Commit | Line | Data |
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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 | 54 | #include "lisp.h" |
8d4e077b | 55 | #include "intervals.h" |
570d7624 JB |
56 | #include "buffer.h" |
57 | #include "window.h" | |
58 | ||
59 | #ifdef VMS | |
570d7624 JB |
60 | #include <file.h> |
61 | #include <rmsdef.h> | |
62 | #include <fab.h> | |
63 | #include <nam.h> | |
64 | #endif | |
65 | ||
de5bf5d3 | 66 | #include "systime.h" |
570d7624 JB |
67 | |
68 | #ifdef HPUX | |
69 | #include <netio.h> | |
9b7828a5 | 70 | #ifndef HPUX8 |
570d7624 JB |
71 | #include <errnet.h> |
72 | #endif | |
9b7828a5 | 73 | #endif |
570d7624 JB |
74 | |
75 | #ifndef O_WRONLY | |
76 | #define O_WRONLY 1 | |
77 | #endif | |
78 | ||
79 | #define min(a, b) ((a) < (b) ? (a) : (b)) | |
80 | #define max(a, b) ((a) > (b) ? (a) : (b)) | |
81 | ||
82 | /* Nonzero during writing of auto-save files */ | |
83 | int auto_saving; | |
84 | ||
85 | /* Set by auto_save_1 to mode of original file so Fwrite_region will create | |
86 | a new file with the same mode as the original */ | |
87 | int auto_save_mode_bits; | |
88 | ||
32f4334d RS |
89 | /* Alist of elements (REGEXP . HANDLER) for file names |
90 | whose I/O is done with a special handler. */ | |
91 | Lisp_Object Vfile_name_handler_alist; | |
92 | ||
570d7624 JB |
93 | /* Nonzero means, when reading a filename in the minibuffer, |
94 | start out by inserting the default directory into the minibuffer. */ | |
95 | int insert_default_directory; | |
96 | ||
97 | /* On VMS, nonzero means write new files with record format stmlf. | |
98 | Zero means use var format. */ | |
99 | int vms_stmlf_recfm; | |
100 | ||
101 | Lisp_Object Qfile_error, Qfile_already_exists; | |
102 | ||
15c65264 RS |
103 | Lisp_Object Qfile_name_history; |
104 | ||
570d7624 JB |
105 | report_file_error (string, data) |
106 | char *string; | |
107 | Lisp_Object data; | |
108 | { | |
109 | Lisp_Object errstring; | |
110 | ||
111 | if (errno >= 0 && errno < sys_nerr) | |
112 | errstring = build_string (sys_errlist[errno]); | |
113 | else | |
114 | errstring = build_string ("undocumented error code"); | |
115 | ||
116 | /* System error messages are capitalized. Downcase the initial | |
117 | unless it is followed by a slash. */ | |
118 | if (XSTRING (errstring)->data[1] != '/') | |
119 | XSTRING (errstring)->data[0] = DOWNCASE (XSTRING (errstring)->data[0]); | |
120 | ||
121 | while (1) | |
122 | Fsignal (Qfile_error, | |
123 | Fcons (build_string (string), Fcons (errstring, data))); | |
124 | } | |
b5148e85 RS |
125 | |
126 | close_file_unwind (fd) | |
127 | Lisp_Object fd; | |
128 | { | |
129 | close (XFASTINT (fd)); | |
130 | } | |
570d7624 | 131 | \f |
0bf2eed2 RS |
132 | Lisp_Object Qexpand_file_name; |
133 | Lisp_Object Qdirectory_file_name; | |
134 | Lisp_Object Qfile_name_directory; | |
135 | Lisp_Object Qfile_name_nondirectory; | |
642ef245 | 136 | Lisp_Object Qunhandled_file_name_directory; |
0bf2eed2 | 137 | Lisp_Object Qfile_name_as_directory; |
32f4334d RS |
138 | Lisp_Object Qcopy_file; |
139 | Lisp_Object Qmake_directory; | |
140 | Lisp_Object Qdelete_directory; | |
141 | Lisp_Object Qdelete_file; | |
142 | Lisp_Object Qrename_file; | |
143 | Lisp_Object Qadd_name_to_file; | |
144 | Lisp_Object Qmake_symbolic_link; | |
145 | Lisp_Object Qfile_exists_p; | |
146 | Lisp_Object Qfile_executable_p; | |
147 | Lisp_Object Qfile_readable_p; | |
148 | Lisp_Object Qfile_symlink_p; | |
149 | Lisp_Object Qfile_writable_p; | |
150 | Lisp_Object Qfile_directory_p; | |
151 | Lisp_Object Qfile_accessible_directory_p; | |
152 | Lisp_Object Qfile_modes; | |
153 | Lisp_Object Qset_file_modes; | |
154 | Lisp_Object Qfile_newer_than_file_p; | |
155 | Lisp_Object Qinsert_file_contents; | |
156 | Lisp_Object Qwrite_region; | |
157 | Lisp_Object Qverify_visited_file_modtime; | |
158 | ||
642ef245 JB |
159 | DEFUN ("find-file-name-handler", Ffind_file_name_handler, Sfind_file_name_handler, 1, 1, 0, |
160 | "Return FILENAME's handler function, if its syntax is handled specially.\n\ | |
161 | Otherwise, return nil.\n\ | |
162 | A file name is handled if one of the regular expressions in\n\ | |
163 | `file-name-handler-alist' matches it.") | |
164 | (filename) | |
165 | Lisp_Object filename; | |
32f4334d | 166 | { |
642ef245 JB |
167 | /* This function must not munge the match data. */ |
168 | ||
32f4334d | 169 | Lisp_Object chain; |
3eac9910 | 170 | for (chain = Vfile_name_handler_alist; XTYPE (chain) == Lisp_Cons; |
32f4334d RS |
171 | chain = XCONS (chain)->cdr) |
172 | { | |
173 | Lisp_Object elt; | |
174 | elt = XCONS (chain)->car; | |
175 | if (XTYPE (elt) == Lisp_Cons) | |
176 | { | |
177 | Lisp_Object string; | |
178 | string = XCONS (elt)->car; | |
179 | if (XTYPE (string) == Lisp_String | |
09121adc | 180 | && fast_string_match (string, filename) >= 0) |
32f4334d RS |
181 | return XCONS (elt)->cdr; |
182 | } | |
642ef245 JB |
183 | |
184 | QUIT; | |
32f4334d RS |
185 | } |
186 | return Qnil; | |
187 | } | |
188 | \f | |
570d7624 JB |
189 | DEFUN ("file-name-directory", Ffile_name_directory, Sfile_name_directory, |
190 | 1, 1, 0, | |
191 | "Return the directory component in file name NAME.\n\ | |
192 | Return nil if NAME does not include a directory.\n\ | |
193 | Otherwise return a directory spec.\n\ | |
194 | Given a Unix syntax file name, returns a string ending in slash;\n\ | |
195 | on VMS, perhaps instead a string ending in `:', `]' or `>'.") | |
196 | (file) | |
197 | Lisp_Object file; | |
198 | { | |
199 | register unsigned char *beg; | |
200 | register unsigned char *p; | |
0bf2eed2 | 201 | Lisp_Object handler; |
570d7624 JB |
202 | |
203 | CHECK_STRING (file, 0); | |
204 | ||
0bf2eed2 RS |
205 | /* If the file name has special constructs in it, |
206 | call the corresponding file handler. */ | |
642ef245 | 207 | handler = Ffind_file_name_handler (file); |
0bf2eed2 RS |
208 | if (!NILP (handler)) |
209 | return call2 (handler, Qfile_name_directory, file); | |
210 | ||
570d7624 JB |
211 | beg = XSTRING (file)->data; |
212 | p = beg + XSTRING (file)->size; | |
213 | ||
214 | while (p != beg && p[-1] != '/' | |
215 | #ifdef VMS | |
216 | && p[-1] != ':' && p[-1] != ']' && p[-1] != '>' | |
217 | #endif /* VMS */ | |
218 | ) p--; | |
219 | ||
220 | if (p == beg) | |
221 | return Qnil; | |
222 | return make_string (beg, p - beg); | |
223 | } | |
224 | ||
225 | DEFUN ("file-name-nondirectory", Ffile_name_nondirectory, Sfile_name_nondirectory, | |
226 | 1, 1, 0, | |
227 | "Return file name NAME sans its directory.\n\ | |
228 | For example, in a Unix-syntax file name,\n\ | |
229 | this is everything after the last slash,\n\ | |
230 | or the entire name if it contains no slash.") | |
231 | (file) | |
232 | Lisp_Object file; | |
233 | { | |
234 | register unsigned char *beg, *p, *end; | |
0bf2eed2 | 235 | Lisp_Object handler; |
570d7624 JB |
236 | |
237 | CHECK_STRING (file, 0); | |
238 | ||
0bf2eed2 RS |
239 | /* If the file name has special constructs in it, |
240 | call the corresponding file handler. */ | |
642ef245 | 241 | handler = Ffind_file_name_handler (file); |
0bf2eed2 RS |
242 | if (!NILP (handler)) |
243 | return call2 (handler, Qfile_name_nondirectory, file); | |
244 | ||
570d7624 JB |
245 | beg = XSTRING (file)->data; |
246 | end = p = beg + XSTRING (file)->size; | |
247 | ||
248 | while (p != beg && p[-1] != '/' | |
249 | #ifdef VMS | |
250 | && p[-1] != ':' && p[-1] != ']' && p[-1] != '>' | |
251 | #endif /* VMS */ | |
252 | ) p--; | |
253 | ||
254 | return make_string (p, end - p); | |
255 | } | |
642ef245 JB |
256 | |
257 | DEFUN ("unhandled-file-name-directory", Funhandled_file_name_directory, Sunhandled_file_name_directory, 1, 1, 0, | |
258 | "Return a directly usable directory name somehow associated with FILENAME.\n\ | |
259 | A `directly usable' directory name is one that may be used without the\n\ | |
260 | intervention of any file handler.\n\ | |
261 | If FILENAME is a directly usable file itself, return\n\ | |
262 | (file-name-directory FILENAME).\n\ | |
263 | The `call-process' and `start-process' functions use this function to\n\ | |
264 | get a current directory to run processes in.") | |
265 | (filename) | |
266 | Lisp_Object filename; | |
267 | { | |
268 | Lisp_Object handler; | |
269 | ||
270 | /* If the file name has special constructs in it, | |
271 | call the corresponding file handler. */ | |
272 | handler = Ffind_file_name_handler (filename); | |
273 | if (!NILP (handler)) | |
274 | return call2 (handler, Qunhandled_file_name_directory, filename); | |
275 | ||
276 | return Ffile_name_directory (filename); | |
277 | } | |
278 | ||
570d7624 JB |
279 | \f |
280 | char * | |
281 | file_name_as_directory (out, in) | |
282 | char *out, *in; | |
283 | { | |
284 | int size = strlen (in) - 1; | |
285 | ||
286 | strcpy (out, in); | |
287 | ||
288 | #ifdef VMS | |
289 | /* Is it already a directory string? */ | |
290 | if (in[size] == ':' || in[size] == ']' || in[size] == '>') | |
291 | return out; | |
292 | /* Is it a VMS directory file name? If so, hack VMS syntax. */ | |
293 | else if (! index (in, '/') | |
294 | && ((size > 3 && ! strcmp (&in[size - 3], ".DIR")) | |
295 | || (size > 3 && ! strcmp (&in[size - 3], ".dir")) | |
296 | || (size > 5 && (! strncmp (&in[size - 5], ".DIR", 4) | |
297 | || ! strncmp (&in[size - 5], ".dir", 4)) | |
298 | && (in[size - 1] == '.' || in[size - 1] == ';') | |
299 | && in[size] == '1'))) | |
300 | { | |
301 | register char *p, *dot; | |
302 | char brack; | |
303 | ||
304 | /* x.dir -> [.x] | |
305 | dir:x.dir --> dir:[x] | |
306 | dir:[x]y.dir --> dir:[x.y] */ | |
307 | p = in + size; | |
308 | while (p != in && *p != ':' && *p != '>' && *p != ']') p--; | |
309 | if (p != in) | |
310 | { | |
311 | strncpy (out, in, p - in); | |
312 | out[p - in] = '\0'; | |
313 | if (*p == ':') | |
314 | { | |
315 | brack = ']'; | |
316 | strcat (out, ":["); | |
317 | } | |
318 | else | |
319 | { | |
320 | brack = *p; | |
321 | strcat (out, "."); | |
322 | } | |
323 | p++; | |
324 | } | |
325 | else | |
326 | { | |
327 | brack = ']'; | |
328 | strcpy (out, "[."); | |
329 | } | |
bfb61299 JB |
330 | dot = index (p, '.'); |
331 | if (dot) | |
570d7624 JB |
332 | { |
333 | /* blindly remove any extension */ | |
334 | size = strlen (out) + (dot - p); | |
335 | strncat (out, p, dot - p); | |
336 | } | |
337 | else | |
338 | { | |
339 | strcat (out, p); | |
340 | size = strlen (out); | |
341 | } | |
342 | out[size++] = brack; | |
343 | out[size] = '\0'; | |
344 | } | |
345 | #else /* not VMS */ | |
346 | /* For Unix syntax, Append a slash if necessary */ | |
347 | if (out[size] != '/') | |
348 | strcat (out, "/"); | |
349 | #endif /* not VMS */ | |
350 | return out; | |
351 | } | |
352 | ||
353 | DEFUN ("file-name-as-directory", Ffile_name_as_directory, | |
354 | Sfile_name_as_directory, 1, 1, 0, | |
355 | "Return a string representing file FILENAME interpreted as a directory.\n\ | |
356 | This operation exists because a directory is also a file, but its name as\n\ | |
357 | a directory is different from its name as a file.\n\ | |
358 | The result can be used as the value of `default-directory'\n\ | |
359 | or passed as second argument to `expand-file-name'.\n\ | |
360 | For a Unix-syntax file name, just appends a slash.\n\ | |
361 | On VMS, converts \"[X]FOO.DIR\" to \"[X.FOO]\", etc.") | |
362 | (file) | |
363 | Lisp_Object file; | |
364 | { | |
365 | char *buf; | |
0bf2eed2 | 366 | Lisp_Object handler; |
570d7624 JB |
367 | |
368 | CHECK_STRING (file, 0); | |
265a9e55 | 369 | if (NILP (file)) |
570d7624 | 370 | return Qnil; |
0bf2eed2 RS |
371 | |
372 | /* If the file name has special constructs in it, | |
373 | call the corresponding file handler. */ | |
642ef245 | 374 | handler = Ffind_file_name_handler (file); |
0bf2eed2 RS |
375 | if (!NILP (handler)) |
376 | return call2 (handler, Qfile_name_as_directory, file); | |
377 | ||
570d7624 JB |
378 | buf = (char *) alloca (XSTRING (file)->size + 10); |
379 | return build_string (file_name_as_directory (buf, XSTRING (file)->data)); | |
380 | } | |
381 | \f | |
382 | /* | |
383 | * Convert from directory name to filename. | |
384 | * On VMS: | |
385 | * xyzzy:[mukesh.emacs] => xyzzy:[mukesh]emacs.dir.1 | |
386 | * xyzzy:[mukesh] => xyzzy:[000000]mukesh.dir.1 | |
387 | * On UNIX, it's simple: just make sure there is a terminating / | |
388 | ||
389 | * Value is nonzero if the string output is different from the input. | |
390 | */ | |
391 | ||
392 | directory_file_name (src, dst) | |
393 | char *src, *dst; | |
394 | { | |
395 | long slen; | |
396 | #ifdef VMS | |
397 | long rlen; | |
398 | char * ptr, * rptr; | |
399 | char bracket; | |
400 | struct FAB fab = cc$rms_fab; | |
401 | struct NAM nam = cc$rms_nam; | |
402 | char esa[NAM$C_MAXRSS]; | |
403 | #endif /* VMS */ | |
404 | ||
405 | slen = strlen (src); | |
406 | #ifdef VMS | |
407 | if (! index (src, '/') | |
408 | && (src[slen - 1] == ']' | |
409 | || src[slen - 1] == ':' | |
410 | || src[slen - 1] == '>')) | |
411 | { | |
412 | /* VMS style - convert [x.y.z] to [x.y]z, [x] to [000000]x */ | |
413 | fab.fab$l_fna = src; | |
414 | fab.fab$b_fns = slen; | |
415 | fab.fab$l_nam = &nam; | |
416 | fab.fab$l_fop = FAB$M_NAM; | |
417 | ||
418 | nam.nam$l_esa = esa; | |
419 | nam.nam$b_ess = sizeof esa; | |
420 | nam.nam$b_nop |= NAM$M_SYNCHK; | |
421 | ||
422 | /* We call SYS$PARSE to handle such things as [--] for us. */ | |
423 | if (SYS$PARSE(&fab, 0, 0) == RMS$_NORMAL) | |
424 | { | |
425 | slen = nam.nam$b_esl; | |
426 | if (esa[slen - 1] == ';' && esa[slen - 2] == '.') | |
427 | slen -= 2; | |
428 | esa[slen] = '\0'; | |
429 | src = esa; | |
430 | } | |
431 | if (src[slen - 1] != ']' && src[slen - 1] != '>') | |
432 | { | |
433 | /* what about when we have logical_name:???? */ | |
434 | if (src[slen - 1] == ':') | |
435 | { /* Xlate logical name and see what we get */ | |
436 | ptr = strcpy (dst, src); /* upper case for getenv */ | |
437 | while (*ptr) | |
438 | { | |
439 | if ('a' <= *ptr && *ptr <= 'z') | |
440 | *ptr -= 040; | |
441 | ptr++; | |
442 | } | |
443 | dst[slen - 1] = 0; /* remove colon */ | |
444 | if (!(src = egetenv (dst))) | |
445 | return 0; | |
446 | /* should we jump to the beginning of this procedure? | |
447 | Good points: allows us to use logical names that xlate | |
448 | to Unix names, | |
449 | Bad points: can be a problem if we just translated to a device | |
450 | name... | |
451 | For now, I'll punt and always expect VMS names, and hope for | |
452 | the best! */ | |
453 | slen = strlen (src); | |
454 | if (src[slen - 1] != ']' && src[slen - 1] != '>') | |
455 | { /* no recursion here! */ | |
456 | strcpy (dst, src); | |
457 | return 0; | |
458 | } | |
459 | } | |
460 | else | |
461 | { /* not a directory spec */ | |
462 | strcpy (dst, src); | |
463 | return 0; | |
464 | } | |
465 | } | |
466 | bracket = src[slen - 1]; | |
467 | ||
468 | /* If bracket is ']' or '>', bracket - 2 is the corresponding | |
469 | opening bracket. */ | |
bfb61299 JB |
470 | ptr = index (src, bracket - 2); |
471 | if (ptr == 0) | |
570d7624 JB |
472 | { /* no opening bracket */ |
473 | strcpy (dst, src); | |
474 | return 0; | |
475 | } | |
476 | if (!(rptr = rindex (src, '.'))) | |
477 | rptr = ptr; | |
478 | slen = rptr - src; | |
479 | strncpy (dst, src, slen); | |
480 | dst[slen] = '\0'; | |
481 | if (*rptr == '.') | |
482 | { | |
483 | dst[slen++] = bracket; | |
484 | dst[slen] = '\0'; | |
485 | } | |
486 | else | |
