Commit | Line | Data |
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570d7624 | 1 | /* File IO for GNU Emacs. |
f8c25f1b | 2 | Copyright (C) 1985, 86, 87, 88, 93, 94, 95 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 | |
5e570b75 | 72 | #ifndef WINDOWSNT |
6e23c83e JB |
73 | #define HAVE_FSYNC |
74 | #endif | |
75 | #endif | |
76 | #endif | |
5e570b75 | 77 | #endif |
6e23c83e | 78 | |
570d7624 | 79 | #include "lisp.h" |
8d4e077b | 80 | #include "intervals.h" |
570d7624 JB |
81 | #include "buffer.h" |
82 | #include "window.h" | |
83 | ||
5e570b75 RS |
84 | #ifdef WINDOWSNT |
85 | #define NOMINMAX 1 | |
86 | #include <windows.h> | |
87 | #include <stdlib.h> | |
88 | #include <fcntl.h> | |
89 | #endif /* not WINDOWSNT */ | |
90 | ||
570d7624 | 91 | #ifdef VMS |
570d7624 JB |
92 | #include <file.h> |
93 | #include <rmsdef.h> | |
94 | #include <fab.h> | |
95 | #include <nam.h> | |
96 | #endif | |
97 | ||
de5bf5d3 | 98 | #include "systime.h" |
570d7624 JB |
99 | |
100 | #ifdef HPUX | |
101 | #include <netio.h> | |
9b7828a5 | 102 | #ifndef HPUX8 |
47e7b9e5 | 103 | #ifndef HPUX9 |
570d7624 JB |
104 | #include <errnet.h> |
105 | #endif | |
9b7828a5 | 106 | #endif |
47e7b9e5 | 107 | #endif |
570d7624 JB |
108 | |
109 | #ifndef O_WRONLY | |
110 | #define O_WRONLY 1 | |
111 | #endif | |
112 | ||
4018b5ef RS |
113 | #ifndef O_RDONLY |
114 | #define O_RDONLY 0 | |
115 | #endif | |
116 | ||
570d7624 JB |
117 | #define min(a, b) ((a) < (b) ? (a) : (b)) |
118 | #define max(a, b) ((a) > (b) ? (a) : (b)) | |
119 | ||
120 | /* Nonzero during writing of auto-save files */ | |
121 | int auto_saving; | |
122 | ||
123 | /* Set by auto_save_1 to mode of original file so Fwrite_region will create | |
124 | a new file with the same mode as the original */ | |
125 | int auto_save_mode_bits; | |
126 | ||
32f4334d RS |
127 | /* Alist of elements (REGEXP . HANDLER) for file names |
128 | whose I/O is done with a special handler. */ | |
129 | Lisp_Object Vfile_name_handler_alist; | |
130 | ||
0d420e88 BG |
131 | /* Format for auto-save files */ |
132 | Lisp_Object Vauto_save_file_format; | |
133 | ||
134 | /* Lisp functions for translating file formats */ | |
135 | Lisp_Object Qformat_decode, Qformat_annotate_function; | |
136 | ||
d6a3cc15 RS |
137 | /* Functions to be called to process text properties in inserted file. */ |
138 | Lisp_Object Vafter_insert_file_functions; | |
139 | ||
140 | /* Functions to be called to create text property annotations for file. */ | |
141 | Lisp_Object Vwrite_region_annotate_functions; | |
142 | ||
6fc6f94b RS |
143 | /* During build_annotations, each time an annotation function is called, |
144 | this holds the annotations made by the previous functions. */ | |
145 | Lisp_Object Vwrite_region_annotations_so_far; | |
146 | ||
e54d3b5d RS |
147 | /* File name in which we write a list of all our auto save files. */ |
148 | Lisp_Object Vauto_save_list_file_name; | |
149 | ||
570d7624 JB |
150 | /* Nonzero means, when reading a filename in the minibuffer, |
151 | start out by inserting the default directory into the minibuffer. */ | |
152 | int insert_default_directory; | |
153 | ||
154 | /* On VMS, nonzero means write new files with record format stmlf. | |
155 | Zero means use var format. */ | |
156 | int vms_stmlf_recfm; | |
157 | ||
a65970a0 RS |
158 | /* These variables describe handlers that have "already" had a chance |
159 | to handle the current operation. | |
160 | ||
161 | Vinhibit_file_name_handlers is a list of file name handlers. | |
162 | Vinhibit_file_name_operation is the operation being handled. | |
163 | If we try to handle that operation, we ignore those handlers. */ | |
164 | ||
82c2d839 | 165 | static Lisp_Object Vinhibit_file_name_handlers; |
a65970a0 | 166 | static Lisp_Object Vinhibit_file_name_operation; |
82c2d839 | 167 | |
570d7624 JB |
168 | Lisp_Object Qfile_error, Qfile_already_exists; |
169 | ||
15c65264 RS |
170 | Lisp_Object Qfile_name_history; |
171 | ||
d6a3cc15 RS |
172 | Lisp_Object Qcar_less_than_car; |
173 | ||
570d7624 JB |
174 | report_file_error (string, data) |
175 | char *string; | |
176 | Lisp_Object data; | |
177 | { | |
178 | Lisp_Object errstring; | |
179 | ||
a1f17b2d | 180 | errstring = build_string (strerror (errno)); |
570d7624 JB |
181 | |
182 | /* System error messages are capitalized. Downcase the initial | |
183 | unless it is followed by a slash. */ | |
184 | if (XSTRING (errstring)->data[1] != '/') | |
185 | XSTRING (errstring)->data[0] = DOWNCASE (XSTRING (errstring)->data[0]); | |
186 | ||
187 | while (1) | |
188 | Fsignal (Qfile_error, | |
189 | Fcons (build_string (string), Fcons (errstring, data))); | |
190 | } | |
b5148e85 RS |
191 | |
192 | close_file_unwind (fd) | |
193 | Lisp_Object fd; | |
194 | { | |
195 | close (XFASTINT (fd)); | |
196 | } | |
a1d2b64a RS |
197 | |
198 | /* Restore point, having saved it as a marker. */ | |
199 | ||
200 | restore_point_unwind (location) | |
201 | Lisp_Object location; | |
202 | { | |
203 | SET_PT (marker_position (location)); | |
204 | Fset_marker (location, Qnil, Qnil); | |
205 | } | |
570d7624 | 206 | \f |
0bf2eed2 | 207 | Lisp_Object Qexpand_file_name; |
273e0829 | 208 | Lisp_Object Qsubstitute_in_file_name; |
0bf2eed2 RS |
209 | Lisp_Object Qdirectory_file_name; |
210 | Lisp_Object Qfile_name_directory; | |
211 | Lisp_Object Qfile_name_nondirectory; | |
642ef245 | 212 | Lisp_Object Qunhandled_file_name_directory; |
0bf2eed2 | 213 | Lisp_Object Qfile_name_as_directory; |
32f4334d | 214 | Lisp_Object Qcopy_file; |
a6e6e718 | 215 | Lisp_Object Qmake_directory_internal; |
32f4334d RS |
216 | Lisp_Object Qdelete_directory; |
217 | Lisp_Object Qdelete_file; | |
218 | Lisp_Object Qrename_file; | |
219 | Lisp_Object Qadd_name_to_file; | |
220 | Lisp_Object Qmake_symbolic_link; | |
221 | Lisp_Object Qfile_exists_p; | |
222 | Lisp_Object Qfile_executable_p; | |
223 | Lisp_Object Qfile_readable_p; | |
224 | Lisp_Object Qfile_symlink_p; | |
225 | Lisp_Object Qfile_writable_p; | |
226 | Lisp_Object Qfile_directory_p; | |
adedc71d | 227 | Lisp_Object Qfile_regular_p; |
32f4334d RS |
228 | Lisp_Object Qfile_accessible_directory_p; |
229 | Lisp_Object Qfile_modes; | |
230 | Lisp_Object Qset_file_modes; | |
231 | Lisp_Object Qfile_newer_than_file_p; | |
232 | Lisp_Object Qinsert_file_contents; | |
233 | Lisp_Object Qwrite_region; | |
234 | Lisp_Object Qverify_visited_file_modtime; | |
3ec46acd | 235 | Lisp_Object Qset_visited_file_modtime; |
32f4334d | 236 | |
49307295 KH |
237 | DEFUN ("find-file-name-handler", Ffind_file_name_handler, Sfind_file_name_handler, 2, 2, 0, |
238 | "Return FILENAME's handler function for OPERATION, if it has one.\n\ | |
642ef245 JB |
239 | Otherwise, return nil.\n\ |
240 | A file name is handled if one of the regular expressions in\n\ | |
82c2d839 | 241 | `file-name-handler-alist' matches it.\n\n\ |
a65970a0 RS |
242 | If OPERATION equals `inhibit-file-name-operation', then we ignore\n\ |
243 | any handlers that are members of `inhibit-file-name-handlers',\n\ | |
244 | but we still do run any other handlers. This lets handlers\n\ | |
82c2d839 | 245 | use the standard functions without calling themselves recursively.") |
49307295 KH |
246 | (filename, operation) |
247 | Lisp_Object filename, operation; | |
32f4334d | 248 | { |
642ef245 | 249 | /* This function must not munge the match data. */ |
a65970a0 | 250 | Lisp_Object chain, inhibited_handlers; |
642ef245 | 251 | |
e4432095 JB |
252 | CHECK_STRING (filename, 0); |
253 | ||
a65970a0 RS |
254 | if (EQ (operation, Vinhibit_file_name_operation)) |
255 | inhibited_handlers = Vinhibit_file_name_handlers; | |
256 | else | |
257 | inhibited_handlers = Qnil; | |
82c2d839 | 258 | |
93c30b5f | 259 | for (chain = Vfile_name_handler_alist; CONSP (chain); |
32f4334d RS |
260 | chain = XCONS (chain)->cdr) |
261 | { | |
262 | Lisp_Object elt; | |
263 | elt = XCONS (chain)->car; | |
93c30b5f | 264 | if (CONSP (elt)) |
32f4334d RS |
265 | { |
266 | Lisp_Object string; | |
267 | string = XCONS (elt)->car; | |
93c30b5f | 268 | if (STRINGP (string) && fast_string_match (string, filename) >= 0) |
a65970a0 RS |
269 | { |
270 | Lisp_Object handler, tem; | |
271 | ||
272 | handler = XCONS (elt)->cdr; | |
273 | tem = Fmemq (handler, inhibited_handlers); | |
274 | if (NILP (tem)) | |
275 | return handler; | |
276 | } | |
32f4334d | 277 | } |
642ef245 JB |
278 | |
279 | QUIT; | |
32f4334d RS |
280 | } |
281 | return Qnil; | |
282 | } | |
283 | \f | |
570d7624 JB |
284 | DEFUN ("file-name-directory", Ffile_name_directory, Sfile_name_directory, |
285 | 1, 1, 0, | |
286 | "Return the directory component in file name NAME.\n\ | |
287 | Return nil if NAME does not include a directory.\n\ | |
288 | Otherwise return a directory spec.\n\ | |
289 | Given a Unix syntax file name, returns a string ending in slash;\n\ | |
290 | on VMS, perhaps instead a string ending in `:', `]' or `>'.") | |
291 | (file) | |
292 | Lisp_Object file; | |
293 | { | |
294 | register unsigned char *beg; | |
295 | register unsigned char *p; | |
0bf2eed2 | 296 | Lisp_Object handler; |
570d7624 JB |
297 | |
298 | CHECK_STRING (file, 0); | |
299 | ||
0bf2eed2 RS |
300 | /* If the file name has special constructs in it, |
301 | call the corresponding file handler. */ | |
49307295 | 302 | handler = Ffind_file_name_handler (file, Qfile_name_directory); |
0bf2eed2 RS |
303 | if (!NILP (handler)) |
304 | return call2 (handler, Qfile_name_directory, file); | |
305 | ||
4c3c22f3 RS |
306 | #ifdef FILE_SYSTEM_CASE |
307 | file = FILE_SYSTEM_CASE (file); | |
308 | #endif | |
570d7624 JB |
309 | beg = XSTRING (file)->data; |
310 | p = beg + XSTRING (file)->size; | |
311 | ||
5e570b75 | 312 | while (p != beg && !IS_ANY_SEP (p[-1]) |
570d7624 JB |
313 | #ifdef VMS |
314 | && p[-1] != ':' && p[-1] != ']' && p[-1] != '>' | |
315 | #endif /* VMS */ | |
316 | ) p--; | |
317 | ||
318 | if (p == beg) | |
319 | return Qnil; | |
5e570b75 | 320 | #ifdef DOS_NT |
4c3c22f3 | 321 | /* Expansion of "c:" to drive and default directory. */ |
5e570b75 | 322 | /* (NT does the right thing.) */ |
4c3c22f3 RS |
323 | if (p == beg + 2 && beg[1] == ':') |
324 | { | |
325 | int drive = (*beg) - 'a'; | |
326 | /* MAXPATHLEN+1 is guaranteed to be enough space for getdefdir. */ | |
327 | unsigned char *res = alloca (MAXPATHLEN + 5); | |
5e570b75 RS |
328 | unsigned char *res1; |
329 | #ifdef WINDOWSNT | |
330 | res1 = res; | |
331 | /* The NT version places the drive letter at the beginning already. */ | |
332 | #else /* not WINDOWSNT */ | |
333 | /* On MSDOG we must put the drive letter in by hand. */ | |
334 | res1 = res + 2; | |
335 | #endif /* not WINDOWSNT */ | |
336 | if (getdefdir (drive + 1, res)) | |
4c3c22f3 | 337 | { |
5e570b75 | 338 | #ifdef MSDOS |
4c3c22f3 RS |
339 | res[0] = drive + 'a'; |
340 | res[1] = ':'; | |
5e570b75 RS |
341 | #endif /* MSDOS */ |
342 | if (IS_DIRECTORY_SEP (res[strlen (res) - 1])) | |
4c3c22f3 RS |
343 | strcat (res, "/"); |
344 | beg = res; | |
345 | p = beg + strlen (beg); | |
346 | } | |
347 | } | |
5e570b75 | 348 | #endif /* DOS_NT */ |
570d7624 JB |
349 | return make_string (beg, p - beg); |
350 | } | |
351 | ||
352 | DEFUN ("file-name-nondirectory", Ffile_name_nondirectory, Sfile_name_nondirectory, | |
353 | 1, 1, 0, | |
354 | "Return file name NAME sans its directory.\n\ | |
355 | For example, in a Unix-syntax file name,\n\ | |
356 | this is everything after the last slash,\n\ | |
357 | or the entire name if it contains no slash.") | |
358 | (file) | |
359 | Lisp_Object file; | |
360 | { | |
361 | register unsigned char *beg, *p, *end; | |
0bf2eed2 | 362 | Lisp_Object handler; |
570d7624 JB |
363 | |
364 | CHECK_STRING (file, 0); | |
365 | ||
0bf2eed2 RS |
366 | /* If the file name has special constructs in it, |
367 | call the corresponding file handler. */ | |
49307295 | 368 | handler = Ffind_file_name_handler (file, Qfile_name_nondirectory); |
0bf2eed2 RS |
369 | if (!NILP (handler)) |
370 | return call2 (handler, Qfile_name_nondirectory, file); | |
371 | ||
570d7624 JB |
372 | beg = XSTRING (file)->data; |
373 | end = p = beg + XSTRING (file)->size; | |
374 | ||
5e570b75 | 375 | while (p != beg && !IS_ANY_SEP (p[-1]) |
570d7624 JB |
376 | #ifdef VMS |
377 | && p[-1] != ':' && p[-1] != ']' && p[-1] != '>' | |
378 | #endif /* VMS */ | |
379 | ) p--; | |
380 | ||
381 | return make_string (p, end - p); | |
382 | } | |
642ef245 JB |
383 | |
384 | DEFUN ("unhandled-file-name-directory", Funhandled_file_name_directory, Sunhandled_file_name_directory, 1, 1, 0, | |
385 | "Return a directly usable directory name somehow associated with FILENAME.\n\ | |
386 | A `directly usable' directory name is one that may be used without the\n\ | |
387 | intervention of any file handler.\n\ | |
388 | If FILENAME is a directly usable file itself, return\n\ | |
389 | (file-name-directory FILENAME).\n\ | |
390 | The `call-process' and `start-process' functions use this function to\n\ | |
391 | get a current directory to run processes in.") | |
392 | (filename) | |
393 | Lisp_Object filename; | |
394 | { | |
395 | Lisp_Object handler; | |
396 | ||
397 | /* If the file name has special constructs in it, | |
398 | call the corresponding file handler. */ | |
49307295 | 399 | handler = Ffind_file_name_handler (filename, Qunhandled_file_name_directory); |
642ef245 JB |
400 | if (!NILP (handler)) |
401 | return call2 (handler, Qunhandled_file_name_directory, filename); | |
402 | ||
403 | return Ffile_name_directory (filename); | |
404 | } | |
405 | ||
570d7624 JB |
406 | \f |
407 | char * | |
408 | file_name_as_directory (out, in) | |
409 | char *out, *in; | |
410 | { | |
411 | int size = strlen (in) - 1; | |
412 | ||
413 | strcpy (out, in); | |
414 | ||
415 | #ifdef VMS | |
416 | /* Is it already a directory string? */ | |
417 | if (in[size] == ':' || in[size] == ']' || in[size] == '>') | |
418 | return out; | |
419 | /* Is it a VMS directory file name? If so, hack VMS syntax. */ | |
420 | else if (! index (in, '/') | |
421 | && ((size > 3 && ! strcmp (&in[size - 3], ".DIR")) | |
422 | || (size > 3 && ! strcmp (&in[size - 3], ".dir")) | |
423 | || (size > 5 && (! strncmp (&in[size - 5], ".DIR", 4) | |
424 | || ! strncmp (&in[size - 5], ".dir", 4)) | |
425 | && (in[size - 1] == '.' || in[size - 1] == ';') | |
426 | && in[size] == '1'))) | |
427 | { | |
428 | register char *p, *dot; | |
429 | char brack; | |
430 | ||
431 | /* x.dir -> [.x] | |
432 | dir:x.dir --> dir:[x] | |
433 | dir:[x]y.dir --> dir:[x.y] */ | |
434 | p = in + size; | |
435 | while (p != in && *p != ':' && *p != '>' && *p != ']') p--; | |
436 | if (p != in) | |
437 | { | |
438 | strncpy (out, in, p - in); | |
439 | out[p - in] = '\0'; | |
440 | if (*p == ':') | |
441 | { | |
442 | brack = ']'; | |
443 | strcat (out, ":["); | |
444 | } | |
445 | else | |
446 | { | |
447 | brack = *p; | |
448 | strcat (out, "."); | |
449 | } | |
450 | p++; | |
451 | } | |
452 | else | |
453 | { | |
454 | brack = ']'; | |
455 | strcpy (out, "[."); | |
456 | } | |
bfb61299 JB |
457 | dot = index (p, '.'); |
458 | if (dot) | |
570d7624 JB |
459 | { |
460 | /* blindly remove any extension */ | |
461 | size = strlen (out) + (dot - p); | |
462 | strncat (out, p, dot - p); | |
463 | } | |
464 | else | |
465 | { | |
466 | strcat (out, p); | |
467 | size = strlen (out); | |
468 | } | |
469 | out[size++] = brack; | |
470 | out[size] = '\0'; | |
471 | } | |
472 | #else /* not VMS */ | |
473 | /* For Unix syntax, Append a slash if necessary */ | |
5e570b75 RS |
474 | if (!IS_ANY_SEP (out[size])) |
475 | { | |
476 | out[size + 1] = DIRECTORY_SEP; | |
477 | out[size + 2] = '\0'; | |
478 | } | |
570d7624 JB |
479 | #endif /* not VMS */ |
480 | return out; | |
481 | } | |
482 | ||
483 | DEFUN ("file-name-as-directory", Ffile_name_as_directory, | |
484 | Sfile_name_as_directory, 1, 1, 0, | |
485 | "Return a string representing file FILENAME interpreted as a directory.\n\ | |
486 | This operation exists because a directory is also a file, but its name as\n\ | |
487 | a directory is different from its name as a file.\n\ | |
488 | The result can be used as the value of `default-directory'\n\ | |
489 | or passed as second argument to `expand-file-name'.\n\ | |
490 | For a Unix-syntax file name, just appends a slash.\n\ | |
491 | On VMS, converts \"[X]FOO.DIR\" to \"[X.FOO]\", etc.") | |
492 | (file) | |
493 | Lisp_Object file; | |
494 | { | |
495 | char *buf; | |
0bf2eed2 | 496 | Lisp_Object handler; |
570d7624 JB |
497 | |
498 | CHECK_STRING (file, 0); | |
265a9e55 | 499 | if (NILP (file)) |
570d7624 | 500 | return Qnil; |
0bf2eed2 RS |
501 | |
502 | /* If the file name has special constructs in it, | |
503 | call the corresponding file handler. */ | |
49307295 | 504 | handler = Ffind_file_name_handler (file, Qfile_name_as_directory); |
0bf2eed2 RS |
505 | if (!NILP (handler)) |
506 | return call2 (handler, Qfile_name_as_directory, file); | |
507 | ||
570d7624 JB |
508 | buf = (char *) alloca (XSTRING (file)->size + 10); |
509 | return build_string (file_name_as_directory (buf, XSTRING (file)->data)); | |
510 | } | |
511 | \f | |
512 | /* | |
513 | * Convert from directory name to filename. | |
514 | * On VMS: | |
515 | * xyzzy:[mukesh.emacs] => xyzzy:[mukesh]emacs.dir.1 | |
516 | * xyzzy:[mukesh] => xyzzy:[000000]mukesh.dir.1 | |
517 | * On UNIX, it's simple: just make sure there is a terminating / | |
518 | ||
519 | * Value is nonzero if the string output is different from the input. | |
520 | */ | |
521 | ||
522 | directory_file_name (src, dst) | |
523 | char *src, *dst; | |
524 | { | |
525 | long slen; | |
526 | #ifdef VMS | |
527 | long rlen; | |
528 | char * ptr, * rptr; | |
529 | char bracket; | |
530 | struct FAB fab = cc$rms_fab; | |
531 | struct NAM nam = cc$rms_nam; | |
532 | char esa[NAM$C_MAXRSS]; | |
533 | #endif /* VMS */ | |
534 | ||
535 | slen = strlen (src); | |
536 | #ifdef VMS | |
537 | if (! index (src, '/') | |
538 | && (src[slen - 1] == ']' | |
539 | || src[slen - 1] == ':' | |
540 | || src[slen - 1] == '>')) | |
541 | { | |
542 | /* VMS style - convert [x.y.z] to [x.y]z, [x] to [000000]x */ | |
543 | fab.fab$l_fna = src; | |
544 | fab.fab$b_fns = slen; | |
545 | fab.fab$l_nam = &nam; | |
546 | fab.fab$l_fop = FAB$M_NAM; | |
547 | ||
548 | nam.nam$l_esa = esa; | |
549 | nam.nam$b_ess = sizeof esa; | |
550 | nam.nam$b_nop |= NAM$M_SYNCHK; | |
551 | ||
552 | /* We call SYS$PARSE to handle such things as [--] for us. */ | |
553 | if (SYS$PARSE(&fab, 0, 0) == RMS$_NORMAL) | |
554 | { | |
555 | slen = nam.nam$b_esl; | |
556 | if (esa[slen - 1] == ';' && esa[slen - 2] == '.') | |
557 | slen -= 2; | |
558 | esa[slen] = '\0'; | |
559 | src = esa; | |
560 | } | |
561 | if (src[slen - 1] != ']' && src[slen - 1] != '>') | |
562 | { | |
563 | /* what about when we have logical_name:???? */ | |
564 | if (src[slen - 1] == ':') | |
5e570b75 | 565 | { /* Xlate logical name and see what we get */ |
570d7624 JB |
566 | ptr = strcpy (dst, src); /* upper case for getenv */ |
567 | while (*ptr) | |
568 | { | |
569 | if ('a' <= *ptr && *ptr <= 'z') | |
570 | *ptr -= 040; | |
571 | ptr++; | |
572 | } | |
5e570b75 | 573 | dst[slen - 1] = 0; /* remove colon */ |
570d7624 JB |
574 | if (!(src = egetenv (dst))) |
575 | return 0; | |
576 | /* should we jump to the beginning of this procedure? | |
577 | Good points: allows us to use logical names that xlate | |
578 | to Unix names, | |
579 | Bad points: can be a problem if we just translated to a device | |
580 | name... | |
581 | For now, I'll punt and always expect VMS names, and hope for | |
582 | the best! */ | |
583 | slen = strlen (src); | |
584 | if (src[slen - 1] != ']' && src[slen - 1] != '>') | |
585 | { /* no recursion here! */ | |
586 | strcpy (dst, src); | |
587 | return 0; | |
588 | } | |
589 | } | |
590 | else | |
5e570b75 | 591 | { /* not a directory spec */ |
570d7624 JB |
592 | strcpy (dst, src); |
593 | return 0; | |
594 | } | |
595 | } | |
596 | bracket = src[slen - 1]; | |
597 | ||
598 | /* If bracket is ']' or '>', bracket - 2 is the corresponding | |
599 | opening bracket. */ | |
bfb61299 JB |
600 | ptr = index (src, bracket - 2); |
601 | if (ptr == 0) | |
570d7624 JB |
602 | { /* no opening bracket */ |
603 | strcpy (dst, src); | |
604 | return 0; | |
605 | } | |
606 | if (!(rptr = rindex (src, '.'))) | |
607 | rptr = ptr; | |
608 | slen = rptr - src; | |
609 | strncpy (dst, src, slen); | |
610 | dst[slen] = '\0'; | |
611 | if (*rptr == '.') | |
612 | { | |
613 | dst[slen++] = bracket; | |
614 | dst[slen] = '\0'; | |
615 | } | |
616 | else | |
617 | { | |
618 | /* If we have the top-level of a rooted directory (i.e. xx:[000000]), | |
619 | then translate the device and recurse. */ | |
620 | if (dst[slen - 1] == ':' | |
5e570b75 | 621 | && dst[slen - 2] != ':' /* skip decnet nodes */ |
570d7624 JB |
622 | && strcmp(src + slen, "[000000]") == 0) |
623 | { | |
624 | dst[slen - 1] = '\0'; | |
625 | if ((ptr = egetenv (dst)) | |
626 | && (rlen = strlen (ptr) - 1) > 0 | |
627 | && (ptr[rlen] == ']' || ptr[rlen] == '>') | |
628 | && ptr[rlen - 1] == '.') | |
629 | { | |
72b21817 RS |
630 | char * buf = (char *) alloca (strlen (ptr) + 1); |
631 | strcpy (buf, ptr); | |
632 | buf[rlen - 1] = ']'; | |
633 | buf[rlen] = '\0'; | |
634 | return directory_file_name (buf, dst); | |
570d7624 JB |
635 | } |
636 | else | |
637 | dst[slen - 1] = ':'; | |
638 | } | |
639 | strcat (dst, "[000000]"); | |
640 | slen += 8; | |
641 | } | |
642 | rptr++; | |
643 | rlen = strlen (rptr) - 1; | |
644 | strncat (dst, rptr, rlen); | |
645 | dst[slen + rlen] = '\0'; | |
646 | strcat (dst, ".DIR.1"); | |
647 | return 1; | |
648 | } | |
649 | #endif /* VMS */ | |
650 | /* Process as Unix format: just remove any final slash. | |
651 | But leave "/" unchanged; do not change it to "". */ | |
652 | strcpy (dst, src); | |
125feee8 RS |
653 | #ifdef APOLLO |
654 | /* Handle // as root for apollo's. */ | |
655 | if ((slen > 2 && dst[slen - 1] == '/') | |
656 | || (slen > 1 && dst[0] != '/' && dst[slen - 1] == '/')) | |
657 | dst[slen - 1] = 0; | |
658 | #else | |
4c3c22f3 | 659 | if (slen > 1 |
5e570b75 | 660 | && IS_DIRECTORY_SEP (dst[slen - 1]) |
4592782e RS |
661 | #ifdef DOS_NT |
662 | && !IS_ANY_SEP (dst[slen - 2]) | |
663 | #endif | |
