|
0
|
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. */
|
|
211
|
23 /* More syncing: FSF Emacs 19.34.6 by Marc Paquette <marcpa@cam.org> */
|
|
0
|
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 */
|
|
70
|
36 #ifdef MULE
|
|
|
37 #include "mule-coding.h"
|
|
|
38 #endif
|
|
0
|
39
|
|
2
|
40 #ifdef HAVE_LIBGEN_H /* Must come before sysfile.h */
|
|
|
41 #include <libgen.h>
|
|
|
42 #endif
|
|
0
|
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>
|
|
211
|
53 #endif /* HPUX_PRE_8_0 */
|
|
|
54 #endif /* HPUX */
|
|
|
55
|
|
|
56 #ifdef WINDOWSNT
|
|
|
57 #define NOMINMAX 1
|
|
|
58 #include <windows.h>
|
|
|
59 #include <stdlib.h>
|
|
|
60 #include <fcntl.h>
|
|
|
61 #endif /* not WINDOWSNT */
|
|
|
62
|
|
|
63 #ifdef DOS_NT
|
|
|
64 #define CORRECT_DIR_SEPS(s) \
|
|
|
65 do { if ('/' == DIRECTORY_SEP) dostounix_filename (s); \
|
|
|
66 else unixtodos_filename (s); \
|
|
|
67 } while (0)
|
|
|
68 /* On Windows, drive letters must be alphabetic - on DOS, the Netware
|
|
|
69 redirector allows the six letters between 'Z' and 'a' as well. */
|
|
|
70 #ifdef MSDOS
|
|
|
71 #define IS_DRIVE(x) ((x) >= 'A' && (x) <= 'z')
|
|
0
|
72 #endif
|
|
211
|
73 #ifdef WINDOWSNT
|
|
|
74 #define IS_DRIVE(x) isalpha (x)
|
|
|
75 #endif
|
|
|
76 /* Need to lower-case the drive letter, or else expanded
|
|
|
77 filenames will sometimes compare inequal, because
|
|
|
78 `expand-file-name' doesn't always down-case the drive letter. */
|
|
|
79 #define DRIVE_LETTER(x) (tolower (x))
|
|
|
80 #endif /* DOS_NT */
|
|
0
|
81
|
|
|
82 /* Nonzero during writing of auto-save files */
|
|
|
83 static int auto_saving;
|
|
|
84
|
|
|
85 /* Set by auto_save_1 to mode of original file so Fwrite_region_internal
|
|
|
86 will create a new file with the same mode as the original */
|
|
|
87 static int auto_save_mode_bits;
|
|
|
88
|
|
151
|
89 /* Alist of elements (REGEXP . HANDLER) for file names
|
|
0
|
90 whose I/O is done with a special handler. */
|
|
|
91 Lisp_Object Vfile_name_handler_alist;
|
|
|
92
|
|
|
93 /* Format for auto-save files */
|
|
|
94 Lisp_Object Vauto_save_file_format;
|
|
|
95
|
|
|
96 /* Lisp functions for translating file formats */
|
|
|
97 Lisp_Object Qformat_decode, Qformat_annotate_function;
|
|
|
98
|
|
|
99 /* Functions to be called to process text properties in inserted file. */
|
|
|
100 Lisp_Object Vafter_insert_file_functions;
|
|
|
101
|
|
|
102 /* Functions to be called to create text property annotations for file. */
|
|
|
103 Lisp_Object Vwrite_region_annotate_functions;
|
|
|
104
|
|
|
105 /* During build_annotations, each time an annotation function is called,
|
|
|
106 this holds the annotations made by the previous functions. */
|
|
|
107 Lisp_Object Vwrite_region_annotations_so_far;
|
|
|
108
|
|
|
109 /* File name in which we write a list of all our auto save files. */
|
|
|
110 Lisp_Object Vauto_save_list_file_name;
|
|
|
111
|
|
|
112 int disable_auto_save_when_buffer_shrinks;
|
|
|
113
|
|
|
114 Lisp_Object Qfile_name_handler_alist;
|
|
|
115
|
|
211
|
116 /* Syncing with FSF 19.34.6 note: although labelled as NT-specific, these
|
|
|
117 two lisp variables are compiled in even when not defined(DOS_NT).
|
|
|
118 Need to check if we should bracket them between #ifdef's.
|
|
|
119 --marcpa */
|
|
|
120 /* On NT, specifies the directory separator character, used (eg.) when
|
|
|
121 expanding file names. This can be bound to / or \.
|
|
|
122
|
|
|
123 This needs to be initialized statically, because file name functions
|
|
|
124 are called during initialization. */
|
|
235
|
125 Lisp_Object Vdirectory_sep_char;
|
|
|
126
|
|
|
127 #ifdef DOS_NT
|
|
|
128 /* Until we can figure out how to deal with the functions in this file in
|
|
|
129 a civilized fashion, this will remain #ifdef'ed out. -slb */
|
|
211
|
130 /* For the benefit of backwards compatability with earlier versions of
|
|
|
131 Emacs on DOS_NT, provide a way to disable the REPLACE option support
|
|
|
132 in insert-file-contents. */
|
|
|
133 Lisp_Object Vinsert_file_contents_allow_replace;
|
|
|
134 #endif /* DOS_NT */
|
|
|
135
|
|
0
|
136 /* These variables describe handlers that have "already" had a chance
|
|
|
137 to handle the current operation.
|
|
|
138
|
|
|
139 Vinhibit_file_name_handlers is a list of file name handlers.
|
|
|
140 Vinhibit_file_name_operation is the operation being handled.
|
|
|
141 If we try to handle that operation, we ignore those handlers. */
|
|
|
142
|
|
|
143 static Lisp_Object Vinhibit_file_name_handlers;
|
|
|
144 static Lisp_Object Vinhibit_file_name_operation;
|
|
|
145
|
|
|
146 Lisp_Object Qfile_error, Qfile_already_exists;
|
|
|
147
|
|
|
148 Lisp_Object Qauto_save_hook;
|
|
|
149 Lisp_Object Qauto_save_error;
|
|
|
150 Lisp_Object Qauto_saving;
|
|
|
151
|
|
|
152 Lisp_Object Qcar_less_than_car;
|
|
|
153
|
|
|
154 Lisp_Object Qcompute_buffer_file_truename;
|
|
|
155
|
|
|
156 /* signal a file error when errno contains a meaningful value. */
|
|
|
157
|
|
|
158 DOESNT_RETURN
|
|
|
159 report_file_error (CONST char *string, Lisp_Object data)
|
|
|
160 {
|
|
114
|
161 /* #### dmoore - This uses current_buffer, better make sure no one
|
|
|
162 has GC'd the current buffer. File handlers are giving me a headache
|
|
|
163 maybe I'll just always protect current_buffer around all of those
|
|
|
164 calls. */
|
|
|
165
|
|
0
|
166 signal_error (Qfile_error,
|
|
|
167 Fcons (build_translated_string (string),
|
|
151
|
168 Fcons (lisp_strerror (errno), data)));
|
|
0
|
169 }
|
|
|
170
|
|
|
171 void
|
|
|
172 maybe_report_file_error (CONST char *string, Lisp_Object data,
|
|
|
173 Lisp_Object class, Error_behavior errb)
|
|
|
174 {
|
|
|
175 /* Optimization: */
|
|
|
176 if (ERRB_EQ (errb, ERROR_ME_NOT))
|
|
|
177 return;
|
|
|
178
|
|
|
179 maybe_signal_error (Qfile_error,
|
|
|
180 Fcons (build_translated_string (string),
|
|
151
|
181 Fcons (lisp_strerror (errno), data)),
|
|
0
|
182 class, errb);
|
|
|
183 }
|
|
|
184
|
|
|
185 /* signal a file error when errno does not contain a meaningful value. */
|
|
|
186
|
|
|
187 DOESNT_RETURN
|
|
|
188 signal_file_error (CONST char *string, Lisp_Object data)
|
|
|
189 {
|
|
|
190 signal_error (Qfile_error,
|
|
|
191 list2 (build_translated_string (string), data));
|
|
|
192 }
|
|
|
193
|
|
|
194 void
|
|
|
195 maybe_signal_file_error (CONST char *string, Lisp_Object data,
|
|
|
196 Lisp_Object class, Error_behavior errb)
|
|
|
197 {
|
|
|
198 /* Optimization: */
|
|
|
199 if (ERRB_EQ (errb, ERROR_ME_NOT))
|
|
|
200 return;
|
|
|
201 maybe_signal_error (Qfile_error,
|
|
|
202 list2 (build_translated_string (string), data),
|
|
|
203 class, errb);
|
|
|
204 }
|
|
|
205
|
|
|
206 DOESNT_RETURN
|
|
|
207 signal_double_file_error (CONST char *string1, CONST char *string2,
|
|
|
208 Lisp_Object data)
|
|
|
209 {
|
|
|
210 signal_error (Qfile_error,
|
|
|
211 list3 (build_translated_string (string1),
|
|
|
212 build_translated_string (string2),
|
|
|
213 data));
|
|
|
214 }
|
|
|
215
|
|
|
216 void
|
|
|
217 maybe_signal_double_file_error (CONST char *string1, CONST char *string2,
|
|
|
218 Lisp_Object data, Lisp_Object class,
|
|
|
219 Error_behavior errb)
|
|
|
220 {
|
|
|
221 /* Optimization: */
|
|
|
222 if (ERRB_EQ (errb, ERROR_ME_NOT))
|
|
|
223 return;
|
|
|
224 maybe_signal_error (Qfile_error,
|
|
|
225 list3 (build_translated_string (string1),
|
|
|
226 build_translated_string (string2),
|
|
|
227 data),
|
|
|
228 class, errb);
|
|
|
229 }
|
|
|
230
|
|
|
231 DOESNT_RETURN
|
|
|
232 signal_double_file_error_2 (CONST char *string1, CONST char *string2,
|
|
|
233 Lisp_Object data1, Lisp_Object data2)
|
|
|
234 {
|
|
|
235 signal_error (Qfile_error,
|
|
151
|
236 list4 (build_translated_string (string1),
|
|
0
|
237 build_translated_string (string2),
|
|
|
238 data1, data2));
|
|
|
239 }
|
|
|
240
|
|
|
241 void
|
|
|
242 maybe_signal_double_file_error_2 (CONST char *string1, CONST char *string2,
|
|
|
243 Lisp_Object data1, Lisp_Object data2,
|
|
|
244 Lisp_Object class, Error_behavior errb)
|
|
|
245 {
|
|
|
246 /* Optimization: */
|
|
|
247 if (ERRB_EQ (errb, ERROR_ME_NOT))
|
|
|
248 return;
|
|
|
249 maybe_signal_error (Qfile_error,
|
|
151
|
250 list4 (build_translated_string (string1),
|
|
0
|
251 build_translated_string (string2),
|
|
|
252 data1, data2),
|
|
|
253 class, errb);
|
|
|
254 }
|
|
|
255
|
|
151
|
256
|
|
|
257 /* Just like strerror(3), except return a lisp string instead of char *.
|
|
|
258 The string needs to be converted since it may be localized.
|
|
|
259 Perhaps this should use strerror-coding-system instead? */
|
|
|
260 Lisp_Object
|
|
|
261 lisp_strerror (int errnum)
|
|
|
262 {
|
|
|
263 return build_ext_string (strerror (errnum), FORMAT_NATIVE);
|
|
|
264 }
|
|
|
265
|
|
0
|
266 static Lisp_Object
|
|
|
267 close_file_unwind (Lisp_Object fd)
|
|
|
268 {
|
|
|
269 if (CONSP (fd))
|
|
|
270 {
|
|
|
271 if (INTP (XCAR (fd)))
|
|
|
272 close (XINT (XCAR (fd)));
|
|
|
273
|
|
|
274 free_cons (XCONS (fd));
|
|
|
275 }
|
|
|
276 else
|
|
|
277 close (XINT (fd));
|
|
|
278
|
|
|
279 return Qnil;
|
|
|
280 }
|
|
|
281
|
|
|
282 static Lisp_Object
|
|
|
283 close_stream_unwind (Lisp_Object stream)
|
|
|
284 {
|
|
|
285 Lstream_close (XLSTREAM (stream));
|
|
|
286 return Qnil;
|
|
|
287 }
|
|
|
288
|
|
|
289 /* Restore point, having saved it as a marker. */
|
|
|
290
|
|
|
291 static Lisp_Object
|
|
|
292 restore_point_unwind (Lisp_Object point_marker)
|
|
|
293 {
|
|
|
294 BUF_SET_PT (current_buffer, marker_position (point_marker));
|
|
173
|
295 return Fset_marker (point_marker, Qnil, Qnil);
|
|
0
|
296 }
|
|
|
297
|
|
|
298 /* Versions of read() and write() that allow quitting out of the actual
|
|
|
299 I/O. We don't use immediate_quit (i.e. direct longjmp() out of the
|
|
|
300 signal handler) because that's way too losing.
|
|
|
301
|
|
|
302 (#### Actually, longjmp()ing out of the signal handler may not be
|
|
|
303 as losing as I thought. See sys_do_signal() in sysdep.c.)
|
|
|
304
|
|
|
305 Solaris include files declare the return value as ssize_t.
|
|
|
306 Is that standard? */
|
|
|
307 int
|
|
|
308 read_allowing_quit (int fildes, void *buf, unsigned int nbyte)
|
|
|
309 {
|
|
|
310 int nread;
|
|
|
311 QUIT;
|
|
|
312
|
|
|
313 nread = sys_read_1 (fildes, buf, nbyte, 1);
|
|
|
314 return nread;
|
|
|
315 }
|
|
|
316
|
|
|
317 int
|
|
|
318 write_allowing_quit (int fildes, CONST void *buf, unsigned int nbyte)
|
|
|
319 {
|
|
|
320 int nread;
|
|
|
321
|
|
|
322 QUIT;
|
|
|
323 nread = sys_write_1 (fildes, buf, nbyte, 1);
|
|
|
324 return nread;
|
|
|
325 }
|
|
|
326
|
|
|
327
|
|
|
328 Lisp_Object Qexpand_file_name;
|
|
|
329 Lisp_Object Qfile_truename;
|
|
|
330 Lisp_Object Qsubstitute_in_file_name;
|
|
|
331 Lisp_Object Qdirectory_file_name;
|
|
|
332 Lisp_Object Qfile_name_directory;
|
|
|
333 Lisp_Object Qfile_name_nondirectory;
|
|
|
334 Lisp_Object Qunhandled_file_name_directory;
|
|
|
335 Lisp_Object Qfile_name_as_directory;
|
|
|
336 Lisp_Object Qcopy_file;
|
|
|
337 Lisp_Object Qmake_directory_internal;
|
|
|
338 Lisp_Object Qdelete_directory;
|
|
|
339 Lisp_Object Qdelete_file;
|
|
|
340 Lisp_Object Qrename_file;
|
|
|
341 Lisp_Object Qadd_name_to_file;
|
|
|
342 Lisp_Object Qmake_symbolic_link;
|
|
|
343 Lisp_Object Qfile_exists_p;
|
|
|
344 Lisp_Object Qfile_executable_p;
|
|
|
345 Lisp_Object Qfile_readable_p;
|
|
|
346 Lisp_Object Qfile_symlink_p;
|
|
|
347 Lisp_Object Qfile_writable_p;
|
|
|
348 Lisp_Object Qfile_directory_p;
|
|
|
349 Lisp_Object Qfile_regular_p;
|
|
|
350 Lisp_Object Qfile_accessible_directory_p;
|
|
|
351 Lisp_Object Qfile_modes;
|
|
|
352 Lisp_Object Qset_file_modes;
|
|
|
353 Lisp_Object Qfile_newer_than_file_p;
|
|
|
354 Lisp_Object Qinsert_file_contents;
|
|
|
355 Lisp_Object Qwrite_region;
|
|
|
356 Lisp_Object Qverify_visited_file_modtime;
|
|
|
357 Lisp_Object Qset_visited_file_modtime;
|
|
|
358
|
|
|
359 /* If FILENAME is handled specially on account of its syntax,
|
|
|
360 return its handler function. Otherwise, return nil. */
|
|
|
361
|
|
20
|
362 DEFUN ("find-file-name-handler", Ffind_file_name_handler, 1, 2, 0, /*
|
|
0
|
363 Return FILENAME's handler function for OPERATION, if it has one.
|
|
|
364 Otherwise, return nil.
|
|
|
365 A file name is handled if one of the regular expressions in
|
|
|
366 `file-name-handler-alist' matches it.
|
|
|
367
|
|
|
368 If OPERATION equals `inhibit-file-name-operation', then we ignore
|
|
|
369 any handlers that are members of `inhibit-file-name-handlers',
|
|
|
370 but we still do run any other handlers. This lets handlers
|
|
|
371 use the standard functions without calling themselves recursively.
|
|
20
|
372 */
|
|
|
373 (filename, operation))
|
|
0
|
374 {
|
|
116
|
375 /* This function does not GC */
|
|
0
|
376 /* This function must not munge the match data. */
|
|
|
377 Lisp_Object chain, inhibited_handlers;
|
|
|
378
|
|
|
379 CHECK_STRING (filename);
|
|
|
380
|
|
|
381 if (EQ (operation, Vinhibit_file_name_operation))
|
|
|
382 inhibited_handlers = Vinhibit_file_name_handlers;
|
|
|
383 else
|
|
|
384 inhibited_handlers = Qnil;
|
|
|
385
|
|
227
|
386 EXTERNAL_LIST_LOOP (chain, Vfile_name_handler_alist)
|
|
0
|
387 {
|
|
|
388 Lisp_Object elt = XCAR (chain);
|
|
|
389 if (CONSP (elt))
|
|
|
390 {
|
|
227
|
391 Lisp_Object string = XCAR (elt);
|
|
0
|
392 if (STRINGP (string)
|
|
|
393 && (fast_lisp_string_match (string, filename) >= 0))
|
|
|
394 {
|
|
|
395 Lisp_Object handler = XCDR (elt);
|
|
|
396 if (NILP (Fmemq (handler, inhibited_handlers)))
|
|
173
|
397 return handler;
|
|
0
|
398 }
|
|
|
399 }
|
|
|
400 QUIT;
|
|
|
401 }
|
|
|
402 return Qnil;
|
|
|
403 }
|
|
|
404
|
|
|
405 static Lisp_Object
|
|
|
406 call2_check_string (Lisp_Object fn, Lisp_Object arg0, Lisp_Object arg1)
|
|
|
407 {
|
|
116
|
408 /* This function can call lisp */
|
|
0
|
409 Lisp_Object result = call2 (fn, arg0, arg1);
|
|
|
410 CHECK_STRING (result);
|
|
173
|
411 return result;
|
|
0
|
412 }
|
|
|
413
|
|
|
414 static Lisp_Object
|
|
114
|
415 call2_check_string_or_nil (Lisp_Object fn, Lisp_Object arg0, Lisp_Object arg1)
|
|
|
416 {
|
|
116
|
417 /* This function can call lisp */
|
|
114
|
418 Lisp_Object result = call2 (fn, arg0, arg1);
|
|
|
419 if (!NILP (result))
|
|
|
420 CHECK_STRING (result);
|
|
173
|
421 return result;
|
|
114
|
422 }
|
|
|
423
|
|
|
424 static Lisp_Object
|
|
151
|
425 call3_check_string (Lisp_Object fn, Lisp_Object arg0,
|
|
0
|
426 Lisp_Object arg1, Lisp_Object arg2)
|
|
|
427 {
|
|
116
|
428 /* This function can call lisp */
|
|
0
|
429 Lisp_Object result = call3 (fn, arg0, arg1, arg2);
|
|
|
430 CHECK_STRING (result);
|
|
173
|
431 return result;
|
|
0
|
432 }
|
|
|
433
|
|
|
434
|
|
20
|
435 DEFUN ("file-name-directory", Ffile_name_directory, 1, 1, 0, /*
|
|
0
|
436 Return the directory component in file name NAME.
|
|
|
437 Return nil if NAME does not include a directory.
|
|
|
438 Otherwise return a directory spec.
|
|
209
|
439 Given a Unix syntax file name, returns a string ending in slash.
|
|
20
|
440 */
|
|
|
441 (file))
|
|
0
|
442 {
|
|
120
|
443 /* This function can GC. GC checked 1997.04.06. */
|
|
0
|
444 Bufbyte *beg;
|
|
|
445 Bufbyte *p;
|
|
|
446 Lisp_Object handler;
|
|
|
447
|
|
|
448 CHECK_STRING (file);
|
|
|
449
|
|
|
450 /* If the file name has special constructs in it,
|
|
|
451 call the corresponding file handler. */
|
|
|
452 handler = Ffind_file_name_handler (file, Qfile_name_directory);
|
|
|
453 if (!NILP (handler))
|
|
173
|
454 return call2_check_string_or_nil (handler, Qfile_name_directory, file);
|
|
0
|
455
|
|
|
456 #ifdef FILE_SYSTEM_CASE
|
|
|
457 file = FILE_SYSTEM_CASE (file);
|
|
|
458 #endif
|
|
16
|
459 beg = XSTRING_DATA (file);
|
|
|
460 p = beg + XSTRING_LENGTH (file);
|
|
0
|
461
|
|
211
|
462 while (p != beg && !IS_ANY_SEP (p[-1])
|
|
|
463 #ifdef DOS_NT
|
|
|
464 /* only recognise drive specifier at beginning */
|
|
|
465 && !(p[-1] == ':' && p == beg + 2)
|
|
|
466 #endif
|
|
|
467 ) p--;
|
|
0
|
468
|
|
|
469 if (p == beg)
|
|
|
470 return Qnil;
|
|
|
471 #ifdef DOS_NT
|
|
|
472 /* Expansion of "c:" to drive and default directory. */
|
|
|
473 /* (NT does the right thing.) */
|
|
|
474 if (p == beg + 2 && beg[1] == ':')
|
|
|
475 {
|
|
|
476 /* MAXPATHLEN+1 is guaranteed to be enough space for getdefdir. */
|
|
211
|
477 Bufbyte *res = alloca (MAXPATHLEN + 1);
|
|
|
478 if (getdefdir (toupper (*beg) - 'A' + 1, res))
|
|
0
|
479 {
|
|
211
|
480 if (!IS_DIRECTORY_SEP (res[strlen ((char *) res) - 1]))
|
|
0
|
481 strcat ((char *) res, "/");
|
|
|
482 beg = res;
|
|
|
483 p = beg + strlen ((char *) beg);
|
|
|
484 }
|
|
|
485 }
|
|
211
|
486 CORRECT_DIR_SEPS (beg);
|
|
0
|
487 #endif /* DOS_NT */
|
|
|
488 return make_string (beg, p - beg);
|
|
|
489 }
|
|
|
490
|
|
20
|
491 DEFUN ("file-name-nondirectory", Ffile_name_nondirectory, 1, 1, 0, /*
|
|
0
|
492 Return file name NAME sans its directory.
|
|
|
493 For example, in a Unix-syntax file name,
|
|
|
494 this is everything after the last slash,
|
|
|
495 or the entire name if it contains no slash.
|
|
20
|
496 */
|
|
|
497 (file))
|
|
0
|
498 {
|
|
120
|
499 /* This function can GC. GC checked 1997.04.06. */
|
|
0
|
500 Bufbyte *beg, *p, *end;
|
|
|
501 Lisp_Object handler;
|
|
|
502
|
|
|
503 CHECK_STRING (file);
|
|
|
504
|
|
|
505 /* If the file name has special constructs in it,
|
|
|
506 call the corresponding file handler. */
|
|
|
507 handler = Ffind_file_name_handler (file, Qfile_name_nondirectory);
|
|
|
508 if (!NILP (handler))
|
|
173
|
509 return call2_check_string (handler, Qfile_name_nondirectory, file);
|
|
0
|
510
|
|
16
|
511 beg = XSTRING_DATA (file);
|
|
|
512 end = p = beg + XSTRING_LENGTH (file);
|
|
0
|
513
|
|
211
|
514 while (p != beg && !IS_ANY_SEP (p[-1])
|
|
|
515 #ifdef DOS_NT
|
|
|
516 /* only recognise drive specifier at beginning */
|
|
|
517 && !(p[-1] == ':' && p == beg + 2)
|
|
|
518 #endif
|
|
|
519 ) p--;
|
|
0
|
520
|
|
|
521 return make_string (p, end - p);
|
|
|
522 }
|
|
|
523
|
|
20
|
524 DEFUN ("unhandled-file-name-directory", Funhandled_file_name_directory, 1, 1, 0, /*
|
|
0
|
525 Return a directly usable directory name somehow associated with FILENAME.
|
|
|
526 A `directly usable' directory name is one that may be used without the
|
|
|
527 intervention of any file handler.
|
|
|
528 If FILENAME is a directly usable file itself, return
|
|
|
529 (file-name-directory FILENAME).
|
|
|
530 The `call-process' and `start-process' functions use this function to
|
|
|
531 get a current directory to run processes in.
|
|
20
|
532 */
|
|
70
|
533 (filename))
|
|
0
|
534 {
|
|
120
|
535 /* This function can GC. GC checked 1997.04.06. */
|
|
0
|
536 Lisp_Object handler;
|
|
|
537
|
|
|
538 /* If the file name has special constructs in it,
|
|
|
539 call the corresponding file handler. */
|
|
|
540 handler = Ffind_file_name_handler (filename, Qunhandled_file_name_directory);
|
|
|
541 if (!NILP (handler))
|
|
|
542 return call2 (handler, Qunhandled_file_name_directory,
|
|
|
543 filename);
|
|
|
544
|
|
|
545 return Ffile_name_directory (filename);
|
|
|
546 }
|
|
|
547
|
|
|
548
|
|
|
549 static char *
|
|
|
550 file_name_as_directory (char *out, char *in)
|
|
|
551 {
|
|
|
552 int size = strlen (in) - 1;
|
|
|
553
|
|
|
554 strcpy (out, in);
|
|
|
555
|
|
|
556 /* For Unix syntax, Append a slash if necessary */
|
|
|
557 if (!IS_ANY_SEP (out[size]))
|
|
|
558 {
|
|
|
559 out[size + 1] = DIRECTORY_SEP;
|
|
|
560 out[size + 2] = '\0';
|
|
|
561 }
|
|
213
|
562 #ifdef DOS_NT
|
|
|
563 CORRECT_DIR_SEPS (out);
|
|
|
564 #endif
|
|
0
|
565 return out;
|
|
|
566 }
|
|
|
567
|
|
20
|
568 DEFUN ("file-name-as-directory", Ffile_name_as_directory, 1, 1, 0, /*
|
|
0
|
569 Return a string representing file FILENAME interpreted as a directory.
|
|
|
570 This operation exists because a directory is also a file, but its name as
|
|
|
571 a directory is different from its name as a file.
|
|
|
572 The result can be used as the value of `default-directory'
|
|
|
573 or passed as second argument to `expand-file-name'.
|
|
|
574 For a Unix-syntax file name, just appends a slash.
|
|
20
|
575 */
|
|
|
576 (file))
|
|
0
|
577 {
|
|
120
|
578 /* This function can GC. GC checked 1997.04.06. */
|
|
0
|
579 char *buf;
|
|
|
580 Lisp_Object handler;
|
|
|
581
|
|
|
582 CHECK_STRING (file);
|
|
|
583
|
|
|
584 /* If the file name has special constructs in it,
|
|
|
585 call the corresponding file handler. */
|
|
|
586 handler = Ffind_file_name_handler (file, Qfile_name_as_directory);
|
|
|
587 if (!NILP (handler))
|
|
173
|
588 return call2_check_string (handler, Qfile_name_as_directory, file);
|
|
0
|
589
|
|
16
|
590 buf = (char *) alloca (XSTRING_LENGTH (file) + 10);
|
|
0
|
591 return build_string (file_name_as_directory
|
|
16
|
592 (buf, (char *) XSTRING_DATA (file)));
|
|
0
|
593 }
|
|
|
594
|
|
|
595 /*
|
|
|
596 * Convert from directory name to filename.
|
|
211
|
597 * On UNIX, it's simple: just make sure there isn't a terminating /
|
|
0
|
598
|
|
|
599 * Value is nonzero if the string output is different from the input.
|
|
|
600 */
|
|
|
601
|
|
|
602 static int
|
|
|
603 directory_file_name (CONST char *src, char *dst)
|
|
|
604 {
|
|
|
605 long slen;
|
|
|
606
|
|
|
607 slen = strlen (src);
|
|
|
608 /* Process as Unix format: just remove any final slash.
|
|
|
609 But leave "/" unchanged; do not change it to "". */
|
|
|
610 strcpy (dst, src);
|
|
|
611 #ifdef APOLLO
|
|
|
612 /* Handle // as root for apollo's. */
|
|
|
613 if ((slen > 2 && dst[slen - 1] == '/')
|
|
|
614 || (slen > 1 && dst[0] != '/' && dst[slen - 1] == '/'))
|
|
|
615 dst[slen - 1] = 0;
|
|
|
616 #else
|
|
151
|
617 if (slen > 1
|
|
0
|
618 && IS_DIRECTORY_SEP (dst[slen - 1])
|
|
|
619 #ifdef DOS_NT
|
|
|
620 && !IS_ANY_SEP (dst[slen - 2])
|
|
211
|
621 #endif /* DOS_NT */
|
|
0
|
622 )
|
|
|
623 dst[slen - 1] = 0;
|
|
211
|
624 #endif /* APOLLO */
|
|
|
625 #ifdef DOS_NT
|
|
|
626 CORRECT_DIR_SEPS (dst);
|
|
|
627 #endif /* DOS_NT */
|
|
0
|
628 return 1;
|
|
|
629 }
|
|
|
630
|
|
20
|
631 DEFUN ("directory-file-name", Fdirectory_file_name, 1, 1, 0, /*
|
|
0
|
632 Return the file name of the directory named DIR.
|
|
|
633 This is the name of the file that holds the data for the directory DIR.
|
|
|
634 This operation exists because a directory is also a file, but its name as
|
|
|
635 a directory is different from its name as a file.
|
|
|
636 In Unix-syntax, this function just removes the final slash.
|
|
20
|
637 */
|
|
|
638 (directory))
|
|
0
|
639 {
|
|
120
|
640 /* This function can GC. GC checked 1997.04.06. */
|
|
0
|
641 char *buf;
|
|
|
642 Lisp_Object handler;
|
|
|
643
|
|
|
644 CHECK_STRING (directory);
|
|
|
645
|
|
|
646 #if 0 /* #### WTF? */
|
|
|
647 if (NILP (directory))
|
|
|
648 return Qnil;
|
|
|
649 #endif
|
|
|
650
|
|
|
651 /* If the file name has special constructs in it,
|
|
|
652 call the corresponding file handler. */
|
|
|
653 handler = Ffind_file_name_handler (directory, Qdirectory_file_name);
|
|
|
654 if (!NILP (handler))
|
|
173
|
655 return call2_check_string (handler, Qdirectory_file_name, directory);
|
|
16
|
656 buf = (char *) alloca (XSTRING_LENGTH (directory) + 20);
|
|
|
657 directory_file_name ((char *) XSTRING_DATA (directory), buf);
|
|
0
|
658 return build_string (buf);
|
|
|
659 }
|
|
|
660
|
|
20
|
661 DEFUN ("make-temp-name", Fmake_temp_name, 1, 1, 0, /*
|
|
0
|
662 Generate temporary file name (string) starting with PREFIX (a string).
|
|
|
663 The Emacs process number forms part of the result,
|
|
|
664 so there is no danger of generating a name being used by another process.
