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