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428
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1 /* File IO for XEmacs.
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2 Copyright (C) 1985-1988, 1992-1995 Free Software Foundation, Inc.
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1333
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3 Copyright (C) 1996, 2001, 2002, 2003 Ben Wing.
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428
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4
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5 This file is part of XEmacs.
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6
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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
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9 Free Software Foundation; either version 2, or (at your option) any
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10 later version.
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11
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12 XEmacs is distributed in the hope that it will be useful, but WITHOUT
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13 ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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14 FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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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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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.) */
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26 /* Mule-ized completely except for the #if 0-code including decrypt-string
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27 and encrypt-string. --ben 7-2-00 */
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1333
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28 /* #if 0-code Mule-ized, 2-22-03. --ben */
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771
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29
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428
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30
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31 #include <config.h>
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32 #include "lisp.h"
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33
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34 #include "buffer.h"
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800
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35 #include "device.h"
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428
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36 #include "events.h"
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800
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37 #include "file-coding.h"
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428
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38 #include "frame.h"
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39 #include "insdel.h"
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40 #include "lstream.h"
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872
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41 #include "process.h"
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428
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42 #include "redisplay.h"
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43 #include "sysdep.h"
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872
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44 #include "window-impl.h"
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771
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45
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428
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46 #include "sysfile.h"
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47 #include "sysproc.h"
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48 #include "syspwd.h"
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49 #include "systime.h"
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50 #include "sysdir.h"
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51
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52 #ifdef HPUX
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53 #include <netio.h>
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|
54 #ifdef HPUX_PRE_8_0
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55 #include <errnet.h>
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|
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56 #endif /* HPUX_PRE_8_0 */
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|
|
57 #endif /* HPUX */
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58
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1315
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59 #ifdef WIN32_ANY
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657
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60 #define WIN32_FILENAMES
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771
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61 #include "syswindows.h"
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428
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62 #define IS_DRIVE(x) isalpha (x)
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63 /* Need to lower-case the drive letter, or else expanded
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64 filenames will sometimes compare inequal, because
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65 `expand-file-name' doesn't always down-case the drive letter. */
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66 #define DRIVE_LETTER(x) tolower (x)
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657
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67 #endif /* WIN32_NATIVE || CYGWIN */
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428
|
68
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69 int lisp_to_time (Lisp_Object, time_t *);
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70 Lisp_Object time_to_lisp (time_t);
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71
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72 /* Nonzero during writing of auto-save files */
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73 static int auto_saving;
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74
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75 /* Set by auto_save_1 to mode of original file so Fwrite_region_internal
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76 will create a new file with the same mode as the original */
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77 static int auto_save_mode_bits;
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78
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79 /* Alist of elements (REGEXP . HANDLER) for file names
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80 whose I/O is done with a special handler. */
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81 Lisp_Object Vfile_name_handler_alist;
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82
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83 /* Format for auto-save files */
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84 Lisp_Object Vauto_save_file_format;
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85
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86 /* Lisp functions for translating file formats */
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87 Lisp_Object Qformat_decode, Qformat_annotate_function;
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88
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89 /* Functions to be called to process text properties in inserted file. */
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90 Lisp_Object Vafter_insert_file_functions;
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91
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92 /* Functions to be called to create text property annotations for file. */
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93 Lisp_Object Vwrite_region_annotate_functions;
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94
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95 /* During build_annotations, each time an annotation function is called,
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96 this holds the annotations made by the previous functions. */
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97 Lisp_Object Vwrite_region_annotations_so_far;
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98
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99 /* File name in which we write a list of all our auto save files. */
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100 Lisp_Object Vauto_save_list_file_name;
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101
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444
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102 /* Prefix used to construct Vauto_save_list_file_name. */
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103 Lisp_Object Vauto_save_list_file_prefix;
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104
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105 /* When non-nil, it prevents auto-save list file creation. */
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106 int inhibit_auto_save_session;
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107
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428
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108 int disable_auto_save_when_buffer_shrinks;
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109
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110 Lisp_Object Vdirectory_sep_char;
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111
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112 /* These variables describe handlers that have "already" had a chance
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113 to handle the current operation.
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114
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115 Vinhibit_file_name_handlers is a list of file name handlers.
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116 Vinhibit_file_name_operation is the operation being handled.
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117 If we try to handle that operation, we ignore those handlers. */
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118
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119 static Lisp_Object Vinhibit_file_name_handlers;
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120 static Lisp_Object Vinhibit_file_name_operation;
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121
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563
|
122 Lisp_Object Qfile_already_exists;
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428
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123
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124 Lisp_Object Qauto_save_hook;
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125 Lisp_Object Qauto_save_error;
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126 Lisp_Object Qauto_saving;
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127
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128 Lisp_Object Qcar_less_than_car;
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129
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130 Lisp_Object Qcompute_buffer_file_truename;
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131
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132 EXFUN (Frunning_temacs_p, 0);
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133
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563
|
134 /* DATA can be anything acceptable to signal_error ().
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135 */
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136
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137 DOESNT_RETURN
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138 report_file_type_error (Lisp_Object errtype, Lisp_Object oserrmess,
|
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867
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139 const CIbyte *string, Lisp_Object data)
|
|
563
|
140 {
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|
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141 struct gcpro gcpro1;
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142 Lisp_Object errdata = build_error_data (NULL, data);
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143
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|
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144 GCPRO1 (errdata);
|
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771
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145 errdata = Fcons (build_msg_string (string),
|
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563
|
146 Fcons (oserrmess, errdata));
|
|
|
147 signal_error_1 (errtype, errdata);
|
|
801
|
148 /* UNGCPRO; not reached */
|
|
563
|
149 }
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|
|
150
|
|
|
151 DOESNT_RETURN
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|
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152 report_error_with_errno (Lisp_Object errtype,
|
|
867
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153 const CIbyte *string, Lisp_Object data)
|
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563
|
154 {
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|
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155 report_file_type_error (errtype, lisp_strerror (errno), string, data);
|
|
|
156 }
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|
|
157
|
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428
|
158 /* signal a file error when errno contains a meaningful value. */
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|
|
159
|
|
|
160 DOESNT_RETURN
|
|
867
|
161 report_file_error (const CIbyte *string, Lisp_Object data)
|
|
428
|
162 {
|
|
563
|
163 report_error_with_errno (Qfile_error, string, data);
|
|
428
|
164 }
|
|
|
165
|
|
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166
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|
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167 /* Just like strerror(3), except return a lisp string instead of char *.
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168 The string needs to be converted since it may be localized.
|
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771
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169 */
|
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428
|
170 Lisp_Object
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171 lisp_strerror (int errnum)
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|
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172 {
|
|
771
|
173 Extbyte *ret = strerror (errnum);
|
|
|
174 if (!ret)
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|
|
175 {
|
|
867
|
176 Ibyte ffff[99];
|
|
771
|
177 qxesprintf (ffff, "Unknown error %d", errnum);
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|
|
178 return build_intstring (ffff);
|
|
|
179 }
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|
|
180 return build_ext_string (ret, Qstrerror_encoding);
|
|
428
|
181 }
|
|
|
182
|
|
|
183 static Lisp_Object
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184 close_file_unwind (Lisp_Object fd)
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|
|
185 {
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|
|
186 if (CONSP (fd))
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|
|
187 {
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|
|
188 if (INTP (XCAR (fd)))
|
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771
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189 retry_close (XINT (XCAR (fd)));
|
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428
|
190
|
|
853
|
191 free_cons (fd);
|
|
428
|
192 }
|
|
|
193 else
|
|
771
|
194 retry_close (XINT (fd));
|
|
428
|
195
|
|
|
196 return Qnil;
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|
|
197 }
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|
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198
|
|
|
199 static Lisp_Object
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|
|
200 delete_stream_unwind (Lisp_Object stream)
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|
|
201 {
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|
|
202 Lstream_delete (XLSTREAM (stream));
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|
|
203 return Qnil;
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|
|
204 }
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205
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|
|
206 /* Restore point, having saved it as a marker. */
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|
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207
|
|
|
208 static Lisp_Object
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|
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209 restore_point_unwind (Lisp_Object point_marker)
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|
|
210 {
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|
|
211 BUF_SET_PT (current_buffer, marker_position (point_marker));
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|
|
212 return Fset_marker (point_marker, Qnil, Qnil);
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|
|
213 }
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|
|
214
|
|
|
215
|
|
|
216 Lisp_Object Qexpand_file_name;
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|
|
217 Lisp_Object Qfile_truename;
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|
|
218 Lisp_Object Qsubstitute_in_file_name;
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|
|
219 Lisp_Object Qdirectory_file_name;
|
|
|
220 Lisp_Object Qfile_name_directory;
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|
|
221 Lisp_Object Qfile_name_nondirectory;
|
|
996
|
222 Lisp_Object Qfile_name_sans_extension;
|
|
428
|
223 Lisp_Object Qunhandled_file_name_directory;
|
|
|
224 Lisp_Object Qfile_name_as_directory;
|
|
|
225 Lisp_Object Qcopy_file;
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|
226 Lisp_Object Qmake_directory_internal;
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|
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227 Lisp_Object Qdelete_directory;
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|
|
228 Lisp_Object Qdelete_file;
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|
|
229 Lisp_Object Qrename_file;
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|
|
230 Lisp_Object Qadd_name_to_file;
|
|
|
231 Lisp_Object Qmake_symbolic_link;
|
|
844
|
232 Lisp_Object Qmake_temp_name;
|
|
428
|
233 Lisp_Object Qfile_exists_p;
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|
|
234 Lisp_Object Qfile_executable_p;
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|
|
235 Lisp_Object Qfile_readable_p;
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|
|
236 Lisp_Object Qfile_symlink_p;
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|
|
237 Lisp_Object Qfile_writable_p;
|
|
|
238 Lisp_Object Qfile_directory_p;
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|
|
239 Lisp_Object Qfile_regular_p;
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|
|
240 Lisp_Object Qfile_accessible_directory_p;
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|
|
241 Lisp_Object Qfile_modes;
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|
|
242 Lisp_Object Qset_file_modes;
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|
|
243 Lisp_Object Qfile_newer_than_file_p;
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|
|
244 Lisp_Object Qinsert_file_contents;
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|
|
245 Lisp_Object Qwrite_region;
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|
|
246 Lisp_Object Qverify_visited_file_modtime;
|
|
|
247 Lisp_Object Qset_visited_file_modtime;
|
|
|
248
|
|
|
249 /* If FILENAME is handled specially on account of its syntax,
|
|
|
250 return its handler function. Otherwise, return nil. */
|
|
|
251
|
|
|
252 DEFUN ("find-file-name-handler", Ffind_file_name_handler, 1, 2, 0, /*
|
|
|
253 Return FILENAME's handler function for OPERATION, if it has one.
|
|
|
254 Otherwise, return nil.
|
|
|
255 A file name is handled if one of the regular expressions in
|
|
|
256 `file-name-handler-alist' matches it.
|
|
|
257
|
|
|
258 If OPERATION equals `inhibit-file-name-operation', then we ignore
|
|
|
259 any handlers that are members of `inhibit-file-name-handlers',
|
|
|
260 but we still do run any other handlers. This lets handlers
|
|
|
261 use the standard functions without calling themselves recursively.
|
|
751
|
262
|
|
|
263 Otherwise, OPERATION is the name of a funcall'able function.
|
|
428
|
264 */
|
|
|
265 (filename, operation))
|
|
|
266 {
|
|
|
267 /* This function does not GC */
|
|
|
268 /* This function can be called during GC */
|
|
|
269 /* This function must not munge the match data. */
|
|
|
270 Lisp_Object chain, inhibited_handlers;
|
|
|
271
|
|
|
272 CHECK_STRING (filename);
|
|
|
273
|
|
|
274 if (EQ (operation, Vinhibit_file_name_operation))
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|
|
275 inhibited_handlers = Vinhibit_file_name_handlers;
|
|
|
276 else
|
|
|
277 inhibited_handlers = Qnil;
|
|
|
278
|
|
|
279 EXTERNAL_LIST_LOOP (chain, Vfile_name_handler_alist)
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|
|
280 {
|
|
|
281 Lisp_Object elt = XCAR (chain);
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|
|
282 if (CONSP (elt))
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|
|
283 {
|
|
|
284 Lisp_Object string = XCAR (elt);
|
|
|
285 if (STRINGP (string)
|
|
|
286 && (fast_lisp_string_match (string, filename) >= 0))
|
|
|
287 {
|
|
|
288 Lisp_Object handler = XCDR (elt);
|
|
|
289 if (NILP (Fmemq (handler, inhibited_handlers)))
|
|
|
290 return handler;
|
|
|
291 }
|
|
|
292 }
|
|
|
293 QUIT;
|
|
|
294 }
|
|
|
295 return Qnil;
|
|
|
296 }
|
|
|
297
|
|
|
298 static Lisp_Object
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|
|
299 call2_check_string (Lisp_Object fn, Lisp_Object arg0, Lisp_Object arg1)
|
|
|
300 {
|
|
|
301 /* This function can call lisp */
|
|
|
302 Lisp_Object result = call2 (fn, arg0, arg1);
|
|
|
303 CHECK_STRING (result);
|
|
|
304 return result;
|
|
|
305 }
|
|
|
306
|
|
|
307 static Lisp_Object
|
|
|
308 call2_check_string_or_nil (Lisp_Object fn, Lisp_Object arg0, Lisp_Object arg1)
|
|
|
309 {
|
|
|
310 /* This function can call lisp */
|
|
|
311 Lisp_Object result = call2 (fn, arg0, arg1);
|
|
|
312 if (!NILP (result))
|
|
|
313 CHECK_STRING (result);
|
|
|
314 return result;
|
|
|
315 }
|
|
|
316
|
|
|
317 static Lisp_Object
|
|
|
318 call3_check_string (Lisp_Object fn, Lisp_Object arg0,
|
|
|
319 Lisp_Object arg1, Lisp_Object arg2)
|
|
|
320 {
|
|
|
321 /* This function can call lisp */
|
|
|
322 Lisp_Object result = call3 (fn, arg0, arg1, arg2);
|
|
|
323 CHECK_STRING (result);
|
|
|
324 return result;
|
|
|
325 }
|
|
|
326
|
|
|
327
|
|
|
328 DEFUN ("file-name-directory", Ffile_name_directory, 1, 1, 0, /*
|
|
444
|
329 Return the directory component in file name FILENAME.
|
|
|
330 Return nil if FILENAME does not include a directory.
|
|
428
|
331 Otherwise return a directory spec.
|
|
|
332 Given a Unix syntax file name, returns a string ending in slash.
|
|
|
333 */
|
|
444
|
334 (filename))
|
|
428
|
335 {
|
|
442
|
336 /* This function can GC. GC checked 2000-07-28 ben */
|
|
771
|
337 /* This function synched with Emacs 21.0.103. */
|
|
867
|
338 Ibyte *beg;
|
|
|
339 Ibyte *p;
|
|
428
|
340 Lisp_Object handler;
|
|
|
341
|
|
444
|
342 CHECK_STRING (filename);
|
|
428
|
343
|
|
|
344 /* If the file name has special constructs in it,
|
|
|
345 call the corresponding file handler. */
|
|
444
|
346 handler = Ffind_file_name_handler (filename, Qfile_name_directory);
|
|
428
|
347 if (!NILP (handler))
|
|
444
|
348 return call2_check_string_or_nil (handler, Qfile_name_directory, filename);
|
|
428
|
349
|
|
|
350 #ifdef FILE_SYSTEM_CASE
|
|
444
|
351 filename = FILE_SYSTEM_CASE (filename);
|
|
428
|
352 #endif
|
|
444
|
353 beg = XSTRING_DATA (filename);
|
|
771
|
354 /* XEmacs: no need to alloca-copy here */
|
|
444
|
355 p = beg + XSTRING_LENGTH (filename);
|
|
428
|
356
|
|
771
|
357 while (p != beg && !IS_DIRECTORY_SEP (p[-1])
|
|
657
|
358 #ifdef WIN32_FILENAMES
|
|
771
|
359 /* only recognise drive specifier at the beginning */
|
|
|
360 && !(p[-1] == ':'
|
|
|
361 /* handle the "/:d:foo" and "/:foo" cases correctly */
|
|
|
362 && ((p == beg + 2 && !IS_DIRECTORY_SEP (*beg))
|
|
|
363 || (p == beg + 4 && IS_DIRECTORY_SEP (*beg))))
|
|
428
|
364 #endif
|
|
771
|
365 ) p--;
|
|
428
|
366
|
|
|
367 if (p == beg)
|
|
|
368 return Qnil;
|
|
442
|
369 #ifdef WIN32_NATIVE
|
|
428
|
370 /* Expansion of "c:" to drive and default directory. */
|
|
771
|
371 if (p[-1] == ':')
|
|
428
|
372 {
|
|
867
|
373 Ibyte *res;
|
|
|
374 Ibyte *wd = mswindows_getdcwd (toupper (*beg) - 'A' + 1);
|
|
771
|
375
|
|
867
|
376 res = alloca_array (Ibyte,
|
|
771
|
377 (wd ? qxestrlen (wd) : 0) + 10); /* go overboard */
|
|
1116
|
378 res[0] = '\0';
|
|
771
|
379 if (p == beg + 4 && IS_DIRECTORY_SEP (*beg) && beg[1] == ':')
|
|
|
380 {
|
|
|
381 qxestrncpy (res, beg, 2);
|
|
|
382 beg += 2;
|
|
1116
|
383 res[2] = '\0';
|
|
771
|
384 }
|
|
|
385
|
|
|
386 if (wd)
|
|
428
|
387 {
|
|
771
|
388 qxestrcat (res, wd);
|
|
|
389 if (!IS_DIRECTORY_SEP (res[qxestrlen (res) - 1]))
|
|
867
|
390 qxestrcat (res, (Ibyte *) "/");
|
|
428
|
391 beg = res;
|
|
771
|
392 p = beg + qxestrlen (beg);
|
|
428
|
393 }
|
|
771
|
394 if (wd)
|
|
|
395 xfree (wd);
|
|
428
|
396 }
|
|
771
|
397
|
|
|
398 #if 0 /* No! This screws up efs, which calls file-name-directory on URL's
|
|
|
399 and expects the slashes to be left alone. This is here because of
|
|
|
400 an analogous call in FSF 21. */
|
|
|
401 {
|
|
|
402 Bytecount len = p - beg;
|
|
867
|
403 Ibyte *newbeg = alloca_ibytes (len + 1);
|
|
771
|
404 Lisp_Object return_me;
|
|
|
405
|
|
|
406 qxestrncpy (newbeg, beg, len);
|
|
|
407 newbeg[len] = '\0';
|
|
|
408 newbeg = mswindows_canonicalize_filename (newbeg);
|
|
|
409 return_me = build_intstring (newbeg);
|
|
|
410 xfree (newbeg);
|
|
|
411 return return_me;
|
|
|
412 }
|
|
|
413 #endif
|
|
|
414 #endif /* not WIN32_NATIVE */
|
|
428
|
415 return make_string (beg, p - beg);
|
|
|
416 }
|
|
|
417
|
|
|
418 DEFUN ("file-name-nondirectory", Ffile_name_nondirectory, 1, 1, 0, /*
|
|
444
|
419 Return file name FILENAME sans its directory.
|
|
428
|
420 For example, in a Unix-syntax file name,
|
|
|
421 this is everything after the last slash,
|
|
|
422 or the entire name if it contains no slash.
|
|
|
423 */
|
|
444
|
424 (filename))
|
|
428
|
425 {
|
|
442
|
426 /* This function can GC. GC checked 2000-07-28 ben */
|
|
771
|
427 /* This function synched with Emacs 21.0.103. */
|
|
867
|
428 Ibyte *beg, *p, *end;
|
|
428
|
429 Lisp_Object handler;
|
|
|
430
|
|
444
|
431 CHECK_STRING (filename);
|
|
428
|
432
|
|
|
433 /* If the file name has special constructs in it,
|
|
|
434 call the corresponding file handler. */
|
|
444
|
435 handler = Ffind_file_name_handler (filename, Qfile_name_nondirectory);
|
|
428
|
436 if (!NILP (handler))
|
|
444
|
437 return call2_check_string (handler, Qfile_name_nondirectory, filename);
|
|
|
438
|
|
|
439 beg = XSTRING_DATA (filename);
|
|
|
440 end = p = beg + XSTRING_LENGTH (filename);
|
|
428
|
441
|
|
771
|
442 while (p != beg && !IS_DIRECTORY_SEP (p[-1])
|
|
657
|
443 #ifdef WIN32_FILENAMES
|
|
771
|
444 /* only recognise drive specifier at beginning */
|
|
|
445 && !(p[-1] == ':'
|
|
|
446 /* handle the "/:d:foo" case correctly */
|
|
|
447 && (p == beg + 2 || (p == beg + 4 && IS_DIRECTORY_SEP (*beg))))
|
|
428
|
448 #endif
|
|
771
|
449 )
|
|
|
450 p--;
|
|
428
|
451
|
|
|
452 return make_string (p, end - p);
|
|
|
453 }
|
|
|
454
|
|
|
455 DEFUN ("unhandled-file-name-directory", Funhandled_file_name_directory, 1, 1, 0, /*
|
|
|
456 Return a directly usable directory name somehow associated with FILENAME.
|
|
|
457 A `directly usable' directory name is one that may be used without the
|
|
|
458 intervention of any file handler.
|
|
|
459 If FILENAME is a directly usable file itself, return
|
|
|
460 \(file-name-directory FILENAME).
|
|
|
461 The `call-process' and `start-process' functions use this function to
|
|
|
462 get a current directory to run processes in.
|
|
|
463 */
|
|
444
|
464 (filename))
|
|
428
|
465 {
|
|
442
|
466 /* This function can GC. GC checked 2000-07-28 ben */
|
|
428
|
467 Lisp_Object handler;
|
|
|
468
|
|
|
469 /* If the file name has special constructs in it,
|
|
|
470 call the corresponding file handler. */
|
|
|
471 handler = Ffind_file_name_handler (filename, Qunhandled_file_name_directory);
|
|
|
472 if (!NILP (handler))
|
|
|
473 return call2 (handler, Qunhandled_file_name_directory,
|
|
|
474 filename);
|
|
|
475
|
|
|
476 return Ffile_name_directory (filename);
|
|
|
477 }
|
|
|
478
|
|
|
479
|
|
867
|
480 static Ibyte *
|
|
|
481 file_name_as_directory (Ibyte *out, Ibyte *in)
|
|
428
|
482 {
|
|
442
|
483 /* This function cannot GC */
|
|
771
|
484 int size = qxestrlen (in);
|
|
428
|
485
|
|
|
486 if (size == 0)
|
|
|
487 {
|
|
|
488 out[0] = '.';
|
|
|
489 out[1] = DIRECTORY_SEP;
|
|
|
490 out[2] = '\0';
|
|
|
491 }
|
|
|
492 else
|
|
|
493 {
|
|
771
|
494 qxestrcpy (out, in);
|
|
428
|
495 /* Append a slash if necessary */
|
|
|
496 if (!IS_ANY_SEP (out[size-1]))
|
|
|
497 {
|
|
|
498 out[size] = DIRECTORY_SEP;
|
|
|
499 out[size + 1] = '\0';
|
|
|
500 }
|
|
|
501 }
|
|
|
502 return out;
|
|
|
503 }
|
|
|
504
|
|
|
505 DEFUN ("file-name-as-directory", Ffile_name_as_directory, 1, 1, 0, /*
|
|
|
506 Return a string representing file FILENAME interpreted as a directory.
|
|
|
507 This operation exists because a directory is also a file, but its name as
|
|
|
508 a directory is different from its name as a file.
|
|
|
509 The result can be used as the value of `default-directory'
|
|
|
510 or passed as second argument to `expand-file-name'.
|
|
|
511 For a Unix-syntax file name, just appends a slash,
|
|
|
512 except for (file-name-as-directory \"\") => \"./\".
|
|
|
513 */
|
|
444
|
514 (filename))
|
|
428
|
515 {
|
|
442
|
516 /* This function can GC. GC checked 2000-07-28 ben */
|
|
867
|
517 Ibyte *buf;
|
|
428
|
518 Lisp_Object handler;
|
|
|
519
|
|
444
|
520 CHECK_STRING (filename);
|
|
428
|
521
|
|
|
522 /* If the file name has special constructs in it,
|
|
|
523 call the corresponding file handler. */
|
|
444
|
524 handler = Ffind_file_name_handler (filename, Qfile_name_as_directory);
|
|
428
|
525 if (!NILP (handler))
|
|
444
|
526 return call2_check_string (handler, Qfile_name_as_directory, filename);
|
|
|
527
|
|
867
|
528 buf = alloca_ibytes (XSTRING_LENGTH (filename) + 10);
|
|
771
|
529 return build_intstring (file_name_as_directory (buf, XSTRING_DATA (filename)));
|
|
428
|
530 }
|
|
|
531
|
|
|
532 /*
|
|
|
533 * Convert from directory name to filename.
|
|
|
534 * On UNIX, it's simple: just make sure there isn't a terminating /
|
|
|
535 *
|
|
|
536 * Value is nonzero if the string output is different from the input.
|
|
|
537 */
|
|
|
538
|
|
|
539 static int
|
|
867
|
540 directory_file_name (const Ibyte *src, Ibyte *dst)
|
|
428
|
541 {
|
|
442
|
542 /* This function cannot GC */
|
|
771
|
543 long slen = qxestrlen (src);
|
|
428
|
544 /* Process as Unix format: just remove any final slash.
|
|
|
545 But leave "/" unchanged; do not change it to "". */
|
|
771
|
546 qxestrcpy (dst, src);
|
|
428
|
547 if (slen > 1
|
|
|
548 && IS_DIRECTORY_SEP (dst[slen - 1])
|
|
657
|
549 #ifdef WIN32_FILENAMES
|
|
428
|
550 && !IS_ANY_SEP (dst[slen - 2])
|
|
657
|
551 #endif /* WIN32_FILENAMES */
|
|
428
|
552 )
|
|
|
553 dst[slen - 1] = 0;
|
|
|
554 return 1;
|
|
|
555 }
|
|
|
556
|
|
|
557 DEFUN ("directory-file-name", Fdirectory_file_name, 1, 1, 0, /*
|
|
444
|
558 Return the file name of the directory named DIRECTORY.
|
|
|
559 This is the name of the file that holds the data for the directory.
|
|
428
|
560 This operation exists because a directory is also a file, but its name as
|
|
|
561 a directory is different from its name as a file.
|
|
|
562 In Unix-syntax, this function just removes the final slash.
|
|
|
563 */
|
|
|
564 (directory))
|
|
|
565 {
|
|
442
|
566 /* This function can GC. GC checked 2000-07-28 ben */
|
|
867
|
567 Ibyte *buf;
|
|
428
|
568 Lisp_Object handler;
|
|
|
569
|
|
|
570 CHECK_STRING (directory);
|
|
|
571
|
|
|
572 #if 0 /* #### WTF? */
|
|
|
573 if (NILP (directory))
|
|
|
574 return Qnil;
|
|
|
575 #endif
|
|
|
576
|
|
|
577 /* If the file name has special constructs in it,
|
|
|
578 call the corresponding file handler. */
|
|
|
579 handler = Ffind_file_name_handler (directory, Qdirectory_file_name);
|
|
|
580 if (!NILP (handler))
|
|
|
581 return call2_check_string (handler, Qdirectory_file_name, directory);
|
|
867
|
582 buf = (Ibyte *) ALLOCA (XSTRING_LENGTH (directory) + 20);
|
|
771
|
583 directory_file_name (XSTRING_DATA (directory), buf);
|
|
|
584 return build_intstring (buf);
|
|
428
|
585 }
|
|
|
586
|
|
|
587 /* Fmake_temp_name used to be a simple wrapper around mktemp(), but it
|
|
|
588 proved too broken for our purposes (it supported only 26 or 62
|
|
|
589 unique names under some implementations). For example, this
|
|
|
590 arbitrary limit broke generation of Gnus Incoming* files.
|
|
|
591
|
|
|
592 This implementation is better than what one usually finds in libc.
|
|
|
593 --hniksic */
|
|
|
594
|
|
442
|
595 static unsigned int temp_name_rand;
|
|
|
596
|
|
428
|
597 DEFUN ("make-temp-name", Fmake_temp_name, 1, 1, 0, /*
|
|
442
|
598 Generate a temporary file name starting with PREFIX.
|
|
428
|
599 The Emacs process number forms part of the result, so there is no
|
|
|
600 danger of generating a name being used by another process.
|
|
|
601
|
|
|
602 In addition, this function makes an attempt to choose a name that
|
|
|
603 does not specify an existing file. To make this work, PREFIX should
|
|
844
|
604 be an absolute file name. A reasonable idiom is
|
|
|
605
|
|
|
606 \(make-temp-name (expand-file-name "myprefix" (temp-directory)))
|
|
|
607
|
|
|
608 which puts the file in the OS-specified temporary directory.
