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428
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1 /* File IO for XEmacs.
|
|
|
2 Copyright (C) 1985-1988, 1992-1995 Free Software Foundation, Inc.
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2367
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3 Copyright (C) 1996, 2001, 2002, 2003, 2004 Ben Wing.
|
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428
|
4
|
|
|
5 This file is part of XEmacs.
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|
|
6
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|
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7 XEmacs is free software; you can redistribute it and/or modify it
|
|
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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.
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11
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|
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12 XEmacs is distributed in the hope that it will be useful, but WITHOUT
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|
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13 ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
|
|
|
14 FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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|
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15 for more details.
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16
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17 You should have received a copy of the GNU General Public License
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|
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18 along with XEmacs; see the file COPYING. If not, write to
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19 the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
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20 Boston, MA 02111-1307, USA. */
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21
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22 /* Synched up with: Mule 2.0, FSF 19.30. */
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771
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23 /* More syncing: FSF Emacs 19.34.6 by Marc Paquette <marcpa@cam.org>
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24 (Note: Sync messages from Marc Paquette may indicate
|
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|
25 incomplete synching, so beware.) */
|
|
2526
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26 /* Some functions synched with FSF 21.0.103. */
|
|
771
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27 /* Mule-ized completely except for the #if 0-code including decrypt-string
|
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28 and encrypt-string. --ben 7-2-00 */
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|
1333
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29 /* #if 0-code Mule-ized, 2-22-03. --ben */
|
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771
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30
|
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428
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31
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32 #include <config.h>
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33 #include "lisp.h"
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34
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35 #include "buffer.h"
|
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800
|
36 #include "device.h"
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428
|
37 #include "events.h"
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800
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38 #include "file-coding.h"
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428
|
39 #include "frame.h"
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40 #include "insdel.h"
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41 #include "lstream.h"
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2526
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42 #include "profile.h"
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872
|
43 #include "process.h"
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428
|
44 #include "redisplay.h"
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|
|
45 #include "sysdep.h"
|
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872
|
46 #include "window-impl.h"
|
|
771
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47
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428
|
48 #include "sysfile.h"
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|
|
49 #include "sysproc.h"
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|
|
50 #include "syspwd.h"
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|
|
51 #include "systime.h"
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|
|
52 #include "sysdir.h"
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|
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53
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|
|
54 #ifdef HPUX
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|
55 #include <netio.h>
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|
56 #ifdef HPUX_PRE_8_0
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|
|
57 #include <errnet.h>
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|
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58 #endif /* HPUX_PRE_8_0 */
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|
|
59 #endif /* HPUX */
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60
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1315
|
61 #ifdef WIN32_ANY
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|
657
|
62 #define WIN32_FILENAMES
|
|
771
|
63 #include "syswindows.h"
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428
|
64 #define IS_DRIVE(x) isalpha (x)
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65 /* Need to lower-case the drive letter, or else expanded
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|
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66 filenames will sometimes compare inequal, because
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67 `expand-file-name' doesn't always down-case the drive letter. */
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68 #define DRIVE_LETTER(x) tolower (x)
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|
657
|
69 #endif /* WIN32_NATIVE || CYGWIN */
|
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428
|
70
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|
71 int lisp_to_time (Lisp_Object, time_t *);
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|
72 Lisp_Object time_to_lisp (time_t);
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73
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74 /* Nonzero during writing of auto-save files */
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75 static int auto_saving;
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76
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77 /* Set by auto_save_1 to mode of original file so Fwrite_region_internal
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78 will create a new file with the same mode as the original */
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79 static int auto_save_mode_bits;
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80
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81 /* Alist of elements (REGEXP . HANDLER) for file names
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82 whose I/O is done with a special handler. */
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83 Lisp_Object Vfile_name_handler_alist;
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84
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85 /* Format for auto-save files */
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86 Lisp_Object Vauto_save_file_format;
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87
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|
88 /* Lisp functions for translating file formats */
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89 Lisp_Object Qformat_decode, Qformat_annotate_function;
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90
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91 /* Functions to be called to process text properties in inserted file. */
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92 Lisp_Object Vafter_insert_file_functions;
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93
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94 /* Functions to be called to create text property annotations for file. */
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95 Lisp_Object Vwrite_region_annotate_functions;
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96
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97 /* During build_annotations, each time an annotation function is called,
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98 this holds the annotations made by the previous functions. */
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99 Lisp_Object Vwrite_region_annotations_so_far;
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100
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101 /* File name in which we write a list of all our auto save files. */
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102 Lisp_Object Vauto_save_list_file_name;
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103
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444
|
104 /* Prefix used to construct Vauto_save_list_file_name. */
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105 Lisp_Object Vauto_save_list_file_prefix;
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106
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107 /* When non-nil, it prevents auto-save list file creation. */
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|
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108 int inhibit_auto_save_session;
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|
|
109
|
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428
|
110 int disable_auto_save_when_buffer_shrinks;
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|
|
111
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|
|
112 Lisp_Object Vdirectory_sep_char;
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113
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114 /* These variables describe handlers that have "already" had a chance
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115 to handle the current operation.
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116
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117 Vinhibit_file_name_handlers is a list of file name handlers.
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|
|
118 Vinhibit_file_name_operation is the operation being handled.
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|
119 If we try to handle that operation, we ignore those handlers. */
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120
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|
|
121 static Lisp_Object Vinhibit_file_name_handlers;
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|
|
122 static Lisp_Object Vinhibit_file_name_operation;
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|
|
123
|
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563
|
124 Lisp_Object Qfile_already_exists;
|
|
4266
|
125 Lisp_Object Qexcl;
|
|
428
|
126
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|
|
127 Lisp_Object Qauto_save_hook;
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|
|
128 Lisp_Object Qauto_save_error;
|
|
|
129 Lisp_Object Qauto_saving;
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130
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|
|
131 Lisp_Object Qcar_less_than_car;
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132
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|
|
133 Lisp_Object Qcompute_buffer_file_truename;
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|
|
134
|
|
2526
|
135 Lisp_Object QSin_expand_file_name;
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|
|
136
|
|
428
|
137 EXFUN (Frunning_temacs_p, 0);
|
|
|
138
|
|
563
|
139 /* DATA can be anything acceptable to signal_error ().
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|
|
140 */
|
|
|
141
|
|
|
142 DOESNT_RETURN
|
|
|
143 report_file_type_error (Lisp_Object errtype, Lisp_Object oserrmess,
|
|
867
|
144 const CIbyte *string, Lisp_Object data)
|
|
563
|
145 {
|
|
|
146 struct gcpro gcpro1;
|
|
|
147 Lisp_Object errdata = build_error_data (NULL, data);
|
|
|
148
|
|
|
149 GCPRO1 (errdata);
|
|
771
|
150 errdata = Fcons (build_msg_string (string),
|
|
563
|
151 Fcons (oserrmess, errdata));
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|
|
152 signal_error_1 (errtype, errdata);
|
|
801
|
153 /* UNGCPRO; not reached */
|
|
563
|
154 }
|
|
|
155
|
|
|
156 DOESNT_RETURN
|
|
|
157 report_error_with_errno (Lisp_Object errtype,
|
|
867
|
158 const CIbyte *string, Lisp_Object data)
|
|
563
|
159 {
|
|
|
160 report_file_type_error (errtype, lisp_strerror (errno), string, data);
|
|
|
161 }
|
|
|
162
|
|
428
|
163 /* signal a file error when errno contains a meaningful value. */
|
|
|
164
|
|
|
165 DOESNT_RETURN
|
|
867
|
166 report_file_error (const CIbyte *string, Lisp_Object data)
|
|
428
|
167 {
|
|
563
|
168 report_error_with_errno (Qfile_error, string, data);
|
|
428
|
169 }
|
|
|
170
|
|
|
171
|
|
|
172 /* Just like strerror(3), except return a lisp string instead of char *.
|
|
|
173 The string needs to be converted since it may be localized.
|
|
771
|
174 */
|
|
428
|
175 Lisp_Object
|
|
|
176 lisp_strerror (int errnum)
|
|
|
177 {
|
|
771
|
178 Extbyte *ret = strerror (errnum);
|
|
|
179 if (!ret)
|
|
|
180 {
|
|
867
|
181 Ibyte ffff[99];
|
|
771
|
182 qxesprintf (ffff, "Unknown error %d", errnum);
|
|
|
183 return build_intstring (ffff);
|
|
|
184 }
|
|
|
185 return build_ext_string (ret, Qstrerror_encoding);
|
|
428
|
186 }
|
|
|
187
|
|
|
188 static Lisp_Object
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|
|
189 close_file_unwind (Lisp_Object fd)
|
|
|
190 {
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|
|
191 if (CONSP (fd))
|
|
|
192 {
|
|
|
193 if (INTP (XCAR (fd)))
|
|
771
|
194 retry_close (XINT (XCAR (fd)));
|
|
428
|
195
|
|
853
|
196 free_cons (fd);
|
|
428
|
197 }
|
|
|
198 else
|
|
771
|
199 retry_close (XINT (fd));
|
|
428
|
200
|
|
|
201 return Qnil;
|
|
|
202 }
|
|
|
203
|
|
|
204 static Lisp_Object
|
|
|
205 delete_stream_unwind (Lisp_Object stream)
|
|
|
206 {
|
|
|
207 Lstream_delete (XLSTREAM (stream));
|
|
|
208 return Qnil;
|
|
|
209 }
|
|
|
210
|
|
|
211 /* Restore point, having saved it as a marker. */
|
|
|
212
|
|
|
213 static Lisp_Object
|
|
|
214 restore_point_unwind (Lisp_Object point_marker)
|
|
|
215 {
|
|
|
216 BUF_SET_PT (current_buffer, marker_position (point_marker));
|
|
|
217 return Fset_marker (point_marker, Qnil, Qnil);
|
|
|
218 }
|
|
|
219
|
|
|
220
|
|
|
221 Lisp_Object Qexpand_file_name;
|
|
|
222 Lisp_Object Qfile_truename;
|
|
|
223 Lisp_Object Qsubstitute_in_file_name;
|
|
|
224 Lisp_Object Qdirectory_file_name;
|
|
|
225 Lisp_Object Qfile_name_directory;
|
|
|
226 Lisp_Object Qfile_name_nondirectory;
|
|
996
|
227 Lisp_Object Qfile_name_sans_extension;
|
|
428
|
228 Lisp_Object Qunhandled_file_name_directory;
|
|
|
229 Lisp_Object Qfile_name_as_directory;
|
|
|
230 Lisp_Object Qcopy_file;
|
|
|
231 Lisp_Object Qmake_directory_internal;
|
|
|
232 Lisp_Object Qdelete_directory;
|
|
|
233 Lisp_Object Qdelete_file;
|
|
|
234 Lisp_Object Qrename_file;
|
|
|
235 Lisp_Object Qadd_name_to_file;
|
|
|
236 Lisp_Object Qmake_symbolic_link;
|
|
844
|
237 Lisp_Object Qmake_temp_name;
|
|
428
|
238 Lisp_Object Qfile_exists_p;
|
|
|
239 Lisp_Object Qfile_executable_p;
|
|
|
240 Lisp_Object Qfile_readable_p;
|
|
|
241 Lisp_Object Qfile_symlink_p;
|
|
|
242 Lisp_Object Qfile_writable_p;
|
|
|
243 Lisp_Object Qfile_directory_p;
|
|
|
244 Lisp_Object Qfile_regular_p;
|
|
|
245 Lisp_Object Qfile_accessible_directory_p;
|
|
|
246 Lisp_Object Qfile_modes;
|
|
|
247 Lisp_Object Qset_file_modes;
|
|
|
248 Lisp_Object Qfile_newer_than_file_p;
|
|
|
249 Lisp_Object Qinsert_file_contents;
|
|
|
250 Lisp_Object Qwrite_region;
|
|
|
251 Lisp_Object Qverify_visited_file_modtime;
|
|
|
252 Lisp_Object Qset_visited_file_modtime;
|
|
|
253
|
|
|
254 /* If FILENAME is handled specially on account of its syntax,
|
|
|
255 return its handler function. Otherwise, return nil. */
|
|
|
256
|
|
|
257 DEFUN ("find-file-name-handler", Ffind_file_name_handler, 1, 2, 0, /*
|
|
|
258 Return FILENAME's handler function for OPERATION, if it has one.
|
|
|
259 Otherwise, return nil.
|
|
|
260 A file name is handled if one of the regular expressions in
|
|
|
261 `file-name-handler-alist' matches it.
|
|
|
262
|
|
|
263 If OPERATION equals `inhibit-file-name-operation', then we ignore
|
|
|
264 any handlers that are members of `inhibit-file-name-handlers',
|
|
|
265 but we still do run any other handlers. This lets handlers
|
|
|
266 use the standard functions without calling themselves recursively.
|
|
751
|
267
|
|
|
268 Otherwise, OPERATION is the name of a funcall'able function.
|
|
428
|
269 */
|
|
|
270 (filename, operation))
|
|
|
271 {
|
|
|
272 /* This function does not GC */
|
|
|
273 /* This function can be called during GC */
|
|
|
274 /* This function must not munge the match data. */
|
|
2367
|
275 Lisp_Object inhibited_handlers;
|
|
428
|
276
|
|
|
277 CHECK_STRING (filename);
|
|
|
278
|
|
|
279 if (EQ (operation, Vinhibit_file_name_operation))
|
|
|
280 inhibited_handlers = Vinhibit_file_name_handlers;
|
|
|
281 else
|
|
|
282 inhibited_handlers = Qnil;
|
|
|
283
|
|
2367
|
284 {
|
|
|
285 EXTERNAL_LIST_LOOP_2 (elt, Vfile_name_handler_alist)
|
|
|
286 {
|
|
|
287 if (CONSP (elt))
|
|
|
288 {
|
|
|
289 Lisp_Object string = XCAR (elt);
|
|
|
290 if (STRINGP (string)
|
|
|
291 && (fast_lisp_string_match (string, filename) >= 0))
|
|
|
292 {
|
|
|
293 Lisp_Object handler = XCDR (elt);
|
|
|
294 if (NILP (Fmemq (handler, inhibited_handlers)))
|
|
|
295 return handler;
|
|
|
296 }
|
|
|
297 }
|
|
|
298 }
|
|
|
299 }
|
|
428
|
300 return Qnil;
|
|
|
301 }
|
|
|
302
|
|
|
303 static Lisp_Object
|
|
|
304 call2_check_string (Lisp_Object fn, Lisp_Object arg0, Lisp_Object arg1)
|
|
|
305 {
|
|
|
306 /* This function can call lisp */
|
|
|
307 Lisp_Object result = call2 (fn, arg0, arg1);
|
|
|
308 CHECK_STRING (result);
|
|
|
309 return result;
|
|
|
310 }
|
|
|
311
|
|
|
312 static Lisp_Object
|
|
|
313 call2_check_string_or_nil (Lisp_Object fn, Lisp_Object arg0, Lisp_Object arg1)
|
|
|
314 {
|
|
|
315 /* This function can call lisp */
|
|
|
316 Lisp_Object result = call2 (fn, arg0, arg1);
|
|
|
317 if (!NILP (result))
|
|
|
318 CHECK_STRING (result);
|
|
|
319 return result;
|
|
|
320 }
|
|
|
321
|
|
|
322 static Lisp_Object
|
|
|
323 call3_check_string (Lisp_Object fn, Lisp_Object arg0,
|
|
|
324 Lisp_Object arg1, Lisp_Object arg2)
|
|
|
325 {
|
|
|
326 /* This function can call lisp */
|
|
|
327 Lisp_Object result = call3 (fn, arg0, arg1, arg2);
|
|
|
328 CHECK_STRING (result);
|
|
|
329 return result;
|
|
|
330 }
|
|
|
331
|
|
|
332
|
|
2526
|
333
|
|
|
334 Ibyte *
|
|
|
335 find_end_of_directory_component (const Ibyte *path, Bytecount len)
|
|
|
336 {
|
|
|
337 const Ibyte *p = path + len;
|
|
|
338
|
|
|
339 while (p != path && !IS_DIRECTORY_SEP (p[-1])
|
|
|
340 #ifdef WIN32_FILENAMES
|
|
|
341 /* only recognise drive specifier at the beginning */
|
|
|
342 && !(p[-1] == ':'
|
|
|
343 /* handle the "/:d:foo" and "/:foo" cases correctly */
|
|
|
344 && ((p == path + 2 && !IS_DIRECTORY_SEP (*path))
|
|
|
345 || (p == path + 4 && IS_DIRECTORY_SEP (*path))))
|
|
|
346 #endif
|
|
|
347 ) p--;
|
|
|
348
|
|
|
349 return (Ibyte *) p;
|
|
|
350 }
|
|
|
351
|
|
428
|
352 DEFUN ("file-name-directory", Ffile_name_directory, 1, 1, 0, /*
|
|
444
|
353 Return the directory component in file name FILENAME.
|
|
|
354 Return nil if FILENAME does not include a directory.
|
|
428
|
355 Otherwise return a directory spec.
|
|
|
356 Given a Unix syntax file name, returns a string ending in slash.
|
|
|
357 */
|
|
444
|
358 (filename))
|
|
428
|
359 {
|
|
442
|
360 /* This function can GC. GC checked 2000-07-28 ben */
|
|
771
|
361 /* This function synched with Emacs 21.0.103. */
|
|
867
|
362 Ibyte *beg;
|
|
|
363 Ibyte *p;
|
|
428
|
364 Lisp_Object handler;
|
|
|
365
|
|
444
|
366 CHECK_STRING (filename);
|
|
428
|
367
|
|
|
368 /* If the file name has special constructs in it,
|
|
|
369 call the corresponding file handler. */
|
|
444
|
370 handler = Ffind_file_name_handler (filename, Qfile_name_directory);
|
|
428
|
371 if (!NILP (handler))
|
|
444
|
372 return call2_check_string_or_nil (handler, Qfile_name_directory, filename);
|
|
428
|
373
|
|
|
374 #ifdef FILE_SYSTEM_CASE
|
|
444
|
375 filename = FILE_SYSTEM_CASE (filename);
|
|
428
|
376 #endif
|
|
444
|
377 beg = XSTRING_DATA (filename);
|
|
771
|
378 /* XEmacs: no need to alloca-copy here */
|
|
2526
|
379 p = find_end_of_directory_component (beg, XSTRING_LENGTH (filename));
|
|
428
|
380
|
|
|
381 if (p == beg)
|
|
|
382 return Qnil;
|
|
442
|
383 #ifdef WIN32_NATIVE
|
|
428
|
384 /* Expansion of "c:" to drive and default directory. */
|
|
771
|
385 if (p[-1] == ':')
|
|
428
|
386 {
|
|
867
|
387 Ibyte *res;
|
|
|
388 Ibyte *wd = mswindows_getdcwd (toupper (*beg) - 'A' + 1);
|
|
771
|
389
|
|
2367
|
390 res = alloca_ibytes ((wd ? qxestrlen (wd) : 0) + 10); /* go overboard */
|
|
1116
|
391 res[0] = '\0';
|
|
771
|
392 if (p == beg + 4 && IS_DIRECTORY_SEP (*beg) && beg[1] == ':')
|
|
|
393 {
|
|
|
394 qxestrncpy (res, beg, 2);
|
|
|
395 beg += 2;
|
|
1116
|
396 res[2] = '\0';
|
|
771
|
397 }
|
|
|
398
|
|
|
399 if (wd)
|
|
428
|
400 {
|
|
3648
|
401 int size;
|
|
771
|
402 qxestrcat (res, wd);
|
|
3648
|
403 size = qxestrlen (res);
|
|
|
404 if (!IS_DIRECTORY_SEP (res[size - 1]))
|
|
|
405 {
|
|
|
406 res[size] = DIRECTORY_SEP;
|
|
|
407 res[size + 1] = '\0';
|
|
|
408 }
|
|
428
|
409 beg = res;
|
|
771
|
410 p = beg + qxestrlen (beg);
|
|
428
|
411 }
|
|
3648
|
412 else
|
|
|
413 {
|
|
|
414 return Qnil;
|
|
|
415 }
|
|
771
|
416 if (wd)
|
|
1726
|
417 xfree (wd, Ibyte *);
|
|
428
|
418 }
|
|
771
|
419
|
|
|
420 #if 0 /* No! This screws up efs, which calls file-name-directory on URL's
|
|
|
421 and expects the slashes to be left alone. This is here because of
|
|
|
422 an analogous call in FSF 21. */
|
|
|
423 {
|
|
|
424 Bytecount len = p - beg;
|
|
867
|
425 Ibyte *newbeg = alloca_ibytes (len + 1);
|
|
771
|
426
|
|
|
427 qxestrncpy (newbeg, beg, len);
|
|
|
428 newbeg[len] = '\0';
|
|
|
429 newbeg = mswindows_canonicalize_filename (newbeg);
|
|
1726
|
430 return build_intstring (newbeg);
|
|
771
|
431 }
|
|
|
432 #endif
|
|
|
433 #endif /* not WIN32_NATIVE */
|
|
428
|
434 return make_string (beg, p - beg);
|
|
|
435 }
|
|
|
436
|
|
|
437 DEFUN ("file-name-nondirectory", Ffile_name_nondirectory, 1, 1, 0, /*
|
|
444
|
438 Return file name FILENAME sans its directory.
|
|
428
|
439 For example, in a Unix-syntax file name,
|
|
|
440 this is everything after the last slash,
|
|
|
441 or the entire name if it contains no slash.
|
|
|
442 */
|
|
444
|
443 (filename))
|
|
428
|
444 {
|
|
442
|
445 /* This function can GC. GC checked 2000-07-28 ben */
|
|
771
|
446 /* This function synched with Emacs 21.0.103. */
|
|
867
|
447 Ibyte *beg, *p, *end;
|
|
428
|
448 Lisp_Object handler;
|
|
|
449
|
|
444
|
450 CHECK_STRING (filename);
|
|
428
|
451
|
|
|
452 /* If the file name has special constructs in it,
|
|
|
453 call the corresponding file handler. */
|
|
444
|
454 handler = Ffind_file_name_handler (filename, Qfile_name_nondirectory);
|
|
428
|
455 if (!NILP (handler))
|
|
444
|
456 return call2_check_string (handler, Qfile_name_nondirectory, filename);
|
|
|
457
|
|
|
458 beg = XSTRING_DATA (filename);
|
|
|
459 end = p = beg + XSTRING_LENGTH (filename);
|
|
428
|
460
|
|
771
|
461 while (p != beg && !IS_DIRECTORY_SEP (p[-1])
|
|
657
|
462 #ifdef WIN32_FILENAMES
|
|
771
|
463 /* only recognise drive specifier at beginning */
|
|
|
464 && !(p[-1] == ':'
|
|
|
465 /* handle the "/:d:foo" case correctly */
|
|
|
466 && (p == beg + 2 || (p == beg + 4 && IS_DIRECTORY_SEP (*beg))))
|
|
428
|
467 #endif
|
|
771
|
468 )
|
|
|
469 p--;
|
|
428
|
470
|
|
|
471 return make_string (p, end - p);
|
|
|
472 }
|
|
|
473
|
|
|
474 DEFUN ("unhandled-file-name-directory", Funhandled_file_name_directory, 1, 1, 0, /*
|
|
|
475 Return a directly usable directory name somehow associated with FILENAME.
|
|
|
476 A `directly usable' directory name is one that may be used without the
|
|
|
477 intervention of any file handler.
|
|
|
478 If FILENAME is a directly usable file itself, return
|
|
|
479 \(file-name-directory FILENAME).
|
|
|
480 The `call-process' and `start-process' functions use this function to
|
|
|
481 get a current directory to run processes in.
|
|
|
482 */
|
|
444
|
483 (filename))
|
|
428
|
484 {
|
|
442
|
485 /* This function can GC. GC checked 2000-07-28 ben */
|
|
428
|
486 Lisp_Object handler;
|
|
|
487
|
|
|
488 /* If the file name has special constructs in it,
|
|
|
489 call the corresponding file handler. */
|
|
|
490 handler = Ffind_file_name_handler (filename, Qunhandled_file_name_directory);
|
|
|
491 if (!NILP (handler))
|
|
|
492 return call2 (handler, Qunhandled_file_name_directory,
|
|
|
493 filename);
|
|
|
494
|
|
|
495 return Ffile_name_directory (filename);
|
|
|
496 }
|
|
|
497
|
|
|
498
|
|
867
|
499 static Ibyte *
|
|
|
500 file_name_as_directory (Ibyte *out, Ibyte *in)
|
|
428
|
501 {
|
|
442
|
502 /* This function cannot GC */
|
|
771
|
503 int size = qxestrlen (in);
|
|
428
|
504
|
|
|
505 if (size == 0)
|
|
|
506 {
|
|
|
507 out[0] = '.';
|
|
|
508 out[1] = DIRECTORY_SEP;
|
|
|
509 out[2] = '\0';
|
|
|
510 }
|
|
|
511 else
|
|
|
512 {
|
|
771
|
513 qxestrcpy (out, in);
|
|
428
|
514 /* Append a slash if necessary */
|
|
|
515 if (!IS_ANY_SEP (out[size-1]))
|
|
|
516 {
|
|
|
517 out[size] = DIRECTORY_SEP;
|
|
|
518 out[size + 1] = '\0';
|
|
|
519 }
|
|
|
520 }
|
|
|
521 return out;
|
|
|
522 }
|
|
|
523
|
|
|
524 DEFUN ("file-name-as-directory", Ffile_name_as_directory, 1, 1, 0, /*
|
|
|
525 Return a string representing file FILENAME interpreted as a directory.
|
|
|
526 This operation exists because a directory is also a file, but its name as
|
|
|
527 a directory is different from its name as a file.
|
|
|
528 The result can be used as the value of `default-directory'
|
|
|
529 or passed as second argument to `expand-file-name'.
|
|
|
530 For a Unix-syntax file name, just appends a slash,
|
|
|
531 except for (file-name-as-directory \"\") => \"./\".
|
|
|
532 */
|
|
444
|
533 (filename))
|
|
428
|
534 {
|
|
442
|
535 /* This function can GC. GC checked 2000-07-28 ben */
|
|
867
|
536 Ibyte *buf;
|
|
428
|
537 Lisp_Object handler;
|
|
|
538
|
|
444
|
539 CHECK_STRING (filename);
|
|
428
|
540
|
|
|
541 /* If the file name has special constructs in it,
|
|
|
542 call the corresponding file handler. */
|
|
444
|
543 handler = Ffind_file_name_handler (filename, Qfile_name_as_directory);
|
|
428
|
544 if (!NILP (handler))
|
|
444
|
545 return call2_check_string (handler, Qfile_name_as_directory, filename);
|
|
|
546
|
|
867
|
547 buf = alloca_ibytes (XSTRING_LENGTH (filename) + 10);
|
|
2526
|
548 file_name_as_directory (buf, XSTRING_DATA (filename));
|
|
|
549 if (qxestrcmp (buf, XSTRING_DATA (filename)))
|
|
|
550 return build_intstring (buf);
|
|
|
551 else
|
|
|
552 return filename;
|
|
428
|
553 }
|
|
|
554
|
|
|
555 /*
|
|
|
556 * Convert from directory name to filename.
|
|
|
557 * On UNIX, it's simple: just make sure there isn't a terminating /
|
|
|
558 *
|
|
|
559 * Value is nonzero if the string output is different from the input.
|
|
|
560 */
|
|
|
561
|
|
|
562 static int
|
|
867
|
563 directory_file_name (const Ibyte *src, Ibyte *dst)
|
|
428
|
564 {
|
|
442
|
565 /* This function cannot GC */
|
|
771
|
566 long slen = qxestrlen (src);
|
|
428
|
567 /* Process as Unix format: just remove any final slash.
|
|
|
568 But leave "/" unchanged; do not change it to "". */
|
|
771
|
569 qxestrcpy (dst, src);
|
|
428
|
570 if (slen > 1
|
|
|
571 && IS_DIRECTORY_SEP (dst[slen - 1])
|
|
657
|
572 #ifdef WIN32_FILENAMES
|
|
428
|
573 && !IS_ANY_SEP (dst[slen - 2])
|
|
657
|
574 #endif /* WIN32_FILENAMES */
|
|
428
|
575 )
|
|
|
576 dst[slen - 1] = 0;
|
|
|
577 return 1;
|
|
|
578 }
|
|
|
579
|
|
|
580 DEFUN ("directory-file-name", Fdirectory_file_name, 1, 1, 0, /*
|
|
444
|
581 Return the file name of the directory named DIRECTORY.
|
|
|
582 This is the name of the file that holds the data for the directory.
|
|
428
|
583 This operation exists because a directory is also a file, but its name as
|
|
|
584 a directory is different from its name as a file.
|
|
|
585 In Unix-syntax, this function just removes the final slash.
|
|
|
586 */
|
|
|
587 (directory))
|
|
|
588 {
|
|
442
|
589 /* This function can GC. GC checked 2000-07-28 ben */
|
|
867
|
590 Ibyte *buf;
|
|
428
|
591 Lisp_Object handler;
|
|
|
592
|
|
|
593 CHECK_STRING (directory);
|
|
|
594
|
|
|
595 #if 0 /* #### WTF? */
|
|
|
596 if (NILP (directory))
|
|
|
597 return Qnil;
|
|
|
598 #endif
|
|
|
599
|
|
|
600 /* If the file name has special constructs in it,
|
|
|
601 call the corresponding file handler. */
|
|
|
602 handler = Ffind_file_name_handler (directory, Qdirectory_file_name);
|
|
|
603 if (!NILP (handler))
|
|
|
604 return call2_check_string (handler, Qdirectory_file_name, directory);
|
|
2367
|
605 buf = alloca_ibytes (XSTRING_LENGTH (directory) + 20);
|
|
771
|
606 directory_file_name (XSTRING_DATA (directory), buf);
|
|
|
607 return build_intstring (buf);
|
|
428
|
608 }
|
|
|
609
|
|
|
610 /* Fmake_temp_name used to be a simple wrapper around mktemp(), but it
|
|
|
611 proved too broken for our purposes (it supported only 26 or 62
|
|
|
612 unique names under some implementations). For example, this
|
|
|
613 arbitrary limit broke generation of Gnus Incoming* files.
|
|
|
614
|
|
|
615 This implementation is better than what one usually finds in libc.
|
|
|
616 --hniksic */
|
|
|
617
|
|
442
|
618 static unsigned int temp_name_rand;
|
|
|
619
|
|
428
|
620 DEFUN ("make-temp-name", Fmake_temp_name, 1, 1, 0, /*
|
|
442
|
621 Generate a temporary file name starting with PREFIX.
|
|
428
|
622 The Emacs process number forms part of the result, so there is no
|
|
|
623 danger of generating a name being used by another process.
|
|
|
624
|
|
|
625 In addition, this function makes an attempt to choose a name that
|
|
|
626 does not specify an existing file. To make this work, PREFIX should
|
|
4266
|
627 be an absolute file name.
