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 | |
bb369dc6 RS |
26 | #if defined (USG5) || defined (BSD_SYSTEM) || defined (LINUX) |
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 | #define min(a, b) ((a) < (b) ? (a) : (b)) |
163 | #define max(a, b) ((a) > (b) ? (a) : (b)) | |
164 | ||
165 | /* Nonzero during writing of auto-save files */ | |
166 | int auto_saving; | |
167 | ||
168 | /* Set by auto_save_1 to mode of original file so Fwrite_region will create | |
169 | a new file with the same mode as the original */ | |
170 | int auto_save_mode_bits; | |
171 | ||
b1d1b865 RS |
172 | /* Coding system for file names, or nil if none. */ |
173 | Lisp_Object Vfile_name_coding_system; | |
174 | ||
cd913586 KH |
175 | /* Coding system for file names used only when |
176 | Vfile_name_coding_system is nil. */ | |
177 | Lisp_Object Vdefault_file_name_coding_system; | |
178 | ||
199607e4 | 179 | /* Alist of elements (REGEXP . HANDLER) for file names |
32f4334d RS |
180 | whose I/O is done with a special handler. */ |
181 | Lisp_Object Vfile_name_handler_alist; | |
182 | ||
0d420e88 BG |
183 | /* Format for auto-save files */ |
184 | Lisp_Object Vauto_save_file_format; | |
185 | ||
186 | /* Lisp functions for translating file formats */ | |
187 | Lisp_Object Qformat_decode, Qformat_annotate_function; | |
188 | ||
c9e82392 | 189 | /* Function to be called to decide a coding system of a reading file. */ |
0414b394 | 190 | Lisp_Object Vset_auto_coding_function; |
c9e82392 | 191 | |
d6a3cc15 RS |
192 | /* Functions to be called to process text properties in inserted file. */ |
193 | Lisp_Object Vafter_insert_file_functions; | |
194 | ||
195 | /* Functions to be called to create text property annotations for file. */ | |
196 | Lisp_Object Vwrite_region_annotate_functions; | |
197 | ||
6fc6f94b RS |
198 | /* During build_annotations, each time an annotation function is called, |
199 | this holds the annotations made by the previous functions. */ | |
200 | Lisp_Object Vwrite_region_annotations_so_far; | |
201 | ||
e54d3b5d RS |
202 | /* File name in which we write a list of all our auto save files. */ |
203 | Lisp_Object Vauto_save_list_file_name; | |
204 | ||
570d7624 JB |
205 | /* Nonzero means, when reading a filename in the minibuffer, |
206 | start out by inserting the default directory into the minibuffer. */ | |
207 | int insert_default_directory; | |
208 | ||
209 | /* On VMS, nonzero means write new files with record format stmlf. | |
210 | Zero means use var format. */ | |
211 | int vms_stmlf_recfm; | |
212 | ||
199607e4 RS |
213 | /* On NT, specifies the directory separator character, used (eg.) when |
214 | expanding file names. This can be bound to / or \. */ | |
215 | Lisp_Object Vdirectory_sep_char; | |
216 | ||
84f6296a RS |
217 | extern Lisp_Object Vuser_login_name; |
218 | ||
c1c4693e RS |
219 | #ifdef WINDOWSNT |
220 | extern Lisp_Object Vw32_get_true_file_attributes; | |
221 | #endif | |
222 | ||
84f6296a RS |
223 | extern int minibuf_level; |
224 | ||
a8c828be RS |
225 | extern int minibuffer_auto_raise; |
226 | ||
a65970a0 RS |
227 | /* These variables describe handlers that have "already" had a chance |
228 | to handle the current operation. | |
229 | ||
230 | Vinhibit_file_name_handlers is a list of file name handlers. | |
231 | Vinhibit_file_name_operation is the operation being handled. | |
232 | If we try to handle that operation, we ignore those handlers. */ | |
233 | ||
82c2d839 | 234 | static Lisp_Object Vinhibit_file_name_handlers; |
a65970a0 | 235 | static Lisp_Object Vinhibit_file_name_operation; |
82c2d839 | 236 | |
c0b7b21c | 237 | Lisp_Object Qfile_error, Qfile_already_exists, Qfile_date_error; |
505ab9bc | 238 | Lisp_Object Qexcl; |
15c65264 RS |
239 | Lisp_Object Qfile_name_history; |
240 | ||
d6a3cc15 RS |
241 | Lisp_Object Qcar_less_than_car; |
242 | ||
ce51c54c | 243 | static int a_write P_ ((int, Lisp_Object, int, int, |
b9013200 | 244 | Lisp_Object *, struct coding_system *)); |
ce51c54c KH |
245 | static int e_write P_ ((int, Lisp_Object, int, int, struct coding_system *)); |
246 | ||
ec7adf26 | 247 | \f |
5d01d666 | 248 | void |
570d7624 JB |
249 | report_file_error (string, data) |
250 | char *string; | |
251 | Lisp_Object data; | |
252 | { | |
253 | Lisp_Object errstring; | |
505ab9bc | 254 | int errorno = errno; |
570d7624 | 255 | |
ca9c0567 | 256 | synchronize_system_messages_locale (); |
68c45bf0 PE |
257 | errstring = code_convert_string_norecord (build_string (strerror (errorno)), |
258 | Vlocale_coding_system, 0); | |
259 | ||
570d7624 | 260 | while (1) |
505ab9bc RS |
261 | switch (errorno) |
262 | { | |
263 | case EEXIST: | |
264 | Fsignal (Qfile_already_exists, Fcons (errstring, data)); | |
265 | break; | |
266 | default: | |
267 | /* System error messages are capitalized. Downcase the initial | |
268 | unless it is followed by a slash. */ | |
269 | if (XSTRING (errstring)->data[1] != '/') | |
270 | XSTRING (errstring)->data[0] = DOWNCASE (XSTRING (errstring)->data[0]); | |
271 | ||
272 | Fsignal (Qfile_error, | |
273 | Fcons (build_string (string), Fcons (errstring, data))); | |
274 | } | |
570d7624 | 275 | } |
b5148e85 | 276 | |
b27a1703 | 277 | Lisp_Object |
b5148e85 RS |
278 | close_file_unwind (fd) |
279 | Lisp_Object fd; | |
280 | { | |
68c45bf0 | 281 | emacs_close (XFASTINT (fd)); |
b27a1703 | 282 | return Qnil; |
b5148e85 | 283 | } |
a1d2b64a RS |
284 | |
285 | /* Restore point, having saved it as a marker. */ | |
286 | ||
ec7adf26 | 287 | static Lisp_Object |
a1d2b64a | 288 | restore_point_unwind (location) |
199607e4 | 289 | Lisp_Object location; |
a1d2b64a | 290 | { |
ec7adf26 | 291 | Fgoto_char (location); |
a1d2b64a | 292 | Fset_marker (location, Qnil, Qnil); |
b27a1703 | 293 | return Qnil; |
a1d2b64a | 294 | } |
570d7624 | 295 | \f |
0bf2eed2 | 296 | Lisp_Object Qexpand_file_name; |
273e0829 | 297 | Lisp_Object Qsubstitute_in_file_name; |
0bf2eed2 RS |
298 | Lisp_Object Qdirectory_file_name; |
299 | Lisp_Object Qfile_name_directory; | |
300 | Lisp_Object Qfile_name_nondirectory; | |
642ef245 | 301 | Lisp_Object Qunhandled_file_name_directory; |
0bf2eed2 | 302 | Lisp_Object Qfile_name_as_directory; |
32f4334d | 303 | Lisp_Object Qcopy_file; |
a6e6e718 | 304 | Lisp_Object Qmake_directory_internal; |
b272d624 | 305 | Lisp_Object Qmake_directory; |
32f4334d RS |
306 | Lisp_Object Qdelete_directory; |
307 | Lisp_Object Qdelete_file; | |
308 | Lisp_Object Qrename_file; | |
309 | Lisp_Object Qadd_name_to_file; | |
310 | Lisp_Object Qmake_symbolic_link; | |
311 | Lisp_Object Qfile_exists_p; | |
312 | Lisp_Object Qfile_executable_p; | |
313 | Lisp_Object Qfile_readable_p; | |
32f4334d | 314 | Lisp_Object Qfile_writable_p; |
1f8653eb RS |
315 | Lisp_Object Qfile_symlink_p; |
316 | Lisp_Object Qaccess_file; | |
32f4334d | 317 | Lisp_Object Qfile_directory_p; |
adedc71d | 318 | Lisp_Object Qfile_regular_p; |
32f4334d RS |
319 | Lisp_Object Qfile_accessible_directory_p; |
320 | Lisp_Object Qfile_modes; | |
321 | Lisp_Object Qset_file_modes; | |
322 | Lisp_Object Qfile_newer_than_file_p; | |
323 | Lisp_Object Qinsert_file_contents; | |
324 | Lisp_Object Qwrite_region; | |
325 | Lisp_Object Qverify_visited_file_modtime; | |
3ec46acd | 326 | Lisp_Object Qset_visited_file_modtime; |
32f4334d | 327 | |
49307295 KH |
328 | DEFUN ("find-file-name-handler", Ffind_file_name_handler, Sfind_file_name_handler, 2, 2, 0, |
329 | "Return FILENAME's handler function for OPERATION, if it has one.\n\ | |
642ef245 JB |
330 | Otherwise, return nil.\n\ |
331 | A file name is handled if one of the regular expressions in\n\ | |
82c2d839 | 332 | `file-name-handler-alist' matches it.\n\n\ |
a65970a0 RS |
333 | If OPERATION equals `inhibit-file-name-operation', then we ignore\n\ |
334 | any handlers that are members of `inhibit-file-name-handlers',\n\ | |
335 | but we still do run any other handlers. This lets handlers\n\ | |
82c2d839 | 336 | use the standard functions without calling themselves recursively.") |
49307295 KH |
337 | (filename, operation) |
338 | Lisp_Object filename, operation; | |
32f4334d | 339 | { |
642ef245 | 340 | /* This function must not munge the match data. */ |
a65970a0 | 341 | Lisp_Object chain, inhibited_handlers; |
642ef245 | 342 | |
e4432095 JB |
343 | CHECK_STRING (filename, 0); |
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; | |
03699b14 | 358 | string = XCAR (elt); |
93c30b5f | 359 | if (STRINGP (string) && fast_string_match (string, filename) >= 0) |
a65970a0 RS |
360 | { |
361 | Lisp_Object handler, tem; | |
362 | ||
03699b14 | 363 | handler = XCDR (elt); |
a65970a0 RS |
364 | tem = Fmemq (handler, inhibited_handlers); |
365 | if (NILP (tem)) | |
366 | return handler; | |
367 | } | |
32f4334d | 368 | } |
642ef245 JB |
369 | |
370 | QUIT; | |
32f4334d RS |
371 | } |
372 | return Qnil; | |
373 | } | |
374 | \f | |
570d7624 JB |
375 | DEFUN ("file-name-directory", Ffile_name_directory, Sfile_name_directory, |
376 | 1, 1, 0, | |
3b7f6e60 EN |
377 | "Return the directory component in file name FILENAME.\n\ |
378 | Return nil if FILENAME does not include a directory.\n\ | |
570d7624 JB |
379 | Otherwise return a directory spec.\n\ |
380 | Given a Unix syntax file name, returns a string ending in slash;\n\ | |
381 | on VMS, perhaps instead a string ending in `:', `]' or `>'.") | |
3b7f6e60 EN |
382 | (filename) |
383 | Lisp_Object filename; | |
570d7624 JB |
384 | { |
385 | register unsigned char *beg; | |
386 | register unsigned char *p; | |
0bf2eed2 | 387 | Lisp_Object handler; |
570d7624 | 388 | |
3b7f6e60 | 389 | CHECK_STRING (filename, 0); |
570d7624 | 390 | |
0bf2eed2 RS |
391 | /* If the file name has special constructs in it, |
392 | call the corresponding file handler. */ | |
3b7f6e60 | 393 | handler = Ffind_file_name_handler (filename, Qfile_name_directory); |
0bf2eed2 | 394 | if (!NILP (handler)) |
3b7f6e60 | 395 | return call2 (handler, Qfile_name_directory, filename); |
0bf2eed2 | 396 | |
4c3c22f3 | 397 | #ifdef FILE_SYSTEM_CASE |
3b7f6e60 | 398 | filename = FILE_SYSTEM_CASE (filename); |
4c3c22f3 | 399 | #endif |
3b7f6e60 | 400 | beg = XSTRING (filename)->data; |
199607e4 RS |
401 | #ifdef DOS_NT |
402 | beg = strcpy (alloca (strlen (beg) + 1), beg); | |
403 | #endif | |
fc932ac6 | 404 | p = beg + STRING_BYTES (XSTRING (filename)); |
570d7624 | 405 | |
199607e4 | 406 | while (p != beg && !IS_DIRECTORY_SEP (p[-1]) |
570d7624 JB |
407 | #ifdef VMS |
408 | && p[-1] != ':' && p[-1] != ']' && p[-1] != '>' | |
409 | #endif /* VMS */ | |
199607e4 | 410 | #ifdef DOS_NT |
ba14e174 RS |
411 | /* only recognise drive specifier at the beginning */ |
412 | && !(p[-1] == ':' | |
413 | /* handle the "/:d:foo" and "/:foo" cases correctly */ | |
414 | && ((p == beg + 2 && !IS_DIRECTORY_SEP (*beg)) | |
415 | || (p == beg + 4 && IS_DIRECTORY_SEP (*beg)))) | |
199607e4 | 416 | #endif |
570d7624 JB |
417 | ) p--; |
418 | ||
419 | if (p == beg) | |
420 | return Qnil; | |
5e570b75 | 421 | #ifdef DOS_NT |
4c3c22f3 | 422 | /* Expansion of "c:" to drive and default directory. */ |
ba14e174 | 423 | if (p[-1] == ':') |
4c3c22f3 | 424 | { |
4c3c22f3 | 425 | /* MAXPATHLEN+1 is guaranteed to be enough space for getdefdir. */ |
199607e4 | 426 | unsigned char *res = alloca (MAXPATHLEN + 1); |
ba14e174 RS |
427 | unsigned char *r = res; |
428 | ||
429 | if (p == beg + 4 && IS_DIRECTORY_SEP (*beg) && beg[1] == ':') | |
430 | { | |
431 | strncpy (res, beg, 2); | |
432 | beg += 2; | |
433 | r += 2; | |
434 | } | |
435 | ||
436 | if (getdefdir (toupper (*beg) - 'A' + 1, r)) | |
4c3c22f3 | 437 | { |
199607e4 | 438 | if (!IS_DIRECTORY_SEP (res[strlen (res) - 1])) |
4c3c22f3 RS |
439 | strcat (res, "/"); |
440 | beg = res; | |
441 | p = beg + strlen (beg); | |
442 | } | |
443 | } | |
199607e4 | 444 | CORRECT_DIR_SEPS (beg); |
5e570b75 | 445 | #endif /* DOS_NT */ |
60d67b83 RS |
446 | |
447 | if (STRING_MULTIBYTE (filename)) | |
448 | return make_string (beg, p - beg); | |
449 | return make_unibyte_string (beg, p - beg); | |
570d7624 JB |
450 | } |
451 | ||
60d67b83 RS |
452 | DEFUN ("file-name-nondirectory", Ffile_name_nondirectory, |
453 | Sfile_name_nondirectory, 1, 1, 0, | |
3b7f6e60 | 454 | "Return file name FILENAME sans its directory.\n\ |
570d7624 JB |
455 | For example, in a Unix-syntax file name,\n\ |
456 | this is everything after the last slash,\n\ | |
457 | or the entire name if it contains no slash.") | |
3b7f6e60 EN |
458 | (filename) |
459 | Lisp_Object filename; | |
570d7624 JB |
460 | { |
461 | register unsigned char *beg, *p, *end; | |
0bf2eed2 | 462 | Lisp_Object handler; |
570d7624 | 463 | |
3b7f6e60 | 464 | CHECK_STRING (filename, 0); |
570d7624 | 465 | |
0bf2eed2 RS |
466 | /* If the file name has special constructs in it, |
467 | call the corresponding file handler. */ | |
3b7f6e60 | 468 | handler = Ffind_file_name_handler (filename, Qfile_name_nondirectory); |
0bf2eed2 | 469 | if (!NILP (handler)) |
3b7f6e60 | 470 | return call2 (handler, Qfile_name_nondirectory, filename); |
0bf2eed2 | 471 | |
3b7f6e60 | 472 | beg = XSTRING (filename)->data; |
fc932ac6 | 473 | end = p = beg + STRING_BYTES (XSTRING (filename)); |
570d7624 | 474 | |
199607e4 | 475 | while (p != beg && !IS_DIRECTORY_SEP (p[-1]) |
570d7624 JB |
476 | #ifdef VMS |
477 | && p[-1] != ':' && p[-1] != ']' && p[-1] != '>' | |
478 | #endif /* VMS */ | |
199607e4 RS |
479 | #ifdef DOS_NT |
480 | /* only recognise drive specifier at beginning */ | |
ba14e174 RS |
481 | && !(p[-1] == ':' |
482 | /* handle the "/:d:foo" case correctly */ | |
483 | && (p == beg + 2 || (p == beg + 4 && IS_DIRECTORY_SEP (*beg)))) | |
199607e4 | 484 | #endif |
60d67b83 RS |
485 | ) |
486 | p--; | |
570d7624 | 487 | |
60d67b83 RS |
488 | if (STRING_MULTIBYTE (filename)) |
489 | return make_string (p, end - p); | |
490 | return make_unibyte_string (p, end - p); | |
570d7624 | 491 | } |
642ef245 | 492 | |
60d67b83 RS |
493 | DEFUN ("unhandled-file-name-directory", Funhandled_file_name_directory, |
494 | Sunhandled_file_name_directory, 1, 1, 0, | |
642ef245 JB |
495 | "Return a directly usable directory name somehow associated with FILENAME.\n\ |
496 | A `directly usable' directory name is one that may be used without the\n\ | |
497 | intervention of any file handler.\n\ | |
498 | If FILENAME is a directly usable file itself, return\n\ | |
ec7adf26 | 499 | \(file-name-directory FILENAME).\n\ |
642ef245 JB |
500 | The `call-process' and `start-process' functions use this function to\n\ |
501 | get a current directory to run processes in.") | |
502 | (filename) | |
503 | Lisp_Object filename; | |
504 | { | |
505 | Lisp_Object handler; | |
506 | ||
507 | /* If the file name has special constructs in it, | |
508 | call the corresponding file handler. */ | |
49307295 | 509 | handler = Ffind_file_name_handler (filename, Qunhandled_file_name_directory); |
642ef245 JB |
510 | if (!NILP (handler)) |
511 | return call2 (handler, Qunhandled_file_name_directory, filename); | |
512 | ||
513 | return Ffile_name_directory (filename); | |
514 | } | |
515 | ||
570d7624 JB |
516 | \f |
517 | char * | |
518 | file_name_as_directory (out, in) | |
519 | char *out, *in; | |
520 | { | |
521 | int size = strlen (in) - 1; | |
522 | ||
523 | strcpy (out, in); | |
524 | ||
8aa3a244 RS |
525 | if (size < 0) |
526 | { | |
154a307d KH |
527 | out[0] = '.'; |
528 | out[1] = '/'; | |
529 | out[2] = 0; | |
8aa3a244 RS |
530 | return out; |
531 | } | |
532 | ||
570d7624 JB |
533 | #ifdef VMS |
534 | /* Is it already a directory string? */ | |
535 | if (in[size] == ':' || in[size] == ']' || in[size] == '>') | |
536 | return out; | |
537 | /* Is it a VMS directory file name? If so, hack VMS syntax. */ | |
538 | else if (! index (in, '/') | |
539 | && ((size > 3 && ! strcmp (&in[size - 3], ".DIR")) | |
540 | || (size > 3 && ! strcmp (&in[size - 3], ".dir")) | |
541 | || (size > 5 && (! strncmp (&in[size - 5], ".DIR", 4) | |
542 | || ! strncmp (&in[size - 5], ".dir", 4)) | |
543 | && (in[size - 1] == '.' || in[size - 1] == ';') | |
544 | && in[size] == '1'))) | |
545 | { | |
546 | register char *p, *dot; | |
547 | char brack; | |
548 | ||
549 | /* x.dir -> [.x] | |
550 | dir:x.dir --> dir:[x] | |
551 | dir:[x]y.dir --> dir:[x.y] */ | |
552 | p = in + size; | |
553 | while (p != in && *p != ':' && *p != '>' && *p != ']') p--; | |
554 | if (p != in) | |
555 | { | |
556 | strncpy (out, in, p - in); | |
557 | out[p - in] = '\0'; | |
558 | if (*p == ':') | |
559 | { | |
560 | brack = ']'; | |
561 | strcat (out, ":["); | |
562 | } | |
563 | else | |
564 | { | |
565 | brack = *p; | |
566 | strcat (out, "."); | |
567 | } | |
568 | p++; | |
569 | } | |
570 | else | |
571 | { | |
572 | brack = ']'; | |
573 | strcpy (out, "[."); | |
574 | } | |
bfb61299 JB |
575 | dot = index (p, '.'); |
576 | if (dot) | |
570d7624 JB |
577 | { |
578 | /* blindly remove any extension */ | |
579 | size = strlen (out) + (dot - p); | |
580 | strncat (out, p, dot - p); | |
581 | } | |
582 | else | |
583 | { | |
584 | strcat (out, p); | |
585 | size = strlen (out); | |
586 | } | |
587 | out[size++] = brack; | |
588 | out[size] = '\0'; | |
589 | } | |
590 | #else /* not VMS */ | |
591 | /* For Unix syntax, Append a slash if necessary */ | |
199607e4 | 592 | if (!IS_DIRECTORY_SEP (out[size])) |
5e570b75 RS |
593 | { |
594 | out[size + 1] = DIRECTORY_SEP; | |
595 | out[size + 2] = '\0'; | |
596 | } | |
199607e4 RS |
597 | #ifdef DOS_NT |
598 | CORRECT_DIR_SEPS (out); | |
599 | #endif | |
570d7624 JB |
600 | #endif /* not VMS */ |
601 | return out; | |
602 | } | |
603 | ||
604 | DEFUN ("file-name-as-directory", Ffile_name_as_directory, | |
605 | Sfile_name_as_directory, 1, 1, 0, | |
606 | "Return a string representing file FILENAME interpreted as a directory.\n\ | |
607 | This operation exists because a directory is also a file, but its name as\n\ | |
608 | a directory is different from its name as a file.\n\ | |
609 | The result can be used as the value of `default-directory'\n\ | |
610 | or passed as second argument to `expand-file-name'.\n\ | |
611 | For a Unix-syntax file name, just appends a slash.\n\ | |
612 | On VMS, converts \"[X]FOO.DIR\" to \"[X.FOO]\", etc.") | |
613 | (file) | |
614 | Lisp_Object file; | |
615 | { | |
616 | char *buf; | |
0bf2eed2 | 617 | Lisp_Object handler; |
570d7624 JB |
618 | |
619 | CHECK_STRING (file, 0); | |
265a9e55 | 620 | if (NILP (file)) |
570d7624 | 621 | return Qnil; |
0bf2eed2 RS |
622 | |
623 | /* If the file name has special constructs in it, | |
624 | call the corresponding file handler. */ | |
49307295 | 625 | handler = Ffind_file_name_handler (file, Qfile_name_as_directory); |
0bf2eed2 RS |
626 | if (!NILP (handler)) |
627 | return call2 (handler, Qfile_name_as_directory, file); | |
628 | ||
fc932ac6 | 629 | buf = (char *) alloca (STRING_BYTES (XSTRING (file)) + 10); |
570d7624 JB |
630 | return build_string (file_name_as_directory (buf, XSTRING (file)->data)); |
631 | } | |
632 | \f | |
633 | /* | |
634 | * Convert from directory name to filename. | |
635 | * On VMS: | |
636 | * xyzzy:[mukesh.emacs] => xyzzy:[mukesh]emacs.dir.1 | |
637 | * xyzzy:[mukesh] => xyzzy:[000000]mukesh.dir.1 | |
199607e4 | 638 | * On UNIX, it's simple: just make sure there isn't a terminating / |
570d7624 JB |
639 | |
640 | * Value is nonzero if the string output is different from the input. | |
641 | */ | |
642 | ||
dfcf069d | 643 | int |
570d7624 JB |
644 | directory_file_name (src, dst) |
645 | char *src, *dst; | |
646 | { | |
647 | long slen; | |
648 | #ifdef VMS | |
649 | long rlen; | |
650 | char * ptr, * rptr; | |
651 | char bracket; | |
652 | struct FAB fab = cc$rms_fab; | |
653 | struct NAM nam = cc$rms_nam; | |
654 | char esa[NAM$C_MAXRSS]; | |
655 | #endif /* VMS */ | |
656 | ||
657 | slen = strlen (src); | |
658 | #ifdef VMS | |
659 | if (! index (src, '/') | |
660 | && (src[slen - 1] == ']' | |
661 | || src[slen - 1] == ':' | |
662 | || src[slen - 1] == '>')) | |
663 | { | |
664 | /* VMS style - convert [x.y.z] to [x.y]z, [x] to [000000]x */ | |
665 | fab.fab$l_fna = src; | |
666 | fab.fab$b_fns = slen; | |
667 | fab.fab$l_nam = &nam; | |
668 | fab.fab$l_fop = FAB$M_NAM; | |
669 | ||
670 | nam.nam$l_esa = esa; | |
671 | nam.nam$b_ess = sizeof esa; | |
672 | nam.nam$b_nop |= NAM$M_SYNCHK; | |
673 | ||
674 | /* We call SYS$PARSE to handle such things as [--] for us. */ | |
199607e4 | 675 | if (SYS$PARSE (&fab, 0, 0) == RMS$_NORMAL) |
570d7624 JB |
676 | { |
677 | slen = nam.nam$b_esl; | |
678 | if (esa[slen - 1] == ';' && esa[slen - 2] == '.') | |
679 | slen -= 2; | |
680 | esa[slen] = '\0'; | |
681 | src = esa; | |
682 | } | |
683 | if (src[slen - 1] != ']' && src[slen - 1] != '>') | |
684 | { | |
685 | /* what about when we have logical_name:???? */ | |
686 | if (src[slen - 1] == ':') | |
5e570b75 | 687 | { /* Xlate logical name and see what we get */ |
570d7624 JB |
688 | ptr = strcpy (dst, src); /* upper case for getenv */ |
689 | while (*ptr) | |
690 | { | |
691 | if ('a' <= *ptr && *ptr <= 'z') | |
692 | *ptr -= 040; | |
693 | ptr++; | |
694 | } | |
5e570b75 | 695 | dst[slen - 1] = 0; /* remove colon */ |
570d7624 JB |
696 | if (!(src = egetenv (dst))) |
697 | return 0; | |
698 | /* should we jump to the beginning of this procedure? | |
699 | Good points: allows us to use logical names that xlate | |
700 | to Unix names, | |
701 | Bad points: can be a problem if we just translated to a device | |
702 | name... | |
703 | For now, I'll punt and always expect VMS names, and hope for | |
704 | the best! */ | |
705 | slen = strlen (src); | |
706 | if (src[slen - 1] != ']' && src[slen - 1] != '>') | |
707 | { /* no recursion here! */ | |
708 | strcpy (dst, src); | |
709 | return 0; | |
710 | } | |
711 | } | |
712 | else | |
5e570b75 | 713 | { /* not a directory spec */ |
570d7624 JB |
714 | strcpy (dst, src); |
715 | return 0; | |
716 | } | |
717 | } | |
718 | bracket = src[slen - 1]; | |
719 | ||
720 | /* If bracket is ']' or '>', bracket - 2 is the corresponding | |
721 | opening bracket. */ | |
bfb61299 JB |
722 | ptr = index (src, bracket - 2); |
723 | if (ptr == 0) | |
570d7624 JB |
724 | { /* no opening bracket */ |
725 | strcpy (dst, src); | |
726 | return 0; | |
727 | } | |
728 | if (!(rptr = rindex (src, '.'))) | |
729 | rptr = ptr; | |
730 | slen = rptr - src; | |
731 | strncpy (dst, src, slen); | |
732 | dst[slen] = '\0'; | |
733 | if (*rptr == '.') | |
734 | { | |
735 | dst[slen++] = bracket; | |
736 | dst[slen] = '\0'; | |
737 | } | |
738 | else | |
739 | { | |
740 | /* If we have the top-level of a rooted directory (i.e. xx:[000000]), | |
741 | then translate the device and recurse. */ | |
742 | if (dst[slen - 1] == ':' | |
5e570b75 | 743 | && dst[slen - 2] != ':' /* skip decnet nodes */ |
199607e4 | 744 | && strcmp (src + slen, "[000000]") == 0) |
570d7624 JB |
745 | { |
746 | dst[slen - 1] = '\0'; | |
747 | if ((ptr = egetenv (dst)) | |
748 | && (rlen = strlen (ptr) - 1) > 0 | |
749 | && (ptr[rlen] == ']' || ptr[rlen] == '>') | |
750 | && ptr[rlen - 1] == '.') | |
751 | { | |
72b21817 RS |
752 | char * buf = (char *) alloca (strlen (ptr) + 1); |
753 | strcpy (buf, ptr); | |
754 | buf[rlen - 1] = ']'; | |
755 | buf[rlen] = '\0'; | |
756 | return directory_file_name (buf, dst); | |
570d7624 JB |
757 | } |
758 | else | |
759 | dst[slen - 1] = ':'; | |
760 | } | |
761 | strcat (dst, "[000000]"); | |
762 | slen += 8; | |
763 | } | |
764 | rptr++; | |
765 | rlen = strlen (rptr) - 1; | |
766 | strncat (dst, rptr, rlen); | |
767 | dst[slen + rlen] = '\0'; | |
768 | strcat (dst, ".DIR.1"); | |
769 | return 1; | |
770 | } | |
771 | #endif /* VMS */ | |
772 | /* Process as Unix format: just remove any final slash. | |
773 | But leave "/" unchanged; do not change it to "". */ | |
774 | strcpy (dst, src); | |
125feee8 RS |
775 | #ifdef APOLLO |
776 | /* Handle // as root for apollo's. */ | |
777 | if ((slen > 2 && dst[slen - 1] == '/') | |
778 | || (slen > 1 && dst[0] != '/' && dst[slen - 1] == '/')) | |
779 | dst[slen - 1] = 0; | |
780 | #else | |
199607e4 | 781 | if (slen > 1 |
5e570b75 | 782 | && IS_DIRECTORY_SEP (dst[slen - 1]) |
4592782e RS |
783 | #ifdef DOS_NT |
784 | && !IS_ANY_SEP (dst[slen - 2]) | |
785 | #endif | |
786 | ) | |
570d7624 | 787 | dst[slen - 1] = 0; |
199607e4 RS |
788 | #endif |
789 | #ifdef DOS_NT | |
790 | CORRECT_DIR_SEPS (dst); | |
125feee8 | 791 | #endif |
570d7624 JB |
792 | return 1; |
793 | } | |
794 | ||
795 | DEFUN ("directory-file-name", Fdirectory_file_name, Sdirectory_file_name, | |
796 | 1, 1, 0, | |
3b7f6e60 EN |
797 | "Returns the file name of the directory named DIRECTORY.\n\ |
798 | This is the name of the file that holds the data for the directory DIRECTORY.\n\ | |
570d7624 JB |
799 | This operation exists because a directory is also a file, but its name as\n\ |
800 | a directory is different from its name as a file.\n\ | |
801 | In Unix-syntax, this function just removes the final slash.\n\ | |
802 | On VMS, given a VMS-syntax directory name such as \"[X.Y]\",\n\ | |
803 | it returns a file name such as \"[X]Y.DIR.1\".") | |
804 | (directory) | |
805 | Lisp_Object directory; | |
806 | { | |
807 | char *buf; | |
0bf2eed2 | 808 | Lisp_Object handler; |
570d7624 JB |
809 | |
810 | CHECK_STRING (directory, 0); | |
811 | ||
265a9e55 | 812 | if (NILP (directory)) |
570d7624 | 813 | return Qnil; |
0bf2eed2 RS |
814 | |
815 | /* If the file name has special constructs in it, | |
816 | call the corresponding file handler. */ | |
49307295 | 817 | handler = Ffind_file_name_handler (directory, Qdirectory_file_name); |
0bf2eed2 RS |
818 | if (!NILP (handler)) |
819 | return call2 (handler, Qdirectory_file_name, directory); | |
820 | ||
570d7624 JB |
821 | #ifdef VMS |
822 | /* 20 extra chars is insufficient for VMS, since we might perform a | |
823 | logical name translation. an equivalence string can be up to 255 | |
824 | chars long, so grab that much extra space... - sss */ | |
fc932ac6 | 825 | buf = (char *) alloca (STRING_BYTES (XSTRING (directory)) + 20 + 255); |
570d7624 | 826 | #else |
fc932ac6 | 827 | buf = (char *) alloca (STRING_BYTES (XSTRING (directory)) + 20); |
570d7624 JB |
828 | #endif |
829 | directory_file_name (XSTRING (directory)->data, buf); | |
830 | return build_string (buf); | |
831 | } | |
832 | ||
3ce839e4 RS |
833 | static char make_temp_name_tbl[64] = |
834 | { | |
835 | 'A','B','C','D','E','F','G','H', | |
836 | 'I','J','K','L','M','N','O','P', | |
837 | 'Q','R','S','T','U','V','W','X', | |
838 | 'Y','Z','a','b','c','d','e','f', | |
839 | 'g','h','i','j','k','l','m','n', | |
840 | 'o','p','q','r','s','t','u','v', | |
841 | 'w','x','y','z','0','1','2','3', | |
842 | '4','5','6','7','8','9','-','_' | |
843 | }; | |
cb613bb8 | 844 | |
3ce839e4 RS |
845 | static unsigned make_temp_name_count, make_temp_name_count_initialized_p; |
846 | ||
cb613bb8 GM |
847 | /* Value is a temporary file name starting with PREFIX, a string. |
848 | ||
849 | The Emacs process number forms part of the result, so there is | |
850 | no danger of generating a name being used by another process. | |
851 | In addition, this function makes an attempt to choose a name | |
852 | which has no existing file. To make this work, PREFIX should be | |
853 | an absolute file name. | |
854 | ||
855 | BASE64_P non-zero means add the pid as 3 characters in base64 | |
856 | encoding. In this case, 6 characters will be added to PREFIX to | |
857 | form the file name. Otherwise, if Emacs is running on a system | |
858 | with long file names, add the pid as a decimal number. | |
859 | ||
860 | This function signals an error if no unique file name could be | |
861 | generated. */ | |
862 | ||
863 | Lisp_Object | |
864 | make_temp_name (prefix, base64_p) | |
570d7624 | 865 | Lisp_Object prefix; |
cb613bb8 | 866 | int base64_p; |
570d7624 JB |
867 | { |
868 | Lisp_Object val; | |
3ce839e4 RS |
869 | int len; |
870 | int pid; | |
871 | unsigned char *p, *data; | |
872 | char pidbuf[20]; | |
873 | int pidlen; | |
cb613bb8 | 874 | |
3ce839e4 RS |
875 | CHECK_STRING (prefix, 0); |
876 | ||
877 | /* VAL is created by adding 6 characters to PREFIX. The first | |
878 | three are the PID of this process, in base 64, and the second | |
879 | three are incremented if the file already exists. This ensures | |
880 | 262144 unique file names per PID per PREFIX. */ | |
881 | ||
882 | pid = (int) getpid (); | |
883 | ||
cb613bb8 GM |
884 | if (base64_p) |
885 | { | |
886 | pidbuf[0] = make_temp_name_tbl[pid & 63], pid >>= 6; | |
887 | pidbuf[1] = make_temp_name_tbl[pid & 63], pid >>= 6; | |
888 | pidbuf[2] = make_temp_name_tbl[pid & 63], pid >>= 6; | |
889 | pidlen = 3; | |
890 | } | |
891 | else | |
892 | { | |
3ce839e4 | 893 | #ifdef HAVE_LONG_FILE_NAMES |
cb613bb8 GM |
894 | sprintf (pidbuf, "%d", pid); |
895 | pidlen = strlen (pidbuf); | |
3a3bfb18 | 896 | #else |
cb613bb8 GM |
897 | pidbuf[0] = make_temp_name_tbl[pid & 63], pid >>= 6; |
898 | pidbuf[1] = make_temp_name_tbl[pid & 63], pid >>= 6; | |
899 | pidbuf[2] = make_temp_name_tbl[pid & 63], pid >>= 6; | |
900 | pidlen = 3; | |
3ce839e4 | 901 | #endif |
cb613bb8 GM |
902 | } |
903 | ||
3ce839e4 RS |
904 | len = XSTRING (prefix)->size; |
905 | val = make_uninit_string (len + 3 + pidlen); | |
906 | data = XSTRING (val)->data; | |
907 | bcopy(XSTRING (prefix)->data, data, len); | |
908 | p = data + len; | |
909 | ||
910 | bcopy (pidbuf, p, pidlen); | |
911 | p += pidlen; | |
912 | ||
913 | /* Here we try to minimize useless stat'ing when this function is | |
914 | invoked many times successively with the same PREFIX. We achieve | |
915 | this by initializing count to a random value, and incrementing it | |
f6a492a9 RS |
916 | afterwards. |
917 | ||
918 | We don't want make-temp-name to be called while dumping, | |
919 | because then make_temp_name_count_initialized_p would get set | |
920 | and then make_temp_name_count would not be set when Emacs starts. */ | |
921 | ||
3ce839e4 RS |
922 | if (!make_temp_name_count_initialized_p) |
923 | { | |
924 | make_temp_name_count = (unsigned) time (NULL); | |
925 | make_temp_name_count_initialized_p = 1; | |
926 | } | |
927 | ||
928 | while (1) | |
929 | { | |
930 | struct stat ignored; | |
8a7777fc | 931 | unsigned num = make_temp_name_count; |
3ce839e4 RS |
932 | |
933 | p[0] = make_temp_name_tbl[num & 63], num >>= 6; | |
934 | p[1] = make_temp_name_tbl[num & 63], num >>= 6; | |
935 | p[2] = make_temp_name_tbl[num & 63], num >>= 6; | |
936 | ||
8a7777fc RS |
937 | /* Poor man's congruential RN generator. Replace with |
938 | ++make_temp_name_count for debugging. */ | |
939 | make_temp_name_count += 25229; | |
940 | make_temp_name_count %= 225307; | |
941 | ||
3ce839e4 RS |
942 | if (stat (data, &ignored) < 0) |
943 | { | |
944 | /* We want to return only if errno is ENOENT. */ | |
945 | if (errno == ENOENT) | |
946 | return val; | |
947 | else | |
948 | /* The error here is dubious, but there is little else we | |
949 | can do. The alternatives are to return nil, which is | |
950 | as bad as (and in many cases worse than) throwing the | |
951 | error, or to ignore the error, which will likely result | |
8a7777fc RS |
952 | in looping through 225307 stat's, which is not only |
953 | dog-slow, but also useless since it will fallback to | |
954 | the errow below, anyway. */ | |
9869bb0b | 955 | report_file_error ("Cannot create temporary name for prefix", |
3ce839e4 RS |
956 | Fcons (prefix, Qnil)); |
957 | /* not reached */ | |
958 | } | |
959 | } | |
960 | ||
961 | error ("Cannot create temporary name for prefix `%s'", | |
962 | XSTRING (prefix)->data); | |
963 | return Qnil; | |
570d7624 | 964 | } |
3ce839e4 | 965 | |
cb613bb8 GM |
966 | |
967 | DEFUN ("make-temp-name", Fmake_temp_name, Smake_temp_name, 1, 1, 0, | |
