Commit | Line | Data |
---|---|---|
570d7624 | 1 | /* File IO for GNU Emacs. |
4746118a | 2 | Copyright (C) 1985, 1986, 1987, 1988, 1992 Free Software Foundation, Inc. |
570d7624 JB |
3 | |
4 | This file is part of GNU Emacs. | |
5 | ||
6 | GNU Emacs is free software; you can redistribute it and/or modify | |
7 | it under the terms of the GNU General Public License as published by | |
4746118a | 8 | the Free Software Foundation; either version 2, or (at your option) |
570d7624 JB |
9 | any later version. |
10 | ||
11 | GNU Emacs is distributed in the hope that it will be useful, | |
12 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
13 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
14 | GNU General Public License for more details. | |
15 | ||
16 | You should have received a copy of the GNU General Public License | |
17 | along with GNU Emacs; see the file COPYING. If not, write to | |
18 | the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA. */ | |
19 | ||
ffd56f97 | 20 | #include "config.h" |
570d7624 JB |
21 | |
22 | #include <sys/types.h> | |
23 | #include <sys/stat.h> | |
bfb61299 JB |
24 | |
25 | #ifdef VMS | |
de5bf5d3 | 26 | #include "vms-pwd.h" |
bfb61299 | 27 | #else |
570d7624 | 28 | #include <pwd.h> |
bfb61299 JB |
29 | #endif |
30 | ||
570d7624 | 31 | #include <ctype.h> |
bfb61299 JB |
32 | |
33 | #ifdef VMS | |
34 | #include "dir.h" | |
35 | #include <perror.h> | |
36 | #include <stddef.h> | |
37 | #include <string.h> | |
bfb61299 JB |
38 | #endif |
39 | ||
570d7624 JB |
40 | #include <errno.h> |
41 | ||
bfb61299 | 42 | #ifndef vax11c |
570d7624 JB |
43 | extern int errno; |
44 | extern char *sys_errlist[]; | |
45 | extern int sys_nerr; | |
46 | #endif | |
47 | ||
48 | #define err_str(a) ((a) < sys_nerr ? sys_errlist[a] : "unknown error") | |
49 | ||
50 | #ifdef APOLLO | |
51 | #include <sys/time.h> | |
52 | #endif | |
53 | ||
570d7624 JB |
54 | #include "lisp.h" |
55 | #include "buffer.h" | |
56 | #include "window.h" | |
57 | ||
58 | #ifdef VMS | |
570d7624 JB |
59 | #include <file.h> |
60 | #include <rmsdef.h> | |
61 | #include <fab.h> | |
62 | #include <nam.h> | |
63 | #endif | |
64 | ||
de5bf5d3 | 65 | #include "systime.h" |
570d7624 JB |
66 | |
67 | #ifdef HPUX | |
68 | #include <netio.h> | |
9b7828a5 | 69 | #ifndef HPUX8 |
570d7624 JB |
70 | #include <errnet.h> |
71 | #endif | |
9b7828a5 | 72 | #endif |
570d7624 JB |
73 | |
74 | #ifndef O_WRONLY | |
75 | #define O_WRONLY 1 | |
76 | #endif | |
77 | ||
78 | #define min(a, b) ((a) < (b) ? (a) : (b)) | |
79 | #define max(a, b) ((a) > (b) ? (a) : (b)) | |
80 | ||
81 | /* Nonzero during writing of auto-save files */ | |
82 | int auto_saving; | |
83 | ||
84 | /* Set by auto_save_1 to mode of original file so Fwrite_region will create | |
85 | a new file with the same mode as the original */ | |
86 | int auto_save_mode_bits; | |
87 | ||
32f4334d RS |
88 | /* Alist of elements (REGEXP . HANDLER) for file names |
89 | whose I/O is done with a special handler. */ | |
90 | Lisp_Object Vfile_name_handler_alist; | |
91 | ||
570d7624 JB |
92 | /* Nonzero means, when reading a filename in the minibuffer, |
93 | start out by inserting the default directory into the minibuffer. */ | |
94 | int insert_default_directory; | |
95 | ||
96 | /* On VMS, nonzero means write new files with record format stmlf. | |
97 | Zero means use var format. */ | |
98 | int vms_stmlf_recfm; | |
99 | ||
100 | Lisp_Object Qfile_error, Qfile_already_exists; | |
101 | ||
15c65264 RS |
102 | Lisp_Object Qfile_name_history; |
103 | ||
570d7624 JB |
104 | report_file_error (string, data) |
105 | char *string; | |
106 | Lisp_Object data; | |
107 | { | |
108 | Lisp_Object errstring; | |
109 | ||
110 | if (errno >= 0 && errno < sys_nerr) | |
111 | errstring = build_string (sys_errlist[errno]); | |
112 | else | |
113 | errstring = build_string ("undocumented error code"); | |
114 | ||
115 | /* System error messages are capitalized. Downcase the initial | |
116 | unless it is followed by a slash. */ | |
117 | if (XSTRING (errstring)->data[1] != '/') | |
118 | XSTRING (errstring)->data[0] = DOWNCASE (XSTRING (errstring)->data[0]); | |
119 | ||
120 | while (1) | |
121 | Fsignal (Qfile_error, | |
122 | Fcons (build_string (string), Fcons (errstring, data))); | |
123 | } | |
b5148e85 RS |
124 | |
125 | close_file_unwind (fd) | |
126 | Lisp_Object fd; | |
127 | { | |
128 | close (XFASTINT (fd)); | |
129 | } | |
570d7624 | 130 | \f |
0bf2eed2 RS |
131 | Lisp_Object Qexpand_file_name; |
132 | Lisp_Object Qdirectory_file_name; | |
133 | Lisp_Object Qfile_name_directory; | |
134 | Lisp_Object Qfile_name_nondirectory; | |
135 | Lisp_Object Qfile_name_as_directory; | |
32f4334d RS |
136 | Lisp_Object Qcopy_file; |
137 | Lisp_Object Qmake_directory; | |
138 | Lisp_Object Qdelete_directory; | |
139 | Lisp_Object Qdelete_file; | |
140 | Lisp_Object Qrename_file; | |
141 | Lisp_Object Qadd_name_to_file; | |
142 | Lisp_Object Qmake_symbolic_link; | |
143 | Lisp_Object Qfile_exists_p; | |
144 | Lisp_Object Qfile_executable_p; | |
145 | Lisp_Object Qfile_readable_p; | |
146 | Lisp_Object Qfile_symlink_p; | |
147 | Lisp_Object Qfile_writable_p; | |
148 | Lisp_Object Qfile_directory_p; | |
149 | Lisp_Object Qfile_accessible_directory_p; | |
150 | Lisp_Object Qfile_modes; | |
151 | Lisp_Object Qset_file_modes; | |
152 | Lisp_Object Qfile_newer_than_file_p; | |
153 | Lisp_Object Qinsert_file_contents; | |
154 | Lisp_Object Qwrite_region; | |
155 | Lisp_Object Qverify_visited_file_modtime; | |
156 | ||
157 | /* If FILENAME is handled specially on account of its syntax, | |
158 | return its handler function. Otherwise, return nil. */ | |
159 | ||
160 | Lisp_Object | |
161 | find_file_handler (filename) | |
162 | Lisp_Object filename; | |
163 | { | |
164 | Lisp_Object chain; | |
3eac9910 | 165 | for (chain = Vfile_name_handler_alist; XTYPE (chain) == Lisp_Cons; |
32f4334d RS |
166 | chain = XCONS (chain)->cdr) |
167 | { | |
168 | Lisp_Object elt; | |
169 | elt = XCONS (chain)->car; | |
170 | if (XTYPE (elt) == Lisp_Cons) | |
171 | { | |
172 | Lisp_Object string; | |
173 | string = XCONS (elt)->car; | |
174 | if (XTYPE (string) == Lisp_String | |
09121adc | 175 | && fast_string_match (string, filename) >= 0) |
32f4334d RS |
176 | return XCONS (elt)->cdr; |
177 | } | |
178 | } | |
179 | return Qnil; | |
180 | } | |
181 | \f | |
570d7624 JB |
182 | DEFUN ("file-name-directory", Ffile_name_directory, Sfile_name_directory, |
183 | 1, 1, 0, | |
184 | "Return the directory component in file name NAME.\n\ | |
185 | Return nil if NAME does not include a directory.\n\ | |
186 | Otherwise return a directory spec.\n\ | |
187 | Given a Unix syntax file name, returns a string ending in slash;\n\ | |
188 | on VMS, perhaps instead a string ending in `:', `]' or `>'.") | |
189 | (file) | |
190 | Lisp_Object file; | |
191 | { | |
192 | register unsigned char *beg; | |
193 | register unsigned char *p; | |
0bf2eed2 | 194 | Lisp_Object handler; |
570d7624 JB |
195 | |
196 | CHECK_STRING (file, 0); | |
197 | ||
0bf2eed2 RS |
198 | /* If the file name has special constructs in it, |
199 | call the corresponding file handler. */ | |
200 | handler = find_file_handler (file); | |
201 | if (!NILP (handler)) | |
202 | return call2 (handler, Qfile_name_directory, file); | |
203 | ||
570d7624 JB |
204 | beg = XSTRING (file)->data; |
205 | p = beg + XSTRING (file)->size; | |
206 | ||
207 | while (p != beg && p[-1] != '/' | |
208 | #ifdef VMS | |
209 | && p[-1] != ':' && p[-1] != ']' && p[-1] != '>' | |
210 | #endif /* VMS */ | |
211 | ) p--; | |
212 | ||
213 | if (p == beg) | |
214 | return Qnil; | |
215 | return make_string (beg, p - beg); | |
216 | } | |
217 | ||
218 | DEFUN ("file-name-nondirectory", Ffile_name_nondirectory, Sfile_name_nondirectory, | |
219 | 1, 1, 0, | |
220 | "Return file name NAME sans its directory.\n\ | |
221 | For example, in a Unix-syntax file name,\n\ | |
222 | this is everything after the last slash,\n\ | |
223 | or the entire name if it contains no slash.") | |
224 | (file) | |
225 | Lisp_Object file; | |
226 | { | |
227 | register unsigned char *beg, *p, *end; | |
0bf2eed2 | 228 | Lisp_Object handler; |
570d7624 JB |
229 | |
230 | CHECK_STRING (file, 0); | |
231 | ||
0bf2eed2 RS |
232 | /* If the file name has special constructs in it, |
233 | call the corresponding file handler. */ | |
234 | handler = find_file_handler (file); | |
235 | if (!NILP (handler)) | |
236 | return call2 (handler, Qfile_name_nondirectory, file); | |
237 | ||
570d7624 JB |
238 | beg = XSTRING (file)->data; |
239 | end = p = beg + XSTRING (file)->size; | |
240 | ||
241 | while (p != beg && p[-1] != '/' | |
242 | #ifdef VMS | |
243 | && p[-1] != ':' && p[-1] != ']' && p[-1] != '>' | |
244 | #endif /* VMS */ | |
245 | ) p--; | |
246 | ||
247 | return make_string (p, end - p); | |
248 | } | |
249 | \f | |
250 | char * | |
251 | file_name_as_directory (out, in) | |
252 | char *out, *in; | |
253 | { | |
254 | int size = strlen (in) - 1; | |
255 | ||
256 | strcpy (out, in); | |
257 | ||
258 | #ifdef VMS | |
259 | /* Is it already a directory string? */ | |
260 | if (in[size] == ':' || in[size] == ']' || in[size] == '>') | |
261 | return out; | |
262 | /* Is it a VMS directory file name? If so, hack VMS syntax. */ | |
263 | else if (! index (in, '/') | |
264 | && ((size > 3 && ! strcmp (&in[size - 3], ".DIR")) | |
265 | || (size > 3 && ! strcmp (&in[size - 3], ".dir")) | |
266 | || (size > 5 && (! strncmp (&in[size - 5], ".DIR", 4) | |
267 | || ! strncmp (&in[size - 5], ".dir", 4)) | |
268 | && (in[size - 1] == '.' || in[size - 1] == ';') | |
269 | && in[size] == '1'))) | |
270 | { | |
271 | register char *p, *dot; | |
272 | char brack; | |
273 | ||
274 | /* x.dir -> [.x] | |
275 | dir:x.dir --> dir:[x] | |
276 | dir:[x]y.dir --> dir:[x.y] */ | |
277 | p = in + size; | |
278 | while (p != in && *p != ':' && *p != '>' && *p != ']') p--; | |
279 | if (p != in) | |
280 | { | |
281 | strncpy (out, in, p - in); | |
282 | out[p - in] = '\0'; | |
283 | if (*p == ':') | |
284 | { | |
285 | brack = ']'; | |
286 | strcat (out, ":["); | |
287 | } | |
288 | else | |
289 | { | |
290 | brack = *p; | |
291 | strcat (out, "."); | |
292 | } | |
293 | p++; | |
294 | } | |
295 | else | |
296 | { | |
297 | brack = ']'; | |
298 | strcpy (out, "[."); | |
299 | } | |
bfb61299 JB |
300 | dot = index (p, '.'); |
301 | if (dot) | |
570d7624 JB |
302 | { |
303 | /* blindly remove any extension */ | |
304 | size = strlen (out) + (dot - p); | |
305 | strncat (out, p, dot - p); | |
306 | } | |
307 | else | |
308 | { | |
309 | strcat (out, p); | |
310 | size = strlen (out); | |
311 | } | |
312 | out[size++] = brack; | |
313 | out[size] = '\0'; | |
314 | } | |
315 | #else /* not VMS */ | |
316 | /* For Unix syntax, Append a slash if necessary */ | |
317 | if (out[size] != '/') | |
318 | strcat (out, "/"); | |
319 | #endif /* not VMS */ | |
320 | return out; | |
321 | } | |
322 | ||
323 | DEFUN ("file-name-as-directory", Ffile_name_as_directory, | |
324 | Sfile_name_as_directory, 1, 1, 0, | |
325 | "Return a string representing file FILENAME interpreted as a directory.\n\ | |
326 | This operation exists because a directory is also a file, but its name as\n\ | |
327 | a directory is different from its name as a file.\n\ | |
328 | The result can be used as the value of `default-directory'\n\ | |
329 | or passed as second argument to `expand-file-name'.\n\ | |
330 | For a Unix-syntax file name, just appends a slash.\n\ | |
331 | On VMS, converts \"[X]FOO.DIR\" to \"[X.FOO]\", etc.") | |
332 | (file) | |
333 | Lisp_Object file; | |
334 | { | |
335 | char *buf; | |
0bf2eed2 | 336 | Lisp_Object handler; |
570d7624 JB |
337 | |
338 | CHECK_STRING (file, 0); | |
265a9e55 | 339 | if (NILP (file)) |
570d7624 | 340 | return Qnil; |
0bf2eed2 RS |
341 | |
342 | /* If the file name has special constructs in it, | |
343 | call the corresponding file handler. */ | |
344 | handler = find_file_handler (file); | |
345 | if (!NILP (handler)) | |
346 | return call2 (handler, Qfile_name_as_directory, file); | |
347 | ||
570d7624 JB |
348 | buf = (char *) alloca (XSTRING (file)->size + 10); |
349 | return build_string (file_name_as_directory (buf, XSTRING (file)->data)); | |
350 | } | |
351 | \f | |
352 | /* | |
353 | * Convert from directory name to filename. | |
354 | * On VMS: | |
355 | * xyzzy:[mukesh.emacs] => xyzzy:[mukesh]emacs.dir.1 | |
356 | * xyzzy:[mukesh] => xyzzy:[000000]mukesh.dir.1 | |
357 | * On UNIX, it's simple: just make sure there is a terminating / | |
358 | ||
359 | * Value is nonzero if the string output is different from the input. | |
360 | */ | |
361 | ||
362 | directory_file_name (src, dst) | |
363 | char *src, *dst; | |
364 | { | |
365 | long slen; | |
366 | #ifdef VMS | |
367 | long rlen; | |
368 | char * ptr, * rptr; | |
369 | char bracket; | |
370 | struct FAB fab = cc$rms_fab; | |
371 | struct NAM nam = cc$rms_nam; | |
372 | char esa[NAM$C_MAXRSS]; | |
373 | #endif /* VMS */ | |
374 | ||
375 | slen = strlen (src); | |
376 | #ifdef VMS | |
377 | if (! index (src, '/') | |
378 | && (src[slen - 1] == ']' | |
379 | || src[slen - 1] == ':' | |
380 | || src[slen - 1] == '>')) | |
381 | { | |
382 | /* VMS style - convert [x.y.z] to [x.y]z, [x] to [000000]x */ | |
383 | fab.fab$l_fna = src; | |
384 | fab.fab$b_fns = slen; | |
385 | fab.fab$l_nam = &nam; | |
386 | fab.fab$l_fop = FAB$M_NAM; | |
387 | ||
388 | nam.nam$l_esa = esa; | |
389 | nam.nam$b_ess = sizeof esa; | |
390 | nam.nam$b_nop |= NAM$M_SYNCHK; | |
391 | ||
392 | /* We call SYS$PARSE to handle such things as [--] for us. */ | |
393 | if (SYS$PARSE(&fab, 0, 0) == RMS$_NORMAL) | |
394 | { | |
395 | slen = nam.nam$b_esl; | |
396 | if (esa[slen - 1] == ';' && esa[slen - 2] == '.') | |
397 | slen -= 2; | |
398 | esa[slen] = '\0'; | |
399 | src = esa; | |
400 | } | |
401 | if (src[slen - 1] != ']' && src[slen - 1] != '>') | |
402 | { | |
403 | /* what about when we have logical_name:???? */ | |
404 | if (src[slen - 1] == ':') | |
405 | { /* Xlate logical name and see what we get */ | |
406 | ptr = strcpy (dst, src); /* upper case for getenv */ | |
407 | while (*ptr) | |
408 | { | |
409 | if ('a' <= *ptr && *ptr <= 'z') | |
410 | *ptr -= 040; | |
411 | ptr++; | |
412 | } | |
413 | dst[slen - 1] = 0; /* remove colon */ | |
414 | if (!(src = egetenv (dst))) | |
415 | return 0; | |
416 | /* should we jump to the beginning of this procedure? | |
417 | Good points: allows us to use logical names that xlate | |
418 | to Unix names, | |
419 | Bad points: can be a problem if we just translated to a device | |
420 | name... | |
421 | For now, I'll punt and always expect VMS names, and hope for | |
422 | the best! */ | |
423 | slen = strlen (src); | |
424 | if (src[slen - 1] != ']' && src[slen - 1] != '>') | |
425 | { /* no recursion here! */ | |
426 | strcpy (dst, src); | |
427 | return 0; | |
428 | } | |
429 | } | |
430 | else | |
431 | { /* not a directory spec */ | |
432 | strcpy (dst, src); | |
433 | return 0; | |
434 | } | |
435 | } | |
436 | bracket = src[slen - 1]; | |
437 | ||
438 | /* If bracket is ']' or '>', bracket - 2 is the corresponding | |
