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 | ||
570d7624 JB |
27 | #include <sys/types.h> |
28 | #include <sys/stat.h> | |
bfb61299 | 29 | |
29beb080 RS |
30 | #ifdef HAVE_UNISTD_H |
31 | #include <unistd.h> | |
32 | #endif | |
33 | ||
f73b0ada BF |
34 | #if !defined (S_ISLNK) && defined (S_IFLNK) |
35 | # define S_ISLNK(m) (((m) & S_IFMT) == S_IFLNK) | |
36 | #endif | |
37 | ||
bb369dc6 RS |
38 | #if !defined (S_ISFIFO) && defined (S_IFIFO) |
39 | # define S_ISFIFO(m) (((m) & S_IFMT) == S_IFIFO) | |
40 | #endif | |
41 | ||
f73b0ada BF |
42 | #if !defined (S_ISREG) && defined (S_IFREG) |
43 | # define S_ISREG(m) (((m) & S_IFMT) == S_IFREG) | |
44 | #endif | |
45 | ||
bfb61299 | 46 | #ifdef VMS |
de5bf5d3 | 47 | #include "vms-pwd.h" |
bfb61299 | 48 | #else |
570d7624 | 49 | #include <pwd.h> |
bfb61299 JB |
50 | #endif |
51 | ||
4c3c22f3 RS |
52 | #ifdef MSDOS |
53 | #include "msdos.h" | |
54 | #include <sys/param.h> | |
01369dc7 RS |
55 | #if __DJGPP__ >= 2 |
56 | #include <fcntl.h> | |
57 | #include <string.h> | |
58 | #endif | |
4c3c22f3 RS |
59 | #endif |
60 | ||
570d7624 | 61 | #include <ctype.h> |
bfb61299 JB |
62 | |
63 | #ifdef VMS | |
3d9f5ce2 | 64 | #include "vmsdir.h" |
bfb61299 JB |
65 | #include <perror.h> |
66 | #include <stddef.h> | |
67 | #include <string.h> | |
bfb61299 JB |
68 | #endif |
69 | ||
570d7624 JB |
70 | #include <errno.h> |
71 | ||
bfb61299 | 72 | #ifndef vax11c |
570d7624 | 73 | extern int errno; |
570d7624 JB |
74 | #endif |
75 | ||
ce97267f | 76 | extern char *strerror (); |
570d7624 JB |
77 | |
78 | #ifdef APOLLO | |
79 | #include <sys/time.h> | |
80 | #endif | |
81 | ||
6e23c83e JB |
82 | #ifndef USG |
83 | #ifndef VMS | |
84 | #ifndef BSD4_1 | |
5e570b75 | 85 | #ifndef WINDOWSNT |
6e23c83e JB |
86 | #define HAVE_FSYNC |
87 | #endif | |
88 | #endif | |
89 | #endif | |
5e570b75 | 90 | #endif |
6e23c83e | 91 | |
570d7624 | 92 | #include "lisp.h" |
8d4e077b | 93 | #include "intervals.h" |
570d7624 | 94 | #include "buffer.h" |
6fdaa9a0 KH |
95 | #include "charset.h" |
96 | #include "coding.h" | |
570d7624 JB |
97 | #include "window.h" |
98 | ||
5e570b75 RS |
99 | #ifdef WINDOWSNT |
100 | #define NOMINMAX 1 | |
101 | #include <windows.h> | |
102 | #include <stdlib.h> | |
103 | #include <fcntl.h> | |
104 | #endif /* not WINDOWSNT */ | |
105 | ||
199607e4 RS |
106 | #ifdef DOS_NT |
107 | #define CORRECT_DIR_SEPS(s) \ | |
108 | do { if ('/' == DIRECTORY_SEP) dostounix_filename (s); \ | |
109 | else unixtodos_filename (s); \ | |
110 | } while (0) | |
111 | /* On Windows, drive letters must be alphabetic - on DOS, the Netware | |
112 | redirector allows the six letters between 'Z' and 'a' as well. */ | |
113 | #ifdef MSDOS | |
114 | #define IS_DRIVE(x) ((x) >= 'A' && (x) <= 'z') | |
115 | #endif | |
116 | #ifdef WINDOWSNT | |
117 | #define IS_DRIVE(x) isalpha (x) | |
118 | #endif | |
f54b565c MB |
119 | /* Need to lower-case the drive letter, or else expanded |
120 | filenames will sometimes compare inequal, because | |
121 | `expand-file-name' doesn't always down-case the drive letter. */ | |
122 | #define DRIVE_LETTER(x) (tolower (x)) | |
199607e4 RS |
123 | #endif |
124 | ||
570d7624 | 125 | #ifdef VMS |
570d7624 JB |
126 | #include <file.h> |
127 | #include <rmsdef.h> | |
128 | #include <fab.h> | |
129 | #include <nam.h> | |
130 | #endif | |
131 | ||
de5bf5d3 | 132 | #include "systime.h" |
570d7624 JB |
133 | |
134 | #ifdef HPUX | |
135 | #include <netio.h> | |
9b7828a5 | 136 | #ifndef HPUX8 |
47e7b9e5 | 137 | #ifndef HPUX9 |
570d7624 JB |
138 | #include <errnet.h> |
139 | #endif | |
9b7828a5 | 140 | #endif |
47e7b9e5 | 141 | #endif |
570d7624 JB |
142 | |
143 | #ifndef O_WRONLY | |
144 | #define O_WRONLY 1 | |
145 | #endif | |
146 | ||
4018b5ef RS |
147 | #ifndef O_RDONLY |
148 | #define O_RDONLY 0 | |
149 | #endif | |
150 | ||
570d7624 JB |
151 | #define min(a, b) ((a) < (b) ? (a) : (b)) |
152 | #define max(a, b) ((a) > (b) ? (a) : (b)) | |
153 | ||
154 | /* Nonzero during writing of auto-save files */ | |
155 | int auto_saving; | |
156 | ||
157 | /* Set by auto_save_1 to mode of original file so Fwrite_region will create | |
158 | a new file with the same mode as the original */ | |
159 | int auto_save_mode_bits; | |
160 | ||
199607e4 | 161 | /* Alist of elements (REGEXP . HANDLER) for file names |
32f4334d RS |
162 | whose I/O is done with a special handler. */ |
163 | Lisp_Object Vfile_name_handler_alist; | |
164 | ||
0d420e88 BG |
165 | /* Format for auto-save files */ |
166 | Lisp_Object Vauto_save_file_format; | |
167 | ||
168 | /* Lisp functions for translating file formats */ | |
169 | Lisp_Object Qformat_decode, Qformat_annotate_function; | |
170 | ||
d6a3cc15 RS |
171 | /* Functions to be called to process text properties in inserted file. */ |
172 | Lisp_Object Vafter_insert_file_functions; | |
173 | ||
174 | /* Functions to be called to create text property annotations for file. */ | |
175 | Lisp_Object Vwrite_region_annotate_functions; | |
176 | ||
6fc6f94b RS |
177 | /* During build_annotations, each time an annotation function is called, |
178 | this holds the annotations made by the previous functions. */ | |
179 | Lisp_Object Vwrite_region_annotations_so_far; | |
180 | ||
e54d3b5d RS |
181 | /* File name in which we write a list of all our auto save files. */ |
182 | Lisp_Object Vauto_save_list_file_name; | |
183 | ||
570d7624 JB |
184 | /* Nonzero means, when reading a filename in the minibuffer, |
185 | start out by inserting the default directory into the minibuffer. */ | |
186 | int insert_default_directory; | |
187 | ||
188 | /* On VMS, nonzero means write new files with record format stmlf. | |
189 | Zero means use var format. */ | |
190 | int vms_stmlf_recfm; | |
191 | ||
199607e4 RS |
192 | /* On NT, specifies the directory separator character, used (eg.) when |
193 | expanding file names. This can be bound to / or \. */ | |
194 | Lisp_Object Vdirectory_sep_char; | |
195 | ||
84f6296a RS |
196 | extern Lisp_Object Vuser_login_name; |
197 | ||
198 | extern int minibuf_level; | |
199 | ||
a65970a0 RS |
200 | /* These variables describe handlers that have "already" had a chance |
201 | to handle the current operation. | |
202 | ||
203 | Vinhibit_file_name_handlers is a list of file name handlers. | |
204 | Vinhibit_file_name_operation is the operation being handled. | |
205 | If we try to handle that operation, we ignore those handlers. */ | |
206 | ||
82c2d839 | 207 | static Lisp_Object Vinhibit_file_name_handlers; |
a65970a0 | 208 | static Lisp_Object Vinhibit_file_name_operation; |
82c2d839 | 209 | |
c0b7b21c | 210 | Lisp_Object Qfile_error, Qfile_already_exists, Qfile_date_error; |
570d7624 | 211 | |
15c65264 RS |
212 | Lisp_Object Qfile_name_history; |
213 | ||
d6a3cc15 RS |
214 | Lisp_Object Qcar_less_than_car; |
215 | ||
570d7624 JB |
216 | report_file_error (string, data) |
217 | char *string; | |
218 | Lisp_Object data; | |
219 | { | |
220 | Lisp_Object errstring; | |
221 | ||
a1f17b2d | 222 | errstring = build_string (strerror (errno)); |
570d7624 JB |
223 | |
224 | /* System error messages are capitalized. Downcase the initial | |
225 | unless it is followed by a slash. */ | |
226 | if (XSTRING (errstring)->data[1] != '/') | |
227 | XSTRING (errstring)->data[0] = DOWNCASE (XSTRING (errstring)->data[0]); | |
228 | ||
229 | while (1) | |
230 | Fsignal (Qfile_error, | |
231 | Fcons (build_string (string), Fcons (errstring, data))); | |
232 | } | |
b5148e85 RS |
233 | |
234 | close_file_unwind (fd) | |
235 | Lisp_Object fd; | |
236 | { | |
237 | close (XFASTINT (fd)); | |
238 | } | |
a1d2b64a RS |
239 | |
240 | /* Restore point, having saved it as a marker. */ | |
241 | ||
242 | restore_point_unwind (location) | |
199607e4 | 243 | Lisp_Object location; |
a1d2b64a RS |
244 | { |
245 | SET_PT (marker_position (location)); | |
246 | Fset_marker (location, Qnil, Qnil); | |
247 | } | |
570d7624 | 248 | \f |
0bf2eed2 | 249 | Lisp_Object Qexpand_file_name; |
273e0829 | 250 | Lisp_Object Qsubstitute_in_file_name; |
0bf2eed2 RS |
251 | Lisp_Object Qdirectory_file_name; |
252 | Lisp_Object Qfile_name_directory; | |
253 | Lisp_Object Qfile_name_nondirectory; | |
642ef245 | 254 | Lisp_Object Qunhandled_file_name_directory; |
0bf2eed2 | 255 | Lisp_Object Qfile_name_as_directory; |
32f4334d | 256 | Lisp_Object Qcopy_file; |
a6e6e718 | 257 | Lisp_Object Qmake_directory_internal; |
32f4334d RS |
258 | Lisp_Object Qdelete_directory; |
259 | Lisp_Object Qdelete_file; | |
260 | Lisp_Object Qrename_file; | |
261 | Lisp_Object Qadd_name_to_file; | |
262 | Lisp_Object Qmake_symbolic_link; | |
263 | Lisp_Object Qfile_exists_p; | |
264 | Lisp_Object Qfile_executable_p; | |
265 | Lisp_Object Qfile_readable_p; | |
32f4334d | 266 | Lisp_Object Qfile_writable_p; |
1f8653eb RS |
267 | Lisp_Object Qfile_symlink_p; |
268 | Lisp_Object Qaccess_file; | |
32f4334d | 269 | Lisp_Object Qfile_directory_p; |
adedc71d | 270 | Lisp_Object Qfile_regular_p; |
32f4334d RS |
271 | Lisp_Object Qfile_accessible_directory_p; |
272 | Lisp_Object Qfile_modes; | |
273 | Lisp_Object Qset_file_modes; | |
274 | Lisp_Object Qfile_newer_than_file_p; | |
275 | Lisp_Object Qinsert_file_contents; | |
276 | Lisp_Object Qwrite_region; | |
277 | Lisp_Object Qverify_visited_file_modtime; | |
3ec46acd | 278 | Lisp_Object Qset_visited_file_modtime; |
32f4334d | 279 | |
49307295 KH |
280 | DEFUN ("find-file-name-handler", Ffind_file_name_handler, Sfind_file_name_handler, 2, 2, 0, |
281 | "Return FILENAME's handler function for OPERATION, if it has one.\n\ | |
642ef245 JB |
282 | Otherwise, return nil.\n\ |
283 | A file name is handled if one of the regular expressions in\n\ | |
82c2d839 | 284 | `file-name-handler-alist' matches it.\n\n\ |
a65970a0 RS |
285 | If OPERATION equals `inhibit-file-name-operation', then we ignore\n\ |
286 | any handlers that are members of `inhibit-file-name-handlers',\n\ | |
287 | but we still do run any other handlers. This lets handlers\n\ | |
82c2d839 | 288 | use the standard functions without calling themselves recursively.") |
49307295 KH |
289 | (filename, operation) |
290 | Lisp_Object filename, operation; | |
32f4334d | 291 | { |
642ef245 | 292 | /* This function must not munge the match data. */ |
a65970a0 | 293 | Lisp_Object chain, inhibited_handlers; |
642ef245 | 294 | |
e4432095 JB |
295 | CHECK_STRING (filename, 0); |
296 | ||
a65970a0 RS |
297 | if (EQ (operation, Vinhibit_file_name_operation)) |
298 | inhibited_handlers = Vinhibit_file_name_handlers; | |
299 | else | |
300 | inhibited_handlers = Qnil; | |
82c2d839 | 301 | |
93c30b5f | 302 | for (chain = Vfile_name_handler_alist; CONSP (chain); |
32f4334d RS |
303 | chain = XCONS (chain)->cdr) |
304 | { | |
305 | Lisp_Object elt; | |
306 | elt = XCONS (chain)->car; | |
93c30b5f | 307 | if (CONSP (elt)) |
32f4334d RS |
308 | { |
309 | Lisp_Object string; | |
310 | string = XCONS (elt)->car; | |
93c30b5f | 311 | if (STRINGP (string) && fast_string_match (string, filename) >= 0) |
a65970a0 RS |
312 | { |
313 | Lisp_Object handler, tem; | |
314 | ||
315 | handler = XCONS (elt)->cdr; | |
316 | tem = Fmemq (handler, inhibited_handlers); | |
317 | if (NILP (tem)) | |
318 | return handler; | |
319 | } | |
32f4334d | 320 | } |
642ef245 JB |
321 | |
322 | QUIT; | |
32f4334d RS |
323 | } |
324 | return Qnil; | |
325 | } | |
326 | \f | |
570d7624 JB |
327 | DEFUN ("file-name-directory", Ffile_name_directory, Sfile_name_directory, |
328 | 1, 1, 0, | |
3b7f6e60 EN |
329 | "Return the directory component in file name FILENAME.\n\ |
330 | Return nil if FILENAME does not include a directory.\n\ | |
570d7624 JB |
331 | Otherwise return a directory spec.\n\ |
332 | Given a Unix syntax file name, returns a string ending in slash;\n\ | |
333 | on VMS, perhaps instead a string ending in `:', `]' or `>'.") | |
3b7f6e60 EN |
334 | (filename) |
335 | Lisp_Object filename; | |
570d7624 JB |
336 | { |
337 | register unsigned char *beg; | |
338 | register unsigned char *p; | |
0bf2eed2 | 339 | Lisp_Object handler; |
570d7624 | 340 | |
3b7f6e60 | 341 | CHECK_STRING (filename, 0); |
570d7624 | 342 | |
0bf2eed2 RS |
343 | /* If the file name has special constructs in it, |
344 | call the corresponding file handler. */ | |
3b7f6e60 | 345 | handler = Ffind_file_name_handler (filename, Qfile_name_directory); |
0bf2eed2 | 346 | if (!NILP (handler)) |
3b7f6e60 | 347 | return call2 (handler, Qfile_name_directory, filename); |
0bf2eed2 | 348 | |
4c3c22f3 | 349 | #ifdef FILE_SYSTEM_CASE |
3b7f6e60 | 350 | filename = FILE_SYSTEM_CASE (filename); |
4c3c22f3 | 351 | #endif |
3b7f6e60 | 352 | beg = XSTRING (filename)->data; |
199607e4 RS |
353 | #ifdef DOS_NT |
354 | beg = strcpy (alloca (strlen (beg) + 1), beg); | |
355 | #endif | |
3b7f6e60 | 356 | p = beg + XSTRING (filename)->size; |
570d7624 | 357 | |
199607e4 | 358 | while (p != beg && !IS_DIRECTORY_SEP (p[-1]) |
570d7624 JB |
359 | #ifdef VMS |
360 | && p[-1] != ':' && p[-1] != ']' && p[-1] != '>' | |
361 | #endif /* VMS */ | |
199607e4 RS |
362 | #ifdef DOS_NT |
363 | /* only recognise drive specifier at beginning */ | |
364 | && !(p[-1] == ':' && p == beg + 2) | |
365 | #endif | |
570d7624 JB |
366 | ) p--; |
367 | ||
368 | if (p == beg) | |
369 | return Qnil; | |
5e570b75 | 370 | #ifdef DOS_NT |
4c3c22f3 RS |
371 | /* Expansion of "c:" to drive and default directory. */ |
372 | if (p == beg + 2 && beg[1] == ':') | |
373 | { | |
4c3c22f3 | 374 | /* MAXPATHLEN+1 is guaranteed to be enough space for getdefdir. */ |
199607e4 RS |
375 | unsigned char *res = alloca (MAXPATHLEN + 1); |
376 | if (getdefdir (toupper (*beg) - 'A' + 1, res)) | |
4c3c22f3 | 377 | { |
199607e4 | 378 | if (!IS_DIRECTORY_SEP (res[strlen (res) - 1])) |
4c3c22f3 RS |
379 | strcat (res, "/"); |
380 | beg = res; | |
381 | p = beg + strlen (beg); | |
382 | } | |
383 | } | |
199607e4 | 384 | CORRECT_DIR_SEPS (beg); |
5e570b75 | 385 | #endif /* DOS_NT */ |
570d7624 JB |
386 | return make_string (beg, p - beg); |
387 | } | |
388 | ||
389 | DEFUN ("file-name-nondirectory", Ffile_name_nondirectory, Sfile_name_nondirectory, | |
390 | 1, 1, 0, | |
3b7f6e60 | 391 | "Return file name FILENAME sans its directory.\n\ |
570d7624 JB |
392 | For example, in a Unix-syntax file name,\n\ |
393 | this is everything after the last slash,\n\ | |
394 | or the entire name if it contains no slash.") | |
3b7f6e60 EN |
395 | (filename) |
396 | Lisp_Object filename; | |
570d7624 JB |
397 | { |
398 | register unsigned char *beg, *p, *end; | |
0bf2eed2 | 399 | Lisp_Object handler; |
570d7624 | 400 | |
3b7f6e60 | 401 | CHECK_STRING (filename, 0); |
570d7624 | 402 | |
0bf2eed2 RS |
403 | /* If the file name has special constructs in it, |
404 | call the corresponding file handler. */ | |
3b7f6e60 | 405 | handler = Ffind_file_name_handler (filename, Qfile_name_nondirectory); |
0bf2eed2 | 406 | if (!NILP (handler)) |
3b7f6e60 | 407 | return call2 (handler, Qfile_name_nondirectory, filename); |
0bf2eed2 | 408 | |
3b7f6e60 EN |
409 | beg = XSTRING (filename)->data; |
410 | end = p = beg + XSTRING (filename)->size; | |
570d7624 | 411 | |
199607e4 | 412 | while (p != beg && !IS_DIRECTORY_SEP (p[-1]) |
570d7624 JB |
413 | #ifdef VMS |
414 | && p[-1] != ':' && p[-1] != ']' && p[-1] != '>' | |
415 | #endif /* VMS */ | |
199607e4 RS |
416 | #ifdef DOS_NT |
417 | /* only recognise drive specifier at beginning */ | |
418 | && !(p[-1] == ':' && p == beg + 2) | |
419 | #endif | |
570d7624 JB |
420 | ) p--; |
421 | ||
422 | return make_string (p, end - p); | |
423 | } | |
642ef245 JB |
424 | |
425 | DEFUN ("unhandled-file-name-directory", Funhandled_file_name_directory, Sunhandled_file_name_directory, 1, 1, 0, | |
426 | "Return a directly usable directory name somehow associated with FILENAME.\n\ | |
427 | A `directly usable' directory name is one that may be used without the\n\ | |
428 | intervention of any file handler.\n\ | |
429 | If FILENAME is a directly usable file itself, return\n\ | |
430 | (file-name-directory FILENAME).\n\ | |
431 | The `call-process' and `start-process' functions use this function to\n\ | |
432 | get a current directory to run processes in.") | |
433 | (filename) | |
434 | Lisp_Object filename; | |
435 | { | |
436 | Lisp_Object handler; | |
437 | ||
438 | /* If the file name has special constructs in it, | |
439 | call the corresponding file handler. */ | |
49307295 | 440 | handler = Ffind_file_name_handler (filename, Qunhandled_file_name_directory); |
642ef245 JB |
441 | if (!NILP (handler)) |
442 | return call2 (handler, Qunhandled_file_name_directory, filename); | |
443 | ||
444 | return Ffile_name_directory (filename); | |
445 | } | |
446 | ||
570d7624 JB |
447 | \f |
448 | char * | |
449 | file_name_as_directory (out, in) | |
450 | char *out, *in; | |
451 | { | |
452 | int size = strlen (in) - 1; | |
453 | ||
454 | strcpy (out, in); | |
455 | ||
456 | #ifdef VMS | |
457 | /* Is it already a directory string? */ | |
458 | if (in[size] == ':' || in[size] == ']' || in[size] == '>') | |
459 | return out; | |
460 | /* Is it a VMS directory file name? If so, hack VMS syntax. */ | |
461 | else if (! index (in, '/') | |
462 | && ((size > 3 && ! strcmp (&in[size - 3], ".DIR")) | |
463 | || (size > 3 && ! strcmp (&in[size - 3], ".dir")) | |
464 | || (size > 5 && (! strncmp (&in[size - 5], ".DIR", 4) | |
465 | || ! strncmp (&in[size - 5], ".dir", 4)) | |
466 | && (in[size - 1] == '.' || in[size - 1] == ';') | |
467 | && in[size] == '1'))) | |
468 | { | |
469 | register char *p, *dot; | |
470 | char brack; | |
471 | ||
472 | /* x.dir -> [.x] | |
473 | dir:x.dir --> dir:[x] | |
474 | dir:[x]y.dir --> dir:[x.y] */ | |
475 | p = in + size; | |
476 | while (p != in && *p != ':' && *p != '>' && *p != ']') p--; | |
477 | if (p != in) | |
478 | { | |
479 | strncpy (out, in, p - in); | |
480 | out[p - in] = '\0'; | |
481 | if (*p == ':') | |
482 | { | |
483 | brack = ']'; | |
484 | strcat (out, ":["); | |
485 | } | |
486 | else | |
487 | { | |
488 | brack = *p; | |
489 | strcat (out, "."); | |
490 | } | |
491 | p++; | |
492 | } | |
493 | else | |
494 | { | |
495 | brack = ']'; | |
496 | strcpy (out, "[."); | |
497 | } | |
bfb61299 JB |
498 | dot = index (p, '.'); |
499 | if (dot) | |
570d7624 JB |
500 | { |
501 | /* blindly remove any extension */ | |
502 | size = strlen (out) + (dot - p); | |
503 | strncat (out, p, dot - p); | |
504 | } | |
505 | else | |
506 | { | |
507 | strcat (out, p); | |
508 | size = strlen (out); | |
509 | } | |
510 | out[size++] = brack; | |
511 | out[size] = '\0'; | |
512 | } | |
513 | #else /* not VMS */ | |
514 | /* For Unix syntax, Append a slash if necessary */ | |
199607e4 | 515 | if (!IS_DIRECTORY_SEP (out[size])) |
5e570b75 RS |
516 | { |
517 | out[size + 1] = DIRECTORY_SEP; | |
518 | out[size + 2] = '\0'; | |
519 | } | |
199607e4 RS |
520 | #ifdef DOS_NT |
521 | CORRECT_DIR_SEPS (out); | |
522 | #endif | |
570d7624 JB |
523 | #endif /* not VMS */ |
524 | return out; | |
525 | } | |
526 | ||
527 | DEFUN ("file-name-as-directory", Ffile_name_as_directory, | |
528 | Sfile_name_as_directory, 1, 1, 0, | |
529 | "Return a string representing file FILENAME interpreted as a directory.\n\ | |
530 | This operation exists because a directory is also a file, but its name as\n\ | |
531 | a directory is different from its name as a file.\n\ | |
532 | The result can be used as the value of `default-directory'\n\ | |
533 | or passed as second argument to `expand-file-name'.\n\ | |
534 | For a Unix-syntax file name, just appends a slash.\n\ | |
535 | On VMS, converts \"[X]FOO.DIR\" to \"[X.FOO]\", etc.") | |
536 | (file) | |
537 | Lisp_Object file; | |
538 | { | |
539 | char *buf; | |
0bf2eed2 | 540 | Lisp_Object handler; |
570d7624 JB |
541 | |
542 | CHECK_STRING (file, 0); | |
265a9e55 | 543 | if (NILP (file)) |
570d7624 | 544 | return Qnil; |
0bf2eed2 RS |
545 | |
546 | /* If the file name has special constructs in it, | |
547 | call the corresponding file handler. */ | |
49307295 | 548 | handler = Ffind_file_name_handler (file, Qfile_name_as_directory); |
0bf2eed2 RS |
549 | if (!NILP (handler)) |
550 | return call2 (handler, Qfile_name_as_directory, file); | |
551 | ||
570d7624 JB |
552 | buf = (char *) alloca (XSTRING (file)->size + 10); |
553 | return build_string (file_name_as_directory (buf, XSTRING (file)->data)); | |
554 | } | |
555 | \f | |
556 | /* | |
557 | * Convert from directory name to filename. | |
558 | * On VMS: | |
559 | * xyzzy:[mukesh.emacs] => xyzzy:[mukesh]emacs.dir.1 | |
560 | * xyzzy:[mukesh] => xyzzy:[000000]mukesh.dir.1 | |
199607e4 | 561 | * On UNIX, it's simple: just make sure there isn't a terminating / |
570d7624 JB |
562 | |
563 | * Value is nonzero if the string output is different from the input. | |
564 | */ | |
565 | ||
566 | directory_file_name (src, dst) | |
567 | char *src, *dst; | |
568 | { | |
569 | long slen; | |
570 | #ifdef VMS | |
571 | long rlen; | |
572 | char * ptr, * rptr; | |
573 | char bracket; | |
574 | struct FAB fab = cc$rms_fab; | |
575 | struct NAM nam = cc$rms_nam; | |
576 | char esa[NAM$C_MAXRSS]; | |
577 | #endif /* VMS */ | |
578 | ||
579 | slen = strlen (src); | |
580 | #ifdef VMS | |
581 | if (! index (src, '/') | |
582 | && (src[slen - 1] == ']' | |
583 | || src[slen - 1] == ':' | |
584 | || src[slen - 1] == '>')) | |
585 | { | |
586 | /* VMS style - convert [x.y.z] to [x.y]z, [x] to [000000]x */ | |
587 | fab.fab$l_fna = src; | |
588 | fab.fab$b_fns = slen; | |
589 | fab.fab$l_nam = &nam; | |
590 | fab.fab$l_fop = FAB$M_NAM; | |
591 | ||
592 | nam.nam$l_esa = esa; | |
593 | nam.nam$b_ess = sizeof esa; | |
594 | nam.nam$b_nop |= NAM$M_SYNCHK; | |
595 | ||
596 | /* We call SYS$PARSE to handle such things as [--] for us. */ | |
199607e4 | 597 | if (SYS$PARSE (&fab, 0, 0) == RMS$_NORMAL) |
570d7624 JB |
598 | { |
599 | slen = nam.nam$b_esl; | |
600 | if (esa[slen - 1] == ';' && esa[slen - 2] == '.') | |
601 | slen -= 2; | |
602 | esa[slen] = '\0'; | |
603 | src = esa; | |
604 | } | |
605 | if (src[slen - 1] != ']' && src[slen - 1] != '>') | |
606 | { | |
607 | /* what about when we have logical_name:???? */ | |
608 | if (src[slen - 1] == ':') | |
5e570b75 | 609 | { /* Xlate logical name and see what we get */ |
570d7624 JB |
610 | ptr = strcpy (dst, src); /* upper case for getenv */ |
611 | while (*ptr) | |
612 | { | |
613 | if ('a' <= *ptr && *ptr <= 'z') | |
614 | *ptr -= 040; | |
615 | ptr++; | |
616 | } | |
5e570b75 | 617 | dst[slen - 1] = 0; /* remove colon */ |
570d7624 JB |
618 | if (!(src = egetenv (dst))) |
619 | return 0; | |
620 | /* should we jump to the beginning of this procedure? | |
621 | Good points: allows us to use logical names that xlate | |
622 | to Unix names, | |
623 | Bad points: can be a problem if we just translated to a device | |
624 | name... | |
625 | For now, I'll punt and always expect VMS names, and hope for | |
626 | the best! */ | |
627 | slen = strlen (src); | |
628 | if (src[slen - 1] != ']' && src[slen - 1] != '>') | |
629 | { /* no recursion here! */ | |
630 | strcpy (dst, src); | |
631 | return 0; | |
632 | } | |
633 | } | |
634 | else | |
5e570b75 | 635 | { /* not a directory spec */ |
570d7624 JB |
636 | strcpy (dst, src); |
637 | return 0; | |
638 | } | |
639 | } | |
640 | bracket = src[slen - 1]; | |
641 | ||
642 | /* If bracket is ']' or '>', bracket - 2 is the corresponding | |
643 | opening bracket. */ | |
bfb61299 JB |
644 | ptr = index (src, bracket - 2); |
645 | if (ptr == 0) | |
570d7624 JB |
646 | { /* no opening bracket */ |
647 | strcpy (dst, src); | |
648 | return 0; | |
649 | } | |
650 | if (!(rptr = rindex (src, '.'))) | |
651 | rptr = ptr; | |
652 | slen = rptr - src; | |
653 | strncpy (dst, src, slen); | |
654 | dst[slen] = '\0'; | |
655 | if (*rptr == '.') | |
656 | { | |
657 | dst[slen++] = bracket; | |
658 | dst[slen] = '\0'; | |
659 | } | |
660 | else | |
661 | { | |
662 | /* If we have the top-level of a rooted directory (i.e. xx:[000000]), | |
663 | then translate the device and recurse. */ | |
664 | if (dst[slen - 1] == ':' | |
5e570b75 | 665 | && dst[slen - 2] != ':' /* skip decnet nodes */ |
199607e4 | 666 | && strcmp (src + slen, "[000000]") == 0) |
570d7624 JB |
667 | { |
668 | dst[slen - 1] = '\0'; | |
669 | if ((ptr = egetenv (dst)) | |
670 | && (rlen = strlen (ptr) - 1) > 0 | |
671 | && (ptr[rlen] == ']' || ptr[rlen] == '>') | |
672 | && ptr[rlen - 1] == '.') | |
673 | { | |
72b21817 RS |
674 | char * buf = (char *) alloca (strlen (ptr) + 1); |
675 | strcpy (buf, ptr); | |
676 | buf[rlen - 1] = ']'; | |
677 | buf[rlen] = '\0'; | |
678 | return directory_file_name (buf, dst); | |
570d7624 JB |
679 | } |
680 | else | |
681 | dst[slen - 1] = ':'; | |
682 | } | |
683 | strcat (dst, "[000000]"); | |
684 | slen += 8; | |
685 | } | |
686 | rptr++; | |
687 | rlen = strlen (rptr) - 1; | |
688 | strncat (dst, rptr, rlen); | |
689 | dst[slen + rlen] = '\0'; | |
690 | strcat (dst, ".DIR.1"); | |
691 | return 1; | |
692 | } | |
693 | #endif /* VMS */ | |
694 | /* Process as Unix format: just remove any final slash. | |
695 | But leave "/" unchanged; do not change it to "". */ | |
696 | strcpy (dst, src); | |
125feee8 RS |
697 | #ifdef APOLLO |
698 | /* Handle // as root for apollo's. */ | |
699 | if ((slen > 2 && dst[slen - 1] == '/') | |
700 | || (slen > 1 && dst[0] != '/' && dst[slen - 1] == '/')) | |
701 | dst[slen - 1] = 0; | |
702 | #else | |
199607e4 | 703 | if (slen > 1 |
5e570b75 | 704 | && IS_DIRECTORY_SEP (dst[slen - 1]) |
4592782e RS |
705 | #ifdef DOS_NT |
706 | && !IS_ANY_SEP (dst[slen - 2]) | |
707 | #endif | |
708 | ) | |
570d7624 | 709 | dst[slen - 1] = 0; |
199607e4 RS |
710 | #endif |
711 | #ifdef DOS_NT | |
712 | CORRECT_DIR_SEPS (dst); | |
125feee8 | 713 | #endif |
570d7624 JB |
714 | return 1; |
715 | } | |
716 | ||
717 | DEFUN ("directory-file-name", Fdirectory_file_name, Sdirectory_file_name, | |
718 | 1, 1, 0, | |
3b7f6e60 EN |
719 | "Returns the file name of the directory named DIRECTORY.\n\ |
720 | This is the name of the file that holds the data for the directory DIRECTORY.\n\ | |
570d7624 JB |
721 | This operation exists because a directory is also a file, but its name as\n\ |
722 | a directory is different from its name as a file.\n\ | |
723 | In Unix-syntax, this function just removes the final slash.\n\ | |
724 | On VMS, given a VMS-syntax directory name such as \"[X.Y]\",\n\ | |
725 | it returns a file name such as \"[X]Y.DIR.1\".") | |