|
|
|
628
|
|
|
629 This function is analagous to mktemp(3) under POSIX, and as with it, there
|
|
|
630 exists a race condition between the test for the existence of the new file
|
|
|
631 and its creation. See `make-temp-name' for a function which avoids this
|
|
|
632 race condition by specifying the appropriate flags to `write-region'.
|
|
428
|
633 */
|
|
|
634 (prefix))
|
|
|
635 {
|
|
442
|
636 static const char tbl[64] =
|
|
|
637 {
|
|
428
|
638 'A','B','C','D','E','F','G','H',
|
|
|
639 'I','J','K','L','M','N','O','P',
|
|
|
640 'Q','R','S','T','U','V','W','X',
|
|
|
641 'Y','Z','a','b','c','d','e','f',
|
|
|
642 'g','h','i','j','k','l','m','n',
|
|
|
643 'o','p','q','r','s','t','u','v',
|
|
|
644 'w','x','y','z','0','1','2','3',
|
|
442
|
645 '4','5','6','7','8','9','-','_'
|
|
|
646 };
|
|
428
|
647
|
|
|
648 Bytecount len;
|
|
867
|
649 Ibyte *p, *data;
|
|
844
|
650 Lisp_Object handler;
|
|
428
|
651
|
|
|
652 CHECK_STRING (prefix);
|
|
844
|
653 handler = Ffind_file_name_handler (prefix, Qmake_temp_name);
|
|
|
654 if (!NILP (handler))
|
|
|
655 return call2_check_string (handler, Qmake_temp_name, prefix);
|
|
428
|
656
|
|
|
657 /* I was tempted to apply Fexpand_file_name on PREFIX here, but it's
|
|
|
658 a bad idea because:
|
|
|
659
|
|
|
660 1) It might change the prefix, so the resulting string might not
|
|
|
661 begin with PREFIX. This violates the principle of least
|
|
|
662 surprise.
|
|
|
663
|
|
|
664 2) It breaks under many unforeseeable circumstances, such as with
|
|
|
665 the code that uses (make-temp-name "") instead of
|
|
|
666 (make-temp-name "./").
|
|
|
667
|
|
844
|
668 [[ 3) It might yield unexpected (to stat(2)) results in the presence
|
|
|
669 of EFS and file name handlers.]] Now that we check for a handler,
|
|
|
670 that's less of a concern. --ben */
|
|
428
|
671
|
|
|
672 len = XSTRING_LENGTH (prefix);
|
|
867
|
673 data = alloca_ibytes (len + 7);
|
|
428
|
674 memcpy (data, XSTRING_DATA (prefix), len);
|
|
|
675 p = data + len;
|
|
771
|
676 p[6] = '\0';
|
|
428
|
677
|
|
|
678 /* VAL is created by adding 6 characters to PREFIX. The first three
|
|
|
679 are the PID of this process, in base 64, and the second three are
|
|
442
|
680 a pseudo-random number seeded from process startup time. This
|
|
|
681 ensures 262144 unique file names per PID per PREFIX per machine. */
|
|
|
682
|
|
|
683 {
|
|
771
|
684 unsigned int pid = (unsigned int) qxe_getpid ();
|
|
442
|
685 *p++ = tbl[(pid >> 0) & 63];
|
|
|
686 *p++ = tbl[(pid >> 6) & 63];
|
|
|
687 *p++ = tbl[(pid >> 12) & 63];
|
|
|
688 }
|
|
428
|
689
|
|
|
690 /* Here we try to minimize useless stat'ing when this function is
|
|
|
691 invoked many times successively with the same PREFIX. We achieve
|
|
442
|
692 this by using a very pseudo-random number generator to generate
|
|
|
693 file names unique to this process, with a very long cycle. */
|
|
428
|
694
|
|
|
695 while (1)
|
|
|
696 {
|
|
|
697 struct stat ignored;
|
|
442
|
698
|
|
|
699 p[0] = tbl[(temp_name_rand >> 0) & 63];
|
|
|
700 p[1] = tbl[(temp_name_rand >> 6) & 63];
|
|
|
701 p[2] = tbl[(temp_name_rand >> 12) & 63];
|
|
428
|
702
|
|
|
703 /* Poor man's congruential RN generator. Replace with ++count
|
|
|
704 for debugging. */
|
|
442
|
705 temp_name_rand += 25229;
|
|
|
706 temp_name_rand %= 225307;
|
|
428
|
707
|
|
|
708 QUIT;
|
|
|
709
|
|
771
|
710 if (qxe_stat (data, &ignored) < 0)
|
|
428
|
711 {
|
|
|
712 /* We want to return only if errno is ENOENT. */
|
|
|
713 if (errno == ENOENT)
|
|
771
|
714 return make_string (data, len + 6);
|
|
428
|
715
|
|
|
716 /* The error here is dubious, but there is little else we
|
|
|
717 can do. The alternatives are to return nil, which is
|
|
|
718 as bad as (and in many cases worse than) throwing the
|
|
|
719 error, or to ignore the error, which will likely result
|
|
|
720 in inflooping. */
|
|
|
721 report_file_error ("Cannot create temporary name for prefix",
|
|
563
|
722 prefix);
|
|
428
|
723 return Qnil; /* not reached */
|
|
|
724 }
|
|
|
725 }
|
|
|
726 }
|
|
|
727
|
|
|
728
|
|
771
|
729
|
|
428
|
730 DEFUN ("expand-file-name", Fexpand_file_name, 1, 2, 0, /*
|
|
|
731 Convert filename NAME to absolute, and canonicalize it.
|
|
|
732 Second arg DEFAULT-DIRECTORY is directory to start with if NAME is relative
|
|
|
733 (does not start with slash); if DEFAULT-DIRECTORY is nil or missing,
|
|
444
|
734 the current buffer's value of `default-directory' is used.
|
|
428
|
735 File name components that are `.' are removed, and
|
|
|
736 so are file name components followed by `..', along with the `..' itself;
|
|
|
737 note that these simplifications are done without checking the resulting
|
|
|
738 file names in the file system.
|
|
|
739 An initial `~/' expands to your home directory.
|
|
|
740 An initial `~USER/' expands to USER's home directory.
|
|
|
741 See also the function `substitute-in-file-name'.
|
|
|
742 */
|
|
|
743 (name, default_directory))
|
|
|
744 {
|
|
771
|
745 /* This function can GC. GC-checked 2000-11-18.
|
|
|
746 This function synched with Emacs 21.0.103. */
|
|
867
|
747 Ibyte *nm;
|
|
|
748
|
|
|
749 Ibyte *newdir, *p, *o;
|
|
428
|
750 int tlen;
|
|
867
|
751 Ibyte *target;
|
|
657
|
752 #ifdef WIN32_FILENAMES
|
|
428
|
753 int drive = 0;
|
|
|
754 int collapse_newdir = 1;
|
|
771
|
755 /* XEmacs note: This concerns the special '/:' syntax for preventing
|
|
|
756 wildcards and such. We don't support this currently but I'm
|
|
|
757 keeping the code here in case we do. */
|
|
|
758 int is_escaped = 0;
|
|
657
|
759 #endif
|
|
|
760 #ifndef WIN32_NATIVE
|
|
428
|
761 struct passwd *pw;
|
|
771
|
762 #endif
|
|
428
|
763 int length;
|
|
446
|
764 Lisp_Object handler = Qnil;
|
|
|
765 struct gcpro gcpro1, gcpro2, gcpro3;
|
|
2526
|
766 PROFILE_DECLARE ();
|
|
|
767
|
|
|
768 PROFILE_RECORD_ENTERING_SECTION (QSin_expand_file_name);
|
|
442
|
769
|
|
|
770 /* both of these get set below */
|
|
446
|
771 GCPRO3 (name, default_directory, handler);
|
|
428
|
772
|
|
|
773 CHECK_STRING (name);
|
|
|
774
|
|
|
775 /* If the file name has special constructs in it,
|
|
|
776 call the corresponding file handler. */
|
|
|
777 handler = Ffind_file_name_handler (name, Qexpand_file_name);
|
|
|
778 if (!NILP (handler))
|
|
2526
|
779 RETURN_UNGCPRO_EXIT_PROFILING (QSin_expand_file_name,
|
|
|
780 call3_check_string
|
|
|
781 (handler, Qexpand_file_name,
|
|
|
782 name, default_directory));
|
|
428
|
783
|
|
|
784 /* Use the buffer's default-directory if DEFAULT_DIRECTORY is omitted. */
|
|
|
785 if (NILP (default_directory))
|
|
|
786 default_directory = current_buffer->directory;
|
|
|
787 if (! STRINGP (default_directory))
|
|
771
|
788 #ifdef WIN32_NATIVE
|
|
|
789 default_directory = build_string ("C:\\");
|
|
|
790 #else
|
|
428
|
791 default_directory = build_string ("/");
|
|
771
|
792 #endif
|
|
428
|
793
|
|
|
794 if (!NILP (default_directory))
|
|
|
795 {
|
|
|
796 handler = Ffind_file_name_handler (default_directory, Qexpand_file_name);
|
|
|
797 if (!NILP (handler))
|
|
2526
|
798 RETURN_UNGCPRO_EXIT_PROFILING (QSin_expand_file_name,
|
|
|
799 call3 (handler, Qexpand_file_name,
|
|
|
800 name, default_directory));
|
|
428
|
801 }
|
|
|
802
|
|
|
803 o = XSTRING_DATA (default_directory);
|
|
|
804
|
|
|
805 /* Make sure DEFAULT_DIRECTORY is properly expanded.
|
|
|
806 It would be better to do this down below where we actually use
|
|
|
807 default_directory. Unfortunately, calling Fexpand_file_name recursively
|
|
|
808 could invoke GC, and the strings might be relocated. This would
|
|
|
809 be annoying because we have pointers into strings lying around
|
|
|
810 that would need adjusting, and people would add new pointers to
|
|
|
811 the code and forget to adjust them, resulting in intermittent bugs.
|
|
|
812 Putting this call here avoids all that crud.
|
|
|
813
|
|
|
814 The EQ test avoids infinite recursion. */
|
|
|
815 if (! NILP (default_directory) && !EQ (default_directory, name)
|
|
|
816 /* Save time in some common cases - as long as default_directory
|
|
|
817 is not relative, it can be canonicalized with name below (if it
|
|
|
818 is needed at all) without requiring it to be expanded now. */
|
|
657
|
819 #ifdef WIN32_FILENAMES
|
|
442
|
820 /* Detect Windows file names with drive specifiers. */
|
|
428
|
821 && ! (IS_DRIVE (o[0]) && (IS_DEVICE_SEP (o[1]) && IS_DIRECTORY_SEP (o[2])))
|
|
|
822 /* Detect Windows file names in UNC format. */
|
|
|
823 && ! (IS_DIRECTORY_SEP (o[0]) && IS_DIRECTORY_SEP (o[1]))
|
|
657
|
824 #endif /* not WIN32_FILENAMES */
|
|
|
825 #ifndef WIN32_NATIVE
|
|
428
|
826 /* Detect Unix absolute file names (/... alone is not absolute on
|
|
442
|
827 Windows). */
|
|
428
|
828 && ! (IS_DIRECTORY_SEP (o[0]))
|
|
442
|
829 #endif /* not WIN32_NATIVE */
|
|
428
|
830 )
|
|
442
|
831
|
|
|
832 default_directory = Fexpand_file_name (default_directory, Qnil);
|
|
428
|
833
|
|
|
834 #ifdef FILE_SYSTEM_CASE
|
|
|
835 name = FILE_SYSTEM_CASE (name);
|
|
|
836 #endif
|
|
|
837
|
|
|
838 /* #### dmoore - this is ugly, clean this up. Looks like nm pointing
|
|
|
839 into name should be safe during all of this, though. */
|
|
|
840 nm = XSTRING_DATA (name);
|
|
|
841
|
|
657
|
842 #ifdef WIN32_FILENAMES
|
|
428
|
843 /* We will force directory separators to be either all \ or /, so make
|
|
|
844 a local copy to modify, even if there ends up being no change. */
|
|
867
|
845 nm = qxestrcpy (alloca_ibytes (qxestrlen (nm) + 1), nm);
|
|
771
|
846
|
|
|
847 /* Note if special escape prefix is present, but remove for now. */
|
|
|
848 if (nm[0] == '/' && nm[1] == ':')
|
|
|
849 {
|
|
|
850 is_escaped = 1;
|
|
|
851 nm += 2;
|
|
|
852 }
|
|
428
|
853
|
|
|
854 /* Find and remove drive specifier if present; this makes nm absolute
|
|
|
855 even if the rest of the name appears to be relative. */
|
|
|
856 {
|
|
867
|
857 Ibyte *colon = qxestrrchr (nm, ':');
|
|
428
|
858
|
|
|
859 if (colon)
|
|
657
|
860 {
|
|
428
|
861 /* Only recognize colon as part of drive specifier if there is a
|
|
|
862 single alphabetic character preceding the colon (and if the
|
|
|
863 character before the drive letter, if present, is a directory
|
|
|
864 separator); this is to support the remote system syntax used by
|
|
|
865 ange-ftp, and the "po:username" syntax for POP mailboxes. */
|
|
|
866 look_again:
|
|
|
867 if (nm == colon)
|
|
|
868 nm++;
|
|
|
869 else if (IS_DRIVE (colon[-1])
|
|
|
870 && (colon == nm + 1 || IS_DIRECTORY_SEP (colon[-2])))
|
|
|
871 {
|
|
|
872 drive = colon[-1];
|
|
|
873 nm = colon + 1;
|
|
|
874 }
|
|
|
875 else
|
|
|
876 {
|
|
|
877 while (--colon >= nm)
|
|
|
878 if (colon[0] == ':')
|
|
|
879 goto look_again;
|
|
|
880 }
|
|
657
|
881 }
|
|
428
|
882 }
|
|
|
883
|
|
|
884 /* If we see "c://somedir", we want to strip the first slash after the
|
|
|
885 colon when stripping the drive letter. Otherwise, this expands to
|
|
|
886 "//somedir". */
|
|
|
887 if (drive && IS_DIRECTORY_SEP (nm[0]) && IS_DIRECTORY_SEP (nm[1]))
|
|
|
888 nm++;
|
|
657
|
889 #endif /* WIN32_FILENAMES */
|
|
428
|
890
|
|
771
|
891 #ifdef WIN32_FILENAMES
|
|
|
892 /* Discard any previous drive specifier if nm is now in UNC format. */
|
|
|
893 if (IS_DIRECTORY_SEP (nm[0]) && IS_DIRECTORY_SEP (nm[1]))
|
|
|
894 {
|
|
|
895 drive = 0;
|
|
|
896 }
|
|
|
897 #endif
|
|
|
898
|
|
428
|
899 /* If nm is absolute, look for /./ or /../ sequences; if none are
|
|
|
900 found, we can probably return right away. We will avoid allocating
|
|
|
901 a new string if name is already fully expanded. */
|
|
|
902 if (
|
|
|
903 IS_DIRECTORY_SEP (nm[0])
|
|
442
|
904 #ifdef WIN32_NATIVE
|
|
771
|
905 && (drive || IS_DIRECTORY_SEP (nm[1])) && !is_escaped
|
|
428
|
906 #endif
|
|
|
907 )
|
|
|
908 {
|
|
|
909 /* If it turns out that the filename we want to return is just a
|
|
|
910 suffix of FILENAME, we don't need to go through and edit
|
|
|
911 things; we just need to construct a new string using data
|
|
|
912 starting at the middle of FILENAME. If we set lose to a
|
|
|
913 non-zero value, that means we've discovered that we can't do
|
|
|
914 that cool trick. */
|
|
|
915 int lose = 0;
|
|
|
916
|
|
|
917 p = nm;
|
|
|
918 while (*p)
|
|
|
919 {
|
|
|
920 /* Since we know the name is absolute, we can assume that each
|
|
|
921 element starts with a "/". */
|
|
|
922
|
|
|
923 /* "." and ".." are hairy. */
|
|
|
924 if (IS_DIRECTORY_SEP (p[0])
|
|
|
925 && p[1] == '.'
|
|
|
926 && (IS_DIRECTORY_SEP (p[2])
|
|
|
927 || p[2] == 0
|
|
|
928 || (p[2] == '.' && (IS_DIRECTORY_SEP (p[3])
|
|
|
929 || p[3] == 0))))
|
|
|
930 lose = 1;
|
|
771
|
931 /* We want to replace multiple `/' in a row with a single
|
|
|
932 slash. */
|
|
|
933 else if (p > nm
|
|
|
934 && IS_DIRECTORY_SEP (p[0])
|
|
|
935 && IS_DIRECTORY_SEP (p[1]))
|
|
|
936 lose = 1;
|
|
428
|
937 p++;
|
|
|
938 }
|
|
|
939 if (!lose)
|
|
|
940 {
|
|
657
|
941 #ifdef WIN32_FILENAMES
|
|
|
942 if (drive || IS_DIRECTORY_SEP (nm[1]))
|
|
428
|
943 {
|
|
867
|
944 Ibyte *newnm;
|
|
771
|
945
|
|
657
|
946 if (IS_DIRECTORY_SEP (nm[1]))
|
|
|
947 {
|
|
771
|
948 newnm = mswindows_canonicalize_filename (nm);
|
|
|
949 if (qxestrcmp (newnm, XSTRING_DATA (name)) != 0)
|
|
|
950 name = build_intstring (newnm);
|
|
657
|
951 }
|
|
771
|
952 else
|
|
657
|
953 {
|
|
771
|
954 /* drive must be set, so this is okay */
|
|
|
955 newnm = mswindows_canonicalize_filename (nm - 2);
|
|
|
956 if (qxestrcmp (newnm, XSTRING_DATA (name)) != 0)
|
|
|
957 {
|
|
|
958 name = build_intstring (newnm);
|
|
|
959 XSTRING_DATA (name)[0] = DRIVE_LETTER (drive);
|
|
|
960 XSTRING_DATA (name)[1] = ':';
|
|
|
961 }
|
|
657
|
962 }
|
|
1726
|
963 xfree (newnm, Ibyte *);
|
|
2526
|
964 RETURN_UNGCPRO_EXIT_PROFILING (QSin_expand_file_name, name);
|
|
428
|
965 }
|
|
771
|
966 #endif /* WIN32_FILENAMES */
|
|
657
|
967 #ifndef WIN32_NATIVE
|
|
428
|
968 if (nm == XSTRING_DATA (name))
|
|
2526
|
969 RETURN_UNGCPRO_EXIT_PROFILING (QSin_expand_file_name, name);
|
|
|
970 RETURN_UNGCPRO_EXIT_PROFILING (QSin_expand_file_name,
|
|
|
971 build_intstring (nm));
|
|
442
|
972 #endif /* not WIN32_NATIVE */
|
|
428
|
973 }
|
|
|
974 }
|
|
|
975
|
|
|
976 /* At this point, nm might or might not be an absolute file name. We
|
|
|
977 need to expand ~ or ~user if present, otherwise prefix nm with
|
|
|
978 default_directory if nm is not absolute, and finally collapse /./
|
|
|
979 and /foo/../ sequences.
|
|
|
980
|
|
|
981 We set newdir to be the appropriate prefix if one is needed:
|
|
|
982 - the relevant user directory if nm starts with ~ or ~user
|
|
|
983 - the specified drive's working dir (DOS/NT only) if nm does not
|
|
|
984 start with /
|
|
|
985 - the value of default_directory.
|
|
|
986
|
|
|
987 Note that these prefixes are not guaranteed to be absolute (except
|
|
|
988 for the working dir of a drive). Therefore, to ensure we always
|
|
|
989 return an absolute name, if the final prefix is not absolute we
|
|
|
990 append it to the current working directory. */
|
|
|
991
|
|
|
992 newdir = 0;
|
|
|
993
|
|
|
994 if (nm[0] == '~') /* prefix ~ */
|
|
|
995 {
|
|
|
996 if (IS_DIRECTORY_SEP (nm[1])
|
|
|
997 || nm[1] == 0) /* ~ by itself */
|
|
|
998 {
|
|
867
|
999 Ibyte *homedir = get_home_directory ();
|
|
771
|
1000
|
|
|
1001 if (!homedir)
|
|
867
|
1002 newdir = (Ibyte *) "";
|
|
428
|
1003 else
|
|
771
|
1004 newdir = homedir;
|
|
428
|
1005
|
|
|
1006 nm++;
|
|
657
|
1007 #ifdef WIN32_FILENAMES
|
|
428
|
1008 collapse_newdir = 0;
|
|
|
1009 #endif
|
|
|
1010 }
|
|
|
1011 else /* ~user/filename */
|
|
|
1012 {
|
|
|
1013 for (p = nm; *p && (!IS_DIRECTORY_SEP (*p)); p++)
|
|
|
1014 DO_NOTHING;
|
|
2367
|
1015 o = alloca_ibytes (p - nm + 1);
|
|
771
|
1016 memcpy (o, nm, p - nm);
|
|
428
|
1017 o [p - nm] = 0;
|
|
|
1018
|
|
558
|
1019 /* #### While NT is single-user (for the moment) you still
|
|
|
1020 can have multiple user profiles users defined, each with
|
|
|
1021 its HOME. So maybe possibly we should think about handling
|
|
|
1022 ~user. --ben */
|
|
|
1023 #ifndef WIN32_NATIVE
|
|
442
|
1024 #ifdef CYGWIN
|
|
771
|
1025 {
|
|
867
|
1026 Ibyte *user;
|
|
771
|
1027
|
|
|
1028 if ((user = user_login_name (NULL)) != NULL)
|
|
|
1029 {
|
|
|
1030 /* Does the user login name match the ~name? */
|
|
|
1031 if (qxestrcmp (user, o + 1) == 0)
|
|
|
1032 {
|
|
|
1033 newdir = get_home_directory ();
|
|
|
1034 nm = p;
|
|
|
1035 }
|
|
|
1036 }
|
|
|
1037 }
|
|
|
1038 if (!newdir)
|
|
428
|
1039 {
|
|
442
|
1040 #endif /* CYGWIN */
|
|
428
|
1041 /* Jamie reports that getpwnam() can get wedged by SIGIO/SIGALARM
|
|
|
1042 occurring in it. (It can call select()). */
|
|
|
1043 slow_down_interrupts ();
|
|
771
|
1044 pw = (struct passwd *) qxe_getpwnam (o + 1);
|
|
428
|
1045 speed_up_interrupts ();
|
|
|
1046 if (pw)
|
|
|
1047 {
|
|
867
|
1048 newdir = (Ibyte *) pw->pw_dir;
|
|
428
|
1049 nm = p;
|
|
771
|
1050 /* FSF: if WIN32_NATIVE, collapse_newdir = 0;
|
|
|
1051 not possible here. */
|
|
428
|
1052 }
|
|
442
|
1053 #ifdef CYGWIN
|
|
428
|
1054 }
|
|
|
1055 #endif
|
|
442
|
1056 #endif /* not WIN32_NATIVE */
|
|
428
|
1057
|
|
|
1058 /* If we don't find a user of that name, leave the name
|
|
|
1059 unchanged; don't move nm forward to p. */
|
|
|
1060 }
|
|
|
1061 }
|
|
|
1062
|
|
657
|
1063 #ifdef WIN32_FILENAMES
|
|
428
|
1064 /* On DOS and Windows, nm is absolute if a drive name was specified;
|
|
|
1065 use the drive's current directory as the prefix if needed. */
|
|
|
1066 if (!newdir && drive)
|
|
|
1067 {
|
|
657
|
1068 #ifdef WIN32_NATIVE
|
|
428
|
1069 /* Get default directory if needed to make nm absolute. */
|
|
|
1070 if (!IS_DIRECTORY_SEP (nm[0]))
|
|
|
1071 {
|
|
867
|
1072 Ibyte *newcwd = mswindows_getdcwd (toupper (drive) - 'A' + 1);
|
|
771
|
1073 if (newcwd)
|
|
|
1074 {
|
|
867
|
1075 IBYTE_STRING_TO_ALLOCA (newcwd, newdir);
|
|
1726
|
1076 xfree (newcwd, Ibyte *);
|
|
771
|
1077 }
|
|
|
1078 else
|
|
428
|
1079 newdir = NULL;
|
|
|
1080 }
|
|
657
|
1081 #endif /* WIN32_NATIVE */
|
|
428
|
1082 if (!newdir)
|
|
|
1083 {
|
|
|
1084 /* Either nm starts with /, or drive isn't mounted. */
|
|
2367
|
1085 newdir = alloca_ibytes (4);
|
|
428
|
1086 newdir[0] = DRIVE_LETTER (drive);
|
|
|
1087 newdir[1] = ':';
|
|
|
1088 newdir[2] = '/';
|
|
|
1089 newdir[3] = 0;
|
|
|
1090 }
|
|
|
1091 }
|
|
657
|
1092 #endif /* WIN32_FILENAMES */
|
|
428
|
1093
|
|
|
1094 /* Finally, if no prefix has been specified and nm is not absolute,
|
|
|
1095 then it must be expanded relative to default_directory. */
|
|
|
1096
|
|
|
1097 if (1
|
|
442
|
1098 #ifndef WIN32_NATIVE
|
|
428
|
1099 /* /... alone is not absolute on DOS and Windows. */
|
|
|
1100 && !IS_DIRECTORY_SEP (nm[0])
|
|
657
|
1101 #endif
|
|
|
1102 #ifdef WIN32_FILENAMES
|
|
428
|
1103 && !(IS_DIRECTORY_SEP (nm[0]) && IS_DIRECTORY_SEP (nm[1]))
|
|
|
1104 #endif
|
|
|
1105 && !newdir)
|
|
|
1106 {
|
|
|
1107 newdir = XSTRING_DATA (default_directory);
|
|
771
|
1108 #ifdef WIN32_FILENAMES
|
|
|
1109 /* Note if special escape prefix is present, but remove for now. */
|
|
|
1110 if (newdir[0] == '/' && newdir[1] == ':')
|
|
|
1111 {
|
|
|
1112 is_escaped = 1;
|
|
|
1113 newdir += 2;
|
|
|
1114 }
|
|
|
1115 #endif
|
|
428
|
1116 }
|
|
|
1117
|
|
657
|
1118 #ifdef WIN32_FILENAMES
|
|
428
|
1119 if (newdir)
|
|
|
1120 {
|
|
|
1121 /* First ensure newdir is an absolute name. */
|
|
|
1122 if (
|
|
442
|
1123 /* Detect Windows file names with drive specifiers. */
|
|
428
|
1124 ! (IS_DRIVE (newdir[0])
|
|
|
1125 && IS_DEVICE_SEP (newdir[1]) && IS_DIRECTORY_SEP (newdir[2]))
|
|
|
1126 /* Detect Windows file names in UNC format. */
|
|
|
1127 && ! (IS_DIRECTORY_SEP (newdir[0]) && IS_DIRECTORY_SEP (newdir[1]))
|
|
771
|
1128 /* XEmacs: added these two lines: Detect drive spec by itself */
|
|
428
|
1129 && ! (IS_DEVICE_SEP (newdir[1]) && newdir[2] == 0)
|
|
657
|
1130 /* Detect unix format. */
|
|
|
1131 #ifndef WIN32_NATIVE
|
|
|
1132 && ! (IS_DIRECTORY_SEP (newdir[0]))
|
|
|
1133 #endif
|
|
428
|
1134 )
|
|
|
1135 {
|
|
|
1136 /* Effectively, let newdir be (expand-file-name newdir cwd).
