Commit | Line | Data |
---|---|---|
570d7624 | 1 | /* File IO for GNU Emacs. |
4b70e2c9 | 2 | Copyright (C) 1985, 1986, 1987, 1988, 1993, 1994, 1995, 1996, 1997, 1998, |
dac24db4 | 3 | 1999, 2000, 2001, 2003, 2004, 2005 Free Software Foundation, Inc. |
570d7624 JB |
4 | |
5 | This file is part of GNU Emacs. | |
6 | ||
7 | GNU Emacs is free software; you can redistribute it and/or modify | |
8 | it under the terms of the GNU General Public License as published by | |
4746118a | 9 | the Free Software Foundation; either version 2, or (at your option) |
570d7624 JB |
10 | any later version. |
11 | ||
12 | GNU Emacs is distributed in the hope that it will be useful, | |
13 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
14 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
15 | GNU General Public License for more details. | |
16 | ||
17 | You should have received a copy of the GNU General Public License | |
18 | along with GNU Emacs; see the file COPYING. If not, write to | |
3b7ad313 EN |
19 | the Free Software Foundation, Inc., 59 Temple Place - Suite 330, |
20 | Boston, MA 02111-1307, USA. */ | |
570d7624 | 21 | |
18160b98 | 22 | #include <config.h> |
570d7624 | 23 | |
612221ab | 24 | #ifdef HAVE_FCNTL_H |
bb369dc6 RS |
25 | #include <fcntl.h> |
26 | #endif | |
27 | ||
1b335d29 | 28 | #include <stdio.h> |
570d7624 JB |
29 | #include <sys/types.h> |
30 | #include <sys/stat.h> | |
bfb61299 | 31 | |
29beb080 RS |
32 | #ifdef HAVE_UNISTD_H |
33 | #include <unistd.h> | |
34 | #endif | |
35 | ||
f73b0ada BF |
36 | #if !defined (S_ISLNK) && defined (S_IFLNK) |
37 | # define S_ISLNK(m) (((m) & S_IFMT) == S_IFLNK) | |
38 | #endif | |
39 | ||
bb369dc6 RS |
40 | #if !defined (S_ISFIFO) && defined (S_IFIFO) |
41 | # define S_ISFIFO(m) (((m) & S_IFMT) == S_IFIFO) | |
42 | #endif | |
43 | ||
f73b0ada BF |
44 | #if !defined (S_ISREG) && defined (S_IFREG) |
45 | # define S_ISREG(m) (((m) & S_IFMT) == S_IFREG) | |
46 | #endif | |
47 | ||
5b9c0a1d | 48 | #ifdef HAVE_PWD_H |
570d7624 | 49 | #include <pwd.h> |
bfb61299 JB |
50 | #endif |
51 | ||
570d7624 | 52 | #include <ctype.h> |
bfb61299 JB |
53 | |
54 | #ifdef VMS | |
3d9f5ce2 | 55 | #include "vmsdir.h" |
bfb61299 JB |
56 | #include <perror.h> |
57 | #include <stddef.h> | |
58 | #include <string.h> | |
bfb61299 JB |
59 | #endif |
60 | ||
570d7624 JB |
61 | #include <errno.h> |
62 | ||
bfb61299 | 63 | #ifndef vax11c |
f12ef5eb | 64 | #ifndef USE_CRT_DLL |
570d7624 | 65 | extern int errno; |
570d7624 | 66 | #endif |
f12ef5eb | 67 | #endif |
570d7624 | 68 | |
570d7624 JB |
69 | #ifdef APOLLO |
70 | #include <sys/time.h> | |
71 | #endif | |
72 | ||
570d7624 | 73 | #include "lisp.h" |
8d4e077b | 74 | #include "intervals.h" |
570d7624 | 75 | #include "buffer.h" |
6fdaa9a0 KH |
76 | #include "charset.h" |
77 | #include "coding.h" | |
570d7624 JB |
78 | #include "window.h" |
79 | ||
5e570b75 RS |
80 | #ifdef WINDOWSNT |
81 | #define NOMINMAX 1 | |
82 | #include <windows.h> | |
83 | #include <stdlib.h> | |
84 | #include <fcntl.h> | |
85 | #endif /* not WINDOWSNT */ | |
86 | ||
7990d02a EZ |
87 | #ifdef MSDOS |
88 | #include "msdos.h" | |
89 | #include <sys/param.h> | |
90 | #if __DJGPP__ >= 2 | |
91 | #include <fcntl.h> | |
92 | #include <string.h> | |
93 | #endif | |
94 | #endif | |
95 | ||
199607e4 RS |
96 | #ifdef DOS_NT |
97 | #define CORRECT_DIR_SEPS(s) \ | |
98 | do { if ('/' == DIRECTORY_SEP) dostounix_filename (s); \ | |
99 | else unixtodos_filename (s); \ | |
100 | } while (0) | |
101 | /* On Windows, drive letters must be alphabetic - on DOS, the Netware | |
102 | redirector allows the six letters between 'Z' and 'a' as well. */ | |
103 | #ifdef MSDOS | |
104 | #define IS_DRIVE(x) ((x) >= 'A' && (x) <= 'z') | |
105 | #endif | |
106 | #ifdef WINDOWSNT | |
107 | #define IS_DRIVE(x) isalpha (x) | |
108 | #endif | |
f54b565c MB |
109 | /* Need to lower-case the drive letter, or else expanded |
110 | filenames will sometimes compare inequal, because | |
111 | `expand-file-name' doesn't always down-case the drive letter. */ | |
112 | #define DRIVE_LETTER(x) (tolower (x)) | |
199607e4 RS |
113 | #endif |
114 | ||
570d7624 | 115 | #ifdef VMS |
570d7624 JB |
116 | #include <file.h> |
117 | #include <rmsdef.h> | |
118 | #include <fab.h> | |
119 | #include <nam.h> | |
120 | #endif | |
121 | ||
de5bf5d3 | 122 | #include "systime.h" |
570d7624 JB |
123 | |
124 | #ifdef HPUX | |
125 | #include <netio.h> | |
9b7828a5 | 126 | #ifndef HPUX8 |
47e7b9e5 | 127 | #ifndef HPUX9 |
570d7624 JB |
128 | #include <errnet.h> |
129 | #endif | |
9b7828a5 | 130 | #endif |
47e7b9e5 | 131 | #endif |
570d7624 | 132 | |
9c856db9 GM |
133 | #include "commands.h" |
134 | extern int use_dialog_box; | |
03d6484e | 135 | extern int use_file_dialog; |
9c856db9 | 136 | |
570d7624 JB |
137 | #ifndef O_WRONLY |
138 | #define O_WRONLY 1 | |
139 | #endif | |
140 | ||
4018b5ef RS |
141 | #ifndef O_RDONLY |
142 | #define O_RDONLY 0 | |
143 | #endif | |
144 | ||
8f6df9b5 EZ |
145 | #ifndef S_ISLNK |
146 | # define lstat stat | |
147 | #endif | |
148 | ||
c1558952 TTN |
149 | #ifndef FILE_SYSTEM_CASE |
150 | #define FILE_SYSTEM_CASE(filename) (filename) | |
151 | #endif | |
152 | ||
570d7624 JB |
153 | /* Nonzero during writing of auto-save files */ |
154 | int auto_saving; | |
155 | ||
156 | /* Set by auto_save_1 to mode of original file so Fwrite_region will create | |
157 | a new file with the same mode as the original */ | |
158 | int auto_save_mode_bits; | |
159 | ||
356a6224 KH |
160 | /* The symbol bound to coding-system-for-read when |
161 | insert-file-contents is called for recovering a file. This is not | |
162 | an actual coding system name, but just an indicator to tell | |
163 | insert-file-contents to use `emacs-mule' with a special flag for | |
164 | auto saving and recovering a file. */ | |
165 | Lisp_Object Qauto_save_coding; | |
166 | ||
b1d1b865 RS |
167 | /* Coding system for file names, or nil if none. */ |
168 | Lisp_Object Vfile_name_coding_system; | |
169 | ||
cd913586 KH |
170 | /* Coding system for file names used only when |
171 | Vfile_name_coding_system is nil. */ | |
172 | Lisp_Object Vdefault_file_name_coding_system; | |
173 | ||
199607e4 | 174 | /* Alist of elements (REGEXP . HANDLER) for file names |
32f4334d RS |
175 | whose I/O is done with a special handler. */ |
176 | Lisp_Object Vfile_name_handler_alist; | |
177 | ||
f6c9b683 RS |
178 | /* Property name of a file name handler, |
179 | which gives a list of operations it handles.. */ | |
180 | Lisp_Object Qoperations; | |
181 | ||
0d420e88 BG |
182 | /* Lisp functions for translating file formats */ |
183 | Lisp_Object Qformat_decode, Qformat_annotate_function; | |
184 | ||
c9e82392 | 185 | /* Function to be called to decide a coding system of a reading file. */ |
0414b394 | 186 | Lisp_Object Vset_auto_coding_function; |
c9e82392 | 187 | |
d6a3cc15 RS |
188 | /* Functions to be called to process text properties in inserted file. */ |
189 | Lisp_Object Vafter_insert_file_functions; | |
190 | ||
2080470e | 191 | /* Lisp function for setting buffer-file-coding-system and the |
b6426b03 | 192 | multibyteness of the current buffer after inserting a file. */ |
2080470e | 193 | Lisp_Object Qafter_insert_file_set_coding; |
b6426b03 | 194 | |
d6a3cc15 RS |
195 | /* Functions to be called to create text property annotations for file. */ |
196 | Lisp_Object Vwrite_region_annotate_functions; | |
bd235610 | 197 | Lisp_Object Qwrite_region_annotate_functions; |
d6a3cc15 | 198 | |
6fc6f94b RS |
199 | /* During build_annotations, each time an annotation function is called, |
200 | this holds the annotations made by the previous functions. */ | |
201 | Lisp_Object Vwrite_region_annotations_so_far; | |
202 | ||
e54d3b5d RS |
203 | /* File name in which we write a list of all our auto save files. */ |
204 | Lisp_Object Vauto_save_list_file_name; | |
205 | ||
59ffe07d | 206 | /* Function to call to read a file name. */ |
efdc16c9 | 207 | Lisp_Object Vread_file_name_function; |
59ffe07d KS |
208 | |
209 | /* Current predicate used by read_file_name_internal. */ | |
210 | Lisp_Object Vread_file_name_predicate; | |
211 | ||
316ef0dc JPW |
212 | /* Nonzero means completion ignores case when reading file name. */ |
213 | int read_file_name_completion_ignore_case; | |
214 | ||
570d7624 JB |
215 | /* Nonzero means, when reading a filename in the minibuffer, |
216 | start out by inserting the default directory into the minibuffer. */ | |
217 | int insert_default_directory; | |
218 | ||
219 | /* On VMS, nonzero means write new files with record format stmlf. | |
220 | Zero means use var format. */ | |
221 | int vms_stmlf_recfm; | |
222 | ||
199607e4 RS |
223 | /* On NT, specifies the directory separator character, used (eg.) when |
224 | expanding file names. This can be bound to / or \. */ | |
225 | Lisp_Object Vdirectory_sep_char; | |
226 | ||
84f6296a RS |
227 | extern Lisp_Object Vuser_login_name; |
228 | ||
c1c4693e RS |
229 | #ifdef WINDOWSNT |
230 | extern Lisp_Object Vw32_get_true_file_attributes; | |
231 | #endif | |
232 | ||
84f6296a RS |
233 | extern int minibuf_level; |
234 | ||
a8c828be RS |
235 | extern int minibuffer_auto_raise; |
236 | ||
75fa7206 RS |
237 | extern int history_delete_duplicates; |
238 | ||
a65970a0 RS |
239 | /* These variables describe handlers that have "already" had a chance |
240 | to handle the current operation. | |
241 | ||
242 | Vinhibit_file_name_handlers is a list of file name handlers. | |
243 | Vinhibit_file_name_operation is the operation being handled. | |
244 | If we try to handle that operation, we ignore those handlers. */ | |
245 | ||
82c2d839 | 246 | static Lisp_Object Vinhibit_file_name_handlers; |
a65970a0 | 247 | static Lisp_Object Vinhibit_file_name_operation; |
82c2d839 | 248 | |
c0b7b21c | 249 | Lisp_Object Qfile_error, Qfile_already_exists, Qfile_date_error; |
505ab9bc | 250 | Lisp_Object Qexcl; |
15c65264 RS |
251 | Lisp_Object Qfile_name_history; |
252 | ||
d6a3cc15 RS |
253 | Lisp_Object Qcar_less_than_car; |
254 | ||
ce51c54c | 255 | static int a_write P_ ((int, Lisp_Object, int, int, |
b9013200 | 256 | Lisp_Object *, struct coding_system *)); |
ce51c54c KH |
257 | static int e_write P_ ((int, Lisp_Object, int, int, struct coding_system *)); |
258 | ||
ec7adf26 | 259 | \f |
5d01d666 | 260 | void |
570d7624 | 261 | report_file_error (string, data) |
19290c65 | 262 | const char *string; |
570d7624 JB |
263 | Lisp_Object data; |
264 | { | |
265 | Lisp_Object errstring; | |
505ab9bc | 266 | int errorno = errno; |
570d7624 | 267 | |
ca9c0567 | 268 | synchronize_system_messages_locale (); |
68c45bf0 PE |
269 | errstring = code_convert_string_norecord (build_string (strerror (errorno)), |
270 | Vlocale_coding_system, 0); | |
271 | ||
570d7624 | 272 | while (1) |
505ab9bc RS |
273 | switch (errorno) |
274 | { | |
275 | case EEXIST: | |
276 | Fsignal (Qfile_already_exists, Fcons (errstring, data)); | |
277 | break; | |
278 | default: | |
279 | /* System error messages are capitalized. Downcase the initial | |
280 | unless it is followed by a slash. */ | |
d5db4077 | 281 | if (SREF (errstring, 1) != '/') |
942dc838 | 282 | SSET (errstring, 0, DOWNCASE (SREF (errstring, 0))); |
505ab9bc RS |
283 | |
284 | Fsignal (Qfile_error, | |
285 | Fcons (build_string (string), Fcons (errstring, data))); | |
286 | } | |
570d7624 | 287 | } |
b5148e85 | 288 | |
b27a1703 | 289 | Lisp_Object |
b5148e85 RS |
290 | close_file_unwind (fd) |
291 | Lisp_Object fd; | |
292 | { | |
68c45bf0 | 293 | emacs_close (XFASTINT (fd)); |
b27a1703 | 294 | return Qnil; |
b5148e85 | 295 | } |
a1d2b64a RS |
296 | |
297 | /* Restore point, having saved it as a marker. */ | |
298 | ||
ec7adf26 | 299 | static Lisp_Object |
a1d2b64a | 300 | restore_point_unwind (location) |
199607e4 | 301 | Lisp_Object location; |
a1d2b64a | 302 | { |
ec7adf26 | 303 | Fgoto_char (location); |
a1d2b64a | 304 | Fset_marker (location, Qnil, Qnil); |
b27a1703 | 305 | return Qnil; |
a1d2b64a | 306 | } |
570d7624 | 307 | \f |
0bf2eed2 | 308 | Lisp_Object Qexpand_file_name; |
273e0829 | 309 | Lisp_Object Qsubstitute_in_file_name; |
0bf2eed2 RS |
310 | Lisp_Object Qdirectory_file_name; |
311 | Lisp_Object Qfile_name_directory; | |
312 | Lisp_Object Qfile_name_nondirectory; | |
642ef245 | 313 | Lisp_Object Qunhandled_file_name_directory; |
0bf2eed2 | 314 | Lisp_Object Qfile_name_as_directory; |
32f4334d | 315 | Lisp_Object Qcopy_file; |
a6e6e718 | 316 | Lisp_Object Qmake_directory_internal; |
b272d624 | 317 | Lisp_Object Qmake_directory; |
32f4334d RS |
318 | Lisp_Object Qdelete_directory; |
319 | Lisp_Object Qdelete_file; | |
320 | Lisp_Object Qrename_file; | |
321 | Lisp_Object Qadd_name_to_file; | |
322 | Lisp_Object Qmake_symbolic_link; | |
323 | Lisp_Object Qfile_exists_p; | |
324 | Lisp_Object Qfile_executable_p; | |
325 | Lisp_Object Qfile_readable_p; | |
32f4334d | 326 | Lisp_Object Qfile_writable_p; |
1f8653eb RS |
327 | Lisp_Object Qfile_symlink_p; |
328 | Lisp_Object Qaccess_file; | |
32f4334d | 329 | Lisp_Object Qfile_directory_p; |
adedc71d | 330 | Lisp_Object Qfile_regular_p; |
32f4334d RS |
331 | Lisp_Object Qfile_accessible_directory_p; |
332 | Lisp_Object Qfile_modes; | |
333 | Lisp_Object Qset_file_modes; | |
819da85b | 334 | Lisp_Object Qset_file_times; |
32f4334d RS |
335 | Lisp_Object Qfile_newer_than_file_p; |
336 | Lisp_Object Qinsert_file_contents; | |
337 | Lisp_Object Qwrite_region; | |
338 | Lisp_Object Qverify_visited_file_modtime; | |
3ec46acd | 339 | Lisp_Object Qset_visited_file_modtime; |
32f4334d | 340 | |
49307295 | 341 | DEFUN ("find-file-name-handler", Ffind_file_name_handler, Sfind_file_name_handler, 2, 2, 0, |
8c1a1077 PJ |
342 | doc: /* Return FILENAME's handler function for OPERATION, if it has one. |
343 | Otherwise, return nil. | |
344 | A file name is handled if one of the regular expressions in | |
345 | `file-name-handler-alist' matches it. | |
346 | ||
347 | If OPERATION equals `inhibit-file-name-operation', then we ignore | |
348 | any handlers that are members of `inhibit-file-name-handlers', | |
349 | but we still do run any other handlers. This lets handlers | |
350 | use the standard functions without calling themselves recursively. */) | |
351 | (filename, operation) | |
352 | Lisp_Object filename, operation; | |
32f4334d | 353 | { |
642ef245 | 354 | /* This function must not munge the match data. */ |
204ee271 | 355 | Lisp_Object chain, inhibited_handlers, result; |
8d2ced53 | 356 | int pos = -1; |
642ef245 | 357 | |
204ee271 | 358 | result = Qnil; |
b7826503 | 359 | CHECK_STRING (filename); |
e4432095 | 360 | |
a65970a0 RS |
361 | if (EQ (operation, Vinhibit_file_name_operation)) |
362 | inhibited_handlers = Vinhibit_file_name_handlers; | |
363 | else | |
364 | inhibited_handlers = Qnil; | |
82c2d839 | 365 | |
93c30b5f | 366 | for (chain = Vfile_name_handler_alist; CONSP (chain); |
03699b14 | 367 | chain = XCDR (chain)) |
32f4334d RS |
368 | { |
369 | Lisp_Object elt; | |
03699b14 | 370 | elt = XCAR (chain); |
93c30b5f | 371 | if (CONSP (elt)) |
32f4334d | 372 | { |
f6c9b683 | 373 | Lisp_Object string = XCAR (elt); |
8d2ced53 | 374 | int match_pos; |
f6c9b683 | 375 | Lisp_Object handler = XCDR (elt); |
68780e2a RS |
376 | Lisp_Object operations = Qnil; |
377 | ||
378 | if (SYMBOLP (handler)) | |
379 | operations = Fget (handler, Qoperations); | |
f6c9b683 | 380 | |
8d2ced53 | 381 | if (STRINGP (string) |
f6c9b683 RS |
382 | && (match_pos = fast_string_match (string, filename)) > pos |
383 | && (NILP (operations) || ! NILP (Fmemq (operation, operations)))) | |
a65970a0 | 384 | { |
f6c9b683 | 385 | Lisp_Object tem; |
a65970a0 | 386 | |
03699b14 | 387 | handler = XCDR (elt); |
a65970a0 RS |
388 | tem = Fmemq (handler, inhibited_handlers); |
389 | if (NILP (tem)) | |
8d2ced53 SM |
390 | { |
391 | result = handler; | |
392 | pos = match_pos; | |
393 | } | |
a65970a0 | 394 | } |
32f4334d | 395 | } |
642ef245 JB |
396 | |
397 | QUIT; | |
32f4334d | 398 | } |
8d2ced53 | 399 | return result; |
32f4334d RS |
400 | } |
401 | \f | |
570d7624 | 402 | DEFUN ("file-name-directory", Ffile_name_directory, Sfile_name_directory, |
8c1a1077 PJ |
403 | 1, 1, 0, |
404 | doc: /* Return the directory component in file name FILENAME. | |
405 | Return nil if FILENAME does not include a directory. | |
406 | Otherwise return a directory spec. | |
407 | Given a Unix syntax file name, returns a string ending in slash; | |
408 | on VMS, perhaps instead a string ending in `:', `]' or `>'. */) | |
409 | (filename) | |
3b7f6e60 | 410 | Lisp_Object filename; |
570d7624 | 411 | { |
100c44b7 | 412 | #ifndef DOS_NT |
19290c65 | 413 | register const unsigned char *beg; |
100c44b7 EZ |
414 | #else |
415 | register unsigned char *beg; | |
416 | #endif | |
19290c65 | 417 | register const unsigned char *p; |
0bf2eed2 | 418 | Lisp_Object handler; |
570d7624 | 419 | |
b7826503 | 420 | CHECK_STRING (filename); |
570d7624 | 421 | |
0bf2eed2 RS |
422 | /* If the file name has special constructs in it, |
423 | call the corresponding file handler. */ | |
3b7f6e60 | 424 | handler = Ffind_file_name_handler (filename, Qfile_name_directory); |
0bf2eed2 | 425 | if (!NILP (handler)) |
3b7f6e60 | 426 | return call2 (handler, Qfile_name_directory, filename); |
0bf2eed2 | 427 | |
3b7f6e60 | 428 | filename = FILE_SYSTEM_CASE (filename); |
d5db4077 | 429 | beg = SDATA (filename); |
199607e4 RS |
430 | #ifdef DOS_NT |
431 | beg = strcpy (alloca (strlen (beg) + 1), beg); | |
432 | #endif | |
d5db4077 | 433 | p = beg + SBYTES (filename); |
570d7624 | 434 | |
199607e4 | 435 | while (p != beg && !IS_DIRECTORY_SEP (p[-1]) |
570d7624 JB |
436 | #ifdef VMS |
437 | && p[-1] != ':' && p[-1] != ']' && p[-1] != '>' | |
438 | #endif /* VMS */ | |
199607e4 | 439 | #ifdef DOS_NT |
ba14e174 RS |
440 | /* only recognise drive specifier at the beginning */ |
441 | && !(p[-1] == ':' | |
442 | /* handle the "/:d:foo" and "/:foo" cases correctly */ | |
443 | && ((p == beg + 2 && !IS_DIRECTORY_SEP (*beg)) | |
444 | || (p == beg + 4 && IS_DIRECTORY_SEP (*beg)))) | |
199607e4 | 445 | #endif |
570d7624 JB |
446 | ) p--; |
447 | ||
448 | if (p == beg) | |
449 | return Qnil; | |
5e570b75 | 450 | #ifdef DOS_NT |
4c3c22f3 | 451 | /* Expansion of "c:" to drive and default directory. */ |
ba14e174 | 452 | if (p[-1] == ':') |
4c3c22f3 | 453 | { |
4c3c22f3 | 454 | /* MAXPATHLEN+1 is guaranteed to be enough space for getdefdir. */ |
199607e4 | 455 | unsigned char *res = alloca (MAXPATHLEN + 1); |
ba14e174 RS |
456 | unsigned char *r = res; |
457 | ||
458 | if (p == beg + 4 && IS_DIRECTORY_SEP (*beg) && beg[1] == ':') | |
459 | { | |
460 | strncpy (res, beg, 2); | |
461 | beg += 2; | |
462 | r += 2; | |
463 | } | |
464 | ||
465 | if (getdefdir (toupper (*beg) - 'A' + 1, r)) | |
4c3c22f3 | 466 | { |
199607e4 | 467 | if (!IS_DIRECTORY_SEP (res[strlen (res) - 1])) |
4c3c22f3 RS |
468 | strcat (res, "/"); |
469 | beg = res; | |
470 | p = beg + strlen (beg); | |
471 | } | |
472 | } | |
199607e4 | 473 | CORRECT_DIR_SEPS (beg); |
5e570b75 | 474 | #endif /* DOS_NT */ |
60d67b83 | 475 | |
d7231f93 | 476 | return make_specified_string (beg, -1, p - beg, STRING_MULTIBYTE (filename)); |
570d7624 JB |
477 | } |
478 | ||
60d67b83 RS |
479 | DEFUN ("file-name-nondirectory", Ffile_name_nondirectory, |
480 | Sfile_name_nondirectory, 1, 1, 0, | |
8c1a1077 PJ |
481 | doc: /* Return file name FILENAME sans its directory. |
482 | For example, in a Unix-syntax file name, | |
483 | this is everything after the last slash, | |
484 | or the entire name if it contains no slash. */) | |
485 | (filename) | |
3b7f6e60 | 486 | Lisp_Object filename; |
570d7624 | 487 | { |
19290c65 | 488 | register const unsigned char *beg, *p, *end; |
0bf2eed2 | 489 | Lisp_Object handler; |
570d7624 | 490 | |
b7826503 | 491 | CHECK_STRING (filename); |
570d7624 | 492 | |
0bf2eed2 RS |
493 | /* If the file name has special constructs in it, |
494 | call the corresponding file handler. */ | |
3b7f6e60 | 495 | handler = Ffind_file_name_handler (filename, Qfile_name_nondirectory); |
0bf2eed2 | 496 | if (!NILP (handler)) |
3b7f6e60 | 497 | return call2 (handler, Qfile_name_nondirectory, filename); |
0bf2eed2 | 498 | |
d5db4077 KR |
499 | beg = SDATA (filename); |
500 | end = p = beg + SBYTES (filename); | |
570d7624 | 501 | |
199607e4 | 502 | while (p != beg && !IS_DIRECTORY_SEP (p[-1]) |
570d7624 JB |
503 | #ifdef VMS |
504 | && p[-1] != ':' && p[-1] != ']' && p[-1] != '>' | |
505 | #endif /* VMS */ | |
199607e4 RS |
506 | #ifdef DOS_NT |
507 | /* only recognise drive specifier at beginning */ | |
ba14e174 RS |
508 | && !(p[-1] == ':' |
509 | /* handle the "/:d:foo" case correctly */ | |
510 | && (p == beg + 2 || (p == beg + 4 && IS_DIRECTORY_SEP (*beg)))) | |
199607e4 | 511 | #endif |
60d67b83 RS |
512 | ) |
513 | p--; | |
570d7624 | 514 | |
d7231f93 | 515 | return make_specified_string (p, -1, end - p, STRING_MULTIBYTE (filename)); |
570d7624 | 516 | } |
642ef245 | 517 | |
60d67b83 RS |
518 | DEFUN ("unhandled-file-name-directory", Funhandled_file_name_directory, |
519 | Sunhandled_file_name_directory, 1, 1, 0, | |
8c1a1077 PJ |
520 | doc: /* Return a directly usable directory name somehow associated with FILENAME. |
521 | A `directly usable' directory name is one that may be used without the | |
522 | intervention of any file handler. | |
523 | If FILENAME is a directly usable file itself, return | |
524 | \(file-name-directory FILENAME). | |
525 | The `call-process' and `start-process' functions use this function to | |
526 | get a current directory to run processes in. */) | |
527 | (filename) | |
528 | Lisp_Object filename; | |
642ef245 JB |
529 | { |
530 | Lisp_Object handler; | |
531 | ||
532 | /* If the file name has special constructs in it, | |
533 | call the corresponding file handler. */ | |
49307295 | 534 | handler = Ffind_file_name_handler (filename, Qunhandled_file_name_directory); |
642ef245 JB |
535 | if (!NILP (handler)) |
536 | return call2 (handler, Qunhandled_file_name_directory, filename); | |
537 | ||
538 | return Ffile_name_directory (filename); | |
539 | } | |
540 | ||
570d7624 JB |
541 | \f |
542 | char * | |
543 | file_name_as_directory (out, in) | |
544 | char *out, *in; | |
545 | { | |
546 | int size = strlen (in) - 1; | |
547 | ||
548 | strcpy (out, in); | |
549 | ||
8aa3a244 RS |
550 | if (size < 0) |
551 | { | |
154a307d KH |
552 | out[0] = '.'; |
553 | out[1] = '/'; | |
554 | out[2] = 0; | |
8aa3a244 RS |
555 | return out; |
556 | } | |
557 | ||
570d7624 JB |
558 | #ifdef VMS |
559 | /* Is it already a directory string? */ | |
560 | if (in[size] == ':' || in[size] == ']' || in[size] == '>') | |
561 | return out; | |
562 | /* Is it a VMS directory file name? If so, hack VMS syntax. */ | |
563 | else if (! index (in, '/') | |
564 | && ((size > 3 && ! strcmp (&in[size - 3], ".DIR")) | |
565 | || (size > 3 && ! strcmp (&in[size - 3], ".dir")) | |
566 | || (size > 5 && (! strncmp (&in[size - 5], ".DIR", 4) | |
567 | || ! strncmp (&in[size - 5], ".dir", 4)) | |
568 | && (in[size - 1] == '.' || in[size - 1] == ';') | |
569 | && in[size] == '1'))) | |
570 | { | |
571 | register char *p, *dot; | |
572 | char brack; | |
573 | ||
574 | /* x.dir -> [.x] | |
575 | dir:x.dir --> dir:[x] | |
576 | dir:[x]y.dir --> dir:[x.y] */ | |
577 | p = in + size; | |
578 | while (p != in && *p != ':' && *p != '>' && *p != ']') p--; | |
579 | if (p != in) | |
580 | { | |
581 | strncpy (out, in, p - in); | |
582 | out[p - in] = '\0'; | |
583 | if (*p == ':') | |
584 | { | |
585 | brack = ']'; | |
586 | strcat (out, ":["); | |
587 | } | |
588 | else | |
589 | { | |
590 | brack = *p; | |
591 | strcat (out, "."); | |
592 | } | |
593 | p++; | |
594 | } | |
595 | else | |
596 | { | |
597 | brack = ']'; | |
598 | strcpy (out, "[."); | |
599 | } | |
bfb61299 JB |
600 | dot = index (p, '.'); |
601 | if (dot) | |
570d7624 JB |
602 | { |
603 | /* blindly remove any extension */ | |
604 | size = strlen (out) + (dot - p); | |
605 | strncat (out, p, dot - p); | |
606 | } | |
607 | else | |
608 | { | |
609 | strcat (out, p); | |
610 | size = strlen (out); | |
611 | } | |
612 | out[size++] = brack; | |
613 | out[size] = '\0'; | |
614 | } | |
615 | #else /* not VMS */ | |
616 | /* For Unix syntax, Append a slash if necessary */ | |
199607e4 | 617 | if (!IS_DIRECTORY_SEP (out[size])) |
5e570b75 | 618 | { |
8cfd6446 JB |
619 | /* Cannot use DIRECTORY_SEP, which could have any value */ |
620 | out[size + 1] = '/'; | |
5e570b75 RS |
621 | out[size + 2] = '\0'; |
622 | } | |
199607e4 RS |
623 | #ifdef DOS_NT |
624 | CORRECT_DIR_SEPS (out); | |
625 | #endif | |
570d7624 JB |
626 | #endif /* not VMS */ |
627 | return out; | |
628 | } | |
629 | ||
630 | DEFUN ("file-name-as-directory", Ffile_name_as_directory, | |
631 | Sfile_name_as_directory, 1, 1, 0, | |
0dac4f85 | 632 | doc: /* Return a string representing the file name FILE interpreted as a directory. |
8c1a1077 PJ |
633 | This operation exists because a directory is also a file, but its name as |
634 | a directory is different from its name as a file. | |
635 | The result can be used as the value of `default-directory' | |
636 | or passed as second argument to `expand-file-name'. | |
637 | For a Unix-syntax file name, just appends a slash. | |
638 | On VMS, converts \"[X]FOO.DIR\" to \"[X.FOO]\", etc. */) | |
639 | (file) | |
570d7624 JB |
640 | Lisp_Object file; |
641 | { | |
642 | char *buf; | |
0bf2eed2 | 643 | Lisp_Object handler; |
570d7624 | 644 | |
b7826503 | 645 | CHECK_STRING (file); |
265a9e55 | 646 | if (NILP (file)) |
570d7624 | 647 | return Qnil; |
0bf2eed2 RS |
648 | |
649 | /* If the file name has special constructs in it, | |
650 | call the corresponding file handler. */ | |
49307295 | 651 | handler = Ffind_file_name_handler (file, Qfile_name_as_directory); |
0bf2eed2 RS |
652 | if (!NILP (handler)) |
653 | return call2 (handler, Qfile_name_as_directory, file); | |
654 | ||
d5db4077 | 655 | buf = (char *) alloca (SBYTES (file) + 10); |
d7231f93 KH |
656 | file_name_as_directory (buf, SDATA (file)); |
657 | return make_specified_string (buf, -1, strlen (buf), | |
658 | STRING_MULTIBYTE (file)); | |
570d7624 JB |
659 | } |
660 | \f | |
661 | /* | |
662 | * Convert from directory name to filename. | |
663 | * On VMS: | |
664 | * xyzzy:[mukesh.emacs] => xyzzy:[mukesh]emacs.dir.1 | |
665 | * xyzzy:[mukesh] => xyzzy:[000000]mukesh.dir.1 | |
199607e4 | 666 | * On UNIX, it's simple: just make sure there isn't a terminating / |
570d7624 JB |
667 | |
668 | * Value is nonzero if the string output is different from the input. | |
669 | */ | |
670 | ||
dfcf069d | 671 | int |
570d7624 JB |
672 | directory_file_name (src, dst) |
673 | char *src, *dst; | |
674 | { | |
675 | long slen; | |
676 | #ifdef VMS | |
677 | long rlen; | |
678 | char * ptr, * rptr; | |
679 | char bracket; | |
680 | struct FAB fab = cc$rms_fab; | |
681 | struct NAM nam = cc$rms_nam; | |
682 | char esa[NAM$C_MAXRSS]; | |
683 | #endif /* VMS */ | |
684 | ||
685 | slen = strlen (src); | |
686 | #ifdef VMS | |
687 | if (! index (src, '/') | |
688 | && (src[slen - 1] == ']' | |
689 | || src[slen - 1] == ':' | |
690 | || src[slen - 1] == '>')) | |
691 | { | |
692 | /* VMS style - convert [x.y.z] to [x.y]z, [x] to [000000]x */ | |
693 | fab.fab$l_fna = src; | |
694 | fab.fab$b_fns = slen; | |
695 | fab.fab$l_nam = &nam; | |
696 | fab.fab$l_fop = FAB$M_NAM; | |
697 | ||
698 | nam.nam$l_esa = esa; | |
699 | nam.nam$b_ess = sizeof esa; | |
700 | nam.nam$b_nop |= NAM$M_SYNCHK; | |
701 | ||
702 | /* We call SYS$PARSE to handle such things as [--] for us. */ | |
199607e4 | 703 | if (SYS$PARSE (&fab, 0, 0) == RMS$_NORMAL) |
570d7624 JB |
704 | { |
705 | slen = nam.nam$b_esl; | |
706 | if (esa[slen - 1] == ';' && esa[slen - 2] == '.') | |
707 | slen -= 2; | |
708 | esa[slen] = '\0'; | |
709 | src = esa; | |
710 | } | |
711 | if (src[slen - 1] != ']' && src[slen - 1] != '>') | |
712 | { | |
713 | /* what about when we have logical_name:???? */ | |
714 | if (src[slen - 1] == ':') | |
5e570b75 | 715 | { /* Xlate logical name and see what we get */ |
570d7624 JB |
716 | ptr = strcpy (dst, src); /* upper case for getenv */ |
717 | while (*ptr) | |
718 | { | |
719 | if ('a' <= *ptr && *ptr <= 'z') | |
720 | *ptr -= 040; | |
721 | ptr++; | |
722 | } | |
5e570b75 | 723 | dst[slen - 1] = 0; /* remove colon */ |
570d7624 JB |
724 | if (!(src = egetenv (dst))) |
725 | return 0; | |
726 | /* should we jump to the beginning of this procedure? | |
727 | Good points: allows us to use logical names that xlate | |
728 | to Unix names, | |
729 | Bad points: can be a problem if we just translated to a device | |
730 | name... | |
731 | For now, I'll punt and always expect VMS names, and hope for | |
732 | the best! */ | |
733 | slen = strlen (src); | |
734 | if (src[slen - 1] != ']' && src[slen - 1] != '>') | |
735 | { /* no recursion here! */ | |
736 | strcpy (dst, src); | |
737 | return 0; | |
738 | } | |
739 | } | |
740 | else | |
5e570b75 | 741 | { /* not a directory spec */ |
570d7624 JB |
742 | strcpy (dst, src); |
743 | return 0; | |
744 | } | |
745 | } | |
746 | bracket = src[slen - 1]; | |
747 | ||
748 | /* If bracket is ']' or '>', bracket - 2 is the corresponding | |
749 | opening bracket. */ | |
bfb61299 JB |
750 | ptr = index (src, bracket - 2); |
751 | if (ptr == 0) | |
570d7624 JB |
752 | { /* no opening bracket */ |
753 | strcpy (dst, src); | |
754 | return 0; | |
755 | } | |
756 | if (!(rptr = rindex (src, '.'))) | |
757 | rptr = ptr; | |
758 | slen = rptr - src; | |
759 | strncpy (dst, src, slen); | |
760 | dst[slen] = '\0'; | |
761 | if (*rptr == '.') | |
762 | { | |
763 | dst[slen++] = bracket; | |
764 | dst[slen] = '\0'; | |
765 | } | |
766 | else | |
767 | { | |
768 | /* If we have the top-level of a rooted directory (i.e. xx:[000000]), | |
769 | then translate the device and recurse. */ | |
770 | if (dst[slen - 1] == ':' | |
5e570b75 | 771 | && dst[slen - 2] != ':' /* skip decnet nodes */ |
199607e4 | 772 | && strcmp (src + slen, "[000000]") == 0) |
570d7624 JB |
773 | { |
774 | dst[slen - 1] = '\0'; | |
775 | if ((ptr = egetenv (dst)) | |
776 | && (rlen = strlen (ptr) - 1) > 0 | |
777 | && (ptr[rlen] == ']' || ptr[rlen] == '>') | |
778 | && ptr[rlen - 1] == '.') | |
779 | { | |
72b21817 RS |
780 | char * buf = (char *) alloca (strlen (ptr) + 1); |
781 | strcpy (buf, ptr); | |
782 | buf[rlen - 1] = ']'; | |
783 | buf[rlen] = '\0'; | |
784 | return directory_file_name (buf, dst); | |
570d7624 JB |
785 | } |
786 | else | |
787 | dst[slen - 1] = ':'; | |
788 | } | |
789 | strcat (dst, "[000000]"); | |
790 | slen += 8; | |
791 | } | |
792 | rptr++; | |
793 | rlen = strlen (rptr) - 1; | |
794 | strncat (dst, rptr, rlen); | |
795 | dst[slen + rlen] = '\0'; | |
796 | strcat (dst, ".DIR.1"); | |
797 | return 1; | |
798 | } | |
799 | #endif /* VMS */ | |
800 | /* Process as Unix format: just remove any final slash. | |
801 | But leave "/" unchanged; do not change it to "". */ | |
802 | strcpy (dst, src); | |
125feee8 RS |
803 | #ifdef APOLLO |
804 | /* Handle // as root for apollo's. */ | |
805 | if ((slen > 2 && dst[slen - 1] == '/') | |
806 | || (slen > 1 && dst[0] != '/' && dst[slen - 1] == '/')) | |
807 | dst[slen - 1] = 0; | |
808 | #else | |
199607e4 | 809 | if (slen > 1 |
5e570b75 | 810 | && IS_DIRECTORY_SEP (dst[slen - 1]) |
4592782e RS |
811 | #ifdef DOS_NT |
812 | && !IS_ANY_SEP (dst[slen - 2]) | |
813 | #endif | |
814 | ) | |
570d7624 | 815 | dst[slen - 1] = 0; |
199607e4 RS |
816 | #endif |
817 | #ifdef DOS_NT | |
818 | CORRECT_DIR_SEPS (dst); | |
125feee8 | 819 | #endif |
570d7624 JB |
820 | return 1; |
821 | } | |
822 | ||
823 | DEFUN ("directory-file-name", Fdirectory_file_name, Sdirectory_file_name, | |
8c1a1077 PJ |
824 | 1, 1, 0, |
825 | doc: /* Returns the file name of the directory named DIRECTORY. | |
826 | This is the name of the file that holds the data for the directory DIRECTORY. | |
827 | This operation exists because a directory is also a file, but its name as | |
828 | a directory is different from its name as a file. | |
829 | In Unix-syntax, this function just removes the final slash. | |
830 | On VMS, given a VMS-syntax directory name such as \"[X.Y]\", | |
831 | it returns a file name such as \"[X]Y.DIR.1\". */) | |
832 | (directory) | |
570d7624 JB |
833 | Lisp_Object directory; |
834 | { | |
835 | char *buf; | |
0bf2eed2 | 836 | Lisp_Object handler; |
570d7624 | 837 | |
b7826503 | 838 | CHECK_STRING (directory); |
570d7624 | 839 | |
265a9e55 | 840 | if (NILP (directory)) |
570d7624 | 841 | return Qnil; |
0bf2eed2 RS |
842 | |
843 | /* If the file name has special constructs in it, | |
844 | call the corresponding file handler. */ | |
49307295 | 845 | handler = Ffind_file_name_handler (directory, Qdirectory_file_name); |
0bf2eed2 RS |
846 | if (!NILP (handler)) |
847 | return call2 (handler, Qdirectory_file_name, directory); | |
848 | ||
570d7624 JB |
849 | #ifdef VMS |
850 | /* 20 extra chars is insufficient for VMS, since we might perform a | |
851 | logical name translation. an equivalence string can be up to 255 | |
852 | chars long, so grab that much extra space... - sss */ | |
d5db4077 | 853 | buf = (char *) alloca (SBYTES (directory) + 20 + 255); |
570d7624 | 854 | #else |
d5db4077 | 855 | buf = (char *) alloca (SBYTES (directory) + 20); |
570d7624 | 856 | #endif |
d5db4077 | 857 | directory_file_name (SDATA (directory), buf); |
d7231f93 KH |
858 | return make_specified_string (buf, -1, strlen (buf), |
859 | STRING_MULTIBYTE (directory)); | |
570d7624 JB |
860 | } |
861 | ||
3ce839e4 RS |
862 | static char make_temp_name_tbl[64] = |
863 | { | |
864 | 'A','B','C','D','E','F','G','H', | |
865 | 'I','J','K','L','M','N','O','P', | |
866 | 'Q','R','S','T','U','V','W','X', | |
867 | 'Y','Z','a','b','c','d','e','f', | |
868 | 'g','h','i','j','k','l','m','n', | |
869 | 'o','p','q','r','s','t','u','v', | |
870 | 'w','x','y','z','0','1','2','3', | |
871 | '4','5','6','7','8','9','-','_' | |
872 | }; | |
cb613bb8 | 873 | |
3ce839e4 RS |
874 | static unsigned make_temp_name_count, make_temp_name_count_initialized_p; |
875 | ||
cb613bb8 | 876 | /* Value is a temporary file name starting with PREFIX, a string. |
efdc16c9 | 877 | |
cb613bb8 GM |
878 | The Emacs process number forms part of the result, so there is |
879 | no danger of generating a name being used by another process. | |
880 | In addition, this function makes an attempt to choose a name | |
881 | which has no existing file. To make this work, PREFIX should be | |
882 | an absolute file name. | |
efdc16c9 | 883 | |
cb613bb8 GM |
884 | BASE64_P non-zero means add the pid as 3 characters in base64 |
885 | encoding. In this case, 6 characters will be added to PREFIX to | |
886 | form the file name. Otherwise, if Emacs is running on a system | |
887 | with long file names, add the pid as a decimal number. | |
888 | ||
889 | This function signals an error if no unique file name could be | |
890 | generated. */ | |
891 | ||
892 | Lisp_Object | |
893 | make_temp_name (prefix, base64_p) | |
570d7624 | 894 | Lisp_Object prefix; |
cb613bb8 | 895 | int base64_p; |
570d7624 JB |
896 | { |
897 | Lisp_Object val; | |
0cedd530 | 898 | int len, clen; |
3ce839e4 RS |
899 | int pid; |
900 | unsigned char *p, *data; | |
901 | char pidbuf[20]; | |
902 | int pidlen; | |
efdc16c9 | 903 | |
