|
428
|
1 /* File IO for XEmacs.
|
|
|
2 Copyright (C) 1985-1988, 1992-1995 Free Software Foundation, Inc.
|
|
|
3 Copyright (C) 1996 Ben Wing.
|
|
|
4
|
|
|
5 This file is part of XEmacs.
|
|
|
6
|
|
|
7 XEmacs is free software; you can redistribute it and/or modify it
|
|
|
8 under the terms of the GNU General Public License as published by the
|
|
|
9 Free Software Foundation; either version 2, or (at your option) any
|
|
|
10 later version.
|
|
|
11
|
|
|
12 XEmacs is distributed in the hope that it will be useful, but WITHOUT
|
|
|
13 ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
|
|
|
14 FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
|
|
|
15 for more details.
|
|
|
16
|
|
|
17 You should have received a copy of the GNU General Public License
|
|
|
18 along with XEmacs; see the file COPYING. If not, write to
|
|
|
19 the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
|
|
|
20 Boston, MA 02111-1307, USA. */
|
|
|
21
|
|
|
22 /* Synched up with: Mule 2.0, FSF 19.30. */
|
|
|
23 /* More syncing: FSF Emacs 19.34.6 by Marc Paquette <marcpa@cam.org> */
|
|
|
24
|
|
|
25 #include <config.h>
|
|
|
26 #include "lisp.h"
|
|
|
27
|
|
|
28 #include "buffer.h"
|
|
|
29 #include "events.h"
|
|
|
30 #include "frame.h"
|
|
|
31 #include "insdel.h"
|
|
|
32 #include "lstream.h"
|
|
|
33 #include "redisplay.h"
|
|
|
34 #include "sysdep.h"
|
|
|
35 #include "window.h" /* minibuf_level */
|
|
|
36 #ifdef FILE_CODING
|
|
|
37 #include "file-coding.h"
|
|
|
38 #endif
|
|
|
39
|
|
|
40 #ifdef HAVE_LIBGEN_H /* Must come before sysfile.h */
|
|
|
41 #include <libgen.h>
|
|
|
42 #endif
|
|
|
43 #include "sysfile.h"
|
|
|
44 #include "sysproc.h"
|
|
|
45 #include "syspwd.h"
|
|
|
46 #include "systime.h"
|
|
|
47 #include "sysdir.h"
|
|
|
48
|
|
|
49 #ifdef HPUX
|
|
|
50 #include <netio.h>
|
|
|
51 #ifdef HPUX_PRE_8_0
|
|
|
52 #include <errnet.h>
|
|
|
53 #endif /* HPUX_PRE_8_0 */
|
|
|
54 #endif /* HPUX */
|
|
|
55
|
|
442
|
56 #ifdef WIN32_NATIVE
|
|
428
|
57 #define IS_DRIVE(x) isalpha (x)
|
|
|
58 /* Need to lower-case the drive letter, or else expanded
|
|
|
59 filenames will sometimes compare inequal, because
|
|
|
60 `expand-file-name' doesn't always down-case the drive letter. */
|
|
|
61 #define DRIVE_LETTER(x) tolower (x)
|
|
442
|
62 #endif /* WIN32_NATIVE */
|
|
428
|
63
|
|
|
64 int lisp_to_time (Lisp_Object, time_t *);
|
|
|
65 Lisp_Object time_to_lisp (time_t);
|
|
|
66
|
|
|
67 /* Nonzero during writing of auto-save files */
|
|
|
68 static int auto_saving;
|
|
|
69
|
|
|
70 /* Set by auto_save_1 to mode of original file so Fwrite_region_internal
|
|
|
71 will create a new file with the same mode as the original */
|
|
|
72 static int auto_save_mode_bits;
|
|
|
73
|
|
|
74 /* Alist of elements (REGEXP . HANDLER) for file names
|
|
|
75 whose I/O is done with a special handler. */
|
|
|
76 Lisp_Object Vfile_name_handler_alist;
|
|
|
77
|
|
|
78 /* Format for auto-save files */
|
|
|
79 Lisp_Object Vauto_save_file_format;
|
|
|
80
|
|
|
81 /* Lisp functions for translating file formats */
|
|
|
82 Lisp_Object Qformat_decode, Qformat_annotate_function;
|
|
|
83
|
|
|
84 /* Functions to be called to process text properties in inserted file. */
|
|
|
85 Lisp_Object Vafter_insert_file_functions;
|
|
|
86
|
|
|
87 /* Functions to be called to create text property annotations for file. */
|
|
|
88 Lisp_Object Vwrite_region_annotate_functions;
|
|
|
89
|
|
|
90 /* During build_annotations, each time an annotation function is called,
|
|
|
91 this holds the annotations made by the previous functions. */
|
|
|
92 Lisp_Object Vwrite_region_annotations_so_far;
|
|
|
93
|
|
|
94 /* File name in which we write a list of all our auto save files. */
|
|
|
95 Lisp_Object Vauto_save_list_file_name;
|
|
|
96
|
|
|
97 int disable_auto_save_when_buffer_shrinks;
|
|
|
98
|
|
|
99 Lisp_Object Vdirectory_sep_char;
|
|
|
100
|
|
|
101 /* These variables describe handlers that have "already" had a chance
|
|
|
102 to handle the current operation.
|
|
|
103
|
|
|
104 Vinhibit_file_name_handlers is a list of file name handlers.
|
|
|
105 Vinhibit_file_name_operation is the operation being handled.
|
|
|
106 If we try to handle that operation, we ignore those handlers. */
|
|
|
107
|
|
|
108 static Lisp_Object Vinhibit_file_name_handlers;
|
|
|
109 static Lisp_Object Vinhibit_file_name_operation;
|
|
|
110
|
|
|
111 Lisp_Object Qfile_error, Qfile_already_exists;
|
|
|
112
|
|
|
113 Lisp_Object Qauto_save_hook;
|
|
|
114 Lisp_Object Qauto_save_error;
|
|
|
115 Lisp_Object Qauto_saving;
|
|
|
116
|
|
|
117 Lisp_Object Qcar_less_than_car;
|
|
|
118
|
|
|
119 Lisp_Object Qcompute_buffer_file_truename;
|
|
|
120
|
|
|
121 EXFUN (Frunning_temacs_p, 0);
|
|
|
122
|
|
|
123 /* signal a file error when errno contains a meaningful value. */
|
|
|
124
|
|
|
125 DOESNT_RETURN
|
|
442
|
126 report_file_error (const char *string, Lisp_Object data)
|
|
428
|
127 {
|
|
|
128 /* #### dmoore - This uses current_buffer, better make sure no one
|
|
|
129 has GC'd the current buffer. File handlers are giving me a headache
|
|
|
130 maybe I'll just always protect current_buffer around all of those
|
|
|
131 calls. */
|
|
|
132
|
|
|
133 signal_error (Qfile_error,
|
|
|
134 Fcons (build_translated_string (string),
|
|
|
135 Fcons (lisp_strerror (errno), data)));
|
|
|
136 }
|
|
|
137
|
|
|
138 void
|
|
442
|
139 maybe_report_file_error (const char *string, Lisp_Object data,
|
|
428
|
140 Lisp_Object class, Error_behavior errb)
|
|
|
141 {
|
|
|
142 /* Optimization: */
|
|
|
143 if (ERRB_EQ (errb, ERROR_ME_NOT))
|
|
|
144 return;
|
|
|
145
|
|
|
146 maybe_signal_error (Qfile_error,
|
|
|
147 Fcons (build_translated_string (string),
|
|
|
148 Fcons (lisp_strerror (errno), data)),
|
|
|
149 class, errb);
|
|
|
150 }
|
|
|
151
|
|
|
152 /* signal a file error when errno does not contain a meaningful value. */
|
|
|
153
|
|
|
154 DOESNT_RETURN
|
|
442
|
155 signal_file_error (const char *string, Lisp_Object data)
|
|
428
|
156 {
|
|
|
157 signal_error (Qfile_error,
|
|
|
158 list2 (build_translated_string (string), data));
|
|
|
159 }
|
|
|
160
|
|
|
161 void
|
|
442
|
162 maybe_signal_file_error (const char *string, Lisp_Object data,
|
|
428
|
163 Lisp_Object class, Error_behavior errb)
|
|
|
164 {
|
|
|
165 /* Optimization: */
|
|
|
166 if (ERRB_EQ (errb, ERROR_ME_NOT))
|
|
|
167 return;
|
|
|
168 maybe_signal_error (Qfile_error,
|
|
|
169 list2 (build_translated_string (string), data),
|
|
|
170 class, errb);
|
|
|
171 }
|
|
|
172
|
|
|
173 DOESNT_RETURN
|
|
442
|
174 signal_double_file_error (const char *string1, const char *string2,
|
|
428
|
175 Lisp_Object data)
|
|
|
176 {
|
|
|
177 signal_error (Qfile_error,
|
|
|
178 list3 (build_translated_string (string1),
|
|
|
179 build_translated_string (string2),
|
|
|
180 data));
|
|
|
181 }
|
|
|
182
|
|
|
183 void
|
|
442
|
184 maybe_signal_double_file_error (const char *string1, const char *string2,
|
|
428
|
185 Lisp_Object data, Lisp_Object class,
|
|
|
186 Error_behavior errb)
|
|
|
187 {
|
|
|
188 /* Optimization: */
|
|
|
189 if (ERRB_EQ (errb, ERROR_ME_NOT))
|
|
|
190 return;
|
|
|
191 maybe_signal_error (Qfile_error,
|
|
|
192 list3 (build_translated_string (string1),
|
|
|
193 build_translated_string (string2),
|
|
|
194 data),
|
|
|
195 class, errb);
|
|
|
196 }
|
|
|
197
|
|
|
198 DOESNT_RETURN
|
|
442
|
199 signal_double_file_error_2 (const char *string1, const char *string2,
|
|
428
|
200 Lisp_Object data1, Lisp_Object data2)
|
|
|
201 {
|
|
|
202 signal_error (Qfile_error,
|
|
|
203 list4 (build_translated_string (string1),
|
|
|
204 build_translated_string (string2),
|
|
|
205 data1, data2));
|
|
|
206 }
|
|
|
207
|
|
|
208 void
|
|
442
|
209 maybe_signal_double_file_error_2 (const char *string1, const char *string2,
|
|
428
|
210 Lisp_Object data1, Lisp_Object data2,
|
|
|
211 Lisp_Object class, Error_behavior errb)
|
|
|
212 {
|
|
|
213 /* Optimization: */
|
|
|
214 if (ERRB_EQ (errb, ERROR_ME_NOT))
|
|
|
215 return;
|
|
|
216 maybe_signal_error (Qfile_error,
|
|
|
217 list4 (build_translated_string (string1),
|
|
|
218 build_translated_string (string2),
|
|
|
219 data1, data2),
|
|
|
220 class, errb);
|
|
|
221 }
|
|
|
222
|
|
|
223
|
|
|
224 /* Just like strerror(3), except return a lisp string instead of char *.
|
|
|
225 The string needs to be converted since it may be localized.
|
|
|
226 Perhaps this should use strerror-coding-system instead? */
|
|
|
227 Lisp_Object
|
|
|
228 lisp_strerror (int errnum)
|
|
|
229 {
|
|
440
|
230 return build_ext_string (strerror (errnum), Qnative);
|
|
428
|
231 }
|
|
|
232
|
|
|
233 static Lisp_Object
|
|
|
234 close_file_unwind (Lisp_Object fd)
|
|
|
235 {
|
|
|
236 if (CONSP (fd))
|
|
|
237 {
|
|
|
238 if (INTP (XCAR (fd)))
|
|
|
239 close (XINT (XCAR (fd)));
|
|
|
240
|
|
|
241 free_cons (XCONS (fd));
|
|
|
242 }
|
|
|
243 else
|
|
|
244 close (XINT (fd));
|
|
|
245
|
|
|
246 return Qnil;
|
|
|
247 }
|
|
|
248
|
|
|
249 static Lisp_Object
|
|
|
250 delete_stream_unwind (Lisp_Object stream)
|
|
|
251 {
|
|
|
252 Lstream_delete (XLSTREAM (stream));
|
|
|
253 return Qnil;
|
|
|
254 }
|
|
|
255
|
|
|
256 /* Restore point, having saved it as a marker. */
|
|
|
257
|
|
|
258 static Lisp_Object
|
|
|
259 restore_point_unwind (Lisp_Object point_marker)
|
|
|
260 {
|
|
|
261 BUF_SET_PT (current_buffer, marker_position (point_marker));
|
|
|
262 return Fset_marker (point_marker, Qnil, Qnil);
|
|
|
263 }
|
|
|
264
|
|
|
265 /* Versions of read() and write() that allow quitting out of the actual
|
|
|
266 I/O. We don't use immediate_quit (i.e. direct longjmp() out of the
|
|
|
267 signal handler) because that's way too losing.
|
|
|
268
|
|
|
269 (#### Actually, longjmp()ing out of the signal handler may not be
|
|
|
270 as losing as I thought. See sys_do_signal() in sysdep.c.) */
|
|
|
271
|
|
|
272 ssize_t
|
|
|
273 read_allowing_quit (int fildes, void *buf, size_t size)
|
|
|
274 {
|
|
|
275 QUIT;
|
|
|
276 return sys_read_1 (fildes, buf, size, 1);
|
|
|
277 }
|
|
|
278
|
|
|
279 ssize_t
|
|
442
|
280 write_allowing_quit (int fildes, const void *buf, size_t size)
|
|
428
|
281 {
|
|
|
282 QUIT;
|
|
|
283 return sys_write_1 (fildes, buf, size, 1);
|
|
|
284 }
|
|
|
285
|
|
|
286
|
|
|
287 Lisp_Object Qexpand_file_name;
|
|
|
288 Lisp_Object Qfile_truename;
|
|
|
289 Lisp_Object Qsubstitute_in_file_name;
|
|
|
290 Lisp_Object Qdirectory_file_name;
|
|
|
291 Lisp_Object Qfile_name_directory;
|
|
|
292 Lisp_Object Qfile_name_nondirectory;
|
|
|
293 Lisp_Object Qunhandled_file_name_directory;
|
|
|
294 Lisp_Object Qfile_name_as_directory;
|
|
|
295 Lisp_Object Qcopy_file;
|
|
|
296 Lisp_Object Qmake_directory_internal;
|
|
|
297 Lisp_Object Qdelete_directory;
|
|
|
298 Lisp_Object Qdelete_file;
|
|
|
299 Lisp_Object Qrename_file;
|
|
|
300 Lisp_Object Qadd_name_to_file;
|
|
|
301 Lisp_Object Qmake_symbolic_link;
|
|
|
302 Lisp_Object Qfile_exists_p;
|
|
|
303 Lisp_Object Qfile_executable_p;
|
|
|
304 Lisp_Object Qfile_readable_p;
|
|
|
305 Lisp_Object Qfile_symlink_p;
|
|
|
306 Lisp_Object Qfile_writable_p;
|
|
|
307 Lisp_Object Qfile_directory_p;
|
|
|
308 Lisp_Object Qfile_regular_p;
|
|
|
309 Lisp_Object Qfile_accessible_directory_p;
|
|
|
310 Lisp_Object Qfile_modes;
|
|
|
311 Lisp_Object Qset_file_modes;
|
|
|
312 Lisp_Object Qfile_newer_than_file_p;
|
|
|
313 Lisp_Object Qinsert_file_contents;
|
|
|
314 Lisp_Object Qwrite_region;
|
|
|
315 Lisp_Object Qverify_visited_file_modtime;
|
|
|
316 Lisp_Object Qset_visited_file_modtime;
|
|
|
317
|
|
|
318 /* If FILENAME is handled specially on account of its syntax,
|
|
|
319 return its handler function. Otherwise, return nil. */
|
|
|
320
|
|
|
321 DEFUN ("find-file-name-handler", Ffind_file_name_handler, 1, 2, 0, /*
|
|
|
322 Return FILENAME's handler function for OPERATION, if it has one.
|
|
|
323 Otherwise, return nil.
|
|
|
324 A file name is handled if one of the regular expressions in
|
|
|
325 `file-name-handler-alist' matches it.
|
|
|
326
|
|
|
327 If OPERATION equals `inhibit-file-name-operation', then we ignore
|
|
|
328 any handlers that are members of `inhibit-file-name-handlers',
|
|
|
329 but we still do run any other handlers. This lets handlers
|
|
|
330 use the standard functions without calling themselves recursively.
|
|
|
331 */
|
|
|
332 (filename, operation))
|
|
|
333 {
|
|
|
334 /* This function does not GC */
|
|
|
335 /* This function can be called during GC */
|
|
|
336 /* This function must not munge the match data. */
|
|
|
337 Lisp_Object chain, inhibited_handlers;
|
|
|
338
|
|
|
339 CHECK_STRING (filename);
|
|
|
340
|
|
|
341 if (EQ (operation, Vinhibit_file_name_operation))
|
|
|
342 inhibited_handlers = Vinhibit_file_name_handlers;
|
|
|
343 else
|
|
|
344 inhibited_handlers = Qnil;
|
|
|
345
|
|
|
346 EXTERNAL_LIST_LOOP (chain, Vfile_name_handler_alist)
|
|
|
347 {
|
|
|
348 Lisp_Object elt = XCAR (chain);
|
|
|
349 if (CONSP (elt))
|
|
|
350 {
|
|
|
351 Lisp_Object string = XCAR (elt);
|
|
|
352 if (STRINGP (string)
|
|
|
353 && (fast_lisp_string_match (string, filename) >= 0))
|
|
|
354 {
|
|
|
355 Lisp_Object handler = XCDR (elt);
|
|
|
356 if (NILP (Fmemq (handler, inhibited_handlers)))
|
|
|
357 return handler;
|
|
|
358 }
|
|
|
359 }
|
|
|
360 QUIT;
|
|
|
361 }
|
|
|
362 return Qnil;
|
|
|
363 }
|
|
|
364
|
|
|
365 static Lisp_Object
|
|
|
366 call2_check_string (Lisp_Object fn, Lisp_Object arg0, Lisp_Object arg1)
|
|
|
367 {
|
|
|
368 /* This function can call lisp */
|
|
|
369 Lisp_Object result = call2 (fn, arg0, arg1);
|
|
|
370 CHECK_STRING (result);
|
|
|
371 return result;
|
|
|
372 }
|
|
|
373
|
|
|
374 static Lisp_Object
|
|
|
375 call2_check_string_or_nil (Lisp_Object fn, Lisp_Object arg0, Lisp_Object arg1)
|
|
|
376 {
|
|
|
377 /* This function can call lisp */
|
|
|
378 Lisp_Object result = call2 (fn, arg0, arg1);
|
|
|
379 if (!NILP (result))
|
|
|
380 CHECK_STRING (result);
|
|
|
381 return result;
|
|
|
382 }
|
|
|
383
|
|
|
384 static Lisp_Object
|
|
|
385 call3_check_string (Lisp_Object fn, Lisp_Object arg0,
|
|
|
386 Lisp_Object arg1, Lisp_Object arg2)
|
|
|
387 {
|
|
|
388 /* This function can call lisp */
|
|
|
389 Lisp_Object result = call3 (fn, arg0, arg1, arg2);
|
|
|
390 CHECK_STRING (result);
|
|
|
391 return result;
|
|
|
392 }
|
|
|
393
|
|
|
394
|
|
|
395 DEFUN ("file-name-directory", Ffile_name_directory, 1, 1, 0, /*
|
|
|
396 Return the directory component in file name NAME.
|
|
|
397 Return nil if NAME does not include a directory.
|
|
|
398 Otherwise return a directory spec.
|
|
|
399 Given a Unix syntax file name, returns a string ending in slash.
|
|
|
400 */
|
|
|
401 (file))
|
|
|
402 {
|
|
442
|
403 /* This function can GC. GC checked 2000-07-28 ben */
|
|
428
|
404 Bufbyte *beg;
|
|
|
405 Bufbyte *p;
|
|
|
406 Lisp_Object handler;
|
|
|
407
|
|
|
408 CHECK_STRING (file);
|
|
|
409
|
|
|
410 /* If the file name has special constructs in it,
|
|
|
411 call the corresponding file handler. */
|
|
|
412 handler = Ffind_file_name_handler (file, Qfile_name_directory);
|
|
|
413 if (!NILP (handler))
|
|
|
414 return call2_check_string_or_nil (handler, Qfile_name_directory, file);
|
|
|
415
|
|
|
416 #ifdef FILE_SYSTEM_CASE
|
|
|
417 file = FILE_SYSTEM_CASE (file);
|
|
|
418 #endif
|
|
|
419 beg = XSTRING_DATA (file);
|
|
|
420 p = beg + XSTRING_LENGTH (file);
|
|
|
421
|
|
|
422 while (p != beg && !IS_ANY_SEP (p[-1])
|
|
442
|
423 #ifdef WIN32_NATIVE
|
|
428
|
424 /* only recognize drive specifier at beginning */
|
|
|
425 && !(p[-1] == ':' && p == beg + 2)
|
|
|
426 #endif
|
|
|
427 ) p--;
|
|
|
428
|
|
|
429 if (p == beg)
|
|
|
430 return Qnil;
|
|
442
|
431 #ifdef WIN32_NATIVE
|
|
428
|
432 /* Expansion of "c:" to drive and default directory. */
|
|
|
433 /* (NT does the right thing.) */
|
|
|
434 if (p == beg + 2 && beg[1] == ':')
|
|
|
435 {
|
|
|
436 /* MAXPATHLEN+1 is guaranteed to be enough space for getdefdir. */
|
|
442
|
437 Bufbyte *res = (Bufbyte*) alloca (MAXPATHLEN + 1);
|
|
|
438 if (_getdcwd (toupper (*beg) - 'A' + 1, (char *)res, MAXPATHLEN))
|
|
428
|
439 {
|
|
|
440 char *c=((char *) res) + strlen ((char *) res);
|
|
|
441 if (!IS_DIRECTORY_SEP (*c))
|
|
|
442 {
|
|
|
443 *c++ = DIRECTORY_SEP;
|
|
|
444 *c = '\0';
|
|
|
445 }
|
|
|
446 beg = res;
|
|
|
447 p = beg + strlen ((char *) beg);
|
|
|
448 }
|
|
|
449 }
|
|
442
|
450 #endif /* WIN32_NATIVE */
|
|
428
|
451 return make_string (beg, p - beg);
|
|
|
452 }
|
|
|
453
|
|
|
454 DEFUN ("file-name-nondirectory", Ffile_name_nondirectory, 1, 1, 0, /*
|
|
|
455 Return file name NAME sans its directory.
|
|
|
456 For example, in a Unix-syntax file name,
|
|
|
457 this is everything after the last slash,
|
|
|
458 or the entire name if it contains no slash.
|
|
|
459 */
|
|
|
460 (file))
|
|
|
461 {
|
|
442
|
462 /* This function can GC. GC checked 2000-07-28 ben */
|
|
428
|
463 Bufbyte *beg, *p, *end;
|
|
|
464 Lisp_Object handler;
|
|
|
465
|
|
|
466 CHECK_STRING (file);
|
|
|
467
|
|
|
468 /* If the file name has special constructs in it,
|
|
|
469 call the corresponding file handler. */
|
|
|
470 handler = Ffind_file_name_handler (file, Qfile_name_nondirectory);
|
|
|
471 if (!NILP (handler))
|
|
|
472 return call2_check_string (handler, Qfile_name_nondirectory, file);
|
|
|
473
|
|
|
474 beg = XSTRING_DATA (file);
|
|
|
475 end = p = beg + XSTRING_LENGTH (file);
|
|
|
476
|
|
|
477 while (p != beg && !IS_ANY_SEP (p[-1])
|
|
442
|
478 #ifdef WIN32_NATIVE
|
|
428
|
479 /* only recognize drive specifier at beginning */
|
|
|
480 && !(p[-1] == ':' && p == beg + 2)
|
|
|
481 #endif
|
|
|
482 ) p--;
|
|
|
483
|
|
|
484 return make_string (p, end - p);
|
|
|
485 }
|
|
|
486
|
|
|
487 DEFUN ("unhandled-file-name-directory", Funhandled_file_name_directory, 1, 1, 0, /*
|
|
|
488 Return a directly usable directory name somehow associated with FILENAME.
|
|
|
489 A `directly usable' directory name is one that may be used without the
|
|
|
490 intervention of any file handler.
|
|
|
491 If FILENAME is a directly usable file itself, return
|
|
|
492 \(file-name-directory FILENAME).
|
|
|
493 The `call-process' and `start-process' functions use this function to
|
|
|
494 get a current directory to run processes in.
|
|
|
495 */
|
|
|
496 (filename))
|
|
|
497 {
|
|
442
|
498 /* This function can GC. GC checked 2000-07-28 ben */
|
|
428
|
499 Lisp_Object handler;
|
|
|
500
|
|
|
501 /* If the file name has special constructs in it,
|
|
|
502 call the corresponding file handler. */
|
|
|
503 handler = Ffind_file_name_handler (filename, Qunhandled_file_name_directory);
|
|
|
504 if (!NILP (handler))
|
|
|
505 return call2 (handler, Qunhandled_file_name_directory,
|
|
|
506 filename);
|
|
|
507
|
|
|
508 return Ffile_name_directory (filename);
|
|
|
509 }
|
|
|
510
|
|
|
511
|
|
|
512 static char *
|
|
|
513 file_name_as_directory (char *out, char *in)
|
|
|
514 {
|
|
442
|
515 /* This function cannot GC */
|
|
428
|
516 int size = strlen (in);
|
|
|
517
|
|
|
518 if (size == 0)
|
|
|
519 {
|
|
|
520 out[0] = '.';
|
|
|
521 out[1] = DIRECTORY_SEP;
|
|
|
522 out[2] = '\0';
|
|
|
523 }
|
|
|
524 else
|
|
|
525 {
|
|
|
526 strcpy (out, in);
|
|
|
527 /* Append a slash if necessary */
|
|
|
528 if (!IS_ANY_SEP (out[size-1]))
|
|
|
529 {
|
|
|
530 out[size] = DIRECTORY_SEP;
|
|
|
531 out[size + 1] = '\0';
|
|
|
532 }
|
|
|
533 }
|
|
|
534 return out;
|
|
|
535 }
|
|
|
536
|
|
|
537 DEFUN ("file-name-as-directory", Ffile_name_as_directory, 1, 1, 0, /*
|
|
|
538 Return a string representing file FILENAME interpreted as a directory.
|
|
|
539 This operation exists because a directory is also a file, but its name as
|
|
|
540 a directory is different from its name as a file.
|
|
|
541 The result can be used as the value of `default-directory'
|
|
|
542 or passed as second argument to `expand-file-name'.
|
|
|
543 For a Unix-syntax file name, just appends a slash,
|
|
|
544 except for (file-name-as-directory \"\") => \"./\".
|
|
|
545 */
|
|
|
546 (file))
|
|
|
547 {
|
|
442
|
548 /* This function can GC. GC checked 2000-07-28 ben */
|
|
428
|
549 char *buf;
|
|
|
550 Lisp_Object handler;
|
|
|
551
|
|
|
552 CHECK_STRING (file);
|
|
|
553
|
|
|
554 /* If the file name has special constructs in it,
|
|
|
555 call the corresponding file handler. */
|
|
|
556 handler = Ffind_file_name_handler (file, Qfile_name_as_directory);
|
|
|
557 if (!NILP (handler))
|
|
|
558 return call2_check_string (handler, Qfile_name_as_directory, file);
|
|
|
559
|
|
|
560 buf = (char *) alloca (XSTRING_LENGTH (file) + 10);
|
|
|
561 return build_string (file_name_as_directory
|
|
|
562 (buf, (char *) XSTRING_DATA (file)));
|
|
|
563 }
|
|
|
564
|
|
|
565 /*
|
|
|
566 * Convert from directory name to filename.
|
|
|
567 * On UNIX, it's simple: just make sure there isn't a terminating /
|
|
|
568 *
|
|
|
569 * Value is nonzero if the string output is different from the input.
|
|
|
570 */
|
|
|
571
|
|
|
572 static int
|
|
442
|
573 directory_file_name (const char *src, char *dst)
|
|
428
|
574 {
|
|
442
|
575 /* This function cannot GC */
|
|
440
|
576 long slen = strlen (src);
|
|
428
|
577 /* Process as Unix format: just remove any final slash.
|
|
|
578 But leave "/" unchanged; do not change it to "". */
|
|
|
579 strcpy (dst, src);
|
|
|
580 if (slen > 1
|
|
|
581 && IS_DIRECTORY_SEP (dst[slen - 1])
|
|
442
|
582 #ifdef WIN32_NATIVE
|
|
428
|
583 && !IS_ANY_SEP (dst[slen - 2])
|
|
442
|
584 #endif /* WIN32_NATIVE */
|
|
428
|
585 )
|
|
|
586 dst[slen - 1] = 0;
|
|
|
587 return 1;
|
|
|
588 }
|
|
|
589
|
|
|
590 DEFUN ("directory-file-name", Fdirectory_file_name, 1, 1, 0, /*
|
|
|
591 Return the file name of the directory named DIR.
|
|
|
592 This is the name of the file that holds the data for the directory DIR.
|
|
|
593 This operation exists because a directory is also a file, but its name as
|
|
|
594 a directory is different from its name as a file.