664 | ) | |
570d7624 | 665 | dst[slen - 1] = 0; |
125feee8 | 666 | #endif |
570d7624 JB |
667 | return 1; |
668 | } | |
669 | ||
670 | DEFUN ("directory-file-name", Fdirectory_file_name, Sdirectory_file_name, | |
671 | 1, 1, 0, | |
672 | "Returns the file name of the directory named DIR.\n\ | |
673 | This is the name of the file that holds the data for the directory DIR.\n\ | |
674 | This operation exists because a directory is also a file, but its name as\n\ | |
675 | a directory is different from its name as a file.\n\ | |
676 | In Unix-syntax, this function just removes the final slash.\n\ | |
677 | On VMS, given a VMS-syntax directory name such as \"[X.Y]\",\n\ | |
678 | it returns a file name such as \"[X]Y.DIR.1\".") | |
679 | (directory) | |
680 | Lisp_Object directory; | |
681 | { | |
682 | char *buf; | |
0bf2eed2 | 683 | Lisp_Object handler; |
570d7624 JB |
684 | |
685 | CHECK_STRING (directory, 0); | |
686 | ||
265a9e55 | 687 | if (NILP (directory)) |
570d7624 | 688 | return Qnil; |
0bf2eed2 RS |
689 | |
690 | /* If the file name has special constructs in it, | |
691 | call the corresponding file handler. */ | |
49307295 | 692 | handler = Ffind_file_name_handler (directory, Qdirectory_file_name); |
0bf2eed2 RS |
693 | if (!NILP (handler)) |
694 | return call2 (handler, Qdirectory_file_name, directory); | |
695 | ||
570d7624 JB |
696 | #ifdef VMS |
697 | /* 20 extra chars is insufficient for VMS, since we might perform a | |
698 | logical name translation. an equivalence string can be up to 255 | |
699 | chars long, so grab that much extra space... - sss */ | |
700 | buf = (char *) alloca (XSTRING (directory)->size + 20 + 255); | |
701 | #else | |
702 | buf = (char *) alloca (XSTRING (directory)->size + 20); | |
703 | #endif | |
704 | directory_file_name (XSTRING (directory)->data, buf); | |
705 | return build_string (buf); | |
706 | } | |
707 | ||
708 | DEFUN ("make-temp-name", Fmake_temp_name, Smake_temp_name, 1, 1, 0, | |
709 | "Generate temporary file name (string) starting with PREFIX (a string).\n\ | |
710 | The Emacs process number forms part of the result,\n\ | |
711 | so there is no danger of generating a name being used by another process.") | |
712 | (prefix) | |
713 | Lisp_Object prefix; | |
714 | { | |
715 | Lisp_Object val; | |
716 | val = concat2 (prefix, build_string ("XXXXXX")); | |
717 | mktemp (XSTRING (val)->data); | |
718 | return val; | |
719 | } | |
720 | \f | |
721 | DEFUN ("expand-file-name", Fexpand_file_name, Sexpand_file_name, 1, 2, 0, | |
722 | "Convert FILENAME to absolute, and canonicalize it.\n\ | |
723 | Second arg DEFAULT is directory to start with if FILENAME is relative\n\ | |
724 | (does not start with slash); if DEFAULT is nil or missing,\n\ | |
725 | the current buffer's value of default-directory is used.\n\ | |
b72dea2a JB |
726 | Path components that are `.' are removed, and \n\ |
727 | path components followed by `..' are removed, along with the `..' itself;\n\ | |
728 | note that these simplifications are done without checking the resulting\n\ | |
729 | paths in the file system.\n\ | |
730 | An initial `~/' expands to your home directory.\n\ | |
731 | An initial `~USER/' expands to USER's home directory.\n\ | |
570d7624 JB |
732 | See also the function `substitute-in-file-name'.") |
733 | (name, defalt) | |
734 | Lisp_Object name, defalt; | |
735 | { | |
736 | unsigned char *nm; | |
737 | ||
738 | register unsigned char *newdir, *p, *o; | |
739 | int tlen; | |
740 | unsigned char *target; | |
741 | struct passwd *pw; | |
570d7624 JB |
742 | #ifdef VMS |
743 | unsigned char * colon = 0; | |
744 | unsigned char * close = 0; | |
745 | unsigned char * slash = 0; | |
746 | unsigned char * brack = 0; | |
747 | int lbrack = 0, rbrack = 0; | |
748 | int dots = 0; | |
749 | #endif /* VMS */ | |
5e570b75 RS |
750 | #ifdef DOS_NT |
751 | /* Demacs 1.1.2 91/10/20 Manabu Higashida */ | |
4c3c22f3 RS |
752 | int drive = -1; |
753 | int relpath = 0; | |
754 | unsigned char *tmp, *defdir; | |
5e570b75 | 755 | #endif /* DOS_NT */ |
0bf2eed2 | 756 | Lisp_Object handler; |
570d7624 JB |
757 | |
758 | CHECK_STRING (name, 0); | |
759 | ||
0bf2eed2 RS |
760 | /* If the file name has special constructs in it, |
761 | call the corresponding file handler. */ | |
49307295 | 762 | handler = Ffind_file_name_handler (name, Qexpand_file_name); |
0bf2eed2 | 763 | if (!NILP (handler)) |
09121adc | 764 | return call3 (handler, Qexpand_file_name, name, defalt); |
58fc9587 RS |
765 | |
766 | /* Use the buffer's default-directory if DEFALT is omitted. */ | |
767 | if (NILP (defalt)) | |
768 | defalt = current_buffer->directory; | |
769 | CHECK_STRING (defalt, 1); | |
770 | ||
273e0829 RS |
771 | if (!NILP (defalt)) |
772 | { | |
773 | handler = Ffind_file_name_handler (defalt, Qexpand_file_name); | |
774 | if (!NILP (handler)) | |
775 | return call3 (handler, Qexpand_file_name, name, defalt); | |
776 | } | |
0bf2eed2 | 777 | |
5e570b75 RS |
778 | o = XSTRING (defalt)->data; |
779 | ||
f14b1c68 JB |
780 | /* Make sure DEFALT is properly expanded. |
781 | It would be better to do this down below where we actually use | |
782 | defalt. Unfortunately, calling Fexpand_file_name recursively | |
783 | could invoke GC, and the strings might be relocated. This would | |
784 | be annoying because we have pointers into strings lying around | |
785 | that would need adjusting, and people would add new pointers to | |
786 | the code and forget to adjust them, resulting in intermittent bugs. | |
4ad827c5 RS |
787 | Putting this call here avoids all that crud. |
788 | ||
789 | The EQ test avoids infinite recursion. */ | |
790 | if (! NILP (defalt) && !EQ (defalt, name) | |
791 | /* This saves time in a common case. */ | |
5e570b75 RS |
792 | && ! (XSTRING (defalt)->size >= 3 |
793 | && IS_DIRECTORY_SEP (XSTRING (defalt)->data[0]) | |
794 | && IS_DEVICE_SEP (XSTRING (defalt)->data[1]))) | |
f14b1c68 JB |
795 | { |
796 | struct gcpro gcpro1; | |
797 | ||
798 | GCPRO1 (name); | |
799 | defalt = Fexpand_file_name (defalt, Qnil); | |
800 | UNGCPRO; | |
801 | } | |
802 | ||
570d7624 JB |
803 | #ifdef VMS |
804 | /* Filenames on VMS are always upper case. */ | |
805 | name = Fupcase (name); | |
806 | #endif | |
4c3c22f3 RS |
807 | #ifdef FILE_SYSTEM_CASE |
808 | name = FILE_SYSTEM_CASE (name); | |
809 | #endif | |
570d7624 JB |
810 | |
811 | nm = XSTRING (name)->data; | |
812 | ||
4c3c22f3 | 813 | #ifdef MSDOS |
a5a1cc06 RS |
814 | /* First map all backslashes to slashes. */ |
815 | dostounix_filename (nm = strcpy (alloca (strlen (nm) + 1), nm)); | |
5e570b75 | 816 | #endif |
a5a1cc06 | 817 | |
5e570b75 | 818 | #ifdef DOS_NT |
a5a1cc06 | 819 | /* Now strip drive name. */ |
4c3c22f3 RS |
820 | { |
821 | unsigned char *colon = rindex (nm, ':'); | |
822 | if (colon) | |
823 | if (nm == colon) | |
824 | nm++; | |
825 | else | |
826 | { | |
3c455a3b | 827 | drive = colon[-1]; |
4c3c22f3 | 828 | nm = colon + 1; |
5e570b75 | 829 | if (!IS_DIRECTORY_SEP (*nm)) |
4c3c22f3 RS |
830 | { |
831 | defdir = alloca (MAXPATHLEN + 1); | |
39d2afa7 | 832 | relpath = getdefdir (tolower (drive) - 'a' + 1, defdir); |
4c3c22f3 | 833 | } |
5e570b75 | 834 | } |
4c3c22f3 | 835 | } |
5e570b75 | 836 | #endif /* DOS_NT */ |
4c3c22f3 | 837 | |
3be3c08e RS |
838 | /* Handle // and /~ in middle of file name |
839 | by discarding everything through the first / of that sequence. */ | |
840 | p = nm; | |
841 | while (*p) | |
842 | { | |
843 | /* Since we know the path is absolute, we can assume that each | |
844 | element starts with a "/". */ | |
845 | ||
846 | /* "//" anywhere isn't necessarily hairy; we just start afresh | |
847 | with the second slash. */ | |
848 | if (IS_DIRECTORY_SEP (p[0]) && IS_DIRECTORY_SEP (p[1]) | |
849 | #if defined (APOLLO) || defined (WINDOWSNT) | |
850 | /* // at start of filename is meaningful on Apollo | |
851 | and WindowsNT systems */ | |
852 | && nm != p | |
853 | #endif /* APOLLO || WINDOWSNT */ | |
854 | ) | |
855 | nm = p + 1; | |
856 | ||
857 | /* "~" is hairy as the start of any path element. */ | |
858 | if (IS_DIRECTORY_SEP (p[0]) && p[1] == '~') | |
859 | nm = p + 1; | |
860 | ||
861 | p++; | |
862 | } | |
863 | ||
570d7624 JB |
864 | /* If nm is absolute, flush ...// and detect /./ and /../. |
865 | If no /./ or /../ we can return right away. */ | |
866 | if ( | |
5e570b75 | 867 | IS_DIRECTORY_SEP (nm[0]) |
570d7624 JB |
868 | #ifdef VMS |
869 | || index (nm, ':') | |
870 | #endif /* VMS */ | |
871 | ) | |
872 | { | |
f14b1c68 JB |
873 | /* If it turns out that the filename we want to return is just a |
874 | suffix of FILENAME, we don't need to go through and edit | |
875 | things; we just need to construct a new string using data | |
876 | starting at the middle of FILENAME. If we set lose to a | |
877 | non-zero value, that means we've discovered that we can't do | |
878 | that cool trick. */ | |
879 | int lose = 0; | |
880 | ||
570d7624 | 881 | p = nm; |
570d7624 JB |
882 | while (*p) |
883 | { | |
c77d647e JB |
884 | /* Since we know the path is absolute, we can assume that each |
885 | element starts with a "/". */ | |
886 | ||
c77d647e | 887 | /* "." and ".." are hairy. */ |
5e570b75 | 888 | if (IS_DIRECTORY_SEP (p[0]) |
c77d647e | 889 | && p[1] == '.' |
5e570b75 | 890 | && (IS_DIRECTORY_SEP (p[2]) |
c77d647e | 891 | || p[2] == 0 |
5e570b75 | 892 | || (p[2] == '.' && (IS_DIRECTORY_SEP (p[3]) |
c77d647e | 893 | || p[3] == 0)))) |
570d7624 JB |
894 | lose = 1; |
895 | #ifdef VMS | |
896 | if (p[0] == '\\') | |
897 | lose = 1; | |
898 | if (p[0] == '/') { | |
899 | /* if dev:[dir]/, move nm to / */ | |
900 | if (!slash && p > nm && (brack || colon)) { | |
901 | nm = (brack ? brack + 1 : colon + 1); | |
902 | lbrack = rbrack = 0; | |
903 | brack = 0; | |
904 | colon = 0; | |
905 | } | |
906 | slash = p; | |
907 | } | |
908 | if (p[0] == '-') | |
909 | #ifndef VMS4_4 | |
910 | /* VMS pre V4.4,convert '-'s in filenames. */ | |
911 | if (lbrack == rbrack) | |
912 | { | |
5e570b75 | 913 | if (dots < 2) /* this is to allow negative version numbers */ |
570d7624 JB |
914 | p[0] = '_'; |
915 | } | |
916 | else | |
917 | #endif /* VMS4_4 */ | |
918 | if (lbrack > rbrack && | |
919 | ((p[-1] == '.' || p[-1] == '[' || p[-1] == '<') && | |
920 | (p[1] == '.' || p[1] == ']' || p[1] == '>'))) | |
921 | lose = 1; | |
922 | #ifndef VMS4_4 | |
923 | else | |
924 | p[0] = '_'; | |
925 | #endif /* VMS4_4 */ | |
926 | /* count open brackets, reset close bracket pointer */ | |
927 | if (p[0] == '[' || p[0] == '<') | |
928 | lbrack++, brack = 0; | |
929 | /* count close brackets, set close bracket pointer */ | |
930 | if (p[0] == ']' || p[0] == '>') | |
931 | rbrack++, brack = p; | |
932 | /* detect ][ or >< */ | |
933 | if ((p[0] == ']' || p[0] == '>') && (p[1] == '[' || p[1] == '<')) | |
934 | lose = 1; | |
935 | if ((p[0] == ':' || p[0] == ']' || p[0] == '>') && p[1] == '~') | |
936 | nm = p + 1, lose = 1; | |
937 | if (p[0] == ':' && (colon || slash)) | |
938 | /* if dev1:[dir]dev2:, move nm to dev2: */ | |
939 | if (brack) | |
940 | { | |
941 | nm = brack + 1; | |
942 | brack = 0; | |
943 | } | |
944 | /* if /pathname/dev:, move nm to dev: */ | |
945 | else if (slash) | |
946 | nm = slash + 1; | |
947 | /* if node::dev:, move colon following dev */ | |
948 | else if (colon && colon[-1] == ':') | |
949 | colon = p; | |
950 | /* if dev1:dev2:, move nm to dev2: */ | |
951 | else if (colon && colon[-1] != ':') | |
952 | { | |
953 | nm = colon + 1; | |
954 | colon = 0; | |
955 | } | |
956 | if (p[0] == ':' && !colon) | |
957 | { | |
958 | if (p[1] == ':') | |
959 | p++; | |
960 | colon = p; | |
961 | } | |
962 | if (lbrack == rbrack) | |
963 | if (p[0] == ';') | |
964 | dots = 2; | |
965 | else if (p[0] == '.') | |
966 | dots++; | |
967 | #endif /* VMS */ | |
968 | p++; | |
969 | } | |
970 | if (!lose) | |
971 | { | |
972 | #ifdef VMS | |
973 | if (index (nm, '/')) | |
974 | return build_string (sys_translate_unix (nm)); | |
975 | #endif /* VMS */ | |
5e570b75 | 976 | #ifndef DOS_NT |
570d7624 JB |
977 | if (nm == XSTRING (name)->data) |
978 | return name; | |
979 | return build_string (nm); | |
5e570b75 | 980 | #endif /* not DOS_NT */ |
570d7624 JB |
981 | } |
982 | } | |
983 | ||
984 | /* Now determine directory to start with and put it in newdir */ | |
985 | ||
986 | newdir = 0; | |
987 | ||
988 | if (nm[0] == '~') /* prefix ~ */ | |
c77d647e | 989 | { |
5e570b75 | 990 | if (IS_DIRECTORY_SEP (nm[1]) |
570d7624 | 991 | #ifdef VMS |
c77d647e | 992 | || nm[1] == ':' |
5e570b75 | 993 | #endif /* VMS */ |
c77d647e JB |
994 | || nm[1] == 0) /* ~ by itself */ |
995 | { | |
996 | if (!(newdir = (unsigned char *) egetenv ("HOME"))) | |
997 | newdir = (unsigned char *) ""; | |
5e570b75 | 998 | #ifdef DOS_NT |
3c455a3b KH |
999 | /* Problem when expanding "~\" if HOME is not on current drive. |
1000 | Ulrich Leodolter, Wed Jan 11 10:20:35 1995 */ | |
1001 | if (newdir[1] == ':') | |
1002 | drive = newdir[0]; | |
4c3c22f3 RS |
1003 | dostounix_filename (newdir); |
1004 | #endif | |
c77d647e | 1005 | nm++; |
570d7624 | 1006 | #ifdef VMS |
c77d647e | 1007 | nm++; /* Don't leave the slash in nm. */ |
5e570b75 | 1008 | #endif /* VMS */ |
c77d647e JB |
1009 | } |
1010 | else /* ~user/filename */ | |
1011 | { | |
5e570b75 | 1012 | for (p = nm; *p && (!IS_DIRECTORY_SEP (*p) |
570d7624 | 1013 | #ifdef VMS |
c77d647e | 1014 | && *p != ':' |
5e570b75 | 1015 | #endif /* VMS */ |
c77d647e JB |
1016 | ); p++); |
1017 | o = (unsigned char *) alloca (p - nm + 1); | |
1018 | bcopy ((char *) nm, o, p - nm); | |
1019 | o [p - nm] = 0; | |
1020 | ||
5e570b75 RS |
1021 | #ifdef WINDOWSNT |
1022 | newdir = (unsigned char *) egetenv ("HOME"); | |
1023 | dostounix_filename (newdir); | |
1024 | #else /* not WINDOWSNT */ | |
c77d647e JB |
1025 | pw = (struct passwd *) getpwnam (o + 1); |
1026 | if (pw) | |
1027 | { | |
1028 | newdir = (unsigned char *) pw -> pw_dir; | |
570d7624 | 1029 | #ifdef VMS |
c77d647e | 1030 | nm = p + 1; /* skip the terminator */ |
570d7624 | 1031 | #else |
c77d647e | 1032 | nm = p; |
5e570b75 | 1033 | #endif /* VMS */ |
c77d647e | 1034 | } |
5e570b75 | 1035 | #endif /* not WINDOWSNT */ |
e5d77022 | 1036 | |
c77d647e JB |
1037 | /* If we don't find a user of that name, leave the name |
1038 | unchanged; don't move nm forward to p. */ | |
1039 | } | |
1040 | } | |
570d7624 | 1041 | |
5e570b75 | 1042 | if (!IS_ANY_SEP (nm[0]) |
570d7624 JB |
1043 | #ifdef VMS |
1044 | && !index (nm, ':') | |
1045 | #endif /* not VMS */ | |
5e570b75 | 1046 | #ifdef DOS_NT |
4c3c22f3 | 1047 | && drive == -1 |
5e570b75 | 1048 | #endif /* DOS_NT */ |
570d7624 JB |
1049 | && !newdir) |
1050 | { | |
570d7624 JB |
1051 | newdir = XSTRING (defalt)->data; |
1052 | } | |
1053 | ||
5e570b75 | 1054 | #ifdef DOS_NT |
4c3c22f3 RS |
1055 | if (newdir == 0 && relpath) |
1056 | newdir = defdir; | |
5e570b75 | 1057 | #endif /* DOS_NT */ |
bfb61299 JB |
1058 | if (newdir != 0) |
1059 | { | |
1060 | /* Get rid of any slash at the end of newdir. */ | |
1061 | int length = strlen (newdir); | |
eabf01d4 RS |
1062 | /* Adding `length > 1 &&' makes ~ expand into / when homedir |
1063 | is the root dir. People disagree about whether that is right. | |
1064 | Anyway, we can't take the risk of this change now. */ | |
3c455a3b | 1065 | #ifdef DOS_NT |
4c3c22f3 RS |
1066 | if (newdir[1] != ':' && length > 1) |
1067 | #endif | |
5e570b75 | 1068 | if (IS_DIRECTORY_SEP (newdir[length - 1])) |
bfb61299 JB |
1069 | { |
1070 | unsigned char *temp = (unsigned char *) alloca (length); | |
1071 | bcopy (newdir, temp, length - 1); | |
1072 | temp[length - 1] = 0; | |
1073 | newdir = temp; | |
1074 | } | |
1075 | tlen = length + 1; | |
1076 | } | |
1077 | else | |
1078 | tlen = 0; | |
570d7624 | 1079 | |
bfb61299 JB |
1080 | /* Now concatenate the directory and name to new space in the stack frame */ |
1081 | tlen += strlen (nm) + 1; | |
5e570b75 RS |
1082 | #ifdef DOS_NT |
1083 | /* Add reserved space for drive name. (The Microsoft x86 compiler | |
1084 | produces incorrect code if the following two lines are combined.) */ | |
1085 | target = (unsigned char *) alloca (tlen + 2); | |
1086 | target += 2; | |
1087 | #else /* not DOS_NT */ | |
570d7624 | 1088 | target = (unsigned char *) alloca (tlen); |
5e570b75 | 1089 | #endif /* not DOS_NT */ |
570d7624 JB |
1090 | *target = 0; |
1091 | ||
1092 | if (newdir) | |
1093 | { | |
1094 | #ifndef VMS | |
5e570b75 | 1095 | if (nm[0] == 0 || IS_DIRECTORY_SEP (nm[0])) |
570d7624 JB |
1096 | strcpy (target, newdir); |
1097 | else | |
1098 | #endif | |
c77d647e | 1099 | file_name_as_directory (target, newdir); |
570d7624 JB |
1100 | } |
1101 | ||
1102 | strcat (target, nm); | |
1103 | #ifdef VMS | |
1104 | if (index (target, '/')) | |
1105 | strcpy (target, sys_translate_unix (target)); | |
1106 | #endif /* VMS */ | |
1107 | ||
c77d647e | 1108 | /* Now canonicalize by removing /. and /foo/.. if they appear. */ |
570d7624 JB |
1109 | |
1110 | p = target; | |
1111 | o = target; | |
1112 | ||
1113 | while (*p) | |
1114 | { | |
1115 | #ifdef VMS | |
1116 | if (*p != ']' && *p != '>' && *p != '-') | |
1117 | { | |
1118 | if (*p == '\\') | |
1119 | p++; | |
1120 | *o++ = *p++; | |
1121 | } | |
1122 | else if ((p[0] == ']' || p[0] == '>') && p[0] == p[1] + 2) | |
1123 | /* brackets are offset from each other by 2 */ | |
1124 | { | |
1125 | p += 2; | |
1126 | if (*p != '.' && *p != '-' && o[-1] != '.') | |
1127 | /* convert [foo][bar] to [bar] */ | |
1128 | while (o[-1] != '[' && o[-1] != '<') | |
1129 | o--; | |
1130 | else if (*p == '-' && *o != '.') | |
1131 | *--p = '.'; | |
1132 | } | |
1133 | else if (p[0] == '-' && o[-1] == '.' && | |
1134 | (p[1] == '.' || p[1] == ']' || p[1] == '>')) | |
1135 | /* flush .foo.- ; leave - if stopped by '[' or '<' */ | |
1136 | { | |
1137 | do | |
1138 | o--; | |
1139 | while (o[-1] != '.' && o[-1] != '[' && o[-1] != '<'); | |
5e570b75 | 1140 | if (p[1] == '.') /* foo.-.bar ==> bar. */ |
570d7624 JB |
1141 | p += 2; |
1142 | else if (o[-1] == '.') /* '.foo.-]' ==> ']' */ | |
1143 | p++, o--; | |
1144 | /* else [foo.-] ==> [-] */ | |
1145 | } | |
1146 | else | |
1147 | { | |
1148 | #ifndef VMS4_4 | |
1149 | if (*p == '-' && | |
1150 | o[-1] != '[' && o[-1] != '<' && o[-1] != '.' && | |
1151 | p[1] != ']' && p[1] != '>' && p[1] != '.') | |
1152 | *p = '_'; | |
1153 | #endif /* VMS4_4 */ | |
1154 | *o++ = *p++; | |
1155 | } | |
1156 | #else /* not VMS */ | |
5e570b75 RS |
1157 | if (!IS_DIRECTORY_SEP (*p)) |
1158 | { | |
570d7624 JB |
1159 | *o++ = *p++; |
1160 | } | |
c0fa5a0b KH |
1161 | else if (IS_DIRECTORY_SEP (p[0]) && IS_DIRECTORY_SEP (p[1]) |
1162 | #if defined (APOLLO) || defined (WINDOWSNT) | |
1163 | /* // at start of filename is meaningful in Apollo | |
1164 | and WindowsNT systems */ | |
570d7624 JB |
1165 | && o != target |
1166 | #endif /* APOLLO */ | |
1167 | ) | |
1168 | { | |
1169 | o = target; | |
1170 | p++; | |
1171 | } | |
5e570b75 | 1172 | else if (IS_DIRECTORY_SEP (p[0]) |
c77d647e | 1173 | && p[1] == '.' |
5e570b75 | 1174 | && (IS_DIRECTORY_SEP (p[2]) |
c77d647e JB |
1175 | || p[2] == 0)) |
1176 | { | |
1177 | /* If "/." is the entire filename, keep the "/". Otherwise, | |
1178 | just delete the whole "/.". */ | |
1179 | if (o == target && p[2] == '\0') | |
1180 | *o++ = *p; | |
1181 | p += 2; | |
1182 | } | |
c0fa5a0b | 1183 | else if (IS_DIRECTORY_SEP (p[0]) && p[1] == '.' && p[2] == '.' |
570d7624 JB |
1184 | /* `/../' is the "superroot" on certain file systems. */ |
1185 | && o != target | |
5e570b75 | 1186 | && (IS_DIRECTORY_SEP (p[3]) || p[3] == 0)) |
570d7624 | 1187 | { |
5e570b75 | 1188 | while (o != target && (--o) && !IS_DIRECTORY_SEP (*o)) |
570d7624 | 1189 | ; |
c0fa5a0b KH |
1190 | #if defined (APOLLO) || defined (WINDOWSNT) |
1191 | if (o == target + 1 | |
1192 | && IS_DIRECTORY_SEP (o[-1]) && IS_DIRECTORY_SEP (o[0])) | |
5e570b75 RS |
1193 | ++o; |
1194 | else | |
c0fa5a0b | 1195 | #endif /* APOLLO || WINDOWSNT */ |
5e570b75 | 1196 | if (o == target && IS_ANY_SEP (*o)) |
570d7624 JB |
1197 | ++o; |
1198 | p += 3; | |
1199 | } | |
1200 | else | |
5e570b75 | 1201 | { |
570d7624 JB |
1202 | *o++ = *p++; |
1203 | } | |
1204 | #endif /* not VMS */ | |
1205 | } | |
1206 | ||
5e570b75 | 1207 | #ifdef DOS_NT |
4c3c22f3 | 1208 | /* at last, set drive name. */ |
5e570b75 RS |
1209 | if (target[1] != ':' |
1210 | #ifdef WINDOWSNT | |
1211 | /* Allow network paths that look like "\\foo" */ | |
1212 | && !(IS_DIRECTORY_SEP (target[0]) && IS_DIRECTORY_SEP (target[1])) | |
1213 | #endif /* WINDOWSNT */ | |
1214 | ) | |
4c3c22f3 RS |
1215 | { |
1216 | target -= 2; | |
3c455a3b | 1217 | target[0] = (drive < 0 ? getdisk () + 'A' : drive); |
4c3c22f3 RS |
1218 | target[1] = ':'; |
1219 | } | |
5e570b75 | 1220 | #endif /* DOS_NT */ |
4c3c22f3 | 1221 | |
570d7624 JB |
1222 | return make_string (target, o - target); |
1223 | } | |
5e570b75 | 1224 | |
570d7624 | 1225 | #if 0 |
5e570b75 | 1226 | /* Changed this DEFUN to a DEAFUN, so as not to confuse `make-docfile'. */ |
e5d77022 | 1227 | DEAFUN ("expand-file-name", Fexpand_file_name, Sexpand_file_name, 1, 2, 0, |
570d7624 JB |
1228 | "Convert FILENAME to absolute, and canonicalize it.\n\ |
1229 | Second arg DEFAULT is directory to start with if FILENAME is relative\n\ | |
1230 | (does not start with slash); if DEFAULT is nil or missing,\n\ | |
1231 | the current buffer's value of default-directory is used.\n\ | |
1232 | Filenames containing `.' or `..' as components are simplified;\n\ | |
1233 | initial `~/' expands to your home directory.\n\ | |
1234 | See also the function `substitute-in-file-name'.") | |
1235 | (name, defalt) | |
1236 | Lisp_Object name, defalt; | |
1237 | { | |
1238 | unsigned char *nm; | |
1239 | ||
1240 | register unsigned char *newdir, *p, *o; | |
1241 | int tlen; | |
1242 | unsigned char *target; | |
1243 | struct passwd *pw; | |
1244 | int lose; | |
1245 | #ifdef VMS | |
1246 | unsigned char * colon = 0; | |
1247 | unsigned char * close = 0; | |
1248 | unsigned char * slash = 0; | |
1249 | unsigned char * brack = 0; | |
1250 | int lbrack = 0, rbrack = 0; | |
1251 | int dots = 0; | |
1252 | #endif /* VMS */ | |
1253 | ||
1254 | CHECK_STRING (name, 0); | |
1255 | ||
1256 | #ifdef VMS | |
1257 | /* Filenames on VMS are always upper case. */ | |
