|
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. */
|
|
|
23
|
|
|
24 #include <config.h>
|
|
|
25 #include "lisp.h"
|
|
|
26
|
|
|
27 #include "buffer.h"
|
|
|
28 #include "events.h"
|
|
|
29 #include "frame.h"
|
|
|
30 #include "insdel.h"
|
|
|
31 #include "lstream.h"
|
|
|
32 #include "redisplay.h"
|
|
|
33 #include "sysdep.h"
|
|
|
34 #include "window.h" /* minibuf_level */
|
|
|
35
|
|
2
|
36 #ifdef HAVE_LIBGEN_H /* Must come before sysfile.h */
|
|
|
37 #include <libgen.h>
|
|
|
38 #endif
|
|
0
|
39 #include "sysfile.h"
|
|
|
40 #include "sysproc.h"
|
|
|
41 #include "syspwd.h"
|
|
|
42 #include "systime.h"
|
|
|
43 #include "sysdir.h"
|
|
|
44
|
|
|
45 #ifdef HPUX
|
|
|
46 #include <netio.h>
|
|
|
47 #ifdef HPUX_PRE_8_0
|
|
|
48 #include <errnet.h>
|
|
|
49 #endif
|
|
|
50 #endif
|
|
|
51
|
|
|
52 /* Nonzero during writing of auto-save files */
|
|
|
53 static int auto_saving;
|
|
|
54
|
|
|
55 /* Set by auto_save_1 to mode of original file so Fwrite_region_internal
|
|
|
56 will create a new file with the same mode as the original */
|
|
|
57 static int auto_save_mode_bits;
|
|
|
58
|
|
|
59 /* Alist of elements (REGEXP . HANDLER) for file names
|
|
|
60 whose I/O is done with a special handler. */
|
|
|
61 Lisp_Object Vfile_name_handler_alist;
|
|
|
62
|
|
|
63 /* Format for auto-save files */
|
|
|
64 Lisp_Object Vauto_save_file_format;
|
|
|
65
|
|
|
66 /* Lisp functions for translating file formats */
|
|
|
67 Lisp_Object Qformat_decode, Qformat_annotate_function;
|
|
|
68
|
|
|
69 /* Functions to be called to process text properties in inserted file. */
|
|
|
70 Lisp_Object Vafter_insert_file_functions;
|
|
|
71
|
|
|
72 /* Functions to be called to create text property annotations for file. */
|
|
|
73 Lisp_Object Vwrite_region_annotate_functions;
|
|
|
74
|
|
|
75 /* During build_annotations, each time an annotation function is called,
|
|
|
76 this holds the annotations made by the previous functions. */
|
|
|
77 Lisp_Object Vwrite_region_annotations_so_far;
|
|
|
78
|
|
|
79 /* File name in which we write a list of all our auto save files. */
|
|
|
80 Lisp_Object Vauto_save_list_file_name;
|
|
|
81
|
|
|
82 /* On VMS, nonzero means write new files with record format stmlf.
|
|
|
83 Zero means use var format. */
|
|
|
84 int vms_stmlf_recfm;
|
|
|
85
|
|
|
86 int disable_auto_save_when_buffer_shrinks;
|
|
|
87
|
|
|
88 Lisp_Object Qfile_name_handler_alist;
|
|
|
89
|
|
|
90 /* These variables describe handlers that have "already" had a chance
|
|
|
91 to handle the current operation.
|
|
|
92
|
|
|
93 Vinhibit_file_name_handlers is a list of file name handlers.
|
|
|
94 Vinhibit_file_name_operation is the operation being handled.
|
|
|
95 If we try to handle that operation, we ignore those handlers. */
|
|
|
96
|
|
|
97 static Lisp_Object Vinhibit_file_name_handlers;
|
|
|
98 static Lisp_Object Vinhibit_file_name_operation;
|
|
|
99
|
|
|
100 Lisp_Object Qfile_error, Qfile_already_exists;
|
|
|
101
|
|
|
102 Lisp_Object Qauto_save_hook;
|
|
|
103 Lisp_Object Qauto_save_error;
|
|
|
104 Lisp_Object Qauto_saving;
|
|
|
105
|
|
|
106 Lisp_Object Qcar_less_than_car;
|
|
|
107
|
|
|
108 Lisp_Object Qcompute_buffer_file_truename;
|
|
|
109
|
|
|
110 /* signal a file error when errno contains a meaningful value. */
|
|
|
111
|
|
|
112 DOESNT_RETURN
|
|
|
113 report_file_error (CONST char *string, Lisp_Object data)
|
|
|
114 {
|
|
|
115 /* mrb: #### Needs to be fixed at a lower level; errstring needs to
|
|
|
116 be MULEized. The following at least prevents a crash... */
|
|
|
117 Lisp_Object errstring = build_ext_string (strerror (errno), FORMAT_BINARY);
|
|
|
118
|
|
|
119 /* System error messages are capitalized. Downcase the initial
|
|
|
120 unless it is followed by a slash. */
|
|
|
121 if (string_char (XSTRING (errstring), 1) != '/')
|
|
|
122 set_string_char (XSTRING (errstring), 0,
|
|
|
123 DOWNCASE (current_buffer,
|
|
|
124 string_char (XSTRING (errstring), 0)));
|
|
|
125
|
|
|
126 signal_error (Qfile_error,
|
|
|
127 Fcons (build_translated_string (string),
|
|
|
128 Fcons (errstring, data)));
|
|
|
129 }
|
|
|
130
|
|
|
131 void
|
|
|
132 maybe_report_file_error (CONST char *string, Lisp_Object data,
|
|
|
133 Lisp_Object class, Error_behavior errb)
|
|
|
134 {
|
|
|
135 Lisp_Object errstring;
|
|
|
136
|
|
|
137 /* Optimization: */
|
|
|
138 if (ERRB_EQ (errb, ERROR_ME_NOT))
|
|
|
139 return;
|
|
|
140
|
|
|
141 errstring = build_string (strerror (errno));
|
|
|
142
|
|
|
143 /* System error messages are capitalized. Downcase the initial
|
|
|
144 unless it is followed by a slash. */
|
|
|
145 if (string_char (XSTRING (errstring), 1) != '/')
|
|
|
146 set_string_char (XSTRING (errstring), 0,
|
|
|
147 DOWNCASE (current_buffer,
|
|
|
148 string_char (XSTRING (errstring), 0)));
|
|
|
149
|
|
|
150 maybe_signal_error (Qfile_error,
|
|
|
151 Fcons (build_translated_string (string),
|
|
|
152 Fcons (errstring, data)),
|
|
|
153 class, errb);
|
|
|
154 }
|
|
|
155
|
|
|
156 /* signal a file error when errno does not contain a meaningful value. */
|
|
|
157
|
|
|
158 DOESNT_RETURN
|
|
|
159 signal_file_error (CONST char *string, Lisp_Object data)
|
|
|
160 {
|
|
|
161 signal_error (Qfile_error,
|
|
|
162 list2 (build_translated_string (string), data));
|
|
|
163 }
|
|
|
164
|
|
|
165 void
|
|
|
166 maybe_signal_file_error (CONST char *string, Lisp_Object data,
|
|
|
167 Lisp_Object class, Error_behavior errb)
|
|
|
168 {
|
|
|
169 /* Optimization: */
|
|
|
170 if (ERRB_EQ (errb, ERROR_ME_NOT))
|
|
|
171 return;
|
|
|
172 maybe_signal_error (Qfile_error,
|
|
|
173 list2 (build_translated_string (string), data),
|
|
|
174 class, errb);
|
|
|
175 }
|
|
|
176
|
|
|
177 DOESNT_RETURN
|
|
|
178 signal_double_file_error (CONST char *string1, CONST char *string2,
|
|
|
179 Lisp_Object data)
|
|
|
180 {
|
|
|
181 signal_error (Qfile_error,
|
|
|
182 list3 (build_translated_string (string1),
|
|
|
183 build_translated_string (string2),
|
|
|
184 data));
|
|
|
185 }
|
|
|
186
|
|
|
187 void
|
|
|
188 maybe_signal_double_file_error (CONST char *string1, CONST char *string2,
|
|
|
189 Lisp_Object data, Lisp_Object class,
|
|
|
190 Error_behavior errb)
|
|
|
191 {
|
|
|
192 /* Optimization: */
|
|
|
193 if (ERRB_EQ (errb, ERROR_ME_NOT))
|
|
|
194 return;
|
|
|
195 maybe_signal_error (Qfile_error,
|
|
|
196 list3 (build_translated_string (string1),
|
|
|
197 build_translated_string (string2),
|
|
|
198 data),
|
|
|
199 class, errb);
|
|
|
200 }
|
|
|
201
|
|
|
202 DOESNT_RETURN
|
|
|
203 signal_double_file_error_2 (CONST char *string1, CONST char *string2,
|
|
|
204 Lisp_Object data1, Lisp_Object data2)
|
|
|
205 {
|
|
|
206 signal_error (Qfile_error,
|
|
|
207 list4 (build_translated_string (string1),
|
|
|
208 build_translated_string (string2),
|
|
|
209 data1, data2));
|
|
|
210 }
|
|
|
211
|
|
|
212 void
|
|
|
213 maybe_signal_double_file_error_2 (CONST char *string1, CONST char *string2,
|
|
|
214 Lisp_Object data1, Lisp_Object data2,
|
|
|
215 Lisp_Object class, Error_behavior errb)
|
|
|
216 {
|
|
|
217 /* Optimization: */
|
|
|
218 if (ERRB_EQ (errb, ERROR_ME_NOT))
|
|
|
219 return;
|
|
|
220 maybe_signal_error (Qfile_error,
|
|
|
221 list4 (build_translated_string (string1),
|
|
|
222 build_translated_string (string2),
|
|
|
223 data1, data2),
|
|
|
224 class, errb);
|
|
|
225 }
|
|
|
226
|
|
|
227 static Lisp_Object
|
|
|
228 close_file_unwind (Lisp_Object fd)
|
|
|
229 {
|
|
|
230 if (CONSP (fd))
|
|
|
231 {
|
|
|
232 if (INTP (XCAR (fd)))
|
|
|
233 close (XINT (XCAR (fd)));
|
|
|
234
|
|
|
235 free_cons (XCONS (fd));
|
|
|
236 }
|
|
|
237 else
|
|
|
238 close (XINT (fd));
|
|
|
239
|
|
|
240 return Qnil;
|
|
|
241 }
|
|
|
242
|
|
|
243 static Lisp_Object
|
|
|
244 close_stream_unwind (Lisp_Object stream)
|
|
|
245 {
|
|
|
246 Lstream_close (XLSTREAM (stream));
|
|
|
247 return Qnil;
|
|
|
248 }
|
|
|
249
|
|
|
250 /* Restore point, having saved it as a marker. */
|
|
|
251
|
|
|
252 static Lisp_Object
|
|
|
253 restore_point_unwind (Lisp_Object point_marker)
|
|
|
254 {
|
|
|
255 BUF_SET_PT (current_buffer, marker_position (point_marker));
|
|
|
256 return (Fset_marker (point_marker, Qnil, Qnil));
|
|
|
257 }
|
|
|
258
|
|
|
259 /* Versions of read() and write() that allow quitting out of the actual
|
|
|
260 I/O. We don't use immediate_quit (i.e. direct longjmp() out of the
|
|
|
261 signal handler) because that's way too losing.
|
|
|
262
|
|
|
263 (#### Actually, longjmp()ing out of the signal handler may not be
|
|
|
264 as losing as I thought. See sys_do_signal() in sysdep.c.)
|
|
|
265
|
|
|
266 Solaris include files declare the return value as ssize_t.
|
|
|
267 Is that standard? */
|
|
|
268 int
|
|
|
269 read_allowing_quit (int fildes, void *buf, unsigned int nbyte)
|
|
|
270 {
|
|
|
271 int nread;
|
|
|
272 QUIT;
|
|
|
273
|
|
|
274 nread = sys_read_1 (fildes, buf, nbyte, 1);
|
|
|
275 return nread;
|
|
|
276 }
|
|
|
277
|
|
|
278 int
|
|
|
279 write_allowing_quit (int fildes, CONST void *buf, unsigned int nbyte)
|
|
|
280 {
|
|
|
281 int nread;
|
|
|
282
|
|
|
283 QUIT;
|
|
|
284 nread = sys_write_1 (fildes, buf, nbyte, 1);
|
|
|
285 return nread;
|
|
|
286 }
|
|
|
287
|
|
|
288
|
|
|
289 Lisp_Object Qexpand_file_name;
|
|
|
290 Lisp_Object Qfile_truename;
|
|
|
291 Lisp_Object Qsubstitute_in_file_name;
|
|
|
292 Lisp_Object Qdirectory_file_name;
|
|
|
293 Lisp_Object Qfile_name_directory;
|
|
|
294 Lisp_Object Qfile_name_nondirectory;
|
|
|
295 Lisp_Object Qunhandled_file_name_directory;
|
|
|
296 Lisp_Object Qfile_name_as_directory;
|
|
|
297 Lisp_Object Qcopy_file;
|
|
|
298 Lisp_Object Qmake_directory_internal;
|
|
|
299 Lisp_Object Qdelete_directory;
|
|
|
300 Lisp_Object Qdelete_file;
|
|
|
301 Lisp_Object Qrename_file;
|
|
|
302 Lisp_Object Qadd_name_to_file;
|
|
|
303 Lisp_Object Qmake_symbolic_link;
|
|
|
304 Lisp_Object Qfile_exists_p;
|
|
|
305 Lisp_Object Qfile_executable_p;
|
|
|
306 Lisp_Object Qfile_readable_p;
|
|
|
307 Lisp_Object Qfile_symlink_p;
|
|
|
308 Lisp_Object Qfile_writable_p;
|
|
|
309 Lisp_Object Qfile_directory_p;
|
|
|
310 Lisp_Object Qfile_regular_p;
|
|
|
311 Lisp_Object Qfile_accessible_directory_p;
|
|
|
312 Lisp_Object Qfile_modes;
|
|
|
313 Lisp_Object Qset_file_modes;
|
|
|
314 Lisp_Object Qfile_newer_than_file_p;
|
|
|
315 Lisp_Object Qinsert_file_contents;
|
|
|
316 Lisp_Object Qwrite_region;
|
|
|
317 Lisp_Object Qverify_visited_file_modtime;
|
|
|
318 Lisp_Object Qset_visited_file_modtime;
|
|
|
319 Lisp_Object Qset_buffer_modtime;
|
|
|
320
|
|
|
321 /* If FILENAME is handled specially on account of its syntax,
|
|
|
322 return its handler function. Otherwise, return nil. */
|
|
|
323
|
|
20
|
324 DEFUN ("find-file-name-handler", Ffind_file_name_handler, 1, 2, 0, /*
|
|
0
|
325 Return FILENAME's handler function for OPERATION, if it has one.
|
|
|
326 Otherwise, return nil.
|
|
|
327 A file name is handled if one of the regular expressions in
|
|
|
328 `file-name-handler-alist' matches it.
|
|
|
329
|
|
|
330 If OPERATION equals `inhibit-file-name-operation', then we ignore
|
|
|
331 any handlers that are members of `inhibit-file-name-handlers',
|
|
|
332 but we still do run any other handlers. This lets handlers
|
|
|
333 use the standard functions without calling themselves recursively.
|
|
20
|
334 */
|
|
|
335 (filename, operation))
|
|
0
|
336 {
|
|
|
337 /* This function must not munge the match data. */
|
|
|
338 Lisp_Object chain, inhibited_handlers;
|
|
|
339
|
|
|
340 CHECK_STRING (filename);
|
|
|
341
|
|
|
342 if (EQ (operation, Vinhibit_file_name_operation))
|
|
|
343 inhibited_handlers = Vinhibit_file_name_handlers;
|
|
|
344 else
|
|
|
345 inhibited_handlers = Qnil;
|
|
|
346
|
|
|
347 for (chain = Vfile_name_handler_alist; CONSP (chain);
|
|
|
348 chain = XCDR (chain))
|
|
|
349 {
|
|
|
350 Lisp_Object elt = XCAR (chain);
|
|
|
351 if (CONSP (elt))
|
|
|
352 {
|
|
|
353 Lisp_Object string;
|
|
|
354 string = XCAR (elt);
|
|
|
355 if (STRINGP (string)
|
|
|
356 && (fast_lisp_string_match (string, filename) >= 0))
|
|
|
357 {
|
|
|
358 Lisp_Object handler = XCDR (elt);
|
|
|
359 if (NILP (Fmemq (handler, inhibited_handlers)))
|
|
|
360 return (handler);
|
|
|
361 }
|
|
|
362 }
|
|
|
363 QUIT;
|
|
|
364 }
|
|
|
365 return Qnil;
|
|
|
366 }
|
|
|
367
|
|
|
368 static Lisp_Object
|
|
|
369 call2_check_string (Lisp_Object fn, Lisp_Object arg0, Lisp_Object arg1)
|
|
|
370 {
|
|
|
371 /* This function can GC */
|
|
|
372 Lisp_Object result = call2 (fn, arg0, arg1);
|
|
|
373 CHECK_STRING (result);
|
|
|
374 return (result);
|
|
|
375 }
|
|
|
376
|
|
|
377 static Lisp_Object
|
|
|
378 call3_check_string (Lisp_Object fn, Lisp_Object arg0,
|
|
|
379 Lisp_Object arg1, Lisp_Object arg2)
|
|
|
380 {
|
|
|
381 /* This function can GC */
|
|
|
382 Lisp_Object result = call3 (fn, arg0, arg1, arg2);
|
|
|
383 CHECK_STRING (result);
|
|
|
384 return (result);
|
|
|
385 }
|
|
|
386
|
|
|
387
|
|
20
|
388 DEFUN ("file-name-directory", Ffile_name_directory, 1, 1, 0, /*
|
|
0
|
389 Return the directory component in file name NAME.
|
|
|
390 Return nil if NAME does not include a directory.
|
|
|
391 Otherwise return a directory spec.
|
|
|
392 Given a Unix syntax file name, returns a string ending in slash;
|
|
|
393 on VMS, perhaps instead a string ending in `:', `]' or `>'.
|
|
20
|
394 */
|
|
|
395 (file))
|
|
0
|
396 {
|
|
|
397 /* This function can GC */
|
|
|
398 Bufbyte *beg;
|
|
|
399 Bufbyte *p;
|
|
|
400 Lisp_Object handler;
|
|
|
401
|
|
|
402 CHECK_STRING (file);
|
|
|
403
|
|
|
404 /* If the file name has special constructs in it,
|
|
|
405 call the corresponding file handler. */
|
|
|
406 handler = Ffind_file_name_handler (file, Qfile_name_directory);
|
|
|
407 if (!NILP (handler))
|
|
|
408 {
|
|
|
409 Lisp_Object retval = call2 (handler, Qfile_name_directory,
|
|
|
410 file);
|
|
|
411
|
|
|
412 if (!NILP (retval))
|
|
|
413 CHECK_STRING (retval);
|
|
|
414 return retval;
|
|
|
415 }
|
|
|
416
|
|
|
417 #ifdef FILE_SYSTEM_CASE
|
|
|
418 file = FILE_SYSTEM_CASE (file);
|
|
|
419 #endif
|
|
16
|
420 beg = XSTRING_DATA (file);
|
|
|
421 p = beg + XSTRING_LENGTH (file);
|
|
0
|
422
|
|
|
423 while (p != beg && !IS_ANY_SEP (p[-1])
|
|
|
424 #ifdef VMS
|
|
|
425 && p[-1] != ':' && p[-1] != ']' && p[-1] != '>'
|
|
|
426 #endif /* VMS */
|
|
|
427 ) p--;
|
|
|
428
|
|
|
429 if (p == beg)
|
|
|
430 return Qnil;
|
|
|
431 #ifdef DOS_NT
|
|
|
432 /* Expansion of "c:" to drive and default directory. */
|
|
|
433 /* (NT does the right thing.) */
|
|
|
434 if (p == beg + 2 && beg[1] == ':')
|
|
|
435 {
|
|
|
436 int drive = (*beg) - 'a';
|
|
|
437 /* MAXPATHLEN+1 is guaranteed to be enough space for getdefdir. */
|
|
|
438 Bufbyte *res = (Bufbyte *) alloca (MAXPATHLEN + 5);
|
|
|
439 unsigned char *res1;
|
|
|
440 #ifdef WINDOWSNT
|
|
|
441 res1 = res;
|
|
|
442 /* The NT version places the drive letter at the beginning already. */
|
|
|
443 #else /* not WINDOWSNT */
|
|
|
444 /* On MSDOG we must put the drive letter in by hand. */
|
|
|
445 res1 = res + 2;
|
|
|
446 #endif /* not WINDOWSNT */
|
|
|
447 if (getdefdir (drive + 1, res))
|
|
|
448 {
|
|
|
449 #ifdef MSDOS
|
|
|
450 res[0] = drive + 'a';
|
|
|
451 res[1] = ':';
|
|
|
452 #endif /* MSDOS */
|
|
|
453 if (IS_DIRECTORY_SEP (res[strlen ((char *) res) - 1]))
|
|
|
454 strcat ((char *) res, "/");
|
|
|
455 beg = res;
|
|
|
456 p = beg + strlen ((char *) beg);
|
|
|
457 }
|
|
|
458 }
|
|
|
459 #endif /* DOS_NT */
|
|
|
460 return make_string (beg, p - beg);
|
|
|
461 }
|
|
|
462
|
|
20
|
463 DEFUN ("file-name-nondirectory", Ffile_name_nondirectory, 1, 1, 0, /*
|
|
0
|
464 Return file name NAME sans its directory.
|
|
|
465 For example, in a Unix-syntax file name,
|
|
|
466 this is everything after the last slash,
|
|
|
467 or the entire name if it contains no slash.
|
|
20
|
468 */
|
|
|
469 (file))
|
|
0
|
470 {
|
|
|
471 /* This function can GC */
|
|
|
472 Bufbyte *beg, *p, *end;
|
|
|
473 Lisp_Object handler;
|
|
|
474
|
|
|
475 CHECK_STRING (file);
|
|
|
476
|
|
|
477 /* If the file name has special constructs in it,
|
|
|
478 call the corresponding file handler. */
|
|
|
479 handler = Ffind_file_name_handler (file, Qfile_name_nondirectory);
|
|
|
480 if (!NILP (handler))
|
|
|
481 return (call2_check_string (handler, Qfile_name_nondirectory,
|
|
|
482 file));
|
|
|
483
|
|
16
|
484 beg = XSTRING_DATA (file);
|
|
|
485 end = p = beg + XSTRING_LENGTH (file);
|
|
0
|
486
|
|
|
487 while (p != beg && !IS_ANY_SEP (p[-1])
|
|
|
488 #ifdef VMS
|
|
|
489 && p[-1] != ':' && p[-1] != ']' && p[-1] != '>'
|
|
|
490 #endif /* VMS */
|
|
|
491 ) p--;
|
|
|
492
|
|
|
493 return make_string (p, end - p);
|
|
|
494 }
|
|
|
495
|
|
20
|
496 DEFUN ("unhandled-file-name-directory", Funhandled_file_name_directory, 1, 1, 0, /*
|
|
0
|
497 Return a directly usable directory name somehow associated with FILENAME.
|
|
|
498 A `directly usable' directory name is one that may be used without the
|
|
|
499 intervention of any file handler.
|
|
|
500 If FILENAME is a directly usable file itself, return
|
|
|
501 (file-name-directory FILENAME).
|
|
|
502 The `call-process' and `start-process' functions use this function to
|
|
|
503 get a current directory to run processes in.
|
|
20
|
504 */
|
|
|
505 (filename))
|
|
0
|
506 {
|
|
|
507 /* This function can GC */
|
|
|
508 Lisp_Object handler;
|
|
|
509
|
|
|
510 /* If the file name has special constructs in it,
|
|
|
511 call the corresponding file handler. */
|
|
|
512 handler = Ffind_file_name_handler (filename, Qunhandled_file_name_directory);
|
|
|
513 if (!NILP (handler))
|
|
|
514 return call2 (handler, Qunhandled_file_name_directory,
|
|
|
515 filename);
|
|
|
516
|
|
|
517 return Ffile_name_directory (filename);
|
|
|
518 }
|
|
|
519
|
|
|
520
|
|
|
521 static char *
|
|
|
522 file_name_as_directory (char *out, char *in)
|
|
|
523 {
|
|
|
524 int size = strlen (in) - 1;
|
|
|
525
|
|
|
526 strcpy (out, in);
|
|
|
527
|
|
|
528 #ifdef VMS
|
|
|
529 /* Is it already a directory string? */
|
|
|
530 if (in[size] == ':' || in[size] == ']' || in[size] == '>')
|
|
|
531 return out;
|
|
|
532 /* Is it a VMS directory file name? If so, hack VMS syntax. */
|
|
|
533 else if (! strchr (in, '/')
|
|
|
534 && ((size > 3 && ! strcmp (&in[size - 3], ".DIR"))
|
|
|
535 || (size > 3 && ! strcmp (&in[size - 3], ".dir"))
|
|
|
536 || (size > 5 && (! strncmp (&in[size - 5], ".DIR", 4)
|
|
|
537 || ! strncmp (&in[size - 5], ".dir", 4))
|
|
|
538 && (in[size - 1] == '.' || in[size - 1] == ';')
|
|
|
539 && in[size] == '1')))
|
|
|
540 {
|
|
|
541 char *p, *dot;
|
|
|
542 char brack;
|
|
|
543
|
|
|
544 /* x.dir -> [.x]
|
|
|
545 dir:x.dir --> dir:[x]
|
|
|
546 dir:[x]y.dir --> dir:[x.y] */
|
|
|
547 p = in + size;
|
|
|
548 while (p != in && *p != ':' && *p != '>' && *p != ']') p--;
|
|
|
549 if (p != in)
|
|
|
550 {
|
|
|
551 strncpy (out, in, p - in);
|
|
|
552 out[p - in] = '\0';
|
|
|
553 if (*p == ':')
|
|
|
554 {
|
|
|
555 brack = ']';
|
|
|
556 strcat (out, ":[");
|
|
|
557 }
|
|
|
558 else
|
|
|
559 {
|
|
|
560 brack = *p;
|
|
|
561 strcat (out, ".");
|
|
|
562 }
|
|
|
563 p++;
|
|
|
564 }
|
|
|
565 else
|
|
|
566 {
|
|
|
567 brack = ']';
|
|
|
568 strcpy (out, "[.");
|
|
|
569 }
|
|
|
570 dot = strchr (p, '.');
|
|
|
571 if (dot)
|
|
|
572 {
|
|
|
573 /* blindly remove any extension */
|
|
|
574 size = strlen (out) + (dot - p);
|
|
|
575 strncat (out, p, dot - p);
|
|
|
576 }
|
|
|
577 else
|
|
|
578 {
|
|
|
579 strcat (out, p);
|
|
|
580 size = strlen (out);
|
|
|
581 }
|
|
|
582 out[size++] = brack;
|
|
|
583 out[size] = '\0';
|
|
|
584 }
|
|
|
585 #else /* not VMS */
|
|
|
586 /* For Unix syntax, Append a slash if necessary */
|
|
|
587 if (!IS_ANY_SEP (out[size]))
|
|
|
588 {
|
|
|
589 out[size + 1] = DIRECTORY_SEP;
|
|
|
590 out[size + 2] = '\0';
|
|
|
591 }
|
|
|
592 #endif /* not VMS */
|
|
|
593 return out;
|
|
|
594 }
|
|
|
595
|
|
20
|
596 DEFUN ("file-name-as-directory", Ffile_name_as_directory, 1, 1, 0, /*
|
|
0
|
597 Return a string representing file FILENAME interpreted as a directory.
|
|
|
598 This operation exists because a directory is also a file, but its name as
|
|
|
599 a directory is different from its name as a file.
|
|
|
600 The result can be used as the value of `default-directory'
|
|
|
601 or passed as second argument to `expand-file-name'.
|
|
|
602 For a Unix-syntax file name, just appends a slash.
|
|
|
603 On VMS, converts \"[X]FOO.DIR\" to \"[X.FOO]\", etc.
|
|
20
|
604 */
|
|
|
605 (file))
|
|
0
|
606 {
|
|
|
607 /* This function can GC */
|
|
|
608 char *buf;
|
|
|
609 Lisp_Object handler;
|
|
|
610
|
|
|
611 CHECK_STRING (file);
|
|
|
612
|
|
|
613 /* If the file name has special constructs in it,
|
|
|
614 call the corresponding file handler. */
|
|
|
615 handler = Ffind_file_name_handler (file, Qfile_name_as_directory);
|
|
|
616 if (!NILP (handler))
|
|
|
617 return (call2_check_string (handler, Qfile_name_as_directory,
|
|
|
618 file));
|
|
|
619
|
|
16
|
620 buf = (char *) alloca (XSTRING_LENGTH (file) + 10);
|
|
0
|
621 return build_string (file_name_as_directory
|
|
16
|
622 (buf, (char *) XSTRING_DATA (file)));
|
|
0
|
623 }
|
|
|
624
|
|
|
625 /*
|
|
|
626 * Convert from directory name to filename.
|
|
|
627 * On VMS:
|
|
|
628 * xyzzy:[mukesh.emacs] => xyzzy:[mukesh]emacs.dir.1
|
|
|
629 * xyzzy:[mukesh] => xyzzy:[000000]mukesh.dir.1
|
|
|
630 * On UNIX, it's simple: just make sure there is a terminating /
|
|
|
631
|
|
|
632 * Value is nonzero if the string output is different from the input.
