Commit | Line | Data |
---|---|---|
570d7624 | 1 | /* File IO for GNU Emacs. |
199607e4 | 2 | Copyright (C) 1985,86,87,88,93,94,95,96 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 | |
3b7ad313 EN |
18 | the Free Software Foundation, Inc., 59 Temple Place - Suite 330, |
19 | Boston, MA 02111-1307, USA. */ | |
570d7624 | 20 | |
18160b98 | 21 | #include <config.h> |
570d7624 | 22 | |
bb369dc6 RS |
23 | #if defined (USG5) || defined (BSD_SYSTEM) || defined (LINUX) |
24 | #include <fcntl.h> | |
25 | #endif | |
26 | ||
1b335d29 | 27 | #include <stdio.h> |
570d7624 JB |
28 | #include <sys/types.h> |
29 | #include <sys/stat.h> | |
bfb61299 | 30 | |
29beb080 RS |
31 | #ifdef HAVE_UNISTD_H |
32 | #include <unistd.h> | |
33 | #endif | |
34 | ||
f73b0ada BF |
35 | #if !defined (S_ISLNK) && defined (S_IFLNK) |
36 | # define S_ISLNK(m) (((m) & S_IFMT) == S_IFLNK) | |
37 | #endif | |
38 | ||
bb369dc6 RS |
39 | #if !defined (S_ISFIFO) && defined (S_IFIFO) |
40 | # define S_ISFIFO(m) (((m) & S_IFMT) == S_IFIFO) | |
41 | #endif | |
42 | ||
f73b0ada BF |
43 | #if !defined (S_ISREG) && defined (S_IFREG) |
44 | # define S_ISREG(m) (((m) & S_IFMT) == S_IFREG) | |
45 | #endif | |
46 | ||
bfb61299 | 47 | #ifdef VMS |
de5bf5d3 | 48 | #include "vms-pwd.h" |
bfb61299 | 49 | #else |
570d7624 | 50 | #include <pwd.h> |
bfb61299 JB |
51 | #endif |
52 | ||
4c3c22f3 RS |
53 | #ifdef MSDOS |
54 | #include "msdos.h" | |
55 | #include <sys/param.h> | |
01369dc7 RS |
56 | #if __DJGPP__ >= 2 |
57 | #include <fcntl.h> | |
58 | #include <string.h> | |
59 | #endif | |
4c3c22f3 RS |
60 | #endif |
61 | ||
570d7624 | 62 | #include <ctype.h> |
bfb61299 JB |
63 | |
64 | #ifdef VMS | |
3d9f5ce2 | 65 | #include "vmsdir.h" |
bfb61299 JB |
66 | #include <perror.h> |
67 | #include <stddef.h> | |
68 | #include <string.h> | |
bfb61299 JB |
69 | #endif |
70 | ||
570d7624 JB |
71 | #include <errno.h> |
72 | ||
bfb61299 | 73 | #ifndef vax11c |
570d7624 | 74 | extern int errno; |
570d7624 JB |
75 | #endif |
76 | ||
ce97267f | 77 | extern char *strerror (); |
570d7624 JB |
78 | |
79 | #ifdef APOLLO | |
80 | #include <sys/time.h> | |
81 | #endif | |
82 | ||
6e23c83e JB |
83 | #ifndef USG |
84 | #ifndef VMS | |
85 | #ifndef BSD4_1 | |
5e570b75 | 86 | #ifndef WINDOWSNT |
6e23c83e JB |
87 | #define HAVE_FSYNC |
88 | #endif | |
89 | #endif | |
90 | #endif | |
5e570b75 | 91 | #endif |
6e23c83e | 92 | |
570d7624 | 93 | #include "lisp.h" |
8d4e077b | 94 | #include "intervals.h" |
570d7624 | 95 | #include "buffer.h" |
6fdaa9a0 KH |
96 | #include "charset.h" |
97 | #include "coding.h" | |
570d7624 JB |
98 | #include "window.h" |
99 | ||
5e570b75 RS |
100 | #ifdef WINDOWSNT |
101 | #define NOMINMAX 1 | |
102 | #include <windows.h> | |
103 | #include <stdlib.h> | |
104 | #include <fcntl.h> | |
105 | #endif /* not WINDOWSNT */ | |
106 | ||
199607e4 RS |
107 | #ifdef DOS_NT |
108 | #define CORRECT_DIR_SEPS(s) \ | |
109 | do { if ('/' == DIRECTORY_SEP) dostounix_filename (s); \ | |
110 | else unixtodos_filename (s); \ | |
111 | } while (0) | |
112 | /* On Windows, drive letters must be alphabetic - on DOS, the Netware | |
113 | redirector allows the six letters between 'Z' and 'a' as well. */ | |
114 | #ifdef MSDOS | |
115 | #define IS_DRIVE(x) ((x) >= 'A' && (x) <= 'z') | |
116 | #endif | |
117 | #ifdef WINDOWSNT | |
118 | #define IS_DRIVE(x) isalpha (x) | |
119 | #endif | |
f54b565c MB |
120 | /* Need to lower-case the drive letter, or else expanded |
121 | filenames will sometimes compare inequal, because | |
122 | `expand-file-name' doesn't always down-case the drive letter. */ | |
123 | #define DRIVE_LETTER(x) (tolower (x)) | |
199607e4 RS |
124 | #endif |
125 | ||
570d7624 | 126 | #ifdef VMS |
570d7624 JB |
127 | #include <file.h> |
128 | #include <rmsdef.h> | |
129 | #include <fab.h> | |
130 | #include <nam.h> | |
131 | #endif | |
132 | ||
de5bf5d3 | 133 | #include "systime.h" |
570d7624 JB |
134 | |
135 | #ifdef HPUX | |
136 | #include <netio.h> | |
9b7828a5 | 137 | #ifndef HPUX8 |
47e7b9e5 | 138 | #ifndef HPUX9 |
570d7624 JB |
139 | #include <errnet.h> |
140 | #endif | |
9b7828a5 | 141 | #endif |
47e7b9e5 | 142 | #endif |
570d7624 JB |
143 | |
144 | #ifndef O_WRONLY | |
145 | #define O_WRONLY 1 | |
146 | #endif | |
147 | ||
4018b5ef RS |
148 | #ifndef O_RDONLY |
149 | #define O_RDONLY 0 | |
150 | #endif | |
151 | ||
570d7624 JB |
152 | #define min(a, b) ((a) < (b) ? (a) : (b)) |
153 | #define max(a, b) ((a) > (b) ? (a) : (b)) | |
154 | ||
155 | /* Nonzero during writing of auto-save files */ | |
156 | int auto_saving; | |
157 | ||
158 | /* Set by auto_save_1 to mode of original file so Fwrite_region will create | |
159 | a new file with the same mode as the original */ | |
160 | int auto_save_mode_bits; | |
161 | ||
199607e4 | 162 | /* Alist of elements (REGEXP . HANDLER) for file names |
32f4334d RS |
163 | whose I/O is done with a special handler. */ |
164 | Lisp_Object Vfile_name_handler_alist; | |
165 | ||
0d420e88 BG |
166 | /* Format for auto-save files */ |
167 | Lisp_Object Vauto_save_file_format; | |
168 | ||
169 | /* Lisp functions for translating file formats */ | |
170 | Lisp_Object Qformat_decode, Qformat_annotate_function; | |
171 | ||
d6a3cc15 RS |
172 | /* Functions to be called to process text properties in inserted file. */ |
173 | Lisp_Object Vafter_insert_file_functions; | |
174 | ||
175 | /* Functions to be called to create text property annotations for file. */ | |
176 | Lisp_Object Vwrite_region_annotate_functions; | |
177 | ||
6fc6f94b RS |
178 | /* During build_annotations, each time an annotation function is called, |
179 | this holds the annotations made by the previous functions. */ | |
180 | Lisp_Object Vwrite_region_annotations_so_far; | |
181 | ||
e54d3b5d RS |
182 | /* File name in which we write a list of all our auto save files. */ |
183 | Lisp_Object Vauto_save_list_file_name; | |
184 | ||
570d7624 JB |
185 | /* Nonzero means, when reading a filename in the minibuffer, |
186 | start out by inserting the default directory into the minibuffer. */ | |
187 | int insert_default_directory; | |
188 | ||
189 | /* On VMS, nonzero means write new files with record format stmlf. | |
190 | Zero means use var format. */ | |
191 | int vms_stmlf_recfm; | |
192 | ||
199607e4 RS |
193 | /* On NT, specifies the directory separator character, used (eg.) when |
194 | expanding file names. This can be bound to / or \. */ | |
195 | Lisp_Object Vdirectory_sep_char; | |
196 | ||
84f6296a RS |
197 | extern Lisp_Object Vuser_login_name; |
198 | ||
199 | extern int minibuf_level; | |
200 | ||
a65970a0 RS |
201 | /* These variables describe handlers that have "already" had a chance |
202 | to handle the current operation. | |
203 | ||
204 | Vinhibit_file_name_handlers is a list of file name handlers. | |
205 | Vinhibit_file_name_operation is the operation being handled. | |
206 | If we try to handle that operation, we ignore those handlers. */ | |
207 | ||
82c2d839 | 208 | static Lisp_Object Vinhibit_file_name_handlers; |
a65970a0 | 209 | static Lisp_Object Vinhibit_file_name_operation; |
82c2d839 | 210 | |
c0b7b21c | 211 | Lisp_Object Qfile_error, Qfile_already_exists, Qfile_date_error; |
570d7624 | 212 | |
15c65264 RS |
213 | Lisp_Object Qfile_name_history; |
214 | ||
d6a3cc15 RS |
215 | Lisp_Object Qcar_less_than_car; |
216 | ||
570d7624 JB |
217 | report_file_error (string, data) |
218 | char *string; | |
219 | Lisp_Object data; | |
220 | { | |
221 | Lisp_Object errstring; | |
222 | ||
a1f17b2d | 223 | errstring = build_string (strerror (errno)); |
570d7624 JB |
224 | |
225 | /* System error messages are capitalized. Downcase the initial | |
226 | unless it is followed by a slash. */ | |
227 | if (XSTRING (errstring)->data[1] != '/') | |
228 | XSTRING (errstring)->data[0] = DOWNCASE (XSTRING (errstring)->data[0]); | |
229 | ||
230 | while (1) | |
231 | Fsignal (Qfile_error, | |
232 | Fcons (build_string (string), Fcons (errstring, data))); | |
233 | } | |
b5148e85 RS |
234 | |
235 | close_file_unwind (fd) | |
236 | Lisp_Object fd; | |
237 | { | |
238 | close (XFASTINT (fd)); | |
239 | } | |
a1d2b64a RS |
240 | |
241 | /* Restore point, having saved it as a marker. */ | |
242 | ||
243 | restore_point_unwind (location) | |
199607e4 | 244 | Lisp_Object location; |
a1d2b64a RS |
245 | { |
246 | SET_PT (marker_position (location)); | |
247 | Fset_marker (location, Qnil, Qnil); | |
248 | } | |
570d7624 | 249 | \f |
0bf2eed2 | 250 | Lisp_Object Qexpand_file_name; |
273e0829 | 251 | Lisp_Object Qsubstitute_in_file_name; |
0bf2eed2 RS |
252 | Lisp_Object Qdirectory_file_name; |
253 | Lisp_Object Qfile_name_directory; | |
254 | Lisp_Object Qfile_name_nondirectory; | |
642ef245 | 255 | Lisp_Object Qunhandled_file_name_directory; |
0bf2eed2 | 256 | Lisp_Object Qfile_name_as_directory; |
32f4334d | 257 | Lisp_Object Qcopy_file; |
a6e6e718 | 258 | Lisp_Object Qmake_directory_internal; |
32f4334d RS |
259 | Lisp_Object Qdelete_directory; |
260 | Lisp_Object Qdelete_file; | |
261 | Lisp_Object Qrename_file; | |
262 | Lisp_Object Qadd_name_to_file; | |
263 | Lisp_Object Qmake_symbolic_link; | |
264 | Lisp_Object Qfile_exists_p; | |
265 | Lisp_Object Qfile_executable_p; | |
266 | Lisp_Object Qfile_readable_p; | |
32f4334d | 267 | Lisp_Object Qfile_writable_p; |
1f8653eb RS |
268 | Lisp_Object Qfile_symlink_p; |
269 | Lisp_Object Qaccess_file; | |
32f4334d | 270 | Lisp_Object Qfile_directory_p; |
adedc71d | 271 | Lisp_Object Qfile_regular_p; |
32f4334d RS |
272 | Lisp_Object Qfile_accessible_directory_p; |
273 | Lisp_Object Qfile_modes; | |
274 | Lisp_Object Qset_file_modes; | |
275 | Lisp_Object Qfile_newer_than_file_p; | |
276 | Lisp_Object Qinsert_file_contents; | |
277 | Lisp_Object Qwrite_region; | |
278 | Lisp_Object Qverify_visited_file_modtime; | |
3ec46acd | 279 | Lisp_Object Qset_visited_file_modtime; |
32f4334d | 280 | |
49307295 KH |
281 | DEFUN ("find-file-name-handler", Ffind_file_name_handler, Sfind_file_name_handler, 2, 2, 0, |
282 | "Return FILENAME's handler function for OPERATION, if it has one.\n\ | |
642ef245 JB |
283 | Otherwise, return nil.\n\ |
284 | A file name is handled if one of the regular expressions in\n\ | |
82c2d839 | 285 | `file-name-handler-alist' matches it.\n\n\ |
a65970a0 RS |
286 | If OPERATION equals `inhibit-file-name-operation', then we ignore\n\ |
287 | any handlers that are members of `inhibit-file-name-handlers',\n\ | |
288 | but we still do run any other handlers. This lets handlers\n\ | |
82c2d839 | 289 | use the standard functions without calling themselves recursively.") |
49307295 KH |
290 | (filename, operation) |
291 | Lisp_Object filename, operation; | |
32f4334d | 292 | { |
642ef245 | 293 | /* This function must not munge the match data. */ |
a65970a0 | 294 | Lisp_Object chain, inhibited_handlers; |
642ef245 | 295 | |
e4432095 JB |
296 | CHECK_STRING (filename, 0); |
297 | ||
a65970a0 RS |
298 | if (EQ (operation, Vinhibit_file_name_operation)) |
299 | inhibited_handlers = Vinhibit_file_name_handlers; | |
300 | else | |
301 | inhibited_handlers = Qnil; | |
82c2d839 | 302 | |
93c30b5f | 303 | for (chain = Vfile_name_handler_alist; CONSP (chain); |
32f4334d RS |
304 | chain = XCONS (chain)->cdr) |
305 | { | |
306 | Lisp_Object elt; | |
307 | elt = XCONS (chain)->car; | |
93c30b5f | 308 | if (CONSP (elt)) |
32f4334d RS |
309 | { |
310 | Lisp_Object string; | |
311 | string = XCONS (elt)->car; | |
93c30b5f | 312 | if (STRINGP (string) && fast_string_match (string, filename) >= 0) |
a65970a0 RS |
313 | { |
314 | Lisp_Object handler, tem; | |
315 | ||
316 | handler = XCONS (elt)->cdr; | |
317 | tem = Fmemq (handler, inhibited_handlers); | |
318 | if (NILP (tem)) | |
319 | return handler; | |
320 | } | |
32f4334d | 321 | } |
642ef245 JB |
322 | |
323 | QUIT; | |
32f4334d RS |
324 | } |
325 | return Qnil; | |
326 | } | |
327 | \f | |
570d7624 JB |
328 | DEFUN ("file-name-directory", Ffile_name_directory, Sfile_name_directory, |
329 | 1, 1, 0, | |
3b7f6e60 EN |
330 | "Return the directory component in file name FILENAME.\n\ |
331 | Return nil if FILENAME does not include a directory.\n\ | |
570d7624 JB |
332 | Otherwise return a directory spec.\n\ |
333 | Given a Unix syntax file name, returns a string ending in slash;\n\ | |
334 | on VMS, perhaps instead a string ending in `:', `]' or `>'.") | |
3b7f6e60 EN |
335 | (filename) |
336 | Lisp_Object filename; | |
570d7624 JB |
337 | { |
338 | register unsigned char *beg; | |
339 | register unsigned char *p; | |
0bf2eed2 | 340 | Lisp_Object handler; |
570d7624 | 341 | |
3b7f6e60 | 342 | CHECK_STRING (filename, 0); |
570d7624 | 343 | |
0bf2eed2 RS |
344 | /* If the file name has special constructs in it, |
345 | call the corresponding file handler. */ | |
3b7f6e60 | 346 | handler = Ffind_file_name_handler (filename, Qfile_name_directory); |
0bf2eed2 | 347 | if (!NILP (handler)) |
3b7f6e60 | 348 | return call2 (handler, Qfile_name_directory, filename); |
0bf2eed2 | 349 | |
4c3c22f3 | 350 | #ifdef FILE_SYSTEM_CASE |
3b7f6e60 | 351 | filename = FILE_SYSTEM_CASE (filename); |
4c3c22f3 | 352 | #endif |
3b7f6e60 | 353 | beg = XSTRING (filename)->data; |
199607e4 RS |
354 | #ifdef DOS_NT |
355 | beg = strcpy (alloca (strlen (beg) + 1), beg); | |
356 | #endif | |
3b7f6e60 | 357 | p = beg + XSTRING (filename)->size; |
570d7624 | 358 | |
199607e4 | 359 | while (p != beg && !IS_DIRECTORY_SEP (p[-1]) |
570d7624 JB |
360 | #ifdef VMS |
361 | && p[-1] != ':' && p[-1] != ']' && p[-1] != '>' | |
362 | #endif /* VMS */ | |
199607e4 RS |
363 | #ifdef DOS_NT |
364 | /* only recognise drive specifier at beginning */ | |
365 | && !(p[-1] == ':' && p == beg + 2) | |
366 | #endif | |
570d7624 JB |
367 | ) p--; |
368 | ||
369 | if (p == beg) | |
370 | return Qnil; | |
5e570b75 | 371 | #ifdef DOS_NT |
4c3c22f3 RS |
372 | /* Expansion of "c:" to drive and default directory. */ |
373 | if (p == beg + 2 && beg[1] == ':') | |
374 | { | |
4c3c22f3 | 375 | /* MAXPATHLEN+1 is guaranteed to be enough space for getdefdir. */ |
199607e4 RS |
376 | unsigned char *res = alloca (MAXPATHLEN + 1); |
377 | if (getdefdir (toupper (*beg) - 'A' + 1, res)) | |
4c3c22f3 | 378 | { |
199607e4 | 379 | if (!IS_DIRECTORY_SEP (res[strlen (res) - 1])) |
4c3c22f3 RS |
380 | strcat (res, "/"); |
381 | beg = res; | |
382 | p = beg + strlen (beg); | |
383 | } | |
384 | } | |
199607e4 | 385 | CORRECT_DIR_SEPS (beg); |
5e570b75 | 386 | #endif /* DOS_NT */ |
570d7624 JB |
387 | return make_string (beg, p - beg); |
388 | } | |
389 | ||
390 | DEFUN ("file-name-nondirectory", Ffile_name_nondirectory, Sfile_name_nondirectory, | |
391 | 1, 1, 0, | |
3b7f6e60 | 392 | "Return file name FILENAME sans its directory.\n\ |
570d7624 JB |
393 | For example, in a Unix-syntax file name,\n\ |
394 | this is everything after the last slash,\n\ | |
395 | or the entire name if it contains no slash.") | |
3b7f6e60 EN |
396 | (filename) |
397 | Lisp_Object filename; | |
570d7624 JB |
398 | { |
399 | register unsigned char *beg, *p, *end; | |
0bf2eed2 | 400 | Lisp_Object handler; |
570d7624 | 401 | |
3b7f6e60 | 402 | CHECK_STRING (filename, 0); |
570d7624 | 403 | |
0bf2eed2 RS |
404 | /* If the file name has special constructs in it, |
405 | call the corresponding file handler. */ | |
3b7f6e60 | 406 | handler = Ffind_file_name_handler (filename, Qfile_name_nondirectory); |
0bf2eed2 | 407 | if (!NILP (handler)) |
3b7f6e60 | 408 | return call2 (handler, Qfile_name_nondirectory, filename); |
0bf2eed2 | 409 | |
3b7f6e60 EN |
410 | beg = XSTRING (filename)->data; |
411 | end = p = beg + XSTRING (filename)->size; | |
570d7624 | 412 | |
199607e4 | 413 | while (p != beg && !IS_DIRECTORY_SEP (p[-1]) |
570d7624 JB |
414 | #ifdef VMS |
415 | && p[-1] != ':' && p[-1] != ']' && p[-1] != '>' | |
416 | #endif /* VMS */ | |
199607e4 RS |
417 | #ifdef DOS_NT |
418 | /* only recognise drive specifier at beginning */ | |
419 | && !(p[-1] == ':' && p == beg + 2) | |
420 | #endif | |
570d7624 JB |
421 | ) p--; |
422 | ||
423 | return make_string (p, end - p); | |
424 | } | |
642ef245 JB |
425 | |
426 | DEFUN ("unhandled-file-name-directory", Funhandled_file_name_directory, Sunhandled_file_name_directory, 1, 1, 0, | |
427 | "Return a directly usable directory name somehow associated with FILENAME.\n\ | |
428 | A `directly usable' directory name is one that may be used without the\n\ | |
429 | intervention of any file handler.\n\ | |
430 | If FILENAME is a directly usable file itself, return\n\ | |
431 | (file-name-directory FILENAME).\n\ | |
432 | The `call-process' and `start-process' functions use this function to\n\ | |
433 | get a current directory to run processes in.") | |
434 | (filename) | |
435 | Lisp_Object filename; | |
436 | { | |
437 | Lisp_Object handler; | |
438 | ||
439 | /* If the file name has special constructs in it, | |
440 | call the corresponding file handler. */ | |
49307295 | 441 | handler = Ffind_file_name_handler (filename, Qunhandled_file_name_directory); |
642ef245 JB |
442 | if (!NILP (handler)) |
443 | return call2 (handler, Qunhandled_file_name_directory, filename); | |
444 | ||
445 | return Ffile_name_directory (filename); | |
446 | } | |
447 | ||
570d7624 JB |
448 | \f |
449 | char * | |
450 | file_name_as_directory (out, in) | |
451 | char *out, *in; | |
452 | { | |
453 | int size = strlen (in) - 1; | |
454 | ||
455 | strcpy (out, in); | |
456 | ||
457 | #ifdef VMS | |
458 | /* Is it already a directory string? */ | |
459 | if (in[size] == ':' || in[size] == ']' || in[size] == '>') | |
460 | return out; | |
461 | /* Is it a VMS directory file name? If so, hack VMS syntax. */ | |
462 | else if (! index (in, '/') | |
463 | && ((size > 3 && ! strcmp (&in[size - 3], ".DIR")) | |
464 | || (size > 3 && ! strcmp (&in[size - 3], ".dir")) | |
465 | || (size > 5 && (! strncmp (&in[size - 5], ".DIR", 4) | |
466 | || ! strncmp (&in[size - 5], ".dir", 4)) | |
467 | && (in[size - 1] == '.' || in[size - 1] == ';') | |
468 | && in[size] == '1'))) | |
469 | { | |
470 | register char *p, *dot; | |
471 | char brack; | |
472 | ||
473 | /* x.dir -> [.x] | |
474 | dir:x.dir --> dir:[x] | |
475 | dir:[x]y.dir --> dir:[x.y] */ | |
476 | p = in + size; | |
477 | while (p != in && *p != ':' && *p != '>' && *p != ']') p--; | |
478 | if (p != in) | |
479 | { | |
480 | strncpy (out, in, p - in); | |
481 | out[p - in] = '\0'; | |
482 | if (*p == ':') | |
483 | { | |
484 | brack = ']'; | |
485 | strcat (out, ":["); | |
486 | } | |
487 | else | |
488 | { | |
489 | brack = *p; | |
490 | strcat (out, "."); | |
491 | } | |
492 | p++; | |
493 | } | |
494 | else | |
495 | { | |
496 | brack = ']'; | |
497 | strcpy (out, "[."); | |
498 | } | |
bfb61299 JB |
499 | dot = index (p, '.'); |
500 | if (dot) | |
570d7624 JB |
501 | { |
502 | /* blindly remove any extension */ | |
503 | size = strlen (out) + (dot - p); | |
504 | strncat (out, p, dot - p); | |
505 | } | |
506 | else | |
507 | { | |
508 | strcat (out, p); | |
509 | size = strlen (out); | |
510 | } | |
511 | out[size++] = brack; | |
512 | out[size] = '\0'; | |
513 | } | |
514 | #else /* not VMS */ | |
515 | /* For Unix syntax, Append a slash if necessary */ | |
199607e4 | 516 | if (!IS_DIRECTORY_SEP (out[size])) |
5e570b75 RS |
517 | { |
518 | out[size + 1] = DIRECTORY_SEP; | |
519 | out[size + 2] = '\0'; | |
520 | } | |
199607e4 RS |
521 | #ifdef DOS_NT |
522 | CORRECT_DIR_SEPS (out); | |
523 | #endif | |
570d7624 JB |
524 | #endif /* not VMS */ |
525 | return out; | |
526 | } | |
527 | ||
528 | DEFUN ("file-name-as-directory", Ffile_name_as_directory, | |
529 | Sfile_name_as_directory, 1, 1, 0, | |
530 | "Return a string representing file FILENAME interpreted as a directory.\n\ | |
531 | This operation exists because a directory is also a file, but its name as\n\ | |
532 | a directory is different from its name as a file.\n\ | |
533 | The result can be used as the value of `default-directory'\n\ | |
534 | or passed as second argument to `expand-file-name'.\n\ | |
535 | For a Unix-syntax file name, just appends a slash.\n\ | |
536 | On VMS, converts \"[X]FOO.DIR\" to \"[X.FOO]\", etc.") | |
537 | (file) | |
538 | Lisp_Object file; | |
539 | { | |
540 | char *buf; | |
0bf2eed2 | 541 | Lisp_Object handler; |
570d7624 JB |
542 | |
543 | CHECK_STRING (file, 0); | |
265a9e55 | 544 | if (NILP (file)) |
570d7624 | 545 | return Qnil; |
0bf2eed2 RS |
546 | |
547 | /* If the file name has special constructs in it, | |
548 | call the corresponding file handler. */ | |
49307295 | 549 | handler = Ffind_file_name_handler (file, Qfile_name_as_directory); |
0bf2eed2 RS |
550 | if (!NILP (handler)) |
551 | return call2 (handler, Qfile_name_as_directory, file); | |
552 | ||
570d7624 JB |
553 | buf = (char *) alloca (XSTRING (file)->size + 10); |
554 | return build_string (file_name_as_directory (buf, XSTRING (file)->data)); | |
555 | } | |
556 | \f | |
557 | /* | |
558 | * Convert from directory name to filename. | |
559 | * On VMS: | |
560 | * xyzzy:[mukesh.emacs] => xyzzy:[mukesh]emacs.dir.1 | |
561 | * xyzzy:[mukesh] => xyzzy:[000000]mukesh.dir.1 | |
199607e4 | 562 | * On UNIX, it's simple: just make sure there isn't a terminating / |
570d7624 JB |
563 | |
564 | * Value is nonzero if the string output is different from the input. | |
565 | */ | |
566 | ||
567 | directory_file_name (src, dst) | |
568 | char *src, *dst; | |
569 | { | |
570 | long slen; | |
571 | #ifdef VMS | |
572 | long rlen; | |
573 | char * ptr, * rptr; | |
574 | char bracket; | |
575 | struct FAB fab = cc$rms_fab; | |
576 | struct NAM nam = cc$rms_nam; | |
577 | char esa[NAM$C_MAXRSS]; | |
578 | #endif /* VMS */ | |
579 | ||
580 | slen = strlen (src); | |
581 | #ifdef VMS | |
582 | if (! index (src, '/') | |
583 | && (src[slen - 1] == ']' | |
584 | || src[slen - 1] == ':' | |
585 | || src[slen - 1] == '>')) | |
586 | { | |
587 | /* VMS style - convert [x.y.z] to [x.y]z, [x] to [000000]x */ | |
588 | fab.fab$l_fna = src; | |
589 | fab.fab$b_fns = slen; | |
590 | fab.fab$l_nam = &nam; | |
591 | fab.fab$l_fop = FAB$M_NAM; | |
592 | ||
593 | nam.nam$l_esa = esa; | |
594 | nam.nam$b_ess = sizeof esa; | |
595 | nam.nam$b_nop |= NAM$M_SYNCHK; | |
596 | ||
597 | /* We call SYS$PARSE to handle such things as [--] for us. */ | |
199607e4 | 598 | if (SYS$PARSE (&fab, 0, 0) == RMS$_NORMAL) |
570d7624 JB |
599 | { |
600 | slen = nam.nam$b_esl; | |
601 | if (esa[slen - 1] == ';' && esa[slen - 2] == '.') | |
602 | slen -= 2; | |
603 | esa[slen] = '\0'; | |
604 | src = esa; | |
605 | } | |
606 | if (src[slen - 1] != ']' && src[slen - 1] != '>') | |
607 | { | |
608 | /* what about when we have logical_name:???? */ | |
609 | if (src[slen - 1] == ':') | |
5e570b75 | 610 | { /* Xlate logical name and see what we get */ |
570d7624 JB |
611 | ptr = strcpy (dst, src); /* upper case for getenv */ |
612 | while (*ptr) | |
613 | { | |
614 | if ('a' <= *ptr && *ptr <= 'z') | |
615 | *ptr -= 040; | |
616 | ptr++; | |
617 | } | |
5e570b75 | 618 | dst[slen - 1] = 0; /* remove colon */ |
570d7624 JB |
619 | if (!(src = egetenv (dst))) |
620 | return 0; | |
621 | /* should we jump to the beginning of this procedure? | |
622 | Good points: allows us to use logical names that xlate | |
623 | to Unix names, | |
624 | Bad points: can be a problem if we just translated to a device | |
625 | name... | |
626 | For now, I'll punt and always expect VMS names, and hope for | |
627 | the best! */ | |
628 | slen = strlen (src); | |
629 | if (src[slen - 1] != ']' && src[slen - 1] != '>') | |
630 | { /* no recursion here! */ | |
631 | strcpy (dst, src); | |
632 | return 0; | |
633 | } | |
634 | } | |
635 | else | |
5e570b75 | 636 | { /* not a directory spec */ |
570d7624 JB |
637 | strcpy (dst, src); |
638 | return 0; | |
639 | } | |
640 | } | |
641 | bracket = src[slen - 1]; | |
642 | ||
643 | /* If bracket is ']' or '>', bracket - 2 is the corresponding | |
644 | opening bracket. */ | |
bfb61299 JB |
645 | ptr = index (src, bracket - 2); |
646 | if (ptr == 0) | |
570d7624 JB |
647 | { /* no opening bracket */ |
648 | strcpy (dst, src); | |
649 | return 0; | |
650 | } | |
651 | if (!(rptr = rindex (src, '.'))) | |
652 | rptr = ptr; | |
653 | slen = rptr - src; | |
654 | strncpy (dst, src, slen); | |
655 | dst[slen] = '\0'; | |
656 | if (*rptr == '.') | |
657 | { | |
658 | dst[slen++] = bracket; | |
659 | dst[slen] = '\0'; | |
660 | } | |
661 | else | |
662 | { | |
663 | /* If we have the top-level of a rooted directory (i.e. xx:[000000]), | |
664 | then translate the device and recurse. */ | |
665 | if (dst[slen - 1] == ':' | |
5e570b75 | 666 | && dst[slen - 2] != ':' /* skip decnet nodes */ |
199607e4 | 667 | && strcmp (src + slen, "[000000]") == 0) |
570d7624 JB |
668 | { |
669 | dst[slen - 1] = '\0'; | |
670 | if ((ptr = egetenv (dst)) | |
671 | && (rlen = strlen (ptr) - 1) > 0 | |
672 | && (ptr[rlen] == ']' || ptr[rlen] == '>') | |
673 | && ptr[rlen - 1] == '.') | |
674 | { | |
72b21817 RS |
675 | char * buf = (char *) alloca (strlen (ptr) + 1); |
676 | strcpy (buf, ptr); | |
677 | buf[rlen - 1] = ']'; | |
678 | buf[rlen] = '\0'; | |
679 | return directory_file_name (buf, dst); | |
570d7624 JB |
680 | } |
681 | else | |
682 | dst[slen - 1] = ':'; | |
683 | } | |
684 | strcat (dst, "[000000]"); | |
685 | slen += 8; | |
686 | } | |
687 | rptr++; | |
688 | rlen = strlen (rptr) - 1; | |
689 | strncat (dst, rptr, rlen); | |
690 | dst[slen + rlen] = '\0'; | |
691 | strcat (dst, ".DIR.1"); | |
692 | return 1; | |
693 | } | |
694 | #endif /* VMS */ | |
695 | /* Process as Unix format: just remove any final slash. | |
696 | But leave "/" unchanged; do not change it to "". */ | |
697 | strcpy (dst, src); | |
125feee8 RS |
698 | #ifdef APOLLO |
699 | /* Handle // as root for apollo's. */ | |
700 | if ((slen > 2 && dst[slen - 1] == '/') | |
701 | || (slen > 1 && dst[0] != '/' && dst[slen - 1] == '/')) | |
702 | dst[slen - 1] = 0; | |
703 | #else | |
199607e4 | 704 | if (slen > 1 |
5e570b75 | 705 | && IS_DIRECTORY_SEP (dst[slen - 1]) |
4592782e RS |
706 | #ifdef DOS_NT |
707 | && !IS_ANY_SEP (dst[slen - 2]) | |
708 | #endif | |
709 | ) | |
570d7624 | 710 | dst[slen - 1] = 0; |
199607e4 RS |
711 | #endif |
712 | #ifdef DOS_NT | |
713 | CORRECT_DIR_SEPS (dst); | |
125feee8 | 714 | #endif |
570d7624 JB |
715 | return 1; |
716 | } | |
717 | ||
718 | DEFUN ("directory-file-name", Fdirectory_file_name, Sdirectory_file_name, | |
719 | 1, 1, 0, | |
3b7f6e60 EN |
720 | "Returns the file name of the directory named DIRECTORY.\n\ |
