Commit | Line | Data |
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570d7624 | 1 | /* File IO for GNU Emacs. |
ce97267f | 2 | Copyright (C) 1985, 1986, 1987, 1988, 1993, 1994 Free Software Foundation, Inc. |
570d7624 JB |
3 | |
4 | This file is part of GNU Emacs. | |
5 | ||
6 | GNU Emacs is free software; you can redistribute it and/or modify | |
7 | it under the terms of the GNU General Public License as published by | |
4746118a | 8 | the Free Software Foundation; either version 2, or (at your option) |
570d7624 JB |
9 | any later version. |
10 | ||
11 | GNU Emacs is distributed in the hope that it will be useful, | |
12 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
13 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
14 | GNU General Public License for more details. | |
15 | ||
16 | You should have received a copy of the GNU General Public License | |
17 | along with GNU Emacs; see the file COPYING. If not, write to | |
18 | the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA. */ | |
19 | ||
18160b98 | 20 | #include <config.h> |
570d7624 JB |
21 | |
22 | #include <sys/types.h> | |
23 | #include <sys/stat.h> | |
bfb61299 | 24 | |
f73b0ada BF |
25 | #if !defined (S_ISLNK) && defined (S_IFLNK) |
26 | # define S_ISLNK(m) (((m) & S_IFMT) == S_IFLNK) | |
27 | #endif | |
28 | ||
29 | #if !defined (S_ISREG) && defined (S_IFREG) | |
30 | # define S_ISREG(m) (((m) & S_IFMT) == S_IFREG) | |
31 | #endif | |
32 | ||
bfb61299 | 33 | #ifdef VMS |
de5bf5d3 | 34 | #include "vms-pwd.h" |
bfb61299 | 35 | #else |
570d7624 | 36 | #include <pwd.h> |
bfb61299 JB |
37 | #endif |
38 | ||
4c3c22f3 RS |
39 | #ifdef MSDOS |
40 | #include "msdos.h" | |
41 | #include <sys/param.h> | |
42 | #endif | |
43 | ||
570d7624 | 44 | #include <ctype.h> |
bfb61299 JB |
45 | |
46 | #ifdef VMS | |
47 | #include "dir.h" | |
48 | #include <perror.h> | |
49 | #include <stddef.h> | |
50 | #include <string.h> | |
bfb61299 JB |
51 | #endif |
52 | ||
570d7624 JB |
53 | #include <errno.h> |
54 | ||
bfb61299 | 55 | #ifndef vax11c |
570d7624 | 56 | extern int errno; |
570d7624 JB |
57 | #endif |
58 | ||
ce97267f | 59 | extern char *strerror (); |
570d7624 JB |
60 | |
61 | #ifdef APOLLO | |
62 | #include <sys/time.h> | |
63 | #endif | |
64 | ||
6e23c83e JB |
65 | #ifndef USG |
66 | #ifndef VMS | |
67 | #ifndef BSD4_1 | |
68 | #define HAVE_FSYNC | |
69 | #endif | |
70 | #endif | |
71 | #endif | |
72 | ||
570d7624 | 73 | #include "lisp.h" |
8d4e077b | 74 | #include "intervals.h" |
570d7624 JB |
75 | #include "buffer.h" |
76 | #include "window.h" | |
77 | ||
78 | #ifdef VMS | |
570d7624 JB |
79 | #include <file.h> |
80 | #include <rmsdef.h> | |
81 | #include <fab.h> | |
82 | #include <nam.h> | |
83 | #endif | |
84 | ||
de5bf5d3 | 85 | #include "systime.h" |
570d7624 JB |
86 | |
87 | #ifdef HPUX | |
88 | #include <netio.h> | |
9b7828a5 | 89 | #ifndef HPUX8 |
47e7b9e5 | 90 | #ifndef HPUX9 |
570d7624 JB |
91 | #include <errnet.h> |
92 | #endif | |
9b7828a5 | 93 | #endif |
47e7b9e5 | 94 | #endif |
570d7624 JB |
95 | |
96 | #ifndef O_WRONLY | |
97 | #define O_WRONLY 1 | |
98 | #endif | |
99 | ||
100 | #define min(a, b) ((a) < (b) ? (a) : (b)) | |
101 | #define max(a, b) ((a) > (b) ? (a) : (b)) | |
102 | ||
103 | /* Nonzero during writing of auto-save files */ | |
104 | int auto_saving; | |
105 | ||
106 | /* Set by auto_save_1 to mode of original file so Fwrite_region will create | |
107 | a new file with the same mode as the original */ | |
108 | int auto_save_mode_bits; | |
109 | ||
32f4334d RS |
110 | /* Alist of elements (REGEXP . HANDLER) for file names |
111 | whose I/O is done with a special handler. */ | |
112 | Lisp_Object Vfile_name_handler_alist; | |
113 | ||
d6a3cc15 RS |
114 | /* Functions to be called to process text properties in inserted file. */ |
115 | Lisp_Object Vafter_insert_file_functions; | |
116 | ||
117 | /* Functions to be called to create text property annotations for file. */ | |
118 | Lisp_Object Vwrite_region_annotate_functions; | |
119 | ||
570d7624 JB |
120 | /* Nonzero means, when reading a filename in the minibuffer, |
121 | start out by inserting the default directory into the minibuffer. */ | |
122 | int insert_default_directory; | |
123 | ||
124 | /* On VMS, nonzero means write new files with record format stmlf. | |
125 | Zero means use var format. */ | |
126 | int vms_stmlf_recfm; | |
127 | ||
128 | Lisp_Object Qfile_error, Qfile_already_exists; | |
129 | ||
15c65264 RS |
130 | Lisp_Object Qfile_name_history; |
131 | ||
d6a3cc15 RS |
132 | Lisp_Object Qcar_less_than_car; |
133 | ||
570d7624 JB |
134 | report_file_error (string, data) |
135 | char *string; | |
136 | Lisp_Object data; | |
137 | { | |
138 | Lisp_Object errstring; | |
139 | ||
a1f17b2d | 140 | errstring = build_string (strerror (errno)); |
570d7624 JB |
141 | |
142 | /* System error messages are capitalized. Downcase the initial | |
143 | unless it is followed by a slash. */ | |
144 | if (XSTRING (errstring)->data[1] != '/') | |
145 | XSTRING (errstring)->data[0] = DOWNCASE (XSTRING (errstring)->data[0]); | |
146 | ||
147 | while (1) | |
148 | Fsignal (Qfile_error, | |
149 | Fcons (build_string (string), Fcons (errstring, data))); | |
150 | } | |
b5148e85 RS |
151 | |
152 | close_file_unwind (fd) | |
153 | Lisp_Object fd; | |
154 | { | |
155 | close (XFASTINT (fd)); | |
156 | } | |
570d7624 | 157 | \f |
0bf2eed2 RS |
158 | Lisp_Object Qexpand_file_name; |
159 | Lisp_Object Qdirectory_file_name; | |
160 | Lisp_Object Qfile_name_directory; | |
161 | Lisp_Object Qfile_name_nondirectory; | |
642ef245 | 162 | Lisp_Object Qunhandled_file_name_directory; |
0bf2eed2 | 163 | Lisp_Object Qfile_name_as_directory; |
32f4334d RS |
164 | Lisp_Object Qcopy_file; |
165 | Lisp_Object Qmake_directory; | |
166 | Lisp_Object Qdelete_directory; | |
167 | Lisp_Object Qdelete_file; | |
168 | Lisp_Object Qrename_file; | |
169 | Lisp_Object Qadd_name_to_file; | |
170 | Lisp_Object Qmake_symbolic_link; | |
171 | Lisp_Object Qfile_exists_p; | |
172 | Lisp_Object Qfile_executable_p; | |
173 | Lisp_Object Qfile_readable_p; | |
174 | Lisp_Object Qfile_symlink_p; | |
175 | Lisp_Object Qfile_writable_p; | |
176 | Lisp_Object Qfile_directory_p; | |
177 | Lisp_Object Qfile_accessible_directory_p; | |
178 | Lisp_Object Qfile_modes; | |
179 | Lisp_Object Qset_file_modes; | |
180 | Lisp_Object Qfile_newer_than_file_p; | |
181 | Lisp_Object Qinsert_file_contents; | |
182 | Lisp_Object Qwrite_region; | |
183 | Lisp_Object Qverify_visited_file_modtime; | |
3ec46acd | 184 | Lisp_Object Qset_visited_file_modtime; |
32f4334d | 185 | |
642ef245 JB |
186 | DEFUN ("find-file-name-handler", Ffind_file_name_handler, Sfind_file_name_handler, 1, 1, 0, |
187 | "Return FILENAME's handler function, if its syntax is handled specially.\n\ | |
188 | Otherwise, return nil.\n\ | |
189 | A file name is handled if one of the regular expressions in\n\ | |
190 | `file-name-handler-alist' matches it.") | |
191 | (filename) | |
192 | Lisp_Object filename; | |
32f4334d | 193 | { |
642ef245 | 194 | /* This function must not munge the match data. */ |
4554406a | 195 | Lisp_Object chain; |
642ef245 | 196 | |
e4432095 JB |
197 | CHECK_STRING (filename, 0); |
198 | ||
3eac9910 | 199 | for (chain = Vfile_name_handler_alist; XTYPE (chain) == Lisp_Cons; |
32f4334d RS |
200 | chain = XCONS (chain)->cdr) |
201 | { | |
202 | Lisp_Object elt; | |
203 | elt = XCONS (chain)->car; | |
204 | if (XTYPE (elt) == Lisp_Cons) | |
205 | { | |
206 | Lisp_Object string; | |
207 | string = XCONS (elt)->car; | |
208 | if (XTYPE (string) == Lisp_String | |
09121adc | 209 | && fast_string_match (string, filename) >= 0) |
32f4334d RS |
210 | return XCONS (elt)->cdr; |
211 | } | |
642ef245 JB |
212 | |
213 | QUIT; | |
32f4334d RS |
214 | } |
215 | return Qnil; | |
216 | } | |
217 | \f | |
570d7624 JB |
218 | DEFUN ("file-name-directory", Ffile_name_directory, Sfile_name_directory, |
219 | 1, 1, 0, | |
220 | "Return the directory component in file name NAME.\n\ | |
221 | Return nil if NAME does not include a directory.\n\ | |
222 | Otherwise return a directory spec.\n\ | |
223 | Given a Unix syntax file name, returns a string ending in slash;\n\ | |
224 | on VMS, perhaps instead a string ending in `:', `]' or `>'.") | |
225 | (file) | |
226 | Lisp_Object file; | |
227 | { | |
228 | register unsigned char *beg; | |
229 | register unsigned char *p; | |
0bf2eed2 | 230 | Lisp_Object handler; |
570d7624 JB |
231 | |
232 | CHECK_STRING (file, 0); | |
233 | ||
0bf2eed2 RS |
234 | /* If the file name has special constructs in it, |
235 | call the corresponding file handler. */ | |
642ef245 | 236 | handler = Ffind_file_name_handler (file); |
0bf2eed2 RS |
237 | if (!NILP (handler)) |
238 | return call2 (handler, Qfile_name_directory, file); | |
239 | ||
4c3c22f3 RS |
240 | #ifdef FILE_SYSTEM_CASE |
241 | file = FILE_SYSTEM_CASE (file); | |
242 | #endif | |
570d7624 JB |
243 | beg = XSTRING (file)->data; |
244 | p = beg + XSTRING (file)->size; | |
245 | ||
246 | while (p != beg && p[-1] != '/' | |
247 | #ifdef VMS | |
248 | && p[-1] != ':' && p[-1] != ']' && p[-1] != '>' | |
249 | #endif /* VMS */ | |
4c3c22f3 RS |
250 | #ifdef MSDOS |
251 | && p[-1] != ':' | |
252 | #endif | |
570d7624 JB |
253 | ) p--; |
254 | ||
255 | if (p == beg) | |
256 | return Qnil; | |
4c3c22f3 RS |
257 | #ifdef MSDOS |
258 | /* Expansion of "c:" to drive and default directory. */ | |
259 | if (p == beg + 2 && beg[1] == ':') | |
260 | { | |
261 | int drive = (*beg) - 'a'; | |
262 | /* MAXPATHLEN+1 is guaranteed to be enough space for getdefdir. */ | |
263 | unsigned char *res = alloca (MAXPATHLEN + 5); | |
264 | if (getdefdir (drive + 1, res + 2)) | |
265 | { | |
266 | res[0] = drive + 'a'; | |
267 | res[1] = ':'; | |
268 | if (res[strlen (res) - 1] != '/') | |
269 | strcat (res, "/"); | |
270 | beg = res; | |
271 | p = beg + strlen (beg); | |
272 | } | |
273 | } | |
274 | #endif | |
570d7624 JB |
275 | return make_string (beg, p - beg); |
276 | } | |
277 | ||
278 | DEFUN ("file-name-nondirectory", Ffile_name_nondirectory, Sfile_name_nondirectory, | |
279 | 1, 1, 0, | |
280 | "Return file name NAME sans its directory.\n\ | |
281 | For example, in a Unix-syntax file name,\n\ | |
282 | this is everything after the last slash,\n\ | |
283 | or the entire name if it contains no slash.") | |
284 | (file) | |
285 | Lisp_Object file; | |
286 | { | |
287 | register unsigned char *beg, *p, *end; | |
0bf2eed2 | 288 | Lisp_Object handler; |
570d7624 JB |
289 | |
290 | CHECK_STRING (file, 0); | |
291 | ||
0bf2eed2 RS |
292 | /* If the file name has special constructs in it, |
293 | call the corresponding file handler. */ | |
642ef245 | 294 | handler = Ffind_file_name_handler (file); |
0bf2eed2 RS |
295 | if (!NILP (handler)) |
296 | return call2 (handler, Qfile_name_nondirectory, file); | |
297 | ||
570d7624 JB |
298 | beg = XSTRING (file)->data; |
299 | end = p = beg + XSTRING (file)->size; | |
300 | ||
301 | while (p != beg && p[-1] != '/' | |
302 | #ifdef VMS | |
303 | && p[-1] != ':' && p[-1] != ']' && p[-1] != '>' | |
304 | #endif /* VMS */ | |
4c3c22f3 RS |
305 | #ifdef MSDOS |
306 | && p[-1] != ':' | |
307 | #endif | |
570d7624 JB |
308 | ) p--; |
309 | ||
310 | return make_string (p, end - p); | |
311 | } | |
642ef245 JB |
312 | |
313 | DEFUN ("unhandled-file-name-directory", Funhandled_file_name_directory, Sunhandled_file_name_directory, 1, 1, 0, | |
314 | "Return a directly usable directory name somehow associated with FILENAME.\n\ | |
315 | A `directly usable' directory name is one that may be used without the\n\ | |
316 | intervention of any file handler.\n\ | |
317 | If FILENAME is a directly usable file itself, return\n\ | |
318 | (file-name-directory FILENAME).\n\ | |
319 | The `call-process' and `start-process' functions use this function to\n\ | |
320 | get a current directory to run processes in.") | |
321 | (filename) | |
322 | Lisp_Object filename; | |
323 | { | |
324 | Lisp_Object handler; | |
325 | ||
326 | /* If the file name has special constructs in it, | |
327 | call the corresponding file handler. */ | |
328 | handler = Ffind_file_name_handler (filename); | |
329 | if (!NILP (handler)) | |
330 | return call2 (handler, Qunhandled_file_name_directory, filename); | |
331 | ||
332 | return Ffile_name_directory (filename); | |
333 | } | |
334 | ||
570d7624 JB |
335 | \f |
336 | char * | |
337 | file_name_as_directory (out, in) | |
338 | char *out, *in; | |
339 | { | |
340 | int size = strlen (in) - 1; | |
341 | ||
342 | strcpy (out, in); | |
343 | ||
344 | #ifdef VMS | |
345 | /* Is it already a directory string? */ | |
346 | if (in[size] == ':' || in[size] == ']' || in[size] == '>') | |
347 | return out; | |
348 | /* Is it a VMS directory file name? If so, hack VMS syntax. */ | |
349 | else if (! index (in, '/') | |
350 | && ((size > 3 && ! strcmp (&in[size - 3], ".DIR")) | |
351 | || (size > 3 && ! strcmp (&in[size - 3], ".dir")) | |
352 | || (size > 5 && (! strncmp (&in[size - 5], ".DIR", 4) | |
353 | || ! strncmp (&in[size - 5], ".dir", 4)) | |
354 | && (in[size - 1] == '.' || in[size - 1] == ';') | |
355 | && in[size] == '1'))) | |
356 | { | |
357 | register char *p, *dot; | |
358 | char brack; | |
359 | ||
360 | /* x.dir -> [.x] | |
361 | dir:x.dir --> dir:[x] | |
362 | dir:[x]y.dir --> dir:[x.y] */ | |
363 | p = in + size; | |
364 | while (p != in && *p != ':' && *p != '>' && *p != ']') p--; | |
365 | if (p != in) | |
366 | { | |
367 | strncpy (out, in, p - in); | |
368 | out[p - in] = '\0'; | |
369 | if (*p == ':') | |
370 | { | |
371 | brack = ']'; | |
372 | strcat (out, ":["); | |
373 | } | |
374 | else | |
375 | { | |
376 | brack = *p; | |
377 | strcat (out, "."); | |
378 | } | |
379 | p++; | |
380 | } | |
381 | else | |
382 | { | |
383 | brack = ']'; | |
384 | strcpy (out, "[."); | |
385 | } | |
bfb61299 JB |
386 | dot = index (p, '.'); |
387 | if (dot) | |
570d7624 JB |
388 | { |
389 | /* blindly remove any extension */ | |
390 | size = strlen (out) + (dot - p); | |
391 | strncat (out, p, dot - p); | |
392 | } | |
393 | else | |
394 | { | |
395 | strcat (out, p); | |
396 | size = strlen (out); | |
397 | } | |
398 | out[size++] = brack; | |
399 | out[size] = '\0'; | |
400 | } | |
401 | #else /* not VMS */ | |
402 | /* For Unix syntax, Append a slash if necessary */ | |
4c3c22f3 RS |
403 | #ifdef MSDOS |
404 | if (out[size] != ':' && out[size] != '/') | |
405 | #else | |
570d7624 | 406 | if (out[size] != '/') |
4c3c22f3 | 407 | #endif |
570d7624 JB |
408 | strcat (out, "/"); |
409 | #endif /* not VMS */ | |
410 | return out; | |
411 | } | |
412 | ||
413 | DEFUN ("file-name-as-directory", Ffile_name_as_directory, | |
414 | Sfile_name_as_directory, 1, 1, 0, | |
415 | "Return a string representing file FILENAME interpreted as a directory.\n\ | |
416 | This operation exists because a directory is also a file, but its name as\n\ | |
417 | a directory is different from its name as a file.\n\ | |
418 | The result can be used as the value of `default-directory'\n\ | |
419 | or passed as second argument to `expand-file-name'.\n\ | |
420 | For a Unix-syntax file name, just appends a slash.\n\ | |
421 | On VMS, converts \"[X]FOO.DIR\" to \"[X.FOO]\", etc.") | |
422 | (file) | |
423 | Lisp_Object file; | |
424 | { | |
425 | char *buf; | |
0bf2eed2 | 426 | Lisp_Object handler; |
570d7624 JB |
427 | |
428 | CHECK_STRING (file, 0); | |
265a9e55 | 429 | if (NILP (file)) |
570d7624 | 430 | return Qnil; |
0bf2eed2 RS |
431 | |
432 | /* If the file name has special constructs in it, | |
433 | call the corresponding file handler. */ | |
642ef245 | 434 | handler = Ffind_file_name_handler (file); |
0bf2eed2 RS |
435 | if (!NILP (handler)) |
436 | return call2 (handler, Qfile_name_as_directory, file); | |
437 | ||
570d7624 JB |
438 | buf = (char *) alloca (XSTRING (file)->size + 10); |
439 | return build_string (file_name_as_directory (buf, XSTRING (file)->data)); | |
440 | } | |
441 | \f | |
442 | /* | |
443 | * Convert from directory name to filename. | |
444 | * On VMS: | |
445 | * xyzzy:[mukesh.emacs] => xyzzy:[mukesh]emacs.dir.1 | |
446 | * xyzzy:[mukesh] => xyzzy:[000000]mukesh.dir.1 | |
447 | * On UNIX, it's simple: just make sure there is a terminating / | |
448 | ||
449 | * Value is nonzero if the string output is different from the input. | |
450 | */ | |
451 | ||
452 | directory_file_name (src, dst) | |
453 | char *src, *dst; | |
454 | { | |
455 | long slen; | |
456 | #ifdef VMS | |
457 | long rlen; | |
458 | char * ptr, * rptr; | |
459 | char bracket; | |
460 | struct FAB fab = cc$rms_fab; | |
461 | struct NAM nam = cc$rms_nam; | |
462 | char esa[NAM$C_MAXRSS]; | |
463 | #endif /* VMS */ | |
464 | ||
465 | slen = strlen (src); | |
466 | #ifdef VMS | |
467 | if (! index (src, '/') | |
468 | && (src[slen - 1] == ']' | |
469 | || src[slen - 1] == ':' | |
470 | || src[slen - 1] == '>')) | |
471 | { | |
472 | /* VMS style - convert [x.y.z] to [x.y]z, [x] to [000000]x */ | |
473 | fab.fab$l_fna = src; | |
474 | fab.fab$b_fns = slen; | |
475 | fab.fab$l_nam = &nam; | |
476 | fab.fab$l_fop = FAB$M_NAM; | |
477 | ||
478 | nam.nam$l_esa = esa; | |
479 | nam.nam$b_ess = sizeof esa; | |
480 | nam.nam$b_nop |= NAM$M_SYNCHK; | |
481 | ||
482 | /* We call SYS$PARSE to handle such things as [--] for us. */ | |
483 | if (SYS$PARSE(&fab, 0, 0) == RMS$_NORMAL) | |
484 | { | |
485 | slen = nam.nam$b_esl; | |
486 | if (esa[slen - 1] == ';' && esa[slen - 2] == '.') | |
487 | slen -= 2; | |
488 | esa[slen] = '\0'; | |
489 | src = esa; | |
490 | } | |
491 | if (src[slen - 1] != ']' && src[slen - 1] != '>') | |
492 | { | |
493 | /* what about when we have logical_name:???? */ | |
494 | if (src[slen - 1] == ':') | |
495 | { /* Xlate logical name and see what we get */ | |
496 | ptr = strcpy (dst, src); /* upper case for getenv */ | |
497 | while (*ptr) | |
498 | { | |
499 | if ('a' <= *ptr && *ptr <= 'z') | |
500 | *ptr -= 040; | |
501 | ptr++; | |
502 | } | |
503 | dst[slen - 1] = 0; /* remove colon */ | |
504 | if (!(src = egetenv (dst))) | |
505 | return 0; | |
506 | /* should we jump to the beginning of this procedure? | |
507 | Good points: allows us to use logical names that xlate | |
508 | to Unix names, | |
509 | Bad points: can be a problem if we just translated to a device | |
510 | name... | |
511 | For now, I'll punt and always expect VMS names, and hope for | |
512 | the best! */ | |
513 | slen = strlen (src); | |
514 | if (src[slen - 1] != ']' && src[slen - 1] != '>') | |