|
|
|
633 */
|
|
|
634
|
|
|
635 static int
|
|
|
636 directory_file_name (CONST char *src, char *dst)
|
|
|
637 {
|
|
|
638 long slen;
|
|
|
639 #ifdef VMS
|
|
|
640 long rlen;
|
|
|
641 char * ptr, * rptr;
|
|
|
642 char bracket;
|
|
|
643 struct FAB fab = cc$rms_fab;
|
|
|
644 struct NAM nam = cc$rms_nam;
|
|
|
645 char esa[NAM$C_MAXRSS];
|
|
|
646 #endif /* VMS */
|
|
|
647
|
|
|
648 slen = strlen (src);
|
|
|
649 #ifdef VMS
|
|
|
650 if (! strchr (src, '/')
|
|
|
651 && (src[slen - 1] == ']'
|
|
|
652 || src[slen - 1] == ':'
|
|
|
653 || src[slen - 1] == '>'))
|
|
|
654 {
|
|
|
655 /* VMS style - convert [x.y.z] to [x.y]z, [x] to [000000]x */
|
|
|
656 fab.fab$l_fna = src;
|
|
|
657 fab.fab$b_fns = slen;
|
|
|
658 fab.fab$l_nam = &nam;
|
|
|
659 fab.fab$l_fop = FAB$M_NAM;
|
|
|
660
|
|
|
661 nam.nam$l_esa = esa;
|
|
|
662 nam.nam$b_ess = sizeof esa;
|
|
|
663 nam.nam$b_nop |= NAM$M_SYNCHK;
|
|
|
664
|
|
|
665 /* We call SYS$PARSE to handle such things as [--] for us. */
|
|
|
666 if (SYS$PARSE(&fab, 0, 0) == RMS$_NORMAL)
|
|
|
667 {
|
|
|
668 slen = nam.nam$b_esl;
|
|
|
669 if (esa[slen - 1] == ';' && esa[slen - 2] == '.')
|
|
|
670 slen -= 2;
|
|
|
671 esa[slen] = '\0';
|
|
|
672 src = esa;
|
|
|
673 }
|
|
|
674 if (src[slen - 1] != ']' && src[slen - 1] != '>')
|
|
|
675 {
|
|
|
676 /* what about when we have logical_name:???? */
|
|
|
677 if (src[slen - 1] == ':')
|
|
|
678 { /* Xlate logical name and see what we get */
|
|
|
679 ptr = strcpy (dst, src); /* upper case for getenv */
|
|
|
680 while (*ptr)
|
|
|
681 {
|
|
|
682 *ptr = toupper ((unsigned char) *ptr);
|
|
|
683 ptr++;
|
|
|
684 }
|
|
|
685 dst[slen - 1] = 0; /* remove colon */
|
|
|
686 if (!(src = egetenv (dst)))
|
|
|
687 return 0;
|
|
|
688 /* should we jump to the beginning of this procedure?
|
|
|
689 Good points: allows us to use logical names that xlate
|
|
|
690 to Unix names,
|
|
|
691 Bad points: can be a problem if we just translated to a device
|
|
|
692 name...
|
|
|
693 For now, I'll punt and always expect VMS names, and hope for
|
|
|
694 the best! */
|
|
|
695 slen = strlen (src);
|
|
|
696 if (src[slen - 1] != ']' && src[slen - 1] != '>')
|
|
|
697 { /* no recursion here! */
|
|
|
698 strcpy (dst, src);
|
|
|
699 return 0;
|
|
|
700 }
|
|
|
701 }
|
|
|
702 else
|
|
|
703 { /* not a directory spec */
|
|
|
704 strcpy (dst, src);
|
|
|
705 return 0;
|
|
|
706 }
|
|
|
707 }
|
|
|
708 bracket = src[slen - 1];
|
|
|
709
|
|
|
710 /* If bracket is ']' or '>', bracket - 2 is the corresponding
|
|
|
711 opening bracket. */
|
|
|
712 ptr = strchr (src, bracket - 2);
|
|
|
713 if (ptr == 0)
|
|
|
714 { /* no opening bracket */
|
|
|
715 strcpy (dst, src);
|
|
|
716 return 0;
|
|
|
717 }
|
|
|
718 if (!(rptr = strrchr (src, '.')))
|
|
|
719 rptr = ptr;
|
|
|
720 slen = rptr - src;
|
|
|
721 strncpy (dst, src, slen);
|
|
|
722 dst[slen] = '\0';
|
|
|
723 if (*rptr == '.')
|
|
|
724 {
|
|
|
725 dst[slen++] = bracket;
|
|
|
726 dst[slen] = '\0';
|
|
|
727 }
|
|
|
728 else
|
|
|
729 {
|
|
|
730 /* If we have the top-level of a rooted directory (i.e. xx:[000000]),
|
|
|
731 then translate the device and recurse. */
|
|
|
732 if (dst[slen - 1] == ':'
|
|
|
733 && dst[slen - 2] != ':' /* skip decnet nodes */
|
|
|
734 && strcmp(src + slen, "[000000]") == 0)
|
|
|
735 {
|
|
|
736 dst[slen - 1] = '\0';
|
|
|
737 if ((ptr = egetenv (dst))
|
|
|
738 && (rlen = strlen (ptr) - 1) > 0
|
|
|
739 && (ptr[rlen] == ']' || ptr[rlen] == '>')
|
|
|
740 && ptr[rlen - 1] == '.')
|
|
|
741 {
|
|
|
742 char * buf = (char *) alloca (strlen (ptr) + 1);
|
|
|
743 strcpy (buf, ptr);
|
|
|
744 buf[rlen - 1] = ']';
|
|
|
745 buf[rlen] = '\0';
|
|
|
746 return directory_file_name (buf, dst);
|
|
|
747 }
|
|
|
748 else
|
|
|
749 dst[slen - 1] = ':';
|
|
|
750 }
|
|
|
751 strcat (dst, "[000000]");
|
|
|
752 slen += 8;
|
|
|
753 }
|
|
|
754 rptr++;
|
|
|
755 rlen = strlen (rptr) - 1;
|
|
|
756 strncat (dst, rptr, rlen);
|
|
|
757 dst[slen + rlen] = '\0';
|
|
|
758 strcat (dst, ".DIR.1");
|
|
|
759 return 1;
|
|
|
760 }
|
|
|
761 #endif /* VMS */
|
|
|
762 /* Process as Unix format: just remove any final slash.
|
|
|
763 But leave "/" unchanged; do not change it to "". */
|
|
|
764 strcpy (dst, src);
|
|
|
765 #ifdef APOLLO
|
|
|
766 /* Handle // as root for apollo's. */
|
|
|
767 if ((slen > 2 && dst[slen - 1] == '/')
|
|
|
768 || (slen > 1 && dst[0] != '/' && dst[slen - 1] == '/'))
|
|
|
769 dst[slen - 1] = 0;
|
|
|
770 #else
|
|
|
771 if (slen > 1
|
|
|
772 && IS_DIRECTORY_SEP (dst[slen - 1])
|
|
|
773 #ifdef DOS_NT
|
|
|
774 && !IS_ANY_SEP (dst[slen - 2])
|
|
|
775 #endif
|
|
|
776 )
|
|
|
777 dst[slen - 1] = 0;
|
|
|
778 #endif
|
|
|
779 return 1;
|
|
|
780 }
|
|
|
781
|
|
20
|
782 DEFUN ("directory-file-name", Fdirectory_file_name, 1, 1, 0, /*
|
|
0
|
783 Return the file name of the directory named DIR.
|
|
|
784 This is the name of the file that holds the data for the directory DIR.
|
|
|
785 This operation exists because a directory is also a file, but its name as
|
|
|
786 a directory is different from its name as a file.
|
|
|
787 In Unix-syntax, this function just removes the final slash.
|
|
|
788 On VMS, given a VMS-syntax directory name such as \"[X.Y]\",
|
|
|
789 it returns a file name such as \"[X]Y.DIR.1\".
|
|
20
|
790 */
|
|
|
791 (directory))
|
|
0
|
792 {
|
|
|
793 /* This function can GC */
|
|
|
794 char *buf;
|
|
|
795 Lisp_Object handler;
|
|
|
796
|
|
|
797 CHECK_STRING (directory);
|
|
|
798
|
|
|
799 #if 0 /* #### WTF? */
|
|
|
800 if (NILP (directory))
|
|
|
801 return Qnil;
|
|
|
802 #endif
|
|
|
803
|
|
|
804 /* If the file name has special constructs in it,
|
|
|
805 call the corresponding file handler. */
|
|
|
806 handler = Ffind_file_name_handler (directory, Qdirectory_file_name);
|
|
|
807 if (!NILP (handler))
|
|
|
808 return (call2_check_string (handler, Qdirectory_file_name,
|
|
|
809 directory));
|
|
|
810 #ifdef VMS
|
|
|
811 /* 20 extra chars is insufficient for VMS, since we might perform a
|
|
|
812 logical name translation. an equivalence string can be up to 255
|
|
|
813 chars long, so grab that much extra space... - sss */
|
|
16
|
814 buf = (char *) alloca (XSTRING_LENGTH (directory) + 20 + 255);
|
|
0
|
815 #else
|
|
16
|
816 buf = (char *) alloca (XSTRING_LENGTH (directory) + 20);
|
|
0
|
817 #endif
|
|
16
|
818 directory_file_name ((char *) XSTRING_DATA (directory), buf);
|
|
0
|
819 return build_string (buf);
|
|
|
820 }
|
|
|
821
|
|
20
|
822 DEFUN ("make-temp-name", Fmake_temp_name, 1, 1, 0, /*
|
|
0
|
823 Generate temporary file name (string) starting with PREFIX (a string).
|
|
|
824 The Emacs process number forms part of the result,
|
|
|
825 so there is no danger of generating a name being used by another process.
|
|
20
|
826 */
|
|
|
827 (prefix))
|
|
0
|
828 {
|
|
|
829 CONST char suffix[] = "XXXXXX";
|
|
|
830 Bufbyte *data;
|
|
|
831 Bytecount len;
|
|
|
832 Lisp_Object val;
|
|
|
833
|
|
|
834 CHECK_STRING (prefix);
|
|
16
|
835 len = XSTRING_LENGTH (prefix);
|
|
0
|
836 val = make_uninit_string (len + countof (suffix) - 1);
|
|
16
|
837 data = XSTRING_DATA (val);
|
|
|
838 memcpy (data, XSTRING_DATA (prefix), len);
|
|
0
|
839 memcpy (data + len, suffix, countof (suffix));
|
|
|
840 /* !!#### does mktemp() Mule-encapsulate? */
|
|
|
841 mktemp ((char *) data);
|
|
|
842
|
|
|
843 return val;
|
|
|
844 }
|
|
|
845
|
|
20
|
846 DEFUN ("expand-file-name", Fexpand_file_name, 1, 2, 0, /*
|
|
0
|
847 Convert FILENAME to absolute, and canonicalize it.
|
|
|
848 Second arg DEFAULT is directory to start with if FILENAME is relative
|
|
|
849 (does not start with slash); if DEFAULT is nil or missing,
|
|
|
850 the current buffer's value of default-directory is used.
|
|
|
851 Path components that are `.' are removed, and
|
|
|
852 path components followed by `..' are removed, along with the `..' itself;
|
|
|
853 note that these simplifications are done without checking the resulting
|
|
|
854 paths in the file system.
|
|
|
855 An initial `~/' expands to your home directory.
|
|
|
856 An initial `~USER/' expands to USER's home directory.
|
|
|
857 See also the function `substitute-in-file-name'.
|
|
20
|
858 */
|
|
|
859 (name, defalt))
|
|
0
|
860 {
|
|
|
861 /* This function can GC */
|
|
|
862 Bufbyte *nm;
|
|
|
863
|
|
|
864 Bufbyte *newdir, *p, *o;
|
|
|
865 int tlen;
|
|
|
866 Bufbyte *target;
|
|
|
867 struct passwd *pw;
|
|
|
868 #ifdef VMS
|
|
|
869 Bufbyte * colon = 0;
|
|
|
870 Bufbyte * close = 0;
|
|
|
871 Bufbyte * slash = 0;
|
|
|
872 Bufbyte * brack = 0;
|
|
|
873 int lbrack = 0, rbrack = 0;
|
|
|
874 int dots = 0;
|
|
|
875 #endif /* VMS */
|
|
|
876 #ifdef DOS_NT
|
|
|
877 /* Demacs 1.1.2 91/10/20 Manabu Higashida */
|
|
|
878 int drive = -1;
|
|
|
879 int relpath = 0;
|
|
|
880 Bufbyte *tmp, *defdir;
|
|
|
881 #endif /* DOS_NT */
|
|
|
882 Lisp_Object handler;
|
|
|
883
|
|
|
884 CHECK_STRING (name);
|
|
|
885
|
|
|
886 /* If the file name has special constructs in it,
|
|
|
887 call the corresponding file handler. */
|
|
|
888 handler = Ffind_file_name_handler (name, Qexpand_file_name);
|
|
|
889 if (!NILP (handler))
|
|
|
890 return (call3_check_string (handler, Qexpand_file_name, name,
|
|
|
891 defalt));
|
|
|
892
|
|
|
893 /* Use the buffer's default-directory if DEFALT is omitted. */
|
|
|
894 if (NILP (defalt))
|
|
|
895 defalt = current_buffer->directory;
|
|
|
896 if (NILP (defalt)) /* this should be a meaningful error */
|
|
|
897 {
|
|
|
898 /* #### If we had a minibuffer-only frame up then current_buffer
|
|
|
899 is likely to not have a directory setting. We should
|
|
|
900 probably redo things to make sure that current_buffer stays
|
|
|
901 set to something sensible. */
|
|
|
902 if (!preparing_for_armageddon)
|
|
|
903 signal_simple_error ("default-directory is not set",
|
|
|
904 make_buffer (current_buffer));
|
|
|
905 }
|
|
|
906 else
|
|
|
907 CHECK_STRING (defalt);
|
|
|
908
|
|
|
909 if (!NILP (defalt))
|
|
|
910 {
|
|
|
911 handler = Ffind_file_name_handler (defalt, Qexpand_file_name);
|
|
|
912 if (!NILP (handler))
|
|
|
913 return call3 (handler, Qexpand_file_name, name, defalt);
|
|
|
914 }
|
|
|
915
|
|
|
916 /* Make sure DEFALT is properly expanded.
|
|
|
917 It would be better to do this down below where we actually use
|
|
|
918 defalt. Unfortunately, calling Fexpand_file_name recursively
|
|
|
919 could invoke GC, and the strings might be relocated. This would
|
|
|
920 be annoying because we have pointers into strings lying around
|
|
|
921 that would need adjusting, and people would add new pointers to
|
|
|
922 the code and forget to adjust them, resulting in intermittent bugs.
|
|
|
923 Putting this call here avoids all that crud.
|
|
|
924
|
|
|
925 The EQ test avoids infinite recursion. */
|
|
|
926 if (! NILP (defalt) && !EQ (defalt, name)
|
|
|
927 /* This saves time in a common case. */
|
|
16
|
928 && ! (XSTRING_LENGTH (defalt) >= 3
|
|
|
929 && IS_DIRECTORY_SEP (XSTRING_BYTE (defalt, 0))
|
|
|
930 && IS_DEVICE_SEP (XSTRING_BYTE (defalt, 1))))
|
|
0
|
931 {
|
|
|
932 struct gcpro gcpro1;
|
|
|
933
|
|
|
934 GCPRO1 (name);
|
|
|
935 defalt = Fexpand_file_name (defalt, Qnil);
|
|
|
936 UNGCPRO;
|
|
|
937 }
|
|
|
938
|
|
|
939 #ifdef VMS
|
|
|
940 /* Filenames on VMS are always upper case. */
|
|
|
941 name = Fupcase (name, Fcurrent_buffer ());
|
|
|
942 #endif
|
|
|
943 #ifdef FILE_SYSTEM_CASE
|
|
|
944 name = FILE_SYSTEM_CASE (name);
|
|
|
945 #endif
|
|
|
946
|
|
16
|
947 nm = XSTRING_DATA (name);
|
|
0
|
948
|
|
|
949 #ifdef MSDOS
|
|
|
950 /* First map all backslashes to slashes. */
|
|
|
951 dostounix_filename (nm = strcpy (alloca (strlen (nm) + 1), nm));
|
|
|
952 #endif
|
|
|
953
|
|
|
954 #ifdef DOS_NT
|
|
|
955 /* Now strip drive name. */
|
|
|
956 {
|
|
|
957 Bufbyte *colon = strrchr (nm, ':');
|
|
|
958 if (colon)
|
|
|
959 if (nm == colon)
|
|
|
960 nm++;
|
|
|
961 else
|
|
|
962 {
|
|
|
963 drive = colon[-1];
|
|
|
964 nm = colon + 1;
|
|
|
965 if (!IS_DIRECTORY_SEP (*nm))
|
|
|
966 {
|
|
|
967 defdir = alloca (MAXPATHLEN + 1);
|
|
|
968 relpath = getdefdir (tolower (drive) - 'a' + 1, defdir);
|
|
|
969 }
|
|
|
970 }
|
|
|
971 }
|
|
|
972 #endif /* DOS_NT */
|
|
|
973
|
|
|
974 /* Handle // and /~ in middle of file name
|
|
|
975 by discarding everything through the first / of that sequence. */
|
|
|
976 p = nm;
|
|
|
977 while (*p)
|
|
|
978 {
|
|
|
979 /* Since we know the path is absolute, we can assume that each
|
|
|
980 element starts with a "/". */
|
|
|
981
|
|
|
982 /* "//" anywhere isn't necessarily hairy; we just start afresh
|
|
|
983 with the second slash. */
|
|
|
984 if (IS_DIRECTORY_SEP (p[0]) && IS_DIRECTORY_SEP (p[1])
|
|
|
985 #if defined (APOLLO) || defined (WINDOWSNT)
|
|
|
986 /* // at start of filename is meaningful on Apollo
|
|
|
987 and WindowsNT systems */
|
|
|
988 && nm != p
|
|
|
989 #endif /* APOLLO || WINDOWSNT */
|
|
|
990 )
|
|
|
991 nm = p + 1;
|
|
|
992
|
|
|
993 /* "~" is hairy as the start of any path element. */
|
|
|
994 if (IS_DIRECTORY_SEP (p[0]) && p[1] == '~')
|
|
|
995 nm = p + 1;
|
|
|
996
|
|
|
997 p++;
|
|
|
998 }
|
|
|
999
|
|
|
1000 /* If nm is absolute, flush ...// and detect /./ and /../.
|
|
|
1001 If no /./ or /../ we can return right away. */
|
|
|
1002 if (
|
|
|
1003 IS_DIRECTORY_SEP (nm[0])
|
|
|
1004 #ifdef VMS
|
|
|
1005 || strchr (nm, ':')
|
|
|
1006 #endif /* VMS */
|
|
|
1007 )
|
|
|
1008 {
|
|
|
1009 /* If it turns out that the filename we want to return is just a
|
|
|
1010 suffix of FILENAME, we don't need to go through and edit
|
|
|
1011 things; we just need to construct a new string using data
|
|
|
1012 starting at the middle of FILENAME. If we set lose to a
|
|
|
1013 non-zero value, that means we've discovered that we can't do
|
|
|
1014 that cool trick. */
|
|
|
1015 int lose = 0;
|
|
|
1016
|
|
|
1017 p = nm;
|
|
|
1018 while (*p)
|
|
|
1019 {
|
|
|
1020 /* Since we know the path is absolute, we can assume that each
|
|
|
1021 element starts with a "/". */
|
|
|
1022
|
|
|
1023 /* "." and ".." are hairy. */
|
|
|
1024 if (IS_DIRECTORY_SEP (p[0])
|
|
|
1025 && p[1] == '.'
|
|
|
1026 && (IS_DIRECTORY_SEP (p[2])
|
|
|
1027 || p[2] == 0
|
|
|
1028 || (p[2] == '.' && (IS_DIRECTORY_SEP (p[3])
|
|
|
1029 || p[3] == 0))))
|
|
|
1030 lose = 1;
|
|
|
1031 #ifdef VMS
|
|
|
1032 if (p[0] == '\\')
|
|
|
1033 lose = 1;
|
|
|
1034 if (p[0] == '/') {
|
|
|
1035 /* if dev:[dir]/, move nm to / */
|
|
|
1036 if (!slash && p > nm && (brack || colon)) {
|
|
|
1037 nm = (brack ? brack + 1 : colon + 1);
|
|
|
1038 lbrack = rbrack = 0;
|
|
|
1039 brack = 0;
|
|
|
1040 colon = 0;
|
|
|
1041 }
|
|
|
1042 slash = p;
|
|
|
1043 }
|
|
|
1044 if (p[0] == '-')
|
|
|
1045 #ifndef VMS4_4
|
|
|
1046 /* VMS pre V4.4,convert '-'s in filenames. */
|
|
|
1047 if (lbrack == rbrack)
|
|
|
1048 {
|
|
|
1049 if (dots < 2) /* this is to allow negative version numbers */
|
|
|
1050 p[0] = '_';
|
|
|
1051 }
|
|
|
1052 else
|
|
|
1053 #endif /* VMS4_4 */
|
|
|
1054 if (lbrack > rbrack &&
|
|
|
1055 ((p[-1] == '.' || p[-1] == '[' || p[-1] == '<') &&
|
|
|
1056 (p[1] == '.' || p[1] == ']' || p[1] == '>')))
|
|
|
1057 lose = 1;
|
|
|
1058 #ifndef VMS4_4
|
|
|
1059 else
|
|
|
1060 p[0] = '_';
|
|
|
1061 #endif /* VMS4_4 */
|
|
|
1062 /* count open brackets, reset close bracket pointer */
|
|
|
1063 if (p[0] == '[' || p[0] == '<')
|
|
|
1064 lbrack++, brack = 0;
|
|
|
1065 /* count close brackets, set close bracket pointer */
|
|
|
1066 if (p[0] == ']' || p[0] == '>')
|
|
|
1067 rbrack++, brack = p;
|
|
|
1068 /* detect ][ or >< */
|
|
|
1069 if ((p[0] == ']' || p[0] == '>') && (p[1] == '[' || p[1] == '<'))
|
|
|
1070 lose = 1;
|
|
|
1071 if ((p[0] == ':' || p[0] == ']' || p[0] == '>') && p[1] == '~')
|
|
|
1072 nm = p + 1, lose = 1;
|
|
|
1073 if (p[0] == ':' && (colon || slash))
|
|
|
1074 /* if dev1:[dir]dev2:, move nm to dev2: */
|
|
|
1075 if (brack)
|
|
|
1076 {
|
|
|
1077 nm = brack + 1;
|
|
|
1078 brack = 0;
|
|
|
1079 }
|
|
|
1080 /* if /pathname/dev:, move nm to dev: */
|
|
|
1081 else if (slash)
|
|
|
1082 nm = slash + 1;
|
|
|
1083 /* if node::dev:, move colon following dev */
|
|
|
1084 else if (colon && colon[-1] == ':')
|
|
|
1085 colon = p;
|
|
|
1086 /* if dev1:dev2:, move nm to dev2: */
|
|
|
1087 else if (colon && colon[-1] != ':')
|
|
|
1088 {
|
|
|
1089 nm = colon + 1;
|
|
|
1090 colon = 0;
|
|
|
1091 }
|
|
|
1092 if (p[0] == ':' && !colon)
|
|
|
1093 {
|
|
|
1094 if (p[1] == ':')
|
|
|
1095 p++;
|
|
|
1096 colon = p;
|
|
|
1097 }
|
|
|
1098 if (lbrack == rbrack)
|
|
|
1099 if (p[0] == ';')
|
|
|
1100 dots = 2;
|
|
|
1101 else if (p[0] == '.')
|
|
|
1102 dots++;
|
|
|
1103 #endif /* VMS */
|
|
|
1104 p++;
|
|
|
1105 }
|
|
|
1106 if (!lose)
|
|
|
1107 {
|
|
|
1108 #ifdef VMS
|
|
|
1109 if (strchr (nm, '/'))
|
|
|
1110 return build_string (sys_translate_unix (nm));
|
|
|
1111 #endif /* VMS */
|
|
|
1112 #ifndef DOS_NT
|
|
16
|
1113 if (nm == XSTRING_DATA (name))
|
|
0
|
1114 return name;
|
|
|
1115 return build_string ((char *) nm);
|
|
|
1116 #endif /* not DOS_NT */
|
|
|
1117 }
|
|
|
1118 }
|
|
|
1119
|
|
|
1120 /* Now determine directory to start with and put it in newdir */
|
|
|
1121
|
|
|
1122 newdir = 0;
|
|
|
1123
|
|
|
1124 if (nm[0] == '~') /* prefix ~ */
|
|
|
1125 {
|
|
|
1126 if (IS_DIRECTORY_SEP (nm[1])
|
|
|
1127 #ifdef VMS
|
|
|
1128 || nm[1] == ':'
|
|
|
1129 #endif /* VMS */
|
|
|
1130 || nm[1] == 0) /* ~ by itself */
|
|
|
1131 {
|
|
|
1132 if (!(newdir = (Bufbyte *) egetenv ("HOME")))
|
|
|
1133 newdir = (Bufbyte *) "";
|
|
|
1134 #ifdef DOS_NT
|
|
|
1135 /* Problem when expanding "~\" if HOME is not on current drive.
|
|
|
1136 Ulrich Leodolter, Wed Jan 11 10:20:35 1995 */
|
|
|
1137 if (newdir[1] == ':')
|
|
|
1138 drive = newdir[0];
|
|
|
1139 dostounix_filename (newdir);
|
|
|
1140 #endif
|
|
|
1141 nm++;
|
|
|
1142 #ifdef VMS
|
|
|
1143 nm++; /* Don't leave the slash in nm. */
|
|
|
1144 #endif /* VMS */
|
|
|
1145 }
|
|
|
1146 else /* ~user/filename */
|
|
|
1147 {
|
|
|
1148 for (p = nm; *p && (!IS_DIRECTORY_SEP (*p)
|
|
|
1149 #ifdef VMS
|
|
|
1150 && *p != ':'
|
|
|
1151 #endif /* VMS */
|
|
|
1152 ); p++);
|
|
|
1153 o = (Bufbyte *) alloca (p - nm + 1);
|
|
|
1154 memcpy (o, (char *) nm, p - nm);
|
|
|
1155 o [p - nm] = 0;
|
|
|
1156
|
|
|
1157 #ifdef WINDOWSNT
|
|
|
1158 newdir = (unsigned char *) egetenv ("HOME");
|
|
|
1159 dostounix_filename (newdir);
|
|
|
1160 #else /* not WINDOWSNT */
|
|
|
1161 /* Jamie reports that getpwnam() can get wedged by SIGIO/SIGALARM
|
|
|
1162 occurring in it. (It can call select()). */
|
|
|
1163 slow_down_interrupts ();
|
|
|
1164 pw = (struct passwd *) getpwnam ((char *) o + 1);
|
|
|
1165 speed_up_interrupts ();
|
|
|
1166 if (pw)
|
|
|
1167 {
|
|
|
1168 newdir = (Bufbyte *) pw -> pw_dir;
|
|
|
1169 #ifdef VMS
|
|
|
1170 nm = p + 1; /* skip the terminator */
|
|
|
1171 #else
|
|
|
1172 nm = p;
|
|
|
1173 #endif /* VMS */
|
|
|
1174 }
|
|
|
1175 #endif /* not WINDOWSNT */
|
|
|
1176
|
|
|
1177 /* If we don't find a user of that name, leave the name
|
|
|
1178 unchanged; don't move nm forward to p. */
|
|
|
1179 }
|
|
|
1180 }
|
|
|
1181
|
|
|
1182 if (!IS_ANY_SEP (nm[0])
|
|
|
1183 #ifdef VMS
|
|
|
1184 && !strchr (nm, ':')
|
|
|
1185 #endif /* not VMS */
|
|
|
1186 #ifdef DOS_NT
|
|
|
1187 && drive == -1
|
|
|
1188 #endif /* DOS_NT */
|
|
|
1189 && !newdir
|
|
|
1190 && STRINGP (defalt))
|
|
|
1191 {
|
|
16
|
1192 newdir = XSTRING_DATA (defalt);
|
|
0
|
1193 }
|
|
|
1194
|
|
|
1195 #ifdef DOS_NT
|
|
|
1196 if (newdir == 0 && relpath)
|
|
|
1197 newdir = defdir;
|
|
|
1198 #endif /* DOS_NT */
|
|
|
1199 if (newdir != 0)
|
|
|
1200 {
|
|
|
1201 /* Get rid of any slash at the end of newdir. */
|
|
|
1202 int length = strlen ((char *) newdir);
|
|
|
1203 /* Adding `length > 1 &&' makes ~ expand into / when homedir
|
|
|
1204 is the root dir. People disagree about whether that is right.
|
|
|
1205 Anyway, we can't take the risk of this change now. */
|
|
|
1206 #ifdef DOS_NT
|
|
|
1207 if (newdir[1] != ':' && length > 1)
|
|
|
1208 #endif
|
|
|
1209 if (IS_DIRECTORY_SEP (newdir[length - 1]))
|
|
|
1210 {
|
|
|
1211 Bufbyte *temp = (Bufbyte *) alloca (length);
|
|
|
1212 memcpy (temp, newdir, length - 1);
|
|
|
1213 temp[length - 1] = 0;
|
|
|
1214 newdir = temp;
|
|
|
1215 }
|
|
|
1216 tlen = length + 1;
|
|
|
1217 }
|
|
|
1218 else
|
|
|
1219 tlen = 0;
|
|
|
1220
|
|
|
1221 /* Now concatenate the directory and name to new space in the stack frame */
|
|
|
1222 tlen += strlen ((char *) nm) + 1;
|
|
|
1223 #ifdef DOS_NT
|
|
|
1224 /* Add reserved space for drive name. (The Microsoft x86 compiler
|
|
|
1225 produces incorrect code if the following two lines are combined.) */
|
|
|
1226 target = (Bufbyte *) alloca (tlen + 2);
|
|
|
1227 target += 2;
|
|
|
1228 #else /* not DOS_NT */
|
|
|
1229 target = (Bufbyte *) alloca (tlen);
|
|
|
1230 #endif /* not DOS_NT */
|
|
|
1231 *target = 0;
|
|
|
1232
|
|
|
1233 if (newdir)
|
|
|
1234 {
|
|
|
1235 #ifndef VMS
|
|
|
1236 if (nm[0] == 0 || IS_DIRECTORY_SEP (nm[0]))
|
|
|
1237 strcpy ((char *) target, (char *) newdir);
|
|
|
1238 else
|
|
|
1239 #endif
|
|
|
1240 file_name_as_directory ((char *) target, (char *) newdir);
|
|
|
1241 }
|
|
|
1242
|
|
|
1243 strcat ((char *) target, (char *) nm);
|
|
|
1244 #ifdef VMS
|
|
|
1245 if (strchr (target, '/'))
|
|
|
1246 strcpy (target, sys_translate_unix (target));
|
|
|
1247 #endif /* VMS */
|
|
|
1248
|
|
|
1249 /* Now canonicalize by removing /. and /foo/.. if they appear. */
|
|
|
1250
|
|
|
1251 p = target;
|
|
|
1252 o = target;
|
|
|
1253
|
|
|
1254 while (*p)
|
|
|
1255 {
|
|
|
1256 #ifdef VMS
|
|
|
1257 if (*p != ']' && *p != '>' && *p != '-')
|
|
|
1258 {
|
|
|
1259 if (*p == '\\')
|
|
|
1260 p++;
|
|
|
1261 *o++ = *p++;
|
|
|
1262 }
|
|
|
1263 else if ((p[0] == ']' || p[0] == '>') && p[0] == p[1] + 2)
|
|
|
1264 /* brackets are offset from each other by 2 */
|
|
|
1265 {
|
|
|
1266 p += 2;
|
|
|
1267 if (*p != '.' && *p != '-' && o[-1] != '.')