721 | This is the name of the file that holds the data for the directory DIRECTORY.\n\ | |
570d7624 JB |
722 | This operation exists because a directory is also a file, but its name as\n\ |
723 | a directory is different from its name as a file.\n\ | |
724 | In Unix-syntax, this function just removes the final slash.\n\ | |
725 | On VMS, given a VMS-syntax directory name such as \"[X.Y]\",\n\ | |
726 | it returns a file name such as \"[X]Y.DIR.1\".") | |
727 | (directory) | |
728 | Lisp_Object directory; | |
729 | { | |
730 | char *buf; | |
0bf2eed2 | 731 | Lisp_Object handler; |
570d7624 JB |
732 | |
733 | CHECK_STRING (directory, 0); | |
734 | ||
265a9e55 | 735 | if (NILP (directory)) |
570d7624 | 736 | return Qnil; |
0bf2eed2 RS |
737 | |
738 | /* If the file name has special constructs in it, | |
739 | call the corresponding file handler. */ | |
49307295 | 740 | handler = Ffind_file_name_handler (directory, Qdirectory_file_name); |
0bf2eed2 RS |
741 | if (!NILP (handler)) |
742 | return call2 (handler, Qdirectory_file_name, directory); | |
743 | ||
570d7624 JB |
744 | #ifdef VMS |
745 | /* 20 extra chars is insufficient for VMS, since we might perform a | |
746 | logical name translation. an equivalence string can be up to 255 | |
747 | chars long, so grab that much extra space... - sss */ | |
748 | buf = (char *) alloca (XSTRING (directory)->size + 20 + 255); | |
749 | #else | |
750 | buf = (char *) alloca (XSTRING (directory)->size + 20); | |
751 | #endif | |
752 | directory_file_name (XSTRING (directory)->data, buf); | |
753 | return build_string (buf); | |
754 | } | |
755 | ||
756 | DEFUN ("make-temp-name", Fmake_temp_name, Smake_temp_name, 1, 1, 0, | |
757 | "Generate temporary file name (string) starting with PREFIX (a string).\n\ | |
758 | The Emacs process number forms part of the result,\n\ | |
759 | so there is no danger of generating a name being used by another process.") | |
760 | (prefix) | |
761 | Lisp_Object prefix; | |
762 | { | |
763 | Lisp_Object val; | |
3a3bfb18 | 764 | #ifdef MSDOS |
ce6212a5 | 765 | /* Don't use too many characters of the restricted 8+3 DOS |
3a3bfb18 | 766 | filename space. */ |
ce6212a5 | 767 | val = concat2 (prefix, build_string ("a.XXX")); |
3a3bfb18 | 768 | #else |
570d7624 | 769 | val = concat2 (prefix, build_string ("XXXXXX")); |
3a3bfb18 | 770 | #endif |
570d7624 | 771 | mktemp (XSTRING (val)->data); |
199607e4 RS |
772 | #ifdef DOS_NT |
773 | CORRECT_DIR_SEPS (XSTRING (val)->data); | |
774 | #endif | |
570d7624 JB |
775 | return val; |
776 | } | |
777 | \f | |
778 | DEFUN ("expand-file-name", Fexpand_file_name, Sexpand_file_name, 1, 2, 0, | |
3b7f6e60 EN |
779 | "Convert filename NAME to absolute, and canonicalize it.\n\ |
780 | Second arg DEFAULT-DIRECTORY is directory to start with if NAME is relative\n\ | |
781 | (does not start with slash); if DEFAULT-DIRECTORY is nil or missing,\n\ | |
570d7624 | 782 | the current buffer's value of default-directory is used.\n\ |
199607e4 RS |
783 | File name components that are `.' are removed, and \n\ |
784 | so are file name components followed by `..', along with the `..' itself;\n\ | |
b72dea2a | 785 | note that these simplifications are done without checking the resulting\n\ |
199607e4 | 786 | file names in the file system.\n\ |
b72dea2a JB |
787 | An initial `~/' expands to your home directory.\n\ |
788 | An initial `~USER/' expands to USER's home directory.\n\ | |
570d7624 | 789 | See also the function `substitute-in-file-name'.") |
3b7f6e60 EN |
790 | (name, default_directory) |
791 | Lisp_Object name, default_directory; | |
570d7624 JB |
792 | { |
793 | unsigned char *nm; | |
199607e4 | 794 | |
570d7624 JB |
795 | register unsigned char *newdir, *p, *o; |
796 | int tlen; | |
797 | unsigned char *target; | |
798 | struct passwd *pw; | |
570d7624 JB |
799 | #ifdef VMS |
800 | unsigned char * colon = 0; | |
801 | unsigned char * close = 0; | |
802 | unsigned char * slash = 0; | |
803 | unsigned char * brack = 0; | |
804 | int lbrack = 0, rbrack = 0; | |
805 | int dots = 0; | |
806 | #endif /* VMS */ | |
5e570b75 | 807 | #ifdef DOS_NT |
199607e4 | 808 | int drive = 0; |
9a1dc3be | 809 | int collapse_newdir = 1; |
5e570b75 | 810 | #endif /* DOS_NT */ |
199607e4 | 811 | int length; |
0bf2eed2 | 812 | Lisp_Object handler; |
199607e4 | 813 | |
570d7624 JB |
814 | CHECK_STRING (name, 0); |
815 | ||
0bf2eed2 RS |
816 | /* If the file name has special constructs in it, |
817 | call the corresponding file handler. */ | |
49307295 | 818 | handler = Ffind_file_name_handler (name, Qexpand_file_name); |
0bf2eed2 | 819 | if (!NILP (handler)) |
3b7f6e60 | 820 | return call3 (handler, Qexpand_file_name, name, default_directory); |
58fc9587 | 821 | |
3b7f6e60 EN |
822 | /* Use the buffer's default-directory if DEFAULT_DIRECTORY is omitted. */ |
823 | if (NILP (default_directory)) | |
824 | default_directory = current_buffer->directory; | |
825 | CHECK_STRING (default_directory, 1); | |
58fc9587 | 826 | |
3b7f6e60 | 827 | if (!NILP (default_directory)) |
273e0829 | 828 | { |
3b7f6e60 | 829 | handler = Ffind_file_name_handler (default_directory, Qexpand_file_name); |
273e0829 | 830 | if (!NILP (handler)) |
3b7f6e60 | 831 | return call3 (handler, Qexpand_file_name, name, default_directory); |
273e0829 | 832 | } |
0bf2eed2 | 833 | |
3b7f6e60 | 834 | o = XSTRING (default_directory)->data; |
5e570b75 | 835 | |
3b7f6e60 | 836 | /* Make sure DEFAULT_DIRECTORY is properly expanded. |
f14b1c68 | 837 | It would be better to do this down below where we actually use |
3b7f6e60 | 838 | default_directory. Unfortunately, calling Fexpand_file_name recursively |
f14b1c68 JB |
839 | could invoke GC, and the strings might be relocated. This would |
840 | be annoying because we have pointers into strings lying around | |
841 | that would need adjusting, and people would add new pointers to | |
842 | the code and forget to adjust them, resulting in intermittent bugs. | |
4ad827c5 RS |
843 | Putting this call here avoids all that crud. |
844 | ||
845 | The EQ test avoids infinite recursion. */ | |
3b7f6e60 | 846 | if (! NILP (default_directory) && !EQ (default_directory, name) |
199607e4 RS |
847 | /* Save time in some common cases - as long as default_directory |
848 | is not relative, it can be canonicalized with name below (if it | |
849 | is needed at all) without requiring it to be expanded now. */ | |
01937013 | 850 | #ifdef DOS_NT |
199607e4 RS |
851 | /* Detect MSDOS file names with drive specifiers. */ |
852 | && ! (IS_DRIVE (o[0]) && (IS_DEVICE_SEP (o[1]) && IS_DIRECTORY_SEP (o[2]))) | |
853 | #ifdef WINDOWSNT | |
854 | /* Detect Windows file names in UNC format. */ | |
855 | && ! (IS_DIRECTORY_SEP (o[0]) && IS_DIRECTORY_SEP (o[1])) | |
01937013 | 856 | #endif |
199607e4 RS |
857 | #else /* not DOS_NT */ |
858 | /* Detect Unix absolute file names (/... alone is not absolute on | |
859 | DOS or Windows). */ | |
860 | && ! (IS_DIRECTORY_SEP (o[0])) | |
861 | #endif /* not DOS_NT */ | |
862 | ) | |
f14b1c68 JB |
863 | { |
864 | struct gcpro gcpro1; | |
865 | ||
866 | GCPRO1 (name); | |
3b7f6e60 | 867 | default_directory = Fexpand_file_name (default_directory, Qnil); |
f14b1c68 JB |
868 | UNGCPRO; |
869 | } | |
870 | ||
570d7624 JB |
871 | #ifdef VMS |
872 | /* Filenames on VMS are always upper case. */ | |
873 | name = Fupcase (name); | |
874 | #endif | |
4c3c22f3 RS |
875 | #ifdef FILE_SYSTEM_CASE |
876 | name = FILE_SYSTEM_CASE (name); | |
877 | #endif | |
570d7624 JB |
878 | |
879 | nm = XSTRING (name)->data; | |
a5a1cc06 | 880 | |
5e570b75 | 881 | #ifdef DOS_NT |
199607e4 RS |
882 | /* We will force directory separators to be either all \ or /, so make |
883 | a local copy to modify, even if there ends up being no change. */ | |
884 | nm = strcpy (alloca (strlen (nm) + 1), nm); | |
885 | ||
886 | /* Find and remove drive specifier if present; this makes nm absolute | |
887 | even if the rest of the name appears to be relative. */ | |
4c3c22f3 RS |
888 | { |
889 | unsigned char *colon = rindex (nm, ':'); | |
199607e4 | 890 | |
4c3c22f3 | 891 | if (colon) |
199607e4 RS |
892 | /* Only recognize colon as part of drive specifier if there is a |
893 | single alphabetic character preceeding the colon (and if the | |
894 | character before the drive letter, if present, is a directory | |
895 | separator); this is to support the remote system syntax used by | |
896 | ange-ftp, and the "po:username" syntax for POP mailboxes. */ | |
897 | look_again: | |
4c3c22f3 RS |
898 | if (nm == colon) |
899 | nm++; | |
199607e4 RS |
900 | else if (IS_DRIVE (colon[-1]) |
901 | && (colon == nm + 1 || IS_DIRECTORY_SEP (colon[-2]))) | |
4c3c22f3 | 902 | { |
3c455a3b | 903 | drive = colon[-1]; |
4c3c22f3 | 904 | nm = colon + 1; |
199607e4 RS |
905 | } |
906 | else | |
907 | { | |
908 | while (--colon >= nm) | |
909 | if (colon[0] == ':') | |
910 | goto look_again; | |
911 | } | |
4c3c22f3 | 912 | } |
5e570b75 | 913 | #endif /* DOS_NT */ |
4c3c22f3 | 914 | |
199607e4 RS |
915 | #ifdef WINDOWSNT |
916 | /* Discard any previous drive specifier if nm is now in UNC format. */ | |
917 | if (IS_DIRECTORY_SEP (nm[0]) && IS_DIRECTORY_SEP (nm[1])) | |
918 | { | |
919 | drive = 0; | |
920 | } | |
921 | #endif | |
922 | ||
923 | /* If nm is absolute, look for /./ or /../ sequences; if none are | |
924 | found, we can probably return right away. We will avoid allocating | |
925 | a new string if name is already fully expanded. */ | |
570d7624 | 926 | if ( |
5e570b75 | 927 | IS_DIRECTORY_SEP (nm[0]) |
199607e4 RS |
928 | #ifdef MSDOS |
929 | && drive | |
930 | #endif | |
931 | #ifdef WINDOWSNT | |
932 | && (drive || IS_DIRECTORY_SEP (nm[1])) | |
933 | #endif | |
570d7624 JB |
934 | #ifdef VMS |
935 | || index (nm, ':') | |
936 | #endif /* VMS */ | |
937 | ) | |
938 | { | |
f14b1c68 JB |
939 | /* If it turns out that the filename we want to return is just a |
940 | suffix of FILENAME, we don't need to go through and edit | |
941 | things; we just need to construct a new string using data | |
942 | starting at the middle of FILENAME. If we set lose to a | |
943 | non-zero value, that means we've discovered that we can't do | |
944 | that cool trick. */ | |
945 | int lose = 0; | |
946 | ||
570d7624 | 947 | p = nm; |
570d7624 JB |
948 | while (*p) |
949 | { | |
199607e4 | 950 | /* Since we know the name is absolute, we can assume that each |
c77d647e JB |
951 | element starts with a "/". */ |
952 | ||
c77d647e | 953 | /* "." and ".." are hairy. */ |
5e570b75 | 954 | if (IS_DIRECTORY_SEP (p[0]) |
c77d647e | 955 | && p[1] == '.' |
5e570b75 | 956 | && (IS_DIRECTORY_SEP (p[2]) |
c77d647e | 957 | || p[2] == 0 |
5e570b75 | 958 | || (p[2] == '.' && (IS_DIRECTORY_SEP (p[3]) |
c77d647e | 959 | || p[3] == 0)))) |
570d7624 JB |
960 | lose = 1; |
961 | #ifdef VMS | |
962 | if (p[0] == '\\') | |
963 | lose = 1; | |
964 | if (p[0] == '/') { | |
965 | /* if dev:[dir]/, move nm to / */ | |
966 | if (!slash && p > nm && (brack || colon)) { | |
967 | nm = (brack ? brack + 1 : colon + 1); | |
968 | lbrack = rbrack = 0; | |
969 | brack = 0; | |
970 | colon = 0; | |
971 | } | |
972 | slash = p; | |
973 | } | |
974 | if (p[0] == '-') | |
975 | #ifndef VMS4_4 | |
976 | /* VMS pre V4.4,convert '-'s in filenames. */ | |
977 | if (lbrack == rbrack) | |
978 | { | |
5e570b75 | 979 | if (dots < 2) /* this is to allow negative version numbers */ |
570d7624 JB |
980 | p[0] = '_'; |
981 | } | |
982 | else | |
983 | #endif /* VMS4_4 */ | |
984 | if (lbrack > rbrack && | |
985 | ((p[-1] == '.' || p[-1] == '[' || p[-1] == '<') && | |
986 | (p[1] == '.' || p[1] == ']' || p[1] == '>'))) | |
987 | lose = 1; | |
988 | #ifndef VMS4_4 | |
989 | else | |
990 | p[0] = '_'; | |
991 | #endif /* VMS4_4 */ | |
992 | /* count open brackets, reset close bracket pointer */ | |
993 | if (p[0] == '[' || p[0] == '<') | |
994 | lbrack++, brack = 0; | |
995 | /* count close brackets, set close bracket pointer */ | |
996 | if (p[0] == ']' || p[0] == '>') | |
997 | rbrack++, brack = p; | |
998 | /* detect ][ or >< */ | |
999 | if ((p[0] == ']' || p[0] == '>') && (p[1] == '[' || p[1] == '<')) | |
1000 | lose = 1; | |
1001 | if ((p[0] == ':' || p[0] == ']' || p[0] == '>') && p[1] == '~') | |
1002 | nm = p + 1, lose = 1; | |
1003 | if (p[0] == ':' && (colon || slash)) | |
1004 | /* if dev1:[dir]dev2:, move nm to dev2: */ | |
1005 | if (brack) | |
1006 | { | |
1007 | nm = brack + 1; | |
1008 | brack = 0; | |
1009 | } | |
199607e4 | 1010 | /* if /name/dev:, move nm to dev: */ |
570d7624 JB |
1011 | else if (slash) |
1012 | nm = slash + 1; | |
1013 | /* if node::dev:, move colon following dev */ | |
1014 | else if (colon && colon[-1] == ':') | |
1015 | colon = p; | |
1016 | /* if dev1:dev2:, move nm to dev2: */ | |
1017 | else if (colon && colon[-1] != ':') | |
1018 | { | |
1019 | nm = colon + 1; | |
1020 | colon = 0; | |
1021 | } | |
1022 | if (p[0] == ':' && !colon) | |
1023 | { | |
1024 | if (p[1] == ':') | |
1025 | p++; | |
1026 | colon = p; | |
1027 | } | |
1028 | if (lbrack == rbrack) | |
1029 | if (p[0] == ';') | |
1030 | dots = 2; | |
1031 | else if (p[0] == '.') | |
1032 | dots++; | |
1033 | #endif /* VMS */ | |
1034 | p++; | |
1035 | } | |
1036 | if (!lose) | |
1037 | { | |
1038 | #ifdef VMS | |
1039 | if (index (nm, '/')) | |
1040 | return build_string (sys_translate_unix (nm)); | |
1041 | #endif /* VMS */ | |
199607e4 RS |
1042 | #ifdef DOS_NT |
1043 | /* Make sure directories are all separated with / or \ as | |
1044 | desired, but avoid allocation of a new string when not | |
1045 | required. */ | |
1046 | CORRECT_DIR_SEPS (nm); | |
1047 | #ifdef WINDOWSNT | |
1048 | if (IS_DIRECTORY_SEP (nm[1])) | |
1049 | { | |
1050 | if (strcmp (nm, XSTRING (name)->data) != 0) | |
1051 | name = build_string (nm); | |
1052 | } | |
1053 | else | |
1054 | #endif | |
1055 | /* drive must be set, so this is okay */ | |
1056 | if (strcmp (nm - 2, XSTRING (name)->data) != 0) | |
1057 | { | |
1058 | name = make_string (nm - 2, p - nm + 2); | |
f94988a7 | 1059 | XSTRING (name)->data[0] = DRIVE_LETTER (drive); |
199607e4 RS |
1060 | XSTRING (name)->data[1] = ':'; |
1061 | } | |
1062 | return name; | |
1063 | #else /* not DOS_NT */ | |
570d7624 JB |
1064 | if (nm == XSTRING (name)->data) |
1065 | return name; | |
1066 | return build_string (nm); | |
5e570b75 | 1067 | #endif /* not DOS_NT */ |
570d7624 JB |
1068 | } |
1069 | } | |
1070 | ||
199607e4 RS |
1071 | /* At this point, nm might or might not be an absolute file name. We |
1072 | need to expand ~ or ~user if present, otherwise prefix nm with | |
1073 | default_directory if nm is not absolute, and finally collapse /./ | |
1074 | and /foo/../ sequences. | |
1075 | ||
1076 | We set newdir to be the appropriate prefix if one is needed: | |
1077 | - the relevant user directory if nm starts with ~ or ~user | |
1078 | - the specified drive's working dir (DOS/NT only) if nm does not | |
1079 | start with / | |
1080 | - the value of default_directory. | |
1081 | ||
1082 | Note that these prefixes are not guaranteed to be absolute (except | |
1083 | for the working dir of a drive). Therefore, to ensure we always | |
1084 | return an absolute name, if the final prefix is not absolute we | |
1085 | append it to the current working directory. */ | |
570d7624 JB |
1086 | |
1087 | newdir = 0; | |
1088 | ||
1089 | if (nm[0] == '~') /* prefix ~ */ | |
c77d647e | 1090 | { |
5e570b75 | 1091 | if (IS_DIRECTORY_SEP (nm[1]) |
570d7624 | 1092 | #ifdef VMS |
c77d647e | 1093 | || nm[1] == ':' |
5e570b75 | 1094 | #endif /* VMS */ |
c77d647e JB |
1095 | || nm[1] == 0) /* ~ by itself */ |
1096 | { | |
1097 | if (!(newdir = (unsigned char *) egetenv ("HOME"))) | |
1098 | newdir = (unsigned char *) ""; | |
199607e4 | 1099 | nm++; |
5e570b75 | 1100 | #ifdef DOS_NT |
9a1dc3be | 1101 | collapse_newdir = 0; |
4c3c22f3 | 1102 | #endif |
570d7624 | 1103 | #ifdef VMS |
c77d647e | 1104 | nm++; /* Don't leave the slash in nm. */ |
5e570b75 | 1105 | #endif /* VMS */ |
c77d647e JB |
1106 | } |
1107 | else /* ~user/filename */ | |
1108 | { | |
5e570b75 | 1109 | for (p = nm; *p && (!IS_DIRECTORY_SEP (*p) |
570d7624 | 1110 | #ifdef VMS |
c77d647e | 1111 | && *p != ':' |
5e570b75 | 1112 | #endif /* VMS */ |
c77d647e JB |
1113 | ); p++); |
1114 | o = (unsigned char *) alloca (p - nm + 1); | |
1115 | bcopy ((char *) nm, o, p - nm); | |
1116 | o [p - nm] = 0; | |
1117 | ||
1118 | pw = (struct passwd *) getpwnam (o + 1); | |
1119 | if (pw) | |
1120 | { | |
1121 | newdir = (unsigned char *) pw -> pw_dir; | |
570d7624 | 1122 | #ifdef VMS |
c77d647e | 1123 | nm = p + 1; /* skip the terminator */ |
570d7624 | 1124 | #else |
c77d647e | 1125 | nm = p; |
199607e4 | 1126 | #ifdef DOS_NT |
9a1dc3be | 1127 | collapse_newdir = 0; |
199607e4 | 1128 | #endif |
5e570b75 | 1129 | #endif /* VMS */ |
c77d647e | 1130 | } |
e5d77022 | 1131 | |
c77d647e JB |
1132 | /* If we don't find a user of that name, leave the name |
1133 | unchanged; don't move nm forward to p. */ | |
1134 | } | |
1135 | } | |
570d7624 | 1136 | |
5e570b75 | 1137 | #ifdef DOS_NT |
199607e4 RS |
1138 | /* On DOS and Windows, nm is absolute if a drive name was specified; |
1139 | use the drive's current directory as the prefix if needed. */ | |
1140 | if (!newdir && drive) | |
1141 | { | |
1142 | /* Get default directory if needed to make nm absolute. */ | |
1143 | if (!IS_DIRECTORY_SEP (nm[0])) | |
1144 | { | |
1145 | newdir = alloca (MAXPATHLEN + 1); | |
1146 | if (!getdefdir (toupper (drive) - 'A' + 1, newdir)) | |
1147 | newdir = NULL; | |
1148 | } | |
1149 | if (!newdir) | |
1150 | { | |
1151 | /* Either nm starts with /, or drive isn't mounted. */ | |
1152 | newdir = alloca (4); | |
f94988a7 | 1153 | newdir[0] = DRIVE_LETTER (drive); |
199607e4 RS |
1154 | newdir[1] = ':'; |
1155 | newdir[2] = '/'; | |
1156 | newdir[3] = 0; | |
1157 | } | |
1158 | } | |
5e570b75 | 1159 | #endif /* DOS_NT */ |
199607e4 RS |
1160 | |
1161 | /* Finally, if no prefix has been specified and nm is not absolute, | |
1162 | then it must be expanded relative to default_directory. */ | |
1163 | ||
34097368 | 1164 | if (1 |
199607e4 RS |
1165 | #ifndef DOS_NT |
1166 | /* /... alone is not absolute on DOS and Windows. */ | |
34097368 | 1167 | && !IS_DIRECTORY_SEP (nm[0]) |
199607e4 RS |
1168 | #endif |
1169 | #ifdef WINDOWSNT | |
34097368 | 1170 | && !(IS_DIRECTORY_SEP (nm[0]) && IS_DIRECTORY_SEP (nm[1])) |
199607e4 RS |
1171 | #endif |
1172 | #ifdef VMS | |
1173 | && !index (nm, ':') | |
1174 | #endif | |
570d7624 JB |
1175 | && !newdir) |
1176 | { | |
3b7f6e60 | 1177 | newdir = XSTRING (default_directory)->data; |
570d7624 JB |
1178 | } |
1179 | ||
5e570b75 | 1180 | #ifdef DOS_NT |
199607e4 RS |
1181 | if (newdir) |
1182 | { | |
1183 | /* First ensure newdir is an absolute name. */ | |
1184 | if ( | |
1185 | /* Detect MSDOS file names with drive specifiers. */ | |
1186 | ! (IS_DRIVE (newdir[0]) | |
1187 | && IS_DEVICE_SEP (newdir[1]) && IS_DIRECTORY_SEP (newdir[2])) | |
1188 | #ifdef WINDOWSNT | |
1189 | /* Detect Windows file names in UNC format. */ | |
1190 | && ! (IS_DIRECTORY_SEP (newdir[0]) && IS_DIRECTORY_SEP (newdir[1])) | |
1191 | #endif | |
1192 | ) | |
1193 | { | |
1194 | /* Effectively, let newdir be (expand-file-name newdir cwd). | |
1195 | Because of the admonition against calling expand-file-name | |
1196 | when we have pointers into lisp strings, we accomplish this | |
1197 | indirectly by prepending newdir to nm if necessary, and using | |
1198 | cwd (or the wd of newdir's drive) as the new newdir. */ | |
1199 | ||
1200 | if (IS_DRIVE (newdir[0]) && newdir[1] == ':') | |
1201 | { | |
1202 | drive = newdir[0]; | |
1203 | newdir += 2; | |
1204 | } | |
1205 | if (!IS_DIRECTORY_SEP (nm[0])) | |
1206 | { | |
1207 | char * tmp = alloca (strlen (newdir) + strlen (nm) + 2); | |
1208 | file_name_as_directory (tmp, newdir); | |
1209 | strcat (tmp, nm); | |
1210 | nm = tmp; | |
1211 | } | |
1212 | newdir = alloca (MAXPATHLEN + 1); | |
1213 | if (drive) | |
1214 | { | |
1215 | if (!getdefdir (toupper (drive) - 'A' + 1, newdir)) | |
1216 | newdir = "/"; | |
1217 | } | |
1218 | else | |
1219 | getwd (newdir); | |
1220 | } | |
1221 | ||
1222 | /* Strip off drive name from prefix, if present. */ | |
1223 | if (IS_DRIVE (newdir[0]) && newdir[1] == ':') | |
1224 | { | |
1225 | drive = newdir[0]; | |
1226 | newdir += 2; | |
1227 | } | |
1228 | ||
1229 | /* Keep only a prefix from newdir if nm starts with slash | |
1230 | (//server/share for UNC, nothing otherwise). */ | |
9a1dc3be | 1231 | if (IS_DIRECTORY_SEP (nm[0]) && collapse_newdir) |
199607e4 RS |
1232 | { |
1233 | #ifdef WINDOWSNT | |
1234 | if (IS_DIRECTORY_SEP (newdir[0]) && IS_DIRECTORY_SEP (newdir[1])) | |
1235 | { | |
1236 | newdir = strcpy (alloca (strlen (newdir) + 1), newdir); | |
1237 | p = newdir + 2; | |
1238 | while (*p && !IS_DIRECTORY_SEP (*p)) p++; | |
1239 | p++; | |
1240 | while (*p && !IS_DIRECTORY_SEP (*p)) p++; | |
1241 | *p = 0; | |
1242 | } | |
1243 | else | |
1244 | #endif | |
1245 | newdir = ""; | |
1246 | } | |
1247 | } | |
5e570b75 | 1248 | #endif /* DOS_NT */ |
199607e4 RS |
1249 | |
1250 | if (newdir) | |
bfb61299 | 1251 | { |
57676091 RS |
1252 | /* Get rid of any slash at the end of newdir, unless newdir is |
1253 | just // (an incomplete UNC name). */ | |
199607e4 | 1254 | length = strlen (newdir); |
15fc2f8c | 1255 | if (length > 0 && IS_DIRECTORY_SEP (newdir[length - 1]) |
57676091 RS |
1256 | #ifdef WINDOWSNT |
1257 | && !(length == 2 && IS_DIRECTORY_SEP (newdir[0])) | |
1258 | #endif | |
1259 | ) | |
bfb61299 JB |
1260 | { |
1261 | unsigned char *temp = (unsigned char *) alloca (length); | |
1262 | bcopy (newdir, temp, length - 1); | |
1263 | temp[length - 1] = 0; | |
1264 | newdir = temp; | |
1265 | } | |
1266 | tlen = length + 1; | |
1267 | } | |
1268 | else | |
1269 | tlen = 0; | |
570d7624 | 1270 | |
bfb61299 JB |
1271 | /* Now concatenate the directory and name to new space in the stack frame */ |
1272 | tlen += strlen (nm) + 1; | |
5e570b75 | 1273 | #ifdef DOS_NT |
199607e4 | 1274 | /* Add reserved space for drive name. (The Microsoft x86 compiler |
5e570b75 RS |
1275 | produces incorrect code if the following two lines are combined.) */ |
1276 | target = (unsigned char *) alloca (tlen + 2); | |
1277 | target += 2; | |
1278 | #else /* not DOS_NT */ | |
570d7624 | 1279 | target = (unsigned char *) alloca (tlen); |
5e570b75 | 1280 | #endif /* not DOS_NT */ |
570d7624 JB |
1281 | *target = 0; |
1282 | ||
1283 | if (newdir) | |
1284 | { | |
1285 | #ifndef VMS | |
5e570b75 | 1286 | if (nm[0] == 0 || IS_DIRECTORY_SEP (nm[0])) |
570d7624 JB |
1287 | strcpy (target, newdir); |
1288 | else | |
1289 | #endif | |
c77d647e | 1290 | file_name_as_directory (target, newdir); |
570d7624 JB |
1291 | } |
1292 | ||
1293 | strcat (target, nm); | |
1294 | #ifdef VMS | |
1295 | if (index (target, '/')) | |
1296 | strcpy (target, sys_translate_unix (target)); | |
1297 | #endif /* VMS */ | |
1298 | ||
199607e4 RS |
1299 | /* ASSERT (IS_DIRECTORY_SEP (target[0])) if not VMS */ |
1300 | ||
c77d647e | 1301 | /* Now canonicalize by removing /. and /foo/.. if they appear. */ |
570d7624 JB |
1302 | |
1303 | p = target; | |
1304 | o = target; | |
1305 | ||
1306 | while (*p) | |
1307 | { | |
1308 | #ifdef VMS | |
1309 | if (*p != ']' && *p != '>' && *p != '-') | |
1310 | { | |
1311 | if (*p == '\\') | |
1312 | p++; | |
1313 | *o++ = *p++; | |
1314 | } | |
1315 | else if ((p[0] == ']' || p[0] == '>') && p[0] == p[1] + 2) | |
1316 | /* brackets are offset from each other by 2 */ | |
1317 | { | |
1318 | p += 2; | |
1319 | if (*p != '.' && *p != '-' && o[-1] != '.') | |
1320 | /* convert [foo][bar] to [bar] */ | |
1321 | while (o[-1] != '[' && o[-1] != '<') | |
1322 | o--; | |
1323 | else if (*p == '-' && *o != '.') | |
1324 | *--p = '.'; | |
1325 | } | |
1326 | else if (p[0] == '-' && o[-1] == '.' && | |
1327 | (p[1] == '.' || p[1] == ']' || p[1] == '>')) | |
1328 | /* flush .foo.- ; leave - if stopped by '[' or '<' */ | |
1329 | { | |
1330 | do | |
1331 | o--; | |
1332 | while (o[-1] != '.' && o[-1] != '[' && o[-1] != '<'); | |
5e570b75 | 1333 | if (p[1] == '.') /* foo.-.bar ==> bar. */ |
570d7624 JB |
1334 | p += 2; |
1335 | else if (o[-1] == '.') /* '.foo.-]' ==> ']' */ | |
1336 | p++, o--; | |
1337 | /* else [foo.-] ==> [-] */ | |
1338 | } | |
1339 | else | |
1340 | { | |
1341 | #ifndef VMS4_4 | |
1342 | if (*p == '-' && | |
1343 | o[-1] != '[' && o[-1] != '<' && o[-1] != '.' && | |
1344 | p[1] != ']' && p[1] != '>' && p[1] != '.') | |
1345 | *p = '_'; | |
1346 | #endif /* VMS4_4 */ | |
1347 | *o++ = *p++; | |
1348 | } | |
1349 | #else /* not VMS */ | |
5e570b75 RS |
1350 | if (!IS_DIRECTORY_SEP (*p)) |
1351 | { | |
570d7624 JB |
1352 | *o++ = *p++; |
1353 | } | |
c0fa5a0b KH |
1354 | else if (IS_DIRECTORY_SEP (p[0]) && IS_DIRECTORY_SEP (p[1]) |
1355 | #if defined (APOLLO) || defined (WINDOWSNT) | |
199607e4 | 1356 | /* // at start of filename is meaningful in Apollo |
c0fa5a0b | 1357 | and WindowsNT systems */ |
570d7624 | 1358 | && o != target |
199607e4 | 1359 | #endif /* APOLLO || WINDOWSNT */ |
570d7624 JB |
1360 | ) |
1361 | { | |
1362 | o = target; | |
1363 | p++; | |
1364 | } | |
5e570b75 | 1365 | else if (IS_DIRECTORY_SEP (p[0]) |
c77d647e | 1366 | && p[1] == '.' |
5e570b75 | 1367 | && (IS_DIRECTORY_SEP (p[2]) |
c77d647e JB |
1368 | || p[2] == 0)) |
1369 | { | |
1370 | /* If "/." is the entire filename, keep the "/". Otherwise, | |
1371 | just delete the whole "/.". */ | |
1372 | if (o == target && p[2] == '\0') | |
1373 | *o++ = *p; | |
1374 | p += 2; | |
1375 | } | |
c0fa5a0b | 1376 | else if (IS_DIRECTORY_SEP (p[0]) && p[1] == '.' && p[2] == '.' |
570d7624 JB |
1377 | /* `/../' is the "superroot" on certain file systems. */ |
1378 | && o != target | |
5e570b75 | 1379 | && (IS_DIRECTORY_SEP (p[3]) || p[3] == 0)) |
570d7624 | 1380 | { |
5e570b75 | 1381 | while (o != target && (--o) && !IS_DIRECTORY_SEP (*o)) |
570d7624 | 1382 | ; |
795de720 RS |
1383 | /* Keep initial / only if this is the whole name. */ |
1384 | if (o == target && IS_ANY_SEP (*o) && p[3] == 0) | |
51b1d12e | 1385 | ++o; |
570d7624 JB |
1386 | p += 3; |
1387 | } | |
1388 | else | |
5e570b75 | 1389 | { |
570d7624 JB |
1390 | *o++ = *p++; |
1391 | } | |
1392 | #endif /* not VMS */ | |
1393 | } | |
1394 | ||
5e570b75 | 1395 | #ifdef DOS_NT |
199607e4 | 1396 | /* At last, set drive name. */ |
5e570b75 | 1397 | #ifdef WINDOWSNT |
