Commit | Line | Data |
---|---|---|
570d7624 | 1 | /* File IO for GNU Emacs. |
38119822 | 2 | Copyright (C) 1985,86,87,88,93,94,95,96,97,98,99,2000, 2001 |
43fb7d9a | 3 | 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 | |
07590973 DL |
22 | #define _GNU_SOURCE /* for euidaccess */ |
23 | ||
18160b98 | 24 | #include <config.h> |
570d7624 | 25 | |
8a2a6032 | 26 | #if defined (USG5) || defined (BSD_SYSTEM) || defined (GNU_LINUX) |
bb369dc6 RS |
27 | #include <fcntl.h> |
28 | #endif | |
29 | ||
1b335d29 | 30 | #include <stdio.h> |
570d7624 JB |
31 | #include <sys/types.h> |
32 | #include <sys/stat.h> | |
bfb61299 | 33 | |
29beb080 RS |
34 | #ifdef HAVE_UNISTD_H |
35 | #include <unistd.h> | |
36 | #endif | |
37 | ||
f73b0ada BF |
38 | #if !defined (S_ISLNK) && defined (S_IFLNK) |
39 | # define S_ISLNK(m) (((m) & S_IFMT) == S_IFLNK) | |
40 | #endif | |
41 | ||
bb369dc6 RS |
42 | #if !defined (S_ISFIFO) && defined (S_IFIFO) |
43 | # define S_ISFIFO(m) (((m) & S_IFMT) == S_IFIFO) | |
44 | #endif | |
45 | ||
f73b0ada BF |
46 | #if !defined (S_ISREG) && defined (S_IFREG) |
47 | # define S_ISREG(m) (((m) & S_IFMT) == S_IFREG) | |
48 | #endif | |
49 | ||
bfb61299 | 50 | #ifdef VMS |
de5bf5d3 | 51 | #include "vms-pwd.h" |
bfb61299 | 52 | #else |
570d7624 | 53 | #include <pwd.h> |
bfb61299 JB |
54 | #endif |
55 | ||
570d7624 | 56 | #include <ctype.h> |
bfb61299 JB |
57 | |
58 | #ifdef VMS | |
3d9f5ce2 | 59 | #include "vmsdir.h" |
bfb61299 JB |
60 | #include <perror.h> |
61 | #include <stddef.h> | |
62 | #include <string.h> | |
bfb61299 JB |
63 | #endif |
64 | ||
570d7624 JB |
65 | #include <errno.h> |
66 | ||
bfb61299 | 67 | #ifndef vax11c |
f12ef5eb | 68 | #ifndef USE_CRT_DLL |
570d7624 | 69 | extern int errno; |
570d7624 | 70 | #endif |
f12ef5eb | 71 | #endif |
570d7624 | 72 | |
570d7624 JB |
73 | #ifdef APOLLO |
74 | #include <sys/time.h> | |
75 | #endif | |
76 | ||
6e23c83e JB |
77 | #ifndef USG |
78 | #ifndef VMS | |
79 | #ifndef BSD4_1 | |
5e570b75 | 80 | #ifndef WINDOWSNT |
6e23c83e JB |
81 | #define HAVE_FSYNC |
82 | #endif | |
83 | #endif | |
84 | #endif | |
5e570b75 | 85 | #endif |
6e23c83e | 86 | |
570d7624 | 87 | #include "lisp.h" |
8d4e077b | 88 | #include "intervals.h" |
570d7624 | 89 | #include "buffer.h" |
6fdaa9a0 KH |
90 | #include "charset.h" |
91 | #include "coding.h" | |
570d7624 JB |
92 | #include "window.h" |
93 | ||
5e570b75 RS |
94 | #ifdef WINDOWSNT |
95 | #define NOMINMAX 1 | |
96 | #include <windows.h> | |
97 | #include <stdlib.h> | |
98 | #include <fcntl.h> | |
99 | #endif /* not WINDOWSNT */ | |
100 | ||
7990d02a EZ |
101 | #ifdef MSDOS |
102 | #include "msdos.h" | |
103 | #include <sys/param.h> | |
104 | #if __DJGPP__ >= 2 | |
105 | #include <fcntl.h> | |
106 | #include <string.h> | |
107 | #endif | |
108 | #endif | |
109 | ||
199607e4 RS |
110 | #ifdef DOS_NT |
111 | #define CORRECT_DIR_SEPS(s) \ | |
112 | do { if ('/' == DIRECTORY_SEP) dostounix_filename (s); \ | |
113 | else unixtodos_filename (s); \ | |
114 | } while (0) | |
115 | /* On Windows, drive letters must be alphabetic - on DOS, the Netware | |
116 | redirector allows the six letters between 'Z' and 'a' as well. */ | |
117 | #ifdef MSDOS | |
118 | #define IS_DRIVE(x) ((x) >= 'A' && (x) <= 'z') | |
119 | #endif | |
120 | #ifdef WINDOWSNT | |
121 | #define IS_DRIVE(x) isalpha (x) | |
122 | #endif | |
f54b565c MB |
123 | /* Need to lower-case the drive letter, or else expanded |
124 | filenames will sometimes compare inequal, because | |
125 | `expand-file-name' doesn't always down-case the drive letter. */ | |
126 | #define DRIVE_LETTER(x) (tolower (x)) | |
199607e4 RS |
127 | #endif |
128 | ||
570d7624 | 129 | #ifdef VMS |
570d7624 JB |
130 | #include <file.h> |
131 | #include <rmsdef.h> | |
132 | #include <fab.h> | |
133 | #include <nam.h> | |
134 | #endif | |
135 | ||
de5bf5d3 | 136 | #include "systime.h" |
570d7624 JB |
137 | |
138 | #ifdef HPUX | |
139 | #include <netio.h> | |
9b7828a5 | 140 | #ifndef HPUX8 |
47e7b9e5 | 141 | #ifndef HPUX9 |
570d7624 JB |
142 | #include <errnet.h> |
143 | #endif | |
9b7828a5 | 144 | #endif |
47e7b9e5 | 145 | #endif |
570d7624 | 146 | |
9c856db9 GM |
147 | #include "commands.h" |
148 | extern int use_dialog_box; | |
149 | ||
570d7624 JB |
150 | #ifndef O_WRONLY |
151 | #define O_WRONLY 1 | |
152 | #endif | |
153 | ||
4018b5ef RS |
154 | #ifndef O_RDONLY |
155 | #define O_RDONLY 0 | |
156 | #endif | |
157 | ||
8f6df9b5 EZ |
158 | #ifndef S_ISLNK |
159 | # define lstat stat | |
160 | #endif | |
161 | ||
570d7624 JB |
162 | /* Nonzero during writing of auto-save files */ |
163 | int auto_saving; | |
164 | ||
165 | /* Set by auto_save_1 to mode of original file so Fwrite_region will create | |
166 | a new file with the same mode as the original */ | |
167 | int auto_save_mode_bits; | |
168 | ||
b1d1b865 RS |
169 | /* Coding system for file names, or nil if none. */ |
170 | Lisp_Object Vfile_name_coding_system; | |
171 | ||
cd913586 KH |
172 | /* Coding system for file names used only when |
173 | Vfile_name_coding_system is nil. */ | |
174 | Lisp_Object Vdefault_file_name_coding_system; | |
175 | ||
199607e4 | 176 | /* Alist of elements (REGEXP . HANDLER) for file names |
32f4334d RS |
177 | whose I/O is done with a special handler. */ |
178 | Lisp_Object Vfile_name_handler_alist; | |
179 | ||
0d420e88 BG |
180 | /* Format for auto-save files */ |
181 | Lisp_Object Vauto_save_file_format; | |
182 | ||
183 | /* Lisp functions for translating file formats */ | |
184 | Lisp_Object Qformat_decode, Qformat_annotate_function; | |
185 | ||
c9e82392 | 186 | /* Function to be called to decide a coding system of a reading file. */ |
0414b394 | 187 | Lisp_Object Vset_auto_coding_function; |
c9e82392 | 188 | |
d6a3cc15 RS |
189 | /* Functions to be called to process text properties in inserted file. */ |
190 | Lisp_Object Vafter_insert_file_functions; | |
191 | ||
192 | /* Functions to be called to create text property annotations for file. */ | |
193 | Lisp_Object Vwrite_region_annotate_functions; | |
194 | ||
6fc6f94b RS |
195 | /* During build_annotations, each time an annotation function is called, |
196 | this holds the annotations made by the previous functions. */ | |
197 | Lisp_Object Vwrite_region_annotations_so_far; | |
198 | ||
e54d3b5d RS |
199 | /* File name in which we write a list of all our auto save files. */ |
200 | Lisp_Object Vauto_save_list_file_name; | |
201 | ||
570d7624 JB |
202 | /* Nonzero means, when reading a filename in the minibuffer, |
203 | start out by inserting the default directory into the minibuffer. */ | |
204 | int insert_default_directory; | |
205 | ||
206 | /* On VMS, nonzero means write new files with record format stmlf. | |
207 | Zero means use var format. */ | |
208 | int vms_stmlf_recfm; | |
209 | ||
199607e4 RS |
210 | /* On NT, specifies the directory separator character, used (eg.) when |
211 | expanding file names. This can be bound to / or \. */ | |
212 | Lisp_Object Vdirectory_sep_char; | |
213 | ||
84f6296a RS |
214 | extern Lisp_Object Vuser_login_name; |
215 | ||
c1c4693e RS |
216 | #ifdef WINDOWSNT |
217 | extern Lisp_Object Vw32_get_true_file_attributes; | |
218 | #endif | |
219 | ||
84f6296a RS |
220 | extern int minibuf_level; |
221 | ||
a8c828be RS |
222 | extern int minibuffer_auto_raise; |
223 | ||
a65970a0 RS |
224 | /* These variables describe handlers that have "already" had a chance |
225 | to handle the current operation. | |
226 | ||
227 | Vinhibit_file_name_handlers is a list of file name handlers. | |
228 | Vinhibit_file_name_operation is the operation being handled. | |
229 | If we try to handle that operation, we ignore those handlers. */ | |
230 | ||
82c2d839 | 231 | static Lisp_Object Vinhibit_file_name_handlers; |
a65970a0 | 232 | static Lisp_Object Vinhibit_file_name_operation; |
82c2d839 | 233 | |
c0b7b21c | 234 | Lisp_Object Qfile_error, Qfile_already_exists, Qfile_date_error; |
505ab9bc | 235 | Lisp_Object Qexcl; |
15c65264 RS |
236 | Lisp_Object Qfile_name_history; |
237 | ||
d6a3cc15 RS |
238 | Lisp_Object Qcar_less_than_car; |
239 | ||
ce51c54c | 240 | static int a_write P_ ((int, Lisp_Object, int, int, |
b9013200 | 241 | Lisp_Object *, struct coding_system *)); |
ce51c54c KH |
242 | static int e_write P_ ((int, Lisp_Object, int, int, struct coding_system *)); |
243 | ||
ec7adf26 | 244 | \f |
5d01d666 | 245 | void |
570d7624 JB |
246 | report_file_error (string, data) |
247 | char *string; | |
248 | Lisp_Object data; | |
249 | { | |
250 | Lisp_Object errstring; | |
505ab9bc | 251 | int errorno = errno; |
570d7624 | 252 | |
ca9c0567 | 253 | synchronize_system_messages_locale (); |
68c45bf0 PE |
254 | errstring = code_convert_string_norecord (build_string (strerror (errorno)), |
255 | Vlocale_coding_system, 0); | |
256 | ||
570d7624 | 257 | while (1) |
505ab9bc RS |
258 | switch (errorno) |
259 | { | |
260 | case EEXIST: | |
261 | Fsignal (Qfile_already_exists, Fcons (errstring, data)); | |
262 | break; | |
263 | default: | |
264 | /* System error messages are capitalized. Downcase the initial | |
265 | unless it is followed by a slash. */ | |
266 | if (XSTRING (errstring)->data[1] != '/') | |
267 | XSTRING (errstring)->data[0] = DOWNCASE (XSTRING (errstring)->data[0]); | |
268 | ||
269 | Fsignal (Qfile_error, | |
270 | Fcons (build_string (string), Fcons (errstring, data))); | |
271 | } | |
570d7624 | 272 | } |
b5148e85 | 273 | |
b27a1703 | 274 | Lisp_Object |
b5148e85 RS |
275 | close_file_unwind (fd) |
276 | Lisp_Object fd; | |
277 | { | |
68c45bf0 | 278 | emacs_close (XFASTINT (fd)); |
b27a1703 | 279 | return Qnil; |
b5148e85 | 280 | } |
a1d2b64a RS |
281 | |
282 | /* Restore point, having saved it as a marker. */ | |
283 | ||
ec7adf26 | 284 | static Lisp_Object |
a1d2b64a | 285 | restore_point_unwind (location) |
199607e4 | 286 | Lisp_Object location; |
a1d2b64a | 287 | { |
ec7adf26 | 288 | Fgoto_char (location); |
a1d2b64a | 289 | Fset_marker (location, Qnil, Qnil); |
b27a1703 | 290 | return Qnil; |
a1d2b64a | 291 | } |
570d7624 | 292 | \f |
0bf2eed2 | 293 | Lisp_Object Qexpand_file_name; |
273e0829 | 294 | Lisp_Object Qsubstitute_in_file_name; |
0bf2eed2 RS |
295 | Lisp_Object Qdirectory_file_name; |
296 | Lisp_Object Qfile_name_directory; | |
297 | Lisp_Object Qfile_name_nondirectory; | |
642ef245 | 298 | Lisp_Object Qunhandled_file_name_directory; |
0bf2eed2 | 299 | Lisp_Object Qfile_name_as_directory; |
32f4334d | 300 | Lisp_Object Qcopy_file; |
a6e6e718 | 301 | Lisp_Object Qmake_directory_internal; |
b272d624 | 302 | Lisp_Object Qmake_directory; |
32f4334d RS |
303 | Lisp_Object Qdelete_directory; |
304 | Lisp_Object Qdelete_file; | |
305 | Lisp_Object Qrename_file; | |
306 | Lisp_Object Qadd_name_to_file; | |
307 | Lisp_Object Qmake_symbolic_link; | |
308 | Lisp_Object Qfile_exists_p; | |
309 | Lisp_Object Qfile_executable_p; | |
310 | Lisp_Object Qfile_readable_p; | |
32f4334d | 311 | Lisp_Object Qfile_writable_p; |
1f8653eb RS |
312 | Lisp_Object Qfile_symlink_p; |
313 | Lisp_Object Qaccess_file; | |
32f4334d | 314 | Lisp_Object Qfile_directory_p; |
adedc71d | 315 | Lisp_Object Qfile_regular_p; |
32f4334d RS |
316 | Lisp_Object Qfile_accessible_directory_p; |
317 | Lisp_Object Qfile_modes; | |
318 | Lisp_Object Qset_file_modes; | |
319 | Lisp_Object Qfile_newer_than_file_p; | |
320 | Lisp_Object Qinsert_file_contents; | |
321 | Lisp_Object Qwrite_region; | |
322 | Lisp_Object Qverify_visited_file_modtime; | |
3ec46acd | 323 | Lisp_Object Qset_visited_file_modtime; |
32f4334d | 324 | |
49307295 | 325 | DEFUN ("find-file-name-handler", Ffind_file_name_handler, Sfind_file_name_handler, 2, 2, 0, |
8c1a1077 PJ |
326 | doc: /* Return FILENAME's handler function for OPERATION, if it has one. |
327 | Otherwise, return nil. | |
328 | A file name is handled if one of the regular expressions in | |
329 | `file-name-handler-alist' matches it. | |
330 | ||
331 | If OPERATION equals `inhibit-file-name-operation', then we ignore | |
332 | any handlers that are members of `inhibit-file-name-handlers', | |
333 | but we still do run any other handlers. This lets handlers | |
334 | use the standard functions without calling themselves recursively. */) | |
335 | (filename, operation) | |
336 | Lisp_Object filename, operation; | |
32f4334d | 337 | { |
642ef245 | 338 | /* This function must not munge the match data. */ |
204ee271 | 339 | Lisp_Object chain, inhibited_handlers, result; |
8d2ced53 | 340 | int pos = -1; |
642ef245 | 341 | |
204ee271 | 342 | result = Qnil; |
b7826503 | 343 | CHECK_STRING (filename); |
e4432095 | 344 | |
a65970a0 RS |
345 | if (EQ (operation, Vinhibit_file_name_operation)) |
346 | inhibited_handlers = Vinhibit_file_name_handlers; | |
347 | else | |
348 | inhibited_handlers = Qnil; | |
82c2d839 | 349 | |
93c30b5f | 350 | for (chain = Vfile_name_handler_alist; CONSP (chain); |
03699b14 | 351 | chain = XCDR (chain)) |
32f4334d RS |
352 | { |
353 | Lisp_Object elt; | |
03699b14 | 354 | elt = XCAR (chain); |
93c30b5f | 355 | if (CONSP (elt)) |
32f4334d RS |
356 | { |
357 | Lisp_Object string; | |
8d2ced53 | 358 | int match_pos; |
03699b14 | 359 | string = XCAR (elt); |
8d2ced53 SM |
360 | if (STRINGP (string) |
361 | && (match_pos = fast_string_match (string, filename)) > pos) | |
a65970a0 RS |
362 | { |
363 | Lisp_Object handler, tem; | |
364 | ||
03699b14 | 365 | handler = XCDR (elt); |
a65970a0 RS |
366 | tem = Fmemq (handler, inhibited_handlers); |
367 | if (NILP (tem)) | |
8d2ced53 SM |
368 | { |
369 | result = handler; | |
370 | pos = match_pos; | |
371 | } | |
a65970a0 | 372 | } |
32f4334d | 373 | } |
642ef245 JB |
374 | |
375 | QUIT; | |
32f4334d | 376 | } |
8d2ced53 | 377 | return result; |
32f4334d RS |
378 | } |
379 | \f | |
570d7624 | 380 | DEFUN ("file-name-directory", Ffile_name_directory, Sfile_name_directory, |
8c1a1077 PJ |
381 | 1, 1, 0, |
382 | doc: /* Return the directory component in file name FILENAME. | |
383 | Return nil if FILENAME does not include a directory. | |
384 | Otherwise return a directory spec. | |
385 | Given a Unix syntax file name, returns a string ending in slash; | |
386 | on VMS, perhaps instead a string ending in `:', `]' or `>'. */) | |
387 | (filename) | |
3b7f6e60 | 388 | Lisp_Object filename; |
570d7624 JB |
389 | { |
390 | register unsigned char *beg; | |
391 | register unsigned char *p; | |
0bf2eed2 | 392 | Lisp_Object handler; |
570d7624 | 393 | |
b7826503 | 394 | CHECK_STRING (filename); |
570d7624 | 395 | |
0bf2eed2 RS |
396 | /* If the file name has special constructs in it, |
397 | call the corresponding file handler. */ | |
3b7f6e60 | 398 | handler = Ffind_file_name_handler (filename, Qfile_name_directory); |
0bf2eed2 | 399 | if (!NILP (handler)) |
3b7f6e60 | 400 | return call2 (handler, Qfile_name_directory, filename); |
0bf2eed2 | 401 | |
4c3c22f3 | 402 | #ifdef FILE_SYSTEM_CASE |
3b7f6e60 | 403 | filename = FILE_SYSTEM_CASE (filename); |
4c3c22f3 | 404 | #endif |
3b7f6e60 | 405 | beg = XSTRING (filename)->data; |
199607e4 RS |
406 | #ifdef DOS_NT |
407 | beg = strcpy (alloca (strlen (beg) + 1), beg); | |
408 | #endif | |
fc932ac6 | 409 | p = beg + STRING_BYTES (XSTRING (filename)); |
570d7624 | 410 | |
199607e4 | 411 | while (p != beg && !IS_DIRECTORY_SEP (p[-1]) |
570d7624 JB |
412 | #ifdef VMS |
413 | && p[-1] != ':' && p[-1] != ']' && p[-1] != '>' | |
414 | #endif /* VMS */ | |
199607e4 | 415 | #ifdef DOS_NT |
ba14e174 RS |
416 | /* only recognise drive specifier at the beginning */ |
417 | && !(p[-1] == ':' | |
418 | /* handle the "/:d:foo" and "/:foo" cases correctly */ | |
419 | && ((p == beg + 2 && !IS_DIRECTORY_SEP (*beg)) | |
420 | || (p == beg + 4 && IS_DIRECTORY_SEP (*beg)))) | |
199607e4 | 421 | #endif |
570d7624 JB |
422 | ) p--; |
423 | ||
424 | if (p == beg) | |
425 | return Qnil; | |
5e570b75 | 426 | #ifdef DOS_NT |
4c3c22f3 | 427 | /* Expansion of "c:" to drive and default directory. */ |
ba14e174 | 428 | if (p[-1] == ':') |
4c3c22f3 | 429 | { |
4c3c22f3 | 430 | /* MAXPATHLEN+1 is guaranteed to be enough space for getdefdir. */ |
199607e4 | 431 | unsigned char *res = alloca (MAXPATHLEN + 1); |
ba14e174 RS |
432 | unsigned char *r = res; |
433 | ||
434 | if (p == beg + 4 && IS_DIRECTORY_SEP (*beg) && beg[1] == ':') | |
435 | { | |
436 | strncpy (res, beg, 2); | |
437 | beg += 2; | |
438 | r += 2; | |
439 | } | |
440 | ||
441 | if (getdefdir (toupper (*beg) - 'A' + 1, r)) | |
4c3c22f3 | 442 | { |
199607e4 | 443 | if (!IS_DIRECTORY_SEP (res[strlen (res) - 1])) |
4c3c22f3 RS |
444 | strcat (res, "/"); |
445 | beg = res; | |
446 | p = beg + strlen (beg); | |
447 | } | |
448 | } | |
199607e4 | 449 | CORRECT_DIR_SEPS (beg); |
5e570b75 | 450 | #endif /* DOS_NT */ |
60d67b83 RS |
451 | |
452 | if (STRING_MULTIBYTE (filename)) | |
453 | return make_string (beg, p - beg); | |
454 | return make_unibyte_string (beg, p - beg); | |
570d7624 JB |
455 | } |
456 | ||
60d67b83 RS |
457 | DEFUN ("file-name-nondirectory", Ffile_name_nondirectory, |
458 | Sfile_name_nondirectory, 1, 1, 0, | |
8c1a1077 PJ |
459 | doc: /* Return file name FILENAME sans its directory. |
460 | For example, in a Unix-syntax file name, | |
461 | this is everything after the last slash, | |
462 | or the entire name if it contains no slash. */) | |
463 | (filename) | |
3b7f6e60 | 464 | Lisp_Object filename; |
570d7624 JB |
465 | { |
466 | register unsigned char *beg, *p, *end; | |
0bf2eed2 | 467 | Lisp_Object handler; |
570d7624 | 468 | |
b7826503 | 469 | CHECK_STRING (filename); |
570d7624 | 470 | |
0bf2eed2 RS |
471 | /* If the file name has special constructs in it, |
472 | call the corresponding file handler. */ | |
3b7f6e60 | 473 | handler = Ffind_file_name_handler (filename, Qfile_name_nondirectory); |
0bf2eed2 | 474 | if (!NILP (handler)) |
3b7f6e60 | 475 | return call2 (handler, Qfile_name_nondirectory, filename); |
0bf2eed2 | 476 | |
3b7f6e60 | 477 | beg = XSTRING (filename)->data; |
fc932ac6 | 478 | end = p = beg + STRING_BYTES (XSTRING (filename)); |
570d7624 | 479 | |
199607e4 | 480 | while (p != beg && !IS_DIRECTORY_SEP (p[-1]) |
570d7624 JB |
481 | #ifdef VMS |
482 | && p[-1] != ':' && p[-1] != ']' && p[-1] != '>' | |
483 | #endif /* VMS */ | |
199607e4 RS |
484 | #ifdef DOS_NT |
485 | /* only recognise drive specifier at beginning */ | |
ba14e174 RS |
486 | && !(p[-1] == ':' |
487 | /* handle the "/:d:foo" case correctly */ | |
488 | && (p == beg + 2 || (p == beg + 4 && IS_DIRECTORY_SEP (*beg)))) | |
199607e4 | 489 | #endif |
60d67b83 RS |
490 | ) |
491 | p--; | |
570d7624 | 492 | |
60d67b83 RS |
493 | if (STRING_MULTIBYTE (filename)) |
494 | return make_string (p, end - p); | |
495 | return make_unibyte_string (p, end - p); | |
570d7624 | 496 | } |
642ef245 | 497 | |
60d67b83 RS |
498 | DEFUN ("unhandled-file-name-directory", Funhandled_file_name_directory, |
499 | Sunhandled_file_name_directory, 1, 1, 0, | |
8c1a1077 PJ |
500 | doc: /* Return a directly usable directory name somehow associated with FILENAME. |
501 | A `directly usable' directory name is one that may be used without the | |
502 | intervention of any file handler. | |
503 | If FILENAME is a directly usable file itself, return | |
504 | \(file-name-directory FILENAME). | |
505 | The `call-process' and `start-process' functions use this function to | |
506 | get a current directory to run processes in. */) | |
507 | (filename) | |
508 | Lisp_Object filename; | |
642ef245 JB |
509 | { |
510 | Lisp_Object handler; | |
511 | ||
512 | /* If the file name has special constructs in it, | |
513 | call the corresponding file handler. */ | |
49307295 | 514 | handler = Ffind_file_name_handler (filename, Qunhandled_file_name_directory); |
642ef245 JB |
515 | if (!NILP (handler)) |
516 | return call2 (handler, Qunhandled_file_name_directory, filename); | |
517 | ||
518 | return Ffile_name_directory (filename); | |
519 | } | |
520 | ||
570d7624 JB |
521 | \f |
522 | char * | |
523 | file_name_as_directory (out, in) | |
524 | char *out, *in; | |
525 | { | |
526 | int size = strlen (in) - 1; | |
527 | ||
528 | strcpy (out, in); | |
529 | ||
8aa3a244 RS |
530 | if (size < 0) |
531 | { | |
154a307d KH |
532 | out[0] = '.'; |
533 | out[1] = '/'; | |
534 | out[2] = 0; | |
8aa3a244 RS |
535 | return out; |
536 | } | |
537 | ||
570d7624 JB |
538 | #ifdef VMS |
539 | /* Is it already a directory string? */ | |
540 | if (in[size] == ':' || in[size] == ']' || in[size] == '>') | |
541 | return out; | |
542 | /* Is it a VMS directory file name? If so, hack VMS syntax. */ | |
543 | else if (! index (in, '/') | |
544 | && ((size > 3 && ! strcmp (&in[size - 3], ".DIR")) | |
545 | || (size > 3 && ! strcmp (&in[size - 3], ".dir")) | |
546 | || (size > 5 && (! strncmp (&in[size - 5], ".DIR", 4) | |
547 | || ! strncmp (&in[size - 5], ".dir", 4)) | |
548 | && (in[size - 1] == '.' || in[size - 1] == ';') | |
549 | && in[size] == '1'))) | |
550 | { | |
551 | register char *p, *dot; | |
552 | char brack; | |
553 | ||
554 | /* x.dir -> [.x] | |
555 | dir:x.dir --> dir:[x] | |
556 | dir:[x]y.dir --> dir:[x.y] */ | |
557 | p = in + size; | |
558 | while (p != in && *p != ':' && *p != '>' && *p != ']') p--; | |
559 | if (p != in) | |
560 | { | |
561 | strncpy (out, in, p - in); | |
562 | out[p - in] = '\0'; | |
563 | if (*p == ':') | |
564 | { | |
565 | brack = ']'; | |
566 | strcat (out, ":["); | |
567 | } | |
568 | else | |
569 | { | |
570 | brack = *p; | |
571 | strcat (out, "."); | |
572 | } | |
573 | p++; | |
574 | } | |
575 | else | |
576 | { | |
577 | brack = ']'; | |
578 | strcpy (out, "[."); | |
579 | } | |
bfb61299 JB |
580 | dot = index (p, '.'); |
581 | if (dot) | |
570d7624 JB |
582 | { |
583 | /* blindly remove any extension */ | |
584 | size = strlen (out) + (dot - p); | |
585 | strncat (out, p, dot - p); | |
586 | } | |
587 | else | |
588 | { | |
589 | strcat (out, p); | |
590 | size = strlen (out); | |
591 | } | |
592 | out[size++] = brack; | |
593 | out[size] = '\0'; | |
594 | } | |
595 | #else /* not VMS */ | |
596 | /* For Unix syntax, Append a slash if necessary */ | |
199607e4 | 597 | if (!IS_DIRECTORY_SEP (out[size])) |
5e570b75 RS |
598 | { |
599 | out[size + 1] = DIRECTORY_SEP; | |
600 | out[size + 2] = '\0'; | |
601 | } | |
199607e4 RS |
602 | #ifdef DOS_NT |
603 | CORRECT_DIR_SEPS (out); | |
604 | #endif | |
570d7624 JB |
605 | #endif /* not VMS */ |
606 | return out; | |
607 | } | |
608 | ||
609 | DEFUN ("file-name-as-directory", Ffile_name_as_directory, | |
610 | Sfile_name_as_directory, 1, 1, 0, | |
8c1a1077 PJ |
611 | doc: /* Return a string representing file FILENAME interpreted as a directory. |
612 | This operation exists because a directory is also a file, but its name as | |
613 | a directory is different from its name as a file. | |
614 | The result can be used as the value of `default-directory' | |
615 | or passed as second argument to `expand-file-name'. | |
616 | For a Unix-syntax file name, just appends a slash. | |
617 | On VMS, converts \"[X]FOO.DIR\" to \"[X.FOO]\", etc. */) | |
618 | (file) | |
570d7624 JB |
619 | Lisp_Object file; |
620 | { | |
621 | char *buf; | |
0bf2eed2 | 622 | Lisp_Object handler; |
570d7624 | 623 | |
b7826503 | 624 | CHECK_STRING (file); |
265a9e55 | 625 | if (NILP (file)) |
570d7624 | 626 | return Qnil; |
0bf2eed2 RS |
627 | |
628 | /* If the file name has special constructs in it, | |
629 | call the corresponding file handler. */ | |
49307295 | 630 | handler = Ffind_file_name_handler (file, Qfile_name_as_directory); |
0bf2eed2 RS |
631 | if (!NILP (handler)) |
632 | return call2 (handler, Qfile_name_as_directory, file); | |
633 | ||
fc932ac6 | 634 | buf = (char *) alloca (STRING_BYTES (XSTRING (file)) + 10); |
570d7624 JB |
635 | return build_string (file_name_as_directory (buf, XSTRING (file)->data)); |
636 | } | |
637 | \f | |
638 | /* | |
639 | * Convert from directory name to filename. | |
640 | * On VMS: | |
641 | * xyzzy:[mukesh.emacs] => xyzzy:[mukesh]emacs.dir.1 | |
642 | * xyzzy:[mukesh] => xyzzy:[000000]mukesh.dir.1 | |
199607e4 | 643 | * On UNIX, it's simple: just make sure there isn't a terminating / |
570d7624 JB |
644 | |
645 | * Value is nonzero if the string output is different from the input. | |
646 | */ | |
647 | ||
dfcf069d | 648 | int |
570d7624 JB |
649 | directory_file_name (src, dst) |
650 | char *src, *dst; | |
651 | { | |
652 | long slen; | |
653 | #ifdef VMS | |
654 | long rlen; | |
655 | char * ptr, * rptr; | |
656 | char bracket; | |
657 | struct FAB fab = cc$rms_fab; | |
658 | struct NAM nam = cc$rms_nam; | |
659 | char esa[NAM$C_MAXRSS]; | |
660 | #endif /* VMS */ | |
661 | ||
662 | slen = strlen (src); | |
663 | #ifdef VMS | |
664 | if (! index (src, '/') | |
665 | && (src[slen - 1] == ']' | |
666 | || src[slen - 1] == ':' | |
667 | || src[slen - 1] == '>')) | |
668 | { | |
669 | /* VMS style - convert [x.y.z] to [x.y]z, [x] to [000000]x */ | |
670 | fab.fab$l_fna = src; | |
671 | fab.fab$b_fns = slen; | |
672 | fab.fab$l_nam = &nam; | |
673 | fab.fab$l_fop = FAB$M_NAM; | |
674 | ||
675 | nam.nam$l_esa = esa; | |
676 | nam.nam$b_ess = sizeof esa; | |
677 | nam.nam$b_nop |= NAM$M_SYNCHK; | |
678 | ||
679 | /* We call SYS$PARSE to handle such things as [--] for us. */ | |
199607e4 | 680 | if (SYS$PARSE (&fab, 0, 0) == RMS$_NORMAL) |
570d7624 JB |
681 | { |
682 | slen = nam.nam$b_esl; | |
683 | if (esa[slen - 1] == ';' && esa[slen - 2] == '.') | |
684 | slen -= 2; | |
685 | esa[slen] = '\0'; | |
686 | src = esa; | |
687 | } | |
688 | if (src[slen - 1] != ']' && src[slen - 1] != '>') | |
689 | { | |
690 | /* what about when we have logical_name:???? */ | |
691 | if (src[slen - 1] == ':') | |
5e570b75 | 692 | { /* Xlate logical name and see what we get */ |
570d7624 JB |
693 | ptr = strcpy (dst, src); /* upper case for getenv */ |
694 | while (*ptr) | |
695 | { | |
696 | if ('a' <= *ptr && *ptr <= 'z') | |
697 | *ptr -= 040; | |
698 | ptr++; | |
699 | } | |
5e570b75 | 700 | dst[slen - 1] = 0; /* remove colon */ |
570d7624 JB |
701 | if (!(src = egetenv (dst))) |
702 | return 0; | |
703 | /* should we jump to the beginning of this procedure? | |
704 | Good points: allows us to use logical names that xlate | |
705 | to Unix names, | |
706 | Bad points: can be a problem if we just translated to a device | |
707 | name... | |
708 | For now, I'll punt and always expect VMS names, and hope for | |
709 | the best! */ | |
710 | slen = strlen (src); | |
711 | if (src[slen - 1] != ']' && src[slen - 1] != '>') | |
712 | { /* no recursion here! */ | |
713 | strcpy (dst, src); | |
714 | return 0; | |
715 | } | |
716 | } | |
717 | else | |
5e570b75 | 718 | { /* not a directory spec */ |
570d7624 JB |
719 | strcpy (dst, src); |
720 | return 0; | |
721 | } | |
722 | } | |
723 | bracket = src[slen - 1]; | |
724 | ||
725 | /* If bracket is ']' or '>', bracket - 2 is the corresponding | |
726 | opening bracket. */ | |
bfb61299 JB |
727 | ptr = index (src, bracket - 2); |
728 | if (ptr == 0) | |
570d7624 JB |
729 | { /* no opening bracket */ |
730 | strcpy (dst, src); | |
731 | return 0; | |
732 | } | |
733 | if (!(rptr = rindex (src, '.'))) | |
734 | rptr = ptr; | |
735 | slen = rptr - src; | |
736 | strncpy (dst, src, slen); | |
737 | dst[slen] = '\0'; | |
738 | if (*rptr == '.') | |
739 | { | |
740 | dst[slen++] = bracket; | |
741 | dst[slen] = '\0'; | |
742 | } | |
743 | else | |
744 | { | |
745 | /* If we have the top-level of a rooted directory (i.e. xx:[000000]), | |
746 | then translate the device and recurse. */ | |
747 | if (dst[slen - 1] == ':' | |
5e570b75 | 748 | && dst[slen - 2] != ':' /* skip decnet nodes */ |
199607e4 | 749 | && strcmp (src + slen, "[000000]") == 0) |
570d7624 JB |
750 | { |
751 | dst[slen - 1] = '\0'; | |
752 | if ((ptr = egetenv (dst)) | |
753 | && (rlen = strlen (ptr) - 1) > 0 | |
754 | && (ptr[rlen] == ']' || ptr[rlen] == '>') | |
755 | && ptr[rlen - 1] == '.') | |
756 | { | |
72b21817 RS |
757 | char * buf = (char *) alloca (strlen (ptr) + 1); |
758 | strcpy (buf, ptr); | |
759 | buf[rlen - 1] = ']'; | |
760 | buf[rlen] = '\0'; | |
761 | return directory_file_name (buf, dst); | |
570d7624 JB |
762 | } |
763 | else | |
764 | dst[slen - 1] = ':'; | |
765 | } | |
766 | strcat (dst, "[000000]"); | |
767 | slen += 8; | |
768 | } | |
769 | rptr++; | |
770 | rlen = strlen (rptr) - 1; | |
771 | strncat (dst, rptr, rlen); | |
772 | dst[slen + rlen] = '\0'; | |
773 | strcat (dst, ".DIR.1"); | |
774 | return 1; | |
775 | } | |
776 | #endif /* VMS */ | |
777 | /* Process as Unix format: just remove any final slash. | |
778 | But leave "/" unchanged; do not change it to "". */ | |
779 | strcpy (dst, src); | |
125feee8 RS |
780 | #ifdef APOLLO |
781 | /* Handle // as root for apollo's. */ | |
782 | if ((slen > 2 && dst[slen - 1] == '/') | |
783 | || (slen > 1 && dst[0] != '/' && dst[slen - 1] == '/')) | |
784 | dst[slen - 1] = 0; | |
785 | #else | |
199607e4 | 786 | if (slen > 1 |
5e570b75 | 787 | && IS_DIRECTORY_SEP (dst[slen - 1]) |
4592782e RS |
788 | #ifdef DOS_NT |
789 | && !IS_ANY_SEP (dst[slen - 2]) | |
790 | #endif | |
791 | ) | |
570d7624 | 792 | dst[slen - 1] = 0; |
199607e4 RS |
793 | #endif |
794 | #ifdef DOS_NT | |
795 | CORRECT_DIR_SEPS (dst); | |
125feee8 | 796 | #endif |
570d7624 JB |
797 | return 1; |
798 | } | |
799 | ||
800 | DEFUN ("directory-file-name", Fdirectory_file_name, Sdirectory_file_name, | |
8c1a1077 PJ |
801 | 1, 1, 0, |
802 | doc: /* Returns the file name of the directory named DIRECTORY. | |
803 | This is the name of the file that holds the data for the directory DIRECTORY. | |
804 | This operation exists because a directory is also a file, but its name as | |
805 | a directory is different from its name as a file. | |
806 | In Unix-syntax, this function just removes the final slash. | |
807 | On VMS, given a VMS-syntax directory name such as \"[X.Y]\", | |
808 | it returns a file name such as \"[X]Y.DIR.1\". */) | |
809 | (directory) | |
570d7624 JB |
810 | Lisp_Object directory; |
811 | { | |
812 | char *buf; | |
0bf2eed2 | 813 | Lisp_Object handler; |
570d7624 | 814 | |
b7826503 | 815 | CHECK_STRING (directory); |
570d7624 | 816 | |
265a9e55 | 817 | if (NILP (directory)) |
570d7624 | 818 | return Qnil; |
0bf2eed2 RS |
819 | |
820 | /* If the file name has special constructs in it, | |
821 | call the corresponding file handler. */ | |
49307295 | 822 | handler = Ffind_file_name_handler (directory, Qdirectory_file_name); |
0bf2eed2 RS |
823 | if (!NILP (handler)) |
824 | return call2 (handler, Qdirectory_file_name, directory); | |
825 | ||
570d7624 JB |
826 | #ifdef VMS |
827 | /* 20 extra chars is insufficient for VMS, since we might perform a | |
828 | logical name translation. an equivalence string can be up to 255 | |
829 | chars long, so grab that much extra space... - sss */ | |
fc932ac6 | 830 | buf = (char *) alloca (STRING_BYTES (XSTRING (directory)) + 20 + 255); |
570d7624 | 831 | #else |
fc932ac6 | 832 | buf = (char *) alloca (STRING_BYTES (XSTRING (directory)) + 20); |
570d7624 JB |
833 | #endif |
834 | directory_file_name (XSTRING (directory)->data, buf); | |
835 | return build_string (buf); | |
836 | } | |
837 | ||
3ce839e4 RS |
838 | static char make_temp_name_tbl[64] = |
839 | { | |
840 | 'A','B','C','D','E','F','G','H', | |
841 | 'I','J','K','L','M','N','O','P', | |
842 | 'Q','R','S','T','U','V','W','X', | |
843 | 'Y','Z','a','b','c','d','e','f', | |
844 | 'g','h','i','j','k','l','m','n', | |
845 | 'o','p','q','r','s','t','u','v', | |
846 | 'w','x','y','z','0','1','2','3', | |
847 | '4','5','6','7','8','9','-','_' | |
848 | }; | |
cb613bb8 | 849 | |
3ce839e4 RS |
850 | static unsigned make_temp_name_count, make_temp_name_count_initialized_p; |
851 | ||
cb613bb8 GM |
852 | /* Value is a temporary file name starting with PREFIX, a string. |
853 | ||
854 | The Emacs process number forms part of the result, so there is | |
855 | no danger of generating a name being used by another process. | |
856 | In addition, this function makes an attempt to choose a name | |
857 | which has no existing file. To make this work, PREFIX should be | |
858 | an absolute file name. | |
859 | ||
860 | BASE64_P non-zero means add the pid as 3 characters in base64 | |
861 | encoding. In this case, 6 characters will be added to PREFIX to | |
862 | form the file name. Otherwise, if Emacs is running on a system | |
863 | with long file names, add the pid as a decimal number. | |
864 | ||
865 | This function signals an error if no unique file name could be | |
866 | generated. */ | |
867 | ||
868 | Lisp_Object | |
869 | make_temp_name (prefix, base64_p) | |
570d7624 | 870 | Lisp_Object prefix; |
cb613bb8 | 871 | int base64_p; |
570d7624 JB |
872 | { |
873 | Lisp_Object val; | |
3ce839e4 RS |
874 | int len; |
875 | int pid; | |