726 | (directory) | |
727 | Lisp_Object directory; | |
728 | { | |
729 | char *buf; | |
0bf2eed2 | 730 | Lisp_Object handler; |
570d7624 JB |
731 | |
732 | CHECK_STRING (directory, 0); | |
733 | ||
265a9e55 | 734 | if (NILP (directory)) |
570d7624 | 735 | return Qnil; |
0bf2eed2 RS |
736 | |
737 | /* If the file name has special constructs in it, | |
738 | call the corresponding file handler. */ | |
49307295 | 739 | handler = Ffind_file_name_handler (directory, Qdirectory_file_name); |
0bf2eed2 RS |
740 | if (!NILP (handler)) |
741 | return call2 (handler, Qdirectory_file_name, directory); | |
742 | ||
570d7624 JB |
743 | #ifdef VMS |
744 | /* 20 extra chars is insufficient for VMS, since we might perform a | |
745 | logical name translation. an equivalence string can be up to 255 | |
746 | chars long, so grab that much extra space... - sss */ | |
747 | buf = (char *) alloca (XSTRING (directory)->size + 20 + 255); | |
748 | #else | |
749 | buf = (char *) alloca (XSTRING (directory)->size + 20); | |
750 | #endif | |
751 | directory_file_name (XSTRING (directory)->data, buf); | |
752 | return build_string (buf); | |
753 | } | |
754 | ||
755 | DEFUN ("make-temp-name", Fmake_temp_name, Smake_temp_name, 1, 1, 0, | |
756 | "Generate temporary file name (string) starting with PREFIX (a string).\n\ | |
757 | The Emacs process number forms part of the result,\n\ | |
758 | so there is no danger of generating a name being used by another process.") | |
759 | (prefix) | |
760 | Lisp_Object prefix; | |
761 | { | |
762 | Lisp_Object val; | |
3a3bfb18 | 763 | #ifdef MSDOS |
ce6212a5 | 764 | /* Don't use too many characters of the restricted 8+3 DOS |
3a3bfb18 | 765 | filename space. */ |
ce6212a5 | 766 | val = concat2 (prefix, build_string ("a.XXX")); |
3a3bfb18 | 767 | #else |
570d7624 | 768 | val = concat2 (prefix, build_string ("XXXXXX")); |
3a3bfb18 | 769 | #endif |
570d7624 | 770 | mktemp (XSTRING (val)->data); |
199607e4 RS |
771 | #ifdef DOS_NT |
772 | CORRECT_DIR_SEPS (XSTRING (val)->data); | |
773 | #endif | |
570d7624 JB |
774 | return val; |
775 | } | |
776 | \f | |
777 | DEFUN ("expand-file-name", Fexpand_file_name, Sexpand_file_name, 1, 2, 0, | |
3b7f6e60 EN |
778 | "Convert filename NAME to absolute, and canonicalize it.\n\ |
779 | Second arg DEFAULT-DIRECTORY is directory to start with if NAME is relative\n\ | |
780 | (does not start with slash); if DEFAULT-DIRECTORY is nil or missing,\n\ | |
570d7624 | 781 | the current buffer's value of default-directory is used.\n\ |
199607e4 RS |
782 | File name components that are `.' are removed, and \n\ |
783 | so are file name components followed by `..', along with the `..' itself;\n\ | |
b72dea2a | 784 | note that these simplifications are done without checking the resulting\n\ |
199607e4 | 785 | file names in the file system.\n\ |
b72dea2a JB |
786 | An initial `~/' expands to your home directory.\n\ |
787 | An initial `~USER/' expands to USER's home directory.\n\ | |
570d7624 | 788 | See also the function `substitute-in-file-name'.") |
3b7f6e60 EN |
789 | (name, default_directory) |
790 | Lisp_Object name, default_directory; | |
570d7624 JB |
791 | { |
792 | unsigned char *nm; | |
199607e4 | 793 | |
570d7624 JB |
794 | register unsigned char *newdir, *p, *o; |
795 | int tlen; | |
796 | unsigned char *target; | |
797 | struct passwd *pw; | |
570d7624 JB |
798 | #ifdef VMS |
799 | unsigned char * colon = 0; | |
800 | unsigned char * close = 0; | |
801 | unsigned char * slash = 0; | |
802 | unsigned char * brack = 0; | |
803 | int lbrack = 0, rbrack = 0; | |
804 | int dots = 0; | |
805 | #endif /* VMS */ | |
5e570b75 | 806 | #ifdef DOS_NT |
199607e4 | 807 | int drive = 0; |
9a1dc3be | 808 | int collapse_newdir = 1; |
5e570b75 | 809 | #endif /* DOS_NT */ |
199607e4 | 810 | int length; |
0bf2eed2 | 811 | Lisp_Object handler; |
199607e4 | 812 | |
570d7624 JB |
813 | CHECK_STRING (name, 0); |
814 | ||
0bf2eed2 RS |
815 | /* If the file name has special constructs in it, |
816 | call the corresponding file handler. */ | |
49307295 | 817 | handler = Ffind_file_name_handler (name, Qexpand_file_name); |
0bf2eed2 | 818 | if (!NILP (handler)) |
3b7f6e60 | 819 | return call3 (handler, Qexpand_file_name, name, default_directory); |
58fc9587 | 820 | |
3b7f6e60 EN |
821 | /* Use the buffer's default-directory if DEFAULT_DIRECTORY is omitted. */ |
822 | if (NILP (default_directory)) | |
823 | default_directory = current_buffer->directory; | |
824 | CHECK_STRING (default_directory, 1); | |
58fc9587 | 825 | |
3b7f6e60 | 826 | if (!NILP (default_directory)) |
273e0829 | 827 | { |
3b7f6e60 | 828 | handler = Ffind_file_name_handler (default_directory, Qexpand_file_name); |
273e0829 | 829 | if (!NILP (handler)) |
3b7f6e60 | 830 | return call3 (handler, Qexpand_file_name, name, default_directory); |
273e0829 | 831 | } |
0bf2eed2 | 832 | |
3b7f6e60 | 833 | o = XSTRING (default_directory)->data; |
5e570b75 | 834 | |
3b7f6e60 | 835 | /* Make sure DEFAULT_DIRECTORY is properly expanded. |
f14b1c68 | 836 | It would be better to do this down below where we actually use |
3b7f6e60 | 837 | default_directory. Unfortunately, calling Fexpand_file_name recursively |
f14b1c68 JB |
838 | could invoke GC, and the strings might be relocated. This would |
839 | be annoying because we have pointers into strings lying around | |
840 | that would need adjusting, and people would add new pointers to | |
841 | the code and forget to adjust them, resulting in intermittent bugs. | |
4ad827c5 RS |
842 | Putting this call here avoids all that crud. |
843 | ||
844 | The EQ test avoids infinite recursion. */ | |
3b7f6e60 | 845 | if (! NILP (default_directory) && !EQ (default_directory, name) |
199607e4 RS |
846 | /* Save time in some common cases - as long as default_directory |
847 | is not relative, it can be canonicalized with name below (if it | |
848 | is needed at all) without requiring it to be expanded now. */ | |
01937013 | 849 | #ifdef DOS_NT |
199607e4 RS |
850 | /* Detect MSDOS file names with drive specifiers. */ |
851 | && ! (IS_DRIVE (o[0]) && (IS_DEVICE_SEP (o[1]) && IS_DIRECTORY_SEP (o[2]))) | |
852 | #ifdef WINDOWSNT | |
853 | /* Detect Windows file names in UNC format. */ | |
854 | && ! (IS_DIRECTORY_SEP (o[0]) && IS_DIRECTORY_SEP (o[1])) | |
01937013 | 855 | #endif |
199607e4 RS |
856 | #else /* not DOS_NT */ |
857 | /* Detect Unix absolute file names (/... alone is not absolute on | |
858 | DOS or Windows). */ | |
859 | && ! (IS_DIRECTORY_SEP (o[0])) | |
860 | #endif /* not DOS_NT */ | |
861 | ) | |
f14b1c68 JB |
862 | { |
863 | struct gcpro gcpro1; | |
864 | ||
865 | GCPRO1 (name); | |
3b7f6e60 | 866 | default_directory = Fexpand_file_name (default_directory, Qnil); |
f14b1c68 JB |
867 | UNGCPRO; |
868 | } | |
869 | ||
570d7624 JB |
870 | #ifdef VMS |
871 | /* Filenames on VMS are always upper case. */ | |
872 | name = Fupcase (name); | |
873 | #endif | |
4c3c22f3 RS |
874 | #ifdef FILE_SYSTEM_CASE |
875 | name = FILE_SYSTEM_CASE (name); | |
876 | #endif | |
570d7624 JB |
877 | |
878 | nm = XSTRING (name)->data; | |
a5a1cc06 | 879 | |
5e570b75 | 880 | #ifdef DOS_NT |
199607e4 RS |
881 | /* We will force directory separators to be either all \ or /, so make |
882 | a local copy to modify, even if there ends up being no change. */ | |
883 | nm = strcpy (alloca (strlen (nm) + 1), nm); | |
884 | ||
885 | /* Find and remove drive specifier if present; this makes nm absolute | |
886 | even if the rest of the name appears to be relative. */ | |
4c3c22f3 RS |
887 | { |
888 | unsigned char *colon = rindex (nm, ':'); | |
199607e4 | 889 | |
4c3c22f3 | 890 | if (colon) |
199607e4 RS |
891 | /* Only recognize colon as part of drive specifier if there is a |
892 | single alphabetic character preceeding the colon (and if the | |
893 | character before the drive letter, if present, is a directory | |
894 | separator); this is to support the remote system syntax used by | |
895 | ange-ftp, and the "po:username" syntax for POP mailboxes. */ | |
896 | look_again: | |
4c3c22f3 RS |
897 | if (nm == colon) |
898 | nm++; | |
199607e4 RS |
899 | else if (IS_DRIVE (colon[-1]) |
900 | && (colon == nm + 1 || IS_DIRECTORY_SEP (colon[-2]))) | |
4c3c22f3 | 901 | { |
3c455a3b | 902 | drive = colon[-1]; |
4c3c22f3 | 903 | nm = colon + 1; |
199607e4 RS |
904 | } |
905 | else | |
906 | { | |
907 | while (--colon >= nm) | |
908 | if (colon[0] == ':') | |
909 | goto look_again; | |
910 | } | |
4c3c22f3 | 911 | } |
5e570b75 | 912 | #endif /* DOS_NT */ |
4c3c22f3 | 913 | |
199607e4 RS |
914 | #ifdef WINDOWSNT |
915 | /* Discard any previous drive specifier if nm is now in UNC format. */ | |
916 | if (IS_DIRECTORY_SEP (nm[0]) && IS_DIRECTORY_SEP (nm[1])) | |
917 | { | |
918 | drive = 0; | |
919 | } | |
920 | #endif | |
921 | ||
922 | /* If nm is absolute, look for /./ or /../ sequences; if none are | |
923 | found, we can probably return right away. We will avoid allocating | |
924 | a new string if name is already fully expanded. */ | |
570d7624 | 925 | if ( |
5e570b75 | 926 | IS_DIRECTORY_SEP (nm[0]) |
199607e4 RS |
927 | #ifdef MSDOS |
928 | && drive | |
929 | #endif | |
930 | #ifdef WINDOWSNT | |
931 | && (drive || IS_DIRECTORY_SEP (nm[1])) | |
932 | #endif | |
570d7624 JB |
933 | #ifdef VMS |
934 | || index (nm, ':') | |
935 | #endif /* VMS */ | |
936 | ) | |
937 | { | |
f14b1c68 JB |
938 | /* If it turns out that the filename we want to return is just a |
939 | suffix of FILENAME, we don't need to go through and edit | |
940 | things; we just need to construct a new string using data | |
941 | starting at the middle of FILENAME. If we set lose to a | |
942 | non-zero value, that means we've discovered that we can't do | |
943 | that cool trick. */ | |
944 | int lose = 0; | |
945 | ||
570d7624 | 946 | p = nm; |
570d7624 JB |
947 | while (*p) |
948 | { | |
199607e4 | 949 | /* Since we know the name is absolute, we can assume that each |
c77d647e JB |
950 | element starts with a "/". */ |
951 | ||
c77d647e | 952 | /* "." and ".." are hairy. */ |
5e570b75 | 953 | if (IS_DIRECTORY_SEP (p[0]) |
c77d647e | 954 | && p[1] == '.' |
5e570b75 | 955 | && (IS_DIRECTORY_SEP (p[2]) |
c77d647e | 956 | || p[2] == 0 |
5e570b75 | 957 | || (p[2] == '.' && (IS_DIRECTORY_SEP (p[3]) |
c77d647e | 958 | || p[3] == 0)))) |
570d7624 JB |
959 | lose = 1; |
960 | #ifdef VMS | |
961 | if (p[0] == '\\') | |
962 | lose = 1; | |
963 | if (p[0] == '/') { | |
964 | /* if dev:[dir]/, move nm to / */ | |
965 | if (!slash && p > nm && (brack || colon)) { | |
966 | nm = (brack ? brack + 1 : colon + 1); | |
967 | lbrack = rbrack = 0; | |
968 | brack = 0; | |
969 | colon = 0; | |
970 | } | |
971 | slash = p; | |
972 | } | |
973 | if (p[0] == '-') | |
974 | #ifndef VMS4_4 | |
975 | /* VMS pre V4.4,convert '-'s in filenames. */ | |
976 | if (lbrack == rbrack) | |
977 | { | |
5e570b75 | 978 | if (dots < 2) /* this is to allow negative version numbers */ |
570d7624 JB |
979 | p[0] = '_'; |
980 | } | |
981 | else | |
982 | #endif /* VMS4_4 */ | |
983 | if (lbrack > rbrack && | |
984 | ((p[-1] == '.' || p[-1] == '[' || p[-1] == '<') && | |
985 | (p[1] == '.' || p[1] == ']' || p[1] == '>'))) | |
986 | lose = 1; | |
987 | #ifndef VMS4_4 | |
988 | else | |
989 | p[0] = '_'; | |
990 | #endif /* VMS4_4 */ | |
991 | /* count open brackets, reset close bracket pointer */ | |
992 | if (p[0] == '[' || p[0] == '<') | |
993 | lbrack++, brack = 0; | |
994 | /* count close brackets, set close bracket pointer */ | |
995 | if (p[0] == ']' || p[0] == '>') | |
996 | rbrack++, brack = p; | |
997 | /* detect ][ or >< */ | |
998 | if ((p[0] == ']' || p[0] == '>') && (p[1] == '[' || p[1] == '<')) | |
999 | lose = 1; | |
1000 | if ((p[0] == ':' || p[0] == ']' || p[0] == '>') && p[1] == '~') | |
1001 | nm = p + 1, lose = 1; | |
1002 | if (p[0] == ':' && (colon || slash)) | |
1003 | /* if dev1:[dir]dev2:, move nm to dev2: */ | |
1004 | if (brack) | |
1005 | { | |
1006 | nm = brack + 1; | |
1007 | brack = 0; | |
1008 | } | |
199607e4 | 1009 | /* if /name/dev:, move nm to dev: */ |
570d7624 JB |
1010 | else if (slash) |
1011 | nm = slash + 1; | |
1012 | /* if node::dev:, move colon following dev */ | |
1013 | else if (colon && colon[-1] == ':') | |
1014 | colon = p; | |
1015 | /* if dev1:dev2:, move nm to dev2: */ | |
1016 | else if (colon && colon[-1] != ':') | |
1017 | { | |
1018 | nm = colon + 1; | |
1019 | colon = 0; | |
1020 | } | |
1021 | if (p[0] == ':' && !colon) | |
1022 | { | |
1023 | if (p[1] == ':') | |
1024 | p++; | |
1025 | colon = p; | |
1026 | } | |
1027 | if (lbrack == rbrack) | |
1028 | if (p[0] == ';') | |
1029 | dots = 2; | |
1030 | else if (p[0] == '.') | |
1031 | dots++; | |
1032 | #endif /* VMS */ | |
1033 | p++; | |
1034 | } | |
1035 | if (!lose) | |
1036 | { | |
1037 | #ifdef VMS | |
1038 | if (index (nm, '/')) | |
1039 | return build_string (sys_translate_unix (nm)); | |
1040 | #endif /* VMS */ | |
199607e4 RS |
1041 | #ifdef DOS_NT |
1042 | /* Make sure directories are all separated with / or \ as | |
1043 | desired, but avoid allocation of a new string when not | |
1044 | required. */ | |
1045 | CORRECT_DIR_SEPS (nm); | |
1046 | #ifdef WINDOWSNT | |
1047 | if (IS_DIRECTORY_SEP (nm[1])) | |
1048 | { | |
1049 | if (strcmp (nm, XSTRING (name)->data) != 0) | |
1050 | name = build_string (nm); | |
1051 | } | |
1052 | else | |
1053 | #endif | |
1054 | /* drive must be set, so this is okay */ | |
1055 | if (strcmp (nm - 2, XSTRING (name)->data) != 0) | |
1056 | { | |
1057 | name = make_string (nm - 2, p - nm + 2); | |
f94988a7 | 1058 | XSTRING (name)->data[0] = DRIVE_LETTER (drive); |
199607e4 RS |
1059 | XSTRING (name)->data[1] = ':'; |
1060 | } | |
1061 | return name; | |
1062 | #else /* not DOS_NT */ | |
570d7624 JB |
1063 | if (nm == XSTRING (name)->data) |
1064 | return name; | |
1065 | return build_string (nm); | |
5e570b75 | 1066 | #endif /* not DOS_NT */ |
570d7624 JB |
1067 | } |
1068 | } | |
1069 | ||
199607e4 RS |
1070 | /* At this point, nm might or might not be an absolute file name. We |
1071 | need to expand ~ or ~user if present, otherwise prefix nm with | |
1072 | default_directory if nm is not absolute, and finally collapse /./ | |
1073 | and /foo/../ sequences. | |
1074 | ||
1075 | We set newdir to be the appropriate prefix if one is needed: | |
1076 | - the relevant user directory if nm starts with ~ or ~user | |
1077 | - the specified drive's working dir (DOS/NT only) if nm does not | |
1078 | start with / | |
1079 | - the value of default_directory. | |
1080 | ||
1081 | Note that these prefixes are not guaranteed to be absolute (except | |
1082 | for the working dir of a drive). Therefore, to ensure we always | |
1083 | return an absolute name, if the final prefix is not absolute we | |
1084 | append it to the current working directory. */ | |
570d7624 JB |
1085 | |
1086 | newdir = 0; | |
1087 | ||
1088 | if (nm[0] == '~') /* prefix ~ */ | |
c77d647e | 1089 | { |
5e570b75 | 1090 | if (IS_DIRECTORY_SEP (nm[1]) |
570d7624 | 1091 | #ifdef VMS |
c77d647e | 1092 | || nm[1] == ':' |
5e570b75 | 1093 | #endif /* VMS */ |
c77d647e JB |
1094 | || nm[1] == 0) /* ~ by itself */ |
1095 | { | |
1096 | if (!(newdir = (unsigned char *) egetenv ("HOME"))) | |
1097 | newdir = (unsigned char *) ""; | |
199607e4 | 1098 | nm++; |
5e570b75 | 1099 | #ifdef DOS_NT |
9a1dc3be | 1100 | collapse_newdir = 0; |
4c3c22f3 | 1101 | #endif |
570d7624 | 1102 | #ifdef VMS |
c77d647e | 1103 | nm++; /* Don't leave the slash in nm. */ |
5e570b75 | 1104 | #endif /* VMS */ |
c77d647e JB |
1105 | } |
1106 | else /* ~user/filename */ | |
1107 | { | |
5e570b75 | 1108 | for (p = nm; *p && (!IS_DIRECTORY_SEP (*p) |
570d7624 | 1109 | #ifdef VMS |
c77d647e | 1110 | && *p != ':' |
5e570b75 | 1111 | #endif /* VMS */ |
c77d647e JB |
1112 | ); p++); |
1113 | o = (unsigned char *) alloca (p - nm + 1); | |
1114 | bcopy ((char *) nm, o, p - nm); | |
1115 | o [p - nm] = 0; | |
1116 | ||
1117 | pw = (struct passwd *) getpwnam (o + 1); | |
1118 | if (pw) | |
1119 | { | |
1120 | newdir = (unsigned char *) pw -> pw_dir; | |
570d7624 | 1121 | #ifdef VMS |
c77d647e | 1122 | nm = p + 1; /* skip the terminator */ |
570d7624 | 1123 | #else |
c77d647e | 1124 | nm = p; |
199607e4 | 1125 | #ifdef DOS_NT |
9a1dc3be | 1126 | collapse_newdir = 0; |
199607e4 | 1127 | #endif |
5e570b75 | 1128 | #endif /* VMS */ |
c77d647e | 1129 | } |
e5d77022 | 1130 | |
c77d647e JB |
1131 | /* If we don't find a user of that name, leave the name |
1132 | unchanged; don't move nm forward to p. */ | |
1133 | } | |
1134 | } | |
570d7624 | 1135 | |
5e570b75 | 1136 | #ifdef DOS_NT |
199607e4 RS |
1137 | /* On DOS and Windows, nm is absolute if a drive name was specified; |
1138 | use the drive's current directory as the prefix if needed. */ | |
1139 | if (!newdir && drive) | |
1140 | { | |
1141 | /* Get default directory if needed to make nm absolute. */ | |
1142 | if (!IS_DIRECTORY_SEP (nm[0])) | |
1143 | { | |
1144 | newdir = alloca (MAXPATHLEN + 1); | |
1145 | if (!getdefdir (toupper (drive) - 'A' + 1, newdir)) | |
1146 | newdir = NULL; | |
1147 | } | |
1148 | if (!newdir) | |
1149 | { | |
1150 | /* Either nm starts with /, or drive isn't mounted. */ | |
1151 | newdir = alloca (4); | |
f94988a7 | 1152 | newdir[0] = DRIVE_LETTER (drive); |
199607e4 RS |
1153 | newdir[1] = ':'; |
1154 | newdir[2] = '/'; | |
1155 | newdir[3] = 0; | |
1156 | } | |
1157 | } | |
5e570b75 | 1158 | #endif /* DOS_NT */ |
199607e4 RS |
1159 | |
1160 | /* Finally, if no prefix has been specified and nm is not absolute, | |
1161 | then it must be expanded relative to default_directory. */ | |
1162 | ||
34097368 | 1163 | if (1 |
199607e4 RS |
1164 | #ifndef DOS_NT |
1165 | /* /... alone is not absolute on DOS and Windows. */ | |
34097368 | 1166 | && !IS_DIRECTORY_SEP (nm[0]) |
199607e4 RS |
1167 | #endif |
1168 | #ifdef WINDOWSNT | |
34097368 | 1169 | && !(IS_DIRECTORY_SEP (nm[0]) && IS_DIRECTORY_SEP (nm[1])) |
199607e4 RS |
1170 | #endif |
1171 | #ifdef VMS | |
1172 | && !index (nm, ':') | |
1173 | #endif | |
570d7624 JB |
1174 | && !newdir) |
1175 | { | |
3b7f6e60 | 1176 | newdir = XSTRING (default_directory)->data; |
570d7624 JB |
1177 | } |
1178 | ||
5e570b75 | 1179 | #ifdef DOS_NT |
199607e4 RS |
1180 | if (newdir) |
1181 | { | |
1182 | /* First ensure newdir is an absolute name. */ | |
1183 | if ( | |
1184 | /* Detect MSDOS file names with drive specifiers. */ | |
1185 | ! (IS_DRIVE (newdir[0]) | |
1186 | && IS_DEVICE_SEP (newdir[1]) && IS_DIRECTORY_SEP (newdir[2])) | |
1187 | #ifdef WINDOWSNT | |
1188 | /* Detect Windows file names in UNC format. */ | |
1189 | && ! (IS_DIRECTORY_SEP (newdir[0]) && IS_DIRECTORY_SEP (newdir[1])) | |
1190 | #endif | |
1191 | ) | |
1192 | { | |
1193 | /* Effectively, let newdir be (expand-file-name newdir cwd). | |
1194 | Because of the admonition against calling expand-file-name | |
1195 | when we have pointers into lisp strings, we accomplish this | |
1196 | indirectly by prepending newdir to nm if necessary, and using | |
1197 | cwd (or the wd of newdir's drive) as the new newdir. */ | |
1198 | ||
1199 | if (IS_DRIVE (newdir[0]) && newdir[1] == ':') | |
1200 | { | |
1201 | drive = newdir[0]; | |
1202 | newdir += 2; | |
1203 | } | |
1204 | if (!IS_DIRECTORY_SEP (nm[0])) | |
1205 | { | |
1206 | char * tmp = alloca (strlen (newdir) + strlen (nm) + 2); | |
1207 | file_name_as_directory (tmp, newdir); | |
1208 | strcat (tmp, nm); | |
1209 | nm = tmp; | |
1210 | } | |
1211 | newdir = alloca (MAXPATHLEN + 1); | |
1212 | if (drive) | |
1213 | { | |
1214 | if (!getdefdir (toupper (drive) - 'A' + 1, newdir)) | |
1215 | newdir = "/"; | |
1216 | } | |
1217 | else | |
1218 | getwd (newdir); | |
1219 | } | |
1220 | ||
1221 | /* Strip off drive name from prefix, if present. */ | |
1222 | if (IS_DRIVE (newdir[0]) && newdir[1] == ':') | |
1223 | { | |
1224 | drive = newdir[0]; | |
1225 | newdir += 2; | |
1226 | } | |
1227 | ||
1228 | /* Keep only a prefix from newdir if nm starts with slash | |
1229 | (//server/share for UNC, nothing otherwise). */ | |
9a1dc3be | 1230 | if (IS_DIRECTORY_SEP (nm[0]) && collapse_newdir) |
199607e4 RS |
1231 | { |
1232 | #ifdef WINDOWSNT | |
1233 | if (IS_DIRECTORY_SEP (newdir[0]) && IS_DIRECTORY_SEP (newdir[1])) | |
1234 | { | |
1235 | newdir = strcpy (alloca (strlen (newdir) + 1), newdir); | |
1236 | p = newdir + 2; | |
1237 | while (*p && !IS_DIRECTORY_SEP (*p)) p++; | |
1238 | p++; | |
1239 | while (*p && !IS_DIRECTORY_SEP (*p)) p++; | |
1240 | *p = 0; | |
1241 | } | |
1242 | else | |
1243 | #endif | |
1244 | newdir = ""; | |
1245 | } | |
1246 | } | |
5e570b75 | 1247 | #endif /* DOS_NT */ |
199607e4 RS |
1248 | |
1249 | if (newdir) | |
bfb61299 | 1250 | { |
57676091 RS |
1251 | /* Get rid of any slash at the end of newdir, unless newdir is |
1252 | just // (an incomplete UNC name). */ | |
199607e4 | 1253 | length = strlen (newdir); |
15fc2f8c | 1254 | if (length > 0 && IS_DIRECTORY_SEP (newdir[length - 1]) |
57676091 RS |
1255 | #ifdef WINDOWSNT |
1256 | && !(length == 2 && IS_DIRECTORY_SEP (newdir[0])) | |
1257 | #endif | |
1258 | ) | |
bfb61299 JB |
1259 | { |
1260 | unsigned char *temp = (unsigned char *) alloca (length); | |
1261 | bcopy (newdir, temp, length - 1); | |
1262 | temp[length - 1] = 0; | |
1263 | newdir = temp; | |
1264 | } | |
1265 | tlen = length + 1; | |
1266 | } | |
1267 | else | |
1268 | tlen = 0; | |
570d7624 | 1269 | |
bfb61299 JB |
1270 | /* Now concatenate the directory and name to new space in the stack frame */ |
1271 | tlen += strlen (nm) + 1; | |
5e570b75 | 1272 | #ifdef DOS_NT |
199607e4 | 1273 | /* Add reserved space for drive name. (The Microsoft x86 compiler |
5e570b75 RS |
1274 | produces incorrect code if the following two lines are combined.) */ |
1275 | target = (unsigned char *) alloca (tlen + 2); | |
1276 | target += 2; | |
1277 | #else /* not DOS_NT */ | |
570d7624 | 1278 | target = (unsigned char *) alloca (tlen); |
5e570b75 | 1279 | #endif /* not DOS_NT */ |
570d7624 JB |
1280 | *target = 0; |
1281 | ||
1282 | if (newdir) | |
1283 | { | |
1284 | #ifndef VMS | |
5e570b75 | 1285 | if (nm[0] == 0 || IS_DIRECTORY_SEP (nm[0])) |
570d7624 JB |
1286 | strcpy (target, newdir); |
1287 | else | |
1288 | #endif | |
c77d647e | 1289 | file_name_as_directory (target, newdir); |
570d7624 JB |
1290 | } |
1291 | ||
1292 | strcat (target, nm); | |
1293 | #ifdef VMS | |
1294 | if (index (target, '/')) | |
1295 | strcpy (target, sys_translate_unix (target)); | |
1296 | #endif /* VMS */ | |
1297 | ||
199607e4 RS |
1298 | /* ASSERT (IS_DIRECTORY_SEP (target[0])) if not VMS */ |
1299 | ||
c77d647e | 1300 | /* Now canonicalize by removing /. and /foo/.. if they appear. */ |
570d7624 JB |
1301 | |
1302 | p = target; | |
1303 | o = target; | |
1304 | ||
1305 | while (*p) | |
1306 | { | |
1307 | #ifdef VMS | |
1308 | if (*p != ']' && *p != '>' && *p != '-') | |
1309 | { | |
1310 | if (*p == '\\') | |
1311 | p++; | |
1312 | *o++ = *p++; | |
1313 | } | |
1314 | else if ((p[0] == ']' || p[0] == '>') && p[0] == p[1] + 2) | |
1315 | /* brackets are offset from each other by 2 */ | |
1316 | { | |
1317 | p += 2; | |
1318 | if (*p != '.' && *p != '-' && o[-1] != '.') | |
1319 | /* convert [foo][bar] to [bar] */ | |
1320 | while (o[-1] != '[' && o[-1] != '<') | |
1321 | o--; | |
1322 | else if (*p == '-' && *o != '.') | |
1323 | *--p = '.'; | |
1324 | } | |
1325 | else if (p[0] == '-' && o[-1] == '.' && | |
1326 | (p[1] == '.' || p[1] == ']' || p[1] == '>')) | |
1327 | /* flush .foo.- ; leave - if stopped by '[' or '<' */ | |
1328 | { | |
1329 | do | |
1330 | o--; | |
1331 | while (o[-1] != '.' && o[-1] != '[' && o[-1] != '<'); | |
5e570b75 | 1332 | if (p[1] == '.') /* foo.-.bar ==> bar. */ |
570d7624 JB |
1333 | p += 2; |
1334 | else if (o[-1] == '.') /* '.foo.-]' ==> ']' */ | |
1335 | p++, o--; | |
1336 | /* else [foo.-] ==> [-] */ | |
1337 | } | |
1338 | else | |
1339 | { | |
1340 | #ifndef VMS4_4 | |
1341 | if (*p == '-' && | |
1342 | o[-1] != '[' && o[-1] != '<' && o[-1] != '.' && | |
1343 | p[1] != ']' && p[1] != '>' && p[1] != '.') | |
1344 | *p = '_'; | |
1345 | #endif /* VMS4_4 */ | |
1346 | *o++ = *p++; | |
1347 | } | |
1348 | #else /* not VMS */ | |
5e570b75 RS |
1349 | if (!IS_DIRECTORY_SEP (*p)) |
1350 | { | |
570d7624 JB |
1351 | *o++ = *p++; |
1352 | } | |
c0fa5a0b KH |
1353 | else if (IS_DIRECTORY_SEP (p[0]) && IS_DIRECTORY_SEP (p[1]) |
1354 | #if defined (APOLLO) || defined (WINDOWSNT) | |
199607e4 | 1355 | /* // at start of filename is meaningful in Apollo |
c0fa5a0b | 1356 | and WindowsNT systems */ |
570d7624 | 1357 | && o != target |
199607e4 | 1358 | #endif /* APOLLO || WINDOWSNT */ |
570d7624 JB |
1359 | ) |
1360 | { | |
1361 | o = target; | |
1362 | p++; | |
1363 | } | |
5e570b75 | 1364 | else if (IS_DIRECTORY_SEP (p[0]) |
c77d647e | 1365 | && p[1] == '.' |
5e570b75 | 1366 | && (IS_DIRECTORY_SEP (p[2]) |
c77d647e JB |
1367 | || p[2] == 0)) |
1368 | { | |
1369 | /* If "/." is the entire filename, keep the "/". Otherwise, | |
1370 | just delete the whole "/.". */ | |
1371 | if (o == target && p[2] == '\0') | |
1372 | *o++ = *p; | |
1373 | p += 2; | |
1374 | } | |
c0fa5a0b | 1375 | else if (IS_DIRECTORY_SEP (p[0]) && p[1] == '.' && p[2] == '.' |
570d7624 JB |
1376 | /* `/../' is the "superroot" on certain file systems. */ |
1377 | && o != target | |
5e570b75 | 1378 | && (IS_DIRECTORY_SEP (p[3]) || p[3] == 0)) |
570d7624 | 1379 | { |
5e570b75 | 1380 | while (o != target && (--o) && !IS_DIRECTORY_SEP (*o)) |
570d7624 | 1381 | ; |
795de720 RS |
1382 | /* Keep initial / only if this is the whole name. */ |
1383 | if (o == target && IS_ANY_SEP (*o) && p[3] == 0) | |
51b1d12e | 1384 | ++o; |
570d7624 JB |
1385 | p += 3; |
1386 | } | |
1387 | else | |
5e570b75 | 1388 | { |
570d7624 JB |
1389 | *o++ = *p++; |
1390 | } | |
1391 | #endif /* not VMS */ | |
1392 | } | |
1393 | ||
5e570b75 | 1394 | #ifdef DOS_NT |
199607e4 | 1395 | /* At last, set drive name. */ |
5e570b75 | 1396 | #ifdef WINDOWSNT |
199607e4 RS |
1397 | /* Except for network file name. */ |
1398 | if (!(IS_DIRECTORY_SEP (target[0]) && IS_DIRECTORY_SEP (target[1]))) | |
5e570b75 | 1399 | #endif /* WINDOWSNT */ |
4c3c22f3 | 1400 | { |
199607e4 | 1401 | if (!drive) abort (); |
4c3c22f3 | 1402 | target -= 2; |
f94988a7 | 1403 | target[0] = DRIVE_LETTER (drive); |
4c3c22f3 RS |
1404 | target[1] = ':'; |
1405 | } | |
199607e4 | 1406 | CORRECT_DIR_SEPS (target); |
