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 | |
1b50b4f2 KH |
153 | extern Lisp_Object Qcompletion_ignored_extensions; |
154 | ||
570d7624 JB |
155 | Lisp_Object Qfile_error, Qfile_already_exists; |
156 | ||
15c65264 RS |
157 | Lisp_Object Qfile_name_history; |
158 | ||
d6a3cc15 RS |
159 | Lisp_Object Qcar_less_than_car; |
160 | ||
570d7624 JB |
161 | report_file_error (string, data) |
162 | char *string; | |
163 | Lisp_Object data; | |
164 | { | |
165 | Lisp_Object errstring; | |
166 | ||
a1f17b2d | 167 | errstring = build_string (strerror (errno)); |
570d7624 JB |
168 | |
169 | /* System error messages are capitalized. Downcase the initial | |
170 | unless it is followed by a slash. */ | |
171 | if (XSTRING (errstring)->data[1] != '/') | |
172 | XSTRING (errstring)->data[0] = DOWNCASE (XSTRING (errstring)->data[0]); | |
173 | ||
174 | while (1) | |
175 | Fsignal (Qfile_error, | |
176 | Fcons (build_string (string), Fcons (errstring, data))); | |
177 | } | |
b5148e85 RS |
178 | |
179 | close_file_unwind (fd) | |
180 | Lisp_Object fd; | |
181 | { | |
182 | close (XFASTINT (fd)); | |
183 | } | |
a1d2b64a RS |
184 | |
185 | /* Restore point, having saved it as a marker. */ | |
186 | ||
187 | restore_point_unwind (location) | |
188 | Lisp_Object location; | |
189 | { | |
190 | SET_PT (marker_position (location)); | |
191 | Fset_marker (location, Qnil, Qnil); | |
192 | } | |
570d7624 | 193 | \f |
0bf2eed2 RS |
194 | Lisp_Object Qexpand_file_name; |
195 | Lisp_Object Qdirectory_file_name; | |
196 | Lisp_Object Qfile_name_directory; | |
197 | Lisp_Object Qfile_name_nondirectory; | |
642ef245 | 198 | Lisp_Object Qunhandled_file_name_directory; |
0bf2eed2 | 199 | Lisp_Object Qfile_name_as_directory; |
32f4334d | 200 | Lisp_Object Qcopy_file; |
a6e6e718 | 201 | Lisp_Object Qmake_directory_internal; |
32f4334d RS |
202 | Lisp_Object Qdelete_directory; |
203 | Lisp_Object Qdelete_file; | |
204 | Lisp_Object Qrename_file; | |
205 | Lisp_Object Qadd_name_to_file; | |
206 | Lisp_Object Qmake_symbolic_link; | |
207 | Lisp_Object Qfile_exists_p; | |
208 | Lisp_Object Qfile_executable_p; | |
209 | Lisp_Object Qfile_readable_p; | |
210 | Lisp_Object Qfile_symlink_p; | |
211 | Lisp_Object Qfile_writable_p; | |
212 | Lisp_Object Qfile_directory_p; | |
213 | Lisp_Object Qfile_accessible_directory_p; | |
214 | Lisp_Object Qfile_modes; | |
215 | Lisp_Object Qset_file_modes; | |
216 | Lisp_Object Qfile_newer_than_file_p; | |
217 | Lisp_Object Qinsert_file_contents; | |
218 | Lisp_Object Qwrite_region; | |
219 | Lisp_Object Qverify_visited_file_modtime; | |
3ec46acd | 220 | Lisp_Object Qset_visited_file_modtime; |
32f4334d | 221 | |
49307295 KH |
222 | DEFUN ("find-file-name-handler", Ffind_file_name_handler, Sfind_file_name_handler, 2, 2, 0, |
223 | "Return FILENAME's handler function for OPERATION, if it has one.\n\ | |
642ef245 JB |
224 | Otherwise, return nil.\n\ |
225 | A file name is handled if one of the regular expressions in\n\ | |
82c2d839 | 226 | `file-name-handler-alist' matches it.\n\n\ |
a65970a0 RS |
227 | If OPERATION equals `inhibit-file-name-operation', then we ignore\n\ |
228 | any handlers that are members of `inhibit-file-name-handlers',\n\ | |
229 | but we still do run any other handlers. This lets handlers\n\ | |
82c2d839 | 230 | use the standard functions without calling themselves recursively.") |
49307295 KH |
231 | (filename, operation) |
232 | Lisp_Object filename, operation; | |
32f4334d | 233 | { |
642ef245 | 234 | /* This function must not munge the match data. */ |
a65970a0 | 235 | Lisp_Object chain, inhibited_handlers; |
642ef245 | 236 | |
e4432095 JB |
237 | CHECK_STRING (filename, 0); |
238 | ||
a65970a0 RS |
239 | if (EQ (operation, Vinhibit_file_name_operation)) |
240 | inhibited_handlers = Vinhibit_file_name_handlers; | |
241 | else | |
242 | inhibited_handlers = Qnil; | |
82c2d839 | 243 | |
3eac9910 | 244 | for (chain = Vfile_name_handler_alist; XTYPE (chain) == Lisp_Cons; |
32f4334d RS |
245 | chain = XCONS (chain)->cdr) |
246 | { | |
247 | Lisp_Object elt; | |
248 | elt = XCONS (chain)->car; | |
249 | if (XTYPE (elt) == Lisp_Cons) | |
250 | { | |
251 | Lisp_Object string; | |
252 | string = XCONS (elt)->car; | |
253 | if (XTYPE (string) == Lisp_String | |
09121adc | 254 | && fast_string_match (string, filename) >= 0) |
a65970a0 RS |
255 | { |
256 | Lisp_Object handler, tem; | |
257 | ||
258 | handler = XCONS (elt)->cdr; | |
259 | tem = Fmemq (handler, inhibited_handlers); | |
260 | if (NILP (tem)) | |
261 | return handler; | |
262 | } | |
32f4334d | 263 | } |
642ef245 JB |
264 | |
265 | QUIT; | |
32f4334d RS |
266 | } |
267 | return Qnil; | |
268 | } | |
269 | \f | |
570d7624 JB |
270 | DEFUN ("file-name-directory", Ffile_name_directory, Sfile_name_directory, |
271 | 1, 1, 0, | |
272 | "Return the directory component in file name NAME.\n\ | |
273 | Return nil if NAME does not include a directory.\n\ | |
274 | Otherwise return a directory spec.\n\ | |
275 | Given a Unix syntax file name, returns a string ending in slash;\n\ | |
276 | on VMS, perhaps instead a string ending in `:', `]' or `>'.") | |
277 | (file) | |
278 | Lisp_Object file; | |
279 | { | |
280 | register unsigned char *beg; | |
281 | register unsigned char *p; | |
0bf2eed2 | 282 | Lisp_Object handler; |
570d7624 JB |
283 | |
284 | CHECK_STRING (file, 0); | |
285 | ||
0bf2eed2 RS |
286 | /* If the file name has special constructs in it, |
287 | call the corresponding file handler. */ | |
49307295 | 288 | handler = Ffind_file_name_handler (file, Qfile_name_directory); |
0bf2eed2 RS |
289 | if (!NILP (handler)) |
290 | return call2 (handler, Qfile_name_directory, file); | |
291 | ||
4c3c22f3 RS |
292 | #ifdef FILE_SYSTEM_CASE |
293 | file = FILE_SYSTEM_CASE (file); | |
294 | #endif | |
570d7624 JB |
295 | beg = XSTRING (file)->data; |
296 | p = beg + XSTRING (file)->size; | |
297 | ||
298 | while (p != beg && p[-1] != '/' | |
299 | #ifdef VMS | |
300 | && p[-1] != ':' && p[-1] != ']' && p[-1] != '>' | |
301 | #endif /* VMS */ | |
4c3c22f3 | 302 | #ifdef MSDOS |
a5a1cc06 | 303 | && p[-1] != ':' && p[-1] != '\\' |
4c3c22f3 | 304 | #endif |
570d7624 JB |
305 | ) p--; |
306 | ||
307 | if (p == beg) | |
308 | return Qnil; | |
4c3c22f3 RS |
309 | #ifdef MSDOS |
310 | /* Expansion of "c:" to drive and default directory. */ | |
311 | if (p == beg + 2 && beg[1] == ':') | |
312 | { | |
313 | int drive = (*beg) - 'a'; | |
314 | /* MAXPATHLEN+1 is guaranteed to be enough space for getdefdir. */ | |
315 | unsigned char *res = alloca (MAXPATHLEN + 5); | |
316 | if (getdefdir (drive + 1, res + 2)) | |
317 | { | |
318 | res[0] = drive + 'a'; | |
319 | res[1] = ':'; | |
320 | if (res[strlen (res) - 1] != '/') | |
321 | strcat (res, "/"); | |
322 | beg = res; | |
323 | p = beg + strlen (beg); | |
324 | } | |
325 | } | |
326 | #endif | |
570d7624 JB |
327 | return make_string (beg, p - beg); |
328 | } | |
329 | ||
330 | DEFUN ("file-name-nondirectory", Ffile_name_nondirectory, Sfile_name_nondirectory, | |
331 | 1, 1, 0, | |
332 | "Return file name NAME sans its directory.\n\ | |
333 | For example, in a Unix-syntax file name,\n\ | |
334 | this is everything after the last slash,\n\ | |
335 | or the entire name if it contains no slash.") | |
336 | (file) | |
337 | Lisp_Object file; | |
338 | { | |
339 | register unsigned char *beg, *p, *end; | |
0bf2eed2 | 340 | Lisp_Object handler; |
570d7624 JB |
341 | |
342 | CHECK_STRING (file, 0); | |
343 | ||
0bf2eed2 RS |
344 | /* If the file name has special constructs in it, |
345 | call the corresponding file handler. */ | |
49307295 | 346 | handler = Ffind_file_name_handler (file, Qfile_name_nondirectory); |
0bf2eed2 RS |
347 | if (!NILP (handler)) |
348 | return call2 (handler, Qfile_name_nondirectory, file); | |
349 | ||
570d7624 JB |
350 | beg = XSTRING (file)->data; |
351 | end = p = beg + XSTRING (file)->size; | |
352 | ||
353 | while (p != beg && p[-1] != '/' | |
354 | #ifdef VMS | |
355 | && p[-1] != ':' && p[-1] != ']' && p[-1] != '>' | |
356 | #endif /* VMS */ | |
4c3c22f3 | 357 | #ifdef MSDOS |
a5a1cc06 | 358 | && p[-1] != ':' && p[-1] != '\\' |
4c3c22f3 | 359 | #endif |
570d7624 JB |
360 | ) p--; |
361 | ||
362 | return make_string (p, end - p); | |
363 | } | |
642ef245 JB |
364 | |
365 | DEFUN ("unhandled-file-name-directory", Funhandled_file_name_directory, Sunhandled_file_name_directory, 1, 1, 0, | |
366 | "Return a directly usable directory name somehow associated with FILENAME.\n\ | |
367 | A `directly usable' directory name is one that may be used without the\n\ | |
368 | intervention of any file handler.\n\ | |
369 | If FILENAME is a directly usable file itself, return\n\ | |
370 | (file-name-directory FILENAME).\n\ | |
371 | The `call-process' and `start-process' functions use this function to\n\ | |
372 | get a current directory to run processes in.") | |
373 | (filename) | |
374 | Lisp_Object filename; | |
375 | { | |
376 | Lisp_Object handler; | |
377 | ||
378 | /* If the file name has special constructs in it, | |
379 | call the corresponding file handler. */ | |
49307295 | 380 | handler = Ffind_file_name_handler (filename, Qunhandled_file_name_directory); |
642ef245 JB |
381 | if (!NILP (handler)) |
382 | return call2 (handler, Qunhandled_file_name_directory, filename); | |
383 | ||
384 | return Ffile_name_directory (filename); | |
385 | } | |
386 | ||
570d7624 JB |
387 | \f |
388 | char * | |
389 | file_name_as_directory (out, in) | |
390 | char *out, *in; | |
391 | { | |
392 | int size = strlen (in) - 1; | |
393 | ||
394 | strcpy (out, in); | |
395 | ||
396 | #ifdef VMS | |
397 | /* Is it already a directory string? */ | |
398 | if (in[size] == ':' || in[size] == ']' || in[size] == '>') | |
399 | return out; | |
400 | /* Is it a VMS directory file name? If so, hack VMS syntax. */ | |
401 | else if (! index (in, '/') | |
402 | && ((size > 3 && ! strcmp (&in[size - 3], ".DIR")) | |
403 | || (size > 3 && ! strcmp (&in[size - 3], ".dir")) | |
404 | || (size > 5 && (! strncmp (&in[size - 5], ".DIR", 4) | |
405 | || ! strncmp (&in[size - 5], ".dir", 4)) | |
406 | && (in[size - 1] == '.' || in[size - 1] == ';') | |
407 | && in[size] == '1'))) | |
408 | { | |
409 | register char *p, *dot; | |
410 | char brack; | |
411 | ||
412 | /* x.dir -> [.x] | |
413 | dir:x.dir --> dir:[x] | |
414 | dir:[x]y.dir --> dir:[x.y] */ | |
415 | p = in + size; | |
416 | while (p != in && *p != ':' && *p != '>' && *p != ']') p--; | |
417 | if (p != in) | |
418 | { | |
419 | strncpy (out, in, p - in); | |
420 | out[p - in] = '\0'; | |
421 | if (*p == ':') | |
422 | { | |
423 | brack = ']'; | |
424 | strcat (out, ":["); | |
425 | } | |
426 | else | |
427 | { | |
428 | brack = *p; | |
429 | strcat (out, "."); | |
430 | } | |
431 | p++; | |
432 | } | |
433 | else | |
434 | { | |
435 | brack = ']'; | |
436 | strcpy (out, "[."); | |
437 | } | |
bfb61299 JB |
438 | dot = index (p, '.'); |
439 | if (dot) | |
570d7624 JB |
440 | { |
441 | /* blindly remove any extension */ | |
442 | size = strlen (out) + (dot - p); | |
443 | strncat (out, p, dot - p); | |
444 | } | |
445 | else | |
446 | { | |
447 | strcat (out, p); | |
448 | size = strlen (out); | |
449 | } | |
450 | out[size++] = brack; | |
451 | out[size] = '\0'; | |
452 | } | |
453 | #else /* not VMS */ | |
454 | /* For Unix syntax, Append a slash if necessary */ | |
4c3c22f3 | 455 | #ifdef MSDOS |
a5a1cc06 | 456 | if (out[size] != ':' && out[size] != '/' && out[size] != '\\') |
4c3c22f3 | 457 | #else |
570d7624 | 458 | if (out[size] != '/') |
4c3c22f3 | 459 | #endif |
570d7624 JB |
460 | strcat (out, "/"); |
461 | #endif /* not VMS */ | |
462 | return out; | |
463 | } | |
464 | ||
465 | DEFUN ("file-name-as-directory", Ffile_name_as_directory, | |
466 | Sfile_name_as_directory, 1, 1, 0, | |
467 | "Return a string representing file FILENAME interpreted as a directory.\n\ | |
468 | This operation exists because a directory is also a file, but its name as\n\ | |
469 | a directory is different from its name as a file.\n\ | |
470 | The result can be used as the value of `default-directory'\n\ | |
471 | or passed as second argument to `expand-file-name'.\n\ | |
472 | For a Unix-syntax file name, just appends a slash.\n\ | |
473 | On VMS, converts \"[X]FOO.DIR\" to \"[X.FOO]\", etc.") | |
474 | (file) | |
475 | Lisp_Object file; | |
476 | { | |
477 | char *buf; | |
0bf2eed2 | 478 | Lisp_Object handler; |
570d7624 JB |
479 | |
480 | CHECK_STRING (file, 0); | |
265a9e55 | 481 | if (NILP (file)) |
570d7624 | 482 | return Qnil; |
0bf2eed2 RS |
483 | |
484 | /* If the file name has special constructs in it, | |
485 | call the corresponding file handler. */ | |
49307295 | 486 | handler = Ffind_file_name_handler (file, Qfile_name_as_directory); |
0bf2eed2 RS |
487 | if (!NILP (handler)) |
488 | return call2 (handler, Qfile_name_as_directory, file); | |
489 | ||
570d7624 JB |
490 | buf = (char *) alloca (XSTRING (file)->size + 10); |
491 | return build_string (file_name_as_directory (buf, XSTRING (file)->data)); | |
492 | } | |
493 | \f | |
494 | /* | |
495 | * Convert from directory name to filename. | |
496 | * On VMS: | |
497 | * xyzzy:[mukesh.emacs] => xyzzy:[mukesh]emacs.dir.1 | |
498 | * xyzzy:[mukesh] => xyzzy:[000000]mukesh.dir.1 | |
499 | * On UNIX, it's simple: just make sure there is a terminating / | |
500 | ||
501 | * Value is nonzero if the string output is different from the input. | |
502 | */ | |
503 | ||
504 | directory_file_name (src, dst) | |
505 | char *src, *dst; | |
506 | { | |
507 | long slen; | |
508 | #ifdef VMS | |
509 | long rlen; | |
510 | char * ptr, * rptr; | |
511 | char bracket; | |
512 | struct FAB fab = cc$rms_fab; | |
513 | struct NAM nam = cc$rms_nam; | |
514 | char esa[NAM$C_MAXRSS]; | |
515 | #endif /* VMS */ | |
516 | ||
517 | slen = strlen (src); | |
518 | #ifdef VMS | |
519 | if (! index (src, '/') | |
520 | && (src[slen - 1] == ']' | |
521 | || src[slen - 1] == ':' | |
522 | || src[slen - 1] == '>')) | |
523 | { | |
524 | /* VMS style - convert [x.y.z] to [x.y]z, [x] to [000000]x */ | |
525 | fab.fab$l_fna = src; | |
526 | fab.fab$b_fns = slen; | |
527 | fab.fab$l_nam = &nam; | |
528 | fab.fab$l_fop = FAB$M_NAM; | |
529 | ||
530 | nam.nam$l_esa = esa; | |
531 | nam.nam$b_ess = sizeof esa; | |
532 | nam.nam$b_nop |= NAM$M_SYNCHK; | |
533 | ||
534 | /* We call SYS$PARSE to handle such things as [--] for us. */ | |
535 | if (SYS$PARSE(&fab, 0, 0) == RMS$_NORMAL) | |
536 | { | |
537 | slen = nam.nam$b_esl; | |
538 | if (esa[slen - 1] == ';' && esa[slen - 2] == '.') | |
539 | slen -= 2; | |
540 | esa[slen] = '\0'; | |
541 | src = esa; | |
542 | } | |
543 | if (src[slen - 1] != ']' && src[slen - 1] != '>') | |
544 | { | |
545 | /* what about when we have logical_name:???? */ | |
546 | if (src[slen - 1] == ':') | |
547 | { /* Xlate logical name and see what we get */ | |
548 | ptr = strcpy (dst, src); /* upper case for getenv */ | |
549 | while (*ptr) | |
550 | { | |
551 | if ('a' <= *ptr && *ptr <= 'z') | |
552 | *ptr -= 040; | |
553 | ptr++; | |
554 | } | |
555 | dst[slen - 1] = 0; /* remove colon */ | |
556 | if (!(src = egetenv (dst))) | |
557 | return 0; | |
558 | /* should we jump to the beginning of this procedure? | |
559 | Good points: allows us to use logical names that xlate | |
560 | to Unix names, | |
561 | Bad points: can be a problem if we just translated to a device | |
562 | name... | |
563 | For now, I'll punt and always expect VMS names, and hope for | |
564 | the best! */ | |
565 | slen = strlen (src); | |
566 | if (src[slen - 1] != ']' && src[slen - 1] != '>') | |
567 | { /* no recursion here! */ | |
568 | strcpy (dst, src); | |
569 | return 0; | |
570 | } | |
571 | } | |
572 | else | |
573 | { /* not a directory spec */ | |
574 | strcpy (dst, src); | |
575 | return 0; | |
576 | } | |
577 | } | |
578 | bracket = src[slen - 1]; | |
579 | ||
580 | /* If bracket is ']' or '>', bracket - 2 is the corresponding | |
581 | opening bracket. */ | |
bfb61299 JB |
582 | ptr = index (src, bracket - 2); |
583 | if (ptr == 0) | |
570d7624 JB |
584 | { /* no opening bracket */ |
585 | strcpy (dst, src); | |
586 | return 0; | |
587 | } | |
588 | if (!(rptr = rindex (src, '.'))) | |
589 | rptr = ptr; | |
590 | slen = rptr - src; | |
591 | strncpy (dst, src, slen); | |
592 | dst[slen] = '\0'; | |
593 | if (*rptr == '.') | |
594 | { | |
595 | dst[slen++] = bracket; | |
596 | dst[slen] = '\0'; | |
597 | } | |
598 | else | |
599 | { | |
600 | /* If we have the top-level of a rooted directory (i.e. xx:[000000]), | |
601 | then translate the device and recurse. */ | |
602 | if (dst[slen - 1] == ':' | |
603 | && dst[slen - 2] != ':' /* skip decnet nodes */ | |
604 | && strcmp(src + slen, "[000000]") == 0) | |
605 | { | |
606 | dst[slen - 1] = '\0'; | |
607 | if ((ptr = egetenv (dst)) | |
608 | && (rlen = strlen (ptr) - 1) > 0 | |
609 | && (ptr[rlen] == ']' || ptr[rlen] == '>') | |
610 | && ptr[rlen - 1] == '.') | |
611 | { | |
72b21817 RS |
612 | char * buf = (char *) alloca (strlen (ptr) + 1); |
613 | strcpy (buf, ptr); | |
614 | buf[rlen - 1] = ']'; | |
615 | buf[rlen] = '\0'; | |
616 | return directory_file_name (buf, dst); | |
570d7624 JB |
617 | } |
618 | else | |
619 | dst[slen - 1] = ':'; | |
620 | } | |
621 | strcat (dst, "[000000]"); | |
622 | slen += 8; | |
623 | } | |
624 | rptr++; | |
625 | rlen = strlen (rptr) - 1; | |
626 | strncat (dst, rptr, rlen); | |
627 | dst[slen + rlen] = '\0'; | |
628 | strcat (dst, ".DIR.1"); | |
629 | return 1; | |
630 | } | |
631 | #endif /* VMS */ | |
632 | /* Process as Unix format: just remove any final slash. | |
633 | But leave "/" unchanged; do not change it to "". */ | |
634 | strcpy (dst, src); | |
4c3c22f3 | 635 | if (slen > 1 |
4c3c22f3 | 636 | #ifdef MSDOS |
a5a1cc06 | 637 | && (dst[slen - 1] == '/' || dst[slen - 1] == '/') |
4c3c22f3 | 638 | && dst[slen - 2] != ':' |
a5a1cc06 RS |
639 | #else |
640 | && dst[slen - 1] == '/' | |
4c3c22f3 RS |
641 | #endif |
642 | ) | |
570d7624 JB |
643 | dst[slen - 1] = 0; |
644 | return 1; | |
645 | } | |
646 | ||
647 | DEFUN ("directory-file-name", Fdirectory_file_name, Sdirectory_file_name, | |
648 | 1, 1, 0, | |
649 | "Returns the file name of the directory named DIR.\n\ | |
650 | This is the name of the file that holds the data for the directory DIR.\n\ | |
651 | This operation exists because a directory is also a file, but its name as\n\ | |
652 | a directory is different from its name as a file.\n\ | |
653 | In Unix-syntax, this function just removes the final slash.\n\ | |
654 | On VMS, given a VMS-syntax directory name such as \"[X.Y]\",\n\ | |
655 | it returns a file name such as \"[X]Y.DIR.1\".") | |
656 | (directory) | |
657 | Lisp_Object directory; | |
658 | { | |
659 | char *buf; | |
0bf2eed2 | 660 | Lisp_Object handler; |
570d7624 JB |
661 | |
662 | CHECK_STRING (directory, 0); | |
663 | ||
265a9e55 | 664 | if (NILP (directory)) |
570d7624 | 665 | return Qnil; |
0bf2eed2 RS |
666 | |
667 | /* If the file name has special constructs in it, | |
668 | call the corresponding file handler. */ | |
49307295 | 669 | handler = Ffind_file_name_handler (directory, Qdirectory_file_name); |
0bf2eed2 RS |
670 | if (!NILP (handler)) |
671 | return call2 (handler, Qdirectory_file_name, directory); | |
672 | ||
570d7624 JB |
673 | #ifdef VMS |
674 | /* 20 extra chars is insufficient for VMS, since we might perform a | |
675 | logical name translation. an equivalence string can be up to 255 | |
676 | chars long, so grab that much extra space... - sss */ | |
677 | buf = (char *) alloca (XSTRING (directory)->size + 20 + 255); | |
678 | #else | |
679 | buf = (char *) alloca (XSTRING (directory)->size + 20); | |
680 | #endif | |
681 | directory_file_name (XSTRING (directory)->data, buf); | |
682 | return build_string (buf); | |
683 | } | |
684 | ||
685 | DEFUN ("make-temp-name", Fmake_temp_name, Smake_temp_name, 1, 1, 0, | |
