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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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771
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3 Copyright (C) 1996, 2001, 2002 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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28
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428
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29
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30 #include <config.h>
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31 #include "lisp.h"
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32
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33 #include "buffer.h"
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800
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34 #include "device.h"
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428
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35 #include "events.h"
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800
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36 #include "file-coding.h"
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428
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37 #include "frame.h"
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38 #include "insdel.h"
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39 #include "lstream.h"
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872
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40 #include "process.h"
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428
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41 #include "redisplay.h"
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42 #include "sysdep.h"
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872
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43 #include "window-impl.h"
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771
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44
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428
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45 #include "sysfile.h"
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46 #include "sysproc.h"
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|
47 #include "syspwd.h"
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48 #include "systime.h"
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49 #include "sysdir.h"
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50
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|
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51 #ifdef HPUX
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|
52 #include <netio.h>
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|
53 #ifdef HPUX_PRE_8_0
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|
54 #include <errnet.h>
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|
|
55 #endif /* HPUX_PRE_8_0 */
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|
|
56 #endif /* HPUX */
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57
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771
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58 #if defined (WIN32_NATIVE) || defined (CYGWIN)
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657
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59 #define WIN32_FILENAMES
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771
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60 #include "syswindows.h"
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428
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61 #define IS_DRIVE(x) isalpha (x)
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62 /* Need to lower-case the drive letter, or else expanded
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63 filenames will sometimes compare inequal, because
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64 `expand-file-name' doesn't always down-case the drive letter. */
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65 #define DRIVE_LETTER(x) tolower (x)
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657
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66 #endif /* WIN32_NATIVE || CYGWIN */
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428
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67
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68 int lisp_to_time (Lisp_Object, time_t *);
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69 Lisp_Object time_to_lisp (time_t);
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70
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71 /* Nonzero during writing of auto-save files */
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72 static int auto_saving;
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73
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74 /* Set by auto_save_1 to mode of original file so Fwrite_region_internal
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75 will create a new file with the same mode as the original */
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76 static int auto_save_mode_bits;
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77
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78 /* Alist of elements (REGEXP . HANDLER) for file names
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79 whose I/O is done with a special handler. */
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80 Lisp_Object Vfile_name_handler_alist;
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81
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82 /* Format for auto-save files */
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83 Lisp_Object Vauto_save_file_format;
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84
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85 /* Lisp functions for translating file formats */
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86 Lisp_Object Qformat_decode, Qformat_annotate_function;
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87
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88 /* Functions to be called to process text properties in inserted file. */
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89 Lisp_Object Vafter_insert_file_functions;
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90
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91 /* Functions to be called to create text property annotations for file. */
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92 Lisp_Object Vwrite_region_annotate_functions;
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93
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94 /* During build_annotations, each time an annotation function is called,
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95 this holds the annotations made by the previous functions. */
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96 Lisp_Object Vwrite_region_annotations_so_far;
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97
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98 /* File name in which we write a list of all our auto save files. */
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99 Lisp_Object Vauto_save_list_file_name;
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100
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444
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101 /* Prefix used to construct Vauto_save_list_file_name. */
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102 Lisp_Object Vauto_save_list_file_prefix;
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103
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104 /* When non-nil, it prevents auto-save list file creation. */
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105 int inhibit_auto_save_session;
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106
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428
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107 int disable_auto_save_when_buffer_shrinks;
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108
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109 Lisp_Object Vdirectory_sep_char;
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110
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111 /* These variables describe handlers that have "already" had a chance
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112 to handle the current operation.
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113
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114 Vinhibit_file_name_handlers is a list of file name handlers.
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115 Vinhibit_file_name_operation is the operation being handled.
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116 If we try to handle that operation, we ignore those handlers. */
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117
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118 static Lisp_Object Vinhibit_file_name_handlers;
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119 static Lisp_Object Vinhibit_file_name_operation;
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120
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563
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121 Lisp_Object Qfile_already_exists;
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428
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122
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123 Lisp_Object Qauto_save_hook;
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124 Lisp_Object Qauto_save_error;
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125 Lisp_Object Qauto_saving;
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126
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127 Lisp_Object Qcar_less_than_car;
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128
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129 Lisp_Object Qcompute_buffer_file_truename;
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130
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131 EXFUN (Frunning_temacs_p, 0);
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132
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563
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133 /* DATA can be anything acceptable to signal_error ().