b7826503 | 904 | CHECK_STRING (prefix); |
3ce839e4 RS |
905 | |
906 | /* VAL is created by adding 6 characters to PREFIX. The first | |
907 | three are the PID of this process, in base 64, and the second | |
908 | three are incremented if the file already exists. This ensures | |
909 | 262144 unique file names per PID per PREFIX. */ | |
910 | ||
911 | pid = (int) getpid (); | |
912 | ||
cb613bb8 GM |
913 | if (base64_p) |
914 | { | |
915 | pidbuf[0] = make_temp_name_tbl[pid & 63], pid >>= 6; | |
916 | pidbuf[1] = make_temp_name_tbl[pid & 63], pid >>= 6; | |
917 | pidbuf[2] = make_temp_name_tbl[pid & 63], pid >>= 6; | |
918 | pidlen = 3; | |
919 | } | |
920 | else | |
921 | { | |
3ce839e4 | 922 | #ifdef HAVE_LONG_FILE_NAMES |
cb613bb8 GM |
923 | sprintf (pidbuf, "%d", pid); |
924 | pidlen = strlen (pidbuf); | |
3a3bfb18 | 925 | #else |
cb613bb8 GM |
926 | pidbuf[0] = make_temp_name_tbl[pid & 63], pid >>= 6; |
927 | pidbuf[1] = make_temp_name_tbl[pid & 63], pid >>= 6; | |
928 | pidbuf[2] = make_temp_name_tbl[pid & 63], pid >>= 6; | |
929 | pidlen = 3; | |
3ce839e4 | 930 | #endif |
cb613bb8 | 931 | } |
efdc16c9 | 932 | |
0cedd530 SM |
933 | len = SBYTES (prefix); clen = SCHARS (prefix); |
934 | val = make_uninit_multibyte_string (clen + 3 + pidlen, len + 3 + pidlen); | |
935 | if (!STRING_MULTIBYTE (prefix)) | |
936 | STRING_SET_UNIBYTE (val); | |
d5db4077 KR |
937 | data = SDATA (val); |
938 | bcopy(SDATA (prefix), data, len); | |
3ce839e4 RS |
939 | p = data + len; |
940 | ||
941 | bcopy (pidbuf, p, pidlen); | |
942 | p += pidlen; | |
943 | ||
944 | /* Here we try to minimize useless stat'ing when this function is | |
945 | invoked many times successively with the same PREFIX. We achieve | |
946 | this by initializing count to a random value, and incrementing it | |
f6a492a9 RS |
947 | afterwards. |
948 | ||
949 | We don't want make-temp-name to be called while dumping, | |
950 | because then make_temp_name_count_initialized_p would get set | |
951 | and then make_temp_name_count would not be set when Emacs starts. */ | |
952 | ||
3ce839e4 RS |
953 | if (!make_temp_name_count_initialized_p) |
954 | { | |
955 | make_temp_name_count = (unsigned) time (NULL); | |
956 | make_temp_name_count_initialized_p = 1; | |
957 | } | |
958 | ||
959 | while (1) | |
960 | { | |
961 | struct stat ignored; | |
8a7777fc | 962 | unsigned num = make_temp_name_count; |
3ce839e4 RS |
963 | |
964 | p[0] = make_temp_name_tbl[num & 63], num >>= 6; | |
965 | p[1] = make_temp_name_tbl[num & 63], num >>= 6; | |
966 | p[2] = make_temp_name_tbl[num & 63], num >>= 6; | |
967 | ||
8a7777fc RS |
968 | /* Poor man's congruential RN generator. Replace with |
969 | ++make_temp_name_count for debugging. */ | |
970 | make_temp_name_count += 25229; | |
971 | make_temp_name_count %= 225307; | |
972 | ||
3ce839e4 RS |
973 | if (stat (data, &ignored) < 0) |
974 | { | |
975 | /* We want to return only if errno is ENOENT. */ | |
976 | if (errno == ENOENT) | |
977 | return val; | |
978 | else | |
979 | /* The error here is dubious, but there is little else we | |
980 | can do. The alternatives are to return nil, which is | |
981 | as bad as (and in many cases worse than) throwing the | |
982 | error, or to ignore the error, which will likely result | |
8a7777fc RS |
983 | in looping through 225307 stat's, which is not only |
984 | dog-slow, but also useless since it will fallback to | |
985 | the errow below, anyway. */ | |
9869bb0b | 986 | report_file_error ("Cannot create temporary name for prefix", |
3ce839e4 RS |
987 | Fcons (prefix, Qnil)); |
988 | /* not reached */ | |
989 | } | |
990 | } | |
991 | ||
992 | error ("Cannot create temporary name for prefix `%s'", | |
d5db4077 | 993 | SDATA (prefix)); |
3ce839e4 | 994 | return Qnil; |
570d7624 | 995 | } |
3ce839e4 | 996 | |
cb613bb8 GM |
997 | |
998 | DEFUN ("make-temp-name", Fmake_temp_name, Smake_temp_name, 1, 1, 0, | |
8c1a1077 PJ |
999 | doc: /* Generate temporary file name (string) starting with PREFIX (a string). |
1000 | The Emacs process number forms part of the result, | |
1001 | so there is no danger of generating a name being used by another process. | |
1002 | ||
1003 | In addition, this function makes an attempt to choose a name | |
1004 | which has no existing file. To make this work, | |
1005 | PREFIX should be an absolute file name. | |
1006 | ||
1007 | There is a race condition between calling `make-temp-name' and creating the | |
1008 | file which opens all kinds of security holes. For that reason, you should | |
f9e6f049 RS |
1009 | probably use `make-temp-file' instead, except in three circumstances: |
1010 | ||
1011 | * If you are creating the file in the user's home directory. | |
1012 | * If you are creating a directory rather than an ordinary file. | |
1013 | * If you are taking special precautions as `make-temp-file' does. */) | |
8c1a1077 | 1014 | (prefix) |
cb613bb8 GM |
1015 | Lisp_Object prefix; |
1016 | { | |
1017 | return make_temp_name (prefix, 0); | |
1018 | } | |
1019 | ||
1020 | ||
570d7624 JB |
1021 | \f |
1022 | DEFUN ("expand-file-name", Fexpand_file_name, Sexpand_file_name, 1, 2, 0, | |
8c1a1077 PJ |
1023 | doc: /* Convert filename NAME to absolute, and canonicalize it. |
1024 | Second arg DEFAULT-DIRECTORY is directory to start with if NAME is relative | |
c70a4df6 | 1025 | \(does not start with slash); if DEFAULT-DIRECTORY is nil or missing, |
a4e03fe5 | 1026 | the current buffer's value of `default-directory' is used. |
8c1a1077 PJ |
1027 | File name components that are `.' are removed, and |
1028 | so are file name components followed by `..', along with the `..' itself; | |
1029 | note that these simplifications are done without checking the resulting | |
1030 | file names in the file system. | |
1031 | An initial `~/' expands to your home directory. | |
1032 | An initial `~USER/' expands to USER's home directory. | |
1033 | See also the function `substitute-in-file-name'. */) | |
1034 | (name, default_directory) | |
3b7f6e60 | 1035 | Lisp_Object name, default_directory; |
570d7624 JB |
1036 | { |
1037 | unsigned char *nm; | |
199607e4 | 1038 | |
570d7624 JB |
1039 | register unsigned char *newdir, *p, *o; |
1040 | int tlen; | |
1041 | unsigned char *target; | |
1042 | struct passwd *pw; | |
570d7624 JB |
1043 | #ifdef VMS |
1044 | unsigned char * colon = 0; | |
1045 | unsigned char * close = 0; | |
1046 | unsigned char * slash = 0; | |
1047 | unsigned char * brack = 0; | |
1048 | int lbrack = 0, rbrack = 0; | |
1049 | int dots = 0; | |
1050 | #endif /* VMS */ | |
5e570b75 | 1051 | #ifdef DOS_NT |
199607e4 | 1052 | int drive = 0; |
9a1dc3be | 1053 | int collapse_newdir = 1; |
f0f95d31 | 1054 | int is_escaped = 0; |
5e570b75 | 1055 | #endif /* DOS_NT */ |
199607e4 | 1056 | int length; |
beb402de | 1057 | Lisp_Object handler, result; |
199607e4 | 1058 | |
b7826503 | 1059 | CHECK_STRING (name); |
570d7624 | 1060 | |
0bf2eed2 RS |
1061 | /* If the file name has special constructs in it, |
1062 | call the corresponding file handler. */ | |
49307295 | 1063 | handler = Ffind_file_name_handler (name, Qexpand_file_name); |
0bf2eed2 | 1064 | if (!NILP (handler)) |
3b7f6e60 | 1065 | return call3 (handler, Qexpand_file_name, name, default_directory); |
58fc9587 | 1066 | |
3b7f6e60 EN |
1067 | /* Use the buffer's default-directory if DEFAULT_DIRECTORY is omitted. */ |
1068 | if (NILP (default_directory)) | |
1069 | default_directory = current_buffer->directory; | |
82330e7f | 1070 | if (! STRINGP (default_directory)) |
dd693537 EZ |
1071 | { |
1072 | #ifdef DOS_NT | |
1073 | /* "/" is not considered a root directory on DOS_NT, so using "/" | |
1074 | here causes an infinite recursion in, e.g., the following: | |
1075 | ||
1076 | (let (default-directory) | |
1077 | (expand-file-name "a")) | |
1078 | ||
1079 | To avoid this, we set default_directory to the root of the | |
1080 | current drive. */ | |
1081 | extern char *emacs_root_dir (void); | |
1082 | ||
1083 | default_directory = build_string (emacs_root_dir ()); | |
1084 | #else | |
1085 | default_directory = build_string ("/"); | |
1086 | #endif | |
1087 | } | |
58fc9587 | 1088 | |
3b7f6e60 | 1089 | if (!NILP (default_directory)) |
273e0829 | 1090 | { |
3b7f6e60 | 1091 | handler = Ffind_file_name_handler (default_directory, Qexpand_file_name); |
273e0829 | 1092 | if (!NILP (handler)) |
3b7f6e60 | 1093 | return call3 (handler, Qexpand_file_name, name, default_directory); |
273e0829 | 1094 | } |
0bf2eed2 | 1095 | |
d5db4077 | 1096 | o = SDATA (default_directory); |
5e570b75 | 1097 | |
3b7f6e60 | 1098 | /* Make sure DEFAULT_DIRECTORY is properly expanded. |
f14b1c68 | 1099 | It would be better to do this down below where we actually use |
3b7f6e60 | 1100 | default_directory. Unfortunately, calling Fexpand_file_name recursively |
f14b1c68 JB |
1101 | could invoke GC, and the strings might be relocated. This would |
1102 | be annoying because we have pointers into strings lying around | |
1103 | that would need adjusting, and people would add new pointers to | |
1104 | the code and forget to adjust them, resulting in intermittent bugs. | |
4ad827c5 RS |
1105 | Putting this call here avoids all that crud. |
1106 | ||
1107 | The EQ test avoids infinite recursion. */ | |
3b7f6e60 | 1108 | if (! NILP (default_directory) && !EQ (default_directory, name) |
199607e4 RS |
1109 | /* Save time in some common cases - as long as default_directory |
1110 | is not relative, it can be canonicalized with name below (if it | |
1111 | is needed at all) without requiring it to be expanded now. */ | |
01937013 | 1112 | #ifdef DOS_NT |
199607e4 | 1113 | /* Detect MSDOS file names with drive specifiers. */ |
f0f95d31 | 1114 | && ! (IS_DRIVE (o[0]) && IS_DEVICE_SEP (o[1]) && IS_DIRECTORY_SEP (o[2])) |
199607e4 RS |
1115 | #ifdef WINDOWSNT |
1116 | /* Detect Windows file names in UNC format. */ | |
1117 | && ! (IS_DIRECTORY_SEP (o[0]) && IS_DIRECTORY_SEP (o[1])) | |
01937013 | 1118 | #endif |
199607e4 RS |
1119 | #else /* not DOS_NT */ |
1120 | /* Detect Unix absolute file names (/... alone is not absolute on | |
1121 | DOS or Windows). */ | |
1122 | && ! (IS_DIRECTORY_SEP (o[0])) | |
1123 | #endif /* not DOS_NT */ | |
1124 | ) | |
f14b1c68 JB |
1125 | { |
1126 | struct gcpro gcpro1; | |
1127 | ||
1128 | GCPRO1 (name); | |
3b7f6e60 | 1129 | default_directory = Fexpand_file_name (default_directory, Qnil); |
f14b1c68 JB |
1130 | UNGCPRO; |
1131 | } | |
1132 | ||
4c3c22f3 | 1133 | name = FILE_SYSTEM_CASE (name); |
d5db4077 | 1134 | nm = SDATA (name); |
a5a1cc06 | 1135 | |
5e570b75 | 1136 | #ifdef DOS_NT |
199607e4 RS |
1137 | /* We will force directory separators to be either all \ or /, so make |
1138 | a local copy to modify, even if there ends up being no change. */ | |
1139 | nm = strcpy (alloca (strlen (nm) + 1), nm); | |
1140 | ||
f0f95d31 RS |
1141 | /* Note if special escape prefix is present, but remove for now. */ |
1142 | if (nm[0] == '/' && nm[1] == ':') | |
1143 | { | |
1144 | is_escaped = 1; | |
1145 | nm += 2; | |
1146 | } | |
1147 | ||
199607e4 | 1148 | /* Find and remove drive specifier if present; this makes nm absolute |
f0f95d31 RS |
1149 | even if the rest of the name appears to be relative. Only look for |
1150 | drive specifier at the beginning. */ | |
1151 | if (IS_DRIVE (nm[0]) && IS_DEVICE_SEP (nm[1])) | |
1152 | { | |
1153 | drive = nm[0]; | |
1154 | nm += 2; | |
1155 | } | |
bb1ff1f4 GV |
1156 | |
1157 | #ifdef WINDOWSNT | |
1158 | /* If we see "c://somedir", we want to strip the first slash after the | |
1159 | colon when stripping the drive letter. Otherwise, this expands to | |
1160 | "//somedir". */ | |
1161 | if (drive && IS_DIRECTORY_SEP (nm[0]) && IS_DIRECTORY_SEP (nm[1])) | |
1162 | nm++; | |
1163 | #endif /* WINDOWSNT */ | |
5e570b75 | 1164 | #endif /* DOS_NT */ |
4c3c22f3 | 1165 | |
199607e4 RS |
1166 | #ifdef WINDOWSNT |
1167 | /* Discard any previous drive specifier if nm is now in UNC format. */ | |
1168 | if (IS_DIRECTORY_SEP (nm[0]) && IS_DIRECTORY_SEP (nm[1])) | |
1169 | { | |
1170 | drive = 0; | |
1171 | } | |
1172 | #endif | |
1173 | ||
214378ec GM |
1174 | /* If nm is absolute, look for `/./' or `/../' or `//''sequences; if |
1175 | none are found, we can probably return right away. We will avoid | |
1176 | allocating a new string if name is already fully expanded. */ | |
570d7624 | 1177 | if ( |
5e570b75 | 1178 | IS_DIRECTORY_SEP (nm[0]) |
199607e4 | 1179 | #ifdef MSDOS |
f0f95d31 | 1180 | && drive && !is_escaped |
199607e4 RS |
1181 | #endif |
1182 | #ifdef WINDOWSNT | |
f0f95d31 | 1183 | && (drive || IS_DIRECTORY_SEP (nm[1])) && !is_escaped |
199607e4 | 1184 | #endif |
570d7624 JB |
1185 | #ifdef VMS |
1186 | || index (nm, ':') | |
1187 | #endif /* VMS */ | |
1188 | ) | |
1189 | { | |
f14b1c68 JB |
1190 | /* If it turns out that the filename we want to return is just a |
1191 | suffix of FILENAME, we don't need to go through and edit | |
1192 | things; we just need to construct a new string using data | |
1193 | starting at the middle of FILENAME. If we set lose to a | |
1194 | non-zero value, that means we've discovered that we can't do | |
1195 | that cool trick. */ | |
1196 | int lose = 0; | |
1197 | ||
570d7624 | 1198 | p = nm; |
570d7624 JB |
1199 | while (*p) |
1200 | { | |
199607e4 | 1201 | /* Since we know the name is absolute, we can assume that each |
c77d647e JB |
1202 | element starts with a "/". */ |
1203 | ||
c77d647e | 1204 | /* "." and ".." are hairy. */ |
5e570b75 | 1205 | if (IS_DIRECTORY_SEP (p[0]) |
c77d647e | 1206 | && p[1] == '.' |
5e570b75 | 1207 | && (IS_DIRECTORY_SEP (p[2]) |
c77d647e | 1208 | || p[2] == 0 |
5e570b75 | 1209 | || (p[2] == '.' && (IS_DIRECTORY_SEP (p[3]) |
c77d647e | 1210 | || p[3] == 0)))) |
570d7624 | 1211 | lose = 1; |
214378ec GM |
1212 | /* We want to replace multiple `/' in a row with a single |
1213 | slash. */ | |
1214 | else if (p > nm | |
1215 | && IS_DIRECTORY_SEP (p[0]) | |
1216 | && IS_DIRECTORY_SEP (p[1])) | |
1217 | lose = 1; | |
efdc16c9 | 1218 | |
570d7624 JB |
1219 | #ifdef VMS |
1220 | if (p[0] == '\\') | |
1221 | lose = 1; | |
1222 | if (p[0] == '/') { | |
1223 | /* if dev:[dir]/, move nm to / */ | |
1224 | if (!slash && p > nm && (brack || colon)) { | |
1225 | nm = (brack ? brack + 1 : colon + 1); | |
1226 | lbrack = rbrack = 0; | |
1227 | brack = 0; | |
1228 | colon = 0; | |
1229 | } | |
1230 | slash = p; | |
1231 | } | |
1232 | if (p[0] == '-') | |
ad204e95 | 1233 | #ifdef NO_HYPHENS_IN_FILENAMES |
570d7624 JB |
1234 | if (lbrack == rbrack) |
1235 | { | |
ad204e95 TTN |
1236 | /* Avoid clobbering negative version numbers. */ |
1237 | if (dots < 2) | |
570d7624 JB |
1238 | p[0] = '_'; |
1239 | } | |
1240 | else | |
ad204e95 | 1241 | #endif /* NO_HYPHENS_IN_FILENAMES */ |
570d7624 JB |
1242 | if (lbrack > rbrack && |
1243 | ((p[-1] == '.' || p[-1] == '[' || p[-1] == '<') && | |
1244 | (p[1] == '.' || p[1] == ']' || p[1] == '>'))) | |
1245 | lose = 1; | |
ad204e95 | 1246 | #ifdef NO_HYPHENS_IN_FILENAMES |
570d7624 JB |
1247 | else |
1248 | p[0] = '_'; | |
ad204e95 | 1249 | #endif /* NO_HYPHENS_IN_FILENAMES */ |
570d7624 JB |
1250 | /* count open brackets, reset close bracket pointer */ |
1251 | if (p[0] == '[' || p[0] == '<') | |
1252 | lbrack++, brack = 0; | |
1253 | /* count close brackets, set close bracket pointer */ | |
1254 | if (p[0] == ']' || p[0] == '>') | |
1255 | rbrack++, brack = p; | |
1256 | /* detect ][ or >< */ | |
1257 | if ((p[0] == ']' || p[0] == '>') && (p[1] == '[' || p[1] == '<')) | |
1258 | lose = 1; | |
1259 | if ((p[0] == ':' || p[0] == ']' || p[0] == '>') && p[1] == '~') | |
1260 | nm = p + 1, lose = 1; | |
1261 | if (p[0] == ':' && (colon || slash)) | |
1262 | /* if dev1:[dir]dev2:, move nm to dev2: */ | |
1263 | if (brack) | |
1264 | { | |
1265 | nm = brack + 1; | |
1266 | brack = 0; | |
1267 | } | |
199607e4 | 1268 | /* if /name/dev:, move nm to dev: */ |
570d7624 JB |
1269 | else if (slash) |
1270 | nm = slash + 1; | |
1271 | /* if node::dev:, move colon following dev */ | |
1272 | else if (colon && colon[-1] == ':') | |
1273 | colon = p; | |
1274 | /* if dev1:dev2:, move nm to dev2: */ | |
1275 | else if (colon && colon[-1] != ':') | |
1276 | { | |
1277 | nm = colon + 1; | |
1278 | colon = 0; | |
1279 | } | |
1280 | if (p[0] == ':' && !colon) | |
1281 | { | |
1282 | if (p[1] == ':') | |
1283 | p++; | |
1284 | colon = p; | |
1285 | } | |
1286 | if (lbrack == rbrack) | |
1287 | if (p[0] == ';') | |
1288 | dots = 2; | |
1289 | else if (p[0] == '.') | |
1290 | dots++; | |
1291 | #endif /* VMS */ | |
1292 | p++; | |
1293 | } | |
1294 | if (!lose) | |
1295 | { | |
1296 | #ifdef VMS | |
1297 | if (index (nm, '/')) | |
d7231f93 KH |
1298 | { |
1299 | nm = sys_translate_unix (nm); | |
1300 | return make_specified_string (nm, -1, strlen (nm), | |
1301 | STRING_MULTIBYTE (name)); | |
1302 | } | |
570d7624 | 1303 | #endif /* VMS */ |
199607e4 RS |
1304 | #ifdef DOS_NT |
1305 | /* Make sure directories are all separated with / or \ as | |
1306 | desired, but avoid allocation of a new string when not | |
1307 | required. */ | |
1308 | CORRECT_DIR_SEPS (nm); | |
1309 | #ifdef WINDOWSNT | |
1310 | if (IS_DIRECTORY_SEP (nm[1])) | |
1311 | { | |
d5db4077 | 1312 | if (strcmp (nm, SDATA (name)) != 0) |
3f817c73 KH |
1313 | name = make_specified_string (nm, -1, strlen (nm), |
1314 | STRING_MULTIBYTE (name)); | |
199607e4 RS |
1315 | } |
1316 | else | |
1317 | #endif | |
1318 | /* drive must be set, so this is okay */ | |
d5db4077 | 1319 | if (strcmp (nm - 2, SDATA (name)) != 0) |
199607e4 | 1320 | { |
3f817c73 KH |
1321 | char temp[] = " :"; |
1322 | ||
1323 | name = make_specified_string (nm, -1, p - nm, | |
1324 | STRING_MULTIBYTE (name)); | |
1325 | temp[0] = DRIVE_LETTER (drive); | |
1326 | name = concat2 (build_string (temp), name); | |
199607e4 RS |
1327 | } |
1328 | return name; | |
1329 | #else /* not DOS_NT */ | |
d5db4077 | 1330 | if (nm == SDATA (name)) |
570d7624 | 1331 | return name; |
d7231f93 KH |
1332 | return make_specified_string (nm, -1, strlen (nm), |
1333 | STRING_MULTIBYTE (name)); | |
5e570b75 | 1334 | #endif /* not DOS_NT */ |
570d7624 JB |
1335 | } |
1336 | } | |
1337 | ||
199607e4 RS |
1338 | /* At this point, nm might or might not be an absolute file name. We |
1339 | need to expand ~ or ~user if present, otherwise prefix nm with | |
1340 | default_directory if nm is not absolute, and finally collapse /./ | |
1341 | and /foo/../ sequences. | |
1342 | ||
1343 | We set newdir to be the appropriate prefix if one is needed: | |
1344 | - the relevant user directory if nm starts with ~ or ~user | |
1345 | - the specified drive's working dir (DOS/NT only) if nm does not | |
1346 | start with / | |
1347 | - the value of default_directory. | |
1348 | ||
1349 | Note that these prefixes are not guaranteed to be absolute (except | |
1350 | for the working dir of a drive). Therefore, to ensure we always | |
1351 | return an absolute name, if the final prefix is not absolute we | |
1352 | append it to the current working directory. */ | |
570d7624 JB |
1353 | |
1354 | newdir = 0; | |
1355 | ||
1356 | if (nm[0] == '~') /* prefix ~ */ | |
c77d647e | 1357 | { |
5e570b75 | 1358 | if (IS_DIRECTORY_SEP (nm[1]) |
570d7624 | 1359 | #ifdef VMS |
c77d647e | 1360 | || nm[1] == ':' |
5e570b75 | 1361 | #endif /* VMS */ |
c77d647e JB |
1362 | || nm[1] == 0) /* ~ by itself */ |
1363 | { | |
1364 | if (!(newdir = (unsigned char *) egetenv ("HOME"))) | |
1365 | newdir = (unsigned char *) ""; | |
199607e4 | 1366 | nm++; |
5e570b75 | 1367 | #ifdef DOS_NT |
9a1dc3be | 1368 | collapse_newdir = 0; |
4c3c22f3 | 1369 | #endif |
570d7624 | 1370 | #ifdef VMS |
c77d647e | 1371 | nm++; /* Don't leave the slash in nm. */ |
5e570b75 | 1372 | #endif /* VMS */ |
c77d647e JB |
1373 | } |
1374 | else /* ~user/filename */ | |
1375 | { | |
5e570b75 | 1376 | for (p = nm; *p && (!IS_DIRECTORY_SEP (*p) |
570d7624 | 1377 | #ifdef VMS |
c77d647e | 1378 | && *p != ':' |
5e570b75 | 1379 | #endif /* VMS */ |
c77d647e JB |
1380 | ); p++); |
1381 | o = (unsigned char *) alloca (p - nm + 1); | |
1382 | bcopy ((char *) nm, o, p - nm); | |
1383 | o [p - nm] = 0; | |
1384 | ||
1385 | pw = (struct passwd *) getpwnam (o + 1); | |
1386 | if (pw) | |
1387 | { | |
1388 | newdir = (unsigned char *) pw -> pw_dir; | |
570d7624 | 1389 | #ifdef VMS |
c77d647e | 1390 | nm = p + 1; /* skip the terminator */ |
570d7624 | 1391 | #else |
c77d647e | 1392 | nm = p; |
199607e4 | 1393 | #ifdef DOS_NT |
9a1dc3be | 1394 | collapse_newdir = 0; |
199607e4 | 1395 | #endif |
5e570b75 | 1396 | #endif /* VMS */ |
c77d647e | 1397 | } |
e5d77022 | 1398 | |
c77d647e JB |
1399 | /* If we don't find a user of that name, leave the name |
1400 | unchanged; don't move nm forward to p. */ | |
1401 | } | |
1402 | } | |
570d7624 | 1403 | |
5e570b75 | 1404 | #ifdef DOS_NT |
199607e4 RS |
1405 | /* On DOS and Windows, nm is absolute if a drive name was specified; |
1406 | use the drive's current directory as the prefix if needed. */ | |
1407 | if (!newdir && drive) | |
1408 | { | |
1409 | /* Get default directory if needed to make nm absolute. */ | |
1410 | if (!IS_DIRECTORY_SEP (nm[0])) | |
1411 | { | |
1412 | newdir = alloca (MAXPATHLEN + 1); | |
1413 | if (!getdefdir (toupper (drive) - 'A' + 1, newdir)) | |
1414 | newdir = NULL; | |
1415 | } | |
1416 | if (!newdir) | |
1417 | { | |
1418 | /* Either nm starts with /, or drive isn't mounted. */ | |
1419 | newdir = alloca (4); | |
f94988a7 | 1420 | newdir[0] = DRIVE_LETTER (drive); |
199607e4 RS |
1421 | newdir[1] = ':'; |
1422 | newdir[2] = '/'; | |
1423 | newdir[3] = 0; | |
1424 | } | |
1425 | } | |
5e570b75 | 1426 | #endif /* DOS_NT */ |
199607e4 RS |
1427 | |
1428 | /* Finally, if no prefix has been specified and nm is not absolute, | |
1429 | then it must be expanded relative to default_directory. */ | |
1430 | ||
34097368 | 1431 | if (1 |
199607e4 RS |
1432 | #ifndef DOS_NT |
1433 | /* /... alone is not absolute on DOS and Windows. */ | |
34097368 | 1434 | && !IS_DIRECTORY_SEP (nm[0]) |
199607e4 RS |
1435 | #endif |
1436 | #ifdef WINDOWSNT | |
34097368 | 1437 | && !(IS_DIRECTORY_SEP (nm[0]) && IS_DIRECTORY_SEP (nm[1])) |
199607e4 RS |
1438 | #endif |
1439 | #ifdef VMS | |
1440 | && !index (nm, ':') | |
1441 | #endif | |
570d7624 JB |
1442 | && !newdir) |
1443 | { | |
d5db4077 | 1444 | newdir = SDATA (default_directory); |
f0f95d31 RS |
1445 | #ifdef DOS_NT |
1446 | /* Note if special escape prefix is present, but remove for now. */ | |
1447 | if (newdir[0] == '/' && newdir[1] == ':') | |
1448 | { | |
1449 | is_escaped = 1; | |
1450 | newdir += 2; | |
1451 | } | |
1452 | #endif | |
570d7624 JB |
1453 | } |
1454 | ||
5e570b75 | 1455 | #ifdef DOS_NT |
199607e4 RS |
1456 | if (newdir) |
1457 | { | |
1458 | /* First ensure newdir is an absolute name. */ | |
1459 | if ( | |
1460 | /* Detect MSDOS file names with drive specifiers. */ | |
1461 | ! (IS_DRIVE (newdir[0]) | |
1462 | && IS_DEVICE_SEP (newdir[1]) && IS_DIRECTORY_SEP (newdir[2])) | |
1463 | #ifdef WINDOWSNT | |
1464 | /* Detect Windows file names in UNC format. */ | |
1465 | && ! (IS_DIRECTORY_SEP (newdir[0]) && IS_DIRECTORY_SEP (newdir[1])) | |
1466 | #endif | |
1467 | ) | |
1468 | { | |
1469 | /* Effectively, let newdir be (expand-file-name newdir cwd). | |
1470 | Because of the admonition against calling expand-file-name | |
1471 | when we have pointers into lisp strings, we accomplish this | |
1472 | indirectly by prepending newdir to nm if necessary, and using | |
1473 | cwd (or the wd of newdir's drive) as the new newdir. */ | |
1474 | ||
c70a4df6 | 1475 | if (IS_DRIVE (newdir[0]) && IS_DEVICE_SEP (newdir[1])) |
199607e4 RS |
1476 | { |
1477 | drive = newdir[0]; | |
1478 | newdir += 2; | |
1479 | } | |
1480 | if (!IS_DIRECTORY_SEP (nm[0])) | |
1481 | { | |
1482 | char * tmp = alloca (strlen (newdir) + strlen (nm) + 2); | |
1483 | file_name_as_directory (tmp, newdir); | |
1484 | strcat (tmp, nm); | |
1485 | nm = tmp; | |
1486 | } | |
1487 | newdir = alloca (MAXPATHLEN + 1); | |
1488 | if (drive) | |
1489 | { | |
1490 | if (!getdefdir (toupper (drive) - 'A' + 1, newdir)) | |
1491 | newdir = "/"; | |
1492 | } | |
1493 | else | |
1494 | getwd (newdir); | |
1495 | } | |
1496 | ||
1497 | /* Strip off drive name from prefix, if present. */ | |
c70a4df6 | 1498 | if (IS_DRIVE (newdir[0]) && IS_DEVICE_SEP (newdir[1])) |
199607e4 RS |
1499 | { |
1500 | drive = newdir[0]; | |
1501 | newdir += 2; | |
1502 | } | |
1503 | ||
1504 | /* Keep only a prefix from newdir if nm starts with slash | |
82330e7f | 1505 | (//server/share for UNC, nothing otherwise). */ |
9a1dc3be | 1506 | if (IS_DIRECTORY_SEP (nm[0]) && collapse_newdir) |
199607e4 RS |
1507 | { |
1508 | #ifdef WINDOWSNT | |
1509 | if (IS_DIRECTORY_SEP (newdir[0]) && IS_DIRECTORY_SEP (newdir[1])) | |
1510 | { | |
1511 | newdir = strcpy (alloca (strlen (newdir) + 1), newdir); | |
1512 | p = newdir + 2; | |
1513 | while (*p && !IS_DIRECTORY_SEP (*p)) p++; | |
1514 | p++; | |
1515 | while (*p && !IS_DIRECTORY_SEP (*p)) p++; | |
1516 | *p = 0; | |
1517 | } | |
1518 | else | |
1519 | #endif | |
1520 | newdir = ""; | |
1521 | } | |
1522 | } | |
5e570b75 | 1523 | #endif /* DOS_NT */ |
199607e4 RS |
1524 | |
1525 | if (newdir) | |
bfb61299 | 1526 | { |
57676091 | 1527 | /* Get rid of any slash at the end of newdir, unless newdir is |
f0f95d31 | 1528 | just / or // (an incomplete UNC name). */ |
199607e4 | 1529 | length = strlen (newdir); |
f0f95d31 | 1530 | if (length > 1 && IS_DIRECTORY_SEP (newdir[length - 1]) |
57676091 RS |
1531 | #ifdef WINDOWSNT |
1532 | && !(length == 2 && IS_DIRECTORY_SEP (newdir[0])) | |
1533 | #endif | |
1534 | ) | |
bfb61299 JB |
1535 | { |
1536 | unsigned char *temp = (unsigned char *) alloca (length); | |
1537 | bcopy (newdir, temp, length - 1); | |
1538 | temp[length - 1] = 0; | |
1539 | newdir = temp; | |
1540 | } | |
1541 | tlen = length + 1; | |
1542 | } | |
1543 | else | |
1544 | tlen = 0; | |
570d7624 | 1545 | |
bfb61299 JB |
1546 | /* Now concatenate the directory and name to new space in the stack frame */ |
1547 | tlen += strlen (nm) + 1; | |
5e570b75 | 1548 | #ifdef DOS_NT |
f0f95d31 RS |
1549 | /* Reserve space for drive specifier and escape prefix, since either |
1550 | or both may need to be inserted. (The Microsoft x86 compiler | |
5e570b75 | 1551 | produces incorrect code if the following two lines are combined.) */ |
f0f95d31 RS |
1552 | target = (unsigned char *) alloca (tlen + 4); |
1553 | target += 4; | |
5e570b75 | 1554 | #else /* not DOS_NT */ |
570d7624 | 1555 | target = (unsigned char *) alloca (tlen); |
5e570b75 | 1556 | #endif /* not DOS_NT */ |
570d7624 JB |
1557 | *target = 0; |
1558 | ||
1559 | if (newdir) | |
1560 | { | |
1561 | #ifndef VMS | |
5e570b75 | 1562 | if (nm[0] == 0 || IS_DIRECTORY_SEP (nm[0])) |
f5321b5c | 1563 | { |
3ea2d8b2 | 1564 | #ifdef DOS_NT |
f5321b5c RS |
1565 | /* If newdir is effectively "C:/", then the drive letter will have |
1566 | been stripped and newdir will be "/". Concatenating with an | |
1567 | absolute directory in nm produces "//", which will then be | |
1568 | incorrectly treated as a network share. Ignore newdir in | |
1569 | this case (keeping the drive letter). */ | |
efdc16c9 | 1570 | if (!(drive && nm[0] && IS_DIRECTORY_SEP (newdir[0]) |
f5321b5c RS |
1571 | && newdir[1] == '\0')) |
1572 | #endif | |
1573 | strcpy (target, newdir); | |
1574 | } | |
570d7624 JB |
1575 | else |
1576 | #endif | |
c77d647e | 1577 | file_name_as_directory (target, newdir); |
570d7624 JB |
1578 | } |
1579 | ||
1580 | strcat (target, nm); | |
1581 | #ifdef VMS | |
1582 | if (index (target, '/')) | |
1583 | strcpy (target, sys_translate_unix (target)); | |
1584 | #endif /* VMS */ | |
1585 | ||
199607e4 RS |
1586 | /* ASSERT (IS_DIRECTORY_SEP (target[0])) if not VMS */ |
1587 | ||
214378ec GM |
1588 | /* Now canonicalize by removing `//', `/.' and `/foo/..' if they |
1589 | appear. */ | |
570d7624 JB |
1590 | |
1591 | p = target; | |
1592 | o = target; | |
1593 | ||
1594 | while (*p) | |
1595 | { | |
1596 | #ifdef VMS | |
1597 | if (*p != ']' && *p != '>' && *p != '-') | |
1598 | { | |
1599 | if (*p == '\\') | |
1600 | p++; | |
1601 | *o++ = *p++; | |
1602 | } | |
1603 | else if ((p[0] == ']' || p[0] == '>') && p[0] == p[1] + 2) | |
1604 | /* brackets are offset from each other by 2 */ | |
1605 | { | |
1606 | p += 2; | |
1607 | if (*p != '.' && *p != '-' && o[-1] != '.') | |
1608 | /* convert [foo][bar] to [bar] */ | |
1609 | while (o[-1] != '[' && o[-1] != '<') | |
1610 | o--; | |
1611 | else if (*p == '-' && *o != '.') | |
1612 | *--p = '.'; | |
1613 | } | |
1614 | else if (p[0] == '-' && o[-1] == '.' && | |
1615 | (p[1] == '.' || p[1] == ']' || p[1] == '>')) | |
1616 | /* flush .foo.- ; leave - if stopped by '[' or '<' */ | |
1617 | { | |
1618 | do | |
1619 | o--; | |
1620 | while (o[-1] != '.' && o[-1] != '[' && o[-1] != '<'); | |
5e570b75 | 1621 | if (p[1] == '.') /* foo.-.bar ==> bar. */ |
570d7624 JB |
1622 | p += 2; |
1623 | else if (o[-1] == '.') /* '.foo.-]' ==> ']' */ | |
1624 | p++, o--; | |
1625 | /* else [foo.-] ==> [-] */ | |
1626 | } | |
1627 | else | |
1628 | { | |
ad204e95 | 1629 | #ifdef NO_HYPHENS_IN_FILENAMES |
570d7624 JB |
1630 | if (*p == '-' && |
1631 | o[-1] != '[' && o[-1] != '<' && o[-1] != '.' && | |
1632 | p[1] != ']' && p[1] != '>' && p[1] != '.') | |
1633 | *p = '_'; | |
ad204e95 | 1634 | #endif /* NO_HYPHENS_IN_FILENAMES */ |
570d7624 JB |
1635 | *o++ = *p++; |
1636 | } | |
1637 | #else /* not VMS */ | |
5e570b75 RS |
1638 | if (!IS_DIRECTORY_SEP (*p)) |
1639 | { | |
570d7624 JB |
1640 | *o++ = *p++; |
1641 | } | |
5e570b75 | 1642 | else if (IS_DIRECTORY_SEP (p[0]) |
c77d647e | 1643 | && p[1] == '.' |
5e570b75 | 1644 | && (IS_DIRECTORY_SEP (p[2]) |
c77d647e JB |
1645 | || p[2] == 0)) |
1646 | { | |
1647 | /* If "/." is the entire filename, keep the "/". Otherwise, | |
1648 | just delete the whole "/.". */ | |
1649 | if (o == target && p[2] == '\0') | |
1650 | *o++ = *p; | |
1651 | p += 2; | |
1652 | } | |
c0fa5a0b | 1653 | else if (IS_DIRECTORY_SEP (p[0]) && p[1] == '.' && p[2] == '.' |
aa4060b9 EZ |
1654 | /* `/../' is the "superroot" on certain file systems. |
1655 | Turned off on DOS_NT systems because they have no | |
1656 | "superroot" and because this causes us to produce | |
1657 | file names like "d:/../foo" which fail file-related | |
1658 | functions of the underlying OS. (To reproduce, try a | |
1659 | long series of "../../" in default_directory, longer | |
1660 | than the number of levels from the root.) */ | |
1661 | #ifndef DOS_NT | |
570d7624 | 1662 | && o != target |
aa4060b9 | 1663 | #endif |
5e570b75 | 1664 | && (IS_DIRECTORY_SEP (p[3]) || p[3] == 0)) |
570d7624 | 1665 | { |
5e570b75 | 1666 | while (o != target && (--o) && !IS_DIRECTORY_SEP (*o)) |
570d7624 | 1667 | ; |
795de720 RS |
1668 | /* Keep initial / only if this is the whole name. */ |
1669 | if (o == target && IS_ANY_SEP (*o) && p[3] == 0) | |
51b1d12e | 1670 | ++o; |
570d7624 JB |
1671 | p += 3; |
1672 | } | |
214378ec GM |
1673 | else if (p > target |
1674 | && IS_DIRECTORY_SEP (p[0]) && IS_DIRECTORY_SEP (p[1])) | |
1675 | { | |
1676 | /* Collapse multiple `/' in a row. */ | |
1677 | *o++ = *p++; | |
1678 | while (IS_DIRECTORY_SEP (*p)) | |
1679 | ++p; | |
1680 | } | |
570d7624 | 1681 | else |
5e570b75 | 1682 | { |
570d7624 JB |
1683 | *o++ = *p++; |
1684 | } | |
1685 | #endif /* not VMS */ | |
1686 | } | |
1687 | ||
5e570b75 | 1688 | #ifdef DOS_NT |
199607e4 | 1689 | /* At last, set drive name. */ |
5e570b75 | 1690 | #ifdef WINDOWSNT |
199607e4 RS |
1691 | /* Except for network file name. */ |
1692 | if (!(IS_DIRECTORY_SEP (target[0]) && IS_DIRECTORY_SEP (target[1]))) | |
5e570b75 | 1693 | #endif /* WINDOWSNT */ |
4c3c22f3 | 1694 | { |
199607e4 | 1695 | if (!drive) abort (); |
4c3c22f3 | 1696 | target -= 2; |
f94988a7 | 1697 | target[0] = DRIVE_LETTER (drive); |
4c3c22f3 RS |
1698 | target[1] = ':'; |
1699 | } | |
f0f95d31 RS |
1700 | /* Reinsert the escape prefix if required. */ |
1701 | if (is_escaped) | |
1702 | { | |
1703 | target -= 2; | |
1704 | target[0] = '/'; | |
1705 | target[1] = ':'; | |
1706 | } | |
199607e4 | 1707 | CORRECT_DIR_SEPS (target); |
5e570b75 | 1708 | #endif /* DOS_NT */ |
4c3c22f3 | 1709 | |
beb402de KG |
1710 | result = make_specified_string (target, -1, o - target, |
1711 | STRING_MULTIBYTE (name)); | |
1712 | ||
1713 | /* Again look to see if the file name has special constructs in it | |
1714 | and perhaps call the corresponding file handler. This is needed | |
1715 | for filenames such as "/foo/../user@host:/bar/../baz". Expanding | |
1716 | the ".." component gives us "/user@host:/bar/../baz" which needs | |
1717 | to be expanded again. */ | |
1718 | handler = Ffind_file_name_handler (result, Qexpand_file_name); | |
1719 | if (!NILP (handler)) | |
1720 | return call3 (handler, Qexpand_file_name, result, default_directory); | |
1721 | ||
1722 | return result; | |
570d7624 | 1723 | } |
5e570b75 | 1724 | |
4887597a EZ |
1725 | #if 0 |
1726 | /* PLEASE DO NOT DELETE THIS COMMENTED-OUT VERSION! | |
1727 | This is the old version of expand-file-name, before it was thoroughly | |
1728 | rewritten for Emacs 10.31. We leave this version here commented-out, | |
1729 | because the code is very complex and likely to have subtle bugs. If | |
1730 | bugs _are_ found, it might be of interest to look at the old code and | |
1731 | see what did it do in the relevant situation. | |
1732 | ||
1733 | Don't remove this code: it's true that it will be accessible via CVS, | |
1734 | but a few years from deletion, people will forget it is there. */ | |
1735 | ||
1736 | /* Changed this DEFUN to a DEAFUN, so as not to confuse `make-docfile'. */ | |
1737 | DEAFUN ("expand-file-name", Fexpand_file_name, Sexpand_file_name, 1, 2, 0, | |
1738 | "Convert FILENAME to absolute, and canonicalize it.\n\ | |
1739 | Second arg DEFAULT is directory to start with if FILENAME is relative\n\ | |
c70a4df6 | 1740 | \(does not start with slash); if DEFAULT is nil or missing,\n\ |
4887597a EZ |
1741 | the current buffer's value of default-directory is used.\n\ |
1742 | Filenames containing `.' or `..' as components are simplified;\n\ | |
1743 | initial `~/' expands to your home directory.\n\ | |
1744 | See also the function `substitute-in-file-name'.") | |
1745 | (name, defalt) | |
1746 | Lisp_Object name, defalt; | |
1747 | { | |
1748 | unsigned char *nm; | |
1749 | ||
1750 | register unsigned char *newdir, *p, *o; | |
1751 | int tlen; | |
1752 | unsigned char *target; | |
1753 | struct passwd *pw; | |
1754 | int lose; | |
1755 | #ifdef VMS | |
1756 | unsigned char * colon = 0; | |
1757 | unsigned char * close = 0; | |
1758 | unsigned char * slash = 0; | |
1759 | unsigned char * brack = 0; | |
1760 | int lbrack = 0, rbrack = 0; | |
1761 | int dots = 0; | |
1762 | #endif /* VMS */ | |
1763 | ||
b7826503 | 1764 | CHECK_STRING (name); |
4887597a EZ |
1765 | |
1766 | #ifdef VMS | |
1767 | /* Filenames on VMS are always upper case. */ | |
1768 | name = Fupcase (name); | |
1769 | #endif | |
1770 | ||
d5db4077 | 1771 | nm = SDATA (name); |
4887597a EZ |
1772 | |
1773 | /* If nm is absolute, flush ...// and detect /./ and /../. | |
1774 | If no /./ or /../ we can return right away. */ | |
1775 | if ( | |
1776 | nm[0] == '/' | |
1777 | #ifdef VMS | |
1778 | || index (nm, ':') | |