968 | "Generate temporary file name (string) starting with PREFIX (a string).\n\ | |
969 | The Emacs process number forms part of the result,\n\ | |
970 | so there is no danger of generating a name being used by another process.\n\ | |
971 | \n\ | |
972 | In addition, this function makes an attempt to choose a name\n\ | |
973 | which has no existing file. To make this work,\n\ | |
974 | PREFIX should be an absolute file name.\n\ | |
975 | \n\ | |
976 | There is a race condition between calling `make-temp-name' and creating the\n\ | |
977 | file which opens all kinds of security holes. For that reason, you should\n\ | |
978 | probably use `make-temp-file' instead.") | |
979 | (prefix) | |
980 | Lisp_Object prefix; | |
981 | { | |
982 | return make_temp_name (prefix, 0); | |
983 | } | |
984 | ||
985 | ||
570d7624 JB |
986 | \f |
987 | DEFUN ("expand-file-name", Fexpand_file_name, Sexpand_file_name, 1, 2, 0, | |
3b7f6e60 EN |
988 | "Convert filename NAME to absolute, and canonicalize it.\n\ |
989 | Second arg DEFAULT-DIRECTORY is directory to start with if NAME is relative\n\ | |
990 | (does not start with slash); if DEFAULT-DIRECTORY is nil or missing,\n\ | |
570d7624 | 991 | the current buffer's value of default-directory is used.\n\ |
199607e4 RS |
992 | File name components that are `.' are removed, and \n\ |
993 | so are file name components followed by `..', along with the `..' itself;\n\ | |
b72dea2a | 994 | note that these simplifications are done without checking the resulting\n\ |
199607e4 | 995 | file names in the file system.\n\ |
b72dea2a JB |
996 | An initial `~/' expands to your home directory.\n\ |
997 | An initial `~USER/' expands to USER's home directory.\n\ | |
570d7624 | 998 | See also the function `substitute-in-file-name'.") |
82330e7f | 999 | (name, default_directory) |
3b7f6e60 | 1000 | Lisp_Object name, default_directory; |
570d7624 JB |
1001 | { |
1002 | unsigned char *nm; | |
199607e4 | 1003 | |
570d7624 JB |
1004 | register unsigned char *newdir, *p, *o; |
1005 | int tlen; | |
1006 | unsigned char *target; | |
1007 | struct passwd *pw; | |
570d7624 JB |
1008 | #ifdef VMS |
1009 | unsigned char * colon = 0; | |
1010 | unsigned char * close = 0; | |
1011 | unsigned char * slash = 0; | |
1012 | unsigned char * brack = 0; | |
1013 | int lbrack = 0, rbrack = 0; | |
1014 | int dots = 0; | |
1015 | #endif /* VMS */ | |
5e570b75 | 1016 | #ifdef DOS_NT |
199607e4 | 1017 | int drive = 0; |
9a1dc3be | 1018 | int collapse_newdir = 1; |
f0f95d31 | 1019 | int is_escaped = 0; |
5e570b75 | 1020 | #endif /* DOS_NT */ |
199607e4 | 1021 | int length; |
0bf2eed2 | 1022 | Lisp_Object handler; |
199607e4 | 1023 | |
570d7624 JB |
1024 | CHECK_STRING (name, 0); |
1025 | ||
0bf2eed2 RS |
1026 | /* If the file name has special constructs in it, |
1027 | call the corresponding file handler. */ | |
49307295 | 1028 | handler = Ffind_file_name_handler (name, Qexpand_file_name); |
0bf2eed2 | 1029 | if (!NILP (handler)) |
3b7f6e60 | 1030 | return call3 (handler, Qexpand_file_name, name, default_directory); |
58fc9587 | 1031 | |
3b7f6e60 EN |
1032 | /* Use the buffer's default-directory if DEFAULT_DIRECTORY is omitted. */ |
1033 | if (NILP (default_directory)) | |
1034 | default_directory = current_buffer->directory; | |
82330e7f RS |
1035 | if (! STRINGP (default_directory)) |
1036 | default_directory = build_string ("/"); | |
58fc9587 | 1037 | |
3b7f6e60 | 1038 | if (!NILP (default_directory)) |
273e0829 | 1039 | { |
3b7f6e60 | 1040 | handler = Ffind_file_name_handler (default_directory, Qexpand_file_name); |
273e0829 | 1041 | if (!NILP (handler)) |
3b7f6e60 | 1042 | return call3 (handler, Qexpand_file_name, name, default_directory); |
273e0829 | 1043 | } |
0bf2eed2 | 1044 | |
3b7f6e60 | 1045 | o = XSTRING (default_directory)->data; |
5e570b75 | 1046 | |
3b7f6e60 | 1047 | /* Make sure DEFAULT_DIRECTORY is properly expanded. |
f14b1c68 | 1048 | It would be better to do this down below where we actually use |
3b7f6e60 | 1049 | default_directory. Unfortunately, calling Fexpand_file_name recursively |
f14b1c68 JB |
1050 | could invoke GC, and the strings might be relocated. This would |
1051 | be annoying because we have pointers into strings lying around | |
1052 | that would need adjusting, and people would add new pointers to | |
1053 | the code and forget to adjust them, resulting in intermittent bugs. | |
4ad827c5 RS |
1054 | Putting this call here avoids all that crud. |
1055 | ||
1056 | The EQ test avoids infinite recursion. */ | |
3b7f6e60 | 1057 | if (! NILP (default_directory) && !EQ (default_directory, name) |
199607e4 RS |
1058 | /* Save time in some common cases - as long as default_directory |
1059 | is not relative, it can be canonicalized with name below (if it | |
1060 | is needed at all) without requiring it to be expanded now. */ | |
01937013 | 1061 | #ifdef DOS_NT |
199607e4 | 1062 | /* Detect MSDOS file names with drive specifiers. */ |
f0f95d31 | 1063 | && ! (IS_DRIVE (o[0]) && IS_DEVICE_SEP (o[1]) && IS_DIRECTORY_SEP (o[2])) |
199607e4 RS |
1064 | #ifdef WINDOWSNT |
1065 | /* Detect Windows file names in UNC format. */ | |
1066 | && ! (IS_DIRECTORY_SEP (o[0]) && IS_DIRECTORY_SEP (o[1])) | |
01937013 | 1067 | #endif |
199607e4 RS |
1068 | #else /* not DOS_NT */ |
1069 | /* Detect Unix absolute file names (/... alone is not absolute on | |
1070 | DOS or Windows). */ | |
1071 | && ! (IS_DIRECTORY_SEP (o[0])) | |
1072 | #endif /* not DOS_NT */ | |
1073 | ) | |
f14b1c68 JB |
1074 | { |
1075 | struct gcpro gcpro1; | |
1076 | ||
1077 | GCPRO1 (name); | |
3b7f6e60 | 1078 | default_directory = Fexpand_file_name (default_directory, Qnil); |
f14b1c68 JB |
1079 | UNGCPRO; |
1080 | } | |
1081 | ||
570d7624 JB |
1082 | #ifdef VMS |
1083 | /* Filenames on VMS are always upper case. */ | |
1084 | name = Fupcase (name); | |
1085 | #endif | |
4c3c22f3 RS |
1086 | #ifdef FILE_SYSTEM_CASE |
1087 | name = FILE_SYSTEM_CASE (name); | |
1088 | #endif | |
570d7624 JB |
1089 | |
1090 | nm = XSTRING (name)->data; | |
a5a1cc06 | 1091 | |
5e570b75 | 1092 | #ifdef DOS_NT |
199607e4 RS |
1093 | /* We will force directory separators to be either all \ or /, so make |
1094 | a local copy to modify, even if there ends up being no change. */ | |
1095 | nm = strcpy (alloca (strlen (nm) + 1), nm); | |
1096 | ||
f0f95d31 RS |
1097 | /* Note if special escape prefix is present, but remove for now. */ |
1098 | if (nm[0] == '/' && nm[1] == ':') | |
1099 | { | |
1100 | is_escaped = 1; | |
1101 | nm += 2; | |
1102 | } | |
1103 | ||
199607e4 | 1104 | /* Find and remove drive specifier if present; this makes nm absolute |
f0f95d31 RS |
1105 | even if the rest of the name appears to be relative. Only look for |
1106 | drive specifier at the beginning. */ | |
1107 | if (IS_DRIVE (nm[0]) && IS_DEVICE_SEP (nm[1])) | |
1108 | { | |
1109 | drive = nm[0]; | |
1110 | nm += 2; | |
1111 | } | |
bb1ff1f4 GV |
1112 | |
1113 | #ifdef WINDOWSNT | |
1114 | /* If we see "c://somedir", we want to strip the first slash after the | |
1115 | colon when stripping the drive letter. Otherwise, this expands to | |
1116 | "//somedir". */ | |
1117 | if (drive && IS_DIRECTORY_SEP (nm[0]) && IS_DIRECTORY_SEP (nm[1])) | |
1118 | nm++; | |
1119 | #endif /* WINDOWSNT */ | |
5e570b75 | 1120 | #endif /* DOS_NT */ |
4c3c22f3 | 1121 | |
199607e4 RS |
1122 | #ifdef WINDOWSNT |
1123 | /* Discard any previous drive specifier if nm is now in UNC format. */ | |
1124 | if (IS_DIRECTORY_SEP (nm[0]) && IS_DIRECTORY_SEP (nm[1])) | |
1125 | { | |
1126 | drive = 0; | |
1127 | } | |
1128 | #endif | |
1129 | ||
214378ec GM |
1130 | /* If nm is absolute, look for `/./' or `/../' or `//''sequences; if |
1131 | none are found, we can probably return right away. We will avoid | |
1132 | allocating a new string if name is already fully expanded. */ | |
570d7624 | 1133 | if ( |
5e570b75 | 1134 | IS_DIRECTORY_SEP (nm[0]) |
199607e4 | 1135 | #ifdef MSDOS |
f0f95d31 | 1136 | && drive && !is_escaped |
199607e4 RS |
1137 | #endif |
1138 | #ifdef WINDOWSNT | |
f0f95d31 | 1139 | && (drive || IS_DIRECTORY_SEP (nm[1])) && !is_escaped |
199607e4 | 1140 | #endif |
570d7624 JB |
1141 | #ifdef VMS |
1142 | || index (nm, ':') | |
1143 | #endif /* VMS */ | |
1144 | ) | |
1145 | { | |
f14b1c68 JB |
1146 | /* If it turns out that the filename we want to return is just a |
1147 | suffix of FILENAME, we don't need to go through and edit | |
1148 | things; we just need to construct a new string using data | |
1149 | starting at the middle of FILENAME. If we set lose to a | |
1150 | non-zero value, that means we've discovered that we can't do | |
1151 | that cool trick. */ | |
1152 | int lose = 0; | |
1153 | ||
570d7624 | 1154 | p = nm; |
570d7624 JB |
1155 | while (*p) |
1156 | { | |
199607e4 | 1157 | /* Since we know the name is absolute, we can assume that each |
c77d647e JB |
1158 | element starts with a "/". */ |
1159 | ||
c77d647e | 1160 | /* "." and ".." are hairy. */ |
5e570b75 | 1161 | if (IS_DIRECTORY_SEP (p[0]) |
c77d647e | 1162 | && p[1] == '.' |
5e570b75 | 1163 | && (IS_DIRECTORY_SEP (p[2]) |
c77d647e | 1164 | || p[2] == 0 |
5e570b75 | 1165 | || (p[2] == '.' && (IS_DIRECTORY_SEP (p[3]) |
c77d647e | 1166 | || p[3] == 0)))) |
570d7624 | 1167 | lose = 1; |
214378ec GM |
1168 | /* We want to replace multiple `/' in a row with a single |
1169 | slash. */ | |
1170 | else if (p > nm | |
1171 | && IS_DIRECTORY_SEP (p[0]) | |
1172 | && IS_DIRECTORY_SEP (p[1])) | |
1173 | lose = 1; | |
1174 | ||
570d7624 JB |
1175 | #ifdef VMS |
1176 | if (p[0] == '\\') | |
1177 | lose = 1; | |
1178 | if (p[0] == '/') { | |
1179 | /* if dev:[dir]/, move nm to / */ | |
1180 | if (!slash && p > nm && (brack || colon)) { | |
1181 | nm = (brack ? brack + 1 : colon + 1); | |
1182 | lbrack = rbrack = 0; | |
1183 | brack = 0; | |
1184 | colon = 0; | |
1185 | } | |
1186 | slash = p; | |
1187 | } | |
1188 | if (p[0] == '-') | |
1189 | #ifndef VMS4_4 | |
1190 | /* VMS pre V4.4,convert '-'s in filenames. */ | |
1191 | if (lbrack == rbrack) | |
1192 | { | |
5e570b75 | 1193 | if (dots < 2) /* this is to allow negative version numbers */ |
570d7624 JB |
1194 | p[0] = '_'; |
1195 | } | |
1196 | else | |
1197 | #endif /* VMS4_4 */ | |
1198 | if (lbrack > rbrack && | |
1199 | ((p[-1] == '.' || p[-1] == '[' || p[-1] == '<') && | |
1200 | (p[1] == '.' || p[1] == ']' || p[1] == '>'))) | |
1201 | lose = 1; | |
1202 | #ifndef VMS4_4 | |
1203 | else | |
1204 | p[0] = '_'; | |
1205 | #endif /* VMS4_4 */ | |
1206 | /* count open brackets, reset close bracket pointer */ | |
1207 | if (p[0] == '[' || p[0] == '<') | |
1208 | lbrack++, brack = 0; | |
1209 | /* count close brackets, set close bracket pointer */ | |
1210 | if (p[0] == ']' || p[0] == '>') | |
1211 | rbrack++, brack = p; | |
1212 | /* detect ][ or >< */ | |
1213 | if ((p[0] == ']' || p[0] == '>') && (p[1] == '[' || p[1] == '<')) | |
1214 | lose = 1; | |
1215 | if ((p[0] == ':' || p[0] == ']' || p[0] == '>') && p[1] == '~') | |
1216 | nm = p + 1, lose = 1; | |
1217 | if (p[0] == ':' && (colon || slash)) | |
1218 | /* if dev1:[dir]dev2:, move nm to dev2: */ | |
1219 | if (brack) | |
1220 | { | |
1221 | nm = brack + 1; | |
1222 | brack = 0; | |
1223 | } | |
199607e4 | 1224 | /* if /name/dev:, move nm to dev: */ |
570d7624 JB |
1225 | else if (slash) |
1226 | nm = slash + 1; | |
1227 | /* if node::dev:, move colon following dev */ | |
1228 | else if (colon && colon[-1] == ':') | |
1229 | colon = p; | |
1230 | /* if dev1:dev2:, move nm to dev2: */ | |
1231 | else if (colon && colon[-1] != ':') | |
1232 | { | |
1233 | nm = colon + 1; | |
1234 | colon = 0; | |
1235 | } | |
1236 | if (p[0] == ':' && !colon) | |
1237 | { | |
1238 | if (p[1] == ':') | |
1239 | p++; | |
1240 | colon = p; | |
1241 | } | |
1242 | if (lbrack == rbrack) | |
1243 | if (p[0] == ';') | |
1244 | dots = 2; | |
1245 | else if (p[0] == '.') | |
1246 | dots++; | |
1247 | #endif /* VMS */ | |
1248 | p++; | |
1249 | } | |
1250 | if (!lose) | |
1251 | { | |
1252 | #ifdef VMS | |
1253 | if (index (nm, '/')) | |
1254 | return build_string (sys_translate_unix (nm)); | |
1255 | #endif /* VMS */ | |
199607e4 RS |
1256 | #ifdef DOS_NT |
1257 | /* Make sure directories are all separated with / or \ as | |
1258 | desired, but avoid allocation of a new string when not | |
1259 | required. */ | |
1260 | CORRECT_DIR_SEPS (nm); | |
1261 | #ifdef WINDOWSNT | |
1262 | if (IS_DIRECTORY_SEP (nm[1])) | |
1263 | { | |
1264 | if (strcmp (nm, XSTRING (name)->data) != 0) | |
1265 | name = build_string (nm); | |
1266 | } | |
1267 | else | |
1268 | #endif | |
1269 | /* drive must be set, so this is okay */ | |
1270 | if (strcmp (nm - 2, XSTRING (name)->data) != 0) | |
1271 | { | |
1272 | name = make_string (nm - 2, p - nm + 2); | |
f94988a7 | 1273 | XSTRING (name)->data[0] = DRIVE_LETTER (drive); |
199607e4 RS |
1274 | XSTRING (name)->data[1] = ':'; |
1275 | } | |
1276 | return name; | |
1277 | #else /* not DOS_NT */ | |
570d7624 JB |
1278 | if (nm == XSTRING (name)->data) |
1279 | return name; | |
1280 | return build_string (nm); | |
5e570b75 | 1281 | #endif /* not DOS_NT */ |
570d7624 JB |
1282 | } |
1283 | } | |
1284 | ||
199607e4 RS |
1285 | /* At this point, nm might or might not be an absolute file name. We |
1286 | need to expand ~ or ~user if present, otherwise prefix nm with | |
1287 | default_directory if nm is not absolute, and finally collapse /./ | |
1288 | and /foo/../ sequences. | |
1289 | ||
1290 | We set newdir to be the appropriate prefix if one is needed: | |
1291 | - the relevant user directory if nm starts with ~ or ~user | |
1292 | - the specified drive's working dir (DOS/NT only) if nm does not | |
1293 | start with / | |
1294 | - the value of default_directory. | |
1295 | ||
1296 | Note that these prefixes are not guaranteed to be absolute (except | |
1297 | for the working dir of a drive). Therefore, to ensure we always | |
1298 | return an absolute name, if the final prefix is not absolute we | |
1299 | append it to the current working directory. */ | |
570d7624 JB |
1300 | |
1301 | newdir = 0; | |
1302 | ||
1303 | if (nm[0] == '~') /* prefix ~ */ | |
c77d647e | 1304 | { |
5e570b75 | 1305 | if (IS_DIRECTORY_SEP (nm[1]) |
570d7624 | 1306 | #ifdef VMS |
c77d647e | 1307 | || nm[1] == ':' |
5e570b75 | 1308 | #endif /* VMS */ |
c77d647e JB |
1309 | || nm[1] == 0) /* ~ by itself */ |
1310 | { | |
1311 | if (!(newdir = (unsigned char *) egetenv ("HOME"))) | |
1312 | newdir = (unsigned char *) ""; | |
199607e4 | 1313 | nm++; |
5e570b75 | 1314 | #ifdef DOS_NT |
9a1dc3be | 1315 | collapse_newdir = 0; |
4c3c22f3 | 1316 | #endif |
570d7624 | 1317 | #ifdef VMS |
c77d647e | 1318 | nm++; /* Don't leave the slash in nm. */ |
5e570b75 | 1319 | #endif /* VMS */ |
c77d647e JB |
1320 | } |
1321 | else /* ~user/filename */ | |
1322 | { | |
5e570b75 | 1323 | for (p = nm; *p && (!IS_DIRECTORY_SEP (*p) |
570d7624 | 1324 | #ifdef VMS |
c77d647e | 1325 | && *p != ':' |
5e570b75 | 1326 | #endif /* VMS */ |
c77d647e JB |
1327 | ); p++); |
1328 | o = (unsigned char *) alloca (p - nm + 1); | |
1329 | bcopy ((char *) nm, o, p - nm); | |
1330 | o [p - nm] = 0; | |
1331 | ||
1332 | pw = (struct passwd *) getpwnam (o + 1); | |
1333 | if (pw) | |
1334 | { | |
1335 | newdir = (unsigned char *) pw -> pw_dir; | |
570d7624 | 1336 | #ifdef VMS |
c77d647e | 1337 | nm = p + 1; /* skip the terminator */ |
570d7624 | 1338 | #else |
c77d647e | 1339 | nm = p; |
199607e4 | 1340 | #ifdef DOS_NT |
9a1dc3be | 1341 | collapse_newdir = 0; |
199607e4 | 1342 | #endif |
5e570b75 | 1343 | #endif /* VMS */ |
c77d647e | 1344 | } |
e5d77022 | 1345 | |
c77d647e JB |
1346 | /* If we don't find a user of that name, leave the name |
1347 | unchanged; don't move nm forward to p. */ | |
1348 | } | |
1349 | } | |
570d7624 | 1350 | |
5e570b75 | 1351 | #ifdef DOS_NT |
199607e4 RS |
1352 | /* On DOS and Windows, nm is absolute if a drive name was specified; |
1353 | use the drive's current directory as the prefix if needed. */ | |
1354 | if (!newdir && drive) | |
1355 | { | |
1356 | /* Get default directory if needed to make nm absolute. */ | |
1357 | if (!IS_DIRECTORY_SEP (nm[0])) | |
1358 | { | |
1359 | newdir = alloca (MAXPATHLEN + 1); | |
1360 | if (!getdefdir (toupper (drive) - 'A' + 1, newdir)) | |
1361 | newdir = NULL; | |
1362 | } | |
1363 | if (!newdir) | |
1364 | { | |
1365 | /* Either nm starts with /, or drive isn't mounted. */ | |
1366 | newdir = alloca (4); | |
f94988a7 | 1367 | newdir[0] = DRIVE_LETTER (drive); |
199607e4 RS |
1368 | newdir[1] = ':'; |
1369 | newdir[2] = '/'; | |
1370 | newdir[3] = 0; | |
1371 | } | |
1372 | } | |
5e570b75 | 1373 | #endif /* DOS_NT */ |
199607e4 RS |
1374 | |
1375 | /* Finally, if no prefix has been specified and nm is not absolute, | |
1376 | then it must be expanded relative to default_directory. */ | |
1377 | ||
34097368 | 1378 | if (1 |
199607e4 RS |
1379 | #ifndef DOS_NT |
1380 | /* /... alone is not absolute on DOS and Windows. */ | |
34097368 | 1381 | && !IS_DIRECTORY_SEP (nm[0]) |
199607e4 RS |
1382 | #endif |
1383 | #ifdef WINDOWSNT | |
34097368 | 1384 | && !(IS_DIRECTORY_SEP (nm[0]) && IS_DIRECTORY_SEP (nm[1])) |
199607e4 RS |
1385 | #endif |
1386 | #ifdef VMS | |
1387 | && !index (nm, ':') | |
1388 | #endif | |
570d7624 JB |
1389 | && !newdir) |
1390 | { | |
3b7f6e60 | 1391 | newdir = XSTRING (default_directory)->data; |
f0f95d31 RS |
1392 | #ifdef DOS_NT |
1393 | /* Note if special escape prefix is present, but remove for now. */ | |
1394 | if (newdir[0] == '/' && newdir[1] == ':') | |
1395 | { | |
1396 | is_escaped = 1; | |
1397 | newdir += 2; | |
1398 | } | |
1399 | #endif | |
570d7624 JB |
1400 | } |
1401 | ||
5e570b75 | 1402 | #ifdef DOS_NT |
199607e4 RS |
1403 | if (newdir) |
1404 | { | |
1405 | /* First ensure newdir is an absolute name. */ | |
1406 | if ( | |
1407 | /* Detect MSDOS file names with drive specifiers. */ | |
1408 | ! (IS_DRIVE (newdir[0]) | |
1409 | && IS_DEVICE_SEP (newdir[1]) && IS_DIRECTORY_SEP (newdir[2])) | |
1410 | #ifdef WINDOWSNT | |
1411 | /* Detect Windows file names in UNC format. */ | |
1412 | && ! (IS_DIRECTORY_SEP (newdir[0]) && IS_DIRECTORY_SEP (newdir[1])) | |
1413 | #endif | |
1414 | ) | |
1415 | { | |
1416 | /* Effectively, let newdir be (expand-file-name newdir cwd). | |
1417 | Because of the admonition against calling expand-file-name | |
1418 | when we have pointers into lisp strings, we accomplish this | |
1419 | indirectly by prepending newdir to nm if necessary, and using | |
1420 | cwd (or the wd of newdir's drive) as the new newdir. */ | |
1421 | ||
1422 | if (IS_DRIVE (newdir[0]) && newdir[1] == ':') | |
1423 | { | |
1424 | drive = newdir[0]; | |
1425 | newdir += 2; | |
1426 | } | |
1427 | if (!IS_DIRECTORY_SEP (nm[0])) | |
1428 | { | |
1429 | char * tmp = alloca (strlen (newdir) + strlen (nm) + 2); | |
1430 | file_name_as_directory (tmp, newdir); | |
1431 | strcat (tmp, nm); | |
1432 | nm = tmp; | |
1433 | } | |
1434 | newdir = alloca (MAXPATHLEN + 1); | |
1435 | if (drive) | |
1436 | { | |
1437 | if (!getdefdir (toupper (drive) - 'A' + 1, newdir)) | |
1438 | newdir = "/"; | |
1439 | } | |
1440 | else | |
1441 | getwd (newdir); | |
1442 | } | |
1443 | ||
1444 | /* Strip off drive name from prefix, if present. */ | |
1445 | if (IS_DRIVE (newdir[0]) && newdir[1] == ':') | |
1446 | { | |
1447 | drive = newdir[0]; | |
1448 | newdir += 2; | |
1449 | } | |
1450 | ||
1451 | /* Keep only a prefix from newdir if nm starts with slash | |
82330e7f | 1452 | (//server/share for UNC, nothing otherwise). */ |
9a1dc3be | 1453 | if (IS_DIRECTORY_SEP (nm[0]) && collapse_newdir) |
199607e4 RS |
1454 | { |
1455 | #ifdef WINDOWSNT | |
1456 | if (IS_DIRECTORY_SEP (newdir[0]) && IS_DIRECTORY_SEP (newdir[1])) | |
1457 | { | |
1458 | newdir = strcpy (alloca (strlen (newdir) + 1), newdir); | |
1459 | p = newdir + 2; | |
1460 | while (*p && !IS_DIRECTORY_SEP (*p)) p++; | |
1461 | p++; | |
1462 | while (*p && !IS_DIRECTORY_SEP (*p)) p++; | |
1463 | *p = 0; | |
1464 | } | |
1465 | else | |
1466 | #endif | |
1467 | newdir = ""; | |
1468 | } | |
1469 | } | |
5e570b75 | 1470 | #endif /* DOS_NT */ |
199607e4 RS |
1471 | |
1472 | if (newdir) | |
bfb61299 | 1473 | { |
57676091 | 1474 | /* Get rid of any slash at the end of newdir, unless newdir is |
f0f95d31 | 1475 | just / or // (an incomplete UNC name). */ |
199607e4 | 1476 | length = strlen (newdir); |
f0f95d31 | 1477 | if (length > 1 && IS_DIRECTORY_SEP (newdir[length - 1]) |
57676091 RS |
1478 | #ifdef WINDOWSNT |
1479 | && !(length == 2 && IS_DIRECTORY_SEP (newdir[0])) | |
1480 | #endif | |
1481 | ) | |
bfb61299 JB |
1482 | { |
1483 | unsigned char *temp = (unsigned char *) alloca (length); | |
1484 | bcopy (newdir, temp, length - 1); | |
1485 | temp[length - 1] = 0; | |
1486 | newdir = temp; | |
1487 | } | |
1488 | tlen = length + 1; | |
1489 | } | |
1490 | else | |
1491 | tlen = 0; | |
570d7624 | 1492 | |
bfb61299 JB |
1493 | /* Now concatenate the directory and name to new space in the stack frame */ |
1494 | tlen += strlen (nm) + 1; | |
5e570b75 | 1495 | #ifdef DOS_NT |
f0f95d31 RS |
1496 | /* Reserve space for drive specifier and escape prefix, since either |
1497 | or both may need to be inserted. (The Microsoft x86 compiler | |
5e570b75 | 1498 | produces incorrect code if the following two lines are combined.) */ |
f0f95d31 RS |
1499 | target = (unsigned char *) alloca (tlen + 4); |
1500 | target += 4; | |
5e570b75 | 1501 | #else /* not DOS_NT */ |
570d7624 | 1502 | target = (unsigned char *) alloca (tlen); |
5e570b75 | 1503 | #endif /* not DOS_NT */ |
570d7624 JB |
1504 | *target = 0; |
1505 | ||
1506 | if (newdir) | |
1507 | { | |
1508 | #ifndef VMS | |
5e570b75 | 1509 | if (nm[0] == 0 || IS_DIRECTORY_SEP (nm[0])) |
f5321b5c | 1510 | { |
3ea2d8b2 | 1511 | #ifdef DOS_NT |
f5321b5c RS |
1512 | /* If newdir is effectively "C:/", then the drive letter will have |
1513 | been stripped and newdir will be "/". Concatenating with an | |
1514 | absolute directory in nm produces "//", which will then be | |
1515 | incorrectly treated as a network share. Ignore newdir in | |
1516 | this case (keeping the drive letter). */ | |
1517 | if (!(drive && nm[0] && IS_DIRECTORY_SEP (newdir[0]) | |
1518 | && newdir[1] == '\0')) | |
1519 | #endif | |
1520 | strcpy (target, newdir); | |
1521 | } | |
570d7624 JB |
1522 | else |
1523 | #endif | |
c77d647e | 1524 | file_name_as_directory (target, newdir); |
570d7624 JB |
1525 | } |
1526 | ||
1527 | strcat (target, nm); | |
1528 | #ifdef VMS | |
1529 | if (index (target, '/')) | |
1530 | strcpy (target, sys_translate_unix (target)); | |
1531 | #endif /* VMS */ | |
1532 | ||
199607e4 RS |
1533 | /* ASSERT (IS_DIRECTORY_SEP (target[0])) if not VMS */ |
1534 | ||
214378ec GM |
1535 | /* Now canonicalize by removing `//', `/.' and `/foo/..' if they |
1536 | appear. */ | |
570d7624 JB |
1537 | |
1538 | p = target; | |
1539 | o = target; | |
1540 | ||
1541 | while (*p) | |
1542 | { | |
1543 | #ifdef VMS | |
1544 | if (*p != ']' && *p != '>' && *p != '-') | |
1545 | { | |
1546 | if (*p == '\\') | |
1547 | p++; | |
1548 | *o++ = *p++; | |
1549 | } | |
1550 | else if ((p[0] == ']' || p[0] == '>') && p[0] == p[1] + 2) | |
1551 | /* brackets are offset from each other by 2 */ | |
1552 | { | |
1553 | p += 2; | |
1554 | if (*p != '.' && *p != '-' && o[-1] != '.') | |
1555 | /* convert [foo][bar] to [bar] */ | |
1556 | while (o[-1] != '[' && o[-1] != '<') | |
1557 | o--; | |
1558 | else if (*p == '-' && *o != '.') | |
1559 | *--p = '.'; | |
1560 | } | |
1561 | else if (p[0] == '-' && o[-1] == '.' && | |
1562 | (p[1] == '.' || p[1] == ']' || p[1] == '>')) | |
1563 | /* flush .foo.- ; leave - if stopped by '[' or '<' */ | |
1564 | { | |
1565 | do | |
1566 | o--; | |
1567 | while (o[-1] != '.' && o[-1] != '[' && o[-1] != '<'); | |
5e570b75 | 1568 | if (p[1] == '.') /* foo.-.bar ==> bar. */ |
570d7624 JB |
1569 | p += 2; |
1570 | else if (o[-1] == '.') /* '.foo.-]' ==> ']' */ | |
1571 | p++, o--; | |
1572 | /* else [foo.-] ==> [-] */ | |
1573 | } | |
1574 | else | |
1575 | { | |
1576 | #ifndef VMS4_4 | |
1577 | if (*p == '-' && | |
1578 | o[-1] != '[' && o[-1] != '<' && o[-1] != '.' && | |
1579 | p[1] != ']' && p[1] != '>' && p[1] != '.') | |
1580 | *p = '_'; | |
1581 | #endif /* VMS4_4 */ | |
1582 | *o++ = *p++; | |
1583 | } | |
1584 | #else /* not VMS */ | |
5e570b75 RS |
1585 | if (!IS_DIRECTORY_SEP (*p)) |
1586 | { | |
570d7624 JB |
1587 | *o++ = *p++; |
1588 | } | |
5e570b75 | 1589 | else if (IS_DIRECTORY_SEP (p[0]) |
c77d647e | 1590 | && p[1] == '.' |
5e570b75 | 1591 | && (IS_DIRECTORY_SEP (p[2]) |
c77d647e JB |
1592 | || p[2] == 0)) |
1593 | { | |
1594 | /* If "/." is the entire filename, keep the "/". Otherwise, | |
1595 | just delete the whole "/.". */ | |
1596 | if (o == target && p[2] == '\0') | |
1597 | *o++ = *p; | |
1598 | p += 2; | |
1599 | } | |
c0fa5a0b | 1600 | else if (IS_DIRECTORY_SEP (p[0]) && p[1] == '.' && p[2] == '.' |
570d7624 JB |
1601 | /* `/../' is the "superroot" on certain file systems. */ |
1602 | && o != target | |
5e570b75 | 1603 | && (IS_DIRECTORY_SEP (p[3]) || p[3] == 0)) |
570d7624 | 1604 | { |
5e570b75 | 1605 | while (o != target && (--o) && !IS_DIRECTORY_SEP (*o)) |
570d7624 | 1606 | ; |
795de720 RS |
1607 | /* Keep initial / only if this is the whole name. */ |
1608 | if (o == target && IS_ANY_SEP (*o) && p[3] == 0) | |
51b1d12e | 1609 | ++o; |
570d7624 JB |
1610 | p += 3; |
1611 | } | |
214378ec GM |
1612 | else if (p > target |
1613 | && IS_DIRECTORY_SEP (p[0]) && IS_DIRECTORY_SEP (p[1])) | |
1614 | { | |
1615 | /* Collapse multiple `/' in a row. */ | |
1616 | *o++ = *p++; | |
1617 | while (IS_DIRECTORY_SEP (*p)) | |
1618 | ++p; | |
1619 | } | |
570d7624 | 1620 | else |
5e570b75 | 1621 | { |
570d7624 JB |
1622 | *o++ = *p++; |
1623 | } | |
1624 | #endif /* not VMS */ | |
1625 | } | |
1626 | ||
5e570b75 | 1627 | #ifdef DOS_NT |
199607e4 | 1628 | /* At last, set drive name. */ |
5e570b75 | 1629 | #ifdef WINDOWSNT |
199607e4 RS |
1630 | /* Except for network file name. */ |
1631 | if (!(IS_DIRECTORY_SEP (target[0]) && IS_DIRECTORY_SEP (target[1]))) | |
5e570b75 | 1632 | #endif /* WINDOWSNT */ |
4c3c22f3 | 1633 | { |
199607e4 | 1634 | if (!drive) abort (); |
4c3c22f3 | 1635 | target -= 2; |
f94988a7 | 1636 | target[0] = DRIVE_LETTER (drive); |
4c3c22f3 RS |
1637 | target[1] = ':'; |
1638 | } | |
f0f95d31 RS |
1639 | /* Reinsert the escape prefix if required. */ |
1640 | if (is_escaped) | |
1641 | { | |
1642 | target -= 2; | |
1643 | target[0] = '/'; | |
1644 | target[1] = ':'; | |
1645 | } | |
199607e4 | 1646 | CORRECT_DIR_SEPS (target); |
5e570b75 | 1647 | #endif /* DOS_NT */ |
4c3c22f3 | 1648 | |
570d7624 JB |
1649 | return make_string (target, o - target); |
1650 | } | |
5e570b75 | 1651 | |
570d7624 | 1652 | #if 0 |
5e570b75 | 1653 | /* Changed this DEFUN to a DEAFUN, so as not to confuse `make-docfile'. */ |
e5d77022 | 1654 | DEAFUN ("expand-file-name", Fexpand_file_name, Sexpand_file_name, 1, 2, 0, |
570d7624 JB |
1655 | "Convert FILENAME to absolute, and canonicalize it.\n\ |
1656 | Second arg DEFAULT is directory to start with if FILENAME is relative\n\ | |
1657 | (does not start with slash); if DEFAULT is nil or missing,\n\ | |
1658 | the current buffer's value of default-directory is used.\n\ | |
1659 | Filenames containing `.' or `..' as components are simplified;\n\ | |
1660 | initial `~/' expands to your home directory.\n\ | |
1661 | See also the function `substitute-in-file-name'.") | |
1662 | (name, defalt) | |
1663 | Lisp_Object name, defalt; | |
1664 | { | |
1665 | unsigned char *nm; | |
199607e4 | 1666 | |
570d7624 JB |
1667 | register unsigned char *newdir, *p, *o; |
1668 | int tlen; | |
1669 | unsigned char *target; | |
1670 | struct passwd *pw; | |
1671 | int lose; | |
1672 | #ifdef VMS | |
1673 | unsigned char * colon = 0; | |
1674 | unsigned char * close = 0; | |
1675 | unsigned char * slash = 0; | |
1676 | unsigned char * brack = 0; | |
1677 | int lbrack = 0, rbrack = 0; | |
1678 | int dots = 0; | |
1679 | #endif /* VMS */ | |
199607e4 | 1680 | |
570d7624 JB |
1681 | CHECK_STRING (name, 0); |
1682 | ||
1683 | #ifdef VMS | |
1684 | /* Filenames on VMS are always upper case. */ | |
1685 | name = Fupcase (name); | |
1686 | #endif | |
1687 | ||
1688 | nm = XSTRING (name)->data; | |
199607e4 | 1689 | |
570d7624 | 1690 | /* If nm is absolute, flush ...// and detect /./ and /../. |
82330e7f | 1691 | If no /./ or /../ we can return right away. */ |
570d7624 JB |
1692 | if ( |
1693 | nm[0] == '/' | |
1694 | #ifdef VMS | |
1695 | || index (nm, ':') | |
1696 | #endif /* VMS */ | |
1697 | ) | |
1698 | { | |
1699 | p = nm; | |
1700 | lose = 0; | |
1701 | while (*p) | |
1702 | { | |
1703 | if (p[0] == '/' && p[1] == '/' | |
1704 | #ifdef APOLLO | |
82330e7f | 1705 | /* // at start of filename is meaningful on Apollo system. */ |
570d7624 JB |
1706 | && nm != p |
1707 | #endif /* APOLLO */ | |
1708 | ) | |
1709 | nm = p + 1; | |
1710 | if (p[0] == '/' && p[1] == '~') | |
1711 | nm = p + 1, lose = 1; | |
1712 | if (p[0] == '/' && p[1] == '.' | |
1713 | && (p[2] == '/' || p[2] == 0 | |
1714 | || (p[2] == '.' && (p[3] == '/' || p[3] == 0)))) | |
1715 | lose = 1; | |
1716 | #ifdef VMS | |
1717 | if (p[0] == '\\') | |
1718 | lose = 1; | |
1719 | if (p[0] == '/') { | |
1720 | /* if dev:[dir]/, move nm to / */ | |
1721 | if (!slash && p > nm && (brack || colon)) { | |
1722 | nm = (brack ? brack + 1 : colon + 1); | |
1723 | lbrack = rbrack = 0; | |
1724 | brack = 0; | |
1725 | colon = 0; | |
1726 | } | |
1727 | slash = p; | |
1728 | } | |
1729 | if (p[0] == '-') | |
1730 | #ifndef VMS4_4 | |
1731 | /* VMS pre V4.4,convert '-'s in filenames. */ | |
1732 | if (lbrack == rbrack) | |
1733 | { | |
5e570b75 | 1734 | if (dots < 2) /* this is to allow negative version numbers */ |
570d7624 JB |
1735 | p[0] = '_'; |
1736 | } | |
1737 | else | |
1738 | #endif /* VMS4_4 */ | |
1739 | if (lbrack > rbrack && | |
1740 | ((p[-1] == '.' || p[-1] == '[' || p[-1] == '<') && | |
1741 | (p[1] == '.' || p[1] == ']' || p[1] == '>'))) | |
1742 | lose = 1; | |
1743 | #ifndef VMS4_4 | |
1744 | else | |
1745 | p[0] = '_'; | |
1746 | #endif /* VMS4_4 */ | |
1747 | /* count open brackets, reset close bracket pointer */ | |
1748 | if (p[0] == '[' || p[0] == '<') | |
1749 | lbrack++, brack = 0; | |
1750 | /* count close brackets, set close bracket pointer */ | |
1751 | if (p[0] == ']' || p[0] == '>') | |
1752 | rbrack++, brack = p; | |
1753 | /* detect ][ or >< */ | |
1754 | if ((p[0] == ']' || p[0] == '>') && (p[1] == '[' || p[1] == '<')) | |
1755 | lose = 1; | |
1756 | if ((p[0] == ':' || p[0] == ']' || p[0] == '>') && p[1] == '~') | |
1757 | nm = p + 1, lose = 1; | |
1758 | if (p[0] == ':' && (colon || slash)) | |
1759 | /* if dev1:[dir]dev2:, move nm to dev2: */ | |
1760 | if (brack) | |
1761 | { | |
1762 | nm = brack + 1; | |
1763 | brack = 0; | |
1764 | } | |
199607e4 | 1765 | /* If /name/dev:, move nm to dev: */ |
570d7624 JB |
1766 | else if (slash) |
1767 | nm = slash + 1; | |
199607e4 | 1768 | /* If node::dev:, move colon following dev */ |
570d7624 JB |
1769 | else if (colon && colon[-1] == ':') |
1770 | colon = p; | |
199607e4 | 1771 | /* If dev1:dev2:, move nm to dev2: */ |
570d7624 JB |
1772 | else if (colon && colon[-1] != ':') |
1773 | { | |
1774 | nm = colon + 1; | |
1775 | colon = 0; | |
1776 | } | |
1777 | if (p[0] == ':' && !colon) | |
1778 | { | |
1779 | if (p[1] == ':') | |
1780 | p++; | |
1781 | colon = p; | |
1782 | } | |
1783 | if (lbrack == rbrack) | |
1784 | if (p[0] == ';') | |
1785 | dots = 2; | |
1786 | else if (p[0] == '.') | |
1787 | dots++; | |
1788 | #endif /* VMS */ | |
1789 | p++; | |
1790 | } | |
1791 | if (!lose) | |
1792 | { | |
1793 | #ifdef VMS | |
1794 | if (index (nm, '/')) | |