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134 */
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135
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136 DOESNT_RETURN
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137 report_file_type_error (Lisp_Object errtype, Lisp_Object oserrmess,
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867
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138 const CIbyte *string, Lisp_Object data)
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563
|
139 {
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140 struct gcpro gcpro1;
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141 Lisp_Object errdata = build_error_data (NULL, data);
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142
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143 GCPRO1 (errdata);
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771
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144 errdata = Fcons (build_msg_string (string),
|
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563
|
145 Fcons (oserrmess, errdata));
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146 signal_error_1 (errtype, errdata);
|
|
801
|
147 /* UNGCPRO; not reached */
|
|
563
|
148 }
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149
|
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150 DOESNT_RETURN
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151 report_error_with_errno (Lisp_Object errtype,
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867
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152 const CIbyte *string, Lisp_Object data)
|
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563
|
153 {
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|
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154 report_file_type_error (errtype, lisp_strerror (errno), string, data);
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155 }
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|
156
|
|
428
|
157 /* signal a file error when errno contains a meaningful value. */
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|
158
|
|
|
159 DOESNT_RETURN
|
|
867
|
160 report_file_error (const CIbyte *string, Lisp_Object data)
|
|
428
|
161 {
|
|
563
|
162 report_error_with_errno (Qfile_error, string, data);
|
|
428
|
163 }
|
|
|
164
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165
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|
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166 /* Just like strerror(3), except return a lisp string instead of char *.
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167 The string needs to be converted since it may be localized.
|
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771
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168 */
|
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428
|
169 Lisp_Object
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170 lisp_strerror (int errnum)
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171 {
|
|
771
|
172 Extbyte *ret = strerror (errnum);
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|
|
173 if (!ret)
|
|
|
174 {
|
|
867
|
175 Ibyte ffff[99];
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|
771
|
176 qxesprintf (ffff, "Unknown error %d", errnum);
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|
|
177 return build_intstring (ffff);
|
|
|
178 }
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|
|
179 return build_ext_string (ret, Qstrerror_encoding);
|
|
428
|
180 }
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181
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|
|
182 static Lisp_Object
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183 close_file_unwind (Lisp_Object fd)
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|
|
184 {
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|
185 if (CONSP (fd))
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|
186 {
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|
|
187 if (INTP (XCAR (fd)))
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771
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188 retry_close (XINT (XCAR (fd)));
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|
428
|
189
|
|
853
|
190 free_cons (fd);
|
|
428
|
191 }
|
|
|
192 else
|
|
771
|
193 retry_close (XINT (fd));
|
|
428
|
194
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|
|
195 return Qnil;
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|
|
196 }
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197
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|
|
198 static Lisp_Object
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|
|
199 delete_stream_unwind (Lisp_Object stream)
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|
|
200 {
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|
|
201 Lstream_delete (XLSTREAM (stream));
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|
202 return Qnil;
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|
|
203 }
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204
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|
205 /* Restore point, having saved it as a marker. */
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|
|
206
|
|
|
207 static Lisp_Object
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|
|
208 restore_point_unwind (Lisp_Object point_marker)
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|
|
209 {
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|
|
210 BUF_SET_PT (current_buffer, marker_position (point_marker));
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|
|
211 return Fset_marker (point_marker, Qnil, Qnil);
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|
|
212 }
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|
|
213
|
|
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214
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|
|
215 Lisp_Object Qexpand_file_name;
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|
|
216 Lisp_Object Qfile_truename;
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|
|
217 Lisp_Object Qsubstitute_in_file_name;
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|
|
218 Lisp_Object Qdirectory_file_name;
|
|
|
219 Lisp_Object Qfile_name_directory;
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|
|
220 Lisp_Object Qfile_name_nondirectory;
|
|
996
|
221 Lisp_Object Qfile_name_sans_extension;
|
|
428
|
222 Lisp_Object Qunhandled_file_name_directory;
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|
|
223 Lisp_Object Qfile_name_as_directory;
|
|
|
224 Lisp_Object Qcopy_file;
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|
|
225 Lisp_Object Qmake_directory_internal;
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226 Lisp_Object Qdelete_directory;
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227 Lisp_Object Qdelete_file;