487 | { | |
488 | /* If we have the top-level of a rooted directory (i.e. xx:[000000]), | |
489 | then translate the device and recurse. */ | |
490 | if (dst[slen - 1] == ':' | |
491 | && dst[slen - 2] != ':' /* skip decnet nodes */ | |
492 | && strcmp(src + slen, "[000000]") == 0) | |
493 | { | |
494 | dst[slen - 1] = '\0'; | |
495 | if ((ptr = egetenv (dst)) | |
496 | && (rlen = strlen (ptr) - 1) > 0 | |
497 | && (ptr[rlen] == ']' || ptr[rlen] == '>') | |
498 | && ptr[rlen - 1] == '.') | |
499 | { | |
72b21817 RS |
500 | char * buf = (char *) alloca (strlen (ptr) + 1); |
501 | strcpy (buf, ptr); | |
502 | buf[rlen - 1] = ']'; | |
503 | buf[rlen] = '\0'; | |
504 | return directory_file_name (buf, dst); | |
570d7624 JB |
505 | } |
506 | else | |
507 | dst[slen - 1] = ':'; | |
508 | } | |
509 | strcat (dst, "[000000]"); | |
510 | slen += 8; | |
511 | } | |
512 | rptr++; | |
513 | rlen = strlen (rptr) - 1; | |
514 | strncat (dst, rptr, rlen); | |
515 | dst[slen + rlen] = '\0'; | |
516 | strcat (dst, ".DIR.1"); | |
517 | return 1; | |
518 | } | |
519 | #endif /* VMS */ | |
520 | /* Process as Unix format: just remove any final slash. | |
521 | But leave "/" unchanged; do not change it to "". */ | |
522 | strcpy (dst, src); | |
4746118a | 523 | if (slen > 1 && dst[slen - 1] == '/') |
570d7624 JB |
524 | dst[slen - 1] = 0; |
525 | return 1; | |
526 | } | |
527 | ||
528 | DEFUN ("directory-file-name", Fdirectory_file_name, Sdirectory_file_name, | |
529 | 1, 1, 0, | |
530 | "Returns the file name of the directory named DIR.\n\ | |
531 | This is the name of the file that holds the data for the directory DIR.\n\ | |
532 | This operation exists because a directory is also a file, but its name as\n\ | |
533 | a directory is different from its name as a file.\n\ | |
534 | In Unix-syntax, this function just removes the final slash.\n\ | |
535 | On VMS, given a VMS-syntax directory name such as \"[X.Y]\",\n\ | |
536 | it returns a file name such as \"[X]Y.DIR.1\".") | |
537 | (directory) | |
538 | Lisp_Object directory; | |
539 | { | |
540 | char *buf; | |
0bf2eed2 | 541 | Lisp_Object handler; |
570d7624 JB |
542 | |
543 | CHECK_STRING (directory, 0); | |
544 | ||
265a9e55 | 545 | if (NILP (directory)) |
570d7624 | 546 | return Qnil; |
0bf2eed2 RS |
547 | |
548 | /* If the file name has special constructs in it, | |
549 | call the corresponding file handler. */ | |
642ef245 | 550 | handler = Ffind_file_name_handler (directory); |
0bf2eed2 RS |
551 | if (!NILP (handler)) |
552 | return call2 (handler, Qdirectory_file_name, directory); | |
553 | ||
570d7624 JB |
554 | #ifdef VMS |
555 | /* 20 extra chars is insufficient for VMS, since we might perform a | |
556 | logical name translation. an equivalence string can be up to 255 | |
557 | chars long, so grab that much extra space... - sss */ | |
558 | buf = (char *) alloca (XSTRING (directory)->size + 20 + 255); | |
559 | #else | |
560 | buf = (char *) alloca (XSTRING (directory)->size + 20); | |
561 | #endif | |
562 | directory_file_name (XSTRING (directory)->data, buf); | |
563 | return build_string (buf); | |
564 | } | |
565 | ||
566 | DEFUN ("make-temp-name", Fmake_temp_name, Smake_temp_name, 1, 1, 0, | |
567 | "Generate temporary file name (string) starting with PREFIX (a string).\n\ | |
568 | The Emacs process number forms part of the result,\n\ | |
569 | so there is no danger of generating a name being used by another process.") | |
570 | (prefix) | |
571 | Lisp_Object prefix; | |
572 | { | |
573 | Lisp_Object val; | |
574 | val = concat2 (prefix, build_string ("XXXXXX")); | |
575 | mktemp (XSTRING (val)->data); | |
576 | return val; | |
577 | } | |
578 | \f | |
579 | DEFUN ("expand-file-name", Fexpand_file_name, Sexpand_file_name, 1, 2, 0, | |
580 | "Convert FILENAME to absolute, and canonicalize it.\n\ | |
581 | Second arg DEFAULT is directory to start with if FILENAME is relative\n\ | |
582 | (does not start with slash); if DEFAULT is nil or missing,\n\ | |
583 | the current buffer's value of default-directory is used.\n\ | |
b72dea2a JB |
584 | Path components that are `.' are removed, and \n\ |
585 | path components followed by `..' are removed, along with the `..' itself;\n\ | |
586 | note that these simplifications are done without checking the resulting\n\ | |
587 | paths in the file system.\n\ | |
588 | An initial `~/' expands to your home directory.\n\ | |
589 | An initial `~USER/' expands to USER's home directory.\n\ | |
570d7624 JB |
590 | See also the function `substitute-in-file-name'.") |
591 | (name, defalt) | |
592 | Lisp_Object name, defalt; | |
593 | { | |
594 | unsigned char *nm; | |
595 | ||
596 | register unsigned char *newdir, *p, *o; | |
597 | int tlen; | |
598 | unsigned char *target; | |
599 | struct passwd *pw; | |
600 | int lose; | |
601 | #ifdef VMS | |
602 | unsigned char * colon = 0; | |
603 | unsigned char * close = 0; | |
604 | unsigned char * slash = 0; | |
605 | unsigned char * brack = 0; | |
606 | int lbrack = 0, rbrack = 0; | |
607 | int dots = 0; | |
608 | #endif /* VMS */ | |
0bf2eed2 | 609 | Lisp_Object handler; |
570d7624 JB |
610 | |
611 | CHECK_STRING (name, 0); | |
612 | ||
0bf2eed2 RS |
613 | /* If the file name has special constructs in it, |
614 | call the corresponding file handler. */ | |
642ef245 | 615 | handler = Ffind_file_name_handler (name); |
0bf2eed2 | 616 | if (!NILP (handler)) |
09121adc | 617 | return call3 (handler, Qexpand_file_name, name, defalt); |
0bf2eed2 | 618 | |
570d7624 JB |
619 | #ifdef VMS |
620 | /* Filenames on VMS are always upper case. */ | |
621 | name = Fupcase (name); | |
622 | #endif | |
623 | ||
624 | nm = XSTRING (name)->data; | |
625 | ||
626 | /* If nm is absolute, flush ...// and detect /./ and /../. | |
627 | If no /./ or /../ we can return right away. */ | |
628 | if ( | |
629 | nm[0] == '/' | |
630 | #ifdef VMS | |
631 | || index (nm, ':') | |
632 | #endif /* VMS */ | |
633 | ) | |
634 | { | |
635 | p = nm; | |
636 | lose = 0; | |
637 | while (*p) | |
638 | { | |
c77d647e JB |
639 | /* Since we know the path is absolute, we can assume that each |
640 | element starts with a "/". */ | |
641 | ||
642 | /* "//" anywhere isn't necessarily hairy; we just start afresh | |
643 | with the second slash. */ | |
570d7624 JB |
644 | if (p[0] == '/' && p[1] == '/' |
645 | #ifdef APOLLO | |
646 | /* // at start of filename is meaningful on Apollo system */ | |
647 | && nm != p | |
648 | #endif /* APOLLO */ | |
649 | ) | |
650 | nm = p + 1; | |
c77d647e JB |
651 | |
652 | /* "~" is hairy as the start of any path element. */ | |
570d7624 JB |
653 | if (p[0] == '/' && p[1] == '~') |
654 | nm = p + 1, lose = 1; | |
c77d647e JB |
655 | |
656 | /* "." and ".." are hairy. */ | |
657 | if (p[0] == '/' | |
658 | && p[1] == '.' | |
659 | && (p[2] == '/' | |
660 | || p[2] == 0 | |
661 | || (p[2] == '.' && (p[3] == '/' | |
662 | || p[3] == 0)))) | |
570d7624 JB |
663 | lose = 1; |
664 | #ifdef VMS | |
665 | if (p[0] == '\\') | |
666 | lose = 1; | |
667 | if (p[0] == '/') { | |
668 | /* if dev:[dir]/, move nm to / */ | |
669 | if (!slash && p > nm && (brack || colon)) { | |
670 | nm = (brack ? brack + 1 : colon + 1); | |
671 | lbrack = rbrack = 0; | |
672 | brack = 0; | |
673 | colon = 0; | |
674 | } | |
675 | slash = p; | |
676 | } | |
677 | if (p[0] == '-') | |
678 | #ifndef VMS4_4 | |
679 | /* VMS pre V4.4,convert '-'s in filenames. */ | |
680 | if (lbrack == rbrack) | |
681 | { | |
682 | if (dots < 2) /* this is to allow negative version numbers */ | |
683 | p[0] = '_'; | |
684 | } | |
685 | else | |
686 | #endif /* VMS4_4 */ | |
687 | if (lbrack > rbrack && | |
688 | ((p[-1] == '.' || p[-1] == '[' || p[-1] == '<') && | |
689 | (p[1] == '.' || p[1] == ']' || p[1] == '>'))) | |
690 | lose = 1; | |
691 | #ifndef VMS4_4 | |
692 | else | |
693 | p[0] = '_'; | |
694 | #endif /* VMS4_4 */ | |
695 | /* count open brackets, reset close bracket pointer */ | |
696 | if (p[0] == '[' || p[0] == '<') | |
697 | lbrack++, brack = 0; | |
698 | /* count close brackets, set close bracket pointer */ | |
699 | if (p[0] == ']' || p[0] == '>') | |
700 | rbrack++, brack = p; | |
701 | /* detect ][ or >< */ | |
702 | if ((p[0] == ']' || p[0] == '>') && (p[1] == '[' || p[1] == '<')) | |
703 | lose = 1; | |
704 | if ((p[0] == ':' || p[0] == ']' || p[0] == '>') && p[1] == '~') | |
705 | nm = p + 1, lose = 1; | |
706 | if (p[0] == ':' && (colon || slash)) | |
707 | /* if dev1:[dir]dev2:, move nm to dev2: */ | |
708 | if (brack) | |
709 | { | |
710 | nm = brack + 1; | |
711 | brack = 0; | |
712 | } | |
713 | /* if /pathname/dev:, move nm to dev: */ | |
714 | else if (slash) | |
715 | nm = slash + 1; | |
716 | /* if node::dev:, move colon following dev */ | |
717 | else if (colon && colon[-1] == ':') | |
718 | colon = p; | |
719 | /* if dev1:dev2:, move nm to dev2: */ | |
720 | else if (colon && colon[-1] != ':') | |
721 | { | |
722 | nm = colon + 1; | |
723 | colon = 0; | |
724 | } | |
725 | if (p[0] == ':' && !colon) | |
726 | { | |
727 | if (p[1] == ':') | |
728 | p++; | |
729 | colon = p; | |
730 | } | |
731 | if (lbrack == rbrack) | |
732 | if (p[0] == ';') | |
733 | dots = 2; | |
734 | else if (p[0] == '.') | |
735 | dots++; | |
736 | #endif /* VMS */ | |
737 | p++; | |
738 | } | |
739 | if (!lose) | |
740 | { | |
741 | #ifdef VMS | |
742 | if (index (nm, '/')) | |
743 | return build_string (sys_translate_unix (nm)); | |
744 | #endif /* VMS */ | |
745 | if (nm == XSTRING (name)->data) | |
746 | return name; | |
747 | return build_string (nm); | |
748 | } | |
749 | } | |
750 | ||
751 | /* Now determine directory to start with and put it in newdir */ | |
752 | ||
753 | newdir = 0; | |
754 | ||
755 | if (nm[0] == '~') /* prefix ~ */ | |
c77d647e JB |
756 | { |
757 | if (nm[1] == '/' | |
570d7624 | 758 | #ifdef VMS |
c77d647e JB |
759 | || nm[1] == ':' |
760 | #endif /* VMS */ | |
761 | || nm[1] == 0) /* ~ by itself */ | |
762 | { | |
763 | if (!(newdir = (unsigned char *) egetenv ("HOME"))) | |
764 | newdir = (unsigned char *) ""; | |
765 | nm++; | |
570d7624 | 766 | #ifdef VMS |
c77d647e JB |
767 | nm++; /* Don't leave the slash in nm. */ |
768 | #endif /* VMS */ | |
769 | } | |
770 | else /* ~user/filename */ | |
771 | { | |
772 | for (p = nm; *p && (*p != '/' | |
570d7624 | 773 | #ifdef VMS |
c77d647e JB |
774 | && *p != ':' |
775 | #endif /* VMS */ | |
776 | ); p++); | |
777 | o = (unsigned char *) alloca (p - nm + 1); | |
778 | bcopy ((char *) nm, o, p - nm); | |
779 | o [p - nm] = 0; | |
780 | ||
781 | pw = (struct passwd *) getpwnam (o + 1); | |
782 | if (pw) | |
783 | { | |
784 | newdir = (unsigned char *) pw -> pw_dir; | |
570d7624 | 785 | #ifdef VMS |
c77d647e | 786 | nm = p + 1; /* skip the terminator */ |
570d7624 | 787 | #else |
c77d647e JB |
788 | nm = p; |
789 | #endif /* VMS */ | |
790 | } | |
e5d77022 | 791 | |
c77d647e JB |
792 | /* If we don't find a user of that name, leave the name |
793 | unchanged; don't move nm forward to p. */ | |
794 | } | |
795 | } | |
570d7624 JB |
796 | |
797 | if (nm[0] != '/' | |
798 | #ifdef VMS | |
799 | && !index (nm, ':') | |
800 | #endif /* not VMS */ | |
801 | && !newdir) | |
802 | { | |
265a9e55 | 803 | if (NILP (defalt)) |
570d7624 JB |
804 | defalt = current_buffer->directory; |
805 | CHECK_STRING (defalt, 1); | |
806 | newdir = XSTRING (defalt)->data; | |
807 | } | |
808 | ||
bfb61299 JB |
809 | if (newdir != 0) |
810 | { | |
811 | /* Get rid of any slash at the end of newdir. */ | |
812 | int length = strlen (newdir); | |
813 | if (newdir[length - 1] == '/') | |
814 | { | |
815 | unsigned char *temp = (unsigned char *) alloca (length); | |
816 | bcopy (newdir, temp, length - 1); | |
817 | temp[length - 1] = 0; | |
818 | newdir = temp; | |
819 | } | |
820 | tlen = length + 1; | |
821 | } | |
822 | else | |
823 | tlen = 0; | |
570d7624 | 824 | |
bfb61299 JB |
825 | /* Now concatenate the directory and name to new space in the stack frame */ |
826 | tlen += strlen (nm) + 1; | |
570d7624 JB |
827 | target = (unsigned char *) alloca (tlen); |
828 | *target = 0; | |
829 | ||
830 | if (newdir) | |
831 | { | |
832 | #ifndef VMS | |
833 | if (nm[0] == 0 || nm[0] == '/') | |
834 | strcpy (target, newdir); | |
835 | else | |
836 | #endif | |
c77d647e | 837 | file_name_as_directory (target, newdir); |
570d7624 JB |
838 | } |
839 | ||
840 | strcat (target, nm); | |
841 | #ifdef VMS | |
842 | if (index (target, '/')) | |
843 | strcpy (target, sys_translate_unix (target)); | |
844 | #endif /* VMS */ | |
845 | ||
c77d647e | 846 | /* Now canonicalize by removing /. and /foo/.. if they appear. */ |
570d7624 JB |
847 | |
848 | p = target; | |
849 | o = target; | |
850 | ||
851 | while (*p) | |
852 | { | |
853 | #ifdef VMS | |
854 | if (*p != ']' && *p != '>' && *p != '-') | |
855 | { | |
856 | if (*p == '\\') | |
857 | p++; | |
858 | *o++ = *p++; | |
859 | } | |
860 | else if ((p[0] == ']' || p[0] == '>') && p[0] == p[1] + 2) | |
861 | /* brackets are offset from each other by 2 */ | |
862 | { | |
863 | p += 2; | |
864 | if (*p != '.' && *p != '-' && o[-1] != '.') | |
865 | /* convert [foo][bar] to [bar] */ | |
866 | while (o[-1] != '[' && o[-1] != '<') | |
867 | o--; | |
868 | else if (*p == '-' && *o != '.') | |
869 | *--p = '.'; | |
870 | } | |
871 | else if (p[0] == '-' && o[-1] == '.' && | |
872 | (p[1] == '.' || p[1] == ']' || p[1] == '>')) | |
873 | /* flush .foo.- ; leave - if stopped by '[' or '<' */ | |
874 | { | |
875 | do | |
876 | o--; | |
877 | while (o[-1] != '.' && o[-1] != '[' && o[-1] != '<'); | |
878 | if (p[1] == '.') /* foo.-.bar ==> bar*/ | |
879 | p += 2; | |
880 | else if (o[-1] == '.') /* '.foo.-]' ==> ']' */ | |
881 | p++, o--; | |
882 | /* else [foo.-] ==> [-] */ | |
883 | } | |
884 | else | |
885 | { | |
886 | #ifndef VMS4_4 | |
887 | if (*p == '-' && | |
888 | o[-1] != '[' && o[-1] != '<' && o[-1] != '.' && | |
889 | p[1] != ']' && p[1] != '>' && p[1] != '.') | |
890 | *p = '_'; | |
891 | #endif /* VMS4_4 */ | |
892 | *o++ = *p++; | |
893 | } | |
894 | #else /* not VMS */ | |
895 | if (*p != '/') | |
896 | { | |
897 | *o++ = *p++; | |
898 | } | |
899 | else if (!strncmp (p, "//", 2) | |
900 | #ifdef APOLLO | |
901 | /* // at start of filename is meaningful in Apollo system */ | |
902 | && o != target | |
903 | #endif /* APOLLO */ | |
904 | ) | |
905 | { | |
906 | o = target; | |
907 | p++; | |
908 | } | |
c77d647e JB |
909 | else if (p[0] == '/' |
910 | && p[1] == '.' | |
911 | && (p[2] == '/' | |
912 | || p[2] == 0)) | |
913 | { | |
914 | /* If "/." is the entire filename, keep the "/". Otherwise, | |
915 | just delete the whole "/.". */ | |
916 | if (o == target && p[2] == '\0') | |
917 | *o++ = *p; | |
918 | p += 2; | |
919 | } | |
570d7624 JB |
920 | else if (!strncmp (p, "/..", 3) |
921 | /* `/../' is the "superroot" on certain file systems. */ | |
922 | && o != target | |
923 | && (p[3] == '/' || p[3] == 0)) | |
924 | { | |
925 | while (o != target && *--o != '/') | |
926 | ; | |
927 | #ifdef APOLLO | |
928 | if (o == target + 1 && o[-1] == '/' && o[0] == '/') | |
929 | ++o; | |
930 | else | |
931 | #endif /* APOLLO */ | |
932 | if (o == target && *o == '/') | |
933 | ++o; | |
934 | p += 3; | |
935 | } | |
936 | else | |
937 | { | |
938 | *o++ = *p++; | |
939 | } | |
940 | #endif /* not VMS */ | |
941 | } | |
942 | ||
943 | return make_string (target, o - target); | |
944 | } | |
945 | #if 0 | |
e5d77022 JB |
946 | /* Changed this DEFUN to a DEAFUN, so as not to confuse `make-docfile'. |
947 | DEAFUN ("expand-file-name", Fexpand_file_name, Sexpand_file_name, 1, 2, 0, | |