1779 | #endif /* VMS */ | |
1780 | ) | |
1781 | { | |
1782 | p = nm; | |
1783 | lose = 0; | |
1784 | while (*p) | |
1785 | { | |
1786 | if (p[0] == '/' && p[1] == '/' | |
1787 | #ifdef APOLLO | |
1788 | /* // at start of filename is meaningful on Apollo system. */ | |
1789 | && nm != p | |
1790 | #endif /* APOLLO */ | |
1791 | ) | |
1792 | nm = p + 1; | |
1793 | if (p[0] == '/' && p[1] == '~') | |
1794 | nm = p + 1, lose = 1; | |
1795 | if (p[0] == '/' && p[1] == '.' | |
1796 | && (p[2] == '/' || p[2] == 0 | |
1797 | || (p[2] == '.' && (p[3] == '/' || p[3] == 0)))) | |
1798 | lose = 1; | |
1799 | #ifdef VMS | |
1800 | if (p[0] == '\\') | |
1801 | lose = 1; | |
1802 | if (p[0] == '/') { | |
1803 | /* if dev:[dir]/, move nm to / */ | |
1804 | if (!slash && p > nm && (brack || colon)) { | |
1805 | nm = (brack ? brack + 1 : colon + 1); | |
1806 | lbrack = rbrack = 0; | |
1807 | brack = 0; | |
1808 | colon = 0; | |
1809 | } | |
1810 | slash = p; | |
1811 | } | |
1812 | if (p[0] == '-') | |
1813 | #ifndef VMS4_4 | |
1814 | /* VMS pre V4.4,convert '-'s in filenames. */ | |
1815 | if (lbrack == rbrack) | |
1816 | { | |
1817 | if (dots < 2) /* this is to allow negative version numbers */ | |
1818 | p[0] = '_'; | |
1819 | } | |
1820 | else | |
1821 | #endif /* VMS4_4 */ | |
1822 | if (lbrack > rbrack && | |
1823 | ((p[-1] == '.' || p[-1] == '[' || p[-1] == '<') && | |
1824 | (p[1] == '.' || p[1] == ']' || p[1] == '>'))) | |
1825 | lose = 1; | |
1826 | #ifndef VMS4_4 | |
1827 | else | |
1828 | p[0] = '_'; | |
1829 | #endif /* VMS4_4 */ | |
1830 | /* count open brackets, reset close bracket pointer */ | |
1831 | if (p[0] == '[' || p[0] == '<') | |
1832 | lbrack++, brack = 0; | |
1833 | /* count close brackets, set close bracket pointer */ | |
1834 | if (p[0] == ']' || p[0] == '>') | |
1835 | rbrack++, brack = p; | |
1836 | /* detect ][ or >< */ | |
1837 | if ((p[0] == ']' || p[0] == '>') && (p[1] == '[' || p[1] == '<')) | |
1838 | lose = 1; | |
1839 | if ((p[0] == ':' || p[0] == ']' || p[0] == '>') && p[1] == '~') | |
1840 | nm = p + 1, lose = 1; | |
1841 | if (p[0] == ':' && (colon || slash)) | |
1842 | /* if dev1:[dir]dev2:, move nm to dev2: */ | |
1843 | if (brack) | |
1844 | { | |
1845 | nm = brack + 1; | |
1846 | brack = 0; | |
1847 | } | |
1848 | /* If /name/dev:, move nm to dev: */ | |
1849 | else if (slash) | |
1850 | nm = slash + 1; | |
1851 | /* If node::dev:, move colon following dev */ | |
1852 | else if (colon && colon[-1] == ':') | |
1853 | colon = p; | |
1854 | /* If dev1:dev2:, move nm to dev2: */ | |
1855 | else if (colon && colon[-1] != ':') | |
1856 | { | |
1857 | nm = colon + 1; | |
1858 | colon = 0; | |
1859 | } | |
1860 | if (p[0] == ':' && !colon) | |
1861 | { | |
1862 | if (p[1] == ':') | |
1863 | p++; | |
1864 | colon = p; | |
1865 | } | |
1866 | if (lbrack == rbrack) | |
1867 | if (p[0] == ';') | |
1868 | dots = 2; | |
1869 | else if (p[0] == '.') | |
1870 | dots++; | |
1871 | #endif /* VMS */ | |
1872 | p++; | |
1873 | } | |
1874 | if (!lose) | |
1875 | { | |
1876 | #ifdef VMS | |
1877 | if (index (nm, '/')) | |
1878 | return build_string (sys_translate_unix (nm)); | |
1879 | #endif /* VMS */ | |
d5db4077 | 1880 | if (nm == SDATA (name)) |
4887597a EZ |
1881 | return name; |
1882 | return build_string (nm); | |
1883 | } | |
1884 | } | |
1885 | ||
1886 | /* Now determine directory to start with and put it in NEWDIR */ | |
1887 | ||
1888 | newdir = 0; | |
1889 | ||
1890 | if (nm[0] == '~') /* prefix ~ */ | |
1891 | if (nm[1] == '/' | |
1892 | #ifdef VMS | |
1893 | || nm[1] == ':' | |
1894 | #endif /* VMS */ | |
1895 | || nm[1] == 0)/* ~/filename */ | |
1896 | { | |
1897 | if (!(newdir = (unsigned char *) egetenv ("HOME"))) | |
1898 | newdir = (unsigned char *) ""; | |
1899 | nm++; | |
1900 | #ifdef VMS | |
1901 | nm++; /* Don't leave the slash in nm. */ | |
1902 | #endif /* VMS */ | |
1903 | } | |
1904 | else /* ~user/filename */ | |
1905 | { | |
1906 | /* Get past ~ to user */ | |
1907 | unsigned char *user = nm + 1; | |
1908 | /* Find end of name. */ | |
1909 | unsigned char *ptr = (unsigned char *) index (user, '/'); | |
1910 | int len = ptr ? ptr - user : strlen (user); | |
1911 | #ifdef VMS | |
1912 | unsigned char *ptr1 = index (user, ':'); | |
1913 | if (ptr1 != 0 && ptr1 - user < len) | |
1914 | len = ptr1 - user; | |
1915 | #endif /* VMS */ | |
1916 | /* Copy the user name into temp storage. */ | |
1917 | o = (unsigned char *) alloca (len + 1); | |
1918 | bcopy ((char *) user, o, len); | |
1919 | o[len] = 0; | |
1920 | ||
1921 | /* Look up the user name. */ | |
1922 | pw = (struct passwd *) getpwnam (o + 1); | |
1923 | if (!pw) | |
1924 | error ("\"%s\" isn't a registered user", o + 1); | |
1925 | ||
1926 | newdir = (unsigned char *) pw->pw_dir; | |
1927 | ||
1928 | /* Discard the user name from NM. */ | |
1929 | nm += len; | |
1930 | } | |
1931 | ||
1932 | if (nm[0] != '/' | |
1933 | #ifdef VMS | |
1934 | && !index (nm, ':') | |
1935 | #endif /* not VMS */ | |
1936 | && !newdir) | |
1937 | { | |
1938 | if (NILP (defalt)) | |
1939 | defalt = current_buffer->directory; | |
b7826503 | 1940 | CHECK_STRING (defalt); |
d5db4077 | 1941 | newdir = SDATA (defalt); |
4887597a EZ |
1942 | } |
1943 | ||
1944 | /* Now concatenate the directory and name to new space in the stack frame */ | |
1945 | ||
1946 | tlen = (newdir ? strlen (newdir) + 1 : 0) + strlen (nm) + 1; | |
1947 | target = (unsigned char *) alloca (tlen); | |
1948 | *target = 0; | |
1949 | ||
1950 | if (newdir) | |
1951 | { | |
1952 | #ifndef VMS | |
1953 | if (nm[0] == 0 || nm[0] == '/') | |
1954 | strcpy (target, newdir); | |
1955 | else | |
1956 | #endif | |
1957 | file_name_as_directory (target, newdir); | |
1958 | } | |
1959 | ||
1960 | strcat (target, nm); | |
1961 | #ifdef VMS | |
1962 | if (index (target, '/')) | |
1963 | strcpy (target, sys_translate_unix (target)); | |
1964 | #endif /* VMS */ | |
1965 | ||
1966 | /* Now canonicalize by removing /. and /foo/.. if they appear */ | |
1967 | ||
1968 | p = target; | |
1969 | o = target; | |
1970 | ||
1971 | while (*p) | |
1972 | { | |
1973 | #ifdef VMS | |
1974 | if (*p != ']' && *p != '>' && *p != '-') | |
1975 | { | |
1976 | if (*p == '\\') | |
1977 | p++; | |
1978 | *o++ = *p++; | |
1979 | } | |
1980 | else if ((p[0] == ']' || p[0] == '>') && p[0] == p[1] + 2) | |
1981 | /* brackets are offset from each other by 2 */ | |
1982 | { | |
1983 | p += 2; | |
1984 | if (*p != '.' && *p != '-' && o[-1] != '.') | |
1985 | /* convert [foo][bar] to [bar] */ | |
1986 | while (o[-1] != '[' && o[-1] != '<') | |
1987 | o--; | |
1988 | else if (*p == '-' && *o != '.') | |
1989 | *--p = '.'; | |
1990 | } | |
1991 | else if (p[0] == '-' && o[-1] == '.' && | |
1992 | (p[1] == '.' || p[1] == ']' || p[1] == '>')) | |
1993 | /* flush .foo.- ; leave - if stopped by '[' or '<' */ | |
1994 | { | |
1995 | do | |
1996 | o--; | |
1997 | while (o[-1] != '.' && o[-1] != '[' && o[-1] != '<'); | |
1998 | if (p[1] == '.') /* foo.-.bar ==> bar. */ | |
1999 | p += 2; | |
2000 | else if (o[-1] == '.') /* '.foo.-]' ==> ']' */ | |
2001 | p++, o--; | |
2002 | /* else [foo.-] ==> [-] */ | |
2003 | } | |
2004 | else | |
2005 | { | |
2006 | #ifndef VMS4_4 | |
2007 | if (*p == '-' && | |
2008 | o[-1] != '[' && o[-1] != '<' && o[-1] != '.' && | |
2009 | p[1] != ']' && p[1] != '>' && p[1] != '.') | |
2010 | *p = '_'; | |
2011 | #endif /* VMS4_4 */ | |
2012 | *o++ = *p++; | |
2013 | } | |
2014 | #else /* not VMS */ | |
2015 | if (*p != '/') | |
2016 | { | |
2017 | *o++ = *p++; | |
2018 | } | |
2019 | else if (!strncmp (p, "//", 2) | |
2020 | #ifdef APOLLO | |
2021 | /* // at start of filename is meaningful in Apollo system. */ | |
2022 | && o != target | |
2023 | #endif /* APOLLO */ | |
2024 | ) | |
2025 | { | |
2026 | o = target; | |
2027 | p++; | |
2028 | } | |
2029 | else if (p[0] == '/' && p[1] == '.' && | |
2030 | (p[2] == '/' || p[2] == 0)) | |
2031 | p += 2; | |
2032 | else if (!strncmp (p, "/..", 3) | |
2033 | /* `/../' is the "superroot" on certain file systems. */ | |
2034 | && o != target | |
2035 | && (p[3] == '/' || p[3] == 0)) | |
2036 | { | |
2037 | while (o != target && *--o != '/') | |
2038 | ; | |
2039 | #ifdef APOLLO | |
2040 | if (o == target + 1 && o[-1] == '/' && o[0] == '/') | |
2041 | ++o; | |
2042 | else | |
2043 | #endif /* APOLLO */ | |
2044 | if (o == target && *o == '/') | |
2045 | ++o; | |
2046 | p += 3; | |
2047 | } | |
2048 | else | |
2049 | { | |
2050 | *o++ = *p++; | |
2051 | } | |
2052 | #endif /* not VMS */ | |
2053 | } | |
2054 | ||
2055 | return make_string (target, o - target); | |
2056 | } | |
2057 | #endif | |
570d7624 | 2058 | \f |
c70a4df6 SM |
2059 | /* If /~ or // appears, discard everything through first slash. */ |
2060 | static int | |
2061 | file_name_absolute_p (filename) | |
2062 | const unsigned char *filename; | |
2063 | { | |
2064 | return | |
2065 | (IS_DIRECTORY_SEP (*filename) || *filename == '~' | |
2066 | #ifdef VMS | |
2067 | /* ??? This criterion is probably wrong for '<'. */ | |
2068 | || index (filename, ':') || index (filename, '<') | |
2069 | || (*filename == '[' && (filename[1] != '-' | |
2070 | || (filename[2] != '.' && filename[2] != ']')) | |
2071 | && filename[1] != '.') | |
2072 | #endif /* VMS */ | |
2073 | #ifdef DOS_NT | |
2074 | || (IS_DRIVE (*filename) && IS_DEVICE_SEP (filename[1]) | |
2075 | && IS_DIRECTORY_SEP (filename[2])) | |
2076 | #endif | |
2077 | ); | |
2078 | } | |
2079 | ||
2080 | static unsigned char * | |
2081 | search_embedded_absfilename (nm, endp) | |
2082 | unsigned char *nm, *endp; | |
2083 | { | |
2084 | unsigned char *p, *s; | |
2085 | ||
2086 | for (p = nm + 1; p < endp; p++) | |
2087 | { | |
2088 | if ((0 | |
2089 | #ifdef VMS | |
2090 | || p[-1] == ':' || p[-1] == ']' || p[-1] == '>' | |
2091 | #endif /* VMS */ | |
2092 | || IS_DIRECTORY_SEP (p[-1])) | |
2093 | && file_name_absolute_p (p) | |
2094 | #if defined (APOLLO) || defined (WINDOWSNT) || defined(CYGWIN) | |
2095 | /* // at start of file name is meaningful in Apollo, | |
2096 | WindowsNT and Cygwin systems. */ | |
f34574c6 | 2097 | && !(IS_DIRECTORY_SEP (p[0]) && p - 1 == nm) |
c70a4df6 SM |
2098 | #endif /* not (APOLLO || WINDOWSNT || CYGWIN) */ |
2099 | ) | |
2100 | { | |
2101 | for (s = p; *s && (!IS_DIRECTORY_SEP (*s) | |
2102 | #ifdef VMS | |
2103 | && *s != ':' | |
2104 | #endif /* VMS */ | |
2105 | ); s++); | |
2106 | if (p[0] == '~' && s > p + 1) /* we've got "/~something/" */ | |
2107 | { | |
2108 | unsigned char *o = alloca (s - p + 1); | |
2109 | struct passwd *pw; | |
2110 | bcopy (p, o, s - p); | |
2111 | o [s - p] = 0; | |
2112 | ||
2113 | /* If we have ~user and `user' exists, discard | |
2114 | everything up to ~. But if `user' does not exist, leave | |
2115 | ~user alone, it might be a literal file name. */ | |
2116 | if ((pw = getpwnam (o + 1))) | |
2117 | return p; | |
2118 | else | |
2119 | xfree (pw); | |
2120 | } | |
2121 | else | |
2122 | return p; | |
2123 | } | |
2124 | } | |
2125 | return NULL; | |
2126 | } | |
2127 | ||
570d7624 | 2128 | DEFUN ("substitute-in-file-name", Fsubstitute_in_file_name, |
8c1a1077 PJ |
2129 | Ssubstitute_in_file_name, 1, 1, 0, |
2130 | doc: /* Substitute environment variables referred to in FILENAME. | |
2131 | `$FOO' where FOO is an environment variable name means to substitute | |
2132 | the value of that variable. The variable name should be terminated | |
2133 | with a character not a letter, digit or underscore; otherwise, enclose | |
2134 | the entire variable name in braces. | |
2135 | If `/~' appears, all of FILENAME through that `/' is discarded. | |
2136 | ||
2137 | On VMS, `$' substitution is not done; this function does little and only | |
2138 | duplicates what `expand-file-name' does. */) | |
2139 | (filename) | |
3b7f6e60 | 2140 | Lisp_Object filename; |
570d7624 JB |
2141 | { |
2142 | unsigned char *nm; | |
2143 | ||
2144 | register unsigned char *s, *p, *o, *x, *endp; | |
6bbd7a29 | 2145 | unsigned char *target = NULL; |
570d7624 JB |
2146 | int total = 0; |
2147 | int substituted = 0; | |
2148 | unsigned char *xnm; | |
8ce069f5 | 2149 | Lisp_Object handler; |
570d7624 | 2150 | |
b7826503 | 2151 | CHECK_STRING (filename); |
570d7624 | 2152 | |
8ce069f5 RS |
2153 | /* If the file name has special constructs in it, |
2154 | call the corresponding file handler. */ | |
3b7f6e60 | 2155 | handler = Ffind_file_name_handler (filename, Qsubstitute_in_file_name); |
8ce069f5 | 2156 | if (!NILP (handler)) |
3b7f6e60 | 2157 | return call2 (handler, Qsubstitute_in_file_name, filename); |
8ce069f5 | 2158 | |
d5db4077 | 2159 | nm = SDATA (filename); |
199607e4 RS |
2160 | #ifdef DOS_NT |
2161 | nm = strcpy (alloca (strlen (nm) + 1), nm); | |
2162 | CORRECT_DIR_SEPS (nm); | |
d5db4077 | 2163 | substituted = (strcmp (nm, SDATA (filename)) != 0); |
a5a1cc06 | 2164 | #endif |
d5db4077 | 2165 | endp = nm + SBYTES (filename); |
570d7624 | 2166 | |
82330e7f | 2167 | /* If /~ or // appears, discard everything through first slash. */ |
c70a4df6 SM |
2168 | p = search_embedded_absfilename (nm, endp); |
2169 | if (p) | |
2170 | /* Start over with the new string, so we check the file-name-handler | |
2171 | again. Important with filenames like "/home/foo//:/hello///there" | |
2172 | which whould substitute to "/:/hello///there" rather than "/there". */ | |
2173 | return Fsubstitute_in_file_name | |
2174 | (make_specified_string (p, -1, endp - p, | |
2175 | STRING_MULTIBYTE (filename))); | |
570d7624 | 2176 | |
570d7624 | 2177 | #ifdef VMS |
c70a4df6 | 2178 | return filename; |
570d7624 JB |
2179 | #else |
2180 | ||
2181 | /* See if any variables are substituted into the string | |
2182 | and find the total length of their values in `total' */ | |
2183 | ||
2184 | for (p = nm; p != endp;) | |
2185 | if (*p != '$') | |
2186 | p++; | |
2187 | else | |
2188 | { | |
2189 | p++; | |
2190 | if (p == endp) | |
2191 | goto badsubst; | |
2192 | else if (*p == '$') | |
2193 | { | |
2194 | /* "$$" means a single "$" */ | |
2195 | p++; | |
2196 | total -= 1; | |
2197 | substituted = 1; | |
2198 | continue; | |
2199 | } | |
2200 | else if (*p == '{') | |
2201 | { | |
2202 | o = ++p; | |
2203 | while (p != endp && *p != '}') p++; | |
2204 | if (*p != '}') goto missingclose; | |
2205 | s = p; | |
2206 | } | |
2207 | else | |
2208 | { | |
2209 | o = p; | |
2210 | while (p != endp && (isalnum (*p) || *p == '_')) p++; | |
2211 | s = p; | |
2212 | } | |
2213 | ||
2214 | /* Copy out the variable name */ | |
2215 | target = (unsigned char *) alloca (s - o + 1); | |
2216 | strncpy (target, o, s - o); | |
2217 | target[s - o] = 0; | |
5e570b75 | 2218 | #ifdef DOS_NT |
4c3c22f3 | 2219 | strupr (target); /* $home == $HOME etc. */ |
5e570b75 | 2220 | #endif /* DOS_NT */ |
570d7624 JB |
2221 | |
2222 | /* Get variable value */ | |
2223 | o = (unsigned char *) egetenv (target); | |
8d2ced53 SM |
2224 | if (o) |
2225 | { | |
2226 | total += strlen (o); | |
2227 | substituted = 1; | |
2228 | } | |
2229 | else if (*p == '}') | |
2230 | goto badvar; | |
570d7624 JB |
2231 | } |
2232 | ||
2233 | if (!substituted) | |
3b7f6e60 | 2234 | return filename; |
570d7624 JB |
2235 | |
2236 | /* If substitution required, recopy the string and do it */ | |
2237 | /* Make space in stack frame for the new copy */ | |
d5db4077 | 2238 | xnm = (unsigned char *) alloca (SBYTES (filename) + total + 1); |
570d7624 JB |
2239 | x = xnm; |
2240 | ||
2241 | /* Copy the rest of the name through, replacing $ constructs with values */ | |
2242 | for (p = nm; *p;) | |
2243 | if (*p != '$') | |
2244 | *x++ = *p++; | |
2245 | else | |
2246 | { | |
2247 | p++; | |
2248 | if (p == endp) | |
2249 | goto badsubst; | |
2250 | else if (*p == '$') | |
2251 | { | |
2252 | *x++ = *p++; | |
2253 | continue; | |
2254 | } | |
2255 | else if (*p == '{') | |
2256 | { | |
2257 | o = ++p; | |
2258 | while (p != endp && *p != '}') p++; | |
2259 | if (*p != '}') goto missingclose; | |
2260 | s = p++; | |
2261 | } | |
2262 | else | |
2263 | { | |
2264 | o = p; | |
2265 | while (p != endp && (isalnum (*p) || *p == '_')) p++; | |
2266 | s = p; | |
2267 | } | |
2268 | ||
2269 | /* Copy out the variable name */ | |
2270 | target = (unsigned char *) alloca (s - o + 1); | |
2271 | strncpy (target, o, s - o); | |
2272 | target[s - o] = 0; | |
5e570b75 | 2273 | #ifdef DOS_NT |
4c3c22f3 | 2274 | strupr (target); /* $home == $HOME etc. */ |
5e570b75 | 2275 | #endif /* DOS_NT */ |
570d7624 JB |
2276 | |
2277 | /* Get variable value */ | |
2278 | o = (unsigned char *) egetenv (target); | |
570d7624 | 2279 | if (!o) |
8d2ced53 SM |
2280 | { |
2281 | *x++ = '$'; | |
2282 | strcpy (x, target); x+= strlen (target); | |
2283 | } | |
2284 | else if (STRING_MULTIBYTE (filename)) | |
60d67b83 RS |
2285 | { |
2286 | /* If the original string is multibyte, | |
2287 | convert what we substitute into multibyte. */ | |
60d67b83 RS |
2288 | while (*o) |
2289 | { | |
ce51c54c KH |
2290 | int c = unibyte_char_to_multibyte (*o++); |
2291 | x += CHAR_STRING (c, x); | |
60d67b83 RS |
2292 | } |
2293 | } | |
2294 | else | |
2295 | { | |
2296 | strcpy (x, o); | |
2297 | x += strlen (o); | |
2298 | } | |
570d7624 JB |
2299 | } |
2300 | ||
2301 | *x = 0; | |
2302 | ||
82330e7f | 2303 | /* If /~ or // appears, discard everything through first slash. */ |
c70a4df6 SM |
2304 | while ((p = search_embedded_absfilename (xnm, x))) |
2305 | /* This time we do not start over because we've already expanded envvars | |
2306 | and replaced $$ with $. Maybe we should start over as well, but we'd | |
2307 | need to quote some $ to $$ first. */ | |
2308 | xnm = p; | |
570d7624 | 2309 | |
d7231f93 | 2310 | return make_specified_string (xnm, -1, x - xnm, STRING_MULTIBYTE (filename)); |
570d7624 JB |
2311 | |
2312 | badsubst: | |
2313 | error ("Bad format environment-variable substitution"); | |
2314 | missingclose: | |
2315 | error ("Missing \"}\" in environment-variable substitution"); | |
2316 | badvar: | |
2317 | error ("Substituting nonexistent environment variable \"%s\"", target); | |
2318 | ||
2319 | /* NOTREACHED */ | |
2320 | #endif /* not VMS */ | |
6bbd7a29 | 2321 | return Qnil; |
570d7624 JB |
2322 | } |
2323 | \f | |
067ffa38 | 2324 | /* A slightly faster and more convenient way to get |
298b760e | 2325 | (directory-file-name (expand-file-name FOO)). */ |
067ffa38 | 2326 | |
570d7624 JB |
2327 | Lisp_Object |
2328 | expand_and_dir_to_file (filename, defdir) | |
2329 | Lisp_Object filename, defdir; | |
2330 | { | |
199607e4 | 2331 | register Lisp_Object absname; |
570d7624 | 2332 | |
199607e4 | 2333 | absname = Fexpand_file_name (filename, defdir); |
570d7624 JB |
2334 | #ifdef VMS |
2335 | { | |
d5db4077 | 2336 | register int c = SREF (absname, SBYTES (absname) - 1); |
570d7624 | 2337 | if (c == ':' || c == ']' || c == '>') |
199607e4 | 2338 | absname = Fdirectory_file_name (absname); |
570d7624 JB |
2339 | } |
2340 | #else | |
199607e4 | 2341 | /* Remove final slash, if any (unless this is the root dir). |
570d7624 | 2342 | stat behaves differently depending! */ |
d5db4077 KR |
2343 | if (SCHARS (absname) > 1 |
2344 | && IS_DIRECTORY_SEP (SREF (absname, SBYTES (absname) - 1)) | |
2345 | && !IS_DEVICE_SEP (SREF (absname, SBYTES (absname)-2))) | |
ddc61f46 | 2346 | /* We cannot take shortcuts; they might be wrong for magic file names. */ |
199607e4 | 2347 | absname = Fdirectory_file_name (absname); |
570d7624 | 2348 | #endif |
199607e4 | 2349 | return absname; |
570d7624 JB |
2350 | } |
2351 | \f | |
3ed15d97 RS |
2352 | /* Signal an error if the file ABSNAME already exists. |
2353 | If INTERACTIVE is nonzero, ask the user whether to proceed, | |
2354 | and bypass the error if the user says to go ahead. | |
2355 | QUERYSTRING is a name for the action that is being considered | |
2356 | to alter the file. | |
de1d0127 | 2357 | |
3ed15d97 | 2358 | *STATPTR is used to store the stat information if the file exists. |
de1d0127 | 2359 | If the file does not exist, STATPTR->st_mode is set to 0. |
b8b29dc9 RS |
2360 | If STATPTR is null, we don't store into it. |
2361 | ||
2362 | If QUICK is nonzero, we ask for y or n, not yes or no. */ | |
3ed15d97 | 2363 | |
c4df73f9 | 2364 | void |
b8b29dc9 | 2365 | barf_or_query_if_file_exists (absname, querystring, interactive, statptr, quick) |
570d7624 JB |
2366 | Lisp_Object absname; |
2367 | unsigned char *querystring; | |
2368 | int interactive; | |
3ed15d97 | 2369 | struct stat *statptr; |
b8b29dc9 | 2370 | int quick; |
570d7624 | 2371 | { |
643c73b9 | 2372 | register Lisp_Object tem, encoded_filename; |
4018b5ef | 2373 | struct stat statbuf; |
570d7624 JB |
2374 | struct gcpro gcpro1; |
2375 | ||
643c73b9 RS |
2376 | encoded_filename = ENCODE_FILE (absname); |
2377 | ||
4018b5ef RS |
2378 | /* stat is a good way to tell whether the file exists, |
2379 | regardless of what access permissions it has. */ | |
f72b5416 | 2380 | if (lstat (SDATA (encoded_filename), &statbuf) >= 0) |
570d7624 JB |
2381 | { |
2382 | if (! interactive) | |
2383 | Fsignal (Qfile_already_exists, | |
2384 | Fcons (build_string ("File already exists"), | |
2385 | Fcons (absname, Qnil))); | |
2386 | GCPRO1 (absname); | |
67e8e2b8 RS |
2387 | tem = format2 ("File %s already exists; %s anyway? ", |
2388 | absname, build_string (querystring)); | |
b8b29dc9 RS |
2389 | if (quick) |
2390 | tem = Fy_or_n_p (tem); | |
2391 | else | |
2392 | tem = do_yes_or_no_p (tem); | |
570d7624 | 2393 | UNGCPRO; |
265a9e55 | 2394 | if (NILP (tem)) |
570d7624 JB |
2395 | Fsignal (Qfile_already_exists, |
2396 | Fcons (build_string ("File already exists"), | |
2397 | Fcons (absname, Qnil))); | |
3ed15d97 RS |
2398 | if (statptr) |
2399 | *statptr = statbuf; | |
2400 | } | |
2401 | else | |
2402 | { | |
2403 | if (statptr) | |
2404 | statptr->st_mode = 0; | |
570d7624 JB |
2405 | } |
2406 | return; | |
2407 | } | |
2408 | ||
c50f15d0 | 2409 | DEFUN ("copy-file", Fcopy_file, Scopy_file, 2, 5, |
7c0f6118 | 2410 | "fCopy file: \nGCopy %s to file: \np\nP", |
8c1a1077 PJ |
2411 | doc: /* Copy FILE to NEWNAME. Both args must be strings. |
2412 | If NEWNAME names a directory, copy FILE there. | |
2413 | Signals a `file-already-exists' error if file NEWNAME already exists, | |
2414 | unless a third argument OK-IF-ALREADY-EXISTS is supplied and non-nil. | |
2415 | A number as third arg means request confirmation if NEWNAME already exists. | |
2416 | This is what happens in interactive use with M-x. | |
7f08b80e | 2417 | Always sets the file modes of the output file to match the input file. |
c50f15d0 | 2418 | |
7f08b80e | 2419 | Fourth arg KEEP-TIME non-nil means give the output file the same |
8c1a1077 | 2420 | last-modified time as the old one. (This works on only some systems.) |
c50f15d0 | 2421 | |
7fce7dfe EZ |
2422 | A prefix arg makes KEEP-TIME non-nil. |
2423 | ||
2424 | The optional fifth arg MUSTBENEW, if non-nil, insists on a check | |
2425 | for an existing file with the same name. If MUSTBENEW is `excl', | |
2426 | that means to get an error if the file already exists; never overwrite. | |
2427 | If MUSTBENEW is neither nil nor `excl', that means ask for | |
2428 | confirmation before overwriting, but do go ahead and overwrite the file | |
2429 | if the user confirms. */) | |
c50f15d0 RS |
2430 | (file, newname, ok_if_already_exists, keep_time, mustbenew) |
2431 | Lisp_Object file, newname, ok_if_already_exists, keep_time, mustbenew; | |
570d7624 JB |
2432 | { |
2433 | int ifd, ofd, n; | |
2434 | char buf[16 * 1024]; | |
3ed15d97 | 2435 | struct stat st, out_st; |
32f4334d | 2436 | Lisp_Object handler; |
b1d1b865 | 2437 | struct gcpro gcpro1, gcpro2, gcpro3, gcpro4; |
aed13378 | 2438 | int count = SPECPDL_INDEX (); |
f73b0ada | 2439 | int input_file_statable_p; |
b1d1b865 | 2440 | Lisp_Object encoded_file, encoded_newname; |
570d7624 | 2441 | |
b1d1b865 RS |
2442 | encoded_file = encoded_newname = Qnil; |
2443 | GCPRO4 (file, newname, encoded_file, encoded_newname); | |
b7826503 PJ |
2444 | CHECK_STRING (file); |
2445 | CHECK_STRING (newname); | |
b1d1b865 | 2446 | |
c50f15d0 RS |
2447 | if (!NILP (mustbenew) && !EQ (mustbenew, Qexcl)) |
2448 | barf_or_query_if_file_exists (newname, "overwrite", 1, 0, 1); | |
2449 | ||
a9d14e54 | 2450 | if (!NILP (Ffile_directory_p (newname))) |
dcdbbb5d | 2451 | newname = Fexpand_file_name (Ffile_name_nondirectory (file), newname); |
a9d14e54 GM |
2452 | else |
2453 | newname = Fexpand_file_name (newname, Qnil); | |
2454 | ||
3b7f6e60 | 2455 | file = Fexpand_file_name (file, Qnil); |
32f4334d | 2456 | |
0bf2eed2 | 2457 | /* If the input file name has special constructs in it, |
32f4334d | 2458 | call the corresponding file handler. */ |
3b7f6e60 | 2459 | handler = Ffind_file_name_handler (file, Qcopy_file); |
0bf2eed2 | 2460 | /* Likewise for output file name. */ |
51cf6d37 | 2461 | if (NILP (handler)) |
49307295 | 2462 | handler = Ffind_file_name_handler (newname, Qcopy_file); |
32f4334d | 2463 | if (!NILP (handler)) |
3b7f6e60 | 2464 | RETURN_UNGCPRO (call5 (handler, Qcopy_file, file, newname, |
8ca6602c | 2465 | ok_if_already_exists, keep_time)); |
32f4334d | 2466 | |
b1d1b865 RS |
2467 | encoded_file = ENCODE_FILE (file); |
2468 | encoded_newname = ENCODE_FILE (newname); | |
2469 | ||
265a9e55 | 2470 | if (NILP (ok_if_already_exists) |
93c30b5f | 2471 | || INTEGERP (ok_if_already_exists)) |
b1d1b865 | 2472 | barf_or_query_if_file_exists (encoded_newname, "copy to it", |
b8b29dc9 | 2473 | INTEGERP (ok_if_already_exists), &out_st, 0); |
d5db4077 | 2474 | else if (stat (SDATA (encoded_newname), &out_st) < 0) |
3ed15d97 | 2475 | out_st.st_mode = 0; |
570d7624 | 2476 | |
e8691c59 | 2477 | #ifdef WINDOWSNT |
d5db4077 | 2478 | if (!CopyFile (SDATA (encoded_file), |
efdc16c9 | 2479 | SDATA (encoded_newname), |
e8691c59 GM |
2480 | FALSE)) |
2481 | report_file_error ("Copying file", Fcons (file, Fcons (newname, Qnil))); | |
8b53dc06 JR |
2482 | /* CopyFile retains the timestamp by default. */ |
2483 | else if (NILP (keep_time)) | |
e8691c59 GM |
2484 | { |
2485 | EMACS_TIME now; | |
ad497129 JR |
2486 | DWORD attributes; |
2487 | char * filename; | |
2488 | ||
e8691c59 | 2489 | EMACS_GET_TIME (now); |
d5db4077 | 2490 | filename = SDATA (encoded_newname); |
ad497129 JR |
2491 | |
2492 | /* Ensure file is writable while its modified time is set. */ | |
2493 | attributes = GetFileAttributes (filename); | |
02cca86b | 2494 | SetFileAttributes (filename, attributes & ~FILE_ATTRIBUTE_READONLY); |
ad497129 JR |
2495 | if (set_file_times (filename, now, now)) |
2496 | { | |
2497 | /* Restore original attributes. */ | |
2498 | SetFileAttributes (filename, attributes); | |
2499 | Fsignal (Qfile_date_error, | |
2500 | Fcons (build_string ("Cannot set file date"), | |
2501 | Fcons (newname, Qnil))); | |
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 | ||
f9ba66ce | 2520 | #if !defined (DOS_NT) || __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 EZ |
2551 | O_WRONLY | O_TRUNC | O_CREAT |
2552 | | (EQ (mustbenew, Qexcl) ? 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 | |
2557 | | (EQ (mustbenew, Qexcl) ? O_EXCL : 0), | |
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 | |
5acac34e | 2573 | /* Closing the output clobbers the file times on some systems. */ |
68c45bf0 | 2574 | if (emacs_close (ofd) < 0) |
5acac34e RS |
2575 | report_file_error ("I/O error", Fcons (newname, Qnil)); |
2576 | ||
f73b0ada | 2577 | if (input_file_statable_p) |
570d7624 | 2578 | { |
8ca6602c | 2579 | if (!NILP (keep_time)) |
570d7624 | 2580 | { |
de5bf5d3 JB |
2581 | EMACS_TIME atime, mtime; |
2582 | EMACS_SET_SECS_USECS (atime, st.st_atime, 0); | |
2583 | EMACS_SET_SECS_USECS (mtime, st.st_mtime, 0); | |
d5db4077 | 2584 | if (set_file_times (SDATA (encoded_newname), |
b1d1b865 | 2585 | atime, mtime)) |
c0b7b21c | 2586 | Fsignal (Qfile_date_error, |
d1b9ed63 | 2587 | Fcons (build_string ("Cannot set file date"), |
3dbcf3f6 | 2588 | Fcons (newname, Qnil))); |
570d7624 | 2589 | } |
2dc3be7e | 2590 | #ifndef MSDOS |
d5db4077 | 2591 | chmod (SDATA (encoded_newname), st.st_mode & 07777); |
2dc3be7e RS |
2592 | #else /* MSDOS */ |
2593 | #if defined (__DJGPP__) && __DJGPP__ > 1 | |
2594 | /* In DJGPP v2.0 and later, fstat usually returns true file mode bits, | |
2595 | and if it can't, it tells so. Otherwise, under MSDOS we usually | |
2596 | get only the READ bit, which will make the copied file read-only, | |
2597 | so it's better not to chmod at all. */ | |
2598 | if ((_djstat_flags & _STFAIL_WRITEBIT) == 0) | |
d5db4077 | 2599 | chmod (SDATA (encoded_newname), st.st_mode & 07777); |
2dc3be7e RS |
2600 | #endif /* DJGPP version 2 or newer */ |
2601 | #endif /* MSDOS */ | |
570d7624 JB |
2602 | } |
2603 | ||
68c45bf0 | 2604 | emacs_close (ifd); |
e8691c59 | 2605 | #endif /* WINDOWSNT */ |
5acac34e | 2606 | |
b5148e85 RS |
2607 | /* Discard the unwind protects. */ |
2608 | specpdl_ptr = specpdl + count; | |
2609 | ||
570d7624 JB |
2610 | UNGCPRO; |
2611 | return Qnil; | |
2612 | } | |
385b6cc7 | 2613 | \f |
9bbe01fb | 2614 | DEFUN ("make-directory-internal", Fmake_directory_internal, |
353cfc19 | 2615 | Smake_directory_internal, 1, 1, 0, |
8c1a1077 PJ |
2616 | doc: /* Create a new directory named DIRECTORY. */) |
2617 | (directory) | |
3b7f6e60 | 2618 | Lisp_Object directory; |
570d7624 | 2619 | { |
19290c65 | 2620 | const unsigned char *dir; |
32f4334d | 2621 | Lisp_Object handler; |
b1d1b865 | 2622 | Lisp_Object encoded_dir; |
570d7624 | 2623 | |
b7826503 | 2624 | CHECK_STRING (directory); |
3b7f6e60 | 2625 | directory = Fexpand_file_name (directory, Qnil); |
32f4334d | 2626 | |
3b7f6e60 | 2627 | handler = Ffind_file_name_handler (directory, Qmake_directory_internal); |
32f4334d | 2628 | if (!NILP (handler)) |
3b7f6e60 | 2629 | return call2 (handler, Qmake_directory_internal, directory); |
9bbe01fb | 2630 | |
b1d1b865 RS |
2631 | encoded_dir = ENCODE_FILE (directory); |
2632 | ||
d5db4077 | 2633 | dir = SDATA (encoded_dir); |
570d7624 | 2634 | |
5e570b75 RS |
2635 | #ifdef WINDOWSNT |
2636 | if (mkdir (dir) != 0) | |
2637 | #else | |
570d7624 | 2638 | if (mkdir (dir, 0777) != 0) |
5e570b75 | 2639 | #endif |
3b7f6e60 | 2640 | report_file_error ("Creating directory", Flist (1, &directory)); |
570d7624 | 2641 | |
32f4334d | 2642 | return Qnil; |
570d7624 JB |
2643 | } |
2644 | ||
aa734e17 | 2645 | DEFUN ("delete-directory", Fdelete_directory, Sdelete_directory, 1, 1, "FDelete directory: ", |
efdc16c9 | 2646 | doc: /* Delete the directory named DIRECTORY. Does not follow symlinks. */) |
8c1a1077 | 2647 | (directory) |
3b7f6e60 | 2648 | Lisp_Object directory; |
570d7624 | 2649 | { |
19290c65 | 2650 | const unsigned char *dir; |
32f4334d | 2651 | Lisp_Object handler; |
b1d1b865 | 2652 | Lisp_Object encoded_dir; |
570d7624 | 2653 | |
b7826503 | 2654 | CHECK_STRING (directory); |
3b7f6e60 | 2655 | directory = Fdirectory_file_name (Fexpand_file_name (directory, Qnil)); |
570d7624 | 2656 | |
3b7f6e60 | 2657 | handler = Ffind_file_name_handler (directory, Qdelete_directory); |
32f4334d | 2658 | if (!NILP (handler)) |
3b7f6e60 | 2659 | return call2 (handler, Qdelete_directory, directory); |
32f4334d | 2660 | |
b1d1b865 RS |
2661 | encoded_dir = ENCODE_FILE (directory); |
2662 | ||
d5db4077 | 2663 | dir = SDATA (encoded_dir); |
b1d1b865 | 2664 | |
570d7624 | 2665 | if (rmdir (dir) != 0) |
3b7f6e60 | 2666 | report_file_error ("Removing directory", Flist (1, &directory)); |
570d7624 JB |
2667 | |
2668 | return Qnil; | |
2669 | } | |
2670 | ||
2671 | DEFUN ("delete-file", Fdelete_file, Sdelete_file, 1, 1, "fDelete file: ", | |
efdc16c9 | 2672 | doc: /* Delete file named FILENAME. If it is a symlink, remove the symlink. |
8c1a1077 PJ |
2673 | If file has multiple names, it continues to exist with the other names. */) |
2674 | (filename) | |
570d7624 JB |
2675 | Lisp_Object filename; |
2676 | { | |
32f4334d | 2677 | Lisp_Object handler; |
b1d1b865 | 2678 | Lisp_Object encoded_file; |
efdc16c9 | 2679 | struct gcpro gcpro1; |
b1d1b865 | 2680 | |
efdc16c9 | 2681 | GCPRO1 (filename); |
b4bd27c5 RS |
2682 | if (!NILP (Ffile_directory_p (filename)) |
2683 | && NILP (Ffile_symlink_p (filename))) | |
efdc16c9 FP |
2684 | Fsignal (Qfile_error, |
2685 | Fcons (build_string ("Removing old name: is a directory"), | |
2686 | Fcons (filename, Qnil))); | |
2687 | UNGCPRO; | |
570d7624 | 2688 | filename = Fexpand_file_name (filename, Qnil); |
32f4334d | 2689 | |
49307295 | 2690 | handler = Ffind_file_name_handler (filename, Qdelete_file); |
32f4334d | 2691 | if (!NILP (handler)) |
8a9b0da9 | 2692 | return call2 (handler, Qdelete_file, filename); |
32f4334d | 2693 | |
b1d1b865 RS |
2694 | encoded_file = ENCODE_FILE (filename); |
2695 | ||
d5db4077 | 2696 | if (0 > unlink (SDATA (encoded_file))) |
570d7624 | 2697 | report_file_error ("Removing old name", Flist (1, &filename)); |
8a9b0da9 | 2698 | return Qnil; |
570d7624 JB |
2699 | } |
2700 | ||
385b6cc7 RS |
2701 | static Lisp_Object |
2702 | internal_delete_file_1 (ignore) | |
2703 | Lisp_Object ignore; | |
2704 | { | |
2705 | return Qt; | |
2706 | } | |
2707 | ||
2708 | /* Delete file FILENAME, returning 1 if successful and 0 if failed. */ | |
2709 | ||
2710 | int | |
2711 | internal_delete_file (filename) | |
2712 | Lisp_Object filename; | |
2713 | { | |
2714 | return NILP (internal_condition_case_1 (Fdelete_file, filename, | |
2715 | Qt, internal_delete_file_1)); | |
2716 | } | |
2717 | \f | |
570d7624 | 2718 | DEFUN ("rename-file", Frename_file, Srename_file, 2, 3, |
7c0f6118 | 2719 | "fRename file: \nGRename %s to file: \np", |
a4e03fe5 | 2720 | doc: /* Rename FILE as NEWNAME. Both args must be strings. |
8c1a1077 PJ |
2721 | If file has names other than FILE, it continues to have those names. |
2722 | Signals a `file-already-exists' error if a file NEWNAME already exists | |
2723 | unless optional third argument OK-IF-ALREADY-EXISTS is non-nil. | |
2724 | A number as third arg means request confirmation if NEWNAME already exists. | |
2725 | This is what happens in interactive use with M-x. */) | |
2726 | (file, newname, ok_if_already_exists) | |
3b7f6e60 | 2727 | Lisp_Object file, newname, ok_if_already_exists; |
570d7624 JB |
2728 | { |
2729 | #ifdef NO_ARG_ARRAY | |
2730 | Lisp_Object args[2]; | |
2731 | #endif | |
32f4334d | 2732 | Lisp_Object handler; |
f72b5416 JD |
2733 | struct gcpro gcpro1, gcpro2, gcpro3, gcpro4, gcpro5; |
2734 | Lisp_Object encoded_file, encoded_newname, symlink_target; | |
570d7624 | 2735 | |
f72b5416 JD |
2736 | symlink_target = encoded_file = encoded_newname = Qnil; |
2737 | GCPRO5 (file, newname, encoded_file, encoded_newname, symlink_target); | |
b7826503 PJ |
2738 | CHECK_STRING (file); |
2739 | CHECK_STRING (newname); | |
3b7f6e60 | 2740 | file = Fexpand_file_name (file, Qnil); |
1ffc5c90 RS |
2741 | |
2742 | if (!NILP (Ffile_directory_p (newname))) | |
2743 | newname = Fexpand_file_name (Ffile_name_nondirectory (file), newname); | |
2744 | else | |
2745 | newname = Fexpand_file_name (newname, Qnil); | |
32f4334d RS |
2746 | |
2747 | /* If the file name has special constructs in it, | |
2748 | call the corresponding file handler. */ | |
3b7f6e60 | 2749 | handler = Ffind_file_name_handler (file, Qrename_file); |
51cf6d37 | 2750 | if (NILP (handler)) |
49307295 | 2751 | handler = Ffind_file_name_handler (newname, Qrename_file); |
32f4334d | 2752 | if (!NILP (handler)) |