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|
|
228 Lisp_Object Qrename_file;
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|
|
229 Lisp_Object Qadd_name_to_file;
|
|
|
230 Lisp_Object Qmake_symbolic_link;
|
|
844
|
231 Lisp_Object Qmake_temp_name;
|
|
428
|
232 Lisp_Object Qfile_exists_p;
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|
|
233 Lisp_Object Qfile_executable_p;
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|
|
234 Lisp_Object Qfile_readable_p;
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|
|
235 Lisp_Object Qfile_symlink_p;
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|
236 Lisp_Object Qfile_writable_p;
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|
|
237 Lisp_Object Qfile_directory_p;
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|
|
238 Lisp_Object Qfile_regular_p;
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|
|
239 Lisp_Object Qfile_accessible_directory_p;
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|
|
240 Lisp_Object Qfile_modes;
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|
|
241 Lisp_Object Qset_file_modes;
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|
242 Lisp_Object Qfile_newer_than_file_p;
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|
|
243 Lisp_Object Qinsert_file_contents;
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|
|
244 Lisp_Object Qwrite_region;
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|
|
245 Lisp_Object Qverify_visited_file_modtime;
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|
|
246 Lisp_Object Qset_visited_file_modtime;
|
|
|
247
|
|
|
248 /* If FILENAME is handled specially on account of its syntax,
|
|
|
249 return its handler function. Otherwise, return nil. */
|
|
|
250
|
|
|
251 DEFUN ("find-file-name-handler", Ffind_file_name_handler, 1, 2, 0, /*
|
|
|
252 Return FILENAME's handler function for OPERATION, if it has one.
|
|
|
253 Otherwise, return nil.
|
|
|
254 A file name is handled if one of the regular expressions in
|
|
|
255 `file-name-handler-alist' matches it.
|
|
|
256
|
|
|
257 If OPERATION equals `inhibit-file-name-operation', then we ignore
|
|
|
258 any handlers that are members of `inhibit-file-name-handlers',
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|
|
259 but we still do run any other handlers. This lets handlers
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|
|
260 use the standard functions without calling themselves recursively.
|
|
751
|
261
|
|
|
262 Otherwise, OPERATION is the name of a funcall'able function.
|
|
428
|
263 */
|
|
|
264 (filename, operation))
|
|
|
265 {
|
|
|
266 /* This function does not GC */
|
|
|
267 /* This function can be called during GC */
|
|
|
268 /* This function must not munge the match data. */
|
|
|
269 Lisp_Object chain, inhibited_handlers;
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|
|
270
|
|
|
271 CHECK_STRING (filename);
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|
|
272
|
|
|
273 if (EQ (operation, Vinhibit_file_name_operation))
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|
|
274 inhibited_handlers = Vinhibit_file_name_handlers;
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|
|
275 else
|
|
|
276 inhibited_handlers = Qnil;
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|
|
277
|
|
|
278 EXTERNAL_LIST_LOOP (chain, Vfile_name_handler_alist)
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|
|
279 {
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|
|
280 Lisp_Object elt = XCAR (chain);
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|
|
281 if (CONSP (elt))
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|
|
282 {
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|
|
283 Lisp_Object string = XCAR (elt);
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|
|
284 if (STRINGP (string)
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|
|
285 && (fast_lisp_string_match (string, filename) >= 0))
|
|
|
286 {
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|
|
287 Lisp_Object handler = XCDR (elt);
|
|
|
288 if (NILP (Fmemq (handler, inhibited_handlers)))
|
|
|
289 return handler;
|
|
|
290 }
|
|
|
291 }
|
|
|
292 QUIT;
|
|
|
293 }
|
|
|
294 return Qnil;
|
|
|
295 }
|
|
|
296
|
|
|
297 static Lisp_Object
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|
|
298 call2_check_string (Lisp_Object fn, Lisp_Object arg0, Lisp_Object arg1)
|
|
|
299 {
|
|
|
300 /* This function can call lisp */
|
|
|
301 Lisp_Object result = call2 (fn, arg0, arg1);
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|
|
302 CHECK_STRING (result);
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|
|
303 return result;
|
|
|
304 }
|
|
|
305
|
|
|
306 static Lisp_Object
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|
|
307 call2_check_string_or_nil (Lisp_Object fn, Lisp_Object arg0, Lisp_Object arg1)
|
|
|
308 {
|
|
|
309 /* This function can call lisp */
|
|
|
310 Lisp_Object result = call2 (fn, arg0, arg1);
|
|
|
311 if (!NILP (result))
|
|
|
312 CHECK_STRING (result);
|
|
|
313 return result;
|
|
|
314 }
|
|
|
315
|
|
|
316 static Lisp_Object
|
|
|
317 call3_check_string (Lisp_Object fn, Lisp_Object arg0,
|
|
|
318 Lisp_Object arg1, Lisp_Object arg2)
|
|
|
319 {
|
|
|
320 /* This function can call lisp */
|
|
|
321 Lisp_Object result = call3 (fn, arg0, arg1, arg2);
|
|
|
322 CHECK_STRING (result);
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|
|
323 return result;