|
|
|
1268 /* convert [foo][bar] to [bar] */
|
|
|
1269 while (o[-1] != '[' && o[-1] != '<')
|
|
|
1270 o--;
|
|
|
1271 else if (*p == '-' && *o != '.')
|
|
|
1272 *--p = '.';
|
|
|
1273 }
|
|
|
1274 else if (p[0] == '-' && o[-1] == '.' &&
|
|
|
1275 (p[1] == '.' || p[1] == ']' || p[1] == '>'))
|
|
|
1276 /* flush .foo.- ; leave - if stopped by '[' or '<' */
|
|
|
1277 {
|
|
|
1278 do
|
|
|
1279 o--;
|
|
|
1280 while (o[-1] != '.' && o[-1] != '[' && o[-1] != '<');
|
|
|
1281 if (p[1] == '.') /* foo.-.bar ==> bar. */
|
|
|
1282 p += 2;
|
|
|
1283 else if (o[-1] == '.') /* '.foo.-]' ==> ']' */
|
|
|
1284 p++, o--;
|
|
|
1285 /* else [foo.-] ==> [-] */
|
|
|
1286 }
|
|
|
1287 else
|
|
|
1288 {
|
|
|
1289 #ifndef VMS4_4
|
|
|
1290 if (*p == '-' &&
|
|
|
1291 o[-1] != '[' && o[-1] != '<' && o[-1] != '.' &&
|
|
|
1292 p[1] != ']' && p[1] != '>' && p[1] != '.')
|
|
|
1293 *p = '_';
|
|
|
1294 #endif /* VMS4_4 */
|
|
|
1295 *o++ = *p++;
|
|
|
1296 }
|
|
|
1297 #else /* not VMS */
|
|
|
1298 if (!IS_DIRECTORY_SEP (*p))
|
|
|
1299 {
|
|
|
1300 *o++ = *p++;
|
|
|
1301 }
|
|
|
1302 else if (IS_DIRECTORY_SEP (p[0]) && IS_DIRECTORY_SEP (p[1])
|
|
|
1303 #if defined (APOLLO) || defined (WINDOWSNT)
|
|
|
1304 /* // at start of filename is meaningful in Apollo
|
|
|
1305 and WindowsNT systems */
|
|
|
1306 && o != target
|
|
|
1307 #endif /* APOLLO */
|
|
|
1308 )
|
|
|
1309 {
|
|
|
1310 o = target;
|
|
|
1311 p++;
|
|
|
1312 }
|
|
|
1313 else if (IS_DIRECTORY_SEP (p[0])
|
|
|
1314 && p[1] == '.'
|
|
|
1315 && (IS_DIRECTORY_SEP (p[2])
|
|
|
1316 || p[2] == 0))
|
|
|
1317 {
|
|
|
1318 /* If "/." is the entire filename, keep the "/". Otherwise,
|
|
|
1319 just delete the whole "/.". */
|
|
|
1320 if (o == target && p[2] == '\0')
|
|
|
1321 *o++ = *p;
|
|
|
1322 p += 2;
|
|
|
1323 }
|
|
|
1324 else if (IS_DIRECTORY_SEP (p[0]) && p[1] == '.' && p[2] == '.'
|
|
|
1325 /* `/../' is the "superroot" on certain file systems. */
|
|
|
1326 && o != target
|
|
|
1327 && (IS_DIRECTORY_SEP (p[3]) || p[3] == 0))
|
|
|
1328 {
|
|
|
1329 while (o != target && (--o) && !IS_DIRECTORY_SEP (*o))
|
|
|
1330 ;
|
|
|
1331 #if defined (APOLLO) || defined (WINDOWSNT)
|
|
|
1332 if (o == target + 1
|
|
|
1333 && IS_DIRECTORY_SEP (o[-1]) && IS_DIRECTORY_SEP (o[0]))
|
|
|
1334 ++o;
|
|
|
1335 else
|
|
|
1336 #endif /* APOLLO || WINDOWSNT */
|
|
|
1337 if (o == target && IS_ANY_SEP (*o))
|
|
|
1338 ++o;
|
|
|
1339 p += 3;
|
|
|
1340 }
|
|
|
1341 else
|
|
|
1342 {
|
|
|
1343 *o++ = *p++;
|
|
|
1344 }
|
|
|
1345 #endif /* not VMS */
|
|
|
1346 }
|
|
|
1347
|
|
|
1348 #ifdef DOS_NT
|
|
|
1349 /* at last, set drive name. */
|
|
|
1350 if (target[1] != ':'
|
|
|
1351 #ifdef WINDOWSNT
|
|
|
1352 /* Allow network paths that look like "\\foo" */
|
|
|
1353 && !(IS_DIRECTORY_SEP (target[0]) && IS_DIRECTORY_SEP (target[1]))
|
|
|
1354 #endif /* WINDOWSNT */
|
|
|
1355 )
|
|
|
1356 {
|
|
|
1357 target -= 2;
|
|
|
1358 target[0] = (drive < 0 ? getdisk () + 'A' : drive);
|
|
|
1359 target[1] = ':';
|
|
|
1360 }
|
|
|
1361 #endif /* DOS_NT */
|
|
|
1362
|
|
|
1363 return make_string (target, o - target);
|
|
|
1364 }
|
|
|
1365
|
|
|
1366 #if 0 /* FSFmacs */
|
|
|
1367 another older version of expand-file-name;
|
|
|
1368 #endif
|
|
|
1369
|
|
|
1370 /* not a full declaration because realpath() is typed differently
|
|
|
1371 on different systems */
|
|
|
1372 extern char *realpath ();
|
|
|
1373
|
|
20
|
1374 DEFUN ("file-truename", Ffile_truename, 1, 2, 0, /*
|
|
0
|
1375 Return the canonical name of the given FILE.
|
|
|
1376 Second arg DEFAULT is directory to start with if FILE is relative
|
|
|
1377 (does not start with slash); if DEFAULT is nil or missing,
|
|
|
1378 the current buffer's value of default-directory is used.
|
|
|
1379 No component of the resulting pathname will be a symbolic link, as
|
|
|
1380 in the realpath() function.
|
|
20
|
1381 */
|
|
|
1382 (filename, defalt))
|
|
0
|
1383 {
|
|
|
1384 /* This function can GC */
|
|
|
1385 struct gcpro gcpro1;
|
|
|
1386 Lisp_Object expanded_name;
|
|
|
1387 Lisp_Object handler;
|
|
|
1388
|
|
|
1389 CHECK_STRING (filename);
|
|
|
1390
|
|
|
1391 GCPRO1 (filename);
|
|
|
1392 expanded_name = Fexpand_file_name (filename, defalt);
|
|
|
1393 UNGCPRO;
|
|
|
1394
|
|
|
1395 if (!STRINGP (expanded_name))
|
|
|
1396 return Qnil;
|
|
|
1397
|
|
|
1398 GCPRO1 (expanded_name);
|
|
|
1399 handler = Ffind_file_name_handler (expanded_name, Qfile_truename);
|
|
|
1400 UNGCPRO;
|
|
|
1401
|
|
|
1402 if (!NILP (handler))
|
|
|
1403 return (call2_check_string (handler, Qfile_truename,
|
|
|
1404 expanded_name));
|
|
|
1405
|
|
|
1406 #ifdef VMS
|
|
|
1407 return (expanded_name);
|
|
|
1408 #else
|
|
|
1409 {
|
|
|
1410 char resolved_path[MAXPATHLEN];
|
|
|
1411 char path[MAXPATHLEN];
|
|
|
1412 char *p = path;
|
|
16
|
1413 int elen = XSTRING_LENGTH (expanded_name);
|
|
0
|
1414
|
|
|
1415 if (elen >= countof (path))
|
|
|
1416 goto toolong;
|
|
|
1417
|
|
16
|
1418 memcpy (path, XSTRING_DATA (expanded_name), elen + 1);
|
|
0
|
1419 /* memset (resolved_path, 0, sizeof (resolved_path)); */
|
|
|
1420
|
|
|
1421 /* Try doing it all at once. */
|
|
|
1422 /* !!#### Does realpath() Mule-encapsulate? */
|
|
|
1423 if (!realpath (path, resolved_path))
|
|
|
1424 {
|
|
|
1425 /* Didn't resolve it -- have to do it one component at a time. */
|
|
|
1426 /* "realpath" is a typically useless, stupid un*x piece of crap.
|
|
|
1427 It claims to return a useful value in the "error" case, but since
|
|
|
1428 there is no indication provided of how far along the pathname
|
|
|
1429 the function went before erring, there is no way to use the
|
|
|
1430 partial result returned. What a piece of junk. */
|
|
|
1431 for (;;)
|
|
|
1432 {
|
|
|
1433 p = (char *) memchr (p + 1, '/', elen - (p + 1 - path));
|
|
|
1434 if (p)
|
|
|
1435 *p = 0;
|
|
|
1436
|
|
|
1437 /* memset (resolved_path, 0, sizeof (resolved_path)); */
|
|
|
1438 if (realpath (path, resolved_path))
|
|
|
1439 {
|
|
|
1440 if (p)
|
|
|
1441 *p = '/';
|
|
|
1442 else
|
|
|
1443 break;
|
|
|
1444
|
|
|
1445 }
|
|
|
1446 else if (errno == ENOENT)
|
|
|
1447 {
|
|
|
1448 /* Failed on this component. Just tack on the rest of
|
|
|
1449 the string and we are done. */
|
|
|
1450 int rlen = strlen (resolved_path);
|
|
|
1451
|
|
|
1452 /* "On failure, it returns NULL, sets errno to indicate
|
|
|
1453 the error, and places in resolved_path the absolute pathname
|
|
|
1454 of the path component which could not be resolved." */
|
|
|
1455 if (p)
|
|
|
1456 {
|
|
|
1457 int plen = elen - (p - path);
|
|
|
1458
|
|
|
1459 if (rlen > 1 && resolved_path[rlen - 1] == '/')
|
|
|
1460 rlen = rlen - 1;
|
|
|
1461
|
|
|
1462 if (plen + rlen + 1 > countof (resolved_path))
|
|
|
1463 goto toolong;
|
|
|
1464
|
|
|
1465 resolved_path[rlen] = '/';
|
|
|
1466 memcpy (resolved_path + rlen + 1, p + 1, plen + 1 - 1);
|
|
|
1467 }
|
|
|
1468 break;
|
|
|
1469 }
|
|
|
1470 else
|
|
|
1471 goto lose;
|
|
|
1472 }
|
|
|
1473 }
|
|
|
1474
|
|
|
1475 {
|
|
|
1476 int rlen = strlen (resolved_path);
|
|
16
|
1477 if (elen > 0 && XSTRING_BYTE (expanded_name, elen - 1) == '/'
|
|
0
|
1478 && !(rlen > 0 && resolved_path[rlen - 1] == '/'))
|
|
|
1479 {
|
|
|
1480 if (rlen + 1 > countof (resolved_path))
|
|
|
1481 goto toolong;
|
|
|
1482 resolved_path[rlen] = '/';
|
|
|
1483 resolved_path[rlen + 1] = 0;
|
|
|
1484 rlen = rlen + 1;
|
|
|
1485 }
|
|
|
1486 return make_string ((Bufbyte *) resolved_path, rlen);
|
|
|
1487 }
|
|
|
1488
|
|
|
1489 toolong:
|
|
|
1490 errno = ENAMETOOLONG;
|
|
|
1491 goto lose;
|
|
|
1492 lose:
|
|
|
1493 report_file_error ("Finding truename", list1 (expanded_name));
|
|
|
1494 }
|
|
|
1495 return Qnil; /* suppress compiler warning */
|
|
|
1496 #endif /* not VMS */
|
|
|
1497 }
|
|
|
1498
|
|
|
1499
|
|
20
|
1500 DEFUN ("substitute-in-file-name", Fsubstitute_in_file_name, 1, 1, 0, /*
|
|
0
|
1501 Substitute environment variables referred to in FILENAME.
|
|
|
1502 `$FOO' where FOO is an environment variable name means to substitute
|
|
|
1503 the value of that variable. The variable name should be terminated
|
|
|
1504 with a character not a letter, digit or underscore; otherwise, enclose
|
|
|
1505 the entire variable name in braces.
|
|
|
1506 If `/~' appears, all of FILENAME through that `/' is discarded.
|
|
|
1507
|
|
|
1508 On VMS, `$' substitution is not done; this function does little and only
|
|
|
1509 duplicates what `expand-file-name' does.
|
|
20
|
1510 */
|
|
|
1511 (string))
|
|
0
|
1512 {
|
|
|
1513 Bufbyte *nm;
|
|
|
1514
|
|
|
1515 Bufbyte *s, *p, *o, *x, *endp;
|
|
|
1516 Bufbyte *target = 0;
|
|
|
1517 int total = 0;
|
|
|
1518 int substituted = 0;
|
|
|
1519 Bufbyte *xnm;
|
|
|
1520 Lisp_Object handler;
|
|
|
1521
|
|
|
1522 CHECK_STRING (string);
|
|
|
1523
|
|
|
1524 /* If the file name has special constructs in it,
|
|
|
1525 call the corresponding file handler. */
|
|
|
1526 handler = Ffind_file_name_handler (string, Qsubstitute_in_file_name);
|
|
|
1527 if (!NILP (handler))
|
|
|
1528 {
|
|
|
1529 Lisp_Object retval = call2 (handler, Qsubstitute_in_file_name,
|
|
|
1530 string);
|
|
|
1531
|
|
|
1532 if (!NILP (retval))
|
|
|
1533 CHECK_STRING (retval);
|
|
|
1534 return retval;
|
|
|
1535 }
|
|
|
1536
|
|
16
|
1537 nm = XSTRING_DATA (string);
|
|
0
|
1538 #ifdef MSDOS
|
|
|
1539 dostounix_filename (nm = strcpy (alloca (strlen (nm) + 1), nm));
|
|
16
|
1540 substituted = !strcmp (nm, XSTRING_DATA (string));
|
|
0
|
1541 #endif
|
|
16
|
1542 endp = nm + XSTRING_LENGTH (string);
|
|
0
|
1543
|
|
|
1544 /* If /~ or // appears, discard everything through first slash. */
|
|
|
1545
|
|
|
1546 for (p = nm; p != endp; p++)
|
|
|
1547 {
|
|
|
1548 if ((p[0] == '~' ||
|
|
|
1549 #ifdef APOLLO
|
|
|
1550 /* // at start of file name is meaningful in Apollo system */
|
|
|
1551 (p[0] == '/' && p - 1 != nm)
|
|
|
1552 #else /* not APOLLO */
|
|
|
1553 #ifdef WINDOWSNT
|
|
|
1554 (IS_DIRECTORY_SEP (p[0]) && p - 1 != nm)
|
|
|
1555 #else /* not WINDOWSNT */
|
|
|
1556 p[0] == '/'
|
|
|
1557 #endif /* not WINDOWSNT */
|
|
|
1558 #endif /* not APOLLO */
|
|
|
1559 )
|
|
|
1560 && p != nm
|
|
|
1561 && (0
|
|
|
1562 #ifdef VMS
|
|
|
1563 || p[-1] == ':' || p[-1] == ']' || p[-1] == '>'
|
|
|
1564 #endif /* VMS */
|
|
|
1565 || IS_DIRECTORY_SEP (p[-1])))
|
|
|
1566 {
|
|
|
1567 nm = p;
|
|
|
1568 substituted = 1;
|
|
|
1569 }
|
|
|
1570 #ifdef DOS_NT
|
|
|
1571 if (p[0] && p[1] == ':')
|
|
|
1572 {
|
|
|
1573 nm = p;
|
|
|
1574 substituted = 1;
|
|
|
1575 }
|
|
|
1576 #endif /* DOS_NT */
|
|
|
1577 }
|
|
|
1578
|
|
|
1579 #ifdef VMS
|
|
|
1580 return build_string (nm);
|
|
|
1581 #else
|
|
|
1582
|
|
|
1583 /* See if any variables are substituted into the string
|
|
|
1584 and find the total length of their values in `total' */
|
|
|
1585
|
|
|
1586 for (p = nm; p != endp;)
|
|
|
1587 if (*p != '$')
|
|
|
1588 p++;
|
|
|
1589 else
|
|
|
1590 {
|
|
|
1591 p++;
|
|
|
1592 if (p == endp)
|
|
|
1593 goto badsubst;
|
|
|
1594 else if (*p == '$')
|
|
|
1595 {
|
|
|
1596 /* "$$" means a single "$" */
|
|
|
1597 p++;
|
|
|
1598 total -= 1;
|
|
|
1599 substituted = 1;
|
|
|
1600 continue;
|
|
|
1601 }
|
|
|
1602 else if (*p == '{')
|
|
|
1603 {
|
|
|
1604 o = ++p;
|
|
|
1605 while (p != endp && *p != '}') p++;
|
|
|
1606 if (*p != '}') goto missingclose;
|
|
|
1607 s = p;
|
|
|
1608 }
|
|
|
1609 else
|
|
|
1610 {
|
|
|
1611 o = p;
|
|
|
1612 while (p != endp && (isalnum (*p) || *p == '_')) p++;
|
|
|
1613 s = p;
|
|
|
1614 }
|
|
|
1615
|
|
|
1616 /* Copy out the variable name */
|
|
|
1617 target = (Bufbyte *) alloca (s - o + 1);
|
|
|
1618 strncpy ((char *) target, (char *) o, s - o);
|
|
|
1619 target[s - o] = 0;
|
|
|
1620 #ifdef DOS_NT
|
|
|
1621 strupr (target); /* $home == $HOME etc. */
|
|
|
1622 #endif /* DOS_NT */
|
|
|
1623
|
|
|
1624 /* Get variable value */
|
|
|
1625 o = (Bufbyte *) egetenv ((char *) target);
|
|
|
1626 if (!o) goto badvar;
|
|
|
1627 total += strlen ((char *) o);
|
|
|
1628 substituted = 1;
|
|
|
1629 }
|
|
|
1630
|
|
|
1631 if (!substituted)
|
|
|
1632 return string;
|
|
|
1633
|
|
|
1634 /* If substitution required, recopy the string and do it */
|
|
|
1635 /* Make space in stack frame for the new copy */
|
|
16
|
1636 xnm = (Bufbyte *) alloca (XSTRING_LENGTH (string) + total + 1);
|
|
0
|
1637 x = xnm;
|
|
|
1638
|
|
|
1639 /* Copy the rest of the name through, replacing $ constructs with values */
|
|
|
1640 for (p = nm; *p;)
|
|
|
1641 if (*p != '$')
|
|
|
1642 *x++ = *p++;
|
|
|
1643 else
|
|
|
1644 {
|
|
|
1645 p++;
|
|
|
1646 if (p == endp)
|
|
|
1647 goto badsubst;
|
|
|
1648 else if (*p == '$')
|
|
|
1649 {
|
|
|
1650 *x++ = *p++;
|
|
|
1651 continue;
|
|
|
1652 }
|
|
|
1653 else if (*p == '{')
|
|
|
1654 {
|
|
|
1655 o = ++p;
|
|
|
1656 while (p != endp && *p != '}') p++;
|
|
|
1657 if (*p != '}') goto missingclose;
|
|
|
1658 s = p++;
|
|
|
1659 }
|
|
|
1660 else
|
|
|
1661 {
|
|
|
1662 o = p;
|
|
|
1663 while (p != endp && (isalnum (*p) || *p == '_')) p++;
|
|
|
1664 s = p;
|
|
|
1665 }
|
|
|
1666
|
|
|
1667 /* Copy out the variable name */
|
|
|
1668 target = (Bufbyte *) alloca (s - o + 1);
|
|
|
1669 strncpy ((char *) target, (char *) o, s - o);
|
|
|
1670 target[s - o] = 0;
|
|
|
1671 #ifdef DOS_NT
|
|
|
1672 strupr (target); /* $home == $HOME etc. */
|
|
|
1673 #endif /* DOS_NT */
|
|
|
1674
|
|
|
1675 /* Get variable value */
|
|
|
1676 o = (Bufbyte *) egetenv ((char *) target);
|
|
|
1677 if (!o)
|
|
|
1678 goto badvar;
|
|
|
1679
|
|
|
1680 strcpy ((char *) x, (char *) o);
|
|
|
1681 x += strlen ((char *) o);
|
|
|
1682 }
|
|
|
1683
|
|
|
1684 *x = 0;
|
|
|
1685
|
|
|
1686 /* If /~ or // appears, discard everything through first slash. */
|
|
|
1687
|
|
|
1688 for (p = xnm; p != x; p++)
|
|
|
1689 if ((p[0] == '~'
|
|
|
1690 #ifdef APOLLO
|
|
|
1691 /* // at start of file name is meaningful in Apollo system */
|
|
|
1692 || (p[0] == '/' && p - 1 != xnm)
|
|
|
1693 #else /* not APOLLO */
|
|
|
1694 #ifdef WINDOWSNT
|
|
|
1695 || (IS_DIRECTORY_SEP (p[0]) && p - 1 != xnm)
|
|
|
1696 #else /* not WINDOWSNT */
|
|
|
1697 || p[0] == '/'
|
|
|
1698 #endif /* not WINDOWSNT */
|
|
|
1699 #endif /* not APOLLO */
|
|
|
1700 )
|
|
|
1701 /* don't do p[-1] if that would go off the beginning --jwz */
|
|
|
1702 && p != nm && p > xnm && IS_DIRECTORY_SEP (p[-1]))
|
|
|
1703 xnm = p;
|
|
|
1704 #ifdef DOS_NT
|
|
|
1705 else if (p[0] && p[1] == ':')
|
|
|
1706 xnm = p;
|
|
|
1707 #endif
|
|
|
1708
|
|
|
1709 return make_string (xnm, x - xnm);
|
|
|
1710
|
|
|
1711 badsubst:
|
|
|
1712 error ("Bad format environment-variable substitution");
|
|
|
1713 missingclose:
|
|
|
1714 error ("Missing \"}\" in environment-variable substitution");
|
|
|
1715 badvar:
|
|
|
1716 error ("Substituting nonexistent environment variable \"%s\"",
|
|
|
1717 target);
|
|
|
1718
|
|
|
1719 /* NOTREACHED */
|
|
|
1720 return Qnil; /* suppress compiler warning */
|
|
|
1721 #endif /* not VMS */
|
|
|
1722 }
|
|
|
1723
|
|
|
1724 /* (directory-file-name (expand-file-name FOO)) */
|
|
|
1725
|
|
|
1726 Lisp_Object
|
|
|
1727 expand_and_dir_to_file (Lisp_Object filename, Lisp_Object defdir)
|
|
|
1728 {
|
|
|
1729 /* This function can GC */
|
|
|
1730 Lisp_Object abspath;
|
|
|
1731 struct gcpro gcpro1;
|
|
|
1732
|
|
|
1733 GCPRO1 (filename);
|
|
|
1734 abspath = Fexpand_file_name (filename, defdir);
|
|
|
1735 #ifdef VMS
|
|
|
1736 {
|
|
|
1737 Bufbyte c =
|
|
16
|
1738 XSTRING_BYTE (abspath, XSTRING_LENGTH (abspath) - 1);
|
|
0
|
1739 if (c == ':' || c == ']' || c == '>')
|
|
|
1740 abspath = Fdirectory_file_name (abspath);
|
|
|
1741 }
|
|
|
1742 #else
|
|
|
1743 /* Remove final slash, if any (unless path is root).
|
|
|
1744 stat behaves differently depending! */
|
|
16
|
1745 if (XSTRING_LENGTH (abspath) > 1
|
|
|
1746 && IS_DIRECTORY_SEP (XSTRING_BYTE (abspath, XSTRING_LENGTH (abspath) - 1))
|
|
|
1747 && !IS_DEVICE_SEP (XSTRING_BYTE (abspath, XSTRING_LENGTH (abspath) - 2)))
|
|
0
|
1748 /* We cannot take shortcuts; they might be wrong for magic file names. */
|
|
|
1749 abspath = Fdirectory_file_name (abspath);
|
|
|
1750 #endif
|
|
|
1751 UNGCPRO;
|
|
|
1752 return abspath;
|
|
|
1753 }
|
|
|
1754
|
|
|
1755 /* Signal an error if the file ABSNAME already exists.
|
|
|
1756 If INTERACTIVE is nonzero, ask the user whether to proceed,
|
|
|
1757 and bypass the error if the user says to go ahead.
|
|
|
1758 QUERYSTRING is a name for the action that is being considered
|
|
|
1759 to alter the file.
|
|
|
1760 *STATPTR is used to store the stat information if the file exists.
|
|
|
1761 If the file does not exist, STATPTR->st_mode is set to 0. */
|
|
|
1762
|
|
|
1763 static void
|
|
|
1764 barf_or_query_if_file_exists (Lisp_Object absname, CONST char *querystring,
|
|
|
1765 int interactive, struct stat *statptr)
|
|
|
1766 {
|
|
|
1767 struct stat statbuf;
|
|
|
1768
|
|
|
1769 /* stat is a good way to tell whether the file exists,
|
|
|
1770 regardless of what access permissions it has. */
|
|
16
|
1771 if (stat ((char *) XSTRING_DATA (absname), &statbuf) >= 0)
|
|
0
|
1772 {
|
|
|
1773 Lisp_Object tem;
|
|
|
1774 struct gcpro gcpro1;
|
|
|
1775
|
|
|
1776 GCPRO1 (absname);
|
|
|
1777 if (interactive)
|
|
|
1778 tem = call1
|
|
|
1779 (Qyes_or_no_p,
|
|
|
1780 (emacs_doprnt_string_c
|
|
|
1781 ((CONST Bufbyte *) GETTEXT ("File %s already exists; %s anyway? "),
|
|
16
|
1782 Qnil, -1, XSTRING_DATA (absname),
|
|
0
|
1783 GETTEXT (querystring))));
|
|
|
1784 else
|
|
|
1785 tem = Qnil;
|
|
|
1786 UNGCPRO;
|
|
|
1787 if (NILP (tem))
|
|
|
1788 Fsignal (Qfile_already_exists,
|
|
|
1789 list2 (build_translated_string ("File already exists"),
|
|
|
1790 absname));
|
|
|
1791 if (statptr)
|
|
|
1792 *statptr = statbuf;
|
|
|
1793 }
|
|
|
1794 else
|
|
|
1795 {
|
|
|
1796 if (statptr)
|
|
|
1797 statptr->st_mode = 0;
|
|
|
1798 }
|
|
|
1799 return;
|
|
|
1800 }
|
|
|
1801
|
|
20
|
1802 DEFUN ("copy-file", Fcopy_file, 2, 4,
|
|
|
1803 "fCopy file: \nFCopy %s to file: \np\nP", /*
|
|
0
|
1804 Copy FILE to NEWNAME. Both args must be strings.
|
|
|
1805 Signals a `file-already-exists' error if file NEWNAME already exists,
|
|
|
1806 unless a third argument OK-IF-ALREADY-EXISTS is supplied and non-nil.
|
|
|
1807 A number as third arg means request confirmation if NEWNAME already exists.
|
|
|
1808 This is what happens in interactive use with M-x.
|
|
|
1809 Fourth arg KEEP-TIME non-nil means give the new file the same
|
|
|
1810 last-modified time as the old one. (This works on only some systems.)
|
|
|
1811 A prefix arg makes KEEP-TIME non-nil.
|
|
20
|
1812 */
|
|
|
1813 (filename, newname, ok_if_already_exists, keep_time))
|
|
0
|
1814 {
|
|
|
1815 /* This function can GC */
|
|
|
1816 int ifd, ofd, n;
|
|
|
1817 char buf[16 * 1024];
|
|
|
1818 struct stat st, out_st;
|
|
|
1819 Lisp_Object handler;
|
|
|
1820 int speccount = specpdl_depth ();
|
|
|
1821 struct gcpro gcpro1, gcpro2;
|
|
|
1822 /* Lisp_Object args[6]; */
|
|
|
1823 int input_file_statable_p;
|
|
|
1824
|
|
|
1825 GCPRO2 (filename, newname);
|
|
|
1826 CHECK_STRING (filename);
|
|
|
1827 CHECK_STRING (newname);
|
|
|
1828 filename = Fexpand_file_name (filename, Qnil);
|
|
|
1829 newname = Fexpand_file_name (newname, Qnil);
|
|
|
1830
|
|
|
1831 /* If the input file name has special constructs in it,
|
|
|
1832 call the corresponding file handler. */
|
|
|
1833 handler = Ffind_file_name_handler (filename, Qcopy_file);
|
|
|
1834 /* Likewise for output file name. */
|
|
|
1835 if (NILP (handler))
|
|
|
1836 handler = Ffind_file_name_handler (newname, Qcopy_file);
|
|
|
1837 if (!NILP (handler))
|
|
|
1838 {
|
|
|
1839 UNGCPRO;
|
|
|
1840 return call5 (handler, Qcopy_file, filename, newname,
|
|
16
|
1841 ok_if_already_exists, keep_time);
|
|
0
|
1842 }
|
|
|
1843
|
|
|
1844 /* When second argument is a directory, copy the file into it.