876 | unsigned char *p, *data; | |
877 | char pidbuf[20]; | |
878 | int pidlen; | |
cb613bb8 | 879 | |
b7826503 | 880 | CHECK_STRING (prefix); |
3ce839e4 RS |
881 | |
882 | /* VAL is created by adding 6 characters to PREFIX. The first | |
883 | three are the PID of this process, in base 64, and the second | |
884 | three are incremented if the file already exists. This ensures | |
885 | 262144 unique file names per PID per PREFIX. */ | |
886 | ||
887 | pid = (int) getpid (); | |
888 | ||
cb613bb8 GM |
889 | if (base64_p) |
890 | { | |
891 | pidbuf[0] = make_temp_name_tbl[pid & 63], pid >>= 6; | |
892 | pidbuf[1] = make_temp_name_tbl[pid & 63], pid >>= 6; | |
893 | pidbuf[2] = make_temp_name_tbl[pid & 63], pid >>= 6; | |
894 | pidlen = 3; | |
895 | } | |
896 | else | |
897 | { | |
3ce839e4 | 898 | #ifdef HAVE_LONG_FILE_NAMES |
cb613bb8 GM |
899 | sprintf (pidbuf, "%d", pid); |
900 | pidlen = strlen (pidbuf); | |
3a3bfb18 | 901 | #else |
cb613bb8 GM |
902 | pidbuf[0] = make_temp_name_tbl[pid & 63], pid >>= 6; |
903 | pidbuf[1] = make_temp_name_tbl[pid & 63], pid >>= 6; | |
904 | pidbuf[2] = make_temp_name_tbl[pid & 63], pid >>= 6; | |
905 | pidlen = 3; | |
3ce839e4 | 906 | #endif |
cb613bb8 GM |
907 | } |
908 | ||
3ce839e4 RS |
909 | len = XSTRING (prefix)->size; |
910 | val = make_uninit_string (len + 3 + pidlen); | |
911 | data = XSTRING (val)->data; | |
912 | bcopy(XSTRING (prefix)->data, data, len); | |
913 | p = data + len; | |
914 | ||
915 | bcopy (pidbuf, p, pidlen); | |
916 | p += pidlen; | |
917 | ||
918 | /* Here we try to minimize useless stat'ing when this function is | |
919 | invoked many times successively with the same PREFIX. We achieve | |
920 | this by initializing count to a random value, and incrementing it | |
f6a492a9 RS |
921 | afterwards. |
922 | ||
923 | We don't want make-temp-name to be called while dumping, | |
924 | because then make_temp_name_count_initialized_p would get set | |
925 | and then make_temp_name_count would not be set when Emacs starts. */ | |
926 | ||
3ce839e4 RS |
927 | if (!make_temp_name_count_initialized_p) |
928 | { | |
929 | make_temp_name_count = (unsigned) time (NULL); | |
930 | make_temp_name_count_initialized_p = 1; | |
931 | } | |
932 | ||
933 | while (1) | |
934 | { | |
935 | struct stat ignored; | |
8a7777fc | 936 | unsigned num = make_temp_name_count; |
3ce839e4 RS |
937 | |
938 | p[0] = make_temp_name_tbl[num & 63], num >>= 6; | |
939 | p[1] = make_temp_name_tbl[num & 63], num >>= 6; | |
940 | p[2] = make_temp_name_tbl[num & 63], num >>= 6; | |
941 | ||
8a7777fc RS |
942 | /* Poor man's congruential RN generator. Replace with |
943 | ++make_temp_name_count for debugging. */ | |
944 | make_temp_name_count += 25229; | |
945 | make_temp_name_count %= 225307; | |
946 | ||
3ce839e4 RS |
947 | if (stat (data, &ignored) < 0) |
948 | { | |
949 | /* We want to return only if errno is ENOENT. */ | |
950 | if (errno == ENOENT) | |
951 | return val; | |
952 | else | |
953 | /* The error here is dubious, but there is little else we | |
954 | can do. The alternatives are to return nil, which is | |
955 | as bad as (and in many cases worse than) throwing the | |
956 | error, or to ignore the error, which will likely result | |
8a7777fc RS |
957 | in looping through 225307 stat's, which is not only |
958 | dog-slow, but also useless since it will fallback to | |
959 | the errow below, anyway. */ | |
9869bb0b | 960 | report_file_error ("Cannot create temporary name for prefix", |
3ce839e4 RS |
961 | Fcons (prefix, Qnil)); |
962 | /* not reached */ | |
963 | } | |
964 | } | |
965 | ||
966 | error ("Cannot create temporary name for prefix `%s'", | |
967 | XSTRING (prefix)->data); | |
968 | return Qnil; | |
570d7624 | 969 | } |
3ce839e4 | 970 | |
cb613bb8 GM |
971 | |
972 | DEFUN ("make-temp-name", Fmake_temp_name, Smake_temp_name, 1, 1, 0, | |
8c1a1077 PJ |
973 | doc: /* Generate temporary file name (string) starting with PREFIX (a string). |
974 | The Emacs process number forms part of the result, | |
975 | so there is no danger of generating a name being used by another process. | |
976 | ||
977 | In addition, this function makes an attempt to choose a name | |
978 | which has no existing file. To make this work, | |
979 | PREFIX should be an absolute file name. | |
980 | ||
981 | There is a race condition between calling `make-temp-name' and creating the | |
982 | file which opens all kinds of security holes. For that reason, you should | |
983 | probably use `make-temp-file' instead. */) | |
984 | (prefix) | |
cb613bb8 GM |
985 | Lisp_Object prefix; |
986 | { | |
987 | return make_temp_name (prefix, 0); | |
988 | } | |
989 | ||
990 | ||
570d7624 JB |
991 | \f |
992 | DEFUN ("expand-file-name", Fexpand_file_name, Sexpand_file_name, 1, 2, 0, | |
8c1a1077 PJ |
993 | doc: /* Convert filename NAME to absolute, and canonicalize it. |
994 | Second arg DEFAULT-DIRECTORY is directory to start with if NAME is relative | |
995 | (does not start with slash); if DEFAULT-DIRECTORY is nil or missing, | |
996 | the current buffer's value of default-directory is used. | |
997 | File name components that are `.' are removed, and | |
998 | so are file name components followed by `..', along with the `..' itself; | |
999 | note that these simplifications are done without checking the resulting | |
1000 | file names in the file system. | |
1001 | An initial `~/' expands to your home directory. | |
1002 | An initial `~USER/' expands to USER's home directory. | |
1003 | See also the function `substitute-in-file-name'. */) | |
1004 | (name, default_directory) | |
3b7f6e60 | 1005 | Lisp_Object name, default_directory; |
570d7624 JB |
1006 | { |
1007 | unsigned char *nm; | |
199607e4 | 1008 | |
570d7624 JB |
1009 | register unsigned char *newdir, *p, *o; |
1010 | int tlen; | |
1011 | unsigned char *target; | |
1012 | struct passwd *pw; | |
570d7624 JB |
1013 | #ifdef VMS |
1014 | unsigned char * colon = 0; | |
1015 | unsigned char * close = 0; | |
1016 | unsigned char * slash = 0; | |
1017 | unsigned char * brack = 0; | |
1018 | int lbrack = 0, rbrack = 0; | |
1019 | int dots = 0; | |
1020 | #endif /* VMS */ | |
5e570b75 | 1021 | #ifdef DOS_NT |
199607e4 | 1022 | int drive = 0; |
9a1dc3be | 1023 | int collapse_newdir = 1; |
f0f95d31 | 1024 | int is_escaped = 0; |
5e570b75 | 1025 | #endif /* DOS_NT */ |
199607e4 | 1026 | int length; |
0bf2eed2 | 1027 | Lisp_Object handler; |
199607e4 | 1028 | |
b7826503 | 1029 | CHECK_STRING (name); |
570d7624 | 1030 | |
0bf2eed2 RS |
1031 | /* If the file name has special constructs in it, |
1032 | call the corresponding file handler. */ | |
49307295 | 1033 | handler = Ffind_file_name_handler (name, Qexpand_file_name); |
0bf2eed2 | 1034 | if (!NILP (handler)) |
3b7f6e60 | 1035 | return call3 (handler, Qexpand_file_name, name, default_directory); |
58fc9587 | 1036 | |
3b7f6e60 EN |
1037 | /* Use the buffer's default-directory if DEFAULT_DIRECTORY is omitted. */ |
1038 | if (NILP (default_directory)) | |
1039 | default_directory = current_buffer->directory; | |
82330e7f | 1040 | if (! STRINGP (default_directory)) |
dd693537 EZ |
1041 | { |
1042 | #ifdef DOS_NT | |
1043 | /* "/" is not considered a root directory on DOS_NT, so using "/" | |
1044 | here causes an infinite recursion in, e.g., the following: | |
1045 | ||
1046 | (let (default-directory) | |
1047 | (expand-file-name "a")) | |
1048 | ||
1049 | To avoid this, we set default_directory to the root of the | |
1050 | current drive. */ | |
1051 | extern char *emacs_root_dir (void); | |
1052 | ||
1053 | default_directory = build_string (emacs_root_dir ()); | |
1054 | #else | |
1055 | default_directory = build_string ("/"); | |
1056 | #endif | |
1057 | } | |
58fc9587 | 1058 | |
3b7f6e60 | 1059 | if (!NILP (default_directory)) |
273e0829 | 1060 | { |
3b7f6e60 | 1061 | handler = Ffind_file_name_handler (default_directory, Qexpand_file_name); |
273e0829 | 1062 | if (!NILP (handler)) |
3b7f6e60 | 1063 | return call3 (handler, Qexpand_file_name, name, default_directory); |
273e0829 | 1064 | } |
0bf2eed2 | 1065 | |
3b7f6e60 | 1066 | o = XSTRING (default_directory)->data; |
5e570b75 | 1067 | |
3b7f6e60 | 1068 | /* Make sure DEFAULT_DIRECTORY is properly expanded. |
f14b1c68 | 1069 | It would be better to do this down below where we actually use |
3b7f6e60 | 1070 | default_directory. Unfortunately, calling Fexpand_file_name recursively |
f14b1c68 JB |
1071 | could invoke GC, and the strings might be relocated. This would |
1072 | be annoying because we have pointers into strings lying around | |
1073 | that would need adjusting, and people would add new pointers to | |
1074 | the code and forget to adjust them, resulting in intermittent bugs. | |
4ad827c5 RS |
1075 | Putting this call here avoids all that crud. |
1076 | ||
1077 | The EQ test avoids infinite recursion. */ | |
3b7f6e60 | 1078 | if (! NILP (default_directory) && !EQ (default_directory, name) |
199607e4 RS |
1079 | /* Save time in some common cases - as long as default_directory |
1080 | is not relative, it can be canonicalized with name below (if it | |
1081 | is needed at all) without requiring it to be expanded now. */ | |
01937013 | 1082 | #ifdef DOS_NT |
199607e4 | 1083 | /* Detect MSDOS file names with drive specifiers. */ |
f0f95d31 | 1084 | && ! (IS_DRIVE (o[0]) && IS_DEVICE_SEP (o[1]) && IS_DIRECTORY_SEP (o[2])) |
199607e4 RS |
1085 | #ifdef WINDOWSNT |
1086 | /* Detect Windows file names in UNC format. */ | |
1087 | && ! (IS_DIRECTORY_SEP (o[0]) && IS_DIRECTORY_SEP (o[1])) | |
01937013 | 1088 | #endif |
199607e4 RS |
1089 | #else /* not DOS_NT */ |
1090 | /* Detect Unix absolute file names (/... alone is not absolute on | |
1091 | DOS or Windows). */ | |
1092 | && ! (IS_DIRECTORY_SEP (o[0])) | |
1093 | #endif /* not DOS_NT */ | |
1094 | ) | |
f14b1c68 JB |
1095 | { |
1096 | struct gcpro gcpro1; | |
1097 | ||
1098 | GCPRO1 (name); | |
3b7f6e60 | 1099 | default_directory = Fexpand_file_name (default_directory, Qnil); |
f14b1c68 JB |
1100 | UNGCPRO; |
1101 | } | |
1102 | ||
570d7624 JB |
1103 | #ifdef VMS |
1104 | /* Filenames on VMS are always upper case. */ | |
1105 | name = Fupcase (name); | |
1106 | #endif | |
4c3c22f3 RS |
1107 | #ifdef FILE_SYSTEM_CASE |
1108 | name = FILE_SYSTEM_CASE (name); | |
1109 | #endif | |
570d7624 JB |
1110 | |
1111 | nm = XSTRING (name)->data; | |
a5a1cc06 | 1112 | |
5e570b75 | 1113 | #ifdef DOS_NT |
199607e4 RS |
1114 | /* We will force directory separators to be either all \ or /, so make |
1115 | a local copy to modify, even if there ends up being no change. */ | |
1116 | nm = strcpy (alloca (strlen (nm) + 1), nm); | |
1117 | ||
f0f95d31 RS |
1118 | /* Note if special escape prefix is present, but remove for now. */ |
1119 | if (nm[0] == '/' && nm[1] == ':') | |
1120 | { | |
1121 | is_escaped = 1; | |
1122 | nm += 2; | |
1123 | } | |
1124 | ||
199607e4 | 1125 | /* Find and remove drive specifier if present; this makes nm absolute |
f0f95d31 RS |
1126 | even if the rest of the name appears to be relative. Only look for |
1127 | drive specifier at the beginning. */ | |
1128 | if (IS_DRIVE (nm[0]) && IS_DEVICE_SEP (nm[1])) | |
1129 | { | |
1130 | drive = nm[0]; | |
1131 | nm += 2; | |
1132 | } | |
bb1ff1f4 GV |
1133 | |
1134 | #ifdef WINDOWSNT | |
1135 | /* If we see "c://somedir", we want to strip the first slash after the | |
1136 | colon when stripping the drive letter. Otherwise, this expands to | |
1137 | "//somedir". */ | |
1138 | if (drive && IS_DIRECTORY_SEP (nm[0]) && IS_DIRECTORY_SEP (nm[1])) | |
1139 | nm++; | |
1140 | #endif /* WINDOWSNT */ | |
5e570b75 | 1141 | #endif /* DOS_NT */ |
4c3c22f3 | 1142 | |
199607e4 RS |
1143 | #ifdef WINDOWSNT |
1144 | /* Discard any previous drive specifier if nm is now in UNC format. */ | |
1145 | if (IS_DIRECTORY_SEP (nm[0]) && IS_DIRECTORY_SEP (nm[1])) | |
1146 | { | |
1147 | drive = 0; | |
1148 | } | |
1149 | #endif | |
1150 | ||
214378ec GM |
1151 | /* If nm is absolute, look for `/./' or `/../' or `//''sequences; if |
1152 | none are found, we can probably return right away. We will avoid | |
1153 | allocating a new string if name is already fully expanded. */ | |
570d7624 | 1154 | if ( |
5e570b75 | 1155 | IS_DIRECTORY_SEP (nm[0]) |
199607e4 | 1156 | #ifdef MSDOS |
f0f95d31 | 1157 | && drive && !is_escaped |
199607e4 RS |
1158 | #endif |
1159 | #ifdef WINDOWSNT | |
f0f95d31 | 1160 | && (drive || IS_DIRECTORY_SEP (nm[1])) && !is_escaped |
199607e4 | 1161 | #endif |
570d7624 JB |
1162 | #ifdef VMS |
1163 | || index (nm, ':') | |
1164 | #endif /* VMS */ | |
1165 | ) | |
1166 | { | |
f14b1c68 JB |
1167 | /* If it turns out that the filename we want to return is just a |
1168 | suffix of FILENAME, we don't need to go through and edit | |
1169 | things; we just need to construct a new string using data | |
1170 | starting at the middle of FILENAME. If we set lose to a | |
1171 | non-zero value, that means we've discovered that we can't do | |
1172 | that cool trick. */ | |
1173 | int lose = 0; | |
1174 | ||
570d7624 | 1175 | p = nm; |
570d7624 JB |
1176 | while (*p) |
1177 | { | |
199607e4 | 1178 | /* Since we know the name is absolute, we can assume that each |
c77d647e JB |
1179 | element starts with a "/". */ |
1180 | ||
c77d647e | 1181 | /* "." and ".." are hairy. */ |
5e570b75 | 1182 | if (IS_DIRECTORY_SEP (p[0]) |
c77d647e | 1183 | && p[1] == '.' |
5e570b75 | 1184 | && (IS_DIRECTORY_SEP (p[2]) |
c77d647e | 1185 | || p[2] == 0 |
5e570b75 | 1186 | || (p[2] == '.' && (IS_DIRECTORY_SEP (p[3]) |
c77d647e | 1187 | || p[3] == 0)))) |
570d7624 | 1188 | lose = 1; |
214378ec GM |
1189 | /* We want to replace multiple `/' in a row with a single |
1190 | slash. */ | |
1191 | else if (p > nm | |
1192 | && IS_DIRECTORY_SEP (p[0]) | |
1193 | && IS_DIRECTORY_SEP (p[1])) | |
1194 | lose = 1; | |
1195 | ||
570d7624 JB |
1196 | #ifdef VMS |
1197 | if (p[0] == '\\') | |
1198 | lose = 1; | |
1199 | if (p[0] == '/') { | |
1200 | /* if dev:[dir]/, move nm to / */ | |
1201 | if (!slash && p > nm && (brack || colon)) { | |
1202 | nm = (brack ? brack + 1 : colon + 1); | |
1203 | lbrack = rbrack = 0; | |
1204 | brack = 0; | |
1205 | colon = 0; | |
1206 | } | |
1207 | slash = p; | |
1208 | } | |
1209 | if (p[0] == '-') | |
1210 | #ifndef VMS4_4 | |
1211 | /* VMS pre V4.4,convert '-'s in filenames. */ | |
1212 | if (lbrack == rbrack) | |
1213 | { | |
5e570b75 | 1214 | if (dots < 2) /* this is to allow negative version numbers */ |
570d7624 JB |
1215 | p[0] = '_'; |
1216 | } | |
1217 | else | |
1218 | #endif /* VMS4_4 */ | |
1219 | if (lbrack > rbrack && | |
1220 | ((p[-1] == '.' || p[-1] == '[' || p[-1] == '<') && | |
1221 | (p[1] == '.' || p[1] == ']' || p[1] == '>'))) | |
1222 | lose = 1; | |
1223 | #ifndef VMS4_4 | |
1224 | else | |
1225 | p[0] = '_'; | |
1226 | #endif /* VMS4_4 */ | |
1227 | /* count open brackets, reset close bracket pointer */ | |
1228 | if (p[0] == '[' || p[0] == '<') | |
1229 | lbrack++, brack = 0; | |
1230 | /* count close brackets, set close bracket pointer */ | |
1231 | if (p[0] == ']' || p[0] == '>') | |
1232 | rbrack++, brack = p; | |
1233 | /* detect ][ or >< */ | |
1234 | if ((p[0] == ']' || p[0] == '>') && (p[1] == '[' || p[1] == '<')) | |
1235 | lose = 1; | |
1236 | if ((p[0] == ':' || p[0] == ']' || p[0] == '>') && p[1] == '~') | |
1237 | nm = p + 1, lose = 1; | |
1238 | if (p[0] == ':' && (colon || slash)) | |
1239 | /* if dev1:[dir]dev2:, move nm to dev2: */ | |
1240 | if (brack) | |
1241 | { | |
1242 | nm = brack + 1; | |
1243 | brack = 0; | |
1244 | } | |
199607e4 | 1245 | /* if /name/dev:, move nm to dev: */ |
570d7624 JB |
1246 | else if (slash) |
1247 | nm = slash + 1; | |
1248 | /* if node::dev:, move colon following dev */ | |
1249 | else if (colon && colon[-1] == ':') | |
1250 | colon = p; | |
1251 | /* if dev1:dev2:, move nm to dev2: */ | |
1252 | else if (colon && colon[-1] != ':') | |
1253 | { | |
1254 | nm = colon + 1; | |
1255 | colon = 0; | |
1256 | } | |
1257 | if (p[0] == ':' && !colon) | |
1258 | { | |
1259 | if (p[1] == ':') | |
1260 | p++; | |
1261 | colon = p; | |
1262 | } | |
1263 | if (lbrack == rbrack) | |
1264 | if (p[0] == ';') | |
1265 | dots = 2; | |
1266 | else if (p[0] == '.') | |
1267 | dots++; | |
1268 | #endif /* VMS */ | |
1269 | p++; | |
1270 | } | |
1271 | if (!lose) | |
1272 | { | |
1273 | #ifdef VMS | |
1274 | if (index (nm, '/')) | |
1275 | return build_string (sys_translate_unix (nm)); | |
1276 | #endif /* VMS */ | |
199607e4 RS |
1277 | #ifdef DOS_NT |
1278 | /* Make sure directories are all separated with / or \ as | |
1279 | desired, but avoid allocation of a new string when not | |
1280 | required. */ | |
1281 | CORRECT_DIR_SEPS (nm); | |
1282 | #ifdef WINDOWSNT | |
1283 | if (IS_DIRECTORY_SEP (nm[1])) | |
1284 | { | |
1285 | if (strcmp (nm, XSTRING (name)->data) != 0) | |
1286 | name = build_string (nm); | |
1287 | } | |
1288 | else | |
1289 | #endif | |
1290 | /* drive must be set, so this is okay */ | |
1291 | if (strcmp (nm - 2, XSTRING (name)->data) != 0) | |
1292 | { | |
1293 | name = make_string (nm - 2, p - nm + 2); | |
f94988a7 | 1294 | XSTRING (name)->data[0] = DRIVE_LETTER (drive); |
199607e4 RS |
1295 | XSTRING (name)->data[1] = ':'; |
1296 | } | |
1297 | return name; | |
1298 | #else /* not DOS_NT */ | |
570d7624 JB |
1299 | if (nm == XSTRING (name)->data) |
1300 | return name; | |
1301 | return build_string (nm); | |
5e570b75 | 1302 | #endif /* not DOS_NT */ |
570d7624 JB |
1303 | } |
1304 | } | |
1305 | ||
199607e4 RS |
1306 | /* At this point, nm might or might not be an absolute file name. We |
1307 | need to expand ~ or ~user if present, otherwise prefix nm with | |
1308 | default_directory if nm is not absolute, and finally collapse /./ | |
1309 | and /foo/../ sequences. | |
1310 | ||
1311 | We set newdir to be the appropriate prefix if one is needed: | |
1312 | - the relevant user directory if nm starts with ~ or ~user | |
1313 | - the specified drive's working dir (DOS/NT only) if nm does not | |
1314 | start with / | |
1315 | - the value of default_directory. | |
1316 | ||
1317 | Note that these prefixes are not guaranteed to be absolute (except | |
1318 | for the working dir of a drive). Therefore, to ensure we always | |
1319 | return an absolute name, if the final prefix is not absolute we | |
1320 | append it to the current working directory. */ | |
570d7624 JB |
1321 | |
1322 | newdir = 0; | |
1323 | ||
1324 | if (nm[0] == '~') /* prefix ~ */ | |
c77d647e | 1325 | { |
5e570b75 | 1326 | if (IS_DIRECTORY_SEP (nm[1]) |
570d7624 | 1327 | #ifdef VMS |
c77d647e | 1328 | || nm[1] == ':' |
5e570b75 | 1329 | #endif /* VMS */ |
c77d647e JB |
1330 | || nm[1] == 0) /* ~ by itself */ |
1331 | { | |
1332 | if (!(newdir = (unsigned char *) egetenv ("HOME"))) | |
1333 | newdir = (unsigned char *) ""; | |
199607e4 | 1334 | nm++; |
5e570b75 | 1335 | #ifdef DOS_NT |
9a1dc3be | 1336 | collapse_newdir = 0; |
4c3c22f3 | 1337 | #endif |
570d7624 | 1338 | #ifdef VMS |
c77d647e | 1339 | nm++; /* Don't leave the slash in nm. */ |
5e570b75 | 1340 | #endif /* VMS */ |
c77d647e JB |
1341 | } |
1342 | else /* ~user/filename */ | |
1343 | { | |
5e570b75 | 1344 | for (p = nm; *p && (!IS_DIRECTORY_SEP (*p) |
570d7624 | 1345 | #ifdef VMS |
c77d647e | 1346 | && *p != ':' |
5e570b75 | 1347 | #endif /* VMS */ |
c77d647e JB |
1348 | ); p++); |
1349 | o = (unsigned char *) alloca (p - nm + 1); | |
1350 | bcopy ((char *) nm, o, p - nm); | |
1351 | o [p - nm] = 0; | |
1352 | ||
1353 | pw = (struct passwd *) getpwnam (o + 1); | |
1354 | if (pw) | |
1355 | { | |
1356 | newdir = (unsigned char *) pw -> pw_dir; | |
570d7624 | 1357 | #ifdef VMS |
c77d647e | 1358 | nm = p + 1; /* skip the terminator */ |
570d7624 | 1359 | #else |
c77d647e | 1360 | nm = p; |
199607e4 | 1361 | #ifdef DOS_NT |
9a1dc3be | 1362 | collapse_newdir = 0; |
199607e4 | 1363 | #endif |
5e570b75 | 1364 | #endif /* VMS */ |
c77d647e | 1365 | } |
e5d77022 | 1366 | |
c77d647e JB |
1367 | /* If we don't find a user of that name, leave the name |
1368 | unchanged; don't move nm forward to p. */ | |
1369 | } | |
1370 | } | |
570d7624 | 1371 | |
5e570b75 | 1372 | #ifdef DOS_NT |
199607e4 RS |
1373 | /* On DOS and Windows, nm is absolute if a drive name was specified; |
1374 | use the drive's current directory as the prefix if needed. */ | |
1375 | if (!newdir && drive) | |
1376 | { | |
1377 | /* Get default directory if needed to make nm absolute. */ | |
1378 | if (!IS_DIRECTORY_SEP (nm[0])) | |
1379 | { | |
1380 | newdir = alloca (MAXPATHLEN + 1); | |
1381 | if (!getdefdir (toupper (drive) - 'A' + 1, newdir)) | |
1382 | newdir = NULL; | |
1383 | } | |
1384 | if (!newdir) | |
1385 | { | |
1386 | /* Either nm starts with /, or drive isn't mounted. */ | |
1387 | newdir = alloca (4); | |
f94988a7 | 1388 | newdir[0] = DRIVE_LETTER (drive); |
199607e4 RS |
1389 | newdir[1] = ':'; |
1390 | newdir[2] = '/'; | |
1391 | newdir[3] = 0; | |
1392 | } | |
1393 | } | |
5e570b75 | 1394 | #endif /* DOS_NT */ |
199607e4 RS |
1395 | |
1396 | /* Finally, if no prefix has been specified and nm is not absolute, | |
1397 | then it must be expanded relative to default_directory. */ | |
1398 | ||
34097368 | 1399 | if (1 |
199607e4 RS |
1400 | #ifndef DOS_NT |
1401 | /* /... alone is not absolute on DOS and Windows. */ | |
34097368 | 1402 | && !IS_DIRECTORY_SEP (nm[0]) |
199607e4 RS |
1403 | #endif |
1404 | #ifdef WINDOWSNT | |
34097368 | 1405 | && !(IS_DIRECTORY_SEP (nm[0]) && IS_DIRECTORY_SEP (nm[1])) |
199607e4 RS |
1406 | #endif |
1407 | #ifdef VMS | |
1408 | && !index (nm, ':') | |
1409 | #endif | |
570d7624 JB |
1410 | && !newdir) |
1411 | { | |
3b7f6e60 | 1412 | newdir = XSTRING (default_directory)->data; |
f0f95d31 RS |
1413 | #ifdef DOS_NT |
1414 | /* Note if special escape prefix is present, but remove for now. */ | |
1415 | if (newdir[0] == '/' && newdir[1] == ':') | |
1416 | { | |
1417 | is_escaped = 1; | |
1418 | newdir += 2; | |
1419 | } | |
1420 | #endif | |
570d7624 JB |
1421 | } |
1422 | ||
5e570b75 | 1423 | #ifdef DOS_NT |
199607e4 RS |
1424 | if (newdir) |
1425 | { | |
1426 | /* First ensure newdir is an absolute name. */ | |
1427 | if ( | |
1428 | /* Detect MSDOS file names with drive specifiers. */ | |
1429 | ! (IS_DRIVE (newdir[0]) | |
1430 | && IS_DEVICE_SEP (newdir[1]) && IS_DIRECTORY_SEP (newdir[2])) | |
1431 | #ifdef WINDOWSNT | |
1432 | /* Detect Windows file names in UNC format. */ | |
1433 | && ! (IS_DIRECTORY_SEP (newdir[0]) && IS_DIRECTORY_SEP (newdir[1])) | |
1434 | #endif | |
1435 | ) | |
1436 | { | |
1437 | /* Effectively, let newdir be (expand-file-name newdir cwd). | |
1438 | Because of the admonition against calling expand-file-name | |
1439 | when we have pointers into lisp strings, we accomplish this | |
1440 | indirectly by prepending newdir to nm if necessary, and using | |
1441 | cwd (or the wd of newdir's drive) as the new newdir. */ | |
1442 | ||
1443 | if (IS_DRIVE (newdir[0]) && newdir[1] == ':') | |
1444 | { | |
1445 | drive = newdir[0]; | |
1446 | newdir += 2; | |
1447 | } | |
1448 | if (!IS_DIRECTORY_SEP (nm[0])) | |
1449 | { | |
1450 | char * tmp = alloca (strlen (newdir) + strlen (nm) + 2); | |
1451 | file_name_as_directory (tmp, newdir); | |
1452 | strcat (tmp, nm); | |
1453 | nm = tmp; | |
1454 | } | |
1455 | newdir = alloca (MAXPATHLEN + 1); | |
1456 | if (drive) | |
1457 | { | |
1458 | if (!getdefdir (toupper (drive) - 'A' + 1, newdir)) | |
1459 | newdir = "/"; | |
1460 | } | |
1461 | else | |
1462 | getwd (newdir); | |
1463 | } | |
1464 | ||
1465 | /* Strip off drive name from prefix, if present. */ | |
1466 | if (IS_DRIVE (newdir[0]) && newdir[1] == ':') | |
1467 | { | |
1468 | drive = newdir[0]; | |
1469 | newdir += 2; | |
1470 | } | |
1471 | ||
1472 | /* Keep only a prefix from newdir if nm starts with slash | |
82330e7f | 1473 | (//server/share for UNC, nothing otherwise). */ |
9a1dc3be | 1474 | if (IS_DIRECTORY_SEP (nm[0]) && collapse_newdir) |
199607e4 RS |
1475 | { |
1476 | #ifdef WINDOWSNT | |
1477 | if (IS_DIRECTORY_SEP (newdir[0]) && IS_DIRECTORY_SEP (newdir[1])) | |
1478 | { | |
1479 | newdir = strcpy (alloca (strlen (newdir) + 1), newdir); | |
1480 | p = newdir + 2; | |
1481 | while (*p && !IS_DIRECTORY_SEP (*p)) p++; | |
1482 | p++; | |
1483 | while (*p && !IS_DIRECTORY_SEP (*p)) p++; | |
1484 | *p = 0; | |
1485 | } | |
1486 | else | |
1487 | #endif | |
1488 | newdir = ""; | |
1489 | } | |
1490 | } | |
5e570b75 | 1491 | #endif /* DOS_NT */ |
199607e4 RS |
1492 | |
1493 | if (newdir) | |
bfb61299 | 1494 | { |
57676091 | 1495 | /* Get rid of any slash at the end of newdir, unless newdir is |
f0f95d31 | 1496 | just / or // (an incomplete UNC name). */ |
199607e4 | 1497 | length = strlen (newdir); |
f0f95d31 | 1498 | if (length > 1 && IS_DIRECTORY_SEP (newdir[length - 1]) |
57676091 RS |
1499 | #ifdef WINDOWSNT |
1500 | && !(length == 2 && IS_DIRECTORY_SEP (newdir[0])) | |
1501 | #endif | |
1502 | ) | |
bfb61299 JB |
1503 | { |
1504 | unsigned char *temp = (unsigned char *) alloca (length); | |
1505 | bcopy (newdir, temp, length - 1); | |
1506 | temp[length - 1] = 0; | |
1507 | newdir = temp; | |
1508 | } | |
1509 | tlen = length + 1; | |
1510 | } | |
1511 | else | |
1512 | tlen = 0; | |
570d7624 | 1513 | |
bfb61299 JB |
1514 | /* Now concatenate the directory and name to new space in the stack frame */ |
1515 | tlen += strlen (nm) + 1; | |
5e570b75 | 1516 | #ifdef DOS_NT |
f0f95d31 RS |
1517 | /* Reserve space for drive specifier and escape prefix, since either |
1518 | or both may need to be inserted. (The Microsoft x86 compiler | |
5e570b75 | 1519 | produces incorrect code if the following two lines are combined.) */ |
f0f95d31 RS |
1520 | target = (unsigned char *) alloca (tlen + 4); |
1521 | target += 4; | |
5e570b75 | 1522 | #else /* not DOS_NT */ |
570d7624 | 1523 | target = (unsigned char *) alloca (tlen); |
5e570b75 | 1524 | #endif /* not DOS_NT */ |
570d7624 JB |
1525 | *target = 0; |
1526 | ||
1527 | if (newdir) | |
1528 | { | |
1529 | #ifndef VMS | |
5e570b75 | 1530 | if (nm[0] == 0 || IS_DIRECTORY_SEP (nm[0])) |
f5321b5c | 1531 | { |
3ea2d8b2 | 1532 | #ifdef DOS_NT |
f5321b5c RS |
1533 | /* If newdir is effectively "C:/", then the drive letter will have |
1534 | been stripped and newdir will be "/". Concatenating with an | |
1535 | absolute directory in nm produces "//", which will then be | |
1536 | incorrectly treated as a network share. Ignore newdir in | |
1537 | this case (keeping the drive letter). */ | |
1538 | if (!(drive && nm[0] && IS_DIRECTORY_SEP (newdir[0]) | |
1539 | && newdir[1] == '\0')) | |
1540 | #endif | |
1541 | strcpy (target, newdir); | |
1542 | } | |
570d7624 JB |
1543 | else |
1544 | #endif | |
c77d647e | 1545 | file_name_as_directory (target, newdir); |
570d7624 JB |
1546 | } |
1547 | ||
1548 | strcat (target, nm); | |
1549 | #ifdef VMS | |
1550 | if (index (target, '/')) | |
1551 | strcpy (target, sys_translate_unix (target)); | |
1552 | #endif /* VMS */ | |
1553 | ||
199607e4 RS |
1554 | /* ASSERT (IS_DIRECTORY_SEP (target[0])) if not VMS */ |
1555 | ||
214378ec GM |
1556 | /* Now canonicalize by removing `//', `/.' and `/foo/..' if they |
1557 | appear. */ | |
570d7624 JB |
1558 | |
1559 | p = target; | |
1560 | o = target; | |
1561 | ||
1562 | while (*p) | |
1563 | { | |
1564 | #ifdef VMS | |
1565 | if (*p != ']' && *p != '>' && *p != '-') | |
1566 | { | |
1567 | if (*p == '\\') | |
1568 | p++; | |
1569 | *o++ = *p++; | |
1570 | } | |
1571 | else if ((p[0] == ']' || p[0] == '>') && p[0] == p[1] + 2) | |
1572 | /* brackets are offset from each other by 2 */ | |
1573 | { | |
1574 | p += 2; | |
1575 | if (*p != '.' && *p != '-' && o[-1] != '.') | |
1576 | /* convert [foo][bar] to [bar] */ | |
1577 | while (o[-1] != '[' && o[-1] != '<') | |
1578 | o--; | |
1579 | else if (*p == '-' && *o != '.') | |
1580 | *--p = '.'; | |
1581 | } | |
1582 | else if (p[0] == '-' && o[-1] == '.' && | |
1583 | (p[1] == '.' || p[1] == ']' || p[1] == '>')) | |
1584 | /* flush .foo.- ; leave - if stopped by '[' or '<' */ | |
1585 | { | |
1586 | do | |
1587 | o--; | |
1588 | while (o[-1] != '.' && o[-1] != '[' && o[-1] != '<'); | |
5e570b75 | 1589 | if (p[1] == '.') /* foo.-.bar ==> bar. */ |
570d7624 JB |
1590 | p += 2; |
1591 | else if (o[-1] == '.') /* '.foo.-]' ==> ']' */ | |
1592 | p++, o--; | |
1593 | /* else [foo.-] ==> [-] */ | |
1594 | } | |
1595 | else | |
1596 | { | |
1597 | #ifndef VMS4_4 | |
1598 | if (*p == '-' && | |
1599 | o[-1] != '[' && o[-1] != '<' && o[-1] != '.' && | |
1600 | p[1] != ']' && p[1] != '>' && p[1] != '.') | |
1601 | *p = '_'; | |
1602 | #endif /* VMS4_4 */ | |
1603 | *o++ = *p++; | |
1604 | } | |
1605 | #else /* not VMS */ | |
5e570b75 RS |
1606 | if (!IS_DIRECTORY_SEP (*p)) |
1607 | { | |
570d7624 JB |
1608 | *o++ = *p++; |
1609 | } | |
5e570b75 | 1610 | else if (IS_DIRECTORY_SEP (p[0]) |
c77d647e | 1611 | && p[1] == '.' |
5e570b75 | 1612 | && (IS_DIRECTORY_SEP (p[2]) |
c77d647e JB |
1613 | || p[2] == 0)) |
1614 | { | |
1615 | /* If "/." is the entire filename, keep the "/". Otherwise, | |
1616 | just delete the whole "/.". */ | |
1617 | if (o == target && p[2] == '\0') | |
1618 | *o++ = *p; | |
1619 | p += 2; | |
1620 | } | |
c0fa5a0b | 1621 | else if (IS_DIRECTORY_SEP (p[0]) && p[1] == '.' && p[2] == '.' |
570d7624 JB |
1622 | /* `/../' is the "superroot" on certain file systems. */ |
1623 | && o != target | |
5e570b75 | 1624 | && (IS_DIRECTORY_SEP (p[3]) || p[3] == 0)) |
570d7624 | 1625 | { |
5e570b75 | 1626 | while (o != target && (--o) && !IS_DIRECTORY_SEP (*o)) |
570d7624 | 1627 | ; |
795de720 RS |
1628 | /* Keep initial / only if this is the whole name. */ |
1629 | if (o == target && IS_ANY_SEP (*o) && p[3] == 0) | |
51b1d12e | 1630 | ++o; |
570d7624 JB |
1631 | p += 3; |
1632 | } | |
214378ec GM |
1633 | else if (p > target |
1634 | && IS_DIRECTORY_SEP (p[0]) && IS_DIRECTORY_SEP (p[1])) | |
1635 | { | |
1636 | /* Collapse multiple `/' in a row. */ | |
1637 | *o++ = *p++; | |
1638 | while (IS_DIRECTORY_SEP (*p)) | |
1639 | ++p; | |
1640 | } | |
570d7624 | 1641 | else |
5e570b75 | 1642 | { |
570d7624 JB |
1643 | *o++ = *p++; |
1644 | } | |
1645 | #endif /* not VMS */ | |
1646 | } | |
1647 | ||
5e570b75 | 1648 | #ifdef DOS_NT |
199607e4 | 1649 | /* At last, set drive name. */ |
5e570b75 | 1650 | #ifdef WINDOWSNT |
199607e4 RS |
1651 | /* Except for network file name. */ |
1652 | if (!(IS_DIRECTORY_SEP (target[0]) && IS_DIRECTORY_SEP (target[1]))) | |
5e570b75 | 1653 | #endif /* WINDOWSNT */ |
4c3c22f3 | 1654 | { |
199607e4 | 1655 | if (!drive) abort (); |
4c3c22f3 | 1656 | target -= 2; |
f94988a7 | 1657 | target[0] = DRIVE_LETTER (drive); |
4c3c22f3 RS |
1658 | target[1] = ':'; |
1659 | } | |
f0f95d31 RS |
1660 | /* Reinsert the escape prefix if required. */ |
1661 | if (is_escaped) | |
1662 | { | |
1663 | target -= 2; | |
1664 | target[0] = '/'; | |
1665 | target[1] = ':'; | |
1666 | } | |
199607e4 | 1667 | CORRECT_DIR_SEPS (target); |
5e570b75 | 1668 | #endif /* DOS_NT */ |
4c3c22f3 | 1669 | |
570d7624 JB |
1670 | return make_string (target, o - target); |
1671 | } | |
5e570b75 | 1672 | |
4887597a EZ |
1673 | #if 0 |
1674 | /* PLEASE DO NOT DELETE THIS COMMENTED-OUT VERSION! | |
1675 | This is the old version of expand-file-name, before it was thoroughly | |
1676 | rewritten for Emacs 10.31. We leave this version here commented-out, | |
1677 | because the code is very complex and likely to have subtle bugs. If | |
1678 | bugs _are_ found, it might be of interest to look at the old code and | |
1679 | see what did it do in the relevant situation. | |
1680 | ||
1681 | Don't remove this code: it's true that it will be accessible via CVS, | |
1682 | but a few years from deletion, people will forget it is there. */ | |
1683 | ||
1684 | /* Changed this DEFUN to a DEAFUN, so as not to confuse `make-docfile'. */ | |
1685 | DEAFUN ("expand-file-name", Fexpand_file_name, Sexpand_file_name, 1, 2, 0, | |
1686 | "Convert FILENAME to absolute, and canonicalize it.\n\ | |
1687 | Second arg DEFAULT is directory to start with if FILENAME is relative\n\ | |
1688 | (does not start with slash); if DEFAULT is nil or missing,\n\ | |
1689 | the current buffer's value of default-directory is used.\n\ | |
1690 | Filenames containing `.' or `..' as components are simplified;\n\ | |
1691 | initial `~/' expands to your home directory.\n\ | |
1692 | See also the function `substitute-in-file-name'.") | |
1693 | (name, defalt) | |
1694 | Lisp_Object name, defalt; | |
1695 | { | |
1696 | unsigned char *nm; | |
1697 | ||
1698 | register unsigned char *newdir, *p, *o; | |
1699 | int tlen; | |
1700 | unsigned char *target; | |
1701 | struct passwd *pw; | |
1702 | int lose; | |
1703 | #ifdef VMS | |
1704 | unsigned char * colon = 0; | |