199607e4 RS |
1398 | /* Except for network file name. */ |
1399 | if (!(IS_DIRECTORY_SEP (target[0]) && IS_DIRECTORY_SEP (target[1]))) | |
5e570b75 | 1400 | #endif /* WINDOWSNT */ |
4c3c22f3 | 1401 | { |
199607e4 | 1402 | if (!drive) abort (); |
4c3c22f3 | 1403 | target -= 2; |
f94988a7 | 1404 | target[0] = DRIVE_LETTER (drive); |
4c3c22f3 RS |
1405 | target[1] = ':'; |
1406 | } | |
199607e4 | 1407 | CORRECT_DIR_SEPS (target); |
5e570b75 | 1408 | #endif /* DOS_NT */ |
4c3c22f3 | 1409 | |
570d7624 JB |
1410 | return make_string (target, o - target); |
1411 | } | |
5e570b75 | 1412 | |
570d7624 | 1413 | #if 0 |
5e570b75 | 1414 | /* Changed this DEFUN to a DEAFUN, so as not to confuse `make-docfile'. */ |
e5d77022 | 1415 | DEAFUN ("expand-file-name", Fexpand_file_name, Sexpand_file_name, 1, 2, 0, |
570d7624 JB |
1416 | "Convert FILENAME to absolute, and canonicalize it.\n\ |
1417 | Second arg DEFAULT is directory to start with if FILENAME is relative\n\ | |
1418 | (does not start with slash); if DEFAULT is nil or missing,\n\ | |
1419 | the current buffer's value of default-directory is used.\n\ | |
1420 | Filenames containing `.' or `..' as components are simplified;\n\ | |
1421 | initial `~/' expands to your home directory.\n\ | |
1422 | See also the function `substitute-in-file-name'.") | |
1423 | (name, defalt) | |
1424 | Lisp_Object name, defalt; | |
1425 | { | |
1426 | unsigned char *nm; | |
199607e4 | 1427 | |
570d7624 JB |
1428 | register unsigned char *newdir, *p, *o; |
1429 | int tlen; | |
1430 | unsigned char *target; | |
1431 | struct passwd *pw; | |
1432 | int lose; | |
1433 | #ifdef VMS | |
1434 | unsigned char * colon = 0; | |
1435 | unsigned char * close = 0; | |
1436 | unsigned char * slash = 0; | |
1437 | unsigned char * brack = 0; | |
1438 | int lbrack = 0, rbrack = 0; | |
1439 | int dots = 0; | |
1440 | #endif /* VMS */ | |
199607e4 | 1441 | |
570d7624 JB |
1442 | CHECK_STRING (name, 0); |
1443 | ||
1444 | #ifdef VMS | |
1445 | /* Filenames on VMS are always upper case. */ | |
1446 | name = Fupcase (name); | |
1447 | #endif | |
1448 | ||
1449 | nm = XSTRING (name)->data; | |
199607e4 | 1450 | |
570d7624 JB |
1451 | /* If nm is absolute, flush ...// and detect /./ and /../. |
1452 | If no /./ or /../ we can return right away. */ | |
1453 | if ( | |
1454 | nm[0] == '/' | |
1455 | #ifdef VMS | |
1456 | || index (nm, ':') | |
1457 | #endif /* VMS */ | |
1458 | ) | |
1459 | { | |
1460 | p = nm; | |
1461 | lose = 0; | |
1462 | while (*p) | |
1463 | { | |
1464 | if (p[0] == '/' && p[1] == '/' | |
1465 | #ifdef APOLLO | |
1466 | /* // at start of filename is meaningful on Apollo system */ | |
1467 | && nm != p | |
1468 | #endif /* APOLLO */ | |
1469 | ) | |
1470 | nm = p + 1; | |
1471 | if (p[0] == '/' && p[1] == '~') | |
1472 | nm = p + 1, lose = 1; | |
1473 | if (p[0] == '/' && p[1] == '.' | |
1474 | && (p[2] == '/' || p[2] == 0 | |
1475 | || (p[2] == '.' && (p[3] == '/' || p[3] == 0)))) | |
1476 | lose = 1; | |
1477 | #ifdef VMS | |
1478 | if (p[0] == '\\') | |
1479 | lose = 1; | |
1480 | if (p[0] == '/') { | |
1481 | /* if dev:[dir]/, move nm to / */ | |
1482 | if (!slash && p > nm && (brack || colon)) { | |
1483 | nm = (brack ? brack + 1 : colon + 1); | |
1484 | lbrack = rbrack = 0; | |
1485 | brack = 0; | |
1486 | colon = 0; | |
1487 | } | |
1488 | slash = p; | |
1489 | } | |
1490 | if (p[0] == '-') | |
1491 | #ifndef VMS4_4 | |
1492 | /* VMS pre V4.4,convert '-'s in filenames. */ | |
1493 | if (lbrack == rbrack) | |
1494 | { | |
5e570b75 | 1495 | if (dots < 2) /* this is to allow negative version numbers */ |
570d7624 JB |
1496 | p[0] = '_'; |
1497 | } | |
1498 | else | |
1499 | #endif /* VMS4_4 */ | |
1500 | if (lbrack > rbrack && | |
1501 | ((p[-1] == '.' || p[-1] == '[' || p[-1] == '<') && | |
1502 | (p[1] == '.' || p[1] == ']' || p[1] == '>'))) | |
1503 | lose = 1; | |
1504 | #ifndef VMS4_4 | |
1505 | else | |
1506 | p[0] = '_'; | |
1507 | #endif /* VMS4_4 */ | |
1508 | /* count open brackets, reset close bracket pointer */ | |
1509 | if (p[0] == '[' || p[0] == '<') | |
1510 | lbrack++, brack = 0; | |
1511 | /* count close brackets, set close bracket pointer */ | |
1512 | if (p[0] == ']' || p[0] == '>') | |
1513 | rbrack++, brack = p; | |
1514 | /* detect ][ or >< */ | |
1515 | if ((p[0] == ']' || p[0] == '>') && (p[1] == '[' || p[1] == '<')) | |
1516 | lose = 1; | |
1517 | if ((p[0] == ':' || p[0] == ']' || p[0] == '>') && p[1] == '~') | |
1518 | nm = p + 1, lose = 1; | |
1519 | if (p[0] == ':' && (colon || slash)) | |
1520 | /* if dev1:[dir]dev2:, move nm to dev2: */ | |
1521 | if (brack) | |
1522 | { | |
1523 | nm = brack + 1; | |
1524 | brack = 0; | |
1525 | } | |
199607e4 | 1526 | /* If /name/dev:, move nm to dev: */ |
570d7624 JB |
1527 | else if (slash) |
1528 | nm = slash + 1; | |
199607e4 | 1529 | /* If node::dev:, move colon following dev */ |
570d7624 JB |
1530 | else if (colon && colon[-1] == ':') |
1531 | colon = p; | |
199607e4 | 1532 | /* If dev1:dev2:, move nm to dev2: */ |
570d7624 JB |
1533 | else if (colon && colon[-1] != ':') |
1534 | { | |
1535 | nm = colon + 1; | |
1536 | colon = 0; | |
1537 | } | |
1538 | if (p[0] == ':' && !colon) | |
1539 | { | |
1540 | if (p[1] == ':') | |
1541 | p++; | |
1542 | colon = p; | |
1543 | } | |
1544 | if (lbrack == rbrack) | |
1545 | if (p[0] == ';') | |
1546 | dots = 2; | |
1547 | else if (p[0] == '.') | |
1548 | dots++; | |
1549 | #endif /* VMS */ | |
1550 | p++; | |
1551 | } | |
1552 | if (!lose) | |
1553 | { | |
1554 | #ifdef VMS | |
1555 | if (index (nm, '/')) | |
1556 | return build_string (sys_translate_unix (nm)); | |
1557 | #endif /* VMS */ | |
1558 | if (nm == XSTRING (name)->data) | |
1559 | return name; | |
1560 | return build_string (nm); | |
1561 | } | |
1562 | } | |
1563 | ||
1564 | /* Now determine directory to start with and put it in NEWDIR */ | |
1565 | ||
1566 | newdir = 0; | |
1567 | ||
5e570b75 | 1568 | if (nm[0] == '~') /* prefix ~ */ |
570d7624 JB |
1569 | if (nm[1] == '/' |
1570 | #ifdef VMS | |
1571 | || nm[1] == ':' | |
1572 | #endif /* VMS */ | |
1573 | || nm[1] == 0)/* ~/filename */ | |
1574 | { | |
1575 | if (!(newdir = (unsigned char *) egetenv ("HOME"))) | |
1576 | newdir = (unsigned char *) ""; | |
1577 | nm++; | |
1578 | #ifdef VMS | |
5e570b75 | 1579 | nm++; /* Don't leave the slash in nm. */ |
570d7624 JB |
1580 | #endif /* VMS */ |
1581 | } | |
1582 | else /* ~user/filename */ | |
1583 | { | |
1584 | /* Get past ~ to user */ | |
1585 | unsigned char *user = nm + 1; | |
1586 | /* Find end of name. */ | |
1587 | unsigned char *ptr = (unsigned char *) index (user, '/'); | |
1588 | int len = ptr ? ptr - user : strlen (user); | |
1589 | #ifdef VMS | |
1590 | unsigned char *ptr1 = index (user, ':'); | |
1591 | if (ptr1 != 0 && ptr1 - user < len) | |
1592 | len = ptr1 - user; | |
5e570b75 | 1593 | #endif /* VMS */ |
570d7624 JB |
1594 | /* Copy the user name into temp storage. */ |
1595 | o = (unsigned char *) alloca (len + 1); | |
1596 | bcopy ((char *) user, o, len); | |
1597 | o[len] = 0; | |
1598 | ||
1599 | /* Look up the user name. */ | |
1600 | pw = (struct passwd *) getpwnam (o + 1); | |
1601 | if (!pw) | |
1602 | error ("\"%s\" isn't a registered user", o + 1); | |
1603 | ||
1604 | newdir = (unsigned char *) pw->pw_dir; | |
1605 | ||
1606 | /* Discard the user name from NM. */ | |
1607 | nm += len; | |
1608 | } | |
1609 | ||
1610 | if (nm[0] != '/' | |
1611 | #ifdef VMS | |
1612 | && !index (nm, ':') | |
1613 | #endif /* not VMS */ | |
1614 | && !newdir) | |
1615 | { | |
265a9e55 | 1616 | if (NILP (defalt)) |
570d7624 JB |
1617 | defalt = current_buffer->directory; |
1618 | CHECK_STRING (defalt, 1); | |
1619 | newdir = XSTRING (defalt)->data; | |
1620 | } | |
1621 | ||
1622 | /* Now concatenate the directory and name to new space in the stack frame */ | |
1623 | ||
1624 | tlen = (newdir ? strlen (newdir) + 1 : 0) + strlen (nm) + 1; | |
1625 | target = (unsigned char *) alloca (tlen); | |
1626 | *target = 0; | |
1627 | ||
1628 | if (newdir) | |
1629 | { | |
1630 | #ifndef VMS | |
1631 | if (nm[0] == 0 || nm[0] == '/') | |
1632 | strcpy (target, newdir); | |
1633 | else | |
1634 | #endif | |
1635 | file_name_as_directory (target, newdir); | |
1636 | } | |
1637 | ||
1638 | strcat (target, nm); | |
1639 | #ifdef VMS | |
1640 | if (index (target, '/')) | |
1641 | strcpy (target, sys_translate_unix (target)); | |
1642 | #endif /* VMS */ | |
1643 | ||
1644 | /* Now canonicalize by removing /. and /foo/.. if they appear */ | |
1645 | ||
1646 | p = target; | |
1647 | o = target; | |
1648 | ||
1649 | while (*p) | |
1650 | { | |
1651 | #ifdef VMS | |
1652 | if (*p != ']' && *p != '>' && *p != '-') | |
1653 | { | |
1654 | if (*p == '\\') | |
1655 | p++; | |
1656 | *o++ = *p++; | |
1657 | } | |
1658 | else if ((p[0] == ']' || p[0] == '>') && p[0] == p[1] + 2) | |
1659 | /* brackets are offset from each other by 2 */ | |
1660 | { | |
1661 | p += 2; | |
1662 | if (*p != '.' && *p != '-' && o[-1] != '.') | |
1663 | /* convert [foo][bar] to [bar] */ | |
1664 | while (o[-1] != '[' && o[-1] != '<') | |
1665 | o--; | |
1666 | else if (*p == '-' && *o != '.') | |
1667 | *--p = '.'; | |
1668 | } | |
1669 | else if (p[0] == '-' && o[-1] == '.' && | |
1670 | (p[1] == '.' || p[1] == ']' || p[1] == '>')) | |
1671 | /* flush .foo.- ; leave - if stopped by '[' or '<' */ | |
1672 | { | |
1673 | do | |
1674 | o--; | |
1675 | while (o[-1] != '.' && o[-1] != '[' && o[-1] != '<'); | |
5e570b75 | 1676 | if (p[1] == '.') /* foo.-.bar ==> bar. */ |
570d7624 JB |
1677 | p += 2; |
1678 | else if (o[-1] == '.') /* '.foo.-]' ==> ']' */ | |
1679 | p++, o--; | |
1680 | /* else [foo.-] ==> [-] */ | |
1681 | } | |
1682 | else | |
1683 | { | |
1684 | #ifndef VMS4_4 | |
1685 | if (*p == '-' && | |
1686 | o[-1] != '[' && o[-1] != '<' && o[-1] != '.' && | |
1687 | p[1] != ']' && p[1] != '>' && p[1] != '.') | |
1688 | *p = '_'; | |
1689 | #endif /* VMS4_4 */ | |
1690 | *o++ = *p++; | |
1691 | } | |
1692 | #else /* not VMS */ | |
1693 | if (*p != '/') | |
5e570b75 | 1694 | { |
570d7624 JB |
1695 | *o++ = *p++; |
1696 | } | |
1697 | else if (!strncmp (p, "//", 2) | |
1698 | #ifdef APOLLO | |
1699 | /* // at start of filename is meaningful in Apollo system */ | |
1700 | && o != target | |
1701 | #endif /* APOLLO */ | |
1702 | ) | |
1703 | { | |
1704 | o = target; | |
1705 | p++; | |
1706 | } | |
1707 | else if (p[0] == '/' && p[1] == '.' && | |
1708 | (p[2] == '/' || p[2] == 0)) | |
1709 | p += 2; | |
1710 | else if (!strncmp (p, "/..", 3) | |
1711 | /* `/../' is the "superroot" on certain file systems. */ | |
1712 | && o != target | |
1713 | && (p[3] == '/' || p[3] == 0)) | |
1714 | { | |
1715 | while (o != target && *--o != '/') | |
1716 | ; | |
1717 | #ifdef APOLLO | |
1718 | if (o == target + 1 && o[-1] == '/' && o[0] == '/') | |
1719 | ++o; | |
1720 | else | |
1721 | #endif /* APOLLO */ | |
1722 | if (o == target && *o == '/') | |
1723 | ++o; | |
1724 | p += 3; | |
1725 | } | |
1726 | else | |
5e570b75 | 1727 | { |
570d7624 JB |
1728 | *o++ = *p++; |
1729 | } | |
1730 | #endif /* not VMS */ | |
1731 | } | |
1732 | ||
1733 | return make_string (target, o - target); | |
1734 | } | |
1735 | #endif | |
1736 | \f | |
1737 | DEFUN ("substitute-in-file-name", Fsubstitute_in_file_name, | |
1738 | Ssubstitute_in_file_name, 1, 1, 0, | |
1739 | "Substitute environment variables referred to in FILENAME.\n\ | |
1740 | `$FOO' where FOO is an environment variable name means to substitute\n\ | |
1741 | the value of that variable. The variable name should be terminated\n\ | |
1742 | with a character not a letter, digit or underscore; otherwise, enclose\n\ | |
1743 | the entire variable name in braces.\n\ | |
1744 | If `/~' appears, all of FILENAME through that `/' is discarded.\n\n\ | |
1745 | On VMS, `$' substitution is not done; this function does little and only\n\ | |
1746 | duplicates what `expand-file-name' does.") | |
3b7f6e60 EN |
1747 | (filename) |
1748 | Lisp_Object filename; | |
570d7624 JB |
1749 | { |
1750 | unsigned char *nm; | |
1751 | ||
1752 | register unsigned char *s, *p, *o, *x, *endp; | |
1753 | unsigned char *target; | |
1754 | int total = 0; | |
1755 | int substituted = 0; | |
1756 | unsigned char *xnm; | |
8ce069f5 | 1757 | Lisp_Object handler; |
570d7624 | 1758 | |
3b7f6e60 | 1759 | CHECK_STRING (filename, 0); |
570d7624 | 1760 | |
8ce069f5 RS |
1761 | /* If the file name has special constructs in it, |
1762 | call the corresponding file handler. */ | |
3b7f6e60 | 1763 | handler = Ffind_file_name_handler (filename, Qsubstitute_in_file_name); |
8ce069f5 | 1764 | if (!NILP (handler)) |
3b7f6e60 | 1765 | return call2 (handler, Qsubstitute_in_file_name, filename); |
8ce069f5 | 1766 | |
3b7f6e60 | 1767 | nm = XSTRING (filename)->data; |
199607e4 RS |
1768 | #ifdef DOS_NT |
1769 | nm = strcpy (alloca (strlen (nm) + 1), nm); | |
1770 | CORRECT_DIR_SEPS (nm); | |
1771 | substituted = (strcmp (nm, XSTRING (filename)->data) != 0); | |
a5a1cc06 | 1772 | #endif |
3b7f6e60 | 1773 | endp = nm + XSTRING (filename)->size; |
570d7624 JB |
1774 | |
1775 | /* If /~ or // appears, discard everything through first slash. */ | |
1776 | ||
1777 | for (p = nm; p != endp; p++) | |
1778 | { | |
199607e4 RS |
1779 | if ((p[0] == '~' |
1780 | #if defined (APOLLO) || defined (WINDOWSNT) | |
1781 | /* // at start of file name is meaningful in Apollo and | |
1782 | WindowsNT systems */ | |
1783 | || (IS_DIRECTORY_SEP (p[0]) && p - 1 != nm) | |
1784 | #else /* not (APOLLO || WINDOWSNT) */ | |
1785 | || IS_DIRECTORY_SEP (p[0]) | |
1786 | #endif /* not (APOLLO || WINDOWSNT) */ | |
570d7624 | 1787 | ) |
5e570b75 RS |
1788 | && p != nm |
1789 | && (0 | |
570d7624 | 1790 | #ifdef VMS |
5e570b75 | 1791 | || p[-1] == ':' || p[-1] == ']' || p[-1] == '>' |
570d7624 | 1792 | #endif /* VMS */ |
5e570b75 | 1793 | || IS_DIRECTORY_SEP (p[-1]))) |
570d7624 JB |
1794 | { |
1795 | nm = p; | |
1796 | substituted = 1; | |
1797 | } | |
5e570b75 | 1798 | #ifdef DOS_NT |
199607e4 RS |
1799 | /* see comment in expand-file-name about drive specifiers */ |
1800 | else if (IS_DRIVE (p[0]) && p[1] == ':' | |
1801 | && p > nm && IS_DIRECTORY_SEP (p[-1])) | |
4c3c22f3 RS |
1802 | { |
1803 | nm = p; | |
1804 | substituted = 1; | |
1805 | } | |
5e570b75 | 1806 | #endif /* DOS_NT */ |
570d7624 JB |
1807 | } |
1808 | ||
1809 | #ifdef VMS | |
1810 | return build_string (nm); | |
1811 | #else | |
1812 | ||
1813 | /* See if any variables are substituted into the string | |
1814 | and find the total length of their values in `total' */ | |
1815 | ||
1816 | for (p = nm; p != endp;) | |
1817 | if (*p != '$') | |
1818 | p++; | |
1819 | else | |
1820 | { | |
1821 | p++; | |
1822 | if (p == endp) | |
1823 | goto badsubst; | |
1824 | else if (*p == '$') | |
1825 | { | |
1826 | /* "$$" means a single "$" */ | |
1827 | p++; | |
1828 | total -= 1; | |
1829 | substituted = 1; | |
1830 | continue; | |
1831 | } | |
1832 | else if (*p == '{') | |
1833 | { | |
1834 | o = ++p; | |
1835 | while (p != endp && *p != '}') p++; | |
1836 | if (*p != '}') goto missingclose; | |
1837 | s = p; | |
1838 | } | |
1839 | else | |
1840 | { | |
1841 | o = p; | |
1842 | while (p != endp && (isalnum (*p) || *p == '_')) p++; | |
1843 | s = p; | |
1844 | } | |
1845 | ||
1846 | /* Copy out the variable name */ | |
1847 | target = (unsigned char *) alloca (s - o + 1); | |
1848 | strncpy (target, o, s - o); | |
1849 | target[s - o] = 0; | |
5e570b75 | 1850 | #ifdef DOS_NT |
4c3c22f3 | 1851 | strupr (target); /* $home == $HOME etc. */ |
5e570b75 | 1852 | #endif /* DOS_NT */ |
570d7624 JB |
1853 | |
1854 | /* Get variable value */ | |
1855 | o = (unsigned char *) egetenv (target); | |
570d7624 JB |
1856 | if (!o) goto badvar; |
1857 | total += strlen (o); | |
1858 | substituted = 1; | |
1859 | } | |
1860 | ||
1861 | if (!substituted) | |
3b7f6e60 | 1862 | return filename; |
570d7624 JB |
1863 | |
1864 | /* If substitution required, recopy the string and do it */ | |
1865 | /* Make space in stack frame for the new copy */ | |
3b7f6e60 | 1866 | xnm = (unsigned char *) alloca (XSTRING (filename)->size + total + 1); |
570d7624 JB |
1867 | x = xnm; |
1868 | ||
1869 | /* Copy the rest of the name through, replacing $ constructs with values */ | |
1870 | for (p = nm; *p;) | |
1871 | if (*p != '$') | |
1872 | *x++ = *p++; | |
1873 | else | |
1874 | { | |
1875 | p++; | |
1876 | if (p == endp) | |
1877 | goto badsubst; | |
1878 | else if (*p == '$') | |
1879 | { | |
1880 | *x++ = *p++; | |
1881 | continue; | |
1882 | } | |
1883 | else if (*p == '{') | |
1884 | { | |
1885 | o = ++p; | |
1886 | while (p != endp && *p != '}') p++; | |
1887 | if (*p != '}') goto missingclose; | |
1888 | s = p++; | |
1889 | } | |
1890 | else | |
1891 | { | |
1892 | o = p; | |
1893 | while (p != endp && (isalnum (*p) || *p == '_')) p++; | |
1894 | s = p; | |
1895 | } | |
1896 | ||
1897 | /* Copy out the variable name */ | |
1898 | target = (unsigned char *) alloca (s - o + 1); | |
1899 | strncpy (target, o, s - o); | |
1900 | target[s - o] = 0; | |
5e570b75 | 1901 | #ifdef DOS_NT |
4c3c22f3 | 1902 | strupr (target); /* $home == $HOME etc. */ |
5e570b75 | 1903 | #endif /* DOS_NT */ |
570d7624 JB |
1904 | |
1905 | /* Get variable value */ | |
1906 | o = (unsigned char *) egetenv (target); | |
570d7624 JB |
1907 | if (!o) |
1908 | goto badvar; | |
1909 | ||
1910 | strcpy (x, o); | |
1911 | x += strlen (o); | |
1912 | } | |
1913 | ||
1914 | *x = 0; | |
1915 | ||
1916 | /* If /~ or // appears, discard everything through first slash. */ | |
1917 | ||
1918 | for (p = xnm; p != x; p++) | |
5e570b75 | 1919 | if ((p[0] == '~' |
199607e4 | 1920 | #if defined (APOLLO) || defined (WINDOWSNT) |
5e570b75 | 1921 | || (IS_DIRECTORY_SEP (p[0]) && p - 1 != xnm) |
199607e4 RS |
1922 | #else /* not (APOLLO || WINDOWSNT) */ |
1923 | || IS_DIRECTORY_SEP (p[0]) | |
1924 | #endif /* not (APOLLO || WINDOWSNT) */ | |
570d7624 | 1925 | ) |
ac5b7072 | 1926 | && p != xnm && IS_DIRECTORY_SEP (p[-1])) |
570d7624 | 1927 | xnm = p; |
5e570b75 | 1928 | #ifdef DOS_NT |
199607e4 RS |
1929 | else if (IS_DRIVE (p[0]) && p[1] == ':' |
1930 | && p > nm && IS_DIRECTORY_SEP (p[-1])) | |
1931 | xnm = p; | |
4c3c22f3 | 1932 | #endif |
570d7624 JB |
1933 | |
1934 | return make_string (xnm, x - xnm); | |
1935 | ||
1936 | badsubst: | |
1937 | error ("Bad format environment-variable substitution"); | |
1938 | missingclose: | |
1939 | error ("Missing \"}\" in environment-variable substitution"); | |
1940 | badvar: | |
1941 | error ("Substituting nonexistent environment variable \"%s\"", target); | |
1942 | ||
1943 | /* NOTREACHED */ | |
1944 | #endif /* not VMS */ | |
1945 | } | |
1946 | \f | |
067ffa38 | 1947 | /* A slightly faster and more convenient way to get |
298b760e | 1948 | (directory-file-name (expand-file-name FOO)). */ |
067ffa38 | 1949 | |
570d7624 JB |
1950 | Lisp_Object |
1951 | expand_and_dir_to_file (filename, defdir) | |
1952 | Lisp_Object filename, defdir; | |
1953 | { | |
199607e4 | 1954 | register Lisp_Object absname; |
570d7624 | 1955 | |
199607e4 | 1956 | absname = Fexpand_file_name (filename, defdir); |
570d7624 JB |
1957 | #ifdef VMS |
1958 | { | |
199607e4 | 1959 | register int c = XSTRING (absname)->data[XSTRING (absname)->size - 1]; |
570d7624 | 1960 | if (c == ':' || c == ']' || c == '>') |
199607e4 | 1961 | absname = Fdirectory_file_name (absname); |
570d7624 JB |
1962 | } |
1963 | #else | |
199607e4 | 1964 | /* Remove final slash, if any (unless this is the root dir). |
570d7624 | 1965 | stat behaves differently depending! */ |
199607e4 RS |
1966 | if (XSTRING (absname)->size > 1 |
1967 | && IS_DIRECTORY_SEP (XSTRING (absname)->data[XSTRING (absname)->size - 1]) | |
1968 | && !IS_DEVICE_SEP (XSTRING (absname)->data[XSTRING (absname)->size-2])) | |
ddc61f46 | 1969 | /* We cannot take shortcuts; they might be wrong for magic file names. */ |
199607e4 | 1970 | absname = Fdirectory_file_name (absname); |
570d7624 | 1971 | #endif |
199607e4 | 1972 | return absname; |
570d7624 JB |
1973 | } |
1974 | \f | |
3ed15d97 RS |
1975 | /* Signal an error if the file ABSNAME already exists. |
1976 | If INTERACTIVE is nonzero, ask the user whether to proceed, | |
1977 | and bypass the error if the user says to go ahead. | |
1978 | QUERYSTRING is a name for the action that is being considered | |
1979 | to alter the file. | |
1980 | *STATPTR is used to store the stat information if the file exists. | |
1981 | If the file does not exist, STATPTR->st_mode is set to 0. */ | |
1982 | ||
c4df73f9 | 1983 | void |
3ed15d97 | 1984 | barf_or_query_if_file_exists (absname, querystring, interactive, statptr) |
570d7624 JB |
1985 | Lisp_Object absname; |
1986 | unsigned char *querystring; | |
1987 | int interactive; | |
3ed15d97 | 1988 | struct stat *statptr; |
570d7624 JB |
1989 | { |
1990 | register Lisp_Object tem; | |
4018b5ef | 1991 | struct stat statbuf; |
570d7624 JB |
1992 | struct gcpro gcpro1; |
1993 | ||
4018b5ef RS |
1994 | /* stat is a good way to tell whether the file exists, |
1995 | regardless of what access permissions it has. */ | |
1996 | if (stat (XSTRING (absname)->data, &statbuf) >= 0) | |
570d7624 JB |
1997 | { |
1998 | if (! interactive) | |
1999 | Fsignal (Qfile_already_exists, | |
2000 | Fcons (build_string ("File already exists"), | |
2001 | Fcons (absname, Qnil))); | |
2002 | GCPRO1 (absname); | |
2003 | tem = do_yes_or_no_p (format1 ("File %s already exists; %s anyway? ", | |
2004 | XSTRING (absname)->data, querystring)); | |
2005 | UNGCPRO; | |
265a9e55 | 2006 | if (NILP (tem)) |
570d7624 JB |
2007 | Fsignal (Qfile_already_exists, |
2008 | Fcons (build_string ("File already exists"), | |
2009 | Fcons (absname, Qnil))); | |
3ed15d97 RS |
2010 | if (statptr) |
2011 | *statptr = statbuf; | |
2012 | } | |
2013 | else | |
2014 | { | |
2015 | if (statptr) | |
2016 | statptr->st_mode = 0; | |
570d7624 JB |
2017 | } |
2018 | return; | |
2019 | } | |
2020 | ||
2021 | DEFUN ("copy-file", Fcopy_file, Scopy_file, 2, 4, | |
349a7710 | 2022 | "fCopy file: \nFCopy %s to file: \np\nP", |
570d7624 JB |
2023 | "Copy FILE to NEWNAME. Both args must be strings.\n\ |
2024 | Signals a `file-already-exists' error if file NEWNAME already exists,\n\ | |
2025 | unless a third argument OK-IF-ALREADY-EXISTS is supplied and non-nil.\n\ | |
2026 | A number as third arg means request confirmation if NEWNAME already exists.\n\ | |
2027 | This is what happens in interactive use with M-x.\n\ | |
349a7710 JB |
2028 | Fourth arg KEEP-TIME non-nil means give the new file the same\n\ |
2029 | last-modified time as the old one. (This works on only some systems.)\n\ | |
2030 | A prefix arg makes KEEP-TIME non-nil.") | |
3b7f6e60 EN |
2031 | (file, newname, ok_if_already_exists, keep_date) |
2032 | Lisp_Object file, newname, ok_if_already_exists, keep_date; | |
570d7624 JB |
2033 | { |
2034 | int ifd, ofd, n; | |
2035 | char buf[16 * 1024]; | |
3ed15d97 | 2036 | struct stat st, out_st; |
32f4334d | 2037 | Lisp_Object handler; |
570d7624 | 2038 | struct gcpro gcpro1, gcpro2; |
b5148e85 | 2039 | int count = specpdl_ptr - specpdl; |
f73b0ada | 2040 | int input_file_statable_p; |
570d7624 | 2041 | |
3b7f6e60 EN |
2042 | GCPRO2 (file, newname); |
2043 | CHECK_STRING (file, 0); | |
570d7624 | 2044 | CHECK_STRING (newname, 1); |
3b7f6e60 | 2045 | file = Fexpand_file_name (file, Qnil); |
570d7624 | 2046 | newname = Fexpand_file_name (newname, Qnil); |
32f4334d | 2047 | |
0bf2eed2 | 2048 | /* If the input file name has special constructs in it, |
32f4334d | 2049 | call the corresponding file handler. */ |
3b7f6e60 | 2050 | handler = Ffind_file_name_handler (file, Qcopy_file); |
0bf2eed2 | 2051 | /* Likewise for output file name. */ |
51cf6d37 | 2052 | if (NILP (handler)) |
49307295 | 2053 | handler = Ffind_file_name_handler (newname, Qcopy_file); |
32f4334d | 2054 | if (!NILP (handler)) |
3b7f6e60 | 2055 | RETURN_UNGCPRO (call5 (handler, Qcopy_file, file, newname, |
36712b0a | 2056 | ok_if_already_exists, keep_date)); |
32f4334d | 2057 | |
265a9e55 | 2058 | if (NILP (ok_if_already_exists) |
93c30b5f | 2059 | || INTEGERP (ok_if_already_exists)) |
570d7624 | 2060 | barf_or_query_if_file_exists (newname, "copy to it", |
3ed15d97 RS |
2061 | INTEGERP (ok_if_already_exists), &out_st); |
2062 | else if (stat (XSTRING (newname)->data, &out_st) < 0) | |
2063 | out_st.st_mode = 0; | |
570d7624 | 2064 | |
3b7f6e60 | 2065 | ifd = open (XSTRING (file)->data, O_RDONLY); |
570d7624 | 2066 | if (ifd < 0) |
3b7f6e60 | 2067 | report_file_error ("Opening input file", Fcons (file, Qnil)); |
570d7624 | 2068 | |
b5148e85 RS |
2069 | record_unwind_protect (close_file_unwind, make_number (ifd)); |
2070 | ||
f73b0ada BF |
2071 | /* We can only copy regular files and symbolic links. Other files are not |
2072 | copyable by us. */ | |
2073 | input_file_statable_p = (fstat (ifd, &st) >= 0); | |
2074 | ||
34ead71a | 2075 | #if !defined (MSDOS) || __DJGPP__ > 1 |
3ed15d97 RS |
2076 | if (out_st.st_mode != 0 |
2077 | && st.st_dev == out_st.st_dev && st.st_ino == out_st.st_ino) | |
2078 | { | |
2079 | errno = 0; | |
2080 | report_file_error ("Input and output files are the same", | |
3b7f6e60 | 2081 | Fcons (file, Fcons (newname, Qnil))); |
3ed15d97 RS |
2082 | } |
2083 | #endif | |
2084 | ||
f73b0ada BF |
2085 | #if defined (S_ISREG) && defined (S_ISLNK) |
2086 | if (input_file_statable_p) | |
2087 | { | |
2088 | if (!(S_ISREG (st.st_mode)) && !(S_ISLNK (st.st_mode))) | |
2089 | { | |
2090 | #if defined (EISDIR) | |
2091 | /* Get a better looking error message. */ | |
2092 | errno = EISDIR; | |
2093 | #endif /* EISDIR */ | |
3b7f6e60 | 2094 | report_file_error ("Non-regular file", Fcons (file, Qnil)); |
f73b0ada BF |
2095 | } |
2096 | } | |
2097 | #endif /* S_ISREG && S_ISLNK */ | |
2098 | ||
570d7624 JB |
2099 | #ifdef VMS |
2100 | /* Create the copy file with the same record format as the input file */ | |
2101 | ofd = sys_creat (XSTRING (newname)->data, 0666, ifd); | |
2102 | #else | |
4c3c22f3 RS |
2103 | #ifdef MSDOS |
2104 | /* System's default file type was set to binary by _fmode in emacs.c. */ | |
2105 | ofd = creat (XSTRING (newname)->data, S_IREAD | S_IWRITE); | |
2106 | #else /* not MSDOS */ | |
570d7624 | 2107 | ofd = creat (XSTRING (newname)->data, 0666); |
4c3c22f3 | 2108 | #endif /* not MSDOS */ |
570d7624 JB |
2109 | #endif /* VMS */ |
2110 | if (ofd < 0) | |
3ed15d97 | 2111 | report_file_error ("Opening output file", Fcons (newname, Qnil)); |