|
|
20
|
665 */
|
|
|
666 (prefix))
|
|
0
|
667 {
|
|
|
668 CONST char suffix[] = "XXXXXX";
|
|
|
669 Bufbyte *data;
|
|
|
670 Bytecount len;
|
|
|
671 Lisp_Object val;
|
|
|
672
|
|
|
673 CHECK_STRING (prefix);
|
|
16
|
674 len = XSTRING_LENGTH (prefix);
|
|
0
|
675 val = make_uninit_string (len + countof (suffix) - 1);
|
|
16
|
676 data = XSTRING_DATA (val);
|
|
|
677 memcpy (data, XSTRING_DATA (prefix), len);
|
|
0
|
678 memcpy (data + len, suffix, countof (suffix));
|
|
|
679 /* !!#### does mktemp() Mule-encapsulate? */
|
|
|
680 mktemp ((char *) data);
|
|
|
681
|
|
211
|
682 #ifdef DOS_NT
|
|
|
683 CORRECT_DIR_SEPS (XSTRING_DATA (val));
|
|
|
684 #endif /* DOS_NT */
|
|
0
|
685 return val;
|
|
|
686 }
|
|
|
687
|
|
20
|
688 DEFUN ("expand-file-name", Fexpand_file_name, 1, 2, 0, /*
|
|
0
|
689 Convert FILENAME to absolute, and canonicalize it.
|
|
|
690 Second arg DEFAULT is directory to start with if FILENAME is relative
|
|
|
691 (does not start with slash); if DEFAULT is nil or missing,
|
|
|
692 the current buffer's value of default-directory is used.
|
|
151
|
693 Path components that are `.' are removed, and
|
|
0
|
694 path components followed by `..' are removed, along with the `..' itself;
|
|
|
695 note that these simplifications are done without checking the resulting
|
|
|
696 paths in the file system.
|
|
|
697 An initial `~/' expands to your home directory.
|
|
|
698 An initial `~USER/' expands to USER's home directory.
|
|
|
699 See also the function `substitute-in-file-name'.
|
|
20
|
700 */
|
|
173
|
701 (name, default_))
|
|
0
|
702 {
|
|
120
|
703 /* This function can GC. GC checked 1997.04.06. */
|
|
0
|
704 Bufbyte *nm;
|
|
151
|
705
|
|
0
|
706 Bufbyte *newdir, *p, *o;
|
|
|
707 int tlen;
|
|
|
708 Bufbyte *target;
|
|
|
709 struct passwd *pw;
|
|
|
710 #ifdef DOS_NT
|
|
211
|
711 int drive = 0;
|
|
|
712 int collapse_newdir = 1;
|
|
|
713 int length;
|
|
0
|
714 #endif /* DOS_NT */
|
|
|
715 Lisp_Object handler;
|
|
151
|
716
|
|
0
|
717 CHECK_STRING (name);
|
|
|
718
|
|
|
719 /* If the file name has special constructs in it,
|
|
|
720 call the corresponding file handler. */
|
|
|
721 handler = Ffind_file_name_handler (name, Qexpand_file_name);
|
|
|
722 if (!NILP (handler))
|
|
173
|
723 return call3_check_string (handler, Qexpand_file_name, name, default_);
|
|
|
724
|
|
|
725 /* Use the buffer's default-directory if DEFAULT_ is omitted. */
|
|
|
726 if (NILP (default_))
|
|
|
727 default_ = current_buffer->directory;
|
|
|
728 if (NILP (default_)) /* this should be a meaningful error */
|
|
0
|
729 {
|
|
|
730 /* #### If we had a minibuffer-only frame up then current_buffer
|
|
|
731 is likely to not have a directory setting. We should
|
|
|
732 probably redo things to make sure that current_buffer stays
|
|
|
733 set to something sensible. */
|
|
|
734 if (!preparing_for_armageddon)
|
|
|
735 signal_simple_error ("default-directory is not set",
|
|
|
736 make_buffer (current_buffer));
|
|
|
737 }
|
|
|
738 else
|
|
173
|
739 CHECK_STRING (default_);
|
|
|
740
|
|
|
741 if (!NILP (default_))
|
|
0
|
742 {
|
|
114
|
743 struct gcpro gcpro1;
|
|
|
744
|
|
173
|
745 GCPRO1 (default_); /* might be current_buffer->directory */
|
|
|
746 handler = Ffind_file_name_handler (default_, Qexpand_file_name);
|
|
114
|
747 UNGCPRO;
|
|
0
|
748 if (!NILP (handler))
|
|
173
|
749 return call3 (handler, Qexpand_file_name, name, default_);
|
|
0
|
750 }
|
|
|
751
|
|
173
|
752 /* Make sure DEFAULT_ is properly expanded.
|
|
0
|
753 It would be better to do this down below where we actually use
|
|
173
|
754 default_. Unfortunately, calling Fexpand_file_name recursively
|
|
0
|
755 could invoke GC, and the strings might be relocated. This would
|
|
|
756 be annoying because we have pointers into strings lying around
|
|
|
757 that would need adjusting, and people would add new pointers to
|
|
|
758 the code and forget to adjust them, resulting in intermittent bugs.
|
|
|
759 Putting this call here avoids all that crud.
|
|
|
760
|
|
|
761 The EQ test avoids infinite recursion. */
|
|
173
|
762 if (! NILP(default_) && !EQ (default_, name)
|
|
211
|
763 /* Save time in some common cases - as long as default_directory
|
|
|
764 is not relative, it can be canonicalized with name below (if it
|
|
|
765 is needed at all) without requiring it to be expanded now. */
|
|
173
|
766 && ! (XSTRING_LENGTH (default_) >= 3
|
|
211
|
767 #ifdef DOS_NT
|
|
|
768 /* Detect MSDOS file names with drive specifiers. */
|
|
|
769 && (IS_DRIVE (XSTRING_BYTE (default_, 0))
|
|
|
770 && (IS_DEVICE_SEP (XSTRING_BYTE (default_, 1))
|
|
225
|
771 && IS_DIRECTORY_SEP (XSTRING_BYTE (default_, 2))))
|
|
211
|
772 #ifdef WINDOWSNT
|
|
225
|
773 /* Detect Windows file names in UNC format. */
|
|
|
774 && ! (XSTRING_LENGTH (default_) >= 2
|
|
|
775 && IS_DIRECTORY_SEP (XSTRING_BYTE (default_, 0))
|
|
|
776 && IS_DIRECTORY_SEP (XSTRING_BYTE (default_, 1)))
|
|
211
|
777 #endif
|
|
|
778 #else /* not DOS_NT */
|
|
|
779 /* Detect Unix absolute file names (/... alone is not absolute on
|
|
|
780 DOS or Windows). */
|
|
173
|
781 && (IS_DIRECTORY_SEP (XSTRING_BYTE (default_, 0))
|
|
225
|
782 || IS_DEVICE_SEP (XSTRING_BYTE (default_, 1)))
|
|
211
|
783 #endif /* not DOS_NT */
|
|
225
|
784 ))
|
|
0
|
785 {
|
|
|
786 struct gcpro gcpro1;
|
|
|
787
|
|
173
|
788 GCPRO1 (default_); /* may be current_buffer->directory */
|
|
|
789 default_ = Fexpand_file_name (default_, Qnil);
|
|
0
|
790 UNGCPRO;
|
|
|
791 }
|
|
|
792
|
|
|
793 #ifdef FILE_SYSTEM_CASE
|
|
|
794 name = FILE_SYSTEM_CASE (name);
|
|
|
795 #endif
|
|
|
796
|
|
114
|
797 /* #### dmoore - this is ugly, clean this up. Looks like nm
|
|
|
798 pointing into name should be safe during all of this, though. */
|
|
16
|
799 nm = XSTRING_DATA (name);
|
|
151
|
800
|
|
0
|
801 #ifdef DOS_NT
|
|
211
|
802 /* We will force directory separators to be either all \ or /, so make
|
|
|
803 a local copy to modify, even if there ends up being no change. */
|
|
|
804 nm = strcpy (alloca (strlen (nm) + 1), nm);
|
|
|
805
|
|
|
806 /* Find and remove drive specifier if present; this makes nm absolute
|
|
|
807 even if the rest of the name appears to be relative. */
|
|
0
|
808 {
|
|
|
809 Bufbyte *colon = strrchr (nm, ':');
|
|
|
810 if (colon)
|
|
211
|
811 /* Only recognize colon as part of drive specifier if there is a
|
|
|
812 single alphabetic character preceeding the colon (and if the
|
|
|
813 character before the drive letter, if present, is a directory
|
|
|
814 separator); this is to support the remote system syntax used by
|
|
|
815 ange-ftp, and the "po:username" syntax for POP mailboxes. */
|
|
|
816 look_again:
|
|
0
|
817 if (nm == colon)
|
|
|
818 nm++;
|
|
211
|
819 else if (IS_DRIVE (colon[-1])
|
|
|
820 && (colon == nm + 1 || IS_DIRECTORY_SEP (colon[-2])))
|
|
0
|
821 {
|
|
|
822 drive = colon[-1];
|
|
|
823 nm = colon + 1;
|
|
211
|
824 }
|
|
|
825 else
|
|
|
826 {
|
|
|
827 while (--colon >= nm)
|
|
|
828 if (colon[0] == ':')
|
|
|
829 goto look_again;
|
|
151
|
830 }
|
|
0
|
831 }
|
|
211
|
832
|
|
|
833 #ifdef WINDOWSNT
|
|
|
834 /* If we see "c://somedir", we want to strip the first slash after the
|
|
|
835 colon when stripping the drive letter. Otherwise, this expands to
|
|
|
836 "//somedir". */
|
|
|
837 if (drive && IS_DIRECTORY_SEP (nm[0]) && IS_DIRECTORY_SEP (nm[1]))
|
|
|
838 nm++;
|
|
|
839 #endif /* WINDOWSNT */
|
|
0
|
840 #endif /* DOS_NT */
|
|
|
841
|
|
189
|
842 /* We *don't* want to handle // and /~ that way. */
|
|
|
843 #if 0
|
|
0
|
844 /* Handle // and /~ in middle of file name
|
|
|
845 by discarding everything through the first / of that sequence. */
|
|
|
846 p = nm;
|
|
|
847 while (*p)
|
|
|
848 {
|
|
|
849 /* Since we know the path is absolute, we can assume that each
|
|
|
850 element starts with a "/". */
|
|
|
851
|
|
|
852 /* "//" anywhere isn't necessarily hairy; we just start afresh
|
|
|
853 with the second slash. */
|
|
|
854 if (IS_DIRECTORY_SEP (p[0]) && IS_DIRECTORY_SEP (p[1])
|
|
|
855 #if defined (APOLLO) || defined (WINDOWSNT)
|
|
151
|
856 /* // at start of filename is meaningful on Apollo
|
|
0
|
857 and WindowsNT systems */
|
|
|
858 && nm != p
|
|
|
859 #endif /* APOLLO || WINDOWSNT */
|
|
|
860 )
|
|
|
861 nm = p + 1;
|
|
|
862
|
|
|
863 /* "~" is hairy as the start of any path element. */
|
|
|
864 if (IS_DIRECTORY_SEP (p[0]) && p[1] == '~')
|
|
|
865 nm = p + 1;
|
|
|
866
|
|
|
867 p++;
|
|
|
868 }
|
|
211
|
869
|
|
|
870 #endif /* 0 */
|
|
|
871
|
|
|
872 #ifdef WINDOWSNT
|
|
|
873 /* Discard any previous drive specifier if nm is now in UNC format. */
|
|
|
874 if (IS_DIRECTORY_SEP (nm[0]) && IS_DIRECTORY_SEP (nm[1]))
|
|
|
875 {
|
|
|
876 drive = 0;
|
|
|
877 }
|
|
|
878 #endif /* WINDOWSNT */
|
|
|
879
|
|
|
880 /* If nm is absolute, look for /./ or /../ sequences; if none are
|
|
|
881 found, we can probably return right away. We will avoid allocating
|
|
|
882 a new string if name is already fully expanded. */
|
|
|
883 if (IS_DIRECTORY_SEP (nm[0])
|
|
|
884 #ifdef WINDOWSNT
|
|
|
885 && (drive || IS_DIRECTORY_SEP (nm[1]))
|
|
189
|
886 #endif
|
|
211
|
887 )
|
|
0
|
888 {
|
|
|
889 /* If it turns out that the filename we want to return is just a
|
|
|
890 suffix of FILENAME, we don't need to go through and edit
|
|
|
891 things; we just need to construct a new string using data
|
|
|
892 starting at the middle of FILENAME. If we set lose to a
|
|
|
893 non-zero value, that means we've discovered that we can't do
|
|
|
894 that cool trick. */
|
|
|
895 int lose = 0;
|
|
|
896
|
|
|
897 p = nm;
|
|
|
898 while (*p)
|
|
|
899 {
|
|
|
900 /* Since we know the path is absolute, we can assume that each
|
|
|
901 element starts with a "/". */
|
|
|
902
|
|
|
903 /* "." and ".." are hairy. */
|
|
|
904 if (IS_DIRECTORY_SEP (p[0])
|
|
|
905 && p[1] == '.'
|
|
|
906 && (IS_DIRECTORY_SEP (p[2])
|
|
|
907 || p[2] == 0
|
|
|
908 || (p[2] == '.' && (IS_DIRECTORY_SEP (p[3])
|
|
|
909 || p[3] == 0))))
|
|
|
910 lose = 1;
|
|
|
911 p++;
|
|
|
912 }
|
|
|
913 if (!lose)
|
|
|
914 {
|
|
211
|
915 #ifdef DOS_NT
|
|
|
916 /* Make sure directories are all separated with / or \ as
|
|
|
917 desired, but avoid allocation of a new string when not
|
|
|
918 required. */
|
|
|
919 CORRECT_DIR_SEPS (nm);
|
|
|
920 #ifdef WINDOWSNT
|
|
|
921 if (IS_DIRECTORY_SEP (nm[1]))
|
|
|
922 {
|
|
|
923 if (strcmp (nm, XSTRING_DATA (name)) != 0)
|
|
|
924 name = build_string (nm);
|
|
|
925 }
|
|
|
926 else
|
|
|
927 #endif
|
|
|
928 /* drive must be set, so this is okay */
|
|
|
929 if (strcmp (nm - 2, XSTRING_DATA (name)) != 0)
|
|
|
930 {
|
|
|
931 name = make_string (nm - 2, p - nm + 2);
|
|
|
932 XSTRING_DATA (name)[0] = DRIVE_LETTER (drive);
|
|
|
933 XSTRING_DATA (name)[1] = ':';
|
|
|
934 }
|
|
|
935 return name;
|
|
|
936 #else /* not DOS_NT */
|
|
|
937 /* Unix */
|
|
16
|
938 if (nm == XSTRING_DATA (name))
|
|
0
|
939 return name;
|
|
|
940 return build_string ((char *) nm);
|
|
211
|
941 #endif /* DOS_NT */
|
|
0
|
942 }
|
|
|
943 }
|
|
|
944
|
|
211
|
945 /* At this point, nm might or might not be an absolute file name. We
|
|
|
946 need to expand ~ or ~user if present, otherwise prefix nm with
|
|
|
947 default_directory if nm is not absolute, and finally collapse /./
|
|
|
948 and /foo/../ sequences.
|
|
|
949
|
|
|
950 We set newdir to be the appropriate prefix if one is needed:
|
|
|
951 - the relevant user directory if nm starts with ~ or ~user
|
|
|
952 - the specified drive's working dir (DOS/NT only) if nm does not
|
|
|
953 start with /
|
|
|
954 - the value of default_directory.
|
|
|
955
|
|
|
956 Note that these prefixes are not guaranteed to be absolute (except
|
|
|
957 for the working dir of a drive). Therefore, to ensure we always
|
|
|
958 return an absolute name, if the final prefix is not absolute we
|
|
|
959 append it to the current working directory. */
|
|
0
|
960
|
|
|
961 newdir = 0;
|
|
|
962
|
|
|
963 if (nm[0] == '~') /* prefix ~ */
|
|
|
964 {
|
|
|
965 if (IS_DIRECTORY_SEP (nm[1])
|
|
|
966 || nm[1] == 0) /* ~ by itself */
|
|
|
967 {
|
|
|
968 if (!(newdir = (Bufbyte *) egetenv ("HOME")))
|
|
|
969 newdir = (Bufbyte *) "";
|
|
211
|
970 /* Syncing with FSF 19.34.6 note: this is not in FSF. Since it is dated 1995,
|
|
|
971 I doubt it is coming from XEmacs. I (#if 0) it but let the code
|
|
|
972 stay there just in case. --marcpa */
|
|
|
973 #if 0
|
|
0
|
974 #ifdef DOS_NT
|
|
|
975 /* Problem when expanding "~\" if HOME is not on current drive.
|
|
|
976 Ulrich Leodolter, Wed Jan 11 10:20:35 1995 */
|
|
|
977 if (newdir[1] == ':')
|
|
|
978 drive = newdir[0];
|
|
|
979 dostounix_filename (newdir);
|
|
183
|
980 #endif /* DOS_NT */
|
|
211
|
981 #endif /* 0 */
|
|
0
|
982 nm++;
|
|
211
|
983 #ifdef DOS_NT
|
|
|
984 collapse_newdir = 0;
|
|
|
985 #endif /* DOS_NT */
|
|
0
|
986 }
|
|
|
987 else /* ~user/filename */
|
|
|
988 {
|
|
209
|
989 for (p = nm; *p && (!IS_DIRECTORY_SEP (*p)); p++);
|
|
0
|
990 o = (Bufbyte *) alloca (p - nm + 1);
|
|
|
991 memcpy (o, (char *) nm, p - nm);
|
|
|
992 o [p - nm] = 0;
|
|
|
993
|
|
211
|
994 /* Syncing with FSF 19.34.6 note: FSF uses getpwnam even on NT, which does
|
|
|
995 not work. The following works only if ~USER names the user who runs
|
|
|
996 this instance of XEmacs. While NT is single-user (for the moment) you
|
|
|
997 still can have multiple user profiles users defined, each with its
|
|
|
998 HOME. Therefore, the following should be reworked to handle this case.
|
|
|
999 --marcpa */
|
|
0
|
1000 #ifdef WINDOWSNT
|
|
195
|
1001 /*
|
|
|
1002 ** Now if the file given is "~foo/file" and HOME="c:/", then we
|
|
|
1003 ** want the file to be named "c:/file" ("~foo" becomes "c:/").
|
|
|
1004 ** The variable o has "~foo", so we can use the length of
|
|
|
1005 ** that string to offset nm. August Hill, 31 Aug 1998.
|
|
|
1006 */
|
|
211
|
1007 newdir = (Bufbyte *) egetenv ("HOME");
|
|
0
|
1008 dostounix_filename (newdir);
|
|
195
|
1009 nm += strlen(o) + 1;
|
|
0
|
1010 #else /* not WINDOWSNT */
|
|
|
1011 /* Jamie reports that getpwnam() can get wedged by SIGIO/SIGALARM
|
|
|
1012 occurring in it. (It can call select()). */
|
|
|
1013 slow_down_interrupts ();
|
|
|
1014 pw = (struct passwd *) getpwnam ((char *) o + 1);
|
|
|
1015 speed_up_interrupts ();
|
|
|
1016 if (pw)
|
|
|
1017 {
|
|
|
1018 newdir = (Bufbyte *) pw -> pw_dir;
|
|
|
1019 nm = p;
|
|
|
1020 }
|
|
|
1021 #endif /* not WINDOWSNT */
|
|
|
1022
|
|
|
1023 /* If we don't find a user of that name, leave the name
|
|
|
1024 unchanged; don't move nm forward to p. */
|
|
|
1025 }
|
|
|
1026 }
|
|
|
1027
|
|
|
1028 #ifdef DOS_NT
|
|
211
|
1029 /* On DOS and Windows, nm is absolute if a drive name was specified;
|
|
|
1030 use the drive's current directory as the prefix if needed. */
|
|
|
1031 if (!newdir && drive)
|
|
|
1032 {
|
|
|
1033 /* Get default directory if needed to make nm absolute. */
|
|
|
1034 if (!IS_DIRECTORY_SEP (nm[0]))
|
|
|
1035 {
|
|
|
1036 newdir = alloca (MAXPATHLEN + 1);
|
|
|
1037 if (!getdefdir (toupper (drive) - 'A' + 1, newdir))
|
|
|
1038 newdir = NULL;
|
|
|
1039 }
|
|
|
1040 if (!newdir)
|
|
|
1041 {
|
|
|
1042 /* Either nm starts with /, or drive isn't mounted. */
|
|
|
1043 newdir = alloca (4);
|
|
|
1044 newdir[0] = DRIVE_LETTER (drive);
|
|
|
1045 newdir[1] = ':';
|
|
|
1046 newdir[2] = '/';
|
|
|
1047 newdir[3] = 0;
|
|
|
1048 }
|
|
|
1049 }
|
|
0
|
1050 #endif /* DOS_NT */
|
|
211
|
1051
|
|
|
1052 /* Finally, if no prefix has been specified and nm is not absolute,
|
|
|
1053 then it must be expanded relative to default_directory. */
|
|
|
1054 if (1
|
|
|
1055 #ifndef DOS_NT
|
|
|
1056 && !IS_ANY_SEP (nm[0])
|
|
|
1057 #endif /* not DOS_NT */
|
|
|
1058 #ifdef WINDOWSNT
|
|
|
1059 && !(IS_DIRECTORY_SEP (nm[0]) && IS_DIRECTORY_SEP (nm[1]))
|
|
|
1060 #endif
|
|
0
|
1061 && !newdir
|
|
173
|
1062 && STRINGP (default_))
|
|
0
|
1063 {
|
|
173
|
1064 newdir = XSTRING_DATA (default_);
|
|
0
|
1065 }
|
|
|
1066
|
|
|
1067 #ifdef DOS_NT
|
|
211
|
1068 if (newdir)
|
|
|
1069 {
|
|
|
1070 /* First ensure newdir is an absolute name. */
|
|
|
1071 if (
|
|
|
1072 /* Detect MSDOS file names with drive specifiers. */
|
|
|
1073 ! (IS_DRIVE (newdir[0])
|
|
|
1074 && IS_DEVICE_SEP (newdir[1]) && IS_DIRECTORY_SEP (newdir[2]))
|
|
|
1075 #ifdef WINDOWSNT
|
|
|
1076 /* Detect Windows file names in UNC format. */
|
|
|
1077 && ! (IS_DIRECTORY_SEP (newdir[0]) && IS_DIRECTORY_SEP (newdir[1]))
|
|
|
1078 #endif
|
|
|
1079 )
|
|
|
1080 {
|
|
|
1081 /* Effectively, let newdir be (expand-file-name newdir cwd).
|
|
|
1082 Because of the admonition against calling expand-file-name
|
|
|
1083 when we have pointers into lisp strings, we accomplish this
|
|
|
1084 indirectly by prepending newdir to nm if necessary, and using
|
|
|
1085 cwd (or the wd of newdir's drive) as the new newdir. */
|
|
|
1086
|
|
|
1087 if (IS_DRIVE (newdir[0]) && newdir[1] == ':')
|
|
|
1088 {
|
|
|
1089 drive = newdir[0];
|
|
|
1090 newdir += 2;
|
|
|
1091 }
|
|
|
1092 if (!IS_DIRECTORY_SEP (nm[0]))
|
|
|
1093 {
|
|
|
1094 char * tmp = alloca (strlen (newdir) + strlen (nm) + 2);
|
|
|
1095 file_name_as_directory (tmp, newdir);
|
|
|
1096 strcat (tmp, nm);
|
|
|
1097 nm = tmp;
|
|
|
1098 }
|
|
|
1099 newdir = alloca (MAXPATHLEN + 1);
|
|
|
1100 if (drive)
|
|
|
1101 {
|
|
|
1102 if (!getdefdir (toupper (drive) - 'A' + 1, newdir))
|
|
|
1103 newdir = "/";
|
|
|
1104 }
|
|
|
1105 else
|
|
|
1106 getwd (newdir);
|
|
|
1107 }
|
|
|
1108
|
|
|
1109 /* Strip off drive name from prefix, if present. */
|
|
|
1110 if (IS_DRIVE (newdir[0]) && newdir[1] == ':')
|
|
|
1111 {
|
|
|
1112 drive = newdir[0];
|
|
|
1113 newdir += 2;
|
|
|
1114 }
|
|
|
1115
|
|
|
1116 /* Keep only a prefix from newdir if nm starts with slash
|
|
225
|
1117 (/ /server/share for UNC, nothing otherwise). */
|
|
211
|
1118 if (IS_DIRECTORY_SEP (nm[0]) && collapse_newdir)
|
|
|
1119 {
|
|
|
1120 #ifdef WINDOWSNT
|
|
|
1121 if (IS_DIRECTORY_SEP (newdir[0]) && IS_DIRECTORY_SEP (newdir[1]))
|
|
|
1122 {
|
|
|
1123 newdir = strcpy (alloca (strlen (newdir) + 1), newdir);
|
|
|
1124 p = newdir + 2;
|
|
|
1125 while (*p && !IS_DIRECTORY_SEP (*p)) p++;
|
|
|
1126 p++;
|
|
|
1127 while (*p && !IS_DIRECTORY_SEP (*p)) p++;
|
|
|
1128 *p = 0;
|
|
|
1129 }
|
|
|
1130 else
|
|
|
1131 #endif
|
|
|
1132 newdir = "";
|
|
|
1133 }
|
|
|
1134 }
|
|
0
|
1135 #endif /* DOS_NT */
|
|
|
1136 if (newdir != 0)
|
|
|
1137 {
|
|
211
|
1138 /* Get rid of any slash at the end of newdir, unless newdir is
|
|
|
1139 just // (an incomplete UNC name). */
|
|
0
|
1140 int length = strlen ((char *) newdir);
|
|
|
1141 /* Adding `length > 1 &&' makes ~ expand into / when homedir
|
|
|
1142 is the root dir. People disagree about whether that is right.
|
|
|
1143 Anyway, we can't take the risk of this change now. */
|
|
211
|
1144 /* Syncing with FSF 19.34.6 note: FSF does the above. */
|
|
|
1145 if (IS_DIRECTORY_SEP (newdir[length - 1])
|
|
|
1146 #ifdef WINDOWSNT
|
|
|
1147 && !(length == 2 && IS_DIRECTORY_SEP (newdir[0]))
|
|
0
|
1148 #endif
|
|
211
|
1149 )
|
|
0
|
1150 {
|
|
|
1151 Bufbyte *temp = (Bufbyte *) alloca (length);
|
|
|
1152 memcpy (temp, newdir, length - 1);
|
|
|
1153 temp[length - 1] = 0;
|
|
|
1154 newdir = temp;
|
|
|
1155 }
|
|
|
1156 tlen = length + 1;
|
|
|
1157 }
|
|
|
1158 else
|
|
|
1159 tlen = 0;
|
|
|
1160
|
|
|
1161 /* Now concatenate the directory and name to new space in the stack frame */
|
|
|
1162 tlen += strlen ((char *) nm) + 1;
|
|
|
1163 #ifdef DOS_NT
|
|
151
|
1164 /* Add reserved space for drive name. (The Microsoft x86 compiler
|
|
0
|
1165 produces incorrect code if the following two lines are combined.) */
|
|
|
1166 target = (Bufbyte *) alloca (tlen + 2);
|
|
|
1167 target += 2;
|
|
|
1168 #else /* not DOS_NT */
|
|
|
1169 target = (Bufbyte *) alloca (tlen);
|
|
211
|
1170 #endif /* DOS_NT */
|
|
0
|
1171 *target = 0;
|
|
|
1172
|
|
|
1173 if (newdir)
|
|
|
1174 {
|
|
|
1175 if (nm[0] == 0 || IS_DIRECTORY_SEP (nm[0]))
|
|
|
1176 strcpy ((char *) target, (char *) newdir);
|
|
|
1177 else
|
|
|
1178 file_name_as_directory ((char *) target, (char *) newdir);
|
|
|
1179 }
|
|
|
1180
|
|
|
1181 strcat ((char *) target, (char *) nm);
|
|
|
1182
|
|
|
1183 /* Now canonicalize by removing /. and /foo/.. if they appear. */
|
|
|
1184
|
|
|
1185 p = target;
|
|
|
1186 o = target;
|
|
|
1187
|
|
|
1188 while (*p)
|
|
|
1189 {
|
|
|
1190 if (!IS_DIRECTORY_SEP (*p))
|
|
|
1191 {
|
|
|
1192 *o++ = *p++;
|
|
|
1193 }
|
|
|
1194 else if (IS_DIRECTORY_SEP (p[0]) && IS_DIRECTORY_SEP (p[1])
|
|
|
1195 #if defined (APOLLO) || defined (WINDOWSNT)
|
|
151
|
1196 /* // at start of filename is meaningful in Apollo
|
|
0
|
1197 and WindowsNT systems */
|
|
|
1198 && o != target
|
|
211
|
1199 #endif /* APOLLO || WINDOWSNT */
|
|
0
|
1200 )
|
|
|
1201 {
|
|
|
1202 o = target;
|
|
|
1203 p++;
|
|
|
1204 }
|
|
|
1205 else if (IS_DIRECTORY_SEP (p[0])
|
|
|
1206 && p[1] == '.'
|
|
|
1207 && (IS_DIRECTORY_SEP (p[2])
|
|
|
1208 || p[2] == 0))
|
|
|
1209 {
|
|
|
1210 /* If "/." is the entire filename, keep the "/". Otherwise,
|
|
|
1211 just delete the whole "/.". */
|
|
|
1212 if (o == target && p[2] == '\0')
|
|
|
1213 *o++ = *p;
|
|
|
1214 p += 2;
|
|
|
1215 }
|
|
|
1216 else if (IS_DIRECTORY_SEP (p[0]) && p[1] == '.' && p[2] == '.'
|
|
|
1217 /* `/../' is the "superroot" on certain file systems. */
|
|
|
1218 && o != target
|
|
|
1219 && (IS_DIRECTORY_SEP (p[3]) || p[3] == 0))
|
|
|
1220 {
|
|
|
1221 while (o != target && (--o) && !IS_DIRECTORY_SEP (*o))
|
|
|
1222 ;
|
|
211
|
1223 if (o == target && IS_ANY_SEP (*o)
|
|
|
1224 #ifdef DOS_NT
|
|
|
1225 && p[3] == 0
|
|
|
1226 #endif
|
|
|
1227 )
|
|
0
|
1228 ++o;
|
|
|
1229 p += 3;
|
|
|
1230 }
|
|
|
1231 else
|
|
|
1232 {
|
|
|
1233 *o++ = *p++;
|
|
|
1234 }
|
|
|
1235 }
|
|
|
1236
|
|
|
1237 #ifdef DOS_NT
|
|
211
|
1238 /* At last, set drive name. */
|
|
0
|
1239 #ifdef WINDOWSNT
|
|
211
|
1240 /* Except for network file name. */
|
|
|
1241 if (!(IS_DIRECTORY_SEP (target[0]) && IS_DIRECTORY_SEP (target[1])))
|
|
0
|
1242 #endif /* WINDOWSNT */
|
|
|
1243 {
|
|
211
|
1244 if (!drive) abort ();
|
|
0
|
1245 target -= 2;
|
|
211
|
1246 target[0] = DRIVE_LETTER (drive);
|
|
0
|
1247 target[1] = ':';
|
|
|
1248 }
|
|
211
|
1249 CORRECT_DIR_SEPS (target);
|
|
0
|
1250 #endif /* DOS_NT */
|
|
|
1251
|
|
|
1252 return make_string (target, o - target);
|
|
|
1253 }
|
|
|
1254
|
|
|
1255 #if 0 /* FSFmacs */
|
|
227
|
1256 /* another older version of expand-file-name; */
|
|
0
|
1257 #endif
|
|
|
1258
|
|
20
|
1259 DEFUN ("file-truename", Ffile_truename, 1, 2, 0, /*
|
|
0
|
1260 Return the canonical name of the given FILE.
|
|
|
1261 Second arg DEFAULT is directory to start with if FILE is relative
|
|
|
1262 (does not start with slash); if DEFAULT is nil or missing,
|
|
|
1263 the current buffer's value of default-directory is used.
