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; | |
570d7624 JB |
600 | #ifdef VMS |
601 | unsigned char * colon = 0; | |
602 | unsigned char * close = 0; | |
603 | unsigned char * slash = 0; | |
604 | unsigned char * brack = 0; | |
605 | int lbrack = 0, rbrack = 0; | |
606 | int dots = 0; | |
607 | #endif /* VMS */ | |
0bf2eed2 | 608 | Lisp_Object handler; |
570d7624 JB |
609 | |
610 | CHECK_STRING (name, 0); | |
611 | ||
0bf2eed2 RS |
612 | /* If the file name has special constructs in it, |
613 | call the corresponding file handler. */ | |
642ef245 | 614 | handler = Ffind_file_name_handler (name); |
0bf2eed2 | 615 | if (!NILP (handler)) |
09121adc | 616 | return call3 (handler, Qexpand_file_name, name, defalt); |
0bf2eed2 | 617 | |
f14b1c68 JB |
618 | /* Make sure DEFALT is properly expanded. |
619 | It would be better to do this down below where we actually use | |
620 | defalt. Unfortunately, calling Fexpand_file_name recursively | |
621 | could invoke GC, and the strings might be relocated. This would | |
622 | be annoying because we have pointers into strings lying around | |
623 | that would need adjusting, and people would add new pointers to | |
624 | the code and forget to adjust them, resulting in intermittent bugs. | |
625 | Putting this call here avoids all that crud. */ | |
626 | if (! NILP (defalt)) | |
627 | { | |
628 | struct gcpro gcpro1; | |
629 | ||
630 | GCPRO1 (name); | |
631 | defalt = Fexpand_file_name (defalt, Qnil); | |
632 | UNGCPRO; | |
633 | } | |
634 | ||
570d7624 JB |
635 | #ifdef VMS |
636 | /* Filenames on VMS are always upper case. */ | |
637 | name = Fupcase (name); | |
638 | #endif | |
639 | ||
640 | nm = XSTRING (name)->data; | |
641 | ||
642 | /* If nm is absolute, flush ...// and detect /./ and /../. | |
643 | If no /./ or /../ we can return right away. */ | |
644 | if ( | |
645 | nm[0] == '/' | |
646 | #ifdef VMS | |
647 | || index (nm, ':') | |
648 | #endif /* VMS */ | |
649 | ) | |
650 | { | |
f14b1c68 JB |
651 | /* If it turns out that the filename we want to return is just a |
652 | suffix of FILENAME, we don't need to go through and edit | |
653 | things; we just need to construct a new string using data | |
654 | starting at the middle of FILENAME. If we set lose to a | |
655 | non-zero value, that means we've discovered that we can't do | |
656 | that cool trick. */ | |
657 | int lose = 0; | |
658 | ||
570d7624 | 659 | p = nm; |
570d7624 JB |
660 | while (*p) |
661 | { | |
c77d647e JB |
662 | /* Since we know the path is absolute, we can assume that each |
663 | element starts with a "/". */ | |
664 | ||
665 | /* "//" anywhere isn't necessarily hairy; we just start afresh | |
666 | with the second slash. */ | |
570d7624 JB |
667 | if (p[0] == '/' && p[1] == '/' |
668 | #ifdef APOLLO | |
669 | /* // at start of filename is meaningful on Apollo system */ | |
670 | && nm != p | |
671 | #endif /* APOLLO */ | |
672 | ) | |
673 | nm = p + 1; | |
c77d647e JB |
674 | |
675 | /* "~" is hairy as the start of any path element. */ | |
570d7624 JB |
676 | if (p[0] == '/' && p[1] == '~') |
677 | nm = p + 1, lose = 1; | |
c77d647e JB |
678 | |
679 | /* "." and ".." are hairy. */ | |
680 | if (p[0] == '/' | |
681 | && p[1] == '.' | |
682 | && (p[2] == '/' | |
683 | || p[2] == 0 | |
684 | || (p[2] == '.' && (p[3] == '/' | |
685 | || p[3] == 0)))) | |
570d7624 JB |
686 | lose = 1; |
687 | #ifdef VMS | |
688 | if (p[0] == '\\') | |
689 | lose = 1; | |
690 | if (p[0] == '/') { | |
691 | /* if dev:[dir]/, move nm to / */ | |
692 | if (!slash && p > nm && (brack || colon)) { | |
693 | nm = (brack ? brack + 1 : colon + 1); | |
694 | lbrack = rbrack = 0; | |
695 | brack = 0; | |
696 | colon = 0; | |
697 | } | |
698 | slash = p; | |
699 | } | |
700 | if (p[0] == '-') | |
701 | #ifndef VMS4_4 | |
702 | /* VMS pre V4.4,convert '-'s in filenames. */ | |
703 | if (lbrack == rbrack) | |
704 | { | |
705 | if (dots < 2) /* this is to allow negative version numbers */ | |
706 | p[0] = '_'; | |
707 | } | |
708 | else | |
709 | #endif /* VMS4_4 */ | |
710 | if (lbrack > rbrack && | |
711 | ((p[-1] == '.' || p[-1] == '[' || p[-1] == '<') && | |
712 | (p[1] == '.' || p[1] == ']' || p[1] == '>'))) | |
713 | lose = 1; | |
714 | #ifndef VMS4_4 | |
715 | else | |
716 | p[0] = '_'; | |
717 | #endif /* VMS4_4 */ | |
718 | /* count open brackets, reset close bracket pointer */ | |
719 | if (p[0] == '[' || p[0] == '<') | |
720 | lbrack++, brack = 0; | |
721 | /* count close brackets, set close bracket pointer */ | |
722 | if (p[0] == ']' || p[0] == '>') | |
723 | rbrack++, brack = p; | |
724 | /* detect ][ or >< */ | |
725 | if ((p[0] == ']' || p[0] == '>') && (p[1] == '[' || p[1] == '<')) | |
726 | lose = 1; | |
727 | if ((p[0] == ':' || p[0] == ']' || p[0] == '>') && p[1] == '~') | |
728 | nm = p + 1, lose = 1; | |
729 | if (p[0] == ':' && (colon || slash)) | |
730 | /* if dev1:[dir]dev2:, move nm to dev2: */ | |
731 | if (brack) | |
732 | { | |
733 | nm = brack + 1; | |
734 | brack = 0; | |
735 | } | |
736 | /* if /pathname/dev:, move nm to dev: */ | |
737 | else if (slash) | |
738 | nm = slash + 1; | |
739 | /* if node::dev:, move colon following dev */ | |
740 | else if (colon && colon[-1] == ':') | |
741 | colon = p; | |
742 | /* if dev1:dev2:, move nm to dev2: */ | |
743 | else if (colon && colon[-1] != ':') | |
744 | { | |
745 | nm = colon + 1; | |
746 | colon = 0; | |
747 | } | |
748 | if (p[0] == ':' && !colon) | |
749 | { | |
750 | if (p[1] == ':') | |
751 | p++; | |
752 | colon = p; | |
753 | } | |
754 | if (lbrack == rbrack) | |
755 | if (p[0] == ';') | |
756 | dots = 2; | |
757 | else if (p[0] == '.') | |
758 | dots++; | |
759 | #endif /* VMS */ | |
760 | p++; | |
761 | } | |
762 | if (!lose) | |
763 | { | |
764 | #ifdef VMS | |
765 | if (index (nm, '/')) | |
766 | return build_string (sys_translate_unix (nm)); | |
767 | #endif /* VMS */ | |
768 | if (nm == XSTRING (name)->data) | |
769 | return name; | |
770 | return build_string (nm); | |
771 | } | |
772 | } | |
773 | ||
774 | /* Now determine directory to start with and put it in newdir */ | |
775 | ||
776 | newdir = 0; | |
777 | ||
778 | if (nm[0] == '~') /* prefix ~ */ | |
c77d647e JB |
779 | { |
780 | if (nm[1] == '/' | |
570d7624 | 781 | #ifdef VMS |
c77d647e JB |
782 | || nm[1] == ':' |
783 | #endif /* VMS */ | |
784 | || nm[1] == 0) /* ~ by itself */ | |
785 | { | |
786 | if (!(newdir = (unsigned char *) egetenv ("HOME"))) | |
787 | newdir = (unsigned char *) ""; | |
788 | nm++; | |
570d7624 | 789 | #ifdef VMS |
c77d647e JB |
790 | nm++; /* Don't leave the slash in nm. */ |
791 | #endif /* VMS */ | |
792 | } | |
793 | else /* ~user/filename */ | |
794 | { | |
795 | for (p = nm; *p && (*p != '/' | |
570d7624 | 796 | #ifdef VMS |
c77d647e JB |
797 | && *p != ':' |
798 | #endif /* VMS */ | |
799 | ); p++); | |
800 | o = (unsigned char *) alloca (p - nm + 1); | |
801 | bcopy ((char *) nm, o, p - nm); | |
802 | o [p - nm] = 0; | |
803 | ||
804 | pw = (struct passwd *) getpwnam (o + 1); | |
805 | if (pw) | |
806 | { | |
807 | newdir = (unsigned char *) pw -> pw_dir; | |
570d7624 | 808 | #ifdef VMS |
c77d647e | 809 | nm = p + 1; /* skip the terminator */ |
570d7624 | 810 | #else |
c77d647e JB |
811 | nm = p; |
812 | #endif /* VMS */ | |
813 | } | |
e5d77022 | 814 | |
c77d647e JB |
815 | /* If we don't find a user of that name, leave the name |
816 | unchanged; don't move nm forward to p. */ | |
817 | } | |
818 | } | |
570d7624 JB |
819 | |
820 | if (nm[0] != '/' | |
821 | #ifdef VMS | |
822 | && !index (nm, ':') | |
823 | #endif /* not VMS */ | |
824 | && !newdir) | |
825 | { | |
265a9e55 | 826 | if (NILP (defalt)) |
570d7624 JB |
827 | defalt = current_buffer->directory; |
828 | CHECK_STRING (defalt, 1); | |
829 | newdir = XSTRING (defalt)->data; | |
830 | } | |
831 | ||
bfb61299 JB |
832 | if (newdir != 0) |
833 | { | |
834 | /* Get rid of any slash at the end of newdir. */ | |
835 | int length = strlen (newdir); | |
836 | if (newdir[length - 1] == '/') | |
837 | { | |
838 | unsigned char *temp = (unsigned char *) alloca (length); | |
839 | bcopy (newdir, temp, length - 1); | |
840 | temp[length - 1] = 0; | |
841 | newdir = temp; | |
842 | } | |
843 | tlen = length + 1; | |
844 | } | |
845 | else | |
846 | tlen = 0; | |
570d7624 | 847 | |
bfb61299 JB |
848 | /* Now concatenate the directory and name to new space in the stack frame */ |
849 | tlen += strlen (nm) + 1; | |
570d7624 JB |
850 | target = (unsigned char *) alloca (tlen); |
851 | *target = 0; | |
852 | ||
853 | if (newdir) | |
854 | { | |
855 | #ifndef VMS | |
856 | if (nm[0] == 0 || nm[0] == '/') | |
857 | strcpy (target, newdir); | |
858 | else | |
859 | #endif | |
c77d647e | 860 | file_name_as_directory (target, newdir); |
570d7624 JB |
861 | } |
862 | ||
863 | strcat (target, nm); | |
864 | #ifdef VMS | |
865 | if (index (target, '/')) | |
866 | strcpy (target, sys_translate_unix (target)); | |
867 | #endif /* VMS */ | |
868 | ||
c77d647e | 869 | /* Now canonicalize by removing /. and /foo/.. if they appear. */ |
570d7624 JB |
870 | |
871 | p = target; | |
872 | o = target; | |
873 | ||
874 | while (*p) | |
875 | { | |
876 | #ifdef VMS | |
877 | if (*p != ']' && *p != '>' && *p != '-') | |
878 | { | |
879 | if (*p == '\\') | |
880 | p++; | |
881 | *o++ = *p++; | |
882 | } | |
883 | else if ((p[0] == ']' || p[0] == '>') && p[0] == p[1] + 2) | |
884 | /* brackets are offset from each other by 2 */ | |
885 | { | |
886 | p += 2; | |
887 | if (*p != '.' && *p != '-' && o[-1] != '.') | |
888 | /* convert [foo][bar] to [bar] */ | |
889 | while (o[-1] != '[' && o[-1] != '<') | |
890 | o--; | |
891 | else if (*p == '-' && *o != '.') | |
892 | *--p = '.'; | |
893 | } | |
894 | else if (p[0] == '-' && o[-1] == '.' && | |
895 | (p[1] == '.' || p[1] == ']' || p[1] == '>')) | |
896 | /* flush .foo.- ; leave - if stopped by '[' or '<' */ | |
897 | { | |
898 | do | |
899 | o--; | |
900 | while (o[-1] != '.' && o[-1] != '[' && o[-1] != '<'); | |
901 | if (p[1] == '.') /* foo.-.bar ==> bar*/ | |
902 | p += 2; | |
903 | else if (o[-1] == '.') /* '.foo.-]' ==> ']' */ | |
904 | p++, o--; | |
905 | /* else [foo.-] ==> [-] */ | |
906 | } | |
907 | else | |
908 | { | |
909 | #ifndef VMS4_4 | |
910 | if (*p == '-' && | |
911 | o[-1] != '[' && o[-1] != '<' && o[-1] != '.' && | |
912 | p[1] != ']' && p[1] != '>' && p[1] != '.') | |
913 | *p = '_'; | |
914 | #endif /* VMS4_4 */ | |
915 | *o++ = *p++; | |
916 | } | |
917 | #else /* not VMS */ | |
918 | if (*p != '/') | |
919 | { | |
920 | *o++ = *p++; | |
921 | } | |
922 | else if (!strncmp (p, "//", 2) | |
923 | #ifdef APOLLO | |
924 | /* // at start of filename is meaningful in Apollo system */ | |
925 | && o != target | |
926 | #endif /* APOLLO */ | |
927 | ) | |
928 | { | |
929 | o = target; | |
930 | p++; | |
931 | } | |
c77d647e JB |
932 | else if (p[0] == '/' |
933 | && p[1] == '.' | |
934 | && (p[2] == '/' | |
935 | || p[2] == 0)) | |
936 | { | |
937 | /* If "/." is the entire filename, keep the "/". Otherwise, | |
938 | just delete the whole "/.". */ | |
939 | if (o == target && p[2] == '\0') | |
940 | *o++ = *p; | |
941 | p += 2; | |
942 | } | |
570d7624 JB |
943 | else if (!strncmp (p, "/..", 3) |
944 | /* `/../' is the "superroot" on certain file systems. */ | |
945 | && o != target | |
946 | && (p[3] == '/' || p[3] == 0)) | |
947 | { | |
948 | while (o != target && *--o != '/') | |
949 | ; | |
950 | #ifdef APOLLO | |
951 | if (o == target + 1 && o[-1] == '/' && o[0] == '/') | |
952 | ++o; | |
953 | else | |
954 | #endif /* APOLLO */ | |
955 | if (o == target && *o == '/') | |
956 | ++o; | |
957 | p += 3; | |
958 | } | |
959 | else | |
960 | { | |
961 | *o++ = *p++; | |
962 | } | |
963 | #endif /* not VMS */ | |
964 | } | |
965 | ||
966 | return make_string (target, o - target); | |
967 | } | |
968 | #if 0 | |
e5d77022 JB |
969 | /* Changed this DEFUN to a DEAFUN, so as not to confuse `make-docfile'. |
970 | DEAFUN ("expand-file-name", Fexpand_file_name, Sexpand_file_name, 1, 2, 0, | |
570d7624 JB |
971 | "Convert FILENAME to absolute, and canonicalize it.\n\ |
972 | Second arg DEFAULT is directory to start with if FILENAME is relative\n\ | |
973 | (does not start with slash); if DEFAULT is nil or missing,\n\ | |
974 | the current buffer's value of default-directory is used.\n\ | |
975 | Filenames containing `.' or `..' as components are simplified;\n\ | |
976 | initial `~/' expands to your home directory.\n\ | |
977 | See also the function `substitute-in-file-name'.") | |
978 | (name, defalt) | |
979 | Lisp_Object name, defalt; | |
980 | { | |
981 | unsigned char *nm; | |
982 | ||
983 | register unsigned char *newdir, *p, *o; | |
984 | int tlen; | |
985 | unsigned char *target; | |
986 | struct passwd *pw; | |
987 | int lose; | |
988 | #ifdef VMS | |
989 | unsigned char * colon = 0; | |
990 | unsigned char * close = 0; | |
991 | unsigned char * slash = 0; | |
992 | unsigned char * brack = 0; | |
993 | int lbrack = 0, rbrack = 0; | |
994 | int dots = 0; | |
995 | #endif /* VMS */ | |
996 | ||
997 | CHECK_STRING (name, 0); | |
998 | ||
999 | #ifdef VMS | |
1000 | /* Filenames on VMS are always upper case. */ | |
1001 | name = Fupcase (name); | |
1002 | #endif | |
1003 | ||
1004 | nm = XSTRING (name)->data; | |
1005 | ||
1006 | /* If nm is absolute, flush ...// and detect /./ and /../. | |
