Commit | Line | Data |
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570d7624 | 1 | /* File IO for GNU Emacs. |
199607e4 | 2 | Copyright (C) 1985,86,87,88,93,94,95,96 Free Software Foundation, Inc. |
570d7624 JB |
3 | |
4 | This file is part of GNU Emacs. | |
5 | ||
6 | GNU Emacs is free software; you can redistribute it and/or modify | |
7 | it under the terms of the GNU General Public License as published by | |
4746118a | 8 | the Free Software Foundation; either version 2, or (at your option) |
570d7624 JB |
9 | any later version. |
10 | ||
11 | GNU Emacs is distributed in the hope that it will be useful, | |
12 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
13 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
14 | GNU General Public License for more details. | |
15 | ||
16 | You should have received a copy of the GNU General Public License | |
17 | along with GNU Emacs; see the file COPYING. If not, write to | |
3b7ad313 EN |
18 | the Free Software Foundation, Inc., 59 Temple Place - Suite 330, |
19 | Boston, MA 02111-1307, USA. */ | |
570d7624 | 20 | |
18160b98 | 21 | #include <config.h> |
570d7624 JB |
22 | |
23 | #include <sys/types.h> | |
24 | #include <sys/stat.h> | |
bfb61299 | 25 | |
29beb080 RS |
26 | #ifdef HAVE_UNISTD_H |
27 | #include <unistd.h> | |
28 | #endif | |
29 | ||
f73b0ada BF |
30 | #if !defined (S_ISLNK) && defined (S_IFLNK) |
31 | # define S_ISLNK(m) (((m) & S_IFMT) == S_IFLNK) | |
32 | #endif | |
33 | ||
34 | #if !defined (S_ISREG) && defined (S_IFREG) | |
35 | # define S_ISREG(m) (((m) & S_IFMT) == S_IFREG) | |
36 | #endif | |
37 | ||
bfb61299 | 38 | #ifdef VMS |
de5bf5d3 | 39 | #include "vms-pwd.h" |
bfb61299 | 40 | #else |
570d7624 | 41 | #include <pwd.h> |
bfb61299 JB |
42 | #endif |
43 | ||
4c3c22f3 RS |
44 | #ifdef MSDOS |
45 | #include "msdos.h" | |
46 | #include <sys/param.h> | |
01369dc7 RS |
47 | #if __DJGPP__ >= 2 |
48 | #include <fcntl.h> | |
49 | #include <string.h> | |
50 | #endif | |
4c3c22f3 RS |
51 | #endif |
52 | ||
570d7624 | 53 | #include <ctype.h> |
bfb61299 JB |
54 | |
55 | #ifdef VMS | |
3d9f5ce2 | 56 | #include "vmsdir.h" |
bfb61299 JB |
57 | #include <perror.h> |
58 | #include <stddef.h> | |
59 | #include <string.h> | |
bfb61299 JB |
60 | #endif |
61 | ||
570d7624 JB |
62 | #include <errno.h> |
63 | ||
bfb61299 | 64 | #ifndef vax11c |
570d7624 | 65 | extern int errno; |
570d7624 JB |
66 | #endif |
67 | ||
ce97267f | 68 | extern char *strerror (); |
570d7624 JB |
69 | |
70 | #ifdef APOLLO | |
71 | #include <sys/time.h> | |
72 | #endif | |
73 | ||
6e23c83e JB |
74 | #ifndef USG |
75 | #ifndef VMS | |
76 | #ifndef BSD4_1 | |
5e570b75 | 77 | #ifndef WINDOWSNT |
6e23c83e JB |
78 | #define HAVE_FSYNC |
79 | #endif | |
80 | #endif | |
81 | #endif | |
5e570b75 | 82 | #endif |
6e23c83e | 83 | |
570d7624 | 84 | #include "lisp.h" |
8d4e077b | 85 | #include "intervals.h" |
570d7624 JB |
86 | #include "buffer.h" |
87 | #include "window.h" | |
88 | ||
5e570b75 RS |
89 | #ifdef WINDOWSNT |
90 | #define NOMINMAX 1 | |
91 | #include <windows.h> | |
92 | #include <stdlib.h> | |
93 | #include <fcntl.h> | |
94 | #endif /* not WINDOWSNT */ | |
95 | ||
199607e4 RS |
96 | #ifdef DOS_NT |
97 | #define CORRECT_DIR_SEPS(s) \ | |
98 | do { if ('/' == DIRECTORY_SEP) dostounix_filename (s); \ | |
99 | else unixtodos_filename (s); \ | |
100 | } while (0) | |
101 | /* On Windows, drive letters must be alphabetic - on DOS, the Netware | |
102 | redirector allows the six letters between 'Z' and 'a' as well. */ | |
103 | #ifdef MSDOS | |
104 | #define IS_DRIVE(x) ((x) >= 'A' && (x) <= 'z') | |
105 | #endif | |
106 | #ifdef WINDOWSNT | |
107 | #define IS_DRIVE(x) isalpha (x) | |
108 | #endif | |
109 | #endif | |
110 | ||
570d7624 | 111 | #ifdef VMS |
570d7624 JB |
112 | #include <file.h> |
113 | #include <rmsdef.h> | |
114 | #include <fab.h> | |
115 | #include <nam.h> | |
116 | #endif | |
117 | ||
de5bf5d3 | 118 | #include "systime.h" |
570d7624 JB |
119 | |
120 | #ifdef HPUX | |
121 | #include <netio.h> | |
9b7828a5 | 122 | #ifndef HPUX8 |
47e7b9e5 | 123 | #ifndef HPUX9 |
570d7624 JB |
124 | #include <errnet.h> |
125 | #endif | |
9b7828a5 | 126 | #endif |
47e7b9e5 | 127 | #endif |
570d7624 JB |
128 | |
129 | #ifndef O_WRONLY | |
130 | #define O_WRONLY 1 | |
131 | #endif | |
132 | ||
4018b5ef RS |
133 | #ifndef O_RDONLY |
134 | #define O_RDONLY 0 | |
135 | #endif | |
136 | ||
570d7624 JB |
137 | #define min(a, b) ((a) < (b) ? (a) : (b)) |
138 | #define max(a, b) ((a) > (b) ? (a) : (b)) | |
139 | ||
140 | /* Nonzero during writing of auto-save files */ | |
141 | int auto_saving; | |
142 | ||
143 | /* Set by auto_save_1 to mode of original file so Fwrite_region will create | |
144 | a new file with the same mode as the original */ | |
145 | int auto_save_mode_bits; | |
146 | ||
199607e4 | 147 | /* Alist of elements (REGEXP . HANDLER) for file names |
32f4334d RS |
148 | whose I/O is done with a special handler. */ |
149 | Lisp_Object Vfile_name_handler_alist; | |
150 | ||
0d420e88 BG |
151 | /* Format for auto-save files */ |
152 | Lisp_Object Vauto_save_file_format; | |
153 | ||
154 | /* Lisp functions for translating file formats */ | |
155 | Lisp_Object Qformat_decode, Qformat_annotate_function; | |
156 | ||
d6a3cc15 RS |
157 | /* Functions to be called to process text properties in inserted file. */ |
158 | Lisp_Object Vafter_insert_file_functions; | |
159 | ||
160 | /* Functions to be called to create text property annotations for file. */ | |
161 | Lisp_Object Vwrite_region_annotate_functions; | |
162 | ||
6fc6f94b RS |
163 | /* During build_annotations, each time an annotation function is called, |
164 | this holds the annotations made by the previous functions. */ | |
165 | Lisp_Object Vwrite_region_annotations_so_far; | |
166 | ||
e54d3b5d RS |
167 | /* File name in which we write a list of all our auto save files. */ |
168 | Lisp_Object Vauto_save_list_file_name; | |
169 | ||
570d7624 JB |
170 | /* Nonzero means, when reading a filename in the minibuffer, |
171 | start out by inserting the default directory into the minibuffer. */ | |
172 | int insert_default_directory; | |
173 | ||
174 | /* On VMS, nonzero means write new files with record format stmlf. | |
175 | Zero means use var format. */ | |
176 | int vms_stmlf_recfm; | |
177 | ||
199607e4 RS |
178 | /* On NT, specifies the directory separator character, used (eg.) when |
179 | expanding file names. This can be bound to / or \. */ | |
180 | Lisp_Object Vdirectory_sep_char; | |
181 | ||
a65970a0 RS |
182 | /* These variables describe handlers that have "already" had a chance |
183 | to handle the current operation. | |
184 | ||
185 | Vinhibit_file_name_handlers is a list of file name handlers. | |
186 | Vinhibit_file_name_operation is the operation being handled. | |
187 | If we try to handle that operation, we ignore those handlers. */ | |
188 | ||
82c2d839 | 189 | static Lisp_Object Vinhibit_file_name_handlers; |
a65970a0 | 190 | static Lisp_Object Vinhibit_file_name_operation; |
82c2d839 | 191 | |
570d7624 JB |
192 | Lisp_Object Qfile_error, Qfile_already_exists; |
193 | ||
15c65264 RS |
194 | Lisp_Object Qfile_name_history; |
195 | ||
d6a3cc15 RS |
196 | Lisp_Object Qcar_less_than_car; |
197 | ||
570d7624 JB |
198 | report_file_error (string, data) |
199 | char *string; | |
200 | Lisp_Object data; | |
201 | { | |
202 | Lisp_Object errstring; | |
203 | ||
a1f17b2d | 204 | errstring = build_string (strerror (errno)); |
570d7624 JB |
205 | |
206 | /* System error messages are capitalized. Downcase the initial | |
207 | unless it is followed by a slash. */ | |
208 | if (XSTRING (errstring)->data[1] != '/') | |
209 | XSTRING (errstring)->data[0] = DOWNCASE (XSTRING (errstring)->data[0]); | |
210 | ||
211 | while (1) | |
212 | Fsignal (Qfile_error, | |
213 | Fcons (build_string (string), Fcons (errstring, data))); | |
214 | } | |
b5148e85 RS |
215 | |
216 | close_file_unwind (fd) | |
217 | Lisp_Object fd; | |
218 | { | |
219 | close (XFASTINT (fd)); | |
220 | } | |
a1d2b64a RS |
221 | |
222 | /* Restore point, having saved it as a marker. */ | |
223 | ||
224 | restore_point_unwind (location) | |
199607e4 | 225 | Lisp_Object location; |
a1d2b64a RS |
226 | { |
227 | SET_PT (marker_position (location)); | |
228 | Fset_marker (location, Qnil, Qnil); | |
229 | } | |
570d7624 | 230 | \f |
0bf2eed2 | 231 | Lisp_Object Qexpand_file_name; |
273e0829 | 232 | Lisp_Object Qsubstitute_in_file_name; |
0bf2eed2 RS |
233 | Lisp_Object Qdirectory_file_name; |
234 | Lisp_Object Qfile_name_directory; | |
235 | Lisp_Object Qfile_name_nondirectory; | |
642ef245 | 236 | Lisp_Object Qunhandled_file_name_directory; |
0bf2eed2 | 237 | Lisp_Object Qfile_name_as_directory; |
32f4334d | 238 | Lisp_Object Qcopy_file; |
a6e6e718 | 239 | Lisp_Object Qmake_directory_internal; |
32f4334d RS |
240 | Lisp_Object Qdelete_directory; |
241 | Lisp_Object Qdelete_file; | |
242 | Lisp_Object Qrename_file; | |
243 | Lisp_Object Qadd_name_to_file; | |
244 | Lisp_Object Qmake_symbolic_link; | |
245 | Lisp_Object Qfile_exists_p; | |
246 | Lisp_Object Qfile_executable_p; | |
247 | Lisp_Object Qfile_readable_p; | |
248 | Lisp_Object Qfile_symlink_p; | |
249 | Lisp_Object Qfile_writable_p; | |
250 | Lisp_Object Qfile_directory_p; | |
adedc71d | 251 | Lisp_Object Qfile_regular_p; |
32f4334d RS |
252 | Lisp_Object Qfile_accessible_directory_p; |
253 | Lisp_Object Qfile_modes; | |
254 | Lisp_Object Qset_file_modes; | |
255 | Lisp_Object Qfile_newer_than_file_p; | |
256 | Lisp_Object Qinsert_file_contents; | |
257 | Lisp_Object Qwrite_region; | |
258 | Lisp_Object Qverify_visited_file_modtime; | |
3ec46acd | 259 | Lisp_Object Qset_visited_file_modtime; |
32f4334d | 260 | |
49307295 KH |
261 | DEFUN ("find-file-name-handler", Ffind_file_name_handler, Sfind_file_name_handler, 2, 2, 0, |
262 | "Return FILENAME's handler function for OPERATION, if it has one.\n\ | |
642ef245 JB |
263 | Otherwise, return nil.\n\ |
264 | A file name is handled if one of the regular expressions in\n\ | |
82c2d839 | 265 | `file-name-handler-alist' matches it.\n\n\ |
a65970a0 RS |
266 | If OPERATION equals `inhibit-file-name-operation', then we ignore\n\ |
267 | any handlers that are members of `inhibit-file-name-handlers',\n\ | |
268 | but we still do run any other handlers. This lets handlers\n\ | |
82c2d839 | 269 | use the standard functions without calling themselves recursively.") |
49307295 KH |
270 | (filename, operation) |
271 | Lisp_Object filename, operation; | |
32f4334d | 272 | { |
642ef245 | 273 | /* This function must not munge the match data. */ |
a65970a0 | 274 | Lisp_Object chain, inhibited_handlers; |
642ef245 | 275 | |
e4432095 JB |
276 | CHECK_STRING (filename, 0); |
277 | ||
a65970a0 RS |
278 | if (EQ (operation, Vinhibit_file_name_operation)) |
279 | inhibited_handlers = Vinhibit_file_name_handlers; | |
280 | else | |
281 | inhibited_handlers = Qnil; | |
82c2d839 | 282 | |
93c30b5f | 283 | for (chain = Vfile_name_handler_alist; CONSP (chain); |
32f4334d RS |
284 | chain = XCONS (chain)->cdr) |
285 | { | |
286 | Lisp_Object elt; | |
287 | elt = XCONS (chain)->car; | |
93c30b5f | 288 | if (CONSP (elt)) |
32f4334d RS |
289 | { |
290 | Lisp_Object string; | |
291 | string = XCONS (elt)->car; | |
93c30b5f | 292 | if (STRINGP (string) && fast_string_match (string, filename) >= 0) |
a65970a0 RS |
293 | { |
294 | Lisp_Object handler, tem; | |
295 | ||
296 | handler = XCONS (elt)->cdr; | |
297 | tem = Fmemq (handler, inhibited_handlers); | |
298 | if (NILP (tem)) | |
299 | return handler; | |
300 | } | |
32f4334d | 301 | } |
642ef245 JB |
302 | |
303 | QUIT; | |
32f4334d RS |
304 | } |
305 | return Qnil; | |
306 | } | |
307 | \f | |
570d7624 JB |
308 | DEFUN ("file-name-directory", Ffile_name_directory, Sfile_name_directory, |
309 | 1, 1, 0, | |
3b7f6e60 EN |
310 | "Return the directory component in file name FILENAME.\n\ |
311 | Return nil if FILENAME does not include a directory.\n\ | |
570d7624 JB |
312 | Otherwise return a directory spec.\n\ |
313 | Given a Unix syntax file name, returns a string ending in slash;\n\ | |
314 | on VMS, perhaps instead a string ending in `:', `]' or `>'.") | |
3b7f6e60 EN |
315 | (filename) |
316 | Lisp_Object filename; | |
570d7624 JB |
317 | { |
318 | register unsigned char *beg; | |
319 | register unsigned char *p; | |
0bf2eed2 | 320 | Lisp_Object handler; |
570d7624 | 321 | |
3b7f6e60 | 322 | CHECK_STRING (filename, 0); |
570d7624 | 323 | |
0bf2eed2 RS |
324 | /* If the file name has special constructs in it, |
325 | call the corresponding file handler. */ | |
3b7f6e60 | 326 | handler = Ffind_file_name_handler (filename, Qfile_name_directory); |
0bf2eed2 | 327 | if (!NILP (handler)) |
3b7f6e60 | 328 | return call2 (handler, Qfile_name_directory, filename); |
0bf2eed2 | 329 | |
4c3c22f3 | 330 | #ifdef FILE_SYSTEM_CASE |
3b7f6e60 | 331 | filename = FILE_SYSTEM_CASE (filename); |
4c3c22f3 | 332 | #endif |
3b7f6e60 | 333 | beg = XSTRING (filename)->data; |
199607e4 RS |
334 | #ifdef DOS_NT |
335 | beg = strcpy (alloca (strlen (beg) + 1), beg); | |
336 | #endif | |
3b7f6e60 | 337 | p = beg + XSTRING (filename)->size; |
570d7624 | 338 | |
199607e4 | 339 | while (p != beg && !IS_DIRECTORY_SEP (p[-1]) |
570d7624 JB |
340 | #ifdef VMS |
341 | && p[-1] != ':' && p[-1] != ']' && p[-1] != '>' | |
342 | #endif /* VMS */ | |
199607e4 RS |
343 | #ifdef DOS_NT |
344 | /* only recognise drive specifier at beginning */ | |
345 | && !(p[-1] == ':' && p == beg + 2) | |
346 | #endif | |
570d7624 JB |
347 | ) p--; |
348 | ||
349 | if (p == beg) | |
350 | return Qnil; | |
5e570b75 | 351 | #ifdef DOS_NT |
4c3c22f3 RS |
352 | /* Expansion of "c:" to drive and default directory. */ |
353 | if (p == beg + 2 && beg[1] == ':') | |
354 | { | |
4c3c22f3 | 355 | /* MAXPATHLEN+1 is guaranteed to be enough space for getdefdir. */ |
199607e4 RS |
356 | unsigned char *res = alloca (MAXPATHLEN + 1); |
357 | if (getdefdir (toupper (*beg) - 'A' + 1, res)) | |
4c3c22f3 | 358 | { |
199607e4 | 359 | if (!IS_DIRECTORY_SEP (res[strlen (res) - 1])) |
4c3c22f3 RS |
360 | strcat (res, "/"); |
361 | beg = res; | |
362 | p = beg + strlen (beg); | |
363 | } | |
364 | } | |
199607e4 | 365 | CORRECT_DIR_SEPS (beg); |
5e570b75 | 366 | #endif /* DOS_NT */ |
570d7624 JB |
367 | return make_string (beg, p - beg); |
368 | } | |
369 | ||
370 | DEFUN ("file-name-nondirectory", Ffile_name_nondirectory, Sfile_name_nondirectory, | |
371 | 1, 1, 0, | |
3b7f6e60 | 372 | "Return file name FILENAME sans its directory.\n\ |
570d7624 JB |
373 | For example, in a Unix-syntax file name,\n\ |
374 | this is everything after the last slash,\n\ | |
375 | or the entire name if it contains no slash.") | |
3b7f6e60 EN |
376 | (filename) |
377 | Lisp_Object filename; | |
570d7624 JB |
378 | { |
379 | register unsigned char *beg, *p, *end; | |
0bf2eed2 | 380 | Lisp_Object handler; |
570d7624 | 381 | |
3b7f6e60 | 382 | CHECK_STRING (filename, 0); |
570d7624 | 383 | |
0bf2eed2 RS |
384 | /* If the file name has special constructs in it, |
385 | call the corresponding file handler. */ | |
3b7f6e60 | 386 | handler = Ffind_file_name_handler (filename, Qfile_name_nondirectory); |
0bf2eed2 | 387 | if (!NILP (handler)) |
3b7f6e60 | 388 | return call2 (handler, Qfile_name_nondirectory, filename); |
0bf2eed2 | 389 | |
3b7f6e60 EN |
390 | beg = XSTRING (filename)->data; |
391 | end = p = beg + XSTRING (filename)->size; | |
570d7624 | 392 | |
199607e4 | 393 | while (p != beg && !IS_DIRECTORY_SEP (p[-1]) |
570d7624 JB |
394 | #ifdef VMS |
395 | && p[-1] != ':' && p[-1] != ']' && p[-1] != '>' | |
396 | #endif /* VMS */ | |
199607e4 RS |
397 | #ifdef DOS_NT |
398 | /* only recognise drive specifier at beginning */ | |
399 | && !(p[-1] == ':' && p == beg + 2) | |
400 | #endif | |
570d7624 JB |
401 | ) p--; |
402 | ||
403 | return make_string (p, end - p); | |
404 | } | |
642ef245 JB |
405 | |
406 | DEFUN ("unhandled-file-name-directory", Funhandled_file_name_directory, Sunhandled_file_name_directory, 1, 1, 0, | |
407 | "Return a directly usable directory name somehow associated with FILENAME.\n\ | |
408 | A `directly usable' directory name is one that may be used without the\n\ | |
409 | intervention of any file handler.\n\ | |
410 | If FILENAME is a directly usable file itself, return\n\ | |
411 | (file-name-directory FILENAME).\n\ | |
412 | The `call-process' and `start-process' functions use this function to\n\ | |
413 | get a current directory to run processes in.") | |
414 | (filename) | |
415 | Lisp_Object filename; | |
416 | { | |
417 | Lisp_Object handler; | |
418 | ||
419 | /* If the file name has special constructs in it, | |
420 | call the corresponding file handler. */ | |
49307295 | 421 | handler = Ffind_file_name_handler (filename, Qunhandled_file_name_directory); |
642ef245 JB |
422 | if (!NILP (handler)) |
423 | return call2 (handler, Qunhandled_file_name_directory, filename); | |
424 | ||
425 | return Ffile_name_directory (filename); | |
426 | } | |
427 | ||
570d7624 JB |
428 | \f |
429 | char * | |
430 | file_name_as_directory (out, in) | |
431 | char *out, *in; | |
432 | { | |
433 | int size = strlen (in) - 1; | |
434 | ||
435 | strcpy (out, in); | |
436 | ||
437 | #ifdef VMS | |
438 | /* Is it already a directory string? */ | |
439 | if (in[size] == ':' || in[size] == ']' || in[size] == '>') | |
440 | return out; | |
441 | /* Is it a VMS directory file name? If so, hack VMS syntax. */ | |
442 | else if (! index (in, '/') | |
443 | && ((size > 3 && ! strcmp (&in[size - 3], ".DIR")) | |
444 | || (size > 3 && ! strcmp (&in[size - 3], ".dir")) | |
445 | || (size > 5 && (! strncmp (&in[size - 5], ".DIR", 4) | |
446 | || ! strncmp (&in[size - 5], ".dir", 4)) | |
447 | && (in[size - 1] == '.' || in[size - 1] == ';') | |
448 | && in[size] == '1'))) | |
449 | { | |
450 | register char *p, *dot; | |
451 | char brack; | |
452 | ||
453 | /* x.dir -> [.x] | |
454 | dir:x.dir --> dir:[x] | |
455 | dir:[x]y.dir --> dir:[x.y] */ | |
456 | p = in + size; | |
457 | while (p != in && *p != ':' && *p != '>' && *p != ']') p--; | |
458 | if (p != in) | |
459 | { | |
460 | strncpy (out, in, p - in); | |
461 | out[p - in] = '\0'; | |
462 | if (*p == ':') | |
463 | { | |
464 | brack = ']'; | |
465 | strcat (out, ":["); | |
466 | } | |
467 | else | |
468 | { | |
469 | brack = *p; | |
470 | strcat (out, "."); | |
471 | } | |
472 | p++; | |
473 | } | |
474 | else | |
475 | { | |
476 | brack = ']'; | |
477 | strcpy (out, "[."); | |
478 | } | |
bfb61299 JB |
479 | dot = index (p, '.'); |
480 | if (dot) | |
570d7624 JB |
481 | { |
482 | /* blindly remove any extension */ | |
483 | size = strlen (out) + (dot - p); | |
484 | strncat (out, p, dot - p); | |
485 | } | |
486 | else | |
487 | { | |
488 | strcat (out, p); | |
489 | size = strlen (out); | |
490 | } | |
491 | out[size++] = brack; | |
492 | out[size] = '\0'; | |
493 | } | |
494 | #else /* not VMS */ | |
495 | /* For Unix syntax, Append a slash if necessary */ | |
199607e4 | 496 | if (!IS_DIRECTORY_SEP (out[size])) |
5e570b75 RS |
497 | { |
498 | out[size + 1] = DIRECTORY_SEP; | |
499 | out[size + 2] = '\0'; | |
500 | } | |
199607e4 RS |
501 | #ifdef DOS_NT |
502 | CORRECT_DIR_SEPS (out); | |
503 | #endif | |
570d7624 JB |
504 | #endif /* not VMS */ |
505 | return out; | |
506 | } | |
507 | ||
508 | DEFUN ("file-name-as-directory", Ffile_name_as_directory, | |
509 | Sfile_name_as_directory, 1, 1, 0, | |
510 | "Return a string representing file FILENAME interpreted as a directory.\n\ | |
511 | This operation exists because a directory is also a file, but its name as\n\ | |
512 | a directory is different from its name as a file.\n\ | |
513 | The result can be used as the value of `default-directory'\n\ | |
514 | or passed as second argument to `expand-file-name'.\n\ | |
515 | For a Unix-syntax file name, just appends a slash.\n\ | |
516 | On VMS, converts \"[X]FOO.DIR\" to \"[X.FOO]\", etc.") | |
517 | (file) | |
518 | Lisp_Object file; | |
519 | { | |
520 | char *buf; | |
0bf2eed2 | 521 | Lisp_Object handler; |
570d7624 JB |
522 | |
523 | CHECK_STRING (file, 0); | |
265a9e55 | 524 | if (NILP (file)) |
570d7624 | 525 | return Qnil; |
0bf2eed2 RS |
526 | |
527 | /* If the file name has special constructs in it, | |
528 | call the corresponding file handler. */ | |
49307295 | 529 | handler = Ffind_file_name_handler (file, Qfile_name_as_directory); |
0bf2eed2 RS |
530 | if (!NILP (handler)) |
531 | return call2 (handler, Qfile_name_as_directory, file); | |
532 | ||
570d7624 JB |
533 | buf = (char *) alloca (XSTRING (file)->size + 10); |
534 | return build_string (file_name_as_directory (buf, XSTRING (file)->data)); | |
535 | } | |
536 | \f | |
537 | /* | |
538 | * Convert from directory name to filename. | |
539 | * On VMS: | |
540 | * xyzzy:[mukesh.emacs] => xyzzy:[mukesh]emacs.dir.1 | |
541 | * xyzzy:[mukesh] => xyzzy:[000000]mukesh.dir.1 | |
199607e4 | 542 | * On UNIX, it's simple: just make sure there isn't a terminating / |
570d7624 JB |
543 | |
544 | * Value is nonzero if the string output is different from the input. | |
545 | */ | |
546 | ||
547 | directory_file_name (src, dst) | |
548 | char *src, *dst; | |
549 | { | |
550 | long slen; | |
551 | #ifdef VMS | |
552 | long rlen; | |
553 | char * ptr, * rptr; | |
554 | char bracket; | |
555 | struct FAB fab = cc$rms_fab; | |
556 | struct NAM nam = cc$rms_nam; | |
557 | char esa[NAM$C_MAXRSS]; | |
558 | #endif /* VMS */ | |
559 | ||
560 | slen = strlen (src); | |
561 | #ifdef VMS | |
562 | if (! index (src, '/') | |
563 | && (src[slen - 1] == ']' | |
564 | || src[slen - 1] == ':' | |
565 | || src[slen - 1] == '>')) | |
566 | { | |
567 | /* VMS style - convert [x.y.z] to [x.y]z, [x] to [000000]x */ | |
568 | fab.fab$l_fna = src; | |
569 | fab.fab$b_fns = slen; | |
570 | fab.fab$l_nam = &nam; | |
571 | fab.fab$l_fop = FAB$M_NAM; | |
572 | ||
573 | nam.nam$l_esa = esa; | |
574 | nam.nam$b_ess = sizeof esa; | |
575 | nam.nam$b_nop |= NAM$M_SYNCHK; | |
576 | ||
577 | /* We call SYS$PARSE to handle such things as [--] for us. */ | |
199607e4 | 578 | if (SYS$PARSE (&fab, 0, 0) == RMS$_NORMAL) |
570d7624 JB |
579 | { |
580 | slen = nam.nam$b_esl; | |
581 | if (esa[slen - 1] == ';' && esa[slen - 2] == '.') | |
582 | slen -= 2; | |
583 | esa[slen] = '\0'; | |
584 | src = esa; | |
585 | } | |
586 | if (src[slen - 1] != ']' && src[slen - 1] != '>') | |
587 | { | |
588 | /* what about when we have logical_name:???? */ | |
589 | if (src[slen - 1] == ':') | |
5e570b75 | 590 | { /* Xlate logical name and see what we get */ |
570d7624 JB |
591 | ptr = strcpy (dst, src); /* upper case for getenv */ |
592 | while (*ptr) | |
593 | { | |
594 | if ('a' <= *ptr && *ptr <= 'z') | |
595 | *ptr -= 040; | |
596 | ptr++; | |
597 | } | |
5e570b75 | 598 | dst[slen - 1] = 0; /* remove colon */ |
570d7624 JB |
599 | if (!(src = egetenv (dst))) |
600 | return 0; | |
601 | /* should we jump to the beginning of this procedure? | |
602 | Good points: allows us to use logical names that xlate | |
603 | to Unix names, | |
604 | Bad points: can be a problem if we just translated to a device | |
605 | name... | |
606 | For now, I'll punt and always expect VMS names, and hope for | |
607 | the best! */ | |
608 | slen = strlen (src); | |
609 | if (src[slen - 1] != ']' && src[slen - 1] != '>') | |
610 | { /* no recursion here! */ | |
611 | strcpy (dst, src); | |
612 | return 0; | |
613 | } | |
614 | } | |
615 | else | |
5e570b75 | 616 | { /* not a directory spec */ |
570d7624 JB |
617 | strcpy (dst, src); |
618 | return 0; | |
619 | } | |
620 | } | |
621 | bracket = src[slen - 1]; | |
622 | ||
623 | /* If bracket is ']' or '>', bracket - 2 is the corresponding | |
624 | opening bracket. */ | |
bfb61299 JB |
625 | ptr = index (src, bracket - 2); |
626 | if (ptr == 0) | |
570d7624 JB |
627 | { /* no opening bracket */ |