36712b0a | 2753 | RETURN_UNGCPRO (call4 (handler, Qrename_file, |
3b7f6e60 | 2754 | file, newname, ok_if_already_exists)); |
32f4334d | 2755 | |
b1d1b865 RS |
2756 | encoded_file = ENCODE_FILE (file); |
2757 | encoded_newname = ENCODE_FILE (newname); | |
2758 | ||
bc77278f EZ |
2759 | #ifdef DOS_NT |
2760 | /* If the file names are identical but for the case, don't ask for | |
2761 | confirmation: they simply want to change the letter-case of the | |
2762 | file name. */ | |
2763 | if (NILP (Fstring_equal (Fdowncase (file), Fdowncase (newname)))) | |
2764 | #endif | |
265a9e55 | 2765 | if (NILP (ok_if_already_exists) |
93c30b5f | 2766 | || INTEGERP (ok_if_already_exists)) |
b1d1b865 | 2767 | barf_or_query_if_file_exists (encoded_newname, "rename to it", |
b8b29dc9 | 2768 | INTEGERP (ok_if_already_exists), 0, 0); |
570d7624 | 2769 | #ifndef BSD4_1 |
d5db4077 | 2770 | if (0 > rename (SDATA (encoded_file), SDATA (encoded_newname))) |
570d7624 | 2771 | #else |
d5db4077 KR |
2772 | if (0 > link (SDATA (encoded_file), SDATA (encoded_newname)) |
2773 | || 0 > unlink (SDATA (encoded_file))) | |
570d7624 JB |
2774 | #endif |
2775 | { | |
2776 | if (errno == EXDEV) | |
2777 | { | |
440c7d00 | 2778 | #ifdef S_IFLNK |
f72b5416 | 2779 | symlink_target = Ffile_symlink_p (file); |
440c7d00 JD |
2780 | if (! NILP (symlink_target)) |
2781 | Fmake_symbolic_link (symlink_target, newname, | |
f59abab9 | 2782 | NILP (ok_if_already_exists) ? Qnil : Qt); |
440c7d00 JD |
2783 | else |
2784 | #endif | |
f72b5416 JD |
2785 | Fcopy_file (file, newname, |
2786 | /* We have already prompted if it was an integer, | |
2787 | so don't have copy-file prompt again. */ | |
c50f15d0 RS |
2788 | NILP (ok_if_already_exists) ? Qnil : Qt, |
2789 | Qt, Qnil); | |
3b7f6e60 | 2790 | Fdelete_file (file); |
570d7624 JB |
2791 | } |
2792 | else | |
2793 | #ifdef NO_ARG_ARRAY | |
2794 | { | |
3b7f6e60 | 2795 | args[0] = file; |
570d7624 JB |
2796 | args[1] = newname; |
2797 | report_file_error ("Renaming", Flist (2, args)); | |
2798 | } | |
2799 | #else | |
3b7f6e60 | 2800 | report_file_error ("Renaming", Flist (2, &file)); |
570d7624 JB |
2801 | #endif |
2802 | } | |
2803 | UNGCPRO; | |
2804 | return Qnil; | |
2805 | } | |
2806 | ||
2807 | DEFUN ("add-name-to-file", Fadd_name_to_file, Sadd_name_to_file, 2, 3, | |
7c0f6118 | 2808 | "fAdd name to file: \nGName to add to %s: \np", |
a4e03fe5 | 2809 | doc: /* Give FILE additional name NEWNAME. Both args must be strings. |
8c1a1077 PJ |
2810 | Signals a `file-already-exists' error if a file NEWNAME already exists |
2811 | unless optional third argument OK-IF-ALREADY-EXISTS is non-nil. | |
2812 | A number as third arg means request confirmation if NEWNAME already exists. | |
2813 | This is what happens in interactive use with M-x. */) | |
2814 | (file, newname, ok_if_already_exists) | |
3b7f6e60 | 2815 | Lisp_Object file, newname, ok_if_already_exists; |
570d7624 JB |
2816 | { |
2817 | #ifdef NO_ARG_ARRAY | |
2818 | Lisp_Object args[2]; | |
2819 | #endif | |
32f4334d | 2820 | Lisp_Object handler; |
b1d1b865 RS |
2821 | Lisp_Object encoded_file, encoded_newname; |
2822 | struct gcpro gcpro1, gcpro2, gcpro3, gcpro4; | |
570d7624 | 2823 | |
b1d1b865 RS |
2824 | GCPRO4 (file, newname, encoded_file, encoded_newname); |
2825 | encoded_file = encoded_newname = Qnil; | |
b7826503 PJ |
2826 | CHECK_STRING (file); |
2827 | CHECK_STRING (newname); | |
3b7f6e60 | 2828 | file = Fexpand_file_name (file, Qnil); |
1ffc5c90 RS |
2829 | |
2830 | if (!NILP (Ffile_directory_p (newname))) | |
2831 | newname = Fexpand_file_name (Ffile_name_nondirectory (file), newname); | |
2832 | else | |
2833 | newname = Fexpand_file_name (newname, Qnil); | |
32f4334d RS |
2834 | |
2835 | /* If the file name has special constructs in it, | |
2836 | call the corresponding file handler. */ | |
3b7f6e60 | 2837 | handler = Ffind_file_name_handler (file, Qadd_name_to_file); |
32f4334d | 2838 | if (!NILP (handler)) |
3b7f6e60 | 2839 | RETURN_UNGCPRO (call4 (handler, Qadd_name_to_file, file, |
36712b0a | 2840 | newname, ok_if_already_exists)); |
32f4334d | 2841 | |
adc6741c RS |
2842 | /* If the new name has special constructs in it, |
2843 | call the corresponding file handler. */ | |
2844 | handler = Ffind_file_name_handler (newname, Qadd_name_to_file); | |
2845 | if (!NILP (handler)) | |
3b7f6e60 | 2846 | RETURN_UNGCPRO (call4 (handler, Qadd_name_to_file, file, |
adc6741c RS |
2847 | newname, ok_if_already_exists)); |
2848 | ||
b1d1b865 RS |
2849 | encoded_file = ENCODE_FILE (file); |
2850 | encoded_newname = ENCODE_FILE (newname); | |
2851 | ||
265a9e55 | 2852 | if (NILP (ok_if_already_exists) |
93c30b5f | 2853 | || INTEGERP (ok_if_already_exists)) |
b1d1b865 | 2854 | barf_or_query_if_file_exists (encoded_newname, "make it a new name", |
b8b29dc9 | 2855 | INTEGERP (ok_if_already_exists), 0, 0); |
5e570b75 | 2856 | |
d5db4077 KR |
2857 | unlink (SDATA (newname)); |
2858 | if (0 > link (SDATA (encoded_file), SDATA (encoded_newname))) | |
570d7624 JB |
2859 | { |
2860 | #ifdef NO_ARG_ARRAY | |
3b7f6e60 | 2861 | args[0] = file; |
570d7624 JB |
2862 | args[1] = newname; |
2863 | report_file_error ("Adding new name", Flist (2, args)); | |
2864 | #else | |
3b7f6e60 | 2865 | report_file_error ("Adding new name", Flist (2, &file)); |
570d7624 JB |
2866 | #endif |
2867 | } | |
2868 | ||
2869 | UNGCPRO; | |
2870 | return Qnil; | |
2871 | } | |
2872 | ||
2873 | #ifdef S_IFLNK | |
2874 | DEFUN ("make-symbolic-link", Fmake_symbolic_link, Smake_symbolic_link, 2, 3, | |
7c0f6118 | 2875 | "FMake symbolic link to file: \nGMake symbolic link to file %s: \np", |
68780e2a RS |
2876 | doc: /* Make a symbolic link to FILENAME, named LINKNAME. |
2877 | Both args must be strings. | |
8c1a1077 PJ |
2878 | Signals a `file-already-exists' error if a file LINKNAME already exists |
2879 | unless optional third argument OK-IF-ALREADY-EXISTS is non-nil. | |
2880 | A number as third arg means request confirmation if LINKNAME already exists. | |
2881 | This happens for interactive use with M-x. */) | |
2882 | (filename, linkname, ok_if_already_exists) | |
e5d77022 | 2883 | Lisp_Object filename, linkname, ok_if_already_exists; |
570d7624 JB |
2884 | { |
2885 | #ifdef NO_ARG_ARRAY | |
2886 | Lisp_Object args[2]; | |
2887 | #endif | |
32f4334d | 2888 | Lisp_Object handler; |
b1d1b865 RS |
2889 | Lisp_Object encoded_filename, encoded_linkname; |
2890 | struct gcpro gcpro1, gcpro2, gcpro3, gcpro4; | |
570d7624 | 2891 | |
b1d1b865 RS |
2892 | GCPRO4 (filename, linkname, encoded_filename, encoded_linkname); |
2893 | encoded_filename = encoded_linkname = Qnil; | |
b7826503 PJ |
2894 | CHECK_STRING (filename); |
2895 | CHECK_STRING (linkname); | |
d9bc1c99 RS |
2896 | /* If the link target has a ~, we must expand it to get |
2897 | a truly valid file name. Otherwise, do not expand; | |
2898 | we want to permit links to relative file names. */ | |
d5db4077 | 2899 | if (SREF (filename, 0) == '~') |
d9bc1c99 | 2900 | filename = Fexpand_file_name (filename, Qnil); |
1ffc5c90 RS |
2901 | |
2902 | if (!NILP (Ffile_directory_p (linkname))) | |
dac24db4 | 2903 | linkname = Fexpand_file_name (Ffile_name_nondirectory (filename), linkname); |
1ffc5c90 RS |
2904 | else |
2905 | linkname = Fexpand_file_name (linkname, Qnil); | |
32f4334d RS |
2906 | |
2907 | /* If the file name has special constructs in it, | |
2908 | call the corresponding file handler. */ | |
49307295 | 2909 | handler = Ffind_file_name_handler (filename, Qmake_symbolic_link); |
32f4334d | 2910 | if (!NILP (handler)) |
36712b0a KH |
2911 | RETURN_UNGCPRO (call4 (handler, Qmake_symbolic_link, filename, |
2912 | linkname, ok_if_already_exists)); | |
32f4334d | 2913 | |
adc6741c RS |
2914 | /* If the new link name has special constructs in it, |
2915 | call the corresponding file handler. */ | |
2916 | handler = Ffind_file_name_handler (linkname, Qmake_symbolic_link); | |
2917 | if (!NILP (handler)) | |
2918 | RETURN_UNGCPRO (call4 (handler, Qmake_symbolic_link, filename, | |
2919 | linkname, ok_if_already_exists)); | |
2920 | ||
b1d1b865 RS |
2921 | encoded_filename = ENCODE_FILE (filename); |
2922 | encoded_linkname = ENCODE_FILE (linkname); | |
2923 | ||
265a9e55 | 2924 | if (NILP (ok_if_already_exists) |
93c30b5f | 2925 | || INTEGERP (ok_if_already_exists)) |
b1d1b865 | 2926 | barf_or_query_if_file_exists (encoded_linkname, "make it a link", |
b8b29dc9 | 2927 | INTEGERP (ok_if_already_exists), 0, 0); |
d5db4077 KR |
2928 | if (0 > symlink (SDATA (encoded_filename), |
2929 | SDATA (encoded_linkname))) | |
570d7624 JB |
2930 | { |
2931 | /* If we didn't complain already, silently delete existing file. */ | |
2932 | if (errno == EEXIST) | |
2933 | { | |
d5db4077 KR |
2934 | unlink (SDATA (encoded_linkname)); |
2935 | if (0 <= symlink (SDATA (encoded_filename), | |
2936 | SDATA (encoded_linkname))) | |
1a04498e KH |
2937 | { |
2938 | UNGCPRO; | |
2939 | return Qnil; | |
2940 | } | |
570d7624 JB |
2941 | } |
2942 | ||
2943 | #ifdef NO_ARG_ARRAY | |
2944 | args[0] = filename; | |
e5d77022 | 2945 | args[1] = linkname; |
570d7624 JB |
2946 | report_file_error ("Making symbolic link", Flist (2, args)); |
2947 | #else | |
2948 | report_file_error ("Making symbolic link", Flist (2, &filename)); | |
2949 | #endif | |
2950 | } | |
2951 | UNGCPRO; | |
2952 | return Qnil; | |
2953 | } | |
2954 | #endif /* S_IFLNK */ | |
2955 | ||
2956 | #ifdef VMS | |
2957 | ||
2958 | DEFUN ("define-logical-name", Fdefine_logical_name, Sdefine_logical_name, | |
2959 | 2, 2, "sDefine logical name: \nsDefine logical name %s as: ", | |
8c1a1077 PJ |
2960 | doc: /* Define the job-wide logical name NAME to have the value STRING. |
2961 | If STRING is nil or a null string, the logical name NAME is deleted. */) | |
2962 | (name, string) | |
3b7f6e60 | 2963 | Lisp_Object name; |
570d7624 JB |
2964 | Lisp_Object string; |
2965 | { | |
b7826503 | 2966 | CHECK_STRING (name); |
265a9e55 | 2967 | if (NILP (string)) |
d5db4077 | 2968 | delete_logical_name (SDATA (name)); |
570d7624 JB |
2969 | else |
2970 | { | |
b7826503 | 2971 | CHECK_STRING (string); |
570d7624 | 2972 | |
d5db4077 KR |
2973 | if (SCHARS (string) == 0) |
2974 | delete_logical_name (SDATA (name)); | |
570d7624 | 2975 | else |
d5db4077 | 2976 | define_logical_name (SDATA (name), SDATA (string)); |
570d7624 JB |
2977 | } |
2978 | ||
2979 | return string; | |
2980 | } | |
2981 | #endif /* VMS */ | |
2982 | ||
2983 | #ifdef HPUX_NET | |
2984 | ||
2985 | DEFUN ("sysnetunam", Fsysnetunam, Ssysnetunam, 2, 2, 0, | |
8c1a1077 | 2986 | doc: /* Open a network connection to PATH using LOGIN as the login string. */) |
570d7624 JB |
2987 | (path, login) |
2988 | Lisp_Object path, login; | |
2989 | { | |
2990 | int netresult; | |
199607e4 | 2991 | |
b7826503 PJ |
2992 | CHECK_STRING (path); |
2993 | CHECK_STRING (login); | |
199607e4 | 2994 | |
d5db4077 | 2995 | netresult = netunam (SDATA (path), SDATA (login)); |
570d7624 JB |
2996 | |
2997 | if (netresult == -1) | |
2998 | return Qnil; | |
2999 | else | |
3000 | return Qt; | |
3001 | } | |
3002 | #endif /* HPUX_NET */ | |
3003 | \f | |
3004 | DEFUN ("file-name-absolute-p", Ffile_name_absolute_p, Sfile_name_absolute_p, | |
3005 | 1, 1, 0, | |
8c1a1077 PJ |
3006 | doc: /* Return t if file FILENAME specifies an absolute file name. |
3007 | On Unix, this is a name starting with a `/' or a `~'. */) | |
570d7624 JB |
3008 | (filename) |
3009 | Lisp_Object filename; | |
3010 | { | |
b7826503 | 3011 | CHECK_STRING (filename); |
c70a4df6 | 3012 | return file_name_absolute_p (SDATA (filename)) ? Qt : Qnil; |
570d7624 | 3013 | } |
3beeedfe RS |
3014 | \f |
3015 | /* Return nonzero if file FILENAME exists and can be executed. */ | |
3016 | ||
3017 | static int | |
3018 | check_executable (filename) | |
3019 | char *filename; | |
3020 | { | |
3be3c08e RS |
3021 | #ifdef DOS_NT |
3022 | int len = strlen (filename); | |
3023 | char *suffix; | |
3024 | struct stat st; | |
3025 | if (stat (filename, &st) < 0) | |
3026 | return 0; | |
34ead71a | 3027 | #if defined (WINDOWSNT) || (defined (MSDOS) && __DJGPP__ > 1) |
199607e4 RS |
3028 | return ((st.st_mode & S_IEXEC) != 0); |
3029 | #else | |
3be3c08e RS |
3030 | return (S_ISREG (st.st_mode) |
3031 | && len >= 5 | |
3032 | && (stricmp ((suffix = filename + len-4), ".com") == 0 | |
3033 | || stricmp (suffix, ".exe") == 0 | |
2dc3be7e RS |
3034 | || stricmp (suffix, ".bat") == 0) |
3035 | || (st.st_mode & S_IFMT) == S_IFDIR); | |
199607e4 | 3036 | #endif /* not WINDOWSNT */ |
3be3c08e | 3037 | #else /* not DOS_NT */ |
de0be7dd RS |
3038 | #ifdef HAVE_EUIDACCESS |
3039 | return (euidaccess (filename, 1) >= 0); | |
3beeedfe RS |
3040 | #else |
3041 | /* Access isn't quite right because it uses the real uid | |
3042 | and we really want to test with the effective uid. | |
3043 | But Unix doesn't give us a right way to do it. */ | |
3044 | return (access (filename, 1) >= 0); | |
3045 | #endif | |
3be3c08e | 3046 | #endif /* not DOS_NT */ |
3beeedfe RS |
3047 | } |
3048 | ||
3049 | /* Return nonzero if file FILENAME exists and can be written. */ | |
3050 | ||
3051 | static int | |
3052 | check_writable (filename) | |
3053 | char *filename; | |
3054 | { | |
3be3c08e RS |
3055 | #ifdef MSDOS |
3056 | struct stat st; | |
3057 | if (stat (filename, &st) < 0) | |
3058 | return 0; | |
3059 | return (st.st_mode & S_IWRITE || (st.st_mode & S_IFMT) == S_IFDIR); | |
3060 | #else /* not MSDOS */ | |
41f3fb38 KH |
3061 | #ifdef HAVE_EUIDACCESS |
3062 | return (euidaccess (filename, 2) >= 0); | |
3beeedfe RS |
3063 | #else |
3064 | /* Access isn't quite right because it uses the real uid | |
3065 | and we really want to test with the effective uid. | |
3066 | But Unix doesn't give us a right way to do it. | |
3067 | Opening with O_WRONLY could work for an ordinary file, | |
3068 | but would lose for directories. */ | |
3069 | return (access (filename, 2) >= 0); | |
3070 | #endif | |
3be3c08e | 3071 | #endif /* not MSDOS */ |
3beeedfe | 3072 | } |
570d7624 JB |
3073 | |
3074 | DEFUN ("file-exists-p", Ffile_exists_p, Sfile_exists_p, 1, 1, 0, | |
68780e2a RS |
3075 | doc: /* Return t if file FILENAME exists (whether or not you can read it.) |
3076 | See also `file-readable-p' and `file-attributes'. | |
3077 | This returns nil for a symlink to a nonexistent file. | |
3078 | Use `file-symlink-p' to test for such links. */) | |
8c1a1077 | 3079 | (filename) |
570d7624 JB |
3080 | Lisp_Object filename; |
3081 | { | |
199607e4 | 3082 | Lisp_Object absname; |
32f4334d | 3083 | Lisp_Object handler; |
4018b5ef | 3084 | struct stat statbuf; |
570d7624 | 3085 | |
b7826503 | 3086 | CHECK_STRING (filename); |
199607e4 | 3087 | absname = Fexpand_file_name (filename, Qnil); |
32f4334d RS |
3088 | |
3089 | /* If the file name has special constructs in it, | |
3090 | call the corresponding file handler. */ | |
199607e4 | 3091 | handler = Ffind_file_name_handler (absname, Qfile_exists_p); |
32f4334d | 3092 | if (!NILP (handler)) |
199607e4 | 3093 | return call2 (handler, Qfile_exists_p, absname); |
32f4334d | 3094 | |
b1d1b865 RS |
3095 | absname = ENCODE_FILE (absname); |
3096 | ||
d5db4077 | 3097 | return (stat (SDATA (absname), &statbuf) >= 0) ? Qt : Qnil; |
570d7624 JB |
3098 | } |
3099 | ||
3100 | DEFUN ("file-executable-p", Ffile_executable_p, Sfile_executable_p, 1, 1, 0, | |
8c1a1077 PJ |
3101 | doc: /* Return t if FILENAME can be executed by you. |
3102 | For a directory, this means you can access files in that directory. */) | |
3103 | (filename) | |
3104 | Lisp_Object filename; | |
570d7624 | 3105 | { |
199607e4 | 3106 | Lisp_Object absname; |
32f4334d | 3107 | Lisp_Object handler; |
570d7624 | 3108 | |
b7826503 | 3109 | CHECK_STRING (filename); |
199607e4 | 3110 | absname = Fexpand_file_name (filename, Qnil); |
32f4334d RS |
3111 | |
3112 | /* If the file name has special constructs in it, | |
3113 | call the corresponding file handler. */ | |
199607e4 | 3114 | handler = Ffind_file_name_handler (absname, Qfile_executable_p); |
32f4334d | 3115 | if (!NILP (handler)) |
199607e4 | 3116 | return call2 (handler, Qfile_executable_p, absname); |
32f4334d | 3117 | |
b1d1b865 RS |
3118 | absname = ENCODE_FILE (absname); |
3119 | ||
d5db4077 | 3120 | return (check_executable (SDATA (absname)) ? Qt : Qnil); |
570d7624 JB |
3121 | } |
3122 | ||
3123 | DEFUN ("file-readable-p", Ffile_readable_p, Sfile_readable_p, 1, 1, 0, | |
8c1a1077 PJ |
3124 | doc: /* Return t if file FILENAME exists and you can read it. |
3125 | See also `file-exists-p' and `file-attributes'. */) | |
3126 | (filename) | |
570d7624 JB |
3127 | Lisp_Object filename; |
3128 | { | |
199607e4 | 3129 | Lisp_Object absname; |
32f4334d | 3130 | Lisp_Object handler; |
4018b5ef | 3131 | int desc; |
bb369dc6 RS |
3132 | int flags; |
3133 | struct stat statbuf; | |
570d7624 | 3134 | |
b7826503 | 3135 | CHECK_STRING (filename); |
199607e4 | 3136 | absname = Fexpand_file_name (filename, Qnil); |
32f4334d RS |
3137 | |
3138 | /* If the file name has special constructs in it, | |
3139 | call the corresponding file handler. */ | |
199607e4 | 3140 | handler = Ffind_file_name_handler (absname, Qfile_readable_p); |
32f4334d | 3141 | if (!NILP (handler)) |
199607e4 | 3142 | return call2 (handler, Qfile_readable_p, absname); |
32f4334d | 3143 | |
b1d1b865 RS |
3144 | absname = ENCODE_FILE (absname); |
3145 | ||
fb4c6c96 AC |
3146 | #if defined(DOS_NT) || defined(macintosh) |
3147 | /* Under MS-DOS, Windows, and Macintosh, open does not work for | |
3148 | directories. */ | |
d5db4077 | 3149 | if (access (SDATA (absname), 0) == 0) |
a8a7d065 RS |
3150 | return Qt; |
3151 | return Qnil; | |
fb4c6c96 | 3152 | #else /* not DOS_NT and not macintosh */ |
bb369dc6 RS |
3153 | flags = O_RDONLY; |
3154 | #if defined (S_ISFIFO) && defined (O_NONBLOCK) | |
3155 | /* Opening a fifo without O_NONBLOCK can wait. | |
3156 | We don't want to wait. But we don't want to mess wth O_NONBLOCK | |
3157 | except in the case of a fifo, on a system which handles it. */ | |
d5db4077 | 3158 | desc = stat (SDATA (absname), &statbuf); |
bb369dc6 RS |
3159 | if (desc < 0) |
3160 | return Qnil; | |
3161 | if (S_ISFIFO (statbuf.st_mode)) | |
3162 | flags |= O_NONBLOCK; | |
3163 | #endif | |
d5db4077 | 3164 | desc = emacs_open (SDATA (absname), flags, 0); |
4018b5ef RS |
3165 | if (desc < 0) |
3166 | return Qnil; | |
68c45bf0 | 3167 | emacs_close (desc); |
4018b5ef | 3168 | return Qt; |
fb4c6c96 | 3169 | #endif /* not DOS_NT and not macintosh */ |
570d7624 JB |
3170 | } |
3171 | ||
f793dc6c RS |
3172 | /* Having this before file-symlink-p mysteriously caused it to be forgotten |
3173 | on the RT/PC. */ | |
3174 | DEFUN ("file-writable-p", Ffile_writable_p, Sfile_writable_p, 1, 1, 0, | |
8c1a1077 PJ |
3175 | doc: /* Return t if file FILENAME can be written or created by you. */) |
3176 | (filename) | |
f793dc6c RS |
3177 | Lisp_Object filename; |
3178 | { | |
b1d1b865 | 3179 | Lisp_Object absname, dir, encoded; |
f793dc6c RS |
3180 | Lisp_Object handler; |
3181 | struct stat statbuf; | |
3182 | ||
b7826503 | 3183 | CHECK_STRING (filename); |
199607e4 | 3184 | absname = Fexpand_file_name (filename, Qnil); |
f793dc6c RS |
3185 | |
3186 | /* If the file name has special constructs in it, | |
3187 | call the corresponding file handler. */ | |
199607e4 | 3188 | handler = Ffind_file_name_handler (absname, Qfile_writable_p); |
f793dc6c | 3189 | if (!NILP (handler)) |
199607e4 | 3190 | return call2 (handler, Qfile_writable_p, absname); |
f793dc6c | 3191 | |
b1d1b865 | 3192 | encoded = ENCODE_FILE (absname); |
d5db4077 KR |
3193 | if (stat (SDATA (encoded), &statbuf) >= 0) |
3194 | return (check_writable (SDATA (encoded)) | |
f793dc6c | 3195 | ? Qt : Qnil); |
b1d1b865 | 3196 | |
199607e4 | 3197 | dir = Ffile_name_directory (absname); |
f793dc6c RS |
3198 | #ifdef VMS |
3199 | if (!NILP (dir)) | |
3200 | dir = Fdirectory_file_name (dir); | |
3201 | #endif /* VMS */ | |
3202 | #ifdef MSDOS | |
3203 | if (!NILP (dir)) | |
3204 | dir = Fdirectory_file_name (dir); | |
3205 | #endif /* MSDOS */ | |
b1d1b865 RS |
3206 | |
3207 | dir = ENCODE_FILE (dir); | |
e3e8a75a GM |
3208 | #ifdef WINDOWSNT |
3209 | /* The read-only attribute of the parent directory doesn't affect | |
3210 | whether a file or directory can be created within it. Some day we | |
3211 | should check ACLs though, which do affect this. */ | |
d5db4077 | 3212 | if (stat (SDATA (dir), &statbuf) < 0) |
e3e8a75a GM |
3213 | return Qnil; |
3214 | return (statbuf.st_mode & S_IFMT) == S_IFDIR ? Qt : Qnil; | |
3215 | #else | |
d5db4077 | 3216 | return (check_writable (!NILP (dir) ? (char *) SDATA (dir) : "") |
f793dc6c | 3217 | ? Qt : Qnil); |
e3e8a75a | 3218 | #endif |
f793dc6c RS |
3219 | } |
3220 | \f | |
1f8653eb | 3221 | DEFUN ("access-file", Faccess_file, Saccess_file, 2, 2, 0, |
8c1a1077 PJ |
3222 | doc: /* Access file FILENAME, and get an error if that does not work. |
3223 | The second argument STRING is used in the error message. | |
a4e03fe5 | 3224 | If there is no error, returns nil. */) |
8c1a1077 | 3225 | (filename, string) |
1f8653eb RS |
3226 | Lisp_Object filename, string; |
3227 | { | |
49475635 | 3228 | Lisp_Object handler, encoded_filename, absname; |
1f8653eb RS |
3229 | int fd; |
3230 | ||
b7826503 | 3231 | CHECK_STRING (filename); |
49475635 EZ |
3232 | absname = Fexpand_file_name (filename, Qnil); |
3233 | ||
b7826503 | 3234 | CHECK_STRING (string); |
1f8653eb RS |
3235 | |
3236 | /* If the file name has special constructs in it, | |
3237 | call the corresponding file handler. */ | |
49475635 | 3238 | handler = Ffind_file_name_handler (absname, Qaccess_file); |
1f8653eb | 3239 | if (!NILP (handler)) |
49475635 | 3240 | return call3 (handler, Qaccess_file, absname, string); |
1f8653eb | 3241 | |
49475635 | 3242 | encoded_filename = ENCODE_FILE (absname); |
b1d1b865 | 3243 | |
d5db4077 | 3244 | fd = emacs_open (SDATA (encoded_filename), O_RDONLY, 0); |
1f8653eb | 3245 | if (fd < 0) |
d5db4077 | 3246 | report_file_error (SDATA (string), Fcons (filename, Qnil)); |
68c45bf0 | 3247 | emacs_close (fd); |
1f8653eb RS |
3248 | |
3249 | return Qnil; | |
3250 | } | |
3251 | \f | |
570d7624 | 3252 | DEFUN ("file-symlink-p", Ffile_symlink_p, Sfile_symlink_p, 1, 1, 0, |
8c1a1077 | 3253 | doc: /* Return non-nil if file FILENAME is the name of a symbolic link. |
1c353c74 | 3254 | The value is the link target, as a string. |
68780e2a RS |
3255 | Otherwise it returns nil. |
3256 | ||
3257 | This function returns t when given the name of a symlink that | |
3258 | points to a nonexistent file. */) | |
8c1a1077 | 3259 | (filename) |
570d7624 JB |
3260 | Lisp_Object filename; |
3261 | { | |
32f4334d | 3262 | Lisp_Object handler; |
570d7624 | 3263 | |
b7826503 | 3264 | CHECK_STRING (filename); |
570d7624 JB |
3265 | filename = Fexpand_file_name (filename, Qnil); |
3266 | ||
32f4334d RS |
3267 | /* If the file name has special constructs in it, |
3268 | call the corresponding file handler. */ | |
49307295 | 3269 | handler = Ffind_file_name_handler (filename, Qfile_symlink_p); |
32f4334d RS |
3270 | if (!NILP (handler)) |
3271 | return call2 (handler, Qfile_symlink_p, filename); | |
3272 | ||
5adcec23 JR |
3273 | #ifdef S_IFLNK |
3274 | { | |
3275 | char *buf; | |
3276 | int bufsize; | |
3277 | int valsize; | |
3278 | Lisp_Object val; | |
3279 | ||
b1d1b865 RS |
3280 | filename = ENCODE_FILE (filename); |
3281 | ||
81c3310d GM |
3282 | bufsize = 50; |
3283 | buf = NULL; | |
3284 | do | |
570d7624 | 3285 | { |
81c3310d GM |
3286 | bufsize *= 2; |
3287 | buf = (char *) xrealloc (buf, bufsize); | |
570d7624 | 3288 | bzero (buf, bufsize); |
efdc16c9 | 3289 | |
81c3310d | 3290 | errno = 0; |
d5db4077 | 3291 | valsize = readlink (SDATA (filename), buf, bufsize); |
bcdd93b3 GM |
3292 | if (valsize == -1) |
3293 | { | |
81c3310d GM |
3294 | #ifdef ERANGE |
3295 | /* HP-UX reports ERANGE if buffer is too small. */ | |
bcdd93b3 GM |
3296 | if (errno == ERANGE) |
3297 | valsize = bufsize; | |
3298 | else | |
81c3310d | 3299 | #endif |
bcdd93b3 GM |
3300 | { |
3301 | xfree (buf); | |
3302 | return Qnil; | |
3303 | } | |
81c3310d | 3304 | } |
570d7624 | 3305 | } |
81c3310d | 3306 | while (valsize >= bufsize); |
efdc16c9 | 3307 | |
570d7624 | 3308 | val = make_string (buf, valsize); |
69ac1891 GM |
3309 | if (buf[0] == '/' && index (buf, ':')) |
3310 | val = concat2 (build_string ("/:"), val); | |
9ac0d9e0 | 3311 | xfree (buf); |
cd913586 KH |
3312 | val = DECODE_FILE (val); |
3313 | return val; | |
5adcec23 | 3314 | } |
570d7624 JB |
3315 | #else /* not S_IFLNK */ |
3316 | return Qnil; | |
3317 | #endif /* not S_IFLNK */ | |
3318 | } | |
3319 | ||
570d7624 | 3320 | DEFUN ("file-directory-p", Ffile_directory_p, Sfile_directory_p, 1, 1, 0, |
8c1a1077 PJ |
3321 | doc: /* Return t if FILENAME names an existing directory. |
3322 | Symbolic links to directories count as directories. | |
3323 | See `file-symlink-p' to distinguish symlinks. */) | |
3324 | (filename) | |
570d7624 JB |
3325 | Lisp_Object filename; |
3326 | { | |
199607e4 | 3327 | register Lisp_Object absname; |
570d7624 | 3328 | struct stat st; |
32f4334d | 3329 | Lisp_Object handler; |
570d7624 | 3330 | |
199607e4 | 3331 | absname = expand_and_dir_to_file (filename, current_buffer->directory); |
570d7624 | 3332 | |
32f4334d RS |
3333 | /* If the file name has special constructs in it, |
3334 | call the corresponding file handler. */ | |
199607e4 | 3335 | handler = Ffind_file_name_handler (absname, Qfile_directory_p); |
32f4334d | 3336 | if (!NILP (handler)) |
199607e4 | 3337 | return call2 (handler, Qfile_directory_p, absname); |
32f4334d | 3338 | |
b1d1b865 RS |
3339 | absname = ENCODE_FILE (absname); |
3340 | ||
d5db4077 | 3341 | if (stat (SDATA (absname), &st) < 0) |
570d7624 JB |
3342 | return Qnil; |
3343 | return (st.st_mode & S_IFMT) == S_IFDIR ? Qt : Qnil; | |
3344 | } | |
3345 | ||
b72dea2a | 3346 | DEFUN ("file-accessible-directory-p", Ffile_accessible_directory_p, Sfile_accessible_directory_p, 1, 1, 0, |
e385ec41 RS |
3347 | doc: /* Return t if file FILENAME names a directory you can open. |
3348 | For the value to be t, FILENAME must specify the name of a directory as a file, | |
3349 | and the directory must allow you to open files in it. In order to use a | |
8c1a1077 PJ |
3350 | directory as a buffer's current directory, this predicate must return true. |
3351 | A directory name spec may be given instead; then the value is t | |
3352 | if the directory so specified exists and really is a readable and | |
3353 | searchable directory. */) | |
3354 | (filename) | |
b72dea2a JB |
3355 | Lisp_Object filename; |
3356 | { | |
32f4334d | 3357 | Lisp_Object handler; |
1a04498e | 3358 | int tem; |
d26859eb | 3359 | struct gcpro gcpro1; |
32f4334d RS |
3360 | |
3361 | /* If the file name has special constructs in it, | |
3362 | call the corresponding file handler. */ | |
49307295 | 3363 | handler = Ffind_file_name_handler (filename, Qfile_accessible_directory_p); |
32f4334d RS |
3364 | if (!NILP (handler)) |
3365 | return call2 (handler, Qfile_accessible_directory_p, filename); | |
3366 | ||
d26859eb | 3367 | GCPRO1 (filename); |
1a04498e KH |
3368 | tem = (NILP (Ffile_directory_p (filename)) |
3369 | || NILP (Ffile_executable_p (filename))); | |
d26859eb | 3370 | UNGCPRO; |
1a04498e | 3371 | return tem ? Qnil : Qt; |
b72dea2a JB |
3372 | } |
3373 | ||
f793dc6c | 3374 | DEFUN ("file-regular-p", Ffile_regular_p, Sfile_regular_p, 1, 1, 0, |
8c1a1077 PJ |
3375 | doc: /* Return t if file FILENAME is the name of a regular file. |
3376 | This is the sort of file that holds an ordinary stream of data bytes. */) | |
3377 | (filename) | |
f793dc6c RS |
3378 | Lisp_Object filename; |
3379 | { | |
199607e4 | 3380 | register Lisp_Object absname; |
f793dc6c RS |
3381 | struct stat st; |
3382 | Lisp_Object handler; | |
3383 | ||
199607e4 | 3384 | absname = expand_and_dir_to_file (filename, current_buffer->directory); |
f793dc6c RS |
3385 | |
3386 | /* If the file name has special constructs in it, | |
3387 | call the corresponding file handler. */ | |
199607e4 | 3388 | handler = Ffind_file_name_handler (absname, Qfile_regular_p); |
f793dc6c | 3389 | if (!NILP (handler)) |
199607e4 | 3390 | return call2 (handler, Qfile_regular_p, absname); |
f793dc6c | 3391 | |
b1d1b865 RS |
3392 | absname = ENCODE_FILE (absname); |
3393 | ||
c1c4693e RS |
3394 | #ifdef WINDOWSNT |
3395 | { | |
3396 | int result; | |
3397 | Lisp_Object tem = Vw32_get_true_file_attributes; | |
3398 | ||
3399 | /* Tell stat to use expensive method to get accurate info. */ | |
3400 | Vw32_get_true_file_attributes = Qt; | |
d5db4077 | 3401 | result = stat (SDATA (absname), &st); |
c1c4693e RS |
3402 | Vw32_get_true_file_attributes = tem; |
3403 | ||
3404 | if (result < 0) | |
3405 | return Qnil; | |
3406 | return (st.st_mode & S_IFMT) == S_IFREG ? Qt : Qnil; | |
3407 | } | |
3408 | #else | |
d5db4077 | 3409 | if (stat (SDATA (absname), &st) < 0) |
f793dc6c RS |
3410 | return Qnil; |
3411 | return (st.st_mode & S_IFMT) == S_IFREG ? Qt : Qnil; | |
c1c4693e | 3412 | #endif |
f793dc6c RS |
3413 | } |
3414 | \f | |
570d7624 | 3415 | DEFUN ("file-modes", Ffile_modes, Sfile_modes, 1, 1, 0, |
d4a42098 KS |
3416 | doc: /* Return mode bits of file named FILENAME, as an integer. |
3417 | Return nil, if file does not exist or is not accessible. */) | |
8c1a1077 | 3418 | (filename) |
570d7624 JB |
3419 | Lisp_Object filename; |
3420 | { | |
199607e4 | 3421 | Lisp_Object absname; |
570d7624 | 3422 | struct stat st; |
32f4334d | 3423 | Lisp_Object handler; |
570d7624 | 3424 | |
199607e4 | 3425 | absname = expand_and_dir_to_file (filename, current_buffer->directory); |
570d7624 | 3426 | |
32f4334d RS |
3427 | /* If the file name has special constructs in it, |
3428 | call the corresponding file handler. */ | |
199607e4 | 3429 | handler = Ffind_file_name_handler (absname, Qfile_modes); |
32f4334d | 3430 | if (!NILP (handler)) |
199607e4 | 3431 | return call2 (handler, Qfile_modes, absname); |
32f4334d | 3432 | |
b1d1b865 RS |
3433 | absname = ENCODE_FILE (absname); |
3434 | ||
d5db4077 | 3435 | if (stat (SDATA (absname), &st) < 0) |
570d7624 | 3436 | return Qnil; |
34ead71a | 3437 | #if defined (MSDOS) && __DJGPP__ < 2 |
d5db4077 | 3438 | if (check_executable (SDATA (absname))) |
3be3c08e | 3439 | st.st_mode |= S_IEXEC; |
34ead71a | 3440 | #endif /* MSDOS && __DJGPP__ < 2 */ |
3ace87e3 | 3441 | |
570d7624 JB |
3442 | return make_number (st.st_mode & 07777); |
3443 | } | |
3444 | ||
3445 | DEFUN ("set-file-modes", Fset_file_modes, Sset_file_modes, 2, 2, 0, | |
8c1a1077 PJ |
3446 | doc: /* Set mode bits of file named FILENAME to MODE (an integer). |
3447 | Only the 12 low bits of MODE are used. */) | |
570d7624 JB |
3448 | (filename, mode) |
3449 | Lisp_Object filename, mode; | |
3450 | { | |
b1d1b865 | 3451 | Lisp_Object absname, encoded_absname; |
32f4334d | 3452 | Lisp_Object handler; |
570d7624 | 3453 | |
199607e4 | 3454 | absname = Fexpand_file_name (filename, current_buffer->directory); |
b7826503 | 3455 | CHECK_NUMBER (mode); |
570d7624 | 3456 | |
32f4334d RS |
3457 | /* If the file name has special constructs in it, |
3458 | call the corresponding file handler. */ | |
199607e4 | 3459 | handler = Ffind_file_name_handler (absname, Qset_file_modes); |
32f4334d | 3460 | if (!NILP (handler)) |
199607e4 | 3461 | return call3 (handler, Qset_file_modes, absname, mode); |
32f4334d | 3462 | |
b1d1b865 RS |
3463 | encoded_absname = ENCODE_FILE (absname); |
3464 | ||
d5db4077 | 3465 | if (chmod (SDATA (encoded_absname), XINT (mode)) < 0) |
199607e4 | 3466 | report_file_error ("Doing chmod", Fcons (absname, Qnil)); |
570d7624 JB |
3467 | |
3468 | return Qnil; | |
3469 | } | |
3470 | ||
c24e9a53 | 3471 | DEFUN ("set-default-file-modes", Fset_default_file_modes, Sset_default_file_modes, 1, 1, 0, |
8c1a1077 PJ |
3472 | doc: /* Set the file permission bits for newly created files. |
3473 | The argument MODE should be an integer; only the low 9 bits are used. | |
3474 | This setting is inherited by subprocesses. */) | |
3475 | (mode) | |
5f85ea58 | 3476 | Lisp_Object mode; |
36a8c287 | 3477 | { |
b7826503 | 3478 | CHECK_NUMBER (mode); |
199607e4 | 3479 | |
5f85ea58 | 3480 | umask ((~ XINT (mode)) & 0777); |
36a8c287 JB |
3481 | |
3482 | return Qnil; | |
3483 | } | |
3484 | ||
c24e9a53 | 3485 | DEFUN ("default-file-modes", Fdefault_file_modes, Sdefault_file_modes, 0, 0, 0, |
8c1a1077 PJ |
3486 | doc: /* Return the default file protection for created files. |
3487 | The value is an integer. */) | |
3488 | () | |
36a8c287 | 3489 | { |
5f85ea58 RS |
3490 | int realmask; |
3491 | Lisp_Object value; | |
36a8c287 | 3492 | |
5f85ea58 RS |
3493 | realmask = umask (0); |
3494 | umask (realmask); | |
36a8c287 | 3495 | |
46283abe | 3496 | XSETINT (value, (~ realmask) & 0777); |
5f85ea58 | 3497 | return value; |
36a8c287 | 3498 | } |
819da85b EZ |
3499 | \f |
3500 | extern int lisp_time_argument P_ ((Lisp_Object, time_t *, int *)); | |
3501 | ||
3502 | DEFUN ("set-file-times", Fset_file_times, Sset_file_times, 1, 2, 0, | |
3503 | doc: /* Set times of file FILENAME to TIME. | |
3504 | Set both access and modification times. | |
3505 | Return t on success, else nil. | |
3506 | Use the current time if TIME is nil. TIME is in the format of | |
3507 | `current-time'. */) | |
3508 | (filename, time) | |
3509 | Lisp_Object filename, time; | |
3510 | { | |
3511 | Lisp_Object absname, encoded_absname; | |
3512 | Lisp_Object handler; | |
3513 | time_t sec; | |
3514 | int usec; | |
3515 | ||
3516 | if (! lisp_time_argument (time, &sec, &usec)) | |
3517 | error ("Invalid time specification"); | |
3518 | ||
3519 | absname = Fexpand_file_name (filename, current_buffer->directory); | |
3520 | ||
3521 | /* If the file name has special constructs in it, | |
3522 | call the corresponding file handler. */ | |
3523 | handler = Ffind_file_name_handler (absname, Qset_file_times); | |
3524 | if (!NILP (handler)) | |
3525 | return call3 (handler, Qset_file_times, absname, time); | |
3526 | ||
3527 | encoded_absname = ENCODE_FILE (absname); | |
5df5e07c | 3528 | |
819da85b EZ |
3529 | { |
3530 | EMACS_TIME t; | |
3531 | ||
3532 | EMACS_SET_SECS (t, sec); | |
3533 | EMACS_SET_USECS (t, usec); | |
3534 | ||
3535 | if (set_file_times (SDATA (encoded_absname), t, t)) | |
3536 | { | |
3537 | #ifdef DOS_NT | |
3538 | struct stat st; | |
3539 | ||
3540 | /* Setting times on a directory always fails. */ | |
3541 | if (stat (SDATA (encoded_absname), &st) == 0 | |
3542 | && (st.st_mode & S_IFMT) == S_IFDIR) | |
3543 | return Qnil; | |
3544 | #endif | |
3545 | report_file_error ("Setting file times", Fcons (absname, Qnil)); | |
3546 | return Qnil; | |
3547 | } | |
3548 | } | |
3549 | ||
3550 | return Qt; | |
3551 | } | |
f793dc6c | 3552 | \f |
5df5e07c GM |
3553 | #ifdef __NetBSD__ |
3554 | #define unix 42 | |
3555 | #endif | |
85ffea93 | 3556 | |
5df5e07c | 3557 | #ifdef unix |
85ffea93 | 3558 | DEFUN ("unix-sync", Funix_sync, Sunix_sync, 0, 0, "", |
8c1a1077 PJ |
3559 | doc: /* Tell Unix to finish all pending disk updates. */) |
3560 | () | |
85ffea93 RS |
3561 | { |
3562 | sync (); | |
3563 | return Qnil; | |
3564 | } | |
3565 | ||
3566 | #endif /* unix */ | |
3567 | ||
570d7624 | 3568 | DEFUN ("file-newer-than-file-p", Ffile_newer_than_file_p, Sfile_newer_than_file_p, 2, 2, 0, |
8c1a1077 PJ |