1007 | If no /./ or /../ we can return right away. */ | |
1008 | if ( | |
1009 | nm[0] == '/' | |
1010 | #ifdef VMS | |
1011 | || index (nm, ':') | |
1012 | #endif /* VMS */ | |
1013 | ) | |
1014 | { | |
1015 | p = nm; | |
1016 | lose = 0; | |
1017 | while (*p) | |
1018 | { | |
1019 | if (p[0] == '/' && p[1] == '/' | |
1020 | #ifdef APOLLO | |
1021 | /* // at start of filename is meaningful on Apollo system */ | |
1022 | && nm != p | |
1023 | #endif /* APOLLO */ | |
1024 | ) | |
1025 | nm = p + 1; | |
1026 | if (p[0] == '/' && p[1] == '~') | |
1027 | nm = p + 1, lose = 1; | |
1028 | if (p[0] == '/' && p[1] == '.' | |
1029 | && (p[2] == '/' || p[2] == 0 | |
1030 | || (p[2] == '.' && (p[3] == '/' || p[3] == 0)))) | |
1031 | lose = 1; | |
1032 | #ifdef VMS | |
1033 | if (p[0] == '\\') | |
1034 | lose = 1; | |
1035 | if (p[0] == '/') { | |
1036 | /* if dev:[dir]/, move nm to / */ | |
1037 | if (!slash && p > nm && (brack || colon)) { | |
1038 | nm = (brack ? brack + 1 : colon + 1); | |
1039 | lbrack = rbrack = 0; | |
1040 | brack = 0; | |
1041 | colon = 0; | |
1042 | } | |
1043 | slash = p; | |
1044 | } | |
1045 | if (p[0] == '-') | |
1046 | #ifndef VMS4_4 | |
1047 | /* VMS pre V4.4,convert '-'s in filenames. */ | |
1048 | if (lbrack == rbrack) | |
1049 | { | |
1050 | if (dots < 2) /* this is to allow negative version numbers */ | |
1051 | p[0] = '_'; | |
1052 | } | |
1053 | else | |
1054 | #endif /* VMS4_4 */ | |
1055 | if (lbrack > rbrack && | |
1056 | ((p[-1] == '.' || p[-1] == '[' || p[-1] == '<') && | |
1057 | (p[1] == '.' || p[1] == ']' || p[1] == '>'))) | |
1058 | lose = 1; | |
1059 | #ifndef VMS4_4 | |
1060 | else | |
1061 | p[0] = '_'; | |
1062 | #endif /* VMS4_4 */ | |
1063 | /* count open brackets, reset close bracket pointer */ | |
1064 | if (p[0] == '[' || p[0] == '<') | |
1065 | lbrack++, brack = 0; | |
1066 | /* count close brackets, set close bracket pointer */ | |
1067 | if (p[0] == ']' || p[0] == '>') | |
1068 | rbrack++, brack = p; | |
1069 | /* detect ][ or >< */ | |
1070 | if ((p[0] == ']' || p[0] == '>') && (p[1] == '[' || p[1] == '<')) | |
1071 | lose = 1; | |
1072 | if ((p[0] == ':' || p[0] == ']' || p[0] == '>') && p[1] == '~') | |
1073 | nm = p + 1, lose = 1; | |
1074 | if (p[0] == ':' && (colon || slash)) | |
1075 | /* if dev1:[dir]dev2:, move nm to dev2: */ | |
1076 | if (brack) | |
1077 | { | |
1078 | nm = brack + 1; | |
1079 | brack = 0; | |
1080 | } | |
1081 | /* if /pathname/dev:, move nm to dev: */ | |
1082 | else if (slash) | |
1083 | nm = slash + 1; | |
1084 | /* if node::dev:, move colon following dev */ | |
1085 | else if (colon && colon[-1] == ':') | |
1086 | colon = p; | |
1087 | /* if dev1:dev2:, move nm to dev2: */ | |
1088 | else if (colon && colon[-1] != ':') | |
1089 | { | |
1090 | nm = colon + 1; | |
1091 | colon = 0; | |
1092 | } | |
1093 | if (p[0] == ':' && !colon) | |
1094 | { | |
1095 | if (p[1] == ':') | |
1096 | p++; | |
1097 | colon = p; | |
1098 | } | |
1099 | if (lbrack == rbrack) | |
1100 | if (p[0] == ';') | |
1101 | dots = 2; | |
1102 | else if (p[0] == '.') | |
1103 | dots++; | |
1104 | #endif /* VMS */ | |
1105 | p++; | |
1106 | } | |
1107 | if (!lose) | |
1108 | { | |
1109 | #ifdef VMS | |
1110 | if (index (nm, '/')) | |
1111 | return build_string (sys_translate_unix (nm)); | |
1112 | #endif /* VMS */ | |
1113 | if (nm == XSTRING (name)->data) | |
1114 | return name; | |
1115 | return build_string (nm); | |
1116 | } | |
1117 | } | |
1118 | ||
1119 | /* Now determine directory to start with and put it in NEWDIR */ | |
1120 | ||
1121 | newdir = 0; | |
1122 | ||
1123 | if (nm[0] == '~') /* prefix ~ */ | |
1124 | if (nm[1] == '/' | |
1125 | #ifdef VMS | |
1126 | || nm[1] == ':' | |
1127 | #endif /* VMS */ | |
1128 | || nm[1] == 0)/* ~/filename */ | |
1129 | { | |
1130 | if (!(newdir = (unsigned char *) egetenv ("HOME"))) | |
1131 | newdir = (unsigned char *) ""; | |
1132 | nm++; | |
1133 | #ifdef VMS | |
1134 | nm++; /* Don't leave the slash in nm. */ | |
1135 | #endif /* VMS */ | |
1136 | } | |
1137 | else /* ~user/filename */ | |
1138 | { | |
1139 | /* Get past ~ to user */ | |
1140 | unsigned char *user = nm + 1; | |
1141 | /* Find end of name. */ | |
1142 | unsigned char *ptr = (unsigned char *) index (user, '/'); | |
1143 | int len = ptr ? ptr - user : strlen (user); | |
1144 | #ifdef VMS | |
1145 | unsigned char *ptr1 = index (user, ':'); | |
1146 | if (ptr1 != 0 && ptr1 - user < len) | |
1147 | len = ptr1 - user; | |
1148 | #endif /* VMS */ | |
1149 | /* Copy the user name into temp storage. */ | |
1150 | o = (unsigned char *) alloca (len + 1); | |
1151 | bcopy ((char *) user, o, len); | |
1152 | o[len] = 0; | |
1153 | ||
1154 | /* Look up the user name. */ | |
1155 | pw = (struct passwd *) getpwnam (o + 1); | |
1156 | if (!pw) | |
1157 | error ("\"%s\" isn't a registered user", o + 1); | |
1158 | ||
1159 | newdir = (unsigned char *) pw->pw_dir; | |
1160 | ||
1161 | /* Discard the user name from NM. */ | |
1162 | nm += len; | |
1163 | } | |
1164 | ||
1165 | if (nm[0] != '/' | |
1166 | #ifdef VMS | |
1167 | && !index (nm, ':') | |
1168 | #endif /* not VMS */ | |
1169 | && !newdir) | |
1170 | { | |
265a9e55 | 1171 | if (NILP (defalt)) |
570d7624 JB |
1172 | defalt = current_buffer->directory; |
1173 | CHECK_STRING (defalt, 1); | |
1174 | newdir = XSTRING (defalt)->data; | |
1175 | } | |
1176 | ||
1177 | /* Now concatenate the directory and name to new space in the stack frame */ | |
1178 | ||
1179 | tlen = (newdir ? strlen (newdir) + 1 : 0) + strlen (nm) + 1; | |
1180 | target = (unsigned char *) alloca (tlen); | |
1181 | *target = 0; | |
1182 | ||
1183 | if (newdir) | |
1184 | { | |
1185 | #ifndef VMS | |
1186 | if (nm[0] == 0 || nm[0] == '/') | |
1187 | strcpy (target, newdir); | |
1188 | else | |
1189 | #endif | |
1190 | file_name_as_directory (target, newdir); | |
1191 | } | |
1192 | ||
1193 | strcat (target, nm); | |
1194 | #ifdef VMS | |
1195 | if (index (target, '/')) | |
1196 | strcpy (target, sys_translate_unix (target)); | |
1197 | #endif /* VMS */ | |
1198 | ||
1199 | /* Now canonicalize by removing /. and /foo/.. if they appear */ | |
1200 | ||
1201 | p = target; | |
1202 | o = target; | |
1203 | ||
1204 | while (*p) | |
1205 | { | |
1206 | #ifdef VMS | |
1207 | if (*p != ']' && *p != '>' && *p != '-') | |
1208 | { | |
1209 | if (*p == '\\') | |
1210 | p++; | |
1211 | *o++ = *p++; | |
1212 | } | |
1213 | else if ((p[0] == ']' || p[0] == '>') && p[0] == p[1] + 2) | |
1214 | /* brackets are offset from each other by 2 */ | |
1215 | { | |
1216 | p += 2; | |
1217 | if (*p != '.' && *p != '-' && o[-1] != '.') | |
1218 | /* convert [foo][bar] to [bar] */ | |
1219 | while (o[-1] != '[' && o[-1] != '<') | |
1220 | o--; | |
1221 | else if (*p == '-' && *o != '.') | |
1222 | *--p = '.'; | |
1223 | } | |
1224 | else if (p[0] == '-' && o[-1] == '.' && | |
1225 | (p[1] == '.' || p[1] == ']' || p[1] == '>')) | |
1226 | /* flush .foo.- ; leave - if stopped by '[' or '<' */ | |
1227 | { | |
1228 | do | |
1229 | o--; | |
1230 | while (o[-1] != '.' && o[-1] != '[' && o[-1] != '<'); | |
1231 | if (p[1] == '.') /* foo.-.bar ==> bar*/ | |
1232 | p += 2; | |
1233 | else if (o[-1] == '.') /* '.foo.-]' ==> ']' */ | |
1234 | p++, o--; | |
1235 | /* else [foo.-] ==> [-] */ | |
1236 | } | |
1237 | else | |
1238 | { | |
1239 | #ifndef VMS4_4 | |
1240 | if (*p == '-' && | |
1241 | o[-1] != '[' && o[-1] != '<' && o[-1] != '.' && | |
1242 | p[1] != ']' && p[1] != '>' && p[1] != '.') | |
1243 | *p = '_'; | |
1244 | #endif /* VMS4_4 */ | |
1245 | *o++ = *p++; | |
1246 | } | |
1247 | #else /* not VMS */ | |
1248 | if (*p != '/') | |
1249 | { | |
1250 | *o++ = *p++; | |
1251 | } | |
1252 | else if (!strncmp (p, "//", 2) | |
1253 | #ifdef APOLLO | |
1254 | /* // at start of filename is meaningful in Apollo system */ | |
1255 | && o != target | |
1256 | #endif /* APOLLO */ | |
1257 | ) | |
1258 | { | |
1259 | o = target; | |
1260 | p++; | |
1261 | } | |
1262 | else if (p[0] == '/' && p[1] == '.' && | |
1263 | (p[2] == '/' || p[2] == 0)) | |
1264 | p += 2; | |
1265 | else if (!strncmp (p, "/..", 3) | |
1266 | /* `/../' is the "superroot" on certain file systems. */ | |
1267 | && o != target | |
1268 | && (p[3] == '/' || p[3] == 0)) | |
1269 | { | |
1270 | while (o != target && *--o != '/') | |
1271 | ; | |
1272 | #ifdef APOLLO | |
1273 | if (o == target + 1 && o[-1] == '/' && o[0] == '/') | |
1274 | ++o; | |
1275 | else | |
1276 | #endif /* APOLLO */ | |
1277 | if (o == target && *o == '/') | |
1278 | ++o; | |
1279 | p += 3; | |
1280 | } | |
1281 | else | |
1282 | { | |
1283 | *o++ = *p++; | |
1284 | } | |
1285 | #endif /* not VMS */ | |
1286 | } | |
1287 | ||
1288 | return make_string (target, o - target); | |
1289 | } | |
1290 | #endif | |
1291 | \f | |
1292 | DEFUN ("substitute-in-file-name", Fsubstitute_in_file_name, | |
1293 | Ssubstitute_in_file_name, 1, 1, 0, | |
1294 | "Substitute environment variables referred to in FILENAME.\n\ | |
1295 | `$FOO' where FOO is an environment variable name means to substitute\n\ | |
1296 | the value of that variable. The variable name should be terminated\n\ | |
1297 | with a character not a letter, digit or underscore; otherwise, enclose\n\ | |
1298 | the entire variable name in braces.\n\ | |
1299 | If `/~' appears, all of FILENAME through that `/' is discarded.\n\n\ | |
1300 | On VMS, `$' substitution is not done; this function does little and only\n\ | |
1301 | duplicates what `expand-file-name' does.") | |
1302 | (string) | |
1303 | Lisp_Object string; | |
1304 | { | |
1305 | unsigned char *nm; | |
1306 | ||
1307 | register unsigned char *s, *p, *o, *x, *endp; | |
1308 | unsigned char *target; | |
1309 | int total = 0; | |
1310 | int substituted = 0; | |
1311 | unsigned char *xnm; | |
1312 | ||
1313 | CHECK_STRING (string, 0); | |
1314 | ||
1315 | nm = XSTRING (string)->data; | |
1316 | endp = nm + XSTRING (string)->size; | |
1317 | ||
1318 | /* If /~ or // appears, discard everything through first slash. */ | |
1319 | ||
1320 | for (p = nm; p != endp; p++) | |
1321 | { | |
1322 | if ((p[0] == '~' || | |
1323 | #ifdef APOLLO | |
1324 | /* // at start of file name is meaningful in Apollo system */ | |
1325 | (p[0] == '/' && p - 1 != nm) | |
1326 | #else /* not APOLLO */ | |
1327 | p[0] == '/' | |
1328 | #endif /* not APOLLO */ | |
1329 | ) | |
1330 | && p != nm && | |
1331 | #ifdef VMS | |
1332 | (p[-1] == ':' || p[-1] == ']' || p[-1] == '>' || | |
1333 | #endif /* VMS */ | |
1334 | p[-1] == '/') | |
1335 | #ifdef VMS | |
1336 | ) | |
1337 | #endif /* VMS */ | |
1338 | { | |
1339 | nm = p; | |
1340 | substituted = 1; | |
1341 | } | |
1342 | } | |
1343 | ||
1344 | #ifdef VMS | |
1345 | return build_string (nm); | |
1346 | #else | |
1347 | ||
1348 | /* See if any variables are substituted into the string | |
1349 | and find the total length of their values in `total' */ | |
1350 | ||
1351 | for (p = nm; p != endp;) | |
1352 | if (*p != '$') | |
1353 | p++; | |
1354 | else | |
1355 | { | |
1356 | p++; | |
1357 | if (p == endp) | |
1358 | goto badsubst; | |
1359 | else if (*p == '$') | |
1360 | { | |
1361 | /* "$$" means a single "$" */ | |
1362 | p++; | |
1363 | total -= 1; | |
1364 | substituted = 1; | |
1365 | continue; | |
1366 | } | |
1367 | else if (*p == '{') | |
1368 | { | |
1369 | o = ++p; | |
1370 | while (p != endp && *p != '}') p++; | |
1371 | if (*p != '}') goto missingclose; | |
1372 | s = p; | |
1373 | } | |
1374 | else | |
1375 | { | |
1376 | o = p; | |
1377 | while (p != endp && (isalnum (*p) || *p == '_')) p++; | |
1378 | s = p; | |
1379 | } | |
1380 | ||
1381 | /* Copy out the variable name */ | |
1382 | target = (unsigned char *) alloca (s - o + 1); | |
1383 | strncpy (target, o, s - o); | |
1384 | target[s - o] = 0; | |
1385 | ||
1386 | /* Get variable value */ | |
1387 | o = (unsigned char *) egetenv (target); | |
1388 | /* The presence of this code makes vax 5.0 crash, for reasons yet unknown */ | |
1389 | #if 0 | |
1390 | #ifdef USG | |
1391 | if (!o && !strcmp (target, "USER")) | |
1392 | o = egetenv ("LOGNAME"); | |
1393 | #endif /* USG */ | |
1394 | #endif /* 0 */ | |
1395 | if (!o) goto badvar; | |
1396 | total += strlen (o); | |
1397 | substituted = 1; | |
1398 | } | |
1399 | ||
1400 | if (!substituted) | |
1401 | return string; | |
1402 | ||
1403 | /* If substitution required, recopy the string and do it */ | |
1404 | /* Make space in stack frame for the new copy */ | |
1405 | xnm = (unsigned char *) alloca (XSTRING (string)->size + total + 1); | |
1406 | x = xnm; | |
1407 | ||
1408 | /* Copy the rest of the name through, replacing $ constructs with values */ | |
1409 | for (p = nm; *p;) | |
1410 | if (*p != '$') | |
1411 | *x++ = *p++; | |
1412 | else | |
1413 | { | |
1414 | p++; | |
1415 | if (p == endp) | |
1416 | goto badsubst; | |
1417 | else if (*p == '$') | |
1418 | { | |
1419 | *x++ = *p++; | |
1420 | continue; | |
1421 | } | |
1422 | else if (*p == '{') | |
1423 | { | |
1424 | o = ++p; | |
1425 | while (p != endp && *p != '}') p++; | |
1426 | if (*p != '}') goto missingclose; | |
1427 | s = p++; | |
1428 | } | |
1429 | else | |
1430 | { | |
1431 | o = p; | |
1432 | while (p != endp && (isalnum (*p) || *p == '_')) p++; | |
1433 | s = p; | |
1434 | } | |
1435 | ||
1436 | /* Copy out the variable name */ | |