570d7624 JB |
948 | "Convert FILENAME to absolute, and canonicalize it.\n\ |
949 | Second arg DEFAULT is directory to start with if FILENAME is relative\n\ | |
950 | (does not start with slash); if DEFAULT is nil or missing,\n\ | |
951 | the current buffer's value of default-directory is used.\n\ | |
952 | Filenames containing `.' or `..' as components are simplified;\n\ | |
953 | initial `~/' expands to your home directory.\n\ | |
954 | See also the function `substitute-in-file-name'.") | |
955 | (name, defalt) | |
956 | Lisp_Object name, defalt; | |
957 | { | |
958 | unsigned char *nm; | |
959 | ||
960 | register unsigned char *newdir, *p, *o; | |
961 | int tlen; | |
962 | unsigned char *target; | |
963 | struct passwd *pw; | |
964 | int lose; | |
965 | #ifdef VMS | |
966 | unsigned char * colon = 0; | |
967 | unsigned char * close = 0; | |
968 | unsigned char * slash = 0; | |
969 | unsigned char * brack = 0; | |
970 | int lbrack = 0, rbrack = 0; | |
971 | int dots = 0; | |
972 | #endif /* VMS */ | |
973 | ||
974 | CHECK_STRING (name, 0); | |
975 | ||
976 | #ifdef VMS | |
977 | /* Filenames on VMS are always upper case. */ | |
978 | name = Fupcase (name); | |
979 | #endif | |
980 | ||
981 | nm = XSTRING (name)->data; | |
982 | ||
983 | /* If nm is absolute, flush ...// and detect /./ and /../. | |
984 | If no /./ or /../ we can return right away. */ | |
985 | if ( | |
986 | nm[0] == '/' | |
987 | #ifdef VMS | |
988 | || index (nm, ':') | |
989 | #endif /* VMS */ | |
990 | ) | |
991 | { | |
992 | p = nm; | |
993 | lose = 0; | |
994 | while (*p) | |
995 | { | |
996 | if (p[0] == '/' && p[1] == '/' | |
997 | #ifdef APOLLO | |
998 | /* // at start of filename is meaningful on Apollo system */ | |
999 | && nm != p | |
1000 | #endif /* APOLLO */ | |
1001 | ) | |
1002 | nm = p + 1; | |
1003 | if (p[0] == '/' && p[1] == '~') | |
1004 | nm = p + 1, lose = 1; | |
1005 | if (p[0] == '/' && p[1] == '.' | |
1006 | && (p[2] == '/' || p[2] == 0 | |
1007 | || (p[2] == '.' && (p[3] == '/' || p[3] == 0)))) | |
1008 | lose = 1; | |
1009 | #ifdef VMS | |
1010 | if (p[0] == '\\') | |
1011 | lose = 1; | |
1012 | if (p[0] == '/') { | |
1013 | /* if dev:[dir]/, move nm to / */ | |
1014 | if (!slash && p > nm && (brack || colon)) { | |
1015 | nm = (brack ? brack + 1 : colon + 1); | |
1016 | lbrack = rbrack = 0; | |
1017 | brack = 0; | |
1018 | colon = 0; | |
1019 | } | |
1020 | slash = p; | |
1021 | } | |
1022 | if (p[0] == '-') | |
1023 | #ifndef VMS4_4 | |
1024 | /* VMS pre V4.4,convert '-'s in filenames. */ | |
1025 | if (lbrack == rbrack) | |
1026 | { | |
1027 | if (dots < 2) /* this is to allow negative version numbers */ | |
1028 | p[0] = '_'; | |
1029 | } | |
1030 | else | |
1031 | #endif /* VMS4_4 */ | |
1032 | if (lbrack > rbrack && | |
1033 | ((p[-1] == '.' || p[-1] == '[' || p[-1] == '<') && | |
1034 | (p[1] == '.' || p[1] == ']' || p[1] == '>'))) | |
1035 | lose = 1; | |
1036 | #ifndef VMS4_4 | |
1037 | else | |
1038 | p[0] = '_'; | |
1039 | #endif /* VMS4_4 */ | |
1040 | /* count open brackets, reset close bracket pointer */ | |
1041 | if (p[0] == '[' || p[0] == '<') | |
1042 | lbrack++, brack = 0; | |
1043 | /* count close brackets, set close bracket pointer */ | |
1044 | if (p[0] == ']' || p[0] == '>') | |
1045 | rbrack++, brack = p; | |
1046 | /* detect ][ or >< */ | |
1047 | if ((p[0] == ']' || p[0] == '>') && (p[1] == '[' || p[1] == '<')) | |
1048 | lose = 1; | |
1049 | if ((p[0] == ':' || p[0] == ']' || p[0] == '>') && p[1] == '~') | |
1050 | nm = p + 1, lose = 1; | |
1051 | if (p[0] == ':' && (colon || slash)) | |
1052 | /* if dev1:[dir]dev2:, move nm to dev2: */ | |
1053 | if (brack) | |
1054 | { | |
1055 | nm = brack + 1; | |
1056 | brack = 0; | |
1057 | } | |
1058 | /* if /pathname/dev:, move nm to dev: */ | |
1059 | else if (slash) | |
1060 | nm = slash + 1; | |
1061 | /* if node::dev:, move colon following dev */ | |
1062 | else if (colon && colon[-1] == ':') | |
1063 | colon = p; | |
1064 | /* if dev1:dev2:, move nm to dev2: */ | |
1065 | else if (colon && colon[-1] != ':') | |
1066 | { | |
1067 | nm = colon + 1; | |
1068 | colon = 0; | |
1069 | } | |
1070 | if (p[0] == ':' && !colon) | |
1071 | { | |
1072 | if (p[1] == ':') | |
1073 | p++; | |
1074 | colon = p; | |
1075 | } | |
1076 | if (lbrack == rbrack) | |
1077 | if (p[0] == ';') | |
1078 | dots = 2; | |
1079 | else if (p[0] == '.') | |
1080 | dots++; | |
1081 | #endif /* VMS */ | |
1082 | p++; | |
1083 | } | |
1084 | if (!lose) | |
1085 | { | |
1086 | #ifdef VMS | |
1087 | if (index (nm, '/')) | |
1088 | return build_string (sys_translate_unix (nm)); | |
1089 | #endif /* VMS */ | |
1090 | if (nm == XSTRING (name)->data) | |
1091 | return name; | |
1092 | return build_string (nm); | |
1093 | } | |
1094 | } | |
1095 | ||
1096 | /* Now determine directory to start with and put it in NEWDIR */ | |
1097 | ||
1098 | newdir = 0; | |
1099 | ||
1100 | if (nm[0] == '~') /* prefix ~ */ | |
1101 | if (nm[1] == '/' | |
1102 | #ifdef VMS | |
1103 | || nm[1] == ':' | |
1104 | #endif /* VMS */ | |
1105 | || nm[1] == 0)/* ~/filename */ | |
1106 | { | |
1107 | if (!(newdir = (unsigned char *) egetenv ("HOME"))) | |
1108 | newdir = (unsigned char *) ""; | |
1109 | nm++; | |
1110 | #ifdef VMS | |
1111 | nm++; /* Don't leave the slash in nm. */ | |
1112 | #endif /* VMS */ | |
1113 | } | |
1114 | else /* ~user/filename */ | |
1115 | { | |
1116 | /* Get past ~ to user */ | |
1117 | unsigned char *user = nm + 1; | |
1118 | /* Find end of name. */ | |
1119 | unsigned char *ptr = (unsigned char *) index (user, '/'); | |
1120 | int len = ptr ? ptr - user : strlen (user); | |
1121 | #ifdef VMS | |
1122 | unsigned char *ptr1 = index (user, ':'); | |
1123 | if (ptr1 != 0 && ptr1 - user < len) | |
1124 | len = ptr1 - user; | |
1125 | #endif /* VMS */ | |
1126 | /* Copy the user name into temp storage. */ | |
1127 | o = (unsigned char *) alloca (len + 1); | |
1128 | bcopy ((char *) user, o, len); | |
1129 | o[len] = 0; | |
1130 | ||
1131 | /* Look up the user name. */ | |
1132 | pw = (struct passwd *) getpwnam (o + 1); | |
1133 | if (!pw) | |
1134 | error ("\"%s\" isn't a registered user", o + 1); | |
1135 | ||
1136 | newdir = (unsigned char *) pw->pw_dir; | |
1137 | ||
1138 | /* Discard the user name from NM. */ | |
1139 | nm += len; | |
1140 | } | |
1141 | ||
1142 | if (nm[0] != '/' | |
1143 | #ifdef VMS | |
1144 | && !index (nm, ':') | |
1145 | #endif /* not VMS */ | |
1146 | && !newdir) | |
1147 | { | |
265a9e55 | 1148 | if (NILP (defalt)) |
570d7624 JB |
1149 | defalt = current_buffer->directory; |
1150 | CHECK_STRING (defalt, 1); | |
1151 | newdir = XSTRING (defalt)->data; | |
1152 | } | |
1153 | ||
1154 | /* Now concatenate the directory and name to new space in the stack frame */ | |
1155 | ||
1156 | tlen = (newdir ? strlen (newdir) + 1 : 0) + strlen (nm) + 1; | |
1157 | target = (unsigned char *) alloca (tlen); | |
1158 | *target = 0; | |
1159 | ||
1160 | if (newdir) | |
1161 | { | |
1162 | #ifndef VMS | |
1163 | if (nm[0] == 0 || nm[0] == '/') | |
1164 | strcpy (target, newdir); | |
1165 | else | |
1166 | #endif | |
1167 | file_name_as_directory (target, newdir); | |
1168 | } | |
1169 | ||
1170 | strcat (target, nm); | |
1171 | #ifdef VMS | |
1172 | if (index (target, '/')) | |
1173 | strcpy (target, sys_translate_unix (target)); | |
1174 | #endif /* VMS */ | |
1175 | ||
1176 | /* Now canonicalize by removing /. and /foo/.. if they appear */ | |
1177 | ||
1178 | p = target; | |
1179 | o = target; | |
1180 | ||
1181 | while (*p) | |
1182 | { | |
1183 | #ifdef VMS | |
1184 | if (*p != ']' && *p != '>' && *p != '-') | |
1185 | { | |
1186 | if (*p == '\\') | |
1187 | p++; | |
1188 | *o++ = *p++; | |
1189 | } | |
1190 | else if ((p[0] == ']' || p[0] == '>') && p[0] == p[1] + 2) | |
1191 | /* brackets are offset from each other by 2 */ | |
1192 | { | |
1193 | p += 2; | |
1194 | if (*p != '.' && *p != '-' && o[-1] != '.') | |
1195 | /* convert [foo][bar] to [bar] */ | |
1196 | while (o[-1] != '[' && o[-1] != '<') | |
1197 | o--; | |
1198 | else if (*p == '-' && *o != '.') | |
1199 | *--p = '.'; | |
1200 | } | |
1201 | else if (p[0] == '-' && o[-1] == '.' && | |
1202 | (p[1] == '.' || p[1] == ']' || p[1] == '>')) | |
1203 | /* flush .foo.- ; leave - if stopped by '[' or '<' */ | |
1204 | { | |
1205 | do | |
1206 | o--; | |
1207 | while (o[-1] != '.' && o[-1] != '[' && o[-1] != '<'); | |
1208 | if (p[1] == '.') /* foo.-.bar ==> bar*/ | |
1209 | p += 2; | |
1210 | else if (o[-1] == '.') /* '.foo.-]' ==> ']' */ | |
1211 | p++, o--; | |
1212 | /* else [foo.-] ==> [-] */ | |
1213 | } | |
1214 | else | |
1215 | { | |
1216 | #ifndef VMS4_4 | |
1217 | if (*p == '-' && | |
1218 | o[-1] != '[' && o[-1] != '<' && o[-1] != '.' && | |
1219 | p[1] != ']' && p[1] != '>' && p[1] != '.') | |
1220 | *p = '_'; | |
1221 | #endif /* VMS4_4 */ | |
1222 | *o++ = *p++; | |
1223 | } | |
1224 | #else /* not VMS */ | |
1225 | if (*p != '/') | |
1226 | { | |
1227 | *o++ = *p++; | |
1228 | } | |
1229 | else if (!strncmp (p, "//", 2) | |
1230 | #ifdef APOLLO | |
1231 | /* // at start of filename is meaningful in Apollo system */ | |
1232 | && o != target | |
1233 | #endif /* APOLLO */ | |
1234 | ) | |
1235 | { | |
1236 | o = target; | |
1237 | p++; | |
1238 | } | |
1239 | else if (p[0] == '/' && p[1] == '.' && | |
1240 | (p[2] == '/' || p[2] == 0)) | |
1241 | p += 2; | |
1242 | else if (!strncmp (p, "/..", 3) | |
1243 | /* `/../' is the "superroot" on certain file systems. */ | |
1244 | && o != target | |
1245 | && (p[3] == '/' || p[3] == 0)) | |
1246 | { | |
1247 | while (o != target && *--o != '/') | |
1248 | ; | |
1249 | #ifdef APOLLO | |
1250 | if (o == target + 1 && o[-1] == '/' && o[0] == '/') | |
1251 | ++o; | |
1252 | else | |
1253 | #endif /* APOLLO */ | |
1254 | if (o == target && *o == '/') | |
1255 | ++o; | |
1256 | p += 3; | |
1257 | } | |
1258 | else | |
1259 | { | |
1260 | *o++ = *p++; | |
1261 | } | |
1262 | #endif /* not VMS */ | |
1263 | } | |
1264 | ||
1265 | return make_string (target, o - target); | |
1266 | } | |
1267 | #endif | |
1268 | \f | |
1269 | DEFUN ("substitute-in-file-name", Fsubstitute_in_file_name, | |
1270 | Ssubstitute_in_file_name, 1, 1, 0, | |
1271 | "Substitute environment variables referred to in FILENAME.\n\ | |
1272 | `$FOO' where FOO is an environment variable name means to substitute\n\ | |
1273 | the value of that variable. The variable name should be terminated\n\ | |
1274 | with a character not a letter, digit or underscore; otherwise, enclose\n\ | |
1275 | the entire variable name in braces.\n\ | |
1276 | If `/~' appears, all of FILENAME through that `/' is discarded.\n\n\ | |
1277 | On VMS, `$' substitution is not done; this function does little and only\n\ | |
1278 | duplicates what `expand-file-name' does.") | |
1279 | (string) | |
1280 | Lisp_Object string; | |
1281 | { | |
1282 | unsigned char *nm; | |
1283 | ||
1284 | register unsigned char *s, *p, *o, *x, *endp; | |
1285 | unsigned char *target; | |
1286 | int total = 0; | |
1287 | int substituted = 0; | |
1288 | unsigned char *xnm; | |
1289 | ||
1290 | CHECK_STRING (string, 0); | |
1291 | ||
1292 | nm = XSTRING (string)->data; | |
1293 | endp = nm + XSTRING (string)->size; | |
1294 | ||
1295 | /* If /~ or // appears, discard everything through first slash. */ | |
1296 | ||
1297 | for (p = nm; p != endp; p++) | |
1298 | { | |
1299 | if ((p[0] == '~' || | |
1300 | #ifdef APOLLO | |
1301 | /* // at start of file name is meaningful in Apollo system */ | |
1302 | (p[0] == '/' && p - 1 != nm) | |
1303 | #else /* not APOLLO */ | |
1304 | p[0] == '/' | |
1305 | #endif /* not APOLLO */ | |
1306 | ) | |
1307 | && p != nm && | |
1308 | #ifdef VMS | |
1309 | (p[-1] == ':' || p[-1] == ']' || p[-1] == '>' || | |
1310 | #endif /* VMS */ | |
1311 | p[-1] == '/') | |
1312 | #ifdef VMS | |
1313 | ) | |
1314 | #endif /* VMS */ | |
1315 | { | |
1316 | nm = p; | |
1317 | substituted = 1; | |
1318 | } | |
1319 | } | |
1320 | ||
1321 | #ifdef VMS | |
1322 | return build_string (nm); | |
1323 | #else | |
1324 | ||
1325 | /* See if any variables are substituted into the string | |
1326 | and find the total length of their values in `total' */ | |
1327 | ||
1328 | for (p = nm; p != endp;) | |
1329 | if (*p != '$') | |
1330 | p++; | |
1331 | else | |
1332 | { | |
1333 | p++; | |
1334 | if (p == endp) | |
1335 | goto badsubst; | |
1336 | else if (*p == '$') | |
1337 | { | |
1338 | /* "$$" means a single "$" */ | |
1339 | p++; | |
1340 | total -= 1; | |
1341 | substituted = 1; | |
1342 | continue; | |
1343 | } | |
1344 | else if (*p == '{') | |
1345 | { | |
1346 | o = ++p; | |
1347 | while (p != endp && *p != '}') p++; | |
1348 | if (*p != '}') goto missingclose; | |
1349 | s = p; | |
1350 | } | |
1351 | else | |
1352 | { | |
1353 | o = p; | |
1354 | while (p != endp && (isalnum (*p) || *p == '_')) p++; | |
1355 | s = p; | |
1356 | } | |
1357 | ||
1358 | /* Copy out the variable name */ | |
1359 | target = (unsigned char *) alloca (s - o + 1); | |
1360 | strncpy (target, o, s - o); | |
1361 | target[s - o] = 0; | |
1362 | ||
1363 | /* Get variable value */ | |
1364 | o = (unsigned char *) egetenv (target); | |
1365 | /* The presence of this code makes vax 5.0 crash, for reasons yet unknown */ | |
1366 | #if 0 | |
1367 | #ifdef USG | |
1368 | if (!o && !strcmp (target, "USER")) | |
1369 | o = egetenv ("LOGNAME"); | |
1370 | #endif /* USG */ | |
1371 | #endif /* 0 */ | |
1372 | if (!o) goto badvar; | |
1373 | total += strlen (o); | |
1374 | substituted = 1; | |
1375 | } | |
1376 | ||
1377 | if (!substituted) | |
1378 | return string; | |
1379 | ||
1380 | /* If substitution required, recopy the string and do it */ | |
1381 | /* Make space in stack frame for the new copy */ | |
1382 | xnm = (unsigned char *) alloca (XSTRING (string)->size + total + 1); | |
1383 | x = xnm; | |
1384 | ||
1385 | /* Copy the rest of the name through, replacing $ constructs with values */ | |
1386 | for (p = nm; *p;) | |
1387 | if (*p != '$') | |
1388 | *x++ = *p++; | |
1389 | else | |
1390 | { | |
1391 | p++; | |
1392 | if (p == endp) | |
1393 | goto badsubst; | |
1394 | else if (*p == '$') | |
1395 | { | |
1396 | *x++ = *p++; | |
1397 | continue; | |
1398 | } | |
1399 | else if (*p == '{') | |
1400 | { | |
1401 | o = ++p; | |
1402 | while (p != endp && *p != '}') p++; | |
1403 | if (*p != '}') goto missingclose; | |
1404 | s = p++; | |
1405 | } | |
1406 | else | |
1407 | { | |
1408 | o = p; | |
1409 | while (p != endp && (isalnum (*p) || *p == '_')) p++; | |
1410 | s = p; | |
1411 | } | |
1412 | ||
1413 | /* Copy out the variable name */ | |
1414 | target = (unsigned char *) alloca (s - o + 1); | |
1415 | strncpy (target, o, s - o); | |
1416 | target[s - o] = 0; | |
1417 | ||
1418 | /* Get variable value */ | |
1419 | o = (unsigned char *) egetenv (target); | |
1420 | /* The presence of this code makes vax 5.0 crash, for reasons yet unknown */ | |
1421 | #if 0 | |
1422 | #ifdef USG | |
1423 | if (!o && !strcmp (target, "USER")) | |
1424 | o = egetenv ("LOGNAME"); | |
1425 | #endif /* USG */ | |
1426 | #endif /* 0 */ | |
1427 | if (!o) | |
1428 | goto badvar; | |
1429 | ||
1430 | strcpy (x, o); | |
1431 | x += strlen (o); | |
1432 | } | |
1433 | ||
1434 | *x = 0; | |
1435 | ||
1436 | /* If /~ or // appears, discard everything through first slash. */ | |
1437 | ||
1438 | for (p = xnm; p != x; p++) | |
1439 | if ((p[0] == '~' || | |
1440 | #ifdef APOLLO | |
1441 | /* // at start of file name is meaningful in Apollo system */ | |
