Commit | Line | Data |
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570d7624 | 1 | /* File IO for GNU Emacs. |
ce97267f | 2 | Copyright (C) 1985, 1986, 1987, 1988, 1993, 1994 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 | |
18 | the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA. */ | |
19 | ||
18160b98 | 20 | #include <config.h> |
570d7624 JB |
21 | |
22 | #include <sys/types.h> | |
23 | #include <sys/stat.h> | |
bfb61299 | 24 | |
29beb080 RS |
25 | #ifdef HAVE_UNISTD_H |
26 | #include <unistd.h> | |
27 | #endif | |
28 | ||
f73b0ada BF |
29 | #if !defined (S_ISLNK) && defined (S_IFLNK) |
30 | # define S_ISLNK(m) (((m) & S_IFMT) == S_IFLNK) | |
31 | #endif | |
32 | ||
33 | #if !defined (S_ISREG) && defined (S_IFREG) | |
34 | # define S_ISREG(m) (((m) & S_IFMT) == S_IFREG) | |
35 | #endif | |
36 | ||
bfb61299 | 37 | #ifdef VMS |
de5bf5d3 | 38 | #include "vms-pwd.h" |
bfb61299 | 39 | #else |
570d7624 | 40 | #include <pwd.h> |
bfb61299 JB |
41 | #endif |
42 | ||
4c3c22f3 RS |
43 | #ifdef MSDOS |
44 | #include "msdos.h" | |
45 | #include <sys/param.h> | |
46 | #endif | |
47 | ||
570d7624 | 48 | #include <ctype.h> |
bfb61299 JB |
49 | |
50 | #ifdef VMS | |
3d9f5ce2 | 51 | #include "vmsdir.h" |
bfb61299 JB |
52 | #include <perror.h> |
53 | #include <stddef.h> | |
54 | #include <string.h> | |
bfb61299 JB |
55 | #endif |
56 | ||
570d7624 JB |
57 | #include <errno.h> |
58 | ||
bfb61299 | 59 | #ifndef vax11c |
570d7624 | 60 | extern int errno; |
570d7624 JB |
61 | #endif |
62 | ||
ce97267f | 63 | extern char *strerror (); |
570d7624 JB |
64 | |
65 | #ifdef APOLLO | |
66 | #include <sys/time.h> | |
67 | #endif | |
68 | ||
6e23c83e JB |
69 | #ifndef USG |
70 | #ifndef VMS | |
71 | #ifndef BSD4_1 | |
72 | #define HAVE_FSYNC | |
73 | #endif | |
74 | #endif | |
75 | #endif | |
76 | ||
570d7624 | 77 | #include "lisp.h" |
8d4e077b | 78 | #include "intervals.h" |
570d7624 JB |
79 | #include "buffer.h" |
80 | #include "window.h" | |
81 | ||
82 | #ifdef VMS | |
570d7624 JB |
83 | #include <file.h> |
84 | #include <rmsdef.h> | |
85 | #include <fab.h> | |
86 | #include <nam.h> | |
87 | #endif | |
88 | ||
de5bf5d3 | 89 | #include "systime.h" |
570d7624 JB |
90 | |
91 | #ifdef HPUX | |
92 | #include <netio.h> | |
9b7828a5 | 93 | #ifndef HPUX8 |
47e7b9e5 | 94 | #ifndef HPUX9 |
570d7624 JB |
95 | #include <errnet.h> |
96 | #endif | |
9b7828a5 | 97 | #endif |
47e7b9e5 | 98 | #endif |
570d7624 JB |
99 | |
100 | #ifndef O_WRONLY | |
101 | #define O_WRONLY 1 | |
102 | #endif | |
103 | ||
4018b5ef RS |
104 | #ifndef O_RDONLY |
105 | #define O_RDONLY 0 | |
106 | #endif | |
107 | ||
570d7624 JB |
108 | #define min(a, b) ((a) < (b) ? (a) : (b)) |
109 | #define max(a, b) ((a) > (b) ? (a) : (b)) | |
110 | ||
111 | /* Nonzero during writing of auto-save files */ | |
112 | int auto_saving; | |
113 | ||
114 | /* Set by auto_save_1 to mode of original file so Fwrite_region will create | |
115 | a new file with the same mode as the original */ | |
116 | int auto_save_mode_bits; | |
117 | ||
32f4334d RS |
118 | /* Alist of elements (REGEXP . HANDLER) for file names |
119 | whose I/O is done with a special handler. */ | |
120 | Lisp_Object Vfile_name_handler_alist; | |
121 | ||
d6a3cc15 RS |
122 | /* Functions to be called to process text properties in inserted file. */ |
123 | Lisp_Object Vafter_insert_file_functions; | |
124 | ||
125 | /* Functions to be called to create text property annotations for file. */ | |
126 | Lisp_Object Vwrite_region_annotate_functions; | |
127 | ||
6fc6f94b RS |
128 | /* During build_annotations, each time an annotation function is called, |
129 | this holds the annotations made by the previous functions. */ | |
130 | Lisp_Object Vwrite_region_annotations_so_far; | |
131 | ||
e54d3b5d RS |
132 | /* File name in which we write a list of all our auto save files. */ |
133 | Lisp_Object Vauto_save_list_file_name; | |
134 | ||
570d7624 JB |
135 | /* Nonzero means, when reading a filename in the minibuffer, |
136 | start out by inserting the default directory into the minibuffer. */ | |
137 | int insert_default_directory; | |
138 | ||
139 | /* On VMS, nonzero means write new files with record format stmlf. | |
140 | Zero means use var format. */ | |
141 | int vms_stmlf_recfm; | |
142 | ||
a65970a0 RS |
143 | /* These variables describe handlers that have "already" had a chance |
144 | to handle the current operation. | |
145 | ||
146 | Vinhibit_file_name_handlers is a list of file name handlers. | |
147 | Vinhibit_file_name_operation is the operation being handled. | |
148 | If we try to handle that operation, we ignore those handlers. */ | |
149 | ||
82c2d839 | 150 | static Lisp_Object Vinhibit_file_name_handlers; |
a65970a0 | 151 | static Lisp_Object Vinhibit_file_name_operation; |
82c2d839 | 152 | |
570d7624 JB |
153 | Lisp_Object Qfile_error, Qfile_already_exists; |
154 | ||
15c65264 RS |
155 | Lisp_Object Qfile_name_history; |
156 | ||
d6a3cc15 RS |
157 | Lisp_Object Qcar_less_than_car; |
158 | ||
570d7624 JB |
159 | report_file_error (string, data) |
160 | char *string; | |
161 | Lisp_Object data; | |
162 | { | |
163 | Lisp_Object errstring; | |
164 | ||
a1f17b2d | 165 | errstring = build_string (strerror (errno)); |
570d7624 JB |
166 | |
167 | /* System error messages are capitalized. Downcase the initial | |
168 | unless it is followed by a slash. */ | |
169 | if (XSTRING (errstring)->data[1] != '/') | |
170 | XSTRING (errstring)->data[0] = DOWNCASE (XSTRING (errstring)->data[0]); | |
171 | ||
172 | while (1) | |
173 | Fsignal (Qfile_error, | |
174 | Fcons (build_string (string), Fcons (errstring, data))); | |
175 | } | |
b5148e85 RS |
176 | |
177 | close_file_unwind (fd) | |
178 | Lisp_Object fd; | |
179 | { | |
180 | close (XFASTINT (fd)); | |
181 | } | |
a1d2b64a RS |
182 | |
183 | /* Restore point, having saved it as a marker. */ | |
184 | ||
185 | restore_point_unwind (location) | |
186 | Lisp_Object location; | |
187 | { | |
188 | SET_PT (marker_position (location)); | |
189 | Fset_marker (location, Qnil, Qnil); | |
190 | } | |
570d7624 | 191 | \f |
0bf2eed2 RS |
192 | Lisp_Object Qexpand_file_name; |
193 | Lisp_Object Qdirectory_file_name; | |
194 | Lisp_Object Qfile_name_directory; | |
195 | Lisp_Object Qfile_name_nondirectory; | |
642ef245 | 196 | Lisp_Object Qunhandled_file_name_directory; |
0bf2eed2 | 197 | Lisp_Object Qfile_name_as_directory; |
32f4334d | 198 | Lisp_Object Qcopy_file; |
a6e6e718 | 199 | Lisp_Object Qmake_directory_internal; |
32f4334d RS |
200 | Lisp_Object Qdelete_directory; |
201 | Lisp_Object Qdelete_file; | |
202 | Lisp_Object Qrename_file; | |
203 | Lisp_Object Qadd_name_to_file; | |
204 | Lisp_Object Qmake_symbolic_link; | |
205 | Lisp_Object Qfile_exists_p; | |
206 | Lisp_Object Qfile_executable_p; | |
207 | Lisp_Object Qfile_readable_p; | |
208 | Lisp_Object Qfile_symlink_p; | |
209 | Lisp_Object Qfile_writable_p; | |
210 | Lisp_Object Qfile_directory_p; | |
211 | Lisp_Object Qfile_accessible_directory_p; | |
212 | Lisp_Object Qfile_modes; | |
213 | Lisp_Object Qset_file_modes; | |
214 | Lisp_Object Qfile_newer_than_file_p; | |
215 | Lisp_Object Qinsert_file_contents; | |
216 | Lisp_Object Qwrite_region; | |
217 | Lisp_Object Qverify_visited_file_modtime; | |
3ec46acd | 218 | Lisp_Object Qset_visited_file_modtime; |
32f4334d | 219 | |
49307295 KH |
220 | DEFUN ("find-file-name-handler", Ffind_file_name_handler, Sfind_file_name_handler, 2, 2, 0, |
221 | "Return FILENAME's handler function for OPERATION, if it has one.\n\ | |
642ef245 JB |
222 | Otherwise, return nil.\n\ |
223 | A file name is handled if one of the regular expressions in\n\ | |
82c2d839 | 224 | `file-name-handler-alist' matches it.\n\n\ |
a65970a0 RS |
225 | If OPERATION equals `inhibit-file-name-operation', then we ignore\n\ |
226 | any handlers that are members of `inhibit-file-name-handlers',\n\ | |
227 | but we still do run any other handlers. This lets handlers\n\ | |
82c2d839 | 228 | use the standard functions without calling themselves recursively.") |
49307295 KH |
229 | (filename, operation) |
230 | Lisp_Object filename, operation; | |
32f4334d | 231 | { |
642ef245 | 232 | /* This function must not munge the match data. */ |
a65970a0 | 233 | Lisp_Object chain, inhibited_handlers; |
642ef245 | 234 | |
e4432095 JB |
235 | CHECK_STRING (filename, 0); |
236 | ||
a65970a0 RS |
237 | if (EQ (operation, Vinhibit_file_name_operation)) |
238 | inhibited_handlers = Vinhibit_file_name_handlers; | |
239 | else | |
240 | inhibited_handlers = Qnil; | |
82c2d839 | 241 | |
3eac9910 | 242 | for (chain = Vfile_name_handler_alist; XTYPE (chain) == Lisp_Cons; |
32f4334d RS |
243 | chain = XCONS (chain)->cdr) |
244 | { | |
245 | Lisp_Object elt; | |
246 | elt = XCONS (chain)->car; | |
247 | if (XTYPE (elt) == Lisp_Cons) | |
248 | { | |
249 | Lisp_Object string; | |
250 | string = XCONS (elt)->car; | |
251 | if (XTYPE (string) == Lisp_String | |
09121adc | 252 | && fast_string_match (string, filename) >= 0) |
a65970a0 RS |
253 | { |
254 | Lisp_Object handler, tem; | |
255 | ||
256 | handler = XCONS (elt)->cdr; | |
257 | tem = Fmemq (handler, inhibited_handlers); | |
258 | if (NILP (tem)) | |
259 | return handler; | |
260 | } | |
32f4334d | 261 | } |
642ef245 JB |
262 | |
263 | QUIT; | |
32f4334d RS |
264 | } |
265 | return Qnil; | |
266 | } | |
267 | \f | |
570d7624 JB |
268 | DEFUN ("file-name-directory", Ffile_name_directory, Sfile_name_directory, |
269 | 1, 1, 0, | |
270 | "Return the directory component in file name NAME.\n\ | |
271 | Return nil if NAME does not include a directory.\n\ | |
272 | Otherwise return a directory spec.\n\ | |
273 | Given a Unix syntax file name, returns a string ending in slash;\n\ | |
274 | on VMS, perhaps instead a string ending in `:', `]' or `>'.") | |
275 | (file) | |
276 | Lisp_Object file; | |
277 | { | |
278 | register unsigned char *beg; | |
279 | register unsigned char *p; | |
0bf2eed2 | 280 | Lisp_Object handler; |
570d7624 JB |
281 | |
282 | CHECK_STRING (file, 0); | |
283 | ||
0bf2eed2 RS |
284 | /* If the file name has special constructs in it, |
285 | call the corresponding file handler. */ | |
49307295 | 286 | handler = Ffind_file_name_handler (file, Qfile_name_directory); |
0bf2eed2 RS |
287 | if (!NILP (handler)) |
288 | return call2 (handler, Qfile_name_directory, file); | |
289 | ||
4c3c22f3 RS |
290 | #ifdef FILE_SYSTEM_CASE |
291 | file = FILE_SYSTEM_CASE (file); | |
292 | #endif | |
570d7624 JB |
293 | beg = XSTRING (file)->data; |
294 | p = beg + XSTRING (file)->size; | |
295 | ||
296 | while (p != beg && p[-1] != '/' | |
297 | #ifdef VMS | |
298 | && p[-1] != ':' && p[-1] != ']' && p[-1] != '>' | |
299 | #endif /* VMS */ | |
4c3c22f3 | 300 | #ifdef MSDOS |
a5a1cc06 | 301 | && p[-1] != ':' && p[-1] != '\\' |
4c3c22f3 | 302 | #endif |
570d7624 JB |
303 | ) p--; |
304 | ||
305 | if (p == beg) | |
306 | return Qnil; | |
4c3c22f3 RS |
307 | #ifdef MSDOS |
308 | /* Expansion of "c:" to drive and default directory. */ | |
309 | if (p == beg + 2 && beg[1] == ':') | |
310 | { | |
311 | int drive = (*beg) - 'a'; | |
312 | /* MAXPATHLEN+1 is guaranteed to be enough space for getdefdir. */ | |
313 | unsigned char *res = alloca (MAXPATHLEN + 5); | |
314 | if (getdefdir (drive + 1, res + 2)) | |
315 | { | |
316 | res[0] = drive + 'a'; | |
317 | res[1] = ':'; | |
318 | if (res[strlen (res) - 1] != '/') | |
319 | strcat (res, "/"); | |
320 | beg = res; | |
321 | p = beg + strlen (beg); | |
322 | } | |
323 | } | |
324 | #endif | |
570d7624 JB |
325 | return make_string (beg, p - beg); |
326 | } | |
327 | ||
328 | DEFUN ("file-name-nondirectory", Ffile_name_nondirectory, Sfile_name_nondirectory, | |
329 | 1, 1, 0, | |
330 | "Return file name NAME sans its directory.\n\ | |
331 | For example, in a Unix-syntax file name,\n\ | |
332 | this is everything after the last slash,\n\ | |
333 | or the entire name if it contains no slash.") | |
334 | (file) | |
335 | Lisp_Object file; | |
336 | { | |
337 | register unsigned char *beg, *p, *end; | |
0bf2eed2 | 338 | Lisp_Object handler; |
570d7624 JB |
339 | |
340 | CHECK_STRING (file, 0); | |
341 | ||
0bf2eed2 RS |
342 | /* If the file name has special constructs in it, |
343 | call the corresponding file handler. */ | |
49307295 | 344 | handler = Ffind_file_name_handler (file, Qfile_name_nondirectory); |
0bf2eed2 RS |
345 | if (!NILP (handler)) |
346 | return call2 (handler, Qfile_name_nondirectory, file); | |
347 | ||
570d7624 JB |
348 | beg = XSTRING (file)->data; |
349 | end = p = beg + XSTRING (file)->size; | |
350 | ||
351 | while (p != beg && p[-1] != '/' | |
352 | #ifdef VMS | |
353 | && p[-1] != ':' && p[-1] != ']' && p[-1] != '>' | |
354 | #endif /* VMS */ | |
4c3c22f3 | 355 | #ifdef MSDOS |
a5a1cc06 | 356 | && p[-1] != ':' && p[-1] != '\\' |
4c3c22f3 | 357 | #endif |
570d7624 JB |
358 | ) p--; |
359 | ||
360 | return make_string (p, end - p); | |
361 | } | |
642ef245 JB |
362 | |
363 | DEFUN ("unhandled-file-name-directory", Funhandled_file_name_directory, Sunhandled_file_name_directory, 1, 1, 0, | |
364 | "Return a directly usable directory name somehow associated with FILENAME.\n\ | |
365 | A `directly usable' directory name is one that may be used without the\n\ | |
366 | intervention of any file handler.\n\ | |
367 | If FILENAME is a directly usable file itself, return\n\ | |
368 | (file-name-directory FILENAME).\n\ | |
369 | The `call-process' and `start-process' functions use this function to\n\ | |
370 | get a current directory to run processes in.") | |
371 | (filename) | |
372 | Lisp_Object filename; | |
373 | { | |
374 | Lisp_Object handler; | |
375 | ||
376 | /* If the file name has special constructs in it, | |
377 | call the corresponding file handler. */ | |
49307295 | 378 | handler = Ffind_file_name_handler (filename, Qunhandled_file_name_directory); |
642ef245 JB |
379 | if (!NILP (handler)) |
380 | return call2 (handler, Qunhandled_file_name_directory, filename); | |
381 | ||
382 | return Ffile_name_directory (filename); | |
383 | } | |
384 | ||
570d7624 JB |
385 | \f |
386 | char * | |
387 | file_name_as_directory (out, in) | |
388 | char *out, *in; | |
389 | { | |
390 | int size = strlen (in) - 1; | |
391 | ||
392 | strcpy (out, in); | |
393 | ||
394 | #ifdef VMS | |
395 | /* Is it already a directory string? */ | |
396 | if (in[size] == ':' || in[size] == ']' || in[size] == '>') | |
397 | return out; | |
398 | /* Is it a VMS directory file name? If so, hack VMS syntax. */ | |
399 | else if (! index (in, '/') | |
400 | && ((size > 3 && ! strcmp (&in[size - 3], ".DIR")) | |
401 | || (size > 3 && ! strcmp (&in[size - 3], ".dir")) | |
402 | || (size > 5 && (! strncmp (&in[size - 5], ".DIR", 4) | |
403 | || ! strncmp (&in[size - 5], ".dir", 4)) | |
404 | && (in[size - 1] == '.' || in[size - 1] == ';') | |
405 | && in[size] == '1'))) | |
406 | { | |
407 | register char *p, *dot; | |
408 | char brack; | |
409 | ||
410 | /* x.dir -> [.x] | |
411 | dir:x.dir --> dir:[x] | |
412 | dir:[x]y.dir --> dir:[x.y] */ | |
413 | p = in + size; | |
414 | while (p != in && *p != ':' && *p != '>' && *p != ']') p--; | |
415 | if (p != in) | |
416 | { | |
417 | strncpy (out, in, p - in); | |
418 | out[p - in] = '\0'; | |
419 | if (*p == ':') | |
420 | { | |
421 | brack = ']'; | |
422 | strcat (out, ":["); | |
423 | } | |
424 | else | |
425 | { | |
426 | brack = *p; | |
427 | strcat (out, "."); | |
428 | } | |
429 | p++; | |
430 | } | |
431 | else | |
432 | { | |
433 | brack = ']'; | |
434 | strcpy (out, "[."); | |
435 | } | |
bfb61299 JB |
436 | dot = index (p, '.'); |
437 | if (dot) | |
570d7624 JB |
438 | { |
439 | /* blindly remove any extension */ | |
440 | size = strlen (out) + (dot - p); | |
441 | strncat (out, p, dot - p); | |
442 | } | |
443 | else | |
444 | { | |
445 | strcat (out, p); | |
446 | size = strlen (out); | |
447 | } | |
448 | out[size++] = brack; | |
449 | out[size] = '\0'; | |
450 | } | |
451 | #else /* not VMS */ | |
452 | /* For Unix syntax, Append a slash if necessary */ | |
4c3c22f3 | 453 | #ifdef MSDOS |
a5a1cc06 | 454 | if (out[size] != ':' && out[size] != '/' && out[size] != '\\') |
4c3c22f3 | 455 | #else |
570d7624 | 456 | if (out[size] != '/') |
4c3c22f3 | 457 | #endif |
570d7624 JB |
458 | strcat (out, "/"); |
459 | #endif /* not VMS */ | |
460 | return out; | |
461 | } | |
462 | ||
463 | DEFUN ("file-name-as-directory", Ffile_name_as_directory, | |
464 | Sfile_name_as_directory, 1, 1, 0, | |
465 | "Return a string representing file FILENAME interpreted as a directory.\n\ | |
466 | This operation exists because a directory is also a file, but its name as\n\ | |
467 | a directory is different from its name as a file.\n\ | |
468 | The result can be used as the value of `default-directory'\n\ | |
469 | or passed as second argument to `expand-file-name'.\n\ | |
470 | For a Unix-syntax file name, just appends a slash.\n\ | |
471 | On VMS, converts \"[X]FOO.DIR\" to \"[X.FOO]\", etc.") | |
472 | (file) | |
473 | Lisp_Object file; | |
474 | { | |
475 | char *buf; | |
0bf2eed2 | 476 | Lisp_Object handler; |
570d7624 JB |
477 | |
478 | CHECK_STRING (file, 0); | |
265a9e55 | 479 | if (NILP (file)) |
570d7624 | 480 | return Qnil; |
0bf2eed2 RS |
481 | |
482 | /* If the file name has special constructs in it, | |
483 | call the corresponding file handler. */ | |
49307295 | 484 | handler = Ffind_file_name_handler (file, Qfile_name_as_directory); |
0bf2eed2 RS |
485 | if (!NILP (handler)) |
486 | return call2 (handler, Qfile_name_as_directory, file); | |
487 | ||
570d7624 JB |
488 | buf = (char *) alloca (XSTRING (file)->size + 10); |
489 | return build_string (file_name_as_directory (buf, XSTRING (file)->data)); | |
490 | } | |
491 | \f | |
492 | /* | |
493 | * Convert from directory name to filename. | |
494 | * On VMS: | |
495 | * xyzzy:[mukesh.emacs] => xyzzy:[mukesh]emacs.dir.1 | |
496 | * xyzzy:[mukesh] => xyzzy:[000000]mukesh.dir.1 | |
497 | * On UNIX, it's simple: just make sure there is a terminating / | |
498 | ||
499 | * Value is nonzero if the string output is different from the input. | |
500 | */ | |
501 | ||
502 | directory_file_name (src, dst) | |
503 | char *src, *dst; | |
504 | { | |
505 | long slen; | |
506 | #ifdef VMS | |
507 | long rlen; | |
508 | char * ptr, * rptr; | |
509 | char bracket; | |
510 | struct FAB fab = cc$rms_fab; | |
511 | struct NAM nam = cc$rms_nam; | |
512 | char esa[NAM$C_MAXRSS]; | |
513 | #endif /* VMS */ | |
514 | ||
515 | slen = strlen (src); | |
516 | #ifdef VMS | |
517 | if (! index (src, '/') | |
518 | && (src[slen - 1] == ']' | |
519 | || src[slen - 1] == ':' | |
520 | || src[slen - 1] == '>')) | |
521 | { | |
522 | /* VMS style - convert [x.y.z] to [x.y]z, [x] to [000000]x */ | |
523 | fab.fab$l_fna = src; | |
524 | fab.fab$b_fns = slen; | |
525 | fab.fab$l_nam = &nam; | |
526 | fab.fab$l_fop = FAB$M_NAM; | |
527 | ||
528 | nam.nam$l_esa = esa; | |
529 | nam.nam$b_ess = sizeof esa; | |
530 | nam.nam$b_nop |= NAM$M_SYNCHK; | |
531 | ||
532 | /* We call SYS$PARSE to handle such things as [--] for us. */ | |
533 | if (SYS$PARSE(&fab, 0, 0) == RMS$_NORMAL) | |
534 | { | |
535 | slen = nam.nam$b_esl; | |
536 | if (esa[slen - 1] == ';' && esa[slen - 2] == '.') | |
537 | slen -= 2; | |
538 | esa[slen] = '\0'; | |
539 | src = esa; | |
540 | } | |
541 | if (src[slen - 1] != ']' && src[slen - 1] != '>') | |
542 | { | |
543 | /* what about when we have logical_name:???? */ | |
544 | if (src[slen - 1] == ':') | |
545 | { /* Xlate logical name and see what we get */ | |
546 | ptr = strcpy (dst, src); /* upper case for getenv */ | |
547 | while (*ptr) | |
548 | { | |
549 | if ('a' <= *ptr && *ptr <= 'z') | |
550 | *ptr -= 040; | |
551 | ptr++; | |
552 | } | |
553 | dst[slen - 1] = 0; /* remove colon */ | |
554 | if (!(src = egetenv (dst))) | |
555 | return 0; | |
556 | /* should we jump to the beginning of this procedure? | |
557 | Good points: allows us to use logical names that xlate | |
558 | to Unix names, | |
559 | Bad points: can be a problem if we just translated to a device | |
560 | name... | |
561 | For now, I'll punt and always expect VMS names, and hope for | |
562 | the best! */ | |
563 | slen = strlen (src); | |
564 | if (src[slen - 1] != ']' && src[slen - 1] != '>') | |
565 | { /* no recursion here! */ | |
566 | strcpy (dst, src); | |
567 | return 0; | |
568 | } | |
569 | } | |
570 | else | |
571 | { /* not a directory spec */ | |