|
|
|
595 In Unix-syntax, this function just removes the final slash.
|
|
|
596 */
|
|
|
597 (directory))
|
|
|
598 {
|
|
442
|
599 /* This function can GC. GC checked 2000-07-28 ben */
|
|
428
|
600 char *buf;
|
|
|
601 Lisp_Object handler;
|
|
|
602
|
|
|
603 CHECK_STRING (directory);
|
|
|
604
|
|
|
605 #if 0 /* #### WTF? */
|
|
|
606 if (NILP (directory))
|
|
|
607 return Qnil;
|
|
|
608 #endif
|
|
|
609
|
|
|
610 /* If the file name has special constructs in it,
|
|
|
611 call the corresponding file handler. */
|
|
|
612 handler = Ffind_file_name_handler (directory, Qdirectory_file_name);
|
|
|
613 if (!NILP (handler))
|
|
|
614 return call2_check_string (handler, Qdirectory_file_name, directory);
|
|
|
615 buf = (char *) alloca (XSTRING_LENGTH (directory) + 20);
|
|
|
616 directory_file_name ((char *) XSTRING_DATA (directory), buf);
|
|
|
617 return build_string (buf);
|
|
|
618 }
|
|
|
619
|
|
|
620 /* Fmake_temp_name used to be a simple wrapper around mktemp(), but it
|
|
|
621 proved too broken for our purposes (it supported only 26 or 62
|
|
|
622 unique names under some implementations). For example, this
|
|
|
623 arbitrary limit broke generation of Gnus Incoming* files.
|
|
|
624
|
|
|
625 This implementation is better than what one usually finds in libc.
|
|
|
626 --hniksic */
|
|
|
627
|
|
442
|
628 static unsigned int temp_name_rand;
|
|
|
629
|
|
428
|
630 DEFUN ("make-temp-name", Fmake_temp_name, 1, 1, 0, /*
|
|
442
|
631 Generate a temporary file name starting with PREFIX.
|
|
428
|
632 The Emacs process number forms part of the result, so there is no
|
|
|
633 danger of generating a name being used by another process.
|
|
|
634
|
|
|
635 In addition, this function makes an attempt to choose a name that
|
|
|
636 does not specify an existing file. To make this work, PREFIX should
|
|
|
637 be an absolute file name.
|
|
|
638 */
|
|
|
639 (prefix))
|
|
|
640 {
|
|
442
|
641 static const char tbl[64] =
|
|
|
642 {
|
|
428
|
643 'A','B','C','D','E','F','G','H',
|
|
|
644 'I','J','K','L','M','N','O','P',
|
|
|
645 'Q','R','S','T','U','V','W','X',
|
|
|
646 'Y','Z','a','b','c','d','e','f',
|
|
|
647 'g','h','i','j','k','l','m','n',
|
|
|
648 'o','p','q','r','s','t','u','v',
|
|
|
649 'w','x','y','z','0','1','2','3',
|
|
442
|
650 '4','5','6','7','8','9','-','_'
|
|
|
651 };
|
|
428
|
652
|
|
|
653 Lisp_Object val;
|
|
|
654 Bytecount len;
|
|
|
655 Bufbyte *p, *data;
|
|
|
656
|
|
|
657 CHECK_STRING (prefix);
|
|
|
658
|
|
|
659 /* I was tempted to apply Fexpand_file_name on PREFIX here, but it's
|
|
|
660 a bad idea because:
|
|
|
661
|
|
|
662 1) It might change the prefix, so the resulting string might not
|
|
|
663 begin with PREFIX. This violates the principle of least
|
|
|
664 surprise.
|
|
|
665
|
|
|
666 2) It breaks under many unforeseeable circumstances, such as with
|
|
|
667 the code that uses (make-temp-name "") instead of
|
|
|
668 (make-temp-name "./").
|
|
|
669
|
|
|
670 3) It might yield unexpected (to stat(2)) results in the presence
|
|
|
671 of EFS and file name handlers. */
|
|
|
672
|
|
|
673 len = XSTRING_LENGTH (prefix);
|
|
|
674 val = make_uninit_string (len + 6);
|
|
|
675 data = XSTRING_DATA (val);
|
|
|
676 memcpy (data, XSTRING_DATA (prefix), len);
|
|
|
677 p = data + len;
|
|
|
678
|
|
|
679 /* VAL is created by adding 6 characters to PREFIX. The first three
|
|
|
680 are the PID of this process, in base 64, and the second three are
|
|
442
|
681 a pseudo-random number seeded from process startup time. This
|
|
|
682 ensures 262144 unique file names per PID per PREFIX per machine. */
|
|
|
683
|
|
|
684 {
|
|
|
685 unsigned int pid = (unsigned int) getpid ();
|
|
|
686 *p++ = tbl[(pid >> 0) & 63];
|
|
|
687 *p++ = tbl[(pid >> 6) & 63];
|
|
|
688 *p++ = tbl[(pid >> 12) & 63];
|
|
|
689 }
|
|
428
|
690
|
|
|
691 /* Here we try to minimize useless stat'ing when this function is
|
|
|
692 invoked many times successively with the same PREFIX. We achieve
|
|
442
|
693 this by using a very pseudo-random number generator to generate
|
|
|
694 file names unique to this process, with a very long cycle. */
|
|
428
|
695
|
|
|
696 while (1)
|
|
|
697 {
|
|
|
698 struct stat ignored;
|
|
442
|
699
|
|
|
700 p[0] = tbl[(temp_name_rand >> 0) & 63];
|
|
|
701 p[1] = tbl[(temp_name_rand >> 6) & 63];
|
|
|
702 p[2] = tbl[(temp_name_rand >> 12) & 63];
|
|
428
|
703
|
|
|
704 /* Poor man's congruential RN generator. Replace with ++count
|
|
|
705 for debugging. */
|
|
442
|
706 temp_name_rand += 25229;
|
|
|
707 temp_name_rand %= 225307;
|
|
428
|
708
|
|
|
709 QUIT;
|
|
|
710
|
|
442
|
711 if (xemacs_stat ((const char *) data, &ignored) < 0)
|
|
428
|
712 {
|
|
|
713 /* We want to return only if errno is ENOENT. */
|
|
|
714 if (errno == ENOENT)
|
|
|
715 return val;
|
|
|
716
|
|
|
717 /* The error here is dubious, but there is little else we
|
|
|
718 can do. The alternatives are to return nil, which is
|
|
|
719 as bad as (and in many cases worse than) throwing the
|
|
|
720 error, or to ignore the error, which will likely result
|
|
|
721 in inflooping. */
|
|
|
722 report_file_error ("Cannot create temporary name for prefix",
|
|
|
723 list1 (prefix));
|
|
|
724 return Qnil; /* not reached */
|
|
|
725 }
|
|
|
726 }
|
|
|
727 }
|
|
|
728
|
|
|
729
|
|
|
730 DEFUN ("expand-file-name", Fexpand_file_name, 1, 2, 0, /*
|
|
|
731 Convert filename NAME to absolute, and canonicalize it.
|
|
|
732 Second arg DEFAULT-DIRECTORY is directory to start with if NAME is relative
|
|
|
733 (does not start with slash); if DEFAULT-DIRECTORY is nil or missing,
|
|
|
734 the current buffer's value of default-directory is used.
|
|
|
735 File name components that are `.' are removed, and
|
|
|
736 so are file name components followed by `..', along with the `..' itself;
|
|
|
737 note that these simplifications are done without checking the resulting
|
|
|
738 file names in the file system.
|
|
|
739 An initial `~/' expands to your home directory.
|
|
|
740 An initial `~USER/' expands to USER's home directory.
|
|
|
741 See also the function `substitute-in-file-name'.
|
|
|
742 */
|
|
|
743 (name, default_directory))
|
|
|
744 {
|
|
442
|
745 /* This function can GC. GC-checked 2000-07-11 ben */
|
|
428
|
746 Bufbyte *nm;
|
|
|
747
|
|
|
748 Bufbyte *newdir, *p, *o;
|
|
|
749 int tlen;
|
|
|
750 Bufbyte *target;
|
|
442
|
751 #ifdef WIN32_NATIVE
|
|
428
|
752 int drive = 0;
|
|
|
753 int collapse_newdir = 1;
|
|
|
754 #else
|
|
|
755 struct passwd *pw;
|
|
442
|
756 #endif /* WIN32_NATIVE */
|
|
428
|
757 int length;
|
|
|
758 Lisp_Object handler;
|
|
442
|
759 #ifdef CYGWIN
|
|
428
|
760 char *user;
|
|
|
761 #endif
|
|
442
|
762 struct gcpro gcpro1, gcpro2;
|
|
|
763
|
|
|
764 /* both of these get set below */
|
|
|
765 GCPRO2 (name, default_directory);
|
|
428
|
766
|
|
|
767 CHECK_STRING (name);
|
|
|
768
|
|
|
769 /* If the file name has special constructs in it,
|
|
|
770 call the corresponding file handler. */
|
|
|
771 handler = Ffind_file_name_handler (name, Qexpand_file_name);
|
|
|
772 if (!NILP (handler))
|
|
442
|
773 {
|
|
|
774 UNGCPRO;
|
|
|
775 return call3_check_string (handler, Qexpand_file_name, name,
|
|
|
776 default_directory);
|
|
|
777 }
|
|
428
|
778
|
|
|
779 /* Use the buffer's default-directory if DEFAULT_DIRECTORY is omitted. */
|
|
|
780 if (NILP (default_directory))
|
|
|
781 default_directory = current_buffer->directory;
|
|
|
782 if (! STRINGP (default_directory))
|
|
|
783 default_directory = build_string ("/");
|
|
|
784
|
|
|
785 if (!NILP (default_directory))
|
|
|
786 {
|
|
|
787 handler = Ffind_file_name_handler (default_directory, Qexpand_file_name);
|
|
|
788 if (!NILP (handler))
|
|
442
|
789 {
|
|
|
790 UNGCPRO;
|
|
|
791 return call3 (handler, Qexpand_file_name, name, default_directory);
|
|
|
792 }
|
|
428
|
793 }
|
|
|
794
|
|
|
795 o = XSTRING_DATA (default_directory);
|
|
|
796
|
|
|
797 /* Make sure DEFAULT_DIRECTORY is properly expanded.
|
|
|
798 It would be better to do this down below where we actually use
|
|
|
799 default_directory. Unfortunately, calling Fexpand_file_name recursively
|
|
|
800 could invoke GC, and the strings might be relocated. This would
|
|
|
801 be annoying because we have pointers into strings lying around
|
|
|
802 that would need adjusting, and people would add new pointers to
|
|
|
803 the code and forget to adjust them, resulting in intermittent bugs.
|
|
|
804 Putting this call here avoids all that crud.
|
|
|
805
|
|
|
806 The EQ test avoids infinite recursion. */
|
|
|
807 if (! NILP (default_directory) && !EQ (default_directory, name)
|
|
|
808 /* Save time in some common cases - as long as default_directory
|
|
|
809 is not relative, it can be canonicalized with name below (if it
|
|
|
810 is needed at all) without requiring it to be expanded now. */
|
|
442
|
811 #ifdef WIN32_NATIVE
|
|
|
812 /* Detect Windows file names with drive specifiers. */
|
|
428
|
813 && ! (IS_DRIVE (o[0]) && (IS_DEVICE_SEP (o[1]) && IS_DIRECTORY_SEP (o[2])))
|
|
|
814 /* Detect Windows file names in UNC format. */
|
|
|
815 && ! (IS_DIRECTORY_SEP (o[0]) && IS_DIRECTORY_SEP (o[1]))
|
|
|
816
|
|
442
|
817 #else /* not WIN32_NATIVE */
|
|
428
|
818
|
|
|
819 /* Detect Unix absolute file names (/... alone is not absolute on
|
|
442
|
820 Windows). */
|
|
428
|
821 && ! (IS_DIRECTORY_SEP (o[0]))
|
|
442
|
822 #endif /* not WIN32_NATIVE */
|
|
428
|
823 )
|
|
442
|
824
|
|
|
825 default_directory = Fexpand_file_name (default_directory, Qnil);
|
|
428
|
826
|
|
|
827 #ifdef FILE_SYSTEM_CASE
|
|
|
828 name = FILE_SYSTEM_CASE (name);
|
|
|
829 #endif
|
|
|
830
|
|
|
831 /* #### dmoore - this is ugly, clean this up. Looks like nm pointing
|
|
|
832 into name should be safe during all of this, though. */
|
|
|
833 nm = XSTRING_DATA (name);
|
|
|
834
|
|
442
|
835 #ifdef WIN32_NATIVE
|
|
428
|
836 /* We will force directory separators to be either all \ or /, so make
|
|
|
837 a local copy to modify, even if there ends up being no change. */
|
|
442
|
838 nm = strcpy ((char *)alloca (strlen ((char *)nm) + 1), (char *)nm);
|
|
428
|
839
|
|
|
840 /* Find and remove drive specifier if present; this makes nm absolute
|
|
|
841 even if the rest of the name appears to be relative. */
|
|
|
842 {
|
|
442
|
843 Bufbyte *colon = (Bufbyte *) strrchr ((char *)nm, ':');
|
|
428
|
844
|
|
|
845 if (colon)
|
|
|
846 /* Only recognize colon as part of drive specifier if there is a
|
|
|
847 single alphabetic character preceding the colon (and if the
|
|
|
848 character before the drive letter, if present, is a directory
|
|
|
849 separator); this is to support the remote system syntax used by
|
|
|
850 ange-ftp, and the "po:username" syntax for POP mailboxes. */
|
|
|
851 look_again:
|
|
|
852 if (nm == colon)
|
|
|
853 nm++;
|
|
|
854 else if (IS_DRIVE (colon[-1])
|
|
|
855 && (colon == nm + 1 || IS_DIRECTORY_SEP (colon[-2])))
|
|
|
856 {
|
|
|
857 drive = colon[-1];
|
|
|
858 nm = colon + 1;
|
|
|
859 }
|
|
|
860 else
|
|
|
861 {
|
|
|
862 while (--colon >= nm)
|
|
|
863 if (colon[0] == ':')
|
|
|
864 goto look_again;
|
|
|
865 }
|
|
|
866 }
|
|
|
867
|
|
|
868 /* If we see "c://somedir", we want to strip the first slash after the
|
|
|
869 colon when stripping the drive letter. Otherwise, this expands to
|
|
|
870 "//somedir". */
|
|
|
871 if (drive && IS_DIRECTORY_SEP (nm[0]) && IS_DIRECTORY_SEP (nm[1]))
|
|
|
872 nm++;
|
|
442
|
873 #endif /* WIN32_NATIVE */
|
|
428
|
874
|
|
|
875 /* If nm is absolute, look for /./ or /../ sequences; if none are
|
|
|
876 found, we can probably return right away. We will avoid allocating
|
|
|
877 a new string if name is already fully expanded. */
|
|
|
878 if (
|
|
|
879 IS_DIRECTORY_SEP (nm[0])
|
|
442
|
880 #ifdef WIN32_NATIVE
|
|
428
|
881 && (drive || IS_DIRECTORY_SEP (nm[1]))
|
|
|
882 #endif
|
|
|
883 )
|
|
|
884 {
|
|
|
885 /* If it turns out that the filename we want to return is just a
|
|
|
886 suffix of FILENAME, we don't need to go through and edit
|
|
|
887 things; we just need to construct a new string using data
|
|
|
888 starting at the middle of FILENAME. If we set lose to a
|
|
|
889 non-zero value, that means we've discovered that we can't do
|
|
|
890 that cool trick. */
|
|
|
891 int lose = 0;
|
|
|
892
|
|
|
893 p = nm;
|
|
|
894 while (*p)
|
|
|
895 {
|
|
|
896 /* Since we know the name is absolute, we can assume that each
|
|
|
897 element starts with a "/". */
|
|
|
898
|
|
|
899 /* "." and ".." are hairy. */
|
|
|
900 if (IS_DIRECTORY_SEP (p[0])
|
|
|
901 && p[1] == '.'
|
|
|
902 && (IS_DIRECTORY_SEP (p[2])
|
|
|
903 || p[2] == 0
|
|
|
904 || (p[2] == '.' && (IS_DIRECTORY_SEP (p[3])
|
|
|
905 || p[3] == 0))))
|
|
|
906 lose = 1;
|
|
|
907 p++;
|
|
|
908 }
|
|
|
909 if (!lose)
|
|
|
910 {
|
|
442
|
911 #ifdef WIN32_NATIVE
|
|
428
|
912 /* Make sure directories are all separated with / or \ as
|
|
|
913 desired, but avoid allocation of a new string when not
|
|
|
914 required. */
|
|
|
915 CORRECT_DIR_SEPS (nm);
|
|
|
916 if (IS_DIRECTORY_SEP (nm[1]))
|
|
|
917 {
|
|
|
918 if (strcmp (nm, XSTRING_DATA (name)) != 0)
|
|
|
919 name = build_string (nm);
|
|
|
920 }
|
|
|
921 /* drive must be set, so this is okay */
|
|
|
922 else if (strcmp (nm - 2, XSTRING_DATA (name)) != 0)
|
|
|
923 {
|
|
|
924 name = make_string (nm - 2, p - nm + 2);
|
|
|
925 XSTRING_DATA (name)[0] = DRIVE_LETTER (drive);
|
|
|
926 XSTRING_DATA (name)[1] = ':';
|
|
|
927 }
|
|
442
|
928 RETURN_UNGCPRO (name);
|
|
|
929 #else /* not WIN32_NATIVE */
|
|
428
|
930 if (nm == XSTRING_DATA (name))
|
|
442
|
931 RETURN_UNGCPRO (name);
|
|
|
932 RETURN_UNGCPRO (build_string ((char *) nm));
|
|
|
933 #endif /* not WIN32_NATIVE */
|
|
428
|
934 }
|
|
|
935 }
|
|
|
936
|
|
|
937 /* At this point, nm might or might not be an absolute file name. We
|
|
|
938 need to expand ~ or ~user if present, otherwise prefix nm with
|
|
|
939 default_directory if nm is not absolute, and finally collapse /./
|
|
|
940 and /foo/../ sequences.
|
|
|
941
|
|
|
942 We set newdir to be the appropriate prefix if one is needed:
|
|
|
943 - the relevant user directory if nm starts with ~ or ~user
|
|
|
944 - the specified drive's working dir (DOS/NT only) if nm does not
|
|
|
945 start with /
|
|
|
946 - the value of default_directory.
|
|
|
947
|
|
|
948 Note that these prefixes are not guaranteed to be absolute (except
|
|
|
949 for the working dir of a drive). Therefore, to ensure we always
|
|
|
950 return an absolute name, if the final prefix is not absolute we
|
|
|
951 append it to the current working directory. */
|
|
|
952
|
|
|
953 newdir = 0;
|
|
|
954
|
|
|
955 if (nm[0] == '~') /* prefix ~ */
|
|
|
956 {
|
|
|
957 if (IS_DIRECTORY_SEP (nm[1])
|
|
|
958 || nm[1] == 0) /* ~ by itself */
|
|
|
959 {
|
|
440
|
960 Extbyte *newdir_external = get_home_directory ();
|
|
428
|
961
|
|
|
962 if (newdir_external == NULL)
|
|
|
963 newdir = (Bufbyte *) "";
|
|
|
964 else
|
|
440
|
965 TO_INTERNAL_FORMAT (C_STRING, newdir_external,
|
|
|
966 C_STRING_ALLOCA, (* ((char **) &newdir)),
|
|
|
967 Qfile_name);
|
|
428
|
968
|
|
|
969 nm++;
|
|
442
|
970 #ifdef WIN32_NATIVE
|
|
428
|
971 collapse_newdir = 0;
|
|
|
972 #endif
|
|
|
973 }
|
|
|
974 else /* ~user/filename */
|
|
|
975 {
|
|
|
976 for (p = nm; *p && (!IS_DIRECTORY_SEP (*p)); p++)
|
|
|
977 DO_NOTHING;
|
|
|
978 o = (Bufbyte *) alloca (p - nm + 1);
|
|
|
979 memcpy (o, (char *) nm, p - nm);
|
|
|
980 o [p - nm] = 0;
|
|
|
981
|
|
|
982 /* #### marcpa's syncing note: FSF uses getpwnam even on NT,
|
|
|
983 which does not work. The following works only if ~USER
|
|
|
984 names the user who runs this instance of XEmacs. While
|
|
|
985 NT is single-user (for the moment) you still can have
|
|
|
986 multiple user profiles users defined, each with its HOME.
|
|
|
987 Therefore, the following should be reworked to handle
|
|
|
988 this case. */
|
|
442
|
989 #ifdef WIN32_NATIVE
|
|
428
|
990 /* Now if the file given is "~foo/file" and HOME="c:/", then
|
|
|
991 we want the file to be named "c:/file" ("~foo" becomes
|
|
|
992 "c:/"). The variable o has "~foo", so we can use the
|
|
|
993 length of that string to offset nm. August Hill, 31 Aug
|
|
|
994 1998. */
|
|
|
995 newdir = (Bufbyte *) get_home_directory();
|
|
|
996 dostounix_filename (newdir);
|
|
|
997 nm += strlen(o) + 1;
|
|
442
|
998 #else /* not WIN32_NATIVE */
|
|
|
999 #ifdef CYGWIN
|
|
428
|
1000 if ((user = user_login_name (NULL)) != NULL)
|
|
|
1001 {
|
|
|
1002 /* Does the user login name match the ~name? */
|
|
|
1003 if (strcmp (user, (char *) o + 1) == 0)
|
|
|
1004 {
|
|
|
1005 newdir = (Bufbyte *) get_home_directory();
|
|
|
1006 nm = p;
|
|
|
1007 }
|
|
|
1008 }
|
|
|
1009 if (! newdir)
|
|
|
1010 {
|
|
442
|
1011 #endif /* CYGWIN */
|
|
428
|
1012 /* Jamie reports that getpwnam() can get wedged by SIGIO/SIGALARM
|
|
|
1013 occurring in it. (It can call select()). */
|
|
|
1014 slow_down_interrupts ();
|
|
|
1015 pw = (struct passwd *) getpwnam ((char *) o + 1);
|
|
|
1016 speed_up_interrupts ();
|
|
|
1017 if (pw)
|
|
|
1018 {
|
|
|
1019 newdir = (Bufbyte *) pw -> pw_dir;
|
|
|
1020 nm = p;
|
|
|
1021 }
|
|
442
|
1022 #ifdef CYGWIN
|
|
428
|
1023 }
|
|
|
1024 #endif
|
|
442
|
1025 #endif /* not WIN32_NATIVE */
|
|
428
|
1026
|
|
|
1027 /* If we don't find a user of that name, leave the name
|
|
|
1028 unchanged; don't move nm forward to p. */
|
|
|
1029 }
|
|
|
1030 }
|
|
|
1031
|
|
442
|
1032 #ifdef WIN32_NATIVE
|
|
428
|
1033 /* On DOS and Windows, nm is absolute if a drive name was specified;
|
|
|
1034 use the drive's current directory as the prefix if needed. */
|
|
|
1035 if (!newdir && drive)
|
|
|
1036 {
|
|
|
1037 /* Get default directory if needed to make nm absolute. */
|
|
|
1038 if (!IS_DIRECTORY_SEP (nm[0]))
|
|
|
1039 {
|
|
|
1040 newdir = alloca (MAXPATHLEN + 1);
|
|
442
|
1041 if (!_getdcwd (toupper (drive) - 'A' + 1, newdir, MAXPATHLEN))
|
|
428
|
1042 newdir = NULL;
|
|
|
1043 }
|
|
|
1044 if (!newdir)
|
|
|
1045 {
|
|
|
1046 /* Either nm starts with /, or drive isn't mounted. */
|
|
|
1047 newdir = alloca (4);
|
|
|
1048 newdir[0] = DRIVE_LETTER (drive);
|
|
|
1049 newdir[1] = ':';
|
|
|
1050 newdir[2] = '/';
|
|
|
1051 newdir[3] = 0;
|
|
|
1052 }
|
|
|
1053 }
|
|
442
|
1054 #endif /* WIN32_NATIVE */
|
|
428
|
1055
|
|
|
1056 /* Finally, if no prefix has been specified and nm is not absolute,
|
|
|
1057 then it must be expanded relative to default_directory. */
|
|
|
1058
|
|
|
1059 if (1
|
|
442
|
1060 #ifndef WIN32_NATIVE
|
|
428
|
1061 /* /... alone is not absolute on DOS and Windows. */
|
|
|
1062 && !IS_DIRECTORY_SEP (nm[0])
|
|
|
1063 #else
|
|
|
1064 && !(IS_DIRECTORY_SEP (nm[0]) && IS_DIRECTORY_SEP (nm[1]))
|
|
|
1065 #endif
|
|
|
1066 && !newdir)
|
|
|
1067 {
|
|
|
1068 newdir = XSTRING_DATA (default_directory);
|
|
|
1069 }
|
|
|
1070
|
|
442
|
1071 #ifdef WIN32_NATIVE
|
|
428
|
1072 if (newdir)
|
|
|
1073 {
|
|
|
1074 /* First ensure newdir is an absolute name. */
|
|
|
1075 if (
|
|
442
|
1076 /* Detect Windows file names with drive specifiers. */
|
|
428
|
1077 ! (IS_DRIVE (newdir[0])
|
|
|
1078 && IS_DEVICE_SEP (newdir[1]) && IS_DIRECTORY_SEP (newdir[2]))
|
|
|
1079 /* Detect Windows file names in UNC format. */
|
|
|
1080 && ! (IS_DIRECTORY_SEP (newdir[0]) && IS_DIRECTORY_SEP (newdir[1]))
|
|
|
1081 /* Detect drive spec by itself */
|
|
|
1082 && ! (IS_DEVICE_SEP (newdir[1]) && newdir[2] == 0)
|
|
|
1083 )
|
|
|
1084 {
|
|
|
1085 /* Effectively, let newdir be (expand-file-name newdir cwd).