515 | { /* no recursion here! */ | |
516 | strcpy (dst, src); | |
517 | return 0; | |
518 | } | |
519 | } | |
520 | else | |
521 | { /* not a directory spec */ | |
522 | strcpy (dst, src); | |
523 | return 0; | |
524 | } | |
525 | } | |
526 | bracket = src[slen - 1]; | |
527 | ||
528 | /* If bracket is ']' or '>', bracket - 2 is the corresponding | |
529 | opening bracket. */ | |
bfb61299 JB |
530 | ptr = index (src, bracket - 2); |
531 | if (ptr == 0) | |
570d7624 JB |
532 | { /* no opening bracket */ |
533 | strcpy (dst, src); | |
534 | return 0; | |
535 | } | |
536 | if (!(rptr = rindex (src, '.'))) | |
537 | rptr = ptr; | |
538 | slen = rptr - src; | |
539 | strncpy (dst, src, slen); | |
540 | dst[slen] = '\0'; | |
541 | if (*rptr == '.') | |
542 | { | |
543 | dst[slen++] = bracket; | |
544 | dst[slen] = '\0'; | |
545 | } | |
546 | else | |
547 | { | |
548 | /* If we have the top-level of a rooted directory (i.e. xx:[000000]), | |
549 | then translate the device and recurse. */ | |
550 | if (dst[slen - 1] == ':' | |
551 | && dst[slen - 2] != ':' /* skip decnet nodes */ | |
552 | && strcmp(src + slen, "[000000]") == 0) | |
553 | { | |
554 | dst[slen - 1] = '\0'; | |
555 | if ((ptr = egetenv (dst)) | |
556 | && (rlen = strlen (ptr) - 1) > 0 | |
557 | && (ptr[rlen] == ']' || ptr[rlen] == '>') | |
558 | && ptr[rlen - 1] == '.') | |
559 | { | |
72b21817 RS |
560 | char * buf = (char *) alloca (strlen (ptr) + 1); |
561 | strcpy (buf, ptr); | |
562 | buf[rlen - 1] = ']'; | |
563 | buf[rlen] = '\0'; | |
564 | return directory_file_name (buf, dst); | |
570d7624 JB |
565 | } |
566 | else | |
567 | dst[slen - 1] = ':'; | |
568 | } | |
569 | strcat (dst, "[000000]"); | |
570 | slen += 8; | |
571 | } | |
572 | rptr++; | |
573 | rlen = strlen (rptr) - 1; | |
574 | strncat (dst, rptr, rlen); | |
575 | dst[slen + rlen] = '\0'; | |
576 | strcat (dst, ".DIR.1"); | |
577 | return 1; | |
578 | } | |
579 | #endif /* VMS */ | |
580 | /* Process as Unix format: just remove any final slash. | |
581 | But leave "/" unchanged; do not change it to "". */ | |
582 | strcpy (dst, src); | |
4c3c22f3 RS |
583 | if (slen > 1 |
584 | && dst[slen - 1] == '/' | |
585 | #ifdef MSDOS | |
586 | && dst[slen - 2] != ':' | |
587 | #endif | |
588 | ) | |
570d7624 JB |
589 | dst[slen - 1] = 0; |
590 | return 1; | |
591 | } | |
592 | ||
593 | DEFUN ("directory-file-name", Fdirectory_file_name, Sdirectory_file_name, | |
594 | 1, 1, 0, | |
595 | "Returns the file name of the directory named DIR.\n\ | |
596 | This is the name of the file that holds the data for the directory DIR.\n\ | |
597 | This operation exists because a directory is also a file, but its name as\n\ | |
598 | a directory is different from its name as a file.\n\ | |
599 | In Unix-syntax, this function just removes the final slash.\n\ | |
600 | On VMS, given a VMS-syntax directory name such as \"[X.Y]\",\n\ | |
601 | it returns a file name such as \"[X]Y.DIR.1\".") | |
602 | (directory) | |
603 | Lisp_Object directory; | |
604 | { | |
605 | char *buf; | |
0bf2eed2 | 606 | Lisp_Object handler; |
570d7624 JB |
607 | |
608 | CHECK_STRING (directory, 0); | |
609 | ||
265a9e55 | 610 | if (NILP (directory)) |
570d7624 | 611 | return Qnil; |
0bf2eed2 RS |
612 | |
613 | /* If the file name has special constructs in it, | |
614 | call the corresponding file handler. */ | |
642ef245 | 615 | handler = Ffind_file_name_handler (directory); |
0bf2eed2 RS |
616 | if (!NILP (handler)) |
617 | return call2 (handler, Qdirectory_file_name, directory); | |
618 | ||
570d7624 JB |
619 | #ifdef VMS |
620 | /* 20 extra chars is insufficient for VMS, since we might perform a | |
621 | logical name translation. an equivalence string can be up to 255 | |
622 | chars long, so grab that much extra space... - sss */ | |
623 | buf = (char *) alloca (XSTRING (directory)->size + 20 + 255); | |
624 | #else | |
625 | buf = (char *) alloca (XSTRING (directory)->size + 20); | |
626 | #endif | |
627 | directory_file_name (XSTRING (directory)->data, buf); | |
628 | return build_string (buf); | |
629 | } | |
630 | ||
631 | DEFUN ("make-temp-name", Fmake_temp_name, Smake_temp_name, 1, 1, 0, | |
632 | "Generate temporary file name (string) starting with PREFIX (a string).\n\ | |
633 | The Emacs process number forms part of the result,\n\ | |
634 | so there is no danger of generating a name being used by another process.") | |
635 | (prefix) | |
636 | Lisp_Object prefix; | |
637 | { | |
638 | Lisp_Object val; | |
639 | val = concat2 (prefix, build_string ("XXXXXX")); | |
640 | mktemp (XSTRING (val)->data); | |
641 | return val; | |
642 | } | |
643 | \f | |
644 | DEFUN ("expand-file-name", Fexpand_file_name, Sexpand_file_name, 1, 2, 0, | |
645 | "Convert FILENAME to absolute, and canonicalize it.\n\ | |
646 | Second arg DEFAULT is directory to start with if FILENAME is relative\n\ | |
647 | (does not start with slash); if DEFAULT is nil or missing,\n\ | |
648 | the current buffer's value of default-directory is used.\n\ | |
b72dea2a JB |
649 | Path components that are `.' are removed, and \n\ |
650 | path components followed by `..' are removed, along with the `..' itself;\n\ | |
651 | note that these simplifications are done without checking the resulting\n\ | |
652 | paths in the file system.\n\ | |
653 | An initial `~/' expands to your home directory.\n\ | |
654 | An initial `~USER/' expands to USER's home directory.\n\ | |
570d7624 JB |
655 | See also the function `substitute-in-file-name'.") |
656 | (name, defalt) | |
657 | Lisp_Object name, defalt; | |
658 | { | |
659 | unsigned char *nm; | |
660 | ||
661 | register unsigned char *newdir, *p, *o; | |
662 | int tlen; | |
663 | unsigned char *target; | |
664 | struct passwd *pw; | |
570d7624 JB |
665 | #ifdef VMS |
666 | unsigned char * colon = 0; | |
667 | unsigned char * close = 0; | |
668 | unsigned char * slash = 0; | |
669 | unsigned char * brack = 0; | |
670 | int lbrack = 0, rbrack = 0; | |
671 | int dots = 0; | |
672 | #endif /* VMS */ | |
4c3c22f3 RS |
673 | #ifdef MSDOS /* Demacs 1.1.2 91/10/20 Manabu Higashida */ |
674 | int drive = -1; | |
675 | int relpath = 0; | |
676 | unsigned char *tmp, *defdir; | |
677 | #endif | |
0bf2eed2 | 678 | Lisp_Object handler; |
570d7624 JB |
679 | |
680 | CHECK_STRING (name, 0); | |
681 | ||
0bf2eed2 RS |
682 | /* If the file name has special constructs in it, |
683 | call the corresponding file handler. */ | |
642ef245 | 684 | handler = Ffind_file_name_handler (name); |
0bf2eed2 | 685 | if (!NILP (handler)) |
09121adc | 686 | return call3 (handler, Qexpand_file_name, name, defalt); |
0bf2eed2 | 687 | |
4ad827c5 RS |
688 | /* Use the buffer's default-directory if DEFALT is omitted. */ |
689 | if (NILP (defalt)) | |
690 | defalt = current_buffer->directory; | |
691 | CHECK_STRING (defalt, 1); | |
692 | ||
f14b1c68 JB |
693 | /* Make sure DEFALT is properly expanded. |
694 | It would be better to do this down below where we actually use | |
695 | defalt. Unfortunately, calling Fexpand_file_name recursively | |
696 | could invoke GC, and the strings might be relocated. This would | |
697 | be annoying because we have pointers into strings lying around | |
698 | that would need adjusting, and people would add new pointers to | |
699 | the code and forget to adjust them, resulting in intermittent bugs. | |
4ad827c5 RS |
700 | Putting this call here avoids all that crud. |
701 | ||
702 | The EQ test avoids infinite recursion. */ | |
703 | if (! NILP (defalt) && !EQ (defalt, name) | |
704 | /* This saves time in a common case. */ | |
705 | && XSTRING (defalt)->data[0] != '/') | |
f14b1c68 JB |
706 | { |
707 | struct gcpro gcpro1; | |
708 | ||
709 | GCPRO1 (name); | |
710 | defalt = Fexpand_file_name (defalt, Qnil); | |
711 | UNGCPRO; | |
712 | } | |
713 | ||
570d7624 JB |
714 | #ifdef VMS |
715 | /* Filenames on VMS are always upper case. */ | |
716 | name = Fupcase (name); | |
717 | #endif | |
4c3c22f3 RS |
718 | #ifdef FILE_SYSTEM_CASE |
719 | name = FILE_SYSTEM_CASE (name); | |
720 | #endif | |
570d7624 JB |
721 | |
722 | nm = XSTRING (name)->data; | |
723 | ||
4c3c22f3 RS |
724 | #ifdef MSDOS |
725 | /* firstly, strip drive name. */ | |
726 | { | |
727 | unsigned char *colon = rindex (nm, ':'); | |
728 | if (colon) | |
729 | if (nm == colon) | |
730 | nm++; | |
731 | else | |
732 | { | |
733 | drive = tolower (colon[-1]) - 'a'; | |
734 | nm = colon + 1; | |
735 | if (*nm != '/') | |
736 | { | |
737 | defdir = alloca (MAXPATHLEN + 1); | |
738 | relpath = getdefdir (drive + 1, defdir); | |
739 | } | |
740 | } | |
741 | } | |
742 | #endif | |
743 | ||
570d7624 JB |
744 | /* If nm is absolute, flush ...// and detect /./ and /../. |
745 | If no /./ or /../ we can return right away. */ | |
746 | if ( | |
747 | nm[0] == '/' | |
748 | #ifdef VMS | |
749 | || index (nm, ':') | |
750 | #endif /* VMS */ | |
751 | ) | |
752 | { | |
f14b1c68 JB |
753 | /* If it turns out that the filename we want to return is just a |
754 | suffix of FILENAME, we don't need to go through and edit | |
755 | things; we just need to construct a new string using data | |
756 | starting at the middle of FILENAME. If we set lose to a | |
757 | non-zero value, that means we've discovered that we can't do | |
758 | that cool trick. */ | |
759 | int lose = 0; | |
760 | ||
570d7624 | 761 | p = nm; |
570d7624 JB |
762 | while (*p) |
763 | { | |
c77d647e JB |
764 | /* Since we know the path is absolute, we can assume that each |
765 | element starts with a "/". */ | |
766 | ||
767 | /* "//" anywhere isn't necessarily hairy; we just start afresh | |
768 | with the second slash. */ | |
570d7624 JB |
769 | if (p[0] == '/' && p[1] == '/' |
770 | #ifdef APOLLO | |
771 | /* // at start of filename is meaningful on Apollo system */ | |
772 | && nm != p | |
773 | #endif /* APOLLO */ | |
774 | ) | |
775 | nm = p + 1; | |
c77d647e JB |
776 | |
777 | /* "~" is hairy as the start of any path element. */ | |
570d7624 JB |
778 | if (p[0] == '/' && p[1] == '~') |
779 | nm = p + 1, lose = 1; | |
c77d647e JB |
780 | |
781 | /* "." and ".." are hairy. */ | |
782 | if (p[0] == '/' | |
783 | && p[1] == '.' | |
784 | && (p[2] == '/' | |
785 | || p[2] == 0 | |
786 | || (p[2] == '.' && (p[3] == '/' | |
787 | || p[3] == 0)))) | |
570d7624 JB |
788 | lose = 1; |
789 | #ifdef VMS | |
790 | if (p[0] == '\\') | |
791 | lose = 1; | |
792 | if (p[0] == '/') { | |
793 | /* if dev:[dir]/, move nm to / */ | |
794 | if (!slash && p > nm && (brack || colon)) { | |
795 | nm = (brack ? brack + 1 : colon + 1); | |
796 | lbrack = rbrack = 0; | |
797 | brack = 0; | |
798 | colon = 0; | |
799 | } | |
800 | slash = p; | |
801 | } | |
802 | if (p[0] == '-') | |
803 | #ifndef VMS4_4 | |
804 | /* VMS pre V4.4,convert '-'s in filenames. */ | |
805 | if (lbrack == rbrack) | |
806 | { | |
807 | if (dots < 2) /* this is to allow negative version numbers */ | |
808 | p[0] = '_'; | |
809 | } | |
810 | else | |
811 | #endif /* VMS4_4 */ | |
812 | if (lbrack > rbrack && | |
813 | ((p[-1] == '.' || p[-1] == '[' || p[-1] == '<') && | |
814 | (p[1] == '.' || p[1] == ']' || p[1] == '>'))) | |
815 | lose = 1; | |
816 | #ifndef VMS4_4 | |
817 | else | |
818 | p[0] = '_'; | |
819 | #endif /* VMS4_4 */ | |
820 | /* count open brackets, reset close bracket pointer */ | |
821 | if (p[0] == '[' || p[0] == '<') | |
822 | lbrack++, brack = 0; | |
823 | /* count close brackets, set close bracket pointer */ | |
824 | if (p[0] == ']' || p[0] == '>') | |
825 | rbrack++, brack = p; | |
826 | /* detect ][ or >< */ | |
827 | if ((p[0] == ']' || p[0] == '>') && (p[1] == '[' || p[1] == '<')) | |
828 | lose = 1; | |
829 | if ((p[0] == ':' || p[0] == ']' || p[0] == '>') && p[1] == '~') | |
830 | nm = p + 1, lose = 1; | |
831 | if (p[0] == ':' && (colon || slash)) | |
832 | /* if dev1:[dir]dev2:, move nm to dev2: */ | |
833 | if (brack) | |
834 | { | |
835 | nm = brack + 1; | |
836 | brack = 0; | |
837 | } | |
838 | /* if /pathname/dev:, move nm to dev: */ | |
839 | else if (slash) | |
840 | nm = slash + 1; | |
841 | /* if node::dev:, move colon following dev */ | |
842 | else if (colon && colon[-1] == ':') | |
843 | colon = p; | |
844 | /* if dev1:dev2:, move nm to dev2: */ | |
845 | else if (colon && colon[-1] != ':') | |
846 | { | |
847 | nm = colon + 1; | |
848 | colon = 0; | |
849 | } | |
850 | if (p[0] == ':' && !colon) | |
851 | { | |
852 | if (p[1] == ':') | |
853 | p++; | |
854 | colon = p; | |
855 | } | |
856 | if (lbrack == rbrack) | |
857 | if (p[0] == ';') | |
858 | dots = 2; | |
859 | else if (p[0] == '.') | |
860 | dots++; | |
861 | #endif /* VMS */ | |
862 | p++; | |
863 | } | |
864 | if (!lose) | |
865 | { | |
866 | #ifdef VMS | |
867 | if (index (nm, '/')) | |
868 | return build_string (sys_translate_unix (nm)); | |
869 | #endif /* VMS */ | |
4c3c22f3 | 870 | #ifndef MSDOS |
570d7624 JB |
871 | if (nm == XSTRING (name)->data) |
872 | return name; | |
873 | return build_string (nm); | |
4c3c22f3 | 874 | #endif |
570d7624 JB |
875 | } |
876 | } | |
877 | ||
878 | /* Now determine directory to start with and put it in newdir */ | |
879 | ||
880 | newdir = 0; | |
881 | ||
882 | if (nm[0] == '~') /* prefix ~ */ | |
c77d647e JB |
883 | { |
884 | if (nm[1] == '/' | |
570d7624 | 885 | #ifdef VMS |
c77d647e JB |
886 | || nm[1] == ':' |
887 | #endif /* VMS */ | |
888 | || nm[1] == 0) /* ~ by itself */ | |
889 | { | |
890 | if (!(newdir = (unsigned char *) egetenv ("HOME"))) | |
891 | newdir = (unsigned char *) ""; | |
4c3c22f3 RS |
892 | #ifdef MSDOS |
893 | dostounix_filename (newdir); | |
894 | #endif | |
c77d647e | 895 | nm++; |
570d7624 | 896 | #ifdef VMS |
c77d647e JB |
897 | nm++; /* Don't leave the slash in nm. */ |
898 | #endif /* VMS */ | |
899 | } | |
900 | else /* ~user/filename */ | |
901 | { | |
902 | for (p = nm; *p && (*p != '/' | |
570d7624 | 903 | #ifdef VMS |
c77d647e JB |
904 | && *p != ':' |
905 | #endif /* VMS */ | |
906 | ); p++); | |
907 | o = (unsigned char *) alloca (p - nm + 1); | |
908 | bcopy ((char *) nm, o, p - nm); | |
909 | o [p - nm] = 0; | |
910 | ||
911 | pw = (struct passwd *) getpwnam (o + 1); | |
912 | if (pw) | |
913 | { | |
914 | newdir = (unsigned char *) pw -> pw_dir; | |
570d7624 | 915 | #ifdef VMS |
c77d647e | 916 | nm = p + 1; /* skip the terminator */ |
570d7624 | 917 | #else |
c77d647e JB |
918 | nm = p; |
919 | #endif /* VMS */ | |
920 | } | |
e5d77022 | 921 | |
c77d647e JB |
922 | /* If we don't find a user of that name, leave the name |
923 | unchanged; don't move nm forward to p. */ | |
924 | } | |
925 | } | |
570d7624 JB |
926 | |
927 | if (nm[0] != '/' | |
928 | #ifdef VMS | |
929 | && !index (nm, ':') | |
930 | #endif /* not VMS */ | |
4c3c22f3 RS |
931 | #ifdef MSDOS |
932 | && drive == -1 | |
933 | #endif | |
570d7624 JB |
934 | && !newdir) |
935 | { | |
570d7624 JB |
936 | newdir = XSTRING (defalt)->data; |
937 | } | |
938 | ||
4c3c22f3 RS |
939 | #ifdef MSDOS |
940 | if (newdir == 0 && relpath) | |
941 | newdir = defdir; | |
942 | #endif | |
bfb61299 JB |
943 | if (newdir != 0) |
944 | { | |
945 | /* Get rid of any slash at the end of newdir. */ | |
946 | int length = strlen (newdir); | |
eabf01d4 RS |
947 | /* Adding `length > 1 &&' makes ~ expand into / when homedir |
948 | is the root dir. People disagree about whether that is right. | |
949 | Anyway, we can't take the risk of this change now. */ | |
4c3c22f3 RS |
950 | #ifdef MSDOS |
951 | if (newdir[1] != ':' && length > 1) | |
952 | #endif | |
eabf01d4 | 953 | if (newdir[length - 1] == '/') |
bfb61299 JB |
954 | { |
955 | unsigned char *temp = (unsigned char *) alloca (length); | |
956 | bcopy (newdir, temp, length - 1); | |
957 | temp[length - 1] = 0; | |
958 | newdir = temp; | |
959 | } | |
960 | tlen = length + 1; | |
961 | } | |
962 | else | |
963 | tlen = 0; | |
570d7624 | 964 | |
bfb61299 JB |
965 | /* Now concatenate the directory and name to new space in the stack frame */ |
966 | tlen += strlen (nm) + 1; | |
4c3c22f3 RS |
967 | #ifdef MSDOS |
968 | /* Add reserved space for drive name. */ | |
969 | target = (unsigned char *) alloca (tlen + 2) + 2; | |
970 | #else | |
570d7624 | 971 | target = (unsigned char *) alloca (tlen); |
4c3c22f3 | 972 | #endif |
570d7624 JB |
973 | *target = 0; |
974 | ||
975 | if (newdir) | |
976 | { | |
977 | #ifndef VMS | |
978 | if (nm[0] == 0 || nm[0] == '/') | |
979 | strcpy (target, newdir); | |
980 | else | |
981 | #endif | |
c77d647e | 982 | file_name_as_directory (target, newdir); |
570d7624 JB |
983 | } |
984 | ||
985 | strcat (target, nm); | |
986 | #ifdef VMS | |
987 | if (index (target, '/')) | |
988 | strcpy (target, sys_translate_unix (target)); | |
989 | #endif /* VMS */ | |
990 | ||
c77d647e | 991 | /* Now canonicalize by removing /. and /foo/.. if they appear. */ |
570d7624 JB |
992 | |
993 | p = target; | |
994 | o = target; | |
995 | ||
996 | while (*p) | |
997 | { | |
998 | #ifdef VMS | |
999 | if (*p != ']' && *p != '>' && *p != '-') | |
1000 | { | |
1001 | if (*p == '\\') | |
1002 | p++; | |
1003 | *o++ = *p++; | |
1004 | } | |
1005 | else if ((p[0] == ']' || p[0] == '>') && p[0] == p[1] + 2) | |
1006 | /* brackets are offset from each other by 2 */ | |
1007 | { | |
1008 | p += 2; | |
1009 | if (*p != '.' && *p != '-' && o[-1] != '.') | |
1010 | /* convert [foo][bar] to [bar] */ | |
1011 | while (o[-1] != '[' && o[-1] != '<') | |
1012 | o--; | |
1013 | else if (*p == '-' && *o != '.') | |
1014 | *--p = '.'; | |
1015 | } | |
1016 | else if (p[0] == '-' && o[-1] == '.' && | |
1017 | (p[1] == '.' || p[1] == ']' || p[1] == '>')) | |
1018 | /* flush .foo.- ; leave - if stopped by '[' or '<' */ | |
1019 | { | |
1020 | do | |
1021 | o--; | |
1022 | while (o[-1] != '.' && o[-1] != '[' && o[-1] != '<'); | |
1023 | if (p[1] == '.') /* foo.-.bar ==> bar*/ | |
1024 | p += 2; | |
1025 | else if (o[-1] == '.') /* '.foo.-]' ==> ']' */ | |
1026 | p++, o--; | |
1027 | /* else [foo.-] ==> [-] */ | |
1028 | } | |
1029 | else | |
1030 | { | |
1031 | #ifndef VMS4_4 | |
1032 | if (*p == '-' && | |
1033 | o[-1] != '[' && o[-1] != '<' && o[-1] != '.' && | |
1034 | p[1] != ']' && p[1] != '>' && p[1] != '.') | |
1035 | *p = '_'; | |
1036 | #endif /* VMS4_4 */ | |
1037 | *o++ = *p++; | |
1038 | } | |
1039 | #else /* not VMS */ | |
1040 | if (*p != '/') | |
1041 | { | |
1042 | *o++ = *p++; | |
1043 | } | |
1044 | else if (!strncmp (p, "//", 2) | |
1045 | #ifdef APOLLO | |
1046 | /* // at start of filename is meaningful in Apollo system */ | |
1047 | && o != target | |