1795 | return build_string (sys_translate_unix (nm)); | |
1796 | #endif /* VMS */ | |
1797 | if (nm == XSTRING (name)->data) | |
1798 | return name; | |
1799 | return build_string (nm); | |
1800 | } | |
1801 | } | |
1802 | ||
1803 | /* Now determine directory to start with and put it in NEWDIR */ | |
1804 | ||
1805 | newdir = 0; | |
1806 | ||
5e570b75 | 1807 | if (nm[0] == '~') /* prefix ~ */ |
570d7624 JB |
1808 | if (nm[1] == '/' |
1809 | #ifdef VMS | |
1810 | || nm[1] == ':' | |
1811 | #endif /* VMS */ | |
1812 | || nm[1] == 0)/* ~/filename */ | |
1813 | { | |
1814 | if (!(newdir = (unsigned char *) egetenv ("HOME"))) | |
1815 | newdir = (unsigned char *) ""; | |
1816 | nm++; | |
1817 | #ifdef VMS | |
5e570b75 | 1818 | nm++; /* Don't leave the slash in nm. */ |
570d7624 JB |
1819 | #endif /* VMS */ |
1820 | } | |
1821 | else /* ~user/filename */ | |
1822 | { | |
1823 | /* Get past ~ to user */ | |
1824 | unsigned char *user = nm + 1; | |
1825 | /* Find end of name. */ | |
1826 | unsigned char *ptr = (unsigned char *) index (user, '/'); | |
1827 | int len = ptr ? ptr - user : strlen (user); | |
1828 | #ifdef VMS | |
1829 | unsigned char *ptr1 = index (user, ':'); | |
1830 | if (ptr1 != 0 && ptr1 - user < len) | |
1831 | len = ptr1 - user; | |
5e570b75 | 1832 | #endif /* VMS */ |
570d7624 JB |
1833 | /* Copy the user name into temp storage. */ |
1834 | o = (unsigned char *) alloca (len + 1); | |
1835 | bcopy ((char *) user, o, len); | |
1836 | o[len] = 0; | |
1837 | ||
1838 | /* Look up the user name. */ | |
1839 | pw = (struct passwd *) getpwnam (o + 1); | |
1840 | if (!pw) | |
1841 | error ("\"%s\" isn't a registered user", o + 1); | |
1842 | ||
1843 | newdir = (unsigned char *) pw->pw_dir; | |
1844 | ||
1845 | /* Discard the user name from NM. */ | |
1846 | nm += len; | |
1847 | } | |
1848 | ||
1849 | if (nm[0] != '/' | |
1850 | #ifdef VMS | |
1851 | && !index (nm, ':') | |
1852 | #endif /* not VMS */ | |
1853 | && !newdir) | |
1854 | { | |
265a9e55 | 1855 | if (NILP (defalt)) |
570d7624 JB |
1856 | defalt = current_buffer->directory; |
1857 | CHECK_STRING (defalt, 1); | |
1858 | newdir = XSTRING (defalt)->data; | |
1859 | } | |
1860 | ||
1861 | /* Now concatenate the directory and name to new space in the stack frame */ | |
1862 | ||
1863 | tlen = (newdir ? strlen (newdir) + 1 : 0) + strlen (nm) + 1; | |
1864 | target = (unsigned char *) alloca (tlen); | |
1865 | *target = 0; | |
1866 | ||
1867 | if (newdir) | |
1868 | { | |
1869 | #ifndef VMS | |
1870 | if (nm[0] == 0 || nm[0] == '/') | |
1871 | strcpy (target, newdir); | |
1872 | else | |
1873 | #endif | |
1874 | file_name_as_directory (target, newdir); | |
1875 | } | |
1876 | ||
1877 | strcat (target, nm); | |
1878 | #ifdef VMS | |
1879 | if (index (target, '/')) | |
1880 | strcpy (target, sys_translate_unix (target)); | |
1881 | #endif /* VMS */ | |
1882 | ||
1883 | /* Now canonicalize by removing /. and /foo/.. if they appear */ | |
1884 | ||
1885 | p = target; | |
1886 | o = target; | |
1887 | ||
1888 | while (*p) | |
1889 | { | |
1890 | #ifdef VMS | |
1891 | if (*p != ']' && *p != '>' && *p != '-') | |
1892 | { | |
1893 | if (*p == '\\') | |
1894 | p++; | |
1895 | *o++ = *p++; | |
1896 | } | |
1897 | else if ((p[0] == ']' || p[0] == '>') && p[0] == p[1] + 2) | |
1898 | /* brackets are offset from each other by 2 */ | |
1899 | { | |
1900 | p += 2; | |
1901 | if (*p != '.' && *p != '-' && o[-1] != '.') | |
1902 | /* convert [foo][bar] to [bar] */ | |
1903 | while (o[-1] != '[' && o[-1] != '<') | |
1904 | o--; | |
1905 | else if (*p == '-' && *o != '.') | |
1906 | *--p = '.'; | |
1907 | } | |
1908 | else if (p[0] == '-' && o[-1] == '.' && | |
1909 | (p[1] == '.' || p[1] == ']' || p[1] == '>')) | |
1910 | /* flush .foo.- ; leave - if stopped by '[' or '<' */ | |
1911 | { | |
1912 | do | |
1913 | o--; | |
1914 | while (o[-1] != '.' && o[-1] != '[' && o[-1] != '<'); | |
5e570b75 | 1915 | if (p[1] == '.') /* foo.-.bar ==> bar. */ |
570d7624 JB |
1916 | p += 2; |
1917 | else if (o[-1] == '.') /* '.foo.-]' ==> ']' */ | |
1918 | p++, o--; | |
1919 | /* else [foo.-] ==> [-] */ | |
1920 | } | |
1921 | else | |
1922 | { | |
1923 | #ifndef VMS4_4 | |
1924 | if (*p == '-' && | |
1925 | o[-1] != '[' && o[-1] != '<' && o[-1] != '.' && | |
1926 | p[1] != ']' && p[1] != '>' && p[1] != '.') | |
1927 | *p = '_'; | |
1928 | #endif /* VMS4_4 */ | |
1929 | *o++ = *p++; | |
1930 | } | |
1931 | #else /* not VMS */ | |
1932 | if (*p != '/') | |
5e570b75 | 1933 | { |
570d7624 JB |
1934 | *o++ = *p++; |
1935 | } | |
1936 | else if (!strncmp (p, "//", 2) | |
1937 | #ifdef APOLLO | |
82330e7f | 1938 | /* // at start of filename is meaningful in Apollo system. */ |
570d7624 JB |
1939 | && o != target |
1940 | #endif /* APOLLO */ | |
1941 | ) | |
1942 | { | |
1943 | o = target; | |
1944 | p++; | |
1945 | } | |
1946 | else if (p[0] == '/' && p[1] == '.' && | |
1947 | (p[2] == '/' || p[2] == 0)) | |
1948 | p += 2; | |
1949 | else if (!strncmp (p, "/..", 3) | |
1950 | /* `/../' is the "superroot" on certain file systems. */ | |
1951 | && o != target | |
1952 | && (p[3] == '/' || p[3] == 0)) | |
1953 | { | |
1954 | while (o != target && *--o != '/') | |
1955 | ; | |
1956 | #ifdef APOLLO | |
1957 | if (o == target + 1 && o[-1] == '/' && o[0] == '/') | |
1958 | ++o; | |
1959 | else | |
1960 | #endif /* APOLLO */ | |
1961 | if (o == target && *o == '/') | |
1962 | ++o; | |
1963 | p += 3; | |
1964 | } | |
1965 | else | |
5e570b75 | 1966 | { |
570d7624 JB |
1967 | *o++ = *p++; |
1968 | } | |
1969 | #endif /* not VMS */ | |
1970 | } | |
1971 | ||
1972 | return make_string (target, o - target); | |
1973 | } | |
1974 | #endif | |
1975 | \f | |
1976 | DEFUN ("substitute-in-file-name", Fsubstitute_in_file_name, | |
1977 | Ssubstitute_in_file_name, 1, 1, 0, | |
1978 | "Substitute environment variables referred to in FILENAME.\n\ | |
1979 | `$FOO' where FOO is an environment variable name means to substitute\n\ | |
1980 | the value of that variable. The variable name should be terminated\n\ | |
1981 | with a character not a letter, digit or underscore; otherwise, enclose\n\ | |
1982 | the entire variable name in braces.\n\ | |
1983 | If `/~' appears, all of FILENAME through that `/' is discarded.\n\n\ | |
1984 | On VMS, `$' substitution is not done; this function does little and only\n\ | |
1985 | duplicates what `expand-file-name' does.") | |
3b7f6e60 EN |
1986 | (filename) |
1987 | Lisp_Object filename; | |
570d7624 JB |
1988 | { |
1989 | unsigned char *nm; | |
1990 | ||
1991 | register unsigned char *s, *p, *o, *x, *endp; | |
6bbd7a29 | 1992 | unsigned char *target = NULL; |
570d7624 JB |
1993 | int total = 0; |
1994 | int substituted = 0; | |
1995 | unsigned char *xnm; | |
8ce069f5 | 1996 | Lisp_Object handler; |
570d7624 | 1997 | |
3b7f6e60 | 1998 | CHECK_STRING (filename, 0); |
570d7624 | 1999 | |
8ce069f5 RS |
2000 | /* If the file name has special constructs in it, |
2001 | call the corresponding file handler. */ | |
3b7f6e60 | 2002 | handler = Ffind_file_name_handler (filename, Qsubstitute_in_file_name); |
8ce069f5 | 2003 | if (!NILP (handler)) |
3b7f6e60 | 2004 | return call2 (handler, Qsubstitute_in_file_name, filename); |
8ce069f5 | 2005 | |
3b7f6e60 | 2006 | nm = XSTRING (filename)->data; |
199607e4 RS |
2007 | #ifdef DOS_NT |
2008 | nm = strcpy (alloca (strlen (nm) + 1), nm); | |
2009 | CORRECT_DIR_SEPS (nm); | |
2010 | substituted = (strcmp (nm, XSTRING (filename)->data) != 0); | |
a5a1cc06 | 2011 | #endif |
fc932ac6 | 2012 | endp = nm + STRING_BYTES (XSTRING (filename)); |
570d7624 | 2013 | |
82330e7f | 2014 | /* If /~ or // appears, discard everything through first slash. */ |
570d7624 JB |
2015 | |
2016 | for (p = nm; p != endp; p++) | |
2017 | { | |
199607e4 RS |
2018 | if ((p[0] == '~' |
2019 | #if defined (APOLLO) || defined (WINDOWSNT) | |
2020 | /* // at start of file name is meaningful in Apollo and | |
82330e7f | 2021 | WindowsNT systems. */ |
199607e4 RS |
2022 | || (IS_DIRECTORY_SEP (p[0]) && p - 1 != nm) |
2023 | #else /* not (APOLLO || WINDOWSNT) */ | |
2024 | || IS_DIRECTORY_SEP (p[0]) | |
2025 | #endif /* not (APOLLO || WINDOWSNT) */ | |
570d7624 | 2026 | ) |
5e570b75 RS |
2027 | && p != nm |
2028 | && (0 | |
570d7624 | 2029 | #ifdef VMS |
5e570b75 | 2030 | || p[-1] == ':' || p[-1] == ']' || p[-1] == '>' |
570d7624 | 2031 | #endif /* VMS */ |
5e570b75 | 2032 | || IS_DIRECTORY_SEP (p[-1]))) |
570d7624 JB |
2033 | { |
2034 | nm = p; | |
2035 | substituted = 1; | |
2036 | } | |
5e570b75 | 2037 | #ifdef DOS_NT |
199607e4 RS |
2038 | /* see comment in expand-file-name about drive specifiers */ |
2039 | else if (IS_DRIVE (p[0]) && p[1] == ':' | |
2040 | && p > nm && IS_DIRECTORY_SEP (p[-1])) | |
4c3c22f3 RS |
2041 | { |
2042 | nm = p; | |
2043 | substituted = 1; | |
2044 | } | |
5e570b75 | 2045 | #endif /* DOS_NT */ |
570d7624 JB |
2046 | } |
2047 | ||
2048 | #ifdef VMS | |
2049 | return build_string (nm); | |
2050 | #else | |
2051 | ||
2052 | /* See if any variables are substituted into the string | |
2053 | and find the total length of their values in `total' */ | |
2054 | ||
2055 | for (p = nm; p != endp;) | |
2056 | if (*p != '$') | |
2057 | p++; | |
2058 | else | |
2059 | { | |
2060 | p++; | |
2061 | if (p == endp) | |
2062 | goto badsubst; | |
2063 | else if (*p == '$') | |
2064 | { | |
2065 | /* "$$" means a single "$" */ | |
2066 | p++; | |
2067 | total -= 1; | |
2068 | substituted = 1; | |
2069 | continue; | |
2070 | } | |
2071 | else if (*p == '{') | |
2072 | { | |
2073 | o = ++p; | |
2074 | while (p != endp && *p != '}') p++; | |
2075 | if (*p != '}') goto missingclose; | |
2076 | s = p; | |
2077 | } | |
2078 | else | |
2079 | { | |
2080 | o = p; | |
2081 | while (p != endp && (isalnum (*p) || *p == '_')) p++; | |
2082 | s = p; | |
2083 | } | |
2084 | ||
2085 | /* Copy out the variable name */ | |
2086 | target = (unsigned char *) alloca (s - o + 1); | |
2087 | strncpy (target, o, s - o); | |
2088 | target[s - o] = 0; | |
5e570b75 | 2089 | #ifdef DOS_NT |
4c3c22f3 | 2090 | strupr (target); /* $home == $HOME etc. */ |
5e570b75 | 2091 | #endif /* DOS_NT */ |
570d7624 JB |
2092 | |
2093 | /* Get variable value */ | |
2094 | o = (unsigned char *) egetenv (target); | |
570d7624 JB |
2095 | if (!o) goto badvar; |
2096 | total += strlen (o); | |
2097 | substituted = 1; | |
2098 | } | |
2099 | ||
2100 | if (!substituted) | |
3b7f6e60 | 2101 | return filename; |
570d7624 JB |
2102 | |
2103 | /* If substitution required, recopy the string and do it */ | |
2104 | /* Make space in stack frame for the new copy */ | |
fc932ac6 | 2105 | xnm = (unsigned char *) alloca (STRING_BYTES (XSTRING (filename)) + total + 1); |
570d7624 JB |
2106 | x = xnm; |
2107 | ||
2108 | /* Copy the rest of the name through, replacing $ constructs with values */ | |
2109 | for (p = nm; *p;) | |
2110 | if (*p != '$') | |
2111 | *x++ = *p++; | |
2112 | else | |
2113 | { | |
2114 | p++; | |
2115 | if (p == endp) | |
2116 | goto badsubst; | |
2117 | else if (*p == '$') | |
2118 | { | |
2119 | *x++ = *p++; | |
2120 | continue; | |
2121 | } | |
2122 | else if (*p == '{') | |
2123 | { | |
2124 | o = ++p; | |
2125 | while (p != endp && *p != '}') p++; | |
2126 | if (*p != '}') goto missingclose; | |
2127 | s = p++; | |
2128 | } | |
2129 | else | |
2130 | { | |
2131 | o = p; | |
2132 | while (p != endp && (isalnum (*p) || *p == '_')) p++; | |
2133 | s = p; | |
2134 | } | |
2135 | ||
2136 | /* Copy out the variable name */ | |
2137 | target = (unsigned char *) alloca (s - o + 1); | |
2138 | strncpy (target, o, s - o); | |
2139 | target[s - o] = 0; | |
5e570b75 | 2140 | #ifdef DOS_NT |
4c3c22f3 | 2141 | strupr (target); /* $home == $HOME etc. */ |
5e570b75 | 2142 | #endif /* DOS_NT */ |
570d7624 JB |
2143 | |
2144 | /* Get variable value */ | |
2145 | o = (unsigned char *) egetenv (target); | |
570d7624 JB |
2146 | if (!o) |
2147 | goto badvar; | |
2148 | ||
60d67b83 RS |
2149 | if (STRING_MULTIBYTE (filename)) |
2150 | { | |
2151 | /* If the original string is multibyte, | |
2152 | convert what we substitute into multibyte. */ | |
60d67b83 RS |
2153 | while (*o) |
2154 | { | |
ce51c54c KH |
2155 | int c = unibyte_char_to_multibyte (*o++); |
2156 | x += CHAR_STRING (c, x); | |
60d67b83 RS |
2157 | } |
2158 | } | |
2159 | else | |
2160 | { | |
2161 | strcpy (x, o); | |
2162 | x += strlen (o); | |
2163 | } | |
570d7624 JB |
2164 | } |
2165 | ||
2166 | *x = 0; | |
2167 | ||
82330e7f | 2168 | /* If /~ or // appears, discard everything through first slash. */ |
570d7624 JB |
2169 | |
2170 | for (p = xnm; p != x; p++) | |
5e570b75 | 2171 | if ((p[0] == '~' |
199607e4 | 2172 | #if defined (APOLLO) || defined (WINDOWSNT) |
5e570b75 | 2173 | || (IS_DIRECTORY_SEP (p[0]) && p - 1 != xnm) |
199607e4 RS |
2174 | #else /* not (APOLLO || WINDOWSNT) */ |
2175 | || IS_DIRECTORY_SEP (p[0]) | |
2176 | #endif /* not (APOLLO || WINDOWSNT) */ | |
570d7624 | 2177 | ) |
ac5b7072 | 2178 | && p != xnm && IS_DIRECTORY_SEP (p[-1])) |
570d7624 | 2179 | xnm = p; |
5e570b75 | 2180 | #ifdef DOS_NT |
199607e4 | 2181 | else if (IS_DRIVE (p[0]) && p[1] == ':' |
4488d7e1 | 2182 | && p > xnm && IS_DIRECTORY_SEP (p[-1])) |
199607e4 | 2183 | xnm = p; |
4c3c22f3 | 2184 | #endif |
570d7624 | 2185 | |
60d67b83 RS |
2186 | if (STRING_MULTIBYTE (filename)) |
2187 | return make_string (xnm, x - xnm); | |
2188 | return make_unibyte_string (xnm, x - xnm); | |
570d7624 JB |
2189 | |
2190 | badsubst: | |
2191 | error ("Bad format environment-variable substitution"); | |
2192 | missingclose: | |
2193 | error ("Missing \"}\" in environment-variable substitution"); | |
2194 | badvar: | |
2195 | error ("Substituting nonexistent environment variable \"%s\"", target); | |
2196 | ||
2197 | /* NOTREACHED */ | |
2198 | #endif /* not VMS */ | |
6bbd7a29 | 2199 | return Qnil; |
570d7624 JB |
2200 | } |
2201 | \f | |
067ffa38 | 2202 | /* A slightly faster and more convenient way to get |
298b760e | 2203 | (directory-file-name (expand-file-name FOO)). */ |
067ffa38 | 2204 | |
570d7624 JB |
2205 | Lisp_Object |
2206 | expand_and_dir_to_file (filename, defdir) | |
2207 | Lisp_Object filename, defdir; | |
2208 | { | |
199607e4 | 2209 | register Lisp_Object absname; |
570d7624 | 2210 | |
199607e4 | 2211 | absname = Fexpand_file_name (filename, defdir); |
570d7624 JB |
2212 | #ifdef VMS |
2213 | { | |
fc932ac6 | 2214 | register int c = XSTRING (absname)->data[STRING_BYTES (XSTRING (absname)) - 1]; |
570d7624 | 2215 | if (c == ':' || c == ']' || c == '>') |
199607e4 | 2216 | absname = Fdirectory_file_name (absname); |
570d7624 JB |
2217 | } |
2218 | #else | |
199607e4 | 2219 | /* Remove final slash, if any (unless this is the root dir). |
570d7624 | 2220 | stat behaves differently depending! */ |
199607e4 | 2221 | if (XSTRING (absname)->size > 1 |
fc932ac6 RS |
2222 | && IS_DIRECTORY_SEP (XSTRING (absname)->data[STRING_BYTES (XSTRING (absname)) - 1]) |
2223 | && !IS_DEVICE_SEP (XSTRING (absname)->data[STRING_BYTES (XSTRING (absname))-2])) | |
ddc61f46 | 2224 | /* We cannot take shortcuts; they might be wrong for magic file names. */ |
199607e4 | 2225 | absname = Fdirectory_file_name (absname); |
570d7624 | 2226 | #endif |
199607e4 | 2227 | return absname; |
570d7624 JB |
2228 | } |
2229 | \f | |
3ed15d97 RS |
2230 | /* Signal an error if the file ABSNAME already exists. |
2231 | If INTERACTIVE is nonzero, ask the user whether to proceed, | |
2232 | and bypass the error if the user says to go ahead. | |
2233 | QUERYSTRING is a name for the action that is being considered | |
2234 | to alter the file. | |
de1d0127 | 2235 | |
3ed15d97 | 2236 | *STATPTR is used to store the stat information if the file exists. |
de1d0127 | 2237 | If the file does not exist, STATPTR->st_mode is set to 0. |
b8b29dc9 RS |
2238 | If STATPTR is null, we don't store into it. |
2239 | ||
2240 | If QUICK is nonzero, we ask for y or n, not yes or no. */ | |
3ed15d97 | 2241 | |
c4df73f9 | 2242 | void |
b8b29dc9 | 2243 | barf_or_query_if_file_exists (absname, querystring, interactive, statptr, quick) |
570d7624 JB |
2244 | Lisp_Object absname; |
2245 | unsigned char *querystring; | |
2246 | int interactive; | |
3ed15d97 | 2247 | struct stat *statptr; |
b8b29dc9 | 2248 | int quick; |
570d7624 | 2249 | { |
643c73b9 | 2250 | register Lisp_Object tem, encoded_filename; |
4018b5ef | 2251 | struct stat statbuf; |
570d7624 JB |
2252 | struct gcpro gcpro1; |
2253 | ||
643c73b9 RS |
2254 | encoded_filename = ENCODE_FILE (absname); |
2255 | ||
4018b5ef RS |
2256 | /* stat is a good way to tell whether the file exists, |
2257 | regardless of what access permissions it has. */ | |
643c73b9 | 2258 | if (stat (XSTRING (encoded_filename)->data, &statbuf) >= 0) |
570d7624 JB |
2259 | { |
2260 | if (! interactive) | |
2261 | Fsignal (Qfile_already_exists, | |
2262 | Fcons (build_string ("File already exists"), | |
2263 | Fcons (absname, Qnil))); | |
2264 | GCPRO1 (absname); | |
b8b29dc9 RS |
2265 | tem = format1 ("File %s already exists; %s anyway? ", |
2266 | XSTRING (absname)->data, querystring); | |
2267 | if (quick) | |
2268 | tem = Fy_or_n_p (tem); | |
2269 | else | |
2270 | tem = do_yes_or_no_p (tem); | |
570d7624 | 2271 | UNGCPRO; |
265a9e55 | 2272 | if (NILP (tem)) |
570d7624 JB |
2273 | Fsignal (Qfile_already_exists, |
2274 | Fcons (build_string ("File already exists"), | |
2275 | Fcons (absname, Qnil))); | |
3ed15d97 RS |
2276 | if (statptr) |
2277 | *statptr = statbuf; | |
2278 | } | |
2279 | else | |
2280 | { | |
2281 | if (statptr) | |
2282 | statptr->st_mode = 0; | |
570d7624 JB |
2283 | } |
2284 | return; | |
2285 | } | |
2286 | ||
2287 | DEFUN ("copy-file", Fcopy_file, Scopy_file, 2, 4, | |
349a7710 | 2288 | "fCopy file: \nFCopy %s to file: \np\nP", |
570d7624 JB |
2289 | "Copy FILE to NEWNAME. Both args must be strings.\n\ |
2290 | Signals a `file-already-exists' error if file NEWNAME already exists,\n\ | |
2291 | unless a third argument OK-IF-ALREADY-EXISTS is supplied and non-nil.\n\ | |
2292 | A number as third arg means request confirmation if NEWNAME already exists.\n\ | |
2293 | This is what happens in interactive use with M-x.\n\ | |
349a7710 JB |
2294 | Fourth arg KEEP-TIME non-nil means give the new file the same\n\ |
2295 | last-modified time as the old one. (This works on only some systems.)\n\ | |
2296 | A prefix arg makes KEEP-TIME non-nil.") | |
8ca6602c EZ |
2297 | (file, newname, ok_if_already_exists, keep_time) |
2298 | Lisp_Object file, newname, ok_if_already_exists, keep_time; | |
570d7624 JB |
2299 | { |
2300 | int ifd, ofd, n; | |
2301 | char buf[16 * 1024]; | |
3ed15d97 | 2302 | struct stat st, out_st; |
32f4334d | 2303 | Lisp_Object handler; |
b1d1b865 | 2304 | struct gcpro gcpro1, gcpro2, gcpro3, gcpro4; |
b5148e85 | 2305 | int count = specpdl_ptr - specpdl; |
f73b0ada | 2306 | int input_file_statable_p; |
b1d1b865 | 2307 | Lisp_Object encoded_file, encoded_newname; |
570d7624 | 2308 | |
b1d1b865 RS |
2309 | encoded_file = encoded_newname = Qnil; |
2310 | GCPRO4 (file, newname, encoded_file, encoded_newname); | |
3b7f6e60 | 2311 | CHECK_STRING (file, 0); |
570d7624 | 2312 | CHECK_STRING (newname, 1); |
b1d1b865 | 2313 | |
3b7f6e60 | 2314 | file = Fexpand_file_name (file, Qnil); |
570d7624 | 2315 | newname = Fexpand_file_name (newname, Qnil); |
32f4334d | 2316 | |
0bf2eed2 | 2317 | /* If the input file name has special constructs in it, |
32f4334d | 2318 | call the corresponding file handler. */ |
3b7f6e60 | 2319 | handler = Ffind_file_name_handler (file, Qcopy_file); |
0bf2eed2 | 2320 | /* Likewise for output file name. */ |
51cf6d37 | 2321 | if (NILP (handler)) |
49307295 | 2322 | handler = Ffind_file_name_handler (newname, Qcopy_file); |
32f4334d | 2323 | if (!NILP (handler)) |
3b7f6e60 | 2324 | RETURN_UNGCPRO (call5 (handler, Qcopy_file, file, newname, |
8ca6602c | 2325 | ok_if_already_exists, keep_time)); |
32f4334d | 2326 | |
b1d1b865 RS |
2327 | encoded_file = ENCODE_FILE (file); |
2328 | encoded_newname = ENCODE_FILE (newname); | |
2329 | ||
265a9e55 | 2330 | if (NILP (ok_if_already_exists) |
93c30b5f | 2331 | || INTEGERP (ok_if_already_exists)) |
b1d1b865 | 2332 | barf_or_query_if_file_exists (encoded_newname, "copy to it", |
b8b29dc9 | 2333 | INTEGERP (ok_if_already_exists), &out_st, 0); |
b1d1b865 | 2334 | else if (stat (XSTRING (encoded_newname)->data, &out_st) < 0) |
3ed15d97 | 2335 | out_st.st_mode = 0; |
570d7624 | 2336 | |
e8691c59 GM |
2337 | #ifdef WINDOWSNT |
2338 | if (!CopyFile (XSTRING (encoded_file)->data, | |
2339 | XSTRING (encoded_newname)->data, | |
2340 | FALSE)) | |
2341 | report_file_error ("Copying file", Fcons (file, Fcons (newname, Qnil))); | |
2342 | else if (NILP (keep_time)) | |
2343 | { | |
2344 | EMACS_TIME now; | |
2345 | EMACS_GET_TIME (now); | |
2346 | if (set_file_times (XSTRING (encoded_newname)->data, | |
2347 | now, now)) | |
2348 | Fsignal (Qfile_date_error, | |
2349 | Fcons (build_string ("Cannot set file date"), | |
2350 | Fcons (newname, Qnil))); | |
2351 | } | |
2352 | #else /* not WINDOWSNT */ | |
68c45bf0 | 2353 | ifd = emacs_open (XSTRING (encoded_file)->data, O_RDONLY, 0); |
570d7624 | 2354 | if (ifd < 0) |
3b7f6e60 | 2355 | report_file_error ("Opening input file", Fcons (file, Qnil)); |
570d7624 | 2356 | |
b5148e85 RS |
2357 | record_unwind_protect (close_file_unwind, make_number (ifd)); |
2358 | ||
f73b0ada BF |
2359 | /* We can only copy regular files and symbolic links. Other files are not |
2360 | copyable by us. */ | |
2361 | input_file_statable_p = (fstat (ifd, &st) >= 0); | |
2362 | ||
f9ba66ce | 2363 | #if !defined (DOS_NT) || __DJGPP__ > 1 |
3ed15d97 RS |
2364 | if (out_st.st_mode != 0 |
2365 | && st.st_dev == out_st.st_dev && st.st_ino == out_st.st_ino) | |
2366 | { | |
2367 | errno = 0; | |
2368 | report_file_error ("Input and output files are the same", | |
3b7f6e60 | 2369 | Fcons (file, Fcons (newname, Qnil))); |
3ed15d97 RS |
2370 | } |
2371 | #endif | |
2372 | ||
f73b0ada BF |
2373 | #if defined (S_ISREG) && defined (S_ISLNK) |
2374 | if (input_file_statable_p) | |
2375 | { | |
2376 | if (!(S_ISREG (st.st_mode)) && !(S_ISLNK (st.st_mode))) | |
2377 | { | |
2378 | #if defined (EISDIR) | |
2379 | /* Get a better looking error message. */ | |
2380 | errno = EISDIR; | |
2381 | #endif /* EISDIR */ | |
3b7f6e60 | 2382 | report_file_error ("Non-regular file", Fcons (file, Qnil)); |
f73b0ada BF |
2383 | } |
2384 | } | |
2385 | #endif /* S_ISREG && S_ISLNK */ | |
2386 | ||
570d7624 JB |
2387 | #ifdef VMS |
2388 | /* Create the copy file with the same record format as the input file */ | |
b1d1b865 | 2389 | ofd = sys_creat (XSTRING (encoded_newname)->data, 0666, ifd); |
570d7624 | 2390 | #else |
4c3c22f3 RS |
2391 | #ifdef MSDOS |
2392 | /* System's default file type was set to binary by _fmode in emacs.c. */ | |
b1d1b865 | 2393 | ofd = creat (XSTRING (encoded_newname)->data, S_IREAD | S_IWRITE); |
4c3c22f3 | 2394 | #else /* not MSDOS */ |
b1d1b865 | 2395 | ofd = creat (XSTRING (encoded_newname)->data, 0666); |
4c3c22f3 | 2396 | #endif /* not MSDOS */ |
570d7624 JB |
2397 | #endif /* VMS */ |
2398 | if (ofd < 0) | |
3ed15d97 | 2399 | report_file_error ("Opening output file", Fcons (newname, Qnil)); |
b5148e85 RS |
2400 | |
2401 | record_unwind_protect (close_file_unwind, make_number (ofd)); | |
570d7624 | 2402 | |
b5148e85 RS |
2403 | immediate_quit = 1; |
2404 | QUIT; | |
68c45bf0 PE |
2405 | while ((n = emacs_read (ifd, buf, sizeof buf)) > 0) |
2406 | if (emacs_write (ofd, buf, n) != n) | |
3ed15d97 | 2407 | report_file_error ("I/O error", Fcons (newname, Qnil)); |
b5148e85 | 2408 | immediate_quit = 0; |
570d7624 | 2409 | |
5acac34e | 2410 | /* Closing the output clobbers the file times on some systems. */ |
68c45bf0 | 2411 | if (emacs_close (ofd) < 0) |
5acac34e RS |
2412 | report_file_error ("I/O error", Fcons (newname, Qnil)); |
2413 | ||
f73b0ada | 2414 | if (input_file_statable_p) |
570d7624 | 2415 | { |
8ca6602c | 2416 | if (!NILP (keep_time)) |
570d7624 | 2417 | { |
de5bf5d3 JB |
2418 | EMACS_TIME atime, mtime; |
2419 | EMACS_SET_SECS_USECS (atime, st.st_atime, 0); | |
2420 | EMACS_SET_SECS_USECS (mtime, st.st_mtime, 0); | |
b1d1b865 RS |
2421 | if (set_file_times (XSTRING (encoded_newname)->data, |
2422 | atime, mtime)) | |
c0b7b21c | 2423 | Fsignal (Qfile_date_error, |
d1b9ed63 | 2424 | Fcons (build_string ("Cannot set file date"), |
3dbcf3f6 | 2425 | Fcons (newname, Qnil))); |
570d7624 | 2426 | } |
2dc3be7e | 2427 | #ifndef MSDOS |
b1d1b865 | 2428 | chmod (XSTRING (encoded_newname)->data, st.st_mode & 07777); |
2dc3be7e RS |
2429 | #else /* MSDOS */ |
2430 | #if defined (__DJGPP__) && __DJGPP__ > 1 | |
2431 | /* In DJGPP v2.0 and later, fstat usually returns true file mode bits, | |
2432 | and if it can't, it tells so. Otherwise, under MSDOS we usually | |
2433 | get only the READ bit, which will make the copied file read-only, | |
2434 | so it's better not to chmod at all. */ | |
2435 | if ((_djstat_flags & _STFAIL_WRITEBIT) == 0) | |
b1d1b865 | 2436 | chmod (XSTRING (encoded_newname)->data, st.st_mode & 07777); |
2dc3be7e RS |
2437 | #endif /* DJGPP version 2 or newer */ |
2438 | #endif /* MSDOS */ | |
570d7624 JB |
2439 | } |
2440 | ||
68c45bf0 | 2441 | emacs_close (ifd); |
e8691c59 | 2442 | #endif /* WINDOWSNT */ |
5acac34e | 2443 | |
b5148e85 RS |
2444 | /* Discard the unwind protects. */ |
2445 | specpdl_ptr = specpdl + count; | |
2446 | ||
570d7624 JB |
2447 | UNGCPRO; |
2448 | return Qnil; | |
2449 | } | |
385b6cc7 | 2450 | \f |
9bbe01fb | 2451 | DEFUN ("make-directory-internal", Fmake_directory_internal, |
353cfc19 | 2452 | Smake_directory_internal, 1, 1, 0, |
3b7f6e60 EN |
2453 | "Create a new directory named DIRECTORY.") |
2454 | (directory) | |
2455 | Lisp_Object directory; | |
570d7624 JB |
2456 | { |
2457 | unsigned char *dir; | |
32f4334d | 2458 | Lisp_Object handler; |
b1d1b865 | 2459 | Lisp_Object encoded_dir; |
570d7624 | 2460 | |
3b7f6e60 EN |
2461 | CHECK_STRING (directory, 0); |
2462 | directory = Fexpand_file_name (directory, Qnil); | |
32f4334d | 2463 | |
3b7f6e60 | 2464 | handler = Ffind_file_name_handler (directory, Qmake_directory_internal); |
32f4334d | 2465 | if (!NILP (handler)) |
3b7f6e60 | 2466 | return call2 (handler, Qmake_directory_internal, directory); |
9bbe01fb | 2467 | |
b1d1b865 RS |
2468 | encoded_dir = ENCODE_FILE (directory); |
2469 | ||
2470 | dir = XSTRING (encoded_dir)->data; | |
570d7624 | 2471 | |
5e570b75 RS |
2472 | #ifdef WINDOWSNT |
2473 | if (mkdir (dir) != 0) | |
2474 | #else | |
570d7624 | 2475 | if (mkdir (dir, 0777) != 0) |
5e570b75 | 2476 | #endif |
3b7f6e60 | 2477 | report_file_error ("Creating directory", Flist (1, &directory)); |
570d7624 | 2478 | |
32f4334d | 2479 | return Qnil; |
570d7624 JB |
2480 | } |
2481 | ||
aa734e17 | 2482 | DEFUN ("delete-directory", Fdelete_directory, Sdelete_directory, 1, 1, "FDelete directory: ", |
3b7f6e60 EN |
2483 | "Delete the directory named DIRECTORY.") |
2484 | (directory) | |
2485 | Lisp_Object directory; | |
570d7624 JB |
2486 | { |
2487 | unsigned char *dir; | |
32f4334d | 2488 | Lisp_Object handler; |
b1d1b865 | 2489 | Lisp_Object encoded_dir; |
570d7624 | 2490 | |
3b7f6e60 EN |
2491 | CHECK_STRING (directory, 0); |
2492 | directory = Fdirectory_file_name (Fexpand_file_name (directory, Qnil)); | |
570d7624 | 2493 | |
3b7f6e60 | 2494 | handler = Ffind_file_name_handler (directory, Qdelete_directory); |
32f4334d | 2495 | if (!NILP (handler)) |
3b7f6e60 | 2496 | return call2 (handler, Qdelete_directory, directory); |
32f4334d | 2497 | |
b1d1b865 RS |
2498 | encoded_dir = ENCODE_FILE (directory); |
2499 | ||
2500 | dir = XSTRING (encoded_dir)->data; | |
2501 | ||
570d7624 | 2502 | if (rmdir (dir) != 0) |
3b7f6e60 | 2503 | report_file_error ("Removing directory", Flist (1, &directory)); |
570d7624 JB |
2504 | |
2505 | return Qnil; | |
2506 | } | |
2507 | ||
2508 | DEFUN ("delete-file", Fdelete_file, Sdelete_file, 1, 1, "fDelete file: ", | |
3b7f6e60 | 2509 | "Delete file named FILENAME.\n\ |
570d7624 JB |
2510 | If file has multiple names, it continues to exist with the other names.") |
2511 | (filename) | |
2512 | Lisp_Object filename; | |
2513 | { | |
32f4334d | 2514 | Lisp_Object handler; |
b1d1b865 RS |
2515 | Lisp_Object encoded_file; |
2516 | ||
570d7624 JB |
2517 | CHECK_STRING (filename, 0); |
2518 | filename = Fexpand_file_name (filename, Qnil); | |
32f4334d | 2519 | |
49307295 | 2520 | handler = Ffind_file_name_handler (filename, Qdelete_file); |
32f4334d | 2521 | if (!NILP (handler)) |
8a9b0da9 | 2522 | return call2 (handler, Qdelete_file, filename); |
32f4334d | 2523 | |
b1d1b865 RS |
2524 | encoded_file = ENCODE_FILE (filename); |
2525 | ||
2526 | if (0 > unlink (XSTRING (encoded_file)->data)) | |
570d7624 | 2527 | report_file_error ("Removing old name", Flist (1, &filename)); |
8a9b0da9 | 2528 | return Qnil; |
570d7624 JB |
2529 | } |
2530 | ||
385b6cc7 RS |
2531 | static Lisp_Object |
2532 | internal_delete_file_1 (ignore) | |
2533 | Lisp_Object ignore; | |
2534 | { | |
2535 | return Qt; | |
2536 | } | |
2537 | ||
2538 | /* Delete file FILENAME, returning 1 if successful and 0 if failed. */ | |
2539 | ||
2540 | int | |
2541 | internal_delete_file (filename) | |
2542 | Lisp_Object filename; | |
2543 | { | |
2544 | return NILP (internal_condition_case_1 (Fdelete_file, filename, | |
2545 | Qt, internal_delete_file_1)); | |
2546 | } | |
2547 | \f | |
570d7624 JB |
2548 | DEFUN ("rename-file", Frename_file, Srename_file, 2, 3, |
2549 | "fRename file: \nFRename %s to file: \np", | |
2550 | "Rename FILE as NEWNAME. Both args strings.\n\ | |
2551 | If file has names other than FILE, it continues to have those names.\n\ | |
2552 | Signals a `file-already-exists' error if a file NEWNAME already exists\n\ | |
2553 | unless optional third argument OK-IF-ALREADY-EXISTS is non-nil.\n\ | |
2554 | A number as third arg means request confirmation if NEWNAME already exists.\n\ | |
2555 | This is what happens in interactive use with M-x.") | |
3b7f6e60 EN |
2556 | (file, newname, ok_if_already_exists) |
2557 | Lisp_Object file, newname, ok_if_already_exists; | |
570d7624 JB |
2558 | { |
2559 | #ifdef NO_ARG_ARRAY | |
2560 | Lisp_Object args[2]; | |
2561 | #endif | |
32f4334d | 2562 | Lisp_Object handler; |
b1d1b865 RS |
2563 | struct gcpro gcpro1, gcpro2, gcpro3, gcpro4; |
2564 | Lisp_Object encoded_file, encoded_newname; | |
570d7624 | 2565 | |
b1d1b865 RS |
2566 | encoded_file = encoded_newname = Qnil; |
2567 | GCPRO4 (file, newname, encoded_file, encoded_newname); | |
3b7f6e60 | 2568 | CHECK_STRING (file, 0); |
570d7624 | 2569 | CHECK_STRING (newname, 1); |
3b7f6e60 | 2570 | file = Fexpand_file_name (file, Qnil); |
570d7624 | 2571 | newname = Fexpand_file_name (newname, Qnil); |
32f4334d RS |
2572 | |
2573 | /* If the file name has special constructs in it, | |
2574 | call the corresponding file handler. */ | |
3b7f6e60 | 2575 | handler = Ffind_file_name_handler (file, Qrename_file); |
51cf6d37 | 2576 | if (NILP (handler)) |
49307295 | 2577 | handler = Ffind_file_name_handler (newname, Qrename_file); |
32f4334d | 2578 | if (!NILP (handler)) |
36712b0a | 2579 | RETURN_UNGCPRO (call4 (handler, Qrename_file, |
3b7f6e60 | 2580 | file, newname, ok_if_already_exists)); |
32f4334d | 2581 | |
b1d1b865 RS |
2582 | encoded_file = ENCODE_FILE (file); |
2583 | encoded_newname = ENCODE_FILE (newname); | |
2584 | ||
bc77278f EZ |
2585 | #ifdef DOS_NT |
2586 | /* If the file names are identical but for the case, don't ask for | |
2587 | confirmation: they simply want to change the letter-case of the | |
2588 | file name. */ | |
2589 | if (NILP (Fstring_equal (Fdowncase (file), Fdowncase (newname)))) | |
2590 | #endif | |
265a9e55 | 2591 | if (NILP (ok_if_already_exists) |
93c30b5f | 2592 | || INTEGERP (ok_if_already_exists)) |