572 | strcpy (dst, src); | |
573 | return 0; | |
574 | } | |
575 | } | |
576 | bracket = src[slen - 1]; | |
577 | ||
578 | /* If bracket is ']' or '>', bracket - 2 is the corresponding | |
579 | opening bracket. */ | |
bfb61299 JB |
580 | ptr = index (src, bracket - 2); |
581 | if (ptr == 0) | |
570d7624 JB |
582 | { /* no opening bracket */ |
583 | strcpy (dst, src); | |
584 | return 0; | |
585 | } | |
586 | if (!(rptr = rindex (src, '.'))) | |
587 | rptr = ptr; | |
588 | slen = rptr - src; | |
589 | strncpy (dst, src, slen); | |
590 | dst[slen] = '\0'; | |
591 | if (*rptr == '.') | |
592 | { | |
593 | dst[slen++] = bracket; | |
594 | dst[slen] = '\0'; | |
595 | } | |
596 | else | |
597 | { | |
598 | /* If we have the top-level of a rooted directory (i.e. xx:[000000]), | |
599 | then translate the device and recurse. */ | |
600 | if (dst[slen - 1] == ':' | |
601 | && dst[slen - 2] != ':' /* skip decnet nodes */ | |
602 | && strcmp(src + slen, "[000000]") == 0) | |
603 | { | |
604 | dst[slen - 1] = '\0'; | |
605 | if ((ptr = egetenv (dst)) | |
606 | && (rlen = strlen (ptr) - 1) > 0 | |
607 | && (ptr[rlen] == ']' || ptr[rlen] == '>') | |
608 | && ptr[rlen - 1] == '.') | |
609 | { | |
72b21817 RS |
610 | char * buf = (char *) alloca (strlen (ptr) + 1); |
611 | strcpy (buf, ptr); | |
612 | buf[rlen - 1] = ']'; | |
613 | buf[rlen] = '\0'; | |
614 | return directory_file_name (buf, dst); | |
570d7624 JB |
615 | } |
616 | else | |
617 | dst[slen - 1] = ':'; | |
618 | } | |
619 | strcat (dst, "[000000]"); | |
620 | slen += 8; | |
621 | } | |
622 | rptr++; | |
623 | rlen = strlen (rptr) - 1; | |
624 | strncat (dst, rptr, rlen); | |
625 | dst[slen + rlen] = '\0'; | |
626 | strcat (dst, ".DIR.1"); | |
627 | return 1; | |
628 | } | |
629 | #endif /* VMS */ | |
630 | /* Process as Unix format: just remove any final slash. | |
631 | But leave "/" unchanged; do not change it to "". */ | |
632 | strcpy (dst, src); | |
4c3c22f3 | 633 | if (slen > 1 |
4c3c22f3 | 634 | #ifdef MSDOS |
a5a1cc06 | 635 | && (dst[slen - 1] == '/' || dst[slen - 1] == '/') |
4c3c22f3 | 636 | && dst[slen - 2] != ':' |
a5a1cc06 RS |
637 | #else |
638 | && dst[slen - 1] == '/' | |
4c3c22f3 RS |
639 | #endif |
640 | ) | |
570d7624 JB |
641 | dst[slen - 1] = 0; |
642 | return 1; | |
643 | } | |
644 | ||
645 | DEFUN ("directory-file-name", Fdirectory_file_name, Sdirectory_file_name, | |
646 | 1, 1, 0, | |
647 | "Returns the file name of the directory named DIR.\n\ | |
648 | This is the name of the file that holds the data for the directory DIR.\n\ | |
649 | This operation exists because a directory is also a file, but its name as\n\ | |
650 | a directory is different from its name as a file.\n\ | |
651 | In Unix-syntax, this function just removes the final slash.\n\ | |
652 | On VMS, given a VMS-syntax directory name such as \"[X.Y]\",\n\ | |
653 | it returns a file name such as \"[X]Y.DIR.1\".") | |
654 | (directory) | |
655 | Lisp_Object directory; | |
656 | { | |
657 | char *buf; | |
0bf2eed2 | 658 | Lisp_Object handler; |
570d7624 JB |
659 | |
660 | CHECK_STRING (directory, 0); | |
661 | ||
265a9e55 | 662 | if (NILP (directory)) |
570d7624 | 663 | return Qnil; |
0bf2eed2 RS |
664 | |
665 | /* If the file name has special constructs in it, | |
666 | call the corresponding file handler. */ | |
49307295 | 667 | handler = Ffind_file_name_handler (directory, Qdirectory_file_name); |
0bf2eed2 RS |
668 | if (!NILP (handler)) |
669 | return call2 (handler, Qdirectory_file_name, directory); | |
670 | ||
570d7624 JB |
671 | #ifdef VMS |
672 | /* 20 extra chars is insufficient for VMS, since we might perform a | |
673 | logical name translation. an equivalence string can be up to 255 | |
674 | chars long, so grab that much extra space... - sss */ | |
675 | buf = (char *) alloca (XSTRING (directory)->size + 20 + 255); | |
676 | #else | |
677 | buf = (char *) alloca (XSTRING (directory)->size + 20); | |
678 | #endif | |
679 | directory_file_name (XSTRING (directory)->data, buf); | |
680 | return build_string (buf); | |
681 | } | |
682 | ||
683 | DEFUN ("make-temp-name", Fmake_temp_name, Smake_temp_name, 1, 1, 0, | |
684 | "Generate temporary file name (string) starting with PREFIX (a string).\n\ | |
685 | The Emacs process number forms part of the result,\n\ | |
686 | so there is no danger of generating a name being used by another process.") | |
687 | (prefix) | |
688 | Lisp_Object prefix; | |
689 | { | |
690 | Lisp_Object val; | |
691 | val = concat2 (prefix, build_string ("XXXXXX")); | |
692 | mktemp (XSTRING (val)->data); | |
693 | return val; | |
694 | } | |
695 | \f | |
696 | DEFUN ("expand-file-name", Fexpand_file_name, Sexpand_file_name, 1, 2, 0, | |
697 | "Convert FILENAME to absolute, and canonicalize it.\n\ | |
698 | Second arg DEFAULT is directory to start with if FILENAME is relative\n\ | |
699 | (does not start with slash); if DEFAULT is nil or missing,\n\ | |
700 | the current buffer's value of default-directory is used.\n\ | |
b72dea2a JB |
701 | Path components that are `.' are removed, and \n\ |
702 | path components followed by `..' are removed, along with the `..' itself;\n\ | |
703 | note that these simplifications are done without checking the resulting\n\ | |
704 | paths in the file system.\n\ | |
705 | An initial `~/' expands to your home directory.\n\ | |
706 | An initial `~USER/' expands to USER's home directory.\n\ | |
570d7624 JB |
707 | See also the function `substitute-in-file-name'.") |
708 | (name, defalt) | |
709 | Lisp_Object name, defalt; | |
710 | { | |
711 | unsigned char *nm; | |
712 | ||
713 | register unsigned char *newdir, *p, *o; | |
714 | int tlen; | |
715 | unsigned char *target; | |
716 | struct passwd *pw; | |
570d7624 JB |
717 | #ifdef VMS |
718 | unsigned char * colon = 0; | |
719 | unsigned char * close = 0; | |
720 | unsigned char * slash = 0; | |
721 | unsigned char * brack = 0; | |
722 | int lbrack = 0, rbrack = 0; | |
723 | int dots = 0; | |
724 | #endif /* VMS */ | |
4c3c22f3 RS |
725 | #ifdef MSDOS /* Demacs 1.1.2 91/10/20 Manabu Higashida */ |
726 | int drive = -1; | |
727 | int relpath = 0; | |
728 | unsigned char *tmp, *defdir; | |
729 | #endif | |
0bf2eed2 | 730 | Lisp_Object handler; |
570d7624 JB |
731 | |
732 | CHECK_STRING (name, 0); | |
733 | ||
0bf2eed2 RS |
734 | /* If the file name has special constructs in it, |
735 | call the corresponding file handler. */ | |
49307295 | 736 | handler = Ffind_file_name_handler (name, Qexpand_file_name); |
0bf2eed2 | 737 | if (!NILP (handler)) |
09121adc | 738 | return call3 (handler, Qexpand_file_name, name, defalt); |
0bf2eed2 | 739 | |
4ad827c5 RS |
740 | /* Use the buffer's default-directory if DEFALT is omitted. */ |
741 | if (NILP (defalt)) | |
742 | defalt = current_buffer->directory; | |
743 | CHECK_STRING (defalt, 1); | |
744 | ||
f14b1c68 JB |
745 | /* Make sure DEFALT is properly expanded. |
746 | It would be better to do this down below where we actually use | |
747 | defalt. Unfortunately, calling Fexpand_file_name recursively | |
748 | could invoke GC, and the strings might be relocated. This would | |
749 | be annoying because we have pointers into strings lying around | |
750 | that would need adjusting, and people would add new pointers to | |
751 | the code and forget to adjust them, resulting in intermittent bugs. | |
4ad827c5 RS |
752 | Putting this call here avoids all that crud. |
753 | ||
754 | The EQ test avoids infinite recursion. */ | |
755 | if (! NILP (defalt) && !EQ (defalt, name) | |
756 | /* This saves time in a common case. */ | |
757 | && XSTRING (defalt)->data[0] != '/') | |
f14b1c68 JB |
758 | { |
759 | struct gcpro gcpro1; | |
760 | ||
761 | GCPRO1 (name); | |
762 | defalt = Fexpand_file_name (defalt, Qnil); | |
763 | UNGCPRO; | |
764 | } | |
765 | ||
570d7624 JB |
766 | #ifdef VMS |
767 | /* Filenames on VMS are always upper case. */ | |
768 | name = Fupcase (name); | |
769 | #endif | |
4c3c22f3 RS |
770 | #ifdef FILE_SYSTEM_CASE |
771 | name = FILE_SYSTEM_CASE (name); | |
772 | #endif | |
570d7624 JB |
773 | |
774 | nm = XSTRING (name)->data; | |
775 | ||
4c3c22f3 | 776 | #ifdef MSDOS |
a5a1cc06 RS |
777 | /* First map all backslashes to slashes. */ |
778 | dostounix_filename (nm = strcpy (alloca (strlen (nm) + 1), nm)); | |
779 | ||
780 | /* Now strip drive name. */ | |
4c3c22f3 RS |
781 | { |
782 | unsigned char *colon = rindex (nm, ':'); | |
783 | if (colon) | |
784 | if (nm == colon) | |
785 | nm++; | |
786 | else | |
787 | { | |
788 | drive = tolower (colon[-1]) - 'a'; | |
789 | nm = colon + 1; | |
790 | if (*nm != '/') | |
791 | { | |
792 | defdir = alloca (MAXPATHLEN + 1); | |
793 | relpath = getdefdir (drive + 1, defdir); | |
794 | } | |
795 | } | |
796 | } | |
797 | #endif | |
798 | ||
570d7624 JB |
799 | /* If nm is absolute, flush ...// and detect /./ and /../. |
800 | If no /./ or /../ we can return right away. */ | |
801 | if ( | |
802 | nm[0] == '/' | |
803 | #ifdef VMS | |
804 | || index (nm, ':') | |
805 | #endif /* VMS */ | |
806 | ) | |
807 | { | |
f14b1c68 JB |
808 | /* If it turns out that the filename we want to return is just a |
809 | suffix of FILENAME, we don't need to go through and edit | |
810 | things; we just need to construct a new string using data | |
811 | starting at the middle of FILENAME. If we set lose to a | |
812 | non-zero value, that means we've discovered that we can't do | |
813 | that cool trick. */ | |
814 | int lose = 0; | |
815 | ||
570d7624 | 816 | p = nm; |
570d7624 JB |
817 | while (*p) |
818 | { | |
c77d647e JB |
819 | /* Since we know the path is absolute, we can assume that each |
820 | element starts with a "/". */ | |
821 | ||
822 | /* "//" anywhere isn't necessarily hairy; we just start afresh | |
823 | with the second slash. */ | |
570d7624 JB |
824 | if (p[0] == '/' && p[1] == '/' |
825 | #ifdef APOLLO | |
826 | /* // at start of filename is meaningful on Apollo system */ | |
827 | && nm != p | |
828 | #endif /* APOLLO */ | |
829 | ) | |
830 | nm = p + 1; | |
c77d647e JB |
831 | |
832 | /* "~" is hairy as the start of any path element. */ | |
570d7624 JB |
833 | if (p[0] == '/' && p[1] == '~') |
834 | nm = p + 1, lose = 1; | |
c77d647e JB |
835 | |
836 | /* "." and ".." are hairy. */ | |
837 | if (p[0] == '/' | |
838 | && p[1] == '.' | |
839 | && (p[2] == '/' | |
840 | || p[2] == 0 | |
841 | || (p[2] == '.' && (p[3] == '/' | |
842 | || p[3] == 0)))) | |
570d7624 JB |
843 | lose = 1; |
844 | #ifdef VMS | |
845 | if (p[0] == '\\') | |
846 | lose = 1; | |
847 | if (p[0] == '/') { | |
848 | /* if dev:[dir]/, move nm to / */ | |
849 | if (!slash && p > nm && (brack || colon)) { | |
850 | nm = (brack ? brack + 1 : colon + 1); | |
851 | lbrack = rbrack = 0; | |
852 | brack = 0; | |
853 | colon = 0; | |
854 | } | |
855 | slash = p; | |
856 | } | |
857 | if (p[0] == '-') | |
858 | #ifndef VMS4_4 | |
859 | /* VMS pre V4.4,convert '-'s in filenames. */ | |
860 | if (lbrack == rbrack) | |
861 | { | |
862 | if (dots < 2) /* this is to allow negative version numbers */ | |
863 | p[0] = '_'; | |
864 | } | |
865 | else | |
866 | #endif /* VMS4_4 */ | |
867 | if (lbrack > rbrack && | |
868 | ((p[-1] == '.' || p[-1] == '[' || p[-1] == '<') && | |
869 | (p[1] == '.' || p[1] == ']' || p[1] == '>'))) | |
870 | lose = 1; | |
871 | #ifndef VMS4_4 | |
872 | else | |
873 | p[0] = '_'; | |
874 | #endif /* VMS4_4 */ | |
875 | /* count open brackets, reset close bracket pointer */ | |
876 | if (p[0] == '[' || p[0] == '<') | |
877 | lbrack++, brack = 0; | |
878 | /* count close brackets, set close bracket pointer */ | |
879 | if (p[0] == ']' || p[0] == '>') | |
880 | rbrack++, brack = p; | |
881 | /* detect ][ or >< */ | |
882 | if ((p[0] == ']' || p[0] == '>') && (p[1] == '[' || p[1] == '<')) | |
883 | lose = 1; | |
884 | if ((p[0] == ':' || p[0] == ']' || p[0] == '>') && p[1] == '~') | |
885 | nm = p + 1, lose = 1; | |
886 | if (p[0] == ':' && (colon || slash)) | |
887 | /* if dev1:[dir]dev2:, move nm to dev2: */ | |
888 | if (brack) | |
889 | { | |
890 | nm = brack + 1; | |
891 | brack = 0; | |
892 | } | |
893 | /* if /pathname/dev:, move nm to dev: */ | |
894 | else if (slash) | |
895 | nm = slash + 1; | |
896 | /* if node::dev:, move colon following dev */ | |
897 | else if (colon && colon[-1] == ':') | |
898 | colon = p; | |
899 | /* if dev1:dev2:, move nm to dev2: */ | |
900 | else if (colon && colon[-1] != ':') | |
901 | { | |
902 | nm = colon + 1; | |
903 | colon = 0; | |
904 | } | |
905 | if (p[0] == ':' && !colon) | |
906 | { | |
907 | if (p[1] == ':') | |
908 | p++; | |
909 | colon = p; | |
910 | } | |
911 | if (lbrack == rbrack) | |
912 | if (p[0] == ';') | |
913 | dots = 2; | |
914 | else if (p[0] == '.') | |
915 | dots++; | |
916 | #endif /* VMS */ | |
917 | p++; | |
918 | } | |
919 | if (!lose) | |
920 | { | |
921 | #ifdef VMS | |
922 | if (index (nm, '/')) | |
923 | return build_string (sys_translate_unix (nm)); | |
924 | #endif /* VMS */ | |
4c3c22f3 | 925 | #ifndef MSDOS |
570d7624 JB |
926 | if (nm == XSTRING (name)->data) |
927 | return name; | |
928 | return build_string (nm); | |
4c3c22f3 | 929 | #endif |
570d7624 JB |
930 | } |
931 | } | |
932 | ||
933 | /* Now determine directory to start with and put it in newdir */ | |
934 | ||
935 | newdir = 0; | |
936 | ||
937 | if (nm[0] == '~') /* prefix ~ */ | |
c77d647e JB |
938 | { |
939 | if (nm[1] == '/' | |
570d7624 | 940 | #ifdef VMS |
c77d647e JB |
941 | || nm[1] == ':' |
942 | #endif /* VMS */ | |
943 | || nm[1] == 0) /* ~ by itself */ | |
944 | { | |
945 | if (!(newdir = (unsigned char *) egetenv ("HOME"))) | |
946 | newdir = (unsigned char *) ""; | |
4c3c22f3 RS |
947 | #ifdef MSDOS |
948 | dostounix_filename (newdir); | |
949 | #endif | |
c77d647e | 950 | nm++; |
570d7624 | 951 | #ifdef VMS |
c77d647e JB |
952 | nm++; /* Don't leave the slash in nm. */ |
953 | #endif /* VMS */ | |
954 | } | |
955 | else /* ~user/filename */ | |
956 | { | |
957 | for (p = nm; *p && (*p != '/' | |
570d7624 | 958 | #ifdef VMS |
c77d647e JB |
959 | && *p != ':' |
960 | #endif /* VMS */ | |
961 | ); p++); | |
962 | o = (unsigned char *) alloca (p - nm + 1); | |
963 | bcopy ((char *) nm, o, p - nm); | |
964 | o [p - nm] = 0; | |
965 | ||
966 | pw = (struct passwd *) getpwnam (o + 1); | |
967 | if (pw) | |
968 | { | |
969 | newdir = (unsigned char *) pw -> pw_dir; | |
570d7624 | 970 | #ifdef VMS |
c77d647e | 971 | nm = p + 1; /* skip the terminator */ |
570d7624 | 972 | #else |
c77d647e JB |
973 | nm = p; |
974 | #endif /* VMS */ | |
975 | } | |
e5d77022 | 976 | |
c77d647e JB |
977 | /* If we don't find a user of that name, leave the name |
978 | unchanged; don't move nm forward to p. */ | |
979 | } | |
980 | } | |
570d7624 JB |
981 | |
982 | if (nm[0] != '/' | |
983 | #ifdef VMS | |
984 | && !index (nm, ':') | |
985 | #endif /* not VMS */ | |
4c3c22f3 RS |
986 | #ifdef MSDOS |
987 | && drive == -1 | |
988 | #endif | |
570d7624 JB |
989 | && !newdir) |
990 | { | |
570d7624 JB |
991 | newdir = XSTRING (defalt)->data; |
992 | } | |
993 | ||
4c3c22f3 RS |
994 | #ifdef MSDOS |
995 | if (newdir == 0 && relpath) | |
996 | newdir = defdir; | |
997 | #endif | |
bfb61299 JB |
998 | if (newdir != 0) |
999 | { | |
1000 | /* Get rid of any slash at the end of newdir. */ | |
1001 | int length = strlen (newdir); | |
eabf01d4 RS |
1002 | /* Adding `length > 1 &&' makes ~ expand into / when homedir |
1003 | is the root dir. People disagree about whether that is right. | |
1004 | Anyway, we can't take the risk of this change now. */ | |
4c3c22f3 RS |
1005 | #ifdef MSDOS |
1006 | if (newdir[1] != ':' && length > 1) | |
1007 | #endif | |
eabf01d4 | 1008 | if (newdir[length - 1] == '/') |
bfb61299 JB |
1009 | { |
1010 | unsigned char *temp = (unsigned char *) alloca (length); | |
1011 | bcopy (newdir, temp, length - 1); | |
1012 | temp[length - 1] = 0; | |
1013 | newdir = temp; | |
1014 | } | |
1015 | tlen = length + 1; | |
1016 | } | |
1017 | else | |
1018 | tlen = 0; | |
570d7624 | 1019 | |
bfb61299 JB |
1020 | /* Now concatenate the directory and name to new space in the stack frame */ |
1021 | tlen += strlen (nm) + 1; | |
4c3c22f3 RS |
1022 | #ifdef MSDOS |
1023 | /* Add reserved space for drive name. */ | |
1024 | target = (unsigned char *) alloca (tlen + 2) + 2; | |
1025 | #else | |
570d7624 | 1026 | target = (unsigned char *) alloca (tlen); |
4c3c22f3 | 1027 | #endif |
570d7624 JB |
1028 | *target = 0; |
1029 | ||
1030 | if (newdir) | |
1031 | { | |
1032 | #ifndef VMS | |
1033 | if (nm[0] == 0 || nm[0] == '/') | |
1034 | strcpy (target, newdir); | |
1035 | else | |
1036 | #endif | |
c77d647e | 1037 | file_name_as_directory (target, newdir); |
570d7624 JB |
1038 | } |
1039 | ||
1040 | strcat (target, nm); | |
1041 | #ifdef VMS | |
1042 | if (index (target, '/')) | |
1043 | strcpy (target, sys_translate_unix (target)); | |
1044 | #endif /* VMS */ | |
1045 | ||
c77d647e | 1046 | /* Now canonicalize by removing /. and /foo/.. if they appear. */ |
570d7624 JB |
1047 | |
1048 | p = target; | |
1049 | o = target; | |
1050 | ||
1051 | while (*p) | |
1052 | { | |
1053 | #ifdef VMS | |
1054 | if (*p != ']' && *p != '>' && *p != '-') | |
1055 | { | |
1056 | if (*p == '\\') | |
1057 | p++; | |
1058 | *o++ = *p++; | |
1059 | } | |
1060 | else if ((p[0] == ']' || p[0] == '>') && p[0] == p[1] + 2) | |
1061 | /* brackets are offset from each other by 2 */ | |
1062 | { | |
1063 | p += 2; | |
1064 | if (*p != '.' && *p != '-' && o[-1] != '.') | |
1065 | /* convert [foo][bar] to [bar] */ | |
1066 | while (o[-1] != '[' && o[-1] != '<') | |
1067 | o--; | |
1068 | else if (*p == '-' && *o != '.') | |
1069 | *--p = '.'; | |
1070 | } | |
1071 | else if (p[0] == '-' && o[-1] == '.' && | |
1072 | (p[1] == '.' || p[1] == ']' || p[1] == '>')) | |
1073 | /* flush .foo.- ; leave - if stopped by '[' or '<' */ | |
1074 | { | |
1075 | do | |
1076 | o--; | |
1077 | while (o[-1] != '.' && o[-1] != '[' && o[-1] != '<'); | |
1078 | if (p[1] == '.') /* foo.-.bar ==> bar*/ | |
1079 | p += 2; | |
1080 | else if (o[-1] == '.') /* '.foo.-]' ==> ']' */ | |
1081 | p++, o--; | |
1082 | /* else [foo.-] ==> [-] */ | |
1083 | } | |
1084 | else | |
1085 | { | |
1086 | #ifndef VMS4_4 | |
1087 | if (*p == '-' && | |
1088 | o[-1] != '[' && o[-1] != '<' && o[-1] != '.' && | |
1089 | p[1] != ']' && p[1] != '>' && p[1] != '.') | |
1090 | *p = '_'; | |
1091 | #endif /* VMS4_4 */ | |
1092 | *o++ = *p++; | |
1093 | } | |
1094 | #else /* not VMS */ | |
1095 | if (*p != '/') | |
1096 | { | |
1097 | *o++ = *p++; | |
1098 | } | |
1099 | else if (!strncmp (p, "//", 2) | |
1100 | #ifdef APOLLO | |
1101 | /* // at start of filename is meaningful in Apollo system */ | |
1102 | && o != target | |
1103 | #endif /* APOLLO */ | |
1104 | ) | |
1105 | { | |
1106 | o = target; | |
1107 | p++; | |
1108 | } | |
c77d647e JB |
1109 | else if (p[0] == '/' |
1110 | && p[1] == '.' | |
1111 | && (p[2] == '/' | |
1112 | || p[2] == 0)) | |
1113 | { | |
1114 | /* If "/." is the entire filename, keep the "/". Otherwise, | |
1115 | just delete the whole "/.". */ | |
1116 | if (o == target && p[2] == '\0') | |
1117 | *o++ = *p; | |
1118 | p += 2; | |
1119 | } | |
570d7624 JB |
1120 | else if (!strncmp (p, "/..", 3) |
1121 | /* `/../' is the "superroot" on certain file systems. */ | |
1122 | && o != target | |
1123 | && (p[3] == '/' || p[3] == 0)) | |
1124 | { | |
1125 | while (o != target && *--o != '/') | |
1126 | ; | |
1127 | #ifdef APOLLO | |
1128 | if (o == target + 1 && o[-1] == '/' && o[0] == '/') | |
1129 | ++o; | |
1130 | else | |
1131 | #endif /* APOLLO */ | |
1132 | if (o == target && *o == '/') | |
1133 | ++o; | |
1134 | p += 3; | |
1135 | } | |
1136 | else | |
1137 | { | |
1138 | *o++ = *p++; | |
1139 | } | |
1140 | #endif /* not VMS */ | |
1141 | } | |
1142 | ||
4c3c22f3 RS |
1143 | #ifdef MSDOS |
1144 | /* at last, set drive name. */ | |
1145 | if (target[1] != ':') | |
1146 | { | |
1147 | target -= 2; | |
1148 | target[0] = (drive < 0 ? getdisk () : drive) + 'a'; | |
1149 | target[1] = ':'; | |
1150 | } | |
1151 | #endif | |
1152 | ||
570d7624 JB |
1153 | return make_string (target, o - target); |
1154 | } | |
1155 | #if 0 | |
e5d77022 JB |
1156 | /* Changed this DEFUN to a DEAFUN, so as not to confuse `make-docfile'. |
1157 | DEAFUN ("expand-file-name", Fexpand_file_name, Sexpand_file_name, 1, 2, 0, | |
570d7624 JB |
1158 | "Convert FILENAME to absolute, and canonicalize it.\n\ |