686 | "Generate temporary file name (string) starting with PREFIX (a string).\n\ | |
687 | The Emacs process number forms part of the result,\n\ | |
688 | so there is no danger of generating a name being used by another process.") | |
689 | (prefix) | |
690 | Lisp_Object prefix; | |
691 | { | |
692 | Lisp_Object val; | |
693 | val = concat2 (prefix, build_string ("XXXXXX")); | |
694 | mktemp (XSTRING (val)->data); | |
695 | return val; | |
696 | } | |
697 | \f | |
698 | DEFUN ("expand-file-name", Fexpand_file_name, Sexpand_file_name, 1, 2, 0, | |
699 | "Convert FILENAME to absolute, and canonicalize it.\n\ | |
700 | Second arg DEFAULT is directory to start with if FILENAME is relative\n\ | |
701 | (does not start with slash); if DEFAULT is nil or missing,\n\ | |
702 | the current buffer's value of default-directory is used.\n\ | |
b72dea2a JB |
703 | Path components that are `.' are removed, and \n\ |
704 | path components followed by `..' are removed, along with the `..' itself;\n\ | |
705 | note that these simplifications are done without checking the resulting\n\ | |
706 | paths in the file system.\n\ | |
707 | An initial `~/' expands to your home directory.\n\ | |
708 | An initial `~USER/' expands to USER's home directory.\n\ | |
570d7624 JB |
709 | See also the function `substitute-in-file-name'.") |
710 | (name, defalt) | |
711 | Lisp_Object name, defalt; | |
712 | { | |
713 | unsigned char *nm; | |
714 | ||
715 | register unsigned char *newdir, *p, *o; | |
716 | int tlen; | |
717 | unsigned char *target; | |
718 | struct passwd *pw; | |
570d7624 JB |
719 | #ifdef VMS |
720 | unsigned char * colon = 0; | |
721 | unsigned char * close = 0; | |
722 | unsigned char * slash = 0; | |
723 | unsigned char * brack = 0; | |
724 | int lbrack = 0, rbrack = 0; | |
725 | int dots = 0; | |
726 | #endif /* VMS */ | |
4c3c22f3 RS |
727 | #ifdef MSDOS /* Demacs 1.1.2 91/10/20 Manabu Higashida */ |
728 | int drive = -1; | |
729 | int relpath = 0; | |
730 | unsigned char *tmp, *defdir; | |
731 | #endif | |
0bf2eed2 | 732 | Lisp_Object handler; |
570d7624 JB |
733 | |
734 | CHECK_STRING (name, 0); | |
735 | ||
0bf2eed2 RS |
736 | /* If the file name has special constructs in it, |
737 | call the corresponding file handler. */ | |
49307295 | 738 | handler = Ffind_file_name_handler (name, Qexpand_file_name); |
0bf2eed2 | 739 | if (!NILP (handler)) |
09121adc | 740 | return call3 (handler, Qexpand_file_name, name, defalt); |
0bf2eed2 | 741 | |
4ad827c5 RS |
742 | /* Use the buffer's default-directory if DEFALT is omitted. */ |
743 | if (NILP (defalt)) | |
744 | defalt = current_buffer->directory; | |
745 | CHECK_STRING (defalt, 1); | |
746 | ||
f14b1c68 JB |
747 | /* Make sure DEFALT is properly expanded. |
748 | It would be better to do this down below where we actually use | |
749 | defalt. Unfortunately, calling Fexpand_file_name recursively | |
750 | could invoke GC, and the strings might be relocated. This would | |
751 | be annoying because we have pointers into strings lying around | |
752 | that would need adjusting, and people would add new pointers to | |
753 | the code and forget to adjust them, resulting in intermittent bugs. | |
4ad827c5 RS |
754 | Putting this call here avoids all that crud. |
755 | ||
756 | The EQ test avoids infinite recursion. */ | |
757 | if (! NILP (defalt) && !EQ (defalt, name) | |
758 | /* This saves time in a common case. */ | |
759 | && XSTRING (defalt)->data[0] != '/') | |
f14b1c68 JB |
760 | { |
761 | struct gcpro gcpro1; | |
762 | ||
763 | GCPRO1 (name); | |
764 | defalt = Fexpand_file_name (defalt, Qnil); | |
765 | UNGCPRO; | |
766 | } | |
767 | ||
570d7624 JB |
768 | #ifdef VMS |
769 | /* Filenames on VMS are always upper case. */ | |
770 | name = Fupcase (name); | |
771 | #endif | |
4c3c22f3 RS |
772 | #ifdef FILE_SYSTEM_CASE |
773 | name = FILE_SYSTEM_CASE (name); | |
774 | #endif | |
570d7624 JB |
775 | |
776 | nm = XSTRING (name)->data; | |
777 | ||
4c3c22f3 | 778 | #ifdef MSDOS |
a5a1cc06 RS |
779 | /* First map all backslashes to slashes. */ |
780 | dostounix_filename (nm = strcpy (alloca (strlen (nm) + 1), nm)); | |
781 | ||
782 | /* Now strip drive name. */ | |
4c3c22f3 RS |
783 | { |
784 | unsigned char *colon = rindex (nm, ':'); | |
785 | if (colon) | |
786 | if (nm == colon) | |
787 | nm++; | |
788 | else | |
789 | { | |
790 | drive = tolower (colon[-1]) - 'a'; | |
791 | nm = colon + 1; | |
792 | if (*nm != '/') | |
793 | { | |
794 | defdir = alloca (MAXPATHLEN + 1); | |
795 | relpath = getdefdir (drive + 1, defdir); | |
796 | } | |
797 | } | |
798 | } | |
799 | #endif | |
800 | ||
570d7624 JB |
801 | /* If nm is absolute, flush ...// and detect /./ and /../. |
802 | If no /./ or /../ we can return right away. */ | |
803 | if ( | |
804 | nm[0] == '/' | |
805 | #ifdef VMS | |
806 | || index (nm, ':') | |
807 | #endif /* VMS */ | |
808 | ) | |
809 | { | |
f14b1c68 JB |
810 | /* If it turns out that the filename we want to return is just a |
811 | suffix of FILENAME, we don't need to go through and edit | |
812 | things; we just need to construct a new string using data | |
813 | starting at the middle of FILENAME. If we set lose to a | |
814 | non-zero value, that means we've discovered that we can't do | |
815 | that cool trick. */ | |
816 | int lose = 0; | |
817 | ||
570d7624 | 818 | p = nm; |
570d7624 JB |
819 | while (*p) |
820 | { | |
c77d647e JB |
821 | /* Since we know the path is absolute, we can assume that each |
822 | element starts with a "/". */ | |
823 | ||
824 | /* "//" anywhere isn't necessarily hairy; we just start afresh | |
825 | with the second slash. */ | |
570d7624 JB |
826 | if (p[0] == '/' && p[1] == '/' |
827 | #ifdef APOLLO | |
828 | /* // at start of filename is meaningful on Apollo system */ | |
829 | && nm != p | |
830 | #endif /* APOLLO */ | |
831 | ) | |
832 | nm = p + 1; | |
c77d647e JB |
833 | |
834 | /* "~" is hairy as the start of any path element. */ | |
570d7624 JB |
835 | if (p[0] == '/' && p[1] == '~') |
836 | nm = p + 1, lose = 1; | |
c77d647e JB |
837 | |
838 | /* "." and ".." are hairy. */ | |
839 | if (p[0] == '/' | |
840 | && p[1] == '.' | |
841 | && (p[2] == '/' | |
842 | || p[2] == 0 | |
843 | || (p[2] == '.' && (p[3] == '/' | |
844 | || p[3] == 0)))) | |
570d7624 JB |
845 | lose = 1; |
846 | #ifdef VMS | |
847 | if (p[0] == '\\') | |
848 | lose = 1; | |
849 | if (p[0] == '/') { | |
850 | /* if dev:[dir]/, move nm to / */ | |
851 | if (!slash && p > nm && (brack || colon)) { | |
852 | nm = (brack ? brack + 1 : colon + 1); | |
853 | lbrack = rbrack = 0; | |
854 | brack = 0; | |
855 | colon = 0; | |
856 | } | |
857 | slash = p; | |
858 | } | |
859 | if (p[0] == '-') | |
860 | #ifndef VMS4_4 | |
861 | /* VMS pre V4.4,convert '-'s in filenames. */ | |
862 | if (lbrack == rbrack) | |
863 | { | |
864 | if (dots < 2) /* this is to allow negative version numbers */ | |
865 | p[0] = '_'; | |
866 | } | |
867 | else | |
868 | #endif /* VMS4_4 */ | |
869 | if (lbrack > rbrack && | |
870 | ((p[-1] == '.' || p[-1] == '[' || p[-1] == '<') && | |
871 | (p[1] == '.' || p[1] == ']' || p[1] == '>'))) | |
872 | lose = 1; | |
873 | #ifndef VMS4_4 | |
874 | else | |
875 | p[0] = '_'; | |
876 | #endif /* VMS4_4 */ | |
877 | /* count open brackets, reset close bracket pointer */ | |
878 | if (p[0] == '[' || p[0] == '<') | |
879 | lbrack++, brack = 0; | |
880 | /* count close brackets, set close bracket pointer */ | |
881 | if (p[0] == ']' || p[0] == '>') | |
882 | rbrack++, brack = p; | |
883 | /* detect ][ or >< */ | |
884 | if ((p[0] == ']' || p[0] == '>') && (p[1] == '[' || p[1] == '<')) | |
885 | lose = 1; | |
886 | if ((p[0] == ':' || p[0] == ']' || p[0] == '>') && p[1] == '~') | |
887 | nm = p + 1, lose = 1; | |
888 | if (p[0] == ':' && (colon || slash)) | |
889 | /* if dev1:[dir]dev2:, move nm to dev2: */ | |
890 | if (brack) | |
891 | { | |
892 | nm = brack + 1; | |
893 | brack = 0; | |
894 | } | |
895 | /* if /pathname/dev:, move nm to dev: */ | |
896 | else if (slash) | |
897 | nm = slash + 1; | |
898 | /* if node::dev:, move colon following dev */ | |
899 | else if (colon && colon[-1] == ':') | |
900 | colon = p; | |
901 | /* if dev1:dev2:, move nm to dev2: */ | |
902 | else if (colon && colon[-1] != ':') | |
903 | { | |
904 | nm = colon + 1; | |
905 | colon = 0; | |
906 | } | |
907 | if (p[0] == ':' && !colon) | |
908 | { | |
909 | if (p[1] == ':') | |
910 | p++; | |
911 | colon = p; | |
912 | } | |
913 | if (lbrack == rbrack) | |
914 | if (p[0] == ';') | |
915 | dots = 2; | |
916 | else if (p[0] == '.') | |
917 | dots++; | |
918 | #endif /* VMS */ | |
919 | p++; | |
920 | } | |
921 | if (!lose) | |
922 | { | |
923 | #ifdef VMS | |
924 | if (index (nm, '/')) | |
925 | return build_string (sys_translate_unix (nm)); | |
926 | #endif /* VMS */ | |
4c3c22f3 | 927 | #ifndef MSDOS |
570d7624 JB |
928 | if (nm == XSTRING (name)->data) |
929 | return name; | |
930 | return build_string (nm); | |
4c3c22f3 | 931 | #endif |
570d7624 JB |
932 | } |
933 | } | |
934 | ||
935 | /* Now determine directory to start with and put it in newdir */ | |
936 | ||
937 | newdir = 0; | |
938 | ||
939 | if (nm[0] == '~') /* prefix ~ */ | |
c77d647e JB |
940 | { |
941 | if (nm[1] == '/' | |
570d7624 | 942 | #ifdef VMS |
c77d647e JB |
943 | || nm[1] == ':' |
944 | #endif /* VMS */ | |
945 | || nm[1] == 0) /* ~ by itself */ | |
946 | { | |
947 | if (!(newdir = (unsigned char *) egetenv ("HOME"))) | |
948 | newdir = (unsigned char *) ""; | |
4c3c22f3 RS |
949 | #ifdef MSDOS |
950 | dostounix_filename (newdir); | |
951 | #endif | |
c77d647e | 952 | nm++; |
570d7624 | 953 | #ifdef VMS |
c77d647e JB |
954 | nm++; /* Don't leave the slash in nm. */ |
955 | #endif /* VMS */ | |
956 | } | |
957 | else /* ~user/filename */ | |
958 | { | |
959 | for (p = nm; *p && (*p != '/' | |
570d7624 | 960 | #ifdef VMS |
c77d647e JB |
961 | && *p != ':' |
962 | #endif /* VMS */ | |
963 | ); p++); | |
964 | o = (unsigned char *) alloca (p - nm + 1); | |
965 | bcopy ((char *) nm, o, p - nm); | |
966 | o [p - nm] = 0; | |
967 | ||
968 | pw = (struct passwd *) getpwnam (o + 1); | |
969 | if (pw) | |
970 | { | |
971 | newdir = (unsigned char *) pw -> pw_dir; | |
570d7624 | 972 | #ifdef VMS |
c77d647e | 973 | nm = p + 1; /* skip the terminator */ |
570d7624 | 974 | #else |
c77d647e JB |
975 | nm = p; |
976 | #endif /* VMS */ | |
977 | } | |
e5d77022 | 978 | |
c77d647e JB |
979 | /* If we don't find a user of that name, leave the name |
980 | unchanged; don't move nm forward to p. */ | |
981 | } | |
982 | } | |
570d7624 JB |
983 | |
984 | if (nm[0] != '/' | |
985 | #ifdef VMS | |
986 | && !index (nm, ':') | |
987 | #endif /* not VMS */ | |
4c3c22f3 RS |
988 | #ifdef MSDOS |
989 | && drive == -1 | |
990 | #endif | |
570d7624 JB |
991 | && !newdir) |
992 | { | |
570d7624 JB |
993 | newdir = XSTRING (defalt)->data; |
994 | } | |
995 | ||
4c3c22f3 RS |
996 | #ifdef MSDOS |
997 | if (newdir == 0 && relpath) | |
998 | newdir = defdir; | |
999 | #endif | |
bfb61299 JB |
1000 | if (newdir != 0) |
1001 | { | |
1002 | /* Get rid of any slash at the end of newdir. */ | |
1003 | int length = strlen (newdir); | |
eabf01d4 RS |
1004 | /* Adding `length > 1 &&' makes ~ expand into / when homedir |
1005 | is the root dir. People disagree about whether that is right. | |
1006 | Anyway, we can't take the risk of this change now. */ | |
4c3c22f3 RS |
1007 | #ifdef MSDOS |
1008 | if (newdir[1] != ':' && length > 1) | |
1009 | #endif | |
eabf01d4 | 1010 | if (newdir[length - 1] == '/') |
bfb61299 JB |
1011 | { |
1012 | unsigned char *temp = (unsigned char *) alloca (length); | |
1013 | bcopy (newdir, temp, length - 1); | |
1014 | temp[length - 1] = 0; | |
1015 | newdir = temp; | |
1016 | } | |
1017 | tlen = length + 1; | |
1018 | } | |
1019 | else | |
1020 | tlen = 0; | |
570d7624 | 1021 | |
bfb61299 JB |
1022 | /* Now concatenate the directory and name to new space in the stack frame */ |
1023 | tlen += strlen (nm) + 1; | |
4c3c22f3 RS |
1024 | #ifdef MSDOS |
1025 | /* Add reserved space for drive name. */ | |
1026 | target = (unsigned char *) alloca (tlen + 2) + 2; | |
1027 | #else | |
570d7624 | 1028 | target = (unsigned char *) alloca (tlen); |
4c3c22f3 | 1029 | #endif |
570d7624 JB |
1030 | *target = 0; |
1031 | ||
1032 | if (newdir) | |
1033 | { | |
1034 | #ifndef VMS | |
1035 | if (nm[0] == 0 || nm[0] == '/') | |
1036 | strcpy (target, newdir); | |
1037 | else | |
1038 | #endif | |
c77d647e | 1039 | file_name_as_directory (target, newdir); |
570d7624 JB |
1040 | } |
1041 | ||
1042 | strcat (target, nm); | |
1043 | #ifdef VMS | |
1044 | if (index (target, '/')) | |
1045 | strcpy (target, sys_translate_unix (target)); | |
1046 | #endif /* VMS */ | |
1047 | ||
c77d647e | 1048 | /* Now canonicalize by removing /. and /foo/.. if they appear. */ |
570d7624 JB |
1049 | |
1050 | p = target; | |
1051 | o = target; | |
1052 | ||
1053 | while (*p) | |
1054 | { | |
1055 | #ifdef VMS | |
1056 | if (*p != ']' && *p != '>' && *p != '-') | |
1057 | { | |
1058 | if (*p == '\\') | |
1059 | p++; | |
1060 | *o++ = *p++; | |
1061 | } | |
1062 | else if ((p[0] == ']' || p[0] == '>') && p[0] == p[1] + 2) | |
1063 | /* brackets are offset from each other by 2 */ | |
1064 | { | |
1065 | p += 2; | |
1066 | if (*p != '.' && *p != '-' && o[-1] != '.') | |
1067 | /* convert [foo][bar] to [bar] */ | |
1068 | while (o[-1] != '[' && o[-1] != '<') | |
1069 | o--; | |
1070 | else if (*p == '-' && *o != '.') | |
1071 | *--p = '.'; | |
1072 | } | |
1073 | else if (p[0] == '-' && o[-1] == '.' && | |
1074 | (p[1] == '.' || p[1] == ']' || p[1] == '>')) | |
1075 | /* flush .foo.- ; leave - if stopped by '[' or '<' */ | |
1076 | { | |
1077 | do | |
1078 | o--; | |
1079 | while (o[-1] != '.' && o[-1] != '[' && o[-1] != '<'); | |
1080 | if (p[1] == '.') /* foo.-.bar ==> bar*/ | |
1081 | p += 2; | |
1082 | else if (o[-1] == '.') /* '.foo.-]' ==> ']' */ | |
1083 | p++, o--; | |
1084 | /* else [foo.-] ==> [-] */ | |
1085 | } | |
1086 | else | |
1087 | { | |
1088 | #ifndef VMS4_4 | |
1089 | if (*p == '-' && | |
1090 | o[-1] != '[' && o[-1] != '<' && o[-1] != '.' && | |
1091 | p[1] != ']' && p[1] != '>' && p[1] != '.') | |
1092 | *p = '_'; | |
1093 | #endif /* VMS4_4 */ | |
1094 | *o++ = *p++; | |
1095 | } | |
1096 | #else /* not VMS */ | |
1097 | if (*p != '/') | |
1098 | { | |
1099 | *o++ = *p++; | |
1100 | } | |
1101 | else if (!strncmp (p, "//", 2) | |
1102 | #ifdef APOLLO | |
1103 | /* // at start of filename is meaningful in Apollo system */ | |
1104 | && o != target | |
1105 | #endif /* APOLLO */ | |
1106 | ) | |
1107 | { | |
1108 | o = target; | |
1109 | p++; | |
1110 | } | |
c77d647e JB |
1111 | else if (p[0] == '/' |
1112 | && p[1] == '.' | |
1113 | && (p[2] == '/' | |
1114 | || p[2] == 0)) | |
1115 | { | |
1116 | /* If "/." is the entire filename, keep the "/". Otherwise, | |
1117 | just delete the whole "/.". */ | |
1118 | if (o == target && p[2] == '\0') | |
1119 | *o++ = *p; | |
1120 | p += 2; | |
1121 | } | |
570d7624 JB |
1122 | else if (!strncmp (p, "/..", 3) |
1123 | /* `/../' is the "superroot" on certain file systems. */ | |
1124 | && o != target | |
1125 | && (p[3] == '/' || p[3] == 0)) | |
1126 | { | |
1127 | while (o != target && *--o != '/') | |
1128 | ; | |
1129 | #ifdef APOLLO | |
1130 | if (o == target + 1 && o[-1] == '/' && o[0] == '/') | |
1131 | ++o; | |
1132 | else | |
1133 | #endif /* APOLLO */ | |
1134 | if (o == target && *o == '/') | |
1135 | ++o; | |
1136 | p += 3; | |
1137 | } | |
1138 | else | |
1139 | { | |
1140 | *o++ = *p++; | |
1141 | } | |
1142 | #endif /* not VMS */ | |
1143 | } | |
1144 | ||
4c3c22f3 RS |
1145 | #ifdef MSDOS |
1146 | /* at last, set drive name. */ | |
1147 | if (target[1] != ':') | |
1148 | { | |
1149 | target -= 2; | |
1150 | target[0] = (drive < 0 ? getdisk () : drive) + 'a'; | |
1151 | target[1] = ':'; | |
1152 | } | |
1153 | #endif | |
1154 | ||
570d7624 JB |
1155 | return make_string (target, o - target); |
1156 | } | |
1157 | #if 0 | |
e5d77022 JB |
1158 | /* Changed this DEFUN to a DEAFUN, so as not to confuse `make-docfile'. |
1159 | DEAFUN ("expand-file-name", Fexpand_file_name, Sexpand_file_name, 1, 2, 0, | |
570d7624 JB |
1160 | "Convert FILENAME to absolute, and canonicalize it.\n\ |
1161 | Second arg DEFAULT is directory to start with if FILENAME is relative\n\ | |
1162 | (does not start with slash); if DEFAULT is nil or missing,\n\ | |
1163 | the current buffer's value of default-directory is used.\n\ | |
1164 | Filenames containing `.' or `..' as components are simplified;\n\ | |
1165 | initial `~/' expands to your home directory.\n\ | |
1166 | See also the function `substitute-in-file-name'.") | |
1167 | (name, defalt) | |
1168 | Lisp_Object name, defalt; | |
1169 | { | |
1170 | unsigned char *nm; | |
1171 | ||
1172 | register unsigned char *newdir, *p, *o; | |
1173 | int tlen; | |
1174 | unsigned char *target; | |
1175 | struct passwd *pw; | |
1176 | int lose; | |
1177 | #ifdef VMS | |
1178 | unsigned char * colon = 0; | |
1179 | unsigned char * close = 0; | |
1180 | unsigned char * slash = 0; | |
1181 | unsigned char * brack = 0; | |
1182 | int lbrack = 0, rbrack = 0; | |
1183 | int dots = 0; | |
1184 | #endif /* VMS */ | |
1185 | ||
1186 | CHECK_STRING (name, 0); | |
1187 | ||
1188 | #ifdef VMS | |
1189 | /* Filenames on VMS are always upper case. */ | |
1190 | name = Fupcase (name); | |
1191 | #endif | |
1192 | ||
1193 | nm = XSTRING (name)->data; | |
1194 | ||
1195 | /* If nm is absolute, flush ...// and detect /./ and /../. | |
1196 | If no /./ or /../ we can return right away. */ | |
1197 | if ( | |
1198 | nm[0] == '/' | |
1199 | #ifdef VMS | |
1200 | || index (nm, ':') | |
1201 | #endif /* VMS */ | |
1202 | ) | |
1203 | { | |
1204 | p = nm; | |
1205 | lose = 0; | |
1206 | while (*p) | |
1207 | { | |
1208 | if (p[0] == '/' && p[1] == '/' | |
1209 | #ifdef APOLLO | |
1210 | /* // at start of filename is meaningful on Apollo system */ | |
1211 | && nm != p | |
1212 | #endif /* APOLLO */ | |
1213 | ) | |
1214 | nm = p + 1; | |
1215 | if (p[0] == '/' && p[1] == '~') | |
1216 | nm = p + 1, lose = 1; | |
1217 | if (p[0] == '/' && p[1] == '.' | |
1218 | && (p[2] == '/' || p[2] == 0 | |
1219 | || (p[2] == '.' && (p[3] == '/' || p[3] == 0)))) | |
1220 | lose = 1; | |
1221 | #ifdef VMS | |
1222 | if (p[0] == '\\') | |
1223 | lose = 1; | |
1224 | if (p[0] == '/') { | |
1225 | /* if dev:[dir]/, move nm to / */ | |
1226 | if (!slash && p > nm && (brack || colon)) { | |
1227 | nm = (brack ? brack + 1 : colon + 1); | |
1228 | lbrack = rbrack = 0; | |
1229 | brack = 0; | |
1230 | colon = 0; | |
1231 | } | |
1232 | slash = p; | |
1233 | } | |
1234 | if (p[0] == '-') | |
1235 | #ifndef VMS4_4 | |
1236 | /* VMS pre V4.4,convert '-'s in filenames. */ | |
1237 | if (lbrack == rbrack) | |
1238 | { | |
1239 | if (dots < 2) /* this is to allow negative version numbers */ | |
1240 | p[0] = '_'; | |
1241 | } | |
1242 | else | |
1243 | #endif /* VMS4_4 */ | |
1244 | if (lbrack > rbrack && | |
1245 | ((p[-1] == '.' || p[-1] == '[' || p[-1] == '<') && | |
1246 | (p[1] == '.' || p[1] == ']' || p[1] == '>'))) | |
1247 | lose = 1; | |
1248 | #ifndef VMS4_4 | |
1249 | else | |
1250 | p[0] = '_'; | |
1251 | #endif /* VMS4_4 */ | |
1252 | /* count open brackets, reset close bracket pointer */ | |
1253 | if (p[0] == '[' || p[0] == '<') | |
1254 | lbrack++, brack = 0; | |
1255 | /* count close brackets, set close bracket pointer */ | |
1256 | if (p[0] == ']' || p[0] == '>') | |
1257 | rbrack++, brack = p; | |
1258 | /* detect ][ or >< */ | |
1259 | if ((p[0] == ']' || p[0] == '>') && (p[1] == '[' || p[1] == '<')) | |
1260 | lose = 1; | |
1261 | if ((p[0] == ':' || p[0] == ']' || p[0] == '>') && p[1] == '~') | |
1262 | nm = p + 1, lose = 1; | |
1263 | if (p[0] == ':' && (colon || slash)) | |
1264 | /* if dev1:[dir]dev2:, move nm to dev2: */ | |
