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 | |
29beb080 RS |
25 | #ifdef HAVE_UNISTD_H |
26 | #include <unistd.h> | |
27 | #endif | |
28 | ||
f73b0ada BF |
29 | #if !defined (S_ISLNK) && defined (S_IFLNK) |
30 | # define S_ISLNK(m) (((m) & S_IFMT) == S_IFLNK) | |
31 | #endif | |
32 | ||
33 | #if !defined (S_ISREG) && defined (S_IFREG) | |
34 | # define S_ISREG(m) (((m) & S_IFMT) == S_IFREG) | |
35 | #endif | |
36 | ||
bfb61299 | 37 | #ifdef VMS |
de5bf5d3 | 38 | #include "vms-pwd.h" |
bfb61299 | 39 | #else |
570d7624 | 40 | #include <pwd.h> |
bfb61299 JB |
41 | #endif |
42 | ||
4c3c22f3 RS |
43 | #ifdef MSDOS |
44 | #include "msdos.h" | |
45 | #include <sys/param.h> | |
46 | #endif | |
47 | ||
570d7624 | 48 | #include <ctype.h> |
bfb61299 JB |
49 | |
50 | #ifdef VMS | |
3d9f5ce2 | 51 | #include "vmsdir.h" |
bfb61299 JB |
52 | #include <perror.h> |
53 | #include <stddef.h> | |
54 | #include <string.h> | |
bfb61299 JB |
55 | #endif |
56 | ||
570d7624 JB |
57 | #include <errno.h> |
58 | ||
bfb61299 | 59 | #ifndef vax11c |
570d7624 | 60 | extern int errno; |
570d7624 JB |
61 | #endif |
62 | ||
ce97267f | 63 | extern char *strerror (); |
570d7624 JB |
64 | |
65 | #ifdef APOLLO | |
66 | #include <sys/time.h> | |
67 | #endif | |
68 | ||
6e23c83e JB |
69 | #ifndef USG |
70 | #ifndef VMS | |
71 | #ifndef BSD4_1 | |
5e570b75 | 72 | #ifndef WINDOWSNT |
6e23c83e JB |
73 | #define HAVE_FSYNC |
74 | #endif | |
75 | #endif | |
76 | #endif | |
5e570b75 | 77 | #endif |
6e23c83e | 78 | |
570d7624 | 79 | #include "lisp.h" |
8d4e077b | 80 | #include "intervals.h" |
570d7624 JB |
81 | #include "buffer.h" |
82 | #include "window.h" | |
83 | ||
5e570b75 RS |
84 | #ifdef WINDOWSNT |
85 | #define NOMINMAX 1 | |
86 | #include <windows.h> | |
87 | #include <stdlib.h> | |
88 | #include <fcntl.h> | |
89 | #endif /* not WINDOWSNT */ | |
90 | ||
570d7624 | 91 | #ifdef VMS |
570d7624 JB |
92 | #include <file.h> |
93 | #include <rmsdef.h> | |
94 | #include <fab.h> | |
95 | #include <nam.h> | |
96 | #endif | |
97 | ||
de5bf5d3 | 98 | #include "systime.h" |
570d7624 JB |
99 | |
100 | #ifdef HPUX | |
101 | #include <netio.h> | |
9b7828a5 | 102 | #ifndef HPUX8 |
47e7b9e5 | 103 | #ifndef HPUX9 |
570d7624 JB |
104 | #include <errnet.h> |
105 | #endif | |
9b7828a5 | 106 | #endif |
47e7b9e5 | 107 | #endif |
570d7624 JB |
108 | |
109 | #ifndef O_WRONLY | |
110 | #define O_WRONLY 1 | |
111 | #endif | |
112 | ||
4018b5ef RS |
113 | #ifndef O_RDONLY |
114 | #define O_RDONLY 0 | |
115 | #endif | |
116 | ||
570d7624 JB |
117 | #define min(a, b) ((a) < (b) ? (a) : (b)) |
118 | #define max(a, b) ((a) > (b) ? (a) : (b)) | |
119 | ||
120 | /* Nonzero during writing of auto-save files */ | |
121 | int auto_saving; | |
122 | ||
123 | /* Set by auto_save_1 to mode of original file so Fwrite_region will create | |
124 | a new file with the same mode as the original */ | |
125 | int auto_save_mode_bits; | |
126 | ||
32f4334d RS |
127 | /* Alist of elements (REGEXP . HANDLER) for file names |
128 | whose I/O is done with a special handler. */ | |
129 | Lisp_Object Vfile_name_handler_alist; | |
130 | ||
d6a3cc15 RS |
131 | /* Functions to be called to process text properties in inserted file. */ |
132 | Lisp_Object Vafter_insert_file_functions; | |
133 | ||
134 | /* Functions to be called to create text property annotations for file. */ | |
135 | Lisp_Object Vwrite_region_annotate_functions; | |
136 | ||
6fc6f94b RS |
137 | /* During build_annotations, each time an annotation function is called, |
138 | this holds the annotations made by the previous functions. */ | |
139 | Lisp_Object Vwrite_region_annotations_so_far; | |
140 | ||
e54d3b5d RS |
141 | /* File name in which we write a list of all our auto save files. */ |
142 | Lisp_Object Vauto_save_list_file_name; | |
143 | ||
570d7624 JB |
144 | /* Nonzero means, when reading a filename in the minibuffer, |
145 | start out by inserting the default directory into the minibuffer. */ | |
146 | int insert_default_directory; | |
147 | ||
148 | /* On VMS, nonzero means write new files with record format stmlf. | |
149 | Zero means use var format. */ | |
150 | int vms_stmlf_recfm; | |
151 | ||
a65970a0 RS |
152 | /* These variables describe handlers that have "already" had a chance |
153 | to handle the current operation. | |
154 | ||
155 | Vinhibit_file_name_handlers is a list of file name handlers. | |
156 | Vinhibit_file_name_operation is the operation being handled. | |
157 | If we try to handle that operation, we ignore those handlers. */ | |
158 | ||
82c2d839 | 159 | static Lisp_Object Vinhibit_file_name_handlers; |
a65970a0 | 160 | static Lisp_Object Vinhibit_file_name_operation; |
82c2d839 | 161 | |
570d7624 JB |
162 | Lisp_Object Qfile_error, Qfile_already_exists; |
163 | ||
15c65264 RS |
164 | Lisp_Object Qfile_name_history; |
165 | ||
d6a3cc15 RS |
166 | Lisp_Object Qcar_less_than_car; |
167 | ||
570d7624 JB |
168 | report_file_error (string, data) |
169 | char *string; | |
170 | Lisp_Object data; | |
171 | { | |
172 | Lisp_Object errstring; | |
173 | ||
a1f17b2d | 174 | errstring = build_string (strerror (errno)); |
570d7624 JB |
175 | |
176 | /* System error messages are capitalized. Downcase the initial | |
177 | unless it is followed by a slash. */ | |
178 | if (XSTRING (errstring)->data[1] != '/') | |
179 | XSTRING (errstring)->data[0] = DOWNCASE (XSTRING (errstring)->data[0]); | |
180 | ||
181 | while (1) | |
182 | Fsignal (Qfile_error, | |
183 | Fcons (build_string (string), Fcons (errstring, data))); | |
184 | } | |
b5148e85 RS |
185 | |
186 | close_file_unwind (fd) | |
187 | Lisp_Object fd; | |
188 | { | |
189 | close (XFASTINT (fd)); | |
190 | } | |
a1d2b64a RS |
191 | |
192 | /* Restore point, having saved it as a marker. */ | |
193 | ||
194 | restore_point_unwind (location) | |
195 | Lisp_Object location; | |
196 | { | |
197 | SET_PT (marker_position (location)); | |
198 | Fset_marker (location, Qnil, Qnil); | |
199 | } | |
570d7624 | 200 | \f |
0bf2eed2 RS |
201 | Lisp_Object Qexpand_file_name; |
202 | Lisp_Object Qdirectory_file_name; | |
203 | Lisp_Object Qfile_name_directory; | |
204 | Lisp_Object Qfile_name_nondirectory; | |
642ef245 | 205 | Lisp_Object Qunhandled_file_name_directory; |
0bf2eed2 | 206 | Lisp_Object Qfile_name_as_directory; |
32f4334d | 207 | Lisp_Object Qcopy_file; |
a6e6e718 | 208 | Lisp_Object Qmake_directory_internal; |
32f4334d RS |
209 | Lisp_Object Qdelete_directory; |
210 | Lisp_Object Qdelete_file; | |
211 | Lisp_Object Qrename_file; | |
212 | Lisp_Object Qadd_name_to_file; | |
213 | Lisp_Object Qmake_symbolic_link; | |
214 | Lisp_Object Qfile_exists_p; | |
215 | Lisp_Object Qfile_executable_p; | |
216 | Lisp_Object Qfile_readable_p; | |
217 | Lisp_Object Qfile_symlink_p; | |
218 | Lisp_Object Qfile_writable_p; | |
219 | Lisp_Object Qfile_directory_p; | |
220 | Lisp_Object Qfile_accessible_directory_p; | |
221 | Lisp_Object Qfile_modes; | |
222 | Lisp_Object Qset_file_modes; | |
223 | Lisp_Object Qfile_newer_than_file_p; | |
224 | Lisp_Object Qinsert_file_contents; | |
225 | Lisp_Object Qwrite_region; | |
226 | Lisp_Object Qverify_visited_file_modtime; | |
3ec46acd | 227 | Lisp_Object Qset_visited_file_modtime; |
32f4334d | 228 | |
49307295 KH |
229 | DEFUN ("find-file-name-handler", Ffind_file_name_handler, Sfind_file_name_handler, 2, 2, 0, |
230 | "Return FILENAME's handler function for OPERATION, if it has one.\n\ | |
642ef245 JB |
231 | Otherwise, return nil.\n\ |
232 | A file name is handled if one of the regular expressions in\n\ | |
82c2d839 | 233 | `file-name-handler-alist' matches it.\n\n\ |
a65970a0 RS |
234 | If OPERATION equals `inhibit-file-name-operation', then we ignore\n\ |
235 | any handlers that are members of `inhibit-file-name-handlers',\n\ | |
236 | but we still do run any other handlers. This lets handlers\n\ | |
82c2d839 | 237 | use the standard functions without calling themselves recursively.") |
49307295 KH |
238 | (filename, operation) |
239 | Lisp_Object filename, operation; | |
32f4334d | 240 | { |
642ef245 | 241 | /* This function must not munge the match data. */ |
a65970a0 | 242 | Lisp_Object chain, inhibited_handlers; |
642ef245 | 243 | |
e4432095 JB |
244 | CHECK_STRING (filename, 0); |
245 | ||
a65970a0 RS |
246 | if (EQ (operation, Vinhibit_file_name_operation)) |
247 | inhibited_handlers = Vinhibit_file_name_handlers; | |
248 | else | |
249 | inhibited_handlers = Qnil; | |
82c2d839 | 250 | |
93c30b5f | 251 | for (chain = Vfile_name_handler_alist; CONSP (chain); |
32f4334d RS |
252 | chain = XCONS (chain)->cdr) |
253 | { | |
254 | Lisp_Object elt; | |
255 | elt = XCONS (chain)->car; | |
93c30b5f | 256 | if (CONSP (elt)) |
32f4334d RS |
257 | { |
258 | Lisp_Object string; | |
259 | string = XCONS (elt)->car; | |
93c30b5f | 260 | if (STRINGP (string) && fast_string_match (string, filename) >= 0) |
a65970a0 RS |
261 | { |
262 | Lisp_Object handler, tem; | |
263 | ||
264 | handler = XCONS (elt)->cdr; | |
265 | tem = Fmemq (handler, inhibited_handlers); | |
266 | if (NILP (tem)) | |
267 | return handler; | |
268 | } | |
32f4334d | 269 | } |
642ef245 JB |
270 | |
271 | QUIT; | |
32f4334d RS |
272 | } |
273 | return Qnil; | |
274 | } | |
275 | \f | |
570d7624 JB |
276 | DEFUN ("file-name-directory", Ffile_name_directory, Sfile_name_directory, |
277 | 1, 1, 0, | |
278 | "Return the directory component in file name NAME.\n\ | |
279 | Return nil if NAME does not include a directory.\n\ | |
280 | Otherwise return a directory spec.\n\ | |
281 | Given a Unix syntax file name, returns a string ending in slash;\n\ | |
282 | on VMS, perhaps instead a string ending in `:', `]' or `>'.") | |
283 | (file) | |
284 | Lisp_Object file; | |
285 | { | |
286 | register unsigned char *beg; | |
287 | register unsigned char *p; | |
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. */ | |
49307295 | 294 | handler = Ffind_file_name_handler (file, Qfile_name_directory); |
0bf2eed2 RS |
295 | if (!NILP (handler)) |
296 | return call2 (handler, Qfile_name_directory, file); | |
297 | ||
4c3c22f3 RS |
298 | #ifdef FILE_SYSTEM_CASE |
299 | file = FILE_SYSTEM_CASE (file); | |
300 | #endif | |
570d7624 JB |
301 | beg = XSTRING (file)->data; |
302 | p = beg + XSTRING (file)->size; | |
303 | ||
5e570b75 | 304 | while (p != beg && !IS_ANY_SEP (p[-1]) |
570d7624 JB |
305 | #ifdef VMS |
306 | && p[-1] != ':' && p[-1] != ']' && p[-1] != '>' | |
307 | #endif /* VMS */ | |
4c3c22f3 | 308 | #ifdef MSDOS |
a5a1cc06 | 309 | && p[-1] != ':' && p[-1] != '\\' |
4c3c22f3 | 310 | #endif |
570d7624 JB |
311 | ) p--; |
312 | ||
313 | if (p == beg) | |
314 | return Qnil; | |
5e570b75 | 315 | #ifdef DOS_NT |
4c3c22f3 | 316 | /* Expansion of "c:" to drive and default directory. */ |
5e570b75 | 317 | /* (NT does the right thing.) */ |
4c3c22f3 RS |
318 | if (p == beg + 2 && beg[1] == ':') |
319 | { | |
320 | int drive = (*beg) - 'a'; | |
321 | /* MAXPATHLEN+1 is guaranteed to be enough space for getdefdir. */ | |
322 | unsigned char *res = alloca (MAXPATHLEN + 5); | |
5e570b75 RS |
323 | unsigned char *res1; |
324 | #ifdef WINDOWSNT | |
325 | res1 = res; | |
326 | /* The NT version places the drive letter at the beginning already. */ | |
327 | #else /* not WINDOWSNT */ | |
328 | /* On MSDOG we must put the drive letter in by hand. */ | |
329 | res1 = res + 2; | |
330 | #endif /* not WINDOWSNT */ | |
331 | if (getdefdir (drive + 1, res)) | |
4c3c22f3 | 332 | { |
5e570b75 | 333 | #ifdef MSDOS |
4c3c22f3 RS |
334 | res[0] = drive + 'a'; |
335 | res[1] = ':'; | |
5e570b75 RS |
336 | #endif /* MSDOS */ |
337 | if (IS_DIRECTORY_SEP (res[strlen (res) - 1])) | |
4c3c22f3 RS |
338 | strcat (res, "/"); |
339 | beg = res; | |
340 | p = beg + strlen (beg); | |
341 | } | |
342 | } | |
5e570b75 | 343 | #endif /* DOS_NT */ |
570d7624 JB |
344 | return make_string (beg, p - beg); |
345 | } | |
346 | ||
347 | DEFUN ("file-name-nondirectory", Ffile_name_nondirectory, Sfile_name_nondirectory, | |
348 | 1, 1, 0, | |
349 | "Return file name NAME sans its directory.\n\ | |
350 | For example, in a Unix-syntax file name,\n\ | |
351 | this is everything after the last slash,\n\ | |
352 | or the entire name if it contains no slash.") | |
353 | (file) | |
354 | Lisp_Object file; | |
355 | { | |
356 | register unsigned char *beg, *p, *end; | |
0bf2eed2 | 357 | Lisp_Object handler; |
570d7624 JB |
358 | |
359 | CHECK_STRING (file, 0); | |
360 | ||
0bf2eed2 RS |
361 | /* If the file name has special constructs in it, |
362 | call the corresponding file handler. */ | |
49307295 | 363 | handler = Ffind_file_name_handler (file, Qfile_name_nondirectory); |
0bf2eed2 RS |
364 | if (!NILP (handler)) |
365 | return call2 (handler, Qfile_name_nondirectory, file); | |
366 | ||
570d7624 JB |
367 | beg = XSTRING (file)->data; |
368 | end = p = beg + XSTRING (file)->size; | |
369 | ||
5e570b75 | 370 | while (p != beg && !IS_ANY_SEP (p[-1]) |
570d7624 JB |
371 | #ifdef VMS |
372 | && p[-1] != ':' && p[-1] != ']' && p[-1] != '>' | |
373 | #endif /* VMS */ | |
4c3c22f3 | 374 | #ifdef MSDOS |
5e570b75 | 375 | && p[-1] != ':' |
4c3c22f3 | 376 | #endif |
570d7624 JB |
377 | ) p--; |
378 | ||
379 | return make_string (p, end - p); | |
380 | } | |
642ef245 JB |
381 | |
382 | DEFUN ("unhandled-file-name-directory", Funhandled_file_name_directory, Sunhandled_file_name_directory, 1, 1, 0, | |
383 | "Return a directly usable directory name somehow associated with FILENAME.\n\ | |
384 | A `directly usable' directory name is one that may be used without the\n\ | |
385 | intervention of any file handler.\n\ | |
386 | If FILENAME is a directly usable file itself, return\n\ | |
387 | (file-name-directory FILENAME).\n\ | |
388 | The `call-process' and `start-process' functions use this function to\n\ | |
389 | get a current directory to run processes in.") | |
390 | (filename) | |
391 | Lisp_Object filename; | |
392 | { | |
393 | Lisp_Object handler; | |
394 | ||
395 | /* If the file name has special constructs in it, | |
396 | call the corresponding file handler. */ | |
49307295 | 397 | handler = Ffind_file_name_handler (filename, Qunhandled_file_name_directory); |
642ef245 JB |
398 | if (!NILP (handler)) |
399 | return call2 (handler, Qunhandled_file_name_directory, filename); | |
400 | ||
401 | return Ffile_name_directory (filename); | |
402 | } | |
403 | ||
570d7624 JB |
404 | \f |
405 | char * | |
406 | file_name_as_directory (out, in) | |
407 | char *out, *in; | |
408 | { | |
409 | int size = strlen (in) - 1; | |
410 | ||
411 | strcpy (out, in); | |
412 | ||
413 | #ifdef VMS | |
414 | /* Is it already a directory string? */ | |
415 | if (in[size] == ':' || in[size] == ']' || in[size] == '>') | |
416 | return out; | |
417 | /* Is it a VMS directory file name? If so, hack VMS syntax. */ | |
418 | else if (! index (in, '/') | |
419 | && ((size > 3 && ! strcmp (&in[size - 3], ".DIR")) | |
420 | || (size > 3 && ! strcmp (&in[size - 3], ".dir")) | |
421 | || (size > 5 && (! strncmp (&in[size - 5], ".DIR", 4) | |
422 | || ! strncmp (&in[size - 5], ".dir", 4)) | |
423 | && (in[size - 1] == '.' || in[size - 1] == ';') | |
424 | && in[size] == '1'))) | |
425 | { | |
426 | register char *p, *dot; | |
427 | char brack; | |
428 | ||
429 | /* x.dir -> [.x] | |
430 | dir:x.dir --> dir:[x] | |
431 | dir:[x]y.dir --> dir:[x.y] */ | |
432 | p = in + size; | |
433 | while (p != in && *p != ':' && *p != '>' && *p != ']') p--; | |
434 | if (p != in) | |
435 | { | |
436 | strncpy (out, in, p - in); | |
437 | out[p - in] = '\0'; | |
438 | if (*p == ':') | |
439 | { | |
440 | brack = ']'; | |
441 | strcat (out, ":["); | |
442 | } | |
443 | else | |
444 | { | |
445 | brack = *p; | |
446 | strcat (out, "."); | |
447 | } | |
448 | p++; | |
449 | } | |
450 | else | |
451 | { | |
452 | brack = ']'; | |
453 | strcpy (out, "[."); | |
454 | } | |
bfb61299 JB |
455 | dot = index (p, '.'); |
456 | if (dot) | |
570d7624 JB |
457 | { |
458 | /* blindly remove any extension */ | |
459 | size = strlen (out) + (dot - p); | |
460 | strncat (out, p, dot - p); | |
461 | } | |
462 | else | |
463 | { | |
464 | strcat (out, p); | |
465 | size = strlen (out); | |
466 | } | |
467 | out[size++] = brack; | |
468 | out[size] = '\0'; | |
469 | } | |
470 | #else /* not VMS */ | |
471 | /* For Unix syntax, Append a slash if necessary */ | |
4c3c22f3 | 472 | #ifdef MSDOS |
a5a1cc06 | 473 | if (out[size] != ':' && out[size] != '/' && out[size] != '\\') |
5e570b75 RS |
474 | #else /* not MSDOS */ |
475 | if (!IS_ANY_SEP (out[size])) | |
476 | { | |
477 | out[size + 1] = DIRECTORY_SEP; | |
478 | out[size + 2] = '\0'; | |
479 | } | |
480 | #endif /* not MSDOS */ | |
570d7624 JB |
481 | #endif /* not VMS */ |
482 | return out; | |
483 | } | |
484 | ||
485 | DEFUN ("file-name-as-directory", Ffile_name_as_directory, | |
486 | Sfile_name_as_directory, 1, 1, 0, | |
487 | "Return a string representing file FILENAME interpreted as a directory.\n\ | |
488 | This operation exists because a directory is also a file, but its name as\n\ | |
489 | a directory is different from its name as a file.\n\ | |
490 | The result can be used as the value of `default-directory'\n\ | |
491 | or passed as second argument to `expand-file-name'.\n\ | |
492 | For a Unix-syntax file name, just appends a slash.\n\ | |
493 | On VMS, converts \"[X]FOO.DIR\" to \"[X.FOO]\", etc.") | |
494 | (file) | |
495 | Lisp_Object file; | |
496 | { | |
497 | char *buf; | |
0bf2eed2 | 498 | Lisp_Object handler; |
570d7624 JB |
499 | |
500 | CHECK_STRING (file, 0); | |
265a9e55 | 501 | if (NILP (file)) |
570d7624 | 502 | return Qnil; |
0bf2eed2 RS |
503 | |
504 | /* If the file name has special constructs in it, | |
505 | call the corresponding file handler. */ | |
49307295 | 506 | handler = Ffind_file_name_handler (file, Qfile_name_as_directory); |
0bf2eed2 RS |
507 | if (!NILP (handler)) |
508 | return call2 (handler, Qfile_name_as_directory, file); | |
509 | ||
570d7624 JB |
510 | buf = (char *) alloca (XSTRING (file)->size + 10); |
511 | return build_string (file_name_as_directory (buf, XSTRING (file)->data)); | |
512 | } | |
513 | \f | |
514 | /* | |
515 | * Convert from directory name to filename. | |
516 | * On VMS: | |
517 | * xyzzy:[mukesh.emacs] => xyzzy:[mukesh]emacs.dir.1 | |
518 | * xyzzy:[mukesh] => xyzzy:[000000]mukesh.dir.1 | |
519 | * On UNIX, it's simple: just make sure there is a terminating / | |
520 | ||
521 | * Value is nonzero if the string output is different from the input. | |
522 | */ | |
523 | ||
524 | directory_file_name (src, dst) | |
525 | char *src, *dst; | |
526 | { | |
527 | long slen; | |
528 | #ifdef VMS | |
529 | long rlen; | |
530 | char * ptr, * rptr; | |
531 | char bracket; | |
532 | struct FAB fab = cc$rms_fab; | |
533 | struct NAM nam = cc$rms_nam; | |
534 | char esa[NAM$C_MAXRSS]; | |
535 | #endif /* VMS */ | |
536 | ||
537 | slen = strlen (src); | |
538 | #ifdef VMS | |
539 | if (! index (src, '/') | |
540 | && (src[slen - 1] == ']' | |
541 | || src[slen - 1] == ':' | |
542 | || src[slen - 1] == '>')) | |
543 | { | |
544 | /* VMS style - convert [x.y.z] to [x.y]z, [x] to [000000]x */ | |
545 | fab.fab$l_fna = src; | |
546 | fab.fab$b_fns = slen; | |
547 | fab.fab$l_nam = &nam; | |
548 | fab.fab$l_fop = FAB$M_NAM; | |
549 | ||
550 | nam.nam$l_esa = esa; | |
551 | nam.nam$b_ess = sizeof esa; | |
552 | nam.nam$b_nop |= NAM$M_SYNCHK; | |
553 | ||
554 | /* We call SYS$PARSE to handle such things as [--] for us. */ | |
555 | if (SYS$PARSE(&fab, 0, 0) == RMS$_NORMAL) | |
556 | { | |
557 | slen = nam.nam$b_esl; | |
558 | if (esa[slen - 1] == ';' && esa[slen - 2] == '.') | |
559 | slen -= 2; | |
560 | esa[slen] = '\0'; | |
561 | src = esa; | |
562 | } | |
563 | if (src[slen - 1] != ']' && src[slen - 1] != '>') | |
564 | { | |
565 | /* what about when we have logical_name:???? */ | |
566 | if (src[slen - 1] == ':') | |
5e570b75 | 567 | { /* Xlate logical name and see what we get */ |
570d7624 JB |
568 | ptr = strcpy (dst, src); /* upper case for getenv */ |
569 | while (*ptr) | |
570 | { | |
571 | if ('a' <= *ptr && *ptr <= 'z') | |
572 | *ptr -= 040; | |
573 | ptr++; | |
574 | } | |
5e570b75 | 575 | dst[slen - 1] = 0; /* remove colon */ |
570d7624 JB |
576 | if (!(src = egetenv (dst))) |
577 | return 0; | |
578 | /* should we jump to the beginning of this procedure? | |
579 | Good points: allows us to use logical names that xlate | |
580 | to Unix names, | |
581 | Bad points: can be a problem if we just translated to a device | |
582 | name... | |
583 | For now, I'll punt and always expect VMS names, and hope for | |
584 | the best! */ | |
585 | slen = strlen (src); | |
586 | if (src[slen - 1] != ']' && src[slen - 1] != '>') | |
587 | { /* no recursion here! */ | |
588 | strcpy (dst, src); | |
589 | return 0; | |
590 | } | |
591 | } | |
592 | else | |
5e570b75 | 593 | { /* not a directory spec */ |
570d7624 JB |
594 | strcpy (dst, src); |
595 | return 0; | |
596 | } | |
597 | } | |
598 | bracket = src[slen - 1]; | |
599 | ||
600 | /* If bracket is ']' or '>', bracket - 2 is the corresponding | |
601 | opening bracket. */ | |
bfb61299 JB |
602 | ptr = index (src, bracket - 2); |
603 | if (ptr == 0) | |
570d7624 JB |
604 | { /* no opening bracket */ |
605 | strcpy (dst, src); | |
606 | return 0; | |
607 | } | |
608 | if (!(rptr = rindex (src, '.'))) | |
609 | rptr = ptr; | |
610 | slen = rptr - src; | |
611 | strncpy (dst, src, slen); | |