1048 | #endif /* APOLLO */ | |
1049 | ) | |
1050 | { | |
1051 | o = target; | |
1052 | p++; | |
1053 | } | |
c77d647e JB |
1054 | else if (p[0] == '/' |
1055 | && p[1] == '.' | |
1056 | && (p[2] == '/' | |
1057 | || p[2] == 0)) | |
1058 | { | |
1059 | /* If "/." is the entire filename, keep the "/". Otherwise, | |
1060 | just delete the whole "/.". */ | |
1061 | if (o == target && p[2] == '\0') | |
1062 | *o++ = *p; | |
1063 | p += 2; | |
1064 | } | |
570d7624 JB |
1065 | else if (!strncmp (p, "/..", 3) |
1066 | /* `/../' is the "superroot" on certain file systems. */ | |
1067 | && o != target | |
1068 | && (p[3] == '/' || p[3] == 0)) | |
1069 | { | |
1070 | while (o != target && *--o != '/') | |
1071 | ; | |
1072 | #ifdef APOLLO | |
1073 | if (o == target + 1 && o[-1] == '/' && o[0] == '/') | |
1074 | ++o; | |
1075 | else | |
1076 | #endif /* APOLLO */ | |
1077 | if (o == target && *o == '/') | |
1078 | ++o; | |
1079 | p += 3; | |
1080 | } | |
1081 | else | |
1082 | { | |
1083 | *o++ = *p++; | |
1084 | } | |
1085 | #endif /* not VMS */ | |
1086 | } | |
1087 | ||
4c3c22f3 RS |
1088 | #ifdef MSDOS |
1089 | /* at last, set drive name. */ | |
1090 | if (target[1] != ':') | |
1091 | { | |
1092 | target -= 2; | |
1093 | target[0] = (drive < 0 ? getdisk () : drive) + 'a'; | |
1094 | target[1] = ':'; | |
1095 | } | |
1096 | #endif | |
1097 | ||
570d7624 JB |
1098 | return make_string (target, o - target); |
1099 | } | |
1100 | #if 0 | |
e5d77022 JB |
1101 | /* Changed this DEFUN to a DEAFUN, so as not to confuse `make-docfile'. |
1102 | DEAFUN ("expand-file-name", Fexpand_file_name, Sexpand_file_name, 1, 2, 0, | |
570d7624 JB |
1103 | "Convert FILENAME to absolute, and canonicalize it.\n\ |
1104 | Second arg DEFAULT is directory to start with if FILENAME is relative\n\ | |
1105 | (does not start with slash); if DEFAULT is nil or missing,\n\ | |
1106 | the current buffer's value of default-directory is used.\n\ | |
1107 | Filenames containing `.' or `..' as components are simplified;\n\ | |
1108 | initial `~/' expands to your home directory.\n\ | |
1109 | See also the function `substitute-in-file-name'.") | |
1110 | (name, defalt) | |
1111 | Lisp_Object name, defalt; | |
1112 | { | |
1113 | unsigned char *nm; | |
1114 | ||
1115 | register unsigned char *newdir, *p, *o; | |
1116 | int tlen; | |
1117 | unsigned char *target; | |
1118 | struct passwd *pw; | |
1119 | int lose; | |
1120 | #ifdef VMS | |
1121 | unsigned char * colon = 0; | |
1122 | unsigned char * close = 0; | |
1123 | unsigned char * slash = 0; | |
1124 | unsigned char * brack = 0; | |
1125 | int lbrack = 0, rbrack = 0; | |
1126 | int dots = 0; | |
1127 | #endif /* VMS */ | |
1128 | ||
1129 | CHECK_STRING (name, 0); | |
1130 | ||
1131 | #ifdef VMS | |
1132 | /* Filenames on VMS are always upper case. */ | |
1133 | name = Fupcase (name); | |
1134 | #endif | |
1135 | ||
1136 | nm = XSTRING (name)->data; | |
1137 | ||
1138 | /* If nm is absolute, flush ...// and detect /./ and /../. | |
1139 | If no /./ or /../ we can return right away. */ | |
1140 | if ( | |
1141 | nm[0] == '/' | |
1142 | #ifdef VMS | |
1143 | || index (nm, ':') | |
1144 | #endif /* VMS */ | |
1145 | ) | |
1146 | { | |
1147 | p = nm; | |
1148 | lose = 0; | |
1149 | while (*p) | |
1150 | { | |
1151 | if (p[0] == '/' && p[1] == '/' | |
1152 | #ifdef APOLLO | |
1153 | /* // at start of filename is meaningful on Apollo system */ | |
1154 | && nm != p | |
1155 | #endif /* APOLLO */ | |
1156 | ) | |
1157 | nm = p + 1; | |
1158 | if (p[0] == '/' && p[1] == '~') | |
1159 | nm = p + 1, lose = 1; | |
1160 | if (p[0] == '/' && p[1] == '.' | |
1161 | && (p[2] == '/' || p[2] == 0 | |
1162 | || (p[2] == '.' && (p[3] == '/' || p[3] == 0)))) | |
1163 | lose = 1; | |
1164 | #ifdef VMS | |
1165 | if (p[0] == '\\') | |
1166 | lose = 1; | |
1167 | if (p[0] == '/') { | |
1168 | /* if dev:[dir]/, move nm to / */ | |
1169 | if (!slash && p > nm && (brack || colon)) { | |
1170 | nm = (brack ? brack + 1 : colon + 1); | |
1171 | lbrack = rbrack = 0; | |
1172 | brack = 0; | |
1173 | colon = 0; | |
1174 | } | |
1175 | slash = p; | |
1176 | } | |
1177 | if (p[0] == '-') | |
1178 | #ifndef VMS4_4 | |
1179 | /* VMS pre V4.4,convert '-'s in filenames. */ | |
1180 | if (lbrack == rbrack) | |
1181 | { | |
1182 | if (dots < 2) /* this is to allow negative version numbers */ | |
1183 | p[0] = '_'; | |
1184 | } | |
1185 | else | |
1186 | #endif /* VMS4_4 */ | |
1187 | if (lbrack > rbrack && | |
1188 | ((p[-1] == '.' || p[-1] == '[' || p[-1] == '<') && | |
1189 | (p[1] == '.' || p[1] == ']' || p[1] == '>'))) | |
1190 | lose = 1; | |
1191 | #ifndef VMS4_4 | |
1192 | else | |
1193 | p[0] = '_'; | |
1194 | #endif /* VMS4_4 */ | |
1195 | /* count open brackets, reset close bracket pointer */ | |
1196 | if (p[0] == '[' || p[0] == '<') | |
1197 | lbrack++, brack = 0; | |
1198 | /* count close brackets, set close bracket pointer */ | |
1199 | if (p[0] == ']' || p[0] == '>') | |
1200 | rbrack++, brack = p; | |
1201 | /* detect ][ or >< */ | |
1202 | if ((p[0] == ']' || p[0] == '>') && (p[1] == '[' || p[1] == '<')) | |
1203 | lose = 1; | |
1204 | if ((p[0] == ':' || p[0] == ']' || p[0] == '>') && p[1] == '~') | |
1205 | nm = p + 1, lose = 1; | |
1206 | if (p[0] == ':' && (colon || slash)) | |
1207 | /* if dev1:[dir]dev2:, move nm to dev2: */ | |
1208 | if (brack) | |
1209 | { | |
1210 | nm = brack + 1; | |
1211 | brack = 0; | |
1212 | } | |
1213 | /* if /pathname/dev:, move nm to dev: */ | |
1214 | else if (slash) | |
1215 | nm = slash + 1; | |
1216 | /* if node::dev:, move colon following dev */ | |
1217 | else if (colon && colon[-1] == ':') | |
1218 | colon = p; | |
1219 | /* if dev1:dev2:, move nm to dev2: */ | |
1220 | else if (colon && colon[-1] != ':') | |
1221 | { | |
1222 | nm = colon + 1; | |
1223 | colon = 0; | |
1224 | } | |
1225 | if (p[0] == ':' && !colon) | |
1226 | { | |
1227 | if (p[1] == ':') | |
1228 | p++; | |
1229 | colon = p; | |
1230 | } | |
1231 | if (lbrack == rbrack) | |
1232 | if (p[0] == ';') | |
1233 | dots = 2; | |
1234 | else if (p[0] == '.') | |
1235 | dots++; | |
1236 | #endif /* VMS */ | |
1237 | p++; | |
1238 | } | |
1239 | if (!lose) | |
1240 | { | |
1241 | #ifdef VMS | |
1242 | if (index (nm, '/')) | |
1243 | return build_string (sys_translate_unix (nm)); | |
1244 | #endif /* VMS */ | |
1245 | if (nm == XSTRING (name)->data) | |
1246 | return name; | |
1247 | return build_string (nm); | |
1248 | } | |
1249 | } | |
1250 | ||
1251 | /* Now determine directory to start with and put it in NEWDIR */ | |
1252 | ||
1253 | newdir = 0; | |
1254 | ||
1255 | if (nm[0] == '~') /* prefix ~ */ | |
1256 | if (nm[1] == '/' | |
1257 | #ifdef VMS | |
1258 | || nm[1] == ':' | |
1259 | #endif /* VMS */ | |
1260 | || nm[1] == 0)/* ~/filename */ | |
1261 | { | |
1262 | if (!(newdir = (unsigned char *) egetenv ("HOME"))) | |
1263 | newdir = (unsigned char *) ""; | |
1264 | nm++; | |
1265 | #ifdef VMS | |
1266 | nm++; /* Don't leave the slash in nm. */ | |
1267 | #endif /* VMS */ | |
1268 | } | |
1269 | else /* ~user/filename */ | |
1270 | { | |
1271 | /* Get past ~ to user */ | |
1272 | unsigned char *user = nm + 1; | |
1273 | /* Find end of name. */ | |
1274 | unsigned char *ptr = (unsigned char *) index (user, '/'); | |
1275 | int len = ptr ? ptr - user : strlen (user); | |
1276 | #ifdef VMS | |
1277 | unsigned char *ptr1 = index (user, ':'); | |
1278 | if (ptr1 != 0 && ptr1 - user < len) | |
1279 | len = ptr1 - user; | |
1280 | #endif /* VMS */ | |
1281 | /* Copy the user name into temp storage. */ | |
1282 | o = (unsigned char *) alloca (len + 1); | |
1283 | bcopy ((char *) user, o, len); | |
1284 | o[len] = 0; | |
1285 | ||
1286 | /* Look up the user name. */ | |
1287 | pw = (struct passwd *) getpwnam (o + 1); | |
1288 | if (!pw) | |
1289 | error ("\"%s\" isn't a registered user", o + 1); | |
1290 | ||
1291 | newdir = (unsigned char *) pw->pw_dir; | |
1292 | ||
1293 | /* Discard the user name from NM. */ | |
1294 | nm += len; | |
1295 | } | |
1296 | ||
1297 | if (nm[0] != '/' | |
1298 | #ifdef VMS | |
1299 | && !index (nm, ':') | |
1300 | #endif /* not VMS */ | |
1301 | && !newdir) | |
1302 | { | |
265a9e55 | 1303 | if (NILP (defalt)) |
570d7624 JB |
1304 | defalt = current_buffer->directory; |
1305 | CHECK_STRING (defalt, 1); | |
1306 | newdir = XSTRING (defalt)->data; | |
1307 | } | |
1308 | ||
1309 | /* Now concatenate the directory and name to new space in the stack frame */ | |
1310 | ||
1311 | tlen = (newdir ? strlen (newdir) + 1 : 0) + strlen (nm) + 1; | |
1312 | target = (unsigned char *) alloca (tlen); | |
1313 | *target = 0; | |
1314 | ||
1315 | if (newdir) | |
1316 | { | |
1317 | #ifndef VMS | |
1318 | if (nm[0] == 0 || nm[0] == '/') | |
1319 | strcpy (target, newdir); | |
1320 | else | |
1321 | #endif | |
1322 | file_name_as_directory (target, newdir); | |
1323 | } | |
1324 | ||
1325 | strcat (target, nm); | |
1326 | #ifdef VMS | |
1327 | if (index (target, '/')) | |
1328 | strcpy (target, sys_translate_unix (target)); | |
1329 | #endif /* VMS */ | |
1330 | ||
1331 | /* Now canonicalize by removing /. and /foo/.. if they appear */ | |
1332 | ||
1333 | p = target; | |
1334 | o = target; | |
1335 | ||
1336 | while (*p) | |
1337 | { | |
1338 | #ifdef VMS | |
1339 | if (*p != ']' && *p != '>' && *p != '-') | |
1340 | { | |
1341 | if (*p == '\\') | |
1342 | p++; | |
1343 | *o++ = *p++; | |
1344 | } | |
1345 | else if ((p[0] == ']' || p[0] == '>') && p[0] == p[1] + 2) | |
1346 | /* brackets are offset from each other by 2 */ | |
1347 | { | |
1348 | p += 2; | |
1349 | if (*p != '.' && *p != '-' && o[-1] != '.') | |
1350 | /* convert [foo][bar] to [bar] */ | |
1351 | while (o[-1] != '[' && o[-1] != '<') | |
1352 | o--; | |
1353 | else if (*p == '-' && *o != '.') | |
1354 | *--p = '.'; | |
1355 | } | |
1356 | else if (p[0] == '-' && o[-1] == '.' && | |
1357 | (p[1] == '.' || p[1] == ']' || p[1] == '>')) | |
1358 | /* flush .foo.- ; leave - if stopped by '[' or '<' */ | |
1359 | { | |
1360 | do | |
1361 | o--; | |
1362 | while (o[-1] != '.' && o[-1] != '[' && o[-1] != '<'); | |
1363 | if (p[1] == '.') /* foo.-.bar ==> bar*/ | |
1364 | p += 2; | |
1365 | else if (o[-1] == '.') /* '.foo.-]' ==> ']' */ | |
1366 | p++, o--; | |
1367 | /* else [foo.-] ==> [-] */ | |
1368 | } | |
1369 | else | |
1370 | { | |
1371 | #ifndef VMS4_4 | |
1372 | if (*p == '-' && | |
1373 | o[-1] != '[' && o[-1] != '<' && o[-1] != '.' && | |
1374 | p[1] != ']' && p[1] != '>' && p[1] != '.') | |
1375 | *p = '_'; | |
1376 | #endif /* VMS4_4 */ | |
1377 | *o++ = *p++; | |
1378 | } | |
1379 | #else /* not VMS */ | |
1380 | if (*p != '/') | |
1381 | { | |
1382 | *o++ = *p++; | |
1383 | } | |
1384 | else if (!strncmp (p, "//", 2) | |
1385 | #ifdef APOLLO | |
1386 | /* // at start of filename is meaningful in Apollo system */ | |
1387 | && o != target | |
1388 | #endif /* APOLLO */ | |
1389 | ) | |
1390 | { | |
1391 | o = target; | |
1392 | p++; | |
1393 | } | |
1394 | else if (p[0] == '/' && p[1] == '.' && | |
1395 | (p[2] == '/' || p[2] == 0)) | |
1396 | p += 2; | |
1397 | else if (!strncmp (p, "/..", 3) | |
1398 | /* `/../' is the "superroot" on certain file systems. */ | |
1399 | && o != target | |
1400 | && (p[3] == '/' || p[3] == 0)) | |
1401 | { | |
1402 | while (o != target && *--o != '/') | |
1403 | ; | |
1404 | #ifdef APOLLO | |
1405 | if (o == target + 1 && o[-1] == '/' && o[0] == '/') | |
1406 | ++o; | |
1407 | else | |
1408 | #endif /* APOLLO */ | |
1409 | if (o == target && *o == '/') | |
1410 | ++o; | |
1411 | p += 3; | |
1412 | } | |
1413 | else | |
1414 | { | |
1415 | *o++ = *p++; | |
1416 | } | |
1417 | #endif /* not VMS */ | |
1418 | } | |
1419 | ||
1420 | return make_string (target, o - target); | |
1421 | } | |
1422 | #endif | |
1423 | \f | |
1424 | DEFUN ("substitute-in-file-name", Fsubstitute_in_file_name, | |
1425 | Ssubstitute_in_file_name, 1, 1, 0, | |
1426 | "Substitute environment variables referred to in FILENAME.\n\ | |
1427 | `$FOO' where FOO is an environment variable name means to substitute\n\ | |
1428 | the value of that variable. The variable name should be terminated\n\ | |
1429 | with a character not a letter, digit or underscore; otherwise, enclose\n\ | |
1430 | the entire variable name in braces.\n\ | |
1431 | If `/~' appears, all of FILENAME through that `/' is discarded.\n\n\ | |
1432 | On VMS, `$' substitution is not done; this function does little and only\n\ | |
1433 | duplicates what `expand-file-name' does.") | |
1434 | (string) | |
1435 | Lisp_Object string; | |
1436 | { | |
1437 | unsigned char *nm; | |
1438 | ||
1439 | register unsigned char *s, *p, *o, *x, *endp; | |
1440 | unsigned char *target; | |
1441 | int total = 0; | |
1442 | int substituted = 0; | |
1443 | unsigned char *xnm; | |
1444 | ||
1445 | CHECK_STRING (string, 0); | |
1446 | ||
1447 | nm = XSTRING (string)->data; | |
1448 | endp = nm + XSTRING (string)->size; | |
1449 | ||
1450 | /* If /~ or // appears, discard everything through first slash. */ | |
1451 | ||
1452 | for (p = nm; p != endp; p++) | |
1453 | { | |
1454 | if ((p[0] == '~' || | |
1455 | #ifdef APOLLO | |
1456 | /* // at start of file name is meaningful in Apollo system */ | |
1457 | (p[0] == '/' && p - 1 != nm) | |
1458 | #else /* not APOLLO */ | |
1459 | p[0] == '/' | |
1460 | #endif /* not APOLLO */ | |
1461 | ) | |
1462 | && p != nm && | |
1463 | #ifdef VMS | |
1464 | (p[-1] == ':' || p[-1] == ']' || p[-1] == '>' || | |
1465 | #endif /* VMS */ | |
1466 | p[-1] == '/') | |
1467 | #ifdef VMS | |
1468 | ) | |
1469 | #endif /* VMS */ | |
1470 | { | |
1471 | nm = p; | |
1472 | substituted = 1; | |
1473 | } | |
4c3c22f3 RS |
1474 | #ifdef MSDOS |
1475 | if (p[0] && p[1] == ':') | |
1476 | { | |
1477 | nm = p; | |
1478 | substituted = 1; | |
1479 | } | |
1480 | #endif /* MSDOS */ | |
570d7624 JB |
1481 | } |
1482 | ||
1483 | #ifdef VMS | |
1484 | return build_string (nm); | |
1485 | #else | |
1486 | ||
1487 | /* See if any variables are substituted into the string | |
1488 | and find the total length of their values in `total' */ | |
1489 | ||
1490 | for (p = nm; p != endp;) | |
1491 | if (*p != '$') | |
1492 | p++; | |
1493 | else | |
1494 | { | |
1495 | p++; | |
1496 | if (p == endp) | |
1497 | goto badsubst; | |
1498 | else if (*p == '$') | |
1499 | { | |
1500 | /* "$$" means a single "$" */ | |
1501 | p++; | |
1502 | total -= 1; | |
1503 | substituted = 1; | |
1504 | continue; | |
1505 | } | |
1506 | else if (*p == '{') | |
1507 | { | |
1508 | o = ++p; | |
1509 | while (p != endp && *p != '}') p++; | |
1510 | if (*p != '}') goto missingclose; | |
1511 | s = p; | |
1512 | } | |
1513 | else | |
1514 | { | |
1515 | o = p; | |
1516 | while (p != endp && (isalnum (*p) || *p == '_')) p++; | |
1517 | s = p; | |
1518 | } | |
1519 | ||
1520 | /* Copy out the variable name */ | |
1521 | target = (unsigned char *) alloca (s - o + 1); | |
1522 | strncpy (target, o, s - o); | |
1523 | target[s - o] = 0; | |
4c3c22f3 RS |
1524 | #ifdef MSDOS |
1525 | strupr (target); /* $home == $HOME etc. */ | |
1526 | #endif | |
570d7624 JB |
1527 | |
1528 | /* Get variable value */ | |
1529 | o = (unsigned char *) egetenv (target); | |
1530 | /* The presence of this code makes vax 5.0 crash, for reasons yet unknown */ | |
1531 | #if 0 | |
1532 | #ifdef USG | |
1533 | if (!o && !strcmp (target, "USER")) | |
1534 | o = egetenv ("LOGNAME"); | |
1535 | #endif /* USG */ | |
1536 | #endif /* 0 */ | |
1537 | if (!o) goto badvar; | |
1538 | total += strlen (o); | |
1539 | substituted = 1; | |
1540 | } | |
1541 | ||
1542 | if (!substituted) | |
1543 | return string; | |
1544 | ||
1545 | /* If substitution required, recopy the string and do it */ | |
1546 | /* Make space in stack frame for the new copy */ | |
1547 | xnm = (unsigned char *) alloca (XSTRING (string)->size + total + 1); | |
1548 | x = xnm; | |
1549 | ||
1550 | /* Copy the rest of the name through, replacing $ constructs with values */ | |
1551 | for (p = nm; *p;) | |
1552 | if (*p != '$') | |
1553 | *x++ = *p++; | |
1554 | else | |
1555 | { | |
1556 | p++; | |
1557 | if (p == endp) | |
1558 | goto badsubst; | |
1559 | else if (*p == '$') | |
1560 | { | |
1561 | *x++ = *p++; | |
1562 | continue; | |
1563 | } | |
1564 | else if (*p == '{') | |
1565 | { | |
1566 | o = ++p; | |
1567 | while (p != endp && *p != '}') p++; | |
1568 | if (*p != '}') goto missingclose; | |
1569 | s = p++; | |
1570 | } | |
1571 | else | |
1572 | { | |
1573 | o = p; | |
1574 | while (p != endp && (isalnum (*p) || *p == '_')) p++; | |
1575 | s = p; | |
1576 | } | |
1577 | ||
1578 | /* Copy out the variable name */ | |
1579 | target = (unsigned char *) alloca (s - o + 1); | |
1580 | strncpy (target, o, s - o); | |
1581 | target[s - o] = 0; | |
4c3c22f3 RS |
1582 | #ifdef MSDOS |
1583 | strupr (target); /* $home == $HOME etc. */ | |
1584 | #endif | |
570d7624 JB |
1585 | |
1586 | /* Get variable value */ | |
1587 | o = (unsigned char *) egetenv (target); | |
1588 | /* The presence of this code makes vax 5.0 crash, for reasons yet unknown */ | |
1589 | #if 0 | |
1590 | #ifdef USG | |
1591 | if (!o && !strcmp (target, "USER")) | |
1592 | o = egetenv ("LOGNAME"); | |
1593 | #endif /* USG */ | |
1594 | #endif /* 0 */ | |
1595 | if (!o) | |
1596 | goto badvar; | |
1597 | ||
1598 | strcpy (x, o); | |
1599 | x += strlen (o); | |
1600 | } | |
1601 | ||
1602 | *x = 0; | |
1603 | ||
1604 | /* If /~ or // appears, discard everything through first slash. */ | |
1605 | ||
1606 | for (p = xnm; p != x; p++) | |
1607 | if ((p[0] == '~' || | |
1608 | #ifdef APOLLO | |
1609 | /* // at start of file name is meaningful in Apollo system */ | |
1610 | (p[0] == '/' && p - 1 != xnm) | |
1611 | #else /* not APOLLO */ | |
1612 | p[0] == '/' | |
1613 | #endif /* not APOLLO */ | |
1614 | ) | |
1615 | && p != nm && p[-1] == '/') | |
1616 | xnm = p; | |
4c3c22f3 RS |
1617 | #ifdef MSDOS |
1618 | else if (p[0] && p[1] == ':') | |
1619 | xnm = p; | |
1620 | #endif | |
570d7624 JB |
1621 | |
1622 | return make_string (xnm, x - xnm); | |
1623 | ||
1624 | badsubst: | |
1625 | error ("Bad format environment-variable substitution"); | |
1626 | missingclose: | |
1627 | error ("Missing \"}\" in environment-variable substitution"); | |
1628 | badvar: | |
1629 | error ("Substituting nonexistent environment variable \"%s\"", target); | |
1630 | ||
1631 | /* NOTREACHED */ | |
1632 | #endif /* not VMS */ | |
1633 | } | |
1634 | \f | |
067ffa38 | 1635 | /* A slightly faster and more convenient way to get |