b5148e85 RS |
2112 | |
2113 | record_unwind_protect (close_file_unwind, make_number (ofd)); | |
570d7624 | 2114 | |
b5148e85 RS |
2115 | immediate_quit = 1; |
2116 | QUIT; | |
570d7624 JB |
2117 | while ((n = read (ifd, buf, sizeof buf)) > 0) |
2118 | if (write (ofd, buf, n) != n) | |
3ed15d97 | 2119 | report_file_error ("I/O error", Fcons (newname, Qnil)); |
b5148e85 | 2120 | immediate_quit = 0; |
570d7624 | 2121 | |
5acac34e RS |
2122 | /* Closing the output clobbers the file times on some systems. */ |
2123 | if (close (ofd) < 0) | |
2124 | report_file_error ("I/O error", Fcons (newname, Qnil)); | |
2125 | ||
f73b0ada | 2126 | if (input_file_statable_p) |
570d7624 | 2127 | { |
265a9e55 | 2128 | if (!NILP (keep_date)) |
570d7624 | 2129 | { |
de5bf5d3 JB |
2130 | EMACS_TIME atime, mtime; |
2131 | EMACS_SET_SECS_USECS (atime, st.st_atime, 0); | |
2132 | EMACS_SET_SECS_USECS (mtime, st.st_mtime, 0); | |
d6303611 | 2133 | if (set_file_times (XSTRING (newname)->data, atime, mtime)) |
c0b7b21c | 2134 | Fsignal (Qfile_date_error, |
d1b9ed63 | 2135 | Fcons (build_string ("Cannot set file date"), |
3dbcf3f6 | 2136 | Fcons (newname, Qnil))); |
570d7624 | 2137 | } |
2dc3be7e RS |
2138 | #ifndef MSDOS |
2139 | chmod (XSTRING (newname)->data, st.st_mode & 07777); | |
2140 | #else /* MSDOS */ | |
2141 | #if defined (__DJGPP__) && __DJGPP__ > 1 | |
2142 | /* In DJGPP v2.0 and later, fstat usually returns true file mode bits, | |
2143 | and if it can't, it tells so. Otherwise, under MSDOS we usually | |
2144 | get only the READ bit, which will make the copied file read-only, | |
2145 | so it's better not to chmod at all. */ | |
2146 | if ((_djstat_flags & _STFAIL_WRITEBIT) == 0) | |
de5bf5d3 | 2147 | chmod (XSTRING (newname)->data, st.st_mode & 07777); |
2dc3be7e RS |
2148 | #endif /* DJGPP version 2 or newer */ |
2149 | #endif /* MSDOS */ | |
570d7624 JB |
2150 | } |
2151 | ||
5acac34e RS |
2152 | close (ifd); |
2153 | ||
b5148e85 RS |
2154 | /* Discard the unwind protects. */ |
2155 | specpdl_ptr = specpdl + count; | |
2156 | ||
570d7624 JB |
2157 | UNGCPRO; |
2158 | return Qnil; | |
2159 | } | |
385b6cc7 | 2160 | \f |
9bbe01fb | 2161 | DEFUN ("make-directory-internal", Fmake_directory_internal, |
353cfc19 | 2162 | Smake_directory_internal, 1, 1, 0, |
3b7f6e60 EN |
2163 | "Create a new directory named DIRECTORY.") |
2164 | (directory) | |
2165 | Lisp_Object directory; | |
570d7624 JB |
2166 | { |
2167 | unsigned char *dir; | |
32f4334d | 2168 | Lisp_Object handler; |
570d7624 | 2169 | |
3b7f6e60 EN |
2170 | CHECK_STRING (directory, 0); |
2171 | directory = Fexpand_file_name (directory, Qnil); | |
32f4334d | 2172 | |
3b7f6e60 | 2173 | handler = Ffind_file_name_handler (directory, Qmake_directory_internal); |
32f4334d | 2174 | if (!NILP (handler)) |
3b7f6e60 | 2175 | return call2 (handler, Qmake_directory_internal, directory); |
9bbe01fb | 2176 | |
3b7f6e60 | 2177 | dir = XSTRING (directory)->data; |
570d7624 | 2178 | |
5e570b75 RS |
2179 | #ifdef WINDOWSNT |
2180 | if (mkdir (dir) != 0) | |
2181 | #else | |
570d7624 | 2182 | if (mkdir (dir, 0777) != 0) |
5e570b75 | 2183 | #endif |
3b7f6e60 | 2184 | report_file_error ("Creating directory", Flist (1, &directory)); |
570d7624 | 2185 | |
32f4334d | 2186 | return Qnil; |
570d7624 JB |
2187 | } |
2188 | ||
aa734e17 | 2189 | DEFUN ("delete-directory", Fdelete_directory, Sdelete_directory, 1, 1, "FDelete directory: ", |
3b7f6e60 EN |
2190 | "Delete the directory named DIRECTORY.") |
2191 | (directory) | |
2192 | Lisp_Object directory; | |
570d7624 JB |
2193 | { |
2194 | unsigned char *dir; | |
32f4334d | 2195 | Lisp_Object handler; |
570d7624 | 2196 | |
3b7f6e60 EN |
2197 | CHECK_STRING (directory, 0); |
2198 | directory = Fdirectory_file_name (Fexpand_file_name (directory, Qnil)); | |
2199 | dir = XSTRING (directory)->data; | |
570d7624 | 2200 | |
3b7f6e60 | 2201 | handler = Ffind_file_name_handler (directory, Qdelete_directory); |
32f4334d | 2202 | if (!NILP (handler)) |
3b7f6e60 | 2203 | return call2 (handler, Qdelete_directory, directory); |
32f4334d | 2204 | |
570d7624 | 2205 | if (rmdir (dir) != 0) |
3b7f6e60 | 2206 | report_file_error ("Removing directory", Flist (1, &directory)); |
570d7624 JB |
2207 | |
2208 | return Qnil; | |
2209 | } | |
2210 | ||
2211 | DEFUN ("delete-file", Fdelete_file, Sdelete_file, 1, 1, "fDelete file: ", | |
3b7f6e60 | 2212 | "Delete file named FILENAME.\n\ |
570d7624 JB |
2213 | If file has multiple names, it continues to exist with the other names.") |
2214 | (filename) | |
2215 | Lisp_Object filename; | |
2216 | { | |
32f4334d | 2217 | Lisp_Object handler; |
570d7624 JB |
2218 | CHECK_STRING (filename, 0); |
2219 | filename = Fexpand_file_name (filename, Qnil); | |
32f4334d | 2220 | |
49307295 | 2221 | handler = Ffind_file_name_handler (filename, Qdelete_file); |
32f4334d | 2222 | if (!NILP (handler)) |
8a9b0da9 | 2223 | return call2 (handler, Qdelete_file, filename); |
32f4334d | 2224 | |
570d7624 JB |
2225 | if (0 > unlink (XSTRING (filename)->data)) |
2226 | report_file_error ("Removing old name", Flist (1, &filename)); | |
8a9b0da9 | 2227 | return Qnil; |
570d7624 JB |
2228 | } |
2229 | ||
385b6cc7 RS |
2230 | static Lisp_Object |
2231 | internal_delete_file_1 (ignore) | |
2232 | Lisp_Object ignore; | |
2233 | { | |
2234 | return Qt; | |
2235 | } | |
2236 | ||
2237 | /* Delete file FILENAME, returning 1 if successful and 0 if failed. */ | |
2238 | ||
2239 | int | |
2240 | internal_delete_file (filename) | |
2241 | Lisp_Object filename; | |
2242 | { | |
2243 | return NILP (internal_condition_case_1 (Fdelete_file, filename, | |
2244 | Qt, internal_delete_file_1)); | |
2245 | } | |
2246 | \f | |
570d7624 JB |
2247 | DEFUN ("rename-file", Frename_file, Srename_file, 2, 3, |
2248 | "fRename file: \nFRename %s to file: \np", | |
2249 | "Rename FILE as NEWNAME. Both args strings.\n\ | |
2250 | If file has names other than FILE, it continues to have those names.\n\ | |
2251 | Signals a `file-already-exists' error if a file NEWNAME already exists\n\ | |
2252 | unless optional third argument OK-IF-ALREADY-EXISTS is non-nil.\n\ | |
2253 | A number as third arg means request confirmation if NEWNAME already exists.\n\ | |
2254 | This is what happens in interactive use with M-x.") | |
3b7f6e60 EN |
2255 | (file, newname, ok_if_already_exists) |
2256 | Lisp_Object file, newname, ok_if_already_exists; | |
570d7624 JB |
2257 | { |
2258 | #ifdef NO_ARG_ARRAY | |
2259 | Lisp_Object args[2]; | |
2260 | #endif | |
32f4334d | 2261 | Lisp_Object handler; |
570d7624 JB |
2262 | struct gcpro gcpro1, gcpro2; |
2263 | ||
3b7f6e60 EN |
2264 | GCPRO2 (file, newname); |
2265 | CHECK_STRING (file, 0); | |
570d7624 | 2266 | CHECK_STRING (newname, 1); |
3b7f6e60 | 2267 | file = Fexpand_file_name (file, Qnil); |
570d7624 | 2268 | newname = Fexpand_file_name (newname, Qnil); |
32f4334d RS |
2269 | |
2270 | /* If the file name has special constructs in it, | |
2271 | call the corresponding file handler. */ | |
3b7f6e60 | 2272 | handler = Ffind_file_name_handler (file, Qrename_file); |
51cf6d37 | 2273 | if (NILP (handler)) |
49307295 | 2274 | handler = Ffind_file_name_handler (newname, Qrename_file); |
32f4334d | 2275 | if (!NILP (handler)) |
36712b0a | 2276 | RETURN_UNGCPRO (call4 (handler, Qrename_file, |
3b7f6e60 | 2277 | file, newname, ok_if_already_exists)); |
32f4334d | 2278 | |
265a9e55 | 2279 | if (NILP (ok_if_already_exists) |
93c30b5f | 2280 | || INTEGERP (ok_if_already_exists)) |
570d7624 | 2281 | barf_or_query_if_file_exists (newname, "rename to it", |
3ed15d97 | 2282 | INTEGERP (ok_if_already_exists), 0); |
570d7624 | 2283 | #ifndef BSD4_1 |
3b7f6e60 | 2284 | if (0 > rename (XSTRING (file)->data, XSTRING (newname)->data)) |
570d7624 | 2285 | #else |
3b7f6e60 EN |
2286 | if (0 > link (XSTRING (file)->data, XSTRING (newname)->data) |
2287 | || 0 > unlink (XSTRING (file)->data)) | |
570d7624 JB |
2288 | #endif |
2289 | { | |
2290 | if (errno == EXDEV) | |
2291 | { | |
3b7f6e60 | 2292 | Fcopy_file (file, newname, |
d093c3ac RM |
2293 | /* We have already prompted if it was an integer, |
2294 | so don't have copy-file prompt again. */ | |
2295 | NILP (ok_if_already_exists) ? Qnil : Qt, Qt); | |
3b7f6e60 | 2296 | Fdelete_file (file); |
570d7624 JB |
2297 | } |
2298 | else | |
2299 | #ifdef NO_ARG_ARRAY | |
2300 | { | |
3b7f6e60 | 2301 | args[0] = file; |
570d7624 JB |
2302 | args[1] = newname; |
2303 | report_file_error ("Renaming", Flist (2, args)); | |
2304 | } | |
2305 | #else | |
3b7f6e60 | 2306 | report_file_error ("Renaming", Flist (2, &file)); |
570d7624 JB |
2307 | #endif |
2308 | } | |
2309 | UNGCPRO; | |
2310 | return Qnil; | |
2311 | } | |
2312 | ||
2313 | DEFUN ("add-name-to-file", Fadd_name_to_file, Sadd_name_to_file, 2, 3, | |
2314 | "fAdd name to file: \nFName to add to %s: \np", | |
2315 | "Give FILE additional name NEWNAME. Both args strings.\n\ | |
2316 | Signals a `file-already-exists' error if a file NEWNAME already exists\n\ | |
2317 | unless optional third argument OK-IF-ALREADY-EXISTS is non-nil.\n\ | |
2318 | A number as third arg means request confirmation if NEWNAME already exists.\n\ | |
2319 | This is what happens in interactive use with M-x.") | |
3b7f6e60 EN |
2320 | (file, newname, ok_if_already_exists) |
2321 | Lisp_Object file, newname, ok_if_already_exists; | |
570d7624 JB |
2322 | { |
2323 | #ifdef NO_ARG_ARRAY | |
2324 | Lisp_Object args[2]; | |
2325 | #endif | |
32f4334d | 2326 | Lisp_Object handler; |
570d7624 JB |
2327 | struct gcpro gcpro1, gcpro2; |
2328 | ||
3b7f6e60 EN |
2329 | GCPRO2 (file, newname); |
2330 | CHECK_STRING (file, 0); | |
570d7624 | 2331 | CHECK_STRING (newname, 1); |
3b7f6e60 | 2332 | file = Fexpand_file_name (file, Qnil); |
570d7624 | 2333 | newname = Fexpand_file_name (newname, Qnil); |
32f4334d RS |
2334 | |
2335 | /* If the file name has special constructs in it, | |
2336 | call the corresponding file handler. */ | |
3b7f6e60 | 2337 | handler = Ffind_file_name_handler (file, Qadd_name_to_file); |
32f4334d | 2338 | if (!NILP (handler)) |
3b7f6e60 | 2339 | RETURN_UNGCPRO (call4 (handler, Qadd_name_to_file, file, |
36712b0a | 2340 | newname, ok_if_already_exists)); |
32f4334d | 2341 | |
adc6741c RS |
2342 | /* If the new name has special constructs in it, |
2343 | call the corresponding file handler. */ | |
2344 | handler = Ffind_file_name_handler (newname, Qadd_name_to_file); | |
2345 | if (!NILP (handler)) | |
3b7f6e60 | 2346 | RETURN_UNGCPRO (call4 (handler, Qadd_name_to_file, file, |
adc6741c RS |
2347 | newname, ok_if_already_exists)); |
2348 | ||
265a9e55 | 2349 | if (NILP (ok_if_already_exists) |
93c30b5f | 2350 | || INTEGERP (ok_if_already_exists)) |
570d7624 | 2351 | barf_or_query_if_file_exists (newname, "make it a new name", |
3ed15d97 | 2352 | INTEGERP (ok_if_already_exists), 0); |
5e570b75 RS |
2353 | #ifdef WINDOWSNT |
2354 | /* Windows does not support this operation. */ | |
3b7f6e60 | 2355 | report_file_error ("Adding new name", Flist (2, &file)); |
5e570b75 RS |
2356 | #else /* not WINDOWSNT */ |
2357 | ||
570d7624 | 2358 | unlink (XSTRING (newname)->data); |
3b7f6e60 | 2359 | if (0 > link (XSTRING (file)->data, XSTRING (newname)->data)) |
570d7624 JB |
2360 | { |
2361 | #ifdef NO_ARG_ARRAY | |
3b7f6e60 | 2362 | args[0] = file; |
570d7624 JB |
2363 | args[1] = newname; |
2364 | report_file_error ("Adding new name", Flist (2, args)); | |
2365 | #else | |
3b7f6e60 | 2366 | report_file_error ("Adding new name", Flist (2, &file)); |
570d7624 JB |
2367 | #endif |
2368 | } | |
5e570b75 | 2369 | #endif /* not WINDOWSNT */ |
570d7624 JB |
2370 | |
2371 | UNGCPRO; | |
2372 | return Qnil; | |
2373 | } | |
2374 | ||
2375 | #ifdef S_IFLNK | |
2376 | DEFUN ("make-symbolic-link", Fmake_symbolic_link, Smake_symbolic_link, 2, 3, | |
2377 | "FMake symbolic link to file: \nFMake symbolic link to file %s: \np", | |
2378 | "Make a symbolic link to FILENAME, named LINKNAME. Both args strings.\n\ | |
11183104 | 2379 | Signals a `file-already-exists' error if a file LINKNAME already exists\n\ |
570d7624 | 2380 | unless optional third argument OK-IF-ALREADY-EXISTS is non-nil.\n\ |
11183104 | 2381 | A number as third arg means request confirmation if LINKNAME already exists.\n\ |
570d7624 | 2382 | This happens for interactive use with M-x.") |
e5d77022 JB |
2383 | (filename, linkname, ok_if_already_exists) |
2384 | Lisp_Object filename, linkname, ok_if_already_exists; | |
570d7624 JB |
2385 | { |
2386 | #ifdef NO_ARG_ARRAY | |
2387 | Lisp_Object args[2]; | |
2388 | #endif | |
32f4334d | 2389 | Lisp_Object handler; |
570d7624 JB |
2390 | struct gcpro gcpro1, gcpro2; |
2391 | ||
e5d77022 | 2392 | GCPRO2 (filename, linkname); |
570d7624 | 2393 | CHECK_STRING (filename, 0); |
e5d77022 | 2394 | CHECK_STRING (linkname, 1); |
d9bc1c99 RS |
2395 | /* If the link target has a ~, we must expand it to get |
2396 | a truly valid file name. Otherwise, do not expand; | |
2397 | we want to permit links to relative file names. */ | |
2398 | if (XSTRING (filename)->data[0] == '~') | |
2399 | filename = Fexpand_file_name (filename, Qnil); | |
e5d77022 | 2400 | linkname = Fexpand_file_name (linkname, Qnil); |
32f4334d RS |
2401 | |
2402 | /* If the file name has special constructs in it, | |
2403 | call the corresponding file handler. */ | |
49307295 | 2404 | handler = Ffind_file_name_handler (filename, Qmake_symbolic_link); |
32f4334d | 2405 | if (!NILP (handler)) |
36712b0a KH |
2406 | RETURN_UNGCPRO (call4 (handler, Qmake_symbolic_link, filename, |
2407 | linkname, ok_if_already_exists)); | |
32f4334d | 2408 | |
adc6741c RS |
2409 | /* If the new link name has special constructs in it, |
2410 | call the corresponding file handler. */ | |
2411 | handler = Ffind_file_name_handler (linkname, Qmake_symbolic_link); | |
2412 | if (!NILP (handler)) | |
2413 | RETURN_UNGCPRO (call4 (handler, Qmake_symbolic_link, filename, | |
2414 | linkname, ok_if_already_exists)); | |
2415 | ||
265a9e55 | 2416 | if (NILP (ok_if_already_exists) |
93c30b5f | 2417 | || INTEGERP (ok_if_already_exists)) |
e5d77022 | 2418 | barf_or_query_if_file_exists (linkname, "make it a link", |
3ed15d97 | 2419 | INTEGERP (ok_if_already_exists), 0); |
e5d77022 | 2420 | if (0 > symlink (XSTRING (filename)->data, XSTRING (linkname)->data)) |
570d7624 JB |
2421 | { |
2422 | /* If we didn't complain already, silently delete existing file. */ | |
2423 | if (errno == EEXIST) | |
2424 | { | |
9083124b | 2425 | unlink (XSTRING (linkname)->data); |
e5d77022 | 2426 | if (0 <= symlink (XSTRING (filename)->data, XSTRING (linkname)->data)) |
1a04498e KH |
2427 | { |
2428 | UNGCPRO; | |
2429 | return Qnil; | |
2430 | } | |
570d7624 JB |
2431 | } |
2432 | ||
2433 | #ifdef NO_ARG_ARRAY | |
2434 | args[0] = filename; | |
e5d77022 | 2435 | args[1] = linkname; |
570d7624 JB |
2436 | report_file_error ("Making symbolic link", Flist (2, args)); |
2437 | #else | |
2438 | report_file_error ("Making symbolic link", Flist (2, &filename)); | |
2439 | #endif | |
2440 | } | |
2441 | UNGCPRO; | |
2442 | return Qnil; | |
2443 | } | |
2444 | #endif /* S_IFLNK */ | |
2445 | ||
2446 | #ifdef VMS | |
2447 | ||
2448 | DEFUN ("define-logical-name", Fdefine_logical_name, Sdefine_logical_name, | |
2449 | 2, 2, "sDefine logical name: \nsDefine logical name %s as: ", | |
2450 | "Define the job-wide logical name NAME to have the value STRING.\n\ | |
2451 | If STRING is nil or a null string, the logical name NAME is deleted.") | |
3b7f6e60 EN |
2452 | (name, string) |
2453 | Lisp_Object name; | |
570d7624 JB |
2454 | Lisp_Object string; |
2455 | { | |
3b7f6e60 | 2456 | CHECK_STRING (name, 0); |
265a9e55 | 2457 | if (NILP (string)) |
3b7f6e60 | 2458 | delete_logical_name (XSTRING (name)->data); |
570d7624 JB |
2459 | else |
2460 | { | |
2461 | CHECK_STRING (string, 1); | |
2462 | ||
2463 | if (XSTRING (string)->size == 0) | |
3b7f6e60 | 2464 | delete_logical_name (XSTRING (name)->data); |
570d7624 | 2465 | else |
3b7f6e60 | 2466 | define_logical_name (XSTRING (name)->data, XSTRING (string)->data); |
570d7624 JB |
2467 | } |
2468 | ||
2469 | return string; | |
2470 | } | |
2471 | #endif /* VMS */ | |
2472 | ||
2473 | #ifdef HPUX_NET | |
2474 | ||
2475 | DEFUN ("sysnetunam", Fsysnetunam, Ssysnetunam, 2, 2, 0, | |
2476 | "Open a network connection to PATH using LOGIN as the login string.") | |
2477 | (path, login) | |
2478 | Lisp_Object path, login; | |
2479 | { | |
2480 | int netresult; | |
199607e4 | 2481 | |
570d7624 | 2482 | CHECK_STRING (path, 0); |
199607e4 RS |
2483 | CHECK_STRING (login, 0); |
2484 | ||
570d7624 JB |
2485 | netresult = netunam (XSTRING (path)->data, XSTRING (login)->data); |
2486 | ||
2487 | if (netresult == -1) | |
2488 | return Qnil; | |
2489 | else | |
2490 | return Qt; | |
2491 | } | |
2492 | #endif /* HPUX_NET */ | |
2493 | \f | |
2494 | DEFUN ("file-name-absolute-p", Ffile_name_absolute_p, Sfile_name_absolute_p, | |
2495 | 1, 1, 0, | |
199607e4 | 2496 | "Return t if file FILENAME specifies an absolute file name.\n\ |
570d7624 JB |
2497 | On Unix, this is a name starting with a `/' or a `~'.") |
2498 | (filename) | |
2499 | Lisp_Object filename; | |
2500 | { | |
2501 | unsigned char *ptr; | |
2502 | ||
2503 | CHECK_STRING (filename, 0); | |
2504 | ptr = XSTRING (filename)->data; | |
5e570b75 | 2505 | if (IS_DIRECTORY_SEP (*ptr) || *ptr == '~' |
570d7624 JB |
2506 | #ifdef VMS |
2507 | /* ??? This criterion is probably wrong for '<'. */ | |
2508 | || index (ptr, ':') || index (ptr, '<') | |
2509 | || (*ptr == '[' && (ptr[1] != '-' || (ptr[2] != '.' && ptr[2] != ']')) | |
2510 | && ptr[1] != '.') | |
2511 | #endif /* VMS */ | |
5e570b75 | 2512 | #ifdef DOS_NT |
199607e4 | 2513 | || (IS_DRIVE (*ptr) && ptr[1] == ':' && IS_DIRECTORY_SEP (ptr[2])) |
4c3c22f3 | 2514 | #endif |
570d7624 JB |
2515 | ) |
2516 | return Qt; | |
2517 | else | |
2518 | return Qnil; | |
2519 | } | |
3beeedfe RS |
2520 | \f |
2521 | /* Return nonzero if file FILENAME exists and can be executed. */ | |
2522 | ||
2523 | static int | |
2524 | check_executable (filename) | |
2525 | char *filename; | |
2526 | { | |
3be3c08e RS |
2527 | #ifdef DOS_NT |
2528 | int len = strlen (filename); | |
2529 | char *suffix; | |
2530 | struct stat st; | |
2531 | if (stat (filename, &st) < 0) | |
2532 | return 0; | |
34ead71a | 2533 | #if defined (WINDOWSNT) || (defined (MSDOS) && __DJGPP__ > 1) |
199607e4 RS |
2534 | return ((st.st_mode & S_IEXEC) != 0); |
2535 | #else | |
3be3c08e RS |
2536 | return (S_ISREG (st.st_mode) |
2537 | && len >= 5 | |
2538 | && (stricmp ((suffix = filename + len-4), ".com") == 0 | |
2539 | || stricmp (suffix, ".exe") == 0 | |
2dc3be7e RS |
2540 | || stricmp (suffix, ".bat") == 0) |
2541 | || (st.st_mode & S_IFMT) == S_IFDIR); | |
199607e4 | 2542 | #endif /* not WINDOWSNT */ |
3be3c08e | 2543 | #else /* not DOS_NT */ |
de0be7dd RS |
2544 | #ifdef HAVE_EUIDACCESS |
2545 | return (euidaccess (filename, 1) >= 0); | |
3beeedfe RS |
2546 | #else |
2547 | /* Access isn't quite right because it uses the real uid | |
2548 | and we really want to test with the effective uid. | |
2549 | But Unix doesn't give us a right way to do it. */ | |
2550 | return (access (filename, 1) >= 0); | |
2551 | #endif | |
3be3c08e | 2552 | #endif /* not DOS_NT */ |
3beeedfe RS |
2553 | } |
2554 | ||
2555 | /* Return nonzero if file FILENAME exists and can be written. */ | |
2556 | ||
2557 | static int | |
2558 | check_writable (filename) | |
2559 | char *filename; | |
2560 | { | |
3be3c08e RS |
2561 | #ifdef MSDOS |
2562 | struct stat st; | |
2563 | if (stat (filename, &st) < 0) | |
2564 | return 0; | |
2565 | return (st.st_mode & S_IWRITE || (st.st_mode & S_IFMT) == S_IFDIR); | |
2566 | #else /* not MSDOS */ | |
41f3fb38 KH |
2567 | #ifdef HAVE_EUIDACCESS |
2568 | return (euidaccess (filename, 2) >= 0); | |
3beeedfe RS |
2569 | #else |
2570 | /* Access isn't quite right because it uses the real uid | |
2571 | and we really want to test with the effective uid. | |
2572 | But Unix doesn't give us a right way to do it. | |
2573 | Opening with O_WRONLY could work for an ordinary file, | |
2574 | but would lose for directories. */ | |
2575 | return (access (filename, 2) >= 0); | |
2576 | #endif | |
3be3c08e | 2577 | #endif /* not MSDOS */ |
3beeedfe | 2578 | } |
570d7624 JB |
2579 | |
2580 | DEFUN ("file-exists-p", Ffile_exists_p, Sfile_exists_p, 1, 1, 0, | |
2581 | "Return t if file FILENAME exists. (This does not mean you can read it.)\n\ | |
2582 | See also `file-readable-p' and `file-attributes'.") | |
2583 | (filename) | |
2584 | Lisp_Object filename; | |
2585 | { | |
199607e4 | 2586 | Lisp_Object absname; |
32f4334d | 2587 | Lisp_Object handler; |
4018b5ef | 2588 | struct stat statbuf; |
570d7624 JB |
2589 | |
2590 | CHECK_STRING (filename, 0); | |
199607e4 | 2591 | absname = Fexpand_file_name (filename, Qnil); |
32f4334d RS |
2592 | |
2593 | /* If the file name has special constructs in it, | |
2594 | call the corresponding file handler. */ | |
199607e4 | 2595 | handler = Ffind_file_name_handler (absname, Qfile_exists_p); |
32f4334d | 2596 | if (!NILP (handler)) |
199607e4 | 2597 | return call2 (handler, Qfile_exists_p, absname); |
32f4334d | 2598 | |
199607e4 | 2599 | return (stat (XSTRING (absname)->data, &statbuf) >= 0) ? Qt : Qnil; |
570d7624 JB |
2600 | } |
2601 | ||
2602 | DEFUN ("file-executable-p", Ffile_executable_p, Sfile_executable_p, 1, 1, 0, | |
2603 | "Return t if FILENAME can be executed by you.\n\ | |
8b235fde | 2604 | For a directory, this means you can access files in that directory.") |
570d7624 JB |
2605 | (filename) |
2606 | Lisp_Object filename; | |
2607 | ||
2608 | { | |
199607e4 | 2609 | Lisp_Object absname; |
32f4334d | 2610 | Lisp_Object handler; |
570d7624 JB |
2611 | |
2612 | CHECK_STRING (filename, 0); | |
199607e4 | 2613 | absname = Fexpand_file_name (filename, Qnil); |
32f4334d RS |
2614 | |
2615 | /* If the file name has special constructs in it, | |
2616 | call the corresponding file handler. */ | |
199607e4 | 2617 | handler = Ffind_file_name_handler (absname, Qfile_executable_p); |
32f4334d | 2618 | if (!NILP (handler)) |
199607e4 | 2619 | return call2 (handler, Qfile_executable_p, absname); |
32f4334d | 2620 | |
199607e4 | 2621 | return (check_executable (XSTRING (absname)->data) ? Qt : Qnil); |
570d7624 JB |
2622 | } |
2623 | ||
2624 | DEFUN ("file-readable-p", Ffile_readable_p, Sfile_readable_p, 1, 1, 0, | |
2625 | "Return t if file FILENAME exists and you can read it.\n\ | |
2626 | See also `file-exists-p' and `file-attributes'.") | |
2627 | (filename) | |
2628 | Lisp_Object filename; | |
2629 | { | |
199607e4 | 2630 | Lisp_Object absname; |
32f4334d | 2631 | Lisp_Object handler; |
4018b5ef | 2632 | int desc; |
bb369dc6 RS |
2633 | int flags; |
2634 | struct stat statbuf; | |
570d7624 JB |
2635 | |
2636 | CHECK_STRING (filename, 0); | |
199607e4 | 2637 | absname = Fexpand_file_name (filename, Qnil); |
32f4334d RS |
2638 | |
2639 | /* If the file name has special constructs in it, | |
2640 | call the corresponding file handler. */ | |
199607e4 | 2641 | handler = Ffind_file_name_handler (absname, Qfile_readable_p); |
32f4334d | 2642 | if (!NILP (handler)) |
199607e4 | 2643 | return call2 (handler, Qfile_readable_p, absname); |
32f4334d | 2644 | |
199607e4 RS |
2645 | #ifdef DOS_NT |
2646 | /* Under MS-DOS and Windows, open does not work for directories. */ | |
2647 | if (access (XSTRING (absname)->data, 0) == 0) | |
a8a7d065 RS |
2648 | return Qt; |
2649 | return Qnil; | |
199607e4 | 2650 | #else /* not DOS_NT */ |
bb369dc6 RS |
2651 | flags = O_RDONLY; |
2652 | #if defined (S_ISFIFO) && defined (O_NONBLOCK) | |
2653 | /* Opening a fifo without O_NONBLOCK can wait. | |
2654 | We don't want to wait. But we don't want to mess wth O_NONBLOCK | |
2655 | except in the case of a fifo, on a system which handles it. */ | |
2656 | desc = stat (XSTRING (absname)->data, &statbuf); | |
2657 | if (desc < 0) | |
2658 | return Qnil; | |
2659 | if (S_ISFIFO (statbuf.st_mode)) | |
2660 | flags |= O_NONBLOCK; | |
2661 | #endif | |
2662 | desc = open (XSTRING (absname)->data, flags); | |
4018b5ef RS |
2663 | if (desc < 0) |
2664 | return Qnil; | |
2665 | close (desc); | |
2666 | return Qt; | |
199607e4 | 2667 | #endif /* not DOS_NT */ |
570d7624 JB |
2668 | } |
2669 | ||
f793dc6c RS |
2670 | /* Having this before file-symlink-p mysteriously caused it to be forgotten |
2671 | on the RT/PC. */ | |
2672 | DEFUN ("file-writable-p", Ffile_writable_p, Sfile_writable_p, 1, 1, 0, | |
2673 | "Return t if file FILENAME can be written or created by you.") | |
2674 | (filename) | |
2675 | Lisp_Object filename; | |
2676 | { | |
199607e4 | 2677 | Lisp_Object absname, dir; |
f793dc6c RS |
2678 | Lisp_Object handler; |
2679 | struct stat statbuf; | |
2680 | ||
2681 | CHECK_STRING (filename, 0); | |
199607e4 | 2682 | absname = Fexpand_file_name (filename, Qnil); |
f793dc6c RS |
2683 | |
2684 | /* If the file name has special constructs in it, | |
2685 | call the corresponding file handler. */ | |
199607e4 | 2686 | handler = Ffind_file_name_handler (absname, Qfile_writable_p); |
f793dc6c | 2687 | if (!NILP (handler)) |
199607e4 | 2688 | return call2 (handler, Qfile_writable_p, absname); |
f793dc6c | 2689 | |
199607e4 RS |
2690 | if (stat (XSTRING (absname)->data, &statbuf) >= 0) |
2691 | return (check_writable (XSTRING (absname)->data) | |
f793dc6c | 2692 | ? Qt : Qnil); |
199607e4 | 2693 | dir = Ffile_name_directory (absname); |
f793dc6c RS |
2694 | #ifdef VMS |
2695 | if (!NILP (dir)) | |
2696 | dir = Fdirectory_file_name (dir); | |
2697 | #endif /* VMS */ | |
2698 | #ifdef MSDOS | |
2699 | if (!NILP (dir)) | |
2700 | dir = Fdirectory_file_name (dir); | |
2701 | #endif /* MSDOS */ | |
2702 | return (check_writable (!NILP (dir) ? (char *) XSTRING (dir)->data : "") | |
2703 | ? Qt : Qnil); | |
2704 | } | |
2705 | \f | |
1f8653eb RS |
2706 | DEFUN ("access-file", Faccess_file, Saccess_file, 2, 2, 0, |
2707 | "Access file FILENAME, and get an error if that does not work.\n\ | |
2708 | The second argument STRING is used in the error message.\n\ | |
2709 | If there is no error, we return nil.") | |
2710 | (filename, string) | |
2711 | Lisp_Object filename, string; | |
2712 | { | |
2713 | Lisp_Object handler; | |
2714 | int fd; | |
2715 | ||
2716 | CHECK_STRING (filename, 0); | |
2717 | ||
2718 | /* If the file name has special constructs in it, | |