|
|
|
1264 No component of the resulting pathname will be a symbolic link, as
|
|
|
1265 in the realpath() function.
|
|
20
|
1266 */
|
|
173
|
1267 (filename, default_))
|
|
0
|
1268 {
|
|
120
|
1269 /* This function can GC. GC checked 1997.04.06. */
|
|
0
|
1270 Lisp_Object expanded_name;
|
|
|
1271 Lisp_Object handler;
|
|
120
|
1272 struct gcpro gcpro1;
|
|
0
|
1273
|
|
|
1274 CHECK_STRING (filename);
|
|
|
1275
|
|
173
|
1276 expanded_name = Fexpand_file_name (filename, default_);
|
|
0
|
1277
|
|
|
1278 if (!STRINGP (expanded_name))
|
|
|
1279 return Qnil;
|
|
|
1280
|
|
|
1281 GCPRO1 (expanded_name);
|
|
|
1282 handler = Ffind_file_name_handler (expanded_name, Qfile_truename);
|
|
|
1283 UNGCPRO;
|
|
|
1284
|
|
|
1285 if (!NILP (handler))
|
|
173
|
1286 return call2_check_string (handler, Qfile_truename, expanded_name);
|
|
0
|
1287
|
|
|
1288 {
|
|
|
1289 char resolved_path[MAXPATHLEN];
|
|
|
1290 char path[MAXPATHLEN];
|
|
|
1291 char *p = path;
|
|
16
|
1292 int elen = XSTRING_LENGTH (expanded_name);
|
|
151
|
1293
|
|
0
|
1294 if (elen >= countof (path))
|
|
|
1295 goto toolong;
|
|
151
|
1296
|
|
16
|
1297 memcpy (path, XSTRING_DATA (expanded_name), elen + 1);
|
|
0
|
1298 /* memset (resolved_path, 0, sizeof (resolved_path)); */
|
|
|
1299
|
|
|
1300 /* Try doing it all at once. */
|
|
|
1301 /* !!#### Does realpath() Mule-encapsulate? */
|
|
|
1302 if (!realpath (path, resolved_path))
|
|
|
1303 {
|
|
|
1304 /* Didn't resolve it -- have to do it one component at a time. */
|
|
|
1305 /* "realpath" is a typically useless, stupid un*x piece of crap.
|
|
|
1306 It claims to return a useful value in the "error" case, but since
|
|
|
1307 there is no indication provided of how far along the pathname
|
|
|
1308 the function went before erring, there is no way to use the
|
|
|
1309 partial result returned. What a piece of junk. */
|
|
|
1310 for (;;)
|
|
|
1311 {
|
|
|
1312 p = (char *) memchr (p + 1, '/', elen - (p + 1 - path));
|
|
|
1313 if (p)
|
|
|
1314 *p = 0;
|
|
|
1315
|
|
|
1316 /* memset (resolved_path, 0, sizeof (resolved_path)); */
|
|
|
1317 if (realpath (path, resolved_path))
|
|
|
1318 {
|
|
|
1319 if (p)
|
|
|
1320 *p = '/';
|
|
|
1321 else
|
|
|
1322 break;
|
|
|
1323
|
|
|
1324 }
|
|
209
|
1325 else if (errno == ENOENT || errno == EACCES)
|
|
0
|
1326 {
|
|
|
1327 /* Failed on this component. Just tack on the rest of
|
|
|
1328 the string and we are done. */
|
|
|
1329 int rlen = strlen (resolved_path);
|
|
|
1330
|
|
|
1331 /* "On failure, it returns NULL, sets errno to indicate
|
|
|
1332 the error, and places in resolved_path the absolute pathname
|
|
|
1333 of the path component which could not be resolved." */
|
|
|
1334 if (p)
|
|
|
1335 {
|
|
|
1336 int plen = elen - (p - path);
|
|
151
|
1337
|
|
0
|
1338 if (rlen > 1 && resolved_path[rlen - 1] == '/')
|
|
|
1339 rlen = rlen - 1;
|
|
|
1340
|
|
|
1341 if (plen + rlen + 1 > countof (resolved_path))
|
|
|
1342 goto toolong;
|
|
|
1343
|
|
|
1344 resolved_path[rlen] = '/';
|
|
|
1345 memcpy (resolved_path + rlen + 1, p + 1, plen + 1 - 1);
|
|
|
1346 }
|
|
|
1347 break;
|
|
|
1348 }
|
|
|
1349 else
|
|
|
1350 goto lose;
|
|
|
1351 }
|
|
|
1352 }
|
|
|
1353
|
|
|
1354 {
|
|
|
1355 int rlen = strlen (resolved_path);
|
|
82
|
1356 if (elen > 0 && XSTRING_BYTE (expanded_name, elen - 1) == '/'
|
|
0
|
1357 && !(rlen > 0 && resolved_path[rlen - 1] == '/'))
|
|
|
1358 {
|
|
|
1359 if (rlen + 1 > countof (resolved_path))
|
|
|
1360 goto toolong;
|
|
|
1361 resolved_path[rlen] = '/';
|
|
|
1362 resolved_path[rlen + 1] = 0;
|
|
|
1363 rlen = rlen + 1;
|
|
|
1364 }
|
|
209
|
1365 return make_ext_string ((Bufbyte *) resolved_path, rlen, FORMAT_BINARY);
|
|
0
|
1366 }
|
|
|
1367
|
|
|
1368 toolong:
|
|
|
1369 errno = ENAMETOOLONG;
|
|
|
1370 goto lose;
|
|
|
1371 lose:
|
|
|
1372 report_file_error ("Finding truename", list1 (expanded_name));
|
|
|
1373 }
|
|
|
1374 return Qnil; /* suppress compiler warning */
|
|
|
1375 }
|
|
|
1376
|
|
|
1377
|
|
20
|
1378 DEFUN ("substitute-in-file-name", Fsubstitute_in_file_name, 1, 1, 0, /*
|
|
0
|
1379 Substitute environment variables referred to in FILENAME.
|
|
|
1380 `$FOO' where FOO is an environment variable name means to substitute
|
|
|
1381 the value of that variable. The variable name should be terminated
|
|
|
1382 with a character not a letter, digit or underscore; otherwise, enclose
|
|
|
1383 the entire variable name in braces.
|
|
|
1384 If `/~' appears, all of FILENAME through that `/' is discarded.
|
|
|
1385
|
|
20
|
1386 */
|
|
|
1387 (string))
|
|
0
|
1388 {
|
|
120
|
1389 /* This function can GC. GC checked 1997.04.06. */
|
|
0
|
1390 Bufbyte *nm;
|
|
|
1391
|
|
|
1392 Bufbyte *s, *p, *o, *x, *endp;
|
|
|
1393 Bufbyte *target = 0;
|
|
|
1394 int total = 0;
|
|
|
1395 int substituted = 0;
|
|
|
1396 Bufbyte *xnm;
|
|
|
1397 Lisp_Object handler;
|
|
|
1398
|
|
|
1399 CHECK_STRING (string);
|
|
|
1400
|
|
|
1401 /* If the file name has special constructs in it,
|
|
|
1402 call the corresponding file handler. */
|
|
|
1403 handler = Ffind_file_name_handler (string, Qsubstitute_in_file_name);
|
|
|
1404 if (!NILP (handler))
|
|
173
|
1405 return call2_check_string_or_nil (handler, Qsubstitute_in_file_name,
|
|
|
1406 string);
|
|
0
|
1407
|
|
16
|
1408 nm = XSTRING_DATA (string);
|
|
211
|
1409 #ifdef DOS_NT
|
|
|
1410 nm = strcpy (alloca (strlen (nm) + 1), nm);
|
|
|
1411 CORRECT_DIR_SEPS (nm);
|
|
|
1412 substituted = (strcmp (nm, XSTRING_DATA (string)) != 0);
|
|
0
|
1413 #endif
|
|
16
|
1414 endp = nm + XSTRING_LENGTH (string);
|
|
0
|
1415
|
|
|
1416 /* If /~ or // appears, discard everything through first slash. */
|
|
|
1417
|
|
|
1418 for (p = nm; p != endp; p++)
|
|
|
1419 {
|
|
211
|
1420 if ((p[0] == '~'
|
|
|
1421 #if defined (APOLLO) || defined (WINDOWSNT)
|
|
|
1422 /* // at start of file name is meaningful in Apollo and
|
|
|
1423 WindowsNT systems */
|
|
|
1424 || (IS_DIRECTORY_SEP (p[0]) && p - 1 != nm)
|
|
|
1425 #else /* not (APOLLO || WINDOWSNT) */
|
|
|
1426 || IS_DIRECTORY_SEP (p[0])
|
|
|
1427 #endif /* not (APOLLO || WINDOWSNT) */
|
|
0
|
1428 )
|
|
|
1429 && p != nm
|
|
209
|
1430 && (IS_DIRECTORY_SEP (p[-1])))
|
|
0
|
1431 {
|
|
|
1432 nm = p;
|
|
|
1433 substituted = 1;
|
|
|
1434 }
|
|
|
1435 #ifdef DOS_NT
|
|
211
|
1436 /* see comment in expand-file-name about drive specifiers */
|
|
|
1437 else if (IS_DRIVE (p[0]) && p[1] == ':'
|
|
|
1438 && p > nm && IS_DIRECTORY_SEP (p[-1]))
|
|
0
|
1439 {
|
|
|
1440 nm = p;
|
|
|
1441 substituted = 1;
|
|
|
1442 }
|
|
|
1443 #endif /* DOS_NT */
|
|
|
1444 }
|
|
|
1445
|
|
|
1446 /* See if any variables are substituted into the string
|
|
|
1447 and find the total length of their values in `total' */
|
|
|
1448
|
|
|
1449 for (p = nm; p != endp;)
|
|
|
1450 if (*p != '$')
|
|
|
1451 p++;
|
|
|
1452 else
|
|
|
1453 {
|
|
|
1454 p++;
|
|
|
1455 if (p == endp)
|
|
|
1456 goto badsubst;
|
|
|
1457 else if (*p == '$')
|
|
|
1458 {
|
|
|
1459 /* "$$" means a single "$" */
|
|
|
1460 p++;
|
|
|
1461 total -= 1;
|
|
|
1462 substituted = 1;
|
|
|
1463 continue;
|
|
|
1464 }
|
|
|
1465 else if (*p == '{')
|
|
|
1466 {
|
|
|
1467 o = ++p;
|
|
|
1468 while (p != endp && *p != '}') p++;
|
|
|
1469 if (*p != '}') goto missingclose;
|
|
|
1470 s = p;
|
|
|
1471 }
|
|
|
1472 else
|
|
|
1473 {
|
|
|
1474 o = p;
|
|
|
1475 while (p != endp && (isalnum (*p) || *p == '_')) p++;
|
|
|
1476 s = p;
|
|
|
1477 }
|
|
|
1478
|
|
|
1479 /* Copy out the variable name */
|
|
|
1480 target = (Bufbyte *) alloca (s - o + 1);
|
|
|
1481 strncpy ((char *) target, (char *) o, s - o);
|
|
|
1482 target[s - o] = 0;
|
|
|
1483 #ifdef DOS_NT
|
|
|
1484 strupr (target); /* $home == $HOME etc. */
|
|
|
1485 #endif /* DOS_NT */
|
|
|
1486
|
|
|
1487 /* Get variable value */
|
|
|
1488 o = (Bufbyte *) egetenv ((char *) target);
|
|
|
1489 if (!o) goto badvar;
|
|
|
1490 total += strlen ((char *) o);
|
|
|
1491 substituted = 1;
|
|
|
1492 }
|
|
|
1493
|
|
|
1494 if (!substituted)
|
|
|
1495 return string;
|
|
|
1496
|
|
|
1497 /* If substitution required, recopy the string and do it */
|
|
|
1498 /* Make space in stack frame for the new copy */
|
|
16
|
1499 xnm = (Bufbyte *) alloca (XSTRING_LENGTH (string) + total + 1);
|
|
0
|
1500 x = xnm;
|
|
|
1501
|
|
|
1502 /* Copy the rest of the name through, replacing $ constructs with values */
|
|
|
1503 for (p = nm; *p;)
|
|
|
1504 if (*p != '$')
|
|
|
1505 *x++ = *p++;
|
|
|
1506 else
|
|
|
1507 {
|
|
|
1508 p++;
|
|
|
1509 if (p == endp)
|
|
|
1510 goto badsubst;
|
|
|
1511 else if (*p == '$')
|
|
|
1512 {
|
|
|
1513 *x++ = *p++;
|
|
|
1514 continue;
|
|
|
1515 }
|
|
|
1516 else if (*p == '{')
|
|
|
1517 {
|
|
|
1518 o = ++p;
|
|
|
1519 while (p != endp && *p != '}') p++;
|
|
|
1520 if (*p != '}') goto missingclose;
|
|
|
1521 s = p++;
|
|
|
1522 }
|
|
|
1523 else
|
|
|
1524 {
|
|
|
1525 o = p;
|
|
|
1526 while (p != endp && (isalnum (*p) || *p == '_')) p++;
|
|
|
1527 s = p;
|
|
|
1528 }
|
|
|
1529
|
|
|
1530 /* Copy out the variable name */
|
|
|
1531 target = (Bufbyte *) alloca (s - o + 1);
|
|
|
1532 strncpy ((char *) target, (char *) o, s - o);
|
|
|
1533 target[s - o] = 0;
|
|
|
1534 #ifdef DOS_NT
|
|
|
1535 strupr (target); /* $home == $HOME etc. */
|
|
|
1536 #endif /* DOS_NT */
|
|
|
1537
|
|
|
1538 /* Get variable value */
|
|
|
1539 o = (Bufbyte *) egetenv ((char *) target);
|
|
|
1540 if (!o)
|
|
|
1541 goto badvar;
|
|
|
1542
|
|
|
1543 strcpy ((char *) x, (char *) o);
|
|
|
1544 x += strlen ((char *) o);
|
|
|
1545 }
|
|
|
1546
|
|
|
1547 *x = 0;
|
|
|
1548
|
|
|
1549 /* If /~ or // appears, discard everything through first slash. */
|
|
|
1550
|
|
|
1551 for (p = xnm; p != x; p++)
|
|
|
1552 if ((p[0] == '~'
|
|
211
|
1553 #if defined (APOLLO) || defined (WINDOWSNT)
|
|
0
|
1554 || (IS_DIRECTORY_SEP (p[0]) && p - 1 != xnm)
|
|
211
|
1555 #else /* not (APOLLO || WINDOWSNT) */
|
|
|
1556 || IS_DIRECTORY_SEP (p[0])
|
|
|
1557 #endif /* APOLLO || WINDOWSNT */
|
|
0
|
1558 )
|
|
|
1559 /* don't do p[-1] if that would go off the beginning --jwz */
|
|
|
1560 && p != nm && p > xnm && IS_DIRECTORY_SEP (p[-1]))
|
|
|
1561 xnm = p;
|
|
|
1562 #ifdef DOS_NT
|
|
211
|
1563 else if (IS_DRIVE (p[0]) && p[1] == ':'
|
|
|
1564 && p > nm && IS_DIRECTORY_SEP (p[-1]))
|
|
0
|
1565 xnm = p;
|
|
|
1566 #endif
|
|
|
1567
|
|
|
1568 return make_string (xnm, x - xnm);
|
|
|
1569
|
|
|
1570 badsubst:
|
|
|
1571 error ("Bad format environment-variable substitution");
|
|
|
1572 missingclose:
|
|
|
1573 error ("Missing \"}\" in environment-variable substitution");
|
|
|
1574 badvar:
|
|
|
1575 error ("Substituting nonexistent environment variable \"%s\"",
|
|
|
1576 target);
|
|
|
1577
|
|
|
1578 /* NOTREACHED */
|
|
|
1579 return Qnil; /* suppress compiler warning */
|
|
|
1580 }
|
|
|
1581
|
|
211
|
1582 /* A slightly faster and more convenient way to get
|
|
|
1583 (directory-file-name (expand-file-name FOO)). */
|
|
0
|
1584
|
|
|
1585 Lisp_Object
|
|
|
1586 expand_and_dir_to_file (Lisp_Object filename, Lisp_Object defdir)
|
|
|
1587 {
|
|
116
|
1588 /* This function can call lisp */
|
|
0
|
1589 Lisp_Object abspath;
|
|
|
1590 struct gcpro gcpro1;
|
|
|
1591
|
|
|
1592 abspath = Fexpand_file_name (filename, defdir);
|
|
116
|
1593 GCPRO1 (abspath);
|
|
0
|
1594 /* Remove final slash, if any (unless path is root).
|
|
|
1595 stat behaves differently depending! */
|
|
16
|
1596 if (XSTRING_LENGTH (abspath) > 1
|
|
82
|
1597 && IS_DIRECTORY_SEP (XSTRING_BYTE (abspath, XSTRING_LENGTH (abspath) - 1))
|
|
|
1598 && !IS_DEVICE_SEP (XSTRING_BYTE (abspath, XSTRING_LENGTH (abspath) - 2)))
|
|
0
|
1599 /* We cannot take shortcuts; they might be wrong for magic file names. */
|
|
|
1600 abspath = Fdirectory_file_name (abspath);
|
|
|
1601 UNGCPRO;
|
|
|
1602 return abspath;
|
|
|
1603 }
|
|
|
1604
|
|
|
1605 /* Signal an error if the file ABSNAME already exists.
|
|
|
1606 If INTERACTIVE is nonzero, ask the user whether to proceed,
|
|
|
1607 and bypass the error if the user says to go ahead.
|
|
|
1608 QUERYSTRING is a name for the action that is being considered
|
|
|
1609 to alter the file.
|
|
|
1610 *STATPTR is used to store the stat information if the file exists.
|
|
|
1611 If the file does not exist, STATPTR->st_mode is set to 0. */
|
|
|
1612
|
|
|
1613 static void
|
|
|
1614 barf_or_query_if_file_exists (Lisp_Object absname, CONST char *querystring,
|
|
|
1615 int interactive, struct stat *statptr)
|
|
|
1616 {
|
|
120
|
1617 /* This function can GC. GC checked 1997.04.06. */
|
|
0
|
1618 struct stat statbuf;
|
|
|
1619
|
|
|
1620 /* stat is a good way to tell whether the file exists,
|
|
|
1621 regardless of what access permissions it has. */
|
|
16
|
1622 if (stat ((char *) XSTRING_DATA (absname), &statbuf) >= 0)
|
|
0
|
1623 {
|
|
|
1624 Lisp_Object tem;
|
|
116
|
1625
|
|
0
|
1626 if (interactive)
|
|
116
|
1627 {
|
|
|
1628 Lisp_Object prompt;
|
|
|
1629 struct gcpro gcpro1;
|
|
|
1630
|
|
|
1631 prompt = emacs_doprnt_string_c
|
|
0
|
1632 ((CONST Bufbyte *) GETTEXT ("File %s already exists; %s anyway? "),
|
|
16
|
1633 Qnil, -1, XSTRING_DATA (absname),
|
|
116
|
1634 GETTEXT (querystring));
|
|
151
|
1635
|
|
116
|
1636 GCPRO1 (prompt);
|
|
|
1637 tem = call1 (Qyes_or_no_p, prompt);
|
|
|
1638 UNGCPRO;
|
|
|
1639 }
|
|
0
|
1640 else
|
|
|
1641 tem = Qnil;
|
|
116
|
1642
|
|
0
|
1643 if (NILP (tem))
|
|
|
1644 Fsignal (Qfile_already_exists,
|
|
|
1645 list2 (build_translated_string ("File already exists"),
|
|
|
1646 absname));
|
|
|
1647 if (statptr)
|
|
|
1648 *statptr = statbuf;
|
|
|
1649 }
|
|
|
1650 else
|
|
|
1651 {
|
|
|
1652 if (statptr)
|
|
|
1653 statptr->st_mode = 0;
|
|
|
1654 }
|
|
|
1655 return;
|
|
|
1656 }
|
|
|
1657
|
|
20
|
1658 DEFUN ("copy-file", Fcopy_file, 2, 4,
|
|
|
1659 "fCopy file: \nFCopy %s to file: \np\nP", /*
|
|
0
|
1660 Copy FILE to NEWNAME. Both args must be strings.
|
|
|
1661 Signals a `file-already-exists' error if file NEWNAME already exists,
|
|
|
1662 unless a third argument OK-IF-ALREADY-EXISTS is supplied and non-nil.
|
|
|
1663 A number as third arg means request confirmation if NEWNAME already exists.
|
|
|
1664 This is what happens in interactive use with M-x.
|
|
|
1665 Fourth arg KEEP-TIME non-nil means give the new file the same
|
|
|
1666 last-modified time as the old one. (This works on only some systems.)
|
|
|
1667 A prefix arg makes KEEP-TIME non-nil.
|
|
20
|
1668 */
|
|
74
|
1669 (filename, newname, ok_if_already_exists, keep_time))
|
|
0
|
1670 {
|
|
120
|
1671 /* This function can GC. GC checked 1997.04.06. */
|
|
0
|
1672 int ifd, ofd, n;
|
|
|
1673 char buf[16 * 1024];
|
|
|
1674 struct stat st, out_st;
|
|
|
1675 Lisp_Object handler;
|
|
|
1676 int speccount = specpdl_depth ();
|
|
|
1677 struct gcpro gcpro1, gcpro2;
|
|
|
1678 /* Lisp_Object args[6]; */
|
|
|
1679 int input_file_statable_p;
|
|
|
1680
|
|
|
1681 GCPRO2 (filename, newname);
|
|
|
1682 CHECK_STRING (filename);
|
|
|
1683 CHECK_STRING (newname);
|
|
|
1684 filename = Fexpand_file_name (filename, Qnil);
|
|
|
1685 newname = Fexpand_file_name (newname, Qnil);
|
|
|
1686
|
|
|
1687 /* If the input file name has special constructs in it,
|
|
|
1688 call the corresponding file handler. */
|
|
|
1689 handler = Ffind_file_name_handler (filename, Qcopy_file);
|
|
|
1690 /* Likewise for output file name. */
|
|
|
1691 if (NILP (handler))
|
|
|
1692 handler = Ffind_file_name_handler (newname, Qcopy_file);
|
|
|
1693 if (!NILP (handler))
|
|
|
1694 {
|
|
|
1695 UNGCPRO;
|
|
|
1696 return call5 (handler, Qcopy_file, filename, newname,
|
|
74
|
1697 ok_if_already_exists, keep_time);
|
|
0
|
1698 }
|
|
|
1699
|
|
|
1700 /* When second argument is a directory, copy the file into it.
|
|
|
1701 (copy-file "foo" "bar/") == (copy-file "foo" "bar/foo")
|
|
|
1702 */
|
|
|
1703 if (!NILP (Ffile_directory_p (newname)))
|
|
|
1704 {
|
|
|
1705 Lisp_Object args[3];
|
|
|
1706 struct gcpro ngcpro1;
|
|
|
1707 int i = 1;
|
|
|
1708
|
|
151
|
1709 args[0] = newname;
|
|
0
|
1710 args[1] = Qnil; args[2] = Qnil;
|
|
151
|
1711 NGCPRO1 (*args);
|
|
0
|
1712 ngcpro1.nvars = 3;
|
|
82
|
1713 if (XSTRING_BYTE (newname, XSTRING_LENGTH (newname) - 1) != '/')
|
|
0
|
1714 args[i++] = build_string ("/");
|
|
|
1715 args[i++] = Ffile_name_nondirectory (filename);
|
|
|
1716 newname = Fconcat (i, args);
|
|
|
1717 NUNGCPRO;
|
|
|
1718 }
|
|
|
1719
|
|
|
1720 if (NILP (ok_if_already_exists)
|
|
|
1721 || INTP (ok_if_already_exists))
|
|
|
1722 barf_or_query_if_file_exists (newname, "copy to it",
|
|
|
1723 INTP (ok_if_already_exists), &out_st);
|
|
16
|
1724 else if (stat ((CONST char *) XSTRING_DATA (newname), &out_st) < 0)
|
|
0
|
1725 out_st.st_mode = 0;
|
|
|
1726
|
|
225
|
1727 ifd = interruptible_open ((char *) XSTRING_DATA (filename), O_RDONLY, 0);
|
|
0
|
1728 if (ifd < 0)
|
|
227
|
1729 report_file_error ("Opening input file", list1 (filename));
|
|
0
|
1730
|
|
|
1731 record_unwind_protect (close_file_unwind, make_int (ifd));
|
|
|
1732
|
|
|
1733 /* We can only copy regular files and symbolic links. Other files are not
|
|
|
1734 copyable by us. */
|
|
|
1735 input_file_statable_p = (fstat (ifd, &st) >= 0);
|
|
|
1736
|
|
|
1737 #ifndef DOS_NT
|
|
|
1738 if (out_st.st_mode != 0
|
|
|
1739 && st.st_dev == out_st.st_dev && st.st_ino == out_st.st_ino)
|
|
|
1740 {
|
|
|
1741 errno = 0;
|
|
|
1742 report_file_error ("Input and output files are the same",
|
|
227
|
1743 list2 (filename, newname));
|
|
0
|
1744 }
|
|
|
1745 #endif
|
|
|
1746
|
|
|
1747 #if defined (S_ISREG) && defined (S_ISLNK)
|
|
|
1748 if (input_file_statable_p)
|
|
|
1749 {
|
|
|
1750 if (!(S_ISREG (st.st_mode))
|
|
|
1751 /* XEmacs: have to allow S_ISCHR in order to copy /dev/null */
|
|
|
1752 #ifdef S_ISCHR
|
|
|
1753 && !(S_ISCHR (st.st_mode))
|
|
|
1754 #endif
|
|
|
1755 && !(S_ISLNK (st.st_mode)))
|
|
|
1756 {
|
|
|
1757 #if defined (EISDIR)
|
|
|
1758 /* Get a better looking error message. */
|
|
|
1759 errno = EISDIR;
|
|
|
1760 #endif /* EISDIR */
|
|
227
|
1761 report_file_error ("Non-regular file", list1 (filename));
|
|
0
|
1762 }
|
|
|
1763 }
|
|
|
1764 #endif /* S_ISREG && S_ISLNK */
|
|
|
1765
|
|
|
1766 #ifdef MSDOS
|
|
|
1767 /* System's default file type was set to binary by _fmode in emacs.c. */
|
|
16
|
1768 ofd = creat ((char *) XSTRING_DATA (newname), S_IREAD | S_IWRITE);
|
|
0
|
1769 #else /* not MSDOS */
|
|
16
|
1770 ofd = creat ((char *) XSTRING_DATA (newname), 0666);
|
|
0
|
1771 #endif /* not MSDOS */
|
|
|
1772 if (ofd < 0)
|
|
|
1773 report_file_error ("Opening output file", list1 (newname));
|
|
|
1774
|
|
|
1775 {
|
|
|
1776 Lisp_Object ofd_locative = noseeum_cons (make_int (ofd), Qnil);
|
|
|
1777
|
|
|
1778 record_unwind_protect (close_file_unwind, ofd_locative);
|
|
|
1779
|
|
|
1780 while ((n = read_allowing_quit (ifd, buf, sizeof (buf))) > 0)
|
|
|
1781 {
|
|
|
1782 if (write_allowing_quit (ofd, buf, n) != n)
|
|
|
1783 report_file_error ("I/O error", list1 (newname));
|
|
|
1784 }
|
|
|
1785
|
|
|
1786 /* Closing the output clobbers the file times on some systems. */
|
|
|
1787 if (close (ofd) < 0)
|
|
227
|
1788 report_file_error ("I/O error", list1 (newname));
|
|
0
|
1789
|
|
|
1790 if (input_file_statable_p)
|
|
|
1791 {
|
|
74
|
1792 if (!NILP (keep_time))
|
|
0
|
1793 {
|
|
|
1794 EMACS_TIME atime, mtime;
|
|
|
1795 EMACS_SET_SECS_USECS (atime, st.st_atime, 0);
|
|
|
1796 EMACS_SET_SECS_USECS (mtime, st.st_mtime, 0);
|
|
16
|
1797 if (set_file_times ((char *) XSTRING_DATA (newname), atime,
|
|
0
|
1798 mtime))
|
|
227
|
1799 report_file_error ("I/O error", list1 (newname));
|
|
0
|
1800 }
|
|
|
1801 #ifndef MSDOS
|
|
16
|
1802 chmod ((CONST char *) XSTRING_DATA (newname),
|
|
0
|
1803 st.st_mode & 07777);
|
|
|
1804 #else /* MSDOS */
|
|
|
1805 #if defined (__DJGPP__) && __DJGPP__ > 1
|
|
|
1806 /* In DJGPP v2.0 and later, fstat usually returns true file mode bits,
|
|
|
1807 and if it can't, it tells so. Otherwise, under MSDOS we usually
|
|
|
1808 get only the READ bit, which will make the copied file read-only,
|
|
|
1809 so it's better not to chmod at all. */
|
|
|
1810 if ((_djstat_flags & _STFAIL_WRITEBIT) == 0)
|
|
16
|
1811 chmod ((char *) XSTRING_DATA (newname), st.st_mode & 07777);
|
|
0
|
1812 #endif /* DJGPP version 2 or newer */
|
|
|
1813 #endif /* MSDOS */
|
|
|
1814 }
|
|
|
1815
|
|
|
1816 /* We'll close it by hand */
|
|
|
1817 XCAR (ofd_locative) = Qnil;
|
|
|
1818
|
|
|
1819 /* Close ifd */
|
|
|
1820 unbind_to (speccount, Qnil);
|
|
|
1821 }
|
|
|
1822
|
|
|
1823 UNGCPRO;
|
|
|
1824 return Qnil;
|
|
|
1825 }
|
|
|
1826
|
|
20
|
1827 DEFUN ("make-directory-internal", Fmake_directory_internal, 1, 1, 0, /*
|
|
0
|
1828 Create a directory. One argument, a file name string.
|
|
20
|
1829 */
|
|
173
|
1830 (dirname_))
|
|
0
|
1831 {
|
|
120
|
1832 /* This function can GC. GC checked 1997.04.06. */
|
|
0
|
1833 char dir [MAXPATHLEN];
|
|
|
1834 Lisp_Object handler;
|
|
|
1835 struct gcpro gcpro1;
|
|
151
|
1836
|
|
173
|
1837 CHECK_STRING (dirname_);
|
|
|
1838 dirname_ = Fexpand_file_name (dirname_, Qnil);
|
|
|
1839
|
|
|
1840 GCPRO1 (dirname_);
|
|
|
1841 handler = Ffind_file_name_handler (dirname_, Qmake_directory_internal);
|
|
0
|
1842 UNGCPRO;
|
|
|
1843 if (!NILP (handler))
|
|
173
|
1844 return (call2 (handler, Qmake_directory_internal, dirname_));
|
|
|
1845
|
|
|
1846 if (XSTRING_LENGTH (dirname_) > (sizeof (dir) - 1))
|
|
0
|
1847 {
|
|
|
1848 return Fsignal (Qfile_error,
|
|
|
1849 list3 (build_translated_string ("Creating directory"),
|
|
|
1850 build_translated_string ("pathame too long"),
|
|
173
|
1851 dirname_));
|
|
0
|
1852 }
|
|
173
|
1853 strncpy (dir, (char *) XSTRING_DATA (dirname_),
|
|
|
1854 XSTRING_LENGTH (dirname_) + 1);
|
|
0
|
1855
|
|
173
|
1856 if (dir [XSTRING_LENGTH (dirname_) - 1] == '/')
|
|
|
1857 dir [XSTRING_LENGTH (dirname_) - 1] = 0;
|
|
0
|
1858
|
|
|
1859 #ifdef WINDOWSNT
|
|
|
1860 if (mkdir (dir) != 0)
|
|
|
1861 #else
|
|
|
1862 if (mkdir (dir, 0777) != 0)
|
|
|
1863 #endif
|
|
173
|
1864 report_file_error ("Creating directory", list1 (dirname_));
|
|
0
|
1865
|
|
|
1866 return Qnil;