1437 | target = (unsigned char *) alloca (s - o + 1); | |
1438 | strncpy (target, o, s - o); | |
1439 | target[s - o] = 0; | |
1440 | ||
1441 | /* Get variable value */ | |
1442 | o = (unsigned char *) egetenv (target); | |
1443 | /* The presence of this code makes vax 5.0 crash, for reasons yet unknown */ | |
1444 | #if 0 | |
1445 | #ifdef USG | |
1446 | if (!o && !strcmp (target, "USER")) | |
1447 | o = egetenv ("LOGNAME"); | |
1448 | #endif /* USG */ | |
1449 | #endif /* 0 */ | |
1450 | if (!o) | |
1451 | goto badvar; | |
1452 | ||
1453 | strcpy (x, o); | |
1454 | x += strlen (o); | |
1455 | } | |
1456 | ||
1457 | *x = 0; | |
1458 | ||
1459 | /* If /~ or // appears, discard everything through first slash. */ | |
1460 | ||
1461 | for (p = xnm; p != x; p++) | |
1462 | if ((p[0] == '~' || | |
1463 | #ifdef APOLLO | |
1464 | /* // at start of file name is meaningful in Apollo system */ | |
1465 | (p[0] == '/' && p - 1 != xnm) | |
1466 | #else /* not APOLLO */ | |
1467 | p[0] == '/' | |
1468 | #endif /* not APOLLO */ | |
1469 | ) | |
1470 | && p != nm && p[-1] == '/') | |
1471 | xnm = p; | |
1472 | ||
1473 | return make_string (xnm, x - xnm); | |
1474 | ||
1475 | badsubst: | |
1476 | error ("Bad format environment-variable substitution"); | |
1477 | missingclose: | |
1478 | error ("Missing \"}\" in environment-variable substitution"); | |
1479 | badvar: | |
1480 | error ("Substituting nonexistent environment variable \"%s\"", target); | |
1481 | ||
1482 | /* NOTREACHED */ | |
1483 | #endif /* not VMS */ | |
1484 | } | |
1485 | \f | |
067ffa38 JB |
1486 | /* A slightly faster and more convenient way to get |
1487 | (directory-file-name (expand-file-name FOO)). The return value may | |
1488 | have had its last character zapped with a '\0' character, meaning | |
1489 | that it is acceptable to system calls, but not to other lisp | |
1490 | functions. Callers should make sure that the return value doesn't | |
1491 | escape. */ | |
1492 | ||
570d7624 JB |
1493 | Lisp_Object |
1494 | expand_and_dir_to_file (filename, defdir) | |
1495 | Lisp_Object filename, defdir; | |
1496 | { | |
1497 | register Lisp_Object abspath; | |
1498 | ||
1499 | abspath = Fexpand_file_name (filename, defdir); | |
1500 | #ifdef VMS | |
1501 | { | |
1502 | register int c = XSTRING (abspath)->data[XSTRING (abspath)->size - 1]; | |
1503 | if (c == ':' || c == ']' || c == '>') | |
1504 | abspath = Fdirectory_file_name (abspath); | |
1505 | } | |
1506 | #else | |
1507 | /* Remove final slash, if any (unless path is root). | |
1508 | stat behaves differently depending! */ | |
1509 | if (XSTRING (abspath)->size > 1 | |
1510 | && XSTRING (abspath)->data[XSTRING (abspath)->size - 1] == '/') | |
1511 | { | |
1512 | if (EQ (abspath, filename)) | |
1513 | abspath = Fcopy_sequence (abspath); | |
1514 | XSTRING (abspath)->data[XSTRING (abspath)->size - 1] = 0; | |
1515 | } | |
1516 | #endif | |
1517 | return abspath; | |
1518 | } | |
1519 | \f | |
1520 | barf_or_query_if_file_exists (absname, querystring, interactive) | |
1521 | Lisp_Object absname; | |
1522 | unsigned char *querystring; | |
1523 | int interactive; | |
1524 | { | |
1525 | register Lisp_Object tem; | |
1526 | struct gcpro gcpro1; | |
1527 | ||
1528 | if (access (XSTRING (absname)->data, 4) >= 0) | |
1529 | { | |
1530 | if (! interactive) | |
1531 | Fsignal (Qfile_already_exists, | |
1532 | Fcons (build_string ("File already exists"), | |
1533 | Fcons (absname, Qnil))); | |
1534 | GCPRO1 (absname); | |
1535 | tem = do_yes_or_no_p (format1 ("File %s already exists; %s anyway? ", | |
1536 | XSTRING (absname)->data, querystring)); | |
1537 | UNGCPRO; | |
265a9e55 | 1538 | if (NILP (tem)) |
570d7624 JB |
1539 | Fsignal (Qfile_already_exists, |
1540 | Fcons (build_string ("File already exists"), | |
1541 | Fcons (absname, Qnil))); | |
1542 | } | |
1543 | return; | |
1544 | } | |
1545 | ||
1546 | DEFUN ("copy-file", Fcopy_file, Scopy_file, 2, 4, | |
349a7710 | 1547 | "fCopy file: \nFCopy %s to file: \np\nP", |
570d7624 JB |
1548 | "Copy FILE to NEWNAME. Both args must be strings.\n\ |
1549 | Signals a `file-already-exists' error if file NEWNAME already exists,\n\ | |
1550 | unless a third argument OK-IF-ALREADY-EXISTS is supplied and non-nil.\n\ | |
1551 | A number as third arg means request confirmation if NEWNAME already exists.\n\ | |
1552 | This is what happens in interactive use with M-x.\n\ | |
349a7710 JB |
1553 | Fourth arg KEEP-TIME non-nil means give the new file the same\n\ |
1554 | last-modified time as the old one. (This works on only some systems.)\n\ | |
1555 | A prefix arg makes KEEP-TIME non-nil.") | |
570d7624 JB |
1556 | (filename, newname, ok_if_already_exists, keep_date) |
1557 | Lisp_Object filename, newname, ok_if_already_exists, keep_date; | |
1558 | { | |
1559 | int ifd, ofd, n; | |
1560 | char buf[16 * 1024]; | |
1561 | struct stat st; | |
32f4334d | 1562 | Lisp_Object handler; |
570d7624 | 1563 | struct gcpro gcpro1, gcpro2; |
b5148e85 | 1564 | int count = specpdl_ptr - specpdl; |
570d7624 JB |
1565 | |
1566 | GCPRO2 (filename, newname); | |
1567 | CHECK_STRING (filename, 0); | |
1568 | CHECK_STRING (newname, 1); | |
1569 | filename = Fexpand_file_name (filename, Qnil); | |
1570 | newname = Fexpand_file_name (newname, Qnil); | |
32f4334d | 1571 | |
0bf2eed2 | 1572 | /* If the input file name has special constructs in it, |
32f4334d | 1573 | call the corresponding file handler. */ |
642ef245 | 1574 | handler = Ffind_file_name_handler (filename); |
0bf2eed2 RS |
1575 | if (!NILP (handler)) |
1576 | return call3 (handler, Qcopy_file, filename, newname); | |
1577 | /* Likewise for output file name. */ | |
642ef245 | 1578 | handler = Ffind_file_name_handler (newname); |
32f4334d RS |
1579 | if (!NILP (handler)) |
1580 | return call3 (handler, Qcopy_file, filename, newname); | |
1581 | ||
265a9e55 | 1582 | if (NILP (ok_if_already_exists) |
570d7624 JB |
1583 | || XTYPE (ok_if_already_exists) == Lisp_Int) |
1584 | barf_or_query_if_file_exists (newname, "copy to it", | |
1585 | XTYPE (ok_if_already_exists) == Lisp_Int); | |
1586 | ||
1587 | ifd = open (XSTRING (filename)->data, 0); | |
1588 | if (ifd < 0) | |
1589 | report_file_error ("Opening input file", Fcons (filename, Qnil)); | |
1590 | ||
b5148e85 RS |
1591 | record_unwind_protect (close_file_unwind, make_number (ifd)); |
1592 | ||
570d7624 JB |
1593 | #ifdef VMS |
1594 | /* Create the copy file with the same record format as the input file */ | |
1595 | ofd = sys_creat (XSTRING (newname)->data, 0666, ifd); | |
1596 | #else | |
1597 | ofd = creat (XSTRING (newname)->data, 0666); | |
1598 | #endif /* VMS */ | |
1599 | if (ofd < 0) | |
66331187 | 1600 | report_file_error ("Opening output file", Fcons (newname, Qnil)); |
b5148e85 RS |
1601 | |
1602 | record_unwind_protect (close_file_unwind, make_number (ofd)); | |
570d7624 | 1603 | |
b5148e85 RS |
1604 | immediate_quit = 1; |
1605 | QUIT; | |
570d7624 JB |
1606 | while ((n = read (ifd, buf, sizeof buf)) > 0) |
1607 | if (write (ofd, buf, n) != n) | |
66331187 | 1608 | report_file_error ("I/O error", Fcons (newname, Qnil)); |
b5148e85 | 1609 | immediate_quit = 0; |
570d7624 JB |
1610 | |
1611 | if (fstat (ifd, &st) >= 0) | |
1612 | { | |
265a9e55 | 1613 | if (!NILP (keep_date)) |
570d7624 | 1614 | { |
de5bf5d3 JB |
1615 | EMACS_TIME atime, mtime; |
1616 | EMACS_SET_SECS_USECS (atime, st.st_atime, 0); | |
1617 | EMACS_SET_SECS_USECS (mtime, st.st_mtime, 0); | |
1618 | EMACS_SET_UTIMES (XSTRING (newname)->data, atime, mtime); | |
570d7624 | 1619 | } |
570d7624 JB |
1620 | #ifdef APOLLO |
1621 | if (!egetenv ("USE_DOMAIN_ACLS")) | |
1622 | #endif | |
de5bf5d3 | 1623 | chmod (XSTRING (newname)->data, st.st_mode & 07777); |
570d7624 JB |
1624 | } |
1625 | ||
b5148e85 RS |
1626 | /* Discard the unwind protects. */ |
1627 | specpdl_ptr = specpdl + count; | |
1628 | ||
570d7624 JB |
1629 | close (ifd); |
1630 | if (close (ofd) < 0) | |
1631 | report_file_error ("I/O error", Fcons (newname, Qnil)); | |
1632 | ||
1633 | UNGCPRO; | |
1634 | return Qnil; | |
1635 | } | |
1636 | ||
9bbe01fb | 1637 | DEFUN ("make-directory-internal", Fmake_directory_internal, |
353cfc19 | 1638 | Smake_directory_internal, 1, 1, 0, |
570d7624 JB |
1639 | "Create a directory. One argument, a file name string.") |
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); | |
32f4334d | 1648 | |
642ef245 | 1649 | handler = Ffind_file_name_handler (dirname); |
32f4334d | 1650 | if (!NILP (handler)) |
9bbe01fb RS |
1651 | return call3 (handler, Qmake_directory, dirname, Qnil); |
1652 | ||
570d7624 JB |
1653 | dir = XSTRING (dirname)->data; |
1654 | ||
1655 | if (mkdir (dir, 0777) != 0) | |
1656 | report_file_error ("Creating directory", Flist (1, &dirname)); | |
1657 | ||
32f4334d | 1658 | return Qnil; |
570d7624 JB |
1659 | } |
1660 | ||
aa734e17 RS |
1661 | DEFUN ("delete-directory", Fdelete_directory, Sdelete_directory, 1, 1, "FDelete directory: ", |
1662 | "Delete a directory. One argument, a file name string.") | |
570d7624 JB |
1663 | (dirname) |
1664 | Lisp_Object dirname; | |
1665 | { | |
1666 | unsigned char *dir; | |
32f4334d | 1667 | Lisp_Object handler; |
570d7624 JB |
1668 | |
1669 | CHECK_STRING (dirname, 0); | |
1670 | dirname = Fexpand_file_name (dirname, Qnil); | |
1671 | dir = XSTRING (dirname)->data; | |
1672 | ||
642ef245 | 1673 | handler = Ffind_file_name_handler (dirname); |
32f4334d RS |
1674 | if (!NILP (handler)) |
1675 | return call2 (handler, Qdelete_directory, dirname); | |
1676 | ||
570d7624 JB |
1677 | if (rmdir (dir) != 0) |
1678 | report_file_error ("Removing directory", Flist (1, &dirname)); | |
1679 | ||
1680 | return Qnil; | |
1681 | } | |
1682 | ||
1683 | DEFUN ("delete-file", Fdelete_file, Sdelete_file, 1, 1, "fDelete file: ", | |
1684 | "Delete specified file. One argument, a file name string.\n\ | |
1685 | If file has multiple names, it continues to exist with the other names.") | |
1686 | (filename) | |
1687 | Lisp_Object filename; | |
1688 | { | |
32f4334d | 1689 | Lisp_Object handler; |
570d7624 JB |
1690 | CHECK_STRING (filename, 0); |
1691 | filename = Fexpand_file_name (filename, Qnil); | |
32f4334d | 1692 | |
642ef245 | 1693 | handler = Ffind_file_name_handler (filename); |
32f4334d RS |
1694 | if (!NILP (handler)) |
1695 | return call2 (handler, Qdelete_file, filename); | |
1696 | ||
570d7624 JB |
1697 | if (0 > unlink (XSTRING (filename)->data)) |
1698 | report_file_error ("Removing old name", Flist (1, &filename)); | |
1699 | return Qnil; | |
1700 | } | |
1701 | ||
1702 | DEFUN ("rename-file", Frename_file, Srename_file, 2, 3, | |
1703 | "fRename file: \nFRename %s to file: \np", | |
1704 | "Rename FILE as NEWNAME. Both args strings.\n\ | |
1705 | If file has names other than FILE, it continues to have those names.\n\ | |
1706 | Signals a `file-already-exists' error if a file NEWNAME already exists\n\ | |
1707 | unless optional third argument OK-IF-ALREADY-EXISTS is non-nil.\n\ | |
1708 | A number as third arg means request confirmation if NEWNAME already exists.\n\ | |
1709 | This is what happens in interactive use with M-x.") | |
1710 | (filename, newname, ok_if_already_exists) | |
1711 | Lisp_Object filename, newname, ok_if_already_exists; | |
1712 | { | |
1713 | #ifdef NO_ARG_ARRAY | |
1714 | Lisp_Object args[2]; | |
1715 | #endif | |
32f4334d | 1716 | Lisp_Object handler; |
570d7624 JB |
1717 | struct gcpro gcpro1, gcpro2; |
1718 | ||
1719 | GCPRO2 (filename, newname); | |
1720 | CHECK_STRING (filename, 0); | |
1721 | CHECK_STRING (newname, 1); | |
1722 | filename = Fexpand_file_name (filename, Qnil); | |
1723 | newname = Fexpand_file_name (newname, Qnil); | |
32f4334d RS |
1724 | |
1725 | /* If the file name has special constructs in it, | |
1726 | call the corresponding file handler. */ | |
642ef245 | 1727 | handler = Ffind_file_name_handler (filename); |
32f4334d RS |
1728 | if (!NILP (handler)) |
1729 | return call3 (handler, Qrename_file, filename, newname); | |
1730 | ||
265a9e55 | 1731 | if (NILP (ok_if_already_exists) |
570d7624 JB |
1732 | || XTYPE (ok_if_already_exists) == Lisp_Int) |
1733 | barf_or_query_if_file_exists (newname, "rename to it", | |
1734 | XTYPE (ok_if_already_exists) == Lisp_Int); | |
1735 | #ifndef BSD4_1 | |
1736 | if (0 > rename (XSTRING (filename)->data, XSTRING (newname)->data)) | |
1737 | #else | |
1738 | if (0 > link (XSTRING (filename)->data, XSTRING (newname)->data) | |
1739 | || 0 > unlink (XSTRING (filename)->data)) | |
1740 | #endif | |
1741 | { | |
1742 | if (errno == EXDEV) | |
1743 | { | |
1744 | Fcopy_file (filename, newname, ok_if_already_exists, Qt); | |
1745 | Fdelete_file (filename); | |
1746 | } | |
1747 | else | |
1748 | #ifdef NO_ARG_ARRAY | |
1749 | { | |
1750 | args[0] = filename; | |
1751 | args[1] = newname; | |
1752 | report_file_error ("Renaming", Flist (2, args)); | |
1753 | } | |
1754 | #else | |
1755 | report_file_error ("Renaming", Flist (2, &filename)); | |
1756 | #endif | |
1757 | } | |
1758 | UNGCPRO; | |
1759 | return Qnil; | |
1760 | } | |
1761 | ||
1762 | DEFUN ("add-name-to-file", Fadd_name_to_file, Sadd_name_to_file, 2, 3, | |
1763 | "fAdd name to file: \nFName to add to %s: \np", | |
1764 | "Give FILE additional name NEWNAME. Both args strings.\n\ | |
1765 | Signals a `file-already-exists' error if a file NEWNAME already exists\n\ | |