b1d1b865 | 2593 | barf_or_query_if_file_exists (encoded_newname, "rename to it", |
b8b29dc9 | 2594 | INTEGERP (ok_if_already_exists), 0, 0); |
570d7624 | 2595 | #ifndef BSD4_1 |
b1d1b865 | 2596 | if (0 > rename (XSTRING (encoded_file)->data, XSTRING (encoded_newname)->data)) |
570d7624 | 2597 | #else |
b1d1b865 RS |
2598 | if (0 > link (XSTRING (encoded_file)->data, XSTRING (encoded_newname)->data) |
2599 | || 0 > unlink (XSTRING (encoded_file)->data)) | |
570d7624 JB |
2600 | #endif |
2601 | { | |
2602 | if (errno == EXDEV) | |
2603 | { | |
3b7f6e60 | 2604 | Fcopy_file (file, newname, |
d093c3ac RM |
2605 | /* We have already prompted if it was an integer, |
2606 | so don't have copy-file prompt again. */ | |
2607 | NILP (ok_if_already_exists) ? Qnil : Qt, Qt); | |
3b7f6e60 | 2608 | Fdelete_file (file); |
570d7624 JB |
2609 | } |
2610 | else | |
2611 | #ifdef NO_ARG_ARRAY | |
2612 | { | |
3b7f6e60 | 2613 | args[0] = file; |
570d7624 JB |
2614 | args[1] = newname; |
2615 | report_file_error ("Renaming", Flist (2, args)); | |
2616 | } | |
2617 | #else | |
3b7f6e60 | 2618 | report_file_error ("Renaming", Flist (2, &file)); |
570d7624 JB |
2619 | #endif |
2620 | } | |
2621 | UNGCPRO; | |
2622 | return Qnil; | |
2623 | } | |
2624 | ||
2625 | DEFUN ("add-name-to-file", Fadd_name_to_file, Sadd_name_to_file, 2, 3, | |
2626 | "fAdd name to file: \nFName to add to %s: \np", | |
2627 | "Give FILE additional name NEWNAME. Both args strings.\n\ | |
2628 | Signals a `file-already-exists' error if a file NEWNAME already exists\n\ | |
2629 | unless optional third argument OK-IF-ALREADY-EXISTS is non-nil.\n\ | |
2630 | A number as third arg means request confirmation if NEWNAME already exists.\n\ | |
2631 | This is what happens in interactive use with M-x.") | |
3b7f6e60 EN |
2632 | (file, newname, ok_if_already_exists) |
2633 | Lisp_Object file, newname, ok_if_already_exists; | |
570d7624 JB |
2634 | { |
2635 | #ifdef NO_ARG_ARRAY | |
2636 | Lisp_Object args[2]; | |
2637 | #endif | |
32f4334d | 2638 | Lisp_Object handler; |
b1d1b865 RS |
2639 | Lisp_Object encoded_file, encoded_newname; |
2640 | struct gcpro gcpro1, gcpro2, gcpro3, gcpro4; | |
570d7624 | 2641 | |
b1d1b865 RS |
2642 | GCPRO4 (file, newname, encoded_file, encoded_newname); |
2643 | encoded_file = encoded_newname = Qnil; | |
3b7f6e60 | 2644 | CHECK_STRING (file, 0); |
570d7624 | 2645 | CHECK_STRING (newname, 1); |
3b7f6e60 | 2646 | file = Fexpand_file_name (file, Qnil); |
570d7624 | 2647 | newname = Fexpand_file_name (newname, Qnil); |
32f4334d RS |
2648 | |
2649 | /* If the file name has special constructs in it, | |
2650 | call the corresponding file handler. */ | |
3b7f6e60 | 2651 | handler = Ffind_file_name_handler (file, Qadd_name_to_file); |
32f4334d | 2652 | if (!NILP (handler)) |
3b7f6e60 | 2653 | RETURN_UNGCPRO (call4 (handler, Qadd_name_to_file, file, |
36712b0a | 2654 | newname, ok_if_already_exists)); |
32f4334d | 2655 | |
adc6741c RS |
2656 | /* If the new name has special constructs in it, |
2657 | call the corresponding file handler. */ | |
2658 | handler = Ffind_file_name_handler (newname, Qadd_name_to_file); | |
2659 | if (!NILP (handler)) | |
3b7f6e60 | 2660 | RETURN_UNGCPRO (call4 (handler, Qadd_name_to_file, file, |
adc6741c RS |
2661 | newname, ok_if_already_exists)); |
2662 | ||
b1d1b865 RS |
2663 | encoded_file = ENCODE_FILE (file); |
2664 | encoded_newname = ENCODE_FILE (newname); | |
2665 | ||
265a9e55 | 2666 | if (NILP (ok_if_already_exists) |
93c30b5f | 2667 | || INTEGERP (ok_if_already_exists)) |
b1d1b865 | 2668 | barf_or_query_if_file_exists (encoded_newname, "make it a new name", |
b8b29dc9 | 2669 | INTEGERP (ok_if_already_exists), 0, 0); |
5e570b75 | 2670 | |
570d7624 | 2671 | unlink (XSTRING (newname)->data); |
b1d1b865 | 2672 | if (0 > link (XSTRING (encoded_file)->data, XSTRING (encoded_newname)->data)) |
570d7624 JB |
2673 | { |
2674 | #ifdef NO_ARG_ARRAY | |
3b7f6e60 | 2675 | args[0] = file; |
570d7624 JB |
2676 | args[1] = newname; |
2677 | report_file_error ("Adding new name", Flist (2, args)); | |
2678 | #else | |
3b7f6e60 | 2679 | report_file_error ("Adding new name", Flist (2, &file)); |
570d7624 JB |
2680 | #endif |
2681 | } | |
2682 | ||
2683 | UNGCPRO; | |
2684 | return Qnil; | |
2685 | } | |
2686 | ||
2687 | #ifdef S_IFLNK | |
2688 | DEFUN ("make-symbolic-link", Fmake_symbolic_link, Smake_symbolic_link, 2, 3, | |
2689 | "FMake symbolic link to file: \nFMake symbolic link to file %s: \np", | |
2690 | "Make a symbolic link to FILENAME, named LINKNAME. Both args strings.\n\ | |
11183104 | 2691 | Signals a `file-already-exists' error if a file LINKNAME already exists\n\ |
570d7624 | 2692 | unless optional third argument OK-IF-ALREADY-EXISTS is non-nil.\n\ |
11183104 | 2693 | A number as third arg means request confirmation if LINKNAME already exists.\n\ |
570d7624 | 2694 | This happens for interactive use with M-x.") |
e5d77022 JB |
2695 | (filename, linkname, ok_if_already_exists) |
2696 | Lisp_Object filename, linkname, ok_if_already_exists; | |
570d7624 JB |
2697 | { |
2698 | #ifdef NO_ARG_ARRAY | |
2699 | Lisp_Object args[2]; | |
2700 | #endif | |
32f4334d | 2701 | Lisp_Object handler; |
b1d1b865 RS |
2702 | Lisp_Object encoded_filename, encoded_linkname; |
2703 | struct gcpro gcpro1, gcpro2, gcpro3, gcpro4; | |
570d7624 | 2704 | |
b1d1b865 RS |
2705 | GCPRO4 (filename, linkname, encoded_filename, encoded_linkname); |
2706 | encoded_filename = encoded_linkname = Qnil; | |
570d7624 | 2707 | CHECK_STRING (filename, 0); |
e5d77022 | 2708 | CHECK_STRING (linkname, 1); |
d9bc1c99 RS |
2709 | /* If the link target has a ~, we must expand it to get |
2710 | a truly valid file name. Otherwise, do not expand; | |
2711 | we want to permit links to relative file names. */ | |
2712 | if (XSTRING (filename)->data[0] == '~') | |
2713 | filename = Fexpand_file_name (filename, Qnil); | |
e5d77022 | 2714 | linkname = Fexpand_file_name (linkname, Qnil); |
32f4334d RS |
2715 | |
2716 | /* If the file name has special constructs in it, | |
2717 | call the corresponding file handler. */ | |
49307295 | 2718 | handler = Ffind_file_name_handler (filename, Qmake_symbolic_link); |
32f4334d | 2719 | if (!NILP (handler)) |
36712b0a KH |
2720 | RETURN_UNGCPRO (call4 (handler, Qmake_symbolic_link, filename, |
2721 | linkname, ok_if_already_exists)); | |
32f4334d | 2722 | |
adc6741c RS |
2723 | /* If the new link name has special constructs in it, |
2724 | call the corresponding file handler. */ | |
2725 | handler = Ffind_file_name_handler (linkname, Qmake_symbolic_link); | |
2726 | if (!NILP (handler)) | |
2727 | RETURN_UNGCPRO (call4 (handler, Qmake_symbolic_link, filename, | |
2728 | linkname, ok_if_already_exists)); | |
2729 | ||
b1d1b865 RS |
2730 | encoded_filename = ENCODE_FILE (filename); |
2731 | encoded_linkname = ENCODE_FILE (linkname); | |
2732 | ||
265a9e55 | 2733 | if (NILP (ok_if_already_exists) |
93c30b5f | 2734 | || INTEGERP (ok_if_already_exists)) |
b1d1b865 | 2735 | barf_or_query_if_file_exists (encoded_linkname, "make it a link", |
b8b29dc9 | 2736 | INTEGERP (ok_if_already_exists), 0, 0); |
b1d1b865 RS |
2737 | if (0 > symlink (XSTRING (encoded_filename)->data, |
2738 | XSTRING (encoded_linkname)->data)) | |
570d7624 JB |
2739 | { |
2740 | /* If we didn't complain already, silently delete existing file. */ | |
2741 | if (errno == EEXIST) | |
2742 | { | |
b1d1b865 RS |
2743 | unlink (XSTRING (encoded_linkname)->data); |
2744 | if (0 <= symlink (XSTRING (encoded_filename)->data, | |
2745 | XSTRING (encoded_linkname)->data)) | |
1a04498e KH |
2746 | { |
2747 | UNGCPRO; | |
2748 | return Qnil; | |
2749 | } | |
570d7624 JB |
2750 | } |
2751 | ||
2752 | #ifdef NO_ARG_ARRAY | |
2753 | args[0] = filename; | |
e5d77022 | 2754 | args[1] = linkname; |
570d7624 JB |
2755 | report_file_error ("Making symbolic link", Flist (2, args)); |
2756 | #else | |
2757 | report_file_error ("Making symbolic link", Flist (2, &filename)); | |
2758 | #endif | |
2759 | } | |
2760 | UNGCPRO; | |
2761 | return Qnil; | |
2762 | } | |
2763 | #endif /* S_IFLNK */ | |
2764 | ||
2765 | #ifdef VMS | |
2766 | ||
2767 | DEFUN ("define-logical-name", Fdefine_logical_name, Sdefine_logical_name, | |
2768 | 2, 2, "sDefine logical name: \nsDefine logical name %s as: ", | |
2769 | "Define the job-wide logical name NAME to have the value STRING.\n\ | |
2770 | If STRING is nil or a null string, the logical name NAME is deleted.") | |
3b7f6e60 EN |
2771 | (name, string) |
2772 | Lisp_Object name; | |
570d7624 JB |
2773 | Lisp_Object string; |
2774 | { | |
3b7f6e60 | 2775 | CHECK_STRING (name, 0); |
265a9e55 | 2776 | if (NILP (string)) |
3b7f6e60 | 2777 | delete_logical_name (XSTRING (name)->data); |
570d7624 JB |
2778 | else |
2779 | { | |
2780 | CHECK_STRING (string, 1); | |
2781 | ||
2782 | if (XSTRING (string)->size == 0) | |
3b7f6e60 | 2783 | delete_logical_name (XSTRING (name)->data); |
570d7624 | 2784 | else |
3b7f6e60 | 2785 | define_logical_name (XSTRING (name)->data, XSTRING (string)->data); |
570d7624 JB |
2786 | } |
2787 | ||
2788 | return string; | |
2789 | } | |
2790 | #endif /* VMS */ | |
2791 | ||
2792 | #ifdef HPUX_NET | |
2793 | ||
2794 | DEFUN ("sysnetunam", Fsysnetunam, Ssysnetunam, 2, 2, 0, | |
2795 | "Open a network connection to PATH using LOGIN as the login string.") | |
2796 | (path, login) | |
2797 | Lisp_Object path, login; | |
2798 | { | |
2799 | int netresult; | |
199607e4 | 2800 | |
570d7624 | 2801 | CHECK_STRING (path, 0); |
199607e4 RS |
2802 | CHECK_STRING (login, 0); |
2803 | ||
570d7624 JB |
2804 | netresult = netunam (XSTRING (path)->data, XSTRING (login)->data); |
2805 | ||
2806 | if (netresult == -1) | |
2807 | return Qnil; | |
2808 | else | |
2809 | return Qt; | |
2810 | } | |
2811 | #endif /* HPUX_NET */ | |
2812 | \f | |
2813 | DEFUN ("file-name-absolute-p", Ffile_name_absolute_p, Sfile_name_absolute_p, | |
2814 | 1, 1, 0, | |
199607e4 | 2815 | "Return t if file FILENAME specifies an absolute file name.\n\ |
570d7624 JB |
2816 | On Unix, this is a name starting with a `/' or a `~'.") |
2817 | (filename) | |
2818 | Lisp_Object filename; | |
2819 | { | |
2820 | unsigned char *ptr; | |
2821 | ||
2822 | CHECK_STRING (filename, 0); | |
2823 | ptr = XSTRING (filename)->data; | |
5e570b75 | 2824 | if (IS_DIRECTORY_SEP (*ptr) || *ptr == '~' |
570d7624 JB |
2825 | #ifdef VMS |
2826 | /* ??? This criterion is probably wrong for '<'. */ | |
2827 | || index (ptr, ':') || index (ptr, '<') | |
2828 | || (*ptr == '[' && (ptr[1] != '-' || (ptr[2] != '.' && ptr[2] != ']')) | |
2829 | && ptr[1] != '.') | |
2830 | #endif /* VMS */ | |
5e570b75 | 2831 | #ifdef DOS_NT |
199607e4 | 2832 | || (IS_DRIVE (*ptr) && ptr[1] == ':' && IS_DIRECTORY_SEP (ptr[2])) |
4c3c22f3 | 2833 | #endif |
570d7624 JB |
2834 | ) |
2835 | return Qt; | |
2836 | else | |
2837 | return Qnil; | |
2838 | } | |
3beeedfe RS |
2839 | \f |
2840 | /* Return nonzero if file FILENAME exists and can be executed. */ | |
2841 | ||
2842 | static int | |
2843 | check_executable (filename) | |
2844 | char *filename; | |
2845 | { | |
3be3c08e RS |
2846 | #ifdef DOS_NT |
2847 | int len = strlen (filename); | |
2848 | char *suffix; | |
2849 | struct stat st; | |
2850 | if (stat (filename, &st) < 0) | |
2851 | return 0; | |
34ead71a | 2852 | #if defined (WINDOWSNT) || (defined (MSDOS) && __DJGPP__ > 1) |
199607e4 RS |
2853 | return ((st.st_mode & S_IEXEC) != 0); |
2854 | #else | |
3be3c08e RS |
2855 | return (S_ISREG (st.st_mode) |
2856 | && len >= 5 | |
2857 | && (stricmp ((suffix = filename + len-4), ".com") == 0 | |
2858 | || stricmp (suffix, ".exe") == 0 | |
2dc3be7e RS |
2859 | || stricmp (suffix, ".bat") == 0) |
2860 | || (st.st_mode & S_IFMT) == S_IFDIR); | |
199607e4 | 2861 | #endif /* not WINDOWSNT */ |
3be3c08e | 2862 | #else /* not DOS_NT */ |
de0be7dd RS |
2863 | #ifdef HAVE_EUIDACCESS |
2864 | return (euidaccess (filename, 1) >= 0); | |
3beeedfe RS |
2865 | #else |
2866 | /* Access isn't quite right because it uses the real uid | |
2867 | and we really want to test with the effective uid. | |
2868 | But Unix doesn't give us a right way to do it. */ | |
2869 | return (access (filename, 1) >= 0); | |
2870 | #endif | |
3be3c08e | 2871 | #endif /* not DOS_NT */ |
3beeedfe RS |
2872 | } |
2873 | ||
2874 | /* Return nonzero if file FILENAME exists and can be written. */ | |
2875 | ||
2876 | static int | |
2877 | check_writable (filename) | |
2878 | char *filename; | |
2879 | { | |
3be3c08e RS |
2880 | #ifdef MSDOS |
2881 | struct stat st; | |
2882 | if (stat (filename, &st) < 0) | |
2883 | return 0; | |
2884 | return (st.st_mode & S_IWRITE || (st.st_mode & S_IFMT) == S_IFDIR); | |
2885 | #else /* not MSDOS */ | |
41f3fb38 KH |
2886 | #ifdef HAVE_EUIDACCESS |
2887 | return (euidaccess (filename, 2) >= 0); | |
3beeedfe RS |
2888 | #else |
2889 | /* Access isn't quite right because it uses the real uid | |
2890 | and we really want to test with the effective uid. | |
2891 | But Unix doesn't give us a right way to do it. | |
2892 | Opening with O_WRONLY could work for an ordinary file, | |
2893 | but would lose for directories. */ | |
2894 | return (access (filename, 2) >= 0); | |
2895 | #endif | |
3be3c08e | 2896 | #endif /* not MSDOS */ |
3beeedfe | 2897 | } |
570d7624 JB |
2898 | |
2899 | DEFUN ("file-exists-p", Ffile_exists_p, Sfile_exists_p, 1, 1, 0, | |
2900 | "Return t if file FILENAME exists. (This does not mean you can read it.)\n\ | |
2901 | See also `file-readable-p' and `file-attributes'.") | |
2902 | (filename) | |
2903 | Lisp_Object filename; | |
2904 | { | |
199607e4 | 2905 | Lisp_Object absname; |
32f4334d | 2906 | Lisp_Object handler; |
4018b5ef | 2907 | struct stat statbuf; |
570d7624 JB |
2908 | |
2909 | CHECK_STRING (filename, 0); | |
199607e4 | 2910 | absname = Fexpand_file_name (filename, Qnil); |
32f4334d RS |
2911 | |
2912 | /* If the file name has special constructs in it, | |
2913 | call the corresponding file handler. */ | |
199607e4 | 2914 | handler = Ffind_file_name_handler (absname, Qfile_exists_p); |
32f4334d | 2915 | if (!NILP (handler)) |
199607e4 | 2916 | return call2 (handler, Qfile_exists_p, absname); |
32f4334d | 2917 | |
b1d1b865 RS |
2918 | absname = ENCODE_FILE (absname); |
2919 | ||
199607e4 | 2920 | return (stat (XSTRING (absname)->data, &statbuf) >= 0) ? Qt : Qnil; |
570d7624 JB |
2921 | } |
2922 | ||
2923 | DEFUN ("file-executable-p", Ffile_executable_p, Sfile_executable_p, 1, 1, 0, | |
2924 | "Return t if FILENAME can be executed by you.\n\ | |
8b235fde | 2925 | For a directory, this means you can access files in that directory.") |
570d7624 JB |
2926 | (filename) |
2927 | Lisp_Object filename; | |
2928 | ||
2929 | { | |
199607e4 | 2930 | Lisp_Object absname; |
32f4334d | 2931 | Lisp_Object handler; |
570d7624 JB |
2932 | |
2933 | CHECK_STRING (filename, 0); | |
199607e4 | 2934 | absname = Fexpand_file_name (filename, Qnil); |
32f4334d RS |
2935 | |
2936 | /* If the file name has special constructs in it, | |
2937 | call the corresponding file handler. */ | |
199607e4 | 2938 | handler = Ffind_file_name_handler (absname, Qfile_executable_p); |
32f4334d | 2939 | if (!NILP (handler)) |
199607e4 | 2940 | return call2 (handler, Qfile_executable_p, absname); |
32f4334d | 2941 | |
b1d1b865 RS |
2942 | absname = ENCODE_FILE (absname); |
2943 | ||
199607e4 | 2944 | return (check_executable (XSTRING (absname)->data) ? Qt : Qnil); |
570d7624 JB |
2945 | } |
2946 | ||
2947 | DEFUN ("file-readable-p", Ffile_readable_p, Sfile_readable_p, 1, 1, 0, | |
2948 | "Return t if file FILENAME exists and you can read it.\n\ | |
2949 | See also `file-exists-p' and `file-attributes'.") | |
2950 | (filename) | |
2951 | Lisp_Object filename; | |
2952 | { | |
199607e4 | 2953 | Lisp_Object absname; |
32f4334d | 2954 | Lisp_Object handler; |
4018b5ef | 2955 | int desc; |
bb369dc6 RS |
2956 | int flags; |
2957 | struct stat statbuf; | |
570d7624 JB |
2958 | |
2959 | CHECK_STRING (filename, 0); | |
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_readable_p); |
32f4334d | 2965 | if (!NILP (handler)) |
199607e4 | 2966 | return call2 (handler, Qfile_readable_p, absname); |
32f4334d | 2967 | |
b1d1b865 RS |
2968 | absname = ENCODE_FILE (absname); |
2969 | ||
fb4c6c96 AC |
2970 | #if defined(DOS_NT) || defined(macintosh) |
2971 | /* Under MS-DOS, Windows, and Macintosh, open does not work for | |
2972 | directories. */ | |
199607e4 | 2973 | if (access (XSTRING (absname)->data, 0) == 0) |
a8a7d065 RS |
2974 | return Qt; |
2975 | return Qnil; | |
fb4c6c96 | 2976 | #else /* not DOS_NT and not macintosh */ |
bb369dc6 RS |
2977 | flags = O_RDONLY; |
2978 | #if defined (S_ISFIFO) && defined (O_NONBLOCK) | |
2979 | /* Opening a fifo without O_NONBLOCK can wait. | |
2980 | We don't want to wait. But we don't want to mess wth O_NONBLOCK | |
2981 | except in the case of a fifo, on a system which handles it. */ | |
2982 | desc = stat (XSTRING (absname)->data, &statbuf); | |
2983 | if (desc < 0) | |
2984 | return Qnil; | |
2985 | if (S_ISFIFO (statbuf.st_mode)) | |
2986 | flags |= O_NONBLOCK; | |
2987 | #endif | |
68c45bf0 | 2988 | desc = emacs_open (XSTRING (absname)->data, flags, 0); |
4018b5ef RS |
2989 | if (desc < 0) |
2990 | return Qnil; | |
68c45bf0 | 2991 | emacs_close (desc); |
4018b5ef | 2992 | return Qt; |
fb4c6c96 | 2993 | #endif /* not DOS_NT and not macintosh */ |
570d7624 JB |
2994 | } |
2995 | ||
f793dc6c RS |
2996 | /* Having this before file-symlink-p mysteriously caused it to be forgotten |
2997 | on the RT/PC. */ | |
2998 | DEFUN ("file-writable-p", Ffile_writable_p, Sfile_writable_p, 1, 1, 0, | |
2999 | "Return t if file FILENAME can be written or created by you.") | |
3000 | (filename) | |
3001 | Lisp_Object filename; | |
3002 | { | |
b1d1b865 | 3003 | Lisp_Object absname, dir, encoded; |
f793dc6c RS |
3004 | Lisp_Object handler; |
3005 | struct stat statbuf; | |
3006 | ||
3007 | CHECK_STRING (filename, 0); | |
199607e4 | 3008 | absname = Fexpand_file_name (filename, Qnil); |
f793dc6c RS |
3009 | |
3010 | /* If the file name has special constructs in it, | |
3011 | call the corresponding file handler. */ | |
199607e4 | 3012 | handler = Ffind_file_name_handler (absname, Qfile_writable_p); |
f793dc6c | 3013 | if (!NILP (handler)) |
199607e4 | 3014 | return call2 (handler, Qfile_writable_p, absname); |
f793dc6c | 3015 | |
b1d1b865 RS |
3016 | encoded = ENCODE_FILE (absname); |
3017 | if (stat (XSTRING (encoded)->data, &statbuf) >= 0) | |
3018 | return (check_writable (XSTRING (encoded)->data) | |
f793dc6c | 3019 | ? Qt : Qnil); |
b1d1b865 | 3020 | |
199607e4 | 3021 | dir = Ffile_name_directory (absname); |
f793dc6c RS |
3022 | #ifdef VMS |
3023 | if (!NILP (dir)) | |
3024 | dir = Fdirectory_file_name (dir); | |
3025 | #endif /* VMS */ | |
3026 | #ifdef MSDOS | |
3027 | if (!NILP (dir)) | |
3028 | dir = Fdirectory_file_name (dir); | |
3029 | #endif /* MSDOS */ | |
b1d1b865 RS |
3030 | |
3031 | dir = ENCODE_FILE (dir); | |
e3e8a75a GM |
3032 | #ifdef WINDOWSNT |
3033 | /* The read-only attribute of the parent directory doesn't affect | |
3034 | whether a file or directory can be created within it. Some day we | |
3035 | should check ACLs though, which do affect this. */ | |
3036 | if (stat (XSTRING (dir)->data, &statbuf) < 0) | |
3037 | return Qnil; | |
3038 | return (statbuf.st_mode & S_IFMT) == S_IFDIR ? Qt : Qnil; | |
3039 | #else | |
f793dc6c RS |
3040 | return (check_writable (!NILP (dir) ? (char *) XSTRING (dir)->data : "") |
3041 | ? Qt : Qnil); | |
e3e8a75a | 3042 | #endif |
f793dc6c RS |
3043 | } |
3044 | \f | |
1f8653eb RS |
3045 | DEFUN ("access-file", Faccess_file, Saccess_file, 2, 2, 0, |
3046 | "Access file FILENAME, and get an error if that does not work.\n\ | |
3047 | The second argument STRING is used in the error message.\n\ | |
3048 | If there is no error, we return nil.") | |
3049 | (filename, string) | |
3050 | Lisp_Object filename, string; | |
3051 | { | |
b1d1b865 | 3052 | Lisp_Object handler, encoded_filename; |
1f8653eb RS |
3053 | int fd; |
3054 | ||
3055 | CHECK_STRING (filename, 0); | |
a79485af | 3056 | CHECK_STRING (string, 1); |
1f8653eb RS |
3057 | |
3058 | /* If the file name has special constructs in it, | |
3059 | call the corresponding file handler. */ | |
3060 | handler = Ffind_file_name_handler (filename, Qaccess_file); | |
3061 | if (!NILP (handler)) | |
3062 | return call3 (handler, Qaccess_file, filename, string); | |
3063 | ||
b1d1b865 RS |
3064 | encoded_filename = ENCODE_FILE (filename); |
3065 | ||
68c45bf0 | 3066 | fd = emacs_open (XSTRING (encoded_filename)->data, O_RDONLY, 0); |
1f8653eb RS |
3067 | if (fd < 0) |
3068 | report_file_error (XSTRING (string)->data, Fcons (filename, Qnil)); | |
68c45bf0 | 3069 | emacs_close (fd); |
1f8653eb RS |
3070 | |
3071 | return Qnil; | |
3072 | } | |
3073 | \f | |
570d7624 | 3074 | DEFUN ("file-symlink-p", Ffile_symlink_p, Sfile_symlink_p, 1, 1, 0, |
89de89c7 RS |
3075 | "Return non-nil if file FILENAME is the name of a symbolic link.\n\ |
3076 | The value is the name of the file to which it is linked.\n\ | |
3077 | Otherwise returns nil.") | |
570d7624 JB |
3078 | (filename) |
3079 | Lisp_Object filename; | |
3080 | { | |
3081 | #ifdef S_IFLNK | |
3082 | char *buf; | |
3083 | int bufsize; | |
3084 | int valsize; | |
3085 | Lisp_Object val; | |
32f4334d | 3086 | Lisp_Object handler; |
570d7624 JB |
3087 | |
3088 | CHECK_STRING (filename, 0); | |
3089 | filename = Fexpand_file_name (filename, Qnil); | |
3090 | ||
32f4334d RS |
3091 | /* If the file name has special constructs in it, |
3092 | call the corresponding file handler. */ | |
49307295 | 3093 | handler = Ffind_file_name_handler (filename, Qfile_symlink_p); |
32f4334d RS |
3094 | if (!NILP (handler)) |
3095 | return call2 (handler, Qfile_symlink_p, filename); | |
3096 | ||
b1d1b865 RS |
3097 | filename = ENCODE_FILE (filename); |
3098 | ||
81c3310d GM |
3099 | bufsize = 50; |
3100 | buf = NULL; | |
3101 | do | |
570d7624 | 3102 | { |
81c3310d GM |
3103 | bufsize *= 2; |
3104 | buf = (char *) xrealloc (buf, bufsize); | |
570d7624 | 3105 | bzero (buf, bufsize); |
81c3310d GM |
3106 | |
3107 | errno = 0; | |
570d7624 | 3108 | valsize = readlink (XSTRING (filename)->data, buf, bufsize); |
bcdd93b3 GM |
3109 | if (valsize == -1) |
3110 | { | |
81c3310d GM |
3111 | #ifdef ERANGE |
3112 | /* HP-UX reports ERANGE if buffer is too small. */ | |
bcdd93b3 GM |
3113 | if (errno == ERANGE) |
3114 | valsize = bufsize; | |
3115 | else | |
81c3310d | 3116 | #endif |
bcdd93b3 GM |
3117 | { |
3118 | xfree (buf); | |
3119 | return Qnil; | |
3120 | } | |
81c3310d | 3121 | } |
570d7624 | 3122 | } |
81c3310d GM |
3123 | while (valsize >= bufsize); |
3124 | ||
570d7624 | 3125 | val = make_string (buf, valsize); |
69ac1891 GM |
3126 | if (buf[0] == '/' && index (buf, ':')) |
3127 | val = concat2 (build_string ("/:"), val); | |
9ac0d9e0 | 3128 | xfree (buf); |
cd913586 KH |
3129 | val = DECODE_FILE (val); |
3130 | return val; | |
570d7624 JB |
3131 | #else /* not S_IFLNK */ |
3132 | return Qnil; | |
3133 | #endif /* not S_IFLNK */ | |
3134 | } | |
3135 | ||
570d7624 | 3136 | DEFUN ("file-directory-p", Ffile_directory_p, Sfile_directory_p, 1, 1, 0, |
3be6c6a0 DL |
3137 | "Return t if FILENAME names an existing directory.\n\ |
3138 | Symbolic links to directories count as directories.\n\ | |
3139 | See `file-symlink-p' to distinguish symlinks.") | |
570d7624 JB |
3140 | (filename) |
3141 | Lisp_Object filename; | |
3142 | { | |
199607e4 | 3143 | register Lisp_Object absname; |
570d7624 | 3144 | struct stat st; |
32f4334d | 3145 | Lisp_Object handler; |
570d7624 | 3146 | |
199607e4 | 3147 | absname = expand_and_dir_to_file (filename, current_buffer->directory); |
570d7624 | 3148 | |
32f4334d RS |
3149 | /* If the file name has special constructs in it, |
3150 | call the corresponding file handler. */ | |
199607e4 | 3151 | handler = Ffind_file_name_handler (absname, Qfile_directory_p); |
32f4334d | 3152 | if (!NILP (handler)) |
199607e4 | 3153 | return call2 (handler, Qfile_directory_p, absname); |
32f4334d | 3154 | |
b1d1b865 RS |
3155 | absname = ENCODE_FILE (absname); |
3156 | ||
199607e4 | 3157 | if (stat (XSTRING (absname)->data, &st) < 0) |
570d7624 JB |
3158 | return Qnil; |
3159 | return (st.st_mode & S_IFMT) == S_IFDIR ? Qt : Qnil; | |
3160 | } | |
3161 | ||
b72dea2a JB |
3162 | DEFUN ("file-accessible-directory-p", Ffile_accessible_directory_p, Sfile_accessible_directory_p, 1, 1, 0, |
3163 | "Return t if file FILENAME is the name of a directory as a file,\n\ | |
3164 | and files in that directory can be opened by you. In order to use a\n\ | |
3165 | directory as a buffer's current directory, this predicate must return true.\n\ | |
3166 | A directory name spec may be given instead; then the value is t\n\ | |
3167 | if the directory so specified exists and really is a readable and\n\ | |
3168 | searchable directory.") | |
3169 | (filename) | |
3170 | Lisp_Object filename; | |
3171 | { | |
32f4334d | 3172 | Lisp_Object handler; |
1a04498e | 3173 | int tem; |
d26859eb | 3174 | struct gcpro gcpro1; |
32f4334d RS |
3175 | |
3176 | /* If the file name has special constructs in it, | |
3177 | call the corresponding file handler. */ | |
49307295 | 3178 | handler = Ffind_file_name_handler (filename, Qfile_accessible_directory_p); |
32f4334d RS |
3179 | if (!NILP (handler)) |
3180 | return call2 (handler, Qfile_accessible_directory_p, filename); | |
3181 | ||
d26859eb KH |
3182 | /* It's an unlikely combination, but yes we really do need to gcpro: |
3183 | Suppose that file-accessible-directory-p has no handler, but | |
3184 | file-directory-p does have a handler; this handler causes a GC which | |
3185 | relocates the string in `filename'; and finally file-directory-p | |
3186 | returns non-nil. Then we would end up passing a garbaged string | |
3187 | to file-executable-p. */ | |
3188 | GCPRO1 (filename); | |
1a04498e KH |
3189 | tem = (NILP (Ffile_directory_p (filename)) |
3190 | || NILP (Ffile_executable_p (filename))); | |
d26859eb | 3191 | UNGCPRO; |
1a04498e | 3192 | return tem ? Qnil : Qt; |
b72dea2a JB |
3193 | } |
3194 | ||
f793dc6c RS |
3195 | DEFUN ("file-regular-p", Ffile_regular_p, Sfile_regular_p, 1, 1, 0, |
3196 | "Return t if file FILENAME is the name of a regular file.\n\ | |
3197 | This is the sort of file that holds an ordinary stream of data bytes.") | |
3198 | (filename) | |
3199 | Lisp_Object filename; | |
3200 | { | |
199607e4 | 3201 | register Lisp_Object absname; |
f793dc6c RS |
3202 | struct stat st; |
3203 | Lisp_Object handler; | |
3204 | ||
199607e4 | 3205 | absname = expand_and_dir_to_file (filename, current_buffer->directory); |
f793dc6c RS |
3206 | |
3207 | /* If the file name has special constructs in it, | |
3208 | call the corresponding file handler. */ | |
199607e4 | 3209 | handler = Ffind_file_name_handler (absname, Qfile_regular_p); |
f793dc6c | 3210 | if (!NILP (handler)) |
199607e4 | 3211 | return call2 (handler, Qfile_regular_p, absname); |
f793dc6c | 3212 | |
b1d1b865 RS |
3213 | absname = ENCODE_FILE (absname); |
3214 | ||
c1c4693e RS |
3215 | #ifdef WINDOWSNT |
3216 | { | |
3217 | int result; | |
3218 | Lisp_Object tem = Vw32_get_true_file_attributes; | |
3219 | ||
3220 | /* Tell stat to use expensive method to get accurate info. */ | |
3221 | Vw32_get_true_file_attributes = Qt; | |
3222 | result = stat (XSTRING (absname)->data, &st); | |
3223 | Vw32_get_true_file_attributes = tem; | |
3224 | ||
3225 | if (result < 0) | |
3226 | return Qnil; | |
3227 | return (st.st_mode & S_IFMT) == S_IFREG ? Qt : Qnil; | |
3228 | } | |
3229 | #else | |
4cd8344a | 3230 | if (stat (XSTRING (absname)->data, &st) < 0) |
f793dc6c RS |
3231 | return Qnil; |
3232 | return (st.st_mode & S_IFMT) == S_IFREG ? Qt : Qnil; | |
c1c4693e | 3233 | #endif |
f793dc6c RS |
3234 | } |
3235 | \f | |
570d7624 | 3236 | DEFUN ("file-modes", Ffile_modes, Sfile_modes, 1, 1, 0, |
3b7f6e60 | 3237 | "Return mode bits of file named FILENAME, as an integer.") |
570d7624 JB |
3238 | (filename) |
3239 | Lisp_Object filename; | |
3240 | { | |
199607e4 | 3241 | Lisp_Object absname; |
570d7624 | 3242 | struct stat st; |
32f4334d | 3243 | Lisp_Object handler; |
570d7624 | 3244 | |
199607e4 | 3245 | absname = expand_and_dir_to_file (filename, current_buffer->directory); |
570d7624 | 3246 | |
32f4334d RS |
3247 | /* If the file name has special constructs in it, |
3248 | call the corresponding file handler. */ | |
199607e4 | 3249 | handler = Ffind_file_name_handler (absname, Qfile_modes); |
32f4334d | 3250 | if (!NILP (handler)) |
199607e4 | 3251 | return call2 (handler, Qfile_modes, absname); |
32f4334d | 3252 | |
b1d1b865 RS |
3253 | absname = ENCODE_FILE (absname); |
3254 | ||
199607e4 | 3255 | if (stat (XSTRING (absname)->data, &st) < 0) |
570d7624 | 3256 | return Qnil; |
34ead71a | 3257 | #if defined (MSDOS) && __DJGPP__ < 2 |
199607e4 | 3258 | if (check_executable (XSTRING (absname)->data)) |
3be3c08e | 3259 | st.st_mode |= S_IEXEC; |
34ead71a | 3260 | #endif /* MSDOS && __DJGPP__ < 2 */ |
3ace87e3 | 3261 | |
570d7624 JB |
3262 | return make_number (st.st_mode & 07777); |
3263 | } | |
3264 | ||
3265 | DEFUN ("set-file-modes", Fset_file_modes, Sset_file_modes, 2, 2, 0, | |
3b7f6e60 | 3266 | "Set mode bits of file named FILENAME to MODE (an integer).\n\ |
570d7624 JB |
3267 | Only the 12 low bits of MODE are used.") |
3268 | (filename, mode) | |
3269 | Lisp_Object filename, mode; | |
3270 | { | |
b1d1b865 | 3271 | Lisp_Object absname, encoded_absname; |
32f4334d | 3272 | Lisp_Object handler; |
570d7624 | 3273 | |
199607e4 | 3274 | absname = Fexpand_file_name (filename, current_buffer->directory); |
570d7624 JB |
3275 | CHECK_NUMBER (mode, 1); |
3276 | ||
32f4334d RS |
3277 | /* If the file name has special constructs in it, |
3278 | call the corresponding file handler. */ | |
199607e4 | 3279 | handler = Ffind_file_name_handler (absname, Qset_file_modes); |
32f4334d | 3280 | if (!NILP (handler)) |
199607e4 | 3281 | return call3 (handler, Qset_file_modes, absname, mode); |
32f4334d | 3282 | |
b1d1b865 RS |
3283 | encoded_absname = ENCODE_FILE (absname); |
3284 | ||
3285 | if (chmod (XSTRING (encoded_absname)->data, XINT (mode)) < 0) | |
199607e4 | 3286 | report_file_error ("Doing chmod", Fcons (absname, Qnil)); |
570d7624 JB |
3287 | |
3288 | return Qnil; | |
3289 | } | |
3290 | ||
c24e9a53 | 3291 | DEFUN ("set-default-file-modes", Fset_default_file_modes, Sset_default_file_modes, 1, 1, 0, |
5f85ea58 RS |
3292 | "Set the file permission bits for newly created files.\n\ |
3293 | The argument MODE should be an integer; only the low 9 bits are used.\n\ | |
36a8c287 | 3294 | This setting is inherited by subprocesses.") |
5f85ea58 RS |
3295 | (mode) |
3296 | Lisp_Object mode; | |
36a8c287 | 3297 | { |
5f85ea58 | 3298 | CHECK_NUMBER (mode, 0); |
199607e4 | 3299 | |
5f85ea58 | 3300 | umask ((~ XINT (mode)) & 0777); |
36a8c287 JB |
3301 | |
3302 | return Qnil; | |
3303 | } | |
3304 | ||
c24e9a53 | 3305 | DEFUN ("default-file-modes", Fdefault_file_modes, Sdefault_file_modes, 0, 0, 0, |
5f85ea58 RS |
3306 | "Return the default file protection for created files.\n\ |
3307 | The value is an integer.") | |
36a8c287 JB |
3308 | () |
3309 | { | |
5f85ea58 RS |
3310 | int realmask; |
3311 | Lisp_Object value; | |
36a8c287 | 3312 | |
5f85ea58 RS |
3313 | realmask = umask (0); |
3314 | umask (realmask); | |
36a8c287 | 3315 | |
46283abe | 3316 | XSETINT (value, (~ realmask) & 0777); |
5f85ea58 | 3317 | return value; |
36a8c287 | 3318 | } |
5df5e07c | 3319 | |
f793dc6c | 3320 | \f |
5df5e07c GM |
3321 | #ifdef __NetBSD__ |
3322 | #define unix 42 | |
3323 | #endif | |
85ffea93 | 3324 | |
5df5e07c | 3325 | #ifdef unix |
85ffea93 RS |
3326 | DEFUN ("unix-sync", Funix_sync, Sunix_sync, 0, 0, "", |