439 | opening bracket. */ | |
bfb61299 JB |
440 | ptr = index (src, bracket - 2); |
441 | if (ptr == 0) | |
570d7624 JB |
442 | { /* no opening bracket */ |
443 | strcpy (dst, src); | |
444 | return 0; | |
445 | } | |
446 | if (!(rptr = rindex (src, '.'))) | |
447 | rptr = ptr; | |
448 | slen = rptr - src; | |
449 | strncpy (dst, src, slen); | |
450 | dst[slen] = '\0'; | |
451 | if (*rptr == '.') | |
452 | { | |
453 | dst[slen++] = bracket; | |
454 | dst[slen] = '\0'; | |
455 | } | |
456 | else | |
457 | { | |
458 | /* If we have the top-level of a rooted directory (i.e. xx:[000000]), | |
459 | then translate the device and recurse. */ | |
460 | if (dst[slen - 1] == ':' | |
461 | && dst[slen - 2] != ':' /* skip decnet nodes */ | |
462 | && strcmp(src + slen, "[000000]") == 0) | |
463 | { | |
464 | dst[slen - 1] = '\0'; | |
465 | if ((ptr = egetenv (dst)) | |
466 | && (rlen = strlen (ptr) - 1) > 0 | |
467 | && (ptr[rlen] == ']' || ptr[rlen] == '>') | |
468 | && ptr[rlen - 1] == '.') | |
469 | { | |
470 | ptr[rlen - 1] = ']'; | |
471 | ptr[rlen] = '\0'; | |
472 | return directory_file_name (ptr, dst); | |
473 | } | |
474 | else | |
475 | dst[slen - 1] = ':'; | |
476 | } | |
477 | strcat (dst, "[000000]"); | |
478 | slen += 8; | |
479 | } | |
480 | rptr++; | |
481 | rlen = strlen (rptr) - 1; | |
482 | strncat (dst, rptr, rlen); | |
483 | dst[slen + rlen] = '\0'; | |
484 | strcat (dst, ".DIR.1"); | |
485 | return 1; | |
486 | } | |
487 | #endif /* VMS */ | |
488 | /* Process as Unix format: just remove any final slash. | |
489 | But leave "/" unchanged; do not change it to "". */ | |
490 | strcpy (dst, src); | |
4746118a | 491 | if (slen > 1 && dst[slen - 1] == '/') |
570d7624 JB |
492 | dst[slen - 1] = 0; |
493 | return 1; | |
494 | } | |
495 | ||
496 | DEFUN ("directory-file-name", Fdirectory_file_name, Sdirectory_file_name, | |
497 | 1, 1, 0, | |
498 | "Returns the file name of the directory named DIR.\n\ | |
499 | This is the name of the file that holds the data for the directory DIR.\n\ | |
500 | This operation exists because a directory is also a file, but its name as\n\ | |
501 | a directory is different from its name as a file.\n\ | |
502 | In Unix-syntax, this function just removes the final slash.\n\ | |
503 | On VMS, given a VMS-syntax directory name such as \"[X.Y]\",\n\ | |
504 | it returns a file name such as \"[X]Y.DIR.1\".") | |
505 | (directory) | |
506 | Lisp_Object directory; | |
507 | { | |
508 | char *buf; | |
0bf2eed2 | 509 | Lisp_Object handler; |
570d7624 JB |
510 | |
511 | CHECK_STRING (directory, 0); | |
512 | ||
265a9e55 | 513 | if (NILP (directory)) |
570d7624 | 514 | return Qnil; |
0bf2eed2 RS |
515 | |
516 | /* If the file name has special constructs in it, | |
517 | call the corresponding file handler. */ | |
518 | handler = find_file_handler (directory); | |
519 | if (!NILP (handler)) | |
520 | return call2 (handler, Qdirectory_file_name, directory); | |
521 | ||
570d7624 JB |
522 | #ifdef VMS |
523 | /* 20 extra chars is insufficient for VMS, since we might perform a | |
524 | logical name translation. an equivalence string can be up to 255 | |
525 | chars long, so grab that much extra space... - sss */ | |
526 | buf = (char *) alloca (XSTRING (directory)->size + 20 + 255); | |
527 | #else | |
528 | buf = (char *) alloca (XSTRING (directory)->size + 20); | |
529 | #endif | |
530 | directory_file_name (XSTRING (directory)->data, buf); | |
531 | return build_string (buf); | |
532 | } | |
533 | ||
534 | DEFUN ("make-temp-name", Fmake_temp_name, Smake_temp_name, 1, 1, 0, | |
535 | "Generate temporary file name (string) starting with PREFIX (a string).\n\ | |
536 | The Emacs process number forms part of the result,\n\ | |
537 | so there is no danger of generating a name being used by another process.") | |
538 | (prefix) | |
539 | Lisp_Object prefix; | |
540 | { | |
541 | Lisp_Object val; | |
542 | val = concat2 (prefix, build_string ("XXXXXX")); | |
543 | mktemp (XSTRING (val)->data); | |
544 | return val; | |
545 | } | |
546 | \f | |
547 | DEFUN ("expand-file-name", Fexpand_file_name, Sexpand_file_name, 1, 2, 0, | |
548 | "Convert FILENAME to absolute, and canonicalize it.\n\ | |
549 | Second arg DEFAULT is directory to start with if FILENAME is relative\n\ | |
550 | (does not start with slash); if DEFAULT is nil or missing,\n\ | |
551 | the current buffer's value of default-directory is used.\n\ | |
b72dea2a JB |
552 | Path components that are `.' are removed, and \n\ |
553 | path components followed by `..' are removed, along with the `..' itself;\n\ | |
554 | note that these simplifications are done without checking the resulting\n\ | |
555 | paths in the file system.\n\ | |
556 | An initial `~/' expands to your home directory.\n\ | |
557 | An initial `~USER/' expands to USER's home directory.\n\ | |
570d7624 JB |
558 | See also the function `substitute-in-file-name'.") |
559 | (name, defalt) | |
560 | Lisp_Object name, defalt; | |
561 | { | |
562 | unsigned char *nm; | |
563 | ||
564 | register unsigned char *newdir, *p, *o; | |
565 | int tlen; | |
566 | unsigned char *target; | |
567 | struct passwd *pw; | |
568 | int lose; | |
569 | #ifdef VMS | |
570 | unsigned char * colon = 0; | |
571 | unsigned char * close = 0; | |
572 | unsigned char * slash = 0; | |
573 | unsigned char * brack = 0; | |
574 | int lbrack = 0, rbrack = 0; | |
575 | int dots = 0; | |
576 | #endif /* VMS */ | |
0bf2eed2 | 577 | Lisp_Object handler; |
570d7624 JB |
578 | |
579 | CHECK_STRING (name, 0); | |
580 | ||
0bf2eed2 RS |
581 | /* If the file name has special constructs in it, |
582 | call the corresponding file handler. */ | |
583 | handler = find_file_handler (name); | |
584 | if (!NILP (handler)) | |
09121adc | 585 | return call3 (handler, Qexpand_file_name, name, defalt); |
0bf2eed2 | 586 | |
570d7624 JB |
587 | #ifdef VMS |
588 | /* Filenames on VMS are always upper case. */ | |
589 | name = Fupcase (name); | |
590 | #endif | |
591 | ||
592 | nm = XSTRING (name)->data; | |
593 | ||
594 | /* If nm is absolute, flush ...// and detect /./ and /../. | |
595 | If no /./ or /../ we can return right away. */ | |
596 | if ( | |
597 | nm[0] == '/' | |
598 | #ifdef VMS | |
599 | || index (nm, ':') | |
600 | #endif /* VMS */ | |
601 | ) | |
602 | { | |
603 | p = nm; | |
604 | lose = 0; | |
605 | while (*p) | |
606 | { | |
607 | if (p[0] == '/' && p[1] == '/' | |
608 | #ifdef APOLLO | |
609 | /* // at start of filename is meaningful on Apollo system */ | |
610 | && nm != p | |
611 | #endif /* APOLLO */ | |
612 | ) | |
613 | nm = p + 1; | |
614 | if (p[0] == '/' && p[1] == '~') | |
615 | nm = p + 1, lose = 1; | |
616 | if (p[0] == '/' && p[1] == '.' | |
617 | && (p[2] == '/' || p[2] == 0 | |
618 | || (p[2] == '.' && (p[3] == '/' || p[3] == 0)))) | |
619 | lose = 1; | |
620 | #ifdef VMS | |
621 | if (p[0] == '\\') | |
622 | lose = 1; | |
623 | if (p[0] == '/') { | |
624 | /* if dev:[dir]/, move nm to / */ | |
625 | if (!slash && p > nm && (brack || colon)) { | |
626 | nm = (brack ? brack + 1 : colon + 1); | |
627 | lbrack = rbrack = 0; | |
628 | brack = 0; | |
629 | colon = 0; | |
630 | } | |
631 | slash = p; | |
632 | } | |
633 | if (p[0] == '-') | |
634 | #ifndef VMS4_4 | |
635 | /* VMS pre V4.4,convert '-'s in filenames. */ | |
636 | if (lbrack == rbrack) | |
637 | { | |
638 | if (dots < 2) /* this is to allow negative version numbers */ | |
639 | p[0] = '_'; | |
640 | } | |
641 | else | |
642 | #endif /* VMS4_4 */ | |
643 | if (lbrack > rbrack && | |
644 | ((p[-1] == '.' || p[-1] == '[' || p[-1] == '<') && | |
645 | (p[1] == '.' || p[1] == ']' || p[1] == '>'))) | |
646 | lose = 1; | |
647 | #ifndef VMS4_4 | |
648 | else | |
649 | p[0] = '_'; | |
650 | #endif /* VMS4_4 */ | |
651 | /* count open brackets, reset close bracket pointer */ | |
652 | if (p[0] == '[' || p[0] == '<') | |
653 | lbrack++, brack = 0; | |
654 | /* count close brackets, set close bracket pointer */ | |
655 | if (p[0] == ']' || p[0] == '>') | |
656 | rbrack++, brack = p; | |
657 | /* detect ][ or >< */ | |
658 | if ((p[0] == ']' || p[0] == '>') && (p[1] == '[' || p[1] == '<')) | |
659 | lose = 1; | |
660 | if ((p[0] == ':' || p[0] == ']' || p[0] == '>') && p[1] == '~') | |
661 | nm = p + 1, lose = 1; | |
662 | if (p[0] == ':' && (colon || slash)) | |
663 | /* if dev1:[dir]dev2:, move nm to dev2: */ | |
664 | if (brack) | |
665 | { | |
666 | nm = brack + 1; | |
667 | brack = 0; | |
668 | } | |
669 | /* if /pathname/dev:, move nm to dev: */ | |
670 | else if (slash) | |
671 | nm = slash + 1; | |
672 | /* if node::dev:, move colon following dev */ | |
673 | else if (colon && colon[-1] == ':') | |
674 | colon = p; | |
675 | /* if dev1:dev2:, move nm to dev2: */ | |
676 | else if (colon && colon[-1] != ':') | |
677 | { | |
678 | nm = colon + 1; | |
679 | colon = 0; | |
680 | } | |
681 | if (p[0] == ':' && !colon) | |
682 | { | |
683 | if (p[1] == ':') | |
684 | p++; | |
685 | colon = p; | |
686 | } | |
687 | if (lbrack == rbrack) | |
688 | if (p[0] == ';') | |
689 | dots = 2; | |
690 | else if (p[0] == '.') | |
691 | dots++; | |
692 | #endif /* VMS */ | |
693 | p++; | |
694 | } | |
695 | if (!lose) | |
696 | { | |
697 | #ifdef VMS | |
698 | if (index (nm, '/')) | |
699 | return build_string (sys_translate_unix (nm)); | |
700 | #endif /* VMS */ | |
701 | if (nm == XSTRING (name)->data) | |
702 | return name; | |
703 | return build_string (nm); | |
704 | } | |
705 | } | |
706 | ||
707 | /* Now determine directory to start with and put it in newdir */ | |
708 | ||
709 | newdir = 0; | |
710 | ||
711 | if (nm[0] == '~') /* prefix ~ */ | |
712 | if (nm[1] == '/' | |
713 | #ifdef VMS | |
714 | || nm[1] == ':' | |
715 | #endif /* VMS */ | |
e5d77022 | 716 | || nm[1] == 0)/* ~ by itself */ |
570d7624 JB |
717 | { |
718 | if (!(newdir = (unsigned char *) egetenv ("HOME"))) | |
719 | newdir = (unsigned char *) ""; | |
720 | nm++; | |
721 | #ifdef VMS | |
722 | nm++; /* Don't leave the slash in nm. */ | |
723 | #endif /* VMS */ | |
724 | } | |
725 | else /* ~user/filename */ | |
726 | { | |
727 | for (p = nm; *p && (*p != '/' | |
728 | #ifdef VMS | |
729 | && *p != ':' | |
730 | #endif /* VMS */ | |
731 | ); p++); | |
732 | o = (unsigned char *) alloca (p - nm + 1); | |
733 | bcopy ((char *) nm, o, p - nm); | |
734 | o [p - nm] = 0; | |
735 | ||
736 | pw = (struct passwd *) getpwnam (o + 1); | |
e5d77022 JB |
737 | if (pw) |
738 | { | |
739 | newdir = (unsigned char *) pw -> pw_dir; | |
570d7624 | 740 | #ifdef VMS |
e5d77022 | 741 | nm = p + 1; /* skip the terminator */ |
570d7624 | 742 | #else |
e5d77022 | 743 | nm = p; |
570d7624 | 744 | #endif /* VMS */ |
e5d77022 JB |
745 | } |
746 | ||
747 | /* If we don't find a user of that name, leave the name | |
748 | unchanged; don't move nm forward to p. */ | |
570d7624 JB |
749 | } |
750 | ||
751 | if (nm[0] != '/' | |
752 | #ifdef VMS | |
753 | && !index (nm, ':') | |
754 | #endif /* not VMS */ | |
755 | && !newdir) | |
756 | { | |
265a9e55 | 757 | if (NILP (defalt)) |
570d7624 JB |
758 | defalt = current_buffer->directory; |
759 | CHECK_STRING (defalt, 1); | |
760 | newdir = XSTRING (defalt)->data; | |
761 | } | |
762 | ||
bfb61299 JB |
763 | if (newdir != 0) |
764 | { | |
765 | /* Get rid of any slash at the end of newdir. */ | |
766 | int length = strlen (newdir); | |
767 | if (newdir[length - 1] == '/') | |
768 | { | |
769 | unsigned char *temp = (unsigned char *) alloca (length); | |
770 | bcopy (newdir, temp, length - 1); | |
771 | temp[length - 1] = 0; | |
772 | newdir = temp; | |
773 | } | |
774 | tlen = length + 1; | |
775 | } | |
776 | else | |
777 | tlen = 0; | |
570d7624 | 778 | |
bfb61299 JB |
779 | /* Now concatenate the directory and name to new space in the stack frame */ |
780 | tlen += strlen (nm) + 1; | |
570d7624 JB |
781 | target = (unsigned char *) alloca (tlen); |
782 | *target = 0; | |
783 | ||
784 | if (newdir) | |
785 | { | |
786 | #ifndef VMS | |
787 | if (nm[0] == 0 || nm[0] == '/') | |
788 | strcpy (target, newdir); | |
789 | else | |
790 | #endif | |
791 | file_name_as_directory (target, newdir); | |
792 | } | |
793 | ||
794 | strcat (target, nm); | |
795 | #ifdef VMS | |
796 | if (index (target, '/')) | |
797 | strcpy (target, sys_translate_unix (target)); | |
798 | #endif /* VMS */ | |
799 | ||
800 | /* Now canonicalize by removing /. and /foo/.. if they appear */ | |
801 | ||
802 | p = target; | |
803 | o = target; | |
804 | ||
805 | while (*p) | |
806 | { | |
807 | #ifdef VMS | |
808 | if (*p != ']' && *p != '>' && *p != '-') | |
809 | { | |
810 | if (*p == '\\') | |
811 | p++; | |
812 | *o++ = *p++; | |
813 | } | |
814 | else if ((p[0] == ']' || p[0] == '>') && p[0] == p[1] + 2) | |
815 | /* brackets are offset from each other by 2 */ | |
816 | { | |
817 | p += 2; | |
818 | if (*p != '.' && *p != '-' && o[-1] != '.') | |
819 | /* convert [foo][bar] to [bar] */ | |
820 | while (o[-1] != '[' && o[-1] != '<') | |
821 | o--; | |
822 | else if (*p == '-' && *o != '.') | |
823 | *--p = '.'; | |
824 | } | |
825 | else if (p[0] == '-' && o[-1] == '.' && | |
826 | (p[1] == '.' || p[1] == ']' || p[1] == '>')) | |
827 | /* flush .foo.- ; leave - if stopped by '[' or '<' */ | |
828 | { | |
829 | do | |
830 | o--; | |
831 | while (o[-1] != '.' && o[-1] != '[' && o[-1] != '<'); | |
832 | if (p[1] == '.') /* foo.-.bar ==> bar*/ | |
833 | p += 2; | |
834 | else if (o[-1] == '.') /* '.foo.-]' ==> ']' */ | |
835 | p++, o--; | |
836 | /* else [foo.-] ==> [-] */ | |
837 | } | |
838 | else | |
839 | { | |
840 | #ifndef VMS4_4 | |
841 | if (*p == '-' && | |
842 | o[-1] != '[' && o[-1] != '<' && o[-1] != '.' && | |
843 | p[1] != ']' && p[1] != '>' && p[1] != '.') | |
844 | *p = '_'; | |
845 | #endif /* VMS4_4 */ | |
846 | *o++ = *p++; | |
847 | } | |
848 | #else /* not VMS */ | |
849 | if (*p != '/') | |
850 | { | |
851 | *o++ = *p++; | |
852 | } | |
853 | else if (!strncmp (p, "//", 2) | |
854 | #ifdef APOLLO | |
855 | /* // at start of filename is meaningful in Apollo system */ | |
856 | && o != target | |
857 | #endif /* APOLLO */ | |
858 | ) | |
859 | { | |
860 | o = target; | |
861 | p++; | |
862 | } | |
863 | else if (p[0] == '/' && p[1] == '.' && | |
864 | (p[2] == '/' || p[2] == 0)) | |
865 | p += 2; | |
866 | else if (!strncmp (p, "/..", 3) | |
867 | /* `/../' is the "superroot" on certain file systems. */ | |
868 | && o != target | |
869 | && (p[3] == '/' || p[3] == 0)) | |
870 | { | |
871 | while (o != target && *--o != '/') | |
872 | ; | |
873 | #ifdef APOLLO | |
874 | if (o == target + 1 && o[-1] == '/' && o[0] == '/') | |
875 | ++o; | |
876 | else | |
877 | #endif /* APOLLO */ | |
878 | if (o == target && *o == '/') | |
879 | ++o; | |
880 | p += 3; | |
881 | } | |
882 | else | |
883 | { | |
884 | *o++ = *p++; | |
885 | } | |
886 | #endif /* not VMS */ | |
887 | } | |
888 | ||
889 | return make_string (target, o - target); | |
890 | } | |
891 | #if 0 | |
e5d77022 JB |
892 | /* Changed this DEFUN to a DEAFUN, so as not to confuse `make-docfile'. |
893 | DEAFUN ("expand-file-name", Fexpand_file_name, Sexpand_file_name, 1, 2, 0, | |
570d7624 JB |
894 | "Convert FILENAME to absolute, and canonicalize it.\n\ |