|
|
|
1086 Because of the admonition against calling expand-file-name
|
|
|
1087 when we have pointers into lisp strings, we accomplish this
|
|
|
1088 indirectly by prepending newdir to nm if necessary, and using
|
|
|
1089 cwd (or the wd of newdir's drive) as the new newdir. */
|
|
|
1090
|
|
|
1091 if (IS_DRIVE (newdir[0]) && newdir[1] == ':')
|
|
|
1092 {
|
|
|
1093 drive = newdir[0];
|
|
|
1094 newdir += 2;
|
|
|
1095 }
|
|
|
1096 if (!IS_DIRECTORY_SEP (nm[0]))
|
|
|
1097 {
|
|
|
1098 char * tmp = alloca (strlen (newdir) + strlen (nm) + 2);
|
|
|
1099 file_name_as_directory (tmp, newdir);
|
|
|
1100 strcat (tmp, nm);
|
|
|
1101 nm = tmp;
|
|
|
1102 }
|
|
|
1103 newdir = alloca (MAXPATHLEN + 1);
|
|
|
1104 if (drive)
|
|
|
1105 {
|
|
442
|
1106 if (!_getdcwd (toupper (drive) - 'A' + 1, newdir, MAXPATHLEN))
|
|
428
|
1107 newdir = "/";
|
|
|
1108 }
|
|
|
1109 else
|
|
|
1110 getwd (newdir);
|
|
|
1111 }
|
|
|
1112
|
|
|
1113 /* Strip off drive name from prefix, if present. */
|
|
|
1114 if (IS_DRIVE (newdir[0]) && newdir[1] == ':')
|
|
|
1115 {
|
|
|
1116 drive = newdir[0];
|
|
|
1117 newdir += 2;
|
|
|
1118 }
|
|
|
1119
|
|
|
1120 /* Keep only a prefix from newdir if nm starts with slash
|
|
|
1121 (/ /server/share for UNC, nothing otherwise). */
|
|
|
1122 if (IS_DIRECTORY_SEP (nm[0]) && collapse_newdir)
|
|
|
1123 {
|
|
|
1124 if (IS_DIRECTORY_SEP (newdir[0]) && IS_DIRECTORY_SEP (newdir[1]))
|
|
|
1125 {
|
|
|
1126 newdir = strcpy (alloca (strlen (newdir) + 1), newdir);
|
|
|
1127 p = newdir + 2;
|
|
|
1128 while (*p && !IS_DIRECTORY_SEP (*p)) p++;
|
|
|
1129 p++;
|
|
|
1130 while (*p && !IS_DIRECTORY_SEP (*p)) p++;
|
|
|
1131 *p = 0;
|
|
|
1132 }
|
|
|
1133 else
|
|
|
1134 newdir = "";
|
|
|
1135 }
|
|
|
1136 }
|
|
442
|
1137 #endif /* WIN32_NATIVE */
|
|
428
|
1138
|
|
|
1139 if (newdir)
|
|
|
1140 {
|
|
|
1141 /* Get rid of any slash at the end of newdir, unless newdir is
|
|
|
1142 just // (an incomplete UNC name). */
|
|
|
1143 length = strlen ((char *) newdir);
|
|
|
1144 if (length > 1 && IS_DIRECTORY_SEP (newdir[length - 1])
|
|
442
|
1145 #ifdef WIN32_NATIVE
|
|
428
|
1146 && !(length == 2 && IS_DIRECTORY_SEP (newdir[0]))
|
|
|
1147 #endif
|
|
|
1148 )
|
|
|
1149 {
|
|
|
1150 Bufbyte *temp = (Bufbyte *) alloca (length);
|
|
|
1151 memcpy (temp, newdir, length - 1);
|
|
|
1152 temp[length - 1] = 0;
|
|
|
1153 newdir = temp;
|
|
|
1154 }
|
|
|
1155 tlen = length + 1;
|
|
|
1156 }
|
|
|
1157 else
|
|
|
1158 tlen = 0;
|
|
|
1159
|
|
|
1160 /* Now concatenate the directory and name to new space in the stack frame */
|
|
|
1161 tlen += strlen ((char *) nm) + 1;
|
|
442
|
1162 #ifdef WIN32_NATIVE
|
|
428
|
1163 /* Add reserved space for drive name. (The Microsoft x86 compiler
|
|
|
1164 produces incorrect code if the following two lines are combined.) */
|
|
|
1165 target = (Bufbyte *) alloca (tlen + 2);
|
|
|
1166 target += 2;
|
|
442
|
1167 #else /* not WIN32_NATIVE */
|
|
428
|
1168 target = (Bufbyte *) alloca (tlen);
|
|
442
|
1169 #endif /* not WIN32_NATIVE */
|
|
428
|
1170 *target = 0;
|
|
|
1171
|
|
|
1172 if (newdir)
|
|
|
1173 {
|
|
|
1174 if (nm[0] == 0 || IS_DIRECTORY_SEP (nm[0]))
|
|
|
1175 strcpy ((char *) target, (char *) newdir);
|
|
|
1176 else
|
|
|
1177 file_name_as_directory ((char *) target, (char *) newdir);
|
|
|
1178 }
|
|
|
1179
|
|
|
1180 strcat ((char *) target, (char *) nm);
|
|
|
1181
|
|
|
1182 /* ASSERT (IS_DIRECTORY_SEP (target[0])) if not VMS */
|
|
|
1183
|
|
|
1184 /* Now canonicalize by removing /. and /foo/.. if they appear. */
|
|
|
1185
|
|
|
1186 p = target;
|
|
|
1187 o = target;
|
|
|
1188
|
|
|
1189 while (*p)
|
|
|
1190 {
|
|
|
1191 if (!IS_DIRECTORY_SEP (*p))
|
|
|
1192 {
|
|
|
1193 *o++ = *p++;
|
|
|
1194 }
|
|
|
1195 else if (IS_DIRECTORY_SEP (p[0])
|
|
|
1196 && p[1] == '.'
|
|
|
1197 && (IS_DIRECTORY_SEP (p[2])
|
|
|
1198 || p[2] == 0))
|
|
|
1199 {
|
|
|
1200 /* If "/." is the entire filename, keep the "/". Otherwise,
|
|
|
1201 just delete the whole "/.". */
|
|
|
1202 if (o == target && p[2] == '\0')
|
|
|
1203 *o++ = *p;
|
|
|
1204 p += 2;
|
|
|
1205 }
|
|
|
1206 else if (IS_DIRECTORY_SEP (p[0]) && p[1] == '.' && p[2] == '.'
|
|
|
1207 /* `/../' is the "superroot" on certain file systems. */
|
|
|
1208 && o != target
|
|
|
1209 && (IS_DIRECTORY_SEP (p[3]) || p[3] == 0))
|
|
|
1210 {
|
|
|
1211 while (o != target && (--o) && !IS_DIRECTORY_SEP (*o))
|
|
|
1212 ;
|
|
|
1213 /* Keep initial / only if this is the whole name. */
|
|
|
1214 if (o == target && IS_ANY_SEP (*o) && p[3] == 0)
|
|
|
1215 ++o;
|
|
|
1216 p += 3;
|
|
|
1217 }
|
|
442
|
1218 #ifdef WIN32_NATIVE
|
|
428
|
1219 /* if drive is set, we're not dealing with an UNC, so
|
|
|
1220 multiple dir-seps are redundant (and reportedly cause trouble
|
|
|
1221 under win95) */
|
|
|
1222 else if (drive && IS_DIRECTORY_SEP (p[0]) && IS_DIRECTORY_SEP (p[1]))
|
|
|
1223 ++p;
|
|
|
1224 #endif
|
|
|
1225 else
|
|
|
1226 {
|
|
|
1227 *o++ = *p++;
|
|
|
1228 }
|
|
|
1229 }
|
|
|
1230
|
|
442
|
1231 #ifdef WIN32_NATIVE
|
|
428
|
1232 /* At last, set drive name, except for network file name. */
|
|
|
1233 if (drive)
|
|
|
1234 {
|
|
|
1235 target -= 2;
|
|
|
1236 target[0] = DRIVE_LETTER (drive);
|
|
|
1237 target[1] = ':';
|
|
|
1238 }
|
|
|
1239 else
|
|
|
1240 {
|
|
|
1241 assert (IS_DIRECTORY_SEP (target[0]) && IS_DIRECTORY_SEP (target[1]));
|
|
|
1242 }
|
|
|
1243 CORRECT_DIR_SEPS (target);
|
|
442
|
1244 #endif /* WIN32_NATIVE */
|
|
|
1245
|
|
|
1246 RETURN_UNGCPRO (make_string (target, o - target));
|
|
428
|
1247 }
|
|
|
1248
|
|
|
1249 DEFUN ("file-truename", Ffile_truename, 1, 2, 0, /*
|
|
|
1250 Return the canonical name of the given FILE.
|
|
|
1251 Second arg DEFAULT is directory to start with if FILE is relative
|
|
|
1252 (does not start with slash); if DEFAULT is nil or missing,
|
|
|
1253 the current buffer's value of default-directory is used.
|
|
|
1254 No component of the resulting pathname will be a symbolic link, as
|
|
|
1255 in the realpath() function.
|
|
|
1256 */
|
|
|
1257 (filename, default_))
|
|
|
1258 {
|
|
442
|
1259 /* This function can GC. GC checked 2000-07-28 ben. */
|
|
428
|
1260 Lisp_Object expanded_name;
|
|
|
1261 struct gcpro gcpro1;
|
|
|
1262
|
|
|
1263 CHECK_STRING (filename);
|
|
|
1264
|
|
|
1265 expanded_name = Fexpand_file_name (filename, default_);
|
|
|
1266
|
|
|
1267 if (!STRINGP (expanded_name))
|
|
|
1268 return Qnil;
|
|
|
1269
|
|
|
1270 GCPRO1 (expanded_name);
|
|
442
|
1271
|
|
|
1272 {
|
|
|
1273 Lisp_Object handler =
|
|
|
1274 Ffind_file_name_handler (expanded_name, Qfile_truename);
|
|
|
1275
|
|
|
1276 if (!NILP (handler))
|
|
|
1277 RETURN_UNGCPRO
|
|
|
1278 (call2_check_string (handler, Qfile_truename, expanded_name));
|
|
|
1279 }
|
|
428
|
1280
|
|
|
1281 {
|
|
|
1282 char resolved_path[MAXPATHLEN];
|
|
|
1283 Extbyte *path;
|
|
|
1284 Extbyte *p;
|
|
440
|
1285 Extcount elen;
|
|
|
1286
|
|
|
1287 TO_EXTERNAL_FORMAT (LISP_STRING, expanded_name,
|
|
|
1288 ALLOCA, (path, elen),
|
|
|
1289 Qfile_name);
|
|
428
|
1290 p = path;
|
|
|
1291 if (elen > MAXPATHLEN)
|
|
|
1292 goto toolong;
|
|
442
|
1293
|
|
428
|
1294 /* Try doing it all at once. */
|
|
|
1295 /* !! Does realpath() Mule-encapsulate?
|
|
|
1296 Answer: Nope! So we do it above */
|
|
|
1297 if (!xrealpath ((char *) path, resolved_path))
|
|
|
1298 {
|
|
|
1299 /* Didn't resolve it -- have to do it one component at a time. */
|
|
|
1300 /* "realpath" is a typically useless, stupid un*x piece of crap.
|
|
|
1301 It claims to return a useful value in the "error" case, but since
|
|
|
1302 there is no indication provided of how far along the pathname
|
|
|
1303 the function went before erring, there is no way to use the
|
|
442
|
1304 partial result returned. What a piece of junk.
|
|
|
1305
|
|
|
1306 The above comment refers to historical versions of
|
|
|
1307 realpath(). The Unix98 specs state:
|
|
|
1308
|
|
|
1309 "On successful completion, realpath() returns a
|
|
|
1310 pointer to the resolved name. Otherwise, realpath()
|
|
|
1311 returns a null pointer and sets errno to indicate the
|
|
|
1312 error, and the contents of the buffer pointed to by
|
|
|
1313 resolved_name are undefined."
|
|
|
1314
|
|
|
1315 Since we depend on undocumented semantics of various system realpath()s,
|
|
|
1316 we just use our own version in realpath.c. */
|
|
428
|
1317 for (;;)
|
|
|
1318 {
|
|
|
1319 p = (Extbyte *) memchr (p + 1, '/', elen - (p + 1 - path));
|
|
|
1320 if (p)
|
|
|
1321 *p = 0;
|
|
|
1322
|
|
|
1323 if (xrealpath ((char *) path, resolved_path))
|
|
|
1324 {
|
|
|
1325 if (p)
|
|
|
1326 *p = '/';
|
|
|
1327 else
|
|
|
1328 break;
|
|
|
1329
|
|
|
1330 }
|
|
|
1331 else if (errno == ENOENT || errno == EACCES)
|
|
|
1332 {
|
|
|
1333 /* Failed on this component. Just tack on the rest of
|
|
|
1334 the string and we are done. */
|
|
|
1335 int rlen = strlen (resolved_path);
|
|
|
1336
|
|
|
1337 /* "On failure, it returns NULL, sets errno to indicate
|
|
|
1338 the error, and places in resolved_path the absolute pathname
|
|
|
1339 of the path component which could not be resolved." */
|
|
442
|
1340
|
|
|
1341 if (p)
|
|
428
|
1342 {
|
|
|
1343 int plen = elen - (p - path);
|
|
|
1344
|
|
|
1345 if (rlen > 1 && resolved_path[rlen - 1] == '/')
|
|
|
1346 rlen = rlen - 1;
|
|
|
1347
|
|
|
1348 if (plen + rlen + 1 > countof (resolved_path))
|
|
|
1349 goto toolong;
|
|
|
1350
|
|
|
1351 resolved_path[rlen] = '/';
|
|
|
1352 memcpy (resolved_path + rlen + 1, p + 1, plen + 1 - 1);
|
|
|
1353 }
|
|
|
1354 break;
|
|
|
1355 }
|
|
|
1356 else
|
|
|
1357 goto lose;
|
|
|
1358 }
|
|
|
1359 }
|
|
|
1360
|
|
|
1361 {
|
|
442
|
1362 Lisp_Object resolved_name;
|
|
428
|
1363 int rlen = strlen (resolved_path);
|
|
|
1364 if (elen > 0 && XSTRING_BYTE (expanded_name, elen - 1) == '/'
|
|
|
1365 && !(rlen > 0 && resolved_path[rlen - 1] == '/'))
|
|
|
1366 {
|
|
|
1367 if (rlen + 1 > countof (resolved_path))
|
|
|
1368 goto toolong;
|
|
442
|
1369 resolved_path[rlen++] = '/';
|
|
|
1370 resolved_path[rlen] = '\0';
|
|
428
|
1371 }
|
|
442
|
1372 TO_INTERNAL_FORMAT (DATA, (resolved_path, rlen),
|
|
|
1373 LISP_STRING, resolved_name,
|
|
|
1374 Qfile_name);
|
|
|
1375 RETURN_UNGCPRO (resolved_name);
|
|
428
|
1376 }
|
|
|
1377
|
|
|
1378 toolong:
|
|
|
1379 errno = ENAMETOOLONG;
|
|
|
1380 goto lose;
|
|
|
1381 lose:
|
|
|
1382 report_file_error ("Finding truename", list1 (expanded_name));
|
|
|
1383 }
|
|
442
|
1384 RETURN_UNGCPRO (Qnil);
|
|
428
|
1385 }
|
|
|
1386
|
|
|
1387
|
|
|
1388 DEFUN ("substitute-in-file-name", Fsubstitute_in_file_name, 1, 1, 0, /*
|
|
|
1389 Substitute environment variables referred to in FILENAME.
|
|
|
1390 `$FOO' where FOO is an environment variable name means to substitute
|
|
|
1391 the value of that variable. The variable name should be terminated
|
|
|
1392 with a character not a letter, digit or underscore; otherwise, enclose
|
|
|
1393 the entire variable name in braces.
|
|
|
1394 If `/~' appears, all of FILENAME through that `/' is discarded.
|
|
|
1395
|
|
|
1396 */
|
|
|
1397 (string))
|
|
|
1398 {
|
|
442
|
1399 /* This function can GC. GC checked 2000-07-28 ben. */
|
|
428
|
1400 Bufbyte *nm;
|
|
|
1401
|
|
|
1402 Bufbyte *s, *p, *o, *x, *endp;
|
|
|
1403 Bufbyte *target = 0;
|
|
|
1404 int total = 0;
|
|
|
1405 int substituted = 0;
|
|
|
1406 Bufbyte *xnm;
|
|
|
1407 Lisp_Object handler;
|
|
|
1408
|
|
|
1409 CHECK_STRING (string);
|
|
|
1410
|
|
|
1411 /* If the file name has special constructs in it,
|
|
|
1412 call the corresponding file handler. */
|
|
|
1413 handler = Ffind_file_name_handler (string, Qsubstitute_in_file_name);
|
|
|
1414 if (!NILP (handler))
|
|
|
1415 return call2_check_string_or_nil (handler, Qsubstitute_in_file_name,
|
|
|
1416 string);
|
|
|
1417
|
|
|
1418 nm = XSTRING_DATA (string);
|
|
|
1419 endp = nm + XSTRING_LENGTH (string);
|
|
|
1420
|
|
|
1421 /* If /~ or // appears, discard everything through first slash. */
|
|
|
1422
|
|
|
1423 for (p = nm; p != endp; p++)
|
|
|
1424 {
|
|
|
1425 if ((p[0] == '~'
|
|
442
|
1426 #if defined (WIN32_NATIVE) || defined (CYGWIN)
|
|
440
|
1427 /* // at start of file name is meaningful in WindowsNT systems */
|
|
428
|
1428 || (IS_DIRECTORY_SEP (p[0]) && p - 1 != nm)
|
|
442
|
1429 #else /* not (WIN32_NATIVE || CYGWIN) */
|
|
428
|
1430 || IS_DIRECTORY_SEP (p[0])
|
|
442
|
1431 #endif /* not (WIN32_NATIVE || CYGWIN) */
|
|
428
|
1432 )
|
|
|
1433 && p != nm
|
|
|
1434 && (IS_DIRECTORY_SEP (p[-1])))
|
|
|
1435 {
|
|
|
1436 nm = p;
|
|
|
1437 substituted = 1;
|
|
|
1438 }
|
|
442
|
1439 #ifdef WIN32_NATIVE
|
|
428
|
1440 /* see comment in expand-file-name about drive specifiers */
|
|
|
1441 else if (IS_DRIVE (p[0]) && p[1] == ':'
|
|
|
1442 && p > nm && IS_DIRECTORY_SEP (p[-1]))
|
|
|
1443 {
|
|
|
1444 nm = p;
|
|
|
1445 substituted = 1;
|
|
|
1446 }
|
|
442
|
1447 #endif /* WIN32_NATIVE */
|
|
428
|
1448 }
|
|
|
1449
|
|
|
1450 /* See if any variables are substituted into the string
|
|
|
1451 and find the total length of their values in `total' */
|
|
|
1452
|
|
|
1453 for (p = nm; p != endp;)
|
|
|
1454 if (*p != '$')
|
|
|
1455 p++;
|
|
|
1456 else
|
|
|
1457 {
|
|
|
1458 p++;
|
|
|
1459 if (p == endp)
|
|
|
1460 goto badsubst;
|
|
|
1461 else if (*p == '$')
|
|
|
1462 {
|
|
|
1463 /* "$$" means a single "$" */
|
|
|
1464 p++;
|
|
|
1465 total -= 1;
|
|
|
1466 substituted = 1;
|
|
|
1467 continue;
|
|
|
1468 }
|
|
|
1469 else if (*p == '{')
|
|
|
1470 {
|
|
|
1471 o = ++p;
|
|
|
1472 while (p != endp && *p != '}') p++;
|
|
|
1473 if (*p != '}') goto missingclose;
|
|
|
1474 s = p;
|
|
|
1475 }
|
|
|
1476 else
|
|
|
1477 {
|
|
|
1478 o = p;
|
|
|
1479 while (p != endp && (isalnum (*p) || *p == '_')) p++;
|
|
|
1480 s = p;
|
|
|
1481 }
|
|
|
1482
|
|
|
1483 /* Copy out the variable name */
|
|
|
1484 target = (Bufbyte *) alloca (s - o + 1);
|
|
|
1485 strncpy ((char *) target, (char *) o, s - o);
|
|
|
1486 target[s - o] = 0;
|
|
442
|
1487 #ifdef WIN32_NATIVE
|
|
428
|
1488 strupr (target); /* $home == $HOME etc. */
|
|
442
|
1489 #endif /* WIN32_NATIVE */
|
|
428
|
1490
|
|
|
1491 /* Get variable value */
|
|
|
1492 o = (Bufbyte *) egetenv ((char *) target);
|
|
|
1493 if (!o) goto badvar;
|
|
|
1494 total += strlen ((char *) o);
|
|
|
1495 substituted = 1;
|
|
|
1496 }
|
|
|
1497
|
|
|
1498 if (!substituted)
|
|
|
1499 return string;
|
|
|
1500
|
|
|
1501 /* If substitution required, recopy the string and do it */
|
|
|
1502 /* Make space in stack frame for the new copy */
|
|
|
1503 xnm = (Bufbyte *) alloca (XSTRING_LENGTH (string) + total + 1);
|
|
|
1504 x = xnm;
|
|
|
1505
|
|
|
1506 /* Copy the rest of the name through, replacing $ constructs with values */
|
|
|
1507 for (p = nm; *p;)
|
|
|
1508 if (*p != '$')
|
|
|
1509 *x++ = *p++;
|
|
|
1510 else
|
|
|
1511 {
|
|
|
1512 p++;
|
|
|
1513 if (p == endp)
|
|
|
1514 goto badsubst;
|
|
|
1515 else if (*p == '$')
|
|
|
1516 {
|
|
|
1517 *x++ = *p++;
|
|
|
1518 continue;
|
|
|
1519 }
|
|
|
1520 else if (*p == '{')
|
|
|
1521 {
|
|
|
1522 o = ++p;
|
|
|
1523 while (p != endp && *p != '}') p++;
|
|
|
1524 if (*p != '}') goto missingclose;
|
|
|
1525 s = p++;
|
|
|
1526 }
|
|
|
1527 else
|
|
|
1528 {
|
|
|
1529 o = p;
|
|
|
1530 while (p != endp && (isalnum (*p) || *p == '_')) p++;
|
|
|
1531 s = p;
|
|
|
1532 }
|
|
|
1533
|
|
|
1534 /* Copy out the variable name */
|
|
|
1535 target = (Bufbyte *) alloca (s - o + 1);
|
|
|
1536 strncpy ((char *) target, (char *) o, s - o);
|
|
|
1537 target[s - o] = 0;
|
|
442
|
1538 #ifdef WIN32_NATIVE
|
|
428
|
1539 strupr (target); /* $home == $HOME etc. */
|
|
442
|
1540 #endif /* WIN32_NATIVE */
|
|
428
|
1541
|
|
|
1542 /* Get variable value */
|
|
|
1543 o = (Bufbyte *) egetenv ((char *) target);
|
|
|
1544 if (!o)
|
|
|
1545 goto badvar;
|
|
|
1546
|
|
|
1547 strcpy ((char *) x, (char *) o);
|
|
|
1548 x += strlen ((char *) o);
|
|
|
1549 }
|
|
|
1550
|
|
|
1551 *x = 0;
|
|
|
1552
|
|
|
1553 /* If /~ or // appears, discard everything through first slash. */
|
|
|
1554
|
|
|
1555 for (p = xnm; p != x; p++)
|
|
|
1556 if ((p[0] == '~'
|
|
442
|
1557 #if defined (WIN32_NATIVE)
|
|
428
|
1558 || (IS_DIRECTORY_SEP (p[0]) && p - 1 != xnm)
|
|
442
|
1559 #else /* not WIN32_NATIVE */
|
|
428
|
1560 || IS_DIRECTORY_SEP (p[0])
|
|
442
|
1561 #endif /* not WIN32_NATIVE */
|
|
428
|
1562 )
|
|
|
1563 /* don't do p[-1] if that would go off the beginning --jwz */
|
|
|
1564 && p != nm && p > xnm && IS_DIRECTORY_SEP (p[-1]))
|
|
|
1565 xnm = p;
|
|
442
|
1566 #ifdef WIN32_NATIVE
|
|
428
|
1567 else if (IS_DRIVE (p[0]) && p[1] == ':'
|
|
|
1568 && p > nm && IS_DIRECTORY_SEP (p[-1]))
|
|
|
1569 xnm = p;
|
|
|
1570 #endif
|
|
|
1571
|
|
|
1572 return make_string (xnm, x - xnm);
|
|
|
1573
|
|
|
1574 badsubst:
|
|
442
|
1575 syntax_error ("Bad format environment-variable substitution", string);
|
|
428
|
1576 missingclose:
|
|
442
|
1577 syntax_error ("Missing \"}\" in environment-variable substitution",
|
|
|
1578 string);
|
|
428
|
1579 badvar:
|
|
442
|
1580 syntax_error_2 ("Substituting nonexistent environment variable",
|
|
|
1581 string, build_string (target));
|
|
428
|
1582
|
|
|
1583 /* NOTREACHED */
|
|
|
1584 return Qnil; /* suppress compiler warning */
|
|
|
1585 }
|
|
|
1586
|
|
|
1587 /* A slightly faster and more convenient way to get
|
|
|
1588 (directory-file-name (expand-file-name FOO)). */
|
|
|
1589
|
|
|
1590 Lisp_Object
|
|
|
1591 expand_and_dir_to_file (Lisp_Object filename, Lisp_Object defdir)
|
|
|
1592 {
|
|
442
|
1593 /* This function can call Lisp. GC checked 2000-07-28 ben */
|
|
428
|
1594 Lisp_Object abspath;
|
|
|
1595 struct gcpro gcpro1;
|
|
|
1596
|
|
|
1597 abspath = Fexpand_file_name (filename, defdir);
|
|
|
1598 GCPRO1 (abspath);
|
|
|
1599 /* Remove final slash, if any (unless path is root).
|
|
|
1600 stat behaves differently depending! */
|
|
|
1601 if (XSTRING_LENGTH (abspath) > 1
|
|
|
1602 && IS_DIRECTORY_SEP (XSTRING_BYTE (abspath, XSTRING_LENGTH (abspath) - 1))
|
|
|
1603 && !IS_DEVICE_SEP (XSTRING_BYTE (abspath, XSTRING_LENGTH (abspath) - 2)))
|
|
|
1604 /* We cannot take shortcuts; they might be wrong for magic file names. */
|
|
|
1605 abspath = Fdirectory_file_name (abspath);
|
|
|
1606 UNGCPRO;
|
|
|
1607 return abspath;
|
|
|
1608 }
|
|
|
1609
|
|
|
1610 /* Signal an error if the file ABSNAME already exists.
|
|
|
1611 If INTERACTIVE is nonzero, ask the user whether to proceed,
|
|
|
1612 and bypass the error if the user says to go ahead.
|
|
|
1613 QUERYSTRING is a name for the action that is being considered
|
|
|
1614 to alter the file.
|
|
|
1615 *STATPTR is used to store the stat information if the file exists.
|
|
|
1616 If the file does not exist, STATPTR->st_mode is set to 0. */
|
|
|
1617
|
|
|
1618 static void
|
|
442
|
1619 barf_or_query_if_file_exists (Lisp_Object absname, const char *querystring,
|
|
428
|
1620 int interactive, struct stat *statptr)
|
|
|
1621 {
|
|
442
|
1622 /* This function can call Lisp. GC checked 2000-07-28 ben */
|
|
428
|
1623 struct stat statbuf;
|
|
|
1624
|
|
|
1625 /* stat is a good way to tell whether the file exists,
|
|
|
1626 regardless of what access permissions it has. */
|
|
442
|
1627 if (xemacs_stat ((char *) XSTRING_DATA (absname), &statbuf) >= 0)
|
|
428
|
1628 {
|
|
|
1629 Lisp_Object tem;
|
|
|
1630
|
|
|
1631 if (interactive)
|
|
|
1632 {
|
|
|
1633 Lisp_Object prompt;
|
|
|
1634 struct gcpro gcpro1;
|
|
|
1635
|
|
|
1636 prompt = emacs_doprnt_string_c
|
|
442
|
1637 ((const Bufbyte *) GETTEXT ("File %s already exists; %s anyway? "),
|
|
428
|
1638 Qnil, -1, XSTRING_DATA (absname),
|
|
|
1639 GETTEXT (querystring));
|
|
|
1640
|
|
|
1641 GCPRO1 (prompt);
|
|
|
1642 tem = call1 (Qyes_or_no_p, prompt);
|
|
|
1643 UNGCPRO;
|
|
|
1644 }
|
|
|
1645 else
|
|
|
1646 tem = Qnil;
|
|
|
1647
|
|
|
1648 if (NILP (tem))
|
|
|
1649 Fsignal (Qfile_already_exists,
|
|
|
1650 list2 (build_translated_string ("File already exists"),
|
|
|
1651 absname));
|
|
|
1652 if (statptr)
|
|
|
1653 *statptr = statbuf;
|
|
|
1654 }
|
|
|
1655 else
|
|
|
1656 {
|
|
|
1657 if (statptr)
|
|
|
1658 statptr->st_mode = 0;
|
|
|
1659 }
|
|
|
1660 return;
|
|
|
1661 }
|
|
|
1662
|
|
|
1663 DEFUN ("copy-file", Fcopy_file, 2, 4,
|
|
|
1664 "fCopy file: \nFCopy %s to file: \np\nP", /*
|
|
|
1665 Copy FILE to NEWNAME. Both args must be strings.
|
|
|
1666 Signals a `file-already-exists' error if file NEWNAME already exists,
|
|
|
1667 unless a third argument OK-IF-ALREADY-EXISTS is supplied and non-nil.
|
|
|
1668 A number as third arg means request confirmation if NEWNAME already exists.
|
|
|
1669 This is what happens in interactive use with M-x.
|
|
|
1670 Fourth arg KEEP-TIME non-nil means give the new file the same
|
|
|
1671 last-modified time as the old one. (This works on only some systems.)
|
|
|
1672 A prefix arg makes KEEP-TIME non-nil.
|
|
|
1673 */
|
|
|
1674 (filename, newname, ok_if_already_exists, keep_time))
|
|
|
1675 {
|
|
442
|
1676 /* This function can call Lisp. GC checked 2000-07-28 ben */
|
|
428
|
1677 int ifd, ofd, n;
|
|
|
1678 char buf[16 * 1024];
|
|
|
1679 struct stat st, out_st;
|
|
|
1680 Lisp_Object handler;
|
|
|
1681 int speccount = specpdl_depth ();
|
|
|
1682 struct gcpro gcpro1, gcpro2;
|
|
|
1683 /* Lisp_Object args[6]; */
|
|
|
1684 int input_file_statable_p;
|
|
|
1685
|
|
|
1686 GCPRO2 (filename, newname);
|
|
|
1687 CHECK_STRING (filename);
|
|
|
1688 CHECK_STRING (newname);
|
|
|
1689 filename = Fexpand_file_name (filename, Qnil);
|
|
|
1690 newname = Fexpand_file_name (newname, Qnil);
|
|
|
1691
|
|
|
1692 /* If the input file name has special constructs in it,
|
|
|
1693 call the corresponding file handler. */
|
|
|
1694 handler = Ffind_file_name_handler (filename, Qcopy_file);
|
|
|
1695 /* Likewise for output file name. */
|
|
|
1696 if (NILP (handler))
|
|
|
1697 handler = Ffind_file_name_handler (newname, Qcopy_file);
|
|
|
1698 if (!NILP (handler))
|
|
|
1699 {
|
|
|
1700 UNGCPRO;
|
|
|
1701 return call5 (handler, Qcopy_file, filename, newname,
|
|
|
1702 ok_if_already_exists, keep_time);
|
|
|
1703 }
|
|
|
1704
|
|
|
1705 /* When second argument is a directory, copy the file into it.