|
|
|
1845 (copy-file "foo" "bar/") == (copy-file "foo" "bar/foo")
|
|
|
1846 */
|
|
|
1847 if (!NILP (Ffile_directory_p (newname)))
|
|
|
1848 {
|
|
|
1849 Lisp_Object args[3];
|
|
|
1850 struct gcpro ngcpro1;
|
|
|
1851 int i = 1;
|
|
|
1852
|
|
|
1853 args[0] = newname;
|
|
|
1854 args[1] = Qnil; args[2] = Qnil;
|
|
|
1855 NGCPRO1 (*args);
|
|
|
1856 ngcpro1.nvars = 3;
|
|
16
|
1857 if (XSTRING_BYTE (newname, XSTRING_LENGTH (newname) - 1) != '/')
|
|
0
|
1858 args[i++] = build_string ("/");
|
|
|
1859 args[i++] = Ffile_name_nondirectory (filename);
|
|
|
1860 newname = Fconcat (i, args);
|
|
|
1861 NUNGCPRO;
|
|
|
1862 }
|
|
|
1863
|
|
|
1864 if (NILP (ok_if_already_exists)
|
|
|
1865 || INTP (ok_if_already_exists))
|
|
|
1866 barf_or_query_if_file_exists (newname, "copy to it",
|
|
|
1867 INTP (ok_if_already_exists), &out_st);
|
|
16
|
1868 else if (stat ((CONST char *) XSTRING_DATA (newname), &out_st) < 0)
|
|
0
|
1869 out_st.st_mode = 0;
|
|
|
1870
|
|
16
|
1871 ifd = open ((char *) XSTRING_DATA (filename), O_RDONLY, 0);
|
|
0
|
1872 if (ifd < 0)
|
|
|
1873 report_file_error ("Opening input file", Fcons (filename, Qnil));
|
|
|
1874
|
|
|
1875 record_unwind_protect (close_file_unwind, make_int (ifd));
|
|
|
1876
|
|
|
1877 /* We can only copy regular files and symbolic links. Other files are not
|
|
|
1878 copyable by us. */
|
|
|
1879 input_file_statable_p = (fstat (ifd, &st) >= 0);
|
|
|
1880
|
|
|
1881 #ifndef DOS_NT
|
|
|
1882 if (out_st.st_mode != 0
|
|
|
1883 && st.st_dev == out_st.st_dev && st.st_ino == out_st.st_ino)
|
|
|
1884 {
|
|
|
1885 errno = 0;
|
|
|
1886 report_file_error ("Input and output files are the same",
|
|
|
1887 Fcons (filename, Fcons (newname, Qnil)));
|
|
|
1888 }
|
|
|
1889 #endif
|
|
|
1890
|
|
|
1891 #if defined (S_ISREG) && defined (S_ISLNK)
|
|
|
1892 if (input_file_statable_p)
|
|
|
1893 {
|
|
|
1894 if (!(S_ISREG (st.st_mode))
|
|
|
1895 /* XEmacs: have to allow S_ISCHR in order to copy /dev/null */
|
|
|
1896 #ifdef S_ISCHR
|
|
|
1897 && !(S_ISCHR (st.st_mode))
|
|
|
1898 #endif
|
|
|
1899 && !(S_ISLNK (st.st_mode)))
|
|
|
1900 {
|
|
|
1901 #if defined (EISDIR)
|
|
|
1902 /* Get a better looking error message. */
|
|
|
1903 errno = EISDIR;
|
|
|
1904 #endif /* EISDIR */
|
|
|
1905 report_file_error ("Non-regular file", Fcons (filename, Qnil));
|
|
|
1906 }
|
|
|
1907 }
|
|
|
1908 #endif /* S_ISREG && S_ISLNK */
|
|
|
1909
|
|
|
1910 #ifdef VMS
|
|
|
1911 /* Create the copy file with the same record format as the input file */
|
|
16
|
1912 ofd = sys_creat ((char *) XSTRING_DATA (newname), 0666, ifd);
|
|
0
|
1913 #else
|
|
|
1914 #ifdef MSDOS
|
|
|
1915 /* System's default file type was set to binary by _fmode in emacs.c. */
|
|
16
|
1916 ofd = creat ((char *) XSTRING_DATA (newname), S_IREAD | S_IWRITE);
|
|
0
|
1917 #else /* not MSDOS */
|
|
16
|
1918 ofd = creat ((char *) XSTRING_DATA (newname), 0666);
|
|
0
|
1919 #endif /* not MSDOS */
|
|
|
1920 #endif /* VMS */
|
|
|
1921 if (ofd < 0)
|
|
|
1922 report_file_error ("Opening output file", list1 (newname));
|
|
|
1923
|
|
|
1924 {
|
|
|
1925 Lisp_Object ofd_locative = noseeum_cons (make_int (ofd), Qnil);
|
|
|
1926
|
|
|
1927 record_unwind_protect (close_file_unwind, ofd_locative);
|
|
|
1928
|
|
|
1929 while ((n = read_allowing_quit (ifd, buf, sizeof (buf))) > 0)
|
|
|
1930 {
|
|
|
1931 if (write_allowing_quit (ofd, buf, n) != n)
|
|
|
1932 report_file_error ("I/O error", list1 (newname));
|
|
|
1933 }
|
|
|
1934
|
|
|
1935 /* Closing the output clobbers the file times on some systems. */
|
|
|
1936 if (close (ofd) < 0)
|
|
|
1937 report_file_error ("I/O error", Fcons (newname, Qnil));
|
|
|
1938
|
|
|
1939 if (input_file_statable_p)
|
|
|
1940 {
|
|
16
|
1941 if (!NILP (keep_time))
|
|
0
|
1942 {
|
|
|
1943 EMACS_TIME atime, mtime;
|
|
|
1944 EMACS_SET_SECS_USECS (atime, st.st_atime, 0);
|
|
|
1945 EMACS_SET_SECS_USECS (mtime, st.st_mtime, 0);
|
|
16
|
1946 if (set_file_times ((char *) XSTRING_DATA (newname), atime,
|
|
0
|
1947 mtime))
|
|
|
1948 report_file_error ("I/O error", Fcons (newname, Qnil));
|
|
|
1949 }
|
|
|
1950 #ifndef MSDOS
|
|
16
|
1951 chmod ((CONST char *) XSTRING_DATA (newname),
|
|
0
|
1952 st.st_mode & 07777);
|
|
|
1953 #else /* MSDOS */
|
|
|
1954 #if defined (__DJGPP__) && __DJGPP__ > 1
|
|
|
1955 /* In DJGPP v2.0 and later, fstat usually returns true file mode bits,
|
|
|
1956 and if it can't, it tells so. Otherwise, under MSDOS we usually
|
|
|
1957 get only the READ bit, which will make the copied file read-only,
|
|
|
1958 so it's better not to chmod at all. */
|
|
|
1959 if ((_djstat_flags & _STFAIL_WRITEBIT) == 0)
|
|
16
|
1960 chmod ((char *) XSTRING_DATA (newname), st.st_mode & 07777);
|
|
0
|
1961 #endif /* DJGPP version 2 or newer */
|
|
|
1962 #endif /* MSDOS */
|
|
|
1963 }
|
|
|
1964
|
|
|
1965 /* We'll close it by hand */
|
|
|
1966 XCAR (ofd_locative) = Qnil;
|
|
|
1967
|
|
|
1968 /* Close ifd */
|
|
|
1969 unbind_to (speccount, Qnil);
|
|
|
1970 }
|
|
|
1971
|
|
|
1972 UNGCPRO;
|
|
|
1973 return Qnil;
|
|
|
1974 }
|
|
|
1975
|
|
20
|
1976 DEFUN ("make-directory-internal", Fmake_directory_internal, 1, 1, 0, /*
|
|
0
|
1977 Create a directory. One argument, a file name string.
|
|
20
|
1978 */
|
|
|
1979 (dirname))
|
|
0
|
1980 {
|
|
|
1981 /* This function can GC */
|
|
|
1982 char dir [MAXPATHLEN];
|
|
|
1983 Lisp_Object handler;
|
|
|
1984
|
|
|
1985 struct gcpro gcpro1;
|
|
|
1986
|
|
|
1987 GCPRO1 (dirname);
|
|
|
1988 CHECK_STRING (dirname);
|
|
|
1989 dirname = Fexpand_file_name (dirname, Qnil);
|
|
|
1990
|
|
|
1991 handler = Ffind_file_name_handler (dirname, Qmake_directory_internal);
|
|
|
1992 UNGCPRO;
|
|
|
1993 if (!NILP (handler))
|
|
|
1994 return (call2 (handler, Qmake_directory_internal,
|
|
|
1995 dirname));
|
|
|
1996
|
|
16
|
1997 if (XSTRING_LENGTH (dirname) > (sizeof (dir) - 1))
|
|
0
|
1998 {
|
|
|
1999 return Fsignal (Qfile_error,
|
|
|
2000 list3 (build_translated_string ("Creating directory"),
|
|
|
2001 build_translated_string ("pathame too long"),
|
|
|
2002 dirname));
|
|
|
2003 }
|
|
16
|
2004 strncpy (dir, (char *) XSTRING_DATA (dirname),
|
|
|
2005 XSTRING_LENGTH (dirname) + 1);
|
|
0
|
2006
|
|
|
2007 #ifndef VMS
|
|
16
|
2008 if (dir [XSTRING_LENGTH (dirname) - 1] == '/')
|
|
|
2009 dir [XSTRING_LENGTH (dirname) - 1] = 0;
|
|
0
|
2010 #endif
|
|
|
2011
|
|
|
2012 #ifdef WINDOWSNT
|
|
|
2013 if (mkdir (dir) != 0)
|
|
|
2014 #else
|
|
|
2015 if (mkdir (dir, 0777) != 0)
|
|
|
2016 #endif
|
|
|
2017 report_file_error ("Creating directory", list1 (dirname));
|
|
|
2018
|
|
|
2019 return Qnil;
|
|
|
2020 }
|
|
|
2021
|
|
20
|
2022 DEFUN ("delete-directory", Fdelete_directory, 1, 1, "FDelete directory: ", /*
|
|
0
|
2023 Delete a directory. One argument, a file name or directory name string.
|
|
20
|
2024 */
|
|
|
2025 (dirname))
|
|
0
|
2026 {
|
|
|
2027 /* This function can GC */
|
|
|
2028 Lisp_Object handler;
|
|
|
2029 struct gcpro gcpro1;
|
|
|
2030
|
|
|
2031 GCPRO1 (dirname);
|
|
|
2032 CHECK_STRING (dirname);
|
|
|
2033 dirname =
|
|
|
2034 Fdirectory_file_name (Fexpand_file_name (dirname, Qnil));
|
|
|
2035
|
|
|
2036 handler = Ffind_file_name_handler (dirname, Qdelete_directory);
|
|
|
2037 UNGCPRO;
|
|
|
2038 if (!NILP (handler))
|
|
|
2039 return (call2 (handler, Qdelete_directory, dirname));
|
|
|
2040
|
|
16
|
2041 if (rmdir ((char *) XSTRING_DATA (dirname)) != 0)
|
|
0
|
2042 report_file_error ("Removing directory", list1 (dirname));
|
|
|
2043
|
|
|
2044 return Qnil;
|
|
|
2045 }
|
|
|
2046
|
|
20
|
2047 DEFUN ("delete-file", Fdelete_file, 1, 1, "fDelete file: ", /*
|
|
0
|
2048 Delete specified file. One argument, a file name string.
|
|
|
2049 If file has multiple names, it continues to exist with the other names.
|
|
20
|
2050 */
|
|
|
2051 (filename))
|
|
0
|
2052 {
|
|
|
2053 /* This function can GC */
|
|
|
2054 Lisp_Object handler;
|
|
|
2055 struct gcpro gcpro1;
|
|
|
2056
|
|
|
2057 GCPRO1 (filename);
|
|
|
2058 CHECK_STRING (filename);
|
|
|
2059 filename = Fexpand_file_name (filename, Qnil);
|
|
|
2060
|
|
|
2061 handler = Ffind_file_name_handler (filename, Qdelete_file);
|
|
|
2062 UNGCPRO;
|
|
|
2063 if (!NILP (handler))
|
|
|
2064 return call2 (handler, Qdelete_file, filename);
|
|
|
2065
|
|
16
|
2066 if (0 > unlink ((char *) XSTRING_DATA (filename)))
|
|
0
|
2067 report_file_error ("Removing old name", list1 (filename));
|
|
|
2068 return Qnil;
|
|
|
2069 }
|
|
|
2070
|
|
|
2071 static Lisp_Object
|
|
|
2072 internal_delete_file_1 (Lisp_Object ignore, Lisp_Object ignore2)
|
|
|
2073 {
|
|
|
2074 return Qt;
|
|
|
2075 }
|
|
|
2076
|
|
|
2077 /* Delete file FILENAME, returning 1 if successful and 0 if failed. */
|
|
|
2078
|
|
|
2079 int
|
|
|
2080 internal_delete_file (Lisp_Object filename)
|
|
|
2081 {
|
|
|
2082 return NILP (condition_case_1 (Qt, Fdelete_file, filename,
|
|
|
2083 internal_delete_file_1, Qnil));
|
|
|
2084 }
|
|
|
2085
|
|
20
|
2086 DEFUN ("rename-file", Frename_file, 2, 3,
|
|
|
2087 "fRename file: \nFRename %s to file: \np", /*
|
|
0
|
2088 Rename FILE as NEWNAME. Both args strings.
|
|
|
2089 If file has names other than FILE, it continues to have those names.
|
|
|
2090 Signals a `file-already-exists' error if a file NEWNAME already exists
|
|
|
2091 unless optional third argument OK-IF-ALREADY-EXISTS is non-nil.
|
|
|
2092 A number as third arg means request confirmation if NEWNAME already exists.
|
|
|
2093 This is what happens in interactive use with M-x.
|
|
20
|
2094 */
|
|
|
2095 (filename, newname, ok_if_already_exists))
|
|
0
|
2096 {
|
|
|
2097 /* This function can GC */
|
|
|
2098 Lisp_Object handler;
|
|
|
2099 struct gcpro gcpro1, gcpro2;
|
|
|
2100
|
|
|
2101 GCPRO2 (filename, newname);
|
|
|
2102 CHECK_STRING (filename);
|
|
|
2103 CHECK_STRING (newname);
|
|
|
2104 filename = Fexpand_file_name (filename, Qnil);
|
|
|
2105 newname = Fexpand_file_name (newname, Qnil);
|
|
|
2106
|
|
|
2107 /* If the file name has special constructs in it,
|
|
|
2108 call the corresponding file handler. */
|
|
|
2109 handler = Ffind_file_name_handler (filename, Qrename_file);
|
|
|
2110 if (NILP (handler))
|
|
|
2111 handler = Ffind_file_name_handler (newname, Qrename_file);
|
|
|
2112 if (!NILP (handler))
|
|
|
2113 {
|
|
|
2114 UNGCPRO;
|
|
|
2115 return call4 (handler, Qrename_file,
|
|
|
2116 filename, newname, ok_if_already_exists);
|
|
|
2117 }
|
|
|
2118
|
|
|
2119 /* When second argument is a directory, rename the file into it.
|
|
|
2120 (rename-file "foo" "bar/") == (rename-file "foo" "bar/foo")
|
|
|
2121 */
|
|
|
2122 if (!NILP (Ffile_directory_p (newname)))
|
|
|
2123 {
|
|
|
2124 Lisp_Object args[3];
|
|
|
2125 struct gcpro ngcpro1;
|
|
|
2126 int i = 1;
|
|
|
2127
|
|
|
2128 args[0] = newname;
|
|
|
2129 args[1] = Qnil; args[2] = Qnil;
|
|
|
2130 NGCPRO1 (*args);
|
|
|
2131 ngcpro1.nvars = 3;
|
|
16
|
2132 if (XSTRING_BYTE (newname, XSTRING_LENGTH (newname) - 1) != '/')
|
|
0
|
2133 args[i++] = build_string ("/");
|
|
|
2134 args[i++] = Ffile_name_nondirectory (filename);
|
|
|
2135 newname = Fconcat (i, args);
|
|
|
2136 NUNGCPRO;
|
|
|
2137 }
|
|
|
2138
|
|
|
2139 if (NILP (ok_if_already_exists)
|
|
|
2140 || INTP (ok_if_already_exists))
|
|
|
2141 barf_or_query_if_file_exists (newname, "rename to it",
|
|
|
2142 INTP (ok_if_already_exists), 0);
|
|
|
2143
|
|
|
2144 #ifdef WINDOWSNT
|
|
|
2145 if (!MoveFile (XSTRING (filename)->data, XSTRING (newname)->data))
|
|
|
2146 #else /* not WINDOWSNT */
|
|
|
2147 /* FSFmacs only calls rename() here under BSD 4.1, and calls
|
|
|
2148 link() and unlink() otherwise, but that's bogus. Sometimes
|
|
|
2149 rename() succeeds where link()/unlink() fail, and we have
|
|
|
2150 configure check for rename() and emulate using link()/unlink()
|
|
|
2151 if necessary. */
|
|
16
|
2152 if (0 > rename ((char *) XSTRING_DATA (filename),
|
|
|
2153 (char *) XSTRING_DATA (newname)))
|
|
0
|
2154 #endif /* not WINDOWSNT */
|
|
|
2155 {
|
|
|
2156 #ifdef WINDOWSNT
|
|
|
2157 /* Why two? And why doesn't MS document what MoveFile will return? */
|
|
|
2158 if (GetLastError () == ERROR_FILE_EXISTS
|
|
|
2159 || GetLastError () == ERROR_ALREADY_EXISTS)
|
|
|
2160 #else /* not WINDOWSNT */
|
|
|
2161 if (errno == EXDEV)
|
|
|
2162 #endif /* not WINDOWSNT */
|
|
|
2163 {
|
|
|
2164 Fcopy_file (filename, newname,
|
|
|
2165 /* We have already prompted if it was an integer,
|
|
|
2166 so don't have copy-file prompt again. */
|
|
|
2167 ((NILP (ok_if_already_exists)) ? Qnil : Qt),
|
|
|
2168 Qt);
|
|
|
2169 Fdelete_file (filename);
|
|
|
2170 }
|
|
|
2171 else
|
|
|
2172 {
|
|
|
2173 report_file_error ("Renaming", list2 (filename, newname));
|
|
|
2174 }
|
|
|
2175 }
|
|
|
2176 UNGCPRO;
|
|
|
2177 return Qnil;
|
|
|
2178 }
|
|
|
2179
|
|
20
|
2180 DEFUN ("add-name-to-file", Fadd_name_to_file, 2, 3,
|
|
|
2181 "fAdd name to file: \nFName to add to %s: \np", /*
|
|
0
|
2182 Give FILE additional name NEWNAME. Both args strings.
|
|
|
2183 Signals a `file-already-exists' error if a file NEWNAME already exists
|
|
|
2184 unless optional third argument OK-IF-ALREADY-EXISTS is non-nil.
|
|
|
2185 A number as third arg means request confirmation if NEWNAME already exists.
|
|
|
2186 This is what happens in interactive use with M-x.
|
|
20
|
2187 */
|
|
|
2188 (filename, newname, ok_if_already_exists))
|
|
0
|
2189 {
|
|
|
2190 /* This function can GC */
|
|
|
2191 Lisp_Object handler;
|
|
|
2192 struct gcpro gcpro1, gcpro2;
|
|
|
2193
|
|
|
2194 GCPRO2 (filename, newname);
|
|
|
2195 CHECK_STRING (filename);
|
|
|
2196 CHECK_STRING (newname);
|
|
|
2197 filename = Fexpand_file_name (filename, Qnil);
|
|
|
2198 newname = Fexpand_file_name (newname, Qnil);
|
|
|
2199
|
|
|
2200 /* If the file name has special constructs in it,
|
|
|
2201 call the corresponding file handler. */
|
|
|
2202 handler = Ffind_file_name_handler (filename, Qadd_name_to_file);
|
|
|
2203 if (!NILP (handler))
|
|
|
2204 RETURN_UNGCPRO (call4 (handler, Qadd_name_to_file, filename,
|
|
|
2205 newname, ok_if_already_exists));
|
|
|
2206
|
|
|
2207 /* If the new name has special constructs in it,
|
|
|
2208 call the corresponding file handler. */
|
|
|
2209 handler = Ffind_file_name_handler (newname, Qadd_name_to_file);
|
|
|
2210 if (!NILP (handler))
|
|
|
2211 RETURN_UNGCPRO (call4 (handler, Qadd_name_to_file, filename,
|
|
|
2212 newname, ok_if_already_exists));
|
|
|
2213
|
|
|
2214 if (NILP (ok_if_already_exists)
|
|
|
2215 || INTP (ok_if_already_exists))
|
|
|
2216 barf_or_query_if_file_exists (newname, "make it a new name",
|
|
|
2217 INTP (ok_if_already_exists), 0);
|
|
|
2218 #ifdef WINDOWSNT
|
|
|
2219 /* Windows does not support this operation. */
|
|
|
2220 report_file_error ("Adding new name", Flist (2, &filename));
|
|
|
2221 #else /* not WINDOWSNT */
|
|
|
2222
|
|
16
|
2223 unlink ((char *) XSTRING_DATA (newname));
|
|
|
2224 if (0 > link ((char *) XSTRING_DATA (filename),
|
|
|
2225 (char *) XSTRING_DATA (newname)))
|
|
0
|
2226 {
|
|
|
2227 report_file_error ("Adding new name",
|
|
|
2228 list2 (filename, newname));
|
|
|
2229 }
|
|
|
2230 #endif /* not WINDOWSNT */
|
|
|
2231
|
|
|
2232 UNGCPRO;
|
|
|
2233 return Qnil;
|
|
|
2234 }
|
|
|
2235
|
|
|
2236 #ifdef S_IFLNK
|
|
20
|
2237 DEFUN ("make-symbolic-link", Fmake_symbolic_link, 2, 3,
|
|
|
2238 "FMake symbolic link to file: \nFMake symbolic link to file %s: \np", /*
|
|
0
|
2239 Make a symbolic link to FILENAME, named LINKNAME. Both args strings.
|
|
|
2240 Signals a `file-already-exists' error if a file LINKNAME already exists
|
|
|
2241 unless optional third argument OK-IF-ALREADY-EXISTS is non-nil.
|
|
|
2242 A number as third arg means request confirmation if LINKNAME already exists.
|
|
|
2243 This happens for interactive use with M-x.
|
|
20
|
2244 */
|
|
|
2245 (filename, linkname, ok_if_already_exists))
|
|
0
|
2246 {
|
|
|
2247 /* This function can GC */
|
|
|
2248 Lisp_Object handler;
|
|
|
2249 struct gcpro gcpro1, gcpro2;
|
|
|
2250
|
|
|
2251 GCPRO2 (filename, linkname);
|
|
|
2252 CHECK_STRING (filename);
|
|
|
2253 CHECK_STRING (linkname);
|
|
|
2254 /* If the link target has a ~, we must expand it to get
|
|
|
2255 a truly valid file name. Otherwise, do not expand;
|
|
|
2256 we want to permit links to relative file names. */
|
|
16
|
2257 if (XSTRING_BYTE (filename, 0) == '~') /* #### Un*x-specific */
|
|
0
|
2258 filename = Fexpand_file_name (filename, Qnil);
|
|
|
2259 linkname = Fexpand_file_name (linkname, Qnil);
|
|
|
2260
|
|
|
2261 /* If the file name has special constructs in it,
|
|
|
2262 call the corresponding file handler. */
|
|
|
2263 handler = Ffind_file_name_handler (filename, Qmake_symbolic_link);
|
|
|
2264 if (!NILP (handler))
|
|
|
2265 RETURN_UNGCPRO (call4 (handler, Qmake_symbolic_link, filename, linkname,
|
|
|
2266 ok_if_already_exists));
|
|
|
2267
|
|
|
2268 /* If the new link name has special constructs in it,
|
|
|
2269 call the corresponding file handler. */
|
|
|
2270 handler = Ffind_file_name_handler (linkname, Qmake_symbolic_link);
|
|
|
2271 if (!NILP (handler))
|
|
|
2272 RETURN_UNGCPRO (call4 (handler, Qmake_symbolic_link, filename,
|
|
|
2273 linkname, ok_if_already_exists));
|
|
|
2274
|
|
|
2275 if (NILP (ok_if_already_exists)
|
|
|
2276 || INTP (ok_if_already_exists))
|
|
|
2277 barf_or_query_if_file_exists (linkname, "make it a link",
|
|
|
2278 INTP (ok_if_already_exists), 0);
|
|
|
2279
|
|
16
|
2280 unlink ((char *) XSTRING_DATA (linkname));
|
|
|
2281 if (0 > symlink ((char *) XSTRING_DATA (filename),
|
|
|
2282 (char *) XSTRING_DATA (linkname)))
|
|
0
|
2283 {
|
|
|
2284 report_file_error ("Making symbolic link",
|
|
|
2285 list2 (filename, linkname));
|
|
|
2286 }
|
|
|
2287 UNGCPRO;
|
|
|
2288 return Qnil;
|
|
|
2289 }
|
|
|
2290 #endif /* S_IFLNK */
|
|
|
2291
|
|
|
2292 #ifdef VMS
|
|
|
2293
|
|
20
|
2294 DEFUN ("define-logical-name", Fdefine_logical_name, 2, 2,
|
|
|
2295 "sDefine logical name: \nsDefine logical name %s as: ", /*
|
|
0
|
2296 Define the job-wide logical name NAME to have the value STRING.
|
|
|
2297 If STRING is nil or a null string, the logical name NAME is deleted.
|
|
20
|
2298 */
|
|
|
2299 (varname, string))
|
|
0
|
2300 {
|
|
|
2301 CHECK_STRING (varname);
|
|
|
2302 if (NILP (string))
|
|
16
|
2303 delete_logical_name ((char *) XSTRING_DATA (varname));
|
|
0
|
2304 else
|
|
|
2305 {
|
|
|
2306 CHECK_STRING (string);
|
|
|
2307
|
|
16
|
2308 if (XSTRING_LENGTH (string) == 0)
|
|
|
2309 delete_logical_name ((char *) XSTRING_DATA (varname));
|
|
0
|
2310 else
|
|
16
|
2311 define_logical_name ((char *) XSTRING_DATA (varname), (char *) XSTRING_DATA (string));
|
|
0
|
2312 }
|
|
|
2313
|
|
|
2314 return string;
|
|
|
2315 }
|
|
|
2316 #endif /* VMS */
|
|
|
2317
|
|
|
2318 #ifdef HPUX_NET
|
|
|
2319
|
|
20
|
2320 DEFUN ("sysnetunam", Fsysnetunam, 2, 2, 0, /*
|
|
0
|
2321 Open a network connection to PATH using LOGIN as the login string.
|
|
20
|
2322 */
|
|
|
2323 (path, login))
|
|
0
|
2324 {
|
|
|
2325 int netresult;
|
|
|
2326
|
|
|
2327 CHECK_STRING (path);
|
|
|
2328 CHECK_STRING (login);
|
|
|
2329
|
|
|
2330 /* netunam, being a strange-o system call only used once, is not
|
|
|
2331 encapsulated. */
|
|
|
2332 {
|
|
|
2333 char *path_ext;
|
|
|
2334 char *login_ext;
|
|
|
2335
|
|
|
2336 GET_C_STRING_FILENAME_DATA_ALLOCA (path, path_ext);
|
|
|
2337 GET_C_STRING_EXT_DATA_ALLOCA (login, FORMAT_OS, login_ext);
|
|
|
2338
|
|
|
2339 netresult = netunam (path_ext, login_ext);
|
|
|
2340 }
|
|
|
2341
|
|
|
2342 if (netresult == -1)
|
|
|
2343 return Qnil;
|
|
|
2344 else
|
|
|
2345 return Qt;
|
|
|
2346 }
|
|
|
2347 #endif /* HPUX_NET */
|
|
|
2348
|
|
20
|
2349 DEFUN ("file-name-absolute-p", Ffile_name_absolute_p, 1, 1, 0, /*
|
|
0
|
2350 Return t if file FILENAME specifies an absolute path name.
|
|
|
2351 On Unix, this is a name starting with a `/' or a `~'.
|
|
20
|
2352 */
|
|
|
2353 (filename))
|
|
0
|
2354 {
|
|
|
2355 Bufbyte *ptr;
|
|
|
2356
|
|
|
2357 CHECK_STRING (filename);
|
|
16
|
2358 ptr = XSTRING_DATA (filename);
|
|
0
|
2359 if (IS_DIRECTORY_SEP (*ptr) || *ptr == '~'
|
|
|
2360 #ifdef VMS
|
|
|
2361 /* ??? This criterion is probably wrong for '<'. */
|
|
|
2362 || strchr (ptr, ':') || strchr (ptr, '<')
|
|
|
2363 || (*ptr == '[' && (ptr[1] != '-' || (ptr[2] != '.' && ptr[2] != ']'))
|
|
|
2364 && ptr[1] != '.')
|
|
|
2365 #endif /* VMS */
|
|
|
2366 #ifdef DOS_NT
|
|
|
2367 || (*ptr != 0 && ptr[1] == ':' && (ptr[2] == '/' || ptr[2] == '\\'))
|
|
|
2368 #endif
|
|
|
2369 )
|
|
|
2370 return Qt;
|
|
|
2371 else
|
|
|
2372 return Qnil;
|
|
|
2373 }
|
|
|
2374
|
|
|
2375 /* Return nonzero if file FILENAME exists and can be executed. */
|
|
|
2376
|
|
|
2377 static int
|
|
|
2378 check_executable (char *filename)
|
|
|
2379 {
|
|
|
2380 #ifdef DOS_NT
|
|
|
2381 int len = strlen (filename);
|
|
|
2382 char *suffix;
|
|
|
2383 struct stat st;
|
|
|
2384 if (stat (filename, &st) < 0)
|
|
|
2385 return 0;
|
|
|
2386 return (S_ISREG (st.st_mode)
|
|
|
2387 && len >= 5
|
|
|
2388 && (stricmp ((suffix = filename + len-4), ".com") == 0
|
|
|
2389 || stricmp (suffix, ".exe") == 0
|
|
|
2390 || stricmp (suffix, ".bat") == 0)
|
|
|
2391 || (st.st_mode & S_IFMT) == S_IFDIR);
|
|
|
2392 #else /* not DOS_NT */
|
|
|
2393 #ifdef HAVE_EACCESS
|
|
|
2394 return (eaccess (filename, 1) >= 0);
|
|
|
2395 #else
|
|
|
2396 /* Access isn't quite right because it uses the real uid
|
|
|
2397 and we really want to test with the effective uid.