895 | Second arg DEFAULT is directory to start with if FILENAME is relative\n\ | |
896 | (does not start with slash); if DEFAULT is nil or missing,\n\ | |
897 | the current buffer's value of default-directory is used.\n\ | |
898 | Filenames containing `.' or `..' as components are simplified;\n\ | |
899 | initial `~/' expands to your home directory.\n\ | |
900 | See also the function `substitute-in-file-name'.") | |
901 | (name, defalt) | |
902 | Lisp_Object name, defalt; | |
903 | { | |
904 | unsigned char *nm; | |
905 | ||
906 | register unsigned char *newdir, *p, *o; | |
907 | int tlen; | |
908 | unsigned char *target; | |
909 | struct passwd *pw; | |
910 | int lose; | |
911 | #ifdef VMS | |
912 | unsigned char * colon = 0; | |
913 | unsigned char * close = 0; | |
914 | unsigned char * slash = 0; | |
915 | unsigned char * brack = 0; | |
916 | int lbrack = 0, rbrack = 0; | |
917 | int dots = 0; | |
918 | #endif /* VMS */ | |
919 | ||
920 | CHECK_STRING (name, 0); | |
921 | ||
922 | #ifdef VMS | |
923 | /* Filenames on VMS are always upper case. */ | |
924 | name = Fupcase (name); | |
925 | #endif | |
926 | ||
927 | nm = XSTRING (name)->data; | |
928 | ||
929 | /* If nm is absolute, flush ...// and detect /./ and /../. | |
930 | If no /./ or /../ we can return right away. */ | |
931 | if ( | |
932 | nm[0] == '/' | |
933 | #ifdef VMS | |
934 | || index (nm, ':') | |
935 | #endif /* VMS */ | |
936 | ) | |
937 | { | |
938 | p = nm; | |
939 | lose = 0; | |
940 | while (*p) | |
941 | { | |
942 | if (p[0] == '/' && p[1] == '/' | |
943 | #ifdef APOLLO | |
944 | /* // at start of filename is meaningful on Apollo system */ | |
945 | && nm != p | |
946 | #endif /* APOLLO */ | |
947 | ) | |
948 | nm = p + 1; | |
949 | if (p[0] == '/' && p[1] == '~') | |
950 | nm = p + 1, lose = 1; | |
951 | if (p[0] == '/' && p[1] == '.' | |
952 | && (p[2] == '/' || p[2] == 0 | |
953 | || (p[2] == '.' && (p[3] == '/' || p[3] == 0)))) | |
954 | lose = 1; | |
955 | #ifdef VMS | |
956 | if (p[0] == '\\') | |
957 | lose = 1; | |
958 | if (p[0] == '/') { | |
959 | /* if dev:[dir]/, move nm to / */ | |
960 | if (!slash && p > nm && (brack || colon)) { | |
961 | nm = (brack ? brack + 1 : colon + 1); | |
962 | lbrack = rbrack = 0; | |
963 | brack = 0; | |
964 | colon = 0; | |
965 | } | |
966 | slash = p; | |
967 | } | |
968 | if (p[0] == '-') | |
969 | #ifndef VMS4_4 | |
970 | /* VMS pre V4.4,convert '-'s in filenames. */ | |
971 | if (lbrack == rbrack) | |
972 | { | |
973 | if (dots < 2) /* this is to allow negative version numbers */ | |
974 | p[0] = '_'; | |
975 | } | |
976 | else | |
977 | #endif /* VMS4_4 */ | |
978 | if (lbrack > rbrack && | |
979 | ((p[-1] == '.' || p[-1] == '[' || p[-1] == '<') && | |
980 | (p[1] == '.' || p[1] == ']' || p[1] == '>'))) | |
981 | lose = 1; | |
982 | #ifndef VMS4_4 | |
983 | else | |
984 | p[0] = '_'; | |
985 | #endif /* VMS4_4 */ | |
986 | /* count open brackets, reset close bracket pointer */ | |
987 | if (p[0] == '[' || p[0] == '<') | |
988 | lbrack++, brack = 0; | |
989 | /* count close brackets, set close bracket pointer */ | |
990 | if (p[0] == ']' || p[0] == '>') | |
991 | rbrack++, brack = p; | |
992 | /* detect ][ or >< */ | |
993 | if ((p[0] == ']' || p[0] == '>') && (p[1] == '[' || p[1] == '<')) | |
994 | lose = 1; | |
995 | if ((p[0] == ':' || p[0] == ']' || p[0] == '>') && p[1] == '~') | |
996 | nm = p + 1, lose = 1; | |
997 | if (p[0] == ':' && (colon || slash)) | |
998 | /* if dev1:[dir]dev2:, move nm to dev2: */ | |
999 | if (brack) | |
1000 | { | |
1001 | nm = brack + 1; | |
1002 | brack = 0; | |
1003 | } | |
1004 | /* if /pathname/dev:, move nm to dev: */ | |
1005 | else if (slash) | |
1006 | nm = slash + 1; | |
1007 | /* if node::dev:, move colon following dev */ | |
1008 | else if (colon && colon[-1] == ':') | |
1009 | colon = p; | |
1010 | /* if dev1:dev2:, move nm to dev2: */ | |
1011 | else if (colon && colon[-1] != ':') | |
1012 | { | |
1013 | nm = colon + 1; | |
1014 | colon = 0; | |
1015 | } | |
1016 | if (p[0] == ':' && !colon) | |
1017 | { | |
1018 | if (p[1] == ':') | |
1019 | p++; | |
1020 | colon = p; | |
1021 | } | |
1022 | if (lbrack == rbrack) | |
1023 | if (p[0] == ';') | |
1024 | dots = 2; | |
1025 | else if (p[0] == '.') | |
1026 | dots++; | |
1027 | #endif /* VMS */ | |
1028 | p++; | |
1029 | } | |
1030 | if (!lose) | |
1031 | { | |
1032 | #ifdef VMS | |
1033 | if (index (nm, '/')) | |
1034 | return build_string (sys_translate_unix (nm)); | |
1035 | #endif /* VMS */ | |
1036 | if (nm == XSTRING (name)->data) | |
1037 | return name; | |
1038 | return build_string (nm); | |
1039 | } | |
1040 | } | |
1041 | ||
1042 | /* Now determine directory to start with and put it in NEWDIR */ | |
1043 | ||
1044 | newdir = 0; | |
1045 | ||
1046 | if (nm[0] == '~') /* prefix ~ */ | |
1047 | if (nm[1] == '/' | |
1048 | #ifdef VMS | |
1049 | || nm[1] == ':' | |
1050 | #endif /* VMS */ | |
1051 | || nm[1] == 0)/* ~/filename */ | |
1052 | { | |
1053 | if (!(newdir = (unsigned char *) egetenv ("HOME"))) | |
1054 | newdir = (unsigned char *) ""; | |
1055 | nm++; | |
1056 | #ifdef VMS | |
1057 | nm++; /* Don't leave the slash in nm. */ | |
1058 | #endif /* VMS */ | |
1059 | } | |
1060 | else /* ~user/filename */ | |
1061 | { | |
1062 | /* Get past ~ to user */ | |
1063 | unsigned char *user = nm + 1; | |
1064 | /* Find end of name. */ | |
1065 | unsigned char *ptr = (unsigned char *) index (user, '/'); | |
1066 | int len = ptr ? ptr - user : strlen (user); | |
1067 | #ifdef VMS | |
1068 | unsigned char *ptr1 = index (user, ':'); | |
1069 | if (ptr1 != 0 && ptr1 - user < len) | |
1070 | len = ptr1 - user; | |
1071 | #endif /* VMS */ | |
1072 | /* Copy the user name into temp storage. */ | |
1073 | o = (unsigned char *) alloca (len + 1); | |
1074 | bcopy ((char *) user, o, len); | |
1075 | o[len] = 0; | |
1076 | ||
1077 | /* Look up the user name. */ | |
1078 | pw = (struct passwd *) getpwnam (o + 1); | |
1079 | if (!pw) | |
1080 | error ("\"%s\" isn't a registered user", o + 1); | |
1081 | ||
1082 | newdir = (unsigned char *) pw->pw_dir; | |
1083 | ||
1084 | /* Discard the user name from NM. */ | |
1085 | nm += len; | |
1086 | } | |
1087 | ||
1088 | if (nm[0] != '/' | |
1089 | #ifdef VMS | |
1090 | && !index (nm, ':') | |
1091 | #endif /* not VMS */ | |
1092 | && !newdir) | |
1093 | { | |
265a9e55 | 1094 | if (NILP (defalt)) |
570d7624 JB |
1095 | defalt = current_buffer->directory; |
1096 | CHECK_STRING (defalt, 1); | |
1097 | newdir = XSTRING (defalt)->data; | |
1098 | } | |
1099 | ||
1100 | /* Now concatenate the directory and name to new space in the stack frame */ | |
1101 | ||
1102 | tlen = (newdir ? strlen (newdir) + 1 : 0) + strlen (nm) + 1; | |
1103 | target = (unsigned char *) alloca (tlen); | |
1104 | *target = 0; | |
1105 | ||
1106 | if (newdir) | |
1107 | { | |
1108 | #ifndef VMS | |
1109 | if (nm[0] == 0 || nm[0] == '/') | |
1110 | strcpy (target, newdir); | |
1111 | else | |
1112 | #endif | |
1113 | file_name_as_directory (target, newdir); | |
1114 | } | |
1115 | ||
1116 | strcat (target, nm); | |
1117 | #ifdef VMS | |
1118 | if (index (target, '/')) | |
1119 | strcpy (target, sys_translate_unix (target)); | |
1120 | #endif /* VMS */ | |
1121 | ||
1122 | /* Now canonicalize by removing /. and /foo/.. if they appear */ | |
1123 | ||
1124 | p = target; | |
1125 | o = target; | |
1126 | ||
1127 | while (*p) | |
1128 | { | |
1129 | #ifdef VMS | |
1130 | if (*p != ']' && *p != '>' && *p != '-') | |
1131 | { | |
1132 | if (*p == '\\') | |
1133 | p++; | |
1134 | *o++ = *p++; | |
1135 | } | |
1136 | else if ((p[0] == ']' || p[0] == '>') && p[0] == p[1] + 2) | |
1137 | /* brackets are offset from each other by 2 */ | |
1138 | { | |
1139 | p += 2; | |
1140 | if (*p != '.' && *p != '-' && o[-1] != '.') | |
1141 | /* convert [foo][bar] to [bar] */ | |
1142 | while (o[-1] != '[' && o[-1] != '<') | |
1143 | o--; | |
1144 | else if (*p == '-' && *o != '.') | |
1145 | *--p = '.'; | |
1146 | } | |
1147 | else if (p[0] == '-' && o[-1] == '.' && | |
1148 | (p[1] == '.' || p[1] == ']' || p[1] == '>')) | |
1149 | /* flush .foo.- ; leave - if stopped by '[' or '<' */ | |
1150 | { | |
1151 | do | |
1152 | o--; | |
1153 | while (o[-1] != '.' && o[-1] != '[' && o[-1] != '<'); | |
1154 | if (p[1] == '.') /* foo.-.bar ==> bar*/ | |
1155 | p += 2; | |
1156 | else if (o[-1] == '.') /* '.foo.-]' ==> ']' */ | |
1157 | p++, o--; | |
1158 | /* else [foo.-] ==> [-] */ | |
1159 | } | |
1160 | else | |
1161 | { | |
1162 | #ifndef VMS4_4 | |
1163 | if (*p == '-' && | |
1164 | o[-1] != '[' && o[-1] != '<' && o[-1] != '.' && | |
1165 | p[1] != ']' && p[1] != '>' && p[1] != '.') | |
1166 | *p = '_'; | |
1167 | #endif /* VMS4_4 */ | |
1168 | *o++ = *p++; | |
1169 | } | |
1170 | #else /* not VMS */ | |
1171 | if (*p != '/') | |
1172 | { | |
1173 | *o++ = *p++; | |
1174 | } | |
1175 | else if (!strncmp (p, "//", 2) | |
1176 | #ifdef APOLLO | |
1177 | /* // at start of filename is meaningful in Apollo system */ | |
1178 | && o != target | |
1179 | #endif /* APOLLO */ | |
1180 | ) | |
1181 | { | |
1182 | o = target; | |
1183 | p++; | |
1184 | } | |
1185 | else if (p[0] == '/' && p[1] == '.' && | |
1186 | (p[2] == '/' || p[2] == 0)) | |
1187 | p += 2; | |
1188 | else if (!strncmp (p, "/..", 3) | |
1189 | /* `/../' is the "superroot" on certain file systems. */ | |
1190 | && o != target | |
1191 | && (p[3] == '/' || p[3] == 0)) | |
1192 | { | |
1193 | while (o != target && *--o != '/') | |
1194 | ; | |
1195 | #ifdef APOLLO | |
1196 | if (o == target + 1 && o[-1] == '/' && o[0] == '/') | |
1197 | ++o; | |
1198 | else | |
1199 | #endif /* APOLLO */ | |
1200 | if (o == target && *o == '/') | |
1201 | ++o; | |
1202 | p += 3; | |
1203 | } | |
1204 | else | |
1205 | { | |
1206 | *o++ = *p++; | |
1207 | } | |
1208 | #endif /* not VMS */ | |
1209 | } | |
1210 | ||
1211 | return make_string (target, o - target); | |
1212 | } | |
1213 | #endif | |
1214 | \f | |
1215 | DEFUN ("substitute-in-file-name", Fsubstitute_in_file_name, | |
1216 | Ssubstitute_in_file_name, 1, 1, 0, | |
1217 | "Substitute environment variables referred to in FILENAME.\n\ | |
1218 | `$FOO' where FOO is an environment variable name means to substitute\n\ | |
1219 | the value of that variable. The variable name should be terminated\n\ | |
1220 | with a character not a letter, digit or underscore; otherwise, enclose\n\ | |
1221 | the entire variable name in braces.\n\ | |
1222 | If `/~' appears, all of FILENAME through that `/' is discarded.\n\n\ | |
1223 | On VMS, `$' substitution is not done; this function does little and only\n\ | |
1224 | duplicates what `expand-file-name' does.") | |
1225 | (string) | |
1226 | Lisp_Object string; | |
1227 | { | |
1228 | unsigned char *nm; | |
1229 | ||
1230 | register unsigned char *s, *p, *o, *x, *endp; | |
1231 | unsigned char *target; | |
1232 | int total = 0; | |
1233 | int substituted = 0; | |
1234 | unsigned char *xnm; | |
1235 | ||
1236 | CHECK_STRING (string, 0); | |
1237 | ||
1238 | nm = XSTRING (string)->data; | |
1239 | endp = nm + XSTRING (string)->size; | |
1240 | ||
1241 | /* If /~ or // appears, discard everything through first slash. */ | |
1242 | ||
1243 | for (p = nm; p != endp; p++) | |
1244 | { | |
1245 | if ((p[0] == '~' || | |
1246 | #ifdef APOLLO | |
1247 | /* // at start of file name is meaningful in Apollo system */ | |
1248 | (p[0] == '/' && p - 1 != nm) | |
1249 | #else /* not APOLLO */ | |
1250 | p[0] == '/' | |
1251 | #endif /* not APOLLO */ | |
1252 | ) | |
1253 | && p != nm && | |
1254 | #ifdef VMS | |
1255 | (p[-1] == ':' || p[-1] == ']' || p[-1] == '>' || | |
1256 | #endif /* VMS */ | |
1257 | p[-1] == '/') | |
1258 | #ifdef VMS | |
1259 | ) | |
1260 | #endif /* VMS */ | |
1261 | { | |
1262 | nm = p; | |
1263 | substituted = 1; | |
1264 | } | |
1265 | } | |
1266 | ||
1267 | #ifdef VMS | |
1268 | return build_string (nm); | |
1269 | #else | |
1270 | ||
1271 | /* See if any variables are substituted into the string | |
1272 | and find the total length of their values in `total' */ | |
1273 | ||
1274 | for (p = nm; p != endp;) | |
1275 | if (*p != '$') | |
1276 | p++; | |
1277 | else | |
1278 | { | |
1279 | p++; | |
1280 | if (p == endp) | |
1281 | goto badsubst; | |
1282 | else if (*p == '$') | |
1283 | { | |
1284 | /* "$$" means a single "$" */ | |
1285 | p++; | |
1286 | total -= 1; | |
1287 | substituted = 1; | |
1288 | continue; | |
1289 | } | |
1290 | else if (*p == '{') | |
1291 | { | |
1292 | o = ++p; | |
1293 | while (p != endp && *p != '}') p++; | |
1294 | if (*p != '}') goto missingclose; | |
1295 | s = p; | |
1296 | } | |
1297 | else | |
1298 | { | |
1299 | o = p; | |
1300 | while (p != endp && (isalnum (*p) || *p == '_')) p++; | |
1301 | s = p; | |
1302 | } | |
1303 | ||
1304 | /* Copy out the variable name */ | |
1305 | target = (unsigned char *) alloca (s - o + 1); | |
1306 | strncpy (target, o, s - o); | |
1307 | target[s - o] = 0; | |
1308 | ||
1309 | /* Get variable value */ | |
1310 | o = (unsigned char *) egetenv (target); | |
1311 | /* The presence of this code makes vax 5.0 crash, for reasons yet unknown */ | |
1312 | #if 0 | |
1313 | #ifdef USG | |
1314 | if (!o && !strcmp (target, "USER")) | |
1315 | o = egetenv ("LOGNAME"); | |
1316 | #endif /* USG */ | |
1317 | #endif /* 0 */ | |
1318 | if (!o) goto badvar; | |
1319 | total += strlen (o); | |
1320 | substituted = 1; | |
1321 | } | |
1322 | ||
1323 | if (!substituted) | |
1324 | return string; | |
1325 | ||
1326 | /* If substitution required, recopy the string and do it */ | |
1327 | /* Make space in stack frame for the new copy */ | |
1328 | xnm = (unsigned char *) alloca (XSTRING (string)->size + total + 1); | |
1329 | x = xnm; | |
1330 | ||
1331 | /* Copy the rest of the name through, replacing $ constructs with values */ | |
1332 | for (p = nm; *p;) | |
1333 | if (*p != '$') | |
1334 | *x++ = *p++; | |
1335 | else | |
1336 | { | |
1337 | p++; | |
1338 | if (p == endp) | |
1339 | goto badsubst; | |
1340 | else if (*p == '$') | |
1341 | { | |
1342 | *x++ = *p++; | |
1343 | continue; | |
1344 | } | |
1345 | else if (*p == '{') | |
1346 | { | |
1347 | o = ++p; | |
1348 | while (p != endp && *p != '}') p++; | |
1349 | if (*p != '}') goto missingclose; | |
1350 | s = p++; | |
1351 | } | |
1352 | else | |
1353 | { | |
1354 | o = p; | |
1355 | while (p != endp && (isalnum (*p) || *p == '_')) p++; | |
1356 | s = p; | |
1357 | } | |
1358 | ||
1359 | /* Copy out the variable name */ | |
1360 | target = (unsigned char *) alloca (s - o + 1); | |
1361 | strncpy (target, o, s - o); | |
1362 | target[s - o] = 0; | |
1363 | ||
1364 | /* Get variable value */ | |
1365 | o = (unsigned char *) egetenv (target); | |
1366 | /* The presence of this code makes vax 5.0 crash, for reasons yet unknown */ | |
1367 | #if 0 | |
1368 | #ifdef USG | |
1369 | if (!o && !strcmp (target, "USER")) | |
1370 | o = egetenv ("LOGNAME"); | |
1371 | #endif /* USG */ | |
1372 | #endif /* 0 */ | |
1373 | if (!o) | |
1374 | goto badvar; | |
1375 | ||
1376 | strcpy (x, o); | |
1377 | x += strlen (o); | |
1378 | } | |
1379 | ||
1380 | *x = 0; | |
1381 | ||