1265 | if (brack) | |
1266 | { | |
1267 | nm = brack + 1; | |
1268 | brack = 0; | |
1269 | } | |
1270 | /* if /pathname/dev:, move nm to dev: */ | |
1271 | else if (slash) | |
1272 | nm = slash + 1; | |
1273 | /* if node::dev:, move colon following dev */ | |
1274 | else if (colon && colon[-1] == ':') | |
1275 | colon = p; | |
1276 | /* if dev1:dev2:, move nm to dev2: */ | |
1277 | else if (colon && colon[-1] != ':') | |
1278 | { | |
1279 | nm = colon + 1; | |
1280 | colon = 0; | |
1281 | } | |
1282 | if (p[0] == ':' && !colon) | |
1283 | { | |
1284 | if (p[1] == ':') | |
1285 | p++; | |
1286 | colon = p; | |
1287 | } | |
1288 | if (lbrack == rbrack) | |
1289 | if (p[0] == ';') | |
1290 | dots = 2; | |
1291 | else if (p[0] == '.') | |
1292 | dots++; | |
1293 | #endif /* VMS */ | |
1294 | p++; | |
1295 | } | |
1296 | if (!lose) | |
1297 | { | |
1298 | #ifdef VMS | |
1299 | if (index (nm, '/')) | |
1300 | return build_string (sys_translate_unix (nm)); | |
1301 | #endif /* VMS */ | |
1302 | if (nm == XSTRING (name)->data) | |
1303 | return name; | |
1304 | return build_string (nm); | |
1305 | } | |
1306 | } | |
1307 | ||
1308 | /* Now determine directory to start with and put it in NEWDIR */ | |
1309 | ||
1310 | newdir = 0; | |
1311 | ||
1312 | if (nm[0] == '~') /* prefix ~ */ | |
1313 | if (nm[1] == '/' | |
1314 | #ifdef VMS | |
1315 | || nm[1] == ':' | |
1316 | #endif /* VMS */ | |
1317 | || nm[1] == 0)/* ~/filename */ | |
1318 | { | |
1319 | if (!(newdir = (unsigned char *) egetenv ("HOME"))) | |
1320 | newdir = (unsigned char *) ""; | |
1321 | nm++; | |
1322 | #ifdef VMS | |
1323 | nm++; /* Don't leave the slash in nm. */ | |
1324 | #endif /* VMS */ | |
1325 | } | |
1326 | else /* ~user/filename */ | |
1327 | { | |
1328 | /* Get past ~ to user */ | |
1329 | unsigned char *user = nm + 1; | |
1330 | /* Find end of name. */ | |
1331 | unsigned char *ptr = (unsigned char *) index (user, '/'); | |
1332 | int len = ptr ? ptr - user : strlen (user); | |
1333 | #ifdef VMS | |
1334 | unsigned char *ptr1 = index (user, ':'); | |
1335 | if (ptr1 != 0 && ptr1 - user < len) | |
1336 | len = ptr1 - user; | |
1337 | #endif /* VMS */ | |
1338 | /* Copy the user name into temp storage. */ | |
1339 | o = (unsigned char *) alloca (len + 1); | |
1340 | bcopy ((char *) user, o, len); | |
1341 | o[len] = 0; | |
1342 | ||
1343 | /* Look up the user name. */ | |
1344 | pw = (struct passwd *) getpwnam (o + 1); | |
1345 | if (!pw) | |
1346 | error ("\"%s\" isn't a registered user", o + 1); | |
1347 | ||
1348 | newdir = (unsigned char *) pw->pw_dir; | |
1349 | ||
1350 | /* Discard the user name from NM. */ | |
1351 | nm += len; | |
1352 | } | |
1353 | ||
1354 | if (nm[0] != '/' | |
1355 | #ifdef VMS | |
1356 | && !index (nm, ':') | |
1357 | #endif /* not VMS */ | |
1358 | && !newdir) | |
1359 | { | |
265a9e55 | 1360 | if (NILP (defalt)) |
570d7624 JB |
1361 | defalt = current_buffer->directory; |
1362 | CHECK_STRING (defalt, 1); | |
1363 | newdir = XSTRING (defalt)->data; | |
1364 | } | |
1365 | ||
1366 | /* Now concatenate the directory and name to new space in the stack frame */ | |
1367 | ||
1368 | tlen = (newdir ? strlen (newdir) + 1 : 0) + strlen (nm) + 1; | |
1369 | target = (unsigned char *) alloca (tlen); | |
1370 | *target = 0; | |
1371 | ||
1372 | if (newdir) | |
1373 | { | |
1374 | #ifndef VMS | |
1375 | if (nm[0] == 0 || nm[0] == '/') | |
1376 | strcpy (target, newdir); | |
1377 | else | |
1378 | #endif | |
1379 | file_name_as_directory (target, newdir); | |
1380 | } | |
1381 | ||
1382 | strcat (target, nm); | |
1383 | #ifdef VMS | |
1384 | if (index (target, '/')) | |
1385 | strcpy (target, sys_translate_unix (target)); | |
1386 | #endif /* VMS */ | |
1387 | ||
1388 | /* Now canonicalize by removing /. and /foo/.. if they appear */ | |
1389 | ||
1390 | p = target; | |
1391 | o = target; | |
1392 | ||
1393 | while (*p) | |
1394 | { | |
1395 | #ifdef VMS | |
1396 | if (*p != ']' && *p != '>' && *p != '-') | |
1397 | { | |
1398 | if (*p == '\\') | |
1399 | p++; | |
1400 | *o++ = *p++; | |
1401 | } | |
1402 | else if ((p[0] == ']' || p[0] == '>') && p[0] == p[1] + 2) | |
1403 | /* brackets are offset from each other by 2 */ | |
1404 | { | |
1405 | p += 2; | |
1406 | if (*p != '.' && *p != '-' && o[-1] != '.') | |
1407 | /* convert [foo][bar] to [bar] */ | |
1408 | while (o[-1] != '[' && o[-1] != '<') | |
1409 | o--; | |
1410 | else if (*p == '-' && *o != '.') | |
1411 | *--p = '.'; | |
1412 | } | |
1413 | else if (p[0] == '-' && o[-1] == '.' && | |
1414 | (p[1] == '.' || p[1] == ']' || p[1] == '>')) | |
1415 | /* flush .foo.- ; leave - if stopped by '[' or '<' */ | |
1416 | { | |
1417 | do | |
1418 | o--; | |
1419 | while (o[-1] != '.' && o[-1] != '[' && o[-1] != '<'); | |
1420 | if (p[1] == '.') /* foo.-.bar ==> bar*/ | |
1421 | p += 2; | |
1422 | else if (o[-1] == '.') /* '.foo.-]' ==> ']' */ | |
1423 | p++, o--; | |
1424 | /* else [foo.-] ==> [-] */ | |
1425 | } | |
1426 | else | |
1427 | { | |
1428 | #ifndef VMS4_4 | |
1429 | if (*p == '-' && | |
1430 | o[-1] != '[' && o[-1] != '<' && o[-1] != '.' && | |
1431 | p[1] != ']' && p[1] != '>' && p[1] != '.') | |
1432 | *p = '_'; | |
1433 | #endif /* VMS4_4 */ | |
1434 | *o++ = *p++; | |
1435 | } | |
1436 | #else /* not VMS */ | |
1437 | if (*p != '/') | |
1438 | { | |
1439 | *o++ = *p++; | |
1440 | } | |
1441 | else if (!strncmp (p, "//", 2) | |
1442 | #ifdef APOLLO | |
1443 | /* // at start of filename is meaningful in Apollo system */ | |
1444 | && o != target | |
1445 | #endif /* APOLLO */ | |
1446 | ) | |
1447 | { | |
1448 | o = target; | |
1449 | p++; | |
1450 | } | |
1451 | else if (p[0] == '/' && p[1] == '.' && | |
1452 | (p[2] == '/' || p[2] == 0)) | |
1453 | p += 2; | |
1454 | else if (!strncmp (p, "/..", 3) | |
1455 | /* `/../' is the "superroot" on certain file systems. */ | |
1456 | && o != target | |
1457 | && (p[3] == '/' || p[3] == 0)) | |
1458 | { | |
1459 | while (o != target && *--o != '/') | |
1460 | ; | |
1461 | #ifdef APOLLO | |
1462 | if (o == target + 1 && o[-1] == '/' && o[0] == '/') | |
1463 | ++o; | |
1464 | else | |
1465 | #endif /* APOLLO */ | |
1466 | if (o == target && *o == '/') | |
1467 | ++o; | |
1468 | p += 3; | |
1469 | } | |
1470 | else | |
1471 | { | |
1472 | *o++ = *p++; | |
1473 | } | |
1474 | #endif /* not VMS */ | |
1475 | } | |
1476 | ||
1477 | return make_string (target, o - target); | |
1478 | } | |
1479 | #endif | |
1480 | \f | |
1481 | DEFUN ("substitute-in-file-name", Fsubstitute_in_file_name, | |
1482 | Ssubstitute_in_file_name, 1, 1, 0, | |
1483 | "Substitute environment variables referred to in FILENAME.\n\ | |
1484 | `$FOO' where FOO is an environment variable name means to substitute\n\ | |
1485 | the value of that variable. The variable name should be terminated\n\ | |
1486 | with a character not a letter, digit or underscore; otherwise, enclose\n\ | |
1487 | the entire variable name in braces.\n\ | |
1488 | If `/~' appears, all of FILENAME through that `/' is discarded.\n\n\ | |
1489 | On VMS, `$' substitution is not done; this function does little and only\n\ | |
1490 | duplicates what `expand-file-name' does.") | |
1491 | (string) | |
1492 | Lisp_Object string; | |
1493 | { | |
1494 | unsigned char *nm; | |
1495 | ||
1496 | register unsigned char *s, *p, *o, *x, *endp; | |
1497 | unsigned char *target; | |
1498 | int total = 0; | |
1499 | int substituted = 0; | |
1500 | unsigned char *xnm; | |
1501 | ||
1502 | CHECK_STRING (string, 0); | |
1503 | ||
1504 | nm = XSTRING (string)->data; | |
a5a1cc06 RS |
1505 | #ifdef MSDOS |
1506 | dostounix_filename (nm = strcpy (alloca (strlen (nm) + 1), nm)); | |
1507 | substituted = !strcmp (nm, XSTRING (string)->data); | |
1508 | #endif | |
570d7624 JB |
1509 | endp = nm + XSTRING (string)->size; |
1510 | ||
1511 | /* If /~ or // appears, discard everything through first slash. */ | |
1512 | ||
1513 | for (p = nm; p != endp; p++) | |
1514 | { | |
1515 | if ((p[0] == '~' || | |
1516 | #ifdef APOLLO | |
1517 | /* // at start of file name is meaningful in Apollo system */ | |
1518 | (p[0] == '/' && p - 1 != nm) | |
1519 | #else /* not APOLLO */ | |
1520 | p[0] == '/' | |
1521 | #endif /* not APOLLO */ | |
1522 | ) | |
1523 | && p != nm && | |
1524 | #ifdef VMS | |
1525 | (p[-1] == ':' || p[-1] == ']' || p[-1] == '>' || | |
1526 | #endif /* VMS */ | |
1527 | p[-1] == '/') | |
1528 | #ifdef VMS | |
1529 | ) | |
1530 | #endif /* VMS */ | |
1531 | { | |
1532 | nm = p; | |
1533 | substituted = 1; | |
1534 | } | |
4c3c22f3 RS |
1535 | #ifdef MSDOS |
1536 | if (p[0] && p[1] == ':') | |
1537 | { | |
1538 | nm = p; | |
1539 | substituted = 1; | |
1540 | } | |
1541 | #endif /* MSDOS */ | |
570d7624 JB |
1542 | } |
1543 | ||
1544 | #ifdef VMS | |
1545 | return build_string (nm); | |
1546 | #else | |
1547 | ||
1548 | /* See if any variables are substituted into the string | |
1549 | and find the total length of their values in `total' */ | |
1550 | ||
1551 | for (p = nm; p != endp;) | |
1552 | if (*p != '$') | |
1553 | p++; | |
1554 | else | |
1555 | { | |
1556 | p++; | |
1557 | if (p == endp) | |
1558 | goto badsubst; | |
1559 | else if (*p == '$') | |
1560 | { | |
1561 | /* "$$" means a single "$" */ | |
1562 | p++; | |
1563 | total -= 1; | |
1564 | substituted = 1; | |
1565 | continue; | |
1566 | } | |
1567 | else if (*p == '{') | |
1568 | { | |
1569 | o = ++p; | |
1570 | while (p != endp && *p != '}') p++; | |
1571 | if (*p != '}') goto missingclose; | |
1572 | s = p; | |
1573 | } | |
1574 | else | |
1575 | { | |
1576 | o = p; | |
1577 | while (p != endp && (isalnum (*p) || *p == '_')) p++; | |
1578 | s = p; | |
1579 | } | |
1580 | ||
1581 | /* Copy out the variable name */ | |
1582 | target = (unsigned char *) alloca (s - o + 1); | |
1583 | strncpy (target, o, s - o); | |
1584 | target[s - o] = 0; | |
4c3c22f3 RS |
1585 | #ifdef MSDOS |
1586 | strupr (target); /* $home == $HOME etc. */ | |
1587 | #endif | |
570d7624 JB |
1588 | |
1589 | /* Get variable value */ | |
1590 | o = (unsigned char *) egetenv (target); | |
570d7624 JB |
1591 | if (!o) goto badvar; |
1592 | total += strlen (o); | |
1593 | substituted = 1; | |
1594 | } | |
1595 | ||
1596 | if (!substituted) | |
1597 | return string; | |
1598 | ||
1599 | /* If substitution required, recopy the string and do it */ | |
1600 | /* Make space in stack frame for the new copy */ | |
1601 | xnm = (unsigned char *) alloca (XSTRING (string)->size + total + 1); | |
1602 | x = xnm; | |
1603 | ||
1604 | /* Copy the rest of the name through, replacing $ constructs with values */ | |
1605 | for (p = nm; *p;) | |
1606 | if (*p != '$') | |
1607 | *x++ = *p++; | |
1608 | else | |
1609 | { | |
1610 | p++; | |
1611 | if (p == endp) | |
1612 | goto badsubst; | |
1613 | else if (*p == '$') | |
1614 | { | |
1615 | *x++ = *p++; | |
1616 | continue; | |
1617 | } | |
1618 | else if (*p == '{') | |
1619 | { | |
1620 | o = ++p; | |
1621 | while (p != endp && *p != '}') p++; | |
1622 | if (*p != '}') goto missingclose; | |
1623 | s = p++; | |
1624 | } | |
1625 | else | |
1626 | { | |
1627 | o = p; | |
1628 | while (p != endp && (isalnum (*p) || *p == '_')) p++; | |
1629 | s = p; | |
1630 | } | |
1631 | ||
1632 | /* Copy out the variable name */ | |
1633 | target = (unsigned char *) alloca (s - o + 1); | |
1634 | strncpy (target, o, s - o); | |
1635 | target[s - o] = 0; | |
4c3c22f3 RS |
1636 | #ifdef MSDOS |
1637 | strupr (target); /* $home == $HOME etc. */ | |
1638 | #endif | |
570d7624 JB |
1639 | |
1640 | /* Get variable value */ | |
1641 | o = (unsigned char *) egetenv (target); | |
570d7624 JB |
1642 | if (!o) |
1643 | goto badvar; | |
1644 | ||
1645 | strcpy (x, o); | |
1646 | x += strlen (o); | |
1647 | } | |
1648 | ||
1649 | *x = 0; | |
1650 | ||
1651 | /* If /~ or // appears, discard everything through first slash. */ | |
1652 | ||
1653 | for (p = xnm; p != x; p++) | |
1654 | if ((p[0] == '~' || | |
1655 | #ifdef APOLLO | |
1656 | /* // at start of file name is meaningful in Apollo system */ | |
1657 | (p[0] == '/' && p - 1 != xnm) | |
1658 | #else /* not APOLLO */ | |
1659 | p[0] == '/' | |
1660 | #endif /* not APOLLO */ | |
1661 | ) | |
1662 | && p != nm && p[-1] == '/') | |
1663 | xnm = p; | |
4c3c22f3 RS |
1664 | #ifdef MSDOS |
1665 | else if (p[0] && p[1] == ':') | |
1666 | xnm = p; | |
1667 | #endif | |
570d7624 JB |
1668 | |
1669 | return make_string (xnm, x - xnm); | |
1670 | ||
1671 | badsubst: | |
1672 | error ("Bad format environment-variable substitution"); | |
1673 | missingclose: | |
1674 | error ("Missing \"}\" in environment-variable substitution"); | |
1675 | badvar: | |
1676 | error ("Substituting nonexistent environment variable \"%s\"", target); | |
1677 | ||
1678 | /* NOTREACHED */ | |
1679 | #endif /* not VMS */ | |
1680 | } | |
1681 | \f | |
067ffa38 | 1682 | /* A slightly faster and more convenient way to get |
298b760e | 1683 | (directory-file-name (expand-file-name FOO)). */ |
067ffa38 | 1684 | |
570d7624 JB |
1685 | Lisp_Object |
1686 | expand_and_dir_to_file (filename, defdir) | |
1687 | Lisp_Object filename, defdir; | |
1688 | { | |
1689 | register Lisp_Object abspath; | |
1690 | ||
1691 | abspath = Fexpand_file_name (filename, defdir); | |
1692 | #ifdef VMS | |
1693 | { | |
1694 | register int c = XSTRING (abspath)->data[XSTRING (abspath)->size - 1]; | |
1695 | if (c == ':' || c == ']' || c == '>') | |
1696 | abspath = Fdirectory_file_name (abspath); | |
1697 | } | |
1698 | #else | |
1699 | /* Remove final slash, if any (unless path is root). | |
1700 | stat behaves differently depending! */ | |
1701 | if (XSTRING (abspath)->size > 1 | |
1702 | && XSTRING (abspath)->data[XSTRING (abspath)->size - 1] == '/') | |
ddc61f46 RS |
1703 | /* We cannot take shortcuts; they might be wrong for magic file names. */ |
1704 | abspath = Fdirectory_file_name (abspath); | |
570d7624 JB |
1705 | #endif |
1706 | return abspath; | |
1707 | } | |
1708 | \f | |
1709 | barf_or_query_if_file_exists (absname, querystring, interactive) | |
1710 | Lisp_Object absname; | |
1711 | unsigned char *querystring; | |
1712 | int interactive; | |
1713 | { | |
1714 | register Lisp_Object tem; | |
4018b5ef | 1715 | struct stat statbuf; |
570d7624 JB |
1716 | struct gcpro gcpro1; |
1717 | ||
4018b5ef RS |
1718 | /* stat is a good way to tell whether the file exists, |
1719 | regardless of what access permissions it has. */ | |
1720 | if (stat (XSTRING (absname)->data, &statbuf) >= 0) | |
570d7624 JB |
1721 | { |
1722 | if (! interactive) | |
1723 | Fsignal (Qfile_already_exists, | |
1724 | Fcons (build_string ("File already exists"), | |
1725 | Fcons (absname, Qnil))); | |
1726 | GCPRO1 (absname); | |
1727 | tem = do_yes_or_no_p (format1 ("File %s already exists; %s anyway? ", | |
1728 | XSTRING (absname)->data, querystring)); | |
1729 | UNGCPRO; | |
265a9e55 | 1730 | if (NILP (tem)) |
570d7624 JB |
1731 | Fsignal (Qfile_already_exists, |
1732 | Fcons (build_string ("File already exists"), | |
1733 | Fcons (absname, Qnil))); | |
1734 | } | |
1735 | return; | |
1736 | } | |
1737 | ||
1738 | DEFUN ("copy-file", Fcopy_file, Scopy_file, 2, 4, | |
349a7710 | 1739 | "fCopy file: \nFCopy %s to file: \np\nP", |
570d7624 JB |
1740 | "Copy FILE to NEWNAME. Both args must be strings.\n\ |
1741 | Signals a `file-already-exists' error if file NEWNAME already exists,\n\ | |
1742 | unless a third argument OK-IF-ALREADY-EXISTS is supplied and non-nil.\n\ | |
1743 | A number as third arg means request confirmation if NEWNAME already exists.\n\ | |
1744 | This is what happens in interactive use with M-x.\n\ | |
349a7710 JB |
1745 | Fourth arg KEEP-TIME non-nil means give the new file the same\n\ |
1746 | last-modified time as the old one. (This works on only some systems.)\n\ | |
1747 | A prefix arg makes KEEP-TIME non-nil.") | |
570d7624 JB |
1748 | (filename, newname, ok_if_already_exists, keep_date) |
1749 | Lisp_Object filename, newname, ok_if_already_exists, keep_date; | |
1750 | { | |
1751 | int ifd, ofd, n; | |
1752 | char buf[16 * 1024]; | |
1753 | struct stat st; | |
32f4334d | 1754 | Lisp_Object handler; |
570d7624 | 1755 | struct gcpro gcpro1, gcpro2; |
b5148e85 | 1756 | int count = specpdl_ptr - specpdl; |
f73b0ada | 1757 | int input_file_statable_p; |
570d7624 JB |
1758 | |
1759 | GCPRO2 (filename, newname); | |
1760 | CHECK_STRING (filename, 0); | |
1761 | CHECK_STRING (newname, 1); | |
1762 | filename = Fexpand_file_name (filename, Qnil); | |
1763 | newname = Fexpand_file_name (newname, Qnil); | |
32f4334d | 1764 | |
0bf2eed2 | 1765 | /* If the input file name has special constructs in it, |
32f4334d | 1766 | call the corresponding file handler. */ |
49307295 | 1767 | handler = Ffind_file_name_handler (filename, Qcopy_file); |
0bf2eed2 | 1768 | /* Likewise for output file name. */ |
51cf6d37 | 1769 | if (NILP (handler)) |
49307295 | 1770 | handler = Ffind_file_name_handler (newname, Qcopy_file); |
32f4334d | 1771 | if (!NILP (handler)) |
36712b0a KH |
1772 | RETURN_UNGCPRO (call5 (handler, Qcopy_file, filename, newname, |
1773 | ok_if_already_exists, keep_date)); | |
32f4334d | 1774 | |
265a9e55 | 1775 | if (NILP (ok_if_already_exists) |
570d7624 JB |
1776 | || XTYPE (ok_if_already_exists) == Lisp_Int) |
1777 | barf_or_query_if_file_exists (newname, "copy to it", | |
1778 | XTYPE (ok_if_already_exists) == Lisp_Int); | |
1779 | ||
4018b5ef | 1780 | ifd = open (XSTRING (filename)->data, O_RDONLY); |
570d7624 JB |
1781 | if (ifd < 0) |
1782 | report_file_error ("Opening input file", Fcons (filename, Qnil)); | |
1783 | ||
b5148e85 RS |
1784 | record_unwind_protect (close_file_unwind, make_number (ifd)); |
1785 | ||
f73b0ada BF |
1786 | /* We can only copy regular files and symbolic links. Other files are not |
1787 | copyable by us. */ | |
1788 | input_file_statable_p = (fstat (ifd, &st) >= 0); | |
1789 | ||
1790 | #if defined (S_ISREG) && defined (S_ISLNK) | |
1791 | if (input_file_statable_p) | |
1792 | { | |
1793 | if (!(S_ISREG (st.st_mode)) && !(S_ISLNK (st.st_mode))) | |
1794 | { | |
1795 | #if defined (EISDIR) | |
1796 | /* Get a better looking error message. */ | |
1797 | errno = EISDIR; | |
1798 | #endif /* EISDIR */ | |
1799 | report_file_error ("Non-regular file", Fcons (filename, Qnil)); | |
1800 | } | |
1801 | } | |
1802 | #endif /* S_ISREG && S_ISLNK */ | |
1803 | ||
570d7624 JB |
1804 | #ifdef VMS |
1805 | /* Create the copy file with the same record format as the input file */ | |
1806 | ofd = sys_creat (XSTRING (newname)->data, 0666, ifd); | |
1807 | #else | |
4c3c22f3 RS |
1808 | #ifdef MSDOS |
1809 | /* System's default file type was set to binary by _fmode in emacs.c. */ | |
1810 | ofd = creat (XSTRING (newname)->data, S_IREAD | S_IWRITE); | |
1811 | #else /* not MSDOS */ | |
570d7624 | 1812 | ofd = creat (XSTRING (newname)->data, 0666); |
4c3c22f3 | 1813 | #endif /* not MSDOS */ |
570d7624 JB |
1814 | #endif /* VMS */ |
1815 | if (ofd < 0) | |
66331187 | 1816 | report_file_error ("Opening output file", Fcons (newname, Qnil)); |
b5148e85 RS |
1817 | |
1818 | record_unwind_protect (close_file_unwind, make_number (ofd)); | |
570d7624 | 1819 | |
b5148e85 RS |
1820 | immediate_quit = 1; |
1821 | QUIT; | |
570d7624 JB |
1822 | while ((n = read (ifd, buf, sizeof buf)) > 0) |
1823 | if (write (ofd, buf, n) != n) | |
66331187 | 1824 | report_file_error ("I/O error", Fcons (newname, Qnil)); |
b5148e85 | 1825 | immediate_quit = 0; |
570d7624 | 1826 | |
5acac34e RS |
1827 | /* Closing the output clobbers the file times on some systems. */ |
1828 | if (close (ofd) < 0) | |
1829 | report_file_error ("I/O error", Fcons (newname, Qnil)); | |
1830 | ||
f73b0ada | 1831 | if (input_file_statable_p) |
570d7624 | 1832 | { |
265a9e55 | 1833 | if (!NILP (keep_date)) |
570d7624 | 1834 | { |
de5bf5d3 JB |
1835 | EMACS_TIME atime, mtime; |
1836 | EMACS_SET_SECS_USECS (atime, st.st_atime, 0); | |