|
|
|
1867 }
|
|
|
1868
|
|
20
|
1869 DEFUN ("delete-directory", Fdelete_directory, 1, 1, "FDelete directory: ", /*
|
|
0
|
1870 Delete a directory. One argument, a file name or directory name string.
|
|
20
|
1871 */
|
|
173
|
1872 (dirname_))
|
|
0
|
1873 {
|
|
120
|
1874 /* This function can GC. GC checked 1997.04.06. */
|
|
0
|
1875 Lisp_Object handler;
|
|
|
1876 struct gcpro gcpro1;
|
|
151
|
1877
|
|
173
|
1878 CHECK_STRING (dirname_);
|
|
|
1879
|
|
|
1880 GCPRO1 (dirname_);
|
|
|
1881 dirname_ = Fexpand_file_name (dirname_, Qnil);
|
|
|
1882 dirname_ = Fdirectory_file_name (dirname_);
|
|
|
1883
|
|
|
1884 handler = Ffind_file_name_handler (dirname_, Qdelete_directory);
|
|
0
|
1885 UNGCPRO;
|
|
|
1886 if (!NILP (handler))
|
|
173
|
1887 return (call2 (handler, Qdelete_directory, dirname_));
|
|
|
1888
|
|
|
1889 if (rmdir ((char *) XSTRING_DATA (dirname_)) != 0)
|
|
|
1890 report_file_error ("Removing directory", list1 (dirname_));
|
|
0
|
1891
|
|
|
1892 return Qnil;
|
|
|
1893 }
|
|
|
1894
|
|
20
|
1895 DEFUN ("delete-file", Fdelete_file, 1, 1, "fDelete file: ", /*
|
|
0
|
1896 Delete specified file. One argument, a file name string.
|
|
|
1897 If file has multiple names, it continues to exist with the other names.
|
|
20
|
1898 */
|
|
|
1899 (filename))
|
|
0
|
1900 {
|
|
120
|
1901 /* This function can GC. GC checked 1997.04.06. */
|
|
0
|
1902 Lisp_Object handler;
|
|
|
1903 struct gcpro gcpro1;
|
|
151
|
1904
|
|
0
|
1905 CHECK_STRING (filename);
|
|
|
1906 filename = Fexpand_file_name (filename, Qnil);
|
|
|
1907
|
|
114
|
1908 GCPRO1 (filename);
|
|
0
|
1909 handler = Ffind_file_name_handler (filename, Qdelete_file);
|
|
|
1910 UNGCPRO;
|
|
|
1911 if (!NILP (handler))
|
|
|
1912 return call2 (handler, Qdelete_file, filename);
|
|
|
1913
|
|
16
|
1914 if (0 > unlink ((char *) XSTRING_DATA (filename)))
|
|
0
|
1915 report_file_error ("Removing old name", list1 (filename));
|
|
|
1916 return Qnil;
|
|
|
1917 }
|
|
|
1918
|
|
|
1919 static Lisp_Object
|
|
|
1920 internal_delete_file_1 (Lisp_Object ignore, Lisp_Object ignore2)
|
|
|
1921 {
|
|
|
1922 return Qt;
|
|
|
1923 }
|
|
|
1924
|
|
|
1925 /* Delete file FILENAME, returning 1 if successful and 0 if failed. */
|
|
|
1926
|
|
|
1927 int
|
|
|
1928 internal_delete_file (Lisp_Object filename)
|
|
|
1929 {
|
|
120
|
1930 /* This function can GC. GC checked 1997.04.06. */
|
|
0
|
1931 return NILP (condition_case_1 (Qt, Fdelete_file, filename,
|
|
|
1932 internal_delete_file_1, Qnil));
|
|
|
1933 }
|
|
|
1934
|
|
20
|
1935 DEFUN ("rename-file", Frename_file, 2, 3,
|
|
|
1936 "fRename file: \nFRename %s to file: \np", /*
|
|
0
|
1937 Rename FILE as NEWNAME. Both args strings.
|
|
|
1938 If file has names other than FILE, it continues to have those names.
|
|
|
1939 Signals a `file-already-exists' error if a file NEWNAME already exists
|
|
|
1940 unless optional third argument OK-IF-ALREADY-EXISTS is non-nil.
|
|
|
1941 A number as third arg means request confirmation if NEWNAME already exists.
|
|
|
1942 This is what happens in interactive use with M-x.
|
|
20
|
1943 */
|
|
|
1944 (filename, newname, ok_if_already_exists))
|
|
0
|
1945 {
|
|
120
|
1946 /* This function can GC. GC checked 1997.04.06. */
|
|
0
|
1947 Lisp_Object handler;
|
|
|
1948 struct gcpro gcpro1, gcpro2;
|
|
|
1949
|
|
|
1950 GCPRO2 (filename, newname);
|
|
|
1951 CHECK_STRING (filename);
|
|
|
1952 CHECK_STRING (newname);
|
|
|
1953 filename = Fexpand_file_name (filename, Qnil);
|
|
|
1954 newname = Fexpand_file_name (newname, Qnil);
|
|
|
1955
|
|
|
1956 /* If the file name has special constructs in it,
|
|
|
1957 call the corresponding file handler. */
|
|
|
1958 handler = Ffind_file_name_handler (filename, Qrename_file);
|
|
|
1959 if (NILP (handler))
|
|
|
1960 handler = Ffind_file_name_handler (newname, Qrename_file);
|
|
|
1961 if (!NILP (handler))
|
|
|
1962 {
|
|
|
1963 UNGCPRO;
|
|
|
1964 return call4 (handler, Qrename_file,
|
|
|
1965 filename, newname, ok_if_already_exists);
|
|
|
1966 }
|
|
|
1967
|
|
|
1968 /* When second argument is a directory, rename the file into it.
|
|
|
1969 (rename-file "foo" "bar/") == (rename-file "foo" "bar/foo")
|
|
|
1970 */
|
|
|
1971 if (!NILP (Ffile_directory_p (newname)))
|
|
|
1972 {
|
|
|
1973 Lisp_Object args[3];
|
|
|
1974 struct gcpro ngcpro1;
|
|
|
1975 int i = 1;
|
|
|
1976
|
|
151
|
1977 args[0] = newname;
|
|
0
|
1978 args[1] = Qnil; args[2] = Qnil;
|
|
151
|
1979 NGCPRO1 (*args);
|
|
0
|
1980 ngcpro1.nvars = 3;
|
|
16
|
1981 if (XSTRING_BYTE (newname, XSTRING_LENGTH (newname) - 1) != '/')
|
|
0
|
1982 args[i++] = build_string ("/");
|
|
|
1983 args[i++] = Ffile_name_nondirectory (filename);
|
|
|
1984 newname = Fconcat (i, args);
|
|
|
1985 NUNGCPRO;
|
|
|
1986 }
|
|
|
1987
|
|
|
1988 if (NILP (ok_if_already_exists)
|
|
|
1989 || INTP (ok_if_already_exists))
|
|
|
1990 barf_or_query_if_file_exists (newname, "rename to it",
|
|
|
1991 INTP (ok_if_already_exists), 0);
|
|
|
1992
|
|
211
|
1993 /* Syncing with FSF 19.34.6 note: FSF does not have conditional code for
|
|
|
1994 WINDOWSNT here; I've removed it. --marcpa */
|
|
|
1995
|
|
0
|
1996 /* FSFmacs only calls rename() here under BSD 4.1, and calls
|
|
|
1997 link() and unlink() otherwise, but that's bogus. Sometimes
|
|
|
1998 rename() succeeds where link()/unlink() fail, and we have
|
|
|
1999 configure check for rename() and emulate using link()/unlink()
|
|
|
2000 if necessary. */
|
|
16
|
2001 if (0 > rename ((char *) XSTRING_DATA (filename),
|
|
|
2002 (char *) XSTRING_DATA (newname)))
|
|
0
|
2003 {
|
|
|
2004 if (errno == EXDEV)
|
|
|
2005 {
|
|
|
2006 Fcopy_file (filename, newname,
|
|
|
2007 /* We have already prompted if it was an integer,
|
|
|
2008 so don't have copy-file prompt again. */
|
|
|
2009 ((NILP (ok_if_already_exists)) ? Qnil : Qt),
|
|
|
2010 Qt);
|
|
|
2011 Fdelete_file (filename);
|
|
|
2012 }
|
|
|
2013 else
|
|
|
2014 {
|
|
|
2015 report_file_error ("Renaming", list2 (filename, newname));
|
|
|
2016 }
|
|
|
2017 }
|
|
|
2018 UNGCPRO;
|
|
|
2019 return Qnil;
|
|
|
2020 }
|
|
|
2021
|
|
20
|
2022 DEFUN ("add-name-to-file", Fadd_name_to_file, 2, 3,
|
|
|
2023 "fAdd name to file: \nFName to add to %s: \np", /*
|
|
0
|
2024 Give FILE additional name NEWNAME. Both args strings.
|
|
|
2025 Signals a `file-already-exists' error if a file NEWNAME already exists
|
|
|
2026 unless optional third argument OK-IF-ALREADY-EXISTS is non-nil.
|
|
|
2027 A number as third arg means request confirmation if NEWNAME already exists.
|
|
|
2028 This is what happens in interactive use with M-x.
|
|
20
|
2029 */
|
|
|
2030 (filename, newname, ok_if_already_exists))
|
|
0
|
2031 {
|
|
120
|
2032 /* This function can GC. GC checked 1997.04.06. */
|
|
0
|
2033 Lisp_Object handler;
|
|
|
2034 struct gcpro gcpro1, gcpro2;
|
|
|
2035
|
|
|
2036 GCPRO2 (filename, newname);
|
|
|
2037 CHECK_STRING (filename);
|
|
|
2038 CHECK_STRING (newname);
|
|
|
2039 filename = Fexpand_file_name (filename, Qnil);
|
|
|
2040 newname = Fexpand_file_name (newname, Qnil);
|
|
|
2041
|
|
|
2042 /* If the file name has special constructs in it,
|
|
|
2043 call the corresponding file handler. */
|
|
|
2044 handler = Ffind_file_name_handler (filename, Qadd_name_to_file);
|
|
|
2045 if (!NILP (handler))
|
|
|
2046 RETURN_UNGCPRO (call4 (handler, Qadd_name_to_file, filename,
|
|
|
2047 newname, ok_if_already_exists));
|
|
|
2048
|
|
|
2049 /* If the new name has special constructs in it,
|
|
|
2050 call the corresponding file handler. */
|
|
|
2051 handler = Ffind_file_name_handler (newname, Qadd_name_to_file);
|
|
|
2052 if (!NILP (handler))
|
|
|
2053 RETURN_UNGCPRO (call4 (handler, Qadd_name_to_file, filename,
|
|
|
2054 newname, ok_if_already_exists));
|
|
|
2055
|
|
|
2056 if (NILP (ok_if_already_exists)
|
|
|
2057 || INTP (ok_if_already_exists))
|
|
|
2058 barf_or_query_if_file_exists (newname, "make it a new name",
|
|
|
2059 INTP (ok_if_already_exists), 0);
|
|
211
|
2060 /* Syncing with FSF 19.34.6 note: FSF does not report a file error
|
|
|
2061 on NT here. --marcpa */
|
|
213
|
2062 /* But FSF #defines link as sys_link which is supplied in nt.c. We can't do
|
|
|
2063 that because sysfile.h defines sys_link depending on ENCAPSULATE_LINK.
|
|
|
2064 Reverted to previous behaviour pending a working fix. (jhar) */
|
|
|
2065 #if defined(WINDOWSNT)
|
|
0
|
2066 /* Windows does not support this operation. */
|
|
|
2067 report_file_error ("Adding new name", Flist (2, &filename));
|
|
213
|
2068 #else /* not defined(WINDOWSNT) */
|
|
0
|
2069
|
|
16
|
2070 unlink ((char *) XSTRING_DATA (newname));
|
|
|
2071 if (0 > link ((char *) XSTRING_DATA (filename),
|
|
|
2072 (char *) XSTRING_DATA (newname)))
|
|
0
|
2073 {
|
|
|
2074 report_file_error ("Adding new name",
|
|
|
2075 list2 (filename, newname));
|
|
|
2076 }
|
|
213
|
2077 #endif /* defined(WINDOWSNT) */
|
|
0
|
2078
|
|
|
2079 UNGCPRO;
|
|
|
2080 return Qnil;
|
|
|
2081 }
|
|
|
2082
|
|
|
2083 #ifdef S_IFLNK
|
|
20
|
2084 DEFUN ("make-symbolic-link", Fmake_symbolic_link, 2, 3,
|
|
|
2085 "FMake symbolic link to file: \nFMake symbolic link to file %s: \np", /*
|
|
0
|
2086 Make a symbolic link to FILENAME, named LINKNAME. Both args strings.
|
|
|
2087 Signals a `file-already-exists' error if a file LINKNAME already exists
|
|
|
2088 unless optional third argument OK-IF-ALREADY-EXISTS is non-nil.
|
|
|
2089 A number as third arg means request confirmation if LINKNAME already exists.
|
|
|
2090 This happens for interactive use with M-x.
|
|
20
|
2091 */
|
|
|
2092 (filename, linkname, ok_if_already_exists))
|
|
0
|
2093 {
|
|
120
|
2094 /* This function can GC. GC checked 1997.06.04. */
|
|
0
|
2095 Lisp_Object handler;
|
|
|
2096 struct gcpro gcpro1, gcpro2;
|
|
|
2097
|
|
|
2098 GCPRO2 (filename, linkname);
|
|
|
2099 CHECK_STRING (filename);
|
|
|
2100 CHECK_STRING (linkname);
|
|
|
2101 /* If the link target has a ~, we must expand it to get
|
|
|
2102 a truly valid file name. Otherwise, do not expand;
|
|
|
2103 we want to permit links to relative file names. */
|
|
211
|
2104 if (XSTRING_BYTE (filename, 0) == '~')
|
|
0
|
2105 filename = Fexpand_file_name (filename, Qnil);
|
|
|
2106 linkname = Fexpand_file_name (linkname, Qnil);
|
|
|
2107
|
|
|
2108 /* If the file name has special constructs in it,
|
|
|
2109 call the corresponding file handler. */
|
|
|
2110 handler = Ffind_file_name_handler (filename, Qmake_symbolic_link);
|
|
|
2111 if (!NILP (handler))
|
|
|
2112 RETURN_UNGCPRO (call4 (handler, Qmake_symbolic_link, filename, linkname,
|
|
|
2113 ok_if_already_exists));
|
|
|
2114
|
|
|
2115 /* If the new link name has special constructs in it,
|
|
|
2116 call the corresponding file handler. */
|
|
|
2117 handler = Ffind_file_name_handler (linkname, Qmake_symbolic_link);
|
|
|
2118 if (!NILP (handler))
|
|
|
2119 RETURN_UNGCPRO (call4 (handler, Qmake_symbolic_link, filename,
|
|
|
2120 linkname, ok_if_already_exists));
|
|
|
2121
|
|
|
2122 if (NILP (ok_if_already_exists)
|
|
|
2123 || INTP (ok_if_already_exists))
|
|
|
2124 barf_or_query_if_file_exists (linkname, "make it a link",
|
|
|
2125 INTP (ok_if_already_exists), 0);
|
|
|
2126
|
|
16
|
2127 unlink ((char *) XSTRING_DATA (linkname));
|
|
|
2128 if (0 > symlink ((char *) XSTRING_DATA (filename),
|
|
|
2129 (char *) XSTRING_DATA (linkname)))
|
|
0
|
2130 {
|
|
|
2131 report_file_error ("Making symbolic link",
|
|
|
2132 list2 (filename, linkname));
|
|
|
2133 }
|
|
|
2134 UNGCPRO;
|
|
|
2135 return Qnil;
|
|
|
2136 }
|
|
|
2137 #endif /* S_IFLNK */
|
|
|
2138
|
|
|
2139 #ifdef HPUX_NET
|
|
|
2140
|
|
20
|
2141 DEFUN ("sysnetunam", Fsysnetunam, 2, 2, 0, /*
|
|
0
|
2142 Open a network connection to PATH using LOGIN as the login string.
|
|
20
|
2143 */
|
|
|
2144 (path, login))
|
|
0
|
2145 {
|
|
|
2146 int netresult;
|
|
151
|
2147
|
|
0
|
2148 CHECK_STRING (path);
|
|
151
|
2149 CHECK_STRING (login);
|
|
0
|
2150
|
|
|
2151 /* netunam, being a strange-o system call only used once, is not
|
|
|
2152 encapsulated. */
|
|
|
2153 {
|
|
|
2154 char *path_ext;
|
|
|
2155 char *login_ext;
|
|
|
2156
|
|
|
2157 GET_C_STRING_FILENAME_DATA_ALLOCA (path, path_ext);
|
|
|
2158 GET_C_STRING_EXT_DATA_ALLOCA (login, FORMAT_OS, login_ext);
|
|
151
|
2159
|
|
0
|
2160 netresult = netunam (path_ext, login_ext);
|
|
|
2161 }
|
|
|
2162
|
|
|
2163 if (netresult == -1)
|
|
|
2164 return Qnil;
|
|
|
2165 else
|
|
|
2166 return Qt;
|
|
|
2167 }
|
|
|
2168 #endif /* HPUX_NET */
|
|
|
2169
|
|
20
|
2170 DEFUN ("file-name-absolute-p", Ffile_name_absolute_p, 1, 1, 0, /*
|
|
0
|
2171 Return t if file FILENAME specifies an absolute path name.
|
|
|
2172 On Unix, this is a name starting with a `/' or a `~'.
|
|
20
|
2173 */
|
|
|
2174 (filename))
|
|
0
|
2175 {
|
|
116
|
2176 /* This function does not GC */
|
|
0
|
2177 Bufbyte *ptr;
|
|
|
2178
|
|
|
2179 CHECK_STRING (filename);
|
|
16
|
2180 ptr = XSTRING_DATA (filename);
|
|
0
|
2181 if (IS_DIRECTORY_SEP (*ptr) || *ptr == '~'
|
|
|
2182 #ifdef DOS_NT
|
|
211
|
2183 || (IS_DRIVE (*ptr) && ptr[1] == ':' && IS_DIRECTORY_SEP (ptr[2]))
|
|
0
|
2184 #endif
|
|
|
2185 )
|
|
|
2186 return Qt;
|
|
|
2187 else
|
|
|
2188 return Qnil;
|
|
|
2189 }
|
|
|
2190
|
|
|
2191 /* Return nonzero if file FILENAME exists and can be executed. */
|
|
|
2192
|
|
|
2193 static int
|
|
|
2194 check_executable (char *filename)
|
|
|
2195 {
|
|
|
2196 #ifdef DOS_NT
|
|
|
2197 int len = strlen (filename);
|
|
|
2198 char *suffix;
|
|
|
2199 struct stat st;
|
|
|
2200 if (stat (filename, &st) < 0)
|
|
|
2201 return 0;
|
|
211
|
2202 #if defined (WINDOWSNT)
|
|
|
2203 return ((st.st_mode & S_IEXEC) != 0);
|
|
|
2204 #else
|
|
0
|
2205 return (S_ISREG (st.st_mode)
|
|
|
2206 && len >= 5
|
|
|
2207 && (stricmp ((suffix = filename + len-4), ".com") == 0
|
|
|
2208 || stricmp (suffix, ".exe") == 0
|
|
|
2209 || stricmp (suffix, ".bat") == 0)
|
|
|
2210 || (st.st_mode & S_IFMT) == S_IFDIR);
|
|
211
|
2211 #endif /* not WINDOWSNT */
|
|
0
|
2212 #else /* not DOS_NT */
|
|
|
2213 #ifdef HAVE_EACCESS
|
|
183
|
2214 return eaccess (filename, 1) >= 0;
|
|
0
|
2215 #else
|
|
|
2216 /* Access isn't quite right because it uses the real uid
|
|
|
2217 and we really want to test with the effective uid.
|
|
|
2218 But Unix doesn't give us a right way to do it. */
|
|
183
|
2219 return access (filename, 1) >= 0;
|
|
|
2220 #endif /* HAVE_EACCESS */
|
|
0
|
2221 #endif /* not DOS_NT */
|
|
|
2222 }
|
|
|
2223
|
|
|
2224 /* Return nonzero if file FILENAME exists and can be written. */
|
|
|
2225
|
|
|
2226 static int
|
|
|
2227 check_writable (CONST char *filename)
|
|
|
2228 {
|
|
|
2229 #ifdef MSDOS
|
|
|
2230 struct stat st;
|
|
|
2231 if (stat (filename, &st) < 0)
|
|
|
2232 return 0;
|
|
|
2233 return (st.st_mode & S_IWRITE || (st.st_mode & S_IFMT) == S_IFDIR);
|
|
|
2234 #else /* not MSDOS */
|
|
|
2235 #ifdef HAVE_EACCESS
|
|
|
2236 return (eaccess (filename, 2) >= 0);
|
|
|
2237 #else
|
|
|
2238 /* Access isn't quite right because it uses the real uid
|
|
|
2239 and we really want to test with the effective uid.
|
|
|
2240 But Unix doesn't give us a right way to do it.
|
|
|
2241 Opening with O_WRONLY could work for an ordinary file,
|
|
|
2242 but would lose for directories. */
|
|
|
2243 return (access (filename, 2) >= 0);
|
|
|
2244 #endif
|
|
|
2245 #endif /* not MSDOS */
|
|
|
2246 }
|
|
|
2247
|
|
20
|
2248 DEFUN ("file-exists-p", Ffile_exists_p, 1, 1, 0, /*
|
|
0
|
2249 Return t if file FILENAME exists. (This does not mean you can read it.)
|
|
|
2250 See also `file-readable-p' and `file-attributes'.
|
|
20
|
2251 */
|
|
|
2252 (filename))
|
|
0
|
2253 {
|
|
116
|
2254 /* This function can call lisp */
|
|
0
|
2255 Lisp_Object abspath;
|
|
|
2256 Lisp_Object handler;
|
|
|
2257 struct stat statbuf;
|
|
|
2258 struct gcpro gcpro1;
|
|
151
|
2259
|
|
0
|
2260 CHECK_STRING (filename);
|
|
|
2261 abspath = Fexpand_file_name (filename, Qnil);
|
|
|
2262
|
|
|
2263 /* If the file name has special constructs in it,
|
|
|
2264 call the corresponding file handler. */
|
|
|
2265 GCPRO1 (abspath);
|
|
|
2266 handler = Ffind_file_name_handler (abspath, Qfile_exists_p);
|
|
|
2267 UNGCPRO;
|
|
|
2268 if (!NILP (handler))
|
|
|
2269 return call2 (handler, Qfile_exists_p, abspath);
|
|
|
2270
|
|
16
|
2271 if (stat ((char *) XSTRING_DATA (abspath), &statbuf) >= 0)
|
|
0
|
2272 return (Qt);
|
|
|
2273 else
|
|
|
2274 return (Qnil);
|
|
|
2275 }
|
|
|
2276
|
|
20
|
2277 DEFUN ("file-executable-p", Ffile_executable_p, 1, 1, 0, /*
|
|
0
|
2278 Return t if FILENAME can be executed by you.
|
|
|
2279 For a directory, this means you can access files in that directory.
|
|
20
|
2280 */
|
|
|
2281 (filename))
|
|
70
|
2282
|
|
0
|
2283 {
|
|
124
|
2284 /* This function can GC. GC checked 1997.04.10. */
|
|
0
|
2285 Lisp_Object abspath;
|
|
|
2286 Lisp_Object handler;
|
|
|
2287 struct gcpro gcpro1;
|
|
151
|
2288
|
|
0
|
2289 CHECK_STRING (filename);
|
|
|
2290 abspath = Fexpand_file_name (filename, Qnil);
|
|
|
2291
|
|
|
2292 /* If the file name has special constructs in it,
|
|
|
2293 call the corresponding file handler. */
|
|
|
2294 GCPRO1 (abspath);
|
|
|
2295 handler = Ffind_file_name_handler (abspath, Qfile_executable_p);
|
|
|
2296 UNGCPRO;
|
|
|
2297 if (!NILP (handler))
|
|
|
2298 return call2 (handler, Qfile_executable_p, abspath);
|
|
|
2299
|
|
16
|
2300 return (check_executable ((char *) XSTRING_DATA (abspath))
|
|
0
|
2301 ? Qt : Qnil);
|
|
|
2302 }
|
|
|
2303
|
|
20
|
2304 DEFUN ("file-readable-p", Ffile_readable_p, 1, 1, 0, /*
|
|
0
|
2305 Return t if file FILENAME exists and you can read it.
|
|
|
2306 See also `file-exists-p' and `file-attributes'.
|
|
20
|
2307 */
|
|
|
2308 (filename))
|
|
0
|
2309 {
|
|
225
|
2310 /* This function can GC */
|
|
|
2311 Lisp_Object abspath = Qnil;
|
|
0
|
2312 Lisp_Object handler;
|
|
|
2313 int desc;
|
|
|
2314 struct gcpro gcpro1;
|
|
225
|
2315 GCPRO1 (abspath);
|
|
151
|
2316
|
|
0
|
2317 CHECK_STRING (filename);
|
|
|
2318 abspath = Fexpand_file_name (filename, Qnil);
|
|
|
2319
|
|
|
2320 /* If the file name has special constructs in it,
|
|
|
2321 call the corresponding file handler. */
|
|
|
2322 handler = Ffind_file_name_handler (abspath, Qfile_readable_p);
|
|
|
2323 if (!NILP (handler))
|
|
225
|
2324 RETURN_UNGCPRO (call2 (handler, Qfile_readable_p, abspath));
|
|
0
|
2325
|
|
211
|
2326 #ifdef DOS_NT
|
|
|
2327 /* Under MS-DOS and Windows, open does not work for directories. */
|
|
|
2328 if (access (XSTRING_DATA (abspath), 0) == 0)
|
|
|
2329 return Qt;
|
|
|
2330 return Qnil;
|
|
|
2331 #else /* not DOS_NT */
|
|
225
|
2332 desc = interruptible_open ((char *) XSTRING_DATA (abspath), O_RDONLY, 0);
|
|
|
2333 UNGCPRO;
|
|
0
|
2334 if (desc < 0)
|
|
|
2335 return Qnil;
|
|
|
2336 close (desc);
|
|
|
2337 return Qt;
|
|
211
|
2338 #endif /* not DOS_NT */
|
|
0
|
2339 }
|
|
|
2340
|
|
|
2341 /* Having this before file-symlink-p mysteriously caused it to be forgotten
|
|
|
2342 on the RT/PC. */
|
|
20
|
2343 DEFUN ("file-writable-p", Ffile_writable_p, 1, 1, 0, /*
|
|
0
|
2344 Return t if file FILENAME can be written or created by you.
|
|
20
|
2345 */
|
|
|
2346 (filename))
|
|
0
|
2347 {
|
|
124
|
2348 /* This function can GC. GC checked 1997.04.10. */
|
|
0
|
2349 Lisp_Object abspath, dir;
|
|
|
2350 Lisp_Object handler;
|
|
|
2351 struct stat statbuf;
|
|
|
2352 struct gcpro gcpro1;
|
|
151
|
2353
|
|
0
|
2354 CHECK_STRING (filename);
|
|
|
2355 abspath = Fexpand_file_name (filename, Qnil);
|
|
|
2356
|
|
|
2357 /* If the file name has special constructs in it,
|
|
|
2358 call the corresponding file handler. */
|
|
|
2359 GCPRO1 (abspath);
|
|
|
2360 handler = Ffind_file_name_handler (abspath, Qfile_writable_p);
|
|
|
2361 UNGCPRO;
|
|
|
2362 if (!NILP (handler))
|
|
|
2363 return call2 (handler, Qfile_writable_p, abspath);
|
|
|
2364
|
|
16
|
2365 if (stat ((char *) XSTRING_DATA (abspath), &statbuf) >= 0)
|
|
|
2366 return (check_writable ((char *) XSTRING_DATA (abspath))
|
|
0
|
2367 ? Qt : Qnil);
|
|
|
2368
|
|
|
2369
|
|
114
|
2370 GCPRO1 (abspath);
|
|
0
|
2371 dir = Ffile_name_directory (abspath);
|
|
114
|
2372 UNGCPRO;
|
|
209
|
2373 #ifdef MSDOS
|
|
0
|
2374 if (!NILP (dir))
|
|
114
|
2375 {
|
|
|
2376 GCPRO1(dir);
|
|
|
2377 dir = Fdirectory_file_name (dir);
|
|
|
2378 UNGCPRO;
|
|
|
2379 }
|
|
209
|
2380 #endif /* MSDOS */
|
|
16
|
2381 return (check_writable (!NILP (dir) ? (char *) XSTRING_DATA (dir)
|
|
0
|
2382 : "")
|
|
|
2383 ? Qt : Qnil);
|
|
|
2384 }
|
|
|
2385
|
|
20
|
2386 DEFUN ("file-symlink-p", Ffile_symlink_p, 1, 1, 0, /*
|
|
0
|
2387 Return non-nil if file FILENAME is the name of a symbolic link.
|
|
|
2388 The value is the name of the file to which it is linked.
|
|
|
2389 Otherwise returns nil.
|
|
20
|
2390 */
|
|
|
2391 (filename))
|
|
0
|
2392 {
|
|
124
|
2393 /* This function can GC. GC checked 1997.04.10. */
|
|
0
|
2394 #ifdef S_IFLNK
|
|
|
2395 char *buf;
|
|
|
2396 int bufsize;
|
|
|
2397 int valsize;
|
|
|
2398 Lisp_Object val;
|
|
|
2399 Lisp_Object handler;
|
|
|
2400 struct gcpro gcpro1;
|
|
151
|
2401
|
|
0
|
2402 CHECK_STRING (filename);
|
|
|
2403 filename = Fexpand_file_name (filename, Qnil);
|
|
|
2404
|
|
|
2405 /* If the file name has special constructs in it,
|
|
|
2406 call the corresponding file handler. */
|
|
116
|
2407 GCPRO1 (filename);
|
|
0
|
2408 handler = Ffind_file_name_handler (filename, Qfile_symlink_p);
|
|
116
|
2409 UNGCPRO;
|
|
0
|
2410 if (!NILP (handler))
|
|
|
2411 return call2 (handler, Qfile_symlink_p, filename);
|
|
|
2412
|
|
|
2413 bufsize = 100;
|
|
|
2414 while (1)
|
|
|
2415 {
|
|
185
|
2416 buf = xnew_array_and_zero (char, bufsize);
|
|
16
|
2417 valsize = readlink ((char *) XSTRING_DATA (filename),
|
|
0
|
2418 buf, bufsize);
|
|
|
2419 if (valsize < bufsize) break;
|
|
|
2420 /* Buffer was not long enough */
|
|
|
2421 xfree (buf);
|
|
|
2422 bufsize *= 2;
|
|
|
2423 }
|
|
|
2424 if (valsize == -1)
|
|
|
2425 {
|
|
|
2426 xfree (buf);
|
|
|
2427 return Qnil;
|
|
|
2428 }
|
|
|
2429 val = make_string ((Bufbyte *) buf, valsize);
|
|
|
2430 xfree (buf);
|
|
|
2431 return val;
|
|
|
2432 #else /* not S_IFLNK */
|
|
|
2433 return Qnil;
|
|
|
2434 #endif /* not S_IFLNK */
|
|
|
2435 }
|
|
|
2436
|
|
20
|
2437 DEFUN ("file-directory-p", Ffile_directory_p, 1, 1, 0, /*
|
|
0
|
2438 Return t if file FILENAME is the name of a directory as a file.
|
|
|
2439 A directory name spec may be given instead; then the value is t
|
|
|
2440 if the directory so specified exists and really is a directory.