1766 | unless optional third argument OK-IF-ALREADY-EXISTS is non-nil.\n\ | |
1767 | A number as third arg means request confirmation if NEWNAME already exists.\n\ | |
1768 | This is what happens in interactive use with M-x.") | |
1769 | (filename, newname, ok_if_already_exists) | |
1770 | Lisp_Object filename, newname, ok_if_already_exists; | |
1771 | { | |
1772 | #ifdef NO_ARG_ARRAY | |
1773 | Lisp_Object args[2]; | |
1774 | #endif | |
32f4334d | 1775 | Lisp_Object handler; |
570d7624 JB |
1776 | struct gcpro gcpro1, gcpro2; |
1777 | ||
1778 | GCPRO2 (filename, newname); | |
1779 | CHECK_STRING (filename, 0); | |
1780 | CHECK_STRING (newname, 1); | |
1781 | filename = Fexpand_file_name (filename, Qnil); | |
1782 | newname = Fexpand_file_name (newname, Qnil); | |
32f4334d RS |
1783 | |
1784 | /* If the file name has special constructs in it, | |
1785 | call the corresponding file handler. */ | |
642ef245 | 1786 | handler = Ffind_file_name_handler (filename); |
32f4334d RS |
1787 | if (!NILP (handler)) |
1788 | return call3 (handler, Qadd_name_to_file, filename, newname); | |
1789 | ||
265a9e55 | 1790 | if (NILP (ok_if_already_exists) |
570d7624 JB |
1791 | || XTYPE (ok_if_already_exists) == Lisp_Int) |
1792 | barf_or_query_if_file_exists (newname, "make it a new name", | |
1793 | XTYPE (ok_if_already_exists) == Lisp_Int); | |
1794 | unlink (XSTRING (newname)->data); | |
1795 | if (0 > link (XSTRING (filename)->data, XSTRING (newname)->data)) | |
1796 | { | |
1797 | #ifdef NO_ARG_ARRAY | |
1798 | args[0] = filename; | |
1799 | args[1] = newname; | |
1800 | report_file_error ("Adding new name", Flist (2, args)); | |
1801 | #else | |
1802 | report_file_error ("Adding new name", Flist (2, &filename)); | |
1803 | #endif | |
1804 | } | |
1805 | ||
1806 | UNGCPRO; | |
1807 | return Qnil; | |
1808 | } | |
1809 | ||
1810 | #ifdef S_IFLNK | |
1811 | DEFUN ("make-symbolic-link", Fmake_symbolic_link, Smake_symbolic_link, 2, 3, | |
1812 | "FMake symbolic link to file: \nFMake symbolic link to file %s: \np", | |
1813 | "Make a symbolic link to FILENAME, named LINKNAME. Both args strings.\n\ | |
1814 | Signals a `file-already-exists' error if a file NEWNAME already exists\n\ | |
1815 | unless optional third argument OK-IF-ALREADY-EXISTS is non-nil.\n\ | |
1816 | A number as third arg means request confirmation if NEWNAME already exists.\n\ | |
1817 | This happens for interactive use with M-x.") | |
e5d77022 JB |
1818 | (filename, linkname, ok_if_already_exists) |
1819 | Lisp_Object filename, linkname, ok_if_already_exists; | |
570d7624 JB |
1820 | { |
1821 | #ifdef NO_ARG_ARRAY | |
1822 | Lisp_Object args[2]; | |
1823 | #endif | |
32f4334d | 1824 | Lisp_Object handler; |
570d7624 JB |
1825 | struct gcpro gcpro1, gcpro2; |
1826 | ||
e5d77022 | 1827 | GCPRO2 (filename, linkname); |
570d7624 | 1828 | CHECK_STRING (filename, 0); |
e5d77022 | 1829 | CHECK_STRING (linkname, 1); |
570d7624 JB |
1830 | #if 0 /* This made it impossible to make a link to a relative name. */ |
1831 | filename = Fexpand_file_name (filename, Qnil); | |
1832 | #endif | |
e5d77022 | 1833 | linkname = Fexpand_file_name (linkname, Qnil); |
32f4334d RS |
1834 | |
1835 | /* If the file name has special constructs in it, | |
1836 | call the corresponding file handler. */ | |
642ef245 | 1837 | handler = Ffind_file_name_handler (filename); |
32f4334d | 1838 | if (!NILP (handler)) |
3eac9910 | 1839 | return call3 (handler, Qmake_symbolic_link, filename, linkname); |
32f4334d | 1840 | |
265a9e55 | 1841 | if (NILP (ok_if_already_exists) |
570d7624 | 1842 | || XTYPE (ok_if_already_exists) == Lisp_Int) |
e5d77022 | 1843 | barf_or_query_if_file_exists (linkname, "make it a link", |
570d7624 | 1844 | XTYPE (ok_if_already_exists) == Lisp_Int); |
e5d77022 | 1845 | if (0 > symlink (XSTRING (filename)->data, XSTRING (linkname)->data)) |
570d7624 JB |
1846 | { |
1847 | /* If we didn't complain already, silently delete existing file. */ | |
1848 | if (errno == EEXIST) | |
1849 | { | |
1850 | unlink (XSTRING (filename)->data); | |
e5d77022 | 1851 | if (0 <= symlink (XSTRING (filename)->data, XSTRING (linkname)->data)) |
570d7624 JB |
1852 | return Qnil; |
1853 | } | |
1854 | ||
1855 | #ifdef NO_ARG_ARRAY | |
1856 | args[0] = filename; | |
e5d77022 | 1857 | args[1] = linkname; |
570d7624 JB |
1858 | report_file_error ("Making symbolic link", Flist (2, args)); |
1859 | #else | |
1860 | report_file_error ("Making symbolic link", Flist (2, &filename)); | |
1861 | #endif | |
1862 | } | |
1863 | UNGCPRO; | |
1864 | return Qnil; | |
1865 | } | |
1866 | #endif /* S_IFLNK */ | |
1867 | ||
1868 | #ifdef VMS | |
1869 | ||
1870 | DEFUN ("define-logical-name", Fdefine_logical_name, Sdefine_logical_name, | |
1871 | 2, 2, "sDefine logical name: \nsDefine logical name %s as: ", | |
1872 | "Define the job-wide logical name NAME to have the value STRING.\n\ | |
1873 | If STRING is nil or a null string, the logical name NAME is deleted.") | |
1874 | (varname, string) | |
1875 | Lisp_Object varname; | |
1876 | Lisp_Object string; | |
1877 | { | |
1878 | CHECK_STRING (varname, 0); | |
265a9e55 | 1879 | if (NILP (string)) |
570d7624 JB |
1880 | delete_logical_name (XSTRING (varname)->data); |
1881 | else | |
1882 | { | |
1883 | CHECK_STRING (string, 1); | |
1884 | ||
1885 | if (XSTRING (string)->size == 0) | |
1886 | delete_logical_name (XSTRING (varname)->data); | |
1887 | else | |
1888 | define_logical_name (XSTRING (varname)->data, XSTRING (string)->data); | |
1889 | } | |
1890 | ||
1891 | return string; | |
1892 | } | |
1893 | #endif /* VMS */ | |
1894 | ||
1895 | #ifdef HPUX_NET | |
1896 | ||
1897 | DEFUN ("sysnetunam", Fsysnetunam, Ssysnetunam, 2, 2, 0, | |
1898 | "Open a network connection to PATH using LOGIN as the login string.") | |
1899 | (path, login) | |
1900 | Lisp_Object path, login; | |
1901 | { | |
1902 | int netresult; | |
1903 | ||
1904 | CHECK_STRING (path, 0); | |
1905 | CHECK_STRING (login, 0); | |
1906 | ||
1907 | netresult = netunam (XSTRING (path)->data, XSTRING (login)->data); | |
1908 | ||
1909 | if (netresult == -1) | |
1910 | return Qnil; | |
1911 | else | |
1912 | return Qt; | |
1913 | } | |
1914 | #endif /* HPUX_NET */ | |
1915 | \f | |
1916 | DEFUN ("file-name-absolute-p", Ffile_name_absolute_p, Sfile_name_absolute_p, | |
1917 | 1, 1, 0, | |
1918 | "Return t if file FILENAME specifies an absolute path name.\n\ | |
1919 | On Unix, this is a name starting with a `/' or a `~'.") | |
1920 | (filename) | |
1921 | Lisp_Object filename; | |
1922 | { | |
1923 | unsigned char *ptr; | |
1924 | ||
1925 | CHECK_STRING (filename, 0); | |
1926 | ptr = XSTRING (filename)->data; | |
1927 | if (*ptr == '/' || *ptr == '~' | |
1928 | #ifdef VMS | |
1929 | /* ??? This criterion is probably wrong for '<'. */ | |
1930 | || index (ptr, ':') || index (ptr, '<') | |
1931 | || (*ptr == '[' && (ptr[1] != '-' || (ptr[2] != '.' && ptr[2] != ']')) | |
1932 | && ptr[1] != '.') | |
1933 | #endif /* VMS */ | |
1934 | ) | |
1935 | return Qt; | |
1936 | else | |
1937 | return Qnil; | |
1938 | } | |
1939 | ||
1940 | DEFUN ("file-exists-p", Ffile_exists_p, Sfile_exists_p, 1, 1, 0, | |
1941 | "Return t if file FILENAME exists. (This does not mean you can read it.)\n\ | |
1942 | See also `file-readable-p' and `file-attributes'.") | |
1943 | (filename) | |
1944 | Lisp_Object filename; | |
1945 | { | |
1946 | Lisp_Object abspath; | |
32f4334d | 1947 | Lisp_Object handler; |
570d7624 JB |
1948 | |
1949 | CHECK_STRING (filename, 0); | |
1950 | abspath = Fexpand_file_name (filename, Qnil); | |
32f4334d RS |
1951 | |
1952 | /* If the file name has special constructs in it, | |
1953 | call the corresponding file handler. */ | |
642ef245 | 1954 | handler = Ffind_file_name_handler (abspath); |
32f4334d | 1955 | if (!NILP (handler)) |
09121adc | 1956 | return call2 (handler, Qfile_exists_p, abspath); |
32f4334d | 1957 | |
570d7624 JB |
1958 | return (access (XSTRING (abspath)->data, 0) >= 0) ? Qt : Qnil; |
1959 | } | |
1960 | ||
1961 | DEFUN ("file-executable-p", Ffile_executable_p, Sfile_executable_p, 1, 1, 0, | |
1962 | "Return t if FILENAME can be executed by you.\n\ | |
8b235fde | 1963 | For a directory, this means you can access files in that directory.") |
570d7624 JB |
1964 | (filename) |
1965 | Lisp_Object filename; | |
1966 | ||
1967 | { | |
1968 | Lisp_Object abspath; | |
32f4334d | 1969 | Lisp_Object handler; |
570d7624 JB |
1970 | |
1971 | CHECK_STRING (filename, 0); | |
1972 | abspath = Fexpand_file_name (filename, Qnil); | |
32f4334d RS |
1973 | |
1974 | /* If the file name has special constructs in it, | |
1975 | call the corresponding file handler. */ | |
642ef245 | 1976 | handler = Ffind_file_name_handler (abspath); |
32f4334d | 1977 | if (!NILP (handler)) |
09121adc | 1978 | return call2 (handler, Qfile_executable_p, abspath); |
32f4334d | 1979 | |
570d7624 JB |
1980 | return (access (XSTRING (abspath)->data, 1) >= 0) ? Qt : Qnil; |
1981 | } | |
1982 | ||
1983 | DEFUN ("file-readable-p", Ffile_readable_p, Sfile_readable_p, 1, 1, 0, | |
1984 | "Return t if file FILENAME exists and you can read it.\n\ | |
1985 | See also `file-exists-p' and `file-attributes'.") | |
1986 | (filename) | |
1987 | Lisp_Object filename; | |
1988 | { | |
1989 | Lisp_Object abspath; | |
32f4334d | 1990 | Lisp_Object handler; |
570d7624 JB |
1991 | |
1992 | CHECK_STRING (filename, 0); | |
1993 | abspath = Fexpand_file_name (filename, Qnil); | |
32f4334d RS |
1994 | |
1995 | /* If the file name has special constructs in it, | |
1996 | call the corresponding file handler. */ | |
642ef245 | 1997 | handler = Ffind_file_name_handler (abspath); |
32f4334d | 1998 | if (!NILP (handler)) |
09121adc | 1999 | return call2 (handler, Qfile_readable_p, abspath); |
32f4334d | 2000 | |
570d7624 JB |
2001 | return (access (XSTRING (abspath)->data, 4) >= 0) ? Qt : Qnil; |
2002 | } | |
2003 | ||
2004 | DEFUN ("file-symlink-p", Ffile_symlink_p, Sfile_symlink_p, 1, 1, 0, | |
2005 | "If file FILENAME is the name of a symbolic link\n\ | |
2006 | returns the name of the file to which it is linked.\n\ | |
2007 | Otherwise returns NIL.") | |
2008 | (filename) | |
2009 | Lisp_Object filename; | |
2010 | { | |
2011 | #ifdef S_IFLNK | |
2012 | char *buf; | |
2013 | int bufsize; | |
2014 | int valsize; | |
2015 | Lisp_Object val; | |
32f4334d | 2016 | Lisp_Object handler; |
570d7624 JB |
2017 | |
2018 | CHECK_STRING (filename, 0); | |
2019 | filename = Fexpand_file_name (filename, Qnil); | |
2020 | ||
32f4334d RS |
2021 | /* If the file name has special constructs in it, |
2022 | call the corresponding file handler. */ | |
642ef245 | 2023 | handler = Ffind_file_name_handler (filename); |
32f4334d RS |
2024 | if (!NILP (handler)) |
2025 | return call2 (handler, Qfile_symlink_p, filename); | |
2026 | ||
570d7624 JB |
2027 | bufsize = 100; |
2028 | while (1) | |
2029 | { | |
2030 | buf = (char *) xmalloc (bufsize); | |
2031 | bzero (buf, bufsize); | |
2032 | valsize = readlink (XSTRING (filename)->data, buf, bufsize); | |
2033 | if (valsize < bufsize) break; | |
2034 | /* Buffer was not long enough */ | |
2035 | free (buf); | |
2036 | bufsize *= 2; | |
2037 | } | |
2038 | if (valsize == -1) | |
2039 | { | |
2040 | free (buf); | |
2041 | return Qnil; | |
2042 | } | |
2043 | val = make_string (buf, valsize); | |
2044 | free (buf); | |
2045 | return val; | |
2046 | #else /* not S_IFLNK */ | |
2047 | return Qnil; | |
2048 | #endif /* not S_IFLNK */ | |
2049 | } | |
2050 | ||
2051 | /* Having this before file-symlink-p mysteriously caused it to be forgotten | |
2052 | on the RT/PC. */ | |
2053 | DEFUN ("file-writable-p", Ffile_writable_p, Sfile_writable_p, 1, 1, 0, | |
2054 | "Return t if file FILENAME can be written or created by you.") | |
2055 | (filename) | |
2056 | Lisp_Object filename; | |
2057 | { | |
2058 | Lisp_Object abspath, dir; | |
32f4334d | 2059 | Lisp_Object handler; |
570d7624 JB |
2060 | |
2061 | CHECK_STRING (filename, 0); | |
2062 | abspath = Fexpand_file_name (filename, Qnil); | |
32f4334d RS |
2063 | |
2064 | /* If the file name has special constructs in it, | |
2065 | call the corresponding file handler. */ | |
642ef245 | 2066 | handler = Ffind_file_name_handler (abspath); |
32f4334d | 2067 | if (!NILP (handler)) |
09121adc | 2068 | return call2 (handler, Qfile_writable_p, abspath); |
32f4334d | 2069 | |
570d7624 JB |
2070 | if (access (XSTRING (abspath)->data, 0) >= 0) |
2071 | return (access (XSTRING (abspath)->data, 2) >= 0) ? Qt : Qnil; | |
2072 | dir = Ffile_name_directory (abspath); | |
2073 | #ifdef VMS | |
265a9e55 | 2074 | if (!NILP (dir)) |
570d7624 JB |
2075 | dir = Fdirectory_file_name (dir); |
2076 | #endif /* VMS */ | |
265a9e55 | 2077 | return (access (!NILP (dir) ? (char *) XSTRING (dir)->data : "", 2) >= 0 |
570d7624 JB |
2078 | ? Qt : Qnil); |
2079 | } | |
2080 | ||
2081 | DEFUN ("file-directory-p", Ffile_directory_p, Sfile_directory_p, 1, 1, 0, | |
2082 | "Return t if file FILENAME is the name of a directory as a file.\n\ | |
2083 | A directory name spec may be given instead; then the value is t\n\ | |
2084 | if the directory so specified exists and really is a directory.") | |
2085 | (filename) | |
2086 | Lisp_Object filename; | |
2087 | { | |
2088 | register Lisp_Object abspath; | |
2089 | struct stat st; | |
32f4334d | 2090 | Lisp_Object handler; |