3569 | doc: /* Return t if file FILE1 is newer than file FILE2. |
3570 | If FILE1 does not exist, the answer is nil; | |
3571 | otherwise, if FILE2 does not exist, the answer is t. */) | |
3572 | (file1, file2) | |
570d7624 JB |
3573 | Lisp_Object file1, file2; |
3574 | { | |
199607e4 | 3575 | Lisp_Object absname1, absname2; |
570d7624 JB |
3576 | struct stat st; |
3577 | int mtime1; | |
32f4334d | 3578 | Lisp_Object handler; |
09121adc | 3579 | struct gcpro gcpro1, gcpro2; |
570d7624 | 3580 | |
b7826503 PJ |
3581 | CHECK_STRING (file1); |
3582 | CHECK_STRING (file2); | |
570d7624 | 3583 | |
199607e4 RS |
3584 | absname1 = Qnil; |
3585 | GCPRO2 (absname1, file2); | |
3586 | absname1 = expand_and_dir_to_file (file1, current_buffer->directory); | |
3587 | absname2 = expand_and_dir_to_file (file2, current_buffer->directory); | |
09121adc | 3588 | UNGCPRO; |
570d7624 | 3589 | |
32f4334d RS |
3590 | /* If the file name has special constructs in it, |
3591 | call the corresponding file handler. */ | |
199607e4 | 3592 | handler = Ffind_file_name_handler (absname1, Qfile_newer_than_file_p); |
51cf6d37 | 3593 | if (NILP (handler)) |
199607e4 | 3594 | handler = Ffind_file_name_handler (absname2, Qfile_newer_than_file_p); |
32f4334d | 3595 | if (!NILP (handler)) |
199607e4 | 3596 | return call3 (handler, Qfile_newer_than_file_p, absname1, absname2); |
32f4334d | 3597 | |
b1d1b865 RS |
3598 | GCPRO2 (absname1, absname2); |
3599 | absname1 = ENCODE_FILE (absname1); | |
3600 | absname2 = ENCODE_FILE (absname2); | |
3601 | UNGCPRO; | |
3602 | ||
d5db4077 | 3603 | if (stat (SDATA (absname1), &st) < 0) |
570d7624 JB |
3604 | return Qnil; |
3605 | ||
3606 | mtime1 = st.st_mtime; | |
3607 | ||
d5db4077 | 3608 | if (stat (SDATA (absname2), &st) < 0) |
570d7624 JB |
3609 | return Qt; |
3610 | ||
3611 | return (mtime1 > st.st_mtime) ? Qt : Qnil; | |
3612 | } | |
3613 | \f | |
5e570b75 | 3614 | #ifdef DOS_NT |
4c3c22f3 | 3615 | Lisp_Object Qfind_buffer_file_type; |
5e570b75 | 3616 | #endif /* DOS_NT */ |
4c3c22f3 | 3617 | |
6fdaa9a0 KH |
3618 | #ifndef READ_BUF_SIZE |
3619 | #define READ_BUF_SIZE (64 << 10) | |
3620 | #endif | |
3621 | ||
98a7d268 KH |
3622 | extern void adjust_markers_for_delete P_ ((int, int, int, int)); |
3623 | ||
3624 | /* This function is called after Lisp functions to decide a coding | |
3625 | system are called, or when they cause an error. Before they are | |
3626 | called, the current buffer is set unibyte and it contains only a | |
3627 | newly inserted text (thus the buffer was empty before the | |
3628 | insertion). | |
3629 | ||
3630 | The functions may set markers, overlays, text properties, or even | |
3631 | alter the buffer contents, change the current buffer. | |
3632 | ||
3633 | Here, we reset all those changes by: | |
3634 | o set back the current buffer. | |
3635 | o move all markers and overlays to BEG. | |
3636 | o remove all text properties. | |
3637 | o set back the buffer multibyteness. */ | |
f736ffbf KH |
3638 | |
3639 | static Lisp_Object | |
98a7d268 KH |
3640 | decide_coding_unwind (unwind_data) |
3641 | Lisp_Object unwind_data; | |
f736ffbf | 3642 | { |
98a7d268 | 3643 | Lisp_Object multibyte, undo_list, buffer; |
f736ffbf | 3644 | |
98a7d268 KH |
3645 | multibyte = XCAR (unwind_data); |
3646 | unwind_data = XCDR (unwind_data); | |
3647 | undo_list = XCAR (unwind_data); | |
3648 | buffer = XCDR (unwind_data); | |
3649 | ||
3650 | if (current_buffer != XBUFFER (buffer)) | |
3651 | set_buffer_internal (XBUFFER (buffer)); | |
3652 | adjust_markers_for_delete (BEG, BEG_BYTE, Z, Z_BYTE); | |
3653 | adjust_overlays_for_delete (BEG, Z - BEG); | |
3654 | BUF_INTERVALS (current_buffer) = 0; | |
3655 | TEMP_SET_PT_BOTH (BEG, BEG_BYTE); | |
3656 | ||
3657 | /* Now we are safe to change the buffer's multibyteness directly. */ | |
3658 | current_buffer->enable_multibyte_characters = multibyte; | |
3659 | current_buffer->undo_list = undo_list; | |
f736ffbf KH |
3660 | |
3661 | return Qnil; | |
3662 | } | |
3663 | ||
55587f8a | 3664 | |
1b978129 | 3665 | /* Used to pass values from insert-file-contents to read_non_regular. */ |
55587f8a | 3666 | |
1b978129 GM |
3667 | static int non_regular_fd; |
3668 | static int non_regular_inserted; | |
3669 | static int non_regular_nbytes; | |
55587f8a | 3670 | |
55587f8a | 3671 | |
1b978129 GM |
3672 | /* Read from a non-regular file. |
3673 | Read non_regular_trytry bytes max from non_regular_fd. | |
3674 | Non_regular_inserted specifies where to put the read bytes. | |
3675 | Value is the number of bytes read. */ | |
55587f8a GM |
3676 | |
3677 | static Lisp_Object | |
1b978129 | 3678 | read_non_regular () |
55587f8a | 3679 | { |
1b978129 | 3680 | int nbytes; |
efdc16c9 | 3681 | |
1b978129 GM |
3682 | immediate_quit = 1; |
3683 | QUIT; | |
3684 | nbytes = emacs_read (non_regular_fd, | |
28c3eb5a | 3685 | BEG_ADDR + PT_BYTE - BEG_BYTE + non_regular_inserted, |
1b978129 | 3686 | non_regular_nbytes); |
1b978129 GM |
3687 | immediate_quit = 0; |
3688 | return make_number (nbytes); | |
3689 | } | |
55587f8a | 3690 | |
d0e2444e | 3691 | |
1b978129 GM |
3692 | /* Condition-case handler used when reading from non-regular files |
3693 | in insert-file-contents. */ | |
3694 | ||
3695 | static Lisp_Object | |
3696 | read_non_regular_quit () | |
3697 | { | |
55587f8a GM |
3698 | return Qnil; |
3699 | } | |
3700 | ||
3701 | ||
570d7624 | 3702 | DEFUN ("insert-file-contents", Finsert_file_contents, Sinsert_file_contents, |
8c1a1077 PJ |
3703 | 1, 5, 0, |
3704 | doc: /* Insert contents of file FILENAME after point. | |
cf6d2357 | 3705 | Returns list of absolute file name and number of characters inserted. |
8c1a1077 PJ |
3706 | If second argument VISIT is non-nil, the buffer's visited filename |
3707 | and last save file modtime are set, and it is marked unmodified. | |
3708 | If visiting and the file does not exist, visiting is completed | |
3709 | before the error is signaled. | |
3710 | The optional third and fourth arguments BEG and END | |
3711 | specify what portion of the file to insert. | |
3712 | These arguments count bytes in the file, not characters in the buffer. | |
3713 | If VISIT is non-nil, BEG and END must be nil. | |
3714 | ||
3715 | If optional fifth argument REPLACE is non-nil, | |
3716 | it means replace the current buffer contents (in the accessible portion) | |
3717 | with the file contents. This is better than simply deleting and inserting | |
3718 | the whole thing because (1) it preserves some marker positions | |
3719 | and (2) it puts less data in the undo list. | |
3720 | When REPLACE is non-nil, the value is the number of characters actually read, | |
3721 | which is often less than the number of characters to be read. | |
3722 | ||
3723 | This does code conversion according to the value of | |
3724 | `coding-system-for-read' or `file-coding-system-alist', | |
3725 | and sets the variable `last-coding-system-used' to the coding system | |
3726 | actually used. */) | |
3727 | (filename, visit, beg, end, replace) | |
3d0387c0 | 3728 | Lisp_Object filename, visit, beg, end, replace; |
570d7624 JB |
3729 | { |
3730 | struct stat st; | |
3731 | register int fd; | |
ec7adf26 | 3732 | int inserted = 0; |
570d7624 | 3733 | register int how_much; |
6fdaa9a0 | 3734 | register int unprocessed; |
331379bf | 3735 | int count = SPECPDL_INDEX (); |
b1d1b865 RS |
3736 | struct gcpro gcpro1, gcpro2, gcpro3, gcpro4; |
3737 | Lisp_Object handler, val, insval, orig_filename; | |
d6a3cc15 | 3738 | Lisp_Object p; |
6bbd7a29 | 3739 | int total = 0; |
53c34c46 | 3740 | int not_regular = 0; |
feb9dc27 | 3741 | unsigned char read_buf[READ_BUF_SIZE]; |
6fdaa9a0 | 3742 | struct coding_system coding; |
3dbcf3f6 | 3743 | unsigned char buffer[1 << 14]; |
727a0b4a | 3744 | int replace_handled = 0; |
ec7adf26 | 3745 | int set_coding_system = 0; |
f736ffbf | 3746 | int coding_system_decided = 0; |
1b978129 | 3747 | int read_quit = 0; |
68780e2a RS |
3748 | int old_Vdeactivate_mark = Vdeactivate_mark; |
3749 | int we_locked_file = 0; | |
32f4334d | 3750 | |
95385625 RS |
3751 | if (current_buffer->base_buffer && ! NILP (visit)) |
3752 | error ("Cannot do file visiting in an indirect buffer"); | |
3753 | ||
3754 | if (!NILP (current_buffer->read_only)) | |
3755 | Fbarf_if_buffer_read_only (); | |
3756 | ||
32f4334d | 3757 | val = Qnil; |
d6a3cc15 | 3758 | p = Qnil; |
b1d1b865 | 3759 | orig_filename = Qnil; |
32f4334d | 3760 | |
b1d1b865 | 3761 | GCPRO4 (filename, val, p, orig_filename); |
570d7624 | 3762 | |
b7826503 | 3763 | CHECK_STRING (filename); |
570d7624 JB |
3764 | filename = Fexpand_file_name (filename, Qnil); |
3765 | ||
32f4334d RS |
3766 | /* If the file name has special constructs in it, |
3767 | call the corresponding file handler. */ | |
49307295 | 3768 | handler = Ffind_file_name_handler (filename, Qinsert_file_contents); |
32f4334d RS |
3769 | if (!NILP (handler)) |
3770 | { | |
3d0387c0 RS |
3771 | val = call6 (handler, Qinsert_file_contents, filename, |
3772 | visit, beg, end, replace); | |
03699b14 KR |
3773 | if (CONSP (val) && CONSP (XCDR (val))) |
3774 | inserted = XINT (XCAR (XCDR (val))); | |
32f4334d RS |
3775 | goto handled; |
3776 | } | |
3777 | ||
b1d1b865 RS |
3778 | orig_filename = filename; |
3779 | filename = ENCODE_FILE (filename); | |
3780 | ||
570d7624 JB |
3781 | fd = -1; |
3782 | ||
c1c4693e RS |
3783 | #ifdef WINDOWSNT |
3784 | { | |
3785 | Lisp_Object tem = Vw32_get_true_file_attributes; | |
3786 | ||
3787 | /* Tell stat to use expensive method to get accurate info. */ | |
3788 | Vw32_get_true_file_attributes = Qt; | |
d5db4077 | 3789 | total = stat (SDATA (filename), &st); |
c1c4693e RS |
3790 | Vw32_get_true_file_attributes = tem; |
3791 | } | |
3792 | if (total < 0) | |
3793 | #else | |
570d7624 | 3794 | #ifndef APOLLO |
d5db4077 | 3795 | if (stat (SDATA (filename), &st) < 0) |
570d7624 | 3796 | #else |
d5db4077 | 3797 | if ((fd = emacs_open (SDATA (filename), O_RDONLY, 0)) < 0 |
570d7624 JB |
3798 | || fstat (fd, &st) < 0) |
3799 | #endif /* not APOLLO */ | |
c1c4693e | 3800 | #endif /* WINDOWSNT */ |
570d7624 | 3801 | { |
68c45bf0 | 3802 | if (fd >= 0) emacs_close (fd); |
99bc28f4 | 3803 | badopen: |
265a9e55 | 3804 | if (NILP (visit)) |
b1d1b865 | 3805 | report_file_error ("Opening input file", Fcons (orig_filename, Qnil)); |
570d7624 JB |
3806 | st.st_mtime = -1; |
3807 | how_much = 0; | |
0de6b8f4 | 3808 | if (!NILP (Vcoding_system_for_read)) |
22d92d6b | 3809 | Fset (Qbuffer_file_coding_system, Vcoding_system_for_read); |
570d7624 JB |
3810 | goto notfound; |
3811 | } | |
3812 | ||
99bc28f4 | 3813 | #ifdef S_IFREG |
be53b411 JB |
3814 | /* This code will need to be changed in order to work on named |
3815 | pipes, and it's probably just not worth it. So we should at | |
3816 | least signal an error. */ | |
99bc28f4 | 3817 | if (!S_ISREG (st.st_mode)) |
330bfe57 | 3818 | { |
d4b8687b RS |
3819 | not_regular = 1; |
3820 | ||
3821 | if (! NILP (visit)) | |
3822 | goto notfound; | |
3823 | ||
3824 | if (! NILP (replace) || ! NILP (beg) || ! NILP (end)) | |
330bfe57 RS |
3825 | Fsignal (Qfile_error, |
3826 | Fcons (build_string ("not a regular file"), | |
b1d1b865 | 3827 | Fcons (orig_filename, Qnil))); |
330bfe57 | 3828 | } |
be53b411 JB |
3829 | #endif |
3830 | ||
99bc28f4 | 3831 | if (fd < 0) |
d5db4077 | 3832 | if ((fd = emacs_open (SDATA (filename), O_RDONLY, 0)) < 0) |
99bc28f4 KH |
3833 | goto badopen; |
3834 | ||
3835 | /* Replacement should preserve point as it preserves markers. */ | |
3836 | if (!NILP (replace)) | |
3837 | record_unwind_protect (restore_point_unwind, Fpoint_marker ()); | |
3838 | ||
3839 | record_unwind_protect (close_file_unwind, make_number (fd)); | |
3840 | ||
570d7624 | 3841 | /* Supposedly happens on VMS. */ |
11d300db JR |
3842 | /* Can happen on any platform that uses long as type of off_t, but allows |
3843 | file sizes to exceed 2Gb. VMS is no longer officially supported, so | |
3844 | give a message suitable for the latter case. */ | |
d4b8687b | 3845 | if (! not_regular && st.st_size < 0) |
11d300db | 3846 | error ("Maximum buffer size exceeded"); |
be53b411 | 3847 | |
9c856db9 GM |
3848 | /* Prevent redisplay optimizations. */ |
3849 | current_buffer->clip_changed = 1; | |
3850 | ||
9f57b6b4 KH |
3851 | if (!NILP (visit)) |
3852 | { | |
3853 | if (!NILP (beg) || !NILP (end)) | |
3854 | error ("Attempt to visit less than an entire file"); | |
3855 | if (BEG < Z && NILP (replace)) | |
3856 | error ("Cannot do file visiting in a non-empty buffer"); | |
3857 | } | |
7fded690 JB |
3858 | |
3859 | if (!NILP (beg)) | |
b7826503 | 3860 | CHECK_NUMBER (beg); |
7fded690 | 3861 | else |
2acfd7ae | 3862 | XSETFASTINT (beg, 0); |
7fded690 JB |
3863 | |
3864 | if (!NILP (end)) | |
b7826503 | 3865 | CHECK_NUMBER (end); |
7fded690 JB |
3866 | else |
3867 | { | |
d4b8687b RS |
3868 | if (! not_regular) |
3869 | { | |
3870 | XSETINT (end, st.st_size); | |
68c45bf0 PE |
3871 | |
3872 | /* Arithmetic overflow can occur if an Emacs integer cannot | |
3873 | represent the file size, or if the calculations below | |
3874 | overflow. The calculations below double the file size | |
3875 | twice, so check that it can be multiplied by 4 safely. */ | |
3876 | if (XINT (end) != st.st_size | |
3877 | || ((int) st.st_size * 4) / 4 != st.st_size) | |
d4b8687b | 3878 | error ("Maximum buffer size exceeded"); |
d21dd12d GM |
3879 | |
3880 | /* The file size returned from stat may be zero, but data | |
3881 | may be readable nonetheless, for example when this is a | |
3882 | file in the /proc filesystem. */ | |
3883 | if (st.st_size == 0) | |
3884 | XSETINT (end, READ_BUF_SIZE); | |
d4b8687b | 3885 | } |
7fded690 JB |
3886 | } |
3887 | ||
356a6224 KH |
3888 | if (EQ (Vcoding_system_for_read, Qauto_save_coding)) |
3889 | { | |
3890 | /* We use emacs-mule for auto saving... */ | |
3891 | setup_coding_system (Qemacs_mule, &coding); | |
3892 | /* ... but with the special flag to indicate to read in a | |
3893 | multibyte sequence for eight-bit-control char as is. */ | |
3894 | coding.flags = 1; | |
3895 | coding.src_multibyte = 0; | |
3896 | coding.dst_multibyte | |
3897 | = !NILP (current_buffer->enable_multibyte_characters); | |
3898 | coding.eol_type = CODING_EOL_LF; | |
3899 | coding_system_decided = 1; | |
3900 | } | |
3901 | else if (BEG < Z) | |
f736ffbf KH |
3902 | { |
3903 | /* Decide the coding system to use for reading the file now | |
3904 | because we can't use an optimized method for handling | |
3905 | `coding:' tag if the current buffer is not empty. */ | |
3906 | Lisp_Object val; | |
3907 | val = Qnil; | |
feb9dc27 | 3908 | |
f736ffbf KH |
3909 | if (!NILP (Vcoding_system_for_read)) |
3910 | val = Vcoding_system_for_read; | |
f736ffbf KH |
3911 | else |
3912 | { | |
3913 | /* Don't try looking inside a file for a coding system | |
3914 | specification if it is not seekable. */ | |
3915 | if (! not_regular && ! NILP (Vset_auto_coding_function)) | |
3916 | { | |
3917 | /* Find a coding system specified in the heading two | |
3918 | lines or in the tailing several lines of the file. | |
3919 | We assume that the 1K-byte and 3K-byte for heading | |
003a7eaa | 3920 | and tailing respectively are sufficient for this |
f736ffbf | 3921 | purpose. */ |
07590973 | 3922 | int nread; |
f736ffbf KH |
3923 | |
3924 | if (st.st_size <= (1024 * 4)) | |
68c45bf0 | 3925 | nread = emacs_read (fd, read_buf, 1024 * 4); |
f736ffbf KH |
3926 | else |
3927 | { | |
68c45bf0 | 3928 | nread = emacs_read (fd, read_buf, 1024); |
f736ffbf KH |
3929 | if (nread >= 0) |
3930 | { | |
3931 | if (lseek (fd, st.st_size - (1024 * 3), 0) < 0) | |
3932 | report_file_error ("Setting file position", | |
3933 | Fcons (orig_filename, Qnil)); | |
68c45bf0 | 3934 | nread += emacs_read (fd, read_buf + nread, 1024 * 3); |
f736ffbf KH |
3935 | } |
3936 | } | |
feb9dc27 | 3937 | |
f736ffbf KH |
3938 | if (nread < 0) |
3939 | error ("IO error reading %s: %s", | |
d5db4077 | 3940 | SDATA (orig_filename), emacs_strerror (errno)); |
f736ffbf KH |
3941 | else if (nread > 0) |
3942 | { | |
f736ffbf | 3943 | struct buffer *prev = current_buffer; |
685fc579 RS |
3944 | Lisp_Object buffer; |
3945 | struct buffer *buf; | |
f736ffbf KH |
3946 | |
3947 | record_unwind_protect (Fset_buffer, Fcurrent_buffer ()); | |
1d92afcd | 3948 | |
685fc579 RS |
3949 | buffer = Fget_buffer_create (build_string (" *code-converting-work*")); |
3950 | buf = XBUFFER (buffer); | |
3951 | ||
29ea8ae9 | 3952 | delete_all_overlays (buf); |
685fc579 RS |
3953 | buf->directory = current_buffer->directory; |
3954 | buf->read_only = Qnil; | |
3955 | buf->filename = Qnil; | |
3956 | buf->undo_list = Qt; | |
29ea8ae9 SM |
3957 | eassert (buf->overlays_before == NULL); |
3958 | eassert (buf->overlays_after == NULL); | |
efdc16c9 | 3959 | |
685fc579 RS |
3960 | set_buffer_internal (buf); |
3961 | Ferase_buffer (); | |
3962 | buf->enable_multibyte_characters = Qnil; | |
3963 | ||
f736ffbf KH |
3964 | insert_1_both (read_buf, nread, nread, 0, 0, 0); |
3965 | TEMP_SET_PT_BOTH (BEG, BEG_BYTE); | |
1255deb9 KH |
3966 | val = call2 (Vset_auto_coding_function, |
3967 | filename, make_number (nread)); | |
f736ffbf | 3968 | set_buffer_internal (prev); |
efdc16c9 | 3969 | |
f736ffbf KH |
3970 | /* Discard the unwind protect for recovering the |
3971 | current buffer. */ | |
3972 | specpdl_ptr--; | |
3973 | ||
3974 | /* Rewind the file for the actual read done later. */ | |
3975 | if (lseek (fd, 0, 0) < 0) | |
3976 | report_file_error ("Setting file position", | |
3977 | Fcons (orig_filename, Qnil)); | |
3978 | } | |
3979 | } | |
feb9dc27 | 3980 | |
f736ffbf KH |
3981 | if (NILP (val)) |
3982 | { | |
3983 | /* If we have not yet decided a coding system, check | |
3984 | file-coding-system-alist. */ | |
3985 | Lisp_Object args[6], coding_systems; | |
3986 | ||
3987 | args[0] = Qinsert_file_contents, args[1] = orig_filename; | |
3988 | args[2] = visit, args[3] = beg, args[4] = end, args[5] = replace; | |
3989 | coding_systems = Ffind_operation_coding_system (6, args); | |
3990 | if (CONSP (coding_systems)) | |
03699b14 | 3991 | val = XCAR (coding_systems); |
f736ffbf KH |
3992 | } |
3993 | } | |
c9e82392 | 3994 | |
f736ffbf | 3995 | setup_coding_system (Fcheck_coding_system (val), &coding); |
f8569325 DL |
3996 | /* Ensure we set Vlast_coding_system_used. */ |
3997 | set_coding_system = 1; | |
c8a6d68a | 3998 | |
237a6fd2 RS |
3999 | if (NILP (current_buffer->enable_multibyte_characters) |
4000 | && ! NILP (val)) | |
4001 | /* We must suppress all character code conversion except for | |
4002 | end-of-line conversion. */ | |
57515cfe | 4003 | setup_raw_text_coding_system (&coding); |
54369368 | 4004 | |
8c3b9441 KH |
4005 | coding.src_multibyte = 0; |
4006 | coding.dst_multibyte | |
4007 | = !NILP (current_buffer->enable_multibyte_characters); | |
f736ffbf KH |
4008 | coding_system_decided = 1; |
4009 | } | |
6cf71bf1 | 4010 | |
3d0387c0 RS |
4011 | /* If requested, replace the accessible part of the buffer |
4012 | with the file contents. Avoid replacing text at the | |
4013 | beginning or end of the buffer that matches the file contents; | |
3dbcf3f6 RS |
4014 | that preserves markers pointing to the unchanged parts. |
4015 | ||
4016 | Here we implement this feature in an optimized way | |
4017 | for the case where code conversion is NOT needed. | |
4018 | The following if-statement handles the case of conversion | |
727a0b4a RS |
4019 | in a less optimal way. |
4020 | ||
4021 | If the code conversion is "automatic" then we try using this | |
4022 | method and hope for the best. | |
4023 | But if we discover the need for conversion, we give up on this method | |
4024 | and let the following if-statement handle the replace job. */ | |
3dbcf3f6 | 4025 | if (!NILP (replace) |
f736ffbf | 4026 | && BEGV < ZV |
8c3b9441 | 4027 | && !(coding.common_flags & CODING_REQUIRE_DECODING_MASK)) |
3d0387c0 | 4028 | { |
ec7adf26 RS |
4029 | /* same_at_start and same_at_end count bytes, |
4030 | because file access counts bytes | |
4031 | and BEG and END count bytes. */ | |
4032 | int same_at_start = BEGV_BYTE; | |
4033 | int same_at_end = ZV_BYTE; | |
9c28748f | 4034 | int overlap; |
6fdaa9a0 KH |
4035 | /* There is still a possibility we will find the need to do code |
4036 | conversion. If that happens, we set this variable to 1 to | |
727a0b4a | 4037 | give up on handling REPLACE in the optimized way. */ |
6fdaa9a0 | 4038 | int giveup_match_end = 0; |
9c28748f | 4039 | |
4d2a0879 RS |
4040 | if (XINT (beg) != 0) |
4041 | { | |
4042 | if (lseek (fd, XINT (beg), 0) < 0) | |
4043 | report_file_error ("Setting file position", | |
b1d1b865 | 4044 | Fcons (orig_filename, Qnil)); |
4d2a0879 RS |
4045 | } |
4046 | ||
3d0387c0 RS |
4047 | immediate_quit = 1; |
4048 | QUIT; | |
4049 | /* Count how many chars at the start of the file | |
4050 | match the text at the beginning of the buffer. */ | |
4051 | while (1) | |
4052 | { | |
4053 | int nread, bufpos; | |
4054 | ||
68c45bf0 | 4055 | nread = emacs_read (fd, buffer, sizeof buffer); |
3d0387c0 RS |
4056 | if (nread < 0) |
4057 | error ("IO error reading %s: %s", | |
d5db4077 | 4058 | SDATA (orig_filename), emacs_strerror (errno)); |
3d0387c0 RS |
4059 | else if (nread == 0) |
4060 | break; | |
6fdaa9a0 | 4061 | |
0ef69138 | 4062 | if (coding.type == coding_type_undecided) |
727a0b4a | 4063 | detect_coding (&coding, buffer, nread); |
8c3b9441 | 4064 | if (coding.common_flags & CODING_REQUIRE_DECODING_MASK) |
727a0b4a RS |
4065 | /* We found that the file should be decoded somehow. |
4066 | Let's give up here. */ | |
4067 | { | |
4068 | giveup_match_end = 1; | |
4069 | break; | |
4070 | } | |
4071 | ||
0ef69138 | 4072 | if (coding.eol_type == CODING_EOL_UNDECIDED) |
727a0b4a | 4073 | detect_eol (&coding, buffer, nread); |
1b335d29 | 4074 | if (coding.eol_type != CODING_EOL_UNDECIDED |
70ec4328 | 4075 | && coding.eol_type != CODING_EOL_LF) |
727a0b4a RS |
4076 | /* We found that the format of eol should be decoded. |
4077 | Let's give up here. */ | |
4078 | { | |
4079 | giveup_match_end = 1; | |
4080 | break; | |
4081 | } | |
4082 | ||
3d0387c0 | 4083 | bufpos = 0; |
ec7adf26 | 4084 | while (bufpos < nread && same_at_start < ZV_BYTE |
6fdaa9a0 | 4085 | && FETCH_BYTE (same_at_start) == buffer[bufpos]) |
3d0387c0 RS |
4086 | same_at_start++, bufpos++; |
4087 | /* If we found a discrepancy, stop the scan. | |
8e6208c5 | 4088 | Otherwise loop around and scan the next bufferful. */ |
3d0387c0 RS |
4089 | if (bufpos != nread) |
4090 | break; | |
4091 | } | |
4092 | immediate_quit = 0; | |
4093 | /* If the file matches the buffer completely, | |
4094 | there's no need to replace anything. */ | |
ec7adf26 | 4095 | if (same_at_start - BEGV_BYTE == XINT (end)) |
3d0387c0 | 4096 | { |
68c45bf0 | 4097 | emacs_close (fd); |
a1d2b64a | 4098 | specpdl_ptr--; |
1051b3b3 | 4099 | /* Truncate the buffer to the size of the file. */ |
7dae4502 | 4100 | del_range_1 (same_at_start, same_at_end, 0, 0); |
3d0387c0 RS |
4101 | goto handled; |
4102 | } | |
4103 | immediate_quit = 1; | |
4104 | QUIT; | |
4105 | /* Count how many chars at the end of the file | |
6fdaa9a0 KH |
4106 | match the text at the end of the buffer. But, if we have |
4107 | already found that decoding is necessary, don't waste time. */ | |
4108 | while (!giveup_match_end) | |
3d0387c0 RS |
4109 | { |
4110 | int total_read, nread, bufpos, curpos, trial; | |
4111 | ||
4112 | /* At what file position are we now scanning? */ | |
ec7adf26 | 4113 | curpos = XINT (end) - (ZV_BYTE - same_at_end); |
fc81fa9e KH |
4114 | /* If the entire file matches the buffer tail, stop the scan. */ |
4115 | if (curpos == 0) | |
4116 | break; | |
3d0387c0 RS |
4117 | /* How much can we scan in the next step? */ |
4118 | trial = min (curpos, sizeof buffer); | |
4119 | if (lseek (fd, curpos - trial, 0) < 0) | |
4120 | report_file_error ("Setting file position", | |
b1d1b865 | 4121 | Fcons (orig_filename, Qnil)); |
3d0387c0 | 4122 | |
b02439c8 | 4123 | total_read = nread = 0; |
3d0387c0 RS |
4124 | while (total_read < trial) |
4125 | { | |
68c45bf0 | 4126 | nread = emacs_read (fd, buffer + total_read, trial - total_read); |
2bd2273e | 4127 | if (nread < 0) |
3d0387c0 | 4128 | error ("IO error reading %s: %s", |
d5db4077 | 4129 | SDATA (orig_filename), emacs_strerror (errno)); |
2bd2273e GM |
4130 | else if (nread == 0) |
4131 | break; | |
3d0387c0 RS |
4132 | total_read += nread; |
4133 | } | |
efdc16c9 | 4134 | |
8e6208c5 | 4135 | /* Scan this bufferful from the end, comparing with |
3d0387c0 RS |
4136 | the Emacs buffer. */ |
4137 | bufpos = total_read; | |
efdc16c9 | 4138 | |
3d0387c0 RS |
4139 | /* Compare with same_at_start to avoid counting some buffer text |
4140 | as matching both at the file's beginning and at the end. */ | |
4141 | while (bufpos > 0 && same_at_end > same_at_start | |
6fdaa9a0 | 4142 | && FETCH_BYTE (same_at_end - 1) == buffer[bufpos - 1]) |
3d0387c0 | 4143 | same_at_end--, bufpos--; |
727a0b4a | 4144 | |
3d0387c0 | 4145 | /* If we found a discrepancy, stop the scan. |
8e6208c5 | 4146 | Otherwise loop around and scan the preceding bufferful. */ |
3d0387c0 | 4147 | if (bufpos != 0) |
727a0b4a RS |
4148 | { |
4149 | /* If this discrepancy is because of code conversion, | |
4150 | we cannot use this method; giveup and try the other. */ | |
4151 | if (same_at_end > same_at_start | |
4152 | && FETCH_BYTE (same_at_end - 1) >= 0200 | |
71312b68 | 4153 | && ! NILP (current_buffer->enable_multibyte_characters) |
c8a6d68a | 4154 | && (CODING_MAY_REQUIRE_DECODING (&coding))) |
727a0b4a RS |
4155 | giveup_match_end = 1; |
4156 | break; | |
4157 | } | |
b02439c8 GM |
4158 | |
4159 | if (nread == 0) | |
4160 | break; | |
3d0387c0 RS |
4161 | } |
4162 | immediate_quit = 0; | |
9c28748f | 4163 | |
727a0b4a RS |
4164 | if (! giveup_match_end) |
4165 | { | |
ec7adf26 RS |
4166 | int temp; |
4167 | ||
727a0b4a | 4168 | /* We win! We can handle REPLACE the optimized way. */ |
9c28748f | 4169 | |
20f6783d RS |
4170 | /* Extend the start of non-matching text area to multibyte |
4171 | character boundary. */ | |
4172 | if (! NILP (current_buffer->enable_multibyte_characters)) | |
4173 | while (same_at_start > BEGV_BYTE | |
4174 | && ! CHAR_HEAD_P (FETCH_BYTE (same_at_start))) | |
4175 | same_at_start--; | |
4176 | ||
4177 | /* Extend the end of non-matching text area to multibyte | |
71312b68 RS |
4178 | character boundary. */ |
4179 | if (! NILP (current_buffer->enable_multibyte_characters)) | |
ec7adf26 RS |
4180 | while (same_at_end < ZV_BYTE |
4181 | && ! CHAR_HEAD_P (FETCH_BYTE (same_at_end))) | |
71312b68 RS |
4182 | same_at_end++; |
4183 | ||
727a0b4a | 4184 | /* Don't try to reuse the same piece of text twice. */ |
ec7adf26 RS |
4185 | overlap = (same_at_start - BEGV_BYTE |
4186 | - (same_at_end + st.st_size - ZV)); | |
727a0b4a RS |
4187 | if (overlap > 0) |
4188 | same_at_end += overlap; | |
9c28748f | 4189 | |
727a0b4a | 4190 | /* Arrange to read only the nonmatching middle part of the file. */ |
ec7adf26 RS |
4191 | XSETFASTINT (beg, XINT (beg) + (same_at_start - BEGV_BYTE)); |
4192 | XSETFASTINT (end, XINT (end) - (ZV_BYTE - same_at_end)); | |
3dbcf3f6 | 4193 | |
ec7adf26 | 4194 | del_range_byte (same_at_start, same_at_end, 0); |
727a0b4a | 4195 | /* Insert from the file at the proper position. */ |
ec7adf26 RS |
4196 | temp = BYTE_TO_CHAR (same_at_start); |
4197 | SET_PT_BOTH (temp, same_at_start); | |
727a0b4a RS |
4198 | |
4199 | /* If display currently starts at beginning of line, | |
4200 | keep it that way. */ | |
4201 | if (XBUFFER (XWINDOW (selected_window)->buffer) == current_buffer) | |
4202 | XWINDOW (selected_window)->start_at_line_beg = Fbolp (); | |
4203 | ||
4204 | replace_handled = 1; | |
4205 | } | |
3dbcf3f6 RS |
4206 | } |
4207 | ||
4208 | /* If requested, replace the accessible part of the buffer | |
4209 | with the file contents. Avoid replacing text at the | |
4210 | beginning or end of the buffer that matches the file contents; | |
4211 | that preserves markers pointing to the unchanged parts. | |
4212 | ||
4213 | Here we implement this feature for the case where code conversion | |
4214 | is needed, in a simple way that needs a lot of memory. | |
4215 | The preceding if-statement handles the case of no conversion | |
4216 | in a more optimized way. */ | |
f736ffbf | 4217 | if (!NILP (replace) && ! replace_handled && BEGV < ZV) |
3dbcf3f6 | 4218 | { |
ec7adf26 RS |
4219 | int same_at_start = BEGV_BYTE; |
4220 | int same_at_end = ZV_BYTE; | |
3dbcf3f6 RS |
4221 | int overlap; |
4222 | int bufpos; | |
4223 | /* Make sure that the gap is large enough. */ | |
4224 | int bufsize = 2 * st.st_size; | |
b00ca0d7 | 4225 | unsigned char *conversion_buffer = (unsigned char *) xmalloc (bufsize); |
ec7adf26 | 4226 | int temp; |
3dbcf3f6 RS |
4227 | |
4228 | /* First read the whole file, performing code conversion into | |
4229 | CONVERSION_BUFFER. */ | |
4230 | ||
727a0b4a RS |
4231 | if (lseek (fd, XINT (beg), 0) < 0) |
4232 | { | |
68cfd853 | 4233 | xfree (conversion_buffer); |
727a0b4a | 4234 | report_file_error ("Setting file position", |
b1d1b865 | 4235 | Fcons (orig_filename, Qnil)); |
727a0b4a RS |
4236 | } |
4237 | ||
3dbcf3f6 RS |
4238 | total = st.st_size; /* Total bytes in the file. */ |
4239 | how_much = 0; /* Bytes read from file so far. */ | |
4240 | inserted = 0; /* Bytes put into CONVERSION_BUFFER so far. */ | |
4241 | unprocessed = 0; /* Bytes not processed in previous loop. */ | |
4242 | ||
4243 | while (how_much < total) | |
4244 | { | |
4245 | /* try is reserved in some compilers (Microsoft C) */ | |
4246 | int trytry = min (total - how_much, READ_BUF_SIZE - unprocessed); | |
cadf50ff | 4247 | unsigned char *destination = read_buf + unprocessed; |
3dbcf3f6 RS |
4248 | int this; |
4249 | ||
4250 | /* Allow quitting out of the actual I/O. */ | |
4251 | immediate_quit = 1; | |
4252 | QUIT; | |
68c45bf0 | 4253 | this = emacs_read (fd, destination, trytry); |
3dbcf3f6 RS |
4254 | immediate_quit = 0; |
4255 | ||
4256 | if (this < 0 || this + unprocessed == 0) | |
4257 | { | |
4258 | how_much = this; | |
4259 | break; | |
4260 | } | |
4261 | ||
4262 | how_much += this; | |
4263 | ||
c8a6d68a | 4264 | if (CODING_MAY_REQUIRE_DECODING (&coding)) |
3dbcf3f6 | 4265 | { |
c8a6d68a | 4266 | int require, result; |
3dbcf3f6 RS |
4267 | |
4268 | this += unprocessed; | |
4269 | ||
4270 | /* If we are using more space than estimated, | |
4271 | make CONVERSION_BUFFER bigger. */ | |
4272 | require = decoding_buffer_size (&coding, this); | |
4273 | if (inserted + require + 2 * (total - how_much) > bufsize) | |
4274 | { | |
4275 | bufsize = inserted + require + 2 * (total - how_much); | |
92cf1086 | 4276 | conversion_buffer = (unsigned char *) xrealloc (conversion_buffer, bufsize); |
3dbcf3f6 RS |
4277 | } |
4278 | ||
4279 | /* Convert this batch with results in CONVERSION_BUFFER. */ | |
4280 | if (how_much >= total) /* This is the last block. */ | |
c8a6d68a | 4281 | coding.mode |= CODING_MODE_LAST_BLOCK; |
1ddb09f5 GM |
4282 | if (coding.composing != COMPOSITION_DISABLED) |
4283 | coding_allocate_composition_data (&coding, BEGV); | |
c8a6d68a KH |
4284 | result = decode_coding (&coding, read_buf, |
4285 | conversion_buffer + inserted, | |
4286 | this, bufsize - inserted); | |
3dbcf3f6 RS |
4287 | |
4288 | /* Save for next iteration whatever we didn't convert. */ | |
c8a6d68a KH |
4289 | unprocessed = this - coding.consumed; |
4290 | bcopy (read_buf + coding.consumed, read_buf, unprocessed); | |
8c3b9441 KH |
4291 | if (!NILP (current_buffer->enable_multibyte_characters)) |
4292 | this = coding.produced; | |
4293 | else | |
4294 | this = str_as_unibyte (conversion_buffer + inserted, | |
4295 | coding.produced); | |
3dbcf3f6 RS |
4296 | } |
4297 | ||
4298 | inserted += this; | |
4299 | } | |
4300 | ||
c8a6d68a | 4301 | /* At this point, INSERTED is how many characters (i.e. bytes) |
3dbcf3f6 RS |
4302 | are present in CONVERSION_BUFFER. |
4303 | HOW_MUCH should equal TOTAL, | |
4304 | or should be <= 0 if we couldn't read the file. */ | |
4305 | ||
4306 | if (how_much < 0) | |
4307 | { | |
a36837e4 | 4308 | xfree (conversion_buffer); |
e254e5e5 | 4309 | coding_free_composition_data (&coding); |
3dbcf3f6 RS |
4310 | if (how_much == -1) |
4311 | error ("IO error reading %s: %s", | |
d5db4077 | 4312 | SDATA (orig_filename), emacs_strerror (errno)); |
3dbcf3f6 RS |
4313 | else if (how_much == -2) |
4314 | error ("maximum buffer size exceeded"); | |
4315 | } | |
4316 | ||
4317 | /* Compare the beginning of the converted file | |
4318 | with the buffer text. */ | |
4319 | ||
4320 | bufpos = 0; | |
4321 | while (bufpos < inserted && same_at_start < same_at_end | |
4322 | && FETCH_BYTE (same_at_start) == conversion_buffer[bufpos]) | |
4323 | same_at_start++, bufpos++; | |
4324 | ||
4325 | /* If the file matches the buffer completely, | |
4326 | there's no need to replace anything. */ | |
4327 | ||
4328 | if (bufpos == inserted) | |
4329 | { | |
a36837e4 | 4330 | xfree (conversion_buffer); |
e254e5e5 | 4331 | coding_free_composition_data (&coding); |
68c45bf0 | 4332 | emacs_close (fd); |
3dbcf3f6 RS |
4333 | specpdl_ptr--; |
4334 | /* Truncate the buffer to the size of the file. */ | |
427f5aab KH |
4335 | del_range_byte (same_at_start, same_at_end, 0); |
4336 | inserted = 0; | |
3dbcf3f6 RS |
4337 | goto handled; |
4338 | } | |
4339 | ||
20f6783d RS |
4340 | /* Extend the start of non-matching text area to multibyte |
4341 | character boundary. */ | |
4342 | if (! NILP (current_buffer->enable_multibyte_characters)) | |
4343 | while (same_at_start > BEGV_BYTE | |
4344 | && ! CHAR_HEAD_P (FETCH_BYTE (same_at_start))) | |
4345 | same_at_start--; | |
4346 | ||
3dbcf3f6 RS |
4347 | /* Scan this bufferful from the end, comparing with |
4348 | the Emacs buffer. */ | |
4349 | bufpos = inserted; | |
4350 | ||
4351 | /* Compare with same_at_start to avoid counting some buffer text | |
4352 | as matching both at the file's beginning and at the end. */ | |
4353 | while (bufpos > 0 && same_at_end > same_at_start | |
4354 | && FETCH_BYTE (same_at_end - 1) == conversion_buffer[bufpos - 1]) | |
4355 | same_at_end--, bufpos--; | |
4356 | ||
20f6783d RS |
4357 | /* Extend the end of non-matching text area to multibyte |
4358 | character boundary. */ | |
4359 | if (! NILP (current_buffer->enable_multibyte_characters)) | |
4360 | while (same_at_end < ZV_BYTE | |
4361 | && ! CHAR_HEAD_P (FETCH_BYTE (same_at_end))) | |
4362 | same_at_end++; | |
4363 | ||
3dbcf3f6 | 4364 | /* Don't try to reuse the same piece of text twice. */ |
ec7adf26 | 4365 | overlap = same_at_start - BEGV_BYTE - (same_at_end + inserted - ZV_BYTE); |
3dbcf3f6 RS |
4366 | if (overlap > 0) |
4367 | same_at_end += overlap; | |
4368 | ||
727a0b4a RS |
4369 | /* If display currently starts at beginning of line, |
4370 | keep it that way. */ | |
4371 | if (XBUFFER (XWINDOW (selected_window)->buffer) == current_buffer) | |
4372 | XWINDOW (selected_window)->start_at_line_beg = Fbolp (); | |
4373 | ||
3dbcf3f6 RS |
4374 | /* Replace the chars that we need to replace, |
4375 | and update INSERTED to equal the number of bytes | |
4376 | we are taking from the file. */ | |
4b70e2c9 | 4377 | inserted -= (ZV_BYTE - same_at_end) + (same_at_start - BEGV_BYTE); |
427f5aab | 4378 | |
643c73b9 | 4379 | if (same_at_end != same_at_start) |