|
|
428
|
609 */
|
|
|
610 (prefix))
|
|
|
611 {
|
|
442
|
612 static const char tbl[64] =
|
|
|
613 {
|
|
428
|
614 'A','B','C','D','E','F','G','H',
|
|
|
615 'I','J','K','L','M','N','O','P',
|
|
|
616 'Q','R','S','T','U','V','W','X',
|
|
|
617 'Y','Z','a','b','c','d','e','f',
|
|
|
618 'g','h','i','j','k','l','m','n',
|
|
|
619 'o','p','q','r','s','t','u','v',
|
|
|
620 'w','x','y','z','0','1','2','3',
|
|
442
|
621 '4','5','6','7','8','9','-','_'
|
|
|
622 };
|
|
428
|
623
|
|
|
624 Bytecount len;
|
|
867
|
625 Ibyte *p, *data;
|
|
844
|
626 Lisp_Object handler;
|
|
428
|
627
|
|
|
628 CHECK_STRING (prefix);
|
|
844
|
629 handler = Ffind_file_name_handler (prefix, Qmake_temp_name);
|
|
|
630 if (!NILP (handler))
|
|
|
631 return call2_check_string (handler, Qmake_temp_name, prefix);
|
|
428
|
632
|
|
|
633 /* I was tempted to apply Fexpand_file_name on PREFIX here, but it's
|
|
|
634 a bad idea because:
|
|
|
635
|
|
|
636 1) It might change the prefix, so the resulting string might not
|
|
|
637 begin with PREFIX. This violates the principle of least
|
|
|
638 surprise.
|
|
|
639
|
|
|
640 2) It breaks under many unforeseeable circumstances, such as with
|
|
|
641 the code that uses (make-temp-name "") instead of
|
|
|
642 (make-temp-name "./").
|
|
|
643
|
|
844
|
644 [[ 3) It might yield unexpected (to stat(2)) results in the presence
|
|
|
645 of EFS and file name handlers.]] Now that we check for a handler,
|
|
|
646 that's less of a concern. --ben */
|
|
428
|
647
|
|
|
648 len = XSTRING_LENGTH (prefix);
|
|
867
|
649 data = alloca_ibytes (len + 7);
|
|
428
|
650 memcpy (data, XSTRING_DATA (prefix), len);
|
|
|
651 p = data + len;
|
|
771
|
652 p[6] = '\0';
|
|
428
|
653
|
|
|
654 /* VAL is created by adding 6 characters to PREFIX. The first three
|
|
|
655 are the PID of this process, in base 64, and the second three are
|
|
442
|
656 a pseudo-random number seeded from process startup time. This
|
|
|
657 ensures 262144 unique file names per PID per PREFIX per machine. */
|
|
|
658
|
|
|
659 {
|
|
771
|
660 unsigned int pid = (unsigned int) qxe_getpid ();
|
|
442
|
661 *p++ = tbl[(pid >> 0) & 63];
|
|
|
662 *p++ = tbl[(pid >> 6) & 63];
|
|
|
663 *p++ = tbl[(pid >> 12) & 63];
|
|
|
664 }
|
|
428
|
665
|
|
|
666 /* Here we try to minimize useless stat'ing when this function is
|
|
|
667 invoked many times successively with the same PREFIX. We achieve
|
|
442
|
668 this by using a very pseudo-random number generator to generate
|
|
|
669 file names unique to this process, with a very long cycle. */
|
|
428
|
670
|
|
|
671 while (1)
|
|
|
672 {
|
|
|
673 struct stat ignored;
|
|
442
|
674
|
|
|
675 p[0] = tbl[(temp_name_rand >> 0) & 63];
|
|
|
676 p[1] = tbl[(temp_name_rand >> 6) & 63];
|
|
|
677 p[2] = tbl[(temp_name_rand >> 12) & 63];
|
|
428
|
678
|
|
|
679 /* Poor man's congruential RN generator. Replace with ++count
|
|
|
680 for debugging. */
|
|
442
|
681 temp_name_rand += 25229;
|
|
|
682 temp_name_rand %= 225307;
|
|
428
|
683
|
|
|
684 QUIT;
|
|
|
685
|
|
771
|
686 if (qxe_stat (data, &ignored) < 0)
|
|
428
|
687 {
|
|
|
688 /* We want to return only if errno is ENOENT. */
|
|
|
689 if (errno == ENOENT)
|
|
771
|
690 return make_string (data, len + 6);
|
|
428
|
691
|
|
|
692 /* The error here is dubious, but there is little else we
|
|
|
693 can do. The alternatives are to return nil, which is
|
|
|
694 as bad as (and in many cases worse than) throwing the
|
|
|
695 error, or to ignore the error, which will likely result
|
|
|
696 in inflooping. */
|
|
|
697 report_file_error ("Cannot create temporary name for prefix",
|
|
563
|
698 prefix);
|
|
428
|
699 return Qnil; /* not reached */
|
|
|
700 }
|
|
|
701 }
|
|
|
702 }
|
|
|
703
|
|
|
704
|
|
771
|
705
|
|
428
|
706 DEFUN ("expand-file-name", Fexpand_file_name, 1, 2, 0, /*
|
|
|
707 Convert filename NAME to absolute, and canonicalize it.
|
|
|
708 Second arg DEFAULT-DIRECTORY is directory to start with if NAME is relative
|
|
|
709 (does not start with slash); if DEFAULT-DIRECTORY is nil or missing,
|
|
444
|
710 the current buffer's value of `default-directory' is used.
|
|
428
|
711 File name components that are `.' are removed, and
|
|
|
712 so are file name components followed by `..', along with the `..' itself;
|
|
|
713 note that these simplifications are done without checking the resulting
|
|
|
714 file names in the file system.
|
|
|
715 An initial `~/' expands to your home directory.
|
|
|
716 An initial `~USER/' expands to USER's home directory.
|
|
|
717 See also the function `substitute-in-file-name'.
|
|
|
718 */
|
|
|
719 (name, default_directory))
|
|
|
720 {
|
|
771
|
721 /* This function can GC. GC-checked 2000-11-18.
|
|
|
722 This function synched with Emacs 21.0.103. */
|
|
867
|
723 Ibyte *nm;
|
|
|
724
|
|
|
725 Ibyte *newdir, *p, *o;
|
|
428
|
726 int tlen;
|
|
867
|
727 Ibyte *target;
|
|
657
|
728 #ifdef WIN32_FILENAMES
|
|
428
|
729 int drive = 0;
|
|
|
730 int collapse_newdir = 1;
|
|
771
|
731 /* XEmacs note: This concerns the special '/:' syntax for preventing
|
|
|
732 wildcards and such. We don't support this currently but I'm
|
|
|
733 keeping the code here in case we do. */
|
|
|
734 int is_escaped = 0;
|
|
657
|
735 #endif
|
|
|
736 #ifndef WIN32_NATIVE
|
|
428
|
737 struct passwd *pw;
|
|
771
|
738 #endif
|
|
428
|
739 int length;
|
|
446
|
740 Lisp_Object handler = Qnil;
|
|
|
741 struct gcpro gcpro1, gcpro2, gcpro3;
|
|
442
|
742
|
|
|
743 /* both of these get set below */
|
|
446
|
744 GCPRO3 (name, default_directory, handler);
|
|
428
|
745
|
|
|
746 CHECK_STRING (name);
|
|
|
747
|
|
|
748 /* If the file name has special constructs in it,
|
|
|
749 call the corresponding file handler. */
|
|
|
750 handler = Ffind_file_name_handler (name, Qexpand_file_name);
|
|
|
751 if (!NILP (handler))
|
|
446
|
752 RETURN_UNGCPRO (call3_check_string (handler, Qexpand_file_name,
|
|
|
753 name, default_directory));
|
|
428
|
754
|
|
|
755 /* Use the buffer's default-directory if DEFAULT_DIRECTORY is omitted. */
|
|
|
756 if (NILP (default_directory))
|
|
|
757 default_directory = current_buffer->directory;
|
|
|
758 if (! STRINGP (default_directory))
|
|
771
|
759 #ifdef WIN32_NATIVE
|
|
|
760 default_directory = build_string ("C:\\");
|
|
|
761 #else
|
|
428
|
762 default_directory = build_string ("/");
|
|
771
|
763 #endif
|
|
428
|
764
|
|
|
765 if (!NILP (default_directory))
|
|
|
766 {
|
|
|
767 handler = Ffind_file_name_handler (default_directory, Qexpand_file_name);
|
|
|
768 if (!NILP (handler))
|
|
446
|
769 RETURN_UNGCPRO (call3 (handler, Qexpand_file_name,
|
|
|
770 name, default_directory));
|
|
428
|
771 }
|
|
|
772
|
|
|
773 o = XSTRING_DATA (default_directory);
|
|
|
774
|
|
|
775 /* Make sure DEFAULT_DIRECTORY is properly expanded.
|
|
|
776 It would be better to do this down below where we actually use
|
|
|
777 default_directory. Unfortunately, calling Fexpand_file_name recursively
|
|
|
778 could invoke GC, and the strings might be relocated. This would
|
|
|
779 be annoying because we have pointers into strings lying around
|
|
|
780 that would need adjusting, and people would add new pointers to
|
|
|
781 the code and forget to adjust them, resulting in intermittent bugs.
|
|
|
782 Putting this call here avoids all that crud.
|
|
|
783
|
|
|
784 The EQ test avoids infinite recursion. */
|
|
|
785 if (! NILP (default_directory) && !EQ (default_directory, name)
|
|
|
786 /* Save time in some common cases - as long as default_directory
|
|
|
787 is not relative, it can be canonicalized with name below (if it
|
|
|
788 is needed at all) without requiring it to be expanded now. */
|
|
657
|
789 #ifdef WIN32_FILENAMES
|
|
442
|
790 /* Detect Windows file names with drive specifiers. */
|
|
428
|
791 && ! (IS_DRIVE (o[0]) && (IS_DEVICE_SEP (o[1]) && IS_DIRECTORY_SEP (o[2])))
|
|
|
792 /* Detect Windows file names in UNC format. */
|
|
|
793 && ! (IS_DIRECTORY_SEP (o[0]) && IS_DIRECTORY_SEP (o[1]))
|
|
657
|
794 #endif /* not WIN32_FILENAMES */
|
|
|
795 #ifndef WIN32_NATIVE
|
|
428
|
796 /* Detect Unix absolute file names (/... alone is not absolute on
|
|
442
|
797 Windows). */
|
|
428
|
798 && ! (IS_DIRECTORY_SEP (o[0]))
|
|
442
|
799 #endif /* not WIN32_NATIVE */
|
|
428
|
800 )
|
|
442
|
801
|
|
|
802 default_directory = Fexpand_file_name (default_directory, Qnil);
|
|
428
|
803
|
|
|
804 #ifdef FILE_SYSTEM_CASE
|
|
|
805 name = FILE_SYSTEM_CASE (name);
|
|
|
806 #endif
|
|
|
807
|
|
|
808 /* #### dmoore - this is ugly, clean this up. Looks like nm pointing
|
|
|
809 into name should be safe during all of this, though. */
|
|
|
810 nm = XSTRING_DATA (name);
|
|
|
811
|
|
657
|
812 #ifdef WIN32_FILENAMES
|
|
428
|
813 /* We will force directory separators to be either all \ or /, so make
|
|
|
814 a local copy to modify, even if there ends up being no change. */
|
|
867
|
815 nm = qxestrcpy (alloca_ibytes (qxestrlen (nm) + 1), nm);
|
|
771
|
816
|
|
|
817 /* Note if special escape prefix is present, but remove for now. */
|
|
|
818 if (nm[0] == '/' && nm[1] == ':')
|
|
|
819 {
|
|
|
820 is_escaped = 1;
|
|
|
821 nm += 2;
|
|
|
822 }
|
|
428
|
823
|
|
|
824 /* Find and remove drive specifier if present; this makes nm absolute
|
|
|
825 even if the rest of the name appears to be relative. */
|
|
|
826 {
|
|
867
|
827 Ibyte *colon = qxestrrchr (nm, ':');
|
|
428
|
828
|
|
|
829 if (colon)
|
|
657
|
830 {
|
|
428
|
831 /* Only recognize colon as part of drive specifier if there is a
|
|
|
832 single alphabetic character preceding the colon (and if the
|
|
|
833 character before the drive letter, if present, is a directory
|
|
|
834 separator); this is to support the remote system syntax used by
|
|
|
835 ange-ftp, and the "po:username" syntax for POP mailboxes. */
|
|
|
836 look_again:
|
|
|
837 if (nm == colon)
|
|
|
838 nm++;
|
|
|
839 else if (IS_DRIVE (colon[-1])
|
|
|
840 && (colon == nm + 1 || IS_DIRECTORY_SEP (colon[-2])))
|
|
|
841 {
|
|
|
842 drive = colon[-1];
|
|
|
843 nm = colon + 1;
|
|
|
844 }
|
|
|
845 else
|
|
|
846 {
|
|
|
847 while (--colon >= nm)
|
|
|
848 if (colon[0] == ':')
|
|
|
849 goto look_again;
|
|
|
850 }
|
|
657
|
851 }
|
|
428
|
852 }
|
|
|
853
|
|
|
854 /* If we see "c://somedir", we want to strip the first slash after the
|
|
|
855 colon when stripping the drive letter. Otherwise, this expands to
|
|
|
856 "//somedir". */
|
|
|
857 if (drive && IS_DIRECTORY_SEP (nm[0]) && IS_DIRECTORY_SEP (nm[1]))
|
|
|
858 nm++;
|
|
657
|
859 #endif /* WIN32_FILENAMES */
|
|
428
|
860
|
|
771
|
861 #ifdef WIN32_FILENAMES
|
|
|
862 /* Discard any previous drive specifier if nm is now in UNC format. */
|
|
|
863 if (IS_DIRECTORY_SEP (nm[0]) && IS_DIRECTORY_SEP (nm[1]))
|
|
|
864 {
|
|
|
865 drive = 0;
|
|
|
866 }
|
|
|
867 #endif
|
|
|
868
|
|
428
|
869 /* If nm is absolute, look for /./ or /../ sequences; if none are
|
|
|
870 found, we can probably return right away. We will avoid allocating
|
|
|
871 a new string if name is already fully expanded. */
|
|
|
872 if (
|
|
|
873 IS_DIRECTORY_SEP (nm[0])
|
|
442
|
874 #ifdef WIN32_NATIVE
|
|
771
|
875 && (drive || IS_DIRECTORY_SEP (nm[1])) && !is_escaped
|
|
428
|
876 #endif
|
|
|
877 )
|
|
|
878 {
|
|
|
879 /* If it turns out that the filename we want to return is just a
|
|
|
880 suffix of FILENAME, we don't need to go through and edit
|
|
|
881 things; we just need to construct a new string using data
|
|
|
882 starting at the middle of FILENAME. If we set lose to a
|
|
|
883 non-zero value, that means we've discovered that we can't do
|
|
|
884 that cool trick. */
|
|
|
885 int lose = 0;
|
|
|
886
|
|
|
887 p = nm;
|
|
|
888 while (*p)
|
|
|
889 {
|
|
|
890 /* Since we know the name is absolute, we can assume that each
|
|
|
891 element starts with a "/". */
|
|
|
892
|
|
|
893 /* "." and ".." are hairy. */
|
|
|
894 if (IS_DIRECTORY_SEP (p[0])
|
|
|
895 && p[1] == '.'
|
|
|
896 && (IS_DIRECTORY_SEP (p[2])
|
|
|
897 || p[2] == 0
|
|
|
898 || (p[2] == '.' && (IS_DIRECTORY_SEP (p[3])
|
|
|
899 || p[3] == 0))))
|
|
|
900 lose = 1;
|
|
771
|
901 /* We want to replace multiple `/' in a row with a single
|
|
|
902 slash. */
|
|
|
903 else if (p > nm
|
|
|
904 && IS_DIRECTORY_SEP (p[0])
|
|
|
905 && IS_DIRECTORY_SEP (p[1]))
|
|
|
906 lose = 1;
|
|
428
|
907 p++;
|
|
|
908 }
|
|
|
909 if (!lose)
|
|
|
910 {
|
|
657
|
911 #ifdef WIN32_FILENAMES
|
|
|
912 if (drive || IS_DIRECTORY_SEP (nm[1]))
|
|
428
|
913 {
|
|
867
|
914 Ibyte *newnm;
|
|
771
|
915
|
|
657
|
916 if (IS_DIRECTORY_SEP (nm[1]))
|
|
|
917 {
|
|
771
|
918 newnm = mswindows_canonicalize_filename (nm);
|
|
|
919 if (qxestrcmp (newnm, XSTRING_DATA (name)) != 0)
|
|
|
920 name = build_intstring (newnm);
|
|
657
|
921 }
|
|
771
|
922 else
|
|
657
|
923 {
|
|
771
|
924 /* drive must be set, so this is okay */
|
|
|
925 newnm = mswindows_canonicalize_filename (nm - 2);
|
|
|
926 if (qxestrcmp (newnm, XSTRING_DATA (name)) != 0)
|
|
|
927 {
|
|
|
928 name = build_intstring (newnm);
|
|
|
929 XSTRING_DATA (name)[0] = DRIVE_LETTER (drive);
|
|
|
930 XSTRING_DATA (name)[1] = ':';
|
|
|
931 }
|
|
657
|
932 }
|
|
771
|
933 xfree (newnm);
|
|
657
|
934 RETURN_UNGCPRO (name);
|
|
428
|
935 }
|
|
771
|
936 #endif /* WIN32_FILENAMES */
|
|
657
|
937 #ifndef WIN32_NATIVE
|
|
428
|
938 if (nm == XSTRING_DATA (name))
|
|
442
|
939 RETURN_UNGCPRO (name);
|
|
771
|
940 RETURN_UNGCPRO (build_intstring (nm));
|
|
442
|
941 #endif /* not WIN32_NATIVE */
|
|
428
|
942 }
|
|
|
943 }
|
|
|
944
|
|
|
945 /* At this point, nm might or might not be an absolute file name. We
|
|
|
946 need to expand ~ or ~user if present, otherwise prefix nm with
|
|
|
947 default_directory if nm is not absolute, and finally collapse /./
|
|
|
948 and /foo/../ sequences.
|
|
|
949
|
|
|
950 We set newdir to be the appropriate prefix if one is needed:
|
|
|
951 - the relevant user directory if nm starts with ~ or ~user
|
|
|
952 - the specified drive's working dir (DOS/NT only) if nm does not
|
|
|
953 start with /
|
|
|
954 - the value of default_directory.
|
|
|
955
|
|
|
956 Note that these prefixes are not guaranteed to be absolute (except
|
|
|
957 for the working dir of a drive). Therefore, to ensure we always
|
|
|
958 return an absolute name, if the final prefix is not absolute we
|
|
|
959 append it to the current working directory. */
|
|
|
960
|
|
|
961 newdir = 0;
|
|
|
962
|
|
|
963 if (nm[0] == '~') /* prefix ~ */
|
|
|
964 {
|
|
|
965 if (IS_DIRECTORY_SEP (nm[1])
|
|
|
966 || nm[1] == 0) /* ~ by itself */
|
|
|
967 {
|
|
867
|
968 Ibyte *homedir = get_home_directory ();
|
|
771
|
969
|
|
|
970 if (!homedir)
|
|
867
|
971 newdir = (Ibyte *) "";
|
|
428
|
972 else
|
|
771
|
973 newdir = homedir;
|
|
428
|
974
|
|
|
975 nm++;
|
|
657
|
976 #ifdef WIN32_FILENAMES
|
|
428
|
977 collapse_newdir = 0;
|
|
|
978 #endif
|
|
|
979 }
|
|
|
980 else /* ~user/filename */
|
|
|
981 {
|
|
|
982 for (p = nm; *p && (!IS_DIRECTORY_SEP (*p)); p++)
|
|
|
983 DO_NOTHING;
|
|
867
|
984 o = (Ibyte *) ALLOCA (p - nm + 1);
|
|
771
|
985 memcpy (o, nm, p - nm);
|
|
428
|
986 o [p - nm] = 0;
|
|
|
987
|
|
558
|
988 /* #### While NT is single-user (for the moment) you still
|
|
|
989 can have multiple user profiles users defined, each with
|
|
|
990 its HOME. So maybe possibly we should think about handling
|
|
|
991 ~user. --ben */
|
|
|
992 #ifndef WIN32_NATIVE
|
|
442
|
993 #ifdef CYGWIN
|
|
771
|
994 {
|
|
867
|
995 Ibyte *user;
|
|
771
|
996
|
|
|
997 if ((user = user_login_name (NULL)) != NULL)
|
|
|
998 {
|
|
|
999 /* Does the user login name match the ~name? */
|
|
|
1000 if (qxestrcmp (user, o + 1) == 0)
|
|
|
1001 {
|
|
|
1002 newdir = get_home_directory ();
|
|
|
1003 nm = p;
|
|
|
1004 }
|
|
|
1005 }
|
|
|
1006 }
|
|
|
1007 if (!newdir)
|
|
428
|
1008 {
|
|
442
|
1009 #endif /* CYGWIN */
|
|
428
|
1010 /* Jamie reports that getpwnam() can get wedged by SIGIO/SIGALARM
|
|
|
1011 occurring in it. (It can call select()). */
|
|
|
1012 slow_down_interrupts ();
|
|
771
|
1013 pw = (struct passwd *) qxe_getpwnam (o + 1);
|
|
428
|
1014 speed_up_interrupts ();
|
|
|
1015 if (pw)
|
|
|
1016 {
|
|
867
|
1017 newdir = (Ibyte *) pw->pw_dir;
|
|
428
|
1018 nm = p;
|
|
771
|
1019 /* FSF: if WIN32_NATIVE, collapse_newdir = 0;
|
|
|
1020 not possible here. */
|
|
428
|
1021 }
|
|
442
|
1022 #ifdef CYGWIN
|
|
428
|
1023 }
|
|
|
1024 #endif
|
|
442
|
1025 #endif /* not WIN32_NATIVE */
|
|
428
|
1026
|
|
|
1027 /* If we don't find a user of that name, leave the name
|
|
|
1028 unchanged; don't move nm forward to p. */
|
|
|
1029 }
|
|
|
1030 }
|
|
|
1031
|
|
657
|
1032 #ifdef WIN32_FILENAMES
|
|
428
|
1033 /* On DOS and Windows, nm is absolute if a drive name was specified;
|
|
|
1034 use the drive's current directory as the prefix if needed. */
|
|
|
1035 if (!newdir && drive)
|
|
|
1036 {
|
|
657
|
1037 #ifdef WIN32_NATIVE
|
|
428
|
1038 /* Get default directory if needed to make nm absolute. */
|
|
|
1039 if (!IS_DIRECTORY_SEP (nm[0]))
|
|
|
1040 {
|
|
867
|
1041 Ibyte *newcwd = mswindows_getdcwd (toupper (drive) - 'A' + 1);
|
|
771
|
1042 if (newcwd)
|
|
|
1043 {
|
|
867
|
1044 IBYTE_STRING_TO_ALLOCA (newcwd, newdir);
|
|
771
|
1045 xfree (newcwd);
|
|
|
1046 }
|
|
|
1047 else
|
|
428
|
1048 newdir = NULL;
|
|
|
1049 }
|
|
657
|
1050 #endif /* WIN32_NATIVE */
|
|
428
|
1051 if (!newdir)
|
|
|
1052 {
|
|
|
1053 /* Either nm starts with /, or drive isn't mounted. */
|
|
867
|
1054 newdir = (Ibyte *) ALLOCA (4);
|
|
428
|
1055 newdir[0] = DRIVE_LETTER (drive);
|
|
|
1056 newdir[1] = ':';
|
|
|
1057 newdir[2] = '/';
|
|
|
1058 newdir[3] = 0;
|
|
|
1059 }
|
|
|
1060 }
|
|
657
|
1061 #endif /* WIN32_FILENAMES */
|
|
428
|
1062
|
|
|
1063 /* Finally, if no prefix has been specified and nm is not absolute,
|
|
|
1064 then it must be expanded relative to default_directory. */
|
|
|
1065
|
|
|
1066 if (1
|
|
442
|
1067 #ifndef WIN32_NATIVE
|
|
428
|
1068 /* /... alone is not absolute on DOS and Windows. */
|
|
|
1069 && !IS_DIRECTORY_SEP (nm[0])
|
|
657
|
1070 #endif
|
|
|
1071 #ifdef WIN32_FILENAMES
|
|
428
|
1072 && !(IS_DIRECTORY_SEP (nm[0]) && IS_DIRECTORY_SEP (nm[1]))
|
|
|
1073 #endif
|
|
|
1074 && !newdir)
|
|
|
1075 {
|
|
|
1076 newdir = XSTRING_DATA (default_directory);
|
|
771
|
1077 #ifdef WIN32_FILENAMES
|
|
|
1078 /* Note if special escape prefix is present, but remove for now. */
|
|
|
1079 if (newdir[0] == '/' && newdir[1] == ':')
|
|
|
1080 {
|
|
|
1081 is_escaped = 1;
|
|
|
1082 newdir += 2;
|
|
|
1083 }
|
|
|
1084 #endif
|
|
428
|
1085 }
|
|
|
1086
|
|
657
|
1087 #ifdef WIN32_FILENAMES
|
|
428
|
1088 if (newdir)
|
|
|
1089 {
|
|
|
1090 /* First ensure newdir is an absolute name. */
|
|
|
1091 if (
|
|
442
|
1092 /* Detect Windows file names with drive specifiers. */
|
|
428
|
1093 ! (IS_DRIVE (newdir[0])
|
|
|
1094 && IS_DEVICE_SEP (newdir[1]) && IS_DIRECTORY_SEP (newdir[2]))
|
|
|
1095 /* Detect Windows file names in UNC format. */
|
|
|
1096 && ! (IS_DIRECTORY_SEP (newdir[0]) && IS_DIRECTORY_SEP (newdir[1]))
|
|
771
|
1097 /* XEmacs: added these two lines: Detect drive spec by itself */
|
|
428
|
1098 && ! (IS_DEVICE_SEP (newdir[1]) && newdir[2] == 0)
|
|
657
|
1099 /* Detect unix format. */
|
|
|
1100 #ifndef WIN32_NATIVE
|
|
|
1101 && ! (IS_DIRECTORY_SEP (newdir[0]))
|
|
|
1102 #endif
|
|
428
|
1103 )
|
|
|
1104 {
|
|
|
1105 /* Effectively, let newdir be (expand-file-name newdir cwd).
|
|
|
1106 Because of the admonition against calling expand-file-name
|
|
|
1107 when we have pointers into lisp strings, we accomplish this
|
|
|
1108 indirectly by prepending newdir to nm if necessary, and using
|
|
|
1109 cwd (or the wd of newdir's drive) as the new newdir. */
|
|
|
1110
|
|
|
1111 if (IS_DRIVE (newdir[0]) && newdir[1] == ':')
|
|
|
1112 {
|
|
|
1113 drive = newdir[0];
|
|
|
1114 newdir += 2;
|
|
|
1115 }
|
|
|
1116 if (!IS_DIRECTORY_SEP (nm[0]))
|
|
|
1117 {
|
|
867
|
1118 Ibyte *tmp = (Ibyte *) ALLOCA (qxestrlen (newdir) +
|
|
771
|
1119 qxestrlen (nm) + 2);
|
|
|
1120 file_name_as_directory (tmp, newdir);
|
|
|
1121 qxestrcat (tmp, nm);
|
|
428
|
1122 nm = tmp;
|
|
|
1123 }
|
|
|
1124 if (drive)
|
|
|
1125 {
|
|
657
|
1126 #ifdef WIN32_NATIVE
|
|
867
|
1127 Ibyte *newcwd = mswindows_getdcwd (toupper (drive) - 'A' + 1);
|
|
771
|
1128 if (newcwd)
|
|
|
1129 {
|
|
867
|
1130 IBYTE_STRING_TO_ALLOCA (newcwd, newdir);
|
|
771
|
1131 xfree (newcwd);
|
|
|
1132 }
|
|
|
1133 else
|
|
657
|
1134 #endif
|
|
867
|
1135 IBYTE_STRING_TO_ALLOCA ((Ibyte *) "/", newdir);
|
|
428
|
1136 }
|
|
|
1137 else
|
|
867
|
1138 IBYTE_STRING_TO_ALLOCA (get_initial_directory (0, 0), newdir);
|
|
428
|
1139 }
|
|
|
1140
|
|
|
1141 /* Strip off drive name from prefix, if present. */
|
|
|
1142 if (IS_DRIVE (newdir[0]) && newdir[1] == ':')
|
|
|
1143 {
|
|
|
1144 drive = newdir[0];
|
|
|
1145 newdir += 2;
|
|
|
1146 }
|
|
|
1147
|
|
|
1148 /* Keep only a prefix from newdir if nm starts with slash
|
|
771
|
1149 (//server/share for UNC, nothing otherwise). */
|
|
657
|
1150 if (IS_DIRECTORY_SEP (nm[0])
|
|
|
1151 #ifndef WIN32_NATIVE
|
|
|
1152 && IS_DIRECTORY_SEP (nm[1])
|
|
|
1153 #endif
|
|
|
1154 && collapse_newdir)
|
|
428
|
1155 {
|
|
|
1156 if (IS_DIRECTORY_SEP (newdir[0]) && IS_DIRECTORY_SEP (newdir[1]))
|
|
|
1157 {
|
|
664
|
1158 newdir =
|
|
867
|
1159 (Ibyte *)
|
|
|
1160 qxestrcpy ((Ibyte *) ALLOCA (qxestrlen (newdir) + 1),
|
|
771
|
1161 newdir);
|
|
428
|
1162 p = newdir + 2;
|
|
|
1163 while (*p && !IS_DIRECTORY_SEP (*p)) p++;
|
|
|
1164 p++;
|
|
|
1165 while (*p && !IS_DIRECTORY_SEP (*p)) p++;
|
|
|
1166 *p = 0;
|
|
|
1167 }
|
|
|
1168 else
|
|
867
|
1169 newdir = (Ibyte *) "";
|
|
428
|
1170 }
|
|
|
1171 }
|
|
657
|
1172 #endif /* WIN32_FILENAMES */
|
|
428
|
1173
|
|
|
1174 if (newdir)
|
|
|
1175 {
|
|
|
1176 /* Get rid of any slash at the end of newdir, unless newdir is
|
|
771
|
1177 just / or // (an incomplete UNC name). */
|
|
|
1178 length = qxestrlen (newdir);
|
|
428
|
1179 if (length > 1 && IS_DIRECTORY_SEP (newdir[length - 1])
|
|
657
|
1180 #ifdef WIN32_FILENAMES
|
|
428
|
1181 && !(length == 2 && IS_DIRECTORY_SEP (newdir[0]))
|
|
|
1182 #endif
|
|
|
1183 )
|
|
|
1184 {
|
|
867
|
1185 Ibyte *temp = (Ibyte *) ALLOCA (length);
|
|
428
|
1186 memcpy (temp, newdir, length - 1);
|
|
|
1187 temp[length - 1] = 0;
|
|
|
1188 newdir = temp;
|
|
|
1189 }
|
|
|
1190 tlen = length + 1;
|
|
|
1191 }
|
|
|
1192 else
|
|
|
1193 tlen = 0;
|
|
|
1194
|
|
|
1195 /* Now concatenate the directory and name to new space in the stack frame */
|
|
771
|
1196 tlen += qxestrlen (nm) + 1;
|
|
657
|
1197 #ifdef WIN32_FILENAMES
|
|
771
|
1198 /* Reserve space for drive specifier and escape prefix, since either
|
|
|
1199 or both may need to be inserted. (The Microsoft x86 compiler
|
|
428
|
1200 produces incorrect code if the following two lines are combined.) */
|
|
867
|
1201 target = (Ibyte *) ALLOCA (tlen + 4);
|
|
771
|
1202 target += 4;
|
|
657
|
1203 #else /* not WIN32_FILENAMES */
|
|
867
|
1204 target = (Ibyte *) ALLOCA (tlen);
|
|
657
|
1205 #endif /* not WIN32_FILENAMES */
|
|
428
|
1206 *target = 0;
|
|
|
1207
|
|
|
1208 if (newdir)
|
|
|
1209 {
|
|
|
1210 if (nm[0] == 0 || IS_DIRECTORY_SEP (nm[0]))
|
|
771
|
1211 {
|
|
|
1212 #ifdef WIN32_FILENAMES
|
|
|
1213 /* If newdir is effectively "C:/", then the drive letter will have
|
|
|
1214 been stripped and newdir will be "/". Concatenating with an
|
|
|
1215 absolute directory in nm produces "//", which will then be
|
|
|
1216 incorrectly treated as a network share. Ignore newdir in
|
|
|
1217 this case (keeping the drive letter). */
|
|
|
1218 if (!(drive && nm[0] && IS_DIRECTORY_SEP (newdir[0])
|
|
|
1219 && newdir[1] == '\0'))
|
|
|
1220 #endif
|
|
|
1221 qxestrcpy (target, newdir);
|
|
|
1222 }
|
|
428
|
1223 else
|
|
771
|
1224 file_name_as_directory (target, newdir);
|
|
428
|
1225 }
|
|
|
1226
|
|
771
|
1227 qxestrcat (target, nm);
|
|
428
|
1228
|
|
|
1229 /* ASSERT (IS_DIRECTORY_SEP (target[0])) if not VMS */
|
|
|
1230
|
|
771
|
1231 /* Now canonicalize by removing `//', `/.' and `/foo/..' if they
|
|
|
1232 appear. */
|
|
428
|
1233
|
|
|
1234 p = target;
|
|
|
1235 o = target;
|
|
|
1236
|
|
|
1237 while (*p)
|
|
|
1238 {
|
|
|
1239 if (!IS_DIRECTORY_SEP (*p))
|
|
|
1240 {
|
|
|
1241 *o++ = *p++;
|
|
|
1242 }
|
|
|
1243 else if (IS_DIRECTORY_SEP (p[0])
|
|
|
1244 && p[1] == '.'