|
|
|
1137 Because of the admonition against calling expand-file-name
|
|
|
1138 when we have pointers into lisp strings, we accomplish this
|
|
|
1139 indirectly by prepending newdir to nm if necessary, and using
|
|
|
1140 cwd (or the wd of newdir's drive) as the new newdir. */
|
|
|
1141
|
|
|
1142 if (IS_DRIVE (newdir[0]) && newdir[1] == ':')
|
|
|
1143 {
|
|
|
1144 drive = newdir[0];
|
|
|
1145 newdir += 2;
|
|
|
1146 }
|
|
|
1147 if (!IS_DIRECTORY_SEP (nm[0]))
|
|
|
1148 {
|
|
2367
|
1149 Ibyte *tmp = alloca_ibytes (qxestrlen (newdir) +
|
|
|
1150 qxestrlen (nm) + 2);
|
|
771
|
1151 file_name_as_directory (tmp, newdir);
|
|
|
1152 qxestrcat (tmp, nm);
|
|
428
|
1153 nm = tmp;
|
|
|
1154 }
|
|
|
1155 if (drive)
|
|
|
1156 {
|
|
657
|
1157 #ifdef WIN32_NATIVE
|
|
867
|
1158 Ibyte *newcwd = mswindows_getdcwd (toupper (drive) - 'A' + 1);
|
|
771
|
1159 if (newcwd)
|
|
|
1160 {
|
|
867
|
1161 IBYTE_STRING_TO_ALLOCA (newcwd, newdir);
|
|
1726
|
1162 xfree (newcwd, Ibyte *);
|
|
771
|
1163 }
|
|
|
1164 else
|
|
657
|
1165 #endif
|
|
867
|
1166 IBYTE_STRING_TO_ALLOCA ((Ibyte *) "/", newdir);
|
|
428
|
1167 }
|
|
|
1168 else
|
|
867
|
1169 IBYTE_STRING_TO_ALLOCA (get_initial_directory (0, 0), newdir);
|
|
428
|
1170 }
|
|
|
1171
|
|
|
1172 /* Strip off drive name from prefix, if present. */
|
|
|
1173 if (IS_DRIVE (newdir[0]) && newdir[1] == ':')
|
|
|
1174 {
|
|
|
1175 drive = newdir[0];
|
|
|
1176 newdir += 2;
|
|
|
1177 }
|
|
|
1178
|
|
|
1179 /* Keep only a prefix from newdir if nm starts with slash
|
|
771
|
1180 (//server/share for UNC, nothing otherwise). */
|
|
657
|
1181 if (IS_DIRECTORY_SEP (nm[0])
|
|
|
1182 #ifndef WIN32_NATIVE
|
|
|
1183 && IS_DIRECTORY_SEP (nm[1])
|
|
|
1184 #endif
|
|
|
1185 && collapse_newdir)
|
|
428
|
1186 {
|
|
|
1187 if (IS_DIRECTORY_SEP (newdir[0]) && IS_DIRECTORY_SEP (newdir[1]))
|
|
|
1188 {
|
|
2367
|
1189 /* !!#### Use ei API */
|
|
|
1190 newdir = qxestrcpy (alloca_ibytes (qxestrlen (newdir) + 1),
|
|
|
1191 newdir);
|
|
428
|
1192 p = newdir + 2;
|
|
|
1193 while (*p && !IS_DIRECTORY_SEP (*p)) p++;
|
|
|
1194 p++;
|
|
|
1195 while (*p && !IS_DIRECTORY_SEP (*p)) p++;
|
|
|
1196 *p = 0;
|
|
|
1197 }
|
|
|
1198 else
|
|
867
|
1199 newdir = (Ibyte *) "";
|
|
428
|
1200 }
|
|
|
1201 }
|
|
657
|
1202 #endif /* WIN32_FILENAMES */
|
|
428
|
1203
|
|
|
1204 if (newdir)
|
|
|
1205 {
|
|
|
1206 /* Get rid of any slash at the end of newdir, unless newdir is
|
|
771
|
1207 just / or // (an incomplete UNC name). */
|
|
|
1208 length = qxestrlen (newdir);
|
|
428
|
1209 if (length > 1 && IS_DIRECTORY_SEP (newdir[length - 1])
|
|
657
|
1210 #ifdef WIN32_FILENAMES
|
|
428
|
1211 && !(length == 2 && IS_DIRECTORY_SEP (newdir[0]))
|
|
|
1212 #endif
|
|
|
1213 )
|
|
|
1214 {
|
|
2367
|
1215 Ibyte *temp = alloca_ibytes (length);
|
|
428
|
1216 memcpy (temp, newdir, length - 1);
|
|
|
1217 temp[length - 1] = 0;
|
|
|
1218 newdir = temp;
|
|
|
1219 }
|
|
|
1220 tlen = length + 1;
|
|
|
1221 }
|
|
|
1222 else
|
|
|
1223 tlen = 0;
|
|
|
1224
|
|
|
1225 /* Now concatenate the directory and name to new space in the stack frame */
|
|
771
|
1226 tlen += qxestrlen (nm) + 1;
|
|
657
|
1227 #ifdef WIN32_FILENAMES
|
|
771
|
1228 /* Reserve space for drive specifier and escape prefix, since either
|
|
|
1229 or both may need to be inserted. (The Microsoft x86 compiler
|
|
428
|
1230 produces incorrect code if the following two lines are combined.) */
|
|
2367
|
1231 target = alloca_ibytes (tlen + 4);
|
|
771
|
1232 target += 4;
|
|
657
|
1233 #else /* not WIN32_FILENAMES */
|
|
2367
|
1234 target = alloca_ibytes (tlen);
|
|
657
|
1235 #endif /* not WIN32_FILENAMES */
|
|
428
|
1236 *target = 0;
|
|
|
1237
|
|
|
1238 if (newdir)
|
|
|
1239 {
|
|
|
1240 if (nm[0] == 0 || IS_DIRECTORY_SEP (nm[0]))
|
|
771
|
1241 {
|
|
|
1242 #ifdef WIN32_FILENAMES
|
|
|
1243 /* If newdir is effectively "C:/", then the drive letter will have
|
|
|
1244 been stripped and newdir will be "/". Concatenating with an
|
|
|
1245 absolute directory in nm produces "//", which will then be
|
|
|
1246 incorrectly treated as a network share. Ignore newdir in
|
|
|
1247 this case (keeping the drive letter). */
|
|
|
1248 if (!(drive && nm[0] && IS_DIRECTORY_SEP (newdir[0])
|
|
|
1249 && newdir[1] == '\0'))
|
|
|
1250 #endif
|
|
|
1251 qxestrcpy (target, newdir);
|
|
|
1252 }
|
|
428
|
1253 else
|
|
771
|
1254 file_name_as_directory (target, newdir);
|
|
428
|
1255 }
|
|
|
1256
|
|
771
|
1257 qxestrcat (target, nm);
|
|
428
|
1258
|
|
|
1259 /* ASSERT (IS_DIRECTORY_SEP (target[0])) if not VMS */
|
|
|
1260
|
|
771
|
1261 /* Now canonicalize by removing `//', `/.' and `/foo/..' if they
|
|
|
1262 appear. */
|
|
428
|
1263
|
|
|
1264 p = target;
|
|
|
1265 o = target;
|
|
|
1266
|
|
|
1267 while (*p)
|
|
|
1268 {
|
|
|
1269 if (!IS_DIRECTORY_SEP (*p))
|
|
|
1270 {
|
|
|
1271 *o++ = *p++;
|
|
|
1272 }
|
|
|
1273 else if (IS_DIRECTORY_SEP (p[0])
|
|
|
1274 && p[1] == '.'
|
|
|
1275 && (IS_DIRECTORY_SEP (p[2])
|
|
|
1276 || p[2] == 0))
|
|
|
1277 {
|
|
|
1278 /* If "/." is the entire filename, keep the "/". Otherwise,
|
|
|
1279 just delete the whole "/.". */
|
|
|
1280 if (o == target && p[2] == '\0')
|
|
|
1281 *o++ = *p;
|
|
|
1282 p += 2;
|
|
|
1283 }
|
|
|
1284 else if (IS_DIRECTORY_SEP (p[0]) && p[1] == '.' && p[2] == '.'
|
|
|
1285 /* `/../' is the "superroot" on certain file systems. */
|
|
|
1286 && o != target
|
|
|
1287 && (IS_DIRECTORY_SEP (p[3]) || p[3] == 0))
|
|
|
1288 {
|
|
|
1289 while (o != target && (--o) && !IS_DIRECTORY_SEP (*o))
|
|
|
1290 ;
|
|
|
1291 /* Keep initial / only if this is the whole name. */
|
|
|
1292 if (o == target && IS_ANY_SEP (*o) && p[3] == 0)
|
|
|
1293 ++o;
|
|
|
1294 p += 3;
|
|
|
1295 }
|
|
771
|
1296 else if (p > target
|
|
|
1297 && IS_DIRECTORY_SEP (p[0]) && IS_DIRECTORY_SEP (p[1]))
|
|
|
1298 {
|
|
|
1299 /* Collapse multiple `/' in a row. */
|
|
|
1300 *o++ = *p++;
|
|
|
1301 while (IS_DIRECTORY_SEP (*p))
|
|
|
1302 ++p;
|
|
|
1303 }
|
|
428
|
1304 else
|
|
|
1305 {
|
|
|
1306 *o++ = *p++;
|
|
|
1307 }
|
|
|
1308 }
|
|
|
1309
|
|
657
|
1310 #ifdef WIN32_FILENAMES
|
|
428
|
1311 /* At last, set drive name, except for network file name. */
|
|
|
1312 if (drive)
|
|
|
1313 {
|
|
|
1314 target -= 2;
|
|
|
1315 target[0] = DRIVE_LETTER (drive);
|
|
|
1316 target[1] = ':';
|
|
|
1317 }
|
|
657
|
1318 #ifdef WIN32_NATIVE
|
|
428
|
1319 else
|
|
|
1320 {
|
|
|
1321 assert (IS_DIRECTORY_SEP (target[0]) && IS_DIRECTORY_SEP (target[1]));
|
|
|
1322 }
|
|
657
|
1323 #endif
|
|
771
|
1324 /* Reinsert the escape prefix if required. */
|
|
|
1325 if (is_escaped)
|
|
|
1326 {
|
|
|
1327 target -= 2;
|
|
|
1328 target[0] = '/';
|
|
|
1329 target[1] = ':';
|
|
|
1330 }
|
|
|
1331
|
|
|
1332 *o = '\0';
|
|
|
1333
|
|
|
1334 {
|
|
867
|
1335 Ibyte *newtarget = mswindows_canonicalize_filename (target);
|
|
771
|
1336 Lisp_Object result = build_intstring (newtarget);
|
|
1726
|
1337 xfree (newtarget, Ibyte *);
|
|
771
|
1338
|
|
2526
|
1339 RETURN_UNGCPRO_EXIT_PROFILING (QSin_expand_file_name, result);
|
|
771
|
1340 }
|
|
|
1341 #else /* not WIN32_FILENAMES */
|
|
2526
|
1342 RETURN_UNGCPRO_EXIT_PROFILING (QSin_expand_file_name,
|
|
|
1343 make_string (target, o - target));
|
|
771
|
1344 #endif /* not WIN32_FILENAMES */
|
|
428
|
1345 }
|
|
|
1346
|
|
|
1347 DEFUN ("file-truename", Ffile_truename, 1, 2, 0, /*
|
|
444
|
1348 Return the canonical name of FILENAME.
|
|
|
1349 Second arg DEFAULT is directory to start with if FILENAME is relative
|
|
428
|
1350 (does not start with slash); if DEFAULT is nil or missing,
|
|
444
|
1351 the current buffer's value of `default-directory' is used.
|
|
428
|
1352 No component of the resulting pathname will be a symbolic link, as
|
|
|
1353 in the realpath() function.
|
|
|
1354 */
|
|
|
1355 (filename, default_))
|
|
|
1356 {
|
|
442
|
1357 /* This function can GC. GC checked 2000-07-28 ben. */
|
|
428
|
1358 Lisp_Object expanded_name;
|
|
|
1359 struct gcpro gcpro1;
|
|
|
1360
|
|
|
1361 CHECK_STRING (filename);
|
|
|
1362
|
|
|
1363 expanded_name = Fexpand_file_name (filename, default_);
|
|
|
1364
|
|
|
1365 if (!STRINGP (expanded_name))
|
|
|
1366 return Qnil;
|
|
|
1367
|
|
|
1368 GCPRO1 (expanded_name);
|
|
442
|
1369
|
|
|
1370 {
|
|
|
1371 Lisp_Object handler =
|
|
|
1372 Ffind_file_name_handler (expanded_name, Qfile_truename);
|
|
|
1373
|
|
|
1374 if (!NILP (handler))
|
|
|
1375 RETURN_UNGCPRO
|
|
|
1376 (call2_check_string (handler, Qfile_truename, expanded_name));
|
|
|
1377 }
|
|
428
|
1378
|
|
|
1379 {
|
|
2421
|
1380 Ibyte resolved_path[PATH_MAX_INTERNAL];
|
|
771
|
1381 Bytecount elen = XSTRING_LENGTH (expanded_name);
|
|
867
|
1382 Ibyte *path;
|
|
|
1383 Ibyte *p;
|
|
771
|
1384
|
|
|
1385 LISP_STRING_TO_ALLOCA (expanded_name, path);
|
|
988
|
1386
|
|
1111
|
1387 #if defined (WIN32_FILENAMES) && defined (CYGWIN)
|
|
988
|
1388 /* When using win32 filenames in cygwin we want file-truename to
|
|
|
1389 detect that c:/windows == /windows for example. */
|
|
1111
|
1390 if (! (IS_DIRECTORY_SEP (path[0]) && IS_DIRECTORY_SEP (path[1])))
|
|
|
1391 {
|
|
|
1392 LOCAL_TO_WIN32_FILE_FORMAT (path, p);
|
|
|
1393 path = p;
|
|
|
1394 }
|
|
988
|
1395 #endif
|
|
428
|
1396 p = path;
|
|
442
|
1397
|
|
428
|
1398 /* Try doing it all at once. */
|
|
2526
|
1399 if (!qxe_realpath (path, resolved_path, 0))
|
|
428
|
1400 {
|
|
|
1401 /* Didn't resolve it -- have to do it one component at a time. */
|
|
|
1402 /* "realpath" is a typically useless, stupid un*x piece of crap.
|
|
|
1403 It claims to return a useful value in the "error" case, but since
|
|
|
1404 there is no indication provided of how far along the pathname
|
|
|
1405 the function went before erring, there is no way to use the
|
|
442
|
1406 partial result returned. What a piece of junk.
|
|
|
1407
|
|
|
1408 The above comment refers to historical versions of
|
|
|
1409 realpath(). The Unix98 specs state:
|
|
|
1410
|
|
|
1411 "On successful completion, realpath() returns a
|
|
|
1412 pointer to the resolved name. Otherwise, realpath()
|
|
|
1413 returns a null pointer and sets errno to indicate the
|
|
|
1414 error, and the contents of the buffer pointed to by
|
|
|
1415 resolved_name are undefined."
|
|
|
1416
|
|
771
|
1417 Since we depend on undocumented semantics of various system
|
|
2526
|
1418 realpath()s, we just use our own version in realpath.c.
|
|
|
1419
|
|
|
1420 Note also that our own version differs in its semantics from any
|
|
|
1421 standard version, since it accepts and returns internal-format
|
|
|
1422 text, not external-format. */
|
|
428
|
1423 for (;;)
|
|
|
1424 {
|
|
867
|
1425 Ibyte *pos;
|
|
446
|
1426
|
|
657
|
1427 #ifdef WIN32_FILENAMES
|
|
446
|
1428 if (IS_DRIVE (p[0]) && IS_DEVICE_SEP (p[1])
|
|
|
1429 && IS_DIRECTORY_SEP (p[2]))
|
|
|
1430 /* don't test c: on windows */
|
|
|
1431 p = p+2;
|
|
|
1432 else if (IS_DIRECTORY_SEP (p[0]) && IS_DIRECTORY_SEP (p[1]))
|
|
|
1433 /* start after // */
|
|
|
1434 p = p+1;
|
|
|
1435 #endif
|
|
|
1436 for (pos = p + 1; pos < path + elen; pos++)
|
|
|
1437 if (IS_DIRECTORY_SEP (*pos))
|
|
|
1438 {
|
|
|
1439 *(p = pos) = 0;
|
|
|
1440 break;
|
|
|
1441 }
|
|
|
1442 if (p != pos)
|
|
|
1443 p = 0;
|
|
428
|
1444
|
|
2526
|
1445 if (qxe_realpath (path, resolved_path, 0))
|
|
428
|
1446 {
|
|
|
1447 if (p)
|
|
446
|
1448 *p = DIRECTORY_SEP;
|
|
428
|
1449 else
|
|
|
1450 break;
|
|
|
1451
|
|
|
1452 }
|
|
|
1453 else if (errno == ENOENT || errno == EACCES)
|
|
|
1454 {
|
|
|
1455 /* Failed on this component. Just tack on the rest of
|
|
|
1456 the string and we are done. */
|
|
771
|
1457 int rlen = qxestrlen (resolved_path);
|
|
428
|
1458
|
|
|
1459 /* "On failure, it returns NULL, sets errno to indicate
|
|
|
1460 the error, and places in resolved_path the absolute pathname
|
|
|
1461 of the path component which could not be resolved." */
|
|
442
|
1462
|
|
|
1463 if (p)
|
|
428
|
1464 {
|
|
|
1465 int plen = elen - (p - path);
|
|
|
1466
|
|
446
|
1467 if (rlen > 1 && IS_DIRECTORY_SEP (resolved_path[rlen - 1]))
|
|
428
|
1468 rlen = rlen - 1;
|
|
|
1469
|
|
|
1470 if (plen + rlen + 1 > countof (resolved_path))
|
|
|
1471 goto toolong;
|
|
|
1472
|
|
446
|
1473 resolved_path[rlen] = DIRECTORY_SEP;
|
|
428
|
1474 memcpy (resolved_path + rlen + 1, p + 1, plen + 1 - 1);
|
|
|
1475 }
|
|
|
1476 break;
|
|
|
1477 }
|
|
|
1478 else
|
|
|
1479 goto lose;
|
|
|
1480 }
|
|
|
1481 }
|
|
|
1482
|
|
|
1483 {
|
|
442
|
1484 Lisp_Object resolved_name;
|
|
771
|
1485 int rlen = qxestrlen (resolved_path);
|
|
826
|
1486 if (elen > 0 && IS_DIRECTORY_SEP (string_byte (expanded_name, elen - 1))
|
|
446
|
1487 && !(rlen > 0 && IS_DIRECTORY_SEP (resolved_path[rlen - 1])))
|
|
428
|
1488 {
|
|
|
1489 if (rlen + 1 > countof (resolved_path))
|
|
|
1490 goto toolong;
|
|
446
|
1491 resolved_path[rlen++] = DIRECTORY_SEP;
|
|
442
|
1492 resolved_path[rlen] = '\0';
|
|
428
|
1493 }
|
|
771
|
1494 resolved_name = make_string (resolved_path, rlen);
|
|
442
|
1495 RETURN_UNGCPRO (resolved_name);
|
|
428
|
1496 }
|
|
|
1497
|
|
|
1498 toolong:
|
|
|
1499 errno = ENAMETOOLONG;
|
|
|
1500 goto lose;
|
|
|
1501 lose:
|
|
563
|
1502 report_file_error ("Finding truename", expanded_name);
|
|
428
|
1503 }
|
|
442
|
1504 RETURN_UNGCPRO (Qnil);
|
|
428
|
1505 }
|
|
|
1506
|
|
|
1507
|
|
|
1508 DEFUN ("substitute-in-file-name", Fsubstitute_in_file_name, 1, 1, 0, /*
|
|
|
1509 Substitute environment variables referred to in FILENAME.
|
|
|
1510 `$FOO' where FOO is an environment variable name means to substitute
|
|
|
1511 the value of that variable. The variable name should be terminated
|
|
444
|
1512 with a character, not a letter, digit or underscore; otherwise, enclose
|
|
428
|
1513 the entire variable name in braces.
|
|
|
1514 If `/~' appears, all of FILENAME through that `/' is discarded.
|
|
|
1515 */
|
|
444
|
1516 (filename))
|
|
428
|
1517 {
|
|
442
|
1518 /* This function can GC. GC checked 2000-07-28 ben. */
|
|
867
|
1519 Ibyte *nm;
|
|
|
1520
|
|
|
1521 Ibyte *s, *p, *o, *x, *endp;
|
|
|
1522 Ibyte *target = 0;
|
|
428
|
1523 int total = 0;
|
|
|
1524 int substituted = 0;
|
|
867
|
1525 Ibyte *xnm;
|
|
428
|
1526 Lisp_Object handler;
|
|
|
1527
|
|
444
|
1528 CHECK_STRING (filename);
|
|
428
|
1529
|
|
|
1530 /* If the file name has special constructs in it,
|
|
|
1531 call the corresponding file handler. */
|
|
444
|
1532 handler = Ffind_file_name_handler (filename, Qsubstitute_in_file_name);
|
|
428
|
1533 if (!NILP (handler))
|
|
|
1534 return call2_check_string_or_nil (handler, Qsubstitute_in_file_name,
|
|
444
|
1535 filename);
|
|
|
1536
|
|
|
1537 nm = XSTRING_DATA (filename);
|
|
|
1538 endp = nm + XSTRING_LENGTH (filename);
|
|
428
|
1539
|
|
|
1540 /* If /~ or // appears, discard everything through first slash. */
|
|
|
1541
|
|
|
1542 for (p = nm; p != endp; p++)
|
|
|
1543 {
|
|
|
1544 if ((p[0] == '~'
|
|
657
|
1545 #if defined (WIN32_FILENAMES)
|
|
440
|
1546 /* // at start of file name is meaningful in WindowsNT systems */
|
|
428
|
1547 || (IS_DIRECTORY_SEP (p[0]) && p - 1 != nm)
|
|
657
|
1548 #else /* not (WIN32_FILENAMES) */
|
|
428
|
1549 || IS_DIRECTORY_SEP (p[0])
|
|
657
|
1550 #endif /* not (WIN32_FILENAMES) */
|
|
428
|
1551 )
|
|
|
1552 && p != nm
|
|
|
1553 && (IS_DIRECTORY_SEP (p[-1])))
|
|
|
1554 {
|
|
|
1555 nm = p;
|
|
|
1556 substituted = 1;
|
|
|
1557 }
|
|
657
|
1558 #ifdef WIN32_FILENAMES
|
|
428
|
1559 /* see comment in expand-file-name about drive specifiers */
|
|
|
1560 else if (IS_DRIVE (p[0]) && p[1] == ':'
|
|
|
1561 && p > nm && IS_DIRECTORY_SEP (p[-1]))
|
|
|
1562 {
|
|
|
1563 nm = p;
|
|
|
1564 substituted = 1;
|
|
|
1565 }
|
|
657
|
1566 #endif /* WIN32_FILENAMES */
|
|
428
|
1567 }
|
|
|
1568
|
|
|
1569 /* See if any variables are substituted into the string
|
|
|
1570 and find the total length of their values in `total' */
|
|
|
1571
|
|
|
1572 for (p = nm; p != endp;)
|
|
|
1573 if (*p != '$')
|
|
|
1574 p++;
|
|
|
1575 else
|
|
|
1576 {
|
|
|
1577 p++;
|
|
|
1578 if (p == endp)
|
|
|
1579 goto badsubst;
|
|
|
1580 else if (*p == '$')
|
|
|
1581 {
|
|
|
1582 /* "$$" means a single "$" */
|
|
|
1583 p++;
|
|
|
1584 total -= 1;
|
|
|
1585 substituted = 1;
|
|
|
1586 continue;
|
|
|
1587 }
|
|
|
1588 else if (*p == '{')
|
|
|
1589 {
|
|
|
1590 o = ++p;
|
|
|
1591 while (p != endp && *p != '}') p++;
|
|
|
1592 if (*p != '}') goto missingclose;
|
|
|
1593 s = p;
|
|
|
1594 }
|
|
|
1595 else
|
|
|
1596 {
|
|
|
1597 o = p;
|
|
|
1598 while (p != endp && (isalnum (*p) || *p == '_')) p++;
|
|
|
1599 s = p;
|
|
|
1600 }
|
|
|
1601
|
|
|
1602 /* Copy out the variable name */
|
|
2367
|
1603 target = alloca_ibytes (s - o + 1);
|
|
771
|
1604 qxestrncpy (target, o, s - o);
|
|
428
|
1605 target[s - o] = 0;
|
|
442
|
1606 #ifdef WIN32_NATIVE
|
|
1204
|
1607 qxestrupr (target); /* $home == $HOME etc. */
|
|
442
|
1608 #endif /* WIN32_NATIVE */
|
|
428
|
1609
|
|
|
1610 /* Get variable value */
|
|
867
|
1611 o = egetenv ((CIbyte *) target);
|
|
428
|
1612 if (!o) goto badvar;
|
|
771
|
1613 total += qxestrlen (o);
|
|
428
|
1614 substituted = 1;
|
|
|
1615 }
|
|
|
1616
|
|
|
1617 if (!substituted)
|
|
444
|
1618 return filename;
|
|
|
1619
|
|
|
1620 /* If substitution required, recopy the filename and do it */
|
|
428
|
1621 /* Make space in stack frame for the new copy */
|
|
2367
|
1622 xnm = alloca_ibytes (XSTRING_LENGTH (filename) + total + 1);
|
|
428
|
1623 x = xnm;
|
|
|
1624
|
|
|
1625 /* Copy the rest of the name through, replacing $ constructs with values */
|
|
|
1626 for (p = nm; *p;)
|
|
|
1627 if (*p != '$')
|
|
|
1628 *x++ = *p++;
|
|
|
1629 else
|
|
|
1630 {
|
|
|
1631 p++;
|
|
|
1632 if (p == endp)
|
|
|
1633 goto badsubst;
|
|
|
1634 else if (*p == '$')
|
|
|
1635 {
|
|
|
1636 *x++ = *p++;
|
|
|
1637 continue;
|
|
|
1638 }
|
|
|
1639 else if (*p == '{')
|
|
|
1640 {
|
|
|
1641 o = ++p;
|
|
|
1642 while (p != endp && *p != '}') p++;
|
|
|
1643 if (*p != '}') goto missingclose;
|
|
|
1644 s = p++;
|
|
|
1645 }
|
|
|
1646 else
|
|
|
1647 {
|
|
|
1648 o = p;
|
|
|
1649 while (p != endp && (isalnum (*p) || *p == '_')) p++;
|
|
|
1650 s = p;
|
|
|
1651 }
|
|
|
1652
|
|
|
1653 /* Copy out the variable name */
|
|
2367
|
1654 target = alloca_ibytes (s - o + 1);
|
|
771
|
1655 qxestrncpy (target, o, s - o);
|
|
428
|
1656 target[s - o] = 0;
|
|
442
|
1657 #ifdef WIN32_NATIVE
|
|
1204
|
1658 qxestrupr (target); /* $home == $HOME etc. */
|
|
442
|
1659 #endif /* WIN32_NATIVE */
|
|
428
|
1660
|
|
|
1661 /* Get variable value */
|
|
867
|
1662 o = egetenv ((CIbyte *) target);
|
|
428
|
1663 if (!o)
|
|
|
1664 goto badvar;
|
|
|
1665
|
|
771
|
1666 qxestrcpy (x, o);
|
|
|
1667 x += qxestrlen (o);
|
|
428
|
1668 }
|
|
|
1669
|
|
|
1670 *x = 0;
|
|
|
1671
|
|
|
1672 /* If /~ or // appears, discard everything through first slash. */
|
|
|
1673
|
|
|
1674 for (p = xnm; p != x; p++)
|
|
|
1675 if ((p[0] == '~'
|
|
657
|
1676 #if defined (WIN32_FILENAMES)
|
|
428
|
1677 || (IS_DIRECTORY_SEP (p[0]) && p - 1 != xnm)
|
|
657
|
1678 #else /* not WIN32_FILENAMES */
|
|
428
|
1679 || IS_DIRECTORY_SEP (p[0])
|
|
657
|
1680 #endif /* not WIN32_FILENAMES */
|
|
428
|
1681 )
|
|
|
1682 /* don't do p[-1] if that would go off the beginning --jwz */
|
|
|
1683 && p != nm && p > xnm && IS_DIRECTORY_SEP (p[-1]))
|
|
|
1684 xnm = p;
|
|
657
|
1685 #ifdef WIN32_FILENAMES
|
|
428
|
1686 else if (IS_DRIVE (p[0]) && p[1] == ':'
|
|
|
1687 && p > nm && IS_DIRECTORY_SEP (p[-1]))
|
|
|
1688 xnm = p;
|
|
|
1689 #endif
|
|
|
1690
|
|
|
1691 return make_string (xnm, x - xnm);
|
|
|
1692
|
|
|
1693 badsubst:
|
|
444
|
1694 syntax_error ("Bad format environment-variable substitution", filename);
|
|
428
|
1695 missingclose:
|
|
442
|
1696 syntax_error ("Missing \"}\" in environment-variable substitution",
|
|
444
|
1697 filename);
|
|
428
|
1698 badvar:
|
|
442
|
1699 syntax_error_2 ("Substituting nonexistent environment variable",
|
|
771
|
1700 filename, build_intstring (target));
|
|
428
|
1701
|
|
1204
|
1702 RETURN_NOT_REACHED (Qnil);
|
|
428
|
1703 }
|
|
|
1704
|
|
|
1705 /* A slightly faster and more convenient way to get
|
|
|
1706 (directory-file-name (expand-file-name FOO)). */
|
|
|
1707
|
|
|
1708 Lisp_Object
|
|
|
1709 expand_and_dir_to_file (Lisp_Object filename, Lisp_Object defdir)
|
|
|
1710 {
|
|
442
|
1711 /* This function can call Lisp. GC checked 2000-07-28 ben */
|
|
428
|
1712 Lisp_Object abspath;
|
|
|
1713 struct gcpro gcpro1;
|
|
|
1714
|
|
|
1715 abspath = Fexpand_file_name (filename, defdir);
|
|
|
1716 GCPRO1 (abspath);
|
|
|
1717 /* Remove final slash, if any (unless path is root).
|
|
|
1718 stat behaves differently depending! */
|
|
|
1719 if (XSTRING_LENGTH (abspath) > 1
|
|
826
|
1720 && IS_DIRECTORY_SEP (string_byte (abspath, XSTRING_LENGTH (abspath) - 1))
|
|
|
1721 && !IS_DEVICE_SEP (string_byte (abspath, XSTRING_LENGTH (abspath) - 2)))
|
|
428
|
1722 /* We cannot take shortcuts; they might be wrong for magic file names. */
|
|
|
1723 abspath = Fdirectory_file_name (abspath);
|
|
|
1724 UNGCPRO;
|
|
|
1725 return abspath;
|
|
|
1726 }
|
|
|
1727
|
|
|
1728 /* Signal an error if the file ABSNAME already exists.
|
|
|
1729 If INTERACTIVE is nonzero, ask the user whether to proceed,
|
|
|
1730 and bypass the error if the user says to go ahead.
|
|
|
1731 QUERYSTRING is a name for the action that is being considered
|
|
|
1732 to alter the file.
|
|
|
1733 *STATPTR is used to store the stat information if the file exists.
|
|
|
1734 If the file does not exist, STATPTR->st_mode is set to 0. */
|
|
|
1735
|
|
|
1736 static void
|
|
1333
|
1737 barf_or_query_if_file_exists (Lisp_Object absname, const CIbyte *querystring,
|
|
428
|
1738 int interactive, struct stat *statptr)
|
|
|
1739 {
|
|
442
|
1740 /* This function can call Lisp. GC checked 2000-07-28 ben */
|
|
428
|
1741 struct stat statbuf;
|
|
|
1742
|
|
|
1743 /* stat is a good way to tell whether the file exists,
|
|
|
1744 regardless of what access permissions it has. */
|
|
771
|
1745 if (qxe_stat (XSTRING_DATA (absname), &statbuf) >= 0)
|
|
428
|
1746 {
|
|
|
1747 Lisp_Object tem;
|
|
|
1748
|
|
|
1749 if (interactive)
|
|
|
1750 {
|
|
|
1751 Lisp_Object prompt;
|
|
|
1752 struct gcpro gcpro1;
|
|
|
1753
|
|
771
|
1754 prompt =
|
|
|
1755 emacs_sprintf_string
|
|
|
1756 (CGETTEXT ("File %s already exists; %s anyway? "),
|
|
|
1757 XSTRING_DATA (absname), CGETTEXT (querystring));
|
|
428
|
1758
|
|
|
1759 GCPRO1 (prompt);
|
|
|
1760 tem = call1 (Qyes_or_no_p, prompt);
|
|
|
1761 UNGCPRO;
|
|
|
1762 }
|
|
|
1763 else
|
|
|
1764 tem = Qnil;
|
|
|
1765
|
|
|
1766 if (NILP (tem))
|
|
|
1767 Fsignal (Qfile_already_exists,
|
|
771
|
1768 list2 (build_msg_string ("File already exists"),
|
|
428
|
1769 absname));
|
|
|
1770 if (statptr)
|
|
|
1771 *statptr = statbuf;
|
|
|
1772 }
|
|
|
1773 else
|
|
|
1774 {
|
|
|
1775 if (statptr)
|
|
|
1776 statptr->st_mode = 0;
|
|
|
1777 }
|
|
|
1778 return;
|
|
|
1779 }
|
|
|
1780
|
|
|
1781 DEFUN ("copy-file", Fcopy_file, 2, 4,
|
|
|
1782 "fCopy file: \nFCopy %s to file: \np\nP", /*
|
|
444
|
1783 Copy FILENAME to NEWNAME. Both args must be strings.
|
|
428
|
1784 Signals a `file-already-exists' error if file NEWNAME already exists,
|
|
|
1785 unless a third argument OK-IF-ALREADY-EXISTS is supplied and non-nil.
|
|
|
1786 A number as third arg means request confirmation if NEWNAME already exists.
|
|
|
1787 This is what happens in interactive use with M-x.
|
|
|
1788 Fourth arg KEEP-TIME non-nil means give the new file the same
|
|
|
1789 last-modified time as the old one. (This works on only some systems.)