3327 | "Tell Unix to finish all pending disk updates.") | |
3328 | () | |
3329 | { | |
3330 | sync (); | |
3331 | return Qnil; | |
3332 | } | |
3333 | ||
3334 | #endif /* unix */ | |
3335 | ||
570d7624 JB |
3336 | DEFUN ("file-newer-than-file-p", Ffile_newer_than_file_p, Sfile_newer_than_file_p, 2, 2, 0, |
3337 | "Return t if file FILE1 is newer than file FILE2.\n\ | |
3338 | If FILE1 does not exist, the answer is nil;\n\ | |
3339 | otherwise, if FILE2 does not exist, the answer is t.") | |
3340 | (file1, file2) | |
3341 | Lisp_Object file1, file2; | |
3342 | { | |
199607e4 | 3343 | Lisp_Object absname1, absname2; |
570d7624 JB |
3344 | struct stat st; |
3345 | int mtime1; | |
32f4334d | 3346 | Lisp_Object handler; |
09121adc | 3347 | struct gcpro gcpro1, gcpro2; |
570d7624 JB |
3348 | |
3349 | CHECK_STRING (file1, 0); | |
3350 | CHECK_STRING (file2, 0); | |
3351 | ||
199607e4 RS |
3352 | absname1 = Qnil; |
3353 | GCPRO2 (absname1, file2); | |
3354 | absname1 = expand_and_dir_to_file (file1, current_buffer->directory); | |
3355 | absname2 = expand_and_dir_to_file (file2, current_buffer->directory); | |
09121adc | 3356 | UNGCPRO; |
570d7624 | 3357 | |
32f4334d RS |
3358 | /* If the file name has special constructs in it, |
3359 | call the corresponding file handler. */ | |
199607e4 | 3360 | handler = Ffind_file_name_handler (absname1, Qfile_newer_than_file_p); |
51cf6d37 | 3361 | if (NILP (handler)) |
199607e4 | 3362 | handler = Ffind_file_name_handler (absname2, Qfile_newer_than_file_p); |
32f4334d | 3363 | if (!NILP (handler)) |
199607e4 | 3364 | return call3 (handler, Qfile_newer_than_file_p, absname1, absname2); |
32f4334d | 3365 | |
b1d1b865 RS |
3366 | GCPRO2 (absname1, absname2); |
3367 | absname1 = ENCODE_FILE (absname1); | |
3368 | absname2 = ENCODE_FILE (absname2); | |
3369 | UNGCPRO; | |
3370 | ||
199607e4 | 3371 | if (stat (XSTRING (absname1)->data, &st) < 0) |
570d7624 JB |
3372 | return Qnil; |
3373 | ||
3374 | mtime1 = st.st_mtime; | |
3375 | ||
199607e4 | 3376 | if (stat (XSTRING (absname2)->data, &st) < 0) |
570d7624 JB |
3377 | return Qt; |
3378 | ||
3379 | return (mtime1 > st.st_mtime) ? Qt : Qnil; | |
3380 | } | |
3381 | \f | |
5e570b75 | 3382 | #ifdef DOS_NT |
4c3c22f3 | 3383 | Lisp_Object Qfind_buffer_file_type; |
5e570b75 | 3384 | #endif /* DOS_NT */ |
4c3c22f3 | 3385 | |
6fdaa9a0 KH |
3386 | #ifndef READ_BUF_SIZE |
3387 | #define READ_BUF_SIZE (64 << 10) | |
3388 | #endif | |
3389 | ||
98a7d268 KH |
3390 | extern void adjust_markers_for_delete P_ ((int, int, int, int)); |
3391 | ||
3392 | /* This function is called after Lisp functions to decide a coding | |
3393 | system are called, or when they cause an error. Before they are | |
3394 | called, the current buffer is set unibyte and it contains only a | |
3395 | newly inserted text (thus the buffer was empty before the | |
3396 | insertion). | |
3397 | ||
3398 | The functions may set markers, overlays, text properties, or even | |
3399 | alter the buffer contents, change the current buffer. | |
3400 | ||
3401 | Here, we reset all those changes by: | |
3402 | o set back the current buffer. | |
3403 | o move all markers and overlays to BEG. | |
3404 | o remove all text properties. | |
3405 | o set back the buffer multibyteness. */ | |
f736ffbf KH |
3406 | |
3407 | static Lisp_Object | |
98a7d268 KH |
3408 | decide_coding_unwind (unwind_data) |
3409 | Lisp_Object unwind_data; | |
f736ffbf | 3410 | { |
98a7d268 | 3411 | Lisp_Object multibyte, undo_list, buffer; |
f736ffbf | 3412 | |
98a7d268 KH |
3413 | multibyte = XCAR (unwind_data); |
3414 | unwind_data = XCDR (unwind_data); | |
3415 | undo_list = XCAR (unwind_data); | |
3416 | buffer = XCDR (unwind_data); | |
3417 | ||
3418 | if (current_buffer != XBUFFER (buffer)) | |
3419 | set_buffer_internal (XBUFFER (buffer)); | |
3420 | adjust_markers_for_delete (BEG, BEG_BYTE, Z, Z_BYTE); | |
3421 | adjust_overlays_for_delete (BEG, Z - BEG); | |
3422 | BUF_INTERVALS (current_buffer) = 0; | |
3423 | TEMP_SET_PT_BOTH (BEG, BEG_BYTE); | |
3424 | ||
3425 | /* Now we are safe to change the buffer's multibyteness directly. */ | |
3426 | current_buffer->enable_multibyte_characters = multibyte; | |
3427 | current_buffer->undo_list = undo_list; | |
f736ffbf KH |
3428 | |
3429 | return Qnil; | |
3430 | } | |
3431 | ||
55587f8a | 3432 | |
1b978129 | 3433 | /* Used to pass values from insert-file-contents to read_non_regular. */ |
55587f8a | 3434 | |
1b978129 GM |
3435 | static int non_regular_fd; |
3436 | static int non_regular_inserted; | |
3437 | static int non_regular_nbytes; | |
55587f8a | 3438 | |
55587f8a | 3439 | |
1b978129 GM |
3440 | /* Read from a non-regular file. |
3441 | Read non_regular_trytry bytes max from non_regular_fd. | |
3442 | Non_regular_inserted specifies where to put the read bytes. | |
3443 | Value is the number of bytes read. */ | |
55587f8a GM |
3444 | |
3445 | static Lisp_Object | |
1b978129 | 3446 | read_non_regular () |
55587f8a | 3447 | { |
1b978129 GM |
3448 | int nbytes; |
3449 | ||
3450 | immediate_quit = 1; | |
3451 | QUIT; | |
3452 | nbytes = emacs_read (non_regular_fd, | |
3453 | BEG_ADDR + PT_BYTE - 1 + non_regular_inserted, | |
3454 | non_regular_nbytes); | |
3455 | Fsignal (Qquit, Qnil); | |
3456 | immediate_quit = 0; | |
3457 | return make_number (nbytes); | |
3458 | } | |
55587f8a | 3459 | |
d0e2444e | 3460 | |
1b978129 GM |
3461 | /* Condition-case handler used when reading from non-regular files |
3462 | in insert-file-contents. */ | |
3463 | ||
3464 | static Lisp_Object | |
3465 | read_non_regular_quit () | |
3466 | { | |
55587f8a GM |
3467 | return Qnil; |
3468 | } | |
3469 | ||
3470 | ||
570d7624 | 3471 | DEFUN ("insert-file-contents", Finsert_file_contents, Sinsert_file_contents, |
3d0387c0 | 3472 | 1, 5, 0, |
570d7624 | 3473 | "Insert contents of file FILENAME after point.\n\ |
ec7adf26 | 3474 | Returns list of absolute file name and number of bytes inserted.\n\ |
570d7624 JB |
3475 | If second argument VISIT is non-nil, the buffer's visited filename\n\ |
3476 | and last save file modtime are set, and it is marked unmodified.\n\ | |
3477 | If visiting and the file does not exist, visiting is completed\n\ | |
6fdaa9a0 | 3478 | before the error is signaled.\n\ |
7fded690 JB |
3479 | The optional third and fourth arguments BEG and END\n\ |
3480 | specify what portion of the file to insert.\n\ | |
ec7adf26 | 3481 | These arguments count bytes in the file, not characters in the buffer.\n\ |
3d0387c0 | 3482 | If VISIT is non-nil, BEG and END must be nil.\n\ |
94bec52a | 3483 | \n\ |
3d0387c0 RS |
3484 | If optional fifth argument REPLACE is non-nil,\n\ |
3485 | it means replace the current buffer contents (in the accessible portion)\n\ | |
3486 | with the file contents. This is better than simply deleting and inserting\n\ | |
3487 | the whole thing because (1) it preserves some marker positions\n\ | |
94bec52a RS |
3488 | and (2) it puts less data in the undo list.\n\ |
3489 | When REPLACE is non-nil, the value is the number of characters actually read,\n\ | |
6fdaa9a0 | 3490 | which is often less than the number of characters to be read.\n\ |
6cf71bf1 | 3491 | \n\ |
6fdaa9a0 | 3492 | This does code conversion according to the value of\n\ |
6cf71bf1 KH |
3493 | `coding-system-for-read' or `file-coding-system-alist',\n\ |
3494 | and sets the variable `last-coding-system-used' to the coding system\n\ | |
3495 | actually used.") | |
3d0387c0 RS |
3496 | (filename, visit, beg, end, replace) |
3497 | Lisp_Object filename, visit, beg, end, replace; | |
570d7624 JB |
3498 | { |
3499 | struct stat st; | |
3500 | register int fd; | |
ec7adf26 | 3501 | int inserted = 0; |
570d7624 | 3502 | register int how_much; |
6fdaa9a0 | 3503 | register int unprocessed; |
ed8e506f | 3504 | int count = BINDING_STACK_SIZE (); |
b1d1b865 RS |
3505 | struct gcpro gcpro1, gcpro2, gcpro3, gcpro4; |
3506 | Lisp_Object handler, val, insval, orig_filename; | |
d6a3cc15 | 3507 | Lisp_Object p; |
6bbd7a29 | 3508 | int total = 0; |
53c34c46 | 3509 | int not_regular = 0; |
feb9dc27 | 3510 | unsigned char read_buf[READ_BUF_SIZE]; |
6fdaa9a0 | 3511 | struct coding_system coding; |
3dbcf3f6 | 3512 | unsigned char buffer[1 << 14]; |
727a0b4a | 3513 | int replace_handled = 0; |
ec7adf26 | 3514 | int set_coding_system = 0; |
f736ffbf | 3515 | int coding_system_decided = 0; |
1b978129 GM |
3516 | int gap_size; |
3517 | int read_quit = 0; | |
32f4334d | 3518 | |
95385625 RS |
3519 | if (current_buffer->base_buffer && ! NILP (visit)) |
3520 | error ("Cannot do file visiting in an indirect buffer"); | |
3521 | ||
3522 | if (!NILP (current_buffer->read_only)) | |
3523 | Fbarf_if_buffer_read_only (); | |
3524 | ||
32f4334d | 3525 | val = Qnil; |
d6a3cc15 | 3526 | p = Qnil; |
b1d1b865 | 3527 | orig_filename = Qnil; |
32f4334d | 3528 | |
b1d1b865 | 3529 | GCPRO4 (filename, val, p, orig_filename); |
570d7624 JB |
3530 | |
3531 | CHECK_STRING (filename, 0); | |
3532 | filename = Fexpand_file_name (filename, Qnil); | |
3533 | ||
32f4334d RS |
3534 | /* If the file name has special constructs in it, |
3535 | call the corresponding file handler. */ | |
49307295 | 3536 | handler = Ffind_file_name_handler (filename, Qinsert_file_contents); |
32f4334d RS |
3537 | if (!NILP (handler)) |
3538 | { | |
3d0387c0 RS |
3539 | val = call6 (handler, Qinsert_file_contents, filename, |
3540 | visit, beg, end, replace); | |
03699b14 KR |
3541 | if (CONSP (val) && CONSP (XCDR (val))) |
3542 | inserted = XINT (XCAR (XCDR (val))); | |
32f4334d RS |
3543 | goto handled; |
3544 | } | |
3545 | ||
b1d1b865 RS |
3546 | orig_filename = filename; |
3547 | filename = ENCODE_FILE (filename); | |
3548 | ||
570d7624 JB |
3549 | fd = -1; |
3550 | ||
c1c4693e RS |
3551 | #ifdef WINDOWSNT |
3552 | { | |
3553 | Lisp_Object tem = Vw32_get_true_file_attributes; | |
3554 | ||
3555 | /* Tell stat to use expensive method to get accurate info. */ | |
3556 | Vw32_get_true_file_attributes = Qt; | |
3557 | total = stat (XSTRING (filename)->data, &st); | |
3558 | Vw32_get_true_file_attributes = tem; | |
3559 | } | |
3560 | if (total < 0) | |
3561 | #else | |
570d7624 | 3562 | #ifndef APOLLO |
99bc28f4 | 3563 | if (stat (XSTRING (filename)->data, &st) < 0) |
570d7624 | 3564 | #else |
68c45bf0 | 3565 | if ((fd = emacs_open (XSTRING (filename)->data, O_RDONLY, 0)) < 0 |
570d7624 JB |
3566 | || fstat (fd, &st) < 0) |
3567 | #endif /* not APOLLO */ | |
c1c4693e | 3568 | #endif /* WINDOWSNT */ |
570d7624 | 3569 | { |
68c45bf0 | 3570 | if (fd >= 0) emacs_close (fd); |
99bc28f4 | 3571 | badopen: |
265a9e55 | 3572 | if (NILP (visit)) |
b1d1b865 | 3573 | report_file_error ("Opening input file", Fcons (orig_filename, Qnil)); |
570d7624 JB |
3574 | st.st_mtime = -1; |
3575 | how_much = 0; | |
0de6b8f4 | 3576 | if (!NILP (Vcoding_system_for_read)) |
22d92d6b | 3577 | Fset (Qbuffer_file_coding_system, Vcoding_system_for_read); |
570d7624 JB |
3578 | goto notfound; |
3579 | } | |
3580 | ||
99bc28f4 | 3581 | #ifdef S_IFREG |
be53b411 JB |
3582 | /* This code will need to be changed in order to work on named |
3583 | pipes, and it's probably just not worth it. So we should at | |
3584 | least signal an error. */ | |
99bc28f4 | 3585 | if (!S_ISREG (st.st_mode)) |
330bfe57 | 3586 | { |
d4b8687b RS |
3587 | not_regular = 1; |
3588 | ||
3589 | if (! NILP (visit)) | |
3590 | goto notfound; | |
3591 | ||
3592 | if (! NILP (replace) || ! NILP (beg) || ! NILP (end)) | |
330bfe57 RS |
3593 | Fsignal (Qfile_error, |
3594 | Fcons (build_string ("not a regular file"), | |
b1d1b865 | 3595 | Fcons (orig_filename, Qnil))); |
330bfe57 | 3596 | } |
be53b411 JB |
3597 | #endif |
3598 | ||
99bc28f4 | 3599 | if (fd < 0) |
68c45bf0 | 3600 | if ((fd = emacs_open (XSTRING (filename)->data, O_RDONLY, 0)) < 0) |
99bc28f4 KH |
3601 | goto badopen; |
3602 | ||
3603 | /* Replacement should preserve point as it preserves markers. */ | |
3604 | if (!NILP (replace)) | |
3605 | record_unwind_protect (restore_point_unwind, Fpoint_marker ()); | |
3606 | ||
3607 | record_unwind_protect (close_file_unwind, make_number (fd)); | |
3608 | ||
570d7624 | 3609 | /* Supposedly happens on VMS. */ |
d4b8687b | 3610 | if (! not_regular && st.st_size < 0) |
570d7624 | 3611 | error ("File size is negative"); |
be53b411 | 3612 | |
9c856db9 GM |
3613 | /* Prevent redisplay optimizations. */ |
3614 | current_buffer->clip_changed = 1; | |
3615 | ||
9f57b6b4 KH |
3616 | if (!NILP (visit)) |
3617 | { | |
3618 | if (!NILP (beg) || !NILP (end)) | |
3619 | error ("Attempt to visit less than an entire file"); | |
3620 | if (BEG < Z && NILP (replace)) | |
3621 | error ("Cannot do file visiting in a non-empty buffer"); | |
3622 | } | |
7fded690 JB |
3623 | |
3624 | if (!NILP (beg)) | |
3625 | CHECK_NUMBER (beg, 0); | |
3626 | else | |
2acfd7ae | 3627 | XSETFASTINT (beg, 0); |
7fded690 JB |
3628 | |
3629 | if (!NILP (end)) | |
3630 | CHECK_NUMBER (end, 0); | |
3631 | else | |
3632 | { | |
d4b8687b RS |
3633 | if (! not_regular) |
3634 | { | |
3635 | XSETINT (end, st.st_size); | |
68c45bf0 PE |
3636 | |
3637 | /* Arithmetic overflow can occur if an Emacs integer cannot | |
3638 | represent the file size, or if the calculations below | |
3639 | overflow. The calculations below double the file size | |
3640 | twice, so check that it can be multiplied by 4 safely. */ | |
3641 | if (XINT (end) != st.st_size | |
3642 | || ((int) st.st_size * 4) / 4 != st.st_size) | |
d4b8687b | 3643 | error ("Maximum buffer size exceeded"); |
d21dd12d GM |
3644 | |
3645 | /* The file size returned from stat may be zero, but data | |
3646 | may be readable nonetheless, for example when this is a | |
3647 | file in the /proc filesystem. */ | |
3648 | if (st.st_size == 0) | |
3649 | XSETINT (end, READ_BUF_SIZE); | |
d4b8687b | 3650 | } |
7fded690 JB |
3651 | } |
3652 | ||
f736ffbf KH |
3653 | if (BEG < Z) |
3654 | { | |
3655 | /* Decide the coding system to use for reading the file now | |
3656 | because we can't use an optimized method for handling | |
3657 | `coding:' tag if the current buffer is not empty. */ | |
3658 | Lisp_Object val; | |
3659 | val = Qnil; | |
feb9dc27 | 3660 | |
f736ffbf KH |
3661 | if (!NILP (Vcoding_system_for_read)) |
3662 | val = Vcoding_system_for_read; | |
3663 | else if (! NILP (replace)) | |
3664 | /* In REPLACE mode, we can use the same coding system | |
3665 | that was used to visit the file. */ | |
3666 | val = current_buffer->buffer_file_coding_system; | |
3667 | else | |
3668 | { | |
3669 | /* Don't try looking inside a file for a coding system | |
3670 | specification if it is not seekable. */ | |
3671 | if (! not_regular && ! NILP (Vset_auto_coding_function)) | |
3672 | { | |
3673 | /* Find a coding system specified in the heading two | |
3674 | lines or in the tailing several lines of the file. | |
3675 | We assume that the 1K-byte and 3K-byte for heading | |
003a7eaa | 3676 | and tailing respectively are sufficient for this |
f736ffbf | 3677 | purpose. */ |
07590973 | 3678 | int nread; |
f736ffbf KH |
3679 | |
3680 | if (st.st_size <= (1024 * 4)) | |
68c45bf0 | 3681 | nread = emacs_read (fd, read_buf, 1024 * 4); |
f736ffbf KH |
3682 | else |
3683 | { | |
68c45bf0 | 3684 | nread = emacs_read (fd, read_buf, 1024); |
f736ffbf KH |
3685 | if (nread >= 0) |
3686 | { | |
3687 | if (lseek (fd, st.st_size - (1024 * 3), 0) < 0) | |
3688 | report_file_error ("Setting file position", | |
3689 | Fcons (orig_filename, Qnil)); | |
68c45bf0 | 3690 | nread += emacs_read (fd, read_buf + nread, 1024 * 3); |
f736ffbf KH |
3691 | } |
3692 | } | |
feb9dc27 | 3693 | |
f736ffbf KH |
3694 | if (nread < 0) |
3695 | error ("IO error reading %s: %s", | |
68c45bf0 | 3696 | XSTRING (orig_filename)->data, emacs_strerror (errno)); |
f736ffbf KH |
3697 | else if (nread > 0) |
3698 | { | |
f736ffbf | 3699 | struct buffer *prev = current_buffer; |
1d92afcd | 3700 | int count1; |
f736ffbf KH |
3701 | |
3702 | record_unwind_protect (Fset_buffer, Fcurrent_buffer ()); | |
1d92afcd GM |
3703 | |
3704 | /* The call to temp_output_buffer_setup binds | |
3705 | standard-output. */ | |
3706 | count1 = specpdl_ptr - specpdl; | |
f736ffbf | 3707 | temp_output_buffer_setup (" *code-converting-work*"); |
1d92afcd | 3708 | |
f736ffbf KH |
3709 | set_buffer_internal (XBUFFER (Vstandard_output)); |
3710 | current_buffer->enable_multibyte_characters = Qnil; | |
3711 | insert_1_both (read_buf, nread, nread, 0, 0, 0); | |
3712 | TEMP_SET_PT_BOTH (BEG, BEG_BYTE); | |
1255deb9 KH |
3713 | val = call2 (Vset_auto_coding_function, |
3714 | filename, make_number (nread)); | |
f736ffbf | 3715 | set_buffer_internal (prev); |
1d92afcd GM |
3716 | |
3717 | /* Remove the binding for standard-output. */ | |
3718 | unbind_to (count1, Qnil); | |
3719 | ||
f736ffbf KH |
3720 | /* Discard the unwind protect for recovering the |
3721 | current buffer. */ | |
3722 | specpdl_ptr--; | |
3723 | ||
3724 | /* Rewind the file for the actual read done later. */ | |
3725 | if (lseek (fd, 0, 0) < 0) | |
3726 | report_file_error ("Setting file position", | |
3727 | Fcons (orig_filename, Qnil)); | |
3728 | } | |
3729 | } | |
feb9dc27 | 3730 | |
f736ffbf KH |
3731 | if (NILP (val)) |
3732 | { | |
3733 | /* If we have not yet decided a coding system, check | |
3734 | file-coding-system-alist. */ | |
3735 | Lisp_Object args[6], coding_systems; | |
3736 | ||
3737 | args[0] = Qinsert_file_contents, args[1] = orig_filename; | |
3738 | args[2] = visit, args[3] = beg, args[4] = end, args[5] = replace; | |
3739 | coding_systems = Ffind_operation_coding_system (6, args); | |
3740 | if (CONSP (coding_systems)) | |
03699b14 | 3741 | val = XCAR (coding_systems); |
f736ffbf KH |
3742 | } |
3743 | } | |
c9e82392 | 3744 | |
f736ffbf | 3745 | setup_coding_system (Fcheck_coding_system (val), &coding); |
f8569325 DL |
3746 | /* Ensure we set Vlast_coding_system_used. */ |
3747 | set_coding_system = 1; | |
c8a6d68a | 3748 | |
237a6fd2 RS |
3749 | if (NILP (current_buffer->enable_multibyte_characters) |
3750 | && ! NILP (val)) | |
3751 | /* We must suppress all character code conversion except for | |
3752 | end-of-line conversion. */ | |
57515cfe | 3753 | setup_raw_text_coding_system (&coding); |
54369368 | 3754 | |
8c3b9441 KH |
3755 | coding.src_multibyte = 0; |
3756 | coding.dst_multibyte | |
3757 | = !NILP (current_buffer->enable_multibyte_characters); | |
f736ffbf KH |
3758 | coding_system_decided = 1; |
3759 | } | |
6cf71bf1 | 3760 | |
3d0387c0 RS |
3761 | /* If requested, replace the accessible part of the buffer |
3762 | with the file contents. Avoid replacing text at the | |
3763 | beginning or end of the buffer that matches the file contents; | |
3dbcf3f6 RS |
3764 | that preserves markers pointing to the unchanged parts. |
3765 | ||
3766 | Here we implement this feature in an optimized way | |
3767 | for the case where code conversion is NOT needed. | |
3768 | The following if-statement handles the case of conversion | |
727a0b4a RS |
3769 | in a less optimal way. |
3770 | ||
3771 | If the code conversion is "automatic" then we try using this | |
3772 | method and hope for the best. | |
3773 | But if we discover the need for conversion, we give up on this method | |
3774 | and let the following if-statement handle the replace job. */ | |
3dbcf3f6 | 3775 | if (!NILP (replace) |
f736ffbf | 3776 | && BEGV < ZV |
8c3b9441 | 3777 | && !(coding.common_flags & CODING_REQUIRE_DECODING_MASK)) |
3d0387c0 | 3778 | { |
ec7adf26 RS |
3779 | /* same_at_start and same_at_end count bytes, |
3780 | because file access counts bytes | |
3781 | and BEG and END count bytes. */ | |
3782 | int same_at_start = BEGV_BYTE; | |
3783 | int same_at_end = ZV_BYTE; | |
9c28748f | 3784 | int overlap; |
6fdaa9a0 KH |
3785 | /* There is still a possibility we will find the need to do code |
3786 | conversion. If that happens, we set this variable to 1 to | |
727a0b4a | 3787 | give up on handling REPLACE in the optimized way. */ |
6fdaa9a0 | 3788 | int giveup_match_end = 0; |
9c28748f | 3789 | |
4d2a0879 RS |
3790 | if (XINT (beg) != 0) |
3791 | { | |
3792 | if (lseek (fd, XINT (beg), 0) < 0) | |
3793 | report_file_error ("Setting file position", | |
b1d1b865 | 3794 | Fcons (orig_filename, Qnil)); |
4d2a0879 RS |
3795 | } |
3796 | ||
3d0387c0 RS |
3797 | immediate_quit = 1; |
3798 | QUIT; | |
3799 | /* Count how many chars at the start of the file | |
3800 | match the text at the beginning of the buffer. */ | |
3801 | while (1) | |
3802 | { | |
3803 | int nread, bufpos; | |
3804 | ||
68c45bf0 | 3805 | nread = emacs_read (fd, buffer, sizeof buffer); |
3d0387c0 RS |
3806 | if (nread < 0) |
3807 | error ("IO error reading %s: %s", | |
68c45bf0 | 3808 | XSTRING (orig_filename)->data, emacs_strerror (errno)); |
3d0387c0 RS |
3809 | else if (nread == 0) |
3810 | break; | |
6fdaa9a0 | 3811 | |
0ef69138 | 3812 | if (coding.type == coding_type_undecided) |
727a0b4a | 3813 | detect_coding (&coding, buffer, nread); |
8c3b9441 | 3814 | if (coding.common_flags & CODING_REQUIRE_DECODING_MASK) |
727a0b4a RS |
3815 | /* We found that the file should be decoded somehow. |
3816 | Let's give up here. */ | |
3817 | { | |
3818 | giveup_match_end = 1; | |
3819 | break; | |
3820 | } | |
3821 | ||
0ef69138 | 3822 | if (coding.eol_type == CODING_EOL_UNDECIDED) |
727a0b4a | 3823 | detect_eol (&coding, buffer, nread); |
1b335d29 | 3824 | if (coding.eol_type != CODING_EOL_UNDECIDED |
70ec4328 | 3825 | && coding.eol_type != CODING_EOL_LF) |
727a0b4a RS |
3826 | /* We found that the format of eol should be decoded. |
3827 | Let's give up here. */ | |
3828 | { | |
3829 | giveup_match_end = 1; | |
3830 | break; | |
3831 | } | |
3832 | ||
3d0387c0 | 3833 | bufpos = 0; |
ec7adf26 | 3834 | while (bufpos < nread && same_at_start < ZV_BYTE |
6fdaa9a0 | 3835 | && FETCH_BYTE (same_at_start) == buffer[bufpos]) |
3d0387c0 RS |
3836 | same_at_start++, bufpos++; |
3837 | /* If we found a discrepancy, stop the scan. | |
8e6208c5 | 3838 | Otherwise loop around and scan the next bufferful. */ |
3d0387c0 RS |
3839 | if (bufpos != nread) |
3840 | break; | |
3841 | } | |
3842 | immediate_quit = 0; | |
3843 | /* If the file matches the buffer completely, | |
3844 | there's no need to replace anything. */ | |
ec7adf26 | 3845 | if (same_at_start - BEGV_BYTE == XINT (end)) |
3d0387c0 | 3846 | { |
68c45bf0 | 3847 | emacs_close (fd); |
a1d2b64a | 3848 | specpdl_ptr--; |
1051b3b3 | 3849 | /* Truncate the buffer to the size of the file. */ |
7dae4502 | 3850 | del_range_1 (same_at_start, same_at_end, 0, 0); |
3d0387c0 RS |
3851 | goto handled; |
3852 | } | |
3853 | immediate_quit = 1; | |
3854 | QUIT; | |
3855 | /* Count how many chars at the end of the file | |
6fdaa9a0 KH |
3856 | match the text at the end of the buffer. But, if we have |
3857 | already found that decoding is necessary, don't waste time. */ | |
3858 | while (!giveup_match_end) | |
3d0387c0 RS |
3859 | { |
3860 | int total_read, nread, bufpos, curpos, trial; | |
3861 | ||
3862 | /* At what file position are we now scanning? */ | |
ec7adf26 | 3863 | curpos = XINT (end) - (ZV_BYTE - same_at_end); |
fc81fa9e KH |
3864 | /* If the entire file matches the buffer tail, stop the scan. */ |
3865 | if (curpos == 0) | |
3866 | break; | |
3d0387c0 RS |
3867 | /* How much can we scan in the next step? */ |
3868 | trial = min (curpos, sizeof buffer); | |
3869 | if (lseek (fd, curpos - trial, 0) < 0) | |
3870 | report_file_error ("Setting file position", | |
b1d1b865 | 3871 | Fcons (orig_filename, Qnil)); |
3d0387c0 | 3872 | |
b02439c8 | 3873 | total_read = nread = 0; |
3d0387c0 RS |
3874 | while (total_read < trial) |
3875 | { | |
68c45bf0 | 3876 | nread = emacs_read (fd, buffer + total_read, trial - total_read); |
2bd2273e | 3877 | if (nread < 0) |
3d0387c0 | 3878 | error ("IO error reading %s: %s", |
68c45bf0 | 3879 | XSTRING (orig_filename)->data, emacs_strerror (errno)); |
2bd2273e GM |
3880 | else if (nread == 0) |
3881 | break; | |
3d0387c0 RS |
3882 | total_read += nread; |
3883 | } | |
2bd2273e | 3884 | |
8e6208c5 | 3885 | /* Scan this bufferful from the end, comparing with |
3d0387c0 RS |
3886 | the Emacs buffer. */ |
3887 | bufpos = total_read; | |
2bd2273e | 3888 | |
3d0387c0 RS |
3889 | /* Compare with same_at_start to avoid counting some buffer text |
3890 | as matching both at the file's beginning and at the end. */ | |
3891 | while (bufpos > 0 && same_at_end > same_at_start | |
6fdaa9a0 | 3892 | && FETCH_BYTE (same_at_end - 1) == buffer[bufpos - 1]) |
3d0387c0 | 3893 | same_at_end--, bufpos--; |
727a0b4a | 3894 | |
3d0387c0 | 3895 | /* If we found a discrepancy, stop the scan. |
8e6208c5 | 3896 | Otherwise loop around and scan the preceding bufferful. */ |
3d0387c0 | 3897 | if (bufpos != 0) |
727a0b4a RS |
3898 | { |
3899 | /* If this discrepancy is because of code conversion, | |
3900 | we cannot use this method; giveup and try the other. */ | |
3901 | if (same_at_end > same_at_start | |
3902 | && FETCH_BYTE (same_at_end - 1) >= 0200 | |
71312b68 | 3903 | && ! NILP (current_buffer->enable_multibyte_characters) |
c8a6d68a | 3904 | && (CODING_MAY_REQUIRE_DECODING (&coding))) |
727a0b4a RS |
3905 | giveup_match_end = 1; |
3906 | break; | |
3907 | } | |
b02439c8 GM |
3908 | |
3909 | if (nread == 0) | |
3910 | break; | |
3d0387c0 RS |
3911 | } |
3912 | immediate_quit = 0; | |
9c28748f | 3913 | |
727a0b4a RS |
3914 | if (! giveup_match_end) |
3915 | { | |
ec7adf26 RS |
3916 | int temp; |
3917 | ||
727a0b4a | 3918 | /* We win! We can handle REPLACE the optimized way. */ |
9c28748f | 3919 | |
20f6783d RS |
3920 | /* Extend the start of non-matching text area to multibyte |
3921 | character boundary. */ | |
3922 | if (! NILP (current_buffer->enable_multibyte_characters)) | |
3923 | while (same_at_start > BEGV_BYTE | |
3924 | && ! CHAR_HEAD_P (FETCH_BYTE (same_at_start))) | |
3925 | same_at_start--; | |
3926 | ||
3927 | /* Extend the end of non-matching text area to multibyte | |
71312b68 RS |
3928 | character boundary. */ |
3929 | if (! NILP (current_buffer->enable_multibyte_characters)) | |
ec7adf26 RS |
3930 | while (same_at_end < ZV_BYTE |
3931 | && ! CHAR_HEAD_P (FETCH_BYTE (same_at_end))) | |
71312b68 RS |
3932 | same_at_end++; |
3933 | ||
727a0b4a | 3934 | /* Don't try to reuse the same piece of text twice. */ |
ec7adf26 RS |
3935 | overlap = (same_at_start - BEGV_BYTE |
3936 | - (same_at_end + st.st_size - ZV)); | |
727a0b4a RS |
3937 | if (overlap > 0) |
3938 | same_at_end += overlap; | |
9c28748f | 3939 | |
727a0b4a | 3940 | /* Arrange to read only the nonmatching middle part of the file. */ |
ec7adf26 RS |
3941 | XSETFASTINT (beg, XINT (beg) + (same_at_start - BEGV_BYTE)); |
3942 | XSETFASTINT (end, XINT (end) - (ZV_BYTE - same_at_end)); | |
3dbcf3f6 | 3943 | |
ec7adf26 | 3944 | del_range_byte (same_at_start, same_at_end, 0); |
727a0b4a | 3945 | /* Insert from the file at the proper position. */ |
ec7adf26 RS |
3946 | temp = BYTE_TO_CHAR (same_at_start); |
3947 | SET_PT_BOTH (temp, same_at_start); | |
727a0b4a RS |
3948 | |
3949 | /* If display currently starts at beginning of line, | |
3950 | keep it that way. */ | |
3951 | if (XBUFFER (XWINDOW (selected_window)->buffer) == current_buffer) | |
3952 | XWINDOW (selected_window)->start_at_line_beg = Fbolp (); | |
3953 | ||
3954 | replace_handled = 1; | |
3955 | } | |
3dbcf3f6 RS |
3956 | } |
3957 | ||
3958 | /* If requested, replace the accessible part of the buffer | |
3959 | with the file contents. Avoid replacing text at the | |
3960 | beginning or end of the buffer that matches the file contents; | |
3961 | that preserves markers pointing to the unchanged parts. | |
3962 | ||
3963 | Here we implement this feature for the case where code conversion | |
3964 | is needed, in a simple way that needs a lot of memory. | |
3965 | The preceding if-statement handles the case of no conversion | |
3966 | in a more optimized way. */ | |
f736ffbf | 3967 | if (!NILP (replace) && ! replace_handled && BEGV < ZV) |
3dbcf3f6 | 3968 | { |
ec7adf26 RS |
3969 | int same_at_start = BEGV_BYTE; |
3970 | int same_at_end = ZV_BYTE; | |
3dbcf3f6 RS |
3971 | int overlap; |
3972 | int bufpos; | |
3973 | /* Make sure that the gap is large enough. */ | |
3974 | int bufsize = 2 * st.st_size; | |
b00ca0d7 | 3975 | unsigned char *conversion_buffer = (unsigned char *) xmalloc (bufsize); |
ec7adf26 | 3976 | int temp; |
3dbcf3f6 RS |
3977 | |
3978 | /* First read the whole file, performing code conversion into | |
3979 | CONVERSION_BUFFER. */ | |
3980 | ||
727a0b4a RS |
3981 | if (lseek (fd, XINT (beg), 0) < 0) |
3982 | { | |
68cfd853 | 3983 | xfree (conversion_buffer); |
727a0b4a | 3984 | report_file_error ("Setting file position", |
b1d1b865 | 3985 | Fcons (orig_filename, Qnil)); |
727a0b4a RS |
3986 | } |
3987 | ||
3dbcf3f6 RS |
3988 | total = st.st_size; /* Total bytes in the file. */ |
3989 | how_much = 0; /* Bytes read from file so far. */ | |
3990 | inserted = 0; /* Bytes put into CONVERSION_BUFFER so far. */ | |
3991 | unprocessed = 0; /* Bytes not processed in previous loop. */ | |
3992 | ||
3993 | while (how_much < total) | |
3994 | { | |
3995 | /* try is reserved in some compilers (Microsoft C) */ | |
3996 | int trytry = min (total - how_much, READ_BUF_SIZE - unprocessed); | |
cadf50ff | 3997 | unsigned char *destination = read_buf + unprocessed; |
3dbcf3f6 RS |
3998 | int this; |
3999 | ||
4000 | /* Allow quitting out of the actual I/O. */ | |
4001 | immediate_quit = 1; | |
4002 | QUIT; | |
68c45bf0 | 4003 | this = emacs_read (fd, destination, trytry); |
3dbcf3f6 RS |
4004 | immediate_quit = 0; |
4005 | ||
4006 | if (this < 0 || this + unprocessed == 0) | |
4007 | { | |
4008 | how_much = this; | |
4009 | break; | |
4010 | } | |
4011 | ||
4012 | how_much += this; | |
4013 | ||
c8a6d68a | 4014 | if (CODING_MAY_REQUIRE_DECODING (&coding)) |
3dbcf3f6 | 4015 | { |
c8a6d68a | 4016 | int require, result; |
3dbcf3f6 RS |
4017 | |
4018 | this += unprocessed; | |
4019 | ||
4020 | /* If we are using more space than estimated, | |
4021 | make CONVERSION_BUFFER bigger. */ | |
4022 | require = decoding_buffer_size (&coding, this); | |
4023 | if (inserted + require + 2 * (total - how_much) > bufsize) | |
4024 | { | |
4025 | bufsize = inserted + require + 2 * (total - how_much); | |
92cf1086 | 4026 | conversion_buffer = (unsigned char *) xrealloc (conversion_buffer, bufsize); |
3dbcf3f6 RS |
4027 | } |
4028 | ||
4029 | /* Convert this batch with results in CONVERSION_BUFFER. */ | |
4030 | if (how_much >= total) /* This is the last block. */ | |
c8a6d68a | 4031 | coding.mode |= CODING_MODE_LAST_BLOCK; |
1ddb09f5 GM |
4032 | if (coding.composing != COMPOSITION_DISABLED) |
4033 | coding_allocate_composition_data (&coding, BEGV); | |
c8a6d68a KH |
4034 | result = decode_coding (&coding, read_buf, |
4035 | conversion_buffer + inserted, | |
4036 | this, bufsize - inserted); | |
3dbcf3f6 RS |
4037 | |
4038 | /* Save for next iteration whatever we didn't convert. */ | |
c8a6d68a KH |
4039 | unprocessed = this - coding.consumed; |
4040 | bcopy (read_buf + coding.consumed, read_buf, unprocessed); | |
8c3b9441 KH |
4041 | if (!NILP (current_buffer->enable_multibyte_characters)) |
4042 | this = coding.produced; | |
4043 | else | |
4044 | this = str_as_unibyte (conversion_buffer + inserted, | |
4045 | coding.produced); | |
3dbcf3f6 RS |
4046 | } |
4047 | ||
4048 | inserted += this; | |
4049 | } | |
4050 | ||
c8a6d68a | 4051 | /* At this point, INSERTED is how many characters (i.e. bytes) |
3dbcf3f6 RS |
4052 | are present in CONVERSION_BUFFER. |
4053 | HOW_MUCH should equal TOTAL, | |
4054 | or should be <= 0 if we couldn't read the file. */ | |
4055 | ||
4056 | if (how_much < 0) | |
4057 | { | |
a36837e4 | 4058 | xfree (conversion_buffer); |
3dbcf3f6 RS |
4059 | |
4060 | if (how_much == -1) | |