|
|
|
1245 && (IS_DIRECTORY_SEP (p[2])
|
|
|
1246 || p[2] == 0))
|
|
|
1247 {
|
|
|
1248 /* If "/." is the entire filename, keep the "/". Otherwise,
|
|
|
1249 just delete the whole "/.". */
|
|
|
1250 if (o == target && p[2] == '\0')
|
|
|
1251 *o++ = *p;
|
|
|
1252 p += 2;
|
|
|
1253 }
|
|
|
1254 else if (IS_DIRECTORY_SEP (p[0]) && p[1] == '.' && p[2] == '.'
|
|
|
1255 /* `/../' is the "superroot" on certain file systems. */
|
|
|
1256 && o != target
|
|
|
1257 && (IS_DIRECTORY_SEP (p[3]) || p[3] == 0))
|
|
|
1258 {
|
|
|
1259 while (o != target && (--o) && !IS_DIRECTORY_SEP (*o))
|
|
|
1260 ;
|
|
|
1261 /* Keep initial / only if this is the whole name. */
|
|
|
1262 if (o == target && IS_ANY_SEP (*o) && p[3] == 0)
|
|
|
1263 ++o;
|
|
|
1264 p += 3;
|
|
|
1265 }
|
|
771
|
1266 else if (p > target
|
|
|
1267 && IS_DIRECTORY_SEP (p[0]) && IS_DIRECTORY_SEP (p[1]))
|
|
|
1268 {
|
|
|
1269 /* Collapse multiple `/' in a row. */
|
|
|
1270 *o++ = *p++;
|
|
|
1271 while (IS_DIRECTORY_SEP (*p))
|
|
|
1272 ++p;
|
|
|
1273 }
|
|
428
|
1274 else
|
|
|
1275 {
|
|
|
1276 *o++ = *p++;
|
|
|
1277 }
|
|
|
1278 }
|
|
|
1279
|
|
657
|
1280 #ifdef WIN32_FILENAMES
|
|
428
|
1281 /* At last, set drive name, except for network file name. */
|
|
|
1282 if (drive)
|
|
|
1283 {
|
|
|
1284 target -= 2;
|
|
|
1285 target[0] = DRIVE_LETTER (drive);
|
|
|
1286 target[1] = ':';
|
|
|
1287 }
|
|
657
|
1288 #ifdef WIN32_NATIVE
|
|
428
|
1289 else
|
|
|
1290 {
|
|
|
1291 assert (IS_DIRECTORY_SEP (target[0]) && IS_DIRECTORY_SEP (target[1]));
|
|
|
1292 }
|
|
657
|
1293 #endif
|
|
771
|
1294 /* Reinsert the escape prefix if required. */
|
|
|
1295 if (is_escaped)
|
|
|
1296 {
|
|
|
1297 target -= 2;
|
|
|
1298 target[0] = '/';
|
|
|
1299 target[1] = ':';
|
|
|
1300 }
|
|
|
1301
|
|
|
1302 *o = '\0';
|
|
|
1303
|
|
|
1304 {
|
|
867
|
1305 Ibyte *newtarget = mswindows_canonicalize_filename (target);
|
|
771
|
1306 Lisp_Object result = build_intstring (newtarget);
|
|
|
1307 xfree (newtarget);
|
|
|
1308
|
|
|
1309 RETURN_UNGCPRO (result);
|
|
|
1310 }
|
|
|
1311 #else /* not WIN32_FILENAMES */
|
|
442
|
1312 RETURN_UNGCPRO (make_string (target, o - target));
|
|
771
|
1313 #endif /* not WIN32_FILENAMES */
|
|
428
|
1314 }
|
|
|
1315
|
|
|
1316 DEFUN ("file-truename", Ffile_truename, 1, 2, 0, /*
|
|
444
|
1317 Return the canonical name of FILENAME.
|
|
|
1318 Second arg DEFAULT is directory to start with if FILENAME is relative
|
|
428
|
1319 (does not start with slash); if DEFAULT is nil or missing,
|
|
444
|
1320 the current buffer's value of `default-directory' is used.
|
|
428
|
1321 No component of the resulting pathname will be a symbolic link, as
|
|
|
1322 in the realpath() function.
|
|
|
1323 */
|
|
|
1324 (filename, default_))
|
|
|
1325 {
|
|
442
|
1326 /* This function can GC. GC checked 2000-07-28 ben. */
|
|
428
|
1327 Lisp_Object expanded_name;
|
|
|
1328 struct gcpro gcpro1;
|
|
|
1329
|
|
|
1330 CHECK_STRING (filename);
|
|
|
1331
|
|
|
1332 expanded_name = Fexpand_file_name (filename, default_);
|
|
|
1333
|
|
|
1334 if (!STRINGP (expanded_name))
|
|
|
1335 return Qnil;
|
|
|
1336
|
|
|
1337 GCPRO1 (expanded_name);
|
|
442
|
1338
|
|
|
1339 {
|
|
|
1340 Lisp_Object handler =
|
|
|
1341 Ffind_file_name_handler (expanded_name, Qfile_truename);
|
|
|
1342
|
|
|
1343 if (!NILP (handler))
|
|
|
1344 RETURN_UNGCPRO
|
|
|
1345 (call2_check_string (handler, Qfile_truename, expanded_name));
|
|
|
1346 }
|
|
428
|
1347
|
|
|
1348 {
|
|
867
|
1349 Ibyte resolved_path[PATH_MAX];
|
|
771
|
1350 Bytecount elen = XSTRING_LENGTH (expanded_name);
|
|
867
|
1351 Ibyte *path;
|
|
|
1352 Ibyte *p;
|
|
771
|
1353
|
|
|
1354 LISP_STRING_TO_ALLOCA (expanded_name, path);
|
|
988
|
1355
|
|
1111
|
1356 #if defined (WIN32_FILENAMES) && defined (CYGWIN)
|
|
988
|
1357 /* When using win32 filenames in cygwin we want file-truename to
|
|
|
1358 detect that c:/windows == /windows for example. */
|
|
1111
|
1359 if (! (IS_DIRECTORY_SEP (path[0]) && IS_DIRECTORY_SEP (path[1])))
|
|
|
1360 {
|
|
|
1361 LOCAL_TO_WIN32_FILE_FORMAT (path, p);
|
|
|
1362 path = p;
|
|
|
1363 }
|
|
988
|
1364 #endif
|
|
428
|
1365 p = path;
|
|
442
|
1366
|
|
428
|
1367 /* Try doing it all at once. */
|
|
771
|
1368 if (!qxe_realpath (path, resolved_path))
|
|
428
|
1369 {
|
|
|
1370 /* Didn't resolve it -- have to do it one component at a time. */
|
|
|
1371 /* "realpath" is a typically useless, stupid un*x piece of crap.
|
|
|
1372 It claims to return a useful value in the "error" case, but since
|
|
|
1373 there is no indication provided of how far along the pathname
|
|
|
1374 the function went before erring, there is no way to use the
|
|
442
|
1375 partial result returned. What a piece of junk.
|
|
|
1376
|
|
|
1377 The above comment refers to historical versions of
|
|
|
1378 realpath(). The Unix98 specs state:
|
|
|
1379
|
|
|
1380 "On successful completion, realpath() returns a
|
|
|
1381 pointer to the resolved name. Otherwise, realpath()
|
|
|
1382 returns a null pointer and sets errno to indicate the
|
|
|
1383 error, and the contents of the buffer pointed to by
|
|
|
1384 resolved_name are undefined."
|
|
|
1385
|
|
771
|
1386 Since we depend on undocumented semantics of various system
|
|
|
1387 realpath()s, we just use our own version in realpath.c. */
|
|
428
|
1388 for (;;)
|
|
|
1389 {
|
|
867
|
1390 Ibyte *pos;
|
|
446
|
1391
|
|
657
|
1392 #ifdef WIN32_FILENAMES
|
|
446
|
1393 if (IS_DRIVE (p[0]) && IS_DEVICE_SEP (p[1])
|
|
|
1394 && IS_DIRECTORY_SEP (p[2]))
|
|
|
1395 /* don't test c: on windows */
|
|
|
1396 p = p+2;
|
|
|
1397 else if (IS_DIRECTORY_SEP (p[0]) && IS_DIRECTORY_SEP (p[1]))
|
|
|
1398 /* start after // */
|
|
|
1399 p = p+1;
|
|
|
1400 #endif
|
|
|
1401 for (pos = p + 1; pos < path + elen; pos++)
|
|
|
1402 if (IS_DIRECTORY_SEP (*pos))
|
|
|
1403 {
|
|
|
1404 *(p = pos) = 0;
|
|
|
1405 break;
|
|
|
1406 }
|
|
|
1407 if (p != pos)
|
|
|
1408 p = 0;
|
|
428
|
1409
|
|
771
|
1410 if (qxe_realpath (path, resolved_path))
|
|
428
|
1411 {
|
|
|
1412 if (p)
|
|
446
|
1413 *p = DIRECTORY_SEP;
|
|
428
|
1414 else
|
|
|
1415 break;
|
|
|
1416
|
|
|
1417 }
|
|
|
1418 else if (errno == ENOENT || errno == EACCES)
|
|
|
1419 {
|
|
|
1420 /* Failed on this component. Just tack on the rest of
|
|
|
1421 the string and we are done. */
|
|
771
|
1422 int rlen = qxestrlen (resolved_path);
|
|
428
|
1423
|
|
|
1424 /* "On failure, it returns NULL, sets errno to indicate
|
|
|
1425 the error, and places in resolved_path the absolute pathname
|
|
|
1426 of the path component which could not be resolved." */
|
|
442
|
1427
|
|
|
1428 if (p)
|
|
428
|
1429 {
|
|
|
1430 int plen = elen - (p - path);
|
|
|
1431
|
|
446
|
1432 if (rlen > 1 && IS_DIRECTORY_SEP (resolved_path[rlen - 1]))
|
|
428
|
1433 rlen = rlen - 1;
|
|
|
1434
|
|
|
1435 if (plen + rlen + 1 > countof (resolved_path))
|
|
|
1436 goto toolong;
|
|
|
1437
|
|
446
|
1438 resolved_path[rlen] = DIRECTORY_SEP;
|
|
428
|
1439 memcpy (resolved_path + rlen + 1, p + 1, plen + 1 - 1);
|
|
|
1440 }
|
|
|
1441 break;
|
|
|
1442 }
|
|
|
1443 else
|
|
|
1444 goto lose;
|
|
|
1445 }
|
|
|
1446 }
|
|
|
1447
|
|
|
1448 {
|
|
442
|
1449 Lisp_Object resolved_name;
|
|
771
|
1450 int rlen = qxestrlen (resolved_path);
|
|
826
|
1451 if (elen > 0 && IS_DIRECTORY_SEP (string_byte (expanded_name, elen - 1))
|
|
446
|
1452 && !(rlen > 0 && IS_DIRECTORY_SEP (resolved_path[rlen - 1])))
|
|
428
|
1453 {
|
|
|
1454 if (rlen + 1 > countof (resolved_path))
|
|
|
1455 goto toolong;
|
|
446
|
1456 resolved_path[rlen++] = DIRECTORY_SEP;
|
|
442
|
1457 resolved_path[rlen] = '\0';
|
|
428
|
1458 }
|
|
771
|
1459 resolved_name = make_string (resolved_path, rlen);
|
|
442
|
1460 RETURN_UNGCPRO (resolved_name);
|
|
428
|
1461 }
|
|
|
1462
|
|
|
1463 toolong:
|
|
|
1464 errno = ENAMETOOLONG;
|
|
|
1465 goto lose;
|
|
|
1466 lose:
|
|
563
|
1467 report_file_error ("Finding truename", expanded_name);
|
|
428
|
1468 }
|
|
442
|
1469 RETURN_UNGCPRO (Qnil);
|
|
428
|
1470 }
|
|
|
1471
|
|
|
1472
|
|
|
1473 DEFUN ("substitute-in-file-name", Fsubstitute_in_file_name, 1, 1, 0, /*
|
|
|
1474 Substitute environment variables referred to in FILENAME.
|
|
|
1475 `$FOO' where FOO is an environment variable name means to substitute
|
|
|
1476 the value of that variable. The variable name should be terminated
|
|
444
|
1477 with a character, not a letter, digit or underscore; otherwise, enclose
|
|
428
|
1478 the entire variable name in braces.
|
|
|
1479 If `/~' appears, all of FILENAME through that `/' is discarded.
|
|
|
1480 */
|
|
444
|
1481 (filename))
|
|
428
|
1482 {
|
|
442
|
1483 /* This function can GC. GC checked 2000-07-28 ben. */
|
|
867
|
1484 Ibyte *nm;
|
|
|
1485
|
|
|
1486 Ibyte *s, *p, *o, *x, *endp;
|
|
|
1487 Ibyte *target = 0;
|
|
428
|
1488 int total = 0;
|
|
|
1489 int substituted = 0;
|
|
867
|
1490 Ibyte *xnm;
|
|
428
|
1491 Lisp_Object handler;
|
|
|
1492
|
|
444
|
1493 CHECK_STRING (filename);
|
|
428
|
1494
|
|
|
1495 /* If the file name has special constructs in it,
|
|
|
1496 call the corresponding file handler. */
|
|
444
|
1497 handler = Ffind_file_name_handler (filename, Qsubstitute_in_file_name);
|
|
428
|
1498 if (!NILP (handler))
|
|
|
1499 return call2_check_string_or_nil (handler, Qsubstitute_in_file_name,
|
|
444
|
1500 filename);
|
|
|
1501
|
|
|
1502 nm = XSTRING_DATA (filename);
|
|
|
1503 endp = nm + XSTRING_LENGTH (filename);
|
|
428
|
1504
|
|
|
1505 /* If /~ or // appears, discard everything through first slash. */
|
|
|
1506
|
|
|
1507 for (p = nm; p != endp; p++)
|
|
|
1508 {
|
|
|
1509 if ((p[0] == '~'
|
|
657
|
1510 #if defined (WIN32_FILENAMES)
|
|
440
|
1511 /* // at start of file name is meaningful in WindowsNT systems */
|
|
428
|
1512 || (IS_DIRECTORY_SEP (p[0]) && p - 1 != nm)
|
|
657
|
1513 #else /* not (WIN32_FILENAMES) */
|
|
428
|
1514 || IS_DIRECTORY_SEP (p[0])
|
|
657
|
1515 #endif /* not (WIN32_FILENAMES) */
|
|
428
|
1516 )
|
|
|
1517 && p != nm
|
|
|
1518 && (IS_DIRECTORY_SEP (p[-1])))
|
|
|
1519 {
|
|
|
1520 nm = p;
|
|
|
1521 substituted = 1;
|
|
|
1522 }
|
|
657
|
1523 #ifdef WIN32_FILENAMES
|
|
428
|
1524 /* see comment in expand-file-name about drive specifiers */
|
|
|
1525 else if (IS_DRIVE (p[0]) && p[1] == ':'
|
|
|
1526 && p > nm && IS_DIRECTORY_SEP (p[-1]))
|
|
|
1527 {
|
|
|
1528 nm = p;
|
|
|
1529 substituted = 1;
|
|
|
1530 }
|
|
657
|
1531 #endif /* WIN32_FILENAMES */
|
|
428
|
1532 }
|
|
|
1533
|
|
|
1534 /* See if any variables are substituted into the string
|
|
|
1535 and find the total length of their values in `total' */
|
|
|
1536
|
|
|
1537 for (p = nm; p != endp;)
|
|
|
1538 if (*p != '$')
|
|
|
1539 p++;
|
|
|
1540 else
|
|
|
1541 {
|
|
|
1542 p++;
|
|
|
1543 if (p == endp)
|
|
|
1544 goto badsubst;
|
|
|
1545 else if (*p == '$')
|
|
|
1546 {
|
|
|
1547 /* "$$" means a single "$" */
|
|
|
1548 p++;
|
|
|
1549 total -= 1;
|
|
|
1550 substituted = 1;
|
|
|
1551 continue;
|
|
|
1552 }
|
|
|
1553 else if (*p == '{')
|
|
|
1554 {
|
|
|
1555 o = ++p;
|
|
|
1556 while (p != endp && *p != '}') p++;
|
|
|
1557 if (*p != '}') goto missingclose;
|
|
|
1558 s = p;
|
|
|
1559 }
|
|
|
1560 else
|
|
|
1561 {
|
|
|
1562 o = p;
|
|
|
1563 while (p != endp && (isalnum (*p) || *p == '_')) p++;
|
|
|
1564 s = p;
|
|
|
1565 }
|
|
|
1566
|
|
|
1567 /* Copy out the variable name */
|
|
867
|
1568 target = (Ibyte *) ALLOCA (s - o + 1);
|
|
771
|
1569 qxestrncpy (target, o, s - o);
|
|
428
|
1570 target[s - o] = 0;
|
|
442
|
1571 #ifdef WIN32_NATIVE
|
|
1204
|
1572 qxestrupr (target); /* $home == $HOME etc. */
|
|
442
|
1573 #endif /* WIN32_NATIVE */
|
|
428
|
1574
|
|
|
1575 /* Get variable value */
|
|
867
|
1576 o = egetenv ((CIbyte *) target);
|
|
428
|
1577 if (!o) goto badvar;
|
|
771
|
1578 total += qxestrlen (o);
|
|
428
|
1579 substituted = 1;
|
|
|
1580 }
|
|
|
1581
|
|
|
1582 if (!substituted)
|
|
444
|
1583 return filename;
|
|
|
1584
|
|
|
1585 /* If substitution required, recopy the filename and do it */
|
|
428
|
1586 /* Make space in stack frame for the new copy */
|
|
867
|
1587 xnm = (Ibyte *) ALLOCA (XSTRING_LENGTH (filename) + total + 1);
|
|
428
|
1588 x = xnm;
|
|
|
1589
|
|
|
1590 /* Copy the rest of the name through, replacing $ constructs with values */
|
|
|
1591 for (p = nm; *p;)
|
|
|
1592 if (*p != '$')
|
|
|
1593 *x++ = *p++;
|
|
|
1594 else
|
|
|
1595 {
|
|
|
1596 p++;
|
|
|
1597 if (p == endp)
|
|
|
1598 goto badsubst;
|
|
|
1599 else if (*p == '$')
|
|
|
1600 {
|
|
|
1601 *x++ = *p++;
|
|
|
1602 continue;
|
|
|
1603 }
|
|
|
1604 else if (*p == '{')
|
|
|
1605 {
|
|
|
1606 o = ++p;
|
|
|
1607 while (p != endp && *p != '}') p++;
|
|
|
1608 if (*p != '}') goto missingclose;
|
|
|
1609 s = p++;
|
|
|
1610 }
|
|
|
1611 else
|
|
|
1612 {
|
|
|
1613 o = p;
|
|
|
1614 while (p != endp && (isalnum (*p) || *p == '_')) p++;
|
|
|
1615 s = p;
|
|
|
1616 }
|
|
|
1617
|
|
|
1618 /* Copy out the variable name */
|
|
867
|
1619 target = (Ibyte *) ALLOCA (s - o + 1);
|
|
771
|
1620 qxestrncpy (target, o, s - o);
|
|
428
|
1621 target[s - o] = 0;
|
|
442
|
1622 #ifdef WIN32_NATIVE
|
|
1204
|
1623 qxestrupr (target); /* $home == $HOME etc. */
|
|
442
|
1624 #endif /* WIN32_NATIVE */
|
|
428
|
1625
|
|
|
1626 /* Get variable value */
|
|
867
|
1627 o = egetenv ((CIbyte *) target);
|
|
428
|
1628 if (!o)
|
|
|
1629 goto badvar;
|
|
|
1630
|
|
771
|
1631 qxestrcpy (x, o);
|
|
|
1632 x += qxestrlen (o);
|
|
428
|
1633 }
|
|
|
1634
|
|
|
1635 *x = 0;
|
|
|
1636
|
|
|
1637 /* If /~ or // appears, discard everything through first slash. */
|
|
|
1638
|
|
|
1639 for (p = xnm; p != x; p++)
|
|
|
1640 if ((p[0] == '~'
|
|
657
|
1641 #if defined (WIN32_FILENAMES)
|
|
428
|
1642 || (IS_DIRECTORY_SEP (p[0]) && p - 1 != xnm)
|
|
657
|
1643 #else /* not WIN32_FILENAMES */
|
|
428
|
1644 || IS_DIRECTORY_SEP (p[0])
|
|
657
|
1645 #endif /* not WIN32_FILENAMES */
|
|
428
|
1646 )
|
|
|
1647 /* don't do p[-1] if that would go off the beginning --jwz */
|
|
|
1648 && p != nm && p > xnm && IS_DIRECTORY_SEP (p[-1]))
|
|
|
1649 xnm = p;
|
|
657
|
1650 #ifdef WIN32_FILENAMES
|
|
428
|
1651 else if (IS_DRIVE (p[0]) && p[1] == ':'
|
|
|
1652 && p > nm && IS_DIRECTORY_SEP (p[-1]))
|
|
|
1653 xnm = p;
|
|
|
1654 #endif
|
|
|
1655
|
|
|
1656 return make_string (xnm, x - xnm);
|
|
|
1657
|
|
|
1658 badsubst:
|
|
444
|
1659 syntax_error ("Bad format environment-variable substitution", filename);
|
|
428
|
1660 missingclose:
|
|
442
|
1661 syntax_error ("Missing \"}\" in environment-variable substitution",
|
|
444
|
1662 filename);
|
|
428
|
1663 badvar:
|
|
442
|
1664 syntax_error_2 ("Substituting nonexistent environment variable",
|
|
771
|
1665 filename, build_intstring (target));
|
|
428
|
1666
|
|
1204
|
1667 RETURN_NOT_REACHED (Qnil);
|
|
428
|
1668 }
|
|
|
1669
|
|
|
1670 /* A slightly faster and more convenient way to get
|
|
|
1671 (directory-file-name (expand-file-name FOO)). */
|
|
|
1672
|
|
|
1673 Lisp_Object
|
|
|
1674 expand_and_dir_to_file (Lisp_Object filename, Lisp_Object defdir)
|
|
|
1675 {
|
|
442
|
1676 /* This function can call Lisp. GC checked 2000-07-28 ben */
|
|
428
|
1677 Lisp_Object abspath;
|
|
|
1678 struct gcpro gcpro1;
|
|
|
1679
|
|
|
1680 abspath = Fexpand_file_name (filename, defdir);
|
|
|
1681 GCPRO1 (abspath);
|
|
|
1682 /* Remove final slash, if any (unless path is root).
|
|
|
1683 stat behaves differently depending! */
|
|
|
1684 if (XSTRING_LENGTH (abspath) > 1
|
|
826
|
1685 && IS_DIRECTORY_SEP (string_byte (abspath, XSTRING_LENGTH (abspath) - 1))
|
|
|
1686 && !IS_DEVICE_SEP (string_byte (abspath, XSTRING_LENGTH (abspath) - 2)))
|
|
428
|
1687 /* We cannot take shortcuts; they might be wrong for magic file names. */
|
|
|
1688 abspath = Fdirectory_file_name (abspath);
|
|
|
1689 UNGCPRO;
|
|
|
1690 return abspath;
|
|
|
1691 }
|
|
|
1692
|
|
|
1693 /* Signal an error if the file ABSNAME already exists.
|
|
|
1694 If INTERACTIVE is nonzero, ask the user whether to proceed,
|
|
|
1695 and bypass the error if the user says to go ahead.
|
|
|
1696 QUERYSTRING is a name for the action that is being considered
|
|
|
1697 to alter the file.
|
|
|
1698 *STATPTR is used to store the stat information if the file exists.
|
|
|
1699 If the file does not exist, STATPTR->st_mode is set to 0. */
|
|
|
1700
|
|
|
1701 static void
|
|
1333
|
1702 barf_or_query_if_file_exists (Lisp_Object absname, const CIbyte *querystring,
|
|
428
|
1703 int interactive, struct stat *statptr)
|
|
|
1704 {
|
|
442
|
1705 /* This function can call Lisp. GC checked 2000-07-28 ben */
|
|
428
|
1706 struct stat statbuf;
|
|
|
1707
|
|
|
1708 /* stat is a good way to tell whether the file exists,
|
|
|
1709 regardless of what access permissions it has. */
|
|
771
|
1710 if (qxe_stat (XSTRING_DATA (absname), &statbuf) >= 0)
|
|
428
|
1711 {
|
|
|
1712 Lisp_Object tem;
|
|
|
1713
|
|
|
1714 if (interactive)
|
|
|
1715 {
|
|
|
1716 Lisp_Object prompt;
|
|
|
1717 struct gcpro gcpro1;
|
|
|
1718
|
|
771
|
1719 prompt =
|
|
|
1720 emacs_sprintf_string
|
|
|
1721 (CGETTEXT ("File %s already exists; %s anyway? "),
|
|
|
1722 XSTRING_DATA (absname), CGETTEXT (querystring));
|
|
428
|
1723
|
|
|
1724 GCPRO1 (prompt);
|
|
|
1725 tem = call1 (Qyes_or_no_p, prompt);
|
|
|
1726 UNGCPRO;
|
|
|
1727 }
|
|
|
1728 else
|
|
|
1729 tem = Qnil;
|
|
|
1730
|
|
|
1731 if (NILP (tem))
|
|
|
1732 Fsignal (Qfile_already_exists,
|
|
771
|
1733 list2 (build_msg_string ("File already exists"),
|
|
428
|
1734 absname));
|
|
|
1735 if (statptr)
|
|
|
1736 *statptr = statbuf;
|
|
|
1737 }
|
|
|
1738 else
|
|
|
1739 {
|
|
|
1740 if (statptr)
|
|
|
1741 statptr->st_mode = 0;
|
|
|
1742 }
|
|
|
1743 return;
|
|
|
1744 }
|
|
|
1745
|
|
|
1746 DEFUN ("copy-file", Fcopy_file, 2, 4,
|
|
|
1747 "fCopy file: \nFCopy %s to file: \np\nP", /*
|
|
444
|
1748 Copy FILENAME to NEWNAME. Both args must be strings.
|
|
428
|
1749 Signals a `file-already-exists' error if file NEWNAME already exists,
|
|
|
1750 unless a third argument OK-IF-ALREADY-EXISTS is supplied and non-nil.
