER (drive); |
4c3c22f3 RS |
1711 | target[1] = ':'; |
1712 | } | |
f0f95d31 RS |
1713 | /* Reinsert the escape prefix if required. */ |
1714 | if (is_escaped) | |
1715 | { | |
1716 | target -= 2; | |
1717 | target[0] = '/'; | |
1718 | target[1] = ':'; | |
1719 | } | |
199607e4 | 1720 | CORRECT_DIR_SEPS (target); |
5e570b75 | 1721 | #endif /* DOS_NT */ |
4c3c22f3 | 1722 | |
2b046a72 | 1723 | result = make_specified_string (target, -1, o - target, multibyte); |
beb402de KG |
1724 | |
1725 | /* Again look to see if the file name has special constructs in it | |
1726 | and perhaps call the corresponding file handler. This is needed | |
1727 | for filenames such as "/foo/../user@host:/bar/../baz". Expanding | |
1728 | the ".." component gives us "/user@host:/bar/../baz" which needs | |
1729 | to be expanded again. */ | |
1730 | handler = Ffind_file_name_handler (result, Qexpand_file_name); | |
1731 | if (!NILP (handler)) | |
1732 | return call3 (handler, Qexpand_file_name, result, default_directory); | |
1733 | ||
1734 | return result; | |
570d7624 | 1735 | } |
5e570b75 | 1736 | |
4887597a EZ |
1737 | #if 0 |
1738 | /* PLEASE DO NOT DELETE THIS COMMENTED-OUT VERSION! | |
1739 | This is the old version of expand-file-name, before it was thoroughly | |
1740 | rewritten for Emacs 10.31. We leave this version here commented-out, | |
1741 | because the code is very complex and likely to have subtle bugs. If | |
1742 | bugs _are_ found, it might be of interest to look at the old code and | |
1743 | see what did it do in the relevant situation. | |
1744 | ||
1745 | Don't remove this code: it's true that it will be accessible via CVS, | |
1746 | but a few years from deletion, people will forget it is there. */ | |
1747 | ||
1748 | /* Changed this DEFUN to a DEAFUN, so as not to confuse `make-docfile'. */ | |
1749 | DEAFUN ("expand-file-name", Fexpand_file_name, Sexpand_file_name, 1, 2, 0, | |
1750 | "Convert FILENAME to absolute, and canonicalize it.\n\ | |
1751 | Second arg DEFAULT is directory to start with if FILENAME is relative\n\ | |
c70a4df6 | 1752 | \(does not start with slash); if DEFAULT is nil or missing,\n\ |
4887597a EZ |
1753 | the current buffer's value of default-directory is used.\n\ |
1754 | Filenames containing `.' or `..' as components are simplified;\n\ | |
1755 | initial `~/' expands to your home directory.\n\ | |
1756 | See also the function `substitute-in-file-name'.") | |
1757 | (name, defalt) | |
1758 | Lisp_Object name, defalt; | |
1759 | { | |
1760 | unsigned char *nm; | |
1761 | ||
1762 | register unsigned char *newdir, *p, *o; | |
1763 | int tlen; | |
1764 | unsigned char *target; | |
1765 | struct passwd *pw; | |
1766 | int lose; | |
1767 | #ifdef VMS | |
1768 | unsigned char * colon = 0; | |
1769 | unsigned char * close = 0; | |
1770 | unsigned char * slash = 0; | |
1771 | unsigned char * brack = 0; | |
1772 | int lbrack = 0, rbrack = 0; | |
1773 | int dots = 0; | |
1774 | #endif /* VMS */ | |
1775 | ||
b7826503 | 1776 | CHECK_STRING (name); |
4887597a EZ |
1777 | |
1778 | #ifdef VMS | |
1779 | /* Filenames on VMS are always upper case. */ | |
1780 | name = Fupcase (name); | |
1781 | #endif | |
1782 | ||
d5db4077 | 1783 | nm = SDATA (name); |
4887597a EZ |
1784 | |
1785 | /* If nm is absolute, flush ...// and detect /./ and /../. | |
1786 | If no /./ or /../ we can return right away. */ | |
1787 | if ( | |
1788 | nm[0] == '/' | |
1789 | #ifdef VMS | |
1790 | || index (nm, ':') | |
1791 | #endif /* VMS */ | |
1792 | ) | |
1793 | { | |
1794 | p = nm; | |
1795 | lose = 0; | |
1796 | while (*p) | |
1797 | { | |
1798 | if (p[0] == '/' && p[1] == '/' | |
4887597a EZ |
1799 | ) |
1800 | nm = p + 1; | |
1801 | if (p[0] == '/' && p[1] == '~') | |
1802 | nm = p + 1, lose = 1; | |
1803 | if (p[0] == '/' && p[1] == '.' | |
1804 | && (p[2] == '/' || p[2] == 0 | |
1805 | || (p[2] == '.' && (p[3] == '/' || p[3] == 0)))) | |
1806 | lose = 1; | |
1807 | #ifdef VMS | |
1808 | if (p[0] == '\\') | |
1809 | lose = 1; | |
1810 | if (p[0] == '/') { | |
1811 | /* if dev:[dir]/, move nm to / */ | |
1812 | if (!slash && p > nm && (brack || colon)) { | |
1813 | nm = (brack ? brack + 1 : colon + 1); | |
1814 | lbrack = rbrack = 0; | |
1815 | brack = 0; | |
1816 | colon = 0; | |
1817 | } | |
1818 | slash = p; | |
1819 | } | |
1820 | if (p[0] == '-') | |
1821 | #ifndef VMS4_4 | |
1822 | /* VMS pre V4.4,convert '-'s in filenames. */ | |
1823 | if (lbrack == rbrack) | |
1824 | { | |
1825 | if (dots < 2) /* this is to allow negative version numbers */ | |
1826 | p[0] = '_'; | |
1827 | } | |
1828 | else | |
1829 | #endif /* VMS4_4 */ | |
994a7262 RS |
1830 | if (lbrack > rbrack |
1831 | && ((p[-1] == '.' || p[-1] == '[' || p[-1] == '<') | |
1832 | && (p[1] == '.' || p[1] == ']' || p[1] == '>'))) | |
4887597a EZ |
1833 | lose = 1; |
1834 | #ifndef VMS4_4 | |
1835 | else | |
1836 | p[0] = '_'; | |
1837 | #endif /* VMS4_4 */ | |
1838 | /* count open brackets, reset close bracket pointer */ | |
1839 | if (p[0] == '[' || p[0] == '<') | |
1840 | lbrack++, brack = 0; | |
1841 | /* count close brackets, set close bracket pointer */ | |
1842 | if (p[0] == ']' || p[0] == '>') | |
1843 | rbrack++, brack = p; | |
1844 | /* detect ][ or >< */ | |
1845 | if ((p[0] == ']' || p[0] == '>') && (p[1] == '[' || p[1] == '<')) | |
1846 | lose = 1; | |
1847 | if ((p[0] == ':' || p[0] == ']' || p[0] == '>') && p[1] == '~') | |
1848 | nm = p + 1, lose = 1; | |
1849 | if (p[0] == ':' && (colon || slash)) | |
1850 | /* if dev1:[dir]dev2:, move nm to dev2: */ | |
1851 | if (brack) | |
1852 | { | |
1853 | nm = brack + 1; | |
1854 | brack = 0; | |
1855 | } | |
1856 | /* If /name/dev:, move nm to dev: */ | |
1857 | else if (slash) | |
1858 | nm = slash + 1; | |
1859 | /* If node::dev:, move colon following dev */ | |
1860 | else if (colon && colon[-1] == ':') | |
1861 | colon = p; | |
1862 | /* If dev1:dev2:, move nm to dev2: */ | |
1863 | else if (colon && colon[-1] != ':') | |
1864 | { | |
1865 | nm = colon + 1; | |
1866 | colon = 0; | |
1867 | } | |
1868 | if (p[0] == ':' && !colon) | |
1869 | { | |
1870 | if (p[1] == ':') | |
1871 | p++; | |
1872 | colon = p; | |
1873 | } | |
1874 | if (lbrack == rbrack) | |
1875 | if (p[0] == ';') | |
1876 | dots = 2; | |
1877 | else if (p[0] == '.') | |
1878 | dots++; | |
1879 | #endif /* VMS */ | |
1880 | p++; | |
1881 | } | |
1882 | if (!lose) | |
1883 | { | |
1884 | #ifdef VMS | |
1885 | if (index (nm, '/')) | |
1886 | return build_string (sys_translate_unix (nm)); | |
1887 | #endif /* VMS */ | |
d5db4077 | 1888 | if (nm == SDATA (name)) |
4887597a EZ |
1889 | return name; |
1890 | return build_string (nm); | |
1891 | } | |
1892 | } | |
1893 | ||
1894 | /* Now determine directory to start with and put it in NEWDIR */ | |
1895 | ||
1896 | newdir = 0; | |
1897 | ||
1898 | if (nm[0] == '~') /* prefix ~ */ | |
1899 | if (nm[1] == '/' | |
1900 | #ifdef VMS | |
1901 | || nm[1] == ':' | |
1902 | #endif /* VMS */ | |
1903 | || nm[1] == 0)/* ~/filename */ | |
1904 | { | |
1905 | if (!(newdir = (unsigned char *) egetenv ("HOME"))) | |
1906 | newdir = (unsigned char *) ""; | |
1907 | nm++; | |
1908 | #ifdef VMS | |
1909 | nm++; /* Don't leave the slash in nm. */ | |
1910 | #endif /* VMS */ | |
1911 | } | |
1912 | else /* ~user/filename */ | |
1913 | { | |
1914 | /* Get past ~ to user */ | |
1915 | unsigned char *user = nm + 1; | |
1916 | /* Find end of name. */ | |
1917 | unsigned char *ptr = (unsigned char *) index (user, '/'); | |
1918 | int len = ptr ? ptr - user : strlen (user); | |
1919 | #ifdef VMS | |
1920 | unsigned char *ptr1 = index (user, ':'); | |
1921 | if (ptr1 != 0 && ptr1 - user < len) | |
1922 | len = ptr1 - user; | |
1923 | #endif /* VMS */ | |
1924 | /* Copy the user name into temp storage. */ | |
1925 | o = (unsigned char *) alloca (len + 1); | |
1926 | bcopy ((char *) user, o, len); | |
1927 | o[len] = 0; | |
1928 | ||
1929 | /* Look up the user name. */ | |
67c08d6c | 1930 | BLOCK_INPUT; |
4887597a | 1931 | pw = (struct passwd *) getpwnam (o + 1); |
67c08d6c | 1932 | UNBLOCK_INPUT; |
4887597a EZ |
1933 | if (!pw) |
1934 | error ("\"%s\" isn't a registered user", o + 1); | |
1935 | ||
1936 | newdir = (unsigned char *) pw->pw_dir; | |
1937 | ||
1938 | /* Discard the user name from NM. */ | |
1939 | nm += len; | |
1940 | } | |
1941 | ||
1942 | if (nm[0] != '/' | |
1943 | #ifdef VMS | |
1944 | && !index (nm, ':') | |
1945 | #endif /* not VMS */ | |
1946 | && !newdir) | |
1947 | { | |
1948 | if (NILP (defalt)) | |
1949 | defalt = current_buffer->directory; | |
b7826503 | 1950 | CHECK_STRING (defalt); |
d5db4077 | 1951 | newdir = SDATA (defalt); |
4887597a EZ |
1952 | } |
1953 | ||
1954 | /* Now concatenate the directory and name to new space in the stack frame */ | |
1955 | ||
1956 | tlen = (newdir ? strlen (newdir) + 1 : 0) + strlen (nm) + 1; | |
1957 | target = (unsigned char *) alloca (tlen); | |
1958 | *target = 0; | |
1959 | ||
1960 | if (newdir) | |
1961 | { | |
1962 | #ifndef VMS | |
1963 | if (nm[0] == 0 || nm[0] == '/') | |
1964 | strcpy (target, newdir); | |
1965 | else | |
1966 | #endif | |
1967 | file_name_as_directory (target, newdir); | |
1968 | } | |
1969 | ||
1970 | strcat (target, nm); | |
1971 | #ifdef VMS | |
1972 | if (index (target, '/')) | |
1973 | strcpy (target, sys_translate_unix (target)); | |
1974 | #endif /* VMS */ | |
1975 | ||
1976 | /* Now canonicalize by removing /. and /foo/.. if they appear */ | |
1977 | ||
1978 | p = target; | |
1979 | o = target; | |
1980 | ||
1981 | while (*p) | |
1982 | { | |
1983 | #ifdef VMS | |
1984 | if (*p != ']' && *p != '>' && *p != '-') | |
1985 | { | |
1986 | if (*p == '\\') | |
1987 | p++; | |
1988 | *o++ = *p++; | |
1989 | } | |
1990 | else if ((p[0] == ']' || p[0] == '>') && p[0] == p[1] + 2) | |
1991 | /* brackets are offset from each other by 2 */ | |
1992 | { | |
1993 | p += 2; | |
1994 | if (*p != '.' && *p != '-' && o[-1] != '.') | |
1995 | /* convert [foo][bar] to [bar] */ | |
1996 | while (o[-1] != '[' && o[-1] != '<') | |
1997 | o--; | |
1998 | else if (*p == '-' && *o != '.') | |
1999 | *--p = '.'; | |
2000 | } | |
994a7262 RS |
2001 | else if (p[0] == '-' && o[-1] == '.' |
2002 | && (p[1] == '.' || p[1] == ']' || p[1] == '>')) | |
4887597a EZ |
2003 | /* flush .foo.- ; leave - if stopped by '[' or '<' */ |
2004 | { | |
2005 | do | |
2006 | o--; | |
2007 | while (o[-1] != '.' && o[-1] != '[' && o[-1] != '<'); | |
2008 | if (p[1] == '.') /* foo.-.bar ==> bar. */ | |
2009 | p += 2; | |
2010 | else if (o[-1] == '.') /* '.foo.-]' ==> ']' */ | |
2011 | p++, o--; | |
2012 | /* else [foo.-] ==> [-] */ | |
2013 | } | |
2014 | else | |
2015 | { | |
2016 | #ifndef VMS4_4 | |
994a7262 RS |
2017 | if (*p == '-' |
2018 | && o[-1] != '[' && o[-1] != '<' && o[-1] != '.' | |
2019 | && p[1] != ']' && p[1] != '>' && p[1] != '.') | |
4887597a EZ |
2020 | *p = '_'; |
2021 | #endif /* VMS4_4 */ | |
2022 | *o++ = *p++; | |
2023 | } | |
2024 | #else /* not VMS */ | |
2025 | if (*p != '/') | |
2026 | { | |
2027 | *o++ = *p++; | |
2028 | } | |
2029 | else if (!strncmp (p, "//", 2) | |
4887597a EZ |
2030 | ) |
2031 | { | |
2032 | o = target; | |
2033 | p++; | |
2034 | } | |
994a7262 RS |
2035 | else if (p[0] == '/' && p[1] == '.' |
2036 | && (p[2] == '/' || p[2] == 0)) | |
4887597a EZ |
2037 | p += 2; |
2038 | else if (!strncmp (p, "/..", 3) | |
2039 | /* `/../' is the "superroot" on certain file systems. */ | |
2040 | && o != target | |
2041 | && (p[3] == '/' || p[3] == 0)) | |
2042 | { | |
2043 | while (o != target && *--o != '/') | |
2044 | ; | |
4887597a EZ |
2045 | if (o == target && *o == '/') |
2046 | ++o; | |
2047 | p += 3; | |
2048 | } | |
2049 | else | |
2050 | { | |
2051 | *o++ = *p++; | |
2052 | } | |
2053 | #endif /* not VMS */ | |
2054 | } | |
2055 | ||
2056 | return make_string (target, o - target); | |
2057 | } | |
2058 | #endif | |
570d7624 | 2059 | \f |
c70a4df6 SM |
2060 | /* If /~ or // appears, discard everything through first slash. */ |
2061 | static int | |
2062 | file_name_absolute_p (filename) | |
2063 | const unsigned char *filename; | |
2064 | { | |
2065 | return | |
2066 | (IS_DIRECTORY_SEP (*filename) || *filename == '~' | |
2067 | #ifdef VMS | |
2068 | /* ??? This criterion is probably wrong for '<'. */ | |
2069 | || index (filename, ':') || index (filename, '<') | |
2070 | || (*filename == '[' && (filename[1] != '-' | |
2071 | || (filename[2] != '.' && filename[2] != ']')) | |
2072 | && filename[1] != '.') | |
2073 | #endif /* VMS */ | |
2074 | #ifdef DOS_NT | |
2075 | || (IS_DRIVE (*filename) && IS_DEVICE_SEP (filename[1]) | |
2076 | && IS_DIRECTORY_SEP (filename[2])) | |
2077 | #endif | |
2078 | ); | |
2079 | } | |
2080 | ||
2081 | static unsigned char * | |
2082 | search_embedded_absfilename (nm, endp) | |
2083 | unsigned char *nm, *endp; | |
2084 | { | |
2085 | unsigned char *p, *s; | |
2086 | ||
2087 | for (p = nm + 1; p < endp; p++) | |
2088 | { | |
2089 | if ((0 | |
2090 | #ifdef VMS | |
2091 | || p[-1] == ':' || p[-1] == ']' || p[-1] == '>' | |
2092 | #endif /* VMS */ | |
2093 | || IS_DIRECTORY_SEP (p[-1])) | |
2094 | && file_name_absolute_p (p) | |
e39a993c | 2095 | #if defined (WINDOWSNT) || defined(CYGWIN) |
c70a4df6 SM |
2096 | /* // at start of file name is meaningful in Apollo, |
2097 | WindowsNT and Cygwin systems. */ | |
f34574c6 | 2098 | && !(IS_DIRECTORY_SEP (p[0]) && p - 1 == nm) |
e39a993c | 2099 | #endif /* not (WINDOWSNT || CYGWIN) */ |
c70a4df6 SM |
2100 | ) |
2101 | { | |
2102 | for (s = p; *s && (!IS_DIRECTORY_SEP (*s) | |
2103 | #ifdef VMS | |
2104 | && *s != ':' | |
2105 | #endif /* VMS */ | |
2106 | ); s++); | |
2107 | if (p[0] == '~' && s > p + 1) /* we've got "/~something/" */ | |
2108 | { | |
2109 | unsigned char *o = alloca (s - p + 1); | |
2110 | struct passwd *pw; | |
2111 | bcopy (p, o, s - p); | |
2112 | o [s - p] = 0; | |
2113 | ||
2114 | /* If we have ~user and `user' exists, discard | |
2115 | everything up to ~. But if `user' does not exist, leave | |
2116 | ~user alone, it might be a literal file name. */ | |
67c08d6c YM |
2117 | BLOCK_INPUT; |
2118 | pw = getpwnam (o + 1); | |
2119 | UNBLOCK_INPUT; | |
2120 | if (pw) | |
c70a4df6 | 2121 | return p; |
c70a4df6 SM |
2122 | } |
2123 | else | |
2124 | return p; | |
2125 | } | |
2126 | } | |
2127 | return NULL; | |
2128 | } | |
2129 | ||
570d7624 | 2130 | DEFUN ("substitute-in-file-name", Fsubstitute_in_file_name, |
8c1a1077 PJ |
2131 | Ssubstitute_in_file_name, 1, 1, 0, |
2132 | doc: /* Substitute environment variables referred to in FILENAME. | |
2133 | `$FOO' where FOO is an environment variable name means to substitute | |
2134 | the value of that variable. The variable name should be terminated | |
2135 | with a character not a letter, digit or underscore; otherwise, enclose | |
2136 | the entire variable name in braces. | |
2137 | If `/~' appears, all of FILENAME through that `/' is discarded. | |
2138 | ||
2139 | On VMS, `$' substitution is not done; this function does little and only | |
2140 | duplicates what `expand-file-name' does. */) | |
2141 | (filename) | |
3b7f6e60 | 2142 | Lisp_Object filename; |
570d7624 JB |
2143 | { |
2144 | unsigned char *nm; | |
2145 | ||
2146 | register unsigned char *s, *p, *o, *x, *endp; | |
6bbd7a29 | 2147 | unsigned char *target = NULL; |
570d7624 JB |
2148 | int total = 0; |
2149 | int substituted = 0; | |
2150 | unsigned char *xnm; | |
8ce069f5 | 2151 | Lisp_Object handler; |
570d7624 | 2152 | |
b7826503 | 2153 | CHECK_STRING (filename); |
570d7624 | 2154 | |
8ce069f5 RS |
2155 | /* If the file name has special constructs in it, |
2156 | call the corresponding file handler. */ | |
3b7f6e60 | 2157 | handler = Ffind_file_name_handler (filename, Qsubstitute_in_file_name); |
8ce069f5 | 2158 | if (!NILP (handler)) |
3b7f6e60 | 2159 | return call2 (handler, Qsubstitute_in_file_name, filename); |
8ce069f5 | 2160 | |
d5db4077 | 2161 | nm = SDATA (filename); |
199607e4 RS |
2162 | #ifdef DOS_NT |
2163 | nm = strcpy (alloca (strlen (nm) + 1), nm); | |
2164 | CORRECT_DIR_SEPS (nm); | |
d5db4077 | 2165 | substituted = (strcmp (nm, SDATA (filename)) != 0); |
a5a1cc06 | 2166 | #endif |
d5db4077 | 2167 | endp = nm + SBYTES (filename); |
570d7624 | 2168 | |
82330e7f | 2169 | /* If /~ or // appears, discard everything through first slash. */ |
c70a4df6 SM |
2170 | p = search_embedded_absfilename (nm, endp); |
2171 | if (p) | |
2172 | /* Start over with the new string, so we check the file-name-handler | |
2173 | again. Important with filenames like "/home/foo//:/hello///there" | |
2174 | which whould substitute to "/:/hello///there" rather than "/there". */ | |
2175 | return Fsubstitute_in_file_name | |
2176 | (make_specified_string (p, -1, endp - p, | |
2177 | STRING_MULTIBYTE (filename))); | |
570d7624 | 2178 | |
570d7624 | 2179 | #ifdef VMS |
c70a4df6 | 2180 | return filename; |
570d7624 JB |
2181 | #else |
2182 | ||
2183 | /* See if any variables are substituted into the string | |
2184 | and find the total length of their values in `total' */ | |
2185 | ||
2186 | for (p = nm; p != endp;) | |
2187 | if (*p != '$') | |
2188 | p++; | |
2189 | else | |
2190 | { | |
2191 | p++; | |
2192 | if (p == endp) | |
2193 | goto badsubst; | |
2194 | else if (*p == '$') | |
2195 | { | |
2196 | /* "$$" means a single "$" */ | |
2197 | p++; | |
2198 | total -= 1; | |
2199 | substituted = 1; | |
2200 | continue; | |
2201 | } | |
2202 | else if (*p == '{') | |
2203 | { | |
2204 | o = ++p; | |
2205 | while (p != endp && *p != '}') p++; | |
2206 | if (*p != '}') goto missingclose; | |
2207 | s = p; | |
2208 | } | |
2209 | else | |
2210 | { | |
2211 | o = p; | |
2212 | while (p != endp && (isalnum (*p) || *p == '_')) p++; | |
2213 | s = p; | |
2214 | } | |
2215 | ||
2216 | /* Copy out the variable name */ | |
2217 | target = (unsigned char *) alloca (s - o + 1); | |
2218 | strncpy (target, o, s - o); | |
2219 | target[s - o] = 0; | |
5e570b75 | 2220 | #ifdef DOS_NT |
4c3c22f3 | 2221 | strupr (target); /* $home == $HOME etc. */ |
5e570b75 | 2222 | #endif /* DOS_NT */ |
570d7624 JB |
2223 | |
2224 | /* Get variable value */ | |
2225 | o = (unsigned char *) egetenv (target); | |
8d2ced53 | 2226 | if (o) |
3efaadb7 SM |
2227 | { /* Eight-bit chars occupy upto 2 bytes in multibyte. */ |
2228 | total += strlen (o) * (STRING_MULTIBYTE (filename) ? 2 : 1); | |
8d2ced53 SM |
2229 | substituted = 1; |
2230 | } | |
2231 | else if (*p == '}') | |
2232 | goto badvar; | |
570d7624 JB |
2233 | } |
2234 | ||
2235 | if (!substituted) | |
3b7f6e60 | 2236 | return filename; |
570d7624 JB |
2237 | |
2238 | /* If substitution required, recopy the string and do it */ | |
2239 | /* Make space in stack frame for the new copy */ | |
d5db4077 | 2240 | xnm = (unsigned char *) alloca (SBYTES (filename) + total + 1); |
570d7624 JB |
2241 | x = xnm; |
2242 | ||
2243 | /* Copy the rest of the name through, replacing $ constructs with values */ | |
2244 | for (p = nm; *p;) | |
2245 | if (*p != '$') | |
2246 | *x++ = *p++; | |
2247 | else | |
2248 | { | |
2249 | p++; | |
2250 | if (p == endp) | |
2251 | goto badsubst; | |
2252 | else if (*p == '$') | |
2253 | { | |
2254 | *x++ = *p++; | |
2255 | continue; | |
2256 | } | |
2257 | else if (*p == '{') | |
2258 | { | |
2259 | o = ++p; | |
2260 | while (p != endp && *p != '}') p++; | |
2261 | if (*p != '}') goto missingclose; | |
2262 | s = p++; | |
2263 | } | |
2264 | else | |
2265 | { | |
2266 | o = p; | |
2267 | while (p != endp && (isalnum (*p) || *p == '_')) p++; | |
2268 | s = p; | |
2269 | } | |
2270 | ||
2271 | /* Copy out the variable name */ | |
2272 | target = (unsigned char *) alloca (s - o + 1); | |
2273 | strncpy (target, o, s - o); | |
2274 | target[s - o] = 0; | |
5e570b75 | 2275 | #ifdef DOS_NT |
4c3c22f3 | 2276 | strupr (target); /* $home == $HOME etc. */ |
5e570b75 | 2277 | #endif /* DOS_NT */ |
570d7624 JB |
2278 | |
2279 | /* Get variable value */ | |
2280 | o = (unsigned char *) egetenv (target); | |
570d7624 | 2281 | if (!o) |
8d2ced53 SM |
2282 | { |
2283 | *x++ = '$'; | |
2284 | strcpy (x, target); x+= strlen (target); | |
2285 | } | |
2286 | else if (STRING_MULTIBYTE (filename)) | |
60d67b83 RS |
2287 | { |
2288 | /* If the original string is multibyte, | |
2289 | convert what we substitute into multibyte. */ | |
60d67b83 RS |
2290 | while (*o) |
2291 | { | |
dc5142f6 KH |
2292 | int c = *o++; |
2293 | c = unibyte_char_to_multibyte (c); | |
ce51c54c | 2294 | x += CHAR_STRING (c, x); |
60d67b83 RS |
2295 | } |
2296 | } | |
2297 | else | |
2298 | { | |
2299 | strcpy (x, o); | |
2300 | x += strlen (o); | |
2301 | } | |
570d7624 JB |
2302 | } |
2303 | ||
2304 | *x = 0; | |
2305 | ||
82330e7f | 2306 | /* If /~ or // appears, discard everything through first slash. */ |
c70a4df6 SM |
2307 | while ((p = search_embedded_absfilename (xnm, x))) |
2308 | /* This time we do not start over because we've already expanded envvars | |
2309 | and replaced $$ with $. Maybe we should start over as well, but we'd | |
2310 | need to quote some $ to $$ first. */ | |
2311 | xnm = p; | |
570d7624 | 2312 | |
d7231f93 | 2313 | return make_specified_string (xnm, -1, x - xnm, STRING_MULTIBYTE (filename)); |
570d7624 JB |
2314 | |
2315 | badsubst: | |
2316 | error ("Bad format environment-variable substitution"); | |
2317 | missingclose: | |
2318 | error ("Missing \"}\" in environment-variable substitution"); | |
2319 | badvar: | |
2320 | error ("Substituting nonexistent environment variable \"%s\"", target); | |
2321 | ||
2322 | /* NOTREACHED */ | |
2323 | #endif /* not VMS */ | |
6bbd7a29 | 2324 | return Qnil; |
570d7624 JB |
2325 | } |
2326 | \f | |
067ffa38 | 2327 | /* A slightly faster and more convenient way to get |
298b760e | 2328 | (directory-file-name (expand-file-name FOO)). */ |
067ffa38 | 2329 | |
570d7624 JB |
2330 | Lisp_Object |
2331 | expand_and_dir_to_file (filename, defdir) | |
2332 | Lisp_Object filename, defdir; | |
2333 | { | |
199607e4 | 2334 | register Lisp_Object absname; |
570d7624 | 2335 | |
199607e4 | 2336 | absname = Fexpand_file_name (filename, defdir); |
570d7624 JB |
2337 | #ifdef VMS |
2338 | { | |
d5db4077 | 2339 | register int c = SREF (absname, SBYTES (absname) - 1); |
570d7624 | 2340 | if (c == ':' || c == ']' || c == '>') |
199607e4 | 2341 | absname = Fdirectory_file_name (absname); |
570d7624 JB |
2342 | } |
2343 | #else | |
199607e4 | 2344 | /* Remove final slash, if any (unless this is the root dir). |
570d7624 | 2345 | stat behaves differently depending! */ |
d5db4077 KR |
2346 | if (SCHARS (absname) > 1 |
2347 | && IS_DIRECTORY_SEP (SREF (absname, SBYTES (absname) - 1)) | |
2348 | && !IS_DEVICE_SEP (SREF (absname, SBYTES (absname)-2))) | |
ddc61f46 | 2349 | /* We cannot take shortcuts; they might be wrong for magic file names. */ |
199607e4 | 2350 | absname = Fdirectory_file_name (absname); |
570d7624 | 2351 | #endif |
199607e4 | 2352 | return absname; |
570d7624 JB |
2353 | } |
2354 | \f | |
3ed15d97 RS |
2355 | /* Signal an error if the file ABSNAME already exists. |
2356 | If INTERACTIVE is nonzero, ask the user whether to proceed, | |
2357 | and bypass the error if the user says to go ahead. | |
2358 | QUERYSTRING is a name for the action that is being considered | |
2359 | to alter the file. | |
de1d0127 | 2360 | |
3ed15d97 | 2361 | *STATPTR is used to store the stat information if the file exists. |
de1d0127 | 2362 | If the file does not exist, STATPTR->st_mode is set to 0. |
b8b29dc9 RS |
2363 | If STATPTR is null, we don't store into it. |
2364 | ||
2365 | If QUICK is nonzero, we ask for y or n, not yes or no. */ | |
3ed15d97 | 2366 | |
c4df73f9 | 2367 | void |
b8b29dc9 | 2368 | barf_or_query_if_file_exists (absname, querystring, interactive, statptr, quick) |
570d7624 JB |
2369 | Lisp_Object absname; |
2370 | unsigned char *querystring; | |
2371 | int interactive; | |
3ed15d97 | 2372 | struct stat *statptr; |
b8b29dc9 | 2373 | int quick; |
570d7624 | 2374 | { |
643c73b9 | 2375 | register Lisp_Object tem, encoded_filename; |
4018b5ef | 2376 | struct stat statbuf; |
570d7624 JB |
2377 | struct gcpro gcpro1; |
2378 | ||
643c73b9 RS |
2379 | encoded_filename = ENCODE_FILE (absname); |
2380 | ||
4018b5ef RS |
2381 | /* stat is a good way to tell whether the file exists, |
2382 | regardless of what access permissions it has. */ | |
f72b5416 | 2383 | if (lstat (SDATA (encoded_filename), &statbuf) >= 0) |
570d7624 JB |
2384 | { |
2385 | if (! interactive) | |
24b1ddad KS |
2386 | xsignal2 (Qfile_already_exists, |
2387 | build_string ("File already exists"), absname); | |
570d7624 | 2388 | GCPRO1 (absname); |
67e8e2b8 RS |
2389 | tem = format2 ("File %s already exists; %s anyway? ", |
2390 | absname, build_string (querystring)); | |
b8b29dc9 RS |
2391 | if (quick) |
2392 | tem = Fy_or_n_p (tem); | |
2393 | else | |
2394 | tem = do_yes_or_no_p (tem); | |
570d7624 | 2395 | UNGCPRO; |
265a9e55 | 2396 | if (NILP (tem)) |
24b1ddad KS |
2397 | xsignal2 (Qfile_already_exists, |
2398 | build_string ("File already exists"), absname); | |
3ed15d97 RS |
2399 | if (statptr) |
2400 | *statptr = statbuf; | |
2401 | } | |
2402 | else | |
2403 | { | |
2404 | if (statptr) | |
2405 | statptr->st_mode = 0; | |
570d7624 JB |
2406 | } |
2407 | return; | |
2408 | } | |
2409 | ||
795c20df | 2410 | DEFUN ("copy-file", Fcopy_file, Scopy_file, 2, 5, |
7c0f6118 | 2411 | "fCopy file: \nGCopy %s to file: \np\nP", |
8c1a1077 PJ |
2412 | doc: /* Copy FILE to NEWNAME. Both args must be strings. |
2413 | If NEWNAME names a directory, copy FILE there. | |
795c20df CY |
2414 | |
2415 | This function always sets the file modes of the output file to match | |
2416 | the input file. | |
2417 | ||
2418 | The optional third argument OK-IF-ALREADY-EXISTS specifies what to do | |
2419 | if file NEWNAME already exists. If OK-IF-ALREADY-EXISTS is nil, we | |
2420 | signal a `file-already-exists' error without overwriting. If | |
2421 | OK-IF-ALREADY-EXISTS is a number, we request confirmation from the user | |
2422 | about overwriting; this is what happens in interactive use with M-x. | |
2423 | Any other value for OK-IF-ALREADY-EXISTS means to overwrite the | |
2424 | existing file. | |
c50f15d0 | 2425 | |
7f08b80e | 2426 | Fourth arg KEEP-TIME non-nil means give the output file the same |
8c1a1077 | 2427 | last-modified time as the old one. (This works on only some systems.) |
c50f15d0 | 2428 | |
7fce7dfe EZ |
2429 | A prefix arg makes KEEP-TIME non-nil. |
2430 | ||
586702ce RS |
2431 | If PRESERVE-UID-GID is non-nil, we try to transfer the |
2432 | uid and gid of FILE to NEWNAME. */) | |
795c20df CY |
2433 | (file, newname, ok_if_already_exists, keep_time, preserve_uid_gid) |
2434 | Lisp_Object file, newname, ok_if_already_exists, keep_time; | |
586702ce | 2435 | Lisp_Object preserve_uid_gid; |
570d7624 JB |
2436 | { |
2437 | int ifd, ofd, n; | |
2438 | char buf[16 * 1024]; | |
3ed15d97 | 2439 | struct stat st, out_st; |
32f4334d | 2440 | Lisp_Object handler; |
b1d1b865 | 2441 | struct gcpro gcpro1, gcpro2, gcpro3, gcpro4; |
aed13378 | 2442 | int count = SPECPDL_INDEX (); |
f73b0ada | 2443 | int input_file_statable_p; |
b1d1b865 | 2444 | Lisp_Object encoded_file, encoded_newname; |
570d7624 | 2445 | |
b1d1b865 RS |
2446 | encoded_file = encoded_newname = Qnil; |
2447 | GCPRO4 (file, newname, encoded_file, encoded_newname); | |
b7826503 PJ |
2448 | CHECK_STRING (file); |
2449 | CHECK_STRING (newname); | |
b1d1b865 | 2450 | |
a9d14e54 | 2451 | if (!NILP (Ffile_directory_p (newname))) |