298b760e | 1636 | (directory-file-name (expand-file-name FOO)). */ |
067ffa38 | 1637 | |
570d7624 JB |
1638 | Lisp_Object |
1639 | expand_and_dir_to_file (filename, defdir) | |
1640 | Lisp_Object filename, defdir; | |
1641 | { | |
1642 | register Lisp_Object abspath; | |
1643 | ||
1644 | abspath = Fexpand_file_name (filename, defdir); | |
1645 | #ifdef VMS | |
1646 | { | |
1647 | register int c = XSTRING (abspath)->data[XSTRING (abspath)->size - 1]; | |
1648 | if (c == ':' || c == ']' || c == '>') | |
1649 | abspath = Fdirectory_file_name (abspath); | |
1650 | } | |
1651 | #else | |
1652 | /* Remove final slash, if any (unless path is root). | |
1653 | stat behaves differently depending! */ | |
1654 | if (XSTRING (abspath)->size > 1 | |
1655 | && XSTRING (abspath)->data[XSTRING (abspath)->size - 1] == '/') | |
ddc61f46 RS |
1656 | /* We cannot take shortcuts; they might be wrong for magic file names. */ |
1657 | abspath = Fdirectory_file_name (abspath); | |
570d7624 JB |
1658 | #endif |
1659 | return abspath; | |
1660 | } | |
1661 | \f | |
1662 | barf_or_query_if_file_exists (absname, querystring, interactive) | |
1663 | Lisp_Object absname; | |
1664 | unsigned char *querystring; | |
1665 | int interactive; | |
1666 | { | |
1667 | register Lisp_Object tem; | |
1668 | struct gcpro gcpro1; | |
1669 | ||
1670 | if (access (XSTRING (absname)->data, 4) >= 0) | |
1671 | { | |
1672 | if (! interactive) | |
1673 | Fsignal (Qfile_already_exists, | |
1674 | Fcons (build_string ("File already exists"), | |
1675 | Fcons (absname, Qnil))); | |
1676 | GCPRO1 (absname); | |
1677 | tem = do_yes_or_no_p (format1 ("File %s already exists; %s anyway? ", | |
1678 | XSTRING (absname)->data, querystring)); | |
1679 | UNGCPRO; | |
265a9e55 | 1680 | if (NILP (tem)) |
570d7624 JB |
1681 | Fsignal (Qfile_already_exists, |
1682 | Fcons (build_string ("File already exists"), | |
1683 | Fcons (absname, Qnil))); | |
1684 | } | |
1685 | return; | |
1686 | } | |
1687 | ||
1688 | DEFUN ("copy-file", Fcopy_file, Scopy_file, 2, 4, | |
349a7710 | 1689 | "fCopy file: \nFCopy %s to file: \np\nP", |
570d7624 JB |
1690 | "Copy FILE to NEWNAME. Both args must be strings.\n\ |
1691 | Signals a `file-already-exists' error if file NEWNAME already exists,\n\ | |
1692 | unless a third argument OK-IF-ALREADY-EXISTS is supplied and non-nil.\n\ | |
1693 | A number as third arg means request confirmation if NEWNAME already exists.\n\ | |
1694 | This is what happens in interactive use with M-x.\n\ | |
349a7710 JB |
1695 | Fourth arg KEEP-TIME non-nil means give the new file the same\n\ |
1696 | last-modified time as the old one. (This works on only some systems.)\n\ | |
1697 | A prefix arg makes KEEP-TIME non-nil.") | |
570d7624 JB |
1698 | (filename, newname, ok_if_already_exists, keep_date) |
1699 | Lisp_Object filename, newname, ok_if_already_exists, keep_date; | |
1700 | { | |
1701 | int ifd, ofd, n; | |
1702 | char buf[16 * 1024]; | |
1703 | struct stat st; | |
32f4334d | 1704 | Lisp_Object handler; |
570d7624 | 1705 | struct gcpro gcpro1, gcpro2; |
b5148e85 | 1706 | int count = specpdl_ptr - specpdl; |
51cf6d37 | 1707 | Lisp_Object args[6]; |
f73b0ada | 1708 | int input_file_statable_p; |
570d7624 JB |
1709 | |
1710 | GCPRO2 (filename, newname); | |
1711 | CHECK_STRING (filename, 0); | |
1712 | CHECK_STRING (newname, 1); | |
1713 | filename = Fexpand_file_name (filename, Qnil); | |
1714 | newname = Fexpand_file_name (newname, Qnil); | |
32f4334d | 1715 | |
0bf2eed2 | 1716 | /* If the input file name has special constructs in it, |
32f4334d | 1717 | call the corresponding file handler. */ |
642ef245 | 1718 | handler = Ffind_file_name_handler (filename); |
0bf2eed2 | 1719 | /* Likewise for output file name. */ |
51cf6d37 RS |
1720 | if (NILP (handler)) |
1721 | handler = Ffind_file_name_handler (newname); | |
32f4334d | 1722 | if (!NILP (handler)) |
51cf6d37 RS |
1723 | return call5 (handler, Qcopy_file, filename, newname, |
1724 | ok_if_already_exists, keep_date); | |
32f4334d | 1725 | |
265a9e55 | 1726 | if (NILP (ok_if_already_exists) |
570d7624 JB |
1727 | || XTYPE (ok_if_already_exists) == Lisp_Int) |
1728 | barf_or_query_if_file_exists (newname, "copy to it", | |
1729 | XTYPE (ok_if_already_exists) == Lisp_Int); | |
1730 | ||
1731 | ifd = open (XSTRING (filename)->data, 0); | |
1732 | if (ifd < 0) | |
1733 | report_file_error ("Opening input file", Fcons (filename, Qnil)); | |
1734 | ||
b5148e85 RS |
1735 | record_unwind_protect (close_file_unwind, make_number (ifd)); |
1736 | ||
f73b0ada BF |
1737 | /* We can only copy regular files and symbolic links. Other files are not |
1738 | copyable by us. */ | |
1739 | input_file_statable_p = (fstat (ifd, &st) >= 0); | |
1740 | ||
1741 | #if defined (S_ISREG) && defined (S_ISLNK) | |
1742 | if (input_file_statable_p) | |
1743 | { | |
1744 | if (!(S_ISREG (st.st_mode)) && !(S_ISLNK (st.st_mode))) | |
1745 | { | |
1746 | #if defined (EISDIR) | |
1747 | /* Get a better looking error message. */ | |
1748 | errno = EISDIR; | |
1749 | #endif /* EISDIR */ | |
1750 | report_file_error ("Non-regular file", Fcons (filename, Qnil)); | |
1751 | } | |
1752 | } | |
1753 | #endif /* S_ISREG && S_ISLNK */ | |
1754 | ||
570d7624 JB |
1755 | #ifdef VMS |
1756 | /* Create the copy file with the same record format as the input file */ | |
1757 | ofd = sys_creat (XSTRING (newname)->data, 0666, ifd); | |
1758 | #else | |
4c3c22f3 RS |
1759 | #ifdef MSDOS |
1760 | /* System's default file type was set to binary by _fmode in emacs.c. */ | |
1761 | ofd = creat (XSTRING (newname)->data, S_IREAD | S_IWRITE); | |
1762 | #else /* not MSDOS */ | |
570d7624 | 1763 | ofd = creat (XSTRING (newname)->data, 0666); |
4c3c22f3 | 1764 | #endif /* not MSDOS */ |
570d7624 JB |
1765 | #endif /* VMS */ |
1766 | if (ofd < 0) | |
66331187 | 1767 | report_file_error ("Opening output file", Fcons (newname, Qnil)); |
b5148e85 RS |
1768 | |
1769 | record_unwind_protect (close_file_unwind, make_number (ofd)); | |
570d7624 | 1770 | |
b5148e85 RS |
1771 | immediate_quit = 1; |
1772 | QUIT; | |
570d7624 JB |
1773 | while ((n = read (ifd, buf, sizeof buf)) > 0) |
1774 | if (write (ofd, buf, n) != n) | |
66331187 | 1775 | report_file_error ("I/O error", Fcons (newname, Qnil)); |
b5148e85 | 1776 | immediate_quit = 0; |
570d7624 | 1777 | |
f73b0ada | 1778 | if (input_file_statable_p) |
570d7624 | 1779 | { |
265a9e55 | 1780 | if (!NILP (keep_date)) |
570d7624 | 1781 | { |
de5bf5d3 JB |
1782 | EMACS_TIME atime, mtime; |
1783 | EMACS_SET_SECS_USECS (atime, st.st_atime, 0); | |
1784 | EMACS_SET_SECS_USECS (mtime, st.st_mtime, 0); | |
1785 | EMACS_SET_UTIMES (XSTRING (newname)->data, atime, mtime); | |
570d7624 | 1786 | } |
570d7624 JB |
1787 | #ifdef APOLLO |
1788 | if (!egetenv ("USE_DOMAIN_ACLS")) | |
1789 | #endif | |
de5bf5d3 | 1790 | chmod (XSTRING (newname)->data, st.st_mode & 07777); |
570d7624 JB |
1791 | } |
1792 | ||
b5148e85 RS |
1793 | /* Discard the unwind protects. */ |
1794 | specpdl_ptr = specpdl + count; | |
1795 | ||
570d7624 JB |
1796 | close (ifd); |
1797 | if (close (ofd) < 0) | |
1798 | report_file_error ("I/O error", Fcons (newname, Qnil)); | |
1799 | ||
1800 | UNGCPRO; | |
1801 | return Qnil; | |
1802 | } | |
1803 | ||
9bbe01fb | 1804 | DEFUN ("make-directory-internal", Fmake_directory_internal, |
353cfc19 | 1805 | Smake_directory_internal, 1, 1, 0, |
570d7624 JB |
1806 | "Create a directory. One argument, a file name string.") |
1807 | (dirname) | |
1808 | Lisp_Object dirname; | |
1809 | { | |
1810 | unsigned char *dir; | |
32f4334d | 1811 | Lisp_Object handler; |
570d7624 JB |
1812 | |
1813 | CHECK_STRING (dirname, 0); | |
1814 | dirname = Fexpand_file_name (dirname, Qnil); | |
32f4334d | 1815 | |
642ef245 | 1816 | handler = Ffind_file_name_handler (dirname); |
32f4334d | 1817 | if (!NILP (handler)) |
9bbe01fb RS |
1818 | return call3 (handler, Qmake_directory, dirname, Qnil); |
1819 | ||
570d7624 JB |
1820 | dir = XSTRING (dirname)->data; |
1821 | ||
1822 | if (mkdir (dir, 0777) != 0) | |
1823 | report_file_error ("Creating directory", Flist (1, &dirname)); | |
1824 | ||
32f4334d | 1825 | return Qnil; |
570d7624 JB |
1826 | } |
1827 | ||
aa734e17 RS |
1828 | DEFUN ("delete-directory", Fdelete_directory, Sdelete_directory, 1, 1, "FDelete directory: ", |
1829 | "Delete a directory. One argument, a file name string.") | |
570d7624 JB |
1830 | (dirname) |
1831 | Lisp_Object dirname; | |
1832 | { | |
1833 | unsigned char *dir; | |
32f4334d | 1834 | Lisp_Object handler; |
570d7624 JB |
1835 | |
1836 | CHECK_STRING (dirname, 0); | |
1837 | dirname = Fexpand_file_name (dirname, Qnil); | |
1838 | dir = XSTRING (dirname)->data; | |
1839 | ||
642ef245 | 1840 | handler = Ffind_file_name_handler (dirname); |
32f4334d RS |
1841 | if (!NILP (handler)) |
1842 | return call2 (handler, Qdelete_directory, dirname); | |
1843 | ||
570d7624 JB |
1844 | if (rmdir (dir) != 0) |
1845 | report_file_error ("Removing directory", Flist (1, &dirname)); | |
1846 | ||
1847 | return Qnil; | |
1848 | } | |
1849 | ||
1850 | DEFUN ("delete-file", Fdelete_file, Sdelete_file, 1, 1, "fDelete file: ", | |
1851 | "Delete specified file. One argument, a file name string.\n\ | |
1852 | If file has multiple names, it continues to exist with the other names.") | |
1853 | (filename) | |
1854 | Lisp_Object filename; | |
1855 | { | |
32f4334d | 1856 | Lisp_Object handler; |
570d7624 JB |
1857 | CHECK_STRING (filename, 0); |
1858 | filename = Fexpand_file_name (filename, Qnil); | |
32f4334d | 1859 | |
642ef245 | 1860 | handler = Ffind_file_name_handler (filename); |
32f4334d RS |
1861 | if (!NILP (handler)) |
1862 | return call2 (handler, Qdelete_file, filename); | |
1863 | ||
570d7624 JB |
1864 | if (0 > unlink (XSTRING (filename)->data)) |
1865 | report_file_error ("Removing old name", Flist (1, &filename)); | |
1866 | return Qnil; | |
1867 | } | |
1868 | ||
1869 | DEFUN ("rename-file", Frename_file, Srename_file, 2, 3, | |
1870 | "fRename file: \nFRename %s to file: \np", | |
1871 | "Rename FILE as NEWNAME. Both args strings.\n\ | |
1872 | If file has names other than FILE, it continues to have those names.\n\ | |
1873 | Signals a `file-already-exists' error if a file NEWNAME already exists\n\ | |
1874 | unless optional third argument OK-IF-ALREADY-EXISTS is non-nil.\n\ | |
1875 | A number as third arg means request confirmation if NEWNAME already exists.\n\ | |
1876 | This is what happens in interactive use with M-x.") | |
1877 | (filename, newname, ok_if_already_exists) | |
1878 | Lisp_Object filename, newname, ok_if_already_exists; | |
1879 | { | |
1880 | #ifdef NO_ARG_ARRAY | |
1881 | Lisp_Object args[2]; | |
1882 | #endif | |
32f4334d | 1883 | Lisp_Object handler; |
570d7624 JB |
1884 | struct gcpro gcpro1, gcpro2; |
1885 | ||
1886 | GCPRO2 (filename, newname); | |
1887 | CHECK_STRING (filename, 0); | |
1888 | CHECK_STRING (newname, 1); | |
1889 | filename = Fexpand_file_name (filename, Qnil); | |
1890 | newname = Fexpand_file_name (newname, Qnil); | |
32f4334d RS |
1891 | |
1892 | /* If the file name has special constructs in it, | |
1893 | call the corresponding file handler. */ | |
642ef245 | 1894 | handler = Ffind_file_name_handler (filename); |
51cf6d37 RS |
1895 | if (NILP (handler)) |
1896 | handler = Ffind_file_name_handler (newname); | |
32f4334d | 1897 | if (!NILP (handler)) |
a5a44b91 JB |
1898 | return call4 (handler, Qrename_file, |
1899 | filename, newname, ok_if_already_exists); | |
32f4334d | 1900 | |
265a9e55 | 1901 | if (NILP (ok_if_already_exists) |
570d7624 JB |
1902 | || XTYPE (ok_if_already_exists) == Lisp_Int) |
1903 | barf_or_query_if_file_exists (newname, "rename to it", | |
1904 | XTYPE (ok_if_already_exists) == Lisp_Int); | |
1905 | #ifndef BSD4_1 | |
1906 | if (0 > rename (XSTRING (filename)->data, XSTRING (newname)->data)) | |
1907 | #else | |
1908 | if (0 > link (XSTRING (filename)->data, XSTRING (newname)->data) | |
1909 | || 0 > unlink (XSTRING (filename)->data)) | |
1910 | #endif | |
1911 | { | |
1912 | if (errno == EXDEV) | |
1913 | { | |
d093c3ac RM |
1914 | Fcopy_file (filename, newname, |
1915 | /* We have already prompted if it was an integer, | |
1916 | so don't have copy-file prompt again. */ | |
1917 | NILP (ok_if_already_exists) ? Qnil : Qt, Qt); | |
570d7624 JB |
1918 | Fdelete_file (filename); |
1919 | } | |
1920 | else | |
1921 | #ifdef NO_ARG_ARRAY | |
1922 | { | |
1923 | args[0] = filename; | |
1924 | args[1] = newname; | |
1925 | report_file_error ("Renaming", Flist (2, args)); | |
1926 | } | |
1927 | #else | |
1928 | report_file_error ("Renaming", Flist (2, &filename)); | |
1929 | #endif | |
1930 | } | |
1931 | UNGCPRO; | |
1932 | return Qnil; | |
1933 | } | |
1934 | ||
1935 | DEFUN ("add-name-to-file", Fadd_name_to_file, Sadd_name_to_file, 2, 3, | |
1936 | "fAdd name to file: \nFName to add to %s: \np", | |
1937 | "Give FILE additional name NEWNAME. Both args strings.\n\ | |
1938 | Signals a `file-already-exists' error if a file NEWNAME already exists\n\ | |
1939 | unless optional third argument OK-IF-ALREADY-EXISTS is non-nil.\n\ | |
1940 | A number as third arg means request confirmation if NEWNAME already exists.\n\ | |
1941 | This is what happens in interactive use with M-x.") | |
1942 | (filename, newname, ok_if_already_exists) | |
1943 | Lisp_Object filename, newname, ok_if_already_exists; | |
1944 | { | |
1945 | #ifdef NO_ARG_ARRAY | |
1946 | Lisp_Object args[2]; | |
1947 | #endif | |
32f4334d | 1948 | Lisp_Object handler; |
570d7624 JB |
1949 | struct gcpro gcpro1, gcpro2; |
1950 | ||
1951 | GCPRO2 (filename, newname); | |
1952 | CHECK_STRING (filename, 0); | |
1953 | CHECK_STRING (newname, 1); | |
1954 | filename = Fexpand_file_name (filename, Qnil); | |
1955 | newname = Fexpand_file_name (newname, Qnil); | |
32f4334d RS |
1956 | |
1957 | /* If the file name has special constructs in it, | |
1958 | call the corresponding file handler. */ | |
642ef245 | 1959 | handler = Ffind_file_name_handler (filename); |
32f4334d | 1960 | if (!NILP (handler)) |
51cf6d37 RS |
1961 | return call4 (handler, Qadd_name_to_file, filename, newname, |
1962 | ok_if_already_exists); | |
32f4334d | 1963 | |
265a9e55 | 1964 | if (NILP (ok_if_already_exists) |
570d7624 JB |
1965 | || XTYPE (ok_if_already_exists) == Lisp_Int) |
1966 | barf_or_query_if_file_exists (newname, "make it a new name", | |
1967 | XTYPE (ok_if_already_exists) == Lisp_Int); | |
1968 | unlink (XSTRING (newname)->data); | |
1969 | if (0 > link (XSTRING (filename)->data, XSTRING (newname)->data)) | |
1970 | { | |
1971 | #ifdef NO_ARG_ARRAY | |
1972 | args[0] = filename; | |
1973 | args[1] = newname; | |
1974 | report_file_error ("Adding new name", Flist (2, args)); | |
1975 | #else | |
1976 | report_file_error ("Adding new name", Flist (2, &filename)); | |
1977 | #endif | |
1978 | } | |
1979 | ||
1980 | UNGCPRO; | |
1981 | return Qnil; | |
1982 | } | |
1983 | ||
1984 | #ifdef S_IFLNK | |
1985 | DEFUN ("make-symbolic-link", Fmake_symbolic_link, Smake_symbolic_link, 2, 3, | |
1986 | "FMake symbolic link to file: \nFMake symbolic link to file %s: \np", | |
1987 | "Make a symbolic link to FILENAME, named LINKNAME. Both args strings.\n\ | |
1988 | Signals a `file-already-exists' error if a file NEWNAME already exists\n\ | |
1989 | unless optional third argument OK-IF-ALREADY-EXISTS is non-nil.\n\ | |
1990 | A number as third arg means request confirmation if NEWNAME already exists.\n\ | |
1991 | This happens for interactive use with M-x.") | |
e5d77022 JB |
1992 | (filename, linkname, ok_if_already_exists) |
1993 | Lisp_Object filename, linkname, ok_if_already_exists; | |
570d7624 JB |
1994 | { |
1995 | #ifdef NO_ARG_ARRAY | |
1996 | Lisp_Object args[2]; | |
1997 | #endif | |
32f4334d | 1998 | Lisp_Object handler; |
570d7624 JB |
1999 | struct gcpro gcpro1, gcpro2; |
2000 | ||
e5d77022 | 2001 | GCPRO2 (filename, linkname); |
570d7624 | 2002 | CHECK_STRING (filename, 0); |
e5d77022 | 2003 | CHECK_STRING (linkname, 1); |
d9bc1c99 RS |
2004 | /* If the link target has a ~, we must expand it to get |
2005 | a truly valid file name. Otherwise, do not expand; | |
2006 | we want to permit links to relative file names. */ | |
2007 | if (XSTRING (filename)->data[0] == '~') | |
2008 | filename = Fexpand_file_name (filename, Qnil); | |
e5d77022 | 2009 | linkname = Fexpand_file_name (linkname, Qnil); |
32f4334d RS |
2010 | |
2011 | /* If the file name has special constructs in it, | |
2012 | call the corresponding file handler. */ | |
642ef245 | 2013 | handler = Ffind_file_name_handler (filename); |
32f4334d | 2014 | if (!NILP (handler)) |
51cf6d37 RS |
2015 | return call4 (handler, Qmake_symbolic_link, filename, linkname, |
2016 | ok_if_already_exists); | |
32f4334d | 2017 | |
265a9e55 | 2018 | if (NILP (ok_if_already_exists) |
570d7624 | 2019 | || XTYPE (ok_if_already_exists) == Lisp_Int) |
e5d77022 | 2020 | barf_or_query_if_file_exists (linkname, "make it a link", |
570d7624 | 2021 | XTYPE (ok_if_already_exists) == Lisp_Int); |
e5d77022 | 2022 | if (0 > symlink (XSTRING (filename)->data, XSTRING (linkname)->data)) |
570d7624 JB |
2023 | { |
2024 | /* If we didn't complain already, silently delete existing file. */ | |
2025 | if (errno == EEXIST) | |
2026 | { | |
9083124b | 2027 | unlink (XSTRING (linkname)->data); |
e5d77022 | 2028 | if (0 <= symlink (XSTRING (filename)->data, XSTRING (linkname)->data)) |
570d7624 JB |
2029 | return Qnil; |
2030 | } | |
2031 | ||
2032 | #ifdef NO_ARG_ARRAY | |
2033 | args[0] = filename; | |
e5d77022 | 2034 | args[1] = linkname; |
570d7624 JB |
2035 | report_file_error ("Making symbolic link", Flist (2, args)); |
2036 | #else | |
2037 | report_file_error ("Making symbolic link", Flist (2, &filename)); | |
2038 | #endif | |
2039 | } | |
2040 | UNGCPRO; | |
2041 | return Qnil; | |
2042 | } | |
2043 | #endif /* S_IFLNK */ | |
2044 | ||
2045 | #ifdef VMS | |
2046 | ||
2047 | DEFUN ("define-logical-name", Fdefine_logical_name, Sdefine_logical_name, | |
2048 | 2, 2, "sDefine logical name: \nsDefine logical name %s as: ", | |
2049 | "Define the job-wide logical name NAME to have the value STRING.\n\ | |
2050 | If STRING is nil or a null string, the logical name NAME is deleted.") | |
2051 | (varname, string) | |
2052 | Lisp_Object varname; | |
2053 | Lisp_Object string; | |
2054 | { | |
2055 | CHECK_STRING (varname, 0); | |
265a9e55 | 2056 | if (NILP (string)) |
570d7624 JB |
2057 | delete_logical_name (XSTRING (varname)->data); |
2058 | else | |
2059 | { | |