612 | dst[slen] = '\0'; | |
613 | if (*rptr == '.') | |
614 | { | |
615 | dst[slen++] = bracket; | |
616 | dst[slen] = '\0'; | |
617 | } | |
618 | else | |
619 | { | |
620 | /* If we have the top-level of a rooted directory (i.e. xx:[000000]), | |
621 | then translate the device and recurse. */ | |
622 | if (dst[slen - 1] == ':' | |
5e570b75 | 623 | && dst[slen - 2] != ':' /* skip decnet nodes */ |
570d7624 JB |
624 | && strcmp(src + slen, "[000000]") == 0) |
625 | { | |
626 | dst[slen - 1] = '\0'; | |
627 | if ((ptr = egetenv (dst)) | |
628 | && (rlen = strlen (ptr) - 1) > 0 | |
629 | && (ptr[rlen] == ']' || ptr[rlen] == '>') | |
630 | && ptr[rlen - 1] == '.') | |
631 | { | |
72b21817 RS |
632 | char * buf = (char *) alloca (strlen (ptr) + 1); |
633 | strcpy (buf, ptr); | |
634 | buf[rlen - 1] = ']'; | |
635 | buf[rlen] = '\0'; | |
636 | return directory_file_name (buf, dst); | |
570d7624 JB |
637 | } |
638 | else | |
639 | dst[slen - 1] = ':'; | |
640 | } | |
641 | strcat (dst, "[000000]"); | |
642 | slen += 8; | |
643 | } | |
644 | rptr++; | |
645 | rlen = strlen (rptr) - 1; | |
646 | strncat (dst, rptr, rlen); | |
647 | dst[slen + rlen] = '\0'; | |
648 | strcat (dst, ".DIR.1"); | |
649 | return 1; | |
650 | } | |
651 | #endif /* VMS */ | |
652 | /* Process as Unix format: just remove any final slash. | |
653 | But leave "/" unchanged; do not change it to "". */ | |
654 | strcpy (dst, src); | |
4c3c22f3 | 655 | if (slen > 1 |
5e570b75 RS |
656 | && IS_DIRECTORY_SEP (dst[slen - 1]) |
657 | && !IS_DEVICE_SEP (dst[slen - 2])) | |
570d7624 JB |
658 | dst[slen - 1] = 0; |
659 | return 1; | |
660 | } | |
661 | ||
662 | DEFUN ("directory-file-name", Fdirectory_file_name, Sdirectory_file_name, | |
663 | 1, 1, 0, | |
664 | "Returns the file name of the directory named DIR.\n\ | |
665 | This is the name of the file that holds the data for the directory DIR.\n\ | |
666 | This operation exists because a directory is also a file, but its name as\n\ | |
667 | a directory is different from its name as a file.\n\ | |
668 | In Unix-syntax, this function just removes the final slash.\n\ | |
669 | On VMS, given a VMS-syntax directory name such as \"[X.Y]\",\n\ | |
670 | it returns a file name such as \"[X]Y.DIR.1\".") | |
671 | (directory) | |
672 | Lisp_Object directory; | |
673 | { | |
674 | char *buf; | |
0bf2eed2 | 675 | Lisp_Object handler; |
570d7624 JB |
676 | |
677 | CHECK_STRING (directory, 0); | |
678 | ||
265a9e55 | 679 | if (NILP (directory)) |
570d7624 | 680 | return Qnil; |
0bf2eed2 RS |
681 | |
682 | /* If the file name has special constructs in it, | |
683 | call the corresponding file handler. */ | |
49307295 | 684 | handler = Ffind_file_name_handler (directory, Qdirectory_file_name); |
0bf2eed2 RS |
685 | if (!NILP (handler)) |
686 | return call2 (handler, Qdirectory_file_name, directory); | |
687 | ||
570d7624 JB |
688 | #ifdef VMS |
689 | /* 20 extra chars is insufficient for VMS, since we might perform a | |
690 | logical name translation. an equivalence string can be up to 255 | |
691 | chars long, so grab that much extra space... - sss */ | |
692 | buf = (char *) alloca (XSTRING (directory)->size + 20 + 255); | |
693 | #else | |
694 | buf = (char *) alloca (XSTRING (directory)->size + 20); | |
695 | #endif | |
696 | directory_file_name (XSTRING (directory)->data, buf); | |
697 | return build_string (buf); | |
698 | } | |
699 | ||
700 | DEFUN ("make-temp-name", Fmake_temp_name, Smake_temp_name, 1, 1, 0, | |
701 | "Generate temporary file name (string) starting with PREFIX (a string).\n\ | |
702 | The Emacs process number forms part of the result,\n\ | |
703 | so there is no danger of generating a name being used by another process.") | |
704 | (prefix) | |
705 | Lisp_Object prefix; | |
706 | { | |
707 | Lisp_Object val; | |
708 | val = concat2 (prefix, build_string ("XXXXXX")); | |
709 | mktemp (XSTRING (val)->data); | |
710 | return val; | |
711 | } | |
712 | \f | |
713 | DEFUN ("expand-file-name", Fexpand_file_name, Sexpand_file_name, 1, 2, 0, | |
714 | "Convert FILENAME to absolute, and canonicalize it.\n\ | |
715 | Second arg DEFAULT is directory to start with if FILENAME is relative\n\ | |
716 | (does not start with slash); if DEFAULT is nil or missing,\n\ | |
717 | the current buffer's value of default-directory is used.\n\ | |
b72dea2a JB |
718 | Path components that are `.' are removed, and \n\ |
719 | path components followed by `..' are removed, along with the `..' itself;\n\ | |
720 | note that these simplifications are done without checking the resulting\n\ | |
721 | paths in the file system.\n\ | |
722 | An initial `~/' expands to your home directory.\n\ | |
723 | An initial `~USER/' expands to USER's home directory.\n\ | |
570d7624 JB |
724 | See also the function `substitute-in-file-name'.") |
725 | (name, defalt) | |
726 | Lisp_Object name, defalt; | |
727 | { | |
728 | unsigned char *nm; | |
729 | ||
730 | register unsigned char *newdir, *p, *o; | |
731 | int tlen; | |
732 | unsigned char *target; | |
733 | struct passwd *pw; | |
570d7624 JB |
734 | #ifdef VMS |
735 | unsigned char * colon = 0; | |
736 | unsigned char * close = 0; | |
737 | unsigned char * slash = 0; | |
738 | unsigned char * brack = 0; | |
739 | int lbrack = 0, rbrack = 0; | |
740 | int dots = 0; | |
741 | #endif /* VMS */ | |
5e570b75 RS |
742 | #ifdef DOS_NT |
743 | /* Demacs 1.1.2 91/10/20 Manabu Higashida */ | |
4c3c22f3 RS |
744 | int drive = -1; |
745 | int relpath = 0; | |
746 | unsigned char *tmp, *defdir; | |
5e570b75 | 747 | #endif /* DOS_NT */ |
0bf2eed2 | 748 | Lisp_Object handler; |
570d7624 JB |
749 | |
750 | CHECK_STRING (name, 0); | |
751 | ||
0bf2eed2 RS |
752 | /* If the file name has special constructs in it, |
753 | call the corresponding file handler. */ | |
49307295 | 754 | handler = Ffind_file_name_handler (name, Qexpand_file_name); |
0bf2eed2 | 755 | if (!NILP (handler)) |
09121adc | 756 | return call3 (handler, Qexpand_file_name, name, defalt); |
0bf2eed2 | 757 | |
4ad827c5 RS |
758 | /* Use the buffer's default-directory if DEFALT is omitted. */ |
759 | if (NILP (defalt)) | |
760 | defalt = current_buffer->directory; | |
761 | CHECK_STRING (defalt, 1); | |
762 | ||
5e570b75 RS |
763 | o = XSTRING (defalt)->data; |
764 | ||
f14b1c68 JB |
765 | /* Make sure DEFALT is properly expanded. |
766 | It would be better to do this down below where we actually use | |
767 | defalt. Unfortunately, calling Fexpand_file_name recursively | |
768 | could invoke GC, and the strings might be relocated. This would | |
769 | be annoying because we have pointers into strings lying around | |
770 | that would need adjusting, and people would add new pointers to | |
771 | the code and forget to adjust them, resulting in intermittent bugs. | |
4ad827c5 RS |
772 | Putting this call here avoids all that crud. |
773 | ||
774 | The EQ test avoids infinite recursion. */ | |
775 | if (! NILP (defalt) && !EQ (defalt, name) | |
776 | /* This saves time in a common case. */ | |
5e570b75 RS |
777 | && ! (XSTRING (defalt)->size >= 3 |
778 | && IS_DIRECTORY_SEP (XSTRING (defalt)->data[0]) | |
779 | && IS_DEVICE_SEP (XSTRING (defalt)->data[1]))) | |
f14b1c68 JB |
780 | { |
781 | struct gcpro gcpro1; | |
782 | ||
783 | GCPRO1 (name); | |
784 | defalt = Fexpand_file_name (defalt, Qnil); | |
785 | UNGCPRO; | |
786 | } | |
787 | ||
570d7624 JB |
788 | #ifdef VMS |
789 | /* Filenames on VMS are always upper case. */ | |
790 | name = Fupcase (name); | |
791 | #endif | |
4c3c22f3 RS |
792 | #ifdef FILE_SYSTEM_CASE |
793 | name = FILE_SYSTEM_CASE (name); | |
794 | #endif | |
570d7624 JB |
795 | |
796 | nm = XSTRING (name)->data; | |
797 | ||
4c3c22f3 | 798 | #ifdef MSDOS |
a5a1cc06 RS |
799 | /* First map all backslashes to slashes. */ |
800 | dostounix_filename (nm = strcpy (alloca (strlen (nm) + 1), nm)); | |
5e570b75 | 801 | #endif |
a5a1cc06 | 802 | |
5e570b75 | 803 | #ifdef DOS_NT |
a5a1cc06 | 804 | /* Now strip drive name. */ |
4c3c22f3 RS |
805 | { |
806 | unsigned char *colon = rindex (nm, ':'); | |
807 | if (colon) | |
808 | if (nm == colon) | |
809 | nm++; | |
810 | else | |
811 | { | |
812 | drive = tolower (colon[-1]) - 'a'; | |
813 | nm = colon + 1; | |
5e570b75 | 814 | if (!IS_DIRECTORY_SEP (*nm)) |
4c3c22f3 RS |
815 | { |
816 | defdir = alloca (MAXPATHLEN + 1); | |
817 | relpath = getdefdir (drive + 1, defdir); | |
818 | } | |
5e570b75 | 819 | } |
4c3c22f3 | 820 | } |
5e570b75 | 821 | #endif /* DOS_NT */ |
4c3c22f3 | 822 | |
570d7624 JB |
823 | /* If nm is absolute, flush ...// and detect /./ and /../. |
824 | If no /./ or /../ we can return right away. */ | |
825 | if ( | |
5e570b75 | 826 | IS_DIRECTORY_SEP (nm[0]) |
570d7624 JB |
827 | #ifdef VMS |
828 | || index (nm, ':') | |
829 | #endif /* VMS */ | |
830 | ) | |
831 | { | |
f14b1c68 JB |
832 | /* If it turns out that the filename we want to return is just a |
833 | suffix of FILENAME, we don't need to go through and edit | |
834 | things; we just need to construct a new string using data | |
835 | starting at the middle of FILENAME. If we set lose to a | |
836 | non-zero value, that means we've discovered that we can't do | |
837 | that cool trick. */ | |
838 | int lose = 0; | |
839 | ||
570d7624 | 840 | p = nm; |
570d7624 JB |
841 | while (*p) |
842 | { | |
c77d647e JB |
843 | /* Since we know the path is absolute, we can assume that each |
844 | element starts with a "/". */ | |
845 | ||
846 | /* "//" anywhere isn't necessarily hairy; we just start afresh | |
847 | with the second slash. */ | |
5e570b75 | 848 | if (IS_DIRECTORY_SEP (p[0]) && IS_DIRECTORY_SEP (p[1]) |
570d7624 JB |
849 | #ifdef APOLLO |
850 | /* // at start of filename is meaningful on Apollo system */ | |
851 | && nm != p | |
852 | #endif /* APOLLO */ | |
5e570b75 RS |
853 | #ifdef WINDOWSNT |
854 | /* \\ or // at the start of a pathname is meaningful on NT. */ | |
855 | && nm != p | |
856 | #endif /* WINDOWSNT */ | |
570d7624 JB |
857 | ) |
858 | nm = p + 1; | |
c77d647e JB |
859 | |
860 | /* "~" is hairy as the start of any path element. */ | |
5e570b75 | 861 | if (IS_DIRECTORY_SEP (p[0]) && p[1] == '~') |
570d7624 | 862 | nm = p + 1, lose = 1; |
c77d647e JB |
863 | |
864 | /* "." and ".." are hairy. */ | |
5e570b75 | 865 | if (IS_DIRECTORY_SEP (p[0]) |
c77d647e | 866 | && p[1] == '.' |
5e570b75 | 867 | && (IS_DIRECTORY_SEP (p[2]) |
c77d647e | 868 | || p[2] == 0 |
5e570b75 | 869 | || (p[2] == '.' && (IS_DIRECTORY_SEP (p[3]) |
c77d647e | 870 | || p[3] == 0)))) |
570d7624 JB |
871 | lose = 1; |
872 | #ifdef VMS | |
873 | if (p[0] == '\\') | |
874 | lose = 1; | |
875 | if (p[0] == '/') { | |
876 | /* if dev:[dir]/, move nm to / */ | |
877 | if (!slash && p > nm && (brack || colon)) { | |
878 | nm = (brack ? brack + 1 : colon + 1); | |
879 | lbrack = rbrack = 0; | |
880 | brack = 0; | |
881 | colon = 0; | |
882 | } | |
883 | slash = p; | |
884 | } | |
885 | if (p[0] == '-') | |
886 | #ifndef VMS4_4 | |
887 | /* VMS pre V4.4,convert '-'s in filenames. */ | |
888 | if (lbrack == rbrack) | |
889 | { | |
5e570b75 | 890 | if (dots < 2) /* this is to allow negative version numbers */ |
570d7624 JB |
891 | p[0] = '_'; |
892 | } | |
893 | else | |
894 | #endif /* VMS4_4 */ | |
895 | if (lbrack > rbrack && | |
896 | ((p[-1] == '.' || p[-1] == '[' || p[-1] == '<') && | |
897 | (p[1] == '.' || p[1] == ']' || p[1] == '>'))) | |
898 | lose = 1; | |
899 | #ifndef VMS4_4 | |
900 | else | |
901 | p[0] = '_'; | |
902 | #endif /* VMS4_4 */ | |
903 | /* count open brackets, reset close bracket pointer */ | |
904 | if (p[0] == '[' || p[0] == '<') | |
905 | lbrack++, brack = 0; | |
906 | /* count close brackets, set close bracket pointer */ | |
907 | if (p[0] == ']' || p[0] == '>') | |
908 | rbrack++, brack = p; | |
909 | /* detect ][ or >< */ | |
910 | if ((p[0] == ']' || p[0] == '>') && (p[1] == '[' || p[1] == '<')) | |
911 | lose = 1; | |
912 | if ((p[0] == ':' || p[0] == ']' || p[0] == '>') && p[1] == '~') | |
913 | nm = p + 1, lose = 1; | |
914 | if (p[0] == ':' && (colon || slash)) | |
915 | /* if dev1:[dir]dev2:, move nm to dev2: */ | |
916 | if (brack) | |
917 | { | |
918 | nm = brack + 1; | |
919 | brack = 0; | |
920 | } | |
921 | /* if /pathname/dev:, move nm to dev: */ | |
922 | else if (slash) | |
923 | nm = slash + 1; | |
924 | /* if node::dev:, move colon following dev */ | |
925 | else if (colon && colon[-1] == ':') | |
926 | colon = p; | |
927 | /* if dev1:dev2:, move nm to dev2: */ | |
928 | else if (colon && colon[-1] != ':') | |
929 | { | |
930 | nm = colon + 1; | |
931 | colon = 0; | |
932 | } | |
933 | if (p[0] == ':' && !colon) | |
934 | { | |
935 | if (p[1] == ':') | |
936 | p++; | |
937 | colon = p; | |
938 | } | |
939 | if (lbrack == rbrack) | |
940 | if (p[0] == ';') | |
941 | dots = 2; | |
942 | else if (p[0] == '.') | |
943 | dots++; | |
944 | #endif /* VMS */ | |
945 | p++; | |
946 | } | |
947 | if (!lose) | |
948 | { | |
949 | #ifdef VMS | |
950 | if (index (nm, '/')) | |
951 | return build_string (sys_translate_unix (nm)); | |
952 | #endif /* VMS */ | |
5e570b75 | 953 | #ifndef DOS_NT |
570d7624 JB |
954 | if (nm == XSTRING (name)->data) |
955 | return name; | |
956 | return build_string (nm); | |
5e570b75 | 957 | #endif /* not DOS_NT */ |
570d7624 JB |
958 | } |
959 | } | |
960 | ||
961 | /* Now determine directory to start with and put it in newdir */ | |
962 | ||
963 | newdir = 0; | |
964 | ||
965 | if (nm[0] == '~') /* prefix ~ */ | |
c77d647e | 966 | { |
5e570b75 | 967 | if (IS_DIRECTORY_SEP (nm[1]) |
570d7624 | 968 | #ifdef VMS |
c77d647e | 969 | || nm[1] == ':' |
5e570b75 | 970 | #endif /* VMS */ |
c77d647e JB |
971 | || nm[1] == 0) /* ~ by itself */ |
972 | { | |
973 | if (!(newdir = (unsigned char *) egetenv ("HOME"))) | |
974 | newdir = (unsigned char *) ""; | |
5e570b75 | 975 | #ifdef DOS_NT |
4c3c22f3 RS |
976 | dostounix_filename (newdir); |
977 | #endif | |
c77d647e | 978 | nm++; |
570d7624 | 979 | #ifdef VMS |
c77d647e | 980 | nm++; /* Don't leave the slash in nm. */ |
5e570b75 | 981 | #endif /* VMS */ |
c77d647e JB |
982 | } |
983 | else /* ~user/filename */ | |
984 | { | |
5e570b75 | 985 | for (p = nm; *p && (!IS_DIRECTORY_SEP (*p) |
570d7624 | 986 | #ifdef VMS |
c77d647e | 987 | && *p != ':' |
5e570b75 | 988 | #endif /* VMS */ |
c77d647e JB |
989 | ); p++); |
990 | o = (unsigned char *) alloca (p - nm + 1); | |
991 | bcopy ((char *) nm, o, p - nm); | |
992 | o [p - nm] = 0; | |
993 | ||
5e570b75 RS |
994 | #ifdef WINDOWSNT |
995 | newdir = (unsigned char *) egetenv ("HOME"); | |
996 | dostounix_filename (newdir); | |
997 | #else /* not WINDOWSNT */ | |
c77d647e JB |
998 | pw = (struct passwd *) getpwnam (o + 1); |
999 | if (pw) | |
1000 | { | |
1001 | newdir = (unsigned char *) pw -> pw_dir; | |
570d7624 | 1002 | #ifdef VMS |
c77d647e | 1003 | nm = p + 1; /* skip the terminator */ |
570d7624 | 1004 | #else |
c77d647e | 1005 | nm = p; |
5e570b75 | 1006 | #endif /* VMS */ |
c77d647e | 1007 | } |
5e570b75 | 1008 | #endif /* not WINDOWSNT */ |
e5d77022 | 1009 | |
c77d647e JB |
1010 | /* If we don't find a user of that name, leave the name |
1011 | unchanged; don't move nm forward to p. */ | |
1012 | } | |
1013 | } | |
570d7624 | 1014 | |
5e570b75 | 1015 | if (!IS_ANY_SEP (nm[0]) |
570d7624 JB |
1016 | #ifdef VMS |
1017 | && !index (nm, ':') | |
1018 | #endif /* not VMS */ | |
5e570b75 | 1019 | #ifdef DOS_NT |
4c3c22f3 | 1020 | && drive == -1 |
5e570b75 | 1021 | #endif /* DOS_NT */ |
570d7624 JB |
1022 | && !newdir) |
1023 | { | |
570d7624 JB |
1024 | newdir = XSTRING (defalt)->data; |
1025 | } | |
1026 | ||
5e570b75 | 1027 | #ifdef DOS_NT |
4c3c22f3 RS |
1028 | if (newdir == 0 && relpath) |
1029 | newdir = defdir; | |
5e570b75 | 1030 | #endif /* DOS_NT */ |
bfb61299 JB |
1031 | if (newdir != 0) |
1032 | { | |
1033 | /* Get rid of any slash at the end of newdir. */ | |
1034 | int length = strlen (newdir); | |
eabf01d4 RS |
1035 | /* Adding `length > 1 &&' makes ~ expand into / when homedir |
1036 | is the root dir. People disagree about whether that is right. | |
1037 | Anyway, we can't take the risk of this change now. */ | |
4c3c22f3 RS |
1038 | #ifdef MSDOS |
1039 | if (newdir[1] != ':' && length > 1) | |
1040 | #endif | |
5e570b75 | 1041 | if (IS_DIRECTORY_SEP (newdir[length - 1])) |
bfb61299 JB |
1042 | { |
1043 | unsigned char *temp = (unsigned char *) alloca (length); | |
1044 | bcopy (newdir, temp, length - 1); | |
1045 | temp[length - 1] = 0; | |
1046 | newdir = temp; | |
1047 | } | |
1048 | tlen = length + 1; | |
1049 | } | |
1050 | else | |
1051 | tlen = 0; | |
570d7624 | 1052 | |
bfb61299 JB |
1053 | /* Now concatenate the directory and name to new space in the stack frame */ |
1054 | tlen += strlen (nm) + 1; | |
5e570b75 RS |
1055 | #ifdef DOS_NT |
1056 | /* Add reserved space for drive name. (The Microsoft x86 compiler | |
1057 | produces incorrect code if the following two lines are combined.) */ | |
1058 | target = (unsigned char *) alloca (tlen + 2); | |
1059 | target += 2; | |
1060 | #else /* not DOS_NT */ | |
570d7624 | 1061 | target = (unsigned char *) alloca (tlen); |
5e570b75 | 1062 | #endif /* not DOS_NT */ |
570d7624 JB |
1063 | *target = 0; |
1064 | ||
1065 | if (newdir) | |
1066 | { | |
1067 | #ifndef VMS | |
5e570b75 | 1068 | if (nm[0] == 0 || IS_DIRECTORY_SEP (nm[0])) |
570d7624 JB |
1069 | strcpy (target, newdir); |
1070 | else | |
1071 | #endif | |
c77d647e | 1072 | file_name_as_directory (target, newdir); |
570d7624 JB |
1073 | } |
1074 | ||
1075 | strcat (target, nm); | |
1076 | #ifdef VMS | |
1077 | if (index (target, '/')) | |
1078 | strcpy (target, sys_translate_unix (target)); | |
1079 | #endif /* VMS */ | |
1080 | ||
c77d647e | 1081 | /* Now canonicalize by removing /. and /foo/.. if they appear. */ |
570d7624 JB |
1082 | |
1083 | p = target; | |
1084 | o = target; | |
1085 | ||
1086 | while (*p) | |
1087 | { | |
1088 | #ifdef VMS | |
1089 | if (*p != ']' && *p != '>' && *p != '-') | |
1090 | { | |
1091 | if (*p == '\\') | |
1092 | p++; | |
1093 | *o++ = *p++; | |
1094 | } | |
1095 | else if ((p[0] == ']' || p[0] == '>') && p[0] == p[1] + 2) | |
1096 | /* brackets are offset from each other by 2 */ | |
1097 | { | |
1098 | p += 2; | |
1099 | if (*p != '.' && *p != '-' && o[-1] != '.') | |
1100 | /* convert [foo][bar] to [bar] */ | |
1101 | while (o[-1] != '[' && o[-1] != '<') | |
1102 | o--; | |
1103 | else if (*p == '-' && *o != '.') | |
1104 | *--p = '.'; | |
1105 | } | |
1106 | else if (p[0] == '-' && o[-1] == '.' && | |
1107 | (p[1] == '.' || p[1] == ']' || p[1] == '>')) | |
1108 | /* flush .foo.- ; leave - if stopped by '[' or '<' */ | |
1109 | { | |
1110 | do | |
1111 | o--; | |
1112 | while (o[-1] != '.' && o[-1] != '[' && o[-1] != '<'); | |
5e570b75 | 1113 | if (p[1] == '.') /* foo.-.bar ==> bar. */ |
570d7624 JB |
1114 | p += 2; |
1115 | else if (o[-1] == '.') /* '.foo.-]' ==> ']' */ | |
1116 | p++, o--; | |
1117 | /* else [foo.-] ==> [-] */ | |
1118 | } | |
1119 | else | |
1120 | { | |
1121 | #ifndef VMS4_4 | |
1122 | if (*p == '-' && | |
1123 | o[-1] != '[' && o[-1] != '<' && o[-1] != '.' && | |
1124 | p[1] != ']' && p[1] != '>' && p[1] != '.') | |
1125 | *p = '_'; | |
1126 | #endif /* VMS4_4 */ | |
1127 | *o++ = *p++; | |
1128 | } | |
1129 | #else /* not VMS */ | |
5e570b75 RS |
1130 | if (!IS_DIRECTORY_SEP (*p)) |
1131 | { | |
570d7624 JB |
1132 | *o++ = *p++; |
1133 | } | |
5e570b75 RS |
1134 | #ifdef WINDOWSNT |
1135 | else if (!strncmp (p, "\\\\", 2) || !strncmp (p, "//", 2)) | |
1136 | #else /* not WINDOWSNT */ | |
570d7624 | 1137 | else if (!strncmp (p, "//", 2) |
5e570b75 | 1138 | #endif /* not WINDOWSNT */ |
570d7624 JB |
1139 | #ifdef APOLLO |
1140 | /* // at start of filename is meaningful in Apollo system */ | |
1141 | && o != target | |
1142 | #endif /* APOLLO */ | |
5e570b75 RS |
1143 | #ifdef WINDOWSNT |
1144 | /* \\ at start of filename is meaningful in Windows-NT */ | |
1145 | && o != target | |
1146 | #endif /* WINDOWSNT */ | |
570d7624 JB |
1147 | ) |
1148 | { | |
1149 | o = target; | |
1150 | p++; | |
1151 | } | |
5e570b75 | 1152 | else if (IS_DIRECTORY_SEP (p[0]) |
c77d647e | 1153 | && p[1] == '.' |
5e570b75 | 1154 | && (IS_DIRECTORY_SEP (p[2]) |
c77d647e JB |
1155 | || p[2] == 0)) |
1156 | { | |
1157 | /* If "/." is the entire filename, keep the "/". Otherwise, | |
1158 | just delete the whole "/.". */ | |
1159 | if (o == target && p[2] == '\0') | |
1160 | *o++ = *p; | |
1161 | p += 2; | |
1162 | } | |
5e570b75 RS |
1163 | #ifdef WINDOWSNT |
1164 | else if (!strncmp (p, "\\..", 3) || !strncmp (p, "/..", 3)) | |
1165 | #else /* not WINDOWSNT */ | |
570d7624 | 1166 | else if (!strncmp (p, "/..", 3) |
5e570b75 | 1167 | #endif /* not WINDOWSNT */ |
570d7624 JB |
1168 | /* `/../' is the "superroot" on certain file systems. */ |
1169 | && o != target | |
5e570b75 | 1170 | && (IS_DIRECTORY_SEP (p[3]) || p[3] == 0)) |
570d7624 | 1171 | { |
5e570b75 | 1172 | while (o != target && (--o) && !IS_DIRECTORY_SEP (*o)) |
570d7624 JB |
1173 | ; |
1174 | #ifdef APOLLO | |
1175 | if (o == target + 1 && o[-1] == '/' && o[0] == '/') | |
1176 | ++o; | |
1177 | else | |
1178 | #endif /* APOLLO */ | |
5e570b75 RS |
1179 | #ifdef WINDOWSNT |
1180 | if (o == target + 1 && (o[-1] == '/' && o[0] == '/') | |
1181 | || (o[-1] == '\\' && o[0] == '\\')) | |
1182 | ++o; | |
1183 | else | |
1184 | #endif /* WINDOWSNT */ | |
1185 | if (o == target && IS_ANY_SEP (*o)) | |
570d7624 JB |
1186 | ++o; |