6b61353c | 2452 | newname = Fexpand_file_name (Ffile_name_nondirectory (file), newname); |
a9d14e54 GM |
2453 | else |
2454 | newname = Fexpand_file_name (newname, Qnil); | |
2455 | ||
3b7f6e60 | 2456 | file = Fexpand_file_name (file, Qnil); |
32f4334d | 2457 | |
0bf2eed2 | 2458 | /* If the input file name has special constructs in it, |
32f4334d | 2459 | call the corresponding file handler. */ |
3b7f6e60 | 2460 | handler = Ffind_file_name_handler (file, Qcopy_file); |
0bf2eed2 | 2461 | /* Likewise for output file name. */ |
51cf6d37 | 2462 | if (NILP (handler)) |
49307295 | 2463 | handler = Ffind_file_name_handler (newname, Qcopy_file); |
32f4334d | 2464 | if (!NILP (handler)) |
1f163f28 MA |
2465 | RETURN_UNGCPRO (call6 (handler, Qcopy_file, file, newname, |
2466 | ok_if_already_exists, keep_time, preserve_uid_gid)); | |
32f4334d | 2467 | |
b1d1b865 RS |
2468 | encoded_file = ENCODE_FILE (file); |
2469 | encoded_newname = ENCODE_FILE (newname); | |
2470 | ||
265a9e55 | 2471 | if (NILP (ok_if_already_exists) |
93c30b5f | 2472 | || INTEGERP (ok_if_already_exists)) |
2f868094 | 2473 | barf_or_query_if_file_exists (newname, "copy to it", |
b8b29dc9 | 2474 | INTEGERP (ok_if_already_exists), &out_st, 0); |
d5db4077 | 2475 | else if (stat (SDATA (encoded_newname), &out_st) < 0) |
3ed15d97 | 2476 | out_st.st_mode = 0; |
570d7624 | 2477 | |
e8691c59 | 2478 | #ifdef WINDOWSNT |
d5db4077 | 2479 | if (!CopyFile (SDATA (encoded_file), |
efdc16c9 | 2480 | SDATA (encoded_newname), |
e8691c59 GM |
2481 | FALSE)) |
2482 | report_file_error ("Copying file", Fcons (file, Fcons (newname, Qnil))); | |
8b53dc06 JR |
2483 | /* CopyFile retains the timestamp by default. */ |
2484 | else if (NILP (keep_time)) | |
e8691c59 GM |
2485 | { |
2486 | EMACS_TIME now; | |
ad497129 JR |
2487 | DWORD attributes; |
2488 | char * filename; | |
2489 | ||
e8691c59 | 2490 | EMACS_GET_TIME (now); |
d5db4077 | 2491 | filename = SDATA (encoded_newname); |
ad497129 JR |
2492 | |
2493 | /* Ensure file is writable while its modified time is set. */ | |
2494 | attributes = GetFileAttributes (filename); | |
02cca86b | 2495 | SetFileAttributes (filename, attributes & ~FILE_ATTRIBUTE_READONLY); |
ad497129 JR |
2496 | if (set_file_times (filename, now, now)) |
2497 | { | |
2498 | /* Restore original attributes. */ | |
2499 | SetFileAttributes (filename, attributes); | |
24b1ddad KS |
2500 | xsignal2 (Qfile_date_error, |
2501 | build_string ("Cannot set file date"), newname); | |
ad497129 JR |
2502 | } |
2503 | /* Restore original attributes. */ | |
2504 | SetFileAttributes (filename, attributes); | |
e8691c59 GM |
2505 | } |
2506 | #else /* not WINDOWSNT */ | |
13336908 | 2507 | immediate_quit = 1; |
d5db4077 | 2508 | ifd = emacs_open (SDATA (encoded_file), O_RDONLY, 0); |
13336908 RS |
2509 | immediate_quit = 0; |
2510 | ||
570d7624 | 2511 | if (ifd < 0) |
3b7f6e60 | 2512 | report_file_error ("Opening input file", Fcons (file, Qnil)); |
570d7624 | 2513 | |
b5148e85 RS |
2514 | record_unwind_protect (close_file_unwind, make_number (ifd)); |
2515 | ||
f73b0ada BF |
2516 | /* We can only copy regular files and symbolic links. Other files are not |
2517 | copyable by us. */ | |
2518 | input_file_statable_p = (fstat (ifd, &st) >= 0); | |
2519 | ||
b016179b | 2520 | #if !defined (MSDOS) || __DJGPP__ > 1 |
3ed15d97 RS |
2521 | if (out_st.st_mode != 0 |
2522 | && st.st_dev == out_st.st_dev && st.st_ino == out_st.st_ino) | |
2523 | { | |
2524 | errno = 0; | |
2525 | report_file_error ("Input and output files are the same", | |
3b7f6e60 | 2526 | Fcons (file, Fcons (newname, Qnil))); |
3ed15d97 RS |
2527 | } |
2528 | #endif | |
2529 | ||
f73b0ada BF |
2530 | #if defined (S_ISREG) && defined (S_ISLNK) |
2531 | if (input_file_statable_p) | |
2532 | { | |
2533 | if (!(S_ISREG (st.st_mode)) && !(S_ISLNK (st.st_mode))) | |
2534 | { | |
2535 | #if defined (EISDIR) | |
2536 | /* Get a better looking error message. */ | |
2537 | errno = EISDIR; | |
2538 | #endif /* EISDIR */ | |
3b7f6e60 | 2539 | report_file_error ("Non-regular file", Fcons (file, Qnil)); |
f73b0ada BF |
2540 | } |
2541 | } | |
2542 | #endif /* S_ISREG && S_ISLNK */ | |
2543 | ||
570d7624 JB |
2544 | #ifdef VMS |
2545 | /* Create the copy file with the same record format as the input file */ | |
d5db4077 | 2546 | ofd = sys_creat (SDATA (encoded_newname), 0666, ifd); |
570d7624 | 2547 | #else |
4c3c22f3 RS |
2548 | #ifdef MSDOS |
2549 | /* System's default file type was set to binary by _fmode in emacs.c. */ | |
c50f15d0 | 2550 | ofd = emacs_open (SDATA (encoded_newname), |
7fce7dfe | 2551 | O_WRONLY | O_TRUNC | O_CREAT |
795c20df | 2552 | | (NILP (ok_if_already_exists) ? O_EXCL : 0), |
c50f15d0 RS |
2553 | S_IREAD | S_IWRITE); |
2554 | #else /* not MSDOS */ | |
2555 | ofd = emacs_open (SDATA (encoded_newname), | |
2556 | O_WRONLY | O_TRUNC | O_CREAT | |
795c20df | 2557 | | (NILP (ok_if_already_exists) ? O_EXCL : 0), |
c50f15d0 | 2558 | 0666); |
4c3c22f3 | 2559 | #endif /* not MSDOS */ |
570d7624 JB |
2560 | #endif /* VMS */ |
2561 | if (ofd < 0) | |
3ed15d97 | 2562 | report_file_error ("Opening output file", Fcons (newname, Qnil)); |
b5148e85 RS |
2563 | |
2564 | record_unwind_protect (close_file_unwind, make_number (ofd)); | |
570d7624 | 2565 | |
b5148e85 RS |
2566 | immediate_quit = 1; |
2567 | QUIT; | |
68c45bf0 PE |
2568 | while ((n = emacs_read (ifd, buf, sizeof buf)) > 0) |
2569 | if (emacs_write (ofd, buf, n) != n) | |
3ed15d97 | 2570 | report_file_error ("I/O error", Fcons (newname, Qnil)); |
b5148e85 | 2571 | immediate_quit = 0; |
570d7624 | 2572 | |
b016179b EZ |
2573 | #ifndef MSDOS |
2574 | /* Preserve the original file modes, and if requested, also its | |
2575 | owner and group. */ | |
586702ce RS |
2576 | if (input_file_statable_p) |
2577 | { | |
b016179b EZ |
2578 | if (! NILP (preserve_uid_gid)) |
2579 | fchown (ofd, st.st_uid, st.st_gid); | |
586702ce | 2580 | fchmod (ofd, st.st_mode & 07777); |
586702ce | 2581 | } |
b016179b | 2582 | #endif /* not MSDOS */ |
586702ce | 2583 | |
5acac34e | 2584 | /* Closing the output clobbers the file times on some systems. */ |
68c45bf0 | 2585 | if (emacs_close (ofd) < 0) |
5acac34e RS |
2586 | report_file_error ("I/O error", Fcons (newname, Qnil)); |
2587 | ||
f73b0ada | 2588 | if (input_file_statable_p) |
570d7624 | 2589 | { |
8ca6602c | 2590 | if (!NILP (keep_time)) |
570d7624 | 2591 | { |
de5bf5d3 JB |
2592 | EMACS_TIME atime, mtime; |
2593 | EMACS_SET_SECS_USECS (atime, st.st_atime, 0); | |
2594 | EMACS_SET_SECS_USECS (mtime, st.st_mtime, 0); | |
d5db4077 | 2595 | if (set_file_times (SDATA (encoded_newname), |
b1d1b865 | 2596 | atime, mtime)) |
24b1ddad KS |
2597 | xsignal2 (Qfile_date_error, |
2598 | build_string ("Cannot set file date"), newname); | |
570d7624 | 2599 | } |
570d7624 JB |
2600 | } |
2601 | ||
68c45bf0 | 2602 | emacs_close (ifd); |
b016179b EZ |
2603 | |
2604 | #if defined (__DJGPP__) && __DJGPP__ > 1 | |
2605 | if (input_file_statable_p) | |
2606 | { | |
2607 | /* In DJGPP v2.0 and later, fstat usually returns true file mode bits, | |
2608 | and if it can't, it tells so. Otherwise, under MSDOS we usually | |
2609 | get only the READ bit, which will make the copied file read-only, | |
2610 | so it's better not to chmod at all. */ | |
2611 | if ((_djstat_flags & _STFAIL_WRITEBIT) == 0) | |
2612 | chmod (SDATA (encoded_newname), st.st_mode & 07777); | |
2613 | } | |
2614 | #endif /* DJGPP version 2 or newer */ | |
2615 | #endif /* not WINDOWSNT */ | |
5acac34e | 2616 | |
b5148e85 RS |
2617 | /* Discard the unwind protects. */ |
2618 | specpdl_ptr = specpdl + count; | |
2619 | ||
570d7624 JB |
2620 | UNGCPRO; |
2621 | return Qnil; | |
2622 | } | |
385b6cc7 | 2623 | \f |
9bbe01fb | 2624 | DEFUN ("make-directory-internal", Fmake_directory_internal, |
353cfc19 | 2625 | Smake_directory_internal, 1, 1, 0, |
8c1a1077 PJ |
2626 | doc: /* Create a new directory named DIRECTORY. */) |
2627 | (directory) | |
3b7f6e60 | 2628 | Lisp_Object directory; |
570d7624 | 2629 | { |
19290c65 | 2630 | const unsigned char *dir; |
32f4334d | 2631 | Lisp_Object handler; |
b1d1b865 | 2632 | Lisp_Object encoded_dir; |
570d7624 | 2633 | |
b7826503 | 2634 | CHECK_STRING (directory); |
3b7f6e60 | 2635 | directory = Fexpand_file_name (directory, Qnil); |
32f4334d | 2636 | |
3b7f6e60 | 2637 | handler = Ffind_file_name_handler (directory, Qmake_directory_internal); |
32f4334d | 2638 | if (!NILP (handler)) |
3b7f6e60 | 2639 | return call2 (handler, Qmake_directory_internal, directory); |
9bbe01fb | 2640 | |
b1d1b865 RS |
2641 | encoded_dir = ENCODE_FILE (directory); |
2642 | ||
d5db4077 | 2643 | dir = SDATA (encoded_dir); |
570d7624 | 2644 | |
5e570b75 RS |
2645 | #ifdef WINDOWSNT |
2646 | if (mkdir (dir) != 0) | |
2647 | #else | |
570d7624 | 2648 | if (mkdir (dir, 0777) != 0) |
5e570b75 | 2649 | #endif |
a9f2aeae | 2650 | report_file_error ("Creating directory", list1 (directory)); |
570d7624 | 2651 | |
32f4334d | 2652 | return Qnil; |
570d7624 JB |
2653 | } |
2654 | ||
aa734e17 | 2655 | DEFUN ("delete-directory", Fdelete_directory, Sdelete_directory, 1, 1, "FDelete directory: ", |
efdc16c9 | 2656 | doc: /* Delete the directory named DIRECTORY. Does not follow symlinks. */) |
8c1a1077 | 2657 | (directory) |
3b7f6e60 | 2658 | Lisp_Object directory; |
570d7624 | 2659 | { |
19290c65 | 2660 | const unsigned char *dir; |
32f4334d | 2661 | Lisp_Object handler; |
b1d1b865 | 2662 | Lisp_Object encoded_dir; |
570d7624 | 2663 | |
b7826503 | 2664 | CHECK_STRING (directory); |
3b7f6e60 | 2665 | directory = Fdirectory_file_name (Fexpand_file_name (directory, Qnil)); |
570d7624 | 2666 | |
3b7f6e60 | 2667 | handler = Ffind_file_name_handler (directory, Qdelete_directory); |
32f4334d | 2668 | if (!NILP (handler)) |
3b7f6e60 | 2669 | return call2 (handler, Qdelete_directory, directory); |
32f4334d | 2670 | |
b1d1b865 RS |
2671 | encoded_dir = ENCODE_FILE (directory); |
2672 | ||
d5db4077 | 2673 | dir = SDATA (encoded_dir); |
b1d1b865 | 2674 | |
570d7624 | 2675 | if (rmdir (dir) != 0) |
a9f2aeae | 2676 | report_file_error ("Removing directory", list1 (directory)); |
570d7624 JB |
2677 | |
2678 | return Qnil; | |
2679 | } | |
2680 | ||
2681 | DEFUN ("delete-file", Fdelete_file, Sdelete_file, 1, 1, "fDelete file: ", | |
efdc16c9 | 2682 | doc: /* Delete file named FILENAME. If it is a symlink, remove the symlink. |
8c1a1077 PJ |
2683 | If file has multiple names, it continues to exist with the other names. */) |
2684 | (filename) | |
570d7624 JB |
2685 | Lisp_Object filename; |
2686 | { | |
32f4334d | 2687 | Lisp_Object handler; |
b1d1b865 | 2688 | Lisp_Object encoded_file; |
efdc16c9 | 2689 | struct gcpro gcpro1; |
b1d1b865 | 2690 | |
efdc16c9 | 2691 | GCPRO1 (filename); |
b4bd27c5 RS |
2692 | if (!NILP (Ffile_directory_p (filename)) |
2693 | && NILP (Ffile_symlink_p (filename))) | |
24b1ddad KS |
2694 | xsignal2 (Qfile_error, |
2695 | build_string ("Removing old name: is a directory"), | |
2696 | filename); | |
efdc16c9 | 2697 | UNGCPRO; |
570d7624 | 2698 | filename = Fexpand_file_name (filename, Qnil); |
32f4334d | 2699 | |
49307295 | 2700 | handler = Ffind_file_name_handler (filename, Qdelete_file); |
32f4334d | 2701 | if (!NILP (handler)) |
8a9b0da9 | 2702 | return call2 (handler, Qdelete_file, filename); |
32f4334d | 2703 | |
b1d1b865 RS |
2704 | encoded_file = ENCODE_FILE (filename); |
2705 | ||
d5db4077 | 2706 | if (0 > unlink (SDATA (encoded_file))) |
a9f2aeae | 2707 | report_file_error ("Removing old name", list1 (filename)); |
8a9b0da9 | 2708 | return Qnil; |
570d7624 JB |
2709 | } |
2710 | ||
385b6cc7 RS |
2711 | static Lisp_Object |
2712 | internal_delete_file_1 (ignore) | |
2713 | Lisp_Object ignore; | |
2714 | { | |
2715 | return Qt; | |
2716 | } | |
2717 | ||
2718 | /* Delete file FILENAME, returning 1 if successful and 0 if failed. */ | |
2719 | ||
2720 | int | |
2721 | internal_delete_file (filename) | |
2722 | Lisp_Object filename; | |
2723 | { | |
a3911e8c KR |
2724 | Lisp_Object tem; |
2725 | tem = internal_condition_case_1 (Fdelete_file, filename, | |
2726 | Qt, internal_delete_file_1); | |
2727 | return NILP (tem); | |
385b6cc7 RS |
2728 | } |
2729 | \f | |
570d7624 | 2730 | DEFUN ("rename-file", Frename_file, Srename_file, 2, 3, |
7c0f6118 | 2731 | "fRename file: \nGRename %s to file: \np", |
a4e03fe5 | 2732 | doc: /* Rename FILE as NEWNAME. Both args must be strings. |
8c1a1077 PJ |
2733 | If file has names other than FILE, it continues to have those names. |
2734 | Signals a `file-already-exists' error if a file NEWNAME already exists | |
2735 | unless optional third argument OK-IF-ALREADY-EXISTS is non-nil. | |
2736 | A number as third arg means request confirmation if NEWNAME already exists. | |
2737 | This is what happens in interactive use with M-x. */) | |
2738 | (file, newname, ok_if_already_exists) | |
3b7f6e60 | 2739 | Lisp_Object file, newname, ok_if_already_exists; |
570d7624 | 2740 | { |
32f4334d | 2741 | Lisp_Object handler; |
f72b5416 JD |
2742 | struct gcpro gcpro1, gcpro2, gcpro3, gcpro4, gcpro5; |
2743 | Lisp_Object encoded_file, encoded_newname, symlink_target; | |
570d7624 | 2744 | |
f72b5416 JD |
2745 | symlink_target = encoded_file = encoded_newname = Qnil; |
2746 | GCPRO5 (file, newname, encoded_file, encoded_newname, symlink_target); | |
b7826503 PJ |
2747 | CHECK_STRING (file); |
2748 | CHECK_STRING (newname); | |
3b7f6e60 | 2749 | file = Fexpand_file_name (file, Qnil); |
1ffc5c90 | 2750 | |
f83caf70 EZ |
2751 | if ((!NILP (Ffile_directory_p (newname))) |
2752 | #ifdef DOS_NT | |
2753 | /* If the file names are identical but for the case, | |
2754 | don't attempt to move directory to itself. */ | |
2755 | && (NILP (Fstring_equal (Fdowncase (file), Fdowncase (newname)))) | |
2756 | #endif | |
2757 | ) | |
1ffc5c90 RS |
2758 | newname = Fexpand_file_name (Ffile_name_nondirectory (file), newname); |
2759 | else | |
2760 | newname = Fexpand_file_name (newname, Qnil); | |
32f4334d RS |
2761 | |
2762 | /* If the file name has special constructs in it, | |
2763 | call the corresponding file handler. */ | |
3b7f6e60 | 2764 | handler = Ffind_file_name_handler (file, Qrename_file); |
51cf6d37 | 2765 | if (NILP (handler)) |
49307295 | 2766 | handler = Ffind_file_name_handler (newname, Qrename_file); |
32f4334d | 2767 | if (!NILP (handler)) |
36712b0a | 2768 | RETURN_UNGCPRO (call4 (handler, Qrename_file, |
3b7f6e60 | 2769 | file, newname, ok_if_already_exists)); |
32f4334d | 2770 | |
b1d1b865 RS |
2771 | encoded_file = ENCODE_FILE (file); |
2772 | encoded_newname = ENCODE_FILE (newname); | |
2773 | ||
bc77278f EZ |
2774 | #ifdef DOS_NT |
2775 | /* If the file names are identical but for the case, don't ask for | |
2776 | confirmation: they simply want to change the letter-case of the | |
2777 | file name. */ | |
2778 | if (NILP (Fstring_equal (Fdowncase (file), Fdowncase (newname)))) | |
2779 | #endif | |
265a9e55 | 2780 | if (NILP (ok_if_already_exists) |
93c30b5f | 2781 | || INTEGERP (ok_if_already_exists)) |
2f868094 | 2782 | barf_or_query_if_file_exists (newname, "rename to it", |
b8b29dc9 | 2783 | INTEGERP (ok_if_already_exists), 0, 0); |
570d7624 | 2784 | #ifndef BSD4_1 |
d5db4077 | 2785 | if (0 > rename (SDATA (encoded_file), SDATA (encoded_newname))) |
570d7624 | 2786 | #else |
d5db4077 KR |
2787 | if (0 > link (SDATA (encoded_file), SDATA (encoded_newname)) |
2788 | || 0 > unlink (SDATA (encoded_file))) | |
570d7624 JB |
2789 | #endif |
2790 | { | |
2791 | if (errno == EXDEV) | |
2792 | { | |
440c7d00 | 2793 | #ifdef S_IFLNK |
f72b5416 | 2794 | symlink_target = Ffile_symlink_p (file); |
440c7d00 JD |
2795 | if (! NILP (symlink_target)) |
2796 | Fmake_symbolic_link (symlink_target, newname, | |
f59abab9 | 2797 | NILP (ok_if_already_exists) ? Qnil : Qt); |
440c7d00 JD |
2798 | else |
2799 | #endif | |
586702ce RS |
2800 | Fcopy_file (file, newname, |
2801 | /* We have already prompted if it was an integer, | |
2802 | so don't have copy-file prompt again. */ | |
2803 | NILP (ok_if_already_exists) ? Qnil : Qt, | |
795c20df | 2804 | Qt, Qt); |
d550c425 | 2805 | |
3b7f6e60 | 2806 | Fdelete_file (file); |
570d7624 JB |
2807 | } |
2808 | else | |
a9f2aeae | 2809 | report_file_error ("Renaming", list2 (file, newname)); |
570d7624 JB |
2810 | } |
2811 | UNGCPRO; | |
2812 | return Qnil; | |
2813 | } | |
2814 | ||
2815 | DEFUN ("add-name-to-file", Fadd_name_to_file, Sadd_name_to_file, 2, 3, | |
7c0f6118 | 2816 | "fAdd name to file: \nGName to add to %s: \np", |
a4e03fe5 | 2817 | doc: /* Give FILE additional name NEWNAME. Both args must be strings. |
8c1a1077 PJ |
2818 | Signals a `file-already-exists' error if a file NEWNAME already exists |
2819 | unless optional third argument OK-IF-ALREADY-EXISTS is non-nil. | |
2820 | A number as third arg means request confirmation if NEWNAME already exists. | |
2821 | This is what happens in interactive use with M-x. */) | |
2822 | (file, newname, ok_if_already_exists) | |
3b7f6e60 | 2823 | Lisp_Object file, newname, ok_if_already_exists; |
570d7624 | 2824 | { |
32f4334d | 2825 | Lisp_Object handler; |
b1d1b865 RS |
2826 | Lisp_Object encoded_file, encoded_newname; |
2827 | struct gcpro gcpro1, gcpro2, gcpro3, gcpro4; | |
570d7624 | 2828 | |
b1d1b865 RS |
2829 | GCPRO4 (file, newname, encoded_file, encoded_newname); |
2830 | encoded_file = encoded_newname = Qnil; | |
b7826503 PJ |
2831 | CHECK_STRING (file); |
2832 | CHECK_STRING (newname); | |
3b7f6e60 | 2833 | file = Fexpand_file_name (file, Qnil); |
1ffc5c90 RS |
2834 | |
2835 | if (!NILP (Ffile_directory_p (newname))) | |
2836 | newname = Fexpand_file_name (Ffile_name_nondirectory (file), newname); | |
2837 | else | |
2838 | newname = Fexpand_file_name (newname, Qnil); | |
32f4334d RS |
2839 | |
2840 | /* If the file name has special constructs in it, | |
2841 | call the corresponding file handler. */ | |
3b7f6e60 | 2842 | handler = Ffind_file_name_handler (file, Qadd_name_to_file); |
32f4334d | 2843 | if (!NILP (handler)) |
3b7f6e60 | 2844 | RETURN_UNGCPRO (call4 (handler, Qadd_name_to_file, file, |
36712b0a | 2845 | newname, ok_if_already_exists)); |
32f4334d | 2846 | |
adc6741c RS |
2847 | /* If the new name has special constructs in it, |
2848 | call the corresponding file handler. */ | |
2849 | handler = Ffind_file_name_handler (newname, Qadd_name_to_file); | |
2850 | if (!NILP (handler)) | |
3b7f6e60 | 2851 | RETURN_UNGCPRO (call4 (handler, Qadd_name_to_file, file, |
adc6741c RS |
2852 | newname, ok_if_already_exists)); |
2853 | ||
b1d1b865 RS |
2854 | encoded_file = ENCODE_FILE (file); |
2855 | encoded_newname = ENCODE_FILE (newname); | |
2856 | ||
265a9e55 | 2857 | if (NILP (ok_if_already_exists) |
93c30b5f | 2858 | || INTEGERP (ok_if_already_exists)) |
2f868094 | 2859 | barf_or_query_if_file_exists (newname, "make it a new name", |
b8b29dc9 | 2860 | INTEGERP (ok_if_already_exists), 0, 0); |
5e570b75 | 2861 | |
d5db4077 KR |
2862 | unlink (SDATA (newname)); |
2863 | if (0 > link (SDATA (encoded_file), SDATA (encoded_newname))) | |
a9f2aeae | 2864 | report_file_error ("Adding new name", list2 (file, newname)); |
570d7624 JB |
2865 | |
2866 | UNGCPRO; | |
2867 | return Qnil; | |
2868 | } | |
2869 | ||
2870 | #ifdef S_IFLNK | |
2871 | DEFUN ("make-symbolic-link", Fmake_symbolic_link, Smake_symbolic_link, 2, 3, | |
7c0f6118 | 2872 | "FMake symbolic link to file: \nGMake symbolic link to file %s: \np", |
68780e2a RS |
2873 | doc: /* Make a symbolic link to FILENAME, named LINKNAME. |
2874 | Both args must be strings. | |
8c1a1077 PJ |
2875 | Signals a `file-already-exists' error if a file LINKNAME already exists |
2876 | unless optional third argument OK-IF-ALREADY-EXISTS is non-nil. | |
2877 | A number as third arg means request confirmation if LINKNAME already exists. | |
2878 | This happens for interactive use with M-x. */) | |
2879 | (filename, linkname, ok_if_already_exists) | |
e5d77022 | 2880 | Lisp_Object filename, linkname, ok_if_already_exists; |
570d7624 | 2881 | { |
32f4334d | 2882 | Lisp_Object handler; |
b1d1b865 RS |
2883 | Lisp_Object encoded_filename, encoded_linkname; |
2884 | struct gcpro gcpro1, gcpro2, gcpro3, gcpro4; | |
570d7624 | 2885 | |
b1d1b865 RS |
2886 | GCPRO4 (filename, linkname, encoded_filename, encoded_linkname); |
2887 | encoded_filename = encoded_linkname = Qnil; | |
b7826503 PJ |
2888 | CHECK_STRING (filename); |
2889 | CHECK_STRING (linkname); | |
d9bc1c99 RS |
2890 | /* If the link target has a ~, we must expand it to get |
2891 | a truly valid file name. Otherwise, do not expand; | |
2892 | we want to permit links to relative file names. */ | |
d5db4077 | 2893 | if (SREF (filename, 0) == '~') |
d9bc1c99 | 2894 | filename = Fexpand_file_name (filename, Qnil); |
1ffc5c90 RS |
2895 | |
2896 | if (!NILP (Ffile_directory_p (linkname))) | |
dac24db4 | 2897 | linkname = Fexpand_file_name (Ffile_name_nondirectory (filename), linkname); |
1ffc5c90 RS |
2898 | else |
2899 | linkname = Fexpand_file_name (linkname, Qnil); | |
32f4334d RS |
2900 | |
2901 | /* If the file name has special constructs in it, | |
2902 | call the corresponding file handler. */ | |
49307295 | 2903 | handler = Ffind_file_name_handler (filename, Qmake_symbolic_link); |
32f4334d | 2904 | if (!NILP (handler)) |
36712b0a KH |
2905 | RETURN_UNGCPRO (call4 (handler, Qmake_symbolic_link, filename, |
2906 | linkname, ok_if_already_exists)); | |
32f4334d | 2907 | |
adc6741c RS |
2908 | /* If the new link name has special constructs in it, |
2909 | call the corresponding file handler. */ | |
2910 | handler = Ffind_file_name_handler (linkname, Qmake_symbolic_link); | |
2911 | if (!NILP (handler)) | |
2912 | RETURN_UNGCPRO (call4 (handler, Qmake_symbolic_link, filename, | |
2913 | linkname, ok_if_already_exists)); | |
2914 | ||
b1d1b865 RS |
2915 | encoded_filename = ENCODE_FILE (filename); |
2916 | encoded_linkname = ENCODE_FILE (linkname); | |
2917 | ||
265a9e55 | 2918 | if (NILP (ok_if_already_exists) |
93c30b5f | 2919 | || INTEGERP (ok_if_already_exists)) |
2f868094 | 2920 | barf_or_query_if_file_exists (linkname, "make it a link", |
b8b29dc9 | 2921 | INTEGERP (ok_if_already_exists), 0, 0); |
d5db4077 KR |
2922 | if (0 > symlink (SDATA (encoded_filename), |
2923 | SDATA (encoded_linkname))) | |
570d7624 JB |
2924 | { |
2925 | /* If we didn't complain already, silently delete existing file. */ | |
2926 | if (errno == EEXIST) | |
2927 | { | |
d5db4077 KR |
2928 | unlink (SDATA (encoded_linkname)); |
2929 | if (0 <= symlink (SDATA (encoded_filename), | |
2930 | SDATA (encoded_linkname))) | |
1a04498e KH |
2931 | { |
2932 | UNGCPRO; | |
2933 | return Qnil; | |
2934 | } | |
570d7624 JB |
2935 | } |
2936 | ||
a9f2aeae | 2937 | report_file_error ("Making symbolic link", list2 (filename, linkname)); |
570d7624 JB |
2938 | } |
2939 | UNGCPRO; | |
2940 | return Qnil; | |
2941 | } | |
2942 | #endif /* S_IFLNK */ | |
2943 | ||
2944 | #ifdef VMS | |
2945 | ||
2946 | DEFUN ("define-logical-name", Fdefine_logical_name, Sdefine_logical_name, | |
2947 | 2, 2, "sDefine logical name: \nsDefine logical name %s as: ", | |
8c1a1077 PJ |
2948 | doc: /* Define the job-wide logical name NAME to have the value STRING. |
2949 | If STRING is nil or a null string, the logical name NAME is deleted. */) | |
2950 | (name, string) | |
3b7f6e60 | 2951 | Lisp_Object name; |
570d7624 JB |
2952 | Lisp_Object string; |
2953 | { | |
b7826503 | 2954 | CHECK_STRING (name); |
265a9e55 | 2955 | if (NILP (string)) |
d5db4077 | 2956 | delete_logical_name (SDATA (name)); |
570d7624 JB |
2957 | else |
2958 | { | |
b7826503 | 2959 | CHECK_STRING (string); |
570d7624 | 2960 | |
d5db4077 KR |
2961 | if (SCHARS (string) == 0) |
2962 | delete_logical_name (SDATA (name)); | |
570d7624 | 2963 | else |
d5db4077 | 2964 | define_logical_name (SDATA (name), SDATA (string)); |
570d7624 JB |
2965 | } |
2966 | ||
2967 | return string; | |
2968 | } | |
2969 | #endif /* VMS */ | |
2970 | ||
2971 | #ifdef HPUX_NET | |
2972 | ||
2973 | DEFUN ("sysnetunam", Fsysnetunam, Ssysnetunam, 2, 2, 0, | |
8c1a1077 | 2974 | doc: /* Open a network connection to PATH using LOGIN as the login string. */) |
570d7624 JB |
2975 | (path, login) |
2976 | Lisp_Object path, login; | |
2977 | { | |
2978 | int netresult; | |
199607e4 | 2979 | |
b7826503 PJ |
2980 | CHECK_STRING (path); |
2981 | CHECK_STRING (login); | |
199607e4 | 2982 | |
d5db4077 | 2983 | netresult = netunam (SDATA (path), SDATA (login)); |
570d7624 JB |
2984 | |
2985 | if (netresult == -1) | |
2986 | return Qnil; | |
2987 | else | |
2988 | return Qt; | |
2989 | } | |
2990 | #endif /* HPUX_NET */ | |
2991 | \f | |
2992 | DEFUN ("file-name-absolute-p", Ffile_name_absolute_p, Sfile_name_absolute_p, | |
2993 | 1, 1, 0, | |
8c1a1077 PJ |
2994 | doc: /* Return t if file FILENAME specifies an absolute file name. |
2995 | On Unix, this is a name starting with a `/' or a `~'. */) | |
570d7624 JB |
2996 | (filename) |
2997 | Lisp_Object filename; | |
2998 | { | |
b7826503 | 2999 | CHECK_STRING (filename); |
c70a4df6 | 3000 | return file_name_absolute_p (SDATA (filename)) ? Qt : Qnil; |
570d7624 | 3001 | } |
3beeedfe RS |
3002 | \f |
3003 | /* Return nonzero if file FILENAME exists and can be executed. */ | |
3004 | ||
3005 | static int | |
3006 | check_executable (filename) | |
3007 | char *filename; | |
3008 | { | |
3be3c08e RS |
3009 | #ifdef DOS_NT |
3010 | int len = strlen (filename); | |
3011 | char *suffix; | |
3012 | struct stat st; | |
3013 | if (stat (filename, &st) < 0) | |
3014 | return 0; | |
34ead71a | 3015 | #if defined (WINDOWSNT) || (defined (MSDOS) && __DJGPP__ > 1) |
199607e4 RS |
3016 | return ((st.st_mode & S_IEXEC) != 0); |
3017 | #else | |
3be3c08e RS |
3018 | return (S_ISREG (st.st_mode) |
3019 | && len >= 5 | |
3020 | && (stricmp ((suffix = filename + len-4), ".com") == 0 | |
3021 | || stricmp (suffix, ".exe") == 0 | |
2dc3be7e RS |
3022 | || stricmp (suffix, ".bat") == 0) |
3023 | || (st.st_mode & S_IFMT) == S_IFDIR); | |
199607e4 | 3024 | #endif /* not WINDOWSNT */ |
3be3c08e | 3025 | #else /* not DOS_NT */ |
de0be7dd RS |
3026 | #ifdef HAVE_EUIDACCESS |
3027 | return (euidaccess (filename, 1) >= 0); | |
3beeedfe RS |
3028 | #else |
3029 | /* Access isn't quite right because it uses the real uid | |
3030 | and we really want to test with the effective uid. | |
3031 | But Unix doesn't give us a right way to do it. */ | |
3032 | return (access (filename, 1) >= 0); | |
3033 | #endif | |
3be3c08e | 3034 | #endif /* not DOS_NT */ |
3beeedfe RS |
3035 | } |
3036 | ||
3037 | /* Return nonzero if file FILENAME exists and can be written. */ | |
3038 | ||
3039 | static int | |
3040 | check_writable (filename) | |
3041 | char *filename; | |
3042 | { | |
3be3c08e RS |
3043 | #ifdef MSDOS |
3044 | struct stat st; | |
3045 | if (stat (filename, &st) < 0) | |
3046 | return 0; | |
3047 | return (st.st_mode & S_IWRITE || (st.st_mode & S_IFMT) == S_IFDIR); | |
3048 | #else /* not MSDOS */ | |
41f3fb38 KH |
3049 | #ifdef HAVE_EUIDACCESS |
3050 | return (euidaccess (filename, 2) >= 0); | |
3beeedfe RS |
3051 | #else |
3052 | /* Access isn't quite right because it uses the real uid | |
3053 | and we really want to test with the effective uid. | |
3054 | But Unix doesn't give us a right way to do it. | |
3055 | Opening with O_WRONLY could work for an ordinary file, | |
3056 | but would lose for directories. */ | |
3057 | return (access (filename, 2) >= 0); | |
3058 | #endif | |
3be3c08e | 3059 | #endif /* not MSDOS */ |
3beeedfe | 3060 | } |
570d7624 JB |
3061 | |