1258 | name = Fupcase (name); | |
1259 | #endif | |
1260 | ||
1261 | nm = XSTRING (name)->data; | |
1262 | ||
1263 | /* If nm is absolute, flush ...// and detect /./ and /../. | |
1264 | If no /./ or /../ we can return right away. */ | |
1265 | if ( | |
1266 | nm[0] == '/' | |
1267 | #ifdef VMS | |
1268 | || index (nm, ':') | |
1269 | #endif /* VMS */ | |
1270 | ) | |
1271 | { | |
1272 | p = nm; | |
1273 | lose = 0; | |
1274 | while (*p) | |
1275 | { | |
1276 | if (p[0] == '/' && p[1] == '/' | |
1277 | #ifdef APOLLO | |
1278 | /* // at start of filename is meaningful on Apollo system */ | |
1279 | && nm != p | |
1280 | #endif /* APOLLO */ | |
1281 | ) | |
1282 | nm = p + 1; | |
1283 | if (p[0] == '/' && p[1] == '~') | |
1284 | nm = p + 1, lose = 1; | |
1285 | if (p[0] == '/' && p[1] == '.' | |
1286 | && (p[2] == '/' || p[2] == 0 | |
1287 | || (p[2] == '.' && (p[3] == '/' || p[3] == 0)))) | |
1288 | lose = 1; | |
1289 | #ifdef VMS | |
1290 | if (p[0] == '\\') | |
1291 | lose = 1; | |
1292 | if (p[0] == '/') { | |
1293 | /* if dev:[dir]/, move nm to / */ | |
1294 | if (!slash && p > nm && (brack || colon)) { | |
1295 | nm = (brack ? brack + 1 : colon + 1); | |
1296 | lbrack = rbrack = 0; | |
1297 | brack = 0; | |
1298 | colon = 0; | |
1299 | } | |
1300 | slash = p; | |
1301 | } | |
1302 | if (p[0] == '-') | |
1303 | #ifndef VMS4_4 | |
1304 | /* VMS pre V4.4,convert '-'s in filenames. */ | |
1305 | if (lbrack == rbrack) | |
1306 | { | |
5e570b75 | 1307 | if (dots < 2) /* this is to allow negative version numbers */ |
570d7624 JB |
1308 | p[0] = '_'; |
1309 | } | |
1310 | else | |
1311 | #endif /* VMS4_4 */ | |
1312 | if (lbrack > rbrack && | |
1313 | ((p[-1] == '.' || p[-1] == '[' || p[-1] == '<') && | |
1314 | (p[1] == '.' || p[1] == ']' || p[1] == '>'))) | |
1315 | lose = 1; | |
1316 | #ifndef VMS4_4 | |
1317 | else | |
1318 | p[0] = '_'; | |
1319 | #endif /* VMS4_4 */ | |
1320 | /* count open brackets, reset close bracket pointer */ | |
1321 | if (p[0] == '[' || p[0] == '<') | |
1322 | lbrack++, brack = 0; | |
1323 | /* count close brackets, set close bracket pointer */ | |
1324 | if (p[0] == ']' || p[0] == '>') | |
1325 | rbrack++, brack = p; | |
1326 | /* detect ][ or >< */ | |
1327 | if ((p[0] == ']' || p[0] == '>') && (p[1] == '[' || p[1] == '<')) | |
1328 | lose = 1; | |
1329 | if ((p[0] == ':' || p[0] == ']' || p[0] == '>') && p[1] == '~') | |
1330 | nm = p + 1, lose = 1; | |
1331 | if (p[0] == ':' && (colon || slash)) | |
1332 | /* if dev1:[dir]dev2:, move nm to dev2: */ | |
1333 | if (brack) | |
1334 | { | |
1335 | nm = brack + 1; | |
1336 | brack = 0; | |
1337 | } | |
1338 | /* if /pathname/dev:, move nm to dev: */ | |
1339 | else if (slash) | |
1340 | nm = slash + 1; | |
1341 | /* if node::dev:, move colon following dev */ | |
1342 | else if (colon && colon[-1] == ':') | |
1343 | colon = p; | |
1344 | /* if dev1:dev2:, move nm to dev2: */ | |
1345 | else if (colon && colon[-1] != ':') | |
1346 | { | |
1347 | nm = colon + 1; | |
1348 | colon = 0; | |
1349 | } | |
1350 | if (p[0] == ':' && !colon) | |
1351 | { | |
1352 | if (p[1] == ':') | |
1353 | p++; | |
1354 | colon = p; | |
1355 | } | |
1356 | if (lbrack == rbrack) | |
1357 | if (p[0] == ';') | |
1358 | dots = 2; | |
1359 | else if (p[0] == '.') | |
1360 | dots++; | |
1361 | #endif /* VMS */ | |
1362 | p++; | |
1363 | } | |
1364 | if (!lose) | |
1365 | { | |
1366 | #ifdef VMS | |
1367 | if (index (nm, '/')) | |
1368 | return build_string (sys_translate_unix (nm)); | |
1369 | #endif /* VMS */ | |
1370 | if (nm == XSTRING (name)->data) | |
1371 | return name; | |
1372 | return build_string (nm); | |
1373 | } | |
1374 | } | |
1375 | ||
1376 | /* Now determine directory to start with and put it in NEWDIR */ | |
1377 | ||
1378 | newdir = 0; | |
1379 | ||
5e570b75 | 1380 | if (nm[0] == '~') /* prefix ~ */ |
570d7624 JB |
1381 | if (nm[1] == '/' |
1382 | #ifdef VMS | |
1383 | || nm[1] == ':' | |
1384 | #endif /* VMS */ | |
1385 | || nm[1] == 0)/* ~/filename */ | |
1386 | { | |
1387 | if (!(newdir = (unsigned char *) egetenv ("HOME"))) | |
1388 | newdir = (unsigned char *) ""; | |
1389 | nm++; | |
1390 | #ifdef VMS | |
5e570b75 | 1391 | nm++; /* Don't leave the slash in nm. */ |
570d7624 JB |
1392 | #endif /* VMS */ |
1393 | } | |
1394 | else /* ~user/filename */ | |
1395 | { | |
1396 | /* Get past ~ to user */ | |
1397 | unsigned char *user = nm + 1; | |
1398 | /* Find end of name. */ | |
1399 | unsigned char *ptr = (unsigned char *) index (user, '/'); | |
1400 | int len = ptr ? ptr - user : strlen (user); | |
1401 | #ifdef VMS | |
1402 | unsigned char *ptr1 = index (user, ':'); | |
1403 | if (ptr1 != 0 && ptr1 - user < len) | |
1404 | len = ptr1 - user; | |
5e570b75 | 1405 | #endif /* VMS */ |
570d7624 JB |
1406 | /* Copy the user name into temp storage. */ |
1407 | o = (unsigned char *) alloca (len + 1); | |
1408 | bcopy ((char *) user, o, len); | |
1409 | o[len] = 0; | |
1410 | ||
1411 | /* Look up the user name. */ | |
1412 | pw = (struct passwd *) getpwnam (o + 1); | |
1413 | if (!pw) | |
1414 | error ("\"%s\" isn't a registered user", o + 1); | |
1415 | ||
1416 | newdir = (unsigned char *) pw->pw_dir; | |
1417 | ||
1418 | /* Discard the user name from NM. */ | |
1419 | nm += len; | |
1420 | } | |
1421 | ||
1422 | if (nm[0] != '/' | |
1423 | #ifdef VMS | |
1424 | && !index (nm, ':') | |
1425 | #endif /* not VMS */ | |
1426 | && !newdir) | |
1427 | { | |
265a9e55 | 1428 | if (NILP (defalt)) |
570d7624 JB |
1429 | defalt = current_buffer->directory; |
1430 | CHECK_STRING (defalt, 1); | |
1431 | newdir = XSTRING (defalt)->data; | |
1432 | } | |
1433 | ||
1434 | /* Now concatenate the directory and name to new space in the stack frame */ | |
1435 | ||
1436 | tlen = (newdir ? strlen (newdir) + 1 : 0) + strlen (nm) + 1; | |
1437 | target = (unsigned char *) alloca (tlen); | |
1438 | *target = 0; | |
1439 | ||
1440 | if (newdir) | |
1441 | { | |
1442 | #ifndef VMS | |
1443 | if (nm[0] == 0 || nm[0] == '/') | |
1444 | strcpy (target, newdir); | |
1445 | else | |
1446 | #endif | |
1447 | file_name_as_directory (target, newdir); | |
1448 | } | |
1449 | ||
1450 | strcat (target, nm); | |
1451 | #ifdef VMS | |
1452 | if (index (target, '/')) | |
1453 | strcpy (target, sys_translate_unix (target)); | |
1454 | #endif /* VMS */ | |
1455 | ||
1456 | /* Now canonicalize by removing /. and /foo/.. if they appear */ | |
1457 | ||
1458 | p = target; | |
1459 | o = target; | |
1460 | ||
1461 | while (*p) | |
1462 | { | |
1463 | #ifdef VMS | |
1464 | if (*p != ']' && *p != '>' && *p != '-') | |
1465 | { | |
1466 | if (*p == '\\') | |
1467 | p++; | |
1468 | *o++ = *p++; | |
1469 | } | |
1470 | else if ((p[0] == ']' || p[0] == '>') && p[0] == p[1] + 2) | |
1471 | /* brackets are offset from each other by 2 */ | |
1472 | { | |
1473 | p += 2; | |
1474 | if (*p != '.' && *p != '-' && o[-1] != '.') | |
1475 | /* convert [foo][bar] to [bar] */ | |
1476 | while (o[-1] != '[' && o[-1] != '<') | |
1477 | o--; | |
1478 | else if (*p == '-' && *o != '.') | |
1479 | *--p = '.'; | |
1480 | } | |
1481 | else if (p[0] == '-' && o[-1] == '.' && | |
1482 | (p[1] == '.' || p[1] == ']' || p[1] == '>')) | |
1483 | /* flush .foo.- ; leave - if stopped by '[' or '<' */ | |
1484 | { | |
1485 | do | |
1486 | o--; | |
1487 | while (o[-1] != '.' && o[-1] != '[' && o[-1] != '<'); | |
5e570b75 | 1488 | if (p[1] == '.') /* foo.-.bar ==> bar. */ |
570d7624 JB |
1489 | p += 2; |
1490 | else if (o[-1] == '.') /* '.foo.-]' ==> ']' */ | |
1491 | p++, o--; | |
1492 | /* else [foo.-] ==> [-] */ | |
1493 | } | |
1494 | else | |
1495 | { | |
1496 | #ifndef VMS4_4 | |
1497 | if (*p == '-' && | |
1498 | o[-1] != '[' && o[-1] != '<' && o[-1] != '.' && | |
1499 | p[1] != ']' && p[1] != '>' && p[1] != '.') | |
1500 | *p = '_'; | |
1501 | #endif /* VMS4_4 */ | |
1502 | *o++ = *p++; | |
1503 | } | |
1504 | #else /* not VMS */ | |
1505 | if (*p != '/') | |
5e570b75 | 1506 | { |
570d7624 JB |
1507 | *o++ = *p++; |
1508 | } | |
1509 | else if (!strncmp (p, "//", 2) | |
1510 | #ifdef APOLLO | |
1511 | /* // at start of filename is meaningful in Apollo system */ | |
1512 | && o != target | |
1513 | #endif /* APOLLO */ | |
1514 | ) | |
1515 | { | |
1516 | o = target; | |
1517 | p++; | |
1518 | } | |
1519 | else if (p[0] == '/' && p[1] == '.' && | |
1520 | (p[2] == '/' || p[2] == 0)) | |
1521 | p += 2; | |
1522 | else if (!strncmp (p, "/..", 3) | |
1523 | /* `/../' is the "superroot" on certain file systems. */ | |
1524 | && o != target | |
1525 | && (p[3] == '/' || p[3] == 0)) | |
1526 | { | |
1527 | while (o != target && *--o != '/') | |
1528 | ; | |
1529 | #ifdef APOLLO | |
1530 | if (o == target + 1 && o[-1] == '/' && o[0] == '/') | |
1531 | ++o; | |
1532 | else | |
1533 | #endif /* APOLLO */ | |
1534 | if (o == target && *o == '/') | |
1535 | ++o; | |
1536 | p += 3; | |
1537 | } | |
1538 | else | |
5e570b75 | 1539 | { |
570d7624 JB |
1540 | *o++ = *p++; |
1541 | } | |
1542 | #endif /* not VMS */ | |
1543 | } | |
1544 | ||
1545 | return make_string (target, o - target); | |
1546 | } | |
1547 | #endif | |
1548 | \f | |
1549 | DEFUN ("substitute-in-file-name", Fsubstitute_in_file_name, | |
1550 | Ssubstitute_in_file_name, 1, 1, 0, | |
1551 | "Substitute environment variables referred to in FILENAME.\n\ | |
1552 | `$FOO' where FOO is an environment variable name means to substitute\n\ | |
1553 | the value of that variable. The variable name should be terminated\n\ | |
1554 | with a character not a letter, digit or underscore; otherwise, enclose\n\ | |
1555 | the entire variable name in braces.\n\ | |
1556 | If `/~' appears, all of FILENAME through that `/' is discarded.\n\n\ | |
1557 | On VMS, `$' substitution is not done; this function does little and only\n\ | |
1558 | duplicates what `expand-file-name' does.") | |
1559 | (string) | |
1560 | Lisp_Object string; | |
1561 | { | |
1562 | unsigned char *nm; | |
1563 | ||
1564 | register unsigned char *s, *p, *o, *x, *endp; | |
1565 | unsigned char *target; | |
1566 | int total = 0; | |
1567 | int substituted = 0; | |
1568 | unsigned char *xnm; | |
8ce069f5 | 1569 | Lisp_Object handler; |
570d7624 JB |
1570 | |
1571 | CHECK_STRING (string, 0); | |
1572 | ||
8ce069f5 RS |
1573 | /* If the file name has special constructs in it, |
1574 | call the corresponding file handler. */ | |
1575 | handler = Ffind_file_name_handler (string, Qsubstitute_in_file_name); | |
1576 | if (!NILP (handler)) | |
1577 | return call2 (handler, Qsubstitute_in_file_name, string); | |
1578 | ||
570d7624 | 1579 | nm = XSTRING (string)->data; |
a5a1cc06 RS |
1580 | #ifdef MSDOS |
1581 | dostounix_filename (nm = strcpy (alloca (strlen (nm) + 1), nm)); | |
1582 | substituted = !strcmp (nm, XSTRING (string)->data); | |
1583 | #endif | |
570d7624 JB |
1584 | endp = nm + XSTRING (string)->size; |
1585 | ||
1586 | /* If /~ or // appears, discard everything through first slash. */ | |
1587 | ||
1588 | for (p = nm; p != endp; p++) | |
1589 | { | |
1590 | if ((p[0] == '~' || | |
1591 | #ifdef APOLLO | |
1592 | /* // at start of file name is meaningful in Apollo system */ | |
1593 | (p[0] == '/' && p - 1 != nm) | |
1594 | #else /* not APOLLO */ | |
5e570b75 RS |
1595 | #ifdef WINDOWSNT |
1596 | (IS_DIRECTORY_SEP (p[0]) && p - 1 != nm) | |
1597 | #else /* not WINDOWSNT */ | |
570d7624 | 1598 | p[0] == '/' |
5e570b75 | 1599 | #endif /* not WINDOWSNT */ |
570d7624 JB |
1600 | #endif /* not APOLLO */ |
1601 | ) | |
5e570b75 RS |
1602 | && p != nm |
1603 | && (0 | |
570d7624 | 1604 | #ifdef VMS |
5e570b75 | 1605 | || p[-1] == ':' || p[-1] == ']' || p[-1] == '>' |
570d7624 | 1606 | #endif /* VMS */ |
5e570b75 | 1607 | || IS_DIRECTORY_SEP (p[-1]))) |
570d7624 JB |
1608 | { |
1609 | nm = p; | |
1610 | substituted = 1; | |
1611 | } | |
5e570b75 | 1612 | #ifdef DOS_NT |
4c3c22f3 RS |
1613 | if (p[0] && p[1] == ':') |
1614 | { | |
1615 | nm = p; | |
1616 | substituted = 1; | |
1617 | } | |
5e570b75 | 1618 | #endif /* DOS_NT */ |
570d7624 JB |
1619 | } |
1620 | ||
1621 | #ifdef VMS | |
1622 | return build_string (nm); | |
1623 | #else | |
1624 | ||
1625 | /* See if any variables are substituted into the string | |
1626 | and find the total length of their values in `total' */ | |
1627 | ||
1628 | for (p = nm; p != endp;) | |
1629 | if (*p != '$') | |
1630 | p++; | |
1631 | else | |
1632 | { | |
1633 | p++; | |
1634 | if (p == endp) | |
1635 | goto badsubst; | |
1636 | else if (*p == '$') | |
1637 | { | |
1638 | /* "$$" means a single "$" */ | |
1639 | p++; | |
1640 | total -= 1; | |
1641 | substituted = 1; | |
1642 | continue; | |
1643 | } | |
1644 | else if (*p == '{') | |
1645 | { | |
1646 | o = ++p; | |
1647 | while (p != endp && *p != '}') p++; | |
1648 | if (*p != '}') goto missingclose; | |
1649 | s = p; | |
1650 | } | |
1651 | else | |
1652 | { | |
1653 | o = p; | |
1654 | while (p != endp && (isalnum (*p) || *p == '_')) p++; | |
1655 | s = p; | |
1656 | } | |
1657 | ||
1658 | /* Copy out the variable name */ | |
1659 | target = (unsigned char *) alloca (s - o + 1); | |
1660 | strncpy (target, o, s - o); | |
1661 | target[s - o] = 0; | |
5e570b75 | 1662 | #ifdef DOS_NT |
4c3c22f3 | 1663 | strupr (target); /* $home == $HOME etc. */ |
5e570b75 | 1664 | #endif /* DOS_NT */ |
570d7624 JB |
1665 | |
1666 | /* Get variable value */ | |
1667 | o = (unsigned char *) egetenv (target); | |
570d7624 JB |
1668 | if (!o) goto badvar; |
1669 | total += strlen (o); | |
1670 | substituted = 1; | |
1671 | } | |
1672 | ||
1673 | if (!substituted) | |
1674 | return string; | |
1675 | ||
1676 | /* If substitution required, recopy the string and do it */ | |
1677 | /* Make space in stack frame for the new copy */ | |
1678 | xnm = (unsigned char *) alloca (XSTRING (string)->size + total + 1); | |
1679 | x = xnm; | |
1680 | ||
1681 | /* Copy the rest of the name through, replacing $ constructs with values */ | |
1682 | for (p = nm; *p;) | |
1683 | if (*p != '$') | |
1684 | *x++ = *p++; | |
1685 | else | |
1686 | { | |
1687 | p++; | |
1688 | if (p == endp) | |
1689 | goto badsubst; | |
1690 | else if (*p == '$') | |
1691 | { | |
1692 | *x++ = *p++; | |
1693 | continue; | |
1694 | } | |
1695 | else if (*p == '{') | |
1696 | { | |
1697 | o = ++p; | |
1698 | while (p != endp && *p != '}') p++; | |
1699 | if (*p != '}') goto missingclose; | |
1700 | s = p++; | |
1701 | } | |
1702 | else | |
1703 | { | |
1704 | o = p; | |
1705 | while (p != endp && (isalnum (*p) || *p == '_')) p++; | |
1706 | s = p; | |
1707 | } | |
1708 | ||
1709 | /* Copy out the variable name */ | |
1710 | target = (unsigned char *) alloca (s - o + 1); | |
1711 | strncpy (target, o, s - o); | |
1712 | target[s - o] = 0; | |
5e570b75 | 1713 | #ifdef DOS_NT |
4c3c22f3 | 1714 | strupr (target); /* $home == $HOME etc. */ |
5e570b75 | 1715 | #endif /* DOS_NT */ |
570d7624 JB |
1716 | |
1717 | /* Get variable value */ | |
1718 | o = (unsigned char *) egetenv (target); | |
570d7624 JB |
1719 | if (!o) |
1720 | goto badvar; | |
1721 | ||
1722 | strcpy (x, o); | |
1723 | x += strlen (o); | |
1724 | } | |
1725 | ||
1726 | *x = 0; | |
1727 | ||
1728 | /* If /~ or // appears, discard everything through first slash. */ | |
1729 | ||
1730 | for (p = xnm; p != x; p++) | |
5e570b75 | 1731 | if ((p[0] == '~' |
570d7624 JB |
1732 | #ifdef APOLLO |
1733 | /* // at start of file name is meaningful in Apollo system */ | |
5e570b75 | 1734 | || (p[0] == '/' && p - 1 != xnm) |
570d7624 | 1735 | #else /* not APOLLO */ |
5e570b75 RS |
1736 | #ifdef WINDOWSNT |
1737 | || (IS_DIRECTORY_SEP (p[0]) && p - 1 != xnm) | |
1738 | #else /* not WINDOWSNT */ | |
1739 | || p[0] == '/' | |
1740 | #endif /* not WINDOWSNT */ | |
55928174 | 1741 | #endif /* not APOLLO */ |
570d7624 | 1742 | ) |
5e570b75 | 1743 | && p != nm && IS_DIRECTORY_SEP (p[-1])) |
570d7624 | 1744 | xnm = p; |
5e570b75 | 1745 | #ifdef DOS_NT |
4c3c22f3 RS |
1746 | else if (p[0] && p[1] == ':') |
1747 | xnm = p; | |
1748 | #endif | |
570d7624 JB |
1749 | |
1750 | return make_string (xnm, x - xnm); | |
1751 | ||
1752 | badsubst: | |
1753 | error ("Bad format environment-variable substitution"); | |
1754 | missingclose: | |
1755 | error ("Missing \"}\" in environment-variable substitution"); | |
1756 | badvar: | |
1757 | error ("Substituting nonexistent environment variable \"%s\"", target); | |
1758 | ||
1759 | /* NOTREACHED */ | |
1760 | #endif /* not VMS */ | |
1761 | } | |
1762 | \f | |
067ffa38 | 1763 | /* A slightly faster and more convenient way to get |
298b760e | 1764 | (directory-file-name (expand-file-name FOO)). */ |
067ffa38 | 1765 | |
570d7624 JB |
1766 | Lisp_Object |
1767 | expand_and_dir_to_file (filename, defdir) | |
1768 | Lisp_Object filename, defdir; | |
1769 | { | |
1770 | register Lisp_Object abspath; | |
1771 | ||
1772 | abspath = Fexpand_file_name (filename, defdir); | |
1773 | #ifdef VMS | |
1774 | { | |
1775 | register int c = XSTRING (abspath)->data[XSTRING (abspath)->size - 1]; | |
1776 | if (c == ':' || c == ']' || c == '>') | |
1777 | abspath = Fdirectory_file_name (abspath); | |
1778 | } | |
1779 | #else | |
1780 | /* Remove final slash, if any (unless path is root). | |
1781 | stat behaves differently depending! */ | |
1782 | if (XSTRING (abspath)->size > 1 | |
5e570b75 RS |
1783 | && IS_DIRECTORY_SEP (XSTRING (abspath)->data[XSTRING (abspath)->size - 1]) |
1784 | && !IS_DEVICE_SEP (XSTRING (abspath)->data[XSTRING (abspath)->size-2])) | |
ddc61f46 RS |
1785 | /* We cannot take shortcuts; they might be wrong for magic file names. */ |
1786 | abspath = Fdirectory_file_name (abspath); | |
570d7624 JB |
1787 | #endif |
1788 | return abspath; | |
1789 | } | |
1790 | \f | |
3ed15d97 RS |
1791 | /* Signal an error if the file ABSNAME already exists. |
1792 | If INTERACTIVE is nonzero, ask the user whether to proceed, | |
1793 | and bypass the error if the user says to go ahead. | |
1794 | QUERYSTRING is a name for the action that is being considered | |
1795 | to alter the file. | |
1796 | *STATPTR is used to store the stat information if the file exists. | |
1797 | If the file does not exist, STATPTR->st_mode is set to 0. */ | |
1798 | ||
c4df73f9 | 1799 | void |
3ed15d97 | 1800 | barf_or_query_if_file_exists (absname, querystring, interactive, statptr) |
570d7624 JB |
1801 | Lisp_Object absname; |
1802 | unsigned char *querystring; | |
1803 | int interactive; | |
3ed15d97 | 1804 | struct stat *statptr; |
570d7624 JB |
1805 | { |
1806 | register Lisp_Object tem; | |
4018b5ef | 1807 | struct stat statbuf; |
570d7624 JB |
1808 | struct gcpro gcpro1; |
1809 | ||
4018b5ef RS |
1810 | /* stat is a good way to tell whether the file exists, |
1811 | regardless of what access permissions it has. */ | |
1812 | if (stat (XSTRING (absname)->data, &statbuf) >= 0) | |
570d7624 JB |
1813 | { |
1814 | if (! interactive) | |
1815 | Fsignal (Qfile_already_exists, | |
1816 | Fcons (build_string ("File already exists"), | |
1817 | Fcons (absname, Qnil))); | |
1818 | GCPRO1 (absname); | |
1819 | tem = do_yes_or_no_p (format1 ("File %s already exists; %s anyway? ", | |
1820 | XSTRING (absname)->data, querystring)); | |
1821 | UNGCPRO; | |
265a9e55 | 1822 | if (NILP (tem)) |
570d7624 JB |
1823 | Fsignal (Qfile_already_exists, |
1824 | Fcons (build_string ("File already exists"), | |
1825 | Fcons (absname, Qnil))); | |
3ed15d97 RS |
1826 | if (statptr) |
1827 | *statptr = statbuf; | |
1828 | } | |
1829 | else | |
1830 | { | |
1831 | if (statptr) | |
1832 | statptr->st_mode = 0; | |
570d7624 JB |
1833 | } |
1834 | return; | |
1835 | } | |
1836 | ||
1837 | DEFUN ("copy-file", Fcopy_file, Scopy_file, 2, 4, | |
349a7710 | 1838 | "fCopy file: \nFCopy %s to file: \np\nP", |
570d7624 JB |
1839 | "Copy FILE to NEWNAME. Both args must be strings.\n\ |
1840 | Signals a `file-already-exists' error if file NEWNAME already exists,\n\ | |
1841 | unless a third argument OK-IF-ALREADY-EXISTS is supplied and non-nil.\n\ | |
1842 | A number as third arg means request confirmation if NEWNAME already exists.\n\ | |
1843 | This is what happens in interactive use with M-x.\n\ | |
349a7710 JB |
1844 | Fourth arg KEEP-TIME non-nil means give the new file the same\n\ |
1845 | last-modified time as the old one. (This works on only some systems.)\n\ | |
1846 | A prefix arg makes KEEP-TIME non-nil.") | |
570d7624 JB |
1847 | (filename, newname, ok_if_already_exists, keep_date) |
1848 | Lisp_Object filename, newname, ok_if_already_exists, keep_date; | |
1849 | { | |
1850 | int ifd, ofd, n; | |
1851 | char buf[16 * 1024]; | |
3ed15d97 | 1852 | struct stat st, out_st; |
32f4334d | 1853 | Lisp_Object handler; |
570d7624 | 1854 | struct gcpro gcpro1, gcpro2; |
b5148e85 | 1855 | int count = specpdl_ptr - specpdl; |
f73b0ada | 1856 | int input_file_statable_p; |
570d7624 JB |
1857 | |
1858 | GCPRO2 (filename, newname); | |
1859 | CHECK_STRING (filename, 0); | |
1860 | CHECK_STRING (newname, 1); | |
1861 | filename = Fexpand_file_name (filename, Qnil); | |
1862 | newname = Fexpand_file_name (newname, Qnil); | |
32f4334d | 1863 | |
0bf2eed2 | 1864 | /* If the input file name has special constructs in it, |
32f4334d | 1865 | call the corresponding file handler. */ |
49307295 | 1866 | handler = Ffind_file_name_handler (filename, Qcopy_file); |
0bf2eed2 | 1867 | /* Likewise for output file name. */ |
51cf6d37 | 1868 | if (NILP (handler)) |
49307295 | 1869 | handler = Ffind_file_name_handler (newname, Qcopy_file); |
32f4334d | 1870 | if (!NILP (handler)) |
36712b0a KH |
1871 | RETURN_UNGCPRO (call5 (handler, Qcopy_file, filename, newname, |
1872 | ok_if_already_exists, keep_date)); | |
32f4334d | 1873 | |
265a9e55 | 1874 | if (NILP (ok_if_already_exists) |
93c30b5f | 1875 | || INTEGERP (ok_if_already_exists)) |
570d7624 | 1876 | barf_or_query_if_file_exists (newname, "copy to it", |
3ed15d97 RS |
1877 | INTEGERP (ok_if_already_exists), &out_st); |
1878 | else if (stat (XSTRING (newname)->data, &out_st) < 0) | |
1879 | out_st.st_mode = 0; | |
570d7624 | 1880 | |
4018b5ef | 1881 | ifd = open (XSTRING (filename)->data, O_RDONLY); |
570d7624 JB |
1882 | if (ifd < 0) |
1883 | report_file_error ("Opening input file", Fcons (filename, Qnil)); | |
1884 | ||
b5148e85 RS |
1885 | record_unwind_protect (close_file_unwind, make_number (ifd)); |
1886 | ||
f73b0ada BF |