628 | strcpy (dst, src); | |
629 | return 0; | |
630 | } | |
631 | if (!(rptr = rindex (src, '.'))) | |
632 | rptr = ptr; | |
633 | slen = rptr - src; | |
634 | strncpy (dst, src, slen); | |
635 | dst[slen] = '\0'; | |
636 | if (*rptr == '.') | |
637 | { | |
638 | dst[slen++] = bracket; | |
639 | dst[slen] = '\0'; | |
640 | } | |
641 | else | |
642 | { | |
643 | /* If we have the top-level of a rooted directory (i.e. xx:[000000]), | |
644 | then translate the device and recurse. */ | |
645 | if (dst[slen - 1] == ':' | |
5e570b75 | 646 | && dst[slen - 2] != ':' /* skip decnet nodes */ |
199607e4 | 647 | && strcmp (src + slen, "[000000]") == 0) |
570d7624 JB |
648 | { |
649 | dst[slen - 1] = '\0'; | |
650 | if ((ptr = egetenv (dst)) | |
651 | && (rlen = strlen (ptr) - 1) > 0 | |
652 | && (ptr[rlen] == ']' || ptr[rlen] == '>') | |
653 | && ptr[rlen - 1] == '.') | |
654 | { | |
72b21817 RS |
655 | char * buf = (char *) alloca (strlen (ptr) + 1); |
656 | strcpy (buf, ptr); | |
657 | buf[rlen - 1] = ']'; | |
658 | buf[rlen] = '\0'; | |
659 | return directory_file_name (buf, dst); | |
570d7624 JB |
660 | } |
661 | else | |
662 | dst[slen - 1] = ':'; | |
663 | } | |
664 | strcat (dst, "[000000]"); | |
665 | slen += 8; | |
666 | } | |
667 | rptr++; | |
668 | rlen = strlen (rptr) - 1; | |
669 | strncat (dst, rptr, rlen); | |
670 | dst[slen + rlen] = '\0'; | |
671 | strcat (dst, ".DIR.1"); | |
672 | return 1; | |
673 | } | |
674 | #endif /* VMS */ | |
675 | /* Process as Unix format: just remove any final slash. | |
676 | But leave "/" unchanged; do not change it to "". */ | |
677 | strcpy (dst, src); | |
125feee8 RS |
678 | #ifdef APOLLO |
679 | /* Handle // as root for apollo's. */ | |
680 | if ((slen > 2 && dst[slen - 1] == '/') | |
681 | || (slen > 1 && dst[0] != '/' && dst[slen - 1] == '/')) | |
682 | dst[slen - 1] = 0; | |
683 | #else | |
199607e4 | 684 | if (slen > 1 |
5e570b75 | 685 | && IS_DIRECTORY_SEP (dst[slen - 1]) |
4592782e RS |
686 | #ifdef DOS_NT |
687 | && !IS_ANY_SEP (dst[slen - 2]) | |
688 | #endif | |
689 | ) | |
570d7624 | 690 | dst[slen - 1] = 0; |
199607e4 RS |
691 | #endif |
692 | #ifdef DOS_NT | |
693 | CORRECT_DIR_SEPS (dst); | |
125feee8 | 694 | #endif |
570d7624 JB |
695 | return 1; |
696 | } | |
697 | ||
698 | DEFUN ("directory-file-name", Fdirectory_file_name, Sdirectory_file_name, | |
699 | 1, 1, 0, | |
3b7f6e60 EN |
700 | "Returns the file name of the directory named DIRECTORY.\n\ |
701 | This is the name of the file that holds the data for the directory DIRECTORY.\n\ | |
570d7624 JB |
702 | This operation exists because a directory is also a file, but its name as\n\ |
703 | a directory is different from its name as a file.\n\ | |
704 | In Unix-syntax, this function just removes the final slash.\n\ | |
705 | On VMS, given a VMS-syntax directory name such as \"[X.Y]\",\n\ | |
706 | it returns a file name such as \"[X]Y.DIR.1\".") | |
707 | (directory) | |
708 | Lisp_Object directory; | |
709 | { | |
710 | char *buf; | |
0bf2eed2 | 711 | Lisp_Object handler; |
570d7624 JB |
712 | |
713 | CHECK_STRING (directory, 0); | |
714 | ||
265a9e55 | 715 | if (NILP (directory)) |
570d7624 | 716 | return Qnil; |
0bf2eed2 RS |
717 | |
718 | /* If the file name has special constructs in it, | |
719 | call the corresponding file handler. */ | |
49307295 | 720 | handler = Ffind_file_name_handler (directory, Qdirectory_file_name); |
0bf2eed2 RS |
721 | if (!NILP (handler)) |
722 | return call2 (handler, Qdirectory_file_name, directory); | |
723 | ||
570d7624 JB |
724 | #ifdef VMS |
725 | /* 20 extra chars is insufficient for VMS, since we might perform a | |
726 | logical name translation. an equivalence string can be up to 255 | |
727 | chars long, so grab that much extra space... - sss */ | |
728 | buf = (char *) alloca (XSTRING (directory)->size + 20 + 255); | |
729 | #else | |
730 | buf = (char *) alloca (XSTRING (directory)->size + 20); | |
731 | #endif | |
732 | directory_file_name (XSTRING (directory)->data, buf); | |
733 | return build_string (buf); | |
734 | } | |
735 | ||
736 | DEFUN ("make-temp-name", Fmake_temp_name, Smake_temp_name, 1, 1, 0, | |
737 | "Generate temporary file name (string) starting with PREFIX (a string).\n\ | |
738 | The Emacs process number forms part of the result,\n\ | |
739 | so there is no danger of generating a name being used by another process.") | |
740 | (prefix) | |
741 | Lisp_Object prefix; | |
742 | { | |
743 | Lisp_Object val; | |
3a3bfb18 | 744 | #ifdef MSDOS |
ce6212a5 | 745 | /* Don't use too many characters of the restricted 8+3 DOS |
3a3bfb18 | 746 | filename space. */ |
ce6212a5 | 747 | val = concat2 (prefix, build_string ("a.XXX")); |
3a3bfb18 | 748 | #else |
570d7624 | 749 | val = concat2 (prefix, build_string ("XXXXXX")); |
3a3bfb18 | 750 | #endif |
570d7624 | 751 | mktemp (XSTRING (val)->data); |
199607e4 RS |
752 | #ifdef DOS_NT |
753 | CORRECT_DIR_SEPS (XSTRING (val)->data); | |
754 | #endif | |
570d7624 JB |
755 | return val; |
756 | } | |
757 | \f | |
758 | DEFUN ("expand-file-name", Fexpand_file_name, Sexpand_file_name, 1, 2, 0, | |
3b7f6e60 EN |
759 | "Convert filename NAME to absolute, and canonicalize it.\n\ |
760 | Second arg DEFAULT-DIRECTORY is directory to start with if NAME is relative\n\ | |
761 | (does not start with slash); if DEFAULT-DIRECTORY is nil or missing,\n\ | |
570d7624 | 762 | the current buffer's value of default-directory is used.\n\ |
199607e4 RS |
763 | File name components that are `.' are removed, and \n\ |
764 | so are file name components followed by `..', along with the `..' itself;\n\ | |
b72dea2a | 765 | note that these simplifications are done without checking the resulting\n\ |
199607e4 | 766 | file names in the file system.\n\ |
b72dea2a JB |
767 | An initial `~/' expands to your home directory.\n\ |
768 | An initial `~USER/' expands to USER's home directory.\n\ | |
570d7624 | 769 | See also the function `substitute-in-file-name'.") |
3b7f6e60 EN |
770 | (name, default_directory) |
771 | Lisp_Object name, default_directory; | |
570d7624 JB |
772 | { |
773 | unsigned char *nm; | |
199607e4 | 774 | |
570d7624 JB |
775 | register unsigned char *newdir, *p, *o; |
776 | int tlen; | |
777 | unsigned char *target; | |
778 | struct passwd *pw; | |
570d7624 JB |
779 | #ifdef VMS |
780 | unsigned char * colon = 0; | |
781 | unsigned char * close = 0; | |
782 | unsigned char * slash = 0; | |
783 | unsigned char * brack = 0; | |
784 | int lbrack = 0, rbrack = 0; | |
785 | int dots = 0; | |
786 | #endif /* VMS */ | |
5e570b75 | 787 | #ifdef DOS_NT |
199607e4 | 788 | int drive = 0; |
9a1dc3be | 789 | int collapse_newdir = 1; |
5e570b75 | 790 | #endif /* DOS_NT */ |
199607e4 | 791 | int length; |
0bf2eed2 | 792 | Lisp_Object handler; |
199607e4 | 793 | |
570d7624 JB |
794 | CHECK_STRING (name, 0); |
795 | ||
0bf2eed2 RS |
796 | /* If the file name has special constructs in it, |
797 | call the corresponding file handler. */ | |
49307295 | 798 | handler = Ffind_file_name_handler (name, Qexpand_file_name); |
0bf2eed2 | 799 | if (!NILP (handler)) |
3b7f6e60 | 800 | return call3 (handler, Qexpand_file_name, name, default_directory); |
58fc9587 | 801 | |
3b7f6e60 EN |
802 | /* Use the buffer's default-directory if DEFAULT_DIRECTORY is omitted. */ |
803 | if (NILP (default_directory)) | |
804 | default_directory = current_buffer->directory; | |
805 | CHECK_STRING (default_directory, 1); | |
58fc9587 | 806 | |
3b7f6e60 | 807 | if (!NILP (default_directory)) |
273e0829 | 808 | { |
3b7f6e60 | 809 | handler = Ffind_file_name_handler (default_directory, Qexpand_file_name); |
273e0829 | 810 | if (!NILP (handler)) |
3b7f6e60 | 811 | return call3 (handler, Qexpand_file_name, name, default_directory); |
273e0829 | 812 | } |
0bf2eed2 | 813 | |
3b7f6e60 | 814 | o = XSTRING (default_directory)->data; |
5e570b75 | 815 | |
3b7f6e60 | 816 | /* Make sure DEFAULT_DIRECTORY is properly expanded. |
f14b1c68 | 817 | It would be better to do this down below where we actually use |
3b7f6e60 | 818 | default_directory. Unfortunately, calling Fexpand_file_name recursively |
f14b1c68 JB |
819 | could invoke GC, and the strings might be relocated. This would |
820 | be annoying because we have pointers into strings lying around | |
821 | that would need adjusting, and people would add new pointers to | |
822 | the code and forget to adjust them, resulting in intermittent bugs. | |
4ad827c5 RS |
823 | Putting this call here avoids all that crud. |
824 | ||
825 | The EQ test avoids infinite recursion. */ | |
3b7f6e60 | 826 | if (! NILP (default_directory) && !EQ (default_directory, name) |
199607e4 RS |
827 | /* Save time in some common cases - as long as default_directory |
828 | is not relative, it can be canonicalized with name below (if it | |
829 | is needed at all) without requiring it to be expanded now. */ | |
01937013 | 830 | #ifdef DOS_NT |
199607e4 RS |
831 | /* Detect MSDOS file names with drive specifiers. */ |
832 | && ! (IS_DRIVE (o[0]) && (IS_DEVICE_SEP (o[1]) && IS_DIRECTORY_SEP (o[2]))) | |
833 | #ifdef WINDOWSNT | |
834 | /* Detect Windows file names in UNC format. */ | |
835 | && ! (IS_DIRECTORY_SEP (o[0]) && IS_DIRECTORY_SEP (o[1])) | |
01937013 | 836 | #endif |
199607e4 RS |
837 | #else /* not DOS_NT */ |
838 | /* Detect Unix absolute file names (/... alone is not absolute on | |
839 | DOS or Windows). */ | |
840 | && ! (IS_DIRECTORY_SEP (o[0])) | |
841 | #endif /* not DOS_NT */ | |
842 | ) | |
f14b1c68 JB |
843 | { |
844 | struct gcpro gcpro1; | |
845 | ||
846 | GCPRO1 (name); | |
3b7f6e60 | 847 | default_directory = Fexpand_file_name (default_directory, Qnil); |
f14b1c68 JB |
848 | UNGCPRO; |
849 | } | |
850 | ||
570d7624 JB |
851 | #ifdef VMS |
852 | /* Filenames on VMS are always upper case. */ | |
853 | name = Fupcase (name); | |
854 | #endif | |
4c3c22f3 RS |
855 | #ifdef FILE_SYSTEM_CASE |
856 | name = FILE_SYSTEM_CASE (name); | |
857 | #endif | |
570d7624 JB |
858 | |
859 | nm = XSTRING (name)->data; | |
a5a1cc06 | 860 | |
5e570b75 | 861 | #ifdef DOS_NT |
199607e4 RS |
862 | /* We will force directory separators to be either all \ or /, so make |
863 | a local copy to modify, even if there ends up being no change. */ | |
864 | nm = strcpy (alloca (strlen (nm) + 1), nm); | |
865 | ||
866 | /* Find and remove drive specifier if present; this makes nm absolute | |
867 | even if the rest of the name appears to be relative. */ | |
4c3c22f3 RS |
868 | { |
869 | unsigned char *colon = rindex (nm, ':'); | |
199607e4 | 870 | |
4c3c22f3 | 871 | if (colon) |
199607e4 RS |
872 | /* Only recognize colon as part of drive specifier if there is a |
873 | single alphabetic character preceeding the colon (and if the | |
874 | character before the drive letter, if present, is a directory | |
875 | separator); this is to support the remote system syntax used by | |
876 | ange-ftp, and the "po:username" syntax for POP mailboxes. */ | |
877 | look_again: | |
4c3c22f3 RS |
878 | if (nm == colon) |
879 | nm++; | |
199607e4 RS |
880 | else if (IS_DRIVE (colon[-1]) |
881 | && (colon == nm + 1 || IS_DIRECTORY_SEP (colon[-2]))) | |
4c3c22f3 | 882 | { |
3c455a3b | 883 | drive = colon[-1]; |
4c3c22f3 | 884 | nm = colon + 1; |
199607e4 RS |
885 | } |
886 | else | |
887 | { | |
888 | while (--colon >= nm) | |
889 | if (colon[0] == ':') | |
890 | goto look_again; | |
891 | } | |
4c3c22f3 | 892 | } |
5e570b75 | 893 | #endif /* DOS_NT */ |
4c3c22f3 | 894 | |
3be3c08e RS |
895 | /* Handle // and /~ in middle of file name |
896 | by discarding everything through the first / of that sequence. */ | |
897 | p = nm; | |
898 | while (*p) | |
899 | { | |
199607e4 RS |
900 | /* Since we are expecting the name to be absolute, we can assume |
901 | that each element starts with a "/". */ | |
3be3c08e | 902 | |
3be3c08e RS |
903 | if (IS_DIRECTORY_SEP (p[0]) && IS_DIRECTORY_SEP (p[1]) |
904 | #if defined (APOLLO) || defined (WINDOWSNT) | |
199607e4 | 905 | /* // at start of filename is meaningful on Apollo |
3be3c08e RS |
906 | and WindowsNT systems */ |
907 | && nm != p | |
908 | #endif /* APOLLO || WINDOWSNT */ | |
909 | ) | |
910 | nm = p + 1; | |
911 | ||
3be3c08e RS |
912 | if (IS_DIRECTORY_SEP (p[0]) && p[1] == '~') |
913 | nm = p + 1; | |
914 | ||
915 | p++; | |
916 | } | |
917 | ||
199607e4 RS |
918 | #ifdef WINDOWSNT |
919 | /* Discard any previous drive specifier if nm is now in UNC format. */ | |
920 | if (IS_DIRECTORY_SEP (nm[0]) && IS_DIRECTORY_SEP (nm[1])) | |
921 | { | |
922 | drive = 0; | |
923 | } | |
924 | #endif | |
925 | ||
926 | /* If nm is absolute, look for /./ or /../ sequences; if none are | |
927 | found, we can probably return right away. We will avoid allocating | |
928 | a new string if name is already fully expanded. */ | |
570d7624 | 929 | if ( |
5e570b75 | 930 | IS_DIRECTORY_SEP (nm[0]) |
199607e4 RS |
931 | #ifdef MSDOS |
932 | && drive | |
933 | #endif | |
934 | #ifdef WINDOWSNT | |
935 | && (drive || IS_DIRECTORY_SEP (nm[1])) | |
936 | #endif | |
570d7624 JB |
937 | #ifdef VMS |
938 | || index (nm, ':') | |
939 | #endif /* VMS */ | |
940 | ) | |
941 | { | |
f14b1c68 JB |
942 | /* If it turns out that the filename we want to return is just a |
943 | suffix of FILENAME, we don't need to go through and edit | |
944 | things; we just need to construct a new string using data | |
945 | starting at the middle of FILENAME. If we set lose to a | |
946 | non-zero value, that means we've discovered that we can't do | |
947 | that cool trick. */ | |
948 | int lose = 0; | |
949 | ||
570d7624 | 950 | p = nm; |
570d7624 JB |
951 | while (*p) |
952 | { | |
199607e4 | 953 | /* Since we know the name is absolute, we can assume that each |
c77d647e JB |
954 | element starts with a "/". */ |
955 | ||
c77d647e | 956 | /* "." and ".." are hairy. */ |
5e570b75 | 957 | if (IS_DIRECTORY_SEP (p[0]) |
c77d647e | 958 | && p[1] == '.' |
5e570b75 | 959 | && (IS_DIRECTORY_SEP (p[2]) |
c77d647e | 960 | || p[2] == 0 |
5e570b75 | 961 | || (p[2] == '.' && (IS_DIRECTORY_SEP (p[3]) |
c77d647e | 962 | || p[3] == 0)))) |
570d7624 JB |
963 | lose = 1; |
964 | #ifdef VMS | |
965 | if (p[0] == '\\') | |
966 | lose = 1; | |
967 | if (p[0] == '/') { | |
968 | /* if dev:[dir]/, move nm to / */ | |
969 | if (!slash && p > nm && (brack || colon)) { | |
970 | nm = (brack ? brack + 1 : colon + 1); | |
971 | lbrack = rbrack = 0; | |
972 | brack = 0; | |
973 | colon = 0; | |
974 | } | |
975 | slash = p; | |
976 | } | |
977 | if (p[0] == '-') | |
978 | #ifndef VMS4_4 | |
979 | /* VMS pre V4.4,convert '-'s in filenames. */ | |
980 | if (lbrack == rbrack) | |
981 | { | |
5e570b75 | 982 | if (dots < 2) /* this is to allow negative version numbers */ |
570d7624 JB |
983 | p[0] = '_'; |
984 | } | |
985 | else | |
986 | #endif /* VMS4_4 */ | |
987 | if (lbrack > rbrack && | |
988 | ((p[-1] == '.' || p[-1] == '[' || p[-1] == '<') && | |
989 | (p[1] == '.' || p[1] == ']' || p[1] == '>'))) | |
990 | lose = 1; | |
991 | #ifndef VMS4_4 | |
992 | else | |
993 | p[0] = '_'; | |
994 | #endif /* VMS4_4 */ | |
995 | /* count open brackets, reset close bracket pointer */ | |
996 | if (p[0] == '[' || p[0] == '<') | |
997 | lbrack++, brack = 0; | |
998 | /* count close brackets, set close bracket pointer */ | |
999 | if (p[0] == ']' || p[0] == '>') | |
1000 | rbrack++, brack = p; | |
1001 | /* detect ][ or >< */ | |
1002 | if ((p[0] == ']' || p[0] == '>') && (p[1] == '[' || p[1] == '<')) | |
1003 | lose = 1; | |
1004 | if ((p[0] == ':' || p[0] == ']' || p[0] == '>') && p[1] == '~') | |
1005 | nm = p + 1, lose = 1; | |
1006 | if (p[0] == ':' && (colon || slash)) | |
1007 | /* if dev1:[dir]dev2:, move nm to dev2: */ | |
1008 | if (brack) | |
1009 | { | |
1010 | nm = brack + 1; | |
1011 | brack = 0; | |
1012 | } | |
199607e4 | 1013 | /* if /name/dev:, move nm to dev: */ |
570d7624 JB |
1014 | else if (slash) |
1015 | nm = slash + 1; | |
1016 | /* if node::dev:, move colon following dev */ | |
1017 | else if (colon && colon[-1] == ':') | |
1018 | colon = p; | |
1019 | /* if dev1:dev2:, move nm to dev2: */ | |
1020 | else if (colon && colon[-1] != ':') | |
1021 | { | |
1022 | nm = colon + 1; | |
1023 | colon = 0; | |
1024 | } | |
1025 | if (p[0] == ':' && !colon) | |
1026 | { | |
1027 | if (p[1] == ':') | |
1028 | p++; | |
1029 | colon = p; | |
1030 | } | |
1031 | if (lbrack == rbrack) | |
1032 | if (p[0] == ';') | |
1033 | dots = 2; | |
1034 | else if (p[0] == '.') | |
1035 | dots++; | |
1036 | #endif /* VMS */ | |
1037 | p++; | |
1038 | } | |
1039 | if (!lose) | |
1040 | { | |
1041 | #ifdef VMS | |
1042 | if (index (nm, '/')) | |
1043 | return build_string (sys_translate_unix (nm)); | |
1044 | #endif /* VMS */ | |
199607e4 RS |
1045 | #ifdef DOS_NT |
1046 | /* Make sure directories are all separated with / or \ as | |
1047 | desired, but avoid allocation of a new string when not | |
1048 | required. */ | |
1049 | CORRECT_DIR_SEPS (nm); | |
1050 | #ifdef WINDOWSNT | |
1051 | if (IS_DIRECTORY_SEP (nm[1])) | |
1052 | { | |
1053 | if (strcmp (nm, XSTRING (name)->data) != 0) | |
1054 | name = build_string (nm); | |
1055 | } | |
1056 | else | |
1057 | #endif | |
1058 | /* drive must be set, so this is okay */ | |
1059 | if (strcmp (nm - 2, XSTRING (name)->data) != 0) | |
1060 | { | |
1061 | name = make_string (nm - 2, p - nm + 2); | |
1062 | XSTRING (name)->data[0] = drive; | |
1063 | XSTRING (name)->data[1] = ':'; | |
1064 | } | |
1065 | return name; | |
1066 | #else /* not DOS_NT */ | |
570d7624 JB |
1067 | if (nm == XSTRING (name)->data) |
1068 | return name; | |
1069 | return build_string (nm); | |
5e570b75 | 1070 | #endif /* not DOS_NT */ |
570d7624 JB |
1071 | } |
1072 | } | |
1073 | ||
199607e4 RS |
1074 | /* At this point, nm might or might not be an absolute file name. We |
1075 | need to expand ~ or ~user if present, otherwise prefix nm with | |
1076 | default_directory if nm is not absolute, and finally collapse /./ | |
1077 | and /foo/../ sequences. | |
1078 | ||
1079 | We set newdir to be the appropriate prefix if one is needed: | |
1080 | - the relevant user directory if nm starts with ~ or ~user | |
1081 | - the specified drive's working dir (DOS/NT only) if nm does not | |
1082 | start with / | |
1083 | - the value of default_directory. | |
1084 | ||
1085 | Note that these prefixes are not guaranteed to be absolute (except | |
1086 | for the working dir of a drive). Therefore, to ensure we always | |
1087 | return an absolute name, if the final prefix is not absolute we | |
1088 | append it to the current working directory. */ | |
570d7624 JB |
1089 | |
1090 | newdir = 0; | |
1091 | ||
1092 | if (nm[0] == '~') /* prefix ~ */ | |
c77d647e | 1093 | { |
5e570b75 | 1094 | if (IS_DIRECTORY_SEP (nm[1]) |
570d7624 | 1095 | #ifdef VMS |
c77d647e | 1096 | || nm[1] == ':' |
5e570b75 | 1097 | #endif /* VMS */ |
c77d647e JB |
1098 | || nm[1] == 0) /* ~ by itself */ |
1099 | { | |
1100 | if (!(newdir = (unsigned char *) egetenv ("HOME"))) | |
1101 | newdir = (unsigned char *) ""; | |
199607e4 | 1102 | nm++; |
5e570b75 | 1103 | #ifdef DOS_NT |
9a1dc3be | 1104 | collapse_newdir = 0; |
4c3c22f3 | 1105 | #endif |
570d7624 | 1106 | #ifdef VMS |
c77d647e | 1107 | nm++; /* Don't leave the slash in nm. */ |
5e570b75 | 1108 | #endif /* VMS */ |
c77d647e JB |
1109 | } |
1110 | else /* ~user/filename */ | |
1111 | { | |
5e570b75 | 1112 | for (p = nm; *p && (!IS_DIRECTORY_SEP (*p) |
570d7624 | 1113 | #ifdef VMS |
c77d647e | 1114 | && *p != ':' |
5e570b75 | 1115 | #endif /* VMS */ |
c77d647e JB |
1116 | ); p++); |
1117 | o = (unsigned char *) alloca (p - nm + 1); | |
1118 | bcopy ((char *) nm, o, p - nm); | |
1119 | o [p - nm] = 0; | |
1120 | ||
1121 | pw = (struct passwd *) getpwnam (o + 1); | |
1122 | if (pw) | |
1123 | { | |
1124 | newdir = (unsigned char *) pw -> pw_dir; | |
570d7624 | 1125 | #ifdef VMS |
c77d647e | 1126 | nm = p + 1; /* skip the terminator */ |
570d7624 | 1127 | #else |
c77d647e | 1128 | nm = p; |
199607e4 | 1129 | #ifdef DOS_NT |
9a1dc3be | 1130 | collapse_newdir = 0; |
199607e4 | 1131 | #endif |
5e570b75 | 1132 | #endif /* VMS */ |
c77d647e | 1133 | } |
e5d77022 | 1134 | |
c77d647e JB |
1135 | /* If we don't find a user of that name, leave the name |
1136 | unchanged; don't move nm forward to p. */ | |
1137 | } | |
1138 | } | |
570d7624 | 1139 | |
5e570b75 | 1140 | #ifdef DOS_NT |
199607e4 RS |
1141 | /* On DOS and Windows, nm is absolute if a drive name was specified; |
1142 | use the drive's current directory as the prefix if needed. */ | |
1143 | if (!newdir && drive) | |
1144 | { | |
1145 | /* Get default directory if needed to make nm absolute. */ | |
1146 | if (!IS_DIRECTORY_SEP (nm[0])) | |
1147 | { | |
1148 | newdir = alloca (MAXPATHLEN + 1); | |
1149 | if (!getdefdir (toupper (drive) - 'A' + 1, newdir)) | |
1150 | newdir = NULL; | |
1151 | } | |
1152 | if (!newdir) | |
1153 | { | |
1154 | /* Either nm starts with /, or drive isn't mounted. */ | |
1155 | newdir = alloca (4); | |
1156 | newdir[0] = drive; | |
1157 | newdir[1] = ':'; | |
1158 | newdir[2] = '/'; | |
1159 | newdir[3] = 0; | |
1160 | } | |
1161 | } | |
5e570b75 | 1162 | #endif /* DOS_NT */ |
199607e4 RS |
1163 | |
1164 | /* Finally, if no prefix has been specified and nm is not absolute, | |
1165 | then it must be expanded relative to default_directory. */ | |
1166 | ||
34097368 | 1167 | if (1 |
199607e4 RS |
1168 | #ifndef DOS_NT |
1169 | /* /... alone is not absolute on DOS and Windows. */ | |
34097368 | 1170 | && !IS_DIRECTORY_SEP (nm[0]) |
199607e4 RS |
1171 | #endif |
1172 | #ifdef WINDOWSNT | |
34097368 | 1173 | && !(IS_DIRECTORY_SEP (nm[0]) && IS_DIRECTORY_SEP (nm[1])) |
199607e4 RS |
1174 | #endif |
1175 | #ifdef VMS | |
1176 | && !index (nm, ':') | |
1177 | #endif | |
570d7624 JB |
1178 | && !newdir) |
1179 | { | |
3b7f6e60 | 1180 | newdir = XSTRING (default_directory)->data; |
570d7624 JB |
1181 | } |
1182 | ||
5e570b75 | 1183 | #ifdef DOS_NT |
199607e4 RS |
1184 | if (newdir) |
1185 | { | |
1186 | /* First ensure newdir is an absolute name. */ | |
1187 | if ( | |
1188 | /* Detect MSDOS file names with drive specifiers. */ | |
1189 | ! (IS_DRIVE (newdir[0]) | |
1190 | && IS_DEVICE_SEP (newdir[1]) && IS_DIRECTORY_SEP (newdir[2])) | |
1191 | #ifdef WINDOWSNT | |
1192 | /* Detect Windows file names in UNC format. */ | |
1193 | && ! (IS_DIRECTORY_SEP (newdir[0]) && IS_DIRECTORY_SEP (newdir[1])) | |
1194 | #endif | |
1195 | ) | |
1196 | { | |
1197 | /* Effectively, let newdir be (expand-file-name newdir cwd). | |
1198 | Because of the admonition against calling expand-file-name | |
1199 | when we have pointers into lisp strings, we accomplish this | |
1200 | indirectly by prepending newdir to nm if necessary, and using | |
1201 | cwd (or the wd of newdir's drive) as the new newdir. */ | |
1202 | ||
1203 | if (IS_DRIVE (newdir[0]) && newdir[1] == ':') | |
1204 | { | |
1205 | drive = newdir[0]; | |
1206 | newdir += 2; | |
1207 | } | |
1208 | if (!IS_DIRECTORY_SEP (nm[0])) | |
1209 | { | |
1210 | char * tmp = alloca (strlen (newdir) + strlen (nm) + 2); | |
1211 | file_name_as_directory (tmp, newdir); | |
1212 | strcat (tmp, nm); | |
1213 | nm = tmp; | |
1214 | } | |
1215 | newdir = alloca (MAXPATHLEN + 1); | |
1216 | if (drive) | |
1217 | { | |
1218 | if (!getdefdir (toupper (drive) - 'A' + 1, newdir)) | |
1219 | newdir = "/"; | |
1220 | } | |
1221 | else | |
1222 | getwd (newdir); | |
1223 | } | |
1224 | ||
1225 | /* Strip off drive name from prefix, if present. */ | |
1226 | if (IS_DRIVE (newdir[0]) && newdir[1] == ':') | |
1227 | { | |
1228 | drive = newdir[0]; | |
1229 | newdir += 2; | |
1230 | } | |
1231 | ||
1232 | /* Keep only a prefix from newdir if nm starts with slash | |
1233 | (//server/share for UNC, nothing otherwise). */ | |
9a1dc3be | 1234 | if (IS_DIRECTORY_SEP (nm[0]) && collapse_newdir) |
199607e4 RS |
1235 | { |
1236 | #ifdef WINDOWSNT | |