3062 | DEFUN ("file-exists-p", Ffile_exists_p, Sfile_exists_p, 1, 1, 0, | |
68780e2a RS |
3063 | doc: /* Return t if file FILENAME exists (whether or not you can read it.) |
3064 | See also `file-readable-p' and `file-attributes'. | |
3065 | This returns nil for a symlink to a nonexistent file. | |
3066 | Use `file-symlink-p' to test for such links. */) | |
8c1a1077 | 3067 | (filename) |
570d7624 JB |
3068 | Lisp_Object filename; |
3069 | { | |
199607e4 | 3070 | Lisp_Object absname; |
32f4334d | 3071 | Lisp_Object handler; |
4018b5ef | 3072 | struct stat statbuf; |
570d7624 | 3073 | |
b7826503 | 3074 | CHECK_STRING (filename); |
199607e4 | 3075 | absname = Fexpand_file_name (filename, Qnil); |
32f4334d RS |
3076 | |
3077 | /* If the file name has special constructs in it, | |
3078 | call the corresponding file handler. */ | |
199607e4 | 3079 | handler = Ffind_file_name_handler (absname, Qfile_exists_p); |
32f4334d | 3080 | if (!NILP (handler)) |
199607e4 | 3081 | return call2 (handler, Qfile_exists_p, absname); |
32f4334d | 3082 | |
b1d1b865 RS |
3083 | absname = ENCODE_FILE (absname); |
3084 | ||
d5db4077 | 3085 | return (stat (SDATA (absname), &statbuf) >= 0) ? Qt : Qnil; |
570d7624 JB |
3086 | } |
3087 | ||
3088 | DEFUN ("file-executable-p", Ffile_executable_p, Sfile_executable_p, 1, 1, 0, | |
8c1a1077 PJ |
3089 | doc: /* Return t if FILENAME can be executed by you. |
3090 | For a directory, this means you can access files in that directory. */) | |
3091 | (filename) | |
3092 | Lisp_Object filename; | |
570d7624 | 3093 | { |
199607e4 | 3094 | Lisp_Object absname; |
32f4334d | 3095 | Lisp_Object handler; |
570d7624 | 3096 | |
b7826503 | 3097 | CHECK_STRING (filename); |
199607e4 | 3098 | absname = Fexpand_file_name (filename, Qnil); |
32f4334d RS |
3099 | |
3100 | /* If the file name has special constructs in it, | |
3101 | call the corresponding file handler. */ | |
199607e4 | 3102 | handler = Ffind_file_name_handler (absname, Qfile_executable_p); |
32f4334d | 3103 | if (!NILP (handler)) |
199607e4 | 3104 | return call2 (handler, Qfile_executable_p, absname); |
32f4334d | 3105 | |
b1d1b865 RS |
3106 | absname = ENCODE_FILE (absname); |
3107 | ||
d5db4077 | 3108 | return (check_executable (SDATA (absname)) ? Qt : Qnil); |
570d7624 JB |
3109 | } |
3110 | ||
3111 | DEFUN ("file-readable-p", Ffile_readable_p, Sfile_readable_p, 1, 1, 0, | |
8c1a1077 PJ |
3112 | doc: /* Return t if file FILENAME exists and you can read it. |
3113 | See also `file-exists-p' and `file-attributes'. */) | |
3114 | (filename) | |
570d7624 JB |
3115 | Lisp_Object filename; |
3116 | { | |
199607e4 | 3117 | Lisp_Object absname; |
32f4334d | 3118 | Lisp_Object handler; |
4018b5ef | 3119 | int desc; |
bb369dc6 RS |
3120 | int flags; |
3121 | struct stat statbuf; | |
570d7624 | 3122 | |
b7826503 | 3123 | CHECK_STRING (filename); |
199607e4 | 3124 | absname = Fexpand_file_name (filename, Qnil); |
32f4334d RS |
3125 | |
3126 | /* If the file name has special constructs in it, | |
3127 | call the corresponding file handler. */ | |
199607e4 | 3128 | handler = Ffind_file_name_handler (absname, Qfile_readable_p); |
32f4334d | 3129 | if (!NILP (handler)) |
199607e4 | 3130 | return call2 (handler, Qfile_readable_p, absname); |
32f4334d | 3131 | |
b1d1b865 RS |
3132 | absname = ENCODE_FILE (absname); |
3133 | ||
fb4c6c96 AC |
3134 | #if defined(DOS_NT) || defined(macintosh) |
3135 | /* Under MS-DOS, Windows, and Macintosh, open does not work for | |
3136 | directories. */ | |
d5db4077 | 3137 | if (access (SDATA (absname), 0) == 0) |
a8a7d065 RS |
3138 | return Qt; |
3139 | return Qnil; | |
fb4c6c96 | 3140 | #else /* not DOS_NT and not macintosh */ |
bb369dc6 RS |
3141 | flags = O_RDONLY; |
3142 | #if defined (S_ISFIFO) && defined (O_NONBLOCK) | |
3143 | /* Opening a fifo without O_NONBLOCK can wait. | |
3144 | We don't want to wait. But we don't want to mess wth O_NONBLOCK | |
3145 | except in the case of a fifo, on a system which handles it. */ | |
d5db4077 | 3146 | desc = stat (SDATA (absname), &statbuf); |
bb369dc6 RS |
3147 | if (desc < 0) |
3148 | return Qnil; | |
3149 | if (S_ISFIFO (statbuf.st_mode)) | |
3150 | flags |= O_NONBLOCK; | |
3151 | #endif | |
d5db4077 | 3152 | desc = emacs_open (SDATA (absname), flags, 0); |
4018b5ef RS |
3153 | if (desc < 0) |
3154 | return Qnil; | |
68c45bf0 | 3155 | emacs_close (desc); |
4018b5ef | 3156 | return Qt; |
fb4c6c96 | 3157 | #endif /* not DOS_NT and not macintosh */ |
570d7624 JB |
3158 | } |
3159 | ||
f793dc6c RS |
3160 | /* Having this before file-symlink-p mysteriously caused it to be forgotten |
3161 | on the RT/PC. */ | |
3162 | DEFUN ("file-writable-p", Ffile_writable_p, Sfile_writable_p, 1, 1, 0, | |
8c1a1077 PJ |
3163 | doc: /* Return t if file FILENAME can be written or created by you. */) |
3164 | (filename) | |
f793dc6c RS |
3165 | Lisp_Object filename; |
3166 | { | |
b1d1b865 | 3167 | Lisp_Object absname, dir, encoded; |
f793dc6c RS |
3168 | Lisp_Object handler; |
3169 | struct stat statbuf; | |
3170 | ||
b7826503 | 3171 | CHECK_STRING (filename); |
199607e4 | 3172 | absname = Fexpand_file_name (filename, Qnil); |
f793dc6c RS |
3173 | |
3174 | /* If the file name has special constructs in it, | |
3175 | call the corresponding file handler. */ | |
199607e4 | 3176 | handler = Ffind_file_name_handler (absname, Qfile_writable_p); |
f793dc6c | 3177 | if (!NILP (handler)) |
199607e4 | 3178 | return call2 (handler, Qfile_writable_p, absname); |
f793dc6c | 3179 | |
b1d1b865 | 3180 | encoded = ENCODE_FILE (absname); |
d5db4077 KR |
3181 | if (stat (SDATA (encoded), &statbuf) >= 0) |
3182 | return (check_writable (SDATA (encoded)) | |
f793dc6c | 3183 | ? Qt : Qnil); |
b1d1b865 | 3184 | |
199607e4 | 3185 | dir = Ffile_name_directory (absname); |
f793dc6c RS |
3186 | #ifdef VMS |
3187 | if (!NILP (dir)) | |
3188 | dir = Fdirectory_file_name (dir); | |
3189 | #endif /* VMS */ | |
3190 | #ifdef MSDOS | |
3191 | if (!NILP (dir)) | |
3192 | dir = Fdirectory_file_name (dir); | |
3193 | #endif /* MSDOS */ | |
b1d1b865 RS |
3194 | |
3195 | dir = ENCODE_FILE (dir); | |
e3e8a75a GM |
3196 | #ifdef WINDOWSNT |
3197 | /* The read-only attribute of the parent directory doesn't affect | |
3198 | whether a file or directory can be created within it. Some day we | |
3199 | should check ACLs though, which do affect this. */ | |
d5db4077 | 3200 | if (stat (SDATA (dir), &statbuf) < 0) |
e3e8a75a GM |
3201 | return Qnil; |
3202 | return (statbuf.st_mode & S_IFMT) == S_IFDIR ? Qt : Qnil; | |
3203 | #else | |
d5db4077 | 3204 | return (check_writable (!NILP (dir) ? (char *) SDATA (dir) : "") |
f793dc6c | 3205 | ? Qt : Qnil); |
e3e8a75a | 3206 | #endif |
f793dc6c RS |
3207 | } |
3208 | \f | |
1f8653eb | 3209 | DEFUN ("access-file", Faccess_file, Saccess_file, 2, 2, 0, |
8c1a1077 PJ |
3210 | doc: /* Access file FILENAME, and get an error if that does not work. |
3211 | The second argument STRING is used in the error message. | |
a4e03fe5 | 3212 | If there is no error, returns nil. */) |
8c1a1077 | 3213 | (filename, string) |
1f8653eb RS |
3214 | Lisp_Object filename, string; |
3215 | { | |
49475635 | 3216 | Lisp_Object handler, encoded_filename, absname; |
1f8653eb RS |
3217 | int fd; |
3218 | ||
b7826503 | 3219 | CHECK_STRING (filename); |
49475635 EZ |
3220 | absname = Fexpand_file_name (filename, Qnil); |
3221 | ||
b7826503 | 3222 | CHECK_STRING (string); |
1f8653eb RS |
3223 | |
3224 | /* If the file name has special constructs in it, | |
3225 | call the corresponding file handler. */ | |
49475635 | 3226 | handler = Ffind_file_name_handler (absname, Qaccess_file); |
1f8653eb | 3227 | if (!NILP (handler)) |
49475635 | 3228 | return call3 (handler, Qaccess_file, absname, string); |
1f8653eb | 3229 | |
49475635 | 3230 | encoded_filename = ENCODE_FILE (absname); |
b1d1b865 | 3231 | |
d5db4077 | 3232 | fd = emacs_open (SDATA (encoded_filename), O_RDONLY, 0); |
1f8653eb | 3233 | if (fd < 0) |
d5db4077 | 3234 | report_file_error (SDATA (string), Fcons (filename, Qnil)); |
68c45bf0 | 3235 | emacs_close (fd); |
1f8653eb RS |
3236 | |
3237 | return Qnil; | |
3238 | } | |
3239 | \f | |
570d7624 | 3240 | DEFUN ("file-symlink-p", Ffile_symlink_p, Sfile_symlink_p, 1, 1, 0, |
8c1a1077 | 3241 | doc: /* Return non-nil if file FILENAME is the name of a symbolic link. |
1c353c74 | 3242 | The value is the link target, as a string. |
68780e2a RS |
3243 | Otherwise it returns nil. |
3244 | ||
3245 | This function returns t when given the name of a symlink that | |
3246 | points to a nonexistent file. */) | |
8c1a1077 | 3247 | (filename) |
570d7624 JB |
3248 | Lisp_Object filename; |
3249 | { | |
32f4334d | 3250 | Lisp_Object handler; |
570d7624 | 3251 | |
b7826503 | 3252 | CHECK_STRING (filename); |
570d7624 JB |
3253 | filename = Fexpand_file_name (filename, Qnil); |
3254 | ||
32f4334d RS |
3255 | /* If the file name has special constructs in it, |
3256 | call the corresponding file handler. */ | |
49307295 | 3257 | handler = Ffind_file_name_handler (filename, Qfile_symlink_p); |
32f4334d RS |
3258 | if (!NILP (handler)) |
3259 | return call2 (handler, Qfile_symlink_p, filename); | |
3260 | ||
5adcec23 JR |
3261 | #ifdef S_IFLNK |
3262 | { | |
3263 | char *buf; | |
3264 | int bufsize; | |
3265 | int valsize; | |
3266 | Lisp_Object val; | |
3267 | ||
b1d1b865 RS |
3268 | filename = ENCODE_FILE (filename); |
3269 | ||
81c3310d GM |
3270 | bufsize = 50; |
3271 | buf = NULL; | |
3272 | do | |
570d7624 | 3273 | { |
81c3310d GM |
3274 | bufsize *= 2; |
3275 | buf = (char *) xrealloc (buf, bufsize); | |
570d7624 | 3276 | bzero (buf, bufsize); |
efdc16c9 | 3277 | |
81c3310d | 3278 | errno = 0; |
d5db4077 | 3279 | valsize = readlink (SDATA (filename), buf, bufsize); |
bcdd93b3 GM |
3280 | if (valsize == -1) |
3281 | { | |
81c3310d GM |
3282 | #ifdef ERANGE |
3283 | /* HP-UX reports ERANGE if buffer is too small. */ | |
bcdd93b3 GM |
3284 | if (errno == ERANGE) |
3285 | valsize = bufsize; | |
3286 | else | |
81c3310d | 3287 | #endif |
bcdd93b3 GM |
3288 | { |
3289 | xfree (buf); | |
3290 | return Qnil; | |
3291 | } | |
81c3310d | 3292 | } |
570d7624 | 3293 | } |
81c3310d | 3294 | while (valsize >= bufsize); |
efdc16c9 | 3295 | |
570d7624 | 3296 | val = make_string (buf, valsize); |
69ac1891 GM |
3297 | if (buf[0] == '/' && index (buf, ':')) |
3298 | val = concat2 (build_string ("/:"), val); | |
9ac0d9e0 | 3299 | xfree (buf); |
cd913586 KH |
3300 | val = DECODE_FILE (val); |
3301 | return val; | |
5adcec23 | 3302 | } |
570d7624 JB |
3303 | #else /* not S_IFLNK */ |
3304 | return Qnil; | |
3305 | #endif /* not S_IFLNK */ | |
3306 | } | |
3307 | ||
570d7624 | 3308 | DEFUN ("file-directory-p", Ffile_directory_p, Sfile_directory_p, 1, 1, 0, |
8c1a1077 PJ |
3309 | doc: /* Return t if FILENAME names an existing directory. |
3310 | Symbolic links to directories count as directories. | |
3311 | See `file-symlink-p' to distinguish symlinks. */) | |
3312 | (filename) | |
570d7624 JB |
3313 | Lisp_Object filename; |
3314 | { | |
199607e4 | 3315 | register Lisp_Object absname; |
570d7624 | 3316 | struct stat st; |
32f4334d | 3317 | Lisp_Object handler; |
570d7624 | 3318 | |
199607e4 | 3319 | absname = expand_and_dir_to_file (filename, current_buffer->directory); |
570d7624 | 3320 | |
32f4334d RS |
3321 | /* If the file name has special constructs in it, |
3322 | call the corresponding file handler. */ | |
199607e4 | 3323 | handler = Ffind_file_name_handler (absname, Qfile_directory_p); |
32f4334d | 3324 | if (!NILP (handler)) |
199607e4 | 3325 | return call2 (handler, Qfile_directory_p, absname); |
32f4334d | 3326 | |
b1d1b865 RS |
3327 | absname = ENCODE_FILE (absname); |
3328 | ||
d5db4077 | 3329 | if (stat (SDATA (absname), &st) < 0) |
570d7624 JB |
3330 | return Qnil; |
3331 | return (st.st_mode & S_IFMT) == S_IFDIR ? Qt : Qnil; | |
3332 | } | |
3333 | ||
b72dea2a | 3334 | DEFUN ("file-accessible-directory-p", Ffile_accessible_directory_p, Sfile_accessible_directory_p, 1, 1, 0, |
e385ec41 RS |
3335 | doc: /* Return t if file FILENAME names a directory you can open. |
3336 | For the value to be t, FILENAME must specify the name of a directory as a file, | |
3337 | and the directory must allow you to open files in it. In order to use a | |
8c1a1077 PJ |
3338 | directory as a buffer's current directory, this predicate must return true. |
3339 | A directory name spec may be given instead; then the value is t | |
3340 | if the directory so specified exists and really is a readable and | |
3341 | searchable directory. */) | |
3342 | (filename) | |
b72dea2a JB |
3343 | Lisp_Object filename; |
3344 | { | |
32f4334d | 3345 | Lisp_Object handler; |
1a04498e | 3346 | int tem; |
d26859eb | 3347 | struct gcpro gcpro1; |
32f4334d RS |
3348 | |
3349 | /* If the file name has special constructs in it, | |
3350 | call the corresponding file handler. */ | |
49307295 | 3351 | handler = Ffind_file_name_handler (filename, Qfile_accessible_directory_p); |
32f4334d RS |
3352 | if (!NILP (handler)) |
3353 | return call2 (handler, Qfile_accessible_directory_p, filename); | |
3354 | ||
d26859eb | 3355 | GCPRO1 (filename); |
1a04498e KH |
3356 | tem = (NILP (Ffile_directory_p (filename)) |
3357 | || NILP (Ffile_executable_p (filename))); | |
d26859eb | 3358 | UNGCPRO; |
1a04498e | 3359 | return tem ? Qnil : Qt; |
b72dea2a JB |
3360 | } |
3361 | ||
f793dc6c | 3362 | DEFUN ("file-regular-p", Ffile_regular_p, Sfile_regular_p, 1, 1, 0, |
19a9c3b7 LH |
3363 | doc: /* Return t if FILENAME names a regular file. |
3364 | This is the sort of file that holds an ordinary stream of data bytes. | |
3365 | Symbolic links to regular files count as regular files. | |
3366 | See `file-symlink-p' to distinguish symlinks. */) | |
8c1a1077 | 3367 | (filename) |
f793dc6c RS |
3368 | Lisp_Object filename; |
3369 | { | |
199607e4 | 3370 | register Lisp_Object absname; |
f793dc6c RS |
3371 | struct stat st; |
3372 | Lisp_Object handler; | |
3373 | ||
199607e4 | 3374 | absname = expand_and_dir_to_file (filename, current_buffer->directory); |
f793dc6c RS |
3375 | |
3376 | /* If the file name has special constructs in it, | |
3377 | call the corresponding file handler. */ | |
199607e4 | 3378 | handler = Ffind_file_name_handler (absname, Qfile_regular_p); |
f793dc6c | 3379 | if (!NILP (handler)) |
199607e4 | 3380 | return call2 (handler, Qfile_regular_p, absname); |
f793dc6c | 3381 | |
b1d1b865 RS |
3382 | absname = ENCODE_FILE (absname); |
3383 | ||
c1c4693e RS |
3384 | #ifdef WINDOWSNT |
3385 | { | |
3386 | int result; | |
3387 | Lisp_Object tem = Vw32_get_true_file_attributes; | |
3388 | ||
3389 | /* Tell stat to use expensive method to get accurate info. */ | |
3390 | Vw32_get_true_file_attributes = Qt; | |
d5db4077 | 3391 | result = stat (SDATA (absname), &st); |
c1c4693e RS |
3392 | Vw32_get_true_file_attributes = tem; |
3393 | ||
3394 | if (result < 0) | |
3395 | return Qnil; | |
3396 | return (st.st_mode & S_IFMT) == S_IFREG ? Qt : Qnil; | |
3397 | } | |
3398 | #else | |
d5db4077 | 3399 | if (stat (SDATA (absname), &st) < 0) |
f793dc6c RS |
3400 | return Qnil; |
3401 | return (st.st_mode & S_IFMT) == S_IFREG ? Qt : Qnil; | |
c1c4693e | 3402 | #endif |
f793dc6c RS |
3403 | } |
3404 | \f | |
570d7624 | 3405 | DEFUN ("file-modes", Ffile_modes, Sfile_modes, 1, 1, 0, |
d4a42098 KS |
3406 | doc: /* Return mode bits of file named FILENAME, as an integer. |
3407 | Return nil, if file does not exist or is not accessible. */) | |
8c1a1077 | 3408 | (filename) |
570d7624 JB |
3409 | Lisp_Object filename; |
3410 | { | |
199607e4 | 3411 | Lisp_Object absname; |
570d7624 | 3412 | struct stat st; |
32f4334d | 3413 | Lisp_Object handler; |
570d7624 | 3414 | |
199607e4 | 3415 | absname = expand_and_dir_to_file (filename, current_buffer->directory); |
570d7624 | 3416 | |
32f4334d RS |
3417 | /* If the file name has special constructs in it, |
3418 | call the corresponding file handler. */ | |
199607e4 | 3419 | handler = Ffind_file_name_handler (absname, Qfile_modes); |
32f4334d | 3420 | if (!NILP (handler)) |
199607e4 | 3421 | return call2 (handler, Qfile_modes, absname); |
32f4334d | 3422 | |
b1d1b865 RS |
3423 | absname = ENCODE_FILE (absname); |
3424 | ||
d5db4077 | 3425 | if (stat (SDATA (absname), &st) < 0) |
570d7624 | 3426 | return Qnil; |
34ead71a | 3427 | #if defined (MSDOS) && __DJGPP__ < 2 |
d5db4077 | 3428 | if (check_executable (SDATA (absname))) |
3be3c08e | 3429 | st.st_mode |= S_IEXEC; |
34ead71a | 3430 | #endif /* MSDOS && __DJGPP__ < 2 */ |
3ace87e3 | 3431 | |
570d7624 JB |
3432 | return make_number (st.st_mode & 07777); |
3433 | } | |
3434 | ||
09fbdf6c MC |
3435 | DEFUN ("set-file-modes", Fset_file_modes, Sset_file_modes, 2, 2, |
3436 | "(let ((file (read-file-name \"File: \"))) \ | |
3437 | (list file (read-file-modes nil file)))", | |
8c1a1077 PJ |
3438 | doc: /* Set mode bits of file named FILENAME to MODE (an integer). |
3439 | Only the 12 low bits of MODE are used. */) | |
570d7624 JB |
3440 | (filename, mode) |
3441 | Lisp_Object filename, mode; | |
3442 | { | |
b1d1b865 | 3443 | Lisp_Object absname, encoded_absname; |
32f4334d | 3444 | Lisp_Object handler; |
570d7624 | 3445 | |
199607e4 | 3446 | absname = Fexpand_file_name (filename, current_buffer->directory); |
b7826503 | 3447 | CHECK_NUMBER (mode); |
570d7624 | 3448 | |
32f4334d RS |
3449 | /* If the file name has special constructs in it, |
3450 | call the corresponding file handler. */ | |
199607e4 | 3451 | handler = Ffind_file_name_handler (absname, Qset_file_modes); |
32f4334d | 3452 | if (!NILP (handler)) |
199607e4 | 3453 | return call3 (handler, Qset_file_modes, absname, mode); |
32f4334d | 3454 | |
b1d1b865 RS |
3455 | encoded_absname = ENCODE_FILE (absname); |
3456 | ||
d5db4077 | 3457 | if (chmod (SDATA (encoded_absname), XINT (mode)) < 0) |
199607e4 | 3458 | report_file_error ("Doing chmod", Fcons (absname, Qnil)); |
570d7624 JB |
3459 | |
3460 | return Qnil; | |
3461 | } | |
3462 | ||
c24e9a53 | 3463 | DEFUN ("set-default-file-modes", Fset_default_file_modes, Sset_default_file_modes, 1, 1, 0, |
8c1a1077 PJ |
3464 | doc: /* Set the file permission bits for newly created files. |
3465 | The argument MODE should be an integer; only the low 9 bits are used. | |
3466 | This setting is inherited by subprocesses. */) | |
3467 | (mode) | |
5f85ea58 | 3468 | Lisp_Object mode; |
36a8c287 | 3469 | { |
b7826503 | 3470 | CHECK_NUMBER (mode); |
199607e4 | 3471 | |
5f85ea58 | 3472 | umask ((~ XINT (mode)) & 0777); |
36a8c287 JB |
3473 | |
3474 | return Qnil; | |
3475 | } | |
3476 | ||
c24e9a53 | 3477 | DEFUN ("default-file-modes", Fdefault_file_modes, Sdefault_file_modes, 0, 0, 0, |
8c1a1077 PJ |
3478 | doc: /* Return the default file protection for created files. |
3479 | The value is an integer. */) | |
3480 | () | |
36a8c287 | 3481 | { |
5f85ea58 RS |
3482 | int realmask; |
3483 | Lisp_Object value; | |
36a8c287 | 3484 | |
5f85ea58 RS |
3485 | realmask = umask (0); |
3486 | umask (realmask); | |
36a8c287 | 3487 | |
46283abe | 3488 | XSETINT (value, (~ realmask) & 0777); |
5f85ea58 | 3489 | return value; |
36a8c287 | 3490 | } |
819da85b EZ |
3491 | \f |
3492 | extern int lisp_time_argument P_ ((Lisp_Object, time_t *, int *)); | |
3493 | ||
3494 | DEFUN ("set-file-times", Fset_file_times, Sset_file_times, 1, 2, 0, | |
3495 | doc: /* Set times of file FILENAME to TIME. | |
3496 | Set both access and modification times. | |
3497 | Return t on success, else nil. | |
3498 | Use the current time if TIME is nil. TIME is in the format of | |
3499 | `current-time'. */) | |
3500 | (filename, time) | |
3501 | Lisp_Object filename, time; | |
3502 | { | |
3503 | Lisp_Object absname, encoded_absname; | |
3504 | Lisp_Object handler; | |
3505 | time_t sec; | |
3506 | int usec; | |
3507 | ||
3508 | if (! lisp_time_argument (time, &sec, &usec)) | |
3509 | error ("Invalid time specification"); | |
3510 | ||
3511 | absname = Fexpand_file_name (filename, current_buffer->directory); | |
3512 | ||
3513 | /* If the file name has special constructs in it, | |
3514 | call the corresponding file handler. */ | |
3515 | handler = Ffind_file_name_handler (absname, Qset_file_times); | |
3516 | if (!NILP (handler)) | |
3517 | return call3 (handler, Qset_file_times, absname, time); | |
3518 | ||
3519 | encoded_absname = ENCODE_FILE (absname); | |
5df5e07c | 3520 | |
819da85b EZ |
3521 | { |
3522 | EMACS_TIME t; | |
3523 | ||
3524 | EMACS_SET_SECS (t, sec); | |
3525 | EMACS_SET_USECS (t, usec); | |
3526 | ||
3527 | if (set_file_times (SDATA (encoded_absname), t, t)) | |
3528 | { | |
3529 | #ifdef DOS_NT | |
3530 | struct stat st; | |
3531 | ||
3532 | /* Setting times on a directory always fails. */ | |
3533 | if (stat (SDATA (encoded_absname), &st) == 0 | |
3534 | && (st.st_mode & S_IFMT) == S_IFDIR) | |
3535 | return Qnil; | |
3536 | #endif | |
3537 | report_file_error ("Setting file times", Fcons (absname, Qnil)); | |
3538 | return Qnil; | |
3539 | } | |
3540 | } | |
5df5e07c | 3541 | |
819da85b EZ |
3542 | return Qt; |
3543 | } | |
f793dc6c | 3544 | \f |
697c17a2 | 3545 | #ifdef HAVE_SYNC |
85ffea93 | 3546 | DEFUN ("unix-sync", Funix_sync, Sunix_sync, 0, 0, "", |
8c1a1077 PJ |
3547 | doc: /* Tell Unix to finish all pending disk updates. */) |
3548 | () | |
85ffea93 RS |
3549 | { |
3550 | sync (); | |
3551 | return Qnil; | |
3552 | } | |
3553 | ||
697c17a2 | 3554 | #endif /* HAVE_SYNC */ |
85ffea93 | 3555 | |
570d7624 | 3556 | DEFUN ("file-newer-than-file-p", Ffile_newer_than_file_p, Sfile_newer_than_file_p, 2, 2, 0, |
8c1a1077 PJ |
3557 | doc: /* Return t if file FILE1 is newer than file FILE2. |
3558 | If FILE1 does not exist, the answer is nil; | |
3559 | otherwise, if FILE2 does not exist, the answer is t. */) | |
3560 | (file1, file2) | |
570d7624 JB |
3561 | Lisp_Object file1, file2; |
3562 | { | |
199607e4 | 3563 | Lisp_Object absname1, absname2; |
570d7624 JB |
3564 | struct stat st; |
3565 | int mtime1; | |
32f4334d | 3566 | Lisp_Object handler; |
09121adc | 3567 | struct gcpro gcpro1, gcpro2; |
570d7624 | 3568 | |
b7826503 PJ |
3569 | CHECK_STRING (file1); |
3570 | CHECK_STRING (file2); | |
570d7624 | 3571 | |
199607e4 RS |
3572 | absname1 = Qnil; |
3573 | GCPRO2 (absname1, file2); | |
3574 | absname1 = expand_and_dir_to_file (file1, current_buffer->directory); | |
3575 | absname2 = expand_and_dir_to_file (file2, current_buffer->directory); | |
09121adc | 3576 | UNGCPRO; |
570d7624 | 3577 | |
32f4334d RS |
3578 | /* If the file name has special constructs in it, |
3579 | call the corresponding file handler. */ | |
199607e4 | 3580 | handler = Ffind_file_name_handler (absname1, Qfile_newer_than_file_p); |
51cf6d37 | 3581 | if (NILP (handler)) |
199607e4 | 3582 | handler = Ffind_file_name_handler (absname2, Qfile_newer_than_file_p); |
32f4334d | 3583 | if (!NILP (handler)) |
199607e4 | 3584 | return call3 (handler, Qfile_newer_than_file_p, absname1, absname2); |
32f4334d | 3585 | |
b1d1b865 RS |
3586 | GCPRO2 (absname1, absname2); |
3587 | absname1 = ENCODE_FILE (absname1); | |
3588 | absname2 = ENCODE_FILE (absname2); | |
3589 | UNGCPRO; | |
3590 | ||
d5db4077 | 3591 | if (stat (SDATA (absname1), &st) < 0) |
570d7624 JB |
3592 | return Qnil; |
3593 | ||
3594 | mtime1 = st.st_mtime; | |
3595 | ||
d5db4077 | 3596 | if (stat (SDATA (absname2), &st) < 0) |
570d7624 JB |
3597 | return Qt; |
3598 | ||
3599 | return (mtime1 > st.st_mtime) ? Qt : Qnil; | |
3600 | } | |
3601 | \f | |
5e570b75 | 3602 | #ifdef DOS_NT |
4c3c22f3 | 3603 | Lisp_Object Qfind_buffer_file_type; |
5e570b75 | 3604 | #endif /* DOS_NT */ |
4c3c22f3 | 3605 | |
6fdaa9a0 KH |
3606 | #ifndef READ_BUF_SIZE |
3607 | #define READ_BUF_SIZE (64 << 10) | |
3608 | #endif | |
3609 | ||
98a7d268 KH |
3610 | extern void adjust_markers_for_delete P_ ((int, int, int, int)); |
3611 | ||
3612 | /* This function is called after Lisp functions to decide a coding | |
3613 | system are called, or when they cause an error. Before they are | |
3614 | called, the current buffer is set unibyte and it contains only a | |
3615 | newly inserted text (thus the buffer was empty before the | |
3616 | insertion). | |
3617 | ||
3618 | The functions may set markers, overlays, text properties, or even | |
3619 | alter the buffer contents, change the current buffer. | |
3620 | ||
3621 | Here, we reset all those changes by: | |
3622 | o set back the current buffer. | |
3623 | o move all markers and overlays to BEG. | |
3624 | o remove all text properties. | |
3625 | o set back the buffer multibyteness. */ | |
f736ffbf KH |
3626 | |
3627 | static Lisp_Object | |
98a7d268 KH |
3628 | decide_coding_unwind (unwind_data) |
3629 | Lisp_Object unwind_data; | |
f736ffbf | 3630 | { |
98a7d268 | 3631 | Lisp_Object multibyte, undo_list, buffer; |
f736ffbf | 3632 | |
98a7d268 KH |
3633 | multibyte = XCAR (unwind_data); |
3634 | unwind_data = XCDR (unwind_data); | |
3635 | undo_list = XCAR (unwind_data); | |
3636 | buffer = XCDR (unwind_data); | |
3637 | ||
3638 | if (current_buffer != XBUFFER (buffer)) | |
3639 | set_buffer_internal (XBUFFER (buffer)); | |
3640 | adjust_markers_for_delete (BEG, BEG_BYTE, Z, Z_BYTE); | |
3641 | adjust_overlays_for_delete (BEG, Z - BEG); | |
3642 | BUF_INTERVALS (current_buffer) = 0; | |
3643 | TEMP_SET_PT_BOTH (BEG, BEG_BYTE); | |
3644 | ||
3645 | /* Now we are safe to change the buffer's multibyteness directly. */ | |
3646 | current_buffer->enable_multibyte_characters = multibyte; | |
3647 | current_buffer->undo_list = undo_list; | |
f736ffbf KH |
3648 | |
3649 | return Qnil; | |
3650 | } | |
3651 | ||
55587f8a | 3652 | |
1b978129 | 3653 | /* Used to pass values from insert-file-contents to read_non_regular. */ |
55587f8a | 3654 | |
1b978129 GM |
3655 | static int non_regular_fd; |
3656 | static int non_regular_inserted; | |
3657 | static int non_regular_nbytes; | |
55587f8a | 3658 | |
55587f8a | 3659 | |
1b978129 GM |
3660 | /* Read from a non-regular file. |
3661 | Read non_regular_trytry bytes max from non_regular_fd. | |
3662 | Non_regular_inserted specifies where to put the read bytes. | |
3663 | Value is the number of bytes read. */ | |
55587f8a GM |
3664 | |
3665 | static Lisp_Object | |
1b978129 | 3666 | read_non_regular () |
55587f8a | 3667 | { |
1b978129 | 3668 | int nbytes; |
efdc16c9 | 3669 | |
1b978129 GM |
3670 | immediate_quit = 1; |
3671 | QUIT; | |
3672 | nbytes = emacs_read (non_regular_fd, | |
28c3eb5a | 3673 | BEG_ADDR + PT_BYTE - BEG_BYTE + non_regular_inserted, |
1b978129 | 3674 | non_regular_nbytes); |
1b978129 GM |
3675 | immediate_quit = 0; |
3676 | return make_number (nbytes); | |
3677 | } | |
55587f8a | 3678 | |
d0e2444e | 3679 | |
1b978129 GM |
3680 | /* Condition-case handler used when reading from non-regular files |
3681 | in insert-file-contents. */ | |
3682 | ||
3683 | static Lisp_Object | |
3684 | read_non_regular_quit () | |
3685 | { | |
55587f8a GM |
3686 | return Qnil; |
3687 | } | |
3688 | ||
3689 | ||
570d7624 | 3690 | DEFUN ("insert-file-contents", Finsert_file_contents, Sinsert_file_contents, |
8c1a1077 PJ |
3691 | 1, 5, 0, |
3692 | doc: /* Insert contents of file FILENAME after point. | |
cf6d2357 | 3693 | Returns list of absolute file name and number of characters inserted. |
6f2528d8 MR |
3694 | If second argument VISIT is non-nil, the buffer's visited filename and |
3695 | last save file modtime are set, and it is marked unmodified. If | |
3696 | visiting and the file does not exist, visiting is completed before the | |
3697 | error is signaled. | |
3698 | ||