|
|
|
1706 (copy-file "foo" "bar/") == (copy-file "foo" "bar/foo")
|
|
|
1707 */
|
|
|
1708 if (!NILP (Ffile_directory_p (newname)))
|
|
|
1709 {
|
|
|
1710 Lisp_Object args[3];
|
|
|
1711 struct gcpro ngcpro1;
|
|
|
1712 int i = 1;
|
|
|
1713
|
|
|
1714 args[0] = newname;
|
|
|
1715 args[1] = Qnil; args[2] = Qnil;
|
|
|
1716 NGCPRO1 (*args);
|
|
|
1717 ngcpro1.nvars = 3;
|
|
442
|
1718 if (!IS_DIRECTORY_SEP (XSTRING_BYTE (newname,
|
|
|
1719 XSTRING_LENGTH (newname) - 1)))
|
|
|
1720
|
|
|
1721 args[i++] = Fchar_to_string (Vdirectory_sep_char);
|
|
428
|
1722 args[i++] = Ffile_name_nondirectory (filename);
|
|
|
1723 newname = Fconcat (i, args);
|
|
|
1724 NUNGCPRO;
|
|
|
1725 }
|
|
|
1726
|
|
|
1727 if (NILP (ok_if_already_exists)
|
|
|
1728 || INTP (ok_if_already_exists))
|
|
|
1729 barf_or_query_if_file_exists (newname, "copy to it",
|
|
|
1730 INTP (ok_if_already_exists), &out_st);
|
|
442
|
1731 else if (xemacs_stat ((const char *) XSTRING_DATA (newname), &out_st) < 0)
|
|
428
|
1732 out_st.st_mode = 0;
|
|
|
1733
|
|
|
1734 ifd = interruptible_open ((char *) XSTRING_DATA (filename), O_RDONLY | OPEN_BINARY, 0);
|
|
|
1735 if (ifd < 0)
|
|
|
1736 report_file_error ("Opening input file", list1 (filename));
|
|
|
1737
|
|
|
1738 record_unwind_protect (close_file_unwind, make_int (ifd));
|
|
|
1739
|
|
|
1740 /* We can only copy regular files and symbolic links. Other files are not
|
|
|
1741 copyable by us. */
|
|
|
1742 input_file_statable_p = (fstat (ifd, &st) >= 0);
|
|
|
1743
|
|
442
|
1744 #ifndef WIN32_NATIVE
|
|
428
|
1745 if (out_st.st_mode != 0
|
|
|
1746 && st.st_dev == out_st.st_dev && st.st_ino == out_st.st_ino)
|
|
|
1747 {
|
|
|
1748 errno = 0;
|
|
|
1749 report_file_error ("Input and output files are the same",
|
|
|
1750 list2 (filename, newname));
|
|
|
1751 }
|
|
|
1752 #endif
|
|
|
1753
|
|
|
1754 #if defined (S_ISREG) && defined (S_ISLNK)
|
|
|
1755 if (input_file_statable_p)
|
|
|
1756 {
|
|
|
1757 if (!(S_ISREG (st.st_mode))
|
|
|
1758 /* XEmacs: have to allow S_ISCHR in order to copy /dev/null */
|
|
|
1759 #ifdef S_ISCHR
|
|
|
1760 && !(S_ISCHR (st.st_mode))
|
|
|
1761 #endif
|
|
|
1762 && !(S_ISLNK (st.st_mode)))
|
|
|
1763 {
|
|
|
1764 #if defined (EISDIR)
|
|
|
1765 /* Get a better looking error message. */
|
|
|
1766 errno = EISDIR;
|
|
|
1767 #endif /* EISDIR */
|
|
|
1768 report_file_error ("Non-regular file", list1 (filename));
|
|
|
1769 }
|
|
|
1770 }
|
|
|
1771 #endif /* S_ISREG && S_ISLNK */
|
|
|
1772
|
|
|
1773 ofd = open( (char *) XSTRING_DATA (newname),
|
|
|
1774 O_WRONLY | O_CREAT | O_TRUNC | OPEN_BINARY, CREAT_MODE);
|
|
|
1775 if (ofd < 0)
|
|
|
1776 report_file_error ("Opening output file", list1 (newname));
|
|
|
1777
|
|
|
1778 {
|
|
|
1779 Lisp_Object ofd_locative = noseeum_cons (make_int (ofd), Qnil);
|
|
|
1780
|
|
|
1781 record_unwind_protect (close_file_unwind, ofd_locative);
|
|
|
1782
|
|
|
1783 while ((n = read_allowing_quit (ifd, buf, sizeof (buf))) > 0)
|
|
|
1784 {
|
|
|
1785 if (write_allowing_quit (ofd, buf, n) != n)
|
|
|
1786 report_file_error ("I/O error", list1 (newname));
|
|
|
1787 }
|
|
|
1788
|
|
|
1789 /* Closing the output clobbers the file times on some systems. */
|
|
|
1790 if (close (ofd) < 0)
|
|
|
1791 report_file_error ("I/O error", list1 (newname));
|
|
|
1792
|
|
|
1793 if (input_file_statable_p)
|
|
|
1794 {
|
|
442
|
1795 if (!NILP (keep_time))
|
|
|
1796 {
|
|
|
1797 EMACS_TIME atime, mtime;
|
|
|
1798 EMACS_SET_SECS_USECS (atime, st.st_atime, 0);
|
|
|
1799 EMACS_SET_SECS_USECS (mtime, st.st_mtime, 0);
|
|
|
1800 if (set_file_times ((char *) XSTRING_DATA (newname), atime,
|
|
|
1801 mtime))
|
|
|
1802 report_file_error ("I/O error", list1 (newname));
|
|
|
1803 }
|
|
|
1804 chmod ((const char *) XSTRING_DATA (newname),
|
|
|
1805 st.st_mode & 07777);
|
|
428
|
1806 }
|
|
|
1807
|
|
|
1808 /* We'll close it by hand */
|
|
|
1809 XCAR (ofd_locative) = Qnil;
|
|
|
1810
|
|
|
1811 /* Close ifd */
|
|
|
1812 unbind_to (speccount, Qnil);
|
|
|
1813 }
|
|
|
1814
|
|
|
1815 UNGCPRO;
|
|
|
1816 return Qnil;
|
|
|
1817 }
|
|
|
1818
|
|
|
1819 DEFUN ("make-directory-internal", Fmake_directory_internal, 1, 1, 0, /*
|
|
|
1820 Create a directory. One argument, a file name string.
|
|
|
1821 */
|
|
|
1822 (dirname_))
|
|
|
1823 {
|
|
|
1824 /* This function can GC. GC checked 1997.04.06. */
|
|
|
1825 char dir [MAXPATHLEN];
|
|
|
1826 Lisp_Object handler;
|
|
|
1827 struct gcpro gcpro1;
|
|
|
1828
|
|
|
1829 CHECK_STRING (dirname_);
|
|
|
1830 dirname_ = Fexpand_file_name (dirname_, Qnil);
|
|
|
1831
|
|
|
1832 GCPRO1 (dirname_);
|
|
|
1833 handler = Ffind_file_name_handler (dirname_, Qmake_directory_internal);
|
|
|
1834 UNGCPRO;
|
|
|
1835 if (!NILP (handler))
|
|
|
1836 return (call2 (handler, Qmake_directory_internal, dirname_));
|
|
|
1837
|
|
|
1838 if (XSTRING_LENGTH (dirname_) > (Bytecount) (sizeof (dir) - 1))
|
|
|
1839 {
|
|
|
1840 return Fsignal (Qfile_error,
|
|
|
1841 list3 (build_translated_string ("Creating directory"),
|
|
442
|
1842 build_translated_string ("pathname too long"),
|
|
428
|
1843 dirname_));
|
|
|
1844 }
|
|
|
1845 strncpy (dir, (char *) XSTRING_DATA (dirname_),
|
|
|
1846 XSTRING_LENGTH (dirname_) + 1);
|
|
|
1847
|
|
|
1848 if (dir [XSTRING_LENGTH (dirname_) - 1] == '/')
|
|
|
1849 dir [XSTRING_LENGTH (dirname_) - 1] = 0;
|
|
|
1850
|
|
|
1851 if (mkdir (dir, 0777) != 0)
|
|
|
1852 report_file_error ("Creating directory", list1 (dirname_));
|
|
|
1853
|
|
|
1854 return Qnil;
|
|
|
1855 }
|
|
|
1856
|
|
|
1857 DEFUN ("delete-directory", Fdelete_directory, 1, 1, "FDelete directory: ", /*
|
|
|
1858 Delete a directory. One argument, a file name or directory name string.
|
|
|
1859 */
|
|
|
1860 (dirname_))
|
|
|
1861 {
|
|
|
1862 /* This function can GC. GC checked 1997.04.06. */
|
|
|
1863 Lisp_Object handler;
|
|
|
1864 struct gcpro gcpro1;
|
|
|
1865
|
|
|
1866 CHECK_STRING (dirname_);
|
|
|
1867
|
|
|
1868 GCPRO1 (dirname_);
|
|
|
1869 dirname_ = Fexpand_file_name (dirname_, Qnil);
|
|
|
1870 dirname_ = Fdirectory_file_name (dirname_);
|
|
|
1871
|
|
|
1872 handler = Ffind_file_name_handler (dirname_, Qdelete_directory);
|
|
|
1873 UNGCPRO;
|
|
|
1874 if (!NILP (handler))
|
|
|
1875 return (call2 (handler, Qdelete_directory, dirname_));
|
|
|
1876
|
|
|
1877 if (rmdir ((char *) XSTRING_DATA (dirname_)) != 0)
|
|
|
1878 report_file_error ("Removing directory", list1 (dirname_));
|
|
|
1879
|
|
|
1880 return Qnil;
|
|
|
1881 }
|
|
|
1882
|
|
|
1883 DEFUN ("delete-file", Fdelete_file, 1, 1, "fDelete file: ", /*
|
|
442
|
1884 Delete the file named FILENAME (a string).
|
|
|
1885 If FILENAME has multiple names, it continues to exist with the other names.
|
|
428
|
1886 */
|
|
|
1887 (filename))
|
|
|
1888 {
|
|
|
1889 /* This function can GC. GC checked 1997.04.06. */
|
|
|
1890 Lisp_Object handler;
|
|
|
1891 struct gcpro gcpro1;
|
|
|
1892
|
|
|
1893 CHECK_STRING (filename);
|
|
|
1894 filename = Fexpand_file_name (filename, Qnil);
|
|
|
1895
|
|
|
1896 GCPRO1 (filename);
|
|
|
1897 handler = Ffind_file_name_handler (filename, Qdelete_file);
|
|
|
1898 UNGCPRO;
|
|
|
1899 if (!NILP (handler))
|
|
|
1900 return call2 (handler, Qdelete_file, filename);
|
|
|
1901
|
|
|
1902 if (0 > unlink ((char *) XSTRING_DATA (filename)))
|
|
|
1903 report_file_error ("Removing old name", list1 (filename));
|
|
|
1904 return Qnil;
|
|
|
1905 }
|
|
|
1906
|
|
|
1907 static Lisp_Object
|
|
|
1908 internal_delete_file_1 (Lisp_Object ignore, Lisp_Object ignore2)
|
|
|
1909 {
|
|
|
1910 return Qt;
|
|
|
1911 }
|
|
|
1912
|
|
|
1913 /* Delete file FILENAME, returning 1 if successful and 0 if failed. */
|
|
|
1914
|
|
|
1915 int
|
|
|
1916 internal_delete_file (Lisp_Object filename)
|
|
|
1917 {
|
|
|
1918 /* This function can GC. GC checked 1997.04.06. */
|
|
|
1919 return NILP (condition_case_1 (Qt, Fdelete_file, filename,
|
|
|
1920 internal_delete_file_1, Qnil));
|
|
|
1921 }
|
|
|
1922
|
|
|
1923 DEFUN ("rename-file", Frename_file, 2, 3,
|
|
|
1924 "fRename file: \nFRename %s to file: \np", /*
|
|
|
1925 Rename FILE as NEWNAME. Both args strings.
|
|
|
1926 If file has names other than FILE, it continues to have those names.
|
|
|
1927 Signals a `file-already-exists' error if a file NEWNAME already exists
|
|
|
1928 unless optional third argument OK-IF-ALREADY-EXISTS is non-nil.
|
|
|
1929 A number as third arg means request confirmation if NEWNAME already exists.
|
|
|
1930 This is what happens in interactive use with M-x.
|
|
|
1931 */
|
|
|
1932 (filename, newname, ok_if_already_exists))
|
|
|
1933 {
|
|
|
1934 /* This function can GC. GC checked 1997.04.06. */
|
|
|
1935 Lisp_Object handler;
|
|
|
1936 struct gcpro gcpro1, gcpro2;
|
|
|
1937
|
|
|
1938 GCPRO2 (filename, newname);
|
|
|
1939 CHECK_STRING (filename);
|
|
|
1940 CHECK_STRING (newname);
|
|
|
1941 filename = Fexpand_file_name (filename, Qnil);
|
|
|
1942 newname = Fexpand_file_name (newname, Qnil);
|
|
|
1943
|
|
|
1944 /* If the file name has special constructs in it,
|
|
|
1945 call the corresponding file handler. */
|
|
|
1946 handler = Ffind_file_name_handler (filename, Qrename_file);
|
|
|
1947 if (NILP (handler))
|
|
|
1948 handler = Ffind_file_name_handler (newname, Qrename_file);
|
|
|
1949 if (!NILP (handler))
|
|
|
1950 {
|
|
|
1951 UNGCPRO;
|
|
|
1952 return call4 (handler, Qrename_file,
|
|
|
1953 filename, newname, ok_if_already_exists);
|
|
|
1954 }
|
|
|
1955
|
|
|
1956 /* When second argument is a directory, rename the file into it.
|
|
|
1957 (rename-file "foo" "bar/") == (rename-file "foo" "bar/foo")
|
|
|
1958 */
|
|
|
1959 if (!NILP (Ffile_directory_p (newname)))
|
|
|
1960 {
|
|
|
1961 Lisp_Object args[3];
|
|
|
1962 struct gcpro ngcpro1;
|
|
|
1963 int i = 1;
|
|
|
1964
|
|
|
1965 args[0] = newname;
|
|
|
1966 args[1] = Qnil; args[2] = Qnil;
|
|
|
1967 NGCPRO1 (*args);
|
|
|
1968 ngcpro1.nvars = 3;
|
|
|
1969 if (XSTRING_BYTE (newname, XSTRING_LENGTH (newname) - 1) != '/')
|
|
|
1970 args[i++] = build_string ("/");
|
|
|
1971 args[i++] = Ffile_name_nondirectory (filename);
|
|
|
1972 newname = Fconcat (i, args);
|
|
|
1973 NUNGCPRO;
|
|
|
1974 }
|
|
|
1975
|
|
|
1976 if (NILP (ok_if_already_exists)
|
|
|
1977 || INTP (ok_if_already_exists))
|
|
|
1978 barf_or_query_if_file_exists (newname, "rename to it",
|
|
|
1979 INTP (ok_if_already_exists), 0);
|
|
|
1980
|
|
|
1981 /* Syncing with FSF 19.34.6 note: FSF does not have conditional code for
|
|
442
|
1982 WIN32_NATIVE here; I've removed it. --marcpa */
|
|
|
1983
|
|
|
1984 /* We have configure check for rename() and emulate using
|
|
|
1985 link()/unlink() if necessary. */
|
|
428
|
1986 if (0 > rename ((char *) XSTRING_DATA (filename),
|
|
|
1987 (char *) XSTRING_DATA (newname)))
|
|
|
1988 {
|
|
|
1989 if (errno == EXDEV)
|
|
|
1990 {
|
|
|
1991 Fcopy_file (filename, newname,
|
|
|
1992 /* We have already prompted if it was an integer,
|
|
|
1993 so don't have copy-file prompt again. */
|
|
|
1994 (NILP (ok_if_already_exists) ? Qnil : Qt),
|
|
|
1995 Qt);
|
|
|
1996 Fdelete_file (filename);
|
|
|
1997 }
|
|
|
1998 else
|
|
|
1999 {
|
|
|
2000 report_file_error ("Renaming", list2 (filename, newname));
|
|
|
2001 }
|
|
|
2002 }
|
|
|
2003 UNGCPRO;
|
|
|
2004 return Qnil;
|
|
|
2005 }
|
|
|
2006
|
|
|
2007 DEFUN ("add-name-to-file", Fadd_name_to_file, 2, 3,
|
|
|
2008 "fAdd name to file: \nFName to add to %s: \np", /*
|
|
|
2009 Give FILE additional name NEWNAME. Both args strings.
|
|
|
2010 Signals a `file-already-exists' error if a file NEWNAME already exists
|
|
|
2011 unless optional third argument OK-IF-ALREADY-EXISTS is non-nil.
|
|
|
2012 A number as third arg means request confirmation if NEWNAME already exists.
|
|
|
2013 This is what happens in interactive use with M-x.
|
|
|
2014 */
|
|
|
2015 (filename, newname, ok_if_already_exists))
|
|
|
2016 {
|
|
|
2017 /* This function can GC. GC checked 1997.04.06. */
|
|
|
2018 Lisp_Object handler;
|
|
|
2019 struct gcpro gcpro1, gcpro2;
|
|
|
2020
|
|
|
2021 GCPRO2 (filename, newname);
|
|
|
2022 CHECK_STRING (filename);
|
|
|
2023 CHECK_STRING (newname);
|
|
|
2024 filename = Fexpand_file_name (filename, Qnil);
|
|
|
2025 newname = Fexpand_file_name (newname, Qnil);
|
|
|
2026
|
|
|
2027 /* If the file name has special constructs in it,
|
|
|
2028 call the corresponding file handler. */
|
|
|
2029 handler = Ffind_file_name_handler (filename, Qadd_name_to_file);
|
|
|
2030 if (!NILP (handler))
|
|
|
2031 RETURN_UNGCPRO (call4 (handler, Qadd_name_to_file, filename,
|
|
|
2032 newname, ok_if_already_exists));
|
|
|
2033
|
|
|
2034 /* If the new name has special constructs in it,
|
|
|
2035 call the corresponding file handler. */
|
|
|
2036 handler = Ffind_file_name_handler (newname, Qadd_name_to_file);
|
|
|
2037 if (!NILP (handler))
|
|
|
2038 RETURN_UNGCPRO (call4 (handler, Qadd_name_to_file, filename,
|
|
|
2039 newname, ok_if_already_exists));
|
|
|
2040
|
|
|
2041 if (NILP (ok_if_already_exists)
|
|
|
2042 || INTP (ok_if_already_exists))
|
|
|
2043 barf_or_query_if_file_exists (newname, "make it a new name",
|
|
|
2044 INTP (ok_if_already_exists), 0);
|
|
|
2045 /* Syncing with FSF 19.34.6 note: FSF does not report a file error
|
|
|
2046 on NT here. --marcpa */
|
|
|
2047 /* But FSF #defines link as sys_link which is supplied in nt.c. We can't do
|
|
|
2048 that because sysfile.h defines sys_link depending on ENCAPSULATE_LINK.
|
|
|
2049 Reverted to previous behavior pending a working fix. (jhar) */
|
|
442
|
2050 #if defined(WIN32_NATIVE)
|
|
428
|
2051 /* Windows does not support this operation. */
|
|
|
2052 report_file_error ("Adding new name", Flist (2, &filename));
|
|
442
|
2053 #else /* not defined(WIN32_NATIVE) */
|
|
428
|
2054
|
|
|
2055 unlink ((char *) XSTRING_DATA (newname));
|
|
|
2056 if (0 > link ((char *) XSTRING_DATA (filename),
|
|
|
2057 (char *) XSTRING_DATA (newname)))
|
|
|
2058 {
|
|
|
2059 report_file_error ("Adding new name",
|
|
|
2060 list2 (filename, newname));
|
|
|
2061 }
|
|
442
|
2062 #endif /* defined(WIN32_NATIVE) */
|
|
428
|
2063
|
|
|
2064 UNGCPRO;
|
|
|
2065 return Qnil;
|
|
|
2066 }
|
|
|
2067
|
|
|
2068 DEFUN ("make-symbolic-link", Fmake_symbolic_link, 2, 3,
|
|
|
2069 "FMake symbolic link to file: \nFMake symbolic link to file %s: \np", /*
|
|
|
2070 Make a symbolic link to FILENAME, named LINKNAME. Both args strings.
|
|
|
2071 Signals a `file-already-exists' error if a file LINKNAME already exists
|
|
|
2072 unless optional third argument OK-IF-ALREADY-EXISTS is non-nil.
|
|
|
2073 A number as third arg means request confirmation if LINKNAME already exists.
|
|
|
2074 This happens for interactive use with M-x.
|
|
|
2075 */
|
|
|
2076 (filename, linkname, ok_if_already_exists))
|
|
|
2077 {
|
|
|
2078 /* This function can GC. GC checked 1997.06.04. */
|
|
442
|
2079 /* XEmacs change: run handlers even if local machine doesn't have symlinks */
|
|
428
|
2080 Lisp_Object handler;
|
|
|
2081 struct gcpro gcpro1, gcpro2;
|
|
|
2082
|
|
|
2083 GCPRO2 (filename, linkname);
|
|
|
2084 CHECK_STRING (filename);
|
|
|
2085 CHECK_STRING (linkname);
|
|
|
2086 /* If the link target has a ~, we must expand it to get
|
|
|
2087 a truly valid file name. Otherwise, do not expand;
|
|
|
2088 we want to permit links to relative file names. */
|
|
|
2089 if (XSTRING_BYTE (filename, 0) == '~')
|
|
|
2090 filename = Fexpand_file_name (filename, Qnil);
|
|
|
2091 linkname = Fexpand_file_name (linkname, Qnil);
|
|
|
2092
|
|
|
2093 /* If the file name has special constructs in it,
|
|
|
2094 call the corresponding file handler. */
|
|
|
2095 handler = Ffind_file_name_handler (filename, Qmake_symbolic_link);
|
|
|
2096 if (!NILP (handler))
|
|
|
2097 RETURN_UNGCPRO (call4 (handler, Qmake_symbolic_link, filename, linkname,
|
|
|
2098 ok_if_already_exists));
|
|
|
2099
|
|
|
2100 /* If the new link name has special constructs in it,
|
|
|
2101 call the corresponding file handler. */
|
|
|
2102 handler = Ffind_file_name_handler (linkname, Qmake_symbolic_link);
|
|
|
2103 if (!NILP (handler))
|
|
|
2104 RETURN_UNGCPRO (call4 (handler, Qmake_symbolic_link, filename,
|
|
|
2105 linkname, ok_if_already_exists));
|
|
|
2106
|
|
442
|
2107 #ifdef S_IFLNK
|
|
428
|
2108 if (NILP (ok_if_already_exists)
|
|
|
2109 || INTP (ok_if_already_exists))
|
|
|
2110 barf_or_query_if_file_exists (linkname, "make it a link",
|
|
|
2111 INTP (ok_if_already_exists), 0);
|
|
|
2112
|
|
|
2113 unlink ((char *) XSTRING_DATA (linkname));
|
|
|
2114 if (0 > symlink ((char *) XSTRING_DATA (filename),
|
|
|
2115 (char *) XSTRING_DATA (linkname)))
|
|
|
2116 {
|
|
|
2117 report_file_error ("Making symbolic link",
|
|
|
2118 list2 (filename, linkname));
|
|
|
2119 }
|
|
442
|
2120 #endif /* S_IFLNK */
|
|
|
2121
|
|
428
|
2122 UNGCPRO;
|
|
|
2123 return Qnil;
|
|
|
2124 }
|
|
|
2125
|
|
|
2126 #ifdef HPUX_NET
|
|
|
2127
|
|
|
2128 DEFUN ("sysnetunam", Fsysnetunam, 2, 2, 0, /*
|
|
|
2129 Open a network connection to PATH using LOGIN as the login string.
|
|
|
2130 */
|
|
|
2131 (path, login))
|
|
|
2132 {
|
|
|
2133 int netresult;
|
|
440
|
2134 const char *path_ext;
|
|
|
2135 const char *login_ext;
|
|
428
|
2136
|
|
|
2137 CHECK_STRING (path);
|
|
|
2138 CHECK_STRING (login);
|
|
|
2139
|
|
|
2140 /* netunam, being a strange-o system call only used once, is not
|
|
|
2141 encapsulated. */
|
|
440
|
2142
|
|
442
|
2143 LISP_STRING_TO_EXTERNAL (path, path_ext, Qfile_name);
|
|
|
2144 LISP_STRING_TO_EXTERNAL (login, login_ext, Qnative);
|
|
440
|
2145
|
|
|
2146 netresult = netunam (path_ext, login_ext);
|
|
|
2147
|
|
|
2148 return netresult == -1 ? Qnil : Qt;
|
|
428
|
2149 }
|
|
|
2150 #endif /* HPUX_NET */
|
|
|
2151
|
|
|
2152 DEFUN ("file-name-absolute-p", Ffile_name_absolute_p, 1, 1, 0, /*
|
|
|
2153 Return t if file FILENAME specifies an absolute path name.
|
|
|
2154 On Unix, this is a name starting with a `/' or a `~'.
|
|
|
2155 */
|
|
|
2156 (filename))
|
|
|
2157 {
|
|
|
2158 /* This function does not GC */
|
|
|
2159 Bufbyte *ptr;
|
|
|
2160
|
|
|
2161 CHECK_STRING (filename);
|
|
|
2162 ptr = XSTRING_DATA (filename);
|
|
|
2163 return (IS_DIRECTORY_SEP (*ptr) || *ptr == '~'
|
|
442
|
2164 #ifdef WIN32_NATIVE
|
|
428
|
2165 || (IS_DRIVE (*ptr) && ptr[1] == ':' && IS_DIRECTORY_SEP (ptr[2]))
|
|
|
2166 #endif
|
|
|
2167 ) ? Qt : Qnil;
|
|
|
2168 }
|
|
|
2169
|
|
|
2170 /* Return nonzero if file FILENAME exists and can be executed. */
|
|
|
2171
|
|
|
2172 static int
|
|
|
2173 check_executable (char *filename)
|
|
|
2174 {
|
|
442
|
2175 #ifdef WIN32_NATIVE
|
|
428
|
2176 struct stat st;
|
|
442
|
2177 if (xemacs_stat (filename, &st) < 0)
|
|
428
|
2178 return 0;
|
|
|
2179 return ((st.st_mode & S_IEXEC) != 0);
|
|
442
|
2180 #else /* not WIN32_NATIVE */
|
|
428
|
2181 #ifdef HAVE_EACCESS
|
|
442
|
2182 return eaccess (filename, X_OK) >= 0;
|
|
428
|
2183 #else
|
|
|
2184 /* Access isn't quite right because it uses the real uid
|
|
|
2185 and we really want to test with the effective uid.
|
|
|
2186 But Unix doesn't give us a right way to do it. */
|
|
442
|
2187 return access (filename, X_OK) >= 0;
|
|
428
|
2188 #endif /* HAVE_EACCESS */
|
|
442
|
2189 #endif /* not WIN32_NATIVE */
|
|
428
|
2190 }
|
|
|
2191
|
|
|
2192 /* Return nonzero if file FILENAME exists and can be written. */
|
|
|
2193
|
|
|
2194 static int
|
|
442
|
2195 check_writable (const char *filename)
|
|
428
|
2196 {
|
|
|
2197 #ifdef HAVE_EACCESS
|
|
442
|
2198 return (eaccess (filename, W_OK) >= 0);
|
|
428
|
2199 #else
|
|
|
2200 /* Access isn't quite right because it uses the real uid
|
|
|
2201 and we really want to test with the effective uid.