5e570b75 | 1407 | #endif /* DOS_NT */ |
4c3c22f3 | 1408 | |
570d7624 JB |
1409 | return make_string (target, o - target); |
1410 | } | |
5e570b75 | 1411 | |
570d7624 | 1412 | #if 0 |
5e570b75 | 1413 | /* Changed this DEFUN to a DEAFUN, so as not to confuse `make-docfile'. */ |
e5d77022 | 1414 | DEAFUN ("expand-file-name", Fexpand_file_name, Sexpand_file_name, 1, 2, 0, |
570d7624 JB |
1415 | "Convert FILENAME to absolute, and canonicalize it.\n\ |
1416 | Second arg DEFAULT is directory to start with if FILENAME is relative\n\ | |
1417 | (does not start with slash); if DEFAULT is nil or missing,\n\ | |
1418 | the current buffer's value of default-directory is used.\n\ | |
1419 | Filenames containing `.' or `..' as components are simplified;\n\ | |
1420 | initial `~/' expands to your home directory.\n\ | |
1421 | See also the function `substitute-in-file-name'.") | |
1422 | (name, defalt) | |
1423 | Lisp_Object name, defalt; | |
1424 | { | |
1425 | unsigned char *nm; | |
199607e4 | 1426 | |
570d7624 JB |
1427 | register unsigned char *newdir, *p, *o; |
1428 | int tlen; | |
1429 | unsigned char *target; | |
1430 | struct passwd *pw; | |
1431 | int lose; | |
1432 | #ifdef VMS | |
1433 | unsigned char * colon = 0; | |
1434 | unsigned char * close = 0; | |
1435 | unsigned char * slash = 0; | |
1436 | unsigned char * brack = 0; | |
1437 | int lbrack = 0, rbrack = 0; | |
1438 | int dots = 0; | |
1439 | #endif /* VMS */ | |
199607e4 | 1440 | |
570d7624 JB |
1441 | CHECK_STRING (name, 0); |
1442 | ||
1443 | #ifdef VMS | |
1444 | /* Filenames on VMS are always upper case. */ | |
1445 | name = Fupcase (name); | |
1446 | #endif | |
1447 | ||
1448 | nm = XSTRING (name)->data; | |
199607e4 | 1449 | |
570d7624 JB |
1450 | /* If nm is absolute, flush ...// and detect /./ and /../. |
1451 | If no /./ or /../ we can return right away. */ | |
1452 | if ( | |
1453 | nm[0] == '/' | |
1454 | #ifdef VMS | |
1455 | || index (nm, ':') | |
1456 | #endif /* VMS */ | |
1457 | ) | |
1458 | { | |
1459 | p = nm; | |
1460 | lose = 0; | |
1461 | while (*p) | |
1462 | { | |
1463 | if (p[0] == '/' && p[1] == '/' | |
1464 | #ifdef APOLLO | |
1465 | /* // at start of filename is meaningful on Apollo system */ | |
1466 | && nm != p | |
1467 | #endif /* APOLLO */ | |
1468 | ) | |
1469 | nm = p + 1; | |
1470 | if (p[0] == '/' && p[1] == '~') | |
1471 | nm = p + 1, lose = 1; | |
1472 | if (p[0] == '/' && p[1] == '.' | |
1473 | && (p[2] == '/' || p[2] == 0 | |
1474 | || (p[2] == '.' && (p[3] == '/' || p[3] == 0)))) | |
1475 | lose = 1; | |
1476 | #ifdef VMS | |
1477 | if (p[0] == '\\') | |
1478 | lose = 1; | |
1479 | if (p[0] == '/') { | |
1480 | /* if dev:[dir]/, move nm to / */ | |
1481 | if (!slash && p > nm && (brack || colon)) { | |
1482 | nm = (brack ? brack + 1 : colon + 1); | |
1483 | lbrack = rbrack = 0; | |
1484 | brack = 0; | |
1485 | colon = 0; | |
1486 | } | |
1487 | slash = p; | |
1488 | } | |
1489 | if (p[0] == '-') | |
1490 | #ifndef VMS4_4 | |
1491 | /* VMS pre V4.4,convert '-'s in filenames. */ | |
1492 | if (lbrack == rbrack) | |
1493 | { | |
5e570b75 | 1494 | if (dots < 2) /* this is to allow negative version numbers */ |
570d7624 JB |
1495 | p[0] = '_'; |
1496 | } | |
1497 | else | |
1498 | #endif /* VMS4_4 */ | |
1499 | if (lbrack > rbrack && | |
1500 | ((p[-1] == '.' || p[-1] == '[' || p[-1] == '<') && | |
1501 | (p[1] == '.' || p[1] == ']' || p[1] == '>'))) | |
1502 | lose = 1; | |
1503 | #ifndef VMS4_4 | |
1504 | else | |
1505 | p[0] = '_'; | |
1506 | #endif /* VMS4_4 */ | |
1507 | /* count open brackets, reset close bracket pointer */ | |
1508 | if (p[0] == '[' || p[0] == '<') | |
1509 | lbrack++, brack = 0; | |
1510 | /* count close brackets, set close bracket pointer */ | |
1511 | if (p[0] == ']' || p[0] == '>') | |
1512 | rbrack++, brack = p; | |
1513 | /* detect ][ or >< */ | |
1514 | if ((p[0] == ']' || p[0] == '>') && (p[1] == '[' || p[1] == '<')) | |
1515 | lose = 1; | |
1516 | if ((p[0] == ':' || p[0] == ']' || p[0] == '>') && p[1] == '~') | |
1517 | nm = p + 1, lose = 1; | |
1518 | if (p[0] == ':' && (colon || slash)) | |
1519 | /* if dev1:[dir]dev2:, move nm to dev2: */ | |
1520 | if (brack) | |
1521 | { | |
1522 | nm = brack + 1; | |
1523 | brack = 0; | |
1524 | } | |
199607e4 | 1525 | /* If /name/dev:, move nm to dev: */ |
570d7624 JB |
1526 | else if (slash) |
1527 | nm = slash + 1; | |
199607e4 | 1528 | /* If node::dev:, move colon following dev */ |
570d7624 JB |
1529 | else if (colon && colon[-1] == ':') |
1530 | colon = p; | |
199607e4 | 1531 | /* If dev1:dev2:, move nm to dev2: */ |
570d7624 JB |
1532 | else if (colon && colon[-1] != ':') |
1533 | { | |
1534 | nm = colon + 1; | |
1535 | colon = 0; | |
1536 | } | |
1537 | if (p[0] == ':' && !colon) | |
1538 | { | |
1539 | if (p[1] == ':') | |
1540 | p++; | |
1541 | colon = p; | |
1542 | } | |
1543 | if (lbrack == rbrack) | |
1544 | if (p[0] == ';') | |
1545 | dots = 2; | |
1546 | else if (p[0] == '.') | |
1547 | dots++; | |
1548 | #endif /* VMS */ | |
1549 | p++; | |
1550 | } | |
1551 | if (!lose) | |
1552 | { | |
1553 | #ifdef VMS | |
1554 | if (index (nm, '/')) | |
1555 | return build_string (sys_translate_unix (nm)); | |
1556 | #endif /* VMS */ | |
1557 | if (nm == XSTRING (name)->data) | |
1558 | return name; | |
1559 | return build_string (nm); | |
1560 | } | |
1561 | } | |
1562 | ||
1563 | /* Now determine directory to start with and put it in NEWDIR */ | |
1564 | ||
1565 | newdir = 0; | |
1566 | ||
5e570b75 | 1567 | if (nm[0] == '~') /* prefix ~ */ |
570d7624 JB |
1568 | if (nm[1] == '/' |
1569 | #ifdef VMS | |
1570 | || nm[1] == ':' | |
1571 | #endif /* VMS */ | |
1572 | || nm[1] == 0)/* ~/filename */ | |
1573 | { | |
1574 | if (!(newdir = (unsigned char *) egetenv ("HOME"))) | |
1575 | newdir = (unsigned char *) ""; | |
1576 | nm++; | |
1577 | #ifdef VMS | |
5e570b75 | 1578 | nm++; /* Don't leave the slash in nm. */ |
570d7624 JB |
1579 | #endif /* VMS */ |
1580 | } | |
1581 | else /* ~user/filename */ | |
1582 | { | |
1583 | /* Get past ~ to user */ | |
1584 | unsigned char *user = nm + 1; | |
1585 | /* Find end of name. */ | |
1586 | unsigned char *ptr = (unsigned char *) index (user, '/'); | |
1587 | int len = ptr ? ptr - user : strlen (user); | |
1588 | #ifdef VMS | |
1589 | unsigned char *ptr1 = index (user, ':'); | |
1590 | if (ptr1 != 0 && ptr1 - user < len) | |
1591 | len = ptr1 - user; | |
5e570b75 | 1592 | #endif /* VMS */ |
570d7624 JB |
1593 | /* Copy the user name into temp storage. */ |
1594 | o = (unsigned char *) alloca (len + 1); | |
1595 | bcopy ((char *) user, o, len); | |
1596 | o[len] = 0; | |
1597 | ||
1598 | /* Look up the user name. */ | |
1599 | pw = (struct passwd *) getpwnam (o + 1); | |
1600 | if (!pw) | |
1601 | error ("\"%s\" isn't a registered user", o + 1); | |
1602 | ||
1603 | newdir = (unsigned char *) pw->pw_dir; | |
1604 | ||
1605 | /* Discard the user name from NM. */ | |
1606 | nm += len; | |
1607 | } | |
1608 | ||
1609 | if (nm[0] != '/' | |
1610 | #ifdef VMS | |
1611 | && !index (nm, ':') | |
1612 | #endif /* not VMS */ | |
1613 | && !newdir) | |
1614 | { | |
265a9e55 | 1615 | if (NILP (defalt)) |
570d7624 JB |
1616 | defalt = current_buffer->directory; |
1617 | CHECK_STRING (defalt, 1); | |
1618 | newdir = XSTRING (defalt)->data; | |
1619 | } | |
1620 | ||
1621 | /* Now concatenate the directory and name to new space in the stack frame */ | |
1622 | ||
1623 | tlen = (newdir ? strlen (newdir) + 1 : 0) + strlen (nm) + 1; | |
1624 | target = (unsigned char *) alloca (tlen); | |
1625 | *target = 0; | |
1626 | ||
1627 | if (newdir) | |
1628 | { | |
1629 | #ifndef VMS | |
1630 | if (nm[0] == 0 || nm[0] == '/') | |
1631 | strcpy (target, newdir); | |
1632 | else | |
1633 | #endif | |
1634 | file_name_as_directory (target, newdir); | |
1635 | } | |
1636 | ||
1637 | strcat (target, nm); | |
1638 | #ifdef VMS | |
1639 | if (index (target, '/')) | |
1640 | strcpy (target, sys_translate_unix (target)); | |
1641 | #endif /* VMS */ | |
1642 | ||
1643 | /* Now canonicalize by removing /. and /foo/.. if they appear */ | |
1644 | ||
1645 | p = target; | |
1646 | o = target; | |
1647 | ||
1648 | while (*p) | |
1649 | { | |
1650 | #ifdef VMS | |
1651 | if (*p != ']' && *p != '>' && *p != '-') | |
1652 | { | |
1653 | if (*p == '\\') | |
1654 | p++; | |
1655 | *o++ = *p++; | |
1656 | } | |
1657 | else if ((p[0] == ']' || p[0] == '>') && p[0] == p[1] + 2) | |
1658 | /* brackets are offset from each other by 2 */ | |
1659 | { | |
1660 | p += 2; | |
1661 | if (*p != '.' && *p != '-' && o[-1] != '.') | |
1662 | /* convert [foo][bar] to [bar] */ | |
1663 | while (o[-1] != '[' && o[-1] != '<') | |
1664 | o--; | |
1665 | else if (*p == '-' && *o != '.') | |
1666 | *--p = '.'; | |
1667 | } | |
1668 | else if (p[0] == '-' && o[-1] == '.' && | |
1669 | (p[1] == '.' || p[1] == ']' || p[1] == '>')) | |
1670 | /* flush .foo.- ; leave - if stopped by '[' or '<' */ | |
1671 | { | |
1672 | do | |
1673 | o--; | |
1674 | while (o[-1] != '.' && o[-1] != '[' && o[-1] != '<'); | |
5e570b75 | 1675 | if (p[1] == '.') /* foo.-.bar ==> bar. */ |
570d7624 JB |
1676 | p += 2; |
1677 | else if (o[-1] == '.') /* '.foo.-]' ==> ']' */ | |
1678 | p++, o--; | |
1679 | /* else [foo.-] ==> [-] */ | |
1680 | } | |
1681 | else | |
1682 | { | |
1683 | #ifndef VMS4_4 | |
1684 | if (*p == '-' && | |
1685 | o[-1] != '[' && o[-1] != '<' && o[-1] != '.' && | |
1686 | p[1] != ']' && p[1] != '>' && p[1] != '.') | |
1687 | *p = '_'; | |
1688 | #endif /* VMS4_4 */ | |
1689 | *o++ = *p++; | |
1690 | } | |
1691 | #else /* not VMS */ | |
1692 | if (*p != '/') | |
5e570b75 | 1693 | { |
570d7624 JB |
1694 | *o++ = *p++; |
1695 | } | |
1696 | else if (!strncmp (p, "//", 2) | |
1697 | #ifdef APOLLO | |
1698 | /* // at start of filename is meaningful in Apollo system */ | |
1699 | && o != target | |
1700 | #endif /* APOLLO */ | |
1701 | ) | |
1702 | { | |
1703 | o = target; | |
1704 | p++; | |
1705 | } | |
1706 | else if (p[0] == '/' && p[1] == '.' && | |
1707 | (p[2] == '/' || p[2] == 0)) | |
1708 | p += 2; | |
1709 | else if (!strncmp (p, "/..", 3) | |
1710 | /* `/../' is the "superroot" on certain file systems. */ | |
1711 | && o != target | |
1712 | && (p[3] == '/' || p[3] == 0)) | |
1713 | { | |
1714 | while (o != target && *--o != '/') | |
1715 | ; | |
1716 | #ifdef APOLLO | |
1717 | if (o == target + 1 && o[-1] == '/' && o[0] == '/') | |
1718 | ++o; | |
1719 | else | |
1720 | #endif /* APOLLO */ | |
1721 | if (o == target && *o == '/') | |
1722 | ++o; | |
1723 | p += 3; | |
1724 | } | |
1725 | else | |
5e570b75 | 1726 | { |
570d7624 JB |
1727 | *o++ = *p++; |
1728 | } | |
1729 | #endif /* not VMS */ | |
1730 | } | |
1731 | ||
1732 | return make_string (target, o - target); | |
1733 | } | |
1734 | #endif | |
1735 | \f | |
1736 | DEFUN ("substitute-in-file-name", Fsubstitute_in_file_name, | |
1737 | Ssubstitute_in_file_name, 1, 1, 0, | |
1738 | "Substitute environment variables referred to in FILENAME.\n\ | |
1739 | `$FOO' where FOO is an environment variable name means to substitute\n\ | |
1740 | the value of that variable. The variable name should be terminated\n\ | |
1741 | with a character not a letter, digit or underscore; otherwise, enclose\n\ | |
1742 | the entire variable name in braces.\n\ | |
1743 | If `/~' appears, all of FILENAME through that `/' is discarded.\n\n\ | |
1744 | On VMS, `$' substitution is not done; this function does little and only\n\ | |
1745 | duplicates what `expand-file-name' does.") | |
3b7f6e60 EN |
1746 | (filename) |
1747 | Lisp_Object filename; | |
570d7624 JB |
1748 | { |
1749 | unsigned char *nm; | |
1750 | ||
1751 | register unsigned char *s, *p, *o, *x, *endp; | |
1752 | unsigned char *target; | |
1753 | int total = 0; | |
1754 | int substituted = 0; | |
1755 | unsigned char *xnm; | |
8ce069f5 | 1756 | Lisp_Object handler; |
570d7624 | 1757 | |
3b7f6e60 | 1758 | CHECK_STRING (filename, 0); |
570d7624 | 1759 | |
8ce069f5 RS |
1760 | /* If the file name has special constructs in it, |
1761 | call the corresponding file handler. */ | |
3b7f6e60 | 1762 | handler = Ffind_file_name_handler (filename, Qsubstitute_in_file_name); |
8ce069f5 | 1763 | if (!NILP (handler)) |
3b7f6e60 | 1764 | return call2 (handler, Qsubstitute_in_file_name, filename); |
8ce069f5 | 1765 | |
3b7f6e60 | 1766 | nm = XSTRING (filename)->data; |
199607e4 RS |
1767 | #ifdef DOS_NT |
1768 | nm = strcpy (alloca (strlen (nm) + 1), nm); | |
1769 | CORRECT_DIR_SEPS (nm); | |
1770 | substituted = (strcmp (nm, XSTRING (filename)->data) != 0); | |
a5a1cc06 | 1771 | #endif |
3b7f6e60 | 1772 | endp = nm + XSTRING (filename)->size; |
570d7624 JB |
1773 | |
1774 | /* If /~ or // appears, discard everything through first slash. */ | |
1775 | ||
1776 | for (p = nm; p != endp; p++) | |
1777 | { | |
199607e4 RS |
1778 | if ((p[0] == '~' |
1779 | #if defined (APOLLO) || defined (WINDOWSNT) | |
1780 | /* // at start of file name is meaningful in Apollo and | |
1781 | WindowsNT systems */ | |
1782 | || (IS_DIRECTORY_SEP (p[0]) && p - 1 != nm) | |
1783 | #else /* not (APOLLO || WINDOWSNT) */ | |
1784 | || IS_DIRECTORY_SEP (p[0]) | |
1785 | #endif /* not (APOLLO || WINDOWSNT) */ | |
570d7624 | 1786 | ) |
5e570b75 RS |
1787 | && p != nm |
1788 | && (0 | |
570d7624 | 1789 | #ifdef VMS |
5e570b75 | 1790 | || p[-1] == ':' || p[-1] == ']' || p[-1] == '>' |
570d7624 | 1791 | #endif /* VMS */ |
5e570b75 | 1792 | || IS_DIRECTORY_SEP (p[-1]))) |
570d7624 JB |
1793 | { |
1794 | nm = p; | |
1795 | substituted = 1; | |
1796 | } | |
5e570b75 | 1797 | #ifdef DOS_NT |
199607e4 RS |
1798 | /* see comment in expand-file-name about drive specifiers */ |
1799 | else if (IS_DRIVE (p[0]) && p[1] == ':' | |
1800 | && p > nm && IS_DIRECTORY_SEP (p[-1])) | |
4c3c22f3 RS |
1801 | { |
1802 | nm = p; | |
1803 | substituted = 1; | |
1804 | } | |
5e570b75 | 1805 | #endif /* DOS_NT */ |
570d7624 JB |
1806 | } |
1807 | ||
1808 | #ifdef VMS | |
1809 | return build_string (nm); | |
1810 | #else | |
1811 | ||
1812 | /* See if any variables are substituted into the string | |
1813 | and find the total length of their values in `total' */ | |
1814 | ||
1815 | for (p = nm; p != endp;) | |
1816 | if (*p != '$') | |
1817 | p++; | |
1818 | else | |
1819 | { | |
1820 | p++; | |
1821 | if (p == endp) | |
1822 | goto badsubst; | |
1823 | else if (*p == '$') | |
1824 | { | |
1825 | /* "$$" means a single "$" */ | |
1826 | p++; | |
1827 | total -= 1; | |
1828 | substituted = 1; | |
1829 | continue; | |
1830 | } | |
1831 | else if (*p == '{') | |
1832 | { | |
1833 | o = ++p; | |
1834 | while (p != endp && *p != '}') p++; | |
1835 | if (*p != '}') goto missingclose; | |
1836 | s = p; | |
1837 | } | |
1838 | else | |
1839 | { | |
1840 | o = p; | |
1841 | while (p != endp && (isalnum (*p) || *p == '_')) p++; | |
1842 | s = p; | |
1843 | } | |
1844 | ||
1845 | /* Copy out the variable name */ | |
1846 | target = (unsigned char *) alloca (s - o + 1); | |
1847 | strncpy (target, o, s - o); | |
1848 | target[s - o] = 0; | |
5e570b75 | 1849 | #ifdef DOS_NT |
4c3c22f3 | 1850 | strupr (target); /* $home == $HOME etc. */ |
5e570b75 | 1851 | #endif /* DOS_NT */ |
570d7624 JB |
1852 | |
1853 | /* Get variable value */ | |
1854 | o = (unsigned char *) egetenv (target); | |
570d7624 JB |
1855 | if (!o) goto badvar; |
1856 | total += strlen (o); | |
1857 | substituted = 1; | |
1858 | } | |
1859 | ||
1860 | if (!substituted) | |
3b7f6e60 | 1861 | return filename; |
570d7624 JB |
1862 | |
1863 | /* If substitution required, recopy the string and do it */ | |
1864 | /* Make space in stack frame for the new copy */ | |
3b7f6e60 | 1865 | xnm = (unsigned char *) alloca (XSTRING (filename)->size + total + 1); |
570d7624 JB |
1866 | x = xnm; |
1867 | ||
1868 | /* Copy the rest of the name through, replacing $ constructs with values */ | |
1869 | for (p = nm; *p;) | |
1870 | if (*p != '$') | |
1871 | *x++ = *p++; | |
1872 | else | |
1873 | { | |
1874 | p++; | |
1875 | if (p == endp) | |
1876 | goto badsubst; | |
1877 | else if (*p == '$') | |
1878 | { | |
1879 | *x++ = *p++; | |
1880 | continue; | |
1881 | } | |
1882 | else if (*p == '{') | |
1883 | { | |
1884 | o = ++p; | |
1885 | while (p != endp && *p != '}') p++; | |
1886 | if (*p != '}') goto missingclose; | |
1887 | s = p++; | |
1888 | } | |
1889 | else | |
1890 | { | |
1891 | o = p; | |
1892 | while (p != endp && (isalnum (*p) || *p == '_')) p++; | |
1893 | s = p; | |
1894 | } | |
1895 | ||
1896 | /* Copy out the variable name */ | |
1897 | target = (unsigned char *) alloca (s - o + 1); | |
1898 | strncpy (target, o, s - o); | |
1899 | target[s - o] = 0; | |
5e570b75 | 1900 | #ifdef DOS_NT |
4c3c22f3 | 1901 | strupr (target); /* $home == $HOME etc. */ |
5e570b75 | 1902 | #endif /* DOS_NT */ |
570d7624 JB |
1903 | |
1904 | /* Get variable value */ | |
1905 | o = (unsigned char *) egetenv (target); | |
570d7624 JB |
1906 | if (!o) |
1907 | goto badvar; | |
1908 | ||
1909 | strcpy (x, o); | |
1910 | x += strlen (o); | |
1911 | } | |
1912 | ||
1913 | *x = 0; | |
1914 | ||
1915 | /* If /~ or // appears, discard everything through first slash. */ | |
1916 | ||
1917 | for (p = xnm; p != x; p++) | |
5e570b75 | 1918 | if ((p[0] == '~' |
199607e4 | 1919 | #if defined (APOLLO) || defined (WINDOWSNT) |
5e570b75 | 1920 | || (IS_DIRECTORY_SEP (p[0]) && p - 1 != xnm) |
199607e4 RS |
1921 | #else /* not (APOLLO || WINDOWSNT) */ |
1922 | || IS_DIRECTORY_SEP (p[0]) | |
1923 | #endif /* not (APOLLO || WINDOWSNT) */ | |
570d7624 | 1924 | ) |
ac5b7072 | 1925 | && p != xnm && IS_DIRECTORY_SEP (p[-1])) |
570d7624 | 1926 | xnm = p; |
5e570b75 | 1927 | #ifdef DOS_NT |
199607e4 RS |
1928 | else if (IS_DRIVE (p[0]) && p[1] == ':' |
1929 | && p > nm && IS_DIRECTORY_SEP (p[-1])) | |
1930 | xnm = p; | |
4c3c22f3 | 1931 | #endif |
570d7624 JB |
1932 | |
1933 | return make_string (xnm, x - xnm); | |
1934 | ||
1935 | badsubst: | |
1936 | error ("Bad format environment-variable substitution"); | |
1937 | missingclose: | |
1938 | error ("Missing \"}\" in environment-variable substitution"); | |
1939 | badvar: | |
1940 | error ("Substituting nonexistent environment variable \"%s\"", target); | |
1941 | ||
1942 | /* NOTREACHED */ | |
1943 | #endif /* not VMS */ | |
1944 | } | |
1945 | \f | |
067ffa38 | 1946 | /* A slightly faster and more convenient way to get |
298b760e | 1947 | (directory-file-name (expand-file-name FOO)). */ |
067ffa38 | 1948 | |
570d7624 JB |
1949 | Lisp_Object |
1950 | expand_and_dir_to_file (filename, defdir) | |
1951 | Lisp_Object filename, defdir; | |
1952 | { | |
199607e4 | 1953 | register Lisp_Object absname; |
570d7624 | 1954 | |
199607e4 | 1955 | absname = Fexpand_file_name (filename, defdir); |
570d7624 JB |
1956 | #ifdef VMS |
1957 | { | |
199607e4 | 1958 | register int c = XSTRING (absname)->data[XSTRING (absname)->size - 1]; |
570d7624 | 1959 | if (c == ':' || c == ']' || c == '>') |
199607e4 | 1960 | absname = Fdirectory_file_name (absname); |
570d7624 JB |
1961 | } |
1962 | #else | |
199607e4 | 1963 | /* Remove final slash, if any (unless this is the root dir). |
570d7624 | 1964 | stat behaves differently depending! */ |
199607e4 RS |
1965 | if (XSTRING (absname)->size > 1 |
1966 | && IS_DIRECTORY_SEP (XSTRING (absname)->data[XSTRING (absname)->size - 1]) | |
1967 | && !IS_DEVICE_SEP (XSTRING (absname)->data[XSTRING (absname)->size-2])) | |
ddc61f46 | 1968 | /* We cannot take shortcuts; they might be wrong for magic file names. */ |
199607e4 | 1969 | absname = Fdirectory_file_name (absname); |
570d7624 | 1970 | #endif |
199607e4 | 1971 | return absname; |
570d7624 JB |
1972 | } |
1973 | \f | |
3ed15d97 RS |
1974 | /* Signal an error if the file ABSNAME already exists. |
1975 | If INTERACTIVE is nonzero, ask the user whether to proceed, | |
1976 | and bypass the error if the user says to go ahead. | |
1977 | QUERYSTRING is a name for the action that is being considered | |
1978 | to alter the file. | |
1979 | *STATPTR is used to store the stat information if the file exists. | |
1980 | If the file does not exist, STATPTR->st_mode is set to 0. */ | |
1981 | ||
c4df73f9 | 1982 | void |
3ed15d97 | 1983 | barf_or_query_if_file_exists (absname, querystring, interactive, statptr) |
570d7624 JB |
1984 | Lisp_Object absname; |
1985 | unsigned char *querystring; | |
1986 | int interactive; | |
3ed15d97 | 1987 | struct stat *statptr; |
570d7624 JB |
1988 | { |
1989 | register Lisp_Object tem; | |
4018b5ef | 1990 | struct stat statbuf; |
570d7624 JB |
1991 | struct gcpro gcpro1; |
1992 | ||
4018b5ef RS |
1993 | /* stat is a good way to tell whether the file exists, |
1994 | regardless of what access permissions it has. */ | |
1995 | if (stat (XSTRING (absname)->data, &statbuf) >= 0) | |
570d7624 JB |
1996 | { |
1997 | if (! interactive) | |
1998 | Fsignal (Qfile_already_exists, | |
1999 | Fcons (build_string ("File already exists"), | |
2000 | Fcons (absname, Qnil))); | |
2001 | GCPRO1 (absname); | |
2002 | tem = do_yes_or_no_p (format1 ("File %s already exists; %s anyway? ", | |
2003 | XSTRING (absname)->data, querystring)); | |
2004 | UNGCPRO; | |
265a9e55 | 2005 | if (NILP (tem)) |
570d7624 JB |
2006 | Fsignal (Qfile_already_exists, |
2007 | Fcons (build_string ("File already exists"), | |
2008 | Fcons (absname, Qnil))); | |
3ed15d97 RS |
2009 | if (statptr) |
2010 | *statptr = statbuf; | |
2011 | } | |
2012 | else | |
2013 | { | |
2014 | if (statptr) | |
2015 | statptr->st_mode = 0; | |
570d7624 JB |
2016 | } |
2017 | return; | |
2018 | } | |
2019 | ||
2020 | DEFUN ("copy-file", Fcopy_file, Scopy_file, 2, 4, | |
349a7710 | 2021 | "fCopy file: \nFCopy %s to file: \np\nP", |
570d7624 JB |
2022 | "Copy FILE to NEWNAME. Both args must be strings.\n\ |
2023 | Signals a `file-already-exists' error if file NEWNAME already exists,\n\ | |
2024 | unless a third argument OK-IF-ALREADY-EXISTS is supplied and non-nil.\n\ | |
2025 | A number as third arg means request confirmation if NEWNAME already exists.\n\ | |
2026 | This is what happens in interactive use with M-x.\n\ | |
349a7710 JB |
2027 | Fourth arg KEEP-TIME non-nil means give the new file the same\n\ |
2028 | last-modified time as the old one. (This works on only some systems.)\n\ | |
2029 | A prefix arg makes KEEP-TIME non-nil.") | |
3b7f6e60 EN |
2030 | (file, newname, ok_if_already_exists, keep_date) |
2031 | Lisp_Object file, newname, ok_if_already_exists, keep_date; | |
570d7624 JB |
2032 | { |
2033 | int ifd, ofd, n; | |
2034 | char buf[16 * 1024]; | |
3ed15d97 | 2035 | struct stat st, out_st; |
32f4334d | 2036 | Lisp_Object handler; |
570d7624 | 2037 | struct gcpro gcpro1, gcpro2; |
b5148e85 | 2038 | int count = specpdl_ptr - specpdl; |
f73b0ada | 2039 | int input_file_statable_p; |
570d7624 | 2040 | |
3b7f6e60 EN |
2041 | GCPRO2 (file, newname); |
2042 | CHECK_STRING (file, 0); | |
570d7624 | 2043 | CHECK_STRING (newname, 1); |
3b7f6e60 | 2044 | file = Fexpand_file_name (file, Qnil); |
570d7624 | 2045 | newname = Fexpand_file_name (newname, Qnil); |
32f4334d | 2046 | |
0bf2eed2 | 2047 | /* If the input file name has special constructs in it, |
32f4334d | 2048 | call the corresponding file handler. */ |
3b7f6e60 | 2049 | handler = Ffind_file_name_handler (file, Qcopy_file); |
0bf2eed2 | 2050 | /* Likewise for output file name. */ |
51cf6d37 | 2051 | if (NILP (handler)) |
49307295 | 2052 | handler = Ffind_file_name_handler (newname, Qcopy_file); |
32f4334d | 2053 | if (!NILP (handler)) |
3b7f6e60 | 2054 | RETURN_UNGCPRO (call5 (handler, Qcopy_file, file, newname, |
36712b0a | 2055 | ok_if_already_exists, keep_date)); |
32f4334d | 2056 | |
265a9e55 | 2057 | if (NILP (ok_if_already_exists) |
93c30b5f | 2058 | || INTEGERP (ok_if_already_exists)) |
570d7624 | 2059 | barf_or_query_if_file_exists (newname, "copy to it", |
3ed15d97 RS |
2060 | INTEGERP (ok_if_already_exists), &out_st); |
2061 | else if (stat (XSTRING (newname)->data, &out_st) < 0) | |
2062 | out_st.st_mode = 0; | |
570d7624 | 2063 | |
3b7f6e60 | 2064 | ifd = open (XSTRING (file)->data, O_RDONLY); |
570d7624 | 2065 | if (ifd < 0) |
3b7f6e60 | 2066 | report_file_error ("Opening input file", Fcons (file, Qnil)); |
570d7624 | 2067 | |
b5148e85 RS |
2068 | record_unwind_protect (close_file_unwind, make_number (ifd)); |
2069 | ||
f73b0ada BF |
2070 | /* We can only copy regular files and symbolic links. Other files are not |
2071 | copyable by us. */ | |
2072 | input_file_statable_p = (fstat (ifd, &st) >= 0); | |
2073 | ||
34ead71a | 2074 | #if !defined (MSDOS) || __DJGPP__ > 1 |
3ed15d97 RS |
2075 | if (out_st.st_mode != 0 |
2076 | && st.st_dev == out_st.st_dev && st.st_ino == out_st.st_ino) | |
2077 | { | |
2078 | errno = 0; | |
2079 | report_file_error ("Input and output files are the same", | |
3b7f6e60 | 2080 | Fcons (file, Fcons (newname, Qnil))); |
3ed15d97 RS |
2081 | } |
2082 | #endif | |
2083 | ||
f73b0ada BF |
2084 | #if defined (S_ISREG) && defined (S_ISLNK) |
2085 | if (input_file_statable_p) | |
2086 | { | |
2087 | if (!(S_ISREG (st.st_mode)) && !(S_ISLNK (st.st_mode))) | |
2088 | { | |
2089 | #if defined (EISDIR) | |
2090 | /* Get a better looking error message. */ | |
2091 | errno = EISDIR; | |
2092 | #endif /* EISDIR */ | |
3b7f6e60 | 2093 | report_file_error ("Non-regular file", Fcons (file, Qnil)); |
f73b0ada BF |
2094 | } |
2095 | } | |
2096 | #endif /* S_ISREG && S_ISLNK */ | |
2097 | ||
570d7624 JB |
2098 | #ifdef VMS |
2099 | /* Create the copy file with the same record format as the input file */ | |
2100 | ofd = sys_creat (XSTRING (newname)->data, 0666, ifd); | |
2101 | #else | |
4c3c22f3 RS |
2102 | #ifdef MSDOS |
2103 | /* System's default file type was set to binary by _fmode in emacs.c. */ | |
2104 | ofd = creat (XSTRING (newname)->data, S_IREAD | S_IWRITE); | |
2105 | #else /* not MSDOS */ | |
570d7624 | 2106 | ofd = creat (XSTRING (newname)->data, 0666); |
4c3c22f3 | 2107 | #endif /* not MSDOS */ |
570d7624 JB |
2108 | #endif /* VMS */ |
2109 | if (ofd < 0) | |
3ed15d97 | 2110 | report_file_error ("Opening output file", Fcons (newname, Qnil)); |
b5148e85 RS |
2111 | |
2112 | record_unwind_protect (close_file_unwind, make_number (ofd)); | |
570d7624 | 2113 | |
b5148e85 RS |
2114 | immediate_quit = 1; |
2115 | QUIT; | |
570d7624 JB |
2116 | while ((n = read (ifd, buf, sizeof buf)) > 0) |
2117 | if (write (ofd, buf, n) != n) | |
3ed15d97 | 2118 | report_file_error ("I/O error", Fcons (newname, Qnil)); |