1382 | /* If /~ or // appears, discard everything through first slash. */ | |
1383 | ||
1384 | for (p = xnm; p != x; p++) | |
1385 | if ((p[0] == '~' || | |
1386 | #ifdef APOLLO | |
1387 | /* // at start of file name is meaningful in Apollo system */ | |
1388 | (p[0] == '/' && p - 1 != xnm) | |
1389 | #else /* not APOLLO */ | |
1390 | p[0] == '/' | |
1391 | #endif /* not APOLLO */ | |
1392 | ) | |
1393 | && p != nm && p[-1] == '/') | |
1394 | xnm = p; | |
1395 | ||
1396 | return make_string (xnm, x - xnm); | |
1397 | ||
1398 | badsubst: | |
1399 | error ("Bad format environment-variable substitution"); | |
1400 | missingclose: | |
1401 | error ("Missing \"}\" in environment-variable substitution"); | |
1402 | badvar: | |
1403 | error ("Substituting nonexistent environment variable \"%s\"", target); | |
1404 | ||
1405 | /* NOTREACHED */ | |
1406 | #endif /* not VMS */ | |
1407 | } | |
1408 | \f | |
067ffa38 JB |
1409 | /* A slightly faster and more convenient way to get |
1410 | (directory-file-name (expand-file-name FOO)). The return value may | |
1411 | have had its last character zapped with a '\0' character, meaning | |
1412 | that it is acceptable to system calls, but not to other lisp | |
1413 | functions. Callers should make sure that the return value doesn't | |
1414 | escape. */ | |
1415 | ||
570d7624 JB |
1416 | Lisp_Object |
1417 | expand_and_dir_to_file (filename, defdir) | |
1418 | Lisp_Object filename, defdir; | |
1419 | { | |
1420 | register Lisp_Object abspath; | |
1421 | ||
1422 | abspath = Fexpand_file_name (filename, defdir); | |
1423 | #ifdef VMS | |
1424 | { | |
1425 | register int c = XSTRING (abspath)->data[XSTRING (abspath)->size - 1]; | |
1426 | if (c == ':' || c == ']' || c == '>') | |
1427 | abspath = Fdirectory_file_name (abspath); | |
1428 | } | |
1429 | #else | |
1430 | /* Remove final slash, if any (unless path is root). | |
1431 | stat behaves differently depending! */ | |
1432 | if (XSTRING (abspath)->size > 1 | |
1433 | && XSTRING (abspath)->data[XSTRING (abspath)->size - 1] == '/') | |
1434 | { | |
1435 | if (EQ (abspath, filename)) | |
1436 | abspath = Fcopy_sequence (abspath); | |
1437 | XSTRING (abspath)->data[XSTRING (abspath)->size - 1] = 0; | |
1438 | } | |
1439 | #endif | |
1440 | return abspath; | |
1441 | } | |
1442 | \f | |
1443 | barf_or_query_if_file_exists (absname, querystring, interactive) | |
1444 | Lisp_Object absname; | |
1445 | unsigned char *querystring; | |
1446 | int interactive; | |
1447 | { | |
1448 | register Lisp_Object tem; | |
1449 | struct gcpro gcpro1; | |
1450 | ||
1451 | if (access (XSTRING (absname)->data, 4) >= 0) | |
1452 | { | |
1453 | if (! interactive) | |
1454 | Fsignal (Qfile_already_exists, | |
1455 | Fcons (build_string ("File already exists"), | |
1456 | Fcons (absname, Qnil))); | |
1457 | GCPRO1 (absname); | |
1458 | tem = do_yes_or_no_p (format1 ("File %s already exists; %s anyway? ", | |
1459 | XSTRING (absname)->data, querystring)); | |
1460 | UNGCPRO; | |
265a9e55 | 1461 | if (NILP (tem)) |
570d7624 JB |
1462 | Fsignal (Qfile_already_exists, |
1463 | Fcons (build_string ("File already exists"), | |
1464 | Fcons (absname, Qnil))); | |
1465 | } | |
1466 | return; | |
1467 | } | |
1468 | ||
1469 | DEFUN ("copy-file", Fcopy_file, Scopy_file, 2, 4, | |
349a7710 | 1470 | "fCopy file: \nFCopy %s to file: \np\nP", |
570d7624 JB |
1471 | "Copy FILE to NEWNAME. Both args must be strings.\n\ |
1472 | Signals a `file-already-exists' error if file NEWNAME already exists,\n\ | |
1473 | unless a third argument OK-IF-ALREADY-EXISTS is supplied and non-nil.\n\ | |
1474 | A number as third arg means request confirmation if NEWNAME already exists.\n\ | |
1475 | This is what happens in interactive use with M-x.\n\ | |
349a7710 JB |
1476 | Fourth arg KEEP-TIME non-nil means give the new file the same\n\ |
1477 | last-modified time as the old one. (This works on only some systems.)\n\ | |
1478 | A prefix arg makes KEEP-TIME non-nil.") | |
570d7624 JB |
1479 | (filename, newname, ok_if_already_exists, keep_date) |
1480 | Lisp_Object filename, newname, ok_if_already_exists, keep_date; | |
1481 | { | |
1482 | int ifd, ofd, n; | |
1483 | char buf[16 * 1024]; | |
1484 | struct stat st; | |
32f4334d | 1485 | Lisp_Object handler; |
570d7624 | 1486 | struct gcpro gcpro1, gcpro2; |
b5148e85 | 1487 | int count = specpdl_ptr - specpdl; |
570d7624 JB |
1488 | |
1489 | GCPRO2 (filename, newname); | |
1490 | CHECK_STRING (filename, 0); | |
1491 | CHECK_STRING (newname, 1); | |
1492 | filename = Fexpand_file_name (filename, Qnil); | |
1493 | newname = Fexpand_file_name (newname, Qnil); | |
32f4334d | 1494 | |
0bf2eed2 | 1495 | /* If the input file name has special constructs in it, |
32f4334d RS |
1496 | call the corresponding file handler. */ |
1497 | handler = find_file_handler (filename); | |
0bf2eed2 RS |
1498 | if (!NILP (handler)) |
1499 | return call3 (handler, Qcopy_file, filename, newname); | |
1500 | /* Likewise for output file name. */ | |
1501 | handler = find_file_handler (newname); | |
32f4334d RS |
1502 | if (!NILP (handler)) |
1503 | return call3 (handler, Qcopy_file, filename, newname); | |
1504 | ||
265a9e55 | 1505 | if (NILP (ok_if_already_exists) |
570d7624 JB |
1506 | || XTYPE (ok_if_already_exists) == Lisp_Int) |
1507 | barf_or_query_if_file_exists (newname, "copy to it", | |
1508 | XTYPE (ok_if_already_exists) == Lisp_Int); | |
1509 | ||
1510 | ifd = open (XSTRING (filename)->data, 0); | |
1511 | if (ifd < 0) | |
1512 | report_file_error ("Opening input file", Fcons (filename, Qnil)); | |
1513 | ||
b5148e85 RS |
1514 | record_unwind_protect (close_file_unwind, make_number (ifd)); |
1515 | ||
570d7624 JB |
1516 | #ifdef VMS |
1517 | /* Create the copy file with the same record format as the input file */ | |
1518 | ofd = sys_creat (XSTRING (newname)->data, 0666, ifd); | |
1519 | #else | |
1520 | ofd = creat (XSTRING (newname)->data, 0666); | |
1521 | #endif /* VMS */ | |
1522 | if (ofd < 0) | |
66331187 | 1523 | report_file_error ("Opening output file", Fcons (newname, Qnil)); |
b5148e85 RS |
1524 | |
1525 | record_unwind_protect (close_file_unwind, make_number (ofd)); | |
570d7624 | 1526 | |
b5148e85 RS |
1527 | immediate_quit = 1; |
1528 | QUIT; | |
570d7624 JB |
1529 | while ((n = read (ifd, buf, sizeof buf)) > 0) |
1530 | if (write (ofd, buf, n) != n) | |
66331187 | 1531 | report_file_error ("I/O error", Fcons (newname, Qnil)); |
b5148e85 | 1532 | immediate_quit = 0; |
570d7624 JB |
1533 | |
1534 | if (fstat (ifd, &st) >= 0) | |
1535 | { | |
265a9e55 | 1536 | if (!NILP (keep_date)) |
570d7624 | 1537 | { |
de5bf5d3 JB |
1538 | EMACS_TIME atime, mtime; |
1539 | EMACS_SET_SECS_USECS (atime, st.st_atime, 0); | |
1540 | EMACS_SET_SECS_USECS (mtime, st.st_mtime, 0); | |
1541 | EMACS_SET_UTIMES (XSTRING (newname)->data, atime, mtime); | |
570d7624 | 1542 | } |
570d7624 JB |
1543 | #ifdef APOLLO |
1544 | if (!egetenv ("USE_DOMAIN_ACLS")) | |
1545 | #endif | |
de5bf5d3 | 1546 | chmod (XSTRING (newname)->data, st.st_mode & 07777); |
570d7624 JB |
1547 | } |
1548 | ||
b5148e85 RS |
1549 | /* Discard the unwind protects. */ |
1550 | specpdl_ptr = specpdl + count; | |
1551 | ||
570d7624 JB |
1552 | close (ifd); |
1553 | if (close (ofd) < 0) | |
1554 | report_file_error ("I/O error", Fcons (newname, Qnil)); | |
1555 | ||
1556 | UNGCPRO; | |
1557 | return Qnil; | |
1558 | } | |
1559 | ||
1560 | DEFUN ("make-directory", Fmake_directory, Smake_directory, 1, 1, "FMake directory: ", | |
1561 | "Create a directory. One argument, a file name string.") | |
1562 | (dirname) | |
1563 | Lisp_Object dirname; | |
1564 | { | |
1565 | unsigned char *dir; | |
32f4334d | 1566 | Lisp_Object handler; |
570d7624 JB |
1567 | |
1568 | CHECK_STRING (dirname, 0); | |
1569 | dirname = Fexpand_file_name (dirname, Qnil); | |
32f4334d RS |
1570 | |
1571 | handler = find_file_handler (dirname); | |
1572 | if (!NILP (handler)) | |
1573 | return call2 (handler, Qmake_directory, dirname); | |
1574 | ||
570d7624 JB |
1575 | dir = XSTRING (dirname)->data; |
1576 | ||
1577 | if (mkdir (dir, 0777) != 0) | |
1578 | report_file_error ("Creating directory", Flist (1, &dirname)); | |
1579 | ||
32f4334d | 1580 | return Qnil; |
570d7624 JB |
1581 | } |
1582 | ||
aa734e17 RS |
1583 | DEFUN ("delete-directory", Fdelete_directory, Sdelete_directory, 1, 1, "FDelete directory: ", |
1584 | "Delete a directory. One argument, a file name string.") | |
570d7624 JB |
1585 | (dirname) |
1586 | Lisp_Object dirname; | |
1587 | { | |
1588 | unsigned char *dir; | |
32f4334d | 1589 | Lisp_Object handler; |
570d7624 JB |
1590 | |
1591 | CHECK_STRING (dirname, 0); | |
1592 | dirname = Fexpand_file_name (dirname, Qnil); | |
1593 | dir = XSTRING (dirname)->data; | |
1594 | ||
32f4334d RS |
1595 | handler = find_file_handler (dirname); |
1596 | if (!NILP (handler)) | |
1597 | return call2 (handler, Qdelete_directory, dirname); | |
1598 | ||
570d7624 JB |
1599 | if (rmdir (dir) != 0) |
1600 | report_file_error ("Removing directory", Flist (1, &dirname)); | |
1601 | ||
1602 | return Qnil; | |
1603 | } | |
1604 | ||
1605 | DEFUN ("delete-file", Fdelete_file, Sdelete_file, 1, 1, "fDelete file: ", | |
1606 | "Delete specified file. One argument, a file name string.\n\ | |
1607 | If file has multiple names, it continues to exist with the other names.") | |
1608 | (filename) | |
1609 | Lisp_Object filename; | |
1610 | { | |
32f4334d | 1611 | Lisp_Object handler; |
570d7624 JB |
1612 | CHECK_STRING (filename, 0); |
1613 | filename = Fexpand_file_name (filename, Qnil); | |
32f4334d RS |
1614 | |
1615 | handler = find_file_handler (filename); | |
1616 | if (!NILP (handler)) | |
1617 | return call2 (handler, Qdelete_file, filename); | |
1618 | ||
570d7624 JB |
1619 | if (0 > unlink (XSTRING (filename)->data)) |
1620 | report_file_error ("Removing old name", Flist (1, &filename)); | |
1621 | return Qnil; | |
1622 | } | |
1623 | ||
1624 | DEFUN ("rename-file", Frename_file, Srename_file, 2, 3, | |
1625 | "fRename file: \nFRename %s to file: \np", | |
1626 | "Rename FILE as NEWNAME. Both args strings.\n\ | |
1627 | If file has names other than FILE, it continues to have those names.\n\ | |
1628 | Signals a `file-already-exists' error if a file NEWNAME already exists\n\ | |
1629 | unless optional third argument OK-IF-ALREADY-EXISTS is non-nil.\n\ | |
1630 | A number as third arg means request confirmation if NEWNAME already exists.\n\ | |
1631 | This is what happens in interactive use with M-x.") | |
1632 | (filename, newname, ok_if_already_exists) | |
1633 | Lisp_Object filename, newname, ok_if_already_exists; | |
1634 | { | |
1635 | #ifdef NO_ARG_ARRAY | |
1636 | Lisp_Object args[2]; | |
1637 | #endif | |
32f4334d | 1638 | Lisp_Object handler; |
570d7624 JB |
1639 | struct gcpro gcpro1, gcpro2; |
1640 | ||
1641 | GCPRO2 (filename, newname); | |
1642 | CHECK_STRING (filename, 0); | |
1643 | CHECK_STRING (newname, 1); | |
1644 | filename = Fexpand_file_name (filename, Qnil); | |
1645 | newname = Fexpand_file_name (newname, Qnil); | |
32f4334d RS |
1646 | |
1647 | /* If the file name has special constructs in it, | |
1648 | call the corresponding file handler. */ | |
1649 | handler = find_file_handler (filename); | |
1650 | if (!NILP (handler)) | |
1651 | return call3 (handler, Qrename_file, filename, newname); | |
1652 | ||
265a9e55 | 1653 | if (NILP (ok_if_already_exists) |
570d7624 JB |
1654 | || XTYPE (ok_if_already_exists) == Lisp_Int) |
1655 | barf_or_query_if_file_exists (newname, "rename to it", | |
1656 | XTYPE (ok_if_already_exists) == Lisp_Int); | |
1657 | #ifndef BSD4_1 | |
1658 | if (0 > rename (XSTRING (filename)->data, XSTRING (newname)->data)) | |
1659 | #else | |
1660 | if (0 > link (XSTRING (filename)->data, XSTRING (newname)->data) | |
1661 | || 0 > unlink (XSTRING (filename)->data)) | |
1662 | #endif | |
1663 | { | |
1664 | if (errno == EXDEV) | |
1665 | { | |
1666 | Fcopy_file (filename, newname, ok_if_already_exists, Qt); | |
1667 | Fdelete_file (filename); | |
1668 | } | |
1669 | else | |
1670 | #ifdef NO_ARG_ARRAY | |
1671 | { | |
1672 | args[0] = filename; | |
1673 | args[1] = newname; | |
1674 | report_file_error ("Renaming", Flist (2, args)); | |
1675 | } | |
1676 | #else | |
1677 | report_file_error ("Renaming", Flist (2, &filename)); | |
1678 | #endif | |
1679 | } | |
1680 | UNGCPRO; | |
1681 | return Qnil; | |
1682 | } | |
1683 | ||
1684 | DEFUN ("add-name-to-file", Fadd_name_to_file, Sadd_name_to_file, 2, 3, | |
1685 | "fAdd name to file: \nFName to add to %s: \np", | |
1686 | "Give FILE additional name NEWNAME. Both args strings.\n\ | |
1687 | Signals a `file-already-exists' error if a file NEWNAME already exists\n\ | |
1688 | unless optional third argument OK-IF-ALREADY-EXISTS is non-nil.\n\ | |
1689 | A number as third arg means request confirmation if NEWNAME already exists.\n\ | |
1690 | This is what happens in interactive use with M-x.") | |
1691 | (filename, newname, ok_if_already_exists) | |
1692 | Lisp_Object filename, newname, ok_if_already_exists; | |
1693 | { | |
1694 | #ifdef NO_ARG_ARRAY | |
1695 | Lisp_Object args[2]; | |
1696 | #endif | |
32f4334d | 1697 | Lisp_Object handler; |
570d7624 JB |
1698 | struct gcpro gcpro1, gcpro2; |
1699 | ||
1700 | GCPRO2 (filename, newname); | |
1701 | CHECK_STRING (filename, 0); | |
1702 | CHECK_STRING (newname, 1); | |
1703 | filename = Fexpand_file_name (filename, Qnil); | |
1704 | newname = Fexpand_file_name (newname, Qnil); | |
32f4334d RS |
1705 | |
1706 | /* If the file name has special constructs in it, | |
1707 | call the corresponding file handler. */ | |
1708 | handler = find_file_handler (filename); | |
1709 | if (!NILP (handler)) | |
1710 | return call3 (handler, Qadd_name_to_file, filename, newname); | |
1711 | ||
265a9e55 | 1712 | if (NILP (ok_if_already_exists) |
570d7624 JB |
1713 | || XTYPE (ok_if_already_exists) == Lisp_Int) |
1714 | barf_or_query_if_file_exists (newname, "make it a new name", | |
1715 | XTYPE (ok_if_already_exists) == Lisp_Int); | |
1716 | unlink (XSTRING (newname)->data); | |
1717 | if (0 > link (XSTRING (filename)->data, XSTRING (newname)->data)) | |
1718 | { | |
1719 | #ifdef NO_ARG_ARRAY | |
1720 | args[0] = filename; | |
1721 | args[1] = newname; | |
1722 | report_file_error ("Adding new name", Flist (2, args)); | |
1723 | #else | |
1724 | report_file_error ("Adding new name", Flist (2, &filename)); | |
1725 | #endif | |
1726 | } | |
1727 | ||
1728 | UNGCPRO; | |
1729 | return Qnil; | |
1730 | } | |
1731 | ||
1732 | #ifdef S_IFLNK | |
1733 | DEFUN ("make-symbolic-link", Fmake_symbolic_link, Smake_symbolic_link, 2, 3, | |
1734 | "FMake symbolic link to file: \nFMake symbolic link to file %s: \np", | |
1735 | "Make a symbolic link to FILENAME, named LINKNAME. Both args strings.\n\ | |
1736 | Signals a `file-already-exists' error if a file NEWNAME already exists\n\ | |
1737 | unless optional third argument OK-IF-ALREADY-EXISTS is non-nil.\n\ | |
1738 | A number as third arg means request confirmation if NEWNAME already exists.\n\ | |
1739 | This happens for interactive use with M-x.") | |
e5d77022 JB |
1740 | (filename, linkname, ok_if_already_exists) |