|
|
20
|
2441 */
|
|
|
2442 (filename))
|
|
0
|
2443 {
|
|
124
|
2444 /* This function can GC. GC checked 1997.04.10. */
|
|
0
|
2445 Lisp_Object abspath;
|
|
|
2446 struct stat st;
|
|
|
2447 Lisp_Object handler;
|
|
|
2448 struct gcpro gcpro1;
|
|
151
|
2449
|
|
114
|
2450 GCPRO1 (current_buffer->directory);
|
|
0
|
2451 abspath = expand_and_dir_to_file (filename,
|
|
|
2452 current_buffer->directory);
|
|
|
2453 UNGCPRO;
|
|
|
2454
|
|
|
2455 /* If the file name has special constructs in it,
|
|
|
2456 call the corresponding file handler. */
|
|
|
2457 GCPRO1 (abspath);
|
|
|
2458 handler = Ffind_file_name_handler (abspath, Qfile_directory_p);
|
|
|
2459 UNGCPRO;
|
|
|
2460 if (!NILP (handler))
|
|
|
2461 return call2 (handler, Qfile_directory_p, abspath);
|
|
|
2462
|
|
16
|
2463 if (stat ((char *) XSTRING_DATA (abspath), &st) < 0)
|
|
0
|
2464 return Qnil;
|
|
|
2465 return (st.st_mode & S_IFMT) == S_IFDIR ? Qt : Qnil;
|
|
|
2466 }
|
|
|
2467
|
|
20
|
2468 DEFUN ("file-accessible-directory-p", Ffile_accessible_directory_p, 1, 1, 0, /*
|
|
0
|
2469 Return t if file FILENAME is the name of a directory as a file,
|
|
|
2470 and files in that directory can be opened by you. In order to use a
|
|
|
2471 directory as a buffer's current directory, this predicate must return true.
|
|
|
2472 A directory name spec may be given instead; then the value is t
|
|
|
2473 if the directory so specified exists and really is a readable and
|
|
|
2474 searchable directory.
|
|
20
|
2475 */
|
|
|
2476 (filename))
|
|
0
|
2477 {
|
|
124
|
2478 /* This function can GC. GC checked 1997.04.10. */
|
|
0
|
2479 Lisp_Object handler;
|
|
|
2480
|
|
|
2481 /* If the file name has special constructs in it,
|
|
|
2482 call the corresponding file handler. */
|
|
|
2483 handler = Ffind_file_name_handler (filename, Qfile_accessible_directory_p);
|
|
|
2484 if (!NILP (handler))
|
|
|
2485 return call2 (handler, Qfile_accessible_directory_p,
|
|
|
2486 filename);
|
|
|
2487
|
|
211
|
2488 #if !defined(DOS_NT)
|
|
0
|
2489 if (NILP (Ffile_directory_p (filename)))
|
|
|
2490 return (Qnil);
|
|
116
|
2491 else
|
|
|
2492 return Ffile_executable_p (filename);
|
|
211
|
2493 #else
|
|
|
2494 {
|
|
|
2495 int tem;
|
|
|
2496 struct gcpro gcpro1;
|
|
|
2497 /* It's an unlikely combination, but yes we really do need to gcpro:
|
|
|
2498 Suppose that file-accessible-directory-p has no handler, but
|
|
|
2499 file-directory-p does have a handler; this handler causes a GC which
|
|
|
2500 relocates the string in `filename'; and finally file-directory-p
|
|
|
2501 returns non-nil. Then we would end up passing a garbaged string
|
|
|
2502 to file-executable-p. */
|
|
|
2503 GCPRO1 (filename);
|
|
|
2504 tem = (NILP (Ffile_directory_p (filename))
|
|
|
2505 || NILP (Ffile_executable_p (filename)));
|
|
|
2506 UNGCPRO;
|
|
|
2507 return tem ? Qnil : Qt;
|
|
|
2508 }
|
|
|
2509 #endif /* !defined(DOS_NT) */
|
|
0
|
2510 }
|
|
|
2511
|
|
20
|
2512 DEFUN ("file-regular-p", Ffile_regular_p, 1, 1, 0, /*
|
|
0
|
2513 "Return t if file FILENAME is the name of a regular file.
|
|
|
2514 This is the sort of file that holds an ordinary stream of data bytes.
|
|
20
|
2515 */
|
|
|
2516 (filename))
|
|
0
|
2517 {
|
|
124
|
2518 /* This function can GC. GC checked 1997.04.10. */
|
|
114
|
2519 Lisp_Object abspath;
|
|
0
|
2520 struct stat st;
|
|
|
2521 Lisp_Object handler;
|
|
114
|
2522 struct gcpro gcpro1;
|
|
|
2523
|
|
|
2524 GCPRO1 (current_buffer->directory);
|
|
0
|
2525 abspath = expand_and_dir_to_file (filename, current_buffer->directory);
|
|
114
|
2526 UNGCPRO;
|
|
0
|
2527
|
|
|
2528 /* If the file name has special constructs in it,
|
|
|
2529 call the corresponding file handler. */
|
|
114
|
2530 GCPRO1 (abspath);
|
|
0
|
2531 handler = Ffind_file_name_handler (abspath, Qfile_regular_p);
|
|
114
|
2532 UNGCPRO;
|
|
0
|
2533 if (!NILP (handler))
|
|
|
2534 return call2 (handler, Qfile_regular_p, abspath);
|
|
|
2535
|
|
16
|
2536 if (stat ((char *) XSTRING_DATA (abspath), &st) < 0)
|
|
0
|
2537 return Qnil;
|
|
|
2538 return (st.st_mode & S_IFMT) == S_IFREG ? Qt : Qnil;
|
|
|
2539 }
|
|
|
2540
|
|
20
|
2541 DEFUN ("file-modes", Ffile_modes, 1, 1, 0, /*
|
|
0
|
2542 Return mode bits of FILE, as an integer.
|
|
20
|
2543 */
|
|
|
2544 (filename))
|
|
0
|
2545 {
|
|
124
|
2546 /* This function can GC. GC checked 1997.04.10. */
|
|
0
|
2547 Lisp_Object abspath;
|
|
|
2548 struct stat st;
|
|
|
2549 Lisp_Object handler;
|
|
|
2550 struct gcpro gcpro1;
|
|
151
|
2551
|
|
114
|
2552 GCPRO1 (current_buffer->directory);
|
|
0
|
2553 abspath = expand_and_dir_to_file (filename,
|
|
|
2554 current_buffer->directory);
|
|
|
2555 UNGCPRO;
|
|
|
2556
|
|
|
2557 /* If the file name has special constructs in it,
|
|
|
2558 call the corresponding file handler. */
|
|
|
2559 GCPRO1 (abspath);
|
|
|
2560 handler = Ffind_file_name_handler (abspath, Qfile_modes);
|
|
|
2561 UNGCPRO;
|
|
|
2562 if (!NILP (handler))
|
|
|
2563 return call2 (handler, Qfile_modes, abspath);
|
|
|
2564
|
|
16
|
2565 if (stat ((char *) XSTRING_DATA (abspath), &st) < 0)
|
|
0
|
2566 return Qnil;
|
|
211
|
2567 /* Syncing with FSF 19.34.6 note: not in FSF, #if 0'ed out here. */
|
|
|
2568 #if 0
|
|
0
|
2569 #ifdef DOS_NT
|
|
100
|
2570 if (check_executable (XSTRING (abspath)->_data))
|
|
0
|
2571 st.st_mode |= S_IEXEC;
|
|
|
2572 #endif /* DOS_NT */
|
|
211
|
2573 #endif /* 0 */
|
|
0
|
2574
|
|
|
2575 return make_int (st.st_mode & 07777);
|
|
|
2576 }
|
|
|
2577
|
|
20
|
2578 DEFUN ("set-file-modes", Fset_file_modes, 2, 2, 0, /*
|
|
0
|
2579 Set mode bits of FILE to MODE (an integer).
|
|
|
2580 Only the 12 low bits of MODE are used.
|
|
20
|
2581 */
|
|
|
2582 (filename, mode))
|
|
0
|
2583 {
|
|
124
|
2584 /* This function can GC. GC checked 1997.04.10. */
|
|
0
|
2585 Lisp_Object abspath;
|
|
|
2586 Lisp_Object handler;
|
|
114
|
2587 struct gcpro gcpro1;
|
|
151
|
2588
|
|
114
|
2589 GCPRO1 (current_buffer->directory);
|
|
0
|
2590 abspath = Fexpand_file_name (filename, current_buffer->directory);
|
|
116
|
2591 UNGCPRO;
|
|
|
2592
|
|
70
|
2593 CHECK_INT (mode);
|
|
44
|
2594
|
|
0
|
2595 /* If the file name has special constructs in it,
|
|
|
2596 call the corresponding file handler. */
|
|
|
2597 GCPRO1 (abspath);
|
|
|
2598 handler = Ffind_file_name_handler (abspath, Qset_file_modes);
|
|
|
2599 UNGCPRO;
|
|
|
2600 if (!NILP (handler))
|
|
|
2601 return call3 (handler, Qset_file_modes, abspath, mode);
|
|
|
2602
|
|
16
|
2603 if (chmod ((char *) XSTRING_DATA (abspath), XINT (mode)) < 0)
|
|
227
|
2604 report_file_error ("Doing chmod", list1 (abspath));
|
|
0
|
2605
|
|
|
2606 return Qnil;
|
|
|
2607 }
|
|
|
2608
|
|
20
|
2609 DEFUN ("set-default-file-modes", Fset_default_file_modes, 1, 1, 0, /*
|
|
0
|
2610 Set the file permission bits for newly created files.
|
|
|
2611 MASK should be an integer; if a permission's bit in MASK is 1,
|
|
|
2612 subsequently created files will not have that permission enabled.
|
|
|
2613 Only the low 9 bits are used.
|
|
|
2614 This setting is inherited by subprocesses.
|
|
20
|
2615 */
|
|
|
2616 (mode))
|
|
0
|
2617 {
|
|
|
2618 CHECK_INT (mode);
|
|
151
|
2619
|
|
0
|
2620 umask ((~ XINT (mode)) & 0777);
|
|
|
2621
|
|
|
2622 return Qnil;
|
|
|
2623 }
|
|
|
2624
|
|
20
|
2625 DEFUN ("default-file-modes", Fdefault_file_modes, 0, 0, 0, /*
|
|
0
|
2626 Return the default file protection for created files.
|
|
|
2627 The umask value determines which permissions are enabled in newly
|
|
|
2628 created files. If a permission's bit in the umask is 1, subsequently
|
|
|
2629 created files will not have that permission enabled.
|
|
20
|
2630 */
|
|
|
2631 ())
|
|
0
|
2632 {
|
|
|
2633 int mode;
|
|
|
2634
|
|
|
2635 mode = umask (0);
|
|
|
2636 umask (mode);
|
|
|
2637
|
|
|
2638 return make_int ((~ mode) & 0777);
|
|
|
2639 }
|
|
|
2640
|
|
20
|
2641 DEFUN ("unix-sync", Funix_sync, 0, 0, "", /*
|
|
0
|
2642 Tell Unix to finish all pending disk updates.
|
|
20
|
2643 */
|
|
|
2644 ())
|
|
0
|
2645 {
|
|
100
|
2646 #ifndef WINDOWSNT
|
|
0
|
2647 sync ();
|
|
100
|
2648 #endif
|
|
0
|
2649 return Qnil;
|
|
|
2650 }
|
|
|
2651
|
|
|
2652
|
|
20
|
2653 DEFUN ("file-newer-than-file-p", Ffile_newer_than_file_p, 2, 2, 0, /*
|
|
0
|
2654 Return t if file FILE1 is newer than file FILE2.
|
|
|
2655 If FILE1 does not exist, the answer is nil;
|
|
|
2656 otherwise, if FILE2 does not exist, the answer is t.
|
|
20
|
2657 */
|
|
|
2658 (file1, file2))
|
|
0
|
2659 {
|
|
124
|
2660 /* This function can GC. GC checked 1997.04.10. */
|
|
0
|
2661 Lisp_Object abspath1, abspath2;
|
|
|
2662 struct stat st;
|
|
|
2663 int mtime1;
|
|
|
2664 Lisp_Object handler;
|
|
114
|
2665 struct gcpro gcpro1, gcpro2, gcpro3;
|
|
0
|
2666
|
|
|
2667 CHECK_STRING (file1);
|
|
|
2668 CHECK_STRING (file2);
|
|
|
2669
|
|
|
2670 abspath1 = Qnil;
|
|
114
|
2671 abspath2 = Qnil;
|
|
|
2672
|
|
|
2673 GCPRO3 (abspath1, abspath2, current_buffer->directory);
|
|
|
2674 abspath1 = expand_and_dir_to_file (file1, current_buffer->directory);
|
|
|
2675 abspath2 = expand_and_dir_to_file (file2, current_buffer->directory);
|
|
0
|
2676
|
|
|
2677 /* If the file name has special constructs in it,
|
|
|
2678 call the corresponding file handler. */
|
|
|
2679 handler = Ffind_file_name_handler (abspath1, Qfile_newer_than_file_p);
|
|
|
2680 if (NILP (handler))
|
|
|
2681 handler = Ffind_file_name_handler (abspath2, Qfile_newer_than_file_p);
|
|
|
2682 UNGCPRO;
|
|
|
2683 if (!NILP (handler))
|
|
|
2684 return call3 (handler, Qfile_newer_than_file_p, abspath1,
|
|
|
2685 abspath2);
|
|
|
2686
|
|
16
|
2687 if (stat ((char *) XSTRING_DATA (abspath1), &st) < 0)
|
|
0
|
2688 return Qnil;
|
|
|
2689
|
|
|
2690 mtime1 = st.st_mtime;
|
|
|
2691
|
|
16
|
2692 if (stat ((char *) XSTRING_DATA (abspath2), &st) < 0)
|
|
0
|
2693 return Qt;
|
|
|
2694
|
|
|
2695 return (mtime1 > st.st_mtime) ? Qt : Qnil;
|
|
|
2696 }
|
|
|
2697
|
|
|
2698
|
|
|
2699 #ifdef DOS_NT
|
|
|
2700 Lisp_Object Qfind_buffer_file_type;
|
|
211
|
2701
|
|
|
2702 /* Return 1 if buffer is text, 0 if binary. */
|
|
|
2703 static int
|
|
|
2704 decide_buffer_type (unsigned char * buffer, int nbytes)
|
|
|
2705 {
|
|
|
2706 /* Buffer is binary if we find any LF chars not preceeded by CR or if
|
|
|
2707 the buffer doesn't contain at least 1 line. */
|
|
|
2708 unsigned lines = 0;
|
|
|
2709 unsigned char *p, *q;
|
|
|
2710
|
|
|
2711 for (p = buffer; nbytes > 0 && (q = memchr (p, '\n', nbytes)) != NULL;
|
|
|
2712 p = q + 1 )
|
|
|
2713 {
|
|
|
2714 nbytes -= (q + 1 - p);
|
|
|
2715 lines++;
|
|
|
2716 if (q > buffer && q[-1] != '\r')
|
|
|
2717 return 0;
|
|
|
2718 }
|
|
|
2719
|
|
|
2720 /* If we haven't seen any line endings yet, return -1 (meaning type is
|
|
|
2721 undecided) so we can examine the next bufferful as well. */
|
|
|
2722 return (lines > 0) ? 1 : -1;
|
|
|
2723 }
|
|
|
2724
|
|
|
2725 /* XEmacs addition: like decide_buffer_type(), but working on a XEmacs buffer:
|
|
|
2726 first arg is a byte index position instead of a char pointer;
|
|
|
2727 we check each char sequentially. --marcpa */
|
|
|
2728 static int
|
|
|
2729 buf_decide_buffer_type (struct buffer *buf, Bytind start, int nbytes)
|
|
|
2730 {
|
|
|
2731 /* Buffer is binary if we find any LF chars not preceeded by CR or if
|
|
|
2732 the buffer doesn't contain at least 1 line. */
|
|
|
2733 unsigned lines = 0;
|
|
|
2734 Bytind cur = start;
|
|
|
2735
|
|
|
2736 while (nbytes)
|
|
|
2737 {
|
|
|
2738 if (BI_BUF_FETCH_CHAR(buf, cur) == '\n')
|
|
|
2739 {
|
|
|
2740 lines++;
|
|
|
2741 if (cur != start && BI_BUF_FETCH_CHAR(buf, cur - 1) != '\r')
|
|
|
2742 return 0;
|
|
|
2743 }
|
|
|
2744 nbytes--;
|
|
|
2745 }
|
|
|
2746
|
|
|
2747 /* If we haven't seen any line endings yet, return -1 (meaning type is
|
|
|
2748 undecided) so we can examine the next bufferful as well. */
|
|
|
2749 return (lines > 0) ? 1 : -1;
|
|
|
2750 }
|
|
0
|
2751 #endif /* DOS_NT */
|
|
|
2752
|
|
2
|
2753 /* Stack sizes > 2**16 is a good way to elicit compiler bugs */
|
|
|
2754 /* #define READ_BUF_SIZE (2 << 16) */
|
|
|
2755 #define READ_BUF_SIZE (1 << 15)
|
|
0
|
2756
|
|
20
|
2757 DEFUN ("insert-file-contents-internal",
|
|
70
|
2758 Finsert_file_contents_internal, 1, 7, 0, /*
|
|
|
2759 Insert contents of file FILENAME after point; no coding-system frobbing.
|
|
|
2760 This function is identical to `insert-file-contents' except for the
|
|
|
2761 handling of the CODESYS and USED-CODESYS arguments under
|
|
|
2762 XEmacs/Mule. (When Mule support is not present, both functions are
|
|
|
2763 identical and ignore the CODESYS and USED-CODESYS arguments.)
|
|
|
2764
|
|
|
2765 If support for Mule exists in this Emacs, the file is decoded according
|
|
|
2766 to CODESYS; if omitted, no conversion happens. If USED-CODESYS is non-nil,
|
|
|
2767 it should be a symbol, and the actual coding system that was used for the
|
|
|
2768 decoding is stored into it. It will in general be different from CODESYS
|
|
|
2769 if CODESYS specifies automatic encoding detection or end-of-line detection.
|
|
|
2770
|
|
|
2771 Currently BEG and END refer to byte positions (as opposed to character
|
|
|
2772 positions), even in Mule. (Fixing this is very difficult.)
|
|
20
|
2773 */
|
|
70
|
2774 (filename, visit, beg, end, replace, codesys, used_codesys))
|
|
0
|
2775 {
|
|
116
|
2776 /* This function can call lisp */
|
|
|
2777 /* #### dmoore - this function hasn't been checked for gc recently */
|
|
0
|
2778 struct stat st;
|
|
|
2779 int fd;
|
|
|
2780 int saverrno = 0;
|
|
|
2781 Charcount inserted = 0;
|
|
|
2782 int speccount;
|
|
114
|
2783 struct gcpro gcpro1, gcpro2, gcpro3, gcpro4, gcpro5;
|
|
0
|
2784 Lisp_Object handler = Qnil, val;
|
|
|
2785 int total;
|
|
|
2786 Bufbyte read_buf[READ_BUF_SIZE];
|
|
|
2787 int mc_count;
|
|
|
2788 struct buffer *buf = current_buffer;
|
|
114
|
2789 Lisp_Object curbuf;
|
|
0
|
2790 int not_regular = 0;
|
|
211
|
2791 #ifdef DOS_NT
|
|
|
2792 int crlf_conversion_required = 0;
|
|
|
2793 unsigned crlf_count = 0;
|
|
|
2794 unsigned lf_count = 0;
|
|
|
2795 #endif
|
|
0
|
2796
|
|
|
2797 if (buf->base_buffer && ! NILP (visit))
|
|
|
2798 error ("Cannot do file visiting in an indirect buffer");
|
|
|
2799
|
|
|
2800 /* No need to call Fbarf_if_buffer_read_only() here.
|
|
|
2801 That's called in begin_multiple_change() or wherever. */
|
|
|
2802
|
|
|
2803 val = Qnil;
|
|
|
2804
|
|
114
|
2805 /* #### dmoore - should probably check in various places to see if
|
|
|
2806 curbuf was killed and if so signal an error? */
|
|
|
2807
|
|
|
2808 XSETBUFFER (curbuf, buf);
|
|
|
2809
|
|
|
2810 GCPRO5 (filename, val, visit, handler, curbuf);
|
|
151
|
2811
|
|
0
|
2812 mc_count = (NILP (replace)) ?
|
|
|
2813 begin_multiple_change (buf, BUF_PT (buf), BUF_PT (buf)) :
|
|
|
2814 begin_multiple_change (buf, BUF_BEG (buf), BUF_Z (buf));
|
|
|
2815
|
|
|
2816 speccount = specpdl_depth (); /* begin_multiple_change also adds
|
|
|
2817 an unwind_protect */
|
|
|
2818
|
|
|
2819 filename = Fexpand_file_name (filename, Qnil);
|
|
|
2820
|
|
|
2821 /* If the file name has special constructs in it,
|
|
|
2822 call the corresponding file handler. */
|
|
|
2823 handler = Ffind_file_name_handler (filename, Qinsert_file_contents);
|
|
|
2824 if (!NILP (handler))
|
|
|
2825 {
|
|
74
|
2826 val = call6 (handler, Qinsert_file_contents, filename,
|
|
|
2827 visit, beg, end, replace);
|
|
0
|
2828 goto handled;
|
|
|
2829 }
|
|
|
2830
|
|
70
|
2831 #ifdef MULE
|
|
|
2832 if (!NILP (used_codesys))
|
|
|
2833 CHECK_SYMBOL (used_codesys);
|
|
|
2834 #endif
|
|
|
2835
|
|
0
|
2836 if ( (!NILP (beg) || !NILP (end)) && !NILP (visit) )
|
|
|
2837 error ("Attempt to visit less than an entire file");
|
|
151
|
2838
|
|
0
|
2839 fd = -1;
|
|
|
2840
|
|
225
|
2841 if (
|
|
0
|
2842 #ifndef APOLLO
|
|
225
|
2843 (stat ((char *) XSTRING_DATA (filename), &st) < 0)
|
|
0
|
2844 #else /* APOLLO */
|
|
225
|
2845 /* Don't even bother with interruptible_open. APOLLO sucks. */
|
|
|
2846 ((fd = open ((char *) XSTRING_DATA (filename), O_RDONLY, 0)) < 0
|
|
|
2847 || fstat (fd, &st) < 0)
|
|
0
|
2848 #endif /* APOLLO */
|
|
225
|
2849 )
|
|
0
|
2850 {
|
|
|
2851 if (fd >= 0) close (fd);
|
|
|
2852 badopen:
|
|
|
2853 if (NILP (visit))
|
|
227
|
2854 report_file_error ("Opening input file", list1 (filename));
|
|
0
|
2855 st.st_mtime = -1;
|
|
|
2856 goto notfound;
|
|
|
2857 }
|
|
|
2858
|
|
|
2859 #ifdef S_IFREG
|
|
209
|
2860 /* Signal an error if we are accessing a non-regular file, with
|
|
|
2861 REPLACE, BEG or END being non-nil. */
|
|
0
|
2862 if (!S_ISREG (st.st_mode))
|
|
|
2863 {
|
|
173
|
2864 not_regular = 1;
|
|
|
2865
|
|
|
2866 if (!NILP (visit))
|
|
|
2867 goto notfound;
|
|
|
2868
|
|
|
2869 if (!NILP (replace) || !NILP (beg) || !NILP (end))
|
|
0
|
2870 {
|
|
|
2871 end_multiple_change (buf, mc_count);
|
|
|
2872
|
|
|
2873 return Fsignal (Qfile_error,
|
|
|
2874 list2 (build_translated_string("not a regular file"),
|
|
|
2875 filename));
|
|
|
2876 }
|
|
|
2877 }
|
|
183
|
2878 #endif /* S_IFREG */
|
|
0
|
2879
|
|
173
|
2880 if (!NILP (beg))
|
|
|
2881 CHECK_INT (beg);
|
|
|
2882 else
|
|
|
2883 beg = Qzero;
|
|
|
2884
|
|
|
2885 if (!NILP (end))
|
|
|
2886 CHECK_INT (end);
|
|
|
2887
|
|
0
|
2888 if (fd < 0)
|
|
225
|
2889 {
|
|
|
2890 if ((fd = interruptible_open ((char *) XSTRING_DATA (filename),
|
|
|
2891 O_RDONLY, 0)) < 0)
|
|
|
2892 goto badopen;
|
|
|
2893 }
|
|
0
|
2894
|
|
|
2895 /* Replacement should preserve point as it preserves markers. */
|
|
|
2896 if (!NILP (replace))
|
|
|
2897 record_unwind_protect (restore_point_unwind, Fpoint_marker (Qnil, Qnil));
|
|
|
2898
|
|
|
2899 record_unwind_protect (close_file_unwind, make_int (fd));
|
|
|
2900
|
|
|
2901 /* Supposedly happens on VMS. */
|
|
|
2902 if (st.st_size < 0)
|
|
|
2903 error ("File size is negative");
|
|
|
2904
|
|
|
2905 if (NILP (end))
|
|
|
2906 {
|
|
173
|
2907 if (!not_regular)
|
|
|
2908 {
|
|
|
2909 end = make_int (st.st_size);
|
|
|
2910 if (XINT (end) != st.st_size)
|
|
|
2911 error ("Maximum buffer size exceeded");
|
|
|
2912 }
|
|
211
|
2913
|
|
|
2914 #ifdef DOS_NT
|
|
|
2915 /* Permit old behaviour if desired. */
|
|
|
2916 if (NILP (Vinsert_file_contents_allow_replace) && !NILP (replace))
|
|
|
2917 {
|
|
|
2918 replace = Qnil;
|
|
|
2919 /* Surely this was never right! */
|
|
|
2920 /* XSETFASTINT (beg, 0);
|
|
|
2921 XSETFASTINT (end, st.st_size); */
|
|
|
2922 buffer_delete_range (buf, BUF_BEGV(buf), BUF_ZV(buf),
|
|
|
2923 !NILP (visit) ? INSDEL_NO_LOCKING : 0);
|
|
|
2924 }
|
|
|
2925 #endif /* DOS_NT */
|
|
0
|
2926 }
|
|
|
2927
|
|
|
2928 /* If requested, replace the accessible part of the buffer
|
|
|
2929 with the file contents. Avoid replacing text at the
|
|
|
2930 beginning or end of the buffer that matches the file contents;
|
|
|
2931 that preserves markers pointing to the unchanged parts. */
|
|
211
|
2932 #if !defined (MULE)
|
|
0
|
2933 /* The replace-mode code currently only works when the assumption
|
|
211
|
2934 'one byte == one char' holds true. This fails Mule because
|
|
|
2935 files may contain multibyte characters. It holds under Windows NT
|
|
|
2936 provided we convert CRLF into LF. */
|
|
0
|
2937 # define FSFMACS_SPEEDY_INSERT
|
|
|
2938 #endif
|
|
|
2939 #ifndef FSFMACS_SPEEDY_INSERT
|
|
|
2940 if (!NILP (replace))
|
|
|
2941 {
|
|
|
2942 buffer_delete_range (buf, BUF_BEG (buf), BUF_Z (buf),
|
|
|
2943 !NILP (visit) ? INSDEL_NO_LOCKING : 0);
|
|
|
2944 }
|
|
|
2945 #else /* FSFMACS_SPEEDY_INSERT */
|
|
|
2946 if (!NILP (replace))
|
|
|
2947 {
|
|
|
2948 char buffer[1 << 14];
|
|
|
2949 Bufpos same_at_start = BUF_BEGV (buf);
|
|
|
2950 Bufpos same_at_end = BUF_ZV (buf);
|
|
|
2951 int overlap;
|
|
211
|
2952 #ifdef DOS_NT
|
|
|
2953 /* Syncing with 19.34.6 note: same_at_start_in_file and
|
|
|
2954 same_at_end_in_file are not in XEmacs 20.4.
|
|
|
2955 First try to introduce them as-is and see what happens.
|
|
|
2956 Might be necessary to use constructs like
|
|
|
2957 st.st_size - (BUF_ZV (buf) - same_at_end)
|
|
|
2958 instead.
|
|
|
2959 --marcpa
|
|
|
2960 */
|
|
|
2961 /* Offset into the file where discrepancy begins. */
|
|
|
2962 int same_at_start_in_file = 0;
|
|
|
2963 /* Offset into the file where discrepancy ends. */
|
|
|
2964 int same_at_end_in_file = st.st_size;
|
|
|
2965 /* DOS_NT only: is there a `\r' character left in the buffer? */
|
|
|
2966 int cr_left_in_buffer = 0;
|
|
|
2967 /* DOS_NT only: was `\n' the first character in previous bufferful? */
|
|
|
2968 int last_was_lf = 0;
|
|
|
2969
|
|
|
2970 /* Demacs 1.1.1 91/10/16 HIRANO Satoshi, MW July 1993 */
|
|
|
2971 /* Determine file type (text/binary) from its name.
|
|
|
2972 Note that the buffer_file_type changes here when the file
|
|
|
2973 being inserted is not of the same type as the original buffer. */
|
|
|
2974 current_buffer->buffer_file_type = call1 (Qfind_buffer_file_type, filename);
|
|
|
2975 if (NILP (current_buffer->buffer_file_type))
|
|
|
2976 crlf_conversion_required = 1;
|
|
|
2977 else if (current_buffer->buffer_file_type != Qt)
|
|
|
2978 /* Use heuristic to decide whether file is text or binary (based
|
|
|
2979 on the first bufferful) if buffer-file-type is not nil or t.