1887 | /* We can only copy regular files and symbolic links. Other files are not |
1888 | copyable by us. */ | |
1889 | input_file_statable_p = (fstat (ifd, &st) >= 0); | |
1890 | ||
3ed15d97 RS |
1891 | #ifndef DOS_NT |
1892 | if (out_st.st_mode != 0 | |
1893 | && st.st_dev == out_st.st_dev && st.st_ino == out_st.st_ino) | |
1894 | { | |
1895 | errno = 0; | |
1896 | report_file_error ("Input and output files are the same", | |
1897 | Fcons (filename, Fcons (newname, Qnil))); | |
1898 | } | |
1899 | #endif | |
1900 | ||
f73b0ada BF |
1901 | #if defined (S_ISREG) && defined (S_ISLNK) |
1902 | if (input_file_statable_p) | |
1903 | { | |
1904 | if (!(S_ISREG (st.st_mode)) && !(S_ISLNK (st.st_mode))) | |
1905 | { | |
1906 | #if defined (EISDIR) | |
1907 | /* Get a better looking error message. */ | |
1908 | errno = EISDIR; | |
1909 | #endif /* EISDIR */ | |
3ed15d97 | 1910 | report_file_error ("Non-regular file", Fcons (filename, Qnil)); |
f73b0ada BF |
1911 | } |
1912 | } | |
1913 | #endif /* S_ISREG && S_ISLNK */ | |
1914 | ||
570d7624 JB |
1915 | #ifdef VMS |
1916 | /* Create the copy file with the same record format as the input file */ | |
1917 | ofd = sys_creat (XSTRING (newname)->data, 0666, ifd); | |
1918 | #else | |
4c3c22f3 RS |
1919 | #ifdef MSDOS |
1920 | /* System's default file type was set to binary by _fmode in emacs.c. */ | |
1921 | ofd = creat (XSTRING (newname)->data, S_IREAD | S_IWRITE); | |
1922 | #else /* not MSDOS */ | |
570d7624 | 1923 | ofd = creat (XSTRING (newname)->data, 0666); |
4c3c22f3 | 1924 | #endif /* not MSDOS */ |
570d7624 JB |
1925 | #endif /* VMS */ |
1926 | if (ofd < 0) | |
3ed15d97 | 1927 | report_file_error ("Opening output file", Fcons (newname, Qnil)); |
b5148e85 RS |
1928 | |
1929 | record_unwind_protect (close_file_unwind, make_number (ofd)); | |
570d7624 | 1930 | |
b5148e85 RS |
1931 | immediate_quit = 1; |
1932 | QUIT; | |
570d7624 JB |
1933 | while ((n = read (ifd, buf, sizeof buf)) > 0) |
1934 | if (write (ofd, buf, n) != n) | |
3ed15d97 | 1935 | report_file_error ("I/O error", Fcons (newname, Qnil)); |
b5148e85 | 1936 | immediate_quit = 0; |
570d7624 | 1937 | |
5acac34e RS |
1938 | /* Closing the output clobbers the file times on some systems. */ |
1939 | if (close (ofd) < 0) | |
1940 | report_file_error ("I/O error", Fcons (newname, Qnil)); | |
1941 | ||
f73b0ada | 1942 | if (input_file_statable_p) |
570d7624 | 1943 | { |
265a9e55 | 1944 | if (!NILP (keep_date)) |
570d7624 | 1945 | { |
de5bf5d3 JB |
1946 | EMACS_TIME atime, mtime; |
1947 | EMACS_SET_SECS_USECS (atime, st.st_atime, 0); | |
1948 | EMACS_SET_SECS_USECS (mtime, st.st_mtime, 0); | |
d6303611 KH |
1949 | if (set_file_times (XSTRING (newname)->data, atime, mtime)) |
1950 | report_file_error ("I/O error", Fcons (newname, Qnil)); | |
570d7624 | 1951 | } |
2dc3be7e RS |
1952 | #ifndef MSDOS |
1953 | chmod (XSTRING (newname)->data, st.st_mode & 07777); | |
1954 | #else /* MSDOS */ | |
1955 | #if defined (__DJGPP__) && __DJGPP__ > 1 | |
1956 | /* In DJGPP v2.0 and later, fstat usually returns true file mode bits, | |
1957 | and if it can't, it tells so. Otherwise, under MSDOS we usually | |
1958 | get only the READ bit, which will make the copied file read-only, | |
1959 | so it's better not to chmod at all. */ | |
1960 | if ((_djstat_flags & _STFAIL_WRITEBIT) == 0) | |
de5bf5d3 | 1961 | chmod (XSTRING (newname)->data, st.st_mode & 07777); |
2dc3be7e RS |
1962 | #endif /* DJGPP version 2 or newer */ |
1963 | #endif /* MSDOS */ | |
570d7624 JB |
1964 | } |
1965 | ||
5acac34e RS |
1966 | close (ifd); |
1967 | ||
b5148e85 RS |
1968 | /* Discard the unwind protects. */ |
1969 | specpdl_ptr = specpdl + count; | |
1970 | ||
570d7624 JB |
1971 | UNGCPRO; |
1972 | return Qnil; | |
1973 | } | |
385b6cc7 | 1974 | \f |
9bbe01fb | 1975 | DEFUN ("make-directory-internal", Fmake_directory_internal, |
353cfc19 | 1976 | Smake_directory_internal, 1, 1, 0, |
570d7624 JB |
1977 | "Create a directory. One argument, a file name string.") |
1978 | (dirname) | |
1979 | Lisp_Object dirname; | |
1980 | { | |
1981 | unsigned char *dir; | |
32f4334d | 1982 | Lisp_Object handler; |
570d7624 JB |
1983 | |
1984 | CHECK_STRING (dirname, 0); | |
1985 | dirname = Fexpand_file_name (dirname, Qnil); | |
32f4334d | 1986 | |
a6e6e718 | 1987 | handler = Ffind_file_name_handler (dirname, Qmake_directory_internal); |
32f4334d | 1988 | if (!NILP (handler)) |
e508ad53 | 1989 | return call2 (handler, Qmake_directory_internal, dirname); |
9bbe01fb | 1990 | |
570d7624 JB |
1991 | dir = XSTRING (dirname)->data; |
1992 | ||
5e570b75 RS |
1993 | #ifdef WINDOWSNT |
1994 | if (mkdir (dir) != 0) | |
1995 | #else | |
570d7624 | 1996 | if (mkdir (dir, 0777) != 0) |
5e570b75 | 1997 | #endif |
570d7624 JB |
1998 | report_file_error ("Creating directory", Flist (1, &dirname)); |
1999 | ||
32f4334d | 2000 | return Qnil; |
570d7624 JB |
2001 | } |
2002 | ||
aa734e17 | 2003 | DEFUN ("delete-directory", Fdelete_directory, Sdelete_directory, 1, 1, "FDelete directory: ", |
1691b32b | 2004 | "Delete a directory. One argument, a file name or directory name string.") |
570d7624 JB |
2005 | (dirname) |
2006 | Lisp_Object dirname; | |
2007 | { | |
2008 | unsigned char *dir; | |
32f4334d | 2009 | Lisp_Object handler; |
570d7624 JB |
2010 | |
2011 | CHECK_STRING (dirname, 0); | |
1691b32b | 2012 | dirname = Fdirectory_file_name (Fexpand_file_name (dirname, Qnil)); |
570d7624 JB |
2013 | dir = XSTRING (dirname)->data; |
2014 | ||
49307295 | 2015 | handler = Ffind_file_name_handler (dirname, Qdelete_directory); |
32f4334d RS |
2016 | if (!NILP (handler)) |
2017 | return call2 (handler, Qdelete_directory, dirname); | |
2018 | ||
570d7624 JB |
2019 | if (rmdir (dir) != 0) |
2020 | report_file_error ("Removing directory", Flist (1, &dirname)); | |
2021 | ||
2022 | return Qnil; | |
2023 | } | |
2024 | ||
2025 | DEFUN ("delete-file", Fdelete_file, Sdelete_file, 1, 1, "fDelete file: ", | |
2026 | "Delete specified file. One argument, a file name string.\n\ | |
2027 | If file has multiple names, it continues to exist with the other names.") | |
2028 | (filename) | |
2029 | Lisp_Object filename; | |
2030 | { | |
32f4334d | 2031 | Lisp_Object handler; |
570d7624 JB |
2032 | CHECK_STRING (filename, 0); |
2033 | filename = Fexpand_file_name (filename, Qnil); | |
32f4334d | 2034 | |
49307295 | 2035 | handler = Ffind_file_name_handler (filename, Qdelete_file); |
32f4334d | 2036 | if (!NILP (handler)) |
8a9b0da9 | 2037 | return call2 (handler, Qdelete_file, filename); |
32f4334d | 2038 | |
570d7624 JB |
2039 | if (0 > unlink (XSTRING (filename)->data)) |
2040 | report_file_error ("Removing old name", Flist (1, &filename)); | |
8a9b0da9 | 2041 | return Qnil; |
570d7624 JB |
2042 | } |
2043 | ||
385b6cc7 RS |
2044 | static Lisp_Object |
2045 | internal_delete_file_1 (ignore) | |
2046 | Lisp_Object ignore; | |
2047 | { | |
2048 | return Qt; | |
2049 | } | |
2050 | ||
2051 | /* Delete file FILENAME, returning 1 if successful and 0 if failed. */ | |
2052 | ||
2053 | int | |
2054 | internal_delete_file (filename) | |
2055 | Lisp_Object filename; | |
2056 | { | |
2057 | return NILP (internal_condition_case_1 (Fdelete_file, filename, | |
2058 | Qt, internal_delete_file_1)); | |
2059 | } | |
2060 | \f | |
570d7624 JB |
2061 | DEFUN ("rename-file", Frename_file, Srename_file, 2, 3, |
2062 | "fRename file: \nFRename %s to file: \np", | |
2063 | "Rename FILE as NEWNAME. Both args strings.\n\ | |
2064 | If file has names other than FILE, it continues to have those names.\n\ | |
2065 | Signals a `file-already-exists' error if a file NEWNAME already exists\n\ | |
2066 | unless optional third argument OK-IF-ALREADY-EXISTS is non-nil.\n\ | |
2067 | A number as third arg means request confirmation if NEWNAME already exists.\n\ | |
2068 | This is what happens in interactive use with M-x.") | |
2069 | (filename, newname, ok_if_already_exists) | |
2070 | Lisp_Object filename, newname, ok_if_already_exists; | |
2071 | { | |
2072 | #ifdef NO_ARG_ARRAY | |
2073 | Lisp_Object args[2]; | |
2074 | #endif | |
32f4334d | 2075 | Lisp_Object handler; |
570d7624 JB |
2076 | struct gcpro gcpro1, gcpro2; |
2077 | ||
2078 | GCPRO2 (filename, newname); | |
2079 | CHECK_STRING (filename, 0); | |
2080 | CHECK_STRING (newname, 1); | |
2081 | filename = Fexpand_file_name (filename, Qnil); | |
2082 | newname = Fexpand_file_name (newname, Qnil); | |
32f4334d RS |
2083 | |
2084 | /* If the file name has special constructs in it, | |
2085 | call the corresponding file handler. */ | |
49307295 | 2086 | handler = Ffind_file_name_handler (filename, Qrename_file); |
51cf6d37 | 2087 | if (NILP (handler)) |
49307295 | 2088 | handler = Ffind_file_name_handler (newname, Qrename_file); |
32f4334d | 2089 | if (!NILP (handler)) |
36712b0a KH |
2090 | RETURN_UNGCPRO (call4 (handler, Qrename_file, |
2091 | filename, newname, ok_if_already_exists)); | |
32f4334d | 2092 | |
265a9e55 | 2093 | if (NILP (ok_if_already_exists) |
93c30b5f | 2094 | || INTEGERP (ok_if_already_exists)) |
570d7624 | 2095 | barf_or_query_if_file_exists (newname, "rename to it", |
3ed15d97 | 2096 | INTEGERP (ok_if_already_exists), 0); |
570d7624 JB |
2097 | #ifndef BSD4_1 |
2098 | if (0 > rename (XSTRING (filename)->data, XSTRING (newname)->data)) | |
2099 | #else | |
5e570b75 RS |
2100 | #ifdef WINDOWSNT |
2101 | if (!MoveFile (XSTRING (filename)->data, XSTRING (newname)->data)) | |
2102 | #else /* not WINDOWSNT */ | |
570d7624 JB |
2103 | if (0 > link (XSTRING (filename)->data, XSTRING (newname)->data) |
2104 | || 0 > unlink (XSTRING (filename)->data)) | |
5e570b75 | 2105 | #endif /* not WINDOWSNT */ |
570d7624 JB |
2106 | #endif |
2107 | { | |
5e570b75 RS |
2108 | #ifdef WINDOWSNT |
2109 | /* Why two? And why doesn't MS document what MoveFile will return? */ | |
2110 | if (GetLastError () == ERROR_FILE_EXISTS | |
2111 | || GetLastError () == ERROR_ALREADY_EXISTS) | |
2112 | #else /* not WINDOWSNT */ | |
570d7624 | 2113 | if (errno == EXDEV) |
5e570b75 | 2114 | #endif /* not WINDOWSNT */ |
570d7624 | 2115 | { |
d093c3ac RM |
2116 | Fcopy_file (filename, newname, |
2117 | /* We have already prompted if it was an integer, | |
2118 | so don't have copy-file prompt again. */ | |
2119 | NILP (ok_if_already_exists) ? Qnil : Qt, Qt); | |
570d7624 JB |
2120 | Fdelete_file (filename); |
2121 | } | |
2122 | else | |
2123 | #ifdef NO_ARG_ARRAY | |
2124 | { | |
2125 | args[0] = filename; | |
2126 | args[1] = newname; | |
2127 | report_file_error ("Renaming", Flist (2, args)); | |
2128 | } | |
2129 | #else | |
2130 | report_file_error ("Renaming", Flist (2, &filename)); | |
2131 | #endif | |
2132 | } | |
2133 | UNGCPRO; | |
2134 | return Qnil; | |
2135 | } | |
2136 | ||
2137 | DEFUN ("add-name-to-file", Fadd_name_to_file, Sadd_name_to_file, 2, 3, | |
2138 | "fAdd name to file: \nFName to add to %s: \np", | |
2139 | "Give FILE additional name NEWNAME. Both args strings.\n\ | |
2140 | Signals a `file-already-exists' error if a file NEWNAME already exists\n\ | |
2141 | unless optional third argument OK-IF-ALREADY-EXISTS is non-nil.\n\ | |
2142 | A number as third arg means request confirmation if NEWNAME already exists.\n\ | |
2143 | This is what happens in interactive use with M-x.") | |
2144 | (filename, newname, ok_if_already_exists) | |
2145 | Lisp_Object filename, newname, ok_if_already_exists; | |
2146 | { | |
2147 | #ifdef NO_ARG_ARRAY | |
2148 | Lisp_Object args[2]; | |
2149 | #endif | |
32f4334d | 2150 | Lisp_Object handler; |
570d7624 JB |
2151 | struct gcpro gcpro1, gcpro2; |
2152 | ||
2153 | GCPRO2 (filename, newname); | |
2154 | CHECK_STRING (filename, 0); | |
2155 | CHECK_STRING (newname, 1); | |
2156 | filename = Fexpand_file_name (filename, Qnil); | |
2157 | newname = Fexpand_file_name (newname, Qnil); | |
32f4334d RS |
2158 | |
2159 | /* If the file name has special constructs in it, | |
2160 | call the corresponding file handler. */ | |
49307295 | 2161 | handler = Ffind_file_name_handler (filename, Qadd_name_to_file); |
32f4334d | 2162 | if (!NILP (handler)) |
36712b0a KH |
2163 | RETURN_UNGCPRO (call4 (handler, Qadd_name_to_file, filename, |
2164 | newname, ok_if_already_exists)); | |
32f4334d | 2165 | |
adc6741c RS |
2166 | /* If the new name has special constructs in it, |
2167 | call the corresponding file handler. */ | |
2168 | handler = Ffind_file_name_handler (newname, Qadd_name_to_file); | |
2169 | if (!NILP (handler)) | |
2170 | RETURN_UNGCPRO (call4 (handler, Qadd_name_to_file, filename, | |
2171 | newname, ok_if_already_exists)); | |
2172 | ||
265a9e55 | 2173 | if (NILP (ok_if_already_exists) |
93c30b5f | 2174 | || INTEGERP (ok_if_already_exists)) |
570d7624 | 2175 | barf_or_query_if_file_exists (newname, "make it a new name", |
3ed15d97 | 2176 | INTEGERP (ok_if_already_exists), 0); |
5e570b75 RS |
2177 | #ifdef WINDOWSNT |
2178 | /* Windows does not support this operation. */ | |
2179 | report_file_error ("Adding new name", Flist (2, &filename)); | |
2180 | #else /* not WINDOWSNT */ | |
2181 | ||
570d7624 JB |
2182 | unlink (XSTRING (newname)->data); |
2183 | if (0 > link (XSTRING (filename)->data, XSTRING (newname)->data)) | |
2184 | { | |
2185 | #ifdef NO_ARG_ARRAY | |
2186 | args[0] = filename; | |
2187 | args[1] = newname; | |
2188 | report_file_error ("Adding new name", Flist (2, args)); | |
2189 | #else | |
2190 | report_file_error ("Adding new name", Flist (2, &filename)); | |
2191 | #endif | |
2192 | } | |
5e570b75 | 2193 | #endif /* not WINDOWSNT */ |
570d7624 JB |
2194 | |
2195 | UNGCPRO; | |
2196 | return Qnil; | |
2197 | } | |
2198 | ||
2199 | #ifdef S_IFLNK | |
2200 | DEFUN ("make-symbolic-link", Fmake_symbolic_link, Smake_symbolic_link, 2, 3, | |
2201 | "FMake symbolic link to file: \nFMake symbolic link to file %s: \np", | |
2202 | "Make a symbolic link to FILENAME, named LINKNAME. Both args strings.\n\ | |
11183104 | 2203 | Signals a `file-already-exists' error if a file LINKNAME already exists\n\ |
570d7624 | 2204 | unless optional third argument OK-IF-ALREADY-EXISTS is non-nil.\n\ |
11183104 | 2205 | A number as third arg means request confirmation if LINKNAME already exists.\n\ |
570d7624 | 2206 | This happens for interactive use with M-x.") |
e5d77022 JB |
2207 | (filename, linkname, ok_if_already_exists) |
2208 | Lisp_Object filename, linkname, ok_if_already_exists; | |
570d7624 JB |
2209 | { |
2210 | #ifdef NO_ARG_ARRAY | |
2211 | Lisp_Object args[2]; | |
2212 | #endif | |
32f4334d | 2213 | Lisp_Object handler; |
570d7624 JB |
2214 | struct gcpro gcpro1, gcpro2; |
2215 | ||
e5d77022 | 2216 | GCPRO2 (filename, linkname); |
570d7624 | 2217 | CHECK_STRING (filename, 0); |
e5d77022 | 2218 | CHECK_STRING (linkname, 1); |
d9bc1c99 RS |
2219 | /* If the link target has a ~, we must expand it to get |
2220 | a truly valid file name. Otherwise, do not expand; | |
2221 | we want to permit links to relative file names. */ | |
2222 | if (XSTRING (filename)->data[0] == '~') | |
2223 | filename = Fexpand_file_name (filename, Qnil); | |
e5d77022 | 2224 | linkname = Fexpand_file_name (linkname, Qnil); |
32f4334d RS |
2225 | |
2226 | /* If the file name has special constructs in it, | |
2227 | call the corresponding file handler. */ | |
49307295 | 2228 | handler = Ffind_file_name_handler (filename, Qmake_symbolic_link); |
32f4334d | 2229 | if (!NILP (handler)) |
36712b0a KH |
2230 | RETURN_UNGCPRO (call4 (handler, Qmake_symbolic_link, filename, |
2231 | linkname, ok_if_already_exists)); | |
32f4334d | 2232 | |
adc6741c RS |
2233 | /* If the new link name has special constructs in it, |
2234 | call the corresponding file handler. */ | |
2235 | handler = Ffind_file_name_handler (linkname, Qmake_symbolic_link); | |
2236 | if (!NILP (handler)) | |
2237 | RETURN_UNGCPRO (call4 (handler, Qmake_symbolic_link, filename, | |
2238 | linkname, ok_if_already_exists)); | |
2239 | ||
265a9e55 | 2240 | if (NILP (ok_if_already_exists) |
93c30b5f | 2241 | || INTEGERP (ok_if_already_exists)) |
e5d77022 | 2242 | barf_or_query_if_file_exists (linkname, "make it a link", |
3ed15d97 | 2243 | INTEGERP (ok_if_already_exists), 0); |
e5d77022 | 2244 | if (0 > symlink (XSTRING (filename)->data, XSTRING (linkname)->data)) |
570d7624 JB |
2245 | { |
2246 | /* If we didn't complain already, silently delete existing file. */ | |
2247 | if (errno == EEXIST) | |
2248 | { | |
9083124b | 2249 | unlink (XSTRING (linkname)->data); |
e5d77022 | 2250 | if (0 <= symlink (XSTRING (filename)->data, XSTRING (linkname)->data)) |
1a04498e KH |
2251 | { |
2252 | UNGCPRO; | |
2253 | return Qnil; | |
2254 | } | |
570d7624 JB |
2255 | } |
2256 | ||
2257 | #ifdef NO_ARG_ARRAY | |
2258 | args[0] = filename; | |
e5d77022 | 2259 | args[1] = linkname; |
570d7624 JB |
2260 | report_file_error ("Making symbolic link", Flist (2, args)); |
2261 | #else | |
2262 | report_file_error ("Making symbolic link", Flist (2, &filename)); | |
2263 | #endif | |
2264 | } | |
2265 | UNGCPRO; | |
2266 | return Qnil; | |
2267 | } | |
2268 | #endif /* S_IFLNK */ | |
2269 | ||
2270 | #ifdef VMS | |
2271 | ||
2272 | DEFUN ("define-logical-name", Fdefine_logical_name, Sdefine_logical_name, | |
2273 | 2, 2, "sDefine logical name: \nsDefine logical name %s as: ", | |
2274 | "Define the job-wide logical name NAME to have the value STRING.\n\ | |
2275 | If STRING is nil or a null string, the logical name NAME is deleted.") | |
2276 | (varname, string) | |
2277 | Lisp_Object varname; | |
2278 | Lisp_Object string; | |
2279 | { | |
2280 | CHECK_STRING (varname, 0); | |
265a9e55 | 2281 | if (NILP (string)) |
570d7624 JB |
2282 | delete_logical_name (XSTRING (varname)->data); |
2283 | else | |
2284 | { | |
2285 | CHECK_STRING (string, 1); | |
2286 | ||
2287 | if (XSTRING (string)->size == 0) | |
5e570b75 | 2288 | delete_logical_name (XSTRING (varname)->data); |
570d7624 | 2289 | else |
5e570b75 | 2290 | define_logical_name (XSTRING (varname)->data, XSTRING (string)->data); |
570d7624 JB |
2291 | } |
2292 | ||
2293 | return string; | |
2294 | } | |
2295 | #endif /* VMS */ | |
2296 | ||
2297 | #ifdef HPUX_NET | |
2298 | ||
2299 | DEFUN ("sysnetunam", Fsysnetunam, Ssysnetunam, 2, 2, 0, | |
2300 | "Open a network connection to PATH using LOGIN as the login string.") | |
2301 | (path, login) | |
2302 | Lisp_Object path, login; | |
2303 | { | |
2304 | int netresult; | |
2305 | ||
2306 | CHECK_STRING (path, 0); | |
2307 | CHECK_STRING (login, 0); | |
2308 | ||
2309 | netresult = netunam (XSTRING (path)->data, XSTRING (login)->data); | |
2310 | ||
2311 | if (netresult == -1) | |
2312 | return Qnil; | |
2313 | else | |
2314 | return Qt; | |
2315 | } | |
2316 | #endif /* HPUX_NET */ | |
2317 | \f | |
2318 | DEFUN ("file-name-absolute-p", Ffile_name_absolute_p, Sfile_name_absolute_p, | |
2319 | 1, 1, 0, | |
2320 | "Return t if file FILENAME specifies an absolute path name.\n\ | |
2321 | On Unix, this is a name starting with a `/' or a `~'.") | |
2322 | (filename) | |
2323 | Lisp_Object filename; | |
2324 | { | |
2325 | unsigned char *ptr; | |
2326 | ||
2327 | CHECK_STRING (filename, 0); | |
2328 | ptr = XSTRING (filename)->data; | |
5e570b75 | 2329 | if (IS_DIRECTORY_SEP (*ptr) || *ptr == '~' |
570d7624 JB |
2330 | #ifdef VMS |
2331 | /* ??? This criterion is probably wrong for '<'. */ | |
2332 | || index (ptr, ':') || index (ptr, '<') | |
2333 | || (*ptr == '[' && (ptr[1] != '-' || (ptr[2] != '.' && ptr[2] != ']')) | |
2334 | && ptr[1] != '.') | |
2335 | #endif /* VMS */ | |
5e570b75 | 2336 | #ifdef DOS_NT |
a5a1cc06 | 2337 | || (*ptr != 0 && ptr[1] == ':' && (ptr[2] == '/' || ptr[2] == '\\')) |
4c3c22f3 | 2338 | #endif |
570d7624 JB |
2339 | ) |
2340 | return Qt; | |
2341 | else | |
2342 | return Qnil; | |
2343 | } | |
3beeedfe RS |
2344 | \f |
2345 | /* Return nonzero if file FILENAME exists and can be executed. */ | |
2346 | ||
2347 | static int | |
2348 | check_executable (filename) | |
2349 | char *filename; | |
2350 | { | |
3be3c08e RS |
2351 | #ifdef DOS_NT |
2352 | int len = strlen (filename); | |
2353 | char *suffix; | |
2354 | struct stat st; | |
2355 | if (stat (filename, &st) < 0) | |
2356 | return 0; | |
2357 | return (S_ISREG (st.st_mode) | |
2358 | && len >= 5 | |
2359 | && (stricmp ((suffix = filename + len-4), ".com") == 0 | |
2360 | || stricmp (suffix, ".exe") == 0 | |
2dc3be7e RS |
2361 | || stricmp (suffix, ".bat") == 0) |
2362 | || (st.st_mode & S_IFMT) == S_IFDIR); | |
3be3c08e | 2363 | #else /* not DOS_NT */ |
fcd2fe41 | 2364 | #ifdef HAVE_EACCESS |
b2728f4b | 2365 | return (eaccess (filename, 1) >= 0); |
3beeedfe RS |
2366 | #else |
2367 | /* Access isn't quite right because it uses the real uid | |
2368 | and we really want to test with the effective uid. | |
2369 | But Unix doesn't give us a right way to do it. */ | |
2370 | return (access (filename, 1) >= 0); | |
2371 | #endif | |
3be3c08e | 2372 | #endif /* not DOS_NT */ |
3beeedfe RS |
2373 | } |
2374 | ||
2375 | /* Return nonzero if file FILENAME exists and can be written. */ | |
2376 | ||
2377 | static int | |
2378 | check_writable (filename) | |
2379 | char *filename; | |
2380 | { | |
3be3c08e RS |
2381 | #ifdef MSDOS |
2382 | struct stat st; | |
2383 | if (stat (filename, &st) < 0) | |
2384 | return 0; | |
2385 | return (st.st_mode & S_IWRITE || (st.st_mode & S_IFMT) == S_IFDIR); | |
2386 | #else /* not MSDOS */ | |
fcd2fe41 | 2387 | #ifdef HAVE_EACCESS |
b2728f4b | 2388 | return (eaccess (filename, 2) >= 0); |
3beeedfe RS |
2389 | #else |
2390 | /* Access isn't quite right because it uses the real uid | |
2391 | and we really want to test with the effective uid. | |
2392 | But Unix doesn't give us a right way to do it. | |
2393 | Opening with O_WRONLY could work for an ordinary file, | |
2394 | but would lose for directories. */ | |
2395 | return (access (filename, 2) >= 0); | |
2396 | #endif | |
3be3c08e | 2397 | #endif /* not MSDOS */ |
3beeedfe | 2398 | } |
570d7624 JB |
2399 | |
2400 | DEFUN ("file-exists-p", Ffile_exists_p, Sfile_exists_p, 1, 1, 0, | |
2401 | "Return t if file FILENAME exists. (This does not mean you can read it.)\n\ | |
2402 | See also `file-readable-p' and `file-attributes'.") | |
2403 | (filename) | |
2404 | Lisp_Object filename; | |
2405 | { | |
2406 | Lisp_Object abspath; | |
32f4334d | 2407 | Lisp_Object handler; |
4018b5ef | 2408 | struct stat statbuf; |