570d7624 JB |
2091 | |
2092 | abspath = expand_and_dir_to_file (filename, current_buffer->directory); | |
2093 | ||
32f4334d RS |
2094 | /* If the file name has special constructs in it, |
2095 | call the corresponding file handler. */ | |
642ef245 | 2096 | handler = Ffind_file_name_handler (abspath); |
32f4334d | 2097 | if (!NILP (handler)) |
09121adc | 2098 | return call2 (handler, Qfile_directory_p, abspath); |
32f4334d | 2099 | |
570d7624 JB |
2100 | if (stat (XSTRING (abspath)->data, &st) < 0) |
2101 | return Qnil; | |
2102 | return (st.st_mode & S_IFMT) == S_IFDIR ? Qt : Qnil; | |
2103 | } | |
2104 | ||
b72dea2a JB |
2105 | DEFUN ("file-accessible-directory-p", Ffile_accessible_directory_p, Sfile_accessible_directory_p, 1, 1, 0, |
2106 | "Return t if file FILENAME is the name of a directory as a file,\n\ | |
2107 | and files in that directory can be opened by you. In order to use a\n\ | |
2108 | directory as a buffer's current directory, this predicate must return true.\n\ | |
2109 | A directory name spec may be given instead; then the value is t\n\ | |
2110 | if the directory so specified exists and really is a readable and\n\ | |
2111 | searchable directory.") | |
2112 | (filename) | |
2113 | Lisp_Object filename; | |
2114 | { | |
32f4334d RS |
2115 | Lisp_Object handler; |
2116 | ||
2117 | /* If the file name has special constructs in it, | |
2118 | call the corresponding file handler. */ | |
642ef245 | 2119 | handler = Ffind_file_name_handler (filename); |
32f4334d RS |
2120 | if (!NILP (handler)) |
2121 | return call2 (handler, Qfile_accessible_directory_p, filename); | |
2122 | ||
b72dea2a JB |
2123 | if (NILP (Ffile_directory_p (filename)) |
2124 | || NILP (Ffile_executable_p (filename))) | |
2125 | return Qnil; | |
2126 | else | |
2127 | return Qt; | |
2128 | } | |
2129 | ||
570d7624 JB |
2130 | DEFUN ("file-modes", Ffile_modes, Sfile_modes, 1, 1, 0, |
2131 | "Return mode bits of FILE, as an integer.") | |
2132 | (filename) | |
2133 | Lisp_Object filename; | |
2134 | { | |
2135 | Lisp_Object abspath; | |
2136 | struct stat st; | |
32f4334d | 2137 | Lisp_Object handler; |
570d7624 JB |
2138 | |
2139 | abspath = expand_and_dir_to_file (filename, current_buffer->directory); | |
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 call2 (handler, Qfile_modes, abspath); |
32f4334d | 2146 | |
570d7624 JB |
2147 | if (stat (XSTRING (abspath)->data, &st) < 0) |
2148 | return Qnil; | |
2149 | return make_number (st.st_mode & 07777); | |
2150 | } | |
2151 | ||
2152 | DEFUN ("set-file-modes", Fset_file_modes, Sset_file_modes, 2, 2, 0, | |
2153 | "Set mode bits of FILE to MODE (an integer).\n\ | |
2154 | Only the 12 low bits of MODE are used.") | |
2155 | (filename, mode) | |
2156 | Lisp_Object filename, mode; | |
2157 | { | |
2158 | Lisp_Object abspath; | |
32f4334d | 2159 | Lisp_Object handler; |
570d7624 JB |
2160 | |
2161 | abspath = Fexpand_file_name (filename, current_buffer->directory); | |
2162 | CHECK_NUMBER (mode, 1); | |
2163 | ||
32f4334d RS |
2164 | /* If the file name has special constructs in it, |
2165 | call the corresponding file handler. */ | |
642ef245 | 2166 | handler = Ffind_file_name_handler (abspath); |
32f4334d | 2167 | if (!NILP (handler)) |
09121adc | 2168 | return call3 (handler, Qset_file_modes, abspath, mode); |
32f4334d | 2169 | |
570d7624 JB |
2170 | #ifndef APOLLO |
2171 | if (chmod (XSTRING (abspath)->data, XINT (mode)) < 0) | |
2172 | report_file_error ("Doing chmod", Fcons (abspath, Qnil)); | |
2173 | #else /* APOLLO */ | |
2174 | if (!egetenv ("USE_DOMAIN_ACLS")) | |
2175 | { | |
2176 | struct stat st; | |
2177 | struct timeval tvp[2]; | |
2178 | ||
2179 | /* chmod on apollo also change the file's modtime; need to save the | |
2180 | modtime and then restore it. */ | |
2181 | if (stat (XSTRING (abspath)->data, &st) < 0) | |
2182 | { | |
2183 | report_file_error ("Doing chmod", Fcons (abspath, Qnil)); | |
2184 | return (Qnil); | |
2185 | } | |
2186 | ||
2187 | if (chmod (XSTRING (abspath)->data, XINT (mode)) < 0) | |
2188 | report_file_error ("Doing chmod", Fcons (abspath, Qnil)); | |
2189 | ||
2190 | /* reset the old accessed and modified times. */ | |
2191 | tvp[0].tv_sec = st.st_atime + 1; /* +1 due to an Apollo roundoff bug */ | |
2192 | tvp[0].tv_usec = 0; | |
2193 | tvp[1].tv_sec = st.st_mtime + 1; /* +1 due to an Apollo roundoff bug */ | |
2194 | tvp[1].tv_usec = 0; | |
2195 | ||
2196 | if (utimes (XSTRING (abspath)->data, tvp) < 0) | |
2197 | report_file_error ("Doing utimes", Fcons (abspath, Qnil)); | |
2198 | } | |
2199 | #endif /* APOLLO */ | |
2200 | ||
2201 | return Qnil; | |
2202 | } | |
2203 | ||
c24e9a53 | 2204 | DEFUN ("set-default-file-modes", Fset_default_file_modes, Sset_default_file_modes, 1, 1, 0, |
5f85ea58 RS |
2205 | "Set the file permission bits for newly created files.\n\ |
2206 | The argument MODE should be an integer; only the low 9 bits are used.\n\ | |
36a8c287 | 2207 | This setting is inherited by subprocesses.") |
5f85ea58 RS |
2208 | (mode) |
2209 | Lisp_Object mode; | |
36a8c287 | 2210 | { |
5f85ea58 | 2211 | CHECK_NUMBER (mode, 0); |
36a8c287 | 2212 | |
5f85ea58 | 2213 | umask ((~ XINT (mode)) & 0777); |
36a8c287 JB |
2214 | |
2215 | return Qnil; | |
2216 | } | |
2217 | ||
c24e9a53 | 2218 | DEFUN ("default-file-modes", Fdefault_file_modes, Sdefault_file_modes, 0, 0, 0, |
5f85ea58 RS |
2219 | "Return the default file protection for created files.\n\ |
2220 | The value is an integer.") | |
36a8c287 JB |
2221 | () |
2222 | { | |
5f85ea58 RS |
2223 | int realmask; |
2224 | Lisp_Object value; | |
36a8c287 | 2225 | |
5f85ea58 RS |
2226 | realmask = umask (0); |
2227 | umask (realmask); | |
36a8c287 | 2228 | |
5f85ea58 RS |
2229 | XSET (value, Lisp_Int, (~ realmask) & 0777); |
2230 | return value; | |
36a8c287 JB |
2231 | } |
2232 | ||
85ffea93 RS |
2233 | #ifdef unix |
2234 | ||
2235 | DEFUN ("unix-sync", Funix_sync, Sunix_sync, 0, 0, "", | |
2236 | "Tell Unix to finish all pending disk updates.") | |
2237 | () | |
2238 | { | |
2239 | sync (); | |
2240 | return Qnil; | |
2241 | } | |
2242 | ||
2243 | #endif /* unix */ | |
2244 | ||
570d7624 JB |
2245 | DEFUN ("file-newer-than-file-p", Ffile_newer_than_file_p, Sfile_newer_than_file_p, 2, 2, 0, |
2246 | "Return t if file FILE1 is newer than file FILE2.\n\ | |
2247 | If FILE1 does not exist, the answer is nil;\n\ | |
2248 | otherwise, if FILE2 does not exist, the answer is t.") | |
2249 | (file1, file2) | |
2250 | Lisp_Object file1, file2; | |
2251 | { | |
32f4334d | 2252 | Lisp_Object abspath1, abspath2; |
570d7624 JB |
2253 | struct stat st; |
2254 | int mtime1; | |
32f4334d | 2255 | Lisp_Object handler; |
09121adc | 2256 | struct gcpro gcpro1, gcpro2; |
570d7624 JB |
2257 | |
2258 | CHECK_STRING (file1, 0); | |
2259 | CHECK_STRING (file2, 0); | |
2260 | ||
09121adc RS |
2261 | abspath1 = Qnil; |
2262 | GCPRO2 (abspath1, file2); | |
32f4334d RS |
2263 | abspath1 = expand_and_dir_to_file (file1, current_buffer->directory); |
2264 | abspath2 = expand_and_dir_to_file (file2, current_buffer->directory); | |
09121adc | 2265 | UNGCPRO; |
570d7624 | 2266 | |
32f4334d RS |
2267 | /* If the file name has special constructs in it, |
2268 | call the corresponding file handler. */ | |
642ef245 | 2269 | handler = Ffind_file_name_handler (abspath1); |
32f4334d RS |
2270 | if (!NILP (handler)) |
2271 | return call3 (handler, Qfile_newer_than_file_p, abspath1, abspath2); | |
2272 | ||
2273 | if (stat (XSTRING (abspath1)->data, &st) < 0) | |
570d7624 JB |
2274 | return Qnil; |
2275 | ||
2276 | mtime1 = st.st_mtime; | |
2277 | ||
32f4334d | 2278 | if (stat (XSTRING (abspath2)->data, &st) < 0) |
570d7624 JB |
2279 | return Qt; |
2280 | ||
2281 | return (mtime1 > st.st_mtime) ? Qt : Qnil; | |
2282 | } | |
2283 | \f | |
570d7624 JB |
2284 | DEFUN ("insert-file-contents", Finsert_file_contents, Sinsert_file_contents, |
2285 | 1, 2, 0, | |
2286 | "Insert contents of file FILENAME after point.\n\ | |
2287 | Returns list of absolute pathname and length of data inserted.\n\ | |
2288 | If second argument VISIT is non-nil, the buffer's visited filename\n\ | |
2289 | and last save file modtime are set, and it is marked unmodified.\n\ | |
2290 | If visiting and the file does not exist, visiting is completed\n\ | |
2291 | before the error is signaled.") | |
2292 | (filename, visit) | |
2293 | Lisp_Object filename, visit; | |
2294 | { | |
2295 | struct stat st; | |
2296 | register int fd; | |
2297 | register int inserted = 0; | |
2298 | register int how_much; | |
2299 | int count = specpdl_ptr - specpdl; | |
2300 | struct gcpro gcpro1; | |
32f4334d RS |
2301 | Lisp_Object handler, val; |
2302 | ||
2303 | val = Qnil; | |
2304 | ||
570d7624 | 2305 | GCPRO1 (filename); |
265a9e55 | 2306 | if (!NILP (current_buffer->read_only)) |
570d7624 JB |
2307 | Fbarf_if_buffer_read_only(); |
2308 | ||
2309 | CHECK_STRING (filename, 0); | |
2310 | filename = Fexpand_file_name (filename, Qnil); | |
2311 | ||
32f4334d RS |
2312 | /* If the file name has special constructs in it, |
2313 | call the corresponding file handler. */ | |
642ef245 | 2314 | handler = Ffind_file_name_handler (filename); |
32f4334d RS |
2315 | if (!NILP (handler)) |
2316 | { | |
2317 | val = call3 (handler, Qinsert_file_contents, filename, visit); | |
2318 | st.st_mtime = 0; | |
2319 | goto handled; | |
2320 | } | |
2321 | ||
570d7624 JB |
2322 | fd = -1; |
2323 | ||
2324 | #ifndef APOLLO | |
2325 | if (stat (XSTRING (filename)->data, &st) < 0 | |
349a7710 | 2326 | || (fd = open (XSTRING (filename)->data, 0)) < 0) |
570d7624 JB |
2327 | #else |
2328 | if ((fd = open (XSTRING (filename)->data, 0)) < 0 | |
2329 | || fstat (fd, &st) < 0) | |
2330 | #endif /* not APOLLO */ | |
2331 | { | |
2332 | if (fd >= 0) close (fd); | |
265a9e55 | 2333 | if (NILP (visit)) |
570d7624 JB |
2334 | report_file_error ("Opening input file", Fcons (filename, Qnil)); |
2335 | st.st_mtime = -1; | |
2336 | how_much = 0; | |
2337 | goto notfound; | |
2338 | } | |
2339 | ||
2340 | record_unwind_protect (close_file_unwind, make_number (fd)); | |
2341 | ||
be53b411 JB |
2342 | #ifdef S_IFSOCK |
2343 | /* This code will need to be changed in order to work on named | |
2344 | pipes, and it's probably just not worth it. So we should at | |
2345 | least signal an error. */ | |
2346 | if ((st.st_mode & S_IFMT) == S_IFSOCK) | |
2347 | Fsignal (Qfile_error, | |
2348 | Fcons (build_string ("reading from named pipe"), | |
2349 | Fcons (filename, Qnil))); | |
2350 | #endif | |
2351 | ||
570d7624 JB |
2352 | /* Supposedly happens on VMS. */ |
2353 | if (st.st_size < 0) | |
2354 | error ("File size is negative"); | |
be53b411 | 2355 | |
570d7624 JB |
2356 | { |
2357 | register Lisp_Object temp; | |
2358 | ||
2359 | /* Make sure point-max won't overflow after this insertion. */ | |
2360 | XSET (temp, Lisp_Int, st.st_size + Z); | |
2361 | if (st.st_size + Z != XINT (temp)) | |
2362 | error ("maximum buffer size exceeded"); | |
2363 | } | |
2364 | ||
265a9e55 | 2365 | if (NILP (visit)) |
570d7624 JB |
2366 | prepare_to_modify_buffer (point, point); |
2367 | ||
2368 | move_gap (point); | |
2369 | if (GAP_SIZE < st.st_size) | |
2370 | make_gap (st.st_size - GAP_SIZE); | |
2371 | ||
2372 | while (1) | |
2373 | { | |
2374 | int try = min (st.st_size - inserted, 64 << 10); | |
b5148e85 RS |
2375 | int this; |
2376 | ||
2377 | /* Allow quitting out of the actual I/O. */ | |
2378 | immediate_quit = 1; | |
2379 | QUIT; | |
2380 | this = read (fd, &FETCH_CHAR (point + inserted - 1) + 1, try); | |
2381 | immediate_quit = 0; | |
570d7624 JB |
2382 | |
2383 | if (this <= 0) | |
2384 | { | |
2385 | how_much = this; | |
2386 | break; | |
2387 | } | |
2388 | ||
2389 | GPT += this; | |
2390 | GAP_SIZE -= this; | |
2391 | ZV += this; | |
2392 | Z += this; | |
2393 | inserted += this; | |
2394 | } | |
2395 | ||
2396 | if (inserted > 0) | |
7d8451f1 RS |
2397 | { |
2398 | record_insert (point, inserted); | |
8d4e077b JA |
2399 | |
2400 | /* Only defined if Emacs is compiled with USE_TEXT_PROPERTIES */ | |
2401 | offset_intervals (current_buffer, point, inserted); | |
7d8451f1 RS |
2402 | MODIFF++; |
2403 | } | |
570d7624 JB |
2404 | |
2405 | close (fd); | |
2406 | ||
2407 | /* Discard the unwind protect */ | |
2408 | specpdl_ptr = specpdl + count; | |
2409 | ||
2410 | if (how_much < 0) | |
2411 | error ("IO error reading %s: %s", | |
2412 | XSTRING (filename)->data, err_str (errno)); | |
2413 | ||
2414 | notfound: | |
32f4334d | 2415 | handled: |
570d7624 | 2416 | |
265a9e55 | 2417 | if (!NILP (visit)) |
570d7624 JB |
2418 | { |
2419 | current_buffer->undo_list = Qnil; | |
2420 | #ifdef APOLLO | |
2421 | stat (XSTRING (filename)->data, &st); | |
2422 | #endif | |
2423 | current_buffer->modtime = st.st_mtime; | |
2424 | current_buffer->save_modified = MODIFF; | |
2425 | current_buffer->auto_save_modified = MODIFF; | |
2426 | XFASTINT (current_buffer->save_length) = Z - BEG; | |
2427 | #ifdef CLASH_DETECTION | |
32f4334d RS |
2428 | if (NILP (handler)) |
2429 | { | |
2430 | if (!NILP (current_buffer->filename)) | |
2431 | unlock_file (current_buffer->filename); | |
2432 | unlock_file (filename); | |
2433 | } | |
570d7624 JB |
2434 | #endif /* CLASH_DETECTION */ |
2435 | current_buffer->filename = filename; | |
2436 | /* If visiting nonexistent file, return nil. */ | |