4061 | error ("IO error reading %s: %s", | |
68c45bf0 | 4062 | XSTRING (orig_filename)->data, emacs_strerror (errno)); |
3dbcf3f6 RS |
4063 | else if (how_much == -2) |
4064 | error ("maximum buffer size exceeded"); | |
4065 | } | |
4066 | ||
4067 | /* Compare the beginning of the converted file | |
4068 | with the buffer text. */ | |
4069 | ||
4070 | bufpos = 0; | |
4071 | while (bufpos < inserted && same_at_start < same_at_end | |
4072 | && FETCH_BYTE (same_at_start) == conversion_buffer[bufpos]) | |
4073 | same_at_start++, bufpos++; | |
4074 | ||
4075 | /* If the file matches the buffer completely, | |
4076 | there's no need to replace anything. */ | |
4077 | ||
4078 | if (bufpos == inserted) | |
4079 | { | |
a36837e4 | 4080 | xfree (conversion_buffer); |
68c45bf0 | 4081 | emacs_close (fd); |
3dbcf3f6 RS |
4082 | specpdl_ptr--; |
4083 | /* Truncate the buffer to the size of the file. */ | |
427f5aab KH |
4084 | del_range_byte (same_at_start, same_at_end, 0); |
4085 | inserted = 0; | |
3dbcf3f6 RS |
4086 | goto handled; |
4087 | } | |
4088 | ||
20f6783d RS |
4089 | /* Extend the start of non-matching text area to multibyte |
4090 | character boundary. */ | |
4091 | if (! NILP (current_buffer->enable_multibyte_characters)) | |
4092 | while (same_at_start > BEGV_BYTE | |
4093 | && ! CHAR_HEAD_P (FETCH_BYTE (same_at_start))) | |
4094 | same_at_start--; | |
4095 | ||
3dbcf3f6 RS |
4096 | /* Scan this bufferful from the end, comparing with |
4097 | the Emacs buffer. */ | |
4098 | bufpos = inserted; | |
4099 | ||
4100 | /* Compare with same_at_start to avoid counting some buffer text | |
4101 | as matching both at the file's beginning and at the end. */ | |
4102 | while (bufpos > 0 && same_at_end > same_at_start | |
4103 | && FETCH_BYTE (same_at_end - 1) == conversion_buffer[bufpos - 1]) | |
4104 | same_at_end--, bufpos--; | |
4105 | ||
20f6783d RS |
4106 | /* Extend the end of non-matching text area to multibyte |
4107 | character boundary. */ | |
4108 | if (! NILP (current_buffer->enable_multibyte_characters)) | |
4109 | while (same_at_end < ZV_BYTE | |
4110 | && ! CHAR_HEAD_P (FETCH_BYTE (same_at_end))) | |
4111 | same_at_end++; | |
4112 | ||
3dbcf3f6 | 4113 | /* Don't try to reuse the same piece of text twice. */ |
ec7adf26 | 4114 | overlap = same_at_start - BEGV_BYTE - (same_at_end + inserted - ZV_BYTE); |
3dbcf3f6 RS |
4115 | if (overlap > 0) |
4116 | same_at_end += overlap; | |
4117 | ||
727a0b4a RS |
4118 | /* If display currently starts at beginning of line, |
4119 | keep it that way. */ | |
4120 | if (XBUFFER (XWINDOW (selected_window)->buffer) == current_buffer) | |
4121 | XWINDOW (selected_window)->start_at_line_beg = Fbolp (); | |
4122 | ||
3dbcf3f6 RS |
4123 | /* Replace the chars that we need to replace, |
4124 | and update INSERTED to equal the number of bytes | |
4125 | we are taking from the file. */ | |
ec7adf26 | 4126 | inserted -= (Z_BYTE - same_at_end) + (same_at_start - BEG_BYTE); |
427f5aab | 4127 | |
643c73b9 | 4128 | if (same_at_end != same_at_start) |
427f5aab KH |
4129 | { |
4130 | del_range_byte (same_at_start, same_at_end, 0); | |
4131 | temp = GPT; | |
4132 | same_at_start = GPT_BYTE; | |
4133 | } | |
643c73b9 RS |
4134 | else |
4135 | { | |
643c73b9 | 4136 | temp = BYTE_TO_CHAR (same_at_start); |
643c73b9 | 4137 | } |
427f5aab KH |
4138 | /* Insert from the file at the proper position. */ |
4139 | SET_PT_BOTH (temp, same_at_start); | |
ec7adf26 RS |
4140 | insert_1 (conversion_buffer + same_at_start - BEG_BYTE, inserted, |
4141 | 0, 0, 0); | |
1ddb09f5 GM |
4142 | if (coding.cmp_data && coding.cmp_data->used) |
4143 | coding_restore_composition (&coding, Fcurrent_buffer ()); | |
4144 | coding_free_composition_data (&coding); | |
4145 | ||
427f5aab KH |
4146 | /* Set `inserted' to the number of inserted characters. */ |
4147 | inserted = PT - temp; | |
3dbcf3f6 | 4148 | |
93184560 | 4149 | xfree (conversion_buffer); |
68c45bf0 | 4150 | emacs_close (fd); |
3dbcf3f6 RS |
4151 | specpdl_ptr--; |
4152 | ||
3dbcf3f6 | 4153 | goto handled; |
3d0387c0 RS |
4154 | } |
4155 | ||
d4b8687b RS |
4156 | if (! not_regular) |
4157 | { | |
4158 | register Lisp_Object temp; | |
7fded690 | 4159 | |
d4b8687b | 4160 | total = XINT (end) - XINT (beg); |
570d7624 | 4161 | |
d4b8687b RS |
4162 | /* Make sure point-max won't overflow after this insertion. */ |
4163 | XSETINT (temp, total); | |
4164 | if (total != XINT (temp)) | |
4165 | error ("Maximum buffer size exceeded"); | |
4166 | } | |
4167 | else | |
4168 | /* For a special file, all we can do is guess. */ | |
4169 | total = READ_BUF_SIZE; | |
570d7624 | 4170 | |
57d8d468 | 4171 | if (NILP (visit) && total > 0) |
6c478ee2 | 4172 | prepare_to_modify_buffer (PT, PT, NULL); |
570d7624 | 4173 | |
7fe52289 | 4174 | move_gap (PT); |
7fded690 JB |
4175 | if (GAP_SIZE < total) |
4176 | make_gap (total - GAP_SIZE); | |
4177 | ||
a1d2b64a | 4178 | if (XINT (beg) != 0 || !NILP (replace)) |
7fded690 JB |
4179 | { |
4180 | if (lseek (fd, XINT (beg), 0) < 0) | |
b1d1b865 RS |
4181 | report_file_error ("Setting file position", |
4182 | Fcons (orig_filename, Qnil)); | |
7fded690 JB |
4183 | } |
4184 | ||
6fdaa9a0 | 4185 | /* In the following loop, HOW_MUCH contains the total bytes read so |
c8a6d68a KH |
4186 | far for a regular file, and not changed for a special file. But, |
4187 | before exiting the loop, it is set to a negative value if I/O | |
4188 | error occurs. */ | |
a1d2b64a | 4189 | how_much = 0; |
1b978129 | 4190 | |
6fdaa9a0 KH |
4191 | /* Total bytes inserted. */ |
4192 | inserted = 0; | |
1b978129 | 4193 | |
c8a6d68a KH |
4194 | /* Here, we don't do code conversion in the loop. It is done by |
4195 | code_convert_region after all data are read into the buffer. */ | |
1b978129 GM |
4196 | { |
4197 | int gap_size = GAP_SIZE; | |
4198 | ||
4199 | while (how_much < total) | |
4200 | { | |
5e570b75 | 4201 | /* try is reserved in some compilers (Microsoft C) */ |
1b978129 GM |
4202 | int trytry = min (total - how_much, READ_BUF_SIZE); |
4203 | int this; | |
570d7624 | 4204 | |
1b978129 GM |
4205 | if (not_regular) |
4206 | { | |
4207 | Lisp_Object val; | |
570d7624 | 4208 | |
1b978129 GM |
4209 | /* Maybe make more room. */ |
4210 | if (gap_size < trytry) | |
4211 | { | |
4212 | make_gap (total - gap_size); | |
4213 | gap_size = GAP_SIZE; | |
4214 | } | |
4215 | ||
4216 | /* Read from the file, capturing `quit'. When an | |
4217 | error occurs, end the loop, and arrange for a quit | |
4218 | to be signaled after decoding the text we read. */ | |
4219 | non_regular_fd = fd; | |
4220 | non_regular_inserted = inserted; | |
4221 | non_regular_nbytes = trytry; | |
4222 | val = internal_condition_case_1 (read_non_regular, Qnil, Qerror, | |
4223 | read_non_regular_quit); | |
4224 | if (NILP (val)) | |
4225 | { | |
4226 | read_quit = 1; | |
4227 | break; | |
4228 | } | |
4229 | ||
4230 | this = XINT (val); | |
4231 | } | |
4232 | else | |
4233 | { | |
4234 | /* Allow quitting out of the actual I/O. We don't make text | |
4235 | part of the buffer until all the reading is done, so a C-g | |
4236 | here doesn't do any harm. */ | |
4237 | immediate_quit = 1; | |
4238 | QUIT; | |
4239 | this = emacs_read (fd, BEG_ADDR + PT_BYTE - 1 + inserted, trytry); | |
4240 | immediate_quit = 0; | |
4241 | } | |
4242 | ||
4243 | if (this <= 0) | |
4244 | { | |
4245 | how_much = this; | |
4246 | break; | |
4247 | } | |
4248 | ||
4249 | gap_size -= this; | |
4250 | ||
4251 | /* For a regular file, where TOTAL is the real size, | |
4252 | count HOW_MUCH to compare with it. | |
4253 | For a special file, where TOTAL is just a buffer size, | |
4254 | so don't bother counting in HOW_MUCH. | |
4255 | (INSERTED is where we count the number of characters inserted.) */ | |
4256 | if (! not_regular) | |
4257 | how_much += this; | |
4258 | inserted += this; | |
4259 | } | |
4260 | } | |
4261 | ||
4262 | /* Make the text read part of the buffer. */ | |
4263 | GAP_SIZE -= inserted; | |
4264 | GPT += inserted; | |
4265 | GPT_BYTE += inserted; | |
4266 | ZV += inserted; | |
4267 | ZV_BYTE += inserted; | |
4268 | Z += inserted; | |
4269 | Z_BYTE += inserted; | |
6fdaa9a0 | 4270 | |
c8a6d68a KH |
4271 | if (GAP_SIZE > 0) |
4272 | /* Put an anchor to ensure multi-byte form ends at gap. */ | |
4273 | *GPT_ADDR = 0; | |
d4b8687b | 4274 | |
68c45bf0 | 4275 | emacs_close (fd); |
6fdaa9a0 | 4276 | |
c8a6d68a KH |
4277 | /* Discard the unwind protect for closing the file. */ |
4278 | specpdl_ptr--; | |
6fdaa9a0 | 4279 | |
c8a6d68a KH |
4280 | if (how_much < 0) |
4281 | error ("IO error reading %s: %s", | |
68c45bf0 | 4282 | XSTRING (orig_filename)->data, emacs_strerror (errno)); |
ec7adf26 | 4283 | |
f8569325 DL |
4284 | notfound: |
4285 | ||
2df42e09 | 4286 | if (! coding_system_decided) |
c8a6d68a | 4287 | { |
2df42e09 | 4288 | /* The coding system is not yet decided. Decide it by an |
dfe35e7b RS |
4289 | optimized method for handling `coding:' tag. |
4290 | ||
4291 | Note that we can get here only if the buffer was empty | |
4292 | before the insertion. */ | |
2df42e09 KH |
4293 | Lisp_Object val; |
4294 | val = Qnil; | |
f736ffbf | 4295 | |
2df42e09 KH |
4296 | if (!NILP (Vcoding_system_for_read)) |
4297 | val = Vcoding_system_for_read; | |
4298 | else | |
4299 | { | |
98a7d268 KH |
4300 | /* Since we are sure that the current buffer was empty |
4301 | before the insertion, we can toggle | |
4302 | enable-multibyte-characters directly here without taking | |
4303 | care of marker adjustment and byte combining problem. By | |
4304 | this way, we can run Lisp program safely before decoding | |
4305 | the inserted text. */ | |
4306 | Lisp_Object unwind_data; | |
2df42e09 KH |
4307 | int count = specpdl_ptr - specpdl; |
4308 | ||
98a7d268 KH |
4309 | unwind_data = Fcons (current_buffer->enable_multibyte_characters, |
4310 | Fcons (current_buffer->undo_list, | |
4311 | Fcurrent_buffer ())); | |
2df42e09 | 4312 | current_buffer->enable_multibyte_characters = Qnil; |
98a7d268 KH |
4313 | current_buffer->undo_list = Qt; |
4314 | record_unwind_protect (decide_coding_unwind, unwind_data); | |
4315 | ||
4316 | if (inserted > 0 && ! NILP (Vset_auto_coding_function)) | |
4317 | { | |
1255deb9 KH |
4318 | val = call2 (Vset_auto_coding_function, |
4319 | filename, make_number (inserted)); | |
2df42e09 | 4320 | } |
f736ffbf | 4321 | |
2df42e09 KH |
4322 | if (NILP (val)) |
4323 | { | |
4324 | /* If the coding system is not yet decided, check | |
4325 | file-coding-system-alist. */ | |
4326 | Lisp_Object args[6], coding_systems; | |
f736ffbf | 4327 | |
2df42e09 KH |
4328 | args[0] = Qinsert_file_contents, args[1] = orig_filename; |
4329 | args[2] = visit, args[3] = beg, args[4] = end, args[5] = Qnil; | |
4330 | coding_systems = Ffind_operation_coding_system (6, args); | |
4331 | if (CONSP (coding_systems)) | |
03699b14 | 4332 | val = XCAR (coding_systems); |
f736ffbf | 4333 | } |
98a7d268 KH |
4334 | |
4335 | unbind_to (count, Qnil); | |
4336 | inserted = Z_BYTE - BEG_BYTE; | |
2df42e09 | 4337 | } |
f736ffbf | 4338 | |
2df42e09 KH |
4339 | /* The following kludgy code is to avoid some compiler bug. |
4340 | We can't simply do | |
4341 | setup_coding_system (val, &coding); | |
4342 | on some system. */ | |
4343 | { | |
4344 | struct coding_system temp_coding; | |
4345 | setup_coding_system (val, &temp_coding); | |
4346 | bcopy (&temp_coding, &coding, sizeof coding); | |
4347 | } | |
f8569325 DL |
4348 | /* Ensure we set Vlast_coding_system_used. */ |
4349 | set_coding_system = 1; | |
f736ffbf | 4350 | |
237a6fd2 RS |
4351 | if (NILP (current_buffer->enable_multibyte_characters) |
4352 | && ! NILP (val)) | |
4353 | /* We must suppress all character code conversion except for | |
2df42e09 KH |
4354 | end-of-line conversion. */ |
4355 | setup_raw_text_coding_system (&coding); | |
6db43875 KH |
4356 | coding.src_multibyte = 0; |
4357 | coding.dst_multibyte | |
4358 | = !NILP (current_buffer->enable_multibyte_characters); | |
2df42e09 | 4359 | } |
f736ffbf | 4360 | |
8c3b9441 | 4361 | if (!NILP (visit) |
24766480 GM |
4362 | /* Can't do this if part of the buffer might be preserved. */ |
4363 | && NILP (replace) | |
8c3b9441 KH |
4364 | && (coding.type == coding_type_no_conversion |
4365 | || coding.type == coding_type_raw_text)) | |
4366 | { | |
24766480 GM |
4367 | /* Visiting a file with these coding system makes the buffer |
4368 | unibyte. */ | |
4369 | current_buffer->enable_multibyte_characters = Qnil; | |
e1249666 | 4370 | coding.dst_multibyte = 0; |
8c3b9441 KH |
4371 | } |
4372 | ||
c91beee2 | 4373 | if (inserted > 0 || coding.type == coding_type_ccl) |
2df42e09 | 4374 | { |
c8a6d68a | 4375 | if (CODING_MAY_REQUIRE_DECODING (&coding)) |
64e0ae2a KH |
4376 | { |
4377 | code_convert_region (PT, PT_BYTE, PT + inserted, PT_BYTE + inserted, | |
4378 | &coding, 0, 0); | |
8c3b9441 | 4379 | inserted = coding.produced_char; |
f8198e19 | 4380 | } |
e9cea947 AS |
4381 | else |
4382 | adjust_after_insert (PT, PT_BYTE, PT + inserted, PT_BYTE + inserted, | |
8c3b9441 | 4383 | inserted); |
2df42e09 | 4384 | } |
570d7624 | 4385 | |
04e6f79c | 4386 | #ifdef DOS_NT |
2df42e09 KH |
4387 | /* Use the conversion type to determine buffer-file-type |
4388 | (find-buffer-file-type is now used to help determine the | |
4389 | conversion). */ | |
4390 | if ((coding.eol_type == CODING_EOL_UNDECIDED | |
4391 | || coding.eol_type == CODING_EOL_LF) | |
4392 | && ! CODING_REQUIRE_DECODING (&coding)) | |
4393 | current_buffer->buffer_file_type = Qt; | |
4394 | else | |
4395 | current_buffer->buffer_file_type = Qnil; | |
04e6f79c | 4396 | #endif |
570d7624 | 4397 | |
32f4334d | 4398 | handled: |
570d7624 | 4399 | |
265a9e55 | 4400 | if (!NILP (visit)) |
570d7624 | 4401 | { |
cfadd376 RS |
4402 | if (!EQ (current_buffer->undo_list, Qt)) |
4403 | current_buffer->undo_list = Qnil; | |
570d7624 JB |
4404 | #ifdef APOLLO |
4405 | stat (XSTRING (filename)->data, &st); | |
4406 | #endif | |
62bcf009 | 4407 | |
a7e82472 RS |
4408 | if (NILP (handler)) |
4409 | { | |
4410 | current_buffer->modtime = st.st_mtime; | |
b1d1b865 | 4411 | current_buffer->filename = orig_filename; |
a7e82472 | 4412 | } |
62bcf009 | 4413 | |
95385625 | 4414 | SAVE_MODIFF = MODIFF; |
570d7624 | 4415 | current_buffer->auto_save_modified = MODIFF; |
2acfd7ae | 4416 | XSETFASTINT (current_buffer->save_length, Z - BEG); |
570d7624 | 4417 | #ifdef CLASH_DETECTION |
32f4334d RS |
4418 | if (NILP (handler)) |
4419 | { | |
f471f4c2 RS |
4420 | if (!NILP (current_buffer->file_truename)) |
4421 | unlock_file (current_buffer->file_truename); | |
32f4334d RS |
4422 | unlock_file (filename); |
4423 | } | |
570d7624 | 4424 | #endif /* CLASH_DETECTION */ |
330bfe57 RS |
4425 | if (not_regular) |
4426 | Fsignal (Qfile_error, | |
4427 | Fcons (build_string ("not a regular file"), | |
b1d1b865 | 4428 | Fcons (orig_filename, Qnil))); |
570d7624 JB |
4429 | } |
4430 | ||
0d420e88 | 4431 | /* Decode file format */ |
c8a6d68a | 4432 | if (inserted > 0) |
0d420e88 | 4433 | { |
ed8e506f GM |
4434 | int empty_undo_list_p = 0; |
4435 | ||
4436 | /* If we're anyway going to discard undo information, don't | |
4437 | record it in the first place. The buffer's undo list at this | |
4438 | point is either nil or t when visiting a file. */ | |
4439 | if (!NILP (visit)) | |
4440 | { | |
4441 | empty_undo_list_p = NILP (current_buffer->undo_list); | |
4442 | current_buffer->undo_list = Qt; | |
4443 | } | |
4444 | ||
199607e4 | 4445 | insval = call3 (Qformat_decode, |
c8a6d68a | 4446 | Qnil, make_number (inserted), visit); |
0d420e88 | 4447 | CHECK_NUMBER (insval, 0); |
c8a6d68a | 4448 | inserted = XFASTINT (insval); |
ed8e506f GM |
4449 | |
4450 | if (!NILP (visit)) | |
4451 | current_buffer->undo_list = empty_undo_list_p ? Qnil : Qt; | |
0d420e88 BG |
4452 | } |
4453 | ||
ce51c54c KH |
4454 | if (set_coding_system) |
4455 | Vlast_coding_system_used = coding.symbol; | |
4456 | ||
0342d8c5 RS |
4457 | /* Call after-change hooks for the inserted text, aside from the case |
4458 | of normal visiting (not with REPLACE), which is done in a new buffer | |
4459 | "before" the buffer is changed. */ | |
c8a6d68a | 4460 | if (inserted > 0 && total > 0 |
0342d8c5 | 4461 | && (NILP (visit) || !NILP (replace))) |
ce51c54c KH |
4462 | { |
4463 | signal_after_change (PT, 0, inserted); | |
4464 | update_compositions (PT, PT, CHECK_BORDER); | |
4465 | } | |
b56567b5 | 4466 | |
f8569325 DL |
4467 | p = Vafter_insert_file_functions; |
4468 | while (!NILP (p)) | |
d6a3cc15 | 4469 | { |
f8569325 DL |
4470 | insval = call1 (Fcar (p), make_number (inserted)); |
4471 | if (!NILP (insval)) | |
d6a3cc15 | 4472 | { |
f8569325 DL |
4473 | CHECK_NUMBER (insval, 0); |
4474 | inserted = XFASTINT (insval); | |
d6a3cc15 | 4475 | } |
f8569325 DL |
4476 | QUIT; |
4477 | p = Fcdr (p); | |
4478 | } | |
4479 | ||
4480 | if (!NILP (visit) | |
4481 | && current_buffer->modtime == -1) | |
4482 | { | |
4483 | /* If visiting nonexistent file, return nil. */ | |
4484 | report_file_error ("Opening input file", Fcons (orig_filename, Qnil)); | |
d6a3cc15 RS |
4485 | } |
4486 | ||
1b978129 GM |
4487 | if (read_quit) |
4488 | Fsignal (Qquit, Qnil); | |
4489 | ||
ec7adf26 | 4490 | /* ??? Retval needs to be dealt with in all cases consistently. */ |
a1d2b64a | 4491 | if (NILP (val)) |
b1d1b865 | 4492 | val = Fcons (orig_filename, |
a1d2b64a RS |
4493 | Fcons (make_number (inserted), |
4494 | Qnil)); | |
4495 | ||
4496 | RETURN_UNGCPRO (unbind_to (count, val)); | |
570d7624 | 4497 | } |
7fded690 | 4498 | \f |
ec7adf26 RS |
4499 | static Lisp_Object build_annotations P_ ((Lisp_Object, Lisp_Object, |
4500 | Lisp_Object)); | |
d6a3cc15 | 4501 | |
6fc6f94b | 4502 | /* If build_annotations switched buffers, switch back to BUF. |
6fdaa9a0 KH |
4503 | Kill the temporary buffer that was selected in the meantime. |
4504 | ||
4505 | Since this kill only the last temporary buffer, some buffers remain | |
4506 | not killed if build_annotations switched buffers more than once. | |
4507 | -- K.Handa */ | |
6fc6f94b | 4508 | |
199607e4 | 4509 | static Lisp_Object |
6fc6f94b RS |
4510 | build_annotations_unwind (buf) |
4511 | Lisp_Object buf; | |
4512 | { | |
4513 | Lisp_Object tembuf; | |
4514 | ||
4515 | if (XBUFFER (buf) == current_buffer) | |
4516 | return Qnil; | |
4517 | tembuf = Fcurrent_buffer (); | |
4518 | Fset_buffer (buf); | |
4519 | Fkill_buffer (tembuf); | |
4520 | return Qnil; | |
4521 | } | |
4522 | ||
de1d0127 RS |
4523 | DEFUN ("write-region", Fwrite_region, Swrite_region, 3, 7, |
4524 | "r\nFWrite region to file: \ni\ni\ni\np", | |
570d7624 JB |
4525 | "Write current region into specified file.\n\ |
4526 | When called from a program, takes three arguments:\n\ | |
4527 | START, END and FILENAME. START and END are buffer positions.\n\ | |
4528 | Optional fourth argument APPEND if non-nil means\n\ | |
43fb7d9a DL |
4529 | append to existing file contents (if any). If it is an integer,\n\ |
4530 | seek to that offset in the file before writing.\n\ | |
570d7624 JB |
4531 | Optional fifth argument VISIT if t means\n\ |
4532 | set the last-save-file-modtime of buffer to this file's modtime\n\ | |
4533 | and mark buffer not modified.\n\ | |
3b7792ed RS |
4534 | If VISIT is a string, it is a second file name;\n\ |
4535 | the output goes to FILENAME, but the buffer is marked as visiting VISIT.\n\ | |
4536 | VISIT is also the file name to lock and unlock for clash detection.\n\ | |
1d386d28 RS |
4537 | If VISIT is neither t nor nil nor a string,\n\ |
4538 | that means do not print the \"Wrote file\" message.\n\ | |
7204a979 | 4539 | The optional sixth arg LOCKNAME, if non-nil, specifies the name to\n\ |
8b68aae7 | 4540 | use for locking and unlocking, overriding FILENAME and VISIT.\n\ |
f7b4065f RS |
4541 | The optional seventh arg MUSTBENEW, if non-nil, insists on a check\n\ |
4542 | for an existing file with the same name. If MUSTBENEW is `excl',\n\ | |
4543 | that means to get an error if the file already exists; never overwrite.\n\ | |
4544 | If MUSTBENEW is neither nil nor `excl', that means ask for\n\ | |
4545 | confirmation before overwriting, but do go ahead and overwrite the file\n\ | |
4546 | if the user confirms.\n\ | |
570d7624 | 4547 | Kludgy feature: if START is a string, then that string is written\n\ |
6cf71bf1 KH |
4548 | to the file, instead of any buffer contents, and END is ignored.\n\ |
4549 | \n\ | |
4550 | This does code conversion according to the value of\n\ | |
4551 | `coding-system-for-write', `buffer-file-coding-system', or\n\ | |
4552 | `file-coding-system-alist', and sets the variable\n\ | |
4553 | `last-coding-system-used' to the coding system actually used.") | |
4554 | ||
f7b4065f RS |
4555 | (start, end, filename, append, visit, lockname, mustbenew) |
4556 | Lisp_Object start, end, filename, append, visit, lockname, mustbenew; | |
570d7624 JB |
4557 | { |
4558 | register int desc; | |
4559 | int failure; | |
6bbd7a29 | 4560 | int save_errno = 0; |
570d7624 JB |
4561 | unsigned char *fn; |
4562 | struct stat st; | |
c975dd7a | 4563 | int tem; |
570d7624 | 4564 | int count = specpdl_ptr - specpdl; |
6fc6f94b | 4565 | int count1; |
570d7624 | 4566 | #ifdef VMS |
5e570b75 | 4567 | unsigned char *fname = 0; /* If non-0, original filename (must rename) */ |
570d7624 | 4568 | #endif /* VMS */ |
3eac9910 | 4569 | Lisp_Object handler; |
4ad827c5 | 4570 | Lisp_Object visit_file; |
d6a3cc15 | 4571 | Lisp_Object annotations; |
b1d1b865 | 4572 | Lisp_Object encoded_filename; |
d3a67486 SM |
4573 | int visiting = (EQ (visit, Qt) || STRINGP (visit)); |
4574 | int quietly = !NILP (visit); | |
7204a979 | 4575 | struct gcpro gcpro1, gcpro2, gcpro3, gcpro4, gcpro5; |
6fc6f94b | 4576 | struct buffer *given_buffer; |
5e570b75 | 4577 | #ifdef DOS_NT |
fa228724 | 4578 | int buffer_file_type = O_BINARY; |
5e570b75 | 4579 | #endif /* DOS_NT */ |
6fdaa9a0 | 4580 | struct coding_system coding; |
570d7624 | 4581 | |
d3a67486 | 4582 | if (current_buffer->base_buffer && visiting) |
95385625 RS |
4583 | error ("Cannot do file visiting in an indirect buffer"); |
4584 | ||
561cb8e1 | 4585 | if (!NILP (start) && !STRINGP (start)) |
570d7624 JB |
4586 | validate_region (&start, &end); |
4587 | ||
115af127 | 4588 | GCPRO4 (start, filename, visit, lockname); |
cdfb0f1d | 4589 | |
b1d1b865 | 4590 | /* Decide the coding-system to encode the data with. */ |
cdfb0f1d KH |
4591 | { |
4592 | Lisp_Object val; | |
4593 | ||
cbc64b2a | 4594 | if (auto_saving) |
cdfb0f1d | 4595 | val = Qnil; |
cdfb0f1d KH |
4596 | else if (!NILP (Vcoding_system_for_write)) |
4597 | val = Vcoding_system_for_write; | |
1255deb9 | 4598 | else |
450c1a67 KH |
4599 | { |
4600 | /* If the variable `buffer-file-coding-system' is set locally, | |
4601 | it means that the file was read with some kind of code | |
8c27da0a | 4602 | conversion or the variable is explicitly set by users. We |
450c1a67 KH |
4603 | had better write it out with the same coding system even if |
4604 | `enable-multibyte-characters' is nil. | |
4605 | ||
c8a6d68a | 4606 | If it is not set locally, we anyway have to convert EOL |
450c1a67 KH |
4607 | format if the default value of `buffer-file-coding-system' |
4608 | tells that it is not Unix-like (LF only) format. */ | |
ef38927f KH |
4609 | int using_default_coding = 0; |
4610 | int force_raw_text = 0; | |
4611 | ||
450c1a67 | 4612 | val = current_buffer->buffer_file_coding_system; |
1255deb9 KH |
4613 | if (NILP (val) |
4614 | || NILP (Flocal_variable_p (Qbuffer_file_coding_system, Qnil))) | |
450c1a67 | 4615 | { |
450c1a67 | 4616 | val = Qnil; |
ef38927f KH |
4617 | if (NILP (current_buffer->enable_multibyte_characters)) |
4618 | force_raw_text = 1; | |
450c1a67 | 4619 | } |
ef38927f | 4620 | |
1255deb9 KH |
4621 | if (NILP (val)) |
4622 | { | |
4623 | /* Check file-coding-system-alist. */ | |
4624 | Lisp_Object args[7], coding_systems; | |
4625 | ||
4626 | args[0] = Qwrite_region; args[1] = start; args[2] = end; | |
4627 | args[3] = filename; args[4] = append; args[5] = visit; | |
4628 | args[6] = lockname; | |
4629 | coding_systems = Ffind_operation_coding_system (7, args); | |
03699b14 KR |
4630 | if (CONSP (coding_systems) && !NILP (XCDR (coding_systems))) |
4631 | val = XCDR (coding_systems); | |
1255deb9 KH |
4632 | } |
4633 | ||
ef38927f KH |
4634 | if (NILP (val) |
4635 | && !NILP (current_buffer->buffer_file_coding_system)) | |
4636 | { | |
4637 | /* If we still have not decided a coding system, use the | |
4638 | default value of buffer-file-coding-system. */ | |
4639 | val = current_buffer->buffer_file_coding_system; | |
4640 | using_default_coding = 1; | |
4641 | } | |
1255deb9 | 4642 | |
ef38927f | 4643 | if (!force_raw_text |
1255deb9 KH |
4644 | && !NILP (Ffboundp (Vselect_safe_coding_system_function))) |
4645 | /* Confirm that VAL can surely encode the current region. */ | |
c8a6d68a | 4646 | val = call3 (Vselect_safe_coding_system_function, start, end, val); |
ef38927f KH |
4647 | |
4648 | setup_coding_system (Fcheck_coding_system (val), &coding); | |
4649 | if (coding.eol_type == CODING_EOL_UNDECIDED | |
4650 | && !using_default_coding) | |
4651 | { | |
4652 | if (! EQ (default_buffer_file_coding.symbol, | |
4653 | buffer_defaults.buffer_file_coding_system)) | |
4654 | setup_coding_system (buffer_defaults.buffer_file_coding_system, | |
4655 | &default_buffer_file_coding); | |
4656 | if (default_buffer_file_coding.eol_type != CODING_EOL_UNDECIDED) | |
4657 | { | |
4658 | Lisp_Object subsidiaries; | |
4659 | ||
4660 | coding.eol_type = default_buffer_file_coding.eol_type; | |
4661 | subsidiaries = Fget (coding.symbol, Qeol_type); | |
4662 | if (VECTORP (subsidiaries) | |
4663 | && XVECTOR (subsidiaries)->size == 3) | |
4664 | coding.symbol | |
4665 | = XVECTOR (subsidiaries)->contents[coding.eol_type]; | |
4666 | } | |
4667 | } | |
4668 | ||
4669 | if (force_raw_text) | |
4670 | setup_raw_text_coding_system (&coding); | |
4671 | goto done_setup_coding; | |
cdfb0f1d | 4672 | } |
ef38927f | 4673 | |
1255deb9 | 4674 | setup_coding_system (Fcheck_coding_system (val), &coding); |
450c1a67 KH |
4675 | |
4676 | done_setup_coding: | |
cdfb0f1d | 4677 | if (!STRINGP (start) && !NILP (current_buffer->selective_display)) |
c8a6d68a | 4678 | coding.mode |= CODING_MODE_SELECTIVE_DISPLAY; |
cdfb0f1d KH |
4679 | } |
4680 | ||
b56567b5 KH |
4681 | Vlast_coding_system_used = coding.symbol; |
4682 | ||
570d7624 | 4683 | filename = Fexpand_file_name (filename, Qnil); |
de1d0127 | 4684 | |
7c752c80 | 4685 | if (! NILP (mustbenew) && !EQ (mustbenew, Qexcl)) |
b8b29dc9 | 4686 | barf_or_query_if_file_exists (filename, "overwrite", 1, 0, 1); |
de1d0127 | 4687 | |
561cb8e1 | 4688 | if (STRINGP (visit)) |
e5176bae | 4689 | visit_file = Fexpand_file_name (visit, Qnil); |
4ad827c5 RS |
4690 | else |
4691 | visit_file = filename; | |
1a04498e | 4692 | UNGCPRO; |
4ad827c5 | 4693 | |
d6a3cc15 RS |
4694 | annotations = Qnil; |
4695 | ||
7204a979 RS |
4696 | if (NILP (lockname)) |
4697 | lockname = visit_file; | |
4698 | ||
4699 | GCPRO5 (start, filename, annotations, visit_file, lockname); | |
570d7624 | 4700 | |
32f4334d RS |
4701 | /* If the file name has special constructs in it, |
4702 | call the corresponding file handler. */ | |
49307295 | 4703 | handler = Ffind_file_name_handler (filename, Qwrite_region); |
b56ad927 | 4704 | /* If FILENAME has no handler, see if VISIT has one. */ |
93c30b5f | 4705 | if (NILP (handler) && STRINGP (visit)) |
199607e4 | 4706 | handler = Ffind_file_name_handler (visit, Qwrite_region); |
3eac9910 | 4707 | |
32f4334d RS |
4708 | if (!NILP (handler)) |
4709 | { | |
32f4334d | 4710 | Lisp_Object val; |
51cf6d37 RS |
4711 | val = call6 (handler, Qwrite_region, start, end, |
4712 | filename, append, visit); | |
32f4334d | 4713 | |
d6a3cc15 | 4714 | if (visiting) |
32f4334d | 4715 | { |
95385625 | 4716 | SAVE_MODIFF = MODIFF; |
2acfd7ae | 4717 | XSETFASTINT (current_buffer->save_length, Z - BEG); |
3b7792ed | 4718 | current_buffer->filename = visit_file; |
32f4334d | 4719 | } |
09121adc | 4720 | UNGCPRO; |
32f4334d RS |
4721 | return val; |
4722 | } | |
4723 | ||
561cb8e1 RS |
4724 | /* Special kludge to simplify auto-saving. */ |
4725 | if (NILP (start)) | |
4726 | { | |
2acfd7ae KH |
4727 | XSETFASTINT (start, BEG); |
4728 | XSETFASTINT (end, Z); | |
561cb8e1 RS |
4729 | } |
4730 | ||
6fc6f94b RS |
4731 | record_unwind_protect (build_annotations_unwind, Fcurrent_buffer ()); |
4732 | count1 = specpdl_ptr - specpdl; | |
4733 | ||
4734 | given_buffer = current_buffer; | |
6fdaa9a0 | 4735 | annotations = build_annotations (start, end, coding.pre_write_conversion); |
6fc6f94b RS |
4736 | if (current_buffer != given_buffer) |
4737 | { | |
3cf29f61 RS |
4738 | XSETFASTINT (start, BEGV); |
4739 | XSETFASTINT (end, ZV); | |
6fc6f94b | 4740 | } |
d6a3cc15 | 4741 | |
570d7624 JB |
4742 | #ifdef CLASH_DETECTION |
4743 | if (!auto_saving) | |
84f6296a | 4744 | { |
a9171faa | 4745 | #if 0 /* This causes trouble for GNUS. */ |
84f6296a RS |
4746 | /* If we've locked this file for some other buffer, |
4747 | query before proceeding. */ | |
4748 | if (!visiting && EQ (Ffile_locked_p (lockname), Qt)) | |
bffd00b0 | 4749 | call2 (intern ("ask-user-about-lock"), filename, Vuser_login_name); |
a9171faa | 4750 | #endif |
84f6296a RS |
4751 | |
4752 | lock_file (lockname); | |
4753 | } | |
570d7624 JB |
4754 | #endif /* CLASH_DETECTION */ |
4755 | ||
b1d1b865 RS |
4756 | encoded_filename = ENCODE_FILE (filename); |
4757 | ||
4758 | fn = XSTRING (encoded_filename)->data; | |
570d7624 | 4759 | desc = -1; |
265a9e55 | 4760 | if (!NILP (append)) |
5e570b75 | 4761 | #ifdef DOS_NT |
68c45bf0 | 4762 | desc = emacs_open (fn, O_WRONLY | buffer_file_type, 0); |
5e570b75 | 4763 | #else /* not DOS_NT */ |
68c45bf0 | 4764 | desc = emacs_open (fn, O_WRONLY, 0); |
5e570b75 | 4765 | #endif /* not DOS_NT */ |
570d7624 | 4766 | |
b1d1b865 | 4767 | if (desc < 0 && (NILP (append) || errno == ENOENT)) |
570d7624 | 4768 | #ifdef VMS |
5e570b75 | 4769 | if (auto_saving) /* Overwrite any previous version of autosave file */ |
570d7624 | 4770 | { |
5e570b75 | 4771 | vms_truncate (fn); /* if fn exists, truncate to zero length */ |
68c45bf0 | 4772 | desc = emacs_open (fn, O_RDWR, 0); |
570d7624 | 4773 | if (desc < 0) |
561cb8e1 | 4774 | desc = creat_copy_attrs (STRINGP (current_buffer->filename) |
b72dea2a JB |
4775 | ? XSTRING (current_buffer->filename)->data : 0, |
4776 | fn); | |
570d7624 | 4777 | } |
5e570b75 | 4778 | else /* Write to temporary name and rename if no errors */ |
570d7624 JB |
4779 | { |
4780 | Lisp_Object temp_name; | |
4781 | temp_name = Ffile_name_directory (filename); | |
4782 | ||
265a9e55 | 4783 | if (!NILP (temp_name)) |
570d7624 JB |
4784 | { |
4785 | temp_name = Fmake_temp_name (concat2 (temp_name, | |
4786 | build_string ("$$SAVE$$"))); | |
4787 | fname = XSTRING (filename)->data; | |
4788 | fn = XSTRING (temp_name)->data; | |
4789 | desc = creat_copy_attrs (fname, fn); | |
4790 | if (desc < 0) | |
4791 | { | |
4792 | /* If we can't open the temporary file, try creating a new | |
4793 | version of the original file. VMS "creat" creates a | |
4794 | new version rather than truncating an existing file. */ | |
4795 | fn = fname; | |
4796 | fname = 0; | |
4797 | desc = creat (fn, 0666); | |
4798 | #if 0 /* This can clobber an existing file and fail to replace it, | |
4799 | if the user runs out of space. */ | |
4800 | if (desc < 0) | |
4801 | { | |
4802 | /* We can't make a new version; | |
4803 | try to truncate and rewrite existing version if any. */ | |
4804 | vms_truncate (fn); | |
68c45bf0 | 4805 | desc = emacs_open (fn, O_RDWR, 0); |
570d7624 JB |
4806 | } |
4807 | #endif | |
4808 | } | |
4809 | } | |
4810 | else | |
4811 | desc = creat (fn, 0666); | |
4812 | } | |