1837 | EMACS_SET_SECS_USECS (mtime, st.st_mtime, 0); | |
1838 | EMACS_SET_UTIMES (XSTRING (newname)->data, atime, mtime); | |
570d7624 | 1839 | } |
570d7624 JB |
1840 | #ifdef APOLLO |
1841 | if (!egetenv ("USE_DOMAIN_ACLS")) | |
1842 | #endif | |
de5bf5d3 | 1843 | chmod (XSTRING (newname)->data, st.st_mode & 07777); |
570d7624 JB |
1844 | } |
1845 | ||
5acac34e RS |
1846 | close (ifd); |
1847 | ||
b5148e85 RS |
1848 | /* Discard the unwind protects. */ |
1849 | specpdl_ptr = specpdl + count; | |
1850 | ||
570d7624 JB |
1851 | UNGCPRO; |
1852 | return Qnil; | |
1853 | } | |
1854 | ||
9bbe01fb | 1855 | DEFUN ("make-directory-internal", Fmake_directory_internal, |
353cfc19 | 1856 | Smake_directory_internal, 1, 1, 0, |
570d7624 JB |
1857 | "Create a directory. One argument, a file name string.") |
1858 | (dirname) | |
1859 | Lisp_Object dirname; | |
1860 | { | |
1861 | unsigned char *dir; | |
32f4334d | 1862 | Lisp_Object handler; |
570d7624 JB |
1863 | |
1864 | CHECK_STRING (dirname, 0); | |
1865 | dirname = Fexpand_file_name (dirname, Qnil); | |
32f4334d | 1866 | |
a6e6e718 | 1867 | handler = Ffind_file_name_handler (dirname, Qmake_directory_internal); |
32f4334d | 1868 | if (!NILP (handler)) |
e508ad53 | 1869 | return call2 (handler, Qmake_directory_internal, dirname); |
9bbe01fb | 1870 | |
570d7624 JB |
1871 | dir = XSTRING (dirname)->data; |
1872 | ||
1873 | if (mkdir (dir, 0777) != 0) | |
1874 | report_file_error ("Creating directory", Flist (1, &dirname)); | |
1875 | ||
32f4334d | 1876 | return Qnil; |
570d7624 JB |
1877 | } |
1878 | ||
aa734e17 | 1879 | DEFUN ("delete-directory", Fdelete_directory, Sdelete_directory, 1, 1, "FDelete directory: ", |
1691b32b | 1880 | "Delete a directory. One argument, a file name or directory name string.") |
570d7624 JB |
1881 | (dirname) |
1882 | Lisp_Object dirname; | |
1883 | { | |
1884 | unsigned char *dir; | |
32f4334d | 1885 | Lisp_Object handler; |
570d7624 JB |
1886 | |
1887 | CHECK_STRING (dirname, 0); | |
1691b32b | 1888 | dirname = Fdirectory_file_name (Fexpand_file_name (dirname, Qnil)); |
570d7624 JB |
1889 | dir = XSTRING (dirname)->data; |
1890 | ||
49307295 | 1891 | handler = Ffind_file_name_handler (dirname, Qdelete_directory); |
32f4334d RS |
1892 | if (!NILP (handler)) |
1893 | return call2 (handler, Qdelete_directory, dirname); | |
1894 | ||
570d7624 JB |
1895 | if (rmdir (dir) != 0) |
1896 | report_file_error ("Removing directory", Flist (1, &dirname)); | |
1897 | ||
1898 | return Qnil; | |
1899 | } | |
1900 | ||
1901 | DEFUN ("delete-file", Fdelete_file, Sdelete_file, 1, 1, "fDelete file: ", | |
1902 | "Delete specified file. One argument, a file name string.\n\ | |
1903 | If file has multiple names, it continues to exist with the other names.") | |
1904 | (filename) | |
1905 | Lisp_Object filename; | |
1906 | { | |
1b50b4f2 | 1907 | int count = specpdl_ptr - specpdl; |
32f4334d | 1908 | Lisp_Object handler; |
570d7624 JB |
1909 | CHECK_STRING (filename, 0); |
1910 | filename = Fexpand_file_name (filename, Qnil); | |
32f4334d | 1911 | |
1b50b4f2 | 1912 | specbind (Qcompletion_ignored_extensions, Qnil); |
49307295 | 1913 | handler = Ffind_file_name_handler (filename, Qdelete_file); |
32f4334d | 1914 | if (!NILP (handler)) |
1b50b4f2 | 1915 | return unbind_to (count, call2 (handler, Qdelete_file, filename)); |
32f4334d | 1916 | |
570d7624 JB |
1917 | if (0 > unlink (XSTRING (filename)->data)) |
1918 | report_file_error ("Removing old name", Flist (1, &filename)); | |
1b50b4f2 | 1919 | return unbind_to (count, Qnil); |
570d7624 JB |
1920 | } |
1921 | ||
1922 | DEFUN ("rename-file", Frename_file, Srename_file, 2, 3, | |
1923 | "fRename file: \nFRename %s to file: \np", | |
1924 | "Rename FILE as NEWNAME. Both args strings.\n\ | |
1925 | If file has names other than FILE, it continues to have those names.\n\ | |
1926 | Signals a `file-already-exists' error if a file NEWNAME already exists\n\ | |
1927 | unless optional third argument OK-IF-ALREADY-EXISTS is non-nil.\n\ | |
1928 | A number as third arg means request confirmation if NEWNAME already exists.\n\ | |
1929 | This is what happens in interactive use with M-x.") | |
1930 | (filename, newname, ok_if_already_exists) | |
1931 | Lisp_Object filename, newname, ok_if_already_exists; | |
1932 | { | |
1933 | #ifdef NO_ARG_ARRAY | |
1934 | Lisp_Object args[2]; | |
1935 | #endif | |
32f4334d | 1936 | Lisp_Object handler; |
570d7624 JB |
1937 | struct gcpro gcpro1, gcpro2; |
1938 | ||
1939 | GCPRO2 (filename, newname); | |
1940 | CHECK_STRING (filename, 0); | |
1941 | CHECK_STRING (newname, 1); | |
1942 | filename = Fexpand_file_name (filename, Qnil); | |
1943 | newname = Fexpand_file_name (newname, Qnil); | |
32f4334d RS |
1944 | |
1945 | /* If the file name has special constructs in it, | |
1946 | call the corresponding file handler. */ | |
49307295 | 1947 | handler = Ffind_file_name_handler (filename, Qrename_file); |
51cf6d37 | 1948 | if (NILP (handler)) |
49307295 | 1949 | handler = Ffind_file_name_handler (newname, Qrename_file); |
32f4334d | 1950 | if (!NILP (handler)) |
36712b0a KH |
1951 | RETURN_UNGCPRO (call4 (handler, Qrename_file, |
1952 | filename, newname, ok_if_already_exists)); | |
32f4334d | 1953 | |
265a9e55 | 1954 | if (NILP (ok_if_already_exists) |
570d7624 JB |
1955 | || XTYPE (ok_if_already_exists) == Lisp_Int) |
1956 | barf_or_query_if_file_exists (newname, "rename to it", | |
1957 | XTYPE (ok_if_already_exists) == Lisp_Int); | |
1958 | #ifndef BSD4_1 | |
1959 | if (0 > rename (XSTRING (filename)->data, XSTRING (newname)->data)) | |
1960 | #else | |
1961 | if (0 > link (XSTRING (filename)->data, XSTRING (newname)->data) | |
1962 | || 0 > unlink (XSTRING (filename)->data)) | |
1963 | #endif | |
1964 | { | |
1965 | if (errno == EXDEV) | |
1966 | { | |
d093c3ac RM |
1967 | Fcopy_file (filename, newname, |
1968 | /* We have already prompted if it was an integer, | |
1969 | so don't have copy-file prompt again. */ | |
1970 | NILP (ok_if_already_exists) ? Qnil : Qt, Qt); | |
570d7624 JB |
1971 | Fdelete_file (filename); |
1972 | } | |
1973 | else | |
1974 | #ifdef NO_ARG_ARRAY | |
1975 | { | |
1976 | args[0] = filename; | |
1977 | args[1] = newname; | |
1978 | report_file_error ("Renaming", Flist (2, args)); | |
1979 | } | |
1980 | #else | |
1981 | report_file_error ("Renaming", Flist (2, &filename)); | |
1982 | #endif | |
1983 | } | |
1984 | UNGCPRO; | |
1985 | return Qnil; | |
1986 | } | |
1987 | ||
1988 | DEFUN ("add-name-to-file", Fadd_name_to_file, Sadd_name_to_file, 2, 3, | |
1989 | "fAdd name to file: \nFName to add to %s: \np", | |
1990 | "Give FILE additional name NEWNAME. Both args strings.\n\ | |
1991 | Signals a `file-already-exists' error if a file NEWNAME already exists\n\ | |
1992 | unless optional third argument OK-IF-ALREADY-EXISTS is non-nil.\n\ | |
1993 | A number as third arg means request confirmation if NEWNAME already exists.\n\ | |
1994 | This is what happens in interactive use with M-x.") | |
1995 | (filename, newname, ok_if_already_exists) | |
1996 | Lisp_Object filename, newname, ok_if_already_exists; | |
1997 | { | |
1998 | #ifdef NO_ARG_ARRAY | |
1999 | Lisp_Object args[2]; | |
2000 | #endif | |
32f4334d | 2001 | Lisp_Object handler; |
570d7624 JB |
2002 | struct gcpro gcpro1, gcpro2; |
2003 | ||
2004 | GCPRO2 (filename, newname); | |
2005 | CHECK_STRING (filename, 0); | |
2006 | CHECK_STRING (newname, 1); | |
2007 | filename = Fexpand_file_name (filename, Qnil); | |
2008 | newname = Fexpand_file_name (newname, Qnil); | |
32f4334d RS |
2009 | |
2010 | /* If the file name has special constructs in it, | |
2011 | call the corresponding file handler. */ | |
49307295 | 2012 | handler = Ffind_file_name_handler (filename, Qadd_name_to_file); |
32f4334d | 2013 | if (!NILP (handler)) |
36712b0a KH |
2014 | RETURN_UNGCPRO (call4 (handler, Qadd_name_to_file, filename, |
2015 | newname, ok_if_already_exists)); | |
32f4334d | 2016 | |
265a9e55 | 2017 | if (NILP (ok_if_already_exists) |
570d7624 JB |
2018 | || XTYPE (ok_if_already_exists) == Lisp_Int) |
2019 | barf_or_query_if_file_exists (newname, "make it a new name", | |
2020 | XTYPE (ok_if_already_exists) == Lisp_Int); | |
2021 | unlink (XSTRING (newname)->data); | |
2022 | if (0 > link (XSTRING (filename)->data, XSTRING (newname)->data)) | |
2023 | { | |
2024 | #ifdef NO_ARG_ARRAY | |
2025 | args[0] = filename; | |
2026 | args[1] = newname; | |
2027 | report_file_error ("Adding new name", Flist (2, args)); | |
2028 | #else | |
2029 | report_file_error ("Adding new name", Flist (2, &filename)); | |
2030 | #endif | |
2031 | } | |
2032 | ||
2033 | UNGCPRO; | |
2034 | return Qnil; | |
2035 | } | |
2036 | ||
2037 | #ifdef S_IFLNK | |
2038 | DEFUN ("make-symbolic-link", Fmake_symbolic_link, Smake_symbolic_link, 2, 3, | |
2039 | "FMake symbolic link to file: \nFMake symbolic link to file %s: \np", | |
2040 | "Make a symbolic link to FILENAME, named LINKNAME. Both args strings.\n\ | |
11183104 | 2041 | Signals a `file-already-exists' error if a file LINKNAME already exists\n\ |
570d7624 | 2042 | unless optional third argument OK-IF-ALREADY-EXISTS is non-nil.\n\ |
11183104 | 2043 | A number as third arg means request confirmation if LINKNAME already exists.\n\ |
570d7624 | 2044 | This happens for interactive use with M-x.") |
e5d77022 JB |
2045 | (filename, linkname, ok_if_already_exists) |
2046 | Lisp_Object filename, linkname, ok_if_already_exists; | |
570d7624 JB |
2047 | { |
2048 | #ifdef NO_ARG_ARRAY | |
2049 | Lisp_Object args[2]; | |
2050 | #endif | |
32f4334d | 2051 | Lisp_Object handler; |
570d7624 JB |
2052 | struct gcpro gcpro1, gcpro2; |
2053 | ||
e5d77022 | 2054 | GCPRO2 (filename, linkname); |
570d7624 | 2055 | CHECK_STRING (filename, 0); |
e5d77022 | 2056 | CHECK_STRING (linkname, 1); |
d9bc1c99 RS |
2057 | /* If the link target has a ~, we must expand it to get |
2058 | a truly valid file name. Otherwise, do not expand; | |
2059 | we want to permit links to relative file names. */ | |
2060 | if (XSTRING (filename)->data[0] == '~') | |
2061 | filename = Fexpand_file_name (filename, Qnil); | |
e5d77022 | 2062 | linkname = Fexpand_file_name (linkname, Qnil); |
32f4334d RS |
2063 | |
2064 | /* If the file name has special constructs in it, | |
2065 | call the corresponding file handler. */ | |
49307295 | 2066 | handler = Ffind_file_name_handler (filename, Qmake_symbolic_link); |
32f4334d | 2067 | if (!NILP (handler)) |
36712b0a KH |
2068 | RETURN_UNGCPRO (call4 (handler, Qmake_symbolic_link, filename, |
2069 | linkname, ok_if_already_exists)); | |
32f4334d | 2070 | |
265a9e55 | 2071 | if (NILP (ok_if_already_exists) |
570d7624 | 2072 | || XTYPE (ok_if_already_exists) == Lisp_Int) |
e5d77022 | 2073 | barf_or_query_if_file_exists (linkname, "make it a link", |
570d7624 | 2074 | XTYPE (ok_if_already_exists) == Lisp_Int); |
e5d77022 | 2075 | if (0 > symlink (XSTRING (filename)->data, XSTRING (linkname)->data)) |
570d7624 JB |
2076 | { |
2077 | /* If we didn't complain already, silently delete existing file. */ | |
2078 | if (errno == EEXIST) | |
2079 | { | |
9083124b | 2080 | unlink (XSTRING (linkname)->data); |
e5d77022 | 2081 | if (0 <= symlink (XSTRING (filename)->data, XSTRING (linkname)->data)) |
1a04498e KH |
2082 | { |
2083 | UNGCPRO; | |
2084 | return Qnil; | |
2085 | } | |
570d7624 JB |
2086 | } |
2087 | ||
2088 | #ifdef NO_ARG_ARRAY | |
2089 | args[0] = filename; | |
e5d77022 | 2090 | args[1] = linkname; |
570d7624 JB |
2091 | report_file_error ("Making symbolic link", Flist (2, args)); |
2092 | #else | |
2093 | report_file_error ("Making symbolic link", Flist (2, &filename)); | |
2094 | #endif | |
2095 | } | |
2096 | UNGCPRO; | |
2097 | return Qnil; | |
2098 | } | |
2099 | #endif /* S_IFLNK */ | |
2100 | ||
2101 | #ifdef VMS | |
2102 | ||
2103 | DEFUN ("define-logical-name", Fdefine_logical_name, Sdefine_logical_name, | |
2104 | 2, 2, "sDefine logical name: \nsDefine logical name %s as: ", | |
2105 | "Define the job-wide logical name NAME to have the value STRING.\n\ | |
2106 | If STRING is nil or a null string, the logical name NAME is deleted.") | |
2107 | (varname, string) | |
2108 | Lisp_Object varname; | |
2109 | Lisp_Object string; | |
2110 | { | |
2111 | CHECK_STRING (varname, 0); | |
265a9e55 | 2112 | if (NILP (string)) |
570d7624 JB |
2113 | delete_logical_name (XSTRING (varname)->data); |
2114 | else | |
2115 | { | |
2116 | CHECK_STRING (string, 1); | |
2117 | ||
2118 | if (XSTRING (string)->size == 0) | |
2119 | delete_logical_name (XSTRING (varname)->data); | |
2120 | else | |
2121 | define_logical_name (XSTRING (varname)->data, XSTRING (string)->data); | |
2122 | } | |
2123 | ||
2124 | return string; | |
2125 | } | |
2126 | #endif /* VMS */ | |
2127 | ||
2128 | #ifdef HPUX_NET | |
2129 | ||
2130 | DEFUN ("sysnetunam", Fsysnetunam, Ssysnetunam, 2, 2, 0, | |
2131 | "Open a network connection to PATH using LOGIN as the login string.") | |
2132 | (path, login) | |
2133 | Lisp_Object path, login; | |
2134 | { | |
2135 | int netresult; | |
2136 | ||
2137 | CHECK_STRING (path, 0); | |
2138 | CHECK_STRING (login, 0); | |
2139 | ||
2140 | netresult = netunam (XSTRING (path)->data, XSTRING (login)->data); | |
2141 | ||
2142 | if (netresult == -1) | |
2143 | return Qnil; | |
2144 | else | |
2145 | return Qt; | |
2146 | } | |
2147 | #endif /* HPUX_NET */ | |
2148 | \f | |
2149 | DEFUN ("file-name-absolute-p", Ffile_name_absolute_p, Sfile_name_absolute_p, | |
2150 | 1, 1, 0, | |
2151 | "Return t if file FILENAME specifies an absolute path name.\n\ | |
2152 | On Unix, this is a name starting with a `/' or a `~'.") | |
2153 | (filename) | |
2154 | Lisp_Object filename; | |
2155 | { | |
2156 | unsigned char *ptr; | |
2157 | ||
2158 | CHECK_STRING (filename, 0); | |
2159 | ptr = XSTRING (filename)->data; | |
2160 | if (*ptr == '/' || *ptr == '~' | |
2161 | #ifdef VMS | |
2162 | /* ??? This criterion is probably wrong for '<'. */ | |
2163 | || index (ptr, ':') || index (ptr, '<') | |
2164 | || (*ptr == '[' && (ptr[1] != '-' || (ptr[2] != '.' && ptr[2] != ']')) | |
2165 | && ptr[1] != '.') | |
2166 | #endif /* VMS */ | |
4c3c22f3 | 2167 | #ifdef MSDOS |
a5a1cc06 | 2168 | || (*ptr != 0 && ptr[1] == ':' && (ptr[2] == '/' || ptr[2] == '\\')) |
4c3c22f3 | 2169 | #endif |
570d7624 JB |
2170 | ) |
2171 | return Qt; | |
2172 | else | |
2173 | return Qnil; | |
2174 | } | |
2175 | ||
2176 | DEFUN ("file-exists-p", Ffile_exists_p, Sfile_exists_p, 1, 1, 0, | |
2177 | "Return t if file FILENAME exists. (This does not mean you can read it.)\n\ | |
2178 | See also `file-readable-p' and `file-attributes'.") | |
2179 | (filename) | |
2180 | Lisp_Object filename; | |
2181 | { | |
2182 | Lisp_Object abspath; | |
32f4334d | 2183 | Lisp_Object handler; |
4018b5ef | 2184 | struct stat statbuf; |
570d7624 JB |
2185 | |
2186 | CHECK_STRING (filename, 0); | |
2187 | abspath = Fexpand_file_name (filename, Qnil); | |
32f4334d RS |
2188 | |
2189 | /* If the file name has special constructs in it, | |
2190 | call the corresponding file handler. */ | |
49307295 | 2191 | handler = Ffind_file_name_handler (abspath, Qfile_exists_p); |
32f4334d | 2192 | if (!NILP (handler)) |
09121adc | 2193 | return call2 (handler, Qfile_exists_p, abspath); |
32f4334d | 2194 | |
4018b5ef | 2195 | return (stat (XSTRING (abspath)->data, &statbuf) >= 0) ? Qt : Qnil; |
570d7624 JB |
2196 | } |
2197 | ||
2198 | DEFUN ("file-executable-p", Ffile_executable_p, Sfile_executable_p, 1, 1, 0, | |
2199 | "Return t if FILENAME can be executed by you.\n\ | |
8b235fde | 2200 | For a directory, this means you can access files in that directory.") |
570d7624 JB |
2201 | (filename) |
2202 | Lisp_Object filename; | |
2203 | ||
2204 | { | |
2205 | Lisp_Object abspath; | |
32f4334d | 2206 | Lisp_Object handler; |
570d7624 JB |
2207 | |
2208 | CHECK_STRING (filename, 0); | |
2209 | abspath = Fexpand_file_name (filename, Qnil); | |
32f4334d RS |
2210 | |
2211 | /* If the file name has special constructs in it, | |
2212 | call the corresponding file handler. */ | |
49307295 | 2213 | handler = Ffind_file_name_handler (abspath, Qfile_executable_p); |
32f4334d | 2214 | if (!NILP (handler)) |
09121adc | 2215 | return call2 (handler, Qfile_executable_p, abspath); |
32f4334d | 2216 | |
570d7624 JB |
2217 | return (access (XSTRING (abspath)->data, 1) >= 0) ? Qt : Qnil; |
2218 | } | |
2219 | ||
2220 | DEFUN ("file-readable-p", Ffile_readable_p, Sfile_readable_p, 1, 1, 0, | |
2221 | "Return t if file FILENAME exists and you can read it.\n\ | |
2222 | See also `file-exists-p' and `file-attributes'.") | |
2223 | (filename) | |
2224 | Lisp_Object filename; | |
2225 | { | |
2226 | Lisp_Object abspath; | |
32f4334d | 2227 | Lisp_Object handler; |
4018b5ef | 2228 | int desc; |
570d7624 JB |
2229 | |
2230 | CHECK_STRING (filename, 0); | |
2231 | abspath = Fexpand_file_name (filename, Qnil); | |
32f4334d RS |
2232 | |
2233 | /* If the file name has special constructs in it, | |
2234 | call the corresponding file handler. */ | |
49307295 | 2235 | handler = Ffind_file_name_handler (abspath, Qfile_readable_p); |
32f4334d | 2236 | if (!NILP (handler)) |
09121adc | 2237 | return call2 (handler, Qfile_readable_p, abspath); |
32f4334d | 2238 | |
4018b5ef RS |
2239 | desc = open (XSTRING (abspath)->data, O_RDONLY); |
2240 | if (desc < 0) | |
2241 | return Qnil; | |
2242 | close (desc); | |
2243 | return Qt; | |
570d7624 JB |
2244 | } |
2245 | ||
2246 | DEFUN ("file-symlink-p", Ffile_symlink_p, Sfile_symlink_p, 1, 1, 0, | |
89de89c7 RS |
2247 | "Return non-nil if file FILENAME is the name of a symbolic link.\n\ |
2248 | The value is the name of the file to which it is linked.\n\ | |
2249 | Otherwise returns nil.") | |
570d7624 JB |
2250 | (filename) |
2251 | Lisp_Object filename; | |
2252 | { | |
2253 | #ifdef S_IFLNK | |
2254 | char *buf; | |
2255 | int bufsize; | |
2256 | int valsize; | |
2257 | Lisp_Object val; | |
32f4334d | 2258 | Lisp_Object handler; |
570d7624 JB |
2259 | |
2260 | CHECK_STRING (filename, 0); | |
2261 | filename = Fexpand_file_name (filename, Qnil); | |
2262 | ||
32f4334d RS |
2263 | /* If the file name has special constructs in it, |
2264 | call the corresponding file handler. */ | |
49307295 | 2265 | handler = Ffind_file_name_handler (filename, Qfile_symlink_p); |
32f4334d RS |
2266 | if (!NILP (handler)) |
2267 | return call2 (handler, Qfile_symlink_p, filename); | |
2268 | ||
570d7624 JB |
2269 | bufsize = 100; |
2270 | while (1) | |
2271 | { | |
2272 | buf = (char *) xmalloc (bufsize); | |
2273 | bzero (buf, bufsize); | |
2274 | valsize = readlink (XSTRING (filename)->data, buf, bufsize); | |
2275 | if (valsize < bufsize) break; | |
2276 | /* Buffer was not long enough */ | |
9ac0d9e0 | 2277 | xfree (buf); |
570d7624 JB |
2278 | bufsize *= 2; |
2279 | } | |
2280 | if (valsize == -1) | |
2281 | { | |
9ac0d9e0 | 2282 | xfree (buf); |
570d7624 JB |
2283 | return Qnil; |
2284 | } | |
2285 | val = make_string (buf, valsize); | |
9ac0d9e0 | 2286 | xfree (buf); |
570d7624 JB |
2287 | return val; |
2288 | #else /* not S_IFLNK */ | |
2289 | return Qnil; | |
2290 | #endif /* not S_IFLNK */ | |
2291 | } | |
2292 | ||
a253bab2 JB |
2293 | #ifdef SOLARIS_BROKEN_ACCESS |
2294 | /* In Solaris 2.1, the readonly-ness of the filesystem is not | |
2295 | considered by the access system call. This is Sun's bug, but we | |
2296 | still have to make Emacs work. */ | |
2297 | ||
2298 | #include <sys/statvfs.h> | |
2299 | ||
2300 | static int | |
2301 | ro_fsys (path) | |
2302 | char *path; | |
2303 | { | |
2304 | struct statvfs statvfsb; | |
2305 | ||
2306 | if (statvfs(path, &statvfsb)) | |
2307 | return 1; /* error from statvfs, be conservative and say not wrtable */ | |
2308 | else | |
2309 | /* Otherwise, fsys is ro if bit is set. */ | |
2310 | return statvfsb.f_flag & ST_RDONLY; | |
2311 | } | |
2312 | #else | |
2313 | /* But on every other os, access has already done the right thing. */ | |