|
|
|
324 }
|
|
|
325
|
|
|
326
|
|
|
327 DEFUN ("file-name-directory", Ffile_name_directory, 1, 1, 0, /*
|
|
444
|
328 Return the directory component in file name FILENAME.
|
|
|
329 Return nil if FILENAME does not include a directory.
|
|
428
|
330 Otherwise return a directory spec.
|
|
|
331 Given a Unix syntax file name, returns a string ending in slash.
|
|
|
332 */
|
|
444
|
333 (filename))
|
|
428
|
334 {
|
|
442
|
335 /* This function can GC. GC checked 2000-07-28 ben */
|
|
771
|
336 /* This function synched with Emacs 21.0.103. */
|
|
867
|
337 Ibyte *beg;
|
|
|
338 Ibyte *p;
|
|
428
|
339 Lisp_Object handler;
|
|
|
340
|
|
444
|
341 CHECK_STRING (filename);
|
|
428
|
342
|
|
|
343 /* If the file name has special constructs in it,
|
|
|
344 call the corresponding file handler. */
|
|
444
|
345 handler = Ffind_file_name_handler (filename, Qfile_name_directory);
|
|
428
|
346 if (!NILP (handler))
|
|
444
|
347 return call2_check_string_or_nil (handler, Qfile_name_directory, filename);
|
|
428
|
348
|
|
|
349 #ifdef FILE_SYSTEM_CASE
|
|
444
|
350 filename = FILE_SYSTEM_CASE (filename);
|
|
428
|
351 #endif
|
|
444
|
352 beg = XSTRING_DATA (filename);
|
|
771
|
353 /* XEmacs: no need to alloca-copy here */
|
|
444
|
354 p = beg + XSTRING_LENGTH (filename);
|
|
428
|
355
|
|
771
|
356 while (p != beg && !IS_DIRECTORY_SEP (p[-1])
|
|
657
|
357 #ifdef WIN32_FILENAMES
|
|
771
|
358 /* only recognise drive specifier at the beginning */
|
|
|
359 && !(p[-1] == ':'
|
|
|
360 /* handle the "/:d:foo" and "/:foo" cases correctly */
|
|
|
361 && ((p == beg + 2 && !IS_DIRECTORY_SEP (*beg))
|
|
|
362 || (p == beg + 4 && IS_DIRECTORY_SEP (*beg))))
|
|
428
|
363 #endif
|
|
771
|
364 ) p--;
|
|
428
|
365
|
|
|
366 if (p == beg)
|
|
|
367 return Qnil;
|
|
442
|
368 #ifdef WIN32_NATIVE
|
|
428
|
369 /* Expansion of "c:" to drive and default directory. */
|
|
771
|
370 if (p[-1] == ':')
|
|
428
|
371 {
|
|
867
|
372 Ibyte *res;
|
|
|
373 Ibyte *wd = mswindows_getdcwd (toupper (*beg) - 'A' + 1);
|
|
771
|
374
|
|
867
|
375 res = alloca_array (Ibyte,
|
|
771
|
376 (wd ? qxestrlen (wd) : 0) + 10); /* go overboard */
|
|
|
377 if (p == beg + 4 && IS_DIRECTORY_SEP (*beg) && beg[1] == ':')
|
|
|
378 {
|
|
|
379 qxestrncpy (res, beg, 2);
|
|
|
380 beg += 2;
|
|
|
381 }
|
|
|
382
|
|
|
383 if (wd)
|
|
428
|
384 {
|
|
771
|
385 qxestrcat (res, wd);
|
|
|
386 if (!IS_DIRECTORY_SEP (res[qxestrlen (res) - 1]))
|
|
867
|
387 qxestrcat (res, (Ibyte *) "/");
|
|
428
|
388 beg = res;
|
|
771
|
389 p = beg + qxestrlen (beg);
|
|
428
|
390 }
|
|
771
|
391 if (wd)
|
|
|
392 xfree (wd);
|
|
428
|
393 }
|
|
771
|
394
|
|
|
395 #if 0 /* No! This screws up efs, which calls file-name-directory on URL's
|
|
|
396 and expects the slashes to be left alone. This is here because of
|
|
|
397 an analogous call in FSF 21. */
|
|
|
398 {
|
|
|
399 Bytecount len = p - beg;
|
|
867
|
400 Ibyte *newbeg = alloca_ibytes (len + 1);
|
|
771
|
401 Lisp_Object return_me;
|
|
|
402
|
|
|
403 qxestrncpy (newbeg, beg, len);