b5148e85 | 2119 | immediate_quit = 0; |
570d7624 | 2120 | |
5acac34e RS |
2121 | /* Closing the output clobbers the file times on some systems. */ |
2122 | if (close (ofd) < 0) | |
2123 | report_file_error ("I/O error", Fcons (newname, Qnil)); | |
2124 | ||
f73b0ada | 2125 | if (input_file_statable_p) |
570d7624 | 2126 | { |
265a9e55 | 2127 | if (!NILP (keep_date)) |
570d7624 | 2128 | { |
de5bf5d3 JB |
2129 | EMACS_TIME atime, mtime; |
2130 | EMACS_SET_SECS_USECS (atime, st.st_atime, 0); | |
2131 | EMACS_SET_SECS_USECS (mtime, st.st_mtime, 0); | |
d6303611 | 2132 | if (set_file_times (XSTRING (newname)->data, atime, mtime)) |
c0b7b21c | 2133 | Fsignal (Qfile_date_error, |
d1b9ed63 | 2134 | Fcons (build_string ("Cannot set file date"), |
3dbcf3f6 | 2135 | Fcons (newname, Qnil))); |
570d7624 | 2136 | } |
2dc3be7e RS |
2137 | #ifndef MSDOS |
2138 | chmod (XSTRING (newname)->data, st.st_mode & 07777); | |
2139 | #else /* MSDOS */ | |
2140 | #if defined (__DJGPP__) && __DJGPP__ > 1 | |
2141 | /* In DJGPP v2.0 and later, fstat usually returns true file mode bits, | |
2142 | and if it can't, it tells so. Otherwise, under MSDOS we usually | |
2143 | get only the READ bit, which will make the copied file read-only, | |
2144 | so it's better not to chmod at all. */ | |
2145 | if ((_djstat_flags & _STFAIL_WRITEBIT) == 0) | |
de5bf5d3 | 2146 | chmod (XSTRING (newname)->data, st.st_mode & 07777); |
2dc3be7e RS |
2147 | #endif /* DJGPP version 2 or newer */ |
2148 | #endif /* MSDOS */ | |
570d7624 JB |
2149 | } |
2150 | ||
5acac34e RS |
2151 | close (ifd); |
2152 | ||
b5148e85 RS |
2153 | /* Discard the unwind protects. */ |
2154 | specpdl_ptr = specpdl + count; | |
2155 | ||
570d7624 JB |
2156 | UNGCPRO; |
2157 | return Qnil; | |
2158 | } | |
385b6cc7 | 2159 | \f |
9bbe01fb | 2160 | DEFUN ("make-directory-internal", Fmake_directory_internal, |
353cfc19 | 2161 | Smake_directory_internal, 1, 1, 0, |
3b7f6e60 EN |
2162 | "Create a new directory named DIRECTORY.") |
2163 | (directory) | |
2164 | Lisp_Object directory; | |
570d7624 JB |
2165 | { |
2166 | unsigned char *dir; | |
32f4334d | 2167 | Lisp_Object handler; |
570d7624 | 2168 | |
3b7f6e60 EN |
2169 | CHECK_STRING (directory, 0); |
2170 | directory = Fexpand_file_name (directory, Qnil); | |
32f4334d | 2171 | |
3b7f6e60 | 2172 | handler = Ffind_file_name_handler (directory, Qmake_directory_internal); |
32f4334d | 2173 | if (!NILP (handler)) |
3b7f6e60 | 2174 | return call2 (handler, Qmake_directory_internal, directory); |
9bbe01fb | 2175 | |
3b7f6e60 | 2176 | dir = XSTRING (directory)->data; |
570d7624 | 2177 | |
5e570b75 RS |
2178 | #ifdef WINDOWSNT |
2179 | if (mkdir (dir) != 0) | |
2180 | #else | |
570d7624 | 2181 | if (mkdir (dir, 0777) != 0) |
5e570b75 | 2182 | #endif |
3b7f6e60 | 2183 | report_file_error ("Creating directory", Flist (1, &directory)); |
570d7624 | 2184 | |
32f4334d | 2185 | return Qnil; |
570d7624 JB |
2186 | } |
2187 | ||
aa734e17 | 2188 | DEFUN ("delete-directory", Fdelete_directory, Sdelete_directory, 1, 1, "FDelete directory: ", |
3b7f6e60 EN |
2189 | "Delete the directory named DIRECTORY.") |
2190 | (directory) | |
2191 | Lisp_Object directory; | |
570d7624 JB |
2192 | { |
2193 | unsigned char *dir; | |
32f4334d | 2194 | Lisp_Object handler; |
570d7624 | 2195 | |
3b7f6e60 EN |
2196 | CHECK_STRING (directory, 0); |
2197 | directory = Fdirectory_file_name (Fexpand_file_name (directory, Qnil)); | |
2198 | dir = XSTRING (directory)->data; | |
570d7624 | 2199 | |
3b7f6e60 | 2200 | handler = Ffind_file_name_handler (directory, Qdelete_directory); |
32f4334d | 2201 | if (!NILP (handler)) |
3b7f6e60 | 2202 | return call2 (handler, Qdelete_directory, directory); |
32f4334d | 2203 | |
570d7624 | 2204 | if (rmdir (dir) != 0) |
3b7f6e60 | 2205 | report_file_error ("Removing directory", Flist (1, &directory)); |
570d7624 JB |
2206 | |
2207 | return Qnil; | |
2208 | } | |
2209 | ||
2210 | DEFUN ("delete-file", Fdelete_file, Sdelete_file, 1, 1, "fDelete file: ", | |
3b7f6e60 | 2211 | "Delete file named FILENAME.\n\ |
570d7624 JB |
2212 | If file has multiple names, it continues to exist with the other names.") |
2213 | (filename) | |
2214 | Lisp_Object filename; | |
2215 | { | |
32f4334d | 2216 | Lisp_Object handler; |
570d7624 JB |
2217 | CHECK_STRING (filename, 0); |
2218 | filename = Fexpand_file_name (filename, Qnil); | |
32f4334d | 2219 | |
49307295 | 2220 | handler = Ffind_file_name_handler (filename, Qdelete_file); |
32f4334d | 2221 | if (!NILP (handler)) |
8a9b0da9 | 2222 | return call2 (handler, Qdelete_file, filename); |
32f4334d | 2223 | |
570d7624 JB |
2224 | if (0 > unlink (XSTRING (filename)->data)) |
2225 | report_file_error ("Removing old name", Flist (1, &filename)); | |
8a9b0da9 | 2226 | return Qnil; |
570d7624 JB |
2227 | } |
2228 | ||
385b6cc7 RS |
2229 | static Lisp_Object |
2230 | internal_delete_file_1 (ignore) | |
2231 | Lisp_Object ignore; | |
2232 | { | |
2233 | return Qt; | |
2234 | } | |
2235 | ||
2236 | /* Delete file FILENAME, returning 1 if successful and 0 if failed. */ | |
2237 | ||
2238 | int | |
2239 | internal_delete_file (filename) | |
2240 | Lisp_Object filename; | |
2241 | { | |
2242 | return NILP (internal_condition_case_1 (Fdelete_file, filename, | |
2243 | Qt, internal_delete_file_1)); | |
2244 | } | |
2245 | \f | |
570d7624 JB |
2246 | DEFUN ("rename-file", Frename_file, Srename_file, 2, 3, |
2247 | "fRename file: \nFRename %s to file: \np", | |
2248 | "Rename FILE as NEWNAME. Both args strings.\n\ | |
2249 | If file has names other than FILE, it continues to have those names.\n\ | |
2250 | Signals a `file-already-exists' error if a file NEWNAME already exists\n\ | |
2251 | unless optional third argument OK-IF-ALREADY-EXISTS is non-nil.\n\ | |
2252 | A number as third arg means request confirmation if NEWNAME already exists.\n\ | |
2253 | This is what happens in interactive use with M-x.") | |
3b7f6e60 EN |
2254 | (file, newname, ok_if_already_exists) |
2255 | Lisp_Object file, newname, ok_if_already_exists; | |
570d7624 JB |
2256 | { |
2257 | #ifdef NO_ARG_ARRAY | |
2258 | Lisp_Object args[2]; | |
2259 | #endif | |
32f4334d | 2260 | Lisp_Object handler; |
570d7624 JB |
2261 | struct gcpro gcpro1, gcpro2; |
2262 | ||
3b7f6e60 EN |
2263 | GCPRO2 (file, newname); |
2264 | CHECK_STRING (file, 0); | |
570d7624 | 2265 | CHECK_STRING (newname, 1); |
3b7f6e60 | 2266 | file = Fexpand_file_name (file, Qnil); |
570d7624 | 2267 | newname = Fexpand_file_name (newname, Qnil); |
32f4334d RS |
2268 | |
2269 | /* If the file name has special constructs in it, | |
2270 | call the corresponding file handler. */ | |
3b7f6e60 | 2271 | handler = Ffind_file_name_handler (file, Qrename_file); |
51cf6d37 | 2272 | if (NILP (handler)) |
49307295 | 2273 | handler = Ffind_file_name_handler (newname, Qrename_file); |
32f4334d | 2274 | if (!NILP (handler)) |
36712b0a | 2275 | RETURN_UNGCPRO (call4 (handler, Qrename_file, |
3b7f6e60 | 2276 | file, newname, ok_if_already_exists)); |
32f4334d | 2277 | |
265a9e55 | 2278 | if (NILP (ok_if_already_exists) |
93c30b5f | 2279 | || INTEGERP (ok_if_already_exists)) |
570d7624 | 2280 | barf_or_query_if_file_exists (newname, "rename to it", |
3ed15d97 | 2281 | INTEGERP (ok_if_already_exists), 0); |
570d7624 | 2282 | #ifndef BSD4_1 |
3b7f6e60 | 2283 | if (0 > rename (XSTRING (file)->data, XSTRING (newname)->data)) |
570d7624 | 2284 | #else |
3b7f6e60 EN |
2285 | if (0 > link (XSTRING (file)->data, XSTRING (newname)->data) |
2286 | || 0 > unlink (XSTRING (file)->data)) | |
570d7624 JB |
2287 | #endif |
2288 | { | |
2289 | if (errno == EXDEV) | |
2290 | { | |
3b7f6e60 | 2291 | Fcopy_file (file, newname, |
d093c3ac RM |
2292 | /* We have already prompted if it was an integer, |
2293 | so don't have copy-file prompt again. */ | |
2294 | NILP (ok_if_already_exists) ? Qnil : Qt, Qt); | |
3b7f6e60 | 2295 | Fdelete_file (file); |
570d7624 JB |
2296 | } |
2297 | else | |
2298 | #ifdef NO_ARG_ARRAY | |
2299 | { | |
3b7f6e60 | 2300 | args[0] = file; |
570d7624 JB |
2301 | args[1] = newname; |
2302 | report_file_error ("Renaming", Flist (2, args)); | |
2303 | } | |
2304 | #else | |
3b7f6e60 | 2305 | report_file_error ("Renaming", Flist (2, &file)); |
570d7624 JB |
2306 | #endif |
2307 | } | |
2308 | UNGCPRO; | |
2309 | return Qnil; | |
2310 | } | |
2311 | ||
2312 | DEFUN ("add-name-to-file", Fadd_name_to_file, Sadd_name_to_file, 2, 3, | |
2313 | "fAdd name to file: \nFName to add to %s: \np", | |
2314 | "Give FILE additional name NEWNAME. Both args strings.\n\ | |
2315 | Signals a `file-already-exists' error if a file NEWNAME already exists\n\ | |
2316 | unless optional third argument OK-IF-ALREADY-EXISTS is non-nil.\n\ | |
2317 | A number as third arg means request confirmation if NEWNAME already exists.\n\ | |
2318 | This is what happens in interactive use with M-x.") | |
3b7f6e60 EN |
2319 | (file, newname, ok_if_already_exists) |
2320 | Lisp_Object file, newname, ok_if_already_exists; | |
570d7624 JB |
2321 | { |
2322 | #ifdef NO_ARG_ARRAY | |
2323 | Lisp_Object args[2]; | |
2324 | #endif | |
32f4334d | 2325 | Lisp_Object handler; |
570d7624 JB |
2326 | struct gcpro gcpro1, gcpro2; |
2327 | ||
3b7f6e60 EN |
2328 | GCPRO2 (file, newname); |
2329 | CHECK_STRING (file, 0); | |
570d7624 | 2330 | CHECK_STRING (newname, 1); |
3b7f6e60 | 2331 | file = Fexpand_file_name (file, Qnil); |
570d7624 | 2332 | newname = Fexpand_file_name (newname, Qnil); |
32f4334d RS |
2333 | |
2334 | /* If the file name has special constructs in it, | |
2335 | call the corresponding file handler. */ | |
3b7f6e60 | 2336 | handler = Ffind_file_name_handler (file, Qadd_name_to_file); |
32f4334d | 2337 | if (!NILP (handler)) |
3b7f6e60 | 2338 | RETURN_UNGCPRO (call4 (handler, Qadd_name_to_file, file, |
36712b0a | 2339 | newname, ok_if_already_exists)); |
32f4334d | 2340 | |
adc6741c RS |
2341 | /* If the new name has special constructs in it, |
2342 | call the corresponding file handler. */ | |
2343 | handler = Ffind_file_name_handler (newname, Qadd_name_to_file); | |
2344 | if (!NILP (handler)) | |
3b7f6e60 | 2345 | RETURN_UNGCPRO (call4 (handler, Qadd_name_to_file, file, |
adc6741c RS |
2346 | newname, ok_if_already_exists)); |
2347 | ||
265a9e55 | 2348 | if (NILP (ok_if_already_exists) |
93c30b5f | 2349 | || INTEGERP (ok_if_already_exists)) |
570d7624 | 2350 | barf_or_query_if_file_exists (newname, "make it a new name", |
3ed15d97 | 2351 | INTEGERP (ok_if_already_exists), 0); |
5e570b75 RS |
2352 | #ifdef WINDOWSNT |
2353 | /* Windows does not support this operation. */ | |
3b7f6e60 | 2354 | report_file_error ("Adding new name", Flist (2, &file)); |
5e570b75 RS |
2355 | #else /* not WINDOWSNT */ |
2356 | ||
570d7624 | 2357 | unlink (XSTRING (newname)->data); |
3b7f6e60 | 2358 | if (0 > link (XSTRING (file)->data, XSTRING (newname)->data)) |
570d7624 JB |
2359 | { |
2360 | #ifdef NO_ARG_ARRAY | |
3b7f6e60 | 2361 | args[0] = file; |
570d7624 JB |
2362 | args[1] = newname; |
2363 | report_file_error ("Adding new name", Flist (2, args)); | |
2364 | #else | |
3b7f6e60 | 2365 | report_file_error ("Adding new name", Flist (2, &file)); |
570d7624 JB |
2366 | #endif |
2367 | } | |
5e570b75 | 2368 | #endif /* not WINDOWSNT */ |
570d7624 JB |
2369 | |
2370 | UNGCPRO; | |
2371 | return Qnil; | |
2372 | } | |
2373 | ||
2374 | #ifdef S_IFLNK | |
2375 | DEFUN ("make-symbolic-link", Fmake_symbolic_link, Smake_symbolic_link, 2, 3, | |
2376 | "FMake symbolic link to file: \nFMake symbolic link to file %s: \np", | |
2377 | "Make a symbolic link to FILENAME, named LINKNAME. Both args strings.\n\ | |
11183104 | 2378 | Signals a `file-already-exists' error if a file LINKNAME already exists\n\ |
570d7624 | 2379 | unless optional third argument OK-IF-ALREADY-EXISTS is non-nil.\n\ |
11183104 | 2380 | A number as third arg means request confirmation if LINKNAME already exists.\n\ |
570d7624 | 2381 | This happens for interactive use with M-x.") |
e5d77022 JB |
2382 | (filename, linkname, ok_if_already_exists) |
2383 | Lisp_Object filename, linkname, ok_if_already_exists; | |
570d7624 JB |
2384 | { |
2385 | #ifdef NO_ARG_ARRAY | |
2386 | Lisp_Object args[2]; | |
2387 | #endif | |
32f4334d | 2388 | Lisp_Object handler; |
570d7624 JB |
2389 | struct gcpro gcpro1, gcpro2; |
2390 | ||
e5d77022 | 2391 | GCPRO2 (filename, linkname); |
570d7624 | 2392 | CHECK_STRING (filename, 0); |
e5d77022 | 2393 | CHECK_STRING (linkname, 1); |
d9bc1c99 RS |
2394 | /* If the link target has a ~, we must expand it to get |
2395 | a truly valid file name. Otherwise, do not expand; | |
2396 | we want to permit links to relative file names. */ | |
2397 | if (XSTRING (filename)->data[0] == '~') | |
2398 | filename = Fexpand_file_name (filename, Qnil); | |
e5d77022 | 2399 | linkname = Fexpand_file_name (linkname, Qnil); |
32f4334d RS |
2400 | |
2401 | /* If the file name has special constructs in it, | |
2402 | call the corresponding file handler. */ | |
49307295 | 2403 | handler = Ffind_file_name_handler (filename, Qmake_symbolic_link); |
32f4334d | 2404 | if (!NILP (handler)) |
36712b0a KH |
2405 | RETURN_UNGCPRO (call4 (handler, Qmake_symbolic_link, filename, |
2406 | linkname, ok_if_already_exists)); | |
32f4334d | 2407 | |
adc6741c RS |
2408 | /* If the new link name has special constructs in it, |
2409 | call the corresponding file handler. */ | |
2410 | handler = Ffind_file_name_handler (linkname, Qmake_symbolic_link); | |
2411 | if (!NILP (handler)) | |
2412 | RETURN_UNGCPRO (call4 (handler, Qmake_symbolic_link, filename, | |
2413 | linkname, ok_if_already_exists)); | |
2414 | ||
265a9e55 | 2415 | if (NILP (ok_if_already_exists) |
93c30b5f | 2416 | || INTEGERP (ok_if_already_exists)) |
e5d77022 | 2417 | barf_or_query_if_file_exists (linkname, "make it a link", |
3ed15d97 | 2418 | INTEGERP (ok_if_already_exists), 0); |
e5d77022 | 2419 | if (0 > symlink (XSTRING (filename)->data, XSTRING (linkname)->data)) |
570d7624 JB |
2420 | { |
2421 | /* If we didn't complain already, silently delete existing file. */ | |
2422 | if (errno == EEXIST) | |
2423 | { | |
9083124b | 2424 | unlink (XSTRING (linkname)->data); |
e5d77022 | 2425 | if (0 <= symlink (XSTRING (filename)->data, XSTRING (linkname)->data)) |
1a04498e KH |
2426 | { |
2427 | UNGCPRO; | |
2428 | return Qnil; | |
2429 | } | |
570d7624 JB |
2430 | } |
2431 | ||
2432 | #ifdef NO_ARG_ARRAY | |
2433 | args[0] = filename; | |
e5d77022 | 2434 | args[1] = linkname; |
570d7624 JB |
2435 | report_file_error ("Making symbolic link", Flist (2, args)); |
2436 | #else | |
2437 | report_file_error ("Making symbolic link", Flist (2, &filename)); | |
2438 | #endif | |
2439 | } | |
2440 | UNGCPRO; | |
2441 | return Qnil; | |
2442 | } | |
2443 | #endif /* S_IFLNK */ | |
2444 | ||
2445 | #ifdef VMS | |
2446 | ||
2447 | DEFUN ("define-logical-name", Fdefine_logical_name, Sdefine_logical_name, | |
2448 | 2, 2, "sDefine logical name: \nsDefine logical name %s as: ", | |
2449 | "Define the job-wide logical name NAME to have the value STRING.\n\ | |
2450 | If STRING is nil or a null string, the logical name NAME is deleted.") | |
3b7f6e60 EN |
2451 | (name, string) |
2452 | Lisp_Object name; | |
570d7624 JB |
2453 | Lisp_Object string; |
2454 | { | |
3b7f6e60 | 2455 | CHECK_STRING (name, 0); |
265a9e55 | 2456 | if (NILP (string)) |
3b7f6e60 | 2457 | delete_logical_name (XSTRING (name)->data); |
570d7624 JB |
2458 | else |
2459 | { | |
2460 | CHECK_STRING (string, 1); | |
2461 | ||
2462 | if (XSTRING (string)->size == 0) | |
3b7f6e60 | 2463 | delete_logical_name (XSTRING (name)->data); |
570d7624 | 2464 | else |
3b7f6e60 | 2465 | define_logical_name (XSTRING (name)->data, XSTRING (string)->data); |
570d7624 JB |
2466 | } |
2467 | ||
2468 | return string; | |
2469 | } | |
2470 | #endif /* VMS */ | |
2471 | ||
2472 | #ifdef HPUX_NET | |
2473 | ||
2474 | DEFUN ("sysnetunam", Fsysnetunam, Ssysnetunam, 2, 2, 0, | |
2475 | "Open a network connection to PATH using LOGIN as the login string.") | |
2476 | (path, login) | |
2477 | Lisp_Object path, login; | |
2478 | { | |
2479 | int netresult; | |
199607e4 | 2480 | |
570d7624 | 2481 | CHECK_STRING (path, 0); |
199607e4 RS |
2482 | CHECK_STRING (login, 0); |
2483 | ||
570d7624 JB |
2484 | netresult = netunam (XSTRING (path)->data, XSTRING (login)->data); |
2485 | ||
2486 | if (netresult == -1) | |
2487 | return Qnil; | |
2488 | else | |
2489 | return Qt; | |
2490 | } | |
2491 | #endif /* HPUX_NET */ | |
2492 | \f | |
2493 | DEFUN ("file-name-absolute-p", Ffile_name_absolute_p, Sfile_name_absolute_p, | |
2494 | 1, 1, 0, | |
199607e4 | 2495 | "Return t if file FILENAME specifies an absolute file name.\n\ |
570d7624 JB |
2496 | On Unix, this is a name starting with a `/' or a `~'.") |
2497 | (filename) | |
2498 | Lisp_Object filename; | |
2499 | { | |
2500 | unsigned char *ptr; | |
2501 | ||
2502 | CHECK_STRING (filename, 0); | |
2503 | ptr = XSTRING (filename)->data; | |
5e570b75 | 2504 | if (IS_DIRECTORY_SEP (*ptr) || *ptr == '~' |
570d7624 JB |
2505 | #ifdef VMS |
2506 | /* ??? This criterion is probably wrong for '<'. */ | |
2507 | || index (ptr, ':') || index (ptr, '<') | |
2508 | || (*ptr == '[' && (ptr[1] != '-' || (ptr[2] != '.' && ptr[2] != ']')) | |
2509 | && ptr[1] != '.') | |
2510 | #endif /* VMS */ | |
5e570b75 | 2511 | #ifdef DOS_NT |
199607e4 | 2512 | || (IS_DRIVE (*ptr) && ptr[1] == ':' && IS_DIRECTORY_SEP (ptr[2])) |
4c3c22f3 | 2513 | #endif |
570d7624 JB |
2514 | ) |
2515 | return Qt; | |
2516 | else | |
2517 | return Qnil; | |
2518 | } | |
3beeedfe RS |
2519 | \f |
2520 | /* Return nonzero if file FILENAME exists and can be executed. */ | |
2521 | ||
2522 | static int | |
2523 | check_executable (filename) | |
2524 | char *filename; | |
2525 | { | |
3be3c08e RS |
2526 | #ifdef DOS_NT |
2527 | int len = strlen (filename); | |
2528 | char *suffix; | |
2529 | struct stat st; | |
2530 | if (stat (filename, &st) < 0) | |
2531 | return 0; | |
34ead71a | 2532 | #if defined (WINDOWSNT) || (defined (MSDOS) && __DJGPP__ > 1) |
199607e4 RS |
2533 | return ((st.st_mode & S_IEXEC) != 0); |
2534 | #else | |
3be3c08e RS |
2535 | return (S_ISREG (st.st_mode) |
2536 | && len >= 5 | |
2537 | && (stricmp ((suffix = filename + len-4), ".com") == 0 | |
2538 | || stricmp (suffix, ".exe") == 0 | |
2dc3be7e RS |
2539 | || stricmp (suffix, ".bat") == 0) |
2540 | || (st.st_mode & S_IFMT) == S_IFDIR); | |
199607e4 | 2541 | #endif /* not WINDOWSNT */ |
3be3c08e | 2542 | #else /* not DOS_NT */ |
de0be7dd RS |
2543 | #ifdef HAVE_EUIDACCESS |
2544 | return (euidaccess (filename, 1) >= 0); | |
3beeedfe RS |
2545 | #else |
2546 | /* Access isn't quite right because it uses the real uid | |
2547 | and we really want to test with the effective uid. | |
2548 | But Unix doesn't give us a right way to do it. */ | |
2549 | return (access (filename, 1) >= 0); | |
2550 | #endif | |
3be3c08e | 2551 | #endif /* not DOS_NT */ |
3beeedfe RS |
2552 | } |
2553 | ||
2554 | /* Return nonzero if file FILENAME exists and can be written. */ | |
2555 | ||
2556 | static int | |
2557 | check_writable (filename) | |
2558 | char *filename; | |
2559 | { | |
3be3c08e RS |
2560 | #ifdef MSDOS |
2561 | struct stat st; | |
2562 | if (stat (filename, &st) < 0) | |
2563 | return 0; | |
2564 | return (st.st_mode & S_IWRITE || (st.st_mode & S_IFMT) == S_IFDIR); | |
2565 | #else /* not MSDOS */ | |
41f3fb38 KH |
2566 | #ifdef HAVE_EUIDACCESS |
2567 | return (euidaccess (filename, 2) >= 0); | |
3beeedfe RS |
2568 | #else |
2569 | /* Access isn't quite right because it uses the real uid | |
2570 | and we really want to test with the effective uid. | |
2571 | But Unix doesn't give us a right way to do it. | |
2572 | Opening with O_WRONLY could work for an ordinary file, | |
2573 | but would lose for directories. */ | |
2574 | return (access (filename, 2) >= 0); | |
2575 | #endif | |
3be3c08e | 2576 | #endif /* not MSDOS */ |
3beeedfe | 2577 | } |
570d7624 JB |
2578 | |
2579 | DEFUN ("file-exists-p", Ffile_exists_p, Sfile_exists_p, 1, 1, 0, | |
2580 | "Return t if file FILENAME exists. (This does not mean you can read it.)\n\ | |
2581 | See also `file-readable-p' and `file-attributes'.") | |
2582 | (filename) | |
2583 | Lisp_Object filename; | |
2584 | { | |
199607e4 | 2585 | Lisp_Object absname; |
32f4334d | 2586 | Lisp_Object handler; |
4018b5ef | 2587 | struct stat statbuf; |
570d7624 JB |
2588 | |
2589 | CHECK_STRING (filename, 0); | |
199607e4 | 2590 | absname = Fexpand_file_name (filename, Qnil); |
32f4334d RS |
2591 | |
2592 | /* If the file name has special constructs in it, | |
2593 | call the corresponding file handler. */ | |
199607e4 | 2594 | handler = Ffind_file_name_handler (absname, Qfile_exists_p); |
32f4334d | 2595 | if (!NILP (handler)) |
199607e4 | 2596 | return call2 (handler, Qfile_exists_p, absname); |
32f4334d | 2597 | |
199607e4 | 2598 | return (stat (XSTRING (absname)->data, &statbuf) >= 0) ? Qt : Qnil; |
570d7624 JB |
2599 | } |
2600 | ||
2601 | DEFUN ("file-executable-p", Ffile_executable_p, Sfile_executable_p, 1, 1, 0, | |
2602 | "Return t if FILENAME can be executed by you.\n\ | |
8b235fde | 2603 | For a directory, this means you can access files in that directory.") |
570d7624 JB |
2604 | (filename) |
2605 | Lisp_Object filename; | |
2606 | ||
2607 | { | |
199607e4 | 2608 | Lisp_Object absname; |
32f4334d | 2609 | Lisp_Object handler; |
570d7624 JB |
2610 | |
2611 | CHECK_STRING (filename, 0); | |
199607e4 | 2612 | absname = Fexpand_file_name (filename, Qnil); |
32f4334d RS |
2613 | |
2614 | /* If the file name has special constructs in it, | |
2615 | call the corresponding file handler. */ | |
199607e4 | 2616 | handler = Ffind_file_name_handler (absname, Qfile_executable_p); |
32f4334d | 2617 | if (!NILP (handler)) |
199607e4 | 2618 | return call2 (handler, Qfile_executable_p, absname); |
32f4334d | 2619 | |
199607e4 | 2620 | return (check_executable (XSTRING (absname)->data) ? Qt : Qnil); |
570d7624 JB |
2621 | } |
2622 | ||
2623 | DEFUN ("file-readable-p", Ffile_readable_p, Sfile_readable_p, 1, 1, 0, | |
2624 | "Return t if file FILENAME exists and you can read it.\n\ | |
2625 | See also `file-exists-p' and `file-attributes'.") | |
2626 | (filename) | |
2627 | Lisp_Object filename; | |
2628 | { | |
199607e4 | 2629 | Lisp_Object absname; |
32f4334d | 2630 | Lisp_Object handler; |
4018b5ef | 2631 | int desc; |
bb369dc6 RS |
2632 | int flags; |
2633 | struct stat statbuf; | |
570d7624 JB |
2634 | |
2635 | CHECK_STRING (filename, 0); | |
199607e4 | 2636 | absname = Fexpand_file_name (filename, Qnil); |
32f4334d RS |
2637 | |
2638 | /* If the file name has special constructs in it, | |
2639 | call the corresponding file handler. */ | |
199607e4 | 2640 | handler = Ffind_file_name_handler (absname, Qfile_readable_p); |
32f4334d | 2641 | if (!NILP (handler)) |
199607e4 | 2642 | return call2 (handler, Qfile_readable_p, absname); |
32f4334d | 2643 | |
199607e4 RS |
2644 | #ifdef DOS_NT |
2645 | /* Under MS-DOS and Windows, open does not work for directories. */ | |
2646 | if (access (XSTRING (absname)->data, 0) == 0) | |
a8a7d065 RS |
2647 | return Qt; |
2648 | return Qnil; | |
199607e4 | 2649 | #else /* not DOS_NT */ |
bb369dc6 RS |
2650 | flags = O_RDONLY; |
2651 | #if defined (S_ISFIFO) && defined (O_NONBLOCK) | |
2652 | /* Opening a fifo without O_NONBLOCK can wait. | |
2653 | We don't want to wait. But we don't want to mess wth O_NONBLOCK | |
2654 | except in the case of a fifo, on a system which handles it. */ | |
2655 | desc = stat (XSTRING (absname)->data, &statbuf); | |
2656 | if (desc < 0) | |
2657 | return Qnil; | |
2658 | if (S_ISFIFO (statbuf.st_mode)) | |
2659 | flags |= O_NONBLOCK; | |
2660 | #endif | |
2661 | desc = open (XSTRING (absname)->data, flags); | |
4018b5ef RS |
2662 | if (desc < 0) |
2663 | return Qnil; | |
2664 | close (desc); | |
2665 | return Qt; | |
199607e4 | 2666 | #endif /* not DOS_NT */ |
570d7624 JB |
2667 | } |
2668 | ||
f793dc6c RS |
2669 | /* Having this before file-symlink-p mysteriously caused it to be forgotten |
2670 | on the RT/PC. */ | |
2671 | DEFUN ("file-writable-p", Ffile_writable_p, Sfile_writable_p, 1, 1, 0, | |
2672 | "Return t if file FILENAME can be written or created by you.") | |
2673 | (filename) | |
2674 | Lisp_Object filename; | |
2675 | { | |
199607e4 | 2676 | Lisp_Object absname, dir; |
f793dc6c RS |
2677 | Lisp_Object handler; |
2678 | struct stat statbuf; | |
2679 | ||
2680 | CHECK_STRING (filename, 0); | |
199607e4 | 2681 | absname = Fexpand_file_name (filename, Qnil); |
f793dc6c RS |
2682 | |
2683 | /* If the file name has special constructs in it, | |
2684 | call the corresponding file handler. */ | |
199607e4 | 2685 | handler = Ffind_file_name_handler (absname, Qfile_writable_p); |
f793dc6c | 2686 | if (!NILP (handler)) |
199607e4 | 2687 | return call2 (handler, Qfile_writable_p, absname); |
f793dc6c | 2688 | |
199607e4 RS |
2689 | if (stat (XSTRING (absname)->data, &statbuf) >= 0) |
2690 | return (check_writable (XSTRING (absname)->data) | |
f793dc6c | 2691 | ? Qt : Qnil); |
199607e4 | 2692 | dir = Ffile_name_directory (absname); |
f793dc6c RS |
2693 | #ifdef VMS |
2694 | if (!NILP (dir)) | |
2695 | dir = Fdirectory_file_name (dir); | |
2696 | #endif /* VMS */ | |
2697 | #ifdef MSDOS | |
2698 | if (!NILP (dir)) | |
2699 | dir = Fdirectory_file_name (dir); | |
2700 | #endif /* MSDOS */ | |
2701 | return (check_writable (!NILP (dir) ? (char *) XSTRING (dir)->data : "") | |
2702 | ? Qt : Qnil); | |
2703 | } | |
2704 | \f | |
1f8653eb RS |
2705 | DEFUN ("access-file", Faccess_file, Saccess_file, 2, 2, 0, |
2706 | "Access file FILENAME, and get an error if that does not work.\n\ | |
2707 | The second argument STRING is used in the error message.\n\ | |
2708 | If there is no error, we return nil.") | |
2709 | (filename, string) | |
2710 | Lisp_Object filename, string; | |
2711 | { | |
2712 | Lisp_Object handler; | |
2713 | int fd; | |
2714 | ||
2715 | CHECK_STRING (filename, 0); | |
2716 | ||
2717 | /* If the file name has special constructs in it, | |
2718 | call the corresponding file handler. */ | |
2719 | handler = Ffind_file_name_handler (filename, Qaccess_file); | |
2720 | if (!NILP (handler)) | |
2721 | return call3 (handler, Qaccess_file, filename, string); | |
2722 | ||
2723 | fd = open (XSTRING (filename)->data, O_RDONLY); | |
2724 | if (fd < 0) | |
2725 | report_file_error (XSTRING (string)->data, Fcons (filename, Qnil)); | |