3699 | The optional third and fourth arguments BEG and END specify what portion | |
3700 | of the file to insert. These arguments count bytes in the file, not | |
3701 | characters in the buffer. If VISIT is non-nil, BEG and END must be nil. | |
3702 | ||
3703 | If optional fifth argument REPLACE is non-nil, replace the current | |
3704 | buffer contents (in the accessible portion) with the file contents. | |
3705 | This is better than simply deleting and inserting the whole thing | |
3706 | because (1) it preserves some marker positions and (2) it puts less data | |
3707 | in the undo list. When REPLACE is non-nil, the second return value is | |
3708 | the number of characters that replace previous buffer contents. | |
3709 | ||
3710 | This function does code conversion according to the value of | |
3711 | `coding-system-for-read' or `file-coding-system-alist', and sets the | |
3712 | variable `last-coding-system-used' to the coding system actually used. */) | |
8c1a1077 | 3713 | (filename, visit, beg, end, replace) |
3d0387c0 | 3714 | Lisp_Object filename, visit, beg, end, replace; |
570d7624 JB |
3715 | { |
3716 | struct stat st; | |
3717 | register int fd; | |
ec7adf26 | 3718 | int inserted = 0; |
18a9f8d9 | 3719 | int nochange = 0; |
570d7624 | 3720 | register int how_much; |
6fdaa9a0 | 3721 | register int unprocessed; |
331379bf | 3722 | int count = SPECPDL_INDEX (); |
6f2528d8 MR |
3723 | struct gcpro gcpro1, gcpro2, gcpro3, gcpro4, gcpro5; |
3724 | Lisp_Object handler, val, insval, orig_filename, old_undo; | |
d6a3cc15 | 3725 | Lisp_Object p; |
6bbd7a29 | 3726 | int total = 0; |
53c34c46 | 3727 | int not_regular = 0; |
feb9dc27 | 3728 | unsigned char read_buf[READ_BUF_SIZE]; |
6fdaa9a0 | 3729 | struct coding_system coding; |
3dbcf3f6 | 3730 | unsigned char buffer[1 << 14]; |
727a0b4a | 3731 | int replace_handled = 0; |
ec7adf26 | 3732 | int set_coding_system = 0; |
db327c7e | 3733 | Lisp_Object coding_system; |
1b978129 | 3734 | int read_quit = 0; |
490ee853 | 3735 | Lisp_Object old_Vdeactivate_mark = Vdeactivate_mark; |
68780e2a | 3736 | int we_locked_file = 0; |
32f4334d | 3737 | |
95385625 RS |
3738 | if (current_buffer->base_buffer && ! NILP (visit)) |
3739 | error ("Cannot do file visiting in an indirect buffer"); | |
3740 | ||
3741 | if (!NILP (current_buffer->read_only)) | |
3742 | Fbarf_if_buffer_read_only (); | |
3743 | ||
32f4334d | 3744 | val = Qnil; |
d6a3cc15 | 3745 | p = Qnil; |
b1d1b865 | 3746 | orig_filename = Qnil; |
6f2528d8 | 3747 | old_undo = Qnil; |
32f4334d | 3748 | |
6f2528d8 | 3749 | GCPRO5 (filename, val, p, orig_filename, old_undo); |
570d7624 | 3750 | |
b7826503 | 3751 | CHECK_STRING (filename); |
570d7624 JB |
3752 | filename = Fexpand_file_name (filename, Qnil); |
3753 | ||
1c157f8d KH |
3754 | /* The value Qnil means that the coding system is not yet |
3755 | decided. */ | |
3756 | coding_system = Qnil; | |
3757 | ||
32f4334d RS |
3758 | /* If the file name has special constructs in it, |
3759 | call the corresponding file handler. */ | |
49307295 | 3760 | handler = Ffind_file_name_handler (filename, Qinsert_file_contents); |
32f4334d RS |
3761 | if (!NILP (handler)) |
3762 | { | |
3d0387c0 RS |
3763 | val = call6 (handler, Qinsert_file_contents, filename, |
3764 | visit, beg, end, replace); | |
03699b14 KR |
3765 | if (CONSP (val) && CONSP (XCDR (val))) |
3766 | inserted = XINT (XCAR (XCDR (val))); | |
32f4334d RS |
3767 | goto handled; |
3768 | } | |
3769 | ||
b1d1b865 RS |
3770 | orig_filename = filename; |
3771 | filename = ENCODE_FILE (filename); | |
3772 | ||
570d7624 JB |
3773 | fd = -1; |
3774 | ||
c1c4693e RS |
3775 | #ifdef WINDOWSNT |
3776 | { | |
3777 | Lisp_Object tem = Vw32_get_true_file_attributes; | |
3778 | ||
3779 | /* Tell stat to use expensive method to get accurate info. */ | |
3780 | Vw32_get_true_file_attributes = Qt; | |
d5db4077 | 3781 | total = stat (SDATA (filename), &st); |
c1c4693e RS |
3782 | Vw32_get_true_file_attributes = tem; |
3783 | } | |
3784 | if (total < 0) | |
3785 | #else | |
d5db4077 | 3786 | if (stat (SDATA (filename), &st) < 0) |
c1c4693e | 3787 | #endif /* WINDOWSNT */ |
570d7624 | 3788 | { |
68c45bf0 | 3789 | if (fd >= 0) emacs_close (fd); |
99bc28f4 | 3790 | badopen: |
265a9e55 | 3791 | if (NILP (visit)) |
b1d1b865 | 3792 | report_file_error ("Opening input file", Fcons (orig_filename, Qnil)); |
570d7624 JB |
3793 | st.st_mtime = -1; |
3794 | how_much = 0; | |
0de6b8f4 | 3795 | if (!NILP (Vcoding_system_for_read)) |
22d92d6b | 3796 | Fset (Qbuffer_file_coding_system, Vcoding_system_for_read); |
570d7624 JB |
3797 | goto notfound; |
3798 | } | |
3799 | ||
99bc28f4 | 3800 | #ifdef S_IFREG |
be53b411 JB |
3801 | /* This code will need to be changed in order to work on named |
3802 | pipes, and it's probably just not worth it. So we should at | |
3803 | least signal an error. */ | |
99bc28f4 | 3804 | if (!S_ISREG (st.st_mode)) |
330bfe57 | 3805 | { |
d4b8687b RS |
3806 | not_regular = 1; |
3807 | ||
3808 | if (! NILP (visit)) | |
3809 | goto notfound; | |
3810 | ||
3811 | if (! NILP (replace) || ! NILP (beg) || ! NILP (end)) | |
24b1ddad KS |
3812 | xsignal2 (Qfile_error, |
3813 | build_string ("not a regular file"), orig_filename); | |
330bfe57 | 3814 | } |
be53b411 JB |
3815 | #endif |
3816 | ||
99bc28f4 | 3817 | if (fd < 0) |
d5db4077 | 3818 | if ((fd = emacs_open (SDATA (filename), O_RDONLY, 0)) < 0) |
99bc28f4 KH |
3819 | goto badopen; |
3820 | ||
3821 | /* Replacement should preserve point as it preserves markers. */ | |
3822 | if (!NILP (replace)) | |
3823 | record_unwind_protect (restore_point_unwind, Fpoint_marker ()); | |
3824 | ||
3825 | record_unwind_protect (close_file_unwind, make_number (fd)); | |
3826 | ||
570d7624 | 3827 | /* Supposedly happens on VMS. */ |
11d300db JR |
3828 | /* Can happen on any platform that uses long as type of off_t, but allows |
3829 | file sizes to exceed 2Gb. VMS is no longer officially supported, so | |
3830 | give a message suitable for the latter case. */ | |
d4b8687b | 3831 | if (! not_regular && st.st_size < 0) |
11d300db | 3832 | error ("Maximum buffer size exceeded"); |
be53b411 | 3833 | |
9c856db9 GM |
3834 | /* Prevent redisplay optimizations. */ |
3835 | current_buffer->clip_changed = 1; | |
3836 | ||
9f57b6b4 KH |
3837 | if (!NILP (visit)) |
3838 | { | |
3839 | if (!NILP (beg) || !NILP (end)) | |
3840 | error ("Attempt to visit less than an entire file"); | |
3841 | if (BEG < Z && NILP (replace)) | |
3842 | error ("Cannot do file visiting in a non-empty buffer"); | |
3843 | } | |
7fded690 JB |
3844 | |
3845 | if (!NILP (beg)) | |
b7826503 | 3846 | CHECK_NUMBER (beg); |
7fded690 | 3847 | else |
2acfd7ae | 3848 | XSETFASTINT (beg, 0); |
7fded690 JB |
3849 | |
3850 | if (!NILP (end)) | |
b7826503 | 3851 | CHECK_NUMBER (end); |
7fded690 JB |
3852 | else |
3853 | { | |
d4b8687b RS |
3854 | if (! not_regular) |
3855 | { | |
3856 | XSETINT (end, st.st_size); | |
68c45bf0 PE |
3857 | |
3858 | /* Arithmetic overflow can occur if an Emacs integer cannot | |
3859 | represent the file size, or if the calculations below | |
3860 | overflow. The calculations below double the file size | |
3861 | twice, so check that it can be multiplied by 4 safely. */ | |
3862 | if (XINT (end) != st.st_size | |
77a28bbf | 3863 | || st.st_size > INT_MAX / 4) |
d4b8687b | 3864 | error ("Maximum buffer size exceeded"); |
d21dd12d GM |
3865 | |
3866 | /* The file size returned from stat may be zero, but data | |
3867 | may be readable nonetheless, for example when this is a | |
3868 | file in the /proc filesystem. */ | |
3869 | if (st.st_size == 0) | |
3870 | XSETINT (end, READ_BUF_SIZE); | |
d4b8687b | 3871 | } |
7fded690 JB |
3872 | } |
3873 | ||
356a6224 | 3874 | if (EQ (Vcoding_system_for_read, Qauto_save_coding)) |
5560aecd | 3875 | { |
75421805 | 3876 | coding_system = coding_inherit_eol_type (Qutf_8_emacs, Qunix); |
5560aecd KH |
3877 | setup_coding_system (coding_system, &coding); |
3878 | /* Ensure we set Vlast_coding_system_used. */ | |
3879 | set_coding_system = 1; | |
3880 | } | |
356a6224 | 3881 | else if (BEG < Z) |
f736ffbf KH |
3882 | { |
3883 | /* Decide the coding system to use for reading the file now | |
3884 | because we can't use an optimized method for handling | |
3885 | `coding:' tag if the current buffer is not empty. */ | |
f736ffbf | 3886 | if (!NILP (Vcoding_system_for_read)) |
db327c7e | 3887 | coding_system = Vcoding_system_for_read; |
f736ffbf KH |
3888 | else |
3889 | { | |
3890 | /* Don't try looking inside a file for a coding system | |
3891 | specification if it is not seekable. */ | |
3892 | if (! not_regular && ! NILP (Vset_auto_coding_function)) | |
3893 | { | |
3894 | /* Find a coding system specified in the heading two | |
3895 | lines or in the tailing several lines of the file. | |
3896 | We assume that the 1K-byte and 3K-byte for heading | |
003a7eaa | 3897 | and tailing respectively are sufficient for this |
f736ffbf | 3898 | purpose. */ |
07590973 | 3899 | int nread; |
f736ffbf KH |
3900 | |
3901 | if (st.st_size <= (1024 * 4)) | |
68c45bf0 | 3902 | nread = emacs_read (fd, read_buf, 1024 * 4); |
f736ffbf KH |
3903 | else |
3904 | { | |
68c45bf0 | 3905 | nread = emacs_read (fd, read_buf, 1024); |
f736ffbf KH |
3906 | if (nread >= 0) |
3907 | { | |
3908 | if (lseek (fd, st.st_size - (1024 * 3), 0) < 0) | |
3909 | report_file_error ("Setting file position", | |
3910 | Fcons (orig_filename, Qnil)); | |
68c45bf0 | 3911 | nread += emacs_read (fd, read_buf + nread, 1024 * 3); |
f736ffbf KH |
3912 | } |
3913 | } | |
feb9dc27 | 3914 | |
f736ffbf KH |
3915 | if (nread < 0) |
3916 | error ("IO error reading %s: %s", | |
d5db4077 | 3917 | SDATA (orig_filename), emacs_strerror (errno)); |
f736ffbf KH |
3918 | else if (nread > 0) |
3919 | { | |
f736ffbf | 3920 | struct buffer *prev = current_buffer; |
685fc579 RS |
3921 | Lisp_Object buffer; |
3922 | struct buffer *buf; | |
f736ffbf KH |
3923 | |
3924 | record_unwind_protect (Fset_buffer, Fcurrent_buffer ()); | |
1d92afcd | 3925 | |
685fc579 RS |
3926 | buffer = Fget_buffer_create (build_string (" *code-converting-work*")); |
3927 | buf = XBUFFER (buffer); | |
3928 | ||
29ea8ae9 | 3929 | delete_all_overlays (buf); |
685fc579 RS |
3930 | buf->directory = current_buffer->directory; |
3931 | buf->read_only = Qnil; | |
3932 | buf->filename = Qnil; | |
3933 | buf->undo_list = Qt; | |
29ea8ae9 SM |
3934 | eassert (buf->overlays_before == NULL); |
3935 | eassert (buf->overlays_after == NULL); | |
efdc16c9 | 3936 | |
685fc579 RS |
3937 | set_buffer_internal (buf); |
3938 | Ferase_buffer (); | |
3939 | buf->enable_multibyte_characters = Qnil; | |
3940 | ||
f736ffbf KH |
3941 | insert_1_both (read_buf, nread, nread, 0, 0, 0); |
3942 | TEMP_SET_PT_BOTH (BEG, BEG_BYTE); | |
db327c7e | 3943 | coding_system = call2 (Vset_auto_coding_function, |
8f924df7 | 3944 | filename, make_number (nread)); |
f736ffbf | 3945 | set_buffer_internal (prev); |
efdc16c9 | 3946 | |
f736ffbf KH |
3947 | /* Discard the unwind protect for recovering the |
3948 | current buffer. */ | |
3949 | specpdl_ptr--; | |
3950 | ||
3951 | /* Rewind the file for the actual read done later. */ | |
3952 | if (lseek (fd, 0, 0) < 0) | |
3953 | report_file_error ("Setting file position", | |
3954 | Fcons (orig_filename, Qnil)); | |
3955 | } | |
3956 | } | |
feb9dc27 | 3957 | |
db327c7e | 3958 | if (NILP (coding_system)) |
f736ffbf KH |
3959 | { |
3960 | /* If we have not yet decided a coding system, check | |
3961 | file-coding-system-alist. */ | |
8f924df7 | 3962 | Lisp_Object args[6]; |
f736ffbf KH |
3963 | |
3964 | args[0] = Qinsert_file_contents, args[1] = orig_filename; | |
3965 | args[2] = visit, args[3] = beg, args[4] = end, args[5] = replace; | |
8f924df7 KH |
3966 | coding_system = Ffind_operation_coding_system (6, args); |
3967 | if (CONSP (coding_system)) | |
3968 | coding_system = XCAR (coding_system); | |
f736ffbf KH |
3969 | } |
3970 | } | |
c9e82392 | 3971 | |
db327c7e KH |
3972 | if (NILP (coding_system)) |
3973 | coding_system = Qundecided; | |
3974 | else | |
3975 | CHECK_CODING_SYSTEM (coding_system); | |
c8a6d68a | 3976 | |
db327c7e | 3977 | if (NILP (current_buffer->enable_multibyte_characters)) |
237a6fd2 RS |
3978 | /* We must suppress all character code conversion except for |
3979 | end-of-line conversion. */ | |
db327c7e | 3980 | coding_system = raw_text_coding_system (coding_system); |
54369368 | 3981 | |
db327c7e KH |
3982 | setup_coding_system (coding_system, &coding); |
3983 | /* Ensure we set Vlast_coding_system_used. */ | |
3984 | set_coding_system = 1; | |
f736ffbf | 3985 | } |
6cf71bf1 | 3986 | |
3d0387c0 RS |
3987 | /* If requested, replace the accessible part of the buffer |
3988 | with the file contents. Avoid replacing text at the | |
3989 | beginning or end of the buffer that matches the file contents; | |
3dbcf3f6 RS |
3990 | that preserves markers pointing to the unchanged parts. |
3991 | ||
3992 | Here we implement this feature in an optimized way | |
3993 | for the case where code conversion is NOT needed. | |
3994 | The following if-statement handles the case of conversion | |
727a0b4a RS |
3995 | in a less optimal way. |
3996 | ||
3997 | If the code conversion is "automatic" then we try using this | |
3998 | method and hope for the best. | |
3999 | But if we discover the need for conversion, we give up on this method | |
4000 | and let the following if-statement handle the replace job. */ | |
3dbcf3f6 | 4001 | if (!NILP (replace) |
f736ffbf | 4002 | && BEGV < ZV |
db327c7e KH |
4003 | && (NILP (coding_system) |
4004 | || ! CODING_REQUIRE_DECODING (&coding))) | |
3d0387c0 | 4005 | { |
ec7adf26 RS |
4006 | /* same_at_start and same_at_end count bytes, |
4007 | because file access counts bytes | |
4008 | and BEG and END count bytes. */ | |
4009 | int same_at_start = BEGV_BYTE; | |
4010 | int same_at_end = ZV_BYTE; | |
9c28748f | 4011 | int overlap; |
6fdaa9a0 KH |
4012 | /* There is still a possibility we will find the need to do code |
4013 | conversion. If that happens, we set this variable to 1 to | |
727a0b4a | 4014 | give up on handling REPLACE in the optimized way. */ |
6fdaa9a0 | 4015 | int giveup_match_end = 0; |
9c28748f | 4016 | |
4d2a0879 RS |
4017 | if (XINT (beg) != 0) |
4018 | { | |
4019 | if (lseek (fd, XINT (beg), 0) < 0) | |
4020 | report_file_error ("Setting file position", | |
b1d1b865 | 4021 | Fcons (orig_filename, Qnil)); |
4d2a0879 RS |
4022 | } |
4023 | ||
3d0387c0 RS |
4024 | immediate_quit = 1; |
4025 | QUIT; | |
4026 | /* Count how many chars at the start of the file | |
4027 | match the text at the beginning of the buffer. */ | |
4028 | while (1) | |
4029 | { | |
4030 | int nread, bufpos; | |
4031 | ||
68c45bf0 | 4032 | nread = emacs_read (fd, buffer, sizeof buffer); |
3d0387c0 RS |
4033 | if (nread < 0) |
4034 | error ("IO error reading %s: %s", | |
d5db4077 | 4035 | SDATA (orig_filename), emacs_strerror (errno)); |
3d0387c0 RS |
4036 | else if (nread == 0) |
4037 | break; | |
6fdaa9a0 | 4038 | |
db327c7e | 4039 | if (CODING_REQUIRE_DETECTION (&coding)) |
727a0b4a | 4040 | { |
5b359650 | 4041 | coding_system = detect_coding_system (buffer, nread, nread, 1, 0, |
db327c7e KH |
4042 | coding_system); |
4043 | setup_coding_system (coding_system, &coding); | |
727a0b4a RS |
4044 | } |
4045 | ||
db327c7e KH |
4046 | if (CODING_REQUIRE_DECODING (&coding)) |
4047 | /* We found that the file should be decoded somehow. | |
727a0b4a RS |
4048 | Let's give up here. */ |
4049 | { | |
4050 | giveup_match_end = 1; | |
4051 | break; | |
4052 | } | |
4053 | ||
3d0387c0 | 4054 | bufpos = 0; |
ec7adf26 | 4055 | while (bufpos < nread && same_at_start < ZV_BYTE |
6fdaa9a0 | 4056 | && FETCH_BYTE (same_at_start) == buffer[bufpos]) |
3d0387c0 RS |
4057 | same_at_start++, bufpos++; |
4058 | /* If we found a discrepancy, stop the scan. | |
8e6208c5 | 4059 | Otherwise loop around and scan the next bufferful. */ |
3d0387c0 RS |
4060 | if (bufpos != nread) |
4061 | break; | |
4062 | } | |
4063 | immediate_quit = 0; | |
4064 | /* If the file matches the buffer completely, | |
4065 | there's no need to replace anything. */ | |
ec7adf26 | 4066 | if (same_at_start - BEGV_BYTE == XINT (end)) |
3d0387c0 | 4067 | { |
68c45bf0 | 4068 | emacs_close (fd); |
a1d2b64a | 4069 | specpdl_ptr--; |
1051b3b3 | 4070 | /* Truncate the buffer to the size of the file. */ |
7dae4502 | 4071 | del_range_1 (same_at_start, same_at_end, 0, 0); |
3d0387c0 RS |
4072 | goto handled; |
4073 | } | |
4074 | immediate_quit = 1; | |
4075 | QUIT; | |
4076 | /* Count how many chars at the end of the file | |
6fdaa9a0 KH |
4077 | match the text at the end of the buffer. But, if we have |
4078 | already found that decoding is necessary, don't waste time. */ | |
4079 | while (!giveup_match_end) | |
3d0387c0 RS |
4080 | { |
4081 | int total_read, nread, bufpos, curpos, trial; | |
4082 | ||
4083 | /* At what file position are we now scanning? */ | |
ec7adf26 | 4084 | curpos = XINT (end) - (ZV_BYTE - same_at_end); |
fc81fa9e KH |
4085 | /* If the entire file matches the buffer tail, stop the scan. */ |
4086 | if (curpos == 0) | |
4087 | break; | |
3d0387c0 RS |
4088 | /* How much can we scan in the next step? */ |
4089 | trial = min (curpos, sizeof buffer); | |
4090 | if (lseek (fd, curpos - trial, 0) < 0) | |
4091 | report_file_error ("Setting file position", | |
b1d1b865 | 4092 | Fcons (orig_filename, Qnil)); |
3d0387c0 | 4093 | |
b02439c8 | 4094 | total_read = nread = 0; |
3d0387c0 RS |
4095 | while (total_read < trial) |
4096 | { | |
68c45bf0 | 4097 | nread = emacs_read (fd, buffer + total_read, trial - total_read); |
2bd2273e | 4098 | if (nread < 0) |
3d0387c0 | 4099 | error ("IO error reading %s: %s", |
d5db4077 | 4100 | SDATA (orig_filename), emacs_strerror (errno)); |
2bd2273e GM |
4101 | else if (nread == 0) |
4102 | break; | |
3d0387c0 RS |
4103 | total_read += nread; |
4104 | } | |
efdc16c9 | 4105 | |
8e6208c5 | 4106 | /* Scan this bufferful from the end, comparing with |
3d0387c0 RS |
4107 | the Emacs buffer. */ |
4108 | bufpos = total_read; | |
efdc16c9 | 4109 | |
3d0387c0 RS |
4110 | /* Compare with same_at_start to avoid counting some buffer text |
4111 | as matching both at the file's beginning and at the end. */ | |
4112 | while (bufpos > 0 && same_at_end > same_at_start | |
6fdaa9a0 | 4113 | && FETCH_BYTE (same_at_end - 1) == buffer[bufpos - 1]) |
3d0387c0 | 4114 | same_at_end--, bufpos--; |
727a0b4a | 4115 | |
3d0387c0 | 4116 | /* If we found a discrepancy, stop the scan. |
8e6208c5 | 4117 | Otherwise loop around and scan the preceding bufferful. */ |
3d0387c0 | 4118 | if (bufpos != 0) |
727a0b4a RS |
4119 | { |
4120 | /* If this discrepancy is because of code conversion, | |
4121 | we cannot use this method; giveup and try the other. */ | |
4122 | if (same_at_end > same_at_start | |
4123 | && FETCH_BYTE (same_at_end - 1) >= 0200 | |
71312b68 | 4124 | && ! NILP (current_buffer->enable_multibyte_characters) |
c8a6d68a | 4125 | && (CODING_MAY_REQUIRE_DECODING (&coding))) |
727a0b4a RS |
4126 | giveup_match_end = 1; |
4127 | break; | |
4128 | } | |
b02439c8 GM |
4129 | |
4130 | if (nread == 0) | |
4131 | break; | |
3d0387c0 RS |
4132 | } |
4133 | immediate_quit = 0; | |
9c28748f | 4134 | |
727a0b4a RS |
4135 | if (! giveup_match_end) |
4136 | { | |
ec7adf26 RS |
4137 | int temp; |
4138 | ||
727a0b4a | 4139 | /* We win! We can handle REPLACE the optimized way. */ |
9c28748f | 4140 | |
20f6783d RS |
4141 | /* Extend the start of non-matching text area to multibyte |
4142 | character boundary. */ | |
4143 | if (! NILP (current_buffer->enable_multibyte_characters)) | |
4144 | while (same_at_start > BEGV_BYTE | |
4145 | && ! CHAR_HEAD_P (FETCH_BYTE (same_at_start))) | |
4146 | same_at_start--; | |
4147 | ||
4148 | /* Extend the end of non-matching text area to multibyte | |
71312b68 RS |
4149 | character boundary. */ |
4150 | if (! NILP (current_buffer->enable_multibyte_characters)) | |
ec7adf26 RS |
4151 | while (same_at_end < ZV_BYTE |
4152 | && ! CHAR_HEAD_P (FETCH_BYTE (same_at_end))) | |
71312b68 RS |
4153 | same_at_end++; |
4154 | ||
727a0b4a | 4155 | /* Don't try to reuse the same piece of text twice. */ |
ec7adf26 RS |
4156 | overlap = (same_at_start - BEGV_BYTE |
4157 | - (same_at_end + st.st_size - ZV)); | |
727a0b4a RS |
4158 | if (overlap > 0) |
4159 | same_at_end += overlap; | |
9c28748f | 4160 | |
727a0b4a | 4161 | /* Arrange to read only the nonmatching middle part of the file. */ |
ec7adf26 RS |
4162 | XSETFASTINT (beg, XINT (beg) + (same_at_start - BEGV_BYTE)); |
4163 | XSETFASTINT (end, XINT (end) - (ZV_BYTE - same_at_end)); | |
3dbcf3f6 | 4164 | |
ec7adf26 | 4165 | del_range_byte (same_at_start, same_at_end, 0); |
727a0b4a | 4166 | /* Insert from the file at the proper position. */ |
ec7adf26 RS |
4167 | temp = BYTE_TO_CHAR (same_at_start); |
4168 | SET_PT_BOTH (temp, same_at_start); | |
727a0b4a RS |
4169 | |
4170 | /* If display currently starts at beginning of line, | |
4171 | keep it that way. */ | |
4172 | if (XBUFFER (XWINDOW (selected_window)->buffer) == current_buffer) | |
4173 | XWINDOW (selected_window)->start_at_line_beg = Fbolp (); | |
4174 | ||
4175 | replace_handled = 1; | |
4176 | } | |
3dbcf3f6 RS |
4177 | } |
4178 | ||
4179 | /* If requested, replace the accessible part of the buffer | |
4180 | with the file contents. Avoid replacing text at the | |
4181 | beginning or end of the buffer that matches the file contents; | |
4182 | that preserves markers pointing to the unchanged parts. | |
4183 | ||
4184 | Here we implement this feature for the case where code conversion | |
4185 | is needed, in a simple way that needs a lot of memory. | |
4186 | The preceding if-statement handles the case of no conversion | |
4187 | in a more optimized way. */ | |
f736ffbf | 4188 | if (!NILP (replace) && ! replace_handled && BEGV < ZV) |
3dbcf3f6 | 4189 | { |
13818c30 SM |
4190 | EMACS_INT same_at_start = BEGV_BYTE; |
4191 | EMACS_INT same_at_end = ZV_BYTE; | |
4192 | EMACS_INT same_at_start_charpos; | |
4193 | EMACS_INT inserted_chars; | |
4194 | EMACS_INT overlap; | |
4195 | EMACS_INT bufpos; | |
db327c7e | 4196 | unsigned char *decoded; |
ec7adf26 | 4197 | int temp; |
8f924df7 | 4198 | int this_count = SPECPDL_INDEX (); |
59c94f03 | 4199 | int multibyte = ! NILP (current_buffer->enable_multibyte_characters); |
5b359650 | 4200 | Lisp_Object conversion_buffer; |
db327c7e | 4201 | |
5b359650 | 4202 | conversion_buffer = code_conversion_save (1, multibyte); |
3dbcf3f6 RS |
4203 | |
4204 | /* First read the whole file, performing code conversion into | |
4205 | CONVERSION_BUFFER. */ | |
4206 | ||
727a0b4a | 4207 | if (lseek (fd, XINT (beg), 0) < 0) |
8f924df7 KH |
4208 | report_file_error ("Setting file position", |
4209 | Fcons (orig_filename, Qnil)); | |
727a0b4a | 4210 | |
3dbcf3f6 RS |
4211 | total = st.st_size; /* Total bytes in the file. */ |
4212 | how_much = 0; /* Bytes read from file so far. */ | |
4213 | inserted = 0; /* Bytes put into CONVERSION_BUFFER so far. */ | |
4214 | unprocessed = 0; /* Bytes not processed in previous loop. */ | |
4215 | ||
2ba48777 | 4216 | GCPRO1 (conversion_buffer); |
3dbcf3f6 RS |
4217 | while (how_much < total) |
4218 | { | |
db327c7e KH |
4219 | /* We read one bunch by one (READ_BUF_SIZE bytes) to allow |
4220 | quitting while reading a huge while. */ | |
3dbcf3f6 RS |
4221 | /* try is reserved in some compilers (Microsoft C) */ |
4222 | int trytry = min (total - how_much, READ_BUF_SIZE - unprocessed); | |
3dbcf3f6 RS |
4223 | int this; |
4224 | ||
4225 | /* Allow quitting out of the actual I/O. */ | |
4226 | immediate_quit = 1; | |
4227 | QUIT; | |
db327c7e | 4228 | this = emacs_read (fd, read_buf + unprocessed, trytry); |
3dbcf3f6 RS |
4229 | immediate_quit = 0; |
4230 | ||
db327c7e | 4231 | if (this <= 0) |
3dbcf3f6 | 4232 | { |
db327c7e KH |
4233 | if (this < 0) |
4234 | how_much = this; | |
3dbcf3f6 RS |
4235 | break; |
4236 | } | |
4237 | ||
4238 | how_much += this; | |
4239 | ||
bf1c0f27 SM |
4240 | BUF_TEMP_SET_PT (XBUFFER (conversion_buffer), |
4241 | BUF_Z (XBUFFER (conversion_buffer))); | |
db327c7e KH |
4242 | decode_coding_c_string (&coding, read_buf, unprocessed + this, |
4243 | conversion_buffer); | |
4244 | unprocessed = coding.carryover_bytes; | |
4245 | if (coding.carryover_bytes > 0) | |
4246 | bcopy (coding.carryover, read_buf, unprocessed); | |
3dbcf3f6 | 4247 | } |
2ba48777 | 4248 | UNGCPRO; |
db327c7e | 4249 | emacs_close (fd); |
3dbcf3f6 | 4250 | |
db327c7e KH |
4251 | /* At this point, HOW_MUCH should equal TOTAL, or should be <= 0 |
4252 | if we couldn't read the file. */ | |
3dbcf3f6 RS |
4253 | |
4254 | if (how_much < 0) | |
4ed925c6 MB |
4255 | error ("IO error reading %s: %s", |
4256 | SDATA (orig_filename), emacs_strerror (errno)); | |
3dbcf3f6 | 4257 | |
db327c7e KH |
4258 | if (unprocessed > 0) |
4259 | { | |
4260 | coding.mode |= CODING_MODE_LAST_BLOCK; | |
4261 | decode_coding_c_string (&coding, read_buf, unprocessed, | |
4262 | conversion_buffer); | |
4263 | coding.mode &= ~CODING_MODE_LAST_BLOCK; | |
4264 | } | |
4265 | ||
4266 | decoded = BUF_BEG_ADDR (XBUFFER (conversion_buffer)); | |
50342b35 KH |
4267 | inserted = (BUF_Z_BYTE (XBUFFER (conversion_buffer)) |
4268 | - BUF_BEG_BYTE (XBUFFER (conversion_buffer))); | |
db327c7e KH |
4269 | |
4270 | /* Compare the beginning of the converted string with the buffer | |
4271 | text. */ | |
3dbcf3f6 RS |
4272 | |
4273 | bufpos = 0; | |
4274 | while (bufpos < inserted && same_at_start < same_at_end | |
db327c7e | 4275 | && FETCH_BYTE (same_at_start) == decoded[bufpos]) |
3dbcf3f6 RS |
4276 | same_at_start++, bufpos++; |
4277 | ||
db327c7e | 4278 | /* If the file matches the head of buffer completely, |
3dbcf3f6 RS |
4279 | there's no need to replace anything. */ |
4280 | ||
4281 | if (bufpos == inserted) | |
4282 | { | |
3dbcf3f6 RS |
4283 | specpdl_ptr--; |
4284 | /* Truncate the buffer to the size of the file. */ | |
18a9f8d9 SM |
4285 | if (same_at_start == same_at_end) |
4286 | nochange = 1; | |
4287 | else | |
4288 | del_range_byte (same_at_start, same_at_end, 0); | |
427f5aab | 4289 | inserted = 0; |
e8553dd1 KH |
4290 | |
4291 | unbind_to (this_count, Qnil); | |
3dbcf3f6 RS |
4292 | goto handled; |
4293 | } | |
4294 | ||
db327c7e KH |
4295 | /* Extend the start of non-matching text area to the previous |
4296 | multibyte character boundary. */ | |
20f6783d RS |
4297 | if (! NILP (current_buffer->enable_multibyte_characters)) |
4298 | while (same_at_start > BEGV_BYTE | |
4299 | && ! CHAR_HEAD_P (FETCH_BYTE (same_at_start))) | |
4300 | same_at_start--; | |
4301 | ||
3dbcf3f6 RS |
4302 | /* Scan this bufferful from the end, comparing with |
4303 | the Emacs buffer. */ | |
4304 | bufpos = inserted; | |
4305 | ||
4306 | /* Compare with same_at_start to avoid counting some buffer text | |
4307 | as matching both at the file's beginning and at the end. */ | |
4308 | while (bufpos > 0 && same_at_end > same_at_start | |
db327c7e | 4309 | && FETCH_BYTE (same_at_end - 1) == decoded[bufpos - 1]) |
3dbcf3f6 RS |
4310 | same_at_end--, bufpos--; |
4311 | ||
db327c7e KH |
4312 | /* Extend the end of non-matching text area to the next |
4313 | multibyte character boundary. */ | |
20f6783d RS |
4314 | if (! NILP (current_buffer->enable_multibyte_characters)) |
4315 | while (same_at_end < ZV_BYTE | |
4316 | && ! CHAR_HEAD_P (FETCH_BYTE (same_at_end))) | |
4317 | same_at_end++; | |
4318 | ||
3dbcf3f6 | 4319 | /* Don't try to reuse the same piece of text twice. */ |