|
|
|
1751 A number as third arg means request confirmation if NEWNAME already exists.
|
|
|
1752 This is what happens in interactive use with M-x.
|
|
|
1753 Fourth arg KEEP-TIME non-nil means give the new file the same
|
|
|
1754 last-modified time as the old one. (This works on only some systems.)
|
|
|
1755 A prefix arg makes KEEP-TIME non-nil.
|
|
|
1756 */
|
|
|
1757 (filename, newname, ok_if_already_exists, keep_time))
|
|
|
1758 {
|
|
442
|
1759 /* This function can call Lisp. GC checked 2000-07-28 ben */
|
|
428
|
1760 int ifd, ofd, n;
|
|
|
1761 char buf[16 * 1024];
|
|
|
1762 struct stat st, out_st;
|
|
|
1763 Lisp_Object handler;
|
|
|
1764 int speccount = specpdl_depth ();
|
|
|
1765 struct gcpro gcpro1, gcpro2;
|
|
|
1766 /* Lisp_Object args[6]; */
|
|
|
1767 int input_file_statable_p;
|
|
|
1768
|
|
|
1769 GCPRO2 (filename, newname);
|
|
|
1770 CHECK_STRING (filename);
|
|
|
1771 CHECK_STRING (newname);
|
|
|
1772 filename = Fexpand_file_name (filename, Qnil);
|
|
|
1773 newname = Fexpand_file_name (newname, Qnil);
|
|
|
1774
|
|
|
1775 /* If the input file name has special constructs in it,
|
|
|
1776 call the corresponding file handler. */
|
|
|
1777 handler = Ffind_file_name_handler (filename, Qcopy_file);
|
|
|
1778 /* Likewise for output file name. */
|
|
|
1779 if (NILP (handler))
|
|
|
1780 handler = Ffind_file_name_handler (newname, Qcopy_file);
|
|
|
1781 if (!NILP (handler))
|
|
|
1782 {
|
|
|
1783 UNGCPRO;
|
|
|
1784 return call5 (handler, Qcopy_file, filename, newname,
|
|
|
1785 ok_if_already_exists, keep_time);
|
|
|
1786 }
|
|
|
1787
|
|
|
1788 /* When second argument is a directory, copy the file into it.
|
|
|
1789 (copy-file "foo" "bar/") == (copy-file "foo" "bar/foo")
|
|
|
1790 */
|
|
|
1791 if (!NILP (Ffile_directory_p (newname)))
|
|
|
1792 {
|
|
|
1793 Lisp_Object args[3];
|
|
|
1794 struct gcpro ngcpro1;
|
|
|
1795 int i = 1;
|
|
|
1796
|
|
|
1797 args[0] = newname;
|
|
|
1798 args[1] = Qnil; args[2] = Qnil;
|
|
|
1799 NGCPRO1 (*args);
|
|
|
1800 ngcpro1.nvars = 3;
|
|
826
|
1801 if (!IS_DIRECTORY_SEP (string_byte (newname,
|
|
442
|
1802 XSTRING_LENGTH (newname) - 1)))
|
|
|
1803
|
|
|
1804 args[i++] = Fchar_to_string (Vdirectory_sep_char);
|
|
428
|
1805 args[i++] = Ffile_name_nondirectory (filename);
|
|
|
1806 newname = Fconcat (i, args);
|
|
|
1807 NUNGCPRO;
|
|
|
1808 }
|
|
|
1809
|
|
|
1810 if (NILP (ok_if_already_exists)
|
|
|
1811 || INTP (ok_if_already_exists))
|
|
|
1812 barf_or_query_if_file_exists (newname, "copy to it",
|
|
|
1813 INTP (ok_if_already_exists), &out_st);
|
|
771
|
1814 else if (qxe_stat (XSTRING_DATA (newname), &out_st) < 0)
|
|
428
|
1815 out_st.st_mode = 0;
|
|
|
1816
|
|
771
|
1817 ifd = qxe_interruptible_open (XSTRING_DATA (filename),
|
|
|
1818 O_RDONLY | OPEN_BINARY, 0);
|
|
428
|
1819 if (ifd < 0)
|
|
563
|
1820 report_file_error ("Opening input file", filename);
|
|
428
|
1821
|
|
|
1822 record_unwind_protect (close_file_unwind, make_int (ifd));
|
|
|
1823
|
|
|
1824 /* We can only copy regular files and symbolic links. Other files are not
|
|
|
1825 copyable by us. */
|
|
771
|
1826 input_file_statable_p = (qxe_fstat (ifd, &st) >= 0);
|
|
428
|
1827
|
|
442
|
1828 #ifndef WIN32_NATIVE
|
|
428
|
1829 if (out_st.st_mode != 0
|
|
|
1830 && st.st_dev == out_st.st_dev && st.st_ino == out_st.st_ino)
|
|
|
1831 {
|
|
|
1832 errno = 0;
|
|
|
1833 report_file_error ("Input and output files are the same",
|
|
563
|
1834 list3 (Qunbound, filename, newname));
|
|
428
|
1835 }
|
|
|
1836 #endif
|
|
|
1837
|
|
|
1838 #if defined (S_ISREG) && defined (S_ISLNK)
|
|
|
1839 if (input_file_statable_p)
|
|
|
1840 {
|
|
|
1841 if (!(S_ISREG (st.st_mode))
|
|
|
1842 /* XEmacs: have to allow S_ISCHR in order to copy /dev/null */
|
|
|
1843 #ifdef S_ISCHR
|
|
|
1844 && !(S_ISCHR (st.st_mode))
|
|
|
1845 #endif
|
|
|
1846 && !(S_ISLNK (st.st_mode)))
|
|
|
1847 {
|
|
|
1848 #if defined (EISDIR)
|
|
|
1849 /* Get a better looking error message. */
|
|
|
1850 errno = EISDIR;
|
|
|
1851 #endif /* EISDIR */
|
|
563
|
1852 report_file_error ("Non-regular file", filename);
|
|
428
|
1853 }
|
|
|
1854 }
|
|
|
1855 #endif /* S_ISREG && S_ISLNK */
|
|
|
1856
|
|
771
|
1857 ofd = qxe_open (XSTRING_DATA (newname),
|
|
|
1858 O_WRONLY | O_CREAT | O_TRUNC | OPEN_BINARY, CREAT_MODE);
|
|
428
|
1859 if (ofd < 0)
|
|
563
|
1860 report_file_error ("Opening output file", newname);
|
|
428
|
1861
|
|
|
1862 {
|
|
|
1863 Lisp_Object ofd_locative = noseeum_cons (make_int (ofd), Qnil);
|
|
|
1864
|
|
|
1865 record_unwind_protect (close_file_unwind, ofd_locative);
|
|
|
1866
|
|
|
1867 while ((n = read_allowing_quit (ifd, buf, sizeof (buf))) > 0)
|
|
|
1868 {
|
|
|
1869 if (write_allowing_quit (ofd, buf, n) != n)
|
|
563
|
1870 report_file_error ("I/O error", newname);
|
|
428
|
1871 }
|
|
|
1872
|
|
|
1873 /* Closing the output clobbers the file times on some systems. */
|
|
771
|
1874 if (retry_close (ofd) < 0)
|
|
563
|
1875 report_file_error ("I/O error", newname);
|
|
428
|
1876
|
|
|
1877 if (input_file_statable_p)
|
|
|
1878 {
|
|
442
|
1879 if (!NILP (keep_time))
|
|
|
1880 {
|
|
|
1881 EMACS_TIME atime, mtime;
|
|
|
1882 EMACS_SET_SECS_USECS (atime, st.st_atime, 0);
|
|
|
1883 EMACS_SET_SECS_USECS (mtime, st.st_mtime, 0);
|
|
592
|
1884 if (set_file_times (newname, atime, mtime))
|
|
|
1885 report_file_error ("I/O error", list1 (newname));
|
|
442
|
1886 }
|
|
771
|
1887 qxe_chmod (XSTRING_DATA (newname), st.st_mode & 07777);
|
|
428
|
1888 }
|
|
|
1889
|
|
|
1890 /* We'll close it by hand */
|
|
|
1891 XCAR (ofd_locative) = Qnil;
|
|
|
1892
|
|
|
1893 /* Close ifd */
|
|
771
|
1894 unbind_to (speccount);
|
|
428
|
1895 }
|
|
|
1896
|
|
|
1897 UNGCPRO;
|
|
|
1898 return Qnil;
|
|
|
1899 }
|
|
|
1900
|
|
|
1901 DEFUN ("make-directory-internal", Fmake_directory_internal, 1, 1, 0, /*
|
|
|
1902 Create a directory. One argument, a file name string.
|
|
|
1903 */
|
|
|
1904 (dirname_))
|
|
|
1905 {
|
|
|
1906 /* This function can GC. GC checked 1997.04.06. */
|
|
|
1907 Lisp_Object handler;
|
|
|
1908 struct gcpro gcpro1;
|
|
771
|
1909 DECLARE_EISTRING (dir);
|
|
428
|
1910
|
|
|
1911 CHECK_STRING (dirname_);
|
|
|
1912 dirname_ = Fexpand_file_name (dirname_, Qnil);
|
|
|
1913
|
|
|
1914 GCPRO1 (dirname_);
|
|
|
1915 handler = Ffind_file_name_handler (dirname_, Qmake_directory_internal);
|
|
|
1916 UNGCPRO;
|
|
|
1917 if (!NILP (handler))
|
|
|
1918 return (call2 (handler, Qmake_directory_internal, dirname_));
|
|
|
1919
|
|
771
|
1920 eicpy_lstr (dir, dirname_);
|
|
|
1921 if (eigetch_char (dir, eicharlen (dir) - 1) == '/')
|
|
|
1922 eidel (dir, eilen (dir) - 1, -1, 1, -1);
|
|
|
1923
|
|
|
1924 if (qxe_mkdir (eidata (dir), 0777) != 0)
|
|
563
|
1925 report_file_error ("Creating directory", dirname_);
|
|
428
|
1926
|
|
|
1927 return Qnil;
|
|
|
1928 }
|
|
|
1929
|
|
|
1930 DEFUN ("delete-directory", Fdelete_directory, 1, 1, "FDelete directory: ", /*
|
|
|
1931 Delete a directory. One argument, a file name or directory name string.
|
|
|
1932 */
|
|
|
1933 (dirname_))
|
|
|
1934 {
|
|
|
1935 /* This function can GC. GC checked 1997.04.06. */
|
|
|
1936 Lisp_Object handler;
|
|
|
1937 struct gcpro gcpro1;
|
|
|
1938
|
|
|
1939 CHECK_STRING (dirname_);
|
|
|
1940
|
|
|
1941 GCPRO1 (dirname_);
|
|
|
1942 dirname_ = Fexpand_file_name (dirname_, Qnil);
|
|
|
1943 dirname_ = Fdirectory_file_name (dirname_);
|
|
|
1944
|
|
|
1945 handler = Ffind_file_name_handler (dirname_, Qdelete_directory);
|
|
|
1946 UNGCPRO;
|
|
|
1947 if (!NILP (handler))
|
|
|
1948 return (call2 (handler, Qdelete_directory, dirname_));
|
|
|
1949
|
|
771
|
1950 if (qxe_rmdir (XSTRING_DATA (dirname_)) != 0)
|
|
563
|
1951 report_file_error ("Removing directory", dirname_);
|
|
428
|
1952
|
|
|
1953 return Qnil;
|
|
|
1954 }
|
|
|
1955
|
|
|
1956 DEFUN ("delete-file", Fdelete_file, 1, 1, "fDelete file: ", /*
|
|
442
|
1957 Delete the file named FILENAME (a string).
|
|
|
1958 If FILENAME has multiple names, it continues to exist with the other names.
|
|
428
|
1959 */
|
|
|
1960 (filename))
|
|
|
1961 {
|
|
|
1962 /* This function can GC. GC checked 1997.04.06. */
|
|
|
1963 Lisp_Object handler;
|
|
|
1964 struct gcpro gcpro1;
|
|
|
1965
|
|
|
1966 CHECK_STRING (filename);
|
|
|
1967 filename = Fexpand_file_name (filename, Qnil);
|
|
|
1968
|
|
|
1969 GCPRO1 (filename);
|
|
|
1970 handler = Ffind_file_name_handler (filename, Qdelete_file);
|
|
|
1971 UNGCPRO;
|
|
|
1972 if (!NILP (handler))
|
|
|
1973 return call2 (handler, Qdelete_file, filename);
|
|
|
1974
|
|
771
|
1975 if (0 > qxe_unlink (XSTRING_DATA (filename)))
|
|
563
|
1976 report_file_error ("Removing old name", filename);
|
|
428
|
1977 return Qnil;
|
|
|
1978 }
|
|
|
1979
|
|
|
1980 static Lisp_Object
|
|
|
1981 internal_delete_file_1 (Lisp_Object ignore, Lisp_Object ignore2)
|
|
|
1982 {
|
|
|
1983 return Qt;
|
|
|
1984 }
|
|
|
1985
|
|
|
1986 /* Delete file FILENAME, returning 1 if successful and 0 if failed. */
|
|
|
1987
|
|
|
1988 int
|
|
|
1989 internal_delete_file (Lisp_Object filename)
|
|
|
1990 {
|
|
|
1991 /* This function can GC. GC checked 1997.04.06. */
|
|
|
1992 return NILP (condition_case_1 (Qt, Fdelete_file, filename,
|
|
|
1993 internal_delete_file_1, Qnil));
|
|
|
1994 }
|
|
|
1995
|
|
|
1996 DEFUN ("rename-file", Frename_file, 2, 3,
|
|
|
1997 "fRename file: \nFRename %s to file: \np", /*
|
|
444
|
1998 Rename FILENAME as NEWNAME. Both args must be strings.
|
|
|
1999 If file has names other than FILENAME, it continues to have those names.
|
|
428
|
2000 Signals a `file-already-exists' error if a file NEWNAME already exists
|
|
|
2001 unless optional third argument OK-IF-ALREADY-EXISTS is non-nil.
|
|
|
2002 A number as third arg means request confirmation if NEWNAME already exists.
|
|
|
2003 This is what happens in interactive use with M-x.
|
|
|
2004 */
|
|
|
2005 (filename, newname, ok_if_already_exists))
|
|
|
2006 {
|
|
|
2007 /* This function can GC. GC checked 1997.04.06. */
|
|
|
2008 Lisp_Object handler;
|
|
|
2009 struct gcpro gcpro1, gcpro2;
|
|
|
2010
|
|
|
2011 GCPRO2 (filename, newname);
|
|
|
2012 CHECK_STRING (filename);
|
|
|
2013 CHECK_STRING (newname);
|
|
|
2014 filename = Fexpand_file_name (filename, Qnil);
|
|
|
2015 newname = Fexpand_file_name (newname, Qnil);
|
|
|
2016
|
|
|
2017 /* If the file name has special constructs in it,
|
|
|
2018 call the corresponding file handler. */
|
|
|
2019 handler = Ffind_file_name_handler (filename, Qrename_file);
|
|
|
2020 if (NILP (handler))
|
|
|
2021 handler = Ffind_file_name_handler (newname, Qrename_file);
|
|
|
2022 if (!NILP (handler))
|
|
|
2023 {
|
|
|
2024 UNGCPRO;
|
|
|
2025 return call4 (handler, Qrename_file,
|
|
|
2026 filename, newname, ok_if_already_exists);
|
|
|
2027 }
|
|
|
2028
|
|
|
2029 /* When second argument is a directory, rename the file into it.
|
|
|
2030 (rename-file "foo" "bar/") == (rename-file "foo" "bar/foo")
|
|
|
2031 */
|
|
|
2032 if (!NILP (Ffile_directory_p (newname)))
|
|
|
2033 {
|
|
|
2034 Lisp_Object args[3];
|
|
|
2035 struct gcpro ngcpro1;
|
|
|
2036 int i = 1;
|
|
|
2037
|
|
|
2038 args[0] = newname;
|
|
|
2039 args[1] = Qnil; args[2] = Qnil;
|
|
|
2040 NGCPRO1 (*args);
|
|
|
2041 ngcpro1.nvars = 3;
|
|
826
|
2042 if (string_byte (newname, XSTRING_LENGTH (newname) - 1) != '/')
|
|
428
|
2043 args[i++] = build_string ("/");
|
|
|
2044 args[i++] = Ffile_name_nondirectory (filename);
|
|
|
2045 newname = Fconcat (i, args);
|
|
|
2046 NUNGCPRO;
|
|
|
2047 }
|
|
|
2048
|
|
|
2049 if (NILP (ok_if_already_exists)
|
|
|
2050 || INTP (ok_if_already_exists))
|
|
|
2051 barf_or_query_if_file_exists (newname, "rename to it",
|
|
|
2052 INTP (ok_if_already_exists), 0);
|
|
|
2053
|
|
442
|
2054 /* We have configure check for rename() and emulate using
|
|
|
2055 link()/unlink() if necessary. */
|
|
771
|
2056 if (0 > qxe_rename (XSTRING_DATA (filename), XSTRING_DATA (newname)))
|
|
428
|
2057 {
|
|
|
2058 if (errno == EXDEV)
|
|
|
2059 {
|
|
|
2060 Fcopy_file (filename, newname,
|
|
|
2061 /* We have already prompted if it was an integer,
|
|
|
2062 so don't have copy-file prompt again. */
|
|
|
2063 (NILP (ok_if_already_exists) ? Qnil : Qt),
|
|
|
2064 Qt);
|
|
|
2065 Fdelete_file (filename);
|
|
|
2066 }
|
|
|
2067 else
|
|
|
2068 {
|
|
563
|
2069 report_file_error ("Renaming", list3 (Qunbound, filename, newname));
|
|
428
|
2070 }
|
|
|
2071 }
|
|
|
2072 UNGCPRO;
|
|
|
2073 return Qnil;
|
|
|
2074 }
|
|
|
2075
|
|
|
2076 DEFUN ("add-name-to-file", Fadd_name_to_file, 2, 3,
|
|
|
2077 "fAdd name to file: \nFName to add to %s: \np", /*
|
|
444
|
2078 Give FILENAME additional name NEWNAME. Both args must be strings.
|
|
428
|
2079 Signals a `file-already-exists' error if a file NEWNAME already exists
|
|
|
2080 unless optional third argument OK-IF-ALREADY-EXISTS is non-nil.
|
|
|
2081 A number as third arg means request confirmation if NEWNAME already exists.
|
|
|
2082 This is what happens in interactive use with M-x.
|
|
|
2083 */
|
|
|
2084 (filename, newname, ok_if_already_exists))
|
|
|
2085 {
|
|
|
2086 /* This function can GC. GC checked 1997.04.06. */
|
|
|
2087 Lisp_Object handler;
|
|
|
2088 struct gcpro gcpro1, gcpro2;
|
|
|
2089
|
|
|
2090 GCPRO2 (filename, newname);
|
|
|
2091 CHECK_STRING (filename);
|
|
|
2092 CHECK_STRING (newname);
|
|
|
2093 filename = Fexpand_file_name (filename, Qnil);
|
|
|
2094 newname = Fexpand_file_name (newname, Qnil);
|
|
|
2095
|
|
|
2096 /* If the file name has special constructs in it,
|
|
|
2097 call the corresponding file handler. */
|
|
|
2098 handler = Ffind_file_name_handler (filename, Qadd_name_to_file);
|
|
|
2099 if (!NILP (handler))
|
|
|
2100 RETURN_UNGCPRO (call4 (handler, Qadd_name_to_file, filename,
|
|
|
2101 newname, ok_if_already_exists));
|
|
|
2102
|
|
|
2103 /* If the new name has special constructs in it,
|
|
|
2104 call the corresponding file handler. */
|
|
|
2105 handler = Ffind_file_name_handler (newname, Qadd_name_to_file);
|
|
|
2106 if (!NILP (handler))
|
|
|
2107 RETURN_UNGCPRO (call4 (handler, Qadd_name_to_file, filename,
|
|
|
2108 newname, ok_if_already_exists));
|
|
|
2109
|
|
|
2110 if (NILP (ok_if_already_exists)
|
|
|
2111 || INTP (ok_if_already_exists))
|
|
|
2112 barf_or_query_if_file_exists (newname, "make it a new name",
|
|
|
2113 INTP (ok_if_already_exists), 0);
|
|
771
|
2114 /* #### Emacs 20.6 contains an implementation of link() in w32.c.
|
|
|
2115 Need to port. */
|
|
|
2116 #ifndef HAVE_LINK
|
|
563
|
2117 signal_error_2 (Qunimplemented, "Adding new name", filename, newname);
|
|
771
|
2118 #else /* HAVE_LINK */
|
|
|
2119 qxe_unlink (XSTRING_DATA (newname));
|
|
|
2120 if (0 > qxe_link (XSTRING_DATA (filename), XSTRING_DATA (newname)))
|
|
428
|
2121 {
|
|
|
2122 report_file_error ("Adding new name",
|
|
563
|
2123 list3 (Qunbound, filename, newname));
|
|
428
|
2124 }
|
|
771
|
2125 #endif /* HAVE_LINK */
|
|
428
|
2126
|
|
|
2127 UNGCPRO;
|
|
|
2128 return Qnil;
|
|
|
2129 }
|
|
|
2130
|
|
|
2131 DEFUN ("make-symbolic-link", Fmake_symbolic_link, 2, 3,
|
|
|
2132 "FMake symbolic link to file: \nFMake symbolic link to file %s: \np", /*
|
|
|
2133 Make a symbolic link to FILENAME, named LINKNAME. Both args strings.
|
|
|
2134 Signals a `file-already-exists' error if a file LINKNAME already exists
|
|
|
2135 unless optional third argument OK-IF-ALREADY-EXISTS is non-nil.
|
|
|
2136 A number as third arg means request confirmation if LINKNAME already exists.
|
|
|
2137 This happens for interactive use with M-x.
|
|
|
2138 */
|
|
|
2139 (filename, linkname, ok_if_already_exists))
|
|
|
2140 {
|
|
|
2141 /* This function can GC. GC checked 1997.06.04. */
|
|
442
|
2142 /* XEmacs change: run handlers even if local machine doesn't have symlinks */
|
|
428
|
2143 Lisp_Object handler;
|
|
|
2144 struct gcpro gcpro1, gcpro2;
|
|
|
2145
|
|
|
2146 GCPRO2 (filename, linkname);
|
|
|
2147 CHECK_STRING (filename);
|
|
|
2148 CHECK_STRING (linkname);
|
|
|
2149 /* If the link target has a ~, we must expand it to get
|
|
|
2150 a truly valid file name. Otherwise, do not expand;
|
|
|
2151 we want to permit links to relative file names. */
|
|
826
|
2152 if (string_byte (filename, 0) == '~')
|
|
428
|
2153 filename = Fexpand_file_name (filename, Qnil);
|
|
|
2154 linkname = Fexpand_file_name (linkname, Qnil);
|
|
|
2155
|
|
|
2156 /* If the file name has special constructs in it,
|
|
|
2157 call the corresponding file handler. */
|
|
|
2158 handler = Ffind_file_name_handler (filename, Qmake_symbolic_link);
|
|
|
2159 if (!NILP (handler))
|
|
|
2160 RETURN_UNGCPRO (call4 (handler, Qmake_symbolic_link, filename, linkname,
|
|
|
2161 ok_if_already_exists));
|
|
|
2162
|
|
|
2163 /* If the new link name has special constructs in it,
|
|
|
2164 call the corresponding file handler. */
|
|
|
2165 handler = Ffind_file_name_handler (linkname, Qmake_symbolic_link);
|
|
|
2166 if (!NILP (handler))
|
|
|
2167 RETURN_UNGCPRO (call4 (handler, Qmake_symbolic_link, filename,
|
|
|
2168 linkname, ok_if_already_exists));
|
|
|
2169
|
|
771
|
2170 #ifdef HAVE_SYMLINK
|
|
428
|
2171 if (NILP (ok_if_already_exists)
|
|
|
2172 || INTP (ok_if_already_exists))
|
|
|
2173 barf_or_query_if_file_exists (linkname, "make it a link",
|
|
|
2174 INTP (ok_if_already_exists), 0);
|
|
|
2175
|
|
771
|
2176 qxe_unlink (XSTRING_DATA (linkname));
|
|
|
2177 if (0 > qxe_symlink (XSTRING_DATA (filename),
|
|
|
2178 XSTRING_DATA (linkname)))
|
|
428
|
2179 {
|
|
|
2180 report_file_error ("Making symbolic link",
|
|
563
|
2181 list3 (Qunbound, filename, linkname));
|
|
428
|
2182 }
|
|
771
|
2183 #endif
|
|
442
|
2184
|
|
428
|
2185 UNGCPRO;
|
|
|
2186 return Qnil;
|
|
|
2187 }
|
|
|
2188
|
|
|
2189 #ifdef HPUX_NET
|
|
|
2190
|
|
|
2191 DEFUN ("sysnetunam", Fsysnetunam, 2, 2, 0, /*
|
|
|
2192 Open a network connection to PATH using LOGIN as the login string.
|
|
|
2193 */
|
|
|
2194 (path, login))
|
|
|
2195 {
|
|
|
2196 int netresult;
|
|
1333
|
2197 const Extbyte *path_ext;
|
|
|
2198 const Extbyte *login_ext;
|
|
428
|
2199
|
|
|
2200 CHECK_STRING (path);
|
|
|
2201 CHECK_STRING (login);
|
|
|
2202
|
|
|
2203 /* netunam, being a strange-o system call only used once, is not
|
|
|
2204 encapsulated. */
|
|
440
|
2205
|
|
442
|
2206 LISP_STRING_TO_EXTERNAL (path, path_ext, Qfile_name);
|
|
|
2207 LISP_STRING_TO_EXTERNAL (login, login_ext, Qnative);
|
|
440
|
2208
|
|
|
2209 netresult = netunam (path_ext, login_ext);
|
|
|
2210
|
|
|
2211 return netresult == -1 ? Qnil : Qt;
|
|
428
|
2212 }
|
|
|
2213 #endif /* HPUX_NET */
|
|
|
2214
|
|
|
2215 DEFUN ("file-name-absolute-p", Ffile_name_absolute_p, 1, 1, 0, /*
|
|
|
2216 Return t if file FILENAME specifies an absolute path name.
|
|
|
2217 On Unix, this is a name starting with a `/' or a `~'.
|
|
|
2218 */
|
|
|
2219 (filename))
|
|
|
2220 {
|
|
|
2221 /* This function does not GC */
|
|
867
|
2222 Ibyte *ptr;
|
|
428
|
2223
|
|
|
2224 CHECK_STRING (filename);
|
|
|
2225 ptr = XSTRING_DATA (filename);
|
|
|
2226 return (IS_DIRECTORY_SEP (*ptr) || *ptr == '~'
|
|
657
|
2227 #ifdef WIN32_FILENAMES
|
|
428
|
2228 || (IS_DRIVE (*ptr) && ptr[1] == ':' && IS_DIRECTORY_SEP (ptr[2]))
|
|
|
2229 #endif
|
|
|
2230 ) ? Qt : Qnil;
|
|
|
2231 }
|
|
|
2232
|
|
|
2233 /* Return nonzero if file FILENAME exists and can be executed. */
|
|
|
2234
|
|
|
2235 static int
|
|
771
|
2236 check_executable (Lisp_Object filename)
|
|
428
|
2237 {
|
|
442
|
2238 #ifdef WIN32_NATIVE
|
|
428
|
2239 struct stat st;
|
|
771
|
2240 if (qxe_stat (XSTRING_DATA (filename), &st) < 0)
|
|
428
|
2241 return 0;
|
|
|
2242 return ((st.st_mode & S_IEXEC) != 0);
|
|
442
|
2243 #else /* not WIN32_NATIVE */
|
|
428
|
2244 #ifdef HAVE_EACCESS
|
|
771
|
2245 return qxe_eaccess (XSTRING_DATA (filename), X_OK) >= 0;
|
|
428
|
2246 #else
|
|
|
2247 /* Access isn't quite right because it uses the real uid
|
|
|
2248 and we really want to test with the effective uid.
|
|
|
2249 But Unix doesn't give us a right way to do it. */
|
|
771
|
2250 return qxe_access (XSTRING_DATA (filename), X_OK) >= 0;
|
|
428
|
2251 #endif /* HAVE_EACCESS */
|
|
442
|
2252 #endif /* not WIN32_NATIVE */
|
|
428
|
2253 }
|
|
|
2254
|
|
|
2255 /* Return nonzero if file FILENAME exists and can be written. */
|
|
|
2256
|
|
|
2257 static int
|
|
867
|
2258 check_writable (const Ibyte *filename)
|
|
428
|
2259 {
|
|
|
2260 #ifdef HAVE_EACCESS
|
|
771
|
2261 return (qxe_eaccess (filename, W_OK) >= 0);
|
|
428
|
2262 #else
|
|
|
2263 /* Access isn't quite right because it uses the real uid
|
|
|
2264 and we really want to test with the effective uid.