|
|
|
2202 But Unix doesn't give us a right way to do it.
|
|
|
2203 Opening with O_WRONLY could work for an ordinary file,
|
|
|
2204 but would lose for directories. */
|
|
442
|
2205 return (access (filename, W_OK) >= 0);
|
|
428
|
2206 #endif
|
|
|
2207 }
|
|
|
2208
|
|
|
2209 DEFUN ("file-exists-p", Ffile_exists_p, 1, 1, 0, /*
|
|
|
2210 Return t if file FILENAME exists. (This does not mean you can read it.)
|
|
|
2211 See also `file-readable-p' and `file-attributes'.
|
|
|
2212 */
|
|
|
2213 (filename))
|
|
|
2214 {
|
|
442
|
2215 /* This function can call lisp; GC checked 2000-07-11 ben */
|
|
428
|
2216 Lisp_Object abspath;
|
|
|
2217 Lisp_Object handler;
|
|
|
2218 struct stat statbuf;
|
|
|
2219 struct gcpro gcpro1;
|
|
|
2220
|
|
|
2221 CHECK_STRING (filename);
|
|
|
2222 abspath = Fexpand_file_name (filename, Qnil);
|
|
|
2223
|
|
|
2224 /* If the file name has special constructs in it,
|
|
|
2225 call the corresponding file handler. */
|
|
|
2226 GCPRO1 (abspath);
|
|
|
2227 handler = Ffind_file_name_handler (abspath, Qfile_exists_p);
|
|
|
2228 UNGCPRO;
|
|
|
2229 if (!NILP (handler))
|
|
|
2230 return call2 (handler, Qfile_exists_p, abspath);
|
|
|
2231
|
|
442
|
2232 return xemacs_stat ((char *) XSTRING_DATA (abspath), &statbuf) >= 0 ? Qt : Qnil;
|
|
428
|
2233 }
|
|
|
2234
|
|
|
2235 DEFUN ("file-executable-p", Ffile_executable_p, 1, 1, 0, /*
|
|
|
2236 Return t if FILENAME can be executed by you.
|
|
|
2237 For a directory, this means you can access files in that directory.
|
|
|
2238 */
|
|
|
2239 (filename))
|
|
|
2240
|
|
|
2241 {
|
|
442
|
2242 /* This function can GC. GC checked 07-11-2000 ben. */
|
|
428
|
2243 Lisp_Object abspath;
|
|
|
2244 Lisp_Object handler;
|
|
|
2245 struct gcpro gcpro1;
|
|
|
2246
|
|
|
2247 CHECK_STRING (filename);
|
|
|
2248 abspath = Fexpand_file_name (filename, Qnil);
|
|
|
2249
|
|
|
2250 /* If the file name has special constructs in it,
|
|
|
2251 call the corresponding file handler. */
|
|
|
2252 GCPRO1 (abspath);
|
|
|
2253 handler = Ffind_file_name_handler (abspath, Qfile_executable_p);
|
|
|
2254 UNGCPRO;
|
|
|
2255 if (!NILP (handler))
|
|
|
2256 return call2 (handler, Qfile_executable_p, abspath);
|
|
|
2257
|
|
|
2258 return check_executable ((char *) XSTRING_DATA (abspath)) ? Qt : Qnil;
|
|
|
2259 }
|
|
|
2260
|
|
|
2261 DEFUN ("file-readable-p", Ffile_readable_p, 1, 1, 0, /*
|
|
|
2262 Return t if file FILENAME exists and you can read it.
|
|
|
2263 See also `file-exists-p' and `file-attributes'.
|
|
|
2264 */
|
|
|
2265 (filename))
|
|
|
2266 {
|
|
|
2267 /* This function can GC */
|
|
|
2268 Lisp_Object abspath = Qnil;
|
|
|
2269 Lisp_Object handler;
|
|
|
2270 struct gcpro gcpro1;
|
|
|
2271 GCPRO1 (abspath);
|
|
|
2272
|
|
|
2273 CHECK_STRING (filename);
|
|
|
2274 abspath = Fexpand_file_name (filename, Qnil);
|
|
|
2275
|
|
|
2276 /* If the file name has special constructs in it,
|
|
|
2277 call the corresponding file handler. */
|
|
|
2278 handler = Ffind_file_name_handler (abspath, Qfile_readable_p);
|
|
|
2279 if (!NILP (handler))
|
|
|
2280 RETURN_UNGCPRO (call2 (handler, Qfile_readable_p, abspath));
|
|
|
2281
|
|
442
|
2282 #if defined(WIN32_NATIVE) || defined(CYGWIN)
|
|
428
|
2283 /* Under MS-DOS and Windows, open does not work for directories. */
|
|
|
2284 UNGCPRO;
|
|
|
2285 if (access (XSTRING_DATA (abspath), 0) == 0)
|
|
|
2286 return Qt;
|
|
|
2287 else
|
|
|
2288 return Qnil;
|
|
442
|
2289 #else /* not WIN32_NATIVE */
|
|
428
|
2290 {
|
|
|
2291 int desc = interruptible_open ((char *) XSTRING_DATA (abspath), O_RDONLY | OPEN_BINARY, 0);
|
|
|
2292 UNGCPRO;
|
|
|
2293 if (desc < 0)
|
|
|
2294 return Qnil;
|
|
|
2295 close (desc);
|
|
|
2296 return Qt;
|
|
|
2297 }
|
|
442
|
2298 #endif /* not WIN32_NATIVE */
|
|
428
|
2299 }
|
|
|
2300
|
|
|
2301 /* Having this before file-symlink-p mysteriously caused it to be forgotten
|
|
|
2302 on the RT/PC. */
|
|
|
2303 DEFUN ("file-writable-p", Ffile_writable_p, 1, 1, 0, /*
|
|
|
2304 Return t if file FILENAME can be written or created by you.
|
|
|
2305 */
|
|
|
2306 (filename))
|
|
|
2307 {
|
|
|
2308 /* This function can GC. GC checked 1997.04.10. */
|
|
|
2309 Lisp_Object abspath, dir;
|
|
|
2310 Lisp_Object handler;
|
|
|
2311 struct stat statbuf;
|
|
|
2312 struct gcpro gcpro1;
|
|
|
2313
|
|
|
2314 CHECK_STRING (filename);
|
|
|
2315 abspath = Fexpand_file_name (filename, Qnil);
|
|
|
2316
|
|
|
2317 /* If the file name has special constructs in it,
|
|
|
2318 call the corresponding file handler. */
|
|
|
2319 GCPRO1 (abspath);
|
|
|
2320 handler = Ffind_file_name_handler (abspath, Qfile_writable_p);
|
|
|
2321 UNGCPRO;
|
|
|
2322 if (!NILP (handler))
|
|
|
2323 return call2 (handler, Qfile_writable_p, abspath);
|
|
|
2324
|
|
442
|
2325 if (xemacs_stat ((char *) XSTRING_DATA (abspath), &statbuf) >= 0)
|
|
428
|
2326 return (check_writable ((char *) XSTRING_DATA (abspath))
|
|
|
2327 ? Qt : Qnil);
|
|
|
2328
|
|
|
2329
|
|
|
2330 GCPRO1 (abspath);
|
|
|
2331 dir = Ffile_name_directory (abspath);
|
|
|
2332 UNGCPRO;
|
|
|
2333 return (check_writable (!NILP (dir) ? (char *) XSTRING_DATA (dir)
|
|
|
2334 : "")
|
|
|
2335 ? Qt : Qnil);
|
|
|
2336 }
|
|
|
2337
|
|
|
2338 DEFUN ("file-symlink-p", Ffile_symlink_p, 1, 1, 0, /*
|
|
|
2339 Return non-nil if file FILENAME is the name of a symbolic link.
|
|
|
2340 The value is the name of the file to which it is linked.
|
|
|
2341 Otherwise returns nil.
|
|
|
2342 */
|
|
|
2343 (filename))
|
|
|
2344 {
|
|
|
2345 /* This function can GC. GC checked 1997.04.10. */
|
|
442
|
2346 /* XEmacs change: run handlers even if local machine doesn't have symlinks */
|
|
428
|
2347 #ifdef S_IFLNK
|
|
|
2348 char *buf;
|
|
|
2349 int bufsize;
|
|
|
2350 int valsize;
|
|
|
2351 Lisp_Object val;
|
|
442
|
2352 #endif
|
|
428
|
2353 Lisp_Object handler;
|
|
|
2354 struct gcpro gcpro1;
|
|
|
2355
|
|
|
2356 CHECK_STRING (filename);
|
|
|
2357 filename = Fexpand_file_name (filename, Qnil);
|
|
|
2358
|
|
|
2359 /* If the file name has special constructs in it,
|
|
|
2360 call the corresponding file handler. */
|
|
|
2361 GCPRO1 (filename);
|
|
|
2362 handler = Ffind_file_name_handler (filename, Qfile_symlink_p);
|
|
|
2363 UNGCPRO;
|
|
|
2364 if (!NILP (handler))
|
|
|
2365 return call2 (handler, Qfile_symlink_p, filename);
|
|
|
2366
|
|
442
|
2367 #ifdef S_IFLNK
|
|
428
|
2368 bufsize = 100;
|
|
|
2369 while (1)
|
|
|
2370 {
|
|
|
2371 buf = xnew_array_and_zero (char, bufsize);
|
|
|
2372 valsize = readlink ((char *) XSTRING_DATA (filename),
|
|
|
2373 buf, bufsize);
|
|
|
2374 if (valsize < bufsize) break;
|
|
|
2375 /* Buffer was not long enough */
|
|
|
2376 xfree (buf);
|
|
|
2377 bufsize *= 2;
|
|
|
2378 }
|
|
|
2379 if (valsize == -1)
|
|
|
2380 {
|
|
|
2381 xfree (buf);
|
|
|
2382 return Qnil;
|
|
|
2383 }
|
|
|
2384 val = make_string ((Bufbyte *) buf, valsize);
|
|
|
2385 xfree (buf);
|
|
|
2386 return val;
|
|
|
2387 #else /* not S_IFLNK */
|
|
|
2388 return Qnil;
|
|
|
2389 #endif /* not S_IFLNK */
|
|
|
2390 }
|
|
|
2391
|
|
|
2392 DEFUN ("file-directory-p", Ffile_directory_p, 1, 1, 0, /*
|
|
|
2393 Return t if file FILENAME is the name of a directory as a file.
|
|
|
2394 A directory name spec may be given instead; then the value is t
|
|
|
2395 if the directory so specified exists and really is a directory.
|
|
|
2396 */
|
|
|
2397 (filename))
|
|
|
2398 {
|
|
|
2399 /* This function can GC. GC checked 1997.04.10. */
|
|
|
2400 Lisp_Object abspath;
|
|
|
2401 struct stat st;
|
|
|
2402 Lisp_Object handler;
|
|
|
2403 struct gcpro gcpro1;
|
|
|
2404
|
|
|
2405 GCPRO1 (current_buffer->directory);
|
|
|
2406 abspath = expand_and_dir_to_file (filename,
|
|
|
2407 current_buffer->directory);
|
|
|
2408 UNGCPRO;
|
|
|
2409
|
|
|
2410 /* If the file name has special constructs in it,
|
|
|
2411 call the corresponding file handler. */
|
|
|
2412 GCPRO1 (abspath);
|
|
|
2413 handler = Ffind_file_name_handler (abspath, Qfile_directory_p);
|
|
|
2414 UNGCPRO;
|
|
|
2415 if (!NILP (handler))
|
|
|
2416 return call2 (handler, Qfile_directory_p, abspath);
|
|
|
2417
|
|
442
|
2418 if (xemacs_stat ((char *) XSTRING_DATA (abspath), &st) < 0)
|
|
428
|
2419 return Qnil;
|
|
|
2420 return (st.st_mode & S_IFMT) == S_IFDIR ? Qt : Qnil;
|
|
|
2421 }
|
|
|
2422
|
|
|
2423 DEFUN ("file-accessible-directory-p", Ffile_accessible_directory_p, 1, 1, 0, /*
|
|
|
2424 Return t if file FILENAME is the name of a directory as a file,
|
|
|
2425 and files in that directory can be opened by you. In order to use a
|
|
|
2426 directory as a buffer's current directory, this predicate must return true.
|
|
|
2427 A directory name spec may be given instead; then the value is t
|
|
|
2428 if the directory so specified exists and really is a readable and
|
|
|
2429 searchable directory.
|
|
|
2430 */
|
|
|
2431 (filename))
|
|
|
2432 {
|
|
|
2433 /* This function can GC. GC checked 1997.04.10. */
|
|
|
2434 Lisp_Object handler;
|
|
|
2435
|
|
|
2436 /* If the file name has special constructs in it,
|
|
|
2437 call the corresponding file handler. */
|
|
|
2438 handler = Ffind_file_name_handler (filename, Qfile_accessible_directory_p);
|
|
|
2439 if (!NILP (handler))
|
|
|
2440 return call2 (handler, Qfile_accessible_directory_p,
|
|
|
2441 filename);
|
|
|
2442
|
|
442
|
2443 #if !defined(WIN32_NATIVE)
|
|
428
|
2444 if (NILP (Ffile_directory_p (filename)))
|
|
|
2445 return (Qnil);
|
|
|
2446 else
|
|
|
2447 return Ffile_executable_p (filename);
|
|
|
2448 #else
|
|
|
2449 {
|
|
|
2450 int tem;
|
|
|
2451 struct gcpro gcpro1;
|
|
|
2452 /* It's an unlikely combination, but yes we really do need to gcpro:
|
|
|
2453 Suppose that file-accessible-directory-p has no handler, but
|
|
|
2454 file-directory-p does have a handler; this handler causes a GC which
|
|
|
2455 relocates the string in `filename'; and finally file-directory-p
|
|
|
2456 returns non-nil. Then we would end up passing a garbaged string
|
|
|
2457 to file-executable-p. */
|
|
|
2458 GCPRO1 (filename);
|
|
|
2459 tem = (NILP (Ffile_directory_p (filename))
|
|
|
2460 || NILP (Ffile_executable_p (filename)));
|
|
|
2461 UNGCPRO;
|
|
|
2462 return tem ? Qnil : Qt;
|
|
|
2463 }
|
|
442
|
2464 #endif /* !defined(WIN32_NATIVE) */
|
|
428
|
2465 }
|
|
|
2466
|
|
|
2467 DEFUN ("file-regular-p", Ffile_regular_p, 1, 1, 0, /*
|
|
|
2468 Return t if file FILENAME is the name of a regular file.
|
|
|
2469 This is the sort of file that holds an ordinary stream of data bytes.
|
|
|
2470 */
|
|
|
2471 (filename))
|
|
|
2472 {
|
|
|
2473 /* This function can GC. GC checked 1997.04.10. */
|
|
|
2474 Lisp_Object abspath;
|
|
|
2475 struct stat st;
|
|
|
2476 Lisp_Object handler;
|
|
|
2477 struct gcpro gcpro1;
|
|
|
2478
|
|
|
2479 GCPRO1 (current_buffer->directory);
|
|
|
2480 abspath = expand_and_dir_to_file (filename, current_buffer->directory);
|
|
|
2481 UNGCPRO;
|
|
|
2482
|
|
|
2483 /* If the file name has special constructs in it,
|
|
|
2484 call the corresponding file handler. */
|
|
|
2485 GCPRO1 (abspath);
|
|
|
2486 handler = Ffind_file_name_handler (abspath, Qfile_regular_p);
|
|
|
2487 UNGCPRO;
|
|
|
2488 if (!NILP (handler))
|
|
|
2489 return call2 (handler, Qfile_regular_p, abspath);
|
|
|
2490
|
|
442
|
2491 if (xemacs_stat ((char *) XSTRING_DATA (abspath), &st) < 0)
|
|
428
|
2492 return Qnil;
|
|
|
2493 return (st.st_mode & S_IFMT) == S_IFREG ? Qt : Qnil;
|
|
|
2494 }
|
|
|
2495
|
|
|
2496 DEFUN ("file-modes", Ffile_modes, 1, 1, 0, /*
|
|
|
2497 Return mode bits of FILE, as an integer.
|
|
|
2498 */
|
|
|
2499 (filename))
|
|
|
2500 {
|
|
|
2501 /* This function can GC. GC checked 1997.04.10. */
|
|
|
2502 Lisp_Object abspath;
|
|
|
2503 struct stat st;
|
|
|
2504 Lisp_Object handler;
|
|
|
2505 struct gcpro gcpro1;
|
|
|
2506
|
|
|
2507 GCPRO1 (current_buffer->directory);
|
|
|
2508 abspath = expand_and_dir_to_file (filename,
|
|
|
2509 current_buffer->directory);
|
|
|
2510 UNGCPRO;
|
|
|
2511
|
|
|
2512 /* If the file name has special constructs in it,
|
|
|
2513 call the corresponding file handler. */
|
|
|
2514 GCPRO1 (abspath);
|
|
|
2515 handler = Ffind_file_name_handler (abspath, Qfile_modes);
|
|
|
2516 UNGCPRO;
|
|
|
2517 if (!NILP (handler))
|
|
|
2518 return call2 (handler, Qfile_modes, abspath);
|
|
|
2519
|
|
442
|
2520 if (xemacs_stat ((char *) XSTRING_DATA (abspath), &st) < 0)
|
|
428
|
2521 return Qnil;
|
|
|
2522 /* Syncing with FSF 19.34.6 note: not in FSF, #if 0'ed out here. */
|
|
|
2523 #if 0
|
|
442
|
2524 #ifdef WIN32_NATIVE
|
|
428
|
2525 if (check_executable (XSTRING_DATA (abspath)))
|
|
|
2526 st.st_mode |= S_IEXEC;
|
|
442
|
2527 #endif /* WIN32_NATIVE */
|
|
428
|
2528 #endif /* 0 */
|
|
|
2529
|
|
|
2530 return make_int (st.st_mode & 07777);
|
|
|
2531 }
|
|
|
2532
|
|
|
2533 DEFUN ("set-file-modes", Fset_file_modes, 2, 2, 0, /*
|
|
|
2534 Set mode bits of FILE to MODE (an integer).
|
|
|
2535 Only the 12 low bits of MODE are used.
|
|
|
2536 */
|
|
|
2537 (filename, mode))
|
|
|
2538 {
|
|
|
2539 /* This function can GC. GC checked 1997.04.10. */
|
|
|
2540 Lisp_Object abspath;
|
|
|
2541 Lisp_Object handler;
|
|
|
2542 struct gcpro gcpro1;
|
|
|
2543
|
|
|
2544 GCPRO1 (current_buffer->directory);
|
|
|
2545 abspath = Fexpand_file_name (filename, current_buffer->directory);
|
|
|
2546 UNGCPRO;
|
|
|
2547
|
|
|
2548 CHECK_INT (mode);
|
|
|
2549
|
|
|
2550 /* If the file name has special constructs in it,
|
|
|
2551 call the corresponding file handler. */
|
|
|
2552 GCPRO1 (abspath);
|
|
|
2553 handler = Ffind_file_name_handler (abspath, Qset_file_modes);
|
|
|
2554 UNGCPRO;
|
|
|
2555 if (!NILP (handler))
|
|
|
2556 return call3 (handler, Qset_file_modes, abspath, mode);
|
|
|
2557
|
|
|
2558 if (chmod ((char *) XSTRING_DATA (abspath), XINT (mode)) < 0)
|
|
|
2559 report_file_error ("Doing chmod", list1 (abspath));
|
|
|
2560
|
|
|
2561 return Qnil;
|
|
|
2562 }
|
|
|
2563
|
|
|
2564 DEFUN ("set-default-file-modes", Fset_default_file_modes, 1, 1, 0, /*
|
|
|
2565 Set the file permission bits for newly created files.
|
|
|
2566 MASK should be an integer; if a permission's bit in MASK is 1,
|
|
|
2567 subsequently created files will not have that permission enabled.
|
|
|
2568 Only the low 9 bits are used.
|
|
|
2569 This setting is inherited by subprocesses.
|
|
|
2570 */
|
|
|
2571 (mode))
|
|
|
2572 {
|
|
|
2573 CHECK_INT (mode);
|
|
|
2574
|
|
|
2575 umask ((~ XINT (mode)) & 0777);
|
|
|
2576
|
|
|
2577 return Qnil;
|
|
|
2578 }
|
|
|
2579
|
|
|
2580 DEFUN ("default-file-modes", Fdefault_file_modes, 0, 0, 0, /*
|
|
|
2581 Return the default file protection for created files.
|
|
|
2582 The umask value determines which permissions are enabled in newly
|
|
|
2583 created files. If a permission's bit in the umask is 1, subsequently
|
|
|
2584 created files will not have that permission enabled.
|
|
|
2585 */
|
|
|
2586 ())
|
|
|
2587 {
|
|
|
2588 int mode;
|
|
|
2589
|
|
|
2590 mode = umask (0);
|
|
|
2591 umask (mode);
|
|
|
2592
|
|
|
2593 return make_int ((~ mode) & 0777);
|
|
|
2594 }
|
|
|
2595
|
|
|
2596 DEFUN ("unix-sync", Funix_sync, 0, 0, "", /*
|
|
|
2597 Tell Unix to finish all pending disk updates.
|
|
|
2598 */
|
|
|
2599 ())
|
|
|
2600 {
|
|
442
|
2601 #ifndef WIN32_NATIVE
|
|
428
|
2602 sync ();
|
|
|
2603 #endif
|
|
|
2604 return Qnil;
|
|
|
2605 }
|
|
|
2606
|
|
|
2607
|
|
|
2608 DEFUN ("file-newer-than-file-p", Ffile_newer_than_file_p, 2, 2, 0, /*
|
|
|
2609 Return t if file FILE1 is newer than file FILE2.
|
|
|
2610 If FILE1 does not exist, the answer is nil;
|
|
|
2611 otherwise, if FILE2 does not exist, the answer is t.
|
|
|
2612 */
|
|
|
2613 (file1, file2))
|
|
|
2614 {
|
|
|
2615 /* This function can GC. GC checked 1997.04.10. */
|
|
|
2616 Lisp_Object abspath1, abspath2;
|
|
|
2617 struct stat st;
|
|
|
2618 int mtime1;
|
|
|
2619 Lisp_Object handler;
|
|
|
2620 struct gcpro gcpro1, gcpro2, gcpro3;
|
|
|
2621
|
|
|
2622 CHECK_STRING (file1);
|
|
|
2623 CHECK_STRING (file2);
|
|
|
2624
|
|
|
2625 abspath1 = Qnil;
|
|
|
2626 abspath2 = Qnil;
|
|
|
2627
|
|
|
2628 GCPRO3 (abspath1, abspath2, current_buffer->directory);
|
|
|
2629 abspath1 = expand_and_dir_to_file (file1, current_buffer->directory);
|
|
|
2630 abspath2 = expand_and_dir_to_file (file2, current_buffer->directory);
|
|
|
2631
|
|
|
2632 /* If the file name has special constructs in it,
|
|
|
2633 call the corresponding file handler. */
|
|
|
2634 handler = Ffind_file_name_handler (abspath1, Qfile_newer_than_file_p);
|
|
|
2635 if (NILP (handler))
|
|
|
2636 handler = Ffind_file_name_handler (abspath2, Qfile_newer_than_file_p);
|
|
|
2637 UNGCPRO;
|
|
|
2638 if (!NILP (handler))
|
|
|
2639 return call3 (handler, Qfile_newer_than_file_p, abspath1,
|
|
|
2640 abspath2);
|
|
|
2641
|
|
442
|
2642 if (xemacs_stat ((char *) XSTRING_DATA (abspath1), &st) < 0)
|
|
428
|
2643 return Qnil;
|
|
|
2644
|
|
|
2645 mtime1 = st.st_mtime;
|
|
|
2646
|
|
442
|
2647 if (xemacs_stat ((char *) XSTRING_DATA (abspath2), &st) < 0)
|
|
428
|
2648 return Qt;
|
|
|
2649
|
|
|
2650 return (mtime1 > st.st_mtime) ? Qt : Qnil;
|
|
|
2651 }
|
|
|
2652
|
|
|
2653
|
|
|
2654 /* Stack sizes > 2**16 is a good way to elicit compiler bugs */
|
|
|
2655 /* #define READ_BUF_SIZE (2 << 16) */
|
|
|
2656 #define READ_BUF_SIZE (1 << 15)
|
|
|
2657
|
|
|
2658 DEFUN ("insert-file-contents-internal", Finsert_file_contents_internal,
|
|
|
2659 1, 7, 0, /*
|
|
|
2660 Insert contents of file FILENAME after point; no coding-system frobbing.
|
|
|
2661 This function is identical to `insert-file-contents' except for the
|
|
|
2662 handling of the CODESYS and USED-CODESYS arguments under
|
|
|
2663 XEmacs/Mule. (When Mule support is not present, both functions are
|
|
|
2664 identical and ignore the CODESYS and USED-CODESYS arguments.)
|
|
|
2665
|
|
|
2666 If support for Mule exists in this Emacs, the file is decoded according
|
|
|
2667 to CODESYS; if omitted, no conversion happens. If USED-CODESYS is non-nil,
|
|
|
2668 it should be a symbol, and the actual coding system that was used for the
|
|
|
2669 decoding is stored into it. It will in general be different from CODESYS
|
|
|
2670 if CODESYS specifies automatic encoding detection or end-of-line detection.
|
|
|
2671
|
|
|
2672 Currently BEG and END refer to byte positions (as opposed to character
|
|
|
2673 positions), even in Mule. (Fixing this is very difficult.)
|
|
|
2674 */
|
|
|
2675 (filename, visit, beg, end, replace, codesys, used_codesys))
|
|
|
2676 {
|
|
|
2677 /* This function can call lisp */
|
|
|
2678 /* #### dmoore - this function hasn't been checked for gc recently */
|
|
|
2679 struct stat st;
|
|
|
2680 int fd;
|
|
|
2681 int saverrno = 0;
|
|
|
2682 Charcount inserted = 0;
|
|
|
2683 int speccount;
|
|
|
2684 struct gcpro gcpro1, gcpro2, gcpro3, gcpro4, gcpro5;
|
|
|
2685 Lisp_Object handler = Qnil, val;
|
|
|
2686 int total;
|
|
|
2687 Bufbyte read_buf[READ_BUF_SIZE];
|
|
|
2688 int mc_count;
|
|
|
2689 struct buffer *buf = current_buffer;
|
|
|
2690 Lisp_Object curbuf;
|
|
|
2691 int not_regular = 0;
|
|
|
2692
|
|
|
2693 if (buf->base_buffer && ! NILP (visit))
|
|
|
2694 error ("Cannot do file visiting in an indirect buffer");
|
|
|
2695
|
|
|
2696 /* No need to call Fbarf_if_buffer_read_only() here.
|
|
|
2697 That's called in begin_multiple_change() or wherever. */
|
|
|
2698
|
|
|
2699 val = Qnil;
|
|
|
2700
|
|
|
2701 /* #### dmoore - should probably check in various places to see if
|
|
|
2702 curbuf was killed and if so signal an error? */
|
|
|
2703
|
|
|
2704 XSETBUFFER (curbuf, buf);
|
|
|
2705
|
|
|
2706 GCPRO5 (filename, val, visit, handler, curbuf);
|
|
|
2707
|
|
|
2708 mc_count = (NILP (replace)) ?