ec7adf26 | 4320 | overlap = same_at_start - BEGV_BYTE - (same_at_end + inserted - ZV_BYTE); |
3dbcf3f6 RS |
4321 | if (overlap > 0) |
4322 | same_at_end += overlap; | |
4323 | ||
727a0b4a RS |
4324 | /* If display currently starts at beginning of line, |
4325 | keep it that way. */ | |
4326 | if (XBUFFER (XWINDOW (selected_window)->buffer) == current_buffer) | |
4327 | XWINDOW (selected_window)->start_at_line_beg = Fbolp (); | |
4328 | ||
3dbcf3f6 RS |
4329 | /* Replace the chars that we need to replace, |
4330 | and update INSERTED to equal the number of bytes | |
db327c7e | 4331 | we are taking from the decoded string. */ |
4b70e2c9 | 4332 | inserted -= (ZV_BYTE - same_at_end) + (same_at_start - BEGV_BYTE); |
427f5aab | 4333 | |
643c73b9 | 4334 | if (same_at_end != same_at_start) |
427f5aab KH |
4335 | { |
4336 | del_range_byte (same_at_start, same_at_end, 0); | |
4337 | temp = GPT; | |
4338 | same_at_start = GPT_BYTE; | |
4339 | } | |
643c73b9 RS |
4340 | else |
4341 | { | |
643c73b9 | 4342 | temp = BYTE_TO_CHAR (same_at_start); |
643c73b9 | 4343 | } |
427f5aab KH |
4344 | /* Insert from the file at the proper position. */ |
4345 | SET_PT_BOTH (temp, same_at_start); | |
50342b35 KH |
4346 | same_at_start_charpos |
4347 | = buf_bytepos_to_charpos (XBUFFER (conversion_buffer), | |
7f5d2c72 SM |
4348 | same_at_start - BEGV_BYTE |
4349 | + BUF_BEG_BYTE (XBUFFER (conversion_buffer))); | |
50342b35 KH |
4350 | inserted_chars |
4351 | = (buf_bytepos_to_charpos (XBUFFER (conversion_buffer), | |
7f5d2c72 SM |
4352 | same_at_start + inserted - BEGV_BYTE |
4353 | + BUF_BEG_BYTE (XBUFFER (conversion_buffer))) | |
50342b35 | 4354 | - same_at_start_charpos); |
d07af40d KH |
4355 | /* This binding is to avoid ask-user-about-supersession-threat |
4356 | being called in insert_from_buffer (via in | |
4357 | prepare_to_modify_buffer). */ | |
4358 | specbind (intern ("buffer-file-name"), Qnil); | |
db327c7e | 4359 | insert_from_buffer (XBUFFER (conversion_buffer), |
50342b35 | 4360 | same_at_start_charpos, inserted_chars, 0); |
427f5aab KH |
4361 | /* Set `inserted' to the number of inserted characters. */ |
4362 | inserted = PT - temp; | |
77343e1d KH |
4363 | /* Set point before the inserted characters. */ |
4364 | SET_PT_BOTH (temp, same_at_start); | |
3dbcf3f6 | 4365 | |
db327c7e | 4366 | unbind_to (this_count, Qnil); |
3dbcf3f6 | 4367 | |
3dbcf3f6 | 4368 | goto handled; |
3d0387c0 RS |
4369 | } |
4370 | ||
d4b8687b RS |
4371 | if (! not_regular) |
4372 | { | |
4373 | register Lisp_Object temp; | |
7fded690 | 4374 | |
d4b8687b | 4375 | total = XINT (end) - XINT (beg); |
570d7624 | 4376 | |
d4b8687b RS |
4377 | /* Make sure point-max won't overflow after this insertion. */ |
4378 | XSETINT (temp, total); | |
4379 | if (total != XINT (temp)) | |
4380 | error ("Maximum buffer size exceeded"); | |
4381 | } | |
4382 | else | |
4383 | /* For a special file, all we can do is guess. */ | |
4384 | total = READ_BUF_SIZE; | |
570d7624 | 4385 | |
68780e2a RS |
4386 | if (NILP (visit) && inserted > 0) |
4387 | { | |
4388 | #ifdef CLASH_DETECTION | |
4389 | if (!NILP (current_buffer->file_truename) | |
4390 | /* Make binding buffer-file-name to nil effective. */ | |
4391 | && !NILP (current_buffer->filename) | |
4392 | && SAVE_MODIFF >= MODIFF) | |
4393 | we_locked_file = 1; | |
4394 | #endif /* CLASH_DETECTION */ | |
4395 | prepare_to_modify_buffer (GPT, GPT, NULL); | |
4396 | } | |
570d7624 | 4397 | |
7fe52289 | 4398 | move_gap (PT); |
7fded690 JB |
4399 | if (GAP_SIZE < total) |
4400 | make_gap (total - GAP_SIZE); | |
4401 | ||
a1d2b64a | 4402 | if (XINT (beg) != 0 || !NILP (replace)) |
7fded690 JB |
4403 | { |
4404 | if (lseek (fd, XINT (beg), 0) < 0) | |
b1d1b865 RS |
4405 | report_file_error ("Setting file position", |
4406 | Fcons (orig_filename, Qnil)); | |
7fded690 JB |
4407 | } |
4408 | ||
6fdaa9a0 | 4409 | /* In the following loop, HOW_MUCH contains the total bytes read so |
c8a6d68a KH |
4410 | far for a regular file, and not changed for a special file. But, |
4411 | before exiting the loop, it is set to a negative value if I/O | |
4412 | error occurs. */ | |
a1d2b64a | 4413 | how_much = 0; |
efdc16c9 | 4414 | |
6fdaa9a0 KH |
4415 | /* Total bytes inserted. */ |
4416 | inserted = 0; | |
efdc16c9 | 4417 | |
c8a6d68a | 4418 | /* Here, we don't do code conversion in the loop. It is done by |
db327c7e | 4419 | decode_coding_gap after all data are read into the buffer. */ |
1b978129 GM |
4420 | { |
4421 | int gap_size = GAP_SIZE; | |
efdc16c9 | 4422 | |
1b978129 GM |
4423 | while (how_much < total) |
4424 | { | |
5e570b75 | 4425 | /* try is reserved in some compilers (Microsoft C) */ |
1b978129 GM |
4426 | int trytry = min (total - how_much, READ_BUF_SIZE); |
4427 | int this; | |
570d7624 | 4428 | |
1b978129 GM |
4429 | if (not_regular) |
4430 | { | |
4431 | Lisp_Object val; | |
570d7624 | 4432 | |
1b978129 GM |
4433 | /* Maybe make more room. */ |
4434 | if (gap_size < trytry) | |
4435 | { | |
4436 | make_gap (total - gap_size); | |
4437 | gap_size = GAP_SIZE; | |
4438 | } | |
4439 | ||
4440 | /* Read from the file, capturing `quit'. When an | |
4441 | error occurs, end the loop, and arrange for a quit | |
4442 | to be signaled after decoding the text we read. */ | |
4443 | non_regular_fd = fd; | |
4444 | non_regular_inserted = inserted; | |
4445 | non_regular_nbytes = trytry; | |
4446 | val = internal_condition_case_1 (read_non_regular, Qnil, Qerror, | |
4447 | read_non_regular_quit); | |
4448 | if (NILP (val)) | |
4449 | { | |
4450 | read_quit = 1; | |
4451 | break; | |
4452 | } | |
4453 | ||
4454 | this = XINT (val); | |
4455 | } | |
4456 | else | |
4457 | { | |
4458 | /* Allow quitting out of the actual I/O. We don't make text | |
4459 | part of the buffer until all the reading is done, so a C-g | |
4460 | here doesn't do any harm. */ | |
4461 | immediate_quit = 1; | |
4462 | QUIT; | |
28c3eb5a | 4463 | this = emacs_read (fd, BEG_ADDR + PT_BYTE - BEG_BYTE + inserted, trytry); |
1b978129 GM |
4464 | immediate_quit = 0; |
4465 | } | |
efdc16c9 | 4466 | |
1b978129 GM |
4467 | if (this <= 0) |
4468 | { | |
4469 | how_much = this; | |
4470 | break; | |
4471 | } | |
4472 | ||
4473 | gap_size -= this; | |
4474 | ||
4475 | /* For a regular file, where TOTAL is the real size, | |
4476 | count HOW_MUCH to compare with it. | |
4477 | For a special file, where TOTAL is just a buffer size, | |
4478 | so don't bother counting in HOW_MUCH. | |
4479 | (INSERTED is where we count the number of characters inserted.) */ | |
4480 | if (! not_regular) | |
4481 | how_much += this; | |
4482 | inserted += this; | |
4483 | } | |
4484 | } | |
4485 | ||
68780e2a RS |
4486 | /* Now we have read all the file data into the gap. |
4487 | If it was empty, undo marking the buffer modified. */ | |
4488 | ||
4489 | if (inserted == 0) | |
4490 | { | |
6840d350 | 4491 | #ifdef CLASH_DETECTION |
68780e2a RS |
4492 | if (we_locked_file) |
4493 | unlock_file (current_buffer->file_truename); | |
6840d350 | 4494 | #endif |
68780e2a RS |
4495 | Vdeactivate_mark = old_Vdeactivate_mark; |
4496 | } | |
83c1cf6d RS |
4497 | else |
4498 | Vdeactivate_mark = Qt; | |
68780e2a | 4499 | |
1b978129 GM |
4500 | /* Make the text read part of the buffer. */ |
4501 | GAP_SIZE -= inserted; | |
4502 | GPT += inserted; | |
4503 | GPT_BYTE += inserted; | |
4504 | ZV += inserted; | |
4505 | ZV_BYTE += inserted; | |
4506 | Z += inserted; | |
4507 | Z_BYTE += inserted; | |
6fdaa9a0 | 4508 | |
c8a6d68a KH |
4509 | if (GAP_SIZE > 0) |
4510 | /* Put an anchor to ensure multi-byte form ends at gap. */ | |
4511 | *GPT_ADDR = 0; | |
d4b8687b | 4512 | |
68c45bf0 | 4513 | emacs_close (fd); |
6fdaa9a0 | 4514 | |
c8a6d68a KH |
4515 | /* Discard the unwind protect for closing the file. */ |
4516 | specpdl_ptr--; | |
6fdaa9a0 | 4517 | |
c8a6d68a KH |
4518 | if (how_much < 0) |
4519 | error ("IO error reading %s: %s", | |
d5db4077 | 4520 | SDATA (orig_filename), emacs_strerror (errno)); |
ec7adf26 | 4521 | |
f8569325 DL |
4522 | notfound: |
4523 | ||
db327c7e | 4524 | if (NILP (coding_system)) |
c8a6d68a | 4525 | { |
2df42e09 | 4526 | /* The coding system is not yet decided. Decide it by an |
dfe35e7b RS |
4527 | optimized method for handling `coding:' tag. |
4528 | ||
4529 | Note that we can get here only if the buffer was empty | |
4530 | before the insertion. */ | |
f736ffbf | 4531 | |
2df42e09 | 4532 | if (!NILP (Vcoding_system_for_read)) |
db327c7e | 4533 | coding_system = Vcoding_system_for_read; |
2df42e09 KH |
4534 | else |
4535 | { | |
98a7d268 KH |
4536 | /* Since we are sure that the current buffer was empty |
4537 | before the insertion, we can toggle | |
4538 | enable-multibyte-characters directly here without taking | |
9a7f80aa KH |
4539 | care of marker adjustment. By this way, we can run Lisp |
4540 | program safely before decoding the inserted text. */ | |
98a7d268 | 4541 | Lisp_Object unwind_data; |
9a7f80aa | 4542 | int count = SPECPDL_INDEX (); |
2df42e09 | 4543 | |
98a7d268 KH |
4544 | unwind_data = Fcons (current_buffer->enable_multibyte_characters, |
4545 | Fcons (current_buffer->undo_list, | |
4546 | Fcurrent_buffer ())); | |
2b89769e | 4547 | current_buffer->enable_multibyte_characters = Qnil; |
98a7d268 KH |
4548 | current_buffer->undo_list = Qt; |
4549 | record_unwind_protect (decide_coding_unwind, unwind_data); | |
4550 | ||
4551 | if (inserted > 0 && ! NILP (Vset_auto_coding_function)) | |
4552 | { | |
db327c7e | 4553 | coding_system = call2 (Vset_auto_coding_function, |
8f924df7 | 4554 | filename, make_number (inserted)); |
2df42e09 | 4555 | } |
f736ffbf | 4556 | |
db327c7e | 4557 | if (NILP (coding_system)) |
2df42e09 KH |
4558 | { |
4559 | /* If the coding system is not yet decided, check | |
4560 | file-coding-system-alist. */ | |
8f924df7 | 4561 | Lisp_Object args[6]; |
f736ffbf | 4562 | |
2df42e09 KH |
4563 | args[0] = Qinsert_file_contents, args[1] = orig_filename; |
4564 | args[2] = visit, args[3] = beg, args[4] = end, args[5] = Qnil; | |
8f924df7 KH |
4565 | coding_system = Ffind_operation_coding_system (6, args); |
4566 | if (CONSP (coding_system)) | |
4567 | coding_system = XCAR (coding_system); | |
f736ffbf | 4568 | } |
98a7d268 KH |
4569 | unbind_to (count, Qnil); |
4570 | inserted = Z_BYTE - BEG_BYTE; | |
2df42e09 | 4571 | } |
f736ffbf | 4572 | |
db327c7e KH |
4573 | if (NILP (coding_system)) |
4574 | coding_system = Qundecided; | |
4575 | else | |
4576 | CHECK_CODING_SYSTEM (coding_system); | |
f736ffbf | 4577 | |
db327c7e | 4578 | if (NILP (current_buffer->enable_multibyte_characters)) |
237a6fd2 | 4579 | /* We must suppress all character code conversion except for |
2df42e09 | 4580 | end-of-line conversion. */ |
db327c7e | 4581 | coding_system = raw_text_coding_system (coding_system); |
db327c7e KH |
4582 | setup_coding_system (coding_system, &coding); |
4583 | /* Ensure we set Vlast_coding_system_used. */ | |
4584 | set_coding_system = 1; | |
2df42e09 | 4585 | } |
f736ffbf | 4586 | |
db327c7e | 4587 | if (!NILP (visit)) |
8c3b9441 | 4588 | { |
db327c7e | 4589 | /* When we visit a file by raw-text, we change the buffer to |
9a7f80aa | 4590 | unibyte. */ |
db327c7e KH |
4591 | if (CODING_FOR_UNIBYTE (&coding) |
4592 | /* Can't do this if part of the buffer might be preserved. */ | |
4593 | && NILP (replace)) | |
4594 | /* Visiting a file with these coding system makes the buffer | |
4595 | unibyte. */ | |
4596 | current_buffer->enable_multibyte_characters = Qnil; | |
8c3b9441 KH |
4597 | } |
4598 | ||
8f924df7 | 4599 | coding.dst_multibyte = ! NILP (current_buffer->enable_multibyte_characters); |
5b359650 | 4600 | if (CODING_MAY_REQUIRE_DECODING (&coding) |
1c157f8d | 4601 | && (inserted > 0 || CODING_REQUIRE_FLUSHING (&coding))) |
2df42e09 | 4602 | { |
db327c7e KH |
4603 | move_gap_both (PT, PT_BYTE); |
4604 | GAP_SIZE += inserted; | |
4605 | ZV_BYTE -= inserted; | |
4606 | Z_BYTE -= inserted; | |
4607 | ZV -= inserted; | |
4608 | Z -= inserted; | |
4609 | decode_coding_gap (&coding, inserted, inserted); | |
4610 | inserted = coding.produced_char; | |
5b359650 | 4611 | coding_system = CODING_ID_NAME (coding.id); |
2df42e09 | 4612 | } |
db327c7e KH |
4613 | else if (inserted > 0) |
4614 | adjust_after_insert (PT, PT_BYTE, PT + inserted, PT_BYTE + inserted, | |
4615 | inserted); | |
570d7624 | 4616 | |
cf6d2357 RS |
4617 | /* Now INSERTED is measured in characters. */ |
4618 | ||
04e6f79c | 4619 | #ifdef DOS_NT |
2df42e09 KH |
4620 | /* Use the conversion type to determine buffer-file-type |
4621 | (find-buffer-file-type is now used to help determine the | |
4622 | conversion). */ | |
652a7e95 | 4623 | if ((VECTORP (CODING_ID_EOL_TYPE (coding.id)) |
f7ce9c0c | 4624 | || EQ (CODING_ID_EOL_TYPE (coding.id), Qunix)) |
2df42e09 KH |
4625 | && ! CODING_REQUIRE_DECODING (&coding)) |
4626 | current_buffer->buffer_file_type = Qt; | |
4627 | else | |
4628 | current_buffer->buffer_file_type = Qnil; | |
04e6f79c | 4629 | #endif |
570d7624 | 4630 | |
32f4334d | 4631 | handled: |
570d7624 | 4632 | |
265a9e55 | 4633 | if (!NILP (visit)) |
570d7624 | 4634 | { |
18a9f8d9 | 4635 | if (!EQ (current_buffer->undo_list, Qt) && !nochange) |
cfadd376 | 4636 | current_buffer->undo_list = Qnil; |
62bcf009 | 4637 | |
a7e82472 RS |
4638 | if (NILP (handler)) |
4639 | { | |
4640 | current_buffer->modtime = st.st_mtime; | |
b1d1b865 | 4641 | current_buffer->filename = orig_filename; |
a7e82472 | 4642 | } |
62bcf009 | 4643 | |
95385625 | 4644 | SAVE_MODIFF = MODIFF; |
570d7624 | 4645 | current_buffer->auto_save_modified = MODIFF; |
2acfd7ae | 4646 | XSETFASTINT (current_buffer->save_length, Z - BEG); |
570d7624 | 4647 | #ifdef CLASH_DETECTION |
32f4334d RS |
4648 | if (NILP (handler)) |
4649 | { | |
f471f4c2 RS |
4650 | if (!NILP (current_buffer->file_truename)) |
4651 | unlock_file (current_buffer->file_truename); | |
32f4334d RS |
4652 | unlock_file (filename); |
4653 | } | |
570d7624 | 4654 | #endif /* CLASH_DETECTION */ |
330bfe57 | 4655 | if (not_regular) |
24b1ddad KS |
4656 | xsignal2 (Qfile_error, |
4657 | build_string ("not a regular file"), orig_filename); | |
570d7624 JB |
4658 | } |
4659 | ||
b6426b03 | 4660 | if (set_coding_system) |
8f924df7 | 4661 | Vlast_coding_system_used = coding_system; |
b6426b03 | 4662 | |
2080470e | 4663 | if (! NILP (Ffboundp (Qafter_insert_file_set_coding))) |
b6426b03 | 4664 | { |
37a3c774 KH |
4665 | insval = call2 (Qafter_insert_file_set_coding, make_number (inserted), |
4666 | visit); | |
b6426b03 KH |
4667 | if (! NILP (insval)) |
4668 | { | |
4669 | CHECK_NUMBER (insval); | |
4670 | inserted = XFASTINT (insval); | |
4671 | } | |
4672 | } | |
4673 | ||
0d420e88 | 4674 | /* Decode file format */ |
c8a6d68a | 4675 | if (inserted > 0) |
0d420e88 | 4676 | { |
6f2528d8 MR |
4677 | /* Don't run point motion or modification hooks when decoding. */ |
4678 | int count = SPECPDL_INDEX (); | |
4679 | specbind (Qinhibit_point_motion_hooks, Qt); | |
4680 | specbind (Qinhibit_modification_hooks, Qt); | |
4681 | ||
4682 | /* Save old undo list and don't record undo for decoding. */ | |
4683 | old_undo = current_buffer->undo_list; | |
4684 | current_buffer->undo_list = Qt; | |
efdc16c9 | 4685 | |
6f2528d8 | 4686 | if (NILP (replace)) |
ed8e506f | 4687 | { |
6f2528d8 MR |
4688 | insval = call3 (Qformat_decode, |
4689 | Qnil, make_number (inserted), visit); | |
4690 | CHECK_NUMBER (insval); | |
4691 | inserted = XFASTINT (insval); | |
4692 | } | |
4693 | else | |
4694 | { | |
4695 | /* If REPLACE is non-nil and we succeeded in not replacing the | |
4696 | beginning or end of the buffer text with the file's contents, | |
4697 | call format-decode with `point' positioned at the beginning of | |
4698 | the buffer and `inserted' equalling the number of characters | |
4699 | in the buffer. Otherwise, format-decode might fail to | |
4700 | correctly analyze the beginning or end of the buffer. Hence | |
4701 | we temporarily save `point' and `inserted' here and restore | |
4702 | `point' iff format-decode did not insert or delete any text. | |
4703 | Otherwise we leave `point' at point-min. */ | |
4704 | int opoint = PT; | |
4705 | int opoint_byte = PT_BYTE; | |
4706 | int oinserted = ZV - BEGV; | |
cac4219c | 4707 | int ochars_modiff = CHARS_MODIFF; |
1f163f28 MA |
4708 | |
4709 | TEMP_SET_PT_BOTH (BEGV, BEGV_BYTE); | |
6f2528d8 MR |
4710 | insval = call3 (Qformat_decode, |
4711 | Qnil, make_number (oinserted), visit); | |
4712 | CHECK_NUMBER (insval); | |
cac4219c MR |
4713 | if (ochars_modiff == CHARS_MODIFF) |
4714 | /* format_decode didn't modify buffer's characters => move | |
4715 | point back to position before inserted text and leave | |
4716 | value of inserted alone. */ | |
6f2528d8 | 4717 | SET_PT_BOTH (opoint, opoint_byte); |
cac4219c MR |
4718 | else |
4719 | /* format_decode modified buffer's characters => consider | |
4720 | entire buffer changed and leave point at point-min. */ | |
4721 | inserted = XFASTINT (insval); | |
ed8e506f | 4722 | } |
efdc16c9 | 4723 | |
6f2528d8 MR |
4724 | /* For consistency with format-decode call these now iff inserted > 0 |
4725 | (martin 2007-06-28) */ | |
4726 | p = Vafter_insert_file_functions; | |
4727 | while (CONSP (p)) | |
4728 | { | |
4729 | if (NILP (replace)) | |
4730 | { | |
4731 | insval = call1 (XCAR (p), make_number (inserted)); | |
4732 | if (!NILP (insval)) | |
4733 | { | |
4734 | CHECK_NUMBER (insval); | |
4735 | inserted = XFASTINT (insval); | |
4736 | } | |
4737 | } | |
4738 | else | |
4739 | { | |
4740 | /* For the rationale of this see the comment on format-decode above. */ | |
4741 | int opoint = PT; | |
4742 | int opoint_byte = PT_BYTE; | |
4743 | int oinserted = ZV - BEGV; | |
cac4219c | 4744 | int ochars_modiff = CHARS_MODIFF; |
1f163f28 | 4745 | |
6f2528d8 MR |
4746 | TEMP_SET_PT_BOTH (BEGV, BEGV_BYTE); |
4747 | insval = call1 (XCAR (p), make_number (oinserted)); | |
4748 | if (!NILP (insval)) | |
4749 | { | |
4750 | CHECK_NUMBER (insval); | |
cac4219c MR |
4751 | if (ochars_modiff == CHARS_MODIFF) |
4752 | /* after_insert_file_functions didn't modify | |
4753 | buffer's characters => move point back to | |
4754 | position before inserted text and leave value of | |
4755 | inserted alone. */ | |
6f2528d8 | 4756 | SET_PT_BOTH (opoint, opoint_byte); |
cac4219c MR |
4757 | else |
4758 | /* after_insert_file_functions did modify buffer's | |
4759 | characters => consider entire buffer changed and | |
4760 | leave point at point-min. */ | |
4761 | inserted = XFASTINT (insval); | |
6f2528d8 MR |
4762 | } |
4763 | } | |
4764 | ||
4765 | QUIT; | |
4766 | p = XCDR (p); | |
ed8e506f | 4767 | } |
efdc16c9 | 4768 | |
6f2528d8 MR |
4769 | if (NILP (visit)) |
4770 | { | |
4771 | Lisp_Object lbeg, lend; | |
4772 | XSETINT (lbeg, PT); | |
4773 | XSETINT (lend, PT + inserted); | |
4774 | if (CONSP (old_undo)) | |
4775 | { | |
4776 | Lisp_Object tem = XCAR (old_undo); | |
4777 | if (CONSP (tem) && INTEGERP (XCAR (tem)) && | |
1bc99c9c | 4778 | INTEGERP (XCDR (tem)) && EQ (XCAR (tem), lbeg)) |
6f2528d8 MR |
4779 | /* In the non-visiting case record only the final insertion. */ |
4780 | current_buffer->undo_list = | |
4781 | Fcons (Fcons (lbeg, lend), Fcdr (old_undo)); | |
4782 | } | |
4783 | } | |
6f2528d8 | 4784 | else |
1bc99c9c SM |
4785 | /* If undo_list was Qt before, keep it that way. |
4786 | Otherwise start with an empty undo_list. */ | |
4787 | current_buffer->undo_list = EQ (old_undo, Qt) ? Qt : Qnil; | |
efdc16c9 | 4788 | |
6f2528d8 | 4789 | unbind_to (count, Qnil); |
0d420e88 BG |
4790 | } |
4791 | ||
0342d8c5 RS |
4792 | /* Call after-change hooks for the inserted text, aside from the case |
4793 | of normal visiting (not with REPLACE), which is done in a new buffer | |
4794 | "before" the buffer is changed. */ | |
c8a6d68a | 4795 | if (inserted > 0 && total > 0 |
0342d8c5 | 4796 | && (NILP (visit) || !NILP (replace))) |
ce51c54c KH |
4797 | { |
4798 | signal_after_change (PT, 0, inserted); | |
4799 | update_compositions (PT, PT, CHECK_BORDER); | |
4800 | } | |
b56567b5 | 4801 | |
f8569325 DL |
4802 | if (!NILP (visit) |
4803 | && current_buffer->modtime == -1) | |
4804 | { | |
4805 | /* If visiting nonexistent file, return nil. */ | |
4806 | report_file_error ("Opening input file", Fcons (orig_filename, Qnil)); | |
d6a3cc15 RS |
4807 | } |
4808 | ||
1b978129 GM |
4809 | if (read_quit) |
4810 | Fsignal (Qquit, Qnil); | |
4811 | ||
ec7adf26 | 4812 | /* ??? Retval needs to be dealt with in all cases consistently. */ |
a1d2b64a | 4813 | if (NILP (val)) |
b1d1b865 | 4814 | val = Fcons (orig_filename, |
a1d2b64a RS |
4815 | Fcons (make_number (inserted), |
4816 | Qnil)); | |
4817 | ||
4818 | RETURN_UNGCPRO (unbind_to (count, val)); | |
570d7624 | 4819 | } |
7fded690 | 4820 | \f |
236a12f2 | 4821 | static Lisp_Object build_annotations P_ ((Lisp_Object, Lisp_Object)); |
d6a3cc15 | 4822 | |
6fc6f94b | 4823 | /* If build_annotations switched buffers, switch back to BUF. |
6fdaa9a0 KH |
4824 | Kill the temporary buffer that was selected in the meantime. |
4825 | ||
4826 | Since this kill only the last temporary buffer, some buffers remain | |
4827 | not killed if build_annotations switched buffers more than once. | |
4828 | -- K.Handa */ | |
6fc6f94b | 4829 | |
199607e4 | 4830 | static Lisp_Object |
6fc6f94b RS |
4831 | build_annotations_unwind (buf) |
4832 | Lisp_Object buf; | |
4833 | { | |
4834 | Lisp_Object tembuf; | |
4835 | ||
4836 | if (XBUFFER (buf) == current_buffer) | |
4837 | return Qnil; | |
4838 | tembuf = Fcurrent_buffer (); | |
4839 | Fset_buffer (buf); | |
4840 | Fkill_buffer (tembuf); | |
4841 | return Qnil; | |
4842 | } | |
4843 | ||
7c82a4a9 SM |
4844 | /* Decide the coding-system to encode the data with. */ |
4845 | ||
c934586d | 4846 | static Lisp_Object |
7c82a4a9 SM |
4847 | choose_write_coding_system (start, end, filename, |
4848 | append, visit, lockname, coding) | |
4849 | Lisp_Object start, end, filename, append, visit, lockname; | |
4850 | struct coding_system *coding; | |
4851 | { | |
4852 | Lisp_Object val; | |
75421805 | 4853 | Lisp_Object eol_parent = Qnil; |
7c82a4a9 | 4854 | |
6b61353c KH |
4855 | if (auto_saving |
4856 | && NILP (Fstring_equal (current_buffer->filename, | |
4857 | current_buffer->auto_save_file_name))) | |
75421805 KH |
4858 | { |
4859 | val = Qutf_8_emacs; | |
4860 | eol_parent = Qunix; | |
4861 | } | |
7c82a4a9 | 4862 | else if (!NILP (Vcoding_system_for_write)) |
42b01e1e KH |
4863 | { |
4864 | val = Vcoding_system_for_write; | |
4865 | if (coding_system_require_warning | |
4866 | && !NILP (Ffboundp (Vselect_safe_coding_system_function))) | |
4867 | /* Confirm that VAL can surely encode the current region. */ | |
4868 | val = call5 (Vselect_safe_coding_system_function, | |
4869 | start, end, Fcons (Qt, Fcons (val, Qnil)), | |
4870 | Qnil, filename); | |
4871 | } | |
7c82a4a9 SM |
4872 | else |
4873 | { | |
4874 | /* If the variable `buffer-file-coding-system' is set locally, | |
4875 | it means that the file was read with some kind of code | |
4876 | conversion or the variable is explicitly set by users. We | |
4877 | had better write it out with the same coding system even if | |
4878 | `enable-multibyte-characters' is nil. | |
4879 | ||
4880 | If it is not set locally, we anyway have to convert EOL | |
4881 | format if the default value of `buffer-file-coding-system' | |
4882 | tells that it is not Unix-like (LF only) format. */ | |
4883 | int using_default_coding = 0; | |
4884 | int force_raw_text = 0; | |
4885 | ||
4886 | val = current_buffer->buffer_file_coding_system; | |
4887 | if (NILP (val) | |
4888 | || NILP (Flocal_variable_p (Qbuffer_file_coding_system, Qnil))) | |
4889 | { | |
4890 | val = Qnil; | |
4891 | if (NILP (current_buffer->enable_multibyte_characters)) | |
4892 | force_raw_text = 1; | |
4893 | } | |
efdc16c9 | 4894 | |
7c82a4a9 SM |
4895 | if (NILP (val)) |
4896 | { | |
4897 | /* Check file-coding-system-alist. */ | |
4898 | Lisp_Object args[7], coding_systems; | |
4899 | ||
4900 | args[0] = Qwrite_region; args[1] = start; args[2] = end; | |
4901 | args[3] = filename; args[4] = append; args[5] = visit; | |
4902 | args[6] = lockname; | |
4903 | coding_systems = Ffind_operation_coding_system (7, args); | |
4904 | if (CONSP (coding_systems) && !NILP (XCDR (coding_systems))) | |
4905 | val = XCDR (coding_systems); | |
4906 | } | |
4907 | ||
c934586d | 4908 | if (NILP (val)) |
7c82a4a9 SM |
4909 | { |
4910 | /* If we still have not decided a coding system, use the | |
4911 | default value of buffer-file-coding-system. */ | |
4912 | val = current_buffer->buffer_file_coding_system; | |
4913 | using_default_coding = 1; | |
4914 | } | |
efdc16c9 | 4915 | |
db327c7e KH |
4916 | if (! NILP (val) && ! force_raw_text) |
4917 | { | |
4918 | Lisp_Object spec, attrs; | |
4919 | ||
4920 | CHECK_CODING_SYSTEM_GET_SPEC (val, spec); | |
4921 | attrs = AREF (spec, 0); | |
4922 | if (EQ (CODING_ATTR_TYPE (attrs), Qraw_text)) | |
4923 | force_raw_text = 1; | |
4924 | } | |
4925 | ||
7c82a4a9 SM |
4926 | if (!force_raw_text |
4927 | && !NILP (Ffboundp (Vselect_safe_coding_system_function))) | |
4928 | /* Confirm that VAL can surely encode the current region. */ | |
905a4276 PJ |
4929 | val = call5 (Vselect_safe_coding_system_function, |
4930 | start, end, val, Qnil, filename); | |
7c82a4a9 | 4931 | |
db327c7e KH |
4932 | /* If the decided coding-system doesn't specify end-of-line |
4933 | format, we use that of | |
4934 | `default-buffer-file-coding-system'. */ | |
c934586d KH |
4935 | if (! using_default_coding |
4936 | && ! NILP (buffer_defaults.buffer_file_coding_system)) | |
db327c7e KH |
4937 | val = (coding_inherit_eol_type |
4938 | (val, buffer_defaults.buffer_file_coding_system)); | |
7c82a4a9 | 4939 | |
db327c7e KH |
4940 | /* If we decide not to encode text, use `raw-text' or one of its |
4941 | subsidiaries. */ | |
7c82a4a9 | 4942 | if (force_raw_text) |
db327c7e | 4943 | val = raw_text_coding_system (val); |
7c82a4a9 SM |
4944 | } |
4945 | ||
75421805 | 4946 | val = coding_inherit_eol_type (val, eol_parent); |
c934586d | 4947 | setup_coding_system (val, coding); |
7c82a4a9 | 4948 | |
7c82a4a9 SM |
4949 | if (!STRINGP (start) && !NILP (current_buffer->selective_display)) |
4950 | coding->mode |= CODING_MODE_SELECTIVE_DISPLAY; | |
c934586d | 4951 | return val; |
7c82a4a9 SM |
4952 | } |
4953 | ||
de1d0127 | 4954 | DEFUN ("write-region", Fwrite_region, Swrite_region, 3, 7, |
8c1a1077 PJ |
4955 | "r\nFWrite region to file: \ni\ni\ni\np", |
4956 | doc: /* Write current region into specified file. | |
c2efea25 RS |
4957 | When called from a program, requires three arguments: |
4958 | START, END and FILENAME. START and END are normally buffer positions | |
4959 | specifying the part of the buffer to write. | |
4960 | If START is nil, that means to use the entire buffer contents. | |
4961 | If START is a string, then output that string to the file | |
4962 | instead of any buffer contents; END is ignored. | |
4963 | ||
8c1a1077 PJ |
4964 | Optional fourth argument APPEND if non-nil means |
4965 | append to existing file contents (if any). If it is an integer, | |
4966 | seek to that offset in the file before writing. | |
36e50520 | 4967 | Optional fifth argument VISIT, if t or a string, means |
8c1a1077 PJ |
4968 | set the last-save-file-modtime of buffer to this file's modtime |
4969 | and mark buffer not modified. | |
4970 | If VISIT is a string, it is a second file name; | |