|
|
|
1790 A prefix arg makes KEEP-TIME non-nil.
|
|
|
1791 */
|
|
|
1792 (filename, newname, ok_if_already_exists, keep_time))
|
|
|
1793 {
|
|
442
|
1794 /* This function can call Lisp. GC checked 2000-07-28 ben */
|
|
428
|
1795 int ifd, ofd, n;
|
|
|
1796 char buf[16 * 1024];
|
|
|
1797 struct stat st, out_st;
|
|
|
1798 Lisp_Object handler;
|
|
|
1799 int speccount = specpdl_depth ();
|
|
|
1800 struct gcpro gcpro1, gcpro2;
|
|
|
1801 /* Lisp_Object args[6]; */
|
|
|
1802 int input_file_statable_p;
|
|
|
1803
|
|
|
1804 GCPRO2 (filename, newname);
|
|
|
1805 CHECK_STRING (filename);
|
|
|
1806 CHECK_STRING (newname);
|
|
|
1807 filename = Fexpand_file_name (filename, Qnil);
|
|
|
1808 newname = Fexpand_file_name (newname, Qnil);
|
|
|
1809
|
|
|
1810 /* If the input file name has special constructs in it,
|
|
|
1811 call the corresponding file handler. */
|
|
|
1812 handler = Ffind_file_name_handler (filename, Qcopy_file);
|
|
|
1813 /* Likewise for output file name. */
|
|
|
1814 if (NILP (handler))
|
|
|
1815 handler = Ffind_file_name_handler (newname, Qcopy_file);
|
|
|
1816 if (!NILP (handler))
|
|
|
1817 {
|
|
|
1818 UNGCPRO;
|
|
|
1819 return call5 (handler, Qcopy_file, filename, newname,
|
|
|
1820 ok_if_already_exists, keep_time);
|
|
|
1821 }
|
|
|
1822
|
|
|
1823 /* When second argument is a directory, copy the file into it.
|
|
|
1824 (copy-file "foo" "bar/") == (copy-file "foo" "bar/foo")
|
|
|
1825 */
|
|
|
1826 if (!NILP (Ffile_directory_p (newname)))
|
|
|
1827 {
|
|
|
1828 Lisp_Object args[3];
|
|
|
1829 struct gcpro ngcpro1;
|
|
|
1830 int i = 1;
|
|
|
1831
|
|
|
1832 args[0] = newname;
|
|
|
1833 args[1] = Qnil; args[2] = Qnil;
|
|
|
1834 NGCPRO1 (*args);
|
|
|
1835 ngcpro1.nvars = 3;
|
|
826
|
1836 if (!IS_DIRECTORY_SEP (string_byte (newname,
|
|
442
|
1837 XSTRING_LENGTH (newname) - 1)))
|
|
|
1838
|
|
|
1839 args[i++] = Fchar_to_string (Vdirectory_sep_char);
|
|
428
|
1840 args[i++] = Ffile_name_nondirectory (filename);
|
|
|
1841 newname = Fconcat (i, args);
|
|
|
1842 NUNGCPRO;
|
|
|
1843 }
|
|
|
1844
|
|
|
1845 if (NILP (ok_if_already_exists)
|
|
|
1846 || INTP (ok_if_already_exists))
|
|
|
1847 barf_or_query_if_file_exists (newname, "copy to it",
|
|
|
1848 INTP (ok_if_already_exists), &out_st);
|
|
771
|
1849 else if (qxe_stat (XSTRING_DATA (newname), &out_st) < 0)
|
|
428
|
1850 out_st.st_mode = 0;
|
|
|
1851
|
|
771
|
1852 ifd = qxe_interruptible_open (XSTRING_DATA (filename),
|
|
|
1853 O_RDONLY | OPEN_BINARY, 0);
|
|
428
|
1854 if (ifd < 0)
|
|
563
|
1855 report_file_error ("Opening input file", filename);
|
|
428
|
1856
|
|
|
1857 record_unwind_protect (close_file_unwind, make_int (ifd));
|
|
|
1858
|
|
|
1859 /* We can only copy regular files and symbolic links. Other files are not
|
|
|
1860 copyable by us. */
|
|
771
|
1861 input_file_statable_p = (qxe_fstat (ifd, &st) >= 0);
|
|
428
|
1862
|
|
442
|
1863 #ifndef WIN32_NATIVE
|
|
428
|
1864 if (out_st.st_mode != 0
|
|
|
1865 && st.st_dev == out_st.st_dev && st.st_ino == out_st.st_ino)
|
|
|
1866 {
|
|
|
1867 errno = 0;
|
|
|
1868 report_file_error ("Input and output files are the same",
|
|
563
|
1869 list3 (Qunbound, filename, newname));
|
|
428
|
1870 }
|
|
|
1871 #endif
|
|
|
1872
|
|
|
1873 #if defined (S_ISREG) && defined (S_ISLNK)
|
|
|
1874 if (input_file_statable_p)
|
|
|
1875 {
|
|
|
1876 if (!(S_ISREG (st.st_mode))
|
|
|
1877 /* XEmacs: have to allow S_ISCHR in order to copy /dev/null */
|
|
|
1878 #ifdef S_ISCHR
|
|
|
1879 && !(S_ISCHR (st.st_mode))
|
|
|
1880 #endif
|
|
|
1881 && !(S_ISLNK (st.st_mode)))
|
|
|
1882 {
|
|
|
1883 #if defined (EISDIR)
|
|
|
1884 /* Get a better looking error message. */
|
|
|
1885 errno = EISDIR;
|
|
|
1886 #endif /* EISDIR */
|
|
563
|
1887 report_file_error ("Non-regular file", filename);
|
|
428
|
1888 }
|
|
|
1889 }
|
|
|
1890 #endif /* S_ISREG && S_ISLNK */
|
|
|
1891
|
|
771
|
1892 ofd = qxe_open (XSTRING_DATA (newname),
|
|
|
1893 O_WRONLY | O_CREAT | O_TRUNC | OPEN_BINARY, CREAT_MODE);
|
|
428
|
1894 if (ofd < 0)
|
|
563
|
1895 report_file_error ("Opening output file", newname);
|
|
428
|
1896
|
|
|
1897 {
|
|
|
1898 Lisp_Object ofd_locative = noseeum_cons (make_int (ofd), Qnil);
|
|
|
1899
|
|
|
1900 record_unwind_protect (close_file_unwind, ofd_locative);
|
|
|
1901
|
|
|
1902 while ((n = read_allowing_quit (ifd, buf, sizeof (buf))) > 0)
|
|
|
1903 {
|
|
|
1904 if (write_allowing_quit (ofd, buf, n) != n)
|
|
563
|
1905 report_file_error ("I/O error", newname);
|
|
428
|
1906 }
|
|
|
1907
|
|
|
1908 /* Closing the output clobbers the file times on some systems. */
|
|
771
|
1909 if (retry_close (ofd) < 0)
|
|
563
|
1910 report_file_error ("I/O error", newname);
|
|
428
|
1911
|
|
|
1912 if (input_file_statable_p)
|
|
|
1913 {
|
|
442
|
1914 if (!NILP (keep_time))
|
|
|
1915 {
|
|
|
1916 EMACS_TIME atime, mtime;
|
|
|
1917 EMACS_SET_SECS_USECS (atime, st.st_atime, 0);
|
|
|
1918 EMACS_SET_SECS_USECS (mtime, st.st_mtime, 0);
|
|
592
|
1919 if (set_file_times (newname, atime, mtime))
|
|
|
1920 report_file_error ("I/O error", list1 (newname));
|
|
442
|
1921 }
|
|
771
|
1922 qxe_chmod (XSTRING_DATA (newname), st.st_mode & 07777);
|
|
428
|
1923 }
|
|
|
1924
|
|
|
1925 /* We'll close it by hand */
|
|
|
1926 XCAR (ofd_locative) = Qnil;
|
|
|
1927
|
|
|
1928 /* Close ifd */
|
|
771
|
1929 unbind_to (speccount);
|
|
428
|
1930 }
|
|
|
1931
|
|
|
1932 UNGCPRO;
|
|
|
1933 return Qnil;
|
|
|
1934 }
|
|
|
1935
|
|
|
1936 DEFUN ("make-directory-internal", Fmake_directory_internal, 1, 1, 0, /*
|
|
|
1937 Create a directory. One argument, a file name string.
|
|
|
1938 */
|
|
|
1939 (dirname_))
|
|
|
1940 {
|
|
|
1941 /* This function can GC. GC checked 1997.04.06. */
|
|
|
1942 Lisp_Object handler;
|
|
|
1943 struct gcpro gcpro1;
|
|
771
|
1944 DECLARE_EISTRING (dir);
|
|
428
|
1945
|
|
|
1946 CHECK_STRING (dirname_);
|
|
|
1947 dirname_ = Fexpand_file_name (dirname_, Qnil);
|
|
|
1948
|
|
|
1949 GCPRO1 (dirname_);
|
|
|
1950 handler = Ffind_file_name_handler (dirname_, Qmake_directory_internal);
|
|
|
1951 UNGCPRO;
|
|
|
1952 if (!NILP (handler))
|
|
|
1953 return (call2 (handler, Qmake_directory_internal, dirname_));
|
|
|
1954
|
|
771
|
1955 eicpy_lstr (dir, dirname_);
|
|
|
1956 if (eigetch_char (dir, eicharlen (dir) - 1) == '/')
|
|
|
1957 eidel (dir, eilen (dir) - 1, -1, 1, -1);
|
|
|
1958
|
|
|
1959 if (qxe_mkdir (eidata (dir), 0777) != 0)
|
|
563
|
1960 report_file_error ("Creating directory", dirname_);
|
|
428
|
1961
|
|
|
1962 return Qnil;
|
|
|
1963 }
|
|
|
1964
|
|
|
1965 DEFUN ("delete-directory", Fdelete_directory, 1, 1, "FDelete directory: ", /*
|
|
|
1966 Delete a directory. One argument, a file name or directory name string.
|
|
|
1967 */
|
|
|
1968 (dirname_))
|
|
|
1969 {
|
|
|
1970 /* This function can GC. GC checked 1997.04.06. */
|
|
|
1971 Lisp_Object handler;
|
|
|
1972 struct gcpro gcpro1;
|
|
|
1973
|
|
|
1974 CHECK_STRING (dirname_);
|
|
|
1975
|
|
|
1976 GCPRO1 (dirname_);
|
|
|
1977 dirname_ = Fexpand_file_name (dirname_, Qnil);
|
|
|
1978 dirname_ = Fdirectory_file_name (dirname_);
|
|
|
1979
|
|
|
1980 handler = Ffind_file_name_handler (dirname_, Qdelete_directory);
|
|
|
1981 UNGCPRO;
|
|
|
1982 if (!NILP (handler))
|
|
|
1983 return (call2 (handler, Qdelete_directory, dirname_));
|
|
|
1984
|
|
771
|
1985 if (qxe_rmdir (XSTRING_DATA (dirname_)) != 0)
|
|
563
|
1986 report_file_error ("Removing directory", dirname_);
|
|
428
|
1987
|
|
|
1988 return Qnil;
|
|
|
1989 }
|
|
|
1990
|
|
|
1991 DEFUN ("delete-file", Fdelete_file, 1, 1, "fDelete file: ", /*
|
|
442
|
1992 Delete the file named FILENAME (a string).
|
|
|
1993 If FILENAME has multiple names, it continues to exist with the other names.
|
|
428
|
1994 */
|
|
|
1995 (filename))
|
|
|
1996 {
|
|
|
1997 /* This function can GC. GC checked 1997.04.06. */
|
|
|
1998 Lisp_Object handler;
|
|
|
1999 struct gcpro gcpro1;
|
|
|
2000
|
|
|
2001 CHECK_STRING (filename);
|
|
|
2002 filename = Fexpand_file_name (filename, Qnil);
|
|
|
2003
|
|
|
2004 GCPRO1 (filename);
|
|
|
2005 handler = Ffind_file_name_handler (filename, Qdelete_file);
|
|
|
2006 UNGCPRO;
|
|
|
2007 if (!NILP (handler))
|
|
|
2008 return call2 (handler, Qdelete_file, filename);
|
|
|
2009
|
|
771
|
2010 if (0 > qxe_unlink (XSTRING_DATA (filename)))
|
|
563
|
2011 report_file_error ("Removing old name", filename);
|
|
428
|
2012 return Qnil;
|
|
|
2013 }
|
|
|
2014
|
|
|
2015 static Lisp_Object
|
|
2286
|
2016 internal_delete_file_1 (Lisp_Object UNUSED (ignore),
|
|
|
2017 Lisp_Object UNUSED (ignore2))
|
|
428
|
2018 {
|
|
|
2019 return Qt;
|
|
|
2020 }
|
|
|
2021
|
|
|
2022 /* Delete file FILENAME, returning 1 if successful and 0 if failed. */
|
|
|
2023
|
|
|
2024 int
|
|
|
2025 internal_delete_file (Lisp_Object filename)
|
|
|
2026 {
|
|
|
2027 /* This function can GC. GC checked 1997.04.06. */
|
|
|
2028 return NILP (condition_case_1 (Qt, Fdelete_file, filename,
|
|
|
2029 internal_delete_file_1, Qnil));
|
|
|
2030 }
|
|
|
2031
|
|
|
2032 DEFUN ("rename-file", Frename_file, 2, 3,
|
|
|
2033 "fRename file: \nFRename %s to file: \np", /*
|
|
444
|
2034 Rename FILENAME as NEWNAME. Both args must be strings.
|
|
|
2035 If file has names other than FILENAME, it continues to have those names.
|
|
428
|
2036 Signals a `file-already-exists' error if a file NEWNAME already exists
|
|
|
2037 unless optional third argument OK-IF-ALREADY-EXISTS is non-nil.
|
|
|
2038 A number as third arg means request confirmation if NEWNAME already exists.
|
|
|
2039 This is what happens in interactive use with M-x.
|
|
|
2040 */
|
|
|
2041 (filename, newname, ok_if_already_exists))
|
|
|
2042 {
|
|
|
2043 /* This function can GC. GC checked 1997.04.06. */
|
|
|
2044 Lisp_Object handler;
|
|
|
2045 struct gcpro gcpro1, gcpro2;
|
|
|
2046
|
|
|
2047 GCPRO2 (filename, newname);
|
|
|
2048 CHECK_STRING (filename);
|
|
|
2049 CHECK_STRING (newname);
|
|
|
2050 filename = Fexpand_file_name (filename, Qnil);
|
|
|
2051 newname = Fexpand_file_name (newname, Qnil);
|
|
|
2052
|
|
|
2053 /* If the file name has special constructs in it,
|
|
|
2054 call the corresponding file handler. */
|
|
|
2055 handler = Ffind_file_name_handler (filename, Qrename_file);
|
|
|
2056 if (NILP (handler))
|
|
|
2057 handler = Ffind_file_name_handler (newname, Qrename_file);
|
|
|
2058 if (!NILP (handler))
|
|
|
2059 {
|
|
|
2060 UNGCPRO;
|
|
|
2061 return call4 (handler, Qrename_file,
|
|
|
2062 filename, newname, ok_if_already_exists);
|
|
|
2063 }
|
|
|
2064
|
|
|
2065 /* When second argument is a directory, rename the file into it.
|
|
|
2066 (rename-file "foo" "bar/") == (rename-file "foo" "bar/foo")
|
|
|
2067 */
|
|
|
2068 if (!NILP (Ffile_directory_p (newname)))
|
|
|
2069 {
|
|
|
2070 Lisp_Object args[3];
|
|
|
2071 struct gcpro ngcpro1;
|
|
|
2072 int i = 1;
|
|
|
2073
|
|
|
2074 args[0] = newname;
|
|
|
2075 args[1] = Qnil; args[2] = Qnil;
|
|
|
2076 NGCPRO1 (*args);
|
|
|
2077 ngcpro1.nvars = 3;
|
|
826
|
2078 if (string_byte (newname, XSTRING_LENGTH (newname) - 1) != '/')
|
|
428
|
2079 args[i++] = build_string ("/");
|
|
|
2080 args[i++] = Ffile_name_nondirectory (filename);
|
|
|
2081 newname = Fconcat (i, args);
|
|
|
2082 NUNGCPRO;
|
|
|
2083 }
|
|
|
2084
|
|
|
2085 if (NILP (ok_if_already_exists)
|
|
|
2086 || INTP (ok_if_already_exists))
|
|
|
2087 barf_or_query_if_file_exists (newname, "rename to it",
|
|
|
2088 INTP (ok_if_already_exists), 0);
|
|
|
2089
|
|
442
|
2090 /* We have configure check for rename() and emulate using
|
|
|
2091 link()/unlink() if necessary. */
|
|
771
|
2092 if (0 > qxe_rename (XSTRING_DATA (filename), XSTRING_DATA (newname)))
|
|
428
|
2093 {
|
|
|
2094 if (errno == EXDEV)
|
|
|
2095 {
|
|
|
2096 Fcopy_file (filename, newname,
|
|
|
2097 /* We have already prompted if it was an integer,
|
|
|
2098 so don't have copy-file prompt again. */
|
|
|
2099 (NILP (ok_if_already_exists) ? Qnil : Qt),
|
|
|
2100 Qt);
|
|
|
2101 Fdelete_file (filename);
|
|
|
2102 }
|
|
|
2103 else
|
|
|
2104 {
|
|
563
|
2105 report_file_error ("Renaming", list3 (Qunbound, filename, newname));
|
|
428
|
2106 }
|
|
|
2107 }
|
|
|
2108 UNGCPRO;
|
|
|
2109 return Qnil;
|
|
|
2110 }
|
|
|
2111
|
|
|
2112 DEFUN ("add-name-to-file", Fadd_name_to_file, 2, 3,
|
|
|
2113 "fAdd name to file: \nFName to add to %s: \np", /*
|
|
444
|
2114 Give FILENAME additional name NEWNAME. Both args must be strings.
|
|
428
|
2115 Signals a `file-already-exists' error if a file NEWNAME already exists
|
|
|
2116 unless optional third argument OK-IF-ALREADY-EXISTS is non-nil.
|
|
|
2117 A number as third arg means request confirmation if NEWNAME already exists.
|
|
|
2118 This is what happens in interactive use with M-x.
|
|
|
2119 */
|
|
|
2120 (filename, newname, ok_if_already_exists))
|
|
|
2121 {
|
|
|
2122 /* This function can GC. GC checked 1997.04.06. */
|
|
|
2123 Lisp_Object handler;
|
|
|
2124 struct gcpro gcpro1, gcpro2;
|
|
|
2125
|
|
|
2126 GCPRO2 (filename, newname);
|
|
|
2127 CHECK_STRING (filename);
|
|
|
2128 CHECK_STRING (newname);
|
|
|
2129 filename = Fexpand_file_name (filename, Qnil);
|
|
|
2130 newname = Fexpand_file_name (newname, Qnil);
|
|
|
2131
|
|
|
2132 /* If the file name has special constructs in it,
|
|
|
2133 call the corresponding file handler. */
|
|
|
2134 handler = Ffind_file_name_handler (filename, Qadd_name_to_file);
|
|
|
2135 if (!NILP (handler))
|
|
|
2136 RETURN_UNGCPRO (call4 (handler, Qadd_name_to_file, filename,
|
|
|
2137 newname, ok_if_already_exists));
|
|
|
2138
|
|
|
2139 /* If the new name has special constructs in it,
|
|
|
2140 call the corresponding file handler. */
|
|
|
2141 handler = Ffind_file_name_handler (newname, Qadd_name_to_file);
|
|
|
2142 if (!NILP (handler))
|
|
|
2143 RETURN_UNGCPRO (call4 (handler, Qadd_name_to_file, filename,
|
|
|
2144 newname, ok_if_already_exists));
|
|
|
2145
|
|
|
2146 if (NILP (ok_if_already_exists)
|
|
|
2147 || INTP (ok_if_already_exists))
|
|
|
2148 barf_or_query_if_file_exists (newname, "make it a new name",
|
|
|
2149 INTP (ok_if_already_exists), 0);
|
|
771
|
2150 /* #### Emacs 20.6 contains an implementation of link() in w32.c.
|
|
|
2151 Need to port. */
|
|
|
2152 #ifndef HAVE_LINK
|
|
563
|
2153 signal_error_2 (Qunimplemented, "Adding new name", filename, newname);
|
|
771
|
2154 #else /* HAVE_LINK */
|
|
|
2155 qxe_unlink (XSTRING_DATA (newname));
|
|
|
2156 if (0 > qxe_link (XSTRING_DATA (filename), XSTRING_DATA (newname)))
|
|
428
|
2157 {
|
|
|
2158 report_file_error ("Adding new name",
|
|
563
|
2159 list3 (Qunbound, filename, newname));
|
|
428
|
2160 }
|
|
771
|
2161 #endif /* HAVE_LINK */
|
|
428
|
2162
|
|
|
2163 UNGCPRO;
|
|
|
2164 return Qnil;
|
|
|
2165 }
|
|
|
2166
|
|
|
2167 DEFUN ("make-symbolic-link", Fmake_symbolic_link, 2, 3,
|
|
|
2168 "FMake symbolic link to file: \nFMake symbolic link to file %s: \np", /*
|
|
|
2169 Make a symbolic link to FILENAME, named LINKNAME. Both args strings.
|
|
|
2170 Signals a `file-already-exists' error if a file LINKNAME already exists
|
|
|
2171 unless optional third argument OK-IF-ALREADY-EXISTS is non-nil.
|
|
|
2172 A number as third arg means request confirmation if LINKNAME already exists.
|
|
|
2173 This happens for interactive use with M-x.
|
|
|
2174 */
|
|
|
2175 (filename, linkname, ok_if_already_exists))
|
|
|
2176 {
|
|
|
2177 /* This function can GC. GC checked 1997.06.04. */
|
|
442
|
2178 /* XEmacs change: run handlers even if local machine doesn't have symlinks */
|
|
428
|
2179 Lisp_Object handler;
|
|
|
2180 struct gcpro gcpro1, gcpro2;
|
|
|
2181
|
|
|
2182 GCPRO2 (filename, linkname);
|
|
|
2183 CHECK_STRING (filename);
|
|
|
2184 CHECK_STRING (linkname);
|
|
|
2185 /* If the link target has a ~, we must expand it to get
|
|
|
2186 a truly valid file name. Otherwise, do not expand;
|
|
|
2187 we want to permit links to relative file names. */
|
|
826
|
2188 if (string_byte (filename, 0) == '~')
|
|
428
|
2189 filename = Fexpand_file_name (filename, Qnil);
|
|
|
2190 linkname = Fexpand_file_name (linkname, Qnil);
|
|
|
2191
|
|
|
2192 /* If the file name has special constructs in it,
|
|
|
2193 call the corresponding file handler. */
|
|
|
2194 handler = Ffind_file_name_handler (filename, Qmake_symbolic_link);
|
|
|
2195 if (!NILP (handler))
|
|
|
2196 RETURN_UNGCPRO (call4 (handler, Qmake_symbolic_link, filename, linkname,
|
|
|
2197 ok_if_already_exists));
|
|
|
2198
|
|
|
2199 /* If the new link name has special constructs in it,
|
|
|
2200 call the corresponding file handler. */
|
|
|
2201 handler = Ffind_file_name_handler (linkname, Qmake_symbolic_link);
|
|
|
2202 if (!NILP (handler))
|
|
|
2203 RETURN_UNGCPRO (call4 (handler, Qmake_symbolic_link, filename,
|
|
|
2204 linkname, ok_if_already_exists));
|
|
|
2205
|
|
771
|
2206 #ifdef HAVE_SYMLINK
|
|
428
|
2207 if (NILP (ok_if_already_exists)
|
|
|
2208 || INTP (ok_if_already_exists))
|
|
|
2209 barf_or_query_if_file_exists (linkname, "make it a link",
|
|
|
2210 INTP (ok_if_already_exists), 0);
|
|
|
2211
|
|
771
|
2212 qxe_unlink (XSTRING_DATA (linkname));
|
|
|
2213 if (0 > qxe_symlink (XSTRING_DATA (filename),
|
|
|
2214 XSTRING_DATA (linkname)))
|
|
428
|
2215 {
|
|
|
2216 report_file_error ("Making symbolic link",
|
|
563
|
2217 list3 (Qunbound, filename, linkname));
|
|
428
|
2218 }
|
|
771
|
2219 #endif
|
|
442
|
2220
|
|
428
|
2221 UNGCPRO;
|
|
|
2222 return Qnil;
|
|
|
2223 }
|
|
|
2224
|
|
|
2225 #ifdef HPUX_NET
|
|
|
2226
|
|
|
2227 DEFUN ("sysnetunam", Fsysnetunam, 2, 2, 0, /*
|
|
|
2228 Open a network connection to PATH using LOGIN as the login string.
|
|
|
2229 */
|
|
|
2230 (path, login))
|
|
|
2231 {
|
|
|
2232 int netresult;
|
|
1333
|
2233 const Extbyte *path_ext;
|
|
|
2234 const Extbyte *login_ext;
|
|
428
|
2235
|
|
|
2236 CHECK_STRING (path);
|
|
|
2237 CHECK_STRING (login);
|
|
|
2238
|
|
|
2239 /* netunam, being a strange-o system call only used once, is not
|
|
|
2240 encapsulated. */
|
|
440
|
2241
|
|
442
|
2242 LISP_STRING_TO_EXTERNAL (path, path_ext, Qfile_name);
|
|
|
2243 LISP_STRING_TO_EXTERNAL (login, login_ext, Qnative);
|
|
440
|
2244
|
|
|
2245 netresult = netunam (path_ext, login_ext);
|
|
|
2246
|
|
|
2247 return netresult == -1 ? Qnil : Qt;
|
|
428
|
2248 }
|
|
|
2249 #endif /* HPUX_NET */
|
|
|
2250
|
|
|
2251 DEFUN ("file-name-absolute-p", Ffile_name_absolute_p, 1, 1, 0, /*
|
|
|
2252 Return t if file FILENAME specifies an absolute path name.
|
|
|
2253 On Unix, this is a name starting with a `/' or a `~'.
|
|
|
2254 */
|
|
|
2255 (filename))
|
|
|
2256 {
|
|
|
2257 /* This function does not GC */
|
|
867
|
2258 Ibyte *ptr;
|
|
428
|
2259
|
|
|
2260 CHECK_STRING (filename);
|
|
|
2261 ptr = XSTRING_DATA (filename);
|
|
|
2262 return (IS_DIRECTORY_SEP (*ptr) || *ptr == '~'
|
|
657
|
2263 #ifdef WIN32_FILENAMES
|
|
428
|
2264 || (IS_DRIVE (*ptr) && ptr[1] == ':' && IS_DIRECTORY_SEP (ptr[2]))
|
|
|
2265 #endif
|
|
|
2266 ) ? Qt : Qnil;
|
|
|
2267 }
|
|
|
2268
|
|
|
2269 /* Return nonzero if file FILENAME exists and can be executed. */
|
|
|
2270
|
|
|
2271 static int
|
|
771
|
2272 check_executable (Lisp_Object filename)
|
|
428
|
2273 {
|
|
442
|
2274 #ifdef WIN32_NATIVE
|
|
428
|
2275 struct stat st;
|
|
771
|
2276 if (qxe_stat (XSTRING_DATA (filename), &st) < 0)
|
|
428
|
2277 return 0;
|
|
|
2278 return ((st.st_mode & S_IEXEC) != 0);
|
|
442
|
2279 #else /* not WIN32_NATIVE */
|
|
428
|
2280 #ifdef HAVE_EACCESS
|
|
771
|
2281 return qxe_eaccess (XSTRING_DATA (filename), X_OK) >= 0;
|
|
428
|
2282 #else
|
|
|
2283 /* Access isn't quite right because it uses the real uid
|
|
|
2284 and we really want to test with the effective uid.
|
|
|
2285 But Unix doesn't give us a right way to do it. */
|
|
771
|
2286 return qxe_access (XSTRING_DATA (filename), X_OK) >= 0;
|
|
428
|
2287 #endif /* HAVE_EACCESS */
|
|
442
|
2288 #endif /* not WIN32_NATIVE */
|
|
428
|
2289 }
|
|
|
2290
|
|
|
2291 /* Return nonzero if file FILENAME exists and can be written. */
|
|
|
2292
|
|
|
2293 static int
|
|
867
|
2294 check_writable (const Ibyte *filename)
|
|
428
|
2295 {
|
|
3728
|
2296 #if defined(WIN32_NATIVE) || defined(CYGWIN)
|
|
|
2297 #ifdef CYGWIN
|
|
|
2298 char filename_buffer[PATH_MAX];
|
|
|
2299 #endif
|
|
|
2300 // Since this has to work for a directory, we can't just call 'CreateFile'
|
|
|
2301 PSECURITY_DESCRIPTOR pDesc; /* Must be freed with LocalFree */
|
|
|
2302 /* these need not be freed, they point into pDesc */
|
|
|
2303 PSID psidOwner;
|
|
|
2304 PSID psidGroup;
|
|
|
2305 PACL pDacl;
|
|
|
2306 PACL pSacl;
|
|
|
2307 /* end of insides of descriptor */
|
|
|
2308 DWORD error;
|
|
|
2309 DWORD attributes;
|
|
|
2310 HANDLE tokenHandle;
|
|
|
2311 GENERIC_MAPPING genericMapping;
|
|
|
2312 DWORD accessMask;
|
|
|
2313 PRIVILEGE_SET PrivilegeSet;
|
|
|
2314 DWORD dwPrivSetSize = sizeof( PRIVILEGE_SET );
|
|
|
2315 BOOL fAccessGranted = FALSE;
|
|
3781
|
2316 DWORD dwAccessAllowed;
|
|
|
2317 Extbyte *fnameext;
|
|
3728
|
2318
|
|
|
2319 #ifdef CYGWIN
|
|
|
2320 cygwin_conv_to_full_win32_path(filename, filename_buffer);
|
|
|
2321 filename = (Ibyte*)filename_buffer;
|
|
|
2322 #endif
|
|
|
2323
|
|
|
2324 C_STRING_TO_TSTR(filename, fnameext);
|
|
3781
|
2325
|
|
|
2326 // First check for a normal file with the old-style readonly bit
|
|
|
2327 attributes = qxeGetFileAttributes(fnameext);
|
|
|
2328 if (FILE_ATTRIBUTE_READONLY == (attributes & (FILE_ATTRIBUTE_DIRECTORY|FILE_ATTRIBUTE_READONLY)))
|
|
|
2329 return 0;
|
|
|
2330
|
|
3728
|
2331 /* Win32 prototype lacks const. */
|
|
|
2332 error = qxeGetNamedSecurityInfo(fnameext, SE_FILE_OBJECT,
|
|
3781
|
2333 DACL_SECURITY_INFORMATION|GROUP_SECURITY_INFORMATION|OWNER_SECURITY_INFORMATION,
|
|
|
2334 &psidOwner, &psidGroup, &pDacl, &pSacl, &pDesc);
|
|
3728
|
2335 if(error != ERROR_SUCCESS) { // FAT?