570d7624 JB |
2409 | |
2410 | CHECK_STRING (filename, 0); | |
2411 | abspath = Fexpand_file_name (filename, Qnil); | |
32f4334d RS |
2412 | |
2413 | /* If the file name has special constructs in it, | |
2414 | call the corresponding file handler. */ | |
49307295 | 2415 | handler = Ffind_file_name_handler (abspath, Qfile_exists_p); |
32f4334d | 2416 | if (!NILP (handler)) |
09121adc | 2417 | return call2 (handler, Qfile_exists_p, abspath); |
32f4334d | 2418 | |
4018b5ef | 2419 | return (stat (XSTRING (abspath)->data, &statbuf) >= 0) ? Qt : Qnil; |
570d7624 JB |
2420 | } |
2421 | ||
2422 | DEFUN ("file-executable-p", Ffile_executable_p, Sfile_executable_p, 1, 1, 0, | |
2423 | "Return t if FILENAME can be executed by you.\n\ | |
8b235fde | 2424 | For a directory, this means you can access files in that directory.") |
570d7624 JB |
2425 | (filename) |
2426 | Lisp_Object filename; | |
2427 | ||
2428 | { | |
2429 | Lisp_Object abspath; | |
32f4334d | 2430 | Lisp_Object handler; |
570d7624 JB |
2431 | |
2432 | CHECK_STRING (filename, 0); | |
2433 | abspath = Fexpand_file_name (filename, Qnil); | |
32f4334d RS |
2434 | |
2435 | /* If the file name has special constructs in it, | |
2436 | call the corresponding file handler. */ | |
49307295 | 2437 | handler = Ffind_file_name_handler (abspath, Qfile_executable_p); |
32f4334d | 2438 | if (!NILP (handler)) |
09121adc | 2439 | return call2 (handler, Qfile_executable_p, abspath); |
32f4334d | 2440 | |
3beeedfe | 2441 | return (check_executable (XSTRING (abspath)->data) ? Qt : Qnil); |
570d7624 JB |
2442 | } |
2443 | ||
2444 | DEFUN ("file-readable-p", Ffile_readable_p, Sfile_readable_p, 1, 1, 0, | |
2445 | "Return t if file FILENAME exists and you can read it.\n\ | |
2446 | See also `file-exists-p' and `file-attributes'.") | |
2447 | (filename) | |
2448 | Lisp_Object filename; | |
2449 | { | |
2450 | Lisp_Object abspath; | |
32f4334d | 2451 | Lisp_Object handler; |
4018b5ef | 2452 | int desc; |
570d7624 JB |
2453 | |
2454 | CHECK_STRING (filename, 0); | |
2455 | abspath = Fexpand_file_name (filename, Qnil); | |
32f4334d RS |
2456 | |
2457 | /* If the file name has special constructs in it, | |
2458 | call the corresponding file handler. */ | |
49307295 | 2459 | handler = Ffind_file_name_handler (abspath, Qfile_readable_p); |
32f4334d | 2460 | if (!NILP (handler)) |
09121adc | 2461 | return call2 (handler, Qfile_readable_p, abspath); |
32f4334d | 2462 | |
a8a7d065 RS |
2463 | #ifdef MSDOS |
2464 | /* Under MS-DOS, open does not work't right, because it doesn't work for | |
2465 | directories (MS-DOS won't let you open a directory). */ | |
2466 | if (access (XSTRING (abspath)->data, 0) == 0) | |
2467 | return Qt; | |
2468 | return Qnil; | |
2469 | #else /* not MSDOS */ | |
4018b5ef RS |
2470 | desc = open (XSTRING (abspath)->data, O_RDONLY); |
2471 | if (desc < 0) | |
2472 | return Qnil; | |
2473 | close (desc); | |
2474 | return Qt; | |
a8a7d065 | 2475 | #endif /* not MSDOS */ |
570d7624 JB |
2476 | } |
2477 | ||
f793dc6c RS |
2478 | /* Having this before file-symlink-p mysteriously caused it to be forgotten |
2479 | on the RT/PC. */ | |
2480 | DEFUN ("file-writable-p", Ffile_writable_p, Sfile_writable_p, 1, 1, 0, | |
2481 | "Return t if file FILENAME can be written or created by you.") | |
2482 | (filename) | |
2483 | Lisp_Object filename; | |
2484 | { | |
2485 | Lisp_Object abspath, dir; | |
2486 | Lisp_Object handler; | |
2487 | struct stat statbuf; | |
2488 | ||
2489 | CHECK_STRING (filename, 0); | |
2490 | abspath = Fexpand_file_name (filename, Qnil); | |
2491 | ||
2492 | /* If the file name has special constructs in it, | |
2493 | call the corresponding file handler. */ | |
2494 | handler = Ffind_file_name_handler (abspath, Qfile_writable_p); | |
2495 | if (!NILP (handler)) | |
2496 | return call2 (handler, Qfile_writable_p, abspath); | |
2497 | ||
2498 | if (stat (XSTRING (abspath)->data, &statbuf) >= 0) | |
2499 | return (check_writable (XSTRING (abspath)->data) | |
2500 | ? Qt : Qnil); | |
2501 | dir = Ffile_name_directory (abspath); | |
2502 | #ifdef VMS | |
2503 | if (!NILP (dir)) | |
2504 | dir = Fdirectory_file_name (dir); | |
2505 | #endif /* VMS */ | |
2506 | #ifdef MSDOS | |
2507 | if (!NILP (dir)) | |
2508 | dir = Fdirectory_file_name (dir); | |
2509 | #endif /* MSDOS */ | |
2510 | return (check_writable (!NILP (dir) ? (char *) XSTRING (dir)->data : "") | |
2511 | ? Qt : Qnil); | |
2512 | } | |
2513 | \f | |
570d7624 | 2514 | DEFUN ("file-symlink-p", Ffile_symlink_p, Sfile_symlink_p, 1, 1, 0, |
89de89c7 RS |
2515 | "Return non-nil if file FILENAME is the name of a symbolic link.\n\ |
2516 | The value is the name of the file to which it is linked.\n\ | |
2517 | Otherwise returns nil.") | |
570d7624 JB |
2518 | (filename) |
2519 | Lisp_Object filename; | |
2520 | { | |
2521 | #ifdef S_IFLNK | |
2522 | char *buf; | |
2523 | int bufsize; | |
2524 | int valsize; | |
2525 | Lisp_Object val; | |
32f4334d | 2526 | Lisp_Object handler; |
570d7624 JB |
2527 | |
2528 | CHECK_STRING (filename, 0); | |
2529 | filename = Fexpand_file_name (filename, Qnil); | |
2530 | ||
32f4334d RS |
2531 | /* If the file name has special constructs in it, |
2532 | call the corresponding file handler. */ | |
49307295 | 2533 | handler = Ffind_file_name_handler (filename, Qfile_symlink_p); |
32f4334d RS |
2534 | if (!NILP (handler)) |
2535 | return call2 (handler, Qfile_symlink_p, filename); | |
2536 | ||
570d7624 JB |
2537 | bufsize = 100; |
2538 | while (1) | |
2539 | { | |
2540 | buf = (char *) xmalloc (bufsize); | |
2541 | bzero (buf, bufsize); | |
2542 | valsize = readlink (XSTRING (filename)->data, buf, bufsize); | |
2543 | if (valsize < bufsize) break; | |
2544 | /* Buffer was not long enough */ | |
9ac0d9e0 | 2545 | xfree (buf); |
570d7624 JB |
2546 | bufsize *= 2; |
2547 | } | |
2548 | if (valsize == -1) | |
2549 | { | |
9ac0d9e0 | 2550 | xfree (buf); |
570d7624 JB |
2551 | return Qnil; |
2552 | } | |
2553 | val = make_string (buf, valsize); | |
9ac0d9e0 | 2554 | xfree (buf); |
570d7624 JB |
2555 | return val; |
2556 | #else /* not S_IFLNK */ | |
2557 | return Qnil; | |
2558 | #endif /* not S_IFLNK */ | |
2559 | } | |
2560 | ||
570d7624 JB |
2561 | DEFUN ("file-directory-p", Ffile_directory_p, Sfile_directory_p, 1, 1, 0, |
2562 | "Return t if file FILENAME is the name of a directory as a file.\n\ | |
2563 | A directory name spec may be given instead; then the value is t\n\ | |
2564 | if the directory so specified exists and really is a directory.") | |
2565 | (filename) | |
2566 | Lisp_Object filename; | |
2567 | { | |
2568 | register Lisp_Object abspath; | |
2569 | struct stat st; | |
32f4334d | 2570 | Lisp_Object handler; |
570d7624 JB |
2571 | |
2572 | abspath = expand_and_dir_to_file (filename, current_buffer->directory); | |
2573 | ||
32f4334d RS |
2574 | /* If the file name has special constructs in it, |
2575 | call the corresponding file handler. */ | |
49307295 | 2576 | handler = Ffind_file_name_handler (abspath, Qfile_directory_p); |
32f4334d | 2577 | if (!NILP (handler)) |
09121adc | 2578 | return call2 (handler, Qfile_directory_p, abspath); |
32f4334d | 2579 | |
570d7624 JB |
2580 | if (stat (XSTRING (abspath)->data, &st) < 0) |
2581 | return Qnil; | |
2582 | return (st.st_mode & S_IFMT) == S_IFDIR ? Qt : Qnil; | |
2583 | } | |
2584 | ||
b72dea2a JB |
2585 | DEFUN ("file-accessible-directory-p", Ffile_accessible_directory_p, Sfile_accessible_directory_p, 1, 1, 0, |
2586 | "Return t if file FILENAME is the name of a directory as a file,\n\ | |
2587 | and files in that directory can be opened by you. In order to use a\n\ | |
2588 | directory as a buffer's current directory, this predicate must return true.\n\ | |
2589 | A directory name spec may be given instead; then the value is t\n\ | |
2590 | if the directory so specified exists and really is a readable and\n\ | |
2591 | searchable directory.") | |
2592 | (filename) | |
2593 | Lisp_Object filename; | |
2594 | { | |
32f4334d | 2595 | Lisp_Object handler; |
1a04498e | 2596 | int tem; |
d26859eb | 2597 | struct gcpro gcpro1; |
32f4334d RS |
2598 | |
2599 | /* If the file name has special constructs in it, | |
2600 | call the corresponding file handler. */ | |
49307295 | 2601 | handler = Ffind_file_name_handler (filename, Qfile_accessible_directory_p); |
32f4334d RS |
2602 | if (!NILP (handler)) |
2603 | return call2 (handler, Qfile_accessible_directory_p, filename); | |
2604 | ||
d26859eb KH |
2605 | /* It's an unlikely combination, but yes we really do need to gcpro: |
2606 | Suppose that file-accessible-directory-p has no handler, but | |
2607 | file-directory-p does have a handler; this handler causes a GC which | |
2608 | relocates the string in `filename'; and finally file-directory-p | |
2609 | returns non-nil. Then we would end up passing a garbaged string | |
2610 | to file-executable-p. */ | |
2611 | GCPRO1 (filename); | |
1a04498e KH |
2612 | tem = (NILP (Ffile_directory_p (filename)) |
2613 | || NILP (Ffile_executable_p (filename))); | |
d26859eb | 2614 | UNGCPRO; |
1a04498e | 2615 | return tem ? Qnil : Qt; |
b72dea2a JB |
2616 | } |
2617 | ||
f793dc6c RS |
2618 | DEFUN ("file-regular-p", Ffile_regular_p, Sfile_regular_p, 1, 1, 0, |
2619 | "Return t if file FILENAME is the name of a regular file.\n\ | |
2620 | This is the sort of file that holds an ordinary stream of data bytes.") | |
2621 | (filename) | |
2622 | Lisp_Object filename; | |
2623 | { | |
2624 | register Lisp_Object abspath; | |
2625 | struct stat st; | |
2626 | Lisp_Object handler; | |
2627 | ||
2628 | abspath = expand_and_dir_to_file (filename, current_buffer->directory); | |
2629 | ||
2630 | /* If the file name has special constructs in it, | |
2631 | call the corresponding file handler. */ | |
adedc71d | 2632 | handler = Ffind_file_name_handler (abspath, Qfile_regular_p); |
f793dc6c | 2633 | if (!NILP (handler)) |
adedc71d | 2634 | return call2 (handler, Qfile_regular_p, abspath); |
f793dc6c RS |
2635 | |
2636 | if (stat (XSTRING (abspath)->data, &st) < 0) | |
2637 | return Qnil; | |
2638 | return (st.st_mode & S_IFMT) == S_IFREG ? Qt : Qnil; | |
2639 | } | |
2640 | \f | |
570d7624 JB |
2641 | DEFUN ("file-modes", Ffile_modes, Sfile_modes, 1, 1, 0, |
2642 | "Return mode bits of FILE, as an integer.") | |
2643 | (filename) | |
2644 | Lisp_Object filename; | |
2645 | { | |
2646 | Lisp_Object abspath; | |
2647 | struct stat st; | |
32f4334d | 2648 | Lisp_Object handler; |
570d7624 JB |
2649 | |
2650 | abspath = expand_and_dir_to_file (filename, current_buffer->directory); | |
2651 | ||
32f4334d RS |
2652 | /* If the file name has special constructs in it, |
2653 | call the corresponding file handler. */ | |
49307295 | 2654 | handler = Ffind_file_name_handler (abspath, Qfile_modes); |
32f4334d | 2655 | if (!NILP (handler)) |
09121adc | 2656 | return call2 (handler, Qfile_modes, abspath); |
32f4334d | 2657 | |
570d7624 JB |
2658 | if (stat (XSTRING (abspath)->data, &st) < 0) |
2659 | return Qnil; | |
5e570b75 | 2660 | #ifdef DOS_NT |
3be3c08e RS |
2661 | if (check_executable (XSTRING (abspath)->data)) |
2662 | st.st_mode |= S_IEXEC; | |
5e570b75 | 2663 | #endif /* DOS_NT */ |
3ace87e3 | 2664 | |
570d7624 JB |
2665 | return make_number (st.st_mode & 07777); |
2666 | } | |
2667 | ||
2668 | DEFUN ("set-file-modes", Fset_file_modes, Sset_file_modes, 2, 2, 0, | |
2669 | "Set mode bits of FILE to MODE (an integer).\n\ | |
2670 | Only the 12 low bits of MODE are used.") | |
2671 | (filename, mode) | |
2672 | Lisp_Object filename, mode; | |
2673 | { | |
2674 | Lisp_Object abspath; | |
32f4334d | 2675 | Lisp_Object handler; |
570d7624 JB |
2676 | |
2677 | abspath = Fexpand_file_name (filename, current_buffer->directory); | |
2678 | CHECK_NUMBER (mode, 1); | |
2679 | ||
32f4334d RS |
2680 | /* If the file name has special constructs in it, |
2681 | call the corresponding file handler. */ | |
49307295 | 2682 | handler = Ffind_file_name_handler (abspath, Qset_file_modes); |
32f4334d | 2683 | if (!NILP (handler)) |
09121adc | 2684 | return call3 (handler, Qset_file_modes, abspath, mode); |
32f4334d | 2685 | |
570d7624 JB |
2686 | if (chmod (XSTRING (abspath)->data, XINT (mode)) < 0) |
2687 | report_file_error ("Doing chmod", Fcons (abspath, Qnil)); | |
570d7624 JB |
2688 | |
2689 | return Qnil; | |
2690 | } | |
2691 | ||
c24e9a53 | 2692 | DEFUN ("set-default-file-modes", Fset_default_file_modes, Sset_default_file_modes, 1, 1, 0, |
5f85ea58 RS |
2693 | "Set the file permission bits for newly created files.\n\ |
2694 | The argument MODE should be an integer; only the low 9 bits are used.\n\ | |
36a8c287 | 2695 | This setting is inherited by subprocesses.") |
5f85ea58 RS |
2696 | (mode) |
2697 | Lisp_Object mode; | |
36a8c287 | 2698 | { |
5f85ea58 | 2699 | CHECK_NUMBER (mode, 0); |
36a8c287 | 2700 | |
5f85ea58 | 2701 | umask ((~ XINT (mode)) & 0777); |
36a8c287 JB |
2702 | |
2703 | return Qnil; | |
2704 | } | |
2705 | ||
c24e9a53 | 2706 | DEFUN ("default-file-modes", Fdefault_file_modes, Sdefault_file_modes, 0, 0, 0, |
5f85ea58 RS |
2707 | "Return the default file protection for created files.\n\ |
2708 | The value is an integer.") | |
36a8c287 JB |
2709 | () |
2710 | { | |
5f85ea58 RS |
2711 | int realmask; |
2712 | Lisp_Object value; | |
36a8c287 | 2713 | |
5f85ea58 RS |
2714 | realmask = umask (0); |
2715 | umask (realmask); | |
36a8c287 | 2716 | |
46283abe | 2717 | XSETINT (value, (~ realmask) & 0777); |
5f85ea58 | 2718 | return value; |
36a8c287 | 2719 | } |
f793dc6c | 2720 | \f |
85ffea93 RS |
2721 | #ifdef unix |
2722 | ||
2723 | DEFUN ("unix-sync", Funix_sync, Sunix_sync, 0, 0, "", | |
2724 | "Tell Unix to finish all pending disk updates.") | |
2725 | () | |
2726 | { | |
2727 | sync (); | |
2728 | return Qnil; | |
2729 | } | |
2730 | ||
2731 | #endif /* unix */ | |
2732 | ||
570d7624 JB |
2733 | DEFUN ("file-newer-than-file-p", Ffile_newer_than_file_p, Sfile_newer_than_file_p, 2, 2, 0, |
2734 | "Return t if file FILE1 is newer than file FILE2.\n\ | |
2735 | If FILE1 does not exist, the answer is nil;\n\ | |
2736 | otherwise, if FILE2 does not exist, the answer is t.") | |
2737 | (file1, file2) | |
2738 | Lisp_Object file1, file2; | |
2739 | { | |
32f4334d | 2740 | Lisp_Object abspath1, abspath2; |
570d7624 JB |
2741 | struct stat st; |
2742 | int mtime1; | |
32f4334d | 2743 | Lisp_Object handler; |
09121adc | 2744 | struct gcpro gcpro1, gcpro2; |
570d7624 JB |
2745 | |
2746 | CHECK_STRING (file1, 0); | |
2747 | CHECK_STRING (file2, 0); | |
2748 | ||
09121adc RS |
2749 | abspath1 = Qnil; |
2750 | GCPRO2 (abspath1, file2); | |
32f4334d RS |
2751 | abspath1 = expand_and_dir_to_file (file1, current_buffer->directory); |
2752 | abspath2 = expand_and_dir_to_file (file2, current_buffer->directory); | |
09121adc | 2753 | UNGCPRO; |
570d7624 | 2754 | |
32f4334d RS |
2755 | /* If the file name has special constructs in it, |
2756 | call the corresponding file handler. */ | |
49307295 | 2757 | handler = Ffind_file_name_handler (abspath1, Qfile_newer_than_file_p); |
51cf6d37 | 2758 | if (NILP (handler)) |
49307295 | 2759 | handler = Ffind_file_name_handler (abspath2, Qfile_newer_than_file_p); |
32f4334d RS |
2760 | if (!NILP (handler)) |
2761 | return call3 (handler, Qfile_newer_than_file_p, abspath1, abspath2); | |
2762 | ||
2763 | if (stat (XSTRING (abspath1)->data, &st) < 0) | |
570d7624 JB |
2764 | return Qnil; |
2765 | ||
2766 | mtime1 = st.st_mtime; | |
2767 | ||
32f4334d | 2768 | if (stat (XSTRING (abspath2)->data, &st) < 0) |
570d7624 JB |
2769 | return Qt; |
2770 | ||
2771 | return (mtime1 > st.st_mtime) ? Qt : Qnil; | |
2772 | } | |
2773 | \f | |
5e570b75 | 2774 | #ifdef DOS_NT |
4c3c22f3 | 2775 | Lisp_Object Qfind_buffer_file_type; |
5e570b75 | 2776 | #endif /* DOS_NT */ |
4c3c22f3 | 2777 | |
570d7624 | 2778 | DEFUN ("insert-file-contents", Finsert_file_contents, Sinsert_file_contents, |
3d0387c0 | 2779 | 1, 5, 0, |
570d7624 | 2780 | "Insert contents of file FILENAME after point.\n\ |
7fded690 | 2781 | Returns list of absolute file name and length of data inserted.\n\ |
570d7624 JB |
2782 | If second argument VISIT is non-nil, the buffer's visited filename\n\ |
2783 | and last save file modtime are set, and it is marked unmodified.\n\ | |
2784 | If visiting and the file does not exist, visiting is completed\n\ | |
7fded690 JB |
2785 | before the error is signaled.\n\n\ |
2786 | The optional third and fourth arguments BEG and END\n\ | |
2787 | specify what portion of the file to insert.\n\ | |
3d0387c0 RS |
2788 | If VISIT is non-nil, BEG and END must be nil.\n\ |
2789 | If optional fifth argument REPLACE is non-nil,\n\ | |
2790 | it means replace the current buffer contents (in the accessible portion)\n\ | |
2791 | with the file contents. This is better than simply deleting and inserting\n\ | |
2792 | the whole thing because (1) it preserves some marker positions\n\ | |
2793 | and (2) it puts less data in the undo list.") | |
2794 | (filename, visit, beg, end, replace) | |
2795 | Lisp_Object filename, visit, beg, end, replace; | |
570d7624 JB |
2796 | { |
2797 | struct stat st; | |
2798 | register int fd; | |
2799 | register int inserted = 0; | |
2800 | register int how_much; | |
2801 | int count = specpdl_ptr - specpdl; | |
1a04498e | 2802 | struct gcpro gcpro1, gcpro2, gcpro3; |
d6a3cc15 RS |
2803 | Lisp_Object handler, val, insval; |
2804 | Lisp_Object p; | |
7fded690 | 2805 | int total; |
53c34c46 | 2806 | int not_regular = 0; |
32f4334d | 2807 | |
95385625 RS |
2808 | if (current_buffer->base_buffer && ! NILP (visit)) |
2809 | error ("Cannot do file visiting in an indirect buffer"); | |
2810 | ||
2811 | if (!NILP (current_buffer->read_only)) | |
2812 | Fbarf_if_buffer_read_only (); | |
2813 | ||
32f4334d | 2814 | val = Qnil; |
d6a3cc15 | 2815 | p = Qnil; |
32f4334d | 2816 | |
1a04498e | 2817 | GCPRO3 (filename, val, p); |
570d7624 JB |
2818 | |
2819 | CHECK_STRING (filename, 0); | |
2820 | filename = Fexpand_file_name (filename, Qnil); | |
2821 | ||
32f4334d RS |
2822 | /* If the file name has special constructs in it, |
2823 | call the corresponding file handler. */ | |
49307295 | 2824 | handler = Ffind_file_name_handler (filename, Qinsert_file_contents); |
32f4334d RS |
2825 | if (!NILP (handler)) |
2826 | { | |
3d0387c0 RS |
2827 | val = call6 (handler, Qinsert_file_contents, filename, |
2828 | visit, beg, end, replace); | |
32f4334d RS |
2829 | goto handled; |
2830 | } | |
2831 | ||
570d7624 JB |
2832 | fd = -1; |
2833 | ||
2834 | #ifndef APOLLO | |
99bc28f4 | 2835 | if (stat (XSTRING (filename)->data, &st) < 0) |
570d7624 | 2836 | #else |
4018b5ef | 2837 | if ((fd = open (XSTRING (filename)->data, O_RDONLY)) < 0 |
570d7624 JB |
2838 | || fstat (fd, &st) < 0) |
2839 | #endif /* not APOLLO */ | |
2840 | { | |
2841 | if (fd >= 0) close (fd); | |
99bc28f4 | 2842 | badopen: |
265a9e55 | 2843 | if (NILP (visit)) |
570d7624 JB |
2844 | report_file_error ("Opening input file", Fcons (filename, Qnil)); |
2845 | st.st_mtime = -1; | |
2846 | how_much = 0; | |
2847 | goto notfound; | |
2848 | } | |
2849 | ||
99bc28f4 | 2850 | #ifdef S_IFREG |
be53b411 JB |
2851 | /* This code will need to be changed in order to work on named |
2852 | pipes, and it's probably just not worth it. So we should at | |
2853 | least signal an error. */ | |
99bc28f4 | 2854 | if (!S_ISREG (st.st_mode)) |
330bfe57 RS |
2855 | { |
2856 | if (NILP (visit)) | |
2857 | Fsignal (Qfile_error, | |
2858 | Fcons (build_string ("not a regular file"), | |
2859 | Fcons (filename, Qnil))); | |
2860 | ||
2861 | not_regular = 1; | |
2862 | goto notfound; | |
2863 | } | |
be53b411 JB |
2864 | #endif |
2865 | ||
99bc28f4 | 2866 | if (fd < 0) |
4018b5ef | 2867 | if ((fd = open (XSTRING (filename)->data, O_RDONLY)) < 0) |
99bc28f4 KH |
2868 | goto badopen; |
2869 | ||
2870 | /* Replacement should preserve point as it preserves markers. */ | |
2871 | if (!NILP (replace)) | |
2872 | record_unwind_protect (restore_point_unwind, Fpoint_marker ()); | |
2873 | ||
2874 | record_unwind_protect (close_file_unwind, make_number (fd)); | |
2875 | ||
570d7624 JB |
2876 | /* Supposedly happens on VMS. */ |
2877 | if (st.st_size < 0) | |
2878 | error ("File size is negative"); | |
be53b411 | 2879 | |
7fded690 JB |
2880 | if (!NILP (beg) || !NILP (end)) |
2881 | if (!NILP (visit)) | |
2882 | error ("Attempt to visit less than an entire file"); | |
2883 | ||
2884 | if (!NILP (beg)) | |
2885 | CHECK_NUMBER (beg, 0); | |
2886 | else | |
2acfd7ae | 2887 | XSETFASTINT (beg, 0); |
7fded690 JB |
2888 | |
2889 | if (!NILP (end)) | |
2890 | CHECK_NUMBER (end, 0); | |
2891 | else | |
2892 | { | |
2893 | XSETINT (end, st.st_size); | |
2894 | if (XINT (end) != st.st_size) | |
2895 | error ("maximum buffer size exceeded"); | |
2896 | } | |
2897 | ||
3d0387c0 RS |
2898 | /* If requested, replace the accessible part of the buffer |
2899 | with the file contents. Avoid replacing text at the | |
2900 | beginning or end of the buffer that matches the file contents; | |
2901 | that preserves markers pointing to the unchanged parts. */ | |
5e570b75 | 2902 | #ifdef DOS_NT |
e54d3b5d RS |
2903 | /* On MSDOS, replace mode doesn't really work, except for binary files, |
2904 | and it's not worth supporting just for them. */ | |
2905 | if (!NILP (replace)) | |
2906 | { | |
2907 | replace = Qnil; | |
2acfd7ae KH |
2908 | XSETFASTINT (beg, 0); |
2909 | XSETFASTINT (end, st.st_size); | |
e54d3b5d RS |
2910 | del_range_1 (BEGV, ZV, 0); |
2911 | } | |
5e570b75 | 2912 | #else /* not DOS_NT */ |
3d0387c0 RS |
2913 | if (!NILP (replace)) |
2914 | { | |
268466ed | 2915 | unsigned char buffer[1 << 14]; |
3d0387c0 RS |
2916 | int same_at_start = BEGV; |
2917 | int same_at_end = ZV; | |
9c28748f RS |
2918 | int overlap; |
2919 | ||
3d0387c0 RS |
2920 | immediate_quit = 1; |
2921 | QUIT; | |
2922 | /* Count how many chars at the start of the file | |
2923 | match the text at the beginning of the buffer. */ | |
2924 | while (1) | |
2925 | { | |
2926 | int nread, bufpos; | |
2927 | ||
2928 | nread = read (fd, buffer, sizeof buffer); | |
2929 | if (nread < 0) | |
2930 | error ("IO error reading %s: %s", | |
2931 | XSTRING (filename)->data, strerror (errno)); | |
2932 | else if (nread == 0) | |
2933 | break; | |
2934 | bufpos = 0; | |