1159 | Second arg DEFAULT is directory to start with if FILENAME is relative\n\ | |
1160 | (does not start with slash); if DEFAULT is nil or missing,\n\ | |
1161 | the current buffer's value of default-directory is used.\n\ | |
1162 | Filenames containing `.' or `..' as components are simplified;\n\ | |
1163 | initial `~/' expands to your home directory.\n\ | |
1164 | See also the function `substitute-in-file-name'.") | |
1165 | (name, defalt) | |
1166 | Lisp_Object name, defalt; | |
1167 | { | |
1168 | unsigned char *nm; | |
1169 | ||
1170 | register unsigned char *newdir, *p, *o; | |
1171 | int tlen; | |
1172 | unsigned char *target; | |
1173 | struct passwd *pw; | |
1174 | int lose; | |
1175 | #ifdef VMS | |
1176 | unsigned char * colon = 0; | |
1177 | unsigned char * close = 0; | |
1178 | unsigned char * slash = 0; | |
1179 | unsigned char * brack = 0; | |
1180 | int lbrack = 0, rbrack = 0; | |
1181 | int dots = 0; | |
1182 | #endif /* VMS */ | |
1183 | ||
1184 | CHECK_STRING (name, 0); | |
1185 | ||
1186 | #ifdef VMS | |
1187 | /* Filenames on VMS are always upper case. */ | |
1188 | name = Fupcase (name); | |
1189 | #endif | |
1190 | ||
1191 | nm = XSTRING (name)->data; | |
1192 | ||
1193 | /* If nm is absolute, flush ...// and detect /./ and /../. | |
1194 | If no /./ or /../ we can return right away. */ | |
1195 | if ( | |
1196 | nm[0] == '/' | |
1197 | #ifdef VMS | |
1198 | || index (nm, ':') | |
1199 | #endif /* VMS */ | |
1200 | ) | |
1201 | { | |
1202 | p = nm; | |
1203 | lose = 0; | |
1204 | while (*p) | |
1205 | { | |
1206 | if (p[0] == '/' && p[1] == '/' | |
1207 | #ifdef APOLLO | |
1208 | /* // at start of filename is meaningful on Apollo system */ | |
1209 | && nm != p | |
1210 | #endif /* APOLLO */ | |
1211 | ) | |
1212 | nm = p + 1; | |
1213 | if (p[0] == '/' && p[1] == '~') | |
1214 | nm = p + 1, lose = 1; | |
1215 | if (p[0] == '/' && p[1] == '.' | |
1216 | && (p[2] == '/' || p[2] == 0 | |
1217 | || (p[2] == '.' && (p[3] == '/' || p[3] == 0)))) | |
1218 | lose = 1; | |
1219 | #ifdef VMS | |
1220 | if (p[0] == '\\') | |
1221 | lose = 1; | |
1222 | if (p[0] == '/') { | |
1223 | /* if dev:[dir]/, move nm to / */ | |
1224 | if (!slash && p > nm && (brack || colon)) { | |
1225 | nm = (brack ? brack + 1 : colon + 1); | |
1226 | lbrack = rbrack = 0; | |
1227 | brack = 0; | |
1228 | colon = 0; | |
1229 | } | |
1230 | slash = p; | |
1231 | } | |
1232 | if (p[0] == '-') | |
1233 | #ifndef VMS4_4 | |
1234 | /* VMS pre V4.4,convert '-'s in filenames. */ | |
1235 | if (lbrack == rbrack) | |
1236 | { | |
1237 | if (dots < 2) /* this is to allow negative version numbers */ | |
1238 | p[0] = '_'; | |
1239 | } | |
1240 | else | |
1241 | #endif /* VMS4_4 */ | |
1242 | if (lbrack > rbrack && | |
1243 | ((p[-1] == '.' || p[-1] == '[' || p[-1] == '<') && | |
1244 | (p[1] == '.' || p[1] == ']' || p[1] == '>'))) | |
1245 | lose = 1; | |
1246 | #ifndef VMS4_4 | |
1247 | else | |
1248 | p[0] = '_'; | |
1249 | #endif /* VMS4_4 */ | |
1250 | /* count open brackets, reset close bracket pointer */ | |
1251 | if (p[0] == '[' || p[0] == '<') | |
1252 | lbrack++, brack = 0; | |
1253 | /* count close brackets, set close bracket pointer */ | |
1254 | if (p[0] == ']' || p[0] == '>') | |
1255 | rbrack++, brack = p; | |
1256 | /* detect ][ or >< */ | |
1257 | if ((p[0] == ']' || p[0] == '>') && (p[1] == '[' || p[1] == '<')) | |
1258 | lose = 1; | |
1259 | if ((p[0] == ':' || p[0] == ']' || p[0] == '>') && p[1] == '~') | |
1260 | nm = p + 1, lose = 1; | |
1261 | if (p[0] == ':' && (colon || slash)) | |
1262 | /* if dev1:[dir]dev2:, move nm to dev2: */ | |
1263 | if (brack) | |
1264 | { | |
1265 | nm = brack + 1; | |
1266 | brack = 0; | |
1267 | } | |
1268 | /* if /pathname/dev:, move nm to dev: */ | |
1269 | else if (slash) | |
1270 | nm = slash + 1; | |
1271 | /* if node::dev:, move colon following dev */ | |
1272 | else if (colon && colon[-1] == ':') | |
1273 | colon = p; | |
1274 | /* if dev1:dev2:, move nm to dev2: */ | |
1275 | else if (colon && colon[-1] != ':') | |
1276 | { | |
1277 | nm = colon + 1; | |
1278 | colon = 0; | |
1279 | } | |
1280 | if (p[0] == ':' && !colon) | |
1281 | { | |
1282 | if (p[1] == ':') | |
1283 | p++; | |
1284 | colon = p; | |
1285 | } | |
1286 | if (lbrack == rbrack) | |
1287 | if (p[0] == ';') | |
1288 | dots = 2; | |
1289 | else if (p[0] == '.') | |
1290 | dots++; | |
1291 | #endif /* VMS */ | |
1292 | p++; | |
1293 | } | |
1294 | if (!lose) | |
1295 | { | |
1296 | #ifdef VMS | |
1297 | if (index (nm, '/')) | |
1298 | return build_string (sys_translate_unix (nm)); | |
1299 | #endif /* VMS */ | |
1300 | if (nm == XSTRING (name)->data) | |
1301 | return name; | |
1302 | return build_string (nm); | |
1303 | } | |
1304 | } | |
1305 | ||
1306 | /* Now determine directory to start with and put it in NEWDIR */ | |
1307 | ||
1308 | newdir = 0; | |
1309 | ||
1310 | if (nm[0] == '~') /* prefix ~ */ | |
1311 | if (nm[1] == '/' | |
1312 | #ifdef VMS | |
1313 | || nm[1] == ':' | |
1314 | #endif /* VMS */ | |
1315 | || nm[1] == 0)/* ~/filename */ | |
1316 | { | |
1317 | if (!(newdir = (unsigned char *) egetenv ("HOME"))) | |
1318 | newdir = (unsigned char *) ""; | |
1319 | nm++; | |
1320 | #ifdef VMS | |
1321 | nm++; /* Don't leave the slash in nm. */ | |
1322 | #endif /* VMS */ | |
1323 | } | |
1324 | else /* ~user/filename */ | |
1325 | { | |
1326 | /* Get past ~ to user */ | |
1327 | unsigned char *user = nm + 1; | |
1328 | /* Find end of name. */ | |
1329 | unsigned char *ptr = (unsigned char *) index (user, '/'); | |
1330 | int len = ptr ? ptr - user : strlen (user); | |
1331 | #ifdef VMS | |
1332 | unsigned char *ptr1 = index (user, ':'); | |
1333 | if (ptr1 != 0 && ptr1 - user < len) | |
1334 | len = ptr1 - user; | |
1335 | #endif /* VMS */ | |
1336 | /* Copy the user name into temp storage. */ | |
1337 | o = (unsigned char *) alloca (len + 1); | |
1338 | bcopy ((char *) user, o, len); | |
1339 | o[len] = 0; | |
1340 | ||
1341 | /* Look up the user name. */ | |
1342 | pw = (struct passwd *) getpwnam (o + 1); | |
1343 | if (!pw) | |
1344 | error ("\"%s\" isn't a registered user", o + 1); | |
1345 | ||
1346 | newdir = (unsigned char *) pw->pw_dir; | |
1347 | ||
1348 | /* Discard the user name from NM. */ | |
1349 | nm += len; | |
1350 | } | |
1351 | ||
1352 | if (nm[0] != '/' | |
1353 | #ifdef VMS | |
1354 | && !index (nm, ':') | |
1355 | #endif /* not VMS */ | |
1356 | && !newdir) | |
1357 | { | |
265a9e55 | 1358 | if (NILP (defalt)) |
570d7624 JB |
1359 | defalt = current_buffer->directory; |
1360 | CHECK_STRING (defalt, 1); | |
1361 | newdir = XSTRING (defalt)->data; | |
1362 | } | |
1363 | ||
1364 | /* Now concatenate the directory and name to new space in the stack frame */ | |
1365 | ||
1366 | tlen = (newdir ? strlen (newdir) + 1 : 0) + strlen (nm) + 1; | |
1367 | target = (unsigned char *) alloca (tlen); | |
1368 | *target = 0; | |
1369 | ||
1370 | if (newdir) | |
1371 | { | |
1372 | #ifndef VMS | |
1373 | if (nm[0] == 0 || nm[0] == '/') | |
1374 | strcpy (target, newdir); | |
1375 | else | |
1376 | #endif | |
1377 | file_name_as_directory (target, newdir); | |
1378 | } | |
1379 | ||
1380 | strcat (target, nm); | |
1381 | #ifdef VMS | |
1382 | if (index (target, '/')) | |
1383 | strcpy (target, sys_translate_unix (target)); | |
1384 | #endif /* VMS */ | |
1385 | ||
1386 | /* Now canonicalize by removing /. and /foo/.. if they appear */ | |
1387 | ||
1388 | p = target; | |
1389 | o = target; | |
1390 | ||
1391 | while (*p) | |
1392 | { | |
1393 | #ifdef VMS | |
1394 | if (*p != ']' && *p != '>' && *p != '-') | |
1395 | { | |
1396 | if (*p == '\\') | |
1397 | p++; | |
1398 | *o++ = *p++; | |
1399 | } | |
1400 | else if ((p[0] == ']' || p[0] == '>') && p[0] == p[1] + 2) | |
1401 | /* brackets are offset from each other by 2 */ | |
1402 | { | |
1403 | p += 2; | |
1404 | if (*p != '.' && *p != '-' && o[-1] != '.') | |
1405 | /* convert [foo][bar] to [bar] */ | |
1406 | while (o[-1] != '[' && o[-1] != '<') | |
1407 | o--; | |
1408 | else if (*p == '-' && *o != '.') | |
1409 | *--p = '.'; | |
1410 | } | |
1411 | else if (p[0] == '-' && o[-1] == '.' && | |
1412 | (p[1] == '.' || p[1] == ']' || p[1] == '>')) | |
1413 | /* flush .foo.- ; leave - if stopped by '[' or '<' */ | |
1414 | { | |
1415 | do | |
1416 | o--; | |
1417 | while (o[-1] != '.' && o[-1] != '[' && o[-1] != '<'); | |
1418 | if (p[1] == '.') /* foo.-.bar ==> bar*/ | |
1419 | p += 2; | |
1420 | else if (o[-1] == '.') /* '.foo.-]' ==> ']' */ | |
1421 | p++, o--; | |
1422 | /* else [foo.-] ==> [-] */ | |
1423 | } | |
1424 | else | |
1425 | { | |
1426 | #ifndef VMS4_4 | |
1427 | if (*p == '-' && | |
1428 | o[-1] != '[' && o[-1] != '<' && o[-1] != '.' && | |
1429 | p[1] != ']' && p[1] != '>' && p[1] != '.') | |
1430 | *p = '_'; | |
1431 | #endif /* VMS4_4 */ | |
1432 | *o++ = *p++; | |
1433 | } | |
1434 | #else /* not VMS */ | |
1435 | if (*p != '/') | |
1436 | { | |
1437 | *o++ = *p++; | |
1438 | } | |
1439 | else if (!strncmp (p, "//", 2) | |
1440 | #ifdef APOLLO | |
1441 | /* // at start of filename is meaningful in Apollo system */ | |
1442 | && o != target | |
1443 | #endif /* APOLLO */ | |
1444 | ) | |
1445 | { | |
1446 | o = target; | |
1447 | p++; | |
1448 | } | |
1449 | else if (p[0] == '/' && p[1] == '.' && | |
1450 | (p[2] == '/' || p[2] == 0)) | |
1451 | p += 2; | |
1452 | else if (!strncmp (p, "/..", 3) | |
1453 | /* `/../' is the "superroot" on certain file systems. */ | |
1454 | && o != target | |
1455 | && (p[3] == '/' || p[3] == 0)) | |
1456 | { | |
1457 | while (o != target && *--o != '/') | |
1458 | ; | |
1459 | #ifdef APOLLO | |
1460 | if (o == target + 1 && o[-1] == '/' && o[0] == '/') | |
1461 | ++o; | |
1462 | else | |
1463 | #endif /* APOLLO */ | |
1464 | if (o == target && *o == '/') | |
1465 | ++o; | |
1466 | p += 3; | |
1467 | } | |
1468 | else | |
1469 | { | |
1470 | *o++ = *p++; | |
1471 | } | |
1472 | #endif /* not VMS */ | |
1473 | } | |
1474 | ||
1475 | return make_string (target, o - target); | |
1476 | } | |
1477 | #endif | |
1478 | \f | |
1479 | DEFUN ("substitute-in-file-name", Fsubstitute_in_file_name, | |
1480 | Ssubstitute_in_file_name, 1, 1, 0, | |
1481 | "Substitute environment variables referred to in FILENAME.\n\ | |
1482 | `$FOO' where FOO is an environment variable name means to substitute\n\ | |
1483 | the value of that variable. The variable name should be terminated\n\ | |
1484 | with a character not a letter, digit or underscore; otherwise, enclose\n\ | |
1485 | the entire variable name in braces.\n\ | |
1486 | If `/~' appears, all of FILENAME through that `/' is discarded.\n\n\ | |
1487 | On VMS, `$' substitution is not done; this function does little and only\n\ | |
1488 | duplicates what `expand-file-name' does.") | |
1489 | (string) | |
1490 | Lisp_Object string; | |
1491 | { | |
1492 | unsigned char *nm; | |
1493 | ||
1494 | register unsigned char *s, *p, *o, *x, *endp; | |
1495 | unsigned char *target; | |
1496 | int total = 0; | |
1497 | int substituted = 0; | |
1498 | unsigned char *xnm; | |
1499 | ||
1500 | CHECK_STRING (string, 0); | |
1501 | ||
1502 | nm = XSTRING (string)->data; | |
a5a1cc06 RS |
1503 | #ifdef MSDOS |
1504 | dostounix_filename (nm = strcpy (alloca (strlen (nm) + 1), nm)); | |
1505 | substituted = !strcmp (nm, XSTRING (string)->data); | |
1506 | #endif | |
570d7624 JB |
1507 | endp = nm + XSTRING (string)->size; |
1508 | ||
1509 | /* If /~ or // appears, discard everything through first slash. */ | |
1510 | ||
1511 | for (p = nm; p != endp; p++) | |
1512 | { | |
1513 | if ((p[0] == '~' || | |
1514 | #ifdef APOLLO | |
1515 | /* // at start of file name is meaningful in Apollo system */ | |
1516 | (p[0] == '/' && p - 1 != nm) | |
1517 | #else /* not APOLLO */ | |
1518 | p[0] == '/' | |
1519 | #endif /* not APOLLO */ | |
1520 | ) | |
1521 | && p != nm && | |
1522 | #ifdef VMS | |
1523 | (p[-1] == ':' || p[-1] == ']' || p[-1] == '>' || | |
1524 | #endif /* VMS */ | |
1525 | p[-1] == '/') | |
1526 | #ifdef VMS | |
1527 | ) | |
1528 | #endif /* VMS */ | |
1529 | { | |
1530 | nm = p; | |
1531 | substituted = 1; | |
1532 | } | |
4c3c22f3 RS |
1533 | #ifdef MSDOS |
1534 | if (p[0] && p[1] == ':') | |
1535 | { | |
1536 | nm = p; | |
1537 | substituted = 1; | |
1538 | } | |
1539 | #endif /* MSDOS */ | |
570d7624 JB |
1540 | } |
1541 | ||
1542 | #ifdef VMS | |
1543 | return build_string (nm); | |
1544 | #else | |
1545 | ||
1546 | /* See if any variables are substituted into the string | |
1547 | and find the total length of their values in `total' */ | |
1548 | ||
1549 | for (p = nm; p != endp;) | |
1550 | if (*p != '$') | |
1551 | p++; | |
1552 | else | |
1553 | { | |
1554 | p++; | |
1555 | if (p == endp) | |
1556 | goto badsubst; | |
1557 | else if (*p == '$') | |
1558 | { | |
1559 | /* "$$" means a single "$" */ | |
1560 | p++; | |
1561 | total -= 1; | |
1562 | substituted = 1; | |
1563 | continue; | |
1564 | } | |
1565 | else if (*p == '{') | |
1566 | { | |
1567 | o = ++p; | |
1568 | while (p != endp && *p != '}') p++; | |
1569 | if (*p != '}') goto missingclose; | |
1570 | s = p; | |
1571 | } | |
1572 | else | |
1573 | { | |
1574 | o = p; | |
1575 | while (p != endp && (isalnum (*p) || *p == '_')) p++; | |
1576 | s = p; | |
1577 | } | |
1578 | ||
1579 | /* Copy out the variable name */ | |
1580 | target = (unsigned char *) alloca (s - o + 1); | |
1581 | strncpy (target, o, s - o); | |
1582 | target[s - o] = 0; | |
4c3c22f3 RS |
1583 | #ifdef MSDOS |
1584 | strupr (target); /* $home == $HOME etc. */ | |
1585 | #endif | |
570d7624 JB |
1586 | |
1587 | /* Get variable value */ | |
1588 | o = (unsigned char *) egetenv (target); | |
570d7624 JB |
1589 | if (!o) goto badvar; |
1590 | total += strlen (o); | |
1591 | substituted = 1; | |
1592 | } | |
1593 | ||
1594 | if (!substituted) | |
1595 | return string; | |
1596 | ||
1597 | /* If substitution required, recopy the string and do it */ | |
1598 | /* Make space in stack frame for the new copy */ | |
1599 | xnm = (unsigned char *) alloca (XSTRING (string)->size + total + 1); | |
1600 | x = xnm; | |
1601 | ||
1602 | /* Copy the rest of the name through, replacing $ constructs with values */ | |
1603 | for (p = nm; *p;) | |
1604 | if (*p != '$') | |
1605 | *x++ = *p++; | |
1606 | else | |
1607 | { | |
1608 | p++; | |
1609 | if (p == endp) | |
1610 | goto badsubst; | |
1611 | else if (*p == '$') | |
1612 | { | |
1613 | *x++ = *p++; | |
1614 | continue; | |
1615 | } | |
1616 | else if (*p == '{') | |
1617 | { | |
1618 | o = ++p; | |
1619 | while (p != endp && *p != '}') p++; | |
1620 | if (*p != '}') goto missingclose; | |
1621 | s = p++; | |
1622 | } | |
1623 | else | |
1624 | { | |
1625 | o = p; | |
1626 | while (p != endp && (isalnum (*p) || *p == '_')) p++; | |
1627 | s = p; | |
1628 | } | |
1629 | ||
1630 | /* Copy out the variable name */ | |
1631 | target = (unsigned char *) alloca (s - o + 1); | |
1632 | strncpy (target, o, s - o); | |
1633 | target[s - o] = 0; | |
4c3c22f3 RS |
1634 | #ifdef MSDOS |
1635 | strupr (target); /* $home == $HOME etc. */ | |
1636 | #endif | |
570d7624 JB |
1637 | |
1638 | /* Get variable value */ | |
1639 | o = (unsigned char *) egetenv (target); | |
570d7624 JB |
1640 | if (!o) |
1641 | goto badvar; | |
1642 | ||
1643 | strcpy (x, o); | |
1644 | x += strlen (o); | |
1645 | } | |
1646 | ||
1647 | *x = 0; | |
1648 | ||
1649 | /* If /~ or // appears, discard everything through first slash. */ | |
1650 | ||
1651 | for (p = xnm; p != x; p++) | |
1652 | if ((p[0] == '~' || | |
1653 | #ifdef APOLLO | |
1654 | /* // at start of file name is meaningful in Apollo system */ | |
1655 | (p[0] == '/' && p - 1 != xnm) | |
1656 | #else /* not APOLLO */ | |
1657 | p[0] == '/' | |
1658 | #endif /* not APOLLO */ | |
1659 | ) | |
1660 | && p != nm && p[-1] == '/') | |
1661 | xnm = p; | |
4c3c22f3 RS |
1662 | #ifdef MSDOS |
1663 | else if (p[0] && p[1] == ':') | |
1664 | xnm = p; | |
1665 | #endif | |
570d7624 JB |
1666 | |
1667 | return make_string (xnm, x - xnm); | |
1668 | ||
1669 | badsubst: | |
1670 | error ("Bad format environment-variable substitution"); | |
1671 | missingclose: | |
1672 | error ("Missing \"}\" in environment-variable substitution"); | |
1673 | badvar: | |
1674 | error ("Substituting nonexistent environment variable \"%s\"", target); | |
1675 | ||
1676 | /* NOTREACHED */ | |
1677 | #endif /* not VMS */ | |
1678 | } | |
1679 | \f | |
067ffa38 | 1680 | /* A slightly faster and more convenient way to get |
298b760e | 1681 | (directory-file-name (expand-file-name FOO)). */ |
067ffa38 | 1682 | |
570d7624 JB |
1683 | Lisp_Object |
1684 | expand_and_dir_to_file (filename, defdir) | |
1685 | Lisp_Object filename, defdir; | |
1686 | { | |
1687 | register Lisp_Object abspath; | |
1688 | ||
1689 | abspath = Fexpand_file_name (filename, defdir); | |
1690 | #ifdef VMS | |
1691 | { | |
1692 | register int c = XSTRING (abspath)->data[XSTRING (abspath)->size - 1]; | |
1693 | if (c == ':' || c == ']' || c == '>') | |
1694 | abspath = Fdirectory_file_name (abspath); | |
1695 | } | |
1696 | #else | |
1697 | /* Remove final slash, if any (unless path is root). | |
1698 | stat behaves differently depending! */ | |
1699 | if (XSTRING (abspath)->size > 1 | |
1700 | && XSTRING (abspath)->data[XSTRING (abspath)->size - 1] == '/') | |
ddc61f46 RS |
1701 | /* We cannot take shortcuts; they might be wrong for magic file names. */ |
1702 | abspath = Fdirectory_file_name (abspath); | |
570d7624 JB |
1703 | #endif |
1704 | return abspath; | |
1705 | } | |
1706 | \f | |
1707 | barf_or_query_if_file_exists (absname, querystring, interactive) | |
1708 | Lisp_Object absname; | |
1709 | unsigned char *querystring; | |
1710 | int interactive; | |
1711 | { | |
1712 | register Lisp_Object tem; | |
4018b5ef | 1713 | struct stat statbuf; |
570d7624 JB |
1714 | struct gcpro gcpro1; |
1715 | ||
4018b5ef RS |
1716 | /* stat is a good way to tell whether the file exists, |
1717 | regardless of what access permissions it has. */ | |
1718 | if (stat (XSTRING (absname)->data, &statbuf) >= 0) | |
570d7624 JB |
1719 | { |
1720 | if (! interactive) | |
1721 | Fsignal (Qfile_already_exists, | |
1722 | Fcons (build_string ("File already exists"), | |
1723 | Fcons (absname, Qnil))); | |
1724 | GCPRO1 (absname); | |
1725 | tem = do_yes_or_no_p (format1 ("File %s already exists; %s anyway? ", | |
1726 | XSTRING (absname)->data, querystring)); | |
1727 | UNGCPRO; | |
265a9e55 | 1728 | if (NILP (tem)) |
570d7624 JB |
1729 | Fsignal (Qfile_already_exists, |
1730 | Fcons (build_string ("File already exists"), | |
1731 | Fcons (absname, Qnil))); | |
1732 | } | |
1733 | return; | |
1734 | } | |
1735 | ||
1736 | DEFUN ("copy-file", Fcopy_file, Scopy_file, 2, 4, | |
349a7710 | 1737 | "fCopy file: \nFCopy %s to file: \np\nP", |
570d7624 JB |
1738 | "Copy FILE to NEWNAME. Both args must be strings.\n\ |
1739 | Signals a `file-already-exists' error if file NEWNAME already exists,\n\ | |
1740 | unless a third argument OK-IF-ALREADY-EXISTS is supplied and non-nil.\n\ | |
1741 | A number as third arg means request confirmation if NEWNAME already exists.\n\ | |
1742 | This is what happens in interactive use with M-x.\n\ | |
349a7710 JB |
1743 | Fourth arg KEEP-TIME non-nil means give the new file the same\n\ |
1744 | last-modified time as the old one. (This works on only some systems.)\n\ | |
1745 | A prefix arg makes KEEP-TIME non-nil.") | |
570d7624 JB |
1746 | (filename, newname, ok_if_already_exists, keep_date) |
1747 | Lisp_Object filename, newname, ok_if_already_exists, keep_date; | |
1748 | { | |
1749 | int ifd, ofd, n; | |
1750 | char buf[16 * 1024]; | |
1751 | struct stat st; | |
32f4334d | 1752 | Lisp_Object handler; |
570d7624 | 1753 | struct gcpro gcpro1, gcpro2; |
b5148e85 | 1754 | int count = specpdl_ptr - specpdl; |
f73b0ada | 1755 | int input_file_statable_p; |
570d7624 JB |
1756 | |
1757 | GCPRO2 (filename, newname); | |
1758 | CHECK_STRING (filename, 0); | |
1759 | CHECK_STRING (newname, 1); | |
1760 | filename = Fexpand_file_name (filename, Qnil); | |
1761 | newname = Fexpand_file_name (newname, Qnil); | |
32f4334d | 1762 | |
0bf2eed2 | 1763 | /* If the input file name has special constructs in it, |
32f4334d | 1764 | call the corresponding file handler. */ |
49307295 | 1765 | handler = Ffind_file_name_handler (filename, Qcopy_file); |
0bf2eed2 | 1766 | /* Likewise for output file name. */ |