|
|
3781
|
2336 attributes = qxeGetFileAttributes(fnameext);
|
|
3728
|
2337 return (attributes & FILE_ATTRIBUTE_DIRECTORY) || (0 == (attributes & FILE_ATTRIBUTE_READONLY));
|
|
|
2338 }
|
|
|
2339
|
|
|
2340 genericMapping.GenericRead = FILE_GENERIC_READ;
|
|
|
2341 genericMapping.GenericWrite = FILE_GENERIC_WRITE;
|
|
|
2342 genericMapping.GenericExecute = FILE_GENERIC_EXECUTE;
|
|
|
2343 genericMapping.GenericAll = FILE_ALL_ACCESS;
|
|
|
2344
|
|
|
2345 if(!ImpersonateSelf(SecurityDelegation)) {
|
|
|
2346 return 0;
|
|
|
2347 }
|
|
|
2348 if(!OpenThreadToken(GetCurrentThread(), TOKEN_ALL_ACCESS, TRUE, &tokenHandle)) {
|
|
|
2349 return 0;
|
|
|
2350 }
|
|
|
2351
|
|
|
2352 accessMask = GENERIC_WRITE;
|
|
|
2353 MapGenericMask(&accessMask, &genericMapping);
|
|
|
2354
|
|
|
2355 if(!AccessCheck(pDesc, tokenHandle, accessMask, &genericMapping,
|
|
|
2356 &PrivilegeSet, // receives privileges used in check
|
|
|
2357 &dwPrivSetSize, // size of PrivilegeSet buffer
|
|
|
2358 &dwAccessAllowed, // receives mask of allowed access rights
|
|
|
2359 &fAccessGranted))
|
|
|
2360 {
|
|
|
2361 CloseHandle(tokenHandle);
|
|
|
2362 RevertToSelf();
|
|
|
2363 LocalFree(pDesc);
|
|
|
2364 return 0;
|
|
|
2365 }
|
|
|
2366 CloseHandle(tokenHandle);
|
|
|
2367 RevertToSelf();
|
|
|
2368 LocalFree(pDesc);
|
|
|
2369 return fAccessGranted == TRUE;
|
|
|
2370 #else
|
|
428
|
2371 #ifdef HAVE_EACCESS
|
|
771
|
2372 return (qxe_eaccess (filename, W_OK) >= 0);
|
|
428
|
2373 #else
|
|
|
2374 /* Access isn't quite right because it uses the real uid
|
|
|
2375 and we really want to test with the effective uid.
|
|
|
2376 But Unix doesn't give us a right way to do it.
|
|
|
2377 Opening with O_WRONLY could work for an ordinary file,
|
|
|
2378 but would lose for directories. */
|
|
771
|
2379 return (qxe_access (filename, W_OK) >= 0);
|
|
428
|
2380 #endif
|
|
3728
|
2381 #endif
|
|
428
|
2382 }
|
|
|
2383
|
|
|
2384 DEFUN ("file-exists-p", Ffile_exists_p, 1, 1, 0, /*
|
|
|
2385 Return t if file FILENAME exists. (This does not mean you can read it.)
|
|
|
2386 See also `file-readable-p' and `file-attributes'.
|
|
|
2387 */
|
|
|
2388 (filename))
|
|
|
2389 {
|
|
442
|
2390 /* This function can call lisp; GC checked 2000-07-11 ben */
|
|
428
|
2391 Lisp_Object abspath;
|
|
|
2392 Lisp_Object handler;
|
|
|
2393 struct stat statbuf;
|
|
|
2394 struct gcpro gcpro1;
|
|
|
2395
|
|
|
2396 CHECK_STRING (filename);
|
|
|
2397 abspath = Fexpand_file_name (filename, Qnil);
|
|
|
2398
|
|
|
2399 /* If the file name has special constructs in it,
|
|
|
2400 call the corresponding file handler. */
|
|
|
2401 GCPRO1 (abspath);
|
|
|
2402 handler = Ffind_file_name_handler (abspath, Qfile_exists_p);
|
|
|
2403 UNGCPRO;
|
|
|
2404 if (!NILP (handler))
|
|
|
2405 return call2 (handler, Qfile_exists_p, abspath);
|
|
|
2406
|
|
771
|
2407 return qxe_stat (XSTRING_DATA (abspath), &statbuf) >= 0 ? Qt : Qnil;
|
|
428
|
2408 }
|
|
|
2409
|
|
|
2410 DEFUN ("file-executable-p", Ffile_executable_p, 1, 1, 0, /*
|
|
|
2411 Return t if FILENAME can be executed by you.
|
|
|
2412 For a directory, this means you can access files in that directory.
|
|
|
2413 */
|
|
|
2414 (filename))
|
|
|
2415
|
|
|
2416 {
|
|
442
|
2417 /* This function can GC. GC checked 07-11-2000 ben. */
|
|
428
|
2418 Lisp_Object abspath;
|
|
|
2419 Lisp_Object handler;
|
|
|
2420 struct gcpro gcpro1;
|
|
|
2421
|
|
|
2422 CHECK_STRING (filename);
|
|
|
2423 abspath = Fexpand_file_name (filename, Qnil);
|
|
|
2424
|
|
|
2425 /* If the file name has special constructs in it,
|
|
|
2426 call the corresponding file handler. */
|
|
|
2427 GCPRO1 (abspath);
|
|
|
2428 handler = Ffind_file_name_handler (abspath, Qfile_executable_p);
|
|
|
2429 UNGCPRO;
|
|
|
2430 if (!NILP (handler))
|
|
|
2431 return call2 (handler, Qfile_executable_p, abspath);
|
|
|
2432
|
|
771
|
2433 return check_executable (abspath) ? Qt : Qnil;
|
|
428
|
2434 }
|
|
|
2435
|
|
|
2436 DEFUN ("file-readable-p", Ffile_readable_p, 1, 1, 0, /*
|
|
|
2437 Return t if file FILENAME exists and you can read it.
|
|
|
2438 See also `file-exists-p' and `file-attributes'.
|
|
|
2439 */
|
|
|
2440 (filename))
|
|
|
2441 {
|
|
|
2442 /* This function can GC */
|
|
|
2443 Lisp_Object abspath = Qnil;
|
|
|
2444 Lisp_Object handler;
|
|
|
2445 struct gcpro gcpro1;
|
|
|
2446 GCPRO1 (abspath);
|
|
|
2447
|
|
|
2448 CHECK_STRING (filename);
|
|
|
2449 abspath = Fexpand_file_name (filename, Qnil);
|
|
|
2450
|
|
|
2451 /* If the file name has special constructs in it,
|
|
|
2452 call the corresponding file handler. */
|
|
|
2453 handler = Ffind_file_name_handler (abspath, Qfile_readable_p);
|
|
|
2454 if (!NILP (handler))
|
|
|
2455 RETURN_UNGCPRO (call2 (handler, Qfile_readable_p, abspath));
|
|
|
2456
|
|
2526
|
2457 #if defined (WIN32_FILENAMES)
|
|
428
|
2458 /* Under MS-DOS and Windows, open does not work for directories. */
|
|
|
2459 UNGCPRO;
|
|
771
|
2460 if (qxe_access (XSTRING_DATA (abspath), 0) == 0)
|
|
428
|
2461 return Qt;
|
|
|
2462 else
|
|
|
2463 return Qnil;
|
|
657
|
2464 #else /* not WIN32_FILENAMES */
|
|
428
|
2465 {
|
|
771
|
2466 int desc = qxe_interruptible_open (XSTRING_DATA (abspath),
|
|
|
2467 O_RDONLY | OPEN_BINARY, 0);
|
|
428
|
2468 UNGCPRO;
|
|
|
2469 if (desc < 0)
|
|
|
2470 return Qnil;
|
|
771
|
2471 retry_close (desc);
|
|
428
|
2472 return Qt;
|
|
|
2473 }
|
|
657
|
2474 #endif /* not WIN32_FILENAMES */
|
|
428
|
2475 }
|
|
|
2476
|
|
|
2477 /* Having this before file-symlink-p mysteriously caused it to be forgotten
|
|
|
2478 on the RT/PC. */
|
|
|
2479 DEFUN ("file-writable-p", Ffile_writable_p, 1, 1, 0, /*
|
|
|
2480 Return t if file FILENAME can be written or created by you.
|
|
|
2481 */
|
|
|
2482 (filename))
|
|
|
2483 {
|
|
|
2484 /* This function can GC. GC checked 1997.04.10. */
|
|
|
2485 Lisp_Object abspath, dir;
|
|
|
2486 Lisp_Object handler;
|
|
|
2487 struct stat statbuf;
|
|
|
2488 struct gcpro gcpro1;
|
|
|
2489
|
|
|
2490 CHECK_STRING (filename);
|
|
|
2491 abspath = Fexpand_file_name (filename, Qnil);
|
|
|
2492
|
|
|
2493 /* If the file name has special constructs in it,
|
|
|
2494 call the corresponding file handler. */
|
|
|
2495 GCPRO1 (abspath);
|
|
|
2496 handler = Ffind_file_name_handler (abspath, Qfile_writable_p);
|
|
|
2497 UNGCPRO;
|
|
|
2498 if (!NILP (handler))
|
|
|
2499 return call2 (handler, Qfile_writable_p, abspath);
|
|
|
2500
|
|
771
|
2501 if (qxe_stat (XSTRING_DATA (abspath), &statbuf) >= 0)
|
|
|
2502 return (check_writable (XSTRING_DATA (abspath))
|
|
428
|
2503 ? Qt : Qnil);
|
|
|
2504
|
|
|
2505
|
|
|
2506 GCPRO1 (abspath);
|
|
|
2507 dir = Ffile_name_directory (abspath);
|
|
|
2508 UNGCPRO;
|
|
867
|
2509 return (check_writable (!NILP (dir) ? XSTRING_DATA (dir) : (Ibyte *) "")
|
|
428
|
2510 ? Qt : Qnil);
|
|
|
2511 }
|
|
|
2512
|
|
|
2513 DEFUN ("file-symlink-p", Ffile_symlink_p, 1, 1, 0, /*
|
|
|
2514 Return non-nil if file FILENAME is the name of a symbolic link.
|
|
|
2515 The value is the name of the file to which it is linked.
|
|
|
2516 Otherwise returns nil.
|
|
|
2517 */
|
|
|
2518 (filename))
|
|
|
2519 {
|
|
|
2520 /* This function can GC. GC checked 1997.04.10. */
|
|
442
|
2521 /* XEmacs change: run handlers even if local machine doesn't have symlinks */
|
|
771
|
2522 #ifdef HAVE_READLINK
|
|
867
|
2523 Ibyte *buf;
|
|
428
|
2524 int bufsize;
|
|
|
2525 int valsize;
|
|
|
2526 Lisp_Object val;
|
|
442
|
2527 #endif
|
|
428
|
2528 Lisp_Object handler;
|
|
|
2529 struct gcpro gcpro1;
|
|
|
2530
|
|
|
2531 CHECK_STRING (filename);
|
|
|
2532 filename = Fexpand_file_name (filename, Qnil);
|
|
|
2533
|
|
|
2534 /* If the file name has special constructs in it,
|
|
|
2535 call the corresponding file handler. */
|
|
|
2536 GCPRO1 (filename);
|
|
|
2537 handler = Ffind_file_name_handler (filename, Qfile_symlink_p);
|
|
|
2538 UNGCPRO;
|
|
|
2539 if (!NILP (handler))
|
|
|
2540 return call2 (handler, Qfile_symlink_p, filename);
|
|
|
2541
|
|
771
|
2542 #ifdef HAVE_READLINK
|
|
428
|
2543 bufsize = 100;
|
|
|
2544 while (1)
|
|
|
2545 {
|
|
867
|
2546 buf = xnew_array_and_zero (Ibyte, bufsize);
|
|
771
|
2547 valsize = qxe_readlink (XSTRING_DATA (filename),
|
|
|
2548 buf, bufsize);
|
|
428
|
2549 if (valsize < bufsize) break;
|
|
|
2550 /* Buffer was not long enough */
|
|
1726
|
2551 xfree (buf, Ibyte *);
|
|
428
|
2552 bufsize *= 2;
|
|
|
2553 }
|
|
|
2554 if (valsize == -1)
|
|
|
2555 {
|
|
1726
|
2556 xfree (buf, Ibyte *);
|
|
428
|
2557 return Qnil;
|
|
|
2558 }
|
|
771
|
2559 val = make_string (buf, valsize);
|
|
1726
|
2560 xfree (buf, Ibyte *);
|
|
428
|
2561 return val;
|
|
2526
|
2562 #elif defined (WIN32_NATIVE)
|
|
|
2563 if (mswindows_shortcuts_are_symlinks)
|
|
|
2564 {
|
|
|
2565 /* We want to resolve the directory component and leave the rest
|
|
|
2566 alone. */
|
|
|
2567 Ibyte *path = XSTRING_DATA (filename);
|
|
|
2568 Ibyte *dirend =
|
|
|
2569 find_end_of_directory_component (path, XSTRING_LENGTH (filename));
|
|
|
2570 Ibyte *fname;
|
|
|
2571 DECLARE_EISTRING (dir);
|
|
|
2572
|
|
|
2573 if (dirend != path)
|
|
|
2574 {
|
|
|
2575 Ibyte *resdir;
|
|
|
2576 DECLARE_EISTRING (resname);
|
|
|
2577
|
|
|
2578 eicpy_raw (dir, path, dirend - path);
|
|
|
2579 PATHNAME_RESOLVE_LINKS (eidata (dir), resdir);
|
|
|
2580 eicpy_rawz (resname, resdir);
|
|
|
2581 eicat_rawz (resname, dirend);
|
|
|
2582 path = eidata (resname);
|
|
|
2583 }
|
|
|
2584
|
|
|
2585 fname = mswindows_read_link (path);
|
|
|
2586 if (!fname)
|
|
|
2587 return Qnil;
|
|
|
2588 {
|
|
|
2589 Lisp_Object val = build_intstring (fname);
|
|
|
2590 xfree (fname, Ibyte *);
|
|
|
2591 return val;
|
|
|
2592 }
|
|
|
2593 }
|
|
428
|
2594 return Qnil;
|
|
2526
|
2595 #else
|
|
|
2596 return Qnil;
|
|
|
2597 #endif
|
|
428
|
2598 }
|
|
|
2599
|
|
|
2600 DEFUN ("file-directory-p", Ffile_directory_p, 1, 1, 0, /*
|
|
|
2601 Return t if file FILENAME is the name of a directory as a file.
|
|
|
2602 A directory name spec may be given instead; then the value is t
|
|
|
2603 if the directory so specified exists and really is a directory.
|
|
|
2604 */
|
|
|
2605 (filename))
|
|
|
2606 {
|
|
|
2607 /* This function can GC. GC checked 1997.04.10. */
|
|
|
2608 Lisp_Object abspath;
|
|
|
2609 struct stat st;
|
|
|
2610 Lisp_Object handler;
|
|
|
2611 struct gcpro gcpro1;
|
|
|
2612
|
|
|
2613 GCPRO1 (current_buffer->directory);
|
|
|
2614 abspath = expand_and_dir_to_file (filename,
|
|
|
2615 current_buffer->directory);
|
|
|
2616 UNGCPRO;
|
|
|
2617
|
|
|
2618 /* If the file name has special constructs in it,
|
|
|
2619 call the corresponding file handler. */
|
|
|
2620 GCPRO1 (abspath);
|
|
|
2621 handler = Ffind_file_name_handler (abspath, Qfile_directory_p);
|
|
|
2622 UNGCPRO;
|
|
|
2623 if (!NILP (handler))
|
|
|
2624 return call2 (handler, Qfile_directory_p, abspath);
|
|
|
2625
|
|
771
|
2626 if (qxe_stat (XSTRING_DATA (abspath), &st) < 0)
|
|
428
|
2627 return Qnil;
|
|
|
2628 return (st.st_mode & S_IFMT) == S_IFDIR ? Qt : Qnil;
|
|
|
2629 }
|
|
|
2630
|
|
|
2631 DEFUN ("file-accessible-directory-p", Ffile_accessible_directory_p, 1, 1, 0, /*
|
|
|
2632 Return t if file FILENAME is the name of a directory as a file,
|
|
|
2633 and files in that directory can be opened by you. In order to use a
|
|
|
2634 directory as a buffer's current directory, this predicate must return true.
|
|
|
2635 A directory name spec may be given instead; then the value is t
|
|
|
2636 if the directory so specified exists and really is a readable and
|
|
|
2637 searchable directory.
|
|
|
2638 */
|
|
|
2639 (filename))
|
|
|
2640 {
|
|
|
2641 /* This function can GC. GC checked 1997.04.10. */
|
|
|
2642 Lisp_Object handler;
|
|
|
2643
|
|
|
2644 /* If the file name has special constructs in it,
|
|
|
2645 call the corresponding file handler. */
|
|
|
2646 handler = Ffind_file_name_handler (filename, Qfile_accessible_directory_p);
|
|
|
2647 if (!NILP (handler))
|
|
|
2648 return call2 (handler, Qfile_accessible_directory_p,
|
|
|
2649 filename);
|
|
|
2650
|
|
2526
|
2651 #if !defined (WIN32_NATIVE)
|
|
428
|
2652 if (NILP (Ffile_directory_p (filename)))
|
|
|
2653 return (Qnil);
|
|
|
2654 else
|
|
|
2655 return Ffile_executable_p (filename);
|
|
|
2656 #else
|
|
|
2657 {
|
|
|
2658 int tem;
|
|
|
2659 struct gcpro gcpro1;
|
|
|
2660 /* It's an unlikely combination, but yes we really do need to gcpro:
|
|
|
2661 Suppose that file-accessible-directory-p has no handler, but
|
|
|
2662 file-directory-p does have a handler; this handler causes a GC which
|
|
|
2663 relocates the string in `filename'; and finally file-directory-p
|
|
|
2664 returns non-nil. Then we would end up passing a garbaged string
|
|
|
2665 to file-executable-p. */
|
|
|
2666 GCPRO1 (filename);
|
|
|
2667 tem = (NILP (Ffile_directory_p (filename))
|
|
|
2668 || NILP (Ffile_executable_p (filename)));
|
|
|
2669 UNGCPRO;
|
|
|
2670 return tem ? Qnil : Qt;
|
|
|
2671 }
|
|
442
|
2672 #endif /* !defined(WIN32_NATIVE) */
|
|
428
|
2673 }
|
|
|
2674
|
|
|
2675 DEFUN ("file-regular-p", Ffile_regular_p, 1, 1, 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.
|
|
|
2678 */
|
|
|
2679 (filename))
|
|
|
2680 {
|
|
|
2681 /* This function can GC. GC checked 1997.04.10. */
|
|
|
2682 Lisp_Object abspath;
|
|
|
2683 struct stat st;
|
|
|
2684 Lisp_Object handler;
|
|
|
2685 struct gcpro gcpro1;
|
|
|
2686
|
|
|
2687 GCPRO1 (current_buffer->directory);
|
|
|
2688 abspath = expand_and_dir_to_file (filename, current_buffer->directory);
|
|
|
2689 UNGCPRO;
|
|
|
2690
|
|
|
2691 /* If the file name has special constructs in it,
|
|
|
2692 call the corresponding file handler. */
|
|
|
2693 GCPRO1 (abspath);
|
|
|
2694 handler = Ffind_file_name_handler (abspath, Qfile_regular_p);
|
|
|
2695 UNGCPRO;
|
|
|
2696 if (!NILP (handler))
|
|
|
2697 return call2 (handler, Qfile_regular_p, abspath);
|
|
|
2698
|
|
771
|
2699 if (qxe_stat (XSTRING_DATA (abspath), &st) < 0)
|
|
428
|
2700 return Qnil;
|
|
|
2701 return (st.st_mode & S_IFMT) == S_IFREG ? Qt : Qnil;
|
|
|
2702 }
|
|
|
2703
|
|
|
2704 DEFUN ("file-modes", Ffile_modes, 1, 1, 0, /*
|
|
444
|
2705 Return mode bits of file named FILENAME, as an integer.
|
|
428
|
2706 */
|
|
|
2707 (filename))
|
|
|
2708 {
|
|
|
2709 /* This function can GC. GC checked 1997.04.10. */
|
|
|
2710 Lisp_Object abspath;
|
|
|
2711 struct stat st;
|
|
|
2712 Lisp_Object handler;
|
|
|
2713 struct gcpro gcpro1;
|
|
|
2714
|
|
|
2715 GCPRO1 (current_buffer->directory);
|
|
|
2716 abspath = expand_and_dir_to_file (filename,
|
|
|
2717 current_buffer->directory);
|
|
|
2718 UNGCPRO;
|
|
|
2719
|
|
|
2720 /* If the file name has special constructs in it,
|
|
|
2721 call the corresponding file handler. */
|
|
|
2722 GCPRO1 (abspath);
|
|
|
2723 handler = Ffind_file_name_handler (abspath, Qfile_modes);
|
|
|
2724 UNGCPRO;
|
|
|
2725 if (!NILP (handler))
|
|
|
2726 return call2 (handler, Qfile_modes, abspath);
|
|
|
2727
|
|
771
|
2728 if (qxe_stat (XSTRING_DATA (abspath), &st) < 0)
|
|
428
|
2729 return Qnil;
|
|
|
2730 /* Syncing with FSF 19.34.6 note: not in FSF, #if 0'ed out here. */
|
|
|
2731 #if 0
|
|
442
|
2732 #ifdef WIN32_NATIVE
|
|
771
|
2733 if (check_executable (abspath))
|
|
428
|
2734 st.st_mode |= S_IEXEC;
|
|
442
|
2735 #endif /* WIN32_NATIVE */
|
|
428
|
2736 #endif /* 0 */
|
|
|
2737
|
|
|
2738 return make_int (st.st_mode & 07777);
|
|
|
2739 }
|
|
|
2740
|
|
|
2741 DEFUN ("set-file-modes", Fset_file_modes, 2, 2, 0, /*
|
|
444
|
2742 Set mode bits of file named FILENAME to MODE (an integer).
|
|
428
|
2743 Only the 12 low bits of MODE are used.
|
|
|
2744 */
|
|
|
2745 (filename, mode))
|
|
|
2746 {
|
|
|
2747 /* This function can GC. GC checked 1997.04.10. */
|
|
|
2748 Lisp_Object abspath;
|
|
|
2749 Lisp_Object handler;
|
|
|
2750 struct gcpro gcpro1;
|
|
|
2751
|
|
|
2752 GCPRO1 (current_buffer->directory);
|
|
|
2753 abspath = Fexpand_file_name (filename, current_buffer->directory);
|
|
|
2754 UNGCPRO;
|
|
|
2755
|
|
|
2756 CHECK_INT (mode);
|
|
|
2757
|
|
|
2758 /* If the file name has special constructs in it,
|
|
|
2759 call the corresponding file handler. */
|
|
|
2760 GCPRO1 (abspath);
|
|
|
2761 handler = Ffind_file_name_handler (abspath, Qset_file_modes);
|
|
|
2762 UNGCPRO;
|
|
|
2763 if (!NILP (handler))
|
|
|
2764 return call3 (handler, Qset_file_modes, abspath, mode);
|
|
|
2765
|
|
771
|
2766 if (qxe_chmod (XSTRING_DATA (abspath), XINT (mode)) < 0)
|
|
563
|
2767 report_file_error ("Doing chmod", abspath);
|
|
428
|
2768
|
|
|
2769 return Qnil;
|
|
|
2770 }
|
|
|
2771
|
|
|
2772 DEFUN ("set-default-file-modes", Fset_default_file_modes, 1, 1, 0, /*
|
|
|
2773 Set the file permission bits for newly created files.
|
|
444
|
2774 The argument MODE should be an integer; if a bit in MODE is 1,
|
|
|
2775 subsequently created files will not have the permission corresponding
|
|
|
2776 to that bit enabled. Only the low 9 bits are used.
|
|
428
|
2777 This setting is inherited by subprocesses.
|
|
|
2778 */
|
|
|
2779 (mode))
|
|
|
2780 {
|
|
|
2781 CHECK_INT (mode);
|
|
|
2782
|
|
|
2783 umask ((~ XINT (mode)) & 0777);
|
|
|
2784
|
|
|
2785 return Qnil;
|
|
|
2786 }
|
|
|
2787
|
|
|
2788 DEFUN ("default-file-modes", Fdefault_file_modes, 0, 0, 0, /*
|
|
|
2789 Return the default file protection for created files.
|
|
|
2790 The umask value determines which permissions are enabled in newly
|
|
|
2791 created files. If a permission's bit in the umask is 1, subsequently
|
|
|
2792 created files will not have that permission enabled.
|
|
|
2793 */
|
|
|
2794 ())
|
|
|
2795 {
|
|
|
2796 int mode;
|
|
|
2797
|
|
|
2798 mode = umask (0);
|
|
|
2799 umask (mode);
|
|
|
2800
|
|
|
2801 return make_int ((~ mode) & 0777);
|
|
|
2802 }
|
|
|
2803
|
|
|
2804 DEFUN ("unix-sync", Funix_sync, 0, 0, "", /*
|
|
|
2805 Tell Unix to finish all pending disk updates.
|
|
|
2806 */
|
|
|
2807 ())
|
|
|
2808 {
|
|
442
|
2809 #ifndef WIN32_NATIVE
|
|
428
|
2810 sync ();
|
|
|
2811 #endif
|
|
|
2812 return Qnil;
|
|
|
2813 }
|
|
|
2814
|
|
|
2815
|
|
|
2816 DEFUN ("file-newer-than-file-p", Ffile_newer_than_file_p, 2, 2, 0, /*
|
|
|
2817 Return t if file FILE1 is newer than file FILE2.
|
|
|
2818 If FILE1 does not exist, the answer is nil;
|
|
|
2819 otherwise, if FILE2 does not exist, the answer is t.
|
|
|
2820 */
|
|
|
2821 (file1, file2))
|
|
|
2822 {
|
|
|
2823 /* This function can GC. GC checked 1997.04.10. */
|
|
|
2824 Lisp_Object abspath1, abspath2;
|
|
|
2825 struct stat st;
|
|
|
2826 int mtime1;
|
|
|
2827 Lisp_Object handler;
|
|
|
2828 struct gcpro gcpro1, gcpro2, gcpro3;
|
|
|
2829
|
|
|
2830 CHECK_STRING (file1);
|
|
|
2831 CHECK_STRING (file2);
|
|
|
2832
|
|
|
2833 abspath1 = Qnil;
|
|
|
2834 abspath2 = Qnil;
|
|
|
2835
|
|
|
2836 GCPRO3 (abspath1, abspath2, current_buffer->directory);
|
|
|
2837 abspath1 = expand_and_dir_to_file (file1, current_buffer->directory);
|
|
|
2838 abspath2 = expand_and_dir_to_file (file2, current_buffer->directory);
|
|
|
2839
|
|
|
2840 /* If the file name has special constructs in it,
|
|
|
2841 call the corresponding file handler. */
|
|
|
2842 handler = Ffind_file_name_handler (abspath1, Qfile_newer_than_file_p);
|
|
|
2843 if (NILP (handler))
|
|
|
2844 handler = Ffind_file_name_handler (abspath2, Qfile_newer_than_file_p);
|
|
|
2845 UNGCPRO;
|
|
|
2846 if (!NILP (handler))
|
|
|
2847 return call3 (handler, Qfile_newer_than_file_p, abspath1,
|
|
|
2848 abspath2);
|
|
|
2849
|
|
771
|
2850 if (qxe_stat (XSTRING_DATA (abspath1), &st) < 0)
|
|
428
|
2851 return Qnil;
|
|
|
2852
|
|
|
2853 mtime1 = st.st_mtime;
|
|
|
2854
|
|
771
|
2855 if (qxe_stat (XSTRING_DATA (abspath2), &st) < 0)
|
|
428
|
2856 return Qt;
|
|
|
2857
|
|
|
2858 return (mtime1 > st.st_mtime) ? Qt : Qnil;
|
|
|
2859 }
|
|
|
2860
|
|
|
2861
|
|
|
2862 /* Stack sizes > 2**16 is a good way to elicit compiler bugs */
|
|
|
2863 /* #define READ_BUF_SIZE (2 << 16) */
|
|
|
2864 #define READ_BUF_SIZE (1 << 15)
|
|
|
2865
|
|
|
2866 DEFUN ("insert-file-contents-internal", Finsert_file_contents_internal,
|
|
|
2867 1, 7, 0, /*
|
|
|
2868 Insert contents of file FILENAME after point; no coding-system frobbing.
|
|
|
2869 This function is identical to `insert-file-contents' except for the
|
|
771
|
2870 handling of the CODESYS and USED-CODESYS arguments.
|
|
|
2871
|
|
|
2872 The file is decoded according to CODESYS; if omitted, no conversion
|
|
|
2873 happens. If USED-CODESYS is non-nil, it should be a symbol, and the actual
|
|
|
2874 coding system that was used for the decoding is stored into it. It will in
|
|
|
2875 general be different from CODESYS if CODESYS specifies automatic encoding
|
|
|
2876 detection or end-of-line detection.
|
|
428
|
2877
|
|
444
|
2878 Currently START and END refer to byte positions (as opposed to character
|
|
771
|
2879 positions), even in Mule and under MS Windows. (Fixing this, particularly
|
|
|
2880 under Mule, is very difficult.)
|
|
428
|
2881 */
|
|
444
|
2882 (filename, visit, start, end, replace, codesys, used_codesys))
|
|
428
|
2883 {
|
|
|
2884 /* This function can call lisp */
|
|
|
2885 struct stat st;
|
|
|
2886 int fd;
|
|
|
2887 int saverrno = 0;
|
|
|
2888 Charcount inserted = 0;
|
|
|
2889 int speccount;
|
|
3841
|
2890 struct gcpro gcpro1, gcpro2, gcpro3, gcpro4;
|
|
3814
|
2891 Lisp_Object val;
|
|
428
|
2892 int total;
|
|
867
|
2893 Ibyte read_buf[READ_BUF_SIZE];
|
|
428
|
2894 int mc_count;
|
|
|
2895 struct buffer *buf = current_buffer;
|
|
|
2896 Lisp_Object curbuf;
|
|
|
2897 int not_regular = 0;
|
|
771
|
2898 int do_speedy_insert =
|
|
|
2899 coding_system_is_binary (Fget_coding_system (codesys));
|
|
428
|
2900
|
|
|
2901 if (buf->base_buffer && ! NILP (visit))
|
|
563
|
2902 invalid_operation ("Cannot do file visiting in an indirect buffer", Qunbound);
|
|
428
|
2903
|
|
|
2904 /* No need to call Fbarf_if_buffer_read_only() here.
|
|
|
2905 That's called in begin_multiple_change() or wherever. */
|
|
|
2906
|
|
|
2907 val = Qnil;
|
|
|
2908
|
|
|
2909 /* #### dmoore - should probably check in various places to see if
|
|
|
2910 curbuf was killed and if so signal an error? */
|
|
|
2911
|
|
793
|
2912 curbuf = wrap_buffer (buf);
|
|
428
|
2913
|
|
3814
|
2914 GCPRO4 (filename, val, visit, curbuf);
|
|
428
|
2915
|
|
|
2916 mc_count = (NILP (replace)) ?