|
|
|
2265 But Unix doesn't give us a right way to do it.
|
|
|
2266 Opening with O_WRONLY could work for an ordinary file,
|
|
|
2267 but would lose for directories. */
|
|
771
|
2268 return (qxe_access (filename, W_OK) >= 0);
|
|
428
|
2269 #endif
|
|
|
2270 }
|
|
|
2271
|
|
|
2272 DEFUN ("file-exists-p", Ffile_exists_p, 1, 1, 0, /*
|
|
|
2273 Return t if file FILENAME exists. (This does not mean you can read it.)
|
|
|
2274 See also `file-readable-p' and `file-attributes'.
|
|
|
2275 */
|
|
|
2276 (filename))
|
|
|
2277 {
|
|
442
|
2278 /* This function can call lisp; GC checked 2000-07-11 ben */
|
|
428
|
2279 Lisp_Object abspath;
|
|
|
2280 Lisp_Object handler;
|
|
|
2281 struct stat statbuf;
|
|
|
2282 struct gcpro gcpro1;
|
|
|
2283
|
|
|
2284 CHECK_STRING (filename);
|
|
|
2285 abspath = Fexpand_file_name (filename, Qnil);
|
|
|
2286
|
|
|
2287 /* If the file name has special constructs in it,
|
|
|
2288 call the corresponding file handler. */
|
|
|
2289 GCPRO1 (abspath);
|
|
|
2290 handler = Ffind_file_name_handler (abspath, Qfile_exists_p);
|
|
|
2291 UNGCPRO;
|
|
|
2292 if (!NILP (handler))
|
|
|
2293 return call2 (handler, Qfile_exists_p, abspath);
|
|
|
2294
|
|
771
|
2295 return qxe_stat (XSTRING_DATA (abspath), &statbuf) >= 0 ? Qt : Qnil;
|
|
428
|
2296 }
|
|
|
2297
|
|
|
2298 DEFUN ("file-executable-p", Ffile_executable_p, 1, 1, 0, /*
|
|
|
2299 Return t if FILENAME can be executed by you.
|
|
|
2300 For a directory, this means you can access files in that directory.
|
|
|
2301 */
|
|
|
2302 (filename))
|
|
|
2303
|
|
|
2304 {
|
|
442
|
2305 /* This function can GC. GC checked 07-11-2000 ben. */
|
|
428
|
2306 Lisp_Object abspath;
|
|
|
2307 Lisp_Object handler;
|
|
|
2308 struct gcpro gcpro1;
|
|
|
2309
|
|
|
2310 CHECK_STRING (filename);
|
|
|
2311 abspath = Fexpand_file_name (filename, Qnil);
|
|
|
2312
|
|
|
2313 /* If the file name has special constructs in it,
|
|
|
2314 call the corresponding file handler. */
|
|
|
2315 GCPRO1 (abspath);
|
|
|
2316 handler = Ffind_file_name_handler (abspath, Qfile_executable_p);
|
|
|
2317 UNGCPRO;
|
|
|
2318 if (!NILP (handler))
|
|
|
2319 return call2 (handler, Qfile_executable_p, abspath);
|
|
|
2320
|
|
771
|
2321 return check_executable (abspath) ? Qt : Qnil;
|
|
428
|
2322 }
|
|
|
2323
|
|
|
2324 DEFUN ("file-readable-p", Ffile_readable_p, 1, 1, 0, /*
|
|
|
2325 Return t if file FILENAME exists and you can read it.
|
|
|
2326 See also `file-exists-p' and `file-attributes'.
|
|
|
2327 */
|
|
|
2328 (filename))
|
|
|
2329 {
|
|
|
2330 /* This function can GC */
|
|
|
2331 Lisp_Object abspath = Qnil;
|
|
|
2332 Lisp_Object handler;
|
|
|
2333 struct gcpro gcpro1;
|
|
|
2334 GCPRO1 (abspath);
|
|
|
2335
|
|
|
2336 CHECK_STRING (filename);
|
|
|
2337 abspath = Fexpand_file_name (filename, Qnil);
|
|
|
2338
|
|
|
2339 /* If the file name has special constructs in it,
|
|
|
2340 call the corresponding file handler. */
|
|
|
2341 handler = Ffind_file_name_handler (abspath, Qfile_readable_p);
|
|
|
2342 if (!NILP (handler))
|
|
|
2343 RETURN_UNGCPRO (call2 (handler, Qfile_readable_p, abspath));
|
|
|
2344
|
|
657
|
2345 #if defined(WIN32_FILENAMES)
|
|
428
|
2346 /* Under MS-DOS and Windows, open does not work for directories. */
|
|
|
2347 UNGCPRO;
|
|
771
|
2348 if (qxe_access (XSTRING_DATA (abspath), 0) == 0)
|
|
428
|
2349 return Qt;
|
|
|
2350 else
|
|
|
2351 return Qnil;
|
|
657
|
2352 #else /* not WIN32_FILENAMES */
|
|
428
|
2353 {
|
|
771
|
2354 int desc = qxe_interruptible_open (XSTRING_DATA (abspath),
|
|
|
2355 O_RDONLY | OPEN_BINARY, 0);
|
|
428
|
2356 UNGCPRO;
|
|
|
2357 if (desc < 0)
|
|
|
2358 return Qnil;
|
|
771
|
2359 retry_close (desc);
|
|
428
|
2360 return Qt;
|
|
|
2361 }
|
|
657
|
2362 #endif /* not WIN32_FILENAMES */
|
|
428
|
2363 }
|
|
|
2364
|
|
|
2365 /* Having this before file-symlink-p mysteriously caused it to be forgotten
|
|
|
2366 on the RT/PC. */
|
|
|
2367 DEFUN ("file-writable-p", Ffile_writable_p, 1, 1, 0, /*
|
|
|
2368 Return t if file FILENAME can be written or created by you.
|
|
|
2369 */
|
|
|
2370 (filename))
|
|
|
2371 {
|
|
|
2372 /* This function can GC. GC checked 1997.04.10. */
|
|
|
2373 Lisp_Object abspath, dir;
|
|
|
2374 Lisp_Object handler;
|
|
|
2375 struct stat statbuf;
|
|
|
2376 struct gcpro gcpro1;
|
|
|
2377
|
|
|
2378 CHECK_STRING (filename);
|
|
|
2379 abspath = Fexpand_file_name (filename, Qnil);
|
|
|
2380
|
|
|
2381 /* If the file name has special constructs in it,
|
|
|
2382 call the corresponding file handler. */
|
|
|
2383 GCPRO1 (abspath);
|
|
|
2384 handler = Ffind_file_name_handler (abspath, Qfile_writable_p);
|
|
|
2385 UNGCPRO;
|
|
|
2386 if (!NILP (handler))
|
|
|
2387 return call2 (handler, Qfile_writable_p, abspath);
|
|
|
2388
|
|
771
|
2389 if (qxe_stat (XSTRING_DATA (abspath), &statbuf) >= 0)
|
|
|
2390 return (check_writable (XSTRING_DATA (abspath))
|
|
428
|
2391 ? Qt : Qnil);
|
|
|
2392
|
|
|
2393
|
|
|
2394 GCPRO1 (abspath);
|
|
|
2395 dir = Ffile_name_directory (abspath);
|
|
|
2396 UNGCPRO;
|
|
867
|
2397 return (check_writable (!NILP (dir) ? XSTRING_DATA (dir) : (Ibyte *) "")
|
|
428
|
2398 ? Qt : Qnil);
|
|
|
2399 }
|
|
|
2400
|
|
|
2401 DEFUN ("file-symlink-p", Ffile_symlink_p, 1, 1, 0, /*
|
|
|
2402 Return non-nil if file FILENAME is the name of a symbolic link.
|
|
|
2403 The value is the name of the file to which it is linked.
|
|
|
2404 Otherwise returns nil.
|
|
|
2405 */
|
|
|
2406 (filename))
|
|
|
2407 {
|
|
|
2408 /* This function can GC. GC checked 1997.04.10. */
|
|
442
|
2409 /* XEmacs change: run handlers even if local machine doesn't have symlinks */
|
|
771
|
2410 #ifdef HAVE_READLINK
|
|
867
|
2411 Ibyte *buf;
|
|
428
|
2412 int bufsize;
|
|
|
2413 int valsize;
|
|
|
2414 Lisp_Object val;
|
|
442
|
2415 #endif
|
|
428
|
2416 Lisp_Object handler;
|
|
|
2417 struct gcpro gcpro1;
|
|
|
2418
|
|
|
2419 CHECK_STRING (filename);
|
|
|
2420 filename = Fexpand_file_name (filename, Qnil);
|
|
|
2421
|
|
|
2422 /* If the file name has special constructs in it,
|
|
|
2423 call the corresponding file handler. */
|
|
|
2424 GCPRO1 (filename);
|
|
|
2425 handler = Ffind_file_name_handler (filename, Qfile_symlink_p);
|
|
|
2426 UNGCPRO;
|
|
|
2427 if (!NILP (handler))
|
|
|
2428 return call2 (handler, Qfile_symlink_p, filename);
|
|
|
2429
|
|
771
|
2430 #ifdef HAVE_READLINK
|
|
428
|
2431 bufsize = 100;
|
|
|
2432 while (1)
|
|
|
2433 {
|
|
867
|
2434 buf = xnew_array_and_zero (Ibyte, bufsize);
|
|
771
|
2435 valsize = qxe_readlink (XSTRING_DATA (filename),
|
|
|
2436 buf, bufsize);
|
|
428
|
2437 if (valsize < bufsize) break;
|
|
|
2438 /* Buffer was not long enough */
|
|
|
2439 xfree (buf);
|
|
|
2440 bufsize *= 2;
|
|
|
2441 }
|
|
|
2442 if (valsize == -1)
|
|
|
2443 {
|
|
|
2444 xfree (buf);
|
|
|
2445 return Qnil;
|
|
|
2446 }
|
|
771
|
2447 val = make_string (buf, valsize);
|
|
428
|
2448 xfree (buf);
|
|
|
2449 return val;
|
|
771
|
2450 #else /* not HAVE_READLINK */
|
|
428
|
2451 return Qnil;
|
|
771
|
2452 #endif /* not HAVE_READLINK */
|
|
428
|
2453 }
|
|
|
2454
|
|
|
2455 DEFUN ("file-directory-p", Ffile_directory_p, 1, 1, 0, /*
|
|
|
2456 Return t if file FILENAME is the name of a directory as a file.
|
|
|
2457 A directory name spec may be given instead; then the value is t
|
|
|
2458 if the directory so specified exists and really is a directory.
|
|
|
2459 */
|
|
|
2460 (filename))
|
|
|
2461 {
|
|
|
2462 /* This function can GC. GC checked 1997.04.10. */
|
|
|
2463 Lisp_Object abspath;
|
|
|
2464 struct stat st;
|
|
|
2465 Lisp_Object handler;
|
|
|
2466 struct gcpro gcpro1;
|
|
|
2467
|
|
|
2468 GCPRO1 (current_buffer->directory);
|
|
|
2469 abspath = expand_and_dir_to_file (filename,
|
|
|
2470 current_buffer->directory);
|
|
|
2471 UNGCPRO;
|
|
|
2472
|
|
|
2473 /* If the file name has special constructs in it,
|
|
|
2474 call the corresponding file handler. */
|
|
|
2475 GCPRO1 (abspath);
|
|
|
2476 handler = Ffind_file_name_handler (abspath, Qfile_directory_p);
|
|
|
2477 UNGCPRO;
|
|
|
2478 if (!NILP (handler))
|
|
|
2479 return call2 (handler, Qfile_directory_p, abspath);
|
|
|
2480
|
|
771
|
2481 if (qxe_stat (XSTRING_DATA (abspath), &st) < 0)
|
|
428
|
2482 return Qnil;
|
|
|
2483 return (st.st_mode & S_IFMT) == S_IFDIR ? Qt : Qnil;
|
|
|
2484 }
|
|
|
2485
|
|
|
2486 DEFUN ("file-accessible-directory-p", Ffile_accessible_directory_p, 1, 1, 0, /*
|
|
|
2487 Return t if file FILENAME is the name of a directory as a file,
|
|
|
2488 and files in that directory can be opened by you. In order to use a
|
|
|
2489 directory as a buffer's current directory, this predicate must return true.
|
|
|
2490 A directory name spec may be given instead; then the value is t
|
|
|
2491 if the directory so specified exists and really is a readable and
|
|
|
2492 searchable directory.
|
|
|
2493 */
|
|
|
2494 (filename))
|
|
|
2495 {
|
|
|
2496 /* This function can GC. GC checked 1997.04.10. */
|
|
|
2497 Lisp_Object handler;
|
|
|
2498
|
|
|
2499 /* If the file name has special constructs in it,
|
|
|
2500 call the corresponding file handler. */
|
|
|
2501 handler = Ffind_file_name_handler (filename, Qfile_accessible_directory_p);
|
|
|
2502 if (!NILP (handler))
|
|
|
2503 return call2 (handler, Qfile_accessible_directory_p,
|
|
|
2504 filename);
|
|
|
2505
|
|
442
|
2506 #if !defined(WIN32_NATIVE)
|
|
428
|
2507 if (NILP (Ffile_directory_p (filename)))
|
|
|
2508 return (Qnil);
|
|
|
2509 else
|
|
|
2510 return Ffile_executable_p (filename);
|
|
|
2511 #else
|
|
|
2512 {
|
|
|
2513 int tem;
|
|
|
2514 struct gcpro gcpro1;
|
|
|
2515 /* It's an unlikely combination, but yes we really do need to gcpro:
|
|
|
2516 Suppose that file-accessible-directory-p has no handler, but
|
|
|
2517 file-directory-p does have a handler; this handler causes a GC which
|
|
|
2518 relocates the string in `filename'; and finally file-directory-p
|
|
|
2519 returns non-nil. Then we would end up passing a garbaged string
|
|
|
2520 to file-executable-p. */
|
|
|
2521 GCPRO1 (filename);
|
|
|
2522 tem = (NILP (Ffile_directory_p (filename))
|
|
|
2523 || NILP (Ffile_executable_p (filename)));
|
|
|
2524 UNGCPRO;
|
|
|
2525 return tem ? Qnil : Qt;
|
|
|
2526 }
|
|
442
|
2527 #endif /* !defined(WIN32_NATIVE) */
|
|
428
|
2528 }
|
|
|
2529
|
|
|
2530 DEFUN ("file-regular-p", Ffile_regular_p, 1, 1, 0, /*
|
|
|
2531 Return t if file FILENAME is the name of a regular file.
|
|
|
2532 This is the sort of file that holds an ordinary stream of data bytes.
|
|
|
2533 */
|
|
|
2534 (filename))
|
|
|
2535 {
|
|
|
2536 /* This function can GC. GC checked 1997.04.10. */
|
|
|
2537 Lisp_Object abspath;
|
|
|
2538 struct stat st;
|
|
|
2539 Lisp_Object handler;
|
|
|
2540 struct gcpro gcpro1;
|
|
|
2541
|
|
|
2542 GCPRO1 (current_buffer->directory);
|
|
|
2543 abspath = expand_and_dir_to_file (filename, current_buffer->directory);
|
|
|
2544 UNGCPRO;
|
|
|
2545
|
|
|
2546 /* If the file name has special constructs in it,
|
|
|
2547 call the corresponding file handler. */
|
|
|
2548 GCPRO1 (abspath);
|
|
|
2549 handler = Ffind_file_name_handler (abspath, Qfile_regular_p);
|
|
|
2550 UNGCPRO;
|
|
|
2551 if (!NILP (handler))
|
|
|
2552 return call2 (handler, Qfile_regular_p, abspath);
|
|
|
2553
|
|
771
|
2554 if (qxe_stat (XSTRING_DATA (abspath), &st) < 0)
|
|
428
|
2555 return Qnil;
|
|
|
2556 return (st.st_mode & S_IFMT) == S_IFREG ? Qt : Qnil;
|
|
|
2557 }
|
|
|
2558
|
|
|
2559 DEFUN ("file-modes", Ffile_modes, 1, 1, 0, /*
|
|
444
|
2560 Return mode bits of file named FILENAME, as an integer.
|
|
428
|
2561 */
|
|
|
2562 (filename))
|
|
|
2563 {
|
|
|
2564 /* This function can GC. GC checked 1997.04.10. */
|
|
|
2565 Lisp_Object abspath;
|
|
|
2566 struct stat st;
|
|
|
2567 Lisp_Object handler;
|
|
|
2568 struct gcpro gcpro1;
|
|
|
2569
|
|
|
2570 GCPRO1 (current_buffer->directory);
|
|
|
2571 abspath = expand_and_dir_to_file (filename,
|
|
|
2572 current_buffer->directory);
|
|
|
2573 UNGCPRO;
|
|
|
2574
|
|
|
2575 /* If the file name has special constructs in it,
|
|
|
2576 call the corresponding file handler. */
|
|
|
2577 GCPRO1 (abspath);
|
|
|
2578 handler = Ffind_file_name_handler (abspath, Qfile_modes);
|
|
|
2579 UNGCPRO;
|
|
|
2580 if (!NILP (handler))
|
|
|
2581 return call2 (handler, Qfile_modes, abspath);
|
|
|
2582
|
|
771
|
2583 if (qxe_stat (XSTRING_DATA (abspath), &st) < 0)
|
|
428
|
2584 return Qnil;
|
|
|
2585 /* Syncing with FSF 19.34.6 note: not in FSF, #if 0'ed out here. */
|
|
|
2586 #if 0
|
|
442
|
2587 #ifdef WIN32_NATIVE
|
|
771
|
2588 if (check_executable (abspath))
|
|
428
|
2589 st.st_mode |= S_IEXEC;
|
|
442
|
2590 #endif /* WIN32_NATIVE */
|
|
428
|
2591 #endif /* 0 */
|
|
|
2592
|
|
|
2593 return make_int (st.st_mode & 07777);
|
|
|
2594 }
|
|
|
2595
|
|
|
2596 DEFUN ("set-file-modes", Fset_file_modes, 2, 2, 0, /*
|
|
444
|
2597 Set mode bits of file named FILENAME to MODE (an integer).
|
|
428
|
2598 Only the 12 low bits of MODE are used.
|
|
|
2599 */
|
|
|
2600 (filename, mode))
|
|
|
2601 {
|
|
|
2602 /* This function can GC. GC checked 1997.04.10. */
|
|
|
2603 Lisp_Object abspath;
|
|
|
2604 Lisp_Object handler;
|
|
|
2605 struct gcpro gcpro1;
|
|
|
2606
|
|
|
2607 GCPRO1 (current_buffer->directory);
|
|
|
2608 abspath = Fexpand_file_name (filename, current_buffer->directory);
|
|
|
2609 UNGCPRO;
|
|
|
2610
|
|
|
2611 CHECK_INT (mode);
|
|
|
2612
|
|
|
2613 /* If the file name has special constructs in it,
|
|
|
2614 call the corresponding file handler. */
|
|
|
2615 GCPRO1 (abspath);
|
|
|
2616 handler = Ffind_file_name_handler (abspath, Qset_file_modes);
|
|
|
2617 UNGCPRO;
|
|
|
2618 if (!NILP (handler))
|
|
|
2619 return call3 (handler, Qset_file_modes, abspath, mode);
|
|
|
2620
|
|
771
|
2621 if (qxe_chmod (XSTRING_DATA (abspath), XINT (mode)) < 0)
|
|
563
|
2622 report_file_error ("Doing chmod", abspath);
|
|
428
|
2623
|
|
|
2624 return Qnil;
|
|
|
2625 }
|
|
|
2626
|
|
|
2627 DEFUN ("set-default-file-modes", Fset_default_file_modes, 1, 1, 0, /*
|
|
|
2628 Set the file permission bits for newly created files.
|
|
444
|
2629 The argument MODE should be an integer; if a bit in MODE is 1,
|
|
|
2630 subsequently created files will not have the permission corresponding
|
|
|
2631 to that bit enabled. Only the low 9 bits are used.
|
|
428
|
2632 This setting is inherited by subprocesses.
|
|
|
2633 */
|
|
|
2634 (mode))
|
|
|
2635 {
|
|
|
2636 CHECK_INT (mode);
|
|
|
2637
|
|
|
2638 umask ((~ XINT (mode)) & 0777);
|
|
|
2639
|
|
|
2640 return Qnil;
|
|
|
2641 }
|
|
|
2642
|
|
|
2643 DEFUN ("default-file-modes", Fdefault_file_modes, 0, 0, 0, /*
|
|
|
2644 Return the default file protection for created files.
|
|
|
2645 The umask value determines which permissions are enabled in newly
|
|
|
2646 created files. If a permission's bit in the umask is 1, subsequently
|
|
|
2647 created files will not have that permission enabled.
|
|
|
2648 */
|
|
|
2649 ())
|
|
|
2650 {
|
|
|
2651 int mode;
|
|
|
2652
|
|
|
2653 mode = umask (0);
|
|
|
2654 umask (mode);
|
|
|
2655
|
|
|
2656 return make_int ((~ mode) & 0777);
|
|
|
2657 }
|
|
|
2658
|
|
|
2659 DEFUN ("unix-sync", Funix_sync, 0, 0, "", /*
|
|
|
2660 Tell Unix to finish all pending disk updates.
|
|
|
2661 */
|
|
|
2662 ())
|
|
|
2663 {
|
|
442
|
2664 #ifndef WIN32_NATIVE
|
|
428
|
2665 sync ();
|
|
|
2666 #endif
|
|
|
2667 return Qnil;
|
|
|
2668 }
|
|
|
2669
|
|
|
2670
|
|
|
2671 DEFUN ("file-newer-than-file-p", Ffile_newer_than_file_p, 2, 2, 0, /*
|
|
|
2672 Return t if file FILE1 is newer than file FILE2.
|
|
|
2673 If FILE1 does not exist, the answer is nil;
|
|
|
2674 otherwise, if FILE2 does not exist, the answer is t.
|
|
|
2675 */
|
|
|
2676 (file1, file2))
|
|
|
2677 {
|
|
|
2678 /* This function can GC. GC checked 1997.04.10. */
|
|
|
2679 Lisp_Object abspath1, abspath2;
|
|
|
2680 struct stat st;
|
|
|
2681 int mtime1;
|
|
|
2682 Lisp_Object handler;
|
|
|
2683 struct gcpro gcpro1, gcpro2, gcpro3;
|
|
|
2684
|
|
|
2685 CHECK_STRING (file1);
|
|
|
2686 CHECK_STRING (file2);
|
|
|
2687
|
|
|
2688 abspath1 = Qnil;
|
|
|
2689 abspath2 = Qnil;
|
|
|
2690
|
|
|
2691 GCPRO3 (abspath1, abspath2, current_buffer->directory);
|
|
|
2692 abspath1 = expand_and_dir_to_file (file1, current_buffer->directory);
|
|
|
2693 abspath2 = expand_and_dir_to_file (file2, current_buffer->directory);
|
|
|
2694
|
|
|
2695 /* If the file name has special constructs in it,
|
|
|
2696 call the corresponding file handler. */
|
|
|
2697 handler = Ffind_file_name_handler (abspath1, Qfile_newer_than_file_p);
|
|
|
2698 if (NILP (handler))
|
|
|
2699 handler = Ffind_file_name_handler (abspath2, Qfile_newer_than_file_p);
|
|
|
2700 UNGCPRO;
|
|
|
2701 if (!NILP (handler))
|
|
|
2702 return call3 (handler, Qfile_newer_than_file_p, abspath1,
|
|
|
2703 abspath2);
|
|
|
2704
|
|
771
|
2705 if (qxe_stat (XSTRING_DATA (abspath1), &st) < 0)
|
|
428
|
2706 return Qnil;
|
|
|
2707
|
|
|
2708 mtime1 = st.st_mtime;
|
|
|
2709
|
|
771
|
2710 if (qxe_stat (XSTRING_DATA (abspath2), &st) < 0)
|
|
428
|
2711 return Qt;
|
|
|
2712
|
|
|
2713 return (mtime1 > st.st_mtime) ? Qt : Qnil;
|
|
|
2714 }
|
|
|
2715
|
|
|
2716
|
|
|
2717 /* Stack sizes > 2**16 is a good way to elicit compiler bugs */
|
|
|
2718 /* #define READ_BUF_SIZE (2 << 16) */
|
|
|
2719 #define READ_BUF_SIZE (1 << 15)
|
|
|
2720
|
|
|
2721 DEFUN ("insert-file-contents-internal", Finsert_file_contents_internal,
|
|
|
2722 1, 7, 0, /*
|
|
|
2723 Insert contents of file FILENAME after point; no coding-system frobbing.
|
|
|
2724 This function is identical to `insert-file-contents' except for the
|
|
771
|
2725 handling of the CODESYS and USED-CODESYS arguments.
|
|
|
2726
|
|
|
2727 The file is decoded according to CODESYS; if omitted, no conversion
|
|
|
2728 happens. If USED-CODESYS is non-nil, it should be a symbol, and the actual
|
|
|
2729 coding system that was used for the decoding is stored into it. It will in
|
|
|
2730 general be different from CODESYS if CODESYS specifies automatic encoding
|
|
|
2731 detection or end-of-line detection.
|
|
428
|
2732
|
|
444
|
2733 Currently START and END refer to byte positions (as opposed to character
|
|
771
|
2734 positions), even in Mule and under MS Windows. (Fixing this, particularly
|
|
|
2735 under Mule, is very difficult.)
|
|
428
|
2736 */
|
|
444
|
2737 (filename, visit, start, end, replace, codesys, used_codesys))
|
|
428
|
2738 {
|
|
|
2739 /* This function can call lisp */
|
|
|
2740 struct stat st;
|
|
|
2741 int fd;
|
|
|
2742 int saverrno = 0;
|
|
|
2743 Charcount inserted = 0;
|
|
|
2744 int speccount;
|
|
|
2745 struct gcpro gcpro1, gcpro2, gcpro3, gcpro4, gcpro5;
|
|
|
2746 Lisp_Object handler = Qnil, val;
|
|
|
2747 int total;
|
|
867
|
2748 Ibyte read_buf[READ_BUF_SIZE];
|
|
428
|
2749 int mc_count;
|
|
|
2750 struct buffer *buf = current_buffer;
|
|
|
2751 Lisp_Object curbuf;
|
|
|
2752 int not_regular = 0;
|
|
771
|
2753 int do_speedy_insert =
|
|
|
2754 coding_system_is_binary (Fget_coding_system (codesys));
|
|
428
|
2755
|
|
|
2756 if (buf->base_buffer && ! NILP (visit))
|
|
563
|
2757 invalid_operation ("Cannot do file visiting in an indirect buffer", Qunbound);
|
|
428
|
2758
|
|
|
2759 /* No need to call Fbarf_if_buffer_read_only() here.
|
|
|
2760 That's called in begin_multiple_change() or wherever. */
|
|
|
2761
|
|
|
2762 val = Qnil;
|
|
|
2763
|
|
|
2764 /* #### dmoore - should probably check in various places to see if
|
|
|
2765 curbuf was killed and if so signal an error? */
|
|
|
2766
|
|
793
|
2767 curbuf = wrap_buffer (buf);
|
|
428
|
2768
|
|
|
2769 GCPRO5 (filename, val, visit, handler, curbuf);
|
|
|
2770
|
|
|
2771 mc_count = (NILP (replace)) ?
|
|
|
2772 begin_multiple_change (buf, BUF_PT (buf), BUF_PT (buf)) :
|
|
|
2773 begin_multiple_change (buf, BUF_BEG (buf), BUF_Z (buf));
|
|
|
2774
|
|
|
2775 speccount = specpdl_depth (); /* begin_multiple_change also adds
|
|
|
2776 an unwind_protect */
|
|
|
2777
|
|
|
2778 filename = Fexpand_file_name (filename, Qnil);
|
|
|
2779
|
|
|
2780 /* If the file name has special constructs in it,
|
|
|
2781 call the corresponding file handler. */
|
|
|
2782 handler = Ffind_file_name_handler (filename, Qinsert_file_contents);
|
|
|
2783 if (!NILP (handler))
|
|
|
2784 {
|
|
|
2785 val = call6 (handler, Qinsert_file_contents, filename,
|
|
444
|
2786 visit, start, end, replace);
|
|
428
|
2787 goto handled;
|
|
|
2788 }
|
|
|
2789
|
|
|
2790 if (!NILP (used_codesys))
|
|
|
2791 CHECK_SYMBOL (used_codesys);
|
|
|
2792
|
|
444
|
2793 if ( (!NILP (start) || !NILP (end)) && !NILP (visit) )
|
|
563
|
2794 invalid_operation ("Attempt to visit less than an entire file", Qunbound);
|
|
428
|
2795
|
|
|
2796 fd = -1;
|
|
|
2797
|
|
771
|
2798 if (qxe_stat (XSTRING_DATA (filename), &st) < 0)
|
|
428
|
2799 {
|
|
771
|
2800 if (fd >= 0) retry_close (fd);
|
|
428
|
2801 badopen:
|
|
|
2802 if (NILP (visit))
|
|
563
|
2803 report_file_error ("Opening input file", filename);
|
|
428
|
2804 st.st_mtime = -1;
|
|
|
2805 goto notfound;
|
|
|
2806 }
|
|
|
2807
|
|
|
2808 #ifdef S_IFREG
|
|
|
2809 /* Signal an error if we are accessing a non-regular file, with
|
|
444
|
2810 REPLACE, START or END being non-nil. */
|
|
428
|
2811 if (!S_ISREG (st.st_mode))
|
|
|
2812 {
|
|
|
2813 not_regular = 1;
|
|
|
2814
|
|
|
2815 if (!NILP (visit))
|
|
|
2816 goto notfound;
|
|
|
2817
|
|
444
|
2818 if (!NILP (replace) || !NILP (start) || !NILP (end))
|
|
428
|
2819 {
|
|
|
2820 end_multiple_change (buf, mc_count);
|
|
|
2821
|
|
444
|
2822 RETURN_UNGCPRO
|
|
|
2823 (Fsignal (Qfile_error,
|
|
771
|
2824 list2 (build_msg_string("not a regular file"),
|
|
444
|
2825 filename)));
|
|
428
|
2826 }
|
|
|
2827 }
|
|
|
2828 #endif /* S_IFREG */
|
|
|
2829
|
|
444
|
2830 if (!NILP (start))
|
|
|
2831 CHECK_INT (start);
|
|
428
|
2832 else
|
|
444
|
2833 start = Qzero;
|
|
428
|
2834
|
|
|
2835 if (!NILP (end))
|
|
|
2836 CHECK_INT (end);
|
|
|
2837
|
|
|
2838 if (fd < 0)
|
|
|
2839 {
|
|
771
|
2840 if ((fd = qxe_interruptible_open (XSTRING_DATA (filename),
|
|
|
2841 O_RDONLY | OPEN_BINARY, 0)) < 0)
|
|
428
|
2842 goto badopen;
|
|
|
2843 }
|
|
|
2844
|
|
|
2845 /* Replacement should preserve point as it preserves markers. */
|
|
|
2846 if (!NILP (replace))
|
|
|
2847 record_unwind_protect (restore_point_unwind, Fpoint_marker (Qnil, Qnil));
|
|
|
2848
|
|
|
2849 record_unwind_protect (close_file_unwind, make_int (fd));
|
|
|
2850
|
|
|
2851 /* Supposedly happens on VMS. */
|
|
|
2852 if (st.st_size < 0)
|
|
563
|
2853 signal_error (Qfile_error, "File size is negative", Qunbound);
|
|
428
|
2854
|
|
|
2855 if (NILP (end))
|
|
|
2856 {
|
|
|
2857 if (!not_regular)
|
|
|
2858 {
|
|
|
2859 end = make_int (st.st_size);
|
|
|
2860 if (XINT (end) != st.st_size)
|
|
563
|
2861 out_of_memory ("Maximum buffer size exceeded", Qunbound);
|
|
428
|
2862 }
|
|
|
2863 }
|
|
|
2864
|
|
|
2865 /* If requested, replace the accessible part of the buffer
|
|
|
2866 with the file contents. Avoid replacing text at the
|
|
|
2867 beginning or end of the buffer that matches the file contents;
|
|
771
|
2868 that preserves markers pointing to the unchanged parts. */
|
|
|
2869 /* The replace-mode code is currently implemented by comparing the
|
|
|
2870 file on disk with the contents in the buffer, character by character.
