Commit | Line | Data |
---|---|---|
570d7624 | 1 | /* File IO for GNU Emacs. |
bffd00b0 | 2 | Copyright (C) 1985,86,87,88,93,94,95,96,1997 Free Software Foundation, Inc. |
570d7624 JB |
3 | |
4 | This file is part of GNU Emacs. | |
5 | ||
6 | GNU Emacs is free software; you can redistribute it and/or modify | |
7 | it under the terms of the GNU General Public License as published by | |
4746118a | 8 | the Free Software Foundation; either version 2, or (at your option) |
570d7624 JB |
9 | any later version. |
10 | ||
11 | GNU Emacs is distributed in the hope that it will be useful, | |
12 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
13 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
14 | GNU General Public License for more details. | |
15 | ||
16 | You should have received a copy of the GNU General Public License | |
17 | along with GNU Emacs; see the file COPYING. If not, write to | |
3b7ad313 EN |
18 | the Free Software Foundation, Inc., 59 Temple Place - Suite 330, |
19 | Boston, MA 02111-1307, USA. */ | |
570d7624 | 20 | |
18160b98 | 21 | #include <config.h> |
570d7624 | 22 | |
bb369dc6 RS |
23 | #if defined (USG5) || defined (BSD_SYSTEM) || defined (LINUX) |
24 | #include <fcntl.h> | |
25 | #endif | |
26 | ||
1b335d29 | 27 | #include <stdio.h> |
570d7624 JB |
28 | #include <sys/types.h> |
29 | #include <sys/stat.h> | |
bfb61299 | 30 | |
29beb080 RS |
31 | #ifdef HAVE_UNISTD_H |
32 | #include <unistd.h> | |
33 | #endif | |
34 | ||
f73b0ada BF |
35 | #if !defined (S_ISLNK) && defined (S_IFLNK) |
36 | # define S_ISLNK(m) (((m) & S_IFMT) == S_IFLNK) | |
37 | #endif | |
38 | ||
bb369dc6 RS |
39 | #if !defined (S_ISFIFO) && defined (S_IFIFO) |
40 | # define S_ISFIFO(m) (((m) & S_IFMT) == S_IFIFO) | |
41 | #endif | |
42 | ||
f73b0ada BF |
43 | #if !defined (S_ISREG) && defined (S_IFREG) |
44 | # define S_ISREG(m) (((m) & S_IFMT) == S_IFREG) | |
45 | #endif | |
46 | ||
bfb61299 | 47 | #ifdef VMS |
de5bf5d3 | 48 | #include "vms-pwd.h" |
bfb61299 | 49 | #else |
570d7624 | 50 | #include <pwd.h> |
bfb61299 JB |
51 | #endif |
52 | ||
4c3c22f3 RS |
53 | #ifdef MSDOS |
54 | #include "msdos.h" | |
55 | #include <sys/param.h> | |
01369dc7 RS |
56 | #if __DJGPP__ >= 2 |
57 | #include <fcntl.h> | |
58 | #include <string.h> | |
59 | #endif | |
4c3c22f3 RS |
60 | #endif |
61 | ||
570d7624 | 62 | #include <ctype.h> |
bfb61299 JB |
63 | |
64 | #ifdef VMS | |
3d9f5ce2 | 65 | #include "vmsdir.h" |
bfb61299 JB |
66 | #include <perror.h> |
67 | #include <stddef.h> | |
68 | #include <string.h> | |
bfb61299 JB |
69 | #endif |
70 | ||
570d7624 JB |
71 | #include <errno.h> |
72 | ||
bfb61299 | 73 | #ifndef vax11c |
570d7624 | 74 | extern int errno; |
570d7624 JB |
75 | #endif |
76 | ||
ce97267f | 77 | extern char *strerror (); |
570d7624 JB |
78 | |
79 | #ifdef APOLLO | |
80 | #include <sys/time.h> | |
81 | #endif | |
82 | ||
6e23c83e JB |
83 | #ifndef USG |
84 | #ifndef VMS | |
85 | #ifndef BSD4_1 | |
5e570b75 | 86 | #ifndef WINDOWSNT |
6e23c83e JB |
87 | #define HAVE_FSYNC |
88 | #endif | |
89 | #endif | |
90 | #endif | |
5e570b75 | 91 | #endif |
6e23c83e | 92 | |
570d7624 | 93 | #include "lisp.h" |
8d4e077b | 94 | #include "intervals.h" |
570d7624 | 95 | #include "buffer.h" |
6fdaa9a0 KH |
96 | #include "charset.h" |
97 | #include "coding.h" | |
570d7624 JB |
98 | #include "window.h" |
99 | ||
5e570b75 RS |
100 | #ifdef WINDOWSNT |
101 | #define NOMINMAX 1 | |
102 | #include <windows.h> | |
103 | #include <stdlib.h> | |
104 | #include <fcntl.h> | |
105 | #endif /* not WINDOWSNT */ | |
106 | ||
199607e4 RS |
107 | #ifdef DOS_NT |
108 | #define CORRECT_DIR_SEPS(s) \ | |
109 | do { if ('/' == DIRECTORY_SEP) dostounix_filename (s); \ | |
110 | else unixtodos_filename (s); \ | |
111 | } while (0) | |
112 | /* On Windows, drive letters must be alphabetic - on DOS, the Netware | |
113 | redirector allows the six letters between 'Z' and 'a' as well. */ | |
114 | #ifdef MSDOS | |
115 | #define IS_DRIVE(x) ((x) >= 'A' && (x) <= 'z') | |
116 | #endif | |
117 | #ifdef WINDOWSNT | |
118 | #define IS_DRIVE(x) isalpha (x) | |
119 | #endif | |
f54b565c MB |
120 | /* Need to lower-case the drive letter, or else expanded |
121 | filenames will sometimes compare inequal, because | |
122 | `expand-file-name' doesn't always down-case the drive letter. */ | |
123 | #define DRIVE_LETTER(x) (tolower (x)) | |
199607e4 RS |
124 | #endif |
125 | ||
570d7624 | 126 | #ifdef VMS |
570d7624 JB |
127 | #include <file.h> |
128 | #include <rmsdef.h> | |
129 | #include <fab.h> | |
130 | #include <nam.h> | |
131 | #endif | |
132 | ||
de5bf5d3 | 133 | #include "systime.h" |
570d7624 JB |
134 | |
135 | #ifdef HPUX | |
136 | #include <netio.h> | |
9b7828a5 | 137 | #ifndef HPUX8 |
47e7b9e5 | 138 | #ifndef HPUX9 |
570d7624 JB |
139 | #include <errnet.h> |
140 | #endif | |
9b7828a5 | 141 | #endif |
47e7b9e5 | 142 | #endif |
570d7624 JB |
143 | |
144 | #ifndef O_WRONLY | |
145 | #define O_WRONLY 1 | |
146 | #endif | |
147 | ||
4018b5ef RS |
148 | #ifndef O_RDONLY |
149 | #define O_RDONLY 0 | |
150 | #endif | |
151 | ||
570d7624 JB |
152 | #define min(a, b) ((a) < (b) ? (a) : (b)) |
153 | #define max(a, b) ((a) > (b) ? (a) : (b)) | |
154 | ||
b1d1b865 RS |
155 | /* Encode the file name NAME using the specified coding system |
156 | for file names, if any. */ | |
157 | #define ENCODE_FILE(name) \ | |
158 | (! NILP (Vfile_name_coding_system) \ | |
159 | && XFASTINT (Vfile_name_coding_system) != 0 \ | |
160 | ? Fencode_coding_string (name, Vfile_name_coding_system, Qt) \ | |
161 | : name) | |
162 | ||
570d7624 JB |
163 | /* Nonzero during writing of auto-save files */ |
164 | int auto_saving; | |
165 | ||
166 | /* Set by auto_save_1 to mode of original file so Fwrite_region will create | |
167 | a new file with the same mode as the original */ | |
168 | int auto_save_mode_bits; | |
169 | ||
b1d1b865 RS |
170 | /* Coding system for file names, or nil if none. */ |
171 | Lisp_Object Vfile_name_coding_system; | |
172 | ||
199607e4 | 173 | /* Alist of elements (REGEXP . HANDLER) for file names |
32f4334d RS |
174 | whose I/O is done with a special handler. */ |
175 | Lisp_Object Vfile_name_handler_alist; | |
176 | ||
0d420e88 BG |
177 | /* Format for auto-save files */ |
178 | Lisp_Object Vauto_save_file_format; | |
179 | ||
180 | /* Lisp functions for translating file formats */ | |
181 | Lisp_Object Qformat_decode, Qformat_annotate_function; | |
182 | ||
c9e82392 | 183 | /* Function to be called to decide a coding system of a reading file. */ |
0414b394 | 184 | Lisp_Object Vset_auto_coding_function; |
c9e82392 | 185 | |
d6a3cc15 RS |
186 | /* Functions to be called to process text properties in inserted file. */ |
187 | Lisp_Object Vafter_insert_file_functions; | |
188 | ||
189 | /* Functions to be called to create text property annotations for file. */ | |
190 | Lisp_Object Vwrite_region_annotate_functions; | |
191 | ||
6fc6f94b RS |
192 | /* During build_annotations, each time an annotation function is called, |
193 | this holds the annotations made by the previous functions. */ | |
194 | Lisp_Object Vwrite_region_annotations_so_far; | |
195 | ||
e54d3b5d RS |
196 | /* File name in which we write a list of all our auto save files. */ |
197 | Lisp_Object Vauto_save_list_file_name; | |
198 | ||
570d7624 JB |
199 | /* Nonzero means, when reading a filename in the minibuffer, |
200 | start out by inserting the default directory into the minibuffer. */ | |
201 | int insert_default_directory; | |
202 | ||
203 | /* On VMS, nonzero means write new files with record format stmlf. | |
204 | Zero means use var format. */ | |
205 | int vms_stmlf_recfm; | |
206 | ||
199607e4 RS |
207 | /* On NT, specifies the directory separator character, used (eg.) when |
208 | expanding file names. This can be bound to / or \. */ | |
209 | Lisp_Object Vdirectory_sep_char; | |
210 | ||
84f6296a RS |
211 | extern Lisp_Object Vuser_login_name; |
212 | ||
213 | extern int minibuf_level; | |
214 | ||
a8c828be RS |
215 | extern int minibuffer_auto_raise; |
216 | ||
a65970a0 RS |
217 | /* These variables describe handlers that have "already" had a chance |
218 | to handle the current operation. | |
219 | ||
220 | Vinhibit_file_name_handlers is a list of file name handlers. | |
221 | Vinhibit_file_name_operation is the operation being handled. | |
222 | If we try to handle that operation, we ignore those handlers. */ | |
223 | ||
82c2d839 | 224 | static Lisp_Object Vinhibit_file_name_handlers; |
a65970a0 | 225 | static Lisp_Object Vinhibit_file_name_operation; |
82c2d839 | 226 | |
c0b7b21c | 227 | Lisp_Object Qfile_error, Qfile_already_exists, Qfile_date_error; |
570d7624 | 228 | |
15c65264 RS |
229 | Lisp_Object Qfile_name_history; |
230 | ||
d6a3cc15 RS |
231 | Lisp_Object Qcar_less_than_car; |
232 | ||
570d7624 JB |
233 | report_file_error (string, data) |
234 | char *string; | |
235 | Lisp_Object data; | |
236 | { | |
237 | Lisp_Object errstring; | |
238 | ||
a1f17b2d | 239 | errstring = build_string (strerror (errno)); |
570d7624 JB |
240 | |
241 | /* System error messages are capitalized. Downcase the initial | |
242 | unless it is followed by a slash. */ | |
243 | if (XSTRING (errstring)->data[1] != '/') | |
244 | XSTRING (errstring)->data[0] = DOWNCASE (XSTRING (errstring)->data[0]); | |
245 | ||
246 | while (1) | |
247 | Fsignal (Qfile_error, | |
248 | Fcons (build_string (string), Fcons (errstring, data))); | |
249 | } | |
b5148e85 RS |
250 | |
251 | close_file_unwind (fd) | |
252 | Lisp_Object fd; | |
253 | { | |
254 | close (XFASTINT (fd)); | |
255 | } | |
a1d2b64a RS |
256 | |
257 | /* Restore point, having saved it as a marker. */ | |
258 | ||
259 | restore_point_unwind (location) | |
199607e4 | 260 | Lisp_Object location; |
a1d2b64a RS |
261 | { |
262 | SET_PT (marker_position (location)); | |
263 | Fset_marker (location, Qnil, Qnil); | |
264 | } | |
570d7624 | 265 | \f |
0bf2eed2 | 266 | Lisp_Object Qexpand_file_name; |
273e0829 | 267 | Lisp_Object Qsubstitute_in_file_name; |
0bf2eed2 RS |
268 | Lisp_Object Qdirectory_file_name; |
269 | Lisp_Object Qfile_name_directory; | |
270 | Lisp_Object Qfile_name_nondirectory; | |
642ef245 | 271 | Lisp_Object Qunhandled_file_name_directory; |
0bf2eed2 | 272 | Lisp_Object Qfile_name_as_directory; |
32f4334d | 273 | Lisp_Object Qcopy_file; |
a6e6e718 | 274 | Lisp_Object Qmake_directory_internal; |
32f4334d RS |
275 | Lisp_Object Qdelete_directory; |
276 | Lisp_Object Qdelete_file; | |
277 | Lisp_Object Qrename_file; | |
278 | Lisp_Object Qadd_name_to_file; | |
279 | Lisp_Object Qmake_symbolic_link; | |
280 | Lisp_Object Qfile_exists_p; | |
281 | Lisp_Object Qfile_executable_p; | |
282 | Lisp_Object Qfile_readable_p; | |
32f4334d | 283 | Lisp_Object Qfile_writable_p; |
1f8653eb RS |
284 | Lisp_Object Qfile_symlink_p; |
285 | Lisp_Object Qaccess_file; | |
32f4334d | 286 | Lisp_Object Qfile_directory_p; |
adedc71d | 287 | Lisp_Object Qfile_regular_p; |
32f4334d RS |
288 | Lisp_Object Qfile_accessible_directory_p; |
289 | Lisp_Object Qfile_modes; | |
290 | Lisp_Object Qset_file_modes; | |
291 | Lisp_Object Qfile_newer_than_file_p; | |
292 | Lisp_Object Qinsert_file_contents; | |
293 | Lisp_Object Qwrite_region; | |
294 | Lisp_Object Qverify_visited_file_modtime; | |
3ec46acd | 295 | Lisp_Object Qset_visited_file_modtime; |
32f4334d | 296 | |
49307295 KH |
297 | DEFUN ("find-file-name-handler", Ffind_file_name_handler, Sfind_file_name_handler, 2, 2, 0, |
298 | "Return FILENAME's handler function for OPERATION, if it has one.\n\ | |
642ef245 JB |
299 | Otherwise, return nil.\n\ |
300 | A file name is handled if one of the regular expressions in\n\ | |
82c2d839 | 301 | `file-name-handler-alist' matches it.\n\n\ |
a65970a0 RS |
302 | If OPERATION equals `inhibit-file-name-operation', then we ignore\n\ |
303 | any handlers that are members of `inhibit-file-name-handlers',\n\ | |
304 | but we still do run any other handlers. This lets handlers\n\ | |
82c2d839 | 305 | use the standard functions without calling themselves recursively.") |
49307295 KH |
306 | (filename, operation) |
307 | Lisp_Object filename, operation; | |
32f4334d | 308 | { |
642ef245 | 309 | /* This function must not munge the match data. */ |
a65970a0 | 310 | Lisp_Object chain, inhibited_handlers; |
642ef245 | 311 | |
e4432095 JB |
312 | CHECK_STRING (filename, 0); |
313 | ||
a65970a0 RS |
314 | if (EQ (operation, Vinhibit_file_name_operation)) |
315 | inhibited_handlers = Vinhibit_file_name_handlers; | |
316 | else | |
317 | inhibited_handlers = Qnil; | |
82c2d839 | 318 | |
93c30b5f | 319 | for (chain = Vfile_name_handler_alist; CONSP (chain); |
32f4334d RS |
320 | chain = XCONS (chain)->cdr) |
321 | { | |
322 | Lisp_Object elt; | |
323 | elt = XCONS (chain)->car; | |
93c30b5f | 324 | if (CONSP (elt)) |
32f4334d RS |
325 | { |
326 | Lisp_Object string; | |
327 | string = XCONS (elt)->car; | |
93c30b5f | 328 | if (STRINGP (string) && fast_string_match (string, filename) >= 0) |
a65970a0 RS |
329 | { |
330 | Lisp_Object handler, tem; | |
331 | ||
332 | handler = XCONS (elt)->cdr; | |
333 | tem = Fmemq (handler, inhibited_handlers); | |
334 | if (NILP (tem)) | |
335 | return handler; | |
336 | } | |
32f4334d | 337 | } |
642ef245 JB |
338 | |
339 | QUIT; | |
32f4334d RS |
340 | } |
341 | return Qnil; | |
342 | } | |
343 | \f | |
570d7624 JB |
344 | DEFUN ("file-name-directory", Ffile_name_directory, Sfile_name_directory, |
345 | 1, 1, 0, | |
3b7f6e60 EN |
346 | "Return the directory component in file name FILENAME.\n\ |
347 | Return nil if FILENAME does not include a directory.\n\ | |
570d7624 JB |
348 | Otherwise return a directory spec.\n\ |
349 | Given a Unix syntax file name, returns a string ending in slash;\n\ | |
350 | on VMS, perhaps instead a string ending in `:', `]' or `>'.") | |
3b7f6e60 EN |
351 | (filename) |
352 | Lisp_Object filename; | |
570d7624 JB |
353 | { |
354 | register unsigned char *beg; | |
355 | register unsigned char *p; | |
0bf2eed2 | 356 | Lisp_Object handler; |
570d7624 | 357 | |
3b7f6e60 | 358 | CHECK_STRING (filename, 0); |
570d7624 | 359 | |
0bf2eed2 RS |
360 | /* If the file name has special constructs in it, |
361 | call the corresponding file handler. */ | |
3b7f6e60 | 362 | handler = Ffind_file_name_handler (filename, Qfile_name_directory); |
0bf2eed2 | 363 | if (!NILP (handler)) |
3b7f6e60 | 364 | return call2 (handler, Qfile_name_directory, filename); |
0bf2eed2 | 365 | |
4c3c22f3 | 366 | #ifdef FILE_SYSTEM_CASE |
3b7f6e60 | 367 | filename = FILE_SYSTEM_CASE (filename); |
4c3c22f3 | 368 | #endif |
3b7f6e60 | 369 | beg = XSTRING (filename)->data; |
199607e4 RS |
370 | #ifdef DOS_NT |
371 | beg = strcpy (alloca (strlen (beg) + 1), beg); | |
372 | #endif | |
3b7f6e60 | 373 | p = beg + XSTRING (filename)->size; |
570d7624 | 374 | |
199607e4 | 375 | while (p != beg && !IS_DIRECTORY_SEP (p[-1]) |
570d7624 JB |
376 | #ifdef VMS |
377 | && p[-1] != ':' && p[-1] != ']' && p[-1] != '>' | |
378 | #endif /* VMS */ | |
199607e4 RS |
379 | #ifdef DOS_NT |
380 | /* only recognise drive specifier at beginning */ | |
381 | && !(p[-1] == ':' && p == beg + 2) | |
382 | #endif | |
570d7624 JB |
383 | ) p--; |
384 | ||
385 | if (p == beg) | |
386 | return Qnil; | |
5e570b75 | 387 | #ifdef DOS_NT |
4c3c22f3 RS |
388 | /* Expansion of "c:" to drive and default directory. */ |
389 | if (p == beg + 2 && beg[1] == ':') | |
390 | { | |
4c3c22f3 | 391 | /* MAXPATHLEN+1 is guaranteed to be enough space for getdefdir. */ |
199607e4 RS |
392 | unsigned char *res = alloca (MAXPATHLEN + 1); |
393 | if (getdefdir (toupper (*beg) - 'A' + 1, res)) | |
4c3c22f3 | 394 | { |
199607e4 | 395 | if (!IS_DIRECTORY_SEP (res[strlen (res) - 1])) |
4c3c22f3 RS |
396 | strcat (res, "/"); |
397 | beg = res; | |
398 | p = beg + strlen (beg); | |
399 | } | |
400 | } | |
199607e4 | 401 | CORRECT_DIR_SEPS (beg); |
5e570b75 | 402 | #endif /* DOS_NT */ |
570d7624 JB |
403 | return make_string (beg, p - beg); |
404 | } | |
405 | ||
406 | DEFUN ("file-name-nondirectory", Ffile_name_nondirectory, Sfile_name_nondirectory, | |
407 | 1, 1, 0, | |
3b7f6e60 | 408 | "Return file name FILENAME sans its directory.\n\ |
570d7624 JB |
409 | For example, in a Unix-syntax file name,\n\ |
410 | this is everything after the last slash,\n\ | |
411 | or the entire name if it contains no slash.") | |
3b7f6e60 EN |
412 | (filename) |
413 | Lisp_Object filename; | |
570d7624 JB |
414 | { |
415 | register unsigned char *beg, *p, *end; | |
0bf2eed2 | 416 | Lisp_Object handler; |
570d7624 | 417 | |
3b7f6e60 | 418 | CHECK_STRING (filename, 0); |
570d7624 | 419 | |
0bf2eed2 RS |
420 | /* If the file name has special constructs in it, |
421 | call the corresponding file handler. */ | |
3b7f6e60 | 422 | handler = Ffind_file_name_handler (filename, Qfile_name_nondirectory); |
0bf2eed2 | 423 | if (!NILP (handler)) |
3b7f6e60 | 424 | return call2 (handler, Qfile_name_nondirectory, filename); |
0bf2eed2 | 425 | |
3b7f6e60 EN |
426 | beg = XSTRING (filename)->data; |
427 | end = p = beg + XSTRING (filename)->size; | |
570d7624 | 428 | |
199607e4 | 429 | while (p != beg && !IS_DIRECTORY_SEP (p[-1]) |
570d7624 JB |
430 | #ifdef VMS |
431 | && p[-1] != ':' && p[-1] != ']' && p[-1] != '>' | |
432 | #endif /* VMS */ | |
199607e4 RS |
433 | #ifdef DOS_NT |
434 | /* only recognise drive specifier at beginning */ | |
435 | && !(p[-1] == ':' && p == beg + 2) | |
436 | #endif | |
570d7624 JB |
437 | ) p--; |
438 | ||
439 | return make_string (p, end - p); | |
440 | } | |
642ef245 JB |
441 | |
442 | DEFUN ("unhandled-file-name-directory", Funhandled_file_name_directory, Sunhandled_file_name_directory, 1, 1, 0, | |
443 | "Return a directly usable directory name somehow associated with FILENAME.\n\ | |
444 | A `directly usable' directory name is one that may be used without the\n\ | |
445 | intervention of any file handler.\n\ | |
446 | If FILENAME is a directly usable file itself, return\n\ | |
447 | (file-name-directory FILENAME).\n\ | |
448 | The `call-process' and `start-process' functions use this function to\n\ | |
449 | get a current directory to run processes in.") | |
450 | (filename) | |
451 | Lisp_Object filename; | |
452 | { | |
453 | Lisp_Object handler; | |
454 | ||
455 | /* If the file name has special constructs in it, | |
456 | call the corresponding file handler. */ | |
49307295 | 457 | handler = Ffind_file_name_handler (filename, Qunhandled_file_name_directory); |
642ef245 JB |
458 | if (!NILP (handler)) |
459 | return call2 (handler, Qunhandled_file_name_directory, filename); | |
460 | ||
461 | return Ffile_name_directory (filename); | |
462 | } | |
463 | ||
570d7624 JB |
464 | \f |
465 | char * | |
466 | file_name_as_directory (out, in) | |
467 | char *out, *in; | |
468 | { | |
469 | int size = strlen (in) - 1; | |
470 | ||
471 | strcpy (out, in); | |
472 | ||
473 | #ifdef VMS | |
474 | /* Is it already a directory string? */ | |
475 | if (in[size] == ':' || in[size] == ']' || in[size] == '>') | |
476 | return out; | |
477 | /* Is it a VMS directory file name? If so, hack VMS syntax. */ | |
478 | else if (! index (in, '/') | |
479 | && ((size > 3 && ! strcmp (&in[size - 3], ".DIR")) | |
480 | || (size > 3 && ! strcmp (&in[size - 3], ".dir")) | |
481 | || (size > 5 && (! strncmp (&in[size - 5], ".DIR", 4) | |
482 | || ! strncmp (&in[size - 5], ".dir", 4)) | |
483 | && (in[size - 1] == '.' || in[size - 1] == ';') | |
484 | && in[size] == '1'))) | |
485 | { | |
486 | register char *p, *dot; | |
487 | char brack; | |
488 | ||
489 | /* x.dir -> [.x] | |
490 | dir:x.dir --> dir:[x] | |
491 | dir:[x]y.dir --> dir:[x.y] */ | |
492 | p = in + size; | |
493 | while (p != in && *p != ':' && *p != '>' && *p != ']') p--; | |
494 | if (p != in) | |
495 | { | |
496 | strncpy (out, in, p - in); | |
497 | out[p - in] = '\0'; | |
498 | if (*p == ':') | |
499 | { | |
500 | brack = ']'; | |
501 | strcat (out, ":["); | |
502 | } | |
503 | else | |
504 | { | |
505 | brack = *p; | |
506 | strcat (out, "."); | |
507 | } | |
508 | p++; | |
509 | } | |
510 | else | |
511 | { | |
512 | brack = ']'; | |
513 | strcpy (out, "[."); | |
514 | } | |
bfb61299 JB |
515 | dot = index (p, '.'); |
516 | if (dot) | |
570d7624 JB |
517 | { |
518 | /* blindly remove any extension */ | |
519 | size = strlen (out) + (dot - p); | |
520 | strncat (out, p, dot - p); | |
521 | } | |
522 | else | |
523 | { | |
524 | strcat (out, p); | |
525 | size = strlen (out); | |
526 | } | |
527 | out[size++] = brack; | |
528 | out[size] = '\0'; | |
529 | } | |
530 | #else /* not VMS */ | |
531 | /* For Unix syntax, Append a slash if necessary */ | |
199607e4 | 532 | if (!IS_DIRECTORY_SEP (out[size])) |
5e570b75 RS |
533 | { |
534 | out[size + 1] = DIRECTORY_SEP; | |
535 | out[size + 2] = '\0'; | |
536 | } | |
199607e4 RS |
537 | #ifdef DOS_NT |
538 | CORRECT_DIR_SEPS (out); | |
539 | #endif | |
570d7624 JB |
540 | #endif /* not VMS */ |
541 | return out; | |
542 | } | |
543 | ||
544 | DEFUN ("file-name-as-directory", Ffile_name_as_directory, | |
545 | Sfile_name_as_directory, 1, 1, 0, | |
546 | "Return a string representing file FILENAME interpreted as a directory.\n\ | |
547 | This operation exists because a directory is also a file, but its name as\n\ | |
548 | a directory is different from its name as a file.\n\ | |
549 | The result can be used as the value of `default-directory'\n\ | |
550 | or passed as second argument to `expand-file-name'.\n\ | |
551 | For a Unix-syntax file name, just appends a slash.\n\ | |
552 | On VMS, converts \"[X]FOO.DIR\" to \"[X.FOO]\", etc.") | |
553 | (file) | |
554 | Lisp_Object file; | |
555 | { | |
556 | char *buf; | |
0bf2eed2 | 557 | Lisp_Object handler; |
570d7624 JB |
558 | |
559 | CHECK_STRING (file, 0); | |
265a9e55 | 560 | if (NILP (file)) |
570d7624 | 561 | return Qnil; |
0bf2eed2 RS |
562 | |
563 | /* If the file name has special constructs in it, | |
564 | call the corresponding file handler. */ | |
49307295 | 565 | handler = Ffind_file_name_handler (file, Qfile_name_as_directory); |
0bf2eed2 RS |
566 | if (!NILP (handler)) |
567 | return call2 (handler, Qfile_name_as_directory, file); | |
568 | ||
570d7624 JB |
569 | buf = (char *) alloca (XSTRING (file)->size + 10); |
570 | return build_string (file_name_as_directory (buf, XSTRING (file)->data)); | |
571 | } | |
572 | \f | |
573 | /* | |
574 | * Convert from directory name to filename. | |
575 | * On VMS: | |
576 | * xyzzy:[mukesh.emacs] => xyzzy:[mukesh]emacs.dir.1 | |
577 | * xyzzy:[mukesh] => xyzzy:[000000]mukesh.dir.1 | |
199607e4 | 578 | * On UNIX, it's simple: just make sure there isn't a terminating / |
570d7624 JB |
579 | |
580 | * Value is nonzero if the string output is different from the input. | |
581 | */ | |
582 | ||
583 | directory_file_name (src, dst) | |
584 | char *src, *dst; | |
585 | { | |
586 | long slen; | |
587 | #ifdef VMS | |
588 | long rlen; | |
589 | char * ptr, * rptr; | |
590 | char bracket; | |
591 | struct FAB fab = cc$rms_fab; | |
592 | struct NAM nam = cc$rms_nam; | |
593 | char esa[NAM$C_MAXRSS]; | |
594 | #endif /* VMS */ | |
595 | ||
596 | slen = strlen (src); | |
597 | #ifdef VMS | |
598 | if (! index (src, '/') | |
599 | && (src[slen - 1] == ']' | |
600 | || src[slen - 1] == ':' | |
601 | || src[slen - 1] == '>')) | |
602 | { | |
603 | /* VMS style - convert [x.y.z] to [x.y]z, [x] to [000000]x */ | |
604 | fab.fab$l_fna = src; | |
605 | fab.fab$b_fns = slen; | |
606 | fab.fab$l_nam = &nam; | |
607 | fab.fab$l_fop = FAB$M_NAM; | |
608 | ||
609 | nam.nam$l_esa = esa; | |
610 | nam.nam$b_ess = sizeof esa; | |
611 | nam.nam$b_nop |= NAM$M_SYNCHK; | |
612 | ||
613 | /* We call SYS$PARSE to handle such things as [--] for us. */ | |
199607e4 | 614 | if (SYS$PARSE (&fab, 0, 0) == RMS$_NORMAL) |
570d7624 JB |
615 | { |
616 | slen = nam.nam$b_esl; | |
617 | if (esa[slen - 1] == ';' && esa[slen - 2] == '.') | |
618 | slen -= 2; | |
619 | esa[slen] = '\0'; | |
620 | src = esa; | |
621 | } | |
622 | if (src[slen - 1] != ']' && src[slen - 1] != '>') | |
623 | { | |
624 | /* what about when we have logical_name:???? */ | |
625 | if (src[slen - 1] == ':') | |
5e570b75 | 626 | { /* Xlate logical name and see what we get */ |
570d7624 JB |
627 | ptr = strcpy (dst, src); /* upper case for getenv */ |
628 | while (*ptr) | |
629 | { | |
630 | if ('a' <= *ptr && *ptr <= 'z') | |
631 | *ptr -= 040; | |
632 | ptr++; | |
633 | } | |
5e570b75 | 634 | dst[slen - 1] = 0; /* remove colon */ |
570d7624 JB |
635 | if (!(src = egetenv (dst))) |
636 | return 0; | |
637 | /* should we jump to the beginning of this procedure? | |
638 | Good points: allows us to use logical names that xlate | |
639 | to Unix names, | |
640 | Bad points: can be a problem if we just translated to a device | |
641 | name... | |
642 | For now, I'll punt and always expect VMS names, and hope for | |
643 | the best! */ | |
644 | slen = strlen (src); | |
645 | if (src[slen - 1] != ']' && src[slen - 1] != '>') | |
646 | { /* no recursion here! */ | |
647 | strcpy (dst, src); | |
648 | return 0; | |
649 | } | |
650 | } | |
651 | else | |
5e570b75 | 652 | { /* not a directory spec */ |
570d7624 JB |
653 | strcpy (dst, src); |
654 | return 0; | |
655 | } | |
656 | } | |
657 | bracket = src[slen - 1]; | |
658 | ||
659 | /* If bracket is ']' or '>', bracket - 2 is the corresponding | |
660 | opening bracket. */ | |
bfb61299 JB |
661 | ptr = index (src, bracket - 2); |
662 | if (ptr == 0) | |
570d7624 JB |
663 | { /* no opening bracket */ |
664 | strcpy (dst, src); | |
665 | return 0; | |
666 | } | |
667 | if (!(rptr = rindex (src, '.'))) | |
668 | rptr = ptr; | |
669 | slen = rptr - src; | |
670 | strncpy (dst, src, slen); | |
671 | dst[slen] = '\0'; | |
672 | if (*rptr == '.') | |
673 | { | |
674 | dst[slen++] = bracket; | |
675 | dst[slen] = '\0'; | |
676 | } | |
677 | else | |
678 | { | |
679 | /* If we have the top-level of a rooted directory (i.e. xx:[000000]), | |
680 | then translate the device and recurse. */ | |
681 | if (dst[slen - 1] == ':' | |
5e570b75 | 682 | && dst[slen - 2] != ':' /* skip decnet nodes */ |
199607e4 | 683 | && strcmp (src + slen, "[000000]") == 0) |
570d7624 JB |
684 | { |
685 | dst[slen - 1] = '\0'; | |
686 | if ((ptr = egetenv (dst)) | |
687 | && (rlen = strlen (ptr) - 1) > 0 | |
688 | && (ptr[rlen] == ']' || ptr[rlen] == '>') | |
689 | && ptr[rlen - 1] == '.') | |
690 | { | |
72b21817 RS |
691 | char * buf = (char *) alloca (strlen (ptr) + 1); |
692 | strcpy (buf, ptr); | |
693 | buf[rlen - 1] = ']'; | |
694 | buf[rlen] = '\0'; | |
695 | return directory_file_name (buf, dst); | |
570d7624 JB |
696 | } |
697 | else | |
698 | dst[slen - 1] = ':'; | |
699 | } | |
700 | strcat (dst, "[000000]"); | |
701 | slen += 8; | |
702 | } | |
703 | rptr++; | |
704 | rlen = strlen (rptr) - 1; | |
705 | strncat (dst, rptr, rlen); | |
706 | dst[slen + rlen] = '\0'; | |
707 | strcat (dst, ".DIR.1"); | |
708 | return 1; | |
709 | } | |
710 | #endif /* VMS */ | |
711 | /* Process as Unix format: just remove any final slash. | |
712 | But leave "/" unchanged; do not change it to "". */ | |
713 | strcpy (dst, src); | |
125feee8 RS |
714 | #ifdef APOLLO |
715 | /* Handle // as root for apollo's. */ | |
716 | if ((slen > 2 && dst[slen - 1] == '/') | |
717 | || (slen > 1 && dst[0] != '/' && dst[slen - 1] == '/')) | |
718 | dst[slen - 1] = 0; | |
719 | #else | |
199607e4 | 720 | if (slen > 1 |
5e570b75 | 721 | && IS_DIRECTORY_SEP (dst[slen - 1]) |
4592782e RS |
722 | #ifdef DOS_NT |
723 | && !IS_ANY_SEP (dst[slen - 2]) | |
724 | #endif | |
725 | ) | |
570d7624 | 726 | dst[slen - 1] = 0; |
199607e4 RS |
727 | #endif |
728 | #ifdef DOS_NT | |
729 | CORRECT_DIR_SEPS (dst); | |
125feee8 | 730 | #endif |
570d7624 JB |
731 | return 1; |
732 | } | |
733 | ||
734 | DEFUN ("directory-file-name", Fdirectory_file_name, Sdirectory_file_name, | |
735 | 1, 1, 0, | |