|
|
|
2980 If no decision is made (because no line endings were ever
|
|
|
2981 seen) then let buffer-file-type default to nil. */
|
|
|
2982 crlf_conversion_required = -1;
|
|
|
2983 #endif /* DOS_NT */
|
|
0
|
2984
|
|
|
2985 /* Count how many chars at the start of the file
|
|
|
2986 match the text at the beginning of the buffer. */
|
|
|
2987 while (1)
|
|
|
2988 {
|
|
|
2989 int nread;
|
|
|
2990 Bufpos bufpos;
|
|
211
|
2991 #ifdef DOS_NT
|
|
|
2992 if (cr_left_in_buffer)
|
|
|
2993 {
|
|
|
2994 nread = read_allowing_quit (fd, buffer + 1, sizeof(buffer) - 1);
|
|
|
2995 cr_left_in_buffer = 0;
|
|
|
2996 if (nread >= 0)
|
|
|
2997 nread++;
|
|
|
2998 }
|
|
|
2999 else
|
|
|
3000 #endif /* DOS_NT */
|
|
0
|
3001 nread = read_allowing_quit (fd, buffer, sizeof buffer);
|
|
|
3002 if (nread < 0)
|
|
|
3003 error ("IO error reading %s: %s",
|
|
16
|
3004 XSTRING_DATA (filename), strerror (errno));
|
|
0
|
3005 else if (nread == 0)
|
|
|
3006 break;
|
|
|
3007 bufpos = 0;
|
|
211
|
3008 #ifdef DOS_NT
|
|
|
3009 /* If requested, we do a simple check on the first bufferful
|
|
|
3010 to decide whether the file is binary or text. (If text, we
|
|
|
3011 count LF and CRLF occurences to determine whether the file
|
|
|
3012 was in Unix or DOS format.) */
|
|
|
3013 if (crlf_conversion_required < 0)
|
|
|
3014 {
|
|
|
3015 crlf_conversion_required = decide_buffer_type (buffer, nread);
|
|
|
3016 current_buffer->buffer_file_type =
|
|
|
3017 crlf_conversion_required ? Qnil : Qt;
|
|
|
3018 }
|
|
|
3019
|
|
|
3020 /* DOS_NT text files require that we ignore a `\r' before a `\n'. */
|
|
|
3021 if (crlf_conversion_required > 0)
|
|
|
3022 while (bufpos < nread && same_at_start < BUF_ZV (buf))
|
|
|
3023 {
|
|
|
3024 int filec = buffer[bufpos];
|
|
|
3025 int bufc = BUF_FETCH_CHAR (buf, same_at_start);
|
|
|
3026
|
|
|
3027 if (filec == '\n')
|
|
|
3028 lf_count++;
|
|
|
3029
|
|
|
3030 if (filec == bufc)
|
|
|
3031 same_at_start++, bufpos++, same_at_start_in_file++;
|
|
|
3032 else if (filec == '\r' && bufc == '\n')
|
|
|
3033 {
|
|
|
3034 /* If the `\r' is the last character in this buffer,
|
|
|
3035 it will be examined with the next bufferful. */
|
|
|
3036 if (bufpos == nread)
|
|
|
3037 {
|
|
|
3038 buffer[0] = filec;
|
|
|
3039 cr_left_in_buffer = 1;
|
|
|
3040 }
|
|
|
3041 else if (buffer[bufpos + 1] == bufc)
|
|
|
3042 {
|
|
|
3043 bufpos += 2;
|
|
|
3044 same_at_start_in_file += 2;
|
|
|
3045 same_at_start++;
|
|
|
3046 crlf_count++;
|
|
|
3047 lf_count++;
|
|
|
3048 }
|
|
|
3049 else
|
|
|
3050 break;
|
|
|
3051 }
|
|
|
3052 else
|
|
|
3053 break;
|
|
|
3054 }
|
|
|
3055 else
|
|
|
3056 #endif /* DOS_NT */
|
|
0
|
3057 while (bufpos < nread && same_at_start < BUF_ZV (buf)
|
|
|
3058 && BUF_FETCH_CHAR (buf, same_at_start) == buffer[bufpos])
|
|
211
|
3059 #ifdef DOS_NT
|
|
|
3060 same_at_start_in_file++,
|
|
|
3061 #endif
|
|
0
|
3062 same_at_start++, bufpos++;
|
|
|
3063 /* If we found a discrepancy, stop the scan.
|
|
211
|
3064 Otherwise loop around and scan the next bufferful. */
|
|
0
|
3065 if (bufpos != nread)
|
|
|
3066 break;
|
|
|
3067 }
|
|
|
3068 /* If the file matches the buffer completely,
|
|
|
3069 there's no need to replace anything. */
|
|
211
|
3070 #ifdef DOS_NT
|
|
|
3071 if (same_at_start_in_file == st.st_size)
|
|
|
3072 #else
|
|
0
|
3073 if (same_at_start - BUF_BEGV (buf) == st.st_size)
|
|
211
|
3074 #endif /* DOS_NT */
|
|
0
|
3075 {
|
|
|
3076 close (fd);
|
|
|
3077 unbind_to (speccount, Qnil);
|
|
|
3078 /* Truncate the buffer to the size of the file. */
|
|
|
3079 buffer_delete_range (buf, same_at_start, same_at_end,
|
|
|
3080 !NILP (visit) ? INSDEL_NO_LOCKING : 0);
|
|
|
3081 goto handled;
|
|
|
3082 }
|
|
|
3083 /* Count how many chars at the end of the file
|
|
|
3084 match the text at the end of the buffer. */
|
|
|
3085 while (1)
|
|
|
3086 {
|
|
|
3087 int total_read, nread;
|
|
|
3088 Bufpos bufpos, curpos, trial;
|
|
|
3089
|
|
|
3090 /* At what file position are we now scanning? */
|
|
211
|
3091 #ifdef DOS_NT
|
|
|
3092 curpos = same_at_end_in_file;
|
|
|
3093 #else
|
|
0
|
3094 curpos = st.st_size - (BUF_ZV (buf) - same_at_end);
|
|
211
|
3095 #endif /* DOS_NT */
|
|
0
|
3096 /* If the entire file matches the buffer tail, stop the scan. */
|
|
|
3097 if (curpos == 0)
|
|
|
3098 break;
|
|
|
3099 /* How much can we scan in the next step? */
|
|
|
3100 trial = min (curpos, sizeof buffer);
|
|
|
3101 if (lseek (fd, curpos - trial, 0) < 0)
|
|
227
|
3102 report_file_error ("Setting file position", list1 (filename));
|
|
0
|
3103
|
|
|
3104 total_read = 0;
|
|
|
3105 while (total_read < trial)
|
|
|
3106 {
|
|
|
3107 nread = read_allowing_quit (fd, buffer + total_read,
|
|
|
3108 trial - total_read);
|
|
|
3109 if (nread <= 0)
|
|
227
|
3110 report_file_error ("IO error reading file", list1 (filename));
|
|
0
|
3111 total_read += nread;
|
|
|
3112 }
|
|
211
|
3113 /* Scan this bufferful from the end, comparing with
|
|
0
|
3114 the Emacs buffer. */
|
|
|
3115 bufpos = total_read;
|
|
211
|
3116 #ifdef DOS_NT
|
|
|
3117 /* DOS_NT text files require that we ignore a `\r' before a `\n'. */
|
|
|
3118 if (crlf_conversion_required)
|
|
|
3119 #endif /* DOS_NT */
|
|
0
|
3120 /* Compare with same_at_start to avoid counting some buffer text
|
|
|
3121 as matching both at the file's beginning and at the end. */
|
|
211
|
3122 #if !defined(DOS_NT)
|
|
0
|
3123 while (bufpos > 0 && same_at_end > same_at_start
|
|
|
3124 && BUF_FETCH_CHAR (buf, same_at_end - 1) ==
|
|
|
3125 buffer[bufpos - 1])
|
|
|
3126 same_at_end--, bufpos--;
|
|
211
|
3127 #else /* DOS_NT */
|
|
|
3128 while (bufpos > 0 && same_at_end > same_at_start
|
|
|
3129 && same_at_end_in_file > same_at_start_in_file)
|
|
|
3130 {
|
|
|
3131 int filec = buffer[bufpos - 1];
|
|
|
3132 int bufc = BUF_FETCH_CHAR (buf, same_at_end - 1);
|
|
|
3133
|
|
|
3134 /* Account for `\n' in previous bufferful. */
|
|
|
3135 if (last_was_lf && filec == '\r')
|
|
|
3136 {
|
|
|
3137 same_at_end_in_file--, bufpos--;
|
|
|
3138 last_was_lf = 0;
|
|
|
3139 crlf_count++;
|
|
|
3140 }
|
|
|
3141 else if (filec == bufc)
|
|
|
3142 {
|
|
|
3143 last_was_lf = 0;
|
|
|
3144 same_at_end--, same_at_end_in_file--, bufpos--;
|
|
|
3145 if (bufc == '\n')
|
|
|
3146 {
|
|
|
3147 lf_count++;
|
|
|
3148 if (bufpos <= 0)
|
|
|
3149 last_was_lf = 1;
|
|
|
3150 else if (same_at_end_in_file <= same_at_start_in_file)
|
|
|
3151 break;
|
|
|
3152 else if (buffer[bufpos - 1] == '\r')
|
|
|
3153 same_at_end_in_file--, bufpos--, crlf_count++;
|
|
|
3154 }
|
|
|
3155 }
|
|
|
3156 else
|
|
|
3157 {
|
|
|
3158 last_was_lf = 0;
|
|
|
3159 break;
|
|
|
3160 }
|
|
|
3161 }
|
|
|
3162 else
|
|
|
3163 while (bufpos > 0 && same_at_end > same_at_start
|
|
|
3164 && same_at_end_in_file > same_at_start_in_file
|
|
|
3165 && BUF_FETCH_CHAR (buf, same_at_end - 1) ==
|
|
|
3166 buffer[bufpos - 1])
|
|
|
3167 same_at_end--, same_at_end_in_file--, bufpos--;
|
|
|
3168 #endif /* !defined(DOS_NT) */
|
|
0
|
3169 /* If we found a discrepancy, stop the scan.
|
|
211
|
3170 Otherwise loop around and scan the preceding bufferful. */
|
|
0
|
3171 if (bufpos != 0)
|
|
|
3172 break;
|
|
|
3173 /* If display current starts at beginning of line,
|
|
|
3174 keep it that way. */
|
|
|
3175 if (XBUFFER (XWINDOW (Fselected_window (Qnil))->buffer) == buf)
|
|
|
3176 XWINDOW (Fselected_window (Qnil))->start_at_line_beg =
|
|
|
3177 !NILP (Fbolp (make_buffer (buf)));
|
|
|
3178 }
|
|
|
3179
|
|
|
3180 /* Don't try to reuse the same piece of text twice. */
|
|
|
3181 overlap = same_at_start - BUF_BEGV (buf) -
|
|
|
3182 (same_at_end + st.st_size - BUF_ZV (buf));
|
|
|
3183 if (overlap > 0)
|
|
|
3184 same_at_end += overlap;
|
|
|
3185
|
|
|
3186 /* Arrange to read only the nonmatching middle part of the file. */
|
|
211
|
3187 #ifdef DOS_NT
|
|
|
3188 beg = make_int (same_at_start_in_file);
|
|
|
3189 end = make_int (same_at_end_in_file);
|
|
|
3190 #else
|
|
0
|
3191 beg = make_int (same_at_start - BUF_BEGV (buf));
|
|
|
3192 end = make_int (st.st_size - (BUF_ZV (buf) - same_at_end));
|
|
211
|
3193 #endif /* DOS_NT */
|
|
0
|
3194
|
|
|
3195 buffer_delete_range (buf, same_at_start, same_at_end,
|
|
|
3196 !NILP (visit) ? INSDEL_NO_LOCKING : 0);
|
|
|
3197 /* Insert from the file at the proper position. */
|
|
|
3198 BUF_SET_PT (buf, same_at_start);
|
|
|
3199 }
|
|
|
3200 #endif /* FSFMACS_SPEEDY_INSERT */
|
|
|
3201
|
|
173
|
3202 if (!not_regular)
|
|
|
3203 {
|
|
|
3204 total = XINT (end) - XINT (beg);
|
|
|
3205
|
|
|
3206 /* Make sure point-max won't overflow after this insertion. */
|
|
227
|
3207 if (total != XINT (make_int (total)))
|
|
173
|
3208 error ("Maximum buffer size exceeded");
|
|
|
3209 }
|
|
|
3210 else
|
|
|
3211 /* For a special file, all we can do is guess. */
|
|
|
3212 total = READ_BUF_SIZE;
|
|
0
|
3213
|
|
|
3214 if (XINT (beg) != 0
|
|
|
3215 #ifdef FSFMACS_SPEEDY_INSERT
|
|
|
3216 /* why was this here? asked jwz. The reason is that the replace-mode
|
|
|
3217 connivings above will normally put the file pointer other than
|
|
|
3218 where it should be. */
|
|
|
3219 || !NILP (replace)
|
|
|
3220 #endif /* !FSFMACS_SPEEDY_INSERT */
|
|
|
3221 )
|
|
|
3222 {
|
|
|
3223 if (lseek (fd, XINT (beg), 0) < 0)
|
|
227
|
3224 report_file_error ("Setting file position", list1 (filename));
|
|
0
|
3225 }
|
|
|
3226
|
|
|
3227 {
|
|
|
3228 Bufpos cur_point = BUF_PT (buf);
|
|
|
3229 struct gcpro ngcpro1;
|
|
|
3230 Lisp_Object stream = make_filedesc_input_stream (fd, 0, total,
|
|
|
3231 LSTR_ALLOW_QUIT);
|
|
|
3232
|
|
|
3233 NGCPRO1 (stream);
|
|
|
3234 Lstream_set_buffering (XLSTREAM (stream), LSTREAM_BLOCKN_BUFFERED, 65536);
|
|
70
|
3235 #ifdef MULE
|
|
|
3236 stream = make_decoding_input_stream
|
|
|
3237 (XLSTREAM (stream), Fget_coding_system (codesys));
|
|
|
3238 Lstream_set_character_mode (XLSTREAM (stream));
|
|
|
3239 Lstream_set_buffering (XLSTREAM (stream), LSTREAM_BLOCKN_BUFFERED, 65536);
|
|
183
|
3240 #endif /* MULE */
|
|
0
|
3241
|
|
|
3242 record_unwind_protect (close_stream_unwind, stream);
|
|
|
3243
|
|
16
|
3244 /* No need to limit the amount of stuff we attempt to read. (It would
|
|
|
3245 be incorrect, anyway, when Mule is enabled.) Instead, the limiting
|
|
|
3246 occurs inside of the filedesc stream. */
|
|
0
|
3247 while (1)
|
|
|
3248 {
|
|
|
3249 Bytecount this_len;
|
|
|
3250 Charcount cc_inserted;
|
|
|
3251
|
|
|
3252 QUIT;
|
|
|
3253 this_len = Lstream_read (XLSTREAM (stream), read_buf,
|
|
|
3254 sizeof (read_buf));
|
|
151
|
3255
|
|
0
|
3256 if (this_len <= 0)
|
|
|
3257 {
|
|
|
3258 if (this_len < 0)
|
|
|
3259 saverrno = errno;
|
|
|
3260 break;
|
|
|
3261 }
|
|
211
|
3262 #ifdef DOS_NT
|
|
|
3263 /* XEmacs (--marcpa) change: FSF does buffer_insert_raw_string_1() first
|
|
|
3264 then checks if conversion is needed, calling lisp
|
|
|
3265 (find-buffer-file-type) which can call a user-function that
|
|
|
3266 might look at the unconverted buffer to decide if
|
|
|
3267 conversion is needed.
|
|
|
3268 I removed the possibility for lisp functions called from
|
|
|
3269 find-buffer-file-type to look at the buffer's content, for
|
|
|
3270 simplicity reasons: it is easier to do the CRLF -> LF
|
|
|
3271 conversion on read_buf than on buffer contents because
|
|
|
3272 BUF_FETCH_CHAR does not return a pointer to an unsigned
|
|
|
3273 char memory location, and because we must cope with bytind
|
|
|
3274 VS bufpos in XEmacs, thus complicating crlf_to_lf().
|
|
|
3275 This decision (of doing Lstream_read(), crlf_to_lf() then
|
|
|
3276 buffer_insert_raw_string_1()) is debatable.
|
|
|
3277 --marcpa
|
|
|
3278 */
|
|
|
3279 /* Following FSF note no longer apply now. See comment above.
|
|
|
3280 --marcpa*/
|
|
|
3281 /* For compatability with earlier versions that did not support the
|
|
|
3282 REPLACE funtionality, we call find-buffer-file-type after inserting
|
|
|
3283 the contents to allow it to inspect the inserted data. (This was
|
|
|
3284 not intentional usage, but proved to be quite useful.) */
|
|
|
3285 if (NILP (replace))
|
|
|
3286 {
|
|
|
3287 /* Demacs 1.1.1 91/10/16 HIRANO Satoshi, MW July 1993 */
|
|
|
3288 /* Determine file type (text/binary) from its name.
|
|
|
3289 Note that the buffer_file_type changes here when the file
|
|
|
3290 being inserted is not of the same type as the original buffer. */
|
|
|
3291 current_buffer->buffer_file_type = call1 (Qfind_buffer_file_type, filename);
|
|
|
3292 if (NILP (current_buffer->buffer_file_type))
|
|
|
3293 crlf_conversion_required = 1;
|
|
|
3294 else if (current_buffer->buffer_file_type != Qt)
|
|
|
3295 /* Use heuristic to decide whether file is text or binary (based
|
|
|
3296 on the first bufferful) if buffer-file-type is not nil or t.
|
|
|
3297 If no decision is made (because no line endings were ever
|
|
|
3298 seen) then let buffer-file-type default to nil. */
|
|
|
3299 crlf_conversion_required = -1;
|
|
|
3300 }
|
|
|
3301
|
|
|
3302 /* If requested, we check the inserted data to decide whether the file
|
|
|
3303 is binary or text. (If text, we count LF and CRLF occurences to
|
|
|
3304 determine whether the file was in Unix or DOS format.) */
|
|
|
3305 if (crlf_conversion_required < 0)
|
|
|
3306 {
|
|
|
3307 crlf_conversion_required =
|
|
|
3308 decide_buffer_type (read_buf, this_len);
|
|
|
3309 current_buffer->buffer_file_type =
|
|
|
3310 crlf_conversion_required ? Qnil : Qt;
|
|
|
3311 }
|
|
|
3312
|
|
|
3313 /* Demacs 1.1.1 91/10/16 HIRANO Satoshi, MW July 1993 */
|
|
|
3314 /* Remove CRs from CR-LFs if the file is deemed to be a text file. */
|
|
|
3315 if (crlf_conversion_required)
|
|
|
3316 {
|
|
|
3317 int reduced_size
|
|
|
3318 = this_len - crlf_to_lf (this_len, read_buf,
|
|
|
3319 &lf_count);
|
|
|
3320 crlf_count += reduced_size;
|
|
|
3321 /* XEmacs (--marcpa) change: No need for this since we havent
|
|
|
3322 inserted in buffer yet. */
|
|
|
3323 #if 0
|
|
|
3324 ZV -= reduced_size;
|
|
|
3325 Z -= reduced_size;
|
|
|
3326 GPT -= reduced_size;
|
|
|
3327 GAP_SIZE += reduced_size;
|
|
|
3328 inserted -= reduced_size;
|
|
|
3329 #endif
|
|
|
3330 this_len -= reduced_size;
|
|
|
3331
|
|
|
3332 /* Change buffer_file_type back to binary if Unix eol format. */
|
|
|
3333 if (crlf_count == 0 && lf_count > 0)
|
|
|
3334 current_buffer->buffer_file_type = Qt;
|
|
|
3335 }
|
|
|
3336
|
|
|
3337 /* Make crlf_count and lf_count available for inspection. */
|
|
|
3338 Fset (intern ("buffer-file-lines"), make_int (lf_count));
|
|
|
3339 Fset (intern ("buffer-file-dos-lines"), make_int (crlf_count));
|
|
|
3340 #endif /* DOS_NT */
|
|
0
|
3341
|
|
|
3342 cc_inserted = buffer_insert_raw_string_1 (buf, cur_point, read_buf,
|
|
|
3343 this_len,
|
|
|
3344 !NILP (visit)
|
|
|
3345 ? INSDEL_NO_LOCKING : 0);
|
|
|
3346 inserted += cc_inserted;
|
|
|
3347 cur_point += cc_inserted;
|
|
|
3348 }
|
|
70
|
3349 #ifdef MULE
|
|
|
3350 if (!NILP (used_codesys))
|
|
|
3351 {
|
|
|
3352 Fset (used_codesys,
|
|
|
3353 XCODING_SYSTEM_NAME (decoding_stream_coding_system (XLSTREAM (stream))));
|
|
|
3354 }
|
|
183
|
3355 #endif /* MULE */
|
|
0
|
3356 NUNGCPRO;
|
|
|
3357 }
|
|
|
3358
|
|
|
3359 /* Close the file/stream */
|
|
|
3360 unbind_to (speccount, Qnil);
|
|
|
3361
|
|
|
3362 if (saverrno != 0)
|
|
|
3363 {
|
|
|
3364 error ("IO error reading %s: %s",
|
|
16
|
3365 XSTRING_DATA (filename), strerror (saverrno));
|
|
0
|
3366 }
|
|
|
3367
|
|
|
3368 notfound:
|
|
|
3369 handled:
|
|
|
3370
|
|
|
3371 end_multiple_change (buf, mc_count);
|
|
|
3372
|
|
|
3373 if (!NILP (visit))
|
|
|
3374 {
|
|
|
3375 if (!EQ (buf->undo_list, Qt))
|
|
|
3376 buf->undo_list = Qnil;
|
|
|
3377 #ifdef APOLLO
|
|
16
|
3378 stat ((char *) XSTRING_DATA (filename), &st);
|
|
0
|
3379 #endif
|
|
|
3380 if (NILP (handler))
|
|
|
3381 {
|
|
|
3382 buf->modtime = st.st_mtime;
|
|
|
3383 buf->filename = filename;
|
|
|
3384 /* XEmacs addition: */
|
|
|
3385 /* This function used to be in C, ostensibly so that
|
|
|
3386 it could be called here. But that's just silly.
|
|
|
3387 There's no reason C code can't call out to Lisp
|
|
|
3388 code, and it's a lot cleaner this way. */
|
|
|
3389 if (!NILP (Ffboundp (Qcompute_buffer_file_truename)))
|
|
|
3390 call1 (Qcompute_buffer_file_truename, make_buffer (buf));
|
|
|
3391 }
|
|
|
3392 BUF_SAVE_MODIFF (buf) = BUF_MODIFF (buf);
|
|
|
3393 buf->auto_save_modified = BUF_MODIFF (buf);
|
|
|
3394 buf->save_length = make_int (BUF_SIZE (buf));
|
|
|
3395 #ifdef CLASH_DETECTION
|
|
|
3396 if (NILP (handler))
|
|
|
3397 {
|
|
|
3398 if (!NILP (buf->file_truename))
|
|
|
3399 unlock_file (buf->file_truename);
|
|
|
3400 unlock_file (filename);
|
|
|
3401 }
|
|
|
3402 #endif /* CLASH_DETECTION */
|
|
|
3403 if (not_regular)
|
|
|
3404 RETURN_UNGCPRO (Fsignal (Qfile_error,
|
|
|
3405 list2 (build_string ("not a regular file"),
|
|
|
3406 filename)));
|
|
|
3407
|
|
|
3408 /* If visiting nonexistent file, return nil. */
|
|
|
3409 if (buf->modtime == -1)
|
|
|
3410 report_file_error ("Opening input file",
|
|
|
3411 list1 (filename));
|
|
|
3412 }
|
|
|
3413
|
|
|
3414 /* Decode file format */
|
|
|
3415 if (inserted > 0)
|
|
|
3416 {
|
|
151
|
3417 Lisp_Object insval = call3 (Qformat_decode,
|
|
0
|
3418 Qnil, make_int (inserted), visit);
|
|
|
3419 CHECK_INT (insval);
|
|
|
3420 inserted = XINT (insval);
|
|
|
3421 }
|
|
|
3422
|
|
|
3423 if (inserted > 0)
|
|
|
3424 {
|
|
227
|
3425 Lisp_Object p;
|
|
0
|
3426 struct gcpro ngcpro1;
|
|
|
3427
|
|
|
3428 NGCPRO1 (p);
|
|
227
|
3429 EXTERNAL_LIST_LOOP (p, Vafter_insert_file_functions)
|
|
0
|
3430 {
|
|
|
3431 Lisp_Object insval =
|
|
227
|
3432 call1 (XCAR (p), make_int (inserted));
|
|
0
|
3433 if (!NILP (insval))
|
|
|
3434 {
|
|
|
3435 CHECK_NATNUM (insval);
|
|
|
3436 inserted = XINT (insval);
|
|
|
3437 }
|
|
|
3438 QUIT;
|
|
|
3439 }
|
|
|
3440 NUNGCPRO;
|
|
|
3441 }
|
|
|
3442
|
|
|
3443 UNGCPRO;
|
|
|
3444
|
|
|
3445 if (!NILP (val))
|
|
|
3446 return (val);
|
|
|
3447 else
|
|
|
3448 return (list2 (filename, make_int (inserted)));
|
|
|
3449 }
|
|
|
3450
|
|
|
3451
|
|
|
3452 static int a_write (Lisp_Object outstream, Lisp_Object instream, int pos,
|
|
|
3453 Lisp_Object *annot);
|
|
|
3454 static Lisp_Object build_annotations (Lisp_Object start, Lisp_Object end);
|
|
|
3455
|
|
|
3456 /* If build_annotations switched buffers, switch back to BUF.
|
|
|
3457 Kill the temporary buffer that was selected in the meantime. */
|
|
|
3458
|
|
151
|
3459 static Lisp_Object
|
|
0
|
3460 build_annotations_unwind (Lisp_Object buf)
|
|
|
3461 {
|
|
|
3462 Lisp_Object tembuf;
|
|
|
3463
|
|
|
3464 if (XBUFFER (buf) == current_buffer)
|
|
|
3465 return Qnil;
|
|
|
3466 tembuf = Fcurrent_buffer ();
|
|
|
3467 Fset_buffer (buf);
|
|
|
3468 Fkill_buffer (tembuf);
|
|
|
3469 return Qnil;
|
|
|
3470 }
|
|
|
3471
|
|
70
|
3472 DEFUN ("write-region-internal", Fwrite_region_internal, 3, 7,
|
|
20
|
3473 "r\nFWrite region to file: ", /*
|
|
70
|
3474 Write current region into specified file; no coding-system frobbing.
|
|
|
3475 This function is identical to `write-region' except for the handling
|
|
|
3476 of the CODESYS argument under XEmacs/Mule. (When Mule support is not
|
|
|
3477 present, both functions are identical and ignore the CODESYS argument.)
|
|
|
3478 If support for Mule exists in this Emacs, the file is encoded according
|
|
|
3479 to the value of CODESYS. If this is nil, no code conversion occurs.
|
|
20
|
3480 */
|
|
70
|
3481 (start, end, filename, append, visit, lockname, codesys))
|
|
0
|
3482 {
|
|
116
|
3483 /* This function can call lisp */
|
|
0
|
3484 int desc;
|
|
|
3485 int failure;
|
|
|
3486 int save_errno = 0;
|
|
|
3487 struct stat st;
|
|
|
3488 Lisp_Object fn;
|
|
|
3489 int speccount = specpdl_depth ();
|
|
|
3490 int visiting_other = STRINGP (visit);
|
|
|
3491 int visiting = (EQ (visit, Qt) || visiting_other);
|
|
|
3492 int quietly = (!visiting && !NILP (visit));
|
|
|
3493 Lisp_Object visit_file = Qnil;
|
|
|
3494 Lisp_Object annotations = Qnil;
|
|
|
3495 struct buffer *given_buffer;
|
|
|
3496 Bufpos start1, end1;
|
|
|
3497
|
|
114
|
3498 /* #### dmoore - if Fexpand_file_name or handlers kill the buffer,
|
|
|
3499 we should signal an error rather than blissfully continuing
|
|
|
3500 along. ARGH, this function is going to lose lose lose. We need
|
|
|
3501 to protect the current_buffer from being destroyed, but the
|
|
|
3502 multiple return points make this a pain in the butt. */
|
|
|
3503
|
|
0
|
3504 #ifdef DOS_NT
|
|
|
3505 int buffer_file_type
|
|
|
3506 = NILP (current_buffer->buffer_file_type) ? O_TEXT : O_BINARY;
|
|
|
3507 #endif /* DOS_NT */
|
|
|
3508
|
|
70
|
3509 #ifdef MULE
|
|
|
3510 codesys = Fget_coding_system (codesys);
|
|
|
3511 #endif /* MULE */
|
|
|
3512
|
|
0
|
3513 if (current_buffer->base_buffer && ! NILP (visit))
|
|
|
3514 error ("Cannot do file visiting in an indirect buffer");
|
|
|
3515
|
|
|
3516 if (!NILP (start) && !STRINGP (start))
|
|
|
3517 get_buffer_range_char (current_buffer, start, end, &start1, &end1, 0);
|
|
|
3518
|
|
|
3519 {
|
|
|
3520 Lisp_Object handler;
|
|
|
3521 struct gcpro gcpro1, gcpro2, gcpro3, gcpro4, gcpro5;
|
|
114
|
3522
|
|
0
|
3523 GCPRO5 (start, filename, visit, visit_file, lockname);
|
|
|
3524
|
|
|
3525 if (visiting_other)
|
|
|
3526 visit_file = Fexpand_file_name (visit, Qnil);
|
|
|
3527 else
|
|
|
3528 visit_file = filename;
|
|
|
3529 filename = Fexpand_file_name (filename, Qnil);
|
|
|
3530
|
|
|
3531 UNGCPRO;
|
|
|
3532
|
|
|
3533 if (NILP (lockname))
|
|
|
3534 lockname = visit_file;
|
|
|
3535
|
|
|
3536 /* If the file name has special constructs in it,
|
|
|
3537 call the corresponding file handler. */
|
|
|
3538 handler = Ffind_file_name_handler (filename, Qwrite_region);
|
|
|
3539 /* If FILENAME has no handler, see if VISIT has one. */
|
|
|
3540 if (NILP (handler) && STRINGP (visit))
|
|
|
3541 handler = Ffind_file_name_handler (visit, Qwrite_region);
|
|
|
3542
|
|
|
3543 if (!NILP (handler))
|
|
|
3544 {
|
|
151
|
3545 Lisp_Object val = call8 (handler, Qwrite_region, start, end,
|
|
86
|
3546 filename, append, visit, lockname, codesys);
|
|
0
|
3547 if (visiting)
|
|
|
3548 {
|
|
|
3549 BUF_SAVE_MODIFF (current_buffer) = BUF_MODIFF (current_buffer);
|
|
|
3550 current_buffer->save_length =
|
|
|
3551 make_int (BUF_SIZE (current_buffer));
|
|
|
3552 current_buffer->filename = visit_file;
|
|
|
3553 MARK_MODELINE_CHANGED;
|
|
|
3554 }
|
|
|
3555 return val;
|
|
|
3556 }
|
|
|
3557 }
|
|
|
3558
|
|
|
3559 #ifdef CLASH_DETECTION
|
|
|
3560 if (!auto_saving)
|
|
|
3561 {
|
|
114
|
3562 Lisp_Object curbuf;
|
|
|
3563 struct gcpro gcpro1, gcpro2, gcpro3, gcpro4, gcpro5;
|
|
|
3564
|
|
|
3565 XSETBUFFER (curbuf, current_buffer);
|
|
|
3566 GCPRO5 (start, filename, visit_file, lockname, curbuf);
|
|
0
|
3567 lock_file (lockname);
|
|
|
3568 UNGCPRO;
|
|
|
3569 }
|
|
|
3570 #endif /* CLASH_DETECTION */
|
|
|
3571
|
|
|
3572 /* Special kludge to simplify auto-saving. */
|
|
|
3573 if (NILP (start))
|
|
|
3574 {
|
|
|
3575 start1 = BUF_BEG (current_buffer);
|
|
|
3576 end1 = BUF_Z (current_buffer);
|
|
|
3577 }
|
|
|
3578
|
|
|
3579 record_unwind_protect (build_annotations_unwind, Fcurrent_buffer ());
|
|
|
3580
|
|
|
3581 given_buffer = current_buffer;
|
|
|
3582 annotations = build_annotations (start, end);
|
|
|
3583 if (current_buffer != given_buffer)
|
|
|
3584 {
|
|
|
3585 start1 = BUF_BEGV (current_buffer);
|
|
|
3586 end1 = BUF_ZV (current_buffer);
|
|
|
3587 }
|
|
|
3588
|
|
|
3589 fn = filename;
|
|
|
3590 desc = -1;
|
|
|
3591 if (!NILP (append))
|
|
|
3592 #ifdef DOS_NT
|
|
16
|
3593 desc = open ((char *) XSTRING_DATA (fn),
|
|
211
|
3594 (O_WRONLY | buffer_file_type), 0);
|
|
0
|
3595 #else /* not DOS_NT */
|
|
16
|
3596 desc = open ((char *) XSTRING_DATA (fn), O_WRONLY, 0);
|
|
0
|
3597 #endif /* not DOS_NT */
|
|
|
3598
|
|
|
3599 if (desc < 0)
|
|
|
3600 {
|
|
|
3601 #ifdef DOS_NT
|
|
151
|
3602 desc = open ((char *) XSTRING_DATA (fn),
|
|
211
|
3603 (O_WRONLY | O_TRUNC | O_CREAT | buffer_file_type),
|
|
0
|
3604 (S_IREAD | S_IWRITE));
|
|
|
3605 #else /* not DOS_NT */
|
|
16
|
3606 desc = creat ((char *) XSTRING_DATA (fn),
|
|
0
|
3607 ((auto_saving) ? auto_save_mode_bits : 0666));
|
|
|
3608 #endif /* DOS_NT */
|
|
|
3609 }
|
|
|
3610
|
|
|
3611 if (desc < 0)
|
|
|
3612 {
|
|
|
3613 #ifdef CLASH_DETECTION
|
|
|
3614 save_errno = errno;
|
|
|
3615 if (!auto_saving) unlock_file (lockname);
|
|
|
3616 errno = save_errno;
|
|
|
3617 #endif /* CLASH_DETECTION */
|
|
227
|
3618 report_file_error ("Opening output file", list1 (filename));
|
|
0
|
3619 }
|
|
|
3620
|
|
|
3621 {
|
|
|
3622 Lisp_Object desc_locative = Fcons (make_int (desc), Qnil);
|
|
|
3623 Lisp_Object instream = Qnil, outstream = Qnil;
|
|
|
3624 struct gcpro gcpro1, gcpro2;
|
|
|
3625 /* need to gcpro; QUIT could happen out of call to write() */
|
|
|
3626 GCPRO2 (instream, outstream);
|
|
|
3627
|
|
|
3628 record_unwind_protect (close_file_unwind, desc_locative);
|
|
|
3629
|
|
|
3630 if (!NILP (append))
|
|
|
3631 {
|
|
|
3632 if (lseek (desc, 0, 2) < 0)
|
|
|
3633 {
|
|
|
3634 #ifdef CLASH_DETECTION
|
|
|
3635 if (!auto_saving) unlock_file (lockname);
|
|
|
3636 #endif /* CLASH_DETECTION */
|
|
|
3637 report_file_error ("Lseek error",
|
|
|
3638 list1 (filename));
|
|
|
3639 }
|
|
|
3640 }
|
|
|
3641
|
|
|
3642 failure = 0;
|
|
|
3643
|
|
|
3644 /* Note: I tried increasing the buffering size, along with
|
|
|
3645 various other tricks, but nothing seemed to make much of
|
|
|
3646 a difference in the time it took to save a large file.