2726 | close (fd); | |
2727 | ||
2728 | return Qnil; | |
2729 | } | |
2730 | \f | |
570d7624 | 2731 | DEFUN ("file-symlink-p", Ffile_symlink_p, Sfile_symlink_p, 1, 1, 0, |
89de89c7 RS |
2732 | "Return non-nil if file FILENAME is the name of a symbolic link.\n\ |
2733 | The value is the name of the file to which it is linked.\n\ | |
2734 | Otherwise returns nil.") | |
570d7624 JB |
2735 | (filename) |
2736 | Lisp_Object filename; | |
2737 | { | |
2738 | #ifdef S_IFLNK | |
2739 | char *buf; | |
2740 | int bufsize; | |
2741 | int valsize; | |
2742 | Lisp_Object val; | |
32f4334d | 2743 | Lisp_Object handler; |
570d7624 JB |
2744 | |
2745 | CHECK_STRING (filename, 0); | |
2746 | filename = Fexpand_file_name (filename, Qnil); | |
2747 | ||
32f4334d RS |
2748 | /* If the file name has special constructs in it, |
2749 | call the corresponding file handler. */ | |
49307295 | 2750 | handler = Ffind_file_name_handler (filename, Qfile_symlink_p); |
32f4334d RS |
2751 | if (!NILP (handler)) |
2752 | return call2 (handler, Qfile_symlink_p, filename); | |
2753 | ||
570d7624 JB |
2754 | bufsize = 100; |
2755 | while (1) | |
2756 | { | |
2757 | buf = (char *) xmalloc (bufsize); | |
2758 | bzero (buf, bufsize); | |
2759 | valsize = readlink (XSTRING (filename)->data, buf, bufsize); | |
2760 | if (valsize < bufsize) break; | |
2761 | /* Buffer was not long enough */ | |
9ac0d9e0 | 2762 | xfree (buf); |
570d7624 JB |
2763 | bufsize *= 2; |
2764 | } | |
2765 | if (valsize == -1) | |
2766 | { | |
9ac0d9e0 | 2767 | xfree (buf); |
570d7624 JB |
2768 | return Qnil; |
2769 | } | |
2770 | val = make_string (buf, valsize); | |
9ac0d9e0 | 2771 | xfree (buf); |
570d7624 JB |
2772 | return val; |
2773 | #else /* not S_IFLNK */ | |
2774 | return Qnil; | |
2775 | #endif /* not S_IFLNK */ | |
2776 | } | |
2777 | ||
570d7624 JB |
2778 | DEFUN ("file-directory-p", Ffile_directory_p, Sfile_directory_p, 1, 1, 0, |
2779 | "Return t if file FILENAME is the name of a directory as a file.\n\ | |
2780 | A directory name spec may be given instead; then the value is t\n\ | |
2781 | if the directory so specified exists and really is a directory.") | |
2782 | (filename) | |
2783 | Lisp_Object filename; | |
2784 | { | |
199607e4 | 2785 | register Lisp_Object absname; |
570d7624 | 2786 | struct stat st; |
32f4334d | 2787 | Lisp_Object handler; |
570d7624 | 2788 | |
199607e4 | 2789 | absname = expand_and_dir_to_file (filename, current_buffer->directory); |
570d7624 | 2790 | |
32f4334d RS |
2791 | /* If the file name has special constructs in it, |
2792 | call the corresponding file handler. */ | |
199607e4 | 2793 | handler = Ffind_file_name_handler (absname, Qfile_directory_p); |
32f4334d | 2794 | if (!NILP (handler)) |
199607e4 | 2795 | return call2 (handler, Qfile_directory_p, absname); |
32f4334d | 2796 | |
199607e4 | 2797 | if (stat (XSTRING (absname)->data, &st) < 0) |
570d7624 JB |
2798 | return Qnil; |
2799 | return (st.st_mode & S_IFMT) == S_IFDIR ? Qt : Qnil; | |
2800 | } | |
2801 | ||
b72dea2a JB |
2802 | DEFUN ("file-accessible-directory-p", Ffile_accessible_directory_p, Sfile_accessible_directory_p, 1, 1, 0, |
2803 | "Return t if file FILENAME is the name of a directory as a file,\n\ | |
2804 | and files in that directory can be opened by you. In order to use a\n\ | |
2805 | directory as a buffer's current directory, this predicate must return true.\n\ | |
2806 | A directory name spec may be given instead; then the value is t\n\ | |
2807 | if the directory so specified exists and really is a readable and\n\ | |
2808 | searchable directory.") | |
2809 | (filename) | |
2810 | Lisp_Object filename; | |
2811 | { | |
32f4334d | 2812 | Lisp_Object handler; |
1a04498e | 2813 | int tem; |
d26859eb | 2814 | struct gcpro gcpro1; |
32f4334d RS |
2815 | |
2816 | /* If the file name has special constructs in it, | |
2817 | call the corresponding file handler. */ | |
49307295 | 2818 | handler = Ffind_file_name_handler (filename, Qfile_accessible_directory_p); |
32f4334d RS |
2819 | if (!NILP (handler)) |
2820 | return call2 (handler, Qfile_accessible_directory_p, filename); | |
2821 | ||
d26859eb KH |
2822 | /* It's an unlikely combination, but yes we really do need to gcpro: |
2823 | Suppose that file-accessible-directory-p has no handler, but | |
2824 | file-directory-p does have a handler; this handler causes a GC which | |
2825 | relocates the string in `filename'; and finally file-directory-p | |
2826 | returns non-nil. Then we would end up passing a garbaged string | |
2827 | to file-executable-p. */ | |
2828 | GCPRO1 (filename); | |
1a04498e KH |
2829 | tem = (NILP (Ffile_directory_p (filename)) |
2830 | || NILP (Ffile_executable_p (filename))); | |
d26859eb | 2831 | UNGCPRO; |
1a04498e | 2832 | return tem ? Qnil : Qt; |
b72dea2a JB |
2833 | } |
2834 | ||
f793dc6c RS |
2835 | DEFUN ("file-regular-p", Ffile_regular_p, Sfile_regular_p, 1, 1, 0, |
2836 | "Return t if file FILENAME is the name of a regular file.\n\ | |
2837 | This is the sort of file that holds an ordinary stream of data bytes.") | |
2838 | (filename) | |
2839 | Lisp_Object filename; | |
2840 | { | |
199607e4 | 2841 | register Lisp_Object absname; |
f793dc6c RS |
2842 | struct stat st; |
2843 | Lisp_Object handler; | |
2844 | ||
199607e4 | 2845 | absname = expand_and_dir_to_file (filename, current_buffer->directory); |
f793dc6c RS |
2846 | |
2847 | /* If the file name has special constructs in it, | |
2848 | call the corresponding file handler. */ | |
199607e4 | 2849 | handler = Ffind_file_name_handler (absname, Qfile_regular_p); |
f793dc6c | 2850 | if (!NILP (handler)) |
199607e4 | 2851 | return call2 (handler, Qfile_regular_p, absname); |
f793dc6c | 2852 | |
199607e4 | 2853 | if (stat (XSTRING (absname)->data, &st) < 0) |
f793dc6c RS |
2854 | return Qnil; |
2855 | return (st.st_mode & S_IFMT) == S_IFREG ? Qt : Qnil; | |
2856 | } | |
2857 | \f | |
570d7624 | 2858 | DEFUN ("file-modes", Ffile_modes, Sfile_modes, 1, 1, 0, |
3b7f6e60 | 2859 | "Return mode bits of file named FILENAME, as an integer.") |
570d7624 JB |
2860 | (filename) |
2861 | Lisp_Object filename; | |
2862 | { | |
199607e4 | 2863 | Lisp_Object absname; |
570d7624 | 2864 | struct stat st; |
32f4334d | 2865 | Lisp_Object handler; |
570d7624 | 2866 | |
199607e4 | 2867 | absname = expand_and_dir_to_file (filename, current_buffer->directory); |
570d7624 | 2868 | |
32f4334d RS |
2869 | /* If the file name has special constructs in it, |
2870 | call the corresponding file handler. */ | |
199607e4 | 2871 | handler = Ffind_file_name_handler (absname, Qfile_modes); |
32f4334d | 2872 | if (!NILP (handler)) |
199607e4 | 2873 | return call2 (handler, Qfile_modes, absname); |
32f4334d | 2874 | |
199607e4 | 2875 | if (stat (XSTRING (absname)->data, &st) < 0) |
570d7624 | 2876 | return Qnil; |
34ead71a | 2877 | #if defined (MSDOS) && __DJGPP__ < 2 |
199607e4 | 2878 | if (check_executable (XSTRING (absname)->data)) |
3be3c08e | 2879 | st.st_mode |= S_IEXEC; |
34ead71a | 2880 | #endif /* MSDOS && __DJGPP__ < 2 */ |
3ace87e3 | 2881 | |
570d7624 JB |
2882 | return make_number (st.st_mode & 07777); |
2883 | } | |
2884 | ||
2885 | DEFUN ("set-file-modes", Fset_file_modes, Sset_file_modes, 2, 2, 0, | |
3b7f6e60 | 2886 | "Set mode bits of file named FILENAME to MODE (an integer).\n\ |
570d7624 JB |
2887 | Only the 12 low bits of MODE are used.") |
2888 | (filename, mode) | |
2889 | Lisp_Object filename, mode; | |
2890 | { | |
199607e4 | 2891 | Lisp_Object absname; |
32f4334d | 2892 | Lisp_Object handler; |
570d7624 | 2893 | |
199607e4 | 2894 | absname = Fexpand_file_name (filename, current_buffer->directory); |
570d7624 JB |
2895 | CHECK_NUMBER (mode, 1); |
2896 | ||
32f4334d RS |
2897 | /* If the file name has special constructs in it, |
2898 | call the corresponding file handler. */ | |
199607e4 | 2899 | handler = Ffind_file_name_handler (absname, Qset_file_modes); |
32f4334d | 2900 | if (!NILP (handler)) |
199607e4 | 2901 | return call3 (handler, Qset_file_modes, absname, mode); |
32f4334d | 2902 | |
199607e4 RS |
2903 | if (chmod (XSTRING (absname)->data, XINT (mode)) < 0) |
2904 | report_file_error ("Doing chmod", Fcons (absname, Qnil)); | |
570d7624 JB |
2905 | |
2906 | return Qnil; | |
2907 | } | |
2908 | ||
c24e9a53 | 2909 | DEFUN ("set-default-file-modes", Fset_default_file_modes, Sset_default_file_modes, 1, 1, 0, |
5f85ea58 RS |
2910 | "Set the file permission bits for newly created files.\n\ |
2911 | The argument MODE should be an integer; only the low 9 bits are used.\n\ | |
36a8c287 | 2912 | This setting is inherited by subprocesses.") |
5f85ea58 RS |
2913 | (mode) |
2914 | Lisp_Object mode; | |
36a8c287 | 2915 | { |
5f85ea58 | 2916 | CHECK_NUMBER (mode, 0); |
199607e4 | 2917 | |
5f85ea58 | 2918 | umask ((~ XINT (mode)) & 0777); |
36a8c287 JB |
2919 | |
2920 | return Qnil; | |
2921 | } | |
2922 | ||
c24e9a53 | 2923 | DEFUN ("default-file-modes", Fdefault_file_modes, Sdefault_file_modes, 0, 0, 0, |
5f85ea58 RS |
2924 | "Return the default file protection for created files.\n\ |
2925 | The value is an integer.") | |
36a8c287 JB |
2926 | () |
2927 | { | |
5f85ea58 RS |
2928 | int realmask; |
2929 | Lisp_Object value; | |
36a8c287 | 2930 | |
5f85ea58 RS |
2931 | realmask = umask (0); |
2932 | umask (realmask); | |
36a8c287 | 2933 | |
46283abe | 2934 | XSETINT (value, (~ realmask) & 0777); |
5f85ea58 | 2935 | return value; |
36a8c287 | 2936 | } |
f793dc6c | 2937 | \f |
85ffea93 RS |
2938 | #ifdef unix |
2939 | ||
2940 | DEFUN ("unix-sync", Funix_sync, Sunix_sync, 0, 0, "", | |
2941 | "Tell Unix to finish all pending disk updates.") | |
2942 | () | |
2943 | { | |
2944 | sync (); | |
2945 | return Qnil; | |
2946 | } | |
2947 | ||
2948 | #endif /* unix */ | |
2949 | ||
570d7624 JB |
2950 | DEFUN ("file-newer-than-file-p", Ffile_newer_than_file_p, Sfile_newer_than_file_p, 2, 2, 0, |
2951 | "Return t if file FILE1 is newer than file FILE2.\n\ | |
2952 | If FILE1 does not exist, the answer is nil;\n\ | |
2953 | otherwise, if FILE2 does not exist, the answer is t.") | |
2954 | (file1, file2) | |
2955 | Lisp_Object file1, file2; | |
2956 | { | |
199607e4 | 2957 | Lisp_Object absname1, absname2; |
570d7624 JB |
2958 | struct stat st; |
2959 | int mtime1; | |
32f4334d | 2960 | Lisp_Object handler; |
09121adc | 2961 | struct gcpro gcpro1, gcpro2; |
570d7624 JB |
2962 | |
2963 | CHECK_STRING (file1, 0); | |
2964 | CHECK_STRING (file2, 0); | |
2965 | ||
199607e4 RS |
2966 | absname1 = Qnil; |
2967 | GCPRO2 (absname1, file2); | |
2968 | absname1 = expand_and_dir_to_file (file1, current_buffer->directory); | |
2969 | absname2 = expand_and_dir_to_file (file2, current_buffer->directory); | |
09121adc | 2970 | UNGCPRO; |
570d7624 | 2971 | |
32f4334d RS |
2972 | /* If the file name has special constructs in it, |
2973 | call the corresponding file handler. */ | |
199607e4 | 2974 | handler = Ffind_file_name_handler (absname1, Qfile_newer_than_file_p); |
51cf6d37 | 2975 | if (NILP (handler)) |
199607e4 | 2976 | handler = Ffind_file_name_handler (absname2, Qfile_newer_than_file_p); |
32f4334d | 2977 | if (!NILP (handler)) |
199607e4 | 2978 | return call3 (handler, Qfile_newer_than_file_p, absname1, absname2); |
32f4334d | 2979 | |
199607e4 | 2980 | if (stat (XSTRING (absname1)->data, &st) < 0) |
570d7624 JB |
2981 | return Qnil; |
2982 | ||
2983 | mtime1 = st.st_mtime; | |
2984 | ||
199607e4 | 2985 | if (stat (XSTRING (absname2)->data, &st) < 0) |
570d7624 JB |
2986 | return Qt; |
2987 | ||
2988 | return (mtime1 > st.st_mtime) ? Qt : Qnil; | |
2989 | } | |
2990 | \f | |
5e570b75 | 2991 | #ifdef DOS_NT |
4c3c22f3 | 2992 | Lisp_Object Qfind_buffer_file_type; |
5e570b75 | 2993 | #endif /* DOS_NT */ |
4c3c22f3 | 2994 | |
6fdaa9a0 KH |
2995 | #ifndef READ_BUF_SIZE |
2996 | #define READ_BUF_SIZE (64 << 10) | |
2997 | #endif | |
2998 | ||
570d7624 | 2999 | DEFUN ("insert-file-contents", Finsert_file_contents, Sinsert_file_contents, |
3d0387c0 | 3000 | 1, 5, 0, |
570d7624 | 3001 | "Insert contents of file FILENAME after point.\n\ |
7fded690 | 3002 | Returns list of absolute file name and length of data inserted.\n\ |
570d7624 JB |
3003 | If second argument VISIT is non-nil, the buffer's visited filename\n\ |
3004 | and last save file modtime are set, and it is marked unmodified.\n\ | |
3005 | If visiting and the file does not exist, visiting is completed\n\ | |
6fdaa9a0 | 3006 | before the error is signaled.\n\ |
7fded690 JB |
3007 | The optional third and fourth arguments BEG and END\n\ |
3008 | specify what portion of the file to insert.\n\ | |
3d0387c0 | 3009 | If VISIT is non-nil, BEG and END must be nil.\n\ |
94bec52a | 3010 | \n\ |
3d0387c0 RS |
3011 | If optional fifth argument REPLACE is non-nil,\n\ |
3012 | it means replace the current buffer contents (in the accessible portion)\n\ | |
3013 | with the file contents. This is better than simply deleting and inserting\n\ | |
3014 | the whole thing because (1) it preserves some marker positions\n\ | |
94bec52a RS |
3015 | and (2) it puts less data in the undo list.\n\ |
3016 | When REPLACE is non-nil, the value is the number of characters actually read,\n\ | |
6fdaa9a0 KH |
3017 | which is often less than the number of characters to be read.\n\ |
3018 | This does code conversion according to the value of\n\ | |
3019 | `coding-system-for-read' or `coding-system-alist', and sets the variable\n\ | |
3020 | `last-coding-system-used' to the coding system actually used.") | |
3d0387c0 RS |
3021 | (filename, visit, beg, end, replace) |
3022 | Lisp_Object filename, visit, beg, end, replace; | |
570d7624 JB |
3023 | { |
3024 | struct stat st; | |
3025 | register int fd; | |
3026 | register int inserted = 0; | |
3027 | register int how_much; | |
6fdaa9a0 | 3028 | register int unprocessed; |
570d7624 | 3029 | int count = specpdl_ptr - specpdl; |
1a04498e | 3030 | struct gcpro gcpro1, gcpro2, gcpro3; |
d6a3cc15 RS |
3031 | Lisp_Object handler, val, insval; |
3032 | Lisp_Object p; | |
7fded690 | 3033 | int total; |
53c34c46 | 3034 | int not_regular = 0; |
6fdaa9a0 KH |
3035 | char read_buf[READ_BUF_SIZE]; |
3036 | struct coding_system coding; | |
3dbcf3f6 | 3037 | unsigned char buffer[1 << 14]; |
727a0b4a | 3038 | int replace_handled = 0; |
32f4334d | 3039 | |
95385625 RS |
3040 | if (current_buffer->base_buffer && ! NILP (visit)) |
3041 | error ("Cannot do file visiting in an indirect buffer"); | |
3042 | ||
3043 | if (!NILP (current_buffer->read_only)) | |
3044 | Fbarf_if_buffer_read_only (); | |
3045 | ||
32f4334d | 3046 | val = Qnil; |
d6a3cc15 | 3047 | p = Qnil; |
32f4334d | 3048 | |
1a04498e | 3049 | GCPRO3 (filename, val, p); |
570d7624 JB |
3050 | |
3051 | CHECK_STRING (filename, 0); | |
3052 | filename = Fexpand_file_name (filename, Qnil); | |
3053 | ||
32f4334d RS |
3054 | /* If the file name has special constructs in it, |
3055 | call the corresponding file handler. */ | |
49307295 | 3056 | handler = Ffind_file_name_handler (filename, Qinsert_file_contents); |
32f4334d RS |
3057 | if (!NILP (handler)) |
3058 | { | |
3d0387c0 RS |
3059 | val = call6 (handler, Qinsert_file_contents, filename, |
3060 | visit, beg, end, replace); | |
32f4334d RS |
3061 | goto handled; |
3062 | } | |
3063 | ||
6fdaa9a0 KH |
3064 | /* Decide the coding-system of the file. */ |
3065 | { | |
3066 | Lisp_Object val = Vcoding_system_for_read; | |
719c80be KH |
3067 | if (NILP (current_buffer->enable_multibyte_characters)) |
3068 | val = Qnil; | |
3069 | else if (NILP (val)) | |
6fdaa9a0 KH |
3070 | { |
3071 | Lisp_Object args[6], coding_systems; | |
3072 | ||
3073 | args[0] = Qinsert_file_contents, args[1] = filename, args[2] = visit, | |
3074 | args[3] = beg, args[4] = end, args[5] = replace; | |
3075 | coding_systems = Ffind_coding_system (6, args); | |
3076 | val = CONSP (coding_systems) ? XCONS (coding_systems)->car : Qnil; | |
3077 | } | |
3078 | setup_coding_system (Fcheck_coding_system (val), &coding); | |
3079 | } | |
3080 | ||
570d7624 JB |
3081 | fd = -1; |
3082 | ||
3083 | #ifndef APOLLO | |
99bc28f4 | 3084 | if (stat (XSTRING (filename)->data, &st) < 0) |
570d7624 | 3085 | #else |
4018b5ef | 3086 | if ((fd = open (XSTRING (filename)->data, O_RDONLY)) < 0 |
570d7624 JB |
3087 | || fstat (fd, &st) < 0) |
3088 | #endif /* not APOLLO */ | |
3089 | { | |
3090 | if (fd >= 0) close (fd); | |
99bc28f4 | 3091 | badopen: |
265a9e55 | 3092 | if (NILP (visit)) |
570d7624 JB |
3093 | report_file_error ("Opening input file", Fcons (filename, Qnil)); |
3094 | st.st_mtime = -1; | |
3095 | how_much = 0; | |
3096 | goto notfound; | |
3097 | } | |
3098 | ||
99bc28f4 | 3099 | #ifdef S_IFREG |
be53b411 JB |
3100 | /* This code will need to be changed in order to work on named |
3101 | pipes, and it's probably just not worth it. So we should at | |
3102 | least signal an error. */ | |
99bc28f4 | 3103 | if (!S_ISREG (st.st_mode)) |
330bfe57 | 3104 | { |
d4b8687b RS |
3105 | not_regular = 1; |
3106 | ||
3107 | if (! NILP (visit)) | |
3108 | goto notfound; | |
3109 | ||
3110 | if (! NILP (replace) || ! NILP (beg) || ! NILP (end)) | |
330bfe57 RS |
3111 | Fsignal (Qfile_error, |
3112 | Fcons (build_string ("not a regular file"), | |
3113 | Fcons (filename, Qnil))); | |
330bfe57 | 3114 | } |
be53b411 JB |
3115 | #endif |
3116 | ||
99bc28f4 | 3117 | if (fd < 0) |
4018b5ef | 3118 | if ((fd = open (XSTRING (filename)->data, O_RDONLY)) < 0) |
99bc28f4 KH |
3119 | goto badopen; |
3120 | ||
3121 | /* Replacement should preserve point as it preserves markers. */ | |
3122 | if (!NILP (replace)) | |
3123 | record_unwind_protect (restore_point_unwind, Fpoint_marker ()); | |
3124 | ||
3125 | record_unwind_protect (close_file_unwind, make_number (fd)); | |
3126 | ||
570d7624 | 3127 | /* Supposedly happens on VMS. */ |
d4b8687b | 3128 | if (! not_regular && st.st_size < 0) |
570d7624 | 3129 | error ("File size is negative"); |
be53b411 | 3130 | |
7fded690 JB |
3131 | if (!NILP (beg) || !NILP (end)) |
3132 | if (!NILP (visit)) | |
3133 | error ("Attempt to visit less than an entire file"); | |
3134 | ||
3135 | if (!NILP (beg)) | |
3136 | CHECK_NUMBER (beg, 0); | |
3137 | else | |
2acfd7ae | 3138 | XSETFASTINT (beg, 0); |
7fded690 JB |
3139 | |
3140 | if (!NILP (end)) | |
3141 | CHECK_NUMBER (end, 0); | |
3142 | else | |
3143 | { | |
d4b8687b RS |
3144 | if (! not_regular) |
3145 | { | |
3146 | XSETINT (end, st.st_size); | |
3147 | if (XINT (end) != st.st_size) | |
3148 | error ("Maximum buffer size exceeded"); | |
3149 | } | |
7fded690 JB |
3150 | } |
3151 | ||
3d0387c0 RS |
3152 | /* If requested, replace the accessible part of the buffer |
3153 | with the file contents. Avoid replacing text at the | |
3154 | beginning or end of the buffer that matches the file contents; | |
3dbcf3f6 RS |
3155 | that preserves markers pointing to the unchanged parts. |
3156 | ||
3157 | Here we implement this feature in an optimized way | |
3158 | for the case where code conversion is NOT needed. | |
3159 | The following if-statement handles the case of conversion | |
727a0b4a RS |
3160 | in a less optimal way. |
3161 | ||
3162 | If the code conversion is "automatic" then we try using this | |
3163 | method and hope for the best. | |
3164 | But if we discover the need for conversion, we give up on this method | |
3165 | and let the following if-statement handle the replace job. */ | |
3dbcf3f6 | 3166 | if (!NILP (replace) |
727a0b4a | 3167 | && (! CODING_REQUIRE_CONVERSION (&coding) |
0ef69138 | 3168 | || (coding.type == coding_type_undecided |
b00ca0d7 | 3169 | && ! CODING_REQUIRE_EOL_CONVERSION (&coding)) |
0ef69138 | 3170 | || (coding.eol_type == CODING_EOL_UNDECIDED |
b00ca0d7 | 3171 | && ! CODING_REQUIRE_TEXT_CONVERSION (&coding)))) |
3d0387c0 | 3172 | { |
3d0387c0 RS |
3173 | int same_at_start = BEGV; |
3174 | int same_at_end = ZV; | |
9c28748f | 3175 | int overlap; |
6fdaa9a0 KH |
3176 | /* There is still a possibility we will find the need to do code |
3177 | conversion. If that happens, we set this variable to 1 to | |
727a0b4a | 3178 | give up on handling REPLACE in the optimized way. */ |
6fdaa9a0 | 3179 | int giveup_match_end = 0; |
9c28748f | 3180 | |
4d2a0879 RS |
3181 | if (XINT (beg) != 0) |
3182 | { | |
3183 | if (lseek (fd, XINT (beg), 0) < 0) | |
3184 | report_file_error ("Setting file position", | |
3185 | Fcons (filename, Qnil)); | |
3186 | } | |
3187 | ||
3d0387c0 RS |
3188 | immediate_quit = 1; |
3189 | QUIT; | |
3190 | /* Count how many chars at the start of the file | |
3191 | match the text at the beginning of the buffer. */ | |
3192 | while (1) | |
3193 | { | |
3194 | int nread, bufpos; | |
3195 | ||
3196 | nread = read (fd, buffer, sizeof buffer); | |
3197 | if (nread < 0) | |
3198 | error ("IO error reading %s: %s", | |
3199 | XSTRING (filename)->data, strerror (errno)); | |
3200 | else if (nread == 0) | |
3201 | break; | |
6fdaa9a0 | 3202 | |
0ef69138 | 3203 | if (coding.type == coding_type_undecided) |
727a0b4a RS |
3204 | detect_coding (&coding, buffer, nread); |
3205 | if (CODING_REQUIRE_TEXT_CONVERSION (&coding)) | |
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 RS |
3214 | detect_eol (&coding, buffer, nread); |
3215 | if (CODING_REQUIRE_EOL_CONVERSION (&coding)) | |
3216 | /* We found that the format of eol should be decoded. | |
3217 | Let's give up here. */ | |
3218 | { | |
3219 | giveup_match_end = 1; | |
3220 | break; | |
3221 | } | |
3222 | ||
3d0387c0 RS |
3223 | bufpos = 0; |
3224 | while (bufpos < nread && same_at_start < ZV | |
6fdaa9a0 | 3225 | && FETCH_BYTE (same_at_start) == buffer[bufpos]) |
3d0387c0 RS |
3226 | same_at_start++, bufpos++; |
3227 | /* If we found a discrepancy, stop the scan. | |
8e6208c5 | 3228 | Otherwise loop around and scan the next bufferful. */ |
3d0387c0 RS |
3229 | if (bufpos != nread) |
3230 | break; | |
3231 | } | |
3232 | immediate_quit = 0; | |
3233 | /* If the file matches the buffer completely, | |
3234 | there's no need to replace anything. */ | |
4d2a0879 | 3235 | if (same_at_start - BEGV == XINT (end)) |
3d0387c0 RS |
3236 | { |
3237 | close (fd); | |
a1d2b64a | 3238 | specpdl_ptr--; |
1051b3b3 RS |
3239 | /* Truncate the buffer to the size of the file. */ |
3240 | del_range_1 (same_at_start, same_at_end, 0); | |
3d0387c0 RS |
3241 | goto handled; |
3242 | } | |
3243 | immediate_quit = 1; | |
3244 | QUIT; | |
3245 | /* Count how many chars at the end of the file | |
6fdaa9a0 KH |
3246 | match the text at the end of the buffer. But, if we have |
3247 | already found that decoding is necessary, don't waste time. */ | |
3248 | while (!giveup_match_end) | |
3d0387c0 RS |
3249 | { |
3250 | int total_read, nread, bufpos, curpos, trial; | |
3251 | ||
3252 | /* At what file position are we now scanning? */ | |
4d2a0879 | 3253 | curpos = XINT (end) - (ZV - same_at_end); |
fc81fa9e KH |
3254 | /* If the entire file matches the buffer tail, stop the scan. */ |
3255 | if (curpos == 0) | |
3256 | break; | |
3d0387c0 RS |
3257 | /* How much can we scan in the next step? */ |
3258 | trial = min (curpos, sizeof buffer); | |
3259 | if (lseek (fd, curpos - trial, 0) < 0) | |
3260 | report_file_error ("Setting file position", | |
3261 | Fcons (filename, Qnil)); | |
3262 | ||
3263 | total_read = 0; | |
3264 | while (total_read < trial) | |
3265 | { | |
3266 | nread = read (fd, buffer + total_read, trial - total_read); | |
3267 | if (nread <= 0) | |
3268 | error ("IO error reading %s: %s", | |
3269 | XSTRING (filename)->data, strerror (errno)); | |
3270 | total_read += nread; | |
3271 | } | |
8e6208c5 | 3272 | /* Scan this bufferful from the end, comparing with |
3d0387c0 RS |
3273 | the Emacs buffer. */ |
3274 | bufpos = total_read; | |
3275 | /* Compare with same_at_start to avoid counting some buffer text | |
3276 | as matching both at the file's beginning and at the end. */ | |
3277 | while (bufpos > 0 && same_at_end > same_at_start | |
6fdaa9a0 | 3278 | && FETCH_BYTE (same_at_end - 1) == buffer[bufpos - 1]) |
3d0387c0 | 3279 | same_at_end--, bufpos--; |
727a0b4a | 3280 | |
3d0387c0 | 3281 | /* If we found a discrepancy, stop the scan. |
8e6208c5 | 3282 | Otherwise loop around and scan the preceding bufferful. */ |
3d0387c0 | 3283 | if (bufpos != 0) |
727a0b4a RS |
3284 | { |
3285 | /* If this discrepancy is because of code conversion, | |
3286 | we cannot use this method; giveup and try the other. */ | |
3287 | if (same_at_end > same_at_start | |
3288 | && FETCH_BYTE (same_at_end - 1) >= 0200 | |
3289 | && ! NILP (current_buffer->enable_multibyte_characters)) | |
3290 | giveup_match_end = 1; | |
3291 | break; | |
3292 | } | |
3d0387c0 RS |
3293 | } |
3294 | immediate_quit = 0; | |
9c28748f | 3295 | |
727a0b4a RS |
3296 | if (! giveup_match_end) |
3297 | { | |
3298 | /* We win! We can handle REPLACE the optimized way. */ | |
9c28748f | 3299 | |
727a0b4a RS |
3300 | /* Don't try to reuse the same piece of text twice. */ |
3301 | overlap = same_at_start - BEGV - (same_at_end + st.st_size - ZV); | |
3302 | if (overlap > 0) | |
3303 | same_at_end += overlap; | |
9c28748f | 3304 | |
727a0b4a RS |
3305 | /* Arrange to read only the nonmatching middle part of the file. */ |
3306 | XSETFASTINT (beg, XINT (beg) + (same_at_start - BEGV)); | |
3307 | XSETFASTINT (end, XINT (end) - (ZV - same_at_end)); | |
3dbcf3f6 | 3308 | |
727a0b4a RS |
3309 | del_range_1 (same_at_start, same_at_end, 0); |
3310 | /* Insert from the file at the proper position. */ | |
3311 | SET_PT (same_at_start); | |
3312 | ||
3313 | /* If display currently starts at beginning of line, | |
3314 | keep it that way. */ | |
3315 | if (XBUFFER (XWINDOW (selected_window)->buffer) == current_buffer) | |
3316 | XWINDOW (selected_window)->start_at_line_beg = Fbolp (); | |
3317 | ||
3318 | replace_handled = 1; | |
3319 | } | |
3dbcf3f6 RS |
3320 | } |
3321 | ||
3322 | /* If requested, replace the accessible part of the buffer | |
3323 | with the file contents. Avoid replacing text at the | |
3324 | beginning or end of the buffer that matches the file contents; | |
3325 | that preserves markers pointing to the unchanged parts. | |
3326 | ||
3327 | Here we implement this feature for the case where code conversion | |
3328 | is needed, in a simple way that needs a lot of memory. | |
3329 | The preceding if-statement handles the case of no conversion | |
3330 | in a more optimized way. */ | |
727a0b4a | 3331 | if (!NILP (replace) && ! replace_handled) |
3dbcf3f6 RS |