2060 | CHECK_STRING (string, 1); | |
2061 | ||
2062 | if (XSTRING (string)->size == 0) | |
2063 | delete_logical_name (XSTRING (varname)->data); | |
2064 | else | |
2065 | define_logical_name (XSTRING (varname)->data, XSTRING (string)->data); | |
2066 | } | |
2067 | ||
2068 | return string; | |
2069 | } | |
2070 | #endif /* VMS */ | |
2071 | ||
2072 | #ifdef HPUX_NET | |
2073 | ||
2074 | DEFUN ("sysnetunam", Fsysnetunam, Ssysnetunam, 2, 2, 0, | |
2075 | "Open a network connection to PATH using LOGIN as the login string.") | |
2076 | (path, login) | |
2077 | Lisp_Object path, login; | |
2078 | { | |
2079 | int netresult; | |
2080 | ||
2081 | CHECK_STRING (path, 0); | |
2082 | CHECK_STRING (login, 0); | |
2083 | ||
2084 | netresult = netunam (XSTRING (path)->data, XSTRING (login)->data); | |
2085 | ||
2086 | if (netresult == -1) | |
2087 | return Qnil; | |
2088 | else | |
2089 | return Qt; | |
2090 | } | |
2091 | #endif /* HPUX_NET */ | |
2092 | \f | |
2093 | DEFUN ("file-name-absolute-p", Ffile_name_absolute_p, Sfile_name_absolute_p, | |
2094 | 1, 1, 0, | |
2095 | "Return t if file FILENAME specifies an absolute path name.\n\ | |
2096 | On Unix, this is a name starting with a `/' or a `~'.") | |
2097 | (filename) | |
2098 | Lisp_Object filename; | |
2099 | { | |
2100 | unsigned char *ptr; | |
2101 | ||
2102 | CHECK_STRING (filename, 0); | |
2103 | ptr = XSTRING (filename)->data; | |
2104 | if (*ptr == '/' || *ptr == '~' | |
2105 | #ifdef VMS | |
2106 | /* ??? This criterion is probably wrong for '<'. */ | |
2107 | || index (ptr, ':') || index (ptr, '<') | |
2108 | || (*ptr == '[' && (ptr[1] != '-' || (ptr[2] != '.' && ptr[2] != ']')) | |
2109 | && ptr[1] != '.') | |
2110 | #endif /* VMS */ | |
4c3c22f3 RS |
2111 | #ifdef MSDOS |
2112 | || (*ptr != 0 && ptr[1] == ':' && ptr[2] == '/') | |
2113 | #endif | |
570d7624 JB |
2114 | ) |
2115 | return Qt; | |
2116 | else | |
2117 | return Qnil; | |
2118 | } | |
2119 | ||
2120 | DEFUN ("file-exists-p", Ffile_exists_p, Sfile_exists_p, 1, 1, 0, | |
2121 | "Return t if file FILENAME exists. (This does not mean you can read it.)\n\ | |
2122 | See also `file-readable-p' and `file-attributes'.") | |
2123 | (filename) | |
2124 | Lisp_Object filename; | |
2125 | { | |
2126 | Lisp_Object abspath; | |
32f4334d | 2127 | Lisp_Object handler; |
570d7624 JB |
2128 | |
2129 | CHECK_STRING (filename, 0); | |
2130 | abspath = Fexpand_file_name (filename, Qnil); | |
32f4334d RS |
2131 | |
2132 | /* If the file name has special constructs in it, | |
2133 | call the corresponding file handler. */ | |
642ef245 | 2134 | handler = Ffind_file_name_handler (abspath); |
32f4334d | 2135 | if (!NILP (handler)) |
09121adc | 2136 | return call2 (handler, Qfile_exists_p, abspath); |
32f4334d | 2137 | |
570d7624 JB |
2138 | return (access (XSTRING (abspath)->data, 0) >= 0) ? Qt : Qnil; |
2139 | } | |
2140 | ||
2141 | DEFUN ("file-executable-p", Ffile_executable_p, Sfile_executable_p, 1, 1, 0, | |
2142 | "Return t if FILENAME can be executed by you.\n\ | |
8b235fde | 2143 | For a directory, this means you can access files in that directory.") |
570d7624 JB |
2144 | (filename) |
2145 | Lisp_Object filename; | |
2146 | ||
2147 | { | |
2148 | Lisp_Object abspath; | |
32f4334d | 2149 | Lisp_Object handler; |
570d7624 JB |
2150 | |
2151 | CHECK_STRING (filename, 0); | |
2152 | abspath = Fexpand_file_name (filename, Qnil); | |
32f4334d RS |
2153 | |
2154 | /* If the file name has special constructs in it, | |
2155 | call the corresponding file handler. */ | |
642ef245 | 2156 | handler = Ffind_file_name_handler (abspath); |
32f4334d | 2157 | if (!NILP (handler)) |
09121adc | 2158 | return call2 (handler, Qfile_executable_p, abspath); |
32f4334d | 2159 | |
570d7624 JB |
2160 | return (access (XSTRING (abspath)->data, 1) >= 0) ? Qt : Qnil; |
2161 | } | |
2162 | ||
2163 | DEFUN ("file-readable-p", Ffile_readable_p, Sfile_readable_p, 1, 1, 0, | |
2164 | "Return t if file FILENAME exists and you can read it.\n\ | |
2165 | See also `file-exists-p' and `file-attributes'.") | |
2166 | (filename) | |
2167 | Lisp_Object filename; | |
2168 | { | |
2169 | Lisp_Object abspath; | |
32f4334d | 2170 | Lisp_Object handler; |
570d7624 JB |
2171 | |
2172 | CHECK_STRING (filename, 0); | |
2173 | abspath = Fexpand_file_name (filename, Qnil); | |
32f4334d RS |
2174 | |
2175 | /* If the file name has special constructs in it, | |
2176 | call the corresponding file handler. */ | |
642ef245 | 2177 | handler = Ffind_file_name_handler (abspath); |
32f4334d | 2178 | if (!NILP (handler)) |
09121adc | 2179 | return call2 (handler, Qfile_readable_p, abspath); |
32f4334d | 2180 | |
570d7624 JB |
2181 | return (access (XSTRING (abspath)->data, 4) >= 0) ? Qt : Qnil; |
2182 | } | |
2183 | ||
2184 | DEFUN ("file-symlink-p", Ffile_symlink_p, Sfile_symlink_p, 1, 1, 0, | |
2185 | "If file FILENAME is the name of a symbolic link\n\ | |
2186 | returns the name of the file to which it is linked.\n\ | |
2187 | Otherwise returns NIL.") | |
2188 | (filename) | |
2189 | Lisp_Object filename; | |
2190 | { | |
2191 | #ifdef S_IFLNK | |
2192 | char *buf; | |
2193 | int bufsize; | |
2194 | int valsize; | |
2195 | Lisp_Object val; | |
32f4334d | 2196 | Lisp_Object handler; |
570d7624 JB |
2197 | |
2198 | CHECK_STRING (filename, 0); | |
2199 | filename = Fexpand_file_name (filename, Qnil); | |
2200 | ||
32f4334d RS |
2201 | /* If the file name has special constructs in it, |
2202 | call the corresponding file handler. */ | |
642ef245 | 2203 | handler = Ffind_file_name_handler (filename); |
32f4334d RS |
2204 | if (!NILP (handler)) |
2205 | return call2 (handler, Qfile_symlink_p, filename); | |
2206 | ||
570d7624 JB |
2207 | bufsize = 100; |
2208 | while (1) | |
2209 | { | |
2210 | buf = (char *) xmalloc (bufsize); | |
2211 | bzero (buf, bufsize); | |
2212 | valsize = readlink (XSTRING (filename)->data, buf, bufsize); | |
2213 | if (valsize < bufsize) break; | |
2214 | /* Buffer was not long enough */ | |
9ac0d9e0 | 2215 | xfree (buf); |
570d7624 JB |
2216 | bufsize *= 2; |
2217 | } | |
2218 | if (valsize == -1) | |
2219 | { | |
9ac0d9e0 | 2220 | xfree (buf); |
570d7624 JB |
2221 | return Qnil; |
2222 | } | |
2223 | val = make_string (buf, valsize); | |
9ac0d9e0 | 2224 | xfree (buf); |
570d7624 JB |
2225 | return val; |
2226 | #else /* not S_IFLNK */ | |
2227 | return Qnil; | |
2228 | #endif /* not S_IFLNK */ | |
2229 | } | |
2230 | ||
a253bab2 JB |
2231 | #ifdef SOLARIS_BROKEN_ACCESS |
2232 | /* In Solaris 2.1, the readonly-ness of the filesystem is not | |
2233 | considered by the access system call. This is Sun's bug, but we | |
2234 | still have to make Emacs work. */ | |
2235 | ||
2236 | #include <sys/statvfs.h> | |
2237 | ||
2238 | static int | |
2239 | ro_fsys (path) | |
2240 | char *path; | |
2241 | { | |
2242 | struct statvfs statvfsb; | |
2243 | ||
2244 | if (statvfs(path, &statvfsb)) | |
2245 | return 1; /* error from statvfs, be conservative and say not wrtable */ | |
2246 | else | |
2247 | /* Otherwise, fsys is ro if bit is set. */ | |
2248 | return statvfsb.f_flag & ST_RDONLY; | |
2249 | } | |
2250 | #else | |
2251 | /* But on every other os, access has already done the right thing. */ | |
2252 | #define ro_fsys(path) 0 | |
2253 | #endif | |
2254 | ||
570d7624 JB |
2255 | /* Having this before file-symlink-p mysteriously caused it to be forgotten |
2256 | on the RT/PC. */ | |
2257 | DEFUN ("file-writable-p", Ffile_writable_p, Sfile_writable_p, 1, 1, 0, | |
2258 | "Return t if file FILENAME can be written or created by you.") | |
2259 | (filename) | |
2260 | Lisp_Object filename; | |
2261 | { | |
2262 | Lisp_Object abspath, dir; | |
32f4334d | 2263 | Lisp_Object handler; |
570d7624 JB |
2264 | |
2265 | CHECK_STRING (filename, 0); | |
2266 | abspath = Fexpand_file_name (filename, Qnil); | |
32f4334d RS |
2267 | |
2268 | /* If the file name has special constructs in it, | |
2269 | call the corresponding file handler. */ | |
642ef245 | 2270 | handler = Ffind_file_name_handler (abspath); |
32f4334d | 2271 | if (!NILP (handler)) |
09121adc | 2272 | return call2 (handler, Qfile_writable_p, abspath); |
32f4334d | 2273 | |
570d7624 | 2274 | if (access (XSTRING (abspath)->data, 0) >= 0) |
a253bab2 | 2275 | return ((access (XSTRING (abspath)->data, 2) >= 0 |
e7c7295c | 2276 | && ! ro_fsys ((char *) XSTRING (abspath)->data)) |
a253bab2 | 2277 | ? Qt : Qnil); |
570d7624 JB |
2278 | dir = Ffile_name_directory (abspath); |
2279 | #ifdef VMS | |
265a9e55 | 2280 | if (!NILP (dir)) |
570d7624 JB |
2281 | dir = Fdirectory_file_name (dir); |
2282 | #endif /* VMS */ | |
4c3c22f3 RS |
2283 | #ifdef MSDOS |
2284 | if (!NILP (dir)) | |
2285 | dir = Fdirectory_file_name (dir); | |
2286 | #endif /* MSDOS */ | |
a253bab2 | 2287 | return ((access (!NILP (dir) ? (char *) XSTRING (dir)->data : "", 2) >= 0 |
e7c7295c | 2288 | && ! ro_fsys ((char *) XSTRING (dir)->data)) |
570d7624 JB |
2289 | ? Qt : Qnil); |
2290 | } | |
2291 | ||
2292 | DEFUN ("file-directory-p", Ffile_directory_p, Sfile_directory_p, 1, 1, 0, | |
2293 | "Return t if file FILENAME is the name of a directory as a file.\n\ | |
2294 | A directory name spec may be given instead; then the value is t\n\ | |
2295 | if the directory so specified exists and really is a directory.") | |
2296 | (filename) | |
2297 | Lisp_Object filename; | |
2298 | { | |
2299 | register Lisp_Object abspath; | |
2300 | struct stat st; | |
32f4334d | 2301 | Lisp_Object handler; |
570d7624 JB |
2302 | |
2303 | abspath = expand_and_dir_to_file (filename, current_buffer->directory); | |
2304 | ||
32f4334d RS |
2305 | /* If the file name has special constructs in it, |
2306 | call the corresponding file handler. */ | |
642ef245 | 2307 | handler = Ffind_file_name_handler (abspath); |
32f4334d | 2308 | if (!NILP (handler)) |
09121adc | 2309 | return call2 (handler, Qfile_directory_p, abspath); |
32f4334d | 2310 | |
570d7624 JB |
2311 | if (stat (XSTRING (abspath)->data, &st) < 0) |
2312 | return Qnil; | |
2313 | return (st.st_mode & S_IFMT) == S_IFDIR ? Qt : Qnil; | |
2314 | } | |
2315 | ||
b72dea2a JB |
2316 | DEFUN ("file-accessible-directory-p", Ffile_accessible_directory_p, Sfile_accessible_directory_p, 1, 1, 0, |
2317 | "Return t if file FILENAME is the name of a directory as a file,\n\ | |
2318 | and files in that directory can be opened by you. In order to use a\n\ | |
2319 | directory as a buffer's current directory, this predicate must return true.\n\ | |
2320 | A directory name spec may be given instead; then the value is t\n\ | |
2321 | if the directory so specified exists and really is a readable and\n\ | |
2322 | searchable directory.") | |
2323 | (filename) | |
2324 | Lisp_Object filename; | |
2325 | { | |
32f4334d RS |
2326 | Lisp_Object handler; |
2327 | ||
2328 | /* If the file name has special constructs in it, | |
2329 | call the corresponding file handler. */ | |
642ef245 | 2330 | handler = Ffind_file_name_handler (filename); |
32f4334d RS |
2331 | if (!NILP (handler)) |
2332 | return call2 (handler, Qfile_accessible_directory_p, filename); | |
2333 | ||
b72dea2a JB |
2334 | if (NILP (Ffile_directory_p (filename)) |
2335 | || NILP (Ffile_executable_p (filename))) | |
2336 | return Qnil; | |
2337 | else | |
2338 | return Qt; | |
2339 | } | |
2340 | ||
570d7624 JB |
2341 | DEFUN ("file-modes", Ffile_modes, Sfile_modes, 1, 1, 0, |
2342 | "Return mode bits of FILE, as an integer.") | |
2343 | (filename) | |
2344 | Lisp_Object filename; | |
2345 | { | |
2346 | Lisp_Object abspath; | |
2347 | struct stat st; | |
32f4334d | 2348 | Lisp_Object handler; |
570d7624 JB |
2349 | |
2350 | abspath = expand_and_dir_to_file (filename, current_buffer->directory); | |
2351 | ||
32f4334d RS |
2352 | /* If the file name has special constructs in it, |
2353 | call the corresponding file handler. */ | |
642ef245 | 2354 | handler = Ffind_file_name_handler (abspath); |
32f4334d | 2355 | if (!NILP (handler)) |
09121adc | 2356 | return call2 (handler, Qfile_modes, abspath); |
32f4334d | 2357 | |
570d7624 JB |
2358 | if (stat (XSTRING (abspath)->data, &st) < 0) |
2359 | return Qnil; | |
2360 | return make_number (st.st_mode & 07777); | |
2361 | } | |
2362 | ||
2363 | DEFUN ("set-file-modes", Fset_file_modes, Sset_file_modes, 2, 2, 0, | |
2364 | "Set mode bits of FILE to MODE (an integer).\n\ | |
2365 | Only the 12 low bits of MODE are used.") | |
2366 | (filename, mode) | |
2367 | Lisp_Object filename, mode; | |
2368 | { | |
2369 | Lisp_Object abspath; | |
32f4334d | 2370 | Lisp_Object handler; |
570d7624 JB |
2371 | |
2372 | abspath = Fexpand_file_name (filename, current_buffer->directory); | |
2373 | CHECK_NUMBER (mode, 1); | |
2374 | ||
32f4334d RS |
2375 | /* If the file name has special constructs in it, |
2376 | call the corresponding file handler. */ | |
642ef245 | 2377 | handler = Ffind_file_name_handler (abspath); |
32f4334d | 2378 | if (!NILP (handler)) |
09121adc | 2379 | return call3 (handler, Qset_file_modes, abspath, mode); |
32f4334d | 2380 | |
570d7624 JB |
2381 | #ifndef APOLLO |
2382 | if (chmod (XSTRING (abspath)->data, XINT (mode)) < 0) | |
2383 | report_file_error ("Doing chmod", Fcons (abspath, Qnil)); | |
2384 | #else /* APOLLO */ | |
2385 | if (!egetenv ("USE_DOMAIN_ACLS")) | |
2386 | { | |
2387 | struct stat st; | |
2388 | struct timeval tvp[2]; | |
2389 | ||
2390 | /* chmod on apollo also change the file's modtime; need to save the | |
2391 | modtime and then restore it. */ | |
2392 | if (stat (XSTRING (abspath)->data, &st) < 0) | |
2393 | { | |
2394 | report_file_error ("Doing chmod", Fcons (abspath, Qnil)); | |
2395 | return (Qnil); | |
2396 | } | |
2397 | ||
2398 | if (chmod (XSTRING (abspath)->data, XINT (mode)) < 0) | |
2399 | report_file_error ("Doing chmod", Fcons (abspath, Qnil)); | |
2400 | ||
2401 | /* reset the old accessed and modified times. */ | |
2402 | tvp[0].tv_sec = st.st_atime + 1; /* +1 due to an Apollo roundoff bug */ | |
2403 | tvp[0].tv_usec = 0; | |
2404 | tvp[1].tv_sec = st.st_mtime + 1; /* +1 due to an Apollo roundoff bug */ | |
2405 | tvp[1].tv_usec = 0; | |
2406 | ||
2407 | if (utimes (XSTRING (abspath)->data, tvp) < 0) | |
2408 | report_file_error ("Doing utimes", Fcons (abspath, Qnil)); | |
2409 | } | |
2410 | #endif /* APOLLO */ | |
2411 | ||
2412 | return Qnil; | |
2413 | } | |
2414 | ||
c24e9a53 | 2415 | DEFUN ("set-default-file-modes", Fset_default_file_modes, Sset_default_file_modes, 1, 1, 0, |
5f85ea58 RS |
2416 | "Set the file permission bits for newly created files.\n\ |
2417 | The argument MODE should be an integer; only the low 9 bits are used.\n\ | |
36a8c287 | 2418 | This setting is inherited by subprocesses.") |
5f85ea58 RS |
2419 | (mode) |
2420 | Lisp_Object mode; | |
36a8c287 | 2421 | { |
5f85ea58 | 2422 | CHECK_NUMBER (mode, 0); |
36a8c287 | 2423 | |
5f85ea58 | 2424 | umask ((~ XINT (mode)) & 0777); |
36a8c287 JB |
2425 | |
2426 | return Qnil; | |
2427 | } | |
2428 | ||
c24e9a53 | 2429 | DEFUN ("default-file-modes", Fdefault_file_modes, Sdefault_file_modes, 0, 0, 0, |
5f85ea58 RS |
2430 | "Return the default file protection for created files.\n\ |
2431 | The value is an integer.") | |
36a8c287 JB |
2432 | () |
2433 | { | |
5f85ea58 RS |
2434 | int realmask; |
2435 | Lisp_Object value; | |
36a8c287 | 2436 | |
5f85ea58 RS |
2437 | realmask = umask (0); |
2438 | umask (realmask); | |
36a8c287 | 2439 | |
5f85ea58 RS |
2440 | XSET (value, Lisp_Int, (~ realmask) & 0777); |
2441 | return value; | |
36a8c287 JB |
2442 | } |
2443 | ||
85ffea93 RS |
2444 | #ifdef unix |
2445 | ||
2446 | DEFUN ("unix-sync", Funix_sync, Sunix_sync, 0, 0, "", | |
2447 | "Tell Unix to finish all pending disk updates.") | |
2448 | () | |
2449 | { | |
2450 | sync (); | |
2451 | return Qnil; | |
2452 | } | |
2453 | ||
2454 | #endif /* unix */ | |
2455 | ||
570d7624 JB |
2456 | DEFUN ("file-newer-than-file-p", Ffile_newer_than_file_p, Sfile_newer_than_file_p, 2, 2, 0, |
2457 | "Return t if file FILE1 is newer than file FILE2.\n\ | |
2458 | If FILE1 does not exist, the answer is nil;\n\ | |
2459 | otherwise, if FILE2 does not exist, the answer is t.") | |
2460 | (file1, file2) | |
2461 | Lisp_Object file1, file2; | |
2462 | { | |
32f4334d | 2463 | Lisp_Object abspath1, abspath2; |
570d7624 JB |
2464 | struct stat st; |
2465 | int mtime1; | |
32f4334d | 2466 | Lisp_Object handler; |
09121adc | 2467 | struct gcpro gcpro1, gcpro2; |
570d7624 JB |
2468 | |
2469 | CHECK_STRING (file1, 0); | |
2470 | CHECK_STRING (file2, 0); | |
2471 | ||
09121adc RS |
2472 | abspath1 = Qnil; |
2473 | GCPRO2 (abspath1, file2); | |
32f4334d RS |
2474 | abspath1 = expand_and_dir_to_file (file1, current_buffer->directory); |
2475 | abspath2 = expand_and_dir_to_file (file2, current_buffer->directory); | |
09121adc | 2476 | UNGCPRO; |
570d7624 | 2477 | |
32f4334d RS |
2478 | /* If the file name has special constructs in it, |
2479 | call the corresponding file handler. */ | |
642ef245 | 2480 | handler = Ffind_file_name_handler (abspath1); |
51cf6d37 RS |
2481 | if (NILP (handler)) |
2482 | handler = Ffind_file_name_handler (abspath2); | |
32f4334d RS |
2483 | if (!NILP (handler)) |
2484 | return call3 (handler, Qfile_newer_than_file_p, abspath1, abspath2); | |
2485 | ||
2486 | if (stat (XSTRING (abspath1)->data, &st) < 0) | |
570d7624 JB |
2487 | return Qnil; |
2488 | ||
2489 | mtime1 = st.st_mtime; | |
2490 | ||
32f4334d | 2491 | if (stat (XSTRING (abspath2)->data, &st) < 0) |
570d7624 JB |
2492 | return Qt; |
2493 | ||
2494 | return (mtime1 > st.st_mtime) ? Qt : Qnil; | |
2495 | } | |
2496 | \f | |
4c3c22f3 RS |
2497 | #ifdef MSDOS |
2498 | Lisp_Object Qfind_buffer_file_type; | |
2499 | #endif | |
2500 | ||
570d7624 | 2501 | DEFUN ("insert-file-contents", Finsert_file_contents, Sinsert_file_contents, |
7fded690 | 2502 | 1, 4, 0, |
570d7624 | 2503 | "Insert contents of file FILENAME after point.\n\ |
7fded690 | 2504 | Returns list of absolute file name and length of data inserted.\n\ |
570d7624 JB |
2505 | If second argument VISIT is non-nil, the buffer's visited filename\n\ |
2506 | and last save file modtime are set, and it is marked unmodified.\n\ | |
2507 | If visiting and the file does not exist, visiting is completed\n\ | |
7fded690 JB |
2508 | before the error is signaled.\n\n\ |
2509 | The optional third and fourth arguments BEG and END\n\ | |
2510 | specify what portion of the file to insert.\n\ | |
2511 | If VISIT is non-nil, BEG and END must be nil.") | |
2512 | (filename, visit, beg, end) | |