2935 | while (bufpos < nread && same_at_start < ZV | |
2936 | && FETCH_CHAR (same_at_start) == buffer[bufpos]) | |
2937 | same_at_start++, bufpos++; | |
2938 | /* If we found a discrepancy, stop the scan. | |
8e6208c5 | 2939 | Otherwise loop around and scan the next bufferful. */ |
3d0387c0 RS |
2940 | if (bufpos != nread) |
2941 | break; | |
2942 | } | |
2943 | immediate_quit = 0; | |
2944 | /* If the file matches the buffer completely, | |
2945 | there's no need to replace anything. */ | |
1051b3b3 | 2946 | if (same_at_start - BEGV == st.st_size) |
3d0387c0 RS |
2947 | { |
2948 | close (fd); | |
a1d2b64a | 2949 | specpdl_ptr--; |
1051b3b3 RS |
2950 | /* Truncate the buffer to the size of the file. */ |
2951 | del_range_1 (same_at_start, same_at_end, 0); | |
3d0387c0 RS |
2952 | goto handled; |
2953 | } | |
2954 | immediate_quit = 1; | |
2955 | QUIT; | |
2956 | /* Count how many chars at the end of the file | |
2957 | match the text at the end of the buffer. */ | |
2958 | while (1) | |
2959 | { | |
2960 | int total_read, nread, bufpos, curpos, trial; | |
2961 | ||
2962 | /* At what file position are we now scanning? */ | |
2963 | curpos = st.st_size - (ZV - same_at_end); | |
fc81fa9e KH |
2964 | /* If the entire file matches the buffer tail, stop the scan. */ |
2965 | if (curpos == 0) | |
2966 | break; | |
3d0387c0 RS |
2967 | /* How much can we scan in the next step? */ |
2968 | trial = min (curpos, sizeof buffer); | |
2969 | if (lseek (fd, curpos - trial, 0) < 0) | |
2970 | report_file_error ("Setting file position", | |
2971 | Fcons (filename, Qnil)); | |
2972 | ||
2973 | total_read = 0; | |
2974 | while (total_read < trial) | |
2975 | { | |
2976 | nread = read (fd, buffer + total_read, trial - total_read); | |
2977 | if (nread <= 0) | |
2978 | error ("IO error reading %s: %s", | |
2979 | XSTRING (filename)->data, strerror (errno)); | |
2980 | total_read += nread; | |
2981 | } | |
8e6208c5 | 2982 | /* Scan this bufferful from the end, comparing with |
3d0387c0 RS |
2983 | the Emacs buffer. */ |
2984 | bufpos = total_read; | |
2985 | /* Compare with same_at_start to avoid counting some buffer text | |
2986 | as matching both at the file's beginning and at the end. */ | |
2987 | while (bufpos > 0 && same_at_end > same_at_start | |
2988 | && FETCH_CHAR (same_at_end - 1) == buffer[bufpos - 1]) | |
2989 | same_at_end--, bufpos--; | |
2990 | /* If we found a discrepancy, stop the scan. | |
8e6208c5 | 2991 | Otherwise loop around and scan the preceding bufferful. */ |
3d0387c0 RS |
2992 | if (bufpos != 0) |
2993 | break; | |
26fb39b5 RS |
2994 | /* If display current starts at beginning of line, |
2995 | keep it that way. */ | |
2996 | if (XBUFFER (XWINDOW (selected_window)->buffer) == current_buffer) | |
2997 | XWINDOW (selected_window)->start_at_line_beg = Fbolp (); | |
3d0387c0 RS |
2998 | } |
2999 | immediate_quit = 0; | |
9c28748f RS |
3000 | |
3001 | /* Don't try to reuse the same piece of text twice. */ | |
3002 | overlap = same_at_start - BEGV - (same_at_end + st.st_size - ZV); | |
3003 | if (overlap > 0) | |
3004 | same_at_end += overlap; | |
3005 | ||
3d0387c0 | 3006 | /* Arrange to read only the nonmatching middle part of the file. */ |
2acfd7ae KH |
3007 | XSETFASTINT (beg, same_at_start - BEGV); |
3008 | XSETFASTINT (end, st.st_size - (ZV - same_at_end)); | |
9c28748f | 3009 | |
251f623e | 3010 | del_range_1 (same_at_start, same_at_end, 0); |
a1d2b64a RS |
3011 | /* Insert from the file at the proper position. */ |
3012 | SET_PT (same_at_start); | |
3d0387c0 | 3013 | } |
5e570b75 | 3014 | #endif /* not DOS_NT */ |
3d0387c0 | 3015 | |
7fded690 JB |
3016 | total = XINT (end) - XINT (beg); |
3017 | ||
570d7624 JB |
3018 | { |
3019 | register Lisp_Object temp; | |
3020 | ||
3021 | /* Make sure point-max won't overflow after this insertion. */ | |
46283abe | 3022 | XSETINT (temp, total); |
7fded690 | 3023 | if (total != XINT (temp)) |
570d7624 JB |
3024 | error ("maximum buffer size exceeded"); |
3025 | } | |
3026 | ||
57d8d468 | 3027 | if (NILP (visit) && total > 0) |
570d7624 JB |
3028 | prepare_to_modify_buffer (point, point); |
3029 | ||
3030 | move_gap (point); | |
7fded690 JB |
3031 | if (GAP_SIZE < total) |
3032 | make_gap (total - GAP_SIZE); | |
3033 | ||
a1d2b64a | 3034 | if (XINT (beg) != 0 || !NILP (replace)) |
7fded690 JB |
3035 | { |
3036 | if (lseek (fd, XINT (beg), 0) < 0) | |
3037 | report_file_error ("Setting file position", Fcons (filename, Qnil)); | |
3038 | } | |
3039 | ||
a1d2b64a RS |
3040 | how_much = 0; |
3041 | while (inserted < total) | |
570d7624 | 3042 | { |
5e570b75 RS |
3043 | /* try is reserved in some compilers (Microsoft C) */ |
3044 | int trytry = min (total - inserted, 64 << 10); | |
b5148e85 RS |
3045 | int this; |
3046 | ||
3047 | /* Allow quitting out of the actual I/O. */ | |
3048 | immediate_quit = 1; | |
3049 | QUIT; | |
5e570b75 | 3050 | this = read (fd, &FETCH_CHAR (point + inserted - 1) + 1, trytry); |
b5148e85 | 3051 | immediate_quit = 0; |
570d7624 JB |
3052 | |
3053 | if (this <= 0) | |
3054 | { | |
3055 | how_much = this; | |
3056 | break; | |
3057 | } | |
3058 | ||
3059 | GPT += this; | |
3060 | GAP_SIZE -= this; | |
3061 | ZV += this; | |
3062 | Z += this; | |
3063 | inserted += this; | |
3064 | } | |
3065 | ||
5e570b75 | 3066 | #ifdef DOS_NT |
4c3c22f3 RS |
3067 | /* Demacs 1.1.1 91/10/16 HIRANO Satoshi, MW July 1993 */ |
3068 | /* Determine file type from name and remove LFs from CR-LFs if the file | |
3069 | is deemed to be a text file. */ | |
3070 | { | |
bf162ea8 RS |
3071 | current_buffer->buffer_file_type |
3072 | = call1 (Qfind_buffer_file_type, filename); | |
bf162ea8 | 3073 | if (NILP (current_buffer->buffer_file_type)) |
4c3c22f3 | 3074 | { |
a1d2b64a RS |
3075 | int reduced_size |
3076 | = inserted - crlf_to_lf (inserted, &FETCH_CHAR (point - 1) + 1); | |
4c3c22f3 RS |
3077 | ZV -= reduced_size; |
3078 | Z -= reduced_size; | |
3079 | GPT -= reduced_size; | |
3080 | GAP_SIZE += reduced_size; | |
3081 | inserted -= reduced_size; | |
3082 | } | |
3083 | } | |
5e570b75 | 3084 | #endif /* DOS_NT */ |
4c3c22f3 | 3085 | |
570d7624 | 3086 | if (inserted > 0) |
7d8451f1 RS |
3087 | { |
3088 | record_insert (point, inserted); | |
8d4e077b JA |
3089 | |
3090 | /* Only defined if Emacs is compiled with USE_TEXT_PROPERTIES */ | |
3091 | offset_intervals (current_buffer, point, inserted); | |
7d8451f1 RS |
3092 | MODIFF++; |
3093 | } | |
570d7624 JB |
3094 | |
3095 | close (fd); | |
3096 | ||
a1d2b64a RS |
3097 | /* Discard the unwind protect for closing the file. */ |
3098 | specpdl_ptr--; | |
570d7624 JB |
3099 | |
3100 | if (how_much < 0) | |
3101 | error ("IO error reading %s: %s", | |
ce97267f | 3102 | XSTRING (filename)->data, strerror (errno)); |
570d7624 JB |
3103 | |
3104 | notfound: | |
32f4334d | 3105 | handled: |
570d7624 | 3106 | |
265a9e55 | 3107 | if (!NILP (visit)) |
570d7624 | 3108 | { |
cfadd376 RS |
3109 | if (!EQ (current_buffer->undo_list, Qt)) |
3110 | current_buffer->undo_list = Qnil; | |
570d7624 JB |
3111 | #ifdef APOLLO |
3112 | stat (XSTRING (filename)->data, &st); | |
3113 | #endif | |
62bcf009 | 3114 | |
a7e82472 RS |
3115 | if (NILP (handler)) |
3116 | { | |
3117 | current_buffer->modtime = st.st_mtime; | |
3118 | current_buffer->filename = filename; | |
3119 | } | |
62bcf009 | 3120 | |
95385625 | 3121 | SAVE_MODIFF = MODIFF; |
570d7624 | 3122 | current_buffer->auto_save_modified = MODIFF; |
2acfd7ae | 3123 | XSETFASTINT (current_buffer->save_length, Z - BEG); |
570d7624 | 3124 | #ifdef CLASH_DETECTION |
32f4334d RS |
3125 | if (NILP (handler)) |
3126 | { | |
f471f4c2 RS |
3127 | if (!NILP (current_buffer->file_truename)) |
3128 | unlock_file (current_buffer->file_truename); | |
32f4334d RS |
3129 | unlock_file (filename); |
3130 | } | |
570d7624 | 3131 | #endif /* CLASH_DETECTION */ |
330bfe57 RS |
3132 | if (not_regular) |
3133 | Fsignal (Qfile_error, | |
3134 | Fcons (build_string ("not a regular file"), | |
3135 | Fcons (filename, Qnil))); | |
3136 | ||
570d7624 | 3137 | /* If visiting nonexistent file, return nil. */ |
32f4334d | 3138 | if (current_buffer->modtime == -1) |
570d7624 JB |
3139 | report_file_error ("Opening input file", Fcons (filename, Qnil)); |
3140 | } | |
3141 | ||
0d420e88 BG |
3142 | /* Decode file format */ |
3143 | if (inserted > 0) | |
3144 | { | |
3145 | insval = call3 (Qformat_decode, | |
3146 | Qnil, make_number (inserted), visit); | |
3147 | CHECK_NUMBER (insval, 0); | |
3148 | inserted = XFASTINT (insval); | |
3149 | } | |
3150 | ||
62bcf009 | 3151 | if (inserted > 0 && NILP (visit) && total > 0) |
d2cad97d | 3152 | signal_after_change (point, 0, inserted); |
570d7624 | 3153 | |
d6a3cc15 RS |
3154 | if (inserted > 0) |
3155 | { | |
3156 | p = Vafter_insert_file_functions; | |
3157 | while (!NILP (p)) | |
3158 | { | |
3159 | insval = call1 (Fcar (p), make_number (inserted)); | |
3160 | if (!NILP (insval)) | |
3161 | { | |
3162 | CHECK_NUMBER (insval, 0); | |
3163 | inserted = XFASTINT (insval); | |
3164 | } | |
3165 | QUIT; | |
3166 | p = Fcdr (p); | |
3167 | } | |
3168 | } | |
3169 | ||
a1d2b64a RS |
3170 | if (NILP (val)) |
3171 | val = Fcons (filename, | |
3172 | Fcons (make_number (inserted), | |
3173 | Qnil)); | |
3174 | ||
3175 | RETURN_UNGCPRO (unbind_to (count, val)); | |
570d7624 | 3176 | } |
7fded690 | 3177 | \f |
d6a3cc15 RS |
3178 | static Lisp_Object build_annotations (); |
3179 | ||
6fc6f94b RS |
3180 | /* If build_annotations switched buffers, switch back to BUF. |
3181 | Kill the temporary buffer that was selected in the meantime. */ | |
3182 | ||
3183 | static Lisp_Object | |
3184 | build_annotations_unwind (buf) | |
3185 | Lisp_Object buf; | |
3186 | { | |
3187 | Lisp_Object tembuf; | |
3188 | ||
3189 | if (XBUFFER (buf) == current_buffer) | |
3190 | return Qnil; | |
3191 | tembuf = Fcurrent_buffer (); | |
3192 | Fset_buffer (buf); | |
3193 | Fkill_buffer (tembuf); | |
3194 | return Qnil; | |
3195 | } | |
3196 | ||
7204a979 | 3197 | DEFUN ("write-region", Fwrite_region, Swrite_region, 3, 6, |
570d7624 JB |
3198 | "r\nFWrite region to file: ", |
3199 | "Write current region into specified file.\n\ | |
3200 | When called from a program, takes three arguments:\n\ | |
3201 | START, END and FILENAME. START and END are buffer positions.\n\ | |
3202 | Optional fourth argument APPEND if non-nil means\n\ | |
3203 | append to existing file contents (if any).\n\ | |
3204 | Optional fifth argument VISIT if t means\n\ | |
3205 | set the last-save-file-modtime of buffer to this file's modtime\n\ | |
3206 | and mark buffer not modified.\n\ | |
3b7792ed RS |
3207 | If VISIT is a string, it is a second file name;\n\ |
3208 | the output goes to FILENAME, but the buffer is marked as visiting VISIT.\n\ | |
3209 | VISIT is also the file name to lock and unlock for clash detection.\n\ | |
1d386d28 RS |
3210 | If VISIT is neither t nor nil nor a string,\n\ |
3211 | that means do not print the \"Wrote file\" message.\n\ | |
7204a979 RS |
3212 | The optional sixth arg LOCKNAME, if non-nil, specifies the name to\n\ |
3213 | use for locking and unlocking, overriding FILENAME and VISIT.\n\ | |
570d7624 JB |
3214 | Kludgy feature: if START is a string, then that string is written\n\ |
3215 | to the file, instead of any buffer contents, and END is ignored.") | |
7204a979 RS |
3216 | (start, end, filename, append, visit, lockname) |
3217 | Lisp_Object start, end, filename, append, visit, lockname; | |
570d7624 JB |
3218 | { |
3219 | register int desc; | |
3220 | int failure; | |
3221 | int save_errno; | |
3222 | unsigned char *fn; | |
3223 | struct stat st; | |
c975dd7a | 3224 | int tem; |
570d7624 | 3225 | int count = specpdl_ptr - specpdl; |
6fc6f94b | 3226 | int count1; |
570d7624 | 3227 | #ifdef VMS |
5e570b75 | 3228 | unsigned char *fname = 0; /* If non-0, original filename (must rename) */ |
570d7624 | 3229 | #endif /* VMS */ |
3eac9910 | 3230 | Lisp_Object handler; |
4ad827c5 | 3231 | Lisp_Object visit_file; |
d6a3cc15 RS |
3232 | Lisp_Object annotations; |
3233 | int visiting, quietly; | |
7204a979 | 3234 | struct gcpro gcpro1, gcpro2, gcpro3, gcpro4, gcpro5; |
6fc6f94b | 3235 | struct buffer *given_buffer; |
5e570b75 | 3236 | #ifdef DOS_NT |
4c3c22f3 RS |
3237 | int buffer_file_type |
3238 | = NILP (current_buffer->buffer_file_type) ? O_TEXT : O_BINARY; | |
5e570b75 | 3239 | #endif /* DOS_NT */ |
570d7624 | 3240 | |
95385625 RS |
3241 | if (current_buffer->base_buffer && ! NILP (visit)) |
3242 | error ("Cannot do file visiting in an indirect buffer"); | |
3243 | ||
561cb8e1 | 3244 | if (!NILP (start) && !STRINGP (start)) |
570d7624 JB |
3245 | validate_region (&start, &end); |
3246 | ||
7204a979 | 3247 | GCPRO3 (filename, visit, lockname); |
570d7624 | 3248 | filename = Fexpand_file_name (filename, Qnil); |
561cb8e1 | 3249 | if (STRINGP (visit)) |
e5176bae | 3250 | visit_file = Fexpand_file_name (visit, Qnil); |
4ad827c5 RS |
3251 | else |
3252 | visit_file = filename; | |
1a04498e | 3253 | UNGCPRO; |
4ad827c5 | 3254 | |
561cb8e1 | 3255 | visiting = (EQ (visit, Qt) || STRINGP (visit)); |
d6a3cc15 RS |
3256 | quietly = !NILP (visit); |
3257 | ||
3258 | annotations = Qnil; | |
3259 | ||
7204a979 RS |
3260 | if (NILP (lockname)) |
3261 | lockname = visit_file; | |
3262 | ||
3263 | GCPRO5 (start, filename, annotations, visit_file, lockname); | |
570d7624 | 3264 | |
32f4334d RS |
3265 | /* If the file name has special constructs in it, |
3266 | call the corresponding file handler. */ | |
49307295 | 3267 | handler = Ffind_file_name_handler (filename, Qwrite_region); |
b56ad927 | 3268 | /* If FILENAME has no handler, see if VISIT has one. */ |
93c30b5f | 3269 | if (NILP (handler) && STRINGP (visit)) |
49307295 | 3270 | handler = Ffind_file_name_handler (visit, Qwrite_region); |
3eac9910 | 3271 | |
32f4334d RS |
3272 | if (!NILP (handler)) |
3273 | { | |
32f4334d | 3274 | Lisp_Object val; |
51cf6d37 RS |
3275 | val = call6 (handler, Qwrite_region, start, end, |
3276 | filename, append, visit); | |
32f4334d | 3277 | |
d6a3cc15 | 3278 | if (visiting) |
32f4334d | 3279 | { |
95385625 | 3280 | SAVE_MODIFF = MODIFF; |
2acfd7ae | 3281 | XSETFASTINT (current_buffer->save_length, Z - BEG); |
3b7792ed | 3282 | current_buffer->filename = visit_file; |
32f4334d | 3283 | } |
09121adc | 3284 | UNGCPRO; |
32f4334d RS |
3285 | return val; |
3286 | } | |
3287 | ||
561cb8e1 RS |
3288 | /* Special kludge to simplify auto-saving. */ |
3289 | if (NILP (start)) | |
3290 | { | |
2acfd7ae KH |
3291 | XSETFASTINT (start, BEG); |
3292 | XSETFASTINT (end, Z); | |
561cb8e1 RS |
3293 | } |
3294 | ||
6fc6f94b RS |
3295 | record_unwind_protect (build_annotations_unwind, Fcurrent_buffer ()); |
3296 | count1 = specpdl_ptr - specpdl; | |
3297 | ||
3298 | given_buffer = current_buffer; | |
d6a3cc15 | 3299 | annotations = build_annotations (start, end); |
6fc6f94b RS |
3300 | if (current_buffer != given_buffer) |
3301 | { | |
3302 | start = BEGV; | |
3303 | end = ZV; | |
3304 | } | |
d6a3cc15 | 3305 | |
570d7624 JB |
3306 | #ifdef CLASH_DETECTION |
3307 | if (!auto_saving) | |
7204a979 | 3308 | lock_file (lockname); |
570d7624 JB |
3309 | #endif /* CLASH_DETECTION */ |
3310 | ||
09121adc | 3311 | fn = XSTRING (filename)->data; |
570d7624 | 3312 | desc = -1; |
265a9e55 | 3313 | if (!NILP (append)) |
5e570b75 | 3314 | #ifdef DOS_NT |
4c3c22f3 | 3315 | desc = open (fn, O_WRONLY | buffer_file_type); |
5e570b75 | 3316 | #else /* not DOS_NT */ |
570d7624 | 3317 | desc = open (fn, O_WRONLY); |
5e570b75 | 3318 | #endif /* not DOS_NT */ |
570d7624 JB |
3319 | |
3320 | if (desc < 0) | |
3321 | #ifdef VMS | |
5e570b75 | 3322 | if (auto_saving) /* Overwrite any previous version of autosave file */ |
570d7624 | 3323 | { |
5e570b75 | 3324 | vms_truncate (fn); /* if fn exists, truncate to zero length */ |
570d7624 JB |
3325 | desc = open (fn, O_RDWR); |
3326 | if (desc < 0) | |
561cb8e1 | 3327 | desc = creat_copy_attrs (STRINGP (current_buffer->filename) |
b72dea2a JB |
3328 | ? XSTRING (current_buffer->filename)->data : 0, |
3329 | fn); | |
570d7624 | 3330 | } |
5e570b75 | 3331 | else /* Write to temporary name and rename if no errors */ |
570d7624 JB |
3332 | { |
3333 | Lisp_Object temp_name; | |
3334 | temp_name = Ffile_name_directory (filename); | |
3335 | ||
265a9e55 | 3336 | if (!NILP (temp_name)) |
570d7624 JB |
3337 | { |
3338 | temp_name = Fmake_temp_name (concat2 (temp_name, | |
3339 | build_string ("$$SAVE$$"))); | |
3340 | fname = XSTRING (filename)->data; | |
3341 | fn = XSTRING (temp_name)->data; | |
3342 | desc = creat_copy_attrs (fname, fn); | |
3343 | if (desc < 0) | |
3344 | { | |
3345 | /* If we can't open the temporary file, try creating a new | |
3346 | version of the original file. VMS "creat" creates a | |
3347 | new version rather than truncating an existing file. */ | |
3348 | fn = fname; | |
3349 | fname = 0; | |
3350 | desc = creat (fn, 0666); | |
3351 | #if 0 /* This can clobber an existing file and fail to replace it, | |
3352 | if the user runs out of space. */ | |
3353 | if (desc < 0) | |
3354 | { | |
3355 | /* We can't make a new version; | |
3356 | try to truncate and rewrite existing version if any. */ | |
3357 | vms_truncate (fn); | |
3358 | desc = open (fn, O_RDWR); | |
3359 | } | |
3360 | #endif | |
3361 | } | |
3362 | } | |
3363 | else | |
3364 | desc = creat (fn, 0666); | |
3365 | } | |
3366 | #else /* not VMS */ | |
5e570b75 | 3367 | #ifdef DOS_NT |
4c3c22f3 RS |
3368 | desc = open (fn, |
3369 | O_WRONLY | O_TRUNC | O_CREAT | buffer_file_type, | |
3370 | S_IREAD | S_IWRITE); | |
5e570b75 | 3371 | #else /* not DOS_NT */ |
570d7624 | 3372 | desc = creat (fn, auto_saving ? auto_save_mode_bits : 0666); |
5e570b75 | 3373 | #endif /* not DOS_NT */ |
570d7624 JB |
3374 | #endif /* not VMS */ |
3375 | ||
09121adc RS |
3376 | UNGCPRO; |
3377 | ||
570d7624 JB |
3378 | if (desc < 0) |
3379 | { | |
3380 | #ifdef CLASH_DETECTION | |
3381 | save_errno = errno; | |
7204a979 | 3382 | if (!auto_saving) unlock_file (lockname); |
570d7624 JB |
3383 | errno = save_errno; |
3384 | #endif /* CLASH_DETECTION */ | |
3385 | report_file_error ("Opening output file", Fcons (filename, Qnil)); | |
3386 | } | |
3387 | ||
3388 | record_unwind_protect (close_file_unwind, make_number (desc)); | |
3389 | ||
265a9e55 | 3390 | if (!NILP (append)) |
570d7624 JB |
3391 | if (lseek (desc, 0, 2) < 0) |
3392 | { | |
3393 | #ifdef CLASH_DETECTION | |
7204a979 | 3394 | if (!auto_saving) unlock_file (lockname); |
570d7624 JB |
3395 | #endif /* CLASH_DETECTION */ |
3396 | report_file_error ("Lseek error", Fcons (filename, Qnil)); | |
3397 | } | |
3398 | ||
3399 | #ifdef VMS | |
3400 | /* | |
3401 | * Kludge Warning: The VMS C RTL likes to insert carriage returns | |
3402 | * if we do writes that don't end with a carriage return. Furthermore | |
3403 | * it cannot handle writes of more then 16K. The modified | |
3404 | * version of "sys_write" in SYSDEP.C (see comment there) copes with | |
3405 | * this EXCEPT for the last record (iff it doesn't end with a carriage | |
3406 | * return). This implies that if your buffer doesn't end with a carriage | |
3407 | * return, you get one free... tough. However it also means that if | |
3408 | * we make two calls to sys_write (a la the following code) you can | |
3409 | * get one at the gap as well. The easiest way to fix this (honest) | |
3410 | * is to move the gap to the next newline (or the end of the buffer). | |
3411 | * Thus this change. | |
3412 | * | |
3413 | * Yech! | |
3414 | */ | |
3415 | if (GPT > BEG && GPT_ADDR[-1] != '\n') | |
3416 | move_gap (find_next_newline (GPT, 1)); | |
3417 | #endif | |
3418 | ||
3419 | failure = 0; | |
3420 | immediate_quit = 1; | |
3421 | ||
561cb8e1 | 3422 | if (STRINGP (start)) |
570d7624 | 3423 | { |
d6a3cc15 RS |
3424 | failure = 0 > a_write (desc, XSTRING (start)->data, |
3425 | XSTRING (start)->size, 0, &annotations); | |
570d7624 JB |
3426 | save_errno = errno; |
3427 | } | |
3428 | else if (XINT (start) != XINT (end)) | |
3429 | { | |
c975dd7a | 3430 | int nwritten = 0; |
570d7624 JB |
3431 | if (XINT (start) < GPT) |
3432 | { | |
3433 | register int end1 = XINT (end); | |
3434 | tem = XINT (start); | |
d6a3cc15 | 3435 | failure = 0 > a_write (desc, &FETCH_CHAR (tem), |
c975dd7a RS |
3436 | min (GPT, end1) - tem, tem, &annotations); |
3437 | nwritten += min (GPT, end1) - tem; | |
570d7624 JB |
3438 | save_errno = errno; |
3439 | } | |
3440 | ||
3441 | if (XINT (end) > GPT && !failure) | |
3442 | { | |
3443 | tem = XINT (start); | |
3444 | tem = max (tem, GPT); | |
d6a3cc15 | 3445 | failure = 0 > a_write (desc, &FETCH_CHAR (tem), XINT (end) - tem, |
c975dd7a RS |
3446 | tem, &annotations); |
3447 | nwritten += XINT (end) - tem; | |
d6a3cc15 RS |
3448 | save_errno = errno; |
3449 | } | |
69f6e679 RS |
3450 | } |
3451 | else | |
3452 | { | |
3453 | /* If file was empty, still need to write the annotations */ | |
3454 | failure = 0 > a_write (desc, "", 0, XINT (start), &annotations); | |
3455 | save_errno = errno; | |
570d7624 JB |
3456 | } |
3457 | ||
3458 | immediate_quit = 0; | |
3459 | ||
6e23c83e | 3460 | #ifdef HAVE_FSYNC |
570d7624 JB |
3461 | /* Note fsync appears to change the modtime on BSD4.2 (both vax and sun). |
3462 | Disk full in NFS may be reported here. */ | |
1daffa1c RS |
3463 | /* mib says that closing the file will try to write as fast as NFS can do |
3464 | it, and that means the fsync here is not crucial for autosave files. */ | |
3465 | if (!auto_saving && fsync (desc) < 0) | |
cb33c142 KH |
3466 | { |
3467 | /* If fsync fails with EINTR, don't treat that as serious. */ | |
3468 | if (errno != EINTR) | |
3469 | failure = 1, save_errno = errno; | |
3470 | } | |
570d7624 JB |
3471 | #endif |
3472 | ||
3473 | /* Spurious "file has changed on disk" warnings have been | |
3474 | observed on Suns as well. | |
3475 | It seems that `close' can change the modtime, under nfs. | |
3476 | ||
3477 | (This has supposedly been fixed in Sunos 4, | |
3478 | but who knows about all the other machines with NFS?) */ | |
3479 | #if 0 | |
3480 | ||
3481 | /* On VMS and APOLLO, must do the stat after the close | |
3482 | since closing changes the modtime. */ | |
3483 | #ifndef VMS | |
3484 | #ifndef APOLLO | |
3485 | /* Recall that #if defined does not work on VMS. */ | |