3b7f6e60 EN |
736 | "Returns the file name of the directory named DIRECTORY.\n\ |
737 | This is the name of the file that holds the data for the directory DIRECTORY.\n\ | |
570d7624 JB |
738 | This operation exists because a directory is also a file, but its name as\n\ |
739 | a directory is different from its name as a file.\n\ | |
740 | In Unix-syntax, this function just removes the final slash.\n\ | |
741 | On VMS, given a VMS-syntax directory name such as \"[X.Y]\",\n\ | |
742 | it returns a file name such as \"[X]Y.DIR.1\".") | |
743 | (directory) | |
744 | Lisp_Object directory; | |
745 | { | |
746 | char *buf; | |
0bf2eed2 | 747 | Lisp_Object handler; |
570d7624 JB |
748 | |
749 | CHECK_STRING (directory, 0); | |
750 | ||
265a9e55 | 751 | if (NILP (directory)) |
570d7624 | 752 | return Qnil; |
0bf2eed2 RS |
753 | |
754 | /* If the file name has special constructs in it, | |
755 | call the corresponding file handler. */ | |
49307295 | 756 | handler = Ffind_file_name_handler (directory, Qdirectory_file_name); |
0bf2eed2 RS |
757 | if (!NILP (handler)) |
758 | return call2 (handler, Qdirectory_file_name, directory); | |
759 | ||
570d7624 JB |
760 | #ifdef VMS |
761 | /* 20 extra chars is insufficient for VMS, since we might perform a | |
762 | logical name translation. an equivalence string can be up to 255 | |
763 | chars long, so grab that much extra space... - sss */ | |
764 | buf = (char *) alloca (XSTRING (directory)->size + 20 + 255); | |
765 | #else | |
766 | buf = (char *) alloca (XSTRING (directory)->size + 20); | |
767 | #endif | |
768 | directory_file_name (XSTRING (directory)->data, buf); | |
769 | return build_string (buf); | |
770 | } | |
771 | ||
772 | DEFUN ("make-temp-name", Fmake_temp_name, Smake_temp_name, 1, 1, 0, | |
773 | "Generate temporary file name (string) starting with PREFIX (a string).\n\ | |
774 | The Emacs process number forms part of the result,\n\ | |
41886f35 RS |
775 | so there is no danger of generating a name being used by another process.\n\ |
776 | In addition, this function makes an attempt to choose a name\n\ | |
777 | which has no existing file.") | |
570d7624 JB |
778 | (prefix) |
779 | Lisp_Object prefix; | |
780 | { | |
781 | Lisp_Object val; | |
3a3bfb18 | 782 | #ifdef MSDOS |
ce6212a5 | 783 | /* Don't use too many characters of the restricted 8+3 DOS |
3a3bfb18 | 784 | filename space. */ |
ce6212a5 | 785 | val = concat2 (prefix, build_string ("a.XXX")); |
3a3bfb18 | 786 | #else |
570d7624 | 787 | val = concat2 (prefix, build_string ("XXXXXX")); |
3a3bfb18 | 788 | #endif |
570d7624 | 789 | mktemp (XSTRING (val)->data); |
199607e4 RS |
790 | #ifdef DOS_NT |
791 | CORRECT_DIR_SEPS (XSTRING (val)->data); | |
792 | #endif | |
570d7624 JB |
793 | return val; |
794 | } | |
795 | \f | |
796 | DEFUN ("expand-file-name", Fexpand_file_name, Sexpand_file_name, 1, 2, 0, | |
3b7f6e60 EN |
797 | "Convert filename NAME to absolute, and canonicalize it.\n\ |
798 | Second arg DEFAULT-DIRECTORY is directory to start with if NAME is relative\n\ | |
799 | (does not start with slash); if DEFAULT-DIRECTORY is nil or missing,\n\ | |
570d7624 | 800 | the current buffer's value of default-directory is used.\n\ |
199607e4 RS |
801 | File name components that are `.' are removed, and \n\ |
802 | so are file name components followed by `..', along with the `..' itself;\n\ | |
b72dea2a | 803 | note that these simplifications are done without checking the resulting\n\ |
199607e4 | 804 | file names in the file system.\n\ |
b72dea2a JB |
805 | An initial `~/' expands to your home directory.\n\ |
806 | An initial `~USER/' expands to USER's home directory.\n\ | |
570d7624 | 807 | See also the function `substitute-in-file-name'.") |
82330e7f | 808 | (name, default_directory) |
3b7f6e60 | 809 | Lisp_Object name, default_directory; |
570d7624 JB |
810 | { |
811 | unsigned char *nm; | |
199607e4 | 812 | |
570d7624 JB |
813 | register unsigned char *newdir, *p, *o; |
814 | int tlen; | |
815 | unsigned char *target; | |
816 | struct passwd *pw; | |
570d7624 JB |
817 | #ifdef VMS |
818 | unsigned char * colon = 0; | |
819 | unsigned char * close = 0; | |
820 | unsigned char * slash = 0; | |
821 | unsigned char * brack = 0; | |
822 | int lbrack = 0, rbrack = 0; | |
823 | int dots = 0; | |
824 | #endif /* VMS */ | |
5e570b75 | 825 | #ifdef DOS_NT |
199607e4 | 826 | int drive = 0; |
9a1dc3be | 827 | int collapse_newdir = 1; |
5e570b75 | 828 | #endif /* DOS_NT */ |
199607e4 | 829 | int length; |
0bf2eed2 | 830 | Lisp_Object handler; |
199607e4 | 831 | |
570d7624 JB |
832 | CHECK_STRING (name, 0); |
833 | ||
0bf2eed2 RS |
834 | /* If the file name has special constructs in it, |
835 | call the corresponding file handler. */ | |
49307295 | 836 | handler = Ffind_file_name_handler (name, Qexpand_file_name); |
0bf2eed2 | 837 | if (!NILP (handler)) |
3b7f6e60 | 838 | return call3 (handler, Qexpand_file_name, name, default_directory); |
58fc9587 | 839 | |
3b7f6e60 EN |
840 | /* Use the buffer's default-directory if DEFAULT_DIRECTORY is omitted. */ |
841 | if (NILP (default_directory)) | |
842 | default_directory = current_buffer->directory; | |
82330e7f RS |
843 | if (! STRINGP (default_directory)) |
844 | default_directory = build_string ("/"); | |
58fc9587 | 845 | |
3b7f6e60 | 846 | if (!NILP (default_directory)) |
273e0829 | 847 | { |
3b7f6e60 | 848 | handler = Ffind_file_name_handler (default_directory, Qexpand_file_name); |
273e0829 | 849 | if (!NILP (handler)) |
3b7f6e60 | 850 | return call3 (handler, Qexpand_file_name, name, default_directory); |
273e0829 | 851 | } |
0bf2eed2 | 852 | |
3b7f6e60 | 853 | o = XSTRING (default_directory)->data; |
5e570b75 | 854 | |
3b7f6e60 | 855 | /* Make sure DEFAULT_DIRECTORY is properly expanded. |
f14b1c68 | 856 | It would be better to do this down below where we actually use |
3b7f6e60 | 857 | default_directory. Unfortunately, calling Fexpand_file_name recursively |
f14b1c68 JB |
858 | could invoke GC, and the strings might be relocated. This would |
859 | be annoying because we have pointers into strings lying around | |
860 | that would need adjusting, and people would add new pointers to | |
861 | the code and forget to adjust them, resulting in intermittent bugs. | |
4ad827c5 RS |
862 | Putting this call here avoids all that crud. |
863 | ||
864 | The EQ test avoids infinite recursion. */ | |
3b7f6e60 | 865 | if (! NILP (default_directory) && !EQ (default_directory, name) |
199607e4 RS |
866 | /* Save time in some common cases - as long as default_directory |
867 | is not relative, it can be canonicalized with name below (if it | |
868 | is needed at all) without requiring it to be expanded now. */ | |
01937013 | 869 | #ifdef DOS_NT |
199607e4 RS |
870 | /* Detect MSDOS file names with drive specifiers. */ |
871 | && ! (IS_DRIVE (o[0]) && (IS_DEVICE_SEP (o[1]) && IS_DIRECTORY_SEP (o[2]))) | |
872 | #ifdef WINDOWSNT | |
873 | /* Detect Windows file names in UNC format. */ | |
874 | && ! (IS_DIRECTORY_SEP (o[0]) && IS_DIRECTORY_SEP (o[1])) | |
01937013 | 875 | #endif |
199607e4 RS |
876 | #else /* not DOS_NT */ |
877 | /* Detect Unix absolute file names (/... alone is not absolute on | |
878 | DOS or Windows). */ | |
879 | && ! (IS_DIRECTORY_SEP (o[0])) | |
880 | #endif /* not DOS_NT */ | |
881 | ) | |
f14b1c68 JB |
882 | { |
883 | struct gcpro gcpro1; | |
884 | ||
885 | GCPRO1 (name); | |
3b7f6e60 | 886 | default_directory = Fexpand_file_name (default_directory, Qnil); |
f14b1c68 JB |
887 | UNGCPRO; |
888 | } | |
889 | ||
570d7624 JB |
890 | #ifdef VMS |
891 | /* Filenames on VMS are always upper case. */ | |
892 | name = Fupcase (name); | |
893 | #endif | |
4c3c22f3 RS |
894 | #ifdef FILE_SYSTEM_CASE |
895 | name = FILE_SYSTEM_CASE (name); | |
896 | #endif | |
570d7624 JB |
897 | |
898 | nm = XSTRING (name)->data; | |
a5a1cc06 | 899 | |
5e570b75 | 900 | #ifdef DOS_NT |
199607e4 RS |
901 | /* We will force directory separators to be either all \ or /, so make |
902 | a local copy to modify, even if there ends up being no change. */ | |
903 | nm = strcpy (alloca (strlen (nm) + 1), nm); | |
904 | ||
905 | /* Find and remove drive specifier if present; this makes nm absolute | |
906 | even if the rest of the name appears to be relative. */ | |
4c3c22f3 RS |
907 | { |
908 | unsigned char *colon = rindex (nm, ':'); | |
199607e4 | 909 | |
4c3c22f3 | 910 | if (colon) |
199607e4 RS |
911 | /* Only recognize colon as part of drive specifier if there is a |
912 | single alphabetic character preceeding the colon (and if the | |
913 | character before the drive letter, if present, is a directory | |
914 | separator); this is to support the remote system syntax used by | |
915 | ange-ftp, and the "po:username" syntax for POP mailboxes. */ | |
916 | look_again: | |
4c3c22f3 RS |
917 | if (nm == colon) |
918 | nm++; | |
199607e4 RS |
919 | else if (IS_DRIVE (colon[-1]) |
920 | && (colon == nm + 1 || IS_DIRECTORY_SEP (colon[-2]))) | |
4c3c22f3 | 921 | { |
3c455a3b | 922 | drive = colon[-1]; |
4c3c22f3 | 923 | nm = colon + 1; |
199607e4 RS |
924 | } |
925 | else | |
926 | { | |
927 | while (--colon >= nm) | |
928 | if (colon[0] == ':') | |
929 | goto look_again; | |
930 | } | |
4c3c22f3 | 931 | } |
bb1ff1f4 GV |
932 | |
933 | #ifdef WINDOWSNT | |
934 | /* If we see "c://somedir", we want to strip the first slash after the | |
935 | colon when stripping the drive letter. Otherwise, this expands to | |
936 | "//somedir". */ | |
937 | if (drive && IS_DIRECTORY_SEP (nm[0]) && IS_DIRECTORY_SEP (nm[1])) | |
938 | nm++; | |
939 | #endif /* WINDOWSNT */ | |
5e570b75 | 940 | #endif /* DOS_NT */ |
4c3c22f3 | 941 | |
199607e4 RS |
942 | #ifdef WINDOWSNT |
943 | /* Discard any previous drive specifier if nm is now in UNC format. */ | |
944 | if (IS_DIRECTORY_SEP (nm[0]) && IS_DIRECTORY_SEP (nm[1])) | |
945 | { | |
946 | drive = 0; | |
947 | } | |
948 | #endif | |
949 | ||
950 | /* If nm is absolute, look for /./ or /../ sequences; if none are | |
951 | found, we can probably return right away. We will avoid allocating | |
952 | a new string if name is already fully expanded. */ | |
570d7624 | 953 | if ( |
5e570b75 | 954 | IS_DIRECTORY_SEP (nm[0]) |
199607e4 RS |
955 | #ifdef MSDOS |
956 | && drive | |
957 | #endif | |
958 | #ifdef WINDOWSNT | |
959 | && (drive || IS_DIRECTORY_SEP (nm[1])) | |
960 | #endif | |
570d7624 JB |
961 | #ifdef VMS |
962 | || index (nm, ':') | |
963 | #endif /* VMS */ | |
964 | ) | |
965 | { | |
f14b1c68 JB |
966 | /* If it turns out that the filename we want to return is just a |
967 | suffix of FILENAME, we don't need to go through and edit | |
968 | things; we just need to construct a new string using data | |
969 | starting at the middle of FILENAME. If we set lose to a | |
970 | non-zero value, that means we've discovered that we can't do | |
971 | that cool trick. */ | |
972 | int lose = 0; | |
973 | ||
570d7624 | 974 | p = nm; |
570d7624 JB |
975 | while (*p) |
976 | { | |
199607e4 | 977 | /* Since we know the name is absolute, we can assume that each |
c77d647e JB |
978 | element starts with a "/". */ |
979 | ||
c77d647e | 980 | /* "." and ".." are hairy. */ |
5e570b75 | 981 | if (IS_DIRECTORY_SEP (p[0]) |
c77d647e | 982 | && p[1] == '.' |
5e570b75 | 983 | && (IS_DIRECTORY_SEP (p[2]) |
c77d647e | 984 | || p[2] == 0 |
5e570b75 | 985 | || (p[2] == '.' && (IS_DIRECTORY_SEP (p[3]) |
c77d647e | 986 | || p[3] == 0)))) |
570d7624 JB |
987 | lose = 1; |
988 | #ifdef VMS | |
989 | if (p[0] == '\\') | |
990 | lose = 1; | |
991 | if (p[0] == '/') { | |
992 | /* if dev:[dir]/, move nm to / */ | |
993 | if (!slash && p > nm && (brack || colon)) { | |
994 | nm = (brack ? brack + 1 : colon + 1); | |
995 | lbrack = rbrack = 0; | |
996 | brack = 0; | |
997 | colon = 0; | |
998 | } | |
999 | slash = p; | |
1000 | } | |
1001 | if (p[0] == '-') | |
1002 | #ifndef VMS4_4 | |
1003 | /* VMS pre V4.4,convert '-'s in filenames. */ | |
1004 | if (lbrack == rbrack) | |
1005 | { | |
5e570b75 | 1006 | if (dots < 2) /* this is to allow negative version numbers */ |
570d7624 JB |
1007 | p[0] = '_'; |
1008 | } | |
1009 | else | |
1010 | #endif /* VMS4_4 */ | |
1011 | if (lbrack > rbrack && | |
1012 | ((p[-1] == '.' || p[-1] == '[' || p[-1] == '<') && | |
1013 | (p[1] == '.' || p[1] == ']' || p[1] == '>'))) | |
1014 | lose = 1; | |
1015 | #ifndef VMS4_4 | |
1016 | else | |
1017 | p[0] = '_'; | |
1018 | #endif /* VMS4_4 */ | |
1019 | /* count open brackets, reset close bracket pointer */ | |
1020 | if (p[0] == '[' || p[0] == '<') | |
1021 | lbrack++, brack = 0; | |
1022 | /* count close brackets, set close bracket pointer */ | |
1023 | if (p[0] == ']' || p[0] == '>') | |
1024 | rbrack++, brack = p; | |
1025 | /* detect ][ or >< */ | |
1026 | if ((p[0] == ']' || p[0] == '>') && (p[1] == '[' || p[1] == '<')) | |
1027 | lose = 1; | |
1028 | if ((p[0] == ':' || p[0] == ']' || p[0] == '>') && p[1] == '~') | |
1029 | nm = p + 1, lose = 1; | |
1030 | if (p[0] == ':' && (colon || slash)) | |
1031 | /* if dev1:[dir]dev2:, move nm to dev2: */ | |
1032 | if (brack) | |
1033 | { | |
1034 | nm = brack + 1; | |
1035 | brack = 0; | |
1036 | } | |
199607e4 | 1037 | /* if /name/dev:, move nm to dev: */ |
570d7624 JB |
1038 | else if (slash) |
1039 | nm = slash + 1; | |
1040 | /* if node::dev:, move colon following dev */ | |
1041 | else if (colon && colon[-1] == ':') | |
1042 | colon = p; | |
1043 | /* if dev1:dev2:, move nm to dev2: */ | |
1044 | else if (colon && colon[-1] != ':') | |
1045 | { | |
1046 | nm = colon + 1; | |
1047 | colon = 0; | |
1048 | } | |
1049 | if (p[0] == ':' && !colon) | |
1050 | { | |
1051 | if (p[1] == ':') | |
1052 | p++; | |
1053 | colon = p; | |
1054 | } | |
1055 | if (lbrack == rbrack) | |
1056 | if (p[0] == ';') | |
1057 | dots = 2; | |
1058 | else if (p[0] == '.') | |
1059 | dots++; | |
1060 | #endif /* VMS */ | |
1061 | p++; | |
1062 | } | |
1063 | if (!lose) | |
1064 | { | |
1065 | #ifdef VMS | |
1066 | if (index (nm, '/')) | |
1067 | return build_string (sys_translate_unix (nm)); | |
1068 | #endif /* VMS */ | |
199607e4 RS |
1069 | #ifdef DOS_NT |
1070 | /* Make sure directories are all separated with / or \ as | |
1071 | desired, but avoid allocation of a new string when not | |
1072 | required. */ | |
1073 | CORRECT_DIR_SEPS (nm); | |
1074 | #ifdef WINDOWSNT | |
1075 | if (IS_DIRECTORY_SEP (nm[1])) | |
1076 | { | |
1077 | if (strcmp (nm, XSTRING (name)->data) != 0) | |
1078 | name = build_string (nm); | |
1079 | } | |
1080 | else | |
1081 | #endif | |
1082 | /* drive must be set, so this is okay */ | |
1083 | if (strcmp (nm - 2, XSTRING (name)->data) != 0) | |
1084 | { | |
1085 | name = make_string (nm - 2, p - nm + 2); | |
f94988a7 | 1086 | XSTRING (name)->data[0] = DRIVE_LETTER (drive); |
199607e4 RS |
1087 | XSTRING (name)->data[1] = ':'; |
1088 | } | |
1089 | return name; | |
1090 | #else /* not DOS_NT */ | |
570d7624 JB |
1091 | if (nm == XSTRING (name)->data) |
1092 | return name; | |
1093 | return build_string (nm); | |
5e570b75 | 1094 | #endif /* not DOS_NT */ |
570d7624 JB |
1095 | } |
1096 | } | |
1097 | ||
199607e4 RS |
1098 | /* At this point, nm might or might not be an absolute file name. We |
1099 | need to expand ~ or ~user if present, otherwise prefix nm with | |
1100 | default_directory if nm is not absolute, and finally collapse /./ | |
1101 | and /foo/../ sequences. | |
1102 | ||
1103 | We set newdir to be the appropriate prefix if one is needed: | |
1104 | - the relevant user directory if nm starts with ~ or ~user | |
1105 | - the specified drive's working dir (DOS/NT only) if nm does not | |
1106 | start with / | |
1107 | - the value of default_directory. | |
1108 | ||
1109 | Note that these prefixes are not guaranteed to be absolute (except | |
1110 | for the working dir of a drive). Therefore, to ensure we always | |
1111 | return an absolute name, if the final prefix is not absolute we | |
1112 | append it to the current working directory. */ | |
570d7624 JB |
1113 | |
1114 | newdir = 0; | |
1115 | ||
1116 | if (nm[0] == '~') /* prefix ~ */ | |
c77d647e | 1117 | { |
5e570b75 | 1118 | if (IS_DIRECTORY_SEP (nm[1]) |
570d7624 | 1119 | #ifdef VMS |
c77d647e | 1120 | || nm[1] == ':' |
5e570b75 | 1121 | #endif /* VMS */ |
c77d647e JB |
1122 | || nm[1] == 0) /* ~ by itself */ |
1123 | { | |
1124 | if (!(newdir = (unsigned char *) egetenv ("HOME"))) | |
1125 | newdir = (unsigned char *) ""; | |
199607e4 | 1126 | nm++; |
5e570b75 | 1127 | #ifdef DOS_NT |
9a1dc3be | 1128 | collapse_newdir = 0; |
4c3c22f3 | 1129 | #endif |
570d7624 | 1130 | #ifdef VMS |
c77d647e | 1131 | nm++; /* Don't leave the slash in nm. */ |
5e570b75 | 1132 | #endif /* VMS */ |
c77d647e JB |
1133 | } |
1134 | else /* ~user/filename */ | |
1135 | { | |
5e570b75 | 1136 | for (p = nm; *p && (!IS_DIRECTORY_SEP (*p) |
570d7624 | 1137 | #ifdef VMS |
c77d647e | 1138 | && *p != ':' |
5e570b75 | 1139 | #endif /* VMS */ |
c77d647e JB |
1140 | ); p++); |
1141 | o = (unsigned char *) alloca (p - nm + 1); | |
1142 | bcopy ((char *) nm, o, p - nm); | |
1143 | o [p - nm] = 0; | |
1144 | ||
1145 | pw = (struct passwd *) getpwnam (o + 1); | |
1146 | if (pw) | |
1147 | { | |
1148 | newdir = (unsigned char *) pw -> pw_dir; | |
570d7624 | 1149 | #ifdef VMS |
c77d647e | 1150 | nm = p + 1; /* skip the terminator */ |
570d7624 | 1151 | #else |
c77d647e | 1152 | nm = p; |
199607e4 | 1153 | #ifdef DOS_NT |
9a1dc3be | 1154 | collapse_newdir = 0; |
199607e4 | 1155 | #endif |
5e570b75 | 1156 | #endif /* VMS */ |
c77d647e | 1157 | } |
e5d77022 | 1158 | |
c77d647e JB |
1159 | /* If we don't find a user of that name, leave the name |
1160 | unchanged; don't move nm forward to p. */ | |
1161 | } | |
1162 | } | |
570d7624 | 1163 | |
5e570b75 | 1164 | #ifdef DOS_NT |
199607e4 RS |
1165 | /* On DOS and Windows, nm is absolute if a drive name was specified; |
1166 | use the drive's current directory as the prefix if needed. */ | |
1167 | if (!newdir && drive) | |
1168 | { | |
1169 | /* Get default directory if needed to make nm absolute. */ | |
1170 | if (!IS_DIRECTORY_SEP (nm[0])) | |
1171 | { | |
1172 | newdir = alloca (MAXPATHLEN + 1); | |
1173 | if (!getdefdir (toupper (drive) - 'A' + 1, newdir)) | |
1174 | newdir = NULL; | |
1175 | } | |
1176 | if (!newdir) | |
1177 | { | |
1178 | /* Either nm starts with /, or drive isn't mounted. */ | |
1179 | newdir = alloca (4); | |
f94988a7 | 1180 | newdir[0] = DRIVE_LETTER (drive); |
199607e4 RS |
1181 | newdir[1] = ':'; |
1182 | newdir[2] = '/'; | |
1183 | newdir[3] = 0; | |
1184 | } | |
1185 | } | |
5e570b75 | 1186 | #endif /* DOS_NT */ |
199607e4 RS |
1187 | |
1188 | /* Finally, if no prefix has been specified and nm is not absolute, | |
1189 | then it must be expanded relative to default_directory. */ | |
1190 | ||
34097368 | 1191 | if (1 |
199607e4 RS |
1192 | #ifndef DOS_NT |
1193 | /* /... alone is not absolute on DOS and Windows. */ | |
34097368 | 1194 | && !IS_DIRECTORY_SEP (nm[0]) |
199607e4 RS |
1195 | #endif |
1196 | #ifdef WINDOWSNT | |
34097368 | 1197 | && !(IS_DIRECTORY_SEP (nm[0]) && IS_DIRECTORY_SEP (nm[1])) |
199607e4 RS |
1198 | #endif |
1199 | #ifdef VMS | |
1200 | && !index (nm, ':') | |
1201 | #endif | |
570d7624 JB |
1202 | && !newdir) |
1203 | { | |
3b7f6e60 | 1204 | newdir = XSTRING (default_directory)->data; |
570d7624 JB |
1205 | } |
1206 | ||
5e570b75 | 1207 | #ifdef DOS_NT |
199607e4 RS |
1208 | if (newdir) |
1209 | { | |
1210 | /* First ensure newdir is an absolute name. */ | |
1211 | if ( | |
1212 | /* Detect MSDOS file names with drive specifiers. */ | |
1213 | ! (IS_DRIVE (newdir[0]) | |
1214 | && IS_DEVICE_SEP (newdir[1]) && IS_DIRECTORY_SEP (newdir[2])) | |
1215 | #ifdef WINDOWSNT | |
1216 | /* Detect Windows file names in UNC format. */ | |
1217 | && ! (IS_DIRECTORY_SEP (newdir[0]) && IS_DIRECTORY_SEP (newdir[1])) | |
1218 | #endif | |
1219 | ) | |
1220 | { | |
1221 | /* Effectively, let newdir be (expand-file-name newdir cwd). | |
1222 | Because of the admonition against calling expand-file-name | |
1223 | when we have pointers into lisp strings, we accomplish this | |
1224 | indirectly by prepending newdir to nm if necessary, and using | |
1225 | cwd (or the wd of newdir's drive) as the new newdir. */ | |
1226 | ||
1227 | if (IS_DRIVE (newdir[0]) && newdir[1] == ':') | |
1228 | { | |
1229 | drive = newdir[0]; | |
1230 | newdir += 2; | |
1231 | } | |
1232 | if (!IS_DIRECTORY_SEP (nm[0])) | |
1233 | { | |
1234 | char * tmp = alloca (strlen (newdir) + strlen (nm) + 2); | |
1235 | file_name_as_directory (tmp, newdir); | |
1236 | strcat (tmp, nm); | |
1237 | nm = tmp; | |
1238 | } | |
1239 | newdir = alloca (MAXPATHLEN + 1); | |
1240 | if (drive) | |
1241 | { | |
1242 | if (!getdefdir (toupper (drive) - 'A' + 1, newdir)) | |
1243 | newdir = "/"; | |
1244 | } | |
1245 | else | |
1246 | getwd (newdir); | |
1247 | } | |
1248 | ||
1249 | /* Strip off drive name from prefix, if present. */ | |
1250 | if (IS_DRIVE (newdir[0]) && newdir[1] == ':') | |
1251 | { | |
1252 | drive = newdir[0]; | |
1253 | newdir += 2; | |
1254 | } | |
1255 | ||
1256 | /* Keep only a prefix from newdir if nm starts with slash | |
82330e7f | 1257 | (//server/share for UNC, nothing otherwise). */ |
9a1dc3be | 1258 | if (IS_DIRECTORY_SEP (nm[0]) && collapse_newdir) |
199607e4 RS |
1259 | { |
1260 | #ifdef WINDOWSNT | |
1261 | if (IS_DIRECTORY_SEP (newdir[0]) && IS_DIRECTORY_SEP (newdir[1])) | |
1262 | { | |
1263 | newdir = strcpy (alloca (strlen (newdir) + 1), newdir); | |
1264 | p = newdir + 2; | |
1265 | while (*p && !IS_DIRECTORY_SEP (*p)) p++; | |
1266 | p++; | |
1267 | while (*p && !IS_DIRECTORY_SEP (*p)) p++; | |
1268 | *p = 0; | |
1269 | } | |
1270 | else | |
1271 | #endif | |
1272 | newdir = ""; | |
1273 | } | |
1274 | } | |
5e570b75 | 1275 | #endif /* DOS_NT */ |
199607e4 RS |
1276 | |
1277 | if (newdir) | |
bfb61299 | 1278 | { |
57676091 | 1279 | /* Get rid of any slash at the end of newdir, unless newdir is |
82330e7f | 1280 | just // (an incomplete UNC name). */ |
199607e4 | 1281 | length = strlen (newdir); |
15fc2f8c | 1282 | if (length > 0 && IS_DIRECTORY_SEP (newdir[length - 1]) |
57676091 RS |
1283 | #ifdef WINDOWSNT |
1284 | && !(length == 2 && IS_DIRECTORY_SEP (newdir[0])) | |
1285 | #endif | |
1286 | ) | |
bfb61299 JB |
1287 | { |
1288 | unsigned char *temp = (unsigned char *) alloca (length); | |
1289 | bcopy (newdir, temp, length - 1); | |
1290 | temp[length - 1] = 0; | |
1291 | newdir = temp; | |
1292 | } | |
1293 | tlen = length + 1; | |
1294 | } | |
1295 | else | |
1296 | tlen = 0; | |
570d7624 | 1297 | |
bfb61299 JB |
1298 | /* Now concatenate the directory and name to new space in the stack frame */ |
1299 | tlen += strlen (nm) + 1; | |
5e570b75 | 1300 | #ifdef DOS_NT |
199607e4 | 1301 | /* Add reserved space for drive name. (The Microsoft x86 compiler |
5e570b75 RS |
1302 | produces incorrect code if the following two lines are combined.) */ |
1303 | target = (unsigned char *) alloca (tlen + 2); | |
1304 | target += 2; | |
1305 | #else /* not DOS_NT */ | |
570d7624 | 1306 | target = (unsigned char *) alloca (tlen); |
5e570b75 | 1307 | #endif /* not DOS_NT */ |
570d7624 JB |
1308 | *target = 0; |
1309 | ||
1310 | if (newdir) | |
1311 | { | |
1312 | #ifndef VMS | |
5e570b75 | 1313 | if (nm[0] == 0 || IS_DIRECTORY_SEP (nm[0])) |
570d7624 JB |
1314 | strcpy (target, newdir); |
1315 | else | |
1316 | #endif | |
c77d647e | 1317 | file_name_as_directory (target, newdir); |
570d7624 JB |
1318 | } |
1319 | ||
1320 | strcat (target, nm); | |
1321 | #ifdef VMS | |
1322 | if (index (target, '/')) | |
1323 | strcpy (target, sys_translate_unix (target)); | |
1324 | #endif /* VMS */ | |
1325 | ||
199607e4 RS |
1326 | /* ASSERT (IS_DIRECTORY_SEP (target[0])) if not VMS */ |
1327 | ||
c77d647e | 1328 | /* Now canonicalize by removing /. and /foo/.. if they appear. */ |
570d7624 JB |
1329 | |
1330 | p = target; | |
1331 | o = target; | |
1332 | ||
1333 | while (*p) | |
1334 | { | |
1335 | #ifdef VMS | |
1336 | if (*p != ']' && *p != '>' && *p != '-') | |
1337 | { | |
1338 | if (*p == '\\') | |
1339 | p++; | |
1340 | *o++ = *p++; | |
1341 | } | |
1342 | else if ((p[0] == ']' || p[0] == '>') && p[0] == p[1] + 2) | |
1343 | /* brackets are offset from each other by 2 */ | |
1344 | { | |
1345 | p += 2; | |
1346 | if (*p != '.' && *p != '-' && o[-1] != '.') | |
1347 | /* convert [foo][bar] to [bar] */ | |
1348 | while (o[-1] != '[' && o[-1] != '<') | |
1349 | o--; | |
1350 | else if (*p == '-' && *o != '.') | |
1351 | *--p = '.'; | |
1352 | } | |
1353 | else if (p[0] == '-' && o[-1] == '.' && | |
1354 | (p[1] == '.' || p[1] == ']' || p[1] == '>')) | |
1355 | /* flush .foo.- ; leave - if stopped by '[' or '<' */ | |
1356 | { | |
1357 | do | |
1358 | o--; | |
1359 | while (o[-1] != '.' && o[-1] != '[' && o[-1] != '<'); | |
5e570b75 | 1360 | if (p[1] == '.') /* foo.-.bar ==> bar. */ |
570d7624 JB |
1361 | p += 2; |
1362 | else if (o[-1] == '.') /* '.foo.-]' ==> ']' */ | |
1363 | p++, o--; | |
1364 | /* else [foo.-] ==> [-] */ | |
1365 | } | |
1366 | else | |
1367 | { | |
1368 | #ifndef VMS4_4 | |
1369 | if (*p == '-' && | |
1370 | o[-1] != '[' && o[-1] != '<' && o[-1] != '.' && | |
1371 | p[1] != ']' && p[1] != '>' && p[1] != '.') | |
1372 | *p = '_'; | |
1373 | #endif /* VMS4_4 */ | |
1374 | *o++ = *p++; | |
1375 | } | |
1376 | #else /* not VMS */ | |
5e570b75 RS |
1377 | if (!IS_DIRECTORY_SEP (*p)) |
1378 | { | |
570d7624 JB |
1379 | *o++ = *p++; |
1380 | } | |
5e570b75 | 1381 | else if (IS_DIRECTORY_SEP (p[0]) |
c77d647e | 1382 | && p[1] == '.' |
5e570b75 | 1383 | && (IS_DIRECTORY_SEP (p[2]) |
c77d647e JB |
1384 | || p[2] == 0)) |
1385 | { | |
1386 | /* If "/." is the entire filename, keep the "/". Otherwise, | |
1387 | just delete the whole "/.". */ | |
1388 | if (o == target && p[2] == '\0') | |
1389 | *o++ = *p; | |
1390 | p += 2; | |
1391 | } | |
c0fa5a0b | 1392 | else if (IS_DIRECTORY_SEP (p[0]) && p[1] == '.' && p[2] == '.' |
570d7624 JB |
1393 | /* `/../' is the "superroot" on certain file systems. */ |
1394 | && o != target | |
5e570b75 | 1395 | && (IS_DIRECTORY_SEP (p[3]) || p[3] == 0)) |
570d7624 | 1396 | { |
5e570b75 | 1397 | while (o != target && (--o) && !IS_DIRECTORY_SEP (*o)) |
570d7624 | 1398 | ; |
795de720 RS |
1399 | /* Keep initial / only if this is the whole name. */ |
1400 | if (o == target && IS_ANY_SEP (*o) && p[3] == 0) | |
51b1d12e | 1401 | ++o; |
570d7624 JB |
1402 | p += 3; |
1403 | } | |
1404 | else | |
5e570b75 | 1405 | { |
570d7624 JB |
1406 | *o++ = *p++; |
1407 | } | |
1408 | #endif /* not VMS */ | |
1409 | } | |
1410 | ||
5e570b75 | 1411 | #ifdef DOS_NT |
199607e4 | 1412 | /* At last, set drive name. */ |
5e570b75 | 1413 | #ifdef WINDOWSNT |
199607e4 RS |
1414 | /* Except for network file name. */ |
1415 | if (!(IS_DIRECTORY_SEP (target[0]) && IS_DIRECTORY_SEP (target[1]))) | |
5e570b75 | 1416 | #endif /* WINDOWSNT */ |
4c3c22f3 | 1417 | { |
199607e4 | 1418 | if (!drive) abort (); |
4c3c22f3 | 1419 | target -= 2; |
f94988a7 | 1420 | target[0] = DRIVE_LETTER (drive); |
4c3c22f3 RS |
1421 | target[1] = ':'; |
1422 | } | |
199607e4 | 1423 | CORRECT_DIR_SEPS (target); |
5e570b75 | 1424 | #endif /* DOS_NT */ |
4c3c22f3 | 1425 | |
570d7624 JB |
1426 | return make_string (target, o - target); |
1427 | } | |
5e570b75 | 1428 | |
570d7624 | 1429 | #if 0 |
5e570b75 | 1430 | /* Changed this DEFUN to a DEAFUN, so as not to confuse `make-docfile'. */ |
e5d77022 | 1431 | DEAFUN ("expand-file-name", Fexpand_file_name, Sexpand_file_name, 1, 2, 0, |
570d7624 JB |
1432 | "Convert FILENAME to absolute, and canonicalize it.\n\ |
1433 | Second arg DEFAULT is directory to start with if FILENAME is relative\n\ | |
1434 | (does not start with slash); if DEFAULT is nil or missing,\n\ | |
1435 | the current buffer's value of default-directory is used.\n\ | |
1436 | Filenames containing `.' or `..' as components are simplified;\n\ | |