1442 | (p[0] == '/' && p - 1 != xnm) | |
1443 | #else /* not APOLLO */ | |
1444 | p[0] == '/' | |
1445 | #endif /* not APOLLO */ | |
1446 | ) | |
1447 | && p != nm && p[-1] == '/') | |
1448 | xnm = p; | |
1449 | ||
1450 | return make_string (xnm, x - xnm); | |
1451 | ||
1452 | badsubst: | |
1453 | error ("Bad format environment-variable substitution"); | |
1454 | missingclose: | |
1455 | error ("Missing \"}\" in environment-variable substitution"); | |
1456 | badvar: | |
1457 | error ("Substituting nonexistent environment variable \"%s\"", target); | |
1458 | ||
1459 | /* NOTREACHED */ | |
1460 | #endif /* not VMS */ | |
1461 | } | |
1462 | \f | |
067ffa38 JB |
1463 | /* A slightly faster and more convenient way to get |
1464 | (directory-file-name (expand-file-name FOO)). The return value may | |
1465 | have had its last character zapped with a '\0' character, meaning | |
1466 | that it is acceptable to system calls, but not to other lisp | |
1467 | functions. Callers should make sure that the return value doesn't | |
1468 | escape. */ | |
1469 | ||
570d7624 JB |
1470 | Lisp_Object |
1471 | expand_and_dir_to_file (filename, defdir) | |
1472 | Lisp_Object filename, defdir; | |
1473 | { | |
1474 | register Lisp_Object abspath; | |
1475 | ||
1476 | abspath = Fexpand_file_name (filename, defdir); | |
1477 | #ifdef VMS | |
1478 | { | |
1479 | register int c = XSTRING (abspath)->data[XSTRING (abspath)->size - 1]; | |
1480 | if (c == ':' || c == ']' || c == '>') | |
1481 | abspath = Fdirectory_file_name (abspath); | |
1482 | } | |
1483 | #else | |
1484 | /* Remove final slash, if any (unless path is root). | |
1485 | stat behaves differently depending! */ | |
1486 | if (XSTRING (abspath)->size > 1 | |
1487 | && XSTRING (abspath)->data[XSTRING (abspath)->size - 1] == '/') | |
1488 | { | |
1489 | if (EQ (abspath, filename)) | |
1490 | abspath = Fcopy_sequence (abspath); | |
1491 | XSTRING (abspath)->data[XSTRING (abspath)->size - 1] = 0; | |
1492 | } | |
1493 | #endif | |
1494 | return abspath; | |
1495 | } | |
1496 | \f | |
1497 | barf_or_query_if_file_exists (absname, querystring, interactive) | |
1498 | Lisp_Object absname; | |
1499 | unsigned char *querystring; | |
1500 | int interactive; | |
1501 | { | |
1502 | register Lisp_Object tem; | |
1503 | struct gcpro gcpro1; | |
1504 | ||
1505 | if (access (XSTRING (absname)->data, 4) >= 0) | |
1506 | { | |
1507 | if (! interactive) | |
1508 | Fsignal (Qfile_already_exists, | |
1509 | Fcons (build_string ("File already exists"), | |
1510 | Fcons (absname, Qnil))); | |
1511 | GCPRO1 (absname); | |
1512 | tem = do_yes_or_no_p (format1 ("File %s already exists; %s anyway? ", | |
1513 | XSTRING (absname)->data, querystring)); | |
1514 | UNGCPRO; | |
265a9e55 | 1515 | if (NILP (tem)) |
570d7624 JB |
1516 | Fsignal (Qfile_already_exists, |
1517 | Fcons (build_string ("File already exists"), | |
1518 | Fcons (absname, Qnil))); | |
1519 | } | |
1520 | return; | |
1521 | } | |
1522 | ||
1523 | DEFUN ("copy-file", Fcopy_file, Scopy_file, 2, 4, | |
349a7710 | 1524 | "fCopy file: \nFCopy %s to file: \np\nP", |
570d7624 JB |
1525 | "Copy FILE to NEWNAME. Both args must be strings.\n\ |
1526 | Signals a `file-already-exists' error if file NEWNAME already exists,\n\ | |
1527 | unless a third argument OK-IF-ALREADY-EXISTS is supplied and non-nil.\n\ | |
1528 | A number as third arg means request confirmation if NEWNAME already exists.\n\ | |
1529 | This is what happens in interactive use with M-x.\n\ | |
349a7710 JB |
1530 | Fourth arg KEEP-TIME non-nil means give the new file the same\n\ |
1531 | last-modified time as the old one. (This works on only some systems.)\n\ | |
1532 | A prefix arg makes KEEP-TIME non-nil.") | |
570d7624 JB |
1533 | (filename, newname, ok_if_already_exists, keep_date) |
1534 | Lisp_Object filename, newname, ok_if_already_exists, keep_date; | |
1535 | { | |
1536 | int ifd, ofd, n; | |
1537 | char buf[16 * 1024]; | |
1538 | struct stat st; | |
32f4334d | 1539 | Lisp_Object handler; |
570d7624 | 1540 | struct gcpro gcpro1, gcpro2; |
b5148e85 | 1541 | int count = specpdl_ptr - specpdl; |
570d7624 JB |
1542 | |
1543 | GCPRO2 (filename, newname); | |
1544 | CHECK_STRING (filename, 0); | |
1545 | CHECK_STRING (newname, 1); | |
1546 | filename = Fexpand_file_name (filename, Qnil); | |
1547 | newname = Fexpand_file_name (newname, Qnil); | |
32f4334d | 1548 | |
0bf2eed2 | 1549 | /* If the input file name has special constructs in it, |
32f4334d | 1550 | call the corresponding file handler. */ |
642ef245 | 1551 | handler = Ffind_file_name_handler (filename); |
0bf2eed2 RS |
1552 | if (!NILP (handler)) |
1553 | return call3 (handler, Qcopy_file, filename, newname); | |
1554 | /* Likewise for output file name. */ | |
642ef245 | 1555 | handler = Ffind_file_name_handler (newname); |
32f4334d RS |
1556 | if (!NILP (handler)) |
1557 | return call3 (handler, Qcopy_file, filename, newname); | |
1558 | ||
265a9e55 | 1559 | if (NILP (ok_if_already_exists) |
570d7624 JB |
1560 | || XTYPE (ok_if_already_exists) == Lisp_Int) |
1561 | barf_or_query_if_file_exists (newname, "copy to it", | |
1562 | XTYPE (ok_if_already_exists) == Lisp_Int); | |
1563 | ||
1564 | ifd = open (XSTRING (filename)->data, 0); | |
1565 | if (ifd < 0) | |
1566 | report_file_error ("Opening input file", Fcons (filename, Qnil)); | |
1567 | ||
b5148e85 RS |
1568 | record_unwind_protect (close_file_unwind, make_number (ifd)); |
1569 | ||
570d7624 JB |
1570 | #ifdef VMS |
1571 | /* Create the copy file with the same record format as the input file */ | |
1572 | ofd = sys_creat (XSTRING (newname)->data, 0666, ifd); | |
1573 | #else | |
1574 | ofd = creat (XSTRING (newname)->data, 0666); | |
1575 | #endif /* VMS */ | |
1576 | if (ofd < 0) | |
66331187 | 1577 | report_file_error ("Opening output file", Fcons (newname, Qnil)); |
b5148e85 RS |
1578 | |
1579 | record_unwind_protect (close_file_unwind, make_number (ofd)); | |
570d7624 | 1580 | |
b5148e85 RS |
1581 | immediate_quit = 1; |
1582 | QUIT; | |
570d7624 JB |
1583 | while ((n = read (ifd, buf, sizeof buf)) > 0) |
1584 | if (write (ofd, buf, n) != n) | |
66331187 | 1585 | report_file_error ("I/O error", Fcons (newname, Qnil)); |
b5148e85 | 1586 | immediate_quit = 0; |
570d7624 JB |
1587 | |
1588 | if (fstat (ifd, &st) >= 0) | |
1589 | { | |
265a9e55 | 1590 | if (!NILP (keep_date)) |
570d7624 | 1591 | { |
de5bf5d3 JB |
1592 | EMACS_TIME atime, mtime; |
1593 | EMACS_SET_SECS_USECS (atime, st.st_atime, 0); | |
1594 | EMACS_SET_SECS_USECS (mtime, st.st_mtime, 0); | |
1595 | EMACS_SET_UTIMES (XSTRING (newname)->data, atime, mtime); | |
570d7624 | 1596 | } |
570d7624 JB |
1597 | #ifdef APOLLO |
1598 | if (!egetenv ("USE_DOMAIN_ACLS")) | |
1599 | #endif | |
de5bf5d3 | 1600 | chmod (XSTRING (newname)->data, st.st_mode & 07777); |
570d7624 JB |
1601 | } |
1602 | ||
b5148e85 RS |
1603 | /* Discard the unwind protects. */ |
1604 | specpdl_ptr = specpdl + count; | |
1605 | ||
570d7624 JB |
1606 | close (ifd); |
1607 | if (close (ofd) < 0) | |
1608 | report_file_error ("I/O error", Fcons (newname, Qnil)); | |
1609 | ||
1610 | UNGCPRO; | |
1611 | return Qnil; | |
1612 | } | |
1613 | ||
9bbe01fb | 1614 | DEFUN ("make-directory-internal", Fmake_directory_internal, |
353cfc19 | 1615 | Smake_directory_internal, 1, 1, 0, |
570d7624 JB |
1616 | "Create a directory. One argument, a file name string.") |
1617 | (dirname) | |
1618 | Lisp_Object dirname; | |
1619 | { | |
1620 | unsigned char *dir; | |
32f4334d | 1621 | Lisp_Object handler; |
570d7624 JB |
1622 | |
1623 | CHECK_STRING (dirname, 0); | |
1624 | dirname = Fexpand_file_name (dirname, Qnil); | |
32f4334d | 1625 | |
642ef245 | 1626 | handler = Ffind_file_name_handler (dirname); |
32f4334d | 1627 | if (!NILP (handler)) |
9bbe01fb RS |
1628 | return call3 (handler, Qmake_directory, dirname, Qnil); |
1629 | ||
570d7624 JB |
1630 | dir = XSTRING (dirname)->data; |
1631 | ||
1632 | if (mkdir (dir, 0777) != 0) | |
1633 | report_file_error ("Creating directory", Flist (1, &dirname)); | |
1634 | ||
32f4334d | 1635 | return Qnil; |
570d7624 JB |
1636 | } |
1637 | ||
aa734e17 RS |
1638 | DEFUN ("delete-directory", Fdelete_directory, Sdelete_directory, 1, 1, "FDelete directory: ", |
1639 | "Delete a directory. One argument, a file name string.") | |
570d7624 JB |
1640 | (dirname) |
1641 | Lisp_Object dirname; | |
1642 | { | |
1643 | unsigned char *dir; | |
32f4334d | 1644 | Lisp_Object handler; |
570d7624 JB |
1645 | |
1646 | CHECK_STRING (dirname, 0); | |
1647 | dirname = Fexpand_file_name (dirname, Qnil); | |
1648 | dir = XSTRING (dirname)->data; | |
1649 | ||
642ef245 | 1650 | handler = Ffind_file_name_handler (dirname); |
32f4334d RS |
1651 | if (!NILP (handler)) |
1652 | return call2 (handler, Qdelete_directory, dirname); | |
1653 | ||
570d7624 JB |
1654 | if (rmdir (dir) != 0) |
1655 | report_file_error ("Removing directory", Flist (1, &dirname)); | |
1656 | ||
1657 | return Qnil; | |
1658 | } | |
1659 | ||
1660 | DEFUN ("delete-file", Fdelete_file, Sdelete_file, 1, 1, "fDelete file: ", | |
1661 | "Delete specified file. One argument, a file name string.\n\ | |
1662 | If file has multiple names, it continues to exist with the other names.") | |
1663 | (filename) | |
1664 | Lisp_Object filename; | |
1665 | { | |
32f4334d | 1666 | Lisp_Object handler; |
570d7624 JB |
1667 | CHECK_STRING (filename, 0); |
1668 | filename = Fexpand_file_name (filename, Qnil); | |
32f4334d | 1669 | |
642ef245 | 1670 | handler = Ffind_file_name_handler (filename); |
32f4334d RS |
1671 | if (!NILP (handler)) |
1672 | return call2 (handler, Qdelete_file, filename); | |
1673 | ||
570d7624 JB |
1674 | if (0 > unlink (XSTRING (filename)->data)) |
1675 | report_file_error ("Removing old name", Flist (1, &filename)); | |
1676 | return Qnil; | |
1677 | } | |
1678 | ||
1679 | DEFUN ("rename-file", Frename_file, Srename_file, 2, 3, | |
1680 | "fRename file: \nFRename %s to file: \np", | |
1681 | "Rename FILE as NEWNAME. Both args strings.\n\ | |
1682 | If file has names other than FILE, it continues to have those names.\n\ | |
1683 | Signals a `file-already-exists' error if a file NEWNAME already exists\n\ | |
1684 | unless optional third argument OK-IF-ALREADY-EXISTS is non-nil.\n\ | |
1685 | A number as third arg means request confirmation if NEWNAME already exists.\n\ | |
1686 | This is what happens in interactive use with M-x.") | |
1687 | (filename, newname, ok_if_already_exists) | |
1688 | Lisp_Object filename, newname, ok_if_already_exists; | |
1689 | { | |
1690 | #ifdef NO_ARG_ARRAY | |
1691 | Lisp_Object args[2]; | |
1692 | #endif | |
32f4334d | 1693 | Lisp_Object handler; |
570d7624 JB |
1694 | struct gcpro gcpro1, gcpro2; |
1695 | ||
1696 | GCPRO2 (filename, newname); | |
1697 | CHECK_STRING (filename, 0); | |
1698 | CHECK_STRING (newname, 1); | |
1699 | filename = Fexpand_file_name (filename, Qnil); | |
1700 | newname = Fexpand_file_name (newname, Qnil); | |
32f4334d RS |
1701 | |
1702 | /* If the file name has special constructs in it, | |
1703 | call the corresponding file handler. */ | |
642ef245 | 1704 | handler = Ffind_file_name_handler (filename); |
32f4334d RS |
1705 | if (!NILP (handler)) |
1706 | return call3 (handler, Qrename_file, filename, newname); | |
1707 | ||
265a9e55 | 1708 | if (NILP (ok_if_already_exists) |
570d7624 JB |
1709 | || XTYPE (ok_if_already_exists) == Lisp_Int) |
1710 | barf_or_query_if_file_exists (newname, "rename to it", | |
1711 | XTYPE (ok_if_already_exists) == Lisp_Int); | |
1712 | #ifndef BSD4_1 | |
1713 | if (0 > rename (XSTRING (filename)->data, XSTRING (newname)->data)) | |
1714 | #else | |
1715 | if (0 > link (XSTRING (filename)->data, XSTRING (newname)->data) | |
1716 | || 0 > unlink (XSTRING (filename)->data)) | |
1717 | #endif | |
1718 | { | |
1719 | if (errno == EXDEV) | |
1720 | { | |
1721 | Fcopy_file (filename, newname, ok_if_already_exists, Qt); | |
1722 | Fdelete_file (filename); | |
1723 | } | |
1724 | else | |
1725 | #ifdef NO_ARG_ARRAY | |
1726 | { | |
1727 | args[0] = filename; | |
1728 | args[1] = newname; | |
1729 | report_file_error ("Renaming", Flist (2, args)); | |
1730 | } | |
1731 | #else | |
1732 | report_file_error ("Renaming", Flist (2, &filename)); | |
1733 | #endif | |
1734 | } | |
1735 | UNGCPRO; | |
1736 | return Qnil; | |
1737 | } | |
1738 | ||
1739 | DEFUN ("add-name-to-file", Fadd_name_to_file, Sadd_name_to_file, 2, 3, | |
1740 | "fAdd name to file: \nFName to add to %s: \np", | |
1741 | "Give FILE additional name NEWNAME. Both args strings.\n\ | |
1742 | Signals a `file-already-exists' error if a file NEWNAME already exists\n\ | |
1743 | unless optional third argument OK-IF-ALREADY-EXISTS is non-nil.\n\ | |
1744 | A number as third arg means request confirmation if NEWNAME already exists.\n\ | |
1745 | This is what happens in interactive use with M-x.") | |
1746 | (filename, newname, ok_if_already_exists) | |
1747 | Lisp_Object filename, newname, ok_if_already_exists; | |
1748 | { | |
1749 | #ifdef NO_ARG_ARRAY | |
1750 | Lisp_Object args[2]; | |
1751 | #endif | |
32f4334d | 1752 | Lisp_Object handler; |
570d7624 JB |
1753 | struct gcpro gcpro1, gcpro2; |
1754 | ||
1755 | GCPRO2 (filename, newname); | |
1756 | CHECK_STRING (filename, 0); | |
1757 | CHECK_STRING (newname, 1); | |
1758 | filename = Fexpand_file_name (filename, Qnil); | |
1759 | newname = Fexpand_file_name (newname, Qnil); | |
32f4334d RS |
1760 | |
1761 | /* If the file name has special constructs in it, | |
1762 | call the corresponding file handler. */ | |
642ef245 | 1763 | handler = Ffind_file_name_handler (filename); |
32f4334d RS |
1764 | if (!NILP (handler)) |
1765 | return call3 (handler, Qadd_name_to_file, filename, newname); | |
1766 | ||
265a9e55 | 1767 | if (NILP (ok_if_already_exists) |
570d7624 JB |
1768 | || XTYPE (ok_if_already_exists) == Lisp_Int) |
1769 | barf_or_query_if_file_exists (newname, "make it a new name", | |
1770 | XTYPE (ok_if_already_exists) == Lisp_Int); | |
1771 | unlink (XSTRING (newname)->data); | |
1772 | if (0 > link (XSTRING (filename)->data, XSTRING (newname)->data)) | |
1773 | { | |
1774 | #ifdef NO_ARG_ARRAY | |
1775 | args[0] = filename; | |
1776 | args[1] = newname; | |
1777 | report_file_error ("Adding new name", Flist (2, args)); | |
1778 | #else | |
1779 | report_file_error ("Adding new name", Flist (2, &filename)); | |
1780 | #endif | |
1781 | } | |
1782 | ||
1783 | UNGCPRO; | |
1784 | return Qnil; | |
1785 | } | |
1786 | ||
1787 | #ifdef S_IFLNK | |
1788 | DEFUN ("make-symbolic-link", Fmake_symbolic_link, Smake_symbolic_link, 2, 3, | |
1789 | "FMake symbolic link to file: \nFMake symbolic link to file %s: \np", | |
1790 | "Make a symbolic link to FILENAME, named LINKNAME. Both args strings.\n\ | |
1791 | Signals a `file-already-exists' error if a file NEWNAME already exists\n\ | |
1792 | unless optional third argument OK-IF-ALREADY-EXISTS is non-nil.\n\ | |
1793 | A number as third arg means request confirmation if NEWNAME already exists.\n\ | |
1794 | This happens for interactive use with M-x.") | |
e5d77022 JB |
1795 | (filename, linkname, ok_if_already_exists) |
1796 | Lisp_Object filename, linkname, ok_if_already_exists; | |
570d7624 JB |
1797 | { |
1798 | #ifdef NO_ARG_ARRAY | |
1799 | Lisp_Object args[2]; | |
1800 | #endif | |
32f4334d | 1801 | Lisp_Object handler; |
570d7624 JB |
1802 | struct gcpro gcpro1, gcpro2; |
1803 | ||
e5d77022 | 1804 | GCPRO2 (filename, linkname); |
570d7624 | 1805 | CHECK_STRING (filename, 0); |