2513 | Lisp_Object filename, visit, beg, end; | |
570d7624 JB |
2514 | { |
2515 | struct stat st; | |
2516 | register int fd; | |
2517 | register int inserted = 0; | |
2518 | register int how_much; | |
2519 | int count = specpdl_ptr - specpdl; | |
d6a3cc15 RS |
2520 | struct gcpro gcpro1, gcpro2; |
2521 | Lisp_Object handler, val, insval; | |
2522 | Lisp_Object p; | |
7fded690 | 2523 | int total; |
32f4334d RS |
2524 | |
2525 | val = Qnil; | |
d6a3cc15 | 2526 | p = Qnil; |
32f4334d | 2527 | |
d6a3cc15 | 2528 | GCPRO2 (filename, p); |
265a9e55 | 2529 | if (!NILP (current_buffer->read_only)) |
570d7624 JB |
2530 | Fbarf_if_buffer_read_only(); |
2531 | ||
2532 | CHECK_STRING (filename, 0); | |
2533 | filename = Fexpand_file_name (filename, Qnil); | |
2534 | ||
32f4334d RS |
2535 | /* If the file name has special constructs in it, |
2536 | call the corresponding file handler. */ | |
642ef245 | 2537 | handler = Ffind_file_name_handler (filename); |
32f4334d RS |
2538 | if (!NILP (handler)) |
2539 | { | |
7fded690 | 2540 | val = call5 (handler, Qinsert_file_contents, filename, visit, beg, end); |
32f4334d RS |
2541 | goto handled; |
2542 | } | |
2543 | ||
570d7624 JB |
2544 | fd = -1; |
2545 | ||
2546 | #ifndef APOLLO | |
2547 | if (stat (XSTRING (filename)->data, &st) < 0 | |
349a7710 | 2548 | || (fd = open (XSTRING (filename)->data, 0)) < 0) |
570d7624 JB |
2549 | #else |
2550 | if ((fd = open (XSTRING (filename)->data, 0)) < 0 | |
2551 | || fstat (fd, &st) < 0) | |
2552 | #endif /* not APOLLO */ | |
2553 | { | |
2554 | if (fd >= 0) close (fd); | |
265a9e55 | 2555 | if (NILP (visit)) |
570d7624 JB |
2556 | report_file_error ("Opening input file", Fcons (filename, Qnil)); |
2557 | st.st_mtime = -1; | |
2558 | how_much = 0; | |
2559 | goto notfound; | |
2560 | } | |
2561 | ||
2562 | record_unwind_protect (close_file_unwind, make_number (fd)); | |
2563 | ||
be53b411 JB |
2564 | #ifdef S_IFSOCK |
2565 | /* This code will need to be changed in order to work on named | |
2566 | pipes, and it's probably just not worth it. So we should at | |
2567 | least signal an error. */ | |
2568 | if ((st.st_mode & S_IFMT) == S_IFSOCK) | |
2569 | Fsignal (Qfile_error, | |
2570 | Fcons (build_string ("reading from named pipe"), | |
2571 | Fcons (filename, Qnil))); | |
2572 | #endif | |
2573 | ||
570d7624 JB |
2574 | /* Supposedly happens on VMS. */ |
2575 | if (st.st_size < 0) | |
2576 | error ("File size is negative"); | |
be53b411 | 2577 | |
7fded690 JB |
2578 | if (!NILP (beg) || !NILP (end)) |
2579 | if (!NILP (visit)) | |
2580 | error ("Attempt to visit less than an entire file"); | |
2581 | ||
2582 | if (!NILP (beg)) | |
2583 | CHECK_NUMBER (beg, 0); | |
2584 | else | |
2585 | XFASTINT (beg) = 0; | |
2586 | ||
2587 | if (!NILP (end)) | |
2588 | CHECK_NUMBER (end, 0); | |
2589 | else | |
2590 | { | |
2591 | XSETINT (end, st.st_size); | |
2592 | if (XINT (end) != st.st_size) | |
2593 | error ("maximum buffer size exceeded"); | |
2594 | } | |
2595 | ||
2596 | total = XINT (end) - XINT (beg); | |
2597 | ||
570d7624 JB |
2598 | { |
2599 | register Lisp_Object temp; | |
2600 | ||
2601 | /* Make sure point-max won't overflow after this insertion. */ | |
7fded690 JB |
2602 | XSET (temp, Lisp_Int, total); |
2603 | if (total != XINT (temp)) | |
570d7624 JB |
2604 | error ("maximum buffer size exceeded"); |
2605 | } | |
2606 | ||
57d8d468 | 2607 | if (NILP (visit) && total > 0) |
570d7624 JB |
2608 | prepare_to_modify_buffer (point, point); |
2609 | ||
2610 | move_gap (point); | |
7fded690 JB |
2611 | if (GAP_SIZE < total) |
2612 | make_gap (total - GAP_SIZE); | |
2613 | ||
2614 | if (XINT (beg) != 0) | |
2615 | { | |
2616 | if (lseek (fd, XINT (beg), 0) < 0) | |
2617 | report_file_error ("Setting file position", Fcons (filename, Qnil)); | |
2618 | } | |
2619 | ||
570d7624 JB |
2620 | while (1) |
2621 | { | |
7fded690 | 2622 | int try = min (total - inserted, 64 << 10); |
b5148e85 RS |
2623 | int this; |
2624 | ||
2625 | /* Allow quitting out of the actual I/O. */ | |
2626 | immediate_quit = 1; | |
2627 | QUIT; | |
2628 | this = read (fd, &FETCH_CHAR (point + inserted - 1) + 1, try); | |
2629 | immediate_quit = 0; | |
570d7624 JB |
2630 | |
2631 | if (this <= 0) | |
2632 | { | |
2633 | how_much = this; | |
2634 | break; | |
2635 | } | |
2636 | ||
2637 | GPT += this; | |
2638 | GAP_SIZE -= this; | |
2639 | ZV += this; | |
2640 | Z += this; | |
2641 | inserted += this; | |
2642 | } | |
2643 | ||
4c3c22f3 RS |
2644 | #ifdef MSDOS |
2645 | /* Demacs 1.1.1 91/10/16 HIRANO Satoshi, MW July 1993 */ | |
2646 | /* Determine file type from name and remove LFs from CR-LFs if the file | |
2647 | is deemed to be a text file. */ | |
2648 | { | |
2649 | struct gcpro gcpro1; | |
2650 | Lisp_Object code = Qnil; | |
2651 | GCPRO1 (filename); | |
2652 | code = call1 (Qfind_buffer_file_type, filename); | |
2653 | UNGCPRO; | |
2654 | if (XTYPE (code) == Lisp_Int) | |
2655 | XFASTINT (current_buffer->buffer_file_type) = XFASTINT (code); | |
2656 | if (XFASTINT (current_buffer->buffer_file_type) == 0) | |
2657 | { | |
2658 | int reduced_size = | |
2659 | inserted - crlf_to_lf (inserted, &FETCH_CHAR (point - 1) + 1); | |
2660 | ZV -= reduced_size; | |
2661 | Z -= reduced_size; | |
2662 | GPT -= reduced_size; | |
2663 | GAP_SIZE += reduced_size; | |
2664 | inserted -= reduced_size; | |
2665 | } | |
2666 | } | |
2667 | #endif | |
2668 | ||
570d7624 | 2669 | if (inserted > 0) |
7d8451f1 RS |
2670 | { |
2671 | record_insert (point, inserted); | |
8d4e077b JA |
2672 | |
2673 | /* Only defined if Emacs is compiled with USE_TEXT_PROPERTIES */ | |
2674 | offset_intervals (current_buffer, point, inserted); | |
7d8451f1 RS |
2675 | MODIFF++; |
2676 | } | |
570d7624 JB |
2677 | |
2678 | close (fd); | |
2679 | ||
2680 | /* Discard the unwind protect */ | |
2681 | specpdl_ptr = specpdl + count; | |
2682 | ||
2683 | if (how_much < 0) | |
2684 | error ("IO error reading %s: %s", | |
ce97267f | 2685 | XSTRING (filename)->data, strerror (errno)); |
570d7624 JB |
2686 | |
2687 | notfound: | |
32f4334d | 2688 | handled: |
570d7624 | 2689 | |
265a9e55 | 2690 | if (!NILP (visit)) |
570d7624 JB |
2691 | { |
2692 | current_buffer->undo_list = Qnil; | |
2693 | #ifdef APOLLO | |
2694 | stat (XSTRING (filename)->data, &st); | |
2695 | #endif | |
62bcf009 | 2696 | |
a7e82472 RS |
2697 | if (NILP (handler)) |
2698 | { | |
2699 | current_buffer->modtime = st.st_mtime; | |
2700 | current_buffer->filename = filename; | |
2701 | } | |
62bcf009 | 2702 | |
570d7624 JB |
2703 | current_buffer->save_modified = MODIFF; |
2704 | current_buffer->auto_save_modified = MODIFF; | |
2705 | XFASTINT (current_buffer->save_length) = Z - BEG; | |
2706 | #ifdef CLASH_DETECTION | |
32f4334d RS |
2707 | if (NILP (handler)) |
2708 | { | |
2709 | if (!NILP (current_buffer->filename)) | |
2710 | unlock_file (current_buffer->filename); | |
2711 | unlock_file (filename); | |
2712 | } | |
570d7624 | 2713 | #endif /* CLASH_DETECTION */ |
570d7624 | 2714 | /* If visiting nonexistent file, return nil. */ |
32f4334d | 2715 | if (current_buffer->modtime == -1) |
570d7624 JB |
2716 | report_file_error ("Opening input file", Fcons (filename, Qnil)); |
2717 | } | |
2718 | ||
62bcf009 | 2719 | if (inserted > 0 && NILP (visit) && total > 0) |
d2cad97d | 2720 | signal_after_change (point, 0, inserted); |
570d7624 | 2721 | |
d6a3cc15 RS |
2722 | if (inserted > 0) |
2723 | { | |
2724 | p = Vafter_insert_file_functions; | |
2725 | while (!NILP (p)) | |
2726 | { | |
2727 | insval = call1 (Fcar (p), make_number (inserted)); | |
2728 | if (!NILP (insval)) | |
2729 | { | |
2730 | CHECK_NUMBER (insval, 0); | |
2731 | inserted = XFASTINT (insval); | |
2732 | } | |
2733 | QUIT; | |
2734 | p = Fcdr (p); | |
2735 | } | |
2736 | } | |
2737 | ||
32f4334d RS |
2738 | if (!NILP (val)) |
2739 | RETURN_UNGCPRO (val); | |
9b7828a5 JB |
2740 | RETURN_UNGCPRO (Fcons (filename, |
2741 | Fcons (make_number (inserted), | |
2742 | Qnil))); | |
570d7624 | 2743 | } |
7fded690 | 2744 | \f |
d6a3cc15 RS |
2745 | static Lisp_Object build_annotations (); |
2746 | ||
570d7624 JB |
2747 | DEFUN ("write-region", Fwrite_region, Swrite_region, 3, 5, |
2748 | "r\nFWrite region to file: ", | |
2749 | "Write current region into specified file.\n\ | |
2750 | When called from a program, takes three arguments:\n\ | |
2751 | START, END and FILENAME. START and END are buffer positions.\n\ | |
2752 | Optional fourth argument APPEND if non-nil means\n\ | |
2753 | append to existing file contents (if any).\n\ | |
2754 | Optional fifth argument VISIT if t means\n\ | |
2755 | set the last-save-file-modtime of buffer to this file's modtime\n\ | |
2756 | and mark buffer not modified.\n\ | |
3b7792ed RS |
2757 | If VISIT is a string, it is a second file name;\n\ |
2758 | the output goes to FILENAME, but the buffer is marked as visiting VISIT.\n\ | |
2759 | VISIT is also the file name to lock and unlock for clash detection.\n\ | |
1d386d28 RS |
2760 | If VISIT is neither t nor nil nor a string,\n\ |
2761 | that means do not print the \"Wrote file\" message.\n\ | |
570d7624 JB |
2762 | Kludgy feature: if START is a string, then that string is written\n\ |
2763 | to the file, instead of any buffer contents, and END is ignored.") | |
2764 | (start, end, filename, append, visit) | |
2765 | Lisp_Object start, end, filename, append, visit; | |
2766 | { | |
2767 | register int desc; | |
2768 | int failure; | |
2769 | int save_errno; | |
2770 | unsigned char *fn; | |
2771 | struct stat st; | |
c975dd7a | 2772 | int tem; |
570d7624 JB |
2773 | int count = specpdl_ptr - specpdl; |
2774 | #ifdef VMS | |
2775 | unsigned char *fname = 0; /* If non-0, original filename (must rename) */ | |
2776 | #endif /* VMS */ | |
3eac9910 | 2777 | Lisp_Object handler; |
4ad827c5 | 2778 | Lisp_Object visit_file; |
d6a3cc15 RS |
2779 | Lisp_Object annotations; |
2780 | int visiting, quietly; | |
3b7792ed | 2781 | struct gcpro gcpro1, gcpro2, gcpro3, gcpro4; |
4c3c22f3 RS |
2782 | #ifdef MSDOS |
2783 | int buffer_file_type | |
2784 | = NILP (current_buffer->buffer_file_type) ? O_TEXT : O_BINARY; | |
2785 | #endif | |
570d7624 | 2786 | |
561cb8e1 | 2787 | if (!NILP (start) && !STRINGP (start)) |
570d7624 JB |
2788 | validate_region (&start, &end); |
2789 | ||
2790 | filename = Fexpand_file_name (filename, Qnil); | |
561cb8e1 | 2791 | if (STRINGP (visit)) |
e5176bae | 2792 | visit_file = Fexpand_file_name (visit, Qnil); |
4ad827c5 RS |
2793 | else |
2794 | visit_file = filename; | |
2795 | ||
561cb8e1 | 2796 | visiting = (EQ (visit, Qt) || STRINGP (visit)); |
d6a3cc15 RS |
2797 | quietly = !NILP (visit); |
2798 | ||
2799 | annotations = Qnil; | |
2800 | ||
2801 | GCPRO4 (start, filename, annotations, visit_file); | |
570d7624 | 2802 | |
32f4334d RS |
2803 | /* If the file name has special constructs in it, |
2804 | call the corresponding file handler. */ | |
642ef245 | 2805 | handler = Ffind_file_name_handler (filename); |
3eac9910 | 2806 | |
32f4334d RS |
2807 | if (!NILP (handler)) |
2808 | { | |
32f4334d | 2809 | Lisp_Object val; |
51cf6d37 RS |
2810 | val = call6 (handler, Qwrite_region, start, end, |
2811 | filename, append, visit); | |
32f4334d | 2812 | |
d6a3cc15 | 2813 | if (visiting) |
32f4334d | 2814 | { |
32f4334d RS |
2815 | current_buffer->save_modified = MODIFF; |
2816 | XFASTINT (current_buffer->save_length) = Z - BEG; | |
3b7792ed | 2817 | current_buffer->filename = visit_file; |
32f4334d | 2818 | } |
09121adc | 2819 | UNGCPRO; |
32f4334d RS |
2820 | return val; |
2821 | } | |
2822 | ||
561cb8e1 RS |
2823 | /* Special kludge to simplify auto-saving. */ |
2824 | if (NILP (start)) | |
2825 | { | |
2826 | XFASTINT (start) = BEG; | |
2827 | XFASTINT (end) = Z; | |
2828 | } | |
2829 | ||
d6a3cc15 RS |
2830 | annotations = build_annotations (start, end); |
2831 | ||
570d7624 JB |
2832 | #ifdef CLASH_DETECTION |
2833 | if (!auto_saving) | |
3b7792ed | 2834 | lock_file (visit_file); |
570d7624 JB |
2835 | #endif /* CLASH_DETECTION */ |
2836 | ||
09121adc | 2837 | fn = XSTRING (filename)->data; |
570d7624 | 2838 | desc = -1; |
265a9e55 | 2839 | if (!NILP (append)) |
4c3c22f3 RS |
2840 | #ifdef MSDOS |
2841 | desc = open (fn, O_WRONLY | buffer_file_type); | |
2842 | #else | |
570d7624 | 2843 | desc = open (fn, O_WRONLY); |
4c3c22f3 | 2844 | #endif |
570d7624 JB |
2845 | |
2846 | if (desc < 0) | |
2847 | #ifdef VMS | |
2848 | if (auto_saving) /* Overwrite any previous version of autosave file */ | |
2849 | { | |
2850 | vms_truncate (fn); /* if fn exists, truncate to zero length */ | |
2851 | desc = open (fn, O_RDWR); | |
2852 | if (desc < 0) | |
561cb8e1 | 2853 | desc = creat_copy_attrs (STRINGP (current_buffer->filename) |
b72dea2a JB |
2854 | ? XSTRING (current_buffer->filename)->data : 0, |
2855 | fn); | |
570d7624 JB |
2856 | } |
2857 | else /* Write to temporary name and rename if no errors */ | |
2858 | { | |
2859 | Lisp_Object temp_name; | |
2860 | temp_name = Ffile_name_directory (filename); | |
2861 | ||
265a9e55 | 2862 | if (!NILP (temp_name)) |
570d7624 JB |
2863 | { |
2864 | temp_name = Fmake_temp_name (concat2 (temp_name, | |
2865 | build_string ("$$SAVE$$"))); | |
2866 | fname = XSTRING (filename)->data; | |
2867 | fn = XSTRING (temp_name)->data; | |
2868 | desc = creat_copy_attrs (fname, fn); | |
2869 | if (desc < 0) | |
2870 | { | |
2871 | /* If we can't open the temporary file, try creating a new | |
2872 | version of the original file. VMS "creat" creates a | |
2873 | new version rather than truncating an existing file. */ | |
2874 | fn = fname; | |
2875 | fname = 0; | |
2876 | desc = creat (fn, 0666); | |
2877 | #if 0 /* This can clobber an existing file and fail to replace it, | |
2878 | if the user runs out of space. */ | |
2879 | if (desc < 0) | |
2880 | { | |
2881 | /* We can't make a new version; | |
2882 | try to truncate and rewrite existing version if any. */ | |
2883 | vms_truncate (fn); | |
2884 | desc = open (fn, O_RDWR); | |
2885 | } | |
2886 | #endif | |
2887 | } | |
2888 | } | |
2889 | else | |
2890 | desc = creat (fn, 0666); | |
2891 | } | |
2892 | #else /* not VMS */ | |
4c3c22f3 RS |
2893 | #ifdef MSDOS |
2894 | desc = open (fn, | |
2895 | O_WRONLY | O_TRUNC | O_CREAT | buffer_file_type, | |
2896 | S_IREAD | S_IWRITE); | |
2897 | #else /* not MSDOS */ | |
570d7624 | 2898 | desc = creat (fn, auto_saving ? auto_save_mode_bits : 0666); |
4c3c22f3 | 2899 | #endif /* not MSDOS */ |
570d7624 JB |
2900 | #endif /* not VMS */ |
2901 | ||
09121adc RS |
2902 | UNGCPRO; |
2903 | ||
570d7624 JB |
2904 | if (desc < 0) |
2905 | { | |
2906 | #ifdef CLASH_DETECTION | |
2907 | save_errno = errno; | |
3b7792ed | 2908 | if (!auto_saving) unlock_file (visit_file); |
570d7624 JB |
2909 | errno = save_errno; |
2910 | #endif /* CLASH_DETECTION */ | |
2911 | report_file_error ("Opening output file", Fcons (filename, Qnil)); | |
2912 | } | |
2913 | ||
2914 | record_unwind_protect (close_file_unwind, make_number (desc)); | |
2915 | ||
265a9e55 | 2916 | if (!NILP (append)) |
570d7624 JB |
2917 | if (lseek (desc, 0, 2) < 0) |
2918 | { | |
2919 | #ifdef CLASH_DETECTION | |
3b7792ed | 2920 | if (!auto_saving) unlock_file (visit_file); |
570d7624 JB |
2921 | #endif /* CLASH_DETECTION */ |
2922 | report_file_error ("Lseek error", Fcons (filename, Qnil)); | |
2923 | } | |
2924 | ||
2925 | #ifdef VMS | |
2926 | /* | |
2927 | * Kludge Warning: The VMS C RTL likes to insert carriage returns | |
2928 | * if we do writes that don't end with a carriage return. Furthermore | |
2929 | * it cannot handle writes of more then 16K. The modified | |
2930 | * version of "sys_write" in SYSDEP.C (see comment there) copes with | |
2931 | * this EXCEPT for the last record (iff it doesn't end with a carriage | |
2932 | * return). This implies that if your buffer doesn't end with a carriage | |
2933 | * return, you get one free... tough. However it also means that if | |
2934 | * we make two calls to sys_write (a la the following code) you can | |
2935 | * get one at the gap as well. The easiest way to fix this (honest) | |
2936 | * is to move the gap to the next newline (or the end of the buffer). | |
2937 | * Thus this change. | |
2938 | * | |
2939 | * Yech! | |
2940 | */ | |
2941 | if (GPT > BEG && GPT_ADDR[-1] != '\n') | |
2942 | move_gap (find_next_newline (GPT, 1)); | |
2943 | #endif | |
2944 | ||
2945 | failure = 0; | |
2946 | immediate_quit = 1; | |
2947 | ||
561cb8e1 | 2948 | if (STRINGP (start)) |
570d7624 | 2949 | { |
d6a3cc15 RS |
2950 | failure = 0 > a_write (desc, XSTRING (start)->data, |
2951 | XSTRING (start)->size, 0, &annotations); | |
570d7624 JB |
2952 | save_errno = errno; |
2953 | } | |
2954 | else if (XINT (start) != XINT (end)) | |
2955 | { | |
c975dd7a | 2956 | int nwritten = 0; |
570d7624 JB |
2957 | if (XINT (start) < GPT) |
2958 | { | |
2959 | register int end1 = XINT (end); | |
2960 | tem = XINT (start); | |
d6a3cc15 | 2961 | failure = 0 > a_write (desc, &FETCH_CHAR (tem), |
c975dd7a RS |
2962 | min (GPT, end1) - tem, tem, &annotations); |
2963 | nwritten += min (GPT, end1) - tem; | |
570d7624 JB |
2964 | save_errno = errno; |
2965 | } | |
2966 | ||
2967 | if (XINT (end) > GPT && !failure) | |
2968 | { | |
2969 | tem = XINT (start); | |
2970 | tem = max (tem, GPT); | |
d6a3cc15 | 2971 | failure = 0 > a_write (desc, &FETCH_CHAR (tem), XINT (end) - tem, |
c975dd7a RS |
2972 | tem, &annotations); |
2973 | nwritten += XINT (end) - tem; | |
d6a3cc15 RS |
2974 | save_errno = errno; |
2975 | } | |
c975dd7a RS |
2976 | |
2977 | if (nwritten == 0) | |
d6a3cc15 RS |
2978 | { |
2979 | /* If file was empty, still need to write the annotations */ | |
c975dd7a | 2980 | failure = 0 > a_write (desc, "", 0, XINT (start), &annotations); |
570d7624 JB |
2981 | save_errno = errno; |
2982 | } | |
2983 | } | |
2984 | ||
2985 | immediate_quit = 0; | |
2986 | ||
6e23c83e | 2987 | #ifdef HAVE_FSYNC |
570d7624 JB |
2988 | /* Note fsync appears to change the modtime on BSD4.2 (both vax and sun). |
2989 | Disk full in NFS may be reported here. */ | |
1daffa1c RS |
2990 | /* mib says that closing the file will try to write as fast as NFS can do |
2991 | it, and that means the fsync here is not crucial for autosave files. */ | |
2992 | if (!auto_saving && fsync (desc) < 0) | |
570d7624 | 2993 | failure = 1, save_errno = errno; |
570d7624 JB |
2994 | #endif |
2995 | ||
2996 | /* Spurious "file has changed on disk" warnings have been | |
2997 | observed on Suns as well. | |
2998 | It seems that `close' can change the modtime, under nfs. | |