2719 | call the corresponding file handler. */ | |
2720 | handler = Ffind_file_name_handler (filename, Qaccess_file); | |
2721 | if (!NILP (handler)) | |
2722 | return call3 (handler, Qaccess_file, filename, string); | |
2723 | ||
2724 | fd = open (XSTRING (filename)->data, O_RDONLY); | |
2725 | if (fd < 0) | |
2726 | report_file_error (XSTRING (string)->data, Fcons (filename, Qnil)); | |
2727 | close (fd); | |
2728 | ||
2729 | return Qnil; | |
2730 | } | |
2731 | \f | |
570d7624 | 2732 | DEFUN ("file-symlink-p", Ffile_symlink_p, Sfile_symlink_p, 1, 1, 0, |
89de89c7 RS |
2733 | "Return non-nil if file FILENAME is the name of a symbolic link.\n\ |
2734 | The value is the name of the file to which it is linked.\n\ | |
2735 | Otherwise returns nil.") | |
570d7624 JB |
2736 | (filename) |
2737 | Lisp_Object filename; | |
2738 | { | |
2739 | #ifdef S_IFLNK | |
2740 | char *buf; | |
2741 | int bufsize; | |
2742 | int valsize; | |
2743 | Lisp_Object val; | |
32f4334d | 2744 | Lisp_Object handler; |
570d7624 JB |
2745 | |
2746 | CHECK_STRING (filename, 0); | |
2747 | filename = Fexpand_file_name (filename, Qnil); | |
2748 | ||
32f4334d RS |
2749 | /* If the file name has special constructs in it, |
2750 | call the corresponding file handler. */ | |
49307295 | 2751 | handler = Ffind_file_name_handler (filename, Qfile_symlink_p); |
32f4334d RS |
2752 | if (!NILP (handler)) |
2753 | return call2 (handler, Qfile_symlink_p, filename); | |
2754 | ||
570d7624 JB |
2755 | bufsize = 100; |
2756 | while (1) | |
2757 | { | |
2758 | buf = (char *) xmalloc (bufsize); | |
2759 | bzero (buf, bufsize); | |
2760 | valsize = readlink (XSTRING (filename)->data, buf, bufsize); | |
2761 | if (valsize < bufsize) break; | |
2762 | /* Buffer was not long enough */ | |
9ac0d9e0 | 2763 | xfree (buf); |
570d7624 JB |
2764 | bufsize *= 2; |
2765 | } | |
2766 | if (valsize == -1) | |
2767 | { | |
9ac0d9e0 | 2768 | xfree (buf); |
570d7624 JB |
2769 | return Qnil; |
2770 | } | |
2771 | val = make_string (buf, valsize); | |
9ac0d9e0 | 2772 | xfree (buf); |
570d7624 JB |
2773 | return val; |
2774 | #else /* not S_IFLNK */ | |
2775 | return Qnil; | |
2776 | #endif /* not S_IFLNK */ | |
2777 | } | |
2778 | ||
570d7624 | 2779 | DEFUN ("file-directory-p", Ffile_directory_p, Sfile_directory_p, 1, 1, 0, |
53520519 | 2780 | "Return t if FILENAME names an existing directory.") |
570d7624 JB |
2781 | (filename) |
2782 | Lisp_Object filename; | |
2783 | { | |
199607e4 | 2784 | register Lisp_Object absname; |
570d7624 | 2785 | struct stat st; |
32f4334d | 2786 | Lisp_Object handler; |
570d7624 | 2787 | |
199607e4 | 2788 | absname = expand_and_dir_to_file (filename, current_buffer->directory); |
570d7624 | 2789 | |
32f4334d RS |
2790 | /* If the file name has special constructs in it, |
2791 | call the corresponding file handler. */ | |
199607e4 | 2792 | handler = Ffind_file_name_handler (absname, Qfile_directory_p); |
32f4334d | 2793 | if (!NILP (handler)) |
199607e4 | 2794 | return call2 (handler, Qfile_directory_p, absname); |
32f4334d | 2795 | |
199607e4 | 2796 | if (stat (XSTRING (absname)->data, &st) < 0) |
570d7624 JB |
2797 | return Qnil; |
2798 | return (st.st_mode & S_IFMT) == S_IFDIR ? Qt : Qnil; | |
2799 | } | |
2800 | ||
b72dea2a JB |
2801 | DEFUN ("file-accessible-directory-p", Ffile_accessible_directory_p, Sfile_accessible_directory_p, 1, 1, 0, |
2802 | "Return t if file FILENAME is the name of a directory as a file,\n\ | |
2803 | and files in that directory can be opened by you. In order to use a\n\ | |
2804 | directory as a buffer's current directory, this predicate must return true.\n\ | |
2805 | A directory name spec may be given instead; then the value is t\n\ | |
2806 | if the directory so specified exists and really is a readable and\n\ | |
2807 | searchable directory.") | |
2808 | (filename) | |
2809 | Lisp_Object filename; | |
2810 | { | |
32f4334d | 2811 | Lisp_Object handler; |
1a04498e | 2812 | int tem; |
d26859eb | 2813 | struct gcpro gcpro1; |
32f4334d RS |
2814 | |
2815 | /* If the file name has special constructs in it, | |
2816 | call the corresponding file handler. */ | |
49307295 | 2817 | handler = Ffind_file_name_handler (filename, Qfile_accessible_directory_p); |
32f4334d RS |
2818 | if (!NILP (handler)) |
2819 | return call2 (handler, Qfile_accessible_directory_p, filename); | |
2820 | ||
d26859eb KH |
2821 | /* It's an unlikely combination, but yes we really do need to gcpro: |
2822 | Suppose that file-accessible-directory-p has no handler, but | |
2823 | file-directory-p does have a handler; this handler causes a GC which | |
2824 | relocates the string in `filename'; and finally file-directory-p | |
2825 | returns non-nil. Then we would end up passing a garbaged string | |
2826 | to file-executable-p. */ | |
2827 | GCPRO1 (filename); | |
1a04498e KH |
2828 | tem = (NILP (Ffile_directory_p (filename)) |
2829 | || NILP (Ffile_executable_p (filename))); | |
d26859eb | 2830 | UNGCPRO; |
1a04498e | 2831 | return tem ? Qnil : Qt; |
b72dea2a JB |
2832 | } |
2833 | ||
f793dc6c RS |
2834 | DEFUN ("file-regular-p", Ffile_regular_p, Sfile_regular_p, 1, 1, 0, |
2835 | "Return t if file FILENAME is the name of a regular file.\n\ | |
2836 | This is the sort of file that holds an ordinary stream of data bytes.") | |
2837 | (filename) | |
2838 | Lisp_Object filename; | |
2839 | { | |
199607e4 | 2840 | register Lisp_Object absname; |
f793dc6c RS |
2841 | struct stat st; |
2842 | Lisp_Object handler; | |
2843 | ||
199607e4 | 2844 | absname = expand_and_dir_to_file (filename, current_buffer->directory); |
f793dc6c RS |
2845 | |
2846 | /* If the file name has special constructs in it, | |
2847 | call the corresponding file handler. */ | |
199607e4 | 2848 | handler = Ffind_file_name_handler (absname, Qfile_regular_p); |
f793dc6c | 2849 | if (!NILP (handler)) |
199607e4 | 2850 | return call2 (handler, Qfile_regular_p, absname); |
f793dc6c | 2851 | |
199607e4 | 2852 | if (stat (XSTRING (absname)->data, &st) < 0) |
f793dc6c RS |
2853 | return Qnil; |
2854 | return (st.st_mode & S_IFMT) == S_IFREG ? Qt : Qnil; | |
2855 | } | |
2856 | \f | |
570d7624 | 2857 | DEFUN ("file-modes", Ffile_modes, Sfile_modes, 1, 1, 0, |
3b7f6e60 | 2858 | "Return mode bits of file named FILENAME, as an integer.") |
570d7624 JB |
2859 | (filename) |
2860 | Lisp_Object filename; | |
2861 | { | |
199607e4 | 2862 | Lisp_Object absname; |
570d7624 | 2863 | struct stat st; |
32f4334d | 2864 | Lisp_Object handler; |
570d7624 | 2865 | |
199607e4 | 2866 | absname = expand_and_dir_to_file (filename, current_buffer->directory); |
570d7624 | 2867 | |
32f4334d RS |
2868 | /* If the file name has special constructs in it, |
2869 | call the corresponding file handler. */ | |
199607e4 | 2870 | handler = Ffind_file_name_handler (absname, Qfile_modes); |
32f4334d | 2871 | if (!NILP (handler)) |
199607e4 | 2872 | return call2 (handler, Qfile_modes, absname); |
32f4334d | 2873 | |
199607e4 | 2874 | if (stat (XSTRING (absname)->data, &st) < 0) |
570d7624 | 2875 | return Qnil; |
34ead71a | 2876 | #if defined (MSDOS) && __DJGPP__ < 2 |
199607e4 | 2877 | if (check_executable (XSTRING (absname)->data)) |
3be3c08e | 2878 | st.st_mode |= S_IEXEC; |
34ead71a | 2879 | #endif /* MSDOS && __DJGPP__ < 2 */ |
3ace87e3 | 2880 | |
570d7624 JB |
2881 | return make_number (st.st_mode & 07777); |
2882 | } | |
2883 | ||
2884 | DEFUN ("set-file-modes", Fset_file_modes, Sset_file_modes, 2, 2, 0, | |
3b7f6e60 | 2885 | "Set mode bits of file named FILENAME to MODE (an integer).\n\ |
570d7624 JB |
2886 | Only the 12 low bits of MODE are used.") |
2887 | (filename, mode) | |
2888 | Lisp_Object filename, mode; | |
2889 | { | |
199607e4 | 2890 | Lisp_Object absname; |
32f4334d | 2891 | Lisp_Object handler; |
570d7624 | 2892 | |
199607e4 | 2893 | absname = Fexpand_file_name (filename, current_buffer->directory); |
570d7624 JB |
2894 | CHECK_NUMBER (mode, 1); |
2895 | ||
32f4334d RS |
2896 | /* If the file name has special constructs in it, |
2897 | call the corresponding file handler. */ | |
199607e4 | 2898 | handler = Ffind_file_name_handler (absname, Qset_file_modes); |
32f4334d | 2899 | if (!NILP (handler)) |
199607e4 | 2900 | return call3 (handler, Qset_file_modes, absname, mode); |
32f4334d | 2901 | |
199607e4 RS |
2902 | if (chmod (XSTRING (absname)->data, XINT (mode)) < 0) |
2903 | report_file_error ("Doing chmod", Fcons (absname, Qnil)); | |
570d7624 JB |
2904 | |
2905 | return Qnil; | |
2906 | } | |
2907 | ||
c24e9a53 | 2908 | DEFUN ("set-default-file-modes", Fset_default_file_modes, Sset_default_file_modes, 1, 1, 0, |
5f85ea58 RS |
2909 | "Set the file permission bits for newly created files.\n\ |
2910 | The argument MODE should be an integer; only the low 9 bits are used.\n\ | |
36a8c287 | 2911 | This setting is inherited by subprocesses.") |
5f85ea58 RS |
2912 | (mode) |
2913 | Lisp_Object mode; | |
36a8c287 | 2914 | { |
5f85ea58 | 2915 | CHECK_NUMBER (mode, 0); |
199607e4 | 2916 | |
5f85ea58 | 2917 | umask ((~ XINT (mode)) & 0777); |
36a8c287 JB |
2918 | |
2919 | return Qnil; | |
2920 | } | |
2921 | ||
c24e9a53 | 2922 | DEFUN ("default-file-modes", Fdefault_file_modes, Sdefault_file_modes, 0, 0, 0, |
5f85ea58 RS |
2923 | "Return the default file protection for created files.\n\ |
2924 | The value is an integer.") | |
36a8c287 JB |
2925 | () |
2926 | { | |
5f85ea58 RS |
2927 | int realmask; |
2928 | Lisp_Object value; | |
36a8c287 | 2929 | |
5f85ea58 RS |
2930 | realmask = umask (0); |
2931 | umask (realmask); | |
36a8c287 | 2932 | |
46283abe | 2933 | XSETINT (value, (~ realmask) & 0777); |
5f85ea58 | 2934 | return value; |
36a8c287 | 2935 | } |
f793dc6c | 2936 | \f |
85ffea93 RS |
2937 | #ifdef unix |
2938 | ||
2939 | DEFUN ("unix-sync", Funix_sync, Sunix_sync, 0, 0, "", | |
2940 | "Tell Unix to finish all pending disk updates.") | |
2941 | () | |
2942 | { | |
2943 | sync (); | |
2944 | return Qnil; | |
2945 | } | |
2946 | ||
2947 | #endif /* unix */ | |
2948 | ||
570d7624 JB |
2949 | DEFUN ("file-newer-than-file-p", Ffile_newer_than_file_p, Sfile_newer_than_file_p, 2, 2, 0, |
2950 | "Return t if file FILE1 is newer than file FILE2.\n\ | |
2951 | If FILE1 does not exist, the answer is nil;\n\ | |
2952 | otherwise, if FILE2 does not exist, the answer is t.") | |
2953 | (file1, file2) | |
2954 | Lisp_Object file1, file2; | |
2955 | { | |
199607e4 | 2956 | Lisp_Object absname1, absname2; |
570d7624 JB |
2957 | struct stat st; |
2958 | int mtime1; | |
32f4334d | 2959 | Lisp_Object handler; |
09121adc | 2960 | struct gcpro gcpro1, gcpro2; |
570d7624 JB |
2961 | |
2962 | CHECK_STRING (file1, 0); | |
2963 | CHECK_STRING (file2, 0); | |
2964 | ||
199607e4 RS |
2965 | absname1 = Qnil; |
2966 | GCPRO2 (absname1, file2); | |
2967 | absname1 = expand_and_dir_to_file (file1, current_buffer->directory); | |
2968 | absname2 = expand_and_dir_to_file (file2, current_buffer->directory); | |
09121adc | 2969 | UNGCPRO; |
570d7624 | 2970 | |
32f4334d RS |
2971 | /* If the file name has special constructs in it, |
2972 | call the corresponding file handler. */ | |
199607e4 | 2973 | handler = Ffind_file_name_handler (absname1, Qfile_newer_than_file_p); |
51cf6d37 | 2974 | if (NILP (handler)) |
199607e4 | 2975 | handler = Ffind_file_name_handler (absname2, Qfile_newer_than_file_p); |
32f4334d | 2976 | if (!NILP (handler)) |
199607e4 | 2977 | return call3 (handler, Qfile_newer_than_file_p, absname1, absname2); |
32f4334d | 2978 | |
199607e4 | 2979 | if (stat (XSTRING (absname1)->data, &st) < 0) |
570d7624 JB |
2980 | return Qnil; |
2981 | ||
2982 | mtime1 = st.st_mtime; | |
2983 | ||
199607e4 | 2984 | if (stat (XSTRING (absname2)->data, &st) < 0) |
570d7624 JB |
2985 | return Qt; |
2986 | ||
2987 | return (mtime1 > st.st_mtime) ? Qt : Qnil; | |
2988 | } | |
2989 | \f | |
5e570b75 | 2990 | #ifdef DOS_NT |
4c3c22f3 | 2991 | Lisp_Object Qfind_buffer_file_type; |
5e570b75 | 2992 | #endif /* DOS_NT */ |
4c3c22f3 | 2993 | |
6fdaa9a0 KH |
2994 | #ifndef READ_BUF_SIZE |
2995 | #define READ_BUF_SIZE (64 << 10) | |
2996 | #endif | |
2997 | ||
570d7624 | 2998 | DEFUN ("insert-file-contents", Finsert_file_contents, Sinsert_file_contents, |
3d0387c0 | 2999 | 1, 5, 0, |
570d7624 | 3000 | "Insert contents of file FILENAME after point.\n\ |
7fded690 | 3001 | Returns list of absolute file name and length of data inserted.\n\ |
570d7624 JB |
3002 | If second argument VISIT is non-nil, the buffer's visited filename\n\ |
3003 | and last save file modtime are set, and it is marked unmodified.\n\ | |
3004 | If visiting and the file does not exist, visiting is completed\n\ | |
6fdaa9a0 | 3005 | before the error is signaled.\n\ |
7fded690 JB |
3006 | The optional third and fourth arguments BEG and END\n\ |
3007 | specify what portion of the file to insert.\n\ | |
3d0387c0 | 3008 | If VISIT is non-nil, BEG and END must be nil.\n\ |
94bec52a | 3009 | \n\ |
3d0387c0 RS |
3010 | If optional fifth argument REPLACE is non-nil,\n\ |
3011 | it means replace the current buffer contents (in the accessible portion)\n\ | |
3012 | with the file contents. This is better than simply deleting and inserting\n\ | |
3013 | the whole thing because (1) it preserves some marker positions\n\ | |
94bec52a RS |
3014 | and (2) it puts less data in the undo list.\n\ |
3015 | When REPLACE is non-nil, the value is the number of characters actually read,\n\ | |
6fdaa9a0 KH |
3016 | which is often less than the number of characters to be read.\n\ |
3017 | This does code conversion according to the value of\n\ | |
3018 | `coding-system-for-read' or `coding-system-alist', and sets the variable\n\ | |
3019 | `last-coding-system-used' to the coding system actually used.") | |
3d0387c0 RS |
3020 | (filename, visit, beg, end, replace) |
3021 | Lisp_Object filename, visit, beg, end, replace; | |
570d7624 JB |
3022 | { |
3023 | struct stat st; | |
3024 | register int fd; | |
3025 | register int inserted = 0; | |
3026 | register int how_much; | |
6fdaa9a0 | 3027 | register int unprocessed; |
570d7624 | 3028 | int count = specpdl_ptr - specpdl; |
1a04498e | 3029 | struct gcpro gcpro1, gcpro2, gcpro3; |
d6a3cc15 RS |
3030 | Lisp_Object handler, val, insval; |
3031 | Lisp_Object p; | |
7fded690 | 3032 | int total; |
53c34c46 | 3033 | int not_regular = 0; |
6fdaa9a0 KH |
3034 | char read_buf[READ_BUF_SIZE]; |
3035 | struct coding_system coding; | |
3dbcf3f6 | 3036 | unsigned char buffer[1 << 14]; |
727a0b4a | 3037 | int replace_handled = 0; |
32f4334d | 3038 | |
95385625 RS |
3039 | if (current_buffer->base_buffer && ! NILP (visit)) |
3040 | error ("Cannot do file visiting in an indirect buffer"); | |
3041 | ||
3042 | if (!NILP (current_buffer->read_only)) | |
3043 | Fbarf_if_buffer_read_only (); | |
3044 | ||
32f4334d | 3045 | val = Qnil; |
d6a3cc15 | 3046 | p = Qnil; |
32f4334d | 3047 | |
1a04498e | 3048 | GCPRO3 (filename, val, p); |
570d7624 JB |
3049 | |
3050 | CHECK_STRING (filename, 0); | |
3051 | filename = Fexpand_file_name (filename, Qnil); | |
3052 | ||
32f4334d RS |
3053 | /* If the file name has special constructs in it, |
3054 | call the corresponding file handler. */ | |
49307295 | 3055 | handler = Ffind_file_name_handler (filename, Qinsert_file_contents); |
32f4334d RS |
3056 | if (!NILP (handler)) |
3057 | { | |
3d0387c0 RS |
3058 | val = call6 (handler, Qinsert_file_contents, filename, |
3059 | visit, beg, end, replace); | |
32f4334d RS |
3060 | goto handled; |
3061 | } | |
3062 | ||
6fdaa9a0 KH |
3063 | /* Decide the coding-system of the file. */ |
3064 | { | |
3065 | Lisp_Object val = Vcoding_system_for_read; | |
719c80be KH |
3066 | if (NILP (current_buffer->enable_multibyte_characters)) |
3067 | val = Qnil; | |
3068 | else if (NILP (val)) | |
6fdaa9a0 KH |
3069 | { |
3070 | Lisp_Object args[6], coding_systems; | |
3071 | ||
3072 | args[0] = Qinsert_file_contents, args[1] = filename, args[2] = visit, | |
3073 | args[3] = beg, args[4] = end, args[5] = replace; | |
3074 | coding_systems = Ffind_coding_system (6, args); | |
3075 | val = CONSP (coding_systems) ? XCONS (coding_systems)->car : Qnil; | |
3076 | } | |
3077 | setup_coding_system (Fcheck_coding_system (val), &coding); | |
3078 | } | |
3079 | ||
570d7624 JB |
3080 | fd = -1; |
3081 | ||
3082 | #ifndef APOLLO | |
99bc28f4 | 3083 | if (stat (XSTRING (filename)->data, &st) < 0) |
570d7624 | 3084 | #else |
4018b5ef | 3085 | if ((fd = open (XSTRING (filename)->data, O_RDONLY)) < 0 |
570d7624 JB |
3086 | || fstat (fd, &st) < 0) |
3087 | #endif /* not APOLLO */ | |
3088 | { | |
3089 | if (fd >= 0) close (fd); | |
99bc28f4 | 3090 | badopen: |
265a9e55 | 3091 | if (NILP (visit)) |
570d7624 JB |
3092 | report_file_error ("Opening input file", Fcons (filename, Qnil)); |
3093 | st.st_mtime = -1; | |
3094 | how_much = 0; | |
3095 | goto notfound; | |
3096 | } | |
3097 | ||
99bc28f4 | 3098 | #ifdef S_IFREG |
be53b411 JB |
3099 | /* This code will need to be changed in order to work on named |
3100 | pipes, and it's probably just not worth it. So we should at | |
3101 | least signal an error. */ | |
99bc28f4 | 3102 | if (!S_ISREG (st.st_mode)) |
330bfe57 | 3103 | { |
d4b8687b RS |
3104 | not_regular = 1; |
3105 | ||
3106 | if (! NILP (visit)) | |
3107 | goto notfound; | |
3108 | ||
3109 | if (! NILP (replace) || ! NILP (beg) || ! NILP (end)) | |
330bfe57 RS |
3110 | Fsignal (Qfile_error, |
3111 | Fcons (build_string ("not a regular file"), | |
3112 | Fcons (filename, Qnil))); | |
330bfe57 | 3113 | } |
be53b411 JB |
3114 | #endif |
3115 | ||
99bc28f4 | 3116 | if (fd < 0) |
4018b5ef | 3117 | if ((fd = open (XSTRING (filename)->data, O_RDONLY)) < 0) |
99bc28f4 KH |
3118 | goto badopen; |
3119 | ||
3120 | /* Replacement should preserve point as it preserves markers. */ | |
3121 | if (!NILP (replace)) | |
3122 | record_unwind_protect (restore_point_unwind, Fpoint_marker ()); | |
3123 | ||
3124 | record_unwind_protect (close_file_unwind, make_number (fd)); | |
3125 | ||
570d7624 | 3126 | /* Supposedly happens on VMS. */ |
d4b8687b | 3127 | if (! not_regular && st.st_size < 0) |
570d7624 | 3128 | error ("File size is negative"); |
be53b411 | 3129 | |
7fded690 JB |
3130 | if (!NILP (beg) || !NILP (end)) |
3131 | if (!NILP (visit)) | |
3132 | error ("Attempt to visit less than an entire file"); | |
3133 | ||
3134 | if (!NILP (beg)) | |
3135 | CHECK_NUMBER (beg, 0); | |
3136 | else | |
2acfd7ae | 3137 | XSETFASTINT (beg, 0); |
7fded690 JB |
3138 | |
3139 | if (!NILP (end)) | |
3140 | CHECK_NUMBER (end, 0); | |
3141 | else | |
3142 | { | |
d4b8687b RS |
3143 | if (! not_regular) |
3144 | { | |
3145 | XSETINT (end, st.st_size); | |
3146 | if (XINT (end) != st.st_size) | |
3147 | error ("Maximum buffer size exceeded"); | |
3148 | } | |
7fded690 JB |
3149 | } |
3150 | ||
3d0387c0 RS |
3151 | /* If requested, replace the accessible part of the buffer |
3152 | with the file contents. Avoid replacing text at the | |
3153 | beginning or end of the buffer that matches the file contents; | |
3dbcf3f6 RS |
3154 | that preserves markers pointing to the unchanged parts. |
3155 | ||
3156 | Here we implement this feature in an optimized way | |
3157 | for the case where code conversion is NOT needed. | |
3158 | The following if-statement handles the case of conversion | |
727a0b4a RS |
3159 | in a less optimal way. |
3160 | ||
3161 | If the code conversion is "automatic" then we try using this | |
3162 | method and hope for the best. | |
3163 | But if we discover the need for conversion, we give up on this method | |
3164 | and let the following if-statement handle the replace job. */ | |
3dbcf3f6 | 3165 | if (!NILP (replace) |
727a0b4a | 3166 | && (! CODING_REQUIRE_CONVERSION (&coding) |
0ef69138 | 3167 | || (coding.type == coding_type_undecided |
b00ca0d7 | 3168 | && ! CODING_REQUIRE_EOL_CONVERSION (&coding)) |
0ef69138 | 3169 | || (coding.eol_type == CODING_EOL_UNDECIDED |
b00ca0d7 | 3170 | && ! CODING_REQUIRE_TEXT_CONVERSION (&coding)))) |
3d0387c0 | 3171 | { |
3d0387c0 RS |
3172 | int same_at_start = BEGV; |
3173 | int same_at_end = ZV; | |
9c28748f | 3174 | int overlap; |
6fdaa9a0 KH |
3175 | /* There is still a possibility we will find the need to do code |
3176 | conversion. If that happens, we set this variable to 1 to | |
727a0b4a | 3177 | give up on handling REPLACE in the optimized way. */ |
6fdaa9a0 | 3178 | int giveup_match_end = 0; |
9c28748f | 3179 | |
4d2a0879 RS |
3180 | if (XINT (beg) != 0) |
3181 | { | |
3182 | if (lseek (fd, XINT (beg), 0) < 0) | |
3183 | report_file_error ("Setting file position", | |
3184 | Fcons (filename, Qnil)); | |
3185 | } | |
3186 | ||
3d0387c0 RS |
3187 | immediate_quit = 1; |
3188 | QUIT; | |
3189 | /* Count how many chars at the start of the file | |
3190 | match the text at the beginning of the buffer. */ | |
3191 | while (1) | |
3192 | { | |
3193 | int nread, bufpos; | |
3194 | ||
3195 | nread = read (fd, buffer, sizeof buffer); | |
3196 | if (nread < 0) | |
3197 | error ("IO error reading %s: %s", | |
3198 | XSTRING (filename)->data, strerror (errno)); | |
3199 | else if (nread == 0) | |
3200 | break; | |
6fdaa9a0 | 3201 | |
0ef69138 | 3202 | if (coding.type == coding_type_undecided) |
727a0b4a | 3203 | detect_coding (&coding, buffer, nread); |
1b335d29 RS |
3204 | if (coding.type != coding_type_undecided |
3205 | && CODING_REQUIRE_TEXT_CONVERSION (&coding)) | |
727a0b4a RS |
3206 | /* We found that the file should be decoded somehow. |
3207 | Let's give up here. */ | |
3208 | { | |
3209 | giveup_match_end = 1; | |
3210 | break; | |
3211 | } | |
3212 | ||
0ef69138 | 3213 | if (coding.eol_type == CODING_EOL_UNDECIDED) |
727a0b4a | 3214 | detect_eol (&coding, buffer, nread); |
1b335d29 RS |
3215 | if (coding.eol_type != CODING_EOL_UNDECIDED |
3216 | && CODING_REQUIRE_EOL_CONVERSION (&coding)) | |
727a0b4a RS |
3217 | /* We found that the format of eol should be decoded. |
3218 | Let's give up here. */ | |
3219 | { | |
3220 | giveup_match_end = 1; | |
3221 | break; | |
3222 | } | |
3223 | ||
3d0387c0 RS |
3224 | bufpos = 0; |
3225 | while (bufpos < nread && same_at_start < ZV | |
6fdaa9a0 | 3226 | && FETCH_BYTE (same_at_start) == buffer[bufpos]) |
3d0387c0 RS |
3227 | same_at_start++, bufpos++; |
3228 | /* If we found a discrepancy, stop the scan. | |
8e6208c5 | 3229 | Otherwise loop around and scan the next bufferful. */ |
3d0387c0 RS |
3230 | if (bufpos != nread) |
3231 | break; | |
3232 | } | |
3233 | immediate_quit = 0; | |
3234 | /* If the file matches the buffer completely, | |
3235 | there's no need to replace anything. */ | |
4d2a0879 | 3236 | if (same_at_start - BEGV == XINT (end)) |
3d0387c0 RS |
3237 | { |
3238 | close (fd); | |
a1d2b64a | 3239 | specpdl_ptr--; |
1051b3b3 RS |
3240 | /* Truncate the buffer to the size of the file. */ |
3241 | del_range_1 (same_at_start, same_at_end, 0); | |
3d0387c0 RS |
3242 | goto handled; |
3243 | } | |
3244 | immediate_quit = 1; | |
3245 | QUIT; | |
3246 | /* Count how many chars at the end of the file | |
6fdaa9a0 KH |
3247 | match the text at the end of the buffer. But, if we have |
3248 | already found that decoding is necessary, don't waste time. */ | |
3249 | while (!giveup_match_end) | |
3d0387c0 RS |
3250 | { |
3251 | int total_read, nread, bufpos, curpos, trial; | |
3252 | ||
3253 | /* At what file position are we now scanning? */ | |
4d2a0879 | 3254 | curpos = XINT (end) - (ZV - same_at_end); |
fc81fa9e KH |
3255 | /* If the entire file matches the buffer tail, stop the scan. */ |
3256 | if (curpos == 0) | |
3257 | break; | |
3d0387c0 RS |
3258 | /* How much can we scan in the next step? */ |
3259 | trial = min (curpos, sizeof buffer); | |
3260 | if (lseek (fd, curpos - trial, 0) < 0) | |
3261 | report_file_error ("Setting file position", | |
3262 | Fcons (filename, Qnil)); | |
3263 | ||
3264 | total_read = 0; | |
3265 | while (total_read < trial) | |
3266 | { | |
3267 | nread = read (fd, buffer + total_read, trial - total_read); | |
3268 | if (nread <= 0) | |
3269 | error ("IO error reading %s: %s", | |
3270 | XSTRING (filename)->data, strerror (errno)); | |
3271 | total_read += nread; | |
3272 | } | |
8e6208c5 | 3273 | /* Scan this bufferful from the end, comparing with |
3d0387c0 RS |
3274 | the Emacs buffer. */ |
3275 | bufpos = total_read; | |
3276 | /* Compare with same_at_start to avoid counting some buffer text | |
3277 | as matching both at the file's beginning and at the end. */ | |
3278 | while (bufpos > 0 && same_at_end > same_at_start | |
6fdaa9a0 | 3279 | && FETCH_BYTE (same_at_end - 1) == buffer[bufpos - 1]) |
3d0387c0 | 3280 | same_at_end--, bufpos--; |
727a0b4a | 3281 | |
3d0387c0 | 3282 | /* If we found a discrepancy, stop the scan. |
8e6208c5 | 3283 | Otherwise loop around and scan the preceding bufferful. */ |
3d0387c0 | 3284 | if (bufpos != 0) |
727a0b4a RS |
3285 | { |
3286 | /* If this discrepancy is because of code conversion, | |
3287 | we cannot use this method; giveup and try the other. */ | |
3288 | if (same_at_end > same_at_start | |
3289 | && FETCH_BYTE (same_at_end - 1) >= 0200 | |
3290 | && ! NILP (current_buffer->enable_multibyte_characters)) | |
3291 | giveup_match_end = 1; | |
3292 | break; | |
3293 | } | |
3d0387c0 RS |
3294 | } |
3295 | immediate_quit = 0; | |
9c28748f | 3296 | |
727a0b4a RS |
3297 | if (! giveup_match_end) |
3298 | { | |
3299 | /* We win! We can handle REPLACE the optimized way. */ | |
9c28748f | 3300 | |
727a0b4a RS |
3301 | /* Don't try to reuse the same piece of text twice. */ |
3302 | overlap = same_at_start - BEGV - (same_at_end + st.st_size - ZV); | |
3303 | if (overlap > 0) | |
3304 | same_at_end += overlap; | |
9c28748f | 3305 | |
727a0b4a RS |
3306 | /* Arrange to read only the nonmatching middle part of the file. */ |
3307 | XSETFASTINT (beg, XINT (beg) + (same_at_start - BEGV)); | |
3308 | XSETFASTINT (end, XINT (end) - (ZV - same_at_end)); | |
3dbcf3f6 | 3309 | |
727a0b4a RS |
3310 | del_range_1 (same_at_start, same_at_end, 0); |
3311 | /* Insert from the file at the proper position. */ | |
3312 | SET_PT (same_at_start); | |
3313 | ||
3314 | /* If display currently starts at beginning of line, | |
3315 | keep it that way. */ | |
3316 | if (XBUFFER (XWINDOW (selected_window)->buffer) == current_buffer) | |
3317 | XWINDOW (selected_window)->start_at_line_beg = Fbolp (); | |
3318 | ||
3319 | replace_handled = 1; | |
3320 | } | |
3dbcf3f6 RS |
3321 | } |
3322 | ||
3323 | /* If requested, replace the accessible part of the buffer | |
3324 | with the file contents. Avoid replacing text at the | |