|
|
|
2917 begin_multiple_change (buf, BUF_PT (buf), BUF_PT (buf)) :
|
|
|
2918 begin_multiple_change (buf, BUF_BEG (buf), BUF_Z (buf));
|
|
|
2919
|
|
|
2920 speccount = specpdl_depth (); /* begin_multiple_change also adds
|
|
|
2921 an unwind_protect */
|
|
|
2922
|
|
|
2923 filename = Fexpand_file_name (filename, Qnil);
|
|
|
2924
|
|
|
2925 if (!NILP (used_codesys))
|
|
|
2926 CHECK_SYMBOL (used_codesys);
|
|
|
2927
|
|
444
|
2928 if ( (!NILP (start) || !NILP (end)) && !NILP (visit) )
|
|
563
|
2929 invalid_operation ("Attempt to visit less than an entire file", Qunbound);
|
|
428
|
2930
|
|
|
2931 fd = -1;
|
|
|
2932
|
|
771
|
2933 if (qxe_stat (XSTRING_DATA (filename), &st) < 0)
|
|
428
|
2934 {
|
|
|
2935 badopen:
|
|
|
2936 if (NILP (visit))
|
|
563
|
2937 report_file_error ("Opening input file", filename);
|
|
428
|
2938 st.st_mtime = -1;
|
|
|
2939 goto notfound;
|
|
|
2940 }
|
|
|
2941
|
|
|
2942 #ifdef S_IFREG
|
|
|
2943 /* Signal an error if we are accessing a non-regular file, with
|
|
444
|
2944 REPLACE, START or END being non-nil. */
|
|
428
|
2945 if (!S_ISREG (st.st_mode))
|
|
|
2946 {
|
|
|
2947 not_regular = 1;
|
|
|
2948
|
|
|
2949 if (!NILP (visit))
|
|
|
2950 goto notfound;
|
|
|
2951
|
|
444
|
2952 if (!NILP (replace) || !NILP (start) || !NILP (end))
|
|
428
|
2953 {
|
|
|
2954 end_multiple_change (buf, mc_count);
|
|
|
2955
|
|
444
|
2956 RETURN_UNGCPRO
|
|
|
2957 (Fsignal (Qfile_error,
|
|
771
|
2958 list2 (build_msg_string("not a regular file"),
|
|
444
|
2959 filename)));
|
|
428
|
2960 }
|
|
|
2961 }
|
|
|
2962 #endif /* S_IFREG */
|
|
|
2963
|
|
444
|
2964 if (!NILP (start))
|
|
|
2965 CHECK_INT (start);
|
|
428
|
2966 else
|
|
444
|
2967 start = Qzero;
|
|
428
|
2968
|
|
|
2969 if (!NILP (end))
|
|
|
2970 CHECK_INT (end);
|
|
|
2971
|
|
|
2972 if (fd < 0)
|
|
|
2973 {
|
|
771
|
2974 if ((fd = qxe_interruptible_open (XSTRING_DATA (filename),
|
|
|
2975 O_RDONLY | OPEN_BINARY, 0)) < 0)
|
|
428
|
2976 goto badopen;
|
|
|
2977 }
|
|
|
2978
|
|
|
2979 /* Replacement should preserve point as it preserves markers. */
|
|
|
2980 if (!NILP (replace))
|
|
|
2981 record_unwind_protect (restore_point_unwind, Fpoint_marker (Qnil, Qnil));
|
|
|
2982
|
|
|
2983 record_unwind_protect (close_file_unwind, make_int (fd));
|
|
|
2984
|
|
|
2985 /* Supposedly happens on VMS. */
|
|
|
2986 if (st.st_size < 0)
|
|
563
|
2987 signal_error (Qfile_error, "File size is negative", Qunbound);
|
|
428
|
2988
|
|
|
2989 if (NILP (end))
|
|
|
2990 {
|
|
|
2991 if (!not_regular)
|
|
|
2992 {
|
|
|
2993 end = make_int (st.st_size);
|
|
|
2994 if (XINT (end) != st.st_size)
|
|
563
|
2995 out_of_memory ("Maximum buffer size exceeded", Qunbound);
|
|
428
|
2996 }
|
|
|
2997 }
|
|
|
2998
|
|
|
2999 /* If requested, replace the accessible part of the buffer
|
|
|
3000 with the file contents. Avoid replacing text at the
|
|
|
3001 beginning or end of the buffer that matches the file contents;
|
|
771
|
3002 that preserves markers pointing to the unchanged parts. */
|
|
|
3003 /* The replace-mode code is currently implemented by comparing the
|
|
|
3004 file on disk with the contents in the buffer, character by character.
|
|
|
3005 That works only if the characters on disk are exactly what will go into
|
|
|
3006 the buffer -- i.e. `binary' conversion.
|
|
|
3007
|
|
|
3008 FSF tries to implement this in all situations, even the non-binary
|
|
|
3009 conversion, by (in that case) loading the whole converted file into a
|
|
|
3010 separate memory area, then doing the comparison. I really don't see
|
|
|
3011 the point of this, and it will fail spectacularly if the file is many
|
|
|
3012 megabytes in size. To try to get around this, we could certainly read
|
|
|
3013 from the beginning and decode as necessary before comparing, but doing
|
|
|
3014 the same at the end gets very difficult because of the possibility of
|
|
|
3015 modal coding systems -- trying to decode data from any point forward
|
|
|
3016 without decoding previous data might always give you different results
|
|
|
3017 from starting at the beginning. We could try further tricks like
|
|
|
3018 keeping track of which coding systems are non-modal and providing some
|
|
|
3019 extra method for such coding systems to be given a chunk of data that
|
|
|
3020 came from a specified location in a specified file and ask the coding
|
|
|
3021 systems to return a "sync point" from which the data can be read
|
|
|
3022 forward and have results guaranteed to be the same as reading from the
|
|
|
3023 beginning to that point, but I really don't think it's worth it. If
|
|
|
3024 we implemented the FSF "brute-force" method, we would have to put a
|
|
|
3025 reasonable maximum file size on the files. Is any of this worth it?
|
|
|
3026 --ben
|
|
|
3027
|
|
3638
|
3028
|
|
|
3029 It's probably not worth it, and despite what you might take from the
|
|
|
3030 above, we don't do it currently; that is, for non-"binary" coding
|
|
|
3031 systems, we don't try to implement replace-mode at all. See the
|
|
|
3032 do_speedy_insert variable above. The upside of this is that our API
|
|
|
3033 is consistent and not buggy. -- Aidan Kehoe, Fri Oct 27 21:02:30 CEST
|
|
|
3034 2006
|
|
771
|
3035 */
|
|
|
3036
|
|
428
|
3037 if (!NILP (replace))
|
|
|
3038 {
|
|
771
|
3039 if (!do_speedy_insert)
|
|
|
3040 buffer_delete_range (buf, BUF_BEG (buf), BUF_Z (buf),
|
|
|
3041 !NILP (visit) ? INSDEL_NO_LOCKING : 0);
|
|
|
3042 else
|
|
428
|
3043 {
|
|
771
|
3044 char buffer[1 << 14];
|
|
|
3045 Charbpos same_at_start = BUF_BEGV (buf);
|
|
|
3046 Charbpos same_at_end = BUF_ZV (buf);
|
|
|
3047 int overlap;
|
|
|
3048
|
|
|
3049 /* Count how many chars at the start of the file
|
|
|
3050 match the text at the beginning of the buffer. */
|
|
|
3051 while (1)
|
|
|
3052 {
|
|
|
3053 int nread;
|
|
|
3054 Charbpos charbpos;
|
|
|
3055 nread = read_allowing_quit (fd, buffer, sizeof (buffer));
|
|
|
3056 if (nread < 0)
|
|
|
3057 report_file_error ("Reading", filename);
|
|
|
3058 else if (nread == 0)
|
|
|
3059 break;
|
|
|
3060 charbpos = 0;
|
|
|
3061 while (charbpos < nread && same_at_start < BUF_ZV (buf)
|
|
814
|
3062 && BUF_FETCH_CHAR (buf, same_at_start) ==
|
|
|
3063 buffer[charbpos])
|
|
771
|
3064 same_at_start++, charbpos++;
|
|
|
3065 /* If we found a discrepancy, stop the scan.
|
|
|
3066 Otherwise loop around and scan the next bufferful. */
|
|
|
3067 if (charbpos != nread)
|
|
|
3068 break;
|
|
|
3069 }
|
|
|
3070 /* If the file matches the buffer completely,
|
|
|
3071 there's no need to replace anything. */
|
|
|
3072 if (same_at_start - BUF_BEGV (buf) == st.st_size)
|
|
|
3073 {
|
|
|
3074 retry_close (fd);
|
|
|
3075 unbind_to (speccount);
|
|
|
3076 /* Truncate the buffer to the size of the file. */
|
|
|
3077 buffer_delete_range (buf, same_at_start, same_at_end,
|
|
|
3078 !NILP (visit) ? INSDEL_NO_LOCKING : 0);
|
|
|
3079 goto handled;
|
|
|
3080 }
|
|
|
3081 /* Count how many chars at the end of the file
|
|
|
3082 match the text at the end of the buffer. */
|
|
|
3083 while (1)
|
|
|
3084 {
|
|
|
3085 int total_read, nread;
|
|
814
|
3086 Charcount charbpos, curpos, trial;
|
|
771
|
3087
|
|
|
3088 /* At what file position are we now scanning? */
|
|
|
3089 curpos = st.st_size - (BUF_ZV (buf) - same_at_end);
|
|
|
3090 /* If the entire file matches the buffer tail, stop the scan. */
|
|
|
3091 if (curpos == 0)
|
|
|
3092 break;
|
|
|
3093 /* How much can we scan in the next step? */
|
|
|
3094 trial = min (curpos, (Charbpos) sizeof (buffer));
|
|
|
3095 if (lseek (fd, curpos - trial, 0) < 0)
|
|
|
3096 report_file_error ("Setting file position", filename);
|
|
|
3097
|
|
|
3098 total_read = 0;
|
|
|
3099 while (total_read < trial)
|
|
|
3100 {
|
|
|
3101 nread = read_allowing_quit (fd, buffer + total_read,
|
|
|
3102 trial - total_read);
|
|
|
3103 if (nread <= 0)
|
|
|
3104 report_file_error ("IO error reading file", filename);
|
|
|
3105 total_read += nread;
|
|
|
3106 }
|
|
|
3107 /* Scan this bufferful from the end, comparing with
|
|
|
3108 the Emacs buffer. */
|
|
|
3109 charbpos = total_read;
|
|
|
3110 /* Compare with same_at_start to avoid counting some buffer text
|
|
|
3111 as matching both at the file's beginning and at the end. */
|
|
|
3112 while (charbpos > 0 && same_at_end > same_at_start
|
|
|
3113 && BUF_FETCH_CHAR (buf, same_at_end - 1) ==
|
|
|
3114 buffer[charbpos - 1])
|
|
|
3115 same_at_end--, charbpos--;
|
|
|
3116 /* If we found a discrepancy, stop the scan.
|
|
|
3117 Otherwise loop around and scan the preceding bufferful. */
|
|
|
3118 if (charbpos != 0)
|
|
|
3119 break;
|
|
|
3120 /* If display current starts at beginning of line,
|
|
|
3121 keep it that way. */
|
|
|
3122 if (XBUFFER (XWINDOW (Fselected_window (Qnil))->buffer) == buf)
|
|
|
3123 XWINDOW (Fselected_window (Qnil))->start_at_line_beg =
|
|
|
3124 !NILP (Fbolp (wrap_buffer (buf)));
|
|
|
3125 }
|
|
|
3126
|
|
|
3127 /* Don't try to reuse the same piece of text twice. */
|
|
|
3128 overlap = same_at_start - BUF_BEGV (buf) -
|
|
|
3129 (same_at_end + st.st_size - BUF_ZV (buf));
|
|
|
3130 if (overlap > 0)
|
|
|
3131 same_at_end += overlap;
|
|
|
3132
|
|
|
3133 /* Arrange to read only the nonmatching middle part of the file. */
|
|
|
3134 start = make_int (same_at_start - BUF_BEGV (buf));
|
|
|
3135 end = make_int (st.st_size - (BUF_ZV (buf) - same_at_end));
|
|
|
3136
|
|
428
|
3137 buffer_delete_range (buf, same_at_start, same_at_end,
|
|
|
3138 !NILP (visit) ? INSDEL_NO_LOCKING : 0);
|
|
771
|
3139 /* Insert from the file at the proper position. */
|
|
|
3140 BUF_SET_PT (buf, same_at_start);
|
|
428
|
3141 }
|
|
|
3142 }
|
|
|
3143
|
|
|
3144 if (!not_regular)
|
|
|
3145 {
|
|
444
|
3146 total = XINT (end) - XINT (start);
|
|
428
|
3147
|
|
|
3148 /* Make sure point-max won't overflow after this insertion. */
|
|
|
3149 if (total != XINT (make_int (total)))
|
|
563
|
3150 out_of_memory ("Maximum buffer size exceeded", Qunbound);
|
|
428
|
3151 }
|
|
|
3152 else
|
|
|
3153 /* For a special file, all we can do is guess. The value of -1
|
|
|
3154 will make the stream functions read as much as possible. */
|
|
|
3155 total = -1;
|
|
|
3156
|
|
444
|
3157 if (XINT (start) != 0
|
|
428
|
3158 /* why was this here? asked jwz. The reason is that the replace-mode
|
|
|
3159 connivings above will normally put the file pointer other than
|
|
|
3160 where it should be. */
|
|
771
|
3161 || (!NILP (replace) && do_speedy_insert))
|
|
428
|
3162 {
|
|
444
|
3163 if (lseek (fd, XINT (start), 0) < 0)
|
|
563
|
3164 report_file_error ("Setting file position", filename);
|
|
428
|
3165 }
|
|
|
3166
|
|
|
3167 {
|
|
665
|
3168 Charbpos cur_point = BUF_PT (buf);
|
|
428
|
3169 struct gcpro ngcpro1;
|
|
|
3170 Lisp_Object stream = make_filedesc_input_stream (fd, 0, total,
|
|
|
3171 LSTR_ALLOW_QUIT);
|
|
|
3172
|
|
|
3173 NGCPRO1 (stream);
|
|
|
3174 Lstream_set_buffering (XLSTREAM (stream), LSTREAM_BLOCKN_BUFFERED, 65536);
|
|
771
|
3175 stream = make_coding_input_stream
|
|
|
3176 (XLSTREAM (stream), get_coding_system_for_text_file (codesys, 1),
|
|
800
|
3177 CODING_DECODE, 0);
|
|
428
|
3178 Lstream_set_buffering (XLSTREAM (stream), LSTREAM_BLOCKN_BUFFERED, 65536);
|
|
|
3179
|
|
|
3180 record_unwind_protect (delete_stream_unwind, stream);
|
|
|
3181
|
|
|
3182 /* No need to limit the amount of stuff we attempt to read. (It would
|
|
|
3183 be incorrect, anyway, when Mule is enabled.) Instead, the limiting
|
|
|
3184 occurs inside of the filedesc stream. */
|
|
|
3185 while (1)
|
|
|
3186 {
|
|
665
|
3187 Bytecount this_len;
|
|
428
|
3188 Charcount cc_inserted;
|
|
|
3189
|
|
|
3190 QUIT;
|
|
|
3191 this_len = Lstream_read (XLSTREAM (stream), read_buf,
|
|
|
3192 sizeof (read_buf));
|
|
|
3193
|
|
|
3194 if (this_len <= 0)
|
|
|
3195 {
|
|
|
3196 if (this_len < 0)
|
|
|
3197 saverrno = errno;
|
|
|
3198 break;
|
|
|
3199 }
|
|
|
3200
|
|
|
3201 cc_inserted = buffer_insert_raw_string_1 (buf, cur_point, read_buf,
|
|
|
3202 this_len,
|
|
|
3203 !NILP (visit)
|
|
|
3204 ? INSDEL_NO_LOCKING : 0);
|
|
|
3205 inserted += cc_inserted;
|
|
|
3206 cur_point += cc_inserted;
|
|
|
3207 }
|
|
|
3208 if (!NILP (used_codesys))
|
|
|
3209 {
|
|
|
3210 Fset (used_codesys,
|
|
771
|
3211 XCODING_SYSTEM_NAME
|
|
|
3212 (coding_stream_detected_coding_system (XLSTREAM (stream))));
|
|
428
|
3213 }
|
|
|
3214 NUNGCPRO;
|
|
|
3215 }
|
|
|
3216
|
|
|
3217 /* Close the file/stream */
|
|
771
|
3218 unbind_to (speccount);
|
|
428
|
3219
|
|
|
3220 if (saverrno != 0)
|
|
|
3221 {
|
|
563
|
3222 errno = saverrno;
|
|
|
3223 report_file_error ("Reading", filename);
|
|
428
|
3224 }
|
|
|
3225
|
|
|
3226 notfound:
|
|
|
3227 handled:
|
|
|
3228
|
|
|
3229 end_multiple_change (buf, mc_count);
|
|
|
3230
|
|
|
3231 if (!NILP (visit))
|
|
|
3232 {
|
|
|
3233 if (!EQ (buf->undo_list, Qt))
|
|
|
3234 buf->undo_list = Qnil;
|
|
3814
|
3235 buf->modtime = st.st_mtime;
|
|
|
3236 buf->filename = filename;
|
|
|
3237 /* XEmacs addition: */
|
|
|
3238 /* This function used to be in C, ostensibly so that
|
|
|
3239 it could be called here. But that's just silly.
|
|
|
3240 There's no reason C code can't call out to Lisp
|
|
|
3241 code, and it's a lot cleaner this way. */
|
|
|
3242 /* Note: compute-buffer-file-truename is called for
|
|
|
3243 side-effect! Its return value is intentionally
|
|
|
3244 ignored. */
|
|
|
3245 if (!NILP (Ffboundp (Qcompute_buffer_file_truename)))
|
|
|
3246 call1 (Qcompute_buffer_file_truename, wrap_buffer (buf));
|
|
428
|
3247 BUF_SAVE_MODIFF (buf) = BUF_MODIFF (buf);
|
|
|
3248 buf->auto_save_modified = BUF_MODIFF (buf);
|
|
|
3249 buf->saved_size = make_int (BUF_SIZE (buf));
|
|
|
3250 #ifdef CLASH_DETECTION
|
|
3814
|
3251 if (!NILP (buf->file_truename))
|
|
|
3252 unlock_file (buf->file_truename);
|
|
|
3253 unlock_file (filename);
|
|
428
|
3254 #endif /* CLASH_DETECTION */
|
|
|
3255 if (not_regular)
|
|
|
3256 RETURN_UNGCPRO (Fsignal (Qfile_error,
|
|
771
|
3257 list2 (build_msg_string ("not a regular file"),
|
|
428
|
3258 filename)));
|
|
|
3259
|
|
|
3260 /* If visiting nonexistent file, return nil. */
|
|
|
3261 if (buf->modtime == -1)
|
|
|
3262 report_file_error ("Opening input file",
|
|
563
|
3263 filename);
|
|
428
|
3264 }
|
|
|
3265
|
|
|
3266 /* Decode file format */
|
|
|
3267 if (inserted > 0)
|
|
|
3268 {
|
|
|
3269 Lisp_Object insval = call3 (Qformat_decode,
|
|
|
3270 Qnil, make_int (inserted), visit);
|
|
|
3271 CHECK_INT (insval);
|
|
|
3272 inserted = XINT (insval);
|
|
|
3273 }
|
|
|
3274
|
|
|
3275 if (inserted > 0)
|
|
|
3276 {
|
|
2367
|
3277 GC_EXTERNAL_LIST_LOOP_2 (p, Vafter_insert_file_functions)
|
|
428
|
3278 {
|
|
2367
|
3279 Lisp_Object insval = call1 (p, make_int (inserted));
|
|
428
|
3280 if (!NILP (insval))
|
|
|
3281 {
|
|
|
3282 CHECK_NATNUM (insval);
|
|
|
3283 inserted = XINT (insval);
|
|
|
3284 }
|
|
|
3285 }
|
|
2367
|
3286 END_GC_EXTERNAL_LIST_LOOP (p);
|
|
428
|
3287 }
|
|
|
3288
|
|
|
3289 UNGCPRO;
|
|
|
3290
|
|
|
3291 if (!NILP (val))
|
|
|
3292 return (val);
|
|
|
3293 else
|
|
|
3294 return (list2 (filename, make_int (inserted)));
|
|
|
3295 }
|
|
|
3296
|
|
|
3297
|
|
|
3298 static int a_write (Lisp_Object outstream, Lisp_Object instream, int pos,
|
|
|
3299 Lisp_Object *annot);
|
|
|
3300 static Lisp_Object build_annotations (Lisp_Object start, Lisp_Object end);
|
|
|
3301
|
|
|
3302 /* If build_annotations switched buffers, switch back to BUF.
|
|
|
3303 Kill the temporary buffer that was selected in the meantime. */
|
|
|
3304
|
|
|
3305 static Lisp_Object
|
|
|
3306 build_annotations_unwind (Lisp_Object buf)
|
|
|
3307 {
|
|
|
3308 Lisp_Object tembuf;
|
|
|
3309
|
|
|
3310 if (XBUFFER (buf) == current_buffer)
|
|
|
3311 return Qnil;
|
|
|
3312 tembuf = Fcurrent_buffer ();
|
|
|
3313 Fset_buffer (buf);
|
|
|
3314 Fkill_buffer (tembuf);
|
|
|
3315 return Qnil;
|
|
|
3316 }
|
|
|
3317
|
|
4266
|
3318 DEFUN ("write-region-internal", Fwrite_region_internal, 3, 8,
|
|
428
|
3319 "r\nFWrite region to file: ", /*
|
|
|
3320 Write current region into specified file; no coding-system frobbing.
|
|
4266
|
3321
|
|
|
3322 This function is almost identical to `write-region'; see that function for
|
|
|
3323 documentation of the START, END, FILENAME, APPEND, VISIT, and LOCKNAME
|
|
|
3324 arguments. CODESYS specifies the encoding to be used for the file; if it is
|
|
|
3325 nil, no code conversion occurs. (With `write-region' the coding system is
|
|
|
3326 determined automatically if not specified.)
|
|
|
3327
|
|
|
3328 MUSTBENEW specifies that a check for an existing file of the same name
|
|
|
3329 should be made. If it is 'excl, XEmacs will error on detecting such a file
|
|
|
3330 and never write it. If it is some other non-nil value, the user will be
|
|
|
3331 prompted to confirm the overwriting of an existing file. If it is nil,
|
|
|
3332 existing files are silently overwritten when file system permissions allow
|
|
|
3333 this.
|
|
764
|
3334
|
|
|
3335 As a special kludge to support auto-saving, when START is nil START and
|
|
|
3336 END are set to the beginning and end, respectively, of the buffer,
|
|
|
3337 regardless of any restrictions. Don't use this feature. It is documented
|
|
|
3338 here because write-region handler writers need to be aware of it.
|
|
4266
|
3339
|
|
428
|
3340 */
|
|
4266
|
3341 (start, end, filename, append, visit, lockname, codesys,
|
|
|
3342 mustbenew))
|
|
428
|
3343 {
|
|
442
|
3344 /* This function can call lisp. GC checked 2000-07-28 ben */
|
|
428
|
3345 int desc;
|
|
|
3346 int failure;
|
|
|
3347 int save_errno = 0;
|
|
|
3348 struct stat st;
|
|
442
|
3349 Lisp_Object fn = Qnil;
|
|
428
|
3350 int speccount = specpdl_depth ();
|
|
|
3351 int visiting_other = STRINGP (visit);
|
|
|
3352 int visiting = (EQ (visit, Qt) || visiting_other);
|
|
|
3353 int quietly = (!visiting && !NILP (visit));
|
|
|
3354 Lisp_Object visit_file = Qnil;
|
|
|
3355 Lisp_Object annotations = Qnil;
|
|
|
3356 struct buffer *given_buffer;
|
|
665
|
3357 Charbpos start1, end1;
|
|
442
|
3358 struct gcpro gcpro1, gcpro2, gcpro3, gcpro4, gcpro5;
|
|
|
3359 struct gcpro ngcpro1, ngcpro2;
|
|
793
|
3360 Lisp_Object curbuf = wrap_buffer (current_buffer);
|
|
|
3361
|
|
442
|
3362
|
|
|
3363 /* start, end, visit, and append are never modified in this fun
|
|
|
3364 so we don't protect them. */
|
|
|
3365 GCPRO5 (visit_file, filename, codesys, lockname, annotations);
|
|
|
3366 NGCPRO2 (curbuf, fn);
|
|
|
3367
|
|
|
3368 /* [[ dmoore - if Fexpand_file_name or handlers kill the buffer,
|
|
428
|
3369 we should signal an error rather than blissfully continuing
|
|
|
3370 along. ARGH, this function is going to lose lose lose. We need
|
|
|
3371 to protect the current_buffer from being destroyed, but the
|
|
442
|
3372 multiple return points make this a pain in the butt. ]] we do
|
|
|
3373 protect curbuf now. --ben */
|
|
428
|
3374
|
|
771
|
3375 codesys = get_coding_system_for_text_file (codesys, 0);
|
|
428
|
3376
|
|
|
3377 if (current_buffer->base_buffer && ! NILP (visit))
|
|
442
|
3378 invalid_operation ("Cannot do file visiting in an indirect buffer",
|
|
|
3379 curbuf);
|
|
428
|
3380
|
|
|
3381 if (!NILP (start) && !STRINGP (start))
|
|
|
3382 get_buffer_range_char (current_buffer, start, end, &start1, &end1, 0);
|
|
|
3383
|
|
|
3384 {
|
|
|
3385 Lisp_Object handler;
|
|
|
3386
|
|
4266
|
3387 if (!NILP (mustbenew) && !EQ (mustbenew, Qexcl))
|
|
|
3388 barf_or_query_if_file_exists (filename, "overwrite", 1, NULL);
|
|
|
3389
|
|
428
|
3390 if (visiting_other)
|
|
|
3391 visit_file = Fexpand_file_name (visit, Qnil);
|
|
|
3392 else
|
|
|
3393 visit_file = filename;
|
|
|
3394 filename = Fexpand_file_name (filename, Qnil);
|
|
|
3395
|
|
|
3396 if (NILP (lockname))
|
|
|
3397 lockname = visit_file;
|
|
|
3398
|
|
442
|
3399 /* We used to UNGCPRO here. BAD! visit_file is used below after
|
|
|
3400 more Lisp calling. */
|
|
428
|
3401 /* If the file name has special constructs in it,
|
|
|
3402 call the corresponding file handler. */
|
|
|
3403 handler = Ffind_file_name_handler (filename, Qwrite_region);
|
|
|
3404 /* If FILENAME has no handler, see if VISIT has one. */
|
|
|
3405 if (NILP (handler) && STRINGP (visit))
|
|
|
3406 handler = Ffind_file_name_handler (visit, Qwrite_region);
|
|
|
3407
|
|
|
3408 if (!NILP (handler))
|
|
|
3409 {
|
|
|
3410 Lisp_Object val = call8 (handler, Qwrite_region, start, end,
|
|
|
3411 filename, append, visit, lockname, codesys);
|
|
|
3412 if (visiting)
|
|
|
3413 {
|
|
|
3414 BUF_SAVE_MODIFF (current_buffer) = BUF_MODIFF (current_buffer);
|
|
|
3415 current_buffer->saved_size = make_int (BUF_SIZE (current_buffer));
|
|
|
3416 current_buffer->filename = visit_file;
|
|
|
3417 MARK_MODELINE_CHANGED;
|
|
|
3418 }
|
|
442
|
3419 NUNGCPRO;
|
|
|
3420 UNGCPRO;
|
|
428
|
3421 return val;
|
|
|
3422 }
|
|
|
3423 }
|
|
|
3424
|
|
|
3425 #ifdef CLASH_DETECTION
|
|
|
3426 if (!auto_saving)
|
|
442
|
3427 lock_file (lockname);
|
|
428
|
3428 #endif /* CLASH_DETECTION */
|
|
|
3429
|
|
|
3430 /* Special kludge to simplify auto-saving. */
|
|
|
3431 if (NILP (start))
|
|
|
3432 {
|
|
|
3433 start1 = BUF_BEG (current_buffer);
|
|
|
3434 end1 = BUF_Z (current_buffer);
|
|
|
3435 }
|
|
|
3436
|
|
|
3437 record_unwind_protect (build_annotations_unwind, Fcurrent_buffer ());
|
|
|
3438
|
|
|
3439 given_buffer = current_buffer;
|
|
|
3440 annotations = build_annotations (start, end);
|
|
|
3441 if (current_buffer != given_buffer)
|
|
|
3442 {
|
|
|
3443 start1 = BUF_BEGV (current_buffer);
|
|
|
3444 end1 = BUF_ZV (current_buffer);
|
|
|
3445 }
|
|
|
3446
|
|
|
3447 fn = filename;
|
|
|
3448 desc = -1;
|
|
|
3449 if (!NILP (append))
|
|
|
3450 {
|
|
4266
|
3451 desc = qxe_open (XSTRING_DATA (fn), O_WRONLY | OPEN_BINARY
|
|
|
3452 | (EQ (mustbenew, Qexcl) ? O_EXCL : 0), 0);
|
|
428
|
3453 }
|
|
|
3454 if (desc < 0)
|
|
|
3455 {
|
|
771
|
3456 desc = qxe_open (XSTRING_DATA (fn),
|
|
4266
|
3457 O_WRONLY | (EQ (mustbenew, Qexcl) ? O_EXCL : O_TRUNC)
|
|
|
3458 | O_CREAT | OPEN_BINARY,
|
|
771
|
3459 auto_saving ? auto_save_mode_bits : CREAT_MODE);
|
|
428
|
3460 }
|
|
|
3461
|
|
|
3462 if (desc < 0)
|
|
|
3463 {
|
|
|
3464 #ifdef CLASH_DETECTION
|
|
|
3465 save_errno = errno;
|
|
|
3466 if (!auto_saving) unlock_file (lockname);
|
|
|
3467 errno = save_errno;
|
|
|
3468 #endif /* CLASH_DETECTION */
|
|
563
|
3469 report_file_error ("Opening output file", filename);
|
|
428
|
3470 }
|
|
|
3471
|
|
|
3472 {
|
|
|
3473 Lisp_Object desc_locative = Fcons (make_int (desc), Qnil);
|
|
|
3474 Lisp_Object instream = Qnil, outstream = Qnil;
|
|
442
|
3475 struct gcpro nngcpro1, nngcpro2;
|
|
|
3476 NNGCPRO2 (instream, outstream);
|
|
428
|
3477
|
|
|
3478 record_unwind_protect (close_file_unwind, desc_locative);
|
|
|
3479
|
|
|
3480 if (!NILP (append))
|
|
|
3481 {
|
|
|
3482 if (lseek (desc, 0, 2) < 0)
|
|
|
3483 {
|
|
|
3484 #ifdef CLASH_DETECTION
|
|
|
3485 if (!auto_saving) unlock_file (lockname);
|
|
|
3486 #endif /* CLASH_DETECTION */
|
|
|
3487 report_file_error ("Lseek error",
|
|
563
|
3488 filename);
|
|
428
|
3489 }
|
|
|
3490 }
|
|
|
3491
|
|
|
3492 failure = 0;
|
|
|
3493
|
|
|
3494 /* Note: I tried increasing the buffering size, along with
|
|
|
3495 various other tricks, but nothing seemed to make much of
|
|
|
3496 a difference in the time it took to save a large file.