2999 | ||
3000 | (This has supposedly been fixed in Sunos 4, | |
3001 | but who knows about all the other machines with NFS?) */ | |
3002 | #if 0 | |
3003 | ||
3004 | /* On VMS and APOLLO, must do the stat after the close | |
3005 | since closing changes the modtime. */ | |
3006 | #ifndef VMS | |
3007 | #ifndef APOLLO | |
3008 | /* Recall that #if defined does not work on VMS. */ | |
3009 | #define FOO | |
3010 | fstat (desc, &st); | |
3011 | #endif | |
3012 | #endif | |
3013 | #endif | |
3014 | ||
3015 | /* NFS can report a write failure now. */ | |
3016 | if (close (desc) < 0) | |
3017 | failure = 1, save_errno = errno; | |
3018 | ||
3019 | #ifdef VMS | |
3020 | /* If we wrote to a temporary name and had no errors, rename to real name. */ | |
3021 | if (fname) | |
3022 | { | |
3023 | if (!failure) | |
3024 | failure = (rename (fn, fname) != 0), save_errno = errno; | |
3025 | fn = fname; | |
3026 | } | |
3027 | #endif /* VMS */ | |
3028 | ||
3029 | #ifndef FOO | |
3030 | stat (fn, &st); | |
3031 | #endif | |
3032 | /* Discard the unwind protect */ | |
3033 | specpdl_ptr = specpdl + count; | |
3034 | ||
3035 | #ifdef CLASH_DETECTION | |
3036 | if (!auto_saving) | |
3b7792ed | 3037 | unlock_file (visit_file); |
570d7624 JB |
3038 | #endif /* CLASH_DETECTION */ |
3039 | ||
3040 | /* Do this before reporting IO error | |
3041 | to avoid a "file has changed on disk" warning on | |
3042 | next attempt to save. */ | |
d6a3cc15 | 3043 | if (visiting) |
570d7624 JB |
3044 | current_buffer->modtime = st.st_mtime; |
3045 | ||
3046 | if (failure) | |
ce97267f | 3047 | error ("IO error writing %s: %s", fn, strerror (save_errno)); |
570d7624 | 3048 | |
d6a3cc15 | 3049 | if (visiting) |
570d7624 JB |
3050 | { |
3051 | current_buffer->save_modified = MODIFF; | |
3052 | XFASTINT (current_buffer->save_length) = Z - BEG; | |
3b7792ed | 3053 | current_buffer->filename = visit_file; |
570d7624 | 3054 | } |
d6a3cc15 | 3055 | else if (quietly) |
570d7624 JB |
3056 | return Qnil; |
3057 | ||
3058 | if (!auto_saving) | |
3b7792ed | 3059 | message ("Wrote %s", XSTRING (visit_file)->data); |
570d7624 JB |
3060 | |
3061 | return Qnil; | |
3062 | } | |
3063 | ||
d6a3cc15 RS |
3064 | Lisp_Object merge (); |
3065 | ||
3066 | DEFUN ("car-less-than-car", Fcar_less_than_car, Scar_less_than_car, 2, 2, 0, | |
2ba0ccff | 3067 | "Return t if (car A) is numerically less than (car B).") |
d6a3cc15 RS |
3068 | (a, b) |
3069 | Lisp_Object a, b; | |
3070 | { | |
3071 | return Flss (Fcar (a), Fcar (b)); | |
3072 | } | |
3073 | ||
3074 | /* Build the complete list of annotations appropriate for writing out | |
3075 | the text between START and END, by calling all the functions in | |
3076 | write-region-annotate-functions and merging the lists they return. */ | |
3077 | ||
3078 | static Lisp_Object | |
3079 | build_annotations (start, end) | |
3080 | Lisp_Object start, end; | |
3081 | { | |
3082 | Lisp_Object annotations; | |
3083 | Lisp_Object p, res; | |
3084 | struct gcpro gcpro1, gcpro2; | |
3085 | ||
3086 | annotations = Qnil; | |
3087 | p = Vwrite_region_annotate_functions; | |
3088 | GCPRO2 (annotations, p); | |
3089 | while (!NILP (p)) | |
3090 | { | |
3091 | res = call2 (Fcar (p), start, end); | |
3092 | Flength (res); /* Check basic validity of return value */ | |
3093 | annotations = merge (annotations, res, Qcar_less_than_car); | |
3094 | p = Fcdr (p); | |
3095 | } | |
3096 | UNGCPRO; | |
3097 | return annotations; | |
3098 | } | |
3099 | ||
3100 | /* Write to descriptor DESC the LEN characters starting at ADDR, | |
3101 | assuming they start at position POS in the buffer. | |
3102 | Intersperse with them the annotations from *ANNOT | |
3103 | (those which fall within the range of positions POS to POS + LEN), | |
3104 | each at its appropriate position. | |
3105 | ||
3106 | Modify *ANNOT by discarding elements as we output them. | |
3107 | The return value is negative in case of system call failure. */ | |
3108 | ||
3109 | int | |
3110 | a_write (desc, addr, len, pos, annot) | |
3111 | int desc; | |
3112 | register char *addr; | |
3113 | register int len; | |
3114 | int pos; | |
3115 | Lisp_Object *annot; | |
3116 | { | |
3117 | Lisp_Object tem; | |
3118 | int nextpos; | |
3119 | int lastpos = pos + len; | |
3120 | ||
3121 | while (1) | |
3122 | { | |
3123 | tem = Fcar_safe (Fcar (*annot)); | |
3124 | if (INTEGERP (tem) && XINT (tem) >= pos && XFASTINT (tem) <= lastpos) | |
3125 | nextpos = XFASTINT (tem); | |
3126 | else | |
3127 | return e_write (desc, addr, lastpos - pos); | |
3128 | if (nextpos > pos) | |
3129 | { | |
3130 | if (0 > e_write (desc, addr, nextpos - pos)) | |
3131 | return -1; | |
3132 | addr += nextpos - pos; | |
3133 | pos = nextpos; | |
3134 | } | |
3135 | tem = Fcdr (Fcar (*annot)); | |
3136 | if (STRINGP (tem)) | |
3137 | { | |
3138 | if (0 > e_write (desc, XSTRING (tem)->data, XSTRING (tem)->size)) | |
3139 | return -1; | |
3140 | } | |
3141 | *annot = Fcdr (*annot); | |
3142 | } | |
3143 | } | |
3144 | ||
570d7624 JB |
3145 | int |
3146 | e_write (desc, addr, len) | |
3147 | int desc; | |
3148 | register char *addr; | |
3149 | register int len; | |
3150 | { | |
3151 | char buf[16 * 1024]; | |
3152 | register char *p, *end; | |
3153 | ||
3154 | if (!EQ (current_buffer->selective_display, Qt)) | |
3155 | return write (desc, addr, len) - len; | |
3156 | else | |
3157 | { | |
3158 | p = buf; | |
3159 | end = p + sizeof buf; | |
3160 | while (len--) | |
3161 | { | |
3162 | if (p == end) | |
3163 | { | |
3164 | if (write (desc, buf, sizeof buf) != sizeof buf) | |
3165 | return -1; | |
3166 | p = buf; | |
3167 | } | |
3168 | *p = *addr++; | |
3169 | if (*p++ == '\015') | |
3170 | p[-1] = '\n'; | |
3171 | } | |
3172 | if (p != buf) | |
3173 | if (write (desc, buf, p - buf) != p - buf) | |
3174 | return -1; | |
3175 | } | |
3176 | return 0; | |
3177 | } | |
3178 | ||
3179 | DEFUN ("verify-visited-file-modtime", Fverify_visited_file_modtime, | |
3180 | Sverify_visited_file_modtime, 1, 1, 0, | |
3181 | "Return t if last mod time of BUF's visited file matches what BUF records.\n\ | |
3182 | This means that the file has not been changed since it was visited or saved.") | |
3183 | (buf) | |
3184 | Lisp_Object buf; | |
3185 | { | |
3186 | struct buffer *b; | |
3187 | struct stat st; | |
32f4334d | 3188 | Lisp_Object handler; |
570d7624 JB |
3189 | |
3190 | CHECK_BUFFER (buf, 0); | |
3191 | b = XBUFFER (buf); | |
3192 | ||
3193 | if (XTYPE (b->filename) != Lisp_String) return Qt; | |
3194 | if (b->modtime == 0) return Qt; | |
3195 | ||
32f4334d RS |
3196 | /* If the file name has special constructs in it, |
3197 | call the corresponding file handler. */ | |
642ef245 | 3198 | handler = Ffind_file_name_handler (b->filename); |
32f4334d | 3199 | if (!NILP (handler)) |
09121adc | 3200 | return call2 (handler, Qverify_visited_file_modtime, buf); |
32f4334d | 3201 | |
570d7624 JB |
3202 | if (stat (XSTRING (b->filename)->data, &st) < 0) |
3203 | { | |
3204 | /* If the file doesn't exist now and didn't exist before, | |
3205 | we say that it isn't modified, provided the error is a tame one. */ | |
3206 | if (errno == ENOENT || errno == EACCES || errno == ENOTDIR) | |
3207 | st.st_mtime = -1; | |
3208 | else | |
3209 | st.st_mtime = 0; | |
3210 | } | |
3211 | if (st.st_mtime == b->modtime | |
3212 | /* If both are positive, accept them if they are off by one second. */ | |
3213 | || (st.st_mtime > 0 && b->modtime > 0 | |
3214 | && (st.st_mtime == b->modtime + 1 | |
3215 | || st.st_mtime == b->modtime - 1))) | |
3216 | return Qt; | |
3217 | return Qnil; | |
3218 | } | |
3219 | ||
3220 | DEFUN ("clear-visited-file-modtime", Fclear_visited_file_modtime, | |
3221 | Sclear_visited_file_modtime, 0, 0, 0, | |
3222 | "Clear out records of last mod time of visited file.\n\ | |
3223 | Next attempt to save will certainly not complain of a discrepancy.") | |
3224 | () | |
3225 | { | |
3226 | current_buffer->modtime = 0; | |
3227 | return Qnil; | |
3228 | } | |
3229 | ||
f5d5eccf RS |
3230 | DEFUN ("visited-file-modtime", Fvisited_file_modtime, |
3231 | Svisited_file_modtime, 0, 0, 0, | |
3232 | "Return the current buffer's recorded visited file modification time.\n\ | |
3233 | The value is a list of the form (HIGH . LOW), like the time values\n\ | |
3234 | that `file-attributes' returns.") | |
3235 | () | |
3236 | { | |
3237 | return long_to_cons (current_buffer->modtime); | |
3238 | } | |
3239 | ||
570d7624 | 3240 | DEFUN ("set-visited-file-modtime", Fset_visited_file_modtime, |
f5d5eccf | 3241 | Sset_visited_file_modtime, 0, 1, 0, |
570d7624 JB |
3242 | "Update buffer's recorded modification time from the visited file's time.\n\ |
3243 | Useful if the buffer was not read from the file normally\n\ | |
f5d5eccf RS |
3244 | or if the file itself has been changed for some known benign reason.\n\ |
3245 | An argument specifies the modification time value to use\n\ | |
3246 | \(instead of that of the visited file), in the form of a list\n\ | |
3247 | \(HIGH . LOW) or (HIGH LOW).") | |
3248 | (time_list) | |
3249 | Lisp_Object time_list; | |
570d7624 | 3250 | { |
f5d5eccf RS |
3251 | if (!NILP (time_list)) |
3252 | current_buffer->modtime = cons_to_long (time_list); | |
3253 | else | |
3254 | { | |
3255 | register Lisp_Object filename; | |
3256 | struct stat st; | |
3257 | Lisp_Object handler; | |
570d7624 | 3258 | |
f5d5eccf | 3259 | filename = Fexpand_file_name (current_buffer->filename, Qnil); |
32f4334d | 3260 | |
f5d5eccf RS |
3261 | /* If the file name has special constructs in it, |
3262 | call the corresponding file handler. */ | |
3263 | handler = Ffind_file_name_handler (filename); | |
3264 | if (!NILP (handler)) | |
caf3c431 | 3265 | /* The handler can find the file name the same way we did. */ |
76c881b0 | 3266 | return call2 (handler, Qset_visited_file_modtime, Qnil); |
f5d5eccf RS |
3267 | else if (stat (XSTRING (filename)->data, &st) >= 0) |
3268 | current_buffer->modtime = st.st_mtime; | |
3269 | } | |
570d7624 JB |
3270 | |
3271 | return Qnil; | |
3272 | } | |
3273 | \f | |
3274 | Lisp_Object | |
3275 | auto_save_error () | |
3276 | { | |
3277 | unsigned char *name = XSTRING (current_buffer->name)->data; | |
3278 | ||
3279 | ring_bell (); | |
3280 | message ("Autosaving...error for %s", name); | |
de49a6d3 | 3281 | Fsleep_for (make_number (1), Qnil); |
570d7624 | 3282 | message ("Autosaving...error!for %s", name); |
de49a6d3 | 3283 | Fsleep_for (make_number (1), Qnil); |
570d7624 | 3284 | message ("Autosaving...error for %s", name); |
de49a6d3 | 3285 | Fsleep_for (make_number (1), Qnil); |
570d7624 JB |
3286 | return Qnil; |
3287 | } | |
3288 | ||
3289 | Lisp_Object | |
3290 | auto_save_1 () | |
3291 | { | |
3292 | unsigned char *fn; | |
3293 | struct stat st; | |
3294 | ||
3295 | /* Get visited file's mode to become the auto save file's mode. */ | |
3296 | if (stat (XSTRING (current_buffer->filename)->data, &st) >= 0) | |
3297 | /* But make sure we can overwrite it later! */ | |
3298 | auto_save_mode_bits = st.st_mode | 0600; | |
3299 | else | |
3300 | auto_save_mode_bits = 0666; | |
3301 | ||
3302 | return | |
3303 | Fwrite_region (Qnil, Qnil, | |
3304 | current_buffer->auto_save_file_name, | |
3305 | Qnil, Qlambda); | |
3306 | } | |
3307 | ||
3308 | DEFUN ("do-auto-save", Fdo_auto_save, Sdo_auto_save, 0, 2, "", | |
3309 | "Auto-save all buffers that need it.\n\ | |
3310 | This is all buffers that have auto-saving enabled\n\ | |
3311 | and are changed since last auto-saved.\n\ | |
3312 | Auto-saving writes the buffer into a file\n\ | |
3313 | so that your editing is not lost if the system crashes.\n\ | |
3314 | This file is not the file you visited; that changes only when you save.\n\n\ | |
3315 | Non-nil first argument means do not print any message if successful.\n\ | |
4746118a | 3316 | Non-nil second argument means save only current buffer.") |
17857782 JB |
3317 | (no_message, current_only) |
3318 | Lisp_Object no_message, current_only; | |
570d7624 JB |
3319 | { |
3320 | struct buffer *old = current_buffer, *b; | |
3321 | Lisp_Object tail, buf; | |
3322 | int auto_saved = 0; | |
3323 | char *omessage = echo_area_glyphs; | |
f14b1c68 JB |
3324 | extern int minibuf_level; |
3325 | int do_handled_files; | |
ff4c9993 RS |
3326 | Lisp_Object oquit; |
3327 | ||
3328 | /* Ordinarily don't quit within this function, | |
3329 | but don't make it impossible to quit (in case we get hung in I/O). */ | |
3330 | oquit = Vquit_flag; | |
3331 | Vquit_flag = Qnil; | |
570d7624 JB |
3332 | |
3333 | /* No GCPRO needed, because (when it matters) all Lisp_Object variables | |
3334 | point to non-strings reached from Vbuffer_alist. */ | |
3335 | ||
3336 | auto_saving = 1; | |
3337 | if (minibuf_level) | |
17857782 | 3338 | no_message = Qt; |
570d7624 JB |
3339 | |
3340 | /* Vrun_hooks is nil before emacs is dumped, and inc-vers.el will | |
3341 | eventually call do-auto-save, so don't err here in that case. */ | |
265a9e55 | 3342 | if (!NILP (Vrun_hooks)) |
570d7624 JB |
3343 | call1 (Vrun_hooks, intern ("auto-save-hook")); |
3344 | ||
f14b1c68 JB |
3345 | /* First, save all files which don't have handlers. If Emacs is |
3346 | crashing, the handlers may tweak what is causing Emacs to crash | |
3347 | in the first place, and it would be a shame if Emacs failed to | |
3348 | autosave perfectly ordinary files because it couldn't handle some | |
3349 | ange-ftp'd file. */ | |
3350 | for (do_handled_files = 0; do_handled_files < 2; do_handled_files++) | |
3351 | for (tail = Vbuffer_alist; XGCTYPE (tail) == Lisp_Cons; | |
3352 | tail = XCONS (tail)->cdr) | |
3353 | { | |
3354 | buf = XCONS (XCONS (tail)->car)->cdr; | |
3355 | b = XBUFFER (buf); | |
17857782 | 3356 | |
f14b1c68 JB |
3357 | if (!NILP (current_only) |
3358 | && b != current_buffer) | |
3359 | continue; | |
17857782 | 3360 | |
f14b1c68 JB |
3361 | /* Check for auto save enabled |
3362 | and file changed since last auto save | |
3363 | and file changed since last real save. */ | |
3364 | if (XTYPE (b->auto_save_file_name) == Lisp_String | |
3365 | && b->save_modified < BUF_MODIFF (b) | |
3366 | && b->auto_save_modified < BUF_MODIFF (b) | |
3367 | && (do_handled_files | |
3368 | || NILP (Ffind_file_name_handler (b->auto_save_file_name)))) | |
3369 | { | |
b60247d9 RS |
3370 | EMACS_TIME before_time, after_time; |
3371 | ||
3372 | EMACS_GET_TIME (before_time); | |
3373 | ||
3374 | /* If we had a failure, don't try again for 20 minutes. */ | |
3375 | if (b->auto_save_failure_time >= 0 | |
3376 | && EMACS_SECS (before_time) - b->auto_save_failure_time < 1200) | |
3377 | continue; | |
3378 | ||
f14b1c68 JB |
3379 | if ((XFASTINT (b->save_length) * 10 |
3380 | > (BUF_Z (b) - BUF_BEG (b)) * 13) | |
3381 | /* A short file is likely to change a large fraction; | |
3382 | spare the user annoying messages. */ | |
3383 | && XFASTINT (b->save_length) > 5000 | |
3384 | /* These messages are frequent and annoying for `*mail*'. */ | |
3385 | && !EQ (b->filename, Qnil) | |
3386 | && NILP (no_message)) | |
3387 | { | |
3388 | /* It has shrunk too much; turn off auto-saving here. */ | |
3389 | message ("Buffer %s has shrunk a lot; auto save turned off there", | |
3390 | XSTRING (b->name)->data); | |
3391 | /* User can reenable saving with M-x auto-save. */ | |
3392 | b->auto_save_file_name = Qnil; | |
3393 | /* Prevent warning from repeating if user does so. */ | |
3394 | XFASTINT (b->save_length) = 0; | |
3395 | Fsleep_for (make_number (1), Qnil); | |
3396 | continue; | |
3397 | } | |
3398 | set_buffer_internal (b); | |
3399 | if (!auto_saved && NILP (no_message)) | |
3400 | message1 ("Auto-saving..."); | |
3401 | internal_condition_case (auto_save_1, Qt, auto_save_error); | |
3402 | auto_saved++; | |
3403 | b->auto_save_modified = BUF_MODIFF (b); | |
3404 | XFASTINT (current_buffer->save_length) = Z - BEG; | |
3405 | set_buffer_internal (old); | |
b60247d9 RS |
3406 | |
3407 | EMACS_GET_TIME (after_time); | |
3408 | ||
3409 | /* If auto-save took more than 60 seconds, | |
3410 | assume it was an NFS failure that got a timeout. */ | |
3411 | if (EMACS_SECS (after_time) - EMACS_SECS (before_time) > 60) | |
3412 | b->auto_save_failure_time = EMACS_SECS (after_time); | |
f14b1c68 JB |
3413 | } |
3414 | } | |
570d7624 | 3415 | |
b67f2ca5 RS |
3416 | /* Prevent another auto save till enough input events come in. */ |
3417 | record_auto_save (); | |
570d7624 | 3418 | |
17857782 | 3419 | if (auto_saved && NILP (no_message)) |
570d7624 JB |
3420 | message1 (omessage ? omessage : "Auto-saving...done"); |
3421 | ||
ff4c9993 RS |
3422 | Vquit_flag = oquit; |
3423 | ||
570d7624 JB |
3424 | auto_saving = 0; |
3425 | return Qnil; | |
3426 | } | |
3427 | ||
3428 | DEFUN ("set-buffer-auto-saved", Fset_buffer_auto_saved, | |
3429 | Sset_buffer_auto_saved, 0, 0, 0, | |
3430 | "Mark current buffer as auto-saved with its current text.\n\ | |
3431 | No auto-save file will be written until the buffer changes again.") | |
3432 | () | |
3433 | { | |
3434 | current_buffer->auto_save_modified = MODIFF; | |
3435 | XFASTINT (current_buffer->save_length) = Z - BEG; | |
b60247d9 RS |
3436 | current_buffer->auto_save_failure_time = -1; |
3437 | return Qnil; | |
3438 | } | |
3439 | ||
3440 | DEFUN ("clear-buffer-auto-save-failure", Fclear_buffer_auto_save_failure, | |
3441 | Sclear_buffer_auto_save_failure, 0, 0, 0, | |
3442 | "Clear any record of a recent auto-save failure in the current buffer.") | |
3443 | () | |
3444 | { | |
3445 | current_buffer->auto_save_failure_time = -1; | |
570d7624 JB |
3446 | return Qnil; |
3447 | } | |
3448 | ||
3449 | DEFUN ("recent-auto-save-p", Frecent_auto_save_p, Srecent_auto_save_p, | |
3450 | 0, 0, 0, | |
3451 | "Return t if buffer has been auto-saved since last read in or saved.") | |
3452 | () | |
3453 | { | |
3454 | return (current_buffer->save_modified < current_buffer->auto_save_modified) ? Qt : Qnil; | |
3455 | } | |
3456 | \f | |
3457 | /* Reading and completing file names */ | |
3458 | extern Lisp_Object Ffile_name_completion (), Ffile_name_all_completions (); | |
3459 | ||
3460 | DEFUN ("read-file-name-internal", Fread_file_name_internal, Sread_file_name_internal, | |
3461 | 3, 3, 0, | |
3462 | "Internal subroutine for read-file-name. Do not call this.") | |
3463 | (string, dir, action) | |
3464 | Lisp_Object string, dir, action; | |
3465 | /* action is nil for complete, t for return list of completions, | |
3466 | lambda for verify final value */ | |
3467 | { | |