2314 | #define ro_fsys(path) 0 | |
2315 | #endif | |
2316 | ||
570d7624 JB |
2317 | /* Having this before file-symlink-p mysteriously caused it to be forgotten |
2318 | on the RT/PC. */ | |
2319 | DEFUN ("file-writable-p", Ffile_writable_p, Sfile_writable_p, 1, 1, 0, | |
2320 | "Return t if file FILENAME can be written or created by you.") | |
2321 | (filename) | |
2322 | Lisp_Object filename; | |
2323 | { | |
2324 | Lisp_Object abspath, dir; | |
32f4334d | 2325 | Lisp_Object handler; |
570d7624 JB |
2326 | |
2327 | CHECK_STRING (filename, 0); | |
2328 | abspath = Fexpand_file_name (filename, Qnil); | |
32f4334d RS |
2329 | |
2330 | /* If the file name has special constructs in it, | |
2331 | call the corresponding file handler. */ | |
49307295 | 2332 | handler = Ffind_file_name_handler (abspath, Qfile_writable_p); |
32f4334d | 2333 | if (!NILP (handler)) |
09121adc | 2334 | return call2 (handler, Qfile_writable_p, abspath); |
32f4334d | 2335 | |
570d7624 | 2336 | if (access (XSTRING (abspath)->data, 0) >= 0) |
a253bab2 | 2337 | return ((access (XSTRING (abspath)->data, 2) >= 0 |
e7c7295c | 2338 | && ! ro_fsys ((char *) XSTRING (abspath)->data)) |
a253bab2 | 2339 | ? Qt : Qnil); |
570d7624 JB |
2340 | dir = Ffile_name_directory (abspath); |
2341 | #ifdef VMS | |
265a9e55 | 2342 | if (!NILP (dir)) |
570d7624 JB |
2343 | dir = Fdirectory_file_name (dir); |
2344 | #endif /* VMS */ | |
4c3c22f3 RS |
2345 | #ifdef MSDOS |
2346 | if (!NILP (dir)) | |
2347 | dir = Fdirectory_file_name (dir); | |
2348 | #endif /* MSDOS */ | |
a253bab2 | 2349 | return ((access (!NILP (dir) ? (char *) XSTRING (dir)->data : "", 2) >= 0 |
e7c7295c | 2350 | && ! ro_fsys ((char *) XSTRING (dir)->data)) |
570d7624 JB |
2351 | ? Qt : Qnil); |
2352 | } | |
2353 | ||
2354 | DEFUN ("file-directory-p", Ffile_directory_p, Sfile_directory_p, 1, 1, 0, | |
2355 | "Return t if file FILENAME is the name of a directory as a file.\n\ | |
2356 | A directory name spec may be given instead; then the value is t\n\ | |
2357 | if the directory so specified exists and really is a directory.") | |
2358 | (filename) | |
2359 | Lisp_Object filename; | |
2360 | { | |
2361 | register Lisp_Object abspath; | |
2362 | struct stat st; | |
32f4334d | 2363 | Lisp_Object handler; |
570d7624 JB |
2364 | |
2365 | abspath = expand_and_dir_to_file (filename, current_buffer->directory); | |
2366 | ||
32f4334d RS |
2367 | /* If the file name has special constructs in it, |
2368 | call the corresponding file handler. */ | |
49307295 | 2369 | handler = Ffind_file_name_handler (abspath, Qfile_directory_p); |
32f4334d | 2370 | if (!NILP (handler)) |
09121adc | 2371 | return call2 (handler, Qfile_directory_p, abspath); |
32f4334d | 2372 | |
570d7624 JB |
2373 | if (stat (XSTRING (abspath)->data, &st) < 0) |
2374 | return Qnil; | |
2375 | return (st.st_mode & S_IFMT) == S_IFDIR ? Qt : Qnil; | |
2376 | } | |
2377 | ||
b72dea2a JB |
2378 | DEFUN ("file-accessible-directory-p", Ffile_accessible_directory_p, Sfile_accessible_directory_p, 1, 1, 0, |
2379 | "Return t if file FILENAME is the name of a directory as a file,\n\ | |
2380 | and files in that directory can be opened by you. In order to use a\n\ | |
2381 | directory as a buffer's current directory, this predicate must return true.\n\ | |
2382 | A directory name spec may be given instead; then the value is t\n\ | |
2383 | if the directory so specified exists and really is a readable and\n\ | |
2384 | searchable directory.") | |
2385 | (filename) | |
2386 | Lisp_Object filename; | |
2387 | { | |
32f4334d | 2388 | Lisp_Object handler; |
1a04498e | 2389 | int tem; |
d26859eb | 2390 | struct gcpro gcpro1; |
32f4334d RS |
2391 | |
2392 | /* If the file name has special constructs in it, | |
2393 | call the corresponding file handler. */ | |
49307295 | 2394 | handler = Ffind_file_name_handler (filename, Qfile_accessible_directory_p); |
32f4334d RS |
2395 | if (!NILP (handler)) |
2396 | return call2 (handler, Qfile_accessible_directory_p, filename); | |
2397 | ||
d26859eb KH |
2398 | /* It's an unlikely combination, but yes we really do need to gcpro: |
2399 | Suppose that file-accessible-directory-p has no handler, but | |
2400 | file-directory-p does have a handler; this handler causes a GC which | |
2401 | relocates the string in `filename'; and finally file-directory-p | |
2402 | returns non-nil. Then we would end up passing a garbaged string | |
2403 | to file-executable-p. */ | |
2404 | GCPRO1 (filename); | |
1a04498e KH |
2405 | tem = (NILP (Ffile_directory_p (filename)) |
2406 | || NILP (Ffile_executable_p (filename))); | |
d26859eb | 2407 | UNGCPRO; |
1a04498e | 2408 | return tem ? Qnil : Qt; |
b72dea2a JB |
2409 | } |
2410 | ||
570d7624 JB |
2411 | DEFUN ("file-modes", Ffile_modes, Sfile_modes, 1, 1, 0, |
2412 | "Return mode bits of FILE, as an integer.") | |
2413 | (filename) | |
2414 | Lisp_Object filename; | |
2415 | { | |
2416 | Lisp_Object abspath; | |
2417 | struct stat st; | |
32f4334d | 2418 | Lisp_Object handler; |
570d7624 JB |
2419 | |
2420 | abspath = expand_and_dir_to_file (filename, current_buffer->directory); | |
2421 | ||
32f4334d RS |
2422 | /* If the file name has special constructs in it, |
2423 | call the corresponding file handler. */ | |
49307295 | 2424 | handler = Ffind_file_name_handler (abspath, Qfile_modes); |
32f4334d | 2425 | if (!NILP (handler)) |
09121adc | 2426 | return call2 (handler, Qfile_modes, abspath); |
32f4334d | 2427 | |
570d7624 JB |
2428 | if (stat (XSTRING (abspath)->data, &st) < 0) |
2429 | return Qnil; | |
3ace87e3 KH |
2430 | #ifdef MSDOS |
2431 | { | |
2432 | int len; | |
2433 | char *suffix; | |
2434 | if (S_ISREG (st.st_mode) | |
2435 | && (len = XSTRING (abspath)->size) >= 5 | |
2436 | && (stricmp ((suffix = XSTRING (abspath)->data + len-4), ".com") == 0 | |
2437 | || stricmp (suffix, ".exe") == 0 | |
2438 | || stricmp (suffix, ".bat") == 0)) | |
2439 | st.st_mode |= S_IEXEC; | |
2440 | } | |
2441 | #endif /* MSDOS */ | |
2442 | ||
570d7624 JB |
2443 | return make_number (st.st_mode & 07777); |
2444 | } | |
2445 | ||
2446 | DEFUN ("set-file-modes", Fset_file_modes, Sset_file_modes, 2, 2, 0, | |
2447 | "Set mode bits of FILE to MODE (an integer).\n\ | |
2448 | Only the 12 low bits of MODE are used.") | |
2449 | (filename, mode) | |
2450 | Lisp_Object filename, mode; | |
2451 | { | |
2452 | Lisp_Object abspath; | |
32f4334d | 2453 | Lisp_Object handler; |
570d7624 JB |
2454 | |
2455 | abspath = Fexpand_file_name (filename, current_buffer->directory); | |
2456 | CHECK_NUMBER (mode, 1); | |
2457 | ||
32f4334d RS |
2458 | /* If the file name has special constructs in it, |
2459 | call the corresponding file handler. */ | |
49307295 | 2460 | handler = Ffind_file_name_handler (abspath, Qset_file_modes); |
32f4334d | 2461 | if (!NILP (handler)) |
09121adc | 2462 | return call3 (handler, Qset_file_modes, abspath, mode); |
32f4334d | 2463 | |
570d7624 JB |
2464 | #ifndef APOLLO |
2465 | if (chmod (XSTRING (abspath)->data, XINT (mode)) < 0) | |
2466 | report_file_error ("Doing chmod", Fcons (abspath, Qnil)); | |
2467 | #else /* APOLLO */ | |
2468 | if (!egetenv ("USE_DOMAIN_ACLS")) | |
2469 | { | |
2470 | struct stat st; | |
2471 | struct timeval tvp[2]; | |
2472 | ||
2473 | /* chmod on apollo also change the file's modtime; need to save the | |
2474 | modtime and then restore it. */ | |
2475 | if (stat (XSTRING (abspath)->data, &st) < 0) | |
2476 | { | |
2477 | report_file_error ("Doing chmod", Fcons (abspath, Qnil)); | |
2478 | return (Qnil); | |
2479 | } | |
2480 | ||
2481 | if (chmod (XSTRING (abspath)->data, XINT (mode)) < 0) | |
2482 | report_file_error ("Doing chmod", Fcons (abspath, Qnil)); | |
2483 | ||
2484 | /* reset the old accessed and modified times. */ | |
2485 | tvp[0].tv_sec = st.st_atime + 1; /* +1 due to an Apollo roundoff bug */ | |
2486 | tvp[0].tv_usec = 0; | |
2487 | tvp[1].tv_sec = st.st_mtime + 1; /* +1 due to an Apollo roundoff bug */ | |
2488 | tvp[1].tv_usec = 0; | |
2489 | ||
2490 | if (utimes (XSTRING (abspath)->data, tvp) < 0) | |
2491 | report_file_error ("Doing utimes", Fcons (abspath, Qnil)); | |
2492 | } | |
2493 | #endif /* APOLLO */ | |
2494 | ||
2495 | return Qnil; | |
2496 | } | |
2497 | ||
c24e9a53 | 2498 | DEFUN ("set-default-file-modes", Fset_default_file_modes, Sset_default_file_modes, 1, 1, 0, |
5f85ea58 RS |
2499 | "Set the file permission bits for newly created files.\n\ |
2500 | The argument MODE should be an integer; only the low 9 bits are used.\n\ | |
36a8c287 | 2501 | This setting is inherited by subprocesses.") |
5f85ea58 RS |
2502 | (mode) |
2503 | Lisp_Object mode; | |
36a8c287 | 2504 | { |
5f85ea58 | 2505 | CHECK_NUMBER (mode, 0); |
36a8c287 | 2506 | |
5f85ea58 | 2507 | umask ((~ XINT (mode)) & 0777); |
36a8c287 JB |
2508 | |
2509 | return Qnil; | |
2510 | } | |
2511 | ||
c24e9a53 | 2512 | DEFUN ("default-file-modes", Fdefault_file_modes, Sdefault_file_modes, 0, 0, 0, |
5f85ea58 RS |
2513 | "Return the default file protection for created files.\n\ |
2514 | The value is an integer.") | |
36a8c287 JB |
2515 | () |
2516 | { | |
5f85ea58 RS |
2517 | int realmask; |
2518 | Lisp_Object value; | |
36a8c287 | 2519 | |
5f85ea58 RS |
2520 | realmask = umask (0); |
2521 | umask (realmask); | |
36a8c287 | 2522 | |
5f85ea58 RS |
2523 | XSET (value, Lisp_Int, (~ realmask) & 0777); |
2524 | return value; | |
36a8c287 JB |
2525 | } |
2526 | ||
85ffea93 RS |
2527 | #ifdef unix |
2528 | ||
2529 | DEFUN ("unix-sync", Funix_sync, Sunix_sync, 0, 0, "", | |
2530 | "Tell Unix to finish all pending disk updates.") | |
2531 | () | |
2532 | { | |
2533 | sync (); | |
2534 | return Qnil; | |
2535 | } | |
2536 | ||
2537 | #endif /* unix */ | |
2538 | ||
570d7624 JB |
2539 | DEFUN ("file-newer-than-file-p", Ffile_newer_than_file_p, Sfile_newer_than_file_p, 2, 2, 0, |
2540 | "Return t if file FILE1 is newer than file FILE2.\n\ | |
2541 | If FILE1 does not exist, the answer is nil;\n\ | |
2542 | otherwise, if FILE2 does not exist, the answer is t.") | |
2543 | (file1, file2) | |
2544 | Lisp_Object file1, file2; | |
2545 | { | |
32f4334d | 2546 | Lisp_Object abspath1, abspath2; |
570d7624 JB |
2547 | struct stat st; |
2548 | int mtime1; | |
32f4334d | 2549 | Lisp_Object handler; |
09121adc | 2550 | struct gcpro gcpro1, gcpro2; |
570d7624 JB |
2551 | |
2552 | CHECK_STRING (file1, 0); | |
2553 | CHECK_STRING (file2, 0); | |
2554 | ||
09121adc RS |
2555 | abspath1 = Qnil; |
2556 | GCPRO2 (abspath1, file2); | |
32f4334d RS |
2557 | abspath1 = expand_and_dir_to_file (file1, current_buffer->directory); |
2558 | abspath2 = expand_and_dir_to_file (file2, current_buffer->directory); | |
09121adc | 2559 | UNGCPRO; |
570d7624 | 2560 | |
32f4334d RS |
2561 | /* If the file name has special constructs in it, |
2562 | call the corresponding file handler. */ | |
49307295 | 2563 | handler = Ffind_file_name_handler (abspath1, Qfile_newer_than_file_p); |
51cf6d37 | 2564 | if (NILP (handler)) |
49307295 | 2565 | handler = Ffind_file_name_handler (abspath2, Qfile_newer_than_file_p); |
32f4334d RS |
2566 | if (!NILP (handler)) |
2567 | return call3 (handler, Qfile_newer_than_file_p, abspath1, abspath2); | |
2568 | ||
2569 | if (stat (XSTRING (abspath1)->data, &st) < 0) | |
570d7624 JB |
2570 | return Qnil; |
2571 | ||
2572 | mtime1 = st.st_mtime; | |
2573 | ||
32f4334d | 2574 | if (stat (XSTRING (abspath2)->data, &st) < 0) |
570d7624 JB |
2575 | return Qt; |
2576 | ||
2577 | return (mtime1 > st.st_mtime) ? Qt : Qnil; | |
2578 | } | |
2579 | \f | |
4c3c22f3 RS |
2580 | #ifdef MSDOS |
2581 | Lisp_Object Qfind_buffer_file_type; | |
2582 | #endif | |
2583 | ||
570d7624 | 2584 | DEFUN ("insert-file-contents", Finsert_file_contents, Sinsert_file_contents, |
3d0387c0 | 2585 | 1, 5, 0, |
570d7624 | 2586 | "Insert contents of file FILENAME after point.\n\ |
7fded690 | 2587 | Returns list of absolute file name and length of data inserted.\n\ |
570d7624 JB |
2588 | If second argument VISIT is non-nil, the buffer's visited filename\n\ |
2589 | and last save file modtime are set, and it is marked unmodified.\n\ | |
2590 | If visiting and the file does not exist, visiting is completed\n\ | |
7fded690 JB |
2591 | before the error is signaled.\n\n\ |
2592 | The optional third and fourth arguments BEG and END\n\ | |
2593 | specify what portion of the file to insert.\n\ | |
3d0387c0 RS |
2594 | If VISIT is non-nil, BEG and END must be nil.\n\ |
2595 | If optional fifth argument REPLACE is non-nil,\n\ | |
2596 | it means replace the current buffer contents (in the accessible portion)\n\ | |
2597 | with the file contents. This is better than simply deleting and inserting\n\ | |
2598 | the whole thing because (1) it preserves some marker positions\n\ | |
2599 | and (2) it puts less data in the undo list.") | |
2600 | (filename, visit, beg, end, replace) | |
2601 | Lisp_Object filename, visit, beg, end, replace; | |
570d7624 JB |
2602 | { |
2603 | struct stat st; | |
2604 | register int fd; | |
2605 | register int inserted = 0; | |
2606 | register int how_much; | |
2607 | int count = specpdl_ptr - specpdl; | |
1a04498e | 2608 | struct gcpro gcpro1, gcpro2, gcpro3; |
d6a3cc15 RS |
2609 | Lisp_Object handler, val, insval; |
2610 | Lisp_Object p; | |
7fded690 | 2611 | int total; |
32f4334d RS |
2612 | |
2613 | val = Qnil; | |
d6a3cc15 | 2614 | p = Qnil; |
32f4334d | 2615 | |
1a04498e | 2616 | GCPRO3 (filename, val, p); |
265a9e55 | 2617 | if (!NILP (current_buffer->read_only)) |
570d7624 JB |
2618 | Fbarf_if_buffer_read_only(); |
2619 | ||
2620 | CHECK_STRING (filename, 0); | |
2621 | filename = Fexpand_file_name (filename, Qnil); | |
2622 | ||
32f4334d RS |
2623 | /* If the file name has special constructs in it, |
2624 | call the corresponding file handler. */ | |
49307295 | 2625 | handler = Ffind_file_name_handler (filename, Qinsert_file_contents); |
32f4334d RS |
2626 | if (!NILP (handler)) |
2627 | { | |
3d0387c0 RS |
2628 | val = call6 (handler, Qinsert_file_contents, filename, |
2629 | visit, beg, end, replace); | |
32f4334d RS |
2630 | goto handled; |
2631 | } | |
2632 | ||
570d7624 JB |
2633 | fd = -1; |
2634 | ||
2635 | #ifndef APOLLO | |
99bc28f4 | 2636 | if (stat (XSTRING (filename)->data, &st) < 0) |
570d7624 | 2637 | #else |
4018b5ef | 2638 | if ((fd = open (XSTRING (filename)->data, O_RDONLY)) < 0 |
570d7624 JB |
2639 | || fstat (fd, &st) < 0) |
2640 | #endif /* not APOLLO */ | |
2641 | { | |
2642 | if (fd >= 0) close (fd); | |
99bc28f4 | 2643 | badopen: |
265a9e55 | 2644 | if (NILP (visit)) |
570d7624 JB |
2645 | report_file_error ("Opening input file", Fcons (filename, Qnil)); |
2646 | st.st_mtime = -1; | |
2647 | how_much = 0; | |
2648 | goto notfound; | |
2649 | } | |
2650 | ||
99bc28f4 | 2651 | #ifdef S_IFREG |
be53b411 JB |
2652 | /* This code will need to be changed in order to work on named |
2653 | pipes, and it's probably just not worth it. So we should at | |
2654 | least signal an error. */ | |
99bc28f4 | 2655 | if (!S_ISREG (st.st_mode)) |
be53b411 | 2656 | Fsignal (Qfile_error, |
99bc28f4 | 2657 | Fcons (build_string ("not a regular file"), |
be53b411 JB |
2658 | Fcons (filename, Qnil))); |
2659 | #endif | |
2660 | ||
99bc28f4 | 2661 | if (fd < 0) |
4018b5ef | 2662 | if ((fd = open (XSTRING (filename)->data, O_RDONLY)) < 0) |
99bc28f4 KH |
2663 | goto badopen; |
2664 | ||
2665 | /* Replacement should preserve point as it preserves markers. */ | |
2666 | if (!NILP (replace)) | |
2667 | record_unwind_protect (restore_point_unwind, Fpoint_marker ()); | |
2668 | ||
2669 | record_unwind_protect (close_file_unwind, make_number (fd)); | |
2670 | ||
570d7624 JB |
2671 | /* Supposedly happens on VMS. */ |
2672 | if (st.st_size < 0) | |
2673 | error ("File size is negative"); | |
be53b411 | 2674 | |
7fded690 JB |
2675 | if (!NILP (beg) || !NILP (end)) |
2676 | if (!NILP (visit)) | |
2677 | error ("Attempt to visit less than an entire file"); | |
2678 | ||
2679 | if (!NILP (beg)) | |
2680 | CHECK_NUMBER (beg, 0); | |
2681 | else | |
2682 | XFASTINT (beg) = 0; | |
2683 | ||
2684 | if (!NILP (end)) | |
2685 | CHECK_NUMBER (end, 0); | |
2686 | else | |
2687 | { | |
2688 | XSETINT (end, st.st_size); | |
2689 | if (XINT (end) != st.st_size) | |
2690 | error ("maximum buffer size exceeded"); | |
2691 | } | |
2692 | ||
3d0387c0 RS |
2693 | /* If requested, replace the accessible part of the buffer |
2694 | with the file contents. Avoid replacing text at the | |
2695 | beginning or end of the buffer that matches the file contents; | |
2696 | that preserves markers pointing to the unchanged parts. */ | |
e54d3b5d RS |
2697 | #ifdef MSDOS |
2698 | /* On MSDOS, replace mode doesn't really work, except for binary files, | |
2699 | and it's not worth supporting just for them. */ | |
2700 | if (!NILP (replace)) | |
2701 | { | |
2702 | replace = Qnil; | |
2703 | XFASTINT (beg) = 0; | |
2704 | XFASTINT (end) = st.st_size; | |
2705 | del_range_1 (BEGV, ZV, 0); | |
2706 | } | |
2707 | #else /* MSDOS */ | |
3d0387c0 RS |
2708 | if (!NILP (replace)) |
2709 | { | |
268466ed | 2710 | unsigned char buffer[1 << 14]; |
3d0387c0 RS |
2711 | int same_at_start = BEGV; |
2712 | int same_at_end = ZV; | |
9c28748f RS |
2713 | int overlap; |
2714 | ||
3d0387c0 RS |
2715 | immediate_quit = 1; |
2716 | QUIT; | |
2717 | /* Count how many chars at the start of the file | |
2718 | match the text at the beginning of the buffer. */ | |
2719 | while (1) | |
2720 | { | |
2721 | int nread, bufpos; | |
2722 | ||
2723 | nread = read (fd, buffer, sizeof buffer); | |
2724 | if (nread < 0) | |
2725 | error ("IO error reading %s: %s", | |
2726 | XSTRING (filename)->data, strerror (errno)); | |
2727 | else if (nread == 0) | |
2728 | break; | |
2729 | bufpos = 0; | |
2730 | while (bufpos < nread && same_at_start < ZV | |
2731 | && FETCH_CHAR (same_at_start) == buffer[bufpos]) | |
2732 | same_at_start++, bufpos++; | |
2733 | /* If we found a discrepancy, stop the scan. | |
2734 | Otherwise loop around and scan the next bufferfull. */ | |
2735 | if (bufpos != nread) | |
2736 | break; | |
2737 | } | |
2738 | immediate_quit = 0; | |
2739 | /* If the file matches the buffer completely, | |
2740 | there's no need to replace anything. */ | |
1051b3b3 | 2741 | if (same_at_start - BEGV == st.st_size) |
3d0387c0 RS |
2742 | { |
2743 | close (fd); | |
a1d2b64a | 2744 | specpdl_ptr--; |
1051b3b3 RS |
2745 | /* Truncate the buffer to the size of the file. */ |
2746 | del_range_1 (same_at_start, same_at_end, 0); | |
3d0387c0 RS |
2747 | goto handled; |
2748 | } | |
2749 | immediate_quit = 1; | |
2750 | QUIT; | |
2751 | /* Count how many chars at the end of the file | |
2752 | match the text at the end of the buffer. */ | |
2753 | while (1) | |
2754 | { | |
2755 | int total_read, nread, bufpos, curpos, trial; | |
2756 | ||
2757 | /* At what file position are we now scanning? */ | |
2758 | curpos = st.st_size - (ZV - same_at_end); | |
fc81fa9e KH |
2759 | /* If the entire file matches the buffer tail, stop the scan. */ |
2760 | if (curpos == 0) | |
2761 | break; | |
3d0387c0 RS |
2762 | /* How much can we scan in the next step? */ |
2763 | trial = min (curpos, sizeof buffer); | |
2764 | if (lseek (fd, curpos - trial, 0) < 0) | |
2765 | report_file_error ("Setting file position", | |
2766 | Fcons (filename, Qnil)); | |
2767 | ||
2768 | total_read = 0; | |
2769 | while (total_read < trial) | |
2770 | { | |
2771 | nread = read (fd, buffer + total_read, trial - total_read); | |
2772 | if (nread <= 0) | |
2773 | error ("IO error reading %s: %s", | |
2774 | XSTRING (filename)->data, strerror (errno)); | |
2775 | total_read += nread; | |
2776 | } | |
2777 | /* Scan this bufferfull from the end, comparing with | |
2778 | the Emacs buffer. */ | |
2779 | bufpos = total_read; | |
2780 | /* Compare with same_at_start to avoid counting some buffer text | |
2781 | as matching both at the file's beginning and at the end. */ | |