1237 | if (IS_DIRECTORY_SEP (newdir[0]) && IS_DIRECTORY_SEP (newdir[1])) | |
1238 | { | |
1239 | newdir = strcpy (alloca (strlen (newdir) + 1), newdir); | |
1240 | p = newdir + 2; | |
1241 | while (*p && !IS_DIRECTORY_SEP (*p)) p++; | |
1242 | p++; | |
1243 | while (*p && !IS_DIRECTORY_SEP (*p)) p++; | |
1244 | *p = 0; | |
1245 | } | |
1246 | else | |
1247 | #endif | |
1248 | newdir = ""; | |
1249 | } | |
1250 | } | |
5e570b75 | 1251 | #endif /* DOS_NT */ |
199607e4 RS |
1252 | |
1253 | if (newdir) | |
bfb61299 JB |
1254 | { |
1255 | /* Get rid of any slash at the end of newdir. */ | |
199607e4 | 1256 | length = strlen (newdir); |
5e570b75 | 1257 | if (IS_DIRECTORY_SEP (newdir[length - 1])) |
bfb61299 JB |
1258 | { |
1259 | unsigned char *temp = (unsigned char *) alloca (length); | |
1260 | bcopy (newdir, temp, length - 1); | |
1261 | temp[length - 1] = 0; | |
1262 | newdir = temp; | |
1263 | } | |
1264 | tlen = length + 1; | |
1265 | } | |
1266 | else | |
1267 | tlen = 0; | |
570d7624 | 1268 | |
bfb61299 JB |
1269 | /* Now concatenate the directory and name to new space in the stack frame */ |
1270 | tlen += strlen (nm) + 1; | |
5e570b75 | 1271 | #ifdef DOS_NT |
199607e4 | 1272 | /* Add reserved space for drive name. (The Microsoft x86 compiler |
5e570b75 RS |
1273 | produces incorrect code if the following two lines are combined.) */ |
1274 | target = (unsigned char *) alloca (tlen + 2); | |
1275 | target += 2; | |
1276 | #else /* not DOS_NT */ | |
570d7624 | 1277 | target = (unsigned char *) alloca (tlen); |
5e570b75 | 1278 | #endif /* not DOS_NT */ |
570d7624 JB |
1279 | *target = 0; |
1280 | ||
1281 | if (newdir) | |
1282 | { | |
1283 | #ifndef VMS | |
5e570b75 | 1284 | if (nm[0] == 0 || IS_DIRECTORY_SEP (nm[0])) |
570d7624 JB |
1285 | strcpy (target, newdir); |
1286 | else | |
1287 | #endif | |
c77d647e | 1288 | file_name_as_directory (target, newdir); |
570d7624 JB |
1289 | } |
1290 | ||
1291 | strcat (target, nm); | |
1292 | #ifdef VMS | |
1293 | if (index (target, '/')) | |
1294 | strcpy (target, sys_translate_unix (target)); | |
1295 | #endif /* VMS */ | |
1296 | ||
199607e4 RS |
1297 | /* ASSERT (IS_DIRECTORY_SEP (target[0])) if not VMS */ |
1298 | ||
c77d647e | 1299 | /* Now canonicalize by removing /. and /foo/.. if they appear. */ |
570d7624 JB |
1300 | |
1301 | p = target; | |
1302 | o = target; | |
1303 | ||
1304 | while (*p) | |
1305 | { | |
1306 | #ifdef VMS | |
1307 | if (*p != ']' && *p != '>' && *p != '-') | |
1308 | { | |
1309 | if (*p == '\\') | |
1310 | p++; | |
1311 | *o++ = *p++; | |
1312 | } | |
1313 | else if ((p[0] == ']' || p[0] == '>') && p[0] == p[1] + 2) | |
1314 | /* brackets are offset from each other by 2 */ | |
1315 | { | |
1316 | p += 2; | |
1317 | if (*p != '.' && *p != '-' && o[-1] != '.') | |
1318 | /* convert [foo][bar] to [bar] */ | |
1319 | while (o[-1] != '[' && o[-1] != '<') | |
1320 | o--; | |
1321 | else if (*p == '-' && *o != '.') | |
1322 | *--p = '.'; | |
1323 | } | |
1324 | else if (p[0] == '-' && o[-1] == '.' && | |
1325 | (p[1] == '.' || p[1] == ']' || p[1] == '>')) | |
1326 | /* flush .foo.- ; leave - if stopped by '[' or '<' */ | |
1327 | { | |
1328 | do | |
1329 | o--; | |
1330 | while (o[-1] != '.' && o[-1] != '[' && o[-1] != '<'); | |
5e570b75 | 1331 | if (p[1] == '.') /* foo.-.bar ==> bar. */ |
570d7624 JB |
1332 | p += 2; |
1333 | else if (o[-1] == '.') /* '.foo.-]' ==> ']' */ | |
1334 | p++, o--; | |
1335 | /* else [foo.-] ==> [-] */ | |
1336 | } | |
1337 | else | |
1338 | { | |
1339 | #ifndef VMS4_4 | |
1340 | if (*p == '-' && | |
1341 | o[-1] != '[' && o[-1] != '<' && o[-1] != '.' && | |
1342 | p[1] != ']' && p[1] != '>' && p[1] != '.') | |
1343 | *p = '_'; | |
1344 | #endif /* VMS4_4 */ | |
1345 | *o++ = *p++; | |
1346 | } | |
1347 | #else /* not VMS */ | |
5e570b75 RS |
1348 | if (!IS_DIRECTORY_SEP (*p)) |
1349 | { | |
570d7624 JB |
1350 | *o++ = *p++; |
1351 | } | |
c0fa5a0b KH |
1352 | else if (IS_DIRECTORY_SEP (p[0]) && IS_DIRECTORY_SEP (p[1]) |
1353 | #if defined (APOLLO) || defined (WINDOWSNT) | |
199607e4 | 1354 | /* // at start of filename is meaningful in Apollo |
c0fa5a0b | 1355 | and WindowsNT systems */ |
570d7624 | 1356 | && o != target |
199607e4 | 1357 | #endif /* APOLLO || WINDOWSNT */ |
570d7624 JB |
1358 | ) |
1359 | { | |
1360 | o = target; | |
1361 | p++; | |
1362 | } | |
5e570b75 | 1363 | else if (IS_DIRECTORY_SEP (p[0]) |
c77d647e | 1364 | && p[1] == '.' |
5e570b75 | 1365 | && (IS_DIRECTORY_SEP (p[2]) |
c77d647e JB |
1366 | || p[2] == 0)) |
1367 | { | |
1368 | /* If "/." is the entire filename, keep the "/". Otherwise, | |
1369 | just delete the whole "/.". */ | |
1370 | if (o == target && p[2] == '\0') | |
1371 | *o++ = *p; | |
1372 | p += 2; | |
1373 | } | |
c0fa5a0b | 1374 | else if (IS_DIRECTORY_SEP (p[0]) && p[1] == '.' && p[2] == '.' |
570d7624 JB |
1375 | /* `/../' is the "superroot" on certain file systems. */ |
1376 | && o != target | |
5e570b75 | 1377 | && (IS_DIRECTORY_SEP (p[3]) || p[3] == 0)) |
570d7624 | 1378 | { |
5e570b75 | 1379 | while (o != target && (--o) && !IS_DIRECTORY_SEP (*o)) |
570d7624 | 1380 | ; |
570d7624 JB |
1381 | p += 3; |
1382 | } | |
1383 | else | |
5e570b75 | 1384 | { |
570d7624 JB |
1385 | *o++ = *p++; |
1386 | } | |
1387 | #endif /* not VMS */ | |
1388 | } | |
1389 | ||
5e570b75 | 1390 | #ifdef DOS_NT |
199607e4 | 1391 | /* At last, set drive name. */ |
5e570b75 | 1392 | #ifdef WINDOWSNT |
199607e4 RS |
1393 | /* Except for network file name. */ |
1394 | if (!(IS_DIRECTORY_SEP (target[0]) && IS_DIRECTORY_SEP (target[1]))) | |
5e570b75 | 1395 | #endif /* WINDOWSNT */ |
4c3c22f3 | 1396 | { |
199607e4 | 1397 | if (!drive) abort (); |
4c3c22f3 | 1398 | target -= 2; |
199607e4 | 1399 | target[0] = drive; |
4c3c22f3 RS |
1400 | target[1] = ':'; |
1401 | } | |
199607e4 | 1402 | CORRECT_DIR_SEPS (target); |
5e570b75 | 1403 | #endif /* DOS_NT */ |
4c3c22f3 | 1404 | |
570d7624 JB |
1405 | return make_string (target, o - target); |
1406 | } | |
5e570b75 | 1407 | |
570d7624 | 1408 | #if 0 |
5e570b75 | 1409 | /* Changed this DEFUN to a DEAFUN, so as not to confuse `make-docfile'. */ |
e5d77022 | 1410 | DEAFUN ("expand-file-name", Fexpand_file_name, Sexpand_file_name, 1, 2, 0, |
570d7624 JB |
1411 | "Convert FILENAME to absolute, and canonicalize it.\n\ |
1412 | Second arg DEFAULT is directory to start with if FILENAME is relative\n\ | |
1413 | (does not start with slash); if DEFAULT is nil or missing,\n\ | |
1414 | the current buffer's value of default-directory is used.\n\ | |
1415 | Filenames containing `.' or `..' as components are simplified;\n\ | |
1416 | initial `~/' expands to your home directory.\n\ | |
1417 | See also the function `substitute-in-file-name'.") | |
1418 | (name, defalt) | |
1419 | Lisp_Object name, defalt; | |
1420 | { | |
1421 | unsigned char *nm; | |
199607e4 | 1422 | |
570d7624 JB |
1423 | register unsigned char *newdir, *p, *o; |
1424 | int tlen; | |
1425 | unsigned char *target; | |
1426 | struct passwd *pw; | |
1427 | int lose; | |
1428 | #ifdef VMS | |
1429 | unsigned char * colon = 0; | |
1430 | unsigned char * close = 0; | |
1431 | unsigned char * slash = 0; | |
1432 | unsigned char * brack = 0; | |
1433 | int lbrack = 0, rbrack = 0; | |
1434 | int dots = 0; | |
1435 | #endif /* VMS */ | |
199607e4 | 1436 | |
570d7624 JB |
1437 | CHECK_STRING (name, 0); |
1438 | ||
1439 | #ifdef VMS | |
1440 | /* Filenames on VMS are always upper case. */ | |
1441 | name = Fupcase (name); | |
1442 | #endif | |
1443 | ||
1444 | nm = XSTRING (name)->data; | |
199607e4 | 1445 | |
570d7624 JB |
1446 | /* If nm is absolute, flush ...// and detect /./ and /../. |
1447 | If no /./ or /../ we can return right away. */ | |
1448 | if ( | |
1449 | nm[0] == '/' | |
1450 | #ifdef VMS | |
1451 | || index (nm, ':') | |
1452 | #endif /* VMS */ | |
1453 | ) | |
1454 | { | |
1455 | p = nm; | |
1456 | lose = 0; | |
1457 | while (*p) | |
1458 | { | |
1459 | if (p[0] == '/' && p[1] == '/' | |
1460 | #ifdef APOLLO | |
1461 | /* // at start of filename is meaningful on Apollo system */ | |
1462 | && nm != p | |
1463 | #endif /* APOLLO */ | |
1464 | ) | |
1465 | nm = p + 1; | |
1466 | if (p[0] == '/' && p[1] == '~') | |
1467 | nm = p + 1, lose = 1; | |
1468 | if (p[0] == '/' && p[1] == '.' | |
1469 | && (p[2] == '/' || p[2] == 0 | |
1470 | || (p[2] == '.' && (p[3] == '/' || p[3] == 0)))) | |
1471 | lose = 1; | |
1472 | #ifdef VMS | |
1473 | if (p[0] == '\\') | |
1474 | lose = 1; | |
1475 | if (p[0] == '/') { | |
1476 | /* if dev:[dir]/, move nm to / */ | |
1477 | if (!slash && p > nm && (brack || colon)) { | |
1478 | nm = (brack ? brack + 1 : colon + 1); | |
1479 | lbrack = rbrack = 0; | |
1480 | brack = 0; | |
1481 | colon = 0; | |
1482 | } | |
1483 | slash = p; | |
1484 | } | |
1485 | if (p[0] == '-') | |
1486 | #ifndef VMS4_4 | |
1487 | /* VMS pre V4.4,convert '-'s in filenames. */ | |
1488 | if (lbrack == rbrack) | |
1489 | { | |
5e570b75 | 1490 | if (dots < 2) /* this is to allow negative version numbers */ |
570d7624 JB |
1491 | p[0] = '_'; |
1492 | } | |
1493 | else | |
1494 | #endif /* VMS4_4 */ | |
1495 | if (lbrack > rbrack && | |
1496 | ((p[-1] == '.' || p[-1] == '[' || p[-1] == '<') && | |
1497 | (p[1] == '.' || p[1] == ']' || p[1] == '>'))) | |
1498 | lose = 1; | |
1499 | #ifndef VMS4_4 | |
1500 | else | |
1501 | p[0] = '_'; | |
1502 | #endif /* VMS4_4 */ | |
1503 | /* count open brackets, reset close bracket pointer */ | |
1504 | if (p[0] == '[' || p[0] == '<') | |
1505 | lbrack++, brack = 0; | |
1506 | /* count close brackets, set close bracket pointer */ | |
1507 | if (p[0] == ']' || p[0] == '>') | |
1508 | rbrack++, brack = p; | |
1509 | /* detect ][ or >< */ | |
1510 | if ((p[0] == ']' || p[0] == '>') && (p[1] == '[' || p[1] == '<')) | |
1511 | lose = 1; | |
1512 | if ((p[0] == ':' || p[0] == ']' || p[0] == '>') && p[1] == '~') | |
1513 | nm = p + 1, lose = 1; | |
1514 | if (p[0] == ':' && (colon || slash)) | |
1515 | /* if dev1:[dir]dev2:, move nm to dev2: */ | |
1516 | if (brack) | |
1517 | { | |
1518 | nm = brack + 1; | |
1519 | brack = 0; | |
1520 | } | |
199607e4 | 1521 | /* If /name/dev:, move nm to dev: */ |
570d7624 JB |
1522 | else if (slash) |
1523 | nm = slash + 1; | |
199607e4 | 1524 | /* If node::dev:, move colon following dev */ |
570d7624 JB |
1525 | else if (colon && colon[-1] == ':') |
1526 | colon = p; | |
199607e4 | 1527 | /* If dev1:dev2:, move nm to dev2: */ |
570d7624 JB |
1528 | else if (colon && colon[-1] != ':') |
1529 | { | |
1530 | nm = colon + 1; | |
1531 | colon = 0; | |
1532 | } | |
1533 | if (p[0] == ':' && !colon) | |
1534 | { | |
1535 | if (p[1] == ':') | |
1536 | p++; | |
1537 | colon = p; | |
1538 | } | |
1539 | if (lbrack == rbrack) | |
1540 | if (p[0] == ';') | |
1541 | dots = 2; | |
1542 | else if (p[0] == '.') | |
1543 | dots++; | |
1544 | #endif /* VMS */ | |
1545 | p++; | |
1546 | } | |
1547 | if (!lose) | |
1548 | { | |
1549 | #ifdef VMS | |
1550 | if (index (nm, '/')) | |
1551 | return build_string (sys_translate_unix (nm)); | |
1552 | #endif /* VMS */ | |
1553 | if (nm == XSTRING (name)->data) | |
1554 | return name; | |
1555 | return build_string (nm); | |
1556 | } | |
1557 | } | |
1558 | ||
1559 | /* Now determine directory to start with and put it in NEWDIR */ | |
1560 | ||
1561 | newdir = 0; | |
1562 | ||
5e570b75 | 1563 | if (nm[0] == '~') /* prefix ~ */ |
570d7624 JB |
1564 | if (nm[1] == '/' |
1565 | #ifdef VMS | |
1566 | || nm[1] == ':' | |
1567 | #endif /* VMS */ | |
1568 | || nm[1] == 0)/* ~/filename */ | |
1569 | { | |
1570 | if (!(newdir = (unsigned char *) egetenv ("HOME"))) | |
1571 | newdir = (unsigned char *) ""; | |
1572 | nm++; | |
1573 | #ifdef VMS | |
5e570b75 | 1574 | nm++; /* Don't leave the slash in nm. */ |
570d7624 JB |
1575 | #endif /* VMS */ |
1576 | } | |
1577 | else /* ~user/filename */ | |
1578 | { | |
1579 | /* Get past ~ to user */ | |
1580 | unsigned char *user = nm + 1; | |
1581 | /* Find end of name. */ | |
1582 | unsigned char *ptr = (unsigned char *) index (user, '/'); | |
1583 | int len = ptr ? ptr - user : strlen (user); | |
1584 | #ifdef VMS | |
1585 | unsigned char *ptr1 = index (user, ':'); | |
1586 | if (ptr1 != 0 && ptr1 - user < len) | |
1587 | len = ptr1 - user; | |
5e570b75 | 1588 | #endif /* VMS */ |
570d7624 JB |
1589 | /* Copy the user name into temp storage. */ |
1590 | o = (unsigned char *) alloca (len + 1); | |
1591 | bcopy ((char *) user, o, len); | |
1592 | o[len] = 0; | |
1593 | ||
1594 | /* Look up the user name. */ | |
1595 | pw = (struct passwd *) getpwnam (o + 1); | |
1596 | if (!pw) | |
1597 | error ("\"%s\" isn't a registered user", o + 1); | |
1598 | ||
1599 | newdir = (unsigned char *) pw->pw_dir; | |
1600 | ||
1601 | /* Discard the user name from NM. */ | |
1602 | nm += len; | |
1603 | } | |
1604 | ||
1605 | if (nm[0] != '/' | |
1606 | #ifdef VMS | |
1607 | && !index (nm, ':') | |
1608 | #endif /* not VMS */ | |
1609 | && !newdir) | |
1610 | { | |
265a9e55 | 1611 | if (NILP (defalt)) |
570d7624 JB |
1612 | defalt = current_buffer->directory; |
1613 | CHECK_STRING (defalt, 1); | |
1614 | newdir = XSTRING (defalt)->data; | |
1615 | } | |
1616 | ||
1617 | /* Now concatenate the directory and name to new space in the stack frame */ | |
1618 | ||
1619 | tlen = (newdir ? strlen (newdir) + 1 : 0) + strlen (nm) + 1; | |
1620 | target = (unsigned char *) alloca (tlen); | |
1621 | *target = 0; | |
1622 | ||
1623 | if (newdir) | |
1624 | { | |
1625 | #ifndef VMS | |
1626 | if (nm[0] == 0 || nm[0] == '/') | |
1627 | strcpy (target, newdir); | |
1628 | else | |
1629 | #endif | |
1630 | file_name_as_directory (target, newdir); | |
1631 | } | |
1632 | ||
1633 | strcat (target, nm); | |
1634 | #ifdef VMS | |
1635 | if (index (target, '/')) | |
1636 | strcpy (target, sys_translate_unix (target)); | |
1637 | #endif /* VMS */ | |
1638 | ||
1639 | /* Now canonicalize by removing /. and /foo/.. if they appear */ | |
1640 | ||
1641 | p = target; | |
1642 | o = target; | |
1643 | ||
1644 | while (*p) | |
1645 | { | |
1646 | #ifdef VMS | |
1647 | if (*p != ']' && *p != '>' && *p != '-') | |
1648 | { | |
1649 | if (*p == '\\') | |
1650 | p++; | |
1651 | *o++ = *p++; | |
1652 | } | |
1653 | else if ((p[0] == ']' || p[0] == '>') && p[0] == p[1] + 2) | |
1654 | /* brackets are offset from each other by 2 */ | |
1655 | { | |
1656 | p += 2; | |
1657 | if (*p != '.' && *p != '-' && o[-1] != '.') | |
1658 | /* convert [foo][bar] to [bar] */ | |
1659 | while (o[-1] != '[' && o[-1] != '<') | |
1660 | o--; | |
1661 | else if (*p == '-' && *o != '.') | |
1662 | *--p = '.'; | |
1663 | } | |
1664 | else if (p[0] == '-' && o[-1] == '.' && | |
1665 | (p[1] == '.' || p[1] == ']' || p[1] == '>')) | |
1666 | /* flush .foo.- ; leave - if stopped by '[' or '<' */ | |
1667 | { | |
1668 | do | |
1669 | o--; | |
1670 | while (o[-1] != '.' && o[-1] != '[' && o[-1] != '<'); | |
5e570b75 | 1671 | if (p[1] == '.') /* foo.-.bar ==> bar. */ |
570d7624 JB |
1672 | p += 2; |
1673 | else if (o[-1] == '.') /* '.foo.-]' ==> ']' */ | |
1674 | p++, o--; | |
1675 | /* else [foo.-] ==> [-] */ | |
1676 | } | |
1677 | else | |
1678 | { | |
1679 | #ifndef VMS4_4 | |
1680 | if (*p == '-' && | |
1681 | o[-1] != '[' && o[-1] != '<' && o[-1] != '.' && | |
1682 | p[1] != ']' && p[1] != '>' && p[1] != '.') | |
1683 | *p = '_'; | |
1684 | #endif /* VMS4_4 */ | |
1685 | *o++ = *p++; | |
1686 | } | |
1687 | #else /* not VMS */ | |
1688 | if (*p != '/') | |
5e570b75 | 1689 | { |
570d7624 JB |
1690 | *o++ = *p++; |
1691 | } | |
1692 | else if (!strncmp (p, "//", 2) | |
1693 | #ifdef APOLLO | |
1694 | /* // at start of filename is meaningful in Apollo system */ | |
1695 | && o != target | |
1696 | #endif /* APOLLO */ | |
1697 | ) | |
1698 | { | |
1699 | o = target; | |
1700 | p++; | |
1701 | } | |
1702 | else if (p[0] == '/' && p[1] == '.' && | |
1703 | (p[2] == '/' || p[2] == 0)) | |
1704 | p += 2; | |
1705 | else if (!strncmp (p, "/..", 3) | |
1706 | /* `/../' is the "superroot" on certain file systems. */ | |
1707 | && o != target | |
1708 | && (p[3] == '/' || p[3] == 0)) | |
1709 | { | |
1710 | while (o != target && *--o != '/') | |
1711 | ; | |
1712 | #ifdef APOLLO | |
1713 | if (o == target + 1 && o[-1] == '/' && o[0] == '/') | |
1714 | ++o; | |
1715 | else | |
1716 | #endif /* APOLLO */ | |
1717 | if (o == target && *o == '/') | |
1718 | ++o; | |
1719 | p += 3; | |
1720 | } | |
1721 | else | |
5e570b75 | 1722 | { |
570d7624 JB |
1723 | *o++ = *p++; |
1724 | } | |
1725 | #endif /* not VMS */ | |
1726 | } | |
1727 | ||
1728 | return make_string (target, o - target); | |
1729 | } | |
1730 | #endif | |
1731 | \f | |
1732 | DEFUN ("substitute-in-file-name", Fsubstitute_in_file_name, | |
1733 | Ssubstitute_in_file_name, 1, 1, 0, | |
1734 | "Substitute environment variables referred to in FILENAME.\n\ | |
1735 | `$FOO' where FOO is an environment variable name means to substitute\n\ | |
1736 | the value of that variable. The variable name should be terminated\n\ | |
1737 | with a character not a letter, digit or underscore; otherwise, enclose\n\ | |
1738 | the entire variable name in braces.\n\ | |
1739 | If `/~' appears, all of FILENAME through that `/' is discarded.\n\n\ | |
1740 | On VMS, `$' substitution is not done; this function does little and only\n\ | |
1741 | duplicates what `expand-file-name' does.") | |
3b7f6e60 EN |
1742 | (filename) |
1743 | Lisp_Object filename; | |
570d7624 JB |
1744 | { |
1745 | unsigned char *nm; | |
1746 | ||
1747 | register unsigned char *s, *p, *o, *x, *endp; | |
1748 | unsigned char *target; | |
1749 | int total = 0; | |
1750 | int substituted = 0; | |
1751 | unsigned char *xnm; | |
8ce069f5 | 1752 | Lisp_Object handler; |
570d7624 | 1753 | |
3b7f6e60 | 1754 | CHECK_STRING (filename, 0); |
570d7624 | 1755 | |
8ce069f5 RS |
1756 | /* If the file name has special constructs in it, |
1757 | call the corresponding file handler. */ | |
3b7f6e60 | 1758 | handler = Ffind_file_name_handler (filename, Qsubstitute_in_file_name); |
8ce069f5 | 1759 | if (!NILP (handler)) |
3b7f6e60 | 1760 | return call2 (handler, Qsubstitute_in_file_name, filename); |
8ce069f5 | 1761 | |
3b7f6e60 | 1762 | nm = XSTRING (filename)->data; |
199607e4 RS |
1763 | #ifdef DOS_NT |
1764 | nm = strcpy (alloca (strlen (nm) + 1), nm); | |
1765 | CORRECT_DIR_SEPS (nm); | |
1766 | substituted = (strcmp (nm, XSTRING (filename)->data) != 0); | |
a5a1cc06 | 1767 | #endif |
3b7f6e60 | 1768 | endp = nm + XSTRING (filename)->size; |
570d7624 JB |
1769 | |
1770 | /* If /~ or // appears, discard everything through first slash. */ | |
1771 | ||
1772 | for (p = nm; p != endp; p++) | |
1773 | { | |
199607e4 RS |
1774 | if ((p[0] == '~' |
1775 | #if defined (APOLLO) || defined (WINDOWSNT) | |
1776 | /* // at start of file name is meaningful in Apollo and | |
1777 | WindowsNT systems */ | |
1778 | || (IS_DIRECTORY_SEP (p[0]) && p - 1 != nm) | |
1779 | #else /* not (APOLLO || WINDOWSNT) */ | |
1780 | || IS_DIRECTORY_SEP (p[0]) | |
1781 | #endif /* not (APOLLO || WINDOWSNT) */ | |
570d7624 | 1782 | ) |
5e570b75 RS |
1783 | && p != nm |
1784 | && (0 | |
570d7624 | 1785 | #ifdef VMS |
5e570b75 | 1786 | || p[-1] == ':' || p[-1] == ']' || p[-1] == '>' |
570d7624 | 1787 | #endif /* VMS */ |
5e570b75 | 1788 | || IS_DIRECTORY_SEP (p[-1]))) |
570d7624 JB |
1789 | { |
1790 | nm = p; | |
1791 | substituted = 1; | |
1792 | } | |
5e570b75 | 1793 | #ifdef DOS_NT |
199607e4 RS |
1794 | /* see comment in expand-file-name about drive specifiers */ |
1795 | else if (IS_DRIVE (p[0]) && p[1] == ':' | |
1796 | && p > nm && IS_DIRECTORY_SEP (p[-1])) | |
4c3c22f3 RS |
1797 | { |
1798 | nm = p; | |
1799 | substituted = 1; | |
1800 | } | |
5e570b75 | 1801 | #endif /* DOS_NT */ |
570d7624 JB |
1802 | } |
1803 | ||
1804 | #ifdef VMS | |
1805 | return build_string (nm); | |
1806 | #else | |
1807 | ||
1808 | /* See if any variables are substituted into the string | |
1809 | and find the total length of their values in `total' */ | |
1810 | ||
1811 | for (p = nm; p != endp;) | |
1812 | if (*p != '$') | |
1813 | p++; | |
1814 | else | |
1815 | { | |
1816 | p++; | |
1817 | if (p == endp) | |
1818 | goto badsubst; | |
1819 | else if (*p == '$') | |
1820 | { | |
1821 | /* "$$" means a single "$" */ | |
1822 | p++; | |
1823 | total -= 1; | |
1824 | substituted = 1; | |
1825 | continue; | |
1826 | } | |
1827 | else if (*p == '{') | |
1828 | { | |
1829 | o = ++p; | |
1830 | while (p != endp && *p != '}') p++; | |
1831 | if (*p != '}') goto missingclose; | |
1832 | s = p; | |
1833 | } | |
1834 | else | |
1835 | { | |
1836 | o = p; | |
1837 | while (p != endp && (isalnum (*p) || *p == '_')) p++; | |
1838 | s = p; | |
1839 | } | |
1840 | ||
1841 | /* Copy out the variable name */ | |
1842 | target = (unsigned char *) alloca (s - o + 1); | |
1843 | strncpy (target, o, s - o); | |
1844 | target[s - o] = 0; | |
5e570b75 | 1845 | #ifdef DOS_NT |
4c3c22f3 | 1846 | strupr (target); /* $home == $HOME etc. */ |
5e570b75 | 1847 | #endif /* DOS_NT */ |
570d7624 JB |
1848 | |
1849 | /* Get variable value */ | |
1850 | o = (unsigned char *) egetenv (target); | |
570d7624 JB |
1851 | if (!o) goto badvar; |
1852 | total += strlen (o); | |
1853 | substituted = 1; | |
1854 | } | |
1855 | ||
1856 | if (!substituted) | |
3b7f6e60 | 1857 | return filename; |
570d7624 JB |
1858 | |
1859 | /* If substitution required, recopy the string and do it */ | |
1860 | /* Make space in stack frame for the new copy */ | |
3b7f6e60 | 1861 | xnm = (unsigned char *) alloca (XSTRING (filename)->size + total + 1); |
570d7624 JB |
1862 | x = xnm; |
1863 | ||
1864 | /* Copy the rest of the name through, replacing $ constructs with values */ | |
1865 | for (p = nm; *p;) | |
1866 | if (*p != '$') | |
1867 | *x++ = *p++; | |
1868 | else | |
1869 | { | |
1870 | p++; | |
1871 | if (p == endp) | |
1872 | goto badsubst; | |
1873 | else if (*p == '$') | |
1874 | { | |
1875 | *x++ = *p++; | |
1876 | continue; | |
1877 | } | |
1878 | else if (*p == '{') | |
1879 | { | |
1880 | o = ++p; | |
1881 | while (p != endp && *p != '}') p++; | |
1882 | if (*p != '}') goto missingclose; | |
1883 | s = p++; | |
1884 | } | |
1885 | else | |
1886 | { | |
1887 | o = p; | |
1888 | while (p != endp && (isalnum (*p) || *p == '_')) p++; | |
1889 | s = p; | |
1890 | } | |
1891 | ||
1892 | /* Copy out the variable name */ | |
1893 | target = (unsigned char *) alloca (s - o + 1); | |
1894 | strncpy (target, o, s - o); | |
1895 | target[s - o] = 0; | |
5e570b75 | 1896 | #ifdef DOS_NT |
4c3c22f3 | 1897 | strupr (target); /* $home == $HOME etc. */ |
5e570b75 | 1898 | #endif /* DOS_NT */ |
570d7624 JB |
1899 | |
1900 | /* Get variable value */ | |
1901 | o = (unsigned char *) egetenv (target); | |
570d7624 JB |
1902 | if (!o) |
1903 | goto badvar; | |
1904 | ||
1905 | strcpy (x, o); | |
1906 | x += strlen (o); | |
1907 | } | |
1908 | ||
1909 | *x = 0; | |
1910 | ||
1911 | /* If /~ or // appears, discard everything through first slash. */ | |
1912 | ||
1913 | for (p = xnm; p != x; p++) | |
5e570b75 | 1914 | if ((p[0] == '~' |
199607e4 | 1915 | #if defined (APOLLO) || defined (WINDOWSNT) |
5e570b75 | 1916 | || (IS_DIRECTORY_SEP (p[0]) && p - 1 != xnm) |
199607e4 RS |
1917 | #else /* not (APOLLO || WINDOWSNT) */ |
1918 | || IS_DIRECTORY_SEP (p[0]) | |
1919 | #endif /* not (APOLLO || WINDOWSNT) */ | |
570d7624 | 1920 | ) |
5e570b75 | 1921 | && p != nm && IS_DIRECTORY_SEP (p[-1])) |
570d7624 | 1922 | xnm = p; |
5e570b75 | 1923 | #ifdef DOS_NT |
199607e4 RS |
1924 | else if (IS_DRIVE (p[0]) && p[1] == ':' |
1925 | && p > nm && IS_DIRECTORY_SEP (p[-1])) | |
1926 | xnm = p; | |
4c3c22f3 | 1927 | #endif |
570d7624 JB |
1928 | |
1929 | return make_string (xnm, x - xnm); | |
1930 | ||
1931 | badsubst: | |
1932 | error ("Bad format environment-variable substitution"); | |
1933 | missingclose: | |
1934 | error ("Missing \"}\" in environment-variable substitution"); | |