1705 | unsigned char * close = 0; | |
1706 | unsigned char * slash = 0; | |
1707 | unsigned char * brack = 0; | |
1708 | int lbrack = 0, rbrack = 0; | |
1709 | int dots = 0; | |
1710 | #endif /* VMS */ | |
1711 | ||
b7826503 | 1712 | CHECK_STRING (name); |
4887597a EZ |
1713 | |
1714 | #ifdef VMS | |
1715 | /* Filenames on VMS are always upper case. */ | |
1716 | name = Fupcase (name); | |
1717 | #endif | |
1718 | ||
1719 | nm = XSTRING (name)->data; | |
1720 | ||
1721 | /* If nm is absolute, flush ...// and detect /./ and /../. | |
1722 | If no /./ or /../ we can return right away. */ | |
1723 | if ( | |
1724 | nm[0] == '/' | |
1725 | #ifdef VMS | |
1726 | || index (nm, ':') | |
1727 | #endif /* VMS */ | |
1728 | ) | |
1729 | { | |
1730 | p = nm; | |
1731 | lose = 0; | |
1732 | while (*p) | |
1733 | { | |
1734 | if (p[0] == '/' && p[1] == '/' | |
1735 | #ifdef APOLLO | |
1736 | /* // at start of filename is meaningful on Apollo system. */ | |
1737 | && nm != p | |
1738 | #endif /* APOLLO */ | |
1739 | ) | |
1740 | nm = p + 1; | |
1741 | if (p[0] == '/' && p[1] == '~') | |
1742 | nm = p + 1, lose = 1; | |
1743 | if (p[0] == '/' && p[1] == '.' | |
1744 | && (p[2] == '/' || p[2] == 0 | |
1745 | || (p[2] == '.' && (p[3] == '/' || p[3] == 0)))) | |
1746 | lose = 1; | |
1747 | #ifdef VMS | |
1748 | if (p[0] == '\\') | |
1749 | lose = 1; | |
1750 | if (p[0] == '/') { | |
1751 | /* if dev:[dir]/, move nm to / */ | |
1752 | if (!slash && p > nm && (brack || colon)) { | |
1753 | nm = (brack ? brack + 1 : colon + 1); | |
1754 | lbrack = rbrack = 0; | |
1755 | brack = 0; | |
1756 | colon = 0; | |
1757 | } | |
1758 | slash = p; | |
1759 | } | |
1760 | if (p[0] == '-') | |
1761 | #ifndef VMS4_4 | |
1762 | /* VMS pre V4.4,convert '-'s in filenames. */ | |
1763 | if (lbrack == rbrack) | |
1764 | { | |
1765 | if (dots < 2) /* this is to allow negative version numbers */ | |
1766 | p[0] = '_'; | |
1767 | } | |
1768 | else | |
1769 | #endif /* VMS4_4 */ | |
1770 | if (lbrack > rbrack && | |
1771 | ((p[-1] == '.' || p[-1] == '[' || p[-1] == '<') && | |
1772 | (p[1] == '.' || p[1] == ']' || p[1] == '>'))) | |
1773 | lose = 1; | |
1774 | #ifndef VMS4_4 | |
1775 | else | |
1776 | p[0] = '_'; | |
1777 | #endif /* VMS4_4 */ | |
1778 | /* count open brackets, reset close bracket pointer */ | |
1779 | if (p[0] == '[' || p[0] == '<') | |
1780 | lbrack++, brack = 0; | |
1781 | /* count close brackets, set close bracket pointer */ | |
1782 | if (p[0] == ']' || p[0] == '>') | |
1783 | rbrack++, brack = p; | |
1784 | /* detect ][ or >< */ | |
1785 | if ((p[0] == ']' || p[0] == '>') && (p[1] == '[' || p[1] == '<')) | |
1786 | lose = 1; | |
1787 | if ((p[0] == ':' || p[0] == ']' || p[0] == '>') && p[1] == '~') | |
1788 | nm = p + 1, lose = 1; | |
1789 | if (p[0] == ':' && (colon || slash)) | |
1790 | /* if dev1:[dir]dev2:, move nm to dev2: */ | |
1791 | if (brack) | |
1792 | { | |
1793 | nm = brack + 1; | |
1794 | brack = 0; | |
1795 | } | |
1796 | /* If /name/dev:, move nm to dev: */ | |
1797 | else if (slash) | |
1798 | nm = slash + 1; | |
1799 | /* If node::dev:, move colon following dev */ | |
1800 | else if (colon && colon[-1] == ':') | |
1801 | colon = p; | |
1802 | /* If dev1:dev2:, move nm to dev2: */ | |
1803 | else if (colon && colon[-1] != ':') | |
1804 | { | |
1805 | nm = colon + 1; | |
1806 | colon = 0; | |
1807 | } | |
1808 | if (p[0] == ':' && !colon) | |
1809 | { | |
1810 | if (p[1] == ':') | |
1811 | p++; | |
1812 | colon = p; | |
1813 | } | |
1814 | if (lbrack == rbrack) | |
1815 | if (p[0] == ';') | |
1816 | dots = 2; | |
1817 | else if (p[0] == '.') | |
1818 | dots++; | |
1819 | #endif /* VMS */ | |
1820 | p++; | |
1821 | } | |
1822 | if (!lose) | |
1823 | { | |
1824 | #ifdef VMS | |
1825 | if (index (nm, '/')) | |
1826 | return build_string (sys_translate_unix (nm)); | |
1827 | #endif /* VMS */ | |
1828 | if (nm == XSTRING (name)->data) | |
1829 | return name; | |
1830 | return build_string (nm); | |
1831 | } | |
1832 | } | |
1833 | ||
1834 | /* Now determine directory to start with and put it in NEWDIR */ | |
1835 | ||
1836 | newdir = 0; | |
1837 | ||
1838 | if (nm[0] == '~') /* prefix ~ */ | |
1839 | if (nm[1] == '/' | |
1840 | #ifdef VMS | |
1841 | || nm[1] == ':' | |
1842 | #endif /* VMS */ | |
1843 | || nm[1] == 0)/* ~/filename */ | |
1844 | { | |
1845 | if (!(newdir = (unsigned char *) egetenv ("HOME"))) | |
1846 | newdir = (unsigned char *) ""; | |
1847 | nm++; | |
1848 | #ifdef VMS | |
1849 | nm++; /* Don't leave the slash in nm. */ | |
1850 | #endif /* VMS */ | |
1851 | } | |
1852 | else /* ~user/filename */ | |
1853 | { | |
1854 | /* Get past ~ to user */ | |
1855 | unsigned char *user = nm + 1; | |
1856 | /* Find end of name. */ | |
1857 | unsigned char *ptr = (unsigned char *) index (user, '/'); | |
1858 | int len = ptr ? ptr - user : strlen (user); | |
1859 | #ifdef VMS | |
1860 | unsigned char *ptr1 = index (user, ':'); | |
1861 | if (ptr1 != 0 && ptr1 - user < len) | |
1862 | len = ptr1 - user; | |
1863 | #endif /* VMS */ | |
1864 | /* Copy the user name into temp storage. */ | |
1865 | o = (unsigned char *) alloca (len + 1); | |
1866 | bcopy ((char *) user, o, len); | |
1867 | o[len] = 0; | |
1868 | ||
1869 | /* Look up the user name. */ | |
1870 | pw = (struct passwd *) getpwnam (o + 1); | |
1871 | if (!pw) | |
1872 | error ("\"%s\" isn't a registered user", o + 1); | |
1873 | ||
1874 | newdir = (unsigned char *) pw->pw_dir; | |
1875 | ||
1876 | /* Discard the user name from NM. */ | |
1877 | nm += len; | |
1878 | } | |
1879 | ||
1880 | if (nm[0] != '/' | |
1881 | #ifdef VMS | |
1882 | && !index (nm, ':') | |
1883 | #endif /* not VMS */ | |
1884 | && !newdir) | |
1885 | { | |
1886 | if (NILP (defalt)) | |
1887 | defalt = current_buffer->directory; | |
b7826503 | 1888 | CHECK_STRING (defalt); |
4887597a EZ |
1889 | newdir = XSTRING (defalt)->data; |
1890 | } | |
1891 | ||
1892 | /* Now concatenate the directory and name to new space in the stack frame */ | |
1893 | ||
1894 | tlen = (newdir ? strlen (newdir) + 1 : 0) + strlen (nm) + 1; | |
1895 | target = (unsigned char *) alloca (tlen); | |
1896 | *target = 0; | |
1897 | ||
1898 | if (newdir) | |
1899 | { | |
1900 | #ifndef VMS | |
1901 | if (nm[0] == 0 || nm[0] == '/') | |
1902 | strcpy (target, newdir); | |
1903 | else | |
1904 | #endif | |
1905 | file_name_as_directory (target, newdir); | |
1906 | } | |
1907 | ||
1908 | strcat (target, nm); | |
1909 | #ifdef VMS | |
1910 | if (index (target, '/')) | |
1911 | strcpy (target, sys_translate_unix (target)); | |
1912 | #endif /* VMS */ | |
1913 | ||
1914 | /* Now canonicalize by removing /. and /foo/.. if they appear */ | |
1915 | ||
1916 | p = target; | |
1917 | o = target; | |
1918 | ||
1919 | while (*p) | |
1920 | { | |
1921 | #ifdef VMS | |
1922 | if (*p != ']' && *p != '>' && *p != '-') | |
1923 | { | |
1924 | if (*p == '\\') | |
1925 | p++; | |
1926 | *o++ = *p++; | |
1927 | } | |
1928 | else if ((p[0] == ']' || p[0] == '>') && p[0] == p[1] + 2) | |
1929 | /* brackets are offset from each other by 2 */ | |
1930 | { | |
1931 | p += 2; | |
1932 | if (*p != '.' && *p != '-' && o[-1] != '.') | |
1933 | /* convert [foo][bar] to [bar] */ | |
1934 | while (o[-1] != '[' && o[-1] != '<') | |
1935 | o--; | |
1936 | else if (*p == '-' && *o != '.') | |
1937 | *--p = '.'; | |
1938 | } | |
1939 | else if (p[0] == '-' && o[-1] == '.' && | |
1940 | (p[1] == '.' || p[1] == ']' || p[1] == '>')) | |
1941 | /* flush .foo.- ; leave - if stopped by '[' or '<' */ | |
1942 | { | |
1943 | do | |
1944 | o--; | |
1945 | while (o[-1] != '.' && o[-1] != '[' && o[-1] != '<'); | |
1946 | if (p[1] == '.') /* foo.-.bar ==> bar. */ | |
1947 | p += 2; | |
1948 | else if (o[-1] == '.') /* '.foo.-]' ==> ']' */ | |
1949 | p++, o--; | |
1950 | /* else [foo.-] ==> [-] */ | |
1951 | } | |
1952 | else | |
1953 | { | |
1954 | #ifndef VMS4_4 | |
1955 | if (*p == '-' && | |
1956 | o[-1] != '[' && o[-1] != '<' && o[-1] != '.' && | |
1957 | p[1] != ']' && p[1] != '>' && p[1] != '.') | |
1958 | *p = '_'; | |
1959 | #endif /* VMS4_4 */ | |
1960 | *o++ = *p++; | |
1961 | } | |
1962 | #else /* not VMS */ | |
1963 | if (*p != '/') | |
1964 | { | |
1965 | *o++ = *p++; | |
1966 | } | |
1967 | else if (!strncmp (p, "//", 2) | |
1968 | #ifdef APOLLO | |
1969 | /* // at start of filename is meaningful in Apollo system. */ | |
1970 | && o != target | |
1971 | #endif /* APOLLO */ | |
1972 | ) | |
1973 | { | |
1974 | o = target; | |
1975 | p++; | |
1976 | } | |
1977 | else if (p[0] == '/' && p[1] == '.' && | |
1978 | (p[2] == '/' || p[2] == 0)) | |
1979 | p += 2; | |
1980 | else if (!strncmp (p, "/..", 3) | |
1981 | /* `/../' is the "superroot" on certain file systems. */ | |
1982 | && o != target | |
1983 | && (p[3] == '/' || p[3] == 0)) | |
1984 | { | |
1985 | while (o != target && *--o != '/') | |
1986 | ; | |
1987 | #ifdef APOLLO | |
1988 | if (o == target + 1 && o[-1] == '/' && o[0] == '/') | |
1989 | ++o; | |
1990 | else | |
1991 | #endif /* APOLLO */ | |
1992 | if (o == target && *o == '/') | |
1993 | ++o; | |
1994 | p += 3; | |
1995 | } | |
1996 | else | |
1997 | { | |
1998 | *o++ = *p++; | |
1999 | } | |
2000 | #endif /* not VMS */ | |
2001 | } | |
2002 | ||
2003 | return make_string (target, o - target); | |
2004 | } | |
2005 | #endif | |
570d7624 JB |
2006 | \f |
2007 | DEFUN ("substitute-in-file-name", Fsubstitute_in_file_name, | |
8c1a1077 PJ |
2008 | Ssubstitute_in_file_name, 1, 1, 0, |
2009 | doc: /* Substitute environment variables referred to in FILENAME. | |
2010 | `$FOO' where FOO is an environment variable name means to substitute | |
2011 | the value of that variable. The variable name should be terminated | |
2012 | with a character not a letter, digit or underscore; otherwise, enclose | |
2013 | the entire variable name in braces. | |
2014 | If `/~' appears, all of FILENAME through that `/' is discarded. | |
2015 | ||
2016 | On VMS, `$' substitution is not done; this function does little and only | |
2017 | duplicates what `expand-file-name' does. */) | |
2018 | (filename) | |
3b7f6e60 | 2019 | Lisp_Object filename; |
570d7624 JB |
2020 | { |
2021 | unsigned char *nm; | |
2022 | ||
2023 | register unsigned char *s, *p, *o, *x, *endp; | |
6bbd7a29 | 2024 | unsigned char *target = NULL; |
570d7624 JB |
2025 | int total = 0; |
2026 | int substituted = 0; | |
2027 | unsigned char *xnm; | |
8ce069f5 | 2028 | Lisp_Object handler; |
570d7624 | 2029 | |
b7826503 | 2030 | CHECK_STRING (filename); |
570d7624 | 2031 | |
8ce069f5 RS |
2032 | /* If the file name has special constructs in it, |
2033 | call the corresponding file handler. */ | |
3b7f6e60 | 2034 | handler = Ffind_file_name_handler (filename, Qsubstitute_in_file_name); |
8ce069f5 | 2035 | if (!NILP (handler)) |
3b7f6e60 | 2036 | return call2 (handler, Qsubstitute_in_file_name, filename); |
8ce069f5 | 2037 | |
3b7f6e60 | 2038 | nm = XSTRING (filename)->data; |
199607e4 RS |
2039 | #ifdef DOS_NT |
2040 | nm = strcpy (alloca (strlen (nm) + 1), nm); | |
2041 | CORRECT_DIR_SEPS (nm); | |
2042 | substituted = (strcmp (nm, XSTRING (filename)->data) != 0); | |
a5a1cc06 | 2043 | #endif |
fc932ac6 | 2044 | endp = nm + STRING_BYTES (XSTRING (filename)); |
570d7624 | 2045 | |
82330e7f | 2046 | /* If /~ or // appears, discard everything through first slash. */ |
570d7624 JB |
2047 | |
2048 | for (p = nm; p != endp; p++) | |
2049 | { | |
199607e4 RS |
2050 | if ((p[0] == '~' |
2051 | #if defined (APOLLO) || defined (WINDOWSNT) | |
2052 | /* // at start of file name is meaningful in Apollo and | |
82330e7f | 2053 | WindowsNT systems. */ |
199607e4 RS |
2054 | || (IS_DIRECTORY_SEP (p[0]) && p - 1 != nm) |
2055 | #else /* not (APOLLO || WINDOWSNT) */ | |
2056 | || IS_DIRECTORY_SEP (p[0]) | |
2057 | #endif /* not (APOLLO || WINDOWSNT) */ | |
570d7624 | 2058 | ) |
5e570b75 RS |
2059 | && p != nm |
2060 | && (0 | |
570d7624 | 2061 | #ifdef VMS |
5e570b75 | 2062 | || p[-1] == ':' || p[-1] == ']' || p[-1] == '>' |
570d7624 | 2063 | #endif /* VMS */ |
5e570b75 | 2064 | || IS_DIRECTORY_SEP (p[-1]))) |
570d7624 JB |
2065 | { |
2066 | nm = p; | |
2067 | substituted = 1; | |
2068 | } | |
5e570b75 | 2069 | #ifdef DOS_NT |
199607e4 RS |
2070 | /* see comment in expand-file-name about drive specifiers */ |
2071 | else if (IS_DRIVE (p[0]) && p[1] == ':' | |
2072 | && p > nm && IS_DIRECTORY_SEP (p[-1])) | |
4c3c22f3 RS |
2073 | { |
2074 | nm = p; | |
2075 | substituted = 1; | |
2076 | } | |
5e570b75 | 2077 | #endif /* DOS_NT */ |
570d7624 JB |
2078 | } |
2079 | ||
2080 | #ifdef VMS | |
2081 | return build_string (nm); | |
2082 | #else | |
2083 | ||
2084 | /* See if any variables are substituted into the string | |
2085 | and find the total length of their values in `total' */ | |
2086 | ||
2087 | for (p = nm; p != endp;) | |
2088 | if (*p != '$') | |
2089 | p++; | |
2090 | else | |
2091 | { | |
2092 | p++; | |
2093 | if (p == endp) | |
2094 | goto badsubst; | |
2095 | else if (*p == '$') | |
2096 | { | |
2097 | /* "$$" means a single "$" */ | |
2098 | p++; | |
2099 | total -= 1; | |
2100 | substituted = 1; | |
2101 | continue; | |
2102 | } | |
2103 | else if (*p == '{') | |
2104 | { | |
2105 | o = ++p; | |
2106 | while (p != endp && *p != '}') p++; | |
2107 | if (*p != '}') goto missingclose; | |
2108 | s = p; | |
2109 | } | |
2110 | else | |
2111 | { | |
2112 | o = p; | |
2113 | while (p != endp && (isalnum (*p) || *p == '_')) p++; | |
2114 | s = p; | |
2115 | } | |
2116 | ||
2117 | /* Copy out the variable name */ | |
2118 | target = (unsigned char *) alloca (s - o + 1); | |
2119 | strncpy (target, o, s - o); | |
2120 | target[s - o] = 0; | |
5e570b75 | 2121 | #ifdef DOS_NT |
4c3c22f3 | 2122 | strupr (target); /* $home == $HOME etc. */ |
5e570b75 | 2123 | #endif /* DOS_NT */ |
570d7624 JB |
2124 | |
2125 | /* Get variable value */ | |
2126 | o = (unsigned char *) egetenv (target); | |
8d2ced53 SM |
2127 | if (o) |
2128 | { | |
2129 | total += strlen (o); | |
2130 | substituted = 1; | |
2131 | } | |
2132 | else if (*p == '}') | |
2133 | goto badvar; | |
570d7624 JB |
2134 | } |
2135 | ||
2136 | if (!substituted) | |
3b7f6e60 | 2137 | return filename; |
570d7624 JB |
2138 | |
2139 | /* If substitution required, recopy the string and do it */ | |
2140 | /* Make space in stack frame for the new copy */ | |
fc932ac6 | 2141 | xnm = (unsigned char *) alloca (STRING_BYTES (XSTRING (filename)) + total + 1); |
570d7624 JB |
2142 | x = xnm; |
2143 | ||
2144 | /* Copy the rest of the name through, replacing $ constructs with values */ | |
2145 | for (p = nm; *p;) | |
2146 | if (*p != '$') | |
2147 | *x++ = *p++; | |
2148 | else | |
2149 | { | |
2150 | p++; | |
2151 | if (p == endp) | |
2152 | goto badsubst; | |
2153 | else if (*p == '$') | |
2154 | { | |
2155 | *x++ = *p++; | |
2156 | continue; | |
2157 | } | |
2158 | else if (*p == '{') | |
2159 | { | |
2160 | o = ++p; | |
2161 | while (p != endp && *p != '}') p++; | |
2162 | if (*p != '}') goto missingclose; | |
2163 | s = p++; | |
2164 | } | |
2165 | else | |
2166 | { | |
2167 | o = p; | |
2168 | while (p != endp && (isalnum (*p) || *p == '_')) p++; | |
2169 | s = p; | |
2170 | } | |
2171 | ||
2172 | /* Copy out the variable name */ | |
2173 | target = (unsigned char *) alloca (s - o + 1); | |
2174 | strncpy (target, o, s - o); | |
2175 | target[s - o] = 0; | |
5e570b75 | 2176 | #ifdef DOS_NT |
4c3c22f3 | 2177 | strupr (target); /* $home == $HOME etc. */ |
5e570b75 | 2178 | #endif /* DOS_NT */ |
570d7624 JB |
2179 | |
2180 | /* Get variable value */ | |
2181 | o = (unsigned char *) egetenv (target); | |
570d7624 | 2182 | if (!o) |
8d2ced53 SM |
2183 | { |
2184 | *x++ = '$'; | |
2185 | strcpy (x, target); x+= strlen (target); | |
2186 | } | |
2187 | else if (STRING_MULTIBYTE (filename)) | |
60d67b83 RS |
2188 | { |
2189 | /* If the original string is multibyte, | |
2190 | convert what we substitute into multibyte. */ | |
60d67b83 RS |
2191 | while (*o) |
2192 | { | |
ce51c54c KH |
2193 | int c = unibyte_char_to_multibyte (*o++); |
2194 | x += CHAR_STRING (c, x); | |
60d67b83 RS |
2195 | } |
2196 | } | |
2197 | else | |
2198 | { | |
2199 | strcpy (x, o); | |
2200 | x += strlen (o); | |
2201 | } | |
570d7624 JB |
2202 | } |
2203 | ||
2204 | *x = 0; | |
2205 | ||
82330e7f | 2206 | /* If /~ or // appears, discard everything through first slash. */ |
570d7624 JB |
2207 | |
2208 | for (p = xnm; p != x; p++) | |
5e570b75 | 2209 | if ((p[0] == '~' |
199607e4 | 2210 | #if defined (APOLLO) || defined (WINDOWSNT) |
5e570b75 | 2211 | || (IS_DIRECTORY_SEP (p[0]) && p - 1 != xnm) |
199607e4 RS |
2212 | #else /* not (APOLLO || WINDOWSNT) */ |
2213 | || IS_DIRECTORY_SEP (p[0]) | |
2214 | #endif /* not (APOLLO || WINDOWSNT) */ | |
570d7624 | 2215 | ) |
ac5b7072 | 2216 | && p != xnm && IS_DIRECTORY_SEP (p[-1])) |
570d7624 | 2217 | xnm = p; |
5e570b75 | 2218 | #ifdef DOS_NT |
199607e4 | 2219 | else if (IS_DRIVE (p[0]) && p[1] == ':' |
4488d7e1 | 2220 | && p > xnm && IS_DIRECTORY_SEP (p[-1])) |
199607e4 | 2221 | xnm = p; |
4c3c22f3 | 2222 | #endif |
570d7624 | 2223 | |
60d67b83 RS |
2224 | if (STRING_MULTIBYTE (filename)) |
2225 | return make_string (xnm, x - xnm); | |
2226 | return make_unibyte_string (xnm, x - xnm); | |
570d7624 JB |
2227 | |
2228 | badsubst: | |
2229 | error ("Bad format environment-variable substitution"); | |
2230 | missingclose: | |
2231 | error ("Missing \"}\" in environment-variable substitution"); | |
2232 | badvar: | |
2233 | error ("Substituting nonexistent environment variable \"%s\"", target); | |
2234 | ||
2235 | /* NOTREACHED */ | |
2236 | #endif /* not VMS */ | |
6bbd7a29 | 2237 | return Qnil; |
570d7624 JB |
2238 | } |
2239 | \f | |
067ffa38 | 2240 | /* A slightly faster and more convenient way to get |
298b760e | 2241 | (directory-file-name (expand-file-name FOO)). */ |
067ffa38 | 2242 | |
570d7624 JB |
2243 | Lisp_Object |
2244 | expand_and_dir_to_file (filename, defdir) | |
2245 | Lisp_Object filename, defdir; | |
2246 | { | |
199607e4 | 2247 | register Lisp_Object absname; |
570d7624 | 2248 | |
199607e4 | 2249 | absname = Fexpand_file_name (filename, defdir); |
570d7624 JB |
2250 | #ifdef VMS |
2251 | { | |
fc932ac6 | 2252 | register int c = XSTRING (absname)->data[STRING_BYTES (XSTRING (absname)) - 1]; |
570d7624 | 2253 | if (c == ':' || c == ']' || c == '>') |
199607e4 | 2254 | absname = Fdirectory_file_name (absname); |
570d7624 JB |
2255 | } |
2256 | #else | |
199607e4 | 2257 | /* Remove final slash, if any (unless this is the root dir). |
570d7624 | 2258 | stat behaves differently depending! */ |
199607e4 | 2259 | if (XSTRING (absname)->size > 1 |
fc932ac6 RS |
2260 | && IS_DIRECTORY_SEP (XSTRING (absname)->data[STRING_BYTES (XSTRING (absname)) - 1]) |
2261 | && !IS_DEVICE_SEP (XSTRING (absname)->data[STRING_BYTES (XSTRING (absname))-2])) | |
ddc61f46 | 2262 | /* We cannot take shortcuts; they might be wrong for magic file names. */ |
199607e4 | 2263 | absname = Fdirectory_file_name (absname); |
570d7624 | 2264 | #endif |
199607e4 | 2265 | return absname; |
570d7624 JB |
2266 | } |
2267 | \f | |
3ed15d97 RS |
2268 | /* Signal an error if the file ABSNAME already exists. |
2269 | If INTERACTIVE is nonzero, ask the user whether to proceed, | |
2270 | and bypass the error if the user says to go ahead. | |
2271 | QUERYSTRING is a name for the action that is being considered | |
2272 | to alter the file. | |
de1d0127 | 2273 | |
3ed15d97 | 2274 | *STATPTR is used to store the stat information if the file exists. |
de1d0127 | 2275 | If the file does not exist, STATPTR->st_mode is set to 0. |
b8b29dc9 RS |
2276 | If STATPTR is null, we don't store into it. |
2277 | ||
2278 | If QUICK is nonzero, we ask for y or n, not yes or no. */ | |
3ed15d97 | 2279 | |
c4df73f9 | 2280 | void |
b8b29dc9 | 2281 | barf_or_query_if_file_exists (absname, querystring, interactive, statptr, quick) |
570d7624 JB |
2282 | Lisp_Object absname; |
2283 | unsigned char *querystring; | |
2284 | int interactive; | |
3ed15d97 | 2285 | struct stat *statptr; |
b8b29dc9 | 2286 | int quick; |
570d7624 | 2287 | { |
643c73b9 | 2288 | register Lisp_Object tem, encoded_filename; |
4018b5ef | 2289 | struct stat statbuf; |
570d7624 JB |
2290 | struct gcpro gcpro1; |
2291 | ||
643c73b9 RS |
2292 | encoded_filename = ENCODE_FILE (absname); |
2293 | ||
4018b5ef RS |
2294 | /* stat is a good way to tell whether the file exists, |
2295 | regardless of what access permissions it has. */ | |
643c73b9 | 2296 | if (stat (XSTRING (encoded_filename)->data, &statbuf) >= 0) |
570d7624 JB |
2297 | { |
2298 | if (! interactive) | |
2299 | Fsignal (Qfile_already_exists, | |
2300 | Fcons (build_string ("File already exists"), | |
2301 | Fcons (absname, Qnil))); | |
2302 | GCPRO1 (absname); | |
b8b29dc9 RS |
2303 | tem = format1 ("File %s already exists; %s anyway? ", |
2304 | XSTRING (absname)->data, querystring); | |
2305 | if (quick) | |
2306 | tem = Fy_or_n_p (tem); | |
2307 | else | |
2308 | tem = do_yes_or_no_p (tem); | |
570d7624 | 2309 | UNGCPRO; |
265a9e55 | 2310 | if (NILP (tem)) |
570d7624 JB |
2311 | Fsignal (Qfile_already_exists, |
2312 | Fcons (build_string ("File already exists"), | |
2313 | Fcons (absname, Qnil))); | |
3ed15d97 RS |
2314 | if (statptr) |
2315 | *statptr = statbuf; | |
2316 | } | |
2317 | else | |
2318 | { | |
2319 | if (statptr) | |
2320 | statptr->st_mode = 0; | |
570d7624 JB |
2321 | } |
2322 | return; | |
2323 | } | |
2324 | ||
2325 | DEFUN ("copy-file", Fcopy_file, Scopy_file, 2, 4, | |
8c1a1077 PJ |
2326 | "fCopy file: \nFCopy %s to file: \np\nP", |
2327 | doc: /* Copy FILE to NEWNAME. Both args must be strings. | |
2328 | If NEWNAME names a directory, copy FILE there. | |
2329 | Signals a `file-already-exists' error if file NEWNAME already exists, | |
2330 | unless a third argument OK-IF-ALREADY-EXISTS is supplied and non-nil. | |
2331 | A number as third arg means request confirmation if NEWNAME already exists. | |
2332 | This is what happens in interactive use with M-x. | |
2333 | Fourth arg KEEP-TIME non-nil means give the new file the same | |
2334 | last-modified time as the old one. (This works on only some systems.) | |
2335 | A prefix arg makes KEEP-TIME non-nil. */) | |
2336 | (file, newname, ok_if_already_exists, keep_time) | |
8ca6602c | 2337 | Lisp_Object file, newname, ok_if_already_exists, keep_time; |
570d7624 JB |
2338 | { |
2339 | int ifd, ofd, n; | |
2340 | char buf[16 * 1024]; | |
3ed15d97 | 2341 | struct stat st, out_st; |
32f4334d | 2342 | Lisp_Object handler; |
b1d1b865 | 2343 | struct gcpro gcpro1, gcpro2, gcpro3, gcpro4; |
b5148e85 | 2344 | int count = specpdl_ptr - specpdl; |
f73b0ada | 2345 | int input_file_statable_p; |
b1d1b865 | 2346 | Lisp_Object encoded_file, encoded_newname; |
570d7624 | 2347 | |
b1d1b865 RS |
2348 | encoded_file = encoded_newname = Qnil; |
2349 | GCPRO4 (file, newname, encoded_file, encoded_newname); | |
b7826503 PJ |
2350 | CHECK_STRING (file); |
2351 | CHECK_STRING (newname); | |
b1d1b865 | 2352 | |
a9d14e54 GM |
2353 | if (!NILP (Ffile_directory_p (newname))) |
2354 | newname = Fexpand_file_name (file, newname); | |
2355 | else | |
2356 | newname = Fexpand_file_name (newname, Qnil); | |
2357 | ||
3b7f6e60 | 2358 | file = Fexpand_file_name (file, Qnil); |
32f4334d | 2359 | |
0bf2eed2 | 2360 | /* If the input file name has special constructs in it, |
32f4334d | 2361 | call the corresponding file handler. */ |
3b7f6e60 | 2362 | handler = Ffind_file_name_handler (file, Qcopy_file); |
0bf2eed2 | 2363 | /* Likewise for output file name. */ |
51cf6d37 | 2364 | if (NILP (handler)) |
49307295 | 2365 | handler = Ffind_file_name_handler (newname, Qcopy_file); |
32f4334d | 2366 | if (!NILP (handler)) |
3b7f6e60 | 2367 | RETURN_UNGCPRO (call5 (handler, Qcopy_file, file, newname, |
8ca6602c | 2368 | ok_if_already_exists, keep_time)); |
32f4334d | 2369 | |
b1d1b865 RS |
2370 | encoded_file = ENCODE_FILE (file); |
2371 | encoded_newname = ENCODE_FILE (newname); | |
2372 | ||
265a9e55 | 2373 | if (NILP (ok_if_already_exists) |
93c30b5f | 2374 | || INTEGERP (ok_if_already_exists)) |
b1d1b865 | 2375 | barf_or_query_if_file_exists (encoded_newname, "copy to it", |
b8b29dc9 | 2376 | INTEGERP (ok_if_already_exists), &out_st, 0); |
b1d1b865 | 2377 | else if (stat (XSTRING (encoded_newname)->data, &out_st) < 0) |
3ed15d97 | 2378 | out_st.st_mode = 0; |
570d7624 | 2379 | |
e8691c59 GM |
2380 | #ifdef WINDOWSNT |
2381 | if (!CopyFile (XSTRING (encoded_file)->data, | |
2382 | XSTRING (encoded_newname)->data, | |
2383 | FALSE)) | |
2384 | report_file_error ("Copying file", Fcons (file, Fcons (newname, Qnil))); | |
2385 | else if (NILP (keep_time)) | |
2386 | { | |
2387 | EMACS_TIME now; | |
2388 | EMACS_GET_TIME (now); | |
2389 | if (set_file_times (XSTRING (encoded_newname)->data, | |
2390 | now, now)) | |
2391 | Fsignal (Qfile_date_error, | |
2392 | Fcons (build_string ("Cannot set file date"), | |
2393 | Fcons (newname, Qnil))); | |
2394 | } | |
2395 | #else /* not WINDOWSNT */ | |
68c45bf0 | 2396 | ifd = emacs_open (XSTRING (encoded_file)->data, O_RDONLY, 0); |
570d7624 | 2397 | if (ifd < 0) |
3b7f6e60 | 2398 | report_file_error ("Opening input file", Fcons (file, Qnil)); |
570d7624 | 2399 | |
b5148e85 RS |
2400 | record_unwind_protect (close_file_unwind, make_number (ifd)); |
2401 | ||
f73b0ada BF |
2402 | /* We can only copy regular files and symbolic links. Other files are not |
2403 | copyable by us. */ | |
2404 | input_file_statable_p = (fstat (ifd, &st) >= 0); | |
2405 | ||
f9ba66ce | 2406 | #if !defined (DOS_NT) || __DJGPP__ > 1 |
3ed15d97 RS |
2407 | if (out_st.st_mode != 0 |
2408 | && st.st_dev == out_st.st_dev && st.st_ino == out_st.st_ino) | |
2409 | { | |
2410 | errno = 0; | |
2411 | report_file_error ("Input and output files are the same", | |
3b7f6e60 | 2412 | Fcons (file, Fcons (newname, Qnil))); |
3ed15d97 RS |
2413 | } |
2414 | #endif | |
2415 | ||
f73b0ada BF |
2416 | #if defined (S_ISREG) && defined (S_ISLNK) |
2417 | if (input_file_statable_p) | |
2418 | { | |
2419 | if (!(S_ISREG (st.st_mode)) && !(S_ISLNK (st.st_mode))) | |
2420 | { | |
2421 | #if defined (EISDIR) | |
2422 | /* Get a better looking error message. */ | |
2423 | errno = EISDIR; | |
2424 | #endif /* EISDIR */ | |
3b7f6e60 | 2425 | report_file_error ("Non-regular file", Fcons (file, Qnil)); |
f73b0ada BF |
2426 | } |
2427 | } | |
2428 | #endif /* S_ISREG && S_ISLNK */ | |
2429 | ||
570d7624 JB |
2430 | #ifdef VMS |
2431 | /* Create the copy file with the same record format as the input file */ | |
b1d1b865 | 2432 | ofd = sys_creat (XSTRING (encoded_newname)->data, 0666, ifd); |
570d7624 | 2433 | #else |
4c3c22f3 RS |
2434 | #ifdef MSDOS |
2435 | /* System's default file type was set to binary by _fmode in emacs.c. */ | |
b1d1b865 | 2436 | ofd = creat (XSTRING (encoded_newname)->data, S_IREAD | S_IWRITE); |
4c3c22f3 | 2437 | #else /* not MSDOS */ |
b1d1b865 | 2438 | ofd = creat (XSTRING (encoded_newname)->data, 0666); |
4c3c22f3 | 2439 | #endif /* not MSDOS */ |
570d7624 JB |
2440 | #endif /* VMS */ |
2441 | if (ofd < 0) | |
3ed15d97 | 2442 | report_file_error ("Opening output file", Fcons (newname, Qnil)); |
b5148e85 RS |
2443 | |
2444 | record_unwind_protect (close_file_unwind, make_number (ofd)); | |
570d7624 | 2445 | |
b5148e85 RS |
2446 | immediate_quit = 1; |
2447 | QUIT; | |
68c45bf0 PE |
2448 | while ((n = emacs_read (ifd, buf, sizeof buf)) > 0) |
2449 | if (emacs_write (ofd, buf, n) != n) | |
3ed15d97 | 2450 | report_file_error ("I/O error", Fcons (newname, Qnil)); |
b5148e85 | 2451 | immediate_quit = 0; |
570d7624 | 2452 | |
5acac34e | 2453 | /* Closing the output clobbers the file times on some systems. */ |
68c45bf0 | 2454 | if (emacs_close (ofd) < 0) |
5acac34e RS |
2455 | report_file_error ("I/O error", Fcons (newname, Qnil)); |
2456 | ||
f73b0ada | 2457 | if (input_file_statable_p) |
570d7624 | 2458 | { |
8ca6602c | 2459 | if (!NILP (keep_time)) |
570d7624 | 2460 | { |
de5bf5d3 JB |
2461 | EMACS_TIME atime, mtime; |
2462 | EMACS_SET_SECS_USECS (atime, st.st_atime, 0); | |
2463 | EMACS_SET_SECS_USECS (mtime, st.st_mtime, 0); | |
b1d1b865 RS |
2464 | if (set_file_times (XSTRING (encoded_newname)->data, |
2465 | atime, mtime)) | |
c0b7b21c | 2466 | Fsignal (Qfile_date_error, |
d1b9ed63 | 2467 | Fcons (build_string ("Cannot set file date"), |
3dbcf3f6 | 2468 | Fcons (newname, Qnil))); |
570d7624 | 2469 | } |
2dc3be7e | 2470 | #ifndef MSDOS |
b1d1b865 | 2471 | chmod (XSTRING (encoded_newname)->data, st.st_mode & 07777); |
2dc3be7e RS |
2472 | #else /* MSDOS */ |
2473 | #if defined (__DJGPP__) && __DJGPP__ > 1 | |
2474 | /* In DJGPP v2.0 and later, fstat usually returns true file mode bits, | |
2475 | and if it can't, it tells so. Otherwise, under MSDOS we usually | |
2476 | get only the READ bit, which will make the copied file read-only, | |
2477 | so it's better not to chmod at all. */ | |
2478 | if ((_djstat_flags & _STFAIL_WRITEBIT) == 0) | |
b1d1b865 | 2479 | chmod (XSTRING (encoded_newname)->data, st.st_mode & 07777); |
2dc3be7e RS |
2480 | #endif /* DJGPP version 2 or newer */ |
2481 | #endif /* MSDOS */ | |
570d7624 JB |
2482 | } |
2483 | ||
68c45bf0 | 2484 | emacs_close (ifd); |
e8691c59 | 2485 | #endif /* WINDOWSNT */ |
5acac34e | 2486 | |
b5148e85 RS |
2487 | /* Discard the unwind protects. */ |
2488 | specpdl_ptr = specpdl + count; | |
2489 | ||
570d7624 JB |
2490 | UNGCPRO; |
2491 | return Qnil; | |
2492 | } | |
385b6cc7 | 2493 | \f |
9bbe01fb | 2494 | DEFUN ("make-directory-internal", Fmake_directory_internal, |
353cfc19 | 2495 | Smake_directory_internal, 1, 1, 0, |
8c1a1077 PJ |
2496 | doc: /* Create a new directory named DIRECTORY. */) |
2497 | (directory) | |
3b7f6e60 | 2498 | Lisp_Object directory; |
570d7624 JB |
2499 | { |
2500 | unsigned char *dir; | |
32f4334d | 2501 | Lisp_Object handler; |
b1d1b865 | 2502 | Lisp_Object encoded_dir; |
570d7624 | 2503 | |
b7826503 | 2504 | CHECK_STRING (directory); |
3b7f6e60 | 2505 | directory = Fexpand_file_name (directory, Qnil); |
32f4334d | 2506 | |
3b7f6e60 | 2507 | handler = Ffind_file_name_handler (directory, Qmake_directory_internal); |
32f4334d | 2508 | if (!NILP (handler)) |
3b7f6e60 | 2509 | return call2 (handler, Qmake_directory_internal, directory); |
9bbe01fb | 2510 | |
b1d1b865 RS |
2511 | encoded_dir = ENCODE_FILE (directory); |
2512 | ||
2513 | dir = XSTRING (encoded_dir)->data; | |
570d7624 | 2514 | |
5e570b75 RS |
2515 | #ifdef WINDOWSNT |
2516 | if (mkdir (dir) != 0) | |
2517 | #else | |
570d7624 | 2518 | if (mkdir (dir, 0777) != 0) |
5e570b75 | 2519 | #endif |
3b7f6e60 | 2520 | report_file_error ("Creating directory", Flist (1, &directory)); |
570d7624 | 2521 | |
32f4334d | 2522 | return Qnil; |
570d7624 JB |
2523 | } |
2524 | ||
aa734e17 | 2525 | DEFUN ("delete-directory", Fdelete_directory, Sdelete_directory, 1, 1, "FDelete directory: ", |
8c1a1077 PJ |
2526 | doc: /* Delete the directory named DIRECTORY. */) |
2527 | (directory) | |
3b7f6e60 | 2528 | Lisp_Object directory; |
570d7624 JB |
2529 | { |
2530 | unsigned char *dir; | |
32f4334d | 2531 | Lisp_Object handler; |
b1d1b865 | 2532 | Lisp_Object encoded_dir; |
570d7624 | 2533 | |
b7826503 | 2534 | CHECK_STRING (directory); |
3b7f6e60 | 2535 | directory = Fdirectory_file_name (Fexpand_file_name (directory, Qnil)); |
570d7624 | 2536 | |
3b7f6e60 | 2537 | handler = Ffind_file_name_handler (directory, Qdelete_directory); |
32f4334d | 2538 | if (!NILP (handler)) |
3b7f6e60 | 2539 | return call2 (handler, Qdelete_directory, directory); |
32f4334d | 2540 | |
b1d1b865 RS |
2541 | encoded_dir = ENCODE_FILE (directory); |
2542 | ||
2543 | dir = XSTRING (encoded_dir)->data; | |
2544 | ||
570d7624 | 2545 | if (rmdir (dir) != 0) |
3b7f6e60 | 2546 | report_file_error ("Removing directory", Flist (1, &directory)); |
570d7624 JB |
2547 | |
2548 | return Qnil; | |
2549 | } | |
2550 | ||
2551 | DEFUN ("delete-file", Fdelete_file, Sdelete_file, 1, 1, "fDelete file: ", | |
8c1a1077 PJ |
2552 | doc: /* Delete file named FILENAME. |
2553 | If file has multiple names, it continues to exist with the other names. */) | |
2554 | (filename) | |
570d7624 JB |
2555 | Lisp_Object filename; |
2556 | { | |
32f4334d | 2557 | Lisp_Object handler; |
b1d1b865 RS |
2558 | Lisp_Object encoded_file; |
2559 | ||
b7826503 | 2560 | CHECK_STRING (filename); |
570d7624 | 2561 | filename = Fexpand_file_name (filename, Qnil); |
32f4334d | 2562 | |
49307295 | 2563 | handler = Ffind_file_name_handler (filename, Qdelete_file); |
32f4334d | 2564 | if (!NILP (handler)) |
8a9b0da9 | 2565 | return call2 (handler, Qdelete_file, filename); |
32f4334d | 2566 | |
b1d1b865 RS |
2567 | encoded_file = ENCODE_FILE (filename); |
2568 | ||
2569 | if (0 > unlink (XSTRING (encoded_file)->data)) | |