427f5aab KH |
4380 | { |
4381 | del_range_byte (same_at_start, same_at_end, 0); | |
4382 | temp = GPT; | |
4383 | same_at_start = GPT_BYTE; | |
4384 | } | |
643c73b9 RS |
4385 | else |
4386 | { | |
643c73b9 | 4387 | temp = BYTE_TO_CHAR (same_at_start); |
643c73b9 | 4388 | } |
427f5aab KH |
4389 | /* Insert from the file at the proper position. */ |
4390 | SET_PT_BOTH (temp, same_at_start); | |
4b70e2c9 | 4391 | insert_1 (conversion_buffer + same_at_start - BEGV_BYTE, inserted, |
ec7adf26 | 4392 | 0, 0, 0); |
1ddb09f5 GM |
4393 | if (coding.cmp_data && coding.cmp_data->used) |
4394 | coding_restore_composition (&coding, Fcurrent_buffer ()); | |
4395 | coding_free_composition_data (&coding); | |
efdc16c9 | 4396 | |
427f5aab KH |
4397 | /* Set `inserted' to the number of inserted characters. */ |
4398 | inserted = PT - temp; | |
3dbcf3f6 | 4399 | |
93184560 | 4400 | xfree (conversion_buffer); |
68c45bf0 | 4401 | emacs_close (fd); |
3dbcf3f6 RS |
4402 | specpdl_ptr--; |
4403 | ||
3dbcf3f6 | 4404 | goto handled; |
3d0387c0 RS |
4405 | } |
4406 | ||
d4b8687b RS |
4407 | if (! not_regular) |
4408 | { | |
4409 | register Lisp_Object temp; | |
7fded690 | 4410 | |
d4b8687b | 4411 | total = XINT (end) - XINT (beg); |
570d7624 | 4412 | |
d4b8687b RS |
4413 | /* Make sure point-max won't overflow after this insertion. */ |
4414 | XSETINT (temp, total); | |
4415 | if (total != XINT (temp)) | |
4416 | error ("Maximum buffer size exceeded"); | |
4417 | } | |
4418 | else | |
4419 | /* For a special file, all we can do is guess. */ | |
4420 | total = READ_BUF_SIZE; | |
570d7624 | 4421 | |
68780e2a RS |
4422 | if (NILP (visit) && inserted > 0) |
4423 | { | |
4424 | #ifdef CLASH_DETECTION | |
4425 | if (!NILP (current_buffer->file_truename) | |
4426 | /* Make binding buffer-file-name to nil effective. */ | |
4427 | && !NILP (current_buffer->filename) | |
4428 | && SAVE_MODIFF >= MODIFF) | |
4429 | we_locked_file = 1; | |
4430 | #endif /* CLASH_DETECTION */ | |
4431 | prepare_to_modify_buffer (GPT, GPT, NULL); | |
4432 | } | |
570d7624 | 4433 | |
7fe52289 | 4434 | move_gap (PT); |
7fded690 JB |
4435 | if (GAP_SIZE < total) |
4436 | make_gap (total - GAP_SIZE); | |
4437 | ||
a1d2b64a | 4438 | if (XINT (beg) != 0 || !NILP (replace)) |
7fded690 JB |
4439 | { |
4440 | if (lseek (fd, XINT (beg), 0) < 0) | |
b1d1b865 RS |
4441 | report_file_error ("Setting file position", |
4442 | Fcons (orig_filename, Qnil)); | |
7fded690 JB |
4443 | } |
4444 | ||
6fdaa9a0 | 4445 | /* In the following loop, HOW_MUCH contains the total bytes read so |
c8a6d68a KH |
4446 | far for a regular file, and not changed for a special file. But, |
4447 | before exiting the loop, it is set to a negative value if I/O | |
4448 | error occurs. */ | |
a1d2b64a | 4449 | how_much = 0; |
efdc16c9 | 4450 | |
6fdaa9a0 KH |
4451 | /* Total bytes inserted. */ |
4452 | inserted = 0; | |
efdc16c9 | 4453 | |
c8a6d68a KH |
4454 | /* Here, we don't do code conversion in the loop. It is done by |
4455 | code_convert_region after all data are read into the buffer. */ | |
1b978129 GM |
4456 | { |
4457 | int gap_size = GAP_SIZE; | |
efdc16c9 | 4458 | |
1b978129 GM |
4459 | while (how_much < total) |
4460 | { | |
5e570b75 | 4461 | /* try is reserved in some compilers (Microsoft C) */ |
1b978129 GM |
4462 | int trytry = min (total - how_much, READ_BUF_SIZE); |
4463 | int this; | |
570d7624 | 4464 | |
1b978129 GM |
4465 | if (not_regular) |
4466 | { | |
4467 | Lisp_Object val; | |
570d7624 | 4468 | |
1b978129 GM |
4469 | /* Maybe make more room. */ |
4470 | if (gap_size < trytry) | |
4471 | { | |
4472 | make_gap (total - gap_size); | |
4473 | gap_size = GAP_SIZE; | |
4474 | } | |
4475 | ||
4476 | /* Read from the file, capturing `quit'. When an | |
4477 | error occurs, end the loop, and arrange for a quit | |
4478 | to be signaled after decoding the text we read. */ | |
4479 | non_regular_fd = fd; | |
4480 | non_regular_inserted = inserted; | |
4481 | non_regular_nbytes = trytry; | |
4482 | val = internal_condition_case_1 (read_non_regular, Qnil, Qerror, | |
4483 | read_non_regular_quit); | |
4484 | if (NILP (val)) | |
4485 | { | |
4486 | read_quit = 1; | |
4487 | break; | |
4488 | } | |
4489 | ||
4490 | this = XINT (val); | |
4491 | } | |
4492 | else | |
4493 | { | |
4494 | /* Allow quitting out of the actual I/O. We don't make text | |
4495 | part of the buffer until all the reading is done, so a C-g | |
4496 | here doesn't do any harm. */ | |
4497 | immediate_quit = 1; | |
4498 | QUIT; | |
28c3eb5a | 4499 | this = emacs_read (fd, BEG_ADDR + PT_BYTE - BEG_BYTE + inserted, trytry); |
1b978129 GM |
4500 | immediate_quit = 0; |
4501 | } | |
efdc16c9 | 4502 | |
1b978129 GM |
4503 | if (this <= 0) |
4504 | { | |
4505 | how_much = this; | |
4506 | break; | |
4507 | } | |
4508 | ||
4509 | gap_size -= this; | |
4510 | ||
4511 | /* For a regular file, where TOTAL is the real size, | |
4512 | count HOW_MUCH to compare with it. | |
4513 | For a special file, where TOTAL is just a buffer size, | |
4514 | so don't bother counting in HOW_MUCH. | |
4515 | (INSERTED is where we count the number of characters inserted.) */ | |
4516 | if (! not_regular) | |
4517 | how_much += this; | |
4518 | inserted += this; | |
4519 | } | |
4520 | } | |
4521 | ||
68780e2a RS |
4522 | /* Now we have read all the file data into the gap. |
4523 | If it was empty, undo marking the buffer modified. */ | |
4524 | ||
4525 | if (inserted == 0) | |
4526 | { | |
6840d350 | 4527 | #ifdef CLASH_DETECTION |
68780e2a RS |
4528 | if (we_locked_file) |
4529 | unlock_file (current_buffer->file_truename); | |
6840d350 | 4530 | #endif |
68780e2a RS |
4531 | Vdeactivate_mark = old_Vdeactivate_mark; |
4532 | } | |
4533 | ||
1b978129 GM |
4534 | /* Make the text read part of the buffer. */ |
4535 | GAP_SIZE -= inserted; | |
4536 | GPT += inserted; | |
4537 | GPT_BYTE += inserted; | |
4538 | ZV += inserted; | |
4539 | ZV_BYTE += inserted; | |
4540 | Z += inserted; | |
4541 | Z_BYTE += inserted; | |
6fdaa9a0 | 4542 | |
c8a6d68a KH |
4543 | if (GAP_SIZE > 0) |
4544 | /* Put an anchor to ensure multi-byte form ends at gap. */ | |
4545 | *GPT_ADDR = 0; | |
d4b8687b | 4546 | |
68c45bf0 | 4547 | emacs_close (fd); |
6fdaa9a0 | 4548 | |
c8a6d68a KH |
4549 | /* Discard the unwind protect for closing the file. */ |
4550 | specpdl_ptr--; | |
6fdaa9a0 | 4551 | |
c8a6d68a KH |
4552 | if (how_much < 0) |
4553 | error ("IO error reading %s: %s", | |
d5db4077 | 4554 | SDATA (orig_filename), emacs_strerror (errno)); |
ec7adf26 | 4555 | |
f8569325 DL |
4556 | notfound: |
4557 | ||
2df42e09 | 4558 | if (! coding_system_decided) |
c8a6d68a | 4559 | { |
2df42e09 | 4560 | /* The coding system is not yet decided. Decide it by an |
dfe35e7b RS |
4561 | optimized method for handling `coding:' tag. |
4562 | ||
4563 | Note that we can get here only if the buffer was empty | |
4564 | before the insertion. */ | |
2df42e09 KH |
4565 | Lisp_Object val; |
4566 | val = Qnil; | |
f736ffbf | 4567 | |
2df42e09 KH |
4568 | if (!NILP (Vcoding_system_for_read)) |
4569 | val = Vcoding_system_for_read; | |
4570 | else | |
4571 | { | |
98a7d268 KH |
4572 | /* Since we are sure that the current buffer was empty |
4573 | before the insertion, we can toggle | |
4574 | enable-multibyte-characters directly here without taking | |
4575 | care of marker adjustment and byte combining problem. By | |
4576 | this way, we can run Lisp program safely before decoding | |
4577 | the inserted text. */ | |
4578 | Lisp_Object unwind_data; | |
87e3d54c | 4579 | int count = SPECPDL_INDEX (); |
2df42e09 | 4580 | |
98a7d268 KH |
4581 | unwind_data = Fcons (current_buffer->enable_multibyte_characters, |
4582 | Fcons (current_buffer->undo_list, | |
4583 | Fcurrent_buffer ())); | |
87e3d54c | 4584 | current_buffer->enable_multibyte_characters = Qnil; |
98a7d268 KH |
4585 | current_buffer->undo_list = Qt; |
4586 | record_unwind_protect (decide_coding_unwind, unwind_data); | |
4587 | ||
4588 | if (inserted > 0 && ! NILP (Vset_auto_coding_function)) | |
4589 | { | |
1255deb9 KH |
4590 | val = call2 (Vset_auto_coding_function, |
4591 | filename, make_number (inserted)); | |
2df42e09 | 4592 | } |
f736ffbf | 4593 | |
2df42e09 KH |
4594 | if (NILP (val)) |
4595 | { | |
4596 | /* If the coding system is not yet decided, check | |
4597 | file-coding-system-alist. */ | |
4598 | Lisp_Object args[6], coding_systems; | |
f736ffbf | 4599 | |
2df42e09 KH |
4600 | args[0] = Qinsert_file_contents, args[1] = orig_filename; |
4601 | args[2] = visit, args[3] = beg, args[4] = end, args[5] = Qnil; | |
4602 | coding_systems = Ffind_operation_coding_system (6, args); | |
4603 | if (CONSP (coding_systems)) | |
03699b14 | 4604 | val = XCAR (coding_systems); |
f736ffbf | 4605 | } |
98a7d268 KH |
4606 | unbind_to (count, Qnil); |
4607 | inserted = Z_BYTE - BEG_BYTE; | |
2df42e09 | 4608 | } |
f736ffbf | 4609 | |
2df42e09 KH |
4610 | /* The following kludgy code is to avoid some compiler bug. |
4611 | We can't simply do | |
4612 | setup_coding_system (val, &coding); | |
4613 | on some system. */ | |
4614 | { | |
4615 | struct coding_system temp_coding; | |
87e3d54c | 4616 | setup_coding_system (Fcheck_coding_system (val), &temp_coding); |
2df42e09 KH |
4617 | bcopy (&temp_coding, &coding, sizeof coding); |
4618 | } | |
f8569325 DL |
4619 | /* Ensure we set Vlast_coding_system_used. */ |
4620 | set_coding_system = 1; | |
f736ffbf | 4621 | |
237a6fd2 RS |
4622 | if (NILP (current_buffer->enable_multibyte_characters) |
4623 | && ! NILP (val)) | |
4624 | /* We must suppress all character code conversion except for | |
2df42e09 KH |
4625 | end-of-line conversion. */ |
4626 | setup_raw_text_coding_system (&coding); | |
6db43875 KH |
4627 | coding.src_multibyte = 0; |
4628 | coding.dst_multibyte | |
4629 | = !NILP (current_buffer->enable_multibyte_characters); | |
2df42e09 | 4630 | } |
f736ffbf | 4631 | |
8c3b9441 | 4632 | if (!NILP (visit) |
24766480 GM |
4633 | /* Can't do this if part of the buffer might be preserved. */ |
4634 | && NILP (replace) | |
8c3b9441 KH |
4635 | && (coding.type == coding_type_no_conversion |
4636 | || coding.type == coding_type_raw_text)) | |
4637 | { | |
24766480 GM |
4638 | /* Visiting a file with these coding system makes the buffer |
4639 | unibyte. */ | |
4640 | current_buffer->enable_multibyte_characters = Qnil; | |
e1249666 | 4641 | coding.dst_multibyte = 0; |
8c3b9441 KH |
4642 | } |
4643 | ||
c91beee2 | 4644 | if (inserted > 0 || coding.type == coding_type_ccl) |
2df42e09 | 4645 | { |
c8a6d68a | 4646 | if (CODING_MAY_REQUIRE_DECODING (&coding)) |
64e0ae2a KH |
4647 | { |
4648 | code_convert_region (PT, PT_BYTE, PT + inserted, PT_BYTE + inserted, | |
4649 | &coding, 0, 0); | |
8c3b9441 | 4650 | inserted = coding.produced_char; |
f8198e19 | 4651 | } |
e9cea947 AS |
4652 | else |
4653 | adjust_after_insert (PT, PT_BYTE, PT + inserted, PT_BYTE + inserted, | |
8c3b9441 | 4654 | inserted); |
2df42e09 | 4655 | } |
570d7624 | 4656 | |
cf6d2357 RS |
4657 | /* Now INSERTED is measured in characters. */ |
4658 | ||
04e6f79c | 4659 | #ifdef DOS_NT |
2df42e09 KH |
4660 | /* Use the conversion type to determine buffer-file-type |
4661 | (find-buffer-file-type is now used to help determine the | |
4662 | conversion). */ | |
efdc16c9 | 4663 | if ((coding.eol_type == CODING_EOL_UNDECIDED |
2df42e09 KH |
4664 | || coding.eol_type == CODING_EOL_LF) |
4665 | && ! CODING_REQUIRE_DECODING (&coding)) | |
4666 | current_buffer->buffer_file_type = Qt; | |
4667 | else | |
4668 | current_buffer->buffer_file_type = Qnil; | |
04e6f79c | 4669 | #endif |
570d7624 | 4670 | |
32f4334d | 4671 | handled: |
570d7624 | 4672 | |
265a9e55 | 4673 | if (!NILP (visit)) |
570d7624 | 4674 | { |
cfadd376 RS |
4675 | if (!EQ (current_buffer->undo_list, Qt)) |
4676 | current_buffer->undo_list = Qnil; | |
570d7624 | 4677 | #ifdef APOLLO |
d5db4077 | 4678 | stat (SDATA (filename), &st); |
570d7624 | 4679 | #endif |
62bcf009 | 4680 | |
a7e82472 RS |
4681 | if (NILP (handler)) |
4682 | { | |
4683 | current_buffer->modtime = st.st_mtime; | |
b1d1b865 | 4684 | current_buffer->filename = orig_filename; |
a7e82472 | 4685 | } |
62bcf009 | 4686 | |
95385625 | 4687 | SAVE_MODIFF = MODIFF; |
570d7624 | 4688 | current_buffer->auto_save_modified = MODIFF; |
2acfd7ae | 4689 | XSETFASTINT (current_buffer->save_length, Z - BEG); |
570d7624 | 4690 | #ifdef CLASH_DETECTION |
32f4334d RS |
4691 | if (NILP (handler)) |
4692 | { | |
f471f4c2 RS |
4693 | if (!NILP (current_buffer->file_truename)) |
4694 | unlock_file (current_buffer->file_truename); | |
32f4334d RS |
4695 | unlock_file (filename); |
4696 | } | |
570d7624 | 4697 | #endif /* CLASH_DETECTION */ |
330bfe57 RS |
4698 | if (not_regular) |
4699 | Fsignal (Qfile_error, | |
4700 | Fcons (build_string ("not a regular file"), | |
b1d1b865 | 4701 | Fcons (orig_filename, Qnil))); |
570d7624 JB |
4702 | } |
4703 | ||
b6426b03 KH |
4704 | if (set_coding_system) |
4705 | Vlast_coding_system_used = coding.symbol; | |
4706 | ||
2080470e | 4707 | if (! NILP (Ffboundp (Qafter_insert_file_set_coding))) |
b6426b03 | 4708 | { |
37a3c774 KH |
4709 | insval = call2 (Qafter_insert_file_set_coding, make_number (inserted), |
4710 | visit); | |
b6426b03 KH |
4711 | if (! NILP (insval)) |
4712 | { | |
4713 | CHECK_NUMBER (insval); | |
4714 | inserted = XFASTINT (insval); | |
4715 | } | |
4716 | } | |
4717 | ||
0d420e88 | 4718 | /* Decode file format */ |
c8a6d68a | 4719 | if (inserted > 0) |
0d420e88 | 4720 | { |
ed8e506f | 4721 | int empty_undo_list_p = 0; |
efdc16c9 | 4722 | |
ed8e506f GM |
4723 | /* If we're anyway going to discard undo information, don't |
4724 | record it in the first place. The buffer's undo list at this | |
4725 | point is either nil or t when visiting a file. */ | |
4726 | if (!NILP (visit)) | |
4727 | { | |
4728 | empty_undo_list_p = NILP (current_buffer->undo_list); | |
4729 | current_buffer->undo_list = Qt; | |
4730 | } | |
efdc16c9 | 4731 | |
199607e4 | 4732 | insval = call3 (Qformat_decode, |
c8a6d68a | 4733 | Qnil, make_number (inserted), visit); |
b7826503 | 4734 | CHECK_NUMBER (insval); |
c8a6d68a | 4735 | inserted = XFASTINT (insval); |
efdc16c9 | 4736 | |
ed8e506f GM |
4737 | if (!NILP (visit)) |
4738 | current_buffer->undo_list = empty_undo_list_p ? Qnil : Qt; | |
0d420e88 BG |
4739 | } |
4740 | ||
0342d8c5 RS |
4741 | /* Call after-change hooks for the inserted text, aside from the case |
4742 | of normal visiting (not with REPLACE), which is done in a new buffer | |
4743 | "before" the buffer is changed. */ | |
c8a6d68a | 4744 | if (inserted > 0 && total > 0 |
0342d8c5 | 4745 | && (NILP (visit) || !NILP (replace))) |
ce51c54c KH |
4746 | { |
4747 | signal_after_change (PT, 0, inserted); | |
4748 | update_compositions (PT, PT, CHECK_BORDER); | |
4749 | } | |
b56567b5 | 4750 | |
f8569325 | 4751 | p = Vafter_insert_file_functions; |
28c3eb5a | 4752 | while (CONSP (p)) |
d6a3cc15 | 4753 | { |
28c3eb5a | 4754 | insval = call1 (XCAR (p), make_number (inserted)); |
f8569325 | 4755 | if (!NILP (insval)) |
d6a3cc15 | 4756 | { |
b7826503 | 4757 | CHECK_NUMBER (insval); |
f8569325 | 4758 | inserted = XFASTINT (insval); |
d6a3cc15 | 4759 | } |
f8569325 | 4760 | QUIT; |
28c3eb5a | 4761 | p = XCDR (p); |
f8569325 DL |
4762 | } |
4763 | ||
4764 | if (!NILP (visit) | |
4765 | && current_buffer->modtime == -1) | |
4766 | { | |
4767 | /* If visiting nonexistent file, return nil. */ | |
4768 | report_file_error ("Opening input file", Fcons (orig_filename, Qnil)); | |
d6a3cc15 RS |
4769 | } |
4770 | ||
1b978129 GM |
4771 | if (read_quit) |
4772 | Fsignal (Qquit, Qnil); | |
4773 | ||
ec7adf26 | 4774 | /* ??? Retval needs to be dealt with in all cases consistently. */ |
a1d2b64a | 4775 | if (NILP (val)) |
b1d1b865 | 4776 | val = Fcons (orig_filename, |
a1d2b64a RS |
4777 | Fcons (make_number (inserted), |
4778 | Qnil)); | |
4779 | ||
4780 | RETURN_UNGCPRO (unbind_to (count, val)); | |
570d7624 | 4781 | } |
7fded690 | 4782 | \f |
236a12f2 SM |
4783 | static Lisp_Object build_annotations P_ ((Lisp_Object, Lisp_Object)); |
4784 | static Lisp_Object build_annotations_2 P_ ((Lisp_Object, Lisp_Object, | |
4785 | Lisp_Object, Lisp_Object)); | |
d6a3cc15 | 4786 | |
6fc6f94b | 4787 | /* If build_annotations switched buffers, switch back to BUF. |
6fdaa9a0 KH |
4788 | Kill the temporary buffer that was selected in the meantime. |
4789 | ||
4790 | Since this kill only the last temporary buffer, some buffers remain | |
4791 | not killed if build_annotations switched buffers more than once. | |
4792 | -- K.Handa */ | |
6fc6f94b | 4793 | |
199607e4 | 4794 | static Lisp_Object |
6fc6f94b RS |
4795 | build_annotations_unwind (buf) |
4796 | Lisp_Object buf; | |
4797 | { | |
4798 | Lisp_Object tembuf; | |
4799 | ||
4800 | if (XBUFFER (buf) == current_buffer) | |
4801 | return Qnil; | |
4802 | tembuf = Fcurrent_buffer (); | |
4803 | Fset_buffer (buf); | |
4804 | Fkill_buffer (tembuf); | |
4805 | return Qnil; | |
4806 | } | |
4807 | ||
7c82a4a9 SM |
4808 | /* Decide the coding-system to encode the data with. */ |
4809 | ||
4810 | void | |
4811 | choose_write_coding_system (start, end, filename, | |
4812 | append, visit, lockname, coding) | |
4813 | Lisp_Object start, end, filename, append, visit, lockname; | |
4814 | struct coding_system *coding; | |
4815 | { | |
4816 | Lisp_Object val; | |
4817 | ||
dc2628c1 RS |
4818 | if (auto_saving |
4819 | && NILP (Fstring_equal (current_buffer->filename, | |
4820 | current_buffer->auto_save_file_name))) | |
356a6224 KH |
4821 | { |
4822 | /* We use emacs-mule for auto saving... */ | |
4823 | setup_coding_system (Qemacs_mule, coding); | |
4824 | /* ... but with the special flag to indicate not to strip off | |
4825 | leading code of eight-bit-control chars. */ | |
4826 | coding->flags = 1; | |
4827 | goto done_setup_coding; | |
4828 | } | |
7c82a4a9 | 4829 | else if (!NILP (Vcoding_system_for_write)) |
42b01e1e KH |
4830 | { |
4831 | val = Vcoding_system_for_write; | |
4832 | if (coding_system_require_warning | |
4833 | && !NILP (Ffboundp (Vselect_safe_coding_system_function))) | |
4834 | /* Confirm that VAL can surely encode the current region. */ | |
4835 | val = call5 (Vselect_safe_coding_system_function, | |
4836 | start, end, Fcons (Qt, Fcons (val, Qnil)), | |
4837 | Qnil, filename); | |
4838 | } | |
7c82a4a9 SM |
4839 | else |
4840 | { | |
4841 | /* If the variable `buffer-file-coding-system' is set locally, | |
4842 | it means that the file was read with some kind of code | |
4843 | conversion or the variable is explicitly set by users. We | |
4844 | had better write it out with the same coding system even if | |
4845 | `enable-multibyte-characters' is nil. | |
4846 | ||
4847 | If it is not set locally, we anyway have to convert EOL | |
4848 | format if the default value of `buffer-file-coding-system' | |
4849 | tells that it is not Unix-like (LF only) format. */ | |
4850 | int using_default_coding = 0; | |
4851 | int force_raw_text = 0; | |
4852 | ||
4853 | val = current_buffer->buffer_file_coding_system; | |
4854 | if (NILP (val) | |
4855 | || NILP (Flocal_variable_p (Qbuffer_file_coding_system, Qnil))) | |
4856 | { | |
4857 | val = Qnil; | |
4858 | if (NILP (current_buffer->enable_multibyte_characters)) | |
4859 | force_raw_text = 1; | |
4860 | } | |
efdc16c9 | 4861 | |
7c82a4a9 SM |
4862 | if (NILP (val)) |
4863 | { | |
4864 | /* Check file-coding-system-alist. */ | |
4865 | Lisp_Object args[7], coding_systems; | |
4866 | ||
4867 | args[0] = Qwrite_region; args[1] = start; args[2] = end; | |
4868 | args[3] = filename; args[4] = append; args[5] = visit; | |
4869 | args[6] = lockname; | |
4870 | coding_systems = Ffind_operation_coding_system (7, args); | |
4871 | if (CONSP (coding_systems) && !NILP (XCDR (coding_systems))) | |
4872 | val = XCDR (coding_systems); | |
4873 | } | |
4874 | ||
4875 | if (NILP (val) | |
4876 | && !NILP (current_buffer->buffer_file_coding_system)) | |
4877 | { | |
4878 | /* If we still have not decided a coding system, use the | |
4879 | default value of buffer-file-coding-system. */ | |
4880 | val = current_buffer->buffer_file_coding_system; | |
4881 | using_default_coding = 1; | |
4882 | } | |
efdc16c9 | 4883 | |
7c82a4a9 SM |
4884 | if (!force_raw_text |
4885 | && !NILP (Ffboundp (Vselect_safe_coding_system_function))) | |
4886 | /* Confirm that VAL can surely encode the current region. */ | |
905a4276 PJ |
4887 | val = call5 (Vselect_safe_coding_system_function, |
4888 | start, end, val, Qnil, filename); | |
7c82a4a9 SM |
4889 | |
4890 | setup_coding_system (Fcheck_coding_system (val), coding); | |
4891 | if (coding->eol_type == CODING_EOL_UNDECIDED | |
4892 | && !using_default_coding) | |
4893 | { | |
4894 | if (! EQ (default_buffer_file_coding.symbol, | |
4895 | buffer_defaults.buffer_file_coding_system)) | |
4896 | setup_coding_system (buffer_defaults.buffer_file_coding_system, | |
4897 | &default_buffer_file_coding); | |
4898 | if (default_buffer_file_coding.eol_type != CODING_EOL_UNDECIDED) | |
4899 | { | |
4900 | Lisp_Object subsidiaries; | |
4901 | ||
4902 | coding->eol_type = default_buffer_file_coding.eol_type; | |
4903 | subsidiaries = Fget (coding->symbol, Qeol_type); | |
4904 | if (VECTORP (subsidiaries) | |
4905 | && XVECTOR (subsidiaries)->size == 3) | |
4906 | coding->symbol | |
4907 | = XVECTOR (subsidiaries)->contents[coding->eol_type]; | |
4908 | } | |
4909 | } | |
4910 | ||
4911 | if (force_raw_text) | |
4912 | setup_raw_text_coding_system (coding); | |
4913 | goto done_setup_coding; | |
4914 | } | |
4915 | ||
4916 | setup_coding_system (Fcheck_coding_system (val), coding); | |
4917 | ||
4918 | done_setup_coding: | |
4919 | if (!STRINGP (start) && !NILP (current_buffer->selective_display)) | |
4920 | coding->mode |= CODING_MODE_SELECTIVE_DISPLAY; | |
4921 | } | |
4922 | ||
de1d0127 | 4923 | DEFUN ("write-region", Fwrite_region, Swrite_region, 3, 7, |
8c1a1077 PJ |
4924 | "r\nFWrite region to file: \ni\ni\ni\np", |
4925 | doc: /* Write current region into specified file. | |
c2efea25 RS |
4926 | When called from a program, requires three arguments: |
4927 | START, END and FILENAME. START and END are normally buffer positions | |
4928 | specifying the part of the buffer to write. | |
4929 | If START is nil, that means to use the entire buffer contents. | |
4930 | If START is a string, then output that string to the file | |
4931 | instead of any buffer contents; END is ignored. | |
4932 | ||
8c1a1077 PJ |
4933 | Optional fourth argument APPEND if non-nil means |
4934 | append to existing file contents (if any). If it is an integer, | |
4935 | seek to that offset in the file before writing. | |
36e50520 | 4936 | Optional fifth argument VISIT, if t or a string, means |
8c1a1077 PJ |
4937 | set the last-save-file-modtime of buffer to this file's modtime |
4938 | and mark buffer not modified. | |
4939 | If VISIT is a string, it is a second file name; | |
4940 | the output goes to FILENAME, but the buffer is marked as visiting VISIT. | |
4941 | VISIT is also the file name to lock and unlock for clash detection. | |
4942 | If VISIT is neither t nor nil nor a string, | |
5f4e6aa9 | 4943 | that means do not display the \"Wrote file\" message. |
8c1a1077 PJ |
4944 | The optional sixth arg LOCKNAME, if non-nil, specifies the name to |
4945 | use for locking and unlocking, overriding FILENAME and VISIT. | |
4946 | The optional seventh arg MUSTBENEW, if non-nil, insists on a check | |
4947 | for an existing file with the same name. If MUSTBENEW is `excl', | |
4948 | that means to get an error if the file already exists; never overwrite. | |
4949 | If MUSTBENEW is neither nil nor `excl', that means ask for | |
4950 | confirmation before overwriting, but do go ahead and overwrite the file | |
4951 | if the user confirms. | |
8c1a1077 PJ |
4952 | |
4953 | This does code conversion according to the value of | |
4954 | `coding-system-for-write', `buffer-file-coding-system', or | |
4955 | `file-coding-system-alist', and sets the variable | |
4956 | `last-coding-system-used' to the coding system actually used. */) | |
4957 | (start, end, filename, append, visit, lockname, mustbenew) | |
f7b4065f | 4958 | Lisp_Object start, end, filename, append, visit, lockname, mustbenew; |
570d7624 JB |
4959 | { |
4960 | register int desc; | |
4961 | int failure; | |
6bbd7a29 | 4962 | int save_errno = 0; |
19290c65 | 4963 | const unsigned char *fn; |
570d7624 | 4964 | struct stat st; |
c975dd7a | 4965 | int tem; |
aed13378 | 4966 | int count = SPECPDL_INDEX (); |
6fc6f94b | 4967 | int count1; |
570d7624 | 4968 | #ifdef VMS |
5e570b75 | 4969 | unsigned char *fname = 0; /* If non-0, original filename (must rename) */ |
570d7624 | 4970 | #endif /* VMS */ |
3eac9910 | 4971 | Lisp_Object handler; |
4ad827c5 | 4972 | Lisp_Object visit_file; |
65b7d3e7 | 4973 | Lisp_Object annotations; |
b1d1b865 | 4974 | Lisp_Object encoded_filename; |
d3a67486 SM |
4975 | int visiting = (EQ (visit, Qt) || STRINGP (visit)); |
4976 | int quietly = !NILP (visit); | |
7204a979 | 4977 | struct gcpro gcpro1, gcpro2, gcpro3, gcpro4, gcpro5; |
6fc6f94b | 4978 | struct buffer *given_buffer; |
5e570b75 | 4979 | #ifdef DOS_NT |
fa228724 | 4980 | int buffer_file_type = O_BINARY; |
5e570b75 | 4981 | #endif /* DOS_NT */ |
6fdaa9a0 | 4982 | struct coding_system coding; |
570d7624 | 4983 | |
d3a67486 | 4984 | if (current_buffer->base_buffer && visiting) |
95385625 RS |
4985 | error ("Cannot do file visiting in an indirect buffer"); |
4986 | ||
561cb8e1 | 4987 | if (!NILP (start) && !STRINGP (start)) |
570d7624 JB |
4988 | validate_region (&start, &end); |
4989 | ||
59fac292 | 4990 | GCPRO5 (start, filename, visit, visit_file, lockname); |
b56567b5 | 4991 | |
570d7624 | 4992 | filename = Fexpand_file_name (filename, Qnil); |
de1d0127 | 4993 | |
236a12f2 | 4994 | if (!NILP (mustbenew) && !EQ (mustbenew, Qexcl)) |
b8b29dc9 | 4995 | barf_or_query_if_file_exists (filename, "overwrite", 1, 0, 1); |
de1d0127 | 4996 | |
561cb8e1 | 4997 | if (STRINGP (visit)) |
e5176bae | 4998 | visit_file = Fexpand_file_name (visit, Qnil); |
4ad827c5 RS |
4999 | else |
5000 | visit_file = filename; | |
5001 | ||
7204a979 RS |
5002 | if (NILP (lockname)) |
5003 | lockname = visit_file; | |
5004 | ||
65b7d3e7 RS |
5005 | annotations = Qnil; |
5006 | ||
32f4334d RS |
5007 | /* If the file name has special constructs in it, |
5008 | call the corresponding file handler. */ | |
49307295 | 5009 | handler = Ffind_file_name_handler (filename, Qwrite_region); |
b56ad927 | 5010 | /* If FILENAME has no handler, see if VISIT has one. */ |
93c30b5f | 5011 | if (NILP (handler) && STRINGP (visit)) |
199607e4 | 5012 | handler = Ffind_file_name_handler (visit, Qwrite_region); |
3eac9910 | 5013 | |
32f4334d RS |
5014 | if (!NILP (handler)) |
5015 | { | |
32f4334d | 5016 | Lisp_Object val; |
51cf6d37 RS |
5017 | val = call6 (handler, Qwrite_region, start, end, |
5018 | filename, append, visit); | |
32f4334d | 5019 | |
d6a3cc15 | 5020 | if (visiting) |
32f4334d | 5021 | { |
95385625 | 5022 | SAVE_MODIFF = MODIFF; |
2acfd7ae | 5023 | XSETFASTINT (current_buffer->save_length, Z - BEG); |
3b7792ed | 5024 | current_buffer->filename = visit_file; |
32f4334d | 5025 | } |
09121adc | 5026 | UNGCPRO; |
32f4334d RS |
5027 | return val; |
5028 | } | |
5029 | ||
4a38de71 KH |
5030 | record_unwind_protect (save_restriction_restore, save_restriction_save ()); |
5031 | ||
561cb8e1 RS |
5032 | /* Special kludge to simplify auto-saving. */ |
5033 | if (NILP (start)) | |
5034 | { | |
2acfd7ae KH |
5035 | XSETFASTINT (start, BEG); |
5036 | XSETFASTINT (end, Z); | |
4a38de71 | 5037 | Fwiden (); |
561cb8e1 RS |
5038 | } |
5039 | ||
6fc6f94b | 5040 | record_unwind_protect (build_annotations_unwind, Fcurrent_buffer ()); |
aed13378 | 5041 | count1 = SPECPDL_INDEX (); |
6fc6f94b RS |
5042 | |
5043 | given_buffer = current_buffer; | |
bf3428a1 RS |
5044 | |
5045 | if (!STRINGP (start)) | |
236a12f2 | 5046 | { |
bf3428a1 RS |
5047 | annotations = build_annotations (start, end); |
5048 | ||
5049 | if (current_buffer != given_buffer) | |
5050 | { | |
5051 | XSETFASTINT (start, BEGV); | |
5052 | XSETFASTINT (end, ZV); | |
5053 | } | |
236a12f2 SM |
5054 | } |
5055 | ||
5056 | UNGCPRO; | |
5057 | ||
5058 | GCPRO5 (start, filename, annotations, visit_file, lockname); | |
5059 | ||
59fac292 SM |
5060 | /* Decide the coding-system to encode the data with. |
5061 | We used to make this choice before calling build_annotations, but that | |
5062 | leads to problems when a write-annotate-function takes care of | |
5063 | unsavable chars (as was the case with X-Symbol). */ | |
5064 | choose_write_coding_system (start, end, filename, | |
5065 | append, visit, lockname, &coding); | |
5066 | Vlast_coding_system_used = coding.symbol; | |
5067 | ||
236a12f2 | 5068 | given_buffer = current_buffer; |
bf3428a1 | 5069 | if (! STRINGP (start)) |
6fc6f94b | 5070 | { |
bf3428a1 RS |
5071 | annotations = build_annotations_2 (start, end, |
5072 | coding.pre_write_conversion, annotations); | |
5073 | if (current_buffer != given_buffer) | |
5074 | { | |
5075 | XSETFASTINT (start, BEGV); | |
5076 | XSETFASTINT (end, ZV); | |
5077 | } | |
6fc6f94b | 5078 | } |
d6a3cc15 | 5079 | |
570d7624 JB |
5080 | #ifdef CLASH_DETECTION |
5081 | if (!auto_saving) | |
84f6296a | 5082 | { |
a9171faa | 5083 | #if 0 /* This causes trouble for GNUS. */ |
84f6296a RS |
5084 | /* If we've locked this file for some other buffer, |
5085 | query before proceeding. */ | |
5086 | if (!visiting && EQ (Ffile_locked_p (lockname), Qt)) | |
bffd00b0 | 5087 | call2 (intern ("ask-user-about-lock"), filename, Vuser_login_name); |
a9171faa | 5088 | #endif |
84f6296a RS |
5089 | |
5090 | lock_file (lockname); | |
5091 | } | |
570d7624 JB |
5092 | #endif /* CLASH_DETECTION */ |
5093 | ||
b1d1b865 RS |
5094 | encoded_filename = ENCODE_FILE (filename); |
5095 | ||
d5db4077 | 5096 | fn = SDATA (encoded_filename); |
570d7624 | 5097 | desc = -1; |
265a9e55 | 5098 | if (!NILP (append)) |
5e570b75 | 5099 | #ifdef DOS_NT |
68c45bf0 | 5100 | desc = emacs_open (fn, O_WRONLY | buffer_file_type, 0); |
5e570b75 | 5101 | #else /* not DOS_NT */ |
68c45bf0 | 5102 | desc = emacs_open (fn, O_WRONLY, 0); |
5e570b75 | 5103 | #endif /* not DOS_NT */ |
570d7624 | 5104 | |
b1d1b865 | 5105 | if (desc < 0 && (NILP (append) || errno == ENOENT)) |
570d7624 | 5106 | #ifdef VMS |
5e570b75 | 5107 | if (auto_saving) /* Overwrite any previous version of autosave file */ |
570d7624 | 5108 | { |
5e570b75 | 5109 | vms_truncate (fn); /* if fn exists, truncate to zero length */ |
68c45bf0 | 5110 | desc = emacs_open (fn, O_RDWR, 0); |
570d7624 | 5111 | if (desc < 0) |
561cb8e1 | 5112 | desc = creat_copy_attrs (STRINGP (current_buffer->filename) |
d5db4077 | 5113 | ? SDATA (current_buffer->filename) : 0, |
b72dea2a | 5114 | fn); |
570d7624 | 5115 | } |
5e570b75 | 5116 | else /* Write to temporary name and rename if no errors */ |
570d7624 JB |
5117 | { |
5118 | Lisp_Object temp_name; | |
5119 | temp_name = Ffile_name_directory (filename); | |
5120 | ||
265a9e55 | 5121 | if (!NILP (temp_name)) |
570d7624 JB |
5122 | { |
5123 | temp_name = Fmake_temp_name (concat2 (temp_name, | |
5124 | build_string ("$$SAVE$$"))); | |
d5db4077 KR |
5125 | fname = SDATA (filename); |
5126 | fn = SDATA (temp_name); | |
570d7624 JB |
5127 | desc = creat_copy_attrs (fname, fn); |
5128 | if (desc < 0) | |
5129 | { | |
5130 | /* If we can't open the temporary file, try creating a new | |
5131 | version of the original file. VMS "creat" creates a | |
5132 | new version rather than truncating an existing file. */ | |
5133 | fn = fname; | |
5134 | fname = 0; | |
5135 | desc = creat (fn, 0666); | |
5136 | #if 0 /* This can clobber an existing file and fail to replace it, | |
5137 | if the user runs out of space. */ | |
5138 | if (desc < 0) | |
5139 | { | |
5140 | /* We can't make a new version; | |
5141 | try to truncate and rewrite existing version if any. */ | |
5142 | vms_truncate (fn); | |
68c45bf0 | 5143 | desc = emacs_open (fn, O_RDWR, 0); |
570d7624 JB |
5144 | } |
5145 | #endif | |
5146 | } | |
5147 | } | |
5148 | else | |
5149 | desc = creat (fn, 0666); | |
5150 | } | |
5151 | #else /* not VMS */ | |
5e570b75 | 5152 | #ifdef DOS_NT |
68c45bf0 | 5153 | desc = emacs_open (fn, |
95522746 GM |
5154 | O_WRONLY | O_CREAT | buffer_file_type |
5155 | | (EQ (mustbenew, Qexcl) ? O_EXCL : O_TRUNC), | |
68c45bf0 | 5156 | S_IREAD | S_IWRITE); |
5e570b75 | 5157 | #else /* not DOS_NT */ |
68c45bf0 | 5158 | desc = emacs_open (fn, O_WRONLY | O_TRUNC | O_CREAT |
7c752c80 | 5159 | | (EQ (mustbenew, Qexcl) ? O_EXCL : 0), |
68c45bf0 | 5160 | auto_saving ? auto_save_mode_bits : 0666); |
5e570b75 | 5161 | #endif /* not DOS_NT */ |
570d7624 JB |
5162 | #endif /* not VMS */ |
5163 | ||
5164 | if (desc < 0) | |
5165 | { | |
5166 | #ifdef CLASH_DETECTION | |
5167 | save_errno = errno; | |
7204a979 | 5168 | if (!auto_saving) unlock_file (lockname); |
570d7624 JB |
5169 | errno = save_errno; |
5170 | #endif /* CLASH_DETECTION */ | |
43fb7d9a | 5171 | UNGCPRO; |
570d7624 JB |
5172 | report_file_error ("Opening output file", Fcons (filename, Qnil)); |
5173 | } | |
5174 | ||
5175 | record_unwind_protect (close_file_unwind, make_number (desc)); | |
5176 | ||
c1c4693e | 5177 | if (!NILP (append) && !NILP (Ffile_regular_p (filename))) |
43fb7d9a DL |
5178 | { |
5179 | long ret; | |
efdc16c9 | 5180 | |
43fb7d9a DL |
5181 | if (NUMBERP (append)) |
5182 | ret = lseek (desc, XINT (append), 1); | |
5183 | else | |
5184 | ret = lseek (desc, 0, 2); | |
5185 | if (ret < 0) | |
5186 | { | |
570d7624 | 5187 | #ifdef CLASH_DETECTION |
43fb7d9a | 5188 | if (!auto_saving) unlock_file (lockname); |
570d7624 | 5189 | #endif /* CLASH_DETECTION */ |
43fb7d9a DL |
5190 | UNGCPRO; |
5191 | report_file_error ("Lseek error", Fcons (filename, Qnil)); | |
5192 | } | |
5193 | } | |
efdc16c9 | 5194 | |
43fb7d9a | 5195 | UNGCPRO; |
570d7624 JB |
5196 | |
5197 | #ifdef VMS | |
5198 | /* | |
5199 | * Kludge Warning: The VMS C RTL likes to insert carriage returns | |
5200 | * if we do writes that don't end with a carriage return. Furthermore | |
5201 | * it cannot handle writes of more then 16K. The modified | |
5202 | * version of "sys_write" in SYSDEP.C (see comment there) copes with | |
5203 | * this EXCEPT for the last record (iff it doesn't end with a carriage | |
5204 | * return). This implies that if your buffer doesn't end with a carriage | |
5205 | * return, you get one free... tough. However it also means that if | |
5206 | * we make two calls to sys_write (a la the following code) you can | |
5207 | * get one at the gap as well. The easiest way to fix this (honest) | |
5208 | * is to move the gap to the next newline (or the end of the buffer). | |
5209 | * Thus this change. | |
5210 | * | |
5211 | * Yech! | |
5212 | */ | |
5213 | if (GPT > BEG && GPT_ADDR[-1] != '\n') | |
5214 | move_gap (find_next_newline (GPT, 1)); | |
cdfb0f1d KH |
5215 | #else |
5216 | /* Whether VMS or not, we must move the gap to the next of newline | |
5217 | when we must put designation sequences at beginning of line. */ | |
5218 | if (INTEGERP (start) | |
5219 | && coding.type == coding_type_iso2022 | |
5220 | && coding.flags & CODING_FLAG_ISO_DESIGNATE_AT_BOL | |
5221 | && GPT > BEG && GPT_ADDR[-1] != '\n') | |
ec7adf26 RS |
5222 | { |
5223 | int opoint = PT, opoint_byte = PT_BYTE; | |