1741 | Lisp_Object filename, linkname, ok_if_already_exists; | |
570d7624 JB |
1742 | { |
1743 | #ifdef NO_ARG_ARRAY | |
1744 | Lisp_Object args[2]; | |
1745 | #endif | |
32f4334d | 1746 | Lisp_Object handler; |
570d7624 JB |
1747 | struct gcpro gcpro1, gcpro2; |
1748 | ||
e5d77022 | 1749 | GCPRO2 (filename, linkname); |
570d7624 | 1750 | CHECK_STRING (filename, 0); |
e5d77022 | 1751 | CHECK_STRING (linkname, 1); |
570d7624 JB |
1752 | #if 0 /* This made it impossible to make a link to a relative name. */ |
1753 | filename = Fexpand_file_name (filename, Qnil); | |
1754 | #endif | |
e5d77022 | 1755 | linkname = Fexpand_file_name (linkname, Qnil); |
32f4334d RS |
1756 | |
1757 | /* If the file name has special constructs in it, | |
1758 | call the corresponding file handler. */ | |
1759 | handler = find_file_handler (filename); | |
1760 | if (!NILP (handler)) | |
3eac9910 | 1761 | return call3 (handler, Qmake_symbolic_link, filename, linkname); |
32f4334d | 1762 | |
265a9e55 | 1763 | if (NILP (ok_if_already_exists) |
570d7624 | 1764 | || XTYPE (ok_if_already_exists) == Lisp_Int) |
e5d77022 | 1765 | barf_or_query_if_file_exists (linkname, "make it a link", |
570d7624 | 1766 | XTYPE (ok_if_already_exists) == Lisp_Int); |
e5d77022 | 1767 | if (0 > symlink (XSTRING (filename)->data, XSTRING (linkname)->data)) |
570d7624 JB |
1768 | { |
1769 | /* If we didn't complain already, silently delete existing file. */ | |
1770 | if (errno == EEXIST) | |
1771 | { | |
1772 | unlink (XSTRING (filename)->data); | |
e5d77022 | 1773 | if (0 <= symlink (XSTRING (filename)->data, XSTRING (linkname)->data)) |
570d7624 JB |
1774 | return Qnil; |
1775 | } | |
1776 | ||
1777 | #ifdef NO_ARG_ARRAY | |
1778 | args[0] = filename; | |
e5d77022 | 1779 | args[1] = linkname; |
570d7624 JB |
1780 | report_file_error ("Making symbolic link", Flist (2, args)); |
1781 | #else | |
1782 | report_file_error ("Making symbolic link", Flist (2, &filename)); | |
1783 | #endif | |
1784 | } | |
1785 | UNGCPRO; | |
1786 | return Qnil; | |
1787 | } | |
1788 | #endif /* S_IFLNK */ | |
1789 | ||
1790 | #ifdef VMS | |
1791 | ||
1792 | DEFUN ("define-logical-name", Fdefine_logical_name, Sdefine_logical_name, | |
1793 | 2, 2, "sDefine logical name: \nsDefine logical name %s as: ", | |
1794 | "Define the job-wide logical name NAME to have the value STRING.\n\ | |
1795 | If STRING is nil or a null string, the logical name NAME is deleted.") | |
1796 | (varname, string) | |
1797 | Lisp_Object varname; | |
1798 | Lisp_Object string; | |
1799 | { | |
1800 | CHECK_STRING (varname, 0); | |
265a9e55 | 1801 | if (NILP (string)) |
570d7624 JB |
1802 | delete_logical_name (XSTRING (varname)->data); |
1803 | else | |
1804 | { | |
1805 | CHECK_STRING (string, 1); | |
1806 | ||
1807 | if (XSTRING (string)->size == 0) | |
1808 | delete_logical_name (XSTRING (varname)->data); | |
1809 | else | |
1810 | define_logical_name (XSTRING (varname)->data, XSTRING (string)->data); | |
1811 | } | |
1812 | ||
1813 | return string; | |
1814 | } | |
1815 | #endif /* VMS */ | |
1816 | ||
1817 | #ifdef HPUX_NET | |
1818 | ||
1819 | DEFUN ("sysnetunam", Fsysnetunam, Ssysnetunam, 2, 2, 0, | |
1820 | "Open a network connection to PATH using LOGIN as the login string.") | |
1821 | (path, login) | |
1822 | Lisp_Object path, login; | |
1823 | { | |
1824 | int netresult; | |
1825 | ||
1826 | CHECK_STRING (path, 0); | |
1827 | CHECK_STRING (login, 0); | |
1828 | ||
1829 | netresult = netunam (XSTRING (path)->data, XSTRING (login)->data); | |
1830 | ||
1831 | if (netresult == -1) | |
1832 | return Qnil; | |
1833 | else | |
1834 | return Qt; | |
1835 | } | |
1836 | #endif /* HPUX_NET */ | |
1837 | \f | |
1838 | DEFUN ("file-name-absolute-p", Ffile_name_absolute_p, Sfile_name_absolute_p, | |
1839 | 1, 1, 0, | |
1840 | "Return t if file FILENAME specifies an absolute path name.\n\ | |
1841 | On Unix, this is a name starting with a `/' or a `~'.") | |
1842 | (filename) | |
1843 | Lisp_Object filename; | |
1844 | { | |
1845 | unsigned char *ptr; | |
1846 | ||
1847 | CHECK_STRING (filename, 0); | |
1848 | ptr = XSTRING (filename)->data; | |
1849 | if (*ptr == '/' || *ptr == '~' | |
1850 | #ifdef VMS | |
1851 | /* ??? This criterion is probably wrong for '<'. */ | |
1852 | || index (ptr, ':') || index (ptr, '<') | |
1853 | || (*ptr == '[' && (ptr[1] != '-' || (ptr[2] != '.' && ptr[2] != ']')) | |
1854 | && ptr[1] != '.') | |
1855 | #endif /* VMS */ | |
1856 | ) | |
1857 | return Qt; | |
1858 | else | |
1859 | return Qnil; | |
1860 | } | |
1861 | ||
1862 | DEFUN ("file-exists-p", Ffile_exists_p, Sfile_exists_p, 1, 1, 0, | |
1863 | "Return t if file FILENAME exists. (This does not mean you can read it.)\n\ | |
1864 | See also `file-readable-p' and `file-attributes'.") | |
1865 | (filename) | |
1866 | Lisp_Object filename; | |
1867 | { | |
1868 | Lisp_Object abspath; | |
32f4334d | 1869 | Lisp_Object handler; |
570d7624 JB |
1870 | |
1871 | CHECK_STRING (filename, 0); | |
1872 | abspath = Fexpand_file_name (filename, Qnil); | |
32f4334d RS |
1873 | |
1874 | /* If the file name has special constructs in it, | |
1875 | call the corresponding file handler. */ | |
09121adc | 1876 | handler = find_file_handler (abspath); |
32f4334d | 1877 | if (!NILP (handler)) |
09121adc | 1878 | return call2 (handler, Qfile_exists_p, abspath); |
32f4334d | 1879 | |
570d7624 JB |
1880 | return (access (XSTRING (abspath)->data, 0) >= 0) ? Qt : Qnil; |
1881 | } | |
1882 | ||
1883 | DEFUN ("file-executable-p", Ffile_executable_p, Sfile_executable_p, 1, 1, 0, | |
1884 | "Return t if FILENAME can be executed by you.\n\ | |
1885 | For directories this means you can change to that directory.") | |
1886 | (filename) | |
1887 | Lisp_Object filename; | |
1888 | ||
1889 | { | |
1890 | Lisp_Object abspath; | |
32f4334d | 1891 | Lisp_Object handler; |
570d7624 JB |
1892 | |
1893 | CHECK_STRING (filename, 0); | |
1894 | abspath = Fexpand_file_name (filename, Qnil); | |
32f4334d RS |
1895 | |
1896 | /* If the file name has special constructs in it, | |
1897 | call the corresponding file handler. */ | |
09121adc | 1898 | handler = find_file_handler (abspath); |
32f4334d | 1899 | if (!NILP (handler)) |
09121adc | 1900 | return call2 (handler, Qfile_executable_p, abspath); |
32f4334d | 1901 | |
570d7624 JB |
1902 | return (access (XSTRING (abspath)->data, 1) >= 0) ? Qt : Qnil; |
1903 | } | |
1904 | ||
1905 | DEFUN ("file-readable-p", Ffile_readable_p, Sfile_readable_p, 1, 1, 0, | |
1906 | "Return t if file FILENAME exists and you can read it.\n\ | |
1907 | See also `file-exists-p' and `file-attributes'.") | |
1908 | (filename) | |
1909 | Lisp_Object filename; | |
1910 | { | |
1911 | Lisp_Object abspath; | |
32f4334d | 1912 | Lisp_Object handler; |
570d7624 JB |
1913 | |
1914 | CHECK_STRING (filename, 0); | |
1915 | abspath = Fexpand_file_name (filename, Qnil); | |
32f4334d RS |
1916 | |
1917 | /* If the file name has special constructs in it, | |
1918 | call the corresponding file handler. */ | |
09121adc | 1919 | handler = find_file_handler (abspath); |
32f4334d | 1920 | if (!NILP (handler)) |
09121adc | 1921 | return call2 (handler, Qfile_readable_p, abspath); |
32f4334d | 1922 | |
570d7624 JB |
1923 | return (access (XSTRING (abspath)->data, 4) >= 0) ? Qt : Qnil; |
1924 | } | |
1925 | ||
1926 | DEFUN ("file-symlink-p", Ffile_symlink_p, Sfile_symlink_p, 1, 1, 0, | |
1927 | "If file FILENAME is the name of a symbolic link\n\ | |
1928 | returns the name of the file to which it is linked.\n\ | |
1929 | Otherwise returns NIL.") | |
1930 | (filename) | |
1931 | Lisp_Object filename; | |
1932 | { | |
1933 | #ifdef S_IFLNK | |
1934 | char *buf; | |
1935 | int bufsize; | |
1936 | int valsize; | |
1937 | Lisp_Object val; | |
32f4334d | 1938 | Lisp_Object handler; |
570d7624 JB |
1939 | |
1940 | CHECK_STRING (filename, 0); | |
1941 | filename = Fexpand_file_name (filename, Qnil); | |
1942 | ||
32f4334d RS |
1943 | /* If the file name has special constructs in it, |
1944 | call the corresponding file handler. */ | |
1945 | handler = find_file_handler (filename); | |
1946 | if (!NILP (handler)) | |
1947 | return call2 (handler, Qfile_symlink_p, filename); | |
1948 | ||
570d7624 JB |
1949 | bufsize = 100; |
1950 | while (1) | |
1951 | { | |
1952 | buf = (char *) xmalloc (bufsize); | |
1953 | bzero (buf, bufsize); | |
1954 | valsize = readlink (XSTRING (filename)->data, buf, bufsize); | |
1955 | if (valsize < bufsize) break; | |
1956 | /* Buffer was not long enough */ | |
1957 | free (buf); | |
1958 | bufsize *= 2; | |
1959 | } | |
1960 | if (valsize == -1) | |
1961 | { | |
1962 | free (buf); | |
1963 | return Qnil; | |
1964 | } | |
1965 | val = make_string (buf, valsize); | |
1966 | free (buf); | |
1967 | return val; | |
1968 | #else /* not S_IFLNK */ | |
1969 | return Qnil; | |
1970 | #endif /* not S_IFLNK */ | |
1971 | } | |
1972 | ||
1973 | /* Having this before file-symlink-p mysteriously caused it to be forgotten | |
1974 | on the RT/PC. */ | |
1975 | DEFUN ("file-writable-p", Ffile_writable_p, Sfile_writable_p, 1, 1, 0, | |
1976 | "Return t if file FILENAME can be written or created by you.") | |
1977 | (filename) | |
1978 | Lisp_Object filename; | |
1979 | { | |
1980 | Lisp_Object abspath, dir; | |
32f4334d | 1981 | Lisp_Object handler; |
570d7624 JB |
1982 | |
1983 | CHECK_STRING (filename, 0); | |
1984 | abspath = Fexpand_file_name (filename, Qnil); | |
32f4334d RS |
1985 | |
1986 | /* If the file name has special constructs in it, | |
1987 | call the corresponding file handler. */ | |
09121adc | 1988 | handler = find_file_handler (abspath); |
32f4334d | 1989 | if (!NILP (handler)) |
09121adc | 1990 | return call2 (handler, Qfile_writable_p, abspath); |
32f4334d | 1991 | |
570d7624 JB |
1992 | if (access (XSTRING (abspath)->data, 0) >= 0) |
1993 | return (access (XSTRING (abspath)->data, 2) >= 0) ? Qt : Qnil; | |
1994 | dir = Ffile_name_directory (abspath); | |
1995 | #ifdef VMS | |
265a9e55 | 1996 | if (!NILP (dir)) |
570d7624 JB |
1997 | dir = Fdirectory_file_name (dir); |
1998 | #endif /* VMS */ | |
265a9e55 | 1999 | return (access (!NILP (dir) ? (char *) XSTRING (dir)->data : "", 2) >= 0 |
570d7624 JB |
2000 | ? Qt : Qnil); |
2001 | } | |
2002 | ||
2003 | DEFUN ("file-directory-p", Ffile_directory_p, Sfile_directory_p, 1, 1, 0, | |
2004 | "Return t if file FILENAME is the name of a directory as a file.\n\ | |
2005 | A directory name spec may be given instead; then the value is t\n\ | |
2006 | if the directory so specified exists and really is a directory.") | |
2007 | (filename) | |
2008 | Lisp_Object filename; | |
2009 | { | |
2010 | register Lisp_Object abspath; | |
2011 | struct stat st; | |
32f4334d | 2012 | Lisp_Object handler; |
570d7624 JB |
2013 | |
2014 | abspath = expand_and_dir_to_file (filename, current_buffer->directory); | |
2015 | ||
32f4334d RS |
2016 | /* If the file name has special constructs in it, |
2017 | call the corresponding file handler. */ | |
09121adc | 2018 | handler = find_file_handler (abspath); |
32f4334d | 2019 | if (!NILP (handler)) |
09121adc | 2020 | return call2 (handler, Qfile_directory_p, abspath); |
32f4334d | 2021 | |
570d7624 JB |
2022 | if (stat (XSTRING (abspath)->data, &st) < 0) |
2023 | return Qnil; | |
2024 | return (st.st_mode & S_IFMT) == S_IFDIR ? Qt : Qnil; | |
2025 | } | |
2026 | ||
b72dea2a JB |
2027 | DEFUN ("file-accessible-directory-p", Ffile_accessible_directory_p, Sfile_accessible_directory_p, 1, 1, 0, |
2028 | "Return t if file FILENAME is the name of a directory as a file,\n\ | |
2029 | and files in that directory can be opened by you. In order to use a\n\ | |
2030 | directory as a buffer's current directory, this predicate must return true.\n\ | |
2031 | A directory name spec may be given instead; then the value is t\n\ | |
2032 | if the directory so specified exists and really is a readable and\n\ | |
2033 | searchable directory.") | |
2034 | (filename) | |
2035 | Lisp_Object filename; | |
2036 | { | |
32f4334d RS |
2037 | Lisp_Object handler; |
2038 | ||
2039 | /* If the file name has special constructs in it, | |
2040 | call the corresponding file handler. */ | |
2041 | handler = find_file_handler (filename); | |
2042 | if (!NILP (handler)) | |
2043 | return call2 (handler, Qfile_accessible_directory_p, filename); | |
2044 | ||
b72dea2a JB |
2045 | if (NILP (Ffile_directory_p (filename)) |
2046 | || NILP (Ffile_executable_p (filename))) | |
2047 | return Qnil; | |
2048 | else | |
2049 | return Qt; | |
2050 | } | |
2051 | ||
570d7624 JB |
2052 | DEFUN ("file-modes", Ffile_modes, Sfile_modes, 1, 1, 0, |
2053 | "Return mode bits of FILE, as an integer.") | |
2054 | (filename) | |
2055 | Lisp_Object filename; | |
2056 | { | |
2057 | Lisp_Object abspath; | |
2058 | struct stat st; | |
32f4334d | 2059 | Lisp_Object handler; |
570d7624 JB |
2060 | |
2061 | abspath = expand_and_dir_to_file (filename, current_buffer->directory); | |
2062 | ||
32f4334d RS |
2063 | /* If the file name has special constructs in it, |
2064 | call the corresponding file handler. */ | |
09121adc | 2065 | handler = find_file_handler (abspath); |
32f4334d | 2066 | if (!NILP (handler)) |
09121adc | 2067 | return call2 (handler, Qfile_modes, abspath); |
32f4334d | 2068 | |
570d7624 JB |
2069 | if (stat (XSTRING (abspath)->data, &st) < 0) |
2070 | return Qnil; | |
2071 | return make_number (st.st_mode & 07777); | |
2072 | } | |
2073 | ||
2074 | DEFUN ("set-file-modes", Fset_file_modes, Sset_file_modes, 2, 2, 0, | |
2075 | "Set mode bits of FILE to MODE (an integer).\n\ | |
2076 | Only the 12 low bits of MODE are used.") | |
2077 | (filename, mode) | |
2078 | Lisp_Object filename, mode; | |
2079 | { | |
2080 | Lisp_Object abspath; | |
32f4334d | 2081 | Lisp_Object handler; |
570d7624 JB |
2082 | |
2083 | abspath = Fexpand_file_name (filename, current_buffer->directory); | |
2084 | CHECK_NUMBER (mode, 1); | |
2085 | ||
32f4334d RS |
2086 | /* If the file name has special constructs in it, |
2087 | call the corresponding file handler. */ | |
09121adc | 2088 | handler = find_file_handler (abspath); |
32f4334d | 2089 | if (!NILP (handler)) |
09121adc | 2090 | return call3 (handler, Qset_file_modes, abspath, mode); |
32f4334d | 2091 | |
570d7624 JB |
2092 | #ifndef APOLLO |
2093 | if (chmod (XSTRING (abspath)->data, XINT (mode)) < 0) | |
2094 | report_file_error ("Doing chmod", Fcons (abspath, Qnil)); | |
2095 | #else /* APOLLO */ | |
2096 | if (!egetenv ("USE_DOMAIN_ACLS")) | |
2097 | { | |
2098 | struct stat st; | |
2099 | struct timeval tvp[2]; | |
2100 | ||
2101 | /* chmod on apollo also change the file's modtime; need to save the | |
2102 | modtime and then restore it. */ | |
2103 | if (stat (XSTRING (abspath)->data, &st) < 0) | |
2104 | { | |
2105 | report_file_error ("Doing chmod", Fcons (abspath, Qnil)); | |
2106 | return (Qnil); | |
2107 | } | |
2108 | ||
2109 | if (chmod (XSTRING (abspath)->data, XINT (mode)) < 0) | |
2110 | report_file_error ("Doing chmod", Fcons (abspath, Qnil)); | |
2111 | ||
2112 | /* reset the old accessed and modified times. */ | |
2113 | tvp[0].tv_sec = st.st_atime + 1; /* +1 due to an Apollo roundoff bug */ | |