1437 | initial `~/' expands to your home directory.\n\ | |
1438 | See also the function `substitute-in-file-name'.") | |
1439 | (name, defalt) | |
1440 | Lisp_Object name, defalt; | |
1441 | { | |
1442 | unsigned char *nm; | |
199607e4 | 1443 | |
570d7624 JB |
1444 | register unsigned char *newdir, *p, *o; |
1445 | int tlen; | |
1446 | unsigned char *target; | |
1447 | struct passwd *pw; | |
1448 | int lose; | |
1449 | #ifdef VMS | |
1450 | unsigned char * colon = 0; | |
1451 | unsigned char * close = 0; | |
1452 | unsigned char * slash = 0; | |
1453 | unsigned char * brack = 0; | |
1454 | int lbrack = 0, rbrack = 0; | |
1455 | int dots = 0; | |
1456 | #endif /* VMS */ | |
199607e4 | 1457 | |
570d7624 JB |
1458 | CHECK_STRING (name, 0); |
1459 | ||
1460 | #ifdef VMS | |
1461 | /* Filenames on VMS are always upper case. */ | |
1462 | name = Fupcase (name); | |
1463 | #endif | |
1464 | ||
1465 | nm = XSTRING (name)->data; | |
199607e4 | 1466 | |
570d7624 | 1467 | /* If nm is absolute, flush ...// and detect /./ and /../. |
82330e7f | 1468 | If no /./ or /../ we can return right away. */ |
570d7624 JB |
1469 | if ( |
1470 | nm[0] == '/' | |
1471 | #ifdef VMS | |
1472 | || index (nm, ':') | |
1473 | #endif /* VMS */ | |
1474 | ) | |
1475 | { | |
1476 | p = nm; | |
1477 | lose = 0; | |
1478 | while (*p) | |
1479 | { | |
1480 | if (p[0] == '/' && p[1] == '/' | |
1481 | #ifdef APOLLO | |
82330e7f | 1482 | /* // at start of filename is meaningful on Apollo system. */ |
570d7624 JB |
1483 | && nm != p |
1484 | #endif /* APOLLO */ | |
1485 | ) | |
1486 | nm = p + 1; | |
1487 | if (p[0] == '/' && p[1] == '~') | |
1488 | nm = p + 1, lose = 1; | |
1489 | if (p[0] == '/' && p[1] == '.' | |
1490 | && (p[2] == '/' || p[2] == 0 | |
1491 | || (p[2] == '.' && (p[3] == '/' || p[3] == 0)))) | |
1492 | lose = 1; | |
1493 | #ifdef VMS | |
1494 | if (p[0] == '\\') | |
1495 | lose = 1; | |
1496 | if (p[0] == '/') { | |
1497 | /* if dev:[dir]/, move nm to / */ | |
1498 | if (!slash && p > nm && (brack || colon)) { | |
1499 | nm = (brack ? brack + 1 : colon + 1); | |
1500 | lbrack = rbrack = 0; | |
1501 | brack = 0; | |
1502 | colon = 0; | |
1503 | } | |
1504 | slash = p; | |
1505 | } | |
1506 | if (p[0] == '-') | |
1507 | #ifndef VMS4_4 | |
1508 | /* VMS pre V4.4,convert '-'s in filenames. */ | |
1509 | if (lbrack == rbrack) | |
1510 | { | |
5e570b75 | 1511 | if (dots < 2) /* this is to allow negative version numbers */ |
570d7624 JB |
1512 | p[0] = '_'; |
1513 | } | |
1514 | else | |
1515 | #endif /* VMS4_4 */ | |
1516 | if (lbrack > rbrack && | |
1517 | ((p[-1] == '.' || p[-1] == '[' || p[-1] == '<') && | |
1518 | (p[1] == '.' || p[1] == ']' || p[1] == '>'))) | |
1519 | lose = 1; | |
1520 | #ifndef VMS4_4 | |
1521 | else | |
1522 | p[0] = '_'; | |
1523 | #endif /* VMS4_4 */ | |
1524 | /* count open brackets, reset close bracket pointer */ | |
1525 | if (p[0] == '[' || p[0] == '<') | |
1526 | lbrack++, brack = 0; | |
1527 | /* count close brackets, set close bracket pointer */ | |
1528 | if (p[0] == ']' || p[0] == '>') | |
1529 | rbrack++, brack = p; | |
1530 | /* detect ][ or >< */ | |
1531 | if ((p[0] == ']' || p[0] == '>') && (p[1] == '[' || p[1] == '<')) | |
1532 | lose = 1; | |
1533 | if ((p[0] == ':' || p[0] == ']' || p[0] == '>') && p[1] == '~') | |
1534 | nm = p + 1, lose = 1; | |
1535 | if (p[0] == ':' && (colon || slash)) | |
1536 | /* if dev1:[dir]dev2:, move nm to dev2: */ | |
1537 | if (brack) | |
1538 | { | |
1539 | nm = brack + 1; | |
1540 | brack = 0; | |
1541 | } | |
199607e4 | 1542 | /* If /name/dev:, move nm to dev: */ |
570d7624 JB |
1543 | else if (slash) |
1544 | nm = slash + 1; | |
199607e4 | 1545 | /* If node::dev:, move colon following dev */ |
570d7624 JB |
1546 | else if (colon && colon[-1] == ':') |
1547 | colon = p; | |
199607e4 | 1548 | /* If dev1:dev2:, move nm to dev2: */ |
570d7624 JB |
1549 | else if (colon && colon[-1] != ':') |
1550 | { | |
1551 | nm = colon + 1; | |
1552 | colon = 0; | |
1553 | } | |
1554 | if (p[0] == ':' && !colon) | |
1555 | { | |
1556 | if (p[1] == ':') | |
1557 | p++; | |
1558 | colon = p; | |
1559 | } | |
1560 | if (lbrack == rbrack) | |
1561 | if (p[0] == ';') | |
1562 | dots = 2; | |
1563 | else if (p[0] == '.') | |
1564 | dots++; | |
1565 | #endif /* VMS */ | |
1566 | p++; | |
1567 | } | |
1568 | if (!lose) | |
1569 | { | |
1570 | #ifdef VMS | |
1571 | if (index (nm, '/')) | |
1572 | return build_string (sys_translate_unix (nm)); | |
1573 | #endif /* VMS */ | |
1574 | if (nm == XSTRING (name)->data) | |
1575 | return name; | |
1576 | return build_string (nm); | |
1577 | } | |
1578 | } | |
1579 | ||
1580 | /* Now determine directory to start with and put it in NEWDIR */ | |
1581 | ||
1582 | newdir = 0; | |
1583 | ||
5e570b75 | 1584 | if (nm[0] == '~') /* prefix ~ */ |
570d7624 JB |
1585 | if (nm[1] == '/' |
1586 | #ifdef VMS | |
1587 | || nm[1] == ':' | |
1588 | #endif /* VMS */ | |
1589 | || nm[1] == 0)/* ~/filename */ | |
1590 | { | |
1591 | if (!(newdir = (unsigned char *) egetenv ("HOME"))) | |
1592 | newdir = (unsigned char *) ""; | |
1593 | nm++; | |
1594 | #ifdef VMS | |
5e570b75 | 1595 | nm++; /* Don't leave the slash in nm. */ |
570d7624 JB |
1596 | #endif /* VMS */ |
1597 | } | |
1598 | else /* ~user/filename */ | |
1599 | { | |
1600 | /* Get past ~ to user */ | |
1601 | unsigned char *user = nm + 1; | |
1602 | /* Find end of name. */ | |
1603 | unsigned char *ptr = (unsigned char *) index (user, '/'); | |
1604 | int len = ptr ? ptr - user : strlen (user); | |
1605 | #ifdef VMS | |
1606 | unsigned char *ptr1 = index (user, ':'); | |
1607 | if (ptr1 != 0 && ptr1 - user < len) | |
1608 | len = ptr1 - user; | |
5e570b75 | 1609 | #endif /* VMS */ |
570d7624 JB |
1610 | /* Copy the user name into temp storage. */ |
1611 | o = (unsigned char *) alloca (len + 1); | |
1612 | bcopy ((char *) user, o, len); | |
1613 | o[len] = 0; | |
1614 | ||
1615 | /* Look up the user name. */ | |
1616 | pw = (struct passwd *) getpwnam (o + 1); | |
1617 | if (!pw) | |
1618 | error ("\"%s\" isn't a registered user", o + 1); | |
1619 | ||
1620 | newdir = (unsigned char *) pw->pw_dir; | |
1621 | ||
1622 | /* Discard the user name from NM. */ | |
1623 | nm += len; | |
1624 | } | |
1625 | ||
1626 | if (nm[0] != '/' | |
1627 | #ifdef VMS | |
1628 | && !index (nm, ':') | |
1629 | #endif /* not VMS */ | |
1630 | && !newdir) | |
1631 | { | |
265a9e55 | 1632 | if (NILP (defalt)) |
570d7624 JB |
1633 | defalt = current_buffer->directory; |
1634 | CHECK_STRING (defalt, 1); | |
1635 | newdir = XSTRING (defalt)->data; | |
1636 | } | |
1637 | ||
1638 | /* Now concatenate the directory and name to new space in the stack frame */ | |
1639 | ||
1640 | tlen = (newdir ? strlen (newdir) + 1 : 0) + strlen (nm) + 1; | |
1641 | target = (unsigned char *) alloca (tlen); | |
1642 | *target = 0; | |
1643 | ||
1644 | if (newdir) | |
1645 | { | |
1646 | #ifndef VMS | |
1647 | if (nm[0] == 0 || nm[0] == '/') | |
1648 | strcpy (target, newdir); | |
1649 | else | |
1650 | #endif | |
1651 | file_name_as_directory (target, newdir); | |
1652 | } | |
1653 | ||
1654 | strcat (target, nm); | |
1655 | #ifdef VMS | |
1656 | if (index (target, '/')) | |
1657 | strcpy (target, sys_translate_unix (target)); | |
1658 | #endif /* VMS */ | |
1659 | ||
1660 | /* Now canonicalize by removing /. and /foo/.. if they appear */ | |
1661 | ||
1662 | p = target; | |
1663 | o = target; | |
1664 | ||
1665 | while (*p) | |
1666 | { | |
1667 | #ifdef VMS | |
1668 | if (*p != ']' && *p != '>' && *p != '-') | |
1669 | { | |
1670 | if (*p == '\\') | |
1671 | p++; | |
1672 | *o++ = *p++; | |
1673 | } | |
1674 | else if ((p[0] == ']' || p[0] == '>') && p[0] == p[1] + 2) | |
1675 | /* brackets are offset from each other by 2 */ | |
1676 | { | |
1677 | p += 2; | |
1678 | if (*p != '.' && *p != '-' && o[-1] != '.') | |
1679 | /* convert [foo][bar] to [bar] */ | |
1680 | while (o[-1] != '[' && o[-1] != '<') | |
1681 | o--; | |
1682 | else if (*p == '-' && *o != '.') | |
1683 | *--p = '.'; | |
1684 | } | |
1685 | else if (p[0] == '-' && o[-1] == '.' && | |
1686 | (p[1] == '.' || p[1] == ']' || p[1] == '>')) | |
1687 | /* flush .foo.- ; leave - if stopped by '[' or '<' */ | |
1688 | { | |
1689 | do | |
1690 | o--; | |
1691 | while (o[-1] != '.' && o[-1] != '[' && o[-1] != '<'); | |
5e570b75 | 1692 | if (p[1] == '.') /* foo.-.bar ==> bar. */ |
570d7624 JB |
1693 | p += 2; |
1694 | else if (o[-1] == '.') /* '.foo.-]' ==> ']' */ | |
1695 | p++, o--; | |
1696 | /* else [foo.-] ==> [-] */ | |
1697 | } | |
1698 | else | |
1699 | { | |
1700 | #ifndef VMS4_4 | |
1701 | if (*p == '-' && | |
1702 | o[-1] != '[' && o[-1] != '<' && o[-1] != '.' && | |
1703 | p[1] != ']' && p[1] != '>' && p[1] != '.') | |
1704 | *p = '_'; | |
1705 | #endif /* VMS4_4 */ | |
1706 | *o++ = *p++; | |
1707 | } | |
1708 | #else /* not VMS */ | |
1709 | if (*p != '/') | |
5e570b75 | 1710 | { |
570d7624 JB |
1711 | *o++ = *p++; |
1712 | } | |
1713 | else if (!strncmp (p, "//", 2) | |
1714 | #ifdef APOLLO | |
82330e7f | 1715 | /* // at start of filename is meaningful in Apollo system. */ |
570d7624 JB |
1716 | && o != target |
1717 | #endif /* APOLLO */ | |
1718 | ) | |
1719 | { | |
1720 | o = target; | |
1721 | p++; | |
1722 | } | |
1723 | else if (p[0] == '/' && p[1] == '.' && | |
1724 | (p[2] == '/' || p[2] == 0)) | |
1725 | p += 2; | |
1726 | else if (!strncmp (p, "/..", 3) | |
1727 | /* `/../' is the "superroot" on certain file systems. */ | |
1728 | && o != target | |
1729 | && (p[3] == '/' || p[3] == 0)) | |
1730 | { | |
1731 | while (o != target && *--o != '/') | |
1732 | ; | |
1733 | #ifdef APOLLO | |
1734 | if (o == target + 1 && o[-1] == '/' && o[0] == '/') | |
1735 | ++o; | |
1736 | else | |
1737 | #endif /* APOLLO */ | |
1738 | if (o == target && *o == '/') | |
1739 | ++o; | |
1740 | p += 3; | |
1741 | } | |
1742 | else | |
5e570b75 | 1743 | { |
570d7624 JB |
1744 | *o++ = *p++; |
1745 | } | |
1746 | #endif /* not VMS */ | |
1747 | } | |
1748 | ||
1749 | return make_string (target, o - target); | |
1750 | } | |
1751 | #endif | |
1752 | \f | |
1753 | DEFUN ("substitute-in-file-name", Fsubstitute_in_file_name, | |
1754 | Ssubstitute_in_file_name, 1, 1, 0, | |
1755 | "Substitute environment variables referred to in FILENAME.\n\ | |
1756 | `$FOO' where FOO is an environment variable name means to substitute\n\ | |
1757 | the value of that variable. The variable name should be terminated\n\ | |
1758 | with a character not a letter, digit or underscore; otherwise, enclose\n\ | |
1759 | the entire variable name in braces.\n\ | |
1760 | If `/~' appears, all of FILENAME through that `/' is discarded.\n\n\ | |
1761 | On VMS, `$' substitution is not done; this function does little and only\n\ | |
1762 | duplicates what `expand-file-name' does.") | |
3b7f6e60 EN |
1763 | (filename) |
1764 | Lisp_Object filename; | |
570d7624 JB |
1765 | { |
1766 | unsigned char *nm; | |
1767 | ||
1768 | register unsigned char *s, *p, *o, *x, *endp; | |
1769 | unsigned char *target; | |
1770 | int total = 0; | |
1771 | int substituted = 0; | |
1772 | unsigned char *xnm; | |
8ce069f5 | 1773 | Lisp_Object handler; |
570d7624 | 1774 | |
3b7f6e60 | 1775 | CHECK_STRING (filename, 0); |
570d7624 | 1776 | |
8ce069f5 RS |
1777 | /* If the file name has special constructs in it, |
1778 | call the corresponding file handler. */ | |
3b7f6e60 | 1779 | handler = Ffind_file_name_handler (filename, Qsubstitute_in_file_name); |
8ce069f5 | 1780 | if (!NILP (handler)) |
3b7f6e60 | 1781 | return call2 (handler, Qsubstitute_in_file_name, filename); |
8ce069f5 | 1782 | |
3b7f6e60 | 1783 | nm = XSTRING (filename)->data; |
199607e4 RS |
1784 | #ifdef DOS_NT |
1785 | nm = strcpy (alloca (strlen (nm) + 1), nm); | |
1786 | CORRECT_DIR_SEPS (nm); | |
1787 | substituted = (strcmp (nm, XSTRING (filename)->data) != 0); | |
a5a1cc06 | 1788 | #endif |
3b7f6e60 | 1789 | endp = nm + XSTRING (filename)->size; |
570d7624 | 1790 | |
82330e7f | 1791 | /* If /~ or // appears, discard everything through first slash. */ |
570d7624 JB |
1792 | |
1793 | for (p = nm; p != endp; p++) | |
1794 | { | |
199607e4 RS |
1795 | if ((p[0] == '~' |
1796 | #if defined (APOLLO) || defined (WINDOWSNT) | |
1797 | /* // at start of file name is meaningful in Apollo and | |
82330e7f | 1798 | WindowsNT systems. */ |
199607e4 RS |
1799 | || (IS_DIRECTORY_SEP (p[0]) && p - 1 != nm) |
1800 | #else /* not (APOLLO || WINDOWSNT) */ | |
1801 | || IS_DIRECTORY_SEP (p[0]) | |
1802 | #endif /* not (APOLLO || WINDOWSNT) */ | |
570d7624 | 1803 | ) |
5e570b75 RS |
1804 | && p != nm |
1805 | && (0 | |
570d7624 | 1806 | #ifdef VMS |
5e570b75 | 1807 | || p[-1] == ':' || p[-1] == ']' || p[-1] == '>' |
570d7624 | 1808 | #endif /* VMS */ |
5e570b75 | 1809 | || IS_DIRECTORY_SEP (p[-1]))) |
570d7624 JB |
1810 | { |
1811 | nm = p; | |
1812 | substituted = 1; | |
1813 | } | |
5e570b75 | 1814 | #ifdef DOS_NT |
199607e4 RS |
1815 | /* see comment in expand-file-name about drive specifiers */ |
1816 | else if (IS_DRIVE (p[0]) && p[1] == ':' | |
1817 | && p > nm && IS_DIRECTORY_SEP (p[-1])) | |
4c3c22f3 RS |
1818 | { |
1819 | nm = p; | |
1820 | substituted = 1; | |
1821 | } | |
5e570b75 | 1822 | #endif /* DOS_NT */ |
570d7624 JB |
1823 | } |
1824 | ||
1825 | #ifdef VMS | |
1826 | return build_string (nm); | |
1827 | #else | |
1828 | ||
1829 | /* See if any variables are substituted into the string | |
1830 | and find the total length of their values in `total' */ | |
1831 | ||
1832 | for (p = nm; p != endp;) | |
1833 | if (*p != '$') | |
1834 | p++; | |
1835 | else | |
1836 | { | |
1837 | p++; | |
1838 | if (p == endp) | |
1839 | goto badsubst; | |
1840 | else if (*p == '$') | |
1841 | { | |
1842 | /* "$$" means a single "$" */ | |
1843 | p++; | |
1844 | total -= 1; | |
1845 | substituted = 1; | |
1846 | continue; | |
1847 | } | |
1848 | else if (*p == '{') | |
1849 | { | |
1850 | o = ++p; | |
1851 | while (p != endp && *p != '}') p++; | |
1852 | if (*p != '}') goto missingclose; | |
1853 | s = p; | |
1854 | } | |
1855 | else | |
1856 | { | |
1857 | o = p; | |
1858 | while (p != endp && (isalnum (*p) || *p == '_')) p++; | |
1859 | s = p; | |
1860 | } | |
1861 | ||
1862 | /* Copy out the variable name */ | |
1863 | target = (unsigned char *) alloca (s - o + 1); | |
1864 | strncpy (target, o, s - o); | |
1865 | target[s - o] = 0; | |
5e570b75 | 1866 | #ifdef DOS_NT |
4c3c22f3 | 1867 | strupr (target); /* $home == $HOME etc. */ |
5e570b75 | 1868 | #endif /* DOS_NT */ |
570d7624 JB |
1869 | |
1870 | /* Get variable value */ | |
1871 | o = (unsigned char *) egetenv (target); | |
570d7624 JB |
1872 | if (!o) goto badvar; |
1873 | total += strlen (o); | |
1874 | substituted = 1; | |
1875 | } | |
1876 | ||
1877 | if (!substituted) | |
3b7f6e60 | 1878 | return filename; |
570d7624 JB |
1879 | |
1880 | /* If substitution required, recopy the string and do it */ | |
1881 | /* Make space in stack frame for the new copy */ | |
3b7f6e60 | 1882 | xnm = (unsigned char *) alloca (XSTRING (filename)->size + total + 1); |
570d7624 JB |
1883 | x = xnm; |
1884 | ||
1885 | /* Copy the rest of the name through, replacing $ constructs with values */ | |
1886 | for (p = nm; *p;) | |
1887 | if (*p != '$') | |
1888 | *x++ = *p++; | |
1889 | else | |
1890 | { | |
1891 | p++; | |
1892 | if (p == endp) | |
1893 | goto badsubst; | |
1894 | else if (*p == '$') | |
1895 | { | |
1896 | *x++ = *p++; | |
1897 | continue; | |
1898 | } | |
1899 | else if (*p == '{') | |
1900 | { | |
1901 | o = ++p; | |
1902 | while (p != endp && *p != '}') p++; | |
1903 | if (*p != '}') goto missingclose; | |
1904 | s = p++; | |
1905 | } | |
1906 | else | |
1907 | { | |
1908 | o = p; | |
1909 | while (p != endp && (isalnum (*p) || *p == '_')) p++; | |
1910 | s = p; | |
1911 | } | |
1912 | ||
1913 | /* Copy out the variable name */ | |
1914 | target = (unsigned char *) alloca (s - o + 1); | |
1915 | strncpy (target, o, s - o); | |
1916 | target[s - o] = 0; | |
5e570b75 | 1917 | #ifdef DOS_NT |
4c3c22f3 | 1918 | strupr (target); /* $home == $HOME etc. */ |
5e570b75 | 1919 | #endif /* DOS_NT */ |
570d7624 JB |
1920 | |
1921 | /* Get variable value */ | |
1922 | o = (unsigned char *) egetenv (target); | |
570d7624 JB |
1923 | if (!o) |
1924 | goto badvar; | |
1925 | ||
1926 | strcpy (x, o); | |
1927 | x += strlen (o); | |
1928 | } | |
1929 | ||
1930 | *x = 0; | |
1931 | ||
82330e7f | 1932 | /* If /~ or // appears, discard everything through first slash. */ |
570d7624 JB |
1933 | |
1934 | for (p = xnm; p != x; p++) | |
5e570b75 | 1935 | if ((p[0] == '~' |
199607e4 | 1936 | #if defined (APOLLO) || defined (WINDOWSNT) |
5e570b75 | 1937 | || (IS_DIRECTORY_SEP (p[0]) && p - 1 != xnm) |
199607e4 RS |
1938 | #else /* not (APOLLO || WINDOWSNT) */ |
1939 | || IS_DIRECTORY_SEP (p[0]) | |
1940 | #endif /* not (APOLLO || WINDOWSNT) */ | |
570d7624 | 1941 | ) |
ac5b7072 | 1942 | && p != xnm && IS_DIRECTORY_SEP (p[-1])) |
570d7624 | 1943 | xnm = p; |
5e570b75 | 1944 | #ifdef DOS_NT |
199607e4 RS |
1945 | else if (IS_DRIVE (p[0]) && p[1] == ':' |
1946 | && p > nm && IS_DIRECTORY_SEP (p[-1])) | |
1947 | xnm = p; | |
4c3c22f3 | 1948 | #endif |
570d7624 JB |
1949 | |
1950 | return make_string (xnm, x - xnm); | |
1951 | ||
1952 | badsubst: | |
1953 | error ("Bad format environment-variable substitution"); | |
1954 | missingclose: | |
1955 | error ("Missing \"}\" in environment-variable substitution"); | |
1956 | badvar: | |
1957 | error ("Substituting nonexistent environment variable \"%s\"", target); | |
1958 | ||
1959 | /* NOTREACHED */ | |
1960 | #endif /* not VMS */ | |
1961 | } | |
1962 | \f | |
067ffa38 | 1963 | /* A slightly faster and more convenient way to get |
298b760e | 1964 | (directory-file-name (expand-file-name FOO)). */ |
067ffa38 | 1965 | |
570d7624 JB |
1966 | Lisp_Object |
1967 | expand_and_dir_to_file (filename, defdir) | |
1968 | Lisp_Object filename, defdir; | |
1969 | { | |
199607e4 | 1970 | register Lisp_Object absname; |
570d7624 | 1971 | |
199607e4 | 1972 | absname = Fexpand_file_name (filename, defdir); |
570d7624 JB |
1973 | #ifdef VMS |
1974 | { | |
199607e4 | 1975 | register int c = XSTRING (absname)->data[XSTRING (absname)->size - 1]; |
570d7624 | 1976 | if (c == ':' || c == ']' || c == '>') |
199607e4 | 1977 | absname = Fdirectory_file_name (absname); |
570d7624 JB |
1978 | } |
1979 | #else | |
199607e4 | 1980 | /* Remove final slash, if any (unless this is the root dir). |
570d7624 | 1981 | stat behaves differently depending! */ |
199607e4 RS |
1982 | if (XSTRING (absname)->size > 1 |
1983 | && IS_DIRECTORY_SEP (XSTRING (absname)->data[XSTRING (absname)->size - 1]) | |
1984 | && !IS_DEVICE_SEP (XSTRING (absname)->data[XSTRING (absname)->size-2])) | |
ddc61f46 | 1985 | /* We cannot take shortcuts; they might be wrong for magic file names. */ |
199607e4 | 1986 | absname = Fdirectory_file_name (absname); |
570d7624 | 1987 | #endif |
199607e4 | 1988 | return absname; |
570d7624 JB |
1989 | } |
1990 | \f | |
3ed15d97 RS |
1991 | /* Signal an error if the file ABSNAME already exists. |
1992 | If INTERACTIVE is nonzero, ask the user whether to proceed, | |
1993 | and bypass the error if the user says to go ahead. | |
1994 | QUERYSTRING is a name for the action that is being considered | |
1995 | to alter the file. | |
1996 | *STATPTR is used to store the stat information if the file exists. | |
1997 | If the file does not exist, STATPTR->st_mode is set to 0. */ | |
1998 | ||
c4df73f9 | 1999 | void |
3ed15d97 | 2000 | barf_or_query_if_file_exists (absname, querystring, interactive, statptr) |
570d7624 JB |
2001 | Lisp_Object absname; |
2002 | unsigned char *querystring; | |
2003 | int interactive; | |
3ed15d97 | 2004 | struct stat *statptr; |
570d7624 JB |
2005 | { |
2006 | register Lisp_Object tem; | |
4018b5ef | 2007 | struct stat statbuf; |
570d7624 JB |
2008 | struct gcpro gcpro1; |
2009 | ||
4018b5ef RS |
2010 | /* stat is a good way to tell whether the file exists, |
2011 | regardless of what access permissions it has. */ | |
2012 | if (stat (XSTRING (absname)->data, &statbuf) >= 0) | |
570d7624 JB |
2013 | { |
2014 | if (! interactive) | |
2015 | Fsignal (Qfile_already_exists, | |
2016 | Fcons (build_string ("File already exists"), | |
2017 | Fcons (absname, Qnil))); | |
2018 | GCPRO1 (absname); | |
2019 | tem = do_yes_or_no_p (format1 ("File %s already exists; %s anyway? ", | |
2020 | XSTRING (absname)->data, querystring)); | |
2021 | UNGCPRO; | |
265a9e55 | 2022 | if (NILP (tem)) |
570d7624 JB |
2023 | Fsignal (Qfile_already_exists, |
2024 | Fcons (build_string ("File already exists"), | |
2025 | Fcons (absname, Qnil))); | |
3ed15d97 RS |
2026 | if (statptr) |
2027 | *statptr = statbuf; | |
2028 | } | |
2029 | else | |
2030 | { | |
2031 | if (statptr) | |
2032 | statptr->st_mode = 0; | |
570d7624 JB |
2033 | } |
2034 | return; | |
2035 | } | |
2036 | ||
2037 | DEFUN ("copy-file", Fcopy_file, Scopy_file, 2, 4, | |
349a7710 | 2038 | "fCopy file: \nFCopy %s to file: \np\nP", |
570d7624 JB |
2039 | "Copy FILE to NEWNAME. Both args must be strings.\n\ |
2040 | Signals a `file-already-exists' error if file NEWNAME already exists,\n\ | |
2041 | unless a third argument OK-IF-ALREADY-EXISTS is supplied and non-nil.\n\ | |
2042 | A number as third arg means request confirmation if NEWNAME already exists.\n\ | |
2043 | This is what happens in interactive use with M-x.\n\ | |
349a7710 JB |
2044 | Fourth arg KEEP-TIME non-nil means give the new file the same\n\ |
2045 | last-modified time as the old one. (This works on only some systems.)\n\ | |
2046 | A prefix arg makes KEEP-TIME non-nil.") | |
3b7f6e60 EN |
2047 | (file, newname, ok_if_already_exists, keep_date) |
2048 | Lisp_Object file, newname, ok_if_already_exists, keep_date; | |
570d7624 JB |
2049 | { |
2050 | int ifd, ofd, n; | |
2051 | char buf[16 * 1024]; | |
3ed15d97 | 2052 | struct stat st, out_st; |
32f4334d | 2053 | Lisp_Object handler; |
b1d1b865 | 2054 | struct gcpro gcpro1, gcpro2, gcpro3, gcpro4; |
b5148e85 | 2055 | int count = specpdl_ptr - specpdl; |
f73b0ada | 2056 | int input_file_statable_p; |
b1d1b865 | 2057 | Lisp_Object encoded_file, encoded_newname; |
570d7624 | 2058 | |
b1d1b865 RS |
2059 | encoded_file = encoded_newname = Qnil; |
2060 | GCPRO4 (file, newname, encoded_file, encoded_newname); | |
3b7f6e60 | 2061 | CHECK_STRING (file, 0); |
570d7624 | 2062 | CHECK_STRING (newname, 1); |
b1d1b865 | 2063 | |
3b7f6e60 | 2064 | file = Fexpand_file_name (file, Qnil); |
570d7624 | 2065 | newname = Fexpand_file_name (newname, Qnil); |
32f4334d | 2066 | |
0bf2eed2 | 2067 | /* If the input file name has special constructs in it, |
32f4334d | 2068 | call the corresponding file handler. */ |
3b7f6e60 | 2069 | handler = Ffind_file_name_handler (file, Qcopy_file); |
0bf2eed2 | 2070 | /* Likewise for output file name. */ |
51cf6d37 | 2071 | if (NILP (handler)) |
49307295 | 2072 | handler = Ffind_file_name_handler (newname, Qcopy_file); |
32f4334d | 2073 | if (!NILP (handler)) |
3b7f6e60 | 2074 | RETURN_UNGCPRO (call5 (handler, Qcopy_file, file, newname, |
36712b0a | 2075 | ok_if_already_exists, keep_date)); |
32f4334d | 2076 | |
b1d1b865 RS |
2077 | encoded_file = ENCODE_FILE (file); |
2078 | encoded_newname = ENCODE_FILE (newname); | |
2079 | ||
265a9e55 | 2080 | if (NILP (ok_if_already_exists) |
93c30b5f | 2081 | || INTEGERP (ok_if_already_exists)) |
b1d1b865 | 2082 | barf_or_query_if_file_exists (encoded_newname, "copy to it", |
3ed15d97 | 2083 | INTEGERP (ok_if_already_exists), &out_st); |
b1d1b865 | 2084 | else if (stat (XSTRING (encoded_newname)->data, &out_st) < 0) |
3ed15d97 | 2085 | out_st.st_mode = 0; |
570d7624 | 2086 | |
b1d1b865 | 2087 | ifd = open (XSTRING (encoded_file)->data, O_RDONLY); |
570d7624 | 2088 | if (ifd < 0) |
3b7f6e60 | 2089 | report_file_error ("Opening input file", Fcons (file, Qnil)); |
570d7624 | 2090 | |
b5148e85 RS |
2091 | record_unwind_protect (close_file_unwind, make_number (ifd)); |
2092 | ||
f73b0ada BF |
2093 | /* We can only copy regular files and symbolic links. Other files are not |
2094 | copyable by us. */ | |
2095 | input_file_statable_p = (fstat (ifd, &st) >= 0); | |
2096 | ||
34ead71a | 2097 | #if !defined (MSDOS) || __DJGPP__ > 1 |
3ed15d97 RS |
2098 | if (out_st.st_mode != 0 |
2099 | && st.st_dev == out_st.st_dev && st.st_ino == out_st.st_ino) | |
2100 | { | |
2101 | errno = 0; | |
2102 | report_file_error ("Input and output files are the same", | |
3b7f6e60 | 2103 | Fcons (file, Fcons (newname, Qnil))); |
3ed15d97 RS |
2104 | } |
2105 | #endif | |
2106 | ||
f73b0ada BF |
2107 | #if defined (S_ISREG) && defined (S_ISLNK) |
2108 | if (input_file_statable_p) | |
2109 | { | |
2110 | if (!(S_ISREG (st.st_mode)) && !(S_ISLNK (st.st_mode))) | |
2111 | { | |
2112 | #if defined (EISDIR) | |
2113 | /* Get a better looking error message. */ | |
2114 | errno = EISDIR; | |
2115 | #endif /* EISDIR */ | |
3b7f6e60 | 2116 | report_file_error ("Non-regular file", Fcons (file, Qnil)); |
f73b0ada BF |
2117 | } |
2118 | } | |
2119 | #endif /* S_ISREG && S_ISLNK */ | |
2120 | ||
570d7624 JB |
2121 | #ifdef VMS |
2122 | /* Create the copy file with the same record format as the input file */ | |
b1d1b865 | 2123 | ofd = sys_creat (XSTRING (encoded_newname)->data, 0666, ifd); |
570d7624 | 2124 | #else |
4c3c22f3 RS |
2125 | #ifdef MSDOS |
2126 | /* System's default file type was set to binary by _fmode in emacs.c. */ | |
b1d1b865 | 2127 | ofd = creat (XSTRING (encoded_newname)->data, S_IREAD | S_IWRITE); |
4c3c22f3 | 2128 | #else /* not MSDOS */ |
b1d1b865 | 2129 | ofd = creat (XSTRING (encoded_newname)->data, 0666); |
4c3c22f3 | 2130 | #endif /* not MSDOS */ |
570d7624 JB |
2131 | #endif /* VMS */ |
2132 | if (ofd < 0) | |
3ed15d97 | 2133 | report_file_error ("Opening output file", Fcons (newname, Qnil)); |
b5148e85 RS |
2134 | |
2135 | record_unwind_protect (close_file_unwind, make_number (ofd)); | |
570d7624 | 2136 | |
b5148e85 RS |
2137 | immediate_quit = 1; |
2138 | QUIT; | |
570d7624 JB |
2139 | while ((n = read (ifd, buf, sizeof buf)) > 0) |
2140 | if (write (ofd, buf, n) != n) | |
3ed15d97 | 2141 | report_file_error ("I/O error", Fcons (newname, Qnil)); |
b5148e85 | 2142 | immediate_quit = 0; |
570d7624 | 2143 | |
5acac34e RS |
2144 | /* Closing the output clobbers the file times on some systems. */ |
2145 | if (close (ofd) < 0) | |
2146 | report_file_error ("I/O error", Fcons (newname, Qnil)); | |
2147 | ||
f73b0ada | 2148 | if (input_file_statable_p) |
570d7624 | 2149 | { |
265a9e55 | 2150 | if (!NILP (keep_date)) |
570d7624 | 2151 | { |
de5bf5d3 JB |
2152 | EMACS_TIME atime, mtime; |
2153 | EMACS_SET_SECS_USECS (atime, st.st_atime, 0); | |
2154 | EMACS_SET_SECS_USECS (mtime, st.st_mtime, 0); | |
b1d1b865 RS |
2155 | if (set_file_times (XSTRING (encoded_newname)->data, |
2156 | atime, mtime)) | |
c0b7b21c | 2157 | Fsignal (Qfile_date_error, |
d1b9ed63 | 2158 | Fcons (build_string ("Cannot set file date"), |
3dbcf3f6 | 2159 | Fcons (newname, Qnil))); |
570d7624 | 2160 | } |
2dc3be7e | 2161 | #ifndef MSDOS |
b1d1b865 | 2162 | chmod (XSTRING (encoded_newname)->data, st.st_mode & 07777); |
2dc3be7e RS |
2163 | #else /* MSDOS */ |
2164 | #if defined (__DJGPP__) && __DJGPP__ > 1 | |
2165 | /* In DJGPP v2.0 and later, fstat usually returns true file mode bits, | |
2166 | and if it can't, it tells so. Otherwise, under MSDOS we usually | |
2167 | get only the READ bit, which will make the copied file read-only, | |
2168 | so it's better not to chmod at all. */ | |
2169 | if ((_djstat_flags & _STFAIL_WRITEBIT) == 0) | |
b1d1b865 | 2170 | chmod (XSTRING (encoded_newname)->data, st.st_mode & 07777); |
2dc3be7e RS |
2171 | #endif /* DJGPP version 2 or newer */ |
2172 | #endif /* MSDOS */ | |
570d7624 JB |
2173 | } |
2174 | ||
5acac34e RS |
2175 | close (ifd); |
2176 | ||
b5148e85 RS |