|
|
|
2709 begin_multiple_change (buf, BUF_PT (buf), BUF_PT (buf)) :
|
|
|
2710 begin_multiple_change (buf, BUF_BEG (buf), BUF_Z (buf));
|
|
|
2711
|
|
|
2712 speccount = specpdl_depth (); /* begin_multiple_change also adds
|
|
|
2713 an unwind_protect */
|
|
|
2714
|
|
|
2715 filename = Fexpand_file_name (filename, Qnil);
|
|
|
2716
|
|
|
2717 /* If the file name has special constructs in it,
|
|
|
2718 call the corresponding file handler. */
|
|
|
2719 handler = Ffind_file_name_handler (filename, Qinsert_file_contents);
|
|
|
2720 if (!NILP (handler))
|
|
|
2721 {
|
|
|
2722 val = call6 (handler, Qinsert_file_contents, filename,
|
|
|
2723 visit, beg, end, replace);
|
|
|
2724 goto handled;
|
|
|
2725 }
|
|
|
2726
|
|
|
2727 #ifdef FILE_CODING
|
|
|
2728 if (!NILP (used_codesys))
|
|
|
2729 CHECK_SYMBOL (used_codesys);
|
|
|
2730 #endif
|
|
|
2731
|
|
|
2732 if ( (!NILP (beg) || !NILP (end)) && !NILP (visit) )
|
|
|
2733 error ("Attempt to visit less than an entire file");
|
|
|
2734
|
|
|
2735 fd = -1;
|
|
|
2736
|
|
442
|
2737 if (xemacs_stat ((char *) XSTRING_DATA (filename), &st) < 0)
|
|
428
|
2738 {
|
|
|
2739 if (fd >= 0) close (fd);
|
|
|
2740 badopen:
|
|
|
2741 if (NILP (visit))
|
|
|
2742 report_file_error ("Opening input file", list1 (filename));
|
|
|
2743 st.st_mtime = -1;
|
|
|
2744 goto notfound;
|
|
|
2745 }
|
|
|
2746
|
|
|
2747 #ifdef S_IFREG
|
|
|
2748 /* Signal an error if we are accessing a non-regular file, with
|
|
|
2749 REPLACE, BEG or END being non-nil. */
|
|
|
2750 if (!S_ISREG (st.st_mode))
|
|
|
2751 {
|
|
|
2752 not_regular = 1;
|
|
|
2753
|
|
|
2754 if (!NILP (visit))
|
|
|
2755 goto notfound;
|
|
|
2756
|
|
|
2757 if (!NILP (replace) || !NILP (beg) || !NILP (end))
|
|
|
2758 {
|
|
|
2759 end_multiple_change (buf, mc_count);
|
|
|
2760
|
|
|
2761 return Fsignal (Qfile_error,
|
|
|
2762 list2 (build_translated_string("not a regular file"),
|
|
|
2763 filename));
|
|
|
2764 }
|
|
|
2765 }
|
|
|
2766 #endif /* S_IFREG */
|
|
|
2767
|
|
|
2768 if (!NILP (beg))
|
|
|
2769 CHECK_INT (beg);
|
|
|
2770 else
|
|
|
2771 beg = Qzero;
|
|
|
2772
|
|
|
2773 if (!NILP (end))
|
|
|
2774 CHECK_INT (end);
|
|
|
2775
|
|
|
2776 if (fd < 0)
|
|
|
2777 {
|
|
|
2778 if ((fd = interruptible_open ((char *) XSTRING_DATA (filename),
|
|
|
2779 O_RDONLY | OPEN_BINARY, 0)) < 0)
|
|
|
2780 goto badopen;
|
|
|
2781 }
|
|
|
2782
|
|
|
2783 /* Replacement should preserve point as it preserves markers. */
|
|
|
2784 if (!NILP (replace))
|
|
|
2785 record_unwind_protect (restore_point_unwind, Fpoint_marker (Qnil, Qnil));
|
|
|
2786
|
|
|
2787 record_unwind_protect (close_file_unwind, make_int (fd));
|
|
|
2788
|
|
|
2789 /* Supposedly happens on VMS. */
|
|
|
2790 if (st.st_size < 0)
|
|
|
2791 error ("File size is negative");
|
|
|
2792
|
|
|
2793 if (NILP (end))
|
|
|
2794 {
|
|
|
2795 if (!not_regular)
|
|
|
2796 {
|
|
|
2797 end = make_int (st.st_size);
|
|
|
2798 if (XINT (end) != st.st_size)
|
|
|
2799 error ("Maximum buffer size exceeded");
|
|
|
2800 }
|
|
|
2801 }
|
|
|
2802
|
|
|
2803 /* If requested, replace the accessible part of the buffer
|
|
|
2804 with the file contents. Avoid replacing text at the
|
|
|
2805 beginning or end of the buffer that matches the file contents;
|
|
|
2806 that preserves markers pointing to the unchanged parts. */
|
|
|
2807 #if !defined (FILE_CODING)
|
|
|
2808 /* The replace-mode code currently only works when the assumption
|
|
|
2809 'one byte == one char' holds true. This fails Mule because
|
|
|
2810 files may contain multibyte characters. It holds under Windows NT
|
|
|
2811 provided we convert CRLF into LF. */
|
|
|
2812 # define FSFMACS_SPEEDY_INSERT
|
|
|
2813 #endif /* !defined (FILE_CODING) */
|
|
|
2814
|
|
|
2815 #ifndef FSFMACS_SPEEDY_INSERT
|
|
|
2816 if (!NILP (replace))
|
|
|
2817 {
|
|
|
2818 buffer_delete_range (buf, BUF_BEG (buf), BUF_Z (buf),
|
|
|
2819 !NILP (visit) ? INSDEL_NO_LOCKING : 0);
|
|
|
2820 }
|
|
|
2821 #else /* FSFMACS_SPEEDY_INSERT */
|
|
|
2822 if (!NILP (replace))
|
|
|
2823 {
|
|
|
2824 char buffer[1 << 14];
|
|
|
2825 Bufpos same_at_start = BUF_BEGV (buf);
|
|
|
2826 Bufpos same_at_end = BUF_ZV (buf);
|
|
|
2827 int overlap;
|
|
|
2828
|
|
|
2829 /* Count how many chars at the start of the file
|
|
|
2830 match the text at the beginning of the buffer. */
|
|
|
2831 while (1)
|
|
|
2832 {
|
|
|
2833 int nread;
|
|
|
2834 Bufpos bufpos;
|
|
|
2835 nread = read_allowing_quit (fd, buffer, sizeof buffer);
|
|
|
2836 if (nread < 0)
|
|
|
2837 error ("IO error reading %s: %s",
|
|
|
2838 XSTRING_DATA (filename), strerror (errno));
|
|
|
2839 else if (nread == 0)
|
|
|
2840 break;
|
|
|
2841 bufpos = 0;
|
|
|
2842 while (bufpos < nread && same_at_start < BUF_ZV (buf)
|
|
|
2843 && BUF_FETCH_CHAR (buf, same_at_start) == buffer[bufpos])
|
|
|
2844 same_at_start++, bufpos++;
|
|
|
2845 /* If we found a discrepancy, stop the scan.
|
|
|
2846 Otherwise loop around and scan the next bufferful. */
|
|
|
2847 if (bufpos != nread)
|
|
|
2848 break;
|
|
|
2849 }
|
|
|
2850 /* If the file matches the buffer completely,
|
|
|
2851 there's no need to replace anything. */
|
|
|
2852 if (same_at_start - BUF_BEGV (buf) == st.st_size)
|
|
|
2853 {
|
|
|
2854 close (fd);
|
|
|
2855 unbind_to (speccount, Qnil);
|
|
|
2856 /* Truncate the buffer to the size of the file. */
|
|
|
2857 buffer_delete_range (buf, same_at_start, same_at_end,
|
|
|
2858 !NILP (visit) ? INSDEL_NO_LOCKING : 0);
|
|
|
2859 goto handled;
|
|
|
2860 }
|
|
|
2861 /* Count how many chars at the end of the file
|
|
|
2862 match the text at the end of the buffer. */
|
|
|
2863 while (1)
|
|
|
2864 {
|
|
|
2865 int total_read, nread;
|
|
|
2866 Bufpos bufpos, curpos, trial;
|
|
|
2867
|
|
|
2868 /* At what file position are we now scanning? */
|
|
|
2869 curpos = st.st_size - (BUF_ZV (buf) - same_at_end);
|
|
|
2870 /* If the entire file matches the buffer tail, stop the scan. */
|
|
|
2871 if (curpos == 0)
|
|
|
2872 break;
|
|
|
2873 /* How much can we scan in the next step? */
|
|
|
2874 trial = min (curpos, (Bufpos) sizeof (buffer));
|
|
|
2875 if (lseek (fd, curpos - trial, 0) < 0)
|
|
|
2876 report_file_error ("Setting file position", list1 (filename));
|
|
|
2877
|
|
|
2878 total_read = 0;
|
|
|
2879 while (total_read < trial)
|
|
|
2880 {
|
|
|
2881 nread = read_allowing_quit (fd, buffer + total_read,
|
|
|
2882 trial - total_read);
|
|
|
2883 if (nread <= 0)
|
|
|
2884 report_file_error ("IO error reading file", list1 (filename));
|
|
|
2885 total_read += nread;
|
|
|
2886 }
|
|
|
2887 /* Scan this bufferful from the end, comparing with
|
|
|
2888 the Emacs buffer. */
|
|
|
2889 bufpos = total_read;
|
|
|
2890 /* Compare with same_at_start to avoid counting some buffer text
|
|
|
2891 as matching both at the file's beginning and at the end. */
|
|
|
2892 while (bufpos > 0 && same_at_end > same_at_start
|
|
|
2893 && BUF_FETCH_CHAR (buf, same_at_end - 1) ==
|
|
|
2894 buffer[bufpos - 1])
|
|
|
2895 same_at_end--, bufpos--;
|
|
|
2896 /* If we found a discrepancy, stop the scan.
|
|
|
2897 Otherwise loop around and scan the preceding bufferful. */
|
|
|
2898 if (bufpos != 0)
|
|
|
2899 break;
|
|
|
2900 /* If display current starts at beginning of line,
|
|
|
2901 keep it that way. */
|
|
|
2902 if (XBUFFER (XWINDOW (Fselected_window (Qnil))->buffer) == buf)
|
|
|
2903 XWINDOW (Fselected_window (Qnil))->start_at_line_beg =
|
|
|
2904 !NILP (Fbolp (make_buffer (buf)));
|
|
|
2905 }
|
|
|
2906
|
|
|
2907 /* Don't try to reuse the same piece of text twice. */
|
|
|
2908 overlap = same_at_start - BUF_BEGV (buf) -
|
|
|
2909 (same_at_end + st.st_size - BUF_ZV (buf));
|
|
|
2910 if (overlap > 0)
|
|
|
2911 same_at_end += overlap;
|
|
|
2912
|
|
|
2913 /* Arrange to read only the nonmatching middle part of the file. */
|
|
|
2914 beg = make_int (same_at_start - BUF_BEGV (buf));
|
|
|
2915 end = make_int (st.st_size - (BUF_ZV (buf) - same_at_end));
|
|
|
2916
|
|
|
2917 buffer_delete_range (buf, same_at_start, same_at_end,
|
|
|
2918 !NILP (visit) ? INSDEL_NO_LOCKING : 0);
|
|
|
2919 /* Insert from the file at the proper position. */
|
|
|
2920 BUF_SET_PT (buf, same_at_start);
|
|
|
2921 }
|
|
|
2922 #endif /* FSFMACS_SPEEDY_INSERT */
|
|
|
2923
|
|
|
2924 if (!not_regular)
|
|
|
2925 {
|
|
|
2926 total = XINT (end) - XINT (beg);
|
|
|
2927
|
|
|
2928 /* Make sure point-max won't overflow after this insertion. */
|
|
|
2929 if (total != XINT (make_int (total)))
|
|
|
2930 error ("Maximum buffer size exceeded");
|
|
|
2931 }
|
|
|
2932 else
|
|
|
2933 /* For a special file, all we can do is guess. The value of -1
|
|
|
2934 will make the stream functions read as much as possible. */
|
|
|
2935 total = -1;
|
|
|
2936
|
|
|
2937 if (XINT (beg) != 0
|
|
|
2938 #ifdef FSFMACS_SPEEDY_INSERT
|
|
|
2939 /* why was this here? asked jwz. The reason is that the replace-mode
|
|
|
2940 connivings above will normally put the file pointer other than
|
|
|
2941 where it should be. */
|
|
|
2942 || !NILP (replace)
|
|
|
2943 #endif /* !FSFMACS_SPEEDY_INSERT */
|
|
|
2944 )
|
|
|
2945 {
|
|
|
2946 if (lseek (fd, XINT (beg), 0) < 0)
|
|
|
2947 report_file_error ("Setting file position", list1 (filename));
|
|
|
2948 }
|
|
|
2949
|
|
|
2950 {
|
|
|
2951 Bufpos cur_point = BUF_PT (buf);
|
|
|
2952 struct gcpro ngcpro1;
|
|
|
2953 Lisp_Object stream = make_filedesc_input_stream (fd, 0, total,
|
|
|
2954 LSTR_ALLOW_QUIT);
|
|
|
2955
|
|
|
2956 NGCPRO1 (stream);
|
|
|
2957 Lstream_set_buffering (XLSTREAM (stream), LSTREAM_BLOCKN_BUFFERED, 65536);
|
|
|
2958 #ifdef FILE_CODING
|
|
|
2959 stream = make_decoding_input_stream
|
|
|
2960 (XLSTREAM (stream), Fget_coding_system (codesys));
|
|
|
2961 Lstream_set_character_mode (XLSTREAM (stream));
|
|
|
2962 Lstream_set_buffering (XLSTREAM (stream), LSTREAM_BLOCKN_BUFFERED, 65536);
|
|
|
2963 #endif /* FILE_CODING */
|
|
|
2964
|
|
|
2965 record_unwind_protect (delete_stream_unwind, stream);
|
|
|
2966
|
|
|
2967 /* No need to limit the amount of stuff we attempt to read. (It would
|
|
|
2968 be incorrect, anyway, when Mule is enabled.) Instead, the limiting
|
|
|
2969 occurs inside of the filedesc stream. */
|
|
|
2970 while (1)
|
|
|
2971 {
|
|
|
2972 ssize_t this_len;
|
|
|
2973 Charcount cc_inserted;
|
|
|
2974
|
|
|
2975 QUIT;
|
|
|
2976 this_len = Lstream_read (XLSTREAM (stream), read_buf,
|
|
|
2977 sizeof (read_buf));
|
|
|
2978
|
|
|
2979 if (this_len <= 0)
|
|
|
2980 {
|
|
|
2981 if (this_len < 0)
|
|
|
2982 saverrno = errno;
|
|
|
2983 break;
|
|
|
2984 }
|
|
|
2985
|
|
|
2986 cc_inserted = buffer_insert_raw_string_1 (buf, cur_point, read_buf,
|
|
|
2987 this_len,
|
|
|
2988 !NILP (visit)
|
|
|
2989 ? INSDEL_NO_LOCKING : 0);
|
|
|
2990 inserted += cc_inserted;
|
|
|
2991 cur_point += cc_inserted;
|
|
|
2992 }
|
|
|
2993 #ifdef FILE_CODING
|
|
|
2994 if (!NILP (used_codesys))
|
|
|
2995 {
|
|
|
2996 Fset (used_codesys,
|
|
|
2997 XCODING_SYSTEM_NAME (decoding_stream_coding_system (XLSTREAM (stream))));
|
|
|
2998 }
|
|
|
2999 #endif /* FILE_CODING */
|
|
|
3000 NUNGCPRO;
|
|
|
3001 }
|
|
|
3002
|
|
|
3003 /* Close the file/stream */
|
|
|
3004 unbind_to (speccount, Qnil);
|
|
|
3005
|
|
|
3006 if (saverrno != 0)
|
|
|
3007 {
|
|
|
3008 error ("IO error reading %s: %s",
|
|
|
3009 XSTRING_DATA (filename), strerror (saverrno));
|
|
|
3010 }
|
|
|
3011
|
|
|
3012 notfound:
|
|
|
3013 handled:
|
|
|
3014
|
|
|
3015 end_multiple_change (buf, mc_count);
|
|
|
3016
|
|
|
3017 if (!NILP (visit))
|
|
|
3018 {
|
|
|
3019 if (!EQ (buf->undo_list, Qt))
|
|
|
3020 buf->undo_list = Qnil;
|
|
|
3021 if (NILP (handler))
|
|
|
3022 {
|
|
|
3023 buf->modtime = st.st_mtime;
|
|
|
3024 buf->filename = filename;
|
|
|
3025 /* XEmacs addition: */
|
|
|
3026 /* This function used to be in C, ostensibly so that
|
|
|
3027 it could be called here. But that's just silly.
|
|
|
3028 There's no reason C code can't call out to Lisp
|
|
|
3029 code, and it's a lot cleaner this way. */
|
|
|
3030 if (!NILP (Ffboundp (Qcompute_buffer_file_truename)))
|
|
|
3031 call1 (Qcompute_buffer_file_truename, make_buffer (buf));
|
|
|
3032 }
|
|
|
3033 BUF_SAVE_MODIFF (buf) = BUF_MODIFF (buf);
|
|
|
3034 buf->auto_save_modified = BUF_MODIFF (buf);
|
|
|
3035 buf->saved_size = make_int (BUF_SIZE (buf));
|
|
|
3036 #ifdef CLASH_DETECTION
|
|
|
3037 if (NILP (handler))
|
|
|
3038 {
|
|
|
3039 if (!NILP (buf->file_truename))
|
|
|
3040 unlock_file (buf->file_truename);
|
|
|
3041 unlock_file (filename);
|
|
|
3042 }
|
|
|
3043 #endif /* CLASH_DETECTION */
|
|
|
3044 if (not_regular)
|
|
|
3045 RETURN_UNGCPRO (Fsignal (Qfile_error,
|
|
|
3046 list2 (build_string ("not a regular file"),
|
|
|
3047 filename)));
|
|
|
3048
|
|
|
3049 /* If visiting nonexistent file, return nil. */
|
|
|
3050 if (buf->modtime == -1)
|
|
|
3051 report_file_error ("Opening input file",
|
|
|
3052 list1 (filename));
|
|
|
3053 }
|
|
|
3054
|
|
|
3055 /* Decode file format */
|
|
|
3056 if (inserted > 0)
|
|
|
3057 {
|
|
|
3058 Lisp_Object insval = call3 (Qformat_decode,
|
|
|
3059 Qnil, make_int (inserted), visit);
|
|
|
3060 CHECK_INT (insval);
|
|
|
3061 inserted = XINT (insval);
|
|
|
3062 }
|
|
|
3063
|
|
|
3064 if (inserted > 0)
|
|
|
3065 {
|
|
|
3066 Lisp_Object p;
|
|
|
3067 struct gcpro ngcpro1;
|
|
|
3068
|
|
|
3069 NGCPRO1 (p);
|
|
|
3070 EXTERNAL_LIST_LOOP (p, Vafter_insert_file_functions)
|
|
|
3071 {
|
|
|
3072 Lisp_Object insval =
|
|
|
3073 call1 (XCAR (p), make_int (inserted));
|
|
|
3074 if (!NILP (insval))
|
|
|
3075 {
|
|
|
3076 CHECK_NATNUM (insval);
|
|
|
3077 inserted = XINT (insval);
|
|
|
3078 }
|
|
|
3079 QUIT;
|
|
|
3080 }
|
|
|
3081 NUNGCPRO;
|
|
|
3082 }
|
|
|
3083
|
|
|
3084 UNGCPRO;
|
|
|
3085
|
|
|
3086 if (!NILP (val))
|
|
|
3087 return (val);
|
|
|
3088 else
|
|
|
3089 return (list2 (filename, make_int (inserted)));
|
|
|
3090 }
|
|
|
3091
|
|
|
3092
|
|
|
3093 static int a_write (Lisp_Object outstream, Lisp_Object instream, int pos,
|
|
|
3094 Lisp_Object *annot);
|
|
|
3095 static Lisp_Object build_annotations (Lisp_Object start, Lisp_Object end);
|
|
|
3096
|
|
|
3097 /* If build_annotations switched buffers, switch back to BUF.
|
|
|
3098 Kill the temporary buffer that was selected in the meantime. */
|
|
|
3099
|
|
|
3100 static Lisp_Object
|
|
|
3101 build_annotations_unwind (Lisp_Object buf)
|
|
|
3102 {
|
|
|
3103 Lisp_Object tembuf;
|
|
|
3104
|
|
|
3105 if (XBUFFER (buf) == current_buffer)
|
|
|
3106 return Qnil;
|
|
|
3107 tembuf = Fcurrent_buffer ();
|
|
|
3108 Fset_buffer (buf);
|
|
|
3109 Fkill_buffer (tembuf);
|
|
|
3110 return Qnil;
|
|
|
3111 }
|
|
|
3112
|
|
|
3113 DEFUN ("write-region-internal", Fwrite_region_internal, 3, 7,
|
|
|
3114 "r\nFWrite region to file: ", /*
|
|
|
3115 Write current region into specified file; no coding-system frobbing.
|
|
|
3116 This function is identical to `write-region' except for the handling
|
|
|
3117 of the CODESYS argument under XEmacs/Mule. (When Mule support is not
|
|
|
3118 present, both functions are identical and ignore the CODESYS argument.)
|
|
|
3119 If support for Mule exists in this Emacs, the file is encoded according
|
|
|
3120 to the value of CODESYS. If this is nil, no code conversion occurs.
|
|
|
3121 */
|
|
|
3122 (start, end, filename, append, visit, lockname, codesys))
|
|
|
3123 {
|
|
442
|
3124 /* This function can call lisp. GC checked 2000-07-28 ben */
|
|
428
|
3125 int desc;
|
|
|
3126 int failure;
|
|
|
3127 int save_errno = 0;
|
|
|
3128 struct stat st;
|
|
442
|
3129 Lisp_Object fn = Qnil;
|
|
428
|
3130 int speccount = specpdl_depth ();
|
|
|
3131 int visiting_other = STRINGP (visit);
|
|
|
3132 int visiting = (EQ (visit, Qt) || visiting_other);
|
|
|
3133 int quietly = (!visiting && !NILP (visit));
|
|
|
3134 Lisp_Object visit_file = Qnil;
|
|
|
3135 Lisp_Object annotations = Qnil;
|
|
|
3136 struct buffer *given_buffer;
|
|
|
3137 Bufpos start1, end1;
|
|
442
|
3138 struct gcpro gcpro1, gcpro2, gcpro3, gcpro4, gcpro5;
|
|
|
3139 struct gcpro ngcpro1, ngcpro2;
|
|
|
3140 Lisp_Object curbuf;
|
|
|
3141
|
|
|
3142 XSETBUFFER (curbuf, current_buffer);
|
|
|
3143
|
|
|
3144 /* start, end, visit, and append are never modified in this fun
|
|
|
3145 so we don't protect them. */
|
|
|
3146 GCPRO5 (visit_file, filename, codesys, lockname, annotations);
|
|
|
3147 NGCPRO2 (curbuf, fn);
|
|
|
3148
|
|
|
3149 /* [[ dmoore - if Fexpand_file_name or handlers kill the buffer,
|
|
428
|
3150 we should signal an error rather than blissfully continuing
|
|
|
3151 along. ARGH, this function is going to lose lose lose. We need
|
|
|
3152 to protect the current_buffer from being destroyed, but the
|
|
442
|
3153 multiple return points make this a pain in the butt. ]] we do
|
|
|
3154 protect curbuf now. --ben */
|
|
428
|
3155
|
|
|
3156 #ifdef FILE_CODING
|
|
|
3157 codesys = Fget_coding_system (codesys);
|
|
|
3158 #endif /* FILE_CODING */
|
|
|
3159
|
|
|
3160 if (current_buffer->base_buffer && ! NILP (visit))
|
|
442
|
3161 invalid_operation ("Cannot do file visiting in an indirect buffer",
|
|
|
3162 curbuf);
|
|
428
|
3163
|
|
|
3164 if (!NILP (start) && !STRINGP (start))
|
|
|
3165 get_buffer_range_char (current_buffer, start, end, &start1, &end1, 0);
|
|
|
3166
|
|
|
3167 {
|
|
|
3168 Lisp_Object handler;
|
|
|
3169
|
|
|
3170 if (visiting_other)
|
|
|
3171 visit_file = Fexpand_file_name (visit, Qnil);
|
|
|
3172 else
|
|
|
3173 visit_file = filename;
|
|
|
3174 filename = Fexpand_file_name (filename, Qnil);
|
|
|
3175
|
|
|
3176 if (NILP (lockname))
|
|
|
3177 lockname = visit_file;
|
|
|
3178
|
|
442
|
3179 /* We used to UNGCPRO here. BAD! visit_file is used below after
|
|
|
3180 more Lisp calling. */
|
|
428
|
3181 /* If the file name has special constructs in it,
|
|
|
3182 call the corresponding file handler. */
|
|
|
3183 handler = Ffind_file_name_handler (filename, Qwrite_region);
|
|
|
3184 /* If FILENAME has no handler, see if VISIT has one. */
|
|
|
3185 if (NILP (handler) && STRINGP (visit))
|
|
|
3186 handler = Ffind_file_name_handler (visit, Qwrite_region);
|
|
|
3187
|
|
|
3188 if (!NILP (handler))
|
|
|
3189 {
|
|
|
3190 Lisp_Object val = call8 (handler, Qwrite_region, start, end,
|
|
|
3191 filename, append, visit, lockname, codesys);
|
|
|
3192 if (visiting)
|
|
|
3193 {
|
|
|
3194 BUF_SAVE_MODIFF (current_buffer) = BUF_MODIFF (current_buffer);
|
|
|
3195 current_buffer->saved_size = make_int (BUF_SIZE (current_buffer));
|
|
|
3196 current_buffer->filename = visit_file;
|
|
|
3197 MARK_MODELINE_CHANGED;
|
|
|
3198 }
|
|
442
|
3199 NUNGCPRO;
|
|
|
3200 UNGCPRO;
|
|
428
|
3201 return val;
|
|
|
3202 }
|
|
|
3203 }
|
|
|
3204
|
|
|
3205 #ifdef CLASH_DETECTION
|
|
|
3206 if (!auto_saving)
|
|
442
|
3207 lock_file (lockname);
|
|
428
|
3208 #endif /* CLASH_DETECTION */
|
|
|
3209
|
|
|
3210 /* Special kludge to simplify auto-saving. */
|
|
|
3211 if (NILP (start))
|
|
|
3212 {
|
|
|
3213 start1 = BUF_BEG (current_buffer);
|
|
|
3214 end1 = BUF_Z (current_buffer);
|
|
|
3215 }
|
|
|
3216
|
|
|
3217 record_unwind_protect (build_annotations_unwind, Fcurrent_buffer ());
|
|
|
3218
|
|
|
3219 given_buffer = current_buffer;
|
|
|
3220 annotations = build_annotations (start, end);
|
|
|
3221 if (current_buffer != given_buffer)
|
|
|
3222 {
|
|
|
3223 start1 = BUF_BEGV (current_buffer);
|
|
|
3224 end1 = BUF_ZV (current_buffer);
|
|
|
3225 }
|
|
|
3226
|
|
|
3227 fn = filename;
|
|
|
3228 desc = -1;
|
|
|
3229 if (!NILP (append))
|
|
|
3230 {
|
|
|
3231 desc = open ((char *) XSTRING_DATA (fn), O_WRONLY | OPEN_BINARY, 0);
|
|
|
3232 }
|
|
|
3233 if (desc < 0)
|
|
|
3234 {
|
|
|
3235 desc = open ((char *) XSTRING_DATA (fn),
|
|
442
|
3236 O_WRONLY | O_TRUNC | O_CREAT | OPEN_BINARY,
|
|
|
3237 auto_saving ? auto_save_mode_bits : CREAT_MODE);
|
|
428
|
3238 }
|
|
|
3239
|
|
|
3240 if (desc < 0)
|
|
|
3241 {
|
|
|
3242 #ifdef CLASH_DETECTION
|
|
|
3243 save_errno = errno;
|
|
|
3244 if (!auto_saving) unlock_file (lockname);
|
|
|
3245 errno = save_errno;
|
|
|
3246 #endif /* CLASH_DETECTION */
|
|
|
3247 report_file_error ("Opening output file", list1 (filename));
|
|
|
3248 }
|
|
|
3249
|
|
|
3250 {
|
|
|
3251 Lisp_Object desc_locative = Fcons (make_int (desc), Qnil);
|
|
|
3252 Lisp_Object instream = Qnil, outstream = Qnil;
|
|
442
|
3253 struct gcpro nngcpro1, nngcpro2;
|
|
428
|
3254 /* need to gcpro; QUIT could happen out of call to write() */
|
|
442
|
3255 NNGCPRO2 (instream, outstream);
|
|
428
|
3256
|
|
|
3257 record_unwind_protect (close_file_unwind, desc_locative);
|
|
|
3258
|
|
|
3259 if (!NILP (append))
|
|
|
3260 {
|
|
|
3261 if (lseek (desc, 0, 2) < 0)
|
|
|
3262 {
|
|
|
3263 #ifdef CLASH_DETECTION
|
|
|
3264 if (!auto_saving) unlock_file (lockname);
|
|
|
3265 #endif /* CLASH_DETECTION */
|
|
|
3266 report_file_error ("Lseek error",
|
|
|
3267 list1 (filename));
|
|
|
3268 }
|
|
|
3269 }
|
|
|
3270
|
|
|
3271 failure = 0;
|
|
|
3272
|
|
|
3273 /* Note: I tried increasing the buffering size, along with
|
|
|
3274 various other tricks, but nothing seemed to make much of
|
|
|
3275 a difference in the time it took to save a large file.
|
|
|
3276 (Actually that's not true. With a local disk, changing
|
|
|
3277 the buffer size doesn't seem to make much difference.
|
|
|
3278 With an NFS-mounted disk, it could make a lot of difference
|
|
|
3279 because you're affecting the number of network requests
|
|
|
3280 that need to be made, and there could be a large latency
|
|
|
3281 for each request. So I've increased the buffer size
|
|
|
3282 to 64K.) */
|
|
|
3283 outstream = make_filedesc_output_stream (desc, 0, -1, 0);
|
|
|
3284 Lstream_set_buffering (XLSTREAM (outstream),
|
|
|
3285 LSTREAM_BLOCKN_BUFFERED, 65536);
|
|
|
3286 #ifdef FILE_CODING
|
|
|
3287 outstream =
|
|
|
3288 make_encoding_output_stream (XLSTREAM (outstream), codesys);
|
|
|
3289 Lstream_set_buffering (XLSTREAM (outstream),
|
|
|
3290 LSTREAM_BLOCKN_BUFFERED, 65536);
|
|
|
3291 #endif /* FILE_CODING */
|
|
|
3292 if (STRINGP (start))
|
|
|
3293 {
|
|
|
3294 instream = make_lisp_string_input_stream (start, 0, -1);
|
|
|
3295 start1 = 0;
|
|
|
3296 }
|
|
|
3297 else
|
|
|
3298 instream = make_lisp_buffer_input_stream (current_buffer, start1, end1,
|
|
|
3299 LSTR_SELECTIVE |
|
|
|
3300 LSTR_IGNORE_ACCESSIBLE);
|
|
|
3301 failure = (0 > (a_write (outstream, instream, start1,
|
|
|
3302 &annotations)));
|
|
|
3303 save_errno = errno;
|
|
|
3304 /* Note that this doesn't close the desc since we created the
|
|
|
3305 stream without the LSTR_CLOSING flag, but it does
|
|
|
3306 flush out any buffered data. */
|
|
|
3307 if (Lstream_close (XLSTREAM (outstream)) < 0)
|
|
|
3308 {
|
|
|
3309 failure = 1;
|
|
|
3310 save_errno = errno;
|
|
|
3311 }
|
|
|
3312 Lstream_close (XLSTREAM (instream));
|
|
|
3313
|
|
|
3314 #ifdef HAVE_FSYNC
|
|
|
3315 /* Note fsync appears to change the modtime on BSD4.2 (both vax and sun).