4813 | #else /* not VMS */ | |
5e570b75 | 4814 | #ifdef DOS_NT |
68c45bf0 | 4815 | desc = emacs_open (fn, |
95522746 GM |
4816 | O_WRONLY | O_CREAT | buffer_file_type |
4817 | | (EQ (mustbenew, Qexcl) ? O_EXCL : O_TRUNC), | |
68c45bf0 | 4818 | S_IREAD | S_IWRITE); |
5e570b75 | 4819 | #else /* not DOS_NT */ |
68c45bf0 | 4820 | desc = emacs_open (fn, O_WRONLY | O_TRUNC | O_CREAT |
7c752c80 | 4821 | | (EQ (mustbenew, Qexcl) ? O_EXCL : 0), |
68c45bf0 | 4822 | auto_saving ? auto_save_mode_bits : 0666); |
5e570b75 | 4823 | #endif /* not DOS_NT */ |
570d7624 JB |
4824 | #endif /* not VMS */ |
4825 | ||
4826 | if (desc < 0) | |
4827 | { | |
4828 | #ifdef CLASH_DETECTION | |
4829 | save_errno = errno; | |
7204a979 | 4830 | if (!auto_saving) unlock_file (lockname); |
570d7624 JB |
4831 | errno = save_errno; |
4832 | #endif /* CLASH_DETECTION */ | |
43fb7d9a | 4833 | UNGCPRO; |
570d7624 JB |
4834 | report_file_error ("Opening output file", Fcons (filename, Qnil)); |
4835 | } | |
4836 | ||
4837 | record_unwind_protect (close_file_unwind, make_number (desc)); | |
4838 | ||
c1c4693e | 4839 | if (!NILP (append) && !NILP (Ffile_regular_p (filename))) |
43fb7d9a DL |
4840 | { |
4841 | long ret; | |
4842 | ||
4843 | if (NUMBERP (append)) | |
4844 | ret = lseek (desc, XINT (append), 1); | |
4845 | else | |
4846 | ret = lseek (desc, 0, 2); | |
4847 | if (ret < 0) | |
4848 | { | |
570d7624 | 4849 | #ifdef CLASH_DETECTION |
43fb7d9a | 4850 | if (!auto_saving) unlock_file (lockname); |
570d7624 | 4851 | #endif /* CLASH_DETECTION */ |
43fb7d9a DL |
4852 | UNGCPRO; |
4853 | report_file_error ("Lseek error", Fcons (filename, Qnil)); | |
4854 | } | |
4855 | } | |
4856 | ||
4857 | UNGCPRO; | |
570d7624 JB |
4858 | |
4859 | #ifdef VMS | |
4860 | /* | |
4861 | * Kludge Warning: The VMS C RTL likes to insert carriage returns | |
4862 | * if we do writes that don't end with a carriage return. Furthermore | |
4863 | * it cannot handle writes of more then 16K. The modified | |
4864 | * version of "sys_write" in SYSDEP.C (see comment there) copes with | |
4865 | * this EXCEPT for the last record (iff it doesn't end with a carriage | |
4866 | * return). This implies that if your buffer doesn't end with a carriage | |
4867 | * return, you get one free... tough. However it also means that if | |
4868 | * we make two calls to sys_write (a la the following code) you can | |
4869 | * get one at the gap as well. The easiest way to fix this (honest) | |
4870 | * is to move the gap to the next newline (or the end of the buffer). | |
4871 | * Thus this change. | |
4872 | * | |
4873 | * Yech! | |
4874 | */ | |
4875 | if (GPT > BEG && GPT_ADDR[-1] != '\n') | |
4876 | move_gap (find_next_newline (GPT, 1)); | |
cdfb0f1d KH |
4877 | #else |
4878 | /* Whether VMS or not, we must move the gap to the next of newline | |
4879 | when we must put designation sequences at beginning of line. */ | |
4880 | if (INTEGERP (start) | |
4881 | && coding.type == coding_type_iso2022 | |
4882 | && coding.flags & CODING_FLAG_ISO_DESIGNATE_AT_BOL | |
4883 | && GPT > BEG && GPT_ADDR[-1] != '\n') | |
ec7adf26 RS |
4884 | { |
4885 | int opoint = PT, opoint_byte = PT_BYTE; | |
4886 | scan_newline (PT, PT_BYTE, ZV, ZV_BYTE, 1, 0); | |
4887 | move_gap_both (PT, PT_BYTE); | |
4888 | SET_PT_BOTH (opoint, opoint_byte); | |
4889 | } | |
570d7624 JB |
4890 | #endif |
4891 | ||
4892 | failure = 0; | |
4893 | immediate_quit = 1; | |
4894 | ||
561cb8e1 | 4895 | if (STRINGP (start)) |
570d7624 | 4896 | { |
ce51c54c KH |
4897 | failure = 0 > a_write (desc, start, 0, XSTRING (start)->size, |
4898 | &annotations, &coding); | |
570d7624 JB |
4899 | save_errno = errno; |
4900 | } | |
4901 | else if (XINT (start) != XINT (end)) | |
4902 | { | |
ec7adf26 RS |
4903 | tem = CHAR_TO_BYTE (XINT (start)); |
4904 | ||
570d7624 JB |
4905 | if (XINT (start) < GPT) |
4906 | { | |
ce51c54c KH |
4907 | failure = 0 > a_write (desc, Qnil, XINT (start), |
4908 | min (GPT, XINT (end)) - XINT (start), | |
4909 | &annotations, &coding); | |
570d7624 JB |
4910 | save_errno = errno; |
4911 | } | |
4912 | ||
4913 | if (XINT (end) > GPT && !failure) | |
4914 | { | |
ce51c54c KH |
4915 | tem = max (XINT (start), GPT); |
4916 | failure = 0 > a_write (desc, Qnil, tem , XINT (end) - tem, | |
4917 | &annotations, &coding); | |
d6a3cc15 RS |
4918 | save_errno = errno; |
4919 | } | |
69f6e679 RS |
4920 | } |
4921 | else | |
4922 | { | |
4923 | /* If file was empty, still need to write the annotations */ | |
c8a6d68a | 4924 | coding.mode |= CODING_MODE_LAST_BLOCK; |
ce51c54c | 4925 | failure = 0 > a_write (desc, Qnil, XINT (end), 0, &annotations, &coding); |
6fdaa9a0 KH |
4926 | save_errno = errno; |
4927 | } | |
4928 | ||
c8a6d68a KH |
4929 | if (CODING_REQUIRE_FLUSHING (&coding) |
4930 | && !(coding.mode & CODING_MODE_LAST_BLOCK) | |
1354debd | 4931 | && ! failure) |
6fdaa9a0 KH |
4932 | { |
4933 | /* We have to flush out a data. */ | |
c8a6d68a | 4934 | coding.mode |= CODING_MODE_LAST_BLOCK; |
ce51c54c | 4935 | failure = 0 > e_write (desc, Qnil, 0, 0, &coding); |
69f6e679 | 4936 | save_errno = errno; |
570d7624 JB |
4937 | } |
4938 | ||
4939 | immediate_quit = 0; | |
4940 | ||
6e23c83e | 4941 | #ifdef HAVE_FSYNC |
570d7624 JB |
4942 | /* Note fsync appears to change the modtime on BSD4.2 (both vax and sun). |
4943 | Disk full in NFS may be reported here. */ | |
1daffa1c RS |
4944 | /* mib says that closing the file will try to write as fast as NFS can do |
4945 | it, and that means the fsync here is not crucial for autosave files. */ | |
4946 | if (!auto_saving && fsync (desc) < 0) | |
cb33c142 KH |
4947 | { |
4948 | /* If fsync fails with EINTR, don't treat that as serious. */ | |
4949 | if (errno != EINTR) | |
4950 | failure = 1, save_errno = errno; | |
4951 | } | |
570d7624 JB |
4952 | #endif |
4953 | ||
199607e4 | 4954 | /* Spurious "file has changed on disk" warnings have been |
570d7624 JB |
4955 | observed on Suns as well. |
4956 | It seems that `close' can change the modtime, under nfs. | |
4957 | ||
4958 | (This has supposedly been fixed in Sunos 4, | |
4959 | but who knows about all the other machines with NFS?) */ | |
4960 | #if 0 | |
4961 | ||
4962 | /* On VMS and APOLLO, must do the stat after the close | |
4963 | since closing changes the modtime. */ | |
4964 | #ifndef VMS | |
4965 | #ifndef APOLLO | |
4966 | /* Recall that #if defined does not work on VMS. */ | |
4967 | #define FOO | |
4968 | fstat (desc, &st); | |
4969 | #endif | |
4970 | #endif | |
4971 | #endif | |
4972 | ||
4973 | /* NFS can report a write failure now. */ | |
68c45bf0 | 4974 | if (emacs_close (desc) < 0) |
570d7624 JB |
4975 | failure = 1, save_errno = errno; |
4976 | ||
4977 | #ifdef VMS | |
4978 | /* If we wrote to a temporary name and had no errors, rename to real name. */ | |
4979 | if (fname) | |
4980 | { | |
4981 | if (!failure) | |
4982 | failure = (rename (fn, fname) != 0), save_errno = errno; | |
4983 | fn = fname; | |
4984 | } | |
4985 | #endif /* VMS */ | |
4986 | ||
4987 | #ifndef FOO | |
4988 | stat (fn, &st); | |
4989 | #endif | |
6fc6f94b RS |
4990 | /* Discard the unwind protect for close_file_unwind. */ |
4991 | specpdl_ptr = specpdl + count1; | |
4992 | /* Restore the original current buffer. */ | |
98295b48 | 4993 | visit_file = unbind_to (count, visit_file); |
570d7624 JB |
4994 | |
4995 | #ifdef CLASH_DETECTION | |
4996 | if (!auto_saving) | |
7204a979 | 4997 | unlock_file (lockname); |
570d7624 JB |
4998 | #endif /* CLASH_DETECTION */ |
4999 | ||
5000 | /* Do this before reporting IO error | |
5001 | to avoid a "file has changed on disk" warning on | |
5002 | next attempt to save. */ | |
d6a3cc15 | 5003 | if (visiting) |
570d7624 JB |
5004 | current_buffer->modtime = st.st_mtime; |
5005 | ||
5006 | if (failure) | |
b1d1b865 | 5007 | error ("IO error writing %s: %s", XSTRING (filename)->data, |
68c45bf0 | 5008 | emacs_strerror (save_errno)); |
570d7624 | 5009 | |
d6a3cc15 | 5010 | if (visiting) |
570d7624 | 5011 | { |
95385625 | 5012 | SAVE_MODIFF = MODIFF; |
2acfd7ae | 5013 | XSETFASTINT (current_buffer->save_length, Z - BEG); |
3b7792ed | 5014 | current_buffer->filename = visit_file; |
f4226e89 | 5015 | update_mode_lines++; |
570d7624 | 5016 | } |
d6a3cc15 | 5017 | else if (quietly) |
570d7624 JB |
5018 | return Qnil; |
5019 | ||
5020 | if (!auto_saving) | |
60d67b83 | 5021 | message_with_string ("Wrote %s", visit_file, 1); |
570d7624 JB |
5022 | |
5023 | return Qnil; | |
5024 | } | |
ec7adf26 | 5025 | \f |
d6a3cc15 RS |
5026 | Lisp_Object merge (); |
5027 | ||
5028 | DEFUN ("car-less-than-car", Fcar_less_than_car, Scar_less_than_car, 2, 2, 0, | |
2ba0ccff | 5029 | "Return t if (car A) is numerically less than (car B).") |
d6a3cc15 RS |
5030 | (a, b) |
5031 | Lisp_Object a, b; | |
5032 | { | |
5033 | return Flss (Fcar (a), Fcar (b)); | |
5034 | } | |
5035 | ||
5036 | /* Build the complete list of annotations appropriate for writing out | |
5037 | the text between START and END, by calling all the functions in | |
6fc6f94b RS |
5038 | write-region-annotate-functions and merging the lists they return. |
5039 | If one of these functions switches to a different buffer, we assume | |
5040 | that buffer contains altered text. Therefore, the caller must | |
5041 | make sure to restore the current buffer in all cases, | |
5042 | as save-excursion would do. */ | |
d6a3cc15 RS |
5043 | |
5044 | static Lisp_Object | |
6fdaa9a0 KH |
5045 | build_annotations (start, end, pre_write_conversion) |
5046 | Lisp_Object start, end, pre_write_conversion; | |
d6a3cc15 RS |
5047 | { |
5048 | Lisp_Object annotations; | |
5049 | Lisp_Object p, res; | |
5050 | struct gcpro gcpro1, gcpro2; | |
0a20b684 | 5051 | Lisp_Object original_buffer; |
532ed661 | 5052 | int i; |
0a20b684 RS |
5053 | |
5054 | XSETBUFFER (original_buffer, current_buffer); | |
d6a3cc15 RS |
5055 | |
5056 | annotations = Qnil; | |
5057 | p = Vwrite_region_annotate_functions; | |
5058 | GCPRO2 (annotations, p); | |
5059 | while (!NILP (p)) | |
5060 | { | |
6fc6f94b RS |
5061 | struct buffer *given_buffer = current_buffer; |
5062 | Vwrite_region_annotations_so_far = annotations; | |
d6a3cc15 | 5063 | res = call2 (Fcar (p), start, end); |
6fc6f94b RS |
5064 | /* If the function makes a different buffer current, |
5065 | assume that means this buffer contains altered text to be output. | |
5066 | Reset START and END from the buffer bounds | |
5067 | and discard all previous annotations because they should have | |
5068 | been dealt with by this function. */ | |
5069 | if (current_buffer != given_buffer) | |
5070 | { | |
3cf29f61 RS |
5071 | XSETFASTINT (start, BEGV); |
5072 | XSETFASTINT (end, ZV); | |
6fc6f94b RS |
5073 | annotations = Qnil; |
5074 | } | |
d6a3cc15 RS |
5075 | Flength (res); /* Check basic validity of return value */ |
5076 | annotations = merge (annotations, res, Qcar_less_than_car); | |
5077 | p = Fcdr (p); | |
5078 | } | |
0d420e88 BG |
5079 | |
5080 | /* Now do the same for annotation functions implied by the file-format */ | |
5081 | if (auto_saving && (!EQ (Vauto_save_file_format, Qt))) | |
5082 | p = Vauto_save_file_format; | |
5083 | else | |
5084 | p = current_buffer->file_format; | |
532ed661 | 5085 | for (i = 0; !NILP (p); p = Fcdr (p), ++i) |
0d420e88 BG |
5086 | { |
5087 | struct buffer *given_buffer = current_buffer; | |
532ed661 | 5088 | |
0d420e88 | 5089 | Vwrite_region_annotations_so_far = annotations; |
532ed661 GM |
5090 | |
5091 | /* Value is either a list of annotations or nil if the function | |
5092 | has written annotations to a temporary buffer, which is now | |
5093 | current. */ | |
5094 | res = call5 (Qformat_annotate_function, Fcar (p), start, end, | |
5095 | original_buffer, make_number (i)); | |
0d420e88 BG |
5096 | if (current_buffer != given_buffer) |
5097 | { | |
3cf29f61 RS |
5098 | XSETFASTINT (start, BEGV); |
5099 | XSETFASTINT (end, ZV); | |
0d420e88 BG |
5100 | annotations = Qnil; |
5101 | } | |
532ed661 GM |
5102 | |
5103 | if (CONSP (res)) | |
5104 | annotations = merge (annotations, res, Qcar_less_than_car); | |
0d420e88 | 5105 | } |
6fdaa9a0 KH |
5106 | |
5107 | /* At last, do the same for the function PRE_WRITE_CONVERSION | |
5108 | implied by the current coding-system. */ | |
5109 | if (!NILP (pre_write_conversion)) | |
5110 | { | |
5111 | struct buffer *given_buffer = current_buffer; | |
5112 | Vwrite_region_annotations_so_far = annotations; | |
5113 | res = call2 (pre_write_conversion, start, end); | |
6fdaa9a0 | 5114 | Flength (res); |
cdfb0f1d KH |
5115 | annotations = (current_buffer != given_buffer |
5116 | ? res | |
5117 | : merge (annotations, res, Qcar_less_than_car)); | |
6fdaa9a0 KH |
5118 | } |
5119 | ||
d6a3cc15 RS |
5120 | UNGCPRO; |
5121 | return annotations; | |
5122 | } | |
ec7adf26 | 5123 | \f |
ce51c54c KH |
5124 | /* Write to descriptor DESC the NCHARS chars starting at POS of STRING. |
5125 | If STRING is nil, POS is the character position in the current buffer. | |
d6a3cc15 | 5126 | Intersperse with them the annotations from *ANNOT |
ce51c54c | 5127 | which fall within the range of POS to POS + NCHARS, |
d6a3cc15 RS |
5128 | each at its appropriate position. |
5129 | ||
ec7adf26 RS |
5130 | We modify *ANNOT by discarding elements as we use them up. |
5131 | ||
d6a3cc15 RS |
5132 | The return value is negative in case of system call failure. */ |
5133 | ||
ec7adf26 | 5134 | static int |
ce51c54c | 5135 | a_write (desc, string, pos, nchars, annot, coding) |
d6a3cc15 | 5136 | int desc; |
ce51c54c KH |
5137 | Lisp_Object string; |
5138 | register int nchars; | |
5139 | int pos; | |
d6a3cc15 | 5140 | Lisp_Object *annot; |
6fdaa9a0 | 5141 | struct coding_system *coding; |
d6a3cc15 RS |
5142 | { |
5143 | Lisp_Object tem; | |
5144 | int nextpos; | |
ce51c54c | 5145 | int lastpos = pos + nchars; |
d6a3cc15 | 5146 | |
eb15aa18 | 5147 | while (NILP (*annot) || CONSP (*annot)) |
d6a3cc15 RS |
5148 | { |
5149 | tem = Fcar_safe (Fcar (*annot)); | |
ce51c54c | 5150 | nextpos = pos - 1; |
ec7adf26 | 5151 | if (INTEGERP (tem)) |
ce51c54c | 5152 | nextpos = XFASTINT (tem); |
ec7adf26 RS |
5153 | |
5154 | /* If there are no more annotations in this range, | |
5155 | output the rest of the range all at once. */ | |
ce51c54c KH |
5156 | if (! (nextpos >= pos && nextpos <= lastpos)) |
5157 | return e_write (desc, string, pos, lastpos, coding); | |
ec7adf26 RS |
5158 | |
5159 | /* Output buffer text up to the next annotation's position. */ | |
ce51c54c | 5160 | if (nextpos > pos) |
d6a3cc15 | 5161 | { |
055a28c9 | 5162 | if (0 > e_write (desc, string, pos, nextpos, coding)) |
d6a3cc15 | 5163 | return -1; |
ce51c54c | 5164 | pos = nextpos; |
d6a3cc15 | 5165 | } |
ec7adf26 | 5166 | /* Output the annotation. */ |
d6a3cc15 RS |
5167 | tem = Fcdr (Fcar (*annot)); |
5168 | if (STRINGP (tem)) | |
5169 | { | |
055a28c9 | 5170 | if (0 > e_write (desc, tem, 0, XSTRING (tem)->size, coding)) |
d6a3cc15 RS |
5171 | return -1; |
5172 | } | |
5173 | *annot = Fcdr (*annot); | |
5174 | } | |
dfcf069d | 5175 | return 0; |
d6a3cc15 RS |
5176 | } |
5177 | ||
6fdaa9a0 KH |
5178 | #ifndef WRITE_BUF_SIZE |
5179 | #define WRITE_BUF_SIZE (16 * 1024) | |
5180 | #endif | |
5181 | ||
ce51c54c KH |
5182 | /* Write text in the range START and END into descriptor DESC, |
5183 | encoding them with coding system CODING. If STRING is nil, START | |
5184 | and END are character positions of the current buffer, else they | |
5185 | are indexes to the string STRING. */ | |
ec7adf26 RS |
5186 | |
5187 | static int | |
ce51c54c | 5188 | e_write (desc, string, start, end, coding) |
570d7624 | 5189 | int desc; |
ce51c54c KH |
5190 | Lisp_Object string; |
5191 | int start, end; | |
6fdaa9a0 | 5192 | struct coding_system *coding; |
570d7624 | 5193 | { |
ce51c54c KH |
5194 | register char *addr; |
5195 | register int nbytes; | |
6fdaa9a0 | 5196 | char buf[WRITE_BUF_SIZE]; |
ce51c54c KH |
5197 | int return_val = 0; |
5198 | ||
5199 | if (start >= end) | |
5200 | coding->composing = COMPOSITION_DISABLED; | |
5201 | if (coding->composing != COMPOSITION_DISABLED) | |
5202 | coding_save_composition (coding, start, end, string); | |
5203 | ||
5204 | if (STRINGP (string)) | |
5205 | { | |
5206 | addr = XSTRING (string)->data; | |
5207 | nbytes = STRING_BYTES (XSTRING (string)); | |
8c3b9441 | 5208 | coding->src_multibyte = STRING_MULTIBYTE (string); |
ce51c54c KH |
5209 | } |
5210 | else if (start < end) | |
5211 | { | |
5212 | /* It is assured that the gap is not in the range START and END-1. */ | |
5213 | addr = CHAR_POS_ADDR (start); | |
5214 | nbytes = CHAR_TO_BYTE (end) - CHAR_TO_BYTE (start); | |
8c3b9441 KH |
5215 | coding->src_multibyte |
5216 | = !NILP (current_buffer->enable_multibyte_characters); | |
ce51c54c KH |
5217 | } |
5218 | else | |
5219 | { | |
5220 | addr = ""; | |
5221 | nbytes = 0; | |
8c3b9441 | 5222 | coding->src_multibyte = 1; |
ce51c54c | 5223 | } |
570d7624 | 5224 | |
6fdaa9a0 KH |
5225 | /* We used to have a code for handling selective display here. But, |
5226 | now it is handled within encode_coding. */ | |
5227 | while (1) | |
570d7624 | 5228 | { |
b4132433 KH |
5229 | int result; |
5230 | ||
5231 | result = encode_coding (coding, addr, buf, nbytes, WRITE_BUF_SIZE); | |
c8a6d68a | 5232 | if (coding->produced > 0) |
6fdaa9a0 | 5233 | { |
68c45bf0 | 5234 | coding->produced -= emacs_write (desc, buf, coding->produced); |
ce51c54c KH |
5235 | if (coding->produced) |
5236 | { | |
5237 | return_val = -1; | |
5238 | break; | |
5239 | } | |
570d7624 | 5240 | } |
ca91fb26 KH |
5241 | nbytes -= coding->consumed; |
5242 | addr += coding->consumed; | |
5243 | if (result == CODING_FINISH_INSUFFICIENT_SRC | |
5244 | && nbytes > 0) | |
b4132433 KH |
5245 | { |
5246 | /* The source text ends by an incomplete multibyte form. | |
5247 | There's no way other than write it out as is. */ | |
68c45bf0 | 5248 | nbytes -= emacs_write (desc, addr, nbytes); |
ce51c54c KH |
5249 | if (nbytes) |
5250 | { | |
5251 | return_val = -1; | |
5252 | break; | |
5253 | } | |
b4132433 | 5254 | } |
ec7adf26 | 5255 | if (nbytes <= 0) |
6fdaa9a0 | 5256 | break; |
ce51c54c KH |
5257 | start += coding->consumed_char; |
5258 | if (coding->cmp_data) | |
5259 | coding_adjust_composition_offset (coding, start); | |
570d7624 | 5260 | } |
0c41a39c KH |
5261 | |
5262 | if (coding->cmp_data) | |
5263 | coding_free_composition_data (coding); | |
5264 | ||
055a28c9 | 5265 | return return_val; |
570d7624 | 5266 | } |
ec7adf26 | 5267 | \f |
570d7624 JB |
5268 | DEFUN ("verify-visited-file-modtime", Fverify_visited_file_modtime, |
5269 | Sverify_visited_file_modtime, 1, 1, 0, | |
5270 | "Return t if last mod time of BUF's visited file matches what BUF records.\n\ | |
5271 | This means that the file has not been changed since it was visited or saved.") | |
5272 | (buf) | |
5273 | Lisp_Object buf; | |
5274 | { | |
5275 | struct buffer *b; | |
5276 | struct stat st; | |
32f4334d | 5277 | Lisp_Object handler; |
b1d1b865 | 5278 | Lisp_Object filename; |
570d7624 JB |
5279 | |
5280 | CHECK_BUFFER (buf, 0); | |
5281 | b = XBUFFER (buf); | |
5282 | ||
93c30b5f | 5283 | if (!STRINGP (b->filename)) return Qt; |
570d7624 JB |
5284 | if (b->modtime == 0) return Qt; |
5285 | ||
32f4334d RS |
5286 | /* If the file name has special constructs in it, |
5287 | call the corresponding file handler. */ | |
49307295 KH |
5288 | handler = Ffind_file_name_handler (b->filename, |
5289 | Qverify_visited_file_modtime); | |
32f4334d | 5290 | if (!NILP (handler)) |
09121adc | 5291 | return call2 (handler, Qverify_visited_file_modtime, buf); |
32f4334d | 5292 | |
b1d1b865 RS |
5293 | filename = ENCODE_FILE (b->filename); |
5294 | ||
5295 | if (stat (XSTRING (filename)->data, &st) < 0) | |
570d7624 JB |
5296 | { |
5297 | /* If the file doesn't exist now and didn't exist before, | |
5298 | we say that it isn't modified, provided the error is a tame one. */ | |
5299 | if (errno == ENOENT || errno == EACCES || errno == ENOTDIR) | |
5300 | st.st_mtime = -1; | |
5301 | else | |
5302 | st.st_mtime = 0; | |
5303 | } | |
5304 | if (st.st_mtime == b->modtime | |
5305 | /* If both are positive, accept them if they are off by one second. */ | |
5306 | || (st.st_mtime > 0 && b->modtime > 0 | |
5307 | && (st.st_mtime == b->modtime + 1 | |
5308 | || st.st_mtime == b->modtime - 1))) | |
5309 | return Qt; | |
5310 | return Qnil; | |
5311 | } | |
5312 | ||
5313 | DEFUN ("clear-visited-file-modtime", Fclear_visited_file_modtime, | |
5314 | Sclear_visited_file_modtime, 0, 0, 0, | |
5315 | "Clear out records of last mod time of visited file.\n\ | |
5316 | Next attempt to save will certainly not complain of a discrepancy.") | |
5317 | () | |
5318 | { | |
5319 | current_buffer->modtime = 0; | |
5320 | return Qnil; | |
5321 | } | |
5322 | ||
f5d5eccf RS |
5323 | DEFUN ("visited-file-modtime", Fvisited_file_modtime, |
5324 | Svisited_file_modtime, 0, 0, 0, | |
5325 | "Return the current buffer's recorded visited file modification time.\n\ | |
5326 | The value is a list of the form (HIGH . LOW), like the time values\n\ | |
5327 | that `file-attributes' returns.") | |
5328 | () | |
5329 | { | |
b50536bb | 5330 | return long_to_cons ((unsigned long) current_buffer->modtime); |
f5d5eccf RS |
5331 | } |
5332 | ||
570d7624 | 5333 | DEFUN ("set-visited-file-modtime", Fset_visited_file_modtime, |
f5d5eccf | 5334 | Sset_visited_file_modtime, 0, 1, 0, |
570d7624 JB |
5335 | "Update buffer's recorded modification time from the visited file's time.\n\ |
5336 | Useful if the buffer was not read from the file normally\n\ | |
f5d5eccf RS |
5337 | or if the file itself has been changed for some known benign reason.\n\ |
5338 | An argument specifies the modification time value to use\n\ | |
5339 | \(instead of that of the visited file), in the form of a list\n\ | |
5340 | \(HIGH . LOW) or (HIGH LOW).") | |
5341 | (time_list) | |
5342 | Lisp_Object time_list; | |
570d7624 | 5343 | { |
f5d5eccf RS |
5344 | if (!NILP (time_list)) |
5345 | current_buffer->modtime = cons_to_long (time_list); | |
5346 | else | |
5347 | { | |
5348 | register Lisp_Object filename; | |
5349 | struct stat st; | |
5350 | Lisp_Object handler; | |
570d7624 | 5351 | |
f5d5eccf | 5352 | filename = Fexpand_file_name (current_buffer->filename, Qnil); |
32f4334d | 5353 | |
f5d5eccf RS |
5354 | /* If the file name has special constructs in it, |
5355 | call the corresponding file handler. */ | |
49307295 | 5356 | handler = Ffind_file_name_handler (filename, Qset_visited_file_modtime); |
f5d5eccf | 5357 | if (!NILP (handler)) |
caf3c431 | 5358 | /* The handler can find the file name the same way we did. */ |
76c881b0 | 5359 | return call2 (handler, Qset_visited_file_modtime, Qnil); |
b1d1b865 RS |
5360 | |
5361 | filename = ENCODE_FILE (filename); | |
5362 | ||
5363 | if (stat (XSTRING (filename)->data, &st) >= 0) | |
f5d5eccf RS |
5364 | current_buffer->modtime = st.st_mtime; |
5365 | } | |
570d7624 JB |
5366 | |
5367 | return Qnil; | |
5368 | } | |
5369 | \f | |
5370 | Lisp_Object | |
d7f31e22 GM |
5371 | auto_save_error (error) |
5372 | Lisp_Object error; | |
570d7624 | 5373 | { |
d7f31e22 GM |
5374 | Lisp_Object args[3], msg; |
5375 | int i, nbytes; | |
5376 | struct gcpro gcpro1; | |
5377 | ||
570d7624 | 5378 | ring_bell (); |
d7f31e22 GM |
5379 | |
5380 | args[0] = build_string ("Auto-saving %s: %s"); | |
5381 | args[1] = current_buffer->name; | |
5382 | args[2] = Ferror_message_string (error); | |
5383 | msg = Fformat (3, args); | |
5384 | GCPRO1 (msg); | |
5385 | nbytes = STRING_BYTES (XSTRING (msg)); | |
5386 | ||
5387 | for (i = 0; i < 3; ++i) | |
5388 | { | |
5389 | if (i == 0) | |
5390 | message2 (XSTRING (msg)->data, nbytes, STRING_MULTIBYTE (msg)); | |
5391 | else | |
5392 | message2_nolog (XSTRING (msg)->data, nbytes, STRING_MULTIBYTE (msg)); | |
5393 | Fsleep_for (make_number (1), Qnil); | |
5394 | } | |
5395 | ||
5396 | UNGCPRO; | |
570d7624 JB |
5397 | return Qnil; |
5398 | } | |
5399 | ||
5400 | Lisp_Object | |
5401 | auto_save_1 () | |
5402 | { | |
570d7624 JB |
5403 | struct stat st; |
5404 | ||
5405 | /* Get visited file's mode to become the auto save file's mode. */ | |
8801a864 KR |
5406 | if (! NILP (current_buffer->filename) |
5407 | && stat (XSTRING (current_buffer->filename)->data, &st) >= 0) | |
570d7624 JB |
5408 | /* But make sure we can overwrite it later! */ |
5409 | auto_save_mode_bits = st.st_mode | 0600; | |
5410 | else | |
5411 | auto_save_mode_bits = 0666; | |
5412 | ||
5413 | return | |
5414 | Fwrite_region (Qnil, Qnil, | |
5415 | current_buffer->auto_save_file_name, | |
de1d0127 | 5416 | Qnil, Qlambda, Qnil, Qnil); |
570d7624 JB |
5417 | } |
5418 | ||
e54d3b5d | 5419 | static Lisp_Object |
1b335d29 RS |
5420 | do_auto_save_unwind (stream) /* used as unwind-protect function */ |
5421 | Lisp_Object stream; | |
e54d3b5d | 5422 | { |
3be3c08e | 5423 | auto_saving = 0; |
1b335d29 | 5424 | if (!NILP (stream)) |
03699b14 KR |
5425 | fclose ((FILE *) (XFASTINT (XCAR (stream)) << 16 |
5426 | | XFASTINT (XCDR (stream)))); | |
38119822 | 5427 | pop_message (); |
e54d3b5d RS |
5428 | return Qnil; |
5429 | } | |
5430 | ||
a8c828be RS |
5431 | static Lisp_Object |
5432 | do_auto_save_unwind_1 (value) /* used as unwind-protect function */ | |
5433 | Lisp_Object value; | |
5434 | { | |
5435 | minibuffer_auto_raise = XINT (value); | |
5436 | return Qnil; | |
5437 | } | |
5438 | ||
570d7624 JB |
5439 | DEFUN ("do-auto-save", Fdo_auto_save, Sdo_auto_save, 0, 2, "", |
5440 | "Auto-save all buffers that need it.\n\ | |
5441 | This is all buffers that have auto-saving enabled\n\ | |
5442 | and are changed since last auto-saved.\n\ | |
5443 | Auto-saving writes the buffer into a file\n\ | |
5444 | so that your editing is not lost if the system crashes.\n\ | |
012d4cdc RS |
5445 | This file is not the file you visited; that changes only when you save.\n\ |
5446 | Normally we run the normal hook `auto-save-hook' before saving.\n\n\ | |
3b7f6e60 EN |
5447 | A non-nil NO-MESSAGE argument means do not print any message if successful.\n\ |
5448 | A non-nil CURRENT-ONLY argument means save only current buffer.") | |
17857782 JB |
5449 | (no_message, current_only) |
5450 | Lisp_Object no_message, current_only; | |
570d7624 JB |
5451 | { |
5452 | struct buffer *old = current_buffer, *b; | |
5453 | Lisp_Object tail, buf; | |
5454 | int auto_saved = 0; | |
f14b1c68 | 5455 | int do_handled_files; |
ff4c9993 | 5456 | Lisp_Object oquit; |
1b335d29 RS |
5457 | FILE *stream; |
5458 | Lisp_Object lispstream; | |
e54d3b5d | 5459 | int count = specpdl_ptr - specpdl; |
a8c828be | 5460 | int orig_minibuffer_auto_raise = minibuffer_auto_raise; |
c71106e5 | 5461 | int message_p = push_message (); |
9c856db9 | 5462 | |
ff4c9993 RS |
5463 | /* Ordinarily don't quit within this function, |
5464 | but don't make it impossible to quit (in case we get hung in I/O). */ | |
5465 | oquit = Vquit_flag; | |
5466 | Vquit_flag = Qnil; | |
570d7624 JB |
5467 | |
5468 | /* No GCPRO needed, because (when it matters) all Lisp_Object variables | |
5469 | point to non-strings reached from Vbuffer_alist. */ | |
5470 | ||
570d7624 | 5471 | if (minibuf_level) |
17857782 | 5472 | no_message = Qt; |
570d7624 | 5473 | |
265a9e55 | 5474 | if (!NILP (Vrun_hooks)) |
570d7624 JB |
5475 | call1 (Vrun_hooks, intern ("auto-save-hook")); |
5476 | ||
e54d3b5d RS |
5477 | if (STRINGP (Vauto_save_list_file_name)) |
5478 | { | |
0894672f | 5479 | Lisp_Object listfile; |
b272d624 | 5480 | |
258fd2cb | 5481 | listfile = Fexpand_file_name (Vauto_save_list_file_name, Qnil); |
0894672f GM |
5482 | |
5483 | /* Don't try to create the directory when shutting down Emacs, | |
5484 | because creating the directory might signal an error, and | |
5485 | that would leave Emacs in a strange state. */ | |
5486 | if (!NILP (Vrun_hooks)) | |
5487 | { | |
5488 | Lisp_Object dir; | |
5489 | dir = Ffile_name_directory (listfile); | |
5490 | if (NILP (Ffile_directory_p (dir))) | |
5491 | call2 (Qmake_directory, dir, Qt); | |
5492 | } | |
b272d624 | 5493 | |
1b335d29 | 5494 | stream = fopen (XSTRING (listfile)->data, "w"); |
0eff1f85 RS |
5495 | if (stream != NULL) |
5496 | { | |
5497 | /* Arrange to close that file whether or not we get an error. | |
5498 | Also reset auto_saving to 0. */ | |
5499 | lispstream = Fcons (Qnil, Qnil); | |
03699b14 KR |
5500 | XSETFASTINT (XCAR (lispstream), (EMACS_UINT)stream >> 16); |
5501 | XSETFASTINT (XCDR (lispstream), (EMACS_UINT)stream & 0xffff); | |
0eff1f85 RS |
5502 | } |
5503 | else | |
5504 | lispstream = Qnil; | |
e54d3b5d RS |
5505 | } |
5506 | else | |
1b335d29 RS |
5507 | { |
5508 | stream = NULL; | |
5509 | lispstream = Qnil; | |
5510 | } | |
199607e4 | 5511 | |
1b335d29 | 5512 | record_unwind_protect (do_auto_save_unwind, lispstream); |
a8c828be RS |
5513 | record_unwind_protect (do_auto_save_unwind_1, |
5514 | make_number (minibuffer_auto_raise)); | |
5515 | minibuffer_auto_raise = 0; | |
3be3c08e RS |
5516 | auto_saving = 1; |
5517 | ||
f14b1c68 JB |
5518 | /* First, save all files which don't have handlers. If Emacs is |
5519 | crashing, the handlers may tweak what is causing Emacs to crash | |
5520 | in the first place, and it would be a shame if Emacs failed to | |
5521 | autosave perfectly ordinary files because it couldn't handle some | |
5522 | ange-ftp'd file. */ | |
5523 | for (do_handled_files = 0; do_handled_files < 2; do_handled_files++) | |
03699b14 | 5524 | for (tail = Vbuffer_alist; GC_CONSP (tail); tail = XCDR (tail)) |
f14b1c68 | 5525 | { |
03699b14 | 5526 | buf = XCDR (XCAR (tail)); |
f14b1c68 | 5527 | b = XBUFFER (buf); |
199607e4 | 5528 | |
e54d3b5d | 5529 | /* Record all the buffers that have auto save mode |
258fd2cb RS |
5530 | in the special file that lists them. For each of these buffers, |
5531 | Record visited name (if any) and auto save name. */ | |
93c30b5f | 5532 | if (STRINGP (b->auto_save_file_name) |
1b335d29 | 5533 | && stream != NULL && do_handled_files == 0) |
e54d3b5d | 5534 | { |
258fd2cb RS |
5535 | if (!NILP (b->filename)) |
5536 | { | |
1b335d29 | 5537 | fwrite (XSTRING (b->filename)->data, 1, |
fc932ac6 | 5538 | STRING_BYTES (XSTRING (b->filename)), stream); |
258fd2cb | 5539 | } |
1b335d29 RS |
5540 | putc ('\n', stream); |
5541 | fwrite (XSTRING (b->auto_save_file_name)->data, 1, | |
fc932ac6 | 5542 | STRING_BYTES (XSTRING (b->auto_save_file_name)), stream); |
1b335d29 | 5543 | putc ('\n', stream); |
e54d3b5d | 5544 | } |
17857782 | 5545 | |
f14b1c68 JB |
5546 | if (!NILP (current_only) |
5547 | && b != current_buffer) | |
5548 | continue; | |
e54d3b5d | 5549 | |
95385625 RS |
5550 | /* Don't auto-save indirect buffers. |
5551 | The base buffer takes care of it. */ | |
5552 | if (b->base_buffer) | |
5553 | continue; | |
5554 | ||
f14b1c68 JB |
5555 | /* Check for auto save enabled |
5556 | and file changed since last auto save | |
5557 | and file changed since last real save. */ | |
93c30b5f | 5558 | if (STRINGP (b->auto_save_file_name) |
95385625 | 5559 | && BUF_SAVE_MODIFF (b) < BUF_MODIFF (b) |
f14b1c68 | 5560 | && b->auto_save_modified < BUF_MODIFF (b) |
82c2d839 RS |
5561 | /* -1 means we've turned off autosaving for a while--see below. */ |
5562 | && XINT (b->save_length) >= 0 | |
f14b1c68 | 5563 | && (do_handled_files |
49307295 KH |
5564 | || NILP (Ffind_file_name_handler (b->auto_save_file_name, |
5565 | Qwrite_region)))) | |
f14b1c68 | 5566 | { |
b60247d9 RS |
5567 | EMACS_TIME before_time, after_time; |
5568 | ||
5569 | EMACS_GET_TIME (before_time); | |
5570 | ||
5571 | /* If we had a failure, don't try again for 20 minutes. */ | |
5572 | if (b->auto_save_failure_time >= 0 | |
5573 | && EMACS_SECS (before_time) - b->auto_save_failure_time < 1200) | |
5574 | continue; | |
5575 | ||
f14b1c68 JB |
5576 | if ((XFASTINT (b->save_length) * 10 |