1935 | badvar: | |
1936 | error ("Substituting nonexistent environment variable \"%s\"", target); | |
1937 | ||
1938 | /* NOTREACHED */ | |
1939 | #endif /* not VMS */ | |
1940 | } | |
1941 | \f | |
067ffa38 | 1942 | /* A slightly faster and more convenient way to get |
298b760e | 1943 | (directory-file-name (expand-file-name FOO)). */ |
067ffa38 | 1944 | |
570d7624 JB |
1945 | Lisp_Object |
1946 | expand_and_dir_to_file (filename, defdir) | |
1947 | Lisp_Object filename, defdir; | |
1948 | { | |
199607e4 | 1949 | register Lisp_Object absname; |
570d7624 | 1950 | |
199607e4 | 1951 | absname = Fexpand_file_name (filename, defdir); |
570d7624 JB |
1952 | #ifdef VMS |
1953 | { | |
199607e4 | 1954 | register int c = XSTRING (absname)->data[XSTRING (absname)->size - 1]; |
570d7624 | 1955 | if (c == ':' || c == ']' || c == '>') |
199607e4 | 1956 | absname = Fdirectory_file_name (absname); |
570d7624 JB |
1957 | } |
1958 | #else | |
199607e4 | 1959 | /* Remove final slash, if any (unless this is the root dir). |
570d7624 | 1960 | stat behaves differently depending! */ |
199607e4 RS |
1961 | if (XSTRING (absname)->size > 1 |
1962 | && IS_DIRECTORY_SEP (XSTRING (absname)->data[XSTRING (absname)->size - 1]) | |
1963 | && !IS_DEVICE_SEP (XSTRING (absname)->data[XSTRING (absname)->size-2])) | |
ddc61f46 | 1964 | /* We cannot take shortcuts; they might be wrong for magic file names. */ |
199607e4 | 1965 | absname = Fdirectory_file_name (absname); |
570d7624 | 1966 | #endif |
199607e4 | 1967 | return absname; |
570d7624 JB |
1968 | } |
1969 | \f | |
3ed15d97 RS |
1970 | /* Signal an error if the file ABSNAME already exists. |
1971 | If INTERACTIVE is nonzero, ask the user whether to proceed, | |
1972 | and bypass the error if the user says to go ahead. | |
1973 | QUERYSTRING is a name for the action that is being considered | |
1974 | to alter the file. | |
1975 | *STATPTR is used to store the stat information if the file exists. | |
1976 | If the file does not exist, STATPTR->st_mode is set to 0. */ | |
1977 | ||
c4df73f9 | 1978 | void |
3ed15d97 | 1979 | barf_or_query_if_file_exists (absname, querystring, interactive, statptr) |
570d7624 JB |
1980 | Lisp_Object absname; |
1981 | unsigned char *querystring; | |
1982 | int interactive; | |
3ed15d97 | 1983 | struct stat *statptr; |
570d7624 JB |
1984 | { |
1985 | register Lisp_Object tem; | |
4018b5ef | 1986 | struct stat statbuf; |
570d7624 JB |
1987 | struct gcpro gcpro1; |
1988 | ||
4018b5ef RS |
1989 | /* stat is a good way to tell whether the file exists, |
1990 | regardless of what access permissions it has. */ | |
1991 | if (stat (XSTRING (absname)->data, &statbuf) >= 0) | |
570d7624 JB |
1992 | { |
1993 | if (! interactive) | |
1994 | Fsignal (Qfile_already_exists, | |
1995 | Fcons (build_string ("File already exists"), | |
1996 | Fcons (absname, Qnil))); | |
1997 | GCPRO1 (absname); | |
1998 | tem = do_yes_or_no_p (format1 ("File %s already exists; %s anyway? ", | |
1999 | XSTRING (absname)->data, querystring)); | |
2000 | UNGCPRO; | |
265a9e55 | 2001 | if (NILP (tem)) |
570d7624 JB |
2002 | Fsignal (Qfile_already_exists, |
2003 | Fcons (build_string ("File already exists"), | |
2004 | Fcons (absname, Qnil))); | |
3ed15d97 RS |
2005 | if (statptr) |
2006 | *statptr = statbuf; | |
2007 | } | |
2008 | else | |
2009 | { | |
2010 | if (statptr) | |
2011 | statptr->st_mode = 0; | |
570d7624 JB |
2012 | } |
2013 | return; | |
2014 | } | |
2015 | ||
2016 | DEFUN ("copy-file", Fcopy_file, Scopy_file, 2, 4, | |
349a7710 | 2017 | "fCopy file: \nFCopy %s to file: \np\nP", |
570d7624 JB |
2018 | "Copy FILE to NEWNAME. Both args must be strings.\n\ |
2019 | Signals a `file-already-exists' error if file NEWNAME already exists,\n\ | |
2020 | unless a third argument OK-IF-ALREADY-EXISTS is supplied and non-nil.\n\ | |
2021 | A number as third arg means request confirmation if NEWNAME already exists.\n\ | |
2022 | This is what happens in interactive use with M-x.\n\ | |
349a7710 JB |
2023 | Fourth arg KEEP-TIME non-nil means give the new file the same\n\ |
2024 | last-modified time as the old one. (This works on only some systems.)\n\ | |
2025 | A prefix arg makes KEEP-TIME non-nil.") | |
3b7f6e60 EN |
2026 | (file, newname, ok_if_already_exists, keep_date) |
2027 | Lisp_Object file, newname, ok_if_already_exists, keep_date; | |
570d7624 JB |
2028 | { |
2029 | int ifd, ofd, n; | |
2030 | char buf[16 * 1024]; | |
3ed15d97 | 2031 | struct stat st, out_st; |
32f4334d | 2032 | Lisp_Object handler; |
570d7624 | 2033 | struct gcpro gcpro1, gcpro2; |
b5148e85 | 2034 | int count = specpdl_ptr - specpdl; |
f73b0ada | 2035 | int input_file_statable_p; |
570d7624 | 2036 | |
3b7f6e60 EN |
2037 | GCPRO2 (file, newname); |
2038 | CHECK_STRING (file, 0); | |
570d7624 | 2039 | CHECK_STRING (newname, 1); |
3b7f6e60 | 2040 | file = Fexpand_file_name (file, Qnil); |
570d7624 | 2041 | newname = Fexpand_file_name (newname, Qnil); |
32f4334d | 2042 | |
0bf2eed2 | 2043 | /* If the input file name has special constructs in it, |
32f4334d | 2044 | call the corresponding file handler. */ |
3b7f6e60 | 2045 | handler = Ffind_file_name_handler (file, Qcopy_file); |
0bf2eed2 | 2046 | /* Likewise for output file name. */ |
51cf6d37 | 2047 | if (NILP (handler)) |
49307295 | 2048 | handler = Ffind_file_name_handler (newname, Qcopy_file); |
32f4334d | 2049 | if (!NILP (handler)) |
3b7f6e60 | 2050 | RETURN_UNGCPRO (call5 (handler, Qcopy_file, file, newname, |
36712b0a | 2051 | ok_if_already_exists, keep_date)); |
32f4334d | 2052 | |
265a9e55 | 2053 | if (NILP (ok_if_already_exists) |
93c30b5f | 2054 | || INTEGERP (ok_if_already_exists)) |
570d7624 | 2055 | barf_or_query_if_file_exists (newname, "copy to it", |
3ed15d97 RS |
2056 | INTEGERP (ok_if_already_exists), &out_st); |
2057 | else if (stat (XSTRING (newname)->data, &out_st) < 0) | |
2058 | out_st.st_mode = 0; | |
570d7624 | 2059 | |
3b7f6e60 | 2060 | ifd = open (XSTRING (file)->data, O_RDONLY); |
570d7624 | 2061 | if (ifd < 0) |
3b7f6e60 | 2062 | report_file_error ("Opening input file", Fcons (file, Qnil)); |
570d7624 | 2063 | |
b5148e85 RS |
2064 | record_unwind_protect (close_file_unwind, make_number (ifd)); |
2065 | ||
f73b0ada BF |
2066 | /* We can only copy regular files and symbolic links. Other files are not |
2067 | copyable by us. */ | |
2068 | input_file_statable_p = (fstat (ifd, &st) >= 0); | |
2069 | ||
199607e4 | 2070 | #ifndef MSDOS |
3ed15d97 RS |
2071 | if (out_st.st_mode != 0 |
2072 | && st.st_dev == out_st.st_dev && st.st_ino == out_st.st_ino) | |
2073 | { | |
2074 | errno = 0; | |
2075 | report_file_error ("Input and output files are the same", | |
3b7f6e60 | 2076 | Fcons (file, Fcons (newname, Qnil))); |
3ed15d97 RS |
2077 | } |
2078 | #endif | |
2079 | ||
f73b0ada BF |
2080 | #if defined (S_ISREG) && defined (S_ISLNK) |
2081 | if (input_file_statable_p) | |
2082 | { | |
2083 | if (!(S_ISREG (st.st_mode)) && !(S_ISLNK (st.st_mode))) | |
2084 | { | |
2085 | #if defined (EISDIR) | |
2086 | /* Get a better looking error message. */ | |
2087 | errno = EISDIR; | |
2088 | #endif /* EISDIR */ | |
3b7f6e60 | 2089 | report_file_error ("Non-regular file", Fcons (file, Qnil)); |
f73b0ada BF |
2090 | } |
2091 | } | |
2092 | #endif /* S_ISREG && S_ISLNK */ | |
2093 | ||
570d7624 JB |
2094 | #ifdef VMS |
2095 | /* Create the copy file with the same record format as the input file */ | |
2096 | ofd = sys_creat (XSTRING (newname)->data, 0666, ifd); | |
2097 | #else | |
4c3c22f3 RS |
2098 | #ifdef MSDOS |
2099 | /* System's default file type was set to binary by _fmode in emacs.c. */ | |
2100 | ofd = creat (XSTRING (newname)->data, S_IREAD | S_IWRITE); | |
2101 | #else /* not MSDOS */ | |
570d7624 | 2102 | ofd = creat (XSTRING (newname)->data, 0666); |
4c3c22f3 | 2103 | #endif /* not MSDOS */ |
570d7624 JB |
2104 | #endif /* VMS */ |
2105 | if (ofd < 0) | |
3ed15d97 | 2106 | report_file_error ("Opening output file", Fcons (newname, Qnil)); |
b5148e85 RS |
2107 | |
2108 | record_unwind_protect (close_file_unwind, make_number (ofd)); | |
570d7624 | 2109 | |
b5148e85 RS |
2110 | immediate_quit = 1; |
2111 | QUIT; | |
570d7624 JB |
2112 | while ((n = read (ifd, buf, sizeof buf)) > 0) |
2113 | if (write (ofd, buf, n) != n) | |
3ed15d97 | 2114 | report_file_error ("I/O error", Fcons (newname, Qnil)); |
b5148e85 | 2115 | immediate_quit = 0; |
570d7624 | 2116 | |
5acac34e RS |
2117 | /* Closing the output clobbers the file times on some systems. */ |
2118 | if (close (ofd) < 0) | |
2119 | report_file_error ("I/O error", Fcons (newname, Qnil)); | |
2120 | ||
f73b0ada | 2121 | if (input_file_statable_p) |
570d7624 | 2122 | { |
265a9e55 | 2123 | if (!NILP (keep_date)) |
570d7624 | 2124 | { |
de5bf5d3 JB |
2125 | EMACS_TIME atime, mtime; |
2126 | EMACS_SET_SECS_USECS (atime, st.st_atime, 0); | |
2127 | EMACS_SET_SECS_USECS (mtime, st.st_mtime, 0); | |
d6303611 KH |
2128 | if (set_file_times (XSTRING (newname)->data, atime, mtime)) |
2129 | report_file_error ("I/O error", Fcons (newname, Qnil)); | |
570d7624 | 2130 | } |
2dc3be7e RS |
2131 | #ifndef MSDOS |
2132 | chmod (XSTRING (newname)->data, st.st_mode & 07777); | |
2133 | #else /* MSDOS */ | |
2134 | #if defined (__DJGPP__) && __DJGPP__ > 1 | |
2135 | /* In DJGPP v2.0 and later, fstat usually returns true file mode bits, | |
2136 | and if it can't, it tells so. Otherwise, under MSDOS we usually | |
2137 | get only the READ bit, which will make the copied file read-only, | |
2138 | so it's better not to chmod at all. */ | |
2139 | if ((_djstat_flags & _STFAIL_WRITEBIT) == 0) | |
de5bf5d3 | 2140 | chmod (XSTRING (newname)->data, st.st_mode & 07777); |
2dc3be7e RS |
2141 | #endif /* DJGPP version 2 or newer */ |
2142 | #endif /* MSDOS */ | |
570d7624 JB |
2143 | } |
2144 | ||
5acac34e RS |
2145 | close (ifd); |
2146 | ||
b5148e85 RS |
2147 | /* Discard the unwind protects. */ |
2148 | specpdl_ptr = specpdl + count; | |
2149 | ||
570d7624 JB |
2150 | UNGCPRO; |
2151 | return Qnil; | |
2152 | } | |
385b6cc7 | 2153 | \f |
9bbe01fb | 2154 | DEFUN ("make-directory-internal", Fmake_directory_internal, |
353cfc19 | 2155 | Smake_directory_internal, 1, 1, 0, |
3b7f6e60 EN |
2156 | "Create a new directory named DIRECTORY.") |
2157 | (directory) | |
2158 | Lisp_Object directory; | |
570d7624 JB |
2159 | { |
2160 | unsigned char *dir; | |
32f4334d | 2161 | Lisp_Object handler; |
570d7624 | 2162 | |
3b7f6e60 EN |
2163 | CHECK_STRING (directory, 0); |
2164 | directory = Fexpand_file_name (directory, Qnil); | |
32f4334d | 2165 | |
3b7f6e60 | 2166 | handler = Ffind_file_name_handler (directory, Qmake_directory_internal); |
32f4334d | 2167 | if (!NILP (handler)) |
3b7f6e60 | 2168 | return call2 (handler, Qmake_directory_internal, directory); |
9bbe01fb | 2169 | |
3b7f6e60 | 2170 | dir = XSTRING (directory)->data; |
570d7624 | 2171 | |
5e570b75 RS |
2172 | #ifdef WINDOWSNT |
2173 | if (mkdir (dir) != 0) | |
2174 | #else | |
570d7624 | 2175 | if (mkdir (dir, 0777) != 0) |
5e570b75 | 2176 | #endif |
3b7f6e60 | 2177 | report_file_error ("Creating directory", Flist (1, &directory)); |
570d7624 | 2178 | |
32f4334d | 2179 | return Qnil; |
570d7624 JB |
2180 | } |
2181 | ||
aa734e17 | 2182 | DEFUN ("delete-directory", Fdelete_directory, Sdelete_directory, 1, 1, "FDelete directory: ", |
3b7f6e60 EN |
2183 | "Delete the directory named DIRECTORY.") |
2184 | (directory) | |
2185 | Lisp_Object directory; | |
570d7624 JB |
2186 | { |
2187 | unsigned char *dir; | |
32f4334d | 2188 | Lisp_Object handler; |
570d7624 | 2189 | |
3b7f6e60 EN |
2190 | CHECK_STRING (directory, 0); |
2191 | directory = Fdirectory_file_name (Fexpand_file_name (directory, Qnil)); | |
2192 | dir = XSTRING (directory)->data; | |
570d7624 | 2193 | |
3b7f6e60 | 2194 | handler = Ffind_file_name_handler (directory, Qdelete_directory); |
32f4334d | 2195 | if (!NILP (handler)) |
3b7f6e60 | 2196 | return call2 (handler, Qdelete_directory, directory); |
32f4334d | 2197 | |
570d7624 | 2198 | if (rmdir (dir) != 0) |
3b7f6e60 | 2199 | report_file_error ("Removing directory", Flist (1, &directory)); |
570d7624 JB |
2200 | |
2201 | return Qnil; | |
2202 | } | |
2203 | ||
2204 | DEFUN ("delete-file", Fdelete_file, Sdelete_file, 1, 1, "fDelete file: ", | |
3b7f6e60 | 2205 | "Delete file named FILENAME.\n\ |
570d7624 JB |
2206 | If file has multiple names, it continues to exist with the other names.") |
2207 | (filename) | |
2208 | Lisp_Object filename; | |
2209 | { | |
32f4334d | 2210 | Lisp_Object handler; |
570d7624 JB |
2211 | CHECK_STRING (filename, 0); |
2212 | filename = Fexpand_file_name (filename, Qnil); | |
32f4334d | 2213 | |
49307295 | 2214 | handler = Ffind_file_name_handler (filename, Qdelete_file); |
32f4334d | 2215 | if (!NILP (handler)) |
8a9b0da9 | 2216 | return call2 (handler, Qdelete_file, filename); |
32f4334d | 2217 | |
570d7624 JB |
2218 | if (0 > unlink (XSTRING (filename)->data)) |
2219 | report_file_error ("Removing old name", Flist (1, &filename)); | |
8a9b0da9 | 2220 | return Qnil; |
570d7624 JB |
2221 | } |
2222 | ||
385b6cc7 RS |
2223 | static Lisp_Object |
2224 | internal_delete_file_1 (ignore) | |
2225 | Lisp_Object ignore; | |
2226 | { | |
2227 | return Qt; | |
2228 | } | |
2229 | ||
2230 | /* Delete file FILENAME, returning 1 if successful and 0 if failed. */ | |
2231 | ||
2232 | int | |
2233 | internal_delete_file (filename) | |
2234 | Lisp_Object filename; | |
2235 | { | |
2236 | return NILP (internal_condition_case_1 (Fdelete_file, filename, | |
2237 | Qt, internal_delete_file_1)); | |
2238 | } | |
2239 | \f | |
570d7624 JB |
2240 | DEFUN ("rename-file", Frename_file, Srename_file, 2, 3, |
2241 | "fRename file: \nFRename %s to file: \np", | |
2242 | "Rename FILE as NEWNAME. Both args strings.\n\ | |
2243 | If file has names other than FILE, it continues to have those names.\n\ | |
2244 | Signals a `file-already-exists' error if a file NEWNAME already exists\n\ | |
2245 | unless optional third argument OK-IF-ALREADY-EXISTS is non-nil.\n\ | |
2246 | A number as third arg means request confirmation if NEWNAME already exists.\n\ | |
2247 | This is what happens in interactive use with M-x.") | |
3b7f6e60 EN |
2248 | (file, newname, ok_if_already_exists) |
2249 | Lisp_Object file, newname, ok_if_already_exists; | |
570d7624 JB |
2250 | { |
2251 | #ifdef NO_ARG_ARRAY | |
2252 | Lisp_Object args[2]; | |
2253 | #endif | |
32f4334d | 2254 | Lisp_Object handler; |
570d7624 JB |
2255 | struct gcpro gcpro1, gcpro2; |
2256 | ||
3b7f6e60 EN |
2257 | GCPRO2 (file, newname); |
2258 | CHECK_STRING (file, 0); | |
570d7624 | 2259 | CHECK_STRING (newname, 1); |
3b7f6e60 | 2260 | file = Fexpand_file_name (file, Qnil); |
570d7624 | 2261 | newname = Fexpand_file_name (newname, Qnil); |
32f4334d RS |
2262 | |
2263 | /* If the file name has special constructs in it, | |
2264 | call the corresponding file handler. */ | |
3b7f6e60 | 2265 | handler = Ffind_file_name_handler (file, Qrename_file); |
51cf6d37 | 2266 | if (NILP (handler)) |
49307295 | 2267 | handler = Ffind_file_name_handler (newname, Qrename_file); |
32f4334d | 2268 | if (!NILP (handler)) |
36712b0a | 2269 | RETURN_UNGCPRO (call4 (handler, Qrename_file, |
3b7f6e60 | 2270 | file, newname, ok_if_already_exists)); |
32f4334d | 2271 | |
265a9e55 | 2272 | if (NILP (ok_if_already_exists) |
93c30b5f | 2273 | || INTEGERP (ok_if_already_exists)) |
570d7624 | 2274 | barf_or_query_if_file_exists (newname, "rename to it", |
3ed15d97 | 2275 | INTEGERP (ok_if_already_exists), 0); |
570d7624 | 2276 | #ifndef BSD4_1 |
3b7f6e60 | 2277 | if (0 > rename (XSTRING (file)->data, XSTRING (newname)->data)) |
570d7624 | 2278 | #else |
3b7f6e60 EN |
2279 | if (0 > link (XSTRING (file)->data, XSTRING (newname)->data) |
2280 | || 0 > unlink (XSTRING (file)->data)) | |
570d7624 JB |
2281 | #endif |
2282 | { | |
2283 | if (errno == EXDEV) | |
2284 | { | |
3b7f6e60 | 2285 | Fcopy_file (file, newname, |
d093c3ac RM |
2286 | /* We have already prompted if it was an integer, |
2287 | so don't have copy-file prompt again. */ | |
2288 | NILP (ok_if_already_exists) ? Qnil : Qt, Qt); | |
3b7f6e60 | 2289 | Fdelete_file (file); |
570d7624 JB |
2290 | } |
2291 | else | |
2292 | #ifdef NO_ARG_ARRAY | |
2293 | { | |
3b7f6e60 | 2294 | args[0] = file; |
570d7624 JB |
2295 | args[1] = newname; |
2296 | report_file_error ("Renaming", Flist (2, args)); | |
2297 | } | |
2298 | #else | |
3b7f6e60 | 2299 | report_file_error ("Renaming", Flist (2, &file)); |
570d7624 JB |
2300 | #endif |
2301 | } | |
2302 | UNGCPRO; | |
2303 | return Qnil; | |
2304 | } | |
2305 | ||
2306 | DEFUN ("add-name-to-file", Fadd_name_to_file, Sadd_name_to_file, 2, 3, | |
2307 | "fAdd name to file: \nFName to add to %s: \np", | |
2308 | "Give FILE additional name NEWNAME. Both args strings.\n\ | |
2309 | Signals a `file-already-exists' error if a file NEWNAME already exists\n\ | |
2310 | unless optional third argument OK-IF-ALREADY-EXISTS is non-nil.\n\ | |
2311 | A number as third arg means request confirmation if NEWNAME already exists.\n\ | |
2312 | This is what happens in interactive use with M-x.") | |
3b7f6e60 EN |
2313 | (file, newname, ok_if_already_exists) |
2314 | Lisp_Object file, newname, ok_if_already_exists; | |
570d7624 JB |
2315 | { |
2316 | #ifdef NO_ARG_ARRAY | |
2317 | Lisp_Object args[2]; | |
2318 | #endif | |
32f4334d | 2319 | Lisp_Object handler; |
570d7624 JB |
2320 | struct gcpro gcpro1, gcpro2; |
2321 | ||
3b7f6e60 EN |
2322 | GCPRO2 (file, newname); |
2323 | CHECK_STRING (file, 0); | |
570d7624 | 2324 | CHECK_STRING (newname, 1); |
3b7f6e60 | 2325 | file = Fexpand_file_name (file, Qnil); |
570d7624 | 2326 | newname = Fexpand_file_name (newname, Qnil); |
32f4334d RS |
2327 | |
2328 | /* If the file name has special constructs in it, | |
2329 | call the corresponding file handler. */ | |
3b7f6e60 | 2330 | handler = Ffind_file_name_handler (file, Qadd_name_to_file); |
32f4334d | 2331 | if (!NILP (handler)) |
3b7f6e60 | 2332 | RETURN_UNGCPRO (call4 (handler, Qadd_name_to_file, file, |
36712b0a | 2333 | newname, ok_if_already_exists)); |
32f4334d | 2334 | |
adc6741c RS |
2335 | /* If the new name has special constructs in it, |
2336 | call the corresponding file handler. */ | |
2337 | handler = Ffind_file_name_handler (newname, Qadd_name_to_file); | |
2338 | if (!NILP (handler)) | |
3b7f6e60 | 2339 | RETURN_UNGCPRO (call4 (handler, Qadd_name_to_file, file, |
adc6741c RS |
2340 | newname, ok_if_already_exists)); |
2341 | ||
265a9e55 | 2342 | if (NILP (ok_if_already_exists) |
93c30b5f | 2343 | || INTEGERP (ok_if_already_exists)) |
570d7624 | 2344 | barf_or_query_if_file_exists (newname, "make it a new name", |
3ed15d97 | 2345 | INTEGERP (ok_if_already_exists), 0); |
5e570b75 RS |
2346 | #ifdef WINDOWSNT |
2347 | /* Windows does not support this operation. */ | |
3b7f6e60 | 2348 | report_file_error ("Adding new name", Flist (2, &file)); |
5e570b75 RS |
2349 | #else /* not WINDOWSNT */ |
2350 | ||
570d7624 | 2351 | unlink (XSTRING (newname)->data); |
3b7f6e60 | 2352 | if (0 > link (XSTRING (file)->data, XSTRING (newname)->data)) |
570d7624 JB |
2353 | { |
2354 | #ifdef NO_ARG_ARRAY | |
3b7f6e60 | 2355 | args[0] = file; |
570d7624 JB |
2356 | args[1] = newname; |
2357 | report_file_error ("Adding new name", Flist (2, args)); | |
2358 | #else | |
3b7f6e60 | 2359 | report_file_error ("Adding new name", Flist (2, &file)); |
570d7624 JB |
2360 | #endif |
2361 | } | |
5e570b75 | 2362 | #endif /* not WINDOWSNT */ |
570d7624 JB |
2363 | |
2364 | UNGCPRO; | |
2365 | return Qnil; | |
2366 | } | |
2367 | ||
2368 | #ifdef S_IFLNK | |
2369 | DEFUN ("make-symbolic-link", Fmake_symbolic_link, Smake_symbolic_link, 2, 3, | |
2370 | "FMake symbolic link to file: \nFMake symbolic link to file %s: \np", | |
2371 | "Make a symbolic link to FILENAME, named LINKNAME. Both args strings.\n\ | |
11183104 | 2372 | Signals a `file-already-exists' error if a file LINKNAME already exists\n\ |
570d7624 | 2373 | unless optional third argument OK-IF-ALREADY-EXISTS is non-nil.\n\ |
11183104 | 2374 | A number as third arg means request confirmation if LINKNAME already exists.\n\ |
570d7624 | 2375 | This happens for interactive use with M-x.") |
e5d77022 JB |
2376 | (filename, linkname, ok_if_already_exists) |
2377 | Lisp_Object filename, linkname, ok_if_already_exists; | |
570d7624 JB |
2378 | { |
2379 | #ifdef NO_ARG_ARRAY | |
2380 | Lisp_Object args[2]; | |
2381 | #endif | |
32f4334d | 2382 | Lisp_Object handler; |
570d7624 JB |
2383 | struct gcpro gcpro1, gcpro2; |
2384 | ||
e5d77022 | 2385 | GCPRO2 (filename, linkname); |
570d7624 | 2386 | CHECK_STRING (filename, 0); |
e5d77022 | 2387 | CHECK_STRING (linkname, 1); |
d9bc1c99 RS |
2388 | /* If the link target has a ~, we must expand it to get |
2389 | a truly valid file name. Otherwise, do not expand; | |
2390 | we want to permit links to relative file names. */ | |
2391 | if (XSTRING (filename)->data[0] == '~') | |
2392 | filename = Fexpand_file_name (filename, Qnil); | |
e5d77022 | 2393 | linkname = Fexpand_file_name (linkname, Qnil); |
32f4334d RS |
2394 | |
2395 | /* If the file name has special constructs in it, | |
2396 | call the corresponding file handler. */ | |
49307295 | 2397 | handler = Ffind_file_name_handler (filename, Qmake_symbolic_link); |
32f4334d | 2398 | if (!NILP (handler)) |
36712b0a KH |
2399 | RETURN_UNGCPRO (call4 (handler, Qmake_symbolic_link, filename, |
2400 | linkname, ok_if_already_exists)); | |
32f4334d | 2401 | |
adc6741c RS |
2402 | /* If the new link name has special constructs in it, |
2403 | call the corresponding file handler. */ | |
2404 | handler = Ffind_file_name_handler (linkname, Qmake_symbolic_link); | |
2405 | if (!NILP (handler)) | |
2406 | RETURN_UNGCPRO (call4 (handler, Qmake_symbolic_link, filename, | |
2407 | linkname, ok_if_already_exists)); | |
2408 | ||
265a9e55 | 2409 | if (NILP (ok_if_already_exists) |
93c30b5f | 2410 | || INTEGERP (ok_if_already_exists)) |
e5d77022 | 2411 | barf_or_query_if_file_exists (linkname, "make it a link", |
3ed15d97 | 2412 | INTEGERP (ok_if_already_exists), 0); |
e5d77022 | 2413 | if (0 > symlink (XSTRING (filename)->data, XSTRING (linkname)->data)) |
570d7624 JB |
2414 | { |
2415 | /* If we didn't complain already, silently delete existing file. */ | |
2416 | if (errno == EEXIST) | |
2417 | { | |
9083124b | 2418 | unlink (XSTRING (linkname)->data); |
e5d77022 | 2419 | if (0 <= symlink (XSTRING (filename)->data, XSTRING (linkname)->data)) |
1a04498e KH |
2420 | { |
2421 | UNGCPRO; | |
2422 | return Qnil; | |
2423 | } | |
570d7624 JB |
2424 | } |
2425 | ||
2426 | #ifdef NO_ARG_ARRAY | |
2427 | args[0] = filename; | |
e5d77022 | 2428 | args[1] = linkname; |
570d7624 JB |
2429 | report_file_error ("Making symbolic link", Flist (2, args)); |
2430 | #else | |
2431 | report_file_error ("Making symbolic link", Flist (2, &filename)); | |
2432 | #endif | |
2433 | } | |
2434 | UNGCPRO; | |
2435 | return Qnil; | |
2436 | } | |
2437 | #endif /* S_IFLNK */ | |
2438 | ||
2439 | #ifdef VMS | |
2440 | ||
2441 | DEFUN ("define-logical-name", Fdefine_logical_name, Sdefine_logical_name, | |
2442 | 2, 2, "sDefine logical name: \nsDefine logical name %s as: ", | |
2443 | "Define the job-wide logical name NAME to have the value STRING.\n\ | |
2444 | If STRING is nil or a null string, the logical name NAME is deleted.") | |
3b7f6e60 EN |
2445 | (name, string) |
2446 | Lisp_Object name; | |
570d7624 JB |
2447 | Lisp_Object string; |
2448 | { | |
3b7f6e60 | 2449 | CHECK_STRING (name, 0); |
265a9e55 | 2450 | if (NILP (string)) |
3b7f6e60 | 2451 | delete_logical_name (XSTRING (name)->data); |
570d7624 JB |
2452 | else |
2453 | { | |
2454 | CHECK_STRING (string, 1); | |
2455 | ||
2456 | if (XSTRING (string)->size == 0) | |
3b7f6e60 | 2457 | delete_logical_name (XSTRING (name)->data); |
570d7624 | 2458 | else |