4971 | the output goes to FILENAME, but the buffer is marked as visiting VISIT. | |
4972 | VISIT is also the file name to lock and unlock for clash detection. | |
4973 | If VISIT is neither t nor nil nor a string, | |
5f4e6aa9 | 4974 | that means do not display the \"Wrote file\" message. |
8c1a1077 PJ |
4975 | The optional sixth arg LOCKNAME, if non-nil, specifies the name to |
4976 | use for locking and unlocking, overriding FILENAME and VISIT. | |
4977 | The optional seventh arg MUSTBENEW, if non-nil, insists on a check | |
4978 | for an existing file with the same name. If MUSTBENEW is `excl', | |
4979 | that means to get an error if the file already exists; never overwrite. | |
4980 | If MUSTBENEW is neither nil nor `excl', that means ask for | |
4981 | confirmation before overwriting, but do go ahead and overwrite the file | |
4982 | if the user confirms. | |
8c1a1077 PJ |
4983 | |
4984 | This does code conversion according to the value of | |
4985 | `coding-system-for-write', `buffer-file-coding-system', or | |
4986 | `file-coding-system-alist', and sets the variable | |
4987 | `last-coding-system-used' to the coding system actually used. */) | |
4988 | (start, end, filename, append, visit, lockname, mustbenew) | |
f7b4065f | 4989 | Lisp_Object start, end, filename, append, visit, lockname, mustbenew; |
570d7624 JB |
4990 | { |
4991 | register int desc; | |
4992 | int failure; | |
6bbd7a29 | 4993 | int save_errno = 0; |
19290c65 | 4994 | const unsigned char *fn; |
570d7624 | 4995 | struct stat st; |
aed13378 | 4996 | int count = SPECPDL_INDEX (); |
6fc6f94b | 4997 | int count1; |
570d7624 | 4998 | #ifdef VMS |
5e570b75 | 4999 | unsigned char *fname = 0; /* If non-0, original filename (must rename) */ |
570d7624 | 5000 | #endif /* VMS */ |
3eac9910 | 5001 | Lisp_Object handler; |
4ad827c5 | 5002 | Lisp_Object visit_file; |
65b7d3e7 | 5003 | Lisp_Object annotations; |
b1d1b865 | 5004 | Lisp_Object encoded_filename; |
d3a67486 SM |
5005 | int visiting = (EQ (visit, Qt) || STRINGP (visit)); |
5006 | int quietly = !NILP (visit); | |
7204a979 | 5007 | struct gcpro gcpro1, gcpro2, gcpro3, gcpro4, gcpro5; |
6fc6f94b | 5008 | struct buffer *given_buffer; |
5e570b75 | 5009 | #ifdef DOS_NT |
fa228724 | 5010 | int buffer_file_type = O_BINARY; |
5e570b75 | 5011 | #endif /* DOS_NT */ |
6fdaa9a0 | 5012 | struct coding_system coding; |
570d7624 | 5013 | |
d3a67486 | 5014 | if (current_buffer->base_buffer && visiting) |
95385625 RS |
5015 | error ("Cannot do file visiting in an indirect buffer"); |
5016 | ||
561cb8e1 | 5017 | if (!NILP (start) && !STRINGP (start)) |
570d7624 JB |
5018 | validate_region (&start, &end); |
5019 | ||
95c1c901 | 5020 | visit_file = Qnil; |
59fac292 | 5021 | GCPRO5 (start, filename, visit, visit_file, lockname); |
b56567b5 | 5022 | |
570d7624 | 5023 | filename = Fexpand_file_name (filename, Qnil); |
de1d0127 | 5024 | |
236a12f2 | 5025 | if (!NILP (mustbenew) && !EQ (mustbenew, Qexcl)) |
b8b29dc9 | 5026 | barf_or_query_if_file_exists (filename, "overwrite", 1, 0, 1); |
de1d0127 | 5027 | |
561cb8e1 | 5028 | if (STRINGP (visit)) |
e5176bae | 5029 | visit_file = Fexpand_file_name (visit, Qnil); |
4ad827c5 RS |
5030 | else |
5031 | visit_file = filename; | |
5032 | ||
7204a979 RS |
5033 | if (NILP (lockname)) |
5034 | lockname = visit_file; | |
5035 | ||
65b7d3e7 RS |
5036 | annotations = Qnil; |
5037 | ||
32f4334d RS |
5038 | /* If the file name has special constructs in it, |
5039 | call the corresponding file handler. */ | |
49307295 | 5040 | handler = Ffind_file_name_handler (filename, Qwrite_region); |
b56ad927 | 5041 | /* If FILENAME has no handler, see if VISIT has one. */ |
93c30b5f | 5042 | if (NILP (handler) && STRINGP (visit)) |
199607e4 | 5043 | handler = Ffind_file_name_handler (visit, Qwrite_region); |
3eac9910 | 5044 | |
32f4334d RS |
5045 | if (!NILP (handler)) |
5046 | { | |
32f4334d | 5047 | Lisp_Object val; |
51cf6d37 RS |
5048 | val = call6 (handler, Qwrite_region, start, end, |
5049 | filename, append, visit); | |
32f4334d | 5050 | |
d6a3cc15 | 5051 | if (visiting) |
32f4334d | 5052 | { |
95385625 | 5053 | SAVE_MODIFF = MODIFF; |
2acfd7ae | 5054 | XSETFASTINT (current_buffer->save_length, Z - BEG); |
3b7792ed | 5055 | current_buffer->filename = visit_file; |
32f4334d | 5056 | } |
09121adc | 5057 | UNGCPRO; |
32f4334d RS |
5058 | return val; |
5059 | } | |
5060 | ||
4a38de71 KH |
5061 | record_unwind_protect (save_restriction_restore, save_restriction_save ()); |
5062 | ||
561cb8e1 RS |
5063 | /* Special kludge to simplify auto-saving. */ |
5064 | if (NILP (start)) | |
5065 | { | |
2acfd7ae KH |
5066 | XSETFASTINT (start, BEG); |
5067 | XSETFASTINT (end, Z); | |
4a38de71 | 5068 | Fwiden (); |
561cb8e1 RS |
5069 | } |
5070 | ||
6fc6f94b | 5071 | record_unwind_protect (build_annotations_unwind, Fcurrent_buffer ()); |
aed13378 | 5072 | count1 = SPECPDL_INDEX (); |
6fc6f94b RS |
5073 | |
5074 | given_buffer = current_buffer; | |
bf3428a1 RS |
5075 | |
5076 | if (!STRINGP (start)) | |
236a12f2 | 5077 | { |
bf3428a1 RS |
5078 | annotations = build_annotations (start, end); |
5079 | ||
5080 | if (current_buffer != given_buffer) | |
5081 | { | |
5082 | XSETFASTINT (start, BEGV); | |
5083 | XSETFASTINT (end, ZV); | |
5084 | } | |
236a12f2 SM |
5085 | } |
5086 | ||
5087 | UNGCPRO; | |
5088 | ||
5089 | GCPRO5 (start, filename, annotations, visit_file, lockname); | |
5090 | ||
59fac292 SM |
5091 | /* Decide the coding-system to encode the data with. |
5092 | We used to make this choice before calling build_annotations, but that | |
5093 | leads to problems when a write-annotate-function takes care of | |
5094 | unsavable chars (as was the case with X-Symbol). */ | |
c934586d KH |
5095 | Vlast_coding_system_used |
5096 | = choose_write_coding_system (start, end, filename, | |
5097 | append, visit, lockname, &coding); | |
d6a3cc15 | 5098 | |
570d7624 JB |
5099 | #ifdef CLASH_DETECTION |
5100 | if (!auto_saving) | |
84f6296a | 5101 | { |
a9171faa | 5102 | #if 0 /* This causes trouble for GNUS. */ |
84f6296a RS |
5103 | /* If we've locked this file for some other buffer, |
5104 | query before proceeding. */ | |
5105 | if (!visiting && EQ (Ffile_locked_p (lockname), Qt)) | |
bffd00b0 | 5106 | call2 (intern ("ask-user-about-lock"), filename, Vuser_login_name); |
a9171faa | 5107 | #endif |
84f6296a RS |
5108 | |
5109 | lock_file (lockname); | |
5110 | } | |
570d7624 JB |
5111 | #endif /* CLASH_DETECTION */ |
5112 | ||
b1d1b865 RS |
5113 | encoded_filename = ENCODE_FILE (filename); |
5114 | ||
d5db4077 | 5115 | fn = SDATA (encoded_filename); |
570d7624 | 5116 | desc = -1; |
265a9e55 | 5117 | if (!NILP (append)) |
5e570b75 | 5118 | #ifdef DOS_NT |
68c45bf0 | 5119 | desc = emacs_open (fn, O_WRONLY | buffer_file_type, 0); |
5e570b75 | 5120 | #else /* not DOS_NT */ |
68c45bf0 | 5121 | desc = emacs_open (fn, O_WRONLY, 0); |
5e570b75 | 5122 | #endif /* not DOS_NT */ |
570d7624 | 5123 | |
b1d1b865 | 5124 | if (desc < 0 && (NILP (append) || errno == ENOENT)) |
570d7624 | 5125 | #ifdef VMS |
5e570b75 | 5126 | if (auto_saving) /* Overwrite any previous version of autosave file */ |
570d7624 | 5127 | { |
5e570b75 | 5128 | vms_truncate (fn); /* if fn exists, truncate to zero length */ |
68c45bf0 | 5129 | desc = emacs_open (fn, O_RDWR, 0); |
570d7624 | 5130 | if (desc < 0) |
561cb8e1 | 5131 | desc = creat_copy_attrs (STRINGP (current_buffer->filename) |
d5db4077 | 5132 | ? SDATA (current_buffer->filename) : 0, |
b72dea2a | 5133 | fn); |
570d7624 | 5134 | } |
5e570b75 | 5135 | else /* Write to temporary name and rename if no errors */ |
570d7624 JB |
5136 | { |
5137 | Lisp_Object temp_name; | |
5138 | temp_name = Ffile_name_directory (filename); | |
5139 | ||
265a9e55 | 5140 | if (!NILP (temp_name)) |
570d7624 JB |
5141 | { |
5142 | temp_name = Fmake_temp_name (concat2 (temp_name, | |
5143 | build_string ("$$SAVE$$"))); | |
d5db4077 KR |
5144 | fname = SDATA (filename); |
5145 | fn = SDATA (temp_name); | |
570d7624 JB |
5146 | desc = creat_copy_attrs (fname, fn); |
5147 | if (desc < 0) | |
5148 | { | |
5149 | /* If we can't open the temporary file, try creating a new | |
5150 | version of the original file. VMS "creat" creates a | |
5151 | new version rather than truncating an existing file. */ | |
5152 | fn = fname; | |
5153 | fname = 0; | |
5154 | desc = creat (fn, 0666); | |
5155 | #if 0 /* This can clobber an existing file and fail to replace it, | |
5156 | if the user runs out of space. */ | |
5157 | if (desc < 0) | |
5158 | { | |
5159 | /* We can't make a new version; | |
5160 | try to truncate and rewrite existing version if any. */ | |
5161 | vms_truncate (fn); | |
68c45bf0 | 5162 | desc = emacs_open (fn, O_RDWR, 0); |
570d7624 JB |
5163 | } |
5164 | #endif | |
5165 | } | |
5166 | } | |
5167 | else | |
5168 | desc = creat (fn, 0666); | |
5169 | } | |
5170 | #else /* not VMS */ | |
5e570b75 | 5171 | #ifdef DOS_NT |
68c45bf0 | 5172 | desc = emacs_open (fn, |
95522746 GM |
5173 | O_WRONLY | O_CREAT | buffer_file_type |
5174 | | (EQ (mustbenew, Qexcl) ? O_EXCL : O_TRUNC), | |
68c45bf0 | 5175 | S_IREAD | S_IWRITE); |
5e570b75 | 5176 | #else /* not DOS_NT */ |
68c45bf0 | 5177 | desc = emacs_open (fn, O_WRONLY | O_TRUNC | O_CREAT |
7c752c80 | 5178 | | (EQ (mustbenew, Qexcl) ? O_EXCL : 0), |
68c45bf0 | 5179 | auto_saving ? auto_save_mode_bits : 0666); |
5e570b75 | 5180 | #endif /* not DOS_NT */ |
570d7624 JB |
5181 | #endif /* not VMS */ |
5182 | ||
5183 | if (desc < 0) | |
5184 | { | |
5185 | #ifdef CLASH_DETECTION | |
5186 | save_errno = errno; | |
7204a979 | 5187 | if (!auto_saving) unlock_file (lockname); |
570d7624 JB |
5188 | errno = save_errno; |
5189 | #endif /* CLASH_DETECTION */ | |
43fb7d9a | 5190 | UNGCPRO; |
570d7624 JB |
5191 | report_file_error ("Opening output file", Fcons (filename, Qnil)); |
5192 | } | |
5193 | ||
5194 | record_unwind_protect (close_file_unwind, make_number (desc)); | |
5195 | ||
c1c4693e | 5196 | if (!NILP (append) && !NILP (Ffile_regular_p (filename))) |
43fb7d9a DL |
5197 | { |
5198 | long ret; | |
efdc16c9 | 5199 | |
43fb7d9a DL |
5200 | if (NUMBERP (append)) |
5201 | ret = lseek (desc, XINT (append), 1); | |
5202 | else | |
5203 | ret = lseek (desc, 0, 2); | |
5204 | if (ret < 0) | |
5205 | { | |
570d7624 | 5206 | #ifdef CLASH_DETECTION |
43fb7d9a | 5207 | if (!auto_saving) unlock_file (lockname); |
570d7624 | 5208 | #endif /* CLASH_DETECTION */ |
43fb7d9a DL |
5209 | UNGCPRO; |
5210 | report_file_error ("Lseek error", Fcons (filename, Qnil)); | |
5211 | } | |
5212 | } | |
efdc16c9 | 5213 | |
43fb7d9a | 5214 | UNGCPRO; |
570d7624 JB |
5215 | |
5216 | #ifdef VMS | |
5217 | /* | |
5218 | * Kludge Warning: The VMS C RTL likes to insert carriage returns | |
5219 | * if we do writes that don't end with a carriage return. Furthermore | |
5220 | * it cannot handle writes of more then 16K. The modified | |
5221 | * version of "sys_write" in SYSDEP.C (see comment there) copes with | |
e0f24100 | 5222 | * this EXCEPT for the last record (if it doesn't end with a carriage |
570d7624 JB |
5223 | * return). This implies that if your buffer doesn't end with a carriage |
5224 | * return, you get one free... tough. However it also means that if | |
5225 | * we make two calls to sys_write (a la the following code) you can | |
5226 | * get one at the gap as well. The easiest way to fix this (honest) | |
5227 | * is to move the gap to the next newline (or the end of the buffer). | |
5228 | * Thus this change. | |
5229 | * | |
5230 | * Yech! | |
5231 | */ | |
5232 | if (GPT > BEG && GPT_ADDR[-1] != '\n') | |
5233 | move_gap (find_next_newline (GPT, 1)); | |
cdfb0f1d | 5234 | #else |
db327c7e KH |
5235 | #if 0 |
5236 | /* The new encoding routine doesn't require the following. */ | |
5237 | ||
cdfb0f1d KH |
5238 | /* Whether VMS or not, we must move the gap to the next of newline |
5239 | when we must put designation sequences at beginning of line. */ | |
5240 | if (INTEGERP (start) | |
5241 | && coding.type == coding_type_iso2022 | |
5242 | && coding.flags & CODING_FLAG_ISO_DESIGNATE_AT_BOL | |
5243 | && GPT > BEG && GPT_ADDR[-1] != '\n') | |
ec7adf26 RS |
5244 | { |
5245 | int opoint = PT, opoint_byte = PT_BYTE; | |
5246 | scan_newline (PT, PT_BYTE, ZV, ZV_BYTE, 1, 0); | |
5247 | move_gap_both (PT, PT_BYTE); | |
5248 | SET_PT_BOTH (opoint, opoint_byte); | |
5249 | } | |
db327c7e | 5250 | #endif |
570d7624 JB |
5251 | #endif |
5252 | ||
5253 | failure = 0; | |
5254 | immediate_quit = 1; | |
5255 | ||
561cb8e1 | 5256 | if (STRINGP (start)) |
570d7624 | 5257 | { |
d5db4077 | 5258 | failure = 0 > a_write (desc, start, 0, SCHARS (start), |
ce51c54c | 5259 | &annotations, &coding); |
570d7624 JB |
5260 | save_errno = errno; |
5261 | } | |
5262 | else if (XINT (start) != XINT (end)) | |
5263 | { | |
db327c7e KH |
5264 | failure = 0 > a_write (desc, Qnil, |
5265 | XINT (start), XINT (end) - XINT (start), | |
5266 | &annotations, &coding); | |
5267 | save_errno = errno; | |
69f6e679 RS |
5268 | } |
5269 | else | |
5270 | { | |
5271 | /* If file was empty, still need to write the annotations */ | |
c8a6d68a | 5272 | coding.mode |= CODING_MODE_LAST_BLOCK; |
ce51c54c | 5273 | failure = 0 > a_write (desc, Qnil, XINT (end), 0, &annotations, &coding); |
6fdaa9a0 KH |
5274 | save_errno = errno; |
5275 | } | |
5276 | ||
c8a6d68a KH |
5277 | if (CODING_REQUIRE_FLUSHING (&coding) |
5278 | && !(coding.mode & CODING_MODE_LAST_BLOCK) | |
1354debd | 5279 | && ! failure) |
6fdaa9a0 KH |
5280 | { |
5281 | /* We have to flush out a data. */ | |
c8a6d68a | 5282 | coding.mode |= CODING_MODE_LAST_BLOCK; |
db327c7e | 5283 | failure = 0 > e_write (desc, Qnil, 1, 1, &coding); |
69f6e679 | 5284 | save_errno = errno; |
570d7624 JB |
5285 | } |
5286 | ||
5287 | immediate_quit = 0; | |
5288 | ||
6e23c83e | 5289 | #ifdef HAVE_FSYNC |
570d7624 JB |
5290 | /* Note fsync appears to change the modtime on BSD4.2 (both vax and sun). |
5291 | Disk full in NFS may be reported here. */ | |
1daffa1c RS |
5292 | /* mib says that closing the file will try to write as fast as NFS can do |
5293 | it, and that means the fsync here is not crucial for autosave files. */ | |
ccf61795 | 5294 | if (!auto_saving && !write_region_inhibit_fsync && fsync (desc) < 0) |
cb33c142 | 5295 | { |
6cff77fd AS |
5296 | /* If fsync fails with EINTR, don't treat that as serious. Also |
5297 | ignore EINVAL which happens when fsync is not supported on this | |
5298 | file. */ | |
5299 | if (errno != EINTR && errno != EINVAL) | |
cb33c142 KH |
5300 | failure = 1, save_errno = errno; |
5301 | } | |
570d7624 JB |
5302 | #endif |
5303 | ||
199607e4 | 5304 | /* Spurious "file has changed on disk" warnings have been |
570d7624 JB |
5305 | observed on Suns as well. |
5306 | It seems that `close' can change the modtime, under nfs. | |
5307 | ||
5308 | (This has supposedly been fixed in Sunos 4, | |
5309 | but who knows about all the other machines with NFS?) */ | |
5310 | #if 0 | |
5311 | ||
e39a993c | 5312 | /* On VMS, must do the stat after the close |
570d7624 JB |
5313 | since closing changes the modtime. */ |
5314 | #ifndef VMS | |
570d7624 JB |
5315 | /* Recall that #if defined does not work on VMS. */ |
5316 | #define FOO | |
5317 | fstat (desc, &st); | |
5318 | #endif | |
570d7624 JB |
5319 | #endif |
5320 | ||
5321 | /* NFS can report a write failure now. */ | |
68c45bf0 | 5322 | if (emacs_close (desc) < 0) |
570d7624 JB |
5323 | failure = 1, save_errno = errno; |
5324 | ||
5325 | #ifdef VMS | |
5326 | /* If we wrote to a temporary name and had no errors, rename to real name. */ | |
5327 | if (fname) | |
5328 | { | |
5329 | if (!failure) | |
5330 | failure = (rename (fn, fname) != 0), save_errno = errno; | |
5331 | fn = fname; | |
5332 | } | |
5333 | #endif /* VMS */ | |
5334 | ||
5335 | #ifndef FOO | |
5336 | stat (fn, &st); | |
5337 | #endif | |
6fc6f94b RS |
5338 | /* Discard the unwind protect for close_file_unwind. */ |
5339 | specpdl_ptr = specpdl + count1; | |
5340 | /* Restore the original current buffer. */ | |
98295b48 | 5341 | visit_file = unbind_to (count, visit_file); |
570d7624 JB |
5342 | |
5343 | #ifdef CLASH_DETECTION | |
5344 | if (!auto_saving) | |
7204a979 | 5345 | unlock_file (lockname); |
570d7624 JB |
5346 | #endif /* CLASH_DETECTION */ |
5347 | ||
5348 | /* Do this before reporting IO error | |
5349 | to avoid a "file has changed on disk" warning on | |
5350 | next attempt to save. */ | |
d6a3cc15 | 5351 | if (visiting) |
570d7624 JB |
5352 | current_buffer->modtime = st.st_mtime; |
5353 | ||
5354 | if (failure) | |
d5db4077 | 5355 | error ("IO error writing %s: %s", SDATA (filename), |
68c45bf0 | 5356 | emacs_strerror (save_errno)); |
570d7624 | 5357 | |
d6a3cc15 | 5358 | if (visiting) |
570d7624 | 5359 | { |
95385625 | 5360 | SAVE_MODIFF = MODIFF; |
2acfd7ae | 5361 | XSETFASTINT (current_buffer->save_length, Z - BEG); |
3b7792ed | 5362 | current_buffer->filename = visit_file; |
f4226e89 | 5363 | update_mode_lines++; |
570d7624 | 5364 | } |
d6a3cc15 | 5365 | else if (quietly) |
6b61353c KH |
5366 | { |
5367 | if (auto_saving | |
5368 | && ! NILP (Fstring_equal (current_buffer->filename, | |
5369 | current_buffer->auto_save_file_name))) | |
5370 | SAVE_MODIFF = MODIFF; | |
5371 | ||
5372 | return Qnil; | |
5373 | } | |
570d7624 JB |
5374 | |
5375 | if (!auto_saving) | |
6b61353c | 5376 | message_with_string ((INTEGERP (append) |
0c328a0e RS |
5377 | ? "Updated %s" |
5378 | : ! NILP (append) | |
5379 | ? "Added to %s" | |
5380 | : "Wrote %s"), | |
5381 | visit_file, 1); | |
570d7624 JB |
5382 | |
5383 | return Qnil; | |
5384 | } | |
ec7adf26 | 5385 | \f |
d6a3cc15 RS |
5386 | Lisp_Object merge (); |
5387 | ||
5388 | DEFUN ("car-less-than-car", Fcar_less_than_car, Scar_less_than_car, 2, 2, 0, | |
8c1a1077 PJ |
5389 | doc: /* Return t if (car A) is numerically less than (car B). */) |
5390 | (a, b) | |
d6a3cc15 RS |
5391 | Lisp_Object a, b; |
5392 | { | |
5393 | return Flss (Fcar (a), Fcar (b)); | |
5394 | } | |
5395 | ||
5396 | /* Build the complete list of annotations appropriate for writing out | |
5397 | the text between START and END, by calling all the functions in | |
6fc6f94b RS |
5398 | write-region-annotate-functions and merging the lists they return. |
5399 | If one of these functions switches to a different buffer, we assume | |
5400 | that buffer contains altered text. Therefore, the caller must | |
5401 | make sure to restore the current buffer in all cases, | |
5402 | as save-excursion would do. */ | |
d6a3cc15 RS |
5403 | |
5404 | static Lisp_Object | |
236a12f2 SM |
5405 | build_annotations (start, end) |
5406 | Lisp_Object start, end; | |
d6a3cc15 RS |
5407 | { |
5408 | Lisp_Object annotations; | |
5409 | Lisp_Object p, res; | |
5410 | struct gcpro gcpro1, gcpro2; | |
0a20b684 | 5411 | Lisp_Object original_buffer; |
bd235610 | 5412 | int i, used_global = 0; |
0a20b684 RS |
5413 | |
5414 | XSETBUFFER (original_buffer, current_buffer); | |
d6a3cc15 RS |
5415 | |
5416 | annotations = Qnil; | |
5417 | p = Vwrite_region_annotate_functions; | |
5418 | GCPRO2 (annotations, p); | |
28c3eb5a | 5419 | while (CONSP (p)) |
d6a3cc15 | 5420 | { |
6fc6f94b | 5421 | struct buffer *given_buffer = current_buffer; |
bd235610 SM |
5422 | if (EQ (Qt, XCAR (p)) && !used_global) |
5423 | { /* Use the global value of the hook. */ | |
5424 | Lisp_Object arg[2]; | |
5425 | used_global = 1; | |
5426 | arg[0] = Fdefault_value (Qwrite_region_annotate_functions); | |
5427 | arg[1] = XCDR (p); | |
5428 | p = Fappend (2, arg); | |
5429 | continue; | |
5430 | } | |
6fc6f94b | 5431 | Vwrite_region_annotations_so_far = annotations; |
28c3eb5a | 5432 | res = call2 (XCAR (p), start, end); |
6fc6f94b RS |
5433 | /* If the function makes a different buffer current, |
5434 | assume that means this buffer contains altered text to be output. | |
5435 | Reset START and END from the buffer bounds | |
5436 | and discard all previous annotations because they should have | |
5437 | been dealt with by this function. */ | |
5438 | if (current_buffer != given_buffer) | |
5439 | { | |
3cf29f61 RS |
5440 | XSETFASTINT (start, BEGV); |
5441 | XSETFASTINT (end, ZV); | |
6fc6f94b RS |
5442 | annotations = Qnil; |
5443 | } | |
d6a3cc15 RS |
5444 | Flength (res); /* Check basic validity of return value */ |
5445 | annotations = merge (annotations, res, Qcar_less_than_car); | |
28c3eb5a | 5446 | p = XCDR (p); |
d6a3cc15 | 5447 | } |
0d420e88 BG |
5448 | |
5449 | /* Now do the same for annotation functions implied by the file-format */ | |
f844ba4e LT |
5450 | if (auto_saving && (!EQ (current_buffer->auto_save_file_format, Qt))) |
5451 | p = current_buffer->auto_save_file_format; | |
0d420e88 BG |
5452 | else |
5453 | p = current_buffer->file_format; | |
28c3eb5a | 5454 | for (i = 0; CONSP (p); p = XCDR (p), ++i) |
0d420e88 BG |
5455 | { |
5456 | struct buffer *given_buffer = current_buffer; | |
efdc16c9 | 5457 | |
0d420e88 | 5458 | Vwrite_region_annotations_so_far = annotations; |
532ed661 GM |
5459 | |
5460 | /* Value is either a list of annotations or nil if the function | |
5461 | has written annotations to a temporary buffer, which is now | |
5462 | current. */ | |
28c3eb5a | 5463 | res = call5 (Qformat_annotate_function, XCAR (p), start, end, |
532ed661 | 5464 | original_buffer, make_number (i)); |
0d420e88 BG |
5465 | if (current_buffer != given_buffer) |
5466 | { | |
3cf29f61 RS |
5467 | XSETFASTINT (start, BEGV); |
5468 | XSETFASTINT (end, ZV); | |
0d420e88 BG |
5469 | annotations = Qnil; |
5470 | } | |
efdc16c9 | 5471 | |
532ed661 GM |
5472 | if (CONSP (res)) |
5473 | annotations = merge (annotations, res, Qcar_less_than_car); | |
0d420e88 | 5474 | } |
6fdaa9a0 | 5475 | |
236a12f2 SM |
5476 | UNGCPRO; |
5477 | return annotations; | |
5478 | } | |
5479 | ||
ec7adf26 | 5480 | \f |
ce51c54c KH |
5481 | /* Write to descriptor DESC the NCHARS chars starting at POS of STRING. |
5482 | If STRING is nil, POS is the character position in the current buffer. | |
d6a3cc15 | 5483 | Intersperse with them the annotations from *ANNOT |
ce51c54c | 5484 | which fall within the range of POS to POS + NCHARS, |
d6a3cc15 RS |
5485 | each at its appropriate position. |
5486 | ||
ec7adf26 RS |
5487 | We modify *ANNOT by discarding elements as we use them up. |
5488 | ||
d6a3cc15 RS |
5489 | The return value is negative in case of system call failure. */ |
5490 | ||
ec7adf26 | 5491 | static int |
ce51c54c | 5492 | a_write (desc, string, pos, nchars, annot, coding) |
d6a3cc15 | 5493 | int desc; |
ce51c54c KH |
5494 | Lisp_Object string; |
5495 | register int nchars; | |
5496 | int pos; | |
d6a3cc15 | 5497 | Lisp_Object *annot; |
6fdaa9a0 | 5498 | struct coding_system *coding; |
d6a3cc15 RS |
5499 | { |
5500 | Lisp_Object tem; | |
5501 | int nextpos; | |
ce51c54c | 5502 | int lastpos = pos + nchars; |
d6a3cc15 | 5503 | |
eb15aa18 | 5504 | while (NILP (*annot) || CONSP (*annot)) |
d6a3cc15 RS |
5505 | { |
5506 | tem = Fcar_safe (Fcar (*annot)); | |
ce51c54c | 5507 | nextpos = pos - 1; |
ec7adf26 | 5508 | if (INTEGERP (tem)) |
ce51c54c | 5509 | nextpos = XFASTINT (tem); |
ec7adf26 RS |
5510 | |
5511 | /* If there are no more annotations in this range, | |
5512 | output the rest of the range all at once. */ | |
ce51c54c KH |
5513 | if (! (nextpos >= pos && nextpos <= lastpos)) |
5514 | return e_write (desc, string, pos, lastpos, coding); | |
ec7adf26 RS |
5515 | |
5516 | /* Output buffer text up to the next annotation's position. */ | |
ce51c54c | 5517 | if (nextpos > pos) |
d6a3cc15 | 5518 | { |
055a28c9 | 5519 | if (0 > e_write (desc, string, pos, nextpos, coding)) |
d6a3cc15 | 5520 | return -1; |
ce51c54c | 5521 | pos = nextpos; |
d6a3cc15 | 5522 | } |
ec7adf26 | 5523 | /* Output the annotation. */ |
d6a3cc15 RS |
5524 | tem = Fcdr (Fcar (*annot)); |
5525 | if (STRINGP (tem)) | |
5526 | { | |
d5db4077 | 5527 | if (0 > e_write (desc, tem, 0, SCHARS (tem), coding)) |
d6a3cc15 RS |
5528 | return -1; |
5529 | } | |
5530 | *annot = Fcdr (*annot); | |
5531 | } | |
dfcf069d | 5532 | return 0; |
d6a3cc15 RS |
5533 | } |
5534 | ||
6fdaa9a0 | 5535 | |
ce51c54c KH |
5536 | /* Write text in the range START and END into descriptor DESC, |
5537 | encoding them with coding system CODING. If STRING is nil, START | |
5538 | and END are character positions of the current buffer, else they | |
5539 | are indexes to the string STRING. */ | |
ec7adf26 RS |
5540 | |
5541 | static int | |
ce51c54c | 5542 | e_write (desc, string, start, end, coding) |
570d7624 | 5543 | int desc; |
ce51c54c KH |
5544 | Lisp_Object string; |
5545 | int start, end; | |
6fdaa9a0 | 5546 | struct coding_system *coding; |
570d7624 | 5547 | { |
ce51c54c KH |
5548 | if (STRINGP (string)) |
5549 | { | |
db327c7e | 5550 | start = 0; |
8f924df7 | 5551 | end = SCHARS (string); |
ce51c54c | 5552 | } |
570d7624 | 5553 | |
6fdaa9a0 KH |
5554 | /* We used to have a code for handling selective display here. But, |
5555 | now it is handled within encode_coding. */ | |
01ca97a2 KH |
5556 | |
5557 | while (start < end) | |
570d7624 | 5558 | { |
01ca97a2 | 5559 | if (STRINGP (string)) |
6ad568dd | 5560 | { |
01ca97a2 KH |
5561 | coding->src_multibyte = SCHARS (string) < SBYTES (string); |
5562 | if (CODING_REQUIRE_ENCODING (coding)) | |
5563 | { | |
5564 | encode_coding_object (coding, string, | |
5565 | start, string_char_to_byte (string, start), | |
5566 | end, string_char_to_byte (string, end), Qt); | |
5567 | } | |
5568 | else | |
5569 | { | |
5570 | coding->dst_object = string; | |
5571 | coding->consumed_char = SCHARS (string); | |
5572 | coding->produced = SBYTES (string); | |
5573 | } | |
6ad568dd | 5574 | } |
db327c7e | 5575 | else |
6ad568dd | 5576 | { |
01ca97a2 KH |
5577 | int start_byte = CHAR_TO_BYTE (start); |
5578 | int end_byte = CHAR_TO_BYTE (end); | |
b4132433 | 5579 | |
01ca97a2 KH |
5580 | coding->src_multibyte = (end - start) < (end_byte - start_byte); |
5581 | if (CODING_REQUIRE_ENCODING (coding)) | |
5582 | { | |
5583 | encode_coding_object (coding, Fcurrent_buffer (), | |
5584 | start, start_byte, end, end_byte, Qt); | |
5585 | } | |
5586 | else | |
5587 | { | |
5588 | coding->dst_object = Qnil; | |
5589 | coding->dst_pos_byte = start_byte; | |
5590 | if (start >= GPT || end <= GPT) | |
5591 | { | |
5592 | coding->consumed_char = end - start; | |
5593 | coding->produced = end_byte - start_byte; | |
5594 | } | |
5595 | else | |
5596 | { | |
5597 | coding->consumed_char = GPT - start; | |
5598 | coding->produced = GPT_BYTE - start_byte; | |
5599 | } | |
5600 | } | |
c185d744 | 5601 | } |
01ca97a2 KH |
5602 | |
5603 | if (coding->produced > 0) | |
c185d744 | 5604 | { |
01ca97a2 KH |
5605 | coding->produced -= |
5606 | emacs_write (desc, | |
5607 | STRINGP (coding->dst_object) | |
5608 | ? SDATA (coding->dst_object) | |
5609 | : BYTE_POS_ADDR (coding->dst_pos_byte), | |
5610 | coding->produced); | |
5611 | ||
5612 | if (coding->produced) | |
5613 | return -1; | |
570d7624 | 5614 | } |
01ca97a2 | 5615 | start += coding->consumed_char; |
c185d744 KH |
5616 | } |
5617 | ||
5618 | return 0; | |
570d7624 | 5619 | } |
ec7adf26 | 5620 | \f |
570d7624 | 5621 | DEFUN ("verify-visited-file-modtime", Fverify_visited_file_modtime, |
8c1a1077 PJ |
5622 | Sverify_visited_file_modtime, 1, 1, 0, |
5623 | doc: /* Return t if last mod time of BUF's visited file matches what BUF records. | |
6b61353c KH |
5624 | This means that the file has not been changed since it was visited or saved. |
5625 | See Info node `(elisp)Modification Time' for more details. */) | |