1187 | p += 3; | |
1188 | } | |
1189 | else | |
5e570b75 | 1190 | { |
570d7624 JB |
1191 | *o++ = *p++; |
1192 | } | |
1193 | #endif /* not VMS */ | |
1194 | } | |
1195 | ||
5e570b75 | 1196 | #ifdef DOS_NT |
4c3c22f3 | 1197 | /* at last, set drive name. */ |
5e570b75 RS |
1198 | if (target[1] != ':' |
1199 | #ifdef WINDOWSNT | |
1200 | /* Allow network paths that look like "\\foo" */ | |
1201 | && !(IS_DIRECTORY_SEP (target[0]) && IS_DIRECTORY_SEP (target[1])) | |
1202 | #endif /* WINDOWSNT */ | |
1203 | ) | |
4c3c22f3 RS |
1204 | { |
1205 | target -= 2; | |
1206 | target[0] = (drive < 0 ? getdisk () : drive) + 'a'; | |
1207 | target[1] = ':'; | |
1208 | } | |
5e570b75 | 1209 | #endif /* DOS_NT */ |
4c3c22f3 | 1210 | |
570d7624 JB |
1211 | return make_string (target, o - target); |
1212 | } | |
5e570b75 | 1213 | |
570d7624 | 1214 | #if 0 |
5e570b75 | 1215 | /* Changed this DEFUN to a DEAFUN, so as not to confuse `make-docfile'. */ |
e5d77022 | 1216 | DEAFUN ("expand-file-name", Fexpand_file_name, Sexpand_file_name, 1, 2, 0, |
570d7624 JB |
1217 | "Convert FILENAME to absolute, and canonicalize it.\n\ |
1218 | Second arg DEFAULT is directory to start with if FILENAME is relative\n\ | |
1219 | (does not start with slash); if DEFAULT is nil or missing,\n\ | |
1220 | the current buffer's value of default-directory is used.\n\ | |
1221 | Filenames containing `.' or `..' as components are simplified;\n\ | |
1222 | initial `~/' expands to your home directory.\n\ | |
1223 | See also the function `substitute-in-file-name'.") | |
1224 | (name, defalt) | |
1225 | Lisp_Object name, defalt; | |
1226 | { | |
1227 | unsigned char *nm; | |
1228 | ||
1229 | register unsigned char *newdir, *p, *o; | |
1230 | int tlen; | |
1231 | unsigned char *target; | |
1232 | struct passwd *pw; | |
1233 | int lose; | |
1234 | #ifdef VMS | |
1235 | unsigned char * colon = 0; | |
1236 | unsigned char * close = 0; | |
1237 | unsigned char * slash = 0; | |
1238 | unsigned char * brack = 0; | |
1239 | int lbrack = 0, rbrack = 0; | |
1240 | int dots = 0; | |
1241 | #endif /* VMS */ | |
1242 | ||
1243 | CHECK_STRING (name, 0); | |
1244 | ||
1245 | #ifdef VMS | |
1246 | /* Filenames on VMS are always upper case. */ | |
1247 | name = Fupcase (name); | |
1248 | #endif | |
1249 | ||
1250 | nm = XSTRING (name)->data; | |
1251 | ||
1252 | /* If nm is absolute, flush ...// and detect /./ and /../. | |
1253 | If no /./ or /../ we can return right away. */ | |
1254 | if ( | |
1255 | nm[0] == '/' | |
1256 | #ifdef VMS | |
1257 | || index (nm, ':') | |
1258 | #endif /* VMS */ | |
1259 | ) | |
1260 | { | |
1261 | p = nm; | |
1262 | lose = 0; | |
1263 | while (*p) | |
1264 | { | |
1265 | if (p[0] == '/' && p[1] == '/' | |
1266 | #ifdef APOLLO | |
1267 | /* // at start of filename is meaningful on Apollo system */ | |
1268 | && nm != p | |
1269 | #endif /* APOLLO */ | |
1270 | ) | |
1271 | nm = p + 1; | |
1272 | if (p[0] == '/' && p[1] == '~') | |
1273 | nm = p + 1, lose = 1; | |
1274 | if (p[0] == '/' && p[1] == '.' | |
1275 | && (p[2] == '/' || p[2] == 0 | |
1276 | || (p[2] == '.' && (p[3] == '/' || p[3] == 0)))) | |
1277 | lose = 1; | |
1278 | #ifdef VMS | |
1279 | if (p[0] == '\\') | |
1280 | lose = 1; | |
1281 | if (p[0] == '/') { | |
1282 | /* if dev:[dir]/, move nm to / */ | |
1283 | if (!slash && p > nm && (brack || colon)) { | |
1284 | nm = (brack ? brack + 1 : colon + 1); | |
1285 | lbrack = rbrack = 0; | |
1286 | brack = 0; | |
1287 | colon = 0; | |
1288 | } | |
1289 | slash = p; | |
1290 | } | |
1291 | if (p[0] == '-') | |
1292 | #ifndef VMS4_4 | |
1293 | /* VMS pre V4.4,convert '-'s in filenames. */ | |
1294 | if (lbrack == rbrack) | |
1295 | { | |
5e570b75 | 1296 | if (dots < 2) /* this is to allow negative version numbers */ |
570d7624 JB |
1297 | p[0] = '_'; |
1298 | } | |
1299 | else | |
1300 | #endif /* VMS4_4 */ | |
1301 | if (lbrack > rbrack && | |
1302 | ((p[-1] == '.' || p[-1] == '[' || p[-1] == '<') && | |
1303 | (p[1] == '.' || p[1] == ']' || p[1] == '>'))) | |
1304 | lose = 1; | |
1305 | #ifndef VMS4_4 | |
1306 | else | |
1307 | p[0] = '_'; | |
1308 | #endif /* VMS4_4 */ | |
1309 | /* count open brackets, reset close bracket pointer */ | |
1310 | if (p[0] == '[' || p[0] == '<') | |
1311 | lbrack++, brack = 0; | |
1312 | /* count close brackets, set close bracket pointer */ | |
1313 | if (p[0] == ']' || p[0] == '>') | |
1314 | rbrack++, brack = p; | |
1315 | /* detect ][ or >< */ | |
1316 | if ((p[0] == ']' || p[0] == '>') && (p[1] == '[' || p[1] == '<')) | |
1317 | lose = 1; | |
1318 | if ((p[0] == ':' || p[0] == ']' || p[0] == '>') && p[1] == '~') | |
1319 | nm = p + 1, lose = 1; | |
1320 | if (p[0] == ':' && (colon || slash)) | |
1321 | /* if dev1:[dir]dev2:, move nm to dev2: */ | |
1322 | if (brack) | |
1323 | { | |
1324 | nm = brack + 1; | |
1325 | brack = 0; | |
1326 | } | |
1327 | /* if /pathname/dev:, move nm to dev: */ | |
1328 | else if (slash) | |
1329 | nm = slash + 1; | |
1330 | /* if node::dev:, move colon following dev */ | |
1331 | else if (colon && colon[-1] == ':') | |
1332 | colon = p; | |
1333 | /* if dev1:dev2:, move nm to dev2: */ | |
1334 | else if (colon && colon[-1] != ':') | |
1335 | { | |
1336 | nm = colon + 1; | |
1337 | colon = 0; | |
1338 | } | |
1339 | if (p[0] == ':' && !colon) | |
1340 | { | |
1341 | if (p[1] == ':') | |
1342 | p++; | |
1343 | colon = p; | |
1344 | } | |
1345 | if (lbrack == rbrack) | |
1346 | if (p[0] == ';') | |
1347 | dots = 2; | |
1348 | else if (p[0] == '.') | |
1349 | dots++; | |
1350 | #endif /* VMS */ | |
1351 | p++; | |
1352 | } | |
1353 | if (!lose) | |
1354 | { | |
1355 | #ifdef VMS | |
1356 | if (index (nm, '/')) | |
1357 | return build_string (sys_translate_unix (nm)); | |
1358 | #endif /* VMS */ | |
1359 | if (nm == XSTRING (name)->data) | |
1360 | return name; | |
1361 | return build_string (nm); | |
1362 | } | |
1363 | } | |
1364 | ||
1365 | /* Now determine directory to start with and put it in NEWDIR */ | |
1366 | ||
1367 | newdir = 0; | |
1368 | ||
5e570b75 | 1369 | if (nm[0] == '~') /* prefix ~ */ |
570d7624 JB |
1370 | if (nm[1] == '/' |
1371 | #ifdef VMS | |
1372 | || nm[1] == ':' | |
1373 | #endif /* VMS */ | |
1374 | || nm[1] == 0)/* ~/filename */ | |
1375 | { | |
1376 | if (!(newdir = (unsigned char *) egetenv ("HOME"))) | |
1377 | newdir = (unsigned char *) ""; | |
1378 | nm++; | |
1379 | #ifdef VMS | |
5e570b75 | 1380 | nm++; /* Don't leave the slash in nm. */ |
570d7624 JB |
1381 | #endif /* VMS */ |
1382 | } | |
1383 | else /* ~user/filename */ | |
1384 | { | |
1385 | /* Get past ~ to user */ | |
1386 | unsigned char *user = nm + 1; | |
1387 | /* Find end of name. */ | |
1388 | unsigned char *ptr = (unsigned char *) index (user, '/'); | |
1389 | int len = ptr ? ptr - user : strlen (user); | |
1390 | #ifdef VMS | |
1391 | unsigned char *ptr1 = index (user, ':'); | |
1392 | if (ptr1 != 0 && ptr1 - user < len) | |
1393 | len = ptr1 - user; | |
5e570b75 | 1394 | #endif /* VMS */ |
570d7624 JB |
1395 | /* Copy the user name into temp storage. */ |
1396 | o = (unsigned char *) alloca (len + 1); | |
1397 | bcopy ((char *) user, o, len); | |
1398 | o[len] = 0; | |
1399 | ||
1400 | /* Look up the user name. */ | |
1401 | pw = (struct passwd *) getpwnam (o + 1); | |
1402 | if (!pw) | |
1403 | error ("\"%s\" isn't a registered user", o + 1); | |
1404 | ||
1405 | newdir = (unsigned char *) pw->pw_dir; | |
1406 | ||
1407 | /* Discard the user name from NM. */ | |
1408 | nm += len; | |
1409 | } | |
1410 | ||
1411 | if (nm[0] != '/' | |
1412 | #ifdef VMS | |
1413 | && !index (nm, ':') | |
1414 | #endif /* not VMS */ | |
1415 | && !newdir) | |
1416 | { | |
265a9e55 | 1417 | if (NILP (defalt)) |
570d7624 JB |
1418 | defalt = current_buffer->directory; |
1419 | CHECK_STRING (defalt, 1); | |
1420 | newdir = XSTRING (defalt)->data; | |
1421 | } | |
1422 | ||
1423 | /* Now concatenate the directory and name to new space in the stack frame */ | |
1424 | ||
1425 | tlen = (newdir ? strlen (newdir) + 1 : 0) + strlen (nm) + 1; | |
1426 | target = (unsigned char *) alloca (tlen); | |
1427 | *target = 0; | |
1428 | ||
1429 | if (newdir) | |
1430 | { | |
1431 | #ifndef VMS | |
1432 | if (nm[0] == 0 || nm[0] == '/') | |
1433 | strcpy (target, newdir); | |
1434 | else | |
1435 | #endif | |
1436 | file_name_as_directory (target, newdir); | |
1437 | } | |
1438 | ||
1439 | strcat (target, nm); | |
1440 | #ifdef VMS | |
1441 | if (index (target, '/')) | |
1442 | strcpy (target, sys_translate_unix (target)); | |
1443 | #endif /* VMS */ | |
1444 | ||
1445 | /* Now canonicalize by removing /. and /foo/.. if they appear */ | |
1446 | ||
1447 | p = target; | |
1448 | o = target; | |
1449 | ||
1450 | while (*p) | |
1451 | { | |
1452 | #ifdef VMS | |
1453 | if (*p != ']' && *p != '>' && *p != '-') | |
1454 | { | |
1455 | if (*p == '\\') | |
1456 | p++; | |
1457 | *o++ = *p++; | |
1458 | } | |
1459 | else if ((p[0] == ']' || p[0] == '>') && p[0] == p[1] + 2) | |
1460 | /* brackets are offset from each other by 2 */ | |
1461 | { | |
1462 | p += 2; | |
1463 | if (*p != '.' && *p != '-' && o[-1] != '.') | |
1464 | /* convert [foo][bar] to [bar] */ | |
1465 | while (o[-1] != '[' && o[-1] != '<') | |
1466 | o--; | |
1467 | else if (*p == '-' && *o != '.') | |
1468 | *--p = '.'; | |
1469 | } | |
1470 | else if (p[0] == '-' && o[-1] == '.' && | |
1471 | (p[1] == '.' || p[1] == ']' || p[1] == '>')) | |
1472 | /* flush .foo.- ; leave - if stopped by '[' or '<' */ | |
1473 | { | |
1474 | do | |
1475 | o--; | |
1476 | while (o[-1] != '.' && o[-1] != '[' && o[-1] != '<'); | |
5e570b75 | 1477 | if (p[1] == '.') /* foo.-.bar ==> bar. */ |
570d7624 JB |
1478 | p += 2; |
1479 | else if (o[-1] == '.') /* '.foo.-]' ==> ']' */ | |
1480 | p++, o--; | |
1481 | /* else [foo.-] ==> [-] */ | |
1482 | } | |
1483 | else | |
1484 | { | |
1485 | #ifndef VMS4_4 | |
1486 | if (*p == '-' && | |
1487 | o[-1] != '[' && o[-1] != '<' && o[-1] != '.' && | |
1488 | p[1] != ']' && p[1] != '>' && p[1] != '.') | |
1489 | *p = '_'; | |
1490 | #endif /* VMS4_4 */ | |
1491 | *o++ = *p++; | |
1492 | } | |
1493 | #else /* not VMS */ | |
1494 | if (*p != '/') | |
5e570b75 | 1495 | { |
570d7624 JB |
1496 | *o++ = *p++; |
1497 | } | |
1498 | else if (!strncmp (p, "//", 2) | |
1499 | #ifdef APOLLO | |
1500 | /* // at start of filename is meaningful in Apollo system */ | |
1501 | && o != target | |
1502 | #endif /* APOLLO */ | |
1503 | ) | |
1504 | { | |
1505 | o = target; | |
1506 | p++; | |
1507 | } | |
1508 | else if (p[0] == '/' && p[1] == '.' && | |
1509 | (p[2] == '/' || p[2] == 0)) | |
1510 | p += 2; | |
1511 | else if (!strncmp (p, "/..", 3) | |
1512 | /* `/../' is the "superroot" on certain file systems. */ | |
1513 | && o != target | |
1514 | && (p[3] == '/' || p[3] == 0)) | |
1515 | { | |
1516 | while (o != target && *--o != '/') | |
1517 | ; | |
1518 | #ifdef APOLLO | |
1519 | if (o == target + 1 && o[-1] == '/' && o[0] == '/') | |
1520 | ++o; | |
1521 | else | |
1522 | #endif /* APOLLO */ | |
1523 | if (o == target && *o == '/') | |
1524 | ++o; | |
1525 | p += 3; | |
1526 | } | |
1527 | else | |
5e570b75 | 1528 | { |
570d7624 JB |
1529 | *o++ = *p++; |
1530 | } | |
1531 | #endif /* not VMS */ | |
1532 | } | |
1533 | ||
1534 | return make_string (target, o - target); | |
1535 | } | |
1536 | #endif | |
1537 | \f | |
1538 | DEFUN ("substitute-in-file-name", Fsubstitute_in_file_name, | |
1539 | Ssubstitute_in_file_name, 1, 1, 0, | |
1540 | "Substitute environment variables referred to in FILENAME.\n\ | |
1541 | `$FOO' where FOO is an environment variable name means to substitute\n\ | |
1542 | the value of that variable. The variable name should be terminated\n\ | |
1543 | with a character not a letter, digit or underscore; otherwise, enclose\n\ | |
1544 | the entire variable name in braces.\n\ | |
1545 | If `/~' appears, all of FILENAME through that `/' is discarded.\n\n\ | |
1546 | On VMS, `$' substitution is not done; this function does little and only\n\ | |
1547 | duplicates what `expand-file-name' does.") | |
1548 | (string) | |
1549 | Lisp_Object string; | |
1550 | { | |
1551 | unsigned char *nm; | |
1552 | ||
1553 | register unsigned char *s, *p, *o, *x, *endp; | |
1554 | unsigned char *target; | |
1555 | int total = 0; | |
1556 | int substituted = 0; | |
1557 | unsigned char *xnm; | |
1558 | ||
1559 | CHECK_STRING (string, 0); | |
1560 | ||
1561 | nm = XSTRING (string)->data; | |
a5a1cc06 RS |
1562 | #ifdef MSDOS |
1563 | dostounix_filename (nm = strcpy (alloca (strlen (nm) + 1), nm)); | |
1564 | substituted = !strcmp (nm, XSTRING (string)->data); | |
1565 | #endif | |
570d7624 JB |
1566 | endp = nm + XSTRING (string)->size; |
1567 | ||
1568 | /* If /~ or // appears, discard everything through first slash. */ | |
1569 | ||
1570 | for (p = nm; p != endp; p++) | |
1571 | { | |
1572 | if ((p[0] == '~' || | |
1573 | #ifdef APOLLO | |
1574 | /* // at start of file name is meaningful in Apollo system */ | |
1575 | (p[0] == '/' && p - 1 != nm) | |
1576 | #else /* not APOLLO */ | |
5e570b75 RS |
1577 | #ifdef WINDOWSNT |
1578 | (IS_DIRECTORY_SEP (p[0]) && p - 1 != nm) | |
1579 | #else /* not WINDOWSNT */ | |
570d7624 | 1580 | p[0] == '/' |
5e570b75 | 1581 | #endif /* not WINDOWSNT */ |
570d7624 JB |
1582 | #endif /* not APOLLO */ |
1583 | ) | |
5e570b75 RS |
1584 | && p != nm |
1585 | && (0 | |
570d7624 | 1586 | #ifdef VMS |
5e570b75 | 1587 | || p[-1] == ':' || p[-1] == ']' || p[-1] == '>' |
570d7624 | 1588 | #endif /* VMS */ |
5e570b75 | 1589 | || IS_DIRECTORY_SEP (p[-1]))) |
570d7624 JB |
1590 | { |
1591 | nm = p; | |
1592 | substituted = 1; | |
1593 | } | |
5e570b75 | 1594 | #ifdef DOS_NT |
4c3c22f3 RS |
1595 | if (p[0] && p[1] == ':') |
1596 | { | |
1597 | nm = p; | |
1598 | substituted = 1; | |
1599 | } | |
5e570b75 | 1600 | #endif /* DOS_NT */ |
570d7624 JB |
1601 | } |
1602 | ||
1603 | #ifdef VMS | |
1604 | return build_string (nm); | |
1605 | #else | |
1606 | ||
1607 | /* See if any variables are substituted into the string | |
1608 | and find the total length of their values in `total' */ | |
1609 | ||
1610 | for (p = nm; p != endp;) | |
1611 | if (*p != '$') | |
1612 | p++; | |
1613 | else | |
1614 | { | |
1615 | p++; | |
1616 | if (p == endp) | |
1617 | goto badsubst; | |
1618 | else if (*p == '$') | |
1619 | { | |
1620 | /* "$$" means a single "$" */ | |
1621 | p++; | |
1622 | total -= 1; | |
1623 | substituted = 1; | |
1624 | continue; | |
1625 | } | |
1626 | else if (*p == '{') | |
1627 | { | |
1628 | o = ++p; | |
1629 | while (p != endp && *p != '}') p++; | |
1630 | if (*p != '}') goto missingclose; | |
1631 | s = p; | |
1632 | } | |
1633 | else | |
1634 | { | |
1635 | o = p; | |
1636 | while (p != endp && (isalnum (*p) || *p == '_')) p++; | |
1637 | s = p; | |
1638 | } | |
1639 | ||
1640 | /* Copy out the variable name */ | |
1641 | target = (unsigned char *) alloca (s - o + 1); | |
1642 | strncpy (target, o, s - o); | |
1643 | target[s - o] = 0; | |
5e570b75 | 1644 | #ifdef DOS_NT |
4c3c22f3 | 1645 | strupr (target); /* $home == $HOME etc. */ |
5e570b75 | 1646 | #endif /* DOS_NT */ |
570d7624 JB |
1647 | |
1648 | /* Get variable value */ | |
1649 | o = (unsigned char *) egetenv (target); | |
570d7624 JB |
1650 | if (!o) goto badvar; |
1651 | total += strlen (o); | |
1652 | substituted = 1; | |
1653 | } | |
1654 | ||
1655 | if (!substituted) | |
1656 | return string; | |
1657 | ||
1658 | /* If substitution required, recopy the string and do it */ | |
1659 | /* Make space in stack frame for the new copy */ | |
1660 | xnm = (unsigned char *) alloca (XSTRING (string)->size + total + 1); | |
1661 | x = xnm; | |
1662 | ||
1663 | /* Copy the rest of the name through, replacing $ constructs with values */ | |
1664 | for (p = nm; *p;) | |
1665 | if (*p != '$') | |
1666 | *x++ = *p++; | |
1667 | else | |
1668 | { | |
1669 | p++; | |
1670 | if (p == endp) | |
1671 | goto badsubst; | |
1672 | else if (*p == '$') | |
1673 | { | |
1674 | *x++ = *p++; | |
1675 | continue; | |
1676 | } | |
1677 | else if (*p == '{') | |
1678 | { | |
1679 | o = ++p; | |
1680 | while (p != endp && *p != '}') p++; | |
1681 | if (*p != '}') goto missingclose; | |
1682 | s = p++; | |
1683 | } | |
1684 | else | |
1685 | { | |
1686 | o = p; | |
1687 | while (p != endp && (isalnum (*p) || *p == '_')) p++; | |
1688 | s = p; | |
1689 | } | |
1690 | ||
1691 | /* Copy out the variable name */ | |
1692 | target = (unsigned char *) alloca (s - o + 1); | |
1693 | strncpy (target, o, s - o); | |
1694 | target[s - o] = 0; | |
5e570b75 | 1695 | #ifdef DOS_NT |
4c3c22f3 | 1696 | strupr (target); /* $home == $HOME etc. */ |
5e570b75 | 1697 | #endif /* DOS_NT */ |
570d7624 JB |
1698 | |
1699 | /* Get variable value */ | |
1700 | o = (unsigned char *) egetenv (target); | |
570d7624 JB |
1701 | if (!o) |
1702 | goto badvar; | |
1703 | ||
1704 | strcpy (x, o); | |
1705 | x += strlen (o); | |
1706 | } | |
1707 | ||
1708 | *x = 0; | |
1709 | ||
1710 | /* If /~ or // appears, discard everything through first slash. */ | |
1711 | ||
1712 | for (p = xnm; p != x; p++) | |
5e570b75 | 1713 | if ((p[0] == '~' |
570d7624 JB |
1714 | #ifdef APOLLO |
1715 | /* // at start of file name is meaningful in Apollo system */ | |
5e570b75 | 1716 | || (p[0] == '/' && p - 1 != xnm) |
570d7624 | 1717 | #else /* not APOLLO */ |
5e570b75 RS |
1718 | #ifdef WINDOWSNT |
1719 | || (IS_DIRECTORY_SEP (p[0]) && p - 1 != xnm) | |
1720 | #else /* not WINDOWSNT */ | |
1721 | || p[0] == '/' | |
1722 | #endif /* not WINDOWSNT */ | |
55928174 | 1723 | #endif /* not APOLLO */ |
570d7624 | 1724 | ) |
5e570b75 | 1725 | && p != nm && IS_DIRECTORY_SEP (p[-1])) |
570d7624 | 1726 | xnm = p; |
5e570b75 | 1727 | #ifdef DOS_NT |
4c3c22f3 RS |
1728 | else if (p[0] && p[1] == ':') |
1729 | xnm = p; | |
1730 | #endif | |
570d7624 JB |
1731 | |
1732 | return make_string (xnm, x - xnm); | |
1733 | ||
1734 | badsubst: | |
1735 | error ("Bad format environment-variable substitution"); | |
1736 | missingclose: | |
1737 | error ("Missing \"}\" in environment-variable substitution"); | |
1738 | badvar: | |
1739 | error ("Substituting nonexistent environment variable \"%s\"", target); | |
1740 | ||
1741 | /* NOTREACHED */ | |
1742 | #endif /* not VMS */ | |
1743 | } | |
1744 | \f | |
067ffa38 | 1745 | /* A slightly faster and more convenient way to get |
298b760e | 1746 | (directory-file-name (expand-file-name FOO)). */ |
067ffa38 | 1747 | |
570d7624 JB |
1748 | Lisp_Object |
1749 | expand_and_dir_to_file (filename, defdir) | |
1750 | Lisp_Object filename, defdir; | |
1751 | { | |
1752 | register Lisp_Object abspath; | |
1753 | ||
1754 | abspath = Fexpand_file_name (filename, defdir); | |
1755 | #ifdef VMS | |
1756 | { | |
1757 | register int c = XSTRING (abspath)->data[XSTRING (abspath)->size - 1]; | |
1758 | if (c == ':' || c == ']' || c == '>') | |
1759 | abspath = Fdirectory_file_name (abspath); | |
1760 | } | |
1761 | #else | |
1762 | /* Remove final slash, if any (unless path is root). | |
1763 | stat behaves differently depending! */ | |
1764 | if (XSTRING (abspath)->size > 1 | |
5e570b75 RS |
1765 | && IS_DIRECTORY_SEP (XSTRING (abspath)->data[XSTRING (abspath)->size - 1]) |
1766 | && !IS_DEVICE_SEP (XSTRING (abspath)->data[XSTRING (abspath)->size-2])) | |
ddc61f46 RS |
1767 | /* We cannot take shortcuts; they might be wrong for magic file names. */ |
1768 | abspath = Fdirectory_file_name (abspath); | |
570d7624 JB |
1769 | #endif |
1770 | return abspath; | |
1771 | } | |
1772 | \f | |
c4df73f9 | 1773 | void |
570d7624 JB |
1774 | barf_or_query_if_file_exists (absname, querystring, interactive) |
1775 | Lisp_Object absname; | |
1776 | unsigned char *querystring; | |
1777 | int interactive; | |
1778 | { | |
1779 | register Lisp_Object tem; | |
4018b5ef | 1780 | struct stat statbuf; |
570d7624 JB |
1781 | struct gcpro gcpro1; |
1782 | ||
4018b5ef RS |
1783 | /* stat is a good way to tell whether the file exists, |
1784 | regardless of what access permissions it has. */ | |
1785 | if (stat (XSTRING (absname)->data, &statbuf) >= 0) | |
570d7624 JB |
1786 | { |
1787 | if (! interactive) | |
1788 | Fsignal (Qfile_already_exists, | |
1789 | Fcons (build_string ("File already exists"), | |
1790 | Fcons (absname, Qnil))); | |
1791 | GCPRO1 (absname); | |
1792 | tem = do_yes_or_no_p (format1 ("File %s already exists; %s anyway? ", | |
1793 | XSTRING (absname)->data, querystring)); | |
1794 | UNGCPRO; | |
265a9e55 | 1795 | if (NILP (tem)) |
570d7624 JB |
1796 | Fsignal (Qfile_already_exists, |
1797 | Fcons (build_string ("File already exists"), | |
1798 | Fcons (absname, Qnil))); | |
1799 | } | |
1800 | return; | |
1801 | } | |
1802 | ||
1803 | DEFUN ("copy-file", Fcopy_file, Scopy_file, 2, 4, | |
349a7710 | 1804 | "fCopy file: \nFCopy %s to file: \np\nP", |
570d7624 JB |
1805 | "Copy FILE to NEWNAME. Both args must be strings.\n\ |
1806 | Signals a `file-already-exists' error if file NEWNAME already exists,\n\ | |
1807 | unless a third argument OK-IF-ALREADY-EXISTS is supplied and non-nil.\n\ | |
1808 | A number as third arg means request confirmation if NEWNAME already exists.\n\ | |
1809 | This is what happens in interactive use with M-x.\n\ | |
349a7710 JB |
1810 | Fourth arg KEEP-TIME non-nil means give the new file the same\n\ |
1811 | last-modified time as the old one. (This works on only some systems.)\n\ | |
1812 | A prefix arg makes KEEP-TIME non-nil.") | |
570d7624 JB |