32f4334d | 2437 | if (current_buffer->modtime == -1) |
570d7624 JB |
2438 | report_file_error ("Opening input file", Fcons (filename, Qnil)); |
2439 | } | |
2440 | ||
2441 | signal_after_change (point, 0, inserted); | |
2442 | ||
32f4334d RS |
2443 | if (!NILP (val)) |
2444 | RETURN_UNGCPRO (val); | |
9b7828a5 JB |
2445 | RETURN_UNGCPRO (Fcons (filename, |
2446 | Fcons (make_number (inserted), | |
2447 | Qnil))); | |
570d7624 JB |
2448 | } |
2449 | ||
2450 | DEFUN ("write-region", Fwrite_region, Swrite_region, 3, 5, | |
2451 | "r\nFWrite region to file: ", | |
2452 | "Write current region into specified file.\n\ | |
2453 | When called from a program, takes three arguments:\n\ | |
2454 | START, END and FILENAME. START and END are buffer positions.\n\ | |
2455 | Optional fourth argument APPEND if non-nil means\n\ | |
2456 | append to existing file contents (if any).\n\ | |
2457 | Optional fifth argument VISIT if t means\n\ | |
2458 | set the last-save-file-modtime of buffer to this file's modtime\n\ | |
2459 | and mark buffer not modified.\n\ | |
3b7792ed RS |
2460 | If VISIT is a string, it is a second file name;\n\ |
2461 | the output goes to FILENAME, but the buffer is marked as visiting VISIT.\n\ | |
2462 | VISIT is also the file name to lock and unlock for clash detection.\n\ | |
1d386d28 RS |
2463 | If VISIT is neither t nor nil nor a string,\n\ |
2464 | that means do not print the \"Wrote file\" message.\n\ | |
570d7624 JB |
2465 | Kludgy feature: if START is a string, then that string is written\n\ |
2466 | to the file, instead of any buffer contents, and END is ignored.") | |
2467 | (start, end, filename, append, visit) | |
2468 | Lisp_Object start, end, filename, append, visit; | |
2469 | { | |
2470 | register int desc; | |
2471 | int failure; | |
2472 | int save_errno; | |
2473 | unsigned char *fn; | |
2474 | struct stat st; | |
2475 | int tem; | |
2476 | int count = specpdl_ptr - specpdl; | |
2477 | #ifdef VMS | |
2478 | unsigned char *fname = 0; /* If non-0, original filename (must rename) */ | |
2479 | #endif /* VMS */ | |
3eac9910 | 2480 | Lisp_Object handler; |
3b7792ed RS |
2481 | Lisp_Object visit_file = XTYPE (visit) == Lisp_String ? visit : filename; |
2482 | struct gcpro gcpro1, gcpro2, gcpro3, gcpro4; | |
570d7624 JB |
2483 | |
2484 | /* Special kludge to simplify auto-saving */ | |
265a9e55 | 2485 | if (NILP (start)) |
570d7624 JB |
2486 | { |
2487 | XFASTINT (start) = BEG; | |
2488 | XFASTINT (end) = Z; | |
2489 | } | |
2490 | else if (XTYPE (start) != Lisp_String) | |
2491 | validate_region (&start, &end); | |
2492 | ||
3b7792ed | 2493 | GCPRO4 (start, filename, visit, visit_file); |
570d7624 | 2494 | filename = Fexpand_file_name (filename, Qnil); |
570d7624 | 2495 | |
32f4334d RS |
2496 | /* If the file name has special constructs in it, |
2497 | call the corresponding file handler. */ | |
642ef245 | 2498 | handler = Ffind_file_name_handler (filename); |
3eac9910 | 2499 | |
32f4334d RS |
2500 | if (!NILP (handler)) |
2501 | { | |
2502 | Lisp_Object args[7]; | |
2503 | Lisp_Object val; | |
2504 | args[0] = handler; | |
2505 | args[1] = Qwrite_region; | |
2506 | args[2] = start; | |
2507 | args[3] = end; | |
2508 | args[4] = filename; | |
2509 | args[5] = append; | |
2510 | args[6] = visit; | |
2511 | val = Ffuncall (7, args); | |
2512 | ||
2513 | /* Do this before reporting IO error | |
2514 | to avoid a "file has changed on disk" warning on | |
2515 | next attempt to save. */ | |
3b7792ed | 2516 | if (EQ (visit, Qt) || XTYPE (visit) == Lisp_String) |
32f4334d RS |
2517 | { |
2518 | current_buffer->modtime = 0; | |
2519 | current_buffer->save_modified = MODIFF; | |
2520 | XFASTINT (current_buffer->save_length) = Z - BEG; | |
3b7792ed | 2521 | current_buffer->filename = visit_file; |
32f4334d | 2522 | } |
09121adc | 2523 | UNGCPRO; |
32f4334d RS |
2524 | return val; |
2525 | } | |
2526 | ||
570d7624 JB |
2527 | #ifdef CLASH_DETECTION |
2528 | if (!auto_saving) | |
3b7792ed | 2529 | lock_file (visit_file); |
570d7624 JB |
2530 | #endif /* CLASH_DETECTION */ |
2531 | ||
09121adc | 2532 | fn = XSTRING (filename)->data; |
570d7624 | 2533 | desc = -1; |
265a9e55 | 2534 | if (!NILP (append)) |
570d7624 JB |
2535 | desc = open (fn, O_WRONLY); |
2536 | ||
2537 | if (desc < 0) | |
2538 | #ifdef VMS | |
2539 | if (auto_saving) /* Overwrite any previous version of autosave file */ | |
2540 | { | |
2541 | vms_truncate (fn); /* if fn exists, truncate to zero length */ | |
2542 | desc = open (fn, O_RDWR); | |
2543 | if (desc < 0) | |
2544 | desc = creat_copy_attrs (XTYPE (current_buffer->filename) == Lisp_String | |
b72dea2a JB |
2545 | ? XSTRING (current_buffer->filename)->data : 0, |
2546 | fn); | |
570d7624 JB |
2547 | } |
2548 | else /* Write to temporary name and rename if no errors */ | |
2549 | { | |
2550 | Lisp_Object temp_name; | |
2551 | temp_name = Ffile_name_directory (filename); | |
2552 | ||
265a9e55 | 2553 | if (!NILP (temp_name)) |
570d7624 JB |
2554 | { |
2555 | temp_name = Fmake_temp_name (concat2 (temp_name, | |
2556 | build_string ("$$SAVE$$"))); | |
2557 | fname = XSTRING (filename)->data; | |
2558 | fn = XSTRING (temp_name)->data; | |
2559 | desc = creat_copy_attrs (fname, fn); | |
2560 | if (desc < 0) | |
2561 | { | |
2562 | /* If we can't open the temporary file, try creating a new | |
2563 | version of the original file. VMS "creat" creates a | |
2564 | new version rather than truncating an existing file. */ | |
2565 | fn = fname; | |
2566 | fname = 0; | |
2567 | desc = creat (fn, 0666); | |
2568 | #if 0 /* This can clobber an existing file and fail to replace it, | |
2569 | if the user runs out of space. */ | |
2570 | if (desc < 0) | |
2571 | { | |
2572 | /* We can't make a new version; | |
2573 | try to truncate and rewrite existing version if any. */ | |
2574 | vms_truncate (fn); | |
2575 | desc = open (fn, O_RDWR); | |
2576 | } | |
2577 | #endif | |
2578 | } | |
2579 | } | |
2580 | else | |
2581 | desc = creat (fn, 0666); | |
2582 | } | |
2583 | #else /* not VMS */ | |
2584 | desc = creat (fn, auto_saving ? auto_save_mode_bits : 0666); | |
2585 | #endif /* not VMS */ | |
2586 | ||
09121adc RS |
2587 | UNGCPRO; |
2588 | ||
570d7624 JB |
2589 | if (desc < 0) |
2590 | { | |
2591 | #ifdef CLASH_DETECTION | |
2592 | save_errno = errno; | |
3b7792ed | 2593 | if (!auto_saving) unlock_file (visit_file); |
570d7624 JB |
2594 | errno = save_errno; |
2595 | #endif /* CLASH_DETECTION */ | |
2596 | report_file_error ("Opening output file", Fcons (filename, Qnil)); | |
2597 | } | |
2598 | ||
2599 | record_unwind_protect (close_file_unwind, make_number (desc)); | |
2600 | ||
265a9e55 | 2601 | if (!NILP (append)) |
570d7624 JB |
2602 | if (lseek (desc, 0, 2) < 0) |
2603 | { | |
2604 | #ifdef CLASH_DETECTION | |
3b7792ed | 2605 | if (!auto_saving) unlock_file (visit_file); |
570d7624 JB |
2606 | #endif /* CLASH_DETECTION */ |
2607 | report_file_error ("Lseek error", Fcons (filename, Qnil)); | |
2608 | } | |
2609 | ||
2610 | #ifdef VMS | |
2611 | /* | |
2612 | * Kludge Warning: The VMS C RTL likes to insert carriage returns | |
2613 | * if we do writes that don't end with a carriage return. Furthermore | |
2614 | * it cannot handle writes of more then 16K. The modified | |
2615 | * version of "sys_write" in SYSDEP.C (see comment there) copes with | |
2616 | * this EXCEPT for the last record (iff it doesn't end with a carriage | |
2617 | * return). This implies that if your buffer doesn't end with a carriage | |
2618 | * return, you get one free... tough. However it also means that if | |
2619 | * we make two calls to sys_write (a la the following code) you can | |
2620 | * get one at the gap as well. The easiest way to fix this (honest) | |
2621 | * is to move the gap to the next newline (or the end of the buffer). | |
2622 | * Thus this change. | |
2623 | * | |
2624 | * Yech! | |
2625 | */ | |
2626 | if (GPT > BEG && GPT_ADDR[-1] != '\n') | |
2627 | move_gap (find_next_newline (GPT, 1)); | |
2628 | #endif | |
2629 | ||
2630 | failure = 0; | |
2631 | immediate_quit = 1; | |
2632 | ||
2633 | if (XTYPE (start) == Lisp_String) | |
2634 | { | |
2635 | failure = 0 > e_write (desc, XSTRING (start)->data, | |
2636 | XSTRING (start)->size); | |
2637 | save_errno = errno; | |
2638 | } | |
2639 | else if (XINT (start) != XINT (end)) | |
2640 | { | |
2641 | if (XINT (start) < GPT) | |
2642 | { | |
2643 | register int end1 = XINT (end); | |
2644 | tem = XINT (start); | |
2645 | failure = 0 > e_write (desc, &FETCH_CHAR (tem), | |
2646 | min (GPT, end1) - tem); | |
2647 | save_errno = errno; | |
2648 | } | |
2649 | ||
2650 | if (XINT (end) > GPT && !failure) | |
2651 | { | |
2652 | tem = XINT (start); | |
2653 | tem = max (tem, GPT); | |
2654 | failure = 0 > e_write (desc, &FETCH_CHAR (tem), XINT (end) - tem); | |
2655 | save_errno = errno; | |
2656 | } | |
2657 | } | |
2658 | ||
2659 | immediate_quit = 0; | |
2660 | ||
2661 | #ifndef USG | |
2662 | #ifndef VMS | |
2663 | #ifndef BSD4_1 | |
570d7624 JB |
2664 | /* Note fsync appears to change the modtime on BSD4.2 (both vax and sun). |
2665 | Disk full in NFS may be reported here. */ | |
2666 | if (fsync (desc) < 0) | |
2667 | failure = 1, save_errno = errno; | |
2668 | #endif | |
2669 | #endif | |
570d7624 JB |
2670 | #endif |
2671 | ||
2672 | /* Spurious "file has changed on disk" warnings have been | |
2673 | observed on Suns as well. | |
2674 | It seems that `close' can change the modtime, under nfs. | |
2675 | ||
2676 | (This has supposedly been fixed in Sunos 4, | |
2677 | but who knows about all the other machines with NFS?) */ | |
2678 | #if 0 | |
2679 | ||
2680 | /* On VMS and APOLLO, must do the stat after the close | |
2681 | since closing changes the modtime. */ | |
2682 | #ifndef VMS | |
2683 | #ifndef APOLLO | |
2684 | /* Recall that #if defined does not work on VMS. */ | |
2685 | #define FOO | |
2686 | fstat (desc, &st); | |
2687 | #endif | |
2688 | #endif | |
2689 | #endif | |
2690 | ||
2691 | /* NFS can report a write failure now. */ | |
2692 | if (close (desc) < 0) | |
2693 | failure = 1, save_errno = errno; | |
2694 | ||
2695 | #ifdef VMS | |
2696 | /* If we wrote to a temporary name and had no errors, rename to real name. */ | |
2697 | if (fname) | |
2698 | { | |
2699 | if (!failure) | |
2700 | failure = (rename (fn, fname) != 0), save_errno = errno; | |
2701 | fn = fname; | |
2702 | } | |
2703 | #endif /* VMS */ | |
2704 | ||
2705 | #ifndef FOO | |
2706 | stat (fn, &st); | |
2707 | #endif | |
2708 | /* Discard the unwind protect */ | |
2709 | specpdl_ptr = specpdl + count; | |
2710 | ||
2711 | #ifdef CLASH_DETECTION | |
2712 | if (!auto_saving) | |
3b7792ed | 2713 | unlock_file (visit_file); |
570d7624 JB |
2714 | #endif /* CLASH_DETECTION */ |
2715 | ||
2716 | /* Do this before reporting IO error | |
2717 | to avoid a "file has changed on disk" warning on | |
2718 | next attempt to save. */ | |
3b7792ed | 2719 | if (EQ (visit, Qt) || XTYPE (visit) == Lisp_String) |
570d7624 JB |
2720 | current_buffer->modtime = st.st_mtime; |
2721 | ||
2722 | if (failure) | |
2723 | error ("IO error writing %s: %s", fn, err_str (save_errno)); | |
2724 | ||
3b7792ed | 2725 | if (EQ (visit, Qt) || XTYPE (visit) == Lisp_String) |
570d7624 JB |
2726 | { |
2727 | current_buffer->save_modified = MODIFF; | |
2728 | XFASTINT (current_buffer->save_length) = Z - BEG; | |
3b7792ed | 2729 | current_buffer->filename = visit_file; |
570d7624 | 2730 | } |
265a9e55 | 2731 | else if (!NILP (visit)) |
570d7624 JB |
2732 | return Qnil; |
2733 | ||
2734 | if (!auto_saving) | |
3b7792ed | 2735 | message ("Wrote %s", XSTRING (visit_file)->data); |
570d7624 JB |
2736 | |
2737 | return Qnil; | |
2738 | } | |
2739 | ||
2740 | int | |
2741 | e_write (desc, addr, len) | |
2742 | int desc; | |
2743 | register char *addr; | |
2744 | register int len; | |
2745 | { | |
2746 | char buf[16 * 1024]; | |
2747 | register char *p, *end; | |
2748 | ||
2749 | if (!EQ (current_buffer->selective_display, Qt)) | |
2750 | return write (desc, addr, len) - len; | |
2751 | else | |
2752 | { | |
2753 | p = buf; | |
2754 | end = p + sizeof buf; | |
2755 | while (len--) | |
2756 | { | |
2757 | if (p == end) | |
2758 | { | |
2759 | if (write (desc, buf, sizeof buf) != sizeof buf) | |
2760 | return -1; | |
2761 | p = buf; | |
2762 | } | |
2763 | *p = *addr++; | |
2764 | if (*p++ == '\015') | |
2765 | p[-1] = '\n'; | |
2766 | } | |
2767 | if (p != buf) | |
2768 | if (write (desc, buf, p - buf) != p - buf) | |
2769 | return -1; | |
2770 | } | |
2771 | return 0; | |
2772 | } | |
2773 | ||
2774 | DEFUN ("verify-visited-file-modtime", Fverify_visited_file_modtime, | |
2775 | Sverify_visited_file_modtime, 1, 1, 0, | |
2776 | "Return t if last mod time of BUF's visited file matches what BUF records.\n\ | |
2777 | This means that the file has not been changed since it was visited or saved.") | |
2778 | (buf) | |
2779 | Lisp_Object buf; | |
2780 | { | |
2781 | struct buffer *b; | |
2782 | struct stat st; | |
32f4334d | 2783 | Lisp_Object handler; |
570d7624 JB |
2784 | |
2785 | CHECK_BUFFER (buf, 0); | |
2786 | b = XBUFFER (buf); | |
2787 | ||
2788 | if (XTYPE (b->filename) != Lisp_String) return Qt; | |
2789 | if (b->modtime == 0) return Qt; | |
2790 | ||
32f4334d RS |
2791 | /* If the file name has special constructs in it, |