570d7624 | 2570 | report_file_error ("Removing old name", Flist (1, &filename)); |
8a9b0da9 | 2571 | return Qnil; |
570d7624 JB |
2572 | } |
2573 | ||
385b6cc7 RS |
2574 | static Lisp_Object |
2575 | internal_delete_file_1 (ignore) | |
2576 | Lisp_Object ignore; | |
2577 | { | |
2578 | return Qt; | |
2579 | } | |
2580 | ||
2581 | /* Delete file FILENAME, returning 1 if successful and 0 if failed. */ | |
2582 | ||
2583 | int | |
2584 | internal_delete_file (filename) | |
2585 | Lisp_Object filename; | |
2586 | { | |
2587 | return NILP (internal_condition_case_1 (Fdelete_file, filename, | |
2588 | Qt, internal_delete_file_1)); | |
2589 | } | |
2590 | \f | |
570d7624 | 2591 | DEFUN ("rename-file", Frename_file, Srename_file, 2, 3, |
8c1a1077 PJ |
2592 | "fRename file: \nFRename %s to file: \np", |
2593 | doc: /* Rename FILE as NEWNAME. Both args strings. | |
2594 | If file has names other than FILE, it continues to have those names. | |
2595 | Signals a `file-already-exists' error if a file NEWNAME already exists | |
2596 | unless optional third argument OK-IF-ALREADY-EXISTS is non-nil. | |
2597 | A number as third arg means request confirmation if NEWNAME already exists. | |
2598 | This is what happens in interactive use with M-x. */) | |
2599 | (file, newname, ok_if_already_exists) | |
3b7f6e60 | 2600 | Lisp_Object file, newname, ok_if_already_exists; |
570d7624 JB |
2601 | { |
2602 | #ifdef NO_ARG_ARRAY | |
2603 | Lisp_Object args[2]; | |
2604 | #endif | |
32f4334d | 2605 | Lisp_Object handler; |
b1d1b865 RS |
2606 | struct gcpro gcpro1, gcpro2, gcpro3, gcpro4; |
2607 | Lisp_Object encoded_file, encoded_newname; | |
570d7624 | 2608 | |
b1d1b865 RS |
2609 | encoded_file = encoded_newname = Qnil; |
2610 | GCPRO4 (file, newname, encoded_file, encoded_newname); | |
b7826503 PJ |
2611 | CHECK_STRING (file); |
2612 | CHECK_STRING (newname); | |
3b7f6e60 | 2613 | file = Fexpand_file_name (file, Qnil); |
570d7624 | 2614 | newname = Fexpand_file_name (newname, Qnil); |
32f4334d RS |
2615 | |
2616 | /* If the file name has special constructs in it, | |
2617 | call the corresponding file handler. */ | |
3b7f6e60 | 2618 | handler = Ffind_file_name_handler (file, Qrename_file); |
51cf6d37 | 2619 | if (NILP (handler)) |
49307295 | 2620 | handler = Ffind_file_name_handler (newname, Qrename_file); |
32f4334d | 2621 | if (!NILP (handler)) |
36712b0a | 2622 | RETURN_UNGCPRO (call4 (handler, Qrename_file, |
3b7f6e60 | 2623 | file, newname, ok_if_already_exists)); |
32f4334d | 2624 | |
b1d1b865 RS |
2625 | encoded_file = ENCODE_FILE (file); |
2626 | encoded_newname = ENCODE_FILE (newname); | |
2627 | ||
bc77278f EZ |
2628 | #ifdef DOS_NT |
2629 | /* If the file names are identical but for the case, don't ask for | |
2630 | confirmation: they simply want to change the letter-case of the | |
2631 | file name. */ | |
2632 | if (NILP (Fstring_equal (Fdowncase (file), Fdowncase (newname)))) | |
2633 | #endif | |
265a9e55 | 2634 | if (NILP (ok_if_already_exists) |
93c30b5f | 2635 | || INTEGERP (ok_if_already_exists)) |
b1d1b865 | 2636 | barf_or_query_if_file_exists (encoded_newname, "rename to it", |
b8b29dc9 | 2637 | INTEGERP (ok_if_already_exists), 0, 0); |
570d7624 | 2638 | #ifndef BSD4_1 |
b1d1b865 | 2639 | if (0 > rename (XSTRING (encoded_file)->data, XSTRING (encoded_newname)->data)) |
570d7624 | 2640 | #else |
b1d1b865 RS |
2641 | if (0 > link (XSTRING (encoded_file)->data, XSTRING (encoded_newname)->data) |
2642 | || 0 > unlink (XSTRING (encoded_file)->data)) | |
570d7624 JB |
2643 | #endif |
2644 | { | |
2645 | if (errno == EXDEV) | |
2646 | { | |
3b7f6e60 | 2647 | Fcopy_file (file, newname, |
d093c3ac RM |
2648 | /* We have already prompted if it was an integer, |
2649 | so don't have copy-file prompt again. */ | |
2650 | NILP (ok_if_already_exists) ? Qnil : Qt, Qt); | |
3b7f6e60 | 2651 | Fdelete_file (file); |
570d7624 JB |
2652 | } |
2653 | else | |
2654 | #ifdef NO_ARG_ARRAY | |
2655 | { | |
3b7f6e60 | 2656 | args[0] = file; |
570d7624 JB |
2657 | args[1] = newname; |
2658 | report_file_error ("Renaming", Flist (2, args)); | |
2659 | } | |
2660 | #else | |
3b7f6e60 | 2661 | report_file_error ("Renaming", Flist (2, &file)); |
570d7624 JB |
2662 | #endif |
2663 | } | |
2664 | UNGCPRO; | |
2665 | return Qnil; | |
2666 | } | |
2667 | ||
2668 | DEFUN ("add-name-to-file", Fadd_name_to_file, Sadd_name_to_file, 2, 3, | |
8c1a1077 PJ |
2669 | "fAdd name to file: \nFName to add to %s: \np", |
2670 | doc: /* Give FILE additional name NEWNAME. Both args strings. | |
2671 | Signals a `file-already-exists' error if a file NEWNAME already exists | |
2672 | unless optional third argument OK-IF-ALREADY-EXISTS is non-nil. | |
2673 | A number as third arg means request confirmation if NEWNAME already exists. | |
2674 | This is what happens in interactive use with M-x. */) | |
2675 | (file, newname, ok_if_already_exists) | |
3b7f6e60 | 2676 | Lisp_Object file, newname, ok_if_already_exists; |
570d7624 JB |
2677 | { |
2678 | #ifdef NO_ARG_ARRAY | |
2679 | Lisp_Object args[2]; | |
2680 | #endif | |
32f4334d | 2681 | Lisp_Object handler; |
b1d1b865 RS |
2682 | Lisp_Object encoded_file, encoded_newname; |
2683 | struct gcpro gcpro1, gcpro2, gcpro3, gcpro4; | |
570d7624 | 2684 | |
b1d1b865 RS |
2685 | GCPRO4 (file, newname, encoded_file, encoded_newname); |
2686 | encoded_file = encoded_newname = Qnil; | |
b7826503 PJ |
2687 | CHECK_STRING (file); |
2688 | CHECK_STRING (newname); | |
3b7f6e60 | 2689 | file = Fexpand_file_name (file, Qnil); |
570d7624 | 2690 | newname = Fexpand_file_name (newname, Qnil); |
32f4334d RS |
2691 | |
2692 | /* If the file name has special constructs in it, | |
2693 | call the corresponding file handler. */ | |
3b7f6e60 | 2694 | handler = Ffind_file_name_handler (file, Qadd_name_to_file); |
32f4334d | 2695 | if (!NILP (handler)) |
3b7f6e60 | 2696 | RETURN_UNGCPRO (call4 (handler, Qadd_name_to_file, file, |
36712b0a | 2697 | newname, ok_if_already_exists)); |
32f4334d | 2698 | |
adc6741c RS |
2699 | /* If the new name has special constructs in it, |
2700 | call the corresponding file handler. */ | |
2701 | handler = Ffind_file_name_handler (newname, Qadd_name_to_file); | |
2702 | if (!NILP (handler)) | |
3b7f6e60 | 2703 | RETURN_UNGCPRO (call4 (handler, Qadd_name_to_file, file, |
adc6741c RS |
2704 | newname, ok_if_already_exists)); |
2705 | ||
b1d1b865 RS |
2706 | encoded_file = ENCODE_FILE (file); |
2707 | encoded_newname = ENCODE_FILE (newname); | |
2708 | ||
265a9e55 | 2709 | if (NILP (ok_if_already_exists) |
93c30b5f | 2710 | || INTEGERP (ok_if_already_exists)) |
b1d1b865 | 2711 | barf_or_query_if_file_exists (encoded_newname, "make it a new name", |
b8b29dc9 | 2712 | INTEGERP (ok_if_already_exists), 0, 0); |
5e570b75 | 2713 | |
570d7624 | 2714 | unlink (XSTRING (newname)->data); |
b1d1b865 | 2715 | if (0 > link (XSTRING (encoded_file)->data, XSTRING (encoded_newname)->data)) |
570d7624 JB |
2716 | { |
2717 | #ifdef NO_ARG_ARRAY | |
3b7f6e60 | 2718 | args[0] = file; |
570d7624 JB |
2719 | args[1] = newname; |
2720 | report_file_error ("Adding new name", Flist (2, args)); | |
2721 | #else | |
3b7f6e60 | 2722 | report_file_error ("Adding new name", Flist (2, &file)); |
570d7624 JB |
2723 | #endif |
2724 | } | |
2725 | ||
2726 | UNGCPRO; | |
2727 | return Qnil; | |
2728 | } | |
2729 | ||
2730 | #ifdef S_IFLNK | |
2731 | DEFUN ("make-symbolic-link", Fmake_symbolic_link, Smake_symbolic_link, 2, 3, | |
8c1a1077 PJ |
2732 | "FMake symbolic link to file: \nFMake symbolic link to file %s: \np", |
2733 | doc: /* Make a symbolic link to FILENAME, named LINKNAME. Both args strings. | |
2734 | Signals a `file-already-exists' error if a file LINKNAME already exists | |
2735 | unless optional third argument OK-IF-ALREADY-EXISTS is non-nil. | |
2736 | A number as third arg means request confirmation if LINKNAME already exists. | |
2737 | This happens for interactive use with M-x. */) | |
2738 | (filename, linkname, ok_if_already_exists) | |
e5d77022 | 2739 | Lisp_Object filename, linkname, ok_if_already_exists; |
570d7624 JB |
2740 | { |
2741 | #ifdef NO_ARG_ARRAY | |
2742 | Lisp_Object args[2]; | |
2743 | #endif | |
32f4334d | 2744 | Lisp_Object handler; |
b1d1b865 RS |
2745 | Lisp_Object encoded_filename, encoded_linkname; |
2746 | struct gcpro gcpro1, gcpro2, gcpro3, gcpro4; | |
570d7624 | 2747 | |
b1d1b865 RS |
2748 | GCPRO4 (filename, linkname, encoded_filename, encoded_linkname); |
2749 | encoded_filename = encoded_linkname = Qnil; | |
b7826503 PJ |
2750 | CHECK_STRING (filename); |
2751 | CHECK_STRING (linkname); | |
d9bc1c99 RS |
2752 | /* If the link target has a ~, we must expand it to get |
2753 | a truly valid file name. Otherwise, do not expand; | |
2754 | we want to permit links to relative file names. */ | |
2755 | if (XSTRING (filename)->data[0] == '~') | |
2756 | filename = Fexpand_file_name (filename, Qnil); | |
e5d77022 | 2757 | linkname = Fexpand_file_name (linkname, Qnil); |
32f4334d RS |
2758 | |
2759 | /* If the file name has special constructs in it, | |
2760 | call the corresponding file handler. */ | |
49307295 | 2761 | handler = Ffind_file_name_handler (filename, Qmake_symbolic_link); |
32f4334d | 2762 | if (!NILP (handler)) |
36712b0a KH |
2763 | RETURN_UNGCPRO (call4 (handler, Qmake_symbolic_link, filename, |
2764 | linkname, ok_if_already_exists)); | |
32f4334d | 2765 | |
adc6741c RS |
2766 | /* If the new link name has special constructs in it, |
2767 | call the corresponding file handler. */ | |
2768 | handler = Ffind_file_name_handler (linkname, Qmake_symbolic_link); | |
2769 | if (!NILP (handler)) | |
2770 | RETURN_UNGCPRO (call4 (handler, Qmake_symbolic_link, filename, | |
2771 | linkname, ok_if_already_exists)); | |
2772 | ||
b1d1b865 RS |
2773 | encoded_filename = ENCODE_FILE (filename); |
2774 | encoded_linkname = ENCODE_FILE (linkname); | |
2775 | ||
265a9e55 | 2776 | if (NILP (ok_if_already_exists) |
93c30b5f | 2777 | || INTEGERP (ok_if_already_exists)) |
b1d1b865 | 2778 | barf_or_query_if_file_exists (encoded_linkname, "make it a link", |
b8b29dc9 | 2779 | INTEGERP (ok_if_already_exists), 0, 0); |
b1d1b865 RS |
2780 | if (0 > symlink (XSTRING (encoded_filename)->data, |
2781 | XSTRING (encoded_linkname)->data)) | |
570d7624 JB |
2782 | { |
2783 | /* If we didn't complain already, silently delete existing file. */ | |
2784 | if (errno == EEXIST) | |
2785 | { | |
b1d1b865 RS |
2786 | unlink (XSTRING (encoded_linkname)->data); |
2787 | if (0 <= symlink (XSTRING (encoded_filename)->data, | |
2788 | XSTRING (encoded_linkname)->data)) | |
1a04498e KH |
2789 | { |
2790 | UNGCPRO; | |
2791 | return Qnil; | |
2792 | } | |
570d7624 JB |
2793 | } |
2794 | ||
2795 | #ifdef NO_ARG_ARRAY | |
2796 | args[0] = filename; | |
e5d77022 | 2797 | args[1] = linkname; |
570d7624 JB |
2798 | report_file_error ("Making symbolic link", Flist (2, args)); |
2799 | #else | |
2800 | report_file_error ("Making symbolic link", Flist (2, &filename)); | |
2801 | #endif | |
2802 | } | |
2803 | UNGCPRO; | |
2804 | return Qnil; | |
2805 | } | |
2806 | #endif /* S_IFLNK */ | |
2807 | ||
2808 | #ifdef VMS | |
2809 | ||
2810 | DEFUN ("define-logical-name", Fdefine_logical_name, Sdefine_logical_name, | |
2811 | 2, 2, "sDefine logical name: \nsDefine logical name %s as: ", | |
8c1a1077 PJ |
2812 | doc: /* Define the job-wide logical name NAME to have the value STRING. |
2813 | If STRING is nil or a null string, the logical name NAME is deleted. */) | |
2814 | (name, string) | |
3b7f6e60 | 2815 | Lisp_Object name; |
570d7624 JB |
2816 | Lisp_Object string; |
2817 | { | |
b7826503 | 2818 | CHECK_STRING (name); |
265a9e55 | 2819 | if (NILP (string)) |
3b7f6e60 | 2820 | delete_logical_name (XSTRING (name)->data); |
570d7624 JB |
2821 | else |
2822 | { | |
b7826503 | 2823 | CHECK_STRING (string); |
570d7624 JB |
2824 | |
2825 | if (XSTRING (string)->size == 0) | |
3b7f6e60 | 2826 | delete_logical_name (XSTRING (name)->data); |
570d7624 | 2827 | else |
3b7f6e60 | 2828 | define_logical_name (XSTRING (name)->data, XSTRING (string)->data); |
570d7624 JB |
2829 | } |
2830 | ||
2831 | return string; | |
2832 | } | |
2833 | #endif /* VMS */ | |
2834 | ||
2835 | #ifdef HPUX_NET | |
2836 | ||
2837 | DEFUN ("sysnetunam", Fsysnetunam, Ssysnetunam, 2, 2, 0, | |
8c1a1077 | 2838 | doc: /* Open a network connection to PATH using LOGIN as the login string. */) |
570d7624 JB |
2839 | (path, login) |
2840 | Lisp_Object path, login; | |
2841 | { | |
2842 | int netresult; | |
199607e4 | 2843 | |
b7826503 PJ |
2844 | CHECK_STRING (path); |
2845 | CHECK_STRING (login); | |
199607e4 | 2846 | |
570d7624 JB |
2847 | netresult = netunam (XSTRING (path)->data, XSTRING (login)->data); |
2848 | ||
2849 | if (netresult == -1) | |
2850 | return Qnil; | |
2851 | else | |
2852 | return Qt; | |
2853 | } | |
2854 | #endif /* HPUX_NET */ | |
2855 | \f | |
2856 | DEFUN ("file-name-absolute-p", Ffile_name_absolute_p, Sfile_name_absolute_p, | |
2857 | 1, 1, 0, | |
8c1a1077 PJ |
2858 | doc: /* Return t if file FILENAME specifies an absolute file name. |
2859 | On Unix, this is a name starting with a `/' or a `~'. */) | |
570d7624 JB |
2860 | (filename) |
2861 | Lisp_Object filename; | |
2862 | { | |
2863 | unsigned char *ptr; | |
2864 | ||
b7826503 | 2865 | CHECK_STRING (filename); |
570d7624 | 2866 | ptr = XSTRING (filename)->data; |
5e570b75 | 2867 | if (IS_DIRECTORY_SEP (*ptr) || *ptr == '~' |
570d7624 JB |
2868 | #ifdef VMS |
2869 | /* ??? This criterion is probably wrong for '<'. */ | |
2870 | || index (ptr, ':') || index (ptr, '<') | |
2871 | || (*ptr == '[' && (ptr[1] != '-' || (ptr[2] != '.' && ptr[2] != ']')) | |
2872 | && ptr[1] != '.') | |
2873 | #endif /* VMS */ | |
5e570b75 | 2874 | #ifdef DOS_NT |
199607e4 | 2875 | || (IS_DRIVE (*ptr) && ptr[1] == ':' && IS_DIRECTORY_SEP (ptr[2])) |
4c3c22f3 | 2876 | #endif |
570d7624 JB |
2877 | ) |
2878 | return Qt; | |
2879 | else | |
2880 | return Qnil; | |
2881 | } | |
3beeedfe RS |
2882 | \f |
2883 | /* Return nonzero if file FILENAME exists and can be executed. */ | |
2884 | ||
2885 | static int | |
2886 | check_executable (filename) | |
2887 | char *filename; | |
2888 | { | |
3be3c08e RS |
2889 | #ifdef DOS_NT |
2890 | int len = strlen (filename); | |
2891 | char *suffix; | |
2892 | struct stat st; | |
2893 | if (stat (filename, &st) < 0) | |
2894 | return 0; | |
34ead71a | 2895 | #if defined (WINDOWSNT) || (defined (MSDOS) && __DJGPP__ > 1) |
199607e4 RS |
2896 | return ((st.st_mode & S_IEXEC) != 0); |
2897 | #else | |
3be3c08e RS |
2898 | return (S_ISREG (st.st_mode) |
2899 | && len >= 5 | |
2900 | && (stricmp ((suffix = filename + len-4), ".com") == 0 | |
2901 | || stricmp (suffix, ".exe") == 0 | |
2dc3be7e RS |
2902 | || stricmp (suffix, ".bat") == 0) |
2903 | || (st.st_mode & S_IFMT) == S_IFDIR); | |
199607e4 | 2904 | #endif /* not WINDOWSNT */ |
3be3c08e | 2905 | #else /* not DOS_NT */ |
de0be7dd RS |
2906 | #ifdef HAVE_EUIDACCESS |
2907 | return (euidaccess (filename, 1) >= 0); | |
3beeedfe RS |
2908 | #else |
2909 | /* Access isn't quite right because it uses the real uid | |
2910 | and we really want to test with the effective uid. | |
2911 | But Unix doesn't give us a right way to do it. */ | |
2912 | return (access (filename, 1) >= 0); | |
2913 | #endif | |
3be3c08e | 2914 | #endif /* not DOS_NT */ |
3beeedfe RS |
2915 | } |
2916 | ||
2917 | /* Return nonzero if file FILENAME exists and can be written. */ | |
2918 | ||
2919 | static int | |
2920 | check_writable (filename) | |
2921 | char *filename; | |
2922 | { | |
3be3c08e RS |
2923 | #ifdef MSDOS |
2924 | struct stat st; | |
2925 | if (stat (filename, &st) < 0) | |
2926 | return 0; | |
2927 | return (st.st_mode & S_IWRITE || (st.st_mode & S_IFMT) == S_IFDIR); | |
2928 | #else /* not MSDOS */ | |
41f3fb38 KH |
2929 | #ifdef HAVE_EUIDACCESS |
2930 | return (euidaccess (filename, 2) >= 0); | |
3beeedfe RS |
2931 | #else |
2932 | /* Access isn't quite right because it uses the real uid | |
2933 | and we really want to test with the effective uid. | |
2934 | But Unix doesn't give us a right way to do it. | |
2935 | Opening with O_WRONLY could work for an ordinary file, | |
2936 | but would lose for directories. */ | |
2937 | return (access (filename, 2) >= 0); | |
2938 | #endif | |
3be3c08e | 2939 | #endif /* not MSDOS */ |
3beeedfe | 2940 | } |
570d7624 JB |
2941 | |
2942 | DEFUN ("file-exists-p", Ffile_exists_p, Sfile_exists_p, 1, 1, 0, | |
8c1a1077 PJ |
2943 | doc: /* Return t if file FILENAME exists. (This does not mean you can read it.) |
2944 | See also `file-readable-p' and `file-attributes'. */) | |
2945 | (filename) | |
570d7624 JB |
2946 | Lisp_Object filename; |
2947 | { | |
199607e4 | 2948 | Lisp_Object absname; |
32f4334d | 2949 | Lisp_Object handler; |
4018b5ef | 2950 | struct stat statbuf; |
570d7624 | 2951 | |
b7826503 | 2952 | CHECK_STRING (filename); |
199607e4 | 2953 | absname = Fexpand_file_name (filename, Qnil); |
32f4334d RS |
2954 | |
2955 | /* If the file name has special constructs in it, | |
2956 | call the corresponding file handler. */ | |
199607e4 | 2957 | handler = Ffind_file_name_handler (absname, Qfile_exists_p); |
32f4334d | 2958 | if (!NILP (handler)) |
199607e4 | 2959 | return call2 (handler, Qfile_exists_p, absname); |
32f4334d | 2960 | |
b1d1b865 RS |
2961 | absname = ENCODE_FILE (absname); |
2962 | ||
199607e4 | 2963 | return (stat (XSTRING (absname)->data, &statbuf) >= 0) ? Qt : Qnil; |
570d7624 JB |
2964 | } |
2965 | ||
2966 | DEFUN ("file-executable-p", Ffile_executable_p, Sfile_executable_p, 1, 1, 0, | |
8c1a1077 PJ |
2967 | doc: /* Return t if FILENAME can be executed by you. |
2968 | For a directory, this means you can access files in that directory. */) | |
2969 | (filename) | |
2970 | Lisp_Object filename; | |
570d7624 | 2971 | { |
199607e4 | 2972 | Lisp_Object absname; |
32f4334d | 2973 | Lisp_Object handler; |
570d7624 | 2974 | |
b7826503 | 2975 | CHECK_STRING (filename); |
199607e4 | 2976 | absname = Fexpand_file_name (filename, Qnil); |
32f4334d RS |
2977 | |
2978 | /* If the file name has special constructs in it, | |
2979 | call the corresponding file handler. */ | |
199607e4 | 2980 | handler = Ffind_file_name_handler (absname, Qfile_executable_p); |
32f4334d | 2981 | if (!NILP (handler)) |
199607e4 | 2982 | return call2 (handler, Qfile_executable_p, absname); |
32f4334d | 2983 | |
b1d1b865 RS |
2984 | absname = ENCODE_FILE (absname); |
2985 | ||
199607e4 | 2986 | return (check_executable (XSTRING (absname)->data) ? Qt : Qnil); |
570d7624 JB |
2987 | } |
2988 | ||
2989 | DEFUN ("file-readable-p", Ffile_readable_p, Sfile_readable_p, 1, 1, 0, | |
8c1a1077 PJ |
2990 | doc: /* Return t if file FILENAME exists and you can read it. |
2991 | See also `file-exists-p' and `file-attributes'. */) | |
2992 | (filename) | |
570d7624 JB |
2993 | Lisp_Object filename; |
2994 | { | |
199607e4 | 2995 | Lisp_Object absname; |
32f4334d | 2996 | Lisp_Object handler; |
4018b5ef | 2997 | int desc; |
bb369dc6 RS |
2998 | int flags; |
2999 | struct stat statbuf; | |
570d7624 | 3000 | |
b7826503 | 3001 | CHECK_STRING (filename); |
199607e4 | 3002 | absname = Fexpand_file_name (filename, Qnil); |
32f4334d RS |
3003 | |
3004 | /* If the file name has special constructs in it, | |
3005 | call the corresponding file handler. */ | |
199607e4 | 3006 | handler = Ffind_file_name_handler (absname, Qfile_readable_p); |
32f4334d | 3007 | if (!NILP (handler)) |
199607e4 | 3008 | return call2 (handler, Qfile_readable_p, absname); |
32f4334d | 3009 | |
b1d1b865 RS |
3010 | absname = ENCODE_FILE (absname); |
3011 | ||
fb4c6c96 AC |
3012 | #if defined(DOS_NT) || defined(macintosh) |
3013 | /* Under MS-DOS, Windows, and Macintosh, open does not work for | |
3014 | directories. */ | |
199607e4 | 3015 | if (access (XSTRING (absname)->data, 0) == 0) |
a8a7d065 RS |
3016 | return Qt; |
3017 | return Qnil; | |
fb4c6c96 | 3018 | #else /* not DOS_NT and not macintosh */ |
bb369dc6 RS |
3019 | flags = O_RDONLY; |
3020 | #if defined (S_ISFIFO) && defined (O_NONBLOCK) | |
3021 | /* Opening a fifo without O_NONBLOCK can wait. | |
3022 | We don't want to wait. But we don't want to mess wth O_NONBLOCK | |
3023 | except in the case of a fifo, on a system which handles it. */ | |
3024 | desc = stat (XSTRING (absname)->data, &statbuf); | |
3025 | if (desc < 0) | |
3026 | return Qnil; | |
3027 | if (S_ISFIFO (statbuf.st_mode)) | |
3028 | flags |= O_NONBLOCK; | |
3029 | #endif | |
68c45bf0 | 3030 | desc = emacs_open (XSTRING (absname)->data, flags, 0); |
4018b5ef RS |
3031 | if (desc < 0) |
3032 | return Qnil; | |
68c45bf0 | 3033 | emacs_close (desc); |
4018b5ef | 3034 | return Qt; |
fb4c6c96 | 3035 | #endif /* not DOS_NT and not macintosh */ |
570d7624 JB |
3036 | } |
3037 | ||
f793dc6c RS |
3038 | /* Having this before file-symlink-p mysteriously caused it to be forgotten |
3039 | on the RT/PC. */ | |
3040 | DEFUN ("file-writable-p", Ffile_writable_p, Sfile_writable_p, 1, 1, 0, | |
8c1a1077 PJ |
3041 | doc: /* Return t if file FILENAME can be written or created by you. */) |
3042 | (filename) | |
f793dc6c RS |
3043 | Lisp_Object filename; |
3044 | { | |
b1d1b865 | 3045 | Lisp_Object absname, dir, encoded; |
f793dc6c RS |
3046 | Lisp_Object handler; |
3047 | struct stat statbuf; | |
3048 | ||
b7826503 | 3049 | CHECK_STRING (filename); |
199607e4 | 3050 | absname = Fexpand_file_name (filename, Qnil); |
f793dc6c RS |
3051 | |
3052 | /* If the file name has special constructs in it, | |
3053 | call the corresponding file handler. */ | |
199607e4 | 3054 | handler = Ffind_file_name_handler (absname, Qfile_writable_p); |
f793dc6c | 3055 | if (!NILP (handler)) |
199607e4 | 3056 | return call2 (handler, Qfile_writable_p, absname); |
f793dc6c | 3057 | |
b1d1b865 RS |
3058 | encoded = ENCODE_FILE (absname); |
3059 | if (stat (XSTRING (encoded)->data, &statbuf) >= 0) | |
3060 | return (check_writable (XSTRING (encoded)->data) | |
f793dc6c | 3061 | ? Qt : Qnil); |
b1d1b865 | 3062 | |
199607e4 | 3063 | dir = Ffile_name_directory (absname); |
f793dc6c RS |
3064 | #ifdef VMS |
3065 | if (!NILP (dir)) | |
3066 | dir = Fdirectory_file_name (dir); | |
3067 | #endif /* VMS */ | |
3068 | #ifdef MSDOS | |
3069 | if (!NILP (dir)) | |
3070 | dir = Fdirectory_file_name (dir); | |
3071 | #endif /* MSDOS */ | |
b1d1b865 RS |
3072 | |
3073 | dir = ENCODE_FILE (dir); | |
e3e8a75a GM |
3074 | #ifdef WINDOWSNT |
3075 | /* The read-only attribute of the parent directory doesn't affect | |
3076 | whether a file or directory can be created within it. Some day we | |
3077 | should check ACLs though, which do affect this. */ | |
3078 | if (stat (XSTRING (dir)->data, &statbuf) < 0) | |
3079 | return Qnil; | |
3080 | return (statbuf.st_mode & S_IFMT) == S_IFDIR ? Qt : Qnil; | |
3081 | #else | |
f793dc6c RS |
3082 | return (check_writable (!NILP (dir) ? (char *) XSTRING (dir)->data : "") |
3083 | ? Qt : Qnil); | |
e3e8a75a | 3084 | #endif |
f793dc6c RS |
3085 | } |
3086 | \f | |
1f8653eb | 3087 | DEFUN ("access-file", Faccess_file, Saccess_file, 2, 2, 0, |
8c1a1077 PJ |
3088 | doc: /* Access file FILENAME, and get an error if that does not work. |
3089 | The second argument STRING is used in the error message. | |
3090 | If there is no error, we return nil. */) | |
3091 | (filename, string) | |
1f8653eb RS |
3092 | Lisp_Object filename, string; |
3093 | { | |
49475635 | 3094 | Lisp_Object handler, encoded_filename, absname; |
1f8653eb RS |
3095 | int fd; |
3096 | ||
b7826503 | 3097 | CHECK_STRING (filename); |
49475635 EZ |
3098 | absname = Fexpand_file_name (filename, Qnil); |
3099 | ||
b7826503 | 3100 | CHECK_STRING (string); |
1f8653eb RS |
3101 | |
3102 | /* If the file name has special constructs in it, | |
3103 | call the corresponding file handler. */ | |
49475635 | 3104 | handler = Ffind_file_name_handler (absname, Qaccess_file); |
1f8653eb | 3105 | if (!NILP (handler)) |
49475635 | 3106 | return call3 (handler, Qaccess_file, absname, string); |
1f8653eb | 3107 | |
49475635 | 3108 | encoded_filename = ENCODE_FILE (absname); |
b1d1b865 | 3109 | |
68c45bf0 | 3110 | fd = emacs_open (XSTRING (encoded_filename)->data, O_RDONLY, 0); |
1f8653eb RS |
3111 | if (fd < 0) |
3112 | report_file_error (XSTRING (string)->data, Fcons (filename, Qnil)); | |
68c45bf0 | 3113 | emacs_close (fd); |
1f8653eb RS |
3114 | |
3115 | return Qnil; | |
3116 | } | |
3117 | \f | |
570d7624 | 3118 | DEFUN ("file-symlink-p", Ffile_symlink_p, Sfile_symlink_p, 1, 1, 0, |
8c1a1077 PJ |
3119 | doc: /* Return non-nil if file FILENAME is the name of a symbolic link. |
3120 | The value is the name of the file to which it is linked. | |
3121 | Otherwise returns nil. */) | |
3122 | (filename) | |
570d7624 JB |
3123 | Lisp_Object filename; |
3124 | { | |
3125 | #ifdef S_IFLNK | |
3126 | char *buf; | |
3127 | int bufsize; | |
3128 | int valsize; | |
3129 | Lisp_Object val; | |
32f4334d | 3130 | Lisp_Object handler; |
570d7624 | 3131 | |
b7826503 | 3132 | CHECK_STRING (filename); |
570d7624 JB |
3133 | filename = Fexpand_file_name (filename, Qnil); |
3134 | ||
32f4334d RS |
3135 | /* If the file name has special constructs in it, |
3136 | call the corresponding file handler. */ | |
49307295 | 3137 | handler = Ffind_file_name_handler (filename, Qfile_symlink_p); |
32f4334d RS |
3138 | if (!NILP (handler)) |
3139 | return call2 (handler, Qfile_symlink_p, filename); | |
3140 | ||
b1d1b865 RS |
3141 | filename = ENCODE_FILE (filename); |
3142 | ||
81c3310d GM |
3143 | bufsize = 50; |
3144 | buf = NULL; | |
3145 | do | |
570d7624 | 3146 | { |
81c3310d GM |
3147 | bufsize *= 2; |
3148 | buf = (char *) xrealloc (buf, bufsize); | |
570d7624 | 3149 | bzero (buf, bufsize); |
81c3310d GM |
3150 | |
3151 | errno = 0; | |
570d7624 | 3152 | valsize = readlink (XSTRING (filename)->data, buf, bufsize); |
bcdd93b3 GM |
3153 | if (valsize == -1) |
3154 | { | |
81c3310d GM |
3155 | #ifdef ERANGE |
3156 | /* HP-UX reports ERANGE if buffer is too small. */ | |
bcdd93b3 GM |
3157 | if (errno == ERANGE) |
3158 | valsize = bufsize; | |
3159 | else | |
81c3310d | 3160 | #endif |
bcdd93b3 GM |
3161 | { |
3162 | xfree (buf); | |
3163 | return Qnil; | |
3164 | } | |
81c3310d | 3165 | } |
570d7624 | 3166 | } |
81c3310d GM |
3167 | while (valsize >= bufsize); |
3168 | ||
570d7624 | 3169 | val = make_string (buf, valsize); |
69ac1891 GM |
3170 | if (buf[0] == '/' && index (buf, ':')) |
3171 | val = concat2 (build_string ("/:"), val); | |
9ac0d9e0 | 3172 | xfree (buf); |
cd913586 KH |
3173 | val = DECODE_FILE (val); |
3174 | return val; | |
570d7624 JB |
3175 | #else /* not S_IFLNK */ |
3176 | return Qnil; | |
3177 | #endif /* not S_IFLNK */ | |
3178 | } | |
3179 | ||
570d7624 | 3180 | DEFUN ("file-directory-p", Ffile_directory_p, Sfile_directory_p, 1, 1, 0, |
8c1a1077 PJ |
3181 | doc: /* Return t if FILENAME names an existing directory. |
3182 | Symbolic links to directories count as directories. | |
3183 | See `file-symlink-p' to distinguish symlinks. */) | |
3184 | (filename) | |
570d7624 JB |
3185 | Lisp_Object filename; |
3186 | { | |
199607e4 | 3187 | register Lisp_Object absname; |
570d7624 | 3188 | struct stat st; |
32f4334d | 3189 | Lisp_Object handler; |
570d7624 | 3190 | |
199607e4 | 3191 | absname = expand_and_dir_to_file (filename, current_buffer->directory); |
570d7624 | 3192 | |
32f4334d RS |
3193 | /* If the file name has special constructs in it, |
3194 | call the corresponding file handler. */ | |
199607e4 | 3195 | handler = Ffind_file_name_handler (absname, Qfile_directory_p); |
32f4334d | 3196 | if (!NILP (handler)) |
199607e4 | 3197 | return call2 (handler, Qfile_directory_p, absname); |
32f4334d | 3198 | |
b1d1b865 RS |
3199 | absname = ENCODE_FILE (absname); |
3200 | ||
199607e4 | 3201 | if (stat (XSTRING (absname)->data, &st) < 0) |
570d7624 JB |
3202 | return Qnil; |
3203 | return (st.st_mode & S_IFMT) == S_IFDIR ? Qt : Qnil; | |
3204 | } | |
3205 | ||
b72dea2a | 3206 | DEFUN ("file-accessible-directory-p", Ffile_accessible_directory_p, Sfile_accessible_directory_p, 1, 1, 0, |
e385ec41 RS |
3207 | doc: /* Return t if file FILENAME names a directory you can open. |
3208 | For the value to be t, FILENAME must specify the name of a directory as a file, | |
3209 | and the directory must allow you to open files in it. In order to use a | |
8c1a1077 PJ |
3210 | directory as a buffer's current directory, this predicate must return true. |
3211 | A directory name spec may be given instead; then the value is t | |
3212 | if the directory so specified exists and really is a readable and | |
3213 | searchable directory. */) | |
3214 | (filename) | |
b72dea2a JB |
3215 | Lisp_Object filename; |
3216 | { | |
32f4334d | 3217 | Lisp_Object handler; |
1a04498e | 3218 | int tem; |
d26859eb | 3219 | struct gcpro gcpro1; |
32f4334d RS |
3220 | |
3221 | /* If the file name has special constructs in it, | |
3222 | call the corresponding file handler. */ | |
49307295 | 3223 | handler = Ffind_file_name_handler (filename, Qfile_accessible_directory_p); |
32f4334d RS |
3224 | if (!NILP (handler)) |
3225 | return call2 (handler, Qfile_accessible_directory_p, filename); | |
3226 | ||
d26859eb KH |
3227 | /* It's an unlikely combination, but yes we really do need to gcpro: |
3228 | Suppose that file-accessible-directory-p has no handler, but | |
3229 | file-directory-p does have a handler; this handler causes a GC which | |
3230 | relocates the string in `filename'; and finally file-directory-p | |
3231 | returns non-nil. Then we would end up passing a garbaged string | |
3232 | to file-executable-p. */ | |
3233 | GCPRO1 (filename); | |
1a04498e KH |
3234 | tem = (NILP (Ffile_directory_p (filename)) |
3235 | || NILP (Ffile_executable_p (filename))); | |
d26859eb | 3236 | UNGCPRO; |
1a04498e | 3237 | return tem ? Qnil : Qt; |
b72dea2a JB |
3238 | } |
3239 | ||
f793dc6c | 3240 | DEFUN ("file-regular-p", Ffile_regular_p, Sfile_regular_p, 1, 1, 0, |
8c1a1077 PJ |
3241 | doc: /* Return t if file FILENAME is the name of a regular file. |
3242 | This is the sort of file that holds an ordinary stream of data bytes. */) | |
3243 | (filename) | |
f793dc6c RS |
3244 | Lisp_Object filename; |
3245 | { | |
199607e4 | 3246 | register Lisp_Object absname; |
f793dc6c RS |
3247 | struct stat st; |
3248 | Lisp_Object handler; | |
3249 | ||
199607e4 | 3250 | absname = expand_and_dir_to_file (filename, current_buffer->directory); |
f793dc6c RS |
3251 | |
3252 | /* If the file name has special constructs in it, | |
3253 | call the corresponding file handler. */ | |
199607e4 | 3254 | handler = Ffind_file_name_handler (absname, Qfile_regular_p); |
f793dc6c | 3255 | if (!NILP (handler)) |
199607e4 | 3256 | return call2 (handler, Qfile_regular_p, absname); |
f793dc6c | 3257 | |
b1d1b865 RS |
3258 | absname = ENCODE_FILE (absname); |
3259 | ||
c1c4693e RS |
3260 | #ifdef WINDOWSNT |
3261 | { | |
3262 | int result; | |
3263 | Lisp_Object tem = Vw32_get_true_file_attributes; | |
3264 | ||
3265 | /* Tell stat to use expensive method to get accurate info. */ | |
3266 | Vw32_get_true_file_attributes = Qt; | |
3267 | result = stat (XSTRING (absname)->data, &st); | |
3268 | Vw32_get_true_file_attributes = tem; | |
3269 | ||
3270 | if (result < 0) | |
3271 | return Qnil; | |
3272 | return (st.st_mode & S_IFMT) == S_IFREG ? Qt : Qnil; | |
3273 | } | |
3274 | #else | |
4cd8344a | 3275 | if (stat (XSTRING (absname)->data, &st) < 0) |
f793dc6c RS |
3276 | return Qnil; |
3277 | return (st.st_mode & S_IFMT) == S_IFREG ? Qt : Qnil; | |
c1c4693e | 3278 | #endif |
f793dc6c RS |
3279 | } |
3280 | \f | |
570d7624 | 3281 | DEFUN ("file-modes", Ffile_modes, Sfile_modes, 1, 1, 0, |
8c1a1077 PJ |
3282 | doc: /* Return mode bits of file named FILENAME, as an integer. */) |
3283 | (filename) | |
570d7624 JB |
3284 | Lisp_Object filename; |
3285 | { | |
199607e4 | 3286 | Lisp_Object absname; |
570d7624 | 3287 | struct stat st; |
32f4334d | 3288 | Lisp_Object handler; |
570d7624 | 3289 | |
199607e4 | 3290 | absname = expand_and_dir_to_file (filename, current_buffer->directory); |
570d7624 | 3291 | |
32f4334d RS |
3292 | /* If the file name has special constructs in it, |
3293 | call the corresponding file handler. */ | |
199607e4 | 3294 | handler = Ffind_file_name_handler (absname, Qfile_modes); |
32f4334d | 3295 | if (!NILP (handler)) |
199607e4 | 3296 | return call2 (handler, Qfile_modes, absname); |
32f4334d | 3297 | |
b1d1b865 RS |
3298 | absname = ENCODE_FILE (absname); |
3299 | ||
199607e4 | 3300 | if (stat (XSTRING (absname)->data, &st) < 0) |
570d7624 | 3301 | return Qnil; |
34ead71a | 3302 | #if defined (MSDOS) && __DJGPP__ < 2 |
199607e4 | 3303 | if (check_executable (XSTRING (absname)->data)) |
3be3c08e | 3304 | st.st_mode |= S_IEXEC; |