1813 | (filename, newname, ok_if_already_exists, keep_date) |
1814 | Lisp_Object filename, newname, ok_if_already_exists, keep_date; | |
1815 | { | |
1816 | int ifd, ofd, n; | |
1817 | char buf[16 * 1024]; | |
1818 | struct stat st; | |
32f4334d | 1819 | Lisp_Object handler; |
570d7624 | 1820 | struct gcpro gcpro1, gcpro2; |
b5148e85 | 1821 | int count = specpdl_ptr - specpdl; |
f73b0ada | 1822 | int input_file_statable_p; |
570d7624 JB |
1823 | |
1824 | GCPRO2 (filename, newname); | |
1825 | CHECK_STRING (filename, 0); | |
1826 | CHECK_STRING (newname, 1); | |
1827 | filename = Fexpand_file_name (filename, Qnil); | |
1828 | newname = Fexpand_file_name (newname, Qnil); | |
32f4334d | 1829 | |
0bf2eed2 | 1830 | /* If the input file name has special constructs in it, |
32f4334d | 1831 | call the corresponding file handler. */ |
49307295 | 1832 | handler = Ffind_file_name_handler (filename, Qcopy_file); |
0bf2eed2 | 1833 | /* Likewise for output file name. */ |
51cf6d37 | 1834 | if (NILP (handler)) |
49307295 | 1835 | handler = Ffind_file_name_handler (newname, Qcopy_file); |
32f4334d | 1836 | if (!NILP (handler)) |
36712b0a KH |
1837 | RETURN_UNGCPRO (call5 (handler, Qcopy_file, filename, newname, |
1838 | ok_if_already_exists, keep_date)); | |
32f4334d | 1839 | |
265a9e55 | 1840 | if (NILP (ok_if_already_exists) |
93c30b5f | 1841 | || INTEGERP (ok_if_already_exists)) |
570d7624 | 1842 | barf_or_query_if_file_exists (newname, "copy to it", |
93c30b5f | 1843 | INTEGERP (ok_if_already_exists)); |
570d7624 | 1844 | |
4018b5ef | 1845 | ifd = open (XSTRING (filename)->data, O_RDONLY); |
570d7624 JB |
1846 | if (ifd < 0) |
1847 | report_file_error ("Opening input file", Fcons (filename, Qnil)); | |
1848 | ||
b5148e85 RS |
1849 | record_unwind_protect (close_file_unwind, make_number (ifd)); |
1850 | ||
f73b0ada BF |
1851 | /* We can only copy regular files and symbolic links. Other files are not |
1852 | copyable by us. */ | |
1853 | input_file_statable_p = (fstat (ifd, &st) >= 0); | |
1854 | ||
1855 | #if defined (S_ISREG) && defined (S_ISLNK) | |
1856 | if (input_file_statable_p) | |
1857 | { | |
1858 | if (!(S_ISREG (st.st_mode)) && !(S_ISLNK (st.st_mode))) | |
1859 | { | |
1860 | #if defined (EISDIR) | |
1861 | /* Get a better looking error message. */ | |
1862 | errno = EISDIR; | |
1863 | #endif /* EISDIR */ | |
1864 | report_file_error ("Non-regular file", Fcons (filename, Qnil)); | |
1865 | } | |
1866 | } | |
1867 | #endif /* S_ISREG && S_ISLNK */ | |
1868 | ||
570d7624 JB |
1869 | #ifdef VMS |
1870 | /* Create the copy file with the same record format as the input file */ | |
1871 | ofd = sys_creat (XSTRING (newname)->data, 0666, ifd); | |
1872 | #else | |
4c3c22f3 RS |
1873 | #ifdef MSDOS |
1874 | /* System's default file type was set to binary by _fmode in emacs.c. */ | |
1875 | ofd = creat (XSTRING (newname)->data, S_IREAD | S_IWRITE); | |
1876 | #else /* not MSDOS */ | |
570d7624 | 1877 | ofd = creat (XSTRING (newname)->data, 0666); |
4c3c22f3 | 1878 | #endif /* not MSDOS */ |
570d7624 JB |
1879 | #endif /* VMS */ |
1880 | if (ofd < 0) | |
66331187 | 1881 | report_file_error ("Opening output file", Fcons (newname, Qnil)); |
b5148e85 RS |
1882 | |
1883 | record_unwind_protect (close_file_unwind, make_number (ofd)); | |
570d7624 | 1884 | |
b5148e85 RS |
1885 | immediate_quit = 1; |
1886 | QUIT; | |
570d7624 JB |
1887 | while ((n = read (ifd, buf, sizeof buf)) > 0) |
1888 | if (write (ofd, buf, n) != n) | |
66331187 | 1889 | report_file_error ("I/O error", Fcons (newname, Qnil)); |
b5148e85 | 1890 | immediate_quit = 0; |
570d7624 | 1891 | |
5acac34e RS |
1892 | /* Closing the output clobbers the file times on some systems. */ |
1893 | if (close (ofd) < 0) | |
1894 | report_file_error ("I/O error", Fcons (newname, Qnil)); | |
1895 | ||
f73b0ada | 1896 | if (input_file_statable_p) |
570d7624 | 1897 | { |
265a9e55 | 1898 | if (!NILP (keep_date)) |
570d7624 | 1899 | { |
de5bf5d3 JB |
1900 | EMACS_TIME atime, mtime; |
1901 | EMACS_SET_SECS_USECS (atime, st.st_atime, 0); | |
1902 | EMACS_SET_SECS_USECS (mtime, st.st_mtime, 0); | |
d6303611 KH |
1903 | if (set_file_times (XSTRING (newname)->data, atime, mtime)) |
1904 | report_file_error ("I/O error", Fcons (newname, Qnil)); | |
570d7624 | 1905 | } |
570d7624 JB |
1906 | #ifdef APOLLO |
1907 | if (!egetenv ("USE_DOMAIN_ACLS")) | |
1908 | #endif | |
de5bf5d3 | 1909 | chmod (XSTRING (newname)->data, st.st_mode & 07777); |
570d7624 JB |
1910 | } |
1911 | ||
5acac34e RS |
1912 | close (ifd); |
1913 | ||
b5148e85 RS |
1914 | /* Discard the unwind protects. */ |
1915 | specpdl_ptr = specpdl + count; | |
1916 | ||
570d7624 JB |
1917 | UNGCPRO; |
1918 | return Qnil; | |
1919 | } | |
1920 | ||
9bbe01fb | 1921 | DEFUN ("make-directory-internal", Fmake_directory_internal, |
353cfc19 | 1922 | Smake_directory_internal, 1, 1, 0, |
570d7624 JB |
1923 | "Create a directory. One argument, a file name string.") |
1924 | (dirname) | |
1925 | Lisp_Object dirname; | |
1926 | { | |
1927 | unsigned char *dir; | |
32f4334d | 1928 | Lisp_Object handler; |
570d7624 JB |
1929 | |
1930 | CHECK_STRING (dirname, 0); | |
1931 | dirname = Fexpand_file_name (dirname, Qnil); | |
32f4334d | 1932 | |
a6e6e718 | 1933 | handler = Ffind_file_name_handler (dirname, Qmake_directory_internal); |
32f4334d | 1934 | if (!NILP (handler)) |
e508ad53 | 1935 | return call2 (handler, Qmake_directory_internal, dirname); |
9bbe01fb | 1936 | |
570d7624 JB |
1937 | dir = XSTRING (dirname)->data; |
1938 | ||
5e570b75 RS |
1939 | #ifdef WINDOWSNT |
1940 | if (mkdir (dir) != 0) | |
1941 | #else | |
570d7624 | 1942 | if (mkdir (dir, 0777) != 0) |
5e570b75 | 1943 | #endif |
570d7624 JB |
1944 | report_file_error ("Creating directory", Flist (1, &dirname)); |
1945 | ||
32f4334d | 1946 | return Qnil; |
570d7624 JB |
1947 | } |
1948 | ||
aa734e17 | 1949 | DEFUN ("delete-directory", Fdelete_directory, Sdelete_directory, 1, 1, "FDelete directory: ", |
1691b32b | 1950 | "Delete a directory. One argument, a file name or directory name string.") |
570d7624 JB |
1951 | (dirname) |
1952 | Lisp_Object dirname; | |
1953 | { | |
1954 | unsigned char *dir; | |
32f4334d | 1955 | Lisp_Object handler; |
570d7624 JB |
1956 | |
1957 | CHECK_STRING (dirname, 0); | |
1691b32b | 1958 | dirname = Fdirectory_file_name (Fexpand_file_name (dirname, Qnil)); |
570d7624 JB |
1959 | dir = XSTRING (dirname)->data; |
1960 | ||
49307295 | 1961 | handler = Ffind_file_name_handler (dirname, Qdelete_directory); |
32f4334d RS |
1962 | if (!NILP (handler)) |
1963 | return call2 (handler, Qdelete_directory, dirname); | |
1964 | ||
570d7624 JB |
1965 | if (rmdir (dir) != 0) |
1966 | report_file_error ("Removing directory", Flist (1, &dirname)); | |
1967 | ||
1968 | return Qnil; | |
1969 | } | |
1970 | ||
1971 | DEFUN ("delete-file", Fdelete_file, Sdelete_file, 1, 1, "fDelete file: ", | |
1972 | "Delete specified file. One argument, a file name string.\n\ | |
1973 | If file has multiple names, it continues to exist with the other names.") | |
1974 | (filename) | |
1975 | Lisp_Object filename; | |
1976 | { | |
32f4334d | 1977 | Lisp_Object handler; |
570d7624 JB |
1978 | CHECK_STRING (filename, 0); |
1979 | filename = Fexpand_file_name (filename, Qnil); | |
32f4334d | 1980 | |
49307295 | 1981 | handler = Ffind_file_name_handler (filename, Qdelete_file); |
32f4334d | 1982 | if (!NILP (handler)) |
8a9b0da9 | 1983 | return call2 (handler, Qdelete_file, filename); |
32f4334d | 1984 | |
570d7624 JB |
1985 | if (0 > unlink (XSTRING (filename)->data)) |
1986 | report_file_error ("Removing old name", Flist (1, &filename)); | |
8a9b0da9 | 1987 | return Qnil; |
570d7624 JB |
1988 | } |
1989 | ||
1990 | DEFUN ("rename-file", Frename_file, Srename_file, 2, 3, | |
1991 | "fRename file: \nFRename %s to file: \np", | |
1992 | "Rename FILE as NEWNAME. Both args strings.\n\ | |
1993 | If file has names other than FILE, it continues to have those names.\n\ | |
1994 | Signals a `file-already-exists' error if a file NEWNAME already exists\n\ | |
1995 | unless optional third argument OK-IF-ALREADY-EXISTS is non-nil.\n\ | |
1996 | A number as third arg means request confirmation if NEWNAME already exists.\n\ | |
1997 | This is what happens in interactive use with M-x.") | |
1998 | (filename, newname, ok_if_already_exists) | |
1999 | Lisp_Object filename, newname, ok_if_already_exists; | |
2000 | { | |
2001 | #ifdef NO_ARG_ARRAY | |
2002 | Lisp_Object args[2]; | |
2003 | #endif | |
32f4334d | 2004 | Lisp_Object handler; |
570d7624 JB |
2005 | struct gcpro gcpro1, gcpro2; |
2006 | ||
2007 | GCPRO2 (filename, newname); | |
2008 | CHECK_STRING (filename, 0); | |
2009 | CHECK_STRING (newname, 1); | |
2010 | filename = Fexpand_file_name (filename, Qnil); | |
2011 | newname = Fexpand_file_name (newname, Qnil); | |
32f4334d RS |
2012 | |
2013 | /* If the file name has special constructs in it, | |
2014 | call the corresponding file handler. */ | |
49307295 | 2015 | handler = Ffind_file_name_handler (filename, Qrename_file); |
51cf6d37 | 2016 | if (NILP (handler)) |
49307295 | 2017 | handler = Ffind_file_name_handler (newname, Qrename_file); |
32f4334d | 2018 | if (!NILP (handler)) |
36712b0a KH |
2019 | RETURN_UNGCPRO (call4 (handler, Qrename_file, |
2020 | filename, newname, ok_if_already_exists)); | |
32f4334d | 2021 | |
265a9e55 | 2022 | if (NILP (ok_if_already_exists) |
93c30b5f | 2023 | || INTEGERP (ok_if_already_exists)) |
570d7624 | 2024 | barf_or_query_if_file_exists (newname, "rename to it", |
93c30b5f | 2025 | INTEGERP (ok_if_already_exists)); |
570d7624 JB |
2026 | #ifndef BSD4_1 |
2027 | if (0 > rename (XSTRING (filename)->data, XSTRING (newname)->data)) | |
2028 | #else | |
5e570b75 RS |
2029 | #ifdef WINDOWSNT |
2030 | if (!MoveFile (XSTRING (filename)->data, XSTRING (newname)->data)) | |
2031 | #else /* not WINDOWSNT */ | |
570d7624 JB |
2032 | if (0 > link (XSTRING (filename)->data, XSTRING (newname)->data) |
2033 | || 0 > unlink (XSTRING (filename)->data)) | |
5e570b75 | 2034 | #endif /* not WINDOWSNT */ |
570d7624 JB |
2035 | #endif |
2036 | { | |
5e570b75 RS |
2037 | #ifdef WINDOWSNT |
2038 | /* Why two? And why doesn't MS document what MoveFile will return? */ | |
2039 | if (GetLastError () == ERROR_FILE_EXISTS | |
2040 | || GetLastError () == ERROR_ALREADY_EXISTS) | |
2041 | #else /* not WINDOWSNT */ | |
570d7624 | 2042 | if (errno == EXDEV) |
5e570b75 | 2043 | #endif /* not WINDOWSNT */ |
570d7624 | 2044 | { |
d093c3ac RM |
2045 | Fcopy_file (filename, newname, |
2046 | /* We have already prompted if it was an integer, | |
2047 | so don't have copy-file prompt again. */ | |
2048 | NILP (ok_if_already_exists) ? Qnil : Qt, Qt); | |
570d7624 JB |
2049 | Fdelete_file (filename); |
2050 | } | |
2051 | else | |
2052 | #ifdef NO_ARG_ARRAY | |
2053 | { | |
2054 | args[0] = filename; | |
2055 | args[1] = newname; | |
2056 | report_file_error ("Renaming", Flist (2, args)); | |
2057 | } | |
2058 | #else | |
2059 | report_file_error ("Renaming", Flist (2, &filename)); | |
2060 | #endif | |
2061 | } | |
2062 | UNGCPRO; | |
2063 | return Qnil; | |
2064 | } | |
2065 | ||
2066 | DEFUN ("add-name-to-file", Fadd_name_to_file, Sadd_name_to_file, 2, 3, | |
2067 | "fAdd name to file: \nFName to add to %s: \np", | |
2068 | "Give FILE additional name NEWNAME. Both args strings.\n\ | |
2069 | Signals a `file-already-exists' error if a file NEWNAME already exists\n\ | |
2070 | unless optional third argument OK-IF-ALREADY-EXISTS is non-nil.\n\ | |
2071 | A number as third arg means request confirmation if NEWNAME already exists.\n\ | |
2072 | This is what happens in interactive use with M-x.") | |
2073 | (filename, newname, ok_if_already_exists) | |
2074 | Lisp_Object filename, newname, ok_if_already_exists; | |
2075 | { | |
2076 | #ifdef NO_ARG_ARRAY | |
2077 | Lisp_Object args[2]; | |
2078 | #endif | |
32f4334d | 2079 | Lisp_Object handler; |
570d7624 JB |
2080 | struct gcpro gcpro1, gcpro2; |
2081 | ||
2082 | GCPRO2 (filename, newname); | |
2083 | CHECK_STRING (filename, 0); | |
2084 | CHECK_STRING (newname, 1); | |
2085 | filename = Fexpand_file_name (filename, Qnil); | |
2086 | newname = Fexpand_file_name (newname, Qnil); | |
32f4334d RS |
2087 | |
2088 | /* If the file name has special constructs in it, | |
2089 | call the corresponding file handler. */ | |
49307295 | 2090 | handler = Ffind_file_name_handler (filename, Qadd_name_to_file); |
32f4334d | 2091 | if (!NILP (handler)) |
36712b0a KH |
2092 | RETURN_UNGCPRO (call4 (handler, Qadd_name_to_file, filename, |
2093 | newname, ok_if_already_exists)); | |
32f4334d | 2094 | |
265a9e55 | 2095 | if (NILP (ok_if_already_exists) |
93c30b5f | 2096 | || INTEGERP (ok_if_already_exists)) |
570d7624 | 2097 | barf_or_query_if_file_exists (newname, "make it a new name", |
93c30b5f | 2098 | INTEGERP (ok_if_already_exists)); |
5e570b75 RS |
2099 | #ifdef WINDOWSNT |
2100 | /* Windows does not support this operation. */ | |
2101 | report_file_error ("Adding new name", Flist (2, &filename)); | |
2102 | #else /* not WINDOWSNT */ | |
2103 | ||
570d7624 JB |
2104 | unlink (XSTRING (newname)->data); |
2105 | if (0 > link (XSTRING (filename)->data, XSTRING (newname)->data)) | |
2106 | { | |
2107 | #ifdef NO_ARG_ARRAY | |
2108 | args[0] = filename; | |
2109 | args[1] = newname; | |
2110 | report_file_error ("Adding new name", Flist (2, args)); | |
2111 | #else | |
2112 | report_file_error ("Adding new name", Flist (2, &filename)); | |
2113 | #endif | |
2114 | } | |
5e570b75 | 2115 | #endif /* not WINDOWSNT */ |
570d7624 JB |
2116 | |
2117 | UNGCPRO; | |
2118 | return Qnil; | |
2119 | } | |
2120 | ||
2121 | #ifdef S_IFLNK | |
2122 | DEFUN ("make-symbolic-link", Fmake_symbolic_link, Smake_symbolic_link, 2, 3, | |
2123 | "FMake symbolic link to file: \nFMake symbolic link to file %s: \np", | |
2124 | "Make a symbolic link to FILENAME, named LINKNAME. Both args strings.\n\ | |
11183104 | 2125 | Signals a `file-already-exists' error if a file LINKNAME already exists\n\ |
570d7624 | 2126 | unless optional third argument OK-IF-ALREADY-EXISTS is non-nil.\n\ |
11183104 | 2127 | A number as third arg means request confirmation if LINKNAME already exists.\n\ |
570d7624 | 2128 | This happens for interactive use with M-x.") |
e5d77022 JB |
2129 | (filename, linkname, ok_if_already_exists) |
2130 | Lisp_Object filename, linkname, ok_if_already_exists; | |
570d7624 JB |
2131 | { |
2132 | #ifdef NO_ARG_ARRAY | |
2133 | Lisp_Object args[2]; | |
2134 | #endif | |
32f4334d | 2135 | Lisp_Object handler; |
570d7624 JB |
2136 | struct gcpro gcpro1, gcpro2; |
2137 | ||
e5d77022 | 2138 | GCPRO2 (filename, linkname); |
570d7624 | 2139 | CHECK_STRING (filename, 0); |
e5d77022 | 2140 | CHECK_STRING (linkname, 1); |
d9bc1c99 RS |
2141 | /* If the link target has a ~, we must expand it to get |
2142 | a truly valid file name. Otherwise, do not expand; | |
2143 | we want to permit links to relative file names. */ | |
2144 | if (XSTRING (filename)->data[0] == '~') | |
2145 | filename = Fexpand_file_name (filename, Qnil); | |
e5d77022 | 2146 | linkname = Fexpand_file_name (linkname, Qnil); |
32f4334d RS |
2147 | |
2148 | /* If the file name has special constructs in it, | |
2149 | call the corresponding file handler. */ | |
49307295 | 2150 | handler = Ffind_file_name_handler (filename, Qmake_symbolic_link); |
32f4334d | 2151 | if (!NILP (handler)) |
36712b0a KH |
2152 | RETURN_UNGCPRO (call4 (handler, Qmake_symbolic_link, filename, |
2153 | linkname, ok_if_already_exists)); | |
32f4334d | 2154 | |
265a9e55 | 2155 | if (NILP (ok_if_already_exists) |
93c30b5f | 2156 | || INTEGERP (ok_if_already_exists)) |
e5d77022 | 2157 | barf_or_query_if_file_exists (linkname, "make it a link", |
93c30b5f | 2158 | INTEGERP (ok_if_already_exists)); |
e5d77022 | 2159 | if (0 > symlink (XSTRING (filename)->data, XSTRING (linkname)->data)) |
570d7624 JB |
2160 | { |
2161 | /* If we didn't complain already, silently delete existing file. */ | |
2162 | if (errno == EEXIST) | |
2163 | { | |
9083124b | 2164 | unlink (XSTRING (linkname)->data); |
e5d77022 | 2165 | if (0 <= symlink (XSTRING (filename)->data, XSTRING (linkname)->data)) |
1a04498e KH |
2166 | { |
2167 | UNGCPRO; | |
2168 | return Qnil; | |
2169 | } | |
570d7624 JB |
2170 | } |
2171 | ||
2172 | #ifdef NO_ARG_ARRAY | |
2173 | args[0] = filename; | |
e5d77022 | 2174 | args[1] = linkname; |
570d7624 JB |
2175 | report_file_error ("Making symbolic link", Flist (2, args)); |
2176 | #else | |
2177 | report_file_error ("Making symbolic link", Flist (2, &filename)); | |
2178 | #endif | |
2179 | } | |
2180 | UNGCPRO; | |
2181 | return Qnil; | |
2182 | } | |
2183 | #endif /* S_IFLNK */ | |
2184 | ||
2185 | #ifdef VMS | |
2186 | ||
2187 | DEFUN ("define-logical-name", Fdefine_logical_name, Sdefine_logical_name, | |
2188 | 2, 2, "sDefine logical name: \nsDefine logical name %s as: ", | |
2189 | "Define the job-wide logical name NAME to have the value STRING.\n\ | |
2190 | If STRING is nil or a null string, the logical name NAME is deleted.") | |
2191 | (varname, string) | |
2192 | Lisp_Object varname; | |
2193 | Lisp_Object string; | |
2194 | { | |
2195 | CHECK_STRING (varname, 0); | |
265a9e55 | 2196 | if (NILP (string)) |
570d7624 JB |
2197 | delete_logical_name (XSTRING (varname)->data); |
2198 | else | |
2199 | { | |
2200 | CHECK_STRING (string, 1); | |
2201 | ||
2202 | if (XSTRING (string)->size == 0) | |
5e570b75 | 2203 | delete_logical_name (XSTRING (varname)->data); |
570d7624 | 2204 | else |
5e570b75 | 2205 | define_logical_name (XSTRING (varname)->data, XSTRING (string)->data); |
570d7624 JB |
2206 | } |
2207 | ||
2208 | return string; | |
2209 | } | |
2210 | #endif /* VMS */ | |
2211 | ||
2212 | #ifdef HPUX_NET | |
2213 | ||
2214 | DEFUN ("sysnetunam", Fsysnetunam, Ssysnetunam, 2, 2, 0, | |
2215 | "Open a network connection to PATH using LOGIN as the login string.") | |
2216 | (path, login) | |
2217 | Lisp_Object path, login; | |
2218 | { | |
2219 | int netresult; | |
2220 | ||
2221 | CHECK_STRING (path, 0); | |
2222 | CHECK_STRING (login, 0); | |
2223 | ||
2224 | netresult = netunam (XSTRING (path)->data, XSTRING (login)->data); | |
2225 | ||
2226 | if (netresult == -1) | |
2227 | return Qnil; | |
2228 | else | |
2229 | return Qt; | |
2230 | } | |
2231 | #endif /* HPUX_NET */ | |
2232 | \f | |
2233 | DEFUN ("file-name-absolute-p", Ffile_name_absolute_p, Sfile_name_absolute_p, | |
2234 | 1, 1, 0, | |
2235 | "Return t if file FILENAME specifies an absolute path name.\n\ | |
2236 | On Unix, this is a name starting with a `/' or a `~'.") | |
2237 | (filename) | |
2238 | Lisp_Object filename; | |
2239 | { | |
2240 | unsigned char *ptr; | |
2241 | ||
2242 | CHECK_STRING (filename, 0); | |
2243 | ptr = XSTRING (filename)->data; | |
5e570b75 | 2244 | if (IS_DIRECTORY_SEP (*ptr) || *ptr == '~' |
570d7624 JB |
2245 | #ifdef VMS |
2246 | /* ??? This criterion is probably wrong for '<'. */ | |
2247 | || index (ptr, ':') || index (ptr, '<') | |
2248 | || (*ptr == '[' && (ptr[1] != '-' || (ptr[2] != '.' && ptr[2] != ']')) | |
2249 | && ptr[1] != '.') | |
2250 | #endif /* VMS */ | |
5e570b75 | 2251 | #ifdef DOS_NT |
a5a1cc06 | 2252 | || (*ptr != 0 && ptr[1] == ':' && (ptr[2] == '/' || ptr[2] == '\\')) |
4c3c22f3 | 2253 | #endif |
570d7624 JB |
2254 | ) |
2255 | return Qt; | |
2256 | else | |
2257 | return Qnil; | |
2258 | } | |
3beeedfe RS |
2259 | \f |
2260 | /* Return nonzero if file FILENAME exists and can be executed. */ | |
2261 | ||
2262 | static int | |
2263 | check_executable (filename) | |
2264 | char *filename; | |
2265 | { | |
fcd2fe41 | 2266 | #ifdef HAVE_EACCESS |
b2728f4b | 2267 | return (eaccess (filename, 1) >= 0); |
3beeedfe RS |
2268 | #else |
2269 | /* Access isn't quite right because it uses the real uid | |
2270 | and we really want to test with the effective uid. | |
2271 | But Unix doesn't give us a right way to do it. */ | |
2272 | return (access (filename, 1) >= 0); | |
2273 | #endif | |
2274 | } | |
2275 | ||
2276 | /* Return nonzero if file FILENAME exists and can be written. */ | |
2277 | ||
2278 | static int | |
2279 | check_writable (filename) | |
2280 | char *filename; | |
2281 | { | |
fcd2fe41 | 2282 | #ifdef HAVE_EACCESS |
b2728f4b | 2283 | return (eaccess (filename, 2) >= 0); |
3beeedfe RS |
2284 | #else |
2285 | /* Access isn't quite right because it uses the real uid | |
2286 | and we really want to test with the effective uid. | |
2287 | But Unix doesn't give us a right way to do it. | |
2288 | Opening with O_WRONLY could work for an ordinary file, | |
2289 | but would lose for directories. */ | |
2290 | return (access (filename, 2) >= 0); | |
2291 | #endif | |
2292 | } | |
570d7624 JB |
2293 | |
2294 | DEFUN ("file-exists-p", Ffile_exists_p, Sfile_exists_p, 1, 1, 0, | |
2295 | "Return t if file FILENAME exists. (This does not mean you can read it.)\n\ | |
2296 | See also `file-readable-p' and `file-attributes'.") | |
2297 | (filename) | |
2298 | Lisp_Object filename; | |
2299 | { | |
2300 | Lisp_Object abspath; | |
32f4334d | 2301 | Lisp_Object handler; |
4018b5ef | 2302 | struct stat statbuf; |
570d7624 JB |
2303 | |
2304 | CHECK_STRING (filename, 0); | |
2305 | abspath = Fexpand_file_name (filename, Qnil); | |
32f4334d RS |
2306 | |
2307 | /* If the file name has special constructs in it, | |
2308 | call the corresponding file handler. */ | |
49307295 | 2309 | handler = Ffind_file_name_handler (abspath, Qfile_exists_p); |