|
|
|
3316 Disk full in NFS may be reported here. */
|
|
|
3317 /* mib says that closing the file will try to write as fast as NFS can do
|
|
|
3318 it, and that means the fsync here is not crucial for autosave files. */
|
|
|
3319 if (!auto_saving && fsync (desc) < 0
|
|
|
3320 /* If fsync fails with EINTR, don't treat that as serious. */
|
|
|
3321 && errno != EINTR)
|
|
|
3322 {
|
|
|
3323 failure = 1;
|
|
|
3324 save_errno = errno;
|
|
|
3325 }
|
|
|
3326 #endif /* HAVE_FSYNC */
|
|
|
3327
|
|
440
|
3328 /* Spurious "file has changed on disk" warnings used to be seen on
|
|
|
3329 systems where close() can change the modtime. This is known to
|
|
|
3330 happen on various NFS file systems, on Windows, and on Linux.
|
|
|
3331 Rather than handling this on a per-system basis, we
|
|
442
|
3332 unconditionally do the xemacs_stat() after the close(). */
|
|
428
|
3333
|
|
|
3334 /* NFS can report a write failure now. */
|
|
|
3335 if (close (desc) < 0)
|
|
|
3336 {
|
|
|
3337 failure = 1;
|
|
|
3338 save_errno = errno;
|
|
|
3339 }
|
|
|
3340
|
|
|
3341 /* Discard the close unwind-protect. Execute the one for
|
|
|
3342 build_annotations (switches back to the original current buffer
|
|
|
3343 as necessary). */
|
|
|
3344 XCAR (desc_locative) = Qnil;
|
|
|
3345 unbind_to (speccount, Qnil);
|
|
442
|
3346
|
|
|
3347 NNUNGCPRO;
|
|
428
|
3348 }
|
|
|
3349
|
|
442
|
3350 xemacs_stat ((char *) XSTRING_DATA (fn), &st);
|
|
428
|
3351
|
|
|
3352 #ifdef CLASH_DETECTION
|
|
|
3353 if (!auto_saving)
|
|
|
3354 unlock_file (lockname);
|
|
|
3355 #endif /* CLASH_DETECTION */
|
|
|
3356
|
|
|
3357 /* Do this before reporting IO error
|
|
|
3358 to avoid a "file has changed on disk" warning on
|
|
|
3359 next attempt to save. */
|
|
|
3360 if (visiting)
|
|
|
3361 current_buffer->modtime = st.st_mtime;
|
|
|
3362
|
|
|
3363 if (failure)
|
|
442
|
3364 {
|
|
|
3365 errno = save_errno;
|
|
|
3366 report_file_error ("Writing file", list1 (fn));
|
|
|
3367 }
|
|
428
|
3368
|
|
|
3369 if (visiting)
|
|
|
3370 {
|
|
|
3371 BUF_SAVE_MODIFF (current_buffer) = BUF_MODIFF (current_buffer);
|
|
|
3372 current_buffer->saved_size = make_int (BUF_SIZE (current_buffer));
|
|
|
3373 current_buffer->filename = visit_file;
|
|
|
3374 MARK_MODELINE_CHANGED;
|
|
|
3375 }
|
|
|
3376 else if (quietly)
|
|
|
3377 {
|
|
442
|
3378 NUNGCPRO;
|
|
|
3379 UNGCPRO;
|
|
428
|
3380 return Qnil;
|
|
|
3381 }
|
|
|
3382
|
|
|
3383 if (!auto_saving)
|
|
|
3384 {
|
|
|
3385 if (visiting_other)
|
|
|
3386 message ("Wrote %s", XSTRING_DATA (visit_file));
|
|
|
3387 else
|
|
|
3388 {
|
|
|
3389 Lisp_Object fsp;
|
|
442
|
3390 struct gcpro nngcpro1;
|
|
|
3391
|
|
|
3392 NNGCPRO1 (fsp);
|
|
428
|
3393 fsp = Ffile_symlink_p (fn);
|
|
|
3394 if (NILP (fsp))
|
|
|
3395 message ("Wrote %s", XSTRING_DATA (fn));
|
|
|
3396 else
|
|
|
3397 message ("Wrote %s (symlink to %s)",
|
|
|
3398 XSTRING_DATA (fn), XSTRING_DATA (fsp));
|
|
442
|
3399 NNUNGCPRO;
|
|
428
|
3400 }
|
|
|
3401 }
|
|
442
|
3402 NUNGCPRO;
|
|
|
3403 UNGCPRO;
|
|
428
|
3404 return Qnil;
|
|
|
3405 }
|
|
|
3406
|
|
|
3407 /* #### This is such a load of shit!!!! There is no way we should define
|
|
|
3408 something so stupid as a subr, just sort the fucking list more
|
|
|
3409 intelligently. */
|
|
|
3410 DEFUN ("car-less-than-car", Fcar_less_than_car, 2, 2, 0, /*
|
|
|
3411 Return t if (car A) is numerically less than (car B).
|
|
|
3412 */
|
|
|
3413 (a, b))
|
|
|
3414 {
|
|
|
3415 Lisp_Object objs[2];
|
|
|
3416 objs[0] = Fcar (a);
|
|
|
3417 objs[1] = Fcar (b);
|
|
|
3418 return Flss (2, objs);
|
|
|
3419 }
|
|
|
3420
|
|
|
3421 /* Heh heh heh, let's define this too, just to aggravate the person who
|
|
|
3422 wrote the above comment. */
|
|
|
3423 DEFUN ("cdr-less-than-cdr", Fcdr_less_than_cdr, 2, 2, 0, /*
|
|
|
3424 Return t if (cdr A) is numerically less than (cdr B).
|
|
|
3425 */
|
|
|
3426 (a, b))
|
|
|
3427 {
|
|
|
3428 Lisp_Object objs[2];
|
|
|
3429 objs[0] = Fcdr (a);
|
|
|
3430 objs[1] = Fcdr (b);
|
|
|
3431 return Flss (2, objs);
|
|
|
3432 }
|
|
|
3433
|
|
|
3434 /* Build the complete list of annotations appropriate for writing out
|
|
|
3435 the text between START and END, by calling all the functions in
|
|
|
3436 write-region-annotate-functions and merging the lists they return.
|
|
|
3437 If one of these functions switches to a different buffer, we assume
|
|
|
3438 that buffer contains altered text. Therefore, the caller must
|
|
|
3439 make sure to restore the current buffer in all cases,
|
|
|
3440 as save-excursion would do. */
|
|
|
3441
|
|
|
3442 static Lisp_Object
|
|
|
3443 build_annotations (Lisp_Object start, Lisp_Object end)
|
|
|
3444 {
|
|
|
3445 /* This function can GC */
|
|
|
3446 Lisp_Object annotations;
|
|
|
3447 Lisp_Object p, res;
|
|
|
3448 struct gcpro gcpro1, gcpro2;
|
|
|
3449 Lisp_Object original_buffer;
|
|
|
3450
|
|
|
3451 XSETBUFFER (original_buffer, current_buffer);
|
|
|
3452
|
|
|
3453 annotations = Qnil;
|
|
|
3454 p = Vwrite_region_annotate_functions;
|
|
|
3455 GCPRO2 (annotations, p);
|
|
|
3456 while (!NILP (p))
|
|
|
3457 {
|
|
|
3458 struct buffer *given_buffer = current_buffer;
|
|
|
3459 Vwrite_region_annotations_so_far = annotations;
|
|
|
3460 res = call2 (Fcar (p), start, end);
|
|
|
3461 /* If the function makes a different buffer current,
|
|
|
3462 assume that means this buffer contains altered text to be output.
|
|
|
3463 Reset START and END from the buffer bounds
|
|
|
3464 and discard all previous annotations because they should have
|
|
|
3465 been dealt with by this function. */
|
|
|
3466 if (current_buffer != given_buffer)
|
|
|
3467 {
|
|
|
3468 start = make_int (BUF_BEGV (current_buffer));
|
|
|
3469 end = make_int (BUF_ZV (current_buffer));
|
|
|
3470 annotations = Qnil;
|
|
|
3471 }
|
|
|
3472 Flength (res); /* Check basic validity of return value */
|
|
|
3473 annotations = merge (annotations, res, Qcar_less_than_car);
|
|
|
3474 p = Fcdr (p);
|
|
|
3475 }
|
|
|
3476
|
|
|
3477 /* Now do the same for annotation functions implied by the file-format */
|
|
|
3478 if (auto_saving && (!EQ (Vauto_save_file_format, Qt)))
|
|
|
3479 p = Vauto_save_file_format;
|
|
|
3480 else
|
|
|
3481 p = current_buffer->file_format;
|
|
|
3482 while (!NILP (p))
|
|
|
3483 {
|
|
|
3484 struct buffer *given_buffer = current_buffer;
|
|
|
3485 Vwrite_region_annotations_so_far = annotations;
|
|
|
3486 res = call4 (Qformat_annotate_function, Fcar (p), start, end,
|
|
|
3487 original_buffer);
|
|
|
3488 if (current_buffer != given_buffer)
|
|
|
3489 {
|
|
|
3490 start = make_int (BUF_BEGV (current_buffer));
|
|
|
3491 end = make_int (BUF_ZV (current_buffer));
|
|
|
3492 annotations = Qnil;
|
|
|
3493 }
|
|
|
3494 Flength (res);
|
|
|
3495 annotations = merge (annotations, res, Qcar_less_than_car);
|
|
|
3496 p = Fcdr (p);
|
|
|
3497 }
|
|
|
3498 UNGCPRO;
|
|
|
3499 return annotations;
|
|
|
3500 }
|
|
|
3501
|
|
|
3502 /* Write to stream OUTSTREAM the characters from INSTREAM (it is read until
|
|
|
3503 EOF is encountered), assuming they start at position POS in the buffer
|
|
|
3504 of string that STREAM refers to. Intersperse with them the annotations
|
|
|
3505 from *ANNOT that fall into the range of positions we are reading from,
|
|
|
3506 each at its appropriate position.
|
|
|
3507
|
|
|
3508 Modify *ANNOT by discarding elements as we output them.
|
|
|
3509 The return value is negative in case of system call failure. */
|
|
|
3510
|
|
|
3511 /* 4K should probably be fine. We just need to reduce the number of
|
|
|
3512 function calls to reasonable level. The Lstream stuff itself will
|
|
|
3513 batch to 64K to reduce the number of system calls. */
|
|
|
3514
|
|
|
3515 #define A_WRITE_BATCH_SIZE 4096
|
|
|
3516
|
|
|
3517 static int
|
|
|
3518 a_write (Lisp_Object outstream, Lisp_Object instream, int pos,
|
|
|
3519 Lisp_Object *annot)
|
|
|
3520 {
|
|
|
3521 Lisp_Object tem;
|
|
|
3522 int nextpos;
|
|
|
3523 unsigned char largebuf[A_WRITE_BATCH_SIZE];
|
|
|
3524 Lstream *instr = XLSTREAM (instream);
|
|
|
3525 Lstream *outstr = XLSTREAM (outstream);
|
|
|
3526
|
|
|
3527 while (LISTP (*annot))
|
|
|
3528 {
|
|
|
3529 tem = Fcar_safe (Fcar (*annot));
|
|
|
3530 if (INTP (tem))
|
|
|
3531 nextpos = XINT (tem);
|
|
|
3532 else
|
|
|
3533 nextpos = INT_MAX;
|
|
|
3534 #ifdef MULE
|
|
|
3535 /* If there are annotations left and we have Mule, then we
|
|
|
3536 have to do the I/O one emchar at a time so we can
|
|
|
3537 determine when to insert the annotation. */
|
|
|
3538 if (!NILP (*annot))
|
|
|
3539 {
|
|
|
3540 Emchar ch;
|
|
|
3541 while (pos != nextpos && (ch = Lstream_get_emchar (instr)) != EOF)
|
|
|
3542 {
|
|
|
3543 if (Lstream_put_emchar (outstr, ch) < 0)
|
|
|
3544 return -1;
|
|
|
3545 pos++;
|
|
|
3546 }
|
|
|
3547 }
|
|
|
3548 else
|
|
|
3549 #endif /* MULE */
|
|
|
3550 {
|
|
|
3551 while (pos != nextpos)
|
|
|
3552 {
|
|
|
3553 /* Otherwise there is no point to that. Just go in batches. */
|
|
|
3554 int chunk = min (nextpos - pos, A_WRITE_BATCH_SIZE);
|
|
|
3555
|
|
|
3556 chunk = Lstream_read (instr, largebuf, chunk);
|
|
|
3557 if (chunk < 0)
|
|
|
3558 return -1;
|
|
|
3559 if (chunk == 0) /* EOF */
|
|
|
3560 break;
|
|
|
3561 if (Lstream_write (outstr, largebuf, chunk) < chunk)
|
|
|
3562 return -1;
|
|
|
3563 pos += chunk;
|
|
|
3564 }
|
|
|
3565 }
|
|
|
3566 if (pos == nextpos)
|
|
|
3567 {
|
|
|
3568 tem = Fcdr (Fcar (*annot));
|
|
|
3569 if (STRINGP (tem))
|
|
|
3570 {
|
|
|
3571 if (Lstream_write (outstr, XSTRING_DATA (tem),
|
|
|
3572 XSTRING_LENGTH (tem)) < 0)
|
|
|
3573 return -1;
|
|
|
3574 }
|
|
|
3575 *annot = Fcdr (*annot);
|
|
|
3576 }
|
|
|
3577 else
|
|
|
3578 return 0;
|
|
|
3579 }
|
|
|
3580 return -1;
|
|
|
3581 }
|
|
|
3582
|
|
|
3583
|
|
|
3584
|
|
|
3585 #if 0
|
|
|
3586 #include <des_crypt.h>
|
|
|
3587
|
|
|
3588 #define CRYPT_BLOCK_SIZE 8 /* bytes */
|
|
|
3589 #define CRYPT_KEY_SIZE 8 /* bytes */
|
|
|
3590
|
|
|
3591 DEFUN ("encrypt-string", Fencrypt_string, 2, 2, 0, /*
|
|
|
3592 Encrypt STRING using KEY.
|
|
|
3593 */
|
|
|
3594 (string, key))
|
|
|
3595 {
|
|
|
3596 char *encrypted_string, *raw_key;
|
|
|
3597 int rounded_size, extra, key_size;
|
|
|
3598
|
|
|
3599 /* !!#### May produce bogus data under Mule. */
|
|
|
3600 CHECK_STRING (string);
|
|
|
3601 CHECK_STRING (key);
|
|
|
3602
|
|
|
3603 extra = XSTRING_LENGTH (string) % CRYPT_BLOCK_SIZE;
|
|
|
3604 rounded_size = XSTRING_LENGTH (string) + extra;
|
|
|
3605 encrypted_string = alloca (rounded_size + 1);
|
|
|
3606 memcpy (encrypted_string, XSTRING_DATA (string), XSTRING_LENGTH (string));
|
|
|
3607 memset (encrypted_string + rounded_size - extra, 0, extra + 1);
|
|
|
3608
|
|
|
3609 key_size = min (CRYPT_KEY_SIZE, XSTRING_LENGTH (key))
|
|
|
3610
|
|
|
3611 raw_key = alloca (CRYPT_KEY_SIZE + 1);
|
|
|
3612 memcpy (raw_key, XSTRING_DATA (key), key_size);
|
|
|
3613 memset (raw_key + key_size, 0, (CRYPT_KEY_SIZE + 1) - key_size);
|
|
|
3614
|
|
|
3615 ecb_crypt (raw_key, encrypted_string, rounded_size,
|
|
|
3616 DES_ENCRYPT | DES_SW);
|
|
|
3617 return make_string (encrypted_string, rounded_size);
|
|
|
3618 }
|
|
|
3619
|
|
|
3620 DEFUN ("decrypt-string", Fdecrypt_string, 2, 2, 0, /*
|
|
|
3621 Decrypt STRING using KEY.
|
|
|
3622 */
|
|
|
3623 (string, key))
|
|
|
3624 {
|
|
|
3625 char *decrypted_string, *raw_key;
|
|
|
3626 int string_size, key_size;
|
|
|
3627
|
|
|
3628 CHECK_STRING (string);
|
|
|
3629 CHECK_STRING (key);
|
|
|
3630
|
|
|
3631 string_size = XSTRING_LENGTH (string) + 1;
|
|
|
3632 decrypted_string = alloca (string_size);
|
|
|
3633 memcpy (decrypted_string, XSTRING_DATA (string), string_size);
|
|
|
3634 decrypted_string[string_size - 1] = '\0';
|
|
|
3635
|
|
|
3636 key_size = min (CRYPT_KEY_SIZE, XSTRING_LENGTH (key))
|
|
|
3637
|
|
|
3638 raw_key = alloca (CRYPT_KEY_SIZE + 1);
|
|
|
3639 memcpy (raw_key, XSTRING_DATA (key), key_size);
|
|
|
3640 memset (raw_key + key_size, 0, (CRYPT_KEY_SIZE + 1) - key_size);
|
|
|
3641
|
|
|
3642
|
|
|
3643 ecb_crypt (raw_key, decrypted_string, string_size, D | DES_SW);
|
|
|
3644 return make_string (decrypted_string, string_size - 1);
|
|
|
3645 }
|
|
|
3646 #endif /* 0 */
|
|
|
3647
|
|
|
3648
|
|
|
3649 DEFUN ("verify-visited-file-modtime", Fverify_visited_file_modtime, 1, 1, 0, /*
|
|
|
3650 Return t if last mod time of BUF's visited file matches what BUF records.
|
|
|
3651 This means that the file has not been changed since it was visited or saved.
|
|
|
3652 */
|
|
|
3653 (buf))
|
|
|
3654 {
|
|
442
|
3655 /* This function can call lisp; GC checked 2000-07-11 ben */
|
|
428
|
3656 struct buffer *b;
|
|
|
3657 struct stat st;
|
|
|
3658 Lisp_Object handler;
|
|
|
3659
|
|
|
3660 CHECK_BUFFER (buf);
|
|
|
3661 b = XBUFFER (buf);
|
|
|
3662
|
|
|
3663 if (!STRINGP (b->filename)) return Qt;
|
|
|
3664 if (b->modtime == 0) return Qt;
|
|
|
3665
|
|
|
3666 /* If the file name has special constructs in it,
|
|
|
3667 call the corresponding file handler. */
|
|
|
3668 handler = Ffind_file_name_handler (b->filename,
|
|
|
3669 Qverify_visited_file_modtime);
|
|
|
3670 if (!NILP (handler))
|
|
|
3671 return call2 (handler, Qverify_visited_file_modtime, buf);
|
|
|
3672
|
|
442
|
3673 if (xemacs_stat ((char *) XSTRING_DATA (b->filename), &st) < 0)
|
|
428
|
3674 {
|
|
|
3675 /* If the file doesn't exist now and didn't exist before,
|
|
|
3676 we say that it isn't modified, provided the error is a tame one. */
|
|
|
3677 if (errno == ENOENT || errno == EACCES || errno == ENOTDIR)
|
|
|
3678 st.st_mtime = -1;
|
|
|
3679 else
|
|
|
3680 st.st_mtime = 0;
|
|
|
3681 }
|
|
|
3682 if (st.st_mtime == b->modtime
|
|
|
3683 /* If both are positive, accept them if they are off by one second. */
|
|
|
3684 || (st.st_mtime > 0 && b->modtime > 0
|
|
|
3685 && (st.st_mtime == b->modtime + 1
|
|
|
3686 || st.st_mtime == b->modtime - 1)))
|
|
|
3687 return Qt;
|
|
|
3688 return Qnil;
|
|
|
3689 }
|
|
|
3690
|
|
|
3691 DEFUN ("clear-visited-file-modtime", Fclear_visited_file_modtime, 0, 0, 0, /*
|
|
|
3692 Clear out records of last mod time of visited file.
|
|
|
3693 Next attempt to save will certainly not complain of a discrepancy.
|
|
|
3694 */
|
|
|
3695 ())
|
|
|
3696 {
|
|
|
3697 current_buffer->modtime = 0;
|
|
|
3698 return Qnil;
|
|
|
3699 }
|
|
|
3700
|
|
|
3701 DEFUN ("visited-file-modtime", Fvisited_file_modtime, 0, 0, 0, /*
|
|
|
3702 Return the current buffer's recorded visited file modification time.
|
|
|
3703 The value is a list of the form (HIGH . LOW), like the time values
|
|
|
3704 that `file-attributes' returns.
|
|
|
3705 */
|
|
|
3706 ())
|
|
|
3707 {
|
|
|
3708 return time_to_lisp ((time_t) current_buffer->modtime);
|
|
|
3709 }
|
|
|
3710
|
|
|
3711 DEFUN ("set-visited-file-modtime", Fset_visited_file_modtime, 0, 1, 0, /*
|
|
|
3712 Update buffer's recorded modification time from the visited file's time.
|
|
|
3713 Useful if the buffer was not read from the file normally
|
|
|
3714 or if the file itself has been changed for some known benign reason.
|
|
|
3715 An argument specifies the modification time value to use
|
|
|
3716 \(instead of that of the visited file), in the form of a list
|
|
|
3717 \(HIGH . LOW) or (HIGH LOW).
|
|
|
3718 */
|
|
|
3719 (time_list))
|
|
|
3720 {
|
|
|
3721 /* This function can call lisp */
|
|
|
3722 if (!NILP (time_list))
|
|
|
3723 {
|
|
|
3724 time_t the_time;
|
|
|
3725 lisp_to_time (time_list, &the_time);
|
|
|
3726 current_buffer->modtime = (int) the_time;
|
|
|
3727 }
|
|
|
3728 else
|
|
|
3729 {
|
|
|
3730 Lisp_Object filename;
|
|
|
3731 struct stat st;
|
|
|
3732 Lisp_Object handler;
|
|
|
3733 struct gcpro gcpro1, gcpro2, gcpro3;
|
|
|
3734
|
|
|
3735 GCPRO3 (filename, time_list, current_buffer->filename);
|
|
|
3736 filename = Fexpand_file_name (current_buffer->filename, Qnil);
|
|
|
3737
|
|
|
3738 /* If the file name has special constructs in it,
|
|
|
3739 call the corresponding file handler. */
|
|
|
3740 handler = Ffind_file_name_handler (filename, Qset_visited_file_modtime);
|
|
|
3741 UNGCPRO;
|
|
|
3742 if (!NILP (handler))
|
|
|
3743 /* The handler can find the file name the same way we did. */
|
|
|
3744 return call2 (handler, Qset_visited_file_modtime, Qnil);
|
|
442
|
3745 else if (xemacs_stat ((char *) XSTRING_DATA (filename), &st) >= 0)
|
|
428
|
3746 current_buffer->modtime = st.st_mtime;
|
|
|
3747 }
|
|
|
3748
|
|
|
3749 return Qnil;
|
|
|
3750 }
|
|
|
3751
|
|
|
3752 static Lisp_Object
|
|
|
3753 auto_save_error (Lisp_Object condition_object, Lisp_Object ignored)
|
|
|
3754 {
|
|
|
3755 /* This function can call lisp */
|
|
|
3756 if (gc_in_progress)
|
|
|
3757 return Qnil;
|
|
|
3758 /* Don't try printing an error message after everything is gone! */
|
|
|
3759 if (preparing_for_armageddon)
|
|
|
3760 return Qnil;
|
|
|
3761 clear_echo_area (selected_frame (), Qauto_saving, 1);
|
|
|
3762 Fding (Qt, Qauto_save_error, Qnil);
|
|
|
3763 message ("Auto-saving...error for %s", XSTRING_DATA (current_buffer->name));
|
|
|
3764 Fsleep_for (make_int (1));
|
|
|
3765 message ("Auto-saving...error!for %s", XSTRING_DATA (current_buffer->name));
|
|
|
3766 Fsleep_for (make_int (1));
|
|
|
3767 message ("Auto-saving...error for %s", XSTRING_DATA (current_buffer->name));
|
|
|
3768 Fsleep_for (make_int (1));
|
|
|
3769 return Qnil;
|
|
|
3770 }
|
|
|
3771
|
|
|
3772 static Lisp_Object
|
|
|
3773 auto_save_1 (Lisp_Object ignored)
|
|
|
3774 {
|
|
|
3775 /* This function can call lisp */
|
|
|
3776 /* #### I think caller is protecting current_buffer? */
|
|
|
3777 struct stat st;
|
|
|
3778 Lisp_Object fn = current_buffer->filename;
|
|
|
3779 Lisp_Object a = current_buffer->auto_save_file_name;
|
|
|
3780
|
|
|
3781 if (!STRINGP (a))
|
|
|
3782 return (Qnil);
|
|
|
3783
|
|
|
3784 /* Get visited file's mode to become the auto save file's mode. */
|
|
|
3785 if (STRINGP (fn) &&
|
|
442
|
3786 xemacs_stat ((char *) XSTRING_DATA (fn), &st) >= 0)
|
|
428
|
3787 /* But make sure we can overwrite it later! */
|
|
|
3788 auto_save_mode_bits = st.st_mode | 0600;
|
|
|
3789 else
|
|
|
3790 /* default mode for auto-save files of buffers with no file is
|
|
|
3791 readable by owner only. This may annoy some small number of
|
|
|
3792 people, but the alternative removes all privacy from email. */
|
|
|
3793 auto_save_mode_bits = 0600;
|
|
|
3794
|
|
|
3795 return
|
|
|
3796 /* !!#### need to deal with this 'escape-quoted everywhere */
|
|
|
3797 Fwrite_region_internal (Qnil, Qnil, a, Qnil, Qlambda, Qnil,
|
|
|
3798 #ifdef MULE
|
|
|
3799 Qescape_quoted
|
|
|
3800 #else
|
|
|
3801 Qnil
|
|
|
3802 #endif
|
|
|
3803 );
|
|
|
3804 }
|
|
|
3805
|
|
|
3806 static Lisp_Object
|
|
|
3807 auto_save_expand_name_error (Lisp_Object condition_object, Lisp_Object ignored)
|
|
|
3808 {
|
|
|
3809 /* #### this function should spew an error message about not being
|
|
|
3810 able to open the .saves file. */
|
|
|
3811 return Qnil;
|
|
|
3812 }
|
|
|
3813
|
|
|
3814 static Lisp_Object
|
|
|
3815 auto_save_expand_name (Lisp_Object name)
|
|
|
3816 {
|
|
|
3817 struct gcpro gcpro1;
|
|
|
3818
|
|
|
3819 /* note that caller did NOT gc protect name, so we do it. */
|
|
|
3820 /* #### dmoore - this might not be necessary, if condition_case_1
|
|
|
3821 protects it. but I don't think it does. */
|
|
|
3822 GCPRO1 (name);
|
|
|
3823 RETURN_UNGCPRO (Fexpand_file_name (name, Qnil));
|
|
|
3824 }
|
|
|
3825
|
|
|
3826
|
|
|
3827 static Lisp_Object
|
|
|
3828 do_auto_save_unwind (Lisp_Object fd)
|
|
|
3829 {
|
|
|
3830 close (XINT (fd));
|
|
|
3831 return (fd);
|
|
|
3832 }
|
|
|
3833
|
|
|
3834 static Lisp_Object
|
|
|
3835 do_auto_save_unwind_2 (Lisp_Object old_auto_saving)
|
|
|
3836 {
|
|
|
3837 auto_saving = XINT (old_auto_saving);
|
|
|
3838 return Qnil;
|
|
|
3839 }
|
|
|
3840
|
|
|
3841 /* Fdo_auto_save() checks whether a GC is in progress when it is called,
|
|
|
3842 and if so, tries to avoid touching lisp objects.
|
|
|
3843
|
|
|
3844 The only time that Fdo_auto_save() is called while GC is in progress
|
|
|
3845 is if we're going down, as a result of an abort() or a kill signal.
|
|
|
3846 It's fairly important that we generate autosave files in that case!
|
|
|
3847 */
|
|
|
3848
|
|
|
3849 DEFUN ("do-auto-save", Fdo_auto_save, 0, 2, "", /*
|
|
|
3850 Auto-save all buffers that need it.
|
|
|
3851 This is all buffers that have auto-saving enabled
|
|
|
3852 and are changed since last auto-saved.
|
|
|
3853 Auto-saving writes the buffer into a file
|
|
|
3854 so that your editing is not lost if the system crashes.