|
|
|
2398 But Unix doesn't give us a right way to do it. */
|
|
|
2399 return (access (filename, 1) >= 0);
|
|
|
2400 #endif
|
|
|
2401 #endif /* not DOS_NT */
|
|
|
2402 }
|
|
|
2403
|
|
|
2404 /* Return nonzero if file FILENAME exists and can be written. */
|
|
|
2405
|
|
|
2406 static int
|
|
|
2407 check_writable (CONST char *filename)
|
|
|
2408 {
|
|
|
2409 #ifdef MSDOS
|
|
|
2410 struct stat st;
|
|
|
2411 if (stat (filename, &st) < 0)
|
|
|
2412 return 0;
|
|
|
2413 return (st.st_mode & S_IWRITE || (st.st_mode & S_IFMT) == S_IFDIR);
|
|
|
2414 #else /* not MSDOS */
|
|
|
2415 #ifdef HAVE_EACCESS
|
|
|
2416 return (eaccess (filename, 2) >= 0);
|
|
|
2417 #else
|
|
|
2418 /* Access isn't quite right because it uses the real uid
|
|
|
2419 and we really want to test with the effective uid.
|
|
|
2420 But Unix doesn't give us a right way to do it.
|
|
|
2421 Opening with O_WRONLY could work for an ordinary file,
|
|
|
2422 but would lose for directories. */
|
|
|
2423 return (access (filename, 2) >= 0);
|
|
|
2424 #endif
|
|
|
2425 #endif /* not MSDOS */
|
|
|
2426 }
|
|
|
2427
|
|
20
|
2428 DEFUN ("file-exists-p", Ffile_exists_p, 1, 1, 0, /*
|
|
0
|
2429 Return t if file FILENAME exists. (This does not mean you can read it.)
|
|
|
2430 See also `file-readable-p' and `file-attributes'.
|
|
20
|
2431 */
|
|
|
2432 (filename))
|
|
0
|
2433 {
|
|
|
2434 /* This function can GC */
|
|
|
2435 Lisp_Object abspath;
|
|
|
2436 Lisp_Object handler;
|
|
|
2437 struct stat statbuf;
|
|
|
2438 struct gcpro gcpro1;
|
|
|
2439
|
|
|
2440 GCPRO1 (filename);
|
|
|
2441 CHECK_STRING (filename);
|
|
|
2442 abspath = Fexpand_file_name (filename, Qnil);
|
|
|
2443 UNGCPRO;
|
|
|
2444
|
|
|
2445 /* If the file name has special constructs in it,
|
|
|
2446 call the corresponding file handler. */
|
|
|
2447 GCPRO1 (abspath);
|
|
|
2448 handler = Ffind_file_name_handler (abspath, Qfile_exists_p);
|
|
|
2449 UNGCPRO;
|
|
|
2450 if (!NILP (handler))
|
|
|
2451 return call2 (handler, Qfile_exists_p, abspath);
|
|
|
2452
|
|
16
|
2453 if (stat ((char *) XSTRING_DATA (abspath), &statbuf) >= 0)
|
|
0
|
2454 return (Qt);
|
|
|
2455 else
|
|
|
2456 return (Qnil);
|
|
|
2457 }
|
|
|
2458
|
|
20
|
2459 DEFUN ("file-executable-p", Ffile_executable_p, 1, 1, 0, /*
|
|
0
|
2460 Return t if FILENAME can be executed by you.
|
|
|
2461 For a directory, this means you can access files in that directory.
|
|
20
|
2462 */
|
|
|
2463 (filename))
|
|
0
|
2464 {
|
|
|
2465 /* This function can GC */
|
|
|
2466 Lisp_Object abspath;
|
|
|
2467 Lisp_Object handler;
|
|
|
2468 struct gcpro gcpro1;
|
|
|
2469
|
|
|
2470 GCPRO1 (filename);
|
|
|
2471 CHECK_STRING (filename);
|
|
|
2472 abspath = Fexpand_file_name (filename, Qnil);
|
|
|
2473 UNGCPRO;
|
|
|
2474
|
|
|
2475 /* If the file name has special constructs in it,
|
|
|
2476 call the corresponding file handler. */
|
|
|
2477 GCPRO1 (abspath);
|
|
|
2478 handler = Ffind_file_name_handler (abspath, Qfile_executable_p);
|
|
|
2479 UNGCPRO;
|
|
|
2480 if (!NILP (handler))
|
|
|
2481 return call2 (handler, Qfile_executable_p, abspath);
|
|
|
2482
|
|
16
|
2483 return (check_executable ((char *) XSTRING_DATA (abspath))
|
|
0
|
2484 ? Qt : Qnil);
|
|
|
2485 }
|
|
|
2486
|
|
20
|
2487 DEFUN ("file-readable-p", Ffile_readable_p, 1, 1, 0, /*
|
|
0
|
2488 Return t if file FILENAME exists and you can read it.
|
|
|
2489 See also `file-exists-p' and `file-attributes'.
|
|
20
|
2490 */
|
|
|
2491 (filename))
|
|
0
|
2492 {
|
|
|
2493 /* This function can GC */
|
|
|
2494 Lisp_Object abspath;
|
|
|
2495 Lisp_Object handler;
|
|
|
2496 int desc;
|
|
|
2497 struct gcpro gcpro1;
|
|
|
2498
|
|
|
2499 GCPRO1 (filename);
|
|
|
2500 CHECK_STRING (filename);
|
|
|
2501 abspath = Fexpand_file_name (filename, Qnil);
|
|
|
2502 UNGCPRO;
|
|
|
2503
|
|
|
2504 /* If the file name has special constructs in it,
|
|
|
2505 call the corresponding file handler. */
|
|
|
2506 GCPRO1 (abspath);
|
|
|
2507 handler = Ffind_file_name_handler (abspath, Qfile_readable_p);
|
|
|
2508 UNGCPRO;
|
|
|
2509 if (!NILP (handler))
|
|
|
2510 return call2 (handler, Qfile_readable_p, abspath);
|
|
|
2511
|
|
16
|
2512 desc = open ((char *) XSTRING_DATA (abspath), O_RDONLY, 0);
|
|
0
|
2513 if (desc < 0)
|
|
|
2514 return Qnil;
|
|
|
2515 close (desc);
|
|
|
2516 return Qt;
|
|
|
2517 }
|
|
|
2518
|
|
|
2519 /* Having this before file-symlink-p mysteriously caused it to be forgotten
|
|
|
2520 on the RT/PC. */
|
|
20
|
2521 DEFUN ("file-writable-p", Ffile_writable_p, 1, 1, 0, /*
|
|
0
|
2522 Return t if file FILENAME can be written or created by you.
|
|
20
|
2523 */
|
|
|
2524 (filename))
|
|
0
|
2525 {
|
|
|
2526 /* This function can GC */
|
|
|
2527 Lisp_Object abspath, dir;
|
|
|
2528 Lisp_Object handler;
|
|
|
2529 struct stat statbuf;
|
|
|
2530 struct gcpro gcpro1;
|
|
|
2531
|
|
|
2532 GCPRO1 (filename);
|
|
|
2533 CHECK_STRING (filename);
|
|
|
2534 abspath = Fexpand_file_name (filename, Qnil);
|
|
|
2535 UNGCPRO;
|
|
|
2536
|
|
|
2537 /* If the file name has special constructs in it,
|
|
|
2538 call the corresponding file handler. */
|
|
|
2539 GCPRO1 (abspath);
|
|
|
2540 handler = Ffind_file_name_handler (abspath, Qfile_writable_p);
|
|
|
2541 UNGCPRO;
|
|
|
2542 if (!NILP (handler))
|
|
|
2543 return call2 (handler, Qfile_writable_p, abspath);
|
|
|
2544
|
|
16
|
2545 if (stat ((char *) XSTRING_DATA (abspath), &statbuf) >= 0)
|
|
|
2546 return (check_writable ((char *) XSTRING_DATA (abspath))
|
|
0
|
2547 ? Qt : Qnil);
|
|
|
2548
|
|
|
2549
|
|
|
2550 dir = Ffile_name_directory (abspath);
|
|
|
2551 #if defined (VMS) || defined (MSDOS)
|
|
|
2552 if (!NILP (dir))
|
|
|
2553 dir = Fdirectory_file_name (dir);
|
|
|
2554 #endif /* VMS or MSDOS */
|
|
16
|
2555 return (check_writable (!NILP (dir) ? (char *) XSTRING_DATA (dir)
|
|
0
|
2556 : "")
|
|
|
2557 ? Qt : Qnil);
|
|
|
2558 }
|
|
|
2559
|
|
20
|
2560 DEFUN ("file-symlink-p", Ffile_symlink_p, 1, 1, 0, /*
|
|
0
|
2561 Return non-nil if file FILENAME is the name of a symbolic link.
|
|
|
2562 The value is the name of the file to which it is linked.
|
|
|
2563 Otherwise returns nil.
|
|
20
|
2564 */
|
|
|
2565 (filename))
|
|
0
|
2566 {
|
|
|
2567 /* This function can GC */
|
|
|
2568 #ifdef S_IFLNK
|
|
|
2569 char *buf;
|
|
|
2570 int bufsize;
|
|
|
2571 int valsize;
|
|
|
2572 Lisp_Object val;
|
|
|
2573 Lisp_Object handler;
|
|
|
2574 struct gcpro gcpro1;
|
|
|
2575
|
|
|
2576 GCPRO1 (filename);
|
|
|
2577 CHECK_STRING (filename);
|
|
|
2578 filename = Fexpand_file_name (filename, Qnil);
|
|
|
2579 UNGCPRO;
|
|
|
2580
|
|
|
2581 /* If the file name has special constructs in it,
|
|
|
2582 call the corresponding file handler. */
|
|
|
2583 handler = Ffind_file_name_handler (filename, Qfile_symlink_p);
|
|
|
2584 if (!NILP (handler))
|
|
|
2585 return call2 (handler, Qfile_symlink_p, filename);
|
|
|
2586
|
|
|
2587 bufsize = 100;
|
|
|
2588 while (1)
|
|
|
2589 {
|
|
|
2590 buf = (char *) xmalloc (bufsize);
|
|
|
2591 memset (buf, 0, bufsize);
|
|
16
|
2592 valsize = readlink ((char *) XSTRING_DATA (filename),
|
|
0
|
2593 buf, bufsize);
|
|
|
2594 if (valsize < bufsize) break;
|
|
|
2595 /* Buffer was not long enough */
|
|
|
2596 xfree (buf);
|
|
|
2597 bufsize *= 2;
|
|
|
2598 }
|
|
|
2599 if (valsize == -1)
|
|
|
2600 {
|
|
|
2601 xfree (buf);
|
|
|
2602 return Qnil;
|
|
|
2603 }
|
|
|
2604 val = make_string ((Bufbyte *) buf, valsize);
|
|
|
2605 xfree (buf);
|
|
|
2606 return val;
|
|
|
2607 #else /* not S_IFLNK */
|
|
|
2608 return Qnil;
|
|
|
2609 #endif /* not S_IFLNK */
|
|
|
2610 }
|
|
|
2611
|
|
20
|
2612 DEFUN ("file-directory-p", Ffile_directory_p, 1, 1, 0, /*
|
|
0
|
2613 Return t if file FILENAME is the name of a directory as a file.
|
|
|
2614 A directory name spec may be given instead; then the value is t
|
|
|
2615 if the directory so specified exists and really is a directory.
|
|
20
|
2616 */
|
|
|
2617 (filename))
|
|
0
|
2618 {
|
|
|
2619 /* This function can GC */
|
|
|
2620 Lisp_Object abspath;
|
|
|
2621 struct stat st;
|
|
|
2622 Lisp_Object handler;
|
|
|
2623 struct gcpro gcpro1;
|
|
|
2624
|
|
|
2625 GCPRO1 (filename);
|
|
|
2626 abspath = expand_and_dir_to_file (filename,
|
|
|
2627 current_buffer->directory);
|
|
|
2628 UNGCPRO;
|
|
|
2629
|
|
|
2630 /* If the file name has special constructs in it,
|
|
|
2631 call the corresponding file handler. */
|
|
|
2632 GCPRO1 (abspath);
|
|
|
2633 handler = Ffind_file_name_handler (abspath, Qfile_directory_p);
|
|
|
2634 UNGCPRO;
|
|
|
2635 if (!NILP (handler))
|
|
|
2636 return call2 (handler, Qfile_directory_p, abspath);
|
|
|
2637
|
|
16
|
2638 if (stat ((char *) XSTRING_DATA (abspath), &st) < 0)
|
|
0
|
2639 return Qnil;
|
|
|
2640 return (st.st_mode & S_IFMT) == S_IFDIR ? Qt : Qnil;
|
|
|
2641 }
|
|
|
2642
|
|
20
|
2643 DEFUN ("file-accessible-directory-p", Ffile_accessible_directory_p, 1, 1, 0, /*
|
|
0
|
2644 Return t if file FILENAME is the name of a directory as a file,
|
|
|
2645 and files in that directory can be opened by you. In order to use a
|
|
|
2646 directory as a buffer's current directory, this predicate must return true.
|
|
|
2647 A directory name spec may be given instead; then the value is t
|
|
|
2648 if the directory so specified exists and really is a readable and
|
|
|
2649 searchable directory.
|
|
20
|
2650 */
|
|
|
2651 (filename))
|
|
0
|
2652 {
|
|
|
2653 /* This function can GC */
|
|
|
2654 Lisp_Object handler;
|
|
|
2655 struct gcpro gcpro1;
|
|
|
2656
|
|
|
2657 /* If the file name has special constructs in it,
|
|
|
2658 call the corresponding file handler. */
|
|
|
2659 handler = Ffind_file_name_handler (filename, Qfile_accessible_directory_p);
|
|
|
2660 if (!NILP (handler))
|
|
|
2661 return call2 (handler, Qfile_accessible_directory_p,
|
|
|
2662 filename);
|
|
|
2663
|
|
|
2664 GCPRO1 (filename);
|
|
|
2665 if (NILP (Ffile_directory_p (filename)))
|
|
|
2666 {
|
|
|
2667 UNGCPRO;
|
|
|
2668 return (Qnil);
|
|
|
2669 }
|
|
|
2670 handler = Ffile_executable_p (filename);
|
|
|
2671 UNGCPRO;
|
|
|
2672 return (handler);
|
|
|
2673 }
|
|
|
2674
|
|
20
|
2675 DEFUN ("file-regular-p", Ffile_regular_p, 1, 1, 0, /*
|
|
0
|
2676 "Return t if file FILENAME is the name of a regular file.
|
|
|
2677 This is the sort of file that holds an ordinary stream of data bytes.
|
|
20
|
2678 */
|
|
|
2679 (filename))
|
|
0
|
2680 {
|
|
|
2681 REGISTER Lisp_Object abspath;
|
|
|
2682 struct stat st;
|
|
|
2683 Lisp_Object handler;
|
|
|
2684
|
|
|
2685 abspath = expand_and_dir_to_file (filename, current_buffer->directory);
|
|
|
2686
|
|
|
2687 /* If the file name has special constructs in it,
|
|
|
2688 call the corresponding file handler. */
|
|
|
2689 handler = Ffind_file_name_handler (abspath, Qfile_regular_p);
|
|
|
2690 if (!NILP (handler))
|
|
|
2691 return call2 (handler, Qfile_regular_p, abspath);
|
|
|
2692
|
|
16
|
2693 if (stat ((char *) XSTRING_DATA (abspath), &st) < 0)
|
|
0
|
2694 return Qnil;
|
|
|
2695 return (st.st_mode & S_IFMT) == S_IFREG ? Qt : Qnil;
|
|
|
2696 }
|
|
|
2697
|
|
20
|
2698 DEFUN ("file-modes", Ffile_modes, 1, 1, 0, /*
|
|
0
|
2699 Return mode bits of FILE, as an integer.
|
|
20
|
2700 */
|
|
|
2701 (filename))
|
|
0
|
2702 {
|
|
|
2703 /* This function can GC */
|
|
|
2704 Lisp_Object abspath;
|
|
|
2705 struct stat st;
|
|
|
2706 Lisp_Object handler;
|
|
|
2707 struct gcpro gcpro1;
|
|
|
2708
|
|
|
2709 GCPRO1 (filename);
|
|
|
2710 abspath = expand_and_dir_to_file (filename,
|
|
|
2711 current_buffer->directory);
|
|
|
2712 UNGCPRO;
|
|
|
2713
|
|
|
2714 /* If the file name has special constructs in it,
|
|
|
2715 call the corresponding file handler. */
|
|
|
2716 GCPRO1 (abspath);
|
|
|
2717 handler = Ffind_file_name_handler (abspath, Qfile_modes);
|
|
|
2718 UNGCPRO;
|
|
|
2719 if (!NILP (handler))
|
|
|
2720 return call2 (handler, Qfile_modes, abspath);
|
|
|
2721
|
|
16
|
2722 if (stat ((char *) XSTRING_DATA (abspath), &st) < 0)
|
|
0
|
2723 return Qnil;
|
|
|
2724 #ifdef DOS_NT
|
|
|
2725 if (check_executable (XSTRING (abspath)->data))
|
|
|
2726 st.st_mode |= S_IEXEC;
|
|
|
2727 #endif /* DOS_NT */
|
|
|
2728
|
|
|
2729 return make_int (st.st_mode & 07777);
|
|
|
2730 }
|
|
|
2731
|
|
20
|
2732 DEFUN ("set-file-modes", Fset_file_modes, 2, 2, 0, /*
|
|
0
|
2733 Set mode bits of FILE to MODE (an integer).
|
|
|
2734 Only the 12 low bits of MODE are used.
|
|
20
|
2735 */
|
|
|
2736 (filename, mode))
|
|
0
|
2737 {
|
|
|
2738 /* This function can GC */
|
|
|
2739 Lisp_Object abspath;
|
|
|
2740 Lisp_Object handler;
|
|
|
2741 struct gcpro gcpro1, gcpro2;
|
|
|
2742
|
|
|
2743 GCPRO2 (filename, mode);
|
|
|
2744 abspath = Fexpand_file_name (filename, current_buffer->directory);
|
|
|
2745 CHECK_INT (mode);
|
|
|
2746 UNGCPRO;
|
|
|
2747
|
|
|
2748 /* If the file name has special constructs in it,
|
|
|
2749 call the corresponding file handler. */
|
|
|
2750 GCPRO1 (abspath);
|
|
|
2751 handler = Ffind_file_name_handler (abspath, Qset_file_modes);
|
|
|
2752 UNGCPRO;
|
|
|
2753 if (!NILP (handler))
|
|
|
2754 return call3 (handler, Qset_file_modes, abspath, mode);
|
|
|
2755
|
|
16
|
2756 if (chmod ((char *) XSTRING_DATA (abspath), XINT (mode)) < 0)
|
|
0
|
2757 report_file_error ("Doing chmod", Fcons (abspath, Qnil));
|
|
|
2758
|
|
|
2759 return Qnil;
|
|
|
2760 }
|
|
|
2761
|
|
20
|
2762 DEFUN ("set-default-file-modes", Fset_default_file_modes, 1, 1, 0, /*
|
|
0
|
2763 Set the file permission bits for newly created files.
|
|
|
2764 MASK should be an integer; if a permission's bit in MASK is 1,
|
|
|
2765 subsequently created files will not have that permission enabled.
|
|
|
2766 Only the low 9 bits are used.
|
|
|
2767 This setting is inherited by subprocesses.
|
|
20
|
2768 */
|
|
|
2769 (mode))
|
|
0
|
2770 {
|
|
|
2771 CHECK_INT (mode);
|
|
|
2772
|
|
|
2773 umask ((~ XINT (mode)) & 0777);
|
|
|
2774
|
|
|
2775 return Qnil;
|
|
|
2776 }
|
|
|
2777
|
|
20
|
2778 DEFUN ("default-file-modes", Fdefault_file_modes, 0, 0, 0, /*
|
|
0
|
2779 Return the default file protection for created files.
|
|
|
2780 The umask value determines which permissions are enabled in newly
|
|
|
2781 created files. If a permission's bit in the umask is 1, subsequently
|
|
|
2782 created files will not have that permission enabled.
|
|
20
|
2783 */
|
|
|
2784 ())
|
|
0
|
2785 {
|
|
|
2786 int mode;
|
|
|
2787
|
|
|
2788 mode = umask (0);
|
|
|
2789 umask (mode);
|
|
|
2790
|
|
|
2791 return make_int ((~ mode) & 0777);
|
|
|
2792 }
|
|
|
2793
|
|
|
2794 #ifndef VMS
|
|
20
|
2795 DEFUN ("unix-sync", Funix_sync, 0, 0, "", /*
|
|
0
|
2796 Tell Unix to finish all pending disk updates.
|
|
20
|
2797 */
|
|
|
2798 ())
|
|
0
|
2799 {
|
|
|
2800 sync ();
|
|
|
2801 return Qnil;
|
|
|
2802 }
|
|
|
2803 #endif /* !VMS */
|
|
|
2804
|
|
|
2805
|
|
20
|
2806 DEFUN ("file-newer-than-file-p", Ffile_newer_than_file_p, 2, 2, 0, /*
|
|
0
|
2807 Return t if file FILE1 is newer than file FILE2.
|
|
|
2808 If FILE1 does not exist, the answer is nil;
|
|
|
2809 otherwise, if FILE2 does not exist, the answer is t.
|
|
20
|
2810 */
|
|
|
2811 (file1, file2))
|
|
0
|
2812 {
|
|
|
2813 /* This function can GC */
|
|
|
2814 Lisp_Object abspath1, abspath2;
|
|
|
2815 struct stat st;
|
|
|
2816 int mtime1;
|
|
|
2817 Lisp_Object handler;
|
|
|
2818 struct gcpro gcpro1, gcpro2;
|
|
|
2819
|
|
|
2820 CHECK_STRING (file1);
|
|
|
2821 CHECK_STRING (file2);
|
|
|
2822
|
|
|
2823 abspath1 = Qnil;
|
|
|
2824 GCPRO2 (abspath1, file2);
|
|
|
2825 abspath1 = expand_and_dir_to_file (file1,
|
|
|
2826 current_buffer->directory);
|
|
|
2827 abspath2 = expand_and_dir_to_file (file2,
|
|
|
2828 current_buffer->directory);
|
|
|
2829 UNGCPRO;
|
|
|
2830
|
|
|
2831 /* If the file name has special constructs in it,
|
|
|
2832 call the corresponding file handler. */
|
|
|
2833 GCPRO2 (abspath1, abspath2);
|
|
|
2834 handler = Ffind_file_name_handler (abspath1, Qfile_newer_than_file_p);
|
|
|
2835 if (NILP (handler))
|
|
|
2836 handler = Ffind_file_name_handler (abspath2, Qfile_newer_than_file_p);
|
|
|
2837 UNGCPRO;
|
|
|
2838 if (!NILP (handler))
|
|
|
2839 return call3 (handler, Qfile_newer_than_file_p, abspath1,
|
|
|
2840 abspath2);
|
|
|
2841
|
|
16
|
2842 if (stat ((char *) XSTRING_DATA (abspath1), &st) < 0)
|
|
0
|
2843 return Qnil;
|
|
|
2844
|
|
|
2845 mtime1 = st.st_mtime;
|
|
|
2846
|
|
16
|
2847 if (stat ((char *) XSTRING_DATA (abspath2), &st) < 0)
|
|
0
|
2848 return Qt;
|
|
|
2849
|
|
|
2850 return (mtime1 > st.st_mtime) ? Qt : Qnil;
|
|
|
2851 }
|
|
|
2852
|
|
|
2853
|
|
|
2854 #ifdef DOS_NT
|
|
|
2855 Lisp_Object Qfind_buffer_file_type;
|
|
|
2856 #endif /* DOS_NT */
|
|
|
2857
|
|
2
|
2858 /* Stack sizes > 2**16 is a good way to elicit compiler bugs */
|
|
|
2859 /* #define READ_BUF_SIZE (2 << 16) */
|
|
|
2860 #define READ_BUF_SIZE (1 << 15)
|
|
0
|
2861
|
|
20
|
2862 DEFUN ("insert-file-contents-internal",
|
|
|
2863 Finsert_file_contents_internal, 1, 5, 0, /*
|
|
0
|
2864 Insert contents of file FILENAME after point.
|
|
|
2865 Returns list of absolute file name and length of data inserted.
|
|
|
2866 If second argument VISIT is non-nil, the buffer's visited filename
|
|
|
2867 and last save file modtime are set, and it is marked unmodified.
|
|
|
2868 If visiting and the file does not exist, visiting is completed
|
|
|
2869 before the error is signaled.
|
|
|
2870
|
|
|
2871 The optional third and fourth arguments BEG and END
|
|
|
2872 specify what portion of the file to insert.
|
|
|
2873 If VISIT is non-nil, BEG and END must be nil.
|
|
|
2874 If optional fifth argument REPLACE is non-nil,
|
|
|
2875 it means replace the current buffer contents (in the accessible portion)
|
|
|
2876 with the file contents. This is better than simply deleting and inserting
|
|
|
2877 the whole thing because (1) it preserves some marker positions
|
|
|
2878 and (2) it puts less data in the undo list.
|
|
20
|
2879 */
|
|
|
2880 (filename, visit, beg, end, replace))
|
|
0
|
2881 {
|
|
|
2882 /* This function can GC */
|
|
|
2883 struct stat st;
|
|
|
2884 int fd;
|
|
|
2885 int saverrno = 0;
|
|
|
2886 Charcount inserted = 0;
|
|
|
2887 int speccount;
|
|
|
2888 struct gcpro gcpro1, gcpro2, gcpro3, gcpro4;
|
|
|
2889 Lisp_Object handler = Qnil, val;
|
|
|
2890 int total;
|
|
|
2891 Bufbyte read_buf[READ_BUF_SIZE];
|
|
|
2892 int mc_count;
|
|
|
2893 struct buffer *buf = current_buffer;
|
|
|
2894 int not_regular = 0;
|
|
|
2895
|
|
|
2896 if (buf->base_buffer && ! NILP (visit))
|
|
|
2897 error ("Cannot do file visiting in an indirect buffer");
|
|
|
2898
|
|
|
2899 /* No need to call Fbarf_if_buffer_read_only() here.
|
|
|
2900 That's called in begin_multiple_change() or wherever. */
|
|
|
2901
|
|
|
2902 val = Qnil;
|
|
|
2903
|
|
|
2904 GCPRO4 (filename, val, visit, handler);
|
|
|
2905
|
|
|
2906 mc_count = (NILP (replace)) ?
|
|
|
2907 begin_multiple_change (buf, BUF_PT (buf), BUF_PT (buf)) :
|
|
|
2908 begin_multiple_change (buf, BUF_BEG (buf), BUF_Z (buf));
|
|
|
2909
|
|
|
2910 speccount = specpdl_depth (); /* begin_multiple_change also adds
|
|
|
2911 an unwind_protect */
|
|
|
2912
|
|
|
2913 filename = Fexpand_file_name (filename, Qnil);
|
|
|
2914
|
|
|
2915 /* If the file name has special constructs in it,
|
|
|
2916 call the corresponding file handler. */
|
|
|
2917 handler = Ffind_file_name_handler (filename, Qinsert_file_contents);
|
|
|
2918 if (!NILP (handler))
|
|
|
2919 {
|
|
|
2920 val = call6 (handler, Qinsert_file_contents, filename,
|
|
16
|
2921 visit, beg, end, replace);
|
|
0
|
2922 goto handled;
|
|
|
2923 }
|
|
|
2924
|
|
|
2925 if ( (!NILP (beg) || !NILP (end)) && !NILP (visit) )
|
|
|
2926 error ("Attempt to visit less than an entire file");
|
|
|
2927
|
|
|
2928 if (!NILP (beg))
|
|
|
2929 CHECK_INT (beg);
|
|
|
2930 else
|
|
|
2931 beg = Qzero;
|
|
|
2932
|
|
|
2933 if (!NILP (end))
|
|
|
2934 CHECK_INT (end);
|
|
|
2935
|
|
|
2936 fd = -1;
|
|
|
2937
|
|
|
2938 #ifndef APOLLO
|
|
16
|
2939 if (stat ((char *) XSTRING_DATA (filename), &st) < 0)
|
|
0
|
2940 #else /* APOLLO */
|
|
16
|
2941 if ((fd = open ((char *) XSTRING_DATA (filename), O_RDONLY, 0)) < 0
|
|
0
|
2942 || fstat (fd, &st) < 0)
|
|
|
2943 #endif /* APOLLO */
|
|
|
2944 {
|
|
|
2945 if (fd >= 0) close (fd);
|
|
|
2946 badopen:
|
|
|
2947 if (NILP (visit))
|
|
|
2948 report_file_error ("Opening input file",
|
|
|
2949 Fcons (filename, Qnil));
|
|
|
2950 st.st_mtime = -1;
|
|
|
2951 goto notfound;
|
|
|
2952 }
|
|
|
2953
|
|
|
2954 #ifdef S_IFREG
|
|
|
2955 /* This code will need to be changed in order to work on named
|
|
|
2956 pipes, and it's probably just not worth it. So we should at
|
|
|
2957 least signal an error. */
|
|
|
2958 if (!S_ISREG (st.st_mode))
|
|
|
2959 {
|
|
|
2960 if (NILP (visit))
|
|
|
2961 {
|
|
|
2962 end_multiple_change (buf, mc_count);
|
|
|
2963
|
|
|
2964 return Fsignal (Qfile_error,
|
|
|
2965 list2 (build_translated_string("not a regular file"),
|
|
|
2966 filename));
|
|
|
2967 }
|
|
|
2968 else
|
|
|
2969 {
|
|
|
2970 not_regular = 1;
|
|
|
2971 goto notfound;
|
|
|
2972 }
|
|
|
2973 }
|
|
|
2974 #endif
|
|
|
2975
|
|
|
2976 if (fd < 0)
|
|
16
|
2977 if ((fd = open ((char *) XSTRING_DATA (filename), O_RDONLY, 0)) < 0)
|
|
0
|
2978 goto badopen;
|
|
|
2979
|
|
|
2980 /* Replacement should preserve point as it preserves markers. */
|
|
|
2981 if (!NILP (replace))
|
|
|
2982 record_unwind_protect (restore_point_unwind, Fpoint_marker (Qnil, Qnil));
|
|
|
2983
|
|
|
2984 record_unwind_protect (close_file_unwind, make_int (fd));
|
|
|
2985
|
|
|
2986 /* Supposedly happens on VMS. */
|
|
|
2987 if (st.st_size < 0)
|
|
|
2988 error ("File size is negative");
|
|
|
2989
|
|
|
2990 if (NILP (end))
|
|
|
2991 {
|
|
|
2992 end = make_int (st.st_size);
|
|
|
2993 if (XINT (end) != st.st_size)
|
|
|
2994 error ("maximum buffer size exceeded");
|
|
|
2995 }
|
|
|
2996
|
|
|
2997 /* If requested, replace the accessible part of the buffer
|
|
|
2998 with the file contents. Avoid replacing text at the
|
|
|
2999 beginning or end of the buffer that matches the file contents;
|
|
|
3000 that preserves markers pointing to the unchanged parts. */
|
|
16
|
3001 #if !defined (DOS_NT) && !defined (MULE)
|
|
0
|
3002 /* The replace-mode code currently only works when the assumption
|
|
|
3003 'one byte == one char' holds true. This fails under MSDOS and
|
|
|
3004 Windows NT (because newlines are represented as CR-LF in text
|
|
20
|
3005 files) and under Mule because files may contain multibyte characters. */
|
|
0
|
3006 # define FSFMACS_SPEEDY_INSERT
|
|
|
3007 #endif
|
|
|
3008 #ifndef FSFMACS_SPEEDY_INSERT
|
|
|
3009 if (!NILP (replace))
|
|
|
3010 {
|
|
|
3011 buffer_delete_range (buf, BUF_BEG (buf), BUF_Z (buf),
|
|
|
3012 !NILP (visit) ? INSDEL_NO_LOCKING : 0);
|
|
|
3013 }
|
|
|
3014 #else /* FSFMACS_SPEEDY_INSERT */
|
|
|
3015 if (!NILP (replace))
|
|
|
3016 {
|
|
|
3017 char buffer[1 << 14];
|
|
|
3018 Bufpos same_at_start = BUF_BEGV (buf);
|
|
|
3019 Bufpos same_at_end = BUF_ZV (buf);
|
|
|
3020 int overlap;
|
|
|
3021
|
|
|
3022 /* Count how many chars at the start of the file
|
|
|
3023 match the text at the beginning of the buffer. */
|
|
|
3024 while (1)
|
|
|
3025 {
|
|
|
3026 int nread;
|
|
|
3027 Bufpos bufpos;
|
|
|
3028
|
|
|
3029 nread = read_allowing_quit (fd, buffer, sizeof buffer);
|
|
|
3030 if (nread < 0)
|
|
|
3031 error ("IO error reading %s: %s",
|
|
16
|
3032 XSTRING_DATA (filename), strerror (errno));
|
|
0
|
3033 else if (nread == 0)
|
|
|
3034 break;
|
|
|
3035 bufpos = 0;
|
|
|
3036 while (bufpos < nread && same_at_start < BUF_ZV (buf)
|
|
|
3037 && BUF_FETCH_CHAR (buf, same_at_start) == buffer[bufpos])
|
|
|
3038 same_at_start++, bufpos++;
|
|
|
3039 /* If we found a discrepancy, stop the scan.