3332 | { |
3333 | int same_at_start = BEGV; | |
3334 | int same_at_end = ZV; | |
3335 | int overlap; | |
3336 | int bufpos; | |
3337 | /* Make sure that the gap is large enough. */ | |
3338 | int bufsize = 2 * st.st_size; | |
b00ca0d7 | 3339 | unsigned char *conversion_buffer = (unsigned char *) xmalloc (bufsize); |
3dbcf3f6 RS |
3340 | |
3341 | /* First read the whole file, performing code conversion into | |
3342 | CONVERSION_BUFFER. */ | |
3343 | ||
727a0b4a RS |
3344 | if (lseek (fd, XINT (beg), 0) < 0) |
3345 | { | |
3346 | free (conversion_buffer); | |
3347 | report_file_error ("Setting file position", | |
3348 | Fcons (filename, Qnil)); | |
3349 | } | |
3350 | ||
3dbcf3f6 RS |
3351 | total = st.st_size; /* Total bytes in the file. */ |
3352 | how_much = 0; /* Bytes read from file so far. */ | |
3353 | inserted = 0; /* Bytes put into CONVERSION_BUFFER so far. */ | |
3354 | unprocessed = 0; /* Bytes not processed in previous loop. */ | |
3355 | ||
3356 | while (how_much < total) | |
3357 | { | |
3358 | /* try is reserved in some compilers (Microsoft C) */ | |
3359 | int trytry = min (total - how_much, READ_BUF_SIZE - unprocessed); | |
3360 | char *destination = read_buf + unprocessed; | |
3361 | int this; | |
3362 | ||
3363 | /* Allow quitting out of the actual I/O. */ | |
3364 | immediate_quit = 1; | |
3365 | QUIT; | |
3366 | this = read (fd, destination, trytry); | |
3367 | immediate_quit = 0; | |
3368 | ||
3369 | if (this < 0 || this + unprocessed == 0) | |
3370 | { | |
3371 | how_much = this; | |
3372 | break; | |
3373 | } | |
3374 | ||
3375 | how_much += this; | |
3376 | ||
3377 | if (CODING_REQUIRE_CONVERSION (&coding)) | |
3378 | { | |
3379 | int require, produced, consumed; | |
3380 | ||
3381 | this += unprocessed; | |
3382 | ||
3383 | /* If we are using more space than estimated, | |
3384 | make CONVERSION_BUFFER bigger. */ | |
3385 | require = decoding_buffer_size (&coding, this); | |
3386 | if (inserted + require + 2 * (total - how_much) > bufsize) | |
3387 | { | |
3388 | bufsize = inserted + require + 2 * (total - how_much); | |
92cf1086 | 3389 | conversion_buffer = (unsigned char *) xrealloc (conversion_buffer, bufsize); |
3dbcf3f6 RS |
3390 | } |
3391 | ||
3392 | /* Convert this batch with results in CONVERSION_BUFFER. */ | |
3393 | if (how_much >= total) /* This is the last block. */ | |
3394 | coding.last_block = 1; | |
3395 | produced = decode_coding (&coding, read_buf, | |
3396 | conversion_buffer + inserted, | |
3397 | this, bufsize - inserted, | |
3398 | &consumed); | |
3399 | ||
3400 | /* Save for next iteration whatever we didn't convert. */ | |
3401 | unprocessed = this - consumed; | |
3402 | bcopy (read_buf + consumed, read_buf, unprocessed); | |
3403 | this = produced; | |
3404 | } | |
3405 | ||
3406 | inserted += this; | |
3407 | } | |
3408 | ||
3409 | /* At this point, INSERTED is how many characters | |
3410 | are present in CONVERSION_BUFFER. | |
3411 | HOW_MUCH should equal TOTAL, | |
3412 | or should be <= 0 if we couldn't read the file. */ | |
3413 | ||
3414 | if (how_much < 0) | |
3415 | { | |
3416 | free (conversion_buffer); | |
3417 | ||
3418 | if (how_much == -1) | |
3419 | error ("IO error reading %s: %s", | |
3420 | XSTRING (filename)->data, strerror (errno)); | |
3421 | else if (how_much == -2) | |
3422 | error ("maximum buffer size exceeded"); | |
3423 | } | |
3424 | ||
3425 | /* Compare the beginning of the converted file | |
3426 | with the buffer text. */ | |
3427 | ||
3428 | bufpos = 0; | |
3429 | while (bufpos < inserted && same_at_start < same_at_end | |
3430 | && FETCH_BYTE (same_at_start) == conversion_buffer[bufpos]) | |
3431 | same_at_start++, bufpos++; | |
3432 | ||
3433 | /* If the file matches the buffer completely, | |
3434 | there's no need to replace anything. */ | |
3435 | ||
3436 | if (bufpos == inserted) | |
3437 | { | |
3438 | free (conversion_buffer); | |
3439 | close (fd); | |
3440 | specpdl_ptr--; | |
3441 | /* Truncate the buffer to the size of the file. */ | |
3442 | del_range_1 (same_at_start, same_at_end, 0); | |
3443 | goto handled; | |
3444 | } | |
3445 | ||
3446 | /* Scan this bufferful from the end, comparing with | |
3447 | the Emacs buffer. */ | |
3448 | bufpos = inserted; | |
3449 | ||
3450 | /* Compare with same_at_start to avoid counting some buffer text | |
3451 | as matching both at the file's beginning and at the end. */ | |
3452 | while (bufpos > 0 && same_at_end > same_at_start | |
3453 | && FETCH_BYTE (same_at_end - 1) == conversion_buffer[bufpos - 1]) | |
3454 | same_at_end--, bufpos--; | |
3455 | ||
3456 | /* Don't try to reuse the same piece of text twice. */ | |
3457 | overlap = same_at_start - BEGV - (same_at_end + inserted - ZV); | |
3458 | if (overlap > 0) | |
3459 | same_at_end += overlap; | |
3460 | ||
727a0b4a RS |
3461 | /* If display currently starts at beginning of line, |
3462 | keep it that way. */ | |
3463 | if (XBUFFER (XWINDOW (selected_window)->buffer) == current_buffer) | |
3464 | XWINDOW (selected_window)->start_at_line_beg = Fbolp (); | |
3465 | ||
3dbcf3f6 RS |
3466 | /* Replace the chars that we need to replace, |
3467 | and update INSERTED to equal the number of bytes | |
3468 | we are taking from the file. */ | |
3469 | inserted -= (Z - same_at_end) + (same_at_start - BEG); | |
3470 | move_gap (same_at_start); | |
3471 | del_range_1 (same_at_start, same_at_end, 0); | |
0342d8c5 RS |
3472 | SET_PT (same_at_start); |
3473 | insert_1 (conversion_buffer + same_at_start - BEG, inserted, 0, 0); | |
3dbcf3f6 RS |
3474 | |
3475 | free (conversion_buffer); | |
3476 | close (fd); | |
3477 | specpdl_ptr--; | |
3478 | ||
3dbcf3f6 | 3479 | goto handled; |
3d0387c0 RS |
3480 | } |
3481 | ||
d4b8687b RS |
3482 | if (! not_regular) |
3483 | { | |
3484 | register Lisp_Object temp; | |
7fded690 | 3485 | |
d4b8687b | 3486 | total = XINT (end) - XINT (beg); |
570d7624 | 3487 | |
d4b8687b RS |
3488 | /* Make sure point-max won't overflow after this insertion. */ |
3489 | XSETINT (temp, total); | |
3490 | if (total != XINT (temp)) | |
3491 | error ("Maximum buffer size exceeded"); | |
3492 | } | |
3493 | else | |
3494 | /* For a special file, all we can do is guess. */ | |
3495 | total = READ_BUF_SIZE; | |
570d7624 | 3496 | |
57d8d468 | 3497 | if (NILP (visit) && total > 0) |
7fe52289 | 3498 | prepare_to_modify_buffer (PT, PT); |
570d7624 | 3499 | |
7fe52289 | 3500 | move_gap (PT); |
7fded690 JB |
3501 | if (GAP_SIZE < total) |
3502 | make_gap (total - GAP_SIZE); | |
3503 | ||
a1d2b64a | 3504 | if (XINT (beg) != 0 || !NILP (replace)) |
7fded690 JB |
3505 | { |
3506 | if (lseek (fd, XINT (beg), 0) < 0) | |
3507 | report_file_error ("Setting file position", Fcons (filename, Qnil)); | |
3508 | } | |
3509 | ||
6fdaa9a0 KH |
3510 | /* In the following loop, HOW_MUCH contains the total bytes read so |
3511 | far. Before exiting the loop, it is set to -1 if I/O error | |
3512 | occurs, set to -2 if the maximum buffer size is exceeded. */ | |
a1d2b64a | 3513 | how_much = 0; |
6fdaa9a0 KH |
3514 | /* Total bytes inserted. */ |
3515 | inserted = 0; | |
3516 | /* Bytes not processed in the previous loop because short gap size. */ | |
3517 | unprocessed = 0; | |
3518 | while (how_much < total) | |
570d7624 | 3519 | { |
5e570b75 | 3520 | /* try is reserved in some compilers (Microsoft C) */ |
6fdaa9a0 KH |
3521 | int trytry = min (total - how_much, READ_BUF_SIZE - unprocessed); |
3522 | char *destination = (CODING_REQUIRE_CONVERSION (&coding) | |
3523 | ? read_buf + unprocessed | |
3524 | : (char *) (POS_ADDR (PT + inserted - 1) + 1)); | |
b5148e85 RS |
3525 | int this; |
3526 | ||
3527 | /* Allow quitting out of the actual I/O. */ | |
3528 | immediate_quit = 1; | |
3529 | QUIT; | |
6fdaa9a0 | 3530 | this = read (fd, destination, trytry); |
b5148e85 | 3531 | immediate_quit = 0; |
570d7624 | 3532 | |
6fdaa9a0 | 3533 | if (this < 0 || this + unprocessed == 0) |
570d7624 JB |
3534 | { |
3535 | how_much = this; | |
3536 | break; | |
3537 | } | |
3538 | ||
d4b8687b RS |
3539 | /* For a regular file, where TOTAL is the real size, |
3540 | count HOW_MUCH to compare with it. | |
3541 | For a special file, where TOTAL is just a buffer size, | |
3542 | so don't bother counting in HOW_MUCH. | |
3543 | (INSERTED is where we count the number of characters inserted.) */ | |
3544 | if (! not_regular) | |
3545 | how_much += this; | |
6fdaa9a0 KH |
3546 | |
3547 | if (CODING_REQUIRE_CONVERSION (&coding)) | |
3548 | { | |
3549 | int require, produced, consumed; | |
3550 | ||
3551 | this += unprocessed; | |
3552 | /* Make sure that the gap is large enough. */ | |
3553 | require = decoding_buffer_size (&coding, this); | |
3554 | if (GAP_SIZE < require) | |
3555 | make_gap (require - GAP_SIZE); | |
d4b8687b RS |
3556 | |
3557 | if (! not_regular) | |
3558 | { | |
3559 | if (how_much >= total) /* This is the last block. */ | |
3560 | coding.last_block = 1; | |
3561 | } | |
3562 | else | |
3563 | { | |
3564 | /* If we encounter EOF, say it is the last block. (The | |
3565 | data this will apply to is the UNPROCESSED characters | |
3566 | carried over from the last batch.) */ | |
3567 | if (this == 0) | |
3568 | coding.last_block = 1; | |
3569 | } | |
3570 | ||
6fdaa9a0 KH |
3571 | produced = decode_coding (&coding, read_buf, |
3572 | POS_ADDR (PT + inserted - 1) + 1, | |
3573 | this, GAP_SIZE, &consumed); | |
3574 | if (produced > 0) | |
3575 | { | |
3576 | Lisp_Object temp; | |
3577 | ||
3578 | XSET (temp, Lisp_Int, Z + produced); | |
3579 | if (Z + produced != XINT (temp)) | |
3580 | { | |
3581 | how_much = -2; | |
3582 | break; | |
3583 | } | |
3584 | } | |
3585 | unprocessed = this - consumed; | |
3586 | bcopy (read_buf + consumed, read_buf, unprocessed); | |
3587 | this = produced; | |
3588 | } | |
3589 | ||
570d7624 JB |
3590 | GPT += this; |
3591 | GAP_SIZE -= this; | |
3592 | ZV += this; | |
3593 | Z += this; | |
6fdaa9a0 KH |
3594 | if (GAP_SIZE > 0) |
3595 | /* Put an anchor to ensure multi-byte form ends at gap. */ | |
3596 | *GPT_ADDR = 0; | |
570d7624 JB |
3597 | inserted += this; |
3598 | } | |
3599 | ||
6fdaa9a0 KH |
3600 | /* We don't have to consider file type of MSDOS because all files |
3601 | are read as binary and end-of-line format has already been | |
3602 | decoded appropriately. */ | |
3603 | #if 0 | |
5e570b75 | 3604 | #ifdef DOS_NT |
4c3c22f3 RS |
3605 | /* Demacs 1.1.1 91/10/16 HIRANO Satoshi, MW July 1993 */ |
3606 | /* Determine file type from name and remove LFs from CR-LFs if the file | |
3607 | is deemed to be a text file. */ | |
3608 | { | |
bf162ea8 RS |
3609 | current_buffer->buffer_file_type |
3610 | = call1 (Qfind_buffer_file_type, filename); | |
bf162ea8 | 3611 | if (NILP (current_buffer->buffer_file_type)) |
4c3c22f3 | 3612 | { |
a1d2b64a | 3613 | int reduced_size |
6fdaa9a0 | 3614 | = inserted - crlf_to_lf (inserted, POS_ADDR (PT - 1) + 1); |
4c3c22f3 RS |
3615 | ZV -= reduced_size; |
3616 | Z -= reduced_size; | |
3617 | GPT -= reduced_size; | |
3618 | GAP_SIZE += reduced_size; | |
3619 | inserted -= reduced_size; | |
3620 | } | |
3621 | } | |
5e570b75 | 3622 | #endif /* DOS_NT */ |
6fdaa9a0 | 3623 | #endif /* 0 */ |
4c3c22f3 | 3624 | |
570d7624 | 3625 | if (inserted > 0) |
7d8451f1 | 3626 | { |
7fe52289 | 3627 | record_insert (PT, inserted); |
8d4e077b JA |
3628 | |
3629 | /* Only defined if Emacs is compiled with USE_TEXT_PROPERTIES */ | |
7fe52289 | 3630 | offset_intervals (current_buffer, PT, inserted); |
7d8451f1 RS |
3631 | MODIFF++; |
3632 | } | |
570d7624 JB |
3633 | |
3634 | close (fd); | |
3635 | ||
a1d2b64a RS |
3636 | /* Discard the unwind protect for closing the file. */ |
3637 | specpdl_ptr--; | |
570d7624 | 3638 | |
6fdaa9a0 | 3639 | if (how_much == -1) |
570d7624 | 3640 | error ("IO error reading %s: %s", |
ce97267f | 3641 | XSTRING (filename)->data, strerror (errno)); |
6fdaa9a0 KH |
3642 | else if (how_much == -2) |
3643 | error ("maximum buffer size exceeded"); | |
570d7624 JB |
3644 | |
3645 | notfound: | |
32f4334d | 3646 | handled: |
570d7624 | 3647 | |
265a9e55 | 3648 | if (!NILP (visit)) |
570d7624 | 3649 | { |
cfadd376 RS |
3650 | if (!EQ (current_buffer->undo_list, Qt)) |
3651 | current_buffer->undo_list = Qnil; | |
570d7624 JB |
3652 | #ifdef APOLLO |
3653 | stat (XSTRING (filename)->data, &st); | |
3654 | #endif | |
62bcf009 | 3655 | |
a7e82472 RS |
3656 | if (NILP (handler)) |
3657 | { | |
3658 | current_buffer->modtime = st.st_mtime; | |
3659 | current_buffer->filename = filename; | |
3660 | } | |
62bcf009 | 3661 | |
95385625 | 3662 | SAVE_MODIFF = MODIFF; |
570d7624 | 3663 | current_buffer->auto_save_modified = MODIFF; |
2acfd7ae | 3664 | XSETFASTINT (current_buffer->save_length, Z - BEG); |
570d7624 | 3665 | #ifdef CLASH_DETECTION |
32f4334d RS |
3666 | if (NILP (handler)) |
3667 | { | |
f471f4c2 RS |
3668 | if (!NILP (current_buffer->file_truename)) |
3669 | unlock_file (current_buffer->file_truename); | |
32f4334d RS |
3670 | unlock_file (filename); |
3671 | } | |
570d7624 | 3672 | #endif /* CLASH_DETECTION */ |
330bfe57 RS |
3673 | if (not_regular) |
3674 | Fsignal (Qfile_error, | |
3675 | Fcons (build_string ("not a regular file"), | |
3676 | Fcons (filename, Qnil))); | |
3677 | ||
570d7624 | 3678 | /* If visiting nonexistent file, return nil. */ |
32f4334d | 3679 | if (current_buffer->modtime == -1) |
570d7624 JB |
3680 | report_file_error ("Opening input file", Fcons (filename, Qnil)); |
3681 | } | |
3682 | ||
0d420e88 BG |
3683 | /* Decode file format */ |
3684 | if (inserted > 0) | |
3685 | { | |
199607e4 | 3686 | insval = call3 (Qformat_decode, |
0d420e88 BG |
3687 | Qnil, make_number (inserted), visit); |
3688 | CHECK_NUMBER (insval, 0); | |
3689 | inserted = XFASTINT (insval); | |
3690 | } | |
3691 | ||
0342d8c5 RS |
3692 | /* Call after-change hooks for the inserted text, aside from the case |
3693 | of normal visiting (not with REPLACE), which is done in a new buffer | |
3694 | "before" the buffer is changed. */ | |
3695 | if (inserted > 0 && total > 0 | |
3696 | && (NILP (visit) || !NILP (replace))) | |
7fe52289 | 3697 | signal_after_change (PT, 0, inserted); |
199607e4 | 3698 | |
d6a3cc15 RS |
3699 | if (inserted > 0) |
3700 | { | |
3701 | p = Vafter_insert_file_functions; | |
6fdaa9a0 KH |
3702 | if (!NILP (coding.post_read_conversion)) |
3703 | p = Fcons (coding.post_read_conversion, p); | |
3704 | ||
d6a3cc15 RS |
3705 | while (!NILP (p)) |
3706 | { | |
3707 | insval = call1 (Fcar (p), make_number (inserted)); | |
3708 | if (!NILP (insval)) | |
3709 | { | |
3710 | CHECK_NUMBER (insval, 0); | |
3711 | inserted = XFASTINT (insval); | |
3712 | } | |
3713 | QUIT; | |
3714 | p = Fcdr (p); | |
3715 | } | |
3716 | } | |
3717 | ||
a1d2b64a RS |
3718 | if (NILP (val)) |
3719 | val = Fcons (filename, | |
3720 | Fcons (make_number (inserted), | |
3721 | Qnil)); | |
3722 | ||
3723 | RETURN_UNGCPRO (unbind_to (count, val)); | |
570d7624 | 3724 | } |
7fded690 | 3725 | \f |
d6a3cc15 RS |
3726 | static Lisp_Object build_annotations (); |
3727 | ||
6fc6f94b | 3728 | /* If build_annotations switched buffers, switch back to BUF. |
6fdaa9a0 KH |
3729 | Kill the temporary buffer that was selected in the meantime. |
3730 | ||
3731 | Since this kill only the last temporary buffer, some buffers remain | |
3732 | not killed if build_annotations switched buffers more than once. | |
3733 | -- K.Handa */ | |
6fc6f94b | 3734 | |
199607e4 | 3735 | static Lisp_Object |
6fc6f94b RS |
3736 | build_annotations_unwind (buf) |
3737 | Lisp_Object buf; | |
3738 | { | |
3739 | Lisp_Object tembuf; | |
3740 | ||
3741 | if (XBUFFER (buf) == current_buffer) | |
3742 | return Qnil; | |
3743 | tembuf = Fcurrent_buffer (); | |
3744 | Fset_buffer (buf); | |
3745 | Fkill_buffer (tembuf); | |
3746 | return Qnil; | |
3747 | } | |
3748 | ||
cdfb0f1d KH |
3749 | DEFUN ("write-region", Fwrite_region, Swrite_region, 3, 7, |
3750 | "r\nFWrite region to file: \ni\ni\ni\nZCoding system: ", | |
570d7624 JB |
3751 | "Write current region into specified file.\n\ |
3752 | When called from a program, takes three arguments:\n\ | |
3753 | START, END and FILENAME. START and END are buffer positions.\n\ | |
3754 | Optional fourth argument APPEND if non-nil means\n\ | |
3755 | append to existing file contents (if any).\n\ | |
3756 | Optional fifth argument VISIT if t means\n\ | |
3757 | set the last-save-file-modtime of buffer to this file's modtime\n\ | |
3758 | and mark buffer not modified.\n\ | |
3b7792ed RS |
3759 | If VISIT is a string, it is a second file name;\n\ |
3760 | the output goes to FILENAME, but the buffer is marked as visiting VISIT.\n\ | |
3761 | VISIT is also the file name to lock and unlock for clash detection.\n\ | |
1d386d28 RS |
3762 | If VISIT is neither t nor nil nor a string,\n\ |
3763 | that means do not print the \"Wrote file\" message.\n\ | |
7204a979 RS |
3764 | The optional sixth arg LOCKNAME, if non-nil, specifies the name to\n\ |
3765 | use for locking and unlocking, overriding FILENAME and VISIT.\n\ | |
cdfb0f1d KH |
3766 | The optional seventh arg CODING-SYSTEM, if non-nil, specifies the coding\n\ |
3767 | system to be used for encoding characters. For interactive use,\n\ | |
3768 | you can specify it by giving a prefix argument. If no coding system\n\ | |
3769 | is specified, the current region is encoded according to the value of\n\ | |
3770 | `coding-system-for-write' or `coding-system-alist'. The variable\n\ | |
3771 | `last-coding-system-used' is set the coding system actually used.\n\ | |
570d7624 | 3772 | Kludgy feature: if START is a string, then that string is written\n\ |
cdfb0f1d KH |
3773 | to the file, instead of any buffer contents, and END is ignored.") |
3774 | (start, end, filename, append, visit, lockname, coding_system_symbol) | |
7204a979 | 3775 | Lisp_Object start, end, filename, append, visit, lockname; |
cdfb0f1d | 3776 | Lisp_Object coding_system_symbol; |
570d7624 JB |
3777 | { |
3778 | register int desc; | |
3779 | int failure; | |
3780 | int save_errno; | |
3781 | unsigned char *fn; | |
3782 | struct stat st; | |
c975dd7a | 3783 | int tem; |
570d7624 | 3784 | int count = specpdl_ptr - specpdl; |
6fc6f94b | 3785 | int count1; |
570d7624 | 3786 | #ifdef VMS |
5e570b75 | 3787 | unsigned char *fname = 0; /* If non-0, original filename (must rename) */ |
570d7624 | 3788 | #endif /* VMS */ |
3eac9910 | 3789 | Lisp_Object handler; |
4ad827c5 | 3790 | Lisp_Object visit_file; |
d6a3cc15 RS |
3791 | Lisp_Object annotations; |
3792 | int visiting, quietly; | |
7204a979 | 3793 | struct gcpro gcpro1, gcpro2, gcpro3, gcpro4, gcpro5; |
6fc6f94b | 3794 | struct buffer *given_buffer; |
5e570b75 | 3795 | #ifdef DOS_NT |
4c3c22f3 RS |
3796 | int buffer_file_type |
3797 | = NILP (current_buffer->buffer_file_type) ? O_TEXT : O_BINARY; | |
5e570b75 | 3798 | #endif /* DOS_NT */ |
6fdaa9a0 | 3799 | struct coding_system coding; |
570d7624 | 3800 | |
95385625 RS |
3801 | if (current_buffer->base_buffer && ! NILP (visit)) |
3802 | error ("Cannot do file visiting in an indirect buffer"); | |
3803 | ||
561cb8e1 | 3804 | if (!NILP (start) && !STRINGP (start)) |
570d7624 JB |
3805 | validate_region (&start, &end); |
3806 | ||
cdfb0f1d KH |
3807 | GCPRO5 (start, filename, visit, lockname, coding_system_symbol); |
3808 | ||
3809 | /* Decide the coding-system to be encoded to. */ | |
3810 | { | |
3811 | Lisp_Object val; | |
3812 | ||
3813 | if (auto_saving || NILP (current_buffer->enable_multibyte_characters)) | |
3814 | val = Qnil; | |
3815 | else if (!NILP (coding_system_symbol)) | |
3816 | val = coding_system_symbol; | |
3817 | else if (!NILP (Vcoding_system_for_write)) | |
3818 | val = Vcoding_system_for_write; | |
3819 | else if (!NILP (Flocal_variable_if_set_p (Qbuffer_file_coding_system, | |
3820 | Qnil))) | |
3821 | val = Fsymbol_value (Qbuffer_file_coding_system); | |
3822 | else | |
3823 | { | |
3824 | Lisp_Object args[7], coding_systems; | |
3825 | ||
3826 | args[0] = Qwrite_region, args[1] = start, args[2] = end, | |
3827 | args[3] = filename, args[4] = append, args[5] = visit, | |
3828 | args[6] = lockname; | |
3829 | coding_systems = Ffind_coding_system (7, args); | |
3830 | val = (CONSP (coding_systems) | |
3831 | ? XCONS (coding_systems)->cdr | |
3832 | : Fsymbol_value (Qbuffer_file_coding_system)); | |
3833 | } | |
3834 | setup_coding_system (Fcheck_coding_system (val), &coding); | |
3835 | if (!STRINGP (start) && !NILP (current_buffer->selective_display)) | |
3836 | coding.selective = 1; | |
3837 | #ifdef DOS_NT | |
3838 | if (!NILP (current_buffer->buffer_file_type)) | |
3839 | coding.eol_type = CODING_EOL_LF; | |
3840 | #endif /* DOS_NT */ | |
3841 | } | |
3842 | ||
570d7624 | 3843 | filename = Fexpand_file_name (filename, Qnil); |
561cb8e1 | 3844 | if (STRINGP (visit)) |
e5176bae | 3845 | visit_file = Fexpand_file_name (visit, Qnil); |
4ad827c5 RS |
3846 | else |
3847 | visit_file = filename; | |
1a04498e | 3848 | UNGCPRO; |
4ad827c5 | 3849 | |
561cb8e1 | 3850 | visiting = (EQ (visit, Qt) || STRINGP (visit)); |
d6a3cc15 RS |
3851 | quietly = !NILP (visit); |
3852 | ||
3853 | annotations = Qnil; | |
3854 | ||
7204a979 RS |
3855 | if (NILP (lockname)) |
3856 | lockname = visit_file; | |
3857 | ||
3858 | GCPRO5 (start, filename, annotations, visit_file, lockname); | |
570d7624 | 3859 | |
32f4334d RS |
3860 | /* If the file name has special constructs in it, |
3861 | call the corresponding file handler. */ | |
49307295 | 3862 | handler = Ffind_file_name_handler (filename, Qwrite_region); |
b56ad927 | 3863 | /* If FILENAME has no handler, see if VISIT has one. */ |
93c30b5f | 3864 | if (NILP (handler) && STRINGP (visit)) |
199607e4 | 3865 | handler = Ffind_file_name_handler (visit, Qwrite_region); |
3eac9910 | 3866 | |
32f4334d RS |
3867 | if (!NILP (handler)) |
3868 | { | |
32f4334d | 3869 | Lisp_Object val; |
51cf6d37 RS |
3870 | val = call6 (handler, Qwrite_region, start, end, |
3871 | filename, append, visit); | |
32f4334d | 3872 | |
d6a3cc15 | 3873 | if (visiting) |
32f4334d | 3874 | { |
95385625 | 3875 | SAVE_MODIFF = MODIFF; |
2acfd7ae | 3876 | XSETFASTINT (current_buffer->save_length, Z - BEG); |
3b7792ed | 3877 | current_buffer->filename = visit_file; |
32f4334d | 3878 | } |
09121adc | 3879 | UNGCPRO; |
32f4334d RS |
3880 | return val; |
3881 | } | |
3882 | ||
561cb8e1 RS |
3883 | /* Special kludge to simplify auto-saving. */ |
3884 | if (NILP (start)) | |
3885 | { | |
2acfd7ae KH |
3886 | XSETFASTINT (start, BEG); |
3887 | XSETFASTINT (end, Z); | |
561cb8e1 RS |
3888 | } |
3889 | ||
6fc6f94b RS |
3890 | record_unwind_protect (build_annotations_unwind, Fcurrent_buffer ()); |
3891 | count1 = specpdl_ptr - specpdl; | |
3892 | ||
3893 | given_buffer = current_buffer; | |
6fdaa9a0 | 3894 | annotations = build_annotations (start, end, coding.pre_write_conversion); |
6fc6f94b RS |
3895 | if (current_buffer != given_buffer) |
3896 | { | |
3897 | start = BEGV; | |
3898 | end = ZV; | |
3899 | } | |
d6a3cc15 | 3900 | |
570d7624 JB |
3901 | #ifdef CLASH_DETECTION |
3902 | if (!auto_saving) | |
84f6296a RS |
3903 | { |
3904 | /* If we've locked this file for some other buffer, | |
3905 | query before proceeding. */ | |
3906 | if (!visiting && EQ (Ffile_locked_p (lockname), Qt)) | |
3907 | call2 (intern ("ask-user-about-lock"), fn, Vuser_login_name); | |
3908 | ||
3909 | lock_file (lockname); | |
3910 | } | |
570d7624 JB |
3911 | #endif /* CLASH_DETECTION */ |
3912 | ||
09121adc | 3913 | fn = XSTRING (filename)->data; |
570d7624 | 3914 | desc = -1; |
265a9e55 | 3915 | if (!NILP (append)) |
5e570b75 | 3916 | #ifdef DOS_NT |
4c3c22f3 | 3917 | desc = open (fn, O_WRONLY | buffer_file_type); |
5e570b75 | 3918 | #else /* not DOS_NT */ |
570d7624 | 3919 | desc = open (fn, O_WRONLY); |
5e570b75 | 3920 | #endif /* not DOS_NT */ |
570d7624 | 3921 | |
ef429633 | 3922 | if (desc < 0 && (NILP (append) || errno == ENOENT) ) |
570d7624 | 3923 | #ifdef VMS |
5e570b75 | 3924 | if (auto_saving) /* Overwrite any previous version of autosave file */ |
570d7624 | 3925 | { |
5e570b75 | 3926 | vms_truncate (fn); /* if fn exists, truncate to zero length */ |
570d7624 JB |
3927 | desc = open (fn, O_RDWR); |
3928 | if (desc < 0) | |
561cb8e1 | 3929 | desc = creat_copy_attrs (STRINGP (current_buffer->filename) |
b72dea2a JB |
3930 | ? XSTRING (current_buffer->filename)->data : 0, |
3931 | fn); | |
570d7624 | 3932 | } |
5e570b75 | 3933 | else /* Write to temporary name and rename if no errors */ |
570d7624 JB |
3934 | { |
3935 | Lisp_Object temp_name; | |
3936 | temp_name = Ffile_name_directory (filename); | |
3937 | ||
265a9e55 | 3938 | if (!NILP (temp_name)) |
570d7624 JB |
3939 | { |
3940 | temp_name = Fmake_temp_name (concat2 (temp_name, | |
3941 | build_string ("$$SAVE$$"))); | |
3942 | fname = XSTRING (filename)->data; | |
3943 | fn = XSTRING (temp_name)->data; | |
3944 | desc = creat_copy_attrs (fname, fn); | |
3945 | if (desc < 0) | |
3946 | { | |
3947 | /* If we can't open the temporary file, try creating a new | |
3948 | version of the original file. VMS "creat" creates a | |
3949 | new version rather than truncating an existing file. */ | |
3950 | fn = fname; | |
3951 | fname = 0; | |
3952 | desc = creat (fn, 0666); | |
3953 | #if 0 /* This can clobber an existing file and fail to replace it, | |
3954 | if the user runs out of space. */ | |
3955 | if (desc < 0) | |
3956 | { | |
3957 | /* We can't make a new version; | |
3958 | try to truncate and rewrite existing version if any. */ | |
3959 | vms_truncate (fn); | |
3960 | desc = open (fn, O_RDWR); | |
3961 | } | |
3962 | #endif | |
3963 | } | |
3964 | } | |
3965 | else | |
3966 | desc = creat (fn, 0666); | |
3967 | } | |
3968 | #else /* not VMS */ | |
5e570b75 | 3969 | #ifdef DOS_NT |
199607e4 RS |
3970 | desc = open (fn, |
3971 | O_WRONLY | O_TRUNC | O_CREAT | buffer_file_type, | |
4c3c22f3 | 3972 | S_IREAD | S_IWRITE); |
5e570b75 | 3973 | #else /* not DOS_NT */ |
570d7624 | 3974 | desc = creat (fn, auto_saving ? auto_save_mode_bits : 0666); |
5e570b75 | 3975 | #endif /* not DOS_NT */ |
570d7624 JB |
3976 | #endif /* not VMS */ |
3977 | ||
09121adc RS |
3978 | UNGCPRO; |
3979 | ||
570d7624 JB |
3980 | if (desc < 0) |
3981 | { | |
3982 | #ifdef CLASH_DETECTION | |
3983 | save_errno = errno; | |
7204a979 | 3984 | if (!auto_saving) unlock_file (lockname); |
570d7624 JB |
3985 | errno = save_errno; |
3986 | #endif /* CLASH_DETECTION */ | |
3987 | report_file_error ("Opening output file", Fcons (filename, Qnil)); | |