32f4334d | 2310 | if (!NILP (handler)) |
09121adc | 2311 | return call2 (handler, Qfile_exists_p, abspath); |
32f4334d | 2312 | |
4018b5ef | 2313 | return (stat (XSTRING (abspath)->data, &statbuf) >= 0) ? Qt : Qnil; |
570d7624 JB |
2314 | } |
2315 | ||
2316 | DEFUN ("file-executable-p", Ffile_executable_p, Sfile_executable_p, 1, 1, 0, | |
2317 | "Return t if FILENAME can be executed by you.\n\ | |
8b235fde | 2318 | For a directory, this means you can access files in that directory.") |
570d7624 JB |
2319 | (filename) |
2320 | Lisp_Object filename; | |
2321 | ||
2322 | { | |
2323 | Lisp_Object abspath; | |
32f4334d | 2324 | Lisp_Object handler; |
570d7624 JB |
2325 | |
2326 | CHECK_STRING (filename, 0); | |
2327 | abspath = Fexpand_file_name (filename, Qnil); | |
32f4334d RS |
2328 | |
2329 | /* If the file name has special constructs in it, | |
2330 | call the corresponding file handler. */ | |
49307295 | 2331 | handler = Ffind_file_name_handler (abspath, Qfile_executable_p); |
32f4334d | 2332 | if (!NILP (handler)) |
09121adc | 2333 | return call2 (handler, Qfile_executable_p, abspath); |
32f4334d | 2334 | |
3beeedfe | 2335 | return (check_executable (XSTRING (abspath)->data) ? Qt : Qnil); |
570d7624 JB |
2336 | } |
2337 | ||
2338 | DEFUN ("file-readable-p", Ffile_readable_p, Sfile_readable_p, 1, 1, 0, | |
2339 | "Return t if file FILENAME exists and you can read it.\n\ | |
2340 | See also `file-exists-p' and `file-attributes'.") | |
2341 | (filename) | |
2342 | Lisp_Object filename; | |
2343 | { | |
2344 | Lisp_Object abspath; | |
32f4334d | 2345 | Lisp_Object handler; |
4018b5ef | 2346 | int desc; |
570d7624 JB |
2347 | |
2348 | CHECK_STRING (filename, 0); | |
2349 | abspath = Fexpand_file_name (filename, Qnil); | |
32f4334d RS |
2350 | |
2351 | /* If the file name has special constructs in it, | |
2352 | call the corresponding file handler. */ | |
49307295 | 2353 | handler = Ffind_file_name_handler (abspath, Qfile_readable_p); |
32f4334d | 2354 | if (!NILP (handler)) |
09121adc | 2355 | return call2 (handler, Qfile_readable_p, abspath); |
32f4334d | 2356 | |
4018b5ef RS |
2357 | desc = open (XSTRING (abspath)->data, O_RDONLY); |
2358 | if (desc < 0) | |
2359 | return Qnil; | |
2360 | close (desc); | |
2361 | return Qt; | |
570d7624 JB |
2362 | } |
2363 | ||
f793dc6c RS |
2364 | /* Having this before file-symlink-p mysteriously caused it to be forgotten |
2365 | on the RT/PC. */ | |
2366 | DEFUN ("file-writable-p", Ffile_writable_p, Sfile_writable_p, 1, 1, 0, | |
2367 | "Return t if file FILENAME can be written or created by you.") | |
2368 | (filename) | |
2369 | Lisp_Object filename; | |
2370 | { | |
2371 | Lisp_Object abspath, dir; | |
2372 | Lisp_Object handler; | |
2373 | struct stat statbuf; | |
2374 | ||
2375 | CHECK_STRING (filename, 0); | |
2376 | abspath = Fexpand_file_name (filename, Qnil); | |
2377 | ||
2378 | /* If the file name has special constructs in it, | |
2379 | call the corresponding file handler. */ | |
2380 | handler = Ffind_file_name_handler (abspath, Qfile_writable_p); | |
2381 | if (!NILP (handler)) | |
2382 | return call2 (handler, Qfile_writable_p, abspath); | |
2383 | ||
2384 | if (stat (XSTRING (abspath)->data, &statbuf) >= 0) | |
2385 | return (check_writable (XSTRING (abspath)->data) | |
2386 | ? Qt : Qnil); | |
2387 | dir = Ffile_name_directory (abspath); | |
2388 | #ifdef VMS | |
2389 | if (!NILP (dir)) | |
2390 | dir = Fdirectory_file_name (dir); | |
2391 | #endif /* VMS */ | |
2392 | #ifdef MSDOS | |
2393 | if (!NILP (dir)) | |
2394 | dir = Fdirectory_file_name (dir); | |
2395 | #endif /* MSDOS */ | |
2396 | return (check_writable (!NILP (dir) ? (char *) XSTRING (dir)->data : "") | |
2397 | ? Qt : Qnil); | |
2398 | } | |
2399 | \f | |
570d7624 | 2400 | DEFUN ("file-symlink-p", Ffile_symlink_p, Sfile_symlink_p, 1, 1, 0, |
89de89c7 RS |
2401 | "Return non-nil if file FILENAME is the name of a symbolic link.\n\ |
2402 | The value is the name of the file to which it is linked.\n\ | |
2403 | Otherwise returns nil.") | |
570d7624 JB |
2404 | (filename) |
2405 | Lisp_Object filename; | |
2406 | { | |
2407 | #ifdef S_IFLNK | |
2408 | char *buf; | |
2409 | int bufsize; | |
2410 | int valsize; | |
2411 | Lisp_Object val; | |
32f4334d | 2412 | Lisp_Object handler; |
570d7624 JB |
2413 | |
2414 | CHECK_STRING (filename, 0); | |
2415 | filename = Fexpand_file_name (filename, Qnil); | |
2416 | ||
32f4334d RS |
2417 | /* If the file name has special constructs in it, |
2418 | call the corresponding file handler. */ | |
49307295 | 2419 | handler = Ffind_file_name_handler (filename, Qfile_symlink_p); |
32f4334d RS |
2420 | if (!NILP (handler)) |
2421 | return call2 (handler, Qfile_symlink_p, filename); | |
2422 | ||
570d7624 JB |
2423 | bufsize = 100; |
2424 | while (1) | |
2425 | { | |
2426 | buf = (char *) xmalloc (bufsize); | |
2427 | bzero (buf, bufsize); | |
2428 | valsize = readlink (XSTRING (filename)->data, buf, bufsize); | |
2429 | if (valsize < bufsize) break; | |
2430 | /* Buffer was not long enough */ | |
9ac0d9e0 | 2431 | xfree (buf); |
570d7624 JB |
2432 | bufsize *= 2; |
2433 | } | |
2434 | if (valsize == -1) | |
2435 | { | |
9ac0d9e0 | 2436 | xfree (buf); |
570d7624 JB |
2437 | return Qnil; |
2438 | } | |
2439 | val = make_string (buf, valsize); | |
9ac0d9e0 | 2440 | xfree (buf); |
570d7624 JB |
2441 | return val; |
2442 | #else /* not S_IFLNK */ | |
2443 | return Qnil; | |
2444 | #endif /* not S_IFLNK */ | |
2445 | } | |
2446 | ||
570d7624 JB |
2447 | DEFUN ("file-directory-p", Ffile_directory_p, Sfile_directory_p, 1, 1, 0, |
2448 | "Return t if file FILENAME is the name of a directory as a file.\n\ | |
2449 | A directory name spec may be given instead; then the value is t\n\ | |
2450 | if the directory so specified exists and really is a directory.") | |
2451 | (filename) | |
2452 | Lisp_Object filename; | |
2453 | { | |
2454 | register Lisp_Object abspath; | |
2455 | struct stat st; | |
32f4334d | 2456 | Lisp_Object handler; |
570d7624 JB |
2457 | |
2458 | abspath = expand_and_dir_to_file (filename, current_buffer->directory); | |
2459 | ||
32f4334d RS |
2460 | /* If the file name has special constructs in it, |
2461 | call the corresponding file handler. */ | |
49307295 | 2462 | handler = Ffind_file_name_handler (abspath, Qfile_directory_p); |
32f4334d | 2463 | if (!NILP (handler)) |
09121adc | 2464 | return call2 (handler, Qfile_directory_p, abspath); |
32f4334d | 2465 | |
570d7624 JB |
2466 | if (stat (XSTRING (abspath)->data, &st) < 0) |
2467 | return Qnil; | |
2468 | return (st.st_mode & S_IFMT) == S_IFDIR ? Qt : Qnil; | |
2469 | } | |
2470 | ||
b72dea2a JB |
2471 | DEFUN ("file-accessible-directory-p", Ffile_accessible_directory_p, Sfile_accessible_directory_p, 1, 1, 0, |
2472 | "Return t if file FILENAME is the name of a directory as a file,\n\ | |
2473 | and files in that directory can be opened by you. In order to use a\n\ | |
2474 | directory as a buffer's current directory, this predicate must return true.\n\ | |
2475 | A directory name spec may be given instead; then the value is t\n\ | |
2476 | if the directory so specified exists and really is a readable and\n\ | |
2477 | searchable directory.") | |
2478 | (filename) | |
2479 | Lisp_Object filename; | |
2480 | { | |
32f4334d | 2481 | Lisp_Object handler; |
1a04498e | 2482 | int tem; |
d26859eb | 2483 | struct gcpro gcpro1; |
32f4334d RS |
2484 | |
2485 | /* If the file name has special constructs in it, | |
2486 | call the corresponding file handler. */ | |
49307295 | 2487 | handler = Ffind_file_name_handler (filename, Qfile_accessible_directory_p); |
32f4334d RS |
2488 | if (!NILP (handler)) |
2489 | return call2 (handler, Qfile_accessible_directory_p, filename); | |
2490 | ||
d26859eb KH |
2491 | /* It's an unlikely combination, but yes we really do need to gcpro: |
2492 | Suppose that file-accessible-directory-p has no handler, but | |
2493 | file-directory-p does have a handler; this handler causes a GC which | |
2494 | relocates the string in `filename'; and finally file-directory-p | |
2495 | returns non-nil. Then we would end up passing a garbaged string | |
2496 | to file-executable-p. */ | |
2497 | GCPRO1 (filename); | |
1a04498e KH |
2498 | tem = (NILP (Ffile_directory_p (filename)) |
2499 | || NILP (Ffile_executable_p (filename))); | |
d26859eb | 2500 | UNGCPRO; |
1a04498e | 2501 | return tem ? Qnil : Qt; |
b72dea2a JB |
2502 | } |
2503 | ||
f793dc6c RS |
2504 | DEFUN ("file-regular-p", Ffile_regular_p, Sfile_regular_p, 1, 1, 0, |
2505 | "Return t if file FILENAME is the name of a regular file.\n\ | |
2506 | This is the sort of file that holds an ordinary stream of data bytes.") | |
2507 | (filename) | |
2508 | Lisp_Object filename; | |
2509 | { | |
2510 | register Lisp_Object abspath; | |
2511 | struct stat st; | |
2512 | Lisp_Object handler; | |
2513 | ||
2514 | abspath = expand_and_dir_to_file (filename, current_buffer->directory); | |
2515 | ||
2516 | /* If the file name has special constructs in it, | |
2517 | call the corresponding file handler. */ | |
2518 | handler = Ffind_file_name_handler (abspath, Qfile_directory_p); | |
2519 | if (!NILP (handler)) | |
2520 | return call2 (handler, Qfile_directory_p, abspath); | |
2521 | ||
2522 | if (stat (XSTRING (abspath)->data, &st) < 0) | |
2523 | return Qnil; | |
2524 | return (st.st_mode & S_IFMT) == S_IFREG ? Qt : Qnil; | |
2525 | } | |
2526 | \f | |
570d7624 JB |
2527 | DEFUN ("file-modes", Ffile_modes, Sfile_modes, 1, 1, 0, |
2528 | "Return mode bits of FILE, as an integer.") | |
2529 | (filename) | |
2530 | Lisp_Object filename; | |
2531 | { | |
2532 | Lisp_Object abspath; | |
2533 | struct stat st; | |
32f4334d | 2534 | Lisp_Object handler; |
570d7624 JB |
2535 | |
2536 | abspath = expand_and_dir_to_file (filename, current_buffer->directory); | |
2537 | ||
32f4334d RS |
2538 | /* If the file name has special constructs in it, |
2539 | call the corresponding file handler. */ | |
49307295 | 2540 | handler = Ffind_file_name_handler (abspath, Qfile_modes); |
32f4334d | 2541 | if (!NILP (handler)) |
09121adc | 2542 | return call2 (handler, Qfile_modes, abspath); |
32f4334d | 2543 | |
570d7624 JB |
2544 | if (stat (XSTRING (abspath)->data, &st) < 0) |
2545 | return Qnil; | |
5e570b75 | 2546 | #ifdef DOS_NT |
3ace87e3 KH |
2547 | { |
2548 | int len; | |
2549 | char *suffix; | |
2550 | if (S_ISREG (st.st_mode) | |
2551 | && (len = XSTRING (abspath)->size) >= 5 | |
2552 | && (stricmp ((suffix = XSTRING (abspath)->data + len-4), ".com") == 0 | |
2553 | || stricmp (suffix, ".exe") == 0 | |
2554 | || stricmp (suffix, ".bat") == 0)) | |
2555 | st.st_mode |= S_IEXEC; | |
2556 | } | |
5e570b75 | 2557 | #endif /* DOS_NT */ |
3ace87e3 | 2558 | |
570d7624 JB |
2559 | return make_number (st.st_mode & 07777); |
2560 | } | |
2561 | ||
2562 | DEFUN ("set-file-modes", Fset_file_modes, Sset_file_modes, 2, 2, 0, | |
2563 | "Set mode bits of FILE to MODE (an integer).\n\ | |
2564 | Only the 12 low bits of MODE are used.") | |
2565 | (filename, mode) | |
2566 | Lisp_Object filename, mode; | |
2567 | { | |
2568 | Lisp_Object abspath; | |
32f4334d | 2569 | Lisp_Object handler; |
570d7624 JB |
2570 | |
2571 | abspath = Fexpand_file_name (filename, current_buffer->directory); | |
2572 | CHECK_NUMBER (mode, 1); | |
2573 | ||
32f4334d RS |
2574 | /* If the file name has special constructs in it, |
2575 | call the corresponding file handler. */ | |
49307295 | 2576 | handler = Ffind_file_name_handler (abspath, Qset_file_modes); |
32f4334d | 2577 | if (!NILP (handler)) |
09121adc | 2578 | return call3 (handler, Qset_file_modes, abspath, mode); |
32f4334d | 2579 | |
570d7624 JB |
2580 | #ifndef APOLLO |
2581 | if (chmod (XSTRING (abspath)->data, XINT (mode)) < 0) | |
2582 | report_file_error ("Doing chmod", Fcons (abspath, Qnil)); | |
2583 | #else /* APOLLO */ | |
2584 | if (!egetenv ("USE_DOMAIN_ACLS")) | |
2585 | { | |
2586 | struct stat st; | |
2587 | struct timeval tvp[2]; | |
2588 | ||
2589 | /* chmod on apollo also change the file's modtime; need to save the | |
2590 | modtime and then restore it. */ | |
2591 | if (stat (XSTRING (abspath)->data, &st) < 0) | |
2592 | { | |
2593 | report_file_error ("Doing chmod", Fcons (abspath, Qnil)); | |
2594 | return (Qnil); | |
2595 | } | |
2596 | ||
2597 | if (chmod (XSTRING (abspath)->data, XINT (mode)) < 0) | |
5e570b75 | 2598 | report_file_error ("Doing chmod", Fcons (abspath, Qnil)); |
570d7624 JB |
2599 | |
2600 | /* reset the old accessed and modified times. */ | |
2601 | tvp[0].tv_sec = st.st_atime + 1; /* +1 due to an Apollo roundoff bug */ | |
2602 | tvp[0].tv_usec = 0; | |
2603 | tvp[1].tv_sec = st.st_mtime + 1; /* +1 due to an Apollo roundoff bug */ | |
2604 | tvp[1].tv_usec = 0; | |
2605 | ||
2606 | if (utimes (XSTRING (abspath)->data, tvp) < 0) | |
5e570b75 | 2607 | report_file_error ("Doing utimes", Fcons (abspath, Qnil)); |
570d7624 JB |
2608 | } |
2609 | #endif /* APOLLO */ | |
2610 | ||
2611 | return Qnil; | |
2612 | } | |
2613 | ||
c24e9a53 | 2614 | DEFUN ("set-default-file-modes", Fset_default_file_modes, Sset_default_file_modes, 1, 1, 0, |
5f85ea58 RS |
2615 | "Set the file permission bits for newly created files.\n\ |
2616 | The argument MODE should be an integer; only the low 9 bits are used.\n\ | |
36a8c287 | 2617 | This setting is inherited by subprocesses.") |
5f85ea58 RS |
2618 | (mode) |
2619 | Lisp_Object mode; | |
36a8c287 | 2620 | { |
5f85ea58 | 2621 | CHECK_NUMBER (mode, 0); |
36a8c287 | 2622 | |
5f85ea58 | 2623 | umask ((~ XINT (mode)) & 0777); |
36a8c287 JB |
2624 | |
2625 | return Qnil; | |
2626 | } | |
2627 | ||
c24e9a53 | 2628 | DEFUN ("default-file-modes", Fdefault_file_modes, Sdefault_file_modes, 0, 0, 0, |
5f85ea58 RS |
2629 | "Return the default file protection for created files.\n\ |
2630 | The value is an integer.") | |
36a8c287 JB |
2631 | () |
2632 | { | |
5f85ea58 RS |
2633 | int realmask; |
2634 | Lisp_Object value; | |
36a8c287 | 2635 | |
5f85ea58 RS |
2636 | realmask = umask (0); |
2637 | umask (realmask); | |
36a8c287 | 2638 | |
46283abe | 2639 | XSETINT (value, (~ realmask) & 0777); |
5f85ea58 | 2640 | return value; |
36a8c287 | 2641 | } |
f793dc6c | 2642 | \f |
85ffea93 RS |
2643 | #ifdef unix |
2644 | ||
2645 | DEFUN ("unix-sync", Funix_sync, Sunix_sync, 0, 0, "", | |
2646 | "Tell Unix to finish all pending disk updates.") | |
2647 | () | |
2648 | { | |
2649 | sync (); | |
2650 | return Qnil; | |
2651 | } | |
2652 | ||
2653 | #endif /* unix */ | |
2654 | ||
570d7624 JB |
2655 | DEFUN ("file-newer-than-file-p", Ffile_newer_than_file_p, Sfile_newer_than_file_p, 2, 2, 0, |
2656 | "Return t if file FILE1 is newer than file FILE2.\n\ | |
2657 | If FILE1 does not exist, the answer is nil;\n\ | |
2658 | otherwise, if FILE2 does not exist, the answer is t.") | |
2659 | (file1, file2) | |
2660 | Lisp_Object file1, file2; | |
2661 | { | |
32f4334d | 2662 | Lisp_Object abspath1, abspath2; |
570d7624 JB |
2663 | struct stat st; |
2664 | int mtime1; | |
32f4334d | 2665 | Lisp_Object handler; |
09121adc | 2666 | struct gcpro gcpro1, gcpro2; |
570d7624 JB |
2667 | |
2668 | CHECK_STRING (file1, 0); | |
2669 | CHECK_STRING (file2, 0); | |
2670 | ||
09121adc RS |
2671 | abspath1 = Qnil; |
2672 | GCPRO2 (abspath1, file2); | |
32f4334d RS |
2673 | abspath1 = expand_and_dir_to_file (file1, current_buffer->directory); |
2674 | abspath2 = expand_and_dir_to_file (file2, current_buffer->directory); | |
09121adc | 2675 | UNGCPRO; |
570d7624 | 2676 | |
32f4334d RS |
2677 | /* If the file name has special constructs in it, |
2678 | call the corresponding file handler. */ | |
49307295 | 2679 | handler = Ffind_file_name_handler (abspath1, Qfile_newer_than_file_p); |
51cf6d37 | 2680 | if (NILP (handler)) |
49307295 | 2681 | handler = Ffind_file_name_handler (abspath2, Qfile_newer_than_file_p); |
32f4334d RS |
2682 | if (!NILP (handler)) |
2683 | return call3 (handler, Qfile_newer_than_file_p, abspath1, abspath2); | |
2684 | ||
2685 | if (stat (XSTRING (abspath1)->data, &st) < 0) | |
570d7624 JB |
2686 | return Qnil; |
2687 | ||
2688 | mtime1 = st.st_mtime; | |
2689 | ||
32f4334d | 2690 | if (stat (XSTRING (abspath2)->data, &st) < 0) |
570d7624 JB |
2691 | return Qt; |
2692 | ||
2693 | return (mtime1 > st.st_mtime) ? Qt : Qnil; | |
2694 | } | |
2695 | \f | |
5e570b75 | 2696 | #ifdef DOS_NT |
4c3c22f3 | 2697 | Lisp_Object Qfind_buffer_file_type; |
5e570b75 | 2698 | #endif /* DOS_NT */ |
4c3c22f3 | 2699 | |
570d7624 | 2700 | DEFUN ("insert-file-contents", Finsert_file_contents, Sinsert_file_contents, |
3d0387c0 | 2701 | 1, 5, 0, |
570d7624 | 2702 | "Insert contents of file FILENAME after point.\n\ |
7fded690 | 2703 | Returns list of absolute file name and length of data inserted.\n\ |
570d7624 JB |
2704 | If second argument VISIT is non-nil, the buffer's visited filename\n\ |
2705 | and last save file modtime are set, and it is marked unmodified.\n\ | |
2706 | If visiting and the file does not exist, visiting is completed\n\ | |
7fded690 JB |
2707 | before the error is signaled.\n\n\ |
2708 | The optional third and fourth arguments BEG and END\n\ | |
2709 | specify what portion of the file to insert.\n\ | |
3d0387c0 RS |
2710 | If VISIT is non-nil, BEG and END must be nil.\n\ |
2711 | If optional fifth argument REPLACE is non-nil,\n\ | |
2712 | it means replace the current buffer contents (in the accessible portion)\n\ | |
2713 | with the file contents. This is better than simply deleting and inserting\n\ | |
2714 | the whole thing because (1) it preserves some marker positions\n\ | |
2715 | and (2) it puts less data in the undo list.") | |
2716 | (filename, visit, beg, end, replace) | |
2717 | Lisp_Object filename, visit, beg, end, replace; | |
570d7624 JB |
2718 | { |
2719 | struct stat st; | |
2720 | register int fd; | |
2721 | register int inserted = 0; | |
2722 | register int how_much; | |
2723 | int count = specpdl_ptr - specpdl; | |
1a04498e | 2724 | struct gcpro gcpro1, gcpro2, gcpro3; |
d6a3cc15 RS |
2725 | Lisp_Object handler, val, insval; |
2726 | Lisp_Object p; | |
7fded690 | 2727 | int total; |
53c34c46 | 2728 | int not_regular = 0; |
32f4334d RS |
2729 | |
2730 | val = Qnil; | |
d6a3cc15 | 2731 | p = Qnil; |
32f4334d | 2732 | |
1a04498e | 2733 | GCPRO3 (filename, val, p); |
265a9e55 | 2734 | if (!NILP (current_buffer->read_only)) |
570d7624 JB |
2735 | Fbarf_if_buffer_read_only(); |
2736 | ||
2737 | CHECK_STRING (filename, 0); | |
2738 | filename = Fexpand_file_name (filename, Qnil); | |
2739 | ||
32f4334d RS |
2740 | /* If the file name has special constructs in it, |
2741 | call the corresponding file handler. */ | |
49307295 | 2742 | handler = Ffind_file_name_handler (filename, Qinsert_file_contents); |
32f4334d RS |
2743 | if (!NILP (handler)) |
2744 | { | |
3d0387c0 RS |
2745 | val = call6 (handler, Qinsert_file_contents, filename, |
2746 | visit, beg, end, replace); | |
32f4334d RS |
2747 | goto handled; |
2748 | } | |
2749 | ||
570d7624 JB |
2750 | fd = -1; |
2751 | ||
2752 | #ifndef APOLLO | |
99bc28f4 | 2753 | if (stat (XSTRING (filename)->data, &st) < 0) |
570d7624 | 2754 | #else |
4018b5ef | 2755 | if ((fd = open (XSTRING (filename)->data, O_RDONLY)) < 0 |
570d7624 JB |
2756 | || fstat (fd, &st) < 0) |
2757 | #endif /* not APOLLO */ | |
2758 | { | |
2759 | if (fd >= 0) close (fd); | |
99bc28f4 | 2760 | badopen: |
265a9e55 | 2761 | if (NILP (visit)) |
570d7624 JB |
2762 | report_file_error ("Opening input file", Fcons (filename, Qnil)); |
2763 | st.st_mtime = -1; | |
2764 | how_much = 0; | |
2765 | goto notfound; | |
2766 | } | |
2767 | ||
99bc28f4 | 2768 | #ifdef S_IFREG |
be53b411 JB |
2769 | /* This code will need to be changed in order to work on named |
2770 | pipes, and it's probably just not worth it. So we should at | |
2771 | least signal an error. */ | |
99bc28f4 | 2772 | if (!S_ISREG (st.st_mode)) |
330bfe57 RS |
2773 | { |
2774 | if (NILP (visit)) | |
2775 | Fsignal (Qfile_error, | |
2776 | Fcons (build_string ("not a regular file"), | |
2777 | Fcons (filename, Qnil))); | |
2778 | ||
2779 | not_regular = 1; | |
2780 | goto notfound; | |
2781 | } | |
be53b411 JB |
2782 | #endif |
2783 | ||
99bc28f4 | 2784 | if (fd < 0) |
4018b5ef | 2785 | if ((fd = open (XSTRING (filename)->data, O_RDONLY)) < 0) |
99bc28f4 KH |
2786 | goto badopen; |
2787 | ||
2788 | /* Replacement should preserve point as it preserves markers. */ | |
2789 | if (!NILP (replace)) | |
2790 | record_unwind_protect (restore_point_unwind, Fpoint_marker ()); | |
2791 | ||
2792 | record_unwind_protect (close_file_unwind, make_number (fd)); | |
2793 | ||
570d7624 JB |
2794 | /* Supposedly happens on VMS. */ |
2795 | if (st.st_size < 0) | |
2796 | error ("File size is negative"); | |
be53b411 | 2797 | |
7fded690 JB |
2798 | if (!NILP (beg) || !NILP (end)) |
2799 | if (!NILP (visit)) | |
2800 | error ("Attempt to visit less than an entire file"); | |
2801 | ||
2802 | if (!NILP (beg)) | |
2803 | CHECK_NUMBER (beg, 0); | |
2804 | else | |
2acfd7ae | 2805 | XSETFASTINT (beg, 0); |
7fded690 JB |
2806 | |
2807 | if (!NILP (end)) | |
2808 | CHECK_NUMBER (end, 0); | |
2809 | else | |
2810 | { | |
2811 | XSETINT (end, st.st_size); | |
2812 | if (XINT (end) != st.st_size) | |
2813 | error ("maximum buffer size exceeded"); | |
2814 | } | |
2815 | ||
3d0387c0 RS |
2816 | /* If requested, replace the accessible part of the buffer |