2177 | /* Discard the unwind protects. */ |
2178 | specpdl_ptr = specpdl + count; | |
2179 | ||
570d7624 JB |
2180 | UNGCPRO; |
2181 | return Qnil; | |
2182 | } | |
385b6cc7 | 2183 | \f |
9bbe01fb | 2184 | DEFUN ("make-directory-internal", Fmake_directory_internal, |
353cfc19 | 2185 | Smake_directory_internal, 1, 1, 0, |
3b7f6e60 EN |
2186 | "Create a new directory named DIRECTORY.") |
2187 | (directory) | |
2188 | Lisp_Object directory; | |
570d7624 JB |
2189 | { |
2190 | unsigned char *dir; | |
32f4334d | 2191 | Lisp_Object handler; |
b1d1b865 | 2192 | Lisp_Object encoded_dir; |
570d7624 | 2193 | |
3b7f6e60 EN |
2194 | CHECK_STRING (directory, 0); |
2195 | directory = Fexpand_file_name (directory, Qnil); | |
32f4334d | 2196 | |
3b7f6e60 | 2197 | handler = Ffind_file_name_handler (directory, Qmake_directory_internal); |
32f4334d | 2198 | if (!NILP (handler)) |
3b7f6e60 | 2199 | return call2 (handler, Qmake_directory_internal, directory); |
9bbe01fb | 2200 | |
b1d1b865 RS |
2201 | encoded_dir = ENCODE_FILE (directory); |
2202 | ||
2203 | dir = XSTRING (encoded_dir)->data; | |
570d7624 | 2204 | |
5e570b75 RS |
2205 | #ifdef WINDOWSNT |
2206 | if (mkdir (dir) != 0) | |
2207 | #else | |
570d7624 | 2208 | if (mkdir (dir, 0777) != 0) |
5e570b75 | 2209 | #endif |
3b7f6e60 | 2210 | report_file_error ("Creating directory", Flist (1, &directory)); |
570d7624 | 2211 | |
32f4334d | 2212 | return Qnil; |
570d7624 JB |
2213 | } |
2214 | ||
aa734e17 | 2215 | DEFUN ("delete-directory", Fdelete_directory, Sdelete_directory, 1, 1, "FDelete directory: ", |
3b7f6e60 EN |
2216 | "Delete the directory named DIRECTORY.") |
2217 | (directory) | |
2218 | Lisp_Object directory; | |
570d7624 JB |
2219 | { |
2220 | unsigned char *dir; | |
32f4334d | 2221 | Lisp_Object handler; |
b1d1b865 | 2222 | Lisp_Object encoded_dir; |
570d7624 | 2223 | |
3b7f6e60 EN |
2224 | CHECK_STRING (directory, 0); |
2225 | directory = Fdirectory_file_name (Fexpand_file_name (directory, Qnil)); | |
570d7624 | 2226 | |
3b7f6e60 | 2227 | handler = Ffind_file_name_handler (directory, Qdelete_directory); |
32f4334d | 2228 | if (!NILP (handler)) |
3b7f6e60 | 2229 | return call2 (handler, Qdelete_directory, directory); |
32f4334d | 2230 | |
b1d1b865 RS |
2231 | encoded_dir = ENCODE_FILE (directory); |
2232 | ||
2233 | dir = XSTRING (encoded_dir)->data; | |
2234 | ||
570d7624 | 2235 | if (rmdir (dir) != 0) |
3b7f6e60 | 2236 | report_file_error ("Removing directory", Flist (1, &directory)); |
570d7624 JB |
2237 | |
2238 | return Qnil; | |
2239 | } | |
2240 | ||
2241 | DEFUN ("delete-file", Fdelete_file, Sdelete_file, 1, 1, "fDelete file: ", | |
3b7f6e60 | 2242 | "Delete file named FILENAME.\n\ |
570d7624 JB |
2243 | If file has multiple names, it continues to exist with the other names.") |
2244 | (filename) | |
2245 | Lisp_Object filename; | |
2246 | { | |
32f4334d | 2247 | Lisp_Object handler; |
b1d1b865 RS |
2248 | Lisp_Object encoded_file; |
2249 | ||
570d7624 JB |
2250 | CHECK_STRING (filename, 0); |
2251 | filename = Fexpand_file_name (filename, Qnil); | |
32f4334d | 2252 | |
49307295 | 2253 | handler = Ffind_file_name_handler (filename, Qdelete_file); |
32f4334d | 2254 | if (!NILP (handler)) |
8a9b0da9 | 2255 | return call2 (handler, Qdelete_file, filename); |
32f4334d | 2256 | |
b1d1b865 RS |
2257 | encoded_file = ENCODE_FILE (filename); |
2258 | ||
2259 | if (0 > unlink (XSTRING (encoded_file)->data)) | |
570d7624 | 2260 | report_file_error ("Removing old name", Flist (1, &filename)); |
8a9b0da9 | 2261 | return Qnil; |
570d7624 JB |
2262 | } |
2263 | ||
385b6cc7 RS |
2264 | static Lisp_Object |
2265 | internal_delete_file_1 (ignore) | |
2266 | Lisp_Object ignore; | |
2267 | { | |
2268 | return Qt; | |
2269 | } | |
2270 | ||
2271 | /* Delete file FILENAME, returning 1 if successful and 0 if failed. */ | |
2272 | ||
2273 | int | |
2274 | internal_delete_file (filename) | |
2275 | Lisp_Object filename; | |
2276 | { | |
2277 | return NILP (internal_condition_case_1 (Fdelete_file, filename, | |
2278 | Qt, internal_delete_file_1)); | |
2279 | } | |
2280 | \f | |
570d7624 JB |
2281 | DEFUN ("rename-file", Frename_file, Srename_file, 2, 3, |
2282 | "fRename file: \nFRename %s to file: \np", | |
2283 | "Rename FILE as NEWNAME. Both args strings.\n\ | |
2284 | If file has names other than FILE, it continues to have those names.\n\ | |
2285 | Signals a `file-already-exists' error if a file NEWNAME already exists\n\ | |
2286 | unless optional third argument OK-IF-ALREADY-EXISTS is non-nil.\n\ | |
2287 | A number as third arg means request confirmation if NEWNAME already exists.\n\ | |
2288 | This is what happens in interactive use with M-x.") | |
3b7f6e60 EN |
2289 | (file, newname, ok_if_already_exists) |
2290 | Lisp_Object file, newname, ok_if_already_exists; | |
570d7624 JB |
2291 | { |
2292 | #ifdef NO_ARG_ARRAY | |
2293 | Lisp_Object args[2]; | |
2294 | #endif | |
32f4334d | 2295 | Lisp_Object handler; |
b1d1b865 RS |
2296 | struct gcpro gcpro1, gcpro2, gcpro3, gcpro4; |
2297 | Lisp_Object encoded_file, encoded_newname; | |
570d7624 | 2298 | |
b1d1b865 RS |
2299 | encoded_file = encoded_newname = Qnil; |
2300 | GCPRO4 (file, newname, encoded_file, encoded_newname); | |
3b7f6e60 | 2301 | CHECK_STRING (file, 0); |
570d7624 | 2302 | CHECK_STRING (newname, 1); |
3b7f6e60 | 2303 | file = Fexpand_file_name (file, Qnil); |
570d7624 | 2304 | newname = Fexpand_file_name (newname, Qnil); |
32f4334d RS |
2305 | |
2306 | /* If the file name has special constructs in it, | |
2307 | call the corresponding file handler. */ | |
3b7f6e60 | 2308 | handler = Ffind_file_name_handler (file, Qrename_file); |
51cf6d37 | 2309 | if (NILP (handler)) |
49307295 | 2310 | handler = Ffind_file_name_handler (newname, Qrename_file); |
32f4334d | 2311 | if (!NILP (handler)) |
36712b0a | 2312 | RETURN_UNGCPRO (call4 (handler, Qrename_file, |
3b7f6e60 | 2313 | file, newname, ok_if_already_exists)); |
32f4334d | 2314 | |
b1d1b865 RS |
2315 | encoded_file = ENCODE_FILE (file); |
2316 | encoded_newname = ENCODE_FILE (newname); | |
2317 | ||
265a9e55 | 2318 | if (NILP (ok_if_already_exists) |
93c30b5f | 2319 | || INTEGERP (ok_if_already_exists)) |
b1d1b865 | 2320 | barf_or_query_if_file_exists (encoded_newname, "rename to it", |
3ed15d97 | 2321 | INTEGERP (ok_if_already_exists), 0); |
570d7624 | 2322 | #ifndef BSD4_1 |
b1d1b865 | 2323 | if (0 > rename (XSTRING (encoded_file)->data, XSTRING (encoded_newname)->data)) |
570d7624 | 2324 | #else |
b1d1b865 RS |
2325 | if (0 > link (XSTRING (encoded_file)->data, XSTRING (encoded_newname)->data) |
2326 | || 0 > unlink (XSTRING (encoded_file)->data)) | |
570d7624 JB |
2327 | #endif |
2328 | { | |
2329 | if (errno == EXDEV) | |
2330 | { | |
3b7f6e60 | 2331 | Fcopy_file (file, newname, |
d093c3ac RM |
2332 | /* We have already prompted if it was an integer, |
2333 | so don't have copy-file prompt again. */ | |
2334 | NILP (ok_if_already_exists) ? Qnil : Qt, Qt); | |
3b7f6e60 | 2335 | Fdelete_file (file); |
570d7624 JB |
2336 | } |
2337 | else | |
2338 | #ifdef NO_ARG_ARRAY | |
2339 | { | |
3b7f6e60 | 2340 | args[0] = file; |
570d7624 JB |
2341 | args[1] = newname; |
2342 | report_file_error ("Renaming", Flist (2, args)); | |
2343 | } | |
2344 | #else | |
3b7f6e60 | 2345 | report_file_error ("Renaming", Flist (2, &file)); |
570d7624 JB |
2346 | #endif |
2347 | } | |
2348 | UNGCPRO; | |
2349 | return Qnil; | |
2350 | } | |
2351 | ||
2352 | DEFUN ("add-name-to-file", Fadd_name_to_file, Sadd_name_to_file, 2, 3, | |
2353 | "fAdd name to file: \nFName to add to %s: \np", | |
2354 | "Give FILE additional name NEWNAME. Both args strings.\n\ | |
2355 | Signals a `file-already-exists' error if a file NEWNAME already exists\n\ | |
2356 | unless optional third argument OK-IF-ALREADY-EXISTS is non-nil.\n\ | |
2357 | A number as third arg means request confirmation if NEWNAME already exists.\n\ | |
2358 | This is what happens in interactive use with M-x.") | |
3b7f6e60 EN |
2359 | (file, newname, ok_if_already_exists) |
2360 | Lisp_Object file, newname, ok_if_already_exists; | |
570d7624 JB |
2361 | { |
2362 | #ifdef NO_ARG_ARRAY | |
2363 | Lisp_Object args[2]; | |
2364 | #endif | |
32f4334d | 2365 | Lisp_Object handler; |
b1d1b865 RS |
2366 | Lisp_Object encoded_file, encoded_newname; |
2367 | struct gcpro gcpro1, gcpro2, gcpro3, gcpro4; | |
570d7624 | 2368 | |
b1d1b865 RS |
2369 | GCPRO4 (file, newname, encoded_file, encoded_newname); |
2370 | encoded_file = encoded_newname = Qnil; | |
3b7f6e60 | 2371 | CHECK_STRING (file, 0); |
570d7624 | 2372 | CHECK_STRING (newname, 1); |
3b7f6e60 | 2373 | file = Fexpand_file_name (file, Qnil); |
570d7624 | 2374 | newname = Fexpand_file_name (newname, Qnil); |
32f4334d RS |
2375 | |
2376 | /* If the file name has special constructs in it, | |
2377 | call the corresponding file handler. */ | |
3b7f6e60 | 2378 | handler = Ffind_file_name_handler (file, Qadd_name_to_file); |
32f4334d | 2379 | if (!NILP (handler)) |
3b7f6e60 | 2380 | RETURN_UNGCPRO (call4 (handler, Qadd_name_to_file, file, |
36712b0a | 2381 | newname, ok_if_already_exists)); |
32f4334d | 2382 | |
adc6741c RS |
2383 | /* If the new name has special constructs in it, |
2384 | call the corresponding file handler. */ | |
2385 | handler = Ffind_file_name_handler (newname, Qadd_name_to_file); | |
2386 | if (!NILP (handler)) | |
3b7f6e60 | 2387 | RETURN_UNGCPRO (call4 (handler, Qadd_name_to_file, file, |
adc6741c RS |
2388 | newname, ok_if_already_exists)); |
2389 | ||
b1d1b865 RS |
2390 | encoded_file = ENCODE_FILE (file); |
2391 | encoded_newname = ENCODE_FILE (newname); | |
2392 | ||
265a9e55 | 2393 | if (NILP (ok_if_already_exists) |
93c30b5f | 2394 | || INTEGERP (ok_if_already_exists)) |
b1d1b865 | 2395 | barf_or_query_if_file_exists (encoded_newname, "make it a new name", |
3ed15d97 | 2396 | INTEGERP (ok_if_already_exists), 0); |
5e570b75 | 2397 | |
570d7624 | 2398 | unlink (XSTRING (newname)->data); |
b1d1b865 | 2399 | if (0 > link (XSTRING (encoded_file)->data, XSTRING (encoded_newname)->data)) |
570d7624 JB |
2400 | { |
2401 | #ifdef NO_ARG_ARRAY | |
3b7f6e60 | 2402 | args[0] = file; |
570d7624 JB |
2403 | args[1] = newname; |
2404 | report_file_error ("Adding new name", Flist (2, args)); | |
2405 | #else | |
3b7f6e60 | 2406 | report_file_error ("Adding new name", Flist (2, &file)); |
570d7624 JB |
2407 | #endif |
2408 | } | |
2409 | ||
2410 | UNGCPRO; | |
2411 | return Qnil; | |
2412 | } | |
2413 | ||
2414 | #ifdef S_IFLNK | |
2415 | DEFUN ("make-symbolic-link", Fmake_symbolic_link, Smake_symbolic_link, 2, 3, | |
2416 | "FMake symbolic link to file: \nFMake symbolic link to file %s: \np", | |
2417 | "Make a symbolic link to FILENAME, named LINKNAME. Both args strings.\n\ | |
11183104 | 2418 | Signals a `file-already-exists' error if a file LINKNAME already exists\n\ |
570d7624 | 2419 | unless optional third argument OK-IF-ALREADY-EXISTS is non-nil.\n\ |
11183104 | 2420 | A number as third arg means request confirmation if LINKNAME already exists.\n\ |
570d7624 | 2421 | This happens for interactive use with M-x.") |
e5d77022 JB |
2422 | (filename, linkname, ok_if_already_exists) |
2423 | Lisp_Object filename, linkname, ok_if_already_exists; | |
570d7624 JB |
2424 | { |
2425 | #ifdef NO_ARG_ARRAY | |
2426 | Lisp_Object args[2]; | |
2427 | #endif | |
32f4334d | 2428 | Lisp_Object handler; |
b1d1b865 RS |
2429 | Lisp_Object encoded_filename, encoded_linkname; |
2430 | struct gcpro gcpro1, gcpro2, gcpro3, gcpro4; | |
570d7624 | 2431 | |
b1d1b865 RS |
2432 | GCPRO4 (filename, linkname, encoded_filename, encoded_linkname); |
2433 | encoded_filename = encoded_linkname = Qnil; | |
570d7624 | 2434 | CHECK_STRING (filename, 0); |
e5d77022 | 2435 | CHECK_STRING (linkname, 1); |
d9bc1c99 RS |
2436 | /* If the link target has a ~, we must expand it to get |
2437 | a truly valid file name. Otherwise, do not expand; | |
2438 | we want to permit links to relative file names. */ | |
2439 | if (XSTRING (filename)->data[0] == '~') | |
2440 | filename = Fexpand_file_name (filename, Qnil); | |
e5d77022 | 2441 | linkname = Fexpand_file_name (linkname, Qnil); |
32f4334d RS |
2442 | |
2443 | /* If the file name has special constructs in it, | |
2444 | call the corresponding file handler. */ | |
49307295 | 2445 | handler = Ffind_file_name_handler (filename, Qmake_symbolic_link); |
32f4334d | 2446 | if (!NILP (handler)) |
36712b0a KH |
2447 | RETURN_UNGCPRO (call4 (handler, Qmake_symbolic_link, filename, |
2448 | linkname, ok_if_already_exists)); | |
32f4334d | 2449 | |
adc6741c RS |
2450 | /* If the new link name has special constructs in it, |
2451 | call the corresponding file handler. */ | |
2452 | handler = Ffind_file_name_handler (linkname, Qmake_symbolic_link); | |
2453 | if (!NILP (handler)) | |
2454 | RETURN_UNGCPRO (call4 (handler, Qmake_symbolic_link, filename, | |
2455 | linkname, ok_if_already_exists)); | |
2456 | ||
b1d1b865 RS |
2457 | encoded_filename = ENCODE_FILE (filename); |
2458 | encoded_linkname = ENCODE_FILE (linkname); | |
2459 | ||
265a9e55 | 2460 | if (NILP (ok_if_already_exists) |
93c30b5f | 2461 | || INTEGERP (ok_if_already_exists)) |
b1d1b865 | 2462 | barf_or_query_if_file_exists (encoded_linkname, "make it a link", |
3ed15d97 | 2463 | INTEGERP (ok_if_already_exists), 0); |
b1d1b865 RS |
2464 | if (0 > symlink (XSTRING (encoded_filename)->data, |
2465 | XSTRING (encoded_linkname)->data)) | |
570d7624 JB |
2466 | { |
2467 | /* If we didn't complain already, silently delete existing file. */ | |
2468 | if (errno == EEXIST) | |
2469 | { | |
b1d1b865 RS |
2470 | unlink (XSTRING (encoded_linkname)->data); |
2471 | if (0 <= symlink (XSTRING (encoded_filename)->data, | |
2472 | XSTRING (encoded_linkname)->data)) | |
1a04498e KH |
2473 | { |
2474 | UNGCPRO; | |
2475 | return Qnil; | |
2476 | } | |
570d7624 JB |
2477 | } |
2478 | ||
2479 | #ifdef NO_ARG_ARRAY | |
2480 | args[0] = filename; | |
e5d77022 | 2481 | args[1] = linkname; |
570d7624 JB |
2482 | report_file_error ("Making symbolic link", Flist (2, args)); |
2483 | #else | |
2484 | report_file_error ("Making symbolic link", Flist (2, &filename)); | |
2485 | #endif | |
2486 | } | |
2487 | UNGCPRO; | |
2488 | return Qnil; | |
2489 | } | |
2490 | #endif /* S_IFLNK */ | |
2491 | ||
2492 | #ifdef VMS | |
2493 | ||
2494 | DEFUN ("define-logical-name", Fdefine_logical_name, Sdefine_logical_name, | |
2495 | 2, 2, "sDefine logical name: \nsDefine logical name %s as: ", | |
2496 | "Define the job-wide logical name NAME to have the value STRING.\n\ | |
2497 | If STRING is nil or a null string, the logical name NAME is deleted.") | |
3b7f6e60 EN |
2498 | (name, string) |
2499 | Lisp_Object name; | |
570d7624 JB |
2500 | Lisp_Object string; |
2501 | { | |
3b7f6e60 | 2502 | CHECK_STRING (name, 0); |
265a9e55 | 2503 | if (NILP (string)) |
3b7f6e60 | 2504 | delete_logical_name (XSTRING (name)->data); |
570d7624 JB |
2505 | else |
2506 | { | |
2507 | CHECK_STRING (string, 1); | |
2508 | ||
2509 | if (XSTRING (string)->size == 0) | |
3b7f6e60 | 2510 | delete_logical_name (XSTRING (name)->data); |
570d7624 | 2511 | else |
3b7f6e60 | 2512 | define_logical_name (XSTRING (name)->data, XSTRING (string)->data); |
570d7624 JB |
2513 | } |
2514 | ||
2515 | return string; | |
2516 | } | |
2517 | #endif /* VMS */ | |
2518 | ||
2519 | #ifdef HPUX_NET | |
2520 | ||
2521 | DEFUN ("sysnetunam", Fsysnetunam, Ssysnetunam, 2, 2, 0, | |
2522 | "Open a network connection to PATH using LOGIN as the login string.") | |
2523 | (path, login) | |
2524 | Lisp_Object path, login; | |
2525 | { | |
2526 | int netresult; | |
199607e4 | 2527 | |
570d7624 | 2528 | CHECK_STRING (path, 0); |
199607e4 RS |
2529 | CHECK_STRING (login, 0); |
2530 | ||
570d7624 JB |
2531 | netresult = netunam (XSTRING (path)->data, XSTRING (login)->data); |
2532 | ||
2533 | if (netresult == -1) | |
2534 | return Qnil; | |
2535 | else | |
2536 | return Qt; | |
2537 | } | |
2538 | #endif /* HPUX_NET */ | |
2539 | \f | |
2540 | DEFUN ("file-name-absolute-p", Ffile_name_absolute_p, Sfile_name_absolute_p, | |
2541 | 1, 1, 0, | |
199607e4 | 2542 | "Return t if file FILENAME specifies an absolute file name.\n\ |
570d7624 JB |
2543 | On Unix, this is a name starting with a `/' or a `~'.") |
2544 | (filename) | |
2545 | Lisp_Object filename; | |
2546 | { | |
2547 | unsigned char *ptr; | |
2548 | ||
2549 | CHECK_STRING (filename, 0); | |
2550 | ptr = XSTRING (filename)->data; | |
5e570b75 | 2551 | if (IS_DIRECTORY_SEP (*ptr) || *ptr == '~' |
570d7624 JB |
2552 | #ifdef VMS |
2553 | /* ??? This criterion is probably wrong for '<'. */ | |
2554 | || index (ptr, ':') || index (ptr, '<') | |
2555 | || (*ptr == '[' && (ptr[1] != '-' || (ptr[2] != '.' && ptr[2] != ']')) | |
2556 | && ptr[1] != '.') | |
2557 | #endif /* VMS */ | |
5e570b75 | 2558 | #ifdef DOS_NT |
199607e4 | 2559 | || (IS_DRIVE (*ptr) && ptr[1] == ':' && IS_DIRECTORY_SEP (ptr[2])) |
4c3c22f3 | 2560 | #endif |
570d7624 JB |
2561 | ) |
2562 | return Qt; | |
2563 | else | |
2564 | return Qnil; | |
2565 | } | |
3beeedfe RS |
2566 | \f |
2567 | /* Return nonzero if file FILENAME exists and can be executed. */ | |
2568 | ||
2569 | static int | |
2570 | check_executable (filename) | |
2571 | char *filename; | |
2572 | { | |
3be3c08e RS |
2573 | #ifdef DOS_NT |
2574 | int len = strlen (filename); | |
2575 | char *suffix; | |
2576 | struct stat st; | |
2577 | if (stat (filename, &st) < 0) | |
2578 | return 0; | |
34ead71a | 2579 | #if defined (WINDOWSNT) || (defined (MSDOS) && __DJGPP__ > 1) |
199607e4 RS |
2580 | return ((st.st_mode & S_IEXEC) != 0); |
2581 | #else | |
3be3c08e RS |
2582 | return (S_ISREG (st.st_mode) |
2583 | && len >= 5 | |
2584 | && (stricmp ((suffix = filename + len-4), ".com") == 0 | |
2585 | || stricmp (suffix, ".exe") == 0 | |
2dc3be7e RS |
2586 | || stricmp (suffix, ".bat") == 0) |
2587 | || (st.st_mode & S_IFMT) == S_IFDIR); | |
199607e4 | 2588 | #endif /* not WINDOWSNT */ |
3be3c08e | 2589 | #else /* not DOS_NT */ |
de0be7dd RS |
2590 | #ifdef HAVE_EUIDACCESS |
2591 | return (euidaccess (filename, 1) >= 0); | |
3beeedfe RS |
2592 | #else |
2593 | /* Access isn't quite right because it uses the real uid | |
2594 | and we really want to test with the effective uid. | |
2595 | But Unix doesn't give us a right way to do it. */ | |
2596 | return (access (filename, 1) >= 0); | |
2597 | #endif | |
3be3c08e | 2598 | #endif /* not DOS_NT */ |
3beeedfe RS |
2599 | } |
2600 | ||
2601 | /* Return nonzero if file FILENAME exists and can be written. */ | |
2602 | ||
2603 | static int | |
2604 | check_writable (filename) | |
2605 | char *filename; | |
2606 | { | |
3be3c08e RS |
2607 | #ifdef MSDOS |
2608 | struct stat st; | |
2609 | if (stat (filename, &st) < 0) | |
2610 | return 0; | |
2611 | return (st.st_mode & S_IWRITE || (st.st_mode & S_IFMT) == S_IFDIR); | |
2612 | #else /* not MSDOS */ | |
41f3fb38 KH |
2613 | #ifdef HAVE_EUIDACCESS |
2614 | return (euidaccess (filename, 2) >= 0); | |
3beeedfe RS |
2615 | #else |
2616 | /* Access isn't quite right because it uses the real uid | |
2617 | and we really want to test with the effective uid. | |
2618 | But Unix doesn't give us a right way to do it. | |
2619 | Opening with O_WRONLY could work for an ordinary file, | |
2620 | but would lose for directories. */ | |
2621 | return (access (filename, 2) >= 0); | |
2622 | #endif | |
3be3c08e | 2623 | #endif /* not MSDOS */ |
3beeedfe | 2624 | } |
570d7624 JB |
2625 | |
2626 | DEFUN ("file-exists-p", Ffile_exists_p, Sfile_exists_p, 1, 1, 0, | |
2627 | "Return t if file FILENAME exists. (This does not mean you can read it.)\n\ | |
2628 | See also `file-readable-p' and `file-attributes'.") | |
2629 | (filename) | |
2630 | Lisp_Object filename; | |
2631 | { | |
199607e4 | 2632 | Lisp_Object absname; |
32f4334d | 2633 | Lisp_Object handler; |
4018b5ef | 2634 | struct stat statbuf; |
570d7624 JB |
2635 | |
2636 | CHECK_STRING (filename, 0); | |
199607e4 | 2637 | absname = Fexpand_file_name (filename, Qnil); |
32f4334d RS |
2638 | |
2639 | /* If the file name has special constructs in it, | |
2640 | call the corresponding file handler. */ | |
199607e4 | 2641 | handler = Ffind_file_name_handler (absname, Qfile_exists_p); |
32f4334d | 2642 | if (!NILP (handler)) |
199607e4 | 2643 | return call2 (handler, Qfile_exists_p, absname); |
32f4334d | 2644 | |
b1d1b865 RS |
2645 | absname = ENCODE_FILE (absname); |
2646 | ||
199607e4 | 2647 | return (stat (XSTRING (absname)->data, &statbuf) >= 0) ? Qt : Qnil; |
570d7624 JB |
2648 | } |
2649 | ||
2650 | DEFUN ("file-executable-p", Ffile_executable_p, Sfile_executable_p, 1, 1, 0, | |
2651 | "Return t if FILENAME can be executed by you.\n\ | |
8b235fde | 2652 | For a directory, this means you can access files in that directory.") |
570d7624 JB |
2653 | (filename) |
2654 | Lisp_Object filename; | |
2655 | ||
2656 | { | |
199607e4 | 2657 | Lisp_Object absname; |
32f4334d | 2658 | Lisp_Object handler; |
570d7624 JB |
2659 | |
2660 | CHECK_STRING (filename, 0); | |
199607e4 | 2661 | absname = Fexpand_file_name (filename, Qnil); |
32f4334d RS |
2662 | |
2663 | /* If the file name has special constructs in it, | |
2664 | call the corresponding file handler. */ | |
199607e4 | 2665 | handler = Ffind_file_name_handler (absname, Qfile_executable_p); |
32f4334d | 2666 | if (!NILP (handler)) |
199607e4 | 2667 | return call2 (handler, Qfile_executable_p, absname); |
32f4334d | 2668 | |
b1d1b865 RS |
2669 | absname = ENCODE_FILE (absname); |
2670 | ||
199607e4 | 2671 | return (check_executable (XSTRING (absname)->data) ? Qt : Qnil); |
570d7624 JB |
2672 | } |
2673 | ||
2674 | DEFUN ("file-readable-p", Ffile_readable_p, Sfile_readable_p, 1, 1, 0, | |
2675 | "Return t if file FILENAME exists and you can read it.\n\ | |
2676 | See also `file-exists-p' and `file-attributes'.") | |
2677 | (filename) | |
2678 | Lisp_Object filename; | |
2679 | { | |
199607e4 | 2680 | Lisp_Object absname; |
32f4334d | 2681 | Lisp_Object handler; |
4018b5ef | 2682 | int desc; |
bb369dc6 RS |
2683 | int flags; |
2684 | struct stat statbuf; | |
570d7624 JB |
2685 | |
2686 | CHECK_STRING (filename, 0); | |
199607e4 | 2687 | absname = Fexpand_file_name (filename, Qnil); |
32f4334d RS |
2688 | |
2689 | /* If the file name has special constructs in it, | |
2690 | call the corresponding file handler. */ | |
199607e4 | 2691 | handler = Ffind_file_name_handler (absname, Qfile_readable_p); |
32f4334d | 2692 | if (!NILP (handler)) |
199607e4 | 2693 | return call2 (handler, Qfile_readable_p, absname); |
32f4334d | 2694 | |
b1d1b865 RS |
2695 | absname = ENCODE_FILE (absname); |
2696 | ||
199607e4 RS |
2697 | #ifdef DOS_NT |
2698 | /* Under MS-DOS and Windows, open does not work for directories. */ | |
2699 | if (access (XSTRING (absname)->data, 0) == 0) | |
a8a7d065 RS |
2700 | return Qt; |
2701 | return Qnil; | |
199607e4 | 2702 | #else /* not DOS_NT */ |
bb369dc6 RS |
2703 | flags = O_RDONLY; |
2704 | #if defined (S_ISFIFO) && defined (O_NONBLOCK) | |
2705 | /* Opening a fifo without O_NONBLOCK can wait. | |
2706 | We don't want to wait. But we don't want to mess wth O_NONBLOCK | |
2707 | except in the case of a fifo, on a system which handles it. */ | |
2708 | desc = stat (XSTRING (absname)->data, &statbuf); | |
2709 | if (desc < 0) | |
2710 | return Qnil; | |
2711 | if (S_ISFIFO (statbuf.st_mode)) | |
2712 | flags |= O_NONBLOCK; | |
2713 | #endif | |
2714 | desc = open (XSTRING (absname)->data, flags); | |
4018b5ef RS |
2715 | if (desc < 0) |
2716 | return Qnil; | |
2717 | close (desc); | |
2718 | return Qt; | |
199607e4 | 2719 | #endif /* not DOS_NT */ |
570d7624 JB |
2720 | } |
2721 | ||
f793dc6c RS |
2722 | /* Having this before file-symlink-p mysteriously caused it to be forgotten |
2723 | on the RT/PC. */ | |
2724 | DEFUN ("file-writable-p", Ffile_writable_p, Sfile_writable_p, 1, 1, 0, | |
2725 | "Return t if file FILENAME can be written or created by you.") | |
2726 | (filename) | |
2727 | Lisp_Object filename; | |
2728 | { | |
b1d1b865 | 2729 | Lisp_Object absname, dir, encoded; |
f793dc6c RS |
2730 | Lisp_Object handler; |
2731 | struct stat statbuf; | |
2732 | ||
2733 | CHECK_STRING (filename, 0); | |
199607e4 | 2734 | absname = Fexpand_file_name (filename, Qnil); |
f793dc6c RS |
2735 | |
2736 | /* If the file name has special constructs in it, | |
2737 | call the corresponding file handler. */ | |
199607e4 | 2738 | handler = Ffind_file_name_handler (absname, Qfile_writable_p); |
f793dc6c | 2739 | if (!NILP (handler)) |
199607e4 | 2740 | return call2 (handler, Qfile_writable_p, absname); |
f793dc6c | 2741 | |
b1d1b865 RS |
2742 | encoded = ENCODE_FILE (absname); |
2743 | if (stat (XSTRING (encoded)->data, &statbuf) >= 0) | |
2744 | return (check_writable (XSTRING (encoded)->data) | |
f793dc6c | 2745 | ? Qt : Qnil); |
b1d1b865 | 2746 | |
199607e4 | 2747 | dir = Ffile_name_directory (absname); |
f793dc6c RS |
2748 | #ifdef VMS |
2749 | if (!NILP (dir)) | |
2750 | dir = Fdirectory_file_name (dir); | |
2751 | #endif /* VMS */ | |
2752 | #ifdef MSDOS | |
2753 | if (!NILP (dir)) | |
2754 | dir = Fdirectory_file_name (dir); | |
2755 | #endif /* MSDOS */ | |
b1d1b865 RS |
2756 | |
2757 | dir = ENCODE_FILE (dir); | |
f793dc6c RS |
2758 | return (check_writable (!NILP (dir) ? (char *) XSTRING (dir)->data : "") |
2759 | ? Qt : Qnil); | |
2760 | } | |
2761 | \f | |
1f8653eb RS |
2762 | DEFUN ("access-file", Faccess_file, Saccess_file, 2, 2, 0, |
2763 | "Access file FILENAME, and get an error if that does not work.\n\ | |
2764 | The second argument STRING is used in the error message.\n\ | |
2765 | If there is no error, we return nil.") | |
2766 | (filename, string) | |
2767 | Lisp_Object filename, string; | |
2768 | { | |
b1d1b865 | 2769 | Lisp_Object handler, encoded_filename; |
1f8653eb RS |
2770 | int fd; |
2771 | ||
2772 | CHECK_STRING (filename, 0); | |
2773 | ||
2774 | /* If the file name has special constructs in it, | |
2775 | call the corresponding file handler. */ | |
2776 | handler = Ffind_file_name_handler (filename, Qaccess_file); | |
2777 | if (!NILP (handler)) | |
2778 | return call3 (handler, Qaccess_file, filename, string); | |
2779 | ||
b1d1b865 RS |
2780 | encoded_filename = ENCODE_FILE (filename); |
2781 | ||
2782 | fd = open (XSTRING (encoded_filename)->data, O_RDONLY); | |
1f8653eb RS |
2783 | if (fd < 0) |
2784 | report_file_error (XSTRING (string)->data, Fcons (filename, Qnil)); | |
2785 | close (fd); | |
2786 | ||
2787 | return Qnil; | |
2788 | } | |
2789 | \f | |
570d7624 | 2790 | DEFUN ("file-symlink-p", Ffile_symlink_p, Sfile_symlink_p, 1, 1, 0, |
89de89c7 RS |
2791 | "Return non-nil if file FILENAME is the name of a symbolic link.\n\ |
2792 | The value is the name of the file to which it is linked.\n\ | |
2793 | Otherwise returns nil.") | |
570d7624 JB |
2794 | (filename) |
2795 | Lisp_Object filename; | |
2796 | { | |
2797 | #ifdef S_IFLNK | |
2798 | char *buf; | |
2799 | int bufsize; | |
2800 | int valsize; | |
2801 | Lisp_Object val; | |
32f4334d | 2802 | Lisp_Object handler; |
570d7624 JB |
2803 | |
2804 | CHECK_STRING (filename, 0); | |
2805 | filename = Fexpand_file_name (filename, Qnil); | |
2806 | ||
32f4334d RS |
2807 | /* If the file name has special constructs in it, |
2808 | call the corresponding file handler. */ | |
49307295 | 2809 | handler = Ffind_file_name_handler (filename, Qfile_symlink_p); |
32f4334d RS |
2810 | if (!NILP (handler)) |
2811 | return call2 (handler, Qfile_symlink_p, filename); | |
2812 | ||
b1d1b865 RS |
2813 | filename = ENCODE_FILE (filename); |
2814 | ||
570d7624 JB |
2815 | bufsize = 100; |
2816 | while (1) | |
2817 | { | |
2818 | buf = (char *) xmalloc (bufsize); | |
2819 | bzero (buf, bufsize); | |
2820 | valsize = readlink (XSTRING (filename)->data, buf, bufsize); | |
2821 | if (valsize < bufsize) break; | |
2822 | /* Buffer was not long enough */ | |