|
|
|
2871 That works only if the characters on disk are exactly what will go into
|
|
|
2872 the buffer -- i.e. `binary' conversion.
|
|
|
2873
|
|
|
2874 FSF tries to implement this in all situations, even the non-binary
|
|
|
2875 conversion, by (in that case) loading the whole converted file into a
|
|
|
2876 separate memory area, then doing the comparison. I really don't see
|
|
|
2877 the point of this, and it will fail spectacularly if the file is many
|
|
|
2878 megabytes in size. To try to get around this, we could certainly read
|
|
|
2879 from the beginning and decode as necessary before comparing, but doing
|
|
|
2880 the same at the end gets very difficult because of the possibility of
|
|
|
2881 modal coding systems -- trying to decode data from any point forward
|
|
|
2882 without decoding previous data might always give you different results
|
|
|
2883 from starting at the beginning. We could try further tricks like
|
|
|
2884 keeping track of which coding systems are non-modal and providing some
|
|
|
2885 extra method for such coding systems to be given a chunk of data that
|
|
|
2886 came from a specified location in a specified file and ask the coding
|
|
|
2887 systems to return a "sync point" from which the data can be read
|
|
|
2888 forward and have results guaranteed to be the same as reading from the
|
|
|
2889 beginning to that point, but I really don't think it's worth it. If
|
|
|
2890 we implemented the FSF "brute-force" method, we would have to put a
|
|
|
2891 reasonable maximum file size on the files. Is any of this worth it?
|
|
|
2892 --ben
|
|
|
2893
|
|
|
2894 */
|
|
|
2895
|
|
428
|
2896 if (!NILP (replace))
|
|
|
2897 {
|
|
771
|
2898 if (!do_speedy_insert)
|
|
|
2899 buffer_delete_range (buf, BUF_BEG (buf), BUF_Z (buf),
|
|
|
2900 !NILP (visit) ? INSDEL_NO_LOCKING : 0);
|
|
|
2901 else
|
|
428
|
2902 {
|
|
771
|
2903 char buffer[1 << 14];
|
|
|
2904 Charbpos same_at_start = BUF_BEGV (buf);
|
|
|
2905 Charbpos same_at_end = BUF_ZV (buf);
|
|
|
2906 int overlap;
|
|
|
2907
|
|
|
2908 /* Count how many chars at the start of the file
|
|
|
2909 match the text at the beginning of the buffer. */
|
|
|
2910 while (1)
|
|
|
2911 {
|
|
|
2912 int nread;
|
|
|
2913 Charbpos charbpos;
|
|
|
2914 nread = read_allowing_quit (fd, buffer, sizeof (buffer));
|
|
|
2915 if (nread < 0)
|
|
|
2916 report_file_error ("Reading", filename);
|
|
|
2917 else if (nread == 0)
|
|
|
2918 break;
|
|
|
2919 charbpos = 0;
|
|
|
2920 while (charbpos < nread && same_at_start < BUF_ZV (buf)
|
|
814
|
2921 && BUF_FETCH_CHAR (buf, same_at_start) ==
|
|
|
2922 buffer[charbpos])
|
|
771
|
2923 same_at_start++, charbpos++;
|
|
|
2924 /* If we found a discrepancy, stop the scan.
|
|
|
2925 Otherwise loop around and scan the next bufferful. */
|
|
|
2926 if (charbpos != nread)
|
|
|
2927 break;
|
|
|
2928 }
|
|
|
2929 /* If the file matches the buffer completely,
|
|
|
2930 there's no need to replace anything. */
|
|
|
2931 if (same_at_start - BUF_BEGV (buf) == st.st_size)
|
|
|
2932 {
|
|
|
2933 retry_close (fd);
|
|
|
2934 unbind_to (speccount);
|
|
|
2935 /* Truncate the buffer to the size of the file. */
|
|
|
2936 buffer_delete_range (buf, same_at_start, same_at_end,
|
|
|
2937 !NILP (visit) ? INSDEL_NO_LOCKING : 0);
|
|
|
2938 goto handled;
|
|
|
2939 }
|
|
|
2940 /* Count how many chars at the end of the file
|
|
|
2941 match the text at the end of the buffer. */
|
|
|
2942 while (1)
|
|
|
2943 {
|
|
|
2944 int total_read, nread;
|
|
814
|
2945 Charcount charbpos, curpos, trial;
|
|
771
|
2946
|
|
|
2947 /* At what file position are we now scanning? */
|
|
|
2948 curpos = st.st_size - (BUF_ZV (buf) - same_at_end);
|
|
|
2949 /* If the entire file matches the buffer tail, stop the scan. */
|
|
|
2950 if (curpos == 0)
|
|
|
2951 break;
|
|
|
2952 /* How much can we scan in the next step? */
|
|
|
2953 trial = min (curpos, (Charbpos) sizeof (buffer));
|
|
|
2954 if (lseek (fd, curpos - trial, 0) < 0)
|
|
|
2955 report_file_error ("Setting file position", filename);
|
|
|
2956
|
|
|
2957 total_read = 0;
|
|
|
2958 while (total_read < trial)
|
|
|
2959 {
|
|
|
2960 nread = read_allowing_quit (fd, buffer + total_read,
|
|
|
2961 trial - total_read);
|
|
|
2962 if (nread <= 0)
|
|
|
2963 report_file_error ("IO error reading file", filename);
|
|
|
2964 total_read += nread;
|
|
|
2965 }
|
|
|
2966 /* Scan this bufferful from the end, comparing with
|
|
|
2967 the Emacs buffer. */
|
|
|
2968 charbpos = total_read;
|
|
|
2969 /* Compare with same_at_start to avoid counting some buffer text
|
|
|
2970 as matching both at the file's beginning and at the end. */
|
|
|
2971 while (charbpos > 0 && same_at_end > same_at_start
|
|
|
2972 && BUF_FETCH_CHAR (buf, same_at_end - 1) ==
|
|
|
2973 buffer[charbpos - 1])
|
|
|
2974 same_at_end--, charbpos--;
|
|
|
2975 /* If we found a discrepancy, stop the scan.
|
|
|
2976 Otherwise loop around and scan the preceding bufferful. */
|
|
|
2977 if (charbpos != 0)
|
|
|
2978 break;
|
|
|
2979 /* If display current starts at beginning of line,
|
|
|
2980 keep it that way. */
|
|
|
2981 if (XBUFFER (XWINDOW (Fselected_window (Qnil))->buffer) == buf)
|
|
|
2982 XWINDOW (Fselected_window (Qnil))->start_at_line_beg =
|
|
|
2983 !NILP (Fbolp (wrap_buffer (buf)));
|
|
|
2984 }
|
|
|
2985
|
|
|
2986 /* Don't try to reuse the same piece of text twice. */
|
|
|
2987 overlap = same_at_start - BUF_BEGV (buf) -
|
|
|
2988 (same_at_end + st.st_size - BUF_ZV (buf));
|
|
|
2989 if (overlap > 0)
|
|
|
2990 same_at_end += overlap;
|
|
|
2991
|
|
|
2992 /* Arrange to read only the nonmatching middle part of the file. */
|
|
|
2993 start = make_int (same_at_start - BUF_BEGV (buf));
|
|
|
2994 end = make_int (st.st_size - (BUF_ZV (buf) - same_at_end));
|
|
|
2995
|
|
428
|
2996 buffer_delete_range (buf, same_at_start, same_at_end,
|
|
|
2997 !NILP (visit) ? INSDEL_NO_LOCKING : 0);
|
|
771
|
2998 /* Insert from the file at the proper position. */
|
|
|
2999 BUF_SET_PT (buf, same_at_start);
|
|
428
|
3000 }
|
|
|
3001 }
|
|
|
3002
|
|
|
3003 if (!not_regular)
|
|
|
3004 {
|
|
444
|
3005 total = XINT (end) - XINT (start);
|
|
428
|
3006
|
|
|
3007 /* Make sure point-max won't overflow after this insertion. */
|
|
|
3008 if (total != XINT (make_int (total)))
|
|
563
|
3009 out_of_memory ("Maximum buffer size exceeded", Qunbound);
|
|
428
|
3010 }
|
|
|
3011 else
|
|
|
3012 /* For a special file, all we can do is guess. The value of -1
|
|
|
3013 will make the stream functions read as much as possible. */
|
|
|
3014 total = -1;
|
|
|
3015
|
|
444
|
3016 if (XINT (start) != 0
|
|
428
|
3017 /* why was this here? asked jwz. The reason is that the replace-mode
|
|
|
3018 connivings above will normally put the file pointer other than
|
|
|
3019 where it should be. */
|
|
771
|
3020 || (!NILP (replace) && do_speedy_insert))
|
|
428
|
3021 {
|
|
444
|
3022 if (lseek (fd, XINT (start), 0) < 0)
|
|
563
|
3023 report_file_error ("Setting file position", filename);
|
|
428
|
3024 }
|
|
|
3025
|
|
|
3026 {
|
|
665
|
3027 Charbpos cur_point = BUF_PT (buf);
|
|
428
|
3028 struct gcpro ngcpro1;
|
|
|
3029 Lisp_Object stream = make_filedesc_input_stream (fd, 0, total,
|
|
|
3030 LSTR_ALLOW_QUIT);
|
|
|
3031
|
|
|
3032 NGCPRO1 (stream);
|
|
|
3033 Lstream_set_buffering (XLSTREAM (stream), LSTREAM_BLOCKN_BUFFERED, 65536);
|
|
771
|
3034 stream = make_coding_input_stream
|
|
|
3035 (XLSTREAM (stream), get_coding_system_for_text_file (codesys, 1),
|
|
800
|
3036 CODING_DECODE, 0);
|
|
428
|
3037 Lstream_set_buffering (XLSTREAM (stream), LSTREAM_BLOCKN_BUFFERED, 65536);
|
|
|
3038
|
|
|
3039 record_unwind_protect (delete_stream_unwind, stream);
|
|
|
3040
|
|
|
3041 /* No need to limit the amount of stuff we attempt to read. (It would
|
|
|
3042 be incorrect, anyway, when Mule is enabled.) Instead, the limiting
|
|
|
3043 occurs inside of the filedesc stream. */
|
|
|
3044 while (1)
|
|
|
3045 {
|
|
665
|
3046 Bytecount this_len;
|
|
428
|
3047 Charcount cc_inserted;
|
|
|
3048
|
|
|
3049 QUIT;
|
|
|
3050 this_len = Lstream_read (XLSTREAM (stream), read_buf,
|
|
|
3051 sizeof (read_buf));
|
|
|
3052
|
|
|
3053 if (this_len <= 0)
|
|
|
3054 {
|
|
|
3055 if (this_len < 0)
|
|
|
3056 saverrno = errno;
|
|
|
3057 break;
|
|
|
3058 }
|
|
|
3059
|
|
|
3060 cc_inserted = buffer_insert_raw_string_1 (buf, cur_point, read_buf,
|
|
|
3061 this_len,
|
|
|
3062 !NILP (visit)
|
|
|
3063 ? INSDEL_NO_LOCKING : 0);
|
|
|
3064 inserted += cc_inserted;
|
|
|
3065 cur_point += cc_inserted;
|
|
|
3066 }
|
|
|
3067 if (!NILP (used_codesys))
|
|
|
3068 {
|
|
|
3069 Fset (used_codesys,
|
|
771
|
3070 XCODING_SYSTEM_NAME
|
|
|
3071 (coding_stream_detected_coding_system (XLSTREAM (stream))));
|
|
428
|
3072 }
|
|
|
3073 NUNGCPRO;
|
|
|
3074 }
|
|
|
3075
|
|
|
3076 /* Close the file/stream */
|
|
771
|
3077 unbind_to (speccount);
|
|
428
|
3078
|
|
|
3079 if (saverrno != 0)
|
|
|
3080 {
|
|
563
|
3081 errno = saverrno;
|
|
|
3082 report_file_error ("Reading", filename);
|
|
428
|
3083 }
|
|
|
3084
|
|
|
3085 notfound:
|
|
|
3086 handled:
|
|
|
3087
|
|
|
3088 end_multiple_change (buf, mc_count);
|
|
|
3089
|
|
|
3090 if (!NILP (visit))
|
|
|
3091 {
|
|
|
3092 if (!EQ (buf->undo_list, Qt))
|
|
|
3093 buf->undo_list = Qnil;
|
|
|
3094 if (NILP (handler))
|
|
|
3095 {
|
|
|
3096 buf->modtime = st.st_mtime;
|
|
|
3097 buf->filename = filename;
|
|
|
3098 /* XEmacs addition: */
|
|
|
3099 /* This function used to be in C, ostensibly so that
|
|
|
3100 it could be called here. But that's just silly.
|
|
|
3101 There's no reason C code can't call out to Lisp
|
|
|
3102 code, and it's a lot cleaner this way. */
|
|
444
|
3103 /* Note: compute-buffer-file-truename is called for
|
|
|
3104 side-effect! Its return value is intentionally
|
|
|
3105 ignored. */
|
|
428
|
3106 if (!NILP (Ffboundp (Qcompute_buffer_file_truename)))
|
|
771
|
3107 call1 (Qcompute_buffer_file_truename, wrap_buffer (buf));
|
|
428
|
3108 }
|
|
|
3109 BUF_SAVE_MODIFF (buf) = BUF_MODIFF (buf);
|
|
|
3110 buf->auto_save_modified = BUF_MODIFF (buf);
|
|
|
3111 buf->saved_size = make_int (BUF_SIZE (buf));
|
|
|
3112 #ifdef CLASH_DETECTION
|
|
|
3113 if (NILP (handler))
|
|
|
3114 {
|
|
|
3115 if (!NILP (buf->file_truename))
|
|
|
3116 unlock_file (buf->file_truename);
|
|
|
3117 unlock_file (filename);
|
|
|
3118 }
|
|
|
3119 #endif /* CLASH_DETECTION */
|
|
|
3120 if (not_regular)
|
|
|
3121 RETURN_UNGCPRO (Fsignal (Qfile_error,
|
|
771
|
3122 list2 (build_msg_string ("not a regular file"),
|
|
428
|
3123 filename)));
|
|
|
3124
|
|
|
3125 /* If visiting nonexistent file, return nil. */
|
|
|
3126 if (buf->modtime == -1)
|
|
|
3127 report_file_error ("Opening input file",
|
|
563
|
3128 filename);
|
|
428
|
3129 }
|
|
|
3130
|
|
|
3131 /* Decode file format */
|
|
|
3132 if (inserted > 0)
|
|
|
3133 {
|
|
|
3134 Lisp_Object insval = call3 (Qformat_decode,
|
|
|
3135 Qnil, make_int (inserted), visit);
|
|
|
3136 CHECK_INT (insval);
|
|
|
3137 inserted = XINT (insval);
|
|
|
3138 }
|
|
|
3139
|
|
|
3140 if (inserted > 0)
|
|
|
3141 {
|
|
|
3142 Lisp_Object p;
|
|
|
3143 struct gcpro ngcpro1;
|
|
|
3144
|
|
|
3145 NGCPRO1 (p);
|
|
|
3146 EXTERNAL_LIST_LOOP (p, Vafter_insert_file_functions)
|
|
|
3147 {
|
|
|
3148 Lisp_Object insval =
|
|
|
3149 call1 (XCAR (p), make_int (inserted));
|
|
|
3150 if (!NILP (insval))
|
|
|
3151 {
|
|
|
3152 CHECK_NATNUM (insval);
|
|
|
3153 inserted = XINT (insval);
|
|
|
3154 }
|
|
|
3155 QUIT;
|
|
|
3156 }
|
|
|
3157 NUNGCPRO;
|
|
|
3158 }
|
|
|
3159
|
|
|
3160 UNGCPRO;
|
|
|
3161
|
|
|
3162 if (!NILP (val))
|
|
|
3163 return (val);
|
|
|
3164 else
|
|
|
3165 return (list2 (filename, make_int (inserted)));
|
|
|
3166 }
|
|
|
3167
|
|
|
3168
|
|
|
3169 static int a_write (Lisp_Object outstream, Lisp_Object instream, int pos,
|
|
|
3170 Lisp_Object *annot);
|
|
|
3171 static Lisp_Object build_annotations (Lisp_Object start, Lisp_Object end);
|
|
|
3172
|
|
|
3173 /* If build_annotations switched buffers, switch back to BUF.
|
|
|
3174 Kill the temporary buffer that was selected in the meantime. */
|
|
|
3175
|
|
|
3176 static Lisp_Object
|
|
|
3177 build_annotations_unwind (Lisp_Object buf)
|
|
|
3178 {
|
|
|
3179 Lisp_Object tembuf;
|
|
|
3180
|
|
|
3181 if (XBUFFER (buf) == current_buffer)
|
|
|
3182 return Qnil;
|
|
|
3183 tembuf = Fcurrent_buffer ();
|
|
|
3184 Fset_buffer (buf);
|
|
|
3185 Fkill_buffer (tembuf);
|
|
|
3186 return Qnil;
|
|
|
3187 }
|
|
|
3188
|
|
|
3189 DEFUN ("write-region-internal", Fwrite_region_internal, 3, 7,
|
|
|
3190 "r\nFWrite region to file: ", /*
|
|
|
3191 Write current region into specified file; no coding-system frobbing.
|
|
|
3192 This function is identical to `write-region' except for the handling
|
|
|
3193 of the CODESYS argument under XEmacs/Mule. (When Mule support is not
|
|
|
3194 present, both functions are identical and ignore the CODESYS argument.)
|
|
|
3195 If support for Mule exists in this Emacs, the file is encoded according
|
|
|
3196 to the value of CODESYS. If this is nil, no code conversion occurs.
|
|
764
|
3197
|
|
|
3198 As a special kludge to support auto-saving, when START is nil START and
|
|
|
3199 END are set to the beginning and end, respectively, of the buffer,
|
|
|
3200 regardless of any restrictions. Don't use this feature. It is documented
|
|
|
3201 here because write-region handler writers need to be aware of it.
|
|
428
|
3202 */
|
|
|
3203 (start, end, filename, append, visit, lockname, codesys))
|
|
|
3204 {
|
|
442
|
3205 /* This function can call lisp. GC checked 2000-07-28 ben */
|
|
428
|
3206 int desc;
|
|
|
3207 int failure;
|
|
|
3208 int save_errno = 0;
|
|
|
3209 struct stat st;
|
|
442
|
3210 Lisp_Object fn = Qnil;
|
|
428
|
3211 int speccount = specpdl_depth ();
|
|
|
3212 int visiting_other = STRINGP (visit);
|
|
|
3213 int visiting = (EQ (visit, Qt) || visiting_other);
|
|
|
3214 int quietly = (!visiting && !NILP (visit));
|
|
|
3215 Lisp_Object visit_file = Qnil;
|
|
|
3216 Lisp_Object annotations = Qnil;
|
|
|
3217 struct buffer *given_buffer;
|
|
665
|
3218 Charbpos start1, end1;
|
|
442
|
3219 struct gcpro gcpro1, gcpro2, gcpro3, gcpro4, gcpro5;
|
|
|
3220 struct gcpro ngcpro1, ngcpro2;
|
|
793
|
3221 Lisp_Object curbuf = wrap_buffer (current_buffer);
|
|
|
3222
|
|
442
|
3223
|
|
|
3224 /* start, end, visit, and append are never modified in this fun
|
|
|
3225 so we don't protect them. */
|
|
|
3226 GCPRO5 (visit_file, filename, codesys, lockname, annotations);
|
|
|
3227 NGCPRO2 (curbuf, fn);
|
|
|
3228
|
|
|
3229 /* [[ dmoore - if Fexpand_file_name or handlers kill the buffer,
|
|
428
|
3230 we should signal an error rather than blissfully continuing
|
|
|
3231 along. ARGH, this function is going to lose lose lose. We need
|
|
|
3232 to protect the current_buffer from being destroyed, but the
|
|
442
|
3233 multiple return points make this a pain in the butt. ]] we do
|
|
|
3234 protect curbuf now. --ben */
|
|
428
|
3235
|
|
771
|
3236 codesys = get_coding_system_for_text_file (codesys, 0);
|
|
428
|
3237
|
|
|
3238 if (current_buffer->base_buffer && ! NILP (visit))
|
|
442
|
3239 invalid_operation ("Cannot do file visiting in an indirect buffer",
|
|
|
3240 curbuf);
|
|
428
|
3241
|
|
|
3242 if (!NILP (start) && !STRINGP (start))
|
|
|
3243 get_buffer_range_char (current_buffer, start, end, &start1, &end1, 0);
|
|
|
3244
|
|
|
3245 {
|
|
|
3246 Lisp_Object handler;
|
|
|
3247
|
|
|
3248 if (visiting_other)
|
|
|
3249 visit_file = Fexpand_file_name (visit, Qnil);
|
|
|
3250 else
|
|
|
3251 visit_file = filename;
|
|
|
3252 filename = Fexpand_file_name (filename, Qnil);
|
|
|
3253
|
|
|
3254 if (NILP (lockname))
|
|
|
3255 lockname = visit_file;
|
|
|
3256
|
|
442
|
3257 /* We used to UNGCPRO here. BAD! visit_file is used below after
|
|
|
3258 more Lisp calling. */
|
|
428
|
3259 /* If the file name has special constructs in it,
|
|
|
3260 call the corresponding file handler. */
|
|
|
3261 handler = Ffind_file_name_handler (filename, Qwrite_region);
|
|
|
3262 /* If FILENAME has no handler, see if VISIT has one. */
|
|
|
3263 if (NILP (handler) && STRINGP (visit))
|
|
|
3264 handler = Ffind_file_name_handler (visit, Qwrite_region);
|
|
|
3265
|
|
|
3266 if (!NILP (handler))
|
|
|
3267 {
|
|
|
3268 Lisp_Object val = call8 (handler, Qwrite_region, start, end,
|
|
|
3269 filename, append, visit, lockname, codesys);
|
|
|
3270 if (visiting)
|
|
|
3271 {
|
|
|
3272 BUF_SAVE_MODIFF (current_buffer) = BUF_MODIFF (current_buffer);
|
|
|
3273 current_buffer->saved_size = make_int (BUF_SIZE (current_buffer));
|
|
|
3274 current_buffer->filename = visit_file;
|
|
|
3275 MARK_MODELINE_CHANGED;
|
|
|
3276 }
|
|
442
|
3277 NUNGCPRO;
|
|
|
3278 UNGCPRO;
|
|
428
|
3279 return val;
|
|
|
3280 }
|
|
|
3281 }
|
|
|
3282
|
|
|
3283 #ifdef CLASH_DETECTION
|
|
|
3284 if (!auto_saving)
|
|
442
|
3285 lock_file (lockname);
|
|
428
|
3286 #endif /* CLASH_DETECTION */
|
|
|
3287
|
|
|
3288 /* Special kludge to simplify auto-saving. */
|
|
|
3289 if (NILP (start))
|
|
|
3290 {
|
|
|
3291 start1 = BUF_BEG (current_buffer);
|
|
|
3292 end1 = BUF_Z (current_buffer);
|
|
|
3293 }
|
|
|
3294
|
|
|
3295 record_unwind_protect (build_annotations_unwind, Fcurrent_buffer ());
|
|
|
3296
|
|
|
3297 given_buffer = current_buffer;
|
|
|
3298 annotations = build_annotations (start, end);
|
|
|
3299 if (current_buffer != given_buffer)
|
|
|
3300 {
|
|
|
3301 start1 = BUF_BEGV (current_buffer);
|
|
|
3302 end1 = BUF_ZV (current_buffer);
|
|
|
3303 }
|
|
|
3304
|
|
|
3305 fn = filename;
|
|
|
3306 desc = -1;
|
|
|
3307 if (!NILP (append))
|
|
|
3308 {
|
|
771
|
3309 desc = qxe_open (XSTRING_DATA (fn), O_WRONLY | OPEN_BINARY, 0);
|
|
428
|
3310 }
|
|
|
3311 if (desc < 0)
|
|
|
3312 {
|
|
771
|
3313 desc = qxe_open (XSTRING_DATA (fn),
|
|
|
3314 O_WRONLY | O_TRUNC | O_CREAT | OPEN_BINARY,
|
|
|
3315 auto_saving ? auto_save_mode_bits : CREAT_MODE);
|
|
428
|
3316 }
|
|
|
3317
|
|
|
3318 if (desc < 0)
|
|
|
3319 {
|
|
|
3320 #ifdef CLASH_DETECTION
|
|
|
3321 save_errno = errno;
|
|
|
3322 if (!auto_saving) unlock_file (lockname);
|
|
|
3323 errno = save_errno;
|
|
|
3324 #endif /* CLASH_DETECTION */
|
|
563
|
3325 report_file_error ("Opening output file", filename);
|
|
428
|
3326 }
|
|
|
3327
|
|
|
3328 {
|
|
|
3329 Lisp_Object desc_locative = Fcons (make_int (desc), Qnil);
|
|
|
3330 Lisp_Object instream = Qnil, outstream = Qnil;
|
|
442
|
3331 struct gcpro nngcpro1, nngcpro2;
|
|
|
3332 NNGCPRO2 (instream, outstream);
|
|
428
|
3333
|
|
|
3334 record_unwind_protect (close_file_unwind, desc_locative);
|
|
|
3335
|
|
|
3336 if (!NILP (append))
|
|
|
3337 {
|
|
|
3338 if (lseek (desc, 0, 2) < 0)
|
|
|
3339 {
|
|
|
3340 #ifdef CLASH_DETECTION
|
|
|
3341 if (!auto_saving) unlock_file (lockname);
|
|
|
3342 #endif /* CLASH_DETECTION */
|
|
|
3343 report_file_error ("Lseek error",
|
|
563
|
3344 filename);
|
|
428
|
3345 }
|
|
|
3346 }
|
|
|
3347
|
|
|
3348 failure = 0;
|
|
|
3349
|
|
|
3350 /* Note: I tried increasing the buffering size, along with
|
|
|
3351 various other tricks, but nothing seemed to make much of
|
|
|
3352 a difference in the time it took to save a large file.
|
|
|
3353 (Actually that's not true. With a local disk, changing
|
|
|
3354 the buffer size doesn't seem to make much difference.
|
|
|
3355 With an NFS-mounted disk, it could make a lot of difference
|
|
|
3356 because you're affecting the number of network requests
|
|
|
3357 that need to be made, and there could be a large latency
|
|
|
3358 for each request. So I've increased the buffer size
|
|
|
3359 to 64K.) */
|
|
|
3360 outstream = make_filedesc_output_stream (desc, 0, -1, 0);
|
|
|
3361 Lstream_set_buffering (XLSTREAM (outstream),
|
|
|
3362 LSTREAM_BLOCKN_BUFFERED, 65536);
|
|
|
3363 outstream =
|
|
800
|
3364 make_coding_output_stream (XLSTREAM (outstream), codesys,
|
|
|
3365 CODING_ENCODE, 0);
|
|
428
|
3366 Lstream_set_buffering (XLSTREAM (outstream),
|
|
|
3367 LSTREAM_BLOCKN_BUFFERED, 65536);
|
|
|
3368 if (STRINGP (start))
|
|
|
3369 {
|
|
|
3370 instream = make_lisp_string_input_stream (start, 0, -1);
|
|
|
3371 start1 = 0;
|
|
|
3372 }
|
|
|
3373 else
|
|
|
3374 instream = make_lisp_buffer_input_stream (current_buffer, start1, end1,
|
|
|
3375 LSTR_SELECTIVE |
|
|
|
3376 LSTR_IGNORE_ACCESSIBLE);
|
|
|
3377 failure = (0 > (a_write (outstream, instream, start1,
|
|
|
3378 &annotations)));
|
|
|
3379 save_errno = errno;
|
|
|
3380 /* Note that this doesn't close the desc since we created the
|
|
|
3381 stream without the LSTR_CLOSING flag, but it does
|
|
|
3382 flush out any buffered data. */
|
|
|
3383 if (Lstream_close (XLSTREAM (outstream)) < 0)
|
|
|
3384 {
|
|
|
3385 failure = 1;
|
|
|
3386 save_errno = errno;
|
|
|
3387 }
|
|
|
3388 Lstream_close (XLSTREAM (instream));
|
|
|
3389
|
|
|
3390 #ifdef HAVE_FSYNC
|
|
|
3391 /* Note fsync appears to change the modtime on BSD4.2 (both vax and sun).