5224 | scan_newline (PT, PT_BYTE, ZV, ZV_BYTE, 1, 0); | |
5225 | move_gap_both (PT, PT_BYTE); | |
5226 | SET_PT_BOTH (opoint, opoint_byte); | |
5227 | } | |
570d7624 JB |
5228 | #endif |
5229 | ||
5230 | failure = 0; | |
5231 | immediate_quit = 1; | |
5232 | ||
561cb8e1 | 5233 | if (STRINGP (start)) |
570d7624 | 5234 | { |
d5db4077 | 5235 | failure = 0 > a_write (desc, start, 0, SCHARS (start), |
ce51c54c | 5236 | &annotations, &coding); |
570d7624 JB |
5237 | save_errno = errno; |
5238 | } | |
5239 | else if (XINT (start) != XINT (end)) | |
5240 | { | |
ec7adf26 RS |
5241 | tem = CHAR_TO_BYTE (XINT (start)); |
5242 | ||
570d7624 JB |
5243 | if (XINT (start) < GPT) |
5244 | { | |
ce51c54c KH |
5245 | failure = 0 > a_write (desc, Qnil, XINT (start), |
5246 | min (GPT, XINT (end)) - XINT (start), | |
5247 | &annotations, &coding); | |
570d7624 JB |
5248 | save_errno = errno; |
5249 | } | |
5250 | ||
5251 | if (XINT (end) > GPT && !failure) | |
5252 | { | |
ce51c54c KH |
5253 | tem = max (XINT (start), GPT); |
5254 | failure = 0 > a_write (desc, Qnil, tem , XINT (end) - tem, | |
5255 | &annotations, &coding); | |
d6a3cc15 RS |
5256 | save_errno = errno; |
5257 | } | |
69f6e679 RS |
5258 | } |
5259 | else | |
5260 | { | |
5261 | /* If file was empty, still need to write the annotations */ | |
c8a6d68a | 5262 | coding.mode |= CODING_MODE_LAST_BLOCK; |
ce51c54c | 5263 | failure = 0 > a_write (desc, Qnil, XINT (end), 0, &annotations, &coding); |
6fdaa9a0 KH |
5264 | save_errno = errno; |
5265 | } | |
5266 | ||
c8a6d68a KH |
5267 | if (CODING_REQUIRE_FLUSHING (&coding) |
5268 | && !(coding.mode & CODING_MODE_LAST_BLOCK) | |
1354debd | 5269 | && ! failure) |
6fdaa9a0 KH |
5270 | { |
5271 | /* We have to flush out a data. */ | |
c8a6d68a | 5272 | coding.mode |= CODING_MODE_LAST_BLOCK; |
ce51c54c | 5273 | failure = 0 > e_write (desc, Qnil, 0, 0, &coding); |
69f6e679 | 5274 | save_errno = errno; |
570d7624 JB |
5275 | } |
5276 | ||
5277 | immediate_quit = 0; | |
5278 | ||
6e23c83e | 5279 | #ifdef HAVE_FSYNC |
570d7624 JB |
5280 | /* Note fsync appears to change the modtime on BSD4.2 (both vax and sun). |
5281 | Disk full in NFS may be reported here. */ | |
1daffa1c RS |
5282 | /* mib says that closing the file will try to write as fast as NFS can do |
5283 | it, and that means the fsync here is not crucial for autosave files. */ | |
5284 | if (!auto_saving && fsync (desc) < 0) | |
cb33c142 KH |
5285 | { |
5286 | /* If fsync fails with EINTR, don't treat that as serious. */ | |
5287 | if (errno != EINTR) | |
5288 | failure = 1, save_errno = errno; | |
5289 | } | |
570d7624 JB |
5290 | #endif |
5291 | ||
199607e4 | 5292 | /* Spurious "file has changed on disk" warnings have been |
570d7624 JB |
5293 | observed on Suns as well. |
5294 | It seems that `close' can change the modtime, under nfs. | |
5295 | ||
5296 | (This has supposedly been fixed in Sunos 4, | |
5297 | but who knows about all the other machines with NFS?) */ | |
5298 | #if 0 | |
5299 | ||
5300 | /* On VMS and APOLLO, must do the stat after the close | |
5301 | since closing changes the modtime. */ | |
5302 | #ifndef VMS | |
5303 | #ifndef APOLLO | |
5304 | /* Recall that #if defined does not work on VMS. */ | |
5305 | #define FOO | |
5306 | fstat (desc, &st); | |
5307 | #endif | |
5308 | #endif | |
5309 | #endif | |
5310 | ||
5311 | /* NFS can report a write failure now. */ | |
68c45bf0 | 5312 | if (emacs_close (desc) < 0) |
570d7624 JB |
5313 | failure = 1, save_errno = errno; |
5314 | ||
5315 | #ifdef VMS | |
5316 | /* If we wrote to a temporary name and had no errors, rename to real name. */ | |
5317 | if (fname) | |
5318 | { | |
5319 | if (!failure) | |
5320 | failure = (rename (fn, fname) != 0), save_errno = errno; | |
5321 | fn = fname; | |
5322 | } | |
5323 | #endif /* VMS */ | |
5324 | ||
5325 | #ifndef FOO | |
5326 | stat (fn, &st); | |
5327 | #endif | |
6fc6f94b RS |
5328 | /* Discard the unwind protect for close_file_unwind. */ |
5329 | specpdl_ptr = specpdl + count1; | |
5330 | /* Restore the original current buffer. */ | |
98295b48 | 5331 | visit_file = unbind_to (count, visit_file); |
570d7624 JB |
5332 | |
5333 | #ifdef CLASH_DETECTION | |
5334 | if (!auto_saving) | |
7204a979 | 5335 | unlock_file (lockname); |
570d7624 JB |
5336 | #endif /* CLASH_DETECTION */ |
5337 | ||
5338 | /* Do this before reporting IO error | |
5339 | to avoid a "file has changed on disk" warning on | |
5340 | next attempt to save. */ | |
d6a3cc15 | 5341 | if (visiting) |
570d7624 JB |
5342 | current_buffer->modtime = st.st_mtime; |
5343 | ||
5344 | if (failure) | |
d5db4077 | 5345 | error ("IO error writing %s: %s", SDATA (filename), |
68c45bf0 | 5346 | emacs_strerror (save_errno)); |
570d7624 | 5347 | |
d6a3cc15 | 5348 | if (visiting) |
570d7624 | 5349 | { |
95385625 | 5350 | SAVE_MODIFF = MODIFF; |
2acfd7ae | 5351 | XSETFASTINT (current_buffer->save_length, Z - BEG); |
3b7792ed | 5352 | current_buffer->filename = visit_file; |
f4226e89 | 5353 | update_mode_lines++; |
570d7624 | 5354 | } |
d6a3cc15 | 5355 | else if (quietly) |
dc2628c1 RS |
5356 | { |
5357 | if (auto_saving | |
5358 | && ! NILP (Fstring_equal (current_buffer->filename, | |
5359 | current_buffer->auto_save_file_name))) | |
5360 | SAVE_MODIFF = MODIFF; | |
5361 | ||
5362 | return Qnil; | |
5363 | } | |
570d7624 JB |
5364 | |
5365 | if (!auto_saving) | |
2a6f12e2 | 5366 | message_with_string ((INTEGERP (append) |
0c328a0e RS |
5367 | ? "Updated %s" |
5368 | : ! NILP (append) | |
5369 | ? "Added to %s" | |
5370 | : "Wrote %s"), | |
5371 | visit_file, 1); | |
570d7624 JB |
5372 | |
5373 | return Qnil; | |
5374 | } | |
ec7adf26 | 5375 | \f |
d6a3cc15 RS |
5376 | Lisp_Object merge (); |
5377 | ||
5378 | DEFUN ("car-less-than-car", Fcar_less_than_car, Scar_less_than_car, 2, 2, 0, | |
8c1a1077 PJ |
5379 | doc: /* Return t if (car A) is numerically less than (car B). */) |
5380 | (a, b) | |
d6a3cc15 RS |
5381 | Lisp_Object a, b; |
5382 | { | |
5383 | return Flss (Fcar (a), Fcar (b)); | |
5384 | } | |
5385 | ||
5386 | /* Build the complete list of annotations appropriate for writing out | |
5387 | the text between START and END, by calling all the functions in | |
6fc6f94b RS |
5388 | write-region-annotate-functions and merging the lists they return. |
5389 | If one of these functions switches to a different buffer, we assume | |
5390 | that buffer contains altered text. Therefore, the caller must | |
5391 | make sure to restore the current buffer in all cases, | |
5392 | as save-excursion would do. */ | |
d6a3cc15 RS |
5393 | |
5394 | static Lisp_Object | |
236a12f2 SM |
5395 | build_annotations (start, end) |
5396 | Lisp_Object start, end; | |
d6a3cc15 RS |
5397 | { |
5398 | Lisp_Object annotations; | |
5399 | Lisp_Object p, res; | |
5400 | struct gcpro gcpro1, gcpro2; | |
0a20b684 | 5401 | Lisp_Object original_buffer; |
bd235610 | 5402 | int i, used_global = 0; |
0a20b684 RS |
5403 | |
5404 | XSETBUFFER (original_buffer, current_buffer); | |
d6a3cc15 RS |
5405 | |
5406 | annotations = Qnil; | |
5407 | p = Vwrite_region_annotate_functions; | |
5408 | GCPRO2 (annotations, p); | |
28c3eb5a | 5409 | while (CONSP (p)) |
d6a3cc15 | 5410 | { |
6fc6f94b | 5411 | struct buffer *given_buffer = current_buffer; |
bd235610 SM |
5412 | if (EQ (Qt, XCAR (p)) && !used_global) |
5413 | { /* Use the global value of the hook. */ | |
5414 | Lisp_Object arg[2]; | |
5415 | used_global = 1; | |
5416 | arg[0] = Fdefault_value (Qwrite_region_annotate_functions); | |
5417 | arg[1] = XCDR (p); | |
5418 | p = Fappend (2, arg); | |
5419 | continue; | |
5420 | } | |
6fc6f94b | 5421 | Vwrite_region_annotations_so_far = annotations; |
28c3eb5a | 5422 | res = call2 (XCAR (p), start, end); |
6fc6f94b RS |
5423 | /* If the function makes a different buffer current, |
5424 | assume that means this buffer contains altered text to be output. | |
5425 | Reset START and END from the buffer bounds | |
5426 | and discard all previous annotations because they should have | |
5427 | been dealt with by this function. */ | |
5428 | if (current_buffer != given_buffer) | |
5429 | { | |
3cf29f61 RS |
5430 | XSETFASTINT (start, BEGV); |
5431 | XSETFASTINT (end, ZV); | |
6fc6f94b RS |
5432 | annotations = Qnil; |
5433 | } | |
d6a3cc15 RS |
5434 | Flength (res); /* Check basic validity of return value */ |
5435 | annotations = merge (annotations, res, Qcar_less_than_car); | |
28c3eb5a | 5436 | p = XCDR (p); |
d6a3cc15 | 5437 | } |
0d420e88 BG |
5438 | |
5439 | /* Now do the same for annotation functions implied by the file-format */ | |
f844ba4e LT |
5440 | if (auto_saving && (!EQ (current_buffer->auto_save_file_format, Qt))) |
5441 | p = current_buffer->auto_save_file_format; | |
0d420e88 BG |
5442 | else |
5443 | p = current_buffer->file_format; | |
28c3eb5a | 5444 | for (i = 0; CONSP (p); p = XCDR (p), ++i) |
0d420e88 BG |
5445 | { |
5446 | struct buffer *given_buffer = current_buffer; | |
efdc16c9 | 5447 | |
0d420e88 | 5448 | Vwrite_region_annotations_so_far = annotations; |
532ed661 GM |
5449 | |
5450 | /* Value is either a list of annotations or nil if the function | |
5451 | has written annotations to a temporary buffer, which is now | |
5452 | current. */ | |
28c3eb5a | 5453 | res = call5 (Qformat_annotate_function, XCAR (p), start, end, |
532ed661 | 5454 | original_buffer, make_number (i)); |
0d420e88 BG |
5455 | if (current_buffer != given_buffer) |
5456 | { | |
3cf29f61 RS |
5457 | XSETFASTINT (start, BEGV); |
5458 | XSETFASTINT (end, ZV); | |
0d420e88 BG |
5459 | annotations = Qnil; |
5460 | } | |
efdc16c9 | 5461 | |
532ed661 GM |
5462 | if (CONSP (res)) |
5463 | annotations = merge (annotations, res, Qcar_less_than_car); | |
0d420e88 | 5464 | } |
6fdaa9a0 | 5465 | |
236a12f2 SM |
5466 | UNGCPRO; |
5467 | return annotations; | |
5468 | } | |
5469 | ||
5470 | static Lisp_Object | |
5471 | build_annotations_2 (start, end, pre_write_conversion, annotations) | |
5472 | Lisp_Object start, end, pre_write_conversion, annotations; | |
5473 | { | |
5474 | struct gcpro gcpro1; | |
5475 | Lisp_Object res; | |
5476 | ||
5477 | GCPRO1 (annotations); | |
6fdaa9a0 KH |
5478 | /* At last, do the same for the function PRE_WRITE_CONVERSION |
5479 | implied by the current coding-system. */ | |
5480 | if (!NILP (pre_write_conversion)) | |
5481 | { | |
5482 | struct buffer *given_buffer = current_buffer; | |
5483 | Vwrite_region_annotations_so_far = annotations; | |
5484 | res = call2 (pre_write_conversion, start, end); | |
6fdaa9a0 | 5485 | Flength (res); |
cdfb0f1d KH |
5486 | annotations = (current_buffer != given_buffer |
5487 | ? res | |
5488 | : merge (annotations, res, Qcar_less_than_car)); | |
6fdaa9a0 KH |
5489 | } |
5490 | ||
d6a3cc15 RS |
5491 | UNGCPRO; |
5492 | return annotations; | |
5493 | } | |
ec7adf26 | 5494 | \f |
ce51c54c KH |
5495 | /* Write to descriptor DESC the NCHARS chars starting at POS of STRING. |
5496 | If STRING is nil, POS is the character position in the current buffer. | |
d6a3cc15 | 5497 | Intersperse with them the annotations from *ANNOT |
ce51c54c | 5498 | which fall within the range of POS to POS + NCHARS, |
d6a3cc15 RS |
5499 | each at its appropriate position. |
5500 | ||
ec7adf26 RS |
5501 | We modify *ANNOT by discarding elements as we use them up. |
5502 | ||
d6a3cc15 RS |
5503 | The return value is negative in case of system call failure. */ |
5504 | ||
ec7adf26 | 5505 | static int |
ce51c54c | 5506 | a_write (desc, string, pos, nchars, annot, coding) |
d6a3cc15 | 5507 | int desc; |
ce51c54c KH |
5508 | Lisp_Object string; |
5509 | register int nchars; | |
5510 | int pos; | |
d6a3cc15 | 5511 | Lisp_Object *annot; |
6fdaa9a0 | 5512 | struct coding_system *coding; |
d6a3cc15 RS |
5513 | { |
5514 | Lisp_Object tem; | |
5515 | int nextpos; | |
ce51c54c | 5516 | int lastpos = pos + nchars; |
d6a3cc15 | 5517 | |
eb15aa18 | 5518 | while (NILP (*annot) || CONSP (*annot)) |
d6a3cc15 RS |
5519 | { |
5520 | tem = Fcar_safe (Fcar (*annot)); | |
ce51c54c | 5521 | nextpos = pos - 1; |
ec7adf26 | 5522 | if (INTEGERP (tem)) |
ce51c54c | 5523 | nextpos = XFASTINT (tem); |
ec7adf26 RS |
5524 | |
5525 | /* If there are no more annotations in this range, | |
5526 | output the rest of the range all at once. */ | |
ce51c54c KH |
5527 | if (! (nextpos >= pos && nextpos <= lastpos)) |
5528 | return e_write (desc, string, pos, lastpos, coding); | |
ec7adf26 RS |
5529 | |
5530 | /* Output buffer text up to the next annotation's position. */ | |
ce51c54c | 5531 | if (nextpos > pos) |
d6a3cc15 | 5532 | { |
055a28c9 | 5533 | if (0 > e_write (desc, string, pos, nextpos, coding)) |
d6a3cc15 | 5534 | return -1; |
ce51c54c | 5535 | pos = nextpos; |
d6a3cc15 | 5536 | } |
ec7adf26 | 5537 | /* Output the annotation. */ |
d6a3cc15 RS |
5538 | tem = Fcdr (Fcar (*annot)); |
5539 | if (STRINGP (tem)) | |
5540 | { | |
d5db4077 | 5541 | if (0 > e_write (desc, tem, 0, SCHARS (tem), coding)) |
d6a3cc15 RS |
5542 | return -1; |
5543 | } | |
5544 | *annot = Fcdr (*annot); | |
5545 | } | |
dfcf069d | 5546 | return 0; |
d6a3cc15 RS |
5547 | } |
5548 | ||
6fdaa9a0 KH |
5549 | #ifndef WRITE_BUF_SIZE |
5550 | #define WRITE_BUF_SIZE (16 * 1024) | |
5551 | #endif | |
5552 | ||
ce51c54c KH |
5553 | /* Write text in the range START and END into descriptor DESC, |
5554 | encoding them with coding system CODING. If STRING is nil, START | |
5555 | and END are character positions of the current buffer, else they | |
5556 | are indexes to the string STRING. */ | |
ec7adf26 RS |
5557 | |
5558 | static int | |
ce51c54c | 5559 | e_write (desc, string, start, end, coding) |
570d7624 | 5560 | int desc; |
ce51c54c KH |
5561 | Lisp_Object string; |
5562 | int start, end; | |
6fdaa9a0 | 5563 | struct coding_system *coding; |
570d7624 | 5564 | { |
ce51c54c KH |
5565 | register char *addr; |
5566 | register int nbytes; | |
6fdaa9a0 | 5567 | char buf[WRITE_BUF_SIZE]; |
ce51c54c KH |
5568 | int return_val = 0; |
5569 | ||
5570 | if (start >= end) | |
5571 | coding->composing = COMPOSITION_DISABLED; | |
5572 | if (coding->composing != COMPOSITION_DISABLED) | |
5573 | coding_save_composition (coding, start, end, string); | |
5574 | ||
5575 | if (STRINGP (string)) | |
5576 | { | |
d5db4077 KR |
5577 | addr = SDATA (string); |
5578 | nbytes = SBYTES (string); | |
8c3b9441 | 5579 | coding->src_multibyte = STRING_MULTIBYTE (string); |
ce51c54c KH |
5580 | } |
5581 | else if (start < end) | |
5582 | { | |
5583 | /* It is assured that the gap is not in the range START and END-1. */ | |
5584 | addr = CHAR_POS_ADDR (start); | |
5585 | nbytes = CHAR_TO_BYTE (end) - CHAR_TO_BYTE (start); | |
8c3b9441 KH |
5586 | coding->src_multibyte |
5587 | = !NILP (current_buffer->enable_multibyte_characters); | |
ce51c54c KH |
5588 | } |
5589 | else | |
5590 | { | |
5591 | addr = ""; | |
5592 | nbytes = 0; | |
8c3b9441 | 5593 | coding->src_multibyte = 1; |
ce51c54c | 5594 | } |
570d7624 | 5595 | |
6fdaa9a0 KH |
5596 | /* We used to have a code for handling selective display here. But, |
5597 | now it is handled within encode_coding. */ | |
5598 | while (1) | |
570d7624 | 5599 | { |
b4132433 KH |
5600 | int result; |
5601 | ||
5602 | result = encode_coding (coding, addr, buf, nbytes, WRITE_BUF_SIZE); | |
c8a6d68a | 5603 | if (coding->produced > 0) |
6fdaa9a0 | 5604 | { |
68c45bf0 | 5605 | coding->produced -= emacs_write (desc, buf, coding->produced); |
ce51c54c KH |
5606 | if (coding->produced) |
5607 | { | |
5608 | return_val = -1; | |
5609 | break; | |
5610 | } | |
570d7624 | 5611 | } |
ca91fb26 KH |
5612 | nbytes -= coding->consumed; |
5613 | addr += coding->consumed; | |
5614 | if (result == CODING_FINISH_INSUFFICIENT_SRC | |
5615 | && nbytes > 0) | |
b4132433 KH |
5616 | { |
5617 | /* The source text ends by an incomplete multibyte form. | |
5618 | There's no way other than write it out as is. */ | |
68c45bf0 | 5619 | nbytes -= emacs_write (desc, addr, nbytes); |
ce51c54c KH |
5620 | if (nbytes) |
5621 | { | |
5622 | return_val = -1; | |
5623 | break; | |
5624 | } | |
b4132433 | 5625 | } |
ec7adf26 | 5626 | if (nbytes <= 0) |
6fdaa9a0 | 5627 | break; |
ce51c54c KH |
5628 | start += coding->consumed_char; |
5629 | if (coding->cmp_data) | |
5630 | coding_adjust_composition_offset (coding, start); | |
570d7624 | 5631 | } |
0c41a39c KH |
5632 | |
5633 | if (coding->cmp_data) | |
5634 | coding_free_composition_data (coding); | |
5635 | ||
055a28c9 | 5636 | return return_val; |
570d7624 | 5637 | } |
ec7adf26 | 5638 | \f |
570d7624 | 5639 | DEFUN ("verify-visited-file-modtime", Fverify_visited_file_modtime, |
8c1a1077 PJ |
5640 | Sverify_visited_file_modtime, 1, 1, 0, |
5641 | doc: /* Return t if last mod time of BUF's visited file matches what BUF records. | |
d01ca4a8 LT |
5642 | This means that the file has not been changed since it was visited or saved. |
5643 | See Info node `(elisp)Modification Time' for more details. */) | |
8c1a1077 | 5644 | (buf) |
570d7624 JB |
5645 | Lisp_Object buf; |
5646 | { | |
5647 | struct buffer *b; | |
5648 | struct stat st; | |
32f4334d | 5649 | Lisp_Object handler; |
b1d1b865 | 5650 | Lisp_Object filename; |
570d7624 | 5651 | |
b7826503 | 5652 | CHECK_BUFFER (buf); |
570d7624 JB |
5653 | b = XBUFFER (buf); |
5654 | ||
93c30b5f | 5655 | if (!STRINGP (b->filename)) return Qt; |
570d7624 JB |
5656 | if (b->modtime == 0) return Qt; |
5657 | ||
32f4334d RS |
5658 | /* If the file name has special constructs in it, |
5659 | call the corresponding file handler. */ | |
49307295 KH |
5660 | handler = Ffind_file_name_handler (b->filename, |
5661 | Qverify_visited_file_modtime); | |
32f4334d | 5662 | if (!NILP (handler)) |
09121adc | 5663 | return call2 (handler, Qverify_visited_file_modtime, buf); |
32f4334d | 5664 | |
b1d1b865 RS |
5665 | filename = ENCODE_FILE (b->filename); |
5666 | ||
d5db4077 | 5667 | if (stat (SDATA (filename), &st) < 0) |
570d7624 JB |
5668 | { |
5669 | /* If the file doesn't exist now and didn't exist before, | |
5670 | we say that it isn't modified, provided the error is a tame one. */ | |
5671 | if (errno == ENOENT || errno == EACCES || errno == ENOTDIR) | |
5672 | st.st_mtime = -1; | |
5673 | else | |
5674 | st.st_mtime = 0; | |
5675 | } | |
5676 | if (st.st_mtime == b->modtime | |
5677 | /* If both are positive, accept them if they are off by one second. */ | |
5678 | || (st.st_mtime > 0 && b->modtime > 0 | |
5679 | && (st.st_mtime == b->modtime + 1 | |
5680 | || st.st_mtime == b->modtime - 1))) | |
5681 | return Qt; | |
5682 | return Qnil; | |
5683 | } | |
5684 | ||
5685 | DEFUN ("clear-visited-file-modtime", Fclear_visited_file_modtime, | |
8c1a1077 PJ |
5686 | Sclear_visited_file_modtime, 0, 0, 0, |
5687 | doc: /* Clear out records of last mod time of visited file. | |
5688 | Next attempt to save will certainly not complain of a discrepancy. */) | |
5689 | () | |
570d7624 JB |
5690 | { |
5691 | current_buffer->modtime = 0; | |
5692 | return Qnil; | |
5693 | } | |
5694 | ||
f5d5eccf | 5695 | DEFUN ("visited-file-modtime", Fvisited_file_modtime, |
8c1a1077 PJ |
5696 | Svisited_file_modtime, 0, 0, 0, |
5697 | doc: /* Return the current buffer's recorded visited file modification time. | |
e5fcddc8 | 5698 | The value is a list of the form (HIGH LOW), like the time values |
d01ca4a8 LT |
5699 | that `file-attributes' returns. If the current buffer has no recorded |
5700 | file modification time, this function returns 0. | |
5701 | See Info node `(elisp)Modification Time' for more details. */) | |
8c1a1077 | 5702 | () |
f5d5eccf | 5703 | { |
e5fcddc8 LT |
5704 | Lisp_Object tcons; |
5705 | tcons = long_to_cons ((unsigned long) current_buffer->modtime); | |
5706 | if (CONSP (tcons)) | |
5707 | return list2 (XCAR (tcons), XCDR (tcons)); | |
5708 | return tcons; | |
f5d5eccf RS |
5709 | } |
5710 | ||
570d7624 | 5711 | DEFUN ("set-visited-file-modtime", Fset_visited_file_modtime, |
8c1a1077 PJ |
5712 | Sset_visited_file_modtime, 0, 1, 0, |
5713 | doc: /* Update buffer's recorded modification time from the visited file's time. | |
5714 | Useful if the buffer was not read from the file normally | |
5715 | or if the file itself has been changed for some known benign reason. | |
5716 | An argument specifies the modification time value to use | |
5717 | \(instead of that of the visited file), in the form of a list | |
5718 | \(HIGH . LOW) or (HIGH LOW). */) | |
5719 | (time_list) | |
f5d5eccf | 5720 | Lisp_Object time_list; |
570d7624 | 5721 | { |
f5d5eccf RS |
5722 | if (!NILP (time_list)) |
5723 | current_buffer->modtime = cons_to_long (time_list); | |
5724 | else | |
5725 | { | |
5726 | register Lisp_Object filename; | |
5727 | struct stat st; | |
5728 | Lisp_Object handler; | |
570d7624 | 5729 | |
f5d5eccf | 5730 | filename = Fexpand_file_name (current_buffer->filename, Qnil); |
32f4334d | 5731 | |
f5d5eccf RS |
5732 | /* If the file name has special constructs in it, |
5733 | call the corresponding file handler. */ | |
49307295 | 5734 | handler = Ffind_file_name_handler (filename, Qset_visited_file_modtime); |
f5d5eccf | 5735 | if (!NILP (handler)) |
caf3c431 | 5736 | /* The handler can find the file name the same way we did. */ |
76c881b0 | 5737 | return call2 (handler, Qset_visited_file_modtime, Qnil); |
b1d1b865 RS |
5738 | |
5739 | filename = ENCODE_FILE (filename); | |
5740 | ||
d5db4077 | 5741 | if (stat (SDATA (filename), &st) >= 0) |
f5d5eccf RS |
5742 | current_buffer->modtime = st.st_mtime; |
5743 | } | |
570d7624 JB |
5744 | |
5745 | return Qnil; | |
5746 | } | |
5747 | \f | |
5748 | Lisp_Object | |
d7f31e22 GM |
5749 | auto_save_error (error) |
5750 | Lisp_Object error; | |
570d7624 | 5751 | { |
d7f31e22 GM |
5752 | Lisp_Object args[3], msg; |
5753 | int i, nbytes; | |
5754 | struct gcpro gcpro1; | |
efdc16c9 | 5755 | |
570d7624 | 5756 | ring_bell (); |
efdc16c9 | 5757 | |
d7f31e22 GM |
5758 | args[0] = build_string ("Auto-saving %s: %s"); |
5759 | args[1] = current_buffer->name; | |
5760 | args[2] = Ferror_message_string (error); | |
5761 | msg = Fformat (3, args); | |
5762 | GCPRO1 (msg); | |
d5db4077 | 5763 | nbytes = SBYTES (msg); |
d7f31e22 GM |
5764 | |
5765 | for (i = 0; i < 3; ++i) | |
5766 | { | |
5767 | if (i == 0) | |
d5db4077 | 5768 | message2 (SDATA (msg), nbytes, STRING_MULTIBYTE (msg)); |
d7f31e22 | 5769 | else |
d5db4077 | 5770 | message2_nolog (SDATA (msg), nbytes, STRING_MULTIBYTE (msg)); |
d7f31e22 GM |
5771 | Fsleep_for (make_number (1), Qnil); |
5772 | } | |
5773 | ||
5774 | UNGCPRO; | |
570d7624 JB |
5775 | return Qnil; |
5776 | } | |
5777 | ||
5778 | Lisp_Object | |
5779 | auto_save_1 () | |
5780 | { | |
570d7624 | 5781 | struct stat st; |
d4a42098 KS |
5782 | Lisp_Object modes; |
5783 | ||
5784 | auto_save_mode_bits = 0666; | |
570d7624 JB |
5785 | |
5786 | /* Get visited file's mode to become the auto save file's mode. */ | |
d4a42098 KS |
5787 | if (! NILP (current_buffer->filename)) |
5788 | { | |
5789 | if (stat (SDATA (current_buffer->filename), &st) >= 0) | |
5790 | /* But make sure we can overwrite it later! */ | |
5791 | auto_save_mode_bits = st.st_mode | 0600; | |
5792 | else if ((modes = Ffile_modes (current_buffer->filename), | |
5793 | INTEGERP (modes))) | |
5794 | /* Remote files don't cooperate with stat. */ | |
5795 | auto_save_mode_bits = XINT (modes) | 0600; | |
5796 | } | |
570d7624 JB |
5797 | |
5798 | return | |
5799 | Fwrite_region (Qnil, Qnil, | |
5800 | current_buffer->auto_save_file_name, | |
de1d0127 | 5801 | Qnil, Qlambda, Qnil, Qnil); |
570d7624 JB |
5802 | } |
5803 | ||
e54d3b5d | 5804 | static Lisp_Object |
1b335d29 RS |
5805 | do_auto_save_unwind (stream) /* used as unwind-protect function */ |
5806 | Lisp_Object stream; | |
e54d3b5d | 5807 | { |
3be3c08e | 5808 | auto_saving = 0; |
1b335d29 | 5809 | if (!NILP (stream)) |
03699b14 KR |
5810 | fclose ((FILE *) (XFASTINT (XCAR (stream)) << 16 |
5811 | | XFASTINT (XCDR (stream)))); | |
e54d3b5d RS |
5812 | return Qnil; |
5813 | } | |
5814 | ||
a8c828be RS |
5815 | static Lisp_Object |
5816 | do_auto_save_unwind_1 (value) /* used as unwind-protect function */ | |
5817 | Lisp_Object value; | |
5818 | { | |
5819 | minibuffer_auto_raise = XINT (value); | |
5820 | return Qnil; | |
5821 | } | |
5822 | ||
5794dd61 RS |
5823 | static Lisp_Object |
5824 | do_auto_save_make_dir (dir) | |
5825 | Lisp_Object dir; | |
5826 | { | |
5827 | return call2 (Qmake_directory, dir, Qt); | |
5828 | } | |
5829 | ||
5830 | static Lisp_Object | |
5831 | do_auto_save_eh (ignore) | |
5832 | Lisp_Object ignore; | |
5833 | { | |
5834 | return Qnil; | |
5835 | } | |
5836 | ||
570d7624 | 5837 | DEFUN ("do-auto-save", Fdo_auto_save, Sdo_auto_save, 0, 2, "", |
8c1a1077 PJ |
5838 | doc: /* Auto-save all buffers that need it. |
5839 | This is all buffers that have auto-saving enabled | |
5840 | and are changed since last auto-saved. | |
5841 | Auto-saving writes the buffer into a file | |
5842 | so that your editing is not lost if the system crashes. | |
5843 | This file is not the file you visited; that changes only when you save. | |
5844 | Normally we run the normal hook `auto-save-hook' before saving. | |
5845 | ||
5846 | A non-nil NO-MESSAGE argument means do not print any message if successful. | |
5847 | A non-nil CURRENT-ONLY argument means save only current buffer. */) | |
5848 | (no_message, current_only) | |
17857782 | 5849 | Lisp_Object no_message, current_only; |
570d7624 JB |
5850 | { |
5851 | struct buffer *old = current_buffer, *b; | |
5852 | Lisp_Object tail, buf; | |
5853 | int auto_saved = 0; | |
f14b1c68 | 5854 | int do_handled_files; |
ff4c9993 | 5855 | Lisp_Object oquit; |
1b335d29 RS |
5856 | FILE *stream; |
5857 | Lisp_Object lispstream; | |
aed13378 | 5858 | int count = SPECPDL_INDEX (); |
a8c828be | 5859 | int orig_minibuffer_auto_raise = minibuffer_auto_raise; |
5794dd61 | 5860 | int old_message_p = 0; |
d57563b6 | 5861 | struct gcpro gcpro1, gcpro2; |
38da540d RS |
5862 | |
5863 | if (max_specpdl_size < specpdl_size + 40) | |
5864 | max_specpdl_size = specpdl_size + 40; | |
5865 | ||
5866 | if (minibuf_level) | |
5867 | no_message = Qt; | |
5868 | ||
5794dd61 RS |
5869 | if (NILP (no_message)) |
5870 | { | |
5871 | old_message_p = push_message (); | |
5872 | record_unwind_protect (pop_message_unwind, Qnil); | |
5873 | } | |
efdc16c9 | 5874 | |
ff4c9993 RS |
5875 | /* Ordinarily don't quit within this function, |
5876 | but don't make it impossible to quit (in case we get hung in I/O). */ | |
5877 | oquit = Vquit_flag; | |
5878 | Vquit_flag = Qnil; | |
570d7624 JB |
5879 | |
5880 | /* No GCPRO needed, because (when it matters) all Lisp_Object variables | |
5881 | point to non-strings reached from Vbuffer_alist. */ | |
5882 | ||
265a9e55 | 5883 | if (!NILP (Vrun_hooks)) |
570d7624 JB |
5884 | call1 (Vrun_hooks, intern ("auto-save-hook")); |
5885 | ||
e54d3b5d RS |
5886 | if (STRINGP (Vauto_save_list_file_name)) |
5887 | { | |
0894672f | 5888 | Lisp_Object listfile; |
efdc16c9 | 5889 | |
258fd2cb | 5890 | listfile = Fexpand_file_name (Vauto_save_list_file_name, Qnil); |
0894672f GM |
5891 | |
5892 | /* Don't try to create the directory when shutting down Emacs, | |
5893 | because creating the directory might signal an error, and | |
5894 | that would leave Emacs in a strange state. */ | |
5895 | if (!NILP (Vrun_hooks)) | |
5896 | { | |
5897 | Lisp_Object dir; | |
d57563b6 RS |
5898 | dir = Qnil; |
5899 | GCPRO2 (dir, listfile); | |
0894672f GM |
5900 | dir = Ffile_name_directory (listfile); |
5901 | if (NILP (Ffile_directory_p (dir))) | |
5794dd61 RS |
5902 | internal_condition_case_1 (do_auto_save_make_dir, |
5903 | dir, Fcons (Fcons (Qfile_error, Qnil), Qnil), | |
5904 | do_auto_save_eh); | |
d57563b6 | 5905 | UNGCPRO; |
0894672f | 5906 | } |
efdc16c9 | 5907 | |
d5db4077 | 5908 | stream = fopen (SDATA (listfile), "w"); |
0eff1f85 RS |
5909 | if (stream != NULL) |
5910 | { | |
5911 | /* Arrange to close that file whether or not we get an error. | |
5912 | Also reset auto_saving to 0. */ | |
5913 | lispstream = Fcons (Qnil, Qnil); | |
f3fbd155 KR |
5914 | XSETCARFASTINT (lispstream, (EMACS_UINT)stream >> 16); |
5915 | XSETCDRFASTINT (lispstream, (EMACS_UINT)stream & 0xffff); | |
0eff1f85 RS |
5916 | } |
5917 | else | |
5918 | lispstream = Qnil; | |
e54d3b5d RS |
5919 | } |
5920 | else | |
1b335d29 RS |
5921 | { |
5922 | stream = NULL; | |
5923 | lispstream = Qnil; | |
5924 | } | |
199607e4 | 5925 | |
1b335d29 | 5926 | record_unwind_protect (do_auto_save_unwind, lispstream); |
a8c828be RS |
5927 | record_unwind_protect (do_auto_save_unwind_1, |
5928 | make_number (minibuffer_auto_raise)); | |
5929 | minibuffer_auto_raise = 0; | |
3be3c08e RS |
5930 | auto_saving = 1; |
5931 | ||
dc2628c1 RS |
5932 | /* On first pass, save all files that don't have handlers. |
5933 | On second pass, save all files that do have handlers. | |
5934 | ||
5935 | If Emacs is crashing, the handlers may tweak what is causing | |
5936 | Emacs to crash in the first place, and it would be a shame if | |
5937 | Emacs failed to autosave perfectly ordinary files because it | |
5938 | couldn't handle some ange-ftp'd file. */ | |
5939 | ||
f14b1c68 | 5940 | for (do_handled_files = 0; do_handled_files < 2; do_handled_files++) |
03699b14 | 5941 | for (tail = Vbuffer_alist; GC_CONSP (tail); tail = XCDR (tail)) |
f14b1c68 | 5942 | { |
03699b14 | 5943 | buf = XCDR (XCAR (tail)); |
f14b1c68 | 5944 | b = XBUFFER (buf); |
199607e4 | 5945 | |
e54d3b5d | 5946 | /* Record all the buffers that have auto save mode |
258fd2cb RS |
5947 | in the special file that lists them. For each of these buffers, |
5948 | Record visited name (if any) and auto save name. */ | |
93c30b5f | 5949 | if (STRINGP (b->auto_save_file_name) |
1b335d29 | 5950 | && stream != NULL && do_handled_files == 0) |
e54d3b5d | 5951 | { |
258fd2cb RS |
5952 | if (!NILP (b->filename)) |
5953 | { | |
d5db4077 KR |
5954 | fwrite (SDATA (b->filename), 1, |
5955 | SBYTES (b->filename), stream); | |
258fd2cb | 5956 | } |
1b335d29 | 5957 | putc ('\n', stream); |
d5db4077 KR |
5958 | fwrite (SDATA (b->auto_save_file_name), 1, |
5959 | SBYTES (b->auto_save_file_name), stream); | |
1b335d29 | 5960 | putc ('\n', stream); |
e54d3b5d | 5961 | } |
17857782 | 5962 | |
f14b1c68 JB |
5963 | if (!NILP (current_only) |
5964 | && b != current_buffer) | |
5965 | continue; | |
e54d3b5d | 5966 | |
95385625 RS |
5967 | /* Don't auto-save indirect buffers. |
5968 | The base buffer takes care of it. */ | |
5969 | if (b->base_buffer) | |
5970 | continue; | |
5971 | ||
f14b1c68 JB |
5972 | /* Check for auto save enabled |
5973 | and file changed since last auto save | |
5974 | and file changed since last real save. */ | |
93c30b5f | 5975 | if (STRINGP (b->auto_save_file_name) |
95385625 | 5976 | && BUF_SAVE_MODIFF (b) < BUF_MODIFF (b) |
f14b1c68 | 5977 | && b->auto_save_modified < BUF_MODIFF (b) |
82c2d839 RS |
5978 | /* -1 means we've turned off autosaving for a while--see below. */ |
5979 | && XINT (b->save_length) >= 0 | |
f14b1c68 | 5980 | && (do_handled_files |
49307295 KH |
5981 | || NILP (Ffind_file_name_handler (b->auto_save_file_name, |
5982 | Qwrite_region)))) | |
f14b1c68 | 5983 | { |
b60247d9 RS |
5984 | EMACS_TIME before_time, after_time; |
5985 | ||
5986 | EMACS_GET_TIME (before_time); | |
5987 | ||
5988 | /* If we had a failure, don't try again for 20 minutes. */ | |
5989 | if (b->auto_save_failure_time >= 0 | |
5990 | && EMACS_SECS (before_time) - b->auto_save_failure_time < 1200) | |
5991 | continue; | |
5992 | ||
f14b1c68 JB |
5993 | if ((XFASTINT (b->save_length) * 10 |
5994 | > (BUF_Z (b) - BUF_BEG (b)) * 13) | |
5995 | /* A short file is likely to change a large fraction; | |
5996 | spare the user annoying messages. */ | |
5997 | && XFASTINT (b->save_length) > 5000 | |
5998 | /* These messages are frequent and annoying for `*mail*'. */ | |
5999 | && !EQ (b->filename, Qnil) | |
6000 | && NILP (no_message)) | |
6001 | { | |
6002 | /* It has shrunk too much; turn off auto-saving here. */ | |
a8c828be | 6003 | minibuffer_auto_raise = orig_minibuffer_auto_raise; |
fd91d0d4 | 6004 | message_with_string ("Buffer %s has shrunk a lot; auto save disabled in that buffer until next real save", |
60d67b83 | 6005 | b->name, 1); |
a8c828be | 6006 | minibuffer_auto_raise = 0; |
82c2d839 RS |
6007 | /* Turn off auto-saving until there's a real save, |
6008 | and prevent any more warnings. */ | |
46283abe | 6009 | XSETINT (b->save_length, -1); |
f14b1c68 JB |
6010 | Fsleep_for (make_number (1), Qnil); |
6011 | continue; | |
6012 | } | |
6013 | set_buffer_internal (b); | |
6014 | if (!auto_saved && NILP (no_message)) | |
6015 | message1 ("Auto-saving..."); | |
6016 | internal_condition_case (auto_save_1, Qt, auto_save_error); | |
6017 | auto_saved++; | |
6018 | b->auto_save_modified = BUF_MODIFF (b); | |
2acfd7ae | 6019 | XSETFASTINT (current_buffer->save_length, Z - BEG); |
f14b1c68 | 6020 | set_buffer_internal (old); |
b60247d9 RS |
6021 | |
6022 | EMACS_GET_TIME (after_time); | |
6023 | ||
6024 | /* If auto-save took more than 60 seconds, | |
6025 | assume it was an NFS failure that got a timeout. */ | |
6026 | if (EMACS_SECS (after_time) - EMACS_SECS (before_time) > 60) | |
6027 | b->auto_save_failure_time = EMACS_SECS (after_time); | |
f14b1c68 JB |
6028 | } |
6029 | } | |
570d7624 | 6030 | |
b67f2ca5 RS |
6031 | /* Prevent another auto save till enough input events come in. */ |
6032 | record_auto_save (); | |
570d7624 | 6033 | |
17857782 | 6034 | if (auto_saved && NILP (no_message)) |
f05b275b | 6035 | { |
5794dd61 | 6036 | if (old_message_p) |
31f3d831 | 6037 | { |
5794dd61 RS |
6038 | /* If we are going to restore an old message, |
6039 | give time to read ours. */ | |
22e59fa7 | 6040 | sit_for (1, 0, 0, 0, 0); |
c71106e5 | 6041 | restore_message (); |
31f3d831 | 6042 | } |
f05b275b | 6043 | else |
5794dd61 RS |
6044 | /* If we displayed a message and then restored a state |
6045 | with no message, leave a "done" message on the screen. */ | |
f05b275b KH |
6046 | message1 ("Auto-saving...done"); |
6047 | } | |
570d7624 | 6048 | |
ff4c9993 RS |
6049 | Vquit_flag = oquit; |
6050 | ||
5794dd61 | 6051 | /* This restores the message-stack status. */ |
e54d3b5d | 6052 | unbind_to (count, Qnil); |
570d7624 JB |
6053 | return Qnil; |
6054 | } | |
6055 | ||
6056 | DEFUN ("set-buffer-auto-saved", Fset_buffer_auto_saved, | |
8c1a1077 PJ |
6057 | Sset_buffer_auto_saved, 0, 0, 0, |
6058 | doc: /* Mark current buffer as auto-saved with its current text. | |
6059 | No auto-save file will be written until the buffer changes again. */) | |
6060 | () | |
570d7624 JB |
6061 | { |
6062 | current_buffer->auto_save_modified = MODIFF; | |
2acfd7ae | 6063 | XSETFASTINT (current_buffer->save_length, Z - BEG); |
b60247d9 RS |
6064 | current_buffer->auto_save_failure_time = -1; |
6065 | return Qnil; | |
6066 | } | |
6067 | ||
6068 | DEFUN ("clear-buffer-auto-save-failure", Fclear_buffer_auto_save_failure, | |
8c1a1077 PJ |
6069 | Sclear_buffer_auto_save_failure, 0, 0, 0, |
6070 | doc: /* Clear any record of a recent auto-save failure in the current buffer. */) | |
6071 | () | |
b60247d9 RS |
6072 | { |
6073 | current_buffer->auto_save_failure_time = -1; | |
570d7624 JB |
6074 | return Qnil; |
6075 | } | |
6076 | ||
6077 | DEFUN ("recent-auto-save-p", Frecent_auto_save_p, Srecent_auto_save_p, | |
8c1a1077 | 6078 | 0, 0, 0, |
68780e2a RS |
6079 | doc: /* Return t if current buffer has been auto-saved recently. |