2782 | while (bufpos > 0 && same_at_end > same_at_start | |
2783 | && FETCH_CHAR (same_at_end - 1) == buffer[bufpos - 1]) | |
2784 | same_at_end--, bufpos--; | |
2785 | /* If we found a discrepancy, stop the scan. | |
2786 | Otherwise loop around and scan the preceding bufferfull. */ | |
2787 | if (bufpos != 0) | |
2788 | break; | |
2789 | } | |
2790 | immediate_quit = 0; | |
9c28748f RS |
2791 | |
2792 | /* Don't try to reuse the same piece of text twice. */ | |
2793 | overlap = same_at_start - BEGV - (same_at_end + st.st_size - ZV); | |
2794 | if (overlap > 0) | |
2795 | same_at_end += overlap; | |
2796 | ||
3d0387c0 RS |
2797 | /* Arrange to read only the nonmatching middle part of the file. */ |
2798 | XFASTINT (beg) = same_at_start - BEGV; | |
2799 | XFASTINT (end) = st.st_size - (ZV - same_at_end); | |
9c28748f | 2800 | |
251f623e | 2801 | del_range_1 (same_at_start, same_at_end, 0); |
a1d2b64a RS |
2802 | /* Insert from the file at the proper position. */ |
2803 | SET_PT (same_at_start); | |
3d0387c0 | 2804 | } |
e54d3b5d | 2805 | #endif /* MSDOS */ |
3d0387c0 | 2806 | |
7fded690 JB |
2807 | total = XINT (end) - XINT (beg); |
2808 | ||
570d7624 JB |
2809 | { |
2810 | register Lisp_Object temp; | |
2811 | ||
2812 | /* Make sure point-max won't overflow after this insertion. */ | |
7fded690 JB |
2813 | XSET (temp, Lisp_Int, total); |
2814 | if (total != XINT (temp)) | |
570d7624 JB |
2815 | error ("maximum buffer size exceeded"); |
2816 | } | |
2817 | ||
57d8d468 | 2818 | if (NILP (visit) && total > 0) |
570d7624 JB |
2819 | prepare_to_modify_buffer (point, point); |
2820 | ||
2821 | move_gap (point); | |
7fded690 JB |
2822 | if (GAP_SIZE < total) |
2823 | make_gap (total - GAP_SIZE); | |
2824 | ||
a1d2b64a | 2825 | if (XINT (beg) != 0 || !NILP (replace)) |
7fded690 JB |
2826 | { |
2827 | if (lseek (fd, XINT (beg), 0) < 0) | |
2828 | report_file_error ("Setting file position", Fcons (filename, Qnil)); | |
2829 | } | |
2830 | ||
a1d2b64a RS |
2831 | how_much = 0; |
2832 | while (inserted < total) | |
570d7624 | 2833 | { |
7fded690 | 2834 | int try = min (total - inserted, 64 << 10); |
b5148e85 RS |
2835 | int this; |
2836 | ||
2837 | /* Allow quitting out of the actual I/O. */ | |
2838 | immediate_quit = 1; | |
2839 | QUIT; | |
2840 | this = read (fd, &FETCH_CHAR (point + inserted - 1) + 1, try); | |
2841 | immediate_quit = 0; | |
570d7624 JB |
2842 | |
2843 | if (this <= 0) | |
2844 | { | |
2845 | how_much = this; | |
2846 | break; | |
2847 | } | |
2848 | ||
2849 | GPT += this; | |
2850 | GAP_SIZE -= this; | |
2851 | ZV += this; | |
2852 | Z += this; | |
2853 | inserted += this; | |
2854 | } | |
2855 | ||
4c3c22f3 RS |
2856 | #ifdef MSDOS |
2857 | /* Demacs 1.1.1 91/10/16 HIRANO Satoshi, MW July 1993 */ | |
2858 | /* Determine file type from name and remove LFs from CR-LFs if the file | |
2859 | is deemed to be a text file. */ | |
2860 | { | |
bf162ea8 RS |
2861 | current_buffer->buffer_file_type |
2862 | = call1 (Qfind_buffer_file_type, filename); | |
bf162ea8 | 2863 | if (NILP (current_buffer->buffer_file_type)) |
4c3c22f3 | 2864 | { |
a1d2b64a RS |
2865 | int reduced_size |
2866 | = inserted - crlf_to_lf (inserted, &FETCH_CHAR (point - 1) + 1); | |
4c3c22f3 RS |
2867 | ZV -= reduced_size; |
2868 | Z -= reduced_size; | |
2869 | GPT -= reduced_size; | |
2870 | GAP_SIZE += reduced_size; | |
2871 | inserted -= reduced_size; | |
2872 | } | |
2873 | } | |
2874 | #endif | |
2875 | ||
570d7624 | 2876 | if (inserted > 0) |
7d8451f1 RS |
2877 | { |
2878 | record_insert (point, inserted); | |
8d4e077b JA |
2879 | |
2880 | /* Only defined if Emacs is compiled with USE_TEXT_PROPERTIES */ | |
2881 | offset_intervals (current_buffer, point, inserted); | |
7d8451f1 RS |
2882 | MODIFF++; |
2883 | } | |
570d7624 JB |
2884 | |
2885 | close (fd); | |
2886 | ||
a1d2b64a RS |
2887 | /* Discard the unwind protect for closing the file. */ |
2888 | specpdl_ptr--; | |
570d7624 JB |
2889 | |
2890 | if (how_much < 0) | |
2891 | error ("IO error reading %s: %s", | |
ce97267f | 2892 | XSTRING (filename)->data, strerror (errno)); |
570d7624 JB |
2893 | |
2894 | notfound: | |
32f4334d | 2895 | handled: |
570d7624 | 2896 | |
265a9e55 | 2897 | if (!NILP (visit)) |
570d7624 | 2898 | { |
cfadd376 RS |
2899 | if (!EQ (current_buffer->undo_list, Qt)) |
2900 | current_buffer->undo_list = Qnil; | |
570d7624 JB |
2901 | #ifdef APOLLO |
2902 | stat (XSTRING (filename)->data, &st); | |
2903 | #endif | |
62bcf009 | 2904 | |
a7e82472 RS |
2905 | if (NILP (handler)) |
2906 | { | |
2907 | current_buffer->modtime = st.st_mtime; | |
2908 | current_buffer->filename = filename; | |
2909 | } | |
62bcf009 | 2910 | |
570d7624 JB |
2911 | current_buffer->save_modified = MODIFF; |
2912 | current_buffer->auto_save_modified = MODIFF; | |
2913 | XFASTINT (current_buffer->save_length) = Z - BEG; | |
2914 | #ifdef CLASH_DETECTION | |
32f4334d RS |
2915 | if (NILP (handler)) |
2916 | { | |
2917 | if (!NILP (current_buffer->filename)) | |
2918 | unlock_file (current_buffer->filename); | |
2919 | unlock_file (filename); | |
2920 | } | |
570d7624 | 2921 | #endif /* CLASH_DETECTION */ |
570d7624 | 2922 | /* If visiting nonexistent file, return nil. */ |
32f4334d | 2923 | if (current_buffer->modtime == -1) |
570d7624 JB |
2924 | report_file_error ("Opening input file", Fcons (filename, Qnil)); |
2925 | } | |
2926 | ||
62bcf009 | 2927 | if (inserted > 0 && NILP (visit) && total > 0) |
d2cad97d | 2928 | signal_after_change (point, 0, inserted); |
570d7624 | 2929 | |
d6a3cc15 RS |
2930 | if (inserted > 0) |
2931 | { | |
2932 | p = Vafter_insert_file_functions; | |
2933 | while (!NILP (p)) | |
2934 | { | |
2935 | insval = call1 (Fcar (p), make_number (inserted)); | |
2936 | if (!NILP (insval)) | |
2937 | { | |
2938 | CHECK_NUMBER (insval, 0); | |
2939 | inserted = XFASTINT (insval); | |
2940 | } | |
2941 | QUIT; | |
2942 | p = Fcdr (p); | |
2943 | } | |
2944 | } | |
2945 | ||
a1d2b64a RS |
2946 | if (NILP (val)) |
2947 | val = Fcons (filename, | |
2948 | Fcons (make_number (inserted), | |
2949 | Qnil)); | |
2950 | ||
2951 | RETURN_UNGCPRO (unbind_to (count, val)); | |
570d7624 | 2952 | } |
7fded690 | 2953 | \f |
d6a3cc15 RS |
2954 | static Lisp_Object build_annotations (); |
2955 | ||
6fc6f94b RS |
2956 | /* If build_annotations switched buffers, switch back to BUF. |
2957 | Kill the temporary buffer that was selected in the meantime. */ | |
2958 | ||
2959 | static Lisp_Object | |
2960 | build_annotations_unwind (buf) | |
2961 | Lisp_Object buf; | |
2962 | { | |
2963 | Lisp_Object tembuf; | |
2964 | ||
2965 | if (XBUFFER (buf) == current_buffer) | |
2966 | return Qnil; | |
2967 | tembuf = Fcurrent_buffer (); | |
2968 | Fset_buffer (buf); | |
2969 | Fkill_buffer (tembuf); | |
2970 | return Qnil; | |
2971 | } | |
2972 | ||
570d7624 JB |
2973 | DEFUN ("write-region", Fwrite_region, Swrite_region, 3, 5, |
2974 | "r\nFWrite region to file: ", | |
2975 | "Write current region into specified file.\n\ | |
2976 | When called from a program, takes three arguments:\n\ | |
2977 | START, END and FILENAME. START and END are buffer positions.\n\ | |
2978 | Optional fourth argument APPEND if non-nil means\n\ | |
2979 | append to existing file contents (if any).\n\ | |
2980 | Optional fifth argument VISIT if t means\n\ | |
2981 | set the last-save-file-modtime of buffer to this file's modtime\n\ | |
2982 | and mark buffer not modified.\n\ | |
3b7792ed RS |
2983 | If VISIT is a string, it is a second file name;\n\ |
2984 | the output goes to FILENAME, but the buffer is marked as visiting VISIT.\n\ | |
2985 | VISIT is also the file name to lock and unlock for clash detection.\n\ | |
1d386d28 RS |
2986 | If VISIT is neither t nor nil nor a string,\n\ |
2987 | that means do not print the \"Wrote file\" message.\n\ | |
570d7624 JB |
2988 | Kludgy feature: if START is a string, then that string is written\n\ |
2989 | to the file, instead of any buffer contents, and END is ignored.") | |
2990 | (start, end, filename, append, visit) | |
2991 | Lisp_Object start, end, filename, append, visit; | |
2992 | { | |
2993 | register int desc; | |
2994 | int failure; | |
2995 | int save_errno; | |
2996 | unsigned char *fn; | |
2997 | struct stat st; | |
c975dd7a | 2998 | int tem; |
570d7624 | 2999 | int count = specpdl_ptr - specpdl; |
6fc6f94b | 3000 | int count1; |
570d7624 JB |
3001 | #ifdef VMS |
3002 | unsigned char *fname = 0; /* If non-0, original filename (must rename) */ | |
3003 | #endif /* VMS */ | |
3eac9910 | 3004 | Lisp_Object handler; |
4ad827c5 | 3005 | Lisp_Object visit_file; |
d6a3cc15 RS |
3006 | Lisp_Object annotations; |
3007 | int visiting, quietly; | |
3b7792ed | 3008 | struct gcpro gcpro1, gcpro2, gcpro3, gcpro4; |
6fc6f94b | 3009 | struct buffer *given_buffer; |
4c3c22f3 RS |
3010 | #ifdef MSDOS |
3011 | int buffer_file_type | |
3012 | = NILP (current_buffer->buffer_file_type) ? O_TEXT : O_BINARY; | |
3013 | #endif | |
570d7624 | 3014 | |
561cb8e1 | 3015 | if (!NILP (start) && !STRINGP (start)) |
570d7624 JB |
3016 | validate_region (&start, &end); |
3017 | ||
1a04498e | 3018 | GCPRO2 (filename, visit); |
570d7624 | 3019 | filename = Fexpand_file_name (filename, Qnil); |
561cb8e1 | 3020 | if (STRINGP (visit)) |
e5176bae | 3021 | visit_file = Fexpand_file_name (visit, Qnil); |
4ad827c5 RS |
3022 | else |
3023 | visit_file = filename; | |
1a04498e | 3024 | UNGCPRO; |
4ad827c5 | 3025 | |
561cb8e1 | 3026 | visiting = (EQ (visit, Qt) || STRINGP (visit)); |
d6a3cc15 RS |
3027 | quietly = !NILP (visit); |
3028 | ||
3029 | annotations = Qnil; | |
3030 | ||
3031 | GCPRO4 (start, filename, annotations, visit_file); | |
570d7624 | 3032 | |
32f4334d RS |
3033 | /* If the file name has special constructs in it, |
3034 | call the corresponding file handler. */ | |
49307295 | 3035 | handler = Ffind_file_name_handler (filename, Qwrite_region); |
b56ad927 RS |
3036 | /* If FILENAME has no handler, see if VISIT has one. */ |
3037 | if (NILP (handler) && XTYPE (visit) == Lisp_String) | |
49307295 | 3038 | handler = Ffind_file_name_handler (visit, Qwrite_region); |
3eac9910 | 3039 | |
32f4334d RS |
3040 | if (!NILP (handler)) |
3041 | { | |
32f4334d | 3042 | Lisp_Object val; |
51cf6d37 RS |
3043 | val = call6 (handler, Qwrite_region, start, end, |
3044 | filename, append, visit); | |
32f4334d | 3045 | |
d6a3cc15 | 3046 | if (visiting) |
32f4334d | 3047 | { |
32f4334d RS |
3048 | current_buffer->save_modified = MODIFF; |
3049 | XFASTINT (current_buffer->save_length) = Z - BEG; | |
3b7792ed | 3050 | current_buffer->filename = visit_file; |
32f4334d | 3051 | } |
09121adc | 3052 | UNGCPRO; |
32f4334d RS |
3053 | return val; |
3054 | } | |
3055 | ||
561cb8e1 RS |
3056 | /* Special kludge to simplify auto-saving. */ |
3057 | if (NILP (start)) | |
3058 | { | |
3059 | XFASTINT (start) = BEG; | |
3060 | XFASTINT (end) = Z; | |
3061 | } | |
3062 | ||
6fc6f94b RS |
3063 | record_unwind_protect (build_annotations_unwind, Fcurrent_buffer ()); |
3064 | count1 = specpdl_ptr - specpdl; | |
3065 | ||
3066 | given_buffer = current_buffer; | |
d6a3cc15 | 3067 | annotations = build_annotations (start, end); |
6fc6f94b RS |
3068 | if (current_buffer != given_buffer) |
3069 | { | |
3070 | start = BEGV; | |
3071 | end = ZV; | |
3072 | } | |
d6a3cc15 | 3073 | |
570d7624 JB |
3074 | #ifdef CLASH_DETECTION |
3075 | if (!auto_saving) | |
3b7792ed | 3076 | lock_file (visit_file); |
570d7624 JB |
3077 | #endif /* CLASH_DETECTION */ |
3078 | ||
09121adc | 3079 | fn = XSTRING (filename)->data; |
570d7624 | 3080 | desc = -1; |
265a9e55 | 3081 | if (!NILP (append)) |
4c3c22f3 RS |
3082 | #ifdef MSDOS |
3083 | desc = open (fn, O_WRONLY | buffer_file_type); | |
3084 | #else | |
570d7624 | 3085 | desc = open (fn, O_WRONLY); |
4c3c22f3 | 3086 | #endif |
570d7624 JB |
3087 | |
3088 | if (desc < 0) | |
3089 | #ifdef VMS | |
3090 | if (auto_saving) /* Overwrite any previous version of autosave file */ | |
3091 | { | |
3092 | vms_truncate (fn); /* if fn exists, truncate to zero length */ | |
3093 | desc = open (fn, O_RDWR); | |
3094 | if (desc < 0) | |
561cb8e1 | 3095 | desc = creat_copy_attrs (STRINGP (current_buffer->filename) |
b72dea2a JB |
3096 | ? XSTRING (current_buffer->filename)->data : 0, |
3097 | fn); | |
570d7624 JB |
3098 | } |
3099 | else /* Write to temporary name and rename if no errors */ | |
3100 | { | |
3101 | Lisp_Object temp_name; | |
3102 | temp_name = Ffile_name_directory (filename); | |
3103 | ||
265a9e55 | 3104 | if (!NILP (temp_name)) |
570d7624 JB |
3105 | { |
3106 | temp_name = Fmake_temp_name (concat2 (temp_name, | |
3107 | build_string ("$$SAVE$$"))); | |
3108 | fname = XSTRING (filename)->data; | |
3109 | fn = XSTRING (temp_name)->data; | |
3110 | desc = creat_copy_attrs (fname, fn); | |
3111 | if (desc < 0) | |
3112 | { | |
3113 | /* If we can't open the temporary file, try creating a new | |
3114 | version of the original file. VMS "creat" creates a | |
3115 | new version rather than truncating an existing file. */ | |
3116 | fn = fname; | |
3117 | fname = 0; | |
3118 | desc = creat (fn, 0666); | |
3119 | #if 0 /* This can clobber an existing file and fail to replace it, | |
3120 | if the user runs out of space. */ | |
3121 | if (desc < 0) | |
3122 | { | |
3123 | /* We can't make a new version; | |
3124 | try to truncate and rewrite existing version if any. */ | |
3125 | vms_truncate (fn); | |
3126 | desc = open (fn, O_RDWR); | |
3127 | } | |
3128 | #endif | |
3129 | } | |
3130 | } | |
3131 | else | |
3132 | desc = creat (fn, 0666); | |
3133 | } | |
3134 | #else /* not VMS */ | |
4c3c22f3 RS |
3135 | #ifdef MSDOS |
3136 | desc = open (fn, | |
3137 | O_WRONLY | O_TRUNC | O_CREAT | buffer_file_type, | |
3138 | S_IREAD | S_IWRITE); | |
3139 | #else /* not MSDOS */ | |
570d7624 | 3140 | desc = creat (fn, auto_saving ? auto_save_mode_bits : 0666); |
4c3c22f3 | 3141 | #endif /* not MSDOS */ |
570d7624 JB |
3142 | #endif /* not VMS */ |
3143 | ||
09121adc RS |
3144 | UNGCPRO; |
3145 | ||
570d7624 JB |
3146 | if (desc < 0) |
3147 | { | |
3148 | #ifdef CLASH_DETECTION | |
3149 | save_errno = errno; | |
3b7792ed | 3150 | if (!auto_saving) unlock_file (visit_file); |
570d7624 JB |
3151 | errno = save_errno; |
3152 | #endif /* CLASH_DETECTION */ | |
3153 | report_file_error ("Opening output file", Fcons (filename, Qnil)); | |
3154 | } | |
3155 | ||
3156 | record_unwind_protect (close_file_unwind, make_number (desc)); | |
3157 | ||
265a9e55 | 3158 | if (!NILP (append)) |
570d7624 JB |
3159 | if (lseek (desc, 0, 2) < 0) |
3160 | { | |
3161 | #ifdef CLASH_DETECTION | |
3b7792ed | 3162 | if (!auto_saving) unlock_file (visit_file); |
570d7624 JB |
3163 | #endif /* CLASH_DETECTION */ |
3164 | report_file_error ("Lseek error", Fcons (filename, Qnil)); | |
3165 | } | |
3166 | ||
3167 | #ifdef VMS | |
3168 | /* | |
3169 | * Kludge Warning: The VMS C RTL likes to insert carriage returns | |
3170 | * if we do writes that don't end with a carriage return. Furthermore | |
3171 | * it cannot handle writes of more then 16K. The modified | |
3172 | * version of "sys_write" in SYSDEP.C (see comment there) copes with | |
3173 | * this EXCEPT for the last record (iff it doesn't end with a carriage | |
3174 | * return). This implies that if your buffer doesn't end with a carriage | |
3175 | * return, you get one free... tough. However it also means that if | |
3176 | * we make two calls to sys_write (a la the following code) you can | |
3177 | * get one at the gap as well. The easiest way to fix this (honest) | |
3178 | * is to move the gap to the next newline (or the end of the buffer). | |
3179 | * Thus this change. | |
3180 | * | |
3181 | * Yech! | |
3182 | */ | |
3183 | if (GPT > BEG && GPT_ADDR[-1] != '\n') | |
3184 | move_gap (find_next_newline (GPT, 1)); | |
3185 | #endif | |
3186 | ||
3187 | failure = 0; | |
3188 | immediate_quit = 1; | |
3189 | ||
561cb8e1 | 3190 | if (STRINGP (start)) |
570d7624 | 3191 | { |
d6a3cc15 RS |
3192 | failure = 0 > a_write (desc, XSTRING (start)->data, |
3193 | XSTRING (start)->size, 0, &annotations); | |
570d7624 JB |
3194 | save_errno = errno; |
3195 | } | |
3196 | else if (XINT (start) != XINT (end)) | |
3197 | { | |
c975dd7a | 3198 | int nwritten = 0; |
570d7624 JB |
3199 | if (XINT (start) < GPT) |
3200 | { | |
3201 | register int end1 = XINT (end); | |
3202 | tem = XINT (start); | |
d6a3cc15 | 3203 | failure = 0 > a_write (desc, &FETCH_CHAR (tem), |
c975dd7a RS |
3204 | min (GPT, end1) - tem, tem, &annotations); |
3205 | nwritten += min (GPT, end1) - tem; | |
570d7624 JB |
3206 | save_errno = errno; |
3207 | } | |
3208 | ||
3209 | if (XINT (end) > GPT && !failure) | |
3210 | { | |
3211 | tem = XINT (start); | |
3212 | tem = max (tem, GPT); | |
d6a3cc15 | 3213 | failure = 0 > a_write (desc, &FETCH_CHAR (tem), XINT (end) - tem, |
c975dd7a RS |
3214 | tem, &annotations); |
3215 | nwritten += XINT (end) - tem; | |
d6a3cc15 RS |
3216 | save_errno = errno; |
3217 | } | |
c975dd7a RS |
3218 | |
3219 | if (nwritten == 0) | |
d6a3cc15 RS |
3220 | { |
3221 | /* If file was empty, still need to write the annotations */ | |
c975dd7a | 3222 | failure = 0 > a_write (desc, "", 0, XINT (start), &annotations); |
570d7624 JB |
3223 | save_errno = errno; |
3224 | } | |
3225 | } | |
3226 | ||
3227 | immediate_quit = 0; | |
3228 | ||
6e23c83e | 3229 | #ifdef HAVE_FSYNC |
570d7624 JB |
3230 | /* Note fsync appears to change the modtime on BSD4.2 (both vax and sun). |
3231 | Disk full in NFS may be reported here. */ | |
1daffa1c RS |
3232 | /* mib says that closing the file will try to write as fast as NFS can do |
3233 | it, and that means the fsync here is not crucial for autosave files. */ | |
3234 | if (!auto_saving && fsync (desc) < 0) | |
570d7624 | 3235 | failure = 1, save_errno = errno; |
570d7624 JB |
3236 | #endif |
3237 | ||
3238 | /* Spurious "file has changed on disk" warnings have been | |
3239 | observed on Suns as well. | |
3240 | It seems that `close' can change the modtime, under nfs. | |
3241 | ||
3242 | (This has supposedly been fixed in Sunos 4, | |
3243 | but who knows about all the other machines with NFS?) */ | |
3244 | #if 0 | |
3245 | ||
3246 | /* On VMS and APOLLO, must do the stat after the close | |
3247 | since closing changes the modtime. */ | |
3248 | #ifndef VMS | |
3249 | #ifndef APOLLO | |
3250 | /* Recall that #if defined does not work on VMS. */ | |
3251 | #define FOO | |
3252 | fstat (desc, &st); | |
3253 | #endif | |
3254 | #endif | |
3255 | #endif | |
3256 | ||
3257 | /* NFS can report a write failure now. */ | |
3258 | if (close (desc) < 0) | |
3259 | failure = 1, save_errno = errno; | |
3260 | ||
3261 | #ifdef VMS | |
3262 | /* If we wrote to a temporary name and had no errors, rename to real name. */ | |
3263 | if (fname) | |
3264 | { | |
3265 | if (!failure) | |
3266 | failure = (rename (fn, fname) != 0), save_errno = errno; | |
3267 | fn = fname; | |
3268 | } | |
3269 | #endif /* VMS */ | |
3270 | ||
3271 | #ifndef FOO | |
3272 | stat (fn, &st); | |
3273 | #endif | |
6fc6f94b RS |
3274 | /* Discard the unwind protect for close_file_unwind. */ |
3275 | specpdl_ptr = specpdl + count1; | |
3276 | /* Restore the original current buffer. */ | |
98295b48 | 3277 | visit_file = unbind_to (count, visit_file); |
570d7624 JB |
3278 | |
3279 | #ifdef CLASH_DETECTION | |
3280 | if (!auto_saving) | |
3b7792ed | 3281 | unlock_file (visit_file); |
570d7624 JB |
3282 | #endif /* CLASH_DETECTION */ |
3283 | ||
3284 | /* Do this before reporting IO error | |
3285 | to avoid a "file has changed on disk" warning on | |
3286 | next attempt to save. */ | |
d6a3cc15 | 3287 | if (visiting) |
570d7624 JB |
3288 | current_buffer->modtime = st.st_mtime; |
3289 | ||
3290 | if (failure) | |
ce97267f | 3291 | error ("IO error writing %s: %s", fn, strerror (save_errno)); |
570d7624 | 3292 | |
d6a3cc15 | 3293 | if (visiting) |