3b7f6e60 | 2459 | define_logical_name (XSTRING (name)->data, XSTRING (string)->data); |
570d7624 JB |
2460 | } |
2461 | ||
2462 | return string; | |
2463 | } | |
2464 | #endif /* VMS */ | |
2465 | ||
2466 | #ifdef HPUX_NET | |
2467 | ||
2468 | DEFUN ("sysnetunam", Fsysnetunam, Ssysnetunam, 2, 2, 0, | |
2469 | "Open a network connection to PATH using LOGIN as the login string.") | |
2470 | (path, login) | |
2471 | Lisp_Object path, login; | |
2472 | { | |
2473 | int netresult; | |
199607e4 | 2474 | |
570d7624 | 2475 | CHECK_STRING (path, 0); |
199607e4 RS |
2476 | CHECK_STRING (login, 0); |
2477 | ||
570d7624 JB |
2478 | netresult = netunam (XSTRING (path)->data, XSTRING (login)->data); |
2479 | ||
2480 | if (netresult == -1) | |
2481 | return Qnil; | |
2482 | else | |
2483 | return Qt; | |
2484 | } | |
2485 | #endif /* HPUX_NET */ | |
2486 | \f | |
2487 | DEFUN ("file-name-absolute-p", Ffile_name_absolute_p, Sfile_name_absolute_p, | |
2488 | 1, 1, 0, | |
199607e4 | 2489 | "Return t if file FILENAME specifies an absolute file name.\n\ |
570d7624 JB |
2490 | On Unix, this is a name starting with a `/' or a `~'.") |
2491 | (filename) | |
2492 | Lisp_Object filename; | |
2493 | { | |
2494 | unsigned char *ptr; | |
2495 | ||
2496 | CHECK_STRING (filename, 0); | |
2497 | ptr = XSTRING (filename)->data; | |
5e570b75 | 2498 | if (IS_DIRECTORY_SEP (*ptr) || *ptr == '~' |
570d7624 JB |
2499 | #ifdef VMS |
2500 | /* ??? This criterion is probably wrong for '<'. */ | |
2501 | || index (ptr, ':') || index (ptr, '<') | |
2502 | || (*ptr == '[' && (ptr[1] != '-' || (ptr[2] != '.' && ptr[2] != ']')) | |
2503 | && ptr[1] != '.') | |
2504 | #endif /* VMS */ | |
5e570b75 | 2505 | #ifdef DOS_NT |
199607e4 | 2506 | || (IS_DRIVE (*ptr) && ptr[1] == ':' && IS_DIRECTORY_SEP (ptr[2])) |
4c3c22f3 | 2507 | #endif |
570d7624 JB |
2508 | ) |
2509 | return Qt; | |
2510 | else | |
2511 | return Qnil; | |
2512 | } | |
3beeedfe RS |
2513 | \f |
2514 | /* Return nonzero if file FILENAME exists and can be executed. */ | |
2515 | ||
2516 | static int | |
2517 | check_executable (filename) | |
2518 | char *filename; | |
2519 | { | |
3be3c08e RS |
2520 | #ifdef DOS_NT |
2521 | int len = strlen (filename); | |
2522 | char *suffix; | |
2523 | struct stat st; | |
2524 | if (stat (filename, &st) < 0) | |
2525 | return 0; | |
199607e4 RS |
2526 | #ifdef WINDOWSNT |
2527 | return ((st.st_mode & S_IEXEC) != 0); | |
2528 | #else | |
3be3c08e RS |
2529 | return (S_ISREG (st.st_mode) |
2530 | && len >= 5 | |
2531 | && (stricmp ((suffix = filename + len-4), ".com") == 0 | |
2532 | || stricmp (suffix, ".exe") == 0 | |
2dc3be7e RS |
2533 | || stricmp (suffix, ".bat") == 0) |
2534 | || (st.st_mode & S_IFMT) == S_IFDIR); | |
199607e4 | 2535 | #endif /* not WINDOWSNT */ |
3be3c08e | 2536 | #else /* not DOS_NT */ |
fcd2fe41 | 2537 | #ifdef HAVE_EACCESS |
b2728f4b | 2538 | return (eaccess (filename, 1) >= 0); |
3beeedfe RS |
2539 | #else |
2540 | /* Access isn't quite right because it uses the real uid | |
2541 | and we really want to test with the effective uid. | |
2542 | But Unix doesn't give us a right way to do it. */ | |
2543 | return (access (filename, 1) >= 0); | |
2544 | #endif | |
3be3c08e | 2545 | #endif /* not DOS_NT */ |
3beeedfe RS |
2546 | } |
2547 | ||
2548 | /* Return nonzero if file FILENAME exists and can be written. */ | |
2549 | ||
2550 | static int | |
2551 | check_writable (filename) | |
2552 | char *filename; | |
2553 | { | |
3be3c08e RS |
2554 | #ifdef MSDOS |
2555 | struct stat st; | |
2556 | if (stat (filename, &st) < 0) | |
2557 | return 0; | |
2558 | return (st.st_mode & S_IWRITE || (st.st_mode & S_IFMT) == S_IFDIR); | |
2559 | #else /* not MSDOS */ | |
fcd2fe41 | 2560 | #ifdef HAVE_EACCESS |
b2728f4b | 2561 | return (eaccess (filename, 2) >= 0); |
3beeedfe RS |
2562 | #else |
2563 | /* Access isn't quite right because it uses the real uid | |
2564 | and we really want to test with the effective uid. | |
2565 | But Unix doesn't give us a right way to do it. | |
2566 | Opening with O_WRONLY could work for an ordinary file, | |
2567 | but would lose for directories. */ | |
2568 | return (access (filename, 2) >= 0); | |
2569 | #endif | |
3be3c08e | 2570 | #endif /* not MSDOS */ |
3beeedfe | 2571 | } |
570d7624 JB |
2572 | |
2573 | DEFUN ("file-exists-p", Ffile_exists_p, Sfile_exists_p, 1, 1, 0, | |
2574 | "Return t if file FILENAME exists. (This does not mean you can read it.)\n\ | |
2575 | See also `file-readable-p' and `file-attributes'.") | |
2576 | (filename) | |
2577 | Lisp_Object filename; | |
2578 | { | |
199607e4 | 2579 | Lisp_Object absname; |
32f4334d | 2580 | Lisp_Object handler; |
4018b5ef | 2581 | struct stat statbuf; |
570d7624 JB |
2582 | |
2583 | CHECK_STRING (filename, 0); | |
199607e4 | 2584 | absname = Fexpand_file_name (filename, Qnil); |
32f4334d RS |
2585 | |
2586 | /* If the file name has special constructs in it, | |
2587 | call the corresponding file handler. */ | |
199607e4 | 2588 | handler = Ffind_file_name_handler (absname, Qfile_exists_p); |
32f4334d | 2589 | if (!NILP (handler)) |
199607e4 | 2590 | return call2 (handler, Qfile_exists_p, absname); |
32f4334d | 2591 | |
199607e4 | 2592 | return (stat (XSTRING (absname)->data, &statbuf) >= 0) ? Qt : Qnil; |
570d7624 JB |
2593 | } |
2594 | ||
2595 | DEFUN ("file-executable-p", Ffile_executable_p, Sfile_executable_p, 1, 1, 0, | |
2596 | "Return t if FILENAME can be executed by you.\n\ | |
8b235fde | 2597 | For a directory, this means you can access files in that directory.") |
570d7624 JB |
2598 | (filename) |
2599 | Lisp_Object filename; | |
2600 | ||
2601 | { | |
199607e4 | 2602 | Lisp_Object absname; |
32f4334d | 2603 | Lisp_Object handler; |
570d7624 JB |
2604 | |
2605 | CHECK_STRING (filename, 0); | |
199607e4 | 2606 | absname = Fexpand_file_name (filename, Qnil); |
32f4334d RS |
2607 | |
2608 | /* If the file name has special constructs in it, | |
2609 | call the corresponding file handler. */ | |
199607e4 | 2610 | handler = Ffind_file_name_handler (absname, Qfile_executable_p); |
32f4334d | 2611 | if (!NILP (handler)) |
199607e4 | 2612 | return call2 (handler, Qfile_executable_p, absname); |
32f4334d | 2613 | |
199607e4 | 2614 | return (check_executable (XSTRING (absname)->data) ? Qt : Qnil); |
570d7624 JB |
2615 | } |
2616 | ||
2617 | DEFUN ("file-readable-p", Ffile_readable_p, Sfile_readable_p, 1, 1, 0, | |
2618 | "Return t if file FILENAME exists and you can read it.\n\ | |
2619 | See also `file-exists-p' and `file-attributes'.") | |
2620 | (filename) | |
2621 | Lisp_Object filename; | |
2622 | { | |
199607e4 | 2623 | Lisp_Object absname; |
32f4334d | 2624 | Lisp_Object handler; |
4018b5ef | 2625 | int desc; |
570d7624 JB |
2626 | |
2627 | CHECK_STRING (filename, 0); | |
199607e4 | 2628 | absname = Fexpand_file_name (filename, Qnil); |
32f4334d RS |
2629 | |
2630 | /* If the file name has special constructs in it, | |
2631 | call the corresponding file handler. */ | |
199607e4 | 2632 | handler = Ffind_file_name_handler (absname, Qfile_readable_p); |
32f4334d | 2633 | if (!NILP (handler)) |
199607e4 | 2634 | return call2 (handler, Qfile_readable_p, absname); |
32f4334d | 2635 | |
199607e4 RS |
2636 | #ifdef DOS_NT |
2637 | /* Under MS-DOS and Windows, open does not work for directories. */ | |
2638 | if (access (XSTRING (absname)->data, 0) == 0) | |
a8a7d065 RS |
2639 | return Qt; |
2640 | return Qnil; | |
199607e4 RS |
2641 | #else /* not DOS_NT */ |
2642 | desc = open (XSTRING (absname)->data, O_RDONLY); | |
4018b5ef RS |
2643 | if (desc < 0) |
2644 | return Qnil; | |
2645 | close (desc); | |
2646 | return Qt; | |
199607e4 | 2647 | #endif /* not DOS_NT */ |
570d7624 JB |
2648 | } |
2649 | ||
f793dc6c RS |
2650 | /* Having this before file-symlink-p mysteriously caused it to be forgotten |
2651 | on the RT/PC. */ | |
2652 | DEFUN ("file-writable-p", Ffile_writable_p, Sfile_writable_p, 1, 1, 0, | |
2653 | "Return t if file FILENAME can be written or created by you.") | |
2654 | (filename) | |
2655 | Lisp_Object filename; | |
2656 | { | |
199607e4 | 2657 | Lisp_Object absname, dir; |
f793dc6c RS |
2658 | Lisp_Object handler; |
2659 | struct stat statbuf; | |
2660 | ||
2661 | CHECK_STRING (filename, 0); | |
199607e4 | 2662 | absname = Fexpand_file_name (filename, Qnil); |
f793dc6c RS |
2663 | |
2664 | /* If the file name has special constructs in it, | |
2665 | call the corresponding file handler. */ | |
199607e4 | 2666 | handler = Ffind_file_name_handler (absname, Qfile_writable_p); |
f793dc6c | 2667 | if (!NILP (handler)) |
199607e4 | 2668 | return call2 (handler, Qfile_writable_p, absname); |
f793dc6c | 2669 | |
199607e4 RS |
2670 | if (stat (XSTRING (absname)->data, &statbuf) >= 0) |
2671 | return (check_writable (XSTRING (absname)->data) | |
f793dc6c | 2672 | ? Qt : Qnil); |
199607e4 | 2673 | dir = Ffile_name_directory (absname); |
f793dc6c RS |
2674 | #ifdef VMS |
2675 | if (!NILP (dir)) | |
2676 | dir = Fdirectory_file_name (dir); | |
2677 | #endif /* VMS */ | |
2678 | #ifdef MSDOS | |
2679 | if (!NILP (dir)) | |
2680 | dir = Fdirectory_file_name (dir); | |
2681 | #endif /* MSDOS */ | |
2682 | return (check_writable (!NILP (dir) ? (char *) XSTRING (dir)->data : "") | |
2683 | ? Qt : Qnil); | |
2684 | } | |
2685 | \f | |
570d7624 | 2686 | DEFUN ("file-symlink-p", Ffile_symlink_p, Sfile_symlink_p, 1, 1, 0, |
89de89c7 RS |
2687 | "Return non-nil if file FILENAME is the name of a symbolic link.\n\ |
2688 | The value is the name of the file to which it is linked.\n\ | |
2689 | Otherwise returns nil.") | |
570d7624 JB |
2690 | (filename) |
2691 | Lisp_Object filename; | |
2692 | { | |
2693 | #ifdef S_IFLNK | |
2694 | char *buf; | |
2695 | int bufsize; | |
2696 | int valsize; | |
2697 | Lisp_Object val; | |
32f4334d | 2698 | Lisp_Object handler; |
570d7624 JB |
2699 | |
2700 | CHECK_STRING (filename, 0); | |
2701 | filename = Fexpand_file_name (filename, Qnil); | |
2702 | ||
32f4334d RS |
2703 | /* If the file name has special constructs in it, |
2704 | call the corresponding file handler. */ | |
49307295 | 2705 | handler = Ffind_file_name_handler (filename, Qfile_symlink_p); |
32f4334d RS |
2706 | if (!NILP (handler)) |
2707 | return call2 (handler, Qfile_symlink_p, filename); | |
2708 | ||
570d7624 JB |
2709 | bufsize = 100; |
2710 | while (1) | |
2711 | { | |
2712 | buf = (char *) xmalloc (bufsize); | |
2713 | bzero (buf, bufsize); | |
2714 | valsize = readlink (XSTRING (filename)->data, buf, bufsize); | |
2715 | if (valsize < bufsize) break; | |
2716 | /* Buffer was not long enough */ | |
9ac0d9e0 | 2717 | xfree (buf); |
570d7624 JB |
2718 | bufsize *= 2; |
2719 | } | |
2720 | if (valsize == -1) | |
2721 | { | |
9ac0d9e0 | 2722 | xfree (buf); |
570d7624 JB |
2723 | return Qnil; |
2724 | } | |
2725 | val = make_string (buf, valsize); | |
9ac0d9e0 | 2726 | xfree (buf); |
570d7624 JB |
2727 | return val; |
2728 | #else /* not S_IFLNK */ | |
2729 | return Qnil; | |
2730 | #endif /* not S_IFLNK */ | |
2731 | } | |
2732 | ||
570d7624 JB |
2733 | DEFUN ("file-directory-p", Ffile_directory_p, Sfile_directory_p, 1, 1, 0, |
2734 | "Return t if file FILENAME is the name of a directory as a file.\n\ | |
2735 | A directory name spec may be given instead; then the value is t\n\ | |
2736 | if the directory so specified exists and really is a directory.") | |
2737 | (filename) | |
2738 | Lisp_Object filename; | |
2739 | { | |
199607e4 | 2740 | register Lisp_Object absname; |
570d7624 | 2741 | struct stat st; |
32f4334d | 2742 | Lisp_Object handler; |
570d7624 | 2743 | |
199607e4 | 2744 | absname = expand_and_dir_to_file (filename, current_buffer->directory); |
570d7624 | 2745 | |
32f4334d RS |
2746 | /* If the file name has special constructs in it, |
2747 | call the corresponding file handler. */ | |
199607e4 | 2748 | handler = Ffind_file_name_handler (absname, Qfile_directory_p); |
32f4334d | 2749 | if (!NILP (handler)) |
199607e4 | 2750 | return call2 (handler, Qfile_directory_p, absname); |
32f4334d | 2751 | |
199607e4 | 2752 | if (stat (XSTRING (absname)->data, &st) < 0) |
570d7624 JB |
2753 | return Qnil; |
2754 | return (st.st_mode & S_IFMT) == S_IFDIR ? Qt : Qnil; | |
2755 | } | |
2756 | ||
b72dea2a JB |
2757 | DEFUN ("file-accessible-directory-p", Ffile_accessible_directory_p, Sfile_accessible_directory_p, 1, 1, 0, |
2758 | "Return t if file FILENAME is the name of a directory as a file,\n\ | |
2759 | and files in that directory can be opened by you. In order to use a\n\ | |
2760 | directory as a buffer's current directory, this predicate must return true.\n\ | |
2761 | A directory name spec may be given instead; then the value is t\n\ | |
2762 | if the directory so specified exists and really is a readable and\n\ | |
2763 | searchable directory.") | |
2764 | (filename) | |
2765 | Lisp_Object filename; | |
2766 | { | |
32f4334d | 2767 | Lisp_Object handler; |
1a04498e | 2768 | int tem; |
d26859eb | 2769 | struct gcpro gcpro1; |
32f4334d RS |
2770 | |
2771 | /* If the file name has special constructs in it, | |
2772 | call the corresponding file handler. */ | |
49307295 | 2773 | handler = Ffind_file_name_handler (filename, Qfile_accessible_directory_p); |
32f4334d RS |
2774 | if (!NILP (handler)) |
2775 | return call2 (handler, Qfile_accessible_directory_p, filename); | |
2776 | ||
d26859eb KH |
2777 | /* It's an unlikely combination, but yes we really do need to gcpro: |
2778 | Suppose that file-accessible-directory-p has no handler, but | |
2779 | file-directory-p does have a handler; this handler causes a GC which | |
2780 | relocates the string in `filename'; and finally file-directory-p | |
2781 | returns non-nil. Then we would end up passing a garbaged string | |
2782 | to file-executable-p. */ | |
2783 | GCPRO1 (filename); | |
1a04498e KH |
2784 | tem = (NILP (Ffile_directory_p (filename)) |
2785 | || NILP (Ffile_executable_p (filename))); | |
d26859eb | 2786 | UNGCPRO; |
1a04498e | 2787 | return tem ? Qnil : Qt; |
b72dea2a JB |
2788 | } |
2789 | ||
f793dc6c RS |
2790 | DEFUN ("file-regular-p", Ffile_regular_p, Sfile_regular_p, 1, 1, 0, |
2791 | "Return t if file FILENAME is the name of a regular file.\n\ | |
2792 | This is the sort of file that holds an ordinary stream of data bytes.") | |
2793 | (filename) | |
2794 | Lisp_Object filename; | |
2795 | { | |
199607e4 | 2796 | register Lisp_Object absname; |
f793dc6c RS |
2797 | struct stat st; |
2798 | Lisp_Object handler; | |
2799 | ||
199607e4 | 2800 | absname = expand_and_dir_to_file (filename, current_buffer->directory); |
f793dc6c RS |
2801 | |
2802 | /* If the file name has special constructs in it, | |
2803 | call the corresponding file handler. */ | |
199607e4 | 2804 | handler = Ffind_file_name_handler (absname, Qfile_regular_p); |
f793dc6c | 2805 | if (!NILP (handler)) |
199607e4 | 2806 | return call2 (handler, Qfile_regular_p, absname); |
f793dc6c | 2807 | |
199607e4 | 2808 | if (stat (XSTRING (absname)->data, &st) < 0) |
f793dc6c RS |
2809 | return Qnil; |
2810 | return (st.st_mode & S_IFMT) == S_IFREG ? Qt : Qnil; | |
2811 | } | |
2812 | \f | |
570d7624 | 2813 | DEFUN ("file-modes", Ffile_modes, Sfile_modes, 1, 1, 0, |
3b7f6e60 | 2814 | "Return mode bits of file named FILENAME, as an integer.") |
570d7624 JB |
2815 | (filename) |
2816 | Lisp_Object filename; | |
2817 | { | |
199607e4 | 2818 | Lisp_Object absname; |
570d7624 | 2819 | struct stat st; |
32f4334d | 2820 | Lisp_Object handler; |
570d7624 | 2821 | |
199607e4 | 2822 | absname = expand_and_dir_to_file (filename, current_buffer->directory); |
570d7624 | 2823 | |
32f4334d RS |
2824 | /* If the file name has special constructs in it, |
2825 | call the corresponding file handler. */ | |
199607e4 | 2826 | handler = Ffind_file_name_handler (absname, Qfile_modes); |
32f4334d | 2827 | if (!NILP (handler)) |
199607e4 | 2828 | return call2 (handler, Qfile_modes, absname); |
32f4334d | 2829 | |
199607e4 | 2830 | if (stat (XSTRING (absname)->data, &st) < 0) |
570d7624 | 2831 | return Qnil; |
199607e4 RS |
2832 | #ifdef MSDOS |
2833 | if (check_executable (XSTRING (absname)->data)) | |
3be3c08e | 2834 | st.st_mode |= S_IEXEC; |
199607e4 | 2835 | #endif /* MSDOS */ |
3ace87e3 | 2836 | |
570d7624 JB |
2837 | return make_number (st.st_mode & 07777); |
2838 | } | |
2839 | ||
2840 | DEFUN ("set-file-modes", Fset_file_modes, Sset_file_modes, 2, 2, 0, | |
3b7f6e60 | 2841 | "Set mode bits of file named FILENAME to MODE (an integer).\n\ |
570d7624 JB |
2842 | Only the 12 low bits of MODE are used.") |
2843 | (filename, mode) | |
2844 | Lisp_Object filename, mode; | |
2845 | { | |
199607e4 | 2846 | Lisp_Object absname; |
32f4334d | 2847 | Lisp_Object handler; |
570d7624 | 2848 | |
199607e4 | 2849 | absname = Fexpand_file_name (filename, current_buffer->directory); |
570d7624 JB |
2850 | CHECK_NUMBER (mode, 1); |
2851 | ||
32f4334d RS |
2852 | /* If the file name has special constructs in it, |
2853 | call the corresponding file handler. */ | |
199607e4 | 2854 | handler = Ffind_file_name_handler (absname, Qset_file_modes); |
32f4334d | 2855 | if (!NILP (handler)) |
199607e4 | 2856 | return call3 (handler, Qset_file_modes, absname, mode); |
32f4334d | 2857 | |
199607e4 RS |
2858 | if (chmod (XSTRING (absname)->data, XINT (mode)) < 0) |
2859 | report_file_error ("Doing chmod", Fcons (absname, Qnil)); | |
570d7624 JB |
2860 | |
2861 | return Qnil; | |
2862 | } | |
2863 | ||
c24e9a53 | 2864 | DEFUN ("set-default-file-modes", Fset_default_file_modes, Sset_default_file_modes, 1, 1, 0, |
5f85ea58 RS |
2865 | "Set the file permission bits for newly created files.\n\ |
2866 | The argument MODE should be an integer; only the low 9 bits are used.\n\ | |
36a8c287 | 2867 | This setting is inherited by subprocesses.") |
5f85ea58 RS |
2868 | (mode) |
2869 | Lisp_Object mode; | |
36a8c287 | 2870 | { |
5f85ea58 | 2871 | CHECK_NUMBER (mode, 0); |
199607e4 | 2872 | |
5f85ea58 | 2873 | umask ((~ XINT (mode)) & 0777); |
36a8c287 JB |
2874 | |
2875 | return Qnil; | |
2876 | } | |
2877 | ||
c24e9a53 | 2878 | DEFUN ("default-file-modes", Fdefault_file_modes, Sdefault_file_modes, 0, 0, 0, |
5f85ea58 RS |
2879 | "Return the default file protection for created files.\n\ |
2880 | The value is an integer.") | |
36a8c287 JB |
2881 | () |
2882 | { | |
5f85ea58 RS |
2883 | int realmask; |
2884 | Lisp_Object value; | |
36a8c287 | 2885 | |
5f85ea58 RS |
2886 | realmask = umask (0); |
2887 | umask (realmask); | |
36a8c287 | 2888 | |
46283abe | 2889 | XSETINT (value, (~ realmask) & 0777); |
5f85ea58 | 2890 | return value; |
36a8c287 | 2891 | } |
f793dc6c | 2892 | \f |
85ffea93 RS |
2893 | #ifdef unix |
2894 | ||
2895 | DEFUN ("unix-sync", Funix_sync, Sunix_sync, 0, 0, "", | |
2896 | "Tell Unix to finish all pending disk updates.") | |
2897 | () | |
2898 | { | |
2899 | sync (); | |
2900 | return Qnil; | |
2901 | } | |
2902 | ||
2903 | #endif /* unix */ | |
2904 | ||
570d7624 JB |
2905 | DEFUN ("file-newer-than-file-p", Ffile_newer_than_file_p, Sfile_newer_than_file_p, 2, 2, 0, |
2906 | "Return t if file FILE1 is newer than file FILE2.\n\ | |
2907 | If FILE1 does not exist, the answer is nil;\n\ | |
2908 | otherwise, if FILE2 does not exist, the answer is t.") | |
2909 | (file1, file2) | |
2910 | Lisp_Object file1, file2; | |
2911 | { | |
199607e4 | 2912 | Lisp_Object absname1, absname2; |
570d7624 JB |
2913 | struct stat st; |
2914 | int mtime1; | |
32f4334d | 2915 | Lisp_Object handler; |
09121adc | 2916 | struct gcpro gcpro1, gcpro2; |
570d7624 JB |
2917 | |
2918 | CHECK_STRING (file1, 0); | |
2919 | CHECK_STRING (file2, 0); | |
2920 | ||
199607e4 RS |
2921 | absname1 = Qnil; |
2922 | GCPRO2 (absname1, file2); | |
2923 | absname1 = expand_and_dir_to_file (file1, current_buffer->directory); | |
2924 | absname2 = expand_and_dir_to_file (file2, current_buffer->directory); | |
09121adc | 2925 | UNGCPRO; |
570d7624 | 2926 | |
32f4334d RS |
2927 | /* If the file name has special constructs in it, |
2928 | call the corresponding file handler. */ | |
199607e4 | 2929 | handler = Ffind_file_name_handler (absname1, Qfile_newer_than_file_p); |
51cf6d37 | 2930 | if (NILP (handler)) |
199607e4 | 2931 | handler = Ffind_file_name_handler (absname2, Qfile_newer_than_file_p); |
32f4334d | 2932 | if (!NILP (handler)) |
199607e4 | 2933 | return call3 (handler, Qfile_newer_than_file_p, absname1, absname2); |
32f4334d | 2934 | |
199607e4 | 2935 | if (stat (XSTRING (absname1)->data, &st) < 0) |
570d7624 JB |
2936 | return Qnil; |
2937 | ||
2938 | mtime1 = st.st_mtime; | |
2939 | ||
199607e4 | 2940 | if (stat (XSTRING (absname2)->data, &st) < 0) |
570d7624 JB |
2941 | return Qt; |
2942 | ||
2943 | return (mtime1 > st.st_mtime) ? Qt : Qnil; | |
2944 | } | |
2945 | \f | |
5e570b75 | 2946 | #ifdef DOS_NT |
4c3c22f3 | 2947 | Lisp_Object Qfind_buffer_file_type; |
5e570b75 | 2948 | #endif /* DOS_NT */ |
4c3c22f3 | 2949 | |
570d7624 | 2950 | DEFUN ("insert-file-contents", Finsert_file_contents, Sinsert_file_contents, |
3d0387c0 | 2951 | 1, 5, 0, |
570d7624 | 2952 | "Insert contents of file FILENAME after point.\n\ |
7fded690 | 2953 | Returns list of absolute file name and length of data inserted.\n\ |
570d7624 JB |
2954 | If second argument VISIT is non-nil, the buffer's visited filename\n\ |
2955 | and last save file modtime are set, and it is marked unmodified.\n\ | |
2956 | If visiting and the file does not exist, visiting is completed\n\ | |
7fded690 JB |
2957 | before the error is signaled.\n\n\ |
2958 | The optional third and fourth arguments BEG and END\n\ | |
2959 | specify what portion of the file to insert.\n\ | |
3d0387c0 RS |
2960 | If VISIT is non-nil, BEG and END must be nil.\n\ |
2961 | If optional fifth argument REPLACE is non-nil,\n\ | |
2962 | it means replace the current buffer contents (in the accessible portion)\n\ | |
2963 | with the file contents. This is better than simply deleting and inserting\n\ | |
2964 | the whole thing because (1) it preserves some marker positions\n\ | |
2965 | and (2) it puts less data in the undo list.") | |
2966 | (filename, visit, beg, end, replace) | |
2967 | Lisp_Object filename, visit, beg, end, replace; | |
570d7624 JB |
2968 | { |
2969 | struct stat st; | |
2970 | register int fd; | |
2971 | register int inserted = 0; | |
2972 | register int how_much; | |
2973 | int count = specpdl_ptr - specpdl; | |
1a04498e | 2974 | struct gcpro gcpro1, gcpro2, gcpro3; |
d6a3cc15 RS |
2975 | Lisp_Object handler, val, insval; |
2976 | Lisp_Object p; | |
7fded690 | 2977 | int total; |
53c34c46 | 2978 | int not_regular = 0; |
32f4334d | 2979 | |
95385625 RS |
2980 | if (current_buffer->base_buffer && ! NILP (visit)) |
2981 | error ("Cannot do file visiting in an indirect buffer"); | |
2982 | ||
2983 | if (!NILP (current_buffer->read_only)) | |
2984 | Fbarf_if_buffer_read_only (); | |
2985 | ||
32f4334d | 2986 | val = Qnil; |
d6a3cc15 | 2987 | p = Qnil; |
32f4334d | 2988 | |
1a04498e | 2989 | GCPRO3 (filename, val, p); |
570d7624 JB |
2990 | |
2991 | CHECK_STRING (filename, 0); | |
2992 | filename = Fexpand_file_name (filename, Qnil); | |
2993 | ||
32f4334d RS |
2994 | /* If the file name has special constructs in it, |
2995 | call the corresponding file handler. */ | |
49307295 | 2996 | handler = Ffind_file_name_handler (filename, Qinsert_file_contents); |
32f4334d RS |
2997 | if (!NILP (handler)) |
2998 | { | |
3d0387c0 RS |
2999 | val = call6 (handler, Qinsert_file_contents, filename, |
3000 | visit, beg, end, replace); | |
32f4334d RS |
3001 | goto handled; |
3002 | } | |
3003 | ||
570d7624 JB |
3004 | fd = -1; |
3005 | ||
3006 | #ifndef APOLLO | |
99bc28f4 | 3007 | if (stat (XSTRING (filename)->data, &st) < 0) |
570d7624 | 3008 | #else |
4018b5ef | 3009 | if ((fd = open (XSTRING (filename)->data, O_RDONLY)) < 0 |
570d7624 JB |
3010 | || fstat (fd, &st) < 0) |
3011 | #endif /* not APOLLO */ | |
3012 | { | |
3013 | if (fd >= 0) close (fd); | |