9ac0d9e0 | 2823 | xfree (buf); |
570d7624 JB |
2824 | bufsize *= 2; |
2825 | } | |
2826 | if (valsize == -1) | |
2827 | { | |
9ac0d9e0 | 2828 | xfree (buf); |
570d7624 JB |
2829 | return Qnil; |
2830 | } | |
2831 | val = make_string (buf, valsize); | |
9ac0d9e0 | 2832 | xfree (buf); |
b1d1b865 | 2833 | return Fdecode_coding_string (val, Vfile_name_coding_system, Qt); |
570d7624 JB |
2834 | #else /* not S_IFLNK */ |
2835 | return Qnil; | |
2836 | #endif /* not S_IFLNK */ | |
2837 | } | |
2838 | ||
570d7624 | 2839 | DEFUN ("file-directory-p", Ffile_directory_p, Sfile_directory_p, 1, 1, 0, |
53520519 | 2840 | "Return t if FILENAME names an existing directory.") |
570d7624 JB |
2841 | (filename) |
2842 | Lisp_Object filename; | |
2843 | { | |
199607e4 | 2844 | register Lisp_Object absname; |
570d7624 | 2845 | struct stat st; |
32f4334d | 2846 | Lisp_Object handler; |
570d7624 | 2847 | |
199607e4 | 2848 | absname = expand_and_dir_to_file (filename, current_buffer->directory); |
570d7624 | 2849 | |
32f4334d RS |
2850 | /* If the file name has special constructs in it, |
2851 | call the corresponding file handler. */ | |
199607e4 | 2852 | handler = Ffind_file_name_handler (absname, Qfile_directory_p); |
32f4334d | 2853 | if (!NILP (handler)) |
199607e4 | 2854 | return call2 (handler, Qfile_directory_p, absname); |
32f4334d | 2855 | |
b1d1b865 RS |
2856 | absname = ENCODE_FILE (absname); |
2857 | ||
199607e4 | 2858 | if (stat (XSTRING (absname)->data, &st) < 0) |
570d7624 JB |
2859 | return Qnil; |
2860 | return (st.st_mode & S_IFMT) == S_IFDIR ? Qt : Qnil; | |
2861 | } | |
2862 | ||
b72dea2a JB |
2863 | DEFUN ("file-accessible-directory-p", Ffile_accessible_directory_p, Sfile_accessible_directory_p, 1, 1, 0, |
2864 | "Return t if file FILENAME is the name of a directory as a file,\n\ | |
2865 | and files in that directory can be opened by you. In order to use a\n\ | |
2866 | directory as a buffer's current directory, this predicate must return true.\n\ | |
2867 | A directory name spec may be given instead; then the value is t\n\ | |
2868 | if the directory so specified exists and really is a readable and\n\ | |
2869 | searchable directory.") | |
2870 | (filename) | |
2871 | Lisp_Object filename; | |
2872 | { | |
32f4334d | 2873 | Lisp_Object handler; |
1a04498e | 2874 | int tem; |
d26859eb | 2875 | struct gcpro gcpro1; |
32f4334d RS |
2876 | |
2877 | /* If the file name has special constructs in it, | |
2878 | call the corresponding file handler. */ | |
49307295 | 2879 | handler = Ffind_file_name_handler (filename, Qfile_accessible_directory_p); |
32f4334d RS |
2880 | if (!NILP (handler)) |
2881 | return call2 (handler, Qfile_accessible_directory_p, filename); | |
2882 | ||
d26859eb KH |
2883 | /* It's an unlikely combination, but yes we really do need to gcpro: |
2884 | Suppose that file-accessible-directory-p has no handler, but | |
2885 | file-directory-p does have a handler; this handler causes a GC which | |
2886 | relocates the string in `filename'; and finally file-directory-p | |
2887 | returns non-nil. Then we would end up passing a garbaged string | |
2888 | to file-executable-p. */ | |
2889 | GCPRO1 (filename); | |
1a04498e KH |
2890 | tem = (NILP (Ffile_directory_p (filename)) |
2891 | || NILP (Ffile_executable_p (filename))); | |
d26859eb | 2892 | UNGCPRO; |
1a04498e | 2893 | return tem ? Qnil : Qt; |
b72dea2a JB |
2894 | } |
2895 | ||
f793dc6c RS |
2896 | DEFUN ("file-regular-p", Ffile_regular_p, Sfile_regular_p, 1, 1, 0, |
2897 | "Return t if file FILENAME is the name of a regular file.\n\ | |
2898 | This is the sort of file that holds an ordinary stream of data bytes.") | |
2899 | (filename) | |
2900 | Lisp_Object filename; | |
2901 | { | |
199607e4 | 2902 | register Lisp_Object absname; |
f793dc6c RS |
2903 | struct stat st; |
2904 | Lisp_Object handler; | |
2905 | ||
199607e4 | 2906 | absname = expand_and_dir_to_file (filename, current_buffer->directory); |
f793dc6c RS |
2907 | |
2908 | /* If the file name has special constructs in it, | |
2909 | call the corresponding file handler. */ | |
199607e4 | 2910 | handler = Ffind_file_name_handler (absname, Qfile_regular_p); |
f793dc6c | 2911 | if (!NILP (handler)) |
199607e4 | 2912 | return call2 (handler, Qfile_regular_p, absname); |
f793dc6c | 2913 | |
b1d1b865 RS |
2914 | absname = ENCODE_FILE (absname); |
2915 | ||
199607e4 | 2916 | if (stat (XSTRING (absname)->data, &st) < 0) |
f793dc6c RS |
2917 | return Qnil; |
2918 | return (st.st_mode & S_IFMT) == S_IFREG ? Qt : Qnil; | |
2919 | } | |
2920 | \f | |
570d7624 | 2921 | DEFUN ("file-modes", Ffile_modes, Sfile_modes, 1, 1, 0, |
3b7f6e60 | 2922 | "Return mode bits of file named FILENAME, as an integer.") |
570d7624 JB |
2923 | (filename) |
2924 | Lisp_Object filename; | |
2925 | { | |
199607e4 | 2926 | Lisp_Object absname; |
570d7624 | 2927 | struct stat st; |
32f4334d | 2928 | Lisp_Object handler; |
570d7624 | 2929 | |
199607e4 | 2930 | absname = expand_and_dir_to_file (filename, current_buffer->directory); |
570d7624 | 2931 | |
32f4334d RS |
2932 | /* If the file name has special constructs in it, |
2933 | call the corresponding file handler. */ | |
199607e4 | 2934 | handler = Ffind_file_name_handler (absname, Qfile_modes); |
32f4334d | 2935 | if (!NILP (handler)) |
199607e4 | 2936 | return call2 (handler, Qfile_modes, absname); |
32f4334d | 2937 | |
b1d1b865 RS |
2938 | absname = ENCODE_FILE (absname); |
2939 | ||
199607e4 | 2940 | if (stat (XSTRING (absname)->data, &st) < 0) |
570d7624 | 2941 | return Qnil; |
34ead71a | 2942 | #if defined (MSDOS) && __DJGPP__ < 2 |
199607e4 | 2943 | if (check_executable (XSTRING (absname)->data)) |
3be3c08e | 2944 | st.st_mode |= S_IEXEC; |
34ead71a | 2945 | #endif /* MSDOS && __DJGPP__ < 2 */ |
3ace87e3 | 2946 | |
570d7624 JB |
2947 | return make_number (st.st_mode & 07777); |
2948 | } | |
2949 | ||
2950 | DEFUN ("set-file-modes", Fset_file_modes, Sset_file_modes, 2, 2, 0, | |
3b7f6e60 | 2951 | "Set mode bits of file named FILENAME to MODE (an integer).\n\ |
570d7624 JB |
2952 | Only the 12 low bits of MODE are used.") |
2953 | (filename, mode) | |
2954 | Lisp_Object filename, mode; | |
2955 | { | |
b1d1b865 | 2956 | Lisp_Object absname, encoded_absname; |
32f4334d | 2957 | Lisp_Object handler; |
570d7624 | 2958 | |
199607e4 | 2959 | absname = Fexpand_file_name (filename, current_buffer->directory); |
570d7624 JB |
2960 | CHECK_NUMBER (mode, 1); |
2961 | ||
32f4334d RS |
2962 | /* If the file name has special constructs in it, |
2963 | call the corresponding file handler. */ | |
199607e4 | 2964 | handler = Ffind_file_name_handler (absname, Qset_file_modes); |
32f4334d | 2965 | if (!NILP (handler)) |
199607e4 | 2966 | return call3 (handler, Qset_file_modes, absname, mode); |
32f4334d | 2967 | |
b1d1b865 RS |
2968 | encoded_absname = ENCODE_FILE (absname); |
2969 | ||
2970 | if (chmod (XSTRING (encoded_absname)->data, XINT (mode)) < 0) | |
199607e4 | 2971 | report_file_error ("Doing chmod", Fcons (absname, Qnil)); |
570d7624 JB |
2972 | |
2973 | return Qnil; | |
2974 | } | |
2975 | ||
c24e9a53 | 2976 | DEFUN ("set-default-file-modes", Fset_default_file_modes, Sset_default_file_modes, 1, 1, 0, |
5f85ea58 RS |
2977 | "Set the file permission bits for newly created files.\n\ |
2978 | The argument MODE should be an integer; only the low 9 bits are used.\n\ | |
36a8c287 | 2979 | This setting is inherited by subprocesses.") |
5f85ea58 RS |
2980 | (mode) |
2981 | Lisp_Object mode; | |
36a8c287 | 2982 | { |
5f85ea58 | 2983 | CHECK_NUMBER (mode, 0); |
199607e4 | 2984 | |
5f85ea58 | 2985 | umask ((~ XINT (mode)) & 0777); |
36a8c287 JB |
2986 | |
2987 | return Qnil; | |
2988 | } | |
2989 | ||
c24e9a53 | 2990 | DEFUN ("default-file-modes", Fdefault_file_modes, Sdefault_file_modes, 0, 0, 0, |
5f85ea58 RS |
2991 | "Return the default file protection for created files.\n\ |
2992 | The value is an integer.") | |
36a8c287 JB |
2993 | () |
2994 | { | |
5f85ea58 RS |
2995 | int realmask; |
2996 | Lisp_Object value; | |
36a8c287 | 2997 | |
5f85ea58 RS |
2998 | realmask = umask (0); |
2999 | umask (realmask); | |
36a8c287 | 3000 | |
46283abe | 3001 | XSETINT (value, (~ realmask) & 0777); |
5f85ea58 | 3002 | return value; |
36a8c287 | 3003 | } |
f793dc6c | 3004 | \f |
85ffea93 RS |
3005 | #ifdef unix |
3006 | ||
3007 | DEFUN ("unix-sync", Funix_sync, Sunix_sync, 0, 0, "", | |
3008 | "Tell Unix to finish all pending disk updates.") | |
3009 | () | |
3010 | { | |
3011 | sync (); | |
3012 | return Qnil; | |
3013 | } | |
3014 | ||
3015 | #endif /* unix */ | |
3016 | ||
570d7624 JB |
3017 | DEFUN ("file-newer-than-file-p", Ffile_newer_than_file_p, Sfile_newer_than_file_p, 2, 2, 0, |
3018 | "Return t if file FILE1 is newer than file FILE2.\n\ | |
3019 | If FILE1 does not exist, the answer is nil;\n\ | |
3020 | otherwise, if FILE2 does not exist, the answer is t.") | |
3021 | (file1, file2) | |
3022 | Lisp_Object file1, file2; | |
3023 | { | |
199607e4 | 3024 | Lisp_Object absname1, absname2; |
570d7624 JB |
3025 | struct stat st; |
3026 | int mtime1; | |
32f4334d | 3027 | Lisp_Object handler; |
09121adc | 3028 | struct gcpro gcpro1, gcpro2; |
570d7624 JB |
3029 | |
3030 | CHECK_STRING (file1, 0); | |
3031 | CHECK_STRING (file2, 0); | |
3032 | ||
199607e4 RS |
3033 | absname1 = Qnil; |
3034 | GCPRO2 (absname1, file2); | |
3035 | absname1 = expand_and_dir_to_file (file1, current_buffer->directory); | |
3036 | absname2 = expand_and_dir_to_file (file2, current_buffer->directory); | |
09121adc | 3037 | UNGCPRO; |
570d7624 | 3038 | |
32f4334d RS |
3039 | /* If the file name has special constructs in it, |
3040 | call the corresponding file handler. */ | |
199607e4 | 3041 | handler = Ffind_file_name_handler (absname1, Qfile_newer_than_file_p); |
51cf6d37 | 3042 | if (NILP (handler)) |
199607e4 | 3043 | handler = Ffind_file_name_handler (absname2, Qfile_newer_than_file_p); |
32f4334d | 3044 | if (!NILP (handler)) |
199607e4 | 3045 | return call3 (handler, Qfile_newer_than_file_p, absname1, absname2); |
32f4334d | 3046 | |
b1d1b865 RS |
3047 | GCPRO2 (absname1, absname2); |
3048 | absname1 = ENCODE_FILE (absname1); | |
3049 | absname2 = ENCODE_FILE (absname2); | |
3050 | UNGCPRO; | |
3051 | ||
199607e4 | 3052 | if (stat (XSTRING (absname1)->data, &st) < 0) |
570d7624 JB |
3053 | return Qnil; |
3054 | ||
3055 | mtime1 = st.st_mtime; | |
3056 | ||
199607e4 | 3057 | if (stat (XSTRING (absname2)->data, &st) < 0) |
570d7624 JB |
3058 | return Qt; |
3059 | ||
3060 | return (mtime1 > st.st_mtime) ? Qt : Qnil; | |
3061 | } | |
3062 | \f | |
5e570b75 | 3063 | #ifdef DOS_NT |
4c3c22f3 | 3064 | Lisp_Object Qfind_buffer_file_type; |
5e570b75 | 3065 | #endif /* DOS_NT */ |
4c3c22f3 | 3066 | |
6fdaa9a0 KH |
3067 | #ifndef READ_BUF_SIZE |
3068 | #define READ_BUF_SIZE (64 << 10) | |
3069 | #endif | |
3070 | ||
570d7624 | 3071 | DEFUN ("insert-file-contents", Finsert_file_contents, Sinsert_file_contents, |
3d0387c0 | 3072 | 1, 5, 0, |
570d7624 | 3073 | "Insert contents of file FILENAME after point.\n\ |
7fded690 | 3074 | Returns list of absolute file name and length of data inserted.\n\ |
570d7624 JB |
3075 | If second argument VISIT is non-nil, the buffer's visited filename\n\ |
3076 | and last save file modtime are set, and it is marked unmodified.\n\ | |
3077 | If visiting and the file does not exist, visiting is completed\n\ | |
6fdaa9a0 | 3078 | before the error is signaled.\n\ |
7fded690 JB |
3079 | The optional third and fourth arguments BEG and END\n\ |
3080 | specify what portion of the file to insert.\n\ | |
3d0387c0 | 3081 | If VISIT is non-nil, BEG and END must be nil.\n\ |
94bec52a | 3082 | \n\ |
3d0387c0 RS |
3083 | If optional fifth argument REPLACE is non-nil,\n\ |
3084 | it means replace the current buffer contents (in the accessible portion)\n\ | |
3085 | with the file contents. This is better than simply deleting and inserting\n\ | |
3086 | the whole thing because (1) it preserves some marker positions\n\ | |
94bec52a RS |
3087 | and (2) it puts less data in the undo list.\n\ |
3088 | When REPLACE is non-nil, the value is the number of characters actually read,\n\ | |
6fdaa9a0 KH |
3089 | which is often less than the number of characters to be read.\n\ |
3090 | This does code conversion according to the value of\n\ | |
789f1700 KH |
3091 | `coding-system-for-read' or `file-coding-system-alist',\n\ |
3092 | and sets the variable `last-coding-system-used' to the coding system\n\ | |
3093 | actually used.") | |
3d0387c0 RS |
3094 | (filename, visit, beg, end, replace) |
3095 | Lisp_Object filename, visit, beg, end, replace; | |
570d7624 JB |
3096 | { |
3097 | struct stat st; | |
3098 | register int fd; | |
3099 | register int inserted = 0; | |
3100 | register int how_much; | |
6fdaa9a0 | 3101 | register int unprocessed; |
570d7624 | 3102 | int count = specpdl_ptr - specpdl; |
b1d1b865 RS |
3103 | struct gcpro gcpro1, gcpro2, gcpro3, gcpro4; |
3104 | Lisp_Object handler, val, insval, orig_filename; | |
d6a3cc15 | 3105 | Lisp_Object p; |
7fded690 | 3106 | int total; |
53c34c46 | 3107 | int not_regular = 0; |
6fdaa9a0 KH |
3108 | char read_buf[READ_BUF_SIZE]; |
3109 | struct coding_system coding; | |
3dbcf3f6 | 3110 | unsigned char buffer[1 << 14]; |
727a0b4a | 3111 | int replace_handled = 0; |
32f4334d | 3112 | |
95385625 RS |
3113 | if (current_buffer->base_buffer && ! NILP (visit)) |
3114 | error ("Cannot do file visiting in an indirect buffer"); | |
3115 | ||
3116 | if (!NILP (current_buffer->read_only)) | |
3117 | Fbarf_if_buffer_read_only (); | |
3118 | ||
32f4334d | 3119 | val = Qnil; |
d6a3cc15 | 3120 | p = Qnil; |
b1d1b865 | 3121 | orig_filename = Qnil; |
32f4334d | 3122 | |
b1d1b865 | 3123 | GCPRO4 (filename, val, p, orig_filename); |
570d7624 JB |
3124 | |
3125 | CHECK_STRING (filename, 0); | |
3126 | filename = Fexpand_file_name (filename, Qnil); | |
3127 | ||
32f4334d RS |
3128 | /* If the file name has special constructs in it, |
3129 | call the corresponding file handler. */ | |
49307295 | 3130 | handler = Ffind_file_name_handler (filename, Qinsert_file_contents); |
32f4334d RS |
3131 | if (!NILP (handler)) |
3132 | { | |
3d0387c0 RS |
3133 | val = call6 (handler, Qinsert_file_contents, filename, |
3134 | visit, beg, end, replace); | |
32f4334d RS |
3135 | goto handled; |
3136 | } | |
3137 | ||
b1d1b865 RS |
3138 | orig_filename = filename; |
3139 | filename = ENCODE_FILE (filename); | |
3140 | ||
570d7624 JB |
3141 | fd = -1; |
3142 | ||
3143 | #ifndef APOLLO | |
99bc28f4 | 3144 | if (stat (XSTRING (filename)->data, &st) < 0) |
570d7624 | 3145 | #else |
4018b5ef | 3146 | if ((fd = open (XSTRING (filename)->data, O_RDONLY)) < 0 |
570d7624 JB |
3147 | || fstat (fd, &st) < 0) |
3148 | #endif /* not APOLLO */ | |
3149 | { | |
3150 | if (fd >= 0) close (fd); | |
99bc28f4 | 3151 | badopen: |
265a9e55 | 3152 | if (NILP (visit)) |
b1d1b865 | 3153 | report_file_error ("Opening input file", Fcons (orig_filename, Qnil)); |
570d7624 JB |
3154 | st.st_mtime = -1; |
3155 | how_much = 0; | |
0de6b8f4 RS |
3156 | if (!NILP (Vcoding_system_for_read)) |
3157 | current_buffer->buffer_file_coding_system = Vcoding_system_for_read; | |
570d7624 JB |
3158 | goto notfound; |
3159 | } | |
3160 | ||
99bc28f4 | 3161 | #ifdef S_IFREG |
be53b411 JB |
3162 | /* This code will need to be changed in order to work on named |
3163 | pipes, and it's probably just not worth it. So we should at | |
3164 | least signal an error. */ | |
99bc28f4 | 3165 | if (!S_ISREG (st.st_mode)) |
330bfe57 | 3166 | { |
d4b8687b RS |
3167 | not_regular = 1; |
3168 | ||
3169 | if (! NILP (visit)) | |
3170 | goto notfound; | |
3171 | ||
3172 | if (! NILP (replace) || ! NILP (beg) || ! NILP (end)) | |
330bfe57 RS |
3173 | Fsignal (Qfile_error, |
3174 | Fcons (build_string ("not a regular file"), | |
b1d1b865 | 3175 | Fcons (orig_filename, Qnil))); |
330bfe57 | 3176 | } |
be53b411 JB |
3177 | #endif |
3178 | ||
99bc28f4 | 3179 | if (fd < 0) |
4018b5ef | 3180 | if ((fd = open (XSTRING (filename)->data, O_RDONLY)) < 0) |
99bc28f4 KH |
3181 | goto badopen; |
3182 | ||
3183 | /* Replacement should preserve point as it preserves markers. */ | |
3184 | if (!NILP (replace)) | |
3185 | record_unwind_protect (restore_point_unwind, Fpoint_marker ()); | |
3186 | ||
3187 | record_unwind_protect (close_file_unwind, make_number (fd)); | |
3188 | ||
570d7624 | 3189 | /* Supposedly happens on VMS. */ |
d4b8687b | 3190 | if (! not_regular && st.st_size < 0) |
570d7624 | 3191 | error ("File size is negative"); |
be53b411 | 3192 | |
7fded690 JB |
3193 | if (!NILP (beg) || !NILP (end)) |
3194 | if (!NILP (visit)) | |
3195 | error ("Attempt to visit less than an entire file"); | |
3196 | ||
3197 | if (!NILP (beg)) | |
3198 | CHECK_NUMBER (beg, 0); | |
3199 | else | |
2acfd7ae | 3200 | XSETFASTINT (beg, 0); |
7fded690 JB |
3201 | |
3202 | if (!NILP (end)) | |
3203 | CHECK_NUMBER (end, 0); | |
3204 | else | |
3205 | { | |
d4b8687b RS |
3206 | if (! not_regular) |
3207 | { | |
3208 | XSETINT (end, st.st_size); | |
3209 | if (XINT (end) != st.st_size) | |
3210 | error ("Maximum buffer size exceeded"); | |
3211 | } | |
7fded690 JB |
3212 | } |
3213 | ||
c9e82392 KH |
3214 | /* Decide the coding-system of the file. */ |
3215 | { | |
3216 | Lisp_Object val = Qnil; | |
3217 | ||
3218 | if (!NILP (Vcoding_system_for_read)) | |
3219 | val = Vcoding_system_for_read; | |
3220 | else if (NILP (current_buffer->enable_multibyte_characters)) | |
3221 | val = Qemacs_mule; | |
3222 | else | |
3223 | { | |
d062cf33 | 3224 | if (! NILP (Vset_auto_coding_function)) |
c9e82392 | 3225 | { |
0414b394 KH |
3226 | /* Find a coding system specified in the heading two lines |
3227 | or in the tailing several lines of the file. We assume | |
3228 | that the 1K-byte and 3K-byte for heading and tailing | |
3229 | respectively are sufficient fot this purpose. */ | |
3230 | int how_many, nread; | |
3231 | ||
3232 | if (st.st_size <= (1024 * 4)) | |
3233 | nread = read (fd, read_buf, 1024 * 4); | |
3234 | else | |
3235 | { | |
3236 | nread = read (fd, read_buf, 1024); | |
3237 | if (nread >= 0) | |
3238 | { | |
3239 | if (lseek (fd, st.st_size - (1024 * 3), 0) < 0) | |
3240 | report_file_error ("Setting file position", | |
b1d1b865 | 3241 | Fcons (orig_filename, Qnil)); |
0414b394 KH |
3242 | nread += read (fd, read_buf + nread, 1024 * 3); |
3243 | } | |
3244 | } | |
c9e82392 KH |
3245 | |
3246 | if (nread < 0) | |
3247 | error ("IO error reading %s: %s", | |
b1d1b865 | 3248 | XSTRING (orig_filename)->data, strerror (errno)); |
c9e82392 KH |
3249 | else if (nread > 0) |
3250 | { | |
0414b394 | 3251 | val = call1 (Vset_auto_coding_function, |
c9e82392 KH |
3252 | make_string (read_buf, nread)); |
3253 | /* Rewind the file for the actual read done later. */ | |
3254 | if (lseek (fd, 0, 0) < 0) | |
3255 | report_file_error ("Setting file position", | |
b1d1b865 | 3256 | Fcons (orig_filename, Qnil)); |
c9e82392 KH |
3257 | } |
3258 | } | |
3259 | if (NILP (val)) | |
3260 | { | |
3261 | Lisp_Object args[6], coding_systems; | |
3262 | ||
b1d1b865 | 3263 | args[0] = Qinsert_file_contents, args[1] = orig_filename, |
c9e82392 KH |
3264 | args[2] = visit, args[3] = beg, args[4] = end, args[5] = replace; |
3265 | coding_systems = Ffind_operation_coding_system (6, args); | |
3266 | if (CONSP (coding_systems)) val = XCONS (coding_systems)->car; | |
3267 | } | |
3268 | } | |
3269 | setup_coding_system (Fcheck_coding_system (val), &coding); | |
3270 | } | |
3271 | ||
3d0387c0 RS |
3272 | /* If requested, replace the accessible part of the buffer |
3273 | with the file contents. Avoid replacing text at the | |
3274 | beginning or end of the buffer that matches the file contents; | |
3dbcf3f6 RS |
3275 | that preserves markers pointing to the unchanged parts. |
3276 | ||
3277 | Here we implement this feature in an optimized way | |
3278 | for the case where code conversion is NOT needed. | |
3279 | The following if-statement handles the case of conversion | |
727a0b4a RS |
3280 | in a less optimal way. |
3281 | ||
3282 | If the code conversion is "automatic" then we try using this | |
3283 | method and hope for the best. | |
3284 | But if we discover the need for conversion, we give up on this method | |
3285 | and let the following if-statement handle the replace job. */ | |
3dbcf3f6 | 3286 | if (!NILP (replace) |
6ad0beeb | 3287 | && ! CODING_REQUIRE_DECODING (&coding)) |
3d0387c0 | 3288 | { |
3d0387c0 RS |
3289 | int same_at_start = BEGV; |
3290 | int same_at_end = ZV; | |
9c28748f | 3291 | int overlap; |
6fdaa9a0 KH |
3292 | /* There is still a possibility we will find the need to do code |
3293 | conversion. If that happens, we set this variable to 1 to | |
727a0b4a | 3294 | give up on handling REPLACE in the optimized way. */ |
6fdaa9a0 | 3295 | int giveup_match_end = 0; |
9c28748f | 3296 | |
4d2a0879 RS |
3297 | if (XINT (beg) != 0) |
3298 | { | |
3299 | if (lseek (fd, XINT (beg), 0) < 0) | |
3300 | report_file_error ("Setting file position", | |
b1d1b865 | 3301 | Fcons (orig_filename, Qnil)); |
4d2a0879 RS |
3302 | } |
3303 | ||
3d0387c0 RS |
3304 | immediate_quit = 1; |
3305 | QUIT; | |
3306 | /* Count how many chars at the start of the file | |
3307 | match the text at the beginning of the buffer. */ | |
3308 | while (1) | |
3309 | { | |
3310 | int nread, bufpos; | |
3311 | ||
3312 | nread = read (fd, buffer, sizeof buffer); | |
3313 | if (nread < 0) | |
3314 | error ("IO error reading %s: %s", | |
b1d1b865 | 3315 | XSTRING (orig_filename)->data, strerror (errno)); |
3d0387c0 RS |
3316 | else if (nread == 0) |
3317 | break; | |
6fdaa9a0 | 3318 | |
0ef69138 | 3319 | if (coding.type == coding_type_undecided) |
727a0b4a | 3320 | detect_coding (&coding, buffer, nread); |
6ad0beeb | 3321 | if (CODING_REQUIRE_DECODING (&coding)) |
727a0b4a RS |
3322 | /* We found that the file should be decoded somehow. |
3323 | Let's give up here. */ | |
3324 | { | |
3325 | giveup_match_end = 1; | |
3326 | break; | |
3327 | } | |
3328 | ||
0ef69138 | 3329 | if (coding.eol_type == CODING_EOL_UNDECIDED) |
727a0b4a | 3330 | detect_eol (&coding, buffer, nread); |
1b335d29 | 3331 | if (coding.eol_type != CODING_EOL_UNDECIDED |
70ec4328 | 3332 | && coding.eol_type != CODING_EOL_LF) |
727a0b4a RS |
3333 | /* We found that the format of eol should be decoded. |
3334 | Let's give up here. */ | |
3335 | { | |
3336 | giveup_match_end = 1; | |
3337 | break; | |
3338 | } | |
3339 | ||
3d0387c0 RS |
3340 | bufpos = 0; |
3341 | while (bufpos < nread && same_at_start < ZV | |
6fdaa9a0 | 3342 | && FETCH_BYTE (same_at_start) == buffer[bufpos]) |
3d0387c0 RS |
3343 | same_at_start++, bufpos++; |
3344 | /* If we found a discrepancy, stop the scan. | |
8e6208c5 | 3345 | Otherwise loop around and scan the next bufferful. */ |
3d0387c0 RS |
3346 | if (bufpos != nread) |
3347 | break; | |
3348 | } | |
3349 | immediate_quit = 0; | |
3350 | /* If the file matches the buffer completely, | |
3351 | there's no need to replace anything. */ | |
4d2a0879 | 3352 | if (same_at_start - BEGV == XINT (end)) |
3d0387c0 RS |
3353 | { |
3354 | close (fd); | |
a1d2b64a | 3355 | specpdl_ptr--; |
1051b3b3 RS |
3356 | /* Truncate the buffer to the size of the file. */ |
3357 | del_range_1 (same_at_start, same_at_end, 0); | |
3d0387c0 RS |
3358 | goto handled; |
3359 | } | |
3360 | immediate_quit = 1; | |
3361 | QUIT; | |
3362 | /* Count how many chars at the end of the file | |
6fdaa9a0 KH |
3363 | match the text at the end of the buffer. But, if we have |
3364 | already found that decoding is necessary, don't waste time. */ | |
3365 | while (!giveup_match_end) | |
3d0387c0 RS |
3366 | { |
3367 | int total_read, nread, bufpos, curpos, trial; | |
3368 | ||
3369 | /* At what file position are we now scanning? */ | |
4d2a0879 | 3370 | curpos = XINT (end) - (ZV - same_at_end); |
fc81fa9e KH |
3371 | /* If the entire file matches the buffer tail, stop the scan. */ |
3372 | if (curpos == 0) | |
3373 | break; | |
3d0387c0 RS |
3374 | /* How much can we scan in the next step? */ |
3375 | trial = min (curpos, sizeof buffer); | |
3376 | if (lseek (fd, curpos - trial, 0) < 0) | |
3377 | report_file_error ("Setting file position", | |
b1d1b865 | 3378 | Fcons (orig_filename, Qnil)); |
3d0387c0 RS |
3379 | |
3380 | total_read = 0; | |
3381 | while (total_read < trial) | |
3382 | { | |
3383 | nread = read (fd, buffer + total_read, trial - total_read); | |
3384 | if (nread <= 0) | |
3385 | error ("IO error reading %s: %s", | |
b1d1b865 | 3386 | XSTRING (orig_filename)->data, strerror (errno)); |
3d0387c0 RS |
3387 | total_read += nread; |
3388 | } | |
8e6208c5 | 3389 | /* Scan this bufferful from the end, comparing with |
3d0387c0 RS |
3390 | the Emacs buffer. */ |
3391 | bufpos = total_read; | |
3392 | /* Compare with same_at_start to avoid counting some buffer text | |
3393 | as matching both at the file's beginning and at the end. */ | |
3394 | while (bufpos > 0 && same_at_end > same_at_start | |
6fdaa9a0 | 3395 | && FETCH_BYTE (same_at_end - 1) == buffer[bufpos - 1]) |
3d0387c0 | 3396 | same_at_end--, bufpos--; |
727a0b4a | 3397 | |
3d0387c0 | 3398 | /* If we found a discrepancy, stop the scan. |
8e6208c5 | 3399 | Otherwise loop around and scan the preceding bufferful. */ |
3d0387c0 | 3400 | if (bufpos != 0) |
727a0b4a RS |
3401 | { |
3402 | /* If this discrepancy is because of code conversion, | |
3403 | we cannot use this method; giveup and try the other. */ | |
3404 | if (same_at_end > same_at_start | |
3405 | && FETCH_BYTE (same_at_end - 1) >= 0200 | |
71312b68 | 3406 | && ! NILP (current_buffer->enable_multibyte_characters) |
6ad0beeb KH |
3407 | && (CODING_REQUIRE_DECODING (&coding) |
3408 | || CODING_REQUIRE_DETECTION (&coding))) | |
727a0b4a RS |
3409 | giveup_match_end = 1; |
3410 | break; | |
3411 | } | |
3d0387c0 RS |
3412 | } |
3413 | immediate_quit = 0; | |
9c28748f | 3414 | |
727a0b4a RS |
3415 | if (! giveup_match_end) |
3416 | { | |
3417 | /* We win! We can handle REPLACE the optimized way. */ | |
9c28748f | 3418 | |
71312b68 RS |
3419 | /* Extends the end of non-matching text area to multibyte |
3420 | character boundary. */ | |
3421 | if (! NILP (current_buffer->enable_multibyte_characters)) | |
3422 | while (same_at_end < ZV && ! CHAR_HEAD_P (POS_ADDR (same_at_end))) | |
3423 | same_at_end++; | |
3424 | ||
727a0b4a RS |
3425 | /* Don't try to reuse the same piece of text twice. */ |
3426 | overlap = same_at_start - BEGV - (same_at_end + st.st_size - ZV); | |
3427 | if (overlap > 0) | |
3428 | same_at_end += overlap; | |
9c28748f | 3429 | |
727a0b4a RS |
3430 | /* Arrange to read only the nonmatching middle part of the file. */ |
3431 | XSETFASTINT (beg, XINT (beg) + (same_at_start - BEGV)); | |
3432 | XSETFASTINT (end, XINT (end) - (ZV - same_at_end)); | |
3dbcf3f6 | 3433 | |
727a0b4a RS |
3434 | del_range_1 (same_at_start, same_at_end, 0); |
3435 | /* Insert from the file at the proper position. */ | |
3436 | SET_PT (same_at_start); | |
3437 | ||
3438 | /* If display currently starts at beginning of line, | |
3439 | keep it that way. */ | |
3440 | if (XBUFFER (XWINDOW (selected_window)->buffer) == current_buffer) | |
3441 | XWINDOW (selected_window)->start_at_line_beg = Fbolp (); | |
3442 | ||
3443 | replace_handled = 1; | |
3444 | } | |
3dbcf3f6 RS |
3445 | } |
3446 | ||
3447 | /* If requested, replace the accessible part of the buffer | |
3448 | with the file contents. Avoid replacing text at the | |
3449 | beginning or end of the buffer that matches the file contents; | |
3450 | that preserves markers pointing to the unchanged parts. | |
3451 | ||
3452 | Here we implement this feature for the case where code conversion | |
3453 | is needed, in a simple way that needs a lot of memory. | |
3454 | The preceding if-statement handles the case of no conversion | |
3455 | in a more optimized way. */ | |