3988 | } | |
3989 | ||
3990 | record_unwind_protect (close_file_unwind, make_number (desc)); | |
3991 | ||
265a9e55 | 3992 | if (!NILP (append)) |
570d7624 JB |
3993 | if (lseek (desc, 0, 2) < 0) |
3994 | { | |
3995 | #ifdef CLASH_DETECTION | |
7204a979 | 3996 | if (!auto_saving) unlock_file (lockname); |
570d7624 JB |
3997 | #endif /* CLASH_DETECTION */ |
3998 | report_file_error ("Lseek error", Fcons (filename, Qnil)); | |
3999 | } | |
4000 | ||
4001 | #ifdef VMS | |
4002 | /* | |
4003 | * Kludge Warning: The VMS C RTL likes to insert carriage returns | |
4004 | * if we do writes that don't end with a carriage return. Furthermore | |
4005 | * it cannot handle writes of more then 16K. The modified | |
4006 | * version of "sys_write" in SYSDEP.C (see comment there) copes with | |
4007 | * this EXCEPT for the last record (iff it doesn't end with a carriage | |
4008 | * return). This implies that if your buffer doesn't end with a carriage | |
4009 | * return, you get one free... tough. However it also means that if | |
4010 | * we make two calls to sys_write (a la the following code) you can | |
4011 | * get one at the gap as well. The easiest way to fix this (honest) | |
4012 | * is to move the gap to the next newline (or the end of the buffer). | |
4013 | * Thus this change. | |
4014 | * | |
4015 | * Yech! | |
4016 | */ | |
4017 | if (GPT > BEG && GPT_ADDR[-1] != '\n') | |
4018 | move_gap (find_next_newline (GPT, 1)); | |
cdfb0f1d KH |
4019 | #else |
4020 | /* Whether VMS or not, we must move the gap to the next of newline | |
4021 | when we must put designation sequences at beginning of line. */ | |
4022 | if (INTEGERP (start) | |
4023 | && coding.type == coding_type_iso2022 | |
4024 | && coding.flags & CODING_FLAG_ISO_DESIGNATE_AT_BOL | |
4025 | && GPT > BEG && GPT_ADDR[-1] != '\n') | |
4026 | move_gap (find_next_newline (GPT, 1)); | |
570d7624 JB |
4027 | #endif |
4028 | ||
4029 | failure = 0; | |
4030 | immediate_quit = 1; | |
4031 | ||
561cb8e1 | 4032 | if (STRINGP (start)) |
570d7624 | 4033 | { |
d6a3cc15 | 4034 | failure = 0 > a_write (desc, XSTRING (start)->data, |
6fdaa9a0 | 4035 | XSTRING (start)->size, 0, &annotations, &coding); |
570d7624 JB |
4036 | save_errno = errno; |
4037 | } | |
4038 | else if (XINT (start) != XINT (end)) | |
4039 | { | |
c975dd7a | 4040 | int nwritten = 0; |
570d7624 JB |
4041 | if (XINT (start) < GPT) |
4042 | { | |
4043 | register int end1 = XINT (end); | |
4044 | tem = XINT (start); | |
6fdaa9a0 KH |
4045 | failure = 0 > a_write (desc, POS_ADDR (tem), |
4046 | min (GPT, end1) - tem, tem, &annotations, | |
4047 | &coding); | |
c975dd7a | 4048 | nwritten += min (GPT, end1) - tem; |
570d7624 JB |
4049 | save_errno = errno; |
4050 | } | |
4051 | ||
4052 | if (XINT (end) > GPT && !failure) | |
4053 | { | |
4054 | tem = XINT (start); | |
4055 | tem = max (tem, GPT); | |
6fdaa9a0 KH |
4056 | failure = 0 > a_write (desc, POS_ADDR (tem), XINT (end) - tem, |
4057 | tem, &annotations, &coding); | |
c975dd7a | 4058 | nwritten += XINT (end) - tem; |
d6a3cc15 RS |
4059 | save_errno = errno; |
4060 | } | |
69f6e679 RS |
4061 | } |
4062 | else | |
4063 | { | |
4064 | /* If file was empty, still need to write the annotations */ | |
cdfb0f1d | 4065 | coding.last_block = 1; |
6fdaa9a0 KH |
4066 | failure = 0 > a_write (desc, "", 0, XINT (start), &annotations, &coding); |
4067 | save_errno = errno; | |
4068 | } | |
4069 | ||
4070 | if (coding.require_flushing) | |
4071 | { | |
4072 | /* We have to flush out a data. */ | |
4073 | coding.last_block = 1; | |
4074 | failure = 0 > e_write (desc, "", 0, &coding); | |
69f6e679 | 4075 | save_errno = errno; |
570d7624 JB |
4076 | } |
4077 | ||
4078 | immediate_quit = 0; | |
4079 | ||
6e23c83e | 4080 | #ifdef HAVE_FSYNC |
570d7624 JB |
4081 | /* Note fsync appears to change the modtime on BSD4.2 (both vax and sun). |
4082 | Disk full in NFS may be reported here. */ | |
1daffa1c RS |
4083 | /* mib says that closing the file will try to write as fast as NFS can do |
4084 | it, and that means the fsync here is not crucial for autosave files. */ | |
4085 | if (!auto_saving && fsync (desc) < 0) | |
cb33c142 KH |
4086 | { |
4087 | /* If fsync fails with EINTR, don't treat that as serious. */ | |
4088 | if (errno != EINTR) | |
4089 | failure = 1, save_errno = errno; | |
4090 | } | |
570d7624 JB |
4091 | #endif |
4092 | ||
199607e4 | 4093 | /* Spurious "file has changed on disk" warnings have been |
570d7624 JB |
4094 | observed on Suns as well. |
4095 | It seems that `close' can change the modtime, under nfs. | |
4096 | ||
4097 | (This has supposedly been fixed in Sunos 4, | |
4098 | but who knows about all the other machines with NFS?) */ | |
4099 | #if 0 | |
4100 | ||
4101 | /* On VMS and APOLLO, must do the stat after the close | |
4102 | since closing changes the modtime. */ | |
4103 | #ifndef VMS | |
4104 | #ifndef APOLLO | |
4105 | /* Recall that #if defined does not work on VMS. */ | |
4106 | #define FOO | |
4107 | fstat (desc, &st); | |
4108 | #endif | |
4109 | #endif | |
4110 | #endif | |
4111 | ||
4112 | /* NFS can report a write failure now. */ | |
4113 | if (close (desc) < 0) | |
4114 | failure = 1, save_errno = errno; | |
4115 | ||
4116 | #ifdef VMS | |
4117 | /* If we wrote to a temporary name and had no errors, rename to real name. */ | |
4118 | if (fname) | |
4119 | { | |
4120 | if (!failure) | |
4121 | failure = (rename (fn, fname) != 0), save_errno = errno; | |
4122 | fn = fname; | |
4123 | } | |
4124 | #endif /* VMS */ | |
4125 | ||
4126 | #ifndef FOO | |
4127 | stat (fn, &st); | |
4128 | #endif | |
6fc6f94b RS |
4129 | /* Discard the unwind protect for close_file_unwind. */ |
4130 | specpdl_ptr = specpdl + count1; | |
4131 | /* Restore the original current buffer. */ | |
98295b48 | 4132 | visit_file = unbind_to (count, visit_file); |
570d7624 JB |
4133 | |
4134 | #ifdef CLASH_DETECTION | |
4135 | if (!auto_saving) | |
7204a979 | 4136 | unlock_file (lockname); |
570d7624 JB |
4137 | #endif /* CLASH_DETECTION */ |
4138 | ||
4139 | /* Do this before reporting IO error | |
4140 | to avoid a "file has changed on disk" warning on | |
4141 | next attempt to save. */ | |
d6a3cc15 | 4142 | if (visiting) |
570d7624 JB |
4143 | current_buffer->modtime = st.st_mtime; |
4144 | ||
4145 | if (failure) | |
ce97267f | 4146 | error ("IO error writing %s: %s", fn, strerror (save_errno)); |
570d7624 | 4147 | |
d6a3cc15 | 4148 | if (visiting) |
570d7624 | 4149 | { |
95385625 | 4150 | SAVE_MODIFF = MODIFF; |
2acfd7ae | 4151 | XSETFASTINT (current_buffer->save_length, Z - BEG); |
3b7792ed | 4152 | current_buffer->filename = visit_file; |
f4226e89 | 4153 | update_mode_lines++; |
570d7624 | 4154 | } |
d6a3cc15 | 4155 | else if (quietly) |
570d7624 JB |
4156 | return Qnil; |
4157 | ||
4158 | if (!auto_saving) | |
3b7792ed | 4159 | message ("Wrote %s", XSTRING (visit_file)->data); |
570d7624 JB |
4160 | |
4161 | return Qnil; | |
4162 | } | |
4163 | ||
d6a3cc15 RS |
4164 | Lisp_Object merge (); |
4165 | ||
4166 | DEFUN ("car-less-than-car", Fcar_less_than_car, Scar_less_than_car, 2, 2, 0, | |
2ba0ccff | 4167 | "Return t if (car A) is numerically less than (car B).") |
d6a3cc15 RS |
4168 | (a, b) |
4169 | Lisp_Object a, b; | |
4170 | { | |
4171 | return Flss (Fcar (a), Fcar (b)); | |
4172 | } | |
4173 | ||
4174 | /* Build the complete list of annotations appropriate for writing out | |
4175 | the text between START and END, by calling all the functions in | |
6fc6f94b RS |
4176 | write-region-annotate-functions and merging the lists they return. |
4177 | If one of these functions switches to a different buffer, we assume | |
4178 | that buffer contains altered text. Therefore, the caller must | |
4179 | make sure to restore the current buffer in all cases, | |
4180 | as save-excursion would do. */ | |
d6a3cc15 RS |
4181 | |
4182 | static Lisp_Object | |
6fdaa9a0 KH |
4183 | build_annotations (start, end, pre_write_conversion) |
4184 | Lisp_Object start, end, pre_write_conversion; | |
d6a3cc15 RS |
4185 | { |
4186 | Lisp_Object annotations; | |
4187 | Lisp_Object p, res; | |
4188 | struct gcpro gcpro1, gcpro2; | |
0a20b684 RS |
4189 | Lisp_Object original_buffer; |
4190 | ||
4191 | XSETBUFFER (original_buffer, current_buffer); | |
d6a3cc15 RS |
4192 | |
4193 | annotations = Qnil; | |
4194 | p = Vwrite_region_annotate_functions; | |
4195 | GCPRO2 (annotations, p); | |
4196 | while (!NILP (p)) | |
4197 | { | |
6fc6f94b RS |
4198 | struct buffer *given_buffer = current_buffer; |
4199 | Vwrite_region_annotations_so_far = annotations; | |
d6a3cc15 | 4200 | res = call2 (Fcar (p), start, end); |
6fc6f94b RS |
4201 | /* If the function makes a different buffer current, |
4202 | assume that means this buffer contains altered text to be output. | |
4203 | Reset START and END from the buffer bounds | |
4204 | and discard all previous annotations because they should have | |
4205 | been dealt with by this function. */ | |
4206 | if (current_buffer != given_buffer) | |
4207 | { | |
6fc6f94b RS |
4208 | start = BEGV; |
4209 | end = ZV; | |
4210 | annotations = Qnil; | |
4211 | } | |
d6a3cc15 RS |
4212 | Flength (res); /* Check basic validity of return value */ |
4213 | annotations = merge (annotations, res, Qcar_less_than_car); | |
4214 | p = Fcdr (p); | |
4215 | } | |
0d420e88 BG |
4216 | |
4217 | /* Now do the same for annotation functions implied by the file-format */ | |
4218 | if (auto_saving && (!EQ (Vauto_save_file_format, Qt))) | |
4219 | p = Vauto_save_file_format; | |
4220 | else | |
4221 | p = current_buffer->file_format; | |
4222 | while (!NILP (p)) | |
4223 | { | |
4224 | struct buffer *given_buffer = current_buffer; | |
4225 | Vwrite_region_annotations_so_far = annotations; | |
0a20b684 RS |
4226 | res = call4 (Qformat_annotate_function, Fcar (p), start, end, |
4227 | original_buffer); | |
0d420e88 BG |
4228 | if (current_buffer != given_buffer) |
4229 | { | |
4230 | start = BEGV; | |
4231 | end = ZV; | |
4232 | annotations = Qnil; | |
4233 | } | |
4234 | Flength (res); | |
4235 | annotations = merge (annotations, res, Qcar_less_than_car); | |
4236 | p = Fcdr (p); | |
4237 | } | |
6fdaa9a0 KH |
4238 | |
4239 | /* At last, do the same for the function PRE_WRITE_CONVERSION | |
4240 | implied by the current coding-system. */ | |
4241 | if (!NILP (pre_write_conversion)) | |
4242 | { | |
4243 | struct buffer *given_buffer = current_buffer; | |
4244 | Vwrite_region_annotations_so_far = annotations; | |
4245 | res = call2 (pre_write_conversion, start, end); | |
6fdaa9a0 | 4246 | Flength (res); |
cdfb0f1d KH |
4247 | annotations = (current_buffer != given_buffer |
4248 | ? res | |
4249 | : merge (annotations, res, Qcar_less_than_car)); | |
6fdaa9a0 KH |
4250 | } |
4251 | ||
d6a3cc15 RS |
4252 | UNGCPRO; |
4253 | return annotations; | |
4254 | } | |
4255 | ||
4256 | /* Write to descriptor DESC the LEN characters starting at ADDR, | |
4257 | assuming they start at position POS in the buffer. | |
4258 | Intersperse with them the annotations from *ANNOT | |
4259 | (those which fall within the range of positions POS to POS + LEN), | |
4260 | each at its appropriate position. | |
4261 | ||
4262 | Modify *ANNOT by discarding elements as we output them. | |
4263 | The return value is negative in case of system call failure. */ | |
4264 | ||
4265 | int | |
6fdaa9a0 | 4266 | a_write (desc, addr, len, pos, annot, coding) |
d6a3cc15 RS |
4267 | int desc; |
4268 | register char *addr; | |
4269 | register int len; | |
4270 | int pos; | |
4271 | Lisp_Object *annot; | |
6fdaa9a0 | 4272 | struct coding_system *coding; |
d6a3cc15 RS |
4273 | { |
4274 | Lisp_Object tem; | |
4275 | int nextpos; | |
4276 | int lastpos = pos + len; | |
4277 | ||
eb15aa18 | 4278 | while (NILP (*annot) || CONSP (*annot)) |
d6a3cc15 RS |
4279 | { |
4280 | tem = Fcar_safe (Fcar (*annot)); | |
4281 | if (INTEGERP (tem) && XINT (tem) >= pos && XFASTINT (tem) <= lastpos) | |
4282 | nextpos = XFASTINT (tem); | |
4283 | else | |
6fdaa9a0 | 4284 | return e_write (desc, addr, lastpos - pos, coding); |
d6a3cc15 RS |
4285 | if (nextpos > pos) |
4286 | { | |
6fdaa9a0 | 4287 | if (0 > e_write (desc, addr, nextpos - pos, coding)) |
d6a3cc15 RS |
4288 | return -1; |
4289 | addr += nextpos - pos; | |
4290 | pos = nextpos; | |
4291 | } | |
4292 | tem = Fcdr (Fcar (*annot)); | |
4293 | if (STRINGP (tem)) | |
4294 | { | |
6fdaa9a0 KH |
4295 | if (0 > e_write (desc, XSTRING (tem)->data, XSTRING (tem)->size, |
4296 | coding)) | |
d6a3cc15 RS |
4297 | return -1; |
4298 | } | |
4299 | *annot = Fcdr (*annot); | |
4300 | } | |
4301 | } | |
4302 | ||
6fdaa9a0 KH |
4303 | #ifndef WRITE_BUF_SIZE |
4304 | #define WRITE_BUF_SIZE (16 * 1024) | |
4305 | #endif | |
4306 | ||
570d7624 | 4307 | int |
6fdaa9a0 | 4308 | e_write (desc, addr, len, coding) |
570d7624 JB |
4309 | int desc; |
4310 | register char *addr; | |
4311 | register int len; | |
6fdaa9a0 | 4312 | struct coding_system *coding; |
570d7624 | 4313 | { |
6fdaa9a0 KH |
4314 | char buf[WRITE_BUF_SIZE]; |
4315 | int produced, consumed; | |
570d7624 | 4316 | |
6fdaa9a0 KH |
4317 | /* We used to have a code for handling selective display here. But, |
4318 | now it is handled within encode_coding. */ | |
4319 | while (1) | |
570d7624 | 4320 | { |
6fdaa9a0 KH |
4321 | produced = encode_coding (coding, addr, buf, len, WRITE_BUF_SIZE, |
4322 | &consumed); | |
4323 | len -= consumed, addr += consumed; | |
6fdaa9a0 KH |
4324 | if (produced > 0) |
4325 | { | |
4326 | produced -= write (desc, buf, produced); | |
4327 | if (produced) return -1; | |
570d7624 | 4328 | } |
6fdaa9a0 KH |
4329 | if (len <= 0) |
4330 | break; | |
570d7624 JB |
4331 | } |
4332 | return 0; | |
4333 | } | |
4334 | ||
4335 | DEFUN ("verify-visited-file-modtime", Fverify_visited_file_modtime, | |
4336 | Sverify_visited_file_modtime, 1, 1, 0, | |
4337 | "Return t if last mod time of BUF's visited file matches what BUF records.\n\ | |
4338 | This means that the file has not been changed since it was visited or saved.") | |
4339 | (buf) | |
4340 | Lisp_Object buf; | |
4341 | { | |
4342 | struct buffer *b; | |
4343 | struct stat st; | |
32f4334d | 4344 | Lisp_Object handler; |
570d7624 JB |
4345 | |
4346 | CHECK_BUFFER (buf, 0); | |
4347 | b = XBUFFER (buf); | |
4348 | ||
93c30b5f | 4349 | if (!STRINGP (b->filename)) return Qt; |
570d7624 JB |
4350 | if (b->modtime == 0) return Qt; |
4351 | ||
32f4334d RS |
4352 | /* If the file name has special constructs in it, |
4353 | call the corresponding file handler. */ | |
49307295 KH |
4354 | handler = Ffind_file_name_handler (b->filename, |
4355 | Qverify_visited_file_modtime); | |
32f4334d | 4356 | if (!NILP (handler)) |
09121adc | 4357 | return call2 (handler, Qverify_visited_file_modtime, buf); |
32f4334d | 4358 | |
570d7624 JB |
4359 | if (stat (XSTRING (b->filename)->data, &st) < 0) |
4360 | { | |
4361 | /* If the file doesn't exist now and didn't exist before, | |
4362 | we say that it isn't modified, provided the error is a tame one. */ | |
4363 | if (errno == ENOENT || errno == EACCES || errno == ENOTDIR) | |
4364 | st.st_mtime = -1; | |
4365 | else | |
4366 | st.st_mtime = 0; | |
4367 | } | |
4368 | if (st.st_mtime == b->modtime | |
4369 | /* If both are positive, accept them if they are off by one second. */ | |
4370 | || (st.st_mtime > 0 && b->modtime > 0 | |
4371 | && (st.st_mtime == b->modtime + 1 | |
4372 | || st.st_mtime == b->modtime - 1))) | |
4373 | return Qt; | |
4374 | return Qnil; | |
4375 | } | |
4376 | ||
4377 | DEFUN ("clear-visited-file-modtime", Fclear_visited_file_modtime, | |
4378 | Sclear_visited_file_modtime, 0, 0, 0, | |
4379 | "Clear out records of last mod time of visited file.\n\ | |
4380 | Next attempt to save will certainly not complain of a discrepancy.") | |
4381 | () | |
4382 | { | |
4383 | current_buffer->modtime = 0; | |
4384 | return Qnil; | |
4385 | } | |
4386 | ||
f5d5eccf RS |
4387 | DEFUN ("visited-file-modtime", Fvisited_file_modtime, |
4388 | Svisited_file_modtime, 0, 0, 0, | |
4389 | "Return the current buffer's recorded visited file modification time.\n\ | |
4390 | The value is a list of the form (HIGH . LOW), like the time values\n\ | |
4391 | that `file-attributes' returns.") | |
4392 | () | |
4393 | { | |
b50536bb | 4394 | return long_to_cons ((unsigned long) current_buffer->modtime); |
f5d5eccf RS |
4395 | } |
4396 | ||
570d7624 | 4397 | DEFUN ("set-visited-file-modtime", Fset_visited_file_modtime, |
f5d5eccf | 4398 | Sset_visited_file_modtime, 0, 1, 0, |
570d7624 JB |
4399 | "Update buffer's recorded modification time from the visited file's time.\n\ |
4400 | Useful if the buffer was not read from the file normally\n\ | |
f5d5eccf RS |
4401 | or if the file itself has been changed for some known benign reason.\n\ |
4402 | An argument specifies the modification time value to use\n\ | |
4403 | \(instead of that of the visited file), in the form of a list\n\ | |
4404 | \(HIGH . LOW) or (HIGH LOW).") | |
4405 | (time_list) | |
4406 | Lisp_Object time_list; | |
570d7624 | 4407 | { |
f5d5eccf RS |
4408 | if (!NILP (time_list)) |
4409 | current_buffer->modtime = cons_to_long (time_list); | |
4410 | else | |
4411 | { | |
4412 | register Lisp_Object filename; | |
4413 | struct stat st; | |
4414 | Lisp_Object handler; | |
570d7624 | 4415 | |
f5d5eccf | 4416 | filename = Fexpand_file_name (current_buffer->filename, Qnil); |
32f4334d | 4417 | |
f5d5eccf RS |
4418 | /* If the file name has special constructs in it, |
4419 | call the corresponding file handler. */ | |
49307295 | 4420 | handler = Ffind_file_name_handler (filename, Qset_visited_file_modtime); |
f5d5eccf | 4421 | if (!NILP (handler)) |
caf3c431 | 4422 | /* The handler can find the file name the same way we did. */ |
76c881b0 | 4423 | return call2 (handler, Qset_visited_file_modtime, Qnil); |
f5d5eccf RS |
4424 | else if (stat (XSTRING (filename)->data, &st) >= 0) |
4425 | current_buffer->modtime = st.st_mtime; | |
4426 | } | |
570d7624 JB |
4427 | |
4428 | return Qnil; | |
4429 | } | |
4430 | \f | |
4431 | Lisp_Object | |
4432 | auto_save_error () | |
4433 | { | |
570d7624 | 4434 | ring_bell (); |
1a04498e | 4435 | message ("Autosaving...error for %s", XSTRING (current_buffer->name)->data); |
de49a6d3 | 4436 | Fsleep_for (make_number (1), Qnil); |
1a04498e | 4437 | message ("Autosaving...error!for %s", XSTRING (current_buffer->name)->data); |
de49a6d3 | 4438 | Fsleep_for (make_number (1), Qnil); |
1a04498e | 4439 | message ("Autosaving...error for %s", XSTRING (current_buffer->name)->data); |
de49a6d3 | 4440 | Fsleep_for (make_number (1), Qnil); |
570d7624 JB |
4441 | return Qnil; |
4442 | } | |
4443 | ||
4444 | Lisp_Object | |
4445 | auto_save_1 () | |
4446 | { | |
4447 | unsigned char *fn; | |
4448 | struct stat st; | |
4449 | ||
4450 | /* Get visited file's mode to become the auto save file's mode. */ | |
4451 | if (stat (XSTRING (current_buffer->filename)->data, &st) >= 0) | |
4452 | /* But make sure we can overwrite it later! */ | |
4453 | auto_save_mode_bits = st.st_mode | 0600; | |
4454 | else | |
4455 | auto_save_mode_bits = 0666; | |
4456 | ||
4457 | return | |
4458 | Fwrite_region (Qnil, Qnil, | |
4459 | current_buffer->auto_save_file_name, | |
cdfb0f1d | 4460 | Qnil, Qlambda, Qnil, Qnil); |
570d7624 JB |
4461 | } |
4462 | ||
e54d3b5d | 4463 | static Lisp_Object |
15fa1468 RS |
4464 | do_auto_save_unwind (desc) /* used as unwind-protect function */ |
4465 | Lisp_Object desc; | |
e54d3b5d | 4466 | { |
3be3c08e | 4467 | auto_saving = 0; |
5badd6a0 KH |
4468 | if (XINT (desc) >= 0) |
4469 | close (XINT (desc)); | |
e54d3b5d RS |
4470 | return Qnil; |
4471 | } | |
4472 | ||
570d7624 JB |
4473 | DEFUN ("do-auto-save", Fdo_auto_save, Sdo_auto_save, 0, 2, "", |
4474 | "Auto-save all buffers that need it.\n\ | |
4475 | This is all buffers that have auto-saving enabled\n\ | |
4476 | and are changed since last auto-saved.\n\ | |
4477 | Auto-saving writes the buffer into a file\n\ | |
4478 | so that your editing is not lost if the system crashes.\n\ | |
012d4cdc RS |
4479 | This file is not the file you visited; that changes only when you save.\n\ |
4480 | Normally we run the normal hook `auto-save-hook' before saving.\n\n\ | |
3b7f6e60 EN |
4481 | A non-nil NO-MESSAGE argument means do not print any message if successful.\n\ |
4482 | A non-nil CURRENT-ONLY argument means save only current buffer.") | |
17857782 JB |
4483 | (no_message, current_only) |
4484 | Lisp_Object no_message, current_only; | |
570d7624 JB |
4485 | { |
4486 | struct buffer *old = current_buffer, *b; | |
4487 | Lisp_Object tail, buf; | |
4488 | int auto_saved = 0; | |
4489 | char *omessage = echo_area_glyphs; | |
f05b275b | 4490 | int omessage_length = echo_area_glyphs_length; |
f14b1c68 | 4491 | int do_handled_files; |
ff4c9993 | 4492 | Lisp_Object oquit; |
e54d3b5d | 4493 | int listdesc; |
e54d3b5d RS |
4494 | int count = specpdl_ptr - specpdl; |
4495 | int *ptr; | |
ff4c9993 RS |
4496 | |
4497 | /* Ordinarily don't quit within this function, | |
4498 | but don't make it impossible to quit (in case we get hung in I/O). */ | |
4499 | oquit = Vquit_flag; | |
4500 | Vquit_flag = Qnil; | |
570d7624 JB |
4501 | |
4502 | /* No GCPRO needed, because (when it matters) all Lisp_Object variables | |
4503 | point to non-strings reached from Vbuffer_alist. */ | |
4504 | ||
570d7624 | 4505 | if (minibuf_level) |
17857782 | 4506 | no_message = Qt; |
570d7624 | 4507 | |
265a9e55 | 4508 | if (!NILP (Vrun_hooks)) |
570d7624 JB |
4509 | call1 (Vrun_hooks, intern ("auto-save-hook")); |
4510 | ||
e54d3b5d RS |
4511 | if (STRINGP (Vauto_save_list_file_name)) |
4512 | { | |
258fd2cb RS |
4513 | Lisp_Object listfile; |
4514 | listfile = Fexpand_file_name (Vauto_save_list_file_name, Qnil); | |
5e570b75 | 4515 | #ifdef DOS_NT |
199607e4 | 4516 | listdesc = open (XSTRING (listfile)->data, |
e54d3b5d RS |
4517 | O_WRONLY | O_TRUNC | O_CREAT | O_TEXT, |
4518 | S_IREAD | S_IWRITE); | |
5e570b75 | 4519 | #else /* not DOS_NT */ |
258fd2cb | 4520 | listdesc = creat (XSTRING (listfile)->data, 0666); |
5e570b75 | 4521 | #endif /* not DOS_NT */ |
e54d3b5d RS |
4522 | } |
4523 | else | |
4524 | listdesc = -1; | |
199607e4 | 4525 | |
3be3c08e RS |
4526 | /* Arrange to close that file whether or not we get an error. |
4527 | Also reset auto_saving to 0. */ | |
5badd6a0 | 4528 | record_unwind_protect (do_auto_save_unwind, make_number (listdesc)); |
e54d3b5d | 4529 | |
3be3c08e RS |
4530 | auto_saving = 1; |
4531 | ||
f14b1c68 JB |
4532 | /* First, save all files which don't have handlers. If Emacs is |
4533 | crashing, the handlers may tweak what is causing Emacs to crash | |
4534 | in the first place, and it would be a shame if Emacs failed to | |
4535 | autosave perfectly ordinary files because it couldn't handle some | |
4536 | ange-ftp'd file. */ | |
4537 | for (do_handled_files = 0; do_handled_files < 2; do_handled_files++) | |
41d86b13 | 4538 | for (tail = Vbuffer_alist; GC_CONSP (tail); tail = XCONS (tail)->cdr) |
f14b1c68 JB |
4539 | { |
4540 | buf = XCONS (XCONS (tail)->car)->cdr; | |
4541 | b = XBUFFER (buf); | |
199607e4 | 4542 | |
e54d3b5d | 4543 | /* Record all the buffers that have auto save mode |
258fd2cb RS |
4544 | in the special file that lists them. For each of these buffers, |
4545 | Record visited name (if any) and auto save name. */ | |
93c30b5f | 4546 | if (STRINGP (b->auto_save_file_name) |
e54d3b5d RS |
4547 | && listdesc >= 0 && do_handled_files == 0) |
4548 | { | |
258fd2cb RS |
4549 | if (!NILP (b->filename)) |
4550 | { | |
4551 | write (listdesc, XSTRING (b->filename)->data, | |
4552 | XSTRING (b->filename)->size); | |
4553 | } | |
4554 | write (listdesc, "\n", 1); | |
e54d3b5d RS |
4555 | write (listdesc, XSTRING (b->auto_save_file_name)->data, |
4556 | XSTRING (b->auto_save_file_name)->size); | |
4557 | write (listdesc, "\n", 1); | |
4558 | } | |
17857782 | 4559 | |
f14b1c68 JB |
4560 | if (!NILP (current_only) |
4561 | && b != current_buffer) | |
4562 | continue; | |
e54d3b5d | 4563 | |
95385625 RS |
4564 | /* Don't auto-save indirect buffers. |
4565 | The base buffer takes care of it. */ | |
4566 | if (b->base_buffer) | |
4567 | continue; | |
4568 | ||
f14b1c68 JB |
4569 | /* Check for auto save enabled |
4570 | and file changed since last auto save | |
4571 | and file changed since last real save. */ | |
93c30b5f | 4572 | if (STRINGP (b->auto_save_file_name) |
95385625 | 4573 | && BUF_SAVE_MODIFF (b) < BUF_MODIFF (b) |
f14b1c68 | 4574 | && b->auto_save_modified < BUF_MODIFF (b) |
82c2d839 RS |
4575 | /* -1 means we've turned off autosaving for a while--see below. */ |
4576 | && XINT (b->save_length) >= 0 | |
f14b1c68 | 4577 | && (do_handled_files |
49307295 KH |
4578 | || NILP (Ffind_file_name_handler (b->auto_save_file_name, |
4579 | Qwrite_region)))) | |
f14b1c68 | 4580 | { |
b60247d9 RS |
4581 | EMACS_TIME before_time, after_time; |
4582 | ||
4583 | EMACS_GET_TIME (before_time); | |
4584 | ||
4585 | /* If we had a failure, don't try again for 20 minutes. */ | |
4586 | if (b->auto_save_failure_time >= 0 | |
4587 | && EMACS_SECS (before_time) - b->auto_save_failure_time < 1200) | |
4588 | continue; | |
4589 | ||
f14b1c68 JB |
4590 | if ((XFASTINT (b->save_length) * 10 |
4591 | > (BUF_Z (b) - BUF_BEG (b)) * 13) | |
4592 | /* A short file is likely to change a large fraction; | |
4593 | spare the user annoying messages. */ | |
4594 | && XFASTINT (b->save_length) > 5000 | |
4595 | /* These messages are frequent and annoying for `*mail*'. */ | |
4596 | && !EQ (b->filename, Qnil) | |
4597 | && NILP (no_message)) | |
4598 | { | |
4599 | /* It has shrunk too much; turn off auto-saving here. */ | |
4600 | message ("Buffer %s has shrunk a lot; auto save turned off there", | |
4601 | XSTRING (b->name)->data); | |
82c2d839 RS |
4602 | /* Turn off auto-saving until there's a real save, |
4603 | and prevent any more warnings. */ | |
46283abe | 4604 | XSETINT (b->save_length, -1); |
f14b1c68 JB |
4605 | Fsleep_for (make_number (1), Qnil); |
4606 | continue; | |
4607 | } | |
4608 | set_buffer_internal (b); | |
4609 | if (!auto_saved && NILP (no_message)) | |
4610 | message1 ("Auto-saving..."); | |
4611 | internal_condition_case (auto_save_1, Qt, auto_save_error); | |
4612 | auto_saved++; | |
4613 | b->auto_save_modified = BUF_MODIFF (b); | |
2acfd7ae | 4614 | XSETFASTINT (current_buffer->save_length, Z - BEG); |