99bc28f4 | 3014 | badopen: |
265a9e55 | 3015 | if (NILP (visit)) |
570d7624 JB |
3016 | report_file_error ("Opening input file", Fcons (filename, Qnil)); |
3017 | st.st_mtime = -1; | |
3018 | how_much = 0; | |
3019 | goto notfound; | |
3020 | } | |
3021 | ||
99bc28f4 | 3022 | #ifdef S_IFREG |
be53b411 JB |
3023 | /* This code will need to be changed in order to work on named |
3024 | pipes, and it's probably just not worth it. So we should at | |
3025 | least signal an error. */ | |
99bc28f4 | 3026 | if (!S_ISREG (st.st_mode)) |
330bfe57 RS |
3027 | { |
3028 | if (NILP (visit)) | |
3029 | Fsignal (Qfile_error, | |
3030 | Fcons (build_string ("not a regular file"), | |
3031 | Fcons (filename, Qnil))); | |
3032 | ||
3033 | not_regular = 1; | |
3034 | goto notfound; | |
3035 | } | |
be53b411 JB |
3036 | #endif |
3037 | ||
99bc28f4 | 3038 | if (fd < 0) |
4018b5ef | 3039 | if ((fd = open (XSTRING (filename)->data, O_RDONLY)) < 0) |
99bc28f4 KH |
3040 | goto badopen; |
3041 | ||
3042 | /* Replacement should preserve point as it preserves markers. */ | |
3043 | if (!NILP (replace)) | |
3044 | record_unwind_protect (restore_point_unwind, Fpoint_marker ()); | |
3045 | ||
3046 | record_unwind_protect (close_file_unwind, make_number (fd)); | |
3047 | ||
570d7624 JB |
3048 | /* Supposedly happens on VMS. */ |
3049 | if (st.st_size < 0) | |
3050 | error ("File size is negative"); | |
be53b411 | 3051 | |
7fded690 JB |
3052 | if (!NILP (beg) || !NILP (end)) |
3053 | if (!NILP (visit)) | |
3054 | error ("Attempt to visit less than an entire file"); | |
3055 | ||
3056 | if (!NILP (beg)) | |
3057 | CHECK_NUMBER (beg, 0); | |
3058 | else | |
2acfd7ae | 3059 | XSETFASTINT (beg, 0); |
7fded690 JB |
3060 | |
3061 | if (!NILP (end)) | |
3062 | CHECK_NUMBER (end, 0); | |
3063 | else | |
3064 | { | |
3065 | XSETINT (end, st.st_size); | |
3066 | if (XINT (end) != st.st_size) | |
3067 | error ("maximum buffer size exceeded"); | |
3068 | } | |
3069 | ||
3d0387c0 RS |
3070 | /* If requested, replace the accessible part of the buffer |
3071 | with the file contents. Avoid replacing text at the | |
3072 | beginning or end of the buffer that matches the file contents; | |
3073 | that preserves markers pointing to the unchanged parts. */ | |
5e570b75 | 3074 | #ifdef DOS_NT |
e54d3b5d RS |
3075 | /* On MSDOS, replace mode doesn't really work, except for binary files, |
3076 | and it's not worth supporting just for them. */ | |
3077 | if (!NILP (replace)) | |
3078 | { | |
3079 | replace = Qnil; | |
2acfd7ae KH |
3080 | XSETFASTINT (beg, 0); |
3081 | XSETFASTINT (end, st.st_size); | |
e54d3b5d RS |
3082 | del_range_1 (BEGV, ZV, 0); |
3083 | } | |
5e570b75 | 3084 | #else /* not DOS_NT */ |
3d0387c0 RS |
3085 | if (!NILP (replace)) |
3086 | { | |
268466ed | 3087 | unsigned char buffer[1 << 14]; |
3d0387c0 RS |
3088 | int same_at_start = BEGV; |
3089 | int same_at_end = ZV; | |
9c28748f RS |
3090 | int overlap; |
3091 | ||
3d0387c0 RS |
3092 | immediate_quit = 1; |
3093 | QUIT; | |
3094 | /* Count how many chars at the start of the file | |
3095 | match the text at the beginning of the buffer. */ | |
3096 | while (1) | |
3097 | { | |
3098 | int nread, bufpos; | |
3099 | ||
3100 | nread = read (fd, buffer, sizeof buffer); | |
3101 | if (nread < 0) | |
3102 | error ("IO error reading %s: %s", | |
3103 | XSTRING (filename)->data, strerror (errno)); | |
3104 | else if (nread == 0) | |
3105 | break; | |
3106 | bufpos = 0; | |
3107 | while (bufpos < nread && same_at_start < ZV | |
3108 | && FETCH_CHAR (same_at_start) == buffer[bufpos]) | |
3109 | same_at_start++, bufpos++; | |
3110 | /* If we found a discrepancy, stop the scan. | |
8e6208c5 | 3111 | Otherwise loop around and scan the next bufferful. */ |
3d0387c0 RS |
3112 | if (bufpos != nread) |
3113 | break; | |
3114 | } | |
3115 | immediate_quit = 0; | |
3116 | /* If the file matches the buffer completely, | |
3117 | there's no need to replace anything. */ | |
1051b3b3 | 3118 | if (same_at_start - BEGV == st.st_size) |
3d0387c0 RS |
3119 | { |
3120 | close (fd); | |
a1d2b64a | 3121 | specpdl_ptr--; |
1051b3b3 RS |
3122 | /* Truncate the buffer to the size of the file. */ |
3123 | del_range_1 (same_at_start, same_at_end, 0); | |
3d0387c0 RS |
3124 | goto handled; |
3125 | } | |
3126 | immediate_quit = 1; | |
3127 | QUIT; | |
3128 | /* Count how many chars at the end of the file | |
3129 | match the text at the end of the buffer. */ | |
3130 | while (1) | |
3131 | { | |
3132 | int total_read, nread, bufpos, curpos, trial; | |
3133 | ||
3134 | /* At what file position are we now scanning? */ | |
3135 | curpos = st.st_size - (ZV - same_at_end); | |
fc81fa9e KH |
3136 | /* If the entire file matches the buffer tail, stop the scan. */ |
3137 | if (curpos == 0) | |
3138 | break; | |
3d0387c0 RS |
3139 | /* How much can we scan in the next step? */ |
3140 | trial = min (curpos, sizeof buffer); | |
3141 | if (lseek (fd, curpos - trial, 0) < 0) | |
3142 | report_file_error ("Setting file position", | |
3143 | Fcons (filename, Qnil)); | |
3144 | ||
3145 | total_read = 0; | |
3146 | while (total_read < trial) | |
3147 | { | |
3148 | nread = read (fd, buffer + total_read, trial - total_read); | |
3149 | if (nread <= 0) | |
3150 | error ("IO error reading %s: %s", | |
3151 | XSTRING (filename)->data, strerror (errno)); | |
3152 | total_read += nread; | |
3153 | } | |
8e6208c5 | 3154 | /* Scan this bufferful from the end, comparing with |
3d0387c0 RS |
3155 | the Emacs buffer. */ |
3156 | bufpos = total_read; | |
3157 | /* Compare with same_at_start to avoid counting some buffer text | |
3158 | as matching both at the file's beginning and at the end. */ | |
3159 | while (bufpos > 0 && same_at_end > same_at_start | |
3160 | && FETCH_CHAR (same_at_end - 1) == buffer[bufpos - 1]) | |
3161 | same_at_end--, bufpos--; | |
3162 | /* If we found a discrepancy, stop the scan. | |
8e6208c5 | 3163 | Otherwise loop around and scan the preceding bufferful. */ |
3d0387c0 RS |
3164 | if (bufpos != 0) |
3165 | break; | |
26fb39b5 RS |
3166 | /* If display current starts at beginning of line, |
3167 | keep it that way. */ | |
3168 | if (XBUFFER (XWINDOW (selected_window)->buffer) == current_buffer) | |
3169 | XWINDOW (selected_window)->start_at_line_beg = Fbolp (); | |
3d0387c0 RS |
3170 | } |
3171 | immediate_quit = 0; | |
9c28748f RS |
3172 | |
3173 | /* Don't try to reuse the same piece of text twice. */ | |
3174 | overlap = same_at_start - BEGV - (same_at_end + st.st_size - ZV); | |
3175 | if (overlap > 0) | |
3176 | same_at_end += overlap; | |
3177 | ||
3d0387c0 | 3178 | /* Arrange to read only the nonmatching middle part of the file. */ |
2acfd7ae KH |
3179 | XSETFASTINT (beg, same_at_start - BEGV); |
3180 | XSETFASTINT (end, st.st_size - (ZV - same_at_end)); | |
9c28748f | 3181 | |
251f623e | 3182 | del_range_1 (same_at_start, same_at_end, 0); |
a1d2b64a RS |
3183 | /* Insert from the file at the proper position. */ |
3184 | SET_PT (same_at_start); | |
3d0387c0 | 3185 | } |
5e570b75 | 3186 | #endif /* not DOS_NT */ |
3d0387c0 | 3187 | |
7fded690 JB |
3188 | total = XINT (end) - XINT (beg); |
3189 | ||
570d7624 JB |
3190 | { |
3191 | register Lisp_Object temp; | |
3192 | ||
3193 | /* Make sure point-max won't overflow after this insertion. */ | |
46283abe | 3194 | XSETINT (temp, total); |
7fded690 | 3195 | if (total != XINT (temp)) |
570d7624 JB |
3196 | error ("maximum buffer size exceeded"); |
3197 | } | |
3198 | ||
57d8d468 | 3199 | if (NILP (visit) && total > 0) |
570d7624 JB |
3200 | prepare_to_modify_buffer (point, point); |
3201 | ||
3202 | move_gap (point); | |
7fded690 JB |
3203 | if (GAP_SIZE < total) |
3204 | make_gap (total - GAP_SIZE); | |
3205 | ||
a1d2b64a | 3206 | if (XINT (beg) != 0 || !NILP (replace)) |
7fded690 JB |
3207 | { |
3208 | if (lseek (fd, XINT (beg), 0) < 0) | |
3209 | report_file_error ("Setting file position", Fcons (filename, Qnil)); | |
3210 | } | |
3211 | ||
a1d2b64a RS |
3212 | how_much = 0; |
3213 | while (inserted < total) | |
570d7624 | 3214 | { |
5e570b75 RS |
3215 | /* try is reserved in some compilers (Microsoft C) */ |
3216 | int trytry = min (total - inserted, 64 << 10); | |
b5148e85 RS |
3217 | int this; |
3218 | ||
3219 | /* Allow quitting out of the actual I/O. */ | |
3220 | immediate_quit = 1; | |
3221 | QUIT; | |
5e570b75 | 3222 | this = read (fd, &FETCH_CHAR (point + inserted - 1) + 1, trytry); |
b5148e85 | 3223 | immediate_quit = 0; |
570d7624 JB |
3224 | |
3225 | if (this <= 0) | |
3226 | { | |
3227 | how_much = this; | |
3228 | break; | |
3229 | } | |
3230 | ||
3231 | GPT += this; | |
3232 | GAP_SIZE -= this; | |
3233 | ZV += this; | |
3234 | Z += this; | |
3235 | inserted += this; | |
3236 | } | |
3237 | ||
5e570b75 | 3238 | #ifdef DOS_NT |
4c3c22f3 RS |
3239 | /* Demacs 1.1.1 91/10/16 HIRANO Satoshi, MW July 1993 */ |
3240 | /* Determine file type from name and remove LFs from CR-LFs if the file | |
3241 | is deemed to be a text file. */ | |
3242 | { | |
bf162ea8 RS |
3243 | current_buffer->buffer_file_type |
3244 | = call1 (Qfind_buffer_file_type, filename); | |
bf162ea8 | 3245 | if (NILP (current_buffer->buffer_file_type)) |
4c3c22f3 | 3246 | { |
a1d2b64a RS |
3247 | int reduced_size |
3248 | = inserted - crlf_to_lf (inserted, &FETCH_CHAR (point - 1) + 1); | |
4c3c22f3 RS |
3249 | ZV -= reduced_size; |
3250 | Z -= reduced_size; | |
3251 | GPT -= reduced_size; | |
3252 | GAP_SIZE += reduced_size; | |
3253 | inserted -= reduced_size; | |
3254 | } | |
3255 | } | |
5e570b75 | 3256 | #endif /* DOS_NT */ |
4c3c22f3 | 3257 | |
570d7624 | 3258 | if (inserted > 0) |
7d8451f1 RS |
3259 | { |
3260 | record_insert (point, inserted); | |
8d4e077b JA |
3261 | |
3262 | /* Only defined if Emacs is compiled with USE_TEXT_PROPERTIES */ | |
3263 | offset_intervals (current_buffer, point, inserted); | |
7d8451f1 RS |
3264 | MODIFF++; |
3265 | } | |
570d7624 JB |
3266 | |
3267 | close (fd); | |
3268 | ||
a1d2b64a RS |
3269 | /* Discard the unwind protect for closing the file. */ |
3270 | specpdl_ptr--; | |
570d7624 JB |
3271 | |
3272 | if (how_much < 0) | |
3273 | error ("IO error reading %s: %s", | |
ce97267f | 3274 | XSTRING (filename)->data, strerror (errno)); |
570d7624 JB |
3275 | |
3276 | notfound: | |
32f4334d | 3277 | handled: |
570d7624 | 3278 | |
265a9e55 | 3279 | if (!NILP (visit)) |
570d7624 | 3280 | { |
cfadd376 RS |
3281 | if (!EQ (current_buffer->undo_list, Qt)) |
3282 | current_buffer->undo_list = Qnil; | |
570d7624 JB |
3283 | #ifdef APOLLO |
3284 | stat (XSTRING (filename)->data, &st); | |
3285 | #endif | |
62bcf009 | 3286 | |
a7e82472 RS |
3287 | if (NILP (handler)) |
3288 | { | |
3289 | current_buffer->modtime = st.st_mtime; | |
3290 | current_buffer->filename = filename; | |
3291 | } | |
62bcf009 | 3292 | |
95385625 | 3293 | SAVE_MODIFF = MODIFF; |
570d7624 | 3294 | current_buffer->auto_save_modified = MODIFF; |
2acfd7ae | 3295 | XSETFASTINT (current_buffer->save_length, Z - BEG); |
570d7624 | 3296 | #ifdef CLASH_DETECTION |
32f4334d RS |
3297 | if (NILP (handler)) |
3298 | { | |
f471f4c2 RS |
3299 | if (!NILP (current_buffer->file_truename)) |
3300 | unlock_file (current_buffer->file_truename); | |
32f4334d RS |
3301 | unlock_file (filename); |
3302 | } | |
570d7624 | 3303 | #endif /* CLASH_DETECTION */ |
330bfe57 RS |
3304 | if (not_regular) |
3305 | Fsignal (Qfile_error, | |
3306 | Fcons (build_string ("not a regular file"), | |
3307 | Fcons (filename, Qnil))); | |
3308 | ||
570d7624 | 3309 | /* If visiting nonexistent file, return nil. */ |
32f4334d | 3310 | if (current_buffer->modtime == -1) |
570d7624 JB |
3311 | report_file_error ("Opening input file", Fcons (filename, Qnil)); |
3312 | } | |
3313 | ||
0d420e88 BG |
3314 | /* Decode file format */ |
3315 | if (inserted > 0) | |
3316 | { | |
199607e4 | 3317 | insval = call3 (Qformat_decode, |
0d420e88 BG |
3318 | Qnil, make_number (inserted), visit); |
3319 | CHECK_NUMBER (insval, 0); | |
3320 | inserted = XFASTINT (insval); | |
3321 | } | |
3322 | ||
62bcf009 | 3323 | if (inserted > 0 && NILP (visit) && total > 0) |
d2cad97d | 3324 | signal_after_change (point, 0, inserted); |
199607e4 | 3325 | |
d6a3cc15 RS |
3326 | if (inserted > 0) |
3327 | { | |
3328 | p = Vafter_insert_file_functions; | |
3329 | while (!NILP (p)) | |
3330 | { | |
3331 | insval = call1 (Fcar (p), make_number (inserted)); | |
3332 | if (!NILP (insval)) | |
3333 | { | |
3334 | CHECK_NUMBER (insval, 0); | |
3335 | inserted = XFASTINT (insval); | |
3336 | } | |
3337 | QUIT; | |
3338 | p = Fcdr (p); | |
3339 | } | |
3340 | } | |
3341 | ||
a1d2b64a RS |
3342 | if (NILP (val)) |
3343 | val = Fcons (filename, | |
3344 | Fcons (make_number (inserted), | |
3345 | Qnil)); | |
3346 | ||
3347 | RETURN_UNGCPRO (unbind_to (count, val)); | |
570d7624 | 3348 | } |
7fded690 | 3349 | \f |
d6a3cc15 RS |
3350 | static Lisp_Object build_annotations (); |
3351 | ||
6fc6f94b RS |
3352 | /* If build_annotations switched buffers, switch back to BUF. |
3353 | Kill the temporary buffer that was selected in the meantime. */ | |
3354 | ||
199607e4 | 3355 | static Lisp_Object |
6fc6f94b RS |
3356 | build_annotations_unwind (buf) |
3357 | Lisp_Object buf; | |
3358 | { | |
3359 | Lisp_Object tembuf; | |
3360 | ||
3361 | if (XBUFFER (buf) == current_buffer) | |
3362 | return Qnil; | |
3363 | tembuf = Fcurrent_buffer (); | |
3364 | Fset_buffer (buf); | |
3365 | Fkill_buffer (tembuf); | |
3366 | return Qnil; | |
3367 | } | |
3368 | ||
7204a979 | 3369 | DEFUN ("write-region", Fwrite_region, Swrite_region, 3, 6, |
570d7624 JB |
3370 | "r\nFWrite region to file: ", |
3371 | "Write current region into specified file.\n\ | |
3372 | When called from a program, takes three arguments:\n\ | |
3373 | START, END and FILENAME. START and END are buffer positions.\n\ | |
3374 | Optional fourth argument APPEND if non-nil means\n\ | |
3375 | append to existing file contents (if any).\n\ | |
3376 | Optional fifth argument VISIT if t means\n\ | |
3377 | set the last-save-file-modtime of buffer to this file's modtime\n\ | |
3378 | and mark buffer not modified.\n\ | |
3b7792ed RS |
3379 | If VISIT is a string, it is a second file name;\n\ |
3380 | the output goes to FILENAME, but the buffer is marked as visiting VISIT.\n\ | |
3381 | VISIT is also the file name to lock and unlock for clash detection.\n\ | |
1d386d28 RS |
3382 | If VISIT is neither t nor nil nor a string,\n\ |
3383 | that means do not print the \"Wrote file\" message.\n\ | |
7204a979 RS |
3384 | The optional sixth arg LOCKNAME, if non-nil, specifies the name to\n\ |
3385 | use for locking and unlocking, overriding FILENAME and VISIT.\n\ | |
570d7624 JB |
3386 | Kludgy feature: if START is a string, then that string is written\n\ |
3387 | to the file, instead of any buffer contents, and END is ignored.") | |
7204a979 RS |
3388 | (start, end, filename, append, visit, lockname) |
3389 | Lisp_Object start, end, filename, append, visit, lockname; | |
570d7624 JB |
3390 | { |
3391 | register int desc; | |
3392 | int failure; | |
3393 | int save_errno; | |
3394 | unsigned char *fn; | |
3395 | struct stat st; | |
c975dd7a | 3396 | int tem; |
570d7624 | 3397 | int count = specpdl_ptr - specpdl; |
6fc6f94b | 3398 | int count1; |
570d7624 | 3399 | #ifdef VMS |
5e570b75 | 3400 | unsigned char *fname = 0; /* If non-0, original filename (must rename) */ |
570d7624 | 3401 | #endif /* VMS */ |
3eac9910 | 3402 | Lisp_Object handler; |
4ad827c5 | 3403 | Lisp_Object visit_file; |
d6a3cc15 RS |
3404 | Lisp_Object annotations; |
3405 | int visiting, quietly; | |
7204a979 | 3406 | struct gcpro gcpro1, gcpro2, gcpro3, gcpro4, gcpro5; |
6fc6f94b | 3407 | struct buffer *given_buffer; |
5e570b75 | 3408 | #ifdef DOS_NT |
4c3c22f3 RS |
3409 | int buffer_file_type |
3410 | = NILP (current_buffer->buffer_file_type) ? O_TEXT : O_BINARY; | |
5e570b75 | 3411 | #endif /* DOS_NT */ |
570d7624 | 3412 | |
95385625 RS |
3413 | if (current_buffer->base_buffer && ! NILP (visit)) |
3414 | error ("Cannot do file visiting in an indirect buffer"); | |
3415 | ||
561cb8e1 | 3416 | if (!NILP (start) && !STRINGP (start)) |
570d7624 JB |
3417 | validate_region (&start, &end); |
3418 | ||
7204a979 | 3419 | GCPRO3 (filename, visit, lockname); |
570d7624 | 3420 | filename = Fexpand_file_name (filename, Qnil); |
561cb8e1 | 3421 | if (STRINGP (visit)) |
e5176bae | 3422 | visit_file = Fexpand_file_name (visit, Qnil); |
4ad827c5 RS |
3423 | else |
3424 | visit_file = filename; | |
1a04498e | 3425 | UNGCPRO; |
4ad827c5 | 3426 | |
561cb8e1 | 3427 | visiting = (EQ (visit, Qt) || STRINGP (visit)); |
d6a3cc15 RS |
3428 | quietly = !NILP (visit); |
3429 | ||
3430 | annotations = Qnil; | |
3431 | ||
7204a979 RS |
3432 | if (NILP (lockname)) |
3433 | lockname = visit_file; | |
3434 | ||
3435 | GCPRO5 (start, filename, annotations, visit_file, lockname); | |
570d7624 | 3436 | |
32f4334d RS |
3437 | /* If the file name has special constructs in it, |
3438 | call the corresponding file handler. */ | |
49307295 | 3439 | handler = Ffind_file_name_handler (filename, Qwrite_region); |
b56ad927 | 3440 | /* If FILENAME has no handler, see if VISIT has one. */ |
93c30b5f | 3441 | if (NILP (handler) && STRINGP (visit)) |
199607e4 | 3442 | handler = Ffind_file_name_handler (visit, Qwrite_region); |
3eac9910 | 3443 | |
32f4334d RS |
3444 | if (!NILP (handler)) |
3445 | { | |
32f4334d | 3446 | Lisp_Object val; |
51cf6d37 RS |
3447 | val = call6 (handler, Qwrite_region, start, end, |
3448 | filename, append, visit); | |
32f4334d | 3449 | |
d6a3cc15 | 3450 | if (visiting) |
32f4334d | 3451 | { |
95385625 | 3452 | SAVE_MODIFF = MODIFF; |
2acfd7ae | 3453 | XSETFASTINT (current_buffer->save_length, Z - BEG); |
3b7792ed | 3454 | current_buffer->filename = visit_file; |
32f4334d | 3455 | } |
09121adc | 3456 | UNGCPRO; |
32f4334d RS |
3457 | return val; |
3458 | } | |
3459 | ||
561cb8e1 RS |
3460 | /* Special kludge to simplify auto-saving. */ |
3461 | if (NILP (start)) | |
3462 | { | |
2acfd7ae KH |
3463 | XSETFASTINT (start, BEG); |
3464 | XSETFASTINT (end, Z); | |
561cb8e1 RS |
3465 | } |
3466 | ||
6fc6f94b RS |
3467 | record_unwind_protect (build_annotations_unwind, Fcurrent_buffer ()); |
3468 | count1 = specpdl_ptr - specpdl; | |
3469 | ||
3470 | given_buffer = current_buffer; | |
d6a3cc15 | 3471 | annotations = build_annotations (start, end); |
6fc6f94b RS |
3472 | if (current_buffer != given_buffer) |
3473 | { | |
3474 | start = BEGV; | |
3475 | end = ZV; | |
3476 | } | |
d6a3cc15 | 3477 | |
570d7624 JB |
3478 | #ifdef CLASH_DETECTION |
3479 | if (!auto_saving) | |
7204a979 | 3480 | lock_file (lockname); |
570d7624 JB |
3481 | #endif /* CLASH_DETECTION */ |
3482 | ||
09121adc | 3483 | fn = XSTRING (filename)->data; |
570d7624 | 3484 | desc = -1; |
265a9e55 | 3485 | if (!NILP (append)) |
5e570b75 | 3486 | #ifdef DOS_NT |
4c3c22f3 | 3487 | desc = open (fn, O_WRONLY | buffer_file_type); |
5e570b75 | 3488 | #else /* not DOS_NT */ |
570d7624 | 3489 | desc = open (fn, O_WRONLY); |
5e570b75 | 3490 | #endif /* not DOS_NT */ |
570d7624 JB |
3491 | |
3492 | if (desc < 0) | |
3493 | #ifdef VMS | |
5e570b75 | 3494 | if (auto_saving) /* Overwrite any previous version of autosave file */ |
570d7624 | 3495 | { |
5e570b75 | 3496 | vms_truncate (fn); /* if fn exists, truncate to zero length */ |
570d7624 JB |
3497 | desc = open (fn, O_RDWR); |
3498 | if (desc < 0) | |
561cb8e1 | 3499 | desc = creat_copy_attrs (STRINGP (current_buffer->filename) |
b72dea2a JB |
3500 | ? XSTRING (current_buffer->filename)->data : 0, |
3501 | fn); | |
570d7624 | 3502 | } |
5e570b75 | 3503 | else /* Write to temporary name and rename if no errors */ |
570d7624 JB |
3504 | { |
3505 | Lisp_Object temp_name; | |
3506 | temp_name = Ffile_name_directory (filename); | |
3507 | ||
265a9e55 | 3508 | if (!NILP (temp_name)) |
570d7624 JB |
3509 | { |
3510 | temp_name = Fmake_temp_name (concat2 (temp_name, | |
3511 | build_string ("$$SAVE$$"))); | |
3512 | fname = XSTRING (filename)->data; | |
3513 | fn = XSTRING (temp_name)->data; | |
3514 | desc = creat_copy_attrs (fname, fn); | |
3515 | if (desc < 0) | |
3516 | { | |
3517 | /* If we can't open the temporary file, try creating a new | |
3518 | version of the original file. VMS "creat" creates a | |
3519 | new version rather than truncating an existing file. */ | |
3520 | fn = fname; | |
3521 | fname = 0; | |
3522 | desc = creat (fn, 0666); | |
3523 | #if 0 /* This can clobber an existing file and fail to replace it, | |
3524 | if the user runs out of space. */ | |
3525 | if (desc < 0) | |
3526 | { | |
3527 | /* We can't make a new version; | |
3528 | try to truncate and rewrite existing version if any. */ | |
3529 | vms_truncate (fn); | |
3530 | desc = open (fn, O_RDWR); | |
3531 | } | |
3532 | #endif | |
3533 | } | |
3534 | } | |
3535 | else | |
3536 | desc = creat (fn, 0666); | |
3537 | } | |
3538 | #else /* not VMS */ | |
5e570b75 | 3539 | #ifdef DOS_NT |
199607e4 RS |
3540 | desc = open (fn, |
3541 | O_WRONLY | O_TRUNC | O_CREAT | buffer_file_type, | |
4c3c22f3 | 3542 | S_IREAD | S_IWRITE); |
5e570b75 | 3543 | #else /* not DOS_NT */ |
570d7624 | 3544 | desc = creat (fn, auto_saving ? auto_save_mode_bits : 0666); |
5e570b75 | 3545 | #endif /* not DOS_NT */ |
570d7624 JB |
3546 | #endif /* not VMS */ |
3547 | ||
09121adc RS |
3548 | UNGCPRO; |
3549 | ||
570d7624 JB |
3550 | if (desc < 0) |
3551 | { | |
3552 | #ifdef CLASH_DETECTION | |
3553 | save_errno = errno; | |
7204a979 | 3554 | if (!auto_saving) unlock_file (lockname); |
570d7624 JB |
3555 | errno = save_errno; |
3556 | #endif /* CLASH_DETECTION */ | |
3557 | report_file_error ("Opening output file", Fcons (filename, Qnil)); | |
3558 | } | |
3559 | ||
3560 | record_unwind_protect (close_file_unwind, make_number (desc)); | |
3561 | ||
265a9e55 | 3562 | if (!NILP (append)) |
570d7624 JB |
3563 | if (lseek (desc, 0, 2) < 0) |
3564 | { | |
3565 | #ifdef CLASH_DETECTION | |
7204a979 | 3566 | if (!auto_saving) unlock_file (lockname); |
570d7624 JB |
3567 | #endif /* CLASH_DETECTION */ |
3568 | report_file_error ("Lseek error", Fcons (filename, Qnil)); | |
3569 | } | |
3570 | ||
3571 | #ifdef VMS | |
3572 | /* | |
3573 | * Kludge Warning: The VMS C RTL likes to insert carriage returns | |
3574 | * if we do writes that don't end with a carriage return. Furthermore | |
3575 | * it cannot handle writes of more then 16K. The modified | |
3576 | * version of "sys_write" in SYSDEP.C (see comment there) copes with | |
3577 | * this EXCEPT for the last record (iff it doesn't end with a carriage | |
3578 | * return). This implies that if your buffer doesn't end with a carriage | |
3579 | * return, you get one free... tough. However it also means that if | |
3580 | * we make two calls to sys_write (a la the following code) you can | |
3581 | * get one at the gap as well. The easiest way to fix this (honest) | |
3582 | * is to move the gap to the next newline (or the end of the buffer). | |
3583 | * Thus this change. | |
3584 | * | |
3585 | * Yech! | |
3586 | */ | |
3587 | if (GPT > BEG && GPT_ADDR[-1] != '\n') | |
3588 | move_gap (find_next_newline (GPT, 1)); | |
3589 | #endif | |
3590 | ||
3591 | failure = 0; | |
3592 | immediate_quit = 1; | |
3593 | ||
561cb8e1 | 3594 | if (STRINGP (start)) |
570d7624 | 3595 | { |
d6a3cc15 RS |
3596 | failure = 0 > a_write (desc, XSTRING (start)->data, |
3597 | XSTRING (start)->size, 0, &annotations); | |
570d7624 JB |
3598 | save_errno = errno; |
3599 | } | |
3600 | else if (XINT (start) != XINT (end)) | |
3601 | { | |
c975dd7a | 3602 | int nwritten = 0; |
570d7624 JB |
3603 | if (XINT (start) < GPT) |
3604 | { | |
3605 | register int end1 = XINT (end); | |
3606 | tem = XINT (start); | |
d6a3cc15 | 3607 | failure = 0 > a_write (desc, &FETCH_CHAR (tem), |
c975dd7a RS |
3608 | min (GPT, end1) - tem, tem, &annotations); |
3609 | nwritten += min (GPT, end1) - tem; | |