727a0b4a | 3456 | if (!NILP (replace) && ! replace_handled) |
3dbcf3f6 RS |
3457 | { |
3458 | int same_at_start = BEGV; | |
3459 | int same_at_end = ZV; | |
3460 | int overlap; | |
3461 | int bufpos; | |
3462 | /* Make sure that the gap is large enough. */ | |
3463 | int bufsize = 2 * st.st_size; | |
b00ca0d7 | 3464 | unsigned char *conversion_buffer = (unsigned char *) xmalloc (bufsize); |
3dbcf3f6 RS |
3465 | |
3466 | /* First read the whole file, performing code conversion into | |
3467 | CONVERSION_BUFFER. */ | |
3468 | ||
727a0b4a RS |
3469 | if (lseek (fd, XINT (beg), 0) < 0) |
3470 | { | |
3471 | free (conversion_buffer); | |
3472 | report_file_error ("Setting file position", | |
b1d1b865 | 3473 | Fcons (orig_filename, Qnil)); |
727a0b4a RS |
3474 | } |
3475 | ||
3dbcf3f6 RS |
3476 | total = st.st_size; /* Total bytes in the file. */ |
3477 | how_much = 0; /* Bytes read from file so far. */ | |
3478 | inserted = 0; /* Bytes put into CONVERSION_BUFFER so far. */ | |
3479 | unprocessed = 0; /* Bytes not processed in previous loop. */ | |
3480 | ||
3481 | while (how_much < total) | |
3482 | { | |
3483 | /* try is reserved in some compilers (Microsoft C) */ | |
3484 | int trytry = min (total - how_much, READ_BUF_SIZE - unprocessed); | |
3485 | char *destination = read_buf + unprocessed; | |
3486 | int this; | |
3487 | ||
3488 | /* Allow quitting out of the actual I/O. */ | |
3489 | immediate_quit = 1; | |
3490 | QUIT; | |
3491 | this = read (fd, destination, trytry); | |
3492 | immediate_quit = 0; | |
3493 | ||
3494 | if (this < 0 || this + unprocessed == 0) | |
3495 | { | |
3496 | how_much = this; | |
3497 | break; | |
3498 | } | |
3499 | ||
3500 | how_much += this; | |
3501 | ||
6ad0beeb KH |
3502 | if (CODING_REQUIRE_DECODING (&coding) |
3503 | || CODING_REQUIRE_DETECTION (&coding)) | |
3dbcf3f6 RS |
3504 | { |
3505 | int require, produced, consumed; | |
3506 | ||
3507 | this += unprocessed; | |
3508 | ||
3509 | /* If we are using more space than estimated, | |
3510 | make CONVERSION_BUFFER bigger. */ | |
3511 | require = decoding_buffer_size (&coding, this); | |
3512 | if (inserted + require + 2 * (total - how_much) > bufsize) | |
3513 | { | |
3514 | bufsize = inserted + require + 2 * (total - how_much); | |
92cf1086 | 3515 | conversion_buffer = (unsigned char *) xrealloc (conversion_buffer, bufsize); |
3dbcf3f6 RS |
3516 | } |
3517 | ||
3518 | /* Convert this batch with results in CONVERSION_BUFFER. */ | |
3519 | if (how_much >= total) /* This is the last block. */ | |
3520 | coding.last_block = 1; | |
3521 | produced = decode_coding (&coding, read_buf, | |
3522 | conversion_buffer + inserted, | |
3523 | this, bufsize - inserted, | |
3524 | &consumed); | |
3525 | ||
3526 | /* Save for next iteration whatever we didn't convert. */ | |
3527 | unprocessed = this - consumed; | |
3528 | bcopy (read_buf + consumed, read_buf, unprocessed); | |
3529 | this = produced; | |
3530 | } | |
3531 | ||
3532 | inserted += this; | |
3533 | } | |
3534 | ||
3535 | /* At this point, INSERTED is how many characters | |
3536 | are present in CONVERSION_BUFFER. | |
3537 | HOW_MUCH should equal TOTAL, | |
3538 | or should be <= 0 if we couldn't read the file. */ | |
3539 | ||
3540 | if (how_much < 0) | |
3541 | { | |
3542 | free (conversion_buffer); | |
3543 | ||
3544 | if (how_much == -1) | |
3545 | error ("IO error reading %s: %s", | |
b1d1b865 | 3546 | XSTRING (orig_filename)->data, strerror (errno)); |
3dbcf3f6 RS |
3547 | else if (how_much == -2) |
3548 | error ("maximum buffer size exceeded"); | |
3549 | } | |
3550 | ||
3551 | /* Compare the beginning of the converted file | |
3552 | with the buffer text. */ | |
3553 | ||
3554 | bufpos = 0; | |
3555 | while (bufpos < inserted && same_at_start < same_at_end | |
3556 | && FETCH_BYTE (same_at_start) == conversion_buffer[bufpos]) | |
3557 | same_at_start++, bufpos++; | |
3558 | ||
3559 | /* If the file matches the buffer completely, | |
3560 | there's no need to replace anything. */ | |
3561 | ||
3562 | if (bufpos == inserted) | |
3563 | { | |
3564 | free (conversion_buffer); | |
3565 | close (fd); | |
3566 | specpdl_ptr--; | |
3567 | /* Truncate the buffer to the size of the file. */ | |
3568 | del_range_1 (same_at_start, same_at_end, 0); | |
3569 | goto handled; | |
3570 | } | |
3571 | ||
3572 | /* Scan this bufferful from the end, comparing with | |
3573 | the Emacs buffer. */ | |
3574 | bufpos = inserted; | |
3575 | ||
3576 | /* Compare with same_at_start to avoid counting some buffer text | |
3577 | as matching both at the file's beginning and at the end. */ | |
3578 | while (bufpos > 0 && same_at_end > same_at_start | |
3579 | && FETCH_BYTE (same_at_end - 1) == conversion_buffer[bufpos - 1]) | |
3580 | same_at_end--, bufpos--; | |
3581 | ||
3582 | /* Don't try to reuse the same piece of text twice. */ | |
3583 | overlap = same_at_start - BEGV - (same_at_end + inserted - ZV); | |
3584 | if (overlap > 0) | |
3585 | same_at_end += overlap; | |
3586 | ||
727a0b4a RS |
3587 | /* If display currently starts at beginning of line, |
3588 | keep it that way. */ | |
3589 | if (XBUFFER (XWINDOW (selected_window)->buffer) == current_buffer) | |
3590 | XWINDOW (selected_window)->start_at_line_beg = Fbolp (); | |
3591 | ||
3dbcf3f6 RS |
3592 | /* Replace the chars that we need to replace, |
3593 | and update INSERTED to equal the number of bytes | |
3594 | we are taking from the file. */ | |
3595 | inserted -= (Z - same_at_end) + (same_at_start - BEG); | |
3596 | move_gap (same_at_start); | |
3597 | del_range_1 (same_at_start, same_at_end, 0); | |
0342d8c5 RS |
3598 | SET_PT (same_at_start); |
3599 | insert_1 (conversion_buffer + same_at_start - BEG, inserted, 0, 0); | |
3dbcf3f6 RS |
3600 | |
3601 | free (conversion_buffer); | |
3602 | close (fd); | |
3603 | specpdl_ptr--; | |
3604 | ||
3dbcf3f6 | 3605 | goto handled; |
3d0387c0 RS |
3606 | } |
3607 | ||
d4b8687b RS |
3608 | if (! not_regular) |
3609 | { | |
3610 | register Lisp_Object temp; | |
7fded690 | 3611 | |
d4b8687b | 3612 | total = XINT (end) - XINT (beg); |
570d7624 | 3613 | |
d4b8687b RS |
3614 | /* Make sure point-max won't overflow after this insertion. */ |
3615 | XSETINT (temp, total); | |
3616 | if (total != XINT (temp)) | |
3617 | error ("Maximum buffer size exceeded"); | |
3618 | } | |
3619 | else | |
3620 | /* For a special file, all we can do is guess. */ | |
3621 | total = READ_BUF_SIZE; | |
570d7624 | 3622 | |
57d8d468 | 3623 | if (NILP (visit) && total > 0) |
6c478ee2 | 3624 | prepare_to_modify_buffer (PT, PT, NULL); |
570d7624 | 3625 | |
7fe52289 | 3626 | move_gap (PT); |
7fded690 JB |
3627 | if (GAP_SIZE < total) |
3628 | make_gap (total - GAP_SIZE); | |
3629 | ||
a1d2b64a | 3630 | if (XINT (beg) != 0 || !NILP (replace)) |
7fded690 JB |
3631 | { |
3632 | if (lseek (fd, XINT (beg), 0) < 0) | |
b1d1b865 RS |
3633 | report_file_error ("Setting file position", |
3634 | Fcons (orig_filename, Qnil)); | |
7fded690 JB |
3635 | } |
3636 | ||
6fdaa9a0 KH |
3637 | /* In the following loop, HOW_MUCH contains the total bytes read so |
3638 | far. Before exiting the loop, it is set to -1 if I/O error | |
3639 | occurs, set to -2 if the maximum buffer size is exceeded. */ | |
a1d2b64a | 3640 | how_much = 0; |
6fdaa9a0 KH |
3641 | /* Total bytes inserted. */ |
3642 | inserted = 0; | |
3643 | /* Bytes not processed in the previous loop because short gap size. */ | |
3644 | unprocessed = 0; | |
3645 | while (how_much < total) | |
570d7624 | 3646 | { |
5e570b75 | 3647 | /* try is reserved in some compilers (Microsoft C) */ |
6fdaa9a0 | 3648 | int trytry = min (total - how_much, READ_BUF_SIZE - unprocessed); |
6ad0beeb KH |
3649 | char *destination = (! (CODING_REQUIRE_DECODING (&coding) |
3650 | || CODING_REQUIRE_DETECTION (&coding)) | |
70ec4328 KH |
3651 | ? (char *) (POS_ADDR (PT + inserted - 1) + 1) |
3652 | : read_buf + unprocessed); | |
b5148e85 RS |
3653 | int this; |
3654 | ||
3655 | /* Allow quitting out of the actual I/O. */ | |
3656 | immediate_quit = 1; | |
3657 | QUIT; | |
6fdaa9a0 | 3658 | this = read (fd, destination, trytry); |
b5148e85 | 3659 | immediate_quit = 0; |
570d7624 | 3660 | |
6fdaa9a0 | 3661 | if (this < 0 || this + unprocessed == 0) |
570d7624 JB |
3662 | { |
3663 | how_much = this; | |
3664 | break; | |
3665 | } | |
3666 | ||
d4b8687b RS |
3667 | /* For a regular file, where TOTAL is the real size, |
3668 | count HOW_MUCH to compare with it. | |
3669 | For a special file, where TOTAL is just a buffer size, | |
3670 | so don't bother counting in HOW_MUCH. | |
3671 | (INSERTED is where we count the number of characters inserted.) */ | |
3672 | if (! not_regular) | |
3673 | how_much += this; | |
6fdaa9a0 | 3674 | |
6ad0beeb KH |
3675 | if (CODING_REQUIRE_DECODING (&coding) |
3676 | || CODING_REQUIRE_DETECTION (&coding)) | |
6fdaa9a0 KH |
3677 | { |
3678 | int require, produced, consumed; | |
3679 | ||
3680 | this += unprocessed; | |
3681 | /* Make sure that the gap is large enough. */ | |
3682 | require = decoding_buffer_size (&coding, this); | |
3683 | if (GAP_SIZE < require) | |
3684 | make_gap (require - GAP_SIZE); | |
d4b8687b RS |
3685 | |
3686 | if (! not_regular) | |
3687 | { | |
3688 | if (how_much >= total) /* This is the last block. */ | |
3689 | coding.last_block = 1; | |
3690 | } | |
3691 | else | |
3692 | { | |
3693 | /* If we encounter EOF, say it is the last block. (The | |
3694 | data this will apply to is the UNPROCESSED characters | |
3695 | carried over from the last batch.) */ | |
3696 | if (this == 0) | |
3697 | coding.last_block = 1; | |
3698 | } | |
3699 | ||
6fdaa9a0 KH |
3700 | produced = decode_coding (&coding, read_buf, |
3701 | POS_ADDR (PT + inserted - 1) + 1, | |
3702 | this, GAP_SIZE, &consumed); | |
3703 | if (produced > 0) | |
3704 | { | |
3705 | Lisp_Object temp; | |
3706 | ||
3707 | XSET (temp, Lisp_Int, Z + produced); | |
3708 | if (Z + produced != XINT (temp)) | |
3709 | { | |
3710 | how_much = -2; | |
3711 | break; | |
3712 | } | |
3713 | } | |
3714 | unprocessed = this - consumed; | |
3715 | bcopy (read_buf + consumed, read_buf, unprocessed); | |
3716 | this = produced; | |
3717 | } | |
3718 | ||
570d7624 JB |
3719 | GPT += this; |
3720 | GAP_SIZE -= this; | |
3721 | ZV += this; | |
3722 | Z += this; | |
6fdaa9a0 KH |
3723 | if (GAP_SIZE > 0) |
3724 | /* Put an anchor to ensure multi-byte form ends at gap. */ | |
3725 | *GPT_ADDR = 0; | |
570d7624 JB |
3726 | inserted += this; |
3727 | } | |
3728 | ||
04e6f79c GV |
3729 | |
3730 | #ifdef DOS_NT | |
3731 | /* Use the conversion type to determine buffer-file-type | |
3732 | (find-buffer-file-type is now used to help determine the | |
3733 | conversion). */ | |
2f9d985f RS |
3734 | if (coding.eol_type != CODING_EOL_UNDECIDED |
3735 | && coding.eol_type != CODING_EOL_LF) | |
04e6f79c GV |
3736 | current_buffer->buffer_file_type = Qnil; |
3737 | else | |
3738 | current_buffer->buffer_file_type = Qt; | |
3739 | #endif | |
3740 | ||
6fdaa9a0 KH |
3741 | /* We don't have to consider file type of MSDOS because all files |
3742 | are read as binary and end-of-line format has already been | |
3743 | decoded appropriately. */ | |
3744 | #if 0 | |
5e570b75 | 3745 | #ifdef DOS_NT |
4c3c22f3 RS |
3746 | /* Demacs 1.1.1 91/10/16 HIRANO Satoshi, MW July 1993 */ |
3747 | /* Determine file type from name and remove LFs from CR-LFs if the file | |
3748 | is deemed to be a text file. */ | |
3749 | { | |
bf162ea8 | 3750 | current_buffer->buffer_file_type |
b1d1b865 | 3751 | = call1 (Qfind_buffer_file_type, orig_filename); |
bf162ea8 | 3752 | if (NILP (current_buffer->buffer_file_type)) |
4c3c22f3 | 3753 | { |
a1d2b64a | 3754 | int reduced_size |
6fdaa9a0 | 3755 | = inserted - crlf_to_lf (inserted, POS_ADDR (PT - 1) + 1); |
4c3c22f3 RS |
3756 | ZV -= reduced_size; |
3757 | Z -= reduced_size; | |
3758 | GPT -= reduced_size; | |
3759 | GAP_SIZE += reduced_size; | |
3760 | inserted -= reduced_size; | |
3761 | } | |
3762 | } | |
5e570b75 | 3763 | #endif /* DOS_NT */ |
6fdaa9a0 | 3764 | #endif /* 0 */ |
4c3c22f3 | 3765 | |
570d7624 | 3766 | if (inserted > 0) |
7d8451f1 | 3767 | { |
7fe52289 | 3768 | record_insert (PT, inserted); |
8d4e077b JA |
3769 | |
3770 | /* Only defined if Emacs is compiled with USE_TEXT_PROPERTIES */ | |
7fe52289 | 3771 | offset_intervals (current_buffer, PT, inserted); |
7d8451f1 RS |
3772 | MODIFF++; |
3773 | } | |
570d7624 JB |
3774 | |
3775 | close (fd); | |
3776 | ||
a1d2b64a RS |
3777 | /* Discard the unwind protect for closing the file. */ |
3778 | specpdl_ptr--; | |
570d7624 | 3779 | |
6fdaa9a0 | 3780 | if (how_much == -1) |
570d7624 | 3781 | error ("IO error reading %s: %s", |
b1d1b865 | 3782 | XSTRING (orig_filename)->data, strerror (errno)); |
6fdaa9a0 KH |
3783 | else if (how_much == -2) |
3784 | error ("maximum buffer size exceeded"); | |
570d7624 JB |
3785 | |
3786 | notfound: | |
32f4334d | 3787 | handled: |
570d7624 | 3788 | |
265a9e55 | 3789 | if (!NILP (visit)) |
570d7624 | 3790 | { |
cfadd376 RS |
3791 | if (!EQ (current_buffer->undo_list, Qt)) |
3792 | current_buffer->undo_list = Qnil; | |
570d7624 JB |
3793 | #ifdef APOLLO |
3794 | stat (XSTRING (filename)->data, &st); | |
3795 | #endif | |
62bcf009 | 3796 | |
a7e82472 RS |
3797 | if (NILP (handler)) |
3798 | { | |
3799 | current_buffer->modtime = st.st_mtime; | |
b1d1b865 | 3800 | current_buffer->filename = orig_filename; |
a7e82472 | 3801 | } |
62bcf009 | 3802 | |
95385625 | 3803 | SAVE_MODIFF = MODIFF; |
570d7624 | 3804 | current_buffer->auto_save_modified = MODIFF; |
2acfd7ae | 3805 | XSETFASTINT (current_buffer->save_length, Z - BEG); |
570d7624 | 3806 | #ifdef CLASH_DETECTION |
32f4334d RS |
3807 | if (NILP (handler)) |
3808 | { | |
f471f4c2 RS |
3809 | if (!NILP (current_buffer->file_truename)) |
3810 | unlock_file (current_buffer->file_truename); | |
32f4334d RS |
3811 | unlock_file (filename); |
3812 | } | |
570d7624 | 3813 | #endif /* CLASH_DETECTION */ |
330bfe57 RS |
3814 | if (not_regular) |
3815 | Fsignal (Qfile_error, | |
3816 | Fcons (build_string ("not a regular file"), | |
b1d1b865 | 3817 | Fcons (orig_filename, Qnil))); |
330bfe57 | 3818 | |
570d7624 | 3819 | /* If visiting nonexistent file, return nil. */ |
32f4334d | 3820 | if (current_buffer->modtime == -1) |
b1d1b865 | 3821 | report_file_error ("Opening input file", Fcons (orig_filename, Qnil)); |
570d7624 JB |
3822 | } |
3823 | ||
0d420e88 BG |
3824 | /* Decode file format */ |
3825 | if (inserted > 0) | |
3826 | { | |
199607e4 | 3827 | insval = call3 (Qformat_decode, |
0d420e88 BG |
3828 | Qnil, make_number (inserted), visit); |
3829 | CHECK_NUMBER (insval, 0); | |
3830 | inserted = XFASTINT (insval); | |
3831 | } | |
3832 | ||
0342d8c5 RS |
3833 | /* Call after-change hooks for the inserted text, aside from the case |
3834 | of normal visiting (not with REPLACE), which is done in a new buffer | |
3835 | "before" the buffer is changed. */ | |
3836 | if (inserted > 0 && total > 0 | |
3837 | && (NILP (visit) || !NILP (replace))) | |
7fe52289 | 3838 | signal_after_change (PT, 0, inserted); |
199607e4 | 3839 | |
d6a3cc15 RS |
3840 | if (inserted > 0) |
3841 | { | |
3842 | p = Vafter_insert_file_functions; | |
6fdaa9a0 KH |
3843 | if (!NILP (coding.post_read_conversion)) |
3844 | p = Fcons (coding.post_read_conversion, p); | |
3845 | ||
d6a3cc15 RS |
3846 | while (!NILP (p)) |
3847 | { | |
3848 | insval = call1 (Fcar (p), make_number (inserted)); | |
3849 | if (!NILP (insval)) | |
3850 | { | |
3851 | CHECK_NUMBER (insval, 0); | |
3852 | inserted = XFASTINT (insval); | |
3853 | } | |
3854 | QUIT; | |
3855 | p = Fcdr (p); | |
3856 | } | |
3857 | } | |
3858 | ||
a1d2b64a | 3859 | if (NILP (val)) |
b1d1b865 | 3860 | val = Fcons (orig_filename, |
a1d2b64a RS |
3861 | Fcons (make_number (inserted), |
3862 | Qnil)); | |
3863 | ||
3864 | RETURN_UNGCPRO (unbind_to (count, val)); | |
570d7624 | 3865 | } |
7fded690 | 3866 | \f |
d6a3cc15 | 3867 | static Lisp_Object build_annotations (); |
2e34157c | 3868 | extern Lisp_Object Ffile_locked_p (); |
d6a3cc15 | 3869 | |
6fc6f94b | 3870 | /* If build_annotations switched buffers, switch back to BUF. |
6fdaa9a0 KH |
3871 | Kill the temporary buffer that was selected in the meantime. |
3872 | ||
3873 | Since this kill only the last temporary buffer, some buffers remain | |
3874 | not killed if build_annotations switched buffers more than once. | |
3875 | -- K.Handa */ | |
6fc6f94b | 3876 | |
199607e4 | 3877 | static Lisp_Object |
6fc6f94b RS |
3878 | build_annotations_unwind (buf) |
3879 | Lisp_Object buf; | |
3880 | { | |
3881 | Lisp_Object tembuf; | |
3882 | ||
3883 | if (XBUFFER (buf) == current_buffer) | |
3884 | return Qnil; | |
3885 | tembuf = Fcurrent_buffer (); | |
3886 | Fset_buffer (buf); | |
3887 | Fkill_buffer (tembuf); | |
3888 | return Qnil; | |
3889 | } | |
3890 | ||
115af127 KH |
3891 | DEFUN ("write-region", Fwrite_region, Swrite_region, 3, 6, |
3892 | "r\nFWrite region to file: ", | |
570d7624 JB |
3893 | "Write current region into specified file.\n\ |
3894 | When called from a program, takes three arguments:\n\ | |
3895 | START, END and FILENAME. START and END are buffer positions.\n\ | |
3896 | Optional fourth argument APPEND if non-nil means\n\ | |
3897 | append to existing file contents (if any).\n\ | |
3898 | Optional fifth argument VISIT if t means\n\ | |
3899 | set the last-save-file-modtime of buffer to this file's modtime\n\ | |
3900 | and mark buffer not modified.\n\ | |
3b7792ed RS |
3901 | If VISIT is a string, it is a second file name;\n\ |
3902 | the output goes to FILENAME, but the buffer is marked as visiting VISIT.\n\ | |
3903 | VISIT is also the file name to lock and unlock for clash detection.\n\ | |
1d386d28 RS |
3904 | If VISIT is neither t nor nil nor a string,\n\ |
3905 | that means do not print the \"Wrote file\" message.\n\ | |
7204a979 | 3906 | The optional sixth arg LOCKNAME, if non-nil, specifies the name to\n\ |
8b68aae7 | 3907 | use for locking and unlocking, overriding FILENAME and VISIT.\n\ |
570d7624 | 3908 | Kludgy feature: if START is a string, then that string is written\n\ |
cdfb0f1d | 3909 | to the file, instead of any buffer contents, and END is ignored.") |
115af127 | 3910 | (start, end, filename, append, visit, lockname) |
7204a979 | 3911 | Lisp_Object start, end, filename, append, visit, lockname; |
570d7624 JB |
3912 | { |
3913 | register int desc; | |
3914 | int failure; | |
3915 | int save_errno; | |
3916 | unsigned char *fn; | |
3917 | struct stat st; | |
c975dd7a | 3918 | int tem; |
570d7624 | 3919 | int count = specpdl_ptr - specpdl; |
6fc6f94b | 3920 | int count1; |
570d7624 | 3921 | #ifdef VMS |
5e570b75 | 3922 | unsigned char *fname = 0; /* If non-0, original filename (must rename) */ |
570d7624 | 3923 | #endif /* VMS */ |
3eac9910 | 3924 | Lisp_Object handler; |
4ad827c5 | 3925 | Lisp_Object visit_file; |
d6a3cc15 | 3926 | Lisp_Object annotations; |
b1d1b865 | 3927 | Lisp_Object encoded_filename; |
d6a3cc15 | 3928 | int visiting, quietly; |
7204a979 | 3929 | struct gcpro gcpro1, gcpro2, gcpro3, gcpro4, gcpro5; |
6fc6f94b | 3930 | struct buffer *given_buffer; |
5e570b75 | 3931 | #ifdef DOS_NT |
fa228724 | 3932 | int buffer_file_type = O_BINARY; |
5e570b75 | 3933 | #endif /* DOS_NT */ |
6fdaa9a0 | 3934 | struct coding_system coding; |
570d7624 | 3935 | |
95385625 RS |
3936 | if (current_buffer->base_buffer && ! NILP (visit)) |
3937 | error ("Cannot do file visiting in an indirect buffer"); | |
3938 | ||
561cb8e1 | 3939 | if (!NILP (start) && !STRINGP (start)) |
570d7624 JB |
3940 | validate_region (&start, &end); |
3941 | ||
115af127 | 3942 | GCPRO4 (start, filename, visit, lockname); |
cdfb0f1d | 3943 | |
b1d1b865 | 3944 | /* Decide the coding-system to encode the data with. */ |
cdfb0f1d KH |
3945 | { |
3946 | Lisp_Object val; | |
3947 | ||
cbc64b2a | 3948 | if (auto_saving) |
cdfb0f1d | 3949 | val = Qnil; |
cdfb0f1d KH |
3950 | else if (!NILP (Vcoding_system_for_write)) |
3951 | val = Vcoding_system_for_write; | |
70ec4328 | 3952 | else if (NILP (current_buffer->enable_multibyte_characters)) |
450c1a67 KH |
3953 | { |
3954 | /* If the variable `buffer-file-coding-system' is set locally, | |
3955 | it means that the file was read with some kind of code | |
3956 | conversion or the varialbe is explicitely set by users. We | |
3957 | had better write it out with the same coding system even if | |
3958 | `enable-multibyte-characters' is nil. | |
3959 | ||
3960 | If is is not set locally, we anyway have to convert EOL | |
3961 | format if the default value of `buffer-file-coding-system' | |
3962 | tells that it is not Unix-like (LF only) format. */ | |
3963 | val = current_buffer->buffer_file_coding_system; | |
3964 | if (NILP (Flocal_variable_p (Qbuffer_file_coding_system, Qnil))) | |
3965 | { | |
3966 | struct coding_system coding_temp; | |
3967 | ||
3968 | setup_coding_system (Fcheck_coding_system (val), &coding_temp); | |
3969 | if (coding_temp.eol_type == CODING_EOL_CRLF | |
3970 | || coding_temp.eol_type == CODING_EOL_CR) | |
3971 | { | |
3972 | setup_coding_system (Qemacs_mule, &coding); | |
3973 | coding.eol_type = coding_temp.eol_type; | |
3974 | goto done_setup_coding; | |
3975 | } | |
3976 | val = Qnil; | |
3977 | } | |
3978 | } | |
cdfb0f1d KH |
3979 | else |
3980 | { | |
3981 | Lisp_Object args[7], coding_systems; | |
3982 | ||
3983 | args[0] = Qwrite_region, args[1] = start, args[2] = end, | |
3984 | args[3] = filename, args[4] = append, args[5] = visit, | |
3985 | args[6] = lockname; | |
789f1700 | 3986 | coding_systems = Ffind_operation_coding_system (7, args); |
70ec4328 | 3987 | val = (CONSP (coding_systems) && !NILP (XCONS (coding_systems)->cdr) |
cdfb0f1d | 3988 | ? XCONS (coding_systems)->cdr |
115af127 | 3989 | : current_buffer->buffer_file_coding_system); |
cdfb0f1d KH |
3990 | } |
3991 | setup_coding_system (Fcheck_coding_system (val), &coding); | |
450c1a67 KH |
3992 | |
3993 | done_setup_coding: | |
cdfb0f1d KH |
3994 | if (!STRINGP (start) && !NILP (current_buffer->selective_display)) |
3995 | coding.selective = 1; | |
cdfb0f1d KH |
3996 | } |
3997 | ||
570d7624 | 3998 | filename = Fexpand_file_name (filename, Qnil); |
561cb8e1 | 3999 | if (STRINGP (visit)) |
e5176bae | 4000 | visit_file = Fexpand_file_name (visit, Qnil); |
4ad827c5 RS |
4001 | else |
4002 | visit_file = filename; | |
1a04498e | 4003 | UNGCPRO; |
4ad827c5 | 4004 | |
561cb8e1 | 4005 | visiting = (EQ (visit, Qt) || STRINGP (visit)); |
d6a3cc15 RS |
4006 | quietly = !NILP (visit); |
4007 | ||
4008 | annotations = Qnil; | |
4009 | ||
7204a979 RS |
4010 | if (NILP (lockname)) |
4011 | lockname = visit_file; | |
4012 | ||
4013 | GCPRO5 (start, filename, annotations, visit_file, lockname); | |
570d7624 | 4014 | |
32f4334d RS |
4015 | /* If the file name has special constructs in it, |
4016 | call the corresponding file handler. */ | |
49307295 | 4017 | handler = Ffind_file_name_handler (filename, Qwrite_region); |
b56ad927 | 4018 | /* If FILENAME has no handler, see if VISIT has one. */ |
93c30b5f | 4019 | if (NILP (handler) && STRINGP (visit)) |
199607e4 | 4020 | handler = Ffind_file_name_handler (visit, Qwrite_region); |
3eac9910 | 4021 | |
32f4334d RS |
4022 | if (!NILP (handler)) |
4023 | { | |
32f4334d | 4024 | Lisp_Object val; |
51cf6d37 RS |
4025 | val = call6 (handler, Qwrite_region, start, end, |
4026 | filename, append, visit); | |
32f4334d | 4027 | |
d6a3cc15 | 4028 | if (visiting) |
32f4334d | 4029 | { |
95385625 | 4030 | SAVE_MODIFF = MODIFF; |
2acfd7ae | 4031 | XSETFASTINT (current_buffer->save_length, Z - BEG); |
3b7792ed | 4032 | current_buffer->filename = visit_file; |
32f4334d | 4033 | } |
09121adc | 4034 | UNGCPRO; |
32f4334d RS |
4035 | return val; |
4036 | } | |
4037 | ||
561cb8e1 RS |
4038 | /* Special kludge to simplify auto-saving. */ |
4039 | if (NILP (start)) | |
4040 | { | |
2acfd7ae KH |
4041 | XSETFASTINT (start, BEG); |
4042 | XSETFASTINT (end, Z); | |
561cb8e1 RS |
4043 | } |
4044 | ||
6fc6f94b RS |
4045 | record_unwind_protect (build_annotations_unwind, Fcurrent_buffer ()); |
4046 | count1 = specpdl_ptr - specpdl; | |
4047 | ||
4048 | given_buffer = current_buffer; | |
6fdaa9a0 | 4049 | annotations = build_annotations (start, end, coding.pre_write_conversion); |
6fc6f94b RS |
4050 | if (current_buffer != given_buffer) |
4051 | { | |
3cf29f61 RS |
4052 | XSETFASTINT (start, BEGV); |
4053 | XSETFASTINT (end, ZV); | |
6fc6f94b | 4054 | } |
d6a3cc15 | 4055 | |
570d7624 JB |
4056 | #ifdef CLASH_DETECTION |
4057 | if (!auto_saving) | |
84f6296a | 4058 | { |
a9171faa | 4059 | #if 0 /* This causes trouble for GNUS. */ |
84f6296a RS |
4060 | /* If we've locked this file for some other buffer, |
4061 | query before proceeding. */ | |
4062 | if (!visiting && EQ (Ffile_locked_p (lockname), Qt)) | |
bffd00b0 | 4063 | call2 (intern ("ask-user-about-lock"), filename, Vuser_login_name); |
a9171faa | 4064 | #endif |
84f6296a RS |
4065 | |
4066 | lock_file (lockname); | |
4067 | } | |
570d7624 JB |
4068 | #endif /* CLASH_DETECTION */ |
4069 | ||
b1d1b865 RS |
4070 | encoded_filename = ENCODE_FILE (filename); |
4071 | ||
4072 | fn = XSTRING (encoded_filename)->data; | |
570d7624 | 4073 | desc = -1; |
265a9e55 | 4074 | if (!NILP (append)) |
5e570b75 | 4075 | #ifdef DOS_NT |
4c3c22f3 | 4076 | desc = open (fn, O_WRONLY | buffer_file_type); |
5e570b75 | 4077 | #else /* not DOS_NT */ |
570d7624 | 4078 | desc = open (fn, O_WRONLY); |
5e570b75 | 4079 | #endif /* not DOS_NT */ |
570d7624 | 4080 | |
b1d1b865 | 4081 | if (desc < 0 && (NILP (append) || errno == ENOENT)) |
570d7624 | 4082 | #ifdef VMS |
5e570b75 | 4083 | if (auto_saving) /* Overwrite any previous version of autosave file */ |
570d7624 | 4084 | { |
5e570b75 | 4085 | vms_truncate (fn); /* if fn exists, truncate to zero length */ |
570d7624 JB |
4086 | desc = open (fn, O_RDWR); |
4087 | if (desc < 0) | |
561cb8e1 | 4088 | desc = creat_copy_attrs (STRINGP (current_buffer->filename) |
b72dea2a JB |
4089 | ? XSTRING (current_buffer->filename)->data : 0, |
4090 | fn); | |
570d7624 | 4091 | } |
5e570b75 | 4092 | else /* Write to temporary name and rename if no errors */ |
570d7624 JB |
4093 | { |
4094 | Lisp_Object temp_name; | |
4095 | temp_name = Ffile_name_directory (filename); | |
4096 | ||
265a9e55 | 4097 | if (!NILP (temp_name)) |
570d7624 JB |
4098 | { |
4099 | temp_name = Fmake_temp_name (concat2 (temp_name, | |
4100 | build_string ("$$SAVE$$"))); | |
4101 | fname = XSTRING (filename)->data; | |
4102 | fn = XSTRING (temp_name)->data; | |
4103 | desc = creat_copy_attrs (fname, fn); | |
4104 | if (desc < 0) | |
4105 | { | |
4106 | /* If we can't open the temporary file, try creating a new | |
4107 | version of the original file. VMS "creat" creates a | |
4108 | new version rather than truncating an existing file. */ | |
4109 | fn = fname; | |
4110 | fname = 0; | |
4111 | desc = creat (fn, 0666); | |
4112 | #if 0 /* This can clobber an existing file and fail to replace it, | |
4113 | if the user runs out of space. */ | |
4114 | if (desc < 0) | |
4115 | { | |
4116 | /* We can't make a new version; | |
4117 | try to truncate and rewrite existing version if any. */ | |
4118 | vms_truncate (fn); | |
4119 | desc = open (fn, O_RDWR); | |
4120 | } | |
4121 | #endif | |
4122 | } | |
4123 | } | |
4124 | else | |
4125 | desc = creat (fn, 0666); | |
4126 | } | |
4127 | #else /* not VMS */ | |
5e570b75 | 4128 | #ifdef DOS_NT |
199607e4 RS |
4129 | desc = open (fn, |
4130 | O_WRONLY | O_TRUNC | O_CREAT | buffer_file_type, | |
4c3c22f3 | 4131 | S_IREAD | S_IWRITE); |
5e570b75 | 4132 | #else /* not DOS_NT */ |
570d7624 | 4133 | desc = creat (fn, auto_saving ? auto_save_mode_bits : 0666); |
5e570b75 | 4134 | #endif /* not DOS_NT */ |
570d7624 JB |
4135 | #endif /* not VMS */ |
4136 | ||
09121adc RS |
4137 | UNGCPRO; |
4138 | ||
570d7624 JB |
4139 | if (desc < 0) |
4140 | { | |