|
|
|
3040 Otherwise loop around and scan the next bufferfull. */
|
|
|
3041 if (bufpos != nread)
|
|
|
3042 break;
|
|
|
3043 }
|
|
|
3044 /* If the file matches the buffer completely,
|
|
|
3045 there's no need to replace anything. */
|
|
|
3046 if (same_at_start - BUF_BEGV (buf) == st.st_size)
|
|
|
3047 {
|
|
|
3048 close (fd);
|
|
|
3049 unbind_to (speccount, Qnil);
|
|
|
3050 /* Truncate the buffer to the size of the file. */
|
|
|
3051 buffer_delete_range (buf, same_at_start, same_at_end,
|
|
|
3052 !NILP (visit) ? INSDEL_NO_LOCKING : 0);
|
|
|
3053 goto handled;
|
|
|
3054 }
|
|
|
3055 /* Count how many chars at the end of the file
|
|
|
3056 match the text at the end of the buffer. */
|
|
|
3057 while (1)
|
|
|
3058 {
|
|
|
3059 int total_read, nread;
|
|
|
3060 Bufpos bufpos, curpos, trial;
|
|
|
3061
|
|
|
3062 /* At what file position are we now scanning? */
|
|
|
3063 curpos = st.st_size - (BUF_ZV (buf) - same_at_end);
|
|
|
3064 /* If the entire file matches the buffer tail, stop the scan. */
|
|
|
3065 if (curpos == 0)
|
|
|
3066 break;
|
|
|
3067 /* How much can we scan in the next step? */
|
|
|
3068 trial = min (curpos, sizeof buffer);
|
|
|
3069 if (lseek (fd, curpos - trial, 0) < 0)
|
|
|
3070 report_file_error ("Setting file position",
|
|
|
3071 Fcons (filename, Qnil));
|
|
|
3072
|
|
|
3073 total_read = 0;
|
|
|
3074 while (total_read < trial)
|
|
|
3075 {
|
|
|
3076 nread = read_allowing_quit (fd, buffer + total_read,
|
|
|
3077 trial - total_read);
|
|
|
3078 if (nread <= 0)
|
|
|
3079 error ("IO error reading %s: %s",
|
|
16
|
3080 XSTRING_DATA (filename), strerror (errno));
|
|
0
|
3081 total_read += nread;
|
|
|
3082 }
|
|
|
3083 /* Scan this bufferfull from the end, comparing with
|
|
|
3084 the Emacs buffer. */
|
|
|
3085 bufpos = total_read;
|
|
|
3086 /* Compare with same_at_start to avoid counting some buffer text
|
|
|
3087 as matching both at the file's beginning and at the end. */
|
|
|
3088 while (bufpos > 0 && same_at_end > same_at_start
|
|
|
3089 && BUF_FETCH_CHAR (buf, same_at_end - 1) ==
|
|
|
3090 buffer[bufpos - 1])
|
|
|
3091 same_at_end--, bufpos--;
|
|
|
3092 /* If we found a discrepancy, stop the scan.
|
|
|
3093 Otherwise loop around and scan the preceding bufferfull. */
|
|
|
3094 if (bufpos != 0)
|
|
|
3095 break;
|
|
|
3096 /* If display current starts at beginning of line,
|
|
|
3097 keep it that way. */
|
|
|
3098 if (XBUFFER (XWINDOW (Fselected_window (Qnil))->buffer) == buf)
|
|
|
3099 XWINDOW (Fselected_window (Qnil))->start_at_line_beg =
|
|
|
3100 !NILP (Fbolp (make_buffer (buf)));
|
|
|
3101 }
|
|
|
3102
|
|
|
3103 /* Don't try to reuse the same piece of text twice. */
|
|
|
3104 overlap = same_at_start - BUF_BEGV (buf) -
|
|
|
3105 (same_at_end + st.st_size - BUF_ZV (buf));
|
|
|
3106 if (overlap > 0)
|
|
|
3107 same_at_end += overlap;
|
|
|
3108
|
|
|
3109 /* Arrange to read only the nonmatching middle part of the file. */
|
|
|
3110 beg = make_int (same_at_start - BUF_BEGV (buf));
|
|
|
3111 end = make_int (st.st_size - (BUF_ZV (buf) - same_at_end));
|
|
|
3112
|
|
|
3113 buffer_delete_range (buf, same_at_start, same_at_end,
|
|
|
3114 !NILP (visit) ? INSDEL_NO_LOCKING : 0);
|
|
|
3115 /* Insert from the file at the proper position. */
|
|
|
3116 BUF_SET_PT (buf, same_at_start);
|
|
|
3117 }
|
|
|
3118 #endif /* FSFMACS_SPEEDY_INSERT */
|
|
|
3119
|
|
|
3120 total = XINT (end) - XINT (beg);
|
|
|
3121
|
|
|
3122 if (XINT (beg) != 0
|
|
|
3123 #ifdef FSFMACS_SPEEDY_INSERT
|
|
|
3124 /* why was this here? asked jwz. The reason is that the replace-mode
|
|
|
3125 connivings above will normally put the file pointer other than
|
|
|
3126 where it should be. */
|
|
|
3127 || !NILP (replace)
|
|
|
3128 #endif /* !FSFMACS_SPEEDY_INSERT */
|
|
|
3129 )
|
|
|
3130 {
|
|
|
3131 if (lseek (fd, XINT (beg), 0) < 0)
|
|
|
3132 report_file_error ("Setting file position",
|
|
|
3133 Fcons (filename, Qnil));
|
|
|
3134 }
|
|
|
3135
|
|
|
3136 {
|
|
|
3137 Bufpos cur_point = BUF_PT (buf);
|
|
|
3138 struct gcpro ngcpro1;
|
|
|
3139 Lisp_Object stream = make_filedesc_input_stream (fd, 0, total,
|
|
|
3140 LSTR_ALLOW_QUIT);
|
|
|
3141
|
|
|
3142 NGCPRO1 (stream);
|
|
|
3143 Lstream_set_buffering (XLSTREAM (stream), LSTREAM_BLOCKN_BUFFERED, 65536);
|
|
|
3144
|
|
|
3145 record_unwind_protect (close_stream_unwind, stream);
|
|
|
3146
|
|
16
|
3147 /* No need to limit the amount of stuff we attempt to read. (It would
|
|
|
3148 be incorrect, anyway, when Mule is enabled.) Instead, the limiting
|
|
|
3149 occurs inside of the filedesc stream. */
|
|
0
|
3150 while (1)
|
|
|
3151 {
|
|
|
3152 Bytecount this_len;
|
|
|
3153 Charcount cc_inserted;
|
|
|
3154
|
|
|
3155 QUIT;
|
|
|
3156 this_len = Lstream_read (XLSTREAM (stream), read_buf,
|
|
|
3157 sizeof (read_buf));
|
|
|
3158
|
|
|
3159 if (this_len <= 0)
|
|
|
3160 {
|
|
|
3161 if (this_len < 0)
|
|
|
3162 saverrno = errno;
|
|
|
3163 break;
|
|
|
3164 }
|
|
|
3165
|
|
|
3166 cc_inserted = buffer_insert_raw_string_1 (buf, cur_point, read_buf,
|
|
|
3167 this_len,
|
|
|
3168 !NILP (visit)
|
|
|
3169 ? INSDEL_NO_LOCKING : 0);
|
|
|
3170 inserted += cc_inserted;
|
|
|
3171 cur_point += cc_inserted;
|
|
|
3172 }
|
|
|
3173 NUNGCPRO;
|
|
|
3174 }
|
|
|
3175
|
|
|
3176 #ifdef DOS_NT
|
|
|
3177 /* Determine file type from name and remove LFs from CR-LFs if the file
|
|
|
3178 is deemed to be a text file. */
|
|
|
3179 {
|
|
|
3180 struct gcpro gcpro1;
|
|
|
3181 GCPRO1 (filename);
|
|
|
3182 buf->buffer_file_type
|
|
|
3183 = call1_in_buffer (buf, Qfind_buffer_file_type, filename);
|
|
|
3184 UNGCPRO;
|
|
|
3185 if (NILP (buf->buffer_file_type))
|
|
|
3186 {
|
|
|
3187 buffer_do_msdos_crlf_to_lf (buf, ####);
|
|
|
3188 }
|
|
|
3189 }
|
|
|
3190 #endif
|
|
|
3191
|
|
|
3192 /* Close the file/stream */
|
|
|
3193 unbind_to (speccount, Qnil);
|
|
|
3194
|
|
|
3195 if (saverrno != 0)
|
|
|
3196 {
|
|
|
3197 error ("IO error reading %s: %s",
|
|
16
|
3198 XSTRING_DATA (filename), strerror (saverrno));
|
|
0
|
3199 }
|
|
|
3200
|
|
|
3201 notfound:
|
|
|
3202 handled:
|
|
|
3203
|
|
|
3204 end_multiple_change (buf, mc_count);
|
|
|
3205
|
|
|
3206 if (!NILP (visit))
|
|
|
3207 {
|
|
|
3208 if (!EQ (buf->undo_list, Qt))
|
|
|
3209 buf->undo_list = Qnil;
|
|
|
3210 #ifdef APOLLO
|
|
16
|
3211 stat ((char *) XSTRING_DATA (filename), &st);
|
|
0
|
3212 #endif
|
|
|
3213 if (NILP (handler))
|
|
|
3214 {
|
|
|
3215 buf->modtime = st.st_mtime;
|
|
|
3216 buf->filename = filename;
|
|
|
3217 /* XEmacs addition: */
|
|
|
3218 /* This function used to be in C, ostensibly so that
|
|
|
3219 it could be called here. But that's just silly.
|
|
|
3220 There's no reason C code can't call out to Lisp
|
|
|
3221 code, and it's a lot cleaner this way. */
|
|
|
3222 if (!NILP (Ffboundp (Qcompute_buffer_file_truename)))
|
|
|
3223 call1 (Qcompute_buffer_file_truename, make_buffer (buf));
|
|
|
3224 }
|
|
|
3225 BUF_SAVE_MODIFF (buf) = BUF_MODIFF (buf);
|
|
|
3226 buf->auto_save_modified = BUF_MODIFF (buf);
|
|
|
3227 buf->save_length = make_int (BUF_SIZE (buf));
|
|
|
3228 #ifdef CLASH_DETECTION
|
|
|
3229 if (NILP (handler))
|
|
|
3230 {
|
|
|
3231 if (!NILP (buf->file_truename))
|
|
|
3232 unlock_file (buf->file_truename);
|
|
|
3233 unlock_file (filename);
|
|
|
3234 }
|
|
|
3235 #endif /* CLASH_DETECTION */
|
|
|
3236 if (not_regular)
|
|
|
3237 RETURN_UNGCPRO (Fsignal (Qfile_error,
|
|
|
3238 list2 (build_string ("not a regular file"),
|
|
|
3239 filename)));
|
|
|
3240
|
|
|
3241 /* If visiting nonexistent file, return nil. */
|
|
|
3242 if (buf->modtime == -1)
|
|
|
3243 report_file_error ("Opening input file",
|
|
|
3244 list1 (filename));
|
|
|
3245 }
|
|
|
3246
|
|
|
3247 /* Decode file format */
|
|
|
3248 if (inserted > 0)
|
|
|
3249 {
|
|
|
3250 Lisp_Object insval = call3 (Qformat_decode,
|
|
|
3251 Qnil, make_int (inserted), visit);
|
|
|
3252 CHECK_INT (insval);
|
|
|
3253 inserted = XINT (insval);
|
|
|
3254 }
|
|
|
3255
|
|
|
3256 if (inserted > 0)
|
|
|
3257 {
|
|
|
3258 Lisp_Object p = Vafter_insert_file_functions;
|
|
|
3259 struct gcpro ngcpro1;
|
|
|
3260
|
|
|
3261 NGCPRO1 (p);
|
|
|
3262 while (!NILP (p))
|
|
|
3263 {
|
|
|
3264 Lisp_Object insval =
|
|
|
3265 call1 (Fcar (p), make_int (inserted));
|
|
|
3266 if (!NILP (insval))
|
|
|
3267 {
|
|
|
3268 CHECK_NATNUM (insval);
|
|
|
3269 inserted = XINT (insval);
|
|
|
3270 }
|
|
|
3271 QUIT;
|
|
|
3272 p = Fcdr (p);
|
|
|
3273 }
|
|
|
3274 NUNGCPRO;
|
|
|
3275 }
|
|
|
3276
|
|
|
3277 UNGCPRO;
|
|
|
3278
|
|
|
3279 if (!NILP (val))
|
|
|
3280 return (val);
|
|
|
3281 else
|
|
|
3282 return (list2 (filename, make_int (inserted)));
|
|
|
3283 }
|
|
|
3284
|
|
|
3285
|
|
|
3286 static int a_write (Lisp_Object outstream, Lisp_Object instream, int pos,
|
|
|
3287 Lisp_Object *annot);
|
|
|
3288 static Lisp_Object build_annotations (Lisp_Object start, Lisp_Object end);
|
|
|
3289
|
|
|
3290 /* If build_annotations switched buffers, switch back to BUF.
|
|
|
3291 Kill the temporary buffer that was selected in the meantime. */
|
|
|
3292
|
|
|
3293 static Lisp_Object
|
|
|
3294 build_annotations_unwind (Lisp_Object buf)
|
|
|
3295 {
|
|
|
3296 Lisp_Object tembuf;
|
|
|
3297
|
|
|
3298 if (XBUFFER (buf) == current_buffer)
|
|
|
3299 return Qnil;
|
|
|
3300 tembuf = Fcurrent_buffer ();
|
|
|
3301 Fset_buffer (buf);
|
|
|
3302 Fkill_buffer (tembuf);
|
|
|
3303 return Qnil;
|
|
|
3304 }
|
|
|
3305
|
|
20
|
3306 DEFUN ("write-region-internal", Fwrite_region_internal, 3, 6,
|
|
|
3307 "r\nFWrite region to file: ", /*
|
|
0
|
3308 Write current region into specified file.
|
|
|
3309 When called from a program, takes three arguments:
|
|
|
3310 START, END and FILENAME. START and END are buffer positions.
|
|
|
3311 Optional fourth argument APPEND if non-nil means
|
|
|
3312 append to existing file contents (if any).
|
|
|
3313 Optional fifth argument VISIT if t means
|
|
|
3314 set the last-save-file-modtime of buffer to this file's modtime
|
|
|
3315 and mark buffer not modified.
|
|
|
3316 If VISIT is a string, it is a second file name;
|
|
|
3317 the output goes to FILENAME, but the buffer is marked as visiting VISIT.
|
|
|
3318 VISIT is also the file name to lock and unlock for clash detection.
|
|
|
3319 If VISIT is neither t nor nil nor a string,
|
|
|
3320 that means do not print the \"Wrote file\" message.
|
|
|
3321 Kludgy feature: if START is a string, then that string is written
|
|
|
3322 to the file, instead of any buffer contents, and END is ignored.
|
|
20
|
3323 */
|
|
|
3324 (start, end, filename, append, visit, lockname))
|
|
0
|
3325 {
|
|
|
3326 /* This function can GC */
|
|
|
3327 int desc;
|
|
|
3328 int failure;
|
|
|
3329 int save_errno = 0;
|
|
|
3330 struct stat st;
|
|
|
3331 Lisp_Object fn;
|
|
|
3332 int speccount = specpdl_depth ();
|
|
|
3333 #ifdef VMS
|
|
|
3334 unsigned char *fname = 0; /* If non-0, original filename (must rename) */
|
|
|
3335 #endif /* VMS */
|
|
|
3336 int visiting_other = STRINGP (visit);
|
|
|
3337 int visiting = (EQ (visit, Qt) || visiting_other);
|
|
|
3338 int quietly = (!visiting && !NILP (visit));
|
|
|
3339 Lisp_Object visit_file = Qnil;
|
|
|
3340 Lisp_Object annotations = Qnil;
|
|
|
3341 struct buffer *given_buffer;
|
|
|
3342 Bufpos start1, end1;
|
|
|
3343
|
|
|
3344 #ifdef DOS_NT
|
|
|
3345 int buffer_file_type
|
|
|
3346 = NILP (current_buffer->buffer_file_type) ? O_TEXT : O_BINARY;
|
|
|
3347 #endif /* DOS_NT */
|
|
|
3348
|
|
|
3349 if (current_buffer->base_buffer && ! NILP (visit))
|
|
|
3350 error ("Cannot do file visiting in an indirect buffer");
|
|
|
3351
|
|
|
3352 if (!NILP (start) && !STRINGP (start))
|
|
|
3353 get_buffer_range_char (current_buffer, start, end, &start1, &end1, 0);
|
|
|
3354
|
|
|
3355 {
|
|
|
3356 Lisp_Object handler;
|
|
|
3357 struct gcpro gcpro1, gcpro2, gcpro3, gcpro4, gcpro5;
|
|
|
3358 GCPRO5 (start, filename, visit, visit_file, lockname);
|
|
|
3359
|
|
|
3360 if (visiting_other)
|
|
|
3361 visit_file = Fexpand_file_name (visit, Qnil);
|
|
|
3362 else
|
|
|
3363 visit_file = filename;
|
|
|
3364 filename = Fexpand_file_name (filename, Qnil);
|
|
|
3365
|
|
|
3366 UNGCPRO;
|
|
|
3367
|
|
|
3368 if (NILP (lockname))
|
|
|
3369 lockname = visit_file;
|
|
|
3370
|
|
|
3371 /* If the file name has special constructs in it,
|
|
|
3372 call the corresponding file handler. */
|
|
|
3373 handler = Ffind_file_name_handler (filename, Qwrite_region);
|
|
|
3374 /* If FILENAME has no handler, see if VISIT has one. */
|
|
|
3375 if (NILP (handler) && STRINGP (visit))
|
|
|
3376 handler = Ffind_file_name_handler (visit, Qwrite_region);
|
|
|
3377
|
|
|
3378 if (!NILP (handler))
|
|
|
3379 {
|
|
|
3380 Lisp_Object val = call6 (handler, Qwrite_region, start, end,
|
|
|
3381 filename, append, visit);
|
|
|
3382 if (visiting)
|
|
|
3383 {
|
|
|
3384 BUF_SAVE_MODIFF (current_buffer) = BUF_MODIFF (current_buffer);
|
|
|
3385 current_buffer->save_length =
|
|
|
3386 make_int (BUF_SIZE (current_buffer));
|
|
|
3387 current_buffer->filename = visit_file;
|
|
|
3388 MARK_MODELINE_CHANGED;
|
|
|
3389 }
|
|
|
3390 return val;
|
|
|
3391 }
|
|
|
3392 }
|
|
|
3393
|
|
|
3394 #ifdef CLASH_DETECTION
|
|
|
3395 if (!auto_saving)
|
|
|
3396 {
|
|
|
3397 struct gcpro gcpro1, gcpro2, gcpro3, gcpro4;
|
|
|
3398 GCPRO4 (start, filename, visit_file, lockname);
|
|
|
3399 lock_file (lockname);
|
|
|
3400 UNGCPRO;
|
|
|
3401 }
|
|
|
3402 #endif /* CLASH_DETECTION */
|
|
|
3403
|
|
|
3404 /* Special kludge to simplify auto-saving. */
|
|
|
3405 if (NILP (start))
|
|
|
3406 {
|
|
|
3407 start1 = BUF_BEG (current_buffer);
|
|
|
3408 end1 = BUF_Z (current_buffer);
|
|
|
3409 }
|
|
|
3410
|
|
|
3411 record_unwind_protect (build_annotations_unwind, Fcurrent_buffer ());
|
|
|
3412
|
|
|
3413 given_buffer = current_buffer;
|
|
|
3414 annotations = build_annotations (start, end);
|
|
|
3415 if (current_buffer != given_buffer)
|
|
|
3416 {
|
|
|
3417 start1 = BUF_BEGV (current_buffer);
|
|
|
3418 end1 = BUF_ZV (current_buffer);
|
|
|
3419 }
|
|
|
3420
|
|
|
3421 fn = filename;
|
|
|
3422 desc = -1;
|
|
|
3423 if (!NILP (append))
|
|
|
3424 #ifdef DOS_NT
|
|
16
|
3425 desc = open ((char *) XSTRING_DATA (fn),
|
|
0
|
3426 (O_WRONLY | buffer_file_type), 0);
|
|
|
3427 #else /* not DOS_NT */
|
|
16
|
3428 desc = open ((char *) XSTRING_DATA (fn), O_WRONLY, 0);
|
|
0
|
3429 #endif /* not DOS_NT */
|
|
|
3430
|
|
|
3431 if (desc < 0)
|
|
|
3432 #ifndef VMS
|
|
|
3433 {
|
|
|
3434 #ifdef DOS_NT
|
|
16
|
3435 desc = open ((char *) XSTRING_DATA (fn),
|
|
0
|
3436 (O_WRONLY | O_TRUNC | O_CREAT | buffer_file_type),
|
|
|
3437 (S_IREAD | S_IWRITE));
|
|
|
3438 #else /* not DOS_NT */
|
|
16
|
3439 desc = creat ((char *) XSTRING_DATA (fn),
|
|
0
|
3440 ((auto_saving) ? auto_save_mode_bits : 0666));
|
|
|
3441 #endif /* DOS_NT */
|
|
|
3442 }
|
|
|
3443 #else /* VMS */
|
|
|
3444 {
|
|
|
3445 if (auto_saving) /* Overwrite any previous version of autosave file */
|
|
|
3446 {
|
|
16
|
3447 char *fn_data = XSTRING_DATA (fn);
|
|
0
|
3448 /* if fn exists, truncate to zero length */
|
|
|
3449 vms_truncate (fn_data);
|
|
|
3450 desc = open (fn_data, O_RDWR, 0);
|
|
|
3451 if (desc < 0)
|
|
|
3452 desc = creat_copy_attrs ((STRINGP (current_buffer->filename)
|
|
16
|
3453 ? (char *)
|
|
|
3454 XSTRING_DATA (current_buffer->filename)
|
|
0
|
3455 : 0),
|
|
|
3456 fn_data);
|
|
|
3457 }
|
|
|
3458 else /* Write to temporary name and rename if no errors */
|
|
|
3459 {
|
|
|
3460 Lisp_Object temp_name;
|
|
|
3461
|
|
|
3462 struct gcpro gcpro1, gcpro2, gcpro3;
|
|
|
3463 GCPRO3 (start, filename, visit_file);
|
|
|
3464 {
|
|
|
3465 struct gcpro gcpro1, gcpro2, gcpro3; /* Don't have GCPRO6 */
|
|
|
3466
|
|
|
3467 GCPRO3 (fn, fname, annotations);
|
|
|
3468
|
|
|
3469 temp_name = Ffile_name_directory (filename);
|
|
|
3470
|
|
|
3471 if (NILP (temp_name))
|
|
16
|
3472 desc = creat ((char *) XSTRING_DATA (fn), 0666);
|
|
0
|
3473 else
|
|
|
3474 {
|
|
|
3475 temp_name =
|
|
|
3476 Fmake_temp_name (concat2 (temp_name,
|
|
|
3477 build_string ("$$SAVE$$")));
|
|
|
3478 fname = filename;
|
|
|
3479 fn = temp_name;
|
|
|
3480 desc = creat_copy_attrs (fname,
|
|
16
|
3481 (char *) XSTRING_DATA (fn));
|
|
0
|
3482 if (desc < 0)
|
|
|
3483 {
|
|
|
3484 char *fn_data;
|
|
|
3485 /* If we can't open the temporary file, try creating a new
|
|
|
3486 version of the original file. VMS "creat" creates a
|
|
|
3487 new version rather than truncating an existing file. */
|
|
|
3488 fn = fname;
|
|
|
3489 fname = Qnil;
|
|
16
|
3490 fn_data = XSTRING_DATA (fn);
|
|
0
|
3491 desc = creat (fn_data, 0666);
|
|
|
3492 #if 0 /* This can clobber an existing file and fail
|
|
|
3493 to replace it, if the user runs out of
|
|
|
3494 space. */
|
|
|
3495 if (desc < 0)
|
|
|
3496 {
|
|
|
3497 /* We can't make a new version;
|
|
|
3498 try to truncate and rewrite existing version if any.
|
|
|
3499 */
|
|
|
3500 vms_truncate (fn_data);
|
|
|
3501 desc = open (fn_data, O_RDWR, 0);
|
|
|
3502 }
|
|
|
3503 #endif
|
|
|
3504 }
|
|
|
3505 }
|
|
|
3506 UNGCPRO;
|
|
|
3507 }
|
|
|
3508 UNGCPRO;
|
|
|
3509 }
|
|
|
3510 }
|
|
|
3511 #endif /* VMS */
|
|
|
3512
|
|
|
3513 if (desc < 0)
|
|
|
3514 {
|
|
|
3515 #ifdef CLASH_DETECTION
|
|
|
3516 save_errno = errno;
|
|
|
3517 if (!auto_saving) unlock_file (lockname);
|
|
|
3518 errno = save_errno;
|
|
|
3519 #endif /* CLASH_DETECTION */
|
|
|
3520 report_file_error ("Opening output file",
|
|
|
3521 Fcons (filename, Qnil));
|
|
|
3522 }
|
|
|
3523
|
|
|
3524 {
|
|
|
3525 Lisp_Object desc_locative = Fcons (make_int (desc), Qnil);
|
|
|
3526 Lisp_Object instream = Qnil, outstream = Qnil;
|
|
|
3527 struct gcpro gcpro1, gcpro2;
|
|
|
3528 /* need to gcpro; QUIT could happen out of call to write() */
|
|
|
3529 GCPRO2 (instream, outstream);
|
|
|
3530
|
|
|
3531 record_unwind_protect (close_file_unwind, desc_locative);
|
|
|
3532
|
|
|
3533 if (!NILP (append))
|
|
|
3534 {
|
|
|
3535 if (lseek (desc, 0, 2) < 0)
|
|
|
3536 {
|
|
|
3537 #ifdef CLASH_DETECTION
|
|
|
3538 if (!auto_saving) unlock_file (lockname);
|
|
|
3539 #endif /* CLASH_DETECTION */
|
|
|
3540 report_file_error ("Lseek error",
|
|
|
3541 list1 (filename));
|
|
|
3542 }
|
|
|
3543 }
|
|
|
3544
|
|
|
3545 #ifdef VMS
|
|
|
3546 /*
|
|
|
3547 * Kludge Warning: The VMS C RTL likes to insert carriage returns
|
|
|
3548 * if we do writes that don't end with a carriage return. Furthermore
|
|
|
3549 * it cannot handle writes of more then 16K. The modified
|
|
|
3550 * version of "sys_write" in SYSDEP.C (see comment there) copes with
|
|
|
3551 * this EXCEPT for the last record (iff it doesn't end with a carriage
|
|
|
3552 * return). This implies that if your buffer doesn't end with a carriage
|
|
|
3553 * return, you get one free... tough. However it also means that if
|
|
|
3554 * we make two calls to sys_write (a la the following code) you can
|
|
|
3555 * get one at the gap as well. The easiest way to fix this (honest)
|
|
|
3556 * is to move the gap to the next newline (or the end of the buffer).