570d7624 JB |
3610 | save_errno = errno; |
3611 | } | |
3612 | ||
3613 | if (XINT (end) > GPT && !failure) | |
3614 | { | |
3615 | tem = XINT (start); | |
3616 | tem = max (tem, GPT); | |
d6a3cc15 | 3617 | failure = 0 > a_write (desc, &FETCH_CHAR (tem), XINT (end) - tem, |
c975dd7a RS |
3618 | tem, &annotations); |
3619 | nwritten += XINT (end) - tem; | |
d6a3cc15 RS |
3620 | save_errno = errno; |
3621 | } | |
69f6e679 RS |
3622 | } |
3623 | else | |
3624 | { | |
3625 | /* If file was empty, still need to write the annotations */ | |
3626 | failure = 0 > a_write (desc, "", 0, XINT (start), &annotations); | |
3627 | save_errno = errno; | |
570d7624 JB |
3628 | } |
3629 | ||
3630 | immediate_quit = 0; | |
3631 | ||
6e23c83e | 3632 | #ifdef HAVE_FSYNC |
570d7624 JB |
3633 | /* Note fsync appears to change the modtime on BSD4.2 (both vax and sun). |
3634 | Disk full in NFS may be reported here. */ | |
1daffa1c RS |
3635 | /* mib says that closing the file will try to write as fast as NFS can do |
3636 | it, and that means the fsync here is not crucial for autosave files. */ | |
3637 | if (!auto_saving && fsync (desc) < 0) | |
cb33c142 KH |
3638 | { |
3639 | /* If fsync fails with EINTR, don't treat that as serious. */ | |
3640 | if (errno != EINTR) | |
3641 | failure = 1, save_errno = errno; | |
3642 | } | |
570d7624 JB |
3643 | #endif |
3644 | ||
199607e4 | 3645 | /* Spurious "file has changed on disk" warnings have been |
570d7624 JB |
3646 | observed on Suns as well. |
3647 | It seems that `close' can change the modtime, under nfs. | |
3648 | ||
3649 | (This has supposedly been fixed in Sunos 4, | |
3650 | but who knows about all the other machines with NFS?) */ | |
3651 | #if 0 | |
3652 | ||
3653 | /* On VMS and APOLLO, must do the stat after the close | |
3654 | since closing changes the modtime. */ | |
3655 | #ifndef VMS | |
3656 | #ifndef APOLLO | |
3657 | /* Recall that #if defined does not work on VMS. */ | |
3658 | #define FOO | |
3659 | fstat (desc, &st); | |
3660 | #endif | |
3661 | #endif | |
3662 | #endif | |
3663 | ||
3664 | /* NFS can report a write failure now. */ | |
3665 | if (close (desc) < 0) | |
3666 | failure = 1, save_errno = errno; | |
3667 | ||
3668 | #ifdef VMS | |
3669 | /* If we wrote to a temporary name and had no errors, rename to real name. */ | |
3670 | if (fname) | |
3671 | { | |
3672 | if (!failure) | |
3673 | failure = (rename (fn, fname) != 0), save_errno = errno; | |
3674 | fn = fname; | |
3675 | } | |
3676 | #endif /* VMS */ | |
3677 | ||
3678 | #ifndef FOO | |
3679 | stat (fn, &st); | |
3680 | #endif | |
6fc6f94b RS |
3681 | /* Discard the unwind protect for close_file_unwind. */ |
3682 | specpdl_ptr = specpdl + count1; | |
3683 | /* Restore the original current buffer. */ | |
98295b48 | 3684 | visit_file = unbind_to (count, visit_file); |
570d7624 JB |
3685 | |
3686 | #ifdef CLASH_DETECTION | |
3687 | if (!auto_saving) | |
7204a979 | 3688 | unlock_file (lockname); |
570d7624 JB |
3689 | #endif /* CLASH_DETECTION */ |
3690 | ||
3691 | /* Do this before reporting IO error | |
3692 | to avoid a "file has changed on disk" warning on | |
3693 | next attempt to save. */ | |
d6a3cc15 | 3694 | if (visiting) |
570d7624 JB |
3695 | current_buffer->modtime = st.st_mtime; |
3696 | ||
3697 | if (failure) | |
ce97267f | 3698 | error ("IO error writing %s: %s", fn, strerror (save_errno)); |
570d7624 | 3699 | |
d6a3cc15 | 3700 | if (visiting) |
570d7624 | 3701 | { |
95385625 | 3702 | SAVE_MODIFF = MODIFF; |
2acfd7ae | 3703 | XSETFASTINT (current_buffer->save_length, Z - BEG); |
3b7792ed | 3704 | current_buffer->filename = visit_file; |
f4226e89 | 3705 | update_mode_lines++; |
570d7624 | 3706 | } |
d6a3cc15 | 3707 | else if (quietly) |
570d7624 JB |
3708 | return Qnil; |
3709 | ||
3710 | if (!auto_saving) | |
3b7792ed | 3711 | message ("Wrote %s", XSTRING (visit_file)->data); |
570d7624 JB |
3712 | |
3713 | return Qnil; | |
3714 | } | |
3715 | ||
d6a3cc15 RS |
3716 | Lisp_Object merge (); |
3717 | ||
3718 | DEFUN ("car-less-than-car", Fcar_less_than_car, Scar_less_than_car, 2, 2, 0, | |
2ba0ccff | 3719 | "Return t if (car A) is numerically less than (car B).") |
d6a3cc15 RS |
3720 | (a, b) |
3721 | Lisp_Object a, b; | |
3722 | { | |
3723 | return Flss (Fcar (a), Fcar (b)); | |
3724 | } | |
3725 | ||
3726 | /* Build the complete list of annotations appropriate for writing out | |
3727 | the text between START and END, by calling all the functions in | |
6fc6f94b RS |
3728 | write-region-annotate-functions and merging the lists they return. |
3729 | If one of these functions switches to a different buffer, we assume | |
3730 | that buffer contains altered text. Therefore, the caller must | |
3731 | make sure to restore the current buffer in all cases, | |
3732 | as save-excursion would do. */ | |
d6a3cc15 RS |
3733 | |
3734 | static Lisp_Object | |
3735 | build_annotations (start, end) | |
3736 | Lisp_Object start, end; | |
3737 | { | |
3738 | Lisp_Object annotations; | |
3739 | Lisp_Object p, res; | |
3740 | struct gcpro gcpro1, gcpro2; | |
3741 | ||
3742 | annotations = Qnil; | |
3743 | p = Vwrite_region_annotate_functions; | |
3744 | GCPRO2 (annotations, p); | |
3745 | while (!NILP (p)) | |
3746 | { | |
6fc6f94b RS |
3747 | struct buffer *given_buffer = current_buffer; |
3748 | Vwrite_region_annotations_so_far = annotations; | |
d6a3cc15 | 3749 | res = call2 (Fcar (p), start, end); |
6fc6f94b RS |
3750 | /* If the function makes a different buffer current, |
3751 | assume that means this buffer contains altered text to be output. | |
3752 | Reset START and END from the buffer bounds | |
3753 | and discard all previous annotations because they should have | |
3754 | been dealt with by this function. */ | |
3755 | if (current_buffer != given_buffer) | |
3756 | { | |
6fc6f94b RS |
3757 | start = BEGV; |
3758 | end = ZV; | |
3759 | annotations = Qnil; | |
3760 | } | |
d6a3cc15 RS |
3761 | Flength (res); /* Check basic validity of return value */ |
3762 | annotations = merge (annotations, res, Qcar_less_than_car); | |
3763 | p = Fcdr (p); | |
3764 | } | |
0d420e88 BG |
3765 | |
3766 | /* Now do the same for annotation functions implied by the file-format */ | |
3767 | if (auto_saving && (!EQ (Vauto_save_file_format, Qt))) | |
3768 | p = Vauto_save_file_format; | |
3769 | else | |
3770 | p = current_buffer->file_format; | |
3771 | while (!NILP (p)) | |
3772 | { | |
3773 | struct buffer *given_buffer = current_buffer; | |
3774 | Vwrite_region_annotations_so_far = annotations; | |
3775 | res = call3 (Qformat_annotate_function, Fcar (p), start, end); | |
3776 | if (current_buffer != given_buffer) | |
3777 | { | |
3778 | start = BEGV; | |
3779 | end = ZV; | |
3780 | annotations = Qnil; | |
3781 | } | |
3782 | Flength (res); | |
3783 | annotations = merge (annotations, res, Qcar_less_than_car); | |
3784 | p = Fcdr (p); | |
3785 | } | |
d6a3cc15 RS |
3786 | UNGCPRO; |
3787 | return annotations; | |
3788 | } | |
3789 | ||
3790 | /* Write to descriptor DESC the LEN characters starting at ADDR, | |
3791 | assuming they start at position POS in the buffer. | |
3792 | Intersperse with them the annotations from *ANNOT | |
3793 | (those which fall within the range of positions POS to POS + LEN), | |
3794 | each at its appropriate position. | |
3795 | ||
3796 | Modify *ANNOT by discarding elements as we output them. | |
3797 | The return value is negative in case of system call failure. */ | |
3798 | ||
3799 | int | |
3800 | a_write (desc, addr, len, pos, annot) | |
3801 | int desc; | |
3802 | register char *addr; | |
3803 | register int len; | |
3804 | int pos; | |
3805 | Lisp_Object *annot; | |
3806 | { | |
3807 | Lisp_Object tem; | |
3808 | int nextpos; | |
3809 | int lastpos = pos + len; | |
3810 | ||
eb15aa18 | 3811 | while (NILP (*annot) || CONSP (*annot)) |
d6a3cc15 RS |
3812 | { |
3813 | tem = Fcar_safe (Fcar (*annot)); | |
3814 | if (INTEGERP (tem) && XINT (tem) >= pos && XFASTINT (tem) <= lastpos) | |
3815 | nextpos = XFASTINT (tem); | |
3816 | else | |
3817 | return e_write (desc, addr, lastpos - pos); | |
3818 | if (nextpos > pos) | |
3819 | { | |
3820 | if (0 > e_write (desc, addr, nextpos - pos)) | |
3821 | return -1; | |
3822 | addr += nextpos - pos; | |
3823 | pos = nextpos; | |
3824 | } | |
3825 | tem = Fcdr (Fcar (*annot)); | |
3826 | if (STRINGP (tem)) | |
3827 | { | |
3828 | if (0 > e_write (desc, XSTRING (tem)->data, XSTRING (tem)->size)) | |
3829 | return -1; | |
3830 | } | |
3831 | *annot = Fcdr (*annot); | |
3832 | } | |
3833 | } | |
3834 | ||
570d7624 JB |
3835 | int |
3836 | e_write (desc, addr, len) | |
3837 | int desc; | |
3838 | register char *addr; | |
3839 | register int len; | |
3840 | { | |
3841 | char buf[16 * 1024]; | |
3842 | register char *p, *end; | |
3843 | ||
3844 | if (!EQ (current_buffer->selective_display, Qt)) | |
3845 | return write (desc, addr, len) - len; | |
3846 | else | |
3847 | { | |
3848 | p = buf; | |
3849 | end = p + sizeof buf; | |
3850 | while (len--) | |
3851 | { | |
3852 | if (p == end) | |
3853 | { | |
3854 | if (write (desc, buf, sizeof buf) != sizeof buf) | |
3855 | return -1; | |
3856 | p = buf; | |
3857 | } | |
3858 | *p = *addr++; | |
3859 | if (*p++ == '\015') | |
3860 | p[-1] = '\n'; | |
3861 | } | |
3862 | if (p != buf) | |
3863 | if (write (desc, buf, p - buf) != p - buf) | |
3864 | return -1; | |
3865 | } | |
3866 | return 0; | |
3867 | } | |
3868 | ||
3869 | DEFUN ("verify-visited-file-modtime", Fverify_visited_file_modtime, | |
3870 | Sverify_visited_file_modtime, 1, 1, 0, | |
3871 | "Return t if last mod time of BUF's visited file matches what BUF records.\n\ | |
3872 | This means that the file has not been changed since it was visited or saved.") | |
3873 | (buf) | |
3874 | Lisp_Object buf; | |
3875 | { | |
3876 | struct buffer *b; | |
3877 | struct stat st; | |
32f4334d | 3878 | Lisp_Object handler; |
570d7624 JB |
3879 | |
3880 | CHECK_BUFFER (buf, 0); | |
3881 | b = XBUFFER (buf); | |
3882 | ||
93c30b5f | 3883 | if (!STRINGP (b->filename)) return Qt; |
570d7624 JB |
3884 | if (b->modtime == 0) return Qt; |
3885 | ||
32f4334d RS |
3886 | /* If the file name has special constructs in it, |
3887 | call the corresponding file handler. */ | |
49307295 KH |
3888 | handler = Ffind_file_name_handler (b->filename, |
3889 | Qverify_visited_file_modtime); | |
32f4334d | 3890 | if (!NILP (handler)) |
09121adc | 3891 | return call2 (handler, Qverify_visited_file_modtime, buf); |
32f4334d | 3892 | |
570d7624 JB |
3893 | if (stat (XSTRING (b->filename)->data, &st) < 0) |
3894 | { | |
3895 | /* If the file doesn't exist now and didn't exist before, | |
3896 | we say that it isn't modified, provided the error is a tame one. */ | |
3897 | if (errno == ENOENT || errno == EACCES || errno == ENOTDIR) | |
3898 | st.st_mtime = -1; | |
3899 | else | |
3900 | st.st_mtime = 0; | |
3901 | } | |
3902 | if (st.st_mtime == b->modtime | |
3903 | /* If both are positive, accept them if they are off by one second. */ | |
3904 | || (st.st_mtime > 0 && b->modtime > 0 | |
3905 | && (st.st_mtime == b->modtime + 1 | |
3906 | || st.st_mtime == b->modtime - 1))) | |
3907 | return Qt; | |
3908 | return Qnil; | |
3909 | } | |
3910 | ||
3911 | DEFUN ("clear-visited-file-modtime", Fclear_visited_file_modtime, | |
3912 | Sclear_visited_file_modtime, 0, 0, 0, | |
3913 | "Clear out records of last mod time of visited file.\n\ | |
3914 | Next attempt to save will certainly not complain of a discrepancy.") | |
3915 | () | |
3916 | { | |
3917 | current_buffer->modtime = 0; | |
3918 | return Qnil; | |
3919 | } | |
3920 | ||
f5d5eccf RS |
3921 | DEFUN ("visited-file-modtime", Fvisited_file_modtime, |
3922 | Svisited_file_modtime, 0, 0, 0, | |
3923 | "Return the current buffer's recorded visited file modification time.\n\ | |
3924 | The value is a list of the form (HIGH . LOW), like the time values\n\ | |
3925 | that `file-attributes' returns.") | |
3926 | () | |
3927 | { | |
b50536bb | 3928 | return long_to_cons ((unsigned long) current_buffer->modtime); |
f5d5eccf RS |
3929 | } |
3930 | ||
570d7624 | 3931 | DEFUN ("set-visited-file-modtime", Fset_visited_file_modtime, |
f5d5eccf | 3932 | Sset_visited_file_modtime, 0, 1, 0, |
570d7624 JB |
3933 | "Update buffer's recorded modification time from the visited file's time.\n\ |
3934 | Useful if the buffer was not read from the file normally\n\ | |
f5d5eccf RS |
3935 | or if the file itself has been changed for some known benign reason.\n\ |
3936 | An argument specifies the modification time value to use\n\ | |
3937 | \(instead of that of the visited file), in the form of a list\n\ | |
3938 | \(HIGH . LOW) or (HIGH LOW).") | |
3939 | (time_list) | |
3940 | Lisp_Object time_list; | |
570d7624 | 3941 | { |
f5d5eccf RS |
3942 | if (!NILP (time_list)) |
3943 | current_buffer->modtime = cons_to_long (time_list); | |
3944 | else | |
3945 | { | |
3946 | register Lisp_Object filename; | |
3947 | struct stat st; | |
3948 | Lisp_Object handler; | |
570d7624 | 3949 | |
f5d5eccf | 3950 | filename = Fexpand_file_name (current_buffer->filename, Qnil); |
32f4334d | 3951 | |
f5d5eccf RS |
3952 | /* If the file name has special constructs in it, |
3953 | call the corresponding file handler. */ | |
49307295 | 3954 | handler = Ffind_file_name_handler (filename, Qset_visited_file_modtime); |
f5d5eccf | 3955 | if (!NILP (handler)) |
caf3c431 | 3956 | /* The handler can find the file name the same way we did. */ |
76c881b0 | 3957 | return call2 (handler, Qset_visited_file_modtime, Qnil); |
f5d5eccf RS |
3958 | else if (stat (XSTRING (filename)->data, &st) >= 0) |
3959 | current_buffer->modtime = st.st_mtime; | |
3960 | } | |
570d7624 JB |
3961 | |
3962 | return Qnil; | |
3963 | } | |
3964 | \f | |
3965 | Lisp_Object | |
3966 | auto_save_error () | |
3967 | { | |
570d7624 | 3968 | ring_bell (); |
1a04498e | 3969 | message ("Autosaving...error for %s", XSTRING (current_buffer->name)->data); |
de49a6d3 | 3970 | Fsleep_for (make_number (1), Qnil); |
1a04498e | 3971 | message ("Autosaving...error!for %s", XSTRING (current_buffer->name)->data); |
de49a6d3 | 3972 | Fsleep_for (make_number (1), Qnil); |
1a04498e | 3973 | message ("Autosaving...error for %s", XSTRING (current_buffer->name)->data); |
de49a6d3 | 3974 | Fsleep_for (make_number (1), Qnil); |
570d7624 JB |
3975 | return Qnil; |
3976 | } | |
3977 | ||
3978 | Lisp_Object | |
3979 | auto_save_1 () | |
3980 | { | |
3981 | unsigned char *fn; | |
3982 | struct stat st; | |
3983 | ||
3984 | /* Get visited file's mode to become the auto save file's mode. */ | |
3985 | if (stat (XSTRING (current_buffer->filename)->data, &st) >= 0) | |
3986 | /* But make sure we can overwrite it later! */ | |
3987 | auto_save_mode_bits = st.st_mode | 0600; | |
3988 | else | |
3989 | auto_save_mode_bits = 0666; | |
3990 | ||
3991 | return | |
3992 | Fwrite_region (Qnil, Qnil, | |
3993 | current_buffer->auto_save_file_name, | |
7204a979 | 3994 | Qnil, Qlambda, Qnil); |
570d7624 JB |
3995 | } |
3996 | ||
e54d3b5d | 3997 | static Lisp_Object |
15fa1468 RS |
3998 | do_auto_save_unwind (desc) /* used as unwind-protect function */ |
3999 | Lisp_Object desc; | |
e54d3b5d | 4000 | { |
3be3c08e | 4001 | auto_saving = 0; |
5badd6a0 KH |
4002 | if (XINT (desc) >= 0) |
4003 | close (XINT (desc)); | |
e54d3b5d RS |
4004 | return Qnil; |
4005 | } | |
4006 | ||
570d7624 JB |
4007 | DEFUN ("do-auto-save", Fdo_auto_save, Sdo_auto_save, 0, 2, "", |
4008 | "Auto-save all buffers that need it.\n\ | |
4009 | This is all buffers that have auto-saving enabled\n\ | |
4010 | and are changed since last auto-saved.\n\ | |
4011 | Auto-saving writes the buffer into a file\n\ | |
4012 | so that your editing is not lost if the system crashes.\n\ | |
012d4cdc RS |
4013 | This file is not the file you visited; that changes only when you save.\n\ |
4014 | Normally we run the normal hook `auto-save-hook' before saving.\n\n\ | |
3b7f6e60 EN |
4015 | A non-nil NO-MESSAGE argument means do not print any message if successful.\n\ |
4016 | A non-nil CURRENT-ONLY argument means save only current buffer.") | |
17857782 JB |
4017 | (no_message, current_only) |
4018 | Lisp_Object no_message, current_only; | |
570d7624 JB |
4019 | { |
4020 | struct buffer *old = current_buffer, *b; | |
4021 | Lisp_Object tail, buf; | |
4022 | int auto_saved = 0; | |
4023 | char *omessage = echo_area_glyphs; | |
f05b275b | 4024 | int omessage_length = echo_area_glyphs_length; |
f14b1c68 JB |
4025 | extern int minibuf_level; |
4026 | int do_handled_files; | |
ff4c9993 | 4027 | Lisp_Object oquit; |
e54d3b5d | 4028 | int listdesc; |
e54d3b5d RS |
4029 | int count = specpdl_ptr - specpdl; |
4030 | int *ptr; | |
ff4c9993 RS |
4031 | |
4032 | /* Ordinarily don't quit within this function, | |
4033 | but don't make it impossible to quit (in case we get hung in I/O). */ | |
4034 | oquit = Vquit_flag; | |
4035 | Vquit_flag = Qnil; | |
570d7624 JB |
4036 | |
4037 | /* No GCPRO needed, because (when it matters) all Lisp_Object variables | |
4038 | point to non-strings reached from Vbuffer_alist. */ | |
4039 | ||
570d7624 | 4040 | if (minibuf_level) |
17857782 | 4041 | no_message = Qt; |
570d7624 | 4042 | |
265a9e55 | 4043 | if (!NILP (Vrun_hooks)) |
570d7624 JB |
4044 | call1 (Vrun_hooks, intern ("auto-save-hook")); |
4045 | ||
e54d3b5d RS |
4046 | if (STRINGP (Vauto_save_list_file_name)) |
4047 | { | |
258fd2cb RS |
4048 | Lisp_Object listfile; |
4049 | listfile = Fexpand_file_name (Vauto_save_list_file_name, Qnil); | |
5e570b75 | 4050 | #ifdef DOS_NT |
199607e4 | 4051 | listdesc = open (XSTRING (listfile)->data, |
e54d3b5d RS |
4052 | O_WRONLY | O_TRUNC | O_CREAT | O_TEXT, |
4053 | S_IREAD | S_IWRITE); | |
5e570b75 | 4054 | #else /* not DOS_NT */ |
258fd2cb | 4055 | listdesc = creat (XSTRING (listfile)->data, 0666); |
5e570b75 | 4056 | #endif /* not DOS_NT */ |
e54d3b5d RS |
4057 | } |
4058 | else | |
4059 | listdesc = -1; | |
199607e4 | 4060 | |
3be3c08e RS |
4061 | /* Arrange to close that file whether or not we get an error. |
4062 | Also reset auto_saving to 0. */ | |
5badd6a0 | 4063 | record_unwind_protect (do_auto_save_unwind, make_number (listdesc)); |
e54d3b5d | 4064 | |
3be3c08e RS |
4065 | auto_saving = 1; |
4066 | ||
f14b1c68 JB |
4067 | /* First, save all files which don't have handlers. If Emacs is |
4068 | crashing, the handlers may tweak what is causing Emacs to crash | |
4069 | in the first place, and it would be a shame if Emacs failed to | |
4070 | autosave perfectly ordinary files because it couldn't handle some | |
4071 | ange-ftp'd file. */ | |
4072 | for (do_handled_files = 0; do_handled_files < 2; do_handled_files++) | |
41d86b13 | 4073 | for (tail = Vbuffer_alist; GC_CONSP (tail); tail = XCONS (tail)->cdr) |
f14b1c68 JB |
4074 | { |
4075 | buf = XCONS (XCONS (tail)->car)->cdr; | |
4076 | b = XBUFFER (buf); | |
199607e4 | 4077 | |
e54d3b5d | 4078 | /* Record all the buffers that have auto save mode |
258fd2cb RS |
4079 | in the special file that lists them. For each of these buffers, |
4080 | Record visited name (if any) and auto save name. */ | |
93c30b5f | 4081 | if (STRINGP (b->auto_save_file_name) |
e54d3b5d RS |
4082 | && listdesc >= 0 && do_handled_files == 0) |
4083 | { | |
258fd2cb RS |
4084 | if (!NILP (b->filename)) |
4085 | { | |
4086 | write (listdesc, XSTRING (b->filename)->data, | |
4087 | XSTRING (b->filename)->size); | |
4088 | } | |
4089 | write (listdesc, "\n", 1); | |
e54d3b5d RS |
4090 | write (listdesc, XSTRING (b->auto_save_file_name)->data, |
4091 | XSTRING (b->auto_save_file_name)->size); | |
4092 | write (listdesc, "\n", 1); | |
4093 | } | |
17857782 | 4094 | |
f14b1c68 JB |
4095 | if (!NILP (current_only) |
4096 | && b != current_buffer) | |
4097 | continue; | |
e54d3b5d | 4098 | |
95385625 RS |
4099 | /* Don't auto-save indirect buffers. |
4100 | The base buffer takes care of it. */ | |
4101 | if (b->base_buffer) | |
4102 | continue; | |
4103 | ||
f14b1c68 JB |
4104 | /* Check for auto save enabled |
4105 | and file changed since last auto save | |
4106 | and file changed since last real save. */ | |
93c30b5f | 4107 | if (STRINGP (b->auto_save_file_name) |
95385625 | 4108 | && BUF_SAVE_MODIFF (b) < BUF_MODIFF (b) |
f14b1c68 | 4109 | && b->auto_save_modified < BUF_MODIFF (b) |
82c2d839 RS |
4110 | /* -1 means we've turned off autosaving for a while--see below. */ |
4111 | && XINT (b->save_length) >= 0 | |
f14b1c68 | 4112 | && (do_handled_files |
49307295 KH |
4113 | || NILP (Ffind_file_name_handler (b->auto_save_file_name, |
4114 | Qwrite_region)))) | |
f14b1c68 | 4115 | { |
b60247d9 RS |
4116 | EMACS_TIME before_time, after_time; |
4117 | ||
4118 | EMACS_GET_TIME (before_time); | |
4119 | ||
4120 | /* If we had a failure, don't try again for 20 minutes. */ | |
4121 | if (b->auto_save_failure_time >= 0 | |
4122 | && EMACS_SECS (before_time) - b->auto_save_failure_time < 1200) | |
4123 | continue; | |
4124 | ||
f14b1c68 JB |
4125 | if ((XFASTINT (b->save_length) * 10 |
4126 | > (BUF_Z (b) - BUF_BEG (b)) * 13) | |
4127 | /* A short file is likely to change a large fraction; | |
4128 | spare the user annoying messages. */ | |
4129 | && XFASTINT (b->save_length) > 5000 | |
4130 | /* These messages are frequent and annoying for `*mail*'. */ | |
4131 | && !EQ (b->filename, Qnil) | |
4132 | && NILP (no_message)) | |
4133 | { | |
4134 | /* It has shrunk too much; turn off auto-saving here. */ | |
4135 | message ("Buffer %s has shrunk a lot; auto save turned off there", | |
4136 | XSTRING (b->name)->data); | |
82c2d839 RS |
4137 | /* Turn off auto-saving until there's a real save, |
4138 | and prevent any more warnings. */ | |
46283abe | 4139 | XSETINT (b->save_length, -1); |
f14b1c68 JB |
4140 | Fsleep_for (make_number (1), Qnil); |
4141 | continue; | |
4142 | } | |
4143 | set_buffer_internal (b); | |
4144 | if (!auto_saved && NILP (no_message)) | |
4145 | message1 ("Auto-saving..."); | |
4146 | internal_condition_case (auto_save_1, Qt, auto_save_error); | |
4147 | auto_saved++; | |
4148 | b->auto_save_modified = BUF_MODIFF (b); | |
2acfd7ae | 4149 | XSETFASTINT (current_buffer->save_length, Z - BEG); |
f14b1c68 | 4150 | set_buffer_internal (old); |
b60247d9 RS |
4151 | |
4152 | EMACS_GET_TIME (after_time); | |
4153 | ||
4154 | /* If auto-save took more than 60 seconds, | |
4155 | assume it was an NFS failure that got a timeout. */ | |
4156 | if (EMACS_SECS (after_time) - EMACS_SECS (before_time) > 60) | |
4157 | b->auto_save_failure_time = EMACS_SECS (after_time); | |
f14b1c68 JB |
4158 | } |
4159 | } | |
570d7624 | 4160 | |
b67f2ca5 RS |
4161 | /* Prevent another auto save till enough input events come in. */ |
4162 | record_auto_save (); | |
570d7624 | 4163 | |
17857782 | 4164 | if (auto_saved && NILP (no_message)) |
f05b275b KH |
4165 | { |
4166 | if (omessage) | |
31f3d831 KH |
4167 | { |
4168 | sit_for (1, 0, 0, 0); | |
4169 | message2 (omessage, omessage_length); | |
4170 | } | |
f05b275b KH |
4171 | else |
4172 | message1 ("Auto-saving...done"); | |
4173 | } | |
570d7624 | 4174 | |
ff4c9993 RS |
4175 | Vquit_flag = oquit; |
4176 | ||
e54d3b5d | 4177 | unbind_to (count, Qnil); |
570d7624 JB |
4178 | return Qnil; |
4179 | } | |
4180 | ||
4181 | DEFUN ("set-buffer-auto-saved", Fset_buffer_auto_saved, | |
4182 | Sset_buffer_auto_saved, 0, 0, 0, | |
4183 | "Mark current buffer as auto-saved with its current text.\n\ | |
4184 | No auto-save file will be written until the buffer changes again.") | |
4185 | () | |
4186 | { | |
4187 | current_buffer->auto_save_modified = MODIFF; | |
2acfd7ae | 4188 | XSETFASTINT (current_buffer->save_length, Z - BEG); |
b60247d9 RS |
4189 | current_buffer->auto_save_failure_time = -1; |
4190 | return Qnil; | |
4191 | } | |
4192 | ||
4193 | DEFUN ("clear-buffer-auto-save-failure", Fclear_buffer_auto_save_failure, | |
4194 | Sclear_buffer_auto_save_failure, 0, 0, 0, | |