2114 | tvp[0].tv_usec = 0; | |
2115 | tvp[1].tv_sec = st.st_mtime + 1; /* +1 due to an Apollo roundoff bug */ | |
2116 | tvp[1].tv_usec = 0; | |
2117 | ||
2118 | if (utimes (XSTRING (abspath)->data, tvp) < 0) | |
2119 | report_file_error ("Doing utimes", Fcons (abspath, Qnil)); | |
2120 | } | |
2121 | #endif /* APOLLO */ | |
2122 | ||
2123 | return Qnil; | |
2124 | } | |
2125 | ||
36a8c287 JB |
2126 | DEFUN ("set-umask", Fset_umask, Sset_umask, 1, 1, 0, |
2127 | "Select which permission bits to disable in newly created files.\n\ | |
2128 | MASK should be an integer; if a permission's bit in MASK is 1,\n\ | |
2129 | subsequently created files will not have that permission enabled.\n\ | |
2130 | Only the low 9 bits are used.\n\ | |
2131 | This setting is inherited by subprocesses.") | |
2132 | (mask) | |
2133 | Lisp_Object mask; | |
2134 | { | |
2135 | CHECK_NUMBER (mask, 0); | |
2136 | ||
2137 | umask (XINT (mask) & 0777); | |
2138 | ||
2139 | return Qnil; | |
2140 | } | |
2141 | ||
2142 | DEFUN ("umask", Fumask, Sumask, 0, 0, 0, | |
2143 | "Return the current umask value.\n\ | |
2144 | The umask value determines which permissions are enabled in newly\n\ | |
2145 | created files. If a permission's bit in the umask is 1, subsequently\n\ | |
2146 | created files will not have that permission enabled.") | |
2147 | () | |
2148 | { | |
2149 | Lisp_Object mask; | |
2150 | ||
2151 | XSET (mask, Lisp_Int, umask (0)); | |
2152 | umask (XINT (mask)); | |
2153 | ||
2154 | return mask; | |
2155 | } | |
2156 | ||
85ffea93 RS |
2157 | #ifdef unix |
2158 | ||
2159 | DEFUN ("unix-sync", Funix_sync, Sunix_sync, 0, 0, "", | |
2160 | "Tell Unix to finish all pending disk updates.") | |
2161 | () | |
2162 | { | |
2163 | sync (); | |
2164 | return Qnil; | |
2165 | } | |
2166 | ||
2167 | #endif /* unix */ | |
2168 | ||
570d7624 JB |
2169 | DEFUN ("file-newer-than-file-p", Ffile_newer_than_file_p, Sfile_newer_than_file_p, 2, 2, 0, |
2170 | "Return t if file FILE1 is newer than file FILE2.\n\ | |
2171 | If FILE1 does not exist, the answer is nil;\n\ | |
2172 | otherwise, if FILE2 does not exist, the answer is t.") | |
2173 | (file1, file2) | |
2174 | Lisp_Object file1, file2; | |
2175 | { | |
32f4334d | 2176 | Lisp_Object abspath1, abspath2; |
570d7624 JB |
2177 | struct stat st; |
2178 | int mtime1; | |
32f4334d | 2179 | Lisp_Object handler; |
09121adc | 2180 | struct gcpro gcpro1, gcpro2; |
570d7624 JB |
2181 | |
2182 | CHECK_STRING (file1, 0); | |
2183 | CHECK_STRING (file2, 0); | |
2184 | ||
09121adc RS |
2185 | abspath1 = Qnil; |
2186 | GCPRO2 (abspath1, file2); | |
32f4334d RS |
2187 | abspath1 = expand_and_dir_to_file (file1, current_buffer->directory); |
2188 | abspath2 = expand_and_dir_to_file (file2, current_buffer->directory); | |
09121adc | 2189 | UNGCPRO; |
570d7624 | 2190 | |
32f4334d RS |
2191 | /* If the file name has special constructs in it, |
2192 | call the corresponding file handler. */ | |
2193 | handler = find_file_handler (abspath1); | |
2194 | if (!NILP (handler)) | |
2195 | return call3 (handler, Qfile_newer_than_file_p, abspath1, abspath2); | |
2196 | ||
2197 | if (stat (XSTRING (abspath1)->data, &st) < 0) | |
570d7624 JB |
2198 | return Qnil; |
2199 | ||
2200 | mtime1 = st.st_mtime; | |
2201 | ||
32f4334d | 2202 | if (stat (XSTRING (abspath2)->data, &st) < 0) |
570d7624 JB |
2203 | return Qt; |
2204 | ||
2205 | return (mtime1 > st.st_mtime) ? Qt : Qnil; | |
2206 | } | |
2207 | \f | |
570d7624 JB |
2208 | DEFUN ("insert-file-contents", Finsert_file_contents, Sinsert_file_contents, |
2209 | 1, 2, 0, | |
2210 | "Insert contents of file FILENAME after point.\n\ | |
2211 | Returns list of absolute pathname and length of data inserted.\n\ | |
2212 | If second argument VISIT is non-nil, the buffer's visited filename\n\ | |
2213 | and last save file modtime are set, and it is marked unmodified.\n\ | |
2214 | If visiting and the file does not exist, visiting is completed\n\ | |
2215 | before the error is signaled.") | |
2216 | (filename, visit) | |
2217 | Lisp_Object filename, visit; | |
2218 | { | |
2219 | struct stat st; | |
2220 | register int fd; | |
2221 | register int inserted = 0; | |
2222 | register int how_much; | |
2223 | int count = specpdl_ptr - specpdl; | |
2224 | struct gcpro gcpro1; | |
32f4334d RS |
2225 | Lisp_Object handler, val; |
2226 | ||
2227 | val = Qnil; | |
2228 | ||
570d7624 | 2229 | GCPRO1 (filename); |
265a9e55 | 2230 | if (!NILP (current_buffer->read_only)) |
570d7624 JB |
2231 | Fbarf_if_buffer_read_only(); |
2232 | ||
2233 | CHECK_STRING (filename, 0); | |
2234 | filename = Fexpand_file_name (filename, Qnil); | |
2235 | ||
32f4334d RS |
2236 | /* If the file name has special constructs in it, |
2237 | call the corresponding file handler. */ | |
2238 | handler = find_file_handler (filename); | |
2239 | if (!NILP (handler)) | |
2240 | { | |
2241 | val = call3 (handler, Qinsert_file_contents, filename, visit); | |
2242 | st.st_mtime = 0; | |
2243 | goto handled; | |
2244 | } | |
2245 | ||
570d7624 JB |
2246 | fd = -1; |
2247 | ||
2248 | #ifndef APOLLO | |
2249 | if (stat (XSTRING (filename)->data, &st) < 0 | |
349a7710 | 2250 | || (fd = open (XSTRING (filename)->data, 0)) < 0) |
570d7624 JB |
2251 | #else |
2252 | if ((fd = open (XSTRING (filename)->data, 0)) < 0 | |
2253 | || fstat (fd, &st) < 0) | |
2254 | #endif /* not APOLLO */ | |
2255 | { | |
2256 | if (fd >= 0) close (fd); | |
265a9e55 | 2257 | if (NILP (visit)) |
570d7624 JB |
2258 | report_file_error ("Opening input file", Fcons (filename, Qnil)); |
2259 | st.st_mtime = -1; | |
2260 | how_much = 0; | |
2261 | goto notfound; | |
2262 | } | |
2263 | ||
2264 | record_unwind_protect (close_file_unwind, make_number (fd)); | |
2265 | ||
be53b411 JB |
2266 | #ifdef S_IFSOCK |
2267 | /* This code will need to be changed in order to work on named | |
2268 | pipes, and it's probably just not worth it. So we should at | |
2269 | least signal an error. */ | |
2270 | if ((st.st_mode & S_IFMT) == S_IFSOCK) | |
2271 | Fsignal (Qfile_error, | |
2272 | Fcons (build_string ("reading from named pipe"), | |
2273 | Fcons (filename, Qnil))); | |
2274 | #endif | |
2275 | ||
570d7624 JB |
2276 | /* Supposedly happens on VMS. */ |
2277 | if (st.st_size < 0) | |
2278 | error ("File size is negative"); | |
be53b411 | 2279 | |
570d7624 JB |
2280 | { |
2281 | register Lisp_Object temp; | |
2282 | ||
2283 | /* Make sure point-max won't overflow after this insertion. */ | |
2284 | XSET (temp, Lisp_Int, st.st_size + Z); | |
2285 | if (st.st_size + Z != XINT (temp)) | |
2286 | error ("maximum buffer size exceeded"); | |
2287 | } | |
2288 | ||
265a9e55 | 2289 | if (NILP (visit)) |
570d7624 JB |
2290 | prepare_to_modify_buffer (point, point); |
2291 | ||
2292 | move_gap (point); | |
2293 | if (GAP_SIZE < st.st_size) | |
2294 | make_gap (st.st_size - GAP_SIZE); | |
2295 | ||
2296 | while (1) | |
2297 | { | |
2298 | int try = min (st.st_size - inserted, 64 << 10); | |
b5148e85 RS |
2299 | int this; |
2300 | ||
2301 | /* Allow quitting out of the actual I/O. */ | |
2302 | immediate_quit = 1; | |
2303 | QUIT; | |
2304 | this = read (fd, &FETCH_CHAR (point + inserted - 1) + 1, try); | |
2305 | immediate_quit = 0; | |
570d7624 JB |
2306 | |
2307 | if (this <= 0) | |
2308 | { | |
2309 | how_much = this; | |
2310 | break; | |
2311 | } | |
2312 | ||
2313 | GPT += this; | |
2314 | GAP_SIZE -= this; | |
2315 | ZV += this; | |
2316 | Z += this; | |
2317 | inserted += this; | |
2318 | } | |
2319 | ||
2320 | if (inserted > 0) | |
2321 | MODIFF++; | |
2322 | record_insert (point, inserted); | |
2323 | ||
2324 | close (fd); | |
2325 | ||
2326 | /* Discard the unwind protect */ | |
2327 | specpdl_ptr = specpdl + count; | |
2328 | ||
2329 | if (how_much < 0) | |
2330 | error ("IO error reading %s: %s", | |
2331 | XSTRING (filename)->data, err_str (errno)); | |
2332 | ||
2333 | notfound: | |
32f4334d | 2334 | handled: |
570d7624 | 2335 | |
265a9e55 | 2336 | if (!NILP (visit)) |
570d7624 JB |
2337 | { |
2338 | current_buffer->undo_list = Qnil; | |
2339 | #ifdef APOLLO | |
2340 | stat (XSTRING (filename)->data, &st); | |
2341 | #endif | |
2342 | current_buffer->modtime = st.st_mtime; | |
2343 | current_buffer->save_modified = MODIFF; | |
2344 | current_buffer->auto_save_modified = MODIFF; | |
2345 | XFASTINT (current_buffer->save_length) = Z - BEG; | |
2346 | #ifdef CLASH_DETECTION | |
32f4334d RS |
2347 | if (NILP (handler)) |
2348 | { | |
2349 | if (!NILP (current_buffer->filename)) | |
2350 | unlock_file (current_buffer->filename); | |
2351 | unlock_file (filename); | |
2352 | } | |
570d7624 JB |
2353 | #endif /* CLASH_DETECTION */ |
2354 | current_buffer->filename = filename; | |
2355 | /* If visiting nonexistent file, return nil. */ | |
32f4334d | 2356 | if (current_buffer->modtime == -1) |
570d7624 JB |
2357 | report_file_error ("Opening input file", Fcons (filename, Qnil)); |
2358 | } | |
2359 | ||
2360 | signal_after_change (point, 0, inserted); | |
2361 | ||
32f4334d RS |
2362 | if (!NILP (val)) |
2363 | RETURN_UNGCPRO (val); | |
9b7828a5 JB |
2364 | RETURN_UNGCPRO (Fcons (filename, |
2365 | Fcons (make_number (inserted), | |
2366 | Qnil))); | |
570d7624 JB |
2367 | } |
2368 | ||
2369 | DEFUN ("write-region", Fwrite_region, Swrite_region, 3, 5, | |
2370 | "r\nFWrite region to file: ", | |
2371 | "Write current region into specified file.\n\ | |
2372 | When called from a program, takes three arguments:\n\ | |
2373 | START, END and FILENAME. START and END are buffer positions.\n\ | |
2374 | Optional fourth argument APPEND if non-nil means\n\ | |
2375 | append to existing file contents (if any).\n\ | |
2376 | Optional fifth argument VISIT if t means\n\ | |
2377 | set the last-save-file-modtime of buffer to this file's modtime\n\ | |
2378 | and mark buffer not modified.\n\ | |
2379 | If VISIT is neither t nor nil, it means do not print\n\ | |
2380 | the \"Wrote file\" message.\n\ | |
2381 | Kludgy feature: if START is a string, then that string is written\n\ | |
2382 | to the file, instead of any buffer contents, and END is ignored.") | |
2383 | (start, end, filename, append, visit) | |
2384 | Lisp_Object start, end, filename, append, visit; | |
2385 | { | |
2386 | register int desc; | |
2387 | int failure; | |
2388 | int save_errno; | |
2389 | unsigned char *fn; | |
2390 | struct stat st; | |
2391 | int tem; | |
2392 | int count = specpdl_ptr - specpdl; | |
2393 | #ifdef VMS | |
2394 | unsigned char *fname = 0; /* If non-0, original filename (must rename) */ | |
2395 | #endif /* VMS */ | |
3eac9910 | 2396 | Lisp_Object handler; |
09121adc | 2397 | struct gcpro gcpro1, gcpro2; |
570d7624 JB |
2398 | |
2399 | /* Special kludge to simplify auto-saving */ | |
265a9e55 | 2400 | if (NILP (start)) |
570d7624 JB |
2401 | { |
2402 | XFASTINT (start) = BEG; | |
2403 | XFASTINT (end) = Z; | |
2404 | } | |
2405 | else if (XTYPE (start) != Lisp_String) | |
2406 | validate_region (&start, &end); | |
2407 | ||
09121adc | 2408 | GCPRO2 (start, filename); |
570d7624 | 2409 | filename = Fexpand_file_name (filename, Qnil); |
570d7624 | 2410 | |
32f4334d RS |
2411 | /* If the file name has special constructs in it, |
2412 | call the corresponding file handler. */ | |
2413 | handler = find_file_handler (filename); | |
3eac9910 | 2414 | |
32f4334d RS |
2415 | if (!NILP (handler)) |
2416 | { | |
2417 | Lisp_Object args[7]; | |
2418 | Lisp_Object val; | |
2419 | args[0] = handler; | |
2420 | args[1] = Qwrite_region; | |
2421 | args[2] = start; | |
2422 | args[3] = end; | |
2423 | args[4] = filename; | |
2424 | args[5] = append; | |
2425 | args[6] = visit; | |
2426 | val = Ffuncall (7, args); | |
2427 | ||
2428 | /* Do this before reporting IO error | |
2429 | to avoid a "file has changed on disk" warning on | |
2430 | next attempt to save. */ | |
2431 | if (EQ (visit, Qt)) | |
2432 | { | |
2433 | current_buffer->modtime = 0; | |
2434 | current_buffer->save_modified = MODIFF; | |
2435 | XFASTINT (current_buffer->save_length) = Z - BEG; | |
2436 | current_buffer->filename = filename; | |
2437 | } | |
09121adc | 2438 | UNGCPRO; |
32f4334d RS |
2439 | return val; |
2440 | } | |
2441 | ||
570d7624 JB |
2442 | #ifdef CLASH_DETECTION |
2443 | if (!auto_saving) | |
2444 | lock_file (filename); | |
2445 | #endif /* CLASH_DETECTION */ | |
2446 | ||
09121adc | 2447 | fn = XSTRING (filename)->data; |
570d7624 | 2448 | desc = -1; |
265a9e55 | 2449 | if (!NILP (append)) |
570d7624 JB |
2450 | desc = open (fn, O_WRONLY); |
2451 | ||
2452 | if (desc < 0) | |
2453 | #ifdef VMS | |
2454 | if (auto_saving) /* Overwrite any previous version of autosave file */ | |
2455 | { | |
2456 | vms_truncate (fn); /* if fn exists, truncate to zero length */ | |
2457 | desc = open (fn, O_RDWR); | |
2458 | if (desc < 0) | |
2459 | desc = creat_copy_attrs (XTYPE (current_buffer->filename) == Lisp_String | |
b72dea2a JB |
2460 | ? XSTRING (current_buffer->filename)->data : 0, |
2461 | fn); | |
570d7624 JB |
2462 | } |
2463 | else /* Write to temporary name and rename if no errors */ | |
2464 | { | |
2465 | Lisp_Object temp_name; | |
2466 | temp_name = Ffile_name_directory (filename); | |
2467 | ||
265a9e55 | 2468 | if (!NILP (temp_name)) |
570d7624 JB |
2469 | { |
2470 | temp_name = Fmake_temp_name (concat2 (temp_name, | |
2471 | build_string ("$$SAVE$$"))); | |
2472 | fname = XSTRING (filename)->data; | |
2473 | fn = XSTRING (temp_name)->data; | |
2474 | desc = creat_copy_attrs (fname, fn); | |
2475 | if (desc < 0) | |
2476 | { | |
2477 | /* If we can't open the temporary file, try creating a new | |
2478 | version of the original file. VMS "creat" creates a | |
2479 | new version rather than truncating an existing file. */ | |
2480 | fn = fname; | |
2481 | fname = 0; | |
2482 | desc = creat (fn, 0666); | |
2483 | #if 0 /* This can clobber an existing file and fail to replace it, | |
2484 | if the user runs out of space. */ | |
2485 | if (desc < 0) | |
2486 | { | |
2487 | /* We can't make a new version; | |
2488 | try to truncate and rewrite existing version if any. */ | |
2489 | vms_truncate (fn); | |
2490 | desc = open (fn, O_RDWR); | |
2491 | } | |
2492 | #endif | |
2493 | } | |
2494 | } | |
2495 | else | |
2496 | desc = creat (fn, 0666); | |
2497 | } | |
2498 | #else /* not VMS */ | |
2499 | desc = creat (fn, auto_saving ? auto_save_mode_bits : 0666); | |
2500 | #endif /* not VMS */ | |
2501 | ||
09121adc RS |
2502 | UNGCPRO; |
2503 | ||
570d7624 JB |
2504 | if (desc < 0) |
2505 | { | |
2506 | #ifdef CLASH_DETECTION | |
2507 | save_errno = errno; | |
2508 | if (!auto_saving) unlock_file (filename); | |
2509 | errno = save_errno; | |
2510 | #endif /* CLASH_DETECTION */ | |
2511 | report_file_error ("Opening output file", Fcons (filename, Qnil)); | |
2512 | } | |
2513 | ||
2514 | record_unwind_protect (close_file_unwind, make_number (desc)); | |
2515 | ||
265a9e55 | 2516 | if (!NILP (append)) |
570d7624 JB |
2517 | if (lseek (desc, 0, 2) < 0) |
2518 | { | |
2519 | #ifdef CLASH_DETECTION | |
2520 | if (!auto_saving) unlock_file (filename); | |
2521 | #endif /* CLASH_DETECTION */ | |
2522 | report_file_error ("Lseek error", Fcons (filename, Qnil)); | |