|
|
|
3557 * Thus this change.
|
|
|
3558 *
|
|
|
3559 * Yech!
|
|
|
3560 */
|
|
|
3561 you lose -- fix this
|
|
|
3562 if (GPT > BUF_BEG (current_buffer) && *GPT_ADDR[-1] != '\n')
|
|
|
3563 move_gap (find_next_newline (current_buffer, GPT, 1));
|
|
|
3564 #endif
|
|
|
3565
|
|
|
3566 failure = 0;
|
|
|
3567
|
|
|
3568 /* Note: I tried increasing the buffering size, along with
|
|
|
3569 various other tricks, but nothing seemed to make much of
|
|
|
3570 a difference in the time it took to save a large file.
|
|
|
3571 (Actually that's not true. With a local disk, changing
|
|
|
3572 the buffer size doesn't seem to make much difference.
|
|
|
3573 With an NFS-mounted disk, it could make a lot of difference
|
|
|
3574 because you're affecting the number of network requests
|
|
|
3575 that need to be made, and there could be a large latency
|
|
|
3576 for each request. So I've increased the buffer size
|
|
|
3577 to 64K.) */
|
|
|
3578 outstream = make_filedesc_output_stream (desc, 0, -1, 0);
|
|
|
3579 Lstream_set_buffering (XLSTREAM (outstream),
|
|
|
3580 LSTREAM_BLOCKN_BUFFERED, 65536);
|
|
|
3581 if (STRINGP (start))
|
|
|
3582 {
|
|
|
3583 instream = make_lisp_string_input_stream (start, 0, -1);
|
|
|
3584 start1 = 0;
|
|
|
3585 }
|
|
|
3586 else
|
|
|
3587 instream = make_lisp_buffer_input_stream (current_buffer, start1, end1,
|
|
|
3588 LSTR_SELECTIVE |
|
|
|
3589 LSTR_IGNORE_ACCESSIBLE);
|
|
|
3590 failure = (0 > (a_write (outstream, instream, start1,
|
|
|
3591 &annotations)));
|
|
|
3592 save_errno = errno;
|
|
|
3593 /* Note that this doesn't close the desc since we created the
|
|
|
3594 stream without the LSTR_CLOSING flag, but it does
|
|
|
3595 flush out any buffered data. */
|
|
|
3596 if (Lstream_close (XLSTREAM (outstream)) < 0)
|
|
|
3597 {
|
|
|
3598 failure = 1;
|
|
|
3599 save_errno = errno;
|
|
|
3600 }
|
|
|
3601 Lstream_close (XLSTREAM (instream));
|
|
|
3602 UNGCPRO;
|
|
|
3603
|
|
|
3604 #ifdef HAVE_FSYNC
|
|
|
3605 /* Note fsync appears to change the modtime on BSD4.2 (both vax and sun).
|
|
|
3606 Disk full in NFS may be reported here. */
|
|
|
3607 /* mib says that closing the file will try to write as fast as NFS can do
|
|
|
3608 it, and that means the fsync here is not crucial for autosave files. */
|
|
|
3609 if (!auto_saving && fsync (desc) < 0
|
|
|
3610 /* If fsync fails with EINTR, don't treat that as serious. */
|
|
|
3611 && errno != EINTR)
|
|
|
3612 {
|
|
|
3613 failure = 1;
|
|
|
3614 save_errno = errno;
|
|
|
3615 }
|
|
|
3616 #endif
|
|
|
3617
|
|
|
3618 /* Spurious "file has changed on disk" warnings have been
|
|
|
3619 observed on Suns as well.
|
|
|
3620 It seems that `close' can change the modtime, under nfs.
|
|
|
3621
|
|
|
3622 (This has supposedly been fixed in Sunos 4,
|
|
|
3623 but who knows about all the other machines with NFS?) */
|
|
|
3624 /* On VMS and APOLLO, must do the stat after the close
|
|
|
3625 since closing changes the modtime. */
|
|
|
3626 #if 0 /* !defined (VMS) && !defined (APOLLO) */
|
|
|
3627 fstat (desc, &st);
|
|
|
3628 #endif
|
|
|
3629
|
|
|
3630 /* NFS can report a write failure now. */
|
|
|
3631 if (close (desc) < 0)
|
|
|
3632 {
|
|
|
3633 failure = 1;
|
|
|
3634 save_errno = errno;
|
|
|
3635 }
|
|
|
3636
|
|
|
3637 /* Discard the close unwind-protect. Execute the one for
|
|
|
3638 build_annotations (switches back to the original current buffer
|
|
|
3639 as necessary). */
|
|
|
3640 XCAR (desc_locative) = Qnil;
|
|
|
3641 unbind_to (speccount, Qnil);
|
|
|
3642 }
|
|
|
3643
|
|
|
3644
|
|
|
3645 #ifdef VMS
|
|
|
3646 /* If we wrote to a temporary name and had no errors, rename to real name. */
|
|
|
3647 if (!NILP (fname))
|
|
|
3648 {
|
|
|
3649 if (!failure)
|
|
|
3650 {
|
|
16
|
3651 failure = (rename ((char *) XSTRING_DATA (fn),
|
|
|
3652 (char *) XSTRING_DATA (fname))
|
|
0
|
3653 != 0);
|
|
|
3654 save_errno = errno;
|
|
|
3655 }
|
|
|
3656 fn = fname;
|
|
|
3657 }
|
|
|
3658 #endif /* VMS */
|
|
|
3659
|
|
|
3660 #if 1 /* defined (VMS) || defined (APOLLO) */
|
|
16
|
3661 stat ((char *) XSTRING_DATA (fn), &st);
|
|
0
|
3662 #endif
|
|
|
3663
|
|
|
3664 #ifdef CLASH_DETECTION
|
|
|
3665 if (!auto_saving)
|
|
|
3666 unlock_file (lockname);
|
|
|
3667 #endif /* CLASH_DETECTION */
|
|
|
3668
|
|
|
3669 /* Do this before reporting IO error
|
|
|
3670 to avoid a "file has changed on disk" warning on
|
|
|
3671 next attempt to save. */
|
|
|
3672 if (visiting)
|
|
|
3673 current_buffer->modtime = st.st_mtime;
|
|
|
3674
|
|
|
3675 if (failure)
|
|
|
3676 error ("IO error writing %s: %s",
|
|
16
|
3677 XSTRING_DATA (fn),
|
|
0
|
3678 strerror (save_errno));
|
|
|
3679
|
|
|
3680 if (visiting)
|
|
|
3681 {
|
|
|
3682 BUF_SAVE_MODIFF (current_buffer) = BUF_MODIFF (current_buffer);
|
|
|
3683 current_buffer->save_length = make_int (BUF_SIZE (current_buffer));
|
|
|
3684 current_buffer->filename = visit_file;
|
|
|
3685 MARK_MODELINE_CHANGED;
|
|
|
3686 }
|
|
|
3687 else if (quietly)
|
|
|
3688 {
|
|
|
3689 return Qnil;
|
|
|
3690 }
|
|
|
3691
|
|
|
3692 if (!auto_saving)
|
|
|
3693 {
|
|
|
3694 if (visiting_other)
|
|
16
|
3695 message ("Wrote %s", XSTRING_DATA (visit_file));
|
|
0
|
3696 else
|
|
|
3697 {
|
|
|
3698 struct gcpro gcpro1;
|
|
|
3699 Lisp_Object fsp;
|
|
|
3700 GCPRO1 (fn);
|
|
|
3701
|
|
|
3702 fsp = Ffile_symlink_p (fn);
|
|
|
3703 if (NILP (fsp))
|
|
16
|
3704 message ("Wrote %s", XSTRING_DATA (fn));
|
|
0
|
3705 else
|
|
|
3706 message ("Wrote %s (symlink to %s)",
|
|
16
|
3707 XSTRING_DATA (fn), XSTRING_DATA (fsp));
|
|
0
|
3708 UNGCPRO;
|
|
|
3709 }
|
|
|
3710 }
|
|
|
3711 return Qnil;
|
|
|
3712 }
|
|
|
3713
|
|
|
3714 /* #### This is such a load of shit!!!! There is no way we should define
|
|
|
3715 something so stupid as a subr, just sort the fucking list more
|
|
|
3716 intelligently. */
|
|
20
|
3717 DEFUN ("car-less-than-car", Fcar_less_than_car, 2, 2, 0, /*
|
|
0
|
3718 Return t if (car A) is numerically less than (car B).
|
|
20
|
3719 */
|
|
|
3720 (a, b))
|
|
0
|
3721 {
|
|
|
3722 return Flss (Fcar (a), Fcar (b));
|
|
|
3723 }
|
|
|
3724
|
|
|
3725 /* Heh heh heh, let's define this too, just to aggravate the person who
|
|
|
3726 wrote the above comment. */
|
|
20
|
3727 DEFUN ("cdr-less-than-cdr", Fcdr_less_than_cdr, 2, 2, 0, /*
|
|
0
|
3728 Return t if (cdr A) is numerically less than (cdr B).
|
|
20
|
3729 */
|
|
|
3730 (a, b))
|
|
0
|
3731 {
|
|
|
3732 return Flss (Fcdr (a), Fcdr (b));
|
|
|
3733 }
|
|
|
3734
|
|
|
3735 /* Build the complete list of annotations appropriate for writing out
|
|
|
3736 the text between START and END, by calling all the functions in
|
|
|
3737 write-region-annotate-functions and merging the lists they return.
|
|
|
3738 If one of these functions switches to a different buffer, we assume
|
|
|
3739 that buffer contains altered text. Therefore, the caller must
|
|
|
3740 make sure to restore the current buffer in all cases,
|
|
|
3741 as save-excursion would do. */
|
|
|
3742
|
|
|
3743 static Lisp_Object
|
|
|
3744 build_annotations (Lisp_Object start, Lisp_Object end)
|
|
|
3745 {
|
|
|
3746 /* This function can GC */
|
|
|
3747 Lisp_Object annotations;
|
|
|
3748 Lisp_Object p, res;
|
|
|
3749 struct gcpro gcpro1, gcpro2;
|
|
|
3750
|
|
|
3751 annotations = Qnil;
|
|
|
3752 p = Vwrite_region_annotate_functions;
|
|
|
3753 GCPRO2 (annotations, p);
|
|
|
3754 while (!NILP (p))
|
|
|
3755 {
|
|
|
3756 struct buffer *given_buffer = current_buffer;
|
|
|
3757 Vwrite_region_annotations_so_far = annotations;
|
|
|
3758 res = call2 (Fcar (p), start, end);
|
|
|
3759 /* If the function makes a different buffer current,
|
|
|
3760 assume that means this buffer contains altered text to be output.
|
|
|
3761 Reset START and END from the buffer bounds
|
|
|
3762 and discard all previous annotations because they should have
|
|
|
3763 been dealt with by this function. */
|
|
|
3764 if (current_buffer != given_buffer)
|
|
|
3765 {
|
|
|
3766 start = make_int (BUF_BEGV (current_buffer));
|
|
|
3767 end = make_int (BUF_ZV (current_buffer));
|
|
|
3768 annotations = Qnil;
|
|
|
3769 }
|
|
|
3770 (void) Flength (res); /* Check basic validity of return value */
|
|
|
3771 annotations = merge (annotations, res, Qcar_less_than_car);
|
|
|
3772 p = Fcdr (p);
|
|
|
3773 }
|
|
|
3774
|
|
|
3775 /* Now do the same for annotation functions implied by the file-format */
|
|
|
3776 if (auto_saving && (!EQ (Vauto_save_file_format, Qt)))
|
|
|
3777 p = Vauto_save_file_format;
|
|
|
3778 else
|
|
|
3779 p = current_buffer->file_format;
|
|
|
3780 while (!NILP (p))
|
|
|
3781 {
|
|
|
3782 struct buffer *given_buffer = current_buffer;
|
|
|
3783 Vwrite_region_annotations_so_far = annotations;
|
|
|
3784 res = call3 (Qformat_annotate_function, Fcar (p), start, end);
|
|
|
3785 if (current_buffer != given_buffer)
|
|
|
3786 {
|
|
|
3787 start = make_int (BUF_BEGV (current_buffer));
|
|
|
3788 end = make_int (BUF_ZV (current_buffer));
|
|
|
3789 annotations = Qnil;
|
|
|
3790 }
|
|
|
3791 (void) Flength (res);
|
|
|
3792 annotations = merge (annotations, res, Qcar_less_than_car);
|
|
|
3793 p = Fcdr (p);
|
|
|
3794 }
|
|
|
3795 UNGCPRO;
|
|
|
3796 return annotations;
|
|
|
3797 }
|
|
|
3798
|
|
|
3799 /* Write to stream OUTSTREAM the characters from INSTREAM (it is read until
|
|
|
3800 EOF is encountered), assuming they start at position POS in the buffer
|
|
|
3801 of string that STREAM refers to. Intersperse with them the annotations
|
|
|
3802 from *ANNOT that fall into the range of positions we are reading from,
|
|
|
3803 each at its appropriate position.
|
|
|
3804
|
|
|
3805 Modify *ANNOT by discarding elements as we output them.
|
|
|
3806 The return value is negative in case of system call failure. */
|
|
|
3807
|
|
|
3808 /* 4K should probably be fine. We just need to reduce the number of
|
|
|
3809 function calls to reasonable level. The Lstream stuff itself will
|
|
|
3810 batch to 64K to reduce the number of system calls. */
|
|
|
3811
|
|
|
3812 #define A_WRITE_BATCH_SIZE 4096
|
|
|
3813
|
|
|
3814 static int
|
|
|
3815 a_write (Lisp_Object outstream, Lisp_Object instream, int pos,
|
|
|
3816 Lisp_Object *annot)
|
|
|
3817 {
|
|
|
3818 Lisp_Object tem;
|
|
|
3819 int nextpos;
|
|
|
3820 unsigned char largebuf[A_WRITE_BATCH_SIZE];
|
|
|
3821 Lstream *instr = XLSTREAM (instream);
|
|
|
3822 Lstream *outstr = XLSTREAM (outstream);
|
|
|
3823
|
|
|
3824 while (NILP (*annot) || CONSP (*annot))
|
|
|
3825 {
|
|
|
3826 tem = Fcar_safe (Fcar (*annot));
|
|
|
3827 if (INTP (tem))
|
|
|
3828 nextpos = XINT (tem);
|
|
|
3829 else
|
|
|
3830 nextpos = INT_MAX;
|
|
|
3831 {
|
|
|
3832 while (pos != nextpos)
|
|
|
3833 {
|
|
|
3834 /* Otherwise there is no point to that. Just go in batches. */
|
|
|
3835 int chunk = min (nextpos - pos, A_WRITE_BATCH_SIZE);
|
|
|
3836
|
|
|
3837 chunk = Lstream_read (instr, largebuf, chunk);
|
|
|
3838 if (chunk < 0)
|
|
|
3839 return -1;
|
|
|
3840 if (chunk == 0) /* EOF */
|
|
|
3841 break;
|
|
|
3842 if (Lstream_write (outstr, largebuf, chunk) < chunk)
|
|
|
3843 return -1;
|
|
|
3844 pos += chunk;
|
|
|
3845 }
|
|
|
3846 }
|
|
|
3847 if (pos == nextpos)
|
|
|
3848 {
|
|
|
3849 tem = Fcdr (Fcar (*annot));
|
|
|
3850 if (STRINGP (tem))
|
|
|
3851 {
|
|
16
|
3852 if (Lstream_write (outstr, XSTRING_DATA (tem),
|
|
|
3853 XSTRING_LENGTH (tem)) < 0)
|
|
0
|
3854 return -1;
|
|
|
3855 }
|
|
|
3856 *annot = Fcdr (*annot);
|
|
|
3857 }
|
|
|
3858 else
|
|
|
3859 return 0;
|
|
|
3860 }
|
|
|
3861 return -1;
|
|
|
3862 }
|
|
|
3863
|
|
|
3864
|
|
|
3865
|
|
|
3866 #if 0
|
|
|
3867 #include <des_crypt.h>
|
|
|
3868
|
|
|
3869 #define CRYPT_BLOCK_SIZE 8 /* bytes */
|
|
|
3870 #define CRYPT_KEY_SIZE 8 /* bytes */
|
|
|
3871
|
|
20
|
3872 DEFUN ("encrypt-string", Fencrypt_string, 2, 2, 0, /*
|
|
0
|
3873 Encrypt STRING using KEY.
|
|
20
|
3874 */
|
|
|
3875 (string, key))
|
|
0
|
3876 {
|
|
|
3877 char *encrypted_string, *raw_key;
|
|
|
3878 int rounded_size, extra, key_size;
|
|
|
3879
|
|
|
3880 /* !!#### May produce bogus data under Mule. */
|
|
|
3881 CHECK_STRING (string);
|
|
|
3882 CHECK_STRING (key);
|
|
|
3883
|
|
16
|
3884 extra = XSTRING_LENGTH (string) % CRYPT_BLOCK_SIZE;
|
|
|
3885 rounded_size = XSTRING_LENGTH (string) + extra;
|
|
0
|
3886 encrypted_string = alloca (rounded_size + 1);
|
|
16
|
3887 memcpy (encrypted_string, XSTRING_DATA (string), XSTRING_LENGTH (string));
|
|
0
|
3888 memset (encrypted_string + rounded_size - extra, 0, extra + 1);
|
|
|
3889
|
|
16
|
3890 if (XSTRING_LENGTH (key) > CRYPT_KEY_SIZE)
|
|
0
|
3891 key_size = CRYPT_KEY_SIZE;
|
|
|
3892 else
|
|
16
|
3893 key_size = XSTRING_LENGTH (key);
|
|
0
|
3894
|
|
|
3895 raw_key = alloca (CRYPT_KEY_SIZE + 1);
|
|
16
|
3896 memcpy (raw_key, XSTRING_DATA (key), key_size);
|
|
0
|
3897 memset (raw_key + key_size, 0, (CRYPT_KEY_SIZE + 1) - key_size);
|
|
|
3898
|
|
|
3899 (void) ecb_crypt (raw_key, encrypted_string, rounded_size,
|
|
|
3900 DES_ENCRYPT | DES_SW);
|
|
|
3901 return make_string (encrypted_string, rounded_size);
|
|
|
3902 }
|
|
|
3903
|
|
20
|
3904 DEFUN ("decrypt-string", Fdecrypt_string, 2, 2, 0, /*
|
|
0
|
3905 Decrypt STRING using KEY.
|
|
20
|
3906 */
|
|
|
3907 (string, key))
|
|
0
|
3908 {
|
|
|
3909 char *decrypted_string, *raw_key;
|
|
|
3910 int string_size, key_size;
|
|
|
3911
|
|
|
3912 CHECK_STRING (string);
|
|
|
3913 CHECK_STRING (key);
|
|
|
3914
|
|
16
|
3915 string_size = XSTRING_LENGTH (string) + 1;
|
|
0
|
3916 decrypted_string = alloca (string_size);
|
|
16
|
3917 memcpy (decrypted_string, XSTRING_DATA (string), string_size);
|
|
0
|
3918 decrypted_string[string_size - 1] = '\0';
|
|
|
3919
|
|
16
|
3920 if (XSTRING_LENGTH (key) > CRYPT_KEY_SIZE)
|
|
0
|
3921 key_size = CRYPT_KEY_SIZE;
|
|
|
3922 else
|
|
16
|
3923 key_size = XSTRING_LENGTH (key);
|
|
0
|
3924
|
|
|
3925 raw_key = alloca (CRYPT_KEY_SIZE + 1);
|
|
16
|
3926 memcpy (raw_key, XSTRING_DATA (key), key_size);
|
|
0
|
3927 memset (raw_key + key_size, 0, (CRYPT_KEY_SIZE + 1) - key_size);
|
|
|
3928
|
|
|
3929
|
|
|
3930 (void) ecb_crypt (raw_key, decrypted_string, string_size,
|
|
|
3931 DES_DECRYPT | DES_SW);
|
|
|
3932 return make_string (decrypted_string, string_size - 1);
|
|
|
3933 }
|
|
|
3934 #endif
|
|
|
3935
|
|
|
3936
|
|
20
|
3937 DEFUN ("verify-visited-file-modtime", Fverify_visited_file_modtime, 1, 1, 0, /*
|
|
0
|
3938 Return t if last mod time of BUF's visited file matches what BUF records.
|
|
|
3939 This means that the file has not been changed since it was visited or saved.
|
|
20
|
3940 */
|
|
|
3941 (buf))
|
|
0
|
3942 {
|
|
|
3943 /* This function can GC */
|
|
|
3944 struct buffer *b;
|
|
|
3945 struct stat st;
|
|
|
3946 Lisp_Object handler;
|
|
|
3947
|
|
|
3948 CHECK_BUFFER (buf);
|
|
|
3949 b = XBUFFER (buf);
|
|
|
3950
|
|
|
3951 if (!STRINGP (b->filename)) return Qt;
|
|
|
3952 if (b->modtime == 0) return Qt;
|
|
|
3953
|
|
|
3954 /* If the file name has special constructs in it,
|
|
|
3955 call the corresponding file handler. */
|
|
|
3956 handler = Ffind_file_name_handler (b->filename,
|
|
|
3957 Qverify_visited_file_modtime);
|
|
|
3958 if (!NILP (handler))
|
|
|
3959 return call2 (handler, Qverify_visited_file_modtime, buf);
|
|
|
3960
|
|
16
|
3961 if (stat ((char *) XSTRING_DATA (b->filename), &st) < 0)
|
|
0
|
3962 {
|
|
|
3963 /* If the file doesn't exist now and didn't exist before,
|
|
|
3964 we say that it isn't modified, provided the error is a tame one. */
|
|
|
3965 if (errno == ENOENT || errno == EACCES || errno == ENOTDIR)
|
|
|
3966 st.st_mtime = -1;
|
|
|
3967 else
|
|
|
3968 st.st_mtime = 0;
|
|
|
3969 }
|
|
|
3970 if (st.st_mtime == b->modtime
|
|
|
3971 /* If both are positive, accept them if they are off by one second. */
|
|
|
3972 || (st.st_mtime > 0 && b->modtime > 0
|
|
|
3973 && (st.st_mtime == b->modtime + 1
|
|
|
3974 || st.st_mtime == b->modtime - 1)))
|
|
|
3975 return Qt;
|
|
|
3976 return Qnil;
|
|
|
3977 }
|
|
|
3978
|
|
20
|
3979 DEFUN ("clear-visited-file-modtime", Fclear_visited_file_modtime, 0, 0, 0, /*
|
|
0
|
3980 Clear out records of last mod time of visited file.
|
|
|
3981 Next attempt to save will certainly not complain of a discrepancy.
|
|
20
|
3982 */
|
|
|
3983 ())
|
|
0
|
3984 {
|
|
|
3985 current_buffer->modtime = 0;
|
|
|
3986 return Qnil;
|
|
|
3987 }
|
|
|
3988
|
|
20
|
3989 DEFUN ("visited-file-modtime", Fvisited_file_modtime, 0, 0, 0, /*
|
|
0
|
3990 Return the current buffer's recorded visited file modification time.
|
|
|
3991 The value is a list of the form (HIGH . LOW), like the time values
|
|
|
3992 that `file-attributes' returns.
|
|
20
|
3993 */
|
|
|
3994 ())
|
|
0
|
3995 {
|
|
|
3996 return time_to_lisp ((time_t) current_buffer->modtime);
|
|
|
3997 }
|
|
|
3998
|
|
20
|
3999 DEFUN ("set-visited-file-modtime", Fset_visited_file_modtime, 0, 1, 0, /*
|
|
0
|
4000 Update buffer's recorded modification time from the visited file's time.
|
|
|
4001 Useful if the buffer was not read from the file normally
|
|
|
4002 or if the file itself has been changed for some known benign reason.
|
|
|
4003 An argument specifies the modification time value to use
|
|
|
4004 (instead of that of the visited file), in the form of a list
|
|
|
4005 (HIGH . LOW) or (HIGH LOW).
|
|
20
|
4006 */
|
|
|
4007 (time_list))
|
|
0
|
4008 {
|
|
|
4009 /* This function can GC */
|
|
|
4010 if (!NILP (time_list))
|
|
|
4011 {
|
|
|
4012 time_t the_time;
|
|
|
4013 lisp_to_time (time_list, &the_time);
|
|
|
4014 current_buffer->modtime = (int) the_time;
|
|
|
4015 }
|
|
|
4016 else
|
|
|
4017 {
|
|
|
4018 Lisp_Object filename;
|
|
|
4019 struct stat st;
|
|
|
4020 Lisp_Object handler;
|
|
|
4021 struct gcpro gcpro1, gcpro2;
|
|
|
4022
|
|
|
4023 GCPRO2 (filename, time_list);
|
|
|
4024 filename = Fexpand_file_name (current_buffer->filename,
|
|
|
4025 Qnil);
|
|
|
4026
|
|
|
4027 /* If the file name has special constructs in it,
|
|
|
4028 call the corresponding file handler. */
|
|
|
4029 handler = Ffind_file_name_handler (filename, Qset_visited_file_modtime);
|
|
|
4030 UNGCPRO;
|
|
|
4031 if (!NILP (handler))
|
|
|
4032 /* The handler can find the file name the same way we did. */
|
|
|
4033 return call2 (handler, Qset_visited_file_modtime, Qnil);
|
|
16
|
4034 else if (stat ((char *) XSTRING_DATA (filename), &st) >= 0)
|
|
0
|
4035 current_buffer->modtime = st.st_mtime;
|
|
|
4036 }
|
|
|
4037
|
|
|
4038 return Qnil;
|
|
|
4039 }
|
|
|
4040
|
|
20
|
4041 DEFUN ("set-buffer-modtime", Fset_buffer_modtime, 1, 2, 0, /*
|
|
0
|
4042 Update BUFFER's recorded modification time from the associated
|
|
|
4043 file's modtime, if there is an associated file. If not, use the
|
|
|
4044 current time. In either case, if the optional arg TIME is supplied,
|
|
|
4045 it will be used if it is either an integer or a cons of two integers.
|
|
20
|
4046 */
|
|
|
4047 (buf, in_time))
|
|
0
|
4048 {
|
|
|
4049 /* This function can GC */
|
|
|
4050 unsigned long time_to_use = 0;
|
|
|
4051 int set_time_to_use = 0;
|
|
|
4052 struct stat st;
|
|
|
4053
|
|
|
4054 CHECK_BUFFER (buf);
|
|
|
4055
|
|
|
4056 if (!NILP (in_time))
|
|
|
4057 {
|
|
|
4058 if (INTP (in_time))
|
|
|
4059 {
|
|
|
4060 time_to_use = XINT (in_time);
|
|
|
4061 set_time_to_use = 1;
|
|
|
4062 }
|
|
|
4063 else if ((CONSP (in_time)) &&
|
|
|
4064 (INTP (Fcar (in_time))) &&
|
|
|
4065 (INTP (Fcdr (in_time))))
|
|
|
4066 {
|
|
|
4067 time_t the_time;
|
|
|
4068 lisp_to_time (in_time, &the_time);
|
|
|
4069 time_to_use = (unsigned long) the_time;
|
|
|
4070 set_time_to_use = 1;
|
|
|
4071 }
|
|
|
4072 }
|
|
|
4073
|
|
|
4074 if (!set_time_to_use)
|
|
|
4075 {
|
|
|
4076 Lisp_Object filename = Qnil;
|
|
|
4077 struct gcpro gcpro1, gcpro2;
|
|
|
4078 GCPRO2 (buf, filename);
|
|
|
4079
|
|
|
4080 if (STRINGP (XBUFFER (buf)->filename))
|
|
|
4081 filename = Fexpand_file_name (XBUFFER (buf)->filename,
|
|
|
4082 Qnil);
|
|
|
4083 else
|
|
|
4084 filename = Qnil;
|
|
|
4085
|
|
|
4086 UNGCPRO;
|
|
|
4087
|
|
|
4088 if (!NILP (filename) && !NILP (Ffile_exists_p (filename)))
|
|
|
4089 {
|
|
|
4090 Lisp_Object handler;
|
|
|
4091
|
|
|
4092 /* If the file name has special constructs in it,
|
|
|
4093 call the corresponding file handler. */
|
|
|
4094 GCPRO1 (filename);
|
|
|
4095 handler = Ffind_file_name_handler (filename, Qset_buffer_modtime);
|
|
|
4096 UNGCPRO;
|
|
|
4097 if (!NILP (handler))
|
|
|
4098 /* The handler can find the file name the same way we did. */
|
|
|
4099 return (call2 (handler, Qset_buffer_modtime, Qnil));
|
|
|
4100 else
|
|
|
4101 {
|
|
16
|
4102 if (stat ((char *) XSTRING_DATA (filename), &st) >= 0)
|
|
0
|
4103 time_to_use = st.st_mtime;
|
|
|
4104 else
|
|
|
4105 time_to_use = time ((time_t *) 0);
|
|
|
4106 }
|
|
|
4107 }
|
|
|
4108 else
|
|
|
4109 time_to_use = time ((time_t *) 0);
|
|
|
4110 }
|
|
|
4111
|
|
|
4112 XBUFFER (buf)->modtime = time_to_use;
|
|
|
4113
|
|
|
4114 return Qnil;
|
|
|
4115 }
|
|
|
4116
|
|
|
4117
|
|
|
4118 static Lisp_Object
|
|
|
4119 auto_save_error (Lisp_Object condition_object, Lisp_Object ignored)
|
|
|
4120 {
|
|
|
4121 /* This function can GC */
|
|
|
4122 if (gc_in_progress)
|
|
|
4123 return Qnil;
|
|
|
4124 clear_echo_area (selected_frame (), Qauto_saving, 1);
|
|
|
4125 Fding (Qt, Qauto_save_error, Qnil);
|
|
16
|
4126 message ("Auto-saving...error for %s", XSTRING_DATA (current_buffer->name));
|
|
0
|
4127 Fsleep_for (make_int (1));
|
|
16
|
4128 message ("Auto-saving...error!for %s", XSTRING_DATA (current_buffer->name));
|
|
0
|
4129 Fsleep_for (make_int (1));
|
|
16
|
4130 message ("Auto-saving...error for %s", XSTRING_DATA (current_buffer->name));
|
|
0
|
4131 Fsleep_for (make_int (1));
|
|
|
4132 return Qnil;
|
|
|
4133 }
|
|
|
4134
|
|
|
4135 static Lisp_Object
|
|
|
4136 auto_save_1 (Lisp_Object ignored)
|
|
|
4137 {
|
|
|
4138 /* This function can GC */
|
|
|
4139 struct stat st;
|
|
|
4140 Lisp_Object fn = current_buffer->filename;
|
|
|
4141 Lisp_Object a = current_buffer->auto_save_file_name;
|
|
|
4142
|
|
|
4143 if (!STRINGP (a))
|
|
|
4144 return (Qnil);
|
|
|
4145
|
|
|
4146 /* Get visited file's mode to become the auto save file's mode. */
|
|
|
4147 if (STRINGP (fn) &&
|
|
16
|
4148 stat ((char *) XSTRING_DATA (fn), &st) >= 0)
|
|
0
|
4149 /* But make sure we can overwrite it later! */
|
|
|
4150 auto_save_mode_bits = st.st_mode | 0600;
|
|
|
4151 else
|
|
|
4152 /* default mode for auto-save files of buffers with no file is
|
|
|
4153 readable by owner only. This may annoy some small number of
|
|
|
4154 people, but the alternative removes all privacy from email. */
|
|
|
4155 auto_save_mode_bits = 0600;
|
|
|
4156
|
|
|
4157 return
|
|
|
4158 Fwrite_region_internal (Qnil, Qnil, a, Qnil, Qlambda, Qnil);
|
|
|
4159 }
|
|
|
4160
|
|
|
4161
|
|
|
4162 static Lisp_Object
|
|
|
4163 do_auto_save_unwind (Lisp_Object fd)
|
|
|
4164 {
|
|
|
4165 close (XINT (fd));
|
|
|
4166 return (fd);
|
|
|
4167 }
|
|
|
4168
|
|
|
4169 static Lisp_Object
|
|
|
4170 do_auto_save_unwind_2 (Lisp_Object old_auto_saving)
|
|
|
4171 {
|
|
|
4172 auto_saving = XINT (old_auto_saving);
|
|
|
4173 return Qnil;
|
|
|
4174 }
|
|
|
4175
|
|
|
4176 /* Fdo_auto_save() checks whether a GC is in progress when it is called,
|
|
|
4177 and if so, tries to avoid touching lisp objects.