e5d77022 | 1806 | CHECK_STRING (linkname, 1); |
570d7624 JB |
1807 | #if 0 /* This made it impossible to make a link to a relative name. */ |
1808 | filename = Fexpand_file_name (filename, Qnil); | |
1809 | #endif | |
e5d77022 | 1810 | linkname = Fexpand_file_name (linkname, Qnil); |
32f4334d RS |
1811 | |
1812 | /* If the file name has special constructs in it, | |
1813 | call the corresponding file handler. */ | |
642ef245 | 1814 | handler = Ffind_file_name_handler (filename); |
32f4334d | 1815 | if (!NILP (handler)) |
3eac9910 | 1816 | return call3 (handler, Qmake_symbolic_link, filename, linkname); |
32f4334d | 1817 | |
265a9e55 | 1818 | if (NILP (ok_if_already_exists) |
570d7624 | 1819 | || XTYPE (ok_if_already_exists) == Lisp_Int) |
e5d77022 | 1820 | barf_or_query_if_file_exists (linkname, "make it a link", |
570d7624 | 1821 | XTYPE (ok_if_already_exists) == Lisp_Int); |
e5d77022 | 1822 | if (0 > symlink (XSTRING (filename)->data, XSTRING (linkname)->data)) |
570d7624 JB |
1823 | { |
1824 | /* If we didn't complain already, silently delete existing file. */ | |
1825 | if (errno == EEXIST) | |
1826 | { | |
1827 | unlink (XSTRING (filename)->data); | |
e5d77022 | 1828 | if (0 <= symlink (XSTRING (filename)->data, XSTRING (linkname)->data)) |
570d7624 JB |
1829 | return Qnil; |
1830 | } | |
1831 | ||
1832 | #ifdef NO_ARG_ARRAY | |
1833 | args[0] = filename; | |
e5d77022 | 1834 | args[1] = linkname; |
570d7624 JB |
1835 | report_file_error ("Making symbolic link", Flist (2, args)); |
1836 | #else | |
1837 | report_file_error ("Making symbolic link", Flist (2, &filename)); | |
1838 | #endif | |
1839 | } | |
1840 | UNGCPRO; | |
1841 | return Qnil; | |
1842 | } | |
1843 | #endif /* S_IFLNK */ | |
1844 | ||
1845 | #ifdef VMS | |
1846 | ||
1847 | DEFUN ("define-logical-name", Fdefine_logical_name, Sdefine_logical_name, | |
1848 | 2, 2, "sDefine logical name: \nsDefine logical name %s as: ", | |
1849 | "Define the job-wide logical name NAME to have the value STRING.\n\ | |
1850 | If STRING is nil or a null string, the logical name NAME is deleted.") | |
1851 | (varname, string) | |
1852 | Lisp_Object varname; | |
1853 | Lisp_Object string; | |
1854 | { | |
1855 | CHECK_STRING (varname, 0); | |
265a9e55 | 1856 | if (NILP (string)) |
570d7624 JB |
1857 | delete_logical_name (XSTRING (varname)->data); |
1858 | else | |
1859 | { | |
1860 | CHECK_STRING (string, 1); | |
1861 | ||
1862 | if (XSTRING (string)->size == 0) | |
1863 | delete_logical_name (XSTRING (varname)->data); | |
1864 | else | |
1865 | define_logical_name (XSTRING (varname)->data, XSTRING (string)->data); | |
1866 | } | |
1867 | ||
1868 | return string; | |
1869 | } | |
1870 | #endif /* VMS */ | |
1871 | ||
1872 | #ifdef HPUX_NET | |
1873 | ||
1874 | DEFUN ("sysnetunam", Fsysnetunam, Ssysnetunam, 2, 2, 0, | |
1875 | "Open a network connection to PATH using LOGIN as the login string.") | |
1876 | (path, login) | |
1877 | Lisp_Object path, login; | |
1878 | { | |
1879 | int netresult; | |
1880 | ||
1881 | CHECK_STRING (path, 0); | |
1882 | CHECK_STRING (login, 0); | |
1883 | ||
1884 | netresult = netunam (XSTRING (path)->data, XSTRING (login)->data); | |
1885 | ||
1886 | if (netresult == -1) | |
1887 | return Qnil; | |
1888 | else | |
1889 | return Qt; | |
1890 | } | |
1891 | #endif /* HPUX_NET */ | |
1892 | \f | |
1893 | DEFUN ("file-name-absolute-p", Ffile_name_absolute_p, Sfile_name_absolute_p, | |
1894 | 1, 1, 0, | |
1895 | "Return t if file FILENAME specifies an absolute path name.\n\ | |
1896 | On Unix, this is a name starting with a `/' or a `~'.") | |
1897 | (filename) | |
1898 | Lisp_Object filename; | |
1899 | { | |
1900 | unsigned char *ptr; | |
1901 | ||
1902 | CHECK_STRING (filename, 0); | |
1903 | ptr = XSTRING (filename)->data; | |
1904 | if (*ptr == '/' || *ptr == '~' | |
1905 | #ifdef VMS | |
1906 | /* ??? This criterion is probably wrong for '<'. */ | |
1907 | || index (ptr, ':') || index (ptr, '<') | |
1908 | || (*ptr == '[' && (ptr[1] != '-' || (ptr[2] != '.' && ptr[2] != ']')) | |
1909 | && ptr[1] != '.') | |
1910 | #endif /* VMS */ | |
1911 | ) | |
1912 | return Qt; | |
1913 | else | |
1914 | return Qnil; | |
1915 | } | |
1916 | ||
1917 | DEFUN ("file-exists-p", Ffile_exists_p, Sfile_exists_p, 1, 1, 0, | |
1918 | "Return t if file FILENAME exists. (This does not mean you can read it.)\n\ | |
1919 | See also `file-readable-p' and `file-attributes'.") | |
1920 | (filename) | |
1921 | Lisp_Object filename; | |
1922 | { | |
1923 | Lisp_Object abspath; | |
32f4334d | 1924 | Lisp_Object handler; |
570d7624 JB |
1925 | |
1926 | CHECK_STRING (filename, 0); | |
1927 | abspath = Fexpand_file_name (filename, Qnil); | |
32f4334d RS |
1928 | |
1929 | /* If the file name has special constructs in it, | |
1930 | call the corresponding file handler. */ | |
642ef245 | 1931 | handler = Ffind_file_name_handler (abspath); |
32f4334d | 1932 | if (!NILP (handler)) |
09121adc | 1933 | return call2 (handler, Qfile_exists_p, abspath); |
32f4334d | 1934 | |
570d7624 JB |
1935 | return (access (XSTRING (abspath)->data, 0) >= 0) ? Qt : Qnil; |
1936 | } | |
1937 | ||
1938 | DEFUN ("file-executable-p", Ffile_executable_p, Sfile_executable_p, 1, 1, 0, | |
1939 | "Return t if FILENAME can be executed by you.\n\ | |
1940 | For directories this means you can change to that directory.") | |
1941 | (filename) | |
1942 | Lisp_Object filename; | |
1943 | ||
1944 | { | |
1945 | Lisp_Object abspath; | |
32f4334d | 1946 | Lisp_Object handler; |
570d7624 JB |
1947 | |
1948 | CHECK_STRING (filename, 0); | |
1949 | abspath = Fexpand_file_name (filename, Qnil); | |
32f4334d RS |
1950 | |
1951 | /* If the file name has special constructs in it, | |
1952 | call the corresponding file handler. */ | |
642ef245 | 1953 | handler = Ffind_file_name_handler (abspath); |
32f4334d | 1954 | if (!NILP (handler)) |
09121adc | 1955 | return call2 (handler, Qfile_executable_p, abspath); |
32f4334d | 1956 | |
570d7624 JB |
1957 | return (access (XSTRING (abspath)->data, 1) >= 0) ? Qt : Qnil; |
1958 | } | |
1959 | ||
1960 | DEFUN ("file-readable-p", Ffile_readable_p, Sfile_readable_p, 1, 1, 0, | |
1961 | "Return t if file FILENAME exists and you can read it.\n\ | |
1962 | See also `file-exists-p' and `file-attributes'.") | |
1963 | (filename) | |
1964 | Lisp_Object filename; | |
1965 | { | |
1966 | Lisp_Object abspath; | |
32f4334d | 1967 | Lisp_Object handler; |
570d7624 JB |
1968 | |
1969 | CHECK_STRING (filename, 0); | |
1970 | abspath = Fexpand_file_name (filename, Qnil); | |
32f4334d RS |
1971 | |
1972 | /* If the file name has special constructs in it, | |
1973 | call the corresponding file handler. */ | |
642ef245 | 1974 | handler = Ffind_file_name_handler (abspath); |
32f4334d | 1975 | if (!NILP (handler)) |
09121adc | 1976 | return call2 (handler, Qfile_readable_p, abspath); |
32f4334d | 1977 | |
570d7624 JB |
1978 | return (access (XSTRING (abspath)->data, 4) >= 0) ? Qt : Qnil; |
1979 | } | |
1980 | ||
1981 | DEFUN ("file-symlink-p", Ffile_symlink_p, Sfile_symlink_p, 1, 1, 0, | |
1982 | "If file FILENAME is the name of a symbolic link\n\ | |
1983 | returns the name of the file to which it is linked.\n\ | |
1984 | Otherwise returns NIL.") | |
1985 | (filename) | |
1986 | Lisp_Object filename; | |
1987 | { | |
1988 | #ifdef S_IFLNK | |
1989 | char *buf; | |
1990 | int bufsize; | |
1991 | int valsize; | |
1992 | Lisp_Object val; | |
32f4334d | 1993 | Lisp_Object handler; |
570d7624 JB |
1994 | |
1995 | CHECK_STRING (filename, 0); | |
1996 | filename = Fexpand_file_name (filename, Qnil); | |
1997 | ||
32f4334d RS |
1998 | /* If the file name has special constructs in it, |
1999 | call the corresponding file handler. */ | |
642ef245 | 2000 | handler = Ffind_file_name_handler (filename); |
32f4334d RS |
2001 | if (!NILP (handler)) |
2002 | return call2 (handler, Qfile_symlink_p, filename); | |
2003 | ||
570d7624 JB |
2004 | bufsize = 100; |
2005 | while (1) | |
2006 | { | |
2007 | buf = (char *) xmalloc (bufsize); | |
2008 | bzero (buf, bufsize); | |
2009 | valsize = readlink (XSTRING (filename)->data, buf, bufsize); | |
2010 | if (valsize < bufsize) break; | |
2011 | /* Buffer was not long enough */ | |
2012 | free (buf); | |
2013 | bufsize *= 2; | |
2014 | } | |
2015 | if (valsize == -1) | |
2016 | { | |
2017 | free (buf); | |
2018 | return Qnil; | |
2019 | } | |
2020 | val = make_string (buf, valsize); | |
2021 | free (buf); | |
2022 | return val; | |
2023 | #else /* not S_IFLNK */ | |
2024 | return Qnil; | |
2025 | #endif /* not S_IFLNK */ | |
2026 | } | |
2027 | ||
2028 | /* Having this before file-symlink-p mysteriously caused it to be forgotten | |
2029 | on the RT/PC. */ | |
2030 | DEFUN ("file-writable-p", Ffile_writable_p, Sfile_writable_p, 1, 1, 0, | |
2031 | "Return t if file FILENAME can be written or created by you.") | |
2032 | (filename) | |
2033 | Lisp_Object filename; | |
2034 | { | |
2035 | Lisp_Object abspath, dir; | |
32f4334d | 2036 | Lisp_Object handler; |
570d7624 JB |
2037 | |
2038 | CHECK_STRING (filename, 0); | |
2039 | abspath = Fexpand_file_name (filename, Qnil); | |
32f4334d RS |
2040 | |
2041 | /* If the file name has special constructs in it, | |
2042 | call the corresponding file handler. */ | |
642ef245 | 2043 | handler = Ffind_file_name_handler (abspath); |
32f4334d | 2044 | if (!NILP (handler)) |
09121adc | 2045 | return call2 (handler, Qfile_writable_p, abspath); |
32f4334d | 2046 | |
570d7624 JB |
2047 | if (access (XSTRING (abspath)->data, 0) >= 0) |
2048 | return (access (XSTRING (abspath)->data, 2) >= 0) ? Qt : Qnil; | |
2049 | dir = Ffile_name_directory (abspath); | |
2050 | #ifdef VMS | |
265a9e55 | 2051 | if (!NILP (dir)) |
570d7624 JB |
2052 | dir = Fdirectory_file_name (dir); |
2053 | #endif /* VMS */ | |
265a9e55 | 2054 | return (access (!NILP (dir) ? (char *) XSTRING (dir)->data : "", 2) >= 0 |
570d7624 JB |
2055 | ? Qt : Qnil); |
2056 | } | |
2057 | ||
2058 | DEFUN ("file-directory-p", Ffile_directory_p, Sfile_directory_p, 1, 1, 0, | |
2059 | "Return t if file FILENAME is the name of a directory as a file.\n\ | |
2060 | A directory name spec may be given instead; then the value is t\n\ | |
2061 | if the directory so specified exists and really is a directory.") | |
2062 | (filename) | |
2063 | Lisp_Object filename; | |
2064 | { | |
2065 | register Lisp_Object abspath; | |
2066 | struct stat st; | |
32f4334d | 2067 | Lisp_Object handler; |
570d7624 JB |
2068 | |
2069 | abspath = expand_and_dir_to_file (filename, current_buffer->directory); | |
2070 | ||
32f4334d RS |
2071 | /* If the file name has special constructs in it, |
2072 | call the corresponding file handler. */ | |
642ef245 | 2073 | handler = Ffind_file_name_handler (abspath); |
32f4334d | 2074 | if (!NILP (handler)) |
09121adc | 2075 | return call2 (handler, Qfile_directory_p, abspath); |
32f4334d | 2076 | |
570d7624 JB |
2077 | if (stat (XSTRING (abspath)->data, &st) < 0) |
2078 | return Qnil; | |
2079 | return (st.st_mode & S_IFMT) == S_IFDIR ? Qt : Qnil; | |
2080 | } | |
2081 | ||
b72dea2a JB |
2082 | DEFUN ("file-accessible-directory-p", Ffile_accessible_directory_p, Sfile_accessible_directory_p, 1, 1, 0, |
2083 | "Return t if file FILENAME is the name of a directory as a file,\n\ | |
2084 | and files in that directory can be opened by you. In order to use a\n\ | |
2085 | directory as a buffer's current directory, this predicate must return true.\n\ | |
2086 | A directory name spec may be given instead; then the value is t\n\ | |
2087 | if the directory so specified exists and really is a readable and\n\ | |
2088 | searchable directory.") | |
2089 | (filename) | |
2090 | Lisp_Object filename; | |
2091 | { | |
32f4334d RS |
2092 | Lisp_Object handler; |
2093 | ||
2094 | /* If the file name has special constructs in it, | |
2095 | call the corresponding file handler. */ | |
642ef245 | 2096 | handler = Ffind_file_name_handler (filename); |
32f4334d RS |
2097 | if (!NILP (handler)) |
2098 | return call2 (handler, Qfile_accessible_directory_p, filename); | |
2099 | ||
b72dea2a JB |
2100 | if (NILP (Ffile_directory_p (filename)) |
2101 | || NILP (Ffile_executable_p (filename))) | |
2102 | return Qnil; | |
2103 | else | |
2104 | return Qt; | |
2105 | } | |
2106 | ||
570d7624 JB |
2107 | DEFUN ("file-modes", Ffile_modes, Sfile_modes, 1, 1, 0, |
2108 | "Return mode bits of FILE, as an integer.") | |
2109 | (filename) | |
2110 | Lisp_Object filename; | |
2111 | { | |
2112 | Lisp_Object abspath; | |
2113 | struct stat st; | |
32f4334d | 2114 | Lisp_Object handler; |
570d7624 JB |
2115 | |
2116 | abspath = expand_and_dir_to_file (filename, current_buffer->directory); | |
2117 | ||
32f4334d RS |
2118 | /* If the file name has special constructs in it, |
2119 | call the corresponding file handler. */ | |
642ef245 | 2120 | handler = Ffind_file_name_handler (abspath); |
32f4334d | 2121 | if (!NILP (handler)) |
09121adc | 2122 | return call2 (handler, Qfile_modes, abspath); |
32f4334d | 2123 | |
570d7624 JB |
2124 | if (stat (XSTRING (abspath)->data, &st) < 0) |
2125 | return Qnil; | |
2126 | return make_number (st.st_mode & 07777); | |
2127 | } | |
2128 | ||
2129 | DEFUN ("set-file-modes", Fset_file_modes, Sset_file_modes, 2, 2, 0, | |
2130 | "Set mode bits of FILE to MODE (an integer).\n\ | |
2131 | Only the 12 low bits of MODE are used.") | |
2132 | (filename, mode) | |
2133 | Lisp_Object filename, mode; | |
2134 | { | |
2135 | Lisp_Object abspath; | |
32f4334d | 2136 | Lisp_Object handler; |
570d7624 JB |
2137 | |
2138 | abspath = Fexpand_file_name (filename, current_buffer->directory); | |
2139 | CHECK_NUMBER (mode, 1); | |
2140 | ||
32f4334d RS |
2141 | /* If the file name has special constructs in it, |
2142 | call the corresponding file handler. */ | |
642ef245 | 2143 | handler = Ffind_file_name_handler (abspath); |
32f4334d | 2144 | if (!NILP (handler)) |
09121adc | 2145 | return call3 (handler, Qset_file_modes, abspath, mode); |
32f4334d | 2146 | |
570d7624 JB |
2147 | #ifndef APOLLO |
2148 | if (chmod (XSTRING (abspath)->data, XINT (mode)) < 0) | |
2149 | report_file_error ("Doing chmod", Fcons (abspath, Qnil)); | |
2150 | #else /* APOLLO */ | |
2151 | if (!egetenv ("USE_DOMAIN_ACLS")) | |
2152 | { | |
2153 | struct stat st; | |
2154 | struct timeval tvp[2]; | |
2155 | ||
2156 | /* chmod on apollo also change the file's modtime; need to save the | |
2157 | modtime and then restore it. */ | |
2158 | if (stat (XSTRING (abspath)->data, &st) < 0) | |
2159 | { | |
2160 | report_file_error ("Doing chmod", Fcons (abspath, Qnil)); | |
2161 | return (Qnil); | |
2162 | } | |
2163 | ||
2164 | if (chmod (XSTRING (abspath)->data, XINT (mode)) < 0) | |
2165 | report_file_error ("Doing chmod", Fcons (abspath, Qnil)); | |
2166 | ||
2167 | /* reset the old accessed and modified times. */ | |
2168 | tvp[0].tv_sec = st.st_atime + 1; /* +1 due to an Apollo roundoff bug */ | |
2169 | tvp[0].tv_usec = 0; | |
2170 | tvp[1].tv_sec = st.st_mtime + 1; /* +1 due to an Apollo roundoff bug */ | |
2171 | tvp[1].tv_usec = 0; | |
2172 | ||
2173 | if (utimes (XSTRING (abspath)->data, tvp) < 0) | |
2174 | report_file_error ("Doing utimes", Fcons (abspath, Qnil)); | |
2175 | } | |
2176 | #endif /* APOLLO */ | |
2177 | ||
2178 | return Qnil; | |
2179 | } | |
2180 | ||
36a8c287 JB |
2181 | DEFUN ("set-umask", Fset_umask, Sset_umask, 1, 1, 0, |
2182 | "Select which permission bits to disable in newly created files.\n\ | |
2183 | MASK should be an integer; if a permission's bit in MASK is 1,\n\ | |