4195 | "Clear any record of a recent auto-save failure in the current buffer.") | |
4196 | () | |
4197 | { | |
4198 | current_buffer->auto_save_failure_time = -1; | |
570d7624 JB |
4199 | return Qnil; |
4200 | } | |
4201 | ||
4202 | DEFUN ("recent-auto-save-p", Frecent_auto_save_p, Srecent_auto_save_p, | |
4203 | 0, 0, 0, | |
4204 | "Return t if buffer has been auto-saved since last read in or saved.") | |
4205 | () | |
4206 | { | |
95385625 | 4207 | return (SAVE_MODIFF < current_buffer->auto_save_modified) ? Qt : Qnil; |
570d7624 JB |
4208 | } |
4209 | \f | |
4210 | /* Reading and completing file names */ | |
4211 | extern Lisp_Object Ffile_name_completion (), Ffile_name_all_completions (); | |
4212 | ||
6e710ae5 RS |
4213 | /* In the string VAL, change each $ to $$ and return the result. */ |
4214 | ||
4215 | static Lisp_Object | |
4216 | double_dollars (val) | |
4217 | Lisp_Object val; | |
4218 | { | |
4219 | register unsigned char *old, *new; | |
4220 | register int n; | |
4221 | int osize, count; | |
4222 | ||
4223 | osize = XSTRING (val)->size; | |
4224 | /* Quote "$" as "$$" to get it past substitute-in-file-name */ | |
4225 | for (n = osize, count = 0, old = XSTRING (val)->data; n > 0; n--) | |
4226 | if (*old++ == '$') count++; | |
4227 | if (count > 0) | |
4228 | { | |
4229 | old = XSTRING (val)->data; | |
4230 | val = Fmake_string (make_number (osize + count), make_number (0)); | |
4231 | new = XSTRING (val)->data; | |
4232 | for (n = osize; n > 0; n--) | |
4233 | if (*old != '$') | |
4234 | *new++ = *old++; | |
4235 | else | |
4236 | { | |
4237 | *new++ = '$'; | |
4238 | *new++ = '$'; | |
4239 | old++; | |
4240 | } | |
4241 | } | |
4242 | return val; | |
4243 | } | |
4244 | ||
570d7624 JB |
4245 | DEFUN ("read-file-name-internal", Fread_file_name_internal, Sread_file_name_internal, |
4246 | 3, 3, 0, | |
4247 | "Internal subroutine for read-file-name. Do not call this.") | |
4248 | (string, dir, action) | |
4249 | Lisp_Object string, dir, action; | |
4250 | /* action is nil for complete, t for return list of completions, | |
4251 | lambda for verify final value */ | |
4252 | { | |
4253 | Lisp_Object name, specdir, realdir, val, orig_string; | |
09121adc | 4254 | int changed; |
8ce069f5 | 4255 | struct gcpro gcpro1, gcpro2, gcpro3, gcpro4, gcpro5; |
09121adc RS |
4256 | |
4257 | realdir = dir; | |
4258 | name = string; | |
4259 | orig_string = Qnil; | |
4260 | specdir = Qnil; | |
4261 | changed = 0; | |
4262 | /* No need to protect ACTION--we only compare it with t and nil. */ | |
8ce069f5 | 4263 | GCPRO5 (string, realdir, name, specdir, orig_string); |
570d7624 JB |
4264 | |
4265 | if (XSTRING (string)->size == 0) | |
4266 | { | |
570d7624 | 4267 | if (EQ (action, Qlambda)) |
09121adc RS |
4268 | { |
4269 | UNGCPRO; | |
4270 | return Qnil; | |
4271 | } | |
570d7624 JB |
4272 | } |
4273 | else | |
4274 | { | |
4275 | orig_string = string; | |
4276 | string = Fsubstitute_in_file_name (string); | |
09121adc | 4277 | changed = NILP (Fstring_equal (string, orig_string)); |
570d7624 | 4278 | name = Ffile_name_nondirectory (string); |
09121adc RS |
4279 | val = Ffile_name_directory (string); |
4280 | if (! NILP (val)) | |
4281 | realdir = Fexpand_file_name (val, realdir); | |
570d7624 JB |
4282 | } |
4283 | ||
265a9e55 | 4284 | if (NILP (action)) |
570d7624 JB |
4285 | { |
4286 | specdir = Ffile_name_directory (string); | |
4287 | val = Ffile_name_completion (name, realdir); | |
09121adc | 4288 | UNGCPRO; |
93c30b5f | 4289 | if (!STRINGP (val)) |
570d7624 | 4290 | { |
09121adc | 4291 | if (changed) |
dbd04e01 | 4292 | return double_dollars (string); |
09121adc | 4293 | return val; |
570d7624 JB |
4294 | } |
4295 | ||
265a9e55 | 4296 | if (!NILP (specdir)) |
570d7624 JB |
4297 | val = concat2 (specdir, val); |
4298 | #ifndef VMS | |
6e710ae5 RS |
4299 | return double_dollars (val); |
4300 | #else /* not VMS */ | |
09121adc | 4301 | return val; |
6e710ae5 | 4302 | #endif /* not VMS */ |
570d7624 | 4303 | } |
09121adc | 4304 | UNGCPRO; |
570d7624 JB |
4305 | |
4306 | if (EQ (action, Qt)) | |
4307 | return Ffile_name_all_completions (name, realdir); | |
4308 | /* Only other case actually used is ACTION = lambda */ | |
4309 | #ifdef VMS | |
4310 | /* Supposedly this helps commands such as `cd' that read directory names, | |
4311 | but can someone explain how it helps them? -- RMS */ | |
4312 | if (XSTRING (name)->size == 0) | |
4313 | return Qt; | |
4314 | #endif /* VMS */ | |
4315 | return Ffile_exists_p (string); | |
4316 | } | |
4317 | ||
4318 | DEFUN ("read-file-name", Fread_file_name, Sread_file_name, 1, 5, 0, | |
4319 | "Read file name, prompting with PROMPT and completing in directory DIR.\n\ | |
4320 | Value is not expanded---you must call `expand-file-name' yourself.\n\ | |
3b7f6e60 EN |
4321 | Default name to DEFAULT-FILENAME if user enters a null string.\n\ |
4322 | (If DEFAULT-FILENAME is omitted, the visited file name is used,\n\ | |
3beeedfe | 4323 | except that if INITIAL is specified, that combined with DIR is used.)\n\ |
570d7624 JB |
4324 | Fourth arg MUSTMATCH non-nil means require existing file's name.\n\ |
4325 | Non-nil and non-t means also require confirmation after completion.\n\ | |
4326 | Fifth arg INITIAL specifies text to start with.\n\ | |
4327 | DIR defaults to current buffer's directory default.") | |
3b7f6e60 EN |
4328 | (prompt, dir, default_filename, mustmatch, initial) |
4329 | Lisp_Object prompt, dir, default_filename, mustmatch, initial; | |
570d7624 | 4330 | { |
85b5fe07 | 4331 | Lisp_Object val, insdef, insdef1, tem; |
570d7624 JB |
4332 | struct gcpro gcpro1, gcpro2; |
4333 | register char *homedir; | |
4334 | int count; | |
4335 | ||
265a9e55 | 4336 | if (NILP (dir)) |
570d7624 | 4337 | dir = current_buffer->directory; |
3b7f6e60 | 4338 | if (NILP (default_filename)) |
3beeedfe RS |
4339 | { |
4340 | if (! NILP (initial)) | |
3b7f6e60 | 4341 | default_filename = Fexpand_file_name (initial, dir); |
3beeedfe | 4342 | else |
3b7f6e60 | 4343 | default_filename = current_buffer->filename; |
3beeedfe | 4344 | } |
570d7624 JB |
4345 | |
4346 | /* If dir starts with user's homedir, change that to ~. */ | |
4347 | homedir = (char *) egetenv ("HOME"); | |
199607e4 RS |
4348 | #ifdef DOS_NT |
4349 | homedir = strcpy (alloca (strlen (homedir) + 1), homedir); | |
4350 | CORRECT_DIR_SEPS (homedir); | |
4351 | #endif | |
570d7624 | 4352 | if (homedir != 0 |
93c30b5f | 4353 | && STRINGP (dir) |
570d7624 | 4354 | && !strncmp (homedir, XSTRING (dir)->data, strlen (homedir)) |
5e570b75 | 4355 | && IS_DIRECTORY_SEP (XSTRING (dir)->data[strlen (homedir)])) |
570d7624 JB |
4356 | { |
4357 | dir = make_string (XSTRING (dir)->data + strlen (homedir) - 1, | |
4358 | XSTRING (dir)->size - strlen (homedir) + 1); | |
4359 | XSTRING (dir)->data[0] = '~'; | |
4360 | } | |
4361 | ||
4362 | if (insert_default_directory) | |
4363 | { | |
4364 | insdef = dir; | |
265a9e55 | 4365 | if (!NILP (initial)) |
570d7624 | 4366 | { |
15c65264 | 4367 | Lisp_Object args[2], pos; |
570d7624 JB |
4368 | |
4369 | args[0] = insdef; | |
4370 | args[1] = initial; | |
4371 | insdef = Fconcat (2, args); | |
351bd676 | 4372 | pos = make_number (XSTRING (double_dollars (dir))->size); |
6e710ae5 | 4373 | insdef1 = Fcons (double_dollars (insdef), pos); |
570d7624 | 4374 | } |
6e710ae5 RS |
4375 | else |
4376 | insdef1 = double_dollars (insdef); | |
570d7624 | 4377 | } |
351bd676 KH |
4378 | else if (!NILP (initial)) |
4379 | { | |
4380 | insdef = initial; | |
4381 | insdef1 = Fcons (double_dollars (insdef), 0); | |
4382 | } | |
570d7624 | 4383 | else |
85b5fe07 | 4384 | insdef = Qnil, insdef1 = Qnil; |
570d7624 JB |
4385 | |
4386 | #ifdef VMS | |
4387 | count = specpdl_ptr - specpdl; | |
4388 | specbind (intern ("completion-ignore-case"), Qt); | |
4389 | #endif | |
4390 | ||
3b7f6e60 | 4391 | GCPRO2 (insdef, default_filename); |
570d7624 | 4392 | val = Fcompleting_read (prompt, intern ("read-file-name-internal"), |
85b5fe07 | 4393 | dir, mustmatch, insdef1, |
15c65264 | 4394 | Qfile_name_history); |
570d7624 JB |
4395 | |
4396 | #ifdef VMS | |
4397 | unbind_to (count, Qnil); | |
4398 | #endif | |
4399 | ||
4400 | UNGCPRO; | |
265a9e55 | 4401 | if (NILP (val)) |
570d7624 JB |
4402 | error ("No file name specified"); |
4403 | tem = Fstring_equal (val, insdef); | |
3b7f6e60 EN |
4404 | if (!NILP (tem) && !NILP (default_filename)) |
4405 | return default_filename; | |
b320926a | 4406 | if (XSTRING (val)->size == 0 && NILP (insdef)) |
d9bc1c99 | 4407 | { |
3b7f6e60 EN |
4408 | if (!NILP (default_filename)) |
4409 | return default_filename; | |
d9bc1c99 RS |
4410 | else |
4411 | error ("No default file name"); | |
4412 | } | |
570d7624 JB |
4413 | return Fsubstitute_in_file_name (val); |
4414 | } | |
4415 | ||
5e570b75 | 4416 | #if 0 /* Old version */ |
570d7624 | 4417 | DEFUN ("read-file-name", Fread_file_name, Sread_file_name, 1, 5, 0, |
0de25302 KH |
4418 | /* Don't confuse make-docfile by having two doc strings for this function. |
4419 | make-docfile does not pay attention to #if, for good reason! */ | |
4420 | 0) | |
570d7624 JB |
4421 | (prompt, dir, defalt, mustmatch, initial) |
4422 | Lisp_Object prompt, dir, defalt, mustmatch, initial; | |
4423 | { | |
4424 | Lisp_Object val, insdef, tem; | |
4425 | struct gcpro gcpro1, gcpro2; | |
4426 | register char *homedir; | |
4427 | int count; | |
4428 | ||
265a9e55 | 4429 | if (NILP (dir)) |
570d7624 | 4430 | dir = current_buffer->directory; |
265a9e55 | 4431 | if (NILP (defalt)) |
570d7624 JB |
4432 | defalt = current_buffer->filename; |
4433 | ||
4434 | /* If dir starts with user's homedir, change that to ~. */ | |
4435 | homedir = (char *) egetenv ("HOME"); | |
4436 | if (homedir != 0 | |
93c30b5f | 4437 | && STRINGP (dir) |
570d7624 JB |
4438 | && !strncmp (homedir, XSTRING (dir)->data, strlen (homedir)) |
4439 | && XSTRING (dir)->data[strlen (homedir)] == '/') | |
4440 | { | |
4441 | dir = make_string (XSTRING (dir)->data + strlen (homedir) - 1, | |
4442 | XSTRING (dir)->size - strlen (homedir) + 1); | |
4443 | XSTRING (dir)->data[0] = '~'; | |
4444 | } | |
4445 | ||
265a9e55 | 4446 | if (!NILP (initial)) |
570d7624 JB |
4447 | insdef = initial; |
4448 | else if (insert_default_directory) | |
4449 | insdef = dir; | |
4450 | else | |
4451 | insdef = build_string (""); | |
4452 | ||
4453 | #ifdef VMS | |
4454 | count = specpdl_ptr - specpdl; | |
4455 | specbind (intern ("completion-ignore-case"), Qt); | |
4456 | #endif | |
4457 | ||
4458 | GCPRO2 (insdef, defalt); | |
4459 | val = Fcompleting_read (prompt, intern ("read-file-name-internal"), | |
4460 | dir, mustmatch, | |
15c65264 RS |
4461 | insert_default_directory ? insdef : Qnil, |
4462 | Qfile_name_history); | |
570d7624 JB |
4463 | |
4464 | #ifdef VMS | |
4465 | unbind_to (count, Qnil); | |
4466 | #endif | |
4467 | ||
4468 | UNGCPRO; | |
265a9e55 | 4469 | if (NILP (val)) |
570d7624 JB |
4470 | error ("No file name specified"); |
4471 | tem = Fstring_equal (val, insdef); | |
265a9e55 | 4472 | if (!NILP (tem) && !NILP (defalt)) |
570d7624 JB |
4473 | return defalt; |
4474 | return Fsubstitute_in_file_name (val); | |
4475 | } | |
4476 | #endif /* Old version */ | |
4477 | \f | |
4478 | syms_of_fileio () | |
4479 | { | |
0bf2eed2 | 4480 | Qexpand_file_name = intern ("expand-file-name"); |
273e0829 | 4481 | Qsubstitute_in_file_name = intern ("substitute-in-file-name"); |
0bf2eed2 RS |
4482 | Qdirectory_file_name = intern ("directory-file-name"); |
4483 | Qfile_name_directory = intern ("file-name-directory"); | |
4484 | Qfile_name_nondirectory = intern ("file-name-nondirectory"); | |
642ef245 | 4485 | Qunhandled_file_name_directory = intern ("unhandled-file-name-directory"); |
0bf2eed2 | 4486 | Qfile_name_as_directory = intern ("file-name-as-directory"); |
32f4334d | 4487 | Qcopy_file = intern ("copy-file"); |
a6e6e718 | 4488 | Qmake_directory_internal = intern ("make-directory-internal"); |
32f4334d RS |
4489 | Qdelete_directory = intern ("delete-directory"); |
4490 | Qdelete_file = intern ("delete-file"); | |
4491 | Qrename_file = intern ("rename-file"); | |
4492 | Qadd_name_to_file = intern ("add-name-to-file"); | |
4493 | Qmake_symbolic_link = intern ("make-symbolic-link"); | |
4494 | Qfile_exists_p = intern ("file-exists-p"); | |
4495 | Qfile_executable_p = intern ("file-executable-p"); | |
4496 | Qfile_readable_p = intern ("file-readable-p"); | |
4497 | Qfile_symlink_p = intern ("file-symlink-p"); | |
4498 | Qfile_writable_p = intern ("file-writable-p"); | |
4499 | Qfile_directory_p = intern ("file-directory-p"); | |
adedc71d | 4500 | Qfile_regular_p = intern ("file-regular-p"); |
32f4334d RS |
4501 | Qfile_accessible_directory_p = intern ("file-accessible-directory-p"); |
4502 | Qfile_modes = intern ("file-modes"); | |
4503 | Qset_file_modes = intern ("set-file-modes"); | |
4504 | Qfile_newer_than_file_p = intern ("file-newer-than-file-p"); | |
4505 | Qinsert_file_contents = intern ("insert-file-contents"); | |
4506 | Qwrite_region = intern ("write-region"); | |
4507 | Qverify_visited_file_modtime = intern ("verify-visited-file-modtime"); | |
3ec46acd | 4508 | Qset_visited_file_modtime = intern ("set-visited-file-modtime"); |
32f4334d | 4509 | |
642ef245 | 4510 | staticpro (&Qexpand_file_name); |
273e0829 | 4511 | staticpro (&Qsubstitute_in_file_name); |
642ef245 JB |
4512 | staticpro (&Qdirectory_file_name); |
4513 | staticpro (&Qfile_name_directory); | |
4514 | staticpro (&Qfile_name_nondirectory); | |
4515 | staticpro (&Qunhandled_file_name_directory); | |
4516 | staticpro (&Qfile_name_as_directory); | |
15c65264 | 4517 | staticpro (&Qcopy_file); |
c34b559d | 4518 | staticpro (&Qmake_directory_internal); |
15c65264 RS |
4519 | staticpro (&Qdelete_directory); |
4520 | staticpro (&Qdelete_file); | |
4521 | staticpro (&Qrename_file); | |
4522 | staticpro (&Qadd_name_to_file); | |
4523 | staticpro (&Qmake_symbolic_link); | |
4524 | staticpro (&Qfile_exists_p); | |
4525 | staticpro (&Qfile_executable_p); | |
4526 | staticpro (&Qfile_readable_p); | |
4527 | staticpro (&Qfile_symlink_p); | |
4528 | staticpro (&Qfile_writable_p); | |
4529 | staticpro (&Qfile_directory_p); | |
adedc71d | 4530 | staticpro (&Qfile_regular_p); |
15c65264 RS |
4531 | staticpro (&Qfile_accessible_directory_p); |
4532 | staticpro (&Qfile_modes); | |
4533 | staticpro (&Qset_file_modes); | |
4534 | staticpro (&Qfile_newer_than_file_p); | |
4535 | staticpro (&Qinsert_file_contents); | |
4536 | staticpro (&Qwrite_region); | |
4537 | staticpro (&Qverify_visited_file_modtime); | |
642ef245 JB |
4538 | |
4539 | Qfile_name_history = intern ("file-name-history"); | |
4540 | Fset (Qfile_name_history, Qnil); | |
15c65264 RS |
4541 | staticpro (&Qfile_name_history); |
4542 | ||
570d7624 JB |
4543 | Qfile_error = intern ("file-error"); |
4544 | staticpro (&Qfile_error); | |
199607e4 | 4545 | Qfile_already_exists = intern ("file-already-exists"); |
570d7624 JB |
4546 | staticpro (&Qfile_already_exists); |
4547 | ||
5e570b75 | 4548 | #ifdef DOS_NT |
4c3c22f3 RS |
4549 | Qfind_buffer_file_type = intern ("find-buffer-file-type"); |
4550 | staticpro (&Qfind_buffer_file_type); | |
5e570b75 | 4551 | #endif /* DOS_NT */ |
4c3c22f3 | 4552 | |
0d420e88 | 4553 | DEFVAR_LISP ("auto-save-file-format", &Vauto_save_file_format, |
824a483f | 4554 | "*Format in which to write auto-save files.\n\ |
0d420e88 BG |
4555 | Should be a list of symbols naming formats that are defined in `format-alist'.\n\ |
4556 | If it is t, which is the default, auto-save files are written in the\n\ | |
4557 | same format as a regular save would use."); | |
4558 | Vauto_save_file_format = Qt; | |
4559 | ||
4560 | Qformat_decode = intern ("format-decode"); | |
4561 | staticpro (&Qformat_decode); | |
4562 | Qformat_annotate_function = intern ("format-annotate-function"); | |
4563 | staticpro (&Qformat_annotate_function); | |
4564 | ||
d6a3cc15 RS |
4565 | Qcar_less_than_car = intern ("car-less-than-car"); |
4566 | staticpro (&Qcar_less_than_car); | |
4567 | ||
570d7624 JB |
4568 | Fput (Qfile_error, Qerror_conditions, |
4569 | Fcons (Qfile_error, Fcons (Qerror, Qnil))); | |
4570 | Fput (Qfile_error, Qerror_message, | |
4571 | build_string ("File error")); | |
4572 | ||
4573 | Fput (Qfile_already_exists, Qerror_conditions, | |
4574 | Fcons (Qfile_already_exists, | |
4575 | Fcons (Qfile_error, Fcons (Qerror, Qnil)))); | |
4576 | Fput (Qfile_already_exists, Qerror_message, | |
4577 | build_string ("File already exists")); | |
4578 | ||
4579 | DEFVAR_BOOL ("insert-default-directory", &insert_default_directory, | |
4580 | "*Non-nil means when reading a filename start with default dir in minibuffer."); | |
4581 | insert_default_directory = 1; | |
4582 | ||
4583 | DEFVAR_BOOL ("vms-stmlf-recfm", &vms_stmlf_recfm, | |
4584 | "*Non-nil means write new files with record format `stmlf'.\n\ | |
4585 | nil means use format `var'. This variable is meaningful only on VMS."); | |
4586 | vms_stmlf_recfm = 0; | |
4587 | ||
199607e4 RS |
4588 | DEFVAR_LISP ("directory-sep-char", &Vdirectory_sep_char, |
4589 | "Directory separator character for built-in functions that return file names.\n\ | |
4590 | The value should be either ?/ or ?\\ (any other value is treated as ?\\).\n\ | |
4591 | This variable affects the built-in functions only on Windows,\n\ | |
4592 | on other platforms, it is initialized so that Lisp code can find out\n\ | |
4593 | what the normal separator is."); | |
4594 | Vdirectory_sep_char = '/'; | |
4595 | ||
1d1826db RS |
4596 | DEFVAR_LISP ("file-name-handler-alist", &Vfile_name_handler_alist, |
4597 | "*Alist of elements (REGEXP . HANDLER) for file names handled specially.\n\ | |
4598 | If a file name matches REGEXP, then all I/O on that file is done by calling\n\ | |
4599 | HANDLER.\n\ | |
4600 | \n\ | |
4601 | The first argument given to HANDLER is the name of the I/O primitive\n\ | |
4602 | to be handled; the remaining arguments are the arguments that were\n\ | |
4603 | passed to that primitive. For example, if you do\n\ | |
4604 | (file-exists-p FILENAME)\n\ | |
4605 | and FILENAME is handled by HANDLER, then HANDLER is called like this:\n\ | |
642ef245 JB |
4606 | (funcall HANDLER 'file-exists-p FILENAME)\n\ |
4607 | The function `find-file-name-handler' checks this list for a handler\n\ | |
4608 | for its argument."); | |
09121adc RS |
4609 | Vfile_name_handler_alist = Qnil; |
4610 | ||
d6a3cc15 | 4611 | DEFVAR_LISP ("after-insert-file-functions", &Vafter_insert_file_functions, |
246cfea5 RS |
4612 | "A list of functions to be called at the end of `insert-file-contents'.\n\ |
4613 | Each is passed one argument, the number of bytes inserted. It should return\n\ | |
4614 | the new byte count, and leave point the same. If `insert-file-contents' is\n\ | |
4615 | intercepted by a handler from `file-name-handler-alist', that handler is\n\ | |
d6a3cc15 RS |
4616 | responsible for calling the after-insert-file-functions if appropriate."); |
4617 | Vafter_insert_file_functions = Qnil; | |
4618 | ||
4619 | DEFVAR_LISP ("write-region-annotate-functions", &Vwrite_region_annotate_functions, | |
246cfea5 | 4620 | "A list of functions to be called at the start of `write-region'.\n\ |
568aa585 RS |
4621 | Each is passed two arguments, START and END as for `write-region'.\n\ |
4622 | These are usually two numbers but not always; see the documentation\n\ | |
4623 | for `write-region'. The function should return a list of pairs\n\ | |
4624 | of the form (POSITION . STRING), consisting of strings to be effectively\n\ | |
246cfea5 RS |
4625 | inserted at the specified positions of the file being written (1 means to\n\ |
4626 | insert before the first byte written). The POSITIONs must be sorted into\n\ | |
4627 | increasing order. If there are several functions in the list, the several\n\ | |
d6a3cc15 RS |
4628 | lists are merged destructively."); |
4629 | Vwrite_region_annotate_functions = Qnil; | |
4630 | ||
6fc6f94b RS |
4631 | DEFVAR_LISP ("write-region-annotations-so-far", |
4632 | &Vwrite_region_annotations_so_far, | |
4633 | "When an annotation function is called, this holds the previous annotations.\n\ | |
4634 | These are the annotations made by other annotation functions\n\ | |
4635 | that were already called. See also `write-region-annotate-functions'."); | |
4636 | Vwrite_region_annotations_so_far = Qnil; | |
4637 | ||
82c2d839 | 4638 | DEFVAR_LISP ("inhibit-file-name-handlers", &Vinhibit_file_name_handlers, |
268466ed | 4639 | "A list of file name handlers that temporarily should not be used.\n\ |
e3e86241 | 4640 | This applies only to the operation `inhibit-file-name-operation'."); |
82c2d839 RS |
4641 | Vinhibit_file_name_handlers = Qnil; |
4642 | ||
a65970a0 RS |
4643 | DEFVAR_LISP ("inhibit-file-name-operation", &Vinhibit_file_name_operation, |
4644 | "The operation for which `inhibit-file-name-handlers' is applicable."); | |
4645 | Vinhibit_file_name_operation = Qnil; | |
4646 | ||
e54d3b5d | 4647 | DEFVAR_LISP ("auto-save-list-file-name", &Vauto_save_list_file_name, |
51931aca KH |
4648 | "File name in which we write a list of all auto save file names.\n\ |
4649 | This variable is initialized automatically from `auto-save-list-file-prefix'\n\ | |
4650 | shortly after Emacs reads your `.emacs' file, if you have not yet given it\n\ | |
4651 | a non-nil value."); | |
e54d3b5d RS |
4652 | Vauto_save_list_file_name = Qnil; |
4653 | ||
642ef245 | 4654 | defsubr (&Sfind_file_name_handler); |
570d7624 JB |
4655 | defsubr (&Sfile_name_directory); |
4656 | defsubr (&Sfile_name_nondirectory); | |
642ef245 | 4657 | defsubr (&Sunhandled_file_name_directory); |
570d7624 JB |
4658 | defsubr (&Sfile_name_as_directory); |
4659 | defsubr (&Sdirectory_file_name); | |
4660 | defsubr (&Smake_temp_name); | |
4661 | defsubr (&Sexpand_file_name); | |
4662 | defsubr (&Ssubstitute_in_file_name); | |
4663 | defsubr (&Scopy_file); | |
9bbe01fb | 4664 | defsubr (&Smake_directory_internal); |
aa734e17 | 4665 | defsubr (&Sdelete_directory); |
570d7624 JB |
4666 | defsubr (&Sdelete_file); |
4667 | defsubr (&Srename_file); | |
4668 | defsubr (&Sadd_name_to_file); | |
4669 | #ifdef S_IFLNK | |
4670 | defsubr (&Smake_symbolic_link); | |
4671 | #endif /* S_IFLNK */ | |
4672 | #ifdef VMS | |
4673 | defsubr (&Sdefine_logical_name); | |
4674 | #endif /* VMS */ | |
4675 | #ifdef HPUX_NET | |
4676 | defsubr (&Ssysnetunam); | |
4677 | #endif /* HPUX_NET */ | |
4678 | defsubr (&Sfile_name_absolute_p); | |
4679 | defsubr (&Sfile_exists_p); | |
4680 | defsubr (&Sfile_executable_p); | |
4681 | defsubr (&Sfile_readable_p); | |
4682 | defsubr (&Sfile_writable_p); | |
4683 | defsubr (&Sfile_symlink_p); | |
4684 | defsubr (&Sfile_directory_p); | |
b72dea2a | 4685 | defsubr (&Sfile_accessible_directory_p); |
f793dc6c | 4686 | defsubr (&Sfile_regular_p); |
570d7624 JB |
4687 | defsubr (&Sfile_modes); |
4688 | defsubr (&Sset_file_modes); | |
c24e9a53 RS |
4689 | defsubr (&Sset_default_file_modes); |
4690 | defsubr (&Sdefault_file_modes); | |
570d7624 JB |
4691 | defsubr (&Sfile_newer_than_file_p); |
4692 | defsubr (&Sinsert_file_contents); | |
4693 | defsubr (&Swrite_region); | |
d6a3cc15 | 4694 | defsubr (&Scar_less_than_car); |
570d7624 JB |
4695 | defsubr (&Sverify_visited_file_modtime); |
4696 | defsubr (&Sclear_visited_file_modtime); | |
f5d5eccf | 4697 | defsubr (&Svisited_file_modtime); |
570d7624 JB |
4698 | defsubr (&Sset_visited_file_modtime); |
4699 | defsubr (&Sdo_auto_save); | |
4700 | defsubr (&Sset_buffer_auto_saved); | |
b60247d9 | 4701 | defsubr (&Sclear_buffer_auto_save_failure); |
570d7624 JB |
4702 | defsubr (&Srecent_auto_save_p); |
4703 | ||
4704 | defsubr (&Sread_file_name_internal); | |
4705 | defsubr (&Sread_file_name); | |
85ffea93 | 4706 | |
483a2e10 | 4707 | #ifdef unix |
85ffea93 | 4708 | defsubr (&Sunix_sync); |
483a2e10 | 4709 | #endif |
570d7624 | 4710 | } |