2792 | call the corresponding file handler. */ | |
642ef245 | 2793 | handler = Ffind_file_name_handler (b->filename); |
32f4334d | 2794 | if (!NILP (handler)) |
09121adc | 2795 | return call2 (handler, Qverify_visited_file_modtime, buf); |
32f4334d | 2796 | |
570d7624 JB |
2797 | if (stat (XSTRING (b->filename)->data, &st) < 0) |
2798 | { | |
2799 | /* If the file doesn't exist now and didn't exist before, | |
2800 | we say that it isn't modified, provided the error is a tame one. */ | |
2801 | if (errno == ENOENT || errno == EACCES || errno == ENOTDIR) | |
2802 | st.st_mtime = -1; | |
2803 | else | |
2804 | st.st_mtime = 0; | |
2805 | } | |
2806 | if (st.st_mtime == b->modtime | |
2807 | /* If both are positive, accept them if they are off by one second. */ | |
2808 | || (st.st_mtime > 0 && b->modtime > 0 | |
2809 | && (st.st_mtime == b->modtime + 1 | |
2810 | || st.st_mtime == b->modtime - 1))) | |
2811 | return Qt; | |
2812 | return Qnil; | |
2813 | } | |
2814 | ||
2815 | DEFUN ("clear-visited-file-modtime", Fclear_visited_file_modtime, | |
2816 | Sclear_visited_file_modtime, 0, 0, 0, | |
2817 | "Clear out records of last mod time of visited file.\n\ | |
2818 | Next attempt to save will certainly not complain of a discrepancy.") | |
2819 | () | |
2820 | { | |
2821 | current_buffer->modtime = 0; | |
2822 | return Qnil; | |
2823 | } | |
2824 | ||
f5d5eccf RS |
2825 | DEFUN ("visited-file-modtime", Fvisited_file_modtime, |
2826 | Svisited_file_modtime, 0, 0, 0, | |
2827 | "Return the current buffer's recorded visited file modification time.\n\ | |
2828 | The value is a list of the form (HIGH . LOW), like the time values\n\ | |
2829 | that `file-attributes' returns.") | |
2830 | () | |
2831 | { | |
2832 | return long_to_cons (current_buffer->modtime); | |
2833 | } | |
2834 | ||
570d7624 | 2835 | DEFUN ("set-visited-file-modtime", Fset_visited_file_modtime, |
f5d5eccf | 2836 | Sset_visited_file_modtime, 0, 1, 0, |
570d7624 JB |
2837 | "Update buffer's recorded modification time from the visited file's time.\n\ |
2838 | Useful if the buffer was not read from the file normally\n\ | |
f5d5eccf RS |
2839 | or if the file itself has been changed for some known benign reason.\n\ |
2840 | An argument specifies the modification time value to use\n\ | |
2841 | \(instead of that of the visited file), in the form of a list\n\ | |
2842 | \(HIGH . LOW) or (HIGH LOW).") | |
2843 | (time_list) | |
2844 | Lisp_Object time_list; | |
570d7624 | 2845 | { |
f5d5eccf RS |
2846 | if (!NILP (time_list)) |
2847 | current_buffer->modtime = cons_to_long (time_list); | |
2848 | else | |
2849 | { | |
2850 | register Lisp_Object filename; | |
2851 | struct stat st; | |
2852 | Lisp_Object handler; | |
570d7624 | 2853 | |
f5d5eccf | 2854 | filename = Fexpand_file_name (current_buffer->filename, Qnil); |
32f4334d | 2855 | |
f5d5eccf RS |
2856 | /* If the file name has special constructs in it, |
2857 | call the corresponding file handler. */ | |
2858 | handler = Ffind_file_name_handler (filename); | |
2859 | if (!NILP (handler)) | |
2860 | return call3 (handler, Qfile_name_directory, filename, Qnil); | |
2861 | else if (stat (XSTRING (filename)->data, &st) >= 0) | |
2862 | current_buffer->modtime = st.st_mtime; | |
2863 | } | |
570d7624 JB |
2864 | |
2865 | return Qnil; | |
2866 | } | |
2867 | \f | |
2868 | Lisp_Object | |
2869 | auto_save_error () | |
2870 | { | |
2871 | unsigned char *name = XSTRING (current_buffer->name)->data; | |
2872 | ||
2873 | ring_bell (); | |
2874 | message ("Autosaving...error for %s", name); | |
de49a6d3 | 2875 | Fsleep_for (make_number (1), Qnil); |
570d7624 | 2876 | message ("Autosaving...error!for %s", name); |
de49a6d3 | 2877 | Fsleep_for (make_number (1), Qnil); |
570d7624 | 2878 | message ("Autosaving...error for %s", name); |
de49a6d3 | 2879 | Fsleep_for (make_number (1), Qnil); |
570d7624 JB |
2880 | return Qnil; |
2881 | } | |
2882 | ||
2883 | Lisp_Object | |
2884 | auto_save_1 () | |
2885 | { | |
2886 | unsigned char *fn; | |
2887 | struct stat st; | |
2888 | ||
2889 | /* Get visited file's mode to become the auto save file's mode. */ | |
2890 | if (stat (XSTRING (current_buffer->filename)->data, &st) >= 0) | |
2891 | /* But make sure we can overwrite it later! */ | |
2892 | auto_save_mode_bits = st.st_mode | 0600; | |
2893 | else | |
2894 | auto_save_mode_bits = 0666; | |
2895 | ||
2896 | return | |
2897 | Fwrite_region (Qnil, Qnil, | |
2898 | current_buffer->auto_save_file_name, | |
2899 | Qnil, Qlambda); | |
2900 | } | |
2901 | ||
2902 | DEFUN ("do-auto-save", Fdo_auto_save, Sdo_auto_save, 0, 2, "", | |
2903 | "Auto-save all buffers that need it.\n\ | |
2904 | This is all buffers that have auto-saving enabled\n\ | |
2905 | and are changed since last auto-saved.\n\ | |
2906 | Auto-saving writes the buffer into a file\n\ | |
2907 | so that your editing is not lost if the system crashes.\n\ | |
2908 | This file is not the file you visited; that changes only when you save.\n\n\ | |
2909 | Non-nil first argument means do not print any message if successful.\n\ | |
4746118a | 2910 | Non-nil second argument means save only current buffer.") |
17857782 JB |
2911 | (no_message, current_only) |
2912 | Lisp_Object no_message, current_only; | |
570d7624 JB |
2913 | { |
2914 | struct buffer *old = current_buffer, *b; | |
2915 | Lisp_Object tail, buf; | |
2916 | int auto_saved = 0; | |
2917 | char *omessage = echo_area_glyphs; | |
f14b1c68 JB |
2918 | extern int minibuf_level; |
2919 | int do_handled_files; | |
570d7624 JB |
2920 | |
2921 | /* No GCPRO needed, because (when it matters) all Lisp_Object variables | |
2922 | point to non-strings reached from Vbuffer_alist. */ | |
2923 | ||
2924 | auto_saving = 1; | |
2925 | if (minibuf_level) | |
17857782 | 2926 | no_message = Qt; |
570d7624 JB |
2927 | |
2928 | /* Vrun_hooks is nil before emacs is dumped, and inc-vers.el will | |
2929 | eventually call do-auto-save, so don't err here in that case. */ | |
265a9e55 | 2930 | if (!NILP (Vrun_hooks)) |
570d7624 JB |
2931 | call1 (Vrun_hooks, intern ("auto-save-hook")); |
2932 | ||
f14b1c68 JB |
2933 | /* First, save all files which don't have handlers. If Emacs is |
2934 | crashing, the handlers may tweak what is causing Emacs to crash | |
2935 | in the first place, and it would be a shame if Emacs failed to | |
2936 | autosave perfectly ordinary files because it couldn't handle some | |
2937 | ange-ftp'd file. */ | |
2938 | for (do_handled_files = 0; do_handled_files < 2; do_handled_files++) | |
2939 | for (tail = Vbuffer_alist; XGCTYPE (tail) == Lisp_Cons; | |
2940 | tail = XCONS (tail)->cdr) | |
2941 | { | |
2942 | buf = XCONS (XCONS (tail)->car)->cdr; | |
2943 | b = XBUFFER (buf); | |
17857782 | 2944 | |
f14b1c68 JB |
2945 | if (!NILP (current_only) |
2946 | && b != current_buffer) | |
2947 | continue; | |
17857782 | 2948 | |
f14b1c68 JB |
2949 | /* Check for auto save enabled |
2950 | and file changed since last auto save | |
2951 | and file changed since last real save. */ | |
2952 | if (XTYPE (b->auto_save_file_name) == Lisp_String | |
2953 | && b->save_modified < BUF_MODIFF (b) | |
2954 | && b->auto_save_modified < BUF_MODIFF (b) | |
2955 | && (do_handled_files | |
2956 | || NILP (Ffind_file_name_handler (b->auto_save_file_name)))) | |
2957 | { | |
2958 | if ((XFASTINT (b->save_length) * 10 | |
2959 | > (BUF_Z (b) - BUF_BEG (b)) * 13) | |
2960 | /* A short file is likely to change a large fraction; | |
2961 | spare the user annoying messages. */ | |
2962 | && XFASTINT (b->save_length) > 5000 | |
2963 | /* These messages are frequent and annoying for `*mail*'. */ | |
2964 | && !EQ (b->filename, Qnil) | |
2965 | && NILP (no_message)) | |
2966 | { | |
2967 | /* It has shrunk too much; turn off auto-saving here. */ | |
2968 | message ("Buffer %s has shrunk a lot; auto save turned off there", | |
2969 | XSTRING (b->name)->data); | |
2970 | /* User can reenable saving with M-x auto-save. */ | |
2971 | b->auto_save_file_name = Qnil; | |
2972 | /* Prevent warning from repeating if user does so. */ | |
2973 | XFASTINT (b->save_length) = 0; | |
2974 | Fsleep_for (make_number (1), Qnil); | |
2975 | continue; | |
2976 | } | |
2977 | set_buffer_internal (b); | |
2978 | if (!auto_saved && NILP (no_message)) | |
2979 | message1 ("Auto-saving..."); | |
2980 | internal_condition_case (auto_save_1, Qt, auto_save_error); | |
2981 | auto_saved++; | |
2982 | b->auto_save_modified = BUF_MODIFF (b); | |
2983 | XFASTINT (current_buffer->save_length) = Z - BEG; | |
2984 | set_buffer_internal (old); | |
2985 | } | |
2986 | } | |
570d7624 | 2987 | |
b67f2ca5 RS |
2988 | /* Prevent another auto save till enough input events come in. */ |
2989 | record_auto_save (); | |
570d7624 | 2990 | |
17857782 | 2991 | if (auto_saved && NILP (no_message)) |
570d7624 JB |
2992 | message1 (omessage ? omessage : "Auto-saving...done"); |
2993 | ||
2994 | auto_saving = 0; | |
2995 | return Qnil; | |
2996 | } | |
2997 | ||
2998 | DEFUN ("set-buffer-auto-saved", Fset_buffer_auto_saved, | |
2999 | Sset_buffer_auto_saved, 0, 0, 0, | |
3000 | "Mark current buffer as auto-saved with its current text.\n\ | |
3001 | No auto-save file will be written until the buffer changes again.") | |
3002 | () | |
3003 | { | |
3004 | current_buffer->auto_save_modified = MODIFF; | |
3005 | XFASTINT (current_buffer->save_length) = Z - BEG; | |
3006 | return Qnil; | |
3007 | } | |
3008 | ||
3009 | DEFUN ("recent-auto-save-p", Frecent_auto_save_p, Srecent_auto_save_p, | |
3010 | 0, 0, 0, | |
3011 | "Return t if buffer has been auto-saved since last read in or saved.") | |
3012 | () | |
3013 | { | |
3014 | return (current_buffer->save_modified < current_buffer->auto_save_modified) ? Qt : Qnil; | |
3015 | } | |
3016 | \f | |
3017 | /* Reading and completing file names */ | |
3018 | extern Lisp_Object Ffile_name_completion (), Ffile_name_all_completions (); | |
3019 | ||
3020 | DEFUN ("read-file-name-internal", Fread_file_name_internal, Sread_file_name_internal, | |
3021 | 3, 3, 0, | |
3022 | "Internal subroutine for read-file-name. Do not call this.") | |
3023 | (string, dir, action) | |
3024 | Lisp_Object string, dir, action; | |
3025 | /* action is nil for complete, t for return list of completions, | |
3026 | lambda for verify final value */ | |
3027 | { | |
3028 | Lisp_Object name, specdir, realdir, val, orig_string; | |
09121adc RS |
3029 | int changed; |
3030 | struct gcpro gcpro1, gcpro2, gcpro3, gcpro4; | |
3031 | ||
3032 | realdir = dir; | |
3033 | name = string; | |
3034 | orig_string = Qnil; | |
3035 | specdir = Qnil; | |
3036 | changed = 0; | |
3037 | /* No need to protect ACTION--we only compare it with t and nil. */ | |
3038 | GCPRO4 (string, realdir, name, specdir); | |
570d7624 JB |
3039 | |
3040 | if (XSTRING (string)->size == 0) | |
3041 | { | |
570d7624 | 3042 | if (EQ (action, Qlambda)) |
09121adc RS |
3043 | { |
3044 | UNGCPRO; | |
3045 | return Qnil; | |
3046 | } | |
570d7624 JB |
3047 | } |
3048 | else | |
3049 | { | |
3050 | orig_string = string; | |
3051 | string = Fsubstitute_in_file_name (string); | |
09121adc | 3052 | changed = NILP (Fstring_equal (string, orig_string)); |
570d7624 | 3053 | name = Ffile_name_nondirectory (string); |
09121adc RS |
3054 | val = Ffile_name_directory (string); |
3055 | if (! NILP (val)) | |
3056 | realdir = Fexpand_file_name (val, realdir); | |
570d7624 JB |
3057 | } |
3058 | ||
265a9e55 | 3059 | if (NILP (action)) |
570d7624 JB |
3060 | { |
3061 | specdir = Ffile_name_directory (string); | |
3062 | val = Ffile_name_completion (name, realdir); | |
09121adc | 3063 | UNGCPRO; |
570d7624 JB |
3064 | if (XTYPE (val) != Lisp_String) |
3065 | { | |
09121adc | 3066 | if (changed) |
570d7624 | 3067 | return string; |
09121adc | 3068 | return val; |
570d7624 JB |
3069 | } |
3070 | ||
265a9e55 | 3071 | if (!NILP (specdir)) |
570d7624 JB |
3072 | val = concat2 (specdir, val); |
3073 | #ifndef VMS | |
3074 | { | |
3075 | register unsigned char *old, *new; | |
3076 | register int n; | |
3077 | int osize, count; | |
3078 | ||
3079 | osize = XSTRING (val)->size; | |
3080 | /* Quote "$" as "$$" to get it past substitute-in-file-name */ | |
3081 | for (n = osize, count = 0, old = XSTRING (val)->data; n > 0; n--) | |
3082 | if (*old++ == '$') count++; | |
3083 | if (count > 0) | |
3084 | { | |
3085 | old = XSTRING (val)->data; | |
3086 | val = Fmake_string (make_number (osize + count), make_number (0)); | |
3087 | new = XSTRING (val)->data; | |
3088 | for (n = osize; n > 0; n--) | |
3089 | if (*old != '$') | |
3090 | *new++ = *old++; | |
3091 | else | |
3092 | { | |
3093 | *new++ = '$'; | |
3094 | *new++ = '$'; | |
3095 | old++; | |
3096 | } | |
3097 | } | |
3098 | } | |
3099 | #endif /* Not VMS */ | |
09121adc | 3100 | return val; |
570d7624 | 3101 | } |
09121adc | 3102 | UNGCPRO; |
570d7624 JB |
3103 | |
3104 | if (EQ (action, Qt)) | |
3105 | return Ffile_name_all_completions (name, realdir); | |
3106 | /* Only other case actually used is ACTION = lambda */ | |
3107 | #ifdef VMS | |
3108 | /* Supposedly this helps commands such as `cd' that read directory names, | |
3109 | but can someone explain how it helps them? -- RMS */ | |
3110 | if (XSTRING (name)->size == 0) | |
3111 | return Qt; | |
3112 | #endif /* VMS */ | |
3113 | return Ffile_exists_p (string); | |
3114 | } | |