2184 | subsequently created files will not have that permission enabled.\n\ | |
2185 | Only the low 9 bits are used.\n\ | |
2186 | This setting is inherited by subprocesses.") | |
2187 | (mask) | |
2188 | Lisp_Object mask; | |
2189 | { | |
2190 | CHECK_NUMBER (mask, 0); | |
2191 | ||
2192 | umask (XINT (mask) & 0777); | |
2193 | ||
2194 | return Qnil; | |
2195 | } | |
2196 | ||
2197 | DEFUN ("umask", Fumask, Sumask, 0, 0, 0, | |
2198 | "Return the current umask value.\n\ | |
2199 | The umask value determines which permissions are enabled in newly\n\ | |
2200 | created files. If a permission's bit in the umask is 1, subsequently\n\ | |
2201 | created files will not have that permission enabled.") | |
2202 | () | |
2203 | { | |
2204 | Lisp_Object mask; | |
2205 | ||
2206 | XSET (mask, Lisp_Int, umask (0)); | |
2207 | umask (XINT (mask)); | |
2208 | ||
2209 | return mask; | |
2210 | } | |
2211 | ||
85ffea93 RS |
2212 | #ifdef unix |
2213 | ||
2214 | DEFUN ("unix-sync", Funix_sync, Sunix_sync, 0, 0, "", | |
2215 | "Tell Unix to finish all pending disk updates.") | |
2216 | () | |
2217 | { | |
2218 | sync (); | |
2219 | return Qnil; | |
2220 | } | |
2221 | ||
2222 | #endif /* unix */ | |
2223 | ||
570d7624 JB |
2224 | DEFUN ("file-newer-than-file-p", Ffile_newer_than_file_p, Sfile_newer_than_file_p, 2, 2, 0, |
2225 | "Return t if file FILE1 is newer than file FILE2.\n\ | |
2226 | If FILE1 does not exist, the answer is nil;\n\ | |
2227 | otherwise, if FILE2 does not exist, the answer is t.") | |
2228 | (file1, file2) | |
2229 | Lisp_Object file1, file2; | |
2230 | { | |
32f4334d | 2231 | Lisp_Object abspath1, abspath2; |
570d7624 JB |
2232 | struct stat st; |
2233 | int mtime1; | |
32f4334d | 2234 | Lisp_Object handler; |
09121adc | 2235 | struct gcpro gcpro1, gcpro2; |
570d7624 JB |
2236 | |
2237 | CHECK_STRING (file1, 0); | |
2238 | CHECK_STRING (file2, 0); | |
2239 | ||
09121adc RS |
2240 | abspath1 = Qnil; |
2241 | GCPRO2 (abspath1, file2); | |
32f4334d RS |
2242 | abspath1 = expand_and_dir_to_file (file1, current_buffer->directory); |
2243 | abspath2 = expand_and_dir_to_file (file2, current_buffer->directory); | |
09121adc | 2244 | UNGCPRO; |
570d7624 | 2245 | |
32f4334d RS |
2246 | /* If the file name has special constructs in it, |
2247 | call the corresponding file handler. */ | |
642ef245 | 2248 | handler = Ffind_file_name_handler (abspath1); |
32f4334d RS |
2249 | if (!NILP (handler)) |
2250 | return call3 (handler, Qfile_newer_than_file_p, abspath1, abspath2); | |
2251 | ||
2252 | if (stat (XSTRING (abspath1)->data, &st) < 0) | |
570d7624 JB |
2253 | return Qnil; |
2254 | ||
2255 | mtime1 = st.st_mtime; | |
2256 | ||
32f4334d | 2257 | if (stat (XSTRING (abspath2)->data, &st) < 0) |
570d7624 JB |
2258 | return Qt; |
2259 | ||
2260 | return (mtime1 > st.st_mtime) ? Qt : Qnil; | |
2261 | } | |
2262 | \f | |
570d7624 JB |
2263 | DEFUN ("insert-file-contents", Finsert_file_contents, Sinsert_file_contents, |
2264 | 1, 2, 0, | |
2265 | "Insert contents of file FILENAME after point.\n\ | |
2266 | Returns list of absolute pathname and length of data inserted.\n\ | |
2267 | If second argument VISIT is non-nil, the buffer's visited filename\n\ | |
2268 | and last save file modtime are set, and it is marked unmodified.\n\ | |
2269 | If visiting and the file does not exist, visiting is completed\n\ | |
2270 | before the error is signaled.") | |
2271 | (filename, visit) | |
2272 | Lisp_Object filename, visit; | |
2273 | { | |
2274 | struct stat st; | |
2275 | register int fd; | |
2276 | register int inserted = 0; | |
2277 | register int how_much; | |
2278 | int count = specpdl_ptr - specpdl; | |
2279 | struct gcpro gcpro1; | |
32f4334d RS |
2280 | Lisp_Object handler, val; |
2281 | ||
2282 | val = Qnil; | |
2283 | ||
570d7624 | 2284 | GCPRO1 (filename); |
265a9e55 | 2285 | if (!NILP (current_buffer->read_only)) |
570d7624 JB |
2286 | Fbarf_if_buffer_read_only(); |
2287 | ||
2288 | CHECK_STRING (filename, 0); | |
2289 | filename = Fexpand_file_name (filename, Qnil); | |
2290 | ||
32f4334d RS |
2291 | /* If the file name has special constructs in it, |
2292 | call the corresponding file handler. */ | |
642ef245 | 2293 | handler = Ffind_file_name_handler (filename); |
32f4334d RS |
2294 | if (!NILP (handler)) |
2295 | { | |
2296 | val = call3 (handler, Qinsert_file_contents, filename, visit); | |
2297 | st.st_mtime = 0; | |
2298 | goto handled; | |
2299 | } | |
2300 | ||
570d7624 JB |
2301 | fd = -1; |
2302 | ||
2303 | #ifndef APOLLO | |
2304 | if (stat (XSTRING (filename)->data, &st) < 0 | |
349a7710 | 2305 | || (fd = open (XSTRING (filename)->data, 0)) < 0) |
570d7624 JB |
2306 | #else |
2307 | if ((fd = open (XSTRING (filename)->data, 0)) < 0 | |
2308 | || fstat (fd, &st) < 0) | |
2309 | #endif /* not APOLLO */ | |
2310 | { | |
2311 | if (fd >= 0) close (fd); | |
265a9e55 | 2312 | if (NILP (visit)) |
570d7624 JB |
2313 | report_file_error ("Opening input file", Fcons (filename, Qnil)); |
2314 | st.st_mtime = -1; | |
2315 | how_much = 0; | |
2316 | goto notfound; | |
2317 | } | |
2318 | ||
2319 | record_unwind_protect (close_file_unwind, make_number (fd)); | |
2320 | ||
be53b411 JB |
2321 | #ifdef S_IFSOCK |
2322 | /* This code will need to be changed in order to work on named | |
2323 | pipes, and it's probably just not worth it. So we should at | |
2324 | least signal an error. */ | |
2325 | if ((st.st_mode & S_IFMT) == S_IFSOCK) | |
2326 | Fsignal (Qfile_error, | |
2327 | Fcons (build_string ("reading from named pipe"), | |
2328 | Fcons (filename, Qnil))); | |
2329 | #endif | |
2330 | ||
570d7624 JB |
2331 | /* Supposedly happens on VMS. */ |
2332 | if (st.st_size < 0) | |
2333 | error ("File size is negative"); | |
be53b411 | 2334 | |
570d7624 JB |
2335 | { |
2336 | register Lisp_Object temp; | |
2337 | ||
2338 | /* Make sure point-max won't overflow after this insertion. */ | |
2339 | XSET (temp, Lisp_Int, st.st_size + Z); | |
2340 | if (st.st_size + Z != XINT (temp)) | |
2341 | error ("maximum buffer size exceeded"); | |
2342 | } | |
2343 | ||
265a9e55 | 2344 | if (NILP (visit)) |
570d7624 JB |
2345 | prepare_to_modify_buffer (point, point); |
2346 | ||
2347 | move_gap (point); | |
2348 | if (GAP_SIZE < st.st_size) | |
2349 | make_gap (st.st_size - GAP_SIZE); | |
2350 | ||
2351 | while (1) | |
2352 | { | |
2353 | int try = min (st.st_size - inserted, 64 << 10); | |
b5148e85 RS |
2354 | int this; |
2355 | ||
2356 | /* Allow quitting out of the actual I/O. */ | |
2357 | immediate_quit = 1; | |
2358 | QUIT; | |
2359 | this = read (fd, &FETCH_CHAR (point + inserted - 1) + 1, try); | |
2360 | immediate_quit = 0; | |
570d7624 JB |
2361 | |
2362 | if (this <= 0) | |
2363 | { | |
2364 | how_much = this; | |
2365 | break; | |
2366 | } | |
2367 | ||
2368 | GPT += this; | |
2369 | GAP_SIZE -= this; | |
2370 | ZV += this; | |
2371 | Z += this; | |
2372 | inserted += this; | |
2373 | } | |
2374 | ||
2375 | if (inserted > 0) | |
7d8451f1 RS |
2376 | { |
2377 | record_insert (point, inserted); | |
8d4e077b JA |
2378 | |
2379 | /* Only defined if Emacs is compiled with USE_TEXT_PROPERTIES */ | |
2380 | offset_intervals (current_buffer, point, inserted); | |
7d8451f1 RS |
2381 | MODIFF++; |
2382 | } | |
570d7624 JB |
2383 | |
2384 | close (fd); | |
2385 | ||
2386 | /* Discard the unwind protect */ | |
2387 | specpdl_ptr = specpdl + count; | |
2388 | ||
2389 | if (how_much < 0) | |
2390 | error ("IO error reading %s: %s", | |
2391 | XSTRING (filename)->data, err_str (errno)); | |
2392 | ||
2393 | notfound: | |
32f4334d | 2394 | handled: |
570d7624 | 2395 | |
265a9e55 | 2396 | if (!NILP (visit)) |
570d7624 JB |
2397 | { |
2398 | current_buffer->undo_list = Qnil; | |
2399 | #ifdef APOLLO | |
2400 | stat (XSTRING (filename)->data, &st); | |
2401 | #endif | |
2402 | current_buffer->modtime = st.st_mtime; | |
2403 | current_buffer->save_modified = MODIFF; | |
2404 | current_buffer->auto_save_modified = MODIFF; | |
2405 | XFASTINT (current_buffer->save_length) = Z - BEG; | |
2406 | #ifdef CLASH_DETECTION | |
32f4334d RS |
2407 | if (NILP (handler)) |
2408 | { | |
2409 | if (!NILP (current_buffer->filename)) | |
2410 | unlock_file (current_buffer->filename); | |
2411 | unlock_file (filename); | |
2412 | } | |
570d7624 JB |
2413 | #endif /* CLASH_DETECTION */ |
2414 | current_buffer->filename = filename; | |
2415 | /* If visiting nonexistent file, return nil. */ | |
32f4334d | 2416 | if (current_buffer->modtime == -1) |
570d7624 JB |
2417 | report_file_error ("Opening input file", Fcons (filename, Qnil)); |
2418 | } | |
2419 | ||
2420 | signal_after_change (point, 0, inserted); | |
2421 | ||
32f4334d RS |
2422 | if (!NILP (val)) |
2423 | RETURN_UNGCPRO (val); | |
9b7828a5 JB |
2424 | RETURN_UNGCPRO (Fcons (filename, |
2425 | Fcons (make_number (inserted), | |
2426 | Qnil))); | |
570d7624 JB |
2427 | } |
2428 | ||
2429 | DEFUN ("write-region", Fwrite_region, Swrite_region, 3, 5, | |
2430 | "r\nFWrite region to file: ", | |
2431 | "Write current region into specified file.\n\ | |
2432 | When called from a program, takes three arguments:\n\ | |
2433 | START, END and FILENAME. START and END are buffer positions.\n\ | |
2434 | Optional fourth argument APPEND if non-nil means\n\ | |
2435 | append to existing file contents (if any).\n\ | |
2436 | Optional fifth argument VISIT if t means\n\ | |
2437 | set the last-save-file-modtime of buffer to this file's modtime\n\ | |
2438 | and mark buffer not modified.\n\ | |
2439 | If VISIT is neither t nor nil, it means do not print\n\ | |
2440 | the \"Wrote file\" message.\n\ | |
3b7792ed RS |
2441 | If VISIT is a string, it is a second file name;\n\ |
2442 | the output goes to FILENAME, but the buffer is marked as visiting VISIT.\n\ | |
2443 | VISIT is also the file name to lock and unlock for clash detection.\n\ | |
570d7624 JB |
2444 | Kludgy feature: if START is a string, then that string is written\n\ |
2445 | to the file, instead of any buffer contents, and END is ignored.") | |
2446 | (start, end, filename, append, visit) | |
2447 | Lisp_Object start, end, filename, append, visit; | |
2448 | { | |
2449 | register int desc; | |
2450 | int failure; | |
2451 | int save_errno; | |
2452 | unsigned char *fn; | |
2453 | struct stat st; | |
2454 | int tem; | |
2455 | int count = specpdl_ptr - specpdl; | |
2456 | #ifdef VMS | |
2457 | unsigned char *fname = 0; /* If non-0, original filename (must rename) */ | |
2458 | #endif /* VMS */ | |
3eac9910 | 2459 | Lisp_Object handler; |
3b7792ed RS |
2460 | Lisp_Object visit_file = XTYPE (visit) == Lisp_String ? visit : filename; |
2461 | struct gcpro gcpro1, gcpro2, gcpro3, gcpro4; | |
570d7624 JB |
2462 | |
2463 | /* Special kludge to simplify auto-saving */ | |
265a9e55 | 2464 | if (NILP (start)) |
570d7624 JB |
2465 | { |
2466 | XFASTINT (start) = BEG; | |
2467 | XFASTINT (end) = Z; | |
2468 | } | |
2469 | else if (XTYPE (start) != Lisp_String) | |
2470 | validate_region (&start, &end); | |
2471 | ||
3b7792ed | 2472 | GCPRO4 (start, filename, visit, visit_file); |
570d7624 | 2473 | filename = Fexpand_file_name (filename, Qnil); |
570d7624 | 2474 | |
32f4334d RS |
2475 | /* If the file name has special constructs in it, |
2476 | call the corresponding file handler. */ | |
642ef245 | 2477 | handler = Ffind_file_name_handler (filename); |
3eac9910 | 2478 | |
32f4334d RS |
2479 | if (!NILP (handler)) |
2480 | { | |
2481 | Lisp_Object args[7]; | |
2482 | Lisp_Object val; | |
2483 | args[0] = handler; | |
2484 | args[1] = Qwrite_region; | |
2485 | args[2] = start; | |
2486 | args[3] = end; | |
2487 | args[4] = filename; | |
2488 | args[5] = append; | |
2489 | args[6] = visit; | |
2490 | val = Ffuncall (7, args); | |
2491 | ||
2492 | /* Do this before reporting IO error | |
2493 | to avoid a "file has changed on disk" warning on | |
2494 | next attempt to save. */ | |
3b7792ed | 2495 | if (EQ (visit, Qt) || XTYPE (visit) == Lisp_String) |
32f4334d RS |
2496 | { |
2497 | current_buffer->modtime = 0; | |
2498 | current_buffer->save_modified = MODIFF; | |
2499 | XFASTINT (current_buffer->save_length) = Z - BEG; | |
3b7792ed | 2500 | current_buffer->filename = visit_file; |
32f4334d | 2501 | } |
09121adc | 2502 | UNGCPRO; |
32f4334d RS |
2503 | return val; |
2504 | } | |
2505 | ||
570d7624 JB |
2506 | #ifdef CLASH_DETECTION |
2507 | if (!auto_saving) | |
3b7792ed | 2508 | lock_file (visit_file); |
570d7624 JB |
2509 | #endif /* CLASH_DETECTION */ |
2510 | ||
09121adc | 2511 | fn = XSTRING (filename)->data; |
570d7624 | 2512 | desc = -1; |
265a9e55 | 2513 | if (!NILP (append)) |
570d7624 JB |
2514 | desc = open (fn, O_WRONLY); |
2515 | ||
2516 | if (desc < 0) | |
2517 | #ifdef VMS | |
2518 | if (auto_saving) /* Overwrite any previous version of autosave file */ | |
2519 | { | |
2520 | vms_truncate (fn); /* if fn exists, truncate to zero length */ | |
2521 | desc = open (fn, O_RDWR); | |
2522 | if (desc < 0) | |
2523 | desc = creat_copy_attrs (XTYPE (current_buffer->filename) == Lisp_String | |
b72dea2a JB |
2524 | ? XSTRING (current_buffer->filename)->data : 0, |
2525 | fn); | |
570d7624 JB |
2526 | } |
2527 | else /* Write to temporary name and rename if no errors */ | |
2528 | { | |
2529 | Lisp_Object temp_name; | |
2530 | temp_name = Ffile_name_directory (filename); | |
2531 | ||
265a9e55 | 2532 | if (!NILP (temp_name)) |
570d7624 JB |
2533 | { |
2534 | temp_name = Fmake_temp_name (concat2 (temp_name, | |
2535 | build_string ("$$SAVE$$"))); | |
2536 | fname = XSTRING (filename)->data; | |
2537 | fn = XSTRING (temp_name)->data; | |
2538 | desc = creat_copy_attrs (fname, fn); | |
2539 | if (desc < 0) | |
2540 | { | |
2541 | /* If we can't open the temporary file, try creating a new | |
2542 | version of the original file. VMS "creat" creates a | |
2543 | new version rather than truncating an existing file. */ | |
2544 | fn = fname; | |
2545 | fname = 0; | |
2546 | desc = creat (fn, 0666); | |
2547 | #if 0 /* This can clobber an existing file and fail to replace it, | |
2548 | if the user runs out of space. */ | |
2549 | if (desc < 0) | |
2550 | { | |
2551 | /* We can't make a new version; | |
2552 | try to truncate and rewrite existing version if any. */ | |
2553 | vms_truncate (fn); | |
2554 | desc = open (fn, O_RDWR); | |
2555 | } | |
2556 | #endif | |
2557 | } | |
2558 | } | |
2559 | else | |
2560 | desc = creat (fn, 0666); | |
2561 | } | |
2562 | #else /* not VMS */ | |
2563 | desc = creat (fn, auto_saving ? auto_save_mode_bits : 0666); | |
2564 | #endif /* not VMS */ | |
2565 | ||
09121adc RS |
2566 | UNGCPRO; |
2567 | ||
570d7624 JB |
2568 | if (desc < 0) |
2569 | { | |
2570 | #ifdef CLASH_DETECTION | |
2571 | save_errno = errno; | |
3b7792ed | 2572 | if (!auto_saving) unlock_file (visit_file); |
570d7624 JB |
2573 | errno = save_errno; |
2574 | #endif /* CLASH_DETECTION */ | |
2575 | report_file_error ("Opening output file", Fcons (filename, Qnil)); | |
2576 | } | |
2577 | ||
2578 | record_unwind_protect (close_file_unwind, make_number (desc)); | |
2579 | ||
265a9e55 | 2580 | if (!NILP (append)) |
570d7624 JB |
2581 | if (lseek (desc, 0, 2) < 0) |
2582 | { | |
2583 | #ifdef CLASH_DETECTION | |
3b7792ed | 2584 | if (!auto_saving) unlock_file (visit_file); |
570d7624 JB |
2585 | #endif /* CLASH_DETECTION */ |
2586 | report_file_error ("Lseek error", Fcons (filename, Qnil)); | |
2587 | } | |
2588 | ||
2589 | #ifdef VMS | |
2590 | /* | |
2591 | * Kludge Warning: The VMS C RTL likes to insert carriage returns | |