51cf6d37 | 1767 | if (NILP (handler)) |
49307295 | 1768 | handler = Ffind_file_name_handler (newname, Qcopy_file); |
32f4334d | 1769 | if (!NILP (handler)) |
36712b0a KH |
1770 | RETURN_UNGCPRO (call5 (handler, Qcopy_file, filename, newname, |
1771 | ok_if_already_exists, keep_date)); | |
32f4334d | 1772 | |
265a9e55 | 1773 | if (NILP (ok_if_already_exists) |
570d7624 JB |
1774 | || XTYPE (ok_if_already_exists) == Lisp_Int) |
1775 | barf_or_query_if_file_exists (newname, "copy to it", | |
1776 | XTYPE (ok_if_already_exists) == Lisp_Int); | |
1777 | ||
4018b5ef | 1778 | ifd = open (XSTRING (filename)->data, O_RDONLY); |
570d7624 JB |
1779 | if (ifd < 0) |
1780 | report_file_error ("Opening input file", Fcons (filename, Qnil)); | |
1781 | ||
b5148e85 RS |
1782 | record_unwind_protect (close_file_unwind, make_number (ifd)); |
1783 | ||
f73b0ada BF |
1784 | /* We can only copy regular files and symbolic links. Other files are not |
1785 | copyable by us. */ | |
1786 | input_file_statable_p = (fstat (ifd, &st) >= 0); | |
1787 | ||
1788 | #if defined (S_ISREG) && defined (S_ISLNK) | |
1789 | if (input_file_statable_p) | |
1790 | { | |
1791 | if (!(S_ISREG (st.st_mode)) && !(S_ISLNK (st.st_mode))) | |
1792 | { | |
1793 | #if defined (EISDIR) | |
1794 | /* Get a better looking error message. */ | |
1795 | errno = EISDIR; | |
1796 | #endif /* EISDIR */ | |
1797 | report_file_error ("Non-regular file", Fcons (filename, Qnil)); | |
1798 | } | |
1799 | } | |
1800 | #endif /* S_ISREG && S_ISLNK */ | |
1801 | ||
570d7624 JB |
1802 | #ifdef VMS |
1803 | /* Create the copy file with the same record format as the input file */ | |
1804 | ofd = sys_creat (XSTRING (newname)->data, 0666, ifd); | |
1805 | #else | |
4c3c22f3 RS |
1806 | #ifdef MSDOS |
1807 | /* System's default file type was set to binary by _fmode in emacs.c. */ | |
1808 | ofd = creat (XSTRING (newname)->data, S_IREAD | S_IWRITE); | |
1809 | #else /* not MSDOS */ | |
570d7624 | 1810 | ofd = creat (XSTRING (newname)->data, 0666); |
4c3c22f3 | 1811 | #endif /* not MSDOS */ |
570d7624 JB |
1812 | #endif /* VMS */ |
1813 | if (ofd < 0) | |
66331187 | 1814 | report_file_error ("Opening output file", Fcons (newname, Qnil)); |
b5148e85 RS |
1815 | |
1816 | record_unwind_protect (close_file_unwind, make_number (ofd)); | |
570d7624 | 1817 | |
b5148e85 RS |
1818 | immediate_quit = 1; |
1819 | QUIT; | |
570d7624 JB |
1820 | while ((n = read (ifd, buf, sizeof buf)) > 0) |
1821 | if (write (ofd, buf, n) != n) | |
66331187 | 1822 | report_file_error ("I/O error", Fcons (newname, Qnil)); |
b5148e85 | 1823 | immediate_quit = 0; |
570d7624 | 1824 | |
5acac34e RS |
1825 | /* Closing the output clobbers the file times on some systems. */ |
1826 | if (close (ofd) < 0) | |
1827 | report_file_error ("I/O error", Fcons (newname, Qnil)); | |
1828 | ||
f73b0ada | 1829 | if (input_file_statable_p) |
570d7624 | 1830 | { |
265a9e55 | 1831 | if (!NILP (keep_date)) |
570d7624 | 1832 | { |
de5bf5d3 JB |
1833 | EMACS_TIME atime, mtime; |
1834 | EMACS_SET_SECS_USECS (atime, st.st_atime, 0); | |
1835 | EMACS_SET_SECS_USECS (mtime, st.st_mtime, 0); | |
1836 | EMACS_SET_UTIMES (XSTRING (newname)->data, atime, mtime); | |
570d7624 | 1837 | } |
570d7624 JB |
1838 | #ifdef APOLLO |
1839 | if (!egetenv ("USE_DOMAIN_ACLS")) | |
1840 | #endif | |
de5bf5d3 | 1841 | chmod (XSTRING (newname)->data, st.st_mode & 07777); |
570d7624 JB |
1842 | } |
1843 | ||
5acac34e RS |
1844 | close (ifd); |
1845 | ||
b5148e85 RS |
1846 | /* Discard the unwind protects. */ |
1847 | specpdl_ptr = specpdl + count; | |
1848 | ||
570d7624 JB |
1849 | UNGCPRO; |
1850 | return Qnil; | |
1851 | } | |
1852 | ||
9bbe01fb | 1853 | DEFUN ("make-directory-internal", Fmake_directory_internal, |
353cfc19 | 1854 | Smake_directory_internal, 1, 1, 0, |
570d7624 JB |
1855 | "Create a directory. One argument, a file name string.") |
1856 | (dirname) | |
1857 | Lisp_Object dirname; | |
1858 | { | |
1859 | unsigned char *dir; | |
32f4334d | 1860 | Lisp_Object handler; |
570d7624 JB |
1861 | |
1862 | CHECK_STRING (dirname, 0); | |
1863 | dirname = Fexpand_file_name (dirname, Qnil); | |
32f4334d | 1864 | |
a6e6e718 | 1865 | handler = Ffind_file_name_handler (dirname, Qmake_directory_internal); |
32f4334d | 1866 | if (!NILP (handler)) |
e508ad53 | 1867 | return call2 (handler, Qmake_directory_internal, dirname); |
9bbe01fb | 1868 | |
570d7624 JB |
1869 | dir = XSTRING (dirname)->data; |
1870 | ||
1871 | if (mkdir (dir, 0777) != 0) | |
1872 | report_file_error ("Creating directory", Flist (1, &dirname)); | |
1873 | ||
32f4334d | 1874 | return Qnil; |
570d7624 JB |
1875 | } |
1876 | ||
aa734e17 | 1877 | DEFUN ("delete-directory", Fdelete_directory, Sdelete_directory, 1, 1, "FDelete directory: ", |
1691b32b | 1878 | "Delete a directory. One argument, a file name or directory name string.") |
570d7624 JB |
1879 | (dirname) |
1880 | Lisp_Object dirname; | |
1881 | { | |
1882 | unsigned char *dir; | |
32f4334d | 1883 | Lisp_Object handler; |
570d7624 JB |
1884 | |
1885 | CHECK_STRING (dirname, 0); | |
1691b32b | 1886 | dirname = Fdirectory_file_name (Fexpand_file_name (dirname, Qnil)); |
570d7624 JB |
1887 | dir = XSTRING (dirname)->data; |
1888 | ||
49307295 | 1889 | handler = Ffind_file_name_handler (dirname, Qdelete_directory); |
32f4334d RS |
1890 | if (!NILP (handler)) |
1891 | return call2 (handler, Qdelete_directory, dirname); | |
1892 | ||
570d7624 JB |
1893 | if (rmdir (dir) != 0) |
1894 | report_file_error ("Removing directory", Flist (1, &dirname)); | |
1895 | ||
1896 | return Qnil; | |
1897 | } | |
1898 | ||
1899 | DEFUN ("delete-file", Fdelete_file, Sdelete_file, 1, 1, "fDelete file: ", | |
1900 | "Delete specified file. One argument, a file name string.\n\ | |
1901 | If file has multiple names, it continues to exist with the other names.") | |
1902 | (filename) | |
1903 | Lisp_Object filename; | |
1904 | { | |
32f4334d | 1905 | Lisp_Object handler; |
570d7624 JB |
1906 | CHECK_STRING (filename, 0); |
1907 | filename = Fexpand_file_name (filename, Qnil); | |
32f4334d | 1908 | |
49307295 | 1909 | handler = Ffind_file_name_handler (filename, Qdelete_file); |
32f4334d RS |
1910 | if (!NILP (handler)) |
1911 | return call2 (handler, Qdelete_file, filename); | |
1912 | ||
570d7624 JB |
1913 | if (0 > unlink (XSTRING (filename)->data)) |
1914 | report_file_error ("Removing old name", Flist (1, &filename)); | |
1915 | return Qnil; | |
1916 | } | |
1917 | ||
1918 | DEFUN ("rename-file", Frename_file, Srename_file, 2, 3, | |
1919 | "fRename file: \nFRename %s to file: \np", | |
1920 | "Rename FILE as NEWNAME. Both args strings.\n\ | |
1921 | If file has names other than FILE, it continues to have those names.\n\ | |
1922 | Signals a `file-already-exists' error if a file NEWNAME already exists\n\ | |
1923 | unless optional third argument OK-IF-ALREADY-EXISTS is non-nil.\n\ | |
1924 | A number as third arg means request confirmation if NEWNAME already exists.\n\ | |
1925 | This is what happens in interactive use with M-x.") | |
1926 | (filename, newname, ok_if_already_exists) | |
1927 | Lisp_Object filename, newname, ok_if_already_exists; | |
1928 | { | |
1929 | #ifdef NO_ARG_ARRAY | |
1930 | Lisp_Object args[2]; | |
1931 | #endif | |
32f4334d | 1932 | Lisp_Object handler; |
570d7624 JB |
1933 | struct gcpro gcpro1, gcpro2; |
1934 | ||
1935 | GCPRO2 (filename, newname); | |
1936 | CHECK_STRING (filename, 0); | |
1937 | CHECK_STRING (newname, 1); | |
1938 | filename = Fexpand_file_name (filename, Qnil); | |
1939 | newname = Fexpand_file_name (newname, Qnil); | |
32f4334d RS |
1940 | |
1941 | /* If the file name has special constructs in it, | |
1942 | call the corresponding file handler. */ | |
49307295 | 1943 | handler = Ffind_file_name_handler (filename, Qrename_file); |
51cf6d37 | 1944 | if (NILP (handler)) |
49307295 | 1945 | handler = Ffind_file_name_handler (newname, Qrename_file); |
32f4334d | 1946 | if (!NILP (handler)) |
36712b0a KH |
1947 | RETURN_UNGCPRO (call4 (handler, Qrename_file, |
1948 | filename, newname, ok_if_already_exists)); | |
32f4334d | 1949 | |
265a9e55 | 1950 | if (NILP (ok_if_already_exists) |
570d7624 JB |
1951 | || XTYPE (ok_if_already_exists) == Lisp_Int) |
1952 | barf_or_query_if_file_exists (newname, "rename to it", | |
1953 | XTYPE (ok_if_already_exists) == Lisp_Int); | |
1954 | #ifndef BSD4_1 | |
1955 | if (0 > rename (XSTRING (filename)->data, XSTRING (newname)->data)) | |
1956 | #else | |
1957 | if (0 > link (XSTRING (filename)->data, XSTRING (newname)->data) | |
1958 | || 0 > unlink (XSTRING (filename)->data)) | |
1959 | #endif | |
1960 | { | |
1961 | if (errno == EXDEV) | |
1962 | { | |
d093c3ac RM |
1963 | Fcopy_file (filename, newname, |
1964 | /* We have already prompted if it was an integer, | |
1965 | so don't have copy-file prompt again. */ | |
1966 | NILP (ok_if_already_exists) ? Qnil : Qt, Qt); | |
570d7624 JB |
1967 | Fdelete_file (filename); |
1968 | } | |
1969 | else | |
1970 | #ifdef NO_ARG_ARRAY | |
1971 | { | |
1972 | args[0] = filename; | |
1973 | args[1] = newname; | |
1974 | report_file_error ("Renaming", Flist (2, args)); | |
1975 | } | |
1976 | #else | |
1977 | report_file_error ("Renaming", Flist (2, &filename)); | |
1978 | #endif | |
1979 | } | |
1980 | UNGCPRO; | |
1981 | return Qnil; | |
1982 | } | |
1983 | ||
1984 | DEFUN ("add-name-to-file", Fadd_name_to_file, Sadd_name_to_file, 2, 3, | |
1985 | "fAdd name to file: \nFName to add to %s: \np", | |
1986 | "Give FILE additional name NEWNAME. Both args strings.\n\ | |
1987 | Signals a `file-already-exists' error if a file NEWNAME already exists\n\ | |
1988 | unless optional third argument OK-IF-ALREADY-EXISTS is non-nil.\n\ | |
1989 | A number as third arg means request confirmation if NEWNAME already exists.\n\ | |
1990 | This is what happens in interactive use with M-x.") | |
1991 | (filename, newname, ok_if_already_exists) | |
1992 | Lisp_Object filename, newname, ok_if_already_exists; | |
1993 | { | |
1994 | #ifdef NO_ARG_ARRAY | |
1995 | Lisp_Object args[2]; | |
1996 | #endif | |
32f4334d | 1997 | Lisp_Object handler; |
570d7624 JB |
1998 | struct gcpro gcpro1, gcpro2; |
1999 | ||
2000 | GCPRO2 (filename, newname); | |
2001 | CHECK_STRING (filename, 0); | |
2002 | CHECK_STRING (newname, 1); | |
2003 | filename = Fexpand_file_name (filename, Qnil); | |
2004 | newname = Fexpand_file_name (newname, Qnil); | |
32f4334d RS |
2005 | |
2006 | /* If the file name has special constructs in it, | |
2007 | call the corresponding file handler. */ | |
49307295 | 2008 | handler = Ffind_file_name_handler (filename, Qadd_name_to_file); |
32f4334d | 2009 | if (!NILP (handler)) |
36712b0a KH |
2010 | RETURN_UNGCPRO (call4 (handler, Qadd_name_to_file, filename, |
2011 | newname, ok_if_already_exists)); | |
32f4334d | 2012 | |
265a9e55 | 2013 | if (NILP (ok_if_already_exists) |
570d7624 JB |
2014 | || XTYPE (ok_if_already_exists) == Lisp_Int) |
2015 | barf_or_query_if_file_exists (newname, "make it a new name", | |
2016 | XTYPE (ok_if_already_exists) == Lisp_Int); | |
2017 | unlink (XSTRING (newname)->data); | |
2018 | if (0 > link (XSTRING (filename)->data, XSTRING (newname)->data)) | |
2019 | { | |
2020 | #ifdef NO_ARG_ARRAY | |
2021 | args[0] = filename; | |
2022 | args[1] = newname; | |
2023 | report_file_error ("Adding new name", Flist (2, args)); | |
2024 | #else | |
2025 | report_file_error ("Adding new name", Flist (2, &filename)); | |
2026 | #endif | |
2027 | } | |
2028 | ||
2029 | UNGCPRO; | |
2030 | return Qnil; | |
2031 | } | |
2032 | ||
2033 | #ifdef S_IFLNK | |
2034 | DEFUN ("make-symbolic-link", Fmake_symbolic_link, Smake_symbolic_link, 2, 3, | |
2035 | "FMake symbolic link to file: \nFMake symbolic link to file %s: \np", | |
2036 | "Make a symbolic link to FILENAME, named LINKNAME. Both args strings.\n\ | |
2037 | Signals a `file-already-exists' error if a file NEWNAME already exists\n\ | |
2038 | unless optional third argument OK-IF-ALREADY-EXISTS is non-nil.\n\ | |
2039 | A number as third arg means request confirmation if NEWNAME already exists.\n\ | |
2040 | This happens for interactive use with M-x.") | |
e5d77022 JB |
2041 | (filename, linkname, ok_if_already_exists) |
2042 | Lisp_Object filename, linkname, ok_if_already_exists; | |
570d7624 JB |
2043 | { |
2044 | #ifdef NO_ARG_ARRAY | |
2045 | Lisp_Object args[2]; | |
2046 | #endif | |
32f4334d | 2047 | Lisp_Object handler; |
570d7624 JB |
2048 | struct gcpro gcpro1, gcpro2; |
2049 | ||
e5d77022 | 2050 | GCPRO2 (filename, linkname); |
570d7624 | 2051 | CHECK_STRING (filename, 0); |
e5d77022 | 2052 | CHECK_STRING (linkname, 1); |
d9bc1c99 RS |
2053 | /* If the link target has a ~, we must expand it to get |
2054 | a truly valid file name. Otherwise, do not expand; | |
2055 | we want to permit links to relative file names. */ | |
2056 | if (XSTRING (filename)->data[0] == '~') | |
2057 | filename = Fexpand_file_name (filename, Qnil); | |
e5d77022 | 2058 | linkname = Fexpand_file_name (linkname, Qnil); |
32f4334d RS |
2059 | |
2060 | /* If the file name has special constructs in it, | |
2061 | call the corresponding file handler. */ | |
49307295 | 2062 | handler = Ffind_file_name_handler (filename, Qmake_symbolic_link); |
32f4334d | 2063 | if (!NILP (handler)) |
36712b0a KH |
2064 | RETURN_UNGCPRO (call4 (handler, Qmake_symbolic_link, filename, |
2065 | linkname, ok_if_already_exists)); | |
32f4334d | 2066 | |
265a9e55 | 2067 | if (NILP (ok_if_already_exists) |
570d7624 | 2068 | || XTYPE (ok_if_already_exists) == Lisp_Int) |
e5d77022 | 2069 | barf_or_query_if_file_exists (linkname, "make it a link", |
570d7624 | 2070 | XTYPE (ok_if_already_exists) == Lisp_Int); |
e5d77022 | 2071 | if (0 > symlink (XSTRING (filename)->data, XSTRING (linkname)->data)) |
570d7624 JB |
2072 | { |
2073 | /* If we didn't complain already, silently delete existing file. */ | |
2074 | if (errno == EEXIST) | |
2075 | { | |
9083124b | 2076 | unlink (XSTRING (linkname)->data); |
e5d77022 | 2077 | if (0 <= symlink (XSTRING (filename)->data, XSTRING (linkname)->data)) |
1a04498e KH |
2078 | { |
2079 | UNGCPRO; | |
2080 | return Qnil; | |
2081 | } | |
570d7624 JB |
2082 | } |
2083 | ||
2084 | #ifdef NO_ARG_ARRAY | |
2085 | args[0] = filename; | |
e5d77022 | 2086 | args[1] = linkname; |
570d7624 JB |
2087 | report_file_error ("Making symbolic link", Flist (2, args)); |
2088 | #else | |
2089 | report_file_error ("Making symbolic link", Flist (2, &filename)); | |
2090 | #endif | |
2091 | } | |
2092 | UNGCPRO; | |
2093 | return Qnil; | |
2094 | } | |
2095 | #endif /* S_IFLNK */ | |
2096 | ||
2097 | #ifdef VMS | |
2098 | ||
2099 | DEFUN ("define-logical-name", Fdefine_logical_name, Sdefine_logical_name, | |
2100 | 2, 2, "sDefine logical name: \nsDefine logical name %s as: ", | |
2101 | "Define the job-wide logical name NAME to have the value STRING.\n\ | |
2102 | If STRING is nil or a null string, the logical name NAME is deleted.") | |
2103 | (varname, string) | |
2104 | Lisp_Object varname; | |
2105 | Lisp_Object string; | |
2106 | { | |
2107 | CHECK_STRING (varname, 0); | |
265a9e55 | 2108 | if (NILP (string)) |
570d7624 JB |
2109 | delete_logical_name (XSTRING (varname)->data); |
2110 | else | |
2111 | { | |
2112 | CHECK_STRING (string, 1); | |
2113 | ||
2114 | if (XSTRING (string)->size == 0) | |
2115 | delete_logical_name (XSTRING (varname)->data); | |
2116 | else | |
2117 | define_logical_name (XSTRING (varname)->data, XSTRING (string)->data); | |
2118 | } | |
2119 | ||
2120 | return string; | |
2121 | } | |
2122 | #endif /* VMS */ | |
2123 | ||
2124 | #ifdef HPUX_NET | |
2125 | ||
2126 | DEFUN ("sysnetunam", Fsysnetunam, Ssysnetunam, 2, 2, 0, | |
2127 | "Open a network connection to PATH using LOGIN as the login string.") | |
2128 | (path, login) | |
2129 | Lisp_Object path, login; | |
2130 | { | |
2131 | int netresult; | |
2132 | ||
2133 | CHECK_STRING (path, 0); | |
2134 | CHECK_STRING (login, 0); | |
2135 | ||
2136 | netresult = netunam (XSTRING (path)->data, XSTRING (login)->data); | |
2137 | ||
2138 | if (netresult == -1) | |
2139 | return Qnil; | |
2140 | else | |
2141 | return Qt; | |
2142 | } | |
2143 | #endif /* HPUX_NET */ | |
2144 | \f | |
2145 | DEFUN ("file-name-absolute-p", Ffile_name_absolute_p, Sfile_name_absolute_p, | |
2146 | 1, 1, 0, | |
2147 | "Return t if file FILENAME specifies an absolute path name.\n\ | |
2148 | On Unix, this is a name starting with a `/' or a `~'.") | |
2149 | (filename) | |
2150 | Lisp_Object filename; | |
2151 | { | |
2152 | unsigned char *ptr; | |
2153 | ||
2154 | CHECK_STRING (filename, 0); | |
2155 | ptr = XSTRING (filename)->data; | |
2156 | if (*ptr == '/' || *ptr == '~' | |
2157 | #ifdef VMS | |
2158 | /* ??? This criterion is probably wrong for '<'. */ | |
2159 | || index (ptr, ':') || index (ptr, '<') | |
2160 | || (*ptr == '[' && (ptr[1] != '-' || (ptr[2] != '.' && ptr[2] != ']')) | |
2161 | && ptr[1] != '.') | |
2162 | #endif /* VMS */ | |
4c3c22f3 | 2163 | #ifdef MSDOS |
a5a1cc06 | 2164 | || (*ptr != 0 && ptr[1] == ':' && (ptr[2] == '/' || ptr[2] == '\\')) |
4c3c22f3 | 2165 | #endif |
570d7624 JB |
2166 | ) |
2167 | return Qt; | |
2168 | else | |
2169 | return Qnil; | |
2170 | } | |
2171 | ||
2172 | DEFUN ("file-exists-p", Ffile_exists_p, Sfile_exists_p, 1, 1, 0, | |
2173 | "Return t if file FILENAME exists. (This does not mean you can read it.)\n\ | |
2174 | See also `file-readable-p' and `file-attributes'.") | |
2175 | (filename) | |
2176 | Lisp_Object filename; | |
2177 | { | |
2178 | Lisp_Object abspath; | |
32f4334d | 2179 | Lisp_Object handler; |
4018b5ef | 2180 | struct stat statbuf; |
570d7624 JB |
2181 | |
2182 | CHECK_STRING (filename, 0); | |
2183 | abspath = Fexpand_file_name (filename, Qnil); | |
32f4334d RS |
2184 | |
2185 | /* If the file name has special constructs in it, | |
2186 | call the corresponding file handler. */ | |
49307295 | 2187 | handler = Ffind_file_name_handler (abspath, Qfile_exists_p); |
32f4334d | 2188 | if (!NILP (handler)) |
09121adc | 2189 | return call2 (handler, Qfile_exists_p, abspath); |
32f4334d | 2190 | |
4018b5ef | 2191 | return (stat (XSTRING (abspath)->data, &statbuf) >= 0) ? Qt : Qnil; |
570d7624 JB |
2192 | } |
2193 | ||
2194 | DEFUN ("file-executable-p", Ffile_executable_p, Sfile_executable_p, 1, 1, 0, | |
2195 | "Return t if FILENAME can be executed by you.\n\ | |
8b235fde | 2196 | For a directory, this means you can access files in that directory.") |
570d7624 JB |
2197 | (filename) |
2198 | Lisp_Object filename; | |
2199 | ||
2200 | { | |
2201 | Lisp_Object abspath; | |
32f4334d | 2202 | Lisp_Object handler; |
570d7624 JB |
2203 | |
2204 | CHECK_STRING (filename, 0); | |
2205 | abspath = Fexpand_file_name (filename, Qnil); | |
32f4334d RS |
2206 | |
2207 | /* If the file name has special constructs in it, | |
2208 | call the corresponding file handler. */ | |
49307295 | 2209 | handler = Ffind_file_name_handler (abspath, Qfile_executable_p); |
32f4334d | 2210 | if (!NILP (handler)) |
09121adc | 2211 | return call2 (handler, Qfile_executable_p, abspath); |
32f4334d | 2212 | |
570d7624 JB |
2213 | return (access (XSTRING (abspath)->data, 1) >= 0) ? Qt : Qnil; |
2214 | } | |
2215 | ||
2216 | DEFUN ("file-readable-p", Ffile_readable_p, Sfile_readable_p, 1, 1, 0, | |
2217 | "Return t if file FILENAME exists and you can read it.\n\ | |
2218 | See also `file-exists-p' and `file-attributes'.") | |
2219 | (filename) | |
2220 | Lisp_Object filename; | |
2221 | { | |
2222 | Lisp_Object abspath; | |
32f4334d | 2223 | Lisp_Object handler; |
4018b5ef | 2224 | int desc; |
570d7624 JB |
2225 | |
2226 | CHECK_STRING (filename, 0); | |
2227 | abspath = Fexpand_file_name (filename, Qnil); | |
32f4334d RS |
2228 | |
2229 | /* If the file name has special constructs in it, | |
2230 | call the corresponding file handler. */ | |
49307295 | 2231 | handler = Ffind_file_name_handler (abspath, Qfile_readable_p); |
32f4334d | 2232 | if (!NILP (handler)) |
09121adc | 2233 | return call2 (handler, Qfile_readable_p, abspath); |
32f4334d | 2234 | |
4018b5ef RS |
2235 | desc = open (XSTRING (abspath)->data, O_RDONLY); |
2236 | if (desc < 0) | |
2237 | return Qnil; | |
2238 | close (desc); | |
2239 | return Qt; | |
570d7624 JB |
2240 | } |
2241 | ||
2242 | DEFUN ("file-symlink-p", Ffile_symlink_p, Sfile_symlink_p, 1, 1, 0, | |
89de89c7 RS |
2243 | "Return non-nil if file FILENAME is the name of a symbolic link.\n\ |