34ead71a | 3305 | #endif /* MSDOS && __DJGPP__ < 2 */ |
3ace87e3 | 3306 | |
570d7624 JB |
3307 | return make_number (st.st_mode & 07777); |
3308 | } | |
3309 | ||
3310 | DEFUN ("set-file-modes", Fset_file_modes, Sset_file_modes, 2, 2, 0, | |
8c1a1077 PJ |
3311 | doc: /* Set mode bits of file named FILENAME to MODE (an integer). |
3312 | Only the 12 low bits of MODE are used. */) | |
570d7624 JB |
3313 | (filename, mode) |
3314 | Lisp_Object filename, mode; | |
3315 | { | |
b1d1b865 | 3316 | Lisp_Object absname, encoded_absname; |
32f4334d | 3317 | Lisp_Object handler; |
570d7624 | 3318 | |
199607e4 | 3319 | absname = Fexpand_file_name (filename, current_buffer->directory); |
b7826503 | 3320 | CHECK_NUMBER (mode); |
570d7624 | 3321 | |
32f4334d RS |
3322 | /* If the file name has special constructs in it, |
3323 | call the corresponding file handler. */ | |
199607e4 | 3324 | handler = Ffind_file_name_handler (absname, Qset_file_modes); |
32f4334d | 3325 | if (!NILP (handler)) |
199607e4 | 3326 | return call3 (handler, Qset_file_modes, absname, mode); |
32f4334d | 3327 | |
b1d1b865 RS |
3328 | encoded_absname = ENCODE_FILE (absname); |
3329 | ||
3330 | if (chmod (XSTRING (encoded_absname)->data, XINT (mode)) < 0) | |
199607e4 | 3331 | report_file_error ("Doing chmod", Fcons (absname, Qnil)); |
570d7624 JB |
3332 | |
3333 | return Qnil; | |
3334 | } | |
3335 | ||
c24e9a53 | 3336 | DEFUN ("set-default-file-modes", Fset_default_file_modes, Sset_default_file_modes, 1, 1, 0, |
8c1a1077 PJ |
3337 | doc: /* Set the file permission bits for newly created files. |
3338 | The argument MODE should be an integer; only the low 9 bits are used. | |
3339 | This setting is inherited by subprocesses. */) | |
3340 | (mode) | |
5f85ea58 | 3341 | Lisp_Object mode; |
36a8c287 | 3342 | { |
b7826503 | 3343 | CHECK_NUMBER (mode); |
199607e4 | 3344 | |
5f85ea58 | 3345 | umask ((~ XINT (mode)) & 0777); |
36a8c287 JB |
3346 | |
3347 | return Qnil; | |
3348 | } | |
3349 | ||
c24e9a53 | 3350 | DEFUN ("default-file-modes", Fdefault_file_modes, Sdefault_file_modes, 0, 0, 0, |
8c1a1077 PJ |
3351 | doc: /* Return the default file protection for created files. |
3352 | The value is an integer. */) | |
3353 | () | |
36a8c287 | 3354 | { |
5f85ea58 RS |
3355 | int realmask; |
3356 | Lisp_Object value; | |
36a8c287 | 3357 | |
5f85ea58 RS |
3358 | realmask = umask (0); |
3359 | umask (realmask); | |
36a8c287 | 3360 | |
46283abe | 3361 | XSETINT (value, (~ realmask) & 0777); |
5f85ea58 | 3362 | return value; |
36a8c287 | 3363 | } |
5df5e07c | 3364 | |
f793dc6c | 3365 | \f |
5df5e07c GM |
3366 | #ifdef __NetBSD__ |
3367 | #define unix 42 | |
3368 | #endif | |
85ffea93 | 3369 | |
5df5e07c | 3370 | #ifdef unix |
85ffea93 | 3371 | DEFUN ("unix-sync", Funix_sync, Sunix_sync, 0, 0, "", |
8c1a1077 PJ |
3372 | doc: /* Tell Unix to finish all pending disk updates. */) |
3373 | () | |
85ffea93 RS |
3374 | { |
3375 | sync (); | |
3376 | return Qnil; | |
3377 | } | |
3378 | ||
3379 | #endif /* unix */ | |
3380 | ||
570d7624 | 3381 | DEFUN ("file-newer-than-file-p", Ffile_newer_than_file_p, Sfile_newer_than_file_p, 2, 2, 0, |
8c1a1077 PJ |
3382 | doc: /* Return t if file FILE1 is newer than file FILE2. |
3383 | If FILE1 does not exist, the answer is nil; | |
3384 | otherwise, if FILE2 does not exist, the answer is t. */) | |
3385 | (file1, file2) | |
570d7624 JB |
3386 | Lisp_Object file1, file2; |
3387 | { | |
199607e4 | 3388 | Lisp_Object absname1, absname2; |
570d7624 JB |
3389 | struct stat st; |
3390 | int mtime1; | |
32f4334d | 3391 | Lisp_Object handler; |
09121adc | 3392 | struct gcpro gcpro1, gcpro2; |
570d7624 | 3393 | |
b7826503 PJ |
3394 | CHECK_STRING (file1); |
3395 | CHECK_STRING (file2); | |
570d7624 | 3396 | |
199607e4 RS |
3397 | absname1 = Qnil; |
3398 | GCPRO2 (absname1, file2); | |
3399 | absname1 = expand_and_dir_to_file (file1, current_buffer->directory); | |
3400 | absname2 = expand_and_dir_to_file (file2, current_buffer->directory); | |
09121adc | 3401 | UNGCPRO; |
570d7624 | 3402 | |
32f4334d RS |
3403 | /* If the file name has special constructs in it, |
3404 | call the corresponding file handler. */ | |
199607e4 | 3405 | handler = Ffind_file_name_handler (absname1, Qfile_newer_than_file_p); |
51cf6d37 | 3406 | if (NILP (handler)) |
199607e4 | 3407 | handler = Ffind_file_name_handler (absname2, Qfile_newer_than_file_p); |
32f4334d | 3408 | if (!NILP (handler)) |
199607e4 | 3409 | return call3 (handler, Qfile_newer_than_file_p, absname1, absname2); |
32f4334d | 3410 | |
b1d1b865 RS |
3411 | GCPRO2 (absname1, absname2); |
3412 | absname1 = ENCODE_FILE (absname1); | |
3413 | absname2 = ENCODE_FILE (absname2); | |
3414 | UNGCPRO; | |
3415 | ||
199607e4 | 3416 | if (stat (XSTRING (absname1)->data, &st) < 0) |
570d7624 JB |
3417 | return Qnil; |
3418 | ||
3419 | mtime1 = st.st_mtime; | |
3420 | ||
199607e4 | 3421 | if (stat (XSTRING (absname2)->data, &st) < 0) |
570d7624 JB |
3422 | return Qt; |
3423 | ||
3424 | return (mtime1 > st.st_mtime) ? Qt : Qnil; | |
3425 | } | |
3426 | \f | |
5e570b75 | 3427 | #ifdef DOS_NT |
4c3c22f3 | 3428 | Lisp_Object Qfind_buffer_file_type; |
5e570b75 | 3429 | #endif /* DOS_NT */ |
4c3c22f3 | 3430 | |
6fdaa9a0 KH |
3431 | #ifndef READ_BUF_SIZE |
3432 | #define READ_BUF_SIZE (64 << 10) | |
3433 | #endif | |
3434 | ||
98a7d268 KH |
3435 | extern void adjust_markers_for_delete P_ ((int, int, int, int)); |
3436 | ||
3437 | /* This function is called after Lisp functions to decide a coding | |
3438 | system are called, or when they cause an error. Before they are | |
3439 | called, the current buffer is set unibyte and it contains only a | |
3440 | newly inserted text (thus the buffer was empty before the | |
3441 | insertion). | |
3442 | ||
3443 | The functions may set markers, overlays, text properties, or even | |
3444 | alter the buffer contents, change the current buffer. | |
3445 | ||
3446 | Here, we reset all those changes by: | |
3447 | o set back the current buffer. | |
3448 | o move all markers and overlays to BEG. | |
3449 | o remove all text properties. | |
3450 | o set back the buffer multibyteness. */ | |
f736ffbf KH |
3451 | |
3452 | static Lisp_Object | |
98a7d268 KH |
3453 | decide_coding_unwind (unwind_data) |
3454 | Lisp_Object unwind_data; | |
f736ffbf | 3455 | { |
98a7d268 | 3456 | Lisp_Object multibyte, undo_list, buffer; |
f736ffbf | 3457 | |
98a7d268 KH |
3458 | multibyte = XCAR (unwind_data); |
3459 | unwind_data = XCDR (unwind_data); | |
3460 | undo_list = XCAR (unwind_data); | |
3461 | buffer = XCDR (unwind_data); | |
3462 | ||
3463 | if (current_buffer != XBUFFER (buffer)) | |
3464 | set_buffer_internal (XBUFFER (buffer)); | |
3465 | adjust_markers_for_delete (BEG, BEG_BYTE, Z, Z_BYTE); | |
3466 | adjust_overlays_for_delete (BEG, Z - BEG); | |
3467 | BUF_INTERVALS (current_buffer) = 0; | |
3468 | TEMP_SET_PT_BOTH (BEG, BEG_BYTE); | |
3469 | ||
3470 | /* Now we are safe to change the buffer's multibyteness directly. */ | |
3471 | current_buffer->enable_multibyte_characters = multibyte; | |
3472 | current_buffer->undo_list = undo_list; | |
f736ffbf KH |
3473 | |
3474 | return Qnil; | |
3475 | } | |
3476 | ||
55587f8a | 3477 | |
1b978129 | 3478 | /* Used to pass values from insert-file-contents to read_non_regular. */ |
55587f8a | 3479 | |
1b978129 GM |
3480 | static int non_regular_fd; |
3481 | static int non_regular_inserted; | |
3482 | static int non_regular_nbytes; | |
55587f8a | 3483 | |
55587f8a | 3484 | |
1b978129 GM |
3485 | /* Read from a non-regular file. |
3486 | Read non_regular_trytry bytes max from non_regular_fd. | |
3487 | Non_regular_inserted specifies where to put the read bytes. | |
3488 | Value is the number of bytes read. */ | |
55587f8a GM |
3489 | |
3490 | static Lisp_Object | |
1b978129 | 3491 | read_non_regular () |
55587f8a | 3492 | { |
1b978129 GM |
3493 | int nbytes; |
3494 | ||
3495 | immediate_quit = 1; | |
3496 | QUIT; | |
3497 | nbytes = emacs_read (non_regular_fd, | |
3498 | BEG_ADDR + PT_BYTE - 1 + non_regular_inserted, | |
3499 | non_regular_nbytes); | |
1b978129 GM |
3500 | immediate_quit = 0; |
3501 | return make_number (nbytes); | |
3502 | } | |
55587f8a | 3503 | |
d0e2444e | 3504 | |
1b978129 GM |
3505 | /* Condition-case handler used when reading from non-regular files |
3506 | in insert-file-contents. */ | |
3507 | ||
3508 | static Lisp_Object | |
3509 | read_non_regular_quit () | |
3510 | { | |
55587f8a GM |
3511 | return Qnil; |
3512 | } | |
3513 | ||
3514 | ||
570d7624 | 3515 | DEFUN ("insert-file-contents", Finsert_file_contents, Sinsert_file_contents, |
8c1a1077 PJ |
3516 | 1, 5, 0, |
3517 | doc: /* Insert contents of file FILENAME after point. | |
3518 | Returns list of absolute file name and number of bytes inserted. | |
3519 | If second argument VISIT is non-nil, the buffer's visited filename | |
3520 | and last save file modtime are set, and it is marked unmodified. | |
3521 | If visiting and the file does not exist, visiting is completed | |
3522 | before the error is signaled. | |
3523 | The optional third and fourth arguments BEG and END | |
3524 | specify what portion of the file to insert. | |
3525 | These arguments count bytes in the file, not characters in the buffer. | |
3526 | If VISIT is non-nil, BEG and END must be nil. | |
3527 | ||
3528 | If optional fifth argument REPLACE is non-nil, | |
3529 | it means replace the current buffer contents (in the accessible portion) | |
3530 | with the file contents. This is better than simply deleting and inserting | |
3531 | the whole thing because (1) it preserves some marker positions | |
3532 | and (2) it puts less data in the undo list. | |
3533 | When REPLACE is non-nil, the value is the number of characters actually read, | |
3534 | which is often less than the number of characters to be read. | |
3535 | ||
3536 | This does code conversion according to the value of | |
3537 | `coding-system-for-read' or `file-coding-system-alist', | |
3538 | and sets the variable `last-coding-system-used' to the coding system | |
3539 | actually used. */) | |
3540 | (filename, visit, beg, end, replace) | |
3d0387c0 | 3541 | Lisp_Object filename, visit, beg, end, replace; |
570d7624 JB |
3542 | { |
3543 | struct stat st; | |
3544 | register int fd; | |
ec7adf26 | 3545 | int inserted = 0; |
570d7624 | 3546 | register int how_much; |
6fdaa9a0 | 3547 | register int unprocessed; |
ed8e506f | 3548 | int count = BINDING_STACK_SIZE (); |
b1d1b865 RS |
3549 | struct gcpro gcpro1, gcpro2, gcpro3, gcpro4; |
3550 | Lisp_Object handler, val, insval, orig_filename; | |
d6a3cc15 | 3551 | Lisp_Object p; |
6bbd7a29 | 3552 | int total = 0; |
53c34c46 | 3553 | int not_regular = 0; |
feb9dc27 | 3554 | unsigned char read_buf[READ_BUF_SIZE]; |
6fdaa9a0 | 3555 | struct coding_system coding; |
3dbcf3f6 | 3556 | unsigned char buffer[1 << 14]; |
727a0b4a | 3557 | int replace_handled = 0; |
ec7adf26 | 3558 | int set_coding_system = 0; |
f736ffbf | 3559 | int coding_system_decided = 0; |
1b978129 | 3560 | int read_quit = 0; |
32f4334d | 3561 | |
95385625 RS |
3562 | if (current_buffer->base_buffer && ! NILP (visit)) |
3563 | error ("Cannot do file visiting in an indirect buffer"); | |
3564 | ||
3565 | if (!NILP (current_buffer->read_only)) | |
3566 | Fbarf_if_buffer_read_only (); | |
3567 | ||
32f4334d | 3568 | val = Qnil; |
d6a3cc15 | 3569 | p = Qnil; |
b1d1b865 | 3570 | orig_filename = Qnil; |
32f4334d | 3571 | |
b1d1b865 | 3572 | GCPRO4 (filename, val, p, orig_filename); |
570d7624 | 3573 | |
b7826503 | 3574 | CHECK_STRING (filename); |
570d7624 JB |
3575 | filename = Fexpand_file_name (filename, Qnil); |
3576 | ||
32f4334d RS |
3577 | /* If the file name has special constructs in it, |
3578 | call the corresponding file handler. */ | |
49307295 | 3579 | handler = Ffind_file_name_handler (filename, Qinsert_file_contents); |
32f4334d RS |
3580 | if (!NILP (handler)) |
3581 | { | |
3d0387c0 RS |
3582 | val = call6 (handler, Qinsert_file_contents, filename, |
3583 | visit, beg, end, replace); | |
03699b14 KR |
3584 | if (CONSP (val) && CONSP (XCDR (val))) |
3585 | inserted = XINT (XCAR (XCDR (val))); | |
32f4334d RS |
3586 | goto handled; |
3587 | } | |
3588 | ||
b1d1b865 RS |
3589 | orig_filename = filename; |
3590 | filename = ENCODE_FILE (filename); | |
3591 | ||
570d7624 JB |
3592 | fd = -1; |
3593 | ||
c1c4693e RS |
3594 | #ifdef WINDOWSNT |
3595 | { | |
3596 | Lisp_Object tem = Vw32_get_true_file_attributes; | |
3597 | ||
3598 | /* Tell stat to use expensive method to get accurate info. */ | |
3599 | Vw32_get_true_file_attributes = Qt; | |
3600 | total = stat (XSTRING (filename)->data, &st); | |
3601 | Vw32_get_true_file_attributes = tem; | |
3602 | } | |
3603 | if (total < 0) | |
3604 | #else | |
570d7624 | 3605 | #ifndef APOLLO |
99bc28f4 | 3606 | if (stat (XSTRING (filename)->data, &st) < 0) |
570d7624 | 3607 | #else |
68c45bf0 | 3608 | if ((fd = emacs_open (XSTRING (filename)->data, O_RDONLY, 0)) < 0 |
570d7624 JB |
3609 | || fstat (fd, &st) < 0) |
3610 | #endif /* not APOLLO */ | |
c1c4693e | 3611 | #endif /* WINDOWSNT */ |
570d7624 | 3612 | { |
68c45bf0 | 3613 | if (fd >= 0) emacs_close (fd); |
99bc28f4 | 3614 | badopen: |
265a9e55 | 3615 | if (NILP (visit)) |
b1d1b865 | 3616 | report_file_error ("Opening input file", Fcons (orig_filename, Qnil)); |
570d7624 JB |
3617 | st.st_mtime = -1; |
3618 | how_much = 0; | |
0de6b8f4 | 3619 | if (!NILP (Vcoding_system_for_read)) |
22d92d6b | 3620 | Fset (Qbuffer_file_coding_system, Vcoding_system_for_read); |
570d7624 JB |
3621 | goto notfound; |
3622 | } | |
3623 | ||
99bc28f4 | 3624 | #ifdef S_IFREG |
be53b411 JB |
3625 | /* This code will need to be changed in order to work on named |
3626 | pipes, and it's probably just not worth it. So we should at | |
3627 | least signal an error. */ | |
99bc28f4 | 3628 | if (!S_ISREG (st.st_mode)) |
330bfe57 | 3629 | { |
d4b8687b RS |
3630 | not_regular = 1; |
3631 | ||
3632 | if (! NILP (visit)) | |
3633 | goto notfound; | |
3634 | ||
3635 | if (! NILP (replace) || ! NILP (beg) || ! NILP (end)) | |
330bfe57 RS |
3636 | Fsignal (Qfile_error, |
3637 | Fcons (build_string ("not a regular file"), | |
b1d1b865 | 3638 | Fcons (orig_filename, Qnil))); |
330bfe57 | 3639 | } |
be53b411 JB |
3640 | #endif |
3641 | ||
99bc28f4 | 3642 | if (fd < 0) |
68c45bf0 | 3643 | if ((fd = emacs_open (XSTRING (filename)->data, O_RDONLY, 0)) < 0) |
99bc28f4 KH |
3644 | goto badopen; |
3645 | ||
3646 | /* Replacement should preserve point as it preserves markers. */ | |
3647 | if (!NILP (replace)) | |
3648 | record_unwind_protect (restore_point_unwind, Fpoint_marker ()); | |
3649 | ||
3650 | record_unwind_protect (close_file_unwind, make_number (fd)); | |
3651 | ||
570d7624 | 3652 | /* Supposedly happens on VMS. */ |
d4b8687b | 3653 | if (! not_regular && st.st_size < 0) |
570d7624 | 3654 | error ("File size is negative"); |
be53b411 | 3655 | |
9c856db9 GM |
3656 | /* Prevent redisplay optimizations. */ |
3657 | current_buffer->clip_changed = 1; | |
3658 | ||
9f57b6b4 KH |
3659 | if (!NILP (visit)) |
3660 | { | |
3661 | if (!NILP (beg) || !NILP (end)) | |
3662 | error ("Attempt to visit less than an entire file"); | |
3663 | if (BEG < Z && NILP (replace)) | |
3664 | error ("Cannot do file visiting in a non-empty buffer"); | |
3665 | } | |
7fded690 JB |
3666 | |
3667 | if (!NILP (beg)) | |
b7826503 | 3668 | CHECK_NUMBER (beg); |
7fded690 | 3669 | else |
2acfd7ae | 3670 | XSETFASTINT (beg, 0); |
7fded690 JB |
3671 | |
3672 | if (!NILP (end)) | |
b7826503 | 3673 | CHECK_NUMBER (end); |
7fded690 JB |
3674 | else |
3675 | { | |
d4b8687b RS |
3676 | if (! not_regular) |
3677 | { | |
3678 | XSETINT (end, st.st_size); | |
68c45bf0 PE |
3679 | |
3680 | /* Arithmetic overflow can occur if an Emacs integer cannot | |
3681 | represent the file size, or if the calculations below | |
3682 | overflow. The calculations below double the file size | |
3683 | twice, so check that it can be multiplied by 4 safely. */ | |
3684 | if (XINT (end) != st.st_size | |
3685 | || ((int) st.st_size * 4) / 4 != st.st_size) | |
d4b8687b | 3686 | error ("Maximum buffer size exceeded"); |
d21dd12d GM |
3687 | |
3688 | /* The file size returned from stat may be zero, but data | |
3689 | may be readable nonetheless, for example when this is a | |
3690 | file in the /proc filesystem. */ | |
3691 | if (st.st_size == 0) | |
3692 | XSETINT (end, READ_BUF_SIZE); | |
d4b8687b | 3693 | } |
7fded690 JB |
3694 | } |
3695 | ||
f736ffbf KH |
3696 | if (BEG < Z) |
3697 | { | |
3698 | /* Decide the coding system to use for reading the file now | |
3699 | because we can't use an optimized method for handling | |
3700 | `coding:' tag if the current buffer is not empty. */ | |
3701 | Lisp_Object val; | |
3702 | val = Qnil; | |
feb9dc27 | 3703 | |
f736ffbf KH |
3704 | if (!NILP (Vcoding_system_for_read)) |
3705 | val = Vcoding_system_for_read; | |
3706 | else if (! NILP (replace)) | |
3707 | /* In REPLACE mode, we can use the same coding system | |
3708 | that was used to visit the file. */ | |
3709 | val = current_buffer->buffer_file_coding_system; | |
3710 | else | |
3711 | { | |
3712 | /* Don't try looking inside a file for a coding system | |
3713 | specification if it is not seekable. */ | |
3714 | if (! not_regular && ! NILP (Vset_auto_coding_function)) | |
3715 | { | |
3716 | /* Find a coding system specified in the heading two | |
3717 | lines or in the tailing several lines of the file. | |
3718 | We assume that the 1K-byte and 3K-byte for heading | |
003a7eaa | 3719 | and tailing respectively are sufficient for this |
f736ffbf | 3720 | purpose. */ |
07590973 | 3721 | int nread; |
f736ffbf KH |
3722 | |
3723 | if (st.st_size <= (1024 * 4)) | |
68c45bf0 | 3724 | nread = emacs_read (fd, read_buf, 1024 * 4); |
f736ffbf KH |
3725 | else |
3726 | { | |
68c45bf0 | 3727 | nread = emacs_read (fd, read_buf, 1024); |
f736ffbf KH |
3728 | if (nread >= 0) |
3729 | { | |
3730 | if (lseek (fd, st.st_size - (1024 * 3), 0) < 0) | |
3731 | report_file_error ("Setting file position", | |
3732 | Fcons (orig_filename, Qnil)); | |
68c45bf0 | 3733 | nread += emacs_read (fd, read_buf + nread, 1024 * 3); |
f736ffbf KH |
3734 | } |
3735 | } | |
feb9dc27 | 3736 | |
f736ffbf KH |
3737 | if (nread < 0) |
3738 | error ("IO error reading %s: %s", | |
68c45bf0 | 3739 | XSTRING (orig_filename)->data, emacs_strerror (errno)); |
f736ffbf KH |
3740 | else if (nread > 0) |
3741 | { | |
f736ffbf | 3742 | struct buffer *prev = current_buffer; |
1d92afcd | 3743 | int count1; |
f736ffbf KH |
3744 | |
3745 | record_unwind_protect (Fset_buffer, Fcurrent_buffer ()); | |
1d92afcd GM |
3746 | |
3747 | /* The call to temp_output_buffer_setup binds | |
3748 | standard-output. */ | |
3749 | count1 = specpdl_ptr - specpdl; | |
f736ffbf | 3750 | temp_output_buffer_setup (" *code-converting-work*"); |
1d92afcd | 3751 | |
f736ffbf KH |
3752 | set_buffer_internal (XBUFFER (Vstandard_output)); |
3753 | current_buffer->enable_multibyte_characters = Qnil; | |
3754 | insert_1_both (read_buf, nread, nread, 0, 0, 0); | |
3755 | TEMP_SET_PT_BOTH (BEG, BEG_BYTE); | |
1255deb9 KH |
3756 | val = call2 (Vset_auto_coding_function, |
3757 | filename, make_number (nread)); | |
f736ffbf | 3758 | set_buffer_internal (prev); |
1d92afcd GM |
3759 | |
3760 | /* Remove the binding for standard-output. */ | |
3761 | unbind_to (count1, Qnil); | |
3762 | ||
f736ffbf KH |
3763 | /* Discard the unwind protect for recovering the |
3764 | current buffer. */ | |
3765 | specpdl_ptr--; | |
3766 | ||
3767 | /* Rewind the file for the actual read done later. */ | |
3768 | if (lseek (fd, 0, 0) < 0) | |
3769 | report_file_error ("Setting file position", | |
3770 | Fcons (orig_filename, Qnil)); | |
3771 | } | |
3772 | } | |
feb9dc27 | 3773 | |
f736ffbf KH |
3774 | if (NILP (val)) |
3775 | { | |
3776 | /* If we have not yet decided a coding system, check | |
3777 | file-coding-system-alist. */ | |
3778 | Lisp_Object args[6], coding_systems; | |
3779 | ||
3780 | args[0] = Qinsert_file_contents, args[1] = orig_filename; | |
3781 | args[2] = visit, args[3] = beg, args[4] = end, args[5] = replace; | |
3782 | coding_systems = Ffind_operation_coding_system (6, args); | |
3783 | if (CONSP (coding_systems)) | |
03699b14 | 3784 | val = XCAR (coding_systems); |
f736ffbf KH |
3785 | } |
3786 | } | |
c9e82392 | 3787 | |
f736ffbf | 3788 | setup_coding_system (Fcheck_coding_system (val), &coding); |
f8569325 DL |
3789 | /* Ensure we set Vlast_coding_system_used. */ |
3790 | set_coding_system = 1; | |
c8a6d68a | 3791 | |
237a6fd2 RS |
3792 | if (NILP (current_buffer->enable_multibyte_characters) |
3793 | && ! NILP (val)) | |
3794 | /* We must suppress all character code conversion except for | |
3795 | end-of-line conversion. */ | |
57515cfe | 3796 | setup_raw_text_coding_system (&coding); |
54369368 | 3797 | |
8c3b9441 KH |
3798 | coding.src_multibyte = 0; |
3799 | coding.dst_multibyte | |
3800 | = !NILP (current_buffer->enable_multibyte_characters); | |
f736ffbf KH |
3801 | coding_system_decided = 1; |
3802 | } | |
6cf71bf1 | 3803 | |
3d0387c0 RS |
3804 | /* If requested, replace the accessible part of the buffer |
3805 | with the file contents. Avoid replacing text at the | |
3806 | beginning or end of the buffer that matches the file contents; | |
3dbcf3f6 RS |
3807 | that preserves markers pointing to the unchanged parts. |
3808 | ||
3809 | Here we implement this feature in an optimized way | |
3810 | for the case where code conversion is NOT needed. | |
3811 | The following if-statement handles the case of conversion | |
727a0b4a RS |
3812 | in a less optimal way. |
3813 | ||
3814 | If the code conversion is "automatic" then we try using this | |
3815 | method and hope for the best. | |
3816 | But if we discover the need for conversion, we give up on this method | |
3817 | and let the following if-statement handle the replace job. */ | |
3dbcf3f6 | 3818 | if (!NILP (replace) |
f736ffbf | 3819 | && BEGV < ZV |
8c3b9441 | 3820 | && !(coding.common_flags & CODING_REQUIRE_DECODING_MASK)) |
3d0387c0 | 3821 | { |
ec7adf26 RS |
3822 | /* same_at_start and same_at_end count bytes, |
3823 | because file access counts bytes | |
3824 | and BEG and END count bytes. */ | |
3825 | int same_at_start = BEGV_BYTE; | |
3826 | int same_at_end = ZV_BYTE; | |
9c28748f | 3827 | int overlap; |
6fdaa9a0 KH |
3828 | /* There is still a possibility we will find the need to do code |
3829 | conversion. If that happens, we set this variable to 1 to | |
727a0b4a | 3830 | give up on handling REPLACE in the optimized way. */ |
6fdaa9a0 | 3831 | int giveup_match_end = 0; |
9c28748f | 3832 | |
4d2a0879 RS |
3833 | if (XINT (beg) != 0) |
3834 | { | |
3835 | if (lseek (fd, XINT (beg), 0) < 0) | |
3836 | report_file_error ("Setting file position", | |
b1d1b865 | 3837 | Fcons (orig_filename, Qnil)); |
4d2a0879 RS |
3838 | } |
3839 | ||
3d0387c0 RS |
3840 | immediate_quit = 1; |
3841 | QUIT; | |
3842 | /* Count how many chars at the start of the file | |
3843 | match the text at the beginning of the buffer. */ | |
3844 | while (1) | |
3845 | { | |
3846 | int nread, bufpos; | |
3847 | ||
68c45bf0 | 3848 | nread = emacs_read (fd, buffer, sizeof buffer); |
3d0387c0 RS |
3849 | if (nread < 0) |
3850 | error ("IO error reading %s: %s", | |
68c45bf0 | 3851 | XSTRING (orig_filename)->data, emacs_strerror (errno)); |
3d0387c0 RS |
3852 | else if (nread == 0) |
3853 | break; | |
6fdaa9a0 | 3854 | |
0ef69138 | 3855 | if (coding.type == coding_type_undecided) |
727a0b4a | 3856 | detect_coding (&coding, buffer, nread); |
8c3b9441 | 3857 | if (coding.common_flags & CODING_REQUIRE_DECODING_MASK) |
727a0b4a RS |
3858 | /* We found that the file should be decoded somehow. |
3859 | Let's give up here. */ | |
3860 | { | |
3861 | giveup_match_end = 1; | |
3862 | break; | |
3863 | } | |
3864 | ||
0ef69138 | 3865 | if (coding.eol_type == CODING_EOL_UNDECIDED) |
727a0b4a | 3866 | detect_eol (&coding, buffer, nread); |
1b335d29 | 3867 | if (coding.eol_type != CODING_EOL_UNDECIDED |
70ec4328 | 3868 | && coding.eol_type != CODING_EOL_LF) |
727a0b4a RS |
3869 | /* We found that the format of eol should be decoded. |
3870 | Let's give up here. */ | |
3871 | { | |
3872 | giveup_match_end = 1; | |
3873 | break; | |
3874 | } | |
3875 | ||
3d0387c0 | 3876 | bufpos = 0; |
ec7adf26 | 3877 | while (bufpos < nread && same_at_start < ZV_BYTE |
6fdaa9a0 | 3878 | && FETCH_BYTE (same_at_start) == buffer[bufpos]) |
3d0387c0 RS |
3879 | same_at_start++, bufpos++; |
3880 | /* If we found a discrepancy, stop the scan. | |
8e6208c5 | 3881 | Otherwise loop around and scan the next bufferful. */ |
3d0387c0 RS |
3882 | if (bufpos != nread) |
3883 | break; | |
3884 | } | |
3885 | immediate_quit = 0; | |
3886 | /* If the file matches the buffer completely, | |
3887 | there's no need to replace anything. */ | |
ec7adf26 | 3888 | if (same_at_start - BEGV_BYTE == XINT (end)) |
3d0387c0 | 3889 | { |
68c45bf0 | 3890 | emacs_close (fd); |
a1d2b64a | 3891 | specpdl_ptr--; |
1051b3b3 | 3892 | /* Truncate the buffer to the size of the file. */ |
7dae4502 | 3893 | del_range_1 (same_at_start, same_at_end, 0, 0); |
3d0387c0 RS |
3894 | goto handled; |
3895 | } | |
3896 | immediate_quit = 1; | |
3897 | QUIT; | |
3898 | /* Count how many chars at the end of the file | |
6fdaa9a0 KH |
3899 | match the text at the end of the buffer. But, if we have |
3900 | already found that decoding is necessary, don't waste time. */ | |
3901 | while (!giveup_match_end) | |
3d0387c0 RS |
3902 | { |
3903 | int total_read, nread, bufpos, curpos, trial; | |
3904 | ||
3905 | /* At what file position are we now scanning? */ | |
ec7adf26 | 3906 | curpos = XINT (end) - (ZV_BYTE - same_at_end); |
fc81fa9e KH |
3907 | /* If the entire file matches the buffer tail, stop the scan. */ |
3908 | if (curpos == 0) | |
3909 | break; | |
3d0387c0 RS |
3910 | /* How much can we scan in the next step? */ |
3911 | trial = min (curpos, sizeof buffer); | |
3912 | if (lseek (fd, curpos - trial, 0) < 0) | |
3913 | report_file_error ("Setting file position", | |
b1d1b865 | 3914 | Fcons (orig_filename, Qnil)); |
3d0387c0 | 3915 | |
b02439c8 | 3916 | total_read = nread = 0; |
3d0387c0 RS |
3917 | while (total_read < trial) |
3918 | { | |
68c45bf0 | 3919 | nread = emacs_read (fd, buffer + total_read, trial - total_read); |
2bd2273e | 3920 | if (nread < 0) |
3d0387c0 | 3921 | error ("IO error reading %s: %s", |
68c45bf0 | 3922 | XSTRING (orig_filename)->data, emacs_strerror (errno)); |
2bd2273e GM |
3923 | else if (nread == 0) |
3924 | break; | |
3d0387c0 RS |
3925 | total_read += nread; |
3926 | } | |
2bd2273e | 3927 | |
8e6208c5 | 3928 | /* Scan this bufferful from the end, comparing with |
3d0387c0 RS |
3929 | the Emacs buffer. */ |
3930 | bufpos = total_read; | |
2bd2273e | 3931 | |
3d0387c0 RS |
3932 | /* Compare with same_at_start to avoid counting some buffer text |
3933 | as matching both at the file's beginning and at the end. */ | |
3934 | while (bufpos > 0 && same_at_end > same_at_start | |
6fdaa9a0 | 3935 | && FETCH_BYTE (same_at_end - 1) == buffer[bufpos - 1]) |
3d0387c0 | 3936 | same_at_end--, bufpos--; |
727a0b4a | 3937 | |
3d0387c0 | 3938 | /* If we found a discrepancy, stop the scan. |
8e6208c5 | 3939 | Otherwise loop around and scan the preceding bufferful. */ |
3d0387c0 | 3940 | if (bufpos != 0) |
727a0b4a RS |
3941 | { |
3942 | /* If this discrepancy is because of code conversion, | |
3943 | we cannot use this method; giveup and try the other. */ | |
3944 | if (same_at_end > same_at_start | |
3945 | && FETCH_BYTE (same_at_end - 1) >= 0200 | |
71312b68 | 3946 | && ! NILP (current_buffer->enable_multibyte_characters) |
c8a6d68a | 3947 | && (CODING_MAY_REQUIRE_DECODING (&coding))) |
727a0b4a RS |
3948 | giveup_match_end = 1; |
3949 | break; | |
3950 | } | |
b02439c8 GM |
3951 | |
3952 | if (nread == 0) | |
3953 | break; | |
3d0387c0 RS |
3954 | } |
3955 | immediate_quit = 0; | |
9c28748f | 3956 | |
727a0b4a RS |
3957 | if (! giveup_match_end) |
3958 | { | |
ec7adf26 RS |
3959 | int temp; |
3960 | ||
727a0b4a | 3961 | /* We win! We can handle REPLACE the optimized way. */ |
9c28748f | 3962 | |
20f6783d RS |
3963 | /* Extend the start of non-matching text area to multibyte |
3964 | character boundary. */ | |
3965 | if (! NILP (current_buffer->enable_multibyte_characters)) | |
3966 | while (same_at_start > BEGV_BYTE | |
3967 | && ! CHAR_HEAD_P (FETCH_BYTE (same_at_start))) | |
3968 | same_at_start--; | |
3969 | ||
3970 | /* Extend the end of non-matching text area to multibyte | |
71312b68 RS |
3971 | character boundary. */ |
3972 | if (! NILP (current_buffer->enable_multibyte_characters)) | |
ec7adf26 RS |
3973 | while (same_at_end < ZV_BYTE |
3974 | && ! CHAR_HEAD_P (FETCH_BYTE (same_at_end))) | |
71312b68 RS |
3975 | same_at_end++; |
3976 | ||
727a0b4a | 3977 | /* Don't try to reuse the same piece of text twice. */ |
ec7adf26 RS |
3978 | overlap = (same_at_start - BEGV_BYTE |
3979 | - (same_at_end + st.st_size - ZV)); | |
727a0b4a RS |
3980 | if (overlap > 0) |
3981 | same_at_end += overlap; | |
9c28748f | 3982 | |
727a0b4a | 3983 | /* Arrange to read only the nonmatching middle part of the file. */ |
ec7adf26 RS |
3984 | XSETFASTINT (beg, XINT (beg) + (same_at_start - BEGV_BYTE)); |
3985 | XSETFASTINT (end, XINT (end) - (ZV_BYTE - same_at_end)); | |
3dbcf3f6 | 3986 | |
ec7adf26 | 3987 | del_range_byte (same_at_start, same_at_end, 0); |
727a0b4a | 3988 | /* Insert from the file at the proper position. */ |
ec7adf26 RS |
3989 | temp = BYTE_TO_CHAR (same_at_start); |
3990 | SET_PT_BOTH (temp, same_at_start); | |
727a0b4a RS |
3991 | |
3992 | /* If display currently starts at beginning of line, | |
3993 | keep it that way. */ | |
3994 | if (XBUFFER (XWINDOW (selected_window)->buffer) == current_buffer) | |
3995 | XWINDOW (selected_window)->start_at_line_beg = Fbolp (); | |
3996 | ||
3997 | replace_handled = 1; | |
3998 | } | |
3dbcf3f6 RS |
3999 | } |
4000 | ||
4001 | /* If requested, replace the accessible part of the buffer | |
4002 | with the file contents. Avoid replacing text at the | |
4003 | beginning or end of the buffer that matches the file contents; | |
4004 | that preserves markers pointing to the unchanged parts. | |
4005 | ||
4006 | Here we implement this feature for the case where code conversion | |
4007 | is needed, in a simple way that needs a lot of memory. | |
4008 | The preceding if-statement handles the case of no conversion | |
4009 | in a more optimized way. */ | |
f736ffbf | 4010 | if (!NILP (replace) && ! replace_handled && BEGV < ZV) |
3dbcf3f6 | 4011 | { |
ec7adf26 RS |
4012 | int same_at_start = BEGV_BYTE; |
4013 | int same_at_end = ZV_BYTE; | |
3dbcf3f6 RS |
4014 | int overlap; |
4015 | int bufpos; | |
4016 | /* Make sure that the gap is large enough. */ | |
4017 | int bufsize = 2 * st.st_size; | |
b00ca0d7 | 4018 | unsigned char *conversion_buffer = (unsigned char *) xmalloc (bufsize); |
ec7adf26 | 4019 | int temp; |
3dbcf3f6 RS |
4020 | |
4021 | /* First read the whole file, performing code conversion into | |
4022 | CONVERSION_BUFFER. */ | |
4023 | ||
727a0b4a RS |
4024 | if (lseek (fd, XINT (beg), 0) < 0) |
4025 | { | |
68cfd853 | 4026 | xfree (conversion_buffer); |
727a0b4a | 4027 | report_file_error ("Setting file position", |
b1d1b865 | 4028 | Fcons (orig_filename, Qnil)); |
727a0b4a RS |
4029 | } |
4030 | ||
3dbcf3f6 RS |
4031 | total = st.st_size; /* Total bytes in the file. */ |
4032 | how_much = 0; /* Bytes read from file so far. */ | |
4033 | inserted = 0; /* Bytes put into CONVERSION_BUFFER so far. */ | |
4034 | unprocessed = 0; /* Bytes not processed in previous loop. */ | |
4035 | ||
4036 | while (how_much < total) | |
4037 | { | |
4038 | /* try is reserved in some compilers (Microsoft C) */ | |
4039 | int trytry = min (total - how_much, READ_BUF_SIZE - unprocessed); | |
cadf50ff | 4040 | unsigned char *destination = read_buf + unprocessed; |
3dbcf3f6 RS |
4041 | int this; |
4042 | ||
4043 | /* Allow quitting out of the actual I/O. */ | |
4044 | immediate_quit = 1; | |
4045 | QUIT; | |
68c45bf0 | 4046 | this = emacs_read (fd, destination, trytry); |
3dbcf3f6 RS |
4047 | immediate_quit = 0; |
4048 | ||
4049 | if (this < 0 || this + unprocessed == 0) | |
4050 | { | |
4051 | how_much = this; | |
4052 | break; | |
4053 | } | |
4054 | ||
4055 | how_much += this; | |
4056 | ||
c8a6d68a | 4057 | if (CODING_MAY_REQUIRE_DECODING (&coding)) |
3dbcf3f6 | 4058 | { |
c8a6d68a | 4059 | int require, result; |
3dbcf3f6 RS |
4060 | |
4061 | this += unprocessed; | |
4062 | ||
4063 | /* If we are using more space than estimated, | |
4064 | make CONVERSION_BUFFER bigger. */ | |
4065 | require = decoding_buffer_size (&coding, this); | |