4141 | #ifdef CLASH_DETECTION | |
4142 | save_errno = errno; | |
7204a979 | 4143 | if (!auto_saving) unlock_file (lockname); |
570d7624 JB |
4144 | errno = save_errno; |
4145 | #endif /* CLASH_DETECTION */ | |
4146 | report_file_error ("Opening output file", Fcons (filename, Qnil)); | |
4147 | } | |
4148 | ||
4149 | record_unwind_protect (close_file_unwind, make_number (desc)); | |
4150 | ||
265a9e55 | 4151 | if (!NILP (append)) |
570d7624 JB |
4152 | if (lseek (desc, 0, 2) < 0) |
4153 | { | |
4154 | #ifdef CLASH_DETECTION | |
7204a979 | 4155 | if (!auto_saving) unlock_file (lockname); |
570d7624 JB |
4156 | #endif /* CLASH_DETECTION */ |
4157 | report_file_error ("Lseek error", Fcons (filename, Qnil)); | |
4158 | } | |
4159 | ||
4160 | #ifdef VMS | |
4161 | /* | |
4162 | * Kludge Warning: The VMS C RTL likes to insert carriage returns | |
4163 | * if we do writes that don't end with a carriage return. Furthermore | |
4164 | * it cannot handle writes of more then 16K. The modified | |
4165 | * version of "sys_write" in SYSDEP.C (see comment there) copes with | |
4166 | * this EXCEPT for the last record (iff it doesn't end with a carriage | |
4167 | * return). This implies that if your buffer doesn't end with a carriage | |
4168 | * return, you get one free... tough. However it also means that if | |
4169 | * we make two calls to sys_write (a la the following code) you can | |
4170 | * get one at the gap as well. The easiest way to fix this (honest) | |
4171 | * is to move the gap to the next newline (or the end of the buffer). | |
4172 | * Thus this change. | |
4173 | * | |
4174 | * Yech! | |
4175 | */ | |
4176 | if (GPT > BEG && GPT_ADDR[-1] != '\n') | |
4177 | move_gap (find_next_newline (GPT, 1)); | |
cdfb0f1d KH |
4178 | #else |
4179 | /* Whether VMS or not, we must move the gap to the next of newline | |
4180 | when we must put designation sequences at beginning of line. */ | |
4181 | if (INTEGERP (start) | |
4182 | && coding.type == coding_type_iso2022 | |
4183 | && coding.flags & CODING_FLAG_ISO_DESIGNATE_AT_BOL | |
4184 | && GPT > BEG && GPT_ADDR[-1] != '\n') | |
4185 | move_gap (find_next_newline (GPT, 1)); | |
570d7624 JB |
4186 | #endif |
4187 | ||
4188 | failure = 0; | |
4189 | immediate_quit = 1; | |
4190 | ||
561cb8e1 | 4191 | if (STRINGP (start)) |
570d7624 | 4192 | { |
d6a3cc15 | 4193 | failure = 0 > a_write (desc, XSTRING (start)->data, |
6fdaa9a0 | 4194 | XSTRING (start)->size, 0, &annotations, &coding); |
570d7624 JB |
4195 | save_errno = errno; |
4196 | } | |
4197 | else if (XINT (start) != XINT (end)) | |
4198 | { | |
c975dd7a | 4199 | int nwritten = 0; |
570d7624 JB |
4200 | if (XINT (start) < GPT) |
4201 | { | |
4202 | register int end1 = XINT (end); | |
4203 | tem = XINT (start); | |
6fdaa9a0 KH |
4204 | failure = 0 > a_write (desc, POS_ADDR (tem), |
4205 | min (GPT, end1) - tem, tem, &annotations, | |
4206 | &coding); | |
c975dd7a | 4207 | nwritten += min (GPT, end1) - tem; |
570d7624 JB |
4208 | save_errno = errno; |
4209 | } | |
4210 | ||
4211 | if (XINT (end) > GPT && !failure) | |
4212 | { | |
4213 | tem = XINT (start); | |
4214 | tem = max (tem, GPT); | |
6fdaa9a0 KH |
4215 | failure = 0 > a_write (desc, POS_ADDR (tem), XINT (end) - tem, |
4216 | tem, &annotations, &coding); | |
c975dd7a | 4217 | nwritten += XINT (end) - tem; |
d6a3cc15 RS |
4218 | save_errno = errno; |
4219 | } | |
69f6e679 RS |
4220 | } |
4221 | else | |
4222 | { | |
4223 | /* If file was empty, still need to write the annotations */ | |
cdfb0f1d | 4224 | coding.last_block = 1; |
6fdaa9a0 KH |
4225 | failure = 0 > a_write (desc, "", 0, XINT (start), &annotations, &coding); |
4226 | save_errno = errno; | |
4227 | } | |
4228 | ||
6ad0beeb | 4229 | if (CODING_REQUIRE_FLUSHING (&coding) && !coding.last_block) |
6fdaa9a0 KH |
4230 | { |
4231 | /* We have to flush out a data. */ | |
4232 | coding.last_block = 1; | |
4233 | failure = 0 > e_write (desc, "", 0, &coding); | |
69f6e679 | 4234 | save_errno = errno; |
570d7624 JB |
4235 | } |
4236 | ||
4237 | immediate_quit = 0; | |
4238 | ||
6e23c83e | 4239 | #ifdef HAVE_FSYNC |
570d7624 JB |
4240 | /* Note fsync appears to change the modtime on BSD4.2 (both vax and sun). |
4241 | Disk full in NFS may be reported here. */ | |
1daffa1c RS |
4242 | /* mib says that closing the file will try to write as fast as NFS can do |
4243 | it, and that means the fsync here is not crucial for autosave files. */ | |
4244 | if (!auto_saving && fsync (desc) < 0) | |
cb33c142 KH |
4245 | { |
4246 | /* If fsync fails with EINTR, don't treat that as serious. */ | |
4247 | if (errno != EINTR) | |
4248 | failure = 1, save_errno = errno; | |
4249 | } | |
570d7624 JB |
4250 | #endif |
4251 | ||
199607e4 | 4252 | /* Spurious "file has changed on disk" warnings have been |
570d7624 JB |
4253 | observed on Suns as well. |
4254 | It seems that `close' can change the modtime, under nfs. | |
4255 | ||
4256 | (This has supposedly been fixed in Sunos 4, | |
4257 | but who knows about all the other machines with NFS?) */ | |
4258 | #if 0 | |
4259 | ||
4260 | /* On VMS and APOLLO, must do the stat after the close | |
4261 | since closing changes the modtime. */ | |
4262 | #ifndef VMS | |
4263 | #ifndef APOLLO | |
4264 | /* Recall that #if defined does not work on VMS. */ | |
4265 | #define FOO | |
4266 | fstat (desc, &st); | |
4267 | #endif | |
4268 | #endif | |
4269 | #endif | |
4270 | ||
4271 | /* NFS can report a write failure now. */ | |
4272 | if (close (desc) < 0) | |
4273 | failure = 1, save_errno = errno; | |
4274 | ||
4275 | #ifdef VMS | |
4276 | /* If we wrote to a temporary name and had no errors, rename to real name. */ | |
4277 | if (fname) | |
4278 | { | |
4279 | if (!failure) | |
4280 | failure = (rename (fn, fname) != 0), save_errno = errno; | |
4281 | fn = fname; | |
4282 | } | |
4283 | #endif /* VMS */ | |
4284 | ||
4285 | #ifndef FOO | |
4286 | stat (fn, &st); | |
4287 | #endif | |
6fc6f94b RS |
4288 | /* Discard the unwind protect for close_file_unwind. */ |
4289 | specpdl_ptr = specpdl + count1; | |
4290 | /* Restore the original current buffer. */ | |
98295b48 | 4291 | visit_file = unbind_to (count, visit_file); |
570d7624 JB |
4292 | |
4293 | #ifdef CLASH_DETECTION | |
4294 | if (!auto_saving) | |
7204a979 | 4295 | unlock_file (lockname); |
570d7624 JB |
4296 | #endif /* CLASH_DETECTION */ |
4297 | ||
4298 | /* Do this before reporting IO error | |
4299 | to avoid a "file has changed on disk" warning on | |
4300 | next attempt to save. */ | |
d6a3cc15 | 4301 | if (visiting) |
570d7624 JB |
4302 | current_buffer->modtime = st.st_mtime; |
4303 | ||
4304 | if (failure) | |
b1d1b865 RS |
4305 | error ("IO error writing %s: %s", XSTRING (filename)->data, |
4306 | strerror (save_errno)); | |
570d7624 | 4307 | |
d6a3cc15 | 4308 | if (visiting) |
570d7624 | 4309 | { |
95385625 | 4310 | SAVE_MODIFF = MODIFF; |
2acfd7ae | 4311 | XSETFASTINT (current_buffer->save_length, Z - BEG); |
3b7792ed | 4312 | current_buffer->filename = visit_file; |
f4226e89 | 4313 | update_mode_lines++; |
570d7624 | 4314 | } |
d6a3cc15 | 4315 | else if (quietly) |
570d7624 JB |
4316 | return Qnil; |
4317 | ||
4318 | if (!auto_saving) | |
3b7792ed | 4319 | message ("Wrote %s", XSTRING (visit_file)->data); |
570d7624 JB |
4320 | |
4321 | return Qnil; | |
4322 | } | |
4323 | ||
d6a3cc15 RS |
4324 | Lisp_Object merge (); |
4325 | ||
4326 | DEFUN ("car-less-than-car", Fcar_less_than_car, Scar_less_than_car, 2, 2, 0, | |
2ba0ccff | 4327 | "Return t if (car A) is numerically less than (car B).") |
d6a3cc15 RS |
4328 | (a, b) |
4329 | Lisp_Object a, b; | |
4330 | { | |
4331 | return Flss (Fcar (a), Fcar (b)); | |
4332 | } | |
4333 | ||
4334 | /* Build the complete list of annotations appropriate for writing out | |
4335 | the text between START and END, by calling all the functions in | |
6fc6f94b RS |
4336 | write-region-annotate-functions and merging the lists they return. |
4337 | If one of these functions switches to a different buffer, we assume | |
4338 | that buffer contains altered text. Therefore, the caller must | |
4339 | make sure to restore the current buffer in all cases, | |
4340 | as save-excursion would do. */ | |
d6a3cc15 RS |
4341 | |
4342 | static Lisp_Object | |
6fdaa9a0 KH |
4343 | build_annotations (start, end, pre_write_conversion) |
4344 | Lisp_Object start, end, pre_write_conversion; | |
d6a3cc15 RS |
4345 | { |
4346 | Lisp_Object annotations; | |
4347 | Lisp_Object p, res; | |
4348 | struct gcpro gcpro1, gcpro2; | |
0a20b684 RS |
4349 | Lisp_Object original_buffer; |
4350 | ||
4351 | XSETBUFFER (original_buffer, current_buffer); | |
d6a3cc15 RS |
4352 | |
4353 | annotations = Qnil; | |
4354 | p = Vwrite_region_annotate_functions; | |
4355 | GCPRO2 (annotations, p); | |
4356 | while (!NILP (p)) | |
4357 | { | |
6fc6f94b RS |
4358 | struct buffer *given_buffer = current_buffer; |
4359 | Vwrite_region_annotations_so_far = annotations; | |
d6a3cc15 | 4360 | res = call2 (Fcar (p), start, end); |
6fc6f94b RS |
4361 | /* If the function makes a different buffer current, |
4362 | assume that means this buffer contains altered text to be output. | |
4363 | Reset START and END from the buffer bounds | |
4364 | and discard all previous annotations because they should have | |
4365 | been dealt with by this function. */ | |
4366 | if (current_buffer != given_buffer) | |
4367 | { | |
3cf29f61 RS |
4368 | XSETFASTINT (start, BEGV); |
4369 | XSETFASTINT (end, ZV); | |
6fc6f94b RS |
4370 | annotations = Qnil; |
4371 | } | |
d6a3cc15 RS |
4372 | Flength (res); /* Check basic validity of return value */ |
4373 | annotations = merge (annotations, res, Qcar_less_than_car); | |
4374 | p = Fcdr (p); | |
4375 | } | |
0d420e88 BG |
4376 | |
4377 | /* Now do the same for annotation functions implied by the file-format */ | |
4378 | if (auto_saving && (!EQ (Vauto_save_file_format, Qt))) | |
4379 | p = Vauto_save_file_format; | |
4380 | else | |
4381 | p = current_buffer->file_format; | |
4382 | while (!NILP (p)) | |
4383 | { | |
4384 | struct buffer *given_buffer = current_buffer; | |
4385 | Vwrite_region_annotations_so_far = annotations; | |
0a20b684 RS |
4386 | res = call4 (Qformat_annotate_function, Fcar (p), start, end, |
4387 | original_buffer); | |
0d420e88 BG |
4388 | if (current_buffer != given_buffer) |
4389 | { | |
3cf29f61 RS |
4390 | XSETFASTINT (start, BEGV); |
4391 | XSETFASTINT (end, ZV); | |
0d420e88 BG |
4392 | annotations = Qnil; |
4393 | } | |
4394 | Flength (res); | |
4395 | annotations = merge (annotations, res, Qcar_less_than_car); | |
4396 | p = Fcdr (p); | |
4397 | } | |
6fdaa9a0 KH |
4398 | |
4399 | /* At last, do the same for the function PRE_WRITE_CONVERSION | |
4400 | implied by the current coding-system. */ | |
4401 | if (!NILP (pre_write_conversion)) | |
4402 | { | |
4403 | struct buffer *given_buffer = current_buffer; | |
4404 | Vwrite_region_annotations_so_far = annotations; | |
4405 | res = call2 (pre_write_conversion, start, end); | |
6fdaa9a0 | 4406 | Flength (res); |
cdfb0f1d KH |
4407 | annotations = (current_buffer != given_buffer |
4408 | ? res | |
4409 | : merge (annotations, res, Qcar_less_than_car)); | |
6fdaa9a0 KH |
4410 | } |
4411 | ||
d6a3cc15 RS |
4412 | UNGCPRO; |
4413 | return annotations; | |
4414 | } | |
4415 | ||
4416 | /* Write to descriptor DESC the LEN characters starting at ADDR, | |
4417 | assuming they start at position POS in the buffer. | |
4418 | Intersperse with them the annotations from *ANNOT | |
4419 | (those which fall within the range of positions POS to POS + LEN), | |
4420 | each at its appropriate position. | |
4421 | ||
4422 | Modify *ANNOT by discarding elements as we output them. | |
4423 | The return value is negative in case of system call failure. */ | |
4424 | ||
4425 | int | |
6fdaa9a0 | 4426 | a_write (desc, addr, len, pos, annot, coding) |
d6a3cc15 RS |
4427 | int desc; |
4428 | register char *addr; | |
4429 | register int len; | |
4430 | int pos; | |
4431 | Lisp_Object *annot; | |
6fdaa9a0 | 4432 | struct coding_system *coding; |
d6a3cc15 RS |
4433 | { |
4434 | Lisp_Object tem; | |
4435 | int nextpos; | |
4436 | int lastpos = pos + len; | |
4437 | ||
eb15aa18 | 4438 | while (NILP (*annot) || CONSP (*annot)) |
d6a3cc15 RS |
4439 | { |
4440 | tem = Fcar_safe (Fcar (*annot)); | |
4441 | if (INTEGERP (tem) && XINT (tem) >= pos && XFASTINT (tem) <= lastpos) | |
4442 | nextpos = XFASTINT (tem); | |
4443 | else | |
6fdaa9a0 | 4444 | return e_write (desc, addr, lastpos - pos, coding); |
d6a3cc15 RS |
4445 | if (nextpos > pos) |
4446 | { | |
6fdaa9a0 | 4447 | if (0 > e_write (desc, addr, nextpos - pos, coding)) |
d6a3cc15 RS |
4448 | return -1; |
4449 | addr += nextpos - pos; | |
4450 | pos = nextpos; | |
4451 | } | |
4452 | tem = Fcdr (Fcar (*annot)); | |
4453 | if (STRINGP (tem)) | |
4454 | { | |
6fdaa9a0 KH |
4455 | if (0 > e_write (desc, XSTRING (tem)->data, XSTRING (tem)->size, |
4456 | coding)) | |
d6a3cc15 RS |
4457 | return -1; |
4458 | } | |
4459 | *annot = Fcdr (*annot); | |
4460 | } | |
4461 | } | |
4462 | ||
6fdaa9a0 KH |
4463 | #ifndef WRITE_BUF_SIZE |
4464 | #define WRITE_BUF_SIZE (16 * 1024) | |
4465 | #endif | |
4466 | ||
570d7624 | 4467 | int |
6fdaa9a0 | 4468 | e_write (desc, addr, len, coding) |
570d7624 JB |
4469 | int desc; |
4470 | register char *addr; | |
4471 | register int len; | |
6fdaa9a0 | 4472 | struct coding_system *coding; |
570d7624 | 4473 | { |
6fdaa9a0 KH |
4474 | char buf[WRITE_BUF_SIZE]; |
4475 | int produced, consumed; | |
570d7624 | 4476 | |
6fdaa9a0 KH |
4477 | /* We used to have a code for handling selective display here. But, |
4478 | now it is handled within encode_coding. */ | |
4479 | while (1) | |
570d7624 | 4480 | { |
6fdaa9a0 KH |
4481 | produced = encode_coding (coding, addr, buf, len, WRITE_BUF_SIZE, |
4482 | &consumed); | |
4483 | len -= consumed, addr += consumed; | |
6fdaa9a0 KH |
4484 | if (produced > 0) |
4485 | { | |
4486 | produced -= write (desc, buf, produced); | |
4487 | if (produced) return -1; | |
570d7624 | 4488 | } |
6fdaa9a0 KH |
4489 | if (len <= 0) |
4490 | break; | |
570d7624 JB |
4491 | } |
4492 | return 0; | |
4493 | } | |
4494 | ||
4495 | DEFUN ("verify-visited-file-modtime", Fverify_visited_file_modtime, | |
4496 | Sverify_visited_file_modtime, 1, 1, 0, | |
4497 | "Return t if last mod time of BUF's visited file matches what BUF records.\n\ | |
4498 | This means that the file has not been changed since it was visited or saved.") | |
4499 | (buf) | |
4500 | Lisp_Object buf; | |
4501 | { | |
4502 | struct buffer *b; | |
4503 | struct stat st; | |
32f4334d | 4504 | Lisp_Object handler; |
b1d1b865 | 4505 | Lisp_Object filename; |
570d7624 JB |
4506 | |
4507 | CHECK_BUFFER (buf, 0); | |
4508 | b = XBUFFER (buf); | |
4509 | ||
93c30b5f | 4510 | if (!STRINGP (b->filename)) return Qt; |
570d7624 JB |
4511 | if (b->modtime == 0) return Qt; |
4512 | ||
32f4334d RS |
4513 | /* If the file name has special constructs in it, |
4514 | call the corresponding file handler. */ | |
49307295 KH |
4515 | handler = Ffind_file_name_handler (b->filename, |
4516 | Qverify_visited_file_modtime); | |
32f4334d | 4517 | if (!NILP (handler)) |
09121adc | 4518 | return call2 (handler, Qverify_visited_file_modtime, buf); |
32f4334d | 4519 | |
b1d1b865 RS |
4520 | filename = ENCODE_FILE (b->filename); |
4521 | ||
4522 | if (stat (XSTRING (filename)->data, &st) < 0) | |
570d7624 JB |
4523 | { |
4524 | /* If the file doesn't exist now and didn't exist before, | |
4525 | we say that it isn't modified, provided the error is a tame one. */ | |
4526 | if (errno == ENOENT || errno == EACCES || errno == ENOTDIR) | |
4527 | st.st_mtime = -1; | |
4528 | else | |
4529 | st.st_mtime = 0; | |
4530 | } | |
4531 | if (st.st_mtime == b->modtime | |
4532 | /* If both are positive, accept them if they are off by one second. */ | |
4533 | || (st.st_mtime > 0 && b->modtime > 0 | |
4534 | && (st.st_mtime == b->modtime + 1 | |
4535 | || st.st_mtime == b->modtime - 1))) | |
4536 | return Qt; | |
4537 | return Qnil; | |
4538 | } | |
4539 | ||
4540 | DEFUN ("clear-visited-file-modtime", Fclear_visited_file_modtime, | |
4541 | Sclear_visited_file_modtime, 0, 0, 0, | |
4542 | "Clear out records of last mod time of visited file.\n\ | |
4543 | Next attempt to save will certainly not complain of a discrepancy.") | |
4544 | () | |
4545 | { | |
4546 | current_buffer->modtime = 0; | |
4547 | return Qnil; | |
4548 | } | |
4549 | ||
f5d5eccf RS |
4550 | DEFUN ("visited-file-modtime", Fvisited_file_modtime, |
4551 | Svisited_file_modtime, 0, 0, 0, | |
4552 | "Return the current buffer's recorded visited file modification time.\n\ | |
4553 | The value is a list of the form (HIGH . LOW), like the time values\n\ | |
4554 | that `file-attributes' returns.") | |
4555 | () | |
4556 | { | |
b50536bb | 4557 | return long_to_cons ((unsigned long) current_buffer->modtime); |
f5d5eccf RS |
4558 | } |
4559 | ||
570d7624 | 4560 | DEFUN ("set-visited-file-modtime", Fset_visited_file_modtime, |
f5d5eccf | 4561 | Sset_visited_file_modtime, 0, 1, 0, |
570d7624 JB |
4562 | "Update buffer's recorded modification time from the visited file's time.\n\ |
4563 | Useful if the buffer was not read from the file normally\n\ | |
f5d5eccf RS |
4564 | or if the file itself has been changed for some known benign reason.\n\ |
4565 | An argument specifies the modification time value to use\n\ | |
4566 | \(instead of that of the visited file), in the form of a list\n\ | |
4567 | \(HIGH . LOW) or (HIGH LOW).") | |
4568 | (time_list) | |
4569 | Lisp_Object time_list; | |
570d7624 | 4570 | { |
f5d5eccf RS |
4571 | if (!NILP (time_list)) |
4572 | current_buffer->modtime = cons_to_long (time_list); | |
4573 | else | |
4574 | { | |
4575 | register Lisp_Object filename; | |
4576 | struct stat st; | |
4577 | Lisp_Object handler; | |
570d7624 | 4578 | |
f5d5eccf | 4579 | filename = Fexpand_file_name (current_buffer->filename, Qnil); |
32f4334d | 4580 | |
f5d5eccf RS |
4581 | /* If the file name has special constructs in it, |
4582 | call the corresponding file handler. */ | |
49307295 | 4583 | handler = Ffind_file_name_handler (filename, Qset_visited_file_modtime); |
f5d5eccf | 4584 | if (!NILP (handler)) |
caf3c431 | 4585 | /* The handler can find the file name the same way we did. */ |
76c881b0 | 4586 | return call2 (handler, Qset_visited_file_modtime, Qnil); |
b1d1b865 RS |
4587 | |
4588 | filename = ENCODE_FILE (filename); | |
4589 | ||
4590 | if (stat (XSTRING (filename)->data, &st) >= 0) | |
f5d5eccf RS |
4591 | current_buffer->modtime = st.st_mtime; |
4592 | } | |
570d7624 JB |
4593 | |
4594 | return Qnil; | |
4595 | } | |
4596 | \f | |
4597 | Lisp_Object | |
4598 | auto_save_error () | |
4599 | { | |
570d7624 | 4600 | ring_bell (); |
1a04498e | 4601 | message ("Autosaving...error for %s", XSTRING (current_buffer->name)->data); |
de49a6d3 | 4602 | Fsleep_for (make_number (1), Qnil); |
1a04498e | 4603 | message ("Autosaving...error!for %s", XSTRING (current_buffer->name)->data); |
de49a6d3 | 4604 | Fsleep_for (make_number (1), Qnil); |
1a04498e | 4605 | message ("Autosaving...error for %s", XSTRING (current_buffer->name)->data); |
de49a6d3 | 4606 | Fsleep_for (make_number (1), Qnil); |
570d7624 JB |
4607 | return Qnil; |
4608 | } | |
4609 | ||
4610 | Lisp_Object | |
4611 | auto_save_1 () | |
4612 | { | |
4613 | unsigned char *fn; | |
4614 | struct stat st; | |
4615 | ||
4616 | /* Get visited file's mode to become the auto save file's mode. */ | |
4617 | if (stat (XSTRING (current_buffer->filename)->data, &st) >= 0) | |
4618 | /* But make sure we can overwrite it later! */ | |
4619 | auto_save_mode_bits = st.st_mode | 0600; | |
4620 | else | |
4621 | auto_save_mode_bits = 0666; | |
4622 | ||
4623 | return | |
4624 | Fwrite_region (Qnil, Qnil, | |
4625 | current_buffer->auto_save_file_name, | |
115af127 | 4626 | Qnil, Qlambda, Qnil); |
570d7624 JB |
4627 | } |
4628 | ||
e54d3b5d | 4629 | static Lisp_Object |
1b335d29 RS |
4630 | do_auto_save_unwind (stream) /* used as unwind-protect function */ |
4631 | Lisp_Object stream; | |
e54d3b5d | 4632 | { |
3be3c08e | 4633 | auto_saving = 0; |
1b335d29 RS |
4634 | if (!NILP (stream)) |
4635 | fclose ((FILE *) (XFASTINT (XCONS (stream)->car) << 16 | |
4636 | | XFASTINT (XCONS (stream)->cdr))); | |
e54d3b5d RS |
4637 | return Qnil; |
4638 | } | |
4639 | ||
a8c828be RS |
4640 | static Lisp_Object |
4641 | do_auto_save_unwind_1 (value) /* used as unwind-protect function */ | |
4642 | Lisp_Object value; | |
4643 | { | |
4644 | minibuffer_auto_raise = XINT (value); | |
4645 | return Qnil; | |
4646 | } | |
4647 | ||
570d7624 JB |
4648 | DEFUN ("do-auto-save", Fdo_auto_save, Sdo_auto_save, 0, 2, "", |
4649 | "Auto-save all buffers that need it.\n\ | |
4650 | This is all buffers that have auto-saving enabled\n\ | |
4651 | and are changed since last auto-saved.\n\ | |
4652 | Auto-saving writes the buffer into a file\n\ | |
4653 | so that your editing is not lost if the system crashes.\n\ | |
012d4cdc RS |
4654 | This file is not the file you visited; that changes only when you save.\n\ |
4655 | Normally we run the normal hook `auto-save-hook' before saving.\n\n\ | |
3b7f6e60 EN |
4656 | A non-nil NO-MESSAGE argument means do not print any message if successful.\n\ |
4657 | A non-nil CURRENT-ONLY argument means save only current buffer.") | |
17857782 JB |
4658 | (no_message, current_only) |
4659 | Lisp_Object no_message, current_only; | |
570d7624 JB |
4660 | { |
4661 | struct buffer *old = current_buffer, *b; | |
4662 | Lisp_Object tail, buf; | |
4663 | int auto_saved = 0; | |
4664 | char *omessage = echo_area_glyphs; | |
f05b275b | 4665 | int omessage_length = echo_area_glyphs_length; |
f14b1c68 | 4666 | int do_handled_files; |
ff4c9993 | 4667 | Lisp_Object oquit; |
1b335d29 RS |
4668 | FILE *stream; |
4669 | Lisp_Object lispstream; | |
e54d3b5d RS |
4670 | int count = specpdl_ptr - specpdl; |
4671 | int *ptr; | |
a8c828be | 4672 | int orig_minibuffer_auto_raise = minibuffer_auto_raise; |
ff4c9993 RS |
4673 | |
4674 | /* Ordinarily don't quit within this function, | |
4675 | but don't make it impossible to quit (in case we get hung in I/O). */ | |
4676 | oquit = Vquit_flag; | |
4677 | Vquit_flag = Qnil; | |
570d7624 JB |
4678 | |
4679 | /* No GCPRO needed, because (when it matters) all Lisp_Object variables | |
4680 | point to non-strings reached from Vbuffer_alist. */ | |
4681 | ||
570d7624 | 4682 | if (minibuf_level) |
17857782 | 4683 | no_message = Qt; |
570d7624 | 4684 | |
265a9e55 | 4685 | if (!NILP (Vrun_hooks)) |
570d7624 JB |
4686 | call1 (Vrun_hooks, intern ("auto-save-hook")); |
4687 | ||
e54d3b5d RS |
4688 | if (STRINGP (Vauto_save_list_file_name)) |
4689 | { | |
258fd2cb RS |
4690 | Lisp_Object listfile; |
4691 | listfile = Fexpand_file_name (Vauto_save_list_file_name, Qnil); | |
1b335d29 | 4692 | stream = fopen (XSTRING (listfile)->data, "w"); |
0eff1f85 RS |
4693 | if (stream != NULL) |
4694 | { | |
4695 | /* Arrange to close that file whether or not we get an error. | |
4696 | Also reset auto_saving to 0. */ | |
4697 | lispstream = Fcons (Qnil, Qnil); | |
4698 | XSETFASTINT (XCONS (lispstream)->car, (EMACS_UINT)stream >> 16); | |
4699 | XSETFASTINT (XCONS (lispstream)->cdr, (EMACS_UINT)stream & 0xffff); | |
4700 | } | |
4701 | else | |
4702 | lispstream = Qnil; | |
e54d3b5d RS |
4703 | } |
4704 | else | |
1b335d29 RS |
4705 | { |
4706 | stream = NULL; | |
4707 | lispstream = Qnil; | |
4708 | } | |
199607e4 | 4709 | |
1b335d29 | 4710 | record_unwind_protect (do_auto_save_unwind, lispstream); |
a8c828be RS |
4711 | record_unwind_protect (do_auto_save_unwind_1, |
4712 | make_number (minibuffer_auto_raise)); | |
4713 | minibuffer_auto_raise = 0; | |
3be3c08e RS |
4714 | auto_saving = 1; |
4715 | ||
f14b1c68 JB |
4716 | /* First, save all files which don't have handlers. If Emacs is |
4717 | crashing, the handlers may tweak what is causing Emacs to crash | |
4718 | in the first place, and it would be a shame if Emacs failed to | |
4719 | autosave perfectly ordinary files because it couldn't handle some | |
4720 | ange-ftp'd file. */ | |
4721 | for (do_handled_files = 0; do_handled_files < 2; do_handled_files++) | |
41d86b13 | 4722 | for (tail = Vbuffer_alist; GC_CONSP (tail); tail = XCONS (tail)->cdr) |
f14b1c68 JB |
4723 | { |
4724 | buf = XCONS (XCONS (tail)->car)->cdr; | |
4725 | b = XBUFFER (buf); | |
199607e4 | 4726 | |
e54d3b5d | 4727 | /* Record all the buffers that have auto save mode |
258fd2cb RS |
4728 | in the special file that lists them. For each of these buffers, |
4729 | Record visited name (if any) and auto save name. */ | |
93c30b5f | 4730 | if (STRINGP (b->auto_save_file_name) |
1b335d29 | 4731 | && stream != NULL && do_handled_files == 0) |
e54d3b5d | 4732 | { |
258fd2cb RS |
4733 | if (!NILP (b->filename)) |
4734 | { | |
1b335d29 RS |
4735 | fwrite (XSTRING (b->filename)->data, 1, |
4736 | XSTRING (b->filename)->size, stream); | |
258fd2cb | 4737 | } |
1b335d29 RS |
4738 | putc ('\n', stream); |
4739 | fwrite (XSTRING (b->auto_save_file_name)->data, 1, | |
4740 | XSTRING (b->auto_save_file_name)->size, stream); | |
4741 | putc ('\n', stream); | |
e54d3b5d | 4742 | } |
17857782 | 4743 | |
f14b1c68 JB |
4744 | if (!NILP (current_only) |
4745 | && b != current_buffer) | |
4746 | continue; | |
e54d3b5d | 4747 | |
95385625 RS |
4748 | /* Don't auto-save indirect buffers. |
4749 | The base buffer takes care of it. */ | |
4750 | if (b->base_buffer) | |
4751 | continue; | |
4752 | ||
f14b1c68 JB |
4753 | /* Check for auto save enabled |
4754 | and file changed since last auto save | |
4755 | and file changed since last real save. */ | |
93c30b5f | 4756 | if (STRINGP (b->auto_save_file_name) |
95385625 | 4757 | && BUF_SAVE_MODIFF (b) < BUF_MODIFF (b) |
f14b1c68 | 4758 | && b->auto_save_modified < BUF_MODIFF (b) |
82c2d839 RS |
4759 | /* -1 means we've turned off autosaving for a while--see below. */ |
4760 | && XINT (b->save_length) >= 0 | |
f14b1c68 | 4761 | && (do_handled_files |
49307295 KH |
4762 | || NILP (Ffind_file_name_handler (b->auto_save_file_name, |
4763 | Qwrite_region)))) | |
f14b1c68 | 4764 | { |
b60247d9 RS |
4765 | EMACS_TIME before_time, after_time; |
4766 | ||
4767 | EMACS_GET_TIME (before_time); | |
4768 | ||
4769 | /* If we had a failure, don't try again for 20 minutes. */ | |
4770 | if (b->auto_save_failure_time >= 0 | |
4771 | && EMACS_SECS (before_time) - b->auto_save_failure_time < 1200) | |
4772 | continue; | |
4773 | ||
f14b1c68 JB |
4774 | if ((XFASTINT (b->save_length) * 10 |
4775 | > (BUF_Z (b) - BUF_BEG (b)) * 13) | |
4776 | /* A short file is likely to change a large fraction; | |
4777 | spare the user annoying messages. */ | |
4778 | && XFASTINT (b->save_length) > 5000 | |
4779 | /* These messages are frequent and annoying for `*mail*'. */ | |
4780 | && !EQ (b->filename, Qnil) | |
4781 | && NILP (no_message)) | |
4782 | { | |
4783 | /* It has shrunk too much; turn off auto-saving here. */ | |
a8c828be | 4784 | minibuffer_auto_raise = orig_minibuffer_auto_raise; |
f14b1c68 JB |
4785 | message ("Buffer %s has shrunk a lot; auto save turned off there", |
4786 | XSTRING (b->name)->data); | |
a8c828be | 4787 | minibuffer_auto_raise = 0; |
82c2d839 RS |
4788 | /* Turn off auto-saving until there's a real save, |
4789 | and prevent any more warnings. */ | |
46283abe | 4790 | XSETINT (b->save_length, -1); |
f14b1c68 JB |
4791 | Fsleep_for (make_number (1), Qnil); |
4792 | continue; | |
4793 | } | |
4794 | set_buffer_internal (b); | |
4795 | if (!auto_saved && NILP (no_message)) | |
4796 | message1 ("Auto-saving..."); | |
4797 | internal_condition_case (auto_save_1, Qt, auto_save_error); | |
4798 | auto_saved++; | |
4799 | b->auto_save_modified = BUF_MODIFF (b); | |
2acfd7ae | 4800 | XSETFASTINT (current_buffer->save_length, Z - BEG); |
f14b1c68 | 4801 | set_buffer_internal (old); |