|
|
|
3647 (Actually that's not true. With a local disk, changing
|
|
|
3648 the buffer size doesn't seem to make much difference.
|
|
|
3649 With an NFS-mounted disk, it could make a lot of difference
|
|
|
3650 because you're affecting the number of network requests
|
|
|
3651 that need to be made, and there could be a large latency
|
|
|
3652 for each request. So I've increased the buffer size
|
|
|
3653 to 64K.) */
|
|
|
3654 outstream = make_filedesc_output_stream (desc, 0, -1, 0);
|
|
|
3655 Lstream_set_buffering (XLSTREAM (outstream),
|
|
|
3656 LSTREAM_BLOCKN_BUFFERED, 65536);
|
|
70
|
3657 #ifdef MULE
|
|
|
3658 outstream =
|
|
185
|
3659 make_encoding_output_stream (XLSTREAM (outstream), codesys);
|
|
70
|
3660 Lstream_set_buffering (XLSTREAM (outstream),
|
|
|
3661 LSTREAM_BLOCKN_BUFFERED, 65536);
|
|
183
|
3662 #endif /* MULE */
|
|
0
|
3663 if (STRINGP (start))
|
|
|
3664 {
|
|
|
3665 instream = make_lisp_string_input_stream (start, 0, -1);
|
|
|
3666 start1 = 0;
|
|
|
3667 }
|
|
|
3668 else
|
|
|
3669 instream = make_lisp_buffer_input_stream (current_buffer, start1, end1,
|
|
|
3670 LSTR_SELECTIVE |
|
|
|
3671 LSTR_IGNORE_ACCESSIBLE);
|
|
|
3672 failure = (0 > (a_write (outstream, instream, start1,
|
|
|
3673 &annotations)));
|
|
|
3674 save_errno = errno;
|
|
|
3675 /* Note that this doesn't close the desc since we created the
|
|
|
3676 stream without the LSTR_CLOSING flag, but it does
|
|
|
3677 flush out any buffered data. */
|
|
|
3678 if (Lstream_close (XLSTREAM (outstream)) < 0)
|
|
|
3679 {
|
|
|
3680 failure = 1;
|
|
|
3681 save_errno = errno;
|
|
|
3682 }
|
|
|
3683 Lstream_close (XLSTREAM (instream));
|
|
|
3684 UNGCPRO;
|
|
|
3685
|
|
|
3686 #ifdef HAVE_FSYNC
|
|
|
3687 /* Note fsync appears to change the modtime on BSD4.2 (both vax and sun).
|
|
|
3688 Disk full in NFS may be reported here. */
|
|
|
3689 /* mib says that closing the file will try to write as fast as NFS can do
|
|
|
3690 it, and that means the fsync here is not crucial for autosave files. */
|
|
|
3691 if (!auto_saving && fsync (desc) < 0
|
|
|
3692 /* If fsync fails with EINTR, don't treat that as serious. */
|
|
|
3693 && errno != EINTR)
|
|
|
3694 {
|
|
|
3695 failure = 1;
|
|
|
3696 save_errno = errno;
|
|
|
3697 }
|
|
183
|
3698 #endif /* HAVE_FSYNC */
|
|
0
|
3699
|
|
151
|
3700 /* Spurious "file has changed on disk" warnings have been
|
|
0
|
3701 observed on Suns as well.
|
|
|
3702 It seems that `close' can change the modtime, under nfs.
|
|
|
3703
|
|
|
3704 (This has supposedly been fixed in Sunos 4,
|
|
|
3705 but who knows about all the other machines with NFS?) */
|
|
|
3706 /* On VMS and APOLLO, must do the stat after the close
|
|
|
3707 since closing changes the modtime. */
|
|
|
3708 #if 0 /* !defined (VMS) && !defined (APOLLO) */
|
|
|
3709 fstat (desc, &st);
|
|
|
3710 #endif
|
|
|
3711
|
|
|
3712 /* NFS can report a write failure now. */
|
|
|
3713 if (close (desc) < 0)
|
|
|
3714 {
|
|
|
3715 failure = 1;
|
|
|
3716 save_errno = errno;
|
|
|
3717 }
|
|
|
3718
|
|
|
3719 /* Discard the close unwind-protect. Execute the one for
|
|
|
3720 build_annotations (switches back to the original current buffer
|
|
|
3721 as necessary). */
|
|
|
3722 XCAR (desc_locative) = Qnil;
|
|
|
3723 unbind_to (speccount, Qnil);
|
|
|
3724 }
|
|
151
|
3725
|
|
0
|
3726
|
|
|
3727 #if 1 /* defined (VMS) || defined (APOLLO) */
|
|
16
|
3728 stat ((char *) XSTRING_DATA (fn), &st);
|
|
0
|
3729 #endif
|
|
|
3730
|
|
|
3731 #ifdef CLASH_DETECTION
|
|
|
3732 if (!auto_saving)
|
|
|
3733 unlock_file (lockname);
|
|
|
3734 #endif /* CLASH_DETECTION */
|
|
|
3735
|
|
|
3736 /* Do this before reporting IO error
|
|
|
3737 to avoid a "file has changed on disk" warning on
|
|
|
3738 next attempt to save. */
|
|
|
3739 if (visiting)
|
|
|
3740 current_buffer->modtime = st.st_mtime;
|
|
|
3741
|
|
|
3742 if (failure)
|
|
151
|
3743 error ("IO error writing %s: %s",
|
|
|
3744 XSTRING_DATA (fn),
|
|
0
|
3745 strerror (save_errno));
|
|
|
3746
|
|
|
3747 if (visiting)
|
|
|
3748 {
|
|
|
3749 BUF_SAVE_MODIFF (current_buffer) = BUF_MODIFF (current_buffer);
|
|
|
3750 current_buffer->save_length = make_int (BUF_SIZE (current_buffer));
|
|
|
3751 current_buffer->filename = visit_file;
|
|
|
3752 MARK_MODELINE_CHANGED;
|
|
|
3753 }
|
|
|
3754 else if (quietly)
|
|
|
3755 {
|
|
|
3756 return Qnil;
|
|
|
3757 }
|
|
|
3758
|
|
|
3759 if (!auto_saving)
|
|
|
3760 {
|
|
|
3761 if (visiting_other)
|
|
16
|
3762 message ("Wrote %s", XSTRING_DATA (visit_file));
|
|
0
|
3763 else
|
|
|
3764 {
|
|
|
3765 struct gcpro gcpro1;
|
|
|
3766 Lisp_Object fsp;
|
|
|
3767 GCPRO1 (fn);
|
|
|
3768
|
|
|
3769 fsp = Ffile_symlink_p (fn);
|
|
|
3770 if (NILP (fsp))
|
|
16
|
3771 message ("Wrote %s", XSTRING_DATA (fn));
|
|
0
|
3772 else
|
|
151
|
3773 message ("Wrote %s (symlink to %s)",
|
|
16
|
3774 XSTRING_DATA (fn), XSTRING_DATA (fsp));
|
|
0
|
3775 UNGCPRO;
|
|
|
3776 }
|
|
|
3777 }
|
|
|
3778 return Qnil;
|
|
|
3779 }
|
|
|
3780
|
|
|
3781 /* #### This is such a load of shit!!!! There is no way we should define
|
|
|
3782 something so stupid as a subr, just sort the fucking list more
|
|
|
3783 intelligently. */
|
|
20
|
3784 DEFUN ("car-less-than-car", Fcar_less_than_car, 2, 2, 0, /*
|
|
0
|
3785 Return t if (car A) is numerically less than (car B).
|
|
20
|
3786 */
|
|
|
3787 (a, b))
|
|
0
|
3788 {
|
|
|
3789 return Flss (Fcar (a), Fcar (b));
|
|
|
3790 }
|
|
|
3791
|
|
|
3792 /* Heh heh heh, let's define this too, just to aggravate the person who
|
|
|
3793 wrote the above comment. */
|
|
20
|
3794 DEFUN ("cdr-less-than-cdr", Fcdr_less_than_cdr, 2, 2, 0, /*
|
|
0
|
3795 Return t if (cdr A) is numerically less than (cdr B).
|
|
20
|
3796 */
|
|
|
3797 (a, b))
|
|
0
|
3798 {
|
|
|
3799 return Flss (Fcdr (a), Fcdr (b));
|
|
|
3800 }
|
|
|
3801
|
|
|
3802 /* Build the complete list of annotations appropriate for writing out
|
|
|
3803 the text between START and END, by calling all the functions in
|
|
|
3804 write-region-annotate-functions and merging the lists they return.
|
|
|
3805 If one of these functions switches to a different buffer, we assume
|
|
|
3806 that buffer contains altered text. Therefore, the caller must
|
|
|
3807 make sure to restore the current buffer in all cases,
|
|
|
3808 as save-excursion would do. */
|
|
|
3809
|
|
|
3810 static Lisp_Object
|
|
|
3811 build_annotations (Lisp_Object start, Lisp_Object end)
|
|
|
3812 {
|
|
|
3813 /* This function can GC */
|
|
|
3814 Lisp_Object annotations;
|
|
|
3815 Lisp_Object p, res;
|
|
|
3816 struct gcpro gcpro1, gcpro2;
|
|
215
|
3817 Lisp_Object original_buffer;
|
|
|
3818
|
|
|
3819 XSETBUFFER (original_buffer, current_buffer);
|
|
0
|
3820
|
|
|
3821 annotations = Qnil;
|
|
|
3822 p = Vwrite_region_annotate_functions;
|
|
|
3823 GCPRO2 (annotations, p);
|
|
|
3824 while (!NILP (p))
|
|
|
3825 {
|
|
|
3826 struct buffer *given_buffer = current_buffer;
|
|
|
3827 Vwrite_region_annotations_so_far = annotations;
|
|
|
3828 res = call2 (Fcar (p), start, end);
|
|
|
3829 /* If the function makes a different buffer current,
|
|
|
3830 assume that means this buffer contains altered text to be output.
|
|
|
3831 Reset START and END from the buffer bounds
|
|
|
3832 and discard all previous annotations because they should have
|
|
|
3833 been dealt with by this function. */
|
|
|
3834 if (current_buffer != given_buffer)
|
|
|
3835 {
|
|
|
3836 start = make_int (BUF_BEGV (current_buffer));
|
|
|
3837 end = make_int (BUF_ZV (current_buffer));
|
|
|
3838 annotations = Qnil;
|
|
|
3839 }
|
|
183
|
3840 Flength (res); /* Check basic validity of return value */
|
|
0
|
3841 annotations = merge (annotations, res, Qcar_less_than_car);
|
|
|
3842 p = Fcdr (p);
|
|
|
3843 }
|
|
|
3844
|
|
|
3845 /* Now do the same for annotation functions implied by the file-format */
|
|
|
3846 if (auto_saving && (!EQ (Vauto_save_file_format, Qt)))
|
|
|
3847 p = Vauto_save_file_format;
|
|
|
3848 else
|
|
|
3849 p = current_buffer->file_format;
|
|
|
3850 while (!NILP (p))
|
|
|
3851 {
|
|
|
3852 struct buffer *given_buffer = current_buffer;
|
|
|
3853 Vwrite_region_annotations_so_far = annotations;
|
|
215
|
3854 res = call4 (Qformat_annotate_function, Fcar (p), start, end,
|
|
|
3855 original_buffer);
|
|
0
|
3856 if (current_buffer != given_buffer)
|
|
|
3857 {
|
|
|
3858 start = make_int (BUF_BEGV (current_buffer));
|
|
|
3859 end = make_int (BUF_ZV (current_buffer));
|
|
|
3860 annotations = Qnil;
|
|
|
3861 }
|
|
183
|
3862 Flength (res);
|
|
0
|
3863 annotations = merge (annotations, res, Qcar_less_than_car);
|
|
|
3864 p = Fcdr (p);
|
|
|
3865 }
|
|
|
3866 UNGCPRO;
|
|
|
3867 return annotations;
|
|
|
3868 }
|
|
|
3869
|
|
|
3870 /* Write to stream OUTSTREAM the characters from INSTREAM (it is read until
|
|
|
3871 EOF is encountered), assuming they start at position POS in the buffer
|
|
|
3872 of string that STREAM refers to. Intersperse with them the annotations
|
|
|
3873 from *ANNOT that fall into the range of positions we are reading from,
|
|
|
3874 each at its appropriate position.
|
|
|
3875
|
|
|
3876 Modify *ANNOT by discarding elements as we output them.
|
|
|
3877 The return value is negative in case of system call failure. */
|
|
|
3878
|
|
|
3879 /* 4K should probably be fine. We just need to reduce the number of
|
|
|
3880 function calls to reasonable level. The Lstream stuff itself will
|
|
|
3881 batch to 64K to reduce the number of system calls. */
|
|
|
3882
|
|
|
3883 #define A_WRITE_BATCH_SIZE 4096
|
|
|
3884
|
|
|
3885 static int
|
|
|
3886 a_write (Lisp_Object outstream, Lisp_Object instream, int pos,
|
|
|
3887 Lisp_Object *annot)
|
|
|
3888 {
|
|
|
3889 Lisp_Object tem;
|
|
|
3890 int nextpos;
|
|
|
3891 unsigned char largebuf[A_WRITE_BATCH_SIZE];
|
|
|
3892 Lstream *instr = XLSTREAM (instream);
|
|
|
3893 Lstream *outstr = XLSTREAM (outstream);
|
|
|
3894
|
|
|
3895 while (NILP (*annot) || CONSP (*annot))
|
|
|
3896 {
|
|
|
3897 tem = Fcar_safe (Fcar (*annot));
|
|
|
3898 if (INTP (tem))
|
|
|
3899 nextpos = XINT (tem);
|
|
|
3900 else
|
|
|
3901 nextpos = INT_MAX;
|
|
70
|
3902 #ifdef MULE
|
|
|
3903 /* If there are annotations left and we have Mule, then we
|
|
|
3904 have to do the I/O one emchar at a time so we can
|
|
|
3905 determine when to insert the annotation. */
|
|
|
3906 if (!NILP (*annot))
|
|
|
3907 {
|
|
|
3908 Emchar ch;
|
|
|
3909 while (pos != nextpos && (ch = Lstream_get_emchar (instr)) != EOF)
|
|
|
3910 {
|
|
|
3911 if (Lstream_put_emchar (outstr, ch) < 0)
|
|
|
3912 return -1;
|
|
|
3913 pos++;
|
|
|
3914 }
|
|
|
3915 }
|
|
|
3916 else
|
|
183
|
3917 #endif /* MULE */
|
|
0
|
3918 {
|
|
|
3919 while (pos != nextpos)
|
|
|
3920 {
|
|
|
3921 /* Otherwise there is no point to that. Just go in batches. */
|
|
|
3922 int chunk = min (nextpos - pos, A_WRITE_BATCH_SIZE);
|
|
151
|
3923
|
|
0
|
3924 chunk = Lstream_read (instr, largebuf, chunk);
|
|
|
3925 if (chunk < 0)
|
|
|
3926 return -1;
|
|
|
3927 if (chunk == 0) /* EOF */
|
|
|
3928 break;
|
|
|
3929 if (Lstream_write (outstr, largebuf, chunk) < chunk)
|
|
|
3930 return -1;
|
|
|
3931 pos += chunk;
|
|
|
3932 }
|
|
|
3933 }
|
|
|
3934 if (pos == nextpos)
|
|
|
3935 {
|
|
|
3936 tem = Fcdr (Fcar (*annot));
|
|
|
3937 if (STRINGP (tem))
|
|
|
3938 {
|
|
16
|
3939 if (Lstream_write (outstr, XSTRING_DATA (tem),
|
|
|
3940 XSTRING_LENGTH (tem)) < 0)
|
|
0
|
3941 return -1;
|
|
|
3942 }
|
|
|
3943 *annot = Fcdr (*annot);
|
|
|
3944 }
|
|
|
3945 else
|
|
|
3946 return 0;
|
|
|
3947 }
|
|
|
3948 return -1;
|
|
|
3949 }
|
|
|
3950
|
|
|
3951
|
|
|
3952
|
|
|
3953 #if 0
|
|
|
3954 #include <des_crypt.h>
|
|
|
3955
|
|
|
3956 #define CRYPT_BLOCK_SIZE 8 /* bytes */
|
|
|
3957 #define CRYPT_KEY_SIZE 8 /* bytes */
|
|
|
3958
|
|
20
|
3959 DEFUN ("encrypt-string", Fencrypt_string, 2, 2, 0, /*
|
|
0
|
3960 Encrypt STRING using KEY.
|
|
20
|
3961 */
|
|
|
3962 (string, key))
|
|
0
|
3963 {
|
|
|
3964 char *encrypted_string, *raw_key;
|
|
|
3965 int rounded_size, extra, key_size;
|
|
|
3966
|
|
|
3967 /* !!#### May produce bogus data under Mule. */
|
|
|
3968 CHECK_STRING (string);
|
|
|
3969 CHECK_STRING (key);
|
|
|
3970
|
|
16
|
3971 extra = XSTRING_LENGTH (string) % CRYPT_BLOCK_SIZE;
|
|
|
3972 rounded_size = XSTRING_LENGTH (string) + extra;
|
|
0
|
3973 encrypted_string = alloca (rounded_size + 1);
|
|
16
|
3974 memcpy (encrypted_string, XSTRING_DATA (string), XSTRING_LENGTH (string));
|
|
0
|
3975 memset (encrypted_string + rounded_size - extra, 0, extra + 1);
|
|
|
3976
|
|
183
|
3977 key_size = min (CRYPT_KEY_SIZE, XSTRING_LENGTH (key))
|
|
0
|
3978
|
|
|
3979 raw_key = alloca (CRYPT_KEY_SIZE + 1);
|
|
16
|
3980 memcpy (raw_key, XSTRING_DATA (key), key_size);
|
|
0
|
3981 memset (raw_key + key_size, 0, (CRYPT_KEY_SIZE + 1) - key_size);
|
|
|
3982
|
|
183
|
3983 ecb_crypt (raw_key, encrypted_string, rounded_size,
|
|
|
3984 DES_ENCRYPT | DES_SW);
|
|
0
|
3985 return make_string (encrypted_string, rounded_size);
|
|
|
3986 }
|
|
|
3987
|
|
20
|
3988 DEFUN ("decrypt-string", Fdecrypt_string, 2, 2, 0, /*
|
|
0
|
3989 Decrypt STRING using KEY.
|
|
20
|
3990 */
|
|
|
3991 (string, key))
|
|
0
|
3992 {
|
|
|
3993 char *decrypted_string, *raw_key;
|
|
|
3994 int string_size, key_size;
|
|
|
3995
|
|
|
3996 CHECK_STRING (string);
|
|
|
3997 CHECK_STRING (key);
|
|
|
3998
|
|
16
|
3999 string_size = XSTRING_LENGTH (string) + 1;
|
|
0
|
4000 decrypted_string = alloca (string_size);
|
|
16
|
4001 memcpy (decrypted_string, XSTRING_DATA (string), string_size);
|
|
0
|
4002 decrypted_string[string_size - 1] = '\0';
|
|
|
4003
|
|
183
|
4004 key_size = min (CRYPT_KEY_SIZE, XSTRING_LENGTH (key))
|
|
0
|
4005
|
|
|
4006 raw_key = alloca (CRYPT_KEY_SIZE + 1);
|
|
16
|
4007 memcpy (raw_key, XSTRING_DATA (key), key_size);
|
|
0
|
4008 memset (raw_key + key_size, 0, (CRYPT_KEY_SIZE + 1) - key_size);
|
|
|
4009
|
|
|
4010
|
|
183
|
4011 ecb_crypt (raw_key, decrypted_string, string_size, D | DES_SW);
|
|
0
|
4012 return make_string (decrypted_string, string_size - 1);
|
|
|
4013 }
|
|
183
|
4014 #endif /* 0 */
|
|
0
|
4015
|
|
|
4016
|
|
20
|
4017 DEFUN ("verify-visited-file-modtime", Fverify_visited_file_modtime, 1, 1, 0, /*
|
|
0
|
4018 Return t if last mod time of BUF's visited file matches what BUF records.
|
|
|
4019 This means that the file has not been changed since it was visited or saved.
|
|
20
|
4020 */
|
|
|
4021 (buf))
|
|
0
|
4022 {
|
|
116
|
4023 /* This function can call lisp */
|
|
0
|
4024 struct buffer *b;
|
|
|
4025 struct stat st;
|
|
|
4026 Lisp_Object handler;
|
|
|
4027
|
|
|
4028 CHECK_BUFFER (buf);
|
|
|
4029 b = XBUFFER (buf);
|
|
|
4030
|
|
|
4031 if (!STRINGP (b->filename)) return Qt;
|
|
|
4032 if (b->modtime == 0) return Qt;
|
|
|
4033
|
|
|
4034 /* If the file name has special constructs in it,
|
|
|
4035 call the corresponding file handler. */
|
|
|
4036 handler = Ffind_file_name_handler (b->filename,
|
|
|
4037 Qverify_visited_file_modtime);
|
|
|
4038 if (!NILP (handler))
|
|
|
4039 return call2 (handler, Qverify_visited_file_modtime, buf);
|
|
|
4040
|
|
16
|
4041 if (stat ((char *) XSTRING_DATA (b->filename), &st) < 0)
|
|
0
|
4042 {
|
|
|
4043 /* If the file doesn't exist now and didn't exist before,
|
|
|
4044 we say that it isn't modified, provided the error is a tame one. */
|
|
|
4045 if (errno == ENOENT || errno == EACCES || errno == ENOTDIR)
|
|
|
4046 st.st_mtime = -1;
|
|
|
4047 else
|
|
|
4048 st.st_mtime = 0;
|
|
|
4049 }
|
|
|
4050 if (st.st_mtime == b->modtime
|
|
|
4051 /* If both are positive, accept them if they are off by one second. */
|
|
|
4052 || (st.st_mtime > 0 && b->modtime > 0
|
|
|
4053 && (st.st_mtime == b->modtime + 1
|
|
|
4054 || st.st_mtime == b->modtime - 1)))
|
|
|
4055 return Qt;
|
|
|
4056 return Qnil;
|
|
|
4057 }
|
|
|
4058
|
|
20
|
4059 DEFUN ("clear-visited-file-modtime", Fclear_visited_file_modtime, 0, 0, 0, /*
|
|
0
|
4060 Clear out records of last mod time of visited file.
|
|
|
4061 Next attempt to save will certainly not complain of a discrepancy.
|
|
20
|
4062 */
|
|
|
4063 ())
|
|
0
|
4064 {
|
|
|
4065 current_buffer->modtime = 0;
|
|
|
4066 return Qnil;
|
|
|
4067 }
|
|
|
4068
|
|
20
|
4069 DEFUN ("visited-file-modtime", Fvisited_file_modtime, 0, 0, 0, /*
|
|
0
|
4070 Return the current buffer's recorded visited file modification time.
|
|
|
4071 The value is a list of the form (HIGH . LOW), like the time values
|
|
|
4072 that `file-attributes' returns.
|
|
20
|
4073 */
|
|
|
4074 ())
|
|
0
|
4075 {
|
|
|
4076 return time_to_lisp ((time_t) current_buffer->modtime);
|
|
|
4077 }
|
|
|
4078
|
|
20
|
4079 DEFUN ("set-visited-file-modtime", Fset_visited_file_modtime, 0, 1, 0, /*
|
|
0
|
4080 Update buffer's recorded modification time from the visited file's time.
|
|
|
4081 Useful if the buffer was not read from the file normally
|
|
|
4082 or if the file itself has been changed for some known benign reason.
|
|
|
4083 An argument specifies the modification time value to use
|
|
|
4084 (instead of that of the visited file), in the form of a list
|
|
|
4085 (HIGH . LOW) or (HIGH LOW).
|
|
20
|
4086 */
|
|
|
4087 (time_list))
|
|
0
|
4088 {
|
|
116
|
4089 /* This function can call lisp */
|
|
0
|
4090 if (!NILP (time_list))
|
|
|
4091 {
|
|
|
4092 time_t the_time;
|
|
|
4093 lisp_to_time (time_list, &the_time);
|
|
|
4094 current_buffer->modtime = (int) the_time;
|
|
|
4095 }
|
|
|
4096 else
|
|
|
4097 {
|
|
|
4098 Lisp_Object filename;
|
|
|
4099 struct stat st;
|
|
|
4100 Lisp_Object handler;
|
|
114
|
4101 struct gcpro gcpro1, gcpro2, gcpro3;
|
|
151
|
4102
|
|
114
|
4103 GCPRO3 (filename, time_list, current_buffer->filename);
|
|
|
4104 filename = Fexpand_file_name (current_buffer->filename, Qnil);
|
|
0
|
4105
|
|
|
4106 /* If the file name has special constructs in it,
|
|
|
4107 call the corresponding file handler. */
|
|
|
4108 handler = Ffind_file_name_handler (filename, Qset_visited_file_modtime);
|
|
|
4109 UNGCPRO;
|
|
|
4110 if (!NILP (handler))
|
|
|
4111 /* The handler can find the file name the same way we did. */
|
|
|
4112 return call2 (handler, Qset_visited_file_modtime, Qnil);
|
|
16
|
4113 else if (stat ((char *) XSTRING_DATA (filename), &st) >= 0)
|
|
0
|
4114 current_buffer->modtime = st.st_mtime;
|
|
|
4115 }
|
|
|
4116
|
|
|
4117 return Qnil;
|
|
|
4118 }
|
|
|
4119
|
|
|
4120 static Lisp_Object
|
|
|
4121 auto_save_error (Lisp_Object condition_object, Lisp_Object ignored)
|
|
|
4122 {
|
|
116
|
4123 /* This function can call lisp */
|
|
0
|
4124 if (gc_in_progress)
|
|
|
4125 return Qnil;
|
|
110
|
4126 /* Don't try printing an error message after everything is gone! */
|
|
|
4127 if (preparing_for_armageddon)
|
|
|
4128 return Qnil;
|
|
0
|
4129 clear_echo_area (selected_frame (), Qauto_saving, 1);
|
|
|
4130 Fding (Qt, Qauto_save_error, Qnil);
|
|
82
|
4131 message ("Auto-saving...error for %s", XSTRING_DATA (current_buffer->name));
|
|
0
|
4132 Fsleep_for (make_int (1));
|
|
82
|
4133 message ("Auto-saving...error!for %s", XSTRING_DATA (current_buffer->name));
|
|
0
|
4134 Fsleep_for (make_int (1));
|
|
82
|
4135 message ("Auto-saving...error for %s", XSTRING_DATA (current_buffer->name));
|
|
0
|
4136 Fsleep_for (make_int (1));
|
|
|
4137 return Qnil;
|
|
|
4138 }
|
|
|
4139
|
|
|
4140 static Lisp_Object
|
|
|
4141 auto_save_1 (Lisp_Object ignored)
|
|
|
4142 {
|
|
116
|
4143 /* This function can call lisp */
|
|
|
4144 /* #### I think caller is protecting current_buffer? */
|
|
0
|
4145 struct stat st;
|
|
|
4146 Lisp_Object fn = current_buffer->filename;
|
|
|
4147 Lisp_Object a = current_buffer->auto_save_file_name;
|
|
|
4148
|
|
|
4149 if (!STRINGP (a))
|
|
|
4150 return (Qnil);
|
|
|
4151
|
|
|
4152 /* Get visited file's mode to become the auto save file's mode. */
|
|
|
4153 if (STRINGP (fn) &&
|
|
16
|
4154 stat ((char *) XSTRING_DATA (fn), &st) >= 0)
|
|
0
|
4155 /* But make sure we can overwrite it later! */
|
|
|
4156 auto_save_mode_bits = st.st_mode | 0600;
|
|
|
4157 else
|
|
|
4158 /* default mode for auto-save files of buffers with no file is
|
|
|
4159 readable by owner only. This may annoy some small number of
|
|
|
4160 people, but the alternative removes all privacy from email. */
|
|
|
4161 auto_save_mode_bits = 0600;
|
|
|
4162
|
|
|
4163 return
|
|
70
|
4164 /* !!#### need to deal with this 'escape-quoted everywhere */
|
|
|
4165 Fwrite_region_internal (Qnil, Qnil, a, Qnil, Qlambda, Qnil,
|
|
|
4166 #ifdef MULE
|
|
|
4167 Qescape_quoted
|
|
|
4168 #else
|
|
|
4169 Qnil
|
|
|
4170 #endif
|
|
|
4171 );
|
|
44
|
4172 }
|
|
|
4173
|
|
116
|
4174 static Lisp_Object
|
|
|
4175 auto_save_expand_name_error (Lisp_Object condition_object, Lisp_Object ignored)
|
|
|
4176 {
|
|
|
4177 /* #### this function should spew an error message about not being
|
|
|
4178 able to open the .saves file. */
|
|
|
4179 return Qnil;
|
|
|
4180 }
|
|
|
4181
|
|
|
4182 static Lisp_Object
|
|
|
4183 auto_save_expand_name (Lisp_Object name)
|
|
|
4184 {
|
|
|
4185 struct gcpro gcpro1;
|
|
|
4186
|
|
|
4187 /* note that caller did NOT gc protect name, so we do it. */
|
|
|
4188 /* #### dmoore - this might not be neccessary, if condition_case_1
|
|
|
4189 protects it. but I don't think it does. */
|
|
|
4190 GCPRO1 (name);
|
|
|
4191 RETURN_UNGCPRO (Fexpand_file_name (name, Qnil));
|
|
|
4192 }
|
|
|
4193
|
|
0
|
4194
|
|
|
4195 static Lisp_Object
|
|
|
4196 do_auto_save_unwind (Lisp_Object fd)
|
|
|
4197 {
|
|
|
4198 close (XINT (fd));
|
|
|
4199 return (fd);
|
|
|
4200 }
|
|
|
4201
|
|
|
4202 static Lisp_Object
|
|
|
4203 do_auto_save_unwind_2 (Lisp_Object old_auto_saving)
|
|
|
4204 {
|
|
|
4205 auto_saving = XINT (old_auto_saving);
|
|
|
4206 return Qnil;
|
|
|
4207 }
|
|
|
4208
|
|
|
4209 /* Fdo_auto_save() checks whether a GC is in progress when it is called,
|
|
|
4210 and if so, tries to avoid touching lisp objects.