570d7624 JB |
3294 | { |
3295 | current_buffer->save_modified = MODIFF; | |
3296 | XFASTINT (current_buffer->save_length) = Z - BEG; | |
3b7792ed | 3297 | current_buffer->filename = visit_file; |
f4226e89 | 3298 | update_mode_lines++; |
570d7624 | 3299 | } |
d6a3cc15 | 3300 | else if (quietly) |
570d7624 JB |
3301 | return Qnil; |
3302 | ||
3303 | if (!auto_saving) | |
3b7792ed | 3304 | message ("Wrote %s", XSTRING (visit_file)->data); |
570d7624 JB |
3305 | |
3306 | return Qnil; | |
3307 | } | |
3308 | ||
d6a3cc15 RS |
3309 | Lisp_Object merge (); |
3310 | ||
3311 | DEFUN ("car-less-than-car", Fcar_less_than_car, Scar_less_than_car, 2, 2, 0, | |
2ba0ccff | 3312 | "Return t if (car A) is numerically less than (car B).") |
d6a3cc15 RS |
3313 | (a, b) |
3314 | Lisp_Object a, b; | |
3315 | { | |
3316 | return Flss (Fcar (a), Fcar (b)); | |
3317 | } | |
3318 | ||
3319 | /* Build the complete list of annotations appropriate for writing out | |
3320 | the text between START and END, by calling all the functions in | |
6fc6f94b RS |
3321 | write-region-annotate-functions and merging the lists they return. |
3322 | If one of these functions switches to a different buffer, we assume | |
3323 | that buffer contains altered text. Therefore, the caller must | |
3324 | make sure to restore the current buffer in all cases, | |
3325 | as save-excursion would do. */ | |
d6a3cc15 RS |
3326 | |
3327 | static Lisp_Object | |
3328 | build_annotations (start, end) | |
3329 | Lisp_Object start, end; | |
3330 | { | |
3331 | Lisp_Object annotations; | |
3332 | Lisp_Object p, res; | |
3333 | struct gcpro gcpro1, gcpro2; | |
3334 | ||
3335 | annotations = Qnil; | |
3336 | p = Vwrite_region_annotate_functions; | |
3337 | GCPRO2 (annotations, p); | |
3338 | while (!NILP (p)) | |
3339 | { | |
6fc6f94b RS |
3340 | struct buffer *given_buffer = current_buffer; |
3341 | Vwrite_region_annotations_so_far = annotations; | |
d6a3cc15 | 3342 | res = call2 (Fcar (p), start, end); |
6fc6f94b RS |
3343 | /* If the function makes a different buffer current, |
3344 | assume that means this buffer contains altered text to be output. | |
3345 | Reset START and END from the buffer bounds | |
3346 | and discard all previous annotations because they should have | |
3347 | been dealt with by this function. */ | |
3348 | if (current_buffer != given_buffer) | |
3349 | { | |
6fc6f94b RS |
3350 | start = BEGV; |
3351 | end = ZV; | |
3352 | annotations = Qnil; | |
3353 | } | |
d6a3cc15 RS |
3354 | Flength (res); /* Check basic validity of return value */ |
3355 | annotations = merge (annotations, res, Qcar_less_than_car); | |
3356 | p = Fcdr (p); | |
3357 | } | |
3358 | UNGCPRO; | |
3359 | return annotations; | |
3360 | } | |
3361 | ||
3362 | /* Write to descriptor DESC the LEN characters starting at ADDR, | |
3363 | assuming they start at position POS in the buffer. | |
3364 | Intersperse with them the annotations from *ANNOT | |
3365 | (those which fall within the range of positions POS to POS + LEN), | |
3366 | each at its appropriate position. | |
3367 | ||
3368 | Modify *ANNOT by discarding elements as we output them. | |
3369 | The return value is negative in case of system call failure. */ | |
3370 | ||
3371 | int | |
3372 | a_write (desc, addr, len, pos, annot) | |
3373 | int desc; | |
3374 | register char *addr; | |
3375 | register int len; | |
3376 | int pos; | |
3377 | Lisp_Object *annot; | |
3378 | { | |
3379 | Lisp_Object tem; | |
3380 | int nextpos; | |
3381 | int lastpos = pos + len; | |
3382 | ||
eb15aa18 | 3383 | while (NILP (*annot) || CONSP (*annot)) |
d6a3cc15 RS |
3384 | { |
3385 | tem = Fcar_safe (Fcar (*annot)); | |
3386 | if (INTEGERP (tem) && XINT (tem) >= pos && XFASTINT (tem) <= lastpos) | |
3387 | nextpos = XFASTINT (tem); | |
3388 | else | |
3389 | return e_write (desc, addr, lastpos - pos); | |
3390 | if (nextpos > pos) | |
3391 | { | |
3392 | if (0 > e_write (desc, addr, nextpos - pos)) | |
3393 | return -1; | |
3394 | addr += nextpos - pos; | |
3395 | pos = nextpos; | |
3396 | } | |
3397 | tem = Fcdr (Fcar (*annot)); | |
3398 | if (STRINGP (tem)) | |
3399 | { | |
3400 | if (0 > e_write (desc, XSTRING (tem)->data, XSTRING (tem)->size)) | |
3401 | return -1; | |
3402 | } | |
3403 | *annot = Fcdr (*annot); | |
3404 | } | |
3405 | } | |
3406 | ||
570d7624 JB |
3407 | int |
3408 | e_write (desc, addr, len) | |
3409 | int desc; | |
3410 | register char *addr; | |
3411 | register int len; | |
3412 | { | |
3413 | char buf[16 * 1024]; | |
3414 | register char *p, *end; | |
3415 | ||
3416 | if (!EQ (current_buffer->selective_display, Qt)) | |
3417 | return write (desc, addr, len) - len; | |
3418 | else | |
3419 | { | |
3420 | p = buf; | |
3421 | end = p + sizeof buf; | |
3422 | while (len--) | |
3423 | { | |
3424 | if (p == end) | |
3425 | { | |
3426 | if (write (desc, buf, sizeof buf) != sizeof buf) | |
3427 | return -1; | |
3428 | p = buf; | |
3429 | } | |
3430 | *p = *addr++; | |
3431 | if (*p++ == '\015') | |
3432 | p[-1] = '\n'; | |
3433 | } | |
3434 | if (p != buf) | |
3435 | if (write (desc, buf, p - buf) != p - buf) | |
3436 | return -1; | |
3437 | } | |
3438 | return 0; | |
3439 | } | |
3440 | ||
3441 | DEFUN ("verify-visited-file-modtime", Fverify_visited_file_modtime, | |
3442 | Sverify_visited_file_modtime, 1, 1, 0, | |
3443 | "Return t if last mod time of BUF's visited file matches what BUF records.\n\ | |
3444 | This means that the file has not been changed since it was visited or saved.") | |
3445 | (buf) | |
3446 | Lisp_Object buf; | |
3447 | { | |
3448 | struct buffer *b; | |
3449 | struct stat st; | |
32f4334d | 3450 | Lisp_Object handler; |
570d7624 JB |
3451 | |
3452 | CHECK_BUFFER (buf, 0); | |
3453 | b = XBUFFER (buf); | |
3454 | ||
3455 | if (XTYPE (b->filename) != Lisp_String) return Qt; | |
3456 | if (b->modtime == 0) return Qt; | |
3457 | ||
32f4334d RS |
3458 | /* If the file name has special constructs in it, |
3459 | call the corresponding file handler. */ | |
49307295 KH |
3460 | handler = Ffind_file_name_handler (b->filename, |
3461 | Qverify_visited_file_modtime); | |
32f4334d | 3462 | if (!NILP (handler)) |
09121adc | 3463 | return call2 (handler, Qverify_visited_file_modtime, buf); |
32f4334d | 3464 | |
570d7624 JB |
3465 | if (stat (XSTRING (b->filename)->data, &st) < 0) |
3466 | { | |
3467 | /* If the file doesn't exist now and didn't exist before, | |
3468 | we say that it isn't modified, provided the error is a tame one. */ | |
3469 | if (errno == ENOENT || errno == EACCES || errno == ENOTDIR) | |
3470 | st.st_mtime = -1; | |
3471 | else | |
3472 | st.st_mtime = 0; | |
3473 | } | |
3474 | if (st.st_mtime == b->modtime | |
3475 | /* If both are positive, accept them if they are off by one second. */ | |
3476 | || (st.st_mtime > 0 && b->modtime > 0 | |
3477 | && (st.st_mtime == b->modtime + 1 | |
3478 | || st.st_mtime == b->modtime - 1))) | |
3479 | return Qt; | |
3480 | return Qnil; | |
3481 | } | |
3482 | ||
3483 | DEFUN ("clear-visited-file-modtime", Fclear_visited_file_modtime, | |
3484 | Sclear_visited_file_modtime, 0, 0, 0, | |
3485 | "Clear out records of last mod time of visited file.\n\ | |
3486 | Next attempt to save will certainly not complain of a discrepancy.") | |
3487 | () | |
3488 | { | |
3489 | current_buffer->modtime = 0; | |
3490 | return Qnil; | |
3491 | } | |
3492 | ||
f5d5eccf RS |
3493 | DEFUN ("visited-file-modtime", Fvisited_file_modtime, |
3494 | Svisited_file_modtime, 0, 0, 0, | |
3495 | "Return the current buffer's recorded visited file modification time.\n\ | |
3496 | The value is a list of the form (HIGH . LOW), like the time values\n\ | |
3497 | that `file-attributes' returns.") | |
3498 | () | |
3499 | { | |
3500 | return long_to_cons (current_buffer->modtime); | |
3501 | } | |
3502 | ||
570d7624 | 3503 | DEFUN ("set-visited-file-modtime", Fset_visited_file_modtime, |
f5d5eccf | 3504 | Sset_visited_file_modtime, 0, 1, 0, |
570d7624 JB |
3505 | "Update buffer's recorded modification time from the visited file's time.\n\ |
3506 | Useful if the buffer was not read from the file normally\n\ | |
f5d5eccf RS |
3507 | or if the file itself has been changed for some known benign reason.\n\ |
3508 | An argument specifies the modification time value to use\n\ | |
3509 | \(instead of that of the visited file), in the form of a list\n\ | |
3510 | \(HIGH . LOW) or (HIGH LOW).") | |
3511 | (time_list) | |
3512 | Lisp_Object time_list; | |
570d7624 | 3513 | { |
f5d5eccf RS |
3514 | if (!NILP (time_list)) |
3515 | current_buffer->modtime = cons_to_long (time_list); | |
3516 | else | |
3517 | { | |
3518 | register Lisp_Object filename; | |
3519 | struct stat st; | |
3520 | Lisp_Object handler; | |
570d7624 | 3521 | |
f5d5eccf | 3522 | filename = Fexpand_file_name (current_buffer->filename, Qnil); |
32f4334d | 3523 | |
f5d5eccf RS |
3524 | /* If the file name has special constructs in it, |
3525 | call the corresponding file handler. */ | |
49307295 | 3526 | handler = Ffind_file_name_handler (filename, Qset_visited_file_modtime); |
f5d5eccf | 3527 | if (!NILP (handler)) |
caf3c431 | 3528 | /* The handler can find the file name the same way we did. */ |
76c881b0 | 3529 | return call2 (handler, Qset_visited_file_modtime, Qnil); |
f5d5eccf RS |
3530 | else if (stat (XSTRING (filename)->data, &st) >= 0) |
3531 | current_buffer->modtime = st.st_mtime; | |
3532 | } | |
570d7624 JB |
3533 | |
3534 | return Qnil; | |
3535 | } | |
3536 | \f | |
3537 | Lisp_Object | |
3538 | auto_save_error () | |
3539 | { | |
570d7624 | 3540 | ring_bell (); |
1a04498e | 3541 | message ("Autosaving...error for %s", XSTRING (current_buffer->name)->data); |
de49a6d3 | 3542 | Fsleep_for (make_number (1), Qnil); |
1a04498e | 3543 | message ("Autosaving...error!for %s", XSTRING (current_buffer->name)->data); |
de49a6d3 | 3544 | Fsleep_for (make_number (1), Qnil); |
1a04498e | 3545 | message ("Autosaving...error for %s", XSTRING (current_buffer->name)->data); |
de49a6d3 | 3546 | Fsleep_for (make_number (1), Qnil); |
570d7624 JB |
3547 | return Qnil; |
3548 | } | |
3549 | ||
3550 | Lisp_Object | |
3551 | auto_save_1 () | |
3552 | { | |
3553 | unsigned char *fn; | |
3554 | struct stat st; | |
3555 | ||
3556 | /* Get visited file's mode to become the auto save file's mode. */ | |
3557 | if (stat (XSTRING (current_buffer->filename)->data, &st) >= 0) | |
3558 | /* But make sure we can overwrite it later! */ | |
3559 | auto_save_mode_bits = st.st_mode | 0600; | |
3560 | else | |
3561 | auto_save_mode_bits = 0666; | |
3562 | ||
3563 | return | |
3564 | Fwrite_region (Qnil, Qnil, | |
3565 | current_buffer->auto_save_file_name, | |
3566 | Qnil, Qlambda); | |
3567 | } | |
3568 | ||
e54d3b5d | 3569 | static Lisp_Object |
15fa1468 RS |
3570 | do_auto_save_unwind (desc) /* used as unwind-protect function */ |
3571 | Lisp_Object desc; | |
e54d3b5d | 3572 | { |
15fa1468 | 3573 | close (XINT (desc)); |
e54d3b5d RS |
3574 | return Qnil; |
3575 | } | |
3576 | ||
570d7624 JB |
3577 | DEFUN ("do-auto-save", Fdo_auto_save, Sdo_auto_save, 0, 2, "", |
3578 | "Auto-save all buffers that need it.\n\ | |
3579 | This is all buffers that have auto-saving enabled\n\ | |
3580 | and are changed since last auto-saved.\n\ | |
3581 | Auto-saving writes the buffer into a file\n\ | |
3582 | so that your editing is not lost if the system crashes.\n\ | |
012d4cdc RS |
3583 | This file is not the file you visited; that changes only when you save.\n\ |
3584 | Normally we run the normal hook `auto-save-hook' before saving.\n\n\ | |
570d7624 | 3585 | Non-nil first argument means do not print any message if successful.\n\ |
4746118a | 3586 | Non-nil second argument means save only current buffer.") |
17857782 JB |
3587 | (no_message, current_only) |
3588 | Lisp_Object no_message, current_only; | |
570d7624 JB |
3589 | { |
3590 | struct buffer *old = current_buffer, *b; | |
3591 | Lisp_Object tail, buf; | |
3592 | int auto_saved = 0; | |
3593 | char *omessage = echo_area_glyphs; | |
f05b275b | 3594 | int omessage_length = echo_area_glyphs_length; |
f14b1c68 JB |
3595 | extern int minibuf_level; |
3596 | int do_handled_files; | |
ff4c9993 | 3597 | Lisp_Object oquit; |
e54d3b5d | 3598 | int listdesc; |
e54d3b5d RS |
3599 | int count = specpdl_ptr - specpdl; |
3600 | int *ptr; | |
ff4c9993 RS |
3601 | |
3602 | /* Ordinarily don't quit within this function, | |
3603 | but don't make it impossible to quit (in case we get hung in I/O). */ | |
3604 | oquit = Vquit_flag; | |
3605 | Vquit_flag = Qnil; | |
570d7624 JB |
3606 | |
3607 | /* No GCPRO needed, because (when it matters) all Lisp_Object variables | |
3608 | point to non-strings reached from Vbuffer_alist. */ | |
3609 | ||
3610 | auto_saving = 1; | |
3611 | if (minibuf_level) | |
17857782 | 3612 | no_message = Qt; |
570d7624 | 3613 | |
265a9e55 | 3614 | if (!NILP (Vrun_hooks)) |
570d7624 JB |
3615 | call1 (Vrun_hooks, intern ("auto-save-hook")); |
3616 | ||
e54d3b5d RS |
3617 | if (STRINGP (Vauto_save_list_file_name)) |
3618 | { | |
3619 | #ifdef MSDOS | |
3620 | listdesc = open (XSTRING (Vauto_save_list_file_name)->data, | |
3621 | O_WRONLY | O_TRUNC | O_CREAT | O_TEXT, | |
3622 | S_IREAD | S_IWRITE); | |
3623 | #else /* not MSDOS */ | |
3624 | listdesc = creat (XSTRING (Vauto_save_list_file_name)->data, 0666); | |
3625 | #endif /* not MSDOS */ | |
3626 | } | |
3627 | else | |
3628 | listdesc = -1; | |
e54d3b5d | 3629 | |
15fa1468 RS |
3630 | /* Arrange to close that file whether or not we get an error. */ |
3631 | if (listdesc >= 0) | |
3632 | record_unwind_protect (do_auto_save_unwind, make_number (listdesc)); | |
e54d3b5d | 3633 | |
f14b1c68 JB |
3634 | /* First, save all files which don't have handlers. If Emacs is |
3635 | crashing, the handlers may tweak what is causing Emacs to crash | |
3636 | in the first place, and it would be a shame if Emacs failed to | |
3637 | autosave perfectly ordinary files because it couldn't handle some | |
3638 | ange-ftp'd file. */ | |
3639 | for (do_handled_files = 0; do_handled_files < 2; do_handled_files++) | |
3640 | for (tail = Vbuffer_alist; XGCTYPE (tail) == Lisp_Cons; | |
3641 | tail = XCONS (tail)->cdr) | |
3642 | { | |
3643 | buf = XCONS (XCONS (tail)->car)->cdr; | |
3644 | b = XBUFFER (buf); | |
e54d3b5d RS |
3645 | |
3646 | /* Record all the buffers that have auto save mode | |
3647 | in the special file that lists them. */ | |
3648 | if (XTYPE (b->auto_save_file_name) == Lisp_String | |
3649 | && listdesc >= 0 && do_handled_files == 0) | |
3650 | { | |
3651 | write (listdesc, XSTRING (b->auto_save_file_name)->data, | |
3652 | XSTRING (b->auto_save_file_name)->size); | |
3653 | write (listdesc, "\n", 1); | |
3654 | } | |
17857782 | 3655 | |
f14b1c68 JB |
3656 | if (!NILP (current_only) |
3657 | && b != current_buffer) | |
3658 | continue; | |
e54d3b5d | 3659 | |
f14b1c68 JB |
3660 | /* Check for auto save enabled |
3661 | and file changed since last auto save | |
3662 | and file changed since last real save. */ | |
3663 | if (XTYPE (b->auto_save_file_name) == Lisp_String | |
3664 | && b->save_modified < BUF_MODIFF (b) | |
3665 | && b->auto_save_modified < BUF_MODIFF (b) | |
82c2d839 RS |
3666 | /* -1 means we've turned off autosaving for a while--see below. */ |
3667 | && XINT (b->save_length) >= 0 | |
f14b1c68 | 3668 | && (do_handled_files |
49307295 KH |
3669 | || NILP (Ffind_file_name_handler (b->auto_save_file_name, |
3670 | Qwrite_region)))) | |
f14b1c68 | 3671 | { |
b60247d9 RS |
3672 | EMACS_TIME before_time, after_time; |
3673 | ||
3674 | EMACS_GET_TIME (before_time); | |
3675 | ||
3676 | /* If we had a failure, don't try again for 20 minutes. */ | |
3677 | if (b->auto_save_failure_time >= 0 | |
3678 | && EMACS_SECS (before_time) - b->auto_save_failure_time < 1200) | |
3679 | continue; | |
3680 | ||
f14b1c68 JB |
3681 | if ((XFASTINT (b->save_length) * 10 |
3682 | > (BUF_Z (b) - BUF_BEG (b)) * 13) | |
3683 | /* A short file is likely to change a large fraction; | |
3684 | spare the user annoying messages. */ | |
3685 | && XFASTINT (b->save_length) > 5000 | |
3686 | /* These messages are frequent and annoying for `*mail*'. */ | |
3687 | && !EQ (b->filename, Qnil) | |
3688 | && NILP (no_message)) | |
3689 | { | |
3690 | /* It has shrunk too much; turn off auto-saving here. */ | |
3691 | message ("Buffer %s has shrunk a lot; auto save turned off there", | |
3692 | XSTRING (b->name)->data); | |
82c2d839 RS |
3693 | /* Turn off auto-saving until there's a real save, |
3694 | and prevent any more warnings. */ | |
3695 | XSET (b->save_length, Lisp_Int, -1); | |
f14b1c68 JB |
3696 | Fsleep_for (make_number (1), Qnil); |
3697 | continue; | |
3698 | } | |
3699 | set_buffer_internal (b); | |
3700 | if (!auto_saved && NILP (no_message)) | |
3701 | message1 ("Auto-saving..."); | |
3702 | internal_condition_case (auto_save_1, Qt, auto_save_error); | |
3703 | auto_saved++; | |
3704 | b->auto_save_modified = BUF_MODIFF (b); | |
3705 | XFASTINT (current_buffer->save_length) = Z - BEG; | |
3706 | set_buffer_internal (old); | |
b60247d9 RS |
3707 | |
3708 | EMACS_GET_TIME (after_time); | |
3709 | ||
3710 | /* If auto-save took more than 60 seconds, | |
3711 | assume it was an NFS failure that got a timeout. */ | |
3712 | if (EMACS_SECS (after_time) - EMACS_SECS (before_time) > 60) | |
3713 | b->auto_save_failure_time = EMACS_SECS (after_time); | |
f14b1c68 JB |
3714 | } |
3715 | } | |
570d7624 | 3716 | |
b67f2ca5 RS |
3717 | /* Prevent another auto save till enough input events come in. */ |
3718 | record_auto_save (); | |
570d7624 | 3719 | |
17857782 | 3720 | if (auto_saved && NILP (no_message)) |
f05b275b KH |
3721 | { |
3722 | if (omessage) | |
3723 | message2 (omessage, omessage_length); | |
3724 | else | |
3725 | message1 ("Auto-saving...done"); | |
3726 | } | |
570d7624 | 3727 | |
ff4c9993 RS |
3728 | Vquit_flag = oquit; |
3729 | ||
570d7624 | 3730 | auto_saving = 0; |
e54d3b5d | 3731 | unbind_to (count, Qnil); |
570d7624 JB |
3732 | return Qnil; |
3733 | } | |
3734 | ||
3735 | DEFUN ("set-buffer-auto-saved", Fset_buffer_auto_saved, | |
3736 | Sset_buffer_auto_saved, 0, 0, 0, | |
3737 | "Mark current buffer as auto-saved with its current text.\n\ | |
3738 | No auto-save file will be written until the buffer changes again.") | |
3739 | () | |
3740 | { | |
3741 | current_buffer->auto_save_modified = MODIFF; | |
3742 | XFASTINT (current_buffer->save_length) = Z - BEG; | |
b60247d9 RS |
3743 | current_buffer->auto_save_failure_time = -1; |
3744 | return Qnil; | |
3745 | } | |
3746 | ||
3747 | DEFUN ("clear-buffer-auto-save-failure", Fclear_buffer_auto_save_failure, | |
3748 | Sclear_buffer_auto_save_failure, 0, 0, 0, | |
3749 | "Clear any record of a recent auto-save failure in the current buffer.") | |
3750 | () | |
3751 | { | |
3752 | current_buffer->auto_save_failure_time = -1; | |
570d7624 JB |
3753 | return Qnil; |
3754 | } | |
3755 | ||
3756 | DEFUN ("recent-auto-save-p", Frecent_auto_save_p, Srecent_auto_save_p, | |
3757 | 0, 0, 0, | |
3758 | "Return t if buffer has been auto-saved since last read in or saved.") | |
3759 | () | |
3760 | { | |
3761 | return (current_buffer->save_modified < current_buffer->auto_save_modified) ? Qt : Qnil; | |
3762 | } | |
3763 | \f | |
3764 | /* Reading and completing file names */ | |
3765 | extern Lisp_Object Ffile_name_completion (), Ffile_name_all_completions (); | |
3766 | ||
6e710ae5 RS |
3767 | /* In the string VAL, change each $ to $$ and return the result. */ |
3768 | ||
3769 | static Lisp_Object | |
3770 | double_dollars (val) | |
3771 | Lisp_Object val; | |
3772 | { | |
3773 | register unsigned char *old, *new; | |
3774 | register int n; | |
3775 | int osize, count; | |
3776 | ||
3777 | osize = XSTRING (val)->size; | |
3778 | /* Quote "$" as "$$" to get it past substitute-in-file-name */ | |
3779 | for (n = osize, count = 0, old = XSTRING (val)->data; n > 0; n--) | |