3486 | #define FOO | |
3487 | fstat (desc, &st); | |
3488 | #endif | |
3489 | #endif | |
3490 | #endif | |
3491 | ||
3492 | /* NFS can report a write failure now. */ | |
3493 | if (close (desc) < 0) | |
3494 | failure = 1, save_errno = errno; | |
3495 | ||
3496 | #ifdef VMS | |
3497 | /* If we wrote to a temporary name and had no errors, rename to real name. */ | |
3498 | if (fname) | |
3499 | { | |
3500 | if (!failure) | |
3501 | failure = (rename (fn, fname) != 0), save_errno = errno; | |
3502 | fn = fname; | |
3503 | } | |
3504 | #endif /* VMS */ | |
3505 | ||
3506 | #ifndef FOO | |
3507 | stat (fn, &st); | |
3508 | #endif | |
6fc6f94b RS |
3509 | /* Discard the unwind protect for close_file_unwind. */ |
3510 | specpdl_ptr = specpdl + count1; | |
3511 | /* Restore the original current buffer. */ | |
98295b48 | 3512 | visit_file = unbind_to (count, visit_file); |
570d7624 JB |
3513 | |
3514 | #ifdef CLASH_DETECTION | |
3515 | if (!auto_saving) | |
7204a979 | 3516 | unlock_file (lockname); |
570d7624 JB |
3517 | #endif /* CLASH_DETECTION */ |
3518 | ||
3519 | /* Do this before reporting IO error | |
3520 | to avoid a "file has changed on disk" warning on | |
3521 | next attempt to save. */ | |
d6a3cc15 | 3522 | if (visiting) |
570d7624 JB |
3523 | current_buffer->modtime = st.st_mtime; |
3524 | ||
3525 | if (failure) | |
ce97267f | 3526 | error ("IO error writing %s: %s", fn, strerror (save_errno)); |
570d7624 | 3527 | |
d6a3cc15 | 3528 | if (visiting) |
570d7624 | 3529 | { |
95385625 | 3530 | SAVE_MODIFF = MODIFF; |
2acfd7ae | 3531 | XSETFASTINT (current_buffer->save_length, Z - BEG); |
3b7792ed | 3532 | current_buffer->filename = visit_file; |
f4226e89 | 3533 | update_mode_lines++; |
570d7624 | 3534 | } |
d6a3cc15 | 3535 | else if (quietly) |
570d7624 JB |
3536 | return Qnil; |
3537 | ||
3538 | if (!auto_saving) | |
3b7792ed | 3539 | message ("Wrote %s", XSTRING (visit_file)->data); |
570d7624 JB |
3540 | |
3541 | return Qnil; | |
3542 | } | |
3543 | ||
d6a3cc15 RS |
3544 | Lisp_Object merge (); |
3545 | ||
3546 | DEFUN ("car-less-than-car", Fcar_less_than_car, Scar_less_than_car, 2, 2, 0, | |
2ba0ccff | 3547 | "Return t if (car A) is numerically less than (car B).") |
d6a3cc15 RS |
3548 | (a, b) |
3549 | Lisp_Object a, b; | |
3550 | { | |
3551 | return Flss (Fcar (a), Fcar (b)); | |
3552 | } | |
3553 | ||
3554 | /* Build the complete list of annotations appropriate for writing out | |
3555 | the text between START and END, by calling all the functions in | |
6fc6f94b RS |
3556 | write-region-annotate-functions and merging the lists they return. |
3557 | If one of these functions switches to a different buffer, we assume | |
3558 | that buffer contains altered text. Therefore, the caller must | |
3559 | make sure to restore the current buffer in all cases, | |
3560 | as save-excursion would do. */ | |
d6a3cc15 RS |
3561 | |
3562 | static Lisp_Object | |
3563 | build_annotations (start, end) | |
3564 | Lisp_Object start, end; | |
3565 | { | |
3566 | Lisp_Object annotations; | |
3567 | Lisp_Object p, res; | |
3568 | struct gcpro gcpro1, gcpro2; | |
3569 | ||
3570 | annotations = Qnil; | |
3571 | p = Vwrite_region_annotate_functions; | |
3572 | GCPRO2 (annotations, p); | |
3573 | while (!NILP (p)) | |
3574 | { | |
6fc6f94b RS |
3575 | struct buffer *given_buffer = current_buffer; |
3576 | Vwrite_region_annotations_so_far = annotations; | |
d6a3cc15 | 3577 | res = call2 (Fcar (p), start, end); |
6fc6f94b RS |
3578 | /* If the function makes a different buffer current, |
3579 | assume that means this buffer contains altered text to be output. | |
3580 | Reset START and END from the buffer bounds | |
3581 | and discard all previous annotations because they should have | |
3582 | been dealt with by this function. */ | |
3583 | if (current_buffer != given_buffer) | |
3584 | { | |
6fc6f94b RS |
3585 | start = BEGV; |
3586 | end = ZV; | |
3587 | annotations = Qnil; | |
3588 | } | |
d6a3cc15 RS |
3589 | Flength (res); /* Check basic validity of return value */ |
3590 | annotations = merge (annotations, res, Qcar_less_than_car); | |
3591 | p = Fcdr (p); | |
3592 | } | |
0d420e88 BG |
3593 | |
3594 | /* Now do the same for annotation functions implied by the file-format */ | |
3595 | if (auto_saving && (!EQ (Vauto_save_file_format, Qt))) | |
3596 | p = Vauto_save_file_format; | |
3597 | else | |
3598 | p = current_buffer->file_format; | |
3599 | while (!NILP (p)) | |
3600 | { | |
3601 | struct buffer *given_buffer = current_buffer; | |
3602 | Vwrite_region_annotations_so_far = annotations; | |
3603 | res = call3 (Qformat_annotate_function, Fcar (p), start, end); | |
3604 | if (current_buffer != given_buffer) | |
3605 | { | |
3606 | start = BEGV; | |
3607 | end = ZV; | |
3608 | annotations = Qnil; | |
3609 | } | |
3610 | Flength (res); | |
3611 | annotations = merge (annotations, res, Qcar_less_than_car); | |
3612 | p = Fcdr (p); | |
3613 | } | |
d6a3cc15 RS |
3614 | UNGCPRO; |
3615 | return annotations; | |
3616 | } | |
3617 | ||
3618 | /* Write to descriptor DESC the LEN characters starting at ADDR, | |
3619 | assuming they start at position POS in the buffer. | |
3620 | Intersperse with them the annotations from *ANNOT | |
3621 | (those which fall within the range of positions POS to POS + LEN), | |
3622 | each at its appropriate position. | |
3623 | ||
3624 | Modify *ANNOT by discarding elements as we output them. | |
3625 | The return value is negative in case of system call failure. */ | |
3626 | ||
3627 | int | |
3628 | a_write (desc, addr, len, pos, annot) | |
3629 | int desc; | |
3630 | register char *addr; | |
3631 | register int len; | |
3632 | int pos; | |
3633 | Lisp_Object *annot; | |
3634 | { | |
3635 | Lisp_Object tem; | |
3636 | int nextpos; | |
3637 | int lastpos = pos + len; | |
3638 | ||
eb15aa18 | 3639 | while (NILP (*annot) || CONSP (*annot)) |
d6a3cc15 RS |
3640 | { |
3641 | tem = Fcar_safe (Fcar (*annot)); | |
3642 | if (INTEGERP (tem) && XINT (tem) >= pos && XFASTINT (tem) <= lastpos) | |
3643 | nextpos = XFASTINT (tem); | |
3644 | else | |
3645 | return e_write (desc, addr, lastpos - pos); | |
3646 | if (nextpos > pos) | |
3647 | { | |
3648 | if (0 > e_write (desc, addr, nextpos - pos)) | |
3649 | return -1; | |
3650 | addr += nextpos - pos; | |
3651 | pos = nextpos; | |
3652 | } | |
3653 | tem = Fcdr (Fcar (*annot)); | |
3654 | if (STRINGP (tem)) | |
3655 | { | |
3656 | if (0 > e_write (desc, XSTRING (tem)->data, XSTRING (tem)->size)) | |
3657 | return -1; | |
3658 | } | |
3659 | *annot = Fcdr (*annot); | |
3660 | } | |
3661 | } | |
3662 | ||
570d7624 JB |
3663 | int |
3664 | e_write (desc, addr, len) | |
3665 | int desc; | |
3666 | register char *addr; | |
3667 | register int len; | |
3668 | { | |
3669 | char buf[16 * 1024]; | |
3670 | register char *p, *end; | |
3671 | ||
3672 | if (!EQ (current_buffer->selective_display, Qt)) | |
3673 | return write (desc, addr, len) - len; | |
3674 | else | |
3675 | { | |
3676 | p = buf; | |
3677 | end = p + sizeof buf; | |
3678 | while (len--) | |
3679 | { | |
3680 | if (p == end) | |
3681 | { | |
3682 | if (write (desc, buf, sizeof buf) != sizeof buf) | |
3683 | return -1; | |
3684 | p = buf; | |
3685 | } | |
3686 | *p = *addr++; | |
3687 | if (*p++ == '\015') | |
3688 | p[-1] = '\n'; | |
3689 | } | |
3690 | if (p != buf) | |
3691 | if (write (desc, buf, p - buf) != p - buf) | |
3692 | return -1; | |
3693 | } | |
3694 | return 0; | |
3695 | } | |
3696 | ||
3697 | DEFUN ("verify-visited-file-modtime", Fverify_visited_file_modtime, | |
3698 | Sverify_visited_file_modtime, 1, 1, 0, | |
3699 | "Return t if last mod time of BUF's visited file matches what BUF records.\n\ | |
3700 | This means that the file has not been changed since it was visited or saved.") | |
3701 | (buf) | |
3702 | Lisp_Object buf; | |
3703 | { | |
3704 | struct buffer *b; | |
3705 | struct stat st; | |
32f4334d | 3706 | Lisp_Object handler; |
570d7624 JB |
3707 | |
3708 | CHECK_BUFFER (buf, 0); | |
3709 | b = XBUFFER (buf); | |
3710 | ||
93c30b5f | 3711 | if (!STRINGP (b->filename)) return Qt; |
570d7624 JB |
3712 | if (b->modtime == 0) return Qt; |
3713 | ||
32f4334d RS |
3714 | /* If the file name has special constructs in it, |
3715 | call the corresponding file handler. */ | |
49307295 KH |
3716 | handler = Ffind_file_name_handler (b->filename, |
3717 | Qverify_visited_file_modtime); | |
32f4334d | 3718 | if (!NILP (handler)) |
09121adc | 3719 | return call2 (handler, Qverify_visited_file_modtime, buf); |
32f4334d | 3720 | |
570d7624 JB |
3721 | if (stat (XSTRING (b->filename)->data, &st) < 0) |
3722 | { | |
3723 | /* If the file doesn't exist now and didn't exist before, | |
3724 | we say that it isn't modified, provided the error is a tame one. */ | |
3725 | if (errno == ENOENT || errno == EACCES || errno == ENOTDIR) | |
3726 | st.st_mtime = -1; | |
3727 | else | |
3728 | st.st_mtime = 0; | |
3729 | } | |
3730 | if (st.st_mtime == b->modtime | |
3731 | /* If both are positive, accept them if they are off by one second. */ | |
3732 | || (st.st_mtime > 0 && b->modtime > 0 | |
3733 | && (st.st_mtime == b->modtime + 1 | |
3734 | || st.st_mtime == b->modtime - 1))) | |
3735 | return Qt; | |
3736 | return Qnil; | |
3737 | } | |
3738 | ||
3739 | DEFUN ("clear-visited-file-modtime", Fclear_visited_file_modtime, | |
3740 | Sclear_visited_file_modtime, 0, 0, 0, | |
3741 | "Clear out records of last mod time of visited file.\n\ | |
3742 | Next attempt to save will certainly not complain of a discrepancy.") | |
3743 | () | |
3744 | { | |
3745 | current_buffer->modtime = 0; | |
3746 | return Qnil; | |
3747 | } | |
3748 | ||
f5d5eccf RS |
3749 | DEFUN ("visited-file-modtime", Fvisited_file_modtime, |
3750 | Svisited_file_modtime, 0, 0, 0, | |
3751 | "Return the current buffer's recorded visited file modification time.\n\ | |
3752 | The value is a list of the form (HIGH . LOW), like the time values\n\ | |
3753 | that `file-attributes' returns.") | |
3754 | () | |
3755 | { | |
b50536bb | 3756 | return long_to_cons ((unsigned long) current_buffer->modtime); |
f5d5eccf RS |
3757 | } |
3758 | ||
570d7624 | 3759 | DEFUN ("set-visited-file-modtime", Fset_visited_file_modtime, |
f5d5eccf | 3760 | Sset_visited_file_modtime, 0, 1, 0, |
570d7624 JB |
3761 | "Update buffer's recorded modification time from the visited file's time.\n\ |
3762 | Useful if the buffer was not read from the file normally\n\ | |
f5d5eccf RS |
3763 | or if the file itself has been changed for some known benign reason.\n\ |
3764 | An argument specifies the modification time value to use\n\ | |
3765 | \(instead of that of the visited file), in the form of a list\n\ | |
3766 | \(HIGH . LOW) or (HIGH LOW).") | |
3767 | (time_list) | |
3768 | Lisp_Object time_list; | |
570d7624 | 3769 | { |
f5d5eccf RS |
3770 | if (!NILP (time_list)) |
3771 | current_buffer->modtime = cons_to_long (time_list); | |
3772 | else | |
3773 | { | |
3774 | register Lisp_Object filename; | |
3775 | struct stat st; | |
3776 | Lisp_Object handler; | |
570d7624 | 3777 | |
f5d5eccf | 3778 | filename = Fexpand_file_name (current_buffer->filename, Qnil); |
32f4334d | 3779 | |
f5d5eccf RS |
3780 | /* If the file name has special constructs in it, |
3781 | call the corresponding file handler. */ | |
49307295 | 3782 | handler = Ffind_file_name_handler (filename, Qset_visited_file_modtime); |
f5d5eccf | 3783 | if (!NILP (handler)) |
caf3c431 | 3784 | /* The handler can find the file name the same way we did. */ |
76c881b0 | 3785 | return call2 (handler, Qset_visited_file_modtime, Qnil); |
f5d5eccf RS |
3786 | else if (stat (XSTRING (filename)->data, &st) >= 0) |
3787 | current_buffer->modtime = st.st_mtime; | |
3788 | } | |
570d7624 JB |
3789 | |
3790 | return Qnil; | |
3791 | } | |
3792 | \f | |
3793 | Lisp_Object | |
3794 | auto_save_error () | |
3795 | { | |
570d7624 | 3796 | ring_bell (); |
1a04498e | 3797 | message ("Autosaving...error for %s", XSTRING (current_buffer->name)->data); |
de49a6d3 | 3798 | Fsleep_for (make_number (1), Qnil); |
1a04498e | 3799 | message ("Autosaving...error!for %s", XSTRING (current_buffer->name)->data); |
de49a6d3 | 3800 | Fsleep_for (make_number (1), Qnil); |
1a04498e | 3801 | message ("Autosaving...error for %s", XSTRING (current_buffer->name)->data); |
de49a6d3 | 3802 | Fsleep_for (make_number (1), Qnil); |
570d7624 JB |
3803 | return Qnil; |
3804 | } | |
3805 | ||
3806 | Lisp_Object | |
3807 | auto_save_1 () | |
3808 | { | |
3809 | unsigned char *fn; | |
3810 | struct stat st; | |
3811 | ||
3812 | /* Get visited file's mode to become the auto save file's mode. */ | |
3813 | if (stat (XSTRING (current_buffer->filename)->data, &st) >= 0) | |
3814 | /* But make sure we can overwrite it later! */ | |
3815 | auto_save_mode_bits = st.st_mode | 0600; | |
3816 | else | |
3817 | auto_save_mode_bits = 0666; | |
3818 | ||
3819 | return | |
3820 | Fwrite_region (Qnil, Qnil, | |
3821 | current_buffer->auto_save_file_name, | |
7204a979 | 3822 | Qnil, Qlambda, Qnil); |
570d7624 JB |
3823 | } |
3824 | ||
e54d3b5d | 3825 | static Lisp_Object |
15fa1468 RS |
3826 | do_auto_save_unwind (desc) /* used as unwind-protect function */ |
3827 | Lisp_Object desc; | |
e54d3b5d | 3828 | { |
3be3c08e | 3829 | auto_saving = 0; |
15fa1468 | 3830 | close (XINT (desc)); |
e54d3b5d RS |
3831 | return Qnil; |
3832 | } | |
3833 | ||
570d7624 JB |
3834 | DEFUN ("do-auto-save", Fdo_auto_save, Sdo_auto_save, 0, 2, "", |
3835 | "Auto-save all buffers that need it.\n\ | |
3836 | This is all buffers that have auto-saving enabled\n\ | |
3837 | and are changed since last auto-saved.\n\ | |
3838 | Auto-saving writes the buffer into a file\n\ | |
3839 | so that your editing is not lost if the system crashes.\n\ | |
012d4cdc RS |
3840 | This file is not the file you visited; that changes only when you save.\n\ |
3841 | Normally we run the normal hook `auto-save-hook' before saving.\n\n\ | |
570d7624 | 3842 | Non-nil first argument means do not print any message if successful.\n\ |
4746118a | 3843 | Non-nil second argument means save only current buffer.") |
17857782 JB |
3844 | (no_message, current_only) |
3845 | Lisp_Object no_message, current_only; | |
570d7624 JB |
3846 | { |
3847 | struct buffer *old = current_buffer, *b; | |
3848 | Lisp_Object tail, buf; | |
3849 | int auto_saved = 0; | |
3850 | char *omessage = echo_area_glyphs; | |
f05b275b | 3851 | int omessage_length = echo_area_glyphs_length; |
f14b1c68 JB |
3852 | extern int minibuf_level; |
3853 | int do_handled_files; | |
ff4c9993 | 3854 | Lisp_Object oquit; |
e54d3b5d | 3855 | int listdesc; |
e54d3b5d RS |
3856 | int count = specpdl_ptr - specpdl; |
3857 | int *ptr; | |
ff4c9993 RS |
3858 | |
3859 | /* Ordinarily don't quit within this function, | |
3860 | but don't make it impossible to quit (in case we get hung in I/O). */ | |
3861 | oquit = Vquit_flag; | |
3862 | Vquit_flag = Qnil; | |
570d7624 JB |
3863 | |
3864 | /* No GCPRO needed, because (when it matters) all Lisp_Object variables | |
3865 | point to non-strings reached from Vbuffer_alist. */ | |
3866 | ||
570d7624 | 3867 | if (minibuf_level) |
17857782 | 3868 | no_message = Qt; |
570d7624 | 3869 | |
265a9e55 | 3870 | if (!NILP (Vrun_hooks)) |
570d7624 JB |
3871 | call1 (Vrun_hooks, intern ("auto-save-hook")); |
3872 | ||
e54d3b5d RS |
3873 | if (STRINGP (Vauto_save_list_file_name)) |
3874 | { | |
258fd2cb RS |
3875 | Lisp_Object listfile; |
3876 | listfile = Fexpand_file_name (Vauto_save_list_file_name, Qnil); | |
5e570b75 | 3877 | #ifdef DOS_NT |
258fd2cb | 3878 | listdesc = open (XSTRING (listfile)->data, |
e54d3b5d RS |
3879 | O_WRONLY | O_TRUNC | O_CREAT | O_TEXT, |
3880 | S_IREAD | S_IWRITE); | |
5e570b75 | 3881 | #else /* not DOS_NT */ |
258fd2cb | 3882 | listdesc = creat (XSTRING (listfile)->data, 0666); |
5e570b75 | 3883 | #endif /* not DOS_NT */ |
e54d3b5d RS |
3884 | } |
3885 | else | |
3886 | listdesc = -1; | |
e54d3b5d | 3887 | |
3be3c08e RS |
3888 | /* Arrange to close that file whether or not we get an error. |
3889 | Also reset auto_saving to 0. */ | |
15fa1468 RS |
3890 | if (listdesc >= 0) |
3891 | record_unwind_protect (do_auto_save_unwind, make_number (listdesc)); | |
e54d3b5d | 3892 | |
3be3c08e RS |
3893 | auto_saving = 1; |
3894 | ||
f14b1c68 JB |
3895 | /* First, save all files which don't have handlers. If Emacs is |
3896 | crashing, the handlers may tweak what is causing Emacs to crash | |
3897 | in the first place, and it would be a shame if Emacs failed to | |
3898 | autosave perfectly ordinary files because it couldn't handle some | |
3899 | ange-ftp'd file. */ | |
3900 | for (do_handled_files = 0; do_handled_files < 2; do_handled_files++) | |
41d86b13 | 3901 | for (tail = Vbuffer_alist; GC_CONSP (tail); tail = XCONS (tail)->cdr) |
f14b1c68 JB |
3902 | { |
3903 | buf = XCONS (XCONS (tail)->car)->cdr; | |
3904 | b = XBUFFER (buf); | |
e54d3b5d RS |
3905 | |
3906 | /* Record all the buffers that have auto save mode | |
258fd2cb RS |
3907 | in the special file that lists them. For each of these buffers, |
3908 | Record visited name (if any) and auto save name. */ | |
93c30b5f | 3909 | if (STRINGP (b->auto_save_file_name) |
e54d3b5d RS |
3910 | && listdesc >= 0 && do_handled_files == 0) |
3911 | { | |
258fd2cb RS |
3912 | if (!NILP (b->filename)) |
3913 | { | |
3914 | write (listdesc, XSTRING (b->filename)->data, | |
3915 | XSTRING (b->filename)->size); | |
3916 | } | |
3917 | write (listdesc, "\n", 1); | |
e54d3b5d RS |
3918 | write (listdesc, XSTRING (b->auto_save_file_name)->data, |
3919 | XSTRING (b->auto_save_file_name)->size); | |
3920 | write (listdesc, "\n", 1); | |
3921 | } | |
17857782 | 3922 | |
f14b1c68 JB |
3923 | if (!NILP (current_only) |
3924 | && b != current_buffer) | |
3925 | continue; | |
e54d3b5d | 3926 | |
95385625 RS |
3927 | /* Don't auto-save indirect buffers. |
3928 | The base buffer takes care of it. */ | |
3929 | if (b->base_buffer) | |
3930 | continue; | |
3931 | ||
f14b1c68 JB |
3932 | /* Check for auto save enabled |
3933 | and file changed since last auto save | |
3934 | and file changed since last real save. */ | |
93c30b5f | 3935 | if (STRINGP (b->auto_save_file_name) |
95385625 | 3936 | && BUF_SAVE_MODIFF (b) < BUF_MODIFF (b) |
f14b1c68 | 3937 | && b->auto_save_modified < BUF_MODIFF (b) |
82c2d839 RS |
3938 | /* -1 means we've turned off autosaving for a while--see below. */ |
3939 | && XINT (b->save_length) >= 0 | |
f14b1c68 | 3940 | && (do_handled_files |
49307295 KH |
3941 | || NILP (Ffind_file_name_handler (b->auto_save_file_name, |
3942 | Qwrite_region)))) | |
f14b1c68 | 3943 | { |
b60247d9 RS |
3944 | EMACS_TIME before_time, after_time; |
3945 | ||
3946 | EMACS_GET_TIME (before_time); | |
3947 | ||
3948 | /* If we had a failure, don't try again for 20 minutes. */ | |
3949 | if (b->auto_save_failure_time >= 0 | |
3950 | && EMACS_SECS (before_time) - b->auto_save_failure_time < 1200) | |
3951 | continue; | |
3952 | ||
f14b1c68 JB |
3953 | if ((XFASTINT (b->save_length) * 10 |
3954 | > (BUF_Z (b) - BUF_BEG (b)) * 13) | |
3955 | /* A short file is likely to change a large fraction; | |
3956 | spare the user annoying messages. */ | |
3957 | && XFASTINT (b->save_length) > 5000 | |
3958 | /* These messages are frequent and annoying for `*mail*'. */ | |
3959 | && !EQ (b->filename, Qnil) | |
3960 | && NILP (no_message)) | |
3961 | { | |
3962 | /* It has shrunk too much; turn off auto-saving here. */ | |
3963 | message ("Buffer %s has shrunk a lot; auto save turned off there", | |
3964 | XSTRING (b->name)->data); | |
82c2d839 RS |
3965 | /* Turn off auto-saving until there's a real save, |
3966 | and prevent any more warnings. */ | |
46283abe | 3967 | XSETINT (b->save_length, -1); |
f14b1c68 JB |
3968 | Fsleep_for (make_number (1), Qnil); |
3969 | continue; | |
3970 | } | |
3971 | set_buffer_internal (b); | |
3972 | if (!auto_saved && NILP (no_message)) | |
3973 | message1 ("Auto-saving..."); | |
3974 | internal_condition_case (auto_save_1, Qt, auto_save_error); | |
3975 | auto_saved++; | |
3976 | b->auto_save_modified = BUF_MODIFF (b); | |
2acfd7ae | 3977 | XSETFASTINT (current_buffer->save_length, Z - BEG); |
f14b1c68 | 3978 | set_buffer_internal (old); |
b60247d9 RS |
3979 | |
3980 | EMACS_GET_TIME (after_time); | |
3981 | ||
3982 | /* If auto-save took more than 60 seconds, | |
3983 | assume it was an NFS failure that got a timeout. */ | |
3984 | if (EMACS_SECS (after_time) - EMACS_SECS (before_time) > 60) | |
3985 | b->auto_save_failure_time = EMACS_SECS (after_time); | |
f14b1c68 JB |
3986 | } |
3987 | } | |
570d7624 | 3988 | |
b67f2ca5 RS |
3989 | /* Prevent another auto save till enough input events come in. */ |
3990 | record_auto_save (); | |
570d7624 | 3991 | |
17857782 | 3992 | if (auto_saved && NILP (no_message)) |
f05b275b KH |
3993 | { |
3994 | if (omessage) | |
3995 | message2 (omessage, omessage_length); | |
3996 | else | |
3997 | message1 ("Auto-saving...done"); | |
3998 | } | |
570d7624 | 3999 | |
ff4c9993 RS |
4000 | Vquit_flag = oquit; |
4001 | ||
e54d3b5d | 4002 | unbind_to (count, Qnil); |
570d7624 JB |
4003 | return Qnil; |
4004 | } | |
4005 | ||
4006 | DEFUN ("set-buffer-auto-saved", Fset_buffer_auto_saved, | |
4007 | Sset_buffer_auto_saved, 0, 0, 0, | |
4008 | "Mark current buffer as auto-saved with its current text.\n\ | |
4009 | No auto-save file will be written until the buffer changes again.") | |
4010 | () | |
4011 | { | |
4012 | current_buffer->auto_save_modified = MODIFF; | |
2acfd7ae | 4013 | XSETFASTINT (current_buffer->save_length, Z - BEG); |
b60247d9 RS |
4014 | current_buffer->auto_save_failure_time = -1; |
4015 | return Qnil; | |
4016 | } | |
4017 | ||
4018 | DEFUN ("clear-buffer-auto-save-failure", Fclear_buffer_auto_save_failure, | |
4019 | Sclear_buffer_auto_save_failure, 0, 0, 0, | |
4020 | "Clear any record of a recent auto-save failure in the current buffer.") | |
4021 | () | |
4022 | { | |
4023 | current_buffer->auto_save_failure_time = -1; | |
570d7624 JB |
4024 | return Qnil; |
4025 | } | |
4026 | ||
4027 | DEFUN ("recent-auto-save-p", Frecent_auto_save_p, Srecent_auto_save_p, | |
4028 | 0, 0, 0, | |
4029 | "Return t if buffer has been auto-saved since last read in or saved.") | |
4030 | () | |
4031 | { | |