2523 | } | |
2524 | ||
2525 | #ifdef VMS | |
2526 | /* | |
2527 | * Kludge Warning: The VMS C RTL likes to insert carriage returns | |
2528 | * if we do writes that don't end with a carriage return. Furthermore | |
2529 | * it cannot handle writes of more then 16K. The modified | |
2530 | * version of "sys_write" in SYSDEP.C (see comment there) copes with | |
2531 | * this EXCEPT for the last record (iff it doesn't end with a carriage | |
2532 | * return). This implies that if your buffer doesn't end with a carriage | |
2533 | * return, you get one free... tough. However it also means that if | |
2534 | * we make two calls to sys_write (a la the following code) you can | |
2535 | * get one at the gap as well. The easiest way to fix this (honest) | |
2536 | * is to move the gap to the next newline (or the end of the buffer). | |
2537 | * Thus this change. | |
2538 | * | |
2539 | * Yech! | |
2540 | */ | |
2541 | if (GPT > BEG && GPT_ADDR[-1] != '\n') | |
2542 | move_gap (find_next_newline (GPT, 1)); | |
2543 | #endif | |
2544 | ||
2545 | failure = 0; | |
2546 | immediate_quit = 1; | |
2547 | ||
2548 | if (XTYPE (start) == Lisp_String) | |
2549 | { | |
2550 | failure = 0 > e_write (desc, XSTRING (start)->data, | |
2551 | XSTRING (start)->size); | |
2552 | save_errno = errno; | |
2553 | } | |
2554 | else if (XINT (start) != XINT (end)) | |
2555 | { | |
2556 | if (XINT (start) < GPT) | |
2557 | { | |
2558 | register int end1 = XINT (end); | |
2559 | tem = XINT (start); | |
2560 | failure = 0 > e_write (desc, &FETCH_CHAR (tem), | |
2561 | min (GPT, end1) - tem); | |
2562 | save_errno = errno; | |
2563 | } | |
2564 | ||
2565 | if (XINT (end) > GPT && !failure) | |
2566 | { | |
2567 | tem = XINT (start); | |
2568 | tem = max (tem, GPT); | |
2569 | failure = 0 > e_write (desc, &FETCH_CHAR (tem), XINT (end) - tem); | |
2570 | save_errno = errno; | |
2571 | } | |
2572 | } | |
2573 | ||
2574 | immediate_quit = 0; | |
2575 | ||
2576 | #ifndef USG | |
2577 | #ifndef VMS | |
2578 | #ifndef BSD4_1 | |
570d7624 JB |
2579 | /* Note fsync appears to change the modtime on BSD4.2 (both vax and sun). |
2580 | Disk full in NFS may be reported here. */ | |
2581 | if (fsync (desc) < 0) | |
2582 | failure = 1, save_errno = errno; | |
2583 | #endif | |
2584 | #endif | |
570d7624 JB |
2585 | #endif |
2586 | ||
2587 | /* Spurious "file has changed on disk" warnings have been | |
2588 | observed on Suns as well. | |
2589 | It seems that `close' can change the modtime, under nfs. | |
2590 | ||
2591 | (This has supposedly been fixed in Sunos 4, | |
2592 | but who knows about all the other machines with NFS?) */ | |
2593 | #if 0 | |
2594 | ||
2595 | /* On VMS and APOLLO, must do the stat after the close | |
2596 | since closing changes the modtime. */ | |
2597 | #ifndef VMS | |
2598 | #ifndef APOLLO | |
2599 | /* Recall that #if defined does not work on VMS. */ | |
2600 | #define FOO | |
2601 | fstat (desc, &st); | |
2602 | #endif | |
2603 | #endif | |
2604 | #endif | |
2605 | ||
2606 | /* NFS can report a write failure now. */ | |
2607 | if (close (desc) < 0) | |
2608 | failure = 1, save_errno = errno; | |
2609 | ||
2610 | #ifdef VMS | |
2611 | /* If we wrote to a temporary name and had no errors, rename to real name. */ | |
2612 | if (fname) | |
2613 | { | |
2614 | if (!failure) | |
2615 | failure = (rename (fn, fname) != 0), save_errno = errno; | |
2616 | fn = fname; | |
2617 | } | |
2618 | #endif /* VMS */ | |
2619 | ||
2620 | #ifndef FOO | |
2621 | stat (fn, &st); | |
2622 | #endif | |
2623 | /* Discard the unwind protect */ | |
2624 | specpdl_ptr = specpdl + count; | |
2625 | ||
2626 | #ifdef CLASH_DETECTION | |
2627 | if (!auto_saving) | |
2628 | unlock_file (filename); | |
2629 | #endif /* CLASH_DETECTION */ | |
2630 | ||
2631 | /* Do this before reporting IO error | |
2632 | to avoid a "file has changed on disk" warning on | |
2633 | next attempt to save. */ | |
2634 | if (EQ (visit, Qt)) | |
2635 | current_buffer->modtime = st.st_mtime; | |
2636 | ||
2637 | if (failure) | |
2638 | error ("IO error writing %s: %s", fn, err_str (save_errno)); | |
2639 | ||
2640 | if (EQ (visit, Qt)) | |
2641 | { | |
2642 | current_buffer->save_modified = MODIFF; | |
2643 | XFASTINT (current_buffer->save_length) = Z - BEG; | |
2644 | current_buffer->filename = filename; | |
2645 | } | |
265a9e55 | 2646 | else if (!NILP (visit)) |
570d7624 JB |
2647 | return Qnil; |
2648 | ||
2649 | if (!auto_saving) | |
2650 | message ("Wrote %s", fn); | |
2651 | ||
2652 | return Qnil; | |
2653 | } | |
2654 | ||
2655 | int | |
2656 | e_write (desc, addr, len) | |
2657 | int desc; | |
2658 | register char *addr; | |
2659 | register int len; | |
2660 | { | |
2661 | char buf[16 * 1024]; | |
2662 | register char *p, *end; | |
2663 | ||
2664 | if (!EQ (current_buffer->selective_display, Qt)) | |
2665 | return write (desc, addr, len) - len; | |
2666 | else | |
2667 | { | |
2668 | p = buf; | |
2669 | end = p + sizeof buf; | |
2670 | while (len--) | |
2671 | { | |
2672 | if (p == end) | |
2673 | { | |
2674 | if (write (desc, buf, sizeof buf) != sizeof buf) | |
2675 | return -1; | |
2676 | p = buf; | |
2677 | } | |
2678 | *p = *addr++; | |
2679 | if (*p++ == '\015') | |
2680 | p[-1] = '\n'; | |
2681 | } | |
2682 | if (p != buf) | |
2683 | if (write (desc, buf, p - buf) != p - buf) | |
2684 | return -1; | |
2685 | } | |
2686 | return 0; | |
2687 | } | |
2688 | ||
2689 | DEFUN ("verify-visited-file-modtime", Fverify_visited_file_modtime, | |
2690 | Sverify_visited_file_modtime, 1, 1, 0, | |
2691 | "Return t if last mod time of BUF's visited file matches what BUF records.\n\ | |
2692 | This means that the file has not been changed since it was visited or saved.") | |
2693 | (buf) | |
2694 | Lisp_Object buf; | |
2695 | { | |
2696 | struct buffer *b; | |
2697 | struct stat st; | |
32f4334d | 2698 | Lisp_Object handler; |
570d7624 JB |
2699 | |
2700 | CHECK_BUFFER (buf, 0); | |
2701 | b = XBUFFER (buf); | |
2702 | ||
2703 | if (XTYPE (b->filename) != Lisp_String) return Qt; | |
2704 | if (b->modtime == 0) return Qt; | |
2705 | ||
32f4334d RS |
2706 | /* If the file name has special constructs in it, |
2707 | call the corresponding file handler. */ | |
3eac9910 | 2708 | handler = find_file_handler (b->filename); |
32f4334d | 2709 | if (!NILP (handler)) |
09121adc | 2710 | return call2 (handler, Qverify_visited_file_modtime, buf); |
32f4334d | 2711 | |
570d7624 JB |
2712 | if (stat (XSTRING (b->filename)->data, &st) < 0) |
2713 | { | |
2714 | /* If the file doesn't exist now and didn't exist before, | |
2715 | we say that it isn't modified, provided the error is a tame one. */ | |
2716 | if (errno == ENOENT || errno == EACCES || errno == ENOTDIR) | |
2717 | st.st_mtime = -1; | |
2718 | else | |
2719 | st.st_mtime = 0; | |
2720 | } | |
2721 | if (st.st_mtime == b->modtime | |
2722 | /* If both are positive, accept them if they are off by one second. */ | |
2723 | || (st.st_mtime > 0 && b->modtime > 0 | |
2724 | && (st.st_mtime == b->modtime + 1 | |
2725 | || st.st_mtime == b->modtime - 1))) | |
2726 | return Qt; | |
2727 | return Qnil; | |
2728 | } | |
2729 | ||
2730 | DEFUN ("clear-visited-file-modtime", Fclear_visited_file_modtime, | |
2731 | Sclear_visited_file_modtime, 0, 0, 0, | |
2732 | "Clear out records of last mod time of visited file.\n\ | |
2733 | Next attempt to save will certainly not complain of a discrepancy.") | |
2734 | () | |
2735 | { | |
2736 | current_buffer->modtime = 0; | |
2737 | return Qnil; | |
2738 | } | |
2739 | ||
2740 | DEFUN ("set-visited-file-modtime", Fset_visited_file_modtime, | |
2741 | Sset_visited_file_modtime, 0, 0, 0, | |
2742 | "Update buffer's recorded modification time from the visited file's time.\n\ | |
2743 | Useful if the buffer was not read from the file normally\n\ | |
2744 | or if the file itself has been changed for some known benign reason.") | |
2745 | () | |
2746 | { | |
2747 | register Lisp_Object filename; | |
2748 | struct stat st; | |
3eac9910 | 2749 | Lisp_Object handler; |
570d7624 JB |
2750 | |
2751 | filename = Fexpand_file_name (current_buffer->filename, Qnil); | |
32f4334d RS |
2752 | |
2753 | /* If the file name has special constructs in it, | |
2754 | call the corresponding file handler. */ | |
2755 | handler = find_file_handler (filename); | |
2756 | if (!NILP (handler)) | |
2757 | current_buffer->modtime = 0; | |
570d7624 | 2758 | |
32f4334d | 2759 | else if (stat (XSTRING (filename)->data, &st) >= 0) |
570d7624 JB |
2760 | current_buffer->modtime = st.st_mtime; |
2761 | ||
2762 | return Qnil; | |
2763 | } | |
2764 | \f | |
2765 | Lisp_Object | |
2766 | auto_save_error () | |
2767 | { | |
2768 | unsigned char *name = XSTRING (current_buffer->name)->data; | |
2769 | ||
2770 | ring_bell (); | |
2771 | message ("Autosaving...error for %s", name); | |
de49a6d3 | 2772 | Fsleep_for (make_number (1), Qnil); |
570d7624 | 2773 | message ("Autosaving...error!for %s", name); |
de49a6d3 | 2774 | Fsleep_for (make_number (1), Qnil); |
570d7624 | 2775 | message ("Autosaving...error for %s", name); |
de49a6d3 | 2776 | Fsleep_for (make_number (1), Qnil); |
570d7624 JB |
2777 | return Qnil; |
2778 | } | |
2779 | ||
2780 | Lisp_Object | |
2781 | auto_save_1 () | |
2782 | { | |
2783 | unsigned char *fn; | |
2784 | struct stat st; | |
2785 | ||
2786 | /* Get visited file's mode to become the auto save file's mode. */ | |
2787 | if (stat (XSTRING (current_buffer->filename)->data, &st) >= 0) | |
2788 | /* But make sure we can overwrite it later! */ | |
2789 | auto_save_mode_bits = st.st_mode | 0600; | |
2790 | else | |
2791 | auto_save_mode_bits = 0666; | |
2792 | ||
2793 | return | |
2794 | Fwrite_region (Qnil, Qnil, | |
2795 | current_buffer->auto_save_file_name, | |
2796 | Qnil, Qlambda); | |
2797 | } | |
2798 | ||
2799 | DEFUN ("do-auto-save", Fdo_auto_save, Sdo_auto_save, 0, 2, "", | |
2800 | "Auto-save all buffers that need it.\n\ | |
2801 | This is all buffers that have auto-saving enabled\n\ | |
2802 | and are changed since last auto-saved.\n\ | |
2803 | Auto-saving writes the buffer into a file\n\ | |
2804 | so that your editing is not lost if the system crashes.\n\ | |
2805 | This file is not the file you visited; that changes only when you save.\n\n\ | |
2806 | Non-nil first argument means do not print any message if successful.\n\ | |
4746118a | 2807 | Non-nil second argument means save only current buffer.") |
570d7624 JB |
2808 | (nomsg) |
2809 | Lisp_Object nomsg; | |
2810 | { | |
2811 | struct buffer *old = current_buffer, *b; | |
2812 | Lisp_Object tail, buf; | |
2813 | int auto_saved = 0; | |
2814 | char *omessage = echo_area_glyphs; | |
2815 | extern minibuf_level; | |
2816 | ||
2817 | /* No GCPRO needed, because (when it matters) all Lisp_Object variables | |
2818 | point to non-strings reached from Vbuffer_alist. */ | |
2819 | ||
2820 | auto_saving = 1; | |
2821 | if (minibuf_level) | |
2822 | nomsg = Qt; | |
2823 | ||
2824 | /* Vrun_hooks is nil before emacs is dumped, and inc-vers.el will | |
2825 | eventually call do-auto-save, so don't err here in that case. */ | |
265a9e55 | 2826 | if (!NILP (Vrun_hooks)) |
570d7624 JB |
2827 | call1 (Vrun_hooks, intern ("auto-save-hook")); |
2828 | ||
2829 | for (tail = Vbuffer_alist; XGCTYPE (tail) == Lisp_Cons; | |
2830 | tail = XCONS (tail)->cdr) | |
2831 | { | |
2832 | buf = XCONS (XCONS (tail)->car)->cdr; | |
2833 | b = XBUFFER (buf); | |
2834 | /* Check for auto save enabled | |
2835 | and file changed since last auto save | |
2836 | and file changed since last real save. */ | |
2837 | if (XTYPE (b->auto_save_file_name) == Lisp_String | |
2838 | && b->save_modified < BUF_MODIFF (b) | |
2839 | && b->auto_save_modified < BUF_MODIFF (b)) | |
2840 | { | |
2841 | if ((XFASTINT (b->save_length) * 10 | |
2842 | > (BUF_Z (b) - BUF_BEG (b)) * 13) | |
2843 | /* A short file is likely to change a large fraction; | |
2844 | spare the user annoying messages. */ | |
2845 | && XFASTINT (b->save_length) > 5000 | |
2846 | /* These messages are frequent and annoying for `*mail*'. */ | |
2847 | && !EQ (b->filename, Qnil)) | |
2848 | { | |
2849 | /* It has shrunk too much; turn off auto-saving here. */ | |
2850 | message ("Buffer %s has shrunk a lot; auto save turned off there", | |
2851 | XSTRING (b->name)->data); | |
2852 | /* User can reenable saving with M-x auto-save. */ | |
2853 | b->auto_save_file_name = Qnil; | |
2854 | /* Prevent warning from repeating if user does so. */ | |
2855 | XFASTINT (b->save_length) = 0; | |
2fd3c56b | 2856 | Fsleep_for (make_number (1), Qnil); |
570d7624 JB |
2857 | continue; |
2858 | } | |
2859 | set_buffer_internal (b); | |
265a9e55 | 2860 | if (!auto_saved && NILP (nomsg)) |
570d7624 JB |
2861 | message1 ("Auto-saving..."); |
2862 | internal_condition_case (auto_save_1, Qt, auto_save_error); | |
2863 | auto_saved++; | |
2864 | b->auto_save_modified = BUF_MODIFF (b); | |
2865 | XFASTINT (current_buffer->save_length) = Z - BEG; | |
2866 | set_buffer_internal (old); | |
2867 | } | |
2868 | } | |
2869 | ||
b67f2ca5 RS |
2870 | /* Prevent another auto save till enough input events come in. */ |
2871 | record_auto_save (); | |
570d7624 | 2872 | |
265a9e55 | 2873 | if (auto_saved && NILP (nomsg)) |
570d7624 JB |
2874 | message1 (omessage ? omessage : "Auto-saving...done"); |
2875 | ||
2876 | auto_saving = 0; | |
2877 | return Qnil; | |
2878 | } | |
2879 | ||
2880 | DEFUN ("set-buffer-auto-saved", Fset_buffer_auto_saved, | |
2881 | Sset_buffer_auto_saved, 0, 0, 0, | |
2882 | "Mark current buffer as auto-saved with its current text.\n\ | |
2883 | No auto-save file will be written until the buffer changes again.") | |
2884 | () | |
2885 | { | |
2886 | current_buffer->auto_save_modified = MODIFF; | |
2887 | XFASTINT (current_buffer->save_length) = Z - BEG; | |
2888 | return Qnil; | |
2889 | } | |
2890 | ||
2891 | DEFUN ("recent-auto-save-p", Frecent_auto_save_p, Srecent_auto_save_p, | |
2892 | 0, 0, 0, | |
2893 | "Return t if buffer has been auto-saved since last read in or saved.") | |
2894 | () | |
2895 | { | |
2896 | return (current_buffer->save_modified < current_buffer->auto_save_modified) ? Qt : Qnil; | |
2897 | } | |
2898 | \f | |
2899 | /* Reading and completing file names */ | |
2900 | extern Lisp_Object Ffile_name_completion (), Ffile_name_all_completions (); | |
2901 | ||
2902 | DEFUN ("read-file-name-internal", Fread_file_name_internal, Sread_file_name_internal, | |
2903 | 3, 3, 0, | |
2904 | "Internal subroutine for read-file-name. Do not call this.") | |
2905 | (string, dir, action) | |
2906 | Lisp_Object string, dir, action; | |
2907 | /* action is nil for complete, t for return list of completions, | |
2908 | lambda for verify final value */ | |
2909 | { | |
2910 | Lisp_Object name, specdir, realdir, val, orig_string; | |
09121adc RS |
2911 | int changed; |
2912 | struct gcpro gcpro1, gcpro2, gcpro3, gcpro4; | |
2913 | ||
2914 | realdir = dir; | |
2915 | name = string; | |
2916 | orig_string = Qnil; | |
2917 | specdir = Qnil; | |
2918 | changed = 0; | |
2919 | /* No need to protect ACTION--we only compare it with t and nil. */ | |