3780 | if (*old++ == '$') count++; | |
3781 | if (count > 0) | |
3782 | { | |
3783 | old = XSTRING (val)->data; | |
3784 | val = Fmake_string (make_number (osize + count), make_number (0)); | |
3785 | new = XSTRING (val)->data; | |
3786 | for (n = osize; n > 0; n--) | |
3787 | if (*old != '$') | |
3788 | *new++ = *old++; | |
3789 | else | |
3790 | { | |
3791 | *new++ = '$'; | |
3792 | *new++ = '$'; | |
3793 | old++; | |
3794 | } | |
3795 | } | |
3796 | return val; | |
3797 | } | |
3798 | ||
570d7624 JB |
3799 | DEFUN ("read-file-name-internal", Fread_file_name_internal, Sread_file_name_internal, |
3800 | 3, 3, 0, | |
3801 | "Internal subroutine for read-file-name. Do not call this.") | |
3802 | (string, dir, action) | |
3803 | Lisp_Object string, dir, action; | |
3804 | /* action is nil for complete, t for return list of completions, | |
3805 | lambda for verify final value */ | |
3806 | { | |
3807 | Lisp_Object name, specdir, realdir, val, orig_string; | |
09121adc RS |
3808 | int changed; |
3809 | struct gcpro gcpro1, gcpro2, gcpro3, gcpro4; | |
3810 | ||
3811 | realdir = dir; | |
3812 | name = string; | |
3813 | orig_string = Qnil; | |
3814 | specdir = Qnil; | |
3815 | changed = 0; | |
3816 | /* No need to protect ACTION--we only compare it with t and nil. */ | |
3817 | GCPRO4 (string, realdir, name, specdir); | |
570d7624 JB |
3818 | |
3819 | if (XSTRING (string)->size == 0) | |
3820 | { | |
570d7624 | 3821 | if (EQ (action, Qlambda)) |
09121adc RS |
3822 | { |
3823 | UNGCPRO; | |
3824 | return Qnil; | |
3825 | } | |
570d7624 JB |
3826 | } |
3827 | else | |
3828 | { | |
3829 | orig_string = string; | |
3830 | string = Fsubstitute_in_file_name (string); | |
09121adc | 3831 | changed = NILP (Fstring_equal (string, orig_string)); |
570d7624 | 3832 | name = Ffile_name_nondirectory (string); |
09121adc RS |
3833 | val = Ffile_name_directory (string); |
3834 | if (! NILP (val)) | |
3835 | realdir = Fexpand_file_name (val, realdir); | |
570d7624 JB |
3836 | } |
3837 | ||
265a9e55 | 3838 | if (NILP (action)) |
570d7624 JB |
3839 | { |
3840 | specdir = Ffile_name_directory (string); | |
3841 | val = Ffile_name_completion (name, realdir); | |
09121adc | 3842 | UNGCPRO; |
570d7624 JB |
3843 | if (XTYPE (val) != Lisp_String) |
3844 | { | |
09121adc | 3845 | if (changed) |
dbd04e01 | 3846 | return double_dollars (string); |
09121adc | 3847 | return val; |
570d7624 JB |
3848 | } |
3849 | ||
265a9e55 | 3850 | if (!NILP (specdir)) |
570d7624 JB |
3851 | val = concat2 (specdir, val); |
3852 | #ifndef VMS | |
6e710ae5 RS |
3853 | return double_dollars (val); |
3854 | #else /* not VMS */ | |
09121adc | 3855 | return val; |
6e710ae5 | 3856 | #endif /* not VMS */ |
570d7624 | 3857 | } |
09121adc | 3858 | UNGCPRO; |
570d7624 JB |
3859 | |
3860 | if (EQ (action, Qt)) | |
3861 | return Ffile_name_all_completions (name, realdir); | |
3862 | /* Only other case actually used is ACTION = lambda */ | |
3863 | #ifdef VMS | |
3864 | /* Supposedly this helps commands such as `cd' that read directory names, | |
3865 | but can someone explain how it helps them? -- RMS */ | |
3866 | if (XSTRING (name)->size == 0) | |
3867 | return Qt; | |
3868 | #endif /* VMS */ | |
3869 | return Ffile_exists_p (string); | |
3870 | } | |
3871 | ||
3872 | DEFUN ("read-file-name", Fread_file_name, Sread_file_name, 1, 5, 0, | |
3873 | "Read file name, prompting with PROMPT and completing in directory DIR.\n\ | |
3874 | Value is not expanded---you must call `expand-file-name' yourself.\n\ | |
3875 | Default name to DEFAULT if user enters a null string.\n\ | |
3876 | (If DEFAULT is omitted, the visited file name is used.)\n\ | |
3877 | Fourth arg MUSTMATCH non-nil means require existing file's name.\n\ | |
3878 | Non-nil and non-t means also require confirmation after completion.\n\ | |
3879 | Fifth arg INITIAL specifies text to start with.\n\ | |
3880 | DIR defaults to current buffer's directory default.") | |
3881 | (prompt, dir, defalt, mustmatch, initial) | |
3882 | Lisp_Object prompt, dir, defalt, mustmatch, initial; | |
3883 | { | |
85b5fe07 | 3884 | Lisp_Object val, insdef, insdef1, tem; |
570d7624 JB |
3885 | struct gcpro gcpro1, gcpro2; |
3886 | register char *homedir; | |
3887 | int count; | |
3888 | ||
265a9e55 | 3889 | if (NILP (dir)) |
570d7624 | 3890 | dir = current_buffer->directory; |
265a9e55 | 3891 | if (NILP (defalt)) |
570d7624 JB |
3892 | defalt = current_buffer->filename; |
3893 | ||
3894 | /* If dir starts with user's homedir, change that to ~. */ | |
3895 | homedir = (char *) egetenv ("HOME"); | |
3896 | if (homedir != 0 | |
3897 | && XTYPE (dir) == Lisp_String | |
3898 | && !strncmp (homedir, XSTRING (dir)->data, strlen (homedir)) | |
3899 | && XSTRING (dir)->data[strlen (homedir)] == '/') | |
3900 | { | |
3901 | dir = make_string (XSTRING (dir)->data + strlen (homedir) - 1, | |
3902 | XSTRING (dir)->size - strlen (homedir) + 1); | |
3903 | XSTRING (dir)->data[0] = '~'; | |
3904 | } | |
3905 | ||
3906 | if (insert_default_directory) | |
3907 | { | |
3908 | insdef = dir; | |
265a9e55 | 3909 | if (!NILP (initial)) |
570d7624 | 3910 | { |
15c65264 | 3911 | Lisp_Object args[2], pos; |
570d7624 JB |
3912 | |
3913 | args[0] = insdef; | |
3914 | args[1] = initial; | |
3915 | insdef = Fconcat (2, args); | |
351bd676 | 3916 | pos = make_number (XSTRING (double_dollars (dir))->size); |
6e710ae5 | 3917 | insdef1 = Fcons (double_dollars (insdef), pos); |
570d7624 | 3918 | } |
6e710ae5 RS |
3919 | else |
3920 | insdef1 = double_dollars (insdef); | |
570d7624 | 3921 | } |
351bd676 KH |
3922 | else if (!NILP (initial)) |
3923 | { | |
3924 | insdef = initial; | |
3925 | insdef1 = Fcons (double_dollars (insdef), 0); | |
3926 | } | |
570d7624 | 3927 | else |
85b5fe07 | 3928 | insdef = Qnil, insdef1 = Qnil; |
570d7624 JB |
3929 | |
3930 | #ifdef VMS | |
3931 | count = specpdl_ptr - specpdl; | |
3932 | specbind (intern ("completion-ignore-case"), Qt); | |
3933 | #endif | |
3934 | ||
3935 | GCPRO2 (insdef, defalt); | |
3936 | val = Fcompleting_read (prompt, intern ("read-file-name-internal"), | |
85b5fe07 | 3937 | dir, mustmatch, insdef1, |
15c65264 | 3938 | Qfile_name_history); |
570d7624 JB |
3939 | |
3940 | #ifdef VMS | |
3941 | unbind_to (count, Qnil); | |
3942 | #endif | |
3943 | ||
3944 | UNGCPRO; | |
265a9e55 | 3945 | if (NILP (val)) |
570d7624 JB |
3946 | error ("No file name specified"); |
3947 | tem = Fstring_equal (val, insdef); | |
265a9e55 | 3948 | if (!NILP (tem) && !NILP (defalt)) |
570d7624 | 3949 | return defalt; |
b320926a | 3950 | if (XSTRING (val)->size == 0 && NILP (insdef)) |
d9bc1c99 RS |
3951 | { |
3952 | if (!NILP (defalt)) | |
3953 | return defalt; | |
3954 | else | |
3955 | error ("No default file name"); | |
3956 | } | |
570d7624 JB |
3957 | return Fsubstitute_in_file_name (val); |
3958 | } | |
3959 | ||
3960 | #if 0 /* Old version */ | |
3961 | DEFUN ("read-file-name", Fread_file_name, Sread_file_name, 1, 5, 0, | |
0de25302 KH |
3962 | /* Don't confuse make-docfile by having two doc strings for this function. |
3963 | make-docfile does not pay attention to #if, for good reason! */ | |
3964 | 0) | |
570d7624 JB |
3965 | (prompt, dir, defalt, mustmatch, initial) |
3966 | Lisp_Object prompt, dir, defalt, mustmatch, initial; | |
3967 | { | |
3968 | Lisp_Object val, insdef, tem; | |
3969 | struct gcpro gcpro1, gcpro2; | |
3970 | register char *homedir; | |
3971 | int count; | |
3972 | ||
265a9e55 | 3973 | if (NILP (dir)) |
570d7624 | 3974 | dir = current_buffer->directory; |
265a9e55 | 3975 | if (NILP (defalt)) |
570d7624 JB |
3976 | defalt = current_buffer->filename; |
3977 | ||
3978 | /* If dir starts with user's homedir, change that to ~. */ | |
3979 | homedir = (char *) egetenv ("HOME"); | |
3980 | if (homedir != 0 | |
3981 | && XTYPE (dir) == Lisp_String | |
3982 | && !strncmp (homedir, XSTRING (dir)->data, strlen (homedir)) | |
3983 | && XSTRING (dir)->data[strlen (homedir)] == '/') | |
3984 | { | |
3985 | dir = make_string (XSTRING (dir)->data + strlen (homedir) - 1, | |
3986 | XSTRING (dir)->size - strlen (homedir) + 1); | |
3987 | XSTRING (dir)->data[0] = '~'; | |
3988 | } | |
3989 | ||
265a9e55 | 3990 | if (!NILP (initial)) |
570d7624 JB |
3991 | insdef = initial; |
3992 | else if (insert_default_directory) | |
3993 | insdef = dir; | |
3994 | else | |
3995 | insdef = build_string (""); | |
3996 | ||
3997 | #ifdef VMS | |
3998 | count = specpdl_ptr - specpdl; | |
3999 | specbind (intern ("completion-ignore-case"), Qt); | |
4000 | #endif | |
4001 | ||
4002 | GCPRO2 (insdef, defalt); | |
4003 | val = Fcompleting_read (prompt, intern ("read-file-name-internal"), | |
4004 | dir, mustmatch, | |
15c65264 RS |
4005 | insert_default_directory ? insdef : Qnil, |
4006 | Qfile_name_history); | |
570d7624 JB |
4007 | |
4008 | #ifdef VMS | |
4009 | unbind_to (count, Qnil); | |
4010 | #endif | |
4011 | ||
4012 | UNGCPRO; | |
265a9e55 | 4013 | if (NILP (val)) |
570d7624 JB |
4014 | error ("No file name specified"); |
4015 | tem = Fstring_equal (val, insdef); | |
265a9e55 | 4016 | if (!NILP (tem) && !NILP (defalt)) |
570d7624 JB |
4017 | return defalt; |
4018 | return Fsubstitute_in_file_name (val); | |
4019 | } | |
4020 | #endif /* Old version */ | |
4021 | \f | |
4022 | syms_of_fileio () | |
4023 | { | |
0bf2eed2 RS |
4024 | Qexpand_file_name = intern ("expand-file-name"); |
4025 | Qdirectory_file_name = intern ("directory-file-name"); | |
4026 | Qfile_name_directory = intern ("file-name-directory"); | |
4027 | Qfile_name_nondirectory = intern ("file-name-nondirectory"); | |
642ef245 | 4028 | Qunhandled_file_name_directory = intern ("unhandled-file-name-directory"); |
0bf2eed2 | 4029 | Qfile_name_as_directory = intern ("file-name-as-directory"); |
32f4334d | 4030 | Qcopy_file = intern ("copy-file"); |
a6e6e718 | 4031 | Qmake_directory_internal = intern ("make-directory-internal"); |
32f4334d RS |
4032 | Qdelete_directory = intern ("delete-directory"); |
4033 | Qdelete_file = intern ("delete-file"); | |
4034 | Qrename_file = intern ("rename-file"); | |
4035 | Qadd_name_to_file = intern ("add-name-to-file"); | |
4036 | Qmake_symbolic_link = intern ("make-symbolic-link"); | |
4037 | Qfile_exists_p = intern ("file-exists-p"); | |
4038 | Qfile_executable_p = intern ("file-executable-p"); | |
4039 | Qfile_readable_p = intern ("file-readable-p"); | |
4040 | Qfile_symlink_p = intern ("file-symlink-p"); | |
4041 | Qfile_writable_p = intern ("file-writable-p"); | |
4042 | Qfile_directory_p = intern ("file-directory-p"); | |
4043 | Qfile_accessible_directory_p = intern ("file-accessible-directory-p"); | |
4044 | Qfile_modes = intern ("file-modes"); | |
4045 | Qset_file_modes = intern ("set-file-modes"); | |
4046 | Qfile_newer_than_file_p = intern ("file-newer-than-file-p"); | |
4047 | Qinsert_file_contents = intern ("insert-file-contents"); | |
4048 | Qwrite_region = intern ("write-region"); | |
4049 | Qverify_visited_file_modtime = intern ("verify-visited-file-modtime"); | |
3ec46acd | 4050 | Qset_visited_file_modtime = intern ("set-visited-file-modtime"); |
32f4334d | 4051 | |
642ef245 JB |
4052 | staticpro (&Qexpand_file_name); |
4053 | staticpro (&Qdirectory_file_name); | |
4054 | staticpro (&Qfile_name_directory); | |
4055 | staticpro (&Qfile_name_nondirectory); | |
4056 | staticpro (&Qunhandled_file_name_directory); | |
4057 | staticpro (&Qfile_name_as_directory); | |
15c65264 | 4058 | staticpro (&Qcopy_file); |
c34b559d | 4059 | staticpro (&Qmake_directory_internal); |
15c65264 RS |
4060 | staticpro (&Qdelete_directory); |
4061 | staticpro (&Qdelete_file); | |
4062 | staticpro (&Qrename_file); | |
4063 | staticpro (&Qadd_name_to_file); | |
4064 | staticpro (&Qmake_symbolic_link); | |
4065 | staticpro (&Qfile_exists_p); | |
4066 | staticpro (&Qfile_executable_p); | |
4067 | staticpro (&Qfile_readable_p); | |
4068 | staticpro (&Qfile_symlink_p); | |
4069 | staticpro (&Qfile_writable_p); | |
4070 | staticpro (&Qfile_directory_p); | |
4071 | staticpro (&Qfile_accessible_directory_p); | |
4072 | staticpro (&Qfile_modes); | |
4073 | staticpro (&Qset_file_modes); | |
4074 | staticpro (&Qfile_newer_than_file_p); | |
4075 | staticpro (&Qinsert_file_contents); | |
4076 | staticpro (&Qwrite_region); | |
4077 | staticpro (&Qverify_visited_file_modtime); | |
642ef245 JB |
4078 | |
4079 | Qfile_name_history = intern ("file-name-history"); | |
4080 | Fset (Qfile_name_history, Qnil); | |
15c65264 RS |
4081 | staticpro (&Qfile_name_history); |
4082 | ||
570d7624 JB |
4083 | Qfile_error = intern ("file-error"); |
4084 | staticpro (&Qfile_error); | |
4085 | Qfile_already_exists = intern("file-already-exists"); | |
4086 | staticpro (&Qfile_already_exists); | |
4087 | ||
4c3c22f3 RS |
4088 | #ifdef MSDOS |
4089 | Qfind_buffer_file_type = intern ("find-buffer-file-type"); | |
4090 | staticpro (&Qfind_buffer_file_type); | |
4091 | #endif | |
4092 | ||
d6a3cc15 RS |
4093 | Qcar_less_than_car = intern ("car-less-than-car"); |
4094 | staticpro (&Qcar_less_than_car); | |
4095 | ||
570d7624 JB |
4096 | Fput (Qfile_error, Qerror_conditions, |
4097 | Fcons (Qfile_error, Fcons (Qerror, Qnil))); | |
4098 | Fput (Qfile_error, Qerror_message, | |
4099 | build_string ("File error")); | |
4100 | ||
4101 | Fput (Qfile_already_exists, Qerror_conditions, | |
4102 | Fcons (Qfile_already_exists, | |
4103 | Fcons (Qfile_error, Fcons (Qerror, Qnil)))); | |
4104 | Fput (Qfile_already_exists, Qerror_message, | |
4105 | build_string ("File already exists")); | |
4106 | ||
4107 | DEFVAR_BOOL ("insert-default-directory", &insert_default_directory, | |
4108 | "*Non-nil means when reading a filename start with default dir in minibuffer."); | |
4109 | insert_default_directory = 1; | |
4110 | ||
4111 | DEFVAR_BOOL ("vms-stmlf-recfm", &vms_stmlf_recfm, | |
4112 | "*Non-nil means write new files with record format `stmlf'.\n\ | |
4113 | nil means use format `var'. This variable is meaningful only on VMS."); | |
4114 | vms_stmlf_recfm = 0; | |
4115 | ||
1d1826db RS |
4116 | DEFVAR_LISP ("file-name-handler-alist", &Vfile_name_handler_alist, |
4117 | "*Alist of elements (REGEXP . HANDLER) for file names handled specially.\n\ | |
4118 | If a file name matches REGEXP, then all I/O on that file is done by calling\n\ | |
4119 | HANDLER.\n\ | |
4120 | \n\ | |
4121 | The first argument given to HANDLER is the name of the I/O primitive\n\ | |
4122 | to be handled; the remaining arguments are the arguments that were\n\ | |
4123 | passed to that primitive. For example, if you do\n\ | |
4124 | (file-exists-p FILENAME)\n\ | |
4125 | and FILENAME is handled by HANDLER, then HANDLER is called like this:\n\ | |
642ef245 JB |
4126 | (funcall HANDLER 'file-exists-p FILENAME)\n\ |
4127 | The function `find-file-name-handler' checks this list for a handler\n\ | |
4128 | for its argument."); | |
09121adc RS |
4129 | Vfile_name_handler_alist = Qnil; |
4130 | ||
d6a3cc15 | 4131 | DEFVAR_LISP ("after-insert-file-functions", &Vafter_insert_file_functions, |
246cfea5 RS |
4132 | "A list of functions to be called at the end of `insert-file-contents'.\n\ |
4133 | Each is passed one argument, the number of bytes inserted. It should return\n\ | |
4134 | the new byte count, and leave point the same. If `insert-file-contents' is\n\ | |
4135 | intercepted by a handler from `file-name-handler-alist', that handler is\n\ | |
d6a3cc15 RS |
4136 | responsible for calling the after-insert-file-functions if appropriate."); |
4137 | Vafter_insert_file_functions = Qnil; | |
4138 | ||
4139 | DEFVAR_LISP ("write-region-annotate-functions", &Vwrite_region_annotate_functions, | |
246cfea5 RS |
4140 | "A list of functions to be called at the start of `write-region'.\n\ |
4141 | Each is passed two arguments, START and END as for `write-region'. It should\n\ | |
4142 | return a list of pairs (POSITION . STRING) of strings to be effectively\n\ | |
4143 | inserted at the specified positions of the file being written (1 means to\n\ | |
4144 | insert before the first byte written). The POSITIONs must be sorted into\n\ | |
4145 | increasing order. If there are several functions in the list, the several\n\ | |
d6a3cc15 RS |
4146 | lists are merged destructively."); |
4147 | Vwrite_region_annotate_functions = Qnil; | |
4148 | ||
6fc6f94b RS |
4149 | DEFVAR_LISP ("write-region-annotations-so-far", |
4150 | &Vwrite_region_annotations_so_far, | |
4151 | "When an annotation function is called, this holds the previous annotations.\n\ | |
4152 | These are the annotations made by other annotation functions\n\ | |
4153 | that were already called. See also `write-region-annotate-functions'."); | |
4154 | Vwrite_region_annotations_so_far = Qnil; | |
4155 | ||
82c2d839 | 4156 | DEFVAR_LISP ("inhibit-file-name-handlers", &Vinhibit_file_name_handlers, |
268466ed | 4157 | "A list of file name handlers that temporarily should not be used.\n\ |
e3e86241 | 4158 | This applies only to the operation `inhibit-file-name-operation'."); |
82c2d839 RS |
4159 | Vinhibit_file_name_handlers = Qnil; |
4160 | ||
a65970a0 RS |
4161 | DEFVAR_LISP ("inhibit-file-name-operation", &Vinhibit_file_name_operation, |
4162 | "The operation for which `inhibit-file-name-handlers' is applicable."); | |
4163 | Vinhibit_file_name_operation = Qnil; | |
4164 | ||
e54d3b5d RS |
4165 | DEFVAR_LISP ("auto-save-list-file-name", &Vauto_save_list_file_name, |
4166 | "File name in which we write a list of all auto save file names."); | |
4167 | Vauto_save_list_file_name = Qnil; | |
4168 | ||
642ef245 | 4169 | defsubr (&Sfind_file_name_handler); |
570d7624 JB |
4170 | defsubr (&Sfile_name_directory); |
4171 | defsubr (&Sfile_name_nondirectory); | |
642ef245 | 4172 | defsubr (&Sunhandled_file_name_directory); |
570d7624 JB |
4173 | defsubr (&Sfile_name_as_directory); |
4174 | defsubr (&Sdirectory_file_name); | |
4175 | defsubr (&Smake_temp_name); | |
4176 | defsubr (&Sexpand_file_name); | |
4177 | defsubr (&Ssubstitute_in_file_name); | |
4178 | defsubr (&Scopy_file); | |
9bbe01fb | 4179 | defsubr (&Smake_directory_internal); |
aa734e17 | 4180 | defsubr (&Sdelete_directory); |
570d7624 JB |
4181 | defsubr (&Sdelete_file); |
4182 | defsubr (&Srename_file); | |
4183 | defsubr (&Sadd_name_to_file); | |
4184 | #ifdef S_IFLNK | |
4185 | defsubr (&Smake_symbolic_link); | |
4186 | #endif /* S_IFLNK */ | |
4187 | #ifdef VMS | |
4188 | defsubr (&Sdefine_logical_name); | |
4189 | #endif /* VMS */ | |
4190 | #ifdef HPUX_NET | |
4191 | defsubr (&Ssysnetunam); | |
4192 | #endif /* HPUX_NET */ | |
4193 | defsubr (&Sfile_name_absolute_p); | |
4194 | defsubr (&Sfile_exists_p); | |
4195 | defsubr (&Sfile_executable_p); | |
4196 | defsubr (&Sfile_readable_p); | |
4197 | defsubr (&Sfile_writable_p); | |
4198 | defsubr (&Sfile_symlink_p); | |
4199 | defsubr (&Sfile_directory_p); | |
b72dea2a | 4200 | defsubr (&Sfile_accessible_directory_p); |
570d7624 JB |
4201 | defsubr (&Sfile_modes); |
4202 | defsubr (&Sset_file_modes); | |
c24e9a53 RS |
4203 | defsubr (&Sset_default_file_modes); |
4204 | defsubr (&Sdefault_file_modes); | |
570d7624 JB |
4205 | defsubr (&Sfile_newer_than_file_p); |
4206 | defsubr (&Sinsert_file_contents); | |
4207 | defsubr (&Swrite_region); | |
d6a3cc15 | 4208 | defsubr (&Scar_less_than_car); |
570d7624 JB |
4209 | defsubr (&Sverify_visited_file_modtime); |
4210 | defsubr (&Sclear_visited_file_modtime); | |
f5d5eccf | 4211 | defsubr (&Svisited_file_modtime); |
570d7624 JB |
4212 | defsubr (&Sset_visited_file_modtime); |
4213 | defsubr (&Sdo_auto_save); | |
4214 | defsubr (&Sset_buffer_auto_saved); | |
b60247d9 | 4215 | defsubr (&Sclear_buffer_auto_save_failure); |
570d7624 JB |
4216 | defsubr (&Srecent_auto_save_p); |
4217 | ||
4218 | defsubr (&Sread_file_name_internal); | |
4219 | defsubr (&Sread_file_name); | |
85ffea93 | 4220 | |
483a2e10 | 4221 | #ifdef unix |
85ffea93 | 4222 | defsubr (&Sunix_sync); |
483a2e10 | 4223 | #endif |
570d7624 | 4224 | } |