|
|
|
3392 Disk full in NFS may be reported here. */
|
|
|
3393 /* mib says that closing the file will try to write as fast as NFS can do
|
|
|
3394 it, and that means the fsync here is not crucial for autosave files. */
|
|
|
3395 if (!auto_saving && fsync (desc) < 0
|
|
|
3396 /* If fsync fails with EINTR, don't treat that as serious. */
|
|
|
3397 && errno != EINTR)
|
|
|
3398 {
|
|
|
3399 failure = 1;
|
|
|
3400 save_errno = errno;
|
|
|
3401 }
|
|
|
3402 #endif /* HAVE_FSYNC */
|
|
|
3403
|
|
440
|
3404 /* Spurious "file has changed on disk" warnings used to be seen on
|
|
|
3405 systems where close() can change the modtime. This is known to
|
|
|
3406 happen on various NFS file systems, on Windows, and on Linux.
|
|
|
3407 Rather than handling this on a per-system basis, we
|
|
771
|
3408 unconditionally do the qxe_stat() after the retry_close(). */
|
|
428
|
3409
|
|
|
3410 /* NFS can report a write failure now. */
|
|
771
|
3411 if (retry_close (desc) < 0)
|
|
428
|
3412 {
|
|
|
3413 failure = 1;
|
|
|
3414 save_errno = errno;
|
|
|
3415 }
|
|
|
3416
|
|
|
3417 /* Discard the close unwind-protect. Execute the one for
|
|
|
3418 build_annotations (switches back to the original current buffer
|
|
|
3419 as necessary). */
|
|
|
3420 XCAR (desc_locative) = Qnil;
|
|
771
|
3421 unbind_to (speccount);
|
|
442
|
3422
|
|
|
3423 NNUNGCPRO;
|
|
428
|
3424 }
|
|
|
3425
|
|
771
|
3426 qxe_stat (XSTRING_DATA (fn), &st);
|
|
428
|
3427
|
|
|
3428 #ifdef CLASH_DETECTION
|
|
|
3429 if (!auto_saving)
|
|
|
3430 unlock_file (lockname);
|
|
|
3431 #endif /* CLASH_DETECTION */
|
|
|
3432
|
|
|
3433 /* Do this before reporting IO error
|
|
|
3434 to avoid a "file has changed on disk" warning on
|
|
|
3435 next attempt to save. */
|
|
|
3436 if (visiting)
|
|
|
3437 current_buffer->modtime = st.st_mtime;
|
|
|
3438
|
|
|
3439 if (failure)
|
|
442
|
3440 {
|
|
|
3441 errno = save_errno;
|
|
563
|
3442 report_file_error ("Writing file", fn);
|
|
442
|
3443 }
|
|
428
|
3444
|
|
|
3445 if (visiting)
|
|
|
3446 {
|
|
|
3447 BUF_SAVE_MODIFF (current_buffer) = BUF_MODIFF (current_buffer);
|
|
|
3448 current_buffer->saved_size = make_int (BUF_SIZE (current_buffer));
|
|
|
3449 current_buffer->filename = visit_file;
|
|
|
3450 MARK_MODELINE_CHANGED;
|
|
|
3451 }
|
|
|
3452 else if (quietly)
|
|
|
3453 {
|
|
442
|
3454 NUNGCPRO;
|
|
|
3455 UNGCPRO;
|
|
428
|
3456 return Qnil;
|
|
|
3457 }
|
|
|
3458
|
|
|
3459 if (!auto_saving)
|
|
|
3460 {
|
|
|
3461 if (visiting_other)
|
|
|
3462 message ("Wrote %s", XSTRING_DATA (visit_file));
|
|
|
3463 else
|
|
|
3464 {
|
|
446
|
3465 Lisp_Object fsp = Qnil;
|
|
442
|
3466 struct gcpro nngcpro1;
|
|
|
3467
|
|
|
3468 NNGCPRO1 (fsp);
|
|
428
|
3469 fsp = Ffile_symlink_p (fn);
|
|
|
3470 if (NILP (fsp))
|
|
|
3471 message ("Wrote %s", XSTRING_DATA (fn));
|
|
|
3472 else
|
|
|
3473 message ("Wrote %s (symlink to %s)",
|
|
|
3474 XSTRING_DATA (fn), XSTRING_DATA (fsp));
|
|
442
|
3475 NNUNGCPRO;
|
|
428
|
3476 }
|
|
|
3477 }
|
|
442
|
3478 NUNGCPRO;
|
|
|
3479 UNGCPRO;
|
|
428
|
3480 return Qnil;
|
|
|
3481 }
|
|
|
3482
|
|
|
3483 /* #### This is such a load of shit!!!! There is no way we should define
|
|
|
3484 something so stupid as a subr, just sort the fucking list more
|
|
|
3485 intelligently. */
|
|
|
3486 DEFUN ("car-less-than-car", Fcar_less_than_car, 2, 2, 0, /*
|
|
|
3487 Return t if (car A) is numerically less than (car B).
|
|
|
3488 */
|
|
|
3489 (a, b))
|
|
|
3490 {
|
|
|
3491 Lisp_Object objs[2];
|
|
|
3492 objs[0] = Fcar (a);
|
|
|
3493 objs[1] = Fcar (b);
|
|
|
3494 return Flss (2, objs);
|
|
|
3495 }
|
|
|
3496
|
|
|
3497 /* Heh heh heh, let's define this too, just to aggravate the person who
|
|
|
3498 wrote the above comment. */
|
|
|
3499 DEFUN ("cdr-less-than-cdr", Fcdr_less_than_cdr, 2, 2, 0, /*
|
|
|
3500 Return t if (cdr A) is numerically less than (cdr B).
|
|
|
3501 */
|
|
|
3502 (a, b))
|
|
|
3503 {
|
|
|
3504 Lisp_Object objs[2];
|
|
|
3505 objs[0] = Fcdr (a);
|
|
|
3506 objs[1] = Fcdr (b);
|
|
|
3507 return Flss (2, objs);
|
|
|
3508 }
|
|
|
3509
|
|
|
3510 /* Build the complete list of annotations appropriate for writing out
|
|
|
3511 the text between START and END, by calling all the functions in
|
|
|
3512 write-region-annotate-functions and merging the lists they return.
|
|
|
3513 If one of these functions switches to a different buffer, we assume
|
|
|
3514 that buffer contains altered text. Therefore, the caller must
|
|
|
3515 make sure to restore the current buffer in all cases,
|
|
|
3516 as save-excursion would do. */
|
|
|
3517
|
|
|
3518 static Lisp_Object
|
|
|
3519 build_annotations (Lisp_Object start, Lisp_Object end)
|
|
|
3520 {
|
|
|
3521 /* This function can GC */
|
|
|
3522 Lisp_Object annotations;
|
|
|
3523 Lisp_Object p, res;
|
|
|
3524 struct gcpro gcpro1, gcpro2;
|
|
793
|
3525 Lisp_Object original_buffer = wrap_buffer (current_buffer);
|
|
|
3526
|
|
428
|
3527
|
|
|
3528 annotations = Qnil;
|
|
|
3529 p = Vwrite_region_annotate_functions;
|
|
|
3530 GCPRO2 (annotations, p);
|
|
|
3531 while (!NILP (p))
|
|
|
3532 {
|
|
|
3533 struct buffer *given_buffer = current_buffer;
|
|
|
3534 Vwrite_region_annotations_so_far = annotations;
|
|
|
3535 res = call2 (Fcar (p), start, end);
|
|
|
3536 /* If the function makes a different buffer current,
|
|
|
3537 assume that means this buffer contains altered text to be output.
|
|
|
3538 Reset START and END from the buffer bounds
|
|
|
3539 and discard all previous annotations because they should have
|
|
|
3540 been dealt with by this function. */
|
|
|
3541 if (current_buffer != given_buffer)
|
|
|
3542 {
|
|
|
3543 start = make_int (BUF_BEGV (current_buffer));
|
|
|
3544 end = make_int (BUF_ZV (current_buffer));
|
|
|
3545 annotations = Qnil;
|
|
|
3546 }
|
|
|
3547 Flength (res); /* Check basic validity of return value */
|
|
|
3548 annotations = merge (annotations, res, Qcar_less_than_car);
|
|
|
3549 p = Fcdr (p);
|
|
|
3550 }
|
|
|
3551
|
|
|
3552 /* Now do the same for annotation functions implied by the file-format */
|
|
|
3553 if (auto_saving && (!EQ (Vauto_save_file_format, Qt)))
|
|
|
3554 p = Vauto_save_file_format;
|
|
|
3555 else
|
|
|
3556 p = current_buffer->file_format;
|
|
|
3557 while (!NILP (p))
|
|
|
3558 {
|
|
|
3559 struct buffer *given_buffer = current_buffer;
|
|
|
3560 Vwrite_region_annotations_so_far = annotations;
|
|
|
3561 res = call4 (Qformat_annotate_function, Fcar (p), start, end,
|
|
|
3562 original_buffer);
|
|
|
3563 if (current_buffer != given_buffer)
|
|
|
3564 {
|
|
|
3565 start = make_int (BUF_BEGV (current_buffer));
|
|
|
3566 end = make_int (BUF_ZV (current_buffer));
|
|
|
3567 annotations = Qnil;
|
|
|
3568 }
|
|
|
3569 Flength (res);
|
|
|
3570 annotations = merge (annotations, res, Qcar_less_than_car);
|
|
|
3571 p = Fcdr (p);
|
|
|
3572 }
|
|
|
3573 UNGCPRO;
|
|
|
3574 return annotations;
|
|
|
3575 }
|
|
|
3576
|
|
|
3577 /* Write to stream OUTSTREAM the characters from INSTREAM (it is read until
|
|
|
3578 EOF is encountered), assuming they start at position POS in the buffer
|
|
|
3579 of string that STREAM refers to. Intersperse with them the annotations
|
|
|
3580 from *ANNOT that fall into the range of positions we are reading from,
|
|
|
3581 each at its appropriate position.
|
|
|
3582
|
|
|
3583 Modify *ANNOT by discarding elements as we output them.
|
|
|
3584 The return value is negative in case of system call failure. */
|
|
|
3585
|
|
|
3586 /* 4K should probably be fine. We just need to reduce the number of
|
|
|
3587 function calls to reasonable level. The Lstream stuff itself will
|
|
|
3588 batch to 64K to reduce the number of system calls. */
|
|
|
3589
|
|
|
3590 #define A_WRITE_BATCH_SIZE 4096
|
|
|
3591
|
|
|
3592 static int
|
|
|
3593 a_write (Lisp_Object outstream, Lisp_Object instream, int pos,
|
|
|
3594 Lisp_Object *annot)
|
|
|
3595 {
|
|
|
3596 Lisp_Object tem;
|
|
|
3597 int nextpos;
|
|
|
3598 unsigned char largebuf[A_WRITE_BATCH_SIZE];
|
|
|
3599 Lstream *instr = XLSTREAM (instream);
|
|
|
3600 Lstream *outstr = XLSTREAM (outstream);
|
|
|
3601
|
|
|
3602 while (LISTP (*annot))
|
|
|
3603 {
|
|
|
3604 tem = Fcar_safe (Fcar (*annot));
|
|
|
3605 if (INTP (tem))
|
|
|
3606 nextpos = XINT (tem);
|
|
|
3607 else
|
|
|
3608 nextpos = INT_MAX;
|
|
|
3609 #ifdef MULE
|
|
|
3610 /* If there are annotations left and we have Mule, then we
|
|
867
|
3611 have to do the I/O one ichar at a time so we can
|
|
428
|
3612 determine when to insert the annotation. */
|
|
|
3613 if (!NILP (*annot))
|
|
|
3614 {
|
|
867
|
3615 Ichar ch;
|
|
|
3616 while (pos != nextpos && (ch = Lstream_get_ichar (instr)) != EOF)
|
|
428
|
3617 {
|
|
867
|
3618 if (Lstream_put_ichar (outstr, ch) < 0)
|
|
428
|
3619 return -1;
|
|
|
3620 pos++;
|
|
|
3621 }
|
|
|
3622 }
|
|
|
3623 else
|
|
|
3624 #endif /* MULE */
|
|
|
3625 {
|
|
|
3626 while (pos != nextpos)
|
|
|
3627 {
|
|
|
3628 /* Otherwise there is no point to that. Just go in batches. */
|
|
|
3629 int chunk = min (nextpos - pos, A_WRITE_BATCH_SIZE);
|
|
|
3630
|
|
|
3631 chunk = Lstream_read (instr, largebuf, chunk);
|
|
|
3632 if (chunk < 0)
|
|
|
3633 return -1;
|
|
|
3634 if (chunk == 0) /* EOF */
|
|
|
3635 break;
|
|
771
|
3636 if (Lstream_write (outstr, largebuf, chunk) < 0)
|
|
428
|
3637 return -1;
|
|
|
3638 pos += chunk;
|
|
|
3639 }
|
|
|
3640 }
|
|
|
3641 if (pos == nextpos)
|
|
|
3642 {
|
|
|
3643 tem = Fcdr (Fcar (*annot));
|
|
|
3644 if (STRINGP (tem))
|
|
|
3645 {
|
|
|
3646 if (Lstream_write (outstr, XSTRING_DATA (tem),
|
|
|
3647 XSTRING_LENGTH (tem)) < 0)
|
|
|
3648 return -1;
|
|
|
3649 }
|
|
|
3650 *annot = Fcdr (*annot);
|
|
|
3651 }
|
|
|
3652 else
|
|
|
3653 return 0;
|
|
|
3654 }
|
|
|
3655 return -1;
|
|
|
3656 }
|
|
|
3657
|
|
|
3658
|
|
|
3659
|
|
|
3660 #if 0
|
|
|
3661 #include <des_crypt.h>
|
|
|
3662
|
|
|
3663 #define CRYPT_BLOCK_SIZE 8 /* bytes */
|
|
|
3664 #define CRYPT_KEY_SIZE 8 /* bytes */
|
|
|
3665
|
|
|
3666 DEFUN ("encrypt-string", Fencrypt_string, 2, 2, 0, /*
|
|
|
3667 Encrypt STRING using KEY.
|
|
|
3668 */
|
|
|
3669 (string, key))
|
|
|
3670 {
|
|
1333
|
3671 Extbyte *encrypted_string, *raw_key;
|
|
|
3672 Extbyte *string_ext, *key_ext;
|
|
|
3673 Bytecount string_size_ext, key_size_ext, rounded_size, extra, key_size;
|
|
|
3674
|
|
428
|
3675 CHECK_STRING (string);
|
|
|
3676 CHECK_STRING (key);
|
|
|
3677
|
|
1333
|
3678 LISP_STRING_TO_SIZED_EXTERNAL (string, string_ext, string_size_ext, Qbinary);
|
|
|
3679 LISP_STRING_TO_SIZED_EXTERNAL (key, key_ext, key_size_ext, Qbinary);
|
|
|
3680
|
|
|
3681 extra = string_size_ext % CRYPT_BLOCK_SIZE;
|
|
|
3682 rounded_size = string_size_ext + extra;
|
|
851
|
3683 encrypted_string = ALLOCA (rounded_size + 1);
|
|
1333
|
3684 memcpy (encrypted_string, string_ext, string_size_ext);
|
|
428
|
3685 memset (encrypted_string + rounded_size - extra, 0, extra + 1);
|
|
|
3686
|
|
1333
|
3687 key_size = min (CRYPT_KEY_SIZE, key_size_ext);
|
|
428
|
3688
|
|
851
|
3689 raw_key = ALLOCA (CRYPT_KEY_SIZE + 1);
|
|
1333
|
3690 memcpy (raw_key, key_ext, key_size);
|
|
428
|
3691 memset (raw_key + key_size, 0, (CRYPT_KEY_SIZE + 1) - key_size);
|
|
|
3692
|
|
|
3693 ecb_crypt (raw_key, encrypted_string, rounded_size,
|
|
|
3694 DES_ENCRYPT | DES_SW);
|
|
1333
|
3695 return make_ext_string (encrypted_string, rounded_size, Qbinary);
|
|
428
|
3696 }
|
|
|
3697
|
|
|
3698 DEFUN ("decrypt-string", Fdecrypt_string, 2, 2, 0, /*
|
|
|
3699 Decrypt STRING using KEY.
|
|
|
3700 */
|
|
|
3701 (string, key))
|
|
|
3702 {
|
|
1333
|
3703 Extbyte *decrypted_string, *raw_key;
|
|
|
3704 Extbyte *string_ext, *key_ext;
|
|
|
3705 Bytecount string_size_ext, key_size_ext, string_size, key_size;
|
|
428
|
3706
|
|
|
3707 CHECK_STRING (string);
|
|
|
3708 CHECK_STRING (key);
|
|
|
3709
|
|
1333
|
3710 LISP_STRING_TO_SIZED_EXTERNAL (string, string_ext, string_size_ext, Qbinary);
|
|
|
3711 LISP_STRING_TO_SIZED_EXTERNAL (key, key_ext, key_size_ext, Qbinary);
|
|
|
3712
|
|
|
3713 string_size = string_size_ext + 1;
|
|
851
|
3714 decrypted_string = ALLOCA (string_size);
|
|
1333
|
3715 memcpy (decrypted_string, string_ext, string_size);
|
|
428
|
3716 decrypted_string[string_size - 1] = '\0';
|
|
|
3717
|
|
1333
|
3718 key_size = min (CRYPT_KEY_SIZE, key_size_ext);
|
|
428
|
3719
|
|
851
|
3720 raw_key = ALLOCA (CRYPT_KEY_SIZE + 1);
|
|
1333
|
3721 memcpy (raw_key, key_ext, key_size);
|
|
428
|
3722 memset (raw_key + key_size, 0, (CRYPT_KEY_SIZE + 1) - key_size);
|
|
|
3723
|
|
|
3724
|
|
|
3725 ecb_crypt (raw_key, decrypted_string, string_size, D | DES_SW);
|
|
1333
|
3726 return make_ext_string (decrypted_string, string_size - 1, Qbinary);
|
|
428
|
3727 }
|
|
|
3728 #endif /* 0 */
|
|
|
3729
|
|
|
3730
|
|
|
3731 DEFUN ("verify-visited-file-modtime", Fverify_visited_file_modtime, 1, 1, 0, /*
|
|
444
|
3732 Return t if last mod time of BUFFER's visited file matches what BUFFER records.
|
|
428
|
3733 This means that the file has not been changed since it was visited or saved.
|
|
|
3734 */
|
|
444
|
3735 (buffer))
|
|
428
|
3736 {
|
|
442
|
3737 /* This function can call lisp; GC checked 2000-07-11 ben */
|
|
428
|
3738 struct buffer *b;
|
|
|
3739 struct stat st;
|
|
|
3740 Lisp_Object handler;
|
|
|
3741
|
|
444
|
3742 CHECK_BUFFER (buffer);
|
|
|
3743 b = XBUFFER (buffer);
|
|
428
|
3744
|
|
|
3745 if (!STRINGP (b->filename)) return Qt;
|
|
|
3746 if (b->modtime == 0) return Qt;
|
|
|
3747
|
|
|
3748 /* If the file name has special constructs in it,
|
|
|
3749 call the corresponding file handler. */
|
|
|
3750 handler = Ffind_file_name_handler (b->filename,
|
|
|
3751 Qverify_visited_file_modtime);
|
|
|
3752 if (!NILP (handler))
|
|
444
|
3753 return call2 (handler, Qverify_visited_file_modtime, buffer);
|
|
428
|
3754
|
|
771
|
3755 if (qxe_stat (XSTRING_DATA (b->filename), &st) < 0)
|
|
428
|
3756 {
|
|
|
3757 /* If the file doesn't exist now and didn't exist before,
|
|
|
3758 we say that it isn't modified, provided the error is a tame one. */
|
|
|
3759 if (errno == ENOENT || errno == EACCES || errno == ENOTDIR)
|
|
|
3760 st.st_mtime = -1;
|
|
|
3761 else
|
|
|
3762 st.st_mtime = 0;
|
|
|
3763 }
|
|
|
3764 if (st.st_mtime == b->modtime
|
|
|
3765 /* If both are positive, accept them if they are off by one second. */
|
|
|
3766 || (st.st_mtime > 0 && b->modtime > 0
|
|
|
3767 && (st.st_mtime == b->modtime + 1
|
|
|
3768 || st.st_mtime == b->modtime - 1)))
|
|
|
3769 return Qt;
|
|
|
3770 return Qnil;
|
|
|
3771 }
|
|
|
3772
|
|
|
3773 DEFUN ("clear-visited-file-modtime", Fclear_visited_file_modtime, 0, 0, 0, /*
|
|
|
3774 Clear out records of last mod time of visited file.
|
|
|
3775 Next attempt to save will certainly not complain of a discrepancy.
|
|
|
3776 */
|
|
|
3777 ())
|
|
|
3778 {
|
|
|
3779 current_buffer->modtime = 0;
|
|
|
3780 return Qnil;
|
|
|
3781 }
|
|
|
3782
|
|
|
3783 DEFUN ("visited-file-modtime", Fvisited_file_modtime, 0, 0, 0, /*
|
|
|
3784 Return the current buffer's recorded visited file modification time.
|
|
|
3785 The value is a list of the form (HIGH . LOW), like the time values
|
|
|
3786 that `file-attributes' returns.
|
|
|
3787 */
|
|
|
3788 ())
|
|
|
3789 {
|
|
|
3790 return time_to_lisp ((time_t) current_buffer->modtime);
|
|
|
3791 }
|
|
|
3792
|
|
|
3793 DEFUN ("set-visited-file-modtime", Fset_visited_file_modtime, 0, 1, 0, /*
|
|
|
3794 Update buffer's recorded modification time from the visited file's time.
|
|
|
3795 Useful if the buffer was not read from the file normally
|
|
|
3796 or if the file itself has been changed for some known benign reason.
|
|
|
3797 An argument specifies the modification time value to use
|
|
|
3798 \(instead of that of the visited file), in the form of a list
|
|
|
3799 \(HIGH . LOW) or (HIGH LOW).
|
|
|
3800 */
|
|
|
3801 (time_list))
|
|
|
3802 {
|
|
|
3803 /* This function can call lisp */
|
|
|
3804 if (!NILP (time_list))
|
|
|
3805 {
|
|
|
3806 time_t the_time;
|
|
|
3807 lisp_to_time (time_list, &the_time);
|
|
|
3808 current_buffer->modtime = (int) the_time;
|
|
|
3809 }
|
|
|
3810 else
|
|
|
3811 {
|
|
446
|
3812 Lisp_Object filename = Qnil;
|
|
428
|
3813 struct stat st;
|
|
|
3814 Lisp_Object handler;
|
|
|
3815 struct gcpro gcpro1, gcpro2, gcpro3;
|
|
|
3816
|
|
|
3817 GCPRO3 (filename, time_list, current_buffer->filename);
|
|
|
3818 filename = Fexpand_file_name (current_buffer->filename, Qnil);
|
|
|
3819
|
|
|
3820 /* If the file name has special constructs in it,
|
|
|
3821 call the corresponding file handler. */
|
|
|
3822 handler = Ffind_file_name_handler (filename, Qset_visited_file_modtime);
|
|
|
3823 UNGCPRO;
|
|
|
3824 if (!NILP (handler))
|
|
|
3825 /* The handler can find the file name the same way we did. */
|
|
|
3826 return call2 (handler, Qset_visited_file_modtime, Qnil);
|
|
771
|
3827 else if (qxe_stat (XSTRING_DATA (filename), &st) >= 0)
|
|
428
|
3828 current_buffer->modtime = st.st_mtime;
|
|
|
3829 }
|
|
|
3830
|
|
|
3831 return Qnil;
|
|
|
3832 }
|
|
|
3833
|
|
|
3834 static Lisp_Object
|
|
|
3835 auto_save_error (Lisp_Object condition_object, Lisp_Object ignored)
|
|
|
3836 {
|
|
|
3837 /* This function can call lisp */
|
|
|
3838 if (gc_in_progress)
|
|
|
3839 return Qnil;
|
|
|
3840 /* Don't try printing an error message after everything is gone! */
|
|
|
3841 if (preparing_for_armageddon)
|
|
|
3842 return Qnil;
|
|
|
3843 clear_echo_area (selected_frame (), Qauto_saving, 1);
|
|
|
3844 Fding (Qt, Qauto_save_error, Qnil);
|
|
|
3845 message ("Auto-saving...error for %s", XSTRING_DATA (current_buffer->name));
|
|
|
3846 Fsleep_for (make_int (1));
|
|
|
3847 message ("Auto-saving...error!for %s", XSTRING_DATA (current_buffer->name));
|
|
|
3848 Fsleep_for (make_int (1));
|
|
|
3849 message ("Auto-saving...error for %s", XSTRING_DATA (current_buffer->name));
|
|
|
3850 Fsleep_for (make_int (1));
|
|
|
3851 return Qnil;
|
|
|
3852 }
|
|
|
3853
|
|
|
3854 static Lisp_Object
|
|
|
3855 auto_save_1 (Lisp_Object ignored)
|
|
|
3856 {
|
|
|
3857 /* This function can call lisp */
|
|
|
3858 /* #### I think caller is protecting current_buffer? */
|
|
|
3859 struct stat st;
|
|
|
3860 Lisp_Object fn = current_buffer->filename;
|
|
|
3861 Lisp_Object a = current_buffer->auto_save_file_name;
|
|
|
3862
|
|
|
3863 if (!STRINGP (a))
|
|
|
3864 return (Qnil);
|
|
|
3865
|
|
|
3866 /* Get visited file's mode to become the auto save file's mode. */
|
|
|
3867 if (STRINGP (fn) &&
|
|
771
|
3868 qxe_stat (XSTRING_DATA (fn), &st) >= 0)
|
|
428
|
3869 /* But make sure we can overwrite it later! */
|
|
|
3870 auto_save_mode_bits = st.st_mode | 0600;
|
|
|
3871 else
|
|
|
3872 /* default mode for auto-save files of buffers with no file is
|
|
|
3873 readable by owner only. This may annoy some small number of
|
|
|
3874 people, but the alternative removes all privacy from email. */
|
|
|
3875 auto_save_mode_bits = 0600;
|
|
|
3876
|
|
|
3877 return
|
|
|
3878 Fwrite_region_internal (Qnil, Qnil, a, Qnil, Qlambda, Qnil,
|
|
771
|
3879 #if 1 /* #### Kyle wants it changed to not use escape-quoted. Think
|
|
|
3880 carefully about how this works. */
|
|
|
3881 Qescape_quoted
|
|
|
3882 #else
|
|
707
|
3883 current_buffer->buffer_file_coding_system
|
|
428
|
3884 #endif
|
|
|
3885 );
|
|
|
3886 }
|
|
|
3887
|
|
|
3888 static Lisp_Object
|
|
|
3889 auto_save_expand_name_error (Lisp_Object condition_object, Lisp_Object ignored)
|
|
|
3890 {
|
|
771
|
3891 warn_when_safe_lispobj
|
|
793
|
3892 (Qfile, Qerror,
|
|
771
|
3893 Fcons (build_msg_string ("Invalid auto-save list-file"),
|
|
|
3894 Fcons (Vauto_save_list_file_name,
|
|
|
3895 condition_object)));
|
|
428
|
3896 return Qnil;
|
|
|
3897 }
|
|
|
3898
|
|
|
3899 static Lisp_Object
|
|
|
3900 auto_save_expand_name (Lisp_Object name)
|
|
|
3901 {
|
|
|
3902 struct gcpro gcpro1;
|
|
|
3903
|
|
|
3904 /* note that caller did NOT gc protect name, so we do it. */
|
|
771
|
3905 /* [[dmoore - this might not be necessary, if condition_case_1
|
|
|
3906 protects it. but I don't think it does.]] indeed it doesn't. --ben */
|
|
428
|
3907 GCPRO1 (name);
|
|
|
3908 RETURN_UNGCPRO (Fexpand_file_name (name, Qnil));
|
|
|
3909 }
|
|
|
3910
|
|
|
3911
|
|
|
3912 static Lisp_Object
|
|
|
3913 do_auto_save_unwind (Lisp_Object fd)
|
|
|
3914 {
|
|
771
|
3915 retry_close (XINT (fd));
|
|
428
|
3916 return (fd);
|
|
|
3917 }
|
|
|
3918
|
|
|
3919 /* Fdo_auto_save() checks whether a GC is in progress when it is called,
|
|
|
3920 and if so, tries to avoid touching lisp objects.
|
|
|
3921
|
|
|
3922 The only time that Fdo_auto_save() is called while GC is in progress
|
|
|
3923 is if we're going down, as a result of an abort() or a kill signal.
|
|
|
3924 It's fairly important that we generate autosave files in that case!
|
|
|
3925 */
|
|
|
3926
|
|
|
3927 DEFUN ("do-auto-save", Fdo_auto_save, 0, 2, "", /*
|
|
|
3928 Auto-save all buffers that need it.
|
|
|
3929 This is all buffers that have auto-saving enabled
|
|
|
3930 and are changed since last auto-saved.