4066 | if (inserted + require + 2 * (total - how_much) > bufsize) | |
4067 | { | |
4068 | bufsize = inserted + require + 2 * (total - how_much); | |
92cf1086 | 4069 | conversion_buffer = (unsigned char *) xrealloc (conversion_buffer, bufsize); |
3dbcf3f6 RS |
4070 | } |
4071 | ||
4072 | /* Convert this batch with results in CONVERSION_BUFFER. */ | |
4073 | if (how_much >= total) /* This is the last block. */ | |
c8a6d68a | 4074 | coding.mode |= CODING_MODE_LAST_BLOCK; |
1ddb09f5 GM |
4075 | if (coding.composing != COMPOSITION_DISABLED) |
4076 | coding_allocate_composition_data (&coding, BEGV); | |
c8a6d68a KH |
4077 | result = decode_coding (&coding, read_buf, |
4078 | conversion_buffer + inserted, | |
4079 | this, bufsize - inserted); | |
3dbcf3f6 RS |
4080 | |
4081 | /* Save for next iteration whatever we didn't convert. */ | |
c8a6d68a KH |
4082 | unprocessed = this - coding.consumed; |
4083 | bcopy (read_buf + coding.consumed, read_buf, unprocessed); | |
8c3b9441 KH |
4084 | if (!NILP (current_buffer->enable_multibyte_characters)) |
4085 | this = coding.produced; | |
4086 | else | |
4087 | this = str_as_unibyte (conversion_buffer + inserted, | |
4088 | coding.produced); | |
3dbcf3f6 RS |
4089 | } |
4090 | ||
4091 | inserted += this; | |
4092 | } | |
4093 | ||
c8a6d68a | 4094 | /* At this point, INSERTED is how many characters (i.e. bytes) |
3dbcf3f6 RS |
4095 | are present in CONVERSION_BUFFER. |
4096 | HOW_MUCH should equal TOTAL, | |
4097 | or should be <= 0 if we couldn't read the file. */ | |
4098 | ||
4099 | if (how_much < 0) | |
4100 | { | |
a36837e4 | 4101 | xfree (conversion_buffer); |
3dbcf3f6 RS |
4102 | |
4103 | if (how_much == -1) | |
4104 | error ("IO error reading %s: %s", | |
68c45bf0 | 4105 | XSTRING (orig_filename)->data, emacs_strerror (errno)); |
3dbcf3f6 RS |
4106 | else if (how_much == -2) |
4107 | error ("maximum buffer size exceeded"); | |
4108 | } | |
4109 | ||
4110 | /* Compare the beginning of the converted file | |
4111 | with the buffer text. */ | |
4112 | ||
4113 | bufpos = 0; | |
4114 | while (bufpos < inserted && same_at_start < same_at_end | |
4115 | && FETCH_BYTE (same_at_start) == conversion_buffer[bufpos]) | |
4116 | same_at_start++, bufpos++; | |
4117 | ||
4118 | /* If the file matches the buffer completely, | |
4119 | there's no need to replace anything. */ | |
4120 | ||
4121 | if (bufpos == inserted) | |
4122 | { | |
a36837e4 | 4123 | xfree (conversion_buffer); |
68c45bf0 | 4124 | emacs_close (fd); |
3dbcf3f6 RS |
4125 | specpdl_ptr--; |
4126 | /* Truncate the buffer to the size of the file. */ | |
427f5aab KH |
4127 | del_range_byte (same_at_start, same_at_end, 0); |
4128 | inserted = 0; | |
3dbcf3f6 RS |
4129 | goto handled; |
4130 | } | |
4131 | ||
20f6783d RS |
4132 | /* Extend the start of non-matching text area to multibyte |
4133 | character boundary. */ | |
4134 | if (! NILP (current_buffer->enable_multibyte_characters)) | |
4135 | while (same_at_start > BEGV_BYTE | |
4136 | && ! CHAR_HEAD_P (FETCH_BYTE (same_at_start))) | |
4137 | same_at_start--; | |
4138 | ||
3dbcf3f6 RS |
4139 | /* Scan this bufferful from the end, comparing with |
4140 | the Emacs buffer. */ | |
4141 | bufpos = inserted; | |
4142 | ||
4143 | /* Compare with same_at_start to avoid counting some buffer text | |
4144 | as matching both at the file's beginning and at the end. */ | |
4145 | while (bufpos > 0 && same_at_end > same_at_start | |
4146 | && FETCH_BYTE (same_at_end - 1) == conversion_buffer[bufpos - 1]) | |
4147 | same_at_end--, bufpos--; | |
4148 | ||
20f6783d RS |
4149 | /* Extend the end of non-matching text area to multibyte |
4150 | character boundary. */ | |
4151 | if (! NILP (current_buffer->enable_multibyte_characters)) | |
4152 | while (same_at_end < ZV_BYTE | |
4153 | && ! CHAR_HEAD_P (FETCH_BYTE (same_at_end))) | |
4154 | same_at_end++; | |
4155 | ||
3dbcf3f6 | 4156 | /* Don't try to reuse the same piece of text twice. */ |
ec7adf26 | 4157 | overlap = same_at_start - BEGV_BYTE - (same_at_end + inserted - ZV_BYTE); |
3dbcf3f6 RS |
4158 | if (overlap > 0) |
4159 | same_at_end += overlap; | |
4160 | ||
727a0b4a RS |
4161 | /* If display currently starts at beginning of line, |
4162 | keep it that way. */ | |
4163 | if (XBUFFER (XWINDOW (selected_window)->buffer) == current_buffer) | |
4164 | XWINDOW (selected_window)->start_at_line_beg = Fbolp (); | |
4165 | ||
3dbcf3f6 RS |
4166 | /* Replace the chars that we need to replace, |
4167 | and update INSERTED to equal the number of bytes | |
4168 | we are taking from the file. */ | |
ec7adf26 | 4169 | inserted -= (Z_BYTE - same_at_end) + (same_at_start - BEG_BYTE); |
427f5aab | 4170 | |
643c73b9 | 4171 | if (same_at_end != same_at_start) |
427f5aab KH |
4172 | { |
4173 | del_range_byte (same_at_start, same_at_end, 0); | |
4174 | temp = GPT; | |
4175 | same_at_start = GPT_BYTE; | |
4176 | } | |
643c73b9 RS |
4177 | else |
4178 | { | |
643c73b9 | 4179 | temp = BYTE_TO_CHAR (same_at_start); |
643c73b9 | 4180 | } |
427f5aab KH |
4181 | /* Insert from the file at the proper position. */ |
4182 | SET_PT_BOTH (temp, same_at_start); | |
ec7adf26 RS |
4183 | insert_1 (conversion_buffer + same_at_start - BEG_BYTE, inserted, |
4184 | 0, 0, 0); | |
1ddb09f5 GM |
4185 | if (coding.cmp_data && coding.cmp_data->used) |
4186 | coding_restore_composition (&coding, Fcurrent_buffer ()); | |
4187 | coding_free_composition_data (&coding); | |
4188 | ||
427f5aab KH |
4189 | /* Set `inserted' to the number of inserted characters. */ |
4190 | inserted = PT - temp; | |
3dbcf3f6 | 4191 | |
93184560 | 4192 | xfree (conversion_buffer); |
68c45bf0 | 4193 | emacs_close (fd); |
3dbcf3f6 RS |
4194 | specpdl_ptr--; |
4195 | ||
3dbcf3f6 | 4196 | goto handled; |
3d0387c0 RS |
4197 | } |
4198 | ||
d4b8687b RS |
4199 | if (! not_regular) |
4200 | { | |
4201 | register Lisp_Object temp; | |
7fded690 | 4202 | |
d4b8687b | 4203 | total = XINT (end) - XINT (beg); |
570d7624 | 4204 | |
d4b8687b RS |
4205 | /* Make sure point-max won't overflow after this insertion. */ |
4206 | XSETINT (temp, total); | |
4207 | if (total != XINT (temp)) | |
4208 | error ("Maximum buffer size exceeded"); | |
4209 | } | |
4210 | else | |
4211 | /* For a special file, all we can do is guess. */ | |
4212 | total = READ_BUF_SIZE; | |
570d7624 | 4213 | |
57d8d468 | 4214 | if (NILP (visit) && total > 0) |
6c478ee2 | 4215 | prepare_to_modify_buffer (PT, PT, NULL); |
570d7624 | 4216 | |
7fe52289 | 4217 | move_gap (PT); |
7fded690 JB |
4218 | if (GAP_SIZE < total) |
4219 | make_gap (total - GAP_SIZE); | |
4220 | ||
a1d2b64a | 4221 | if (XINT (beg) != 0 || !NILP (replace)) |
7fded690 JB |
4222 | { |
4223 | if (lseek (fd, XINT (beg), 0) < 0) | |
b1d1b865 RS |
4224 | report_file_error ("Setting file position", |
4225 | Fcons (orig_filename, Qnil)); | |
7fded690 JB |
4226 | } |
4227 | ||
6fdaa9a0 | 4228 | /* In the following loop, HOW_MUCH contains the total bytes read so |
c8a6d68a KH |
4229 | far for a regular file, and not changed for a special file. But, |
4230 | before exiting the loop, it is set to a negative value if I/O | |
4231 | error occurs. */ | |
a1d2b64a | 4232 | how_much = 0; |
1b978129 | 4233 | |
6fdaa9a0 KH |
4234 | /* Total bytes inserted. */ |
4235 | inserted = 0; | |
1b978129 | 4236 | |
c8a6d68a KH |
4237 | /* Here, we don't do code conversion in the loop. It is done by |
4238 | code_convert_region after all data are read into the buffer. */ | |
1b978129 GM |
4239 | { |
4240 | int gap_size = GAP_SIZE; | |
4241 | ||
4242 | while (how_much < total) | |
4243 | { | |
5e570b75 | 4244 | /* try is reserved in some compilers (Microsoft C) */ |
1b978129 GM |
4245 | int trytry = min (total - how_much, READ_BUF_SIZE); |
4246 | int this; | |
570d7624 | 4247 | |
1b978129 GM |
4248 | if (not_regular) |
4249 | { | |
4250 | Lisp_Object val; | |
570d7624 | 4251 | |
1b978129 GM |
4252 | /* Maybe make more room. */ |
4253 | if (gap_size < trytry) | |
4254 | { | |
4255 | make_gap (total - gap_size); | |
4256 | gap_size = GAP_SIZE; | |
4257 | } | |
4258 | ||
4259 | /* Read from the file, capturing `quit'. When an | |
4260 | error occurs, end the loop, and arrange for a quit | |
4261 | to be signaled after decoding the text we read. */ | |
4262 | non_regular_fd = fd; | |
4263 | non_regular_inserted = inserted; | |
4264 | non_regular_nbytes = trytry; | |
4265 | val = internal_condition_case_1 (read_non_regular, Qnil, Qerror, | |
4266 | read_non_regular_quit); | |
4267 | if (NILP (val)) | |
4268 | { | |
4269 | read_quit = 1; | |
4270 | break; | |
4271 | } | |
4272 | ||
4273 | this = XINT (val); | |
4274 | } | |
4275 | else | |
4276 | { | |
4277 | /* Allow quitting out of the actual I/O. We don't make text | |
4278 | part of the buffer until all the reading is done, so a C-g | |
4279 | here doesn't do any harm. */ | |
4280 | immediate_quit = 1; | |
4281 | QUIT; | |
4282 | this = emacs_read (fd, BEG_ADDR + PT_BYTE - 1 + inserted, trytry); | |
4283 | immediate_quit = 0; | |
4284 | } | |
4285 | ||
4286 | if (this <= 0) | |
4287 | { | |
4288 | how_much = this; | |
4289 | break; | |
4290 | } | |
4291 | ||
4292 | gap_size -= this; | |
4293 | ||
4294 | /* For a regular file, where TOTAL is the real size, | |
4295 | count HOW_MUCH to compare with it. | |
4296 | For a special file, where TOTAL is just a buffer size, | |
4297 | so don't bother counting in HOW_MUCH. | |
4298 | (INSERTED is where we count the number of characters inserted.) */ | |
4299 | if (! not_regular) | |
4300 | how_much += this; | |
4301 | inserted += this; | |
4302 | } | |
4303 | } | |
4304 | ||
4305 | /* Make the text read part of the buffer. */ | |
4306 | GAP_SIZE -= inserted; | |
4307 | GPT += inserted; | |
4308 | GPT_BYTE += inserted; | |
4309 | ZV += inserted; | |
4310 | ZV_BYTE += inserted; | |
4311 | Z += inserted; | |
4312 | Z_BYTE += inserted; | |
6fdaa9a0 | 4313 | |
c8a6d68a KH |
4314 | if (GAP_SIZE > 0) |
4315 | /* Put an anchor to ensure multi-byte form ends at gap. */ | |
4316 | *GPT_ADDR = 0; | |
d4b8687b | 4317 | |
68c45bf0 | 4318 | emacs_close (fd); |
6fdaa9a0 | 4319 | |
c8a6d68a KH |
4320 | /* Discard the unwind protect for closing the file. */ |
4321 | specpdl_ptr--; | |
6fdaa9a0 | 4322 | |
c8a6d68a KH |
4323 | if (how_much < 0) |
4324 | error ("IO error reading %s: %s", | |
68c45bf0 | 4325 | XSTRING (orig_filename)->data, emacs_strerror (errno)); |
ec7adf26 | 4326 | |
f8569325 DL |
4327 | notfound: |
4328 | ||
2df42e09 | 4329 | if (! coding_system_decided) |
c8a6d68a | 4330 | { |
2df42e09 | 4331 | /* The coding system is not yet decided. Decide it by an |
dfe35e7b RS |
4332 | optimized method for handling `coding:' tag. |
4333 | ||
4334 | Note that we can get here only if the buffer was empty | |
4335 | before the insertion. */ | |
2df42e09 KH |
4336 | Lisp_Object val; |
4337 | val = Qnil; | |
f736ffbf | 4338 | |
2df42e09 KH |
4339 | if (!NILP (Vcoding_system_for_read)) |
4340 | val = Vcoding_system_for_read; | |
4341 | else | |
4342 | { | |
98a7d268 KH |
4343 | /* Since we are sure that the current buffer was empty |
4344 | before the insertion, we can toggle | |
4345 | enable-multibyte-characters directly here without taking | |
4346 | care of marker adjustment and byte combining problem. By | |
4347 | this way, we can run Lisp program safely before decoding | |
4348 | the inserted text. */ | |
4349 | Lisp_Object unwind_data; | |
2df42e09 KH |
4350 | int count = specpdl_ptr - specpdl; |
4351 | ||
98a7d268 KH |
4352 | unwind_data = Fcons (current_buffer->enable_multibyte_characters, |
4353 | Fcons (current_buffer->undo_list, | |
4354 | Fcurrent_buffer ())); | |
2df42e09 | 4355 | current_buffer->enable_multibyte_characters = Qnil; |
98a7d268 KH |
4356 | current_buffer->undo_list = Qt; |
4357 | record_unwind_protect (decide_coding_unwind, unwind_data); | |
4358 | ||
4359 | if (inserted > 0 && ! NILP (Vset_auto_coding_function)) | |
4360 | { | |
1255deb9 KH |
4361 | val = call2 (Vset_auto_coding_function, |
4362 | filename, make_number (inserted)); | |
2df42e09 | 4363 | } |
f736ffbf | 4364 | |
2df42e09 KH |
4365 | if (NILP (val)) |
4366 | { | |
4367 | /* If the coding system is not yet decided, check | |
4368 | file-coding-system-alist. */ | |
4369 | Lisp_Object args[6], coding_systems; | |
f736ffbf | 4370 | |
2df42e09 KH |
4371 | args[0] = Qinsert_file_contents, args[1] = orig_filename; |
4372 | args[2] = visit, args[3] = beg, args[4] = end, args[5] = Qnil; | |
4373 | coding_systems = Ffind_operation_coding_system (6, args); | |
4374 | if (CONSP (coding_systems)) | |
03699b14 | 4375 | val = XCAR (coding_systems); |
f736ffbf | 4376 | } |
98a7d268 KH |
4377 | |
4378 | unbind_to (count, Qnil); | |
4379 | inserted = Z_BYTE - BEG_BYTE; | |
2df42e09 | 4380 | } |
f736ffbf | 4381 | |
2df42e09 KH |
4382 | /* The following kludgy code is to avoid some compiler bug. |
4383 | We can't simply do | |
4384 | setup_coding_system (val, &coding); | |
4385 | on some system. */ | |
4386 | { | |
4387 | struct coding_system temp_coding; | |
4388 | setup_coding_system (val, &temp_coding); | |
4389 | bcopy (&temp_coding, &coding, sizeof coding); | |
4390 | } | |
f8569325 DL |
4391 | /* Ensure we set Vlast_coding_system_used. */ |
4392 | set_coding_system = 1; | |
f736ffbf | 4393 | |
237a6fd2 RS |
4394 | if (NILP (current_buffer->enable_multibyte_characters) |
4395 | && ! NILP (val)) | |
4396 | /* We must suppress all character code conversion except for | |
2df42e09 KH |
4397 | end-of-line conversion. */ |
4398 | setup_raw_text_coding_system (&coding); | |
6db43875 KH |
4399 | coding.src_multibyte = 0; |
4400 | coding.dst_multibyte | |
4401 | = !NILP (current_buffer->enable_multibyte_characters); | |
2df42e09 | 4402 | } |
f736ffbf | 4403 | |
8c3b9441 | 4404 | if (!NILP (visit) |
24766480 GM |
4405 | /* Can't do this if part of the buffer might be preserved. */ |
4406 | && NILP (replace) | |
8c3b9441 KH |
4407 | && (coding.type == coding_type_no_conversion |
4408 | || coding.type == coding_type_raw_text)) | |
4409 | { | |
24766480 GM |
4410 | /* Visiting a file with these coding system makes the buffer |
4411 | unibyte. */ | |
4412 | current_buffer->enable_multibyte_characters = Qnil; | |
e1249666 | 4413 | coding.dst_multibyte = 0; |
8c3b9441 KH |
4414 | } |
4415 | ||
c91beee2 | 4416 | if (inserted > 0 || coding.type == coding_type_ccl) |
2df42e09 | 4417 | { |
c8a6d68a | 4418 | if (CODING_MAY_REQUIRE_DECODING (&coding)) |
64e0ae2a KH |
4419 | { |
4420 | code_convert_region (PT, PT_BYTE, PT + inserted, PT_BYTE + inserted, | |
4421 | &coding, 0, 0); | |
8c3b9441 | 4422 | inserted = coding.produced_char; |
f8198e19 | 4423 | } |
e9cea947 AS |
4424 | else |
4425 | adjust_after_insert (PT, PT_BYTE, PT + inserted, PT_BYTE + inserted, | |
8c3b9441 | 4426 | inserted); |
2df42e09 | 4427 | } |
570d7624 | 4428 | |
04e6f79c | 4429 | #ifdef DOS_NT |
2df42e09 KH |
4430 | /* Use the conversion type to determine buffer-file-type |
4431 | (find-buffer-file-type is now used to help determine the | |
4432 | conversion). */ | |
4433 | if ((coding.eol_type == CODING_EOL_UNDECIDED | |
4434 | || coding.eol_type == CODING_EOL_LF) | |
4435 | && ! CODING_REQUIRE_DECODING (&coding)) | |
4436 | current_buffer->buffer_file_type = Qt; | |
4437 | else | |
4438 | current_buffer->buffer_file_type = Qnil; | |
04e6f79c | 4439 | #endif |
570d7624 | 4440 | |
32f4334d | 4441 | handled: |
570d7624 | 4442 | |
265a9e55 | 4443 | if (!NILP (visit)) |
570d7624 | 4444 | { |
cfadd376 RS |
4445 | if (!EQ (current_buffer->undo_list, Qt)) |
4446 | current_buffer->undo_list = Qnil; | |
570d7624 JB |
4447 | #ifdef APOLLO |
4448 | stat (XSTRING (filename)->data, &st); | |
4449 | #endif | |
62bcf009 | 4450 | |
a7e82472 RS |
4451 | if (NILP (handler)) |
4452 | { | |
4453 | current_buffer->modtime = st.st_mtime; | |
b1d1b865 | 4454 | current_buffer->filename = orig_filename; |
a7e82472 | 4455 | } |
62bcf009 | 4456 | |
95385625 | 4457 | SAVE_MODIFF = MODIFF; |
570d7624 | 4458 | current_buffer->auto_save_modified = MODIFF; |
2acfd7ae | 4459 | XSETFASTINT (current_buffer->save_length, Z - BEG); |
570d7624 | 4460 | #ifdef CLASH_DETECTION |
32f4334d RS |
4461 | if (NILP (handler)) |
4462 | { | |
f471f4c2 RS |
4463 | if (!NILP (current_buffer->file_truename)) |
4464 | unlock_file (current_buffer->file_truename); | |
32f4334d RS |
4465 | unlock_file (filename); |
4466 | } | |
570d7624 | 4467 | #endif /* CLASH_DETECTION */ |
330bfe57 RS |
4468 | if (not_regular) |
4469 | Fsignal (Qfile_error, | |
4470 | Fcons (build_string ("not a regular file"), | |
b1d1b865 | 4471 | Fcons (orig_filename, Qnil))); |
570d7624 JB |
4472 | } |
4473 | ||
0d420e88 | 4474 | /* Decode file format */ |
c8a6d68a | 4475 | if (inserted > 0) |
0d420e88 | 4476 | { |
ed8e506f GM |
4477 | int empty_undo_list_p = 0; |
4478 | ||
4479 | /* If we're anyway going to discard undo information, don't | |
4480 | record it in the first place. The buffer's undo list at this | |
4481 | point is either nil or t when visiting a file. */ | |
4482 | if (!NILP (visit)) | |
4483 | { | |
4484 | empty_undo_list_p = NILP (current_buffer->undo_list); | |
4485 | current_buffer->undo_list = Qt; | |
4486 | } | |
4487 | ||
199607e4 | 4488 | insval = call3 (Qformat_decode, |
c8a6d68a | 4489 | Qnil, make_number (inserted), visit); |
b7826503 | 4490 | CHECK_NUMBER (insval); |
c8a6d68a | 4491 | inserted = XFASTINT (insval); |
ed8e506f GM |
4492 | |
4493 | if (!NILP (visit)) | |
4494 | current_buffer->undo_list = empty_undo_list_p ? Qnil : Qt; | |
0d420e88 BG |
4495 | } |
4496 | ||
ce51c54c KH |
4497 | if (set_coding_system) |
4498 | Vlast_coding_system_used = coding.symbol; | |
4499 | ||
0342d8c5 RS |
4500 | /* Call after-change hooks for the inserted text, aside from the case |
4501 | of normal visiting (not with REPLACE), which is done in a new buffer | |
4502 | "before" the buffer is changed. */ | |
c8a6d68a | 4503 | if (inserted > 0 && total > 0 |
0342d8c5 | 4504 | && (NILP (visit) || !NILP (replace))) |
ce51c54c KH |
4505 | { |
4506 | signal_after_change (PT, 0, inserted); | |
4507 | update_compositions (PT, PT, CHECK_BORDER); | |
4508 | } | |
b56567b5 | 4509 | |
f8569325 DL |
4510 | p = Vafter_insert_file_functions; |
4511 | while (!NILP (p)) | |
d6a3cc15 | 4512 | { |
f8569325 DL |
4513 | insval = call1 (Fcar (p), make_number (inserted)); |
4514 | if (!NILP (insval)) | |
d6a3cc15 | 4515 | { |
b7826503 | 4516 | CHECK_NUMBER (insval); |
f8569325 | 4517 | inserted = XFASTINT (insval); |
d6a3cc15 | 4518 | } |
f8569325 DL |
4519 | QUIT; |
4520 | p = Fcdr (p); | |
4521 | } | |
4522 | ||
4523 | if (!NILP (visit) | |
4524 | && current_buffer->modtime == -1) | |
4525 | { | |
4526 | /* If visiting nonexistent file, return nil. */ | |
4527 | report_file_error ("Opening input file", Fcons (orig_filename, Qnil)); | |
d6a3cc15 RS |
4528 | } |
4529 | ||
1b978129 GM |
4530 | if (read_quit) |
4531 | Fsignal (Qquit, Qnil); | |
4532 | ||
ec7adf26 | 4533 | /* ??? Retval needs to be dealt with in all cases consistently. */ |
a1d2b64a | 4534 | if (NILP (val)) |
b1d1b865 | 4535 | val = Fcons (orig_filename, |
a1d2b64a RS |
4536 | Fcons (make_number (inserted), |
4537 | Qnil)); | |
4538 | ||
4539 | RETURN_UNGCPRO (unbind_to (count, val)); | |
570d7624 | 4540 | } |
7fded690 | 4541 | \f |
236a12f2 SM |
4542 | static Lisp_Object build_annotations P_ ((Lisp_Object, Lisp_Object)); |
4543 | static Lisp_Object build_annotations_2 P_ ((Lisp_Object, Lisp_Object, | |
4544 | Lisp_Object, Lisp_Object)); | |
d6a3cc15 | 4545 | |
6fc6f94b | 4546 | /* If build_annotations switched buffers, switch back to BUF. |
6fdaa9a0 KH |
4547 | Kill the temporary buffer that was selected in the meantime. |
4548 | ||
4549 | Since this kill only the last temporary buffer, some buffers remain | |
4550 | not killed if build_annotations switched buffers more than once. | |
4551 | -- K.Handa */ | |
6fc6f94b | 4552 | |
199607e4 | 4553 | static Lisp_Object |
6fc6f94b RS |
4554 | build_annotations_unwind (buf) |
4555 | Lisp_Object buf; | |
4556 | { | |
4557 | Lisp_Object tembuf; | |
4558 | ||
4559 | if (XBUFFER (buf) == current_buffer) | |
4560 | return Qnil; | |
4561 | tembuf = Fcurrent_buffer (); | |
4562 | Fset_buffer (buf); | |
4563 | Fkill_buffer (tembuf); | |
4564 | return Qnil; | |
4565 | } | |
4566 | ||
7c82a4a9 SM |
4567 | /* Decide the coding-system to encode the data with. */ |
4568 | ||
4569 | void | |
4570 | choose_write_coding_system (start, end, filename, | |
4571 | append, visit, lockname, coding) | |
4572 | Lisp_Object start, end, filename, append, visit, lockname; | |
4573 | struct coding_system *coding; | |
4574 | { | |
4575 | Lisp_Object val; | |
4576 | ||
4577 | if (auto_saving) | |
4578 | val = Qnil; | |
4579 | else if (!NILP (Vcoding_system_for_write)) | |
4580 | val = Vcoding_system_for_write; | |
4581 | else | |
4582 | { | |
4583 | /* If the variable `buffer-file-coding-system' is set locally, | |
4584 | it means that the file was read with some kind of code | |
4585 | conversion or the variable is explicitly set by users. We | |
4586 | had better write it out with the same coding system even if | |
4587 | `enable-multibyte-characters' is nil. | |
4588 | ||
4589 | If it is not set locally, we anyway have to convert EOL | |
4590 | format if the default value of `buffer-file-coding-system' | |
4591 | tells that it is not Unix-like (LF only) format. */ | |
4592 | int using_default_coding = 0; | |
4593 | int force_raw_text = 0; | |
4594 | ||
4595 | val = current_buffer->buffer_file_coding_system; | |
4596 | if (NILP (val) | |
4597 | || NILP (Flocal_variable_p (Qbuffer_file_coding_system, Qnil))) | |
4598 | { | |
4599 | val = Qnil; | |
4600 | if (NILP (current_buffer->enable_multibyte_characters)) | |
4601 | force_raw_text = 1; | |
4602 | } | |
4603 | ||
4604 | if (NILP (val)) | |
4605 | { | |
4606 | /* Check file-coding-system-alist. */ | |
4607 | Lisp_Object args[7], coding_systems; | |
4608 | ||
4609 | args[0] = Qwrite_region; args[1] = start; args[2] = end; | |
4610 | args[3] = filename; args[4] = append; args[5] = visit; | |
4611 | args[6] = lockname; | |
4612 | coding_systems = Ffind_operation_coding_system (7, args); | |
4613 | if (CONSP (coding_systems) && !NILP (XCDR (coding_systems))) | |
4614 | val = XCDR (coding_systems); | |
4615 | } | |
4616 | ||
4617 | if (NILP (val) | |
4618 | && !NILP (current_buffer->buffer_file_coding_system)) | |
4619 | { | |
4620 | /* If we still have not decided a coding system, use the | |
4621 | default value of buffer-file-coding-system. */ | |
4622 | val = current_buffer->buffer_file_coding_system; | |
4623 | using_default_coding = 1; | |
4624 | } | |
4625 | ||
4626 | if (!force_raw_text | |
4627 | && !NILP (Ffboundp (Vselect_safe_coding_system_function))) | |
4628 | /* Confirm that VAL can surely encode the current region. */ | |
4629 | val = call3 (Vselect_safe_coding_system_function, start, end, val); | |
4630 | ||
4631 | setup_coding_system (Fcheck_coding_system (val), coding); | |
4632 | if (coding->eol_type == CODING_EOL_UNDECIDED | |
4633 | && !using_default_coding) | |
4634 | { | |
4635 | if (! EQ (default_buffer_file_coding.symbol, | |
4636 | buffer_defaults.buffer_file_coding_system)) | |
4637 | setup_coding_system (buffer_defaults.buffer_file_coding_system, | |
4638 | &default_buffer_file_coding); | |
4639 | if (default_buffer_file_coding.eol_type != CODING_EOL_UNDECIDED) | |
4640 | { | |
4641 | Lisp_Object subsidiaries; | |
4642 | ||
4643 | coding->eol_type = default_buffer_file_coding.eol_type; | |
4644 | subsidiaries = Fget (coding->symbol, Qeol_type); | |
4645 | if (VECTORP (subsidiaries) | |
4646 | && XVECTOR (subsidiaries)->size == 3) | |
4647 | coding->symbol | |
4648 | = XVECTOR (subsidiaries)->contents[coding->eol_type]; | |
4649 | } | |
4650 | } | |
4651 | ||
4652 | if (force_raw_text) | |
4653 | setup_raw_text_coding_system (coding); | |
4654 | goto done_setup_coding; | |
4655 | } | |
4656 | ||
4657 | setup_coding_system (Fcheck_coding_system (val), coding); | |
4658 | ||
4659 | done_setup_coding: | |
4660 | if (!STRINGP (start) && !NILP (current_buffer->selective_display)) | |
4661 | coding->mode |= CODING_MODE_SELECTIVE_DISPLAY; | |
4662 | } | |
4663 | ||
de1d0127 | 4664 | DEFUN ("write-region", Fwrite_region, Swrite_region, 3, 7, |
8c1a1077 PJ |
4665 | "r\nFWrite region to file: \ni\ni\ni\np", |
4666 | doc: /* Write current region into specified file. | |
c2efea25 RS |
4667 | When called from a program, requires three arguments: |
4668 | START, END and FILENAME. START and END are normally buffer positions | |
4669 | specifying the part of the buffer to write. | |
4670 | If START is nil, that means to use the entire buffer contents. | |
4671 | If START is a string, then output that string to the file | |
4672 | instead of any buffer contents; END is ignored. | |
4673 | ||
8c1a1077 PJ |
4674 | Optional fourth argument APPEND if non-nil means |
4675 | append to existing file contents (if any). If it is an integer, | |
4676 | seek to that offset in the file before writing. | |
4677 | Optional fifth argument VISIT if t means | |
4678 | set the last-save-file-modtime of buffer to this file's modtime | |
4679 | and mark buffer not modified. | |
4680 | If VISIT is a string, it is a second file name; | |
4681 | the output goes to FILENAME, but the buffer is marked as visiting VISIT. | |
4682 | VISIT is also the file name to lock and unlock for clash detection. | |
4683 | If VISIT is neither t nor nil nor a string, | |
4684 | that means do not print the \"Wrote file\" message. | |
4685 | The optional sixth arg LOCKNAME, if non-nil, specifies the name to | |
4686 | use for locking and unlocking, overriding FILENAME and VISIT. | |
4687 | The optional seventh arg MUSTBENEW, if non-nil, insists on a check | |
4688 | for an existing file with the same name. If MUSTBENEW is `excl', | |
4689 | that means to get an error if the file already exists; never overwrite. | |
4690 | If MUSTBENEW is neither nil nor `excl', that means ask for | |
4691 | confirmation before overwriting, but do go ahead and overwrite the file | |
4692 | if the user confirms. | |
8c1a1077 PJ |
4693 | |
4694 | This does code conversion according to the value of | |
4695 | `coding-system-for-write', `buffer-file-coding-system', or | |
4696 | `file-coding-system-alist', and sets the variable | |
4697 | `last-coding-system-used' to the coding system actually used. */) | |
4698 | (start, end, filename, append, visit, lockname, mustbenew) | |
f7b4065f | 4699 | Lisp_Object start, end, filename, append, visit, lockname, mustbenew; |
570d7624 JB |
4700 | { |
4701 | register int desc; | |
4702 | int failure; | |
6bbd7a29 | 4703 | int save_errno = 0; |
570d7624 JB |
4704 | unsigned char *fn; |
4705 | struct stat st; | |
c975dd7a | 4706 | int tem; |
570d7624 | 4707 | int count = specpdl_ptr - specpdl; |
6fc6f94b | 4708 | int count1; |
570d7624 | 4709 | #ifdef VMS |
5e570b75 | 4710 | unsigned char *fname = 0; /* If non-0, original filename (must rename) */ |
570d7624 | 4711 | #endif /* VMS */ |
3eac9910 | 4712 | Lisp_Object handler; |
4ad827c5 | 4713 | Lisp_Object visit_file; |
65b7d3e7 | 4714 | Lisp_Object annotations; |
b1d1b865 | 4715 | Lisp_Object encoded_filename; |
d3a67486 SM |
4716 | int visiting = (EQ (visit, Qt) || STRINGP (visit)); |
4717 | int quietly = !NILP (visit); | |
7204a979 | 4718 | struct gcpro gcpro1, gcpro2, gcpro3, gcpro4, gcpro5; |
6fc6f94b | 4719 | struct buffer *given_buffer; |
5e570b75 | 4720 | #ifdef DOS_NT |
fa228724 | 4721 | int buffer_file_type = O_BINARY; |
5e570b75 | 4722 | #endif /* DOS_NT */ |
6fdaa9a0 | 4723 | struct coding_system coding; |
570d7624 | 4724 | |
d3a67486 | 4725 | if (current_buffer->base_buffer && visiting) |
95385625 RS |
4726 | error ("Cannot do file visiting in an indirect buffer"); |
4727 | ||
561cb8e1 | 4728 | if (!NILP (start) && !STRINGP (start)) |
570d7624 JB |
4729 | validate_region (&start, &end); |
4730 | ||
59fac292 | 4731 | GCPRO5 (start, filename, visit, visit_file, lockname); |
b56567b5 | 4732 | |
570d7624 | 4733 | filename = Fexpand_file_name (filename, Qnil); |
de1d0127 | 4734 | |
236a12f2 | 4735 | if (!NILP (mustbenew) && !EQ (mustbenew, Qexcl)) |
b8b29dc9 | 4736 | barf_or_query_if_file_exists (filename, "overwrite", 1, 0, 1); |
de1d0127 | 4737 | |
561cb8e1 | 4738 | if (STRINGP (visit)) |
e5176bae | 4739 | visit_file = Fexpand_file_name (visit, Qnil); |
4ad827c5 RS |
4740 | else |
4741 | visit_file = filename; | |
4742 | ||
7204a979 RS |
4743 | if (NILP (lockname)) |
4744 | lockname = visit_file; | |
4745 | ||
65b7d3e7 RS |
4746 | annotations = Qnil; |
4747 | ||
32f4334d RS |
4748 | /* If the file name has special constructs in it, |
4749 | call the corresponding file handler. */ | |
49307295 | 4750 | handler = Ffind_file_name_handler (filename, Qwrite_region); |
b56ad927 | 4751 | /* If FILENAME has no handler, see if VISIT has one. */ |
93c30b5f | 4752 | if (NILP (handler) && STRINGP (visit)) |
199607e4 | 4753 | handler = Ffind_file_name_handler (visit, Qwrite_region); |
3eac9910 | 4754 | |
32f4334d RS |
4755 | if (!NILP (handler)) |
4756 | { | |
32f4334d | 4757 | Lisp_Object val; |
51cf6d37 RS |
4758 | val = call6 (handler, Qwrite_region, start, end, |
4759 | filename, append, visit); | |
32f4334d | 4760 | |
d6a3cc15 | 4761 | if (visiting) |
32f4334d | 4762 | { |
95385625 | 4763 | SAVE_MODIFF = MODIFF; |
2acfd7ae | 4764 | XSETFASTINT (current_buffer->save_length, Z - BEG); |
3b7792ed | 4765 | current_buffer->filename = visit_file; |
32f4334d | 4766 | } |
09121adc | 4767 | UNGCPRO; |
32f4334d RS |
4768 | return val; |
4769 | } | |
4770 | ||
561cb8e1 RS |
4771 | /* Special kludge to simplify auto-saving. */ |
4772 | if (NILP (start)) | |
4773 | { | |
2acfd7ae KH |
4774 | XSETFASTINT (start, BEG); |
4775 | XSETFASTINT (end, Z); | |
561cb8e1 RS |
4776 | } |
4777 | ||
6fc6f94b RS |
4778 | record_unwind_protect (build_annotations_unwind, Fcurrent_buffer ()); |
4779 | count1 = specpdl_ptr - specpdl; | |
4780 | ||
4781 | given_buffer = current_buffer; | |
236a12f2 SM |
4782 | annotations = build_annotations (start, end); |
4783 | if (current_buffer != given_buffer) | |
4784 | { | |
4785 | XSETFASTINT (start, BEGV); | |
4786 | XSETFASTINT (end, ZV); | |
4787 | } | |
4788 | ||
4789 | UNGCPRO; | |
4790 | ||
4791 | GCPRO5 (start, filename, annotations, visit_file, lockname); | |
4792 | ||
59fac292 SM |
4793 | /* Decide the coding-system to encode the data with. |
4794 | We used to make this choice before calling build_annotations, but that | |
4795 | leads to problems when a write-annotate-function takes care of | |
4796 | unsavable chars (as was the case with X-Symbol). */ | |
4797 | choose_write_coding_system (start, end, filename, | |
4798 | append, visit, lockname, &coding); | |
4799 | Vlast_coding_system_used = coding.symbol; | |
4800 | ||
236a12f2 SM |
4801 | given_buffer = current_buffer; |
4802 | annotations = build_annotations_2 (start, end, | |
4803 | coding.pre_write_conversion, annotations); | |
6fc6f94b RS |
4804 | if (current_buffer != given_buffer) |
4805 | { | |
3cf29f61 RS |
4806 | XSETFASTINT (start, BEGV); |
4807 | XSETFASTINT (end, ZV); | |
6fc6f94b | 4808 | } |
d6a3cc15 | 4809 | |
570d7624 JB |
4810 | #ifdef CLASH_DETECTION |
4811 | if (!auto_saving) | |
84f6296a | 4812 | { |
a9171faa | 4813 | #if 0 /* This causes trouble for GNUS. */ |
84f6296a RS |
4814 | /* If we've locked this file for some other buffer, |
4815 | query before proceeding. */ | |
4816 | if (!visiting && EQ (Ffile_locked_p (lockname), Qt)) | |
bffd00b0 | 4817 | call2 (intern ("ask-user-about-lock"), filename, Vuser_login_name); |
a9171faa | 4818 | #endif |
84f6296a RS |
4819 | |
4820 | lock_file (lockname); | |
4821 | } | |
570d7624 JB |
4822 | #endif /* CLASH_DETECTION */ |
4823 | ||
b1d1b865 RS |
4824 | encoded_filename = ENCODE_FILE (filename); |
4825 | ||
4826 | fn = XSTRING (encoded_filename)->data; | |
570d7624 | 4827 | desc = -1; |
265a9e55 | 4828 | if (!NILP (append)) |
5e570b75 | 4829 | #ifdef DOS_NT |
68c45bf0 | 4830 | desc = emacs_open (fn, O_WRONLY | buffer_file_type, 0); |
5e570b75 | 4831 | #else /* not DOS_NT */ |
68c45bf0 | 4832 | desc = emacs_open (fn, O_WRONLY, 0); |
5e570b75 | 4833 | #endif /* not DOS_NT */ |
570d7624 | 4834 | |
b1d1b865 | 4835 | if (desc < 0 && (NILP (append) || errno == ENOENT)) |
570d7624 | 4836 | #ifdef VMS |
5e570b75 | 4837 | if (auto_saving) /* Overwrite any previous version of autosave file */ |
570d7624 | 4838 | { |
5e570b75 | 4839 | vms_truncate (fn); /* if fn exists, truncate to zero length */ |
68c45bf0 | 4840 | desc = emacs_open (fn, O_RDWR, 0); |
570d7624 | 4841 | if (desc < 0) |
561cb8e1 | 4842 | desc = creat_copy_attrs (STRINGP (current_buffer->filename) |
b72dea2a JB |
4843 | ? XSTRING (current_buffer->filename)->data : 0, |