3325 | beginning or end of the buffer that matches the file contents; | |
3326 | that preserves markers pointing to the unchanged parts. | |
3327 | ||
3328 | Here we implement this feature for the case where code conversion | |
3329 | is needed, in a simple way that needs a lot of memory. | |
3330 | The preceding if-statement handles the case of no conversion | |
3331 | in a more optimized way. */ | |
727a0b4a | 3332 | if (!NILP (replace) && ! replace_handled) |
3dbcf3f6 RS |
3333 | { |
3334 | int same_at_start = BEGV; | |
3335 | int same_at_end = ZV; | |
3336 | int overlap; | |
3337 | int bufpos; | |
3338 | /* Make sure that the gap is large enough. */ | |
3339 | int bufsize = 2 * st.st_size; | |
b00ca0d7 | 3340 | unsigned char *conversion_buffer = (unsigned char *) xmalloc (bufsize); |
3dbcf3f6 RS |
3341 | |
3342 | /* First read the whole file, performing code conversion into | |
3343 | CONVERSION_BUFFER. */ | |
3344 | ||
727a0b4a RS |
3345 | if (lseek (fd, XINT (beg), 0) < 0) |
3346 | { | |
3347 | free (conversion_buffer); | |
3348 | report_file_error ("Setting file position", | |
3349 | Fcons (filename, Qnil)); | |
3350 | } | |
3351 | ||
3dbcf3f6 RS |
3352 | total = st.st_size; /* Total bytes in the file. */ |
3353 | how_much = 0; /* Bytes read from file so far. */ | |
3354 | inserted = 0; /* Bytes put into CONVERSION_BUFFER so far. */ | |
3355 | unprocessed = 0; /* Bytes not processed in previous loop. */ | |
3356 | ||
3357 | while (how_much < total) | |
3358 | { | |
3359 | /* try is reserved in some compilers (Microsoft C) */ | |
3360 | int trytry = min (total - how_much, READ_BUF_SIZE - unprocessed); | |
3361 | char *destination = read_buf + unprocessed; | |
3362 | int this; | |
3363 | ||
3364 | /* Allow quitting out of the actual I/O. */ | |
3365 | immediate_quit = 1; | |
3366 | QUIT; | |
3367 | this = read (fd, destination, trytry); | |
3368 | immediate_quit = 0; | |
3369 | ||
3370 | if (this < 0 || this + unprocessed == 0) | |
3371 | { | |
3372 | how_much = this; | |
3373 | break; | |
3374 | } | |
3375 | ||
3376 | how_much += this; | |
3377 | ||
3378 | if (CODING_REQUIRE_CONVERSION (&coding)) | |
3379 | { | |
3380 | int require, produced, consumed; | |
3381 | ||
3382 | this += unprocessed; | |
3383 | ||
3384 | /* If we are using more space than estimated, | |
3385 | make CONVERSION_BUFFER bigger. */ | |
3386 | require = decoding_buffer_size (&coding, this); | |
3387 | if (inserted + require + 2 * (total - how_much) > bufsize) | |
3388 | { | |
3389 | bufsize = inserted + require + 2 * (total - how_much); | |
92cf1086 | 3390 | conversion_buffer = (unsigned char *) xrealloc (conversion_buffer, bufsize); |
3dbcf3f6 RS |
3391 | } |
3392 | ||
3393 | /* Convert this batch with results in CONVERSION_BUFFER. */ | |
3394 | if (how_much >= total) /* This is the last block. */ | |
3395 | coding.last_block = 1; | |
3396 | produced = decode_coding (&coding, read_buf, | |
3397 | conversion_buffer + inserted, | |
3398 | this, bufsize - inserted, | |
3399 | &consumed); | |
3400 | ||
3401 | /* Save for next iteration whatever we didn't convert. */ | |
3402 | unprocessed = this - consumed; | |
3403 | bcopy (read_buf + consumed, read_buf, unprocessed); | |
3404 | this = produced; | |
3405 | } | |
3406 | ||
3407 | inserted += this; | |
3408 | } | |
3409 | ||
3410 | /* At this point, INSERTED is how many characters | |
3411 | are present in CONVERSION_BUFFER. | |
3412 | HOW_MUCH should equal TOTAL, | |
3413 | or should be <= 0 if we couldn't read the file. */ | |
3414 | ||
3415 | if (how_much < 0) | |
3416 | { | |
3417 | free (conversion_buffer); | |
3418 | ||
3419 | if (how_much == -1) | |
3420 | error ("IO error reading %s: %s", | |
3421 | XSTRING (filename)->data, strerror (errno)); | |
3422 | else if (how_much == -2) | |
3423 | error ("maximum buffer size exceeded"); | |
3424 | } | |
3425 | ||
3426 | /* Compare the beginning of the converted file | |
3427 | with the buffer text. */ | |
3428 | ||
3429 | bufpos = 0; | |
3430 | while (bufpos < inserted && same_at_start < same_at_end | |
3431 | && FETCH_BYTE (same_at_start) == conversion_buffer[bufpos]) | |
3432 | same_at_start++, bufpos++; | |
3433 | ||
3434 | /* If the file matches the buffer completely, | |
3435 | there's no need to replace anything. */ | |
3436 | ||
3437 | if (bufpos == inserted) | |
3438 | { | |
3439 | free (conversion_buffer); | |
3440 | close (fd); | |
3441 | specpdl_ptr--; | |
3442 | /* Truncate the buffer to the size of the file. */ | |
3443 | del_range_1 (same_at_start, same_at_end, 0); | |
3444 | goto handled; | |
3445 | } | |
3446 | ||
3447 | /* Scan this bufferful from the end, comparing with | |
3448 | the Emacs buffer. */ | |
3449 | bufpos = inserted; | |
3450 | ||
3451 | /* Compare with same_at_start to avoid counting some buffer text | |
3452 | as matching both at the file's beginning and at the end. */ | |
3453 | while (bufpos > 0 && same_at_end > same_at_start | |
3454 | && FETCH_BYTE (same_at_end - 1) == conversion_buffer[bufpos - 1]) | |
3455 | same_at_end--, bufpos--; | |
3456 | ||
3457 | /* Don't try to reuse the same piece of text twice. */ | |
3458 | overlap = same_at_start - BEGV - (same_at_end + inserted - ZV); | |
3459 | if (overlap > 0) | |
3460 | same_at_end += overlap; | |
3461 | ||
727a0b4a RS |
3462 | /* If display currently starts at beginning of line, |
3463 | keep it that way. */ | |
3464 | if (XBUFFER (XWINDOW (selected_window)->buffer) == current_buffer) | |
3465 | XWINDOW (selected_window)->start_at_line_beg = Fbolp (); | |
3466 | ||
3dbcf3f6 RS |
3467 | /* Replace the chars that we need to replace, |
3468 | and update INSERTED to equal the number of bytes | |
3469 | we are taking from the file. */ | |
3470 | inserted -= (Z - same_at_end) + (same_at_start - BEG); | |
3471 | move_gap (same_at_start); | |
3472 | del_range_1 (same_at_start, same_at_end, 0); | |
0342d8c5 RS |
3473 | SET_PT (same_at_start); |
3474 | insert_1 (conversion_buffer + same_at_start - BEG, inserted, 0, 0); | |
3dbcf3f6 RS |
3475 | |
3476 | free (conversion_buffer); | |
3477 | close (fd); | |
3478 | specpdl_ptr--; | |
3479 | ||
3dbcf3f6 | 3480 | goto handled; |
3d0387c0 RS |
3481 | } |
3482 | ||
d4b8687b RS |
3483 | if (! not_regular) |
3484 | { | |
3485 | register Lisp_Object temp; | |
7fded690 | 3486 | |
d4b8687b | 3487 | total = XINT (end) - XINT (beg); |
570d7624 | 3488 | |
d4b8687b RS |
3489 | /* Make sure point-max won't overflow after this insertion. */ |
3490 | XSETINT (temp, total); | |
3491 | if (total != XINT (temp)) | |
3492 | error ("Maximum buffer size exceeded"); | |
3493 | } | |
3494 | else | |
3495 | /* For a special file, all we can do is guess. */ | |
3496 | total = READ_BUF_SIZE; | |
570d7624 | 3497 | |
57d8d468 | 3498 | if (NILP (visit) && total > 0) |
7fe52289 | 3499 | prepare_to_modify_buffer (PT, PT); |
570d7624 | 3500 | |
7fe52289 | 3501 | move_gap (PT); |
7fded690 JB |
3502 | if (GAP_SIZE < total) |
3503 | make_gap (total - GAP_SIZE); | |
3504 | ||
a1d2b64a | 3505 | if (XINT (beg) != 0 || !NILP (replace)) |
7fded690 JB |
3506 | { |
3507 | if (lseek (fd, XINT (beg), 0) < 0) | |
3508 | report_file_error ("Setting file position", Fcons (filename, Qnil)); | |
3509 | } | |
3510 | ||
6fdaa9a0 KH |
3511 | /* In the following loop, HOW_MUCH contains the total bytes read so |
3512 | far. Before exiting the loop, it is set to -1 if I/O error | |
3513 | occurs, set to -2 if the maximum buffer size is exceeded. */ | |
a1d2b64a | 3514 | how_much = 0; |
6fdaa9a0 KH |
3515 | /* Total bytes inserted. */ |
3516 | inserted = 0; | |
3517 | /* Bytes not processed in the previous loop because short gap size. */ | |
3518 | unprocessed = 0; | |
3519 | while (how_much < total) | |
570d7624 | 3520 | { |
5e570b75 | 3521 | /* try is reserved in some compilers (Microsoft C) */ |
6fdaa9a0 KH |
3522 | int trytry = min (total - how_much, READ_BUF_SIZE - unprocessed); |
3523 | char *destination = (CODING_REQUIRE_CONVERSION (&coding) | |
3524 | ? read_buf + unprocessed | |
3525 | : (char *) (POS_ADDR (PT + inserted - 1) + 1)); | |
b5148e85 RS |
3526 | int this; |
3527 | ||
3528 | /* Allow quitting out of the actual I/O. */ | |
3529 | immediate_quit = 1; | |
3530 | QUIT; | |
6fdaa9a0 | 3531 | this = read (fd, destination, trytry); |
b5148e85 | 3532 | immediate_quit = 0; |
570d7624 | 3533 | |
6fdaa9a0 | 3534 | if (this < 0 || this + unprocessed == 0) |
570d7624 JB |
3535 | { |
3536 | how_much = this; | |
3537 | break; | |
3538 | } | |
3539 | ||
d4b8687b RS |
3540 | /* For a regular file, where TOTAL is the real size, |
3541 | count HOW_MUCH to compare with it. | |
3542 | For a special file, where TOTAL is just a buffer size, | |
3543 | so don't bother counting in HOW_MUCH. | |
3544 | (INSERTED is where we count the number of characters inserted.) */ | |
3545 | if (! not_regular) | |
3546 | how_much += this; | |
6fdaa9a0 KH |
3547 | |
3548 | if (CODING_REQUIRE_CONVERSION (&coding)) | |
3549 | { | |
3550 | int require, produced, consumed; | |
3551 | ||
3552 | this += unprocessed; | |
3553 | /* Make sure that the gap is large enough. */ | |
3554 | require = decoding_buffer_size (&coding, this); | |
3555 | if (GAP_SIZE < require) | |
3556 | make_gap (require - GAP_SIZE); | |
d4b8687b RS |
3557 | |
3558 | if (! not_regular) | |
3559 | { | |
3560 | if (how_much >= total) /* This is the last block. */ | |
3561 | coding.last_block = 1; | |
3562 | } | |
3563 | else | |
3564 | { | |
3565 | /* If we encounter EOF, say it is the last block. (The | |
3566 | data this will apply to is the UNPROCESSED characters | |
3567 | carried over from the last batch.) */ | |
3568 | if (this == 0) | |
3569 | coding.last_block = 1; | |
3570 | } | |
3571 | ||
6fdaa9a0 KH |
3572 | produced = decode_coding (&coding, read_buf, |
3573 | POS_ADDR (PT + inserted - 1) + 1, | |
3574 | this, GAP_SIZE, &consumed); | |
3575 | if (produced > 0) | |
3576 | { | |
3577 | Lisp_Object temp; | |
3578 | ||
3579 | XSET (temp, Lisp_Int, Z + produced); | |
3580 | if (Z + produced != XINT (temp)) | |
3581 | { | |
3582 | how_much = -2; | |
3583 | break; | |
3584 | } | |
3585 | } | |
3586 | unprocessed = this - consumed; | |
3587 | bcopy (read_buf + consumed, read_buf, unprocessed); | |
3588 | this = produced; | |
3589 | } | |
3590 | ||
570d7624 JB |
3591 | GPT += this; |
3592 | GAP_SIZE -= this; | |
3593 | ZV += this; | |
3594 | Z += this; | |
6fdaa9a0 KH |
3595 | if (GAP_SIZE > 0) |
3596 | /* Put an anchor to ensure multi-byte form ends at gap. */ | |
3597 | *GPT_ADDR = 0; | |
570d7624 JB |
3598 | inserted += this; |
3599 | } | |
3600 | ||
6fdaa9a0 KH |
3601 | /* We don't have to consider file type of MSDOS because all files |
3602 | are read as binary and end-of-line format has already been | |
3603 | decoded appropriately. */ | |
3604 | #if 0 | |
5e570b75 | 3605 | #ifdef DOS_NT |
4c3c22f3 RS |
3606 | /* Demacs 1.1.1 91/10/16 HIRANO Satoshi, MW July 1993 */ |
3607 | /* Determine file type from name and remove LFs from CR-LFs if the file | |
3608 | is deemed to be a text file. */ | |
3609 | { | |
bf162ea8 RS |
3610 | current_buffer->buffer_file_type |
3611 | = call1 (Qfind_buffer_file_type, filename); | |
bf162ea8 | 3612 | if (NILP (current_buffer->buffer_file_type)) |
4c3c22f3 | 3613 | { |
a1d2b64a | 3614 | int reduced_size |
6fdaa9a0 | 3615 | = inserted - crlf_to_lf (inserted, POS_ADDR (PT - 1) + 1); |
4c3c22f3 RS |
3616 | ZV -= reduced_size; |
3617 | Z -= reduced_size; | |
3618 | GPT -= reduced_size; | |
3619 | GAP_SIZE += reduced_size; | |
3620 | inserted -= reduced_size; | |
3621 | } | |
3622 | } | |
5e570b75 | 3623 | #endif /* DOS_NT */ |
6fdaa9a0 | 3624 | #endif /* 0 */ |
4c3c22f3 | 3625 | |
570d7624 | 3626 | if (inserted > 0) |
7d8451f1 | 3627 | { |
7fe52289 | 3628 | record_insert (PT, inserted); |
8d4e077b JA |
3629 | |
3630 | /* Only defined if Emacs is compiled with USE_TEXT_PROPERTIES */ | |
7fe52289 | 3631 | offset_intervals (current_buffer, PT, inserted); |
7d8451f1 RS |
3632 | MODIFF++; |
3633 | } | |
570d7624 JB |
3634 | |
3635 | close (fd); | |
3636 | ||
a1d2b64a RS |
3637 | /* Discard the unwind protect for closing the file. */ |
3638 | specpdl_ptr--; | |
570d7624 | 3639 | |
6fdaa9a0 | 3640 | if (how_much == -1) |
570d7624 | 3641 | error ("IO error reading %s: %s", |
ce97267f | 3642 | XSTRING (filename)->data, strerror (errno)); |
6fdaa9a0 KH |
3643 | else if (how_much == -2) |
3644 | error ("maximum buffer size exceeded"); | |
570d7624 JB |
3645 | |
3646 | notfound: | |
32f4334d | 3647 | handled: |
570d7624 | 3648 | |
265a9e55 | 3649 | if (!NILP (visit)) |
570d7624 | 3650 | { |
cfadd376 RS |
3651 | if (!EQ (current_buffer->undo_list, Qt)) |
3652 | current_buffer->undo_list = Qnil; | |
570d7624 JB |
3653 | #ifdef APOLLO |
3654 | stat (XSTRING (filename)->data, &st); | |
3655 | #endif | |
62bcf009 | 3656 | |
a7e82472 RS |
3657 | if (NILP (handler)) |
3658 | { | |
3659 | current_buffer->modtime = st.st_mtime; | |
3660 | current_buffer->filename = filename; | |
3661 | } | |
62bcf009 | 3662 | |
95385625 | 3663 | SAVE_MODIFF = MODIFF; |
570d7624 | 3664 | current_buffer->auto_save_modified = MODIFF; |
2acfd7ae | 3665 | XSETFASTINT (current_buffer->save_length, Z - BEG); |
570d7624 | 3666 | #ifdef CLASH_DETECTION |
32f4334d RS |
3667 | if (NILP (handler)) |
3668 | { | |
f471f4c2 RS |
3669 | if (!NILP (current_buffer->file_truename)) |
3670 | unlock_file (current_buffer->file_truename); | |
32f4334d RS |
3671 | unlock_file (filename); |
3672 | } | |
570d7624 | 3673 | #endif /* CLASH_DETECTION */ |
330bfe57 RS |
3674 | if (not_regular) |
3675 | Fsignal (Qfile_error, | |
3676 | Fcons (build_string ("not a regular file"), | |
3677 | Fcons (filename, Qnil))); | |
3678 | ||
570d7624 | 3679 | /* If visiting nonexistent file, return nil. */ |
32f4334d | 3680 | if (current_buffer->modtime == -1) |
570d7624 JB |
3681 | report_file_error ("Opening input file", Fcons (filename, Qnil)); |
3682 | } | |
3683 | ||
0d420e88 BG |
3684 | /* Decode file format */ |
3685 | if (inserted > 0) | |
3686 | { | |
199607e4 | 3687 | insval = call3 (Qformat_decode, |
0d420e88 BG |
3688 | Qnil, make_number (inserted), visit); |
3689 | CHECK_NUMBER (insval, 0); | |
3690 | inserted = XFASTINT (insval); | |
3691 | } | |
3692 | ||
0342d8c5 RS |
3693 | /* Call after-change hooks for the inserted text, aside from the case |
3694 | of normal visiting (not with REPLACE), which is done in a new buffer | |
3695 | "before" the buffer is changed. */ | |
3696 | if (inserted > 0 && total > 0 | |
3697 | && (NILP (visit) || !NILP (replace))) | |
7fe52289 | 3698 | signal_after_change (PT, 0, inserted); |
199607e4 | 3699 | |
d6a3cc15 RS |
3700 | if (inserted > 0) |
3701 | { | |
3702 | p = Vafter_insert_file_functions; | |
6fdaa9a0 KH |
3703 | if (!NILP (coding.post_read_conversion)) |
3704 | p = Fcons (coding.post_read_conversion, p); | |
3705 | ||
d6a3cc15 RS |
3706 | while (!NILP (p)) |
3707 | { | |
3708 | insval = call1 (Fcar (p), make_number (inserted)); | |
3709 | if (!NILP (insval)) | |
3710 | { | |
3711 | CHECK_NUMBER (insval, 0); | |
3712 | inserted = XFASTINT (insval); | |
3713 | } | |
3714 | QUIT; | |
3715 | p = Fcdr (p); | |
3716 | } | |
3717 | } | |
3718 | ||
a1d2b64a RS |
3719 | if (NILP (val)) |
3720 | val = Fcons (filename, | |
3721 | Fcons (make_number (inserted), | |
3722 | Qnil)); | |
3723 | ||
3724 | RETURN_UNGCPRO (unbind_to (count, val)); | |
570d7624 | 3725 | } |
7fded690 | 3726 | \f |
d6a3cc15 RS |
3727 | static Lisp_Object build_annotations (); |
3728 | ||
6fc6f94b | 3729 | /* If build_annotations switched buffers, switch back to BUF. |
6fdaa9a0 KH |
3730 | Kill the temporary buffer that was selected in the meantime. |
3731 | ||
3732 | Since this kill only the last temporary buffer, some buffers remain | |
3733 | not killed if build_annotations switched buffers more than once. | |
3734 | -- K.Handa */ | |
6fc6f94b | 3735 | |
199607e4 | 3736 | static Lisp_Object |
6fc6f94b RS |
3737 | build_annotations_unwind (buf) |
3738 | Lisp_Object buf; | |
3739 | { | |
3740 | Lisp_Object tembuf; | |
3741 | ||
3742 | if (XBUFFER (buf) == current_buffer) | |
3743 | return Qnil; | |
3744 | tembuf = Fcurrent_buffer (); | |
3745 | Fset_buffer (buf); | |
3746 | Fkill_buffer (tembuf); | |
3747 | return Qnil; | |
3748 | } | |
3749 | ||
115af127 KH |
3750 | DEFUN ("write-region", Fwrite_region, Swrite_region, 3, 6, |
3751 | "r\nFWrite region to file: ", | |
570d7624 JB |
3752 | "Write current region into specified file.\n\ |
3753 | When called from a program, takes three arguments:\n\ | |
3754 | START, END and FILENAME. START and END are buffer positions.\n\ | |
3755 | Optional fourth argument APPEND if non-nil means\n\ | |
3756 | append to existing file contents (if any).\n\ | |
3757 | Optional fifth argument VISIT if t means\n\ | |
3758 | set the last-save-file-modtime of buffer to this file's modtime\n\ | |
3759 | and mark buffer not modified.\n\ | |
3b7792ed RS |
3760 | If VISIT is a string, it is a second file name;\n\ |
3761 | the output goes to FILENAME, but the buffer is marked as visiting VISIT.\n\ | |
3762 | VISIT is also the file name to lock and unlock for clash detection.\n\ | |
1d386d28 RS |
3763 | If VISIT is neither t nor nil nor a string,\n\ |
3764 | that means do not print the \"Wrote file\" message.\n\ | |
7204a979 | 3765 | The optional sixth arg LOCKNAME, if non-nil, specifies the name to\n\ |
8b68aae7 | 3766 | use for locking and unlocking, overriding FILENAME and VISIT.\n\ |
570d7624 | 3767 | Kludgy feature: if START is a string, then that string is written\n\ |
cdfb0f1d | 3768 | to the file, instead of any buffer contents, and END is ignored.") |
115af127 | 3769 | (start, end, filename, append, visit, lockname) |
7204a979 | 3770 | Lisp_Object start, end, filename, append, visit, lockname; |
570d7624 JB |
3771 | { |
3772 | register int desc; | |
3773 | int failure; | |
3774 | int save_errno; | |
3775 | unsigned char *fn; | |
3776 | struct stat st; | |
c975dd7a | 3777 | int tem; |
570d7624 | 3778 | int count = specpdl_ptr - specpdl; |
6fc6f94b | 3779 | int count1; |
570d7624 | 3780 | #ifdef VMS |
5e570b75 | 3781 | unsigned char *fname = 0; /* If non-0, original filename (must rename) */ |
570d7624 | 3782 | #endif /* VMS */ |
3eac9910 | 3783 | Lisp_Object handler; |
4ad827c5 | 3784 | Lisp_Object visit_file; |
d6a3cc15 RS |
3785 | Lisp_Object annotations; |
3786 | int visiting, quietly; | |
7204a979 | 3787 | struct gcpro gcpro1, gcpro2, gcpro3, gcpro4, gcpro5; |
6fc6f94b | 3788 | struct buffer *given_buffer; |
5e570b75 | 3789 | #ifdef DOS_NT |
4c3c22f3 RS |
3790 | int buffer_file_type |
3791 | = NILP (current_buffer->buffer_file_type) ? O_TEXT : O_BINARY; | |
5e570b75 | 3792 | #endif /* DOS_NT */ |
6fdaa9a0 | 3793 | struct coding_system coding; |
570d7624 | 3794 | |
95385625 RS |
3795 | if (current_buffer->base_buffer && ! NILP (visit)) |
3796 | error ("Cannot do file visiting in an indirect buffer"); | |
3797 | ||
561cb8e1 | 3798 | if (!NILP (start) && !STRINGP (start)) |
570d7624 JB |
3799 | validate_region (&start, &end); |
3800 | ||
115af127 | 3801 | GCPRO4 (start, filename, visit, lockname); |
cdfb0f1d KH |
3802 | |
3803 | /* Decide the coding-system to be encoded to. */ | |
3804 | { | |
3805 | Lisp_Object val; | |
3806 | ||
3807 | if (auto_saving || NILP (current_buffer->enable_multibyte_characters)) | |
3808 | val = Qnil; | |
cdfb0f1d KH |
3809 | else if (!NILP (Vcoding_system_for_write)) |
3810 | val = Vcoding_system_for_write; | |
3811 | else if (!NILP (Flocal_variable_if_set_p (Qbuffer_file_coding_system, | |
3812 | Qnil))) | |
3813 | val = Fsymbol_value (Qbuffer_file_coding_system); | |
3814 | else | |
3815 | { | |
3816 | Lisp_Object args[7], coding_systems; | |
3817 | ||
3818 | args[0] = Qwrite_region, args[1] = start, args[2] = end, | |
3819 | args[3] = filename, args[4] = append, args[5] = visit, | |
3820 | args[6] = lockname; | |
3821 | coding_systems = Ffind_coding_system (7, args); | |
3822 | val = (CONSP (coding_systems) | |
3823 | ? XCONS (coding_systems)->cdr | |
115af127 | 3824 | : current_buffer->buffer_file_coding_system); |
cdfb0f1d KH |
3825 | } |
3826 | setup_coding_system (Fcheck_coding_system (val), &coding); | |
3827 | if (!STRINGP (start) && !NILP (current_buffer->selective_display)) | |
3828 | coding.selective = 1; | |
3829 | #ifdef DOS_NT | |
3830 | if (!NILP (current_buffer->buffer_file_type)) | |
3831 | coding.eol_type = CODING_EOL_LF; | |
3832 | #endif /* DOS_NT */ | |
3833 | } | |
3834 | ||
570d7624 | 3835 | filename = Fexpand_file_name (filename, Qnil); |
561cb8e1 | 3836 | if (STRINGP (visit)) |
e5176bae | 3837 | visit_file = Fexpand_file_name (visit, Qnil); |
4ad827c5 RS |
3838 | else |
3839 | visit_file = filename; | |
1a04498e | 3840 | UNGCPRO; |
4ad827c5 | 3841 | |
561cb8e1 | 3842 | visiting = (EQ (visit, Qt) || STRINGP (visit)); |
d6a3cc15 RS |
3843 | quietly = !NILP (visit); |
3844 | ||
3845 | annotations = Qnil; | |
3846 | ||
7204a979 RS |
3847 | if (NILP (lockname)) |
3848 | lockname = visit_file; | |
3849 | ||
3850 | GCPRO5 (start, filename, annotations, visit_file, lockname); | |
570d7624 | 3851 | |
32f4334d RS |
3852 | /* If the file name has special constructs in it, |
3853 | call the corresponding file handler. */ | |
49307295 | 3854 | handler = Ffind_file_name_handler (filename, Qwrite_region); |
b56ad927 | 3855 | /* If FILENAME has no handler, see if VISIT has one. */ |
93c30b5f | 3856 | if (NILP (handler) && STRINGP (visit)) |
199607e4 | 3857 | handler = Ffind_file_name_handler (visit, Qwrite_region); |
3eac9910 | 3858 | |
32f4334d RS |
3859 | if (!NILP (handler)) |
3860 | { | |
32f4334d | 3861 | Lisp_Object val; |
51cf6d37 RS |
3862 | val = call6 (handler, Qwrite_region, start, end, |
3863 | filename, append, visit); | |
32f4334d | 3864 | |
d6a3cc15 | 3865 | if (visiting) |
32f4334d | 3866 | { |
95385625 | 3867 | SAVE_MODIFF = MODIFF; |
2acfd7ae | 3868 | XSETFASTINT (current_buffer->save_length, Z - BEG); |
3b7792ed | 3869 | current_buffer->filename = visit_file; |
32f4334d | 3870 | } |
09121adc | 3871 | UNGCPRO; |
32f4334d RS |
3872 | return val; |
3873 | } | |
3874 | ||
561cb8e1 RS |
3875 | /* Special kludge to simplify auto-saving. */ |
3876 | if (NILP (start)) | |
3877 | { | |
2acfd7ae KH |
3878 | XSETFASTINT (start, BEG); |
3879 | XSETFASTINT (end, Z); | |
561cb8e1 RS |
3880 | } |
3881 | ||
6fc6f94b RS |
3882 | record_unwind_protect (build_annotations_unwind, Fcurrent_buffer ()); |
3883 | count1 = specpdl_ptr - specpdl; | |
3884 | ||
3885 | given_buffer = current_buffer; | |
6fdaa9a0 | 3886 | annotations = build_annotations (start, end, coding.pre_write_conversion); |
6fc6f94b RS |
3887 | if (current_buffer != given_buffer) |
3888 | { | |
3cf29f61 RS |
3889 | XSETFASTINT (start, BEGV); |
3890 | XSETFASTINT (end, ZV); | |
6fc6f94b | 3891 | } |
d6a3cc15 | 3892 | |
570d7624 JB |
3893 | #ifdef CLASH_DETECTION |
3894 | if (!auto_saving) | |
84f6296a RS |
3895 | { |
3896 | /* If we've locked this file for some other buffer, | |
3897 | query before proceeding. */ | |
3898 | if (!visiting && EQ (Ffile_locked_p (lockname), Qt)) | |
3899 | call2 (intern ("ask-user-about-lock"), fn, Vuser_login_name); | |
3900 | ||
3901 | lock_file (lockname); | |
3902 | } | |
570d7624 JB |
3903 | #endif /* CLASH_DETECTION */ |
3904 | ||
09121adc | 3905 | fn = XSTRING (filename)->data; |
570d7624 | 3906 | desc = -1; |
265a9e55 | 3907 | if (!NILP (append)) |
5e570b75 | 3908 | #ifdef DOS_NT |
4c3c22f3 | 3909 | desc = open (fn, O_WRONLY | buffer_file_type); |
5e570b75 | 3910 | #else /* not DOS_NT */ |
570d7624 | 3911 | desc = open (fn, O_WRONLY); |
5e570b75 | 3912 | #endif /* not DOS_NT */ |
570d7624 | 3913 | |
ef429633 | 3914 | if (desc < 0 && (NILP (append) || errno == ENOENT) ) |
570d7624 | 3915 | #ifdef VMS |
5e570b75 | 3916 | if (auto_saving) /* Overwrite any previous version of autosave file */ |
570d7624 | 3917 | { |
5e570b75 | 3918 | vms_truncate (fn); /* if fn exists, truncate to zero length */ |
570d7624 JB |
3919 | desc = open (fn, O_RDWR); |
3920 | if (desc < 0) | |
561cb8e1 | 3921 | desc = creat_copy_attrs (STRINGP (current_buffer->filename) |
b72dea2a JB |
3922 | ? XSTRING (current_buffer->filename)->data : 0, |
3923 | fn); | |
570d7624 | 3924 | } |
5e570b75 | 3925 | else /* Write to temporary name and rename if no errors */ |
570d7624 JB |
3926 | { |
3927 | Lisp_Object temp_name; | |
3928 | temp_name = Ffile_name_directory (filename); | |
3929 | ||
265a9e55 | 3930 | if (!NILP (temp_name)) |
570d7624 JB |
3931 | { |
3932 | temp_name = Fmake_temp_name (concat2 (temp_name, | |
3933 | build_string ("$$SAVE$$"))); | |
3934 | fname = XSTRING (filename)->data; | |
3935 | fn = XSTRING (temp_name)->data; | |
3936 | desc = creat_copy_attrs (fname, fn); | |
3937 | if (desc < 0) | |
3938 | { | |
3939 | /* If we can't open the temporary file, try creating a new | |
3940 | version of the original file. VMS "creat" creates a | |
3941 | new version rather than truncating an existing file. */ | |
3942 | fn = fname; | |
3943 | fname = 0; | |
3944 | desc = creat (fn, 0666); | |
3945 | #if 0 /* This can clobber an existing file and fail to replace it, | |
3946 | if the user runs out of space. */ | |
3947 | if (desc < 0) | |
3948 | { | |
3949 | /* We can't make a new version; | |
3950 | try to truncate and rewrite existing version if any. */ | |
3951 | vms_truncate (fn); | |
3952 | desc = open (fn, O_RDWR); | |
3953 | } | |
3954 | #endif | |
3955 | } | |
3956 | } | |
3957 | else | |
3958 | desc = creat (fn, 0666); | |
3959 | } | |
3960 | #else /* not VMS */ | |
5e570b75 | 3961 | #ifdef DOS_NT |
199607e4 RS |
3962 | desc = open (fn, |
3963 | O_WRONLY | O_TRUNC | O_CREAT | buffer_file_type, | |
4c3c22f3 | 3964 | S_IREAD | S_IWRITE); |
5e570b75 | 3965 | #else /* not DOS_NT */ |
570d7624 | 3966 | desc = creat (fn, auto_saving ? auto_save_mode_bits : 0666); |
5e570b75 | 3967 | #endif /* not DOS_NT */ |
570d7624 JB |
3968 | #endif /* not VMS */ |
3969 | ||
09121adc RS |
3970 | UNGCPRO; |
3971 | ||
570d7624 JB |
3972 | if (desc < 0) |
3973 | { | |
3974 | #ifdef CLASH_DETECTION | |
3975 | save_errno = errno; | |
7204a979 | 3976 | if (!auto_saving) unlock_file (lockname); |
570d7624 JB |
3977 | errno = save_errno; |
3978 | #endif /* CLASH_DETECTION */ | |
3979 | report_file_error ("Opening output file", Fcons (filename, Qnil)); | |
3980 | } | |
3981 | ||
3982 | record_unwind_protect (close_file_unwind, make_number (desc)); | |
3983 | ||