2817 | with the file contents. Avoid replacing text at the | |
2818 | beginning or end of the buffer that matches the file contents; | |
2819 | that preserves markers pointing to the unchanged parts. */ | |
5e570b75 | 2820 | #ifdef DOS_NT |
e54d3b5d RS |
2821 | /* On MSDOS, replace mode doesn't really work, except for binary files, |
2822 | and it's not worth supporting just for them. */ | |
2823 | if (!NILP (replace)) | |
2824 | { | |
2825 | replace = Qnil; | |
2acfd7ae KH |
2826 | XSETFASTINT (beg, 0); |
2827 | XSETFASTINT (end, st.st_size); | |
e54d3b5d RS |
2828 | del_range_1 (BEGV, ZV, 0); |
2829 | } | |
5e570b75 | 2830 | #else /* not DOS_NT */ |
3d0387c0 RS |
2831 | if (!NILP (replace)) |
2832 | { | |
268466ed | 2833 | unsigned char buffer[1 << 14]; |
3d0387c0 RS |
2834 | int same_at_start = BEGV; |
2835 | int same_at_end = ZV; | |
9c28748f RS |
2836 | int overlap; |
2837 | ||
3d0387c0 RS |
2838 | immediate_quit = 1; |
2839 | QUIT; | |
2840 | /* Count how many chars at the start of the file | |
2841 | match the text at the beginning of the buffer. */ | |
2842 | while (1) | |
2843 | { | |
2844 | int nread, bufpos; | |
2845 | ||
2846 | nread = read (fd, buffer, sizeof buffer); | |
2847 | if (nread < 0) | |
2848 | error ("IO error reading %s: %s", | |
2849 | XSTRING (filename)->data, strerror (errno)); | |
2850 | else if (nread == 0) | |
2851 | break; | |
2852 | bufpos = 0; | |
2853 | while (bufpos < nread && same_at_start < ZV | |
2854 | && FETCH_CHAR (same_at_start) == buffer[bufpos]) | |
2855 | same_at_start++, bufpos++; | |
2856 | /* If we found a discrepancy, stop the scan. | |
2857 | Otherwise loop around and scan the next bufferfull. */ | |
2858 | if (bufpos != nread) | |
2859 | break; | |
2860 | } | |
2861 | immediate_quit = 0; | |
2862 | /* If the file matches the buffer completely, | |
2863 | there's no need to replace anything. */ | |
1051b3b3 | 2864 | if (same_at_start - BEGV == st.st_size) |
3d0387c0 RS |
2865 | { |
2866 | close (fd); | |
a1d2b64a | 2867 | specpdl_ptr--; |
1051b3b3 RS |
2868 | /* Truncate the buffer to the size of the file. */ |
2869 | del_range_1 (same_at_start, same_at_end, 0); | |
3d0387c0 RS |
2870 | goto handled; |
2871 | } | |
2872 | immediate_quit = 1; | |
2873 | QUIT; | |
2874 | /* Count how many chars at the end of the file | |
2875 | match the text at the end of the buffer. */ | |
2876 | while (1) | |
2877 | { | |
2878 | int total_read, nread, bufpos, curpos, trial; | |
2879 | ||
2880 | /* At what file position are we now scanning? */ | |
2881 | curpos = st.st_size - (ZV - same_at_end); | |
fc81fa9e KH |
2882 | /* If the entire file matches the buffer tail, stop the scan. */ |
2883 | if (curpos == 0) | |
2884 | break; | |
3d0387c0 RS |
2885 | /* How much can we scan in the next step? */ |
2886 | trial = min (curpos, sizeof buffer); | |
2887 | if (lseek (fd, curpos - trial, 0) < 0) | |
2888 | report_file_error ("Setting file position", | |
2889 | Fcons (filename, Qnil)); | |
2890 | ||
2891 | total_read = 0; | |
2892 | while (total_read < trial) | |
2893 | { | |
2894 | nread = read (fd, buffer + total_read, trial - total_read); | |
2895 | if (nread <= 0) | |
2896 | error ("IO error reading %s: %s", | |
2897 | XSTRING (filename)->data, strerror (errno)); | |
2898 | total_read += nread; | |
2899 | } | |
2900 | /* Scan this bufferfull from the end, comparing with | |
2901 | the Emacs buffer. */ | |
2902 | bufpos = total_read; | |
2903 | /* Compare with same_at_start to avoid counting some buffer text | |
2904 | as matching both at the file's beginning and at the end. */ | |
2905 | while (bufpos > 0 && same_at_end > same_at_start | |
2906 | && FETCH_CHAR (same_at_end - 1) == buffer[bufpos - 1]) | |
2907 | same_at_end--, bufpos--; | |
2908 | /* If we found a discrepancy, stop the scan. | |
2909 | Otherwise loop around and scan the preceding bufferfull. */ | |
2910 | if (bufpos != 0) | |
2911 | break; | |
2912 | } | |
2913 | immediate_quit = 0; | |
9c28748f RS |
2914 | |
2915 | /* Don't try to reuse the same piece of text twice. */ | |
2916 | overlap = same_at_start - BEGV - (same_at_end + st.st_size - ZV); | |
2917 | if (overlap > 0) | |
2918 | same_at_end += overlap; | |
2919 | ||
3d0387c0 | 2920 | /* Arrange to read only the nonmatching middle part of the file. */ |
2acfd7ae KH |
2921 | XSETFASTINT (beg, same_at_start - BEGV); |
2922 | XSETFASTINT (end, st.st_size - (ZV - same_at_end)); | |
9c28748f | 2923 | |
251f623e | 2924 | del_range_1 (same_at_start, same_at_end, 0); |
a1d2b64a RS |
2925 | /* Insert from the file at the proper position. */ |
2926 | SET_PT (same_at_start); | |
3d0387c0 | 2927 | } |
5e570b75 | 2928 | #endif /* not DOS_NT */ |
3d0387c0 | 2929 | |
7fded690 JB |
2930 | total = XINT (end) - XINT (beg); |
2931 | ||
570d7624 JB |
2932 | { |
2933 | register Lisp_Object temp; | |
2934 | ||
2935 | /* Make sure point-max won't overflow after this insertion. */ | |
46283abe | 2936 | XSETINT (temp, total); |
7fded690 | 2937 | if (total != XINT (temp)) |
570d7624 JB |
2938 | error ("maximum buffer size exceeded"); |
2939 | } | |
2940 | ||
57d8d468 | 2941 | if (NILP (visit) && total > 0) |
570d7624 JB |
2942 | prepare_to_modify_buffer (point, point); |
2943 | ||
2944 | move_gap (point); | |
7fded690 JB |
2945 | if (GAP_SIZE < total) |
2946 | make_gap (total - GAP_SIZE); | |
2947 | ||
a1d2b64a | 2948 | if (XINT (beg) != 0 || !NILP (replace)) |
7fded690 JB |
2949 | { |
2950 | if (lseek (fd, XINT (beg), 0) < 0) | |
2951 | report_file_error ("Setting file position", Fcons (filename, Qnil)); | |
2952 | } | |
2953 | ||
a1d2b64a RS |
2954 | how_much = 0; |
2955 | while (inserted < total) | |
570d7624 | 2956 | { |
5e570b75 RS |
2957 | /* try is reserved in some compilers (Microsoft C) */ |
2958 | int trytry = min (total - inserted, 64 << 10); | |
b5148e85 RS |
2959 | int this; |
2960 | ||
2961 | /* Allow quitting out of the actual I/O. */ | |
2962 | immediate_quit = 1; | |
2963 | QUIT; | |
5e570b75 | 2964 | this = read (fd, &FETCH_CHAR (point + inserted - 1) + 1, trytry); |
b5148e85 | 2965 | immediate_quit = 0; |
570d7624 JB |
2966 | |
2967 | if (this <= 0) | |
2968 | { | |
2969 | how_much = this; | |
2970 | break; | |
2971 | } | |
2972 | ||
2973 | GPT += this; | |
2974 | GAP_SIZE -= this; | |
2975 | ZV += this; | |
2976 | Z += this; | |
2977 | inserted += this; | |
2978 | } | |
2979 | ||
5e570b75 | 2980 | #ifdef DOS_NT |
4c3c22f3 RS |
2981 | /* Demacs 1.1.1 91/10/16 HIRANO Satoshi, MW July 1993 */ |
2982 | /* Determine file type from name and remove LFs from CR-LFs if the file | |
2983 | is deemed to be a text file. */ | |
2984 | { | |
bf162ea8 RS |
2985 | current_buffer->buffer_file_type |
2986 | = call1 (Qfind_buffer_file_type, filename); | |
bf162ea8 | 2987 | if (NILP (current_buffer->buffer_file_type)) |
4c3c22f3 | 2988 | { |
a1d2b64a RS |
2989 | int reduced_size |
2990 | = inserted - crlf_to_lf (inserted, &FETCH_CHAR (point - 1) + 1); | |
4c3c22f3 RS |
2991 | ZV -= reduced_size; |
2992 | Z -= reduced_size; | |
2993 | GPT -= reduced_size; | |
2994 | GAP_SIZE += reduced_size; | |
2995 | inserted -= reduced_size; | |
2996 | } | |
2997 | } | |
5e570b75 | 2998 | #endif /* DOS_NT */ |
4c3c22f3 | 2999 | |
570d7624 | 3000 | if (inserted > 0) |
7d8451f1 RS |
3001 | { |
3002 | record_insert (point, inserted); | |
8d4e077b JA |
3003 | |
3004 | /* Only defined if Emacs is compiled with USE_TEXT_PROPERTIES */ | |
3005 | offset_intervals (current_buffer, point, inserted); | |
7d8451f1 RS |
3006 | MODIFF++; |
3007 | } | |
570d7624 JB |
3008 | |
3009 | close (fd); | |
3010 | ||
a1d2b64a RS |
3011 | /* Discard the unwind protect for closing the file. */ |
3012 | specpdl_ptr--; | |
570d7624 JB |
3013 | |
3014 | if (how_much < 0) | |
3015 | error ("IO error reading %s: %s", | |
ce97267f | 3016 | XSTRING (filename)->data, strerror (errno)); |
570d7624 JB |
3017 | |
3018 | notfound: | |
32f4334d | 3019 | handled: |
570d7624 | 3020 | |
265a9e55 | 3021 | if (!NILP (visit)) |
570d7624 | 3022 | { |
cfadd376 RS |
3023 | if (!EQ (current_buffer->undo_list, Qt)) |
3024 | current_buffer->undo_list = Qnil; | |
570d7624 JB |
3025 | #ifdef APOLLO |
3026 | stat (XSTRING (filename)->data, &st); | |
3027 | #endif | |
62bcf009 | 3028 | |
a7e82472 RS |
3029 | if (NILP (handler)) |
3030 | { | |
3031 | current_buffer->modtime = st.st_mtime; | |
3032 | current_buffer->filename = filename; | |
3033 | } | |
62bcf009 | 3034 | |
570d7624 JB |
3035 | current_buffer->save_modified = MODIFF; |
3036 | current_buffer->auto_save_modified = MODIFF; | |
2acfd7ae | 3037 | XSETFASTINT (current_buffer->save_length, Z - BEG); |
570d7624 | 3038 | #ifdef CLASH_DETECTION |
32f4334d RS |
3039 | if (NILP (handler)) |
3040 | { | |
3041 | if (!NILP (current_buffer->filename)) | |
3042 | unlock_file (current_buffer->filename); | |
3043 | unlock_file (filename); | |
3044 | } | |
570d7624 | 3045 | #endif /* CLASH_DETECTION */ |
330bfe57 RS |
3046 | if (not_regular) |
3047 | Fsignal (Qfile_error, | |
3048 | Fcons (build_string ("not a regular file"), | |
3049 | Fcons (filename, Qnil))); | |
3050 | ||
570d7624 | 3051 | /* If visiting nonexistent file, return nil. */ |
32f4334d | 3052 | if (current_buffer->modtime == -1) |
570d7624 JB |
3053 | report_file_error ("Opening input file", Fcons (filename, Qnil)); |
3054 | } | |
3055 | ||
62bcf009 | 3056 | if (inserted > 0 && NILP (visit) && total > 0) |
d2cad97d | 3057 | signal_after_change (point, 0, inserted); |
570d7624 | 3058 | |
d6a3cc15 RS |
3059 | if (inserted > 0) |
3060 | { | |
3061 | p = Vafter_insert_file_functions; | |
3062 | while (!NILP (p)) | |
3063 | { | |
3064 | insval = call1 (Fcar (p), make_number (inserted)); | |
3065 | if (!NILP (insval)) | |
3066 | { | |
3067 | CHECK_NUMBER (insval, 0); | |
3068 | inserted = XFASTINT (insval); | |
3069 | } | |
3070 | QUIT; | |
3071 | p = Fcdr (p); | |
3072 | } | |
3073 | } | |
3074 | ||
a1d2b64a RS |
3075 | if (NILP (val)) |
3076 | val = Fcons (filename, | |
3077 | Fcons (make_number (inserted), | |
3078 | Qnil)); | |
3079 | ||
3080 | RETURN_UNGCPRO (unbind_to (count, val)); | |
570d7624 | 3081 | } |
7fded690 | 3082 | \f |
d6a3cc15 RS |
3083 | static Lisp_Object build_annotations (); |
3084 | ||
6fc6f94b RS |
3085 | /* If build_annotations switched buffers, switch back to BUF. |
3086 | Kill the temporary buffer that was selected in the meantime. */ | |
3087 | ||
3088 | static Lisp_Object | |
3089 | build_annotations_unwind (buf) | |
3090 | Lisp_Object buf; | |
3091 | { | |
3092 | Lisp_Object tembuf; | |
3093 | ||
3094 | if (XBUFFER (buf) == current_buffer) | |
3095 | return Qnil; | |
3096 | tembuf = Fcurrent_buffer (); | |
3097 | Fset_buffer (buf); | |
3098 | Fkill_buffer (tembuf); | |
3099 | return Qnil; | |
3100 | } | |
3101 | ||
570d7624 JB |
3102 | DEFUN ("write-region", Fwrite_region, Swrite_region, 3, 5, |
3103 | "r\nFWrite region to file: ", | |
3104 | "Write current region into specified file.\n\ | |
3105 | When called from a program, takes three arguments:\n\ | |
3106 | START, END and FILENAME. START and END are buffer positions.\n\ | |
3107 | Optional fourth argument APPEND if non-nil means\n\ | |
3108 | append to existing file contents (if any).\n\ | |
3109 | Optional fifth argument VISIT if t means\n\ | |
3110 | set the last-save-file-modtime of buffer to this file's modtime\n\ | |
3111 | and mark buffer not modified.\n\ | |
3b7792ed RS |
3112 | If VISIT is a string, it is a second file name;\n\ |
3113 | the output goes to FILENAME, but the buffer is marked as visiting VISIT.\n\ | |
3114 | VISIT is also the file name to lock and unlock for clash detection.\n\ | |
1d386d28 RS |
3115 | If VISIT is neither t nor nil nor a string,\n\ |
3116 | that means do not print the \"Wrote file\" message.\n\ | |
570d7624 JB |
3117 | Kludgy feature: if START is a string, then that string is written\n\ |
3118 | to the file, instead of any buffer contents, and END is ignored.") | |
3119 | (start, end, filename, append, visit) | |
3120 | Lisp_Object start, end, filename, append, visit; | |
3121 | { | |
3122 | register int desc; | |
3123 | int failure; | |
3124 | int save_errno; | |
3125 | unsigned char *fn; | |
3126 | struct stat st; | |
c975dd7a | 3127 | int tem; |
570d7624 | 3128 | int count = specpdl_ptr - specpdl; |
6fc6f94b | 3129 | int count1; |
570d7624 | 3130 | #ifdef VMS |
5e570b75 | 3131 | unsigned char *fname = 0; /* If non-0, original filename (must rename) */ |
570d7624 | 3132 | #endif /* VMS */ |
3eac9910 | 3133 | Lisp_Object handler; |
4ad827c5 | 3134 | Lisp_Object visit_file; |
d6a3cc15 RS |
3135 | Lisp_Object annotations; |
3136 | int visiting, quietly; | |
3b7792ed | 3137 | struct gcpro gcpro1, gcpro2, gcpro3, gcpro4; |
6fc6f94b | 3138 | struct buffer *given_buffer; |
5e570b75 | 3139 | #ifdef DOS_NT |
4c3c22f3 RS |
3140 | int buffer_file_type |
3141 | = NILP (current_buffer->buffer_file_type) ? O_TEXT : O_BINARY; | |
5e570b75 | 3142 | #endif /* DOS_NT */ |
570d7624 | 3143 | |
561cb8e1 | 3144 | if (!NILP (start) && !STRINGP (start)) |
570d7624 JB |
3145 | validate_region (&start, &end); |
3146 | ||
1a04498e | 3147 | GCPRO2 (filename, visit); |
570d7624 | 3148 | filename = Fexpand_file_name (filename, Qnil); |
561cb8e1 | 3149 | if (STRINGP (visit)) |
e5176bae | 3150 | visit_file = Fexpand_file_name (visit, Qnil); |
4ad827c5 RS |
3151 | else |
3152 | visit_file = filename; | |
1a04498e | 3153 | UNGCPRO; |
4ad827c5 | 3154 | |
561cb8e1 | 3155 | visiting = (EQ (visit, Qt) || STRINGP (visit)); |
d6a3cc15 RS |
3156 | quietly = !NILP (visit); |
3157 | ||
3158 | annotations = Qnil; | |
3159 | ||
3160 | GCPRO4 (start, filename, annotations, visit_file); | |
570d7624 | 3161 | |
32f4334d RS |
3162 | /* If the file name has special constructs in it, |
3163 | call the corresponding file handler. */ | |
49307295 | 3164 | handler = Ffind_file_name_handler (filename, Qwrite_region); |
b56ad927 | 3165 | /* If FILENAME has no handler, see if VISIT has one. */ |
93c30b5f | 3166 | if (NILP (handler) && STRINGP (visit)) |
49307295 | 3167 | handler = Ffind_file_name_handler (visit, Qwrite_region); |
3eac9910 | 3168 | |
32f4334d RS |
3169 | if (!NILP (handler)) |
3170 | { | |
32f4334d | 3171 | Lisp_Object val; |
51cf6d37 RS |
3172 | val = call6 (handler, Qwrite_region, start, end, |
3173 | filename, append, visit); | |
32f4334d | 3174 | |
d6a3cc15 | 3175 | if (visiting) |
32f4334d | 3176 | { |
32f4334d | 3177 | current_buffer->save_modified = MODIFF; |
2acfd7ae | 3178 | XSETFASTINT (current_buffer->save_length, Z - BEG); |
3b7792ed | 3179 | current_buffer->filename = visit_file; |
32f4334d | 3180 | } |
09121adc | 3181 | UNGCPRO; |
32f4334d RS |
3182 | return val; |
3183 | } | |
3184 | ||
561cb8e1 RS |
3185 | /* Special kludge to simplify auto-saving. */ |
3186 | if (NILP (start)) | |
3187 | { | |
2acfd7ae KH |
3188 | XSETFASTINT (start, BEG); |
3189 | XSETFASTINT (end, Z); | |
561cb8e1 RS |
3190 | } |
3191 | ||
6fc6f94b RS |
3192 | record_unwind_protect (build_annotations_unwind, Fcurrent_buffer ()); |
3193 | count1 = specpdl_ptr - specpdl; | |
3194 | ||
3195 | given_buffer = current_buffer; | |
d6a3cc15 | 3196 | annotations = build_annotations (start, end); |
6fc6f94b RS |
3197 | if (current_buffer != given_buffer) |
3198 | { | |
3199 | start = BEGV; | |
3200 | end = ZV; | |
3201 | } | |
d6a3cc15 | 3202 | |
570d7624 JB |
3203 | #ifdef CLASH_DETECTION |
3204 | if (!auto_saving) | |
3b7792ed | 3205 | lock_file (visit_file); |
570d7624 JB |
3206 | #endif /* CLASH_DETECTION */ |
3207 | ||
09121adc | 3208 | fn = XSTRING (filename)->data; |
570d7624 | 3209 | desc = -1; |
265a9e55 | 3210 | if (!NILP (append)) |
5e570b75 | 3211 | #ifdef DOS_NT |
4c3c22f3 | 3212 | desc = open (fn, O_WRONLY | buffer_file_type); |
5e570b75 | 3213 | #else /* not DOS_NT */ |
570d7624 | 3214 | desc = open (fn, O_WRONLY); |
5e570b75 | 3215 | #endif /* not DOS_NT */ |
570d7624 JB |
3216 | |
3217 | if (desc < 0) | |
3218 | #ifdef VMS | |
5e570b75 | 3219 | if (auto_saving) /* Overwrite any previous version of autosave file */ |
570d7624 | 3220 | { |
5e570b75 | 3221 | vms_truncate (fn); /* if fn exists, truncate to zero length */ |
570d7624 JB |
3222 | desc = open (fn, O_RDWR); |
3223 | if (desc < 0) | |
561cb8e1 | 3224 | desc = creat_copy_attrs (STRINGP (current_buffer->filename) |
b72dea2a JB |
3225 | ? XSTRING (current_buffer->filename)->data : 0, |
3226 | fn); | |
570d7624 | 3227 | } |
5e570b75 | 3228 | else /* Write to temporary name and rename if no errors */ |
570d7624 JB |
3229 | { |
3230 | Lisp_Object temp_name; | |
3231 | temp_name = Ffile_name_directory (filename); | |
3232 | ||
265a9e55 | 3233 | if (!NILP (temp_name)) |
570d7624 JB |
3234 | { |
3235 | temp_name = Fmake_temp_name (concat2 (temp_name, | |
3236 | build_string ("$$SAVE$$"))); | |
3237 | fname = XSTRING (filename)->data; | |
3238 | fn = XSTRING (temp_name)->data; | |
3239 | desc = creat_copy_attrs (fname, fn); | |
3240 | if (desc < 0) | |
3241 | { | |
3242 | /* If we can't open the temporary file, try creating a new | |
3243 | version of the original file. VMS "creat" creates a | |
3244 | new version rather than truncating an existing file. */ | |
3245 | fn = fname; | |
3246 | fname = 0; | |
3247 | desc = creat (fn, 0666); | |
3248 | #if 0 /* This can clobber an existing file and fail to replace it, | |
3249 | if the user runs out of space. */ | |
3250 | if (desc < 0) | |
3251 | { | |
3252 | /* We can't make a new version; | |
3253 | try to truncate and rewrite existing version if any. */ | |
3254 | vms_truncate (fn); | |
3255 | desc = open (fn, O_RDWR); | |
3256 | } | |
3257 | #endif | |
3258 | } | |
3259 | } | |
3260 | else | |
3261 | desc = creat (fn, 0666); | |
3262 | } | |
3263 | #else /* not VMS */ | |
5e570b75 | 3264 | #ifdef DOS_NT |
4c3c22f3 RS |
3265 | desc = open (fn, |
3266 | O_WRONLY | O_TRUNC | O_CREAT | buffer_file_type, | |
3267 | S_IREAD | S_IWRITE); | |
5e570b75 | 3268 | #else /* not DOS_NT */ |
570d7624 | 3269 | desc = creat (fn, auto_saving ? auto_save_mode_bits : 0666); |
5e570b75 | 3270 | #endif /* not DOS_NT */ |
570d7624 JB |
3271 | #endif /* not VMS */ |
3272 | ||
09121adc RS |
3273 | UNGCPRO; |
3274 | ||
570d7624 JB |
3275 | if (desc < 0) |
3276 | { | |
3277 | #ifdef CLASH_DETECTION | |
3278 | save_errno = errno; | |
3b7792ed | 3279 | if (!auto_saving) unlock_file (visit_file); |
570d7624 JB |
3280 | errno = save_errno; |
3281 | #endif /* CLASH_DETECTION */ | |
3282 | report_file_error ("Opening output file", Fcons (filename, Qnil)); | |
3283 | } | |
3284 | ||
3285 | record_unwind_protect (close_file_unwind, make_number (desc)); | |
3286 | ||
265a9e55 | 3287 | if (!NILP (append)) |
570d7624 JB |
3288 | if (lseek (desc, 0, 2) < 0) |
3289 | { | |
3290 | #ifdef CLASH_DETECTION | |
3b7792ed | 3291 | if (!auto_saving) unlock_file (visit_file); |
570d7624 JB |
3292 | #endif /* CLASH_DETECTION */ |
3293 | report_file_error ("Lseek error", Fcons (filename, Qnil)); | |
3294 | } | |
3295 | ||
3296 | #ifdef VMS | |
3297 | /* | |
3298 | * Kludge Warning: The VMS C RTL likes to insert carriage returns | |
3299 | * if we do writes that don't end with a carriage return. Furthermore | |
3300 | * it cannot handle writes of more then 16K. The modified | |
3301 | * version of "sys_write" in SYSDEP.C (see comment there) copes with | |
3302 | * this EXCEPT for the last record (iff it doesn't end with a carriage | |
3303 | * return). This implies that if your buffer doesn't end with a carriage | |
3304 | * return, you get one free... tough. However it also means that if | |
3305 | * we make two calls to sys_write (a la the following code) you can | |
3306 | * get one at the gap as well. The easiest way to fix this (honest) | |
3307 | * is to move the gap to the next newline (or the end of the buffer). | |
3308 | * Thus this change. | |
3309 | * | |
3310 | * Yech! | |
3311 | */ | |
3312 | if (GPT > BEG && GPT_ADDR[-1] != '\n') | |
3313 | move_gap (find_next_newline (GPT, 1)); | |
3314 | #endif | |
3315 | ||
3316 | failure = 0; | |
3317 | immediate_quit = 1; | |
3318 | ||
561cb8e1 | 3319 | if (STRINGP (start)) |
570d7624 | 3320 | { |
d6a3cc15 RS |
3321 | failure = 0 > a_write (desc, XSTRING (start)->data, |
3322 | XSTRING (start)->size, 0, &annotations); | |
570d7624 JB |
3323 | save_errno = errno; |
3324 | } | |
3325 | else if (XINT (start) != XINT (end)) | |
3326 | { | |
c975dd7a | 3327 | int nwritten = 0; |
570d7624 JB |
3328 | if (XINT (start) < GPT) |
3329 | { | |
3330 | register int end1 = XINT (end); | |
3331 | tem = XINT (start); | |
d6a3cc15 | 3332 | failure = 0 > a_write (desc, &FETCH_CHAR (tem), |
c975dd7a RS |
3333 | min (GPT, end1) - tem, tem, &annotations); |
3334 | nwritten += min (GPT, end1) - tem; | |
570d7624 JB |
3335 | save_errno = errno; |
3336 | } | |
3337 | ||
3338 | if (XINT (end) > GPT && !failure) | |
3339 | { | |
3340 | tem = XINT (start); | |
3341 | tem = max (tem, GPT); | |
d6a3cc15 | 3342 | failure = 0 > a_write (desc, &FETCH_CHAR (tem), XINT (end) - tem, |
c975dd7a RS |
3343 | tem, &annotations); |
3344 | nwritten += XINT (end) - tem; | |
d6a3cc15 RS |
3345 | save_errno = errno; |
3346 | } | |
c975dd7a RS |
3347 | |
3348 | if (nwritten == 0) | |
d6a3cc15 RS |
3349 | { |
3350 | /* If file was empty, still need to write the annotations */ | |
c975dd7a | 3351 | failure = 0 > a_write (desc, "", 0, XINT (start), &annotations); |
570d7624 JB |
3352 | save_errno = errno; |
3353 | } | |
3354 | } | |
3355 | ||
3356 | immediate_quit = 0; | |
3357 | ||