4844 | fn); | |
570d7624 | 4845 | } |
5e570b75 | 4846 | else /* Write to temporary name and rename if no errors */ |
570d7624 JB |
4847 | { |
4848 | Lisp_Object temp_name; | |
4849 | temp_name = Ffile_name_directory (filename); | |
4850 | ||
265a9e55 | 4851 | if (!NILP (temp_name)) |
570d7624 JB |
4852 | { |
4853 | temp_name = Fmake_temp_name (concat2 (temp_name, | |
4854 | build_string ("$$SAVE$$"))); | |
4855 | fname = XSTRING (filename)->data; | |
4856 | fn = XSTRING (temp_name)->data; | |
4857 | desc = creat_copy_attrs (fname, fn); | |
4858 | if (desc < 0) | |
4859 | { | |
4860 | /* If we can't open the temporary file, try creating a new | |
4861 | version of the original file. VMS "creat" creates a | |
4862 | new version rather than truncating an existing file. */ | |
4863 | fn = fname; | |
4864 | fname = 0; | |
4865 | desc = creat (fn, 0666); | |
4866 | #if 0 /* This can clobber an existing file and fail to replace it, | |
4867 | if the user runs out of space. */ | |
4868 | if (desc < 0) | |
4869 | { | |
4870 | /* We can't make a new version; | |
4871 | try to truncate and rewrite existing version if any. */ | |
4872 | vms_truncate (fn); | |
68c45bf0 | 4873 | desc = emacs_open (fn, O_RDWR, 0); |
570d7624 JB |
4874 | } |
4875 | #endif | |
4876 | } | |
4877 | } | |
4878 | else | |
4879 | desc = creat (fn, 0666); | |
4880 | } | |
4881 | #else /* not VMS */ | |
5e570b75 | 4882 | #ifdef DOS_NT |
68c45bf0 | 4883 | desc = emacs_open (fn, |
95522746 GM |
4884 | O_WRONLY | O_CREAT | buffer_file_type |
4885 | | (EQ (mustbenew, Qexcl) ? O_EXCL : O_TRUNC), | |
68c45bf0 | 4886 | S_IREAD | S_IWRITE); |
5e570b75 | 4887 | #else /* not DOS_NT */ |
68c45bf0 | 4888 | desc = emacs_open (fn, O_WRONLY | O_TRUNC | O_CREAT |
7c752c80 | 4889 | | (EQ (mustbenew, Qexcl) ? O_EXCL : 0), |
68c45bf0 | 4890 | auto_saving ? auto_save_mode_bits : 0666); |
5e570b75 | 4891 | #endif /* not DOS_NT */ |
570d7624 JB |
4892 | #endif /* not VMS */ |
4893 | ||
4894 | if (desc < 0) | |
4895 | { | |
4896 | #ifdef CLASH_DETECTION | |
4897 | save_errno = errno; | |
7204a979 | 4898 | if (!auto_saving) unlock_file (lockname); |
570d7624 JB |
4899 | errno = save_errno; |
4900 | #endif /* CLASH_DETECTION */ | |
43fb7d9a | 4901 | UNGCPRO; |
570d7624 JB |
4902 | report_file_error ("Opening output file", Fcons (filename, Qnil)); |
4903 | } | |
4904 | ||
4905 | record_unwind_protect (close_file_unwind, make_number (desc)); | |
4906 | ||
c1c4693e | 4907 | if (!NILP (append) && !NILP (Ffile_regular_p (filename))) |
43fb7d9a DL |
4908 | { |
4909 | long ret; | |
4910 | ||
4911 | if (NUMBERP (append)) | |
4912 | ret = lseek (desc, XINT (append), 1); | |
4913 | else | |
4914 | ret = lseek (desc, 0, 2); | |
4915 | if (ret < 0) | |
4916 | { | |
570d7624 | 4917 | #ifdef CLASH_DETECTION |
43fb7d9a | 4918 | if (!auto_saving) unlock_file (lockname); |
570d7624 | 4919 | #endif /* CLASH_DETECTION */ |
43fb7d9a DL |
4920 | UNGCPRO; |
4921 | report_file_error ("Lseek error", Fcons (filename, Qnil)); | |
4922 | } | |
4923 | } | |
4924 | ||
4925 | UNGCPRO; | |
570d7624 JB |
4926 | |
4927 | #ifdef VMS | |
4928 | /* | |
4929 | * Kludge Warning: The VMS C RTL likes to insert carriage returns | |
4930 | * if we do writes that don't end with a carriage return. Furthermore | |
4931 | * it cannot handle writes of more then 16K. The modified | |
4932 | * version of "sys_write" in SYSDEP.C (see comment there) copes with | |
4933 | * this EXCEPT for the last record (iff it doesn't end with a carriage | |
4934 | * return). This implies that if your buffer doesn't end with a carriage | |
4935 | * return, you get one free... tough. However it also means that if | |
4936 | * we make two calls to sys_write (a la the following code) you can | |
4937 | * get one at the gap as well. The easiest way to fix this (honest) | |
4938 | * is to move the gap to the next newline (or the end of the buffer). | |
4939 | * Thus this change. | |
4940 | * | |
4941 | * Yech! | |
4942 | */ | |
4943 | if (GPT > BEG && GPT_ADDR[-1] != '\n') | |
4944 | move_gap (find_next_newline (GPT, 1)); | |
cdfb0f1d KH |
4945 | #else |
4946 | /* Whether VMS or not, we must move the gap to the next of newline | |
4947 | when we must put designation sequences at beginning of line. */ | |
4948 | if (INTEGERP (start) | |
4949 | && coding.type == coding_type_iso2022 | |
4950 | && coding.flags & CODING_FLAG_ISO_DESIGNATE_AT_BOL | |
4951 | && GPT > BEG && GPT_ADDR[-1] != '\n') | |
ec7adf26 RS |
4952 | { |
4953 | int opoint = PT, opoint_byte = PT_BYTE; | |
4954 | scan_newline (PT, PT_BYTE, ZV, ZV_BYTE, 1, 0); | |
4955 | move_gap_both (PT, PT_BYTE); | |
4956 | SET_PT_BOTH (opoint, opoint_byte); | |
4957 | } | |
570d7624 JB |
4958 | #endif |
4959 | ||
4960 | failure = 0; | |
4961 | immediate_quit = 1; | |
4962 | ||
561cb8e1 | 4963 | if (STRINGP (start)) |
570d7624 | 4964 | { |
ce51c54c KH |
4965 | failure = 0 > a_write (desc, start, 0, XSTRING (start)->size, |
4966 | &annotations, &coding); | |
570d7624 JB |
4967 | save_errno = errno; |
4968 | } | |
4969 | else if (XINT (start) != XINT (end)) | |
4970 | { | |
ec7adf26 RS |
4971 | tem = CHAR_TO_BYTE (XINT (start)); |
4972 | ||
570d7624 JB |
4973 | if (XINT (start) < GPT) |
4974 | { | |
ce51c54c KH |
4975 | failure = 0 > a_write (desc, Qnil, XINT (start), |
4976 | min (GPT, XINT (end)) - XINT (start), | |
4977 | &annotations, &coding); | |
570d7624 JB |
4978 | save_errno = errno; |
4979 | } | |
4980 | ||
4981 | if (XINT (end) > GPT && !failure) | |
4982 | { | |
ce51c54c KH |
4983 | tem = max (XINT (start), GPT); |
4984 | failure = 0 > a_write (desc, Qnil, tem , XINT (end) - tem, | |
4985 | &annotations, &coding); | |
d6a3cc15 RS |
4986 | save_errno = errno; |
4987 | } | |
69f6e679 RS |
4988 | } |
4989 | else | |
4990 | { | |
4991 | /* If file was empty, still need to write the annotations */ | |
c8a6d68a | 4992 | coding.mode |= CODING_MODE_LAST_BLOCK; |
ce51c54c | 4993 | failure = 0 > a_write (desc, Qnil, XINT (end), 0, &annotations, &coding); |
6fdaa9a0 KH |
4994 | save_errno = errno; |
4995 | } | |
4996 | ||
c8a6d68a KH |
4997 | if (CODING_REQUIRE_FLUSHING (&coding) |
4998 | && !(coding.mode & CODING_MODE_LAST_BLOCK) | |
1354debd | 4999 | && ! failure) |
6fdaa9a0 KH |
5000 | { |
5001 | /* We have to flush out a data. */ | |
c8a6d68a | 5002 | coding.mode |= CODING_MODE_LAST_BLOCK; |
ce51c54c | 5003 | failure = 0 > e_write (desc, Qnil, 0, 0, &coding); |
69f6e679 | 5004 | save_errno = errno; |
570d7624 JB |
5005 | } |
5006 | ||
5007 | immediate_quit = 0; | |
5008 | ||
6e23c83e | 5009 | #ifdef HAVE_FSYNC |
570d7624 JB |
5010 | /* Note fsync appears to change the modtime on BSD4.2 (both vax and sun). |
5011 | Disk full in NFS may be reported here. */ | |
1daffa1c RS |
5012 | /* mib says that closing the file will try to write as fast as NFS can do |
5013 | it, and that means the fsync here is not crucial for autosave files. */ | |
5014 | if (!auto_saving && fsync (desc) < 0) | |
cb33c142 KH |
5015 | { |
5016 | /* If fsync fails with EINTR, don't treat that as serious. */ | |
5017 | if (errno != EINTR) | |
5018 | failure = 1, save_errno = errno; | |
5019 | } | |
570d7624 JB |
5020 | #endif |
5021 | ||
199607e4 | 5022 | /* Spurious "file has changed on disk" warnings have been |
570d7624 JB |
5023 | observed on Suns as well. |
5024 | It seems that `close' can change the modtime, under nfs. | |
5025 | ||
5026 | (This has supposedly been fixed in Sunos 4, | |
5027 | but who knows about all the other machines with NFS?) */ | |
5028 | #if 0 | |
5029 | ||
5030 | /* On VMS and APOLLO, must do the stat after the close | |
5031 | since closing changes the modtime. */ | |
5032 | #ifndef VMS | |
5033 | #ifndef APOLLO | |
5034 | /* Recall that #if defined does not work on VMS. */ | |
5035 | #define FOO | |
5036 | fstat (desc, &st); | |
5037 | #endif | |
5038 | #endif | |
5039 | #endif | |
5040 | ||
5041 | /* NFS can report a write failure now. */ | |
68c45bf0 | 5042 | if (emacs_close (desc) < 0) |
570d7624 JB |
5043 | failure = 1, save_errno = errno; |
5044 | ||
5045 | #ifdef VMS | |
5046 | /* If we wrote to a temporary name and had no errors, rename to real name. */ | |
5047 | if (fname) | |
5048 | { | |
5049 | if (!failure) | |
5050 | failure = (rename (fn, fname) != 0), save_errno = errno; | |
5051 | fn = fname; | |
5052 | } | |
5053 | #endif /* VMS */ | |
5054 | ||
5055 | #ifndef FOO | |
5056 | stat (fn, &st); | |
5057 | #endif | |
6fc6f94b RS |
5058 | /* Discard the unwind protect for close_file_unwind. */ |
5059 | specpdl_ptr = specpdl + count1; | |
5060 | /* Restore the original current buffer. */ | |
98295b48 | 5061 | visit_file = unbind_to (count, visit_file); |
570d7624 JB |
5062 | |
5063 | #ifdef CLASH_DETECTION | |
5064 | if (!auto_saving) | |
7204a979 | 5065 | unlock_file (lockname); |
570d7624 JB |
5066 | #endif /* CLASH_DETECTION */ |
5067 | ||
5068 | /* Do this before reporting IO error | |
5069 | to avoid a "file has changed on disk" warning on | |
5070 | next attempt to save. */ | |
d6a3cc15 | 5071 | if (visiting) |
570d7624 JB |
5072 | current_buffer->modtime = st.st_mtime; |
5073 | ||
5074 | if (failure) | |
b1d1b865 | 5075 | error ("IO error writing %s: %s", XSTRING (filename)->data, |
68c45bf0 | 5076 | emacs_strerror (save_errno)); |
570d7624 | 5077 | |
d6a3cc15 | 5078 | if (visiting) |
570d7624 | 5079 | { |
95385625 | 5080 | SAVE_MODIFF = MODIFF; |
2acfd7ae | 5081 | XSETFASTINT (current_buffer->save_length, Z - BEG); |
3b7792ed | 5082 | current_buffer->filename = visit_file; |
f4226e89 | 5083 | update_mode_lines++; |
570d7624 | 5084 | } |
d6a3cc15 | 5085 | else if (quietly) |
570d7624 JB |
5086 | return Qnil; |
5087 | ||
5088 | if (!auto_saving) | |
60d67b83 | 5089 | message_with_string ("Wrote %s", visit_file, 1); |
570d7624 JB |
5090 | |
5091 | return Qnil; | |
5092 | } | |
ec7adf26 | 5093 | \f |
d6a3cc15 RS |
5094 | Lisp_Object merge (); |
5095 | ||
5096 | DEFUN ("car-less-than-car", Fcar_less_than_car, Scar_less_than_car, 2, 2, 0, | |
8c1a1077 PJ |
5097 | doc: /* Return t if (car A) is numerically less than (car B). */) |
5098 | (a, b) | |
d6a3cc15 RS |
5099 | Lisp_Object a, b; |
5100 | { | |
5101 | return Flss (Fcar (a), Fcar (b)); | |
5102 | } | |
5103 | ||
5104 | /* Build the complete list of annotations appropriate for writing out | |
5105 | the text between START and END, by calling all the functions in | |
6fc6f94b RS |
5106 | write-region-annotate-functions and merging the lists they return. |
5107 | If one of these functions switches to a different buffer, we assume | |
5108 | that buffer contains altered text. Therefore, the caller must | |
5109 | make sure to restore the current buffer in all cases, | |
5110 | as save-excursion would do. */ | |
d6a3cc15 RS |
5111 | |
5112 | static Lisp_Object | |
236a12f2 SM |
5113 | build_annotations (start, end) |
5114 | Lisp_Object start, end; | |
d6a3cc15 RS |
5115 | { |
5116 | Lisp_Object annotations; | |
5117 | Lisp_Object p, res; | |
5118 | struct gcpro gcpro1, gcpro2; | |
0a20b684 | 5119 | Lisp_Object original_buffer; |
532ed661 | 5120 | int i; |
0a20b684 RS |
5121 | |
5122 | XSETBUFFER (original_buffer, current_buffer); | |
d6a3cc15 RS |
5123 | |
5124 | annotations = Qnil; | |
5125 | p = Vwrite_region_annotate_functions; | |
5126 | GCPRO2 (annotations, p); | |
5127 | while (!NILP (p)) | |
5128 | { | |
6fc6f94b RS |
5129 | struct buffer *given_buffer = current_buffer; |
5130 | Vwrite_region_annotations_so_far = annotations; | |
d6a3cc15 | 5131 | res = call2 (Fcar (p), start, end); |
6fc6f94b RS |
5132 | /* If the function makes a different buffer current, |
5133 | assume that means this buffer contains altered text to be output. | |
5134 | Reset START and END from the buffer bounds | |
5135 | and discard all previous annotations because they should have | |
5136 | been dealt with by this function. */ | |
5137 | if (current_buffer != given_buffer) | |
5138 | { | |
3cf29f61 RS |
5139 | XSETFASTINT (start, BEGV); |
5140 | XSETFASTINT (end, ZV); | |
6fc6f94b RS |
5141 | annotations = Qnil; |
5142 | } | |
d6a3cc15 RS |
5143 | Flength (res); /* Check basic validity of return value */ |
5144 | annotations = merge (annotations, res, Qcar_less_than_car); | |
5145 | p = Fcdr (p); | |
5146 | } | |
0d420e88 BG |
5147 | |
5148 | /* Now do the same for annotation functions implied by the file-format */ | |
5149 | if (auto_saving && (!EQ (Vauto_save_file_format, Qt))) | |
5150 | p = Vauto_save_file_format; | |
5151 | else | |
5152 | p = current_buffer->file_format; | |
532ed661 | 5153 | for (i = 0; !NILP (p); p = Fcdr (p), ++i) |
0d420e88 BG |
5154 | { |
5155 | struct buffer *given_buffer = current_buffer; | |
532ed661 | 5156 | |
0d420e88 | 5157 | Vwrite_region_annotations_so_far = annotations; |
532ed661 GM |
5158 | |
5159 | /* Value is either a list of annotations or nil if the function | |
5160 | has written annotations to a temporary buffer, which is now | |
5161 | current. */ | |
5162 | res = call5 (Qformat_annotate_function, Fcar (p), start, end, | |
5163 | original_buffer, make_number (i)); | |
0d420e88 BG |
5164 | if (current_buffer != given_buffer) |
5165 | { | |
3cf29f61 RS |
5166 | XSETFASTINT (start, BEGV); |
5167 | XSETFASTINT (end, ZV); | |
0d420e88 BG |
5168 | annotations = Qnil; |
5169 | } | |
532ed661 GM |
5170 | |
5171 | if (CONSP (res)) | |
5172 | annotations = merge (annotations, res, Qcar_less_than_car); | |
0d420e88 | 5173 | } |
6fdaa9a0 | 5174 | |
236a12f2 SM |
5175 | UNGCPRO; |
5176 | return annotations; | |
5177 | } | |
5178 | ||
5179 | static Lisp_Object | |
5180 | build_annotations_2 (start, end, pre_write_conversion, annotations) | |
5181 | Lisp_Object start, end, pre_write_conversion, annotations; | |
5182 | { | |
5183 | struct gcpro gcpro1; | |
5184 | Lisp_Object res; | |
5185 | ||
5186 | GCPRO1 (annotations); | |
6fdaa9a0 KH |
5187 | /* At last, do the same for the function PRE_WRITE_CONVERSION |
5188 | implied by the current coding-system. */ | |
5189 | if (!NILP (pre_write_conversion)) | |
5190 | { | |
5191 | struct buffer *given_buffer = current_buffer; | |
5192 | Vwrite_region_annotations_so_far = annotations; | |
5193 | res = call2 (pre_write_conversion, start, end); | |
6fdaa9a0 | 5194 | Flength (res); |
cdfb0f1d KH |
5195 | annotations = (current_buffer != given_buffer |
5196 | ? res | |
5197 | : merge (annotations, res, Qcar_less_than_car)); | |
6fdaa9a0 KH |
5198 | } |
5199 | ||
d6a3cc15 RS |
5200 | UNGCPRO; |
5201 | return annotations; | |
5202 | } | |
ec7adf26 | 5203 | \f |
ce51c54c KH |
5204 | /* Write to descriptor DESC the NCHARS chars starting at POS of STRING. |
5205 | If STRING is nil, POS is the character position in the current buffer. | |
d6a3cc15 | 5206 | Intersperse with them the annotations from *ANNOT |
ce51c54c | 5207 | which fall within the range of POS to POS + NCHARS, |
d6a3cc15 RS |
5208 | each at its appropriate position. |
5209 | ||
ec7adf26 RS |
5210 | We modify *ANNOT by discarding elements as we use them up. |
5211 | ||
d6a3cc15 RS |
5212 | The return value is negative in case of system call failure. */ |
5213 | ||
ec7adf26 | 5214 | static int |
ce51c54c | 5215 | a_write (desc, string, pos, nchars, annot, coding) |
d6a3cc15 | 5216 | int desc; |
ce51c54c KH |
5217 | Lisp_Object string; |
5218 | register int nchars; | |
5219 | int pos; | |
d6a3cc15 | 5220 | Lisp_Object *annot; |
6fdaa9a0 | 5221 | struct coding_system *coding; |
d6a3cc15 RS |
5222 | { |
5223 | Lisp_Object tem; | |
5224 | int nextpos; | |
ce51c54c | 5225 | int lastpos = pos + nchars; |
d6a3cc15 | 5226 | |
eb15aa18 | 5227 | while (NILP (*annot) || CONSP (*annot)) |
d6a3cc15 RS |
5228 | { |
5229 | tem = Fcar_safe (Fcar (*annot)); | |
ce51c54c | 5230 | nextpos = pos - 1; |
ec7adf26 | 5231 | if (INTEGERP (tem)) |
ce51c54c | 5232 | nextpos = XFASTINT (tem); |
ec7adf26 RS |
5233 | |
5234 | /* If there are no more annotations in this range, | |
5235 | output the rest of the range all at once. */ | |
ce51c54c KH |
5236 | if (! (nextpos >= pos && nextpos <= lastpos)) |
5237 | return e_write (desc, string, pos, lastpos, coding); | |
ec7adf26 RS |
5238 | |
5239 | /* Output buffer text up to the next annotation's position. */ | |
ce51c54c | 5240 | if (nextpos > pos) |
d6a3cc15 | 5241 | { |
055a28c9 | 5242 | if (0 > e_write (desc, string, pos, nextpos, coding)) |
d6a3cc15 | 5243 | return -1; |
ce51c54c | 5244 | pos = nextpos; |
d6a3cc15 | 5245 | } |
ec7adf26 | 5246 | /* Output the annotation. */ |
d6a3cc15 RS |
5247 | tem = Fcdr (Fcar (*annot)); |
5248 | if (STRINGP (tem)) | |
5249 | { | |
055a28c9 | 5250 | if (0 > e_write (desc, tem, 0, XSTRING (tem)->size, coding)) |
d6a3cc15 RS |
5251 | return -1; |
5252 | } | |
5253 | *annot = Fcdr (*annot); | |
5254 | } | |
dfcf069d | 5255 | return 0; |
d6a3cc15 RS |
5256 | } |
5257 | ||
6fdaa9a0 KH |
5258 | #ifndef WRITE_BUF_SIZE |
5259 | #define WRITE_BUF_SIZE (16 * 1024) | |
5260 | #endif | |
5261 | ||
ce51c54c KH |
5262 | /* Write text in the range START and END into descriptor DESC, |
5263 | encoding them with coding system CODING. If STRING is nil, START | |
5264 | and END are character positions of the current buffer, else they | |
5265 | are indexes to the string STRING. */ | |
ec7adf26 RS |
5266 | |
5267 | static int | |
ce51c54c | 5268 | e_write (desc, string, start, end, coding) |
570d7624 | 5269 | int desc; |
ce51c54c KH |
5270 | Lisp_Object string; |
5271 | int start, end; | |
6fdaa9a0 | 5272 | struct coding_system *coding; |
570d7624 | 5273 | { |
ce51c54c KH |
5274 | register char *addr; |
5275 | register int nbytes; | |
6fdaa9a0 | 5276 | char buf[WRITE_BUF_SIZE]; |
ce51c54c KH |
5277 | int return_val = 0; |
5278 | ||
5279 | if (start >= end) | |
5280 | coding->composing = COMPOSITION_DISABLED; | |
5281 | if (coding->composing != COMPOSITION_DISABLED) | |
5282 | coding_save_composition (coding, start, end, string); | |
5283 | ||
5284 | if (STRINGP (string)) | |
5285 | { | |
5286 | addr = XSTRING (string)->data; | |
5287 | nbytes = STRING_BYTES (XSTRING (string)); | |
8c3b9441 | 5288 | coding->src_multibyte = STRING_MULTIBYTE (string); |
ce51c54c KH |
5289 | } |
5290 | else if (start < end) | |
5291 | { | |
5292 | /* It is assured that the gap is not in the range START and END-1. */ | |
5293 | addr = CHAR_POS_ADDR (start); | |
5294 | nbytes = CHAR_TO_BYTE (end) - CHAR_TO_BYTE (start); | |
8c3b9441 KH |
5295 | coding->src_multibyte |
5296 | = !NILP (current_buffer->enable_multibyte_characters); | |
ce51c54c KH |
5297 | } |
5298 | else | |
5299 | { | |
5300 | addr = ""; | |
5301 | nbytes = 0; | |
8c3b9441 | 5302 | coding->src_multibyte = 1; |
ce51c54c | 5303 | } |
570d7624 | 5304 | |
6fdaa9a0 KH |
5305 | /* We used to have a code for handling selective display here. But, |
5306 | now it is handled within encode_coding. */ | |
5307 | while (1) | |
570d7624 | 5308 | { |
b4132433 KH |
5309 | int result; |
5310 | ||
5311 | result = encode_coding (coding, addr, buf, nbytes, WRITE_BUF_SIZE); | |
c8a6d68a | 5312 | if (coding->produced > 0) |
6fdaa9a0 | 5313 | { |
68c45bf0 | 5314 | coding->produced -= emacs_write (desc, buf, coding->produced); |
ce51c54c KH |
5315 | if (coding->produced) |
5316 | { | |
5317 | return_val = -1; | |
5318 | break; | |
5319 | } | |
570d7624 | 5320 | } |
ca91fb26 KH |
5321 | nbytes -= coding->consumed; |
5322 | addr += coding->consumed; | |
5323 | if (result == CODING_FINISH_INSUFFICIENT_SRC | |
5324 | && nbytes > 0) | |
b4132433 KH |
5325 | { |
5326 | /* The source text ends by an incomplete multibyte form. | |
5327 | There's no way other than write it out as is. */ | |
68c45bf0 | 5328 | nbytes -= emacs_write (desc, addr, nbytes); |
ce51c54c KH |
5329 | if (nbytes) |
5330 | { | |
5331 | return_val = -1; | |
5332 | break; | |
5333 | } | |
b4132433 | 5334 | } |
ec7adf26 | 5335 | if (nbytes <= 0) |
6fdaa9a0 | 5336 | break; |
ce51c54c KH |
5337 | start += coding->consumed_char; |
5338 | if (coding->cmp_data) | |
5339 | coding_adjust_composition_offset (coding, start); | |
570d7624 | 5340 | } |
0c41a39c KH |
5341 | |
5342 | if (coding->cmp_data) | |
5343 | coding_free_composition_data (coding); | |
5344 | ||
055a28c9 | 5345 | return return_val; |
570d7624 | 5346 | } |
ec7adf26 | 5347 | \f |
570d7624 | 5348 | DEFUN ("verify-visited-file-modtime", Fverify_visited_file_modtime, |
8c1a1077 PJ |
5349 | Sverify_visited_file_modtime, 1, 1, 0, |
5350 | doc: /* Return t if last mod time of BUF's visited file matches what BUF records. | |
5351 | This means that the file has not been changed since it was visited or saved. */) | |
5352 | (buf) | |
570d7624 JB |
5353 | Lisp_Object buf; |
5354 | { | |
5355 | struct buffer *b; | |
5356 | struct stat st; | |
32f4334d | 5357 | Lisp_Object handler; |
b1d1b865 | 5358 | Lisp_Object filename; |
570d7624 | 5359 | |
b7826503 | 5360 | CHECK_BUFFER (buf); |
570d7624 JB |
5361 | b = XBUFFER (buf); |
5362 | ||
93c30b5f | 5363 | if (!STRINGP (b->filename)) return Qt; |
570d7624 JB |
5364 | if (b->modtime == 0) return Qt; |
5365 | ||
32f4334d RS |
5366 | /* If the file name has special constructs in it, |
5367 | call the corresponding file handler. */ | |
49307295 KH |
5368 | handler = Ffind_file_name_handler (b->filename, |
5369 | Qverify_visited_file_modtime); | |
32f4334d | 5370 | if (!NILP (handler)) |
09121adc | 5371 | return call2 (handler, Qverify_visited_file_modtime, buf); |
32f4334d | 5372 | |
b1d1b865 RS |
5373 | filename = ENCODE_FILE (b->filename); |
5374 | ||
5375 | if (stat (XSTRING (filename)->data, &st) < 0) | |
570d7624 JB |
5376 | { |
5377 | /* If the file doesn't exist now and didn't exist before, | |
5378 | we say that it isn't modified, provided the error is a tame one. */ | |
5379 | if (errno == ENOENT || errno == EACCES || errno == ENOTDIR) | |
5380 | st.st_mtime = -1; | |
5381 | else | |
5382 | st.st_mtime = 0; | |
5383 | } | |
5384 | if (st.st_mtime == b->modtime | |
5385 | /* If both are positive, accept them if they are off by one second. */ | |
5386 | || (st.st_mtime > 0 && b->modtime > 0 | |
5387 | && (st.st_mtime == b->modtime + 1 | |
5388 | || st.st_mtime == b->modtime - 1))) | |
5389 | return Qt; | |
5390 | return Qnil; | |
5391 | } | |
5392 | ||
5393 | DEFUN ("clear-visited-file-modtime", Fclear_visited_file_modtime, | |
8c1a1077 PJ |
5394 | Sclear_visited_file_modtime, 0, 0, 0, |
5395 | doc: /* Clear out records of last mod time of visited file. | |
5396 | Next attempt to save will certainly not complain of a discrepancy. */) | |
5397 | () | |
570d7624 JB |
5398 | { |
5399 | current_buffer->modtime = 0; | |
5400 | return Qnil; | |
5401 | } | |
5402 | ||
f5d5eccf | 5403 | DEFUN ("visited-file-modtime", Fvisited_file_modtime, |
8c1a1077 PJ |
5404 | Svisited_file_modtime, 0, 0, 0, |
5405 | doc: /* Return the current buffer's recorded visited file modification time. | |
5406 | The value is a list of the form (HIGH . LOW), like the time values | |
5407 | that `file-attributes' returns. */) | |
5408 | () | |
f5d5eccf | 5409 | { |
b50536bb | 5410 | return long_to_cons ((unsigned long) current_buffer->modtime); |
f5d5eccf RS |
5411 | } |
5412 | ||
570d7624 | 5413 | DEFUN ("set-visited-file-modtime", Fset_visited_file_modtime, |
8c1a1077 PJ |
5414 | Sset_visited_file_modtime, 0, 1, 0, |
5415 | doc: /* Update buffer's recorded modification time from the visited file's time. | |
5416 | Useful if the buffer was not read from the file normally | |
5417 | or if the file itself has been changed for some known benign reason. | |
5418 | An argument specifies the modification time value to use | |
5419 | \(instead of that of the visited file), in the form of a list | |
5420 | \(HIGH . LOW) or (HIGH LOW). */) | |
5421 | (time_list) | |
f5d5eccf | 5422 | Lisp_Object time_list; |
570d7624 | 5423 | { |
f5d5eccf RS |
5424 | if (!NILP (time_list)) |
5425 | current_buffer->modtime = cons_to_long (time_list); | |
5426 | else | |
5427 | { | |
5428 | register Lisp_Object filename; | |
5429 | struct stat st; | |
5430 | Lisp_Object handler; | |
570d7624 | 5431 | |
f5d5eccf | 5432 | filename = Fexpand_file_name (current_buffer->filename, Qnil); |
32f4334d | 5433 | |
f5d5eccf RS |
5434 | /* If the file name has special constructs in it, |
5435 | call the corresponding file handler. */ | |
49307295 | 5436 | handler = Ffind_file_name_handler (filename, Qset_visited_file_modtime); |
f5d5eccf | 5437 | if (!NILP (handler)) |
caf3c431 | 5438 | /* The handler can find the file name the same way we did. */ |
76c881b0 | 5439 | return call2 (handler, Qset_visited_file_modtime, Qnil); |
b1d1b865 RS |
5440 | |
5441 | filename = ENCODE_FILE (filename); | |
5442 | ||
5443 | if (stat (XSTRING (filename)->data, &st) >= 0) | |
f5d5eccf RS |
5444 | current_buffer->modtime = st.st_mtime; |
5445 | } | |
570d7624 JB |
5446 | |
5447 | return Qnil; | |
5448 | } | |
5449 | \f | |
5450 | Lisp_Object | |
d7f31e22 GM |
5451 | auto_save_error (error) |
5452 | Lisp_Object error; | |
570d7624 | 5453 | { |
d7f31e22 GM |
5454 | Lisp_Object args[3], msg; |
5455 | int i, nbytes; | |
5456 | struct gcpro gcpro1; | |
5457 | ||
570d7624 | 5458 | ring_bell (); |
d7f31e22 GM |
5459 | |
5460 | args[0] = build_string ("Auto-saving %s: %s"); | |
5461 | args[1] = current_buffer->name; | |
5462 | args[2] = Ferror_message_string (error); | |
5463 | msg = Fformat (3, args); | |
5464 | GCPRO1 (msg); | |
5465 | nbytes = STRING_BYTES (XSTRING (msg)); | |
5466 | ||
5467 | for (i = 0; i < 3; ++i) | |
5468 | { | |
5469 | if (i == 0) | |
5470 | message2 (XSTRING (msg)->data, nbytes, STRING_MULTIBYTE (msg)); | |
5471 | else | |
5472 | message2_nolog (XSTRING (msg)->data, nbytes, STRING_MULTIBYTE (msg)); | |
5473 | Fsleep_for (make_number (1), Qnil); | |
5474 | } | |
5475 | ||
5476 | UNGCPRO; | |
570d7624 JB |
5477 | return Qnil; |
5478 | } | |
5479 | ||
5480 | Lisp_Object | |
5481 | auto_save_1 () | |
5482 | { | |
570d7624 JB |
5483 | struct stat st; |
5484 | ||
5485 | /* Get visited file's mode to become the auto save file's mode. */ | |
8801a864 KR |
5486 | if (! NILP (current_buffer->filename) |
5487 | && stat (XSTRING (current_buffer->filename)->data, &st) >= 0) | |
570d7624 JB |
5488 | /* But make sure we can overwrite it later! */ |
5489 | auto_save_mode_bits = st.st_mode | 0600; | |
5490 | else | |
5491 | auto_save_mode_bits = 0666; | |
5492 | ||
5493 | return | |
5494 | Fwrite_region (Qnil, Qnil, | |
5495 | current_buffer->auto_save_file_name, | |
de1d0127 | 5496 | Qnil, Qlambda, Qnil, Qnil); |
570d7624 JB |
5497 | } |
5498 | ||
e54d3b5d | 5499 | static Lisp_Object |
1b335d29 RS |
5500 | do_auto_save_unwind (stream) /* used as unwind-protect function */ |
5501 | Lisp_Object stream; | |
e54d3b5d | 5502 | { |
3be3c08e | 5503 | auto_saving = 0; |
1b335d29 | 5504 | if (!NILP (stream)) |
03699b14 KR |
5505 | fclose ((FILE *) (XFASTINT (XCAR (stream)) << 16 |
5506 | | XFASTINT (XCDR (stream)))); | |
38119822 | 5507 | pop_message (); |
e54d3b5d RS |
5508 | return Qnil; |
5509 | } | |
5510 | ||
a8c828be RS |
5511 | static Lisp_Object |
5512 | do_auto_save_unwind_1 (value) /* used as unwind-protect function */ | |
5513 | Lisp_Object value; | |
5514 | { | |
5515 | minibuffer_auto_raise = XINT (value); | |
5516 | return Qnil; | |
5517 | } | |
5518 | ||
570d7624 | 5519 | DEFUN ("do-auto-save", Fdo_auto_save, Sdo_auto_save, 0, 2, "", |
8c1a1077 PJ |
5520 | doc: /* Auto-save all buffers that need it. |
5521 | This is all buffers that have auto-saving enabled | |
5522 | and are changed since last auto-saved. | |
5523 | Auto-saving writes the buffer into a file | |
5524 | so that your editing is not lost if the system crashes. | |
5525 | This file is not the file you visited; that changes only when you save. | |
5526 | Normally we run the normal hook `auto-save-hook' before saving. | |
5527 | ||
5528 | A non-nil NO-MESSAGE argument means do not print any message if successful. | |
5529 | A non-nil CURRENT-ONLY argument means save only current buffer. */) | |
5530 | (no_message, current_only) | |
17857782 | 5531 | Lisp_Object no_message, current_only; |
570d7624 JB |
5532 | { |
5533 | struct buffer *old = current_buffer, *b; | |
5534 | Lisp_Object tail, buf; | |
5535 | int auto_saved = 0; | |
f14b1c68 | 5536 | int do_handled_files; |
ff4c9993 | 5537 | Lisp_Object oquit; |
1b335d29 RS |
5538 | FILE *stream; |
5539 | Lisp_Object lispstream; | |
e54d3b5d | 5540 | int count = specpdl_ptr - specpdl; |
a8c828be | 5541 | int orig_minibuffer_auto_raise = minibuffer_auto_raise; |
c71106e5 | 5542 | int message_p = push_message (); |
9c856db9 | 5543 | |
ff4c9993 RS |
5544 | /* Ordinarily don't quit within this function, |
5545 | but don't make it impossible to quit (in case we get hung in I/O). */ | |
5546 | oquit = Vquit_flag; | |
5547 | Vquit_flag = Qnil; | |
570d7624 JB |
5548 | |
5549 | /* No GCPRO needed, because (when it matters) all Lisp_Object variables | |
5550 | point to non-strings reached from Vbuffer_alist. */ | |
5551 | ||
570d7624 | 5552 | if (minibuf_level) |
17857782 | 5553 | no_message = Qt; |
570d7624 | 5554 | |
265a9e55 | 5555 | if (!NILP (Vrun_hooks)) |
570d7624 JB |
5556 | call1 (Vrun_hooks, intern ("auto-save-hook")); |
5557 | ||
e54d3b5d RS |
5558 | if (STRINGP (Vauto_save_list_file_name)) |
5559 | { | |
0894672f | 5560 | Lisp_Object listfile; |
b272d624 | 5561 | |
258fd2cb | 5562 | listfile = Fexpand_file_name (Vauto_save_list_file_name, Qnil); |
0894672f GM |
5563 | |
5564 | /* Don't try to create the directory when shutting down Emacs, | |
5565 | because creating the directory might signal an error, and | |
5566 | that would leave Emacs in a strange state. */ | |
5567 | if (!NILP (Vrun_hooks)) | |
5568 | { | |
5569 | Lisp_Object dir; | |
5570 | dir = Ffile_name_directory (listfile); | |
5571 | if (NILP (Ffile_directory_p (dir))) | |
5572 | call2 (Qmake_directory, dir, Qt); | |
5573 | } | |
b272d624 | 5574 | |
1b335d29 | 5575 | stream = fopen (XSTRING (listfile)->data, "w"); |
0eff1f85 RS |
5576 | if (stream != NULL) |
5577 | { | |
5578 | /* Arrange to close that file whether or not we get an error. | |
5579 | Also reset auto_saving to 0. */ | |
5580 | lispstream = Fcons (Qnil, Qnil); | |
f3fbd155 KR |
5581 | XSETCARFASTINT (lispstream, (EMACS_UINT)stream >> 16); |
5582 | XSETCDRFASTINT (lispstream, (EMACS_UINT)stream & 0xffff); | |
0eff1f85 RS |
5583 | } |
5584 | else | |
5585 | lispstream = Qnil; | |
e54d3b5d RS |
5586 | } |
5587 | else | |
1b335d29 RS |
5588 | { |
5589 | stream = NULL; | |
5590 | lispstream = Qnil; | |
5591 | } | |
199607e4 | 5592 | |
1b335d29 | 5593 | record_unwind_protect (do_auto_save_unwind, lispstream); |
a8c828be RS |
5594 | record_unwind_protect (do_auto_save_unwind_1, |
5595 | make_number (minibuffer_auto_raise)); | |
5596 | minibuffer_auto_raise = 0; | |
3be3c08e RS |
5597 | auto_saving = 1; |
5598 | ||
f14b1c68 JB |
5599 | /* First, save all files which don't have handlers. If Emacs is |
5600 | crashing, the handlers may tweak what is causing Emacs to crash | |
5601 | in the first place, and it would be a shame if Emacs failed to | |
5602 | autosave perfectly ordinary files because it couldn't handle some | |
5603 | ange-ftp'd file. */ | |
5604 | for (do_handled_files = 0; do_handled_files < 2; do_handled_files++) | |
03699b14 | 5605 | for (tail = Vbuffer_alist; GC_CONSP (tail); tail = XCDR (tail)) |
f14b1c68 | 5606 | { |
03699b14 | 5607 | buf = XCDR (XCAR (tail)); |
f14b1c68 | 5608 | b = XBUFFER (buf); |
199607e4 | 5609 | |
e54d3b5d | 5610 | /* Record all the buffers that have auto save mode |
258fd2cb RS |
5611 | in the special file that lists them. For each of these buffers, |
5612 | Record visited name (if any) and auto save name. */ | |
93c30b5f | 5613 | if (STRINGP (b->auto_save_file_name) |
1b335d29 | 5614 | && stream != NULL && do_handled_files == 0) |
e54d3b5d | 5615 | { |
258fd2cb RS |
5616 | if (!NILP (b->filename)) |
5617 | { | |
1b335d29 | 5618 | fwrite (XSTRING (b->filename)->data, 1, |
fc932ac6 | 5619 | STRING_BYTES (XSTRING (b->filename)), stream); |
258fd2cb | 5620 | } |
1b335d29 RS |
5621 | putc ('\n', stream); |
5622 | fwrite (XSTRING (b->auto_save_file_name)->data, 1, | |
fc932ac6 | 5623 | STRING_BYTES (XSTRING (b->auto_save_file_name)), stream); |
1b335d29 | 5624 | putc ('\n', stream); |
e54d3b5d | 5625 | } |
17857782 | 5626 | |
f14b1c68 JB |
5627 | if (!NILP (current_only) |
5628 | && b != current_buffer) | |
5629 | continue; | |
e54d3b5d | 5630 | |
95385625 RS |
5631 | /* Don't auto-save indirect buffers. |
5632 | The base buffer takes care of it. */ | |
5633 | if (b->base_buffer) | |
5634 | continue; | |
5635 | ||
f14b1c68 JB |
5636 | /* Check for auto save enabled |
5637 | and file changed since last auto save | |
5638 | and file changed since last real save. */ | |
93c30b5f | 5639 | if (STRINGP (b->auto_save_file_name) |