265a9e55 | 3984 | if (!NILP (append)) |
570d7624 JB |
3985 | if (lseek (desc, 0, 2) < 0) |
3986 | { | |
3987 | #ifdef CLASH_DETECTION | |
7204a979 | 3988 | if (!auto_saving) unlock_file (lockname); |
570d7624 JB |
3989 | #endif /* CLASH_DETECTION */ |
3990 | report_file_error ("Lseek error", Fcons (filename, Qnil)); | |
3991 | } | |
3992 | ||
3993 | #ifdef VMS | |
3994 | /* | |
3995 | * Kludge Warning: The VMS C RTL likes to insert carriage returns | |
3996 | * if we do writes that don't end with a carriage return. Furthermore | |
3997 | * it cannot handle writes of more then 16K. The modified | |
3998 | * version of "sys_write" in SYSDEP.C (see comment there) copes with | |
3999 | * this EXCEPT for the last record (iff it doesn't end with a carriage | |
4000 | * return). This implies that if your buffer doesn't end with a carriage | |
4001 | * return, you get one free... tough. However it also means that if | |
4002 | * we make two calls to sys_write (a la the following code) you can | |
4003 | * get one at the gap as well. The easiest way to fix this (honest) | |
4004 | * is to move the gap to the next newline (or the end of the buffer). | |
4005 | * Thus this change. | |
4006 | * | |
4007 | * Yech! | |
4008 | */ | |
4009 | if (GPT > BEG && GPT_ADDR[-1] != '\n') | |
4010 | move_gap (find_next_newline (GPT, 1)); | |
cdfb0f1d KH |
4011 | #else |
4012 | /* Whether VMS or not, we must move the gap to the next of newline | |
4013 | when we must put designation sequences at beginning of line. */ | |
4014 | if (INTEGERP (start) | |
4015 | && coding.type == coding_type_iso2022 | |
4016 | && coding.flags & CODING_FLAG_ISO_DESIGNATE_AT_BOL | |
4017 | && GPT > BEG && GPT_ADDR[-1] != '\n') | |
4018 | move_gap (find_next_newline (GPT, 1)); | |
570d7624 JB |
4019 | #endif |
4020 | ||
4021 | failure = 0; | |
4022 | immediate_quit = 1; | |
4023 | ||
561cb8e1 | 4024 | if (STRINGP (start)) |
570d7624 | 4025 | { |
d6a3cc15 | 4026 | failure = 0 > a_write (desc, XSTRING (start)->data, |
6fdaa9a0 | 4027 | XSTRING (start)->size, 0, &annotations, &coding); |
570d7624 JB |
4028 | save_errno = errno; |
4029 | } | |
4030 | else if (XINT (start) != XINT (end)) | |
4031 | { | |
c975dd7a | 4032 | int nwritten = 0; |
570d7624 JB |
4033 | if (XINT (start) < GPT) |
4034 | { | |
4035 | register int end1 = XINT (end); | |
4036 | tem = XINT (start); | |
6fdaa9a0 KH |
4037 | failure = 0 > a_write (desc, POS_ADDR (tem), |
4038 | min (GPT, end1) - tem, tem, &annotations, | |
4039 | &coding); | |
c975dd7a | 4040 | nwritten += min (GPT, end1) - tem; |
570d7624 JB |
4041 | save_errno = errno; |
4042 | } | |
4043 | ||
4044 | if (XINT (end) > GPT && !failure) | |
4045 | { | |
4046 | tem = XINT (start); | |
4047 | tem = max (tem, GPT); | |
6fdaa9a0 KH |
4048 | failure = 0 > a_write (desc, POS_ADDR (tem), XINT (end) - tem, |
4049 | tem, &annotations, &coding); | |
c975dd7a | 4050 | nwritten += XINT (end) - tem; |
d6a3cc15 RS |
4051 | save_errno = errno; |
4052 | } | |
69f6e679 RS |
4053 | } |
4054 | else | |
4055 | { | |
4056 | /* If file was empty, still need to write the annotations */ | |
cdfb0f1d | 4057 | coding.last_block = 1; |
6fdaa9a0 KH |
4058 | failure = 0 > a_write (desc, "", 0, XINT (start), &annotations, &coding); |
4059 | save_errno = errno; | |
4060 | } | |
4061 | ||
4062 | if (coding.require_flushing) | |
4063 | { | |
4064 | /* We have to flush out a data. */ | |
4065 | coding.last_block = 1; | |
4066 | failure = 0 > e_write (desc, "", 0, &coding); | |
69f6e679 | 4067 | save_errno = errno; |
570d7624 JB |
4068 | } |
4069 | ||
4070 | immediate_quit = 0; | |
4071 | ||
6e23c83e | 4072 | #ifdef HAVE_FSYNC |
570d7624 JB |
4073 | /* Note fsync appears to change the modtime on BSD4.2 (both vax and sun). |
4074 | Disk full in NFS may be reported here. */ | |
1daffa1c RS |
4075 | /* mib says that closing the file will try to write as fast as NFS can do |
4076 | it, and that means the fsync here is not crucial for autosave files. */ | |
4077 | if (!auto_saving && fsync (desc) < 0) | |
cb33c142 KH |
4078 | { |
4079 | /* If fsync fails with EINTR, don't treat that as serious. */ | |
4080 | if (errno != EINTR) | |
4081 | failure = 1, save_errno = errno; | |
4082 | } | |
570d7624 JB |
4083 | #endif |
4084 | ||
199607e4 | 4085 | /* Spurious "file has changed on disk" warnings have been |
570d7624 JB |
4086 | observed on Suns as well. |
4087 | It seems that `close' can change the modtime, under nfs. | |
4088 | ||
4089 | (This has supposedly been fixed in Sunos 4, | |
4090 | but who knows about all the other machines with NFS?) */ | |
4091 | #if 0 | |
4092 | ||
4093 | /* On VMS and APOLLO, must do the stat after the close | |
4094 | since closing changes the modtime. */ | |
4095 | #ifndef VMS | |
4096 | #ifndef APOLLO | |
4097 | /* Recall that #if defined does not work on VMS. */ | |
4098 | #define FOO | |
4099 | fstat (desc, &st); | |
4100 | #endif | |
4101 | #endif | |
4102 | #endif | |
4103 | ||
4104 | /* NFS can report a write failure now. */ | |
4105 | if (close (desc) < 0) | |
4106 | failure = 1, save_errno = errno; | |
4107 | ||
4108 | #ifdef VMS | |
4109 | /* If we wrote to a temporary name and had no errors, rename to real name. */ | |
4110 | if (fname) | |
4111 | { | |
4112 | if (!failure) | |
4113 | failure = (rename (fn, fname) != 0), save_errno = errno; | |
4114 | fn = fname; | |
4115 | } | |
4116 | #endif /* VMS */ | |
4117 | ||
4118 | #ifndef FOO | |
4119 | stat (fn, &st); | |
4120 | #endif | |
6fc6f94b RS |
4121 | /* Discard the unwind protect for close_file_unwind. */ |
4122 | specpdl_ptr = specpdl + count1; | |
4123 | /* Restore the original current buffer. */ | |
98295b48 | 4124 | visit_file = unbind_to (count, visit_file); |
570d7624 JB |
4125 | |
4126 | #ifdef CLASH_DETECTION | |
4127 | if (!auto_saving) | |
7204a979 | 4128 | unlock_file (lockname); |
570d7624 JB |
4129 | #endif /* CLASH_DETECTION */ |
4130 | ||
4131 | /* Do this before reporting IO error | |
4132 | to avoid a "file has changed on disk" warning on | |
4133 | next attempt to save. */ | |
d6a3cc15 | 4134 | if (visiting) |
570d7624 JB |
4135 | current_buffer->modtime = st.st_mtime; |
4136 | ||
4137 | if (failure) | |
ce97267f | 4138 | error ("IO error writing %s: %s", fn, strerror (save_errno)); |
570d7624 | 4139 | |
d6a3cc15 | 4140 | if (visiting) |
570d7624 | 4141 | { |
95385625 | 4142 | SAVE_MODIFF = MODIFF; |
2acfd7ae | 4143 | XSETFASTINT (current_buffer->save_length, Z - BEG); |
3b7792ed | 4144 | current_buffer->filename = visit_file; |
f4226e89 | 4145 | update_mode_lines++; |
570d7624 | 4146 | } |
d6a3cc15 | 4147 | else if (quietly) |
570d7624 JB |
4148 | return Qnil; |
4149 | ||
4150 | if (!auto_saving) | |
3b7792ed | 4151 | message ("Wrote %s", XSTRING (visit_file)->data); |
570d7624 JB |
4152 | |
4153 | return Qnil; | |
4154 | } | |
4155 | ||
d6a3cc15 RS |
4156 | Lisp_Object merge (); |
4157 | ||
4158 | DEFUN ("car-less-than-car", Fcar_less_than_car, Scar_less_than_car, 2, 2, 0, | |
2ba0ccff | 4159 | "Return t if (car A) is numerically less than (car B).") |
d6a3cc15 RS |
4160 | (a, b) |
4161 | Lisp_Object a, b; | |
4162 | { | |
4163 | return Flss (Fcar (a), Fcar (b)); | |
4164 | } | |
4165 | ||
4166 | /* Build the complete list of annotations appropriate for writing out | |
4167 | the text between START and END, by calling all the functions in | |
6fc6f94b RS |
4168 | write-region-annotate-functions and merging the lists they return. |
4169 | If one of these functions switches to a different buffer, we assume | |
4170 | that buffer contains altered text. Therefore, the caller must | |
4171 | make sure to restore the current buffer in all cases, | |
4172 | as save-excursion would do. */ | |
d6a3cc15 RS |
4173 | |
4174 | static Lisp_Object | |
6fdaa9a0 KH |
4175 | build_annotations (start, end, pre_write_conversion) |
4176 | Lisp_Object start, end, pre_write_conversion; | |
d6a3cc15 RS |
4177 | { |
4178 | Lisp_Object annotations; | |
4179 | Lisp_Object p, res; | |
4180 | struct gcpro gcpro1, gcpro2; | |
0a20b684 RS |
4181 | Lisp_Object original_buffer; |
4182 | ||
4183 | XSETBUFFER (original_buffer, current_buffer); | |
d6a3cc15 RS |
4184 | |
4185 | annotations = Qnil; | |
4186 | p = Vwrite_region_annotate_functions; | |
4187 | GCPRO2 (annotations, p); | |
4188 | while (!NILP (p)) | |
4189 | { | |
6fc6f94b RS |
4190 | struct buffer *given_buffer = current_buffer; |
4191 | Vwrite_region_annotations_so_far = annotations; | |
d6a3cc15 | 4192 | res = call2 (Fcar (p), start, end); |
6fc6f94b RS |
4193 | /* If the function makes a different buffer current, |
4194 | assume that means this buffer contains altered text to be output. | |
4195 | Reset START and END from the buffer bounds | |
4196 | and discard all previous annotations because they should have | |
4197 | been dealt with by this function. */ | |
4198 | if (current_buffer != given_buffer) | |
4199 | { | |
3cf29f61 RS |
4200 | XSETFASTINT (start, BEGV); |
4201 | XSETFASTINT (end, ZV); | |
6fc6f94b RS |
4202 | annotations = Qnil; |
4203 | } | |
d6a3cc15 RS |
4204 | Flength (res); /* Check basic validity of return value */ |
4205 | annotations = merge (annotations, res, Qcar_less_than_car); | |
4206 | p = Fcdr (p); | |
4207 | } | |
0d420e88 BG |
4208 | |
4209 | /* Now do the same for annotation functions implied by the file-format */ | |
4210 | if (auto_saving && (!EQ (Vauto_save_file_format, Qt))) | |
4211 | p = Vauto_save_file_format; | |
4212 | else | |
4213 | p = current_buffer->file_format; | |
4214 | while (!NILP (p)) | |
4215 | { | |
4216 | struct buffer *given_buffer = current_buffer; | |
4217 | Vwrite_region_annotations_so_far = annotations; | |
0a20b684 RS |
4218 | res = call4 (Qformat_annotate_function, Fcar (p), start, end, |
4219 | original_buffer); | |
0d420e88 BG |
4220 | if (current_buffer != given_buffer) |
4221 | { | |
3cf29f61 RS |
4222 | XSETFASTINT (start, BEGV); |
4223 | XSETFASTINT (end, ZV); | |
0d420e88 BG |
4224 | annotations = Qnil; |
4225 | } | |
4226 | Flength (res); | |
4227 | annotations = merge (annotations, res, Qcar_less_than_car); | |
4228 | p = Fcdr (p); | |
4229 | } | |
6fdaa9a0 KH |
4230 | |
4231 | /* At last, do the same for the function PRE_WRITE_CONVERSION | |
4232 | implied by the current coding-system. */ | |
4233 | if (!NILP (pre_write_conversion)) | |
4234 | { | |
4235 | struct buffer *given_buffer = current_buffer; | |
4236 | Vwrite_region_annotations_so_far = annotations; | |
4237 | res = call2 (pre_write_conversion, start, end); | |
6fdaa9a0 | 4238 | Flength (res); |
cdfb0f1d KH |
4239 | annotations = (current_buffer != given_buffer |
4240 | ? res | |
4241 | : merge (annotations, res, Qcar_less_than_car)); | |
6fdaa9a0 KH |
4242 | } |
4243 | ||
d6a3cc15 RS |
4244 | UNGCPRO; |
4245 | return annotations; | |
4246 | } | |
4247 | ||
4248 | /* Write to descriptor DESC the LEN characters starting at ADDR, | |
4249 | assuming they start at position POS in the buffer. | |
4250 | Intersperse with them the annotations from *ANNOT | |
4251 | (those which fall within the range of positions POS to POS + LEN), | |
4252 | each at its appropriate position. | |
4253 | ||
4254 | Modify *ANNOT by discarding elements as we output them. | |
4255 | The return value is negative in case of system call failure. */ | |
4256 | ||
4257 | int | |
6fdaa9a0 | 4258 | a_write (desc, addr, len, pos, annot, coding) |
d6a3cc15 RS |
4259 | int desc; |
4260 | register char *addr; | |
4261 | register int len; | |
4262 | int pos; | |
4263 | Lisp_Object *annot; | |
6fdaa9a0 | 4264 | struct coding_system *coding; |
d6a3cc15 RS |
4265 | { |
4266 | Lisp_Object tem; | |
4267 | int nextpos; | |
4268 | int lastpos = pos + len; | |
4269 | ||
eb15aa18 | 4270 | while (NILP (*annot) || CONSP (*annot)) |
d6a3cc15 RS |
4271 | { |
4272 | tem = Fcar_safe (Fcar (*annot)); | |
4273 | if (INTEGERP (tem) && XINT (tem) >= pos && XFASTINT (tem) <= lastpos) | |
4274 | nextpos = XFASTINT (tem); | |
4275 | else | |
6fdaa9a0 | 4276 | return e_write (desc, addr, lastpos - pos, coding); |
d6a3cc15 RS |
4277 | if (nextpos > pos) |
4278 | { | |
6fdaa9a0 | 4279 | if (0 > e_write (desc, addr, nextpos - pos, coding)) |
d6a3cc15 RS |
4280 | return -1; |
4281 | addr += nextpos - pos; | |
4282 | pos = nextpos; | |
4283 | } | |
4284 | tem = Fcdr (Fcar (*annot)); | |
4285 | if (STRINGP (tem)) | |
4286 | { | |
6fdaa9a0 KH |
4287 | if (0 > e_write (desc, XSTRING (tem)->data, XSTRING (tem)->size, |
4288 | coding)) | |
d6a3cc15 RS |
4289 | return -1; |
4290 | } | |
4291 | *annot = Fcdr (*annot); | |
4292 | } | |
4293 | } | |
4294 | ||
6fdaa9a0 KH |
4295 | #ifndef WRITE_BUF_SIZE |
4296 | #define WRITE_BUF_SIZE (16 * 1024) | |
4297 | #endif | |
4298 | ||
570d7624 | 4299 | int |
6fdaa9a0 | 4300 | e_write (desc, addr, len, coding) |
570d7624 JB |
4301 | int desc; |
4302 | register char *addr; | |
4303 | register int len; | |
6fdaa9a0 | 4304 | struct coding_system *coding; |
570d7624 | 4305 | { |
6fdaa9a0 KH |
4306 | char buf[WRITE_BUF_SIZE]; |
4307 | int produced, consumed; | |
570d7624 | 4308 | |
6fdaa9a0 KH |
4309 | /* We used to have a code for handling selective display here. But, |
4310 | now it is handled within encode_coding. */ | |
4311 | while (1) | |
570d7624 | 4312 | { |
6fdaa9a0 KH |
4313 | produced = encode_coding (coding, addr, buf, len, WRITE_BUF_SIZE, |
4314 | &consumed); | |
4315 | len -= consumed, addr += consumed; | |
6fdaa9a0 KH |
4316 | if (produced > 0) |
4317 | { | |
4318 | produced -= write (desc, buf, produced); | |
4319 | if (produced) return -1; | |
570d7624 | 4320 | } |
6fdaa9a0 KH |
4321 | if (len <= 0) |
4322 | break; | |
570d7624 JB |
4323 | } |
4324 | return 0; | |
4325 | } | |
4326 | ||
4327 | DEFUN ("verify-visited-file-modtime", Fverify_visited_file_modtime, | |
4328 | Sverify_visited_file_modtime, 1, 1, 0, | |
4329 | "Return t if last mod time of BUF's visited file matches what BUF records.\n\ | |
4330 | This means that the file has not been changed since it was visited or saved.") | |
4331 | (buf) | |
4332 | Lisp_Object buf; | |
4333 | { | |
4334 | struct buffer *b; | |
4335 | struct stat st; | |
32f4334d | 4336 | Lisp_Object handler; |
570d7624 JB |
4337 | |
4338 | CHECK_BUFFER (buf, 0); | |
4339 | b = XBUFFER (buf); | |
4340 | ||
93c30b5f | 4341 | if (!STRINGP (b->filename)) return Qt; |
570d7624 JB |
4342 | if (b->modtime == 0) return Qt; |
4343 | ||
32f4334d RS |
4344 | /* If the file name has special constructs in it, |
4345 | call the corresponding file handler. */ | |
49307295 KH |
4346 | handler = Ffind_file_name_handler (b->filename, |
4347 | Qverify_visited_file_modtime); | |
32f4334d | 4348 | if (!NILP (handler)) |
09121adc | 4349 | return call2 (handler, Qverify_visited_file_modtime, buf); |
32f4334d | 4350 | |
570d7624 JB |
4351 | if (stat (XSTRING (b->filename)->data, &st) < 0) |
4352 | { | |
4353 | /* If the file doesn't exist now and didn't exist before, | |
4354 | we say that it isn't modified, provided the error is a tame one. */ | |
4355 | if (errno == ENOENT || errno == EACCES || errno == ENOTDIR) | |
4356 | st.st_mtime = -1; | |
4357 | else | |
4358 | st.st_mtime = 0; | |
4359 | } | |
4360 | if (st.st_mtime == b->modtime | |
4361 | /* If both are positive, accept them if they are off by one second. */ | |
4362 | || (st.st_mtime > 0 && b->modtime > 0 | |
4363 | && (st.st_mtime == b->modtime + 1 | |
4364 | || st.st_mtime == b->modtime - 1))) | |
4365 | return Qt; | |
4366 | return Qnil; | |
4367 | } | |
4368 | ||
4369 | DEFUN ("clear-visited-file-modtime", Fclear_visited_file_modtime, | |
4370 | Sclear_visited_file_modtime, 0, 0, 0, | |
4371 | "Clear out records of last mod time of visited file.\n\ | |
4372 | Next attempt to save will certainly not complain of a discrepancy.") | |
4373 | () | |
4374 | { | |
4375 | current_buffer->modtime = 0; | |
4376 | return Qnil; | |
4377 | } | |
4378 | ||
f5d5eccf RS |
4379 | DEFUN ("visited-file-modtime", Fvisited_file_modtime, |
4380 | Svisited_file_modtime, 0, 0, 0, | |
4381 | "Return the current buffer's recorded visited file modification time.\n\ | |
4382 | The value is a list of the form (HIGH . LOW), like the time values\n\ | |
4383 | that `file-attributes' returns.") | |
4384 | () | |
4385 | { | |
b50536bb | 4386 | return long_to_cons ((unsigned long) current_buffer->modtime); |
f5d5eccf RS |
4387 | } |
4388 | ||
570d7624 | 4389 | DEFUN ("set-visited-file-modtime", Fset_visited_file_modtime, |
f5d5eccf | 4390 | Sset_visited_file_modtime, 0, 1, 0, |
570d7624 JB |
4391 | "Update buffer's recorded modification time from the visited file's time.\n\ |
4392 | Useful if the buffer was not read from the file normally\n\ | |
f5d5eccf RS |
4393 | or if the file itself has been changed for some known benign reason.\n\ |
4394 | An argument specifies the modification time value to use\n\ | |
4395 | \(instead of that of the visited file), in the form of a list\n\ | |
4396 | \(HIGH . LOW) or (HIGH LOW).") | |
4397 | (time_list) | |
4398 | Lisp_Object time_list; | |
570d7624 | 4399 | { |
f5d5eccf RS |
4400 | if (!NILP (time_list)) |
4401 | current_buffer->modtime = cons_to_long (time_list); | |
4402 | else | |
4403 | { | |
4404 | register Lisp_Object filename; | |
4405 | struct stat st; | |
4406 | Lisp_Object handler; | |
570d7624 | 4407 | |
f5d5eccf | 4408 | filename = Fexpand_file_name (current_buffer->filename, Qnil); |
32f4334d | 4409 | |
f5d5eccf RS |
4410 | /* If the file name has special constructs in it, |
4411 | call the corresponding file handler. */ | |
49307295 | 4412 | handler = Ffind_file_name_handler (filename, Qset_visited_file_modtime); |
f5d5eccf | 4413 | if (!NILP (handler)) |
caf3c431 | 4414 | /* The handler can find the file name the same way we did. */ |
76c881b0 | 4415 | return call2 (handler, Qset_visited_file_modtime, Qnil); |
f5d5eccf RS |
4416 | else if (stat (XSTRING (filename)->data, &st) >= 0) |
4417 | current_buffer->modtime = st.st_mtime; | |
4418 | } | |
570d7624 JB |
4419 | |
4420 | return Qnil; | |
4421 | } | |
4422 | \f | |
4423 | Lisp_Object | |
4424 | auto_save_error () | |
4425 | { | |
570d7624 | 4426 | ring_bell (); |
1a04498e | 4427 | message ("Autosaving...error for %s", XSTRING (current_buffer->name)->data); |
de49a6d3 | 4428 | Fsleep_for (make_number (1), Qnil); |
1a04498e | 4429 | message ("Autosaving...error!for %s", XSTRING (current_buffer->name)->data); |
de49a6d3 | 4430 | Fsleep_for (make_number (1), Qnil); |
1a04498e | 4431 | message ("Autosaving...error for %s", XSTRING (current_buffer->name)->data); |
de49a6d3 | 4432 | Fsleep_for (make_number (1), Qnil); |
570d7624 JB |
4433 | return Qnil; |
4434 | } | |
4435 | ||
4436 | Lisp_Object | |
4437 | auto_save_1 () | |
4438 | { | |
4439 | unsigned char *fn; | |
4440 | struct stat st; | |
4441 | ||
4442 | /* Get visited file's mode to become the auto save file's mode. */ | |
4443 | if (stat (XSTRING (current_buffer->filename)->data, &st) >= 0) | |
4444 | /* But make sure we can overwrite it later! */ | |
4445 | auto_save_mode_bits = st.st_mode | 0600; | |
4446 | else | |
4447 | auto_save_mode_bits = 0666; | |
4448 | ||
4449 | return | |
4450 | Fwrite_region (Qnil, Qnil, | |
4451 | current_buffer->auto_save_file_name, | |
115af127 | 4452 | Qnil, Qlambda, Qnil); |
570d7624 JB |
4453 | } |
4454 | ||
e54d3b5d | 4455 | static Lisp_Object |
1b335d29 RS |
4456 | do_auto_save_unwind (stream) /* used as unwind-protect function */ |
4457 | Lisp_Object stream; | |
e54d3b5d | 4458 | { |
3be3c08e | 4459 | auto_saving = 0; |
1b335d29 RS |
4460 | if (!NILP (stream)) |
4461 | fclose ((FILE *) (XFASTINT (XCONS (stream)->car) << 16 | |
4462 | | XFASTINT (XCONS (stream)->cdr))); | |
e54d3b5d RS |
4463 | return Qnil; |
4464 | } | |
4465 | ||
570d7624 JB |
4466 | DEFUN ("do-auto-save", Fdo_auto_save, Sdo_auto_save, 0, 2, "", |
4467 | "Auto-save all buffers that need it.\n\ | |
4468 | This is all buffers that have auto-saving enabled\n\ | |
4469 | and are changed since last auto-saved.\n\ | |
4470 | Auto-saving writes the buffer into a file\n\ | |
4471 | so that your editing is not lost if the system crashes.\n\ | |
012d4cdc RS |
4472 | This file is not the file you visited; that changes only when you save.\n\ |
4473 | Normally we run the normal hook `auto-save-hook' before saving.\n\n\ | |
3b7f6e60 EN |
4474 | A non-nil NO-MESSAGE argument means do not print any message if successful.\n\ |
4475 | A non-nil CURRENT-ONLY argument means save only current buffer.") | |
17857782 JB |
4476 | (no_message, current_only) |
4477 | Lisp_Object no_message, current_only; | |
570d7624 JB |
4478 | { |
4479 | struct buffer *old = current_buffer, *b; | |
4480 | Lisp_Object tail, buf; | |
4481 | int auto_saved = 0; | |
4482 | char *omessage = echo_area_glyphs; | |
f05b275b | 4483 | int omessage_length = echo_area_glyphs_length; |
f14b1c68 | 4484 | int do_handled_files; |
ff4c9993 | 4485 | Lisp_Object oquit; |
1b335d29 RS |
4486 | FILE *stream; |
4487 | Lisp_Object lispstream; | |
e54d3b5d RS |
4488 | int count = specpdl_ptr - specpdl; |
4489 | int *ptr; | |
ff4c9993 RS |
4490 | |
4491 | /* Ordinarily don't quit within this function, | |
4492 | but don't make it impossible to quit (in case we get hung in I/O). */ | |
4493 | oquit = Vquit_flag; | |
4494 | Vquit_flag = Qnil; | |
570d7624 JB |
4495 | |
4496 | /* No GCPRO needed, because (when it matters) all Lisp_Object variables | |
4497 | point to non-strings reached from Vbuffer_alist. */ | |
4498 | ||
570d7624 | 4499 | if (minibuf_level) |
17857782 | 4500 | no_message = Qt; |
570d7624 | 4501 | |
265a9e55 | 4502 | if (!NILP (Vrun_hooks)) |
570d7624 JB |
4503 | call1 (Vrun_hooks, intern ("auto-save-hook")); |
4504 | ||
e54d3b5d RS |
4505 | if (STRINGP (Vauto_save_list_file_name)) |
4506 | { | |
258fd2cb RS |
4507 | Lisp_Object listfile; |
4508 | listfile = Fexpand_file_name (Vauto_save_list_file_name, Qnil); | |
1b335d29 RS |
4509 | stream = fopen (XSTRING (listfile)->data, "w"); |
4510 | ||
4511 | /* Arrange to close that file whether or not we get an error. | |
4512 | Also reset auto_saving to 0. */ | |
4513 | lispstream = Fcons (Qnil, Qnil); | |
4514 | XSETFASTINT (XCONS (lispstream)->car, (EMACS_UINT)stream >> 16); | |
4515 | XSETFASTINT (XCONS (lispstream)->cdr, (EMACS_UINT)stream & 0xffff); | |
e54d3b5d RS |
4516 | } |
4517 | else | |
1b335d29 RS |
4518 | { |
4519 | stream = NULL; | |
4520 | lispstream = Qnil; | |
4521 | } | |
199607e4 | 4522 | |
1b335d29 | 4523 | record_unwind_protect (do_auto_save_unwind, lispstream); |
e54d3b5d | 4524 | |
3be3c08e RS |
4525 | auto_saving = 1; |
4526 | ||
f14b1c68 JB |
4527 | /* First, save all files which don't have handlers. If Emacs is |
4528 | crashing, the handlers may tweak what is causing Emacs to crash | |
4529 | in the first place, and it would be a shame if Emacs failed to | |
4530 | autosave perfectly ordinary files because it couldn't handle some | |
4531 | ange-ftp'd file. */ | |
4532 | for (do_handled_files = 0; do_handled_files < 2; do_handled_files++) | |
41d86b13 | 4533 | for (tail = Vbuffer_alist; GC_CONSP (tail); tail = XCONS (tail)->cdr) |
f14b1c68 JB |
4534 | { |
4535 | buf = XCONS (XCONS (tail)->car)->cdr; | |
4536 | b = XBUFFER (buf); | |
199607e4 | 4537 | |
e54d3b5d | 4538 | /* Record all the buffers that have auto save mode |
258fd2cb RS |
4539 | in the special file that lists them. For each of these buffers, |
4540 | Record visited name (if any) and auto save name. */ | |
93c30b5f | 4541 | if (STRINGP (b->auto_save_file_name) |
1b335d29 | 4542 | && stream != NULL && do_handled_files == 0) |
e54d3b5d | 4543 | { |
258fd2cb RS |
4544 | if (!NILP (b->filename)) |
4545 | { | |
1b335d29 RS |
4546 | fwrite (XSTRING (b->filename)->data, 1, |
4547 | XSTRING (b->filename)->size, stream); | |
258fd2cb | 4548 | } |
1b335d29 RS |
4549 | putc ('\n', stream); |
4550 | fwrite (XSTRING (b->auto_save_file_name)->data, 1, | |
4551 | XSTRING (b->auto_save_file_name)->size, stream); | |
4552 | putc ('\n', stream); | |
e54d3b5d | 4553 | } |
17857782 | 4554 | |
f14b1c68 JB |
4555 | if (!NILP (current_only) |
4556 | && b != current_buffer) | |
4557 | continue; | |
e54d3b5d | 4558 | |
95385625 RS |
4559 | /* Don't auto-save indirect buffers. |
4560 | The base buffer takes care of it. */ | |
4561 | if (b->base_buffer) | |
4562 | continue; | |
4563 | ||
f14b1c68 JB |
4564 | /* Check for auto save enabled |
4565 | and file changed since last auto save | |
4566 | and file changed since last real save. */ | |
93c30b5f | 4567 | if (STRINGP (b->auto_save_file_name) |
95385625 | 4568 | && BUF_SAVE_MODIFF (b) < BUF_MODIFF (b) |
f14b1c68 | 4569 | && b->auto_save_modified < BUF_MODIFF (b) |
82c2d839 RS |
4570 | /* -1 means we've turned off autosaving for a while--see below. */ |
4571 | && XINT (b->save_length) >= 0 | |
f14b1c68 | 4572 | && (do_handled_files |
49307295 KH |
4573 | || NILP (Ffind_file_name_handler (b->auto_save_file_name, |
4574 | Qwrite_region)))) | |
f14b1c68 | 4575 | { |
b60247d9 RS |
4576 | EMACS_TIME before_time, after_time; |
4577 | ||
4578 | EMACS_GET_TIME (before_time); | |
4579 | ||
4580 | /* If we had a failure, don't try again for 20 minutes. */ | |
4581 | if (b->auto_save_failure_time >= 0 | |
4582 | && EMACS_SECS (before_time) - b->auto_save_failure_time < 1200) | |
4583 | continue; | |
4584 | ||
f14b1c68 JB |
4585 | if ((XFASTINT (b->save_length) * 10 |
4586 | > (BUF_Z (b) - BUF_BEG (b)) * 13) | |
4587 | /* A short file is likely to change a large fraction; | |
4588 | spare the user annoying messages. */ | |
4589 | && XFASTINT (b->save_length) > 5000 | |
4590 | /* These messages are frequent and annoying for `*mail*'. */ | |
4591 | && !EQ (b->filename, Qnil) | |
4592 | && NILP (no_message)) | |
4593 | { | |
4594 | /* It has shrunk too much; turn off auto-saving here. */ | |
4595 | message ("Buffer %s has shrunk a lot; auto save turned off there", | |
4596 | XSTRING (b->name)->data); | |
82c2d839 RS |
4597 | /* Turn off auto-saving until there's a real save, |
4598 | and prevent any more warnings. */ | |
46283abe | 4599 | XSETINT (b->save_length, -1); |
f14b1c68 JB |
4600 | Fsleep_for (make_number (1), Qnil); |
4601 | continue; | |
4602 | } | |
4603 | set_buffer_internal (b); | |
4604 | if (!auto_saved && NILP (no_message)) | |
4605 | message1 ("Auto-saving..."); | |
4606 | internal_condition_case (auto_save_1, Qt, auto_save_error); | |
4607 | auto_saved++; | |
4608 | b->auto_save_modified = BUF_MODIFF (b); | |
2acfd7ae | 4609 | XSETFASTINT (current_buffer->save_length, Z - BEG); |