6e23c83e | 3358 | #ifdef HAVE_FSYNC |
570d7624 JB |
3359 | /* Note fsync appears to change the modtime on BSD4.2 (both vax and sun). |
3360 | Disk full in NFS may be reported here. */ | |
1daffa1c RS |
3361 | /* mib says that closing the file will try to write as fast as NFS can do |
3362 | it, and that means the fsync here is not crucial for autosave files. */ | |
3363 | if (!auto_saving && fsync (desc) < 0) | |
570d7624 | 3364 | failure = 1, save_errno = errno; |
570d7624 JB |
3365 | #endif |
3366 | ||
3367 | /* Spurious "file has changed on disk" warnings have been | |
3368 | observed on Suns as well. | |
3369 | It seems that `close' can change the modtime, under nfs. | |
3370 | ||
3371 | (This has supposedly been fixed in Sunos 4, | |
3372 | but who knows about all the other machines with NFS?) */ | |
3373 | #if 0 | |
3374 | ||
3375 | /* On VMS and APOLLO, must do the stat after the close | |
3376 | since closing changes the modtime. */ | |
3377 | #ifndef VMS | |
3378 | #ifndef APOLLO | |
3379 | /* Recall that #if defined does not work on VMS. */ | |
3380 | #define FOO | |
3381 | fstat (desc, &st); | |
3382 | #endif | |
3383 | #endif | |
3384 | #endif | |
3385 | ||
3386 | /* NFS can report a write failure now. */ | |
3387 | if (close (desc) < 0) | |
3388 | failure = 1, save_errno = errno; | |
3389 | ||
3390 | #ifdef VMS | |
3391 | /* If we wrote to a temporary name and had no errors, rename to real name. */ | |
3392 | if (fname) | |
3393 | { | |
3394 | if (!failure) | |
3395 | failure = (rename (fn, fname) != 0), save_errno = errno; | |
3396 | fn = fname; | |
3397 | } | |
3398 | #endif /* VMS */ | |
3399 | ||
3400 | #ifndef FOO | |
3401 | stat (fn, &st); | |
3402 | #endif | |
6fc6f94b RS |
3403 | /* Discard the unwind protect for close_file_unwind. */ |
3404 | specpdl_ptr = specpdl + count1; | |
3405 | /* Restore the original current buffer. */ | |
98295b48 | 3406 | visit_file = unbind_to (count, visit_file); |
570d7624 JB |
3407 | |
3408 | #ifdef CLASH_DETECTION | |
3409 | if (!auto_saving) | |
3b7792ed | 3410 | unlock_file (visit_file); |
570d7624 JB |
3411 | #endif /* CLASH_DETECTION */ |
3412 | ||
3413 | /* Do this before reporting IO error | |
3414 | to avoid a "file has changed on disk" warning on | |
3415 | next attempt to save. */ | |
d6a3cc15 | 3416 | if (visiting) |
570d7624 JB |
3417 | current_buffer->modtime = st.st_mtime; |
3418 | ||
3419 | if (failure) | |
ce97267f | 3420 | error ("IO error writing %s: %s", fn, strerror (save_errno)); |
570d7624 | 3421 | |
d6a3cc15 | 3422 | if (visiting) |
570d7624 JB |
3423 | { |
3424 | current_buffer->save_modified = MODIFF; | |
2acfd7ae | 3425 | XSETFASTINT (current_buffer->save_length, Z - BEG); |
3b7792ed | 3426 | current_buffer->filename = visit_file; |
f4226e89 | 3427 | update_mode_lines++; |
570d7624 | 3428 | } |
d6a3cc15 | 3429 | else if (quietly) |
570d7624 JB |
3430 | return Qnil; |
3431 | ||
3432 | if (!auto_saving) | |
3b7792ed | 3433 | message ("Wrote %s", XSTRING (visit_file)->data); |
570d7624 JB |
3434 | |
3435 | return Qnil; | |
3436 | } | |
3437 | ||
d6a3cc15 RS |
3438 | Lisp_Object merge (); |
3439 | ||
3440 | DEFUN ("car-less-than-car", Fcar_less_than_car, Scar_less_than_car, 2, 2, 0, | |
2ba0ccff | 3441 | "Return t if (car A) is numerically less than (car B).") |
d6a3cc15 RS |
3442 | (a, b) |
3443 | Lisp_Object a, b; | |
3444 | { | |
3445 | return Flss (Fcar (a), Fcar (b)); | |
3446 | } | |
3447 | ||
3448 | /* Build the complete list of annotations appropriate for writing out | |
3449 | the text between START and END, by calling all the functions in | |
6fc6f94b RS |
3450 | write-region-annotate-functions and merging the lists they return. |
3451 | If one of these functions switches to a different buffer, we assume | |
3452 | that buffer contains altered text. Therefore, the caller must | |
3453 | make sure to restore the current buffer in all cases, | |
3454 | as save-excursion would do. */ | |
d6a3cc15 RS |
3455 | |
3456 | static Lisp_Object | |
3457 | build_annotations (start, end) | |
3458 | Lisp_Object start, end; | |
3459 | { | |
3460 | Lisp_Object annotations; | |
3461 | Lisp_Object p, res; | |
3462 | struct gcpro gcpro1, gcpro2; | |
3463 | ||
3464 | annotations = Qnil; | |
3465 | p = Vwrite_region_annotate_functions; | |
3466 | GCPRO2 (annotations, p); | |
3467 | while (!NILP (p)) | |
3468 | { | |
6fc6f94b RS |
3469 | struct buffer *given_buffer = current_buffer; |
3470 | Vwrite_region_annotations_so_far = annotations; | |
d6a3cc15 | 3471 | res = call2 (Fcar (p), start, end); |
6fc6f94b RS |
3472 | /* If the function makes a different buffer current, |
3473 | assume that means this buffer contains altered text to be output. | |
3474 | Reset START and END from the buffer bounds | |
3475 | and discard all previous annotations because they should have | |
3476 | been dealt with by this function. */ | |
3477 | if (current_buffer != given_buffer) | |
3478 | { | |
6fc6f94b RS |
3479 | start = BEGV; |
3480 | end = ZV; | |
3481 | annotations = Qnil; | |
3482 | } | |
d6a3cc15 RS |
3483 | Flength (res); /* Check basic validity of return value */ |
3484 | annotations = merge (annotations, res, Qcar_less_than_car); | |
3485 | p = Fcdr (p); | |
3486 | } | |
3487 | UNGCPRO; | |
3488 | return annotations; | |
3489 | } | |
3490 | ||
3491 | /* Write to descriptor DESC the LEN characters starting at ADDR, | |
3492 | assuming they start at position POS in the buffer. | |
3493 | Intersperse with them the annotations from *ANNOT | |
3494 | (those which fall within the range of positions POS to POS + LEN), | |
3495 | each at its appropriate position. | |
3496 | ||
3497 | Modify *ANNOT by discarding elements as we output them. | |
3498 | The return value is negative in case of system call failure. */ | |
3499 | ||
3500 | int | |
3501 | a_write (desc, addr, len, pos, annot) | |
3502 | int desc; | |
3503 | register char *addr; | |
3504 | register int len; | |
3505 | int pos; | |
3506 | Lisp_Object *annot; | |
3507 | { | |
3508 | Lisp_Object tem; | |
3509 | int nextpos; | |
3510 | int lastpos = pos + len; | |
3511 | ||
eb15aa18 | 3512 | while (NILP (*annot) || CONSP (*annot)) |
d6a3cc15 RS |
3513 | { |
3514 | tem = Fcar_safe (Fcar (*annot)); | |
3515 | if (INTEGERP (tem) && XINT (tem) >= pos && XFASTINT (tem) <= lastpos) | |
3516 | nextpos = XFASTINT (tem); | |
3517 | else | |
3518 | return e_write (desc, addr, lastpos - pos); | |
3519 | if (nextpos > pos) | |
3520 | { | |
3521 | if (0 > e_write (desc, addr, nextpos - pos)) | |
3522 | return -1; | |
3523 | addr += nextpos - pos; | |
3524 | pos = nextpos; | |
3525 | } | |
3526 | tem = Fcdr (Fcar (*annot)); | |
3527 | if (STRINGP (tem)) | |
3528 | { | |
3529 | if (0 > e_write (desc, XSTRING (tem)->data, XSTRING (tem)->size)) | |
3530 | return -1; | |
3531 | } | |
3532 | *annot = Fcdr (*annot); | |
3533 | } | |
3534 | } | |
3535 | ||
570d7624 JB |
3536 | int |
3537 | e_write (desc, addr, len) | |
3538 | int desc; | |
3539 | register char *addr; | |
3540 | register int len; | |
3541 | { | |
3542 | char buf[16 * 1024]; | |
3543 | register char *p, *end; | |
3544 | ||
3545 | if (!EQ (current_buffer->selective_display, Qt)) | |
3546 | return write (desc, addr, len) - len; | |
3547 | else | |
3548 | { | |
3549 | p = buf; | |
3550 | end = p + sizeof buf; | |
3551 | while (len--) | |
3552 | { | |
3553 | if (p == end) | |
3554 | { | |
3555 | if (write (desc, buf, sizeof buf) != sizeof buf) | |
3556 | return -1; | |
3557 | p = buf; | |
3558 | } | |
3559 | *p = *addr++; | |
3560 | if (*p++ == '\015') | |
3561 | p[-1] = '\n'; | |
3562 | } | |
3563 | if (p != buf) | |
3564 | if (write (desc, buf, p - buf) != p - buf) | |
3565 | return -1; | |
3566 | } | |
3567 | return 0; | |
3568 | } | |
3569 | ||
3570 | DEFUN ("verify-visited-file-modtime", Fverify_visited_file_modtime, | |
3571 | Sverify_visited_file_modtime, 1, 1, 0, | |
3572 | "Return t if last mod time of BUF's visited file matches what BUF records.\n\ | |
3573 | This means that the file has not been changed since it was visited or saved.") | |
3574 | (buf) | |
3575 | Lisp_Object buf; | |
3576 | { | |
3577 | struct buffer *b; | |
3578 | struct stat st; | |
32f4334d | 3579 | Lisp_Object handler; |
570d7624 JB |
3580 | |
3581 | CHECK_BUFFER (buf, 0); | |
3582 | b = XBUFFER (buf); | |
3583 | ||
93c30b5f | 3584 | if (!STRINGP (b->filename)) return Qt; |
570d7624 JB |
3585 | if (b->modtime == 0) return Qt; |
3586 | ||
32f4334d RS |
3587 | /* If the file name has special constructs in it, |
3588 | call the corresponding file handler. */ | |
49307295 KH |
3589 | handler = Ffind_file_name_handler (b->filename, |
3590 | Qverify_visited_file_modtime); | |
32f4334d | 3591 | if (!NILP (handler)) |
09121adc | 3592 | return call2 (handler, Qverify_visited_file_modtime, buf); |
32f4334d | 3593 | |
570d7624 JB |
3594 | if (stat (XSTRING (b->filename)->data, &st) < 0) |
3595 | { | |
3596 | /* If the file doesn't exist now and didn't exist before, | |
3597 | we say that it isn't modified, provided the error is a tame one. */ | |
3598 | if (errno == ENOENT || errno == EACCES || errno == ENOTDIR) | |
3599 | st.st_mtime = -1; | |
3600 | else | |
3601 | st.st_mtime = 0; | |
3602 | } | |
3603 | if (st.st_mtime == b->modtime | |
3604 | /* If both are positive, accept them if they are off by one second. */ | |
3605 | || (st.st_mtime > 0 && b->modtime > 0 | |
3606 | && (st.st_mtime == b->modtime + 1 | |
3607 | || st.st_mtime == b->modtime - 1))) | |
3608 | return Qt; | |
3609 | return Qnil; | |
3610 | } | |
3611 | ||
3612 | DEFUN ("clear-visited-file-modtime", Fclear_visited_file_modtime, | |
3613 | Sclear_visited_file_modtime, 0, 0, 0, | |
3614 | "Clear out records of last mod time of visited file.\n\ | |
3615 | Next attempt to save will certainly not complain of a discrepancy.") | |
3616 | () | |
3617 | { | |
3618 | current_buffer->modtime = 0; | |
3619 | return Qnil; | |
3620 | } | |
3621 | ||
f5d5eccf RS |
3622 | DEFUN ("visited-file-modtime", Fvisited_file_modtime, |
3623 | Svisited_file_modtime, 0, 0, 0, | |
3624 | "Return the current buffer's recorded visited file modification time.\n\ | |
3625 | The value is a list of the form (HIGH . LOW), like the time values\n\ | |
3626 | that `file-attributes' returns.") | |
3627 | () | |
3628 | { | |
3629 | return long_to_cons (current_buffer->modtime); | |
3630 | } | |
3631 | ||
570d7624 | 3632 | DEFUN ("set-visited-file-modtime", Fset_visited_file_modtime, |
f5d5eccf | 3633 | Sset_visited_file_modtime, 0, 1, 0, |
570d7624 JB |
3634 | "Update buffer's recorded modification time from the visited file's time.\n\ |
3635 | Useful if the buffer was not read from the file normally\n\ | |
f5d5eccf RS |
3636 | or if the file itself has been changed for some known benign reason.\n\ |
3637 | An argument specifies the modification time value to use\n\ | |
3638 | \(instead of that of the visited file), in the form of a list\n\ | |
3639 | \(HIGH . LOW) or (HIGH LOW).") | |
3640 | (time_list) | |
3641 | Lisp_Object time_list; | |
570d7624 | 3642 | { |
f5d5eccf RS |
3643 | if (!NILP (time_list)) |
3644 | current_buffer->modtime = cons_to_long (time_list); | |
3645 | else | |
3646 | { | |
3647 | register Lisp_Object filename; | |
3648 | struct stat st; | |
3649 | Lisp_Object handler; | |
570d7624 | 3650 | |
f5d5eccf | 3651 | filename = Fexpand_file_name (current_buffer->filename, Qnil); |
32f4334d | 3652 | |
f5d5eccf RS |
3653 | /* If the file name has special constructs in it, |
3654 | call the corresponding file handler. */ | |
49307295 | 3655 | handler = Ffind_file_name_handler (filename, Qset_visited_file_modtime); |
f5d5eccf | 3656 | if (!NILP (handler)) |
caf3c431 | 3657 | /* The handler can find the file name the same way we did. */ |
76c881b0 | 3658 | return call2 (handler, Qset_visited_file_modtime, Qnil); |
f5d5eccf RS |
3659 | else if (stat (XSTRING (filename)->data, &st) >= 0) |
3660 | current_buffer->modtime = st.st_mtime; | |
3661 | } | |
570d7624 JB |
3662 | |
3663 | return Qnil; | |
3664 | } | |
3665 | \f | |
3666 | Lisp_Object | |
3667 | auto_save_error () | |
3668 | { | |
570d7624 | 3669 | ring_bell (); |
1a04498e | 3670 | message ("Autosaving...error for %s", XSTRING (current_buffer->name)->data); |
de49a6d3 | 3671 | Fsleep_for (make_number (1), Qnil); |
1a04498e | 3672 | message ("Autosaving...error!for %s", XSTRING (current_buffer->name)->data); |
de49a6d3 | 3673 | Fsleep_for (make_number (1), Qnil); |
1a04498e | 3674 | message ("Autosaving...error for %s", XSTRING (current_buffer->name)->data); |
de49a6d3 | 3675 | Fsleep_for (make_number (1), Qnil); |
570d7624 JB |
3676 | return Qnil; |
3677 | } | |
3678 | ||
3679 | Lisp_Object | |
3680 | auto_save_1 () | |
3681 | { | |
3682 | unsigned char *fn; | |
3683 | struct stat st; | |
3684 | ||
3685 | /* Get visited file's mode to become the auto save file's mode. */ | |
3686 | if (stat (XSTRING (current_buffer->filename)->data, &st) >= 0) | |
3687 | /* But make sure we can overwrite it later! */ | |
3688 | auto_save_mode_bits = st.st_mode | 0600; | |
3689 | else | |
3690 | auto_save_mode_bits = 0666; | |
3691 | ||
3692 | return | |
3693 | Fwrite_region (Qnil, Qnil, | |
3694 | current_buffer->auto_save_file_name, | |
3695 | Qnil, Qlambda); | |
3696 | } | |
3697 | ||
e54d3b5d | 3698 | static Lisp_Object |
15fa1468 RS |
3699 | do_auto_save_unwind (desc) /* used as unwind-protect function */ |
3700 | Lisp_Object desc; | |
e54d3b5d | 3701 | { |
15fa1468 | 3702 | close (XINT (desc)); |
e54d3b5d RS |
3703 | return Qnil; |
3704 | } | |
3705 | ||
570d7624 JB |
3706 | DEFUN ("do-auto-save", Fdo_auto_save, Sdo_auto_save, 0, 2, "", |
3707 | "Auto-save all buffers that need it.\n\ | |
3708 | This is all buffers that have auto-saving enabled\n\ | |
3709 | and are changed since last auto-saved.\n\ | |
3710 | Auto-saving writes the buffer into a file\n\ | |
3711 | so that your editing is not lost if the system crashes.\n\ | |
012d4cdc RS |
3712 | This file is not the file you visited; that changes only when you save.\n\ |
3713 | Normally we run the normal hook `auto-save-hook' before saving.\n\n\ | |
570d7624 | 3714 | Non-nil first argument means do not print any message if successful.\n\ |
4746118a | 3715 | Non-nil second argument means save only current buffer.") |
17857782 JB |
3716 | (no_message, current_only) |
3717 | Lisp_Object no_message, current_only; | |
570d7624 JB |
3718 | { |
3719 | struct buffer *old = current_buffer, *b; | |
3720 | Lisp_Object tail, buf; | |
3721 | int auto_saved = 0; | |
3722 | char *omessage = echo_area_glyphs; | |
f05b275b | 3723 | int omessage_length = echo_area_glyphs_length; |
f14b1c68 JB |
3724 | extern int minibuf_level; |
3725 | int do_handled_files; | |
ff4c9993 | 3726 | Lisp_Object oquit; |
e54d3b5d | 3727 | int listdesc; |
e54d3b5d RS |
3728 | int count = specpdl_ptr - specpdl; |
3729 | int *ptr; | |
ff4c9993 RS |
3730 | |
3731 | /* Ordinarily don't quit within this function, | |
3732 | but don't make it impossible to quit (in case we get hung in I/O). */ | |
3733 | oquit = Vquit_flag; | |
3734 | Vquit_flag = Qnil; | |
570d7624 JB |
3735 | |
3736 | /* No GCPRO needed, because (when it matters) all Lisp_Object variables | |
3737 | point to non-strings reached from Vbuffer_alist. */ | |
3738 | ||
3739 | auto_saving = 1; | |
3740 | if (minibuf_level) | |
17857782 | 3741 | no_message = Qt; |
570d7624 | 3742 | |
265a9e55 | 3743 | if (!NILP (Vrun_hooks)) |
570d7624 JB |
3744 | call1 (Vrun_hooks, intern ("auto-save-hook")); |
3745 | ||
e54d3b5d RS |
3746 | if (STRINGP (Vauto_save_list_file_name)) |
3747 | { | |
5e570b75 | 3748 | #ifdef DOS_NT |
e54d3b5d RS |
3749 | listdesc = open (XSTRING (Vauto_save_list_file_name)->data, |
3750 | O_WRONLY | O_TRUNC | O_CREAT | O_TEXT, | |
3751 | S_IREAD | S_IWRITE); | |
5e570b75 | 3752 | #else /* not DOS_NT */ |
e54d3b5d | 3753 | listdesc = creat (XSTRING (Vauto_save_list_file_name)->data, 0666); |
5e570b75 | 3754 | #endif /* not DOS_NT */ |
e54d3b5d RS |
3755 | } |
3756 | else | |
3757 | listdesc = -1; | |
e54d3b5d | 3758 | |
15fa1468 RS |
3759 | /* Arrange to close that file whether or not we get an error. */ |
3760 | if (listdesc >= 0) | |
3761 | record_unwind_protect (do_auto_save_unwind, make_number (listdesc)); | |
e54d3b5d | 3762 | |
f14b1c68 JB |
3763 | /* First, save all files which don't have handlers. If Emacs is |
3764 | crashing, the handlers may tweak what is causing Emacs to crash | |
3765 | in the first place, and it would be a shame if Emacs failed to | |
3766 | autosave perfectly ordinary files because it couldn't handle some | |
3767 | ange-ftp'd file. */ | |
3768 | for (do_handled_files = 0; do_handled_files < 2; do_handled_files++) | |
3769 | for (tail = Vbuffer_alist; XGCTYPE (tail) == Lisp_Cons; | |
3770 | tail = XCONS (tail)->cdr) | |
3771 | { | |
3772 | buf = XCONS (XCONS (tail)->car)->cdr; | |
3773 | b = XBUFFER (buf); | |
e54d3b5d RS |
3774 | |
3775 | /* Record all the buffers that have auto save mode | |
3776 | in the special file that lists them. */ | |
93c30b5f | 3777 | if (STRINGP (b->auto_save_file_name) |
e54d3b5d RS |
3778 | && listdesc >= 0 && do_handled_files == 0) |
3779 | { | |
3780 | write (listdesc, XSTRING (b->auto_save_file_name)->data, | |
3781 | XSTRING (b->auto_save_file_name)->size); | |
3782 | write (listdesc, "\n", 1); | |
3783 | } | |
17857782 | 3784 | |
f14b1c68 JB |
3785 | if (!NILP (current_only) |
3786 | && b != current_buffer) | |
3787 | continue; | |
e54d3b5d | 3788 | |
f14b1c68 JB |
3789 | /* Check for auto save enabled |
3790 | and file changed since last auto save | |
3791 | and file changed since last real save. */ | |
93c30b5f | 3792 | if (STRINGP (b->auto_save_file_name) |
f14b1c68 JB |
3793 | && b->save_modified < BUF_MODIFF (b) |
3794 | && b->auto_save_modified < BUF_MODIFF (b) | |
82c2d839 RS |
3795 | /* -1 means we've turned off autosaving for a while--see below. */ |
3796 | && XINT (b->save_length) >= 0 | |
f14b1c68 | 3797 | && (do_handled_files |
49307295 KH |
3798 | || NILP (Ffind_file_name_handler (b->auto_save_file_name, |
3799 | Qwrite_region)))) | |
f14b1c68 | 3800 | { |
b60247d9 RS |
3801 | EMACS_TIME before_time, after_time; |
3802 | ||
3803 | EMACS_GET_TIME (before_time); | |
3804 | ||
3805 | /* If we had a failure, don't try again for 20 minutes. */ | |
3806 | if (b->auto_save_failure_time >= 0 | |
3807 | && EMACS_SECS (before_time) - b->auto_save_failure_time < 1200) | |
3808 | continue; | |
3809 | ||
f14b1c68 JB |
3810 | if ((XFASTINT (b->save_length) * 10 |
3811 | > (BUF_Z (b) - BUF_BEG (b)) * 13) | |
3812 | /* A short file is likely to change a large fraction; | |
3813 | spare the user annoying messages. */ | |
3814 | && XFASTINT (b->save_length) > 5000 | |
3815 | /* These messages are frequent and annoying for `*mail*'. */ | |
3816 | && !EQ (b->filename, Qnil) | |
3817 | && NILP (no_message)) | |
3818 | { | |
3819 | /* It has shrunk too much; turn off auto-saving here. */ | |
3820 | message ("Buffer %s has shrunk a lot; auto save turned off there", | |
3821 | XSTRING (b->name)->data); | |
82c2d839 RS |
3822 | /* Turn off auto-saving until there's a real save, |
3823 | and prevent any more warnings. */ | |
46283abe | 3824 | XSETINT (b->save_length, -1); |
f14b1c68 JB |
3825 | Fsleep_for (make_number (1), Qnil); |
3826 | continue; | |
3827 | } | |
3828 | set_buffer_internal (b); | |
3829 | if (!auto_saved && NILP (no_message)) | |
3830 | message1 ("Auto-saving..."); | |
3831 | internal_condition_case (auto_save_1, Qt, auto_save_error); | |
3832 | auto_saved++; | |
3833 | b->auto_save_modified = BUF_MODIFF (b); | |
2acfd7ae | 3834 | XSETFASTINT (current_buffer->save_length, Z - BEG); |
f14b1c68 | 3835 | set_buffer_internal (old); |
b60247d9 RS |
3836 | |
3837 | EMACS_GET_TIME (after_time); | |
3838 | ||
3839 | /* If auto-save took more than 60 seconds, | |
3840 | assume it was an NFS failure that got a timeout. */ | |
3841 | if (EMACS_SECS (after_time) - EMACS_SECS (before_time) > 60) | |
3842 | b->auto_save_failure_time = EMACS_SECS (after_time); | |
f14b1c68 JB |
3843 | } |
3844 | } | |
570d7624 | 3845 | |
b67f2ca5 RS |
3846 | /* Prevent another auto save till enough input events come in. */ |
3847 | record_auto_save (); | |
570d7624 | 3848 | |
17857782 | 3849 | if (auto_saved && NILP (no_message)) |
f05b275b KH |
3850 | { |
3851 | if (omessage) | |
3852 | message2 (omessage, omessage_length); | |
3853 | else | |
3854 | message1 ("Auto-saving...done"); | |
3855 | } | |
570d7624 | 3856 | |
ff4c9993 RS |
3857 | Vquit_flag = oquit; |
3858 | ||
570d7624 | 3859 | auto_saving = 0; |
e54d3b5d | 3860 | unbind_to (count, Qnil); |
570d7624 JB |
3861 | return Qnil; |
3862 | } | |
3863 | ||
3864 | DEFUN ("set-buffer-auto-saved", Fset_buffer_auto_saved, | |
3865 | Sset_buffer_auto_saved, 0, 0, 0, | |
3866 | "Mark current buffer as auto-saved with its current text.\n\ | |
3867 | No auto-save file will be written until the buffer changes again.") | |
3868 | () | |
3869 | { | |
3870 | current_buffer->auto_save_modified = MODIFF; | |
2acfd7ae | 3871 | XSETFASTINT (current_buffer->save_length, Z - BEG); |
b60247d9 RS |
3872 | current_buffer->auto_save_failure_time = -1; |
3873 | return Qnil; | |
3874 | } | |
3875 | ||
3876 | DEFUN ("clear-buffer-auto-save-failure", Fclear_buffer_auto_save_failure, | |
3877 | Sclear_buffer_auto_save_failure, 0, 0, 0, | |
3878 | "Clear any record of a recent auto-save failure in the current buffer.") | |