|
|
|
3497 (Actually that's not true. With a local disk, changing
|
|
|
3498 the buffer size doesn't seem to make much difference.
|
|
|
3499 With an NFS-mounted disk, it could make a lot of difference
|
|
|
3500 because you're affecting the number of network requests
|
|
|
3501 that need to be made, and there could be a large latency
|
|
|
3502 for each request. So I've increased the buffer size
|
|
|
3503 to 64K.) */
|
|
|
3504 outstream = make_filedesc_output_stream (desc, 0, -1, 0);
|
|
|
3505 Lstream_set_buffering (XLSTREAM (outstream),
|
|
|
3506 LSTREAM_BLOCKN_BUFFERED, 65536);
|
|
|
3507 outstream =
|
|
800
|
3508 make_coding_output_stream (XLSTREAM (outstream), codesys,
|
|
|
3509 CODING_ENCODE, 0);
|
|
428
|
3510 Lstream_set_buffering (XLSTREAM (outstream),
|
|
|
3511 LSTREAM_BLOCKN_BUFFERED, 65536);
|
|
|
3512 if (STRINGP (start))
|
|
|
3513 {
|
|
|
3514 instream = make_lisp_string_input_stream (start, 0, -1);
|
|
|
3515 start1 = 0;
|
|
|
3516 }
|
|
|
3517 else
|
|
|
3518 instream = make_lisp_buffer_input_stream (current_buffer, start1, end1,
|
|
|
3519 LSTR_SELECTIVE |
|
|
|
3520 LSTR_IGNORE_ACCESSIBLE);
|
|
|
3521 failure = (0 > (a_write (outstream, instream, start1,
|
|
|
3522 &annotations)));
|
|
|
3523 save_errno = errno;
|
|
|
3524 /* Note that this doesn't close the desc since we created the
|
|
|
3525 stream without the LSTR_CLOSING flag, but it does
|
|
|
3526 flush out any buffered data. */
|
|
|
3527 if (Lstream_close (XLSTREAM (outstream)) < 0)
|
|
|
3528 {
|
|
|
3529 failure = 1;
|
|
|
3530 save_errno = errno;
|
|
|
3531 }
|
|
|
3532 Lstream_close (XLSTREAM (instream));
|
|
|
3533
|
|
|
3534 #ifdef HAVE_FSYNC
|
|
|
3535 /* Note fsync appears to change the modtime on BSD4.2 (both vax and sun).
|
|
|
3536 Disk full in NFS may be reported here. */
|
|
|
3537 /* mib says that closing the file will try to write as fast as NFS can do
|
|
|
3538 it, and that means the fsync here is not crucial for autosave files. */
|
|
|
3539 if (!auto_saving && fsync (desc) < 0
|
|
|
3540 /* If fsync fails with EINTR, don't treat that as serious. */
|
|
|
3541 && errno != EINTR)
|
|
|
3542 {
|
|
|
3543 failure = 1;
|
|
|
3544 save_errno = errno;
|
|
|
3545 }
|
|
|
3546 #endif /* HAVE_FSYNC */
|
|
|
3547
|
|
440
|
3548 /* Spurious "file has changed on disk" warnings used to be seen on
|
|
|
3549 systems where close() can change the modtime. This is known to
|
|
|
3550 happen on various NFS file systems, on Windows, and on Linux.
|
|
|
3551 Rather than handling this on a per-system basis, we
|
|
771
|
3552 unconditionally do the qxe_stat() after the retry_close(). */
|
|
428
|
3553
|
|
|
3554 /* NFS can report a write failure now. */
|
|
771
|
3555 if (retry_close (desc) < 0)
|
|
428
|
3556 {
|
|
|
3557 failure = 1;
|
|
|
3558 save_errno = errno;
|
|
|
3559 }
|
|
|
3560
|
|
|
3561 /* Discard the close unwind-protect. Execute the one for
|
|
|
3562 build_annotations (switches back to the original current buffer
|
|
|
3563 as necessary). */
|
|
|
3564 XCAR (desc_locative) = Qnil;
|
|
771
|
3565 unbind_to (speccount);
|
|
442
|
3566
|
|
|
3567 NNUNGCPRO;
|
|
428
|
3568 }
|
|
|
3569
|
|
771
|
3570 qxe_stat (XSTRING_DATA (fn), &st);
|
|
428
|
3571
|
|
|
3572 #ifdef CLASH_DETECTION
|
|
|
3573 if (!auto_saving)
|
|
|
3574 unlock_file (lockname);
|
|
|
3575 #endif /* CLASH_DETECTION */
|
|
|
3576
|
|
|
3577 /* Do this before reporting IO error
|
|
|
3578 to avoid a "file has changed on disk" warning on
|
|
|
3579 next attempt to save. */
|
|
|
3580 if (visiting)
|
|
|
3581 current_buffer->modtime = st.st_mtime;
|
|
|
3582
|
|
|
3583 if (failure)
|
|
442
|
3584 {
|
|
|
3585 errno = save_errno;
|
|
563
|
3586 report_file_error ("Writing file", fn);
|
|
442
|
3587 }
|
|
428
|
3588
|
|
|
3589 if (visiting)
|
|
|
3590 {
|
|
|
3591 BUF_SAVE_MODIFF (current_buffer) = BUF_MODIFF (current_buffer);
|
|
|
3592 current_buffer->saved_size = make_int (BUF_SIZE (current_buffer));
|
|
|
3593 current_buffer->filename = visit_file;
|
|
|
3594 MARK_MODELINE_CHANGED;
|
|
|
3595 }
|
|
|
3596 else if (quietly)
|
|
|
3597 {
|
|
442
|
3598 NUNGCPRO;
|
|
|
3599 UNGCPRO;
|
|
428
|
3600 return Qnil;
|
|
|
3601 }
|
|
|
3602
|
|
|
3603 if (!auto_saving)
|
|
|
3604 {
|
|
|
3605 if (visiting_other)
|
|
|
3606 message ("Wrote %s", XSTRING_DATA (visit_file));
|
|
|
3607 else
|
|
|
3608 {
|
|
446
|
3609 Lisp_Object fsp = Qnil;
|
|
442
|
3610 struct gcpro nngcpro1;
|
|
|
3611
|
|
|
3612 NNGCPRO1 (fsp);
|
|
428
|
3613 fsp = Ffile_symlink_p (fn);
|
|
|
3614 if (NILP (fsp))
|
|
|
3615 message ("Wrote %s", XSTRING_DATA (fn));
|
|
|
3616 else
|
|
|
3617 message ("Wrote %s (symlink to %s)",
|
|
|
3618 XSTRING_DATA (fn), XSTRING_DATA (fsp));
|
|
442
|
3619 NNUNGCPRO;
|
|
428
|
3620 }
|
|
|
3621 }
|
|
442
|
3622 NUNGCPRO;
|
|
|
3623 UNGCPRO;
|
|
428
|
3624 return Qnil;
|
|
|
3625 }
|
|
|
3626
|
|
|
3627 /* #### This is such a load of shit!!!! There is no way we should define
|
|
|
3628 something so stupid as a subr, just sort the fucking list more
|
|
|
3629 intelligently. */
|
|
|
3630 DEFUN ("car-less-than-car", Fcar_less_than_car, 2, 2, 0, /*
|
|
|
3631 Return t if (car A) is numerically less than (car B).
|
|
|
3632 */
|
|
|
3633 (a, b))
|
|
|
3634 {
|
|
|
3635 Lisp_Object objs[2];
|
|
|
3636 objs[0] = Fcar (a);
|
|
|
3637 objs[1] = Fcar (b);
|
|
|
3638 return Flss (2, objs);
|
|
|
3639 }
|
|
|
3640
|
|
|
3641 /* Heh heh heh, let's define this too, just to aggravate the person who
|
|
|
3642 wrote the above comment. */
|
|
|
3643 DEFUN ("cdr-less-than-cdr", Fcdr_less_than_cdr, 2, 2, 0, /*
|
|
|
3644 Return t if (cdr A) is numerically less than (cdr B).
|
|
|
3645 */
|
|
|
3646 (a, b))
|
|
|
3647 {
|
|
|
3648 Lisp_Object objs[2];
|
|
|
3649 objs[0] = Fcdr (a);
|
|
|
3650 objs[1] = Fcdr (b);
|
|
|
3651 return Flss (2, objs);
|
|
|
3652 }
|
|
|
3653
|
|
|
3654 /* Build the complete list of annotations appropriate for writing out
|
|
|
3655 the text between START and END, by calling all the functions in
|
|
|
3656 write-region-annotate-functions and merging the lists they return.
|
|
|
3657 If one of these functions switches to a different buffer, we assume
|
|
|
3658 that buffer contains altered text. Therefore, the caller must
|
|
|
3659 make sure to restore the current buffer in all cases,
|
|
|
3660 as save-excursion would do. */
|
|
|
3661
|
|
|
3662 static Lisp_Object
|
|
|
3663 build_annotations (Lisp_Object start, Lisp_Object end)
|
|
|
3664 {
|
|
|
3665 /* This function can GC */
|
|
|
3666 Lisp_Object annotations;
|
|
|
3667 Lisp_Object p, res;
|
|
|
3668 struct gcpro gcpro1, gcpro2;
|
|
793
|
3669 Lisp_Object original_buffer = wrap_buffer (current_buffer);
|
|
|
3670
|
|
428
|
3671
|
|
|
3672 annotations = Qnil;
|
|
|
3673 p = Vwrite_region_annotate_functions;
|
|
|
3674 GCPRO2 (annotations, p);
|
|
|
3675 while (!NILP (p))
|
|
|
3676 {
|
|
|
3677 struct buffer *given_buffer = current_buffer;
|
|
|
3678 Vwrite_region_annotations_so_far = annotations;
|
|
|
3679 res = call2 (Fcar (p), start, end);
|
|
|
3680 /* If the function makes a different buffer current,
|
|
|
3681 assume that means this buffer contains altered text to be output.
|
|
|
3682 Reset START and END from the buffer bounds
|
|
|
3683 and discard all previous annotations because they should have
|
|
|
3684 been dealt with by this function. */
|
|
|
3685 if (current_buffer != given_buffer)
|
|
|
3686 {
|
|
|
3687 start = make_int (BUF_BEGV (current_buffer));
|
|
|
3688 end = make_int (BUF_ZV (current_buffer));
|
|
|
3689 annotations = Qnil;
|
|
|
3690 }
|
|
|
3691 Flength (res); /* Check basic validity of return value */
|
|
|
3692 annotations = merge (annotations, res, Qcar_less_than_car);
|
|
|
3693 p = Fcdr (p);
|
|
|
3694 }
|
|
|
3695
|
|
|
3696 /* Now do the same for annotation functions implied by the file-format */
|
|
|
3697 if (auto_saving && (!EQ (Vauto_save_file_format, Qt)))
|
|
|
3698 p = Vauto_save_file_format;
|
|
|
3699 else
|
|
|
3700 p = current_buffer->file_format;
|
|
|
3701 while (!NILP (p))
|
|
|
3702 {
|
|
|
3703 struct buffer *given_buffer = current_buffer;
|
|
|
3704 Vwrite_region_annotations_so_far = annotations;
|
|
|
3705 res = call4 (Qformat_annotate_function, Fcar (p), start, end,
|
|
|
3706 original_buffer);
|
|
|
3707 if (current_buffer != given_buffer)
|
|
|
3708 {
|
|
|
3709 start = make_int (BUF_BEGV (current_buffer));
|
|
|
3710 end = make_int (BUF_ZV (current_buffer));
|
|
|
3711 annotations = Qnil;
|
|
|
3712 }
|
|
|
3713 Flength (res);
|
|
|
3714 annotations = merge (annotations, res, Qcar_less_than_car);
|
|
|
3715 p = Fcdr (p);
|
|
|
3716 }
|
|
|
3717 UNGCPRO;
|
|
|
3718 return annotations;
|
|
|
3719 }
|
|
|
3720
|
|
|
3721 /* Write to stream OUTSTREAM the characters from INSTREAM (it is read until
|
|
|
3722 EOF is encountered), assuming they start at position POS in the buffer
|
|
|
3723 of string that STREAM refers to. Intersperse with them the annotations
|
|
|
3724 from *ANNOT that fall into the range of positions we are reading from,
|
|
|
3725 each at its appropriate position.
|
|
|
3726
|
|
|
3727 Modify *ANNOT by discarding elements as we output them.
|
|
|
3728 The return value is negative in case of system call failure. */
|
|
|
3729
|
|
|
3730 /* 4K should probably be fine. We just need to reduce the number of
|
|
|
3731 function calls to reasonable level. The Lstream stuff itself will
|
|
|
3732 batch to 64K to reduce the number of system calls. */
|
|
|
3733
|
|
|
3734 #define A_WRITE_BATCH_SIZE 4096
|
|
|
3735
|
|
|
3736 static int
|
|
|
3737 a_write (Lisp_Object outstream, Lisp_Object instream, int pos,
|
|
|
3738 Lisp_Object *annot)
|
|
|
3739 {
|
|
|
3740 Lisp_Object tem;
|
|
|
3741 int nextpos;
|
|
|
3742 unsigned char largebuf[A_WRITE_BATCH_SIZE];
|
|
|
3743 Lstream *instr = XLSTREAM (instream);
|
|
|
3744 Lstream *outstr = XLSTREAM (outstream);
|
|
|
3745
|
|
|
3746 while (LISTP (*annot))
|
|
|
3747 {
|
|
|
3748 tem = Fcar_safe (Fcar (*annot));
|
|
|
3749 if (INTP (tem))
|
|
|
3750 nextpos = XINT (tem);
|
|
|
3751 else
|
|
|
3752 nextpos = INT_MAX;
|
|
|
3753 #ifdef MULE
|
|
|
3754 /* If there are annotations left and we have Mule, then we
|
|
867
|
3755 have to do the I/O one ichar at a time so we can
|
|
428
|
3756 determine when to insert the annotation. */
|
|
|
3757 if (!NILP (*annot))
|
|
|
3758 {
|
|
867
|
3759 Ichar ch;
|
|
|
3760 while (pos != nextpos && (ch = Lstream_get_ichar (instr)) != EOF)
|
|
428
|
3761 {
|
|
867
|
3762 if (Lstream_put_ichar (outstr, ch) < 0)
|
|
428
|
3763 return -1;
|
|
|
3764 pos++;
|
|
|
3765 }
|
|
|
3766 }
|
|
|
3767 else
|
|
|
3768 #endif /* MULE */
|
|
|
3769 {
|
|
|
3770 while (pos != nextpos)
|
|
|
3771 {
|
|
|
3772 /* Otherwise there is no point to that. Just go in batches. */
|
|
|
3773 int chunk = min (nextpos - pos, A_WRITE_BATCH_SIZE);
|
|
|
3774
|
|
|
3775 chunk = Lstream_read (instr, largebuf, chunk);
|
|
|
3776 if (chunk < 0)
|
|
|
3777 return -1;
|
|
|
3778 if (chunk == 0) /* EOF */
|
|
|
3779 break;
|
|
771
|
3780 if (Lstream_write (outstr, largebuf, chunk) < 0)
|
|
428
|
3781 return -1;
|
|
|
3782 pos += chunk;
|
|
|
3783 }
|
|
|
3784 }
|
|
|
3785 if (pos == nextpos)
|
|
|
3786 {
|
|
|
3787 tem = Fcdr (Fcar (*annot));
|
|
|
3788 if (STRINGP (tem))
|
|
|
3789 {
|
|
|
3790 if (Lstream_write (outstr, XSTRING_DATA (tem),
|
|
|
3791 XSTRING_LENGTH (tem)) < 0)
|
|
|
3792 return -1;
|
|
|
3793 }
|
|
|
3794 *annot = Fcdr (*annot);
|
|
|
3795 }
|
|
|
3796 else
|
|
|
3797 return 0;
|
|
|
3798 }
|
|
|
3799 return -1;
|
|
|
3800 }
|
|
|
3801
|
|
|
3802
|
|
|
3803
|
|
|
3804 #if 0
|
|
|
3805 #include <des_crypt.h>
|
|
|
3806
|
|
|
3807 #define CRYPT_BLOCK_SIZE 8 /* bytes */
|
|
|
3808 #define CRYPT_KEY_SIZE 8 /* bytes */
|
|
|
3809
|
|
|
3810 DEFUN ("encrypt-string", Fencrypt_string, 2, 2, 0, /*
|
|
|
3811 Encrypt STRING using KEY.
|
|
|
3812 */
|
|
|
3813 (string, key))
|
|
|
3814 {
|
|
2367
|
3815 /* !!#### Needs work */
|
|
1333
|
3816 Extbyte *encrypted_string, *raw_key;
|
|
|
3817 Extbyte *string_ext, *key_ext;
|
|
|
3818 Bytecount string_size_ext, key_size_ext, rounded_size, extra, key_size;
|
|
|
3819
|
|
428
|
3820 CHECK_STRING (string);
|
|
|
3821 CHECK_STRING (key);
|
|
|
3822
|
|
1333
|
3823 LISP_STRING_TO_SIZED_EXTERNAL (string, string_ext, string_size_ext, Qbinary);
|
|
|
3824 LISP_STRING_TO_SIZED_EXTERNAL (key, key_ext, key_size_ext, Qbinary);
|
|
|
3825
|
|
|
3826 extra = string_size_ext % CRYPT_BLOCK_SIZE;
|
|
|
3827 rounded_size = string_size_ext + extra;
|
|
851
|
3828 encrypted_string = ALLOCA (rounded_size + 1);
|
|
1333
|
3829 memcpy (encrypted_string, string_ext, string_size_ext);
|
|
428
|
3830 memset (encrypted_string + rounded_size - extra, 0, extra + 1);
|
|
|
3831
|
|
1333
|
3832 key_size = min (CRYPT_KEY_SIZE, key_size_ext);
|
|
428
|
3833
|
|
851
|
3834 raw_key = ALLOCA (CRYPT_KEY_SIZE + 1);
|
|
1333
|
3835 memcpy (raw_key, key_ext, key_size);
|
|
428
|
3836 memset (raw_key + key_size, 0, (CRYPT_KEY_SIZE + 1) - key_size);
|
|
|
3837
|
|
|
3838 ecb_crypt (raw_key, encrypted_string, rounded_size,
|
|
|
3839 DES_ENCRYPT | DES_SW);
|
|
1333
|
3840 return make_ext_string (encrypted_string, rounded_size, Qbinary);
|
|
428
|
3841 }
|
|
|
3842
|
|
|
3843 DEFUN ("decrypt-string", Fdecrypt_string, 2, 2, 0, /*
|
|
|
3844 Decrypt STRING using KEY.
|
|
|
3845 */
|
|
|
3846 (string, key))
|
|
|
3847 {
|
|
1333
|
3848 Extbyte *decrypted_string, *raw_key;
|
|
|
3849 Extbyte *string_ext, *key_ext;
|
|
|
3850 Bytecount string_size_ext, key_size_ext, string_size, key_size;
|
|
428
|
3851
|
|
|
3852 CHECK_STRING (string);
|
|
|
3853 CHECK_STRING (key);
|
|
|
3854
|
|
1333
|
3855 LISP_STRING_TO_SIZED_EXTERNAL (string, string_ext, string_size_ext, Qbinary);
|
|
|
3856 LISP_STRING_TO_SIZED_EXTERNAL (key, key_ext, key_size_ext, Qbinary);
|
|
|
3857
|
|
|
3858 string_size = string_size_ext + 1;
|
|
851
|
3859 decrypted_string = ALLOCA (string_size);
|
|
1333
|
3860 memcpy (decrypted_string, string_ext, string_size);
|
|
428
|
3861 decrypted_string[string_size - 1] = '\0';
|
|
|
3862
|
|
1333
|
3863 key_size = min (CRYPT_KEY_SIZE, key_size_ext);
|
|
428
|
3864
|
|
851
|
3865 raw_key = ALLOCA (CRYPT_KEY_SIZE + 1);
|
|
1333
|
3866 memcpy (raw_key, key_ext, key_size);
|
|
428
|
3867 memset (raw_key + key_size, 0, (CRYPT_KEY_SIZE + 1) - key_size);
|
|
|
3868
|
|
|
3869
|
|
|
3870 ecb_crypt (raw_key, decrypted_string, string_size, D | DES_SW);
|
|
1333
|
3871 return make_ext_string (decrypted_string, string_size - 1, Qbinary);
|
|
428
|
3872 }
|
|
|
3873 #endif /* 0 */
|
|
|
3874
|
|
|
3875
|
|
|
3876 DEFUN ("verify-visited-file-modtime", Fverify_visited_file_modtime, 1, 1, 0, /*
|
|
444
|
3877 Return t if last mod time of BUFFER's visited file matches what BUFFER records.
|
|
428
|
3878 This means that the file has not been changed since it was visited or saved.
|
|
|
3879 */
|
|
444
|
3880 (buffer))
|
|
428
|
3881 {
|
|
442
|
3882 /* This function can call lisp; GC checked 2000-07-11 ben */
|
|
428
|
3883 struct buffer *b;
|
|
|
3884 struct stat st;
|
|
|
3885 Lisp_Object handler;
|
|
|
3886
|
|
444
|
3887 CHECK_BUFFER (buffer);
|
|
|
3888 b = XBUFFER (buffer);
|
|
428
|
3889
|
|
|
3890 if (!STRINGP (b->filename)) return Qt;
|
|
|
3891 if (b->modtime == 0) return Qt;
|
|
|
3892
|
|
|
3893 /* If the file name has special constructs in it,
|
|
|
3894 call the corresponding file handler. */
|
|
|
3895 handler = Ffind_file_name_handler (b->filename,
|
|
|
3896 Qverify_visited_file_modtime);
|
|
|
3897 if (!NILP (handler))
|
|
444
|
3898 return call2 (handler, Qverify_visited_file_modtime, buffer);
|
|
428
|
3899
|
|
771
|
3900 if (qxe_stat (XSTRING_DATA (b->filename), &st) < 0)
|
|
428
|
3901 {
|
|
|
3902 /* If the file doesn't exist now and didn't exist before,
|
|
|
3903 we say that it isn't modified, provided the error is a tame one. */
|
|
|
3904 if (errno == ENOENT || errno == EACCES || errno == ENOTDIR)
|
|
|
3905 st.st_mtime = -1;
|
|
|
3906 else
|
|
|
3907 st.st_mtime = 0;
|
|
|
3908 }
|
|
|
3909 if (st.st_mtime == b->modtime
|
|
|
3910 /* If both are positive, accept them if they are off by one second. */
|
|
|
3911 || (st.st_mtime > 0 && b->modtime > 0
|
|
|
3912 && (st.st_mtime == b->modtime + 1
|
|
|
3913 || st.st_mtime == b->modtime - 1)))
|
|
|
3914 return Qt;
|
|
|
3915 return Qnil;
|
|
|
3916 }
|
|
|
3917
|
|
|
3918 DEFUN ("clear-visited-file-modtime", Fclear_visited_file_modtime, 0, 0, 0, /*
|
|
|
3919 Clear out records of last mod time of visited file.
|
|
|
3920 Next attempt to save will certainly not complain of a discrepancy.
|
|
|
3921 */
|
|
|
3922 ())
|
|
|
3923 {
|
|
|
3924 current_buffer->modtime = 0;
|
|
|
3925 return Qnil;
|
|
|
3926 }
|
|
|
3927
|
|
|
3928 DEFUN ("visited-file-modtime", Fvisited_file_modtime, 0, 0, 0, /*
|
|
|
3929 Return the current buffer's recorded visited file modification time.
|
|
|
3930 The value is a list of the form (HIGH . LOW), like the time values
|
|
|
3931 that `file-attributes' returns.
|
|
|
3932 */
|
|
|
3933 ())
|
|
|
3934 {
|
|
|
3935 return time_to_lisp ((time_t) current_buffer->modtime);
|
|
|
3936 }
|
|
|
3937
|
|
|
3938 DEFUN ("set-visited-file-modtime", Fset_visited_file_modtime, 0, 1, 0, /*
|
|
|
3939 Update buffer's recorded modification time from the visited file's time.
|
|
|
3940 Useful if the buffer was not read from the file normally
|
|
|
3941 or if the file itself has been changed for some known benign reason.
|
|
|
3942 An argument specifies the modification time value to use
|
|
|
3943 \(instead of that of the visited file), in the form of a list
|
|
|
3944 \(HIGH . LOW) or (HIGH LOW).
|
|
|
3945 */
|
|
|
3946 (time_list))
|
|
|
3947 {
|
|
|
3948 /* This function can call lisp */
|
|
|
3949 if (!NILP (time_list))
|
|
|
3950 {
|
|
|
3951 time_t the_time;
|
|
|
3952 lisp_to_time (time_list, &the_time);
|
|
|
3953 current_buffer->modtime = (int) the_time;
|
|
|
3954 }
|
|
|
3955 else
|
|
|
3956 {
|
|
446
|
3957 Lisp_Object filename = Qnil;
|
|
428
|
3958 struct stat st;
|
|
|
3959 Lisp_Object handler;
|
|
|
3960 struct gcpro gcpro1, gcpro2, gcpro3;
|
|
|
3961
|
|
|
3962 GCPRO3 (filename, time_list, current_buffer->filename);
|
|
|
3963 filename = Fexpand_file_name (current_buffer->filename, Qnil);
|
|
|
3964
|
|
|
3965 /* If the file name has special constructs in it,
|
|
|
3966 call the corresponding file handler. */
|
|
|
3967 handler = Ffind_file_name_handler (filename, Qset_visited_file_modtime);
|
|
|
3968 UNGCPRO;
|
|
|
3969 if (!NILP (handler))
|
|
|
3970 /* The handler can find the file name the same way we did. */
|
|
|
3971 return call2 (handler, Qset_visited_file_modtime, Qnil);
|
|
771
|
3972 else if (qxe_stat (XSTRING_DATA (filename), &st) >= 0)
|
|
428
|
3973 current_buffer->modtime = st.st_mtime;
|
|
|
3974 }
|
|
|
3975
|
|
|
3976 return Qnil;
|
|
|
3977 }
|
|
|
3978
|
|
|
3979 static Lisp_Object
|
|
2286
|
3980 auto_save_error (Lisp_Object UNUSED (condition_object),
|
|
|
3981 Lisp_Object UNUSED (ignored))
|
|
428
|
3982 {
|
|
|
3983 /* This function can call lisp */
|
|
|
3984 if (gc_in_progress)
|
|
|
3985 return Qnil;
|
|
|
3986 /* Don't try printing an error message after everything is gone! */
|
|
|
3987 if (preparing_for_armageddon)
|
|
|
3988 return Qnil;
|
|
|
3989 clear_echo_area (selected_frame (), Qauto_saving, 1);
|
|
|
3990 Fding (Qt, Qauto_save_error, Qnil);
|
|
|
3991 message ("Auto-saving...error for %s", XSTRING_DATA (current_buffer->name));
|
|
|
3992 Fsleep_for (make_int (1));
|
|
|
3993 message ("Auto-saving...error!for %s", XSTRING_DATA (current_buffer->name));
|
|
|
3994 Fsleep_for (make_int (1));
|
|
|
3995 message ("Auto-saving...error for %s", XSTRING_DATA (current_buffer->name));
|
|
|
3996 Fsleep_for (make_int (1));
|
|
|
3997 return Qnil;
|
|
|
3998 }
|
|
|
3999
|
|
|
4000 static Lisp_Object
|
|
2286
|
4001 auto_save_1 (Lisp_Object UNUSED (ignored))
|
|
428
|
4002 {
|
|
|
4003 /* This function can call lisp */
|
|
|
4004 /* #### I think caller is protecting current_buffer? */
|
|
|
4005 struct stat st;
|
|
|
4006 Lisp_Object fn = current_buffer->filename;
|
|
|
4007 Lisp_Object a = current_buffer->auto_save_file_name;
|
|
|
4008
|
|
|
4009 if (!STRINGP (a))
|
|
|
4010 return (Qnil);
|
|
|
4011
|
|
|
4012 /* Get visited file's mode to become the auto save file's mode. */
|
|
|
4013 if (STRINGP (fn) &&
|
|
771
|
4014 qxe_stat (XSTRING_DATA (fn), &st) >= 0)
|
|
428
|
4015 /* But make sure we can overwrite it later! */
|
|
|
4016 auto_save_mode_bits = st.st_mode | 0600;
|
|
|
4017 else
|
|
|
4018 /* default mode for auto-save files of buffers with no file is
|
|
|
4019 readable by owner only. This may annoy some small number of
|
|
|
4020 people, but the alternative removes all privacy from email. */
|
|
|
4021 auto_save_mode_bits = 0600;
|
|
|
4022
|
|
|
4023 return
|
|
|
4024 Fwrite_region_internal (Qnil, Qnil, a, Qnil, Qlambda, Qnil,
|
|
771
|
4025 #if 1 /* #### Kyle wants it changed to not use escape-quoted. Think
|
|
|
4026 carefully about how this works. */
|
|
4266
|
4027 Qescape_quoted,
|
|
771
|
4028 #else
|
|
4266
|
4029 current_buffer->buffer_file_coding_system,
|
|
428
|
4030 #endif
|
|
4266
|
4031 Qnil);
|
|
428
|
4032 }
|
|
|
4033
|
|
|
4034 static Lisp_Object
|
|
2286
|
4035 auto_save_expand_name_error (Lisp_Object condition_object,
|
|
|
4036 Lisp_Object UNUSED (ignored))
|
|
428
|
4037 {
|
|
771
|
4038 warn_when_safe_lispobj
|
|
793
|
4039 (Qfile, Qerror,
|
|
771
|
4040 Fcons (build_msg_string ("Invalid auto-save list-file"),
|
|
|
4041 Fcons (Vauto_save_list_file_name,
|
|
|
4042 condition_object)));
|
|
428
|
4043 return Qnil;
|
|
|
4044 }
|
|
|
4045
|
|
|
4046 static Lisp_Object
|
|
|
4047 auto_save_expand_name (Lisp_Object name)
|
|
|
4048 {
|
|
|
4049 struct gcpro gcpro1;
|
|
|
4050
|
|
|
4051 /* note that caller did NOT gc protect name, so we do it. */
|
|
771
|
4052 /* [[dmoore - this might not be necessary, if condition_case_1
|
|
|
4053 protects it. but I don't think it does.]] indeed it doesn't. --ben */
|
|
428
|
4054 GCPRO1 (name);
|
|
|
4055 RETURN_UNGCPRO (Fexpand_file_name (name, Qnil));
|
|
|
4056 }
|
|
|
4057
|
|
|
4058
|
|
|
4059 static Lisp_Object
|
|
|
4060 do_auto_save_unwind (Lisp_Object fd)
|
|
|
4061 {
|
|
771
|
4062 retry_close (XINT (fd));
|
|
428
|
4063 return (fd);
|
|
|
4064 }
|
|
|
4065
|
|
|
4066 /* Fdo_auto_save() checks whether a GC is in progress when it is called,
|
|
|
4067 and if so, tries to avoid touching lisp objects.