f14b1c68 | 4610 | set_buffer_internal (old); |
b60247d9 RS |
4611 | |
4612 | EMACS_GET_TIME (after_time); | |
4613 | ||
4614 | /* If auto-save took more than 60 seconds, | |
4615 | assume it was an NFS failure that got a timeout. */ | |
4616 | if (EMACS_SECS (after_time) - EMACS_SECS (before_time) > 60) | |
4617 | b->auto_save_failure_time = EMACS_SECS (after_time); | |
f14b1c68 JB |
4618 | } |
4619 | } | |
570d7624 | 4620 | |
b67f2ca5 RS |
4621 | /* Prevent another auto save till enough input events come in. */ |
4622 | record_auto_save (); | |
570d7624 | 4623 | |
17857782 | 4624 | if (auto_saved && NILP (no_message)) |
f05b275b KH |
4625 | { |
4626 | if (omessage) | |
31f3d831 | 4627 | { |
22e59fa7 | 4628 | sit_for (1, 0, 0, 0, 0); |
31f3d831 KH |
4629 | message2 (omessage, omessage_length); |
4630 | } | |
f05b275b KH |
4631 | else |
4632 | message1 ("Auto-saving...done"); | |
4633 | } | |
570d7624 | 4634 | |
ff4c9993 RS |
4635 | Vquit_flag = oquit; |
4636 | ||
e54d3b5d | 4637 | unbind_to (count, Qnil); |
570d7624 JB |
4638 | return Qnil; |
4639 | } | |
4640 | ||
4641 | DEFUN ("set-buffer-auto-saved", Fset_buffer_auto_saved, | |
4642 | Sset_buffer_auto_saved, 0, 0, 0, | |
4643 | "Mark current buffer as auto-saved with its current text.\n\ | |
4644 | No auto-save file will be written until the buffer changes again.") | |
4645 | () | |
4646 | { | |
4647 | current_buffer->auto_save_modified = MODIFF; | |
2acfd7ae | 4648 | XSETFASTINT (current_buffer->save_length, Z - BEG); |
b60247d9 RS |
4649 | current_buffer->auto_save_failure_time = -1; |
4650 | return Qnil; | |
4651 | } | |
4652 | ||
4653 | DEFUN ("clear-buffer-auto-save-failure", Fclear_buffer_auto_save_failure, | |
4654 | Sclear_buffer_auto_save_failure, 0, 0, 0, | |
4655 | "Clear any record of a recent auto-save failure in the current buffer.") | |
4656 | () | |
4657 | { | |
4658 | current_buffer->auto_save_failure_time = -1; | |
570d7624 JB |
4659 | return Qnil; |
4660 | } | |
4661 | ||
4662 | DEFUN ("recent-auto-save-p", Frecent_auto_save_p, Srecent_auto_save_p, | |
4663 | 0, 0, 0, | |
4664 | "Return t if buffer has been auto-saved since last read in or saved.") | |
4665 | () | |
4666 | { | |
95385625 | 4667 | return (SAVE_MODIFF < current_buffer->auto_save_modified) ? Qt : Qnil; |
570d7624 JB |
4668 | } |
4669 | \f | |
4670 | /* Reading and completing file names */ | |
4671 | extern Lisp_Object Ffile_name_completion (), Ffile_name_all_completions (); | |
4672 | ||
6e710ae5 RS |
4673 | /* In the string VAL, change each $ to $$ and return the result. */ |
4674 | ||
4675 | static Lisp_Object | |
4676 | double_dollars (val) | |
4677 | Lisp_Object val; | |
4678 | { | |
4679 | register unsigned char *old, *new; | |
4680 | register int n; | |
4681 | int osize, count; | |
4682 | ||
4683 | osize = XSTRING (val)->size; | |
4684 | /* Quote "$" as "$$" to get it past substitute-in-file-name */ | |
4685 | for (n = osize, count = 0, old = XSTRING (val)->data; n > 0; n--) | |
4686 | if (*old++ == '$') count++; | |
4687 | if (count > 0) | |
4688 | { | |
4689 | old = XSTRING (val)->data; | |
4690 | val = Fmake_string (make_number (osize + count), make_number (0)); | |
4691 | new = XSTRING (val)->data; | |
4692 | for (n = osize; n > 0; n--) | |
4693 | if (*old != '$') | |
4694 | *new++ = *old++; | |
4695 | else | |
4696 | { | |
4697 | *new++ = '$'; | |
4698 | *new++ = '$'; | |
4699 | old++; | |
4700 | } | |
4701 | } | |
4702 | return val; | |
4703 | } | |
4704 | ||
570d7624 JB |
4705 | DEFUN ("read-file-name-internal", Fread_file_name_internal, Sread_file_name_internal, |
4706 | 3, 3, 0, | |
4707 | "Internal subroutine for read-file-name. Do not call this.") | |
4708 | (string, dir, action) | |
4709 | Lisp_Object string, dir, action; | |
4710 | /* action is nil for complete, t for return list of completions, | |
4711 | lambda for verify final value */ | |
4712 | { | |
4713 | Lisp_Object name, specdir, realdir, val, orig_string; | |
09121adc | 4714 | int changed; |
8ce069f5 | 4715 | struct gcpro gcpro1, gcpro2, gcpro3, gcpro4, gcpro5; |
09121adc | 4716 | |
58cc3710 RS |
4717 | CHECK_STRING (string, 0); |
4718 | ||
09121adc RS |
4719 | realdir = dir; |
4720 | name = string; | |
4721 | orig_string = Qnil; | |
4722 | specdir = Qnil; | |
4723 | changed = 0; | |
4724 | /* No need to protect ACTION--we only compare it with t and nil. */ | |
8ce069f5 | 4725 | GCPRO5 (string, realdir, name, specdir, orig_string); |
570d7624 JB |
4726 | |
4727 | if (XSTRING (string)->size == 0) | |
4728 | { | |
570d7624 | 4729 | if (EQ (action, Qlambda)) |
09121adc RS |
4730 | { |
4731 | UNGCPRO; | |
4732 | return Qnil; | |
4733 | } | |
570d7624 JB |
4734 | } |
4735 | else | |
4736 | { | |
4737 | orig_string = string; | |
4738 | string = Fsubstitute_in_file_name (string); | |
09121adc | 4739 | changed = NILP (Fstring_equal (string, orig_string)); |
570d7624 | 4740 | name = Ffile_name_nondirectory (string); |
09121adc RS |
4741 | val = Ffile_name_directory (string); |
4742 | if (! NILP (val)) | |
4743 | realdir = Fexpand_file_name (val, realdir); | |
570d7624 JB |
4744 | } |
4745 | ||
265a9e55 | 4746 | if (NILP (action)) |
570d7624 JB |
4747 | { |
4748 | specdir = Ffile_name_directory (string); | |
4749 | val = Ffile_name_completion (name, realdir); | |
09121adc | 4750 | UNGCPRO; |
93c30b5f | 4751 | if (!STRINGP (val)) |
570d7624 | 4752 | { |
09121adc | 4753 | if (changed) |
dbd04e01 | 4754 | return double_dollars (string); |
09121adc | 4755 | return val; |
570d7624 JB |
4756 | } |
4757 | ||
265a9e55 | 4758 | if (!NILP (specdir)) |
570d7624 JB |
4759 | val = concat2 (specdir, val); |
4760 | #ifndef VMS | |
6e710ae5 RS |
4761 | return double_dollars (val); |
4762 | #else /* not VMS */ | |
09121adc | 4763 | return val; |
6e710ae5 | 4764 | #endif /* not VMS */ |
570d7624 | 4765 | } |
09121adc | 4766 | UNGCPRO; |
570d7624 JB |
4767 | |
4768 | if (EQ (action, Qt)) | |
4769 | return Ffile_name_all_completions (name, realdir); | |
4770 | /* Only other case actually used is ACTION = lambda */ | |
4771 | #ifdef VMS | |
4772 | /* Supposedly this helps commands such as `cd' that read directory names, | |
4773 | but can someone explain how it helps them? -- RMS */ | |
4774 | if (XSTRING (name)->size == 0) | |
4775 | return Qt; | |
4776 | #endif /* VMS */ | |
4777 | return Ffile_exists_p (string); | |
4778 | } | |
4779 | ||
4780 | DEFUN ("read-file-name", Fread_file_name, Sread_file_name, 1, 5, 0, | |
4781 | "Read file name, prompting with PROMPT and completing in directory DIR.\n\ | |
4782 | Value is not expanded---you must call `expand-file-name' yourself.\n\ | |
3b7f6e60 EN |
4783 | Default name to DEFAULT-FILENAME if user enters a null string.\n\ |
4784 | (If DEFAULT-FILENAME is omitted, the visited file name is used,\n\ | |
3beeedfe | 4785 | except that if INITIAL is specified, that combined with DIR is used.)\n\ |
570d7624 JB |
4786 | Fourth arg MUSTMATCH non-nil means require existing file's name.\n\ |
4787 | Non-nil and non-t means also require confirmation after completion.\n\ | |
4788 | Fifth arg INITIAL specifies text to start with.\n\ | |
4789 | DIR defaults to current buffer's directory default.") | |
3b7f6e60 EN |
4790 | (prompt, dir, default_filename, mustmatch, initial) |
4791 | Lisp_Object prompt, dir, default_filename, mustmatch, initial; | |
570d7624 | 4792 | { |
85b5fe07 | 4793 | Lisp_Object val, insdef, insdef1, tem; |
570d7624 JB |
4794 | struct gcpro gcpro1, gcpro2; |
4795 | register char *homedir; | |
4796 | int count; | |
4797 | ||
265a9e55 | 4798 | if (NILP (dir)) |
570d7624 | 4799 | dir = current_buffer->directory; |
3b7f6e60 | 4800 | if (NILP (default_filename)) |
3beeedfe RS |
4801 | { |
4802 | if (! NILP (initial)) | |
3b7f6e60 | 4803 | default_filename = Fexpand_file_name (initial, dir); |
3beeedfe | 4804 | else |
3b7f6e60 | 4805 | default_filename = current_buffer->filename; |
3beeedfe | 4806 | } |
570d7624 JB |
4807 | |
4808 | /* If dir starts with user's homedir, change that to ~. */ | |
4809 | homedir = (char *) egetenv ("HOME"); | |
199607e4 RS |
4810 | #ifdef DOS_NT |
4811 | homedir = strcpy (alloca (strlen (homedir) + 1), homedir); | |
4812 | CORRECT_DIR_SEPS (homedir); | |
4813 | #endif | |
570d7624 | 4814 | if (homedir != 0 |
93c30b5f | 4815 | && STRINGP (dir) |
570d7624 | 4816 | && !strncmp (homedir, XSTRING (dir)->data, strlen (homedir)) |
5e570b75 | 4817 | && IS_DIRECTORY_SEP (XSTRING (dir)->data[strlen (homedir)])) |
570d7624 JB |
4818 | { |
4819 | dir = make_string (XSTRING (dir)->data + strlen (homedir) - 1, | |
4820 | XSTRING (dir)->size - strlen (homedir) + 1); | |
4821 | XSTRING (dir)->data[0] = '~'; | |
4822 | } | |
4823 | ||
58cc3710 | 4824 | if (insert_default_directory && STRINGP (dir)) |
570d7624 JB |
4825 | { |
4826 | insdef = dir; | |
265a9e55 | 4827 | if (!NILP (initial)) |
570d7624 | 4828 | { |
15c65264 | 4829 | Lisp_Object args[2], pos; |
570d7624 JB |
4830 | |
4831 | args[0] = insdef; | |
4832 | args[1] = initial; | |
4833 | insdef = Fconcat (2, args); | |
351bd676 | 4834 | pos = make_number (XSTRING (double_dollars (dir))->size); |
6e710ae5 | 4835 | insdef1 = Fcons (double_dollars (insdef), pos); |
570d7624 | 4836 | } |
6e710ae5 RS |
4837 | else |
4838 | insdef1 = double_dollars (insdef); | |
570d7624 | 4839 | } |
58cc3710 | 4840 | else if (STRINGP (initial)) |
351bd676 KH |
4841 | { |
4842 | insdef = initial; | |
4843 | insdef1 = Fcons (double_dollars (insdef), 0); | |
4844 | } | |
570d7624 | 4845 | else |
85b5fe07 | 4846 | insdef = Qnil, insdef1 = Qnil; |
570d7624 JB |
4847 | |
4848 | #ifdef VMS | |
4849 | count = specpdl_ptr - specpdl; | |
4850 | specbind (intern ("completion-ignore-case"), Qt); | |
4851 | #endif | |
4852 | ||
3b7f6e60 | 4853 | GCPRO2 (insdef, default_filename); |
570d7624 | 4854 | val = Fcompleting_read (prompt, intern ("read-file-name-internal"), |
85b5fe07 | 4855 | dir, mustmatch, insdef1, |
97d0510c | 4856 | Qfile_name_history, default_filename); |
570d7624 JB |
4857 | |
4858 | #ifdef VMS | |
4859 | unbind_to (count, Qnil); | |
4860 | #endif | |
4861 | ||
4862 | UNGCPRO; | |
265a9e55 | 4863 | if (NILP (val)) |
570d7624 JB |
4864 | error ("No file name specified"); |
4865 | tem = Fstring_equal (val, insdef); | |
3b7f6e60 EN |
4866 | if (!NILP (tem) && !NILP (default_filename)) |
4867 | return default_filename; | |
b320926a | 4868 | if (XSTRING (val)->size == 0 && NILP (insdef)) |
d9bc1c99 | 4869 | { |
3b7f6e60 EN |
4870 | if (!NILP (default_filename)) |
4871 | return default_filename; | |
d9bc1c99 RS |
4872 | else |
4873 | error ("No default file name"); | |
4874 | } | |
570d7624 JB |
4875 | return Fsubstitute_in_file_name (val); |
4876 | } | |
4877 | ||
5e570b75 | 4878 | #if 0 /* Old version */ |
570d7624 | 4879 | DEFUN ("read-file-name", Fread_file_name, Sread_file_name, 1, 5, 0, |
0de25302 KH |
4880 | /* Don't confuse make-docfile by having two doc strings for this function. |
4881 | make-docfile does not pay attention to #if, for good reason! */ | |
4882 | 0) | |
570d7624 JB |
4883 | (prompt, dir, defalt, mustmatch, initial) |
4884 | Lisp_Object prompt, dir, defalt, mustmatch, initial; | |
4885 | { | |
4886 | Lisp_Object val, insdef, tem; | |
4887 | struct gcpro gcpro1, gcpro2; | |
4888 | register char *homedir; | |
4889 | int count; | |
4890 | ||
265a9e55 | 4891 | if (NILP (dir)) |
570d7624 | 4892 | dir = current_buffer->directory; |
265a9e55 | 4893 | if (NILP (defalt)) |
570d7624 JB |
4894 | defalt = current_buffer->filename; |
4895 | ||
4896 | /* If dir starts with user's homedir, change that to ~. */ | |
4897 | homedir = (char *) egetenv ("HOME"); | |
4898 | if (homedir != 0 | |
93c30b5f | 4899 | && STRINGP (dir) |
570d7624 JB |
4900 | && !strncmp (homedir, XSTRING (dir)->data, strlen (homedir)) |
4901 | && XSTRING (dir)->data[strlen (homedir)] == '/') | |
4902 | { | |
4903 | dir = make_string (XSTRING (dir)->data + strlen (homedir) - 1, | |
4904 | XSTRING (dir)->size - strlen (homedir) + 1); | |
4905 | XSTRING (dir)->data[0] = '~'; | |
4906 | } | |
4907 | ||
265a9e55 | 4908 | if (!NILP (initial)) |
570d7624 JB |
4909 | insdef = initial; |
4910 | else if (insert_default_directory) | |
4911 | insdef = dir; | |
4912 | else | |
4913 | insdef = build_string (""); | |
4914 | ||
4915 | #ifdef VMS | |
4916 | count = specpdl_ptr - specpdl; | |
4917 | specbind (intern ("completion-ignore-case"), Qt); | |
4918 | #endif | |
4919 | ||
4920 | GCPRO2 (insdef, defalt); | |
4921 | val = Fcompleting_read (prompt, intern ("read-file-name-internal"), | |
4922 | dir, mustmatch, | |
15c65264 | 4923 | insert_default_directory ? insdef : Qnil, |
27908c4b | 4924 | Qfile_name_history, Qnil); |
570d7624 JB |
4925 | |
4926 | #ifdef VMS | |
4927 | unbind_to (count, Qnil); | |
4928 | #endif | |
4929 | ||
4930 | UNGCPRO; | |
265a9e55 | 4931 | if (NILP (val)) |
570d7624 JB |
4932 | error ("No file name specified"); |
4933 | tem = Fstring_equal (val, insdef); | |
265a9e55 | 4934 | if (!NILP (tem) && !NILP (defalt)) |
570d7624 JB |
4935 | return defalt; |
4936 | return Fsubstitute_in_file_name (val); | |
4937 | } | |
4938 | #endif /* Old version */ | |
4939 | \f | |
4940 | syms_of_fileio () | |
4941 | { | |
0bf2eed2 | 4942 | Qexpand_file_name = intern ("expand-file-name"); |
273e0829 | 4943 | Qsubstitute_in_file_name = intern ("substitute-in-file-name"); |
0bf2eed2 RS |
4944 | Qdirectory_file_name = intern ("directory-file-name"); |
4945 | Qfile_name_directory = intern ("file-name-directory"); | |
4946 | Qfile_name_nondirectory = intern ("file-name-nondirectory"); | |
642ef245 | 4947 | Qunhandled_file_name_directory = intern ("unhandled-file-name-directory"); |
0bf2eed2 | 4948 | Qfile_name_as_directory = intern ("file-name-as-directory"); |
32f4334d | 4949 | Qcopy_file = intern ("copy-file"); |
a6e6e718 | 4950 | Qmake_directory_internal = intern ("make-directory-internal"); |
32f4334d RS |
4951 | Qdelete_directory = intern ("delete-directory"); |
4952 | Qdelete_file = intern ("delete-file"); | |
4953 | Qrename_file = intern ("rename-file"); | |
4954 | Qadd_name_to_file = intern ("add-name-to-file"); | |
4955 | Qmake_symbolic_link = intern ("make-symbolic-link"); | |
4956 | Qfile_exists_p = intern ("file-exists-p"); | |
4957 | Qfile_executable_p = intern ("file-executable-p"); | |
4958 | Qfile_readable_p = intern ("file-readable-p"); | |
32f4334d | 4959 | Qfile_writable_p = intern ("file-writable-p"); |
1f8653eb RS |
4960 | Qfile_symlink_p = intern ("file-symlink-p"); |
4961 | Qaccess_file = intern ("access-file"); | |
32f4334d | 4962 | Qfile_directory_p = intern ("file-directory-p"); |
adedc71d | 4963 | Qfile_regular_p = intern ("file-regular-p"); |
32f4334d RS |
4964 | Qfile_accessible_directory_p = intern ("file-accessible-directory-p"); |
4965 | Qfile_modes = intern ("file-modes"); | |
4966 | Qset_file_modes = intern ("set-file-modes"); | |
4967 | Qfile_newer_than_file_p = intern ("file-newer-than-file-p"); | |
4968 | Qinsert_file_contents = intern ("insert-file-contents"); | |
4969 | Qwrite_region = intern ("write-region"); | |
4970 | Qverify_visited_file_modtime = intern ("verify-visited-file-modtime"); | |
3ec46acd | 4971 | Qset_visited_file_modtime = intern ("set-visited-file-modtime"); |
32f4334d | 4972 | |
642ef245 | 4973 | staticpro (&Qexpand_file_name); |
273e0829 | 4974 | staticpro (&Qsubstitute_in_file_name); |
642ef245 JB |
4975 | staticpro (&Qdirectory_file_name); |
4976 | staticpro (&Qfile_name_directory); | |
4977 | staticpro (&Qfile_name_nondirectory); | |
4978 | staticpro (&Qunhandled_file_name_directory); | |
4979 | staticpro (&Qfile_name_as_directory); | |
15c65264 | 4980 | staticpro (&Qcopy_file); |
c34b559d | 4981 | staticpro (&Qmake_directory_internal); |
15c65264 RS |
4982 | staticpro (&Qdelete_directory); |
4983 | staticpro (&Qdelete_file); | |
4984 | staticpro (&Qrename_file); | |
4985 | staticpro (&Qadd_name_to_file); | |
4986 | staticpro (&Qmake_symbolic_link); | |
4987 | staticpro (&Qfile_exists_p); | |
4988 | staticpro (&Qfile_executable_p); | |
4989 | staticpro (&Qfile_readable_p); | |
15c65264 | 4990 | staticpro (&Qfile_writable_p); |
1f8653eb RS |
4991 | staticpro (&Qaccess_file); |
4992 | staticpro (&Qfile_symlink_p); | |
15c65264 | 4993 | staticpro (&Qfile_directory_p); |
adedc71d | 4994 | staticpro (&Qfile_regular_p); |
15c65264 RS |
4995 | staticpro (&Qfile_accessible_directory_p); |
4996 | staticpro (&Qfile_modes); | |
4997 | staticpro (&Qset_file_modes); | |
4998 | staticpro (&Qfile_newer_than_file_p); | |
4999 | staticpro (&Qinsert_file_contents); | |
5000 | staticpro (&Qwrite_region); | |
5001 | staticpro (&Qverify_visited_file_modtime); | |
0a61794b | 5002 | staticpro (&Qset_visited_file_modtime); |
642ef245 JB |
5003 | |
5004 | Qfile_name_history = intern ("file-name-history"); | |
5005 | Fset (Qfile_name_history, Qnil); | |
15c65264 RS |
5006 | staticpro (&Qfile_name_history); |
5007 | ||
570d7624 JB |
5008 | Qfile_error = intern ("file-error"); |
5009 | staticpro (&Qfile_error); | |
199607e4 | 5010 | Qfile_already_exists = intern ("file-already-exists"); |
570d7624 | 5011 | staticpro (&Qfile_already_exists); |
c0b7b21c RS |
5012 | Qfile_date_error = intern ("file-date-error"); |
5013 | staticpro (&Qfile_date_error); | |
570d7624 | 5014 | |
5e570b75 | 5015 | #ifdef DOS_NT |
4c3c22f3 RS |
5016 | Qfind_buffer_file_type = intern ("find-buffer-file-type"); |
5017 | staticpro (&Qfind_buffer_file_type); | |
5e570b75 | 5018 | #endif /* DOS_NT */ |
4c3c22f3 | 5019 | |
0d420e88 | 5020 | DEFVAR_LISP ("auto-save-file-format", &Vauto_save_file_format, |
824a483f | 5021 | "*Format in which to write auto-save files.\n\ |
0d420e88 BG |
5022 | Should be a list of symbols naming formats that are defined in `format-alist'.\n\ |
5023 | If it is t, which is the default, auto-save files are written in the\n\ | |
5024 | same format as a regular save would use."); | |
5025 | Vauto_save_file_format = Qt; | |
5026 | ||
5027 | Qformat_decode = intern ("format-decode"); | |
5028 | staticpro (&Qformat_decode); | |
5029 | Qformat_annotate_function = intern ("format-annotate-function"); | |
5030 | staticpro (&Qformat_annotate_function); | |
5031 | ||
d6a3cc15 RS |
5032 | Qcar_less_than_car = intern ("car-less-than-car"); |
5033 | staticpro (&Qcar_less_than_car); | |
5034 | ||
570d7624 JB |
5035 | Fput (Qfile_error, Qerror_conditions, |
5036 | Fcons (Qfile_error, Fcons (Qerror, Qnil))); | |
5037 | Fput (Qfile_error, Qerror_message, | |
5038 | build_string ("File error")); | |
5039 | ||
5040 | Fput (Qfile_already_exists, Qerror_conditions, | |
5041 | Fcons (Qfile_already_exists, | |
5042 | Fcons (Qfile_error, Fcons (Qerror, Qnil)))); | |
5043 | Fput (Qfile_already_exists, Qerror_message, | |
5044 | build_string ("File already exists")); | |
5045 | ||
c0b7b21c RS |
5046 | Fput (Qfile_date_error, Qerror_conditions, |
5047 | Fcons (Qfile_date_error, | |
5048 | Fcons (Qfile_error, Fcons (Qerror, Qnil)))); | |
5049 | Fput (Qfile_date_error, Qerror_message, | |
5050 | build_string ("Cannot set file date")); | |
5051 | ||
570d7624 JB |
5052 | DEFVAR_BOOL ("insert-default-directory", &insert_default_directory, |
5053 | "*Non-nil means when reading a filename start with default dir in minibuffer."); | |
5054 | insert_default_directory = 1; | |
5055 | ||
5056 | DEFVAR_BOOL ("vms-stmlf-recfm", &vms_stmlf_recfm, | |
5057 | "*Non-nil means write new files with record format `stmlf'.\n\ | |
5058 | nil means use format `var'. This variable is meaningful only on VMS."); | |
5059 | vms_stmlf_recfm = 0; | |
5060 | ||
199607e4 RS |
5061 | DEFVAR_LISP ("directory-sep-char", &Vdirectory_sep_char, |
5062 | "Directory separator character for built-in functions that return file names.\n\ | |
5063 | The value should be either ?/ or ?\\ (any other value is treated as ?\\).\n\ | |
5064 | This variable affects the built-in functions only on Windows,\n\ | |
5065 | on other platforms, it is initialized so that Lisp code can find out\n\ | |
5066 | what the normal separator is."); | |
5067 | Vdirectory_sep_char = '/'; | |
5068 | ||
1d1826db RS |
5069 | DEFVAR_LISP ("file-name-handler-alist", &Vfile_name_handler_alist, |
5070 | "*Alist of elements (REGEXP . HANDLER) for file names handled specially.\n\ | |
5071 | If a file name matches REGEXP, then all I/O on that file is done by calling\n\ | |
5072 | HANDLER.\n\ | |
5073 | \n\ | |
5074 | The first argument given to HANDLER is the name of the I/O primitive\n\ | |
5075 | to be handled; the remaining arguments are the arguments that were\n\ | |
5076 | passed to that primitive. For example, if you do\n\ | |
5077 | (file-exists-p FILENAME)\n\ | |
5078 | and FILENAME is handled by HANDLER, then HANDLER is called like this:\n\ | |
642ef245 JB |
5079 | (funcall HANDLER 'file-exists-p FILENAME)\n\ |
5080 | The function `find-file-name-handler' checks this list for a handler\n\ | |
5081 | for its argument."); | |
09121adc RS |
5082 | Vfile_name_handler_alist = Qnil; |
5083 | ||
d6a3cc15 | 5084 | DEFVAR_LISP ("after-insert-file-functions", &Vafter_insert_file_functions, |
246cfea5 RS |
5085 | "A list of functions to be called at the end of `insert-file-contents'.\n\ |
5086 | Each is passed one argument, the number of bytes inserted. It should return\n\ | |
5087 | the new byte count, and leave point the same. If `insert-file-contents' is\n\ | |
5088 | intercepted by a handler from `file-name-handler-alist', that handler is\n\ | |
d6a3cc15 RS |
5089 | responsible for calling the after-insert-file-functions if appropriate."); |
5090 | Vafter_insert_file_functions = Qnil; | |
5091 | ||
5092 | DEFVAR_LISP ("write-region-annotate-functions", &Vwrite_region_annotate_functions, | |
246cfea5 | 5093 | "A list of functions to be called at the start of `write-region'.\n\ |
568aa585 RS |
5094 | Each is passed two arguments, START and END as for `write-region'.\n\ |
5095 | These are usually two numbers but not always; see the documentation\n\ | |
5096 | for `write-region'. The function should return a list of pairs\n\ | |
5097 | of the form (POSITION . STRING), consisting of strings to be effectively\n\ | |
246cfea5 RS |
5098 | inserted at the specified positions of the file being written (1 means to\n\ |
5099 | insert before the first byte written). The POSITIONs must be sorted into\n\ | |
5100 | increasing order. If there are several functions in the list, the several\n\ | |
d6a3cc15 RS |
5101 | lists are merged destructively."); |
5102 | Vwrite_region_annotate_functions = Qnil; | |
5103 | ||
6fc6f94b RS |
5104 | DEFVAR_LISP ("write-region-annotations-so-far", |
5105 | &Vwrite_region_annotations_so_far, | |
5106 | "When an annotation function is called, this holds the previous annotations.\n\ | |
5107 | These are the annotations made by other annotation functions\n\ | |
5108 | that were already called. See also `write-region-annotate-functions'."); | |
5109 | Vwrite_region_annotations_so_far = Qnil; | |
5110 | ||
82c2d839 | 5111 | DEFVAR_LISP ("inhibit-file-name-handlers", &Vinhibit_file_name_handlers, |
268466ed | 5112 | "A list of file name handlers that temporarily should not be used.\n\ |
e3e86241 | 5113 | This applies only to the operation `inhibit-file-name-operation'."); |
82c2d839 RS |
5114 | Vinhibit_file_name_handlers = Qnil; |
5115 | ||
a65970a0 RS |
5116 | DEFVAR_LISP ("inhibit-file-name-operation", &Vinhibit_file_name_operation, |
5117 | "The operation for which `inhibit-file-name-handlers' is applicable."); | |
5118 | Vinhibit_file_name_operation = Qnil; | |
5119 | ||
e54d3b5d | 5120 | DEFVAR_LISP ("auto-save-list-file-name", &Vauto_save_list_file_name, |
51931aca KH |
5121 | "File name in which we write a list of all auto save file names.\n\ |
5122 | This variable is initialized automatically from `auto-save-list-file-prefix'\n\ | |
5123 | shortly after Emacs reads your `.emacs' file, if you have not yet given it\n\ | |
5124 | a non-nil value."); | |
e54d3b5d RS |
5125 | Vauto_save_list_file_name = Qnil; |
5126 | ||
642ef245 | 5127 | defsubr (&Sfind_file_name_handler); |
570d7624 JB |
5128 | defsubr (&Sfile_name_directory); |
5129 | defsubr (&Sfile_name_nondirectory); | |
642ef245 | 5130 | defsubr (&Sunhandled_file_name_directory); |
570d7624 JB |
5131 | defsubr (&Sfile_name_as_directory); |
5132 | defsubr (&Sdirectory_file_name); | |
5133 | defsubr (&Smake_temp_name); | |
5134 | defsubr (&Sexpand_file_name); | |
5135 | defsubr (&Ssubstitute_in_file_name); | |
5136 | defsubr (&Scopy_file); | |
9bbe01fb | 5137 | defsubr (&Smake_directory_internal); |
aa734e17 | 5138 | defsubr (&Sdelete_directory); |
570d7624 JB |
5139 | defsubr (&Sdelete_file); |
5140 | defsubr (&Srename_file); | |
5141 | defsubr (&Sadd_name_to_file); | |
5142 | #ifdef S_IFLNK | |
5143 | defsubr (&Smake_symbolic_link); | |
5144 | #endif /* S_IFLNK */ | |
5145 | #ifdef VMS | |
5146 | defsubr (&Sdefine_logical_name); | |
5147 | #endif /* VMS */ | |
5148 | #ifdef HPUX_NET | |
5149 | defsubr (&Ssysnetunam); | |
5150 | #endif /* HPUX_NET */ | |
5151 | defsubr (&Sfile_name_absolute_p); | |
5152 | defsubr (&Sfile_exists_p); | |
5153 | defsubr (&Sfile_executable_p); | |
5154 | defsubr (&Sfile_readable_p); | |
5155 | defsubr (&Sfile_writable_p); | |
1f8653eb | 5156 | defsubr (&Saccess_file); |
570d7624 JB |
5157 | defsubr (&Sfile_symlink_p); |
5158 | defsubr (&Sfile_directory_p); | |
b72dea2a | 5159 | defsubr (&Sfile_accessible_directory_p); |
f793dc6c | 5160 | defsubr (&Sfile_regular_p); |
570d7624 JB |
5161 | defsubr (&Sfile_modes); |
5162 | defsubr (&Sset_file_modes); | |
c24e9a53 RS |
5163 | defsubr (&Sset_default_file_modes); |
5164 | defsubr (&Sdefault_file_modes); | |
570d7624 JB |
5165 | defsubr (&Sfile_newer_than_file_p); |
5166 | defsubr (&Sinsert_file_contents); | |
5167 | defsubr (&Swrite_region); | |
d6a3cc15 | 5168 | defsubr (&Scar_less_than_car); |
570d7624 JB |
5169 | defsubr (&Sverify_visited_file_modtime); |
5170 | defsubr (&Sclear_visited_file_modtime); | |
f5d5eccf | 5171 | defsubr (&Svisited_file_modtime); |
570d7624 JB |
5172 | defsubr (&Sset_visited_file_modtime); |
5173 | defsubr (&Sdo_auto_save); | |
5174 | defsubr (&Sset_buffer_auto_saved); | |
b60247d9 | 5175 | defsubr (&Sclear_buffer_auto_save_failure); |
570d7624 JB |
5176 | defsubr (&Srecent_auto_save_p); |
5177 | ||
5178 | defsubr (&Sread_file_name_internal); | |
5179 | defsubr (&Sread_file_name); | |
85ffea93 | 5180 | |
483a2e10 | 5181 | #ifdef unix |
85ffea93 | 5182 | defsubr (&Sunix_sync); |
483a2e10 | 5183 | #endif |
570d7624 | 5184 | } |