|
|
|
4178
|
|
|
4179 The only time that Fdo_auto_save() is called while GC is in progress
|
|
|
4180 is if we're going down, as a result of an abort() or a kill signal.
|
|
|
4181 It's fairly important that we generate autosave files in that case!
|
|
|
4182 */
|
|
|
4183
|
|
20
|
4184 DEFUN ("do-auto-save", Fdo_auto_save, 0, 2, "", /*
|
|
0
|
4185 Auto-save all buffers that need it.
|
|
|
4186 This is all buffers that have auto-saving enabled
|
|
|
4187 and are changed since last auto-saved.
|
|
|
4188 Auto-saving writes the buffer into a file
|
|
|
4189 so that your editing is not lost if the system crashes.
|
|
|
4190 This file is not the file you visited; that changes only when you save.
|
|
|
4191 Normally we run the normal hook `auto-save-hook' before saving.
|
|
|
4192
|
|
|
4193 Non-nil first argument means do not print any message if successful.
|
|
|
4194 Non-nil second argument means save only current buffer.
|
|
20
|
4195 */
|
|
|
4196 (no_message, current_only))
|
|
0
|
4197 {
|
|
|
4198 /* This function can GC */
|
|
|
4199 struct buffer *old = current_buffer, *b;
|
|
|
4200 Lisp_Object tail, buf;
|
|
|
4201 int auto_saved = 0;
|
|
|
4202 int do_handled_files;
|
|
|
4203 Lisp_Object oquit = Qnil;
|
|
|
4204 Lisp_Object listfile = Qnil;
|
|
|
4205 int listdesc = -1;
|
|
|
4206 int speccount = specpdl_depth ();
|
|
|
4207 struct gcpro gcpro1, gcpro2;
|
|
|
4208
|
|
|
4209 GCPRO2 (oquit, listfile);
|
|
|
4210 check_quit (); /* make Vquit_flag accurate */
|
|
|
4211 /* Ordinarily don't quit within this function,
|
|
|
4212 but don't make it impossible to quit (in case we get hung in I/O). */
|
|
|
4213 oquit = Vquit_flag;
|
|
|
4214 Vquit_flag = Qnil;
|
|
|
4215
|
|
|
4216 /* No further GCPRO needed, because (when it matters) all Lisp_Object
|
|
|
4217 variables point to non-strings reached from Vbuffer_alist. */
|
|
|
4218
|
|
|
4219 if (minibuf_level != 0 || preparing_for_armageddon)
|
|
|
4220 no_message = Qt;
|
|
|
4221
|
|
|
4222 run_hook (Qauto_save_hook);
|
|
|
4223
|
|
|
4224 if (GC_STRINGP (Vauto_save_list_file_name))
|
|
|
4225 listfile = Fexpand_file_name (Vauto_save_list_file_name, Qnil);
|
|
|
4226
|
|
|
4227 /* Make sure auto_saving is reset. */
|
|
|
4228 record_unwind_protect (do_auto_save_unwind_2, make_int (auto_saving));
|
|
|
4229
|
|
|
4230 auto_saving = 1;
|
|
|
4231
|
|
|
4232 /* First, save all files which don't have handlers. If Emacs is
|
|
|
4233 crashing, the handlers may tweak what is causing Emacs to crash
|
|
|
4234 in the first place, and it would be a shame if Emacs failed to
|
|
|
4235 autosave perfectly ordinary files because it couldn't handle some
|
|
|
4236 ange-ftp'd file. */
|
|
|
4237 for (do_handled_files = 0; do_handled_files < 2; do_handled_files++)
|
|
|
4238 {
|
|
|
4239 for (tail = Vbuffer_alist;
|
|
|
4240 GC_CONSP (tail);
|
|
|
4241 tail = XCDR (tail))
|
|
|
4242 {
|
|
|
4243 buf = XCDR (XCAR (tail));
|
|
|
4244 b = XBUFFER (buf);
|
|
|
4245
|
|
|
4246 if (!GC_NILP (current_only)
|
|
|
4247 && b != current_buffer)
|
|
|
4248 continue;
|
|
|
4249
|
|
|
4250 /* Don't auto-save indirect buffers.
|
|
|
4251 The base buffer takes care of it. */
|
|
|
4252 if (b->base_buffer)
|
|
|
4253 continue;
|
|
|
4254
|
|
|
4255 /* Check for auto save enabled
|
|
|
4256 and file changed since last auto save
|
|
|
4257 and file changed since last real save. */
|
|
|
4258 if (GC_STRINGP (b->auto_save_file_name)
|
|
|
4259 && BUF_SAVE_MODIFF (b) < BUF_MODIFF (b)
|
|
|
4260 && b->auto_save_modified < BUF_MODIFF (b)
|
|
|
4261 /* -1 means we've turned off autosaving for a while--see below. */
|
|
|
4262 && XINT (b->save_length) >= 0
|
|
|
4263 && (do_handled_files
|
|
|
4264 || NILP (Ffind_file_name_handler (b->auto_save_file_name,
|
|
|
4265 Qwrite_region))))
|
|
|
4266 {
|
|
|
4267 EMACS_TIME before_time, after_time;
|
|
|
4268
|
|
|
4269 EMACS_GET_TIME (before_time);
|
|
|
4270 /* If we had a failure, don't try again for 20 minutes. */
|
|
|
4271 if (!preparing_for_armageddon
|
|
|
4272 && b->auto_save_failure_time >= 0
|
|
|
4273 && (EMACS_SECS (before_time) - b->auto_save_failure_time <
|
|
|
4274 1200))
|
|
|
4275 continue;
|
|
|
4276
|
|
|
4277 if (!preparing_for_armageddon &&
|
|
|
4278 (XINT (b->save_length) * 10
|
|
|
4279 > (BUF_Z (b) - BUF_BEG (b)) * 13)
|
|
|
4280 /* A short file is likely to change a large fraction;
|
|
|
4281 spare the user annoying messages. */
|
|
|
4282 && XINT (b->save_length) > 5000
|
|
|
4283 /* These messages are frequent and annoying for `*mail*'. */
|
|
|
4284 && !EQ (b->filename, Qnil)
|
|
|
4285 && NILP (no_message)
|
|
|
4286 && disable_auto_save_when_buffer_shrinks)
|
|
|
4287 {
|
|
|
4288 /* It has shrunk too much; turn off auto-saving here.
|
|
|
4289 Unless we're about to crash, in which case auto-save it
|
|
|
4290 anyway.
|
|
|
4291 */
|
|
|
4292 message
|
|
|
4293 ("Buffer %s has shrunk a lot; auto save turned off there",
|
|
16
|
4294 XSTRING_DATA (b->name));
|
|
0
|
4295 /* Turn off auto-saving until there's a real save,
|
|
|
4296 and prevent any more warnings. */
|
|
|
4297 b->save_length = make_int (-1);
|
|
|
4298 if (!gc_in_progress)
|
|
|
4299 Fsleep_for (make_int (1));
|
|
|
4300 continue;
|
|
|
4301 }
|
|
|
4302 set_buffer_internal (b);
|
|
|
4303 if (!auto_saved && GC_NILP (no_message))
|
|
|
4304 {
|
|
|
4305 static CONST unsigned char *msg
|
|
|
4306 = (CONST unsigned char *) "Auto-saving...";
|
|
|
4307 echo_area_message (selected_frame (), msg, Qnil,
|
|
|
4308 0, strlen ((CONST char *) msg),
|
|
|
4309 Qauto_saving);
|
|
|
4310 }
|
|
|
4311
|
|
|
4312 /* Open the auto-save list file, if necessary.
|
|
|
4313 We only do this now so that the file only exists
|
|
|
4314 if we actually auto-saved any files. */
|
|
|
4315 if (!auto_saved && GC_STRINGP (listfile) && listdesc < 0)
|
|
|
4316 {
|
|
|
4317 #ifdef DOS_NT
|
|
16
|
4318 listdesc = open ((char *) XSTRING_DATA (listfile),
|
|
0
|
4319 O_WRONLY | O_TRUNC | O_CREAT | O_TEXT,
|
|
|
4320 S_IREAD | S_IWRITE);
|
|
|
4321 #else /* not DOS_NT */
|
|
16
|
4322 listdesc = creat ((char *) XSTRING_DATA (listfile), 0666);
|
|
0
|
4323 #endif /* not DOS_NT */
|
|
|
4324
|
|
|
4325 /* Arrange to close that file whether or not we get
|
|
|
4326 an error. */
|
|
|
4327 if (listdesc >= 0)
|
|
|
4328 record_unwind_protect (do_auto_save_unwind,
|
|
|
4329 make_int (listdesc));
|
|
|
4330 }
|
|
|
4331
|
|
|
4332 /* Record all the buffers that we are auto-saving in
|
|
|
4333 the special file that lists them. For each of
|
|
|
4334 these buffers, record visited name (if any) and
|
|
|
4335 auto save name. */
|
|
|
4336 if (listdesc >= 0)
|
|
|
4337 {
|
|
|
4338 Extbyte *auto_save_file_name_ext;
|
|
|
4339 Extcount auto_save_file_name_ext_len;
|
|
|
4340
|
|
|
4341 GET_STRING_FILENAME_DATA_ALLOCA
|
|
|
4342 (b->auto_save_file_name,
|
|
|
4343 auto_save_file_name_ext,
|
|
|
4344 auto_save_file_name_ext_len);
|
|
|
4345 if (!NILP (b->filename))
|
|
|
4346 {
|
|
|
4347 Extbyte *filename_ext;
|
|
|
4348 Extcount filename_ext_len;
|
|
|
4349
|
|
|
4350 GET_STRING_FILENAME_DATA_ALLOCA (b->filename,
|
|
|
4351 filename_ext,
|
|
|
4352 filename_ext_len);
|
|
|
4353 write (listdesc, filename_ext, filename_ext_len);
|
|
|
4354 }
|
|
|
4355 write (listdesc, "\n", 1);
|
|
|
4356 write (listdesc, auto_save_file_name_ext,
|
|
|
4357 auto_save_file_name_ext_len);
|
|
|
4358 write (listdesc, "\n", 1);
|
|
|
4359 }
|
|
|
4360
|
|
|
4361 condition_case_1 (Qt,
|
|
|
4362 auto_save_1, Qnil,
|
|
|
4363 auto_save_error, Qnil);
|
|
|
4364 auto_saved++;
|
|
|
4365 b->auto_save_modified = BUF_MODIFF (b);
|
|
|
4366 b->save_length = make_int (BUF_SIZE (b));
|
|
|
4367 set_buffer_internal (old);
|
|
|
4368
|
|
|
4369 EMACS_GET_TIME (after_time);
|
|
|
4370 /* If auto-save took more than 60 seconds,
|
|
|
4371 assume it was an NFS failure that got a timeout. */
|
|
|
4372 if (EMACS_SECS (after_time) - EMACS_SECS (before_time) > 60)
|
|
|
4373 b->auto_save_failure_time = EMACS_SECS (after_time);
|
|
|
4374 }
|
|
|
4375 }
|
|
|
4376 }
|
|
|
4377
|
|
|
4378 /* Prevent another auto save till enough input events come in. */
|
|
|
4379 if (auto_saved)
|
|
|
4380 record_auto_save ();
|
|
|
4381
|
|
|
4382 /* If we didn't save anything into the listfile, remove the old
|
|
|
4383 one because nothing needed to be auto-saved. Do this afterwards
|
|
|
4384 rather than before in case we get a crash attempting to autosave
|
|
|
4385 (in that case we'd still want the old one around). */
|
|
|
4386 if (listdesc < 0 && !auto_saved && GC_STRINGP (listfile))
|
|
16
|
4387 unlink ((char *) XSTRING_DATA (listfile));
|
|
0
|
4388
|
|
|
4389 /* Show "...done" only if the echo area would otherwise be empty. */
|
|
|
4390 if (auto_saved && NILP (no_message)
|
|
|
4391 && NILP (clear_echo_area (selected_frame (), Qauto_saving, 0)))
|
|
|
4392 {
|
|
|
4393 static CONST unsigned char *msg
|
|
|
4394 = (CONST unsigned char *)"Auto-saving...done";
|
|
|
4395 echo_area_message (selected_frame (), msg, Qnil, 0,
|
|
|
4396 strlen ((CONST char *) msg), Qauto_saving);
|
|
|
4397 }
|
|
|
4398
|
|
|
4399 Vquit_flag = oquit;
|
|
|
4400
|
|
|
4401 RETURN_UNGCPRO (unbind_to (speccount, Qnil));
|
|
|
4402 }
|
|
|
4403
|
|
20
|
4404 DEFUN ("set-buffer-auto-saved", Fset_buffer_auto_saved, 0, 0, 0, /*
|
|
0
|
4405 Mark current buffer as auto-saved with its current text.
|
|
|
4406 No auto-save file will be written until the buffer changes again.
|
|
20
|
4407 */
|
|
|
4408 ())
|
|
0
|
4409 {
|
|
|
4410 current_buffer->auto_save_modified = BUF_MODIFF (current_buffer);
|
|
|
4411 current_buffer->save_length = make_int (BUF_SIZE (current_buffer));
|
|
|
4412 current_buffer->auto_save_failure_time = -1;
|
|
|
4413 return Qnil;
|
|
|
4414 }
|
|
|
4415
|
|
20
|
4416 DEFUN ("clear-buffer-auto-save-failure", Fclear_buffer_auto_save_failure, 0, 0, 0, /*
|
|
0
|
4417 Clear any record of a recent auto-save failure in the current buffer.
|
|
20
|
4418 */
|
|
|
4419 ())
|
|
0
|
4420 {
|
|
|
4421 current_buffer->auto_save_failure_time = -1;
|
|
|
4422 return Qnil;
|
|
|
4423 }
|
|
|
4424
|
|
20
|
4425 DEFUN ("recent-auto-save-p", Frecent_auto_save_p, 0, 0, 0, /*
|
|
0
|
4426 Return t if buffer has been auto-saved since last read in or saved.
|
|
20
|
4427 */
|
|
|
4428 ())
|
|
0
|
4429 {
|
|
|
4430 return (BUF_SAVE_MODIFF (current_buffer) <
|
|
|
4431 current_buffer->auto_save_modified) ? Qt : Qnil;
|
|
|
4432 }
|
|
|
4433
|
|
|
4434
|
|
|
4435 /************************************************************************/
|
|
|
4436 /* initialization */
|
|
|
4437 /************************************************************************/
|
|
|
4438
|
|
|
4439 void
|
|
|
4440 syms_of_fileio (void)
|
|
|
4441 {
|
|
|
4442 defsymbol (&Qexpand_file_name, "expand-file-name");
|
|
|
4443 defsymbol (&Qfile_truename, "file-truename");
|
|
|
4444 defsymbol (&Qsubstitute_in_file_name, "substitute-in-file-name");
|
|
|
4445 defsymbol (&Qdirectory_file_name, "directory-file-name");
|
|
|
4446 defsymbol (&Qfile_name_directory, "file-name-directory");
|
|
|
4447 defsymbol (&Qfile_name_nondirectory, "file-name-nondirectory");
|
|
|
4448 defsymbol (&Qunhandled_file_name_directory, "unhandled-file-name-directory");
|
|
|
4449 defsymbol (&Qfile_name_as_directory, "file-name-as-directory");
|
|
|
4450 defsymbol (&Qcopy_file, "copy-file");
|
|
|
4451 defsymbol (&Qmake_directory_internal, "make-directory-internal");
|
|
|
4452 defsymbol (&Qdelete_directory, "delete-directory");
|
|
|
4453 defsymbol (&Qdelete_file, "delete-file");
|
|
|
4454 defsymbol (&Qrename_file, "rename-file");
|
|
|
4455 defsymbol (&Qadd_name_to_file, "add-name-to-file");
|
|
|
4456 defsymbol (&Qmake_symbolic_link, "make-symbolic-link");
|
|
|
4457 defsymbol (&Qfile_exists_p, "file-exists-p");
|
|
|
4458 defsymbol (&Qfile_executable_p, "file-executable-p");
|
|
|
4459 defsymbol (&Qfile_readable_p, "file-readable-p");
|
|
|
4460 defsymbol (&Qfile_symlink_p, "file-symlink-p");
|
|
|
4461 defsymbol (&Qfile_writable_p, "file-writable-p");
|
|
|
4462 defsymbol (&Qfile_directory_p, "file-directory-p");
|
|
|
4463 defsymbol (&Qfile_regular_p, "file-regular-p");
|
|
|
4464 defsymbol (&Qfile_accessible_directory_p, "file-accessible-directory-p");
|
|
|
4465 defsymbol (&Qfile_modes, "file-modes");
|
|
|
4466 defsymbol (&Qset_file_modes, "set-file-modes");
|
|
|
4467 defsymbol (&Qfile_newer_than_file_p, "file-newer-than-file-p");
|
|
|
4468 defsymbol (&Qinsert_file_contents, "insert-file-contents");
|
|
|
4469 defsymbol (&Qwrite_region, "write-region");
|
|
|
4470 defsymbol (&Qverify_visited_file_modtime, "verify-visited-file-modtime");
|
|
|
4471 defsymbol (&Qset_visited_file_modtime, "set-visited-file-modtime");
|
|
|
4472 defsymbol (&Qset_buffer_modtime, "set-buffer-modtime");
|
|
|
4473 #ifdef DOS_NT
|
|
|
4474 defsymbol (&Qfind_buffer_file_type, "find-buffer-file-type");
|
|
|
4475 #endif /* DOS_NT */
|
|
|
4476 defsymbol (&Qcar_less_than_car, "car-less-than-car"); /* Vomitous! */
|
|
|
4477
|
|
|
4478 defsymbol (&Qfile_name_handler_alist, "file-name-handler-alist");
|
|
|
4479 defsymbol (&Qauto_save_hook, "auto-save-hook");
|
|
|
4480 defsymbol (&Qauto_save_error, "auto-save-error");
|
|
|
4481 defsymbol (&Qauto_saving, "auto-saving");
|
|
|
4482
|
|
|
4483 defsymbol (&Qformat_decode, "format-decode");
|
|
|
4484 defsymbol (&Qformat_annotate_function, "format-annotate-function");
|
|
|
4485
|
|
|
4486 defsymbol (&Qcompute_buffer_file_truename, "compute-buffer-file-truename");
|
|
|
4487 deferror (&Qfile_error, "file-error", "File error", Qio_error);
|
|
|
4488 deferror (&Qfile_already_exists, "file-already-exists",
|
|
|
4489 "File already exists", Qfile_error);
|
|
|
4490
|
|
20
|
4491 DEFSUBR (Ffind_file_name_handler);
|
|
|
4492
|
|
|
4493 DEFSUBR (Ffile_name_directory);
|
|
|
4494 DEFSUBR (Ffile_name_nondirectory);
|
|
|
4495 DEFSUBR (Funhandled_file_name_directory);
|
|
|
4496 DEFSUBR (Ffile_name_as_directory);
|
|
|
4497 DEFSUBR (Fdirectory_file_name);
|
|
|
4498 DEFSUBR (Fmake_temp_name);
|
|
|
4499 DEFSUBR (Fexpand_file_name);
|
|
|
4500 DEFSUBR (Ffile_truename);
|
|
|
4501 DEFSUBR (Fsubstitute_in_file_name);
|
|
|
4502 DEFSUBR (Fcopy_file);
|
|
|
4503 DEFSUBR (Fmake_directory_internal);
|
|
|
4504 DEFSUBR (Fdelete_directory);
|
|
|
4505 DEFSUBR (Fdelete_file);
|
|
|
4506 DEFSUBR (Frename_file);
|
|
|
4507 DEFSUBR (Fadd_name_to_file);
|
|
0
|
4508 #ifdef S_IFLNK
|
|
20
|
4509 DEFSUBR (Fmake_symbolic_link);
|
|
0
|
4510 #endif /* S_IFLNK */
|
|
|
4511 #ifdef VMS
|
|
20
|
4512 DEFSUBR (Fdefine_logical_name);
|
|
0
|
4513 #endif /* VMS */
|
|
|
4514 #ifdef HPUX_NET
|
|
20
|
4515 DEFSUBR (Fsysnetunam);
|
|
0
|
4516 #endif /* HPUX_NET */
|
|
20
|
4517 DEFSUBR (Ffile_name_absolute_p);
|
|
|
4518 DEFSUBR (Ffile_exists_p);
|
|
|
4519 DEFSUBR (Ffile_executable_p);
|
|
|
4520 DEFSUBR (Ffile_readable_p);
|
|
|
4521 DEFSUBR (Ffile_writable_p);
|
|
|
4522 DEFSUBR (Ffile_symlink_p);
|
|
|
4523 DEFSUBR (Ffile_directory_p);
|
|
|
4524 DEFSUBR (Ffile_accessible_directory_p);
|
|
|
4525 DEFSUBR (Ffile_regular_p);
|
|
|
4526 DEFSUBR (Ffile_modes);
|
|
|
4527 DEFSUBR (Fset_file_modes);
|
|
|
4528 DEFSUBR (Fset_default_file_modes);
|
|
|
4529 DEFSUBR (Fdefault_file_modes);
|
|
|
4530 DEFSUBR (Funix_sync);
|
|
|
4531 DEFSUBR (Ffile_newer_than_file_p);
|
|
|
4532 DEFSUBR (Finsert_file_contents_internal);
|
|
|
4533 DEFSUBR (Fwrite_region_internal);
|
|
|
4534 DEFSUBR (Fcar_less_than_car); /* Vomitous! */
|
|
|
4535 DEFSUBR (Fcdr_less_than_cdr); /* Yeah oh yeah bucko .... */
|
|
0
|
4536 #if 0
|
|
20
|
4537 DEFSUBR (Fencrypt_string);
|
|
|
4538 DEFSUBR (Fdecrypt_string);
|
|
0
|
4539 #endif
|
|
20
|
4540 DEFSUBR (Fverify_visited_file_modtime);
|
|
|
4541 DEFSUBR (Fclear_visited_file_modtime);
|
|
|
4542 DEFSUBR (Fvisited_file_modtime);
|
|
|
4543 DEFSUBR (Fset_visited_file_modtime);
|
|
|
4544 DEFSUBR (Fset_buffer_modtime);
|
|
|
4545
|
|
|
4546 DEFSUBR (Fdo_auto_save);
|
|
|
4547 DEFSUBR (Fset_buffer_auto_saved);
|
|
|
4548 DEFSUBR (Fclear_buffer_auto_save_failure);
|
|
|
4549 DEFSUBR (Frecent_auto_save_p);
|
|
0
|
4550 }
|
|
|
4551
|
|
|
4552 void
|
|
|
4553 vars_of_fileio (void)
|
|
|
4554 {
|
|
|
4555 DEFVAR_LISP ("auto-save-file-format", &Vauto_save_file_format /*
|
|
|
4556 *Format in which to write auto-save files.
|
|
|
4557 Should be a list of symbols naming formats that are defined in `format-alist'.
|
|
|
4558 If it is t, which is the default, auto-save files are written in the
|
|
|
4559 same format as a regular save would use.
|
|
|
4560 */ );
|
|
|
4561 Vauto_save_file_format = Qt;
|
|
|
4562
|
|
|
4563 DEFVAR_BOOL ("vms-stmlf-recfm", &vms_stmlf_recfm /*
|
|
|
4564 *Non-nil means write new files with record format `stmlf'.
|
|
|
4565 nil means use format `var'. This variable is meaningful only on VMS.
|
|
|
4566 */ );
|
|
|
4567 vms_stmlf_recfm = 0;
|
|
|
4568
|
|
|
4569 DEFVAR_LISP ("file-name-handler-alist", &Vfile_name_handler_alist /*
|
|
|
4570 *Alist of elements (REGEXP . HANDLER) for file names handled specially.
|
|
|
4571 If a file name matches REGEXP, then all I/O on that file is done by calling
|
|
|
4572 HANDLER.
|
|
|
4573
|
|
|
4574 The first argument given to HANDLER is the name of the I/O primitive
|
|
|
4575 to be handled; the remaining arguments are the arguments that were
|
|
|
4576 passed to that primitive. For example, if you do
|
|
|
4577 (file-exists-p FILENAME)
|
|
|
4578 and FILENAME is handled by HANDLER, then HANDLER is called like this:
|
|
|
4579 (funcall HANDLER 'file-exists-p FILENAME)
|
|
|
4580 The function `find-file-name-handler' checks this list for a handler
|
|
|
4581 for its argument.
|
|
|
4582 */ );
|
|
|
4583 Vfile_name_handler_alist = Qnil;
|
|
|
4584
|
|
|
4585 DEFVAR_LISP ("after-insert-file-functions", &Vafter_insert_file_functions /*
|
|
|
4586 A list of functions to be called at the end of `insert-file-contents'.
|
|
|
4587 Each is passed one argument, the number of bytes inserted. It should return
|
|
|
4588 the new byte count, and leave point the same. If `insert-file-contents' is
|
|
|
4589 intercepted by a handler from `file-name-handler-alist', that handler is
|
|
|
4590 responsible for calling the after-insert-file-functions if appropriate.
|
|
|
4591 */ );
|
|
|
4592 Vafter_insert_file_functions = Qnil;
|
|
|
4593
|
|
|
4594 DEFVAR_LISP ("write-region-annotate-functions",
|
|
|
4595 &Vwrite_region_annotate_functions /*
|
|
|
4596 A list of functions to be called at the start of `write-region'.
|
|
|
4597 Each is passed two arguments, START and END as for `write-region'.
|
|
|
4598 It should return a list of pairs (POSITION . STRING) of strings to be
|
|
|
4599 effectively inserted at the specified positions of the file being written
|
|
|
4600 \(1 means to insert before the first byte written). The POSITIONs must be
|
|
|
4601 sorted into increasing order. If there are several functions in the list,
|
|
|
4602 the several lists are merged destructively.
|
|
|
4603 */ );
|
|
|
4604 Vwrite_region_annotate_functions = Qnil;
|
|
|
4605
|
|
|
4606 DEFVAR_LISP ("write-region-annotations-so-far",
|
|
|
4607 &Vwrite_region_annotations_so_far /*
|
|
|
4608 When an annotation function is called, this holds the previous annotations.
|
|
|
4609 These are the annotations made by other annotation functions
|
|
|
4610 that were already called. See also `write-region-annotate-functions'.
|
|
|
4611 */ );
|
|
|
4612 Vwrite_region_annotations_so_far = Qnil;
|
|
|
4613
|
|
|
4614 DEFVAR_LISP ("inhibit-file-name-handlers", &Vinhibit_file_name_handlers /*
|
|
|
4615 A list of file name handlers that temporarily should not be used.
|
|
|
4616 This applies only to the operation `inhibit-file-name-operation'.
|
|
|
4617 */ );
|
|
|
4618 Vinhibit_file_name_handlers = Qnil;
|
|
|
4619
|
|
|
4620 DEFVAR_LISP ("inhibit-file-name-operation", &Vinhibit_file_name_operation /*
|
|
|
4621 The operation for which `inhibit-file-name-handlers' is applicable.
|
|
|
4622 */ );
|
|
|
4623 Vinhibit_file_name_operation = Qnil;
|
|
|
4624
|
|
|
4625 DEFVAR_LISP ("auto-save-list-file-name", &Vauto_save_list_file_name /*
|
|
|
4626 File name in which we write a list of all auto save file names.
|
|
|
4627 */ );
|
|
|
4628 Vauto_save_list_file_name = Qnil;
|
|
|
4629
|
|
|
4630 DEFVAR_BOOL ("disable-auto-save-when-buffer-shrinks",
|
|
|
4631 &disable_auto_save_when_buffer_shrinks /*
|
|
|
4632 If non-nil, auto-saving is disabled when a buffer shrinks too much.
|
|
|
4633 This is to prevent you from losing your edits if you accidentally
|
|
|
4634 delete a large chunk of the buffer and don't notice it until too late.
|
|
|
4635 Saving the buffer normally turns auto-save back on.
|
|
|
4636 */ );
|
|
|
4637 disable_auto_save_when_buffer_shrinks = 1;
|
|
|
4638 }
|