b60247d9 RS |
4802 | |
4803 | EMACS_GET_TIME (after_time); | |
4804 | ||
4805 | /* If auto-save took more than 60 seconds, | |
4806 | assume it was an NFS failure that got a timeout. */ | |
4807 | if (EMACS_SECS (after_time) - EMACS_SECS (before_time) > 60) | |
4808 | b->auto_save_failure_time = EMACS_SECS (after_time); | |
f14b1c68 JB |
4809 | } |
4810 | } | |
570d7624 | 4811 | |
b67f2ca5 RS |
4812 | /* Prevent another auto save till enough input events come in. */ |
4813 | record_auto_save (); | |
570d7624 | 4814 | |
17857782 | 4815 | if (auto_saved && NILP (no_message)) |
f05b275b KH |
4816 | { |
4817 | if (omessage) | |
31f3d831 | 4818 | { |
22e59fa7 | 4819 | sit_for (1, 0, 0, 0, 0); |
31f3d831 KH |
4820 | message2 (omessage, omessage_length); |
4821 | } | |
f05b275b KH |
4822 | else |
4823 | message1 ("Auto-saving...done"); | |
4824 | } | |
570d7624 | 4825 | |
ff4c9993 RS |
4826 | Vquit_flag = oquit; |
4827 | ||
e54d3b5d | 4828 | unbind_to (count, Qnil); |
570d7624 JB |
4829 | return Qnil; |
4830 | } | |
4831 | ||
4832 | DEFUN ("set-buffer-auto-saved", Fset_buffer_auto_saved, | |
4833 | Sset_buffer_auto_saved, 0, 0, 0, | |
4834 | "Mark current buffer as auto-saved with its current text.\n\ | |
4835 | No auto-save file will be written until the buffer changes again.") | |
4836 | () | |
4837 | { | |
4838 | current_buffer->auto_save_modified = MODIFF; | |
2acfd7ae | 4839 | XSETFASTINT (current_buffer->save_length, Z - BEG); |
b60247d9 RS |
4840 | current_buffer->auto_save_failure_time = -1; |
4841 | return Qnil; | |
4842 | } | |
4843 | ||
4844 | DEFUN ("clear-buffer-auto-save-failure", Fclear_buffer_auto_save_failure, | |
4845 | Sclear_buffer_auto_save_failure, 0, 0, 0, | |
4846 | "Clear any record of a recent auto-save failure in the current buffer.") | |
4847 | () | |
4848 | { | |
4849 | current_buffer->auto_save_failure_time = -1; | |
570d7624 JB |
4850 | return Qnil; |
4851 | } | |
4852 | ||
4853 | DEFUN ("recent-auto-save-p", Frecent_auto_save_p, Srecent_auto_save_p, | |
4854 | 0, 0, 0, | |
4855 | "Return t if buffer has been auto-saved since last read in or saved.") | |
4856 | () | |
4857 | { | |
95385625 | 4858 | return (SAVE_MODIFF < current_buffer->auto_save_modified) ? Qt : Qnil; |
570d7624 JB |
4859 | } |
4860 | \f | |
4861 | /* Reading and completing file names */ | |
4862 | extern Lisp_Object Ffile_name_completion (), Ffile_name_all_completions (); | |
4863 | ||
6e710ae5 RS |
4864 | /* In the string VAL, change each $ to $$ and return the result. */ |
4865 | ||
4866 | static Lisp_Object | |
4867 | double_dollars (val) | |
4868 | Lisp_Object val; | |
4869 | { | |
4870 | register unsigned char *old, *new; | |
4871 | register int n; | |
4872 | int osize, count; | |
4873 | ||
4874 | osize = XSTRING (val)->size; | |
4875 | /* Quote "$" as "$$" to get it past substitute-in-file-name */ | |
4876 | for (n = osize, count = 0, old = XSTRING (val)->data; n > 0; n--) | |
4877 | if (*old++ == '$') count++; | |
4878 | if (count > 0) | |
4879 | { | |
4880 | old = XSTRING (val)->data; | |
4881 | val = Fmake_string (make_number (osize + count), make_number (0)); | |
4882 | new = XSTRING (val)->data; | |
4883 | for (n = osize; n > 0; n--) | |
4884 | if (*old != '$') | |
4885 | *new++ = *old++; | |
4886 | else | |
4887 | { | |
4888 | *new++ = '$'; | |
4889 | *new++ = '$'; | |
4890 | old++; | |
4891 | } | |
4892 | } | |
4893 | return val; | |
4894 | } | |
4895 | ||
570d7624 JB |
4896 | DEFUN ("read-file-name-internal", Fread_file_name_internal, Sread_file_name_internal, |
4897 | 3, 3, 0, | |
4898 | "Internal subroutine for read-file-name. Do not call this.") | |
4899 | (string, dir, action) | |
4900 | Lisp_Object string, dir, action; | |
4901 | /* action is nil for complete, t for return list of completions, | |
4902 | lambda for verify final value */ | |
4903 | { | |
4904 | Lisp_Object name, specdir, realdir, val, orig_string; | |
09121adc | 4905 | int changed; |
8ce069f5 | 4906 | struct gcpro gcpro1, gcpro2, gcpro3, gcpro4, gcpro5; |
09121adc | 4907 | |
58cc3710 RS |
4908 | CHECK_STRING (string, 0); |
4909 | ||
09121adc RS |
4910 | realdir = dir; |
4911 | name = string; | |
4912 | orig_string = Qnil; | |
4913 | specdir = Qnil; | |
4914 | changed = 0; | |
4915 | /* No need to protect ACTION--we only compare it with t and nil. */ | |
8ce069f5 | 4916 | GCPRO5 (string, realdir, name, specdir, orig_string); |
570d7624 JB |
4917 | |
4918 | if (XSTRING (string)->size == 0) | |
4919 | { | |
570d7624 | 4920 | if (EQ (action, Qlambda)) |
09121adc RS |
4921 | { |
4922 | UNGCPRO; | |
4923 | return Qnil; | |
4924 | } | |
570d7624 JB |
4925 | } |
4926 | else | |
4927 | { | |
4928 | orig_string = string; | |
4929 | string = Fsubstitute_in_file_name (string); | |
09121adc | 4930 | changed = NILP (Fstring_equal (string, orig_string)); |
570d7624 | 4931 | name = Ffile_name_nondirectory (string); |
09121adc RS |
4932 | val = Ffile_name_directory (string); |
4933 | if (! NILP (val)) | |
4934 | realdir = Fexpand_file_name (val, realdir); | |
570d7624 JB |
4935 | } |
4936 | ||
265a9e55 | 4937 | if (NILP (action)) |
570d7624 JB |
4938 | { |
4939 | specdir = Ffile_name_directory (string); | |
4940 | val = Ffile_name_completion (name, realdir); | |
09121adc | 4941 | UNGCPRO; |
93c30b5f | 4942 | if (!STRINGP (val)) |
570d7624 | 4943 | { |
09121adc | 4944 | if (changed) |
dbd04e01 | 4945 | return double_dollars (string); |
09121adc | 4946 | return val; |
570d7624 JB |
4947 | } |
4948 | ||
265a9e55 | 4949 | if (!NILP (specdir)) |
570d7624 JB |
4950 | val = concat2 (specdir, val); |
4951 | #ifndef VMS | |
6e710ae5 RS |
4952 | return double_dollars (val); |
4953 | #else /* not VMS */ | |
09121adc | 4954 | return val; |
6e710ae5 | 4955 | #endif /* not VMS */ |
570d7624 | 4956 | } |
09121adc | 4957 | UNGCPRO; |
570d7624 JB |
4958 | |
4959 | if (EQ (action, Qt)) | |
4960 | return Ffile_name_all_completions (name, realdir); | |
4961 | /* Only other case actually used is ACTION = lambda */ | |
4962 | #ifdef VMS | |
4963 | /* Supposedly this helps commands such as `cd' that read directory names, | |
4964 | but can someone explain how it helps them? -- RMS */ | |
4965 | if (XSTRING (name)->size == 0) | |
4966 | return Qt; | |
4967 | #endif /* VMS */ | |
4968 | return Ffile_exists_p (string); | |
4969 | } | |
4970 | ||
4971 | DEFUN ("read-file-name", Fread_file_name, Sread_file_name, 1, 5, 0, | |
4972 | "Read file name, prompting with PROMPT and completing in directory DIR.\n\ | |
4973 | Value is not expanded---you must call `expand-file-name' yourself.\n\ | |
3b7f6e60 EN |
4974 | Default name to DEFAULT-FILENAME if user enters a null string.\n\ |
4975 | (If DEFAULT-FILENAME is omitted, the visited file name is used,\n\ | |
3beeedfe | 4976 | except that if INITIAL is specified, that combined with DIR is used.)\n\ |
570d7624 JB |
4977 | Fourth arg MUSTMATCH non-nil means require existing file's name.\n\ |
4978 | Non-nil and non-t means also require confirmation after completion.\n\ | |
4979 | Fifth arg INITIAL specifies text to start with.\n\ | |
4980 | DIR defaults to current buffer's directory default.") | |
3b7f6e60 EN |
4981 | (prompt, dir, default_filename, mustmatch, initial) |
4982 | Lisp_Object prompt, dir, default_filename, mustmatch, initial; | |
570d7624 | 4983 | { |
85b5fe07 | 4984 | Lisp_Object val, insdef, insdef1, tem; |
570d7624 JB |
4985 | struct gcpro gcpro1, gcpro2; |
4986 | register char *homedir; | |
4987 | int count; | |
4988 | ||
265a9e55 | 4989 | if (NILP (dir)) |
570d7624 | 4990 | dir = current_buffer->directory; |
3b7f6e60 | 4991 | if (NILP (default_filename)) |
3beeedfe RS |
4992 | { |
4993 | if (! NILP (initial)) | |
3b7f6e60 | 4994 | default_filename = Fexpand_file_name (initial, dir); |
3beeedfe | 4995 | else |
3b7f6e60 | 4996 | default_filename = current_buffer->filename; |
3beeedfe | 4997 | } |
570d7624 JB |
4998 | |
4999 | /* If dir starts with user's homedir, change that to ~. */ | |
5000 | homedir = (char *) egetenv ("HOME"); | |
199607e4 RS |
5001 | #ifdef DOS_NT |
5002 | homedir = strcpy (alloca (strlen (homedir) + 1), homedir); | |
5003 | CORRECT_DIR_SEPS (homedir); | |
5004 | #endif | |
570d7624 | 5005 | if (homedir != 0 |
93c30b5f | 5006 | && STRINGP (dir) |
570d7624 | 5007 | && !strncmp (homedir, XSTRING (dir)->data, strlen (homedir)) |
5e570b75 | 5008 | && IS_DIRECTORY_SEP (XSTRING (dir)->data[strlen (homedir)])) |
570d7624 JB |
5009 | { |
5010 | dir = make_string (XSTRING (dir)->data + strlen (homedir) - 1, | |
5011 | XSTRING (dir)->size - strlen (homedir) + 1); | |
5012 | XSTRING (dir)->data[0] = '~'; | |
5013 | } | |
5014 | ||
58cc3710 | 5015 | if (insert_default_directory && STRINGP (dir)) |
570d7624 JB |
5016 | { |
5017 | insdef = dir; | |
265a9e55 | 5018 | if (!NILP (initial)) |
570d7624 | 5019 | { |
15c65264 | 5020 | Lisp_Object args[2], pos; |
570d7624 JB |
5021 | |
5022 | args[0] = insdef; | |
5023 | args[1] = initial; | |
5024 | insdef = Fconcat (2, args); | |
351bd676 | 5025 | pos = make_number (XSTRING (double_dollars (dir))->size); |
6e710ae5 | 5026 | insdef1 = Fcons (double_dollars (insdef), pos); |
570d7624 | 5027 | } |
6e710ae5 RS |
5028 | else |
5029 | insdef1 = double_dollars (insdef); | |
570d7624 | 5030 | } |
58cc3710 | 5031 | else if (STRINGP (initial)) |
351bd676 KH |
5032 | { |
5033 | insdef = initial; | |
bffd00b0 | 5034 | insdef1 = Fcons (double_dollars (insdef), make_number (0)); |
351bd676 | 5035 | } |
570d7624 | 5036 | else |
85b5fe07 | 5037 | insdef = Qnil, insdef1 = Qnil; |
570d7624 JB |
5038 | |
5039 | #ifdef VMS | |
5040 | count = specpdl_ptr - specpdl; | |
5041 | specbind (intern ("completion-ignore-case"), Qt); | |
5042 | #endif | |
5043 | ||
3b7f6e60 | 5044 | GCPRO2 (insdef, default_filename); |
570d7624 | 5045 | val = Fcompleting_read (prompt, intern ("read-file-name-internal"), |
85b5fe07 | 5046 | dir, mustmatch, insdef1, |
450c1a67 | 5047 | Qfile_name_history, default_filename, Qnil); |
a8c828be RS |
5048 | /* If Fcompleting_read returned the default string itself |
5049 | (rather than a new string with the same contents), | |
5050 | it has to mean that the user typed RET with the minibuffer empty. | |
5051 | In that case, we really want to return "" | |
5052 | so that commands such as set-visited-file-name can distinguish. */ | |
5053 | if (EQ (val, default_filename)) | |
5054 | val = build_string (""); | |
570d7624 JB |
5055 | |
5056 | #ifdef VMS | |
5057 | unbind_to (count, Qnil); | |
5058 | #endif | |
5059 | ||
5060 | UNGCPRO; | |
265a9e55 | 5061 | if (NILP (val)) |
570d7624 JB |
5062 | error ("No file name specified"); |
5063 | tem = Fstring_equal (val, insdef); | |
3b7f6e60 EN |
5064 | if (!NILP (tem) && !NILP (default_filename)) |
5065 | return default_filename; | |
b320926a | 5066 | if (XSTRING (val)->size == 0 && NILP (insdef)) |
d9bc1c99 | 5067 | { |
3b7f6e60 EN |
5068 | if (!NILP (default_filename)) |
5069 | return default_filename; | |
d9bc1c99 RS |
5070 | else |
5071 | error ("No default file name"); | |
5072 | } | |
570d7624 JB |
5073 | return Fsubstitute_in_file_name (val); |
5074 | } | |
5075 | ||
5e570b75 | 5076 | #if 0 /* Old version */ |
570d7624 | 5077 | DEFUN ("read-file-name", Fread_file_name, Sread_file_name, 1, 5, 0, |
0de25302 KH |
5078 | /* Don't confuse make-docfile by having two doc strings for this function. |
5079 | make-docfile does not pay attention to #if, for good reason! */ | |
5080 | 0) | |
570d7624 JB |
5081 | (prompt, dir, defalt, mustmatch, initial) |
5082 | Lisp_Object prompt, dir, defalt, mustmatch, initial; | |
5083 | { | |
5084 | Lisp_Object val, insdef, tem; | |
5085 | struct gcpro gcpro1, gcpro2; | |
5086 | register char *homedir; | |
5087 | int count; | |
5088 | ||
265a9e55 | 5089 | if (NILP (dir)) |
570d7624 | 5090 | dir = current_buffer->directory; |
265a9e55 | 5091 | if (NILP (defalt)) |
570d7624 JB |
5092 | defalt = current_buffer->filename; |
5093 | ||
5094 | /* If dir starts with user's homedir, change that to ~. */ | |
5095 | homedir = (char *) egetenv ("HOME"); | |
5096 | if (homedir != 0 | |
93c30b5f | 5097 | && STRINGP (dir) |
570d7624 JB |
5098 | && !strncmp (homedir, XSTRING (dir)->data, strlen (homedir)) |
5099 | && XSTRING (dir)->data[strlen (homedir)] == '/') | |
5100 | { | |
5101 | dir = make_string (XSTRING (dir)->data + strlen (homedir) - 1, | |
5102 | XSTRING (dir)->size - strlen (homedir) + 1); | |
5103 | XSTRING (dir)->data[0] = '~'; | |
5104 | } | |
5105 | ||
265a9e55 | 5106 | if (!NILP (initial)) |
570d7624 JB |
5107 | insdef = initial; |
5108 | else if (insert_default_directory) | |
5109 | insdef = dir; | |
5110 | else | |
5111 | insdef = build_string (""); | |
5112 | ||
5113 | #ifdef VMS | |
5114 | count = specpdl_ptr - specpdl; | |
5115 | specbind (intern ("completion-ignore-case"), Qt); | |
5116 | #endif | |
5117 | ||
5118 | GCPRO2 (insdef, defalt); | |
5119 | val = Fcompleting_read (prompt, intern ("read-file-name-internal"), | |
5120 | dir, mustmatch, | |
15c65264 | 5121 | insert_default_directory ? insdef : Qnil, |
450c1a67 | 5122 | Qfile_name_history, Qnil, Qnil); |
570d7624 JB |
5123 | |
5124 | #ifdef VMS | |
5125 | unbind_to (count, Qnil); | |
5126 | #endif | |
5127 | ||
5128 | UNGCPRO; | |
265a9e55 | 5129 | if (NILP (val)) |
570d7624 JB |
5130 | error ("No file name specified"); |
5131 | tem = Fstring_equal (val, insdef); | |
265a9e55 | 5132 | if (!NILP (tem) && !NILP (defalt)) |
570d7624 JB |
5133 | return defalt; |
5134 | return Fsubstitute_in_file_name (val); | |
5135 | } | |
5136 | #endif /* Old version */ | |
5137 | \f | |
5138 | syms_of_fileio () | |
5139 | { | |
0bf2eed2 | 5140 | Qexpand_file_name = intern ("expand-file-name"); |
273e0829 | 5141 | Qsubstitute_in_file_name = intern ("substitute-in-file-name"); |
0bf2eed2 RS |
5142 | Qdirectory_file_name = intern ("directory-file-name"); |
5143 | Qfile_name_directory = intern ("file-name-directory"); | |
5144 | Qfile_name_nondirectory = intern ("file-name-nondirectory"); | |
642ef245 | 5145 | Qunhandled_file_name_directory = intern ("unhandled-file-name-directory"); |
0bf2eed2 | 5146 | Qfile_name_as_directory = intern ("file-name-as-directory"); |
32f4334d | 5147 | Qcopy_file = intern ("copy-file"); |
a6e6e718 | 5148 | Qmake_directory_internal = intern ("make-directory-internal"); |
32f4334d RS |
5149 | Qdelete_directory = intern ("delete-directory"); |
5150 | Qdelete_file = intern ("delete-file"); | |
5151 | Qrename_file = intern ("rename-file"); | |
5152 | Qadd_name_to_file = intern ("add-name-to-file"); | |
5153 | Qmake_symbolic_link = intern ("make-symbolic-link"); | |
5154 | Qfile_exists_p = intern ("file-exists-p"); | |
5155 | Qfile_executable_p = intern ("file-executable-p"); | |
5156 | Qfile_readable_p = intern ("file-readable-p"); | |
32f4334d | 5157 | Qfile_writable_p = intern ("file-writable-p"); |
1f8653eb RS |
5158 | Qfile_symlink_p = intern ("file-symlink-p"); |
5159 | Qaccess_file = intern ("access-file"); | |
32f4334d | 5160 | Qfile_directory_p = intern ("file-directory-p"); |
adedc71d | 5161 | Qfile_regular_p = intern ("file-regular-p"); |
32f4334d RS |
5162 | Qfile_accessible_directory_p = intern ("file-accessible-directory-p"); |
5163 | Qfile_modes = intern ("file-modes"); | |
5164 | Qset_file_modes = intern ("set-file-modes"); | |
5165 | Qfile_newer_than_file_p = intern ("file-newer-than-file-p"); | |
5166 | Qinsert_file_contents = intern ("insert-file-contents"); | |
5167 | Qwrite_region = intern ("write-region"); | |
5168 | Qverify_visited_file_modtime = intern ("verify-visited-file-modtime"); | |
3ec46acd | 5169 | Qset_visited_file_modtime = intern ("set-visited-file-modtime"); |
32f4334d | 5170 | |
642ef245 | 5171 | staticpro (&Qexpand_file_name); |
273e0829 | 5172 | staticpro (&Qsubstitute_in_file_name); |
642ef245 JB |
5173 | staticpro (&Qdirectory_file_name); |
5174 | staticpro (&Qfile_name_directory); | |
5175 | staticpro (&Qfile_name_nondirectory); | |
5176 | staticpro (&Qunhandled_file_name_directory); | |
5177 | staticpro (&Qfile_name_as_directory); | |
15c65264 | 5178 | staticpro (&Qcopy_file); |
c34b559d | 5179 | staticpro (&Qmake_directory_internal); |
15c65264 RS |
5180 | staticpro (&Qdelete_directory); |
5181 | staticpro (&Qdelete_file); | |
5182 | staticpro (&Qrename_file); | |
5183 | staticpro (&Qadd_name_to_file); | |
5184 | staticpro (&Qmake_symbolic_link); | |
5185 | staticpro (&Qfile_exists_p); | |
5186 | staticpro (&Qfile_executable_p); | |
5187 | staticpro (&Qfile_readable_p); | |
15c65264 | 5188 | staticpro (&Qfile_writable_p); |
1f8653eb RS |
5189 | staticpro (&Qaccess_file); |
5190 | staticpro (&Qfile_symlink_p); | |
15c65264 | 5191 | staticpro (&Qfile_directory_p); |
adedc71d | 5192 | staticpro (&Qfile_regular_p); |
15c65264 RS |
5193 | staticpro (&Qfile_accessible_directory_p); |
5194 | staticpro (&Qfile_modes); | |
5195 | staticpro (&Qset_file_modes); | |
5196 | staticpro (&Qfile_newer_than_file_p); | |
5197 | staticpro (&Qinsert_file_contents); | |
5198 | staticpro (&Qwrite_region); | |
5199 | staticpro (&Qverify_visited_file_modtime); | |
0a61794b | 5200 | staticpro (&Qset_visited_file_modtime); |
642ef245 JB |
5201 | |
5202 | Qfile_name_history = intern ("file-name-history"); | |
5203 | Fset (Qfile_name_history, Qnil); | |
15c65264 RS |
5204 | staticpro (&Qfile_name_history); |
5205 | ||
570d7624 JB |
5206 | Qfile_error = intern ("file-error"); |
5207 | staticpro (&Qfile_error); | |
199607e4 | 5208 | Qfile_already_exists = intern ("file-already-exists"); |
570d7624 | 5209 | staticpro (&Qfile_already_exists); |
c0b7b21c RS |
5210 | Qfile_date_error = intern ("file-date-error"); |
5211 | staticpro (&Qfile_date_error); | |
570d7624 | 5212 | |
5e570b75 | 5213 | #ifdef DOS_NT |
4c3c22f3 RS |
5214 | Qfind_buffer_file_type = intern ("find-buffer-file-type"); |
5215 | staticpro (&Qfind_buffer_file_type); | |
5e570b75 | 5216 | #endif /* DOS_NT */ |
4c3c22f3 | 5217 | |
b1d1b865 RS |
5218 | DEFVAR_LISP ("file-name-coding-system", &Vfile_name_coding_system, |
5219 | "*Coding system for encoding file names."); | |
5220 | Vfile_name_coding_system = Qnil; | |
5221 | ||
0d420e88 | 5222 | DEFVAR_LISP ("auto-save-file-format", &Vauto_save_file_format, |
824a483f | 5223 | "*Format in which to write auto-save files.\n\ |
0d420e88 BG |
5224 | Should be a list of symbols naming formats that are defined in `format-alist'.\n\ |
5225 | If it is t, which is the default, auto-save files are written in the\n\ | |
5226 | same format as a regular save would use."); | |
5227 | Vauto_save_file_format = Qt; | |
5228 | ||
5229 | Qformat_decode = intern ("format-decode"); | |
5230 | staticpro (&Qformat_decode); | |
5231 | Qformat_annotate_function = intern ("format-annotate-function"); | |
5232 | staticpro (&Qformat_annotate_function); | |
5233 | ||
d6a3cc15 RS |
5234 | Qcar_less_than_car = intern ("car-less-than-car"); |
5235 | staticpro (&Qcar_less_than_car); | |
5236 | ||
570d7624 JB |
5237 | Fput (Qfile_error, Qerror_conditions, |
5238 | Fcons (Qfile_error, Fcons (Qerror, Qnil))); | |
5239 | Fput (Qfile_error, Qerror_message, | |
5240 | build_string ("File error")); | |
5241 | ||
5242 | Fput (Qfile_already_exists, Qerror_conditions, | |
5243 | Fcons (Qfile_already_exists, | |
5244 | Fcons (Qfile_error, Fcons (Qerror, Qnil)))); | |
5245 | Fput (Qfile_already_exists, Qerror_message, | |
5246 | build_string ("File already exists")); | |
5247 | ||
c0b7b21c RS |
5248 | Fput (Qfile_date_error, Qerror_conditions, |
5249 | Fcons (Qfile_date_error, | |
5250 | Fcons (Qfile_error, Fcons (Qerror, Qnil)))); | |
5251 | Fput (Qfile_date_error, Qerror_message, | |
5252 | build_string ("Cannot set file date")); | |
5253 | ||
570d7624 JB |
5254 | DEFVAR_BOOL ("insert-default-directory", &insert_default_directory, |
5255 | "*Non-nil means when reading a filename start with default dir in minibuffer."); | |
5256 | insert_default_directory = 1; | |
5257 | ||
5258 | DEFVAR_BOOL ("vms-stmlf-recfm", &vms_stmlf_recfm, | |
5259 | "*Non-nil means write new files with record format `stmlf'.\n\ | |
5260 | nil means use format `var'. This variable is meaningful only on VMS."); | |
5261 | vms_stmlf_recfm = 0; | |
5262 | ||
199607e4 RS |
5263 | DEFVAR_LISP ("directory-sep-char", &Vdirectory_sep_char, |
5264 | "Directory separator character for built-in functions that return file names.\n\ | |
5265 | The value should be either ?/ or ?\\ (any other value is treated as ?\\).\n\ | |
5266 | This variable affects the built-in functions only on Windows,\n\ | |
5267 | on other platforms, it is initialized so that Lisp code can find out\n\ | |
5268 | what the normal separator is."); | |
2e34157c | 5269 | XSETFASTINT (Vdirectory_sep_char, '/'); |
199607e4 | 5270 | |
1d1826db RS |
5271 | DEFVAR_LISP ("file-name-handler-alist", &Vfile_name_handler_alist, |
5272 | "*Alist of elements (REGEXP . HANDLER) for file names handled specially.\n\ | |
5273 | If a file name matches REGEXP, then all I/O on that file is done by calling\n\ | |
5274 | HANDLER.\n\ | |
5275 | \n\ | |
5276 | The first argument given to HANDLER is the name of the I/O primitive\n\ | |
5277 | to be handled; the remaining arguments are the arguments that were\n\ | |
5278 | passed to that primitive. For example, if you do\n\ | |
5279 | (file-exists-p FILENAME)\n\ | |
5280 | and FILENAME is handled by HANDLER, then HANDLER is called like this:\n\ | |
642ef245 JB |
5281 | (funcall HANDLER 'file-exists-p FILENAME)\n\ |
5282 | The function `find-file-name-handler' checks this list for a handler\n\ | |
5283 | for its argument."); | |
09121adc RS |
5284 | Vfile_name_handler_alist = Qnil; |
5285 | ||
0414b394 KH |
5286 | DEFVAR_LISP ("set-auto-coding-function", |
5287 | &Vset_auto_coding_function, | |
7fc4808e | 5288 | "If non-nil, a function to call to decide a coding system of file.\n\ |
0414b394 KH |
5289 | One argument is passed to this function: the string of concatination\n\ |
5290 | or the heading 1K-byte and the tailing 3K-byte of a file to be read.\n\ | |
7fc4808e KH |
5291 | This function should return a coding system to decode the file contents\n\ |
5292 | specified in the heading lines with the format:\n\ | |
0414b394 KH |
5293 | -*- ... coding: CODING-SYSTEM; ... -*-\n\ |
5294 | or local variable spec of the tailing lines with `coding:' tag."); | |
5295 | Vset_auto_coding_function = Qnil; | |
c9e82392 | 5296 | |
d6a3cc15 | 5297 | DEFVAR_LISP ("after-insert-file-functions", &Vafter_insert_file_functions, |
246cfea5 RS |
5298 | "A list of functions to be called at the end of `insert-file-contents'.\n\ |
5299 | Each is passed one argument, the number of bytes inserted. It should return\n\ | |
5300 | the new byte count, and leave point the same. If `insert-file-contents' is\n\ | |
5301 | intercepted by a handler from `file-name-handler-alist', that handler is\n\ | |
d6a3cc15 RS |
5302 | responsible for calling the after-insert-file-functions if appropriate."); |
5303 | Vafter_insert_file_functions = Qnil; | |
5304 | ||
5305 | DEFVAR_LISP ("write-region-annotate-functions", &Vwrite_region_annotate_functions, | |
246cfea5 | 5306 | "A list of functions to be called at the start of `write-region'.\n\ |
568aa585 RS |
5307 | Each is passed two arguments, START and END as for `write-region'.\n\ |
5308 | These are usually two numbers but not always; see the documentation\n\ | |
5309 | for `write-region'. The function should return a list of pairs\n\ | |
5310 | of the form (POSITION . STRING), consisting of strings to be effectively\n\ | |
246cfea5 RS |
5311 | inserted at the specified positions of the file being written (1 means to\n\ |
5312 | insert before the first byte written). The POSITIONs must be sorted into\n\ | |
5313 | increasing order. If there are several functions in the list, the several\n\ | |
d6a3cc15 RS |
5314 | lists are merged destructively."); |
5315 | Vwrite_region_annotate_functions = Qnil; | |
5316 | ||
6fc6f94b RS |
5317 | DEFVAR_LISP ("write-region-annotations-so-far", |
5318 | &Vwrite_region_annotations_so_far, | |
5319 | "When an annotation function is called, this holds the previous annotations.\n\ | |
5320 | These are the annotations made by other annotation functions\n\ | |
5321 | that were already called. See also `write-region-annotate-functions'."); | |
5322 | Vwrite_region_annotations_so_far = Qnil; | |
5323 | ||
82c2d839 | 5324 | DEFVAR_LISP ("inhibit-file-name-handlers", &Vinhibit_file_name_handlers, |
268466ed | 5325 | "A list of file name handlers that temporarily should not be used.\n\ |
e3e86241 | 5326 | This applies only to the operation `inhibit-file-name-operation'."); |
82c2d839 RS |
5327 | Vinhibit_file_name_handlers = Qnil; |
5328 | ||
a65970a0 RS |
5329 | DEFVAR_LISP ("inhibit-file-name-operation", &Vinhibit_file_name_operation, |
5330 | "The operation for which `inhibit-file-name-handlers' is applicable."); | |
5331 | Vinhibit_file_name_operation = Qnil; | |
5332 | ||
e54d3b5d | 5333 | DEFVAR_LISP ("auto-save-list-file-name", &Vauto_save_list_file_name, |
51931aca KH |
5334 | "File name in which we write a list of all auto save file names.\n\ |
5335 | This variable is initialized automatically from `auto-save-list-file-prefix'\n\ | |
5336 | shortly after Emacs reads your `.emacs' file, if you have not yet given it\n\ | |
5337 | a non-nil value."); | |
e54d3b5d RS |
5338 | Vauto_save_list_file_name = Qnil; |
5339 | ||
642ef245 | 5340 | defsubr (&Sfind_file_name_handler); |
570d7624 JB |
5341 | defsubr (&Sfile_name_directory); |
5342 | defsubr (&Sfile_name_nondirectory); | |
642ef245 | 5343 | defsubr (&Sunhandled_file_name_directory); |
570d7624 JB |
5344 | defsubr (&Sfile_name_as_directory); |
5345 | defsubr (&Sdirectory_file_name); | |
5346 | defsubr (&Smake_temp_name); | |
5347 | defsubr (&Sexpand_file_name); | |
5348 | defsubr (&Ssubstitute_in_file_name); | |
5349 | defsubr (&Scopy_file); | |
9bbe01fb | 5350 | defsubr (&Smake_directory_internal); |
aa734e17 | 5351 | defsubr (&Sdelete_directory); |
570d7624 JB |
5352 | defsubr (&Sdelete_file); |
5353 | defsubr (&Srename_file); | |
5354 | defsubr (&Sadd_name_to_file); | |
5355 | #ifdef S_IFLNK | |
5356 | defsubr (&Smake_symbolic_link); | |
5357 | #endif /* S_IFLNK */ | |
5358 | #ifdef VMS | |
5359 | defsubr (&Sdefine_logical_name); | |
5360 | #endif /* VMS */ | |
5361 | #ifdef HPUX_NET | |
5362 | defsubr (&Ssysnetunam); | |
5363 | #endif /* HPUX_NET */ | |
5364 | defsubr (&Sfile_name_absolute_p); | |
5365 | defsubr (&Sfile_exists_p); | |
5366 | defsubr (&Sfile_executable_p); | |
5367 | defsubr (&Sfile_readable_p); | |
5368 | defsubr (&Sfile_writable_p); | |
1f8653eb | 5369 | defsubr (&Saccess_file); |
570d7624 JB |
5370 | defsubr (&Sfile_symlink_p); |
5371 | defsubr (&Sfile_directory_p); | |
b72dea2a | 5372 | defsubr (&Sfile_accessible_directory_p); |
f793dc6c | 5373 | defsubr (&Sfile_regular_p); |
570d7624 JB |
5374 | defsubr (&Sfile_modes); |
5375 | defsubr (&Sset_file_modes); | |
c24e9a53 RS |
5376 | defsubr (&Sset_default_file_modes); |
5377 | defsubr (&Sdefault_file_modes); | |
570d7624 JB |
5378 | defsubr (&Sfile_newer_than_file_p); |
5379 | defsubr (&Sinsert_file_contents); | |
5380 | defsubr (&Swrite_region); | |
d6a3cc15 | 5381 | defsubr (&Scar_less_than_car); |
570d7624 JB |
5382 | defsubr (&Sverify_visited_file_modtime); |
5383 | defsubr (&Sclear_visited_file_modtime); | |
f5d5eccf | 5384 | defsubr (&Svisited_file_modtime); |
570d7624 JB |
5385 | defsubr (&Sset_visited_file_modtime); |
5386 | defsubr (&Sdo_auto_save); | |
5387 | defsubr (&Sset_buffer_auto_saved); | |
b60247d9 | 5388 | defsubr (&Sclear_buffer_auto_save_failure); |
570d7624 JB |
5389 | defsubr (&Srecent_auto_save_p); |
5390 | ||
5391 | defsubr (&Sread_file_name_internal); | |
5392 | defsubr (&Sread_file_name); | |
85ffea93 | 5393 | |
483a2e10 | 5394 | #ifdef unix |
85ffea93 | 5395 | defsubr (&Sunix_sync); |
483a2e10 | 5396 | #endif |
570d7624 | 5397 | } |