|
|
|
3931 Auto-saving writes the buffer into a file
|
|
|
3932 so that your editing is not lost if the system crashes.
|
|
|
3933 This file is not the file you visited; that changes only when you save.
|
|
|
3934 Normally we run the normal hook `auto-save-hook' before saving.
|
|
|
3935
|
|
|
3936 Non-nil first argument means do not print any message if successful.
|
|
|
3937 Non-nil second argument means save only current buffer.
|
|
|
3938 */
|
|
|
3939 (no_message, current_only))
|
|
|
3940 {
|
|
|
3941 /* This function can call lisp */
|
|
|
3942 struct buffer *b;
|
|
|
3943 Lisp_Object tail, buf;
|
|
|
3944 int auto_saved = 0;
|
|
|
3945 int do_handled_files;
|
|
|
3946 Lisp_Object oquit = Qnil;
|
|
|
3947 Lisp_Object listfile = Qnil;
|
|
|
3948 Lisp_Object old;
|
|
|
3949 int listdesc = -1;
|
|
|
3950 int speccount = specpdl_depth ();
|
|
|
3951 struct gcpro gcpro1, gcpro2, gcpro3;
|
|
|
3952
|
|
793
|
3953 old = wrap_buffer (current_buffer);
|
|
428
|
3954 GCPRO3 (oquit, listfile, old);
|
|
|
3955 check_quit (); /* make Vquit_flag accurate */
|
|
|
3956 /* Ordinarily don't quit within this function,
|
|
|
3957 but don't make it impossible to quit (in case we get hung in I/O). */
|
|
|
3958 oquit = Vquit_flag;
|
|
|
3959 Vquit_flag = Qnil;
|
|
|
3960
|
|
|
3961 /* No further GCPRO needed, because (when it matters) all Lisp_Object
|
|
|
3962 variables point to non-strings reached from Vbuffer_alist. */
|
|
|
3963
|
|
|
3964 if (minibuf_level != 0 || preparing_for_armageddon)
|
|
|
3965 no_message = Qt;
|
|
|
3966
|
|
|
3967 run_hook (Qauto_save_hook);
|
|
|
3968
|
|
|
3969 if (STRINGP (Vauto_save_list_file_name))
|
|
|
3970 listfile = condition_case_1 (Qt,
|
|
|
3971 auto_save_expand_name,
|
|
|
3972 Vauto_save_list_file_name,
|
|
|
3973 auto_save_expand_name_error, Qnil);
|
|
|
3974
|
|
853
|
3975 internal_bind_int (&auto_saving, 1);
|
|
428
|
3976
|
|
|
3977 /* First, save all files which don't have handlers. If Emacs is
|
|
|
3978 crashing, the handlers may tweak what is causing Emacs to crash
|
|
|
3979 in the first place, and it would be a shame if Emacs failed to
|
|
|
3980 autosave perfectly ordinary files because it couldn't handle some
|
|
|
3981 ange-ftp'd file. */
|
|
|
3982 for (do_handled_files = 0; do_handled_files < 2; do_handled_files++)
|
|
|
3983 {
|
|
|
3984 for (tail = Vbuffer_alist;
|
|
|
3985 CONSP (tail);
|
|
|
3986 tail = XCDR (tail))
|
|
|
3987 {
|
|
|
3988 buf = XCDR (XCAR (tail));
|
|
|
3989 b = XBUFFER (buf);
|
|
|
3990
|
|
|
3991 if (!NILP (current_only)
|
|
|
3992 && b != current_buffer)
|
|
|
3993 continue;
|
|
|
3994
|
|
|
3995 /* Don't auto-save indirect buffers.
|
|
|
3996 The base buffer takes care of it. */
|
|
|
3997 if (b->base_buffer)
|
|
|
3998 continue;
|
|
|
3999
|
|
|
4000 /* Check for auto save enabled
|
|
|
4001 and file changed since last auto save
|
|
|
4002 and file changed since last real save. */
|
|
|
4003 if (STRINGP (b->auto_save_file_name)
|
|
|
4004 && BUF_SAVE_MODIFF (b) < BUF_MODIFF (b)
|
|
|
4005 && b->auto_save_modified < BUF_MODIFF (b)
|
|
|
4006 /* -1 means we've turned off autosaving for a while--see below. */
|
|
|
4007 && XINT (b->saved_size) >= 0
|
|
|
4008 && (do_handled_files
|
|
|
4009 || NILP (Ffind_file_name_handler (b->auto_save_file_name,
|
|
|
4010 Qwrite_region))))
|
|
|
4011 {
|
|
|
4012 EMACS_TIME before_time, after_time;
|
|
|
4013
|
|
|
4014 EMACS_GET_TIME (before_time);
|
|
|
4015 /* If we had a failure, don't try again for 20 minutes. */
|
|
|
4016 if (!preparing_for_armageddon
|
|
|
4017 && b->auto_save_failure_time >= 0
|
|
|
4018 && (EMACS_SECS (before_time) - b->auto_save_failure_time <
|
|
|
4019 1200))
|
|
|
4020 continue;
|
|
|
4021
|
|
|
4022 if (!preparing_for_armageddon &&
|
|
|
4023 (XINT (b->saved_size) * 10
|
|
|
4024 > (BUF_Z (b) - BUF_BEG (b)) * 13)
|
|
|
4025 /* A short file is likely to change a large fraction;
|
|
|
4026 spare the user annoying messages. */
|
|
|
4027 && XINT (b->saved_size) > 5000
|
|
|
4028 /* These messages are frequent and annoying for `*mail*'. */
|
|
|
4029 && !NILP (b->filename)
|
|
|
4030 && NILP (no_message)
|
|
|
4031 && disable_auto_save_when_buffer_shrinks)
|
|
|
4032 {
|
|
|
4033 /* It has shrunk too much; turn off auto-saving here.
|
|
|
4034 Unless we're about to crash, in which case auto-save it
|
|
|
4035 anyway.
|
|
|
4036 */
|
|
|
4037 message
|
|
|
4038 ("Buffer %s has shrunk a lot; auto save turned off there",
|
|
|
4039 XSTRING_DATA (b->name));
|
|
|
4040 /* Turn off auto-saving until there's a real save,
|
|
|
4041 and prevent any more warnings. */
|
|
|
4042 b->saved_size = make_int (-1);
|
|
|
4043 if (!gc_in_progress)
|
|
|
4044 Fsleep_for (make_int (1));
|
|
|
4045 continue;
|
|
|
4046 }
|
|
|
4047 set_buffer_internal (b);
|
|
|
4048 if (!auto_saved && NILP (no_message))
|
|
|
4049 {
|
|
1333
|
4050 static const Ibyte *msg = (const Ibyte *) "Auto-saving...";
|
|
428
|
4051 echo_area_message (selected_frame (), msg, Qnil,
|
|
1333
|
4052 0, qxestrlen (msg),
|
|
428
|
4053 Qauto_saving);
|
|
|
4054 }
|
|
|
4055
|
|
|
4056 /* Open the auto-save list file, if necessary.
|
|
|
4057 We only do this now so that the file only exists
|
|
|
4058 if we actually auto-saved any files. */
|
|
444
|
4059 if (!auto_saved && !inhibit_auto_save_session
|
|
|
4060 && !NILP (Vauto_save_list_file_prefix)
|
|
|
4061 && STRINGP (listfile) && listdesc < 0)
|
|
428
|
4062 {
|
|
771
|
4063 listdesc =
|
|
|
4064 qxe_open (XSTRING_DATA (listfile),
|
|
|
4065 O_WRONLY | O_TRUNC | O_CREAT | OPEN_BINARY,
|
|
|
4066 CREAT_MODE);
|
|
428
|
4067
|
|
|
4068 /* Arrange to close that file whether or not we get
|
|
|
4069 an error. */
|
|
|
4070 if (listdesc >= 0)
|
|
|
4071 record_unwind_protect (do_auto_save_unwind,
|
|
|
4072 make_int (listdesc));
|
|
|
4073 }
|
|
|
4074
|
|
|
4075 /* Record all the buffers that we are auto-saving in
|
|
|
4076 the special file that lists them. For each of
|
|
|
4077 these buffers, record visited name (if any) and
|
|
|
4078 auto save name. */
|
|
|
4079 if (listdesc >= 0)
|
|
|
4080 {
|
|
442
|
4081 const Extbyte *auto_save_file_name_ext;
|
|
665
|
4082 Bytecount auto_save_file_name_ext_len;
|
|
428
|
4083
|
|
440
|
4084 TO_EXTERNAL_FORMAT (LISP_STRING, b->auto_save_file_name,
|
|
|
4085 ALLOCA, (auto_save_file_name_ext,
|
|
|
4086 auto_save_file_name_ext_len),
|
|
771
|
4087 Qescape_quoted);
|
|
428
|
4088 if (!NILP (b->filename))
|
|
|
4089 {
|
|
442
|
4090 const Extbyte *filename_ext;
|
|
665
|
4091 Bytecount filename_ext_len;
|
|
428
|
4092
|
|
440
|
4093 TO_EXTERNAL_FORMAT (LISP_STRING, b->filename,
|
|
|
4094 ALLOCA, (filename_ext,
|
|
|
4095 filename_ext_len),
|
|
771
|
4096 Qescape_quoted);
|
|
|
4097 retry_write (listdesc, filename_ext, filename_ext_len);
|
|
428
|
4098 }
|
|
771
|
4099 retry_write (listdesc, "\n", 1);
|
|
|
4100 retry_write (listdesc, auto_save_file_name_ext,
|
|
428
|
4101 auto_save_file_name_ext_len);
|
|
771
|
4102 retry_write (listdesc, "\n", 1);
|
|
428
|
4103 }
|
|
|
4104
|
|
|
4105 /* dmoore - In a bad scenario we've set b=XBUFFER(buf)
|
|
|
4106 based on values in Vbuffer_alist. auto_save_1 may
|
|
|
4107 cause lisp handlers to run. Those handlers may kill
|
|
|
4108 the buffer and then GC. Since the buffer is killed,
|
|
|
4109 it's no longer in Vbuffer_alist so it might get reaped
|
|
|
4110 by the GC. We also need to protect tail. */
|
|
|
4111 /* #### There is probably a lot of other code which has
|
|
|
4112 pointers into buffers which may get blown away by
|
|
|
4113 handlers. */
|
|
|
4114 {
|
|
|
4115 struct gcpro ngcpro1, ngcpro2;
|
|
|
4116 NGCPRO2 (buf, tail);
|
|
|
4117 condition_case_1 (Qt,
|
|
|
4118 auto_save_1, Qnil,
|
|
|
4119 auto_save_error, Qnil);
|
|
|
4120 NUNGCPRO;
|
|
|
4121 }
|
|
|
4122 /* Handler killed our saved current-buffer! Pick any. */
|
|
|
4123 if (!BUFFER_LIVE_P (XBUFFER (old)))
|
|
793
|
4124 old = wrap_buffer (current_buffer);
|
|
428
|
4125
|
|
|
4126 set_buffer_internal (XBUFFER (old));
|
|
|
4127 auto_saved++;
|
|
|
4128
|
|
|
4129 /* Handler killed their own buffer! */
|
|
|
4130 if (!BUFFER_LIVE_P(b))
|
|
|
4131 continue;
|
|
|
4132
|
|
|
4133 b->auto_save_modified = BUF_MODIFF (b);
|
|
|
4134 b->saved_size = make_int (BUF_SIZE (b));
|
|
|
4135 EMACS_GET_TIME (after_time);
|
|
|
4136 /* If auto-save took more than 60 seconds,
|
|
|
4137 assume it was an NFS failure that got a timeout. */
|
|
|
4138 if (EMACS_SECS (after_time) - EMACS_SECS (before_time) > 60)
|
|
|
4139 b->auto_save_failure_time = EMACS_SECS (after_time);
|
|
|
4140 }
|
|
|
4141 }
|
|
|
4142 }
|
|
|
4143
|
|
|
4144 /* Prevent another auto save till enough input events come in. */
|
|
|
4145 if (auto_saved)
|
|
|
4146 record_auto_save ();
|
|
|
4147
|
|
|
4148 /* If we didn't save anything into the listfile, remove the old
|
|
|
4149 one because nothing needed to be auto-saved. Do this afterwards
|
|
|
4150 rather than before in case we get a crash attempting to autosave
|
|
|
4151 (in that case we'd still want the old one around). */
|
|
|
4152 if (listdesc < 0 && !auto_saved && STRINGP (listfile))
|
|
771
|
4153 qxe_unlink (XSTRING_DATA (listfile));
|
|
428
|
4154
|
|
|
4155 /* Show "...done" only if the echo area would otherwise be empty. */
|
|
|
4156 if (auto_saved && NILP (no_message)
|
|
|
4157 && NILP (clear_echo_area (selected_frame (), Qauto_saving, 0)))
|
|
|
4158 {
|
|
1333
|
4159 static const Ibyte *msg = (const Ibyte *)"Auto-saving...done";
|
|
428
|
4160 echo_area_message (selected_frame (), msg, Qnil, 0,
|
|
1333
|
4161 qxestrlen (msg), Qauto_saving);
|
|
428
|
4162 }
|
|
|
4163
|
|
|
4164 Vquit_flag = oquit;
|
|
|
4165
|
|
771
|
4166 RETURN_UNGCPRO (unbind_to (speccount));
|
|
428
|
4167 }
|
|
|
4168
|
|
|
4169 DEFUN ("set-buffer-auto-saved", Fset_buffer_auto_saved, 0, 0, 0, /*
|
|
|
4170 Mark current buffer as auto-saved with its current text.
|
|
|
4171 No auto-save file will be written until the buffer changes again.
|
|
|
4172 */
|
|
|
4173 ())
|
|
|
4174 {
|
|
|
4175 current_buffer->auto_save_modified = BUF_MODIFF (current_buffer);
|
|
|
4176 current_buffer->saved_size = make_int (BUF_SIZE (current_buffer));
|
|
|
4177 current_buffer->auto_save_failure_time = -1;
|
|
|
4178 return Qnil;
|
|
|
4179 }
|
|
|
4180
|
|
|
4181 DEFUN ("clear-buffer-auto-save-failure", Fclear_buffer_auto_save_failure, 0, 0, 0, /*
|
|
|
4182 Clear any record of a recent auto-save failure in the current buffer.
|
|
|
4183 */
|
|
|
4184 ())
|
|
|
4185 {
|
|
|
4186 current_buffer->auto_save_failure_time = -1;
|
|
|
4187 return Qnil;
|
|
|
4188 }
|
|
|
4189
|
|
|
4190 DEFUN ("recent-auto-save-p", Frecent_auto_save_p, 0, 0, 0, /*
|
|
|
4191 Return t if buffer has been auto-saved since last read in or saved.
|
|
|
4192 */
|
|
|
4193 ())
|
|
|
4194 {
|
|
|
4195 return (BUF_SAVE_MODIFF (current_buffer) <
|
|
|
4196 current_buffer->auto_save_modified) ? Qt : Qnil;
|
|
|
4197 }
|
|
|
4198
|
|
|
4199
|
|
|
4200 /************************************************************************/
|
|
|
4201 /* initialization */
|
|
|
4202 /************************************************************************/
|
|
|
4203
|
|
|
4204 void
|
|
|
4205 syms_of_fileio (void)
|
|
|
4206 {
|
|
563
|
4207 DEFSYMBOL (Qexpand_file_name);
|
|
|
4208 DEFSYMBOL (Qfile_truename);
|
|
|
4209 DEFSYMBOL (Qsubstitute_in_file_name);
|
|
|
4210 DEFSYMBOL (Qdirectory_file_name);
|
|
|
4211 DEFSYMBOL (Qfile_name_directory);
|
|
|
4212 DEFSYMBOL (Qfile_name_nondirectory);
|
|
996
|
4213 DEFSYMBOL (Qfile_name_sans_extension);
|
|
563
|
4214 DEFSYMBOL (Qunhandled_file_name_directory);
|
|
|
4215 DEFSYMBOL (Qfile_name_as_directory);
|
|
|
4216 DEFSYMBOL (Qcopy_file);
|
|
|
4217 DEFSYMBOL (Qmake_directory_internal);
|
|
|
4218 DEFSYMBOL (Qdelete_directory);
|
|
|
4219 DEFSYMBOL (Qdelete_file);
|
|
|
4220 DEFSYMBOL (Qrename_file);
|
|
|
4221 DEFSYMBOL (Qadd_name_to_file);
|
|
|
4222 DEFSYMBOL (Qmake_symbolic_link);
|
|
844
|
4223 DEFSYMBOL (Qmake_temp_name);
|
|
563
|
4224 DEFSYMBOL (Qfile_exists_p);
|
|
|
4225 DEFSYMBOL (Qfile_executable_p);
|
|
|
4226 DEFSYMBOL (Qfile_readable_p);
|
|
|
4227 DEFSYMBOL (Qfile_symlink_p);
|
|
|
4228 DEFSYMBOL (Qfile_writable_p);
|
|
|
4229 DEFSYMBOL (Qfile_directory_p);
|
|
|
4230 DEFSYMBOL (Qfile_regular_p);
|
|
|
4231 DEFSYMBOL (Qfile_accessible_directory_p);
|
|
|
4232 DEFSYMBOL (Qfile_modes);
|
|
|
4233 DEFSYMBOL (Qset_file_modes);
|
|
|
4234 DEFSYMBOL (Qfile_newer_than_file_p);
|
|
|
4235 DEFSYMBOL (Qinsert_file_contents);
|
|
|
4236 DEFSYMBOL (Qwrite_region);
|
|
|
4237 DEFSYMBOL (Qverify_visited_file_modtime);
|
|
|
4238 DEFSYMBOL (Qset_visited_file_modtime);
|
|
|
4239 DEFSYMBOL (Qcar_less_than_car); /* Vomitous! */
|
|
|
4240
|
|
|
4241 DEFSYMBOL (Qauto_save_hook);
|
|
|
4242 DEFSYMBOL (Qauto_save_error);
|
|
|
4243 DEFSYMBOL (Qauto_saving);
|
|
|
4244
|
|
|
4245 DEFSYMBOL (Qformat_decode);
|
|
|
4246 DEFSYMBOL (Qformat_annotate_function);
|
|
|
4247
|
|
|
4248 DEFSYMBOL (Qcompute_buffer_file_truename);
|
|
|
4249
|
|
442
|
4250 DEFERROR_STANDARD (Qfile_already_exists, Qfile_error);
|
|
428
|
4251
|
|
|
4252 DEFSUBR (Ffind_file_name_handler);
|
|
|
4253
|
|
|
4254 DEFSUBR (Ffile_name_directory);
|
|
|
4255 DEFSUBR (Ffile_name_nondirectory);
|
|
|
4256 DEFSUBR (Funhandled_file_name_directory);
|
|
|
4257 DEFSUBR (Ffile_name_as_directory);
|
|
|
4258 DEFSUBR (Fdirectory_file_name);
|
|
|
4259 DEFSUBR (Fmake_temp_name);
|
|
|
4260 DEFSUBR (Fexpand_file_name);
|
|
|
4261 DEFSUBR (Ffile_truename);
|
|
|
4262 DEFSUBR (Fsubstitute_in_file_name);
|
|
|
4263 DEFSUBR (Fcopy_file);
|
|
|
4264 DEFSUBR (Fmake_directory_internal);
|
|
|
4265 DEFSUBR (Fdelete_directory);
|
|
|
4266 DEFSUBR (Fdelete_file);
|
|
|
4267 DEFSUBR (Frename_file);
|
|
|
4268 DEFSUBR (Fadd_name_to_file);
|
|
|
4269 DEFSUBR (Fmake_symbolic_link);
|
|
|
4270 #ifdef HPUX_NET
|
|
|
4271 DEFSUBR (Fsysnetunam);
|
|
|
4272 #endif /* HPUX_NET */
|
|
|
4273 DEFSUBR (Ffile_name_absolute_p);
|
|
|
4274 DEFSUBR (Ffile_exists_p);
|
|
|
4275 DEFSUBR (Ffile_executable_p);
|
|
|
4276 DEFSUBR (Ffile_readable_p);
|
|
|
4277 DEFSUBR (Ffile_writable_p);
|
|
|
4278 DEFSUBR (Ffile_symlink_p);
|
|
|
4279 DEFSUBR (Ffile_directory_p);
|
|
|
4280 DEFSUBR (Ffile_accessible_directory_p);
|
|
|
4281 DEFSUBR (Ffile_regular_p);
|
|
|
4282 DEFSUBR (Ffile_modes);
|
|
|
4283 DEFSUBR (Fset_file_modes);
|
|
|
4284 DEFSUBR (Fset_default_file_modes);
|
|
|
4285 DEFSUBR (Fdefault_file_modes);
|
|
|
4286 DEFSUBR (Funix_sync);
|
|
|
4287 DEFSUBR (Ffile_newer_than_file_p);
|
|
|
4288 DEFSUBR (Finsert_file_contents_internal);
|
|
|
4289 DEFSUBR (Fwrite_region_internal);
|
|
|
4290 DEFSUBR (Fcar_less_than_car); /* Vomitous! */
|
|
|
4291 DEFSUBR (Fcdr_less_than_cdr); /* Yeah oh yeah bucko .... */
|
|
|
4292 #if 0
|
|
|
4293 DEFSUBR (Fencrypt_string);
|
|
|
4294 DEFSUBR (Fdecrypt_string);
|
|
|
4295 #endif
|
|
|
4296 DEFSUBR (Fverify_visited_file_modtime);
|
|
|
4297 DEFSUBR (Fclear_visited_file_modtime);
|
|
|
4298 DEFSUBR (Fvisited_file_modtime);
|
|
|
4299 DEFSUBR (Fset_visited_file_modtime);
|
|
|
4300
|
|
|
4301 DEFSUBR (Fdo_auto_save);
|
|
|
4302 DEFSUBR (Fset_buffer_auto_saved);
|
|
|
4303 DEFSUBR (Fclear_buffer_auto_save_failure);
|
|
|
4304 DEFSUBR (Frecent_auto_save_p);
|
|
|
4305 }
|
|
|
4306
|
|
|
4307 void
|
|
|
4308 vars_of_fileio (void)
|
|
|
4309 {
|
|
|
4310 DEFVAR_LISP ("auto-save-file-format", &Vauto_save_file_format /*
|
|
|
4311 *Format in which to write auto-save files.
|
|
|
4312 Should be a list of symbols naming formats that are defined in `format-alist'.
|
|
|
4313 If it is t, which is the default, auto-save files are written in the
|
|
|
4314 same format as a regular save would use.
|
|
|
4315 */ );
|
|
|
4316 Vauto_save_file_format = Qt;
|
|
|
4317
|
|
|
4318 DEFVAR_LISP ("file-name-handler-alist", &Vfile_name_handler_alist /*
|
|
|
4319 *Alist of elements (REGEXP . HANDLER) for file names handled specially.
|
|
|
4320 If a file name matches REGEXP, then all I/O on that file is done by calling
|
|
|
4321 HANDLER.
|
|
|
4322
|
|
|
4323 The first argument given to HANDLER is the name of the I/O primitive
|
|
|
4324 to be handled; the remaining arguments are the arguments that were
|
|
|
4325 passed to that primitive. For example, if you do
|
|
|
4326 (file-exists-p FILENAME)
|
|
|
4327 and FILENAME is handled by HANDLER, then HANDLER is called like this:
|
|
|
4328 (funcall HANDLER 'file-exists-p FILENAME)
|
|
|
4329 The function `find-file-name-handler' checks this list for a handler
|
|
|
4330 for its argument.
|
|
|
4331 */ );
|
|
|
4332 Vfile_name_handler_alist = Qnil;
|
|
|
4333
|
|
|
4334 DEFVAR_LISP ("after-insert-file-functions", &Vafter_insert_file_functions /*
|
|
|
4335 A list of functions to be called at the end of `insert-file-contents'.
|
|
|
4336 Each is passed one argument, the number of bytes inserted. It should return
|
|
|
4337 the new byte count, and leave point the same. If `insert-file-contents' is
|
|
|
4338 intercepted by a handler from `file-name-handler-alist', that handler is
|
|
|
4339 responsible for calling the after-insert-file-functions if appropriate.
|
|
|
4340 */ );
|
|
|
4341 Vafter_insert_file_functions = Qnil;
|
|
|
4342
|
|
|
4343 DEFVAR_LISP ("write-region-annotate-functions",
|
|
|
4344 &Vwrite_region_annotate_functions /*
|
|
|
4345 A list of functions to be called at the start of `write-region'.
|
|
|
4346 Each is passed two arguments, START and END, as for `write-region'.
|
|
|
4347 It should return a list of pairs (POSITION . STRING) of strings to be
|
|
|
4348 effectively inserted at the specified positions of the file being written
|
|
|
4349 \(1 means to insert before the first byte written). The POSITIONs must be
|
|
|
4350 sorted into increasing order. If there are several functions in the list,
|
|
|
4351 the several lists are merged destructively.
|
|
|
4352 */ );
|
|
|
4353 Vwrite_region_annotate_functions = Qnil;
|
|
|
4354
|
|
|
4355 DEFVAR_LISP ("write-region-annotations-so-far",
|
|
|
4356 &Vwrite_region_annotations_so_far /*
|
|
|
4357 When an annotation function is called, this holds the previous annotations.
|
|
|
4358 These are the annotations made by other annotation functions
|
|
|
4359 that were already called. See also `write-region-annotate-functions'.
|
|
|
4360 */ );
|
|
|
4361 Vwrite_region_annotations_so_far = Qnil;
|
|
|
4362
|
|
|
4363 DEFVAR_LISP ("inhibit-file-name-handlers", &Vinhibit_file_name_handlers /*
|
|
|
4364 A list of file name handlers that temporarily should not be used.
|
|
|
4365 This applies only to the operation `inhibit-file-name-operation'.
|
|
|
4366 */ );
|
|
|
4367 Vinhibit_file_name_handlers = Qnil;
|
|
|
4368
|
|
|
4369 DEFVAR_LISP ("inhibit-file-name-operation", &Vinhibit_file_name_operation /*
|
|
|
4370 The operation for which `inhibit-file-name-handlers' is applicable.
|
|
|
4371 */ );
|
|
|
4372 Vinhibit_file_name_operation = Qnil;
|
|
|
4373
|
|
|
4374 DEFVAR_LISP ("auto-save-list-file-name", &Vauto_save_list_file_name /*
|
|
|
4375 File name in which we write a list of all auto save file names.
|
|
|
4376 */ );
|
|
|
4377 Vauto_save_list_file_name = Qnil;
|
|
|
4378
|
|
444
|
4379 DEFVAR_LISP ("auto-save-list-file-prefix", &Vauto_save_list_file_prefix /*
|
|
|
4380 Prefix for generating auto-save-list-file-name.
|
|
|
4381 Emacs's pid and the system name will be appended to
|
|
|
4382 this prefix to create a unique file name.
|
|
|
4383 */ );
|
|
|
4384 Vauto_save_list_file_prefix = build_string ("~/.saves-");
|
|
|
4385
|
|
|
4386 DEFVAR_BOOL ("inhibit-auto-save-session", &inhibit_auto_save_session /*
|
|
|
4387 When non-nil, inhibit auto save list file creation.
|
|
|
4388 */ );
|
|
|
4389 inhibit_auto_save_session = 0;
|
|
|
4390
|
|
428
|
4391 DEFVAR_BOOL ("disable-auto-save-when-buffer-shrinks",
|
|
|
4392 &disable_auto_save_when_buffer_shrinks /*
|
|
|
4393 If non-nil, auto-saving is disabled when a buffer shrinks too much.
|
|
|
4394 This is to prevent you from losing your edits if you accidentally
|
|
|
4395 delete a large chunk of the buffer and don't notice it until too late.
|
|
|
4396 Saving the buffer normally turns auto-save back on.
|
|
|
4397 */ );
|
|
|
4398 disable_auto_save_when_buffer_shrinks = 1;
|
|
|
4399
|
|
|
4400 DEFVAR_LISP ("directory-sep-char", &Vdirectory_sep_char /*
|
|
|
4401 Directory separator character for built-in functions that return file names.
|
|
|
4402 The value should be either ?/ or ?\\ (any other value is treated as ?\\).
|
|
|
4403 This variable affects the built-in functions only on Windows,
|
|
|
4404 on other platforms, it is initialized so that Lisp code can find out
|
|
|
4405 what the normal separator is.
|
|
|
4406 */ );
|
|
771
|
4407 Vdirectory_sep_char = make_char (DEFAULT_DIRECTORY_SEP);
|
|
442
|
4408
|
|
|
4409 reinit_vars_of_fileio ();
|
|
428
|
4410 }
|
|
442
|
4411
|
|
|
4412 void
|
|
|
4413 reinit_vars_of_fileio (void)
|
|
|
4414 {
|
|
|
4415 /* We want temp_name_rand to be initialized to a value likely to be
|
|
|
4416 unique to the process, not to the executable. The danger is that
|
|
|
4417 two different XEmacs processes using the same binary on different
|
|
|
4418 machines creating temp files in the same directory will be
|
|
|
4419 unlucky enough to have the same pid. If we randomize using
|
|
|
4420 process startup time, then in practice they will be unlikely to
|
|
|
4421 collide. We use the microseconds field so that scripts that start
|
|
|
4422 simultaneous XEmacs processes on multiple machines will have less
|
|
|
4423 chance of collision. */
|
|
|
4424 {
|
|
|
4425 EMACS_TIME thyme;
|
|
|
4426
|
|
|
4427 EMACS_GET_TIME (thyme);
|
|
|
4428 temp_name_rand = (unsigned int) (EMACS_SECS (thyme) ^ EMACS_USECS (thyme));
|
|
|
4429 }
|
|
|
4430 }
|