|
|
|
4211
|
|
|
4212 The only time that Fdo_auto_save() is called while GC is in progress
|
|
|
4213 is if we're going down, as a result of an abort() or a kill signal.
|
|
|
4214 It's fairly important that we generate autosave files in that case!
|
|
|
4215 */
|
|
|
4216
|
|
20
|
4217 DEFUN ("do-auto-save", Fdo_auto_save, 0, 2, "", /*
|
|
0
|
4218 Auto-save all buffers that need it.
|
|
|
4219 This is all buffers that have auto-saving enabled
|
|
|
4220 and are changed since last auto-saved.
|
|
|
4221 Auto-saving writes the buffer into a file
|
|
|
4222 so that your editing is not lost if the system crashes.
|
|
|
4223 This file is not the file you visited; that changes only when you save.
|
|
|
4224 Normally we run the normal hook `auto-save-hook' before saving.
|
|
|
4225
|
|
|
4226 Non-nil first argument means do not print any message if successful.
|
|
|
4227 Non-nil second argument means save only current buffer.
|
|
20
|
4228 */
|
|
|
4229 (no_message, current_only))
|
|
0
|
4230 {
|
|
116
|
4231 /* This function can call lisp */
|
|
110
|
4232 struct buffer *b;
|
|
0
|
4233 Lisp_Object tail, buf;
|
|
|
4234 int auto_saved = 0;
|
|
|
4235 int do_handled_files;
|
|
|
4236 Lisp_Object oquit = Qnil;
|
|
|
4237 Lisp_Object listfile = Qnil;
|
|
110
|
4238 Lisp_Object old;
|
|
0
|
4239 int listdesc = -1;
|
|
|
4240 int speccount = specpdl_depth ();
|
|
110
|
4241 struct gcpro gcpro1, gcpro2, gcpro3;
|
|
|
4242
|
|
|
4243 XSETBUFFER (old, current_buffer);
|
|
|
4244 GCPRO3 (oquit, listfile, old);
|
|
0
|
4245 check_quit (); /* make Vquit_flag accurate */
|
|
|
4246 /* Ordinarily don't quit within this function,
|
|
|
4247 but don't make it impossible to quit (in case we get hung in I/O). */
|
|
|
4248 oquit = Vquit_flag;
|
|
|
4249 Vquit_flag = Qnil;
|
|
|
4250
|
|
|
4251 /* No further GCPRO needed, because (when it matters) all Lisp_Object
|
|
|
4252 variables point to non-strings reached from Vbuffer_alist. */
|
|
|
4253
|
|
|
4254 if (minibuf_level != 0 || preparing_for_armageddon)
|
|
|
4255 no_message = Qt;
|
|
|
4256
|
|
|
4257 run_hook (Qauto_save_hook);
|
|
|
4258
|
|
|
4259 if (GC_STRINGP (Vauto_save_list_file_name))
|
|
116
|
4260 listfile = condition_case_1 (Qt,
|
|
|
4261 auto_save_expand_name,
|
|
|
4262 Vauto_save_list_file_name,
|
|
|
4263 auto_save_expand_name_error, Qnil);
|
|
0
|
4264
|
|
|
4265 /* Make sure auto_saving is reset. */
|
|
|
4266 record_unwind_protect (do_auto_save_unwind_2, make_int (auto_saving));
|
|
|
4267
|
|
|
4268 auto_saving = 1;
|
|
|
4269
|
|
|
4270 /* First, save all files which don't have handlers. If Emacs is
|
|
|
4271 crashing, the handlers may tweak what is causing Emacs to crash
|
|
|
4272 in the first place, and it would be a shame if Emacs failed to
|
|
|
4273 autosave perfectly ordinary files because it couldn't handle some
|
|
|
4274 ange-ftp'd file. */
|
|
|
4275 for (do_handled_files = 0; do_handled_files < 2; do_handled_files++)
|
|
|
4276 {
|
|
|
4277 for (tail = Vbuffer_alist;
|
|
|
4278 GC_CONSP (tail);
|
|
|
4279 tail = XCDR (tail))
|
|
|
4280 {
|
|
|
4281 buf = XCDR (XCAR (tail));
|
|
|
4282 b = XBUFFER (buf);
|
|
|
4283
|
|
|
4284 if (!GC_NILP (current_only)
|
|
|
4285 && b != current_buffer)
|
|
|
4286 continue;
|
|
151
|
4287
|
|
0
|
4288 /* Don't auto-save indirect buffers.
|
|
|
4289 The base buffer takes care of it. */
|
|
|
4290 if (b->base_buffer)
|
|
|
4291 continue;
|
|
|
4292
|
|
|
4293 /* Check for auto save enabled
|
|
|
4294 and file changed since last auto save
|
|
|
4295 and file changed since last real save. */
|
|
|
4296 if (GC_STRINGP (b->auto_save_file_name)
|
|
|
4297 && BUF_SAVE_MODIFF (b) < BUF_MODIFF (b)
|
|
|
4298 && b->auto_save_modified < BUF_MODIFF (b)
|
|
|
4299 /* -1 means we've turned off autosaving for a while--see below. */
|
|
|
4300 && XINT (b->save_length) >= 0
|
|
|
4301 && (do_handled_files
|
|
|
4302 || NILP (Ffind_file_name_handler (b->auto_save_file_name,
|
|
|
4303 Qwrite_region))))
|
|
|
4304 {
|
|
|
4305 EMACS_TIME before_time, after_time;
|
|
|
4306
|
|
|
4307 EMACS_GET_TIME (before_time);
|
|
|
4308 /* If we had a failure, don't try again for 20 minutes. */
|
|
|
4309 if (!preparing_for_armageddon
|
|
|
4310 && b->auto_save_failure_time >= 0
|
|
|
4311 && (EMACS_SECS (before_time) - b->auto_save_failure_time <
|
|
|
4312 1200))
|
|
|
4313 continue;
|
|
|
4314
|
|
|
4315 if (!preparing_for_armageddon &&
|
|
|
4316 (XINT (b->save_length) * 10
|
|
|
4317 > (BUF_Z (b) - BUF_BEG (b)) * 13)
|
|
|
4318 /* A short file is likely to change a large fraction;
|
|
|
4319 spare the user annoying messages. */
|
|
|
4320 && XINT (b->save_length) > 5000
|
|
|
4321 /* These messages are frequent and annoying for `*mail*'. */
|
|
|
4322 && !EQ (b->filename, Qnil)
|
|
|
4323 && NILP (no_message)
|
|
|
4324 && disable_auto_save_when_buffer_shrinks)
|
|
|
4325 {
|
|
|
4326 /* It has shrunk too much; turn off auto-saving here.
|
|
|
4327 Unless we're about to crash, in which case auto-save it
|
|
|
4328 anyway.
|
|
|
4329 */
|
|
|
4330 message
|
|
|
4331 ("Buffer %s has shrunk a lot; auto save turned off there",
|
|
16
|
4332 XSTRING_DATA (b->name));
|
|
0
|
4333 /* Turn off auto-saving until there's a real save,
|
|
|
4334 and prevent any more warnings. */
|
|
|
4335 b->save_length = make_int (-1);
|
|
|
4336 if (!gc_in_progress)
|
|
|
4337 Fsleep_for (make_int (1));
|
|
|
4338 continue;
|
|
|
4339 }
|
|
|
4340 set_buffer_internal (b);
|
|
|
4341 if (!auto_saved && GC_NILP (no_message))
|
|
|
4342 {
|
|
|
4343 static CONST unsigned char *msg
|
|
|
4344 = (CONST unsigned char *) "Auto-saving...";
|
|
|
4345 echo_area_message (selected_frame (), msg, Qnil,
|
|
|
4346 0, strlen ((CONST char *) msg),
|
|
|
4347 Qauto_saving);
|
|
|
4348 }
|
|
|
4349
|
|
|
4350 /* Open the auto-save list file, if necessary.
|
|
|
4351 We only do this now so that the file only exists
|
|
|
4352 if we actually auto-saved any files. */
|
|
|
4353 if (!auto_saved && GC_STRINGP (listfile) && listdesc < 0)
|
|
|
4354 {
|
|
|
4355 #ifdef DOS_NT
|
|
70
|
4356 listdesc = open ((char *) XSTRING_DATA (listfile),
|
|
167
|
4357 O_WRONLY | O_TRUNC | O_CREAT | O_BINARY,
|
|
0
|
4358 S_IREAD | S_IWRITE);
|
|
|
4359 #else /* not DOS_NT */
|
|
16
|
4360 listdesc = creat ((char *) XSTRING_DATA (listfile), 0666);
|
|
0
|
4361 #endif /* not DOS_NT */
|
|
|
4362
|
|
|
4363 /* Arrange to close that file whether or not we get
|
|
|
4364 an error. */
|
|
|
4365 if (listdesc >= 0)
|
|
|
4366 record_unwind_protect (do_auto_save_unwind,
|
|
|
4367 make_int (listdesc));
|
|
|
4368 }
|
|
|
4369
|
|
|
4370 /* Record all the buffers that we are auto-saving in
|
|
|
4371 the special file that lists them. For each of
|
|
|
4372 these buffers, record visited name (if any) and
|
|
|
4373 auto save name. */
|
|
|
4374 if (listdesc >= 0)
|
|
|
4375 {
|
|
|
4376 Extbyte *auto_save_file_name_ext;
|
|
|
4377 Extcount auto_save_file_name_ext_len;
|
|
151
|
4378
|
|
0
|
4379 GET_STRING_FILENAME_DATA_ALLOCA
|
|
|
4380 (b->auto_save_file_name,
|
|
|
4381 auto_save_file_name_ext,
|
|
|
4382 auto_save_file_name_ext_len);
|
|
|
4383 if (!NILP (b->filename))
|
|
|
4384 {
|
|
|
4385 Extbyte *filename_ext;
|
|
|
4386 Extcount filename_ext_len;
|
|
151
|
4387
|
|
0
|
4388 GET_STRING_FILENAME_DATA_ALLOCA (b->filename,
|
|
|
4389 filename_ext,
|
|
|
4390 filename_ext_len);
|
|
|
4391 write (listdesc, filename_ext, filename_ext_len);
|
|
|
4392 }
|
|
|
4393 write (listdesc, "\n", 1);
|
|
|
4394 write (listdesc, auto_save_file_name_ext,
|
|
|
4395 auto_save_file_name_ext_len);
|
|
|
4396 write (listdesc, "\n", 1);
|
|
|
4397 }
|
|
|
4398
|
|
110
|
4399 /* dmoore - In a bad scenario we've set b=XBUFFER(buf)
|
|
|
4400 based on values in Vbuffer_alist. auto_save_1 may
|
|
|
4401 cause lisp handlers to run. Those handlers may kill
|
|
|
4402 the buffer and then GC. Since the buffer is killed,
|
|
|
4403 it's no longer in Vbuffer_alist so it might get reaped
|
|
|
4404 by the GC. We also need to protect tail. */
|
|
|
4405 /* #### There is probably a lot of other code which has
|
|
|
4406 pointers into buffers which may get blown away by
|
|
|
4407 handlers. */
|
|
|
4408 {
|
|
169
|
4409 struct gcpro ngcpro1, ngcpro2;
|
|
|
4410 NGCPRO2 (buf, tail);
|
|
110
|
4411 condition_case_1 (Qt,
|
|
|
4412 auto_save_1, Qnil,
|
|
|
4413 auto_save_error, Qnil);
|
|
169
|
4414 NUNGCPRO;
|
|
110
|
4415 }
|
|
|
4416 /* Handler killed our saved current-buffer! Pick any. */
|
|
|
4417 if (!BUFFER_LIVE_P (XBUFFER (old)))
|
|
|
4418 XSETBUFFER (old, current_buffer);
|
|
|
4419
|
|
|
4420 set_buffer_internal (XBUFFER (old));
|
|
0
|
4421 auto_saved++;
|
|
151
|
4422
|
|
110
|
4423 /* Handler killed their own buffer! */
|
|
|
4424 if (!BUFFER_LIVE_P(b))
|
|
|
4425 continue;
|
|
|
4426
|
|
0
|
4427 b->auto_save_modified = BUF_MODIFF (b);
|
|
|
4428 b->save_length = make_int (BUF_SIZE (b));
|
|
|
4429 EMACS_GET_TIME (after_time);
|
|
|
4430 /* If auto-save took more than 60 seconds,
|
|
|
4431 assume it was an NFS failure that got a timeout. */
|
|
|
4432 if (EMACS_SECS (after_time) - EMACS_SECS (before_time) > 60)
|
|
|
4433 b->auto_save_failure_time = EMACS_SECS (after_time);
|
|
|
4434 }
|
|
|
4435 }
|
|
|
4436 }
|
|
|
4437
|
|
|
4438 /* Prevent another auto save till enough input events come in. */
|
|
|
4439 if (auto_saved)
|
|
|
4440 record_auto_save ();
|
|
|
4441
|
|
|
4442 /* If we didn't save anything into the listfile, remove the old
|
|
|
4443 one because nothing needed to be auto-saved. Do this afterwards
|
|
|
4444 rather than before in case we get a crash attempting to autosave
|
|
|
4445 (in that case we'd still want the old one around). */
|
|
|
4446 if (listdesc < 0 && !auto_saved && GC_STRINGP (listfile))
|
|
16
|
4447 unlink ((char *) XSTRING_DATA (listfile));
|
|
0
|
4448
|
|
|
4449 /* Show "...done" only if the echo area would otherwise be empty. */
|
|
|
4450 if (auto_saved && NILP (no_message)
|
|
|
4451 && NILP (clear_echo_area (selected_frame (), Qauto_saving, 0)))
|
|
|
4452 {
|
|
|
4453 static CONST unsigned char *msg
|
|
|
4454 = (CONST unsigned char *)"Auto-saving...done";
|
|
|
4455 echo_area_message (selected_frame (), msg, Qnil, 0,
|
|
|
4456 strlen ((CONST char *) msg), Qauto_saving);
|
|
|
4457 }
|
|
|
4458
|
|
|
4459 Vquit_flag = oquit;
|
|
|
4460
|
|
|
4461 RETURN_UNGCPRO (unbind_to (speccount, Qnil));
|
|
|
4462 }
|
|
|
4463
|
|
20
|
4464 DEFUN ("set-buffer-auto-saved", Fset_buffer_auto_saved, 0, 0, 0, /*
|
|
0
|
4465 Mark current buffer as auto-saved with its current text.
|
|
|
4466 No auto-save file will be written until the buffer changes again.
|
|
20
|
4467 */
|
|
|
4468 ())
|
|
0
|
4469 {
|
|
|
4470 current_buffer->auto_save_modified = BUF_MODIFF (current_buffer);
|
|
|
4471 current_buffer->save_length = make_int (BUF_SIZE (current_buffer));
|
|
|
4472 current_buffer->auto_save_failure_time = -1;
|
|
|
4473 return Qnil;
|
|
|
4474 }
|
|
|
4475
|
|
20
|
4476 DEFUN ("clear-buffer-auto-save-failure", Fclear_buffer_auto_save_failure, 0, 0, 0, /*
|
|
0
|
4477 Clear any record of a recent auto-save failure in the current buffer.
|
|
20
|
4478 */
|
|
|
4479 ())
|
|
0
|
4480 {
|
|
|
4481 current_buffer->auto_save_failure_time = -1;
|
|
|
4482 return Qnil;
|
|
|
4483 }
|
|
|
4484
|
|
20
|
4485 DEFUN ("recent-auto-save-p", Frecent_auto_save_p, 0, 0, 0, /*
|
|
0
|
4486 Return t if buffer has been auto-saved since last read in or saved.
|
|
20
|
4487 */
|
|
|
4488 ())
|
|
0
|
4489 {
|
|
|
4490 return (BUF_SAVE_MODIFF (current_buffer) <
|
|
|
4491 current_buffer->auto_save_modified) ? Qt : Qnil;
|
|
|
4492 }
|
|
|
4493
|
|
|
4494
|
|
|
4495 /************************************************************************/
|
|
|
4496 /* initialization */
|
|
|
4497 /************************************************************************/
|
|
|
4498
|
|
|
4499 void
|
|
|
4500 syms_of_fileio (void)
|
|
|
4501 {
|
|
|
4502 defsymbol (&Qexpand_file_name, "expand-file-name");
|
|
|
4503 defsymbol (&Qfile_truename, "file-truename");
|
|
|
4504 defsymbol (&Qsubstitute_in_file_name, "substitute-in-file-name");
|
|
|
4505 defsymbol (&Qdirectory_file_name, "directory-file-name");
|
|
|
4506 defsymbol (&Qfile_name_directory, "file-name-directory");
|
|
|
4507 defsymbol (&Qfile_name_nondirectory, "file-name-nondirectory");
|
|
|
4508 defsymbol (&Qunhandled_file_name_directory, "unhandled-file-name-directory");
|
|
|
4509 defsymbol (&Qfile_name_as_directory, "file-name-as-directory");
|
|
|
4510 defsymbol (&Qcopy_file, "copy-file");
|
|
|
4511 defsymbol (&Qmake_directory_internal, "make-directory-internal");
|
|
|
4512 defsymbol (&Qdelete_directory, "delete-directory");
|
|
|
4513 defsymbol (&Qdelete_file, "delete-file");
|
|
|
4514 defsymbol (&Qrename_file, "rename-file");
|
|
|
4515 defsymbol (&Qadd_name_to_file, "add-name-to-file");
|
|
|
4516 defsymbol (&Qmake_symbolic_link, "make-symbolic-link");
|
|
|
4517 defsymbol (&Qfile_exists_p, "file-exists-p");
|
|
|
4518 defsymbol (&Qfile_executable_p, "file-executable-p");
|
|
|
4519 defsymbol (&Qfile_readable_p, "file-readable-p");
|
|
|
4520 defsymbol (&Qfile_symlink_p, "file-symlink-p");
|
|
|
4521 defsymbol (&Qfile_writable_p, "file-writable-p");
|
|
|
4522 defsymbol (&Qfile_directory_p, "file-directory-p");
|
|
|
4523 defsymbol (&Qfile_regular_p, "file-regular-p");
|
|
|
4524 defsymbol (&Qfile_accessible_directory_p, "file-accessible-directory-p");
|
|
|
4525 defsymbol (&Qfile_modes, "file-modes");
|
|
|
4526 defsymbol (&Qset_file_modes, "set-file-modes");
|
|
|
4527 defsymbol (&Qfile_newer_than_file_p, "file-newer-than-file-p");
|
|
|
4528 defsymbol (&Qinsert_file_contents, "insert-file-contents");
|
|
|
4529 defsymbol (&Qwrite_region, "write-region");
|
|
|
4530 defsymbol (&Qverify_visited_file_modtime, "verify-visited-file-modtime");
|
|
|
4531 defsymbol (&Qset_visited_file_modtime, "set-visited-file-modtime");
|
|
|
4532 #ifdef DOS_NT
|
|
|
4533 defsymbol (&Qfind_buffer_file_type, "find-buffer-file-type");
|
|
|
4534 #endif /* DOS_NT */
|
|
|
4535 defsymbol (&Qcar_less_than_car, "car-less-than-car"); /* Vomitous! */
|
|
|
4536
|
|
|
4537 defsymbol (&Qfile_name_handler_alist, "file-name-handler-alist");
|
|
|
4538 defsymbol (&Qauto_save_hook, "auto-save-hook");
|
|
|
4539 defsymbol (&Qauto_save_error, "auto-save-error");
|
|
|
4540 defsymbol (&Qauto_saving, "auto-saving");
|
|
|
4541
|
|
|
4542 defsymbol (&Qformat_decode, "format-decode");
|
|
|
4543 defsymbol (&Qformat_annotate_function, "format-annotate-function");
|
|
|
4544
|
|
|
4545 defsymbol (&Qcompute_buffer_file_truename, "compute-buffer-file-truename");
|
|
|
4546 deferror (&Qfile_error, "file-error", "File error", Qio_error);
|
|
|
4547 deferror (&Qfile_already_exists, "file-already-exists",
|
|
|
4548 "File already exists", Qfile_error);
|
|
|
4549
|
|
20
|
4550 DEFSUBR (Ffind_file_name_handler);
|
|
|
4551
|
|
|
4552 DEFSUBR (Ffile_name_directory);
|
|
|
4553 DEFSUBR (Ffile_name_nondirectory);
|
|
|
4554 DEFSUBR (Funhandled_file_name_directory);
|
|
|
4555 DEFSUBR (Ffile_name_as_directory);
|
|
|
4556 DEFSUBR (Fdirectory_file_name);
|
|
|
4557 DEFSUBR (Fmake_temp_name);
|
|
|
4558 DEFSUBR (Fexpand_file_name);
|
|
|
4559 DEFSUBR (Ffile_truename);
|
|
|
4560 DEFSUBR (Fsubstitute_in_file_name);
|
|
|
4561 DEFSUBR (Fcopy_file);
|
|
|
4562 DEFSUBR (Fmake_directory_internal);
|
|
|
4563 DEFSUBR (Fdelete_directory);
|
|
|
4564 DEFSUBR (Fdelete_file);
|
|
|
4565 DEFSUBR (Frename_file);
|
|
|
4566 DEFSUBR (Fadd_name_to_file);
|
|
0
|
4567 #ifdef S_IFLNK
|
|
20
|
4568 DEFSUBR (Fmake_symbolic_link);
|
|
0
|
4569 #endif /* S_IFLNK */
|
|
|
4570 #ifdef HPUX_NET
|
|
20
|
4571 DEFSUBR (Fsysnetunam);
|
|
0
|
4572 #endif /* HPUX_NET */
|
|
20
|
4573 DEFSUBR (Ffile_name_absolute_p);
|
|
|
4574 DEFSUBR (Ffile_exists_p);
|
|
|
4575 DEFSUBR (Ffile_executable_p);
|
|
|
4576 DEFSUBR (Ffile_readable_p);
|
|
|
4577 DEFSUBR (Ffile_writable_p);
|
|
|
4578 DEFSUBR (Ffile_symlink_p);
|
|
|
4579 DEFSUBR (Ffile_directory_p);
|
|
|
4580 DEFSUBR (Ffile_accessible_directory_p);
|
|
|
4581 DEFSUBR (Ffile_regular_p);
|
|
|
4582 DEFSUBR (Ffile_modes);
|
|
|
4583 DEFSUBR (Fset_file_modes);
|
|
|
4584 DEFSUBR (Fset_default_file_modes);
|
|
|
4585 DEFSUBR (Fdefault_file_modes);
|
|
|
4586 DEFSUBR (Funix_sync);
|
|
|
4587 DEFSUBR (Ffile_newer_than_file_p);
|
|
|
4588 DEFSUBR (Finsert_file_contents_internal);
|
|
|
4589 DEFSUBR (Fwrite_region_internal);
|
|
|
4590 DEFSUBR (Fcar_less_than_car); /* Vomitous! */
|
|
|
4591 DEFSUBR (Fcdr_less_than_cdr); /* Yeah oh yeah bucko .... */
|
|
0
|
4592 #if 0
|
|
20
|
4593 DEFSUBR (Fencrypt_string);
|
|
|
4594 DEFSUBR (Fdecrypt_string);
|
|
0
|
4595 #endif
|
|
20
|
4596 DEFSUBR (Fverify_visited_file_modtime);
|
|
|
4597 DEFSUBR (Fclear_visited_file_modtime);
|
|
|
4598 DEFSUBR (Fvisited_file_modtime);
|
|
|
4599 DEFSUBR (Fset_visited_file_modtime);
|
|
|
4600
|
|
|
4601 DEFSUBR (Fdo_auto_save);
|
|
|
4602 DEFSUBR (Fset_buffer_auto_saved);
|
|
|
4603 DEFSUBR (Fclear_buffer_auto_save_failure);
|
|
|
4604 DEFSUBR (Frecent_auto_save_p);
|
|
0
|
4605 }
|
|
|
4606
|
|
|
4607 void
|
|
|
4608 vars_of_fileio (void)
|
|
|
4609 {
|
|
|
4610 DEFVAR_LISP ("auto-save-file-format", &Vauto_save_file_format /*
|
|
|
4611 *Format in which to write auto-save files.
|
|
|
4612 Should be a list of symbols naming formats that are defined in `format-alist'.
|
|
|
4613 If it is t, which is the default, auto-save files are written in the
|
|
|
4614 same format as a regular save would use.
|
|
|
4615 */ );
|
|
|
4616 Vauto_save_file_format = Qt;
|
|
|
4617
|
|
|
4618 DEFVAR_LISP ("file-name-handler-alist", &Vfile_name_handler_alist /*
|
|
|
4619 *Alist of elements (REGEXP . HANDLER) for file names handled specially.
|
|
|
4620 If a file name matches REGEXP, then all I/O on that file is done by calling
|
|
|
4621 HANDLER.
|
|
|
4622
|
|
|
4623 The first argument given to HANDLER is the name of the I/O primitive
|
|
|
4624 to be handled; the remaining arguments are the arguments that were
|
|
|
4625 passed to that primitive. For example, if you do
|
|
|
4626 (file-exists-p FILENAME)
|
|
|
4627 and FILENAME is handled by HANDLER, then HANDLER is called like this:
|
|
|
4628 (funcall HANDLER 'file-exists-p FILENAME)
|
|
|
4629 The function `find-file-name-handler' checks this list for a handler
|
|
|
4630 for its argument.
|
|
|
4631 */ );
|
|
|
4632 Vfile_name_handler_alist = Qnil;
|
|
|
4633
|
|
|
4634 DEFVAR_LISP ("after-insert-file-functions", &Vafter_insert_file_functions /*
|
|
|
4635 A list of functions to be called at the end of `insert-file-contents'.
|
|
|
4636 Each is passed one argument, the number of bytes inserted. It should return
|
|
|
4637 the new byte count, and leave point the same. If `insert-file-contents' is
|
|
|
4638 intercepted by a handler from `file-name-handler-alist', that handler is
|
|
|
4639 responsible for calling the after-insert-file-functions if appropriate.
|
|
|
4640 */ );
|
|
|
4641 Vafter_insert_file_functions = Qnil;
|
|
|
4642
|
|
|
4643 DEFVAR_LISP ("write-region-annotate-functions",
|
|
|
4644 &Vwrite_region_annotate_functions /*
|
|
|
4645 A list of functions to be called at the start of `write-region'.
|
|
183
|
4646 Each is passed two arguments, START and END, as for `write-region'.
|
|
0
|
4647 It should return a list of pairs (POSITION . STRING) of strings to be
|
|
|
4648 effectively inserted at the specified positions of the file being written
|
|
|
4649 \(1 means to insert before the first byte written). The POSITIONs must be
|
|
|
4650 sorted into increasing order. If there are several functions in the list,
|
|
|
4651 the several lists are merged destructively.
|
|
|
4652 */ );
|
|
|
4653 Vwrite_region_annotate_functions = Qnil;
|
|
|
4654
|
|
|
4655 DEFVAR_LISP ("write-region-annotations-so-far",
|
|
|
4656 &Vwrite_region_annotations_so_far /*
|
|
|
4657 When an annotation function is called, this holds the previous annotations.
|
|
|
4658 These are the annotations made by other annotation functions
|
|
|
4659 that were already called. See also `write-region-annotate-functions'.
|
|
|
4660 */ );
|
|
|
4661 Vwrite_region_annotations_so_far = Qnil;
|
|
|
4662
|
|
|
4663 DEFVAR_LISP ("inhibit-file-name-handlers", &Vinhibit_file_name_handlers /*
|
|
|
4664 A list of file name handlers that temporarily should not be used.
|
|
|
4665 This applies only to the operation `inhibit-file-name-operation'.
|
|
|
4666 */ );
|
|
|
4667 Vinhibit_file_name_handlers = Qnil;
|
|
|
4668
|
|
|
4669 DEFVAR_LISP ("inhibit-file-name-operation", &Vinhibit_file_name_operation /*
|
|
|
4670 The operation for which `inhibit-file-name-handlers' is applicable.
|
|
|
4671 */ );
|
|
|
4672 Vinhibit_file_name_operation = Qnil;
|
|
|
4673
|
|
|
4674 DEFVAR_LISP ("auto-save-list-file-name", &Vauto_save_list_file_name /*
|
|
|
4675 File name in which we write a list of all auto save file names.
|
|
|
4676 */ );
|
|
|
4677 Vauto_save_list_file_name = Qnil;
|
|
|
4678
|
|
|
4679 DEFVAR_BOOL ("disable-auto-save-when-buffer-shrinks",
|
|
|
4680 &disable_auto_save_when_buffer_shrinks /*
|
|
|
4681 If non-nil, auto-saving is disabled when a buffer shrinks too much.
|
|
|
4682 This is to prevent you from losing your edits if you accidentally
|
|
|
4683 delete a large chunk of the buffer and don't notice it until too late.
|
|
|
4684 Saving the buffer normally turns auto-save back on.
|
|
|
4685 */ );
|
|
|
4686 disable_auto_save_when_buffer_shrinks = 1;
|
|
235
|
4687
|
|
211
|
4688 DEFVAR_LISP ("directory-sep-char", &Vdirectory_sep_char /*
|
|
|
4689 *Directory separator character for built-in functions that return file names.
|
|
|
4690 The value should be either ?/ or ?\\ (any other value is treated as ?\\).
|
|
|
4691 This variable affects the built-in functions only on Windows,
|
|
|
4692 on other platforms, it is initialized so that Lisp code can find out
|
|
|
4693 what the normal separator is.
|
|
|
4694 */ );
|
|
235
|
4695 Vdirectory_sep_char = make_char('/');
|
|
|
4696
|
|
|
4697 #ifdef DOS_NT
|
|
211
|
4698 DEFVAR_LISP ("insert-file-contents-allow-replace", &Vinsert_file_contents_allow_replace /*
|
|
|
4699 *Allow REPLACE option of insert-file-contents to preserve markers.
|
|
|
4700 If non-nil, the REPLACE option works as described, preserving markers.
|
|
|
4701 If nil, the REPLACE option is implemented by deleting the visible region
|
|
|
4702 then inserting the file contents as if REPLACE was nil.
|
|
|
4703
|
|
|
4704 This option is only meaningful on Windows.
|
|
|
4705 */ );
|
|
|
4706 Vinsert_file_contents_allow_replace = Qt;
|
|
|
4707 #endif
|
|
0
|
4708 }
|