95385625 | 4032 | return (SAVE_MODIFF < current_buffer->auto_save_modified) ? Qt : Qnil; |
570d7624 JB |
4033 | } |
4034 | \f | |
4035 | /* Reading and completing file names */ | |
4036 | extern Lisp_Object Ffile_name_completion (), Ffile_name_all_completions (); | |
4037 | ||
6e710ae5 RS |
4038 | /* In the string VAL, change each $ to $$ and return the result. */ |
4039 | ||
4040 | static Lisp_Object | |
4041 | double_dollars (val) | |
4042 | Lisp_Object val; | |
4043 | { | |
4044 | register unsigned char *old, *new; | |
4045 | register int n; | |
4046 | int osize, count; | |
4047 | ||
4048 | osize = XSTRING (val)->size; | |
4049 | /* Quote "$" as "$$" to get it past substitute-in-file-name */ | |
4050 | for (n = osize, count = 0, old = XSTRING (val)->data; n > 0; n--) | |
4051 | if (*old++ == '$') count++; | |
4052 | if (count > 0) | |
4053 | { | |
4054 | old = XSTRING (val)->data; | |
4055 | val = Fmake_string (make_number (osize + count), make_number (0)); | |
4056 | new = XSTRING (val)->data; | |
4057 | for (n = osize; n > 0; n--) | |
4058 | if (*old != '$') | |
4059 | *new++ = *old++; | |
4060 | else | |
4061 | { | |
4062 | *new++ = '$'; | |
4063 | *new++ = '$'; | |
4064 | old++; | |
4065 | } | |
4066 | } | |
4067 | return val; | |
4068 | } | |
4069 | ||
570d7624 JB |
4070 | DEFUN ("read-file-name-internal", Fread_file_name_internal, Sread_file_name_internal, |
4071 | 3, 3, 0, | |
4072 | "Internal subroutine for read-file-name. Do not call this.") | |
4073 | (string, dir, action) | |
4074 | Lisp_Object string, dir, action; | |
4075 | /* action is nil for complete, t for return list of completions, | |
4076 | lambda for verify final value */ | |
4077 | { | |
4078 | Lisp_Object name, specdir, realdir, val, orig_string; | |
09121adc | 4079 | int changed; |
8ce069f5 | 4080 | struct gcpro gcpro1, gcpro2, gcpro3, gcpro4, gcpro5; |
09121adc RS |
4081 | |
4082 | realdir = dir; | |
4083 | name = string; | |
4084 | orig_string = Qnil; | |
4085 | specdir = Qnil; | |
4086 | changed = 0; | |
4087 | /* No need to protect ACTION--we only compare it with t and nil. */ | |
8ce069f5 | 4088 | GCPRO5 (string, realdir, name, specdir, orig_string); |
570d7624 JB |
4089 | |
4090 | if (XSTRING (string)->size == 0) | |
4091 | { | |
570d7624 | 4092 | if (EQ (action, Qlambda)) |
09121adc RS |
4093 | { |
4094 | UNGCPRO; | |
4095 | return Qnil; | |
4096 | } | |
570d7624 JB |
4097 | } |
4098 | else | |
4099 | { | |
4100 | orig_string = string; | |
4101 | string = Fsubstitute_in_file_name (string); | |
09121adc | 4102 | changed = NILP (Fstring_equal (string, orig_string)); |
570d7624 | 4103 | name = Ffile_name_nondirectory (string); |
09121adc RS |
4104 | val = Ffile_name_directory (string); |
4105 | if (! NILP (val)) | |
4106 | realdir = Fexpand_file_name (val, realdir); | |
570d7624 JB |
4107 | } |
4108 | ||
265a9e55 | 4109 | if (NILP (action)) |
570d7624 JB |
4110 | { |
4111 | specdir = Ffile_name_directory (string); | |
4112 | val = Ffile_name_completion (name, realdir); | |
09121adc | 4113 | UNGCPRO; |
93c30b5f | 4114 | if (!STRINGP (val)) |
570d7624 | 4115 | { |
09121adc | 4116 | if (changed) |
dbd04e01 | 4117 | return double_dollars (string); |
09121adc | 4118 | return val; |
570d7624 JB |
4119 | } |
4120 | ||
265a9e55 | 4121 | if (!NILP (specdir)) |
570d7624 JB |
4122 | val = concat2 (specdir, val); |
4123 | #ifndef VMS | |
6e710ae5 RS |
4124 | return double_dollars (val); |
4125 | #else /* not VMS */ | |
09121adc | 4126 | return val; |
6e710ae5 | 4127 | #endif /* not VMS */ |
570d7624 | 4128 | } |
09121adc | 4129 | UNGCPRO; |
570d7624 JB |
4130 | |
4131 | if (EQ (action, Qt)) | |
4132 | return Ffile_name_all_completions (name, realdir); | |
4133 | /* Only other case actually used is ACTION = lambda */ | |
4134 | #ifdef VMS | |
4135 | /* Supposedly this helps commands such as `cd' that read directory names, | |
4136 | but can someone explain how it helps them? -- RMS */ | |
4137 | if (XSTRING (name)->size == 0) | |
4138 | return Qt; | |
4139 | #endif /* VMS */ | |
4140 | return Ffile_exists_p (string); | |
4141 | } | |
4142 | ||
4143 | DEFUN ("read-file-name", Fread_file_name, Sread_file_name, 1, 5, 0, | |
4144 | "Read file name, prompting with PROMPT and completing in directory DIR.\n\ | |
4145 | Value is not expanded---you must call `expand-file-name' yourself.\n\ | |
4146 | Default name to DEFAULT if user enters a null string.\n\ | |
3beeedfe RS |
4147 | (If DEFAULT is omitted, the visited file name is used,\n\ |
4148 | except that if INITIAL is specified, that combined with DIR is used.)\n\ | |
570d7624 JB |
4149 | Fourth arg MUSTMATCH non-nil means require existing file's name.\n\ |
4150 | Non-nil and non-t means also require confirmation after completion.\n\ | |
4151 | Fifth arg INITIAL specifies text to start with.\n\ | |
4152 | DIR defaults to current buffer's directory default.") | |
4153 | (prompt, dir, defalt, mustmatch, initial) | |
4154 | Lisp_Object prompt, dir, defalt, mustmatch, initial; | |
4155 | { | |
85b5fe07 | 4156 | Lisp_Object val, insdef, insdef1, tem; |
570d7624 JB |
4157 | struct gcpro gcpro1, gcpro2; |
4158 | register char *homedir; | |
4159 | int count; | |
4160 | ||
265a9e55 | 4161 | if (NILP (dir)) |
570d7624 | 4162 | dir = current_buffer->directory; |
265a9e55 | 4163 | if (NILP (defalt)) |
3beeedfe RS |
4164 | { |
4165 | if (! NILP (initial)) | |
4166 | defalt = Fexpand_file_name (initial, dir); | |
4167 | else | |
4168 | defalt = current_buffer->filename; | |
4169 | } | |
570d7624 JB |
4170 | |
4171 | /* If dir starts with user's homedir, change that to ~. */ | |
4172 | homedir = (char *) egetenv ("HOME"); | |
4173 | if (homedir != 0 | |
93c30b5f | 4174 | && STRINGP (dir) |
570d7624 | 4175 | && !strncmp (homedir, XSTRING (dir)->data, strlen (homedir)) |
5e570b75 | 4176 | && IS_DIRECTORY_SEP (XSTRING (dir)->data[strlen (homedir)])) |
570d7624 JB |
4177 | { |
4178 | dir = make_string (XSTRING (dir)->data + strlen (homedir) - 1, | |
4179 | XSTRING (dir)->size - strlen (homedir) + 1); | |
4180 | XSTRING (dir)->data[0] = '~'; | |
4181 | } | |
4182 | ||
4183 | if (insert_default_directory) | |
4184 | { | |
4185 | insdef = dir; | |
265a9e55 | 4186 | if (!NILP (initial)) |
570d7624 | 4187 | { |
15c65264 | 4188 | Lisp_Object args[2], pos; |
570d7624 JB |
4189 | |
4190 | args[0] = insdef; | |
4191 | args[1] = initial; | |
4192 | insdef = Fconcat (2, args); | |
351bd676 | 4193 | pos = make_number (XSTRING (double_dollars (dir))->size); |
6e710ae5 | 4194 | insdef1 = Fcons (double_dollars (insdef), pos); |
570d7624 | 4195 | } |
6e710ae5 RS |
4196 | else |
4197 | insdef1 = double_dollars (insdef); | |
570d7624 | 4198 | } |
351bd676 KH |
4199 | else if (!NILP (initial)) |
4200 | { | |
4201 | insdef = initial; | |
4202 | insdef1 = Fcons (double_dollars (insdef), 0); | |
4203 | } | |
570d7624 | 4204 | else |
85b5fe07 | 4205 | insdef = Qnil, insdef1 = Qnil; |
570d7624 JB |
4206 | |
4207 | #ifdef VMS | |
4208 | count = specpdl_ptr - specpdl; | |
4209 | specbind (intern ("completion-ignore-case"), Qt); | |
4210 | #endif | |
4211 | ||
4212 | GCPRO2 (insdef, defalt); | |
4213 | val = Fcompleting_read (prompt, intern ("read-file-name-internal"), | |
85b5fe07 | 4214 | dir, mustmatch, insdef1, |
15c65264 | 4215 | Qfile_name_history); |
570d7624 JB |
4216 | |
4217 | #ifdef VMS | |
4218 | unbind_to (count, Qnil); | |
4219 | #endif | |
4220 | ||
4221 | UNGCPRO; | |
265a9e55 | 4222 | if (NILP (val)) |
570d7624 JB |
4223 | error ("No file name specified"); |
4224 | tem = Fstring_equal (val, insdef); | |
265a9e55 | 4225 | if (!NILP (tem) && !NILP (defalt)) |
570d7624 | 4226 | return defalt; |
b320926a | 4227 | if (XSTRING (val)->size == 0 && NILP (insdef)) |
d9bc1c99 RS |
4228 | { |
4229 | if (!NILP (defalt)) | |
4230 | return defalt; | |
4231 | else | |
4232 | error ("No default file name"); | |
4233 | } | |
570d7624 JB |
4234 | return Fsubstitute_in_file_name (val); |
4235 | } | |
4236 | ||
5e570b75 | 4237 | #if 0 /* Old version */ |
570d7624 | 4238 | DEFUN ("read-file-name", Fread_file_name, Sread_file_name, 1, 5, 0, |
0de25302 KH |
4239 | /* Don't confuse make-docfile by having two doc strings for this function. |
4240 | make-docfile does not pay attention to #if, for good reason! */ | |
4241 | 0) | |
570d7624 JB |
4242 | (prompt, dir, defalt, mustmatch, initial) |
4243 | Lisp_Object prompt, dir, defalt, mustmatch, initial; | |
4244 | { | |
4245 | Lisp_Object val, insdef, tem; | |
4246 | struct gcpro gcpro1, gcpro2; | |
4247 | register char *homedir; | |
4248 | int count; | |
4249 | ||
265a9e55 | 4250 | if (NILP (dir)) |
570d7624 | 4251 | dir = current_buffer->directory; |
265a9e55 | 4252 | if (NILP (defalt)) |
570d7624 JB |
4253 | defalt = current_buffer->filename; |
4254 | ||
4255 | /* If dir starts with user's homedir, change that to ~. */ | |
4256 | homedir = (char *) egetenv ("HOME"); | |
4257 | if (homedir != 0 | |
93c30b5f | 4258 | && STRINGP (dir) |
570d7624 JB |
4259 | && !strncmp (homedir, XSTRING (dir)->data, strlen (homedir)) |
4260 | && XSTRING (dir)->data[strlen (homedir)] == '/') | |
4261 | { | |
4262 | dir = make_string (XSTRING (dir)->data + strlen (homedir) - 1, | |
4263 | XSTRING (dir)->size - strlen (homedir) + 1); | |
4264 | XSTRING (dir)->data[0] = '~'; | |
4265 | } | |
4266 | ||
265a9e55 | 4267 | if (!NILP (initial)) |
570d7624 JB |
4268 | insdef = initial; |
4269 | else if (insert_default_directory) | |
4270 | insdef = dir; | |
4271 | else | |
4272 | insdef = build_string (""); | |
4273 | ||
4274 | #ifdef VMS | |
4275 | count = specpdl_ptr - specpdl; | |
4276 | specbind (intern ("completion-ignore-case"), Qt); | |
4277 | #endif | |
4278 | ||
4279 | GCPRO2 (insdef, defalt); | |
4280 | val = Fcompleting_read (prompt, intern ("read-file-name-internal"), | |
4281 | dir, mustmatch, | |
15c65264 RS |
4282 | insert_default_directory ? insdef : Qnil, |
4283 | Qfile_name_history); | |
570d7624 JB |
4284 | |
4285 | #ifdef VMS | |
4286 | unbind_to (count, Qnil); | |
4287 | #endif | |
4288 | ||
4289 | UNGCPRO; | |
265a9e55 | 4290 | if (NILP (val)) |
570d7624 JB |
4291 | error ("No file name specified"); |
4292 | tem = Fstring_equal (val, insdef); | |
265a9e55 | 4293 | if (!NILP (tem) && !NILP (defalt)) |
570d7624 JB |
4294 | return defalt; |
4295 | return Fsubstitute_in_file_name (val); | |
4296 | } | |
4297 | #endif /* Old version */ | |
4298 | \f | |
4299 | syms_of_fileio () | |
4300 | { | |
0bf2eed2 | 4301 | Qexpand_file_name = intern ("expand-file-name"); |
273e0829 | 4302 | Qsubstitute_in_file_name = intern ("substitute-in-file-name"); |
0bf2eed2 RS |
4303 | Qdirectory_file_name = intern ("directory-file-name"); |
4304 | Qfile_name_directory = intern ("file-name-directory"); | |
4305 | Qfile_name_nondirectory = intern ("file-name-nondirectory"); | |
642ef245 | 4306 | Qunhandled_file_name_directory = intern ("unhandled-file-name-directory"); |
0bf2eed2 | 4307 | Qfile_name_as_directory = intern ("file-name-as-directory"); |
32f4334d | 4308 | Qcopy_file = intern ("copy-file"); |
a6e6e718 | 4309 | Qmake_directory_internal = intern ("make-directory-internal"); |
32f4334d RS |
4310 | Qdelete_directory = intern ("delete-directory"); |
4311 | Qdelete_file = intern ("delete-file"); | |
4312 | Qrename_file = intern ("rename-file"); | |
4313 | Qadd_name_to_file = intern ("add-name-to-file"); | |
4314 | Qmake_symbolic_link = intern ("make-symbolic-link"); | |
4315 | Qfile_exists_p = intern ("file-exists-p"); | |
4316 | Qfile_executable_p = intern ("file-executable-p"); | |
4317 | Qfile_readable_p = intern ("file-readable-p"); | |
4318 | Qfile_symlink_p = intern ("file-symlink-p"); | |
4319 | Qfile_writable_p = intern ("file-writable-p"); | |
4320 | Qfile_directory_p = intern ("file-directory-p"); | |
adedc71d | 4321 | Qfile_regular_p = intern ("file-regular-p"); |
32f4334d RS |
4322 | Qfile_accessible_directory_p = intern ("file-accessible-directory-p"); |
4323 | Qfile_modes = intern ("file-modes"); | |
4324 | Qset_file_modes = intern ("set-file-modes"); | |
4325 | Qfile_newer_than_file_p = intern ("file-newer-than-file-p"); | |
4326 | Qinsert_file_contents = intern ("insert-file-contents"); | |
4327 | Qwrite_region = intern ("write-region"); | |
4328 | Qverify_visited_file_modtime = intern ("verify-visited-file-modtime"); | |
3ec46acd | 4329 | Qset_visited_file_modtime = intern ("set-visited-file-modtime"); |
32f4334d | 4330 | |
642ef245 | 4331 | staticpro (&Qexpand_file_name); |
273e0829 | 4332 | staticpro (&Qsubstitute_in_file_name); |
642ef245 JB |
4333 | staticpro (&Qdirectory_file_name); |
4334 | staticpro (&Qfile_name_directory); | |
4335 | staticpro (&Qfile_name_nondirectory); | |
4336 | staticpro (&Qunhandled_file_name_directory); | |
4337 | staticpro (&Qfile_name_as_directory); | |
15c65264 | 4338 | staticpro (&Qcopy_file); |
c34b559d | 4339 | staticpro (&Qmake_directory_internal); |
15c65264 RS |
4340 | staticpro (&Qdelete_directory); |
4341 | staticpro (&Qdelete_file); | |
4342 | staticpro (&Qrename_file); | |
4343 | staticpro (&Qadd_name_to_file); | |
4344 | staticpro (&Qmake_symbolic_link); | |
4345 | staticpro (&Qfile_exists_p); | |
4346 | staticpro (&Qfile_executable_p); | |
4347 | staticpro (&Qfile_readable_p); | |
4348 | staticpro (&Qfile_symlink_p); | |
4349 | staticpro (&Qfile_writable_p); | |
4350 | staticpro (&Qfile_directory_p); | |
adedc71d | 4351 | staticpro (&Qfile_regular_p); |
15c65264 RS |
4352 | staticpro (&Qfile_accessible_directory_p); |
4353 | staticpro (&Qfile_modes); | |
4354 | staticpro (&Qset_file_modes); | |
4355 | staticpro (&Qfile_newer_than_file_p); | |
4356 | staticpro (&Qinsert_file_contents); | |
4357 | staticpro (&Qwrite_region); | |
4358 | staticpro (&Qverify_visited_file_modtime); | |
642ef245 JB |
4359 | |
4360 | Qfile_name_history = intern ("file-name-history"); | |
4361 | Fset (Qfile_name_history, Qnil); | |
15c65264 RS |
4362 | staticpro (&Qfile_name_history); |
4363 | ||
570d7624 JB |
4364 | Qfile_error = intern ("file-error"); |
4365 | staticpro (&Qfile_error); | |
4366 | Qfile_already_exists = intern("file-already-exists"); | |
4367 | staticpro (&Qfile_already_exists); | |
4368 | ||
5e570b75 | 4369 | #ifdef DOS_NT |
4c3c22f3 RS |
4370 | Qfind_buffer_file_type = intern ("find-buffer-file-type"); |
4371 | staticpro (&Qfind_buffer_file_type); | |
5e570b75 | 4372 | #endif /* DOS_NT */ |
4c3c22f3 | 4373 | |
0d420e88 | 4374 | DEFVAR_LISP ("auto-save-file-format", &Vauto_save_file_format, |
824a483f | 4375 | "*Format in which to write auto-save files.\n\ |
0d420e88 BG |
4376 | Should be a list of symbols naming formats that are defined in `format-alist'.\n\ |
4377 | If it is t, which is the default, auto-save files are written in the\n\ | |
4378 | same format as a regular save would use."); | |
4379 | Vauto_save_file_format = Qt; | |
4380 | ||
4381 | Qformat_decode = intern ("format-decode"); | |
4382 | staticpro (&Qformat_decode); | |
4383 | Qformat_annotate_function = intern ("format-annotate-function"); | |
4384 | staticpro (&Qformat_annotate_function); | |
4385 | ||
d6a3cc15 RS |
4386 | Qcar_less_than_car = intern ("car-less-than-car"); |
4387 | staticpro (&Qcar_less_than_car); | |
4388 | ||
570d7624 JB |
4389 | Fput (Qfile_error, Qerror_conditions, |
4390 | Fcons (Qfile_error, Fcons (Qerror, Qnil))); | |
4391 | Fput (Qfile_error, Qerror_message, | |
4392 | build_string ("File error")); | |
4393 | ||
4394 | Fput (Qfile_already_exists, Qerror_conditions, | |
4395 | Fcons (Qfile_already_exists, | |
4396 | Fcons (Qfile_error, Fcons (Qerror, Qnil)))); | |
4397 | Fput (Qfile_already_exists, Qerror_message, | |
4398 | build_string ("File already exists")); | |
4399 | ||
4400 | DEFVAR_BOOL ("insert-default-directory", &insert_default_directory, | |
4401 | "*Non-nil means when reading a filename start with default dir in minibuffer."); | |
4402 | insert_default_directory = 1; | |
4403 | ||
4404 | DEFVAR_BOOL ("vms-stmlf-recfm", &vms_stmlf_recfm, | |
4405 | "*Non-nil means write new files with record format `stmlf'.\n\ | |
4406 | nil means use format `var'. This variable is meaningful only on VMS."); | |
4407 | vms_stmlf_recfm = 0; | |
4408 | ||
1d1826db RS |
4409 | DEFVAR_LISP ("file-name-handler-alist", &Vfile_name_handler_alist, |
4410 | "*Alist of elements (REGEXP . HANDLER) for file names handled specially.\n\ | |
4411 | If a file name matches REGEXP, then all I/O on that file is done by calling\n\ | |
4412 | HANDLER.\n\ | |
4413 | \n\ | |
4414 | The first argument given to HANDLER is the name of the I/O primitive\n\ | |
4415 | to be handled; the remaining arguments are the arguments that were\n\ | |
4416 | passed to that primitive. For example, if you do\n\ | |
4417 | (file-exists-p FILENAME)\n\ | |
4418 | and FILENAME is handled by HANDLER, then HANDLER is called like this:\n\ | |
642ef245 JB |
4419 | (funcall HANDLER 'file-exists-p FILENAME)\n\ |
4420 | The function `find-file-name-handler' checks this list for a handler\n\ | |
4421 | for its argument."); | |
09121adc RS |
4422 | Vfile_name_handler_alist = Qnil; |
4423 | ||
d6a3cc15 | 4424 | DEFVAR_LISP ("after-insert-file-functions", &Vafter_insert_file_functions, |
246cfea5 RS |
4425 | "A list of functions to be called at the end of `insert-file-contents'.\n\ |
4426 | Each is passed one argument, the number of bytes inserted. It should return\n\ | |
4427 | the new byte count, and leave point the same. If `insert-file-contents' is\n\ | |
4428 | intercepted by a handler from `file-name-handler-alist', that handler is\n\ | |
d6a3cc15 RS |
4429 | responsible for calling the after-insert-file-functions if appropriate."); |
4430 | Vafter_insert_file_functions = Qnil; | |
4431 | ||
4432 | DEFVAR_LISP ("write-region-annotate-functions", &Vwrite_region_annotate_functions, | |
246cfea5 RS |
4433 | "A list of functions to be called at the start of `write-region'.\n\ |
4434 | Each is passed two arguments, START and END as for `write-region'. It should\n\ | |
4435 | return a list of pairs (POSITION . STRING) of strings to be effectively\n\ | |
4436 | inserted at the specified positions of the file being written (1 means to\n\ | |
4437 | insert before the first byte written). The POSITIONs must be sorted into\n\ | |
4438 | increasing order. If there are several functions in the list, the several\n\ | |
d6a3cc15 RS |
4439 | lists are merged destructively."); |
4440 | Vwrite_region_annotate_functions = Qnil; | |
4441 | ||
6fc6f94b RS |
4442 | DEFVAR_LISP ("write-region-annotations-so-far", |
4443 | &Vwrite_region_annotations_so_far, | |
4444 | "When an annotation function is called, this holds the previous annotations.\n\ | |
4445 | These are the annotations made by other annotation functions\n\ | |
4446 | that were already called. See also `write-region-annotate-functions'."); | |
4447 | Vwrite_region_annotations_so_far = Qnil; | |
4448 | ||
82c2d839 | 4449 | DEFVAR_LISP ("inhibit-file-name-handlers", &Vinhibit_file_name_handlers, |
268466ed | 4450 | "A list of file name handlers that temporarily should not be used.\n\ |
e3e86241 | 4451 | This applies only to the operation `inhibit-file-name-operation'."); |
82c2d839 RS |
4452 | Vinhibit_file_name_handlers = Qnil; |
4453 | ||
a65970a0 RS |
4454 | DEFVAR_LISP ("inhibit-file-name-operation", &Vinhibit_file_name_operation, |
4455 | "The operation for which `inhibit-file-name-handlers' is applicable."); | |
4456 | Vinhibit_file_name_operation = Qnil; | |
4457 | ||
e54d3b5d | 4458 | DEFVAR_LISP ("auto-save-list-file-name", &Vauto_save_list_file_name, |
51931aca KH |
4459 | "File name in which we write a list of all auto save file names.\n\ |
4460 | This variable is initialized automatically from `auto-save-list-file-prefix'\n\ | |
4461 | shortly after Emacs reads your `.emacs' file, if you have not yet given it\n\ | |
4462 | a non-nil value."); | |
e54d3b5d RS |
4463 | Vauto_save_list_file_name = Qnil; |
4464 | ||
642ef245 | 4465 | defsubr (&Sfind_file_name_handler); |
570d7624 JB |
4466 | defsubr (&Sfile_name_directory); |
4467 | defsubr (&Sfile_name_nondirectory); | |
642ef245 | 4468 | defsubr (&Sunhandled_file_name_directory); |
570d7624 JB |
4469 | defsubr (&Sfile_name_as_directory); |
4470 | defsubr (&Sdirectory_file_name); | |
4471 | defsubr (&Smake_temp_name); | |
4472 | defsubr (&Sexpand_file_name); | |
4473 | defsubr (&Ssubstitute_in_file_name); | |
4474 | defsubr (&Scopy_file); | |
9bbe01fb | 4475 | defsubr (&Smake_directory_internal); |
aa734e17 | 4476 | defsubr (&Sdelete_directory); |
570d7624 JB |
4477 | defsubr (&Sdelete_file); |
4478 | defsubr (&Srename_file); | |
4479 | defsubr (&Sadd_name_to_file); | |
4480 | #ifdef S_IFLNK | |
4481 | defsubr (&Smake_symbolic_link); | |
4482 | #endif /* S_IFLNK */ | |
4483 | #ifdef VMS | |
4484 | defsubr (&Sdefine_logical_name); | |
4485 | #endif /* VMS */ | |
4486 | #ifdef HPUX_NET | |
4487 | defsubr (&Ssysnetunam); | |
4488 | #endif /* HPUX_NET */ | |
4489 | defsubr (&Sfile_name_absolute_p); | |
4490 | defsubr (&Sfile_exists_p); | |
4491 | defsubr (&Sfile_executable_p); | |
4492 | defsubr (&Sfile_readable_p); | |
4493 | defsubr (&Sfile_writable_p); | |
4494 | defsubr (&Sfile_symlink_p); | |
4495 | defsubr (&Sfile_directory_p); | |
b72dea2a | 4496 | defsubr (&Sfile_accessible_directory_p); |
f793dc6c | 4497 | defsubr (&Sfile_regular_p); |
570d7624 JB |
4498 | defsubr (&Sfile_modes); |
4499 | defsubr (&Sset_file_modes); | |
c24e9a53 RS |
4500 | defsubr (&Sset_default_file_modes); |
4501 | defsubr (&Sdefault_file_modes); | |
570d7624 JB |
4502 | defsubr (&Sfile_newer_than_file_p); |
4503 | defsubr (&Sinsert_file_contents); | |
4504 | defsubr (&Swrite_region); | |
d6a3cc15 | 4505 | defsubr (&Scar_less_than_car); |
570d7624 JB |
4506 | defsubr (&Sverify_visited_file_modtime); |
4507 | defsubr (&Sclear_visited_file_modtime); | |
f5d5eccf | 4508 | defsubr (&Svisited_file_modtime); |
570d7624 JB |
4509 | defsubr (&Sset_visited_file_modtime); |
4510 | defsubr (&Sdo_auto_save); | |
4511 | defsubr (&Sset_buffer_auto_saved); | |
b60247d9 | 4512 | defsubr (&Sclear_buffer_auto_save_failure); |
570d7624 JB |
4513 | defsubr (&Srecent_auto_save_p); |
4514 | ||
4515 | defsubr (&Sread_file_name_internal); | |
4516 | defsubr (&Sread_file_name); | |
85ffea93 | 4517 | |
483a2e10 | 4518 | #ifdef unix |
85ffea93 | 4519 | defsubr (&Sunix_sync); |
483a2e10 | 4520 | #endif |
570d7624 | 4521 | } |