8c1a1077 | 5626 | (buf) |
570d7624 JB |
5627 | Lisp_Object buf; |
5628 | { | |
5629 | struct buffer *b; | |
5630 | struct stat st; | |
32f4334d | 5631 | Lisp_Object handler; |
b1d1b865 | 5632 | Lisp_Object filename; |
570d7624 | 5633 | |
b7826503 | 5634 | CHECK_BUFFER (buf); |
570d7624 JB |
5635 | b = XBUFFER (buf); |
5636 | ||
93c30b5f | 5637 | if (!STRINGP (b->filename)) return Qt; |
570d7624 JB |
5638 | if (b->modtime == 0) return Qt; |
5639 | ||
32f4334d RS |
5640 | /* If the file name has special constructs in it, |
5641 | call the corresponding file handler. */ | |
49307295 KH |
5642 | handler = Ffind_file_name_handler (b->filename, |
5643 | Qverify_visited_file_modtime); | |
32f4334d | 5644 | if (!NILP (handler)) |
09121adc | 5645 | return call2 (handler, Qverify_visited_file_modtime, buf); |
32f4334d | 5646 | |
b1d1b865 RS |
5647 | filename = ENCODE_FILE (b->filename); |
5648 | ||
d5db4077 | 5649 | if (stat (SDATA (filename), &st) < 0) |
570d7624 JB |
5650 | { |
5651 | /* If the file doesn't exist now and didn't exist before, | |
5652 | we say that it isn't modified, provided the error is a tame one. */ | |
5653 | if (errno == ENOENT || errno == EACCES || errno == ENOTDIR) | |
5654 | st.st_mtime = -1; | |
5655 | else | |
5656 | st.st_mtime = 0; | |
5657 | } | |
5658 | if (st.st_mtime == b->modtime | |
5659 | /* If both are positive, accept them if they are off by one second. */ | |
5660 | || (st.st_mtime > 0 && b->modtime > 0 | |
5661 | && (st.st_mtime == b->modtime + 1 | |
5662 | || st.st_mtime == b->modtime - 1))) | |
5663 | return Qt; | |
5664 | return Qnil; | |
5665 | } | |
5666 | ||
5667 | DEFUN ("clear-visited-file-modtime", Fclear_visited_file_modtime, | |
8c1a1077 PJ |
5668 | Sclear_visited_file_modtime, 0, 0, 0, |
5669 | doc: /* Clear out records of last mod time of visited file. | |
5670 | Next attempt to save will certainly not complain of a discrepancy. */) | |
5671 | () | |
570d7624 JB |
5672 | { |
5673 | current_buffer->modtime = 0; | |
5674 | return Qnil; | |
5675 | } | |
5676 | ||
f5d5eccf | 5677 | DEFUN ("visited-file-modtime", Fvisited_file_modtime, |
8c1a1077 PJ |
5678 | Svisited_file_modtime, 0, 0, 0, |
5679 | doc: /* Return the current buffer's recorded visited file modification time. | |
e5fcddc8 | 5680 | The value is a list of the form (HIGH LOW), like the time values |
6b61353c KH |
5681 | that `file-attributes' returns. If the current buffer has no recorded |
5682 | file modification time, this function returns 0. | |
5683 | See Info node `(elisp)Modification Time' for more details. */) | |
8c1a1077 | 5684 | () |
f5d5eccf | 5685 | { |
73ff9d42 RS |
5686 | if (! current_buffer->modtime) |
5687 | return make_number (0); | |
5688 | return make_time ((time_t) current_buffer->modtime); | |
f5d5eccf RS |
5689 | } |
5690 | ||
570d7624 | 5691 | DEFUN ("set-visited-file-modtime", Fset_visited_file_modtime, |
8c1a1077 PJ |
5692 | Sset_visited_file_modtime, 0, 1, 0, |
5693 | doc: /* Update buffer's recorded modification time from the visited file's time. | |
5694 | Useful if the buffer was not read from the file normally | |
5695 | or if the file itself has been changed for some known benign reason. | |
5696 | An argument specifies the modification time value to use | |
5697 | \(instead of that of the visited file), in the form of a list | |
5698 | \(HIGH . LOW) or (HIGH LOW). */) | |
5699 | (time_list) | |
f5d5eccf | 5700 | Lisp_Object time_list; |
570d7624 | 5701 | { |
f5d5eccf RS |
5702 | if (!NILP (time_list)) |
5703 | current_buffer->modtime = cons_to_long (time_list); | |
5704 | else | |
5705 | { | |
5706 | register Lisp_Object filename; | |
5707 | struct stat st; | |
5708 | Lisp_Object handler; | |
570d7624 | 5709 | |
f5d5eccf | 5710 | filename = Fexpand_file_name (current_buffer->filename, Qnil); |
32f4334d | 5711 | |
f5d5eccf RS |
5712 | /* If the file name has special constructs in it, |
5713 | call the corresponding file handler. */ | |
49307295 | 5714 | handler = Ffind_file_name_handler (filename, Qset_visited_file_modtime); |
f5d5eccf | 5715 | if (!NILP (handler)) |
caf3c431 | 5716 | /* The handler can find the file name the same way we did. */ |
76c881b0 | 5717 | return call2 (handler, Qset_visited_file_modtime, Qnil); |
b1d1b865 RS |
5718 | |
5719 | filename = ENCODE_FILE (filename); | |
5720 | ||
d5db4077 | 5721 | if (stat (SDATA (filename), &st) >= 0) |
f5d5eccf RS |
5722 | current_buffer->modtime = st.st_mtime; |
5723 | } | |
570d7624 JB |
5724 | |
5725 | return Qnil; | |
5726 | } | |
5727 | \f | |
5728 | Lisp_Object | |
d7f31e22 GM |
5729 | auto_save_error (error) |
5730 | Lisp_Object error; | |
570d7624 | 5731 | { |
d7f31e22 GM |
5732 | Lisp_Object args[3], msg; |
5733 | int i, nbytes; | |
5734 | struct gcpro gcpro1; | |
dfc22242 KS |
5735 | char *msgbuf; |
5736 | USE_SAFE_ALLOCA; | |
efdc16c9 | 5737 | |
ca730bf0 CY |
5738 | auto_save_error_occurred = 1; |
5739 | ||
385ed61f | 5740 | ring_bell (XFRAME (selected_frame)); |
efdc16c9 | 5741 | |
d7f31e22 GM |
5742 | args[0] = build_string ("Auto-saving %s: %s"); |
5743 | args[1] = current_buffer->name; | |
5744 | args[2] = Ferror_message_string (error); | |
5745 | msg = Fformat (3, args); | |
5746 | GCPRO1 (msg); | |
d5db4077 | 5747 | nbytes = SBYTES (msg); |
dfc22242 KS |
5748 | SAFE_ALLOCA (msgbuf, char *, nbytes); |
5749 | bcopy (SDATA (msg), msgbuf, nbytes); | |
d7f31e22 GM |
5750 | |
5751 | for (i = 0; i < 3; ++i) | |
5752 | { | |
5753 | if (i == 0) | |
dfc22242 | 5754 | message2 (msgbuf, nbytes, STRING_MULTIBYTE (msg)); |
d7f31e22 | 5755 | else |
dfc22242 | 5756 | message2_nolog (msgbuf, nbytes, STRING_MULTIBYTE (msg)); |
d7f31e22 GM |
5757 | Fsleep_for (make_number (1), Qnil); |
5758 | } | |
5759 | ||
e01f7773 | 5760 | SAFE_FREE (); |
d7f31e22 | 5761 | UNGCPRO; |
570d7624 JB |
5762 | return Qnil; |
5763 | } | |
5764 | ||
5765 | Lisp_Object | |
5766 | auto_save_1 () | |
5767 | { | |
570d7624 | 5768 | struct stat st; |
d4a42098 KS |
5769 | Lisp_Object modes; |
5770 | ||
5771 | auto_save_mode_bits = 0666; | |
570d7624 JB |
5772 | |
5773 | /* Get visited file's mode to become the auto save file's mode. */ | |
d4a42098 KS |
5774 | if (! NILP (current_buffer->filename)) |
5775 | { | |
5776 | if (stat (SDATA (current_buffer->filename), &st) >= 0) | |
5777 | /* But make sure we can overwrite it later! */ | |
5778 | auto_save_mode_bits = st.st_mode | 0600; | |
5779 | else if ((modes = Ffile_modes (current_buffer->filename), | |
5780 | INTEGERP (modes))) | |
5781 | /* Remote files don't cooperate with stat. */ | |
5782 | auto_save_mode_bits = XINT (modes) | 0600; | |
5783 | } | |
570d7624 JB |
5784 | |
5785 | return | |
5786 | Fwrite_region (Qnil, Qnil, | |
5787 | current_buffer->auto_save_file_name, | |
de1d0127 | 5788 | Qnil, Qlambda, Qnil, Qnil); |
570d7624 JB |
5789 | } |
5790 | ||
e54d3b5d | 5791 | static Lisp_Object |
fff7e982 KS |
5792 | do_auto_save_unwind (arg) /* used as unwind-protect function */ |
5793 | Lisp_Object arg; | |
e54d3b5d | 5794 | { |
fff7e982 | 5795 | FILE *stream = (FILE *) XSAVE_VALUE (arg)->pointer; |
3be3c08e | 5796 | auto_saving = 0; |
fff7e982 | 5797 | if (stream != NULL) |
aab12958 YM |
5798 | { |
5799 | BLOCK_INPUT; | |
5800 | fclose (stream); | |
5801 | UNBLOCK_INPUT; | |
5802 | } | |
e54d3b5d RS |
5803 | return Qnil; |
5804 | } | |
5805 | ||
a8c828be RS |
5806 | static Lisp_Object |
5807 | do_auto_save_unwind_1 (value) /* used as unwind-protect function */ | |
5808 | Lisp_Object value; | |
5809 | { | |
5810 | minibuffer_auto_raise = XINT (value); | |
5811 | return Qnil; | |
5812 | } | |
5813 | ||
5794dd61 RS |
5814 | static Lisp_Object |
5815 | do_auto_save_make_dir (dir) | |
5816 | Lisp_Object dir; | |
5817 | { | |
26816cbf SG |
5818 | Lisp_Object mode; |
5819 | ||
5820 | call2 (Qmake_directory, dir, Qt); | |
5821 | XSETFASTINT (mode, 0700); | |
5822 | return Fset_file_modes (dir, mode); | |
5794dd61 RS |
5823 | } |
5824 | ||
5825 | static Lisp_Object | |
5826 | do_auto_save_eh (ignore) | |
5827 | Lisp_Object ignore; | |
5828 | { | |
5829 | return Qnil; | |
5830 | } | |
5831 | ||
570d7624 | 5832 | DEFUN ("do-auto-save", Fdo_auto_save, Sdo_auto_save, 0, 2, "", |
8c1a1077 PJ |
5833 | doc: /* Auto-save all buffers that need it. |
5834 | This is all buffers that have auto-saving enabled | |
5835 | and are changed since last auto-saved. | |
5836 | Auto-saving writes the buffer into a file | |
5837 | so that your editing is not lost if the system crashes. | |
5838 | This file is not the file you visited; that changes only when you save. | |
5839 | Normally we run the normal hook `auto-save-hook' before saving. | |
5840 | ||
5841 | A non-nil NO-MESSAGE argument means do not print any message if successful. | |
5842 | A non-nil CURRENT-ONLY argument means save only current buffer. */) | |
5843 | (no_message, current_only) | |
17857782 | 5844 | Lisp_Object no_message, current_only; |
570d7624 JB |
5845 | { |
5846 | struct buffer *old = current_buffer, *b; | |
5847 | Lisp_Object tail, buf; | |
5848 | int auto_saved = 0; | |
f14b1c68 | 5849 | int do_handled_files; |
ff4c9993 | 5850 | Lisp_Object oquit; |
fff7e982 | 5851 | FILE *stream = NULL; |
aed13378 | 5852 | int count = SPECPDL_INDEX (); |
a8c828be | 5853 | int orig_minibuffer_auto_raise = minibuffer_auto_raise; |
5794dd61 | 5854 | int old_message_p = 0; |
d57563b6 | 5855 | struct gcpro gcpro1, gcpro2; |
38da540d RS |
5856 | |
5857 | if (max_specpdl_size < specpdl_size + 40) | |
5858 | max_specpdl_size = specpdl_size + 40; | |
5859 | ||
5860 | if (minibuf_level) | |
5861 | no_message = Qt; | |
5862 | ||
5794dd61 RS |
5863 | if (NILP (no_message)) |
5864 | { | |
5865 | old_message_p = push_message (); | |
5866 | record_unwind_protect (pop_message_unwind, Qnil); | |
5867 | } | |
efdc16c9 | 5868 | |
ff4c9993 RS |
5869 | /* Ordinarily don't quit within this function, |
5870 | but don't make it impossible to quit (in case we get hung in I/O). */ | |
5871 | oquit = Vquit_flag; | |
5872 | Vquit_flag = Qnil; | |
570d7624 JB |
5873 | |
5874 | /* No GCPRO needed, because (when it matters) all Lisp_Object variables | |
5875 | point to non-strings reached from Vbuffer_alist. */ | |
5876 | ||
265a9e55 | 5877 | if (!NILP (Vrun_hooks)) |
570d7624 JB |
5878 | call1 (Vrun_hooks, intern ("auto-save-hook")); |
5879 | ||
e54d3b5d RS |
5880 | if (STRINGP (Vauto_save_list_file_name)) |
5881 | { | |
0894672f | 5882 | Lisp_Object listfile; |
efdc16c9 | 5883 | |
258fd2cb | 5884 | listfile = Fexpand_file_name (Vauto_save_list_file_name, Qnil); |
0894672f GM |
5885 | |
5886 | /* Don't try to create the directory when shutting down Emacs, | |
5887 | because creating the directory might signal an error, and | |
5888 | that would leave Emacs in a strange state. */ | |
5889 | if (!NILP (Vrun_hooks)) | |
5890 | { | |
5891 | Lisp_Object dir; | |
d57563b6 RS |
5892 | dir = Qnil; |
5893 | GCPRO2 (dir, listfile); | |
0894672f GM |
5894 | dir = Ffile_name_directory (listfile); |
5895 | if (NILP (Ffile_directory_p (dir))) | |
5794dd61 RS |
5896 | internal_condition_case_1 (do_auto_save_make_dir, |
5897 | dir, Fcons (Fcons (Qfile_error, Qnil), Qnil), | |
5898 | do_auto_save_eh); | |
d57563b6 | 5899 | UNGCPRO; |
0894672f | 5900 | } |
efdc16c9 | 5901 | |
d5db4077 | 5902 | stream = fopen (SDATA (listfile), "w"); |
1b335d29 | 5903 | } |
199607e4 | 5904 | |
fff7e982 KS |
5905 | record_unwind_protect (do_auto_save_unwind, |
5906 | make_save_value (stream, 0)); | |
a8c828be RS |
5907 | record_unwind_protect (do_auto_save_unwind_1, |
5908 | make_number (minibuffer_auto_raise)); | |
5909 | minibuffer_auto_raise = 0; | |
3be3c08e | 5910 | auto_saving = 1; |
ca730bf0 | 5911 | auto_save_error_occurred = 0; |
3be3c08e | 5912 | |
6b61353c KH |
5913 | /* On first pass, save all files that don't have handlers. |
5914 | On second pass, save all files that do have handlers. | |
5915 | ||
5916 | If Emacs is crashing, the handlers may tweak what is causing | |
5917 | Emacs to crash in the first place, and it would be a shame if | |
5918 | Emacs failed to autosave perfectly ordinary files because it | |
5919 | couldn't handle some ange-ftp'd file. */ | |
5920 | ||
f14b1c68 | 5921 | for (do_handled_files = 0; do_handled_files < 2; do_handled_files++) |
8e50cc2d | 5922 | for (tail = Vbuffer_alist; CONSP (tail); tail = XCDR (tail)) |
f14b1c68 | 5923 | { |
03699b14 | 5924 | buf = XCDR (XCAR (tail)); |
f14b1c68 | 5925 | b = XBUFFER (buf); |
199607e4 | 5926 | |
e54d3b5d | 5927 | /* Record all the buffers that have auto save mode |
258fd2cb RS |
5928 | in the special file that lists them. For each of these buffers, |
5929 | Record visited name (if any) and auto save name. */ | |
93c30b5f | 5930 | if (STRINGP (b->auto_save_file_name) |
1b335d29 | 5931 | && stream != NULL && do_handled_files == 0) |
e54d3b5d | 5932 | { |
aab12958 | 5933 | BLOCK_INPUT; |
258fd2cb RS |
5934 | if (!NILP (b->filename)) |
5935 | { | |
d5db4077 KR |
5936 | fwrite (SDATA (b->filename), 1, |
5937 | SBYTES (b->filename), stream); | |
258fd2cb | 5938 | } |
1b335d29 | 5939 | putc ('\n', stream); |
d5db4077 KR |
5940 | fwrite (SDATA (b->auto_save_file_name), 1, |
5941 | SBYTES (b->auto_save_file_name), stream); | |
1b335d29 | 5942 | putc ('\n', stream); |
aab12958 | 5943 | UNBLOCK_INPUT; |
e54d3b5d | 5944 | } |
17857782 | 5945 | |
f14b1c68 JB |
5946 | if (!NILP (current_only) |
5947 | && b != current_buffer) | |
5948 | continue; | |
e54d3b5d | 5949 | |
95385625 RS |
5950 | /* Don't auto-save indirect buffers. |
5951 | The base buffer takes care of it. */ | |
5952 | if (b->base_buffer) | |
5953 | continue; | |
5954 | ||
f14b1c68 JB |
5955 | /* Check for auto save enabled |
5956 | and file changed since last auto save | |
5957 | and file changed since last real save. */ | |
93c30b5f | 5958 | if (STRINGP (b->auto_save_file_name) |
95385625 | 5959 | && BUF_SAVE_MODIFF (b) < BUF_MODIFF (b) |
f14b1c68 | 5960 | && b->auto_save_modified < BUF_MODIFF (b) |
82c2d839 RS |
5961 | /* -1 means we've turned off autosaving for a while--see below. */ |
5962 | && XINT (b->save_length) >= 0 | |
f14b1c68 | 5963 | && (do_handled_files |
49307295 KH |
5964 | || NILP (Ffind_file_name_handler (b->auto_save_file_name, |
5965 | Qwrite_region)))) | |
f14b1c68 | 5966 | { |
b60247d9 RS |
5967 | EMACS_TIME before_time, after_time; |
5968 | ||
5969 | EMACS_GET_TIME (before_time); | |
5970 | ||
5971 | /* If we had a failure, don't try again for 20 minutes. */ | |
5972 | if (b->auto_save_failure_time >= 0 | |
5973 | && EMACS_SECS (before_time) - b->auto_save_failure_time < 1200) | |
5974 | continue; | |
5975 | ||
f14b1c68 JB |
5976 | if ((XFASTINT (b->save_length) * 10 |
5977 | > (BUF_Z (b) - BUF_BEG (b)) * 13) | |
5978 | /* A short file is likely to change a large fraction; | |
5979 | spare the user annoying messages. */ | |
5980 | && XFASTINT (b->save_length) > 5000 | |
5981 | /* These messages are frequent and annoying for `*mail*'. */ | |
5982 | && !EQ (b->filename, Qnil) | |
5983 | && NILP (no_message)) | |
5984 | { | |
5985 | /* It has shrunk too much; turn off auto-saving here. */ | |
a8c828be | 5986 | minibuffer_auto_raise = orig_minibuffer_auto_raise; |
fd91d0d4 | 5987 | message_with_string ("Buffer %s has shrunk a lot; auto save disabled in that buffer until next real save", |
60d67b83 | 5988 | b->name, 1); |
a8c828be | 5989 | minibuffer_auto_raise = 0; |
82c2d839 RS |
5990 | /* Turn off auto-saving until there's a real save, |
5991 | and prevent any more warnings. */ | |
46283abe | 5992 | XSETINT (b->save_length, -1); |
f14b1c68 JB |
5993 | Fsleep_for (make_number (1), Qnil); |
5994 | continue; | |
5995 | } | |
5996 | set_buffer_internal (b); | |
5997 | if (!auto_saved && NILP (no_message)) | |
5998 | message1 ("Auto-saving..."); | |
5999 | internal_condition_case (auto_save_1, Qt, auto_save_error); | |
6000 | auto_saved++; | |
6001 | b->auto_save_modified = BUF_MODIFF (b); | |
2acfd7ae | 6002 | XSETFASTINT (current_buffer->save_length, Z - BEG); |
f14b1c68 | 6003 | set_buffer_internal (old); |
b60247d9 RS |
6004 | |
6005 | EMACS_GET_TIME (after_time); | |
6006 | ||
6007 | /* If auto-save took more than 60 seconds, | |
6008 | assume it was an NFS failure that got a timeout. */ | |
6009 | if (EMACS_SECS (after_time) - EMACS_SECS (before_time) > 60) | |
6010 | b->auto_save_failure_time = EMACS_SECS (after_time); | |
f14b1c68 JB |
6011 | } |
6012 | } | |
570d7624 | 6013 | |
b67f2ca5 RS |
6014 | /* Prevent another auto save till enough input events come in. */ |
6015 | record_auto_save (); | |
570d7624 | 6016 | |
17857782 | 6017 | if (auto_saved && NILP (no_message)) |
f05b275b | 6018 | { |
5794dd61 | 6019 | if (old_message_p) |
31f3d831 | 6020 | { |
5794dd61 RS |
6021 | /* If we are going to restore an old message, |
6022 | give time to read ours. */ | |
83f8d903 | 6023 | sit_for (make_number (1), 0, 0); |
c71106e5 | 6024 | restore_message (); |
31f3d831 | 6025 | } |
ca730bf0 CY |
6026 | else if (!auto_save_error_occurred) |
6027 | /* Don't overwrite the error message if an error occurred. */ | |
5794dd61 RS |
6028 | /* If we displayed a message and then restored a state |
6029 | with no message, leave a "done" message on the screen. */ | |
f05b275b KH |
6030 | message1 ("Auto-saving...done"); |
6031 | } | |
570d7624 | 6032 | |
ff4c9993 RS |
6033 | Vquit_flag = oquit; |
6034 | ||
5794dd61 | 6035 | /* This restores the message-stack status. */ |
e54d3b5d | 6036 | unbind_to (count, Qnil); |
570d7624 JB |
6037 | return Qnil; |
6038 | } | |
6039 | ||
6040 | DEFUN ("set-buffer-auto-saved", Fset_buffer_auto_saved, | |
8c1a1077 PJ |
6041 | Sset_buffer_auto_saved, 0, 0, 0, |
6042 | doc: /* Mark current buffer as auto-saved with its current text. | |
6043 | No auto-save file will be written until the buffer changes again. */) | |
6044 | () | |
570d7624 JB |
6045 | { |
6046 | current_buffer->auto_save_modified = MODIFF; | |
2acfd7ae | 6047 | XSETFASTINT (current_buffer->save_length, Z - BEG); |
b60247d9 RS |
6048 | current_buffer->auto_save_failure_time = -1; |
6049 | return Qnil; | |
6050 | } | |
6051 | ||
6052 | DEFUN ("clear-buffer-auto-save-failure", Fclear_buffer_auto_save_failure, | |
8c1a1077 PJ |
6053 | Sclear_buffer_auto_save_failure, 0, 0, 0, |
6054 | doc: /* Clear any record of a recent auto-save failure in the current buffer. */) | |
6055 | () | |
b60247d9 RS |
6056 | { |
6057 | current_buffer->auto_save_failure_time = -1; | |
570d7624 JB |
6058 | return Qnil; |
6059 | } | |
6060 | ||
6061 | DEFUN ("recent-auto-save-p", Frecent_auto_save_p, Srecent_auto_save_p, | |
8c1a1077 | 6062 | 0, 0, 0, |
68780e2a RS |
6063 | doc: /* Return t if current buffer has been auto-saved recently. |
6064 | More precisely, if it has been auto-saved since last read from or saved | |
6065 | in the visited file. If the buffer has no visited file, | |
6066 | then any auto-save counts as "recent". */) | |
8c1a1077 | 6067 | () |
570d7624 | 6068 | { |
95385625 | 6069 | return (SAVE_MODIFF < current_buffer->auto_save_modified) ? Qt : Qnil; |
570d7624 JB |
6070 | } |
6071 | \f | |
6072 | /* Reading and completing file names */ | |
6073 | extern Lisp_Object Ffile_name_completion (), Ffile_name_all_completions (); | |
94b9aaa2 | 6074 | extern Lisp_Object Qcompletion_ignore_case; |
570d7624 | 6075 | |
6e710ae5 RS |
6076 | /* In the string VAL, change each $ to $$ and return the result. */ |
6077 | ||
6078 | static Lisp_Object | |
6079 | double_dollars (val) | |
6080 | Lisp_Object val; | |
6081 | { | |
19290c65 KR |
6082 | register const unsigned char *old; |
6083 | register unsigned char *new; | |
6e710ae5 RS |
6084 | register int n; |
6085 | int osize, count; | |
6086 | ||
d5db4077 | 6087 | osize = SBYTES (val); |
60d67b83 RS |
6088 | |
6089 | /* Count the number of $ characters. */ | |
d5db4077 | 6090 | for (n = osize, count = 0, old = SDATA (val); n > 0; n--) |
6e710ae5 RS |
6091 | if (*old++ == '$') count++; |
6092 | if (count > 0) | |
6093 | { | |
d5db4077 KR |
6094 | old = SDATA (val); |
6095 | val = make_uninit_multibyte_string (SCHARS (val) + count, | |
60d67b83 | 6096 | osize + count); |
d5db4077 | 6097 | new = SDATA (val); |
6e710ae5 RS |
6098 | for (n = osize; n > 0; n--) |
6099 | if (*old != '$') | |
6100 | *new++ = *old++; | |
6101 | else | |
6102 | { | |
6103 | *new++ = '$'; | |
6104 | *new++ = '$'; | |
6105 | old++; | |
6106 | } | |
6107 | } | |
6108 | return val; | |
6109 | } | |
6110 | ||
59ffe07d KS |
6111 | static Lisp_Object |
6112 | read_file_name_cleanup (arg) | |
6113 | Lisp_Object arg; | |
6114 | { | |
c4174fbb | 6115 | return (current_buffer->directory = arg); |
59ffe07d KS |
6116 | } |
6117 | ||
570d7624 | 6118 | DEFUN ("read-file-name-internal", Fread_file_name_internal, Sread_file_name_internal, |
8c1a1077 PJ |
6119 | 3, 3, 0, |
6120 | doc: /* Internal subroutine for read-file-name. Do not call this. */) | |
6121 | (string, dir, action) | |
570d7624 JB |
6122 | Lisp_Object string, dir, action; |
6123 | /* action is nil for complete, t for return list of completions, | |
6124 | lambda for verify final value */ | |
6125 | { | |
6126 | Lisp_Object name, specdir, realdir, val, orig_string; | |
09121adc | 6127 | int changed; |
8ce069f5 | 6128 | struct gcpro gcpro1, gcpro2, gcpro3, gcpro4, gcpro5; |
09121adc | 6129 | |
b7826503 | 6130 | CHECK_STRING (string); |
58cc3710 | 6131 | |
09121adc RS |
6132 | realdir = dir; |
6133 | name = string; | |
6134 | orig_string = Qnil; | |
6135 | specdir = Qnil; | |
6136 | changed = 0; | |
6137 | /* No need to protect ACTION--we only compare it with t and nil. */ | |
8ce069f5 | 6138 | GCPRO5 (string, realdir, name, specdir, orig_string); |
570d7624 | 6139 | |
d5db4077 | 6140 | if (SCHARS (string) == 0) |
570d7624 | 6141 | { |
570d7624 | 6142 | if (EQ (action, Qlambda)) |
09121adc RS |
6143 | { |
6144 | UNGCPRO; | |
6145 | return Qnil; | |
6146 | } | |
570d7624 JB |
6147 | } |
6148 | else | |
6149 | { | |
6150 | orig_string = string; | |
6151 | string = Fsubstitute_in_file_name (string); | |
09121adc | 6152 | changed = NILP (Fstring_equal (string, orig_string)); |
570d7624 | 6153 | name = Ffile_name_nondirectory (string); |
09121adc RS |
6154 | val = Ffile_name_directory (string); |
6155 | if (! NILP (val)) | |
6156 | realdir = Fexpand_file_name (val, realdir); | |
570d7624 JB |
6157 | } |
6158 | ||
265a9e55 | 6159 | if (NILP (action)) |
570d7624 JB |
6160 | { |
6161 | specdir = Ffile_name_directory (string); | |
aaf469fc | 6162 | val = Ffile_name_completion (name, realdir, Vread_file_name_predicate); |
09121adc | 6163 | UNGCPRO; |
93c30b5f | 6164 | if (!STRINGP (val)) |
570d7624 | 6165 | { |
09121adc | 6166 | if (changed) |
dbd04e01 | 6167 | return double_dollars (string); |
09121adc | 6168 | return val; |
570d7624 JB |
6169 | } |
6170 | ||
265a9e55 | 6171 | if (!NILP (specdir)) |
570d7624 JB |
6172 | val = concat2 (specdir, val); |
6173 | #ifndef VMS | |
6e710ae5 RS |
6174 | return double_dollars (val); |
6175 | #else /* not VMS */ | |
09121adc | 6176 | return val; |
6e710ae5 | 6177 | #endif /* not VMS */ |
570d7624 | 6178 | } |
09121adc | 6179 | UNGCPRO; |
570d7624 JB |
6180 | |
6181 | if (EQ (action, Qt)) | |
59ffe07d KS |
6182 | { |
6183 | Lisp_Object all = Ffile_name_all_completions (name, realdir); | |
6184 | Lisp_Object comp; | |
6185 | int count; | |
6186 | ||
6187 | if (NILP (Vread_file_name_predicate) | |
6188 | || EQ (Vread_file_name_predicate, Qfile_exists_p)) | |
6189 | return all; | |
da46f04f KS |
6190 | |
6191 | #ifndef VMS | |
6192 | if (EQ (Vread_file_name_predicate, Qfile_directory_p)) | |
6193 | { | |
efdc16c9 | 6194 | /* Brute-force speed up for directory checking: |
da46f04f KS |
6195 | Discard strings which don't end in a slash. */ |
6196 | for (comp = Qnil; CONSP (all); all = XCDR (all)) | |
6197 | { | |
6198 | Lisp_Object tem = XCAR (all); | |
6199 | int len; | |
6200 | if (STRINGP (tem) && | |
db8ab0f5 | 6201 | (len = SBYTES (tem), len > 0) && |
d5db4077 | 6202 | IS_DIRECTORY_SEP (SREF (tem, len-1))) |
da46f04f KS |
6203 | comp = Fcons (tem, comp); |
6204 | } | |
6205 | } | |
6206 | else | |
6207 | #endif | |
6208 | { | |
6209 | /* Must do it the hard (and slow) way. */ | |
a3911e8c | 6210 | Lisp_Object tem; |
da46f04f | 6211 | GCPRO3 (all, comp, specdir); |
aed13378 | 6212 | count = SPECPDL_INDEX (); |
da46f04f KS |
6213 | record_unwind_protect (read_file_name_cleanup, current_buffer->directory); |
6214 | current_buffer->directory = realdir; | |
6215 | for (comp = Qnil; CONSP (all); all = XCDR (all)) | |
a3911e8c KR |
6216 | { |
6217 | tem = call1 (Vread_file_name_predicate, XCAR (all)); | |
6218 | if (!NILP (tem)) | |
6219 | comp = Fcons (XCAR (all), comp); | |
6220 | } | |
da46f04f KS |
6221 | unbind_to (count, Qnil); |
6222 | UNGCPRO; | |
6223 | } | |
59ffe07d KS |
6224 | return Fnreverse (comp); |
6225 | } | |
6226 | ||
570d7624 JB |
6227 | /* Only other case actually used is ACTION = lambda */ |
6228 | #ifdef VMS | |
6229 | /* Supposedly this helps commands such as `cd' that read directory names, | |
6230 | but can someone explain how it helps them? -- RMS */ | |
d5db4077 | 6231 | if (SCHARS (name) == 0) |
570d7624 JB |
6232 | return Qt; |
6233 | #endif /* VMS */ | |
6b61353c | 6234 | string = Fexpand_file_name (string, dir); |
59ffe07d KS |
6235 | if (!NILP (Vread_file_name_predicate)) |
6236 | return call1 (Vread_file_name_predicate, string); | |
570d7624 JB |
6237 | return Ffile_exists_p (string); |
6238 | } | |
6239 | ||
88208bb8 JD |
6240 | DEFUN ("next-read-file-uses-dialog-p", Fnext_read_file_uses_dialog_p, |
6241 | Snext_read_file_uses_dialog_p, 0, 0, 0, | |
6242 | doc: /* Return t if a call to `read-file-name' will use a dialog. | |
6243 | The return value is only relevant for a call to `read-file-name' that happens | |
6244 | before any other event (mouse or keypress) is handeled. */) | |
6245 | () | |
6246 | { | |
b15325b2 | 6247 | #if defined (USE_MOTIF) || defined (HAVE_NTGUI) || defined (USE_GTK) || defined (HAVE_CARBON) |
88208bb8 JD |
6248 | if ((NILP (last_nonmenu_event) || CONSP (last_nonmenu_event)) |
6249 | && use_dialog_box | |
6250 | && use_file_dialog | |
6251 | && have_menus_p ()) | |
6252 | return Qt; | |
6253 | #endif | |
6254 | return Qnil; | |
6255 | } | |
d4a42098 | 6256 | |
59ffe07d | 6257 | DEFUN ("read-file-name", Fread_file_name, Sread_file_name, 1, 6, 0, |
8c1a1077 PJ |
6258 | doc: /* Read file name, prompting with PROMPT and completing in directory DIR. |
6259 | Value is not expanded---you must call `expand-file-name' yourself. | |
6b61353c KH |
6260 | Default name to DEFAULT-FILENAME if user exits the minibuffer with |
6261 | the same non-empty string that was inserted by this function. | |
8c1a1077 PJ |
6262 | (If DEFAULT-FILENAME is omitted, the visited file name is used, |
6263 | except that if INITIAL is specified, that combined with DIR is used.) | |
6b61353c KH |
6264 | If the user exits with an empty minibuffer, this function returns |
6265 | an empty string. (This can only happen if the user erased the | |
6266 | pre-inserted contents or if `insert-default-directory' is nil.) | |
8c1a1077 PJ |
6267 | Fourth arg MUSTMATCH non-nil means require existing file's name. |
6268 | Non-nil and non-t means also require confirmation after completion. | |
6269 | Fifth arg INITIAL specifies text to start with. | |
6b61353c KH |
6270 | If optional sixth arg PREDICATE is non-nil, possible completions and |
6271 | the resulting file name must satisfy (funcall PREDICATE NAME). | |
6272 | DIR should be an absolute directory name. It defaults to the value of | |