5577 | > (BUF_Z (b) - BUF_BEG (b)) * 13) | |
5578 | /* A short file is likely to change a large fraction; | |
5579 | spare the user annoying messages. */ | |
5580 | && XFASTINT (b->save_length) > 5000 | |
5581 | /* These messages are frequent and annoying for `*mail*'. */ | |
5582 | && !EQ (b->filename, Qnil) | |
5583 | && NILP (no_message)) | |
5584 | { | |
5585 | /* It has shrunk too much; turn off auto-saving here. */ | |
a8c828be | 5586 | minibuffer_auto_raise = orig_minibuffer_auto_raise; |
60d67b83 RS |
5587 | message_with_string ("Buffer %s has shrunk a lot; auto save turned off there", |
5588 | b->name, 1); | |
a8c828be | 5589 | minibuffer_auto_raise = 0; |
82c2d839 RS |
5590 | /* Turn off auto-saving until there's a real save, |
5591 | and prevent any more warnings. */ | |
46283abe | 5592 | XSETINT (b->save_length, -1); |
f14b1c68 JB |
5593 | Fsleep_for (make_number (1), Qnil); |
5594 | continue; | |
5595 | } | |
5596 | set_buffer_internal (b); | |
5597 | if (!auto_saved && NILP (no_message)) | |
5598 | message1 ("Auto-saving..."); | |
5599 | internal_condition_case (auto_save_1, Qt, auto_save_error); | |
5600 | auto_saved++; | |
5601 | b->auto_save_modified = BUF_MODIFF (b); | |
2acfd7ae | 5602 | XSETFASTINT (current_buffer->save_length, Z - BEG); |
f14b1c68 | 5603 | set_buffer_internal (old); |
b60247d9 RS |
5604 | |
5605 | EMACS_GET_TIME (after_time); | |
5606 | ||
5607 | /* If auto-save took more than 60 seconds, | |
5608 | assume it was an NFS failure that got a timeout. */ | |
5609 | if (EMACS_SECS (after_time) - EMACS_SECS (before_time) > 60) | |
5610 | b->auto_save_failure_time = EMACS_SECS (after_time); | |
f14b1c68 JB |
5611 | } |
5612 | } | |
570d7624 | 5613 | |
b67f2ca5 RS |
5614 | /* Prevent another auto save till enough input events come in. */ |
5615 | record_auto_save (); | |
570d7624 | 5616 | |
17857782 | 5617 | if (auto_saved && NILP (no_message)) |
f05b275b | 5618 | { |
c71106e5 | 5619 | if (message_p) |
31f3d831 | 5620 | { |
22e59fa7 | 5621 | sit_for (1, 0, 0, 0, 0); |
c71106e5 | 5622 | restore_message (); |
31f3d831 | 5623 | } |
f05b275b KH |
5624 | else |
5625 | message1 ("Auto-saving...done"); | |
5626 | } | |
570d7624 | 5627 | |
ff4c9993 RS |
5628 | Vquit_flag = oquit; |
5629 | ||
e54d3b5d | 5630 | unbind_to (count, Qnil); |
570d7624 JB |
5631 | return Qnil; |
5632 | } | |
5633 | ||
5634 | DEFUN ("set-buffer-auto-saved", Fset_buffer_auto_saved, | |
5635 | Sset_buffer_auto_saved, 0, 0, 0, | |
5636 | "Mark current buffer as auto-saved with its current text.\n\ | |
5637 | No auto-save file will be written until the buffer changes again.") | |
5638 | () | |
5639 | { | |
5640 | current_buffer->auto_save_modified = MODIFF; | |
2acfd7ae | 5641 | XSETFASTINT (current_buffer->save_length, Z - BEG); |
b60247d9 RS |
5642 | current_buffer->auto_save_failure_time = -1; |
5643 | return Qnil; | |
5644 | } | |
5645 | ||
5646 | DEFUN ("clear-buffer-auto-save-failure", Fclear_buffer_auto_save_failure, | |
5647 | Sclear_buffer_auto_save_failure, 0, 0, 0, | |
5648 | "Clear any record of a recent auto-save failure in the current buffer.") | |
5649 | () | |
5650 | { | |
5651 | current_buffer->auto_save_failure_time = -1; | |
570d7624 JB |
5652 | return Qnil; |
5653 | } | |
5654 | ||
5655 | DEFUN ("recent-auto-save-p", Frecent_auto_save_p, Srecent_auto_save_p, | |
5656 | 0, 0, 0, | |
5657 | "Return t if buffer has been auto-saved since last read in or saved.") | |
5658 | () | |
5659 | { | |
95385625 | 5660 | return (SAVE_MODIFF < current_buffer->auto_save_modified) ? Qt : Qnil; |
570d7624 JB |
5661 | } |
5662 | \f | |
5663 | /* Reading and completing file names */ | |
5664 | extern Lisp_Object Ffile_name_completion (), Ffile_name_all_completions (); | |
5665 | ||
6e710ae5 RS |
5666 | /* In the string VAL, change each $ to $$ and return the result. */ |
5667 | ||
5668 | static Lisp_Object | |
5669 | double_dollars (val) | |
5670 | Lisp_Object val; | |
5671 | { | |
5672 | register unsigned char *old, *new; | |
5673 | register int n; | |
5674 | int osize, count; | |
5675 | ||
fc932ac6 | 5676 | osize = STRING_BYTES (XSTRING (val)); |
60d67b83 RS |
5677 | |
5678 | /* Count the number of $ characters. */ | |
6e710ae5 RS |
5679 | for (n = osize, count = 0, old = XSTRING (val)->data; n > 0; n--) |
5680 | if (*old++ == '$') count++; | |
5681 | if (count > 0) | |
5682 | { | |
5683 | old = XSTRING (val)->data; | |
60d67b83 RS |
5684 | val = make_uninit_multibyte_string (XSTRING (val)->size + count, |
5685 | osize + count); | |
6e710ae5 RS |
5686 | new = XSTRING (val)->data; |
5687 | for (n = osize; n > 0; n--) | |
5688 | if (*old != '$') | |
5689 | *new++ = *old++; | |
5690 | else | |
5691 | { | |
5692 | *new++ = '$'; | |
5693 | *new++ = '$'; | |
5694 | old++; | |
5695 | } | |
5696 | } | |
5697 | return val; | |
5698 | } | |
5699 | ||
570d7624 JB |
5700 | DEFUN ("read-file-name-internal", Fread_file_name_internal, Sread_file_name_internal, |
5701 | 3, 3, 0, | |
5702 | "Internal subroutine for read-file-name. Do not call this.") | |
5703 | (string, dir, action) | |
5704 | Lisp_Object string, dir, action; | |
5705 | /* action is nil for complete, t for return list of completions, | |
5706 | lambda for verify final value */ | |
5707 | { | |
5708 | Lisp_Object name, specdir, realdir, val, orig_string; | |
09121adc | 5709 | int changed; |
8ce069f5 | 5710 | struct gcpro gcpro1, gcpro2, gcpro3, gcpro4, gcpro5; |
09121adc | 5711 | |
58cc3710 RS |
5712 | CHECK_STRING (string, 0); |
5713 | ||
09121adc RS |
5714 | realdir = dir; |
5715 | name = string; | |
5716 | orig_string = Qnil; | |
5717 | specdir = Qnil; | |
5718 | changed = 0; | |
5719 | /* No need to protect ACTION--we only compare it with t and nil. */ | |
8ce069f5 | 5720 | GCPRO5 (string, realdir, name, specdir, orig_string); |
570d7624 JB |
5721 | |
5722 | if (XSTRING (string)->size == 0) | |
5723 | { | |
570d7624 | 5724 | if (EQ (action, Qlambda)) |
09121adc RS |
5725 | { |
5726 | UNGCPRO; | |
5727 | return Qnil; | |
5728 | } | |
570d7624 JB |
5729 | } |
5730 | else | |
5731 | { | |
5732 | orig_string = string; | |
5733 | string = Fsubstitute_in_file_name (string); | |
09121adc | 5734 | changed = NILP (Fstring_equal (string, orig_string)); |
570d7624 | 5735 | name = Ffile_name_nondirectory (string); |
09121adc RS |
5736 | val = Ffile_name_directory (string); |
5737 | if (! NILP (val)) | |
5738 | realdir = Fexpand_file_name (val, realdir); | |
570d7624 JB |
5739 | } |
5740 | ||
265a9e55 | 5741 | if (NILP (action)) |
570d7624 JB |
5742 | { |
5743 | specdir = Ffile_name_directory (string); | |
5744 | val = Ffile_name_completion (name, realdir); | |
09121adc | 5745 | UNGCPRO; |
93c30b5f | 5746 | if (!STRINGP (val)) |
570d7624 | 5747 | { |
09121adc | 5748 | if (changed) |
dbd04e01 | 5749 | return double_dollars (string); |
09121adc | 5750 | return val; |
570d7624 JB |
5751 | } |
5752 | ||
265a9e55 | 5753 | if (!NILP (specdir)) |
570d7624 JB |
5754 | val = concat2 (specdir, val); |
5755 | #ifndef VMS | |
6e710ae5 RS |
5756 | return double_dollars (val); |
5757 | #else /* not VMS */ | |
09121adc | 5758 | return val; |
6e710ae5 | 5759 | #endif /* not VMS */ |
570d7624 | 5760 | } |
09121adc | 5761 | UNGCPRO; |
570d7624 JB |
5762 | |
5763 | if (EQ (action, Qt)) | |
5764 | return Ffile_name_all_completions (name, realdir); | |
5765 | /* Only other case actually used is ACTION = lambda */ | |
5766 | #ifdef VMS | |
5767 | /* Supposedly this helps commands such as `cd' that read directory names, | |
5768 | but can someone explain how it helps them? -- RMS */ | |
5769 | if (XSTRING (name)->size == 0) | |
5770 | return Qt; | |
5771 | #endif /* VMS */ | |
5772 | return Ffile_exists_p (string); | |
5773 | } | |
5774 | ||
5775 | DEFUN ("read-file-name", Fread_file_name, Sread_file_name, 1, 5, 0, | |
5776 | "Read file name, prompting with PROMPT and completing in directory DIR.\n\ | |
5777 | Value is not expanded---you must call `expand-file-name' yourself.\n\ | |
3b7f6e60 EN |
5778 | Default name to DEFAULT-FILENAME if user enters a null string.\n\ |
5779 | (If DEFAULT-FILENAME is omitted, the visited file name is used,\n\ | |
3beeedfe | 5780 | except that if INITIAL is specified, that combined with DIR is used.)\n\ |
570d7624 JB |
5781 | Fourth arg MUSTMATCH non-nil means require existing file's name.\n\ |
5782 | Non-nil and non-t means also require confirmation after completion.\n\ | |
5783 | Fifth arg INITIAL specifies text to start with.\n\ | |
0a321fcf GM |
5784 | DIR defaults to current buffer's directory default.\n\ |
5785 | \n\ | |
5786 | If this command was invoked with the mouse, use a file dialog box if\n\ | |
5787 | `use-dialog-box' is non-nil, and the window system or X toolkit in use\n\ | |
5788 | provides a file dialog box..") | |
3b7f6e60 EN |
5789 | (prompt, dir, default_filename, mustmatch, initial) |
5790 | Lisp_Object prompt, dir, default_filename, mustmatch, initial; | |
570d7624 | 5791 | { |
8d6d9fef | 5792 | Lisp_Object val, insdef, tem; |
570d7624 JB |
5793 | struct gcpro gcpro1, gcpro2; |
5794 | register char *homedir; | |
62f555a5 RS |
5795 | int replace_in_history = 0; |
5796 | int add_to_history = 0; | |
570d7624 JB |
5797 | int count; |
5798 | ||
265a9e55 | 5799 | if (NILP (dir)) |
570d7624 | 5800 | dir = current_buffer->directory; |
3b7f6e60 | 5801 | if (NILP (default_filename)) |
3beeedfe RS |
5802 | { |
5803 | if (! NILP (initial)) | |
3b7f6e60 | 5804 | default_filename = Fexpand_file_name (initial, dir); |
3beeedfe | 5805 | else |
3b7f6e60 | 5806 | default_filename = current_buffer->filename; |
3beeedfe | 5807 | } |
570d7624 JB |
5808 | |
5809 | /* If dir starts with user's homedir, change that to ~. */ | |
5810 | homedir = (char *) egetenv ("HOME"); | |
199607e4 | 5811 | #ifdef DOS_NT |
417c884a EZ |
5812 | /* homedir can be NULL in temacs, since Vprocess_environment is not |
5813 | yet set up. We shouldn't crash in that case. */ | |
5814 | if (homedir != 0) | |
5815 | { | |
5816 | homedir = strcpy (alloca (strlen (homedir) + 1), homedir); | |
5817 | CORRECT_DIR_SEPS (homedir); | |
5818 | } | |
199607e4 | 5819 | #endif |
570d7624 | 5820 | if (homedir != 0 |
93c30b5f | 5821 | && STRINGP (dir) |
570d7624 | 5822 | && !strncmp (homedir, XSTRING (dir)->data, strlen (homedir)) |
5e570b75 | 5823 | && IS_DIRECTORY_SEP (XSTRING (dir)->data[strlen (homedir)])) |
570d7624 JB |
5824 | { |
5825 | dir = make_string (XSTRING (dir)->data + strlen (homedir) - 1, | |
fc932ac6 | 5826 | STRING_BYTES (XSTRING (dir)) - strlen (homedir) + 1); |
570d7624 JB |
5827 | XSTRING (dir)->data[0] = '~'; |
5828 | } | |
8d6d9fef AS |
5829 | /* Likewise for default_filename. */ |
5830 | if (homedir != 0 | |
5831 | && STRINGP (default_filename) | |
5832 | && !strncmp (homedir, XSTRING (default_filename)->data, strlen (homedir)) | |
5833 | && IS_DIRECTORY_SEP (XSTRING (default_filename)->data[strlen (homedir)])) | |
5834 | { | |
5835 | default_filename | |
5836 | = make_string (XSTRING (default_filename)->data + strlen (homedir) - 1, | |
5837 | STRING_BYTES (XSTRING (default_filename)) - strlen (homedir) + 1); | |
5838 | XSTRING (default_filename)->data[0] = '~'; | |
5839 | } | |
5840 | if (!NILP (default_filename)) | |
b537a6c7 RS |
5841 | { |
5842 | CHECK_STRING (default_filename, 3); | |
5843 | default_filename = double_dollars (default_filename); | |
5844 | } | |
570d7624 | 5845 | |
58cc3710 | 5846 | if (insert_default_directory && STRINGP (dir)) |
570d7624 JB |
5847 | { |
5848 | insdef = dir; | |
265a9e55 | 5849 | if (!NILP (initial)) |
570d7624 | 5850 | { |
15c65264 | 5851 | Lisp_Object args[2], pos; |
570d7624 JB |
5852 | |
5853 | args[0] = insdef; | |
5854 | args[1] = initial; | |
5855 | insdef = Fconcat (2, args); | |
351bd676 | 5856 | pos = make_number (XSTRING (double_dollars (dir))->size); |
8d6d9fef | 5857 | insdef = Fcons (double_dollars (insdef), pos); |
570d7624 | 5858 | } |
6e710ae5 | 5859 | else |
8d6d9fef | 5860 | insdef = double_dollars (insdef); |
570d7624 | 5861 | } |
58cc3710 | 5862 | else if (STRINGP (initial)) |
8d6d9fef | 5863 | insdef = Fcons (double_dollars (initial), make_number (0)); |
570d7624 | 5864 | else |
8d6d9fef | 5865 | insdef = Qnil; |
570d7624 | 5866 | |
570d7624 | 5867 | count = specpdl_ptr - specpdl; |
a79485af | 5868 | #ifdef VMS |
570d7624 JB |
5869 | specbind (intern ("completion-ignore-case"), Qt); |
5870 | #endif | |
5871 | ||
a79485af RS |
5872 | specbind (intern ("minibuffer-completing-file-name"), Qt); |
5873 | ||
3b7f6e60 | 5874 | GCPRO2 (insdef, default_filename); |
9c856db9 | 5875 | |
f73f57bd | 5876 | #if defined (USE_MOTIF) || defined (HAVE_NTGUI) |
9c856db9 GM |
5877 | if ((NILP (last_nonmenu_event) || CONSP (last_nonmenu_event)) |
5878 | && use_dialog_box | |
5879 | && have_menus_p ()) | |
5880 | { | |
9172b88d GM |
5881 | /* If DIR contains a file name, split it. */ |
5882 | Lisp_Object file; | |
5883 | file = Ffile_name_nondirectory (dir); | |
5884 | if (XSTRING (file)->size && NILP (default_filename)) | |
5885 | { | |
5886 | default_filename = file; | |
5887 | dir = Ffile_name_directory (dir); | |
5888 | } | |
f73f57bd JR |
5889 | if (!NILP(default_filename)) |
5890 | default_filename = Fexpand_file_name (default_filename, dir); | |
9c856db9 GM |
5891 | val = Fx_file_dialog (prompt, dir, default_filename, mustmatch); |
5892 | add_to_history = 1; | |
5893 | } | |
5894 | else | |
5895 | #endif | |
5896 | val = Fcompleting_read (prompt, intern ("read-file-name-internal"), | |
5897 | dir, mustmatch, insdef, | |
5898 | Qfile_name_history, default_filename, Qnil); | |
62f555a5 RS |
5899 | |
5900 | tem = Fsymbol_value (Qfile_name_history); | |
03699b14 | 5901 | if (CONSP (tem) && EQ (XCAR (tem), val)) |
62f555a5 RS |
5902 | replace_in_history = 1; |
5903 | ||
5904 | /* If Fcompleting_read returned the inserted default string itself | |
a8c828be RS |
5905 | (rather than a new string with the same contents), |
5906 | it has to mean that the user typed RET with the minibuffer empty. | |
5907 | In that case, we really want to return "" | |
5908 | so that commands such as set-visited-file-name can distinguish. */ | |
5909 | if (EQ (val, default_filename)) | |
62f555a5 RS |
5910 | { |
5911 | /* In this case, Fcompleting_read has not added an element | |
5912 | to the history. Maybe we should. */ | |
5913 | if (! replace_in_history) | |
5914 | add_to_history = 1; | |
5915 | ||
5916 | val = build_string (""); | |
5917 | } | |
570d7624 | 5918 | |
570d7624 | 5919 | unbind_to (count, Qnil); |
570d7624 | 5920 | UNGCPRO; |
265a9e55 | 5921 | if (NILP (val)) |
570d7624 | 5922 | error ("No file name specified"); |
62f555a5 | 5923 | |
8d6d9fef | 5924 | tem = Fstring_equal (val, CONSP (insdef) ? XCAR (insdef) : insdef); |
62f555a5 | 5925 | |
3b7f6e60 | 5926 | if (!NILP (tem) && !NILP (default_filename)) |
62f555a5 RS |
5927 | val = default_filename; |
5928 | else if (XSTRING (val)->size == 0 && NILP (insdef)) | |
d9bc1c99 | 5929 | { |
3b7f6e60 | 5930 | if (!NILP (default_filename)) |
62f555a5 | 5931 | val = default_filename; |
d9bc1c99 RS |
5932 | else |
5933 | error ("No default file name"); | |
5934 | } | |
62f555a5 | 5935 | val = Fsubstitute_in_file_name (val); |
570d7624 | 5936 | |
62f555a5 RS |
5937 | if (replace_in_history) |
5938 | /* Replace what Fcompleting_read added to the history | |
5939 | with what we will actually return. */ | |
03699b14 | 5940 | XCAR (Fsymbol_value (Qfile_name_history)) = double_dollars (val); |
62f555a5 | 5941 | else if (add_to_history) |
570d7624 | 5942 | { |
62f555a5 RS |
5943 | /* Add the value to the history--but not if it matches |
5944 | the last value already there. */ | |
8d6d9fef | 5945 | Lisp_Object val1 = double_dollars (val); |
62f555a5 | 5946 | tem = Fsymbol_value (Qfile_name_history); |
03699b14 | 5947 | if (! CONSP (tem) || NILP (Fequal (XCAR (tem), val1))) |
62f555a5 | 5948 | Fset (Qfile_name_history, |
8d6d9fef | 5949 | Fcons (val1, tem)); |
570d7624 | 5950 | } |
9c856db9 | 5951 | |
62f555a5 | 5952 | return val; |
570d7624 | 5953 | } |
9c856db9 | 5954 | |
570d7624 | 5955 | \f |
dbda5089 GV |
5956 | void |
5957 | init_fileio_once () | |
5958 | { | |
5959 | /* Must be set before any path manipulation is performed. */ | |
5960 | XSETFASTINT (Vdirectory_sep_char, '/'); | |
5961 | } | |
5962 | ||
9c856db9 | 5963 | \f |
dfcf069d | 5964 | void |
570d7624 JB |
5965 | syms_of_fileio () |
5966 | { | |
0bf2eed2 | 5967 | Qexpand_file_name = intern ("expand-file-name"); |
273e0829 | 5968 | Qsubstitute_in_file_name = intern ("substitute-in-file-name"); |
0bf2eed2 RS |
5969 | Qdirectory_file_name = intern ("directory-file-name"); |
5970 | Qfile_name_directory = intern ("file-name-directory"); | |
5971 | Qfile_name_nondirectory = intern ("file-name-nondirectory"); | |
642ef245 | 5972 | Qunhandled_file_name_directory = intern ("unhandled-file-name-directory"); |
0bf2eed2 | 5973 | Qfile_name_as_directory = intern ("file-name-as-directory"); |
32f4334d | 5974 | Qcopy_file = intern ("copy-file"); |
a6e6e718 | 5975 | Qmake_directory_internal = intern ("make-directory-internal"); |
b272d624 | 5976 | Qmake_directory = intern ("make-directory"); |
32f4334d RS |
5977 | Qdelete_directory = intern ("delete-directory"); |
5978 | Qdelete_file = intern ("delete-file"); | |
5979 | Qrename_file = intern ("rename-file"); | |
5980 | Qadd_name_to_file = intern ("add-name-to-file"); | |
5981 | Qmake_symbolic_link = intern ("make-symbolic-link"); | |
5982 | Qfile_exists_p = intern ("file-exists-p"); | |
5983 | Qfile_executable_p = intern ("file-executable-p"); | |
5984 | Qfile_readable_p = intern ("file-readable-p"); | |
32f4334d | 5985 | Qfile_writable_p = intern ("file-writable-p"); |
1f8653eb RS |
5986 | Qfile_symlink_p = intern ("file-symlink-p"); |
5987 | Qaccess_file = intern ("access-file"); | |
32f4334d | 5988 | Qfile_directory_p = intern ("file-directory-p"); |
adedc71d | 5989 | Qfile_regular_p = intern ("file-regular-p"); |
32f4334d RS |
5990 | Qfile_accessible_directory_p = intern ("file-accessible-directory-p"); |
5991 | Qfile_modes = intern ("file-modes"); | |
5992 | Qset_file_modes = intern ("set-file-modes"); | |
5993 | Qfile_newer_than_file_p = intern ("file-newer-than-file-p"); | |
5994 | Qinsert_file_contents = intern ("insert-file-contents"); | |
5995 | Qwrite_region = intern ("write-region"); | |
5996 | Qverify_visited_file_modtime = intern ("verify-visited-file-modtime"); | |
3ec46acd | 5997 | Qset_visited_file_modtime = intern ("set-visited-file-modtime"); |
32f4334d | 5998 | |
642ef245 | 5999 | staticpro (&Qexpand_file_name); |
273e0829 | 6000 | staticpro (&Qsubstitute_in_file_name); |
642ef245 JB |
6001 | staticpro (&Qdirectory_file_name); |
6002 | staticpro (&Qfile_name_directory); | |
6003 | staticpro (&Qfile_name_nondirectory); | |
6004 | staticpro (&Qunhandled_file_name_directory); | |
6005 | staticpro (&Qfile_name_as_directory); | |
15c65264 | 6006 | staticpro (&Qcopy_file); |
c34b559d | 6007 | staticpro (&Qmake_directory_internal); |
b272d624 | 6008 | staticpro (&Qmake_directory); |
15c65264 RS |
6009 | staticpro (&Qdelete_directory); |
6010 | staticpro (&Qdelete_file); | |
6011 | staticpro (&Qrename_file); | |
6012 | staticpro (&Qadd_name_to_file); | |
6013 | staticpro (&Qmake_symbolic_link); | |
6014 | staticpro (&Qfile_exists_p); | |
6015 | staticpro (&Qfile_executable_p); | |
6016 | staticpro (&Qfile_readable_p); | |
15c65264 | 6017 | staticpro (&Qfile_writable_p); |
1f8653eb RS |
6018 | staticpro (&Qaccess_file); |
6019 | staticpro (&Qfile_symlink_p); | |
15c65264 | 6020 | staticpro (&Qfile_directory_p); |
adedc71d | 6021 | staticpro (&Qfile_regular_p); |
15c65264 RS |
6022 | staticpro (&Qfile_accessible_directory_p); |
6023 | staticpro (&Qfile_modes); | |
6024 | staticpro (&Qset_file_modes); | |
6025 | staticpro (&Qfile_newer_than_file_p); | |
6026 | staticpro (&Qinsert_file_contents); | |
6027 | staticpro (&Qwrite_region); | |
6028 | staticpro (&Qverify_visited_file_modtime); | |
0a61794b | 6029 | staticpro (&Qset_visited_file_modtime); |
642ef245 JB |
6030 | |
6031 | Qfile_name_history = intern ("file-name-history"); | |
6032 | Fset (Qfile_name_history, Qnil); | |
15c65264 RS |
6033 | staticpro (&Qfile_name_history); |
6034 | ||
570d7624 JB |
6035 | Qfile_error = intern ("file-error"); |
6036 | staticpro (&Qfile_error); | |
199607e4 | 6037 | Qfile_already_exists = intern ("file-already-exists"); |
570d7624 | 6038 | staticpro (&Qfile_already_exists); |
c0b7b21c RS |
6039 | Qfile_date_error = intern ("file-date-error"); |
6040 | staticpro (&Qfile_date_error); | |
505ab9bc RS |
6041 | Qexcl = intern ("excl"); |
6042 | staticpro (&Qexcl); | |
570d7624 | 6043 | |
5e570b75 | 6044 | #ifdef DOS_NT |
4c3c22f3 RS |
6045 | Qfind_buffer_file_type = intern ("find-buffer-file-type"); |
6046 | staticpro (&Qfind_buffer_file_type); | |
5e570b75 | 6047 | #endif /* DOS_NT */ |
4c3c22f3 | 6048 | |
b1d1b865 | 6049 | DEFVAR_LISP ("file-name-coding-system", &Vfile_name_coding_system, |
cd913586 KH |
6050 | "*Coding system for encoding file names.\n\ |
6051 | If it is nil, default-file-name-coding-system (which see) is used."); | |
b1d1b865 RS |
6052 | Vfile_name_coding_system = Qnil; |
6053 | ||
cd913586 KH |
6054 | DEFVAR_LISP ("default-file-name-coding-system", |
6055 | &Vdefault_file_name_coding_system, | |
6056 | "Default coding system for encoding file names.\n\ | |
6057 | This variable is used only when file-name-coding-system is nil.\n\ | |
6058 | \n\ | |
6059 | This variable is set/changed by the command set-language-environment.\n\ | |
6060 | User should not set this variable manually,\n\ | |
6061 | instead use file-name-coding-system to get a constant encoding\n\ | |
6062 | of file names regardless of the current language environment."); | |
6063 | Vdefault_file_name_coding_system = Qnil; | |
6064 | ||
0d420e88 | 6065 | DEFVAR_LISP ("auto-save-file-format", &Vauto_save_file_format, |
824a483f | 6066 | "*Format in which to write auto-save files.\n\ |
0d420e88 BG |
6067 | Should be a list of symbols naming formats that are defined in `format-alist'.\n\ |
6068 | If it is t, which is the default, auto-save files are written in the\n\ | |
6069 | same format as a regular save would use."); | |
6070 | Vauto_save_file_format = Qt; | |
6071 | ||
6072 | Qformat_decode = intern ("format-decode"); | |
6073 | staticpro (&Qformat_decode); | |
6074 | Qformat_annotate_function = intern ("format-annotate-function"); | |
6075 | staticpro (&Qformat_annotate_function); | |
6076 | ||
d6a3cc15 RS |
6077 | Qcar_less_than_car = intern ("car-less-than-car"); |
6078 | staticpro (&Qcar_less_than_car); | |
6079 | ||
570d7624 JB |
6080 | Fput (Qfile_error, Qerror_conditions, |
6081 | Fcons (Qfile_error, Fcons (Qerror, Qnil))); | |
6082 | Fput (Qfile_error, Qerror_message, | |
6083 | build_string ("File error")); | |
6084 | ||
6085 | Fput (Qfile_already_exists, Qerror_conditions, | |
6086 | Fcons (Qfile_already_exists, | |
6087 | Fcons (Qfile_error, Fcons (Qerror, Qnil)))); | |
6088 | Fput (Qfile_already_exists, Qerror_message, | |
6089 | build_string ("File already exists")); | |
6090 | ||
c0b7b21c RS |
6091 | Fput (Qfile_date_error, Qerror_conditions, |
6092 | Fcons (Qfile_date_error, | |
6093 | Fcons (Qfile_error, Fcons (Qerror, Qnil)))); | |
6094 | Fput (Qfile_date_error, Qerror_message, | |
6095 | build_string ("Cannot set file date")); | |
6096 | ||
570d7624 JB |
6097 | DEFVAR_BOOL ("insert-default-directory", &insert_default_directory, |
6098 | "*Non-nil means when reading a filename start with default dir in minibuffer."); | |
6099 | insert_default_directory = 1; | |
6100 | ||
6101 | DEFVAR_BOOL ("vms-stmlf-recfm", &vms_stmlf_recfm, | |
6102 | "*Non-nil means write new files with record format `stmlf'.\n\ | |
6103 | nil means use format `var'. This variable is meaningful only on VMS."); | |
6104 | vms_stmlf_recfm = 0; | |
6105 | ||
199607e4 RS |
6106 | DEFVAR_LISP ("directory-sep-char", &Vdirectory_sep_char, |
6107 | "Directory separator character for built-in functions that return file names.\n\ | |
6108 | The value should be either ?/ or ?\\ (any other value is treated as ?\\).\n\ | |
6109 | This variable affects the built-in functions only on Windows,\n\ | |
6110 | on other platforms, it is initialized so that Lisp code can find out\n\ | |
6d6ebdc1 EZ |
6111 | what the normal separator is.\n\ |
6112 | \n\ | |
6113 | WARNING: This variable is deprecated and will be removed in the near\n\ | |
6114 | future. DO NOT USE IT."); | |
199607e4 | 6115 | |
1d1826db RS |
6116 | DEFVAR_LISP ("file-name-handler-alist", &Vfile_name_handler_alist, |
6117 | "*Alist of elements (REGEXP . HANDLER) for file names handled specially.\n\ | |
6118 | If a file name matches REGEXP, then all I/O on that file is done by calling\n\ | |
6119 | HANDLER.\n\ | |
6120 | \n\ | |
6121 | The first argument given to HANDLER is the name of the I/O primitive\n\ | |
6122 | to be handled; the remaining arguments are the arguments that were\n\ | |
6123 | passed to that primitive. For example, if you do\n\ | |
6124 | (file-exists-p FILENAME)\n\ | |
6125 | and FILENAME is handled by HANDLER, then HANDLER is called like this:\n\ | |
642ef245 JB |
6126 | (funcall HANDLER 'file-exists-p FILENAME)\n\ |
6127 | The function `find-file-name-handler' checks this list for a handler\n\ | |
6128 | for its argument."); | |
09121adc RS |
6129 | Vfile_name_handler_alist = Qnil; |
6130 | ||
0414b394 KH |
6131 | DEFVAR_LISP ("set-auto-coding-function", |
6132 | &Vset_auto_coding_function, | |
7fc4808e | 6133 | "If non-nil, a function to call to decide a coding system of file.\n\ |
1255deb9 KH |
6134 | Two arguments are passed to this function: the file name\n\ |
6135 | and the length of a file contents following the point.\n\ | |
6136 | This function should return a coding system to decode the file contents.\n\ | |
6137 | It should check the file name against `auto-coding-alist'.\n\ | |
6138 | If no coding system is decided, it should check a coding system\n\ | |
7fc4808e | 6139 | specified in the heading lines with the format:\n\ |
0414b394 KH |
6140 | -*- ... coding: CODING-SYSTEM; ... -*-\n\ |
6141 | or local variable spec of the tailing lines with `coding:' tag."); | |
6142 | Vset_auto_coding_function = Qnil; | |
c9e82392 | 6143 | |
d6a3cc15 | 6144 | DEFVAR_LISP ("after-insert-file-functions", &Vafter_insert_file_functions, |
246cfea5 RS |
6145 | "A list of functions to be called at the end of `insert-file-contents'.\n\ |
6146 | Each is passed one argument, the number of bytes inserted. It should return\n\ | |
6147 | the new byte count, and leave point the same. If `insert-file-contents' is\n\ | |
6148 | intercepted by a handler from `file-name-handler-alist', that handler is\n\ | |
d6a3cc15 RS |
6149 | responsible for calling the after-insert-file-functions if appropriate."); |
6150 | Vafter_insert_file_functions = Qnil; | |
6151 | ||
6152 | DEFVAR_LISP ("write-region-annotate-functions", &Vwrite_region_annotate_functions, | |
246cfea5 | 6153 | "A list of functions to be called at the start of `write-region'.\n\ |
568aa585 RS |
6154 | Each is passed two arguments, START and END as for `write-region'.\n\ |
6155 | These are usually two numbers but not always; see the documentation\n\ | |
6156 | for `write-region'. The function should return a list of pairs\n\ | |
6157 | of the form (POSITION . STRING), consisting of strings to be effectively\n\ | |
246cfea5 RS |
6158 | inserted at the specified positions of the file being written (1 means to\n\ |
6159 | insert before the first byte written). The POSITIONs must be sorted into\n\ | |
6160 | increasing order. If there are several functions in the list, the several\n\ | |
d6a3cc15 RS |
6161 | lists are merged destructively."); |
6162 | Vwrite_region_annotate_functions = Qnil; | |
6163 | ||
6fc6f94b RS |
6164 | DEFVAR_LISP ("write-region-annotations-so-far", |
6165 | &Vwrite_region_annotations_so_far, | |
6166 | "When an annotation function is called, this holds the previous annotations.\n\ | |
6167 | These are the annotations made by other annotation functions\n\ | |
6168 | that were already called. See also `write-region-annotate-functions'."); | |
6169 | Vwrite_region_annotations_so_far = Qnil; | |
6170 | ||
82c2d839 | 6171 | DEFVAR_LISP ("inhibit-file-name-handlers", &Vinhibit_file_name_handlers, |
268466ed | 6172 | "A list of file name handlers that temporarily should not be used.\n\ |
e3e86241 | 6173 | This applies only to the operation `inhibit-file-name-operation'."); |
82c2d839 RS |
6174 | Vinhibit_file_name_handlers = Qnil; |
6175 | ||
a65970a0 RS |
6176 | DEFVAR_LISP ("inhibit-file-name-operation", &Vinhibit_file_name_operation, |
6177 | "The operation for which `inhibit-file-name-handlers' is applicable."); | |
6178 | Vinhibit_file_name_operation = Qnil; | |
6179 | ||
e54d3b5d | 6180 | DEFVAR_LISP ("auto-save-list-file-name", &Vauto_save_list_file_name, |
51931aca KH |
6181 | "File name in which we write a list of all auto save file names.\n\ |
6182 | This variable is initialized automatically from `auto-save-list-file-prefix'\n\ | |
6183 | shortly after Emacs reads your `.emacs' file, if you have not yet given it\n\ | |
6184 | a non-nil value."); | |
e54d3b5d RS |
6185 | Vauto_save_list_file_name = Qnil; |
6186 | ||
642ef245 | 6187 | defsubr (&Sfind_file_name_handler); |
570d7624 JB |
6188 | defsubr (&Sfile_name_directory); |
6189 | defsubr (&Sfile_name_nondirectory); | |
642ef245 | 6190 | defsubr (&Sunhandled_file_name_directory); |
570d7624 JB |
6191 | defsubr (&Sfile_name_as_directory); |
6192 | defsubr (&Sdirectory_file_name); | |
6193 | defsubr (&Smake_temp_name); | |
6194 | defsubr (&Sexpand_file_name); | |
6195 | defsubr (&Ssubstitute_in_file_name); | |
6196 | defsubr (&Scopy_file); | |
9bbe01fb | 6197 | defsubr (&Smake_directory_internal); |
aa734e17 | 6198 | defsubr (&Sdelete_directory); |
570d7624 JB |
6199 | defsubr (&Sdelete_file); |
6200 | defsubr (&Srename_file); | |
6201 | defsubr (&Sadd_name_to_file); | |
6202 | #ifdef S_IFLNK | |
6203 | defsubr (&Smake_symbolic_link); | |
6204 | #endif /* S_IFLNK */ | |
6205 | #ifdef VMS | |
6206 | defsubr (&Sdefine_logical_name); | |
6207 | #endif /* VMS */ | |
6208 | #ifdef HPUX_NET | |
6209 | defsubr (&Ssysnetunam); | |
6210 | #endif /* HPUX_NET */ | |
6211 | defsubr (&Sfile_name_absolute_p); | |
6212 | defsubr (&Sfile_exists_p); | |
6213 | defsubr (&Sfile_executable_p); | |
6214 | defsubr (&Sfile_readable_p); | |
6215 | defsubr (&Sfile_writable_p); | |
1f8653eb | 6216 | defsubr (&Saccess_file); |
570d7624 JB |
6217 | defsubr (&Sfile_symlink_p); |
6218 | defsubr (&Sfile_directory_p); | |
b72dea2a | 6219 | defsubr (&Sfile_accessible_directory_p); |
f793dc6c | 6220 | defsubr (&Sfile_regular_p); |
570d7624 JB |
6221 | defsubr (&Sfile_modes); |
6222 | defsubr (&Sset_file_modes); | |
c24e9a53 RS |
6223 | defsubr (&Sset_default_file_modes); |
6224 | defsubr (&Sdefault_file_modes); | |
570d7624 JB |
6225 | defsubr (&Sfile_newer_than_file_p); |
6226 | defsubr (&Sinsert_file_contents); | |
6227 | defsubr (&Swrite_region); | |
d6a3cc15 | 6228 | defsubr (&Scar_less_than_car); |
570d7624 JB |
6229 | defsubr (&Sverify_visited_file_modtime); |
6230 | defsubr (&Sclear_visited_file_modtime); | |
f5d5eccf | 6231 | defsubr (&Svisited_file_modtime); |
570d7624 JB |
6232 | defsubr (&Sset_visited_file_modtime); |
6233 | defsubr (&Sdo_auto_save); | |
6234 | defsubr (&Sset_buffer_auto_saved); | |
b60247d9 | 6235 | defsubr (&Sclear_buffer_auto_save_failure); |
570d7624 JB |
6236 | defsubr (&Srecent_auto_save_p); |
6237 | ||
6238 | defsubr (&Sread_file_name_internal); | |
6239 | defsubr (&Sread_file_name); | |
85ffea93 | 6240 | |
483a2e10 | 6241 | #ifdef unix |
85ffea93 | 6242 | defsubr (&Sunix_sync); |
483a2e10 | 6243 | #endif |
570d7624 | 6244 | } |
71e1147d | 6245 |