2920 | GCPRO4 (string, realdir, name, specdir); | |
570d7624 JB |
2921 | |
2922 | if (XSTRING (string)->size == 0) | |
2923 | { | |
570d7624 | 2924 | if (EQ (action, Qlambda)) |
09121adc RS |
2925 | { |
2926 | UNGCPRO; | |
2927 | return Qnil; | |
2928 | } | |
570d7624 JB |
2929 | } |
2930 | else | |
2931 | { | |
2932 | orig_string = string; | |
2933 | string = Fsubstitute_in_file_name (string); | |
09121adc | 2934 | changed = NILP (Fstring_equal (string, orig_string)); |
570d7624 | 2935 | name = Ffile_name_nondirectory (string); |
09121adc RS |
2936 | val = Ffile_name_directory (string); |
2937 | if (! NILP (val)) | |
2938 | realdir = Fexpand_file_name (val, realdir); | |
570d7624 JB |
2939 | } |
2940 | ||
265a9e55 | 2941 | if (NILP (action)) |
570d7624 JB |
2942 | { |
2943 | specdir = Ffile_name_directory (string); | |
2944 | val = Ffile_name_completion (name, realdir); | |
09121adc | 2945 | UNGCPRO; |
570d7624 JB |
2946 | if (XTYPE (val) != Lisp_String) |
2947 | { | |
09121adc | 2948 | if (changed) |
570d7624 | 2949 | return string; |
09121adc | 2950 | return val; |
570d7624 JB |
2951 | } |
2952 | ||
265a9e55 | 2953 | if (!NILP (specdir)) |
570d7624 JB |
2954 | val = concat2 (specdir, val); |
2955 | #ifndef VMS | |
2956 | { | |
2957 | register unsigned char *old, *new; | |
2958 | register int n; | |
2959 | int osize, count; | |
2960 | ||
2961 | osize = XSTRING (val)->size; | |
2962 | /* Quote "$" as "$$" to get it past substitute-in-file-name */ | |
2963 | for (n = osize, count = 0, old = XSTRING (val)->data; n > 0; n--) | |
2964 | if (*old++ == '$') count++; | |
2965 | if (count > 0) | |
2966 | { | |
2967 | old = XSTRING (val)->data; | |
2968 | val = Fmake_string (make_number (osize + count), make_number (0)); | |
2969 | new = XSTRING (val)->data; | |
2970 | for (n = osize; n > 0; n--) | |
2971 | if (*old != '$') | |
2972 | *new++ = *old++; | |
2973 | else | |
2974 | { | |
2975 | *new++ = '$'; | |
2976 | *new++ = '$'; | |
2977 | old++; | |
2978 | } | |
2979 | } | |
2980 | } | |
2981 | #endif /* Not VMS */ | |
09121adc | 2982 | return val; |
570d7624 | 2983 | } |
09121adc | 2984 | UNGCPRO; |
570d7624 JB |
2985 | |
2986 | if (EQ (action, Qt)) | |
2987 | return Ffile_name_all_completions (name, realdir); | |
2988 | /* Only other case actually used is ACTION = lambda */ | |
2989 | #ifdef VMS | |
2990 | /* Supposedly this helps commands such as `cd' that read directory names, | |
2991 | but can someone explain how it helps them? -- RMS */ | |
2992 | if (XSTRING (name)->size == 0) | |
2993 | return Qt; | |
2994 | #endif /* VMS */ | |
2995 | return Ffile_exists_p (string); | |
2996 | } | |
2997 | ||
2998 | DEFUN ("read-file-name", Fread_file_name, Sread_file_name, 1, 5, 0, | |
2999 | "Read file name, prompting with PROMPT and completing in directory DIR.\n\ | |
3000 | Value is not expanded---you must call `expand-file-name' yourself.\n\ | |
3001 | Default name to DEFAULT if user enters a null string.\n\ | |
3002 | (If DEFAULT is omitted, the visited file name is used.)\n\ | |
3003 | Fourth arg MUSTMATCH non-nil means require existing file's name.\n\ | |
3004 | Non-nil and non-t means also require confirmation after completion.\n\ | |
3005 | Fifth arg INITIAL specifies text to start with.\n\ | |
3006 | DIR defaults to current buffer's directory default.") | |
3007 | (prompt, dir, defalt, mustmatch, initial) | |
3008 | Lisp_Object prompt, dir, defalt, mustmatch, initial; | |
3009 | { | |
85b5fe07 | 3010 | Lisp_Object val, insdef, insdef1, tem; |
570d7624 JB |
3011 | struct gcpro gcpro1, gcpro2; |
3012 | register char *homedir; | |
3013 | int count; | |
3014 | ||
265a9e55 | 3015 | if (NILP (dir)) |
570d7624 | 3016 | dir = current_buffer->directory; |
265a9e55 | 3017 | if (NILP (defalt)) |
570d7624 JB |
3018 | defalt = current_buffer->filename; |
3019 | ||
3020 | /* If dir starts with user's homedir, change that to ~. */ | |
3021 | homedir = (char *) egetenv ("HOME"); | |
3022 | if (homedir != 0 | |
3023 | && XTYPE (dir) == Lisp_String | |
3024 | && !strncmp (homedir, XSTRING (dir)->data, strlen (homedir)) | |
3025 | && XSTRING (dir)->data[strlen (homedir)] == '/') | |
3026 | { | |
3027 | dir = make_string (XSTRING (dir)->data + strlen (homedir) - 1, | |
3028 | XSTRING (dir)->size - strlen (homedir) + 1); | |
3029 | XSTRING (dir)->data[0] = '~'; | |
3030 | } | |
3031 | ||
3032 | if (insert_default_directory) | |
3033 | { | |
3034 | insdef = dir; | |
85b5fe07 | 3035 | insdef1 = dir; |
265a9e55 | 3036 | if (!NILP (initial)) |
570d7624 | 3037 | { |
15c65264 | 3038 | Lisp_Object args[2], pos; |
570d7624 JB |
3039 | |
3040 | args[0] = insdef; | |
3041 | args[1] = initial; | |
3042 | insdef = Fconcat (2, args); | |
509b05ed | 3043 | pos = make_number (XSTRING (dir)->size); |
85b5fe07 | 3044 | insdef1 = Fcons (insdef, pos); |
570d7624 | 3045 | } |
570d7624 JB |
3046 | } |
3047 | else | |
85b5fe07 | 3048 | insdef = Qnil, insdef1 = Qnil; |
570d7624 JB |
3049 | |
3050 | #ifdef VMS | |
3051 | count = specpdl_ptr - specpdl; | |
3052 | specbind (intern ("completion-ignore-case"), Qt); | |
3053 | #endif | |
3054 | ||
3055 | GCPRO2 (insdef, defalt); | |
3056 | val = Fcompleting_read (prompt, intern ("read-file-name-internal"), | |
85b5fe07 | 3057 | dir, mustmatch, insdef1, |
15c65264 | 3058 | Qfile_name_history); |
570d7624 JB |
3059 | |
3060 | #ifdef VMS | |
3061 | unbind_to (count, Qnil); | |
3062 | #endif | |
3063 | ||
3064 | UNGCPRO; | |
265a9e55 | 3065 | if (NILP (val)) |
570d7624 JB |
3066 | error ("No file name specified"); |
3067 | tem = Fstring_equal (val, insdef); | |
265a9e55 | 3068 | if (!NILP (tem) && !NILP (defalt)) |
570d7624 JB |
3069 | return defalt; |
3070 | return Fsubstitute_in_file_name (val); | |
3071 | } | |
3072 | ||
3073 | #if 0 /* Old version */ | |
3074 | DEFUN ("read-file-name", Fread_file_name, Sread_file_name, 1, 5, 0, | |
3075 | "Read file name, prompting with PROMPT and completing in directory DIR.\n\ | |
3076 | Value is not expanded---you must call `expand-file-name' yourself.\n\ | |
3077 | Default name to DEFAULT if user enters a null string.\n\ | |
3078 | (If DEFAULT is omitted, the visited file name is used.)\n\ | |
3079 | Fourth arg MUSTMATCH non-nil means require existing file's name.\n\ | |
3080 | Non-nil and non-t means also require confirmation after completion.\n\ | |
3081 | Fifth arg INITIAL specifies text to start with.\n\ | |
3082 | DIR defaults to current buffer's directory default.") | |
3083 | (prompt, dir, defalt, mustmatch, initial) | |
3084 | Lisp_Object prompt, dir, defalt, mustmatch, initial; | |
3085 | { | |
3086 | Lisp_Object val, insdef, tem; | |
3087 | struct gcpro gcpro1, gcpro2; | |
3088 | register char *homedir; | |
3089 | int count; | |
3090 | ||
265a9e55 | 3091 | if (NILP (dir)) |
570d7624 | 3092 | dir = current_buffer->directory; |
265a9e55 | 3093 | if (NILP (defalt)) |
570d7624 JB |
3094 | defalt = current_buffer->filename; |
3095 | ||
3096 | /* If dir starts with user's homedir, change that to ~. */ | |
3097 | homedir = (char *) egetenv ("HOME"); | |
3098 | if (homedir != 0 | |
3099 | && XTYPE (dir) == Lisp_String | |
3100 | && !strncmp (homedir, XSTRING (dir)->data, strlen (homedir)) | |
3101 | && XSTRING (dir)->data[strlen (homedir)] == '/') | |
3102 | { | |
3103 | dir = make_string (XSTRING (dir)->data + strlen (homedir) - 1, | |
3104 | XSTRING (dir)->size - strlen (homedir) + 1); | |
3105 | XSTRING (dir)->data[0] = '~'; | |
3106 | } | |
3107 | ||
265a9e55 | 3108 | if (!NILP (initial)) |
570d7624 JB |
3109 | insdef = initial; |
3110 | else if (insert_default_directory) | |
3111 | insdef = dir; | |
3112 | else | |
3113 | insdef = build_string (""); | |
3114 | ||
3115 | #ifdef VMS | |
3116 | count = specpdl_ptr - specpdl; | |
3117 | specbind (intern ("completion-ignore-case"), Qt); | |
3118 | #endif | |
3119 | ||
3120 | GCPRO2 (insdef, defalt); | |
3121 | val = Fcompleting_read (prompt, intern ("read-file-name-internal"), | |
3122 | dir, mustmatch, | |
15c65264 RS |
3123 | insert_default_directory ? insdef : Qnil, |
3124 | Qfile_name_history); | |
570d7624 JB |
3125 | |
3126 | #ifdef VMS | |
3127 | unbind_to (count, Qnil); | |
3128 | #endif | |
3129 | ||
3130 | UNGCPRO; | |
265a9e55 | 3131 | if (NILP (val)) |
570d7624 JB |
3132 | error ("No file name specified"); |
3133 | tem = Fstring_equal (val, insdef); | |
265a9e55 | 3134 | if (!NILP (tem) && !NILP (defalt)) |
570d7624 JB |
3135 | return defalt; |
3136 | return Fsubstitute_in_file_name (val); | |
3137 | } | |
3138 | #endif /* Old version */ | |
3139 | \f | |
3140 | syms_of_fileio () | |
3141 | { | |
0bf2eed2 RS |
3142 | Qexpand_file_name = intern ("expand-file-name"); |
3143 | Qdirectory_file_name = intern ("directory-file-name"); | |
3144 | Qfile_name_directory = intern ("file-name-directory"); | |
3145 | Qfile_name_nondirectory = intern ("file-name-nondirectory"); | |
3146 | Qfile_name_as_directory = intern ("file-name-as-directory"); | |
32f4334d RS |
3147 | Qcopy_file = intern ("copy-file"); |
3148 | Qmake_directory = intern ("make-directory"); | |
3149 | Qdelete_directory = intern ("delete-directory"); | |
3150 | Qdelete_file = intern ("delete-file"); | |
3151 | Qrename_file = intern ("rename-file"); | |
3152 | Qadd_name_to_file = intern ("add-name-to-file"); | |
3153 | Qmake_symbolic_link = intern ("make-symbolic-link"); | |
3154 | Qfile_exists_p = intern ("file-exists-p"); | |
3155 | Qfile_executable_p = intern ("file-executable-p"); | |
3156 | Qfile_readable_p = intern ("file-readable-p"); | |
3157 | Qfile_symlink_p = intern ("file-symlink-p"); | |
3158 | Qfile_writable_p = intern ("file-writable-p"); | |
3159 | Qfile_directory_p = intern ("file-directory-p"); | |
3160 | Qfile_accessible_directory_p = intern ("file-accessible-directory-p"); | |
3161 | Qfile_modes = intern ("file-modes"); | |
3162 | Qset_file_modes = intern ("set-file-modes"); | |
3163 | Qfile_newer_than_file_p = intern ("file-newer-than-file-p"); | |
3164 | Qinsert_file_contents = intern ("insert-file-contents"); | |
3165 | Qwrite_region = intern ("write-region"); | |
3166 | Qverify_visited_file_modtime = intern ("verify-visited-file-modtime"); | |
3167 | ||
15c65264 RS |
3168 | Qfile_name_history = intern ("file-name-history"); |
3169 | Fset (Qfile_name_history, Qnil); | |
3170 | ||
3171 | staticpro (&Qcopy_file); | |
3172 | staticpro (&Qmake_directory); | |
3173 | staticpro (&Qdelete_directory); | |
3174 | staticpro (&Qdelete_file); | |
3175 | staticpro (&Qrename_file); | |
3176 | staticpro (&Qadd_name_to_file); | |
3177 | staticpro (&Qmake_symbolic_link); | |
3178 | staticpro (&Qfile_exists_p); | |
3179 | staticpro (&Qfile_executable_p); | |
3180 | staticpro (&Qfile_readable_p); | |
3181 | staticpro (&Qfile_symlink_p); | |
3182 | staticpro (&Qfile_writable_p); | |
3183 | staticpro (&Qfile_directory_p); | |
3184 | staticpro (&Qfile_accessible_directory_p); | |
3185 | staticpro (&Qfile_modes); | |
3186 | staticpro (&Qset_file_modes); | |
3187 | staticpro (&Qfile_newer_than_file_p); | |
3188 | staticpro (&Qinsert_file_contents); | |
3189 | staticpro (&Qwrite_region); | |
3190 | staticpro (&Qverify_visited_file_modtime); | |
3191 | staticpro (&Qfile_name_history); | |
3192 | ||
570d7624 JB |
3193 | Qfile_error = intern ("file-error"); |
3194 | staticpro (&Qfile_error); | |
3195 | Qfile_already_exists = intern("file-already-exists"); | |
3196 | staticpro (&Qfile_already_exists); | |
3197 | ||
3198 | Fput (Qfile_error, Qerror_conditions, | |
3199 | Fcons (Qfile_error, Fcons (Qerror, Qnil))); | |
3200 | Fput (Qfile_error, Qerror_message, | |
3201 | build_string ("File error")); | |
3202 | ||
3203 | Fput (Qfile_already_exists, Qerror_conditions, | |
3204 | Fcons (Qfile_already_exists, | |
3205 | Fcons (Qfile_error, Fcons (Qerror, Qnil)))); | |
3206 | Fput (Qfile_already_exists, Qerror_message, | |
3207 | build_string ("File already exists")); | |
3208 | ||
3209 | DEFVAR_BOOL ("insert-default-directory", &insert_default_directory, | |
3210 | "*Non-nil means when reading a filename start with default dir in minibuffer."); | |
3211 | insert_default_directory = 1; | |
3212 | ||
3213 | DEFVAR_BOOL ("vms-stmlf-recfm", &vms_stmlf_recfm, | |
3214 | "*Non-nil means write new files with record format `stmlf'.\n\ | |
3215 | nil means use format `var'. This variable is meaningful only on VMS."); | |
3216 | vms_stmlf_recfm = 0; | |
3217 | ||
1d1826db RS |
3218 | DEFVAR_LISP ("file-name-handler-alist", &Vfile_name_handler_alist, |
3219 | "*Alist of elements (REGEXP . HANDLER) for file names handled specially.\n\ | |
3220 | If a file name matches REGEXP, then all I/O on that file is done by calling\n\ | |
3221 | HANDLER.\n\ | |
3222 | \n\ | |
3223 | The first argument given to HANDLER is the name of the I/O primitive\n\ | |
3224 | to be handled; the remaining arguments are the arguments that were\n\ | |
3225 | passed to that primitive. For example, if you do\n\ | |
3226 | (file-exists-p FILENAME)\n\ | |
3227 | and FILENAME is handled by HANDLER, then HANDLER is called like this:\n\ | |
a5f8804e | 3228 | (funcall HANDLER 'file-exists-p FILENAME)"); |
09121adc RS |
3229 | Vfile_name_handler_alist = Qnil; |
3230 | ||
570d7624 JB |
3231 | defsubr (&Sfile_name_directory); |
3232 | defsubr (&Sfile_name_nondirectory); | |
3233 | defsubr (&Sfile_name_as_directory); | |
3234 | defsubr (&Sdirectory_file_name); | |
3235 | defsubr (&Smake_temp_name); | |
3236 | defsubr (&Sexpand_file_name); | |
3237 | defsubr (&Ssubstitute_in_file_name); | |
3238 | defsubr (&Scopy_file); | |
3239 | defsubr (&Smake_directory); | |
aa734e17 | 3240 | defsubr (&Sdelete_directory); |
570d7624 JB |
3241 | defsubr (&Sdelete_file); |
3242 | defsubr (&Srename_file); | |
3243 | defsubr (&Sadd_name_to_file); | |
3244 | #ifdef S_IFLNK | |
3245 | defsubr (&Smake_symbolic_link); | |
3246 | #endif /* S_IFLNK */ | |
3247 | #ifdef VMS | |
3248 | defsubr (&Sdefine_logical_name); | |
3249 | #endif /* VMS */ | |
3250 | #ifdef HPUX_NET | |
3251 | defsubr (&Ssysnetunam); | |
3252 | #endif /* HPUX_NET */ | |
3253 | defsubr (&Sfile_name_absolute_p); | |
3254 | defsubr (&Sfile_exists_p); | |
3255 | defsubr (&Sfile_executable_p); | |
3256 | defsubr (&Sfile_readable_p); | |
3257 | defsubr (&Sfile_writable_p); | |
3258 | defsubr (&Sfile_symlink_p); | |
3259 | defsubr (&Sfile_directory_p); | |
b72dea2a | 3260 | defsubr (&Sfile_accessible_directory_p); |
570d7624 JB |
3261 | defsubr (&Sfile_modes); |
3262 | defsubr (&Sset_file_modes); | |
36a8c287 JB |
3263 | defsubr (&Sset_umask); |
3264 | defsubr (&Sumask); | |
570d7624 JB |
3265 | defsubr (&Sfile_newer_than_file_p); |
3266 | defsubr (&Sinsert_file_contents); | |
3267 | defsubr (&Swrite_region); | |
3268 | defsubr (&Sverify_visited_file_modtime); | |
3269 | defsubr (&Sclear_visited_file_modtime); | |
3270 | defsubr (&Sset_visited_file_modtime); | |
3271 | defsubr (&Sdo_auto_save); | |
3272 | defsubr (&Sset_buffer_auto_saved); | |
3273 | defsubr (&Srecent_auto_save_p); | |
3274 | ||
3275 | defsubr (&Sread_file_name_internal); | |
3276 | defsubr (&Sread_file_name); | |
85ffea93 | 3277 | |
483a2e10 | 3278 | #ifdef unix |
85ffea93 | 3279 | defsubr (&Sunix_sync); |
483a2e10 | 3280 | #endif |
570d7624 | 3281 | } |