2592 | * if we do writes that don't end with a carriage return. Furthermore | |
2593 | * it cannot handle writes of more then 16K. The modified | |
2594 | * version of "sys_write" in SYSDEP.C (see comment there) copes with | |
2595 | * this EXCEPT for the last record (iff it doesn't end with a carriage | |
2596 | * return). This implies that if your buffer doesn't end with a carriage | |
2597 | * return, you get one free... tough. However it also means that if | |
2598 | * we make two calls to sys_write (a la the following code) you can | |
2599 | * get one at the gap as well. The easiest way to fix this (honest) | |
2600 | * is to move the gap to the next newline (or the end of the buffer). | |
2601 | * Thus this change. | |
2602 | * | |
2603 | * Yech! | |
2604 | */ | |
2605 | if (GPT > BEG && GPT_ADDR[-1] != '\n') | |
2606 | move_gap (find_next_newline (GPT, 1)); | |
2607 | #endif | |
2608 | ||
2609 | failure = 0; | |
2610 | immediate_quit = 1; | |
2611 | ||
2612 | if (XTYPE (start) == Lisp_String) | |
2613 | { | |
2614 | failure = 0 > e_write (desc, XSTRING (start)->data, | |
2615 | XSTRING (start)->size); | |
2616 | save_errno = errno; | |
2617 | } | |
2618 | else if (XINT (start) != XINT (end)) | |
2619 | { | |
2620 | if (XINT (start) < GPT) | |
2621 | { | |
2622 | register int end1 = XINT (end); | |
2623 | tem = XINT (start); | |
2624 | failure = 0 > e_write (desc, &FETCH_CHAR (tem), | |
2625 | min (GPT, end1) - tem); | |
2626 | save_errno = errno; | |
2627 | } | |
2628 | ||
2629 | if (XINT (end) > GPT && !failure) | |
2630 | { | |
2631 | tem = XINT (start); | |
2632 | tem = max (tem, GPT); | |
2633 | failure = 0 > e_write (desc, &FETCH_CHAR (tem), XINT (end) - tem); | |
2634 | save_errno = errno; | |
2635 | } | |
2636 | } | |
2637 | ||
2638 | immediate_quit = 0; | |
2639 | ||
2640 | #ifndef USG | |
2641 | #ifndef VMS | |
2642 | #ifndef BSD4_1 | |
570d7624 JB |
2643 | /* Note fsync appears to change the modtime on BSD4.2 (both vax and sun). |
2644 | Disk full in NFS may be reported here. */ | |
2645 | if (fsync (desc) < 0) | |
2646 | failure = 1, save_errno = errno; | |
2647 | #endif | |
2648 | #endif | |
570d7624 JB |
2649 | #endif |
2650 | ||
2651 | /* Spurious "file has changed on disk" warnings have been | |
2652 | observed on Suns as well. | |
2653 | It seems that `close' can change the modtime, under nfs. | |
2654 | ||
2655 | (This has supposedly been fixed in Sunos 4, | |
2656 | but who knows about all the other machines with NFS?) */ | |
2657 | #if 0 | |
2658 | ||
2659 | /* On VMS and APOLLO, must do the stat after the close | |
2660 | since closing changes the modtime. */ | |
2661 | #ifndef VMS | |
2662 | #ifndef APOLLO | |
2663 | /* Recall that #if defined does not work on VMS. */ | |
2664 | #define FOO | |
2665 | fstat (desc, &st); | |
2666 | #endif | |
2667 | #endif | |
2668 | #endif | |
2669 | ||
2670 | /* NFS can report a write failure now. */ | |
2671 | if (close (desc) < 0) | |
2672 | failure = 1, save_errno = errno; | |
2673 | ||
2674 | #ifdef VMS | |
2675 | /* If we wrote to a temporary name and had no errors, rename to real name. */ | |
2676 | if (fname) | |
2677 | { | |
2678 | if (!failure) | |
2679 | failure = (rename (fn, fname) != 0), save_errno = errno; | |
2680 | fn = fname; | |
2681 | } | |
2682 | #endif /* VMS */ | |
2683 | ||
2684 | #ifndef FOO | |
2685 | stat (fn, &st); | |
2686 | #endif | |
2687 | /* Discard the unwind protect */ | |
2688 | specpdl_ptr = specpdl + count; | |
2689 | ||
2690 | #ifdef CLASH_DETECTION | |
2691 | if (!auto_saving) | |
3b7792ed | 2692 | unlock_file (visit_file); |
570d7624 JB |
2693 | #endif /* CLASH_DETECTION */ |
2694 | ||
2695 | /* Do this before reporting IO error | |
2696 | to avoid a "file has changed on disk" warning on | |
2697 | next attempt to save. */ | |
3b7792ed | 2698 | if (EQ (visit, Qt) || XTYPE (visit) == Lisp_String) |
570d7624 JB |
2699 | current_buffer->modtime = st.st_mtime; |
2700 | ||
2701 | if (failure) | |
2702 | error ("IO error writing %s: %s", fn, err_str (save_errno)); | |
2703 | ||
3b7792ed | 2704 | if (EQ (visit, Qt) || XTYPE (visit) == Lisp_String) |
570d7624 JB |
2705 | { |
2706 | current_buffer->save_modified = MODIFF; | |
2707 | XFASTINT (current_buffer->save_length) = Z - BEG; | |
3b7792ed | 2708 | current_buffer->filename = visit_file; |
570d7624 | 2709 | } |
265a9e55 | 2710 | else if (!NILP (visit)) |
570d7624 JB |
2711 | return Qnil; |
2712 | ||
2713 | if (!auto_saving) | |
3b7792ed | 2714 | message ("Wrote %s", XSTRING (visit_file)->data); |
570d7624 JB |
2715 | |
2716 | return Qnil; | |
2717 | } | |
2718 | ||
2719 | int | |
2720 | e_write (desc, addr, len) | |
2721 | int desc; | |
2722 | register char *addr; | |
2723 | register int len; | |
2724 | { | |
2725 | char buf[16 * 1024]; | |
2726 | register char *p, *end; | |
2727 | ||
2728 | if (!EQ (current_buffer->selective_display, Qt)) | |
2729 | return write (desc, addr, len) - len; | |
2730 | else | |
2731 | { | |
2732 | p = buf; | |
2733 | end = p + sizeof buf; | |
2734 | while (len--) | |
2735 | { | |
2736 | if (p == end) | |
2737 | { | |
2738 | if (write (desc, buf, sizeof buf) != sizeof buf) | |
2739 | return -1; | |
2740 | p = buf; | |
2741 | } | |
2742 | *p = *addr++; | |
2743 | if (*p++ == '\015') | |
2744 | p[-1] = '\n'; | |
2745 | } | |
2746 | if (p != buf) | |
2747 | if (write (desc, buf, p - buf) != p - buf) | |
2748 | return -1; | |
2749 | } | |
2750 | return 0; | |
2751 | } | |
2752 | ||
2753 | DEFUN ("verify-visited-file-modtime", Fverify_visited_file_modtime, | |
2754 | Sverify_visited_file_modtime, 1, 1, 0, | |
2755 | "Return t if last mod time of BUF's visited file matches what BUF records.\n\ | |
2756 | This means that the file has not been changed since it was visited or saved.") | |
2757 | (buf) | |
2758 | Lisp_Object buf; | |
2759 | { | |
2760 | struct buffer *b; | |
2761 | struct stat st; | |
32f4334d | 2762 | Lisp_Object handler; |
570d7624 JB |
2763 | |
2764 | CHECK_BUFFER (buf, 0); | |
2765 | b = XBUFFER (buf); | |
2766 | ||
2767 | if (XTYPE (b->filename) != Lisp_String) return Qt; | |
2768 | if (b->modtime == 0) return Qt; | |
2769 | ||
32f4334d RS |
2770 | /* If the file name has special constructs in it, |
2771 | call the corresponding file handler. */ | |
642ef245 | 2772 | handler = Ffind_file_name_handler (b->filename); |
32f4334d | 2773 | if (!NILP (handler)) |
09121adc | 2774 | return call2 (handler, Qverify_visited_file_modtime, buf); |
32f4334d | 2775 | |
570d7624 JB |
2776 | if (stat (XSTRING (b->filename)->data, &st) < 0) |
2777 | { | |
2778 | /* If the file doesn't exist now and didn't exist before, | |
2779 | we say that it isn't modified, provided the error is a tame one. */ | |
2780 | if (errno == ENOENT || errno == EACCES || errno == ENOTDIR) | |
2781 | st.st_mtime = -1; | |
2782 | else | |
2783 | st.st_mtime = 0; | |
2784 | } | |
2785 | if (st.st_mtime == b->modtime | |
2786 | /* If both are positive, accept them if they are off by one second. */ | |
2787 | || (st.st_mtime > 0 && b->modtime > 0 | |
2788 | && (st.st_mtime == b->modtime + 1 | |
2789 | || st.st_mtime == b->modtime - 1))) | |
2790 | return Qt; | |
2791 | return Qnil; | |
2792 | } | |
2793 | ||
2794 | DEFUN ("clear-visited-file-modtime", Fclear_visited_file_modtime, | |
2795 | Sclear_visited_file_modtime, 0, 0, 0, | |
2796 | "Clear out records of last mod time of visited file.\n\ | |
2797 | Next attempt to save will certainly not complain of a discrepancy.") | |
2798 | () | |
2799 | { | |
2800 | current_buffer->modtime = 0; | |
2801 | return Qnil; | |
2802 | } | |
2803 | ||
2804 | DEFUN ("set-visited-file-modtime", Fset_visited_file_modtime, | |
2805 | Sset_visited_file_modtime, 0, 0, 0, | |
2806 | "Update buffer's recorded modification time from the visited file's time.\n\ | |
2807 | Useful if the buffer was not read from the file normally\n\ | |
2808 | or if the file itself has been changed for some known benign reason.") | |
2809 | () | |
2810 | { | |
2811 | register Lisp_Object filename; | |
2812 | struct stat st; | |
3eac9910 | 2813 | Lisp_Object handler; |
570d7624 JB |
2814 | |
2815 | filename = Fexpand_file_name (current_buffer->filename, Qnil); | |
32f4334d RS |
2816 | |
2817 | /* If the file name has special constructs in it, | |
2818 | call the corresponding file handler. */ | |
642ef245 | 2819 | handler = Ffind_file_name_handler (filename); |
32f4334d RS |
2820 | if (!NILP (handler)) |
2821 | current_buffer->modtime = 0; | |
570d7624 | 2822 | |
32f4334d | 2823 | else if (stat (XSTRING (filename)->data, &st) >= 0) |
570d7624 JB |
2824 | current_buffer->modtime = st.st_mtime; |
2825 | ||
2826 | return Qnil; | |
2827 | } | |
2828 | \f | |
2829 | Lisp_Object | |
2830 | auto_save_error () | |
2831 | { | |
2832 | unsigned char *name = XSTRING (current_buffer->name)->data; | |
2833 | ||
2834 | ring_bell (); | |
2835 | message ("Autosaving...error for %s", name); | |
de49a6d3 | 2836 | Fsleep_for (make_number (1), Qnil); |
570d7624 | 2837 | message ("Autosaving...error!for %s", name); |
de49a6d3 | 2838 | Fsleep_for (make_number (1), Qnil); |
570d7624 | 2839 | message ("Autosaving...error for %s", name); |
de49a6d3 | 2840 | Fsleep_for (make_number (1), Qnil); |
570d7624 JB |
2841 | return Qnil; |
2842 | } | |
2843 | ||
2844 | Lisp_Object | |
2845 | auto_save_1 () | |
2846 | { | |
2847 | unsigned char *fn; | |
2848 | struct stat st; | |
2849 | ||
2850 | /* Get visited file's mode to become the auto save file's mode. */ | |
2851 | if (stat (XSTRING (current_buffer->filename)->data, &st) >= 0) | |
2852 | /* But make sure we can overwrite it later! */ | |
2853 | auto_save_mode_bits = st.st_mode | 0600; | |
2854 | else | |
2855 | auto_save_mode_bits = 0666; | |
2856 | ||
2857 | return | |
2858 | Fwrite_region (Qnil, Qnil, | |
2859 | current_buffer->auto_save_file_name, | |
2860 | Qnil, Qlambda); | |
2861 | } | |
2862 | ||
2863 | DEFUN ("do-auto-save", Fdo_auto_save, Sdo_auto_save, 0, 2, "", | |
2864 | "Auto-save all buffers that need it.\n\ | |
2865 | This is all buffers that have auto-saving enabled\n\ | |
2866 | and are changed since last auto-saved.\n\ | |
2867 | Auto-saving writes the buffer into a file\n\ | |
2868 | so that your editing is not lost if the system crashes.\n\ | |
2869 | This file is not the file you visited; that changes only when you save.\n\n\ | |
2870 | Non-nil first argument means do not print any message if successful.\n\ | |
4746118a | 2871 | Non-nil second argument means save only current buffer.") |
570d7624 JB |
2872 | (nomsg) |
2873 | Lisp_Object nomsg; | |
2874 | { | |
2875 | struct buffer *old = current_buffer, *b; | |
2876 | Lisp_Object tail, buf; | |
2877 | int auto_saved = 0; | |
2878 | char *omessage = echo_area_glyphs; | |
2879 | extern minibuf_level; | |
2880 | ||
2881 | /* No GCPRO needed, because (when it matters) all Lisp_Object variables | |
2882 | point to non-strings reached from Vbuffer_alist. */ | |
2883 | ||
2884 | auto_saving = 1; | |
2885 | if (minibuf_level) | |
2886 | nomsg = Qt; | |
2887 | ||
2888 | /* Vrun_hooks is nil before emacs is dumped, and inc-vers.el will | |
2889 | eventually call do-auto-save, so don't err here in that case. */ | |
265a9e55 | 2890 | if (!NILP (Vrun_hooks)) |
570d7624 JB |
2891 | call1 (Vrun_hooks, intern ("auto-save-hook")); |
2892 | ||
2893 | for (tail = Vbuffer_alist; XGCTYPE (tail) == Lisp_Cons; | |
2894 | tail = XCONS (tail)->cdr) | |
2895 | { | |
2896 | buf = XCONS (XCONS (tail)->car)->cdr; | |
2897 | b = XBUFFER (buf); | |
2898 | /* Check for auto save enabled | |
2899 | and file changed since last auto save | |
2900 | and file changed since last real save. */ | |
2901 | if (XTYPE (b->auto_save_file_name) == Lisp_String | |
2902 | && b->save_modified < BUF_MODIFF (b) | |
2903 | && b->auto_save_modified < BUF_MODIFF (b)) | |
2904 | { | |
2905 | if ((XFASTINT (b->save_length) * 10 | |
2906 | > (BUF_Z (b) - BUF_BEG (b)) * 13) | |
2907 | /* A short file is likely to change a large fraction; | |
2908 | spare the user annoying messages. */ | |
2909 | && XFASTINT (b->save_length) > 5000 | |
2910 | /* These messages are frequent and annoying for `*mail*'. */ | |
2911 | && !EQ (b->filename, Qnil)) | |
2912 | { | |
2913 | /* It has shrunk too much; turn off auto-saving here. */ | |
2914 | message ("Buffer %s has shrunk a lot; auto save turned off there", | |
2915 | XSTRING (b->name)->data); | |
2916 | /* User can reenable saving with M-x auto-save. */ | |
2917 | b->auto_save_file_name = Qnil; | |
2918 | /* Prevent warning from repeating if user does so. */ | |
2919 | XFASTINT (b->save_length) = 0; | |
2fd3c56b | 2920 | Fsleep_for (make_number (1), Qnil); |
570d7624 JB |
2921 | continue; |
2922 | } | |
2923 | set_buffer_internal (b); | |
265a9e55 | 2924 | if (!auto_saved && NILP (nomsg)) |
570d7624 JB |
2925 | message1 ("Auto-saving..."); |
2926 | internal_condition_case (auto_save_1, Qt, auto_save_error); | |
2927 | auto_saved++; | |
2928 | b->auto_save_modified = BUF_MODIFF (b); | |
2929 | XFASTINT (current_buffer->save_length) = Z - BEG; | |
2930 | set_buffer_internal (old); | |
2931 | } | |
2932 | } | |
2933 | ||
b67f2ca5 RS |
2934 | /* Prevent another auto save till enough input events come in. */ |
2935 | record_auto_save (); | |
570d7624 | 2936 | |
265a9e55 | 2937 | if (auto_saved && NILP (nomsg)) |
570d7624 JB |
2938 | message1 (omessage ? omessage : "Auto-saving...done"); |
2939 | ||
2940 | auto_saving = 0; | |
2941 | return Qnil; | |
2942 | } | |
2943 | ||
2944 | DEFUN ("set-buffer-auto-saved", Fset_buffer_auto_saved, | |
2945 | Sset_buffer_auto_saved, 0, 0, 0, | |
2946 | "Mark current buffer as auto-saved with its current text.\n\ | |
2947 | No auto-save file will be written until the buffer changes again.") | |
2948 | () | |
2949 | { | |
2950 | current_buffer->auto_save_modified = MODIFF; | |
2951 | XFASTINT (current_buffer->save_length) = Z - BEG; | |
2952 | return Qnil; | |
2953 | } | |
2954 | ||
2955 | DEFUN ("recent-auto-save-p", Frecent_auto_save_p, Srecent_auto_save_p, | |
2956 | 0, 0, 0, | |
2957 | "Return t if buffer has been auto-saved since last read in or saved.") | |
2958 | () | |
2959 | { | |
2960 | return (current_buffer->save_modified < current_buffer->auto_save_modified) ? Qt : Qnil; | |
2961 | } | |
2962 | \f | |
2963 | /* Reading and completing file names */ | |
2964 | extern Lisp_Object Ffile_name_completion (), Ffile_name_all_completions (); | |
2965 | ||
2966 | DEFUN ("read-file-name-internal", Fread_file_name_internal, Sread_file_name_internal, | |
2967 | 3, 3, 0, | |
2968 | "Internal subroutine for read-file-name. Do not call this.") | |
2969 | (string, dir, action) | |
2970 | Lisp_Object string, dir, action; | |
2971 | /* action is nil for complete, t for return list of completions, | |
2972 | lambda for verify final value */ | |
2973 | { | |
2974 | Lisp_Object name, specdir, realdir, val, orig_string; | |
09121adc RS |
2975 | int changed; |
2976 | struct gcpro gcpro1, gcpro2, gcpro3, gcpro4; | |
2977 | ||
2978 | realdir = dir; | |
2979 | name = string; | |
2980 | orig_string = Qnil; | |
2981 | specdir = Qnil; | |
2982 | changed = 0; | |
2983 | /* No need to protect ACTION--we only compare it with t and nil. */ | |
2984 | GCPRO4 (string, realdir, name, specdir); | |
570d7624 JB |
2985 | |
2986 | if (XSTRING (string)->size == 0) | |
2987 | { | |
570d7624 | 2988 | if (EQ (action, Qlambda)) |
09121adc RS |
2989 | { |
2990 | UNGCPRO; | |
2991 | return Qnil; | |
2992 | } | |
570d7624 JB |
2993 | } |
2994 | else | |
2995 | { | |
2996 | orig_string = string; | |