2244 | The value is the name of the file to which it is linked.\n\ | |
2245 | Otherwise returns nil.") | |
570d7624 JB |
2246 | (filename) |
2247 | Lisp_Object filename; | |
2248 | { | |
2249 | #ifdef S_IFLNK | |
2250 | char *buf; | |
2251 | int bufsize; | |
2252 | int valsize; | |
2253 | Lisp_Object val; | |
32f4334d | 2254 | Lisp_Object handler; |
570d7624 JB |
2255 | |
2256 | CHECK_STRING (filename, 0); | |
2257 | filename = Fexpand_file_name (filename, Qnil); | |
2258 | ||
32f4334d RS |
2259 | /* If the file name has special constructs in it, |
2260 | call the corresponding file handler. */ | |
49307295 | 2261 | handler = Ffind_file_name_handler (filename, Qfile_symlink_p); |
32f4334d RS |
2262 | if (!NILP (handler)) |
2263 | return call2 (handler, Qfile_symlink_p, filename); | |
2264 | ||
570d7624 JB |
2265 | bufsize = 100; |
2266 | while (1) | |
2267 | { | |
2268 | buf = (char *) xmalloc (bufsize); | |
2269 | bzero (buf, bufsize); | |
2270 | valsize = readlink (XSTRING (filename)->data, buf, bufsize); | |
2271 | if (valsize < bufsize) break; | |
2272 | /* Buffer was not long enough */ | |
9ac0d9e0 | 2273 | xfree (buf); |
570d7624 JB |
2274 | bufsize *= 2; |
2275 | } | |
2276 | if (valsize == -1) | |
2277 | { | |
9ac0d9e0 | 2278 | xfree (buf); |
570d7624 JB |
2279 | return Qnil; |
2280 | } | |
2281 | val = make_string (buf, valsize); | |
9ac0d9e0 | 2282 | xfree (buf); |
570d7624 JB |
2283 | return val; |
2284 | #else /* not S_IFLNK */ | |
2285 | return Qnil; | |
2286 | #endif /* not S_IFLNK */ | |
2287 | } | |
2288 | ||
a253bab2 JB |
2289 | #ifdef SOLARIS_BROKEN_ACCESS |
2290 | /* In Solaris 2.1, the readonly-ness of the filesystem is not | |
2291 | considered by the access system call. This is Sun's bug, but we | |
2292 | still have to make Emacs work. */ | |
2293 | ||
2294 | #include <sys/statvfs.h> | |
2295 | ||
2296 | static int | |
2297 | ro_fsys (path) | |
2298 | char *path; | |
2299 | { | |
2300 | struct statvfs statvfsb; | |
2301 | ||
2302 | if (statvfs(path, &statvfsb)) | |
2303 | return 1; /* error from statvfs, be conservative and say not wrtable */ | |
2304 | else | |
2305 | /* Otherwise, fsys is ro if bit is set. */ | |
2306 | return statvfsb.f_flag & ST_RDONLY; | |
2307 | } | |
2308 | #else | |
2309 | /* But on every other os, access has already done the right thing. */ | |
2310 | #define ro_fsys(path) 0 | |
2311 | #endif | |
2312 | ||
570d7624 JB |
2313 | /* Having this before file-symlink-p mysteriously caused it to be forgotten |
2314 | on the RT/PC. */ | |
2315 | DEFUN ("file-writable-p", Ffile_writable_p, Sfile_writable_p, 1, 1, 0, | |
2316 | "Return t if file FILENAME can be written or created by you.") | |
2317 | (filename) | |
2318 | Lisp_Object filename; | |
2319 | { | |
2320 | Lisp_Object abspath, dir; | |
32f4334d | 2321 | Lisp_Object handler; |
570d7624 JB |
2322 | |
2323 | CHECK_STRING (filename, 0); | |
2324 | abspath = Fexpand_file_name (filename, Qnil); | |
32f4334d RS |
2325 | |
2326 | /* If the file name has special constructs in it, | |
2327 | call the corresponding file handler. */ | |
49307295 | 2328 | handler = Ffind_file_name_handler (abspath, Qfile_writable_p); |
32f4334d | 2329 | if (!NILP (handler)) |
09121adc | 2330 | return call2 (handler, Qfile_writable_p, abspath); |
32f4334d | 2331 | |
570d7624 | 2332 | if (access (XSTRING (abspath)->data, 0) >= 0) |
a253bab2 | 2333 | return ((access (XSTRING (abspath)->data, 2) >= 0 |
e7c7295c | 2334 | && ! ro_fsys ((char *) XSTRING (abspath)->data)) |
a253bab2 | 2335 | ? Qt : Qnil); |
570d7624 JB |
2336 | dir = Ffile_name_directory (abspath); |
2337 | #ifdef VMS | |
265a9e55 | 2338 | if (!NILP (dir)) |
570d7624 JB |
2339 | dir = Fdirectory_file_name (dir); |
2340 | #endif /* VMS */ | |
4c3c22f3 RS |
2341 | #ifdef MSDOS |
2342 | if (!NILP (dir)) | |
2343 | dir = Fdirectory_file_name (dir); | |
2344 | #endif /* MSDOS */ | |
a253bab2 | 2345 | return ((access (!NILP (dir) ? (char *) XSTRING (dir)->data : "", 2) >= 0 |
e7c7295c | 2346 | && ! ro_fsys ((char *) XSTRING (dir)->data)) |
570d7624 JB |
2347 | ? Qt : Qnil); |
2348 | } | |
2349 | ||
2350 | DEFUN ("file-directory-p", Ffile_directory_p, Sfile_directory_p, 1, 1, 0, | |
2351 | "Return t if file FILENAME is the name of a directory as a file.\n\ | |
2352 | A directory name spec may be given instead; then the value is t\n\ | |
2353 | if the directory so specified exists and really is a directory.") | |
2354 | (filename) | |
2355 | Lisp_Object filename; | |
2356 | { | |
2357 | register Lisp_Object abspath; | |
2358 | struct stat st; | |
32f4334d | 2359 | Lisp_Object handler; |
570d7624 JB |
2360 | |
2361 | abspath = expand_and_dir_to_file (filename, current_buffer->directory); | |
2362 | ||
32f4334d RS |
2363 | /* If the file name has special constructs in it, |
2364 | call the corresponding file handler. */ | |
49307295 | 2365 | handler = Ffind_file_name_handler (abspath, Qfile_directory_p); |
32f4334d | 2366 | if (!NILP (handler)) |
09121adc | 2367 | return call2 (handler, Qfile_directory_p, abspath); |
32f4334d | 2368 | |
570d7624 JB |
2369 | if (stat (XSTRING (abspath)->data, &st) < 0) |
2370 | return Qnil; | |
2371 | return (st.st_mode & S_IFMT) == S_IFDIR ? Qt : Qnil; | |
2372 | } | |
2373 | ||
b72dea2a JB |
2374 | DEFUN ("file-accessible-directory-p", Ffile_accessible_directory_p, Sfile_accessible_directory_p, 1, 1, 0, |
2375 | "Return t if file FILENAME is the name of a directory as a file,\n\ | |
2376 | and files in that directory can be opened by you. In order to use a\n\ | |
2377 | directory as a buffer's current directory, this predicate must return true.\n\ | |
2378 | A directory name spec may be given instead; then the value is t\n\ | |
2379 | if the directory so specified exists and really is a readable and\n\ | |
2380 | searchable directory.") | |
2381 | (filename) | |
2382 | Lisp_Object filename; | |
2383 | { | |
32f4334d | 2384 | Lisp_Object handler; |
1a04498e | 2385 | int tem; |
32f4334d RS |
2386 | |
2387 | /* If the file name has special constructs in it, | |
2388 | call the corresponding file handler. */ | |
49307295 | 2389 | handler = Ffind_file_name_handler (filename, Qfile_accessible_directory_p); |
32f4334d RS |
2390 | if (!NILP (handler)) |
2391 | return call2 (handler, Qfile_accessible_directory_p, filename); | |
2392 | ||
1a04498e KH |
2393 | /* Need to gcpro in case the first function call has a handler that |
2394 | causes filename to be relocated. */ | |
1a04498e KH |
2395 | tem = (NILP (Ffile_directory_p (filename)) |
2396 | || NILP (Ffile_executable_p (filename))); | |
1a04498e | 2397 | return tem ? Qnil : Qt; |
b72dea2a JB |
2398 | } |
2399 | ||
570d7624 JB |
2400 | DEFUN ("file-modes", Ffile_modes, Sfile_modes, 1, 1, 0, |
2401 | "Return mode bits of FILE, as an integer.") | |
2402 | (filename) | |
2403 | Lisp_Object filename; | |
2404 | { | |
2405 | Lisp_Object abspath; | |
2406 | struct stat st; | |
32f4334d | 2407 | Lisp_Object handler; |
570d7624 JB |
2408 | |
2409 | abspath = expand_and_dir_to_file (filename, current_buffer->directory); | |
2410 | ||
32f4334d RS |
2411 | /* If the file name has special constructs in it, |
2412 | call the corresponding file handler. */ | |
49307295 | 2413 | handler = Ffind_file_name_handler (abspath, Qfile_modes); |
32f4334d | 2414 | if (!NILP (handler)) |
09121adc | 2415 | return call2 (handler, Qfile_modes, abspath); |
32f4334d | 2416 | |
570d7624 JB |
2417 | if (stat (XSTRING (abspath)->data, &st) < 0) |
2418 | return Qnil; | |
3ace87e3 KH |
2419 | #ifdef MSDOS |
2420 | { | |
2421 | int len; | |
2422 | char *suffix; | |
2423 | if (S_ISREG (st.st_mode) | |
2424 | && (len = XSTRING (abspath)->size) >= 5 | |
2425 | && (stricmp ((suffix = XSTRING (abspath)->data + len-4), ".com") == 0 | |
2426 | || stricmp (suffix, ".exe") == 0 | |
2427 | || stricmp (suffix, ".bat") == 0)) | |
2428 | st.st_mode |= S_IEXEC; | |
2429 | } | |
2430 | #endif /* MSDOS */ | |
2431 | ||
570d7624 JB |
2432 | return make_number (st.st_mode & 07777); |
2433 | } | |
2434 | ||
2435 | DEFUN ("set-file-modes", Fset_file_modes, Sset_file_modes, 2, 2, 0, | |
2436 | "Set mode bits of FILE to MODE (an integer).\n\ | |
2437 | Only the 12 low bits of MODE are used.") | |
2438 | (filename, mode) | |
2439 | Lisp_Object filename, mode; | |
2440 | { | |
2441 | Lisp_Object abspath; | |
32f4334d | 2442 | Lisp_Object handler; |
570d7624 JB |
2443 | |
2444 | abspath = Fexpand_file_name (filename, current_buffer->directory); | |
2445 | CHECK_NUMBER (mode, 1); | |
2446 | ||
32f4334d RS |
2447 | /* If the file name has special constructs in it, |
2448 | call the corresponding file handler. */ | |
49307295 | 2449 | handler = Ffind_file_name_handler (abspath, Qset_file_modes); |
32f4334d | 2450 | if (!NILP (handler)) |
09121adc | 2451 | return call3 (handler, Qset_file_modes, abspath, mode); |
32f4334d | 2452 | |
570d7624 JB |
2453 | #ifndef APOLLO |
2454 | if (chmod (XSTRING (abspath)->data, XINT (mode)) < 0) | |
2455 | report_file_error ("Doing chmod", Fcons (abspath, Qnil)); | |
2456 | #else /* APOLLO */ | |
2457 | if (!egetenv ("USE_DOMAIN_ACLS")) | |
2458 | { | |
2459 | struct stat st; | |
2460 | struct timeval tvp[2]; | |
2461 | ||
2462 | /* chmod on apollo also change the file's modtime; need to save the | |
2463 | modtime and then restore it. */ | |
2464 | if (stat (XSTRING (abspath)->data, &st) < 0) | |
2465 | { | |
2466 | report_file_error ("Doing chmod", Fcons (abspath, Qnil)); | |
2467 | return (Qnil); | |
2468 | } | |
2469 | ||
2470 | if (chmod (XSTRING (abspath)->data, XINT (mode)) < 0) | |
2471 | report_file_error ("Doing chmod", Fcons (abspath, Qnil)); | |
2472 | ||
2473 | /* reset the old accessed and modified times. */ | |
2474 | tvp[0].tv_sec = st.st_atime + 1; /* +1 due to an Apollo roundoff bug */ | |
2475 | tvp[0].tv_usec = 0; | |
2476 | tvp[1].tv_sec = st.st_mtime + 1; /* +1 due to an Apollo roundoff bug */ | |
2477 | tvp[1].tv_usec = 0; | |
2478 | ||
2479 | if (utimes (XSTRING (abspath)->data, tvp) < 0) | |
2480 | report_file_error ("Doing utimes", Fcons (abspath, Qnil)); | |
2481 | } | |
2482 | #endif /* APOLLO */ | |
2483 | ||
2484 | return Qnil; | |
2485 | } | |
2486 | ||
c24e9a53 | 2487 | DEFUN ("set-default-file-modes", Fset_default_file_modes, Sset_default_file_modes, 1, 1, 0, |
5f85ea58 RS |
2488 | "Set the file permission bits for newly created files.\n\ |
2489 | The argument MODE should be an integer; only the low 9 bits are used.\n\ | |
36a8c287 | 2490 | This setting is inherited by subprocesses.") |
5f85ea58 RS |
2491 | (mode) |
2492 | Lisp_Object mode; | |
36a8c287 | 2493 | { |
5f85ea58 | 2494 | CHECK_NUMBER (mode, 0); |
36a8c287 | 2495 | |
5f85ea58 | 2496 | umask ((~ XINT (mode)) & 0777); |
36a8c287 JB |
2497 | |
2498 | return Qnil; | |
2499 | } | |
2500 | ||
c24e9a53 | 2501 | DEFUN ("default-file-modes", Fdefault_file_modes, Sdefault_file_modes, 0, 0, 0, |
5f85ea58 RS |
2502 | "Return the default file protection for created files.\n\ |
2503 | The value is an integer.") | |
36a8c287 JB |
2504 | () |
2505 | { | |
5f85ea58 RS |
2506 | int realmask; |
2507 | Lisp_Object value; | |
36a8c287 | 2508 | |
5f85ea58 RS |
2509 | realmask = umask (0); |
2510 | umask (realmask); | |
36a8c287 | 2511 | |
5f85ea58 RS |
2512 | XSET (value, Lisp_Int, (~ realmask) & 0777); |
2513 | return value; | |
36a8c287 JB |
2514 | } |
2515 | ||
85ffea93 RS |
2516 | #ifdef unix |
2517 | ||
2518 | DEFUN ("unix-sync", Funix_sync, Sunix_sync, 0, 0, "", | |
2519 | "Tell Unix to finish all pending disk updates.") | |
2520 | () | |
2521 | { | |
2522 | sync (); | |
2523 | return Qnil; | |
2524 | } | |
2525 | ||
2526 | #endif /* unix */ | |
2527 | ||
570d7624 JB |
2528 | DEFUN ("file-newer-than-file-p", Ffile_newer_than_file_p, Sfile_newer_than_file_p, 2, 2, 0, |
2529 | "Return t if file FILE1 is newer than file FILE2.\n\ | |
2530 | If FILE1 does not exist, the answer is nil;\n\ | |
2531 | otherwise, if FILE2 does not exist, the answer is t.") | |
2532 | (file1, file2) | |
2533 | Lisp_Object file1, file2; | |
2534 | { | |
32f4334d | 2535 | Lisp_Object abspath1, abspath2; |
570d7624 JB |
2536 | struct stat st; |
2537 | int mtime1; | |
32f4334d | 2538 | Lisp_Object handler; |
09121adc | 2539 | struct gcpro gcpro1, gcpro2; |
570d7624 JB |
2540 | |
2541 | CHECK_STRING (file1, 0); | |
2542 | CHECK_STRING (file2, 0); | |
2543 | ||
09121adc RS |
2544 | abspath1 = Qnil; |
2545 | GCPRO2 (abspath1, file2); | |
32f4334d RS |
2546 | abspath1 = expand_and_dir_to_file (file1, current_buffer->directory); |
2547 | abspath2 = expand_and_dir_to_file (file2, current_buffer->directory); | |
09121adc | 2548 | UNGCPRO; |
570d7624 | 2549 | |
32f4334d RS |
2550 | /* If the file name has special constructs in it, |
2551 | call the corresponding file handler. */ | |
49307295 | 2552 | handler = Ffind_file_name_handler (abspath1, Qfile_newer_than_file_p); |
51cf6d37 | 2553 | if (NILP (handler)) |
49307295 | 2554 | handler = Ffind_file_name_handler (abspath2, Qfile_newer_than_file_p); |
32f4334d RS |
2555 | if (!NILP (handler)) |
2556 | return call3 (handler, Qfile_newer_than_file_p, abspath1, abspath2); | |
2557 | ||
2558 | if (stat (XSTRING (abspath1)->data, &st) < 0) | |
570d7624 JB |
2559 | return Qnil; |
2560 | ||
2561 | mtime1 = st.st_mtime; | |
2562 | ||
32f4334d | 2563 | if (stat (XSTRING (abspath2)->data, &st) < 0) |
570d7624 JB |
2564 | return Qt; |
2565 | ||
2566 | return (mtime1 > st.st_mtime) ? Qt : Qnil; | |
2567 | } | |
2568 | \f | |
4c3c22f3 RS |
2569 | #ifdef MSDOS |
2570 | Lisp_Object Qfind_buffer_file_type; | |
2571 | #endif | |
2572 | ||
570d7624 | 2573 | DEFUN ("insert-file-contents", Finsert_file_contents, Sinsert_file_contents, |
3d0387c0 | 2574 | 1, 5, 0, |
570d7624 | 2575 | "Insert contents of file FILENAME after point.\n\ |
7fded690 | 2576 | Returns list of absolute file name and length of data inserted.\n\ |
570d7624 JB |
2577 | If second argument VISIT is non-nil, the buffer's visited filename\n\ |
2578 | and last save file modtime are set, and it is marked unmodified.\n\ | |
2579 | If visiting and the file does not exist, visiting is completed\n\ | |
7fded690 JB |
2580 | before the error is signaled.\n\n\ |
2581 | The optional third and fourth arguments BEG and END\n\ | |
2582 | specify what portion of the file to insert.\n\ | |
3d0387c0 RS |
2583 | If VISIT is non-nil, BEG and END must be nil.\n\ |
2584 | If optional fifth argument REPLACE is non-nil,\n\ | |
2585 | it means replace the current buffer contents (in the accessible portion)\n\ | |
2586 | with the file contents. This is better than simply deleting and inserting\n\ | |
2587 | the whole thing because (1) it preserves some marker positions\n\ | |
2588 | and (2) it puts less data in the undo list.") | |
2589 | (filename, visit, beg, end, replace) | |
2590 | Lisp_Object filename, visit, beg, end, replace; | |
570d7624 JB |
2591 | { |
2592 | struct stat st; | |
2593 | register int fd; | |
2594 | register int inserted = 0; | |
2595 | register int how_much; | |
2596 | int count = specpdl_ptr - specpdl; | |
1a04498e | 2597 | struct gcpro gcpro1, gcpro2, gcpro3; |
d6a3cc15 RS |
2598 | Lisp_Object handler, val, insval; |
2599 | Lisp_Object p; | |
7fded690 | 2600 | int total; |
32f4334d RS |
2601 | |
2602 | val = Qnil; | |
d6a3cc15 | 2603 | p = Qnil; |
32f4334d | 2604 | |
1a04498e | 2605 | GCPRO3 (filename, val, p); |
265a9e55 | 2606 | if (!NILP (current_buffer->read_only)) |
570d7624 JB |
2607 | Fbarf_if_buffer_read_only(); |
2608 | ||
2609 | CHECK_STRING (filename, 0); | |
2610 | filename = Fexpand_file_name (filename, Qnil); | |
2611 | ||
32f4334d RS |
2612 | /* If the file name has special constructs in it, |
2613 | call the corresponding file handler. */ | |
49307295 | 2614 | handler = Ffind_file_name_handler (filename, Qinsert_file_contents); |
32f4334d RS |
2615 | if (!NILP (handler)) |
2616 | { | |
3d0387c0 RS |
2617 | val = call6 (handler, Qinsert_file_contents, filename, |
2618 | visit, beg, end, replace); | |
32f4334d RS |
2619 | goto handled; |
2620 | } | |
2621 | ||
570d7624 JB |
2622 | fd = -1; |
2623 | ||
2624 | #ifndef APOLLO | |
99bc28f4 | 2625 | if (stat (XSTRING (filename)->data, &st) < 0) |
570d7624 | 2626 | #else |
4018b5ef | 2627 | if ((fd = open (XSTRING (filename)->data, O_RDONLY)) < 0 |
570d7624 JB |
2628 | || fstat (fd, &st) < 0) |
2629 | #endif /* not APOLLO */ | |
2630 | { | |
2631 | if (fd >= 0) close (fd); | |
99bc28f4 | 2632 | badopen: |
265a9e55 | 2633 | if (NILP (visit)) |
570d7624 JB |
2634 | report_file_error ("Opening input file", Fcons (filename, Qnil)); |
2635 | st.st_mtime = -1; | |
2636 | how_much = 0; | |
2637 | goto notfound; | |
2638 | } | |
2639 | ||
99bc28f4 | 2640 | #ifdef S_IFREG |
be53b411 JB |
2641 | /* This code will need to be changed in order to work on named |
2642 | pipes, and it's probably just not worth it. So we should at | |
2643 | least signal an error. */ | |
99bc28f4 | 2644 | if (!S_ISREG (st.st_mode)) |
be53b411 | 2645 | Fsignal (Qfile_error, |
99bc28f4 | 2646 | Fcons (build_string ("not a regular file"), |
be53b411 JB |
2647 | Fcons (filename, Qnil))); |
2648 | #endif | |
2649 | ||
99bc28f4 | 2650 | if (fd < 0) |
4018b5ef | 2651 | if ((fd = open (XSTRING (filename)->data, O_RDONLY)) < 0) |
99bc28f4 KH |
2652 | goto badopen; |
2653 | ||
2654 | /* Replacement should preserve point as it preserves markers. */ | |
2655 | if (!NILP (replace)) | |
2656 | record_unwind_protect (restore_point_unwind, Fpoint_marker ()); | |
2657 | ||
2658 | record_unwind_protect (close_file_unwind, make_number (fd)); | |
2659 | ||
570d7624 JB |
2660 | /* Supposedly happens on VMS. */ |
2661 | if (st.st_size < 0) | |
2662 | error ("File size is negative"); | |
be53b411 | 2663 | |
7fded690 JB |
2664 | if (!NILP (beg) || !NILP (end)) |
2665 | if (!NILP (visit)) | |
2666 | error ("Attempt to visit less than an entire file"); | |
2667 | ||
2668 | if (!NILP (beg)) | |
2669 | CHECK_NUMBER (beg, 0); | |
2670 | else | |
2671 | XFASTINT (beg) = 0; | |
2672 | ||
2673 | if (!NILP (end)) | |
2674 | CHECK_NUMBER (end, 0); | |
2675 | else | |
2676 | { | |
2677 | XSETINT (end, st.st_size); | |
2678 | if (XINT (end) != st.st_size) | |
2679 | error ("maximum buffer size exceeded"); | |
2680 | } | |
2681 | ||
3d0387c0 RS |
2682 | /* If requested, replace the accessible part of the buffer |
2683 | with the file contents. Avoid replacing text at the | |
2684 | beginning or end of the buffer that matches the file contents; | |
2685 | that preserves markers pointing to the unchanged parts. */ | |
e54d3b5d RS |
2686 | #ifdef MSDOS |
2687 | /* On MSDOS, replace mode doesn't really work, except for binary files, | |
2688 | and it's not worth supporting just for them. */ | |
2689 | if (!NILP (replace)) | |
2690 | { | |
2691 | replace = Qnil; | |
2692 | XFASTINT (beg) = 0; | |
2693 | XFASTINT (end) = st.st_size; | |
2694 | del_range_1 (BEGV, ZV, 0); | |
2695 | } | |
2696 | #else /* MSDOS */ | |
3d0387c0 RS |
2697 | if (!NILP (replace)) |
2698 | { | |
268466ed | 2699 | unsigned char buffer[1 << 14]; |
3d0387c0 RS |
2700 | int same_at_start = BEGV; |
2701 | int same_at_end = ZV; | |
9c28748f RS |
2702 | int overlap; |
2703 | ||
3d0387c0 RS |
2704 | immediate_quit = 1; |
2705 | QUIT; | |
2706 | /* Count how many chars at the start of the file | |
2707 | match the text at the beginning of the buffer. */ | |
2708 | while (1) | |
2709 | { | |
2710 | int nread, bufpos; | |
2711 | ||
2712 | nread = read (fd, buffer, sizeof buffer); | |
2713 | if (nread < 0) | |
2714 | error ("IO error reading %s: %s", | |
2715 | XSTRING (filename)->data, strerror (errno)); | |
2716 | else if (nread == 0) | |
2717 | break; | |
2718 | bufpos = 0; | |
2719 | while (bufpos < nread && same_at_start < ZV | |
2720 | && FETCH_CHAR (same_at_start) == buffer[bufpos]) | |
2721 | same_at_start++, bufpos++; | |
2722 | /* If we found a discrepancy, stop the scan. | |
2723 | Otherwise loop around and scan the next bufferfull. */ | |
2724 | if (bufpos != nread) | |
2725 | break; | |
2726 | } | |
2727 | immediate_quit = 0; | |
2728 | /* If the file matches the buffer completely, | |
2729 | there's no need to replace anything. */ | |
1051b3b3 | 2730 | if (same_at_start - BEGV == st.st_size) |
3d0387c0 RS |
2731 | { |
2732 | close (fd); | |
a1d2b64a | 2733 | specpdl_ptr--; |
1051b3b3 RS |
2734 | /* Truncate the buffer to the size of the file. */ |
2735 | del_range_1 (same_at_start, same_at_end, 0); | |