6080 | More precisely, if it has been auto-saved since last read from or saved | |
6081 | in the visited file. If the buffer has no visited file, | |
6082 | then any auto-save counts as "recent". */) | |
8c1a1077 | 6083 | () |
570d7624 | 6084 | { |
95385625 | 6085 | return (SAVE_MODIFF < current_buffer->auto_save_modified) ? Qt : Qnil; |
570d7624 JB |
6086 | } |
6087 | \f | |
6088 | /* Reading and completing file names */ | |
6089 | extern Lisp_Object Ffile_name_completion (), Ffile_name_all_completions (); | |
6090 | ||
6e710ae5 RS |
6091 | /* In the string VAL, change each $ to $$ and return the result. */ |
6092 | ||
6093 | static Lisp_Object | |
6094 | double_dollars (val) | |
6095 | Lisp_Object val; | |
6096 | { | |
19290c65 KR |
6097 | register const unsigned char *old; |
6098 | register unsigned char *new; | |
6e710ae5 RS |
6099 | register int n; |
6100 | int osize, count; | |
6101 | ||
d5db4077 | 6102 | osize = SBYTES (val); |
60d67b83 RS |
6103 | |
6104 | /* Count the number of $ characters. */ | |
d5db4077 | 6105 | for (n = osize, count = 0, old = SDATA (val); n > 0; n--) |
6e710ae5 RS |
6106 | if (*old++ == '$') count++; |
6107 | if (count > 0) | |
6108 | { | |
d5db4077 KR |
6109 | old = SDATA (val); |
6110 | val = make_uninit_multibyte_string (SCHARS (val) + count, | |
60d67b83 | 6111 | osize + count); |
d5db4077 | 6112 | new = SDATA (val); |
6e710ae5 RS |
6113 | for (n = osize; n > 0; n--) |
6114 | if (*old != '$') | |
6115 | *new++ = *old++; | |
6116 | else | |
6117 | { | |
6118 | *new++ = '$'; | |
6119 | *new++ = '$'; | |
6120 | old++; | |
6121 | } | |
6122 | } | |
6123 | return val; | |
6124 | } | |
6125 | ||
59ffe07d KS |
6126 | static Lisp_Object |
6127 | read_file_name_cleanup (arg) | |
6128 | Lisp_Object arg; | |
6129 | { | |
c4174fbb | 6130 | return (current_buffer->directory = arg); |
59ffe07d KS |
6131 | } |
6132 | ||
570d7624 | 6133 | DEFUN ("read-file-name-internal", Fread_file_name_internal, Sread_file_name_internal, |
8c1a1077 PJ |
6134 | 3, 3, 0, |
6135 | doc: /* Internal subroutine for read-file-name. Do not call this. */) | |
6136 | (string, dir, action) | |
570d7624 JB |
6137 | Lisp_Object string, dir, action; |
6138 | /* action is nil for complete, t for return list of completions, | |
6139 | lambda for verify final value */ | |
6140 | { | |
6141 | Lisp_Object name, specdir, realdir, val, orig_string; | |
09121adc | 6142 | int changed; |
8ce069f5 | 6143 | struct gcpro gcpro1, gcpro2, gcpro3, gcpro4, gcpro5; |
09121adc | 6144 | |
b7826503 | 6145 | CHECK_STRING (string); |
58cc3710 | 6146 | |
09121adc RS |
6147 | realdir = dir; |
6148 | name = string; | |
6149 | orig_string = Qnil; | |
6150 | specdir = Qnil; | |
6151 | changed = 0; | |
6152 | /* No need to protect ACTION--we only compare it with t and nil. */ | |
8ce069f5 | 6153 | GCPRO5 (string, realdir, name, specdir, orig_string); |
570d7624 | 6154 | |
d5db4077 | 6155 | if (SCHARS (string) == 0) |
570d7624 | 6156 | { |
570d7624 | 6157 | if (EQ (action, Qlambda)) |
09121adc RS |
6158 | { |
6159 | UNGCPRO; | |
6160 | return Qnil; | |
6161 | } | |
570d7624 JB |
6162 | } |
6163 | else | |
6164 | { | |
6165 | orig_string = string; | |
6166 | string = Fsubstitute_in_file_name (string); | |
09121adc | 6167 | changed = NILP (Fstring_equal (string, orig_string)); |
570d7624 | 6168 | name = Ffile_name_nondirectory (string); |
09121adc RS |
6169 | val = Ffile_name_directory (string); |
6170 | if (! NILP (val)) | |
6171 | realdir = Fexpand_file_name (val, realdir); | |
570d7624 JB |
6172 | } |
6173 | ||
265a9e55 | 6174 | if (NILP (action)) |
570d7624 JB |
6175 | { |
6176 | specdir = Ffile_name_directory (string); | |
6177 | val = Ffile_name_completion (name, realdir); | |
09121adc | 6178 | UNGCPRO; |
93c30b5f | 6179 | if (!STRINGP (val)) |
570d7624 | 6180 | { |
09121adc | 6181 | if (changed) |
dbd04e01 | 6182 | return double_dollars (string); |
09121adc | 6183 | return val; |
570d7624 JB |
6184 | } |
6185 | ||
265a9e55 | 6186 | if (!NILP (specdir)) |
570d7624 JB |
6187 | val = concat2 (specdir, val); |
6188 | #ifndef VMS | |
6e710ae5 RS |
6189 | return double_dollars (val); |
6190 | #else /* not VMS */ | |
09121adc | 6191 | return val; |
6e710ae5 | 6192 | #endif /* not VMS */ |
570d7624 | 6193 | } |
09121adc | 6194 | UNGCPRO; |
570d7624 JB |
6195 | |
6196 | if (EQ (action, Qt)) | |
59ffe07d KS |
6197 | { |
6198 | Lisp_Object all = Ffile_name_all_completions (name, realdir); | |
6199 | Lisp_Object comp; | |
6200 | int count; | |
6201 | ||
6202 | if (NILP (Vread_file_name_predicate) | |
6203 | || EQ (Vread_file_name_predicate, Qfile_exists_p)) | |
6204 | return all; | |
da46f04f KS |
6205 | |
6206 | #ifndef VMS | |
6207 | if (EQ (Vread_file_name_predicate, Qfile_directory_p)) | |
6208 | { | |
efdc16c9 | 6209 | /* Brute-force speed up for directory checking: |
da46f04f KS |
6210 | Discard strings which don't end in a slash. */ |
6211 | for (comp = Qnil; CONSP (all); all = XCDR (all)) | |
6212 | { | |
6213 | Lisp_Object tem = XCAR (all); | |
6214 | int len; | |
6215 | if (STRINGP (tem) && | |
d5db4077 KR |
6216 | (len = SCHARS (tem), len > 0) && |
6217 | IS_DIRECTORY_SEP (SREF (tem, len-1))) | |
da46f04f KS |
6218 | comp = Fcons (tem, comp); |
6219 | } | |
6220 | } | |
6221 | else | |
6222 | #endif | |
6223 | { | |
6224 | /* Must do it the hard (and slow) way. */ | |
6225 | GCPRO3 (all, comp, specdir); | |
aed13378 | 6226 | count = SPECPDL_INDEX (); |
da46f04f KS |
6227 | record_unwind_protect (read_file_name_cleanup, current_buffer->directory); |
6228 | current_buffer->directory = realdir; | |
6229 | for (comp = Qnil; CONSP (all); all = XCDR (all)) | |
6230 | if (!NILP (call1 (Vread_file_name_predicate, XCAR (all)))) | |
6231 | comp = Fcons (XCAR (all), comp); | |
6232 | unbind_to (count, Qnil); | |
6233 | UNGCPRO; | |
6234 | } | |
59ffe07d KS |
6235 | return Fnreverse (comp); |
6236 | } | |
6237 | ||
570d7624 JB |
6238 | /* Only other case actually used is ACTION = lambda */ |
6239 | #ifdef VMS | |
6240 | /* Supposedly this helps commands such as `cd' that read directory names, | |
6241 | but can someone explain how it helps them? -- RMS */ | |
d5db4077 | 6242 | if (SCHARS (name) == 0) |
570d7624 JB |
6243 | return Qt; |
6244 | #endif /* VMS */ | |
238aedc9 | 6245 | string = Fexpand_file_name (string, dir); |
59ffe07d KS |
6246 | if (!NILP (Vread_file_name_predicate)) |
6247 | return call1 (Vread_file_name_predicate, string); | |
570d7624 JB |
6248 | return Ffile_exists_p (string); |
6249 | } | |
6250 | ||
88208bb8 JD |
6251 | DEFUN ("next-read-file-uses-dialog-p", Fnext_read_file_uses_dialog_p, |
6252 | Snext_read_file_uses_dialog_p, 0, 0, 0, | |
6253 | doc: /* Return t if a call to `read-file-name' will use a dialog. | |
6254 | The return value is only relevant for a call to `read-file-name' that happens | |
6255 | before any other event (mouse or keypress) is handeled. */) | |
6256 | () | |
6257 | { | |
b15325b2 | 6258 | #if defined (USE_MOTIF) || defined (HAVE_NTGUI) || defined (USE_GTK) || defined (HAVE_CARBON) |
88208bb8 JD |
6259 | if ((NILP (last_nonmenu_event) || CONSP (last_nonmenu_event)) |
6260 | && use_dialog_box | |
6261 | && use_file_dialog | |
6262 | && have_menus_p ()) | |
6263 | return Qt; | |
6264 | #endif | |
6265 | return Qnil; | |
6266 | } | |
d4a42098 | 6267 | |
59ffe07d | 6268 | DEFUN ("read-file-name", Fread_file_name, Sread_file_name, 1, 6, 0, |
8c1a1077 PJ |
6269 | doc: /* Read file name, prompting with PROMPT and completing in directory DIR. |
6270 | Value is not expanded---you must call `expand-file-name' yourself. | |
238aedc9 LT |
6271 | Default name to DEFAULT-FILENAME if user exits the minibuffer with |
6272 | the same non-empty string that was inserted by this function. | |
8c1a1077 PJ |
6273 | (If DEFAULT-FILENAME is omitted, the visited file name is used, |
6274 | except that if INITIAL is specified, that combined with DIR is used.) | |
238aedc9 LT |
6275 | If the user exits with an empty minibuffer, this function returns |
6276 | an empty string. (This can only happen if the user erased the | |
6277 | pre-inserted contents or if `insert-default-directory' is nil.) | |
8c1a1077 PJ |
6278 | Fourth arg MUSTMATCH non-nil means require existing file's name. |
6279 | Non-nil and non-t means also require confirmation after completion. | |
6280 | Fifth arg INITIAL specifies text to start with. | |
238aedc9 LT |
6281 | If optional sixth arg PREDICATE is non-nil, possible completions and |
6282 | the resulting file name must satisfy (funcall PREDICATE NAME). | |
6283 | DIR should be an absolute directory name. It defaults to the value of | |
6284 | `default-directory'. | |
8c1a1077 PJ |
6285 | |
6286 | If this command was invoked with the mouse, use a file dialog box if | |
6287 | `use-dialog-box' is non-nil, and the window system or X toolkit in use | |
d35c2489 JPW |
6288 | provides a file dialog box. |
6289 | ||
6290 | See also `read-file-name-completion-ignore-case' | |
6291 | and `read-file-name-function'. */) | |
59ffe07d KS |
6292 | (prompt, dir, default_filename, mustmatch, initial, predicate) |
6293 | Lisp_Object prompt, dir, default_filename, mustmatch, initial, predicate; | |
570d7624 | 6294 | { |
8d6d9fef | 6295 | Lisp_Object val, insdef, tem; |
570d7624 JB |
6296 | struct gcpro gcpro1, gcpro2; |
6297 | register char *homedir; | |
d7231f93 | 6298 | Lisp_Object decoded_homedir; |
62f555a5 RS |
6299 | int replace_in_history = 0; |
6300 | int add_to_history = 0; | |
570d7624 JB |
6301 | int count; |
6302 | ||
265a9e55 | 6303 | if (NILP (dir)) |
570d7624 | 6304 | dir = current_buffer->directory; |
abd5b7f2 RS |
6305 | if (NILP (Ffile_name_absolute_p (dir))) |
6306 | dir = Fexpand_file_name (dir, Qnil); | |
3b7f6e60 | 6307 | if (NILP (default_filename)) |
abd5b7f2 RS |
6308 | default_filename |
6309 | = (!NILP (initial) | |
6310 | ? Fexpand_file_name (initial, dir) | |
6311 | : current_buffer->filename); | |
570d7624 JB |
6312 | |
6313 | /* If dir starts with user's homedir, change that to ~. */ | |
6314 | homedir = (char *) egetenv ("HOME"); | |
199607e4 | 6315 | #ifdef DOS_NT |
417c884a EZ |
6316 | /* homedir can be NULL in temacs, since Vprocess_environment is not |
6317 | yet set up. We shouldn't crash in that case. */ | |
6318 | if (homedir != 0) | |
6319 | { | |
6320 | homedir = strcpy (alloca (strlen (homedir) + 1), homedir); | |
6321 | CORRECT_DIR_SEPS (homedir); | |
6322 | } | |
199607e4 | 6323 | #endif |
d7231f93 KH |
6324 | if (homedir != 0) |
6325 | decoded_homedir | |
6326 | = DECODE_FILE (make_unibyte_string (homedir, strlen (homedir))); | |
570d7624 | 6327 | if (homedir != 0 |
93c30b5f | 6328 | && STRINGP (dir) |
d7231f93 KH |
6329 | && !strncmp (SDATA (decoded_homedir), SDATA (dir), |
6330 | SBYTES (decoded_homedir)) | |
6331 | && IS_DIRECTORY_SEP (SREF (dir, SBYTES (decoded_homedir)))) | |
570d7624 | 6332 | { |
60204046 | 6333 | dir = Fsubstring (dir, make_number (SCHARS (decoded_homedir)), Qnil); |
d7231f93 | 6334 | dir = concat2 (build_string ("~"), dir); |
570d7624 | 6335 | } |
8d6d9fef AS |
6336 | /* Likewise for default_filename. */ |
6337 | if (homedir != 0 | |
6338 | && STRINGP (default_filename) | |
d7231f93 KH |
6339 | && !strncmp (SDATA (decoded_homedir), SDATA (default_filename), |
6340 | SBYTES (decoded_homedir)) | |
6341 | && IS_DIRECTORY_SEP (SREF (default_filename, SBYTES (decoded_homedir)))) | |
8d6d9fef AS |
6342 | { |
6343 | default_filename | |
d7231f93 | 6344 | = Fsubstring (default_filename, |
60204046 | 6345 | make_number (SCHARS (decoded_homedir)), Qnil); |
d7231f93 | 6346 | default_filename = concat2 (build_string ("~"), default_filename); |
8d6d9fef AS |
6347 | } |
6348 | if (!NILP (default_filename)) | |
b537a6c7 | 6349 | { |
b7826503 | 6350 | CHECK_STRING (default_filename); |
b537a6c7 RS |
6351 | default_filename = double_dollars (default_filename); |
6352 | } | |
570d7624 | 6353 | |
58cc3710 | 6354 | if (insert_default_directory && STRINGP (dir)) |
570d7624 JB |
6355 | { |
6356 | insdef = dir; | |
265a9e55 | 6357 | if (!NILP (initial)) |
570d7624 | 6358 | { |
15c65264 | 6359 | Lisp_Object args[2], pos; |
570d7624 JB |
6360 | |
6361 | args[0] = insdef; | |
6362 | args[1] = initial; | |
6363 | insdef = Fconcat (2, args); | |
d5db4077 | 6364 | pos = make_number (SCHARS (double_dollars (dir))); |
8d6d9fef | 6365 | insdef = Fcons (double_dollars (insdef), pos); |
570d7624 | 6366 | } |
6e710ae5 | 6367 | else |
8d6d9fef | 6368 | insdef = double_dollars (insdef); |
570d7624 | 6369 | } |
58cc3710 | 6370 | else if (STRINGP (initial)) |
8d6d9fef | 6371 | insdef = Fcons (double_dollars (initial), make_number (0)); |
570d7624 | 6372 | else |
8d6d9fef | 6373 | insdef = Qnil; |
570d7624 | 6374 | |
59ffe07d KS |
6375 | if (!NILP (Vread_file_name_function)) |
6376 | { | |
6377 | Lisp_Object args[7]; | |
6378 | ||
6379 | GCPRO2 (insdef, default_filename); | |
6380 | args[0] = Vread_file_name_function; | |
6381 | args[1] = prompt; | |
6382 | args[2] = dir; | |
6383 | args[3] = default_filename; | |
6384 | args[4] = mustmatch; | |
6385 | args[5] = initial; | |
6386 | args[6] = predicate; | |
6387 | RETURN_UNGCPRO (Ffuncall (7, args)); | |
6388 | } | |
6389 | ||
aed13378 | 6390 | count = SPECPDL_INDEX (); |
316ef0dc JPW |
6391 | specbind (intern ("completion-ignore-case"), |
6392 | read_file_name_completion_ignore_case ? Qt : Qnil); | |
a79485af | 6393 | specbind (intern ("minibuffer-completing-file-name"), Qt); |
efdc16c9 | 6394 | specbind (intern ("read-file-name-predicate"), |
59ffe07d | 6395 | (NILP (predicate) ? Qfile_exists_p : predicate)); |
a79485af | 6396 | |
3b7f6e60 | 6397 | GCPRO2 (insdef, default_filename); |
c60ee5e7 | 6398 | |
b15325b2 | 6399 | #if defined (USE_MOTIF) || defined (HAVE_NTGUI) || defined (USE_GTK) || defined (HAVE_CARBON) |
88208bb8 | 6400 | if (! NILP (Fnext_read_file_uses_dialog_p ())) |
9c856db9 | 6401 | { |
9172b88d GM |
6402 | /* If DIR contains a file name, split it. */ |
6403 | Lisp_Object file; | |
6404 | file = Ffile_name_nondirectory (dir); | |
d5db4077 | 6405 | if (SCHARS (file) && NILP (default_filename)) |
9172b88d GM |
6406 | { |
6407 | default_filename = file; | |
6408 | dir = Ffile_name_directory (dir); | |
6409 | } | |
f73f57bd JR |
6410 | if (!NILP(default_filename)) |
6411 | default_filename = Fexpand_file_name (default_filename, dir); | |
f9d64bb3 JD |
6412 | val = Fx_file_dialog (prompt, dir, default_filename, mustmatch, |
6413 | EQ (predicate, Qfile_directory_p) ? Qt : Qnil); | |
9c856db9 GM |
6414 | add_to_history = 1; |
6415 | } | |
6416 | else | |
6417 | #endif | |
6418 | val = Fcompleting_read (prompt, intern ("read-file-name-internal"), | |
6419 | dir, mustmatch, insdef, | |
6420 | Qfile_name_history, default_filename, Qnil); | |
62f555a5 RS |
6421 | |
6422 | tem = Fsymbol_value (Qfile_name_history); | |
03699b14 | 6423 | if (CONSP (tem) && EQ (XCAR (tem), val)) |
62f555a5 RS |
6424 | replace_in_history = 1; |
6425 | ||
6426 | /* If Fcompleting_read returned the inserted default string itself | |
a8c828be RS |
6427 | (rather than a new string with the same contents), |
6428 | it has to mean that the user typed RET with the minibuffer empty. | |
6429 | In that case, we really want to return "" | |
6430 | so that commands such as set-visited-file-name can distinguish. */ | |
6431 | if (EQ (val, default_filename)) | |
62f555a5 RS |
6432 | { |
6433 | /* In this case, Fcompleting_read has not added an element | |
6434 | to the history. Maybe we should. */ | |
6435 | if (! replace_in_history) | |
6436 | add_to_history = 1; | |
6437 | ||
4a9f0fae | 6438 | val = empty_string; |
62f555a5 | 6439 | } |
570d7624 | 6440 | |
570d7624 | 6441 | unbind_to (count, Qnil); |
570d7624 | 6442 | UNGCPRO; |
265a9e55 | 6443 | if (NILP (val)) |
570d7624 | 6444 | error ("No file name specified"); |
62f555a5 | 6445 | |
8d6d9fef | 6446 | tem = Fstring_equal (val, CONSP (insdef) ? XCAR (insdef) : insdef); |
62f555a5 | 6447 | |
3b7f6e60 | 6448 | if (!NILP (tem) && !NILP (default_filename)) |
62f555a5 | 6449 | val = default_filename; |
62f555a5 | 6450 | val = Fsubstitute_in_file_name (val); |
570d7624 | 6451 | |
62f555a5 RS |
6452 | if (replace_in_history) |
6453 | /* Replace what Fcompleting_read added to the history | |
6454 | with what we will actually return. */ | |
75fa7206 RS |
6455 | { |
6456 | Lisp_Object val1 = double_dollars (val); | |
6457 | tem = Fsymbol_value (Qfile_name_history); | |
c1558952 | 6458 | if (history_delete_duplicates) |
75fa7206 RS |
6459 | XSETCDR (tem, Fdelete (val1, XCDR(tem))); |
6460 | XSETCAR (tem, val1); | |
6461 | } | |
62f555a5 | 6462 | else if (add_to_history) |
570d7624 | 6463 | { |
62f555a5 RS |
6464 | /* Add the value to the history--but not if it matches |
6465 | the last value already there. */ | |
8d6d9fef | 6466 | Lisp_Object val1 = double_dollars (val); |
62f555a5 | 6467 | tem = Fsymbol_value (Qfile_name_history); |
03699b14 | 6468 | if (! CONSP (tem) || NILP (Fequal (XCAR (tem), val1))) |
75fa7206 RS |
6469 | { |
6470 | if (history_delete_duplicates) tem = Fdelete (val1, tem); | |
6471 | Fset (Qfile_name_history, Fcons (val1, tem)); | |
6472 | } | |
570d7624 | 6473 | } |
efdc16c9 | 6474 | |
62f555a5 | 6475 | return val; |
570d7624 | 6476 | } |
9c856db9 | 6477 | |
570d7624 | 6478 | \f |
dbda5089 GV |
6479 | void |
6480 | init_fileio_once () | |
6481 | { | |
6482 | /* Must be set before any path manipulation is performed. */ | |
6483 | XSETFASTINT (Vdirectory_sep_char, '/'); | |
6484 | } | |
6485 | ||
9c856db9 | 6486 | \f |
dfcf069d | 6487 | void |
570d7624 JB |
6488 | syms_of_fileio () |
6489 | { | |
f6c9b683 | 6490 | Qoperations = intern ("operations"); |
0bf2eed2 | 6491 | Qexpand_file_name = intern ("expand-file-name"); |
273e0829 | 6492 | Qsubstitute_in_file_name = intern ("substitute-in-file-name"); |
0bf2eed2 RS |
6493 | Qdirectory_file_name = intern ("directory-file-name"); |
6494 | Qfile_name_directory = intern ("file-name-directory"); | |
6495 | Qfile_name_nondirectory = intern ("file-name-nondirectory"); | |
642ef245 | 6496 | Qunhandled_file_name_directory = intern ("unhandled-file-name-directory"); |
0bf2eed2 | 6497 | Qfile_name_as_directory = intern ("file-name-as-directory"); |
32f4334d | 6498 | Qcopy_file = intern ("copy-file"); |
a6e6e718 | 6499 | Qmake_directory_internal = intern ("make-directory-internal"); |
b272d624 | 6500 | Qmake_directory = intern ("make-directory"); |
32f4334d RS |
6501 | Qdelete_directory = intern ("delete-directory"); |
6502 | Qdelete_file = intern ("delete-file"); | |
6503 | Qrename_file = intern ("rename-file"); | |
6504 | Qadd_name_to_file = intern ("add-name-to-file"); | |
6505 | Qmake_symbolic_link = intern ("make-symbolic-link"); | |
6506 | Qfile_exists_p = intern ("file-exists-p"); | |
6507 | Qfile_executable_p = intern ("file-executable-p"); | |
6508 | Qfile_readable_p = intern ("file-readable-p"); | |
32f4334d | 6509 | Qfile_writable_p = intern ("file-writable-p"); |
1f8653eb RS |
6510 | Qfile_symlink_p = intern ("file-symlink-p"); |
6511 | Qaccess_file = intern ("access-file"); | |
32f4334d | 6512 | Qfile_directory_p = intern ("file-directory-p"); |
adedc71d | 6513 | Qfile_regular_p = intern ("file-regular-p"); |
32f4334d RS |
6514 | Qfile_accessible_directory_p = intern ("file-accessible-directory-p"); |
6515 | Qfile_modes = intern ("file-modes"); | |
6516 | Qset_file_modes = intern ("set-file-modes"); | |
819da85b | 6517 | Qset_file_times = intern ("set-file-times"); |
32f4334d RS |
6518 | Qfile_newer_than_file_p = intern ("file-newer-than-file-p"); |
6519 | Qinsert_file_contents = intern ("insert-file-contents"); | |
6520 | Qwrite_region = intern ("write-region"); | |
6521 | Qverify_visited_file_modtime = intern ("verify-visited-file-modtime"); | |
3ec46acd | 6522 | Qset_visited_file_modtime = intern ("set-visited-file-modtime"); |
356a6224 | 6523 | Qauto_save_coding = intern ("auto-save-coding"); |
32f4334d | 6524 | |
f6c9b683 | 6525 | staticpro (&Qoperations); |
642ef245 | 6526 | staticpro (&Qexpand_file_name); |
273e0829 | 6527 | staticpro (&Qsubstitute_in_file_name); |
642ef245 JB |
6528 | staticpro (&Qdirectory_file_name); |
6529 | staticpro (&Qfile_name_directory); | |
6530 | staticpro (&Qfile_name_nondirectory); | |
6531 | staticpro (&Qunhandled_file_name_directory); | |
6532 | staticpro (&Qfile_name_as_directory); | |
15c65264 | 6533 | staticpro (&Qcopy_file); |
c34b559d | 6534 | staticpro (&Qmake_directory_internal); |
b272d624 | 6535 | staticpro (&Qmake_directory); |
15c65264 RS |
6536 | staticpro (&Qdelete_directory); |
6537 | staticpro (&Qdelete_file); | |
6538 | staticpro (&Qrename_file); | |
6539 | staticpro (&Qadd_name_to_file); | |
6540 | staticpro (&Qmake_symbolic_link); | |
6541 | staticpro (&Qfile_exists_p); | |
6542 | staticpro (&Qfile_executable_p); | |
6543 | staticpro (&Qfile_readable_p); | |
15c65264 | 6544 | staticpro (&Qfile_writable_p); |
1f8653eb RS |
6545 | staticpro (&Qaccess_file); |
6546 | staticpro (&Qfile_symlink_p); | |
15c65264 | 6547 | staticpro (&Qfile_directory_p); |
adedc71d | 6548 | staticpro (&Qfile_regular_p); |
15c65264 RS |
6549 | staticpro (&Qfile_accessible_directory_p); |
6550 | staticpro (&Qfile_modes); | |
6551 | staticpro (&Qset_file_modes); | |
819da85b | 6552 | staticpro (&Qset_file_times); |
15c65264 RS |
6553 | staticpro (&Qfile_newer_than_file_p); |
6554 | staticpro (&Qinsert_file_contents); | |
6555 | staticpro (&Qwrite_region); | |
6556 | staticpro (&Qverify_visited_file_modtime); | |
0a61794b | 6557 | staticpro (&Qset_visited_file_modtime); |
356a6224 | 6558 | staticpro (&Qauto_save_coding); |
642ef245 JB |
6559 | |
6560 | Qfile_name_history = intern ("file-name-history"); | |
6561 | Fset (Qfile_name_history, Qnil); | |
15c65264 RS |
6562 | staticpro (&Qfile_name_history); |
6563 | ||
570d7624 JB |
6564 | Qfile_error = intern ("file-error"); |
6565 | staticpro (&Qfile_error); | |
199607e4 | 6566 | Qfile_already_exists = intern ("file-already-exists"); |
570d7624 | 6567 | staticpro (&Qfile_already_exists); |
c0b7b21c RS |
6568 | Qfile_date_error = intern ("file-date-error"); |
6569 | staticpro (&Qfile_date_error); | |
505ab9bc RS |
6570 | Qexcl = intern ("excl"); |
6571 | staticpro (&Qexcl); | |
570d7624 | 6572 | |
5e570b75 | 6573 | #ifdef DOS_NT |
4c3c22f3 RS |
6574 | Qfind_buffer_file_type = intern ("find-buffer-file-type"); |
6575 | staticpro (&Qfind_buffer_file_type); | |
5e570b75 | 6576 | #endif /* DOS_NT */ |
4c3c22f3 | 6577 | |
b1d1b865 | 6578 | DEFVAR_LISP ("file-name-coding-system", &Vfile_name_coding_system, |
8c1a1077 | 6579 | doc: /* *Coding system for encoding file names. |
346ebf53 | 6580 | If it is nil, `default-file-name-coding-system' (which see) is used. */); |
b1d1b865 RS |
6581 | Vfile_name_coding_system = Qnil; |
6582 | ||
cd913586 KH |
6583 | DEFVAR_LISP ("default-file-name-coding-system", |
6584 | &Vdefault_file_name_coding_system, | |
8c1a1077 | 6585 | doc: /* Default coding system for encoding file names. |
346ebf53 | 6586 | This variable is used only when `file-name-coding-system' is nil. |
8c1a1077 | 6587 | |
346ebf53 | 6588 | This variable is set/changed by the command `set-language-environment'. |
8c1a1077 | 6589 | User should not set this variable manually, |
346ebf53 | 6590 | instead use `file-name-coding-system' to get a constant encoding |
8c1a1077 | 6591 | of file names regardless of the current language environment. */); |
cd913586 KH |
6592 | Vdefault_file_name_coding_system = Qnil; |
6593 | ||
0d420e88 BG |
6594 | Qformat_decode = intern ("format-decode"); |
6595 | staticpro (&Qformat_decode); | |
6596 | Qformat_annotate_function = intern ("format-annotate-function"); | |
6597 | staticpro (&Qformat_annotate_function); | |
2080470e KH |
6598 | Qafter_insert_file_set_coding = intern ("after-insert-file-set-coding"); |
6599 | staticpro (&Qafter_insert_file_set_coding); | |
efdc16c9 | 6600 | |
d6a3cc15 RS |
6601 | Qcar_less_than_car = intern ("car-less-than-car"); |
6602 | staticpro (&Qcar_less_than_car); | |
6603 | ||
570d7624 JB |
6604 | Fput (Qfile_error, Qerror_conditions, |
6605 | Fcons (Qfile_error, Fcons (Qerror, Qnil))); | |
6606 | Fput (Qfile_error, Qerror_message, | |
6607 | build_string ("File error")); | |
6608 | ||
6609 | Fput (Qfile_already_exists, Qerror_conditions, | |
6610 | Fcons (Qfile_already_exists, | |
6611 | Fcons (Qfile_error, Fcons (Qerror, Qnil)))); | |
6612 | Fput (Qfile_already_exists, Qerror_message, | |
6613 | build_string ("File already exists")); | |
6614 | ||
c0b7b21c RS |
6615 | Fput (Qfile_date_error, Qerror_conditions, |
6616 | Fcons (Qfile_date_error, | |
6617 | Fcons (Qfile_error, Fcons (Qerror, Qnil)))); | |
6618 | Fput (Qfile_date_error, Qerror_message, | |
6619 | build_string ("Cannot set file date")); | |
6620 | ||
59ffe07d KS |
6621 | DEFVAR_LISP ("read-file-name-function", &Vread_file_name_function, |
6622 | doc: /* If this is non-nil, `read-file-name' does its work by calling this function. */); | |
6623 | Vread_file_name_function = Qnil; | |
6624 | ||
6625 | DEFVAR_LISP ("read-file-name-predicate", &Vread_file_name_predicate, | |
6626 | doc: /* Current predicate used by `read-file-name-internal'. */); | |
6627 | Vread_file_name_predicate = Qnil; | |
6628 | ||
316ef0dc JPW |
6629 | DEFVAR_BOOL ("read-file-name-completion-ignore-case", &read_file_name_completion_ignore_case, |
6630 | doc: /* *Non-nil means when reading a file name completion ignores case. */); | |
6631 | #if defined VMS || defined DOS_NT || defined MAC_OS | |
6632 | read_file_name_completion_ignore_case = 1; | |
6633 | #else | |
6634 | read_file_name_completion_ignore_case = 0; | |
6635 | #endif | |
6636 | ||
570d7624 | 6637 | DEFVAR_BOOL ("insert-default-directory", &insert_default_directory, |
238aedc9 LT |
6638 | doc: /* *Non-nil means when reading a filename start with default dir in minibuffer. |
6639 | If the initial minibuffer contents are non-empty, you can usually | |
6640 | request a default filename by typing RETURN without editing. For some | |
6641 | commands, exiting with an empty minibuffer has a special meaning, | |
6642 | such as making the current buffer visit no file in the case of | |
6643 | `set-visited-file-name'. | |
6644 | If this variable is non-nil, the minibuffer contents are always | |
6645 | initially non-empty and typing RETURN without editing will fetch the | |
6646 | default name, if one is provided. Note however that this default name | |
6647 | is not necessarily the name originally inserted in the minibuffer, if | |
6648 | that is just the default directory. | |
6649 | If this variable is nil, the minibuffer often starts out empty. In | |
6650 | that case you may have to explicitly fetch the next history element to | |
6651 | request the default name. */); | |
570d7624 JB |
6652 | insert_default_directory = 1; |
6653 | ||
6654 | DEFVAR_BOOL ("vms-stmlf-recfm", &vms_stmlf_recfm, | |
8c1a1077 PJ |
6655 | doc: /* *Non-nil means write new files with record format `stmlf'. |
6656 | nil means use format `var'. This variable is meaningful only on VMS. */); | |
570d7624 JB |
6657 | vms_stmlf_recfm = 0; |
6658 | ||
199607e4 | 6659 | DEFVAR_LISP ("directory-sep-char", &Vdirectory_sep_char, |
8c1a1077 | 6660 | doc: /* Directory separator character for built-in functions that return file names. |
d57563b6 | 6661 | The value is always ?/. Don't use this variable, just use `/'. */); |
199607e4 | 6662 | |
1d1826db | 6663 | DEFVAR_LISP ("file-name-handler-alist", &Vfile_name_handler_alist, |
8c1a1077 PJ |
6664 | doc: /* *Alist of elements (REGEXP . HANDLER) for file names handled specially. |
6665 | If a file name matches REGEXP, then all I/O on that file is done by calling | |
6666 | HANDLER. | |
6667 | ||
6668 | The first argument given to HANDLER is the name of the I/O primitive | |
6669 | to be handled; the remaining arguments are the arguments that were | |
6670 | passed to that primitive. For example, if you do | |
6671 | (file-exists-p FILENAME) | |
6672 | and FILENAME is handled by HANDLER, then HANDLER is called like this: | |
6673 | (funcall HANDLER 'file-exists-p FILENAME) | |
6674 | The function `find-file-name-handler' checks this list for a handler | |
6675 | for its argument. */); | |
09121adc RS |
6676 | Vfile_name_handler_alist = Qnil; |
6677 | ||
0414b394 KH |
6678 | DEFVAR_LISP ("set-auto-coding-function", |
6679 | &Vset_auto_coding_function, | |
8c1a1077 PJ |
6680 | doc: /* If non-nil, a function to call to decide a coding system of file. |
6681 | Two arguments are passed to this function: the file name | |
6682 | and the length of a file contents following the point. | |
6683 | This function should return a coding system to decode the file contents. | |
6684 | It should check the file name against `auto-coding-alist'. | |
6685 | If no coding system is decided, it should check a coding system | |
6686 | specified in the heading lines with the format: | |
6687 | -*- ... coding: CODING-SYSTEM; ... -*- | |
6688 | or local variable spec of the tailing lines with `coding:' tag. */); | |
0414b394 | 6689 | Vset_auto_coding_function = Qnil; |
c9e82392 | 6690 | |
d6a3cc15 | 6691 | DEFVAR_LISP ("after-insert-file-functions", &Vafter_insert_file_functions, |
8c1a1077 | 6692 | doc: /* A list of functions to be called at the end of `insert-file-contents'. |
cf6d2357 RS |
6693 | Each is passed one argument, the number of characters inserted. |
6694 | It should return the new character count, and leave point the same. | |
6695 | If `insert-file-contents' is intercepted by a handler from | |
6696 | `file-name-handler-alist', that handler is responsible for calling the | |
6697 | functions in `after-insert-file-functions' if appropriate. */); | |
d6a3cc15 RS |
6698 | Vafter_insert_file_functions = Qnil; |
6699 | ||
6700 | DEFVAR_LISP ("write-region-annotate-functions", &Vwrite_region_annotate_functions, | |
8c1a1077 PJ |
6701 | doc: /* A list of functions to be called at the start of `write-region'. |
6702 | Each is passed two arguments, START and END as for `write-region'. | |
6703 | These are usually two numbers but not always; see the documentation | |
6704 | for `write-region'. The function should return a list of pairs | |
6705 | of the form (POSITION . STRING), consisting of strings to be effectively | |
6706 | inserted at the specified positions of the file being written (1 means to | |
6707 | insert before the first byte written). The POSITIONs must be sorted into | |
6708 | increasing order. If there are several functions in the list, the several | |
28c3eb5a | 6709 | lists are merged destructively. Alternatively, the function can return |
bd235610 SM |
6710 | with a different buffer current; in that case it should pay attention |
6711 | to the annotations returned by previous functions and listed in | |
6712 | `write-region-annotations-so-far'.*/); | |
d6a3cc15 | 6713 | Vwrite_region_annotate_functions = Qnil; |
bd235610 SM |
6714 | staticpro (&Qwrite_region_annotate_functions); |
6715 | Qwrite_region_annotate_functions | |
6716 | = intern ("write-region-annotate-functions"); | |
d6a3cc15 | 6717 | |
6fc6f94b RS |
6718 | DEFVAR_LISP ("write-region-annotations-so-far", |
6719 | &Vwrite_region_annotations_so_far, | |
8c1a1077 PJ |
6720 | doc: /* When an annotation function is called, this holds the previous annotations. |
6721 | These are the annotations made by other annotation functions | |
6722 | that were already called. See also `write-region-annotate-functions'. */); | |
6fc6f94b RS |
6723 | Vwrite_region_annotations_so_far = Qnil; |
6724 | ||
82c2d839 | 6725 | DEFVAR_LISP ("inhibit-file-name-handlers", &Vinhibit_file_name_handlers, |
8c1a1077 PJ |
6726 | doc: /* A list of file name handlers that temporarily should not be used. |
6727 | This applies only to the operation `inhibit-file-name-operation'. */); | |
82c2d839 RS |
6728 | Vinhibit_file_name_handlers = Qnil; |
6729 | ||
a65970a0 | 6730 | DEFVAR_LISP ("inhibit-file-name-operation", &Vinhibit_file_name_operation, |
8c1a1077 | 6731 | doc: /* The operation for which `inhibit-file-name-handlers' is applicable. */); |
a65970a0 RS |
6732 | Vinhibit_file_name_operation = Qnil; |
6733 | ||
e54d3b5d | 6734 | DEFVAR_LISP ("auto-save-list-file-name", &Vauto_save_list_file_name, |
8c1a1077 PJ |
6735 | doc: /* File name in which we write a list of all auto save file names. |
6736 | This variable is initialized automatically from `auto-save-list-file-prefix' | |
6737 | shortly after Emacs reads your `.emacs' file, if you have not yet given it | |
6738 | a non-nil value. */); | |
e54d3b5d RS |
6739 | Vauto_save_list_file_name = Qnil; |
6740 | ||
642ef245 | 6741 | defsubr (&Sfind_file_name_handler); |
570d7624 JB |
6742 | defsubr (&Sfile_name_directory); |
6743 | defsubr (&Sfile_name_nondirectory); | |
642ef245 | 6744 | defsubr (&Sunhandled_file_name_directory); |
570d7624 JB |
6745 | defsubr (&Sfile_name_as_directory); |
6746 | defsubr (&Sdirectory_file_name); | |
6747 | defsubr (&Smake_temp_name); | |
6748 | defsubr (&Sexpand_file_name); | |
6749 | defsubr (&Ssubstitute_in_file_name); | |
6750 | defsubr (&Scopy_file); | |
9bbe01fb | 6751 | defsubr (&Smake_directory_internal); |
aa734e17 | 6752 | defsubr (&Sdelete_directory); |
570d7624 JB |
6753 | defsubr (&Sdelete_file); |
6754 | defsubr (&Srename_file); | |
6755 | defsubr (&Sadd_name_to_file); | |
6756 | #ifdef S_IFLNK | |
6757 | defsubr (&Smake_symbolic_link); | |
6758 | #endif /* S_IFLNK */ | |
6759 | #ifdef VMS | |
6760 | defsubr (&Sdefine_logical_name); | |
6761 | #endif /* VMS */ | |
6762 | #ifdef HPUX_NET | |
6763 | defsubr (&Ssysnetunam); | |
6764 | #endif /* HPUX_NET */ | |
6765 | defsubr (&Sfile_name_absolute_p); | |
6766 | defsubr (&Sfile_exists_p); | |
6767 | defsubr (&Sfile_executable_p); | |
6768 | defsubr (&Sfile_readable_p); | |
6769 | defsubr (&Sfile_writable_p); | |
1f8653eb | 6770 | defsubr (&Saccess_file); |
570d7624 JB |
6771 | defsubr (&Sfile_symlink_p); |
6772 | defsubr (&Sfile_directory_p); | |
b72dea2a | 6773 | defsubr (&Sfile_accessible_directory_p); |
f793dc6c | 6774 | defsubr (&Sfile_regular_p); |
570d7624 JB |
6775 | defsubr (&Sfile_modes); |
6776 | defsubr (&Sset_file_modes); | |
819da85b | 6777 | defsubr (&Sset_file_times); |
c24e9a53 RS |
6778 | defsubr (&Sset_default_file_modes); |
6779 | defsubr (&Sdefault_file_modes); | |
570d7624 JB |
6780 | defsubr (&Sfile_newer_than_file_p); |
6781 | defsubr (&Sinsert_file_contents); | |
6782 | defsubr (&Swrite_region); | |
d6a3cc15 | 6783 | defsubr (&Scar_less_than_car); |
570d7624 JB |
6784 | defsubr (&Sverify_visited_file_modtime); |
6785 | defsubr (&Sclear_visited_file_modtime); | |
f5d5eccf | 6786 | defsubr (&Svisited_file_modtime); |
570d7624 JB |
6787 | defsubr (&Sset_visited_file_modtime); |
6788 | defsubr (&Sdo_auto_save); | |
6789 | defsubr (&Sset_buffer_auto_saved); | |
b60247d9 | 6790 | defsubr (&Sclear_buffer_auto_save_failure); |
570d7624 JB |
6791 | defsubr (&Srecent_auto_save_p); |
6792 | ||
6793 | defsubr (&Sread_file_name_internal); | |
6794 | defsubr (&Sread_file_name); | |
88208bb8 | 6795 | defsubr (&Snext_read_file_uses_dialog_p); |
85ffea93 | 6796 | |
483a2e10 | 6797 | #ifdef unix |
85ffea93 | 6798 | defsubr (&Sunix_sync); |
483a2e10 | 6799 | #endif |
570d7624 | 6800 | } |
ab5796a9 MB |
6801 | |
6802 | /* arch-tag: 64ba3fd7-f844-4fb2-ba4b-427eb928786c | |
6803 | (do not change this comment) */ |