95385625 | 5640 | && BUF_SAVE_MODIFF (b) < BUF_MODIFF (b) |
f14b1c68 | 5641 | && b->auto_save_modified < BUF_MODIFF (b) |
82c2d839 RS |
5642 | /* -1 means we've turned off autosaving for a while--see below. */ |
5643 | && XINT (b->save_length) >= 0 | |
f14b1c68 | 5644 | && (do_handled_files |
49307295 KH |
5645 | || NILP (Ffind_file_name_handler (b->auto_save_file_name, |
5646 | Qwrite_region)))) | |
f14b1c68 | 5647 | { |
b60247d9 RS |
5648 | EMACS_TIME before_time, after_time; |
5649 | ||
5650 | EMACS_GET_TIME (before_time); | |
5651 | ||
5652 | /* If we had a failure, don't try again for 20 minutes. */ | |
5653 | if (b->auto_save_failure_time >= 0 | |
5654 | && EMACS_SECS (before_time) - b->auto_save_failure_time < 1200) | |
5655 | continue; | |
5656 | ||
f14b1c68 JB |
5657 | if ((XFASTINT (b->save_length) * 10 |
5658 | > (BUF_Z (b) - BUF_BEG (b)) * 13) | |
5659 | /* A short file is likely to change a large fraction; | |
5660 | spare the user annoying messages. */ | |
5661 | && XFASTINT (b->save_length) > 5000 | |
5662 | /* These messages are frequent and annoying for `*mail*'. */ | |
5663 | && !EQ (b->filename, Qnil) | |
5664 | && NILP (no_message)) | |
5665 | { | |
5666 | /* It has shrunk too much; turn off auto-saving here. */ | |
a8c828be | 5667 | minibuffer_auto_raise = orig_minibuffer_auto_raise; |
60d67b83 RS |
5668 | message_with_string ("Buffer %s has shrunk a lot; auto save turned off there", |
5669 | b->name, 1); | |
a8c828be | 5670 | minibuffer_auto_raise = 0; |
82c2d839 RS |
5671 | /* Turn off auto-saving until there's a real save, |
5672 | and prevent any more warnings. */ | |
46283abe | 5673 | XSETINT (b->save_length, -1); |
f14b1c68 JB |
5674 | Fsleep_for (make_number (1), Qnil); |
5675 | continue; | |
5676 | } | |
5677 | set_buffer_internal (b); | |
5678 | if (!auto_saved && NILP (no_message)) | |
5679 | message1 ("Auto-saving..."); | |
5680 | internal_condition_case (auto_save_1, Qt, auto_save_error); | |
5681 | auto_saved++; | |
5682 | b->auto_save_modified = BUF_MODIFF (b); | |
2acfd7ae | 5683 | XSETFASTINT (current_buffer->save_length, Z - BEG); |
f14b1c68 | 5684 | set_buffer_internal (old); |
b60247d9 RS |
5685 | |
5686 | EMACS_GET_TIME (after_time); | |
5687 | ||
5688 | /* If auto-save took more than 60 seconds, | |
5689 | assume it was an NFS failure that got a timeout. */ | |
5690 | if (EMACS_SECS (after_time) - EMACS_SECS (before_time) > 60) | |
5691 | b->auto_save_failure_time = EMACS_SECS (after_time); | |
f14b1c68 JB |
5692 | } |
5693 | } | |
570d7624 | 5694 | |
b67f2ca5 RS |
5695 | /* Prevent another auto save till enough input events come in. */ |
5696 | record_auto_save (); | |
570d7624 | 5697 | |
17857782 | 5698 | if (auto_saved && NILP (no_message)) |
f05b275b | 5699 | { |
c71106e5 | 5700 | if (message_p) |
31f3d831 | 5701 | { |
22e59fa7 | 5702 | sit_for (1, 0, 0, 0, 0); |
c71106e5 | 5703 | restore_message (); |
31f3d831 | 5704 | } |
f05b275b KH |
5705 | else |
5706 | message1 ("Auto-saving...done"); | |
5707 | } | |
570d7624 | 5708 | |
ff4c9993 RS |
5709 | Vquit_flag = oquit; |
5710 | ||
e54d3b5d | 5711 | unbind_to (count, Qnil); |
570d7624 JB |
5712 | return Qnil; |
5713 | } | |
5714 | ||
5715 | DEFUN ("set-buffer-auto-saved", Fset_buffer_auto_saved, | |
8c1a1077 PJ |
5716 | Sset_buffer_auto_saved, 0, 0, 0, |
5717 | doc: /* Mark current buffer as auto-saved with its current text. | |
5718 | No auto-save file will be written until the buffer changes again. */) | |
5719 | () | |
570d7624 JB |
5720 | { |
5721 | current_buffer->auto_save_modified = MODIFF; | |
2acfd7ae | 5722 | XSETFASTINT (current_buffer->save_length, Z - BEG); |
b60247d9 RS |
5723 | current_buffer->auto_save_failure_time = -1; |
5724 | return Qnil; | |
5725 | } | |
5726 | ||
5727 | DEFUN ("clear-buffer-auto-save-failure", Fclear_buffer_auto_save_failure, | |
8c1a1077 PJ |
5728 | Sclear_buffer_auto_save_failure, 0, 0, 0, |
5729 | doc: /* Clear any record of a recent auto-save failure in the current buffer. */) | |
5730 | () | |
b60247d9 RS |
5731 | { |
5732 | current_buffer->auto_save_failure_time = -1; | |
570d7624 JB |
5733 | return Qnil; |
5734 | } | |
5735 | ||
5736 | DEFUN ("recent-auto-save-p", Frecent_auto_save_p, Srecent_auto_save_p, | |
8c1a1077 PJ |
5737 | 0, 0, 0, |
5738 | doc: /* Return t if buffer has been auto-saved since last read in or saved. */) | |
5739 | () | |
570d7624 | 5740 | { |
95385625 | 5741 | return (SAVE_MODIFF < current_buffer->auto_save_modified) ? Qt : Qnil; |
570d7624 JB |
5742 | } |
5743 | \f | |
5744 | /* Reading and completing file names */ | |
5745 | extern Lisp_Object Ffile_name_completion (), Ffile_name_all_completions (); | |
5746 | ||
6e710ae5 RS |
5747 | /* In the string VAL, change each $ to $$ and return the result. */ |
5748 | ||
5749 | static Lisp_Object | |
5750 | double_dollars (val) | |
5751 | Lisp_Object val; | |
5752 | { | |
5753 | register unsigned char *old, *new; | |
5754 | register int n; | |
5755 | int osize, count; | |
5756 | ||
fc932ac6 | 5757 | osize = STRING_BYTES (XSTRING (val)); |
60d67b83 RS |
5758 | |
5759 | /* Count the number of $ characters. */ | |
6e710ae5 RS |
5760 | for (n = osize, count = 0, old = XSTRING (val)->data; n > 0; n--) |
5761 | if (*old++ == '$') count++; | |
5762 | if (count > 0) | |
5763 | { | |
5764 | old = XSTRING (val)->data; | |
60d67b83 RS |
5765 | val = make_uninit_multibyte_string (XSTRING (val)->size + count, |
5766 | osize + count); | |
6e710ae5 RS |
5767 | new = XSTRING (val)->data; |
5768 | for (n = osize; n > 0; n--) | |
5769 | if (*old != '$') | |
5770 | *new++ = *old++; | |
5771 | else | |
5772 | { | |
5773 | *new++ = '$'; | |
5774 | *new++ = '$'; | |
5775 | old++; | |
5776 | } | |
5777 | } | |
5778 | return val; | |
5779 | } | |
5780 | ||
570d7624 | 5781 | DEFUN ("read-file-name-internal", Fread_file_name_internal, Sread_file_name_internal, |
8c1a1077 PJ |
5782 | 3, 3, 0, |
5783 | doc: /* Internal subroutine for read-file-name. Do not call this. */) | |
5784 | (string, dir, action) | |
570d7624 JB |
5785 | Lisp_Object string, dir, action; |
5786 | /* action is nil for complete, t for return list of completions, | |
5787 | lambda for verify final value */ | |
5788 | { | |
5789 | Lisp_Object name, specdir, realdir, val, orig_string; | |
09121adc | 5790 | int changed; |
8ce069f5 | 5791 | struct gcpro gcpro1, gcpro2, gcpro3, gcpro4, gcpro5; |
09121adc | 5792 | |
b7826503 | 5793 | CHECK_STRING (string); |
58cc3710 | 5794 | |
09121adc RS |
5795 | realdir = dir; |
5796 | name = string; | |
5797 | orig_string = Qnil; | |
5798 | specdir = Qnil; | |
5799 | changed = 0; | |
5800 | /* No need to protect ACTION--we only compare it with t and nil. */ | |
8ce069f5 | 5801 | GCPRO5 (string, realdir, name, specdir, orig_string); |
570d7624 JB |
5802 | |
5803 | if (XSTRING (string)->size == 0) | |
5804 | { | |
570d7624 | 5805 | if (EQ (action, Qlambda)) |
09121adc RS |
5806 | { |
5807 | UNGCPRO; | |
5808 | return Qnil; | |
5809 | } | |
570d7624 JB |
5810 | } |
5811 | else | |
5812 | { | |
5813 | orig_string = string; | |
5814 | string = Fsubstitute_in_file_name (string); | |
09121adc | 5815 | changed = NILP (Fstring_equal (string, orig_string)); |
570d7624 | 5816 | name = Ffile_name_nondirectory (string); |
09121adc RS |
5817 | val = Ffile_name_directory (string); |
5818 | if (! NILP (val)) | |
5819 | realdir = Fexpand_file_name (val, realdir); | |
570d7624 JB |
5820 | } |
5821 | ||
265a9e55 | 5822 | if (NILP (action)) |
570d7624 JB |
5823 | { |
5824 | specdir = Ffile_name_directory (string); | |
5825 | val = Ffile_name_completion (name, realdir); | |
09121adc | 5826 | UNGCPRO; |
93c30b5f | 5827 | if (!STRINGP (val)) |
570d7624 | 5828 | { |
09121adc | 5829 | if (changed) |
dbd04e01 | 5830 | return double_dollars (string); |
09121adc | 5831 | return val; |
570d7624 JB |
5832 | } |
5833 | ||
265a9e55 | 5834 | if (!NILP (specdir)) |
570d7624 JB |
5835 | val = concat2 (specdir, val); |
5836 | #ifndef VMS | |
6e710ae5 RS |
5837 | return double_dollars (val); |
5838 | #else /* not VMS */ | |
09121adc | 5839 | return val; |
6e710ae5 | 5840 | #endif /* not VMS */ |
570d7624 | 5841 | } |
09121adc | 5842 | UNGCPRO; |
570d7624 JB |
5843 | |
5844 | if (EQ (action, Qt)) | |
5845 | return Ffile_name_all_completions (name, realdir); | |
5846 | /* Only other case actually used is ACTION = lambda */ | |
5847 | #ifdef VMS | |
5848 | /* Supposedly this helps commands such as `cd' that read directory names, | |
5849 | but can someone explain how it helps them? -- RMS */ | |
5850 | if (XSTRING (name)->size == 0) | |
5851 | return Qt; | |
5852 | #endif /* VMS */ | |
5853 | return Ffile_exists_p (string); | |
5854 | } | |
5855 | ||
5856 | DEFUN ("read-file-name", Fread_file_name, Sread_file_name, 1, 5, 0, | |
8c1a1077 PJ |
5857 | doc: /* Read file name, prompting with PROMPT and completing in directory DIR. |
5858 | Value is not expanded---you must call `expand-file-name' yourself. | |
5859 | Default name to DEFAULT-FILENAME if user enters a null string. | |
5860 | (If DEFAULT-FILENAME is omitted, the visited file name is used, | |
5861 | except that if INITIAL is specified, that combined with DIR is used.) | |
5862 | Fourth arg MUSTMATCH non-nil means require existing file's name. | |
5863 | Non-nil and non-t means also require confirmation after completion. | |
5864 | Fifth arg INITIAL specifies text to start with. | |
5865 | DIR defaults to current buffer's directory default. | |
5866 | ||
5867 | If this command was invoked with the mouse, use a file dialog box if | |
5868 | `use-dialog-box' is non-nil, and the window system or X toolkit in use | |
5869 | provides a file dialog box. */) | |
5870 | (prompt, dir, default_filename, mustmatch, initial) | |
3b7f6e60 | 5871 | Lisp_Object prompt, dir, default_filename, mustmatch, initial; |
570d7624 | 5872 | { |
8d6d9fef | 5873 | Lisp_Object val, insdef, tem; |
570d7624 JB |
5874 | struct gcpro gcpro1, gcpro2; |
5875 | register char *homedir; | |
62f555a5 RS |
5876 | int replace_in_history = 0; |
5877 | int add_to_history = 0; | |
570d7624 JB |
5878 | int count; |
5879 | ||
265a9e55 | 5880 | if (NILP (dir)) |
570d7624 | 5881 | dir = current_buffer->directory; |
3b7f6e60 | 5882 | if (NILP (default_filename)) |
3beeedfe RS |
5883 | { |
5884 | if (! NILP (initial)) | |
3b7f6e60 | 5885 | default_filename = Fexpand_file_name (initial, dir); |
3beeedfe | 5886 | else |
3b7f6e60 | 5887 | default_filename = current_buffer->filename; |
3beeedfe | 5888 | } |
570d7624 JB |
5889 | |
5890 | /* If dir starts with user's homedir, change that to ~. */ | |
5891 | homedir = (char *) egetenv ("HOME"); | |
199607e4 | 5892 | #ifdef DOS_NT |
417c884a EZ |
5893 | /* homedir can be NULL in temacs, since Vprocess_environment is not |
5894 | yet set up. We shouldn't crash in that case. */ | |
5895 | if (homedir != 0) | |
5896 | { | |
5897 | homedir = strcpy (alloca (strlen (homedir) + 1), homedir); | |
5898 | CORRECT_DIR_SEPS (homedir); | |
5899 | } | |
199607e4 | 5900 | #endif |
570d7624 | 5901 | if (homedir != 0 |
93c30b5f | 5902 | && STRINGP (dir) |
570d7624 | 5903 | && !strncmp (homedir, XSTRING (dir)->data, strlen (homedir)) |
5e570b75 | 5904 | && IS_DIRECTORY_SEP (XSTRING (dir)->data[strlen (homedir)])) |
570d7624 JB |
5905 | { |
5906 | dir = make_string (XSTRING (dir)->data + strlen (homedir) - 1, | |
fc932ac6 | 5907 | STRING_BYTES (XSTRING (dir)) - strlen (homedir) + 1); |
570d7624 JB |
5908 | XSTRING (dir)->data[0] = '~'; |
5909 | } | |
8d6d9fef AS |
5910 | /* Likewise for default_filename. */ |
5911 | if (homedir != 0 | |
5912 | && STRINGP (default_filename) | |
5913 | && !strncmp (homedir, XSTRING (default_filename)->data, strlen (homedir)) | |
5914 | && IS_DIRECTORY_SEP (XSTRING (default_filename)->data[strlen (homedir)])) | |
5915 | { | |
5916 | default_filename | |
5917 | = make_string (XSTRING (default_filename)->data + strlen (homedir) - 1, | |
5918 | STRING_BYTES (XSTRING (default_filename)) - strlen (homedir) + 1); | |
5919 | XSTRING (default_filename)->data[0] = '~'; | |
5920 | } | |
5921 | if (!NILP (default_filename)) | |
b537a6c7 | 5922 | { |
b7826503 | 5923 | CHECK_STRING (default_filename); |
b537a6c7 RS |
5924 | default_filename = double_dollars (default_filename); |
5925 | } | |
570d7624 | 5926 | |
58cc3710 | 5927 | if (insert_default_directory && STRINGP (dir)) |
570d7624 JB |
5928 | { |
5929 | insdef = dir; | |
265a9e55 | 5930 | if (!NILP (initial)) |
570d7624 | 5931 | { |
15c65264 | 5932 | Lisp_Object args[2], pos; |
570d7624 JB |
5933 | |
5934 | args[0] = insdef; | |
5935 | args[1] = initial; | |
5936 | insdef = Fconcat (2, args); | |
351bd676 | 5937 | pos = make_number (XSTRING (double_dollars (dir))->size); |
8d6d9fef | 5938 | insdef = Fcons (double_dollars (insdef), pos); |
570d7624 | 5939 | } |
6e710ae5 | 5940 | else |
8d6d9fef | 5941 | insdef = double_dollars (insdef); |
570d7624 | 5942 | } |
58cc3710 | 5943 | else if (STRINGP (initial)) |
8d6d9fef | 5944 | insdef = Fcons (double_dollars (initial), make_number (0)); |
570d7624 | 5945 | else |
8d6d9fef | 5946 | insdef = Qnil; |
570d7624 | 5947 | |
570d7624 | 5948 | count = specpdl_ptr - specpdl; |
a79485af | 5949 | #ifdef VMS |
570d7624 JB |
5950 | specbind (intern ("completion-ignore-case"), Qt); |
5951 | #endif | |
5952 | ||
a79485af RS |
5953 | specbind (intern ("minibuffer-completing-file-name"), Qt); |
5954 | ||
3b7f6e60 | 5955 | GCPRO2 (insdef, default_filename); |
9c856db9 | 5956 | |
f73f57bd | 5957 | #if defined (USE_MOTIF) || defined (HAVE_NTGUI) |
9c856db9 GM |
5958 | if ((NILP (last_nonmenu_event) || CONSP (last_nonmenu_event)) |
5959 | && use_dialog_box | |
5960 | && have_menus_p ()) | |
5961 | { | |
9172b88d GM |
5962 | /* If DIR contains a file name, split it. */ |
5963 | Lisp_Object file; | |
5964 | file = Ffile_name_nondirectory (dir); | |
5965 | if (XSTRING (file)->size && NILP (default_filename)) | |
5966 | { | |
5967 | default_filename = file; | |
5968 | dir = Ffile_name_directory (dir); | |
5969 | } | |
f73f57bd JR |
5970 | if (!NILP(default_filename)) |
5971 | default_filename = Fexpand_file_name (default_filename, dir); | |
9c856db9 GM |
5972 | val = Fx_file_dialog (prompt, dir, default_filename, mustmatch); |
5973 | add_to_history = 1; | |
5974 | } | |
5975 | else | |
5976 | #endif | |
5977 | val = Fcompleting_read (prompt, intern ("read-file-name-internal"), | |
5978 | dir, mustmatch, insdef, | |
5979 | Qfile_name_history, default_filename, Qnil); | |
62f555a5 RS |
5980 | |
5981 | tem = Fsymbol_value (Qfile_name_history); | |
03699b14 | 5982 | if (CONSP (tem) && EQ (XCAR (tem), val)) |
62f555a5 RS |
5983 | replace_in_history = 1; |
5984 | ||
5985 | /* If Fcompleting_read returned the inserted default string itself | |
a8c828be RS |
5986 | (rather than a new string with the same contents), |
5987 | it has to mean that the user typed RET with the minibuffer empty. | |
5988 | In that case, we really want to return "" | |
5989 | so that commands such as set-visited-file-name can distinguish. */ | |
5990 | if (EQ (val, default_filename)) | |
62f555a5 RS |
5991 | { |
5992 | /* In this case, Fcompleting_read has not added an element | |
5993 | to the history. Maybe we should. */ | |
5994 | if (! replace_in_history) | |
5995 | add_to_history = 1; | |
5996 | ||
5997 | val = build_string (""); | |
5998 | } | |
570d7624 | 5999 | |
570d7624 | 6000 | unbind_to (count, Qnil); |
570d7624 | 6001 | UNGCPRO; |
265a9e55 | 6002 | if (NILP (val)) |
570d7624 | 6003 | error ("No file name specified"); |
62f555a5 | 6004 | |
8d6d9fef | 6005 | tem = Fstring_equal (val, CONSP (insdef) ? XCAR (insdef) : insdef); |
62f555a5 | 6006 | |
3b7f6e60 | 6007 | if (!NILP (tem) && !NILP (default_filename)) |
62f555a5 RS |
6008 | val = default_filename; |
6009 | else if (XSTRING (val)->size == 0 && NILP (insdef)) | |
d9bc1c99 | 6010 | { |
3b7f6e60 | 6011 | if (!NILP (default_filename)) |
62f555a5 | 6012 | val = default_filename; |
d9bc1c99 RS |
6013 | else |
6014 | error ("No default file name"); | |
6015 | } | |
62f555a5 | 6016 | val = Fsubstitute_in_file_name (val); |
570d7624 | 6017 | |
62f555a5 RS |
6018 | if (replace_in_history) |
6019 | /* Replace what Fcompleting_read added to the history | |
6020 | with what we will actually return. */ | |
f3fbd155 | 6021 | XSETCAR (Fsymbol_value (Qfile_name_history), double_dollars (val)); |
62f555a5 | 6022 | else if (add_to_history) |
570d7624 | 6023 | { |
62f555a5 RS |
6024 | /* Add the value to the history--but not if it matches |
6025 | the last value already there. */ | |
8d6d9fef | 6026 | Lisp_Object val1 = double_dollars (val); |
62f555a5 | 6027 | tem = Fsymbol_value (Qfile_name_history); |
03699b14 | 6028 | if (! CONSP (tem) || NILP (Fequal (XCAR (tem), val1))) |
62f555a5 | 6029 | Fset (Qfile_name_history, |
8d6d9fef | 6030 | Fcons (val1, tem)); |
570d7624 | 6031 | } |
9c856db9 | 6032 | |
62f555a5 | 6033 | return val; |
570d7624 | 6034 | } |
9c856db9 | 6035 | |
570d7624 | 6036 | \f |
dbda5089 GV |
6037 | void |
6038 | init_fileio_once () | |
6039 | { | |
6040 | /* Must be set before any path manipulation is performed. */ | |
6041 | XSETFASTINT (Vdirectory_sep_char, '/'); | |
6042 | } | |
6043 | ||
9c856db9 | 6044 | \f |
dfcf069d | 6045 | void |
570d7624 JB |
6046 | syms_of_fileio () |
6047 | { | |
0bf2eed2 | 6048 | Qexpand_file_name = intern ("expand-file-name"); |
273e0829 | 6049 | Qsubstitute_in_file_name = intern ("substitute-in-file-name"); |
0bf2eed2 RS |
6050 | Qdirectory_file_name = intern ("directory-file-name"); |
6051 | Qfile_name_directory = intern ("file-name-directory"); | |
6052 | Qfile_name_nondirectory = intern ("file-name-nondirectory"); | |
642ef245 | 6053 | Qunhandled_file_name_directory = intern ("unhandled-file-name-directory"); |
0bf2eed2 | 6054 | Qfile_name_as_directory = intern ("file-name-as-directory"); |
32f4334d | 6055 | Qcopy_file = intern ("copy-file"); |
a6e6e718 | 6056 | Qmake_directory_internal = intern ("make-directory-internal"); |
b272d624 | 6057 | Qmake_directory = intern ("make-directory"); |
32f4334d RS |
6058 | Qdelete_directory = intern ("delete-directory"); |
6059 | Qdelete_file = intern ("delete-file"); | |
6060 | Qrename_file = intern ("rename-file"); | |
6061 | Qadd_name_to_file = intern ("add-name-to-file"); | |
6062 | Qmake_symbolic_link = intern ("make-symbolic-link"); | |
6063 | Qfile_exists_p = intern ("file-exists-p"); | |
6064 | Qfile_executable_p = intern ("file-executable-p"); | |
6065 | Qfile_readable_p = intern ("file-readable-p"); | |
32f4334d | 6066 | Qfile_writable_p = intern ("file-writable-p"); |
1f8653eb RS |
6067 | Qfile_symlink_p = intern ("file-symlink-p"); |
6068 | Qaccess_file = intern ("access-file"); | |
32f4334d | 6069 | Qfile_directory_p = intern ("file-directory-p"); |
adedc71d | 6070 | Qfile_regular_p = intern ("file-regular-p"); |
32f4334d RS |
6071 | Qfile_accessible_directory_p = intern ("file-accessible-directory-p"); |
6072 | Qfile_modes = intern ("file-modes"); | |
6073 | Qset_file_modes = intern ("set-file-modes"); | |
6074 | Qfile_newer_than_file_p = intern ("file-newer-than-file-p"); | |
6075 | Qinsert_file_contents = intern ("insert-file-contents"); | |
6076 | Qwrite_region = intern ("write-region"); | |
6077 | Qverify_visited_file_modtime = intern ("verify-visited-file-modtime"); | |
3ec46acd | 6078 | Qset_visited_file_modtime = intern ("set-visited-file-modtime"); |
32f4334d | 6079 | |
642ef245 | 6080 | staticpro (&Qexpand_file_name); |
273e0829 | 6081 | staticpro (&Qsubstitute_in_file_name); |
642ef245 JB |
6082 | staticpro (&Qdirectory_file_name); |
6083 | staticpro (&Qfile_name_directory); | |
6084 | staticpro (&Qfile_name_nondirectory); | |
6085 | staticpro (&Qunhandled_file_name_directory); | |
6086 | staticpro (&Qfile_name_as_directory); | |
15c65264 | 6087 | staticpro (&Qcopy_file); |
c34b559d | 6088 | staticpro (&Qmake_directory_internal); |
b272d624 | 6089 | staticpro (&Qmake_directory); |
15c65264 RS |
6090 | staticpro (&Qdelete_directory); |
6091 | staticpro (&Qdelete_file); | |
6092 | staticpro (&Qrename_file); | |
6093 | staticpro (&Qadd_name_to_file); | |
6094 | staticpro (&Qmake_symbolic_link); | |
6095 | staticpro (&Qfile_exists_p); | |
6096 | staticpro (&Qfile_executable_p); | |
6097 | staticpro (&Qfile_readable_p); | |
15c65264 | 6098 | staticpro (&Qfile_writable_p); |
1f8653eb RS |
6099 | staticpro (&Qaccess_file); |
6100 | staticpro (&Qfile_symlink_p); | |
15c65264 | 6101 | staticpro (&Qfile_directory_p); |
adedc71d | 6102 | staticpro (&Qfile_regular_p); |
15c65264 RS |
6103 | staticpro (&Qfile_accessible_directory_p); |
6104 | staticpro (&Qfile_modes); | |
6105 | staticpro (&Qset_file_modes); | |
6106 | staticpro (&Qfile_newer_than_file_p); | |
6107 | staticpro (&Qinsert_file_contents); | |
6108 | staticpro (&Qwrite_region); | |
6109 | staticpro (&Qverify_visited_file_modtime); | |
0a61794b | 6110 | staticpro (&Qset_visited_file_modtime); |
642ef245 JB |
6111 | |
6112 | Qfile_name_history = intern ("file-name-history"); | |
6113 | Fset (Qfile_name_history, Qnil); | |
15c65264 RS |
6114 | staticpro (&Qfile_name_history); |
6115 | ||
570d7624 JB |
6116 | Qfile_error = intern ("file-error"); |
6117 | staticpro (&Qfile_error); | |
199607e4 | 6118 | Qfile_already_exists = intern ("file-already-exists"); |
570d7624 | 6119 | staticpro (&Qfile_already_exists); |
c0b7b21c RS |
6120 | Qfile_date_error = intern ("file-date-error"); |
6121 | staticpro (&Qfile_date_error); | |
505ab9bc RS |
6122 | Qexcl = intern ("excl"); |
6123 | staticpro (&Qexcl); | |
570d7624 | 6124 | |
5e570b75 | 6125 | #ifdef DOS_NT |
4c3c22f3 RS |
6126 | Qfind_buffer_file_type = intern ("find-buffer-file-type"); |
6127 | staticpro (&Qfind_buffer_file_type); | |
5e570b75 | 6128 | #endif /* DOS_NT */ |
4c3c22f3 | 6129 | |
b1d1b865 | 6130 | DEFVAR_LISP ("file-name-coding-system", &Vfile_name_coding_system, |
8c1a1077 | 6131 | doc: /* *Coding system for encoding file names. |
346ebf53 | 6132 | If it is nil, `default-file-name-coding-system' (which see) is used. */); |
b1d1b865 RS |
6133 | Vfile_name_coding_system = Qnil; |
6134 | ||
cd913586 KH |
6135 | DEFVAR_LISP ("default-file-name-coding-system", |
6136 | &Vdefault_file_name_coding_system, | |
8c1a1077 | 6137 | doc: /* Default coding system for encoding file names. |
346ebf53 | 6138 | This variable is used only when `file-name-coding-system' is nil. |
8c1a1077 | 6139 | |
346ebf53 | 6140 | This variable is set/changed by the command `set-language-environment'. |
8c1a1077 | 6141 | User should not set this variable manually, |
346ebf53 | 6142 | instead use `file-name-coding-system' to get a constant encoding |
8c1a1077 | 6143 | of file names regardless of the current language environment. */); |
cd913586 KH |
6144 | Vdefault_file_name_coding_system = Qnil; |
6145 | ||
0d420e88 | 6146 | DEFVAR_LISP ("auto-save-file-format", &Vauto_save_file_format, |
8c1a1077 PJ |
6147 | doc: /* *Format in which to write auto-save files. |
6148 | Should be a list of symbols naming formats that are defined in `format-alist'. | |
6149 | If it is t, which is the default, auto-save files are written in the | |
6150 | same format as a regular save would use. */); | |
0d420e88 BG |
6151 | Vauto_save_file_format = Qt; |
6152 | ||
6153 | Qformat_decode = intern ("format-decode"); | |
6154 | staticpro (&Qformat_decode); | |
6155 | Qformat_annotate_function = intern ("format-annotate-function"); | |
6156 | staticpro (&Qformat_annotate_function); | |
6157 | ||
d6a3cc15 RS |
6158 | Qcar_less_than_car = intern ("car-less-than-car"); |
6159 | staticpro (&Qcar_less_than_car); | |
6160 | ||
570d7624 JB |
6161 | Fput (Qfile_error, Qerror_conditions, |
6162 | Fcons (Qfile_error, Fcons (Qerror, Qnil))); | |
6163 | Fput (Qfile_error, Qerror_message, | |
6164 | build_string ("File error")); | |
6165 | ||
6166 | Fput (Qfile_already_exists, Qerror_conditions, | |
6167 | Fcons (Qfile_already_exists, | |
6168 | Fcons (Qfile_error, Fcons (Qerror, Qnil)))); | |
6169 | Fput (Qfile_already_exists, Qerror_message, | |
6170 | build_string ("File already exists")); | |
6171 | ||
c0b7b21c RS |
6172 | Fput (Qfile_date_error, Qerror_conditions, |
6173 | Fcons (Qfile_date_error, | |
6174 | Fcons (Qfile_error, Fcons (Qerror, Qnil)))); | |
6175 | Fput (Qfile_date_error, Qerror_message, | |
6176 | build_string ("Cannot set file date")); | |
6177 | ||
570d7624 | 6178 | DEFVAR_BOOL ("insert-default-directory", &insert_default_directory, |
8c1a1077 | 6179 | doc: /* *Non-nil means when reading a filename start with default dir in minibuffer. */); |
570d7624 JB |
6180 | insert_default_directory = 1; |
6181 | ||
6182 | DEFVAR_BOOL ("vms-stmlf-recfm", &vms_stmlf_recfm, | |
8c1a1077 PJ |
6183 | doc: /* *Non-nil means write new files with record format `stmlf'. |
6184 | nil means use format `var'. This variable is meaningful only on VMS. */); | |
570d7624 JB |
6185 | vms_stmlf_recfm = 0; |
6186 | ||
199607e4 | 6187 | DEFVAR_LISP ("directory-sep-char", &Vdirectory_sep_char, |
8c1a1077 PJ |
6188 | doc: /* Directory separator character for built-in functions that return file names. |
6189 | The value should be either ?/ or ?\\ (any other value is treated as ?\\). | |
6190 | This variable affects the built-in functions only on Windows, | |
6191 | on other platforms, it is initialized so that Lisp code can find out | |
6192 | what the normal separator is. | |
6193 | ||
6194 | WARNING: This variable is deprecated and will be removed in the near | |
6195 | future. DO NOT USE IT. */); | |
199607e4 | 6196 | |
1d1826db | 6197 | DEFVAR_LISP ("file-name-handler-alist", &Vfile_name_handler_alist, |
8c1a1077 PJ |
6198 | doc: /* *Alist of elements (REGEXP . HANDLER) for file names handled specially. |
6199 | If a file name matches REGEXP, then all I/O on that file is done by calling | |
6200 | HANDLER. | |
6201 | ||
6202 | The first argument given to HANDLER is the name of the I/O primitive | |
6203 | to be handled; the remaining arguments are the arguments that were | |
6204 | passed to that primitive. For example, if you do | |
6205 | (file-exists-p FILENAME) | |
6206 | and FILENAME is handled by HANDLER, then HANDLER is called like this: | |
6207 | (funcall HANDLER 'file-exists-p FILENAME) | |
6208 | The function `find-file-name-handler' checks this list for a handler | |
6209 | for its argument. */); | |
09121adc RS |
6210 | Vfile_name_handler_alist = Qnil; |
6211 | ||
0414b394 KH |
6212 | DEFVAR_LISP ("set-auto-coding-function", |
6213 | &Vset_auto_coding_function, | |
8c1a1077 PJ |
6214 | doc: /* If non-nil, a function to call to decide a coding system of file. |
6215 | Two arguments are passed to this function: the file name | |
6216 | and the length of a file contents following the point. | |
6217 | This function should return a coding system to decode the file contents. | |
6218 | It should check the file name against `auto-coding-alist'. | |
6219 | If no coding system is decided, it should check a coding system | |
6220 | specified in the heading lines with the format: | |
6221 | -*- ... coding: CODING-SYSTEM; ... -*- | |
6222 | or local variable spec of the tailing lines with `coding:' tag. */); | |
0414b394 | 6223 | Vset_auto_coding_function = Qnil; |
c9e82392 | 6224 | |
d6a3cc15 | 6225 | DEFVAR_LISP ("after-insert-file-functions", &Vafter_insert_file_functions, |
8c1a1077 PJ |
6226 | doc: /* A list of functions to be called at the end of `insert-file-contents'. |
6227 | Each is passed one argument, the number of bytes inserted. It should return | |
6228 | the new byte count, and leave point the same. If `insert-file-contents' is | |
6229 | intercepted by a handler from `file-name-handler-alist', that handler is | |
6230 | responsible for calling the after-insert-file-functions if appropriate. */); | |
d6a3cc15 RS |
6231 | Vafter_insert_file_functions = Qnil; |
6232 | ||
6233 | DEFVAR_LISP ("write-region-annotate-functions", &Vwrite_region_annotate_functions, | |
8c1a1077 PJ |
6234 | doc: /* A list of functions to be called at the start of `write-region'. |
6235 | Each is passed two arguments, START and END as for `write-region'. | |
6236 | These are usually two numbers but not always; see the documentation | |
6237 | for `write-region'. The function should return a list of pairs | |
6238 | of the form (POSITION . STRING), consisting of strings to be effectively | |
6239 | inserted at the specified positions of the file being written (1 means to | |
6240 | insert before the first byte written). The POSITIONs must be sorted into | |
6241 | increasing order. If there are several functions in the list, the several | |
6242 | lists are merged destructively. */); | |
d6a3cc15 RS |
6243 | Vwrite_region_annotate_functions = Qnil; |
6244 | ||
6fc6f94b RS |
6245 | DEFVAR_LISP ("write-region-annotations-so-far", |
6246 | &Vwrite_region_annotations_so_far, | |
8c1a1077 PJ |
6247 | doc: /* When an annotation function is called, this holds the previous annotations. |
6248 | These are the annotations made by other annotation functions | |
6249 | that were already called. See also `write-region-annotate-functions'. */); | |
6fc6f94b RS |
6250 | Vwrite_region_annotations_so_far = Qnil; |
6251 | ||
82c2d839 | 6252 | DEFVAR_LISP ("inhibit-file-name-handlers", &Vinhibit_file_name_handlers, |
8c1a1077 PJ |
6253 | doc: /* A list of file name handlers that temporarily should not be used. |
6254 | This applies only to the operation `inhibit-file-name-operation'. */); | |
82c2d839 RS |
6255 | Vinhibit_file_name_handlers = Qnil; |
6256 | ||
a65970a0 | 6257 | DEFVAR_LISP ("inhibit-file-name-operation", &Vinhibit_file_name_operation, |
8c1a1077 | 6258 | doc: /* The operation for which `inhibit-file-name-handlers' is applicable. */); |
a65970a0 RS |
6259 | Vinhibit_file_name_operation = Qnil; |
6260 | ||
e54d3b5d | 6261 | DEFVAR_LISP ("auto-save-list-file-name", &Vauto_save_list_file_name, |
8c1a1077 PJ |
6262 | doc: /* File name in which we write a list of all auto save file names. |
6263 | This variable is initialized automatically from `auto-save-list-file-prefix' | |
6264 | shortly after Emacs reads your `.emacs' file, if you have not yet given it | |
6265 | a non-nil value. */); | |
e54d3b5d RS |
6266 | Vauto_save_list_file_name = Qnil; |
6267 | ||
642ef245 | 6268 | defsubr (&Sfind_file_name_handler); |
570d7624 JB |
6269 | defsubr (&Sfile_name_directory); |
6270 | defsubr (&Sfile_name_nondirectory); | |
642ef245 | 6271 | defsubr (&Sunhandled_file_name_directory); |
570d7624 JB |
6272 | defsubr (&Sfile_name_as_directory); |
6273 | defsubr (&Sdirectory_file_name); | |
6274 | defsubr (&Smake_temp_name); | |
6275 | defsubr (&Sexpand_file_name); | |
6276 | defsubr (&Ssubstitute_in_file_name); | |
6277 | defsubr (&Scopy_file); | |
9bbe01fb | 6278 | defsubr (&Smake_directory_internal); |
aa734e17 | 6279 | defsubr (&Sdelete_directory); |
570d7624 JB |
6280 | defsubr (&Sdelete_file); |
6281 | defsubr (&Srename_file); | |
6282 | defsubr (&Sadd_name_to_file); | |
6283 | #ifdef S_IFLNK | |
6284 | defsubr (&Smake_symbolic_link); | |
6285 | #endif /* S_IFLNK */ | |
6286 | #ifdef VMS | |
6287 | defsubr (&Sdefine_logical_name); | |
6288 | #endif /* VMS */ | |
6289 | #ifdef HPUX_NET | |
6290 | defsubr (&Ssysnetunam); | |
6291 | #endif /* HPUX_NET */ | |
6292 | defsubr (&Sfile_name_absolute_p); | |
6293 | defsubr (&Sfile_exists_p); | |
6294 | defsubr (&Sfile_executable_p); | |
6295 | defsubr (&Sfile_readable_p); | |
6296 | defsubr (&Sfile_writable_p); | |
1f8653eb | 6297 | defsubr (&Saccess_file); |
570d7624 JB |
6298 | defsubr (&Sfile_symlink_p); |
6299 | defsubr (&Sfile_directory_p); | |
b72dea2a | 6300 | defsubr (&Sfile_accessible_directory_p); |
f793dc6c | 6301 | defsubr (&Sfile_regular_p); |
570d7624 JB |
6302 | defsubr (&Sfile_modes); |
6303 | defsubr (&Sset_file_modes); | |
c24e9a53 RS |
6304 | defsubr (&Sset_default_file_modes); |
6305 | defsubr (&Sdefault_file_modes); | |
570d7624 JB |
6306 | defsubr (&Sfile_newer_than_file_p); |
6307 | defsubr (&Sinsert_file_contents); | |
6308 | defsubr (&Swrite_region); | |
d6a3cc15 | 6309 | defsubr (&Scar_less_than_car); |
570d7624 JB |
6310 | defsubr (&Sverify_visited_file_modtime); |
6311 | defsubr (&Sclear_visited_file_modtime); | |
f5d5eccf | 6312 | defsubr (&Svisited_file_modtime); |
570d7624 JB |
6313 | defsubr (&Sset_visited_file_modtime); |
6314 | defsubr (&Sdo_auto_save); | |
6315 | defsubr (&Sset_buffer_auto_saved); | |
b60247d9 | 6316 | defsubr (&Sclear_buffer_auto_save_failure); |
570d7624 JB |
6317 | defsubr (&Srecent_auto_save_p); |
6318 | ||
6319 | defsubr (&Sread_file_name_internal); | |
6320 | defsubr (&Sread_file_name); | |
85ffea93 | 6321 | |
483a2e10 | 6322 | #ifdef unix |
85ffea93 | 6323 | defsubr (&Sunix_sync); |
483a2e10 | 6324 | #endif |
570d7624 | 6325 | } |
71e1147d | 6326 |