3d0387c0 RS |
2736 | goto handled; |
2737 | } | |
2738 | immediate_quit = 1; | |
2739 | QUIT; | |
2740 | /* Count how many chars at the end of the file | |
2741 | match the text at the end of the buffer. */ | |
2742 | while (1) | |
2743 | { | |
2744 | int total_read, nread, bufpos, curpos, trial; | |
2745 | ||
2746 | /* At what file position are we now scanning? */ | |
2747 | curpos = st.st_size - (ZV - same_at_end); | |
fc81fa9e KH |
2748 | /* If the entire file matches the buffer tail, stop the scan. */ |
2749 | if (curpos == 0) | |
2750 | break; | |
3d0387c0 RS |
2751 | /* How much can we scan in the next step? */ |
2752 | trial = min (curpos, sizeof buffer); | |
2753 | if (lseek (fd, curpos - trial, 0) < 0) | |
2754 | report_file_error ("Setting file position", | |
2755 | Fcons (filename, Qnil)); | |
2756 | ||
2757 | total_read = 0; | |
2758 | while (total_read < trial) | |
2759 | { | |
2760 | nread = read (fd, buffer + total_read, trial - total_read); | |
2761 | if (nread <= 0) | |
2762 | error ("IO error reading %s: %s", | |
2763 | XSTRING (filename)->data, strerror (errno)); | |
2764 | total_read += nread; | |
2765 | } | |
2766 | /* Scan this bufferfull from the end, comparing with | |
2767 | the Emacs buffer. */ | |
2768 | bufpos = total_read; | |
2769 | /* Compare with same_at_start to avoid counting some buffer text | |
2770 | as matching both at the file's beginning and at the end. */ | |
2771 | while (bufpos > 0 && same_at_end > same_at_start | |
2772 | && FETCH_CHAR (same_at_end - 1) == buffer[bufpos - 1]) | |
2773 | same_at_end--, bufpos--; | |
2774 | /* If we found a discrepancy, stop the scan. | |
2775 | Otherwise loop around and scan the preceding bufferfull. */ | |
2776 | if (bufpos != 0) | |
2777 | break; | |
2778 | } | |
2779 | immediate_quit = 0; | |
9c28748f RS |
2780 | |
2781 | /* Don't try to reuse the same piece of text twice. */ | |
2782 | overlap = same_at_start - BEGV - (same_at_end + st.st_size - ZV); | |
2783 | if (overlap > 0) | |
2784 | same_at_end += overlap; | |
2785 | ||
3d0387c0 RS |
2786 | /* Arrange to read only the nonmatching middle part of the file. */ |
2787 | XFASTINT (beg) = same_at_start - BEGV; | |
2788 | XFASTINT (end) = st.st_size - (ZV - same_at_end); | |
9c28748f | 2789 | |
251f623e | 2790 | del_range_1 (same_at_start, same_at_end, 0); |
a1d2b64a RS |
2791 | /* Insert from the file at the proper position. */ |
2792 | SET_PT (same_at_start); | |
3d0387c0 | 2793 | } |
e54d3b5d | 2794 | #endif /* MSDOS */ |
3d0387c0 | 2795 | |
7fded690 JB |
2796 | total = XINT (end) - XINT (beg); |
2797 | ||
570d7624 JB |
2798 | { |
2799 | register Lisp_Object temp; | |
2800 | ||
2801 | /* Make sure point-max won't overflow after this insertion. */ | |
7fded690 JB |
2802 | XSET (temp, Lisp_Int, total); |
2803 | if (total != XINT (temp)) | |
570d7624 JB |
2804 | error ("maximum buffer size exceeded"); |
2805 | } | |
2806 | ||
57d8d468 | 2807 | if (NILP (visit) && total > 0) |
570d7624 JB |
2808 | prepare_to_modify_buffer (point, point); |
2809 | ||
2810 | move_gap (point); | |
7fded690 JB |
2811 | if (GAP_SIZE < total) |
2812 | make_gap (total - GAP_SIZE); | |
2813 | ||
a1d2b64a | 2814 | if (XINT (beg) != 0 || !NILP (replace)) |
7fded690 JB |
2815 | { |
2816 | if (lseek (fd, XINT (beg), 0) < 0) | |
2817 | report_file_error ("Setting file position", Fcons (filename, Qnil)); | |
2818 | } | |
2819 | ||
a1d2b64a RS |
2820 | how_much = 0; |
2821 | while (inserted < total) | |
570d7624 | 2822 | { |
7fded690 | 2823 | int try = min (total - inserted, 64 << 10); |
b5148e85 RS |
2824 | int this; |
2825 | ||
2826 | /* Allow quitting out of the actual I/O. */ | |
2827 | immediate_quit = 1; | |
2828 | QUIT; | |
2829 | this = read (fd, &FETCH_CHAR (point + inserted - 1) + 1, try); | |
2830 | immediate_quit = 0; | |
570d7624 JB |
2831 | |
2832 | if (this <= 0) | |
2833 | { | |
2834 | how_much = this; | |
2835 | break; | |
2836 | } | |
2837 | ||
2838 | GPT += this; | |
2839 | GAP_SIZE -= this; | |
2840 | ZV += this; | |
2841 | Z += this; | |
2842 | inserted += this; | |
2843 | } | |
2844 | ||
4c3c22f3 RS |
2845 | #ifdef MSDOS |
2846 | /* Demacs 1.1.1 91/10/16 HIRANO Satoshi, MW July 1993 */ | |
2847 | /* Determine file type from name and remove LFs from CR-LFs if the file | |
2848 | is deemed to be a text file. */ | |
2849 | { | |
2850 | struct gcpro gcpro1; | |
e762e30a KH |
2851 | Lisp_Object code; |
2852 | code = Qnil; | |
4c3c22f3 | 2853 | GCPRO1 (filename); |
bf162ea8 RS |
2854 | current_buffer->buffer_file_type |
2855 | = call1 (Qfind_buffer_file_type, filename); | |
4c3c22f3 | 2856 | UNGCPRO; |
bf162ea8 | 2857 | if (NILP (current_buffer->buffer_file_type)) |
4c3c22f3 | 2858 | { |
a1d2b64a RS |
2859 | int reduced_size |
2860 | = inserted - crlf_to_lf (inserted, &FETCH_CHAR (point - 1) + 1); | |
4c3c22f3 RS |
2861 | ZV -= reduced_size; |
2862 | Z -= reduced_size; | |
2863 | GPT -= reduced_size; | |
2864 | GAP_SIZE += reduced_size; | |
2865 | inserted -= reduced_size; | |
2866 | } | |
2867 | } | |
2868 | #endif | |
2869 | ||
570d7624 | 2870 | if (inserted > 0) |
7d8451f1 RS |
2871 | { |
2872 | record_insert (point, inserted); | |
8d4e077b JA |
2873 | |
2874 | /* Only defined if Emacs is compiled with USE_TEXT_PROPERTIES */ | |
2875 | offset_intervals (current_buffer, point, inserted); | |
7d8451f1 RS |
2876 | MODIFF++; |
2877 | } | |
570d7624 JB |
2878 | |
2879 | close (fd); | |
2880 | ||
a1d2b64a RS |
2881 | /* Discard the unwind protect for closing the file. */ |
2882 | specpdl_ptr--; | |
570d7624 JB |
2883 | |
2884 | if (how_much < 0) | |
2885 | error ("IO error reading %s: %s", | |
ce97267f | 2886 | XSTRING (filename)->data, strerror (errno)); |
570d7624 JB |
2887 | |
2888 | notfound: | |
32f4334d | 2889 | handled: |
570d7624 | 2890 | |
265a9e55 | 2891 | if (!NILP (visit)) |
570d7624 | 2892 | { |
cfadd376 RS |
2893 | if (!EQ (current_buffer->undo_list, Qt)) |
2894 | current_buffer->undo_list = Qnil; | |
570d7624 JB |
2895 | #ifdef APOLLO |
2896 | stat (XSTRING (filename)->data, &st); | |
2897 | #endif | |
62bcf009 | 2898 | |
a7e82472 RS |
2899 | if (NILP (handler)) |
2900 | { | |
2901 | current_buffer->modtime = st.st_mtime; | |
2902 | current_buffer->filename = filename; | |
2903 | } | |
62bcf009 | 2904 | |
570d7624 JB |
2905 | current_buffer->save_modified = MODIFF; |
2906 | current_buffer->auto_save_modified = MODIFF; | |
2907 | XFASTINT (current_buffer->save_length) = Z - BEG; | |
2908 | #ifdef CLASH_DETECTION | |
32f4334d RS |
2909 | if (NILP (handler)) |
2910 | { | |
2911 | if (!NILP (current_buffer->filename)) | |
2912 | unlock_file (current_buffer->filename); | |
2913 | unlock_file (filename); | |
2914 | } | |
570d7624 | 2915 | #endif /* CLASH_DETECTION */ |
570d7624 | 2916 | /* If visiting nonexistent file, return nil. */ |
32f4334d | 2917 | if (current_buffer->modtime == -1) |
570d7624 JB |
2918 | report_file_error ("Opening input file", Fcons (filename, Qnil)); |
2919 | } | |
2920 | ||
62bcf009 | 2921 | if (inserted > 0 && NILP (visit) && total > 0) |
d2cad97d | 2922 | signal_after_change (point, 0, inserted); |
570d7624 | 2923 | |
d6a3cc15 RS |
2924 | if (inserted > 0) |
2925 | { | |
2926 | p = Vafter_insert_file_functions; | |
2927 | while (!NILP (p)) | |
2928 | { | |
2929 | insval = call1 (Fcar (p), make_number (inserted)); | |
2930 | if (!NILP (insval)) | |
2931 | { | |
2932 | CHECK_NUMBER (insval, 0); | |
2933 | inserted = XFASTINT (insval); | |
2934 | } | |
2935 | QUIT; | |
2936 | p = Fcdr (p); | |
2937 | } | |
2938 | } | |
2939 | ||
a1d2b64a RS |
2940 | if (NILP (val)) |
2941 | val = Fcons (filename, | |
2942 | Fcons (make_number (inserted), | |
2943 | Qnil)); | |
2944 | ||
2945 | RETURN_UNGCPRO (unbind_to (count, val)); | |
570d7624 | 2946 | } |
7fded690 | 2947 | \f |
d6a3cc15 RS |
2948 | static Lisp_Object build_annotations (); |
2949 | ||
6fc6f94b RS |
2950 | /* If build_annotations switched buffers, switch back to BUF. |
2951 | Kill the temporary buffer that was selected in the meantime. */ | |
2952 | ||
2953 | static Lisp_Object | |
2954 | build_annotations_unwind (buf) | |
2955 | Lisp_Object buf; | |
2956 | { | |
2957 | Lisp_Object tembuf; | |
2958 | ||
2959 | if (XBUFFER (buf) == current_buffer) | |
2960 | return Qnil; | |
2961 | tembuf = Fcurrent_buffer (); | |
2962 | Fset_buffer (buf); | |
2963 | Fkill_buffer (tembuf); | |
2964 | return Qnil; | |
2965 | } | |
2966 | ||
570d7624 JB |
2967 | DEFUN ("write-region", Fwrite_region, Swrite_region, 3, 5, |
2968 | "r\nFWrite region to file: ", | |
2969 | "Write current region into specified file.\n\ | |
2970 | When called from a program, takes three arguments:\n\ | |
2971 | START, END and FILENAME. START and END are buffer positions.\n\ | |
2972 | Optional fourth argument APPEND if non-nil means\n\ | |
2973 | append to existing file contents (if any).\n\ | |
2974 | Optional fifth argument VISIT if t means\n\ | |
2975 | set the last-save-file-modtime of buffer to this file's modtime\n\ | |
2976 | and mark buffer not modified.\n\ | |
3b7792ed RS |
2977 | If VISIT is a string, it is a second file name;\n\ |
2978 | the output goes to FILENAME, but the buffer is marked as visiting VISIT.\n\ | |
2979 | VISIT is also the file name to lock and unlock for clash detection.\n\ | |
1d386d28 RS |
2980 | If VISIT is neither t nor nil nor a string,\n\ |
2981 | that means do not print the \"Wrote file\" message.\n\ | |
570d7624 JB |
2982 | Kludgy feature: if START is a string, then that string is written\n\ |
2983 | to the file, instead of any buffer contents, and END is ignored.") | |
2984 | (start, end, filename, append, visit) | |
2985 | Lisp_Object start, end, filename, append, visit; | |
2986 | { | |
2987 | register int desc; | |
2988 | int failure; | |
2989 | int save_errno; | |
2990 | unsigned char *fn; | |
2991 | struct stat st; | |
c975dd7a | 2992 | int tem; |
570d7624 | 2993 | int count = specpdl_ptr - specpdl; |
6fc6f94b | 2994 | int count1; |
570d7624 JB |
2995 | #ifdef VMS |
2996 | unsigned char *fname = 0; /* If non-0, original filename (must rename) */ | |
2997 | #endif /* VMS */ | |
3eac9910 | 2998 | Lisp_Object handler; |
4ad827c5 | 2999 | Lisp_Object visit_file; |
d6a3cc15 RS |
3000 | Lisp_Object annotations; |
3001 | int visiting, quietly; | |
3b7792ed | 3002 | struct gcpro gcpro1, gcpro2, gcpro3, gcpro4; |
6fc6f94b | 3003 | struct buffer *given_buffer; |
4c3c22f3 RS |
3004 | #ifdef MSDOS |
3005 | int buffer_file_type | |
3006 | = NILP (current_buffer->buffer_file_type) ? O_TEXT : O_BINARY; | |
3007 | #endif | |
570d7624 | 3008 | |
561cb8e1 | 3009 | if (!NILP (start) && !STRINGP (start)) |
570d7624 JB |
3010 | validate_region (&start, &end); |
3011 | ||
1a04498e | 3012 | GCPRO2 (filename, visit); |
570d7624 | 3013 | filename = Fexpand_file_name (filename, Qnil); |
561cb8e1 | 3014 | if (STRINGP (visit)) |
e5176bae | 3015 | visit_file = Fexpand_file_name (visit, Qnil); |
4ad827c5 RS |
3016 | else |
3017 | visit_file = filename; | |
1a04498e | 3018 | UNGCPRO; |
4ad827c5 | 3019 | |
561cb8e1 | 3020 | visiting = (EQ (visit, Qt) || STRINGP (visit)); |
d6a3cc15 RS |
3021 | quietly = !NILP (visit); |
3022 | ||
3023 | annotations = Qnil; | |
3024 | ||
3025 | GCPRO4 (start, filename, annotations, visit_file); | |
570d7624 | 3026 | |
32f4334d RS |
3027 | /* If the file name has special constructs in it, |
3028 | call the corresponding file handler. */ | |
49307295 | 3029 | handler = Ffind_file_name_handler (filename, Qwrite_region); |
b56ad927 RS |
3030 | /* If FILENAME has no handler, see if VISIT has one. */ |
3031 | if (NILP (handler) && XTYPE (visit) == Lisp_String) | |
49307295 | 3032 | handler = Ffind_file_name_handler (visit, Qwrite_region); |
3eac9910 | 3033 | |
32f4334d RS |
3034 | if (!NILP (handler)) |
3035 | { | |
32f4334d | 3036 | Lisp_Object val; |
51cf6d37 RS |
3037 | val = call6 (handler, Qwrite_region, start, end, |
3038 | filename, append, visit); | |
32f4334d | 3039 | |
d6a3cc15 | 3040 | if (visiting) |
32f4334d | 3041 | { |
32f4334d RS |
3042 | current_buffer->save_modified = MODIFF; |
3043 | XFASTINT (current_buffer->save_length) = Z - BEG; | |
3b7792ed | 3044 | current_buffer->filename = visit_file; |
32f4334d | 3045 | } |
09121adc | 3046 | UNGCPRO; |
32f4334d RS |
3047 | return val; |
3048 | } | |
3049 | ||
561cb8e1 RS |
3050 | /* Special kludge to simplify auto-saving. */ |
3051 | if (NILP (start)) | |
3052 | { | |
3053 | XFASTINT (start) = BEG; | |
3054 | XFASTINT (end) = Z; | |
3055 | } | |
3056 | ||
6fc6f94b RS |
3057 | record_unwind_protect (build_annotations_unwind, Fcurrent_buffer ()); |
3058 | count1 = specpdl_ptr - specpdl; | |
3059 | ||
3060 | given_buffer = current_buffer; | |
d6a3cc15 | 3061 | annotations = build_annotations (start, end); |
6fc6f94b RS |
3062 | if (current_buffer != given_buffer) |
3063 | { | |
3064 | start = BEGV; | |
3065 | end = ZV; | |
3066 | } | |
d6a3cc15 | 3067 | |
570d7624 JB |
3068 | #ifdef CLASH_DETECTION |
3069 | if (!auto_saving) | |
3b7792ed | 3070 | lock_file (visit_file); |
570d7624 JB |
3071 | #endif /* CLASH_DETECTION */ |
3072 | ||
09121adc | 3073 | fn = XSTRING (filename)->data; |
570d7624 | 3074 | desc = -1; |
265a9e55 | 3075 | if (!NILP (append)) |
4c3c22f3 RS |
3076 | #ifdef MSDOS |
3077 | desc = open (fn, O_WRONLY | buffer_file_type); | |
3078 | #else | |
570d7624 | 3079 | desc = open (fn, O_WRONLY); |
4c3c22f3 | 3080 | #endif |
570d7624 JB |
3081 | |
3082 | if (desc < 0) | |
3083 | #ifdef VMS | |
3084 | if (auto_saving) /* Overwrite any previous version of autosave file */ | |
3085 | { | |
3086 | vms_truncate (fn); /* if fn exists, truncate to zero length */ | |
3087 | desc = open (fn, O_RDWR); | |
3088 | if (desc < 0) | |
561cb8e1 | 3089 | desc = creat_copy_attrs (STRINGP (current_buffer->filename) |
b72dea2a JB |
3090 | ? XSTRING (current_buffer->filename)->data : 0, |
3091 | fn); | |
570d7624 JB |
3092 | } |
3093 | else /* Write to temporary name and rename if no errors */ | |
3094 | { | |
3095 | Lisp_Object temp_name; | |
3096 | temp_name = Ffile_name_directory (filename); | |
3097 | ||
265a9e55 | 3098 | if (!NILP (temp_name)) |
570d7624 JB |
3099 | { |
3100 | temp_name = Fmake_temp_name (concat2 (temp_name, | |
3101 | build_string ("$$SAVE$$"))); | |
3102 | fname = XSTRING (filename)->data; | |
3103 | fn = XSTRING (temp_name)->data; | |
3104 | desc = creat_copy_attrs (fname, fn); | |
3105 | if (desc < 0) | |
3106 | { | |
3107 | /* If we can't open the temporary file, try creating a new | |
3108 | version of the original file. VMS "creat" creates a | |
3109 | new version rather than truncating an existing file. */ | |
3110 | fn = fname; | |
3111 | fname = 0; | |
3112 | desc = creat (fn, 0666); | |
3113 | #if 0 /* This can clobber an existing file and fail to replace it, | |
3114 | if the user runs out of space. */ | |
3115 | if (desc < 0) | |
3116 | { | |
3117 | /* We can't make a new version; | |
3118 | try to truncate and rewrite existing version if any. */ | |
3119 | vms_truncate (fn); | |
3120 | desc = open (fn, O_RDWR); | |
3121 | } | |
3122 | #endif | |
3123 | } | |
3124 | } | |
3125 | else | |
3126 | desc = creat (fn, 0666); | |
3127 | } | |
3128 | #else /* not VMS */ | |
4c3c22f3 RS |
3129 | #ifdef MSDOS |
3130 | desc = open (fn, | |
3131 | O_WRONLY | O_TRUNC | O_CREAT | buffer_file_type, | |
3132 | S_IREAD | S_IWRITE); | |
3133 | #else /* not MSDOS */ | |
570d7624 | 3134 | desc = creat (fn, auto_saving ? auto_save_mode_bits : 0666); |
4c3c22f3 | 3135 | #endif /* not MSDOS */ |
570d7624 JB |
3136 | #endif /* not VMS */ |
3137 | ||
09121adc RS |
3138 | UNGCPRO; |
3139 | ||
570d7624 JB |
3140 | if (desc < 0) |
3141 | { | |
3142 | #ifdef CLASH_DETECTION | |
3143 | save_errno = errno; | |
3b7792ed | 3144 | if (!auto_saving) unlock_file (visit_file); |
570d7624 JB |
3145 | errno = save_errno; |
3146 | #endif /* CLASH_DETECTION */ | |
3147 | report_file_error ("Opening output file", Fcons (filename, Qnil)); | |
3148 | } | |
3149 | ||
3150 | record_unwind_protect (close_file_unwind, make_number (desc)); | |
3151 | ||
265a9e55 | 3152 | if (!NILP (append)) |
570d7624 JB |
3153 | if (lseek (desc, 0, 2) < 0) |
3154 | { | |
3155 | #ifdef CLASH_DETECTION | |
3b7792ed | 3156 | if (!auto_saving) unlock_file (visit_file); |
570d7624 JB |
3157 | #endif /* CLASH_DETECTION */ |
3158 | report_file_error ("Lseek error", Fcons (filename, Qnil)); | |
3159 | } | |
3160 | ||
3161 | #ifdef VMS | |
3162 | /* | |
3163 | * Kludge Warning: The VMS C RTL likes to insert carriage returns | |
3164 | * if we do writes that don't end with a carriage return. Furthermore | |
3165 | * it cannot handle writes of more then 16K. The modified | |
3166 | * version of "sys_write" in SYSDEP.C (see comment there) copes with | |
3167 | * this EXCEPT for the last record (iff it doesn't end with a carriage | |
3168 | * return). This implies that if your buffer doesn't end with a carriage | |
3169 | * return, you get one free... tough. However it also means that if | |
3170 | * we make two calls to sys_write (a la the following code) you can | |
3171 | * get one at the gap as well. The easiest way to fix this (honest) | |
3172 | * is to move the gap to the next newline (or the end of the buffer). | |
3173 | * Thus this change. | |
3174 | * | |
3175 | * Yech! | |
3176 | */ | |
3177 | if (GPT > BEG && GPT_ADDR[-1] != '\n') | |
3178 | move_gap (find_next_newline (GPT, 1)); | |
3179 | #endif | |
3180 | ||
3181 | failure = 0; | |
3182 | immediate_quit = 1; | |
3183 | ||
561cb8e1 | 3184 | if (STRINGP (start)) |
570d7624 | 3185 | { |
d6a3cc15 RS |
3186 | failure = 0 > a_write (desc, XSTRING (start)->data, |
3187 | XSTRING (start)->size, 0, &annotations); | |
570d7624 JB |
3188 | save_errno = errno; |
3189 | } | |
3190 | else if (XINT (start) != XINT (end)) | |
3191 | { | |
c975dd7a | 3192 | int nwritten = 0; |
570d7624 JB |
3193 | if (XINT (start) < GPT) |
3194 | { | |
3195 | register int end1 = XINT (end); | |
3196 | tem = XINT (start); | |
d6a3cc15 | 3197 | failure = 0 > a_write (desc, &FETCH_CHAR (tem), |
c975dd7a RS |
3198 | min (GPT, end1) - tem, tem, &annotations); |
3199 | nwritten += min (GPT, end1) - tem; | |
570d7624 JB |
3200 | save_errno = errno; |
3201 | } | |
3202 | ||
3203 | if (XINT (end) > GPT && !failure) | |
3204 | { | |
3205 | tem = XINT (start); | |
3206 | tem = max (tem, GPT); | |
d6a3cc15 | 3207 | failure = 0 > a_write (desc, &FETCH_CHAR (tem), XINT (end) - tem, |
c975dd7a RS |
3208 | tem, &annotations); |
3209 | nwritten += XINT (end) - tem; | |
d6a3cc15 RS |
3210 | save_errno = errno; |
3211 | } | |
c975dd7a RS |
3212 | |
3213 | if (nwritten == 0) | |
d6a3cc15 RS |
3214 | { |
3215 | /* If file was empty, still need to write the annotations */ | |
c975dd7a | 3216 | failure = 0 > a_write (desc, "", 0, XINT (start), &annotations); |
570d7624 JB |
3217 | save_errno = errno; |
3218 | } | |
3219 | } | |
3220 | ||
3221 | immediate_quit = 0; | |
3222 | ||
6e23c83e | 3223 | #ifdef HAVE_FSYNC |
570d7624 JB |
3224 | /* Note fsync appears to change the modtime on BSD4.2 (both vax and sun). |
3225 | Disk full in NFS may be reported here. */ | |
1daffa1c RS |
3226 | /* mib says that closing the file will try to write as fast as NFS can do |
3227 | it, and that means the fsync here is not crucial for autosave files. */ | |
3228 | if (!auto_saving && fsync (desc) < 0) | |
570d7624 | 3229 | failure = 1, save_errno = errno; |
570d7624 JB |
3230 | #endif |
3231 | ||
3232 | /* Spurious "file has changed on disk" warnings have been | |
3233 | observed on Suns as well. | |
3234 | It seems that `close' can change the modtime, under nfs. | |
3235 | ||
3236 | (This has supposedly been fixed in Sunos 4, | |
3237 | but who knows about all the other machines with NFS?) */ | |
3238 | #if 0 | |
3239 | ||
3240 | /* On VMS and APOLLO, must do the stat after the close | |
3241 | since closing changes the modtime. */ | |
3242 | #ifndef VMS | |
3243 | #ifndef APOLLO | |
3244 | /* Recall that #if defined does not work on VMS. */ | |
3245 | #define FOO | |
3246 | fstat (desc, &st); | |
3247 | #endif | |
3248 | #endif | |
3249 | #endif | |
3250 | ||
3251 | /* NFS can report a write failure now. */ | |
3252 | if (close (desc) < 0) | |
3253 | failure = 1, save_errno = errno; | |
3254 | ||
3255 | #ifdef VMS | |
3256 | /* If we wrote to a temporary name and had no errors, rename to real name. */ | |
3257 | if (fname) | |
3258 | { | |
3259 | if (!failure) | |