3115 | ||
3116 | DEFUN ("read-file-name", Fread_file_name, Sread_file_name, 1, 5, 0, | |
3117 | "Read file name, prompting with PROMPT and completing in directory DIR.\n\ | |
3118 | Value is not expanded---you must call `expand-file-name' yourself.\n\ | |
3119 | Default name to DEFAULT if user enters a null string.\n\ | |
3120 | (If DEFAULT is omitted, the visited file name is used.)\n\ | |
3121 | Fourth arg MUSTMATCH non-nil means require existing file's name.\n\ | |
3122 | Non-nil and non-t means also require confirmation after completion.\n\ | |
3123 | Fifth arg INITIAL specifies text to start with.\n\ | |
3124 | DIR defaults to current buffer's directory default.") | |
3125 | (prompt, dir, defalt, mustmatch, initial) | |
3126 | Lisp_Object prompt, dir, defalt, mustmatch, initial; | |
3127 | { | |
85b5fe07 | 3128 | Lisp_Object val, insdef, insdef1, tem; |
570d7624 JB |
3129 | struct gcpro gcpro1, gcpro2; |
3130 | register char *homedir; | |
3131 | int count; | |
3132 | ||
265a9e55 | 3133 | if (NILP (dir)) |
570d7624 | 3134 | dir = current_buffer->directory; |
265a9e55 | 3135 | if (NILP (defalt)) |
570d7624 JB |
3136 | defalt = current_buffer->filename; |
3137 | ||
3138 | /* If dir starts with user's homedir, change that to ~. */ | |
3139 | homedir = (char *) egetenv ("HOME"); | |
3140 | if (homedir != 0 | |
3141 | && XTYPE (dir) == Lisp_String | |
3142 | && !strncmp (homedir, XSTRING (dir)->data, strlen (homedir)) | |
3143 | && XSTRING (dir)->data[strlen (homedir)] == '/') | |
3144 | { | |
3145 | dir = make_string (XSTRING (dir)->data + strlen (homedir) - 1, | |
3146 | XSTRING (dir)->size - strlen (homedir) + 1); | |
3147 | XSTRING (dir)->data[0] = '~'; | |
3148 | } | |
3149 | ||
3150 | if (insert_default_directory) | |
3151 | { | |
3152 | insdef = dir; | |
85b5fe07 | 3153 | insdef1 = dir; |
265a9e55 | 3154 | if (!NILP (initial)) |
570d7624 | 3155 | { |
15c65264 | 3156 | Lisp_Object args[2], pos; |
570d7624 JB |
3157 | |
3158 | args[0] = insdef; | |
3159 | args[1] = initial; | |
3160 | insdef = Fconcat (2, args); | |
509b05ed | 3161 | pos = make_number (XSTRING (dir)->size); |
85b5fe07 | 3162 | insdef1 = Fcons (insdef, pos); |
570d7624 | 3163 | } |
570d7624 JB |
3164 | } |
3165 | else | |
85b5fe07 | 3166 | insdef = Qnil, insdef1 = Qnil; |
570d7624 JB |
3167 | |
3168 | #ifdef VMS | |
3169 | count = specpdl_ptr - specpdl; | |
3170 | specbind (intern ("completion-ignore-case"), Qt); | |
3171 | #endif | |
3172 | ||
3173 | GCPRO2 (insdef, defalt); | |
3174 | val = Fcompleting_read (prompt, intern ("read-file-name-internal"), | |
85b5fe07 | 3175 | dir, mustmatch, insdef1, |
15c65264 | 3176 | Qfile_name_history); |
570d7624 JB |
3177 | |
3178 | #ifdef VMS | |
3179 | unbind_to (count, Qnil); | |
3180 | #endif | |
3181 | ||
3182 | UNGCPRO; | |
265a9e55 | 3183 | if (NILP (val)) |
570d7624 JB |
3184 | error ("No file name specified"); |
3185 | tem = Fstring_equal (val, insdef); | |
265a9e55 | 3186 | if (!NILP (tem) && !NILP (defalt)) |
570d7624 JB |
3187 | return defalt; |
3188 | return Fsubstitute_in_file_name (val); | |
3189 | } | |
3190 | ||
3191 | #if 0 /* Old version */ | |
3192 | DEFUN ("read-file-name", Fread_file_name, Sread_file_name, 1, 5, 0, | |
3193 | "Read file name, prompting with PROMPT and completing in directory DIR.\n\ | |
3194 | Value is not expanded---you must call `expand-file-name' yourself.\n\ | |
3195 | Default name to DEFAULT if user enters a null string.\n\ | |
3196 | (If DEFAULT is omitted, the visited file name is used.)\n\ | |
3197 | Fourth arg MUSTMATCH non-nil means require existing file's name.\n\ | |
3198 | Non-nil and non-t means also require confirmation after completion.\n\ | |
3199 | Fifth arg INITIAL specifies text to start with.\n\ | |
3200 | DIR defaults to current buffer's directory default.") | |
3201 | (prompt, dir, defalt, mustmatch, initial) | |
3202 | Lisp_Object prompt, dir, defalt, mustmatch, initial; | |
3203 | { | |
3204 | Lisp_Object val, insdef, tem; | |
3205 | struct gcpro gcpro1, gcpro2; | |
3206 | register char *homedir; | |
3207 | int count; | |
3208 | ||
265a9e55 | 3209 | if (NILP (dir)) |
570d7624 | 3210 | dir = current_buffer->directory; |
265a9e55 | 3211 | if (NILP (defalt)) |
570d7624 JB |
3212 | defalt = current_buffer->filename; |
3213 | ||
3214 | /* If dir starts with user's homedir, change that to ~. */ | |
3215 | homedir = (char *) egetenv ("HOME"); | |
3216 | if (homedir != 0 | |
3217 | && XTYPE (dir) == Lisp_String | |
3218 | && !strncmp (homedir, XSTRING (dir)->data, strlen (homedir)) | |
3219 | && XSTRING (dir)->data[strlen (homedir)] == '/') | |
3220 | { | |
3221 | dir = make_string (XSTRING (dir)->data + strlen (homedir) - 1, | |
3222 | XSTRING (dir)->size - strlen (homedir) + 1); | |
3223 | XSTRING (dir)->data[0] = '~'; | |
3224 | } | |
3225 | ||
265a9e55 | 3226 | if (!NILP (initial)) |
570d7624 JB |
3227 | insdef = initial; |
3228 | else if (insert_default_directory) | |
3229 | insdef = dir; | |
3230 | else | |
3231 | insdef = build_string (""); | |
3232 | ||
3233 | #ifdef VMS | |
3234 | count = specpdl_ptr - specpdl; | |
3235 | specbind (intern ("completion-ignore-case"), Qt); | |
3236 | #endif | |
3237 | ||
3238 | GCPRO2 (insdef, defalt); | |
3239 | val = Fcompleting_read (prompt, intern ("read-file-name-internal"), | |
3240 | dir, mustmatch, | |
15c65264 RS |
3241 | insert_default_directory ? insdef : Qnil, |
3242 | Qfile_name_history); | |
570d7624 JB |
3243 | |
3244 | #ifdef VMS | |
3245 | unbind_to (count, Qnil); | |
3246 | #endif | |
3247 | ||
3248 | UNGCPRO; | |
265a9e55 | 3249 | if (NILP (val)) |
570d7624 JB |
3250 | error ("No file name specified"); |
3251 | tem = Fstring_equal (val, insdef); | |
265a9e55 | 3252 | if (!NILP (tem) && !NILP (defalt)) |
570d7624 JB |
3253 | return defalt; |
3254 | return Fsubstitute_in_file_name (val); | |
3255 | } | |
3256 | #endif /* Old version */ | |
3257 | \f | |
3258 | syms_of_fileio () | |
3259 | { | |
0bf2eed2 RS |
3260 | Qexpand_file_name = intern ("expand-file-name"); |
3261 | Qdirectory_file_name = intern ("directory-file-name"); | |
3262 | Qfile_name_directory = intern ("file-name-directory"); | |
3263 | Qfile_name_nondirectory = intern ("file-name-nondirectory"); | |
642ef245 | 3264 | Qunhandled_file_name_directory = intern ("unhandled-file-name-directory"); |
0bf2eed2 | 3265 | Qfile_name_as_directory = intern ("file-name-as-directory"); |
32f4334d RS |
3266 | Qcopy_file = intern ("copy-file"); |
3267 | Qmake_directory = intern ("make-directory"); | |
3268 | Qdelete_directory = intern ("delete-directory"); | |
3269 | Qdelete_file = intern ("delete-file"); | |
3270 | Qrename_file = intern ("rename-file"); | |
3271 | Qadd_name_to_file = intern ("add-name-to-file"); | |
3272 | Qmake_symbolic_link = intern ("make-symbolic-link"); | |
3273 | Qfile_exists_p = intern ("file-exists-p"); | |
3274 | Qfile_executable_p = intern ("file-executable-p"); | |
3275 | Qfile_readable_p = intern ("file-readable-p"); | |
3276 | Qfile_symlink_p = intern ("file-symlink-p"); | |
3277 | Qfile_writable_p = intern ("file-writable-p"); | |
3278 | Qfile_directory_p = intern ("file-directory-p"); | |
3279 | Qfile_accessible_directory_p = intern ("file-accessible-directory-p"); | |
3280 | Qfile_modes = intern ("file-modes"); | |
3281 | Qset_file_modes = intern ("set-file-modes"); | |
3282 | Qfile_newer_than_file_p = intern ("file-newer-than-file-p"); | |
3283 | Qinsert_file_contents = intern ("insert-file-contents"); | |
3284 | Qwrite_region = intern ("write-region"); | |
3285 | Qverify_visited_file_modtime = intern ("verify-visited-file-modtime"); | |
3286 | ||
642ef245 JB |
3287 | staticpro (&Qexpand_file_name); |
3288 | staticpro (&Qdirectory_file_name); | |
3289 | staticpro (&Qfile_name_directory); | |
3290 | staticpro (&Qfile_name_nondirectory); | |
3291 | staticpro (&Qunhandled_file_name_directory); | |
3292 | staticpro (&Qfile_name_as_directory); | |
15c65264 RS |
3293 | staticpro (&Qcopy_file); |
3294 | staticpro (&Qmake_directory); | |
3295 | staticpro (&Qdelete_directory); | |
3296 | staticpro (&Qdelete_file); | |
3297 | staticpro (&Qrename_file); | |
3298 | staticpro (&Qadd_name_to_file); | |
3299 | staticpro (&Qmake_symbolic_link); | |
3300 | staticpro (&Qfile_exists_p); | |
3301 | staticpro (&Qfile_executable_p); | |
3302 | staticpro (&Qfile_readable_p); | |
3303 | staticpro (&Qfile_symlink_p); | |
3304 | staticpro (&Qfile_writable_p); | |
3305 | staticpro (&Qfile_directory_p); | |
3306 | staticpro (&Qfile_accessible_directory_p); | |
3307 | staticpro (&Qfile_modes); | |
3308 | staticpro (&Qset_file_modes); | |
3309 | staticpro (&Qfile_newer_than_file_p); | |
3310 | staticpro (&Qinsert_file_contents); | |
3311 | staticpro (&Qwrite_region); | |
3312 | staticpro (&Qverify_visited_file_modtime); | |
642ef245 JB |
3313 | |
3314 | Qfile_name_history = intern ("file-name-history"); | |
3315 | Fset (Qfile_name_history, Qnil); | |
15c65264 RS |
3316 | staticpro (&Qfile_name_history); |
3317 | ||
570d7624 JB |
3318 | Qfile_error = intern ("file-error"); |
3319 | staticpro (&Qfile_error); | |
3320 | Qfile_already_exists = intern("file-already-exists"); | |
3321 | staticpro (&Qfile_already_exists); | |
3322 | ||
3323 | Fput (Qfile_error, Qerror_conditions, | |
3324 | Fcons (Qfile_error, Fcons (Qerror, Qnil))); | |
3325 | Fput (Qfile_error, Qerror_message, | |
3326 | build_string ("File error")); | |
3327 | ||
3328 | Fput (Qfile_already_exists, Qerror_conditions, | |
3329 | Fcons (Qfile_already_exists, | |
3330 | Fcons (Qfile_error, Fcons (Qerror, Qnil)))); | |
3331 | Fput (Qfile_already_exists, Qerror_message, | |
3332 | build_string ("File already exists")); | |
3333 | ||
3334 | DEFVAR_BOOL ("insert-default-directory", &insert_default_directory, | |
3335 | "*Non-nil means when reading a filename start with default dir in minibuffer."); | |
3336 | insert_default_directory = 1; | |
3337 | ||
3338 | DEFVAR_BOOL ("vms-stmlf-recfm", &vms_stmlf_recfm, | |
3339 | "*Non-nil means write new files with record format `stmlf'.\n\ | |
3340 | nil means use format `var'. This variable is meaningful only on VMS."); | |
3341 | vms_stmlf_recfm = 0; | |
3342 | ||
1d1826db RS |
3343 | DEFVAR_LISP ("file-name-handler-alist", &Vfile_name_handler_alist, |
3344 | "*Alist of elements (REGEXP . HANDLER) for file names handled specially.\n\ | |
3345 | If a file name matches REGEXP, then all I/O on that file is done by calling\n\ | |
3346 | HANDLER.\n\ | |
3347 | \n\ | |
3348 | The first argument given to HANDLER is the name of the I/O primitive\n\ | |
3349 | to be handled; the remaining arguments are the arguments that were\n\ | |
3350 | passed to that primitive. For example, if you do\n\ | |
3351 | (file-exists-p FILENAME)\n\ | |
3352 | and FILENAME is handled by HANDLER, then HANDLER is called like this:\n\ | |
642ef245 JB |
3353 | (funcall HANDLER 'file-exists-p FILENAME)\n\ |
3354 | The function `find-file-name-handler' checks this list for a handler\n\ | |
3355 | for its argument."); | |
09121adc RS |
3356 | Vfile_name_handler_alist = Qnil; |
3357 | ||
642ef245 | 3358 | defsubr (&Sfind_file_name_handler); |
570d7624 JB |
3359 | defsubr (&Sfile_name_directory); |
3360 | defsubr (&Sfile_name_nondirectory); | |
642ef245 | 3361 | defsubr (&Sunhandled_file_name_directory); |
570d7624 JB |
3362 | defsubr (&Sfile_name_as_directory); |
3363 | defsubr (&Sdirectory_file_name); | |
3364 | defsubr (&Smake_temp_name); | |
3365 | defsubr (&Sexpand_file_name); | |
3366 | defsubr (&Ssubstitute_in_file_name); | |
3367 | defsubr (&Scopy_file); | |
9bbe01fb | 3368 | defsubr (&Smake_directory_internal); |
aa734e17 | 3369 | defsubr (&Sdelete_directory); |
570d7624 JB |
3370 | defsubr (&Sdelete_file); |
3371 | defsubr (&Srename_file); | |
3372 | defsubr (&Sadd_name_to_file); | |
3373 | #ifdef S_IFLNK | |
3374 | defsubr (&Smake_symbolic_link); | |
3375 | #endif /* S_IFLNK */ | |
3376 | #ifdef VMS | |
3377 | defsubr (&Sdefine_logical_name); | |
3378 | #endif /* VMS */ | |
3379 | #ifdef HPUX_NET | |
3380 | defsubr (&Ssysnetunam); | |
3381 | #endif /* HPUX_NET */ | |
3382 | defsubr (&Sfile_name_absolute_p); | |
3383 | defsubr (&Sfile_exists_p); | |
3384 | defsubr (&Sfile_executable_p); | |
3385 | defsubr (&Sfile_readable_p); | |
3386 | defsubr (&Sfile_writable_p); | |
3387 | defsubr (&Sfile_symlink_p); | |
3388 | defsubr (&Sfile_directory_p); | |
b72dea2a | 3389 | defsubr (&Sfile_accessible_directory_p); |
570d7624 JB |
3390 | defsubr (&Sfile_modes); |
3391 | defsubr (&Sset_file_modes); | |
c24e9a53 RS |
3392 | defsubr (&Sset_default_file_modes); |
3393 | defsubr (&Sdefault_file_modes); | |
570d7624 JB |
3394 | defsubr (&Sfile_newer_than_file_p); |
3395 | defsubr (&Sinsert_file_contents); | |
3396 | defsubr (&Swrite_region); | |
3397 | defsubr (&Sverify_visited_file_modtime); | |
3398 | defsubr (&Sclear_visited_file_modtime); | |
f5d5eccf | 3399 | defsubr (&Svisited_file_modtime); |
570d7624 JB |
3400 | defsubr (&Sset_visited_file_modtime); |
3401 | defsubr (&Sdo_auto_save); | |
3402 | defsubr (&Sset_buffer_auto_saved); | |
3403 | defsubr (&Srecent_auto_save_p); | |
3404 | ||
3405 | defsubr (&Sread_file_name_internal); | |
3406 | defsubr (&Sread_file_name); | |
85ffea93 | 3407 | |
483a2e10 | 3408 | #ifdef unix |
85ffea93 | 3409 | defsubr (&Sunix_sync); |
483a2e10 | 3410 | #endif |
570d7624 | 3411 | } |