6273 | `default-directory'. | |
8c1a1077 PJ |
6274 | |
6275 | If this command was invoked with the mouse, use a file dialog box if | |
6276 | `use-dialog-box' is non-nil, and the window system or X toolkit in use | |
d35c2489 JPW |
6277 | provides a file dialog box. |
6278 | ||
6279 | See also `read-file-name-completion-ignore-case' | |
6280 | and `read-file-name-function'. */) | |
59ffe07d KS |
6281 | (prompt, dir, default_filename, mustmatch, initial, predicate) |
6282 | Lisp_Object prompt, dir, default_filename, mustmatch, initial, predicate; | |
570d7624 | 6283 | { |
8d6d9fef | 6284 | Lisp_Object val, insdef, tem; |
570d7624 JB |
6285 | struct gcpro gcpro1, gcpro2; |
6286 | register char *homedir; | |
d7231f93 | 6287 | Lisp_Object decoded_homedir; |
62f555a5 RS |
6288 | int replace_in_history = 0; |
6289 | int add_to_history = 0; | |
570d7624 JB |
6290 | int count; |
6291 | ||
265a9e55 | 6292 | if (NILP (dir)) |
570d7624 | 6293 | dir = current_buffer->directory; |
abd5b7f2 RS |
6294 | if (NILP (Ffile_name_absolute_p (dir))) |
6295 | dir = Fexpand_file_name (dir, Qnil); | |
3b7f6e60 | 6296 | if (NILP (default_filename)) |
abd5b7f2 RS |
6297 | default_filename |
6298 | = (!NILP (initial) | |
6299 | ? Fexpand_file_name (initial, dir) | |
6300 | : current_buffer->filename); | |
570d7624 JB |
6301 | |
6302 | /* If dir starts with user's homedir, change that to ~. */ | |
6303 | homedir = (char *) egetenv ("HOME"); | |
199607e4 | 6304 | #ifdef DOS_NT |
5990851d | 6305 | /* homedir can be NULL in temacs, since Vglobal_environment is not |
417c884a EZ |
6306 | yet set up. We shouldn't crash in that case. */ |
6307 | if (homedir != 0) | |
6308 | { | |
6309 | homedir = strcpy (alloca (strlen (homedir) + 1), homedir); | |
6310 | CORRECT_DIR_SEPS (homedir); | |
6311 | } | |
199607e4 | 6312 | #endif |
d7231f93 KH |
6313 | if (homedir != 0) |
6314 | decoded_homedir | |
6315 | = DECODE_FILE (make_unibyte_string (homedir, strlen (homedir))); | |
570d7624 | 6316 | if (homedir != 0 |
93c30b5f | 6317 | && STRINGP (dir) |
d7231f93 KH |
6318 | && !strncmp (SDATA (decoded_homedir), SDATA (dir), |
6319 | SBYTES (decoded_homedir)) | |
6320 | && IS_DIRECTORY_SEP (SREF (dir, SBYTES (decoded_homedir)))) | |
570d7624 | 6321 | { |
60204046 | 6322 | dir = Fsubstring (dir, make_number (SCHARS (decoded_homedir)), Qnil); |
d7231f93 | 6323 | dir = concat2 (build_string ("~"), dir); |
570d7624 | 6324 | } |
8d6d9fef AS |
6325 | /* Likewise for default_filename. */ |
6326 | if (homedir != 0 | |
6327 | && STRINGP (default_filename) | |
d7231f93 KH |
6328 | && !strncmp (SDATA (decoded_homedir), SDATA (default_filename), |
6329 | SBYTES (decoded_homedir)) | |
6330 | && IS_DIRECTORY_SEP (SREF (default_filename, SBYTES (decoded_homedir)))) | |
8d6d9fef AS |
6331 | { |
6332 | default_filename | |
d7231f93 | 6333 | = Fsubstring (default_filename, |
60204046 | 6334 | make_number (SCHARS (decoded_homedir)), Qnil); |
d7231f93 | 6335 | default_filename = concat2 (build_string ("~"), default_filename); |
8d6d9fef AS |
6336 | } |
6337 | if (!NILP (default_filename)) | |
b537a6c7 | 6338 | { |
b7826503 | 6339 | CHECK_STRING (default_filename); |
b537a6c7 RS |
6340 | default_filename = double_dollars (default_filename); |
6341 | } | |
570d7624 | 6342 | |
58cc3710 | 6343 | if (insert_default_directory && STRINGP (dir)) |
570d7624 JB |
6344 | { |
6345 | insdef = dir; | |
265a9e55 | 6346 | if (!NILP (initial)) |
570d7624 | 6347 | { |
15c65264 | 6348 | Lisp_Object args[2], pos; |
570d7624 JB |
6349 | |
6350 | args[0] = insdef; | |
6351 | args[1] = initial; | |
6352 | insdef = Fconcat (2, args); | |
d5db4077 | 6353 | pos = make_number (SCHARS (double_dollars (dir))); |
8d6d9fef | 6354 | insdef = Fcons (double_dollars (insdef), pos); |
570d7624 | 6355 | } |
6e710ae5 | 6356 | else |
8d6d9fef | 6357 | insdef = double_dollars (insdef); |
570d7624 | 6358 | } |
58cc3710 | 6359 | else if (STRINGP (initial)) |
8d6d9fef | 6360 | insdef = Fcons (double_dollars (initial), make_number (0)); |
570d7624 | 6361 | else |
8d6d9fef | 6362 | insdef = Qnil; |
570d7624 | 6363 | |
59ffe07d KS |
6364 | if (!NILP (Vread_file_name_function)) |
6365 | { | |
6366 | Lisp_Object args[7]; | |
6367 | ||
6368 | GCPRO2 (insdef, default_filename); | |
6369 | args[0] = Vread_file_name_function; | |
6370 | args[1] = prompt; | |
6371 | args[2] = dir; | |
6372 | args[3] = default_filename; | |
6373 | args[4] = mustmatch; | |
6374 | args[5] = initial; | |
6375 | args[6] = predicate; | |
6376 | RETURN_UNGCPRO (Ffuncall (7, args)); | |
6377 | } | |
6378 | ||
aed13378 | 6379 | count = SPECPDL_INDEX (); |
94b9aaa2 | 6380 | specbind (Qcompletion_ignore_case, |
316ef0dc | 6381 | read_file_name_completion_ignore_case ? Qt : Qnil); |
a79485af | 6382 | specbind (intern ("minibuffer-completing-file-name"), Qt); |
efdc16c9 | 6383 | specbind (intern ("read-file-name-predicate"), |
59ffe07d | 6384 | (NILP (predicate) ? Qfile_exists_p : predicate)); |
a79485af | 6385 | |
3b7f6e60 | 6386 | GCPRO2 (insdef, default_filename); |
c60ee5e7 | 6387 | |
b15325b2 | 6388 | #if defined (USE_MOTIF) || defined (HAVE_NTGUI) || defined (USE_GTK) || defined (HAVE_CARBON) |
88208bb8 | 6389 | if (! NILP (Fnext_read_file_uses_dialog_p ())) |
9c856db9 | 6390 | { |
9172b88d GM |
6391 | /* If DIR contains a file name, split it. */ |
6392 | Lisp_Object file; | |
6393 | file = Ffile_name_nondirectory (dir); | |
d5db4077 | 6394 | if (SCHARS (file) && NILP (default_filename)) |
9172b88d GM |
6395 | { |
6396 | default_filename = file; | |
6397 | dir = Ffile_name_directory (dir); | |
6398 | } | |
f73f57bd JR |
6399 | if (!NILP(default_filename)) |
6400 | default_filename = Fexpand_file_name (default_filename, dir); | |
f9d64bb3 JD |
6401 | val = Fx_file_dialog (prompt, dir, default_filename, mustmatch, |
6402 | EQ (predicate, Qfile_directory_p) ? Qt : Qnil); | |
9c856db9 GM |
6403 | add_to_history = 1; |
6404 | } | |
6405 | else | |
6406 | #endif | |
6407 | val = Fcompleting_read (prompt, intern ("read-file-name-internal"), | |
6408 | dir, mustmatch, insdef, | |
6409 | Qfile_name_history, default_filename, Qnil); | |
62f555a5 RS |
6410 | |
6411 | tem = Fsymbol_value (Qfile_name_history); | |
03699b14 | 6412 | if (CONSP (tem) && EQ (XCAR (tem), val)) |
62f555a5 RS |
6413 | replace_in_history = 1; |
6414 | ||
6415 | /* If Fcompleting_read returned the inserted default string itself | |
a8c828be RS |
6416 | (rather than a new string with the same contents), |
6417 | it has to mean that the user typed RET with the minibuffer empty. | |
6418 | In that case, we really want to return "" | |
6419 | so that commands such as set-visited-file-name can distinguish. */ | |
6420 | if (EQ (val, default_filename)) | |
62f555a5 RS |
6421 | { |
6422 | /* In this case, Fcompleting_read has not added an element | |
6423 | to the history. Maybe we should. */ | |
6424 | if (! replace_in_history) | |
6425 | add_to_history = 1; | |
6426 | ||
80bad45f | 6427 | val = empty_unibyte_string; |
62f555a5 | 6428 | } |
570d7624 | 6429 | |
570d7624 | 6430 | unbind_to (count, Qnil); |
570d7624 | 6431 | UNGCPRO; |
265a9e55 | 6432 | if (NILP (val)) |
570d7624 | 6433 | error ("No file name specified"); |
62f555a5 | 6434 | |
8d6d9fef | 6435 | tem = Fstring_equal (val, CONSP (insdef) ? XCAR (insdef) : insdef); |
62f555a5 | 6436 | |
3b7f6e60 | 6437 | if (!NILP (tem) && !NILP (default_filename)) |
62f555a5 | 6438 | val = default_filename; |
62f555a5 | 6439 | val = Fsubstitute_in_file_name (val); |
570d7624 | 6440 | |
62f555a5 RS |
6441 | if (replace_in_history) |
6442 | /* Replace what Fcompleting_read added to the history | |
6443 | with what we will actually return. */ | |
75fa7206 RS |
6444 | { |
6445 | Lisp_Object val1 = double_dollars (val); | |
6446 | tem = Fsymbol_value (Qfile_name_history); | |
c1558952 | 6447 | if (history_delete_duplicates) |
75fa7206 RS |
6448 | XSETCDR (tem, Fdelete (val1, XCDR(tem))); |
6449 | XSETCAR (tem, val1); | |
6450 | } | |
62f555a5 | 6451 | else if (add_to_history) |
570d7624 | 6452 | { |
62f555a5 RS |
6453 | /* Add the value to the history--but not if it matches |
6454 | the last value already there. */ | |
8d6d9fef | 6455 | Lisp_Object val1 = double_dollars (val); |
62f555a5 | 6456 | tem = Fsymbol_value (Qfile_name_history); |
03699b14 | 6457 | if (! CONSP (tem) || NILP (Fequal (XCAR (tem), val1))) |
75fa7206 RS |
6458 | { |
6459 | if (history_delete_duplicates) tem = Fdelete (val1, tem); | |
6460 | Fset (Qfile_name_history, Fcons (val1, tem)); | |
6461 | } | |
570d7624 | 6462 | } |
efdc16c9 | 6463 | |
62f555a5 | 6464 | return val; |
570d7624 | 6465 | } |
9c856db9 | 6466 | |
570d7624 | 6467 | \f |
dbda5089 GV |
6468 | void |
6469 | init_fileio_once () | |
6470 | { | |
6471 | /* Must be set before any path manipulation is performed. */ | |
6472 | XSETFASTINT (Vdirectory_sep_char, '/'); | |
6473 | } | |
6474 | ||
9c856db9 | 6475 | \f |
dfcf069d | 6476 | void |
570d7624 JB |
6477 | syms_of_fileio () |
6478 | { | |
f6c9b683 | 6479 | Qoperations = intern ("operations"); |
0bf2eed2 | 6480 | Qexpand_file_name = intern ("expand-file-name"); |
273e0829 | 6481 | Qsubstitute_in_file_name = intern ("substitute-in-file-name"); |
0bf2eed2 RS |
6482 | Qdirectory_file_name = intern ("directory-file-name"); |
6483 | Qfile_name_directory = intern ("file-name-directory"); | |
6484 | Qfile_name_nondirectory = intern ("file-name-nondirectory"); | |
642ef245 | 6485 | Qunhandled_file_name_directory = intern ("unhandled-file-name-directory"); |
0bf2eed2 | 6486 | Qfile_name_as_directory = intern ("file-name-as-directory"); |
32f4334d | 6487 | Qcopy_file = intern ("copy-file"); |
a6e6e718 | 6488 | Qmake_directory_internal = intern ("make-directory-internal"); |
b272d624 | 6489 | Qmake_directory = intern ("make-directory"); |
32f4334d RS |
6490 | Qdelete_directory = intern ("delete-directory"); |
6491 | Qdelete_file = intern ("delete-file"); | |
6492 | Qrename_file = intern ("rename-file"); | |
6493 | Qadd_name_to_file = intern ("add-name-to-file"); | |
6494 | Qmake_symbolic_link = intern ("make-symbolic-link"); | |
6495 | Qfile_exists_p = intern ("file-exists-p"); | |
6496 | Qfile_executable_p = intern ("file-executable-p"); | |
6497 | Qfile_readable_p = intern ("file-readable-p"); | |
32f4334d | 6498 | Qfile_writable_p = intern ("file-writable-p"); |
1f8653eb RS |
6499 | Qfile_symlink_p = intern ("file-symlink-p"); |
6500 | Qaccess_file = intern ("access-file"); | |
32f4334d | 6501 | Qfile_directory_p = intern ("file-directory-p"); |
adedc71d | 6502 | Qfile_regular_p = intern ("file-regular-p"); |
32f4334d RS |
6503 | Qfile_accessible_directory_p = intern ("file-accessible-directory-p"); |
6504 | Qfile_modes = intern ("file-modes"); | |
6505 | Qset_file_modes = intern ("set-file-modes"); | |
819da85b | 6506 | Qset_file_times = intern ("set-file-times"); |
32f4334d RS |
6507 | Qfile_newer_than_file_p = intern ("file-newer-than-file-p"); |
6508 | Qinsert_file_contents = intern ("insert-file-contents"); | |
6509 | Qwrite_region = intern ("write-region"); | |
6510 | Qverify_visited_file_modtime = intern ("verify-visited-file-modtime"); | |
3ec46acd | 6511 | Qset_visited_file_modtime = intern ("set-visited-file-modtime"); |
356a6224 | 6512 | Qauto_save_coding = intern ("auto-save-coding"); |
32f4334d | 6513 | |
f6c9b683 | 6514 | staticpro (&Qoperations); |
642ef245 | 6515 | staticpro (&Qexpand_file_name); |
273e0829 | 6516 | staticpro (&Qsubstitute_in_file_name); |
642ef245 JB |
6517 | staticpro (&Qdirectory_file_name); |
6518 | staticpro (&Qfile_name_directory); | |
6519 | staticpro (&Qfile_name_nondirectory); | |
6520 | staticpro (&Qunhandled_file_name_directory); | |
6521 | staticpro (&Qfile_name_as_directory); | |
15c65264 | 6522 | staticpro (&Qcopy_file); |
c34b559d | 6523 | staticpro (&Qmake_directory_internal); |
b272d624 | 6524 | staticpro (&Qmake_directory); |
15c65264 RS |
6525 | staticpro (&Qdelete_directory); |
6526 | staticpro (&Qdelete_file); | |
6527 | staticpro (&Qrename_file); | |
6528 | staticpro (&Qadd_name_to_file); | |
6529 | staticpro (&Qmake_symbolic_link); | |
6530 | staticpro (&Qfile_exists_p); | |
6531 | staticpro (&Qfile_executable_p); | |
6532 | staticpro (&Qfile_readable_p); | |
15c65264 | 6533 | staticpro (&Qfile_writable_p); |
1f8653eb RS |
6534 | staticpro (&Qaccess_file); |
6535 | staticpro (&Qfile_symlink_p); | |
15c65264 | 6536 | staticpro (&Qfile_directory_p); |
adedc71d | 6537 | staticpro (&Qfile_regular_p); |
15c65264 RS |
6538 | staticpro (&Qfile_accessible_directory_p); |
6539 | staticpro (&Qfile_modes); | |
6540 | staticpro (&Qset_file_modes); | |
819da85b | 6541 | staticpro (&Qset_file_times); |
15c65264 RS |
6542 | staticpro (&Qfile_newer_than_file_p); |
6543 | staticpro (&Qinsert_file_contents); | |
6544 | staticpro (&Qwrite_region); | |
6545 | staticpro (&Qverify_visited_file_modtime); | |
0a61794b | 6546 | staticpro (&Qset_visited_file_modtime); |
356a6224 | 6547 | staticpro (&Qauto_save_coding); |
642ef245 JB |
6548 | |
6549 | Qfile_name_history = intern ("file-name-history"); | |
6550 | Fset (Qfile_name_history, Qnil); | |
15c65264 RS |
6551 | staticpro (&Qfile_name_history); |
6552 | ||
570d7624 JB |
6553 | Qfile_error = intern ("file-error"); |
6554 | staticpro (&Qfile_error); | |
199607e4 | 6555 | Qfile_already_exists = intern ("file-already-exists"); |
570d7624 | 6556 | staticpro (&Qfile_already_exists); |
c0b7b21c RS |
6557 | Qfile_date_error = intern ("file-date-error"); |
6558 | staticpro (&Qfile_date_error); | |
505ab9bc RS |
6559 | Qexcl = intern ("excl"); |
6560 | staticpro (&Qexcl); | |
570d7624 | 6561 | |
5e570b75 | 6562 | #ifdef DOS_NT |
4c3c22f3 RS |
6563 | Qfind_buffer_file_type = intern ("find-buffer-file-type"); |
6564 | staticpro (&Qfind_buffer_file_type); | |
5e570b75 | 6565 | #endif /* DOS_NT */ |
4c3c22f3 | 6566 | |
b1d1b865 | 6567 | DEFVAR_LISP ("file-name-coding-system", &Vfile_name_coding_system, |
8c1a1077 | 6568 | doc: /* *Coding system for encoding file names. |
346ebf53 | 6569 | If it is nil, `default-file-name-coding-system' (which see) is used. */); |
b1d1b865 RS |
6570 | Vfile_name_coding_system = Qnil; |
6571 | ||
cd913586 KH |
6572 | DEFVAR_LISP ("default-file-name-coding-system", |
6573 | &Vdefault_file_name_coding_system, | |
8c1a1077 | 6574 | doc: /* Default coding system for encoding file names. |
346ebf53 | 6575 | This variable is used only when `file-name-coding-system' is nil. |
8c1a1077 | 6576 | |
346ebf53 | 6577 | This variable is set/changed by the command `set-language-environment'. |
8c1a1077 | 6578 | User should not set this variable manually, |
346ebf53 | 6579 | instead use `file-name-coding-system' to get a constant encoding |
8c1a1077 | 6580 | of file names regardless of the current language environment. */); |
cd913586 KH |
6581 | Vdefault_file_name_coding_system = Qnil; |
6582 | ||
0d420e88 BG |
6583 | Qformat_decode = intern ("format-decode"); |
6584 | staticpro (&Qformat_decode); | |
6585 | Qformat_annotate_function = intern ("format-annotate-function"); | |
6586 | staticpro (&Qformat_annotate_function); | |
2080470e KH |
6587 | Qafter_insert_file_set_coding = intern ("after-insert-file-set-coding"); |
6588 | staticpro (&Qafter_insert_file_set_coding); | |
efdc16c9 | 6589 | |
d6a3cc15 RS |
6590 | Qcar_less_than_car = intern ("car-less-than-car"); |
6591 | staticpro (&Qcar_less_than_car); | |
6592 | ||
570d7624 | 6593 | Fput (Qfile_error, Qerror_conditions, |
24b1ddad | 6594 | list2 (Qfile_error, Qerror)); |
570d7624 JB |
6595 | Fput (Qfile_error, Qerror_message, |
6596 | build_string ("File error")); | |
6597 | ||
6598 | Fput (Qfile_already_exists, Qerror_conditions, | |
24b1ddad | 6599 | list3 (Qfile_already_exists, Qfile_error, Qerror)); |
570d7624 JB |
6600 | Fput (Qfile_already_exists, Qerror_message, |
6601 | build_string ("File already exists")); | |
6602 | ||
c0b7b21c | 6603 | Fput (Qfile_date_error, Qerror_conditions, |
24b1ddad | 6604 | list3 (Qfile_date_error, Qfile_error, Qerror)); |
c0b7b21c RS |
6605 | Fput (Qfile_date_error, Qerror_message, |
6606 | build_string ("Cannot set file date")); | |
6607 | ||
59ffe07d KS |
6608 | DEFVAR_LISP ("read-file-name-function", &Vread_file_name_function, |
6609 | doc: /* If this is non-nil, `read-file-name' does its work by calling this function. */); | |
6610 | Vread_file_name_function = Qnil; | |
6611 | ||
6612 | DEFVAR_LISP ("read-file-name-predicate", &Vread_file_name_predicate, | |
6613 | doc: /* Current predicate used by `read-file-name-internal'. */); | |
6614 | Vread_file_name_predicate = Qnil; | |
6615 | ||
316ef0dc JPW |
6616 | DEFVAR_BOOL ("read-file-name-completion-ignore-case", &read_file_name_completion_ignore_case, |
6617 | doc: /* *Non-nil means when reading a file name completion ignores case. */); | |
6618 | #if defined VMS || defined DOS_NT || defined MAC_OS | |
6619 | read_file_name_completion_ignore_case = 1; | |
6620 | #else | |
6621 | read_file_name_completion_ignore_case = 0; | |
6622 | #endif | |
6623 | ||
570d7624 | 6624 | DEFVAR_BOOL ("insert-default-directory", &insert_default_directory, |
6b61353c | 6625 | doc: /* *Non-nil means when reading a filename start with default dir in minibuffer. |
d375705e EZ |
6626 | |
6627 | When the initial minibuffer contents show a name of a file or a directory, | |
6628 | typing RETURN without editing the initial contents is equivalent to typing | |
6629 | the default file name. | |
6630 | ||
6b61353c | 6631 | If this variable is non-nil, the minibuffer contents are always |
d375705e | 6632 | initially non-empty, and typing RETURN without editing will fetch the |
6b61353c | 6633 | default name, if one is provided. Note however that this default name |
d375705e EZ |
6634 | is not necessarily the same as initial contents inserted in the minibuffer, |
6635 | if the initial contents is just the default directory. | |
6636 | ||
6b61353c KH |
6637 | If this variable is nil, the minibuffer often starts out empty. In |
6638 | that case you may have to explicitly fetch the next history element to | |
d375705e EZ |
6639 | request the default name; typing RETURN without editing will leave |
6640 | the minibuffer empty. | |
6641 | ||
6642 | For some commands, exiting with an empty minibuffer has a special meaning, | |
6643 | such as making the current buffer visit no file in the case of | |
6644 | `set-visited-file-name'. */); | |
570d7624 JB |
6645 | insert_default_directory = 1; |
6646 | ||
6647 | DEFVAR_BOOL ("vms-stmlf-recfm", &vms_stmlf_recfm, | |
8c1a1077 PJ |
6648 | doc: /* *Non-nil means write new files with record format `stmlf'. |
6649 | nil means use format `var'. This variable is meaningful only on VMS. */); | |
570d7624 JB |
6650 | vms_stmlf_recfm = 0; |
6651 | ||
199607e4 | 6652 | DEFVAR_LISP ("directory-sep-char", &Vdirectory_sep_char, |
8c1a1077 | 6653 | doc: /* Directory separator character for built-in functions that return file names. |
d57563b6 | 6654 | The value is always ?/. Don't use this variable, just use `/'. */); |
199607e4 | 6655 | |
1d1826db | 6656 | DEFVAR_LISP ("file-name-handler-alist", &Vfile_name_handler_alist, |
8c1a1077 PJ |
6657 | doc: /* *Alist of elements (REGEXP . HANDLER) for file names handled specially. |
6658 | If a file name matches REGEXP, then all I/O on that file is done by calling | |
6659 | HANDLER. | |
6660 | ||
6661 | The first argument given to HANDLER is the name of the I/O primitive | |
6662 | to be handled; the remaining arguments are the arguments that were | |
6663 | passed to that primitive. For example, if you do | |
6664 | (file-exists-p FILENAME) | |
6665 | and FILENAME is handled by HANDLER, then HANDLER is called like this: | |
6666 | (funcall HANDLER 'file-exists-p FILENAME) | |
6667 | The function `find-file-name-handler' checks this list for a handler | |
6668 | for its argument. */); | |
09121adc RS |
6669 | Vfile_name_handler_alist = Qnil; |
6670 | ||
0414b394 KH |
6671 | DEFVAR_LISP ("set-auto-coding-function", |
6672 | &Vset_auto_coding_function, | |
8c1a1077 PJ |
6673 | doc: /* If non-nil, a function to call to decide a coding system of file. |
6674 | Two arguments are passed to this function: the file name | |
6675 | and the length of a file contents following the point. | |
6676 | This function should return a coding system to decode the file contents. | |
6677 | It should check the file name against `auto-coding-alist'. | |
6678 | If no coding system is decided, it should check a coding system | |
6679 | specified in the heading lines with the format: | |
6680 | -*- ... coding: CODING-SYSTEM; ... -*- | |
6681 | or local variable spec of the tailing lines with `coding:' tag. */); | |
0414b394 | 6682 | Vset_auto_coding_function = Qnil; |
c9e82392 | 6683 | |
d6a3cc15 | 6684 | DEFVAR_LISP ("after-insert-file-functions", &Vafter_insert_file_functions, |
8c1a1077 | 6685 | doc: /* A list of functions to be called at the end of `insert-file-contents'. |
0cf9f5b5 RS |
6686 | Each is passed one argument, the number of characters inserted, |
6687 | with point at the start of the inserted text. Each function | |
6688 | should leave point the same, and return the new character count. | |
cf6d2357 RS |
6689 | If `insert-file-contents' is intercepted by a handler from |
6690 | `file-name-handler-alist', that handler is responsible for calling the | |
6691 | functions in `after-insert-file-functions' if appropriate. */); | |
d6a3cc15 RS |
6692 | Vafter_insert_file_functions = Qnil; |
6693 | ||
6694 | DEFVAR_LISP ("write-region-annotate-functions", &Vwrite_region_annotate_functions, | |
8c1a1077 PJ |
6695 | doc: /* A list of functions to be called at the start of `write-region'. |
6696 | Each is passed two arguments, START and END as for `write-region'. | |
6697 | These are usually two numbers but not always; see the documentation | |
6698 | for `write-region'. The function should return a list of pairs | |
6699 | of the form (POSITION . STRING), consisting of strings to be effectively | |
6700 | inserted at the specified positions of the file being written (1 means to | |
6701 | insert before the first byte written). The POSITIONs must be sorted into | |
6702 | increasing order. If there are several functions in the list, the several | |
28c3eb5a | 6703 | lists are merged destructively. Alternatively, the function can return |
bd235610 SM |
6704 | with a different buffer current; in that case it should pay attention |
6705 | to the annotations returned by previous functions and listed in | |
6706 | `write-region-annotations-so-far'.*/); | |
d6a3cc15 | 6707 | Vwrite_region_annotate_functions = Qnil; |
bd235610 SM |
6708 | staticpro (&Qwrite_region_annotate_functions); |
6709 | Qwrite_region_annotate_functions | |
6710 | = intern ("write-region-annotate-functions"); | |
d6a3cc15 | 6711 | |
6fc6f94b RS |
6712 | DEFVAR_LISP ("write-region-annotations-so-far", |
6713 | &Vwrite_region_annotations_so_far, | |
8c1a1077 PJ |
6714 | doc: /* When an annotation function is called, this holds the previous annotations. |
6715 | These are the annotations made by other annotation functions | |
6716 | that were already called. See also `write-region-annotate-functions'. */); | |
6fc6f94b RS |
6717 | Vwrite_region_annotations_so_far = Qnil; |
6718 | ||
82c2d839 | 6719 | DEFVAR_LISP ("inhibit-file-name-handlers", &Vinhibit_file_name_handlers, |
8c1a1077 PJ |
6720 | doc: /* A list of file name handlers that temporarily should not be used. |
6721 | This applies only to the operation `inhibit-file-name-operation'. */); | |
82c2d839 RS |
6722 | Vinhibit_file_name_handlers = Qnil; |
6723 | ||
a65970a0 | 6724 | DEFVAR_LISP ("inhibit-file-name-operation", &Vinhibit_file_name_operation, |
8c1a1077 | 6725 | doc: /* The operation for which `inhibit-file-name-handlers' is applicable. */); |
a65970a0 RS |
6726 | Vinhibit_file_name_operation = Qnil; |
6727 | ||
e54d3b5d | 6728 | DEFVAR_LISP ("auto-save-list-file-name", &Vauto_save_list_file_name, |
8c1a1077 PJ |
6729 | doc: /* File name in which we write a list of all auto save file names. |
6730 | This variable is initialized automatically from `auto-save-list-file-prefix' | |
6731 | shortly after Emacs reads your `.emacs' file, if you have not yet given it | |
6732 | a non-nil value. */); | |
e54d3b5d RS |
6733 | Vauto_save_list_file_name = Qnil; |
6734 | ||
ccf61795 RF |
6735 | #ifdef HAVE_FSYNC |
6736 | DEFVAR_BOOL ("write-region-inhibit-fsync", &write_region_inhibit_fsync, | |
e3f509dd RF |
6737 | doc: /* *Non-nil means don't call fsync in `write-region'. |
6738 | This variable affects calls to `write-region' as well as save commands. | |
6739 | A non-nil value may result in data loss! */); | |
ccf61795 RF |
6740 | write_region_inhibit_fsync = 0; |
6741 | #endif | |
6742 | ||
642ef245 | 6743 | defsubr (&Sfind_file_name_handler); |
570d7624 JB |
6744 | defsubr (&Sfile_name_directory); |
6745 | defsubr (&Sfile_name_nondirectory); | |
642ef245 | 6746 | defsubr (&Sunhandled_file_name_directory); |
570d7624 JB |
6747 | defsubr (&Sfile_name_as_directory); |
6748 | defsubr (&Sdirectory_file_name); | |
6749 | defsubr (&Smake_temp_name); | |
6750 | defsubr (&Sexpand_file_name); | |
6751 | defsubr (&Ssubstitute_in_file_name); | |
6752 | defsubr (&Scopy_file); | |
9bbe01fb | 6753 | defsubr (&Smake_directory_internal); |
aa734e17 | 6754 | defsubr (&Sdelete_directory); |
570d7624 JB |
6755 | defsubr (&Sdelete_file); |
6756 | defsubr (&Srename_file); | |
6757 | defsubr (&Sadd_name_to_file); | |
6758 | #ifdef S_IFLNK | |
6759 | defsubr (&Smake_symbolic_link); | |
6760 | #endif /* S_IFLNK */ | |
6761 | #ifdef VMS | |
6762 | defsubr (&Sdefine_logical_name); | |
6763 | #endif /* VMS */ | |
6764 | #ifdef HPUX_NET | |
6765 | defsubr (&Ssysnetunam); | |
6766 | #endif /* HPUX_NET */ | |
6767 | defsubr (&Sfile_name_absolute_p); | |
6768 | defsubr (&Sfile_exists_p); | |
6769 | defsubr (&Sfile_executable_p); | |
6770 | defsubr (&Sfile_readable_p); | |
6771 | defsubr (&Sfile_writable_p); | |
1f8653eb | 6772 | defsubr (&Saccess_file); |
570d7624 JB |
6773 | defsubr (&Sfile_symlink_p); |
6774 | defsubr (&Sfile_directory_p); | |
b72dea2a | 6775 | defsubr (&Sfile_accessible_directory_p); |
f793dc6c | 6776 | defsubr (&Sfile_regular_p); |
570d7624 JB |
6777 | defsubr (&Sfile_modes); |
6778 | defsubr (&Sset_file_modes); | |
819da85b | 6779 | defsubr (&Sset_file_times); |
c24e9a53 RS |
6780 | defsubr (&Sset_default_file_modes); |
6781 | defsubr (&Sdefault_file_modes); | |
570d7624 JB |
6782 | defsubr (&Sfile_newer_than_file_p); |
6783 | defsubr (&Sinsert_file_contents); | |
6784 | defsubr (&Swrite_region); | |
d6a3cc15 | 6785 | defsubr (&Scar_less_than_car); |
570d7624 JB |
6786 | defsubr (&Sverify_visited_file_modtime); |
6787 | defsubr (&Sclear_visited_file_modtime); | |
f5d5eccf | 6788 | defsubr (&Svisited_file_modtime); |
570d7624 JB |
6789 | defsubr (&Sset_visited_file_modtime); |
6790 | defsubr (&Sdo_auto_save); | |
6791 | defsubr (&Sset_buffer_auto_saved); | |
b60247d9 | 6792 | defsubr (&Sclear_buffer_auto_save_failure); |
570d7624 JB |
6793 | defsubr (&Srecent_auto_save_p); |
6794 | ||
6795 | defsubr (&Sread_file_name_internal); | |
6796 | defsubr (&Sread_file_name); | |
88208bb8 | 6797 | defsubr (&Snext_read_file_uses_dialog_p); |
85ffea93 | 6798 | |
697c17a2 | 6799 | #ifdef HAVE_SYNC |
85ffea93 | 6800 | defsubr (&Sunix_sync); |
483a2e10 | 6801 | #endif |
570d7624 | 6802 | } |
6b61353c KH |
6803 | |
6804 | /* arch-tag: 64ba3fd7-f844-4fb2-ba4b-427eb928786c | |
6805 | (do not change this comment) */ |