3260 | failure = (rename (fn, fname) != 0), save_errno = errno; | |
3261 | fn = fname; | |
3262 | } | |
3263 | #endif /* VMS */ | |
3264 | ||
3265 | #ifndef FOO | |
3266 | stat (fn, &st); | |
3267 | #endif | |
6fc6f94b RS |
3268 | /* Discard the unwind protect for close_file_unwind. */ |
3269 | specpdl_ptr = specpdl + count1; | |
3270 | /* Restore the original current buffer. */ | |
98295b48 | 3271 | visit_file = unbind_to (count, visit_file); |
570d7624 JB |
3272 | |
3273 | #ifdef CLASH_DETECTION | |
3274 | if (!auto_saving) | |
3b7792ed | 3275 | unlock_file (visit_file); |
570d7624 JB |
3276 | #endif /* CLASH_DETECTION */ |
3277 | ||
3278 | /* Do this before reporting IO error | |
3279 | to avoid a "file has changed on disk" warning on | |
3280 | next attempt to save. */ | |
d6a3cc15 | 3281 | if (visiting) |
570d7624 JB |
3282 | current_buffer->modtime = st.st_mtime; |
3283 | ||
3284 | if (failure) | |
ce97267f | 3285 | error ("IO error writing %s: %s", fn, strerror (save_errno)); |
570d7624 | 3286 | |
d6a3cc15 | 3287 | if (visiting) |
570d7624 JB |
3288 | { |
3289 | current_buffer->save_modified = MODIFF; | |
3290 | XFASTINT (current_buffer->save_length) = Z - BEG; | |
3b7792ed | 3291 | current_buffer->filename = visit_file; |
f4226e89 | 3292 | update_mode_lines++; |
570d7624 | 3293 | } |
d6a3cc15 | 3294 | else if (quietly) |
570d7624 JB |
3295 | return Qnil; |
3296 | ||
3297 | if (!auto_saving) | |
3b7792ed | 3298 | message ("Wrote %s", XSTRING (visit_file)->data); |
570d7624 JB |
3299 | |
3300 | return Qnil; | |
3301 | } | |
3302 | ||
d6a3cc15 RS |
3303 | Lisp_Object merge (); |
3304 | ||
3305 | DEFUN ("car-less-than-car", Fcar_less_than_car, Scar_less_than_car, 2, 2, 0, | |
2ba0ccff | 3306 | "Return t if (car A) is numerically less than (car B).") |
d6a3cc15 RS |
3307 | (a, b) |
3308 | Lisp_Object a, b; | |
3309 | { | |
3310 | return Flss (Fcar (a), Fcar (b)); | |
3311 | } | |
3312 | ||
3313 | /* Build the complete list of annotations appropriate for writing out | |
3314 | the text between START and END, by calling all the functions in | |
6fc6f94b RS |
3315 | write-region-annotate-functions and merging the lists they return. |
3316 | If one of these functions switches to a different buffer, we assume | |
3317 | that buffer contains altered text. Therefore, the caller must | |
3318 | make sure to restore the current buffer in all cases, | |
3319 | as save-excursion would do. */ | |
d6a3cc15 RS |
3320 | |
3321 | static Lisp_Object | |
3322 | build_annotations (start, end) | |
3323 | Lisp_Object start, end; | |
3324 | { | |
3325 | Lisp_Object annotations; | |
3326 | Lisp_Object p, res; | |
3327 | struct gcpro gcpro1, gcpro2; | |
3328 | ||
3329 | annotations = Qnil; | |
3330 | p = Vwrite_region_annotate_functions; | |
3331 | GCPRO2 (annotations, p); | |
3332 | while (!NILP (p)) | |
3333 | { | |
6fc6f94b RS |
3334 | struct buffer *given_buffer = current_buffer; |
3335 | Vwrite_region_annotations_so_far = annotations; | |
d6a3cc15 | 3336 | res = call2 (Fcar (p), start, end); |
6fc6f94b RS |
3337 | /* If the function makes a different buffer current, |
3338 | assume that means this buffer contains altered text to be output. | |
3339 | Reset START and END from the buffer bounds | |
3340 | and discard all previous annotations because they should have | |
3341 | been dealt with by this function. */ | |
3342 | if (current_buffer != given_buffer) | |
3343 | { | |
6fc6f94b RS |
3344 | start = BEGV; |
3345 | end = ZV; | |
3346 | annotations = Qnil; | |
3347 | } | |
d6a3cc15 RS |
3348 | Flength (res); /* Check basic validity of return value */ |
3349 | annotations = merge (annotations, res, Qcar_less_than_car); | |
3350 | p = Fcdr (p); | |
3351 | } | |
3352 | UNGCPRO; | |
3353 | return annotations; | |
3354 | } | |
3355 | ||
3356 | /* Write to descriptor DESC the LEN characters starting at ADDR, | |
3357 | assuming they start at position POS in the buffer. | |
3358 | Intersperse with them the annotations from *ANNOT | |
3359 | (those which fall within the range of positions POS to POS + LEN), | |
3360 | each at its appropriate position. | |
3361 | ||
3362 | Modify *ANNOT by discarding elements as we output them. | |
3363 | The return value is negative in case of system call failure. */ | |
3364 | ||
3365 | int | |
3366 | a_write (desc, addr, len, pos, annot) | |
3367 | int desc; | |
3368 | register char *addr; | |
3369 | register int len; | |
3370 | int pos; | |
3371 | Lisp_Object *annot; | |
3372 | { | |
3373 | Lisp_Object tem; | |
3374 | int nextpos; | |
3375 | int lastpos = pos + len; | |
3376 | ||
eb15aa18 | 3377 | while (NILP (*annot) || CONSP (*annot)) |
d6a3cc15 RS |
3378 | { |
3379 | tem = Fcar_safe (Fcar (*annot)); | |
3380 | if (INTEGERP (tem) && XINT (tem) >= pos && XFASTINT (tem) <= lastpos) | |
3381 | nextpos = XFASTINT (tem); | |
3382 | else | |
3383 | return e_write (desc, addr, lastpos - pos); | |
3384 | if (nextpos > pos) | |
3385 | { | |
3386 | if (0 > e_write (desc, addr, nextpos - pos)) | |
3387 | return -1; | |
3388 | addr += nextpos - pos; | |
3389 | pos = nextpos; | |
3390 | } | |
3391 | tem = Fcdr (Fcar (*annot)); | |
3392 | if (STRINGP (tem)) | |
3393 | { | |
3394 | if (0 > e_write (desc, XSTRING (tem)->data, XSTRING (tem)->size)) | |
3395 | return -1; | |
3396 | } | |
3397 | *annot = Fcdr (*annot); | |
3398 | } | |
3399 | } | |
3400 | ||
570d7624 JB |
3401 | int |
3402 | e_write (desc, addr, len) | |
3403 | int desc; | |
3404 | register char *addr; | |
3405 | register int len; | |
3406 | { | |
3407 | char buf[16 * 1024]; | |
3408 | register char *p, *end; | |
3409 | ||
3410 | if (!EQ (current_buffer->selective_display, Qt)) | |
3411 | return write (desc, addr, len) - len; | |
3412 | else | |
3413 | { | |
3414 | p = buf; | |
3415 | end = p + sizeof buf; | |
3416 | while (len--) | |
3417 | { | |
3418 | if (p == end) | |
3419 | { | |
3420 | if (write (desc, buf, sizeof buf) != sizeof buf) | |
3421 | return -1; | |
3422 | p = buf; | |
3423 | } | |
3424 | *p = *addr++; | |
3425 | if (*p++ == '\015') | |
3426 | p[-1] = '\n'; | |
3427 | } | |
3428 | if (p != buf) | |
3429 | if (write (desc, buf, p - buf) != p - buf) | |
3430 | return -1; | |
3431 | } | |
3432 | return 0; | |
3433 | } | |
3434 | ||
3435 | DEFUN ("verify-visited-file-modtime", Fverify_visited_file_modtime, | |
3436 | Sverify_visited_file_modtime, 1, 1, 0, | |
3437 | "Return t if last mod time of BUF's visited file matches what BUF records.\n\ | |
3438 | This means that the file has not been changed since it was visited or saved.") | |
3439 | (buf) | |
3440 | Lisp_Object buf; | |
3441 | { | |
3442 | struct buffer *b; | |
3443 | struct stat st; | |
32f4334d | 3444 | Lisp_Object handler; |
570d7624 JB |
3445 | |
3446 | CHECK_BUFFER (buf, 0); | |
3447 | b = XBUFFER (buf); | |
3448 | ||
3449 | if (XTYPE (b->filename) != Lisp_String) return Qt; | |
3450 | if (b->modtime == 0) return Qt; | |
3451 | ||
32f4334d RS |
3452 | /* If the file name has special constructs in it, |
3453 | call the corresponding file handler. */ | |
49307295 KH |
3454 | handler = Ffind_file_name_handler (b->filename, |
3455 | Qverify_visited_file_modtime); | |
32f4334d | 3456 | if (!NILP (handler)) |
09121adc | 3457 | return call2 (handler, Qverify_visited_file_modtime, buf); |
32f4334d | 3458 | |
570d7624 JB |
3459 | if (stat (XSTRING (b->filename)->data, &st) < 0) |
3460 | { | |
3461 | /* If the file doesn't exist now and didn't exist before, | |
3462 | we say that it isn't modified, provided the error is a tame one. */ | |
3463 | if (errno == ENOENT || errno == EACCES || errno == ENOTDIR) | |
3464 | st.st_mtime = -1; | |
3465 | else | |
3466 | st.st_mtime = 0; | |
3467 | } | |
3468 | if (st.st_mtime == b->modtime | |
3469 | /* If both are positive, accept them if they are off by one second. */ | |
3470 | || (st.st_mtime > 0 && b->modtime > 0 | |
3471 | && (st.st_mtime == b->modtime + 1 | |
3472 | || st.st_mtime == b->modtime - 1))) | |
3473 | return Qt; | |
3474 | return Qnil; | |
3475 | } | |
3476 | ||
3477 | DEFUN ("clear-visited-file-modtime", Fclear_visited_file_modtime, | |
3478 | Sclear_visited_file_modtime, 0, 0, 0, | |
3479 | "Clear out records of last mod time of visited file.\n\ | |
3480 | Next attempt to save will certainly not complain of a discrepancy.") | |
3481 | () | |
3482 | { | |
3483 | current_buffer->modtime = 0; | |
3484 | return Qnil; | |
3485 | } | |
3486 | ||
f5d5eccf RS |
3487 | DEFUN ("visited-file-modtime", Fvisited_file_modtime, |
3488 | Svisited_file_modtime, 0, 0, 0, | |
3489 | "Return the current buffer's recorded visited file modification time.\n\ | |
3490 | The value is a list of the form (HIGH . LOW), like the time values\n\ | |
3491 | that `file-attributes' returns.") | |
3492 | () | |
3493 | { | |
3494 | return long_to_cons (current_buffer->modtime); | |
3495 | } | |
3496 | ||
570d7624 | 3497 | DEFUN ("set-visited-file-modtime", Fset_visited_file_modtime, |
f5d5eccf | 3498 | Sset_visited_file_modtime, 0, 1, 0, |
570d7624 JB |
3499 | "Update buffer's recorded modification time from the visited file's time.\n\ |
3500 | Useful if the buffer was not read from the file normally\n\ | |
f5d5eccf RS |
3501 | or if the file itself has been changed for some known benign reason.\n\ |
3502 | An argument specifies the modification time value to use\n\ | |
3503 | \(instead of that of the visited file), in the form of a list\n\ | |
3504 | \(HIGH . LOW) or (HIGH LOW).") | |
3505 | (time_list) | |
3506 | Lisp_Object time_list; | |
570d7624 | 3507 | { |
f5d5eccf RS |
3508 | if (!NILP (time_list)) |
3509 | current_buffer->modtime = cons_to_long (time_list); | |
3510 | else | |
3511 | { | |
3512 | register Lisp_Object filename; | |
3513 | struct stat st; | |
3514 | Lisp_Object handler; | |
570d7624 | 3515 | |
f5d5eccf | 3516 | filename = Fexpand_file_name (current_buffer->filename, Qnil); |
32f4334d | 3517 | |
f5d5eccf RS |
3518 | /* If the file name has special constructs in it, |
3519 | call the corresponding file handler. */ | |
49307295 | 3520 | handler = Ffind_file_name_handler (filename, Qset_visited_file_modtime); |
f5d5eccf | 3521 | if (!NILP (handler)) |
caf3c431 | 3522 | /* The handler can find the file name the same way we did. */ |
76c881b0 | 3523 | return call2 (handler, Qset_visited_file_modtime, Qnil); |
f5d5eccf RS |
3524 | else if (stat (XSTRING (filename)->data, &st) >= 0) |
3525 | current_buffer->modtime = st.st_mtime; | |
3526 | } | |
570d7624 JB |
3527 | |
3528 | return Qnil; | |
3529 | } | |
3530 | \f | |
3531 | Lisp_Object | |
3532 | auto_save_error () | |
3533 | { | |
570d7624 | 3534 | ring_bell (); |
1a04498e | 3535 | message ("Autosaving...error for %s", XSTRING (current_buffer->name)->data); |
de49a6d3 | 3536 | Fsleep_for (make_number (1), Qnil); |
1a04498e | 3537 | message ("Autosaving...error!for %s", XSTRING (current_buffer->name)->data); |
de49a6d3 | 3538 | Fsleep_for (make_number (1), Qnil); |
1a04498e | 3539 | message ("Autosaving...error for %s", XSTRING (current_buffer->name)->data); |
de49a6d3 | 3540 | Fsleep_for (make_number (1), Qnil); |
570d7624 JB |
3541 | return Qnil; |
3542 | } | |
3543 | ||
3544 | Lisp_Object | |
3545 | auto_save_1 () | |
3546 | { | |
3547 | unsigned char *fn; | |
3548 | struct stat st; | |
3549 | ||
3550 | /* Get visited file's mode to become the auto save file's mode. */ | |
3551 | if (stat (XSTRING (current_buffer->filename)->data, &st) >= 0) | |
3552 | /* But make sure we can overwrite it later! */ | |
3553 | auto_save_mode_bits = st.st_mode | 0600; | |
3554 | else | |
3555 | auto_save_mode_bits = 0666; | |
3556 | ||
3557 | return | |
3558 | Fwrite_region (Qnil, Qnil, | |
3559 | current_buffer->auto_save_file_name, | |
3560 | Qnil, Qlambda); | |
3561 | } | |
3562 | ||
e54d3b5d | 3563 | static Lisp_Object |
15fa1468 RS |
3564 | do_auto_save_unwind (desc) /* used as unwind-protect function */ |
3565 | Lisp_Object desc; | |
e54d3b5d | 3566 | { |
15fa1468 | 3567 | close (XINT (desc)); |
e54d3b5d RS |
3568 | return Qnil; |
3569 | } | |
3570 | ||
570d7624 JB |
3571 | DEFUN ("do-auto-save", Fdo_auto_save, Sdo_auto_save, 0, 2, "", |
3572 | "Auto-save all buffers that need it.\n\ | |
3573 | This is all buffers that have auto-saving enabled\n\ | |
3574 | and are changed since last auto-saved.\n\ | |
3575 | Auto-saving writes the buffer into a file\n\ | |
3576 | so that your editing is not lost if the system crashes.\n\ | |
012d4cdc RS |
3577 | This file is not the file you visited; that changes only when you save.\n\ |
3578 | Normally we run the normal hook `auto-save-hook' before saving.\n\n\ | |
570d7624 | 3579 | Non-nil first argument means do not print any message if successful.\n\ |
4746118a | 3580 | Non-nil second argument means save only current buffer.") |
17857782 JB |
3581 | (no_message, current_only) |
3582 | Lisp_Object no_message, current_only; | |
570d7624 JB |
3583 | { |
3584 | struct buffer *old = current_buffer, *b; | |
3585 | Lisp_Object tail, buf; | |
3586 | int auto_saved = 0; | |
3587 | char *omessage = echo_area_glyphs; | |
f05b275b | 3588 | int omessage_length = echo_area_glyphs_length; |
f14b1c68 JB |
3589 | extern int minibuf_level; |
3590 | int do_handled_files; | |
ff4c9993 | 3591 | Lisp_Object oquit; |
e54d3b5d | 3592 | int listdesc; |
e54d3b5d RS |
3593 | int count = specpdl_ptr - specpdl; |
3594 | int *ptr; | |
ff4c9993 RS |
3595 | |
3596 | /* Ordinarily don't quit within this function, | |
3597 | but don't make it impossible to quit (in case we get hung in I/O). */ | |
3598 | oquit = Vquit_flag; | |
3599 | Vquit_flag = Qnil; | |
570d7624 JB |
3600 | |
3601 | /* No GCPRO needed, because (when it matters) all Lisp_Object variables | |
3602 | point to non-strings reached from Vbuffer_alist. */ | |
3603 | ||
3604 | auto_saving = 1; | |
3605 | if (minibuf_level) | |
17857782 | 3606 | no_message = Qt; |
570d7624 | 3607 | |
265a9e55 | 3608 | if (!NILP (Vrun_hooks)) |
570d7624 JB |
3609 | call1 (Vrun_hooks, intern ("auto-save-hook")); |
3610 | ||
e54d3b5d RS |
3611 | if (STRINGP (Vauto_save_list_file_name)) |
3612 | { | |
3613 | #ifdef MSDOS | |
3614 | listdesc = open (XSTRING (Vauto_save_list_file_name)->data, | |
3615 | O_WRONLY | O_TRUNC | O_CREAT | O_TEXT, | |
3616 | S_IREAD | S_IWRITE); | |
3617 | #else /* not MSDOS */ | |
3618 | listdesc = creat (XSTRING (Vauto_save_list_file_name)->data, 0666); | |
3619 | #endif /* not MSDOS */ | |
3620 | } | |
3621 | else | |
3622 | listdesc = -1; | |
e54d3b5d | 3623 | |
15fa1468 RS |
3624 | /* Arrange to close that file whether or not we get an error. */ |
3625 | if (listdesc >= 0) | |
3626 | record_unwind_protect (do_auto_save_unwind, make_number (listdesc)); | |
e54d3b5d | 3627 | |
f14b1c68 JB |
3628 | /* First, save all files which don't have handlers. If Emacs is |
3629 | crashing, the handlers may tweak what is causing Emacs to crash | |
3630 | in the first place, and it would be a shame if Emacs failed to | |
3631 | autosave perfectly ordinary files because it couldn't handle some | |
3632 | ange-ftp'd file. */ | |
3633 | for (do_handled_files = 0; do_handled_files < 2; do_handled_files++) | |
3634 | for (tail = Vbuffer_alist; XGCTYPE (tail) == Lisp_Cons; | |
3635 | tail = XCONS (tail)->cdr) | |
3636 | { | |
3637 | buf = XCONS (XCONS (tail)->car)->cdr; | |
3638 | b = XBUFFER (buf); | |
e54d3b5d RS |
3639 | |
3640 | /* Record all the buffers that have auto save mode | |
3641 | in the special file that lists them. */ | |
3642 | if (XTYPE (b->auto_save_file_name) == Lisp_String | |
3643 | && listdesc >= 0 && do_handled_files == 0) | |
3644 | { | |
3645 | write (listdesc, XSTRING (b->auto_save_file_name)->data, | |
3646 | XSTRING (b->auto_save_file_name)->size); | |
3647 | write (listdesc, "\n", 1); | |
3648 | } | |
17857782 | 3649 | |
f14b1c68 JB |
3650 | if (!NILP (current_only) |
3651 | && b != current_buffer) | |
3652 | continue; | |
e54d3b5d | 3653 | |
f14b1c68 JB |
3654 | /* Check for auto save enabled |
3655 | and file changed since last auto save | |
3656 | and file changed since last real save. */ | |
3657 | if (XTYPE (b->auto_save_file_name) == Lisp_String | |
3658 | && b->save_modified < BUF_MODIFF (b) | |
3659 | && b->auto_save_modified < BUF_MODIFF (b) | |
82c2d839 RS |
3660 | /* -1 means we've turned off autosaving for a while--see below. */ |
3661 | && XINT (b->save_length) >= 0 | |
f14b1c68 | 3662 | && (do_handled_files |
49307295 KH |
3663 | || NILP (Ffind_file_name_handler (b->auto_save_file_name, |
3664 | Qwrite_region)))) | |
f14b1c68 | 3665 | { |
b60247d9 RS |
3666 | EMACS_TIME before_time, after_time; |
3667 | ||
3668 | EMACS_GET_TIME (before_time); | |
3669 | ||
3670 | /* If we had a failure, don't try again for 20 minutes. */ | |
3671 | if (b->auto_save_failure_time >= 0 | |
3672 | && EMACS_SECS (before_time) - b->auto_save_failure_time < 1200) | |
3673 | continue; | |
3674 | ||
f14b1c68 JB |
3675 | if ((XFASTINT (b->save_length) * 10 |
3676 | > (BUF_Z (b) - BUF_BEG (b)) * 13) | |
3677 | /* A short file is likely to change a large fraction; | |
3678 | spare the user annoying messages. */ | |
3679 | && XFASTINT (b->save_length) > 5000 | |
3680 | /* These messages are frequent and annoying for `*mail*'. */ | |
3681 | && !EQ (b->filename, Qnil) | |
3682 | && NILP (no_message)) | |
3683 | { | |
3684 | /* It has shrunk too much; turn off auto-saving here. */ | |
3685 | message ("Buffer %s has shrunk a lot; auto save turned off there", | |
3686 | XSTRING (b->name)->data); | |
82c2d839 RS |
3687 | /* Turn off auto-saving until there's a real save, |
3688 | and prevent any more warnings. */ | |
3689 | XSET (b->save_length, Lisp_Int, -1); | |
f14b1c68 JB |
3690 | Fsleep_for (make_number (1), Qnil); |
3691 | continue; | |
3692 | } | |
3693 | set_buffer_internal (b); | |
3694 | if (!auto_saved && NILP (no_message)) | |
3695 | message1 ("Auto-saving..."); | |
3696 | internal_condition_case (auto_save_1, Qt, auto_save_error); | |
3697 | auto_saved++; | |
3698 | b->auto_save_modified = BUF_MODIFF (b); | |
3699 | XFASTINT (current_buffer->save_length) = Z - BEG; | |
3700 | set_buffer_internal (old); | |
b60247d9 RS |
3701 | |
3702 | EMACS_GET_TIME (after_time); | |
3703 | ||
3704 | /* If auto-save took more than 60 seconds, | |
3705 | assume it was an NFS failure that got a timeout. */ | |
3706 | if (EMACS_SECS (after_time) - EMACS_SECS (before_time) > 60) | |
3707 | b->auto_save_failure_time = EMACS_SECS (after_time); | |
f14b1c68 JB |
3708 | } |
3709 | } | |
570d7624 | 3710 | |
b67f2ca5 RS |
3711 | /* Prevent another auto save till enough input events come in. */ |
3712 | record_auto_save (); | |
570d7624 | 3713 | |
17857782 | 3714 | if (auto_saved && NILP (no_message)) |
f05b275b KH |
3715 | { |
3716 | if (omessage) | |
3717 | message2 (omessage, omessage_length); | |
3718 | else | |
3719 | message1 ("Auto-saving...done"); | |
3720 | } | |
570d7624 | 3721 | |
ff4c9993 RS |
3722 | Vquit_flag = oquit; |
3723 | ||
570d7624 | 3724 | auto_saving = 0; |
e54d3b5d | 3725 | unbind_to (count, Qnil); |
570d7624 JB |
3726 | return Qnil; |
3727 | } | |
3728 | ||
3729 | DEFUN ("set-buffer-auto-saved", Fset_buffer_auto_saved, | |
3730 | Sset_buffer_auto_saved, 0, 0, 0, | |
3731 | "Mark current buffer as auto-saved with its current text.\n\ | |
3732 | No auto-save file will be written until the buffer changes again.") | |
3733 | () | |
3734 | { | |
3735 | current_buffer->auto_save_modified = MODIFF; | |
3736 | XFASTINT (current_buffer->save_length) = Z - BEG; | |
b60247d9 RS |
3737 | current_buffer->auto_save_failure_time = -1; |
3738 | return Qnil; | |
3739 | } | |
3740 | ||
3741 | DEFUN ("clear-buffer-auto-save-failure", Fclear_buffer_auto_save_failure, | |
3742 | Sclear_buffer_auto_save_failure, 0, 0, 0, | |
3743 | "Clear any record of a recent auto-save failure in the current buffer.") | |
3744 | () | |
3745 | { | |
3746 | current_buffer->auto_save_failure_time = -1; | |
570d7624 JB |
3747 | return Qnil; |
3748 | } | |
3749 | ||
3750 | DEFUN ("recent-auto-save-p", Frecent_auto_save_p, Srecent_auto_save_p, | |
3751 | 0, 0, 0, | |
3752 | "Return t if buffer has been auto-saved since last read in or saved.") | |
3753 | () | |
3754 | { | |
3755 | return (current_buffer->save_modified < current_buffer->auto_save_modified) ? Qt : Qnil; | |
3756 | } | |
3757 | \f | |
3758 | /* Reading and completing file names */ | |
3759 | extern Lisp_Object Ffile_name_completion (), Ffile_name_all_completions (); | |