2997 | string = Fsubstitute_in_file_name (string); | |
09121adc | 2998 | changed = NILP (Fstring_equal (string, orig_string)); |
570d7624 | 2999 | name = Ffile_name_nondirectory (string); |
09121adc RS |
3000 | val = Ffile_name_directory (string); |
3001 | if (! NILP (val)) | |
3002 | realdir = Fexpand_file_name (val, realdir); | |
570d7624 JB |
3003 | } |
3004 | ||
265a9e55 | 3005 | if (NILP (action)) |
570d7624 JB |
3006 | { |
3007 | specdir = Ffile_name_directory (string); | |
3008 | val = Ffile_name_completion (name, realdir); | |
09121adc | 3009 | UNGCPRO; |
570d7624 JB |
3010 | if (XTYPE (val) != Lisp_String) |
3011 | { | |
09121adc | 3012 | if (changed) |
570d7624 | 3013 | return string; |
09121adc | 3014 | return val; |
570d7624 JB |
3015 | } |
3016 | ||
265a9e55 | 3017 | if (!NILP (specdir)) |
570d7624 JB |
3018 | val = concat2 (specdir, val); |
3019 | #ifndef VMS | |
3020 | { | |
3021 | register unsigned char *old, *new; | |
3022 | register int n; | |
3023 | int osize, count; | |
3024 | ||
3025 | osize = XSTRING (val)->size; | |
3026 | /* Quote "$" as "$$" to get it past substitute-in-file-name */ | |
3027 | for (n = osize, count = 0, old = XSTRING (val)->data; n > 0; n--) | |
3028 | if (*old++ == '$') count++; | |
3029 | if (count > 0) | |
3030 | { | |
3031 | old = XSTRING (val)->data; | |
3032 | val = Fmake_string (make_number (osize + count), make_number (0)); | |
3033 | new = XSTRING (val)->data; | |
3034 | for (n = osize; n > 0; n--) | |
3035 | if (*old != '$') | |
3036 | *new++ = *old++; | |
3037 | else | |
3038 | { | |
3039 | *new++ = '$'; | |
3040 | *new++ = '$'; | |
3041 | old++; | |
3042 | } | |
3043 | } | |
3044 | } | |
3045 | #endif /* Not VMS */ | |
09121adc | 3046 | return val; |
570d7624 | 3047 | } |
09121adc | 3048 | UNGCPRO; |
570d7624 JB |
3049 | |
3050 | if (EQ (action, Qt)) | |
3051 | return Ffile_name_all_completions (name, realdir); | |
3052 | /* Only other case actually used is ACTION = lambda */ | |
3053 | #ifdef VMS | |
3054 | /* Supposedly this helps commands such as `cd' that read directory names, | |
3055 | but can someone explain how it helps them? -- RMS */ | |
3056 | if (XSTRING (name)->size == 0) | |
3057 | return Qt; | |
3058 | #endif /* VMS */ | |
3059 | return Ffile_exists_p (string); | |
3060 | } | |
3061 | ||
3062 | DEFUN ("read-file-name", Fread_file_name, Sread_file_name, 1, 5, 0, | |
3063 | "Read file name, prompting with PROMPT and completing in directory DIR.\n\ | |
3064 | Value is not expanded---you must call `expand-file-name' yourself.\n\ | |
3065 | Default name to DEFAULT if user enters a null string.\n\ | |
3066 | (If DEFAULT is omitted, the visited file name is used.)\n\ | |
3067 | Fourth arg MUSTMATCH non-nil means require existing file's name.\n\ | |
3068 | Non-nil and non-t means also require confirmation after completion.\n\ | |
3069 | Fifth arg INITIAL specifies text to start with.\n\ | |
3070 | DIR defaults to current buffer's directory default.") | |
3071 | (prompt, dir, defalt, mustmatch, initial) | |
3072 | Lisp_Object prompt, dir, defalt, mustmatch, initial; | |
3073 | { | |
85b5fe07 | 3074 | Lisp_Object val, insdef, insdef1, tem; |
570d7624 JB |
3075 | struct gcpro gcpro1, gcpro2; |
3076 | register char *homedir; | |
3077 | int count; | |
3078 | ||
265a9e55 | 3079 | if (NILP (dir)) |
570d7624 | 3080 | dir = current_buffer->directory; |
265a9e55 | 3081 | if (NILP (defalt)) |
570d7624 JB |
3082 | defalt = current_buffer->filename; |
3083 | ||
3084 | /* If dir starts with user's homedir, change that to ~. */ | |
3085 | homedir = (char *) egetenv ("HOME"); | |
3086 | if (homedir != 0 | |
3087 | && XTYPE (dir) == Lisp_String | |
3088 | && !strncmp (homedir, XSTRING (dir)->data, strlen (homedir)) | |
3089 | && XSTRING (dir)->data[strlen (homedir)] == '/') | |
3090 | { | |
3091 | dir = make_string (XSTRING (dir)->data + strlen (homedir) - 1, | |
3092 | XSTRING (dir)->size - strlen (homedir) + 1); | |
3093 | XSTRING (dir)->data[0] = '~'; | |
3094 | } | |
3095 | ||
3096 | if (insert_default_directory) | |
3097 | { | |
3098 | insdef = dir; | |
85b5fe07 | 3099 | insdef1 = dir; |
265a9e55 | 3100 | if (!NILP (initial)) |
570d7624 | 3101 | { |
15c65264 | 3102 | Lisp_Object args[2], pos; |
570d7624 JB |
3103 | |
3104 | args[0] = insdef; | |
3105 | args[1] = initial; | |
3106 | insdef = Fconcat (2, args); | |
509b05ed | 3107 | pos = make_number (XSTRING (dir)->size); |
85b5fe07 | 3108 | insdef1 = Fcons (insdef, pos); |
570d7624 | 3109 | } |
570d7624 JB |
3110 | } |
3111 | else | |
85b5fe07 | 3112 | insdef = Qnil, insdef1 = Qnil; |
570d7624 JB |
3113 | |
3114 | #ifdef VMS | |
3115 | count = specpdl_ptr - specpdl; | |
3116 | specbind (intern ("completion-ignore-case"), Qt); | |
3117 | #endif | |
3118 | ||
3119 | GCPRO2 (insdef, defalt); | |
3120 | val = Fcompleting_read (prompt, intern ("read-file-name-internal"), | |
85b5fe07 | 3121 | dir, mustmatch, insdef1, |
15c65264 | 3122 | Qfile_name_history); |
570d7624 JB |
3123 | |
3124 | #ifdef VMS | |
3125 | unbind_to (count, Qnil); | |
3126 | #endif | |
3127 | ||
3128 | UNGCPRO; | |
265a9e55 | 3129 | if (NILP (val)) |
570d7624 JB |
3130 | error ("No file name specified"); |
3131 | tem = Fstring_equal (val, insdef); | |
265a9e55 | 3132 | if (!NILP (tem) && !NILP (defalt)) |
570d7624 JB |
3133 | return defalt; |
3134 | return Fsubstitute_in_file_name (val); | |
3135 | } | |
3136 | ||
3137 | #if 0 /* Old version */ | |
3138 | DEFUN ("read-file-name", Fread_file_name, Sread_file_name, 1, 5, 0, | |
3139 | "Read file name, prompting with PROMPT and completing in directory DIR.\n\ | |
3140 | Value is not expanded---you must call `expand-file-name' yourself.\n\ | |
3141 | Default name to DEFAULT if user enters a null string.\n\ | |
3142 | (If DEFAULT is omitted, the visited file name is used.)\n\ | |
3143 | Fourth arg MUSTMATCH non-nil means require existing file's name.\n\ | |
3144 | Non-nil and non-t means also require confirmation after completion.\n\ | |
3145 | Fifth arg INITIAL specifies text to start with.\n\ | |
3146 | DIR defaults to current buffer's directory default.") | |
3147 | (prompt, dir, defalt, mustmatch, initial) | |
3148 | Lisp_Object prompt, dir, defalt, mustmatch, initial; | |
3149 | { | |
3150 | Lisp_Object val, insdef, tem; | |
3151 | struct gcpro gcpro1, gcpro2; | |
3152 | register char *homedir; | |
3153 | int count; | |
3154 | ||
265a9e55 | 3155 | if (NILP (dir)) |
570d7624 | 3156 | dir = current_buffer->directory; |
265a9e55 | 3157 | if (NILP (defalt)) |
570d7624 JB |
3158 | defalt = current_buffer->filename; |
3159 | ||
3160 | /* If dir starts with user's homedir, change that to ~. */ | |
3161 | homedir = (char *) egetenv ("HOME"); | |
3162 | if (homedir != 0 | |
3163 | && XTYPE (dir) == Lisp_String | |
3164 | && !strncmp (homedir, XSTRING (dir)->data, strlen (homedir)) | |
3165 | && XSTRING (dir)->data[strlen (homedir)] == '/') | |
3166 | { | |
3167 | dir = make_string (XSTRING (dir)->data + strlen (homedir) - 1, | |
3168 | XSTRING (dir)->size - strlen (homedir) + 1); | |
3169 | XSTRING (dir)->data[0] = '~'; | |
3170 | } | |
3171 | ||
265a9e55 | 3172 | if (!NILP (initial)) |
570d7624 JB |
3173 | insdef = initial; |
3174 | else if (insert_default_directory) | |
3175 | insdef = dir; | |
3176 | else | |
3177 | insdef = build_string (""); | |
3178 | ||
3179 | #ifdef VMS | |
3180 | count = specpdl_ptr - specpdl; | |
3181 | specbind (intern ("completion-ignore-case"), Qt); | |
3182 | #endif | |
3183 | ||
3184 | GCPRO2 (insdef, defalt); | |
3185 | val = Fcompleting_read (prompt, intern ("read-file-name-internal"), | |
3186 | dir, mustmatch, | |
15c65264 RS |
3187 | insert_default_directory ? insdef : Qnil, |
3188 | Qfile_name_history); | |
570d7624 JB |
3189 | |
3190 | #ifdef VMS | |
3191 | unbind_to (count, Qnil); | |
3192 | #endif | |
3193 | ||
3194 | UNGCPRO; | |
265a9e55 | 3195 | if (NILP (val)) |
570d7624 JB |
3196 | error ("No file name specified"); |
3197 | tem = Fstring_equal (val, insdef); | |
265a9e55 | 3198 | if (!NILP (tem) && !NILP (defalt)) |
570d7624 JB |
3199 | return defalt; |
3200 | return Fsubstitute_in_file_name (val); | |
3201 | } | |
3202 | #endif /* Old version */ | |
3203 | \f | |
3204 | syms_of_fileio () | |
3205 | { | |
0bf2eed2 RS |
3206 | Qexpand_file_name = intern ("expand-file-name"); |
3207 | Qdirectory_file_name = intern ("directory-file-name"); | |
3208 | Qfile_name_directory = intern ("file-name-directory"); | |
3209 | Qfile_name_nondirectory = intern ("file-name-nondirectory"); | |
642ef245 | 3210 | Qunhandled_file_name_directory = intern ("unhandled-file-name-directory"); |
0bf2eed2 | 3211 | Qfile_name_as_directory = intern ("file-name-as-directory"); |
32f4334d RS |
3212 | Qcopy_file = intern ("copy-file"); |
3213 | Qmake_directory = intern ("make-directory"); | |
3214 | Qdelete_directory = intern ("delete-directory"); | |
3215 | Qdelete_file = intern ("delete-file"); | |
3216 | Qrename_file = intern ("rename-file"); | |
3217 | Qadd_name_to_file = intern ("add-name-to-file"); | |
3218 | Qmake_symbolic_link = intern ("make-symbolic-link"); | |
3219 | Qfile_exists_p = intern ("file-exists-p"); | |
3220 | Qfile_executable_p = intern ("file-executable-p"); | |
3221 | Qfile_readable_p = intern ("file-readable-p"); | |
3222 | Qfile_symlink_p = intern ("file-symlink-p"); | |
3223 | Qfile_writable_p = intern ("file-writable-p"); | |
3224 | Qfile_directory_p = intern ("file-directory-p"); | |
3225 | Qfile_accessible_directory_p = intern ("file-accessible-directory-p"); | |
3226 | Qfile_modes = intern ("file-modes"); | |
3227 | Qset_file_modes = intern ("set-file-modes"); | |
3228 | Qfile_newer_than_file_p = intern ("file-newer-than-file-p"); | |
3229 | Qinsert_file_contents = intern ("insert-file-contents"); | |
3230 | Qwrite_region = intern ("write-region"); | |
3231 | Qverify_visited_file_modtime = intern ("verify-visited-file-modtime"); | |
3232 | ||
642ef245 JB |
3233 | staticpro (&Qexpand_file_name); |
3234 | staticpro (&Qdirectory_file_name); | |
3235 | staticpro (&Qfile_name_directory); | |
3236 | staticpro (&Qfile_name_nondirectory); | |
3237 | staticpro (&Qunhandled_file_name_directory); | |
3238 | staticpro (&Qfile_name_as_directory); | |
15c65264 RS |
3239 | staticpro (&Qcopy_file); |
3240 | staticpro (&Qmake_directory); | |
3241 | staticpro (&Qdelete_directory); | |
3242 | staticpro (&Qdelete_file); | |
3243 | staticpro (&Qrename_file); | |
3244 | staticpro (&Qadd_name_to_file); | |
3245 | staticpro (&Qmake_symbolic_link); | |
3246 | staticpro (&Qfile_exists_p); | |
3247 | staticpro (&Qfile_executable_p); | |
3248 | staticpro (&Qfile_readable_p); | |
3249 | staticpro (&Qfile_symlink_p); | |
3250 | staticpro (&Qfile_writable_p); | |
3251 | staticpro (&Qfile_directory_p); | |
3252 | staticpro (&Qfile_accessible_directory_p); | |
3253 | staticpro (&Qfile_modes); | |
3254 | staticpro (&Qset_file_modes); | |
3255 | staticpro (&Qfile_newer_than_file_p); | |
3256 | staticpro (&Qinsert_file_contents); | |
3257 | staticpro (&Qwrite_region); | |
3258 | staticpro (&Qverify_visited_file_modtime); | |
642ef245 JB |
3259 | |
3260 | Qfile_name_history = intern ("file-name-history"); | |
3261 | Fset (Qfile_name_history, Qnil); | |
15c65264 RS |
3262 | staticpro (&Qfile_name_history); |
3263 | ||
570d7624 JB |
3264 | Qfile_error = intern ("file-error"); |
3265 | staticpro (&Qfile_error); | |
3266 | Qfile_already_exists = intern("file-already-exists"); | |
3267 | staticpro (&Qfile_already_exists); | |
3268 | ||
3269 | Fput (Qfile_error, Qerror_conditions, | |
3270 | Fcons (Qfile_error, Fcons (Qerror, Qnil))); | |
3271 | Fput (Qfile_error, Qerror_message, | |
3272 | build_string ("File error")); | |
3273 | ||
3274 | Fput (Qfile_already_exists, Qerror_conditions, | |
3275 | Fcons (Qfile_already_exists, | |
3276 | Fcons (Qfile_error, Fcons (Qerror, Qnil)))); | |
3277 | Fput (Qfile_already_exists, Qerror_message, | |
3278 | build_string ("File already exists")); | |
3279 | ||
3280 | DEFVAR_BOOL ("insert-default-directory", &insert_default_directory, | |
3281 | "*Non-nil means when reading a filename start with default dir in minibuffer."); | |
3282 | insert_default_directory = 1; | |
3283 | ||
3284 | DEFVAR_BOOL ("vms-stmlf-recfm", &vms_stmlf_recfm, | |
3285 | "*Non-nil means write new files with record format `stmlf'.\n\ | |
3286 | nil means use format `var'. This variable is meaningful only on VMS."); | |
3287 | vms_stmlf_recfm = 0; | |
3288 | ||
1d1826db RS |
3289 | DEFVAR_LISP ("file-name-handler-alist", &Vfile_name_handler_alist, |
3290 | "*Alist of elements (REGEXP . HANDLER) for file names handled specially.\n\ | |
3291 | If a file name matches REGEXP, then all I/O on that file is done by calling\n\ | |
3292 | HANDLER.\n\ | |
3293 | \n\ | |
3294 | The first argument given to HANDLER is the name of the I/O primitive\n\ | |
3295 | to be handled; the remaining arguments are the arguments that were\n\ | |
3296 | passed to that primitive. For example, if you do\n\ | |
3297 | (file-exists-p FILENAME)\n\ | |
3298 | and FILENAME is handled by HANDLER, then HANDLER is called like this:\n\ | |
642ef245 JB |
3299 | (funcall HANDLER 'file-exists-p FILENAME)\n\ |
3300 | The function `find-file-name-handler' checks this list for a handler\n\ | |
3301 | for its argument."); | |
09121adc RS |
3302 | Vfile_name_handler_alist = Qnil; |
3303 | ||
642ef245 | 3304 | defsubr (&Sfind_file_name_handler); |
570d7624 JB |
3305 | defsubr (&Sfile_name_directory); |
3306 | defsubr (&Sfile_name_nondirectory); | |
642ef245 | 3307 | defsubr (&Sunhandled_file_name_directory); |
570d7624 JB |
3308 | defsubr (&Sfile_name_as_directory); |
3309 | defsubr (&Sdirectory_file_name); | |
3310 | defsubr (&Smake_temp_name); | |
3311 | defsubr (&Sexpand_file_name); | |
3312 | defsubr (&Ssubstitute_in_file_name); | |
3313 | defsubr (&Scopy_file); | |
9bbe01fb | 3314 | defsubr (&Smake_directory_internal); |
aa734e17 | 3315 | defsubr (&Sdelete_directory); |
570d7624 JB |
3316 | defsubr (&Sdelete_file); |
3317 | defsubr (&Srename_file); | |
3318 | defsubr (&Sadd_name_to_file); | |
3319 | #ifdef S_IFLNK | |
3320 | defsubr (&Smake_symbolic_link); | |
3321 | #endif /* S_IFLNK */ | |
3322 | #ifdef VMS | |
3323 | defsubr (&Sdefine_logical_name); | |
3324 | #endif /* VMS */ | |
3325 | #ifdef HPUX_NET | |
3326 | defsubr (&Ssysnetunam); | |
3327 | #endif /* HPUX_NET */ | |
3328 | defsubr (&Sfile_name_absolute_p); | |
3329 | defsubr (&Sfile_exists_p); | |
3330 | defsubr (&Sfile_executable_p); | |
3331 | defsubr (&Sfile_readable_p); | |
3332 | defsubr (&Sfile_writable_p); | |
3333 | defsubr (&Sfile_symlink_p); | |
3334 | defsubr (&Sfile_directory_p); | |
b72dea2a | 3335 | defsubr (&Sfile_accessible_directory_p); |
570d7624 JB |
3336 | defsubr (&Sfile_modes); |
3337 | defsubr (&Sset_file_modes); | |
36a8c287 JB |
3338 | defsubr (&Sset_umask); |
3339 | defsubr (&Sumask); | |
570d7624 JB |
3340 | defsubr (&Sfile_newer_than_file_p); |
3341 | defsubr (&Sinsert_file_contents); | |
3342 | defsubr (&Swrite_region); | |
3343 | defsubr (&Sverify_visited_file_modtime); | |
3344 | defsubr (&Sclear_visited_file_modtime); | |
3345 | defsubr (&Sset_visited_file_modtime); | |
3346 | defsubr (&Sdo_auto_save); | |
3347 | defsubr (&Sset_buffer_auto_saved); | |
3348 | defsubr (&Srecent_auto_save_p); | |
3349 | ||
3350 | defsubr (&Sread_file_name_internal); | |
3351 | defsubr (&Sread_file_name); | |
85ffea93 | 3352 | |
483a2e10 | 3353 | #ifdef unix |
85ffea93 | 3354 | defsubr (&Sunix_sync); |
483a2e10 | 3355 | #endif |
570d7624 | 3356 | } |