|
|
|
4068
|
|
|
4069 The only time that Fdo_auto_save() is called while GC is in progress
|
|
2500
|
4070 is if we're going down, as a result of an ABORT() or a kill signal.
|
|
428
|
4071 It's fairly important that we generate autosave files in that case!
|
|
|
4072 */
|
|
|
4073
|
|
|
4074 DEFUN ("do-auto-save", Fdo_auto_save, 0, 2, "", /*
|
|
|
4075 Auto-save all buffers that need it.
|
|
|
4076 This is all buffers that have auto-saving enabled
|
|
|
4077 and are changed since last auto-saved.
|
|
|
4078 Auto-saving writes the buffer into a file
|
|
|
4079 so that your editing is not lost if the system crashes.
|
|
|
4080 This file is not the file you visited; that changes only when you save.
|
|
|
4081 Normally we run the normal hook `auto-save-hook' before saving.
|
|
|
4082
|
|
|
4083 Non-nil first argument means do not print any message if successful.
|
|
|
4084 Non-nil second argument means save only current buffer.
|
|
|
4085 */
|
|
|
4086 (no_message, current_only))
|
|
|
4087 {
|
|
|
4088 /* This function can call lisp */
|
|
|
4089 struct buffer *b;
|
|
|
4090 Lisp_Object tail, buf;
|
|
|
4091 int auto_saved = 0;
|
|
|
4092 int do_handled_files;
|
|
|
4093 Lisp_Object oquit = Qnil;
|
|
|
4094 Lisp_Object listfile = Qnil;
|
|
|
4095 Lisp_Object old;
|
|
|
4096 int listdesc = -1;
|
|
|
4097 int speccount = specpdl_depth ();
|
|
|
4098 struct gcpro gcpro1, gcpro2, gcpro3;
|
|
|
4099
|
|
793
|
4100 old = wrap_buffer (current_buffer);
|
|
428
|
4101 GCPRO3 (oquit, listfile, old);
|
|
|
4102 check_quit (); /* make Vquit_flag accurate */
|
|
|
4103 /* Ordinarily don't quit within this function,
|
|
|
4104 but don't make it impossible to quit (in case we get hung in I/O). */
|
|
|
4105 oquit = Vquit_flag;
|
|
|
4106 Vquit_flag = Qnil;
|
|
|
4107
|
|
|
4108 /* No further GCPRO needed, because (when it matters) all Lisp_Object
|
|
|
4109 variables point to non-strings reached from Vbuffer_alist. */
|
|
|
4110
|
|
|
4111 if (minibuf_level != 0 || preparing_for_armageddon)
|
|
|
4112 no_message = Qt;
|
|
|
4113
|
|
|
4114 run_hook (Qauto_save_hook);
|
|
|
4115
|
|
|
4116 if (STRINGP (Vauto_save_list_file_name))
|
|
|
4117 listfile = condition_case_1 (Qt,
|
|
|
4118 auto_save_expand_name,
|
|
|
4119 Vauto_save_list_file_name,
|
|
|
4120 auto_save_expand_name_error, Qnil);
|
|
|
4121
|
|
853
|
4122 internal_bind_int (&auto_saving, 1);
|
|
428
|
4123
|
|
|
4124 /* First, save all files which don't have handlers. If Emacs is
|
|
|
4125 crashing, the handlers may tweak what is causing Emacs to crash
|
|
|
4126 in the first place, and it would be a shame if Emacs failed to
|
|
|
4127 autosave perfectly ordinary files because it couldn't handle some
|
|
|
4128 ange-ftp'd file. */
|
|
|
4129 for (do_handled_files = 0; do_handled_files < 2; do_handled_files++)
|
|
|
4130 {
|
|
|
4131 for (tail = Vbuffer_alist;
|
|
|
4132 CONSP (tail);
|
|
|
4133 tail = XCDR (tail))
|
|
|
4134 {
|
|
|
4135 buf = XCDR (XCAR (tail));
|
|
|
4136 b = XBUFFER (buf);
|
|
|
4137
|
|
|
4138 if (!NILP (current_only)
|
|
|
4139 && b != current_buffer)
|
|
|
4140 continue;
|
|
|
4141
|
|
|
4142 /* Don't auto-save indirect buffers.
|
|
|
4143 The base buffer takes care of it. */
|
|
|
4144 if (b->base_buffer)
|
|
|
4145 continue;
|
|
|
4146
|
|
|
4147 /* Check for auto save enabled
|
|
|
4148 and file changed since last auto save
|
|
|
4149 and file changed since last real save. */
|
|
|
4150 if (STRINGP (b->auto_save_file_name)
|
|
|
4151 && BUF_SAVE_MODIFF (b) < BUF_MODIFF (b)
|
|
|
4152 && b->auto_save_modified < BUF_MODIFF (b)
|
|
|
4153 /* -1 means we've turned off autosaving for a while--see below. */
|
|
|
4154 && XINT (b->saved_size) >= 0
|
|
|
4155 && (do_handled_files
|
|
|
4156 || NILP (Ffind_file_name_handler (b->auto_save_file_name,
|
|
|
4157 Qwrite_region))))
|
|
|
4158 {
|
|
|
4159 EMACS_TIME before_time, after_time;
|
|
|
4160
|
|
|
4161 EMACS_GET_TIME (before_time);
|
|
|
4162 /* If we had a failure, don't try again for 20 minutes. */
|
|
|
4163 if (!preparing_for_armageddon
|
|
|
4164 && b->auto_save_failure_time >= 0
|
|
|
4165 && (EMACS_SECS (before_time) - b->auto_save_failure_time <
|
|
|
4166 1200))
|
|
|
4167 continue;
|
|
|
4168
|
|
|
4169 if (!preparing_for_armageddon &&
|
|
|
4170 (XINT (b->saved_size) * 10
|
|
|
4171 > (BUF_Z (b) - BUF_BEG (b)) * 13)
|
|
|
4172 /* A short file is likely to change a large fraction;
|
|
|
4173 spare the user annoying messages. */
|
|
|
4174 && XINT (b->saved_size) > 5000
|
|
|
4175 /* These messages are frequent and annoying for `*mail*'. */
|
|
|
4176 && !NILP (b->filename)
|
|
|
4177 && NILP (no_message)
|
|
|
4178 && disable_auto_save_when_buffer_shrinks)
|
|
|
4179 {
|
|
|
4180 /* It has shrunk too much; turn off auto-saving here.
|
|
|
4181 Unless we're about to crash, in which case auto-save it
|
|
|
4182 anyway.
|
|
|
4183 */
|
|
|
4184 message
|
|
|
4185 ("Buffer %s has shrunk a lot; auto save turned off there",
|
|
|
4186 XSTRING_DATA (b->name));
|
|
|
4187 /* Turn off auto-saving until there's a real save,
|
|
|
4188 and prevent any more warnings. */
|
|
|
4189 b->saved_size = make_int (-1);
|
|
|
4190 if (!gc_in_progress)
|
|
|
4191 Fsleep_for (make_int (1));
|
|
|
4192 continue;
|
|
|
4193 }
|
|
|
4194 set_buffer_internal (b);
|
|
|
4195 if (!auto_saved && NILP (no_message))
|
|
|
4196 {
|
|
1333
|
4197 static const Ibyte *msg = (const Ibyte *) "Auto-saving...";
|
|
428
|
4198 echo_area_message (selected_frame (), msg, Qnil,
|
|
1333
|
4199 0, qxestrlen (msg),
|
|
428
|
4200 Qauto_saving);
|
|
|
4201 }
|
|
|
4202
|
|
|
4203 /* Open the auto-save list file, if necessary.
|
|
|
4204 We only do this now so that the file only exists
|
|
|
4205 if we actually auto-saved any files. */
|
|
444
|
4206 if (!auto_saved && !inhibit_auto_save_session
|
|
|
4207 && !NILP (Vauto_save_list_file_prefix)
|
|
|
4208 && STRINGP (listfile) && listdesc < 0)
|
|
428
|
4209 {
|
|
771
|
4210 listdesc =
|
|
|
4211 qxe_open (XSTRING_DATA (listfile),
|
|
|
4212 O_WRONLY | O_TRUNC | O_CREAT | OPEN_BINARY,
|
|
|
4213 CREAT_MODE);
|
|
428
|
4214
|
|
|
4215 /* Arrange to close that file whether or not we get
|
|
|
4216 an error. */
|
|
|
4217 if (listdesc >= 0)
|
|
|
4218 record_unwind_protect (do_auto_save_unwind,
|
|
|
4219 make_int (listdesc));
|
|
|
4220 }
|
|
|
4221
|
|
|
4222 /* Record all the buffers that we are auto-saving in
|
|
|
4223 the special file that lists them. For each of
|
|
|
4224 these buffers, record visited name (if any) and
|
|
|
4225 auto save name. */
|
|
|
4226 if (listdesc >= 0)
|
|
|
4227 {
|
|
442
|
4228 const Extbyte *auto_save_file_name_ext;
|
|
665
|
4229 Bytecount auto_save_file_name_ext_len;
|
|
428
|
4230
|
|
440
|
4231 TO_EXTERNAL_FORMAT (LISP_STRING, b->auto_save_file_name,
|
|
|
4232 ALLOCA, (auto_save_file_name_ext,
|
|
|
4233 auto_save_file_name_ext_len),
|
|
771
|
4234 Qescape_quoted);
|
|
428
|
4235 if (!NILP (b->filename))
|
|
|
4236 {
|
|
442
|
4237 const Extbyte *filename_ext;
|
|
665
|
4238 Bytecount filename_ext_len;
|
|
428
|
4239
|
|
440
|
4240 TO_EXTERNAL_FORMAT (LISP_STRING, b->filename,
|
|
|
4241 ALLOCA, (filename_ext,
|
|
|
4242 filename_ext_len),
|
|
771
|
4243 Qescape_quoted);
|
|
|
4244 retry_write (listdesc, filename_ext, filename_ext_len);
|
|
428
|
4245 }
|
|
771
|
4246 retry_write (listdesc, "\n", 1);
|
|
|
4247 retry_write (listdesc, auto_save_file_name_ext,
|
|
428
|
4248 auto_save_file_name_ext_len);
|
|
771
|
4249 retry_write (listdesc, "\n", 1);
|
|
428
|
4250 }
|
|
|
4251
|
|
|
4252 /* dmoore - In a bad scenario we've set b=XBUFFER(buf)
|
|
|
4253 based on values in Vbuffer_alist. auto_save_1 may
|
|
|
4254 cause lisp handlers to run. Those handlers may kill
|
|
|
4255 the buffer and then GC. Since the buffer is killed,
|
|
|
4256 it's no longer in Vbuffer_alist so it might get reaped
|
|
|
4257 by the GC. We also need to protect tail. */
|
|
|
4258 /* #### There is probably a lot of other code which has
|
|
|
4259 pointers into buffers which may get blown away by
|
|
|
4260 handlers. */
|
|
|
4261 {
|
|
|
4262 struct gcpro ngcpro1, ngcpro2;
|
|
|
4263 NGCPRO2 (buf, tail);
|
|
|
4264 condition_case_1 (Qt,
|
|
|
4265 auto_save_1, Qnil,
|
|
|
4266 auto_save_error, Qnil);
|
|
|
4267 NUNGCPRO;
|
|
|
4268 }
|
|
|
4269 /* Handler killed our saved current-buffer! Pick any. */
|
|
|
4270 if (!BUFFER_LIVE_P (XBUFFER (old)))
|
|
793
|
4271 old = wrap_buffer (current_buffer);
|
|
428
|
4272
|
|
|
4273 set_buffer_internal (XBUFFER (old));
|
|
|
4274 auto_saved++;
|
|
|
4275
|
|
|
4276 /* Handler killed their own buffer! */
|
|
|
4277 if (!BUFFER_LIVE_P(b))
|
|
|
4278 continue;
|
|
|
4279
|
|
|
4280 b->auto_save_modified = BUF_MODIFF (b);
|
|
|
4281 b->saved_size = make_int (BUF_SIZE (b));
|
|
|
4282 EMACS_GET_TIME (after_time);
|
|
|
4283 /* If auto-save took more than 60 seconds,
|
|
|
4284 assume it was an NFS failure that got a timeout. */
|
|
|
4285 if (EMACS_SECS (after_time) - EMACS_SECS (before_time) > 60)
|
|
|
4286 b->auto_save_failure_time = EMACS_SECS (after_time);
|
|
|
4287 }
|
|
|
4288 }
|
|
|
4289 }
|
|
|
4290
|
|
|
4291 /* Prevent another auto save till enough input events come in. */
|
|
|
4292 if (auto_saved)
|
|
|
4293 record_auto_save ();
|
|
|
4294
|
|
|
4295 /* If we didn't save anything into the listfile, remove the old
|
|
|
4296 one because nothing needed to be auto-saved. Do this afterwards
|
|
|
4297 rather than before in case we get a crash attempting to autosave
|
|
|
4298 (in that case we'd still want the old one around). */
|
|
|
4299 if (listdesc < 0 && !auto_saved && STRINGP (listfile))
|
|
771
|
4300 qxe_unlink (XSTRING_DATA (listfile));
|
|
428
|
4301
|
|
|
4302 /* Show "...done" only if the echo area would otherwise be empty. */
|
|
|
4303 if (auto_saved && NILP (no_message)
|
|
|
4304 && NILP (clear_echo_area (selected_frame (), Qauto_saving, 0)))
|
|
|
4305 {
|
|
1333
|
4306 static const Ibyte *msg = (const Ibyte *)"Auto-saving...done";
|
|
428
|
4307 echo_area_message (selected_frame (), msg, Qnil, 0,
|
|
1333
|
4308 qxestrlen (msg), Qauto_saving);
|
|
428
|
4309 }
|
|
|
4310
|
|
|
4311 Vquit_flag = oquit;
|
|
|
4312
|
|
771
|
4313 RETURN_UNGCPRO (unbind_to (speccount));
|
|
428
|
4314 }
|
|
|
4315
|
|
|
4316 DEFUN ("set-buffer-auto-saved", Fset_buffer_auto_saved, 0, 0, 0, /*
|
|
|
4317 Mark current buffer as auto-saved with its current text.
|
|
|
4318 No auto-save file will be written until the buffer changes again.
|
|
|
4319 */
|
|
|
4320 ())
|
|
|
4321 {
|
|
|
4322 current_buffer->auto_save_modified = BUF_MODIFF (current_buffer);
|
|
|
4323 current_buffer->saved_size = make_int (BUF_SIZE (current_buffer));
|
|
|
4324 current_buffer->auto_save_failure_time = -1;
|
|
|
4325 return Qnil;
|
|
|
4326 }
|
|
|
4327
|
|
|
4328 DEFUN ("clear-buffer-auto-save-failure", Fclear_buffer_auto_save_failure, 0, 0, 0, /*
|
|
|
4329 Clear any record of a recent auto-save failure in the current buffer.
|
|
|
4330 */
|
|
|
4331 ())
|
|
|
4332 {
|
|
|
4333 current_buffer->auto_save_failure_time = -1;
|
|
|
4334 return Qnil;
|
|
|
4335 }
|
|
|
4336
|
|
|
4337 DEFUN ("recent-auto-save-p", Frecent_auto_save_p, 0, 0, 0, /*
|
|
|
4338 Return t if buffer has been auto-saved since last read in or saved.
|
|
|
4339 */
|
|
|
4340 ())
|
|
|
4341 {
|
|
|
4342 return (BUF_SAVE_MODIFF (current_buffer) <
|
|
|
4343 current_buffer->auto_save_modified) ? Qt : Qnil;
|
|
|
4344 }
|
|
|
4345
|
|
|
4346
|
|
|
4347 /************************************************************************/
|
|
|
4348 /* initialization */
|
|
|
4349 /************************************************************************/
|
|
|
4350
|
|
|
4351 void
|
|
|
4352 syms_of_fileio (void)
|
|
|
4353 {
|
|
563
|
4354 DEFSYMBOL (Qexpand_file_name);
|
|
|
4355 DEFSYMBOL (Qfile_truename);
|
|
|
4356 DEFSYMBOL (Qsubstitute_in_file_name);
|
|
|
4357 DEFSYMBOL (Qdirectory_file_name);
|
|
|
4358 DEFSYMBOL (Qfile_name_directory);
|
|
|
4359 DEFSYMBOL (Qfile_name_nondirectory);
|
|
996
|
4360 DEFSYMBOL (Qfile_name_sans_extension);
|
|
563
|
4361 DEFSYMBOL (Qunhandled_file_name_directory);
|
|
|
4362 DEFSYMBOL (Qfile_name_as_directory);
|
|
|
4363 DEFSYMBOL (Qcopy_file);
|
|
|
4364 DEFSYMBOL (Qmake_directory_internal);
|
|
|
4365 DEFSYMBOL (Qdelete_directory);
|
|
|
4366 DEFSYMBOL (Qdelete_file);
|
|
|
4367 DEFSYMBOL (Qrename_file);
|
|
|
4368 DEFSYMBOL (Qadd_name_to_file);
|
|
|
4369 DEFSYMBOL (Qmake_symbolic_link);
|
|
844
|
4370 DEFSYMBOL (Qmake_temp_name);
|
|
563
|
4371 DEFSYMBOL (Qfile_exists_p);
|
|
|
4372 DEFSYMBOL (Qfile_executable_p);
|
|
|
4373 DEFSYMBOL (Qfile_readable_p);
|
|
|
4374 DEFSYMBOL (Qfile_symlink_p);
|
|
|
4375 DEFSYMBOL (Qfile_writable_p);
|
|
|
4376 DEFSYMBOL (Qfile_directory_p);
|
|
|
4377 DEFSYMBOL (Qfile_regular_p);
|
|
|
4378 DEFSYMBOL (Qfile_accessible_directory_p);
|
|
|
4379 DEFSYMBOL (Qfile_modes);
|
|
|
4380 DEFSYMBOL (Qset_file_modes);
|
|
|
4381 DEFSYMBOL (Qfile_newer_than_file_p);
|
|
|
4382 DEFSYMBOL (Qinsert_file_contents);
|
|
|
4383 DEFSYMBOL (Qwrite_region);
|
|
|
4384 DEFSYMBOL (Qverify_visited_file_modtime);
|
|
|
4385 DEFSYMBOL (Qset_visited_file_modtime);
|
|
|
4386 DEFSYMBOL (Qcar_less_than_car); /* Vomitous! */
|
|
4266
|
4387 DEFSYMBOL (Qexcl);
|
|
563
|
4388
|
|
|
4389 DEFSYMBOL (Qauto_save_hook);
|
|
|
4390 DEFSYMBOL (Qauto_save_error);
|
|
|
4391 DEFSYMBOL (Qauto_saving);
|
|
|
4392
|
|
|
4393 DEFSYMBOL (Qformat_decode);
|
|
|
4394 DEFSYMBOL (Qformat_annotate_function);
|
|
|
4395
|
|
|
4396 DEFSYMBOL (Qcompute_buffer_file_truename);
|
|
|
4397
|
|
442
|
4398 DEFERROR_STANDARD (Qfile_already_exists, Qfile_error);
|
|
428
|
4399
|
|
|
4400 DEFSUBR (Ffind_file_name_handler);
|
|
|
4401
|
|
|
4402 DEFSUBR (Ffile_name_directory);
|
|
|
4403 DEFSUBR (Ffile_name_nondirectory);
|
|
|
4404 DEFSUBR (Funhandled_file_name_directory);
|
|
|
4405 DEFSUBR (Ffile_name_as_directory);
|
|
|
4406 DEFSUBR (Fdirectory_file_name);
|
|
|
4407 DEFSUBR (Fmake_temp_name);
|
|
|
4408 DEFSUBR (Fexpand_file_name);
|
|
|
4409 DEFSUBR (Ffile_truename);
|
|
|
4410 DEFSUBR (Fsubstitute_in_file_name);
|
|
|
4411 DEFSUBR (Fcopy_file);
|
|
|
4412 DEFSUBR (Fmake_directory_internal);
|
|
|
4413 DEFSUBR (Fdelete_directory);
|
|
|
4414 DEFSUBR (Fdelete_file);
|
|
|
4415 DEFSUBR (Frename_file);
|
|
|
4416 DEFSUBR (Fadd_name_to_file);
|
|
|
4417 DEFSUBR (Fmake_symbolic_link);
|
|
|
4418 #ifdef HPUX_NET
|
|
|
4419 DEFSUBR (Fsysnetunam);
|
|
|
4420 #endif /* HPUX_NET */
|
|
|
4421 DEFSUBR (Ffile_name_absolute_p);
|
|
|
4422 DEFSUBR (Ffile_exists_p);
|
|
|
4423 DEFSUBR (Ffile_executable_p);
|
|
|
4424 DEFSUBR (Ffile_readable_p);
|
|
|
4425 DEFSUBR (Ffile_writable_p);
|
|
|
4426 DEFSUBR (Ffile_symlink_p);
|
|
|
4427 DEFSUBR (Ffile_directory_p);
|
|
|
4428 DEFSUBR (Ffile_accessible_directory_p);
|
|
|
4429 DEFSUBR (Ffile_regular_p);
|
|
|
4430 DEFSUBR (Ffile_modes);
|
|
|
4431 DEFSUBR (Fset_file_modes);
|
|
|
4432 DEFSUBR (Fset_default_file_modes);
|
|
|
4433 DEFSUBR (Fdefault_file_modes);
|
|
|
4434 DEFSUBR (Funix_sync);
|
|
|
4435 DEFSUBR (Ffile_newer_than_file_p);
|
|
|
4436 DEFSUBR (Finsert_file_contents_internal);
|
|
|
4437 DEFSUBR (Fwrite_region_internal);
|
|
|
4438 DEFSUBR (Fcar_less_than_car); /* Vomitous! */
|
|
|
4439 DEFSUBR (Fcdr_less_than_cdr); /* Yeah oh yeah bucko .... */
|
|
|
4440 #if 0
|
|
|
4441 DEFSUBR (Fencrypt_string);
|
|
|
4442 DEFSUBR (Fdecrypt_string);
|
|
|
4443 #endif
|
|
|
4444 DEFSUBR (Fverify_visited_file_modtime);
|
|
|
4445 DEFSUBR (Fclear_visited_file_modtime);
|
|
|
4446 DEFSUBR (Fvisited_file_modtime);
|
|
|
4447 DEFSUBR (Fset_visited_file_modtime);
|
|
|
4448
|
|
|
4449 DEFSUBR (Fdo_auto_save);
|
|
|
4450 DEFSUBR (Fset_buffer_auto_saved);
|
|
|
4451 DEFSUBR (Fclear_buffer_auto_save_failure);
|
|
|
4452 DEFSUBR (Frecent_auto_save_p);
|
|
|
4453 }
|
|
|
4454
|
|
|
4455 void
|
|
|
4456 vars_of_fileio (void)
|
|
|
4457 {
|
|
2526
|
4458 QSin_expand_file_name =
|
|
|
4459 build_msg_string ("(in expand-file-name)");
|
|
|
4460 staticpro (&QSin_expand_file_name);
|
|
|
4461
|
|
428
|
4462 DEFVAR_LISP ("auto-save-file-format", &Vauto_save_file_format /*
|
|
|
4463 *Format in which to write auto-save files.
|
|
|
4464 Should be a list of symbols naming formats that are defined in `format-alist'.
|
|
|
4465 If it is t, which is the default, auto-save files are written in the
|
|
|
4466 same format as a regular save would use.
|
|
|
4467 */ );
|
|
|
4468 Vauto_save_file_format = Qt;
|
|
|
4469
|
|
|
4470 DEFVAR_LISP ("file-name-handler-alist", &Vfile_name_handler_alist /*
|
|
|
4471 *Alist of elements (REGEXP . HANDLER) for file names handled specially.
|
|
|
4472 If a file name matches REGEXP, then all I/O on that file is done by calling
|
|
|
4473 HANDLER.
|
|
|
4474
|
|
|
4475 The first argument given to HANDLER is the name of the I/O primitive
|
|
|
4476 to be handled; the remaining arguments are the arguments that were
|
|
|
4477 passed to that primitive. For example, if you do
|
|
|
4478 (file-exists-p FILENAME)
|
|
|
4479 and FILENAME is handled by HANDLER, then HANDLER is called like this:
|
|
|
4480 (funcall HANDLER 'file-exists-p FILENAME)
|
|
|
4481 The function `find-file-name-handler' checks this list for a handler
|
|
|
4482 for its argument.
|
|
|
4483 */ );
|
|
|
4484 Vfile_name_handler_alist = Qnil;
|
|
|
4485
|
|
|
4486 DEFVAR_LISP ("after-insert-file-functions", &Vafter_insert_file_functions /*
|
|
|
4487 A list of functions to be called at the end of `insert-file-contents'.
|
|
|
4488 Each is passed one argument, the number of bytes inserted. It should return
|
|
|
4489 the new byte count, and leave point the same. If `insert-file-contents' is
|
|
|
4490 intercepted by a handler from `file-name-handler-alist', that handler is
|
|
|
4491 responsible for calling the after-insert-file-functions if appropriate.
|
|
|
4492 */ );
|
|
|
4493 Vafter_insert_file_functions = Qnil;
|
|
|
4494
|
|
|
4495 DEFVAR_LISP ("write-region-annotate-functions",
|
|
|
4496 &Vwrite_region_annotate_functions /*
|
|
|
4497 A list of functions to be called at the start of `write-region'.
|
|
|
4498 Each is passed two arguments, START and END, as for `write-region'.
|
|
|
4499 It should return a list of pairs (POSITION . STRING) of strings to be
|
|
|
4500 effectively inserted at the specified positions of the file being written
|
|
|
4501 \(1 means to insert before the first byte written). The POSITIONs must be
|
|
|
4502 sorted into increasing order. If there are several functions in the list,
|
|
|
4503 the several lists are merged destructively.
|
|
|
4504 */ );
|
|
|
4505 Vwrite_region_annotate_functions = Qnil;
|
|
|
4506
|
|
|
4507 DEFVAR_LISP ("write-region-annotations-so-far",
|
|
|
4508 &Vwrite_region_annotations_so_far /*
|
|
|
4509 When an annotation function is called, this holds the previous annotations.
|
|
|
4510 These are the annotations made by other annotation functions
|
|
|
4511 that were already called. See also `write-region-annotate-functions'.
|
|
|
4512 */ );
|
|
|
4513 Vwrite_region_annotations_so_far = Qnil;
|
|
|
4514
|
|
|
4515 DEFVAR_LISP ("inhibit-file-name-handlers", &Vinhibit_file_name_handlers /*
|
|
|
4516 A list of file name handlers that temporarily should not be used.
|
|
|
4517 This applies only to the operation `inhibit-file-name-operation'.
|
|
|
4518 */ );
|
|
|
4519 Vinhibit_file_name_handlers = Qnil;
|
|
|
4520
|
|
|
4521 DEFVAR_LISP ("inhibit-file-name-operation", &Vinhibit_file_name_operation /*
|
|
|
4522 The operation for which `inhibit-file-name-handlers' is applicable.
|
|
|
4523 */ );
|
|
|
4524 Vinhibit_file_name_operation = Qnil;
|
|
|
4525
|
|
|
4526 DEFVAR_LISP ("auto-save-list-file-name", &Vauto_save_list_file_name /*
|
|
|
4527 File name in which we write a list of all auto save file names.
|
|
|
4528 */ );
|
|
|
4529 Vauto_save_list_file_name = Qnil;
|
|
|
4530
|
|
444
|
4531 DEFVAR_LISP ("auto-save-list-file-prefix", &Vauto_save_list_file_prefix /*
|
|
|
4532 Prefix for generating auto-save-list-file-name.
|
|
|
4533 Emacs's pid and the system name will be appended to
|
|
|
4534 this prefix to create a unique file name.
|
|
|
4535 */ );
|
|
|
4536 Vauto_save_list_file_prefix = build_string ("~/.saves-");
|
|
|
4537
|
|
|
4538 DEFVAR_BOOL ("inhibit-auto-save-session", &inhibit_auto_save_session /*
|
|
|
4539 When non-nil, inhibit auto save list file creation.
|
|
|
4540 */ );
|
|
|
4541 inhibit_auto_save_session = 0;
|
|
|
4542
|
|
428
|
4543 DEFVAR_BOOL ("disable-auto-save-when-buffer-shrinks",
|
|
|
4544 &disable_auto_save_when_buffer_shrinks /*
|
|
|
4545 If non-nil, auto-saving is disabled when a buffer shrinks too much.
|
|
|
4546 This is to prevent you from losing your edits if you accidentally
|
|
|
4547 delete a large chunk of the buffer and don't notice it until too late.
|
|
|
4548 Saving the buffer normally turns auto-save back on.
|
|
|
4549 */ );
|
|
|
4550 disable_auto_save_when_buffer_shrinks = 1;
|
|
|
4551
|
|
|
4552 DEFVAR_LISP ("directory-sep-char", &Vdirectory_sep_char /*
|
|
|
4553 Directory separator character for built-in functions that return file names.
|
|
|
4554 The value should be either ?/ or ?\\ (any other value is treated as ?\\).
|
|
|
4555 This variable affects the built-in functions only on Windows,
|
|
|
4556 on other platforms, it is initialized so that Lisp code can find out
|
|
|
4557 what the normal separator is.
|
|
|
4558 */ );
|
|
771
|
4559 Vdirectory_sep_char = make_char (DEFAULT_DIRECTORY_SEP);
|
|
428
|
4560 }
|
|
442
|
4561
|
|
|
4562 void
|
|
|
4563 reinit_vars_of_fileio (void)
|
|
|
4564 {
|
|
|
4565 /* We want temp_name_rand to be initialized to a value likely to be
|
|
|
4566 unique to the process, not to the executable. The danger is that
|
|
|
4567 two different XEmacs processes using the same binary on different
|
|
|
4568 machines creating temp files in the same directory will be
|
|
|
4569 unlucky enough to have the same pid. If we randomize using
|
|
|
4570 process startup time, then in practice they will be unlikely to
|
|
|
4571 collide. We use the microseconds field so that scripts that start
|
|
|
4572 simultaneous XEmacs processes on multiple machines will have less
|
|
|
4573 chance of collision. */
|
|
|
4574 {
|
|
|
4575 EMACS_TIME thyme;
|
|
|
4576
|
|
|
4577 EMACS_GET_TIME (thyme);
|
|
|
4578 temp_name_rand = (unsigned int) (EMACS_SECS (thyme) ^ EMACS_USECS (thyme));
|
|
|
4579 }
|
|
|
4580 }
|