f14b1c68 | 4615 | set_buffer_internal (old); |
b60247d9 RS |
4616 | |
4617 | EMACS_GET_TIME (after_time); | |
4618 | ||
4619 | /* If auto-save took more than 60 seconds, | |
4620 | assume it was an NFS failure that got a timeout. */ | |
4621 | if (EMACS_SECS (after_time) - EMACS_SECS (before_time) > 60) | |
4622 | b->auto_save_failure_time = EMACS_SECS (after_time); | |
f14b1c68 JB |
4623 | } |
4624 | } | |
570d7624 | 4625 | |
b67f2ca5 RS |
4626 | /* Prevent another auto save till enough input events come in. */ |
4627 | record_auto_save (); | |
570d7624 | 4628 | |
17857782 | 4629 | if (auto_saved && NILP (no_message)) |
f05b275b KH |
4630 | { |
4631 | if (omessage) | |
31f3d831 KH |
4632 | { |
4633 | sit_for (1, 0, 0, 0); | |
4634 | message2 (omessage, omessage_length); | |
4635 | } | |
f05b275b KH |
4636 | else |
4637 | message1 ("Auto-saving...done"); | |
4638 | } | |
570d7624 | 4639 | |
ff4c9993 RS |
4640 | Vquit_flag = oquit; |
4641 | ||
e54d3b5d | 4642 | unbind_to (count, Qnil); |
570d7624 JB |
4643 | return Qnil; |
4644 | } | |
4645 | ||
4646 | DEFUN ("set-buffer-auto-saved", Fset_buffer_auto_saved, | |
4647 | Sset_buffer_auto_saved, 0, 0, 0, | |
4648 | "Mark current buffer as auto-saved with its current text.\n\ | |
4649 | No auto-save file will be written until the buffer changes again.") | |
4650 | () | |
4651 | { | |
4652 | current_buffer->auto_save_modified = MODIFF; | |
2acfd7ae | 4653 | XSETFASTINT (current_buffer->save_length, Z - BEG); |
b60247d9 RS |
4654 | current_buffer->auto_save_failure_time = -1; |
4655 | return Qnil; | |
4656 | } | |
4657 | ||
4658 | DEFUN ("clear-buffer-auto-save-failure", Fclear_buffer_auto_save_failure, | |
4659 | Sclear_buffer_auto_save_failure, 0, 0, 0, | |
4660 | "Clear any record of a recent auto-save failure in the current buffer.") | |
4661 | () | |
4662 | { | |
4663 | current_buffer->auto_save_failure_time = -1; | |
570d7624 JB |
4664 | return Qnil; |
4665 | } | |
4666 | ||
4667 | DEFUN ("recent-auto-save-p", Frecent_auto_save_p, Srecent_auto_save_p, | |
4668 | 0, 0, 0, | |
4669 | "Return t if buffer has been auto-saved since last read in or saved.") | |
4670 | () | |
4671 | { | |
95385625 | 4672 | return (SAVE_MODIFF < current_buffer->auto_save_modified) ? Qt : Qnil; |
570d7624 JB |
4673 | } |
4674 | \f | |
4675 | /* Reading and completing file names */ | |
4676 | extern Lisp_Object Ffile_name_completion (), Ffile_name_all_completions (); | |
4677 | ||
6e710ae5 RS |
4678 | /* In the string VAL, change each $ to $$ and return the result. */ |
4679 | ||
4680 | static Lisp_Object | |
4681 | double_dollars (val) | |
4682 | Lisp_Object val; | |
4683 | { | |
4684 | register unsigned char *old, *new; | |
4685 | register int n; | |
4686 | int osize, count; | |
4687 | ||
4688 | osize = XSTRING (val)->size; | |
4689 | /* Quote "$" as "$$" to get it past substitute-in-file-name */ | |
4690 | for (n = osize, count = 0, old = XSTRING (val)->data; n > 0; n--) | |
4691 | if (*old++ == '$') count++; | |
4692 | if (count > 0) | |
4693 | { | |
4694 | old = XSTRING (val)->data; | |
4695 | val = Fmake_string (make_number (osize + count), make_number (0)); | |
4696 | new = XSTRING (val)->data; | |
4697 | for (n = osize; n > 0; n--) | |
4698 | if (*old != '$') | |
4699 | *new++ = *old++; | |
4700 | else | |
4701 | { | |
4702 | *new++ = '$'; | |
4703 | *new++ = '$'; | |
4704 | old++; | |
4705 | } | |
4706 | } | |
4707 | return val; | |
4708 | } | |
4709 | ||
570d7624 JB |
4710 | DEFUN ("read-file-name-internal", Fread_file_name_internal, Sread_file_name_internal, |
4711 | 3, 3, 0, | |
4712 | "Internal subroutine for read-file-name. Do not call this.") | |
4713 | (string, dir, action) | |
4714 | Lisp_Object string, dir, action; | |
4715 | /* action is nil for complete, t for return list of completions, | |
4716 | lambda for verify final value */ | |
4717 | { | |
4718 | Lisp_Object name, specdir, realdir, val, orig_string; | |
09121adc | 4719 | int changed; |
8ce069f5 | 4720 | struct gcpro gcpro1, gcpro2, gcpro3, gcpro4, gcpro5; |
09121adc | 4721 | |
58cc3710 RS |
4722 | CHECK_STRING (string, 0); |
4723 | ||
09121adc RS |
4724 | realdir = dir; |
4725 | name = string; | |
4726 | orig_string = Qnil; | |
4727 | specdir = Qnil; | |
4728 | changed = 0; | |
4729 | /* No need to protect ACTION--we only compare it with t and nil. */ | |
8ce069f5 | 4730 | GCPRO5 (string, realdir, name, specdir, orig_string); |
570d7624 JB |
4731 | |
4732 | if (XSTRING (string)->size == 0) | |
4733 | { | |
570d7624 | 4734 | if (EQ (action, Qlambda)) |
09121adc RS |
4735 | { |
4736 | UNGCPRO; | |
4737 | return Qnil; | |
4738 | } | |
570d7624 JB |
4739 | } |
4740 | else | |
4741 | { | |
4742 | orig_string = string; | |
4743 | string = Fsubstitute_in_file_name (string); | |
09121adc | 4744 | changed = NILP (Fstring_equal (string, orig_string)); |
570d7624 | 4745 | name = Ffile_name_nondirectory (string); |
09121adc RS |
4746 | val = Ffile_name_directory (string); |
4747 | if (! NILP (val)) | |
4748 | realdir = Fexpand_file_name (val, realdir); | |
570d7624 JB |
4749 | } |
4750 | ||
265a9e55 | 4751 | if (NILP (action)) |
570d7624 JB |
4752 | { |
4753 | specdir = Ffile_name_directory (string); | |
4754 | val = Ffile_name_completion (name, realdir); | |
09121adc | 4755 | UNGCPRO; |
93c30b5f | 4756 | if (!STRINGP (val)) |
570d7624 | 4757 | { |
09121adc | 4758 | if (changed) |
dbd04e01 | 4759 | return double_dollars (string); |
09121adc | 4760 | return val; |
570d7624 JB |
4761 | } |
4762 | ||
265a9e55 | 4763 | if (!NILP (specdir)) |
570d7624 JB |
4764 | val = concat2 (specdir, val); |
4765 | #ifndef VMS | |
6e710ae5 RS |
4766 | return double_dollars (val); |
4767 | #else /* not VMS */ | |
09121adc | 4768 | return val; |
6e710ae5 | 4769 | #endif /* not VMS */ |
570d7624 | 4770 | } |
09121adc | 4771 | UNGCPRO; |
570d7624 JB |
4772 | |
4773 | if (EQ (action, Qt)) | |
4774 | return Ffile_name_all_completions (name, realdir); | |
4775 | /* Only other case actually used is ACTION = lambda */ | |
4776 | #ifdef VMS | |
4777 | /* Supposedly this helps commands such as `cd' that read directory names, | |
4778 | but can someone explain how it helps them? -- RMS */ | |
4779 | if (XSTRING (name)->size == 0) | |
4780 | return Qt; | |
4781 | #endif /* VMS */ | |
4782 | return Ffile_exists_p (string); | |
4783 | } | |
4784 | ||
4785 | DEFUN ("read-file-name", Fread_file_name, Sread_file_name, 1, 5, 0, | |
4786 | "Read file name, prompting with PROMPT and completing in directory DIR.\n\ | |
4787 | Value is not expanded---you must call `expand-file-name' yourself.\n\ | |
3b7f6e60 EN |
4788 | Default name to DEFAULT-FILENAME if user enters a null string.\n\ |
4789 | (If DEFAULT-FILENAME is omitted, the visited file name is used,\n\ | |
3beeedfe | 4790 | except that if INITIAL is specified, that combined with DIR is used.)\n\ |
570d7624 JB |
4791 | Fourth arg MUSTMATCH non-nil means require existing file's name.\n\ |
4792 | Non-nil and non-t means also require confirmation after completion.\n\ | |
4793 | Fifth arg INITIAL specifies text to start with.\n\ | |
4794 | DIR defaults to current buffer's directory default.") | |
3b7f6e60 EN |
4795 | (prompt, dir, default_filename, mustmatch, initial) |
4796 | Lisp_Object prompt, dir, default_filename, mustmatch, initial; | |
570d7624 | 4797 | { |
85b5fe07 | 4798 | Lisp_Object val, insdef, insdef1, tem; |
570d7624 JB |
4799 | struct gcpro gcpro1, gcpro2; |
4800 | register char *homedir; | |
4801 | int count; | |
4802 | ||
265a9e55 | 4803 | if (NILP (dir)) |
570d7624 | 4804 | dir = current_buffer->directory; |
3b7f6e60 | 4805 | if (NILP (default_filename)) |
3beeedfe RS |
4806 | { |
4807 | if (! NILP (initial)) | |
3b7f6e60 | 4808 | default_filename = Fexpand_file_name (initial, dir); |
3beeedfe | 4809 | else |
3b7f6e60 | 4810 | default_filename = current_buffer->filename; |
3beeedfe | 4811 | } |
570d7624 JB |
4812 | |
4813 | /* If dir starts with user's homedir, change that to ~. */ | |
4814 | homedir = (char *) egetenv ("HOME"); | |
199607e4 RS |
4815 | #ifdef DOS_NT |
4816 | homedir = strcpy (alloca (strlen (homedir) + 1), homedir); | |
4817 | CORRECT_DIR_SEPS (homedir); | |
4818 | #endif | |
570d7624 | 4819 | if (homedir != 0 |
93c30b5f | 4820 | && STRINGP (dir) |
570d7624 | 4821 | && !strncmp (homedir, XSTRING (dir)->data, strlen (homedir)) |
5e570b75 | 4822 | && IS_DIRECTORY_SEP (XSTRING (dir)->data[strlen (homedir)])) |
570d7624 JB |
4823 | { |
4824 | dir = make_string (XSTRING (dir)->data + strlen (homedir) - 1, | |
4825 | XSTRING (dir)->size - strlen (homedir) + 1); | |
4826 | XSTRING (dir)->data[0] = '~'; | |
4827 | } | |
4828 | ||
58cc3710 | 4829 | if (insert_default_directory && STRINGP (dir)) |
570d7624 JB |
4830 | { |
4831 | insdef = dir; | |
265a9e55 | 4832 | if (!NILP (initial)) |
570d7624 | 4833 | { |
15c65264 | 4834 | Lisp_Object args[2], pos; |
570d7624 JB |
4835 | |
4836 | args[0] = insdef; | |
4837 | args[1] = initial; | |
4838 | insdef = Fconcat (2, args); | |
351bd676 | 4839 | pos = make_number (XSTRING (double_dollars (dir))->size); |
6e710ae5 | 4840 | insdef1 = Fcons (double_dollars (insdef), pos); |
570d7624 | 4841 | } |
6e710ae5 RS |
4842 | else |
4843 | insdef1 = double_dollars (insdef); | |
570d7624 | 4844 | } |
58cc3710 | 4845 | else if (STRINGP (initial)) |
351bd676 KH |
4846 | { |
4847 | insdef = initial; | |
4848 | insdef1 = Fcons (double_dollars (insdef), 0); | |
4849 | } | |
570d7624 | 4850 | else |
85b5fe07 | 4851 | insdef = Qnil, insdef1 = Qnil; |
570d7624 JB |
4852 | |
4853 | #ifdef VMS | |
4854 | count = specpdl_ptr - specpdl; | |
4855 | specbind (intern ("completion-ignore-case"), Qt); | |
4856 | #endif | |
4857 | ||
3b7f6e60 | 4858 | GCPRO2 (insdef, default_filename); |
570d7624 | 4859 | val = Fcompleting_read (prompt, intern ("read-file-name-internal"), |
85b5fe07 | 4860 | dir, mustmatch, insdef1, |
97d0510c | 4861 | Qfile_name_history, default_filename); |
570d7624 JB |
4862 | |
4863 | #ifdef VMS | |
4864 | unbind_to (count, Qnil); | |
4865 | #endif | |
4866 | ||
4867 | UNGCPRO; | |
265a9e55 | 4868 | if (NILP (val)) |
570d7624 JB |
4869 | error ("No file name specified"); |
4870 | tem = Fstring_equal (val, insdef); | |
3b7f6e60 EN |
4871 | if (!NILP (tem) && !NILP (default_filename)) |
4872 | return default_filename; | |
b320926a | 4873 | if (XSTRING (val)->size == 0 && NILP (insdef)) |
d9bc1c99 | 4874 | { |
3b7f6e60 EN |
4875 | if (!NILP (default_filename)) |
4876 | return default_filename; | |
d9bc1c99 RS |
4877 | else |
4878 | error ("No default file name"); | |
4879 | } | |
570d7624 JB |
4880 | return Fsubstitute_in_file_name (val); |
4881 | } | |
4882 | ||
5e570b75 | 4883 | #if 0 /* Old version */ |
570d7624 | 4884 | DEFUN ("read-file-name", Fread_file_name, Sread_file_name, 1, 5, 0, |
0de25302 KH |
4885 | /* Don't confuse make-docfile by having two doc strings for this function. |
4886 | make-docfile does not pay attention to #if, for good reason! */ | |
4887 | 0) | |
570d7624 JB |
4888 | (prompt, dir, defalt, mustmatch, initial) |
4889 | Lisp_Object prompt, dir, defalt, mustmatch, initial; | |
4890 | { | |
4891 | Lisp_Object val, insdef, tem; | |
4892 | struct gcpro gcpro1, gcpro2; | |
4893 | register char *homedir; | |
4894 | int count; | |
4895 | ||
265a9e55 | 4896 | if (NILP (dir)) |
570d7624 | 4897 | dir = current_buffer->directory; |
265a9e55 | 4898 | if (NILP (defalt)) |
570d7624 JB |
4899 | defalt = current_buffer->filename; |
4900 | ||
4901 | /* If dir starts with user's homedir, change that to ~. */ | |
4902 | homedir = (char *) egetenv ("HOME"); | |
4903 | if (homedir != 0 | |
93c30b5f | 4904 | && STRINGP (dir) |
570d7624 JB |
4905 | && !strncmp (homedir, XSTRING (dir)->data, strlen (homedir)) |
4906 | && XSTRING (dir)->data[strlen (homedir)] == '/') | |
4907 | { | |
4908 | dir = make_string (XSTRING (dir)->data + strlen (homedir) - 1, | |
4909 | XSTRING (dir)->size - strlen (homedir) + 1); | |
4910 | XSTRING (dir)->data[0] = '~'; | |
4911 | } | |
4912 | ||
265a9e55 | 4913 | if (!NILP (initial)) |
570d7624 JB |
4914 | insdef = initial; |
4915 | else if (insert_default_directory) | |
4916 | insdef = dir; | |
4917 | else | |
4918 | insdef = build_string (""); | |
4919 | ||
4920 | #ifdef VMS | |
4921 | count = specpdl_ptr - specpdl; | |
4922 | specbind (intern ("completion-ignore-case"), Qt); | |
4923 | #endif | |
4924 | ||
4925 | GCPRO2 (insdef, defalt); | |
4926 | val = Fcompleting_read (prompt, intern ("read-file-name-internal"), | |
4927 | dir, mustmatch, | |
15c65264 | 4928 | insert_default_directory ? insdef : Qnil, |
27908c4b | 4929 | Qfile_name_history, Qnil); |
570d7624 JB |
4930 | |
4931 | #ifdef VMS | |
4932 | unbind_to (count, Qnil); | |
4933 | #endif | |
4934 | ||
4935 | UNGCPRO; | |
265a9e55 | 4936 | if (NILP (val)) |
570d7624 JB |
4937 | error ("No file name specified"); |
4938 | tem = Fstring_equal (val, insdef); | |
265a9e55 | 4939 | if (!NILP (tem) && !NILP (defalt)) |
570d7624 JB |
4940 | return defalt; |
4941 | return Fsubstitute_in_file_name (val); | |
4942 | } | |
4943 | #endif /* Old version */ | |
4944 | \f | |
4945 | syms_of_fileio () | |
4946 | { | |
0bf2eed2 | 4947 | Qexpand_file_name = intern ("expand-file-name"); |
273e0829 | 4948 | Qsubstitute_in_file_name = intern ("substitute-in-file-name"); |
0bf2eed2 RS |
4949 | Qdirectory_file_name = intern ("directory-file-name"); |
4950 | Qfile_name_directory = intern ("file-name-directory"); | |
4951 | Qfile_name_nondirectory = intern ("file-name-nondirectory"); | |
642ef245 | 4952 | Qunhandled_file_name_directory = intern ("unhandled-file-name-directory"); |
0bf2eed2 | 4953 | Qfile_name_as_directory = intern ("file-name-as-directory"); |
32f4334d | 4954 | Qcopy_file = intern ("copy-file"); |
a6e6e718 | 4955 | Qmake_directory_internal = intern ("make-directory-internal"); |
32f4334d RS |
4956 | Qdelete_directory = intern ("delete-directory"); |
4957 | Qdelete_file = intern ("delete-file"); | |
4958 | Qrename_file = intern ("rename-file"); | |
4959 | Qadd_name_to_file = intern ("add-name-to-file"); | |
4960 | Qmake_symbolic_link = intern ("make-symbolic-link"); | |
4961 | Qfile_exists_p = intern ("file-exists-p"); | |
4962 | Qfile_executable_p = intern ("file-executable-p"); | |
4963 | Qfile_readable_p = intern ("file-readable-p"); | |
32f4334d | 4964 | Qfile_writable_p = intern ("file-writable-p"); |
1f8653eb RS |
4965 | Qfile_symlink_p = intern ("file-symlink-p"); |
4966 | Qaccess_file = intern ("access-file"); | |
32f4334d | 4967 | Qfile_directory_p = intern ("file-directory-p"); |
adedc71d | 4968 | Qfile_regular_p = intern ("file-regular-p"); |
32f4334d RS |
4969 | Qfile_accessible_directory_p = intern ("file-accessible-directory-p"); |
4970 | Qfile_modes = intern ("file-modes"); | |
4971 | Qset_file_modes = intern ("set-file-modes"); | |
4972 | Qfile_newer_than_file_p = intern ("file-newer-than-file-p"); | |
4973 | Qinsert_file_contents = intern ("insert-file-contents"); | |
4974 | Qwrite_region = intern ("write-region"); | |
4975 | Qverify_visited_file_modtime = intern ("verify-visited-file-modtime"); | |
3ec46acd | 4976 | Qset_visited_file_modtime = intern ("set-visited-file-modtime"); |
32f4334d | 4977 | |
642ef245 | 4978 | staticpro (&Qexpand_file_name); |
273e0829 | 4979 | staticpro (&Qsubstitute_in_file_name); |
642ef245 JB |
4980 | staticpro (&Qdirectory_file_name); |
4981 | staticpro (&Qfile_name_directory); | |
4982 | staticpro (&Qfile_name_nondirectory); | |
4983 | staticpro (&Qunhandled_file_name_directory); | |
4984 | staticpro (&Qfile_name_as_directory); | |
15c65264 | 4985 | staticpro (&Qcopy_file); |
c34b559d | 4986 | staticpro (&Qmake_directory_internal); |
15c65264 RS |
4987 | staticpro (&Qdelete_directory); |
4988 | staticpro (&Qdelete_file); | |
4989 | staticpro (&Qrename_file); | |
4990 | staticpro (&Qadd_name_to_file); | |
4991 | staticpro (&Qmake_symbolic_link); | |
4992 | staticpro (&Qfile_exists_p); | |
4993 | staticpro (&Qfile_executable_p); | |
4994 | staticpro (&Qfile_readable_p); | |
15c65264 | 4995 | staticpro (&Qfile_writable_p); |
1f8653eb RS |
4996 | staticpro (&Qaccess_file); |
4997 | staticpro (&Qfile_symlink_p); | |
15c65264 | 4998 | staticpro (&Qfile_directory_p); |
adedc71d | 4999 | staticpro (&Qfile_regular_p); |
15c65264 RS |
5000 | staticpro (&Qfile_accessible_directory_p); |
5001 | staticpro (&Qfile_modes); | |
5002 | staticpro (&Qset_file_modes); | |
5003 | staticpro (&Qfile_newer_than_file_p); | |
5004 | staticpro (&Qinsert_file_contents); | |
5005 | staticpro (&Qwrite_region); | |
5006 | staticpro (&Qverify_visited_file_modtime); | |
0a61794b | 5007 | staticpro (&Qset_visited_file_modtime); |
642ef245 JB |
5008 | |
5009 | Qfile_name_history = intern ("file-name-history"); | |
5010 | Fset (Qfile_name_history, Qnil); | |
15c65264 RS |
5011 | staticpro (&Qfile_name_history); |
5012 | ||
570d7624 JB |
5013 | Qfile_error = intern ("file-error"); |
5014 | staticpro (&Qfile_error); | |
199607e4 | 5015 | Qfile_already_exists = intern ("file-already-exists"); |
570d7624 | 5016 | staticpro (&Qfile_already_exists); |
c0b7b21c RS |
5017 | Qfile_date_error = intern ("file-date-error"); |
5018 | staticpro (&Qfile_date_error); | |
570d7624 | 5019 | |
5e570b75 | 5020 | #ifdef DOS_NT |
4c3c22f3 RS |
5021 | Qfind_buffer_file_type = intern ("find-buffer-file-type"); |
5022 | staticpro (&Qfind_buffer_file_type); | |
5e570b75 | 5023 | #endif /* DOS_NT */ |
4c3c22f3 | 5024 | |
0d420e88 | 5025 | DEFVAR_LISP ("auto-save-file-format", &Vauto_save_file_format, |
824a483f | 5026 | "*Format in which to write auto-save files.\n\ |
0d420e88 BG |
5027 | Should be a list of symbols naming formats that are defined in `format-alist'.\n\ |
5028 | If it is t, which is the default, auto-save files are written in the\n\ | |
5029 | same format as a regular save would use."); | |
5030 | Vauto_save_file_format = Qt; | |
5031 | ||
5032 | Qformat_decode = intern ("format-decode"); | |
5033 | staticpro (&Qformat_decode); | |
5034 | Qformat_annotate_function = intern ("format-annotate-function"); | |
5035 | staticpro (&Qformat_annotate_function); | |
5036 | ||
d6a3cc15 RS |
5037 | Qcar_less_than_car = intern ("car-less-than-car"); |
5038 | staticpro (&Qcar_less_than_car); | |
5039 | ||
570d7624 JB |
5040 | Fput (Qfile_error, Qerror_conditions, |
5041 | Fcons (Qfile_error, Fcons (Qerror, Qnil))); | |
5042 | Fput (Qfile_error, Qerror_message, | |
5043 | build_string ("File error")); | |
5044 | ||
5045 | Fput (Qfile_already_exists, Qerror_conditions, | |
5046 | Fcons (Qfile_already_exists, | |
5047 | Fcons (Qfile_error, Fcons (Qerror, Qnil)))); | |
5048 | Fput (Qfile_already_exists, Qerror_message, | |
5049 | build_string ("File already exists")); | |
5050 | ||
c0b7b21c RS |
5051 | Fput (Qfile_date_error, Qerror_conditions, |
5052 | Fcons (Qfile_date_error, | |
5053 | Fcons (Qfile_error, Fcons (Qerror, Qnil)))); | |
5054 | Fput (Qfile_date_error, Qerror_message, | |
5055 | build_string ("Cannot set file date")); | |
5056 | ||
570d7624 JB |
5057 | DEFVAR_BOOL ("insert-default-directory", &insert_default_directory, |
5058 | "*Non-nil means when reading a filename start with default dir in minibuffer."); | |
5059 | insert_default_directory = 1; | |
5060 | ||
5061 | DEFVAR_BOOL ("vms-stmlf-recfm", &vms_stmlf_recfm, | |
5062 | "*Non-nil means write new files with record format `stmlf'.\n\ | |
5063 | nil means use format `var'. This variable is meaningful only on VMS."); | |
5064 | vms_stmlf_recfm = 0; | |
5065 | ||
199607e4 RS |
5066 | DEFVAR_LISP ("directory-sep-char", &Vdirectory_sep_char, |
5067 | "Directory separator character for built-in functions that return file names.\n\ | |
5068 | The value should be either ?/ or ?\\ (any other value is treated as ?\\).\n\ | |
5069 | This variable affects the built-in functions only on Windows,\n\ | |
5070 | on other platforms, it is initialized so that Lisp code can find out\n\ | |
5071 | what the normal separator is."); | |
5072 | Vdirectory_sep_char = '/'; | |
5073 | ||
1d1826db RS |
5074 | DEFVAR_LISP ("file-name-handler-alist", &Vfile_name_handler_alist, |
5075 | "*Alist of elements (REGEXP . HANDLER) for file names handled specially.\n\ | |
5076 | If a file name matches REGEXP, then all I/O on that file is done by calling\n\ | |
5077 | HANDLER.\n\ | |
5078 | \n\ | |
5079 | The first argument given to HANDLER is the name of the I/O primitive\n\ | |
5080 | to be handled; the remaining arguments are the arguments that were\n\ | |
5081 | passed to that primitive. For example, if you do\n\ | |
5082 | (file-exists-p FILENAME)\n\ | |
5083 | and FILENAME is handled by HANDLER, then HANDLER is called like this:\n\ | |
642ef245 JB |
5084 | (funcall HANDLER 'file-exists-p FILENAME)\n\ |
5085 | The function `find-file-name-handler' checks this list for a handler\n\ | |
5086 | for its argument."); | |
09121adc RS |
5087 | Vfile_name_handler_alist = Qnil; |
5088 | ||
d6a3cc15 | 5089 | DEFVAR_LISP ("after-insert-file-functions", &Vafter_insert_file_functions, |
246cfea5 RS |
5090 | "A list of functions to be called at the end of `insert-file-contents'.\n\ |
5091 | Each is passed one argument, the number of bytes inserted. It should return\n\ | |
5092 | the new byte count, and leave point the same. If `insert-file-contents' is\n\ | |
5093 | intercepted by a handler from `file-name-handler-alist', that handler is\n\ | |
d6a3cc15 RS |
5094 | responsible for calling the after-insert-file-functions if appropriate."); |
5095 | Vafter_insert_file_functions = Qnil; | |
5096 | ||
5097 | DEFVAR_LISP ("write-region-annotate-functions", &Vwrite_region_annotate_functions, | |
246cfea5 | 5098 | "A list of functions to be called at the start of `write-region'.\n\ |
568aa585 RS |
5099 | Each is passed two arguments, START and END as for `write-region'.\n\ |
5100 | These are usually two numbers but not always; see the documentation\n\ | |
5101 | for `write-region'. The function should return a list of pairs\n\ | |
5102 | of the form (POSITION . STRING), consisting of strings to be effectively\n\ | |
246cfea5 RS |
5103 | inserted at the specified positions of the file being written (1 means to\n\ |
5104 | insert before the first byte written). The POSITIONs must be sorted into\n\ | |
5105 | increasing order. If there are several functions in the list, the several\n\ | |
d6a3cc15 RS |
5106 | lists are merged destructively."); |
5107 | Vwrite_region_annotate_functions = Qnil; | |
5108 | ||
6fc6f94b RS |
5109 | DEFVAR_LISP ("write-region-annotations-so-far", |
5110 | &Vwrite_region_annotations_so_far, | |
5111 | "When an annotation function is called, this holds the previous annotations.\n\ | |
5112 | These are the annotations made by other annotation functions\n\ | |
5113 | that were already called. See also `write-region-annotate-functions'."); | |
5114 | Vwrite_region_annotations_so_far = Qnil; | |
5115 | ||
82c2d839 | 5116 | DEFVAR_LISP ("inhibit-file-name-handlers", &Vinhibit_file_name_handlers, |
268466ed | 5117 | "A list of file name handlers that temporarily should not be used.\n\ |
e3e86241 | 5118 | This applies only to the operation `inhibit-file-name-operation'."); |
82c2d839 RS |
5119 | Vinhibit_file_name_handlers = Qnil; |
5120 | ||
a65970a0 RS |
5121 | DEFVAR_LISP ("inhibit-file-name-operation", &Vinhibit_file_name_operation, |
5122 | "The operation for which `inhibit-file-name-handlers' is applicable."); | |
5123 | Vinhibit_file_name_operation = Qnil; | |
5124 | ||
e54d3b5d | 5125 | DEFVAR_LISP ("auto-save-list-file-name", &Vauto_save_list_file_name, |
51931aca KH |
5126 | "File name in which we write a list of all auto save file names.\n\ |
5127 | This variable is initialized automatically from `auto-save-list-file-prefix'\n\ | |
5128 | shortly after Emacs reads your `.emacs' file, if you have not yet given it\n\ | |
5129 | a non-nil value."); | |
e54d3b5d RS |
5130 | Vauto_save_list_file_name = Qnil; |
5131 | ||
642ef245 | 5132 | defsubr (&Sfind_file_name_handler); |
570d7624 JB |
5133 | defsubr (&Sfile_name_directory); |
5134 | defsubr (&Sfile_name_nondirectory); | |
642ef245 | 5135 | defsubr (&Sunhandled_file_name_directory); |
570d7624 JB |
5136 | defsubr (&Sfile_name_as_directory); |
5137 | defsubr (&Sdirectory_file_name); | |
5138 | defsubr (&Smake_temp_name); | |
5139 | defsubr (&Sexpand_file_name); | |
5140 | defsubr (&Ssubstitute_in_file_name); | |
5141 | defsubr (&Scopy_file); | |
9bbe01fb | 5142 | defsubr (&Smake_directory_internal); |
aa734e17 | 5143 | defsubr (&Sdelete_directory); |
570d7624 JB |
5144 | defsubr (&Sdelete_file); |
5145 | defsubr (&Srename_file); | |
5146 | defsubr (&Sadd_name_to_file); | |
5147 | #ifdef S_IFLNK | |
5148 | defsubr (&Smake_symbolic_link); | |
5149 | #endif /* S_IFLNK */ | |
5150 | #ifdef VMS | |
5151 | defsubr (&Sdefine_logical_name); | |
5152 | #endif /* VMS */ | |
5153 | #ifdef HPUX_NET | |
5154 | defsubr (&Ssysnetunam); | |
5155 | #endif /* HPUX_NET */ | |
5156 | defsubr (&Sfile_name_absolute_p); | |
5157 | defsubr (&Sfile_exists_p); | |
5158 | defsubr (&Sfile_executable_p); | |
5159 | defsubr (&Sfile_readable_p); | |
5160 | defsubr (&Sfile_writable_p); | |
1f8653eb | 5161 | defsubr (&Saccess_file); |
570d7624 JB |
5162 | defsubr (&Sfile_symlink_p); |
5163 | defsubr (&Sfile_directory_p); | |
b72dea2a | 5164 | defsubr (&Sfile_accessible_directory_p); |
f793dc6c | 5165 | defsubr (&Sfile_regular_p); |
570d7624 JB |
5166 | defsubr (&Sfile_modes); |
5167 | defsubr (&Sset_file_modes); | |
c24e9a53 RS |
5168 | defsubr (&Sset_default_file_modes); |
5169 | defsubr (&Sdefault_file_modes); | |
570d7624 JB |
5170 | defsubr (&Sfile_newer_than_file_p); |
5171 | defsubr (&Sinsert_file_contents); | |
5172 | defsubr (&Swrite_region); | |
d6a3cc15 | 5173 | defsubr (&Scar_less_than_car); |
570d7624 JB |
5174 | defsubr (&Sverify_visited_file_modtime); |
5175 | defsubr (&Sclear_visited_file_modtime); | |
f5d5eccf | 5176 | defsubr (&Svisited_file_modtime); |
570d7624 JB |
5177 | defsubr (&Sset_visited_file_modtime); |
5178 | defsubr (&Sdo_auto_save); | |
5179 | defsubr (&Sset_buffer_auto_saved); | |
b60247d9 | 5180 | defsubr (&Sclear_buffer_auto_save_failure); |
570d7624 JB |
5181 | defsubr (&Srecent_auto_save_p); |
5182 | ||
5183 | defsubr (&Sread_file_name_internal); | |
5184 | defsubr (&Sread_file_name); | |
85ffea93 | 5185 | |
483a2e10 | 5186 | #ifdef unix |
85ffea93 | 5187 | defsubr (&Sunix_sync); |
483a2e10 | 5188 | #endif |
570d7624 | 5189 | } |