3879 | () | |
3880 | { | |
3881 | current_buffer->auto_save_failure_time = -1; | |
570d7624 JB |
3882 | return Qnil; |
3883 | } | |
3884 | ||
3885 | DEFUN ("recent-auto-save-p", Frecent_auto_save_p, Srecent_auto_save_p, | |
3886 | 0, 0, 0, | |
3887 | "Return t if buffer has been auto-saved since last read in or saved.") | |
3888 | () | |
3889 | { | |
3890 | return (current_buffer->save_modified < current_buffer->auto_save_modified) ? Qt : Qnil; | |
3891 | } | |
3892 | \f | |
3893 | /* Reading and completing file names */ | |
3894 | extern Lisp_Object Ffile_name_completion (), Ffile_name_all_completions (); | |
3895 | ||
6e710ae5 RS |
3896 | /* In the string VAL, change each $ to $$ and return the result. */ |
3897 | ||
3898 | static Lisp_Object | |
3899 | double_dollars (val) | |
3900 | Lisp_Object val; | |
3901 | { | |
3902 | register unsigned char *old, *new; | |
3903 | register int n; | |
3904 | int osize, count; | |
3905 | ||
3906 | osize = XSTRING (val)->size; | |
3907 | /* Quote "$" as "$$" to get it past substitute-in-file-name */ | |
3908 | for (n = osize, count = 0, old = XSTRING (val)->data; n > 0; n--) | |
3909 | if (*old++ == '$') count++; | |
3910 | if (count > 0) | |
3911 | { | |
3912 | old = XSTRING (val)->data; | |
3913 | val = Fmake_string (make_number (osize + count), make_number (0)); | |
3914 | new = XSTRING (val)->data; | |
3915 | for (n = osize; n > 0; n--) | |
3916 | if (*old != '$') | |
3917 | *new++ = *old++; | |
3918 | else | |
3919 | { | |
3920 | *new++ = '$'; | |
3921 | *new++ = '$'; | |
3922 | old++; | |
3923 | } | |
3924 | } | |
3925 | return val; | |
3926 | } | |
3927 | ||
570d7624 JB |
3928 | DEFUN ("read-file-name-internal", Fread_file_name_internal, Sread_file_name_internal, |
3929 | 3, 3, 0, | |
3930 | "Internal subroutine for read-file-name. Do not call this.") | |
3931 | (string, dir, action) | |
3932 | Lisp_Object string, dir, action; | |
3933 | /* action is nil for complete, t for return list of completions, | |
3934 | lambda for verify final value */ | |
3935 | { | |
3936 | Lisp_Object name, specdir, realdir, val, orig_string; | |
09121adc RS |
3937 | int changed; |
3938 | struct gcpro gcpro1, gcpro2, gcpro3, gcpro4; | |
3939 | ||
3940 | realdir = dir; | |
3941 | name = string; | |
3942 | orig_string = Qnil; | |
3943 | specdir = Qnil; | |
3944 | changed = 0; | |
3945 | /* No need to protect ACTION--we only compare it with t and nil. */ | |
3946 | GCPRO4 (string, realdir, name, specdir); | |
570d7624 JB |
3947 | |
3948 | if (XSTRING (string)->size == 0) | |
3949 | { | |
570d7624 | 3950 | if (EQ (action, Qlambda)) |
09121adc RS |
3951 | { |
3952 | UNGCPRO; | |
3953 | return Qnil; | |
3954 | } | |
570d7624 JB |
3955 | } |
3956 | else | |
3957 | { | |
3958 | orig_string = string; | |
3959 | string = Fsubstitute_in_file_name (string); | |
09121adc | 3960 | changed = NILP (Fstring_equal (string, orig_string)); |
570d7624 | 3961 | name = Ffile_name_nondirectory (string); |
09121adc RS |
3962 | val = Ffile_name_directory (string); |
3963 | if (! NILP (val)) | |
3964 | realdir = Fexpand_file_name (val, realdir); | |
570d7624 JB |
3965 | } |
3966 | ||
265a9e55 | 3967 | if (NILP (action)) |
570d7624 JB |
3968 | { |
3969 | specdir = Ffile_name_directory (string); | |
3970 | val = Ffile_name_completion (name, realdir); | |
09121adc | 3971 | UNGCPRO; |
93c30b5f | 3972 | if (!STRINGP (val)) |
570d7624 | 3973 | { |
09121adc | 3974 | if (changed) |
dbd04e01 | 3975 | return double_dollars (string); |
09121adc | 3976 | return val; |
570d7624 JB |
3977 | } |
3978 | ||
265a9e55 | 3979 | if (!NILP (specdir)) |
570d7624 JB |
3980 | val = concat2 (specdir, val); |
3981 | #ifndef VMS | |
6e710ae5 RS |
3982 | return double_dollars (val); |
3983 | #else /* not VMS */ | |
09121adc | 3984 | return val; |
6e710ae5 | 3985 | #endif /* not VMS */ |
570d7624 | 3986 | } |
09121adc | 3987 | UNGCPRO; |
570d7624 JB |
3988 | |
3989 | if (EQ (action, Qt)) | |
3990 | return Ffile_name_all_completions (name, realdir); | |
3991 | /* Only other case actually used is ACTION = lambda */ | |
3992 | #ifdef VMS | |
3993 | /* Supposedly this helps commands such as `cd' that read directory names, | |
3994 | but can someone explain how it helps them? -- RMS */ | |
3995 | if (XSTRING (name)->size == 0) | |
3996 | return Qt; | |
3997 | #endif /* VMS */ | |
3998 | return Ffile_exists_p (string); | |
3999 | } | |
4000 | ||
4001 | DEFUN ("read-file-name", Fread_file_name, Sread_file_name, 1, 5, 0, | |
4002 | "Read file name, prompting with PROMPT and completing in directory DIR.\n\ | |
4003 | Value is not expanded---you must call `expand-file-name' yourself.\n\ | |
4004 | Default name to DEFAULT if user enters a null string.\n\ | |
3beeedfe RS |
4005 | (If DEFAULT is omitted, the visited file name is used,\n\ |
4006 | except that if INITIAL is specified, that combined with DIR is used.)\n\ | |
570d7624 JB |
4007 | Fourth arg MUSTMATCH non-nil means require existing file's name.\n\ |
4008 | Non-nil and non-t means also require confirmation after completion.\n\ | |
4009 | Fifth arg INITIAL specifies text to start with.\n\ | |
4010 | DIR defaults to current buffer's directory default.") | |
4011 | (prompt, dir, defalt, mustmatch, initial) | |
4012 | Lisp_Object prompt, dir, defalt, mustmatch, initial; | |
4013 | { | |
85b5fe07 | 4014 | Lisp_Object val, insdef, insdef1, tem; |
570d7624 JB |
4015 | struct gcpro gcpro1, gcpro2; |
4016 | register char *homedir; | |
4017 | int count; | |
4018 | ||
265a9e55 | 4019 | if (NILP (dir)) |
570d7624 | 4020 | dir = current_buffer->directory; |
265a9e55 | 4021 | if (NILP (defalt)) |
3beeedfe RS |
4022 | { |
4023 | if (! NILP (initial)) | |
4024 | defalt = Fexpand_file_name (initial, dir); | |
4025 | else | |
4026 | defalt = current_buffer->filename; | |
4027 | } | |
570d7624 JB |
4028 | |
4029 | /* If dir starts with user's homedir, change that to ~. */ | |
4030 | homedir = (char *) egetenv ("HOME"); | |
4031 | if (homedir != 0 | |
93c30b5f | 4032 | && STRINGP (dir) |
570d7624 | 4033 | && !strncmp (homedir, XSTRING (dir)->data, strlen (homedir)) |
5e570b75 | 4034 | && IS_DIRECTORY_SEP (XSTRING (dir)->data[strlen (homedir)])) |
570d7624 JB |
4035 | { |
4036 | dir = make_string (XSTRING (dir)->data + strlen (homedir) - 1, | |
4037 | XSTRING (dir)->size - strlen (homedir) + 1); | |
4038 | XSTRING (dir)->data[0] = '~'; | |
4039 | } | |
4040 | ||
4041 | if (insert_default_directory) | |
4042 | { | |
4043 | insdef = dir; | |
265a9e55 | 4044 | if (!NILP (initial)) |
570d7624 | 4045 | { |
15c65264 | 4046 | Lisp_Object args[2], pos; |
570d7624 JB |
4047 | |
4048 | args[0] = insdef; | |
4049 | args[1] = initial; | |
4050 | insdef = Fconcat (2, args); | |
351bd676 | 4051 | pos = make_number (XSTRING (double_dollars (dir))->size); |
6e710ae5 | 4052 | insdef1 = Fcons (double_dollars (insdef), pos); |
570d7624 | 4053 | } |
6e710ae5 RS |
4054 | else |
4055 | insdef1 = double_dollars (insdef); | |
570d7624 | 4056 | } |
351bd676 KH |
4057 | else if (!NILP (initial)) |
4058 | { | |
4059 | insdef = initial; | |
4060 | insdef1 = Fcons (double_dollars (insdef), 0); | |
4061 | } | |
570d7624 | 4062 | else |
85b5fe07 | 4063 | insdef = Qnil, insdef1 = Qnil; |
570d7624 JB |
4064 | |
4065 | #ifdef VMS | |
4066 | count = specpdl_ptr - specpdl; | |
4067 | specbind (intern ("completion-ignore-case"), Qt); | |
4068 | #endif | |
4069 | ||
4070 | GCPRO2 (insdef, defalt); | |
4071 | val = Fcompleting_read (prompt, intern ("read-file-name-internal"), | |
85b5fe07 | 4072 | dir, mustmatch, insdef1, |
15c65264 | 4073 | Qfile_name_history); |
570d7624 JB |
4074 | |
4075 | #ifdef VMS | |
4076 | unbind_to (count, Qnil); | |
4077 | #endif | |
4078 | ||
4079 | UNGCPRO; | |
265a9e55 | 4080 | if (NILP (val)) |
570d7624 JB |
4081 | error ("No file name specified"); |
4082 | tem = Fstring_equal (val, insdef); | |
265a9e55 | 4083 | if (!NILP (tem) && !NILP (defalt)) |
570d7624 | 4084 | return defalt; |
b320926a | 4085 | if (XSTRING (val)->size == 0 && NILP (insdef)) |
d9bc1c99 RS |
4086 | { |
4087 | if (!NILP (defalt)) | |
4088 | return defalt; | |
4089 | else | |
4090 | error ("No default file name"); | |
4091 | } | |
570d7624 JB |
4092 | return Fsubstitute_in_file_name (val); |
4093 | } | |
4094 | ||
5e570b75 | 4095 | #if 0 /* Old version */ |
570d7624 | 4096 | DEFUN ("read-file-name", Fread_file_name, Sread_file_name, 1, 5, 0, |
0de25302 KH |
4097 | /* Don't confuse make-docfile by having two doc strings for this function. |
4098 | make-docfile does not pay attention to #if, for good reason! */ | |
4099 | 0) | |
570d7624 JB |
4100 | (prompt, dir, defalt, mustmatch, initial) |
4101 | Lisp_Object prompt, dir, defalt, mustmatch, initial; | |
4102 | { | |
4103 | Lisp_Object val, insdef, tem; | |
4104 | struct gcpro gcpro1, gcpro2; | |
4105 | register char *homedir; | |
4106 | int count; | |
4107 | ||
265a9e55 | 4108 | if (NILP (dir)) |
570d7624 | 4109 | dir = current_buffer->directory; |
265a9e55 | 4110 | if (NILP (defalt)) |
570d7624 JB |
4111 | defalt = current_buffer->filename; |
4112 | ||
4113 | /* If dir starts with user's homedir, change that to ~. */ | |
4114 | homedir = (char *) egetenv ("HOME"); | |
4115 | if (homedir != 0 | |
93c30b5f | 4116 | && STRINGP (dir) |
570d7624 JB |
4117 | && !strncmp (homedir, XSTRING (dir)->data, strlen (homedir)) |
4118 | && XSTRING (dir)->data[strlen (homedir)] == '/') | |
4119 | { | |
4120 | dir = make_string (XSTRING (dir)->data + strlen (homedir) - 1, | |
4121 | XSTRING (dir)->size - strlen (homedir) + 1); | |
4122 | XSTRING (dir)->data[0] = '~'; | |
4123 | } | |
4124 | ||
265a9e55 | 4125 | if (!NILP (initial)) |
570d7624 JB |
4126 | insdef = initial; |
4127 | else if (insert_default_directory) | |
4128 | insdef = dir; | |
4129 | else | |
4130 | insdef = build_string (""); | |
4131 | ||
4132 | #ifdef VMS | |
4133 | count = specpdl_ptr - specpdl; | |
4134 | specbind (intern ("completion-ignore-case"), Qt); | |
4135 | #endif | |
4136 | ||
4137 | GCPRO2 (insdef, defalt); | |
4138 | val = Fcompleting_read (prompt, intern ("read-file-name-internal"), | |
4139 | dir, mustmatch, | |
15c65264 RS |
4140 | insert_default_directory ? insdef : Qnil, |
4141 | Qfile_name_history); | |
570d7624 JB |
4142 | |
4143 | #ifdef VMS | |
4144 | unbind_to (count, Qnil); | |
4145 | #endif | |
4146 | ||
4147 | UNGCPRO; | |
265a9e55 | 4148 | if (NILP (val)) |
570d7624 JB |
4149 | error ("No file name specified"); |
4150 | tem = Fstring_equal (val, insdef); | |
265a9e55 | 4151 | if (!NILP (tem) && !NILP (defalt)) |
570d7624 JB |
4152 | return defalt; |
4153 | return Fsubstitute_in_file_name (val); | |
4154 | } | |
4155 | #endif /* Old version */ | |
4156 | \f | |
4157 | syms_of_fileio () | |
4158 | { | |
0bf2eed2 RS |
4159 | Qexpand_file_name = intern ("expand-file-name"); |
4160 | Qdirectory_file_name = intern ("directory-file-name"); | |
4161 | Qfile_name_directory = intern ("file-name-directory"); | |
4162 | Qfile_name_nondirectory = intern ("file-name-nondirectory"); | |
642ef245 | 4163 | Qunhandled_file_name_directory = intern ("unhandled-file-name-directory"); |
0bf2eed2 | 4164 | Qfile_name_as_directory = intern ("file-name-as-directory"); |
32f4334d | 4165 | Qcopy_file = intern ("copy-file"); |
a6e6e718 | 4166 | Qmake_directory_internal = intern ("make-directory-internal"); |
32f4334d RS |
4167 | Qdelete_directory = intern ("delete-directory"); |
4168 | Qdelete_file = intern ("delete-file"); | |
4169 | Qrename_file = intern ("rename-file"); | |
4170 | Qadd_name_to_file = intern ("add-name-to-file"); | |
4171 | Qmake_symbolic_link = intern ("make-symbolic-link"); | |
4172 | Qfile_exists_p = intern ("file-exists-p"); | |
4173 | Qfile_executable_p = intern ("file-executable-p"); | |
4174 | Qfile_readable_p = intern ("file-readable-p"); | |
4175 | Qfile_symlink_p = intern ("file-symlink-p"); | |
4176 | Qfile_writable_p = intern ("file-writable-p"); | |
4177 | Qfile_directory_p = intern ("file-directory-p"); | |
4178 | Qfile_accessible_directory_p = intern ("file-accessible-directory-p"); | |
4179 | Qfile_modes = intern ("file-modes"); | |
4180 | Qset_file_modes = intern ("set-file-modes"); | |
4181 | Qfile_newer_than_file_p = intern ("file-newer-than-file-p"); | |
4182 | Qinsert_file_contents = intern ("insert-file-contents"); | |
4183 | Qwrite_region = intern ("write-region"); | |
4184 | Qverify_visited_file_modtime = intern ("verify-visited-file-modtime"); | |
3ec46acd | 4185 | Qset_visited_file_modtime = intern ("set-visited-file-modtime"); |
32f4334d | 4186 | |
642ef245 JB |
4187 | staticpro (&Qexpand_file_name); |
4188 | staticpro (&Qdirectory_file_name); | |
4189 | staticpro (&Qfile_name_directory); | |
4190 | staticpro (&Qfile_name_nondirectory); | |
4191 | staticpro (&Qunhandled_file_name_directory); | |
4192 | staticpro (&Qfile_name_as_directory); | |
15c65264 | 4193 | staticpro (&Qcopy_file); |
c34b559d | 4194 | staticpro (&Qmake_directory_internal); |
15c65264 RS |
4195 | staticpro (&Qdelete_directory); |
4196 | staticpro (&Qdelete_file); | |
4197 | staticpro (&Qrename_file); | |
4198 | staticpro (&Qadd_name_to_file); | |
4199 | staticpro (&Qmake_symbolic_link); | |
4200 | staticpro (&Qfile_exists_p); | |
4201 | staticpro (&Qfile_executable_p); | |
4202 | staticpro (&Qfile_readable_p); | |
4203 | staticpro (&Qfile_symlink_p); | |
4204 | staticpro (&Qfile_writable_p); | |
4205 | staticpro (&Qfile_directory_p); | |
4206 | staticpro (&Qfile_accessible_directory_p); | |
4207 | staticpro (&Qfile_modes); | |
4208 | staticpro (&Qset_file_modes); | |
4209 | staticpro (&Qfile_newer_than_file_p); | |
4210 | staticpro (&Qinsert_file_contents); | |
4211 | staticpro (&Qwrite_region); | |
4212 | staticpro (&Qverify_visited_file_modtime); | |
642ef245 JB |
4213 | |
4214 | Qfile_name_history = intern ("file-name-history"); | |
4215 | Fset (Qfile_name_history, Qnil); | |
15c65264 RS |
4216 | staticpro (&Qfile_name_history); |
4217 | ||
570d7624 JB |
4218 | Qfile_error = intern ("file-error"); |
4219 | staticpro (&Qfile_error); | |
4220 | Qfile_already_exists = intern("file-already-exists"); | |
4221 | staticpro (&Qfile_already_exists); | |
4222 | ||
5e570b75 | 4223 | #ifdef DOS_NT |
4c3c22f3 RS |
4224 | Qfind_buffer_file_type = intern ("find-buffer-file-type"); |
4225 | staticpro (&Qfind_buffer_file_type); | |
5e570b75 | 4226 | #endif /* DOS_NT */ |
4c3c22f3 | 4227 | |
d6a3cc15 RS |
4228 | Qcar_less_than_car = intern ("car-less-than-car"); |
4229 | staticpro (&Qcar_less_than_car); | |
4230 | ||
570d7624 JB |
4231 | Fput (Qfile_error, Qerror_conditions, |
4232 | Fcons (Qfile_error, Fcons (Qerror, Qnil))); | |
4233 | Fput (Qfile_error, Qerror_message, | |
4234 | build_string ("File error")); | |
4235 | ||
4236 | Fput (Qfile_already_exists, Qerror_conditions, | |
4237 | Fcons (Qfile_already_exists, | |
4238 | Fcons (Qfile_error, Fcons (Qerror, Qnil)))); | |
4239 | Fput (Qfile_already_exists, Qerror_message, | |
4240 | build_string ("File already exists")); | |
4241 | ||
4242 | DEFVAR_BOOL ("insert-default-directory", &insert_default_directory, | |
4243 | "*Non-nil means when reading a filename start with default dir in minibuffer."); | |
4244 | insert_default_directory = 1; | |
4245 | ||
4246 | DEFVAR_BOOL ("vms-stmlf-recfm", &vms_stmlf_recfm, | |
4247 | "*Non-nil means write new files with record format `stmlf'.\n\ | |
4248 | nil means use format `var'. This variable is meaningful only on VMS."); | |
4249 | vms_stmlf_recfm = 0; | |
4250 | ||
1d1826db RS |
4251 | DEFVAR_LISP ("file-name-handler-alist", &Vfile_name_handler_alist, |
4252 | "*Alist of elements (REGEXP . HANDLER) for file names handled specially.\n\ | |
4253 | If a file name matches REGEXP, then all I/O on that file is done by calling\n\ | |
4254 | HANDLER.\n\ | |
4255 | \n\ | |
4256 | The first argument given to HANDLER is the name of the I/O primitive\n\ | |
4257 | to be handled; the remaining arguments are the arguments that were\n\ | |
4258 | passed to that primitive. For example, if you do\n\ | |
4259 | (file-exists-p FILENAME)\n\ | |
4260 | and FILENAME is handled by HANDLER, then HANDLER is called like this:\n\ | |
642ef245 JB |
4261 | (funcall HANDLER 'file-exists-p FILENAME)\n\ |
4262 | The function `find-file-name-handler' checks this list for a handler\n\ | |
4263 | for its argument."); | |
09121adc RS |
4264 | Vfile_name_handler_alist = Qnil; |
4265 | ||
d6a3cc15 | 4266 | DEFVAR_LISP ("after-insert-file-functions", &Vafter_insert_file_functions, |
246cfea5 RS |
4267 | "A list of functions to be called at the end of `insert-file-contents'.\n\ |
4268 | Each is passed one argument, the number of bytes inserted. It should return\n\ | |
4269 | the new byte count, and leave point the same. If `insert-file-contents' is\n\ | |
4270 | intercepted by a handler from `file-name-handler-alist', that handler is\n\ | |
d6a3cc15 RS |
4271 | responsible for calling the after-insert-file-functions if appropriate."); |
4272 | Vafter_insert_file_functions = Qnil; | |
4273 | ||
4274 | DEFVAR_LISP ("write-region-annotate-functions", &Vwrite_region_annotate_functions, | |
246cfea5 RS |
4275 | "A list of functions to be called at the start of `write-region'.\n\ |
4276 | Each is passed two arguments, START and END as for `write-region'. It should\n\ | |
4277 | return a list of pairs (POSITION . STRING) of strings to be effectively\n\ | |
4278 | inserted at the specified positions of the file being written (1 means to\n\ | |
4279 | insert before the first byte written). The POSITIONs must be sorted into\n\ | |
4280 | increasing order. If there are several functions in the list, the several\n\ | |
d6a3cc15 RS |
4281 | lists are merged destructively."); |
4282 | Vwrite_region_annotate_functions = Qnil; | |
4283 | ||
6fc6f94b RS |
4284 | DEFVAR_LISP ("write-region-annotations-so-far", |
4285 | &Vwrite_region_annotations_so_far, | |
4286 | "When an annotation function is called, this holds the previous annotations.\n\ | |
4287 | These are the annotations made by other annotation functions\n\ | |
4288 | that were already called. See also `write-region-annotate-functions'."); | |
4289 | Vwrite_region_annotations_so_far = Qnil; | |
4290 | ||
82c2d839 | 4291 | DEFVAR_LISP ("inhibit-file-name-handlers", &Vinhibit_file_name_handlers, |
268466ed | 4292 | "A list of file name handlers that temporarily should not be used.\n\ |
e3e86241 | 4293 | This applies only to the operation `inhibit-file-name-operation'."); |
82c2d839 RS |
4294 | Vinhibit_file_name_handlers = Qnil; |
4295 | ||
a65970a0 RS |
4296 | DEFVAR_LISP ("inhibit-file-name-operation", &Vinhibit_file_name_operation, |
4297 | "The operation for which `inhibit-file-name-handlers' is applicable."); | |
4298 | Vinhibit_file_name_operation = Qnil; | |
4299 | ||
e54d3b5d RS |
4300 | DEFVAR_LISP ("auto-save-list-file-name", &Vauto_save_list_file_name, |
4301 | "File name in which we write a list of all auto save file names."); | |
4302 | Vauto_save_list_file_name = Qnil; | |
4303 | ||
642ef245 | 4304 | defsubr (&Sfind_file_name_handler); |
570d7624 JB |
4305 | defsubr (&Sfile_name_directory); |
4306 | defsubr (&Sfile_name_nondirectory); | |
642ef245 | 4307 | defsubr (&Sunhandled_file_name_directory); |
570d7624 JB |
4308 | defsubr (&Sfile_name_as_directory); |
4309 | defsubr (&Sdirectory_file_name); | |
4310 | defsubr (&Smake_temp_name); | |
4311 | defsubr (&Sexpand_file_name); | |
4312 | defsubr (&Ssubstitute_in_file_name); | |
4313 | defsubr (&Scopy_file); | |
9bbe01fb | 4314 | defsubr (&Smake_directory_internal); |
aa734e17 | 4315 | defsubr (&Sdelete_directory); |
570d7624 JB |
4316 | defsubr (&Sdelete_file); |
4317 | defsubr (&Srename_file); | |
4318 | defsubr (&Sadd_name_to_file); | |
4319 | #ifdef S_IFLNK | |
4320 | defsubr (&Smake_symbolic_link); | |
4321 | #endif /* S_IFLNK */ | |
4322 | #ifdef VMS | |
4323 | defsubr (&Sdefine_logical_name); | |
4324 | #endif /* VMS */ | |
4325 | #ifdef HPUX_NET | |
4326 | defsubr (&Ssysnetunam); | |
4327 | #endif /* HPUX_NET */ | |
4328 | defsubr (&Sfile_name_absolute_p); | |
4329 | defsubr (&Sfile_exists_p); | |
4330 | defsubr (&Sfile_executable_p); | |
4331 | defsubr (&Sfile_readable_p); | |
4332 | defsubr (&Sfile_writable_p); | |
4333 | defsubr (&Sfile_symlink_p); | |
4334 | defsubr (&Sfile_directory_p); | |
b72dea2a | 4335 | defsubr (&Sfile_accessible_directory_p); |
f793dc6c | 4336 | defsubr (&Sfile_regular_p); |
570d7624 JB |
4337 | defsubr (&Sfile_modes); |
4338 | defsubr (&Sset_file_modes); | |
c24e9a53 RS |
4339 | defsubr (&Sset_default_file_modes); |
4340 | defsubr (&Sdefault_file_modes); | |
570d7624 JB |
4341 | defsubr (&Sfile_newer_than_file_p); |
4342 | defsubr (&Sinsert_file_contents); | |
4343 | defsubr (&Swrite_region); | |
d6a3cc15 | 4344 | defsubr (&Scar_less_than_car); |
570d7624 JB |
4345 | defsubr (&Sverify_visited_file_modtime); |
4346 | defsubr (&Sclear_visited_file_modtime); | |
f5d5eccf | 4347 | defsubr (&Svisited_file_modtime); |
570d7624 JB |
4348 | defsubr (&Sset_visited_file_modtime); |
4349 | defsubr (&Sdo_auto_save); | |
4350 | defsubr (&Sset_buffer_auto_saved); | |
b60247d9 | 4351 | defsubr (&Sclear_buffer_auto_save_failure); |
570d7624 JB |
4352 | defsubr (&Srecent_auto_save_p); |
4353 | ||
4354 | defsubr (&Sread_file_name_internal); | |
4355 | defsubr (&Sread_file_name); | |
85ffea93 | 4356 | |
483a2e10 | 4357 | #ifdef unix |
85ffea93 | 4358 | defsubr (&Sunix_sync); |
483a2e10 | 4359 | #endif |
570d7624 | 4360 | } |