3468 | Lisp_Object name, specdir, realdir, val, orig_string; | |
09121adc RS |
3469 | int changed; |
3470 | struct gcpro gcpro1, gcpro2, gcpro3, gcpro4; | |
3471 | ||
3472 | realdir = dir; | |
3473 | name = string; | |
3474 | orig_string = Qnil; | |
3475 | specdir = Qnil; | |
3476 | changed = 0; | |
3477 | /* No need to protect ACTION--we only compare it with t and nil. */ | |
3478 | GCPRO4 (string, realdir, name, specdir); | |
570d7624 JB |
3479 | |
3480 | if (XSTRING (string)->size == 0) | |
3481 | { | |
570d7624 | 3482 | if (EQ (action, Qlambda)) |
09121adc RS |
3483 | { |
3484 | UNGCPRO; | |
3485 | return Qnil; | |
3486 | } | |
570d7624 JB |
3487 | } |
3488 | else | |
3489 | { | |
3490 | orig_string = string; | |
3491 | string = Fsubstitute_in_file_name (string); | |
09121adc | 3492 | changed = NILP (Fstring_equal (string, orig_string)); |
570d7624 | 3493 | name = Ffile_name_nondirectory (string); |
09121adc RS |
3494 | val = Ffile_name_directory (string); |
3495 | if (! NILP (val)) | |
3496 | realdir = Fexpand_file_name (val, realdir); | |
570d7624 JB |
3497 | } |
3498 | ||
265a9e55 | 3499 | if (NILP (action)) |
570d7624 JB |
3500 | { |
3501 | specdir = Ffile_name_directory (string); | |
3502 | val = Ffile_name_completion (name, realdir); | |
09121adc | 3503 | UNGCPRO; |
570d7624 JB |
3504 | if (XTYPE (val) != Lisp_String) |
3505 | { | |
09121adc | 3506 | if (changed) |
570d7624 | 3507 | return string; |
09121adc | 3508 | return val; |
570d7624 JB |
3509 | } |
3510 | ||
265a9e55 | 3511 | if (!NILP (specdir)) |
570d7624 JB |
3512 | val = concat2 (specdir, val); |
3513 | #ifndef VMS | |
3514 | { | |
3515 | register unsigned char *old, *new; | |
3516 | register int n; | |
3517 | int osize, count; | |
3518 | ||
3519 | osize = XSTRING (val)->size; | |
3520 | /* Quote "$" as "$$" to get it past substitute-in-file-name */ | |
3521 | for (n = osize, count = 0, old = XSTRING (val)->data; n > 0; n--) | |
3522 | if (*old++ == '$') count++; | |
3523 | if (count > 0) | |
3524 | { | |
3525 | old = XSTRING (val)->data; | |
3526 | val = Fmake_string (make_number (osize + count), make_number (0)); | |
3527 | new = XSTRING (val)->data; | |
3528 | for (n = osize; n > 0; n--) | |
3529 | if (*old != '$') | |
3530 | *new++ = *old++; | |
3531 | else | |
3532 | { | |
3533 | *new++ = '$'; | |
3534 | *new++ = '$'; | |
3535 | old++; | |
3536 | } | |
3537 | } | |
3538 | } | |
3539 | #endif /* Not VMS */ | |
09121adc | 3540 | return val; |
570d7624 | 3541 | } |
09121adc | 3542 | UNGCPRO; |
570d7624 JB |
3543 | |
3544 | if (EQ (action, Qt)) | |
3545 | return Ffile_name_all_completions (name, realdir); | |
3546 | /* Only other case actually used is ACTION = lambda */ | |
3547 | #ifdef VMS | |
3548 | /* Supposedly this helps commands such as `cd' that read directory names, | |
3549 | but can someone explain how it helps them? -- RMS */ | |
3550 | if (XSTRING (name)->size == 0) | |
3551 | return Qt; | |
3552 | #endif /* VMS */ | |
3553 | return Ffile_exists_p (string); | |
3554 | } | |
3555 | ||
3556 | DEFUN ("read-file-name", Fread_file_name, Sread_file_name, 1, 5, 0, | |
3557 | "Read file name, prompting with PROMPT and completing in directory DIR.\n\ | |
3558 | Value is not expanded---you must call `expand-file-name' yourself.\n\ | |
3559 | Default name to DEFAULT if user enters a null string.\n\ | |
3560 | (If DEFAULT is omitted, the visited file name is used.)\n\ | |
3561 | Fourth arg MUSTMATCH non-nil means require existing file's name.\n\ | |
3562 | Non-nil and non-t means also require confirmation after completion.\n\ | |
3563 | Fifth arg INITIAL specifies text to start with.\n\ | |
3564 | DIR defaults to current buffer's directory default.") | |
3565 | (prompt, dir, defalt, mustmatch, initial) | |
3566 | Lisp_Object prompt, dir, defalt, mustmatch, initial; | |
3567 | { | |
85b5fe07 | 3568 | Lisp_Object val, insdef, insdef1, tem; |
570d7624 JB |
3569 | struct gcpro gcpro1, gcpro2; |
3570 | register char *homedir; | |
3571 | int count; | |
3572 | ||
265a9e55 | 3573 | if (NILP (dir)) |
570d7624 | 3574 | dir = current_buffer->directory; |
265a9e55 | 3575 | if (NILP (defalt)) |
570d7624 JB |
3576 | defalt = current_buffer->filename; |
3577 | ||
3578 | /* If dir starts with user's homedir, change that to ~. */ | |
3579 | homedir = (char *) egetenv ("HOME"); | |
3580 | if (homedir != 0 | |
3581 | && XTYPE (dir) == Lisp_String | |
3582 | && !strncmp (homedir, XSTRING (dir)->data, strlen (homedir)) | |
3583 | && XSTRING (dir)->data[strlen (homedir)] == '/') | |
3584 | { | |
3585 | dir = make_string (XSTRING (dir)->data + strlen (homedir) - 1, | |
3586 | XSTRING (dir)->size - strlen (homedir) + 1); | |
3587 | XSTRING (dir)->data[0] = '~'; | |
3588 | } | |
3589 | ||
3590 | if (insert_default_directory) | |
3591 | { | |
3592 | insdef = dir; | |
85b5fe07 | 3593 | insdef1 = dir; |
265a9e55 | 3594 | if (!NILP (initial)) |
570d7624 | 3595 | { |
15c65264 | 3596 | Lisp_Object args[2], pos; |
570d7624 JB |
3597 | |
3598 | args[0] = insdef; | |
3599 | args[1] = initial; | |
3600 | insdef = Fconcat (2, args); | |
509b05ed | 3601 | pos = make_number (XSTRING (dir)->size); |
85b5fe07 | 3602 | insdef1 = Fcons (insdef, pos); |
570d7624 | 3603 | } |
570d7624 JB |
3604 | } |
3605 | else | |
85b5fe07 | 3606 | insdef = Qnil, insdef1 = Qnil; |
570d7624 JB |
3607 | |
3608 | #ifdef VMS | |
3609 | count = specpdl_ptr - specpdl; | |
3610 | specbind (intern ("completion-ignore-case"), Qt); | |
3611 | #endif | |
3612 | ||
3613 | GCPRO2 (insdef, defalt); | |
3614 | val = Fcompleting_read (prompt, intern ("read-file-name-internal"), | |
85b5fe07 | 3615 | dir, mustmatch, insdef1, |
15c65264 | 3616 | Qfile_name_history); |
570d7624 JB |
3617 | |
3618 | #ifdef VMS | |
3619 | unbind_to (count, Qnil); | |
3620 | #endif | |
3621 | ||
3622 | UNGCPRO; | |
265a9e55 | 3623 | if (NILP (val)) |
570d7624 JB |
3624 | error ("No file name specified"); |
3625 | tem = Fstring_equal (val, insdef); | |
265a9e55 | 3626 | if (!NILP (tem) && !NILP (defalt)) |
570d7624 | 3627 | return defalt; |
b320926a | 3628 | if (XSTRING (val)->size == 0 && NILP (insdef)) |
d9bc1c99 RS |
3629 | { |
3630 | if (!NILP (defalt)) | |
3631 | return defalt; | |
3632 | else | |
3633 | error ("No default file name"); | |
3634 | } | |
570d7624 JB |
3635 | return Fsubstitute_in_file_name (val); |
3636 | } | |
3637 | ||
3638 | #if 0 /* Old version */ | |
3639 | DEFUN ("read-file-name", Fread_file_name, Sread_file_name, 1, 5, 0, | |
3640 | "Read file name, prompting with PROMPT and completing in directory DIR.\n\ | |
3641 | Value is not expanded---you must call `expand-file-name' yourself.\n\ | |
3642 | Default name to DEFAULT if user enters a null string.\n\ | |
3643 | (If DEFAULT is omitted, the visited file name is used.)\n\ | |
3644 | Fourth arg MUSTMATCH non-nil means require existing file's name.\n\ | |
3645 | Non-nil and non-t means also require confirmation after completion.\n\ | |
3646 | Fifth arg INITIAL specifies text to start with.\n\ | |
3647 | DIR defaults to current buffer's directory default.") | |
3648 | (prompt, dir, defalt, mustmatch, initial) | |
3649 | Lisp_Object prompt, dir, defalt, mustmatch, initial; | |
3650 | { | |
3651 | Lisp_Object val, insdef, tem; | |
3652 | struct gcpro gcpro1, gcpro2; | |
3653 | register char *homedir; | |
3654 | int count; | |
3655 | ||
265a9e55 | 3656 | if (NILP (dir)) |
570d7624 | 3657 | dir = current_buffer->directory; |
265a9e55 | 3658 | if (NILP (defalt)) |
570d7624 JB |
3659 | defalt = current_buffer->filename; |
3660 | ||
3661 | /* If dir starts with user's homedir, change that to ~. */ | |
3662 | homedir = (char *) egetenv ("HOME"); | |
3663 | if (homedir != 0 | |
3664 | && XTYPE (dir) == Lisp_String | |
3665 | && !strncmp (homedir, XSTRING (dir)->data, strlen (homedir)) | |
3666 | && XSTRING (dir)->data[strlen (homedir)] == '/') | |
3667 | { | |
3668 | dir = make_string (XSTRING (dir)->data + strlen (homedir) - 1, | |
3669 | XSTRING (dir)->size - strlen (homedir) + 1); | |
3670 | XSTRING (dir)->data[0] = '~'; | |
3671 | } | |
3672 | ||
265a9e55 | 3673 | if (!NILP (initial)) |
570d7624 JB |
3674 | insdef = initial; |
3675 | else if (insert_default_directory) | |
3676 | insdef = dir; | |
3677 | else | |
3678 | insdef = build_string (""); | |
3679 | ||
3680 | #ifdef VMS | |
3681 | count = specpdl_ptr - specpdl; | |
3682 | specbind (intern ("completion-ignore-case"), Qt); | |
3683 | #endif | |
3684 | ||
3685 | GCPRO2 (insdef, defalt); | |
3686 | val = Fcompleting_read (prompt, intern ("read-file-name-internal"), | |
3687 | dir, mustmatch, | |
15c65264 RS |
3688 | insert_default_directory ? insdef : Qnil, |
3689 | Qfile_name_history); | |
570d7624 JB |
3690 | |
3691 | #ifdef VMS | |
3692 | unbind_to (count, Qnil); | |
3693 | #endif | |
3694 | ||
3695 | UNGCPRO; | |
265a9e55 | 3696 | if (NILP (val)) |
570d7624 JB |
3697 | error ("No file name specified"); |
3698 | tem = Fstring_equal (val, insdef); | |
265a9e55 | 3699 | if (!NILP (tem) && !NILP (defalt)) |
570d7624 JB |
3700 | return defalt; |
3701 | return Fsubstitute_in_file_name (val); | |
3702 | } | |
3703 | #endif /* Old version */ | |
3704 | \f | |
3705 | syms_of_fileio () | |
3706 | { | |
0bf2eed2 RS |
3707 | Qexpand_file_name = intern ("expand-file-name"); |
3708 | Qdirectory_file_name = intern ("directory-file-name"); | |
3709 | Qfile_name_directory = intern ("file-name-directory"); | |
3710 | Qfile_name_nondirectory = intern ("file-name-nondirectory"); | |
642ef245 | 3711 | Qunhandled_file_name_directory = intern ("unhandled-file-name-directory"); |
0bf2eed2 | 3712 | Qfile_name_as_directory = intern ("file-name-as-directory"); |
32f4334d RS |
3713 | Qcopy_file = intern ("copy-file"); |
3714 | Qmake_directory = intern ("make-directory"); | |
3715 | Qdelete_directory = intern ("delete-directory"); | |
3716 | Qdelete_file = intern ("delete-file"); | |
3717 | Qrename_file = intern ("rename-file"); | |
3718 | Qadd_name_to_file = intern ("add-name-to-file"); | |
3719 | Qmake_symbolic_link = intern ("make-symbolic-link"); | |
3720 | Qfile_exists_p = intern ("file-exists-p"); | |
3721 | Qfile_executable_p = intern ("file-executable-p"); | |
3722 | Qfile_readable_p = intern ("file-readable-p"); | |
3723 | Qfile_symlink_p = intern ("file-symlink-p"); | |
3724 | Qfile_writable_p = intern ("file-writable-p"); | |
3725 | Qfile_directory_p = intern ("file-directory-p"); | |
3726 | Qfile_accessible_directory_p = intern ("file-accessible-directory-p"); | |
3727 | Qfile_modes = intern ("file-modes"); | |
3728 | Qset_file_modes = intern ("set-file-modes"); | |
3729 | Qfile_newer_than_file_p = intern ("file-newer-than-file-p"); | |
3730 | Qinsert_file_contents = intern ("insert-file-contents"); | |
3731 | Qwrite_region = intern ("write-region"); | |
3732 | Qverify_visited_file_modtime = intern ("verify-visited-file-modtime"); | |
3ec46acd | 3733 | Qset_visited_file_modtime = intern ("set-visited-file-modtime"); |
32f4334d | 3734 | |
642ef245 JB |
3735 | staticpro (&Qexpand_file_name); |
3736 | staticpro (&Qdirectory_file_name); | |
3737 | staticpro (&Qfile_name_directory); | |
3738 | staticpro (&Qfile_name_nondirectory); | |
3739 | staticpro (&Qunhandled_file_name_directory); | |
3740 | staticpro (&Qfile_name_as_directory); | |
15c65264 RS |
3741 | staticpro (&Qcopy_file); |
3742 | staticpro (&Qmake_directory); | |
3743 | staticpro (&Qdelete_directory); | |
3744 | staticpro (&Qdelete_file); | |
3745 | staticpro (&Qrename_file); | |
3746 | staticpro (&Qadd_name_to_file); | |
3747 | staticpro (&Qmake_symbolic_link); | |
3748 | staticpro (&Qfile_exists_p); | |
3749 | staticpro (&Qfile_executable_p); | |
3750 | staticpro (&Qfile_readable_p); | |
3751 | staticpro (&Qfile_symlink_p); | |
3752 | staticpro (&Qfile_writable_p); | |
3753 | staticpro (&Qfile_directory_p); | |
3754 | staticpro (&Qfile_accessible_directory_p); | |
3755 | staticpro (&Qfile_modes); | |
3756 | staticpro (&Qset_file_modes); | |
3757 | staticpro (&Qfile_newer_than_file_p); | |
3758 | staticpro (&Qinsert_file_contents); | |
3759 | staticpro (&Qwrite_region); | |
3760 | staticpro (&Qverify_visited_file_modtime); | |
642ef245 JB |
3761 | |
3762 | Qfile_name_history = intern ("file-name-history"); | |
3763 | Fset (Qfile_name_history, Qnil); | |
15c65264 RS |
3764 | staticpro (&Qfile_name_history); |
3765 | ||
570d7624 JB |
3766 | Qfile_error = intern ("file-error"); |
3767 | staticpro (&Qfile_error); | |
3768 | Qfile_already_exists = intern("file-already-exists"); | |
3769 | staticpro (&Qfile_already_exists); | |
3770 | ||
4c3c22f3 RS |
3771 | #ifdef MSDOS |
3772 | Qfind_buffer_file_type = intern ("find-buffer-file-type"); | |
3773 | staticpro (&Qfind_buffer_file_type); | |
3774 | #endif | |
3775 | ||
d6a3cc15 RS |
3776 | Qcar_less_than_car = intern ("car-less-than-car"); |
3777 | staticpro (&Qcar_less_than_car); | |
3778 | ||
570d7624 JB |
3779 | Fput (Qfile_error, Qerror_conditions, |
3780 | Fcons (Qfile_error, Fcons (Qerror, Qnil))); | |
3781 | Fput (Qfile_error, Qerror_message, | |
3782 | build_string ("File error")); | |
3783 | ||
3784 | Fput (Qfile_already_exists, Qerror_conditions, | |
3785 | Fcons (Qfile_already_exists, | |
3786 | Fcons (Qfile_error, Fcons (Qerror, Qnil)))); | |
3787 | Fput (Qfile_already_exists, Qerror_message, | |
3788 | build_string ("File already exists")); | |
3789 | ||
3790 | DEFVAR_BOOL ("insert-default-directory", &insert_default_directory, | |
3791 | "*Non-nil means when reading a filename start with default dir in minibuffer."); | |
3792 | insert_default_directory = 1; | |
3793 | ||
3794 | DEFVAR_BOOL ("vms-stmlf-recfm", &vms_stmlf_recfm, | |
3795 | "*Non-nil means write new files with record format `stmlf'.\n\ | |
3796 | nil means use format `var'. This variable is meaningful only on VMS."); | |
3797 | vms_stmlf_recfm = 0; | |
3798 | ||
1d1826db RS |
3799 | DEFVAR_LISP ("file-name-handler-alist", &Vfile_name_handler_alist, |
3800 | "*Alist of elements (REGEXP . HANDLER) for file names handled specially.\n\ | |
3801 | If a file name matches REGEXP, then all I/O on that file is done by calling\n\ | |
3802 | HANDLER.\n\ | |
3803 | \n\ | |
3804 | The first argument given to HANDLER is the name of the I/O primitive\n\ | |
3805 | to be handled; the remaining arguments are the arguments that were\n\ | |
3806 | passed to that primitive. For example, if you do\n\ | |
3807 | (file-exists-p FILENAME)\n\ | |
3808 | and FILENAME is handled by HANDLER, then HANDLER is called like this:\n\ | |
642ef245 JB |
3809 | (funcall HANDLER 'file-exists-p FILENAME)\n\ |
3810 | The function `find-file-name-handler' checks this list for a handler\n\ | |
3811 | for its argument."); | |
09121adc RS |
3812 | Vfile_name_handler_alist = Qnil; |
3813 | ||
d6a3cc15 | 3814 | DEFVAR_LISP ("after-insert-file-functions", &Vafter_insert_file_functions, |
246cfea5 RS |
3815 | "A list of functions to be called at the end of `insert-file-contents'.\n\ |
3816 | Each is passed one argument, the number of bytes inserted. It should return\n\ | |
3817 | the new byte count, and leave point the same. If `insert-file-contents' is\n\ | |
3818 | intercepted by a handler from `file-name-handler-alist', that handler is\n\ | |
d6a3cc15 RS |
3819 | responsible for calling the after-insert-file-functions if appropriate."); |
3820 | Vafter_insert_file_functions = Qnil; | |
3821 | ||
3822 | DEFVAR_LISP ("write-region-annotate-functions", &Vwrite_region_annotate_functions, | |
246cfea5 RS |
3823 | "A list of functions to be called at the start of `write-region'.\n\ |
3824 | Each is passed two arguments, START and END as for `write-region'. It should\n\ | |
3825 | return a list of pairs (POSITION . STRING) of strings to be effectively\n\ | |
3826 | inserted at the specified positions of the file being written (1 means to\n\ | |
3827 | insert before the first byte written). The POSITIONs must be sorted into\n\ | |
3828 | increasing order. If there are several functions in the list, the several\n\ | |
d6a3cc15 RS |
3829 | lists are merged destructively."); |
3830 | Vwrite_region_annotate_functions = Qnil; | |
3831 | ||
642ef245 | 3832 | defsubr (&Sfind_file_name_handler); |
570d7624 JB |
3833 | defsubr (&Sfile_name_directory); |
3834 | defsubr (&Sfile_name_nondirectory); | |
642ef245 | 3835 | defsubr (&Sunhandled_file_name_directory); |
570d7624 JB |
3836 | defsubr (&Sfile_name_as_directory); |
3837 | defsubr (&Sdirectory_file_name); | |
3838 | defsubr (&Smake_temp_name); | |
3839 | defsubr (&Sexpand_file_name); | |
3840 | defsubr (&Ssubstitute_in_file_name); | |
3841 | defsubr (&Scopy_file); | |
9bbe01fb | 3842 | defsubr (&Smake_directory_internal); |
aa734e17 | 3843 | defsubr (&Sdelete_directory); |
570d7624 JB |
3844 | defsubr (&Sdelete_file); |
3845 | defsubr (&Srename_file); | |
3846 | defsubr (&Sadd_name_to_file); | |
3847 | #ifdef S_IFLNK | |
3848 | defsubr (&Smake_symbolic_link); | |
3849 | #endif /* S_IFLNK */ | |
3850 | #ifdef VMS | |
3851 | defsubr (&Sdefine_logical_name); | |
3852 | #endif /* VMS */ | |
3853 | #ifdef HPUX_NET | |
3854 | defsubr (&Ssysnetunam); | |
3855 | #endif /* HPUX_NET */ | |
3856 | defsubr (&Sfile_name_absolute_p); | |
3857 | defsubr (&Sfile_exists_p); | |
3858 | defsubr (&Sfile_executable_p); | |
3859 | defsubr (&Sfile_readable_p); | |
3860 | defsubr (&Sfile_writable_p); | |
3861 | defsubr (&Sfile_symlink_p); | |
3862 | defsubr (&Sfile_directory_p); | |
b72dea2a | 3863 | defsubr (&Sfile_accessible_directory_p); |
570d7624 JB |
3864 | defsubr (&Sfile_modes); |
3865 | defsubr (&Sset_file_modes); | |
c24e9a53 RS |
3866 | defsubr (&Sset_default_file_modes); |
3867 | defsubr (&Sdefault_file_modes); | |
570d7624 JB |
3868 | defsubr (&Sfile_newer_than_file_p); |
3869 | defsubr (&Sinsert_file_contents); | |
3870 | defsubr (&Swrite_region); | |
d6a3cc15 | 3871 | defsubr (&Scar_less_than_car); |
570d7624 JB |
3872 | defsubr (&Sverify_visited_file_modtime); |
3873 | defsubr (&Sclear_visited_file_modtime); | |
f5d5eccf | 3874 | defsubr (&Svisited_file_modtime); |
570d7624 JB |
3875 | defsubr (&Sset_visited_file_modtime); |
3876 | defsubr (&Sdo_auto_save); | |
3877 | defsubr (&Sset_buffer_auto_saved); | |
b60247d9 | 3878 | defsubr (&Sclear_buffer_auto_save_failure); |
570d7624 JB |
3879 | defsubr (&Srecent_auto_save_p); |
3880 | ||
3881 | defsubr (&Sread_file_name_internal); | |
3882 | defsubr (&Sread_file_name); | |
85ffea93 | 3883 | |
483a2e10 | 3884 | #ifdef unix |
85ffea93 | 3885 | defsubr (&Sunix_sync); |
483a2e10 | 3886 | #endif |
570d7624 | 3887 | } |