|
|
|
3855 This file is not the file you visited; that changes only when you save.
|
|
|
3856 Normally we run the normal hook `auto-save-hook' before saving.
|
|
|
3857
|
|
|
3858 Non-nil first argument means do not print any message if successful.
|
|
|
3859 Non-nil second argument means save only current buffer.
|
|
|
3860 */
|
|
|
3861 (no_message, current_only))
|
|
|
3862 {
|
|
|
3863 /* This function can call lisp */
|
|
|
3864 struct buffer *b;
|
|
|
3865 Lisp_Object tail, buf;
|
|
|
3866 int auto_saved = 0;
|
|
|
3867 int do_handled_files;
|
|
|
3868 Lisp_Object oquit = Qnil;
|
|
|
3869 Lisp_Object listfile = Qnil;
|
|
|
3870 Lisp_Object old;
|
|
|
3871 int listdesc = -1;
|
|
|
3872 int speccount = specpdl_depth ();
|
|
|
3873 struct gcpro gcpro1, gcpro2, gcpro3;
|
|
|
3874
|
|
|
3875 XSETBUFFER (old, current_buffer);
|
|
|
3876 GCPRO3 (oquit, listfile, old);
|
|
|
3877 check_quit (); /* make Vquit_flag accurate */
|
|
|
3878 /* Ordinarily don't quit within this function,
|
|
|
3879 but don't make it impossible to quit (in case we get hung in I/O). */
|
|
|
3880 oquit = Vquit_flag;
|
|
|
3881 Vquit_flag = Qnil;
|
|
|
3882
|
|
|
3883 /* No further GCPRO needed, because (when it matters) all Lisp_Object
|
|
|
3884 variables point to non-strings reached from Vbuffer_alist. */
|
|
|
3885
|
|
|
3886 if (minibuf_level != 0 || preparing_for_armageddon)
|
|
|
3887 no_message = Qt;
|
|
|
3888
|
|
|
3889 run_hook (Qauto_save_hook);
|
|
|
3890
|
|
|
3891 if (STRINGP (Vauto_save_list_file_name))
|
|
|
3892 listfile = condition_case_1 (Qt,
|
|
|
3893 auto_save_expand_name,
|
|
|
3894 Vauto_save_list_file_name,
|
|
|
3895 auto_save_expand_name_error, Qnil);
|
|
|
3896
|
|
|
3897 /* Make sure auto_saving is reset. */
|
|
|
3898 record_unwind_protect (do_auto_save_unwind_2, make_int (auto_saving));
|
|
|
3899
|
|
|
3900 auto_saving = 1;
|
|
|
3901
|
|
|
3902 /* First, save all files which don't have handlers. If Emacs is
|
|
|
3903 crashing, the handlers may tweak what is causing Emacs to crash
|
|
|
3904 in the first place, and it would be a shame if Emacs failed to
|
|
|
3905 autosave perfectly ordinary files because it couldn't handle some
|
|
|
3906 ange-ftp'd file. */
|
|
|
3907 for (do_handled_files = 0; do_handled_files < 2; do_handled_files++)
|
|
|
3908 {
|
|
|
3909 for (tail = Vbuffer_alist;
|
|
|
3910 CONSP (tail);
|
|
|
3911 tail = XCDR (tail))
|
|
|
3912 {
|
|
|
3913 buf = XCDR (XCAR (tail));
|
|
|
3914 b = XBUFFER (buf);
|
|
|
3915
|
|
|
3916 if (!NILP (current_only)
|
|
|
3917 && b != current_buffer)
|
|
|
3918 continue;
|
|
|
3919
|
|
|
3920 /* Don't auto-save indirect buffers.
|
|
|
3921 The base buffer takes care of it. */
|
|
|
3922 if (b->base_buffer)
|
|
|
3923 continue;
|
|
|
3924
|
|
|
3925 /* Check for auto save enabled
|
|
|
3926 and file changed since last auto save
|
|
|
3927 and file changed since last real save. */
|
|
|
3928 if (STRINGP (b->auto_save_file_name)
|
|
|
3929 && BUF_SAVE_MODIFF (b) < BUF_MODIFF (b)
|
|
|
3930 && b->auto_save_modified < BUF_MODIFF (b)
|
|
|
3931 /* -1 means we've turned off autosaving for a while--see below. */
|
|
|
3932 && XINT (b->saved_size) >= 0
|
|
|
3933 && (do_handled_files
|
|
|
3934 || NILP (Ffind_file_name_handler (b->auto_save_file_name,
|
|
|
3935 Qwrite_region))))
|
|
|
3936 {
|
|
|
3937 EMACS_TIME before_time, after_time;
|
|
|
3938
|
|
|
3939 EMACS_GET_TIME (before_time);
|
|
|
3940 /* If we had a failure, don't try again for 20 minutes. */
|
|
|
3941 if (!preparing_for_armageddon
|
|
|
3942 && b->auto_save_failure_time >= 0
|
|
|
3943 && (EMACS_SECS (before_time) - b->auto_save_failure_time <
|
|
|
3944 1200))
|
|
|
3945 continue;
|
|
|
3946
|
|
|
3947 if (!preparing_for_armageddon &&
|
|
|
3948 (XINT (b->saved_size) * 10
|
|
|
3949 > (BUF_Z (b) - BUF_BEG (b)) * 13)
|
|
|
3950 /* A short file is likely to change a large fraction;
|
|
|
3951 spare the user annoying messages. */
|
|
|
3952 && XINT (b->saved_size) > 5000
|
|
|
3953 /* These messages are frequent and annoying for `*mail*'. */
|
|
|
3954 && !NILP (b->filename)
|
|
|
3955 && NILP (no_message)
|
|
|
3956 && disable_auto_save_when_buffer_shrinks)
|
|
|
3957 {
|
|
|
3958 /* It has shrunk too much; turn off auto-saving here.
|
|
|
3959 Unless we're about to crash, in which case auto-save it
|
|
|
3960 anyway.
|
|
|
3961 */
|
|
|
3962 message
|
|
|
3963 ("Buffer %s has shrunk a lot; auto save turned off there",
|
|
|
3964 XSTRING_DATA (b->name));
|
|
|
3965 /* Turn off auto-saving until there's a real save,
|
|
|
3966 and prevent any more warnings. */
|
|
|
3967 b->saved_size = make_int (-1);
|
|
|
3968 if (!gc_in_progress)
|
|
|
3969 Fsleep_for (make_int (1));
|
|
|
3970 continue;
|
|
|
3971 }
|
|
|
3972 set_buffer_internal (b);
|
|
|
3973 if (!auto_saved && NILP (no_message))
|
|
|
3974 {
|
|
442
|
3975 static const unsigned char *msg
|
|
|
3976 = (const unsigned char *) "Auto-saving...";
|
|
428
|
3977 echo_area_message (selected_frame (), msg, Qnil,
|
|
442
|
3978 0, strlen ((const char *) msg),
|
|
428
|
3979 Qauto_saving);
|
|
|
3980 }
|
|
|
3981
|
|
|
3982 /* Open the auto-save list file, if necessary.
|
|
|
3983 We only do this now so that the file only exists
|
|
|
3984 if we actually auto-saved any files. */
|
|
|
3985 if (!auto_saved && STRINGP (listfile) && listdesc < 0)
|
|
|
3986 {
|
|
|
3987 listdesc = open ((char *) XSTRING_DATA (listfile),
|
|
|
3988 O_WRONLY | O_TRUNC | O_CREAT | OPEN_BINARY,
|
|
|
3989 CREAT_MODE);
|
|
|
3990
|
|
|
3991 /* Arrange to close that file whether or not we get
|
|
|
3992 an error. */
|
|
|
3993 if (listdesc >= 0)
|
|
|
3994 record_unwind_protect (do_auto_save_unwind,
|
|
|
3995 make_int (listdesc));
|
|
|
3996 }
|
|
|
3997
|
|
|
3998 /* Record all the buffers that we are auto-saving in
|
|
|
3999 the special file that lists them. For each of
|
|
|
4000 these buffers, record visited name (if any) and
|
|
|
4001 auto save name. */
|
|
|
4002 if (listdesc >= 0)
|
|
|
4003 {
|
|
442
|
4004 const Extbyte *auto_save_file_name_ext;
|
|
428
|
4005 Extcount auto_save_file_name_ext_len;
|
|
|
4006
|
|
440
|
4007 TO_EXTERNAL_FORMAT (LISP_STRING, b->auto_save_file_name,
|
|
|
4008 ALLOCA, (auto_save_file_name_ext,
|
|
|
4009 auto_save_file_name_ext_len),
|
|
|
4010 Qfile_name);
|
|
428
|
4011 if (!NILP (b->filename))
|
|
|
4012 {
|
|
442
|
4013 const Extbyte *filename_ext;
|
|
428
|
4014 Extcount filename_ext_len;
|
|
|
4015
|
|
440
|
4016 TO_EXTERNAL_FORMAT (LISP_STRING, b->filename,
|
|
|
4017 ALLOCA, (filename_ext,
|
|
|
4018 filename_ext_len),
|
|
|
4019 Qfile_name);
|
|
428
|
4020 write (listdesc, filename_ext, filename_ext_len);
|
|
|
4021 }
|
|
|
4022 write (listdesc, "\n", 1);
|
|
|
4023 write (listdesc, auto_save_file_name_ext,
|
|
|
4024 auto_save_file_name_ext_len);
|
|
|
4025 write (listdesc, "\n", 1);
|
|
|
4026 }
|
|
|
4027
|
|
|
4028 /* dmoore - In a bad scenario we've set b=XBUFFER(buf)
|
|
|
4029 based on values in Vbuffer_alist. auto_save_1 may
|
|
|
4030 cause lisp handlers to run. Those handlers may kill
|
|
|
4031 the buffer and then GC. Since the buffer is killed,
|
|
|
4032 it's no longer in Vbuffer_alist so it might get reaped
|
|
|
4033 by the GC. We also need to protect tail. */
|
|
|
4034 /* #### There is probably a lot of other code which has
|
|
|
4035 pointers into buffers which may get blown away by
|
|
|
4036 handlers. */
|
|
|
4037 {
|
|
|
4038 struct gcpro ngcpro1, ngcpro2;
|
|
|
4039 NGCPRO2 (buf, tail);
|
|
|
4040 condition_case_1 (Qt,
|
|
|
4041 auto_save_1, Qnil,
|
|
|
4042 auto_save_error, Qnil);
|
|
|
4043 NUNGCPRO;
|
|
|
4044 }
|
|
|
4045 /* Handler killed our saved current-buffer! Pick any. */
|
|
|
4046 if (!BUFFER_LIVE_P (XBUFFER (old)))
|
|
|
4047 XSETBUFFER (old, current_buffer);
|
|
|
4048
|
|
|
4049 set_buffer_internal (XBUFFER (old));
|
|
|
4050 auto_saved++;
|
|
|
4051
|
|
|
4052 /* Handler killed their own buffer! */
|
|
|
4053 if (!BUFFER_LIVE_P(b))
|
|
|
4054 continue;
|
|
|
4055
|
|
|
4056 b->auto_save_modified = BUF_MODIFF (b);
|
|
|
4057 b->saved_size = make_int (BUF_SIZE (b));
|
|
|
4058 EMACS_GET_TIME (after_time);
|
|
|
4059 /* If auto-save took more than 60 seconds,
|
|
|
4060 assume it was an NFS failure that got a timeout. */
|
|
|
4061 if (EMACS_SECS (after_time) - EMACS_SECS (before_time) > 60)
|
|
|
4062 b->auto_save_failure_time = EMACS_SECS (after_time);
|
|
|
4063 }
|
|
|
4064 }
|
|
|
4065 }
|
|
|
4066
|
|
|
4067 /* Prevent another auto save till enough input events come in. */
|
|
|
4068 if (auto_saved)
|
|
|
4069 record_auto_save ();
|
|
|
4070
|
|
|
4071 /* If we didn't save anything into the listfile, remove the old
|
|
|
4072 one because nothing needed to be auto-saved. Do this afterwards
|
|
|
4073 rather than before in case we get a crash attempting to autosave
|
|
|
4074 (in that case we'd still want the old one around). */
|
|
|
4075 if (listdesc < 0 && !auto_saved && STRINGP (listfile))
|
|
|
4076 unlink ((char *) XSTRING_DATA (listfile));
|
|
|
4077
|
|
|
4078 /* Show "...done" only if the echo area would otherwise be empty. */
|
|
|
4079 if (auto_saved && NILP (no_message)
|
|
|
4080 && NILP (clear_echo_area (selected_frame (), Qauto_saving, 0)))
|
|
|
4081 {
|
|
442
|
4082 static const unsigned char *msg
|
|
|
4083 = (const unsigned char *)"Auto-saving...done";
|
|
428
|
4084 echo_area_message (selected_frame (), msg, Qnil, 0,
|
|
442
|
4085 strlen ((const char *) msg), Qauto_saving);
|
|
428
|
4086 }
|
|
|
4087
|
|
|
4088 Vquit_flag = oquit;
|
|
|
4089
|
|
|
4090 RETURN_UNGCPRO (unbind_to (speccount, Qnil));
|
|
|
4091 }
|
|
|
4092
|
|
|
4093 DEFUN ("set-buffer-auto-saved", Fset_buffer_auto_saved, 0, 0, 0, /*
|
|
|
4094 Mark current buffer as auto-saved with its current text.
|
|
|
4095 No auto-save file will be written until the buffer changes again.
|
|
|
4096 */
|
|
|
4097 ())
|
|
|
4098 {
|
|
|
4099 current_buffer->auto_save_modified = BUF_MODIFF (current_buffer);
|
|
|
4100 current_buffer->saved_size = make_int (BUF_SIZE (current_buffer));
|
|
|
4101 current_buffer->auto_save_failure_time = -1;
|
|
|
4102 return Qnil;
|
|
|
4103 }
|
|
|
4104
|
|
|
4105 DEFUN ("clear-buffer-auto-save-failure", Fclear_buffer_auto_save_failure, 0, 0, 0, /*
|
|
|
4106 Clear any record of a recent auto-save failure in the current buffer.
|
|
|
4107 */
|
|
|
4108 ())
|
|
|
4109 {
|
|
|
4110 current_buffer->auto_save_failure_time = -1;
|
|
|
4111 return Qnil;
|
|
|
4112 }
|
|
|
4113
|
|
|
4114 DEFUN ("recent-auto-save-p", Frecent_auto_save_p, 0, 0, 0, /*
|
|
|
4115 Return t if buffer has been auto-saved since last read in or saved.
|
|
|
4116 */
|
|
|
4117 ())
|
|
|
4118 {
|
|
|
4119 return (BUF_SAVE_MODIFF (current_buffer) <
|
|
|
4120 current_buffer->auto_save_modified) ? Qt : Qnil;
|
|
|
4121 }
|
|
|
4122
|
|
|
4123
|
|
|
4124 /************************************************************************/
|
|
|
4125 /* initialization */
|
|
|
4126 /************************************************************************/
|
|
|
4127
|
|
|
4128 void
|
|
|
4129 syms_of_fileio (void)
|
|
|
4130 {
|
|
|
4131 defsymbol (&Qexpand_file_name, "expand-file-name");
|
|
|
4132 defsymbol (&Qfile_truename, "file-truename");
|
|
|
4133 defsymbol (&Qsubstitute_in_file_name, "substitute-in-file-name");
|
|
|
4134 defsymbol (&Qdirectory_file_name, "directory-file-name");
|
|
|
4135 defsymbol (&Qfile_name_directory, "file-name-directory");
|
|
|
4136 defsymbol (&Qfile_name_nondirectory, "file-name-nondirectory");
|
|
|
4137 defsymbol (&Qunhandled_file_name_directory, "unhandled-file-name-directory");
|
|
|
4138 defsymbol (&Qfile_name_as_directory, "file-name-as-directory");
|
|
|
4139 defsymbol (&Qcopy_file, "copy-file");
|
|
|
4140 defsymbol (&Qmake_directory_internal, "make-directory-internal");
|
|
|
4141 defsymbol (&Qdelete_directory, "delete-directory");
|
|
|
4142 defsymbol (&Qdelete_file, "delete-file");
|
|
|
4143 defsymbol (&Qrename_file, "rename-file");
|
|
|
4144 defsymbol (&Qadd_name_to_file, "add-name-to-file");
|
|
|
4145 defsymbol (&Qmake_symbolic_link, "make-symbolic-link");
|
|
|
4146 defsymbol (&Qfile_exists_p, "file-exists-p");
|
|
|
4147 defsymbol (&Qfile_executable_p, "file-executable-p");
|
|
|
4148 defsymbol (&Qfile_readable_p, "file-readable-p");
|
|
|
4149 defsymbol (&Qfile_symlink_p, "file-symlink-p");
|
|
|
4150 defsymbol (&Qfile_writable_p, "file-writable-p");
|
|
|
4151 defsymbol (&Qfile_directory_p, "file-directory-p");
|
|
|
4152 defsymbol (&Qfile_regular_p, "file-regular-p");
|
|
|
4153 defsymbol (&Qfile_accessible_directory_p, "file-accessible-directory-p");
|
|
|
4154 defsymbol (&Qfile_modes, "file-modes");
|
|
|
4155 defsymbol (&Qset_file_modes, "set-file-modes");
|
|
|
4156 defsymbol (&Qfile_newer_than_file_p, "file-newer-than-file-p");
|
|
|
4157 defsymbol (&Qinsert_file_contents, "insert-file-contents");
|
|
|
4158 defsymbol (&Qwrite_region, "write-region");
|
|
|
4159 defsymbol (&Qverify_visited_file_modtime, "verify-visited-file-modtime");
|
|
|
4160 defsymbol (&Qset_visited_file_modtime, "set-visited-file-modtime");
|
|
|
4161 defsymbol (&Qcar_less_than_car, "car-less-than-car"); /* Vomitous! */
|
|
|
4162
|
|
|
4163 defsymbol (&Qauto_save_hook, "auto-save-hook");
|
|
|
4164 defsymbol (&Qauto_save_error, "auto-save-error");
|
|
|
4165 defsymbol (&Qauto_saving, "auto-saving");
|
|
|
4166
|
|
|
4167 defsymbol (&Qformat_decode, "format-decode");
|
|
|
4168 defsymbol (&Qformat_annotate_function, "format-annotate-function");
|
|
|
4169
|
|
|
4170 defsymbol (&Qcompute_buffer_file_truename, "compute-buffer-file-truename");
|
|
442
|
4171 DEFERROR_STANDARD (Qfile_error, Qio_error);
|
|
|
4172 DEFERROR_STANDARD (Qfile_already_exists, Qfile_error);
|
|
428
|
4173
|
|
|
4174 DEFSUBR (Ffind_file_name_handler);
|
|
|
4175
|
|
|
4176 DEFSUBR (Ffile_name_directory);
|
|
|
4177 DEFSUBR (Ffile_name_nondirectory);
|
|
|
4178 DEFSUBR (Funhandled_file_name_directory);
|
|
|
4179 DEFSUBR (Ffile_name_as_directory);
|
|
|
4180 DEFSUBR (Fdirectory_file_name);
|
|
|
4181 DEFSUBR (Fmake_temp_name);
|
|
|
4182 DEFSUBR (Fexpand_file_name);
|
|
|
4183 DEFSUBR (Ffile_truename);
|
|
|
4184 DEFSUBR (Fsubstitute_in_file_name);
|
|
|
4185 DEFSUBR (Fcopy_file);
|
|
|
4186 DEFSUBR (Fmake_directory_internal);
|
|
|
4187 DEFSUBR (Fdelete_directory);
|
|
|
4188 DEFSUBR (Fdelete_file);
|
|
|
4189 DEFSUBR (Frename_file);
|
|
|
4190 DEFSUBR (Fadd_name_to_file);
|
|
|
4191 DEFSUBR (Fmake_symbolic_link);
|
|
|
4192 #ifdef HPUX_NET
|
|
|
4193 DEFSUBR (Fsysnetunam);
|
|
|
4194 #endif /* HPUX_NET */
|
|
|
4195 DEFSUBR (Ffile_name_absolute_p);
|
|
|
4196 DEFSUBR (Ffile_exists_p);
|
|
|
4197 DEFSUBR (Ffile_executable_p);
|
|
|
4198 DEFSUBR (Ffile_readable_p);
|
|
|
4199 DEFSUBR (Ffile_writable_p);
|
|
|
4200 DEFSUBR (Ffile_symlink_p);
|
|
|
4201 DEFSUBR (Ffile_directory_p);
|
|
|
4202 DEFSUBR (Ffile_accessible_directory_p);
|
|
|
4203 DEFSUBR (Ffile_regular_p);
|
|
|
4204 DEFSUBR (Ffile_modes);
|
|
|
4205 DEFSUBR (Fset_file_modes);
|
|
|
4206 DEFSUBR (Fset_default_file_modes);
|
|
|
4207 DEFSUBR (Fdefault_file_modes);
|
|
|
4208 DEFSUBR (Funix_sync);
|
|
|
4209 DEFSUBR (Ffile_newer_than_file_p);
|
|
|
4210 DEFSUBR (Finsert_file_contents_internal);
|
|
|
4211 DEFSUBR (Fwrite_region_internal);
|
|
|
4212 DEFSUBR (Fcar_less_than_car); /* Vomitous! */
|
|
|
4213 DEFSUBR (Fcdr_less_than_cdr); /* Yeah oh yeah bucko .... */
|
|
|
4214 #if 0
|
|
|
4215 DEFSUBR (Fencrypt_string);
|
|
|
4216 DEFSUBR (Fdecrypt_string);
|
|
|
4217 #endif
|
|
|
4218 DEFSUBR (Fverify_visited_file_modtime);
|
|
|
4219 DEFSUBR (Fclear_visited_file_modtime);
|
|
|
4220 DEFSUBR (Fvisited_file_modtime);
|
|
|
4221 DEFSUBR (Fset_visited_file_modtime);
|
|
|
4222
|
|
|
4223 DEFSUBR (Fdo_auto_save);
|
|
|
4224 DEFSUBR (Fset_buffer_auto_saved);
|
|
|
4225 DEFSUBR (Fclear_buffer_auto_save_failure);
|
|
|
4226 DEFSUBR (Frecent_auto_save_p);
|
|
|
4227 }
|
|
|
4228
|
|
|
4229 void
|
|
|
4230 vars_of_fileio (void)
|
|
|
4231 {
|
|
|
4232 DEFVAR_LISP ("auto-save-file-format", &Vauto_save_file_format /*
|
|
|
4233 *Format in which to write auto-save files.
|
|
|
4234 Should be a list of symbols naming formats that are defined in `format-alist'.
|
|
|
4235 If it is t, which is the default, auto-save files are written in the
|
|
|
4236 same format as a regular save would use.
|
|
|
4237 */ );
|
|
|
4238 Vauto_save_file_format = Qt;
|
|
|
4239
|
|
|
4240 DEFVAR_LISP ("file-name-handler-alist", &Vfile_name_handler_alist /*
|
|
|
4241 *Alist of elements (REGEXP . HANDLER) for file names handled specially.
|
|
|
4242 If a file name matches REGEXP, then all I/O on that file is done by calling
|
|
|
4243 HANDLER.
|
|
|
4244
|
|
|
4245 The first argument given to HANDLER is the name of the I/O primitive
|
|
|
4246 to be handled; the remaining arguments are the arguments that were
|
|
|
4247 passed to that primitive. For example, if you do
|
|
|
4248 (file-exists-p FILENAME)
|
|
|
4249 and FILENAME is handled by HANDLER, then HANDLER is called like this:
|
|
|
4250 (funcall HANDLER 'file-exists-p FILENAME)
|
|
|
4251 The function `find-file-name-handler' checks this list for a handler
|
|
|
4252 for its argument.
|
|
|
4253 */ );
|
|
|
4254 Vfile_name_handler_alist = Qnil;
|
|
|
4255
|
|
|
4256 DEFVAR_LISP ("after-insert-file-functions", &Vafter_insert_file_functions /*
|
|
|
4257 A list of functions to be called at the end of `insert-file-contents'.
|
|
|
4258 Each is passed one argument, the number of bytes inserted. It should return
|
|
|
4259 the new byte count, and leave point the same. If `insert-file-contents' is
|
|
|
4260 intercepted by a handler from `file-name-handler-alist', that handler is
|
|
|
4261 responsible for calling the after-insert-file-functions if appropriate.
|
|
|
4262 */ );
|
|
|
4263 Vafter_insert_file_functions = Qnil;
|
|
|
4264
|
|
|
4265 DEFVAR_LISP ("write-region-annotate-functions",
|
|
|
4266 &Vwrite_region_annotate_functions /*
|
|
|
4267 A list of functions to be called at the start of `write-region'.
|
|
|
4268 Each is passed two arguments, START and END, as for `write-region'.
|
|
|
4269 It should return a list of pairs (POSITION . STRING) of strings to be
|
|
|
4270 effectively inserted at the specified positions of the file being written
|
|
|
4271 \(1 means to insert before the first byte written). The POSITIONs must be
|
|
|
4272 sorted into increasing order. If there are several functions in the list,
|
|
|
4273 the several lists are merged destructively.
|
|
|
4274 */ );
|
|
|
4275 Vwrite_region_annotate_functions = Qnil;
|
|
|
4276
|
|
|
4277 DEFVAR_LISP ("write-region-annotations-so-far",
|
|
|
4278 &Vwrite_region_annotations_so_far /*
|
|
|
4279 When an annotation function is called, this holds the previous annotations.
|
|
|
4280 These are the annotations made by other annotation functions
|
|
|
4281 that were already called. See also `write-region-annotate-functions'.
|
|
|
4282 */ );
|
|
|
4283 Vwrite_region_annotations_so_far = Qnil;
|
|
|
4284
|
|
|
4285 DEFVAR_LISP ("inhibit-file-name-handlers", &Vinhibit_file_name_handlers /*
|
|
|
4286 A list of file name handlers that temporarily should not be used.
|
|
|
4287 This applies only to the operation `inhibit-file-name-operation'.
|
|
|
4288 */ );
|
|
|
4289 Vinhibit_file_name_handlers = Qnil;
|
|
|
4290
|
|
|
4291 DEFVAR_LISP ("inhibit-file-name-operation", &Vinhibit_file_name_operation /*
|
|
|
4292 The operation for which `inhibit-file-name-handlers' is applicable.
|
|
|
4293 */ );
|
|
|
4294 Vinhibit_file_name_operation = Qnil;
|
|
|
4295
|
|
|
4296 DEFVAR_LISP ("auto-save-list-file-name", &Vauto_save_list_file_name /*
|
|
|
4297 File name in which we write a list of all auto save file names.
|
|
|
4298 */ );
|
|
|
4299 Vauto_save_list_file_name = Qnil;
|
|
|
4300
|
|
|
4301 DEFVAR_BOOL ("disable-auto-save-when-buffer-shrinks",
|
|
|
4302 &disable_auto_save_when_buffer_shrinks /*
|
|
|
4303 If non-nil, auto-saving is disabled when a buffer shrinks too much.
|
|
|
4304 This is to prevent you from losing your edits if you accidentally
|
|
|
4305 delete a large chunk of the buffer and don't notice it until too late.
|
|
|
4306 Saving the buffer normally turns auto-save back on.
|
|
|
4307 */ );
|
|
|
4308 disable_auto_save_when_buffer_shrinks = 1;
|
|
|
4309
|
|
|
4310 DEFVAR_LISP ("directory-sep-char", &Vdirectory_sep_char /*
|
|
|
4311 Directory separator character for built-in functions that return file names.
|
|
|
4312 The value should be either ?/ or ?\\ (any other value is treated as ?\\).
|
|
|
4313 This variable affects the built-in functions only on Windows,
|
|
|
4314 on other platforms, it is initialized so that Lisp code can find out
|
|
|
4315 what the normal separator is.
|
|
|
4316 */ );
|
|
442
|
4317 #ifdef WIN32_NATIVE
|
|
432
|
4318 Vdirectory_sep_char = make_char ('\\');
|
|
|
4319 #else
|
|
442
|
4320 Vdirectory_sep_char = make_char ('/');
|
|
432
|
4321 #endif
|
|
442
|
4322
|
|
|
4323 reinit_vars_of_fileio ();
|
|
428
|
4324 }
|
|
442
|
4325
|
|
|
4326 void
|
|
|
4327 reinit_vars_of_fileio (void)
|
|
|
4328 {
|
|
|
4329 /* We want temp_name_rand to be initialized to a value likely to be
|
|
|
4330 unique to the process, not to the executable. The danger is that
|
|
|
4331 two different XEmacs processes using the same binary on different
|
|
|
4332 machines creating temp files in the same directory will be
|
|
|
4333 unlucky enough to have the same pid. If we randomize using
|
|
|
4334 process startup time, then in practice they will be unlikely to
|
|
|
4335 collide. We use the microseconds field so that scripts that start
|
|
|
4336 simultaneous XEmacs processes on multiple machines will have less
|
|
|
4337 chance of collision. */
|
|
|
4338 {
|
|
|
4339 EMACS_TIME thyme;
|
|
|
4340
|
|
|
4341 EMACS_GET_TIME (thyme);
|
|
|
4342 temp_name_rand = (unsigned int) (EMACS_SECS (thyme) ^ EMACS_USECS (thyme));
|
|
|
4343 }
|
|
|
4344 }
|