3760 | ||
6e710ae5 RS |
3761 | /* In the string VAL, change each $ to $$ and return the result. */ |
3762 | ||
3763 | static Lisp_Object | |
3764 | double_dollars (val) | |
3765 | Lisp_Object val; | |
3766 | { | |
3767 | register unsigned char *old, *new; | |
3768 | register int n; | |
3769 | int osize, count; | |
3770 | ||
3771 | osize = XSTRING (val)->size; | |
3772 | /* Quote "$" as "$$" to get it past substitute-in-file-name */ | |
3773 | for (n = osize, count = 0, old = XSTRING (val)->data; n > 0; n--) | |
3774 | if (*old++ == '$') count++; | |
3775 | if (count > 0) | |
3776 | { | |
3777 | old = XSTRING (val)->data; | |
3778 | val = Fmake_string (make_number (osize + count), make_number (0)); | |
3779 | new = XSTRING (val)->data; | |
3780 | for (n = osize; n > 0; n--) | |
3781 | if (*old != '$') | |
3782 | *new++ = *old++; | |
3783 | else | |
3784 | { | |
3785 | *new++ = '$'; | |
3786 | *new++ = '$'; | |
3787 | old++; | |
3788 | } | |
3789 | } | |
3790 | return val; | |
3791 | } | |
3792 | ||
570d7624 JB |
3793 | DEFUN ("read-file-name-internal", Fread_file_name_internal, Sread_file_name_internal, |
3794 | 3, 3, 0, | |
3795 | "Internal subroutine for read-file-name. Do not call this.") | |
3796 | (string, dir, action) | |
3797 | Lisp_Object string, dir, action; | |
3798 | /* action is nil for complete, t for return list of completions, | |
3799 | lambda for verify final value */ | |
3800 | { | |
3801 | Lisp_Object name, specdir, realdir, val, orig_string; | |
09121adc RS |
3802 | int changed; |
3803 | struct gcpro gcpro1, gcpro2, gcpro3, gcpro4; | |
3804 | ||
3805 | realdir = dir; | |
3806 | name = string; | |
3807 | orig_string = Qnil; | |
3808 | specdir = Qnil; | |
3809 | changed = 0; | |
3810 | /* No need to protect ACTION--we only compare it with t and nil. */ | |
3811 | GCPRO4 (string, realdir, name, specdir); | |
570d7624 JB |
3812 | |
3813 | if (XSTRING (string)->size == 0) | |
3814 | { | |
570d7624 | 3815 | if (EQ (action, Qlambda)) |
09121adc RS |
3816 | { |
3817 | UNGCPRO; | |
3818 | return Qnil; | |
3819 | } | |
570d7624 JB |
3820 | } |
3821 | else | |
3822 | { | |
3823 | orig_string = string; | |
3824 | string = Fsubstitute_in_file_name (string); | |
09121adc | 3825 | changed = NILP (Fstring_equal (string, orig_string)); |
570d7624 | 3826 | name = Ffile_name_nondirectory (string); |
09121adc RS |
3827 | val = Ffile_name_directory (string); |
3828 | if (! NILP (val)) | |
3829 | realdir = Fexpand_file_name (val, realdir); | |
570d7624 JB |
3830 | } |
3831 | ||
265a9e55 | 3832 | if (NILP (action)) |
570d7624 JB |
3833 | { |
3834 | specdir = Ffile_name_directory (string); | |
3835 | val = Ffile_name_completion (name, realdir); | |
09121adc | 3836 | UNGCPRO; |
570d7624 JB |
3837 | if (XTYPE (val) != Lisp_String) |
3838 | { | |
09121adc | 3839 | if (changed) |
dbd04e01 | 3840 | return double_dollars (string); |
09121adc | 3841 | return val; |
570d7624 JB |
3842 | } |
3843 | ||
265a9e55 | 3844 | if (!NILP (specdir)) |
570d7624 JB |
3845 | val = concat2 (specdir, val); |
3846 | #ifndef VMS | |
6e710ae5 RS |
3847 | return double_dollars (val); |
3848 | #else /* not VMS */ | |
09121adc | 3849 | return val; |
6e710ae5 | 3850 | #endif /* not VMS */ |
570d7624 | 3851 | } |
09121adc | 3852 | UNGCPRO; |
570d7624 JB |
3853 | |
3854 | if (EQ (action, Qt)) | |
3855 | return Ffile_name_all_completions (name, realdir); | |
3856 | /* Only other case actually used is ACTION = lambda */ | |
3857 | #ifdef VMS | |
3858 | /* Supposedly this helps commands such as `cd' that read directory names, | |
3859 | but can someone explain how it helps them? -- RMS */ | |
3860 | if (XSTRING (name)->size == 0) | |
3861 | return Qt; | |
3862 | #endif /* VMS */ | |
3863 | return Ffile_exists_p (string); | |
3864 | } | |
3865 | ||
3866 | DEFUN ("read-file-name", Fread_file_name, Sread_file_name, 1, 5, 0, | |
3867 | "Read file name, prompting with PROMPT and completing in directory DIR.\n\ | |
3868 | Value is not expanded---you must call `expand-file-name' yourself.\n\ | |
3869 | Default name to DEFAULT if user enters a null string.\n\ | |
3870 | (If DEFAULT is omitted, the visited file name is used.)\n\ | |
3871 | Fourth arg MUSTMATCH non-nil means require existing file's name.\n\ | |
3872 | Non-nil and non-t means also require confirmation after completion.\n\ | |
3873 | Fifth arg INITIAL specifies text to start with.\n\ | |
3874 | DIR defaults to current buffer's directory default.") | |
3875 | (prompt, dir, defalt, mustmatch, initial) | |
3876 | Lisp_Object prompt, dir, defalt, mustmatch, initial; | |
3877 | { | |
85b5fe07 | 3878 | Lisp_Object val, insdef, insdef1, tem; |
570d7624 JB |
3879 | struct gcpro gcpro1, gcpro2; |
3880 | register char *homedir; | |
3881 | int count; | |
3882 | ||
265a9e55 | 3883 | if (NILP (dir)) |
570d7624 | 3884 | dir = current_buffer->directory; |
265a9e55 | 3885 | if (NILP (defalt)) |
570d7624 JB |
3886 | defalt = current_buffer->filename; |
3887 | ||
3888 | /* If dir starts with user's homedir, change that to ~. */ | |
3889 | homedir = (char *) egetenv ("HOME"); | |
3890 | if (homedir != 0 | |
3891 | && XTYPE (dir) == Lisp_String | |
3892 | && !strncmp (homedir, XSTRING (dir)->data, strlen (homedir)) | |
3893 | && XSTRING (dir)->data[strlen (homedir)] == '/') | |
3894 | { | |
3895 | dir = make_string (XSTRING (dir)->data + strlen (homedir) - 1, | |
3896 | XSTRING (dir)->size - strlen (homedir) + 1); | |
3897 | XSTRING (dir)->data[0] = '~'; | |
3898 | } | |
3899 | ||
3900 | if (insert_default_directory) | |
3901 | { | |
3902 | insdef = dir; | |
265a9e55 | 3903 | if (!NILP (initial)) |
570d7624 | 3904 | { |
15c65264 | 3905 | Lisp_Object args[2], pos; |
570d7624 JB |
3906 | |
3907 | args[0] = insdef; | |
3908 | args[1] = initial; | |
3909 | insdef = Fconcat (2, args); | |
351bd676 | 3910 | pos = make_number (XSTRING (double_dollars (dir))->size); |
6e710ae5 | 3911 | insdef1 = Fcons (double_dollars (insdef), pos); |
570d7624 | 3912 | } |
6e710ae5 RS |
3913 | else |
3914 | insdef1 = double_dollars (insdef); | |
570d7624 | 3915 | } |
351bd676 KH |
3916 | else if (!NILP (initial)) |
3917 | { | |
3918 | insdef = initial; | |
3919 | insdef1 = Fcons (double_dollars (insdef), 0); | |
3920 | } | |
570d7624 | 3921 | else |
85b5fe07 | 3922 | insdef = Qnil, insdef1 = Qnil; |
570d7624 JB |
3923 | |
3924 | #ifdef VMS | |
3925 | count = specpdl_ptr - specpdl; | |
3926 | specbind (intern ("completion-ignore-case"), Qt); | |
3927 | #endif | |
3928 | ||
3929 | GCPRO2 (insdef, defalt); | |
3930 | val = Fcompleting_read (prompt, intern ("read-file-name-internal"), | |
85b5fe07 | 3931 | dir, mustmatch, insdef1, |
15c65264 | 3932 | Qfile_name_history); |
570d7624 JB |
3933 | |
3934 | #ifdef VMS | |
3935 | unbind_to (count, Qnil); | |
3936 | #endif | |
3937 | ||
3938 | UNGCPRO; | |
265a9e55 | 3939 | if (NILP (val)) |
570d7624 JB |
3940 | error ("No file name specified"); |
3941 | tem = Fstring_equal (val, insdef); | |
265a9e55 | 3942 | if (!NILP (tem) && !NILP (defalt)) |
570d7624 | 3943 | return defalt; |
b320926a | 3944 | if (XSTRING (val)->size == 0 && NILP (insdef)) |
d9bc1c99 RS |
3945 | { |
3946 | if (!NILP (defalt)) | |
3947 | return defalt; | |
3948 | else | |
3949 | error ("No default file name"); | |
3950 | } | |
570d7624 JB |
3951 | return Fsubstitute_in_file_name (val); |
3952 | } | |
3953 | ||
3954 | #if 0 /* Old version */ | |
3955 | DEFUN ("read-file-name", Fread_file_name, Sread_file_name, 1, 5, 0, | |
0de25302 KH |
3956 | /* Don't confuse make-docfile by having two doc strings for this function. |
3957 | make-docfile does not pay attention to #if, for good reason! */ | |
3958 | 0) | |
570d7624 JB |
3959 | (prompt, dir, defalt, mustmatch, initial) |
3960 | Lisp_Object prompt, dir, defalt, mustmatch, initial; | |
3961 | { | |
3962 | Lisp_Object val, insdef, tem; | |
3963 | struct gcpro gcpro1, gcpro2; | |
3964 | register char *homedir; | |
3965 | int count; | |
3966 | ||
265a9e55 | 3967 | if (NILP (dir)) |
570d7624 | 3968 | dir = current_buffer->directory; |
265a9e55 | 3969 | if (NILP (defalt)) |
570d7624 JB |
3970 | defalt = current_buffer->filename; |
3971 | ||
3972 | /* If dir starts with user's homedir, change that to ~. */ | |
3973 | homedir = (char *) egetenv ("HOME"); | |
3974 | if (homedir != 0 | |
3975 | && XTYPE (dir) == Lisp_String | |
3976 | && !strncmp (homedir, XSTRING (dir)->data, strlen (homedir)) | |
3977 | && XSTRING (dir)->data[strlen (homedir)] == '/') | |
3978 | { | |
3979 | dir = make_string (XSTRING (dir)->data + strlen (homedir) - 1, | |
3980 | XSTRING (dir)->size - strlen (homedir) + 1); | |
3981 | XSTRING (dir)->data[0] = '~'; | |
3982 | } | |
3983 | ||
265a9e55 | 3984 | if (!NILP (initial)) |
570d7624 JB |
3985 | insdef = initial; |
3986 | else if (insert_default_directory) | |
3987 | insdef = dir; | |
3988 | else | |
3989 | insdef = build_string (""); | |
3990 | ||
3991 | #ifdef VMS | |
3992 | count = specpdl_ptr - specpdl; | |
3993 | specbind (intern ("completion-ignore-case"), Qt); | |
3994 | #endif | |
3995 | ||
3996 | GCPRO2 (insdef, defalt); | |
3997 | val = Fcompleting_read (prompt, intern ("read-file-name-internal"), | |
3998 | dir, mustmatch, | |
15c65264 RS |
3999 | insert_default_directory ? insdef : Qnil, |
4000 | Qfile_name_history); | |
570d7624 JB |
4001 | |
4002 | #ifdef VMS | |
4003 | unbind_to (count, Qnil); | |
4004 | #endif | |
4005 | ||
4006 | UNGCPRO; | |
265a9e55 | 4007 | if (NILP (val)) |
570d7624 JB |
4008 | error ("No file name specified"); |
4009 | tem = Fstring_equal (val, insdef); | |
265a9e55 | 4010 | if (!NILP (tem) && !NILP (defalt)) |
570d7624 JB |
4011 | return defalt; |
4012 | return Fsubstitute_in_file_name (val); | |
4013 | } | |
4014 | #endif /* Old version */ | |
4015 | \f | |
4016 | syms_of_fileio () | |
4017 | { | |
0bf2eed2 RS |
4018 | Qexpand_file_name = intern ("expand-file-name"); |
4019 | Qdirectory_file_name = intern ("directory-file-name"); | |
4020 | Qfile_name_directory = intern ("file-name-directory"); | |
4021 | Qfile_name_nondirectory = intern ("file-name-nondirectory"); | |
642ef245 | 4022 | Qunhandled_file_name_directory = intern ("unhandled-file-name-directory"); |
0bf2eed2 | 4023 | Qfile_name_as_directory = intern ("file-name-as-directory"); |
32f4334d | 4024 | Qcopy_file = intern ("copy-file"); |
a6e6e718 | 4025 | Qmake_directory_internal = intern ("make-directory-internal"); |
32f4334d RS |
4026 | Qdelete_directory = intern ("delete-directory"); |
4027 | Qdelete_file = intern ("delete-file"); | |
4028 | Qrename_file = intern ("rename-file"); | |
4029 | Qadd_name_to_file = intern ("add-name-to-file"); | |
4030 | Qmake_symbolic_link = intern ("make-symbolic-link"); | |
4031 | Qfile_exists_p = intern ("file-exists-p"); | |
4032 | Qfile_executable_p = intern ("file-executable-p"); | |
4033 | Qfile_readable_p = intern ("file-readable-p"); | |
4034 | Qfile_symlink_p = intern ("file-symlink-p"); | |
4035 | Qfile_writable_p = intern ("file-writable-p"); | |
4036 | Qfile_directory_p = intern ("file-directory-p"); | |
4037 | Qfile_accessible_directory_p = intern ("file-accessible-directory-p"); | |
4038 | Qfile_modes = intern ("file-modes"); | |
4039 | Qset_file_modes = intern ("set-file-modes"); | |
4040 | Qfile_newer_than_file_p = intern ("file-newer-than-file-p"); | |
4041 | Qinsert_file_contents = intern ("insert-file-contents"); | |
4042 | Qwrite_region = intern ("write-region"); | |
4043 | Qverify_visited_file_modtime = intern ("verify-visited-file-modtime"); | |
3ec46acd | 4044 | Qset_visited_file_modtime = intern ("set-visited-file-modtime"); |
32f4334d | 4045 | |
642ef245 JB |
4046 | staticpro (&Qexpand_file_name); |
4047 | staticpro (&Qdirectory_file_name); | |
4048 | staticpro (&Qfile_name_directory); | |
4049 | staticpro (&Qfile_name_nondirectory); | |
4050 | staticpro (&Qunhandled_file_name_directory); | |
4051 | staticpro (&Qfile_name_as_directory); | |
15c65264 | 4052 | staticpro (&Qcopy_file); |
c34b559d | 4053 | staticpro (&Qmake_directory_internal); |
15c65264 RS |
4054 | staticpro (&Qdelete_directory); |
4055 | staticpro (&Qdelete_file); | |
4056 | staticpro (&Qrename_file); | |
4057 | staticpro (&Qadd_name_to_file); | |
4058 | staticpro (&Qmake_symbolic_link); | |
4059 | staticpro (&Qfile_exists_p); | |
4060 | staticpro (&Qfile_executable_p); | |
4061 | staticpro (&Qfile_readable_p); | |
4062 | staticpro (&Qfile_symlink_p); | |
4063 | staticpro (&Qfile_writable_p); | |
4064 | staticpro (&Qfile_directory_p); | |
4065 | staticpro (&Qfile_accessible_directory_p); | |
4066 | staticpro (&Qfile_modes); | |
4067 | staticpro (&Qset_file_modes); | |
4068 | staticpro (&Qfile_newer_than_file_p); | |
4069 | staticpro (&Qinsert_file_contents); | |
4070 | staticpro (&Qwrite_region); | |
4071 | staticpro (&Qverify_visited_file_modtime); | |
642ef245 JB |
4072 | |
4073 | Qfile_name_history = intern ("file-name-history"); | |
4074 | Fset (Qfile_name_history, Qnil); | |
15c65264 RS |
4075 | staticpro (&Qfile_name_history); |
4076 | ||
570d7624 JB |
4077 | Qfile_error = intern ("file-error"); |
4078 | staticpro (&Qfile_error); | |
4079 | Qfile_already_exists = intern("file-already-exists"); | |
4080 | staticpro (&Qfile_already_exists); | |
4081 | ||
4c3c22f3 RS |
4082 | #ifdef MSDOS |
4083 | Qfind_buffer_file_type = intern ("find-buffer-file-type"); | |
4084 | staticpro (&Qfind_buffer_file_type); | |
4085 | #endif | |
4086 | ||
d6a3cc15 RS |
4087 | Qcar_less_than_car = intern ("car-less-than-car"); |
4088 | staticpro (&Qcar_less_than_car); | |
4089 | ||
570d7624 JB |
4090 | Fput (Qfile_error, Qerror_conditions, |
4091 | Fcons (Qfile_error, Fcons (Qerror, Qnil))); | |
4092 | Fput (Qfile_error, Qerror_message, | |
4093 | build_string ("File error")); | |
4094 | ||
4095 | Fput (Qfile_already_exists, Qerror_conditions, | |
4096 | Fcons (Qfile_already_exists, | |
4097 | Fcons (Qfile_error, Fcons (Qerror, Qnil)))); | |
4098 | Fput (Qfile_already_exists, Qerror_message, | |
4099 | build_string ("File already exists")); | |
4100 | ||
4101 | DEFVAR_BOOL ("insert-default-directory", &insert_default_directory, | |
4102 | "*Non-nil means when reading a filename start with default dir in minibuffer."); | |
4103 | insert_default_directory = 1; | |
4104 | ||
4105 | DEFVAR_BOOL ("vms-stmlf-recfm", &vms_stmlf_recfm, | |
4106 | "*Non-nil means write new files with record format `stmlf'.\n\ | |
4107 | nil means use format `var'. This variable is meaningful only on VMS."); | |
4108 | vms_stmlf_recfm = 0; | |
4109 | ||
1d1826db RS |
4110 | DEFVAR_LISP ("file-name-handler-alist", &Vfile_name_handler_alist, |
4111 | "*Alist of elements (REGEXP . HANDLER) for file names handled specially.\n\ | |
4112 | If a file name matches REGEXP, then all I/O on that file is done by calling\n\ | |
4113 | HANDLER.\n\ | |
4114 | \n\ | |
4115 | The first argument given to HANDLER is the name of the I/O primitive\n\ | |
4116 | to be handled; the remaining arguments are the arguments that were\n\ | |
4117 | passed to that primitive. For example, if you do\n\ | |
4118 | (file-exists-p FILENAME)\n\ | |
4119 | and FILENAME is handled by HANDLER, then HANDLER is called like this:\n\ | |
642ef245 JB |
4120 | (funcall HANDLER 'file-exists-p FILENAME)\n\ |
4121 | The function `find-file-name-handler' checks this list for a handler\n\ | |
4122 | for its argument."); | |
09121adc RS |
4123 | Vfile_name_handler_alist = Qnil; |
4124 | ||
d6a3cc15 | 4125 | DEFVAR_LISP ("after-insert-file-functions", &Vafter_insert_file_functions, |
246cfea5 RS |
4126 | "A list of functions to be called at the end of `insert-file-contents'.\n\ |
4127 | Each is passed one argument, the number of bytes inserted. It should return\n\ | |
4128 | the new byte count, and leave point the same. If `insert-file-contents' is\n\ | |
4129 | intercepted by a handler from `file-name-handler-alist', that handler is\n\ | |
d6a3cc15 RS |
4130 | responsible for calling the after-insert-file-functions if appropriate."); |
4131 | Vafter_insert_file_functions = Qnil; | |
4132 | ||
4133 | DEFVAR_LISP ("write-region-annotate-functions", &Vwrite_region_annotate_functions, | |
246cfea5 RS |
4134 | "A list of functions to be called at the start of `write-region'.\n\ |
4135 | Each is passed two arguments, START and END as for `write-region'. It should\n\ | |
4136 | return a list of pairs (POSITION . STRING) of strings to be effectively\n\ | |
4137 | inserted at the specified positions of the file being written (1 means to\n\ | |
4138 | insert before the first byte written). The POSITIONs must be sorted into\n\ | |
4139 | increasing order. If there are several functions in the list, the several\n\ | |
d6a3cc15 RS |
4140 | lists are merged destructively."); |
4141 | Vwrite_region_annotate_functions = Qnil; | |
4142 | ||
6fc6f94b RS |
4143 | DEFVAR_LISP ("write-region-annotations-so-far", |
4144 | &Vwrite_region_annotations_so_far, | |
4145 | "When an annotation function is called, this holds the previous annotations.\n\ | |
4146 | These are the annotations made by other annotation functions\n\ | |
4147 | that were already called. See also `write-region-annotate-functions'."); | |
4148 | Vwrite_region_annotations_so_far = Qnil; | |
4149 | ||
82c2d839 | 4150 | DEFVAR_LISP ("inhibit-file-name-handlers", &Vinhibit_file_name_handlers, |
268466ed | 4151 | "A list of file name handlers that temporarily should not be used.\n\ |
e3e86241 | 4152 | This applies only to the operation `inhibit-file-name-operation'."); |
82c2d839 RS |
4153 | Vinhibit_file_name_handlers = Qnil; |
4154 | ||
a65970a0 RS |
4155 | DEFVAR_LISP ("inhibit-file-name-operation", &Vinhibit_file_name_operation, |
4156 | "The operation for which `inhibit-file-name-handlers' is applicable."); | |
4157 | Vinhibit_file_name_operation = Qnil; | |
4158 | ||
e54d3b5d RS |
4159 | DEFVAR_LISP ("auto-save-list-file-name", &Vauto_save_list_file_name, |
4160 | "File name in which we write a list of all auto save file names."); | |
4161 | Vauto_save_list_file_name = Qnil; | |
4162 | ||
642ef245 | 4163 | defsubr (&Sfind_file_name_handler); |
570d7624 JB |
4164 | defsubr (&Sfile_name_directory); |
4165 | defsubr (&Sfile_name_nondirectory); | |
642ef245 | 4166 | defsubr (&Sunhandled_file_name_directory); |
570d7624 JB |
4167 | defsubr (&Sfile_name_as_directory); |
4168 | defsubr (&Sdirectory_file_name); | |
4169 | defsubr (&Smake_temp_name); | |
4170 | defsubr (&Sexpand_file_name); | |
4171 | defsubr (&Ssubstitute_in_file_name); | |
4172 | defsubr (&Scopy_file); | |
9bbe01fb | 4173 | defsubr (&Smake_directory_internal); |
aa734e17 | 4174 | defsubr (&Sdelete_directory); |
570d7624 JB |
4175 | defsubr (&Sdelete_file); |
4176 | defsubr (&Srename_file); | |
4177 | defsubr (&Sadd_name_to_file); | |
4178 | #ifdef S_IFLNK | |
4179 | defsubr (&Smake_symbolic_link); | |
4180 | #endif /* S_IFLNK */ | |
4181 | #ifdef VMS | |
4182 | defsubr (&Sdefine_logical_name); | |
4183 | #endif /* VMS */ | |
4184 | #ifdef HPUX_NET | |
4185 | defsubr (&Ssysnetunam); | |
4186 | #endif /* HPUX_NET */ | |
4187 | defsubr (&Sfile_name_absolute_p); | |
4188 | defsubr (&Sfile_exists_p); | |
4189 | defsubr (&Sfile_executable_p); | |
4190 | defsubr (&Sfile_readable_p); | |
4191 | defsubr (&Sfile_writable_p); | |
4192 | defsubr (&Sfile_symlink_p); | |
4193 | defsubr (&Sfile_directory_p); | |
b72dea2a | 4194 | defsubr (&Sfile_accessible_directory_p); |
570d7624 JB |
4195 | defsubr (&Sfile_modes); |
4196 | defsubr (&Sset_file_modes); | |
c24e9a53 RS |
4197 | defsubr (&Sset_default_file_modes); |
4198 | defsubr (&Sdefault_file_modes); | |
570d7624 JB |
4199 | defsubr (&Sfile_newer_than_file_p); |
4200 | defsubr (&Sinsert_file_contents); | |
4201 | defsubr (&Swrite_region); | |
d6a3cc15 | 4202 | defsubr (&Scar_less_than_car); |
570d7624 JB |
4203 | defsubr (&Sverify_visited_file_modtime); |
4204 | defsubr (&Sclear_visited_file_modtime); | |
f5d5eccf | 4205 | defsubr (&Svisited_file_modtime); |
570d7624 JB |
4206 | defsubr (&Sset_visited_file_modtime); |
4207 | defsubr (&Sdo_auto_save); | |
4208 | defsubr (&Sset_buffer_auto_saved); | |
b60247d9 | 4209 | defsubr (&Sclear_buffer_auto_save_failure); |
570d7624 JB |
4210 | defsubr (&Srecent_auto_save_p); |
4211 | ||
4212 | defsubr (&Sread_file_name_internal); | |
4213 | defsubr (&Sread_file_name); | |
85ffea93 | 4214 | |
483a2e10 | 4215 | #ifdef unix |
85ffea93 | 4216 | defsubr (&Sunix_sync); |
483a2e10 | 4217 | #endif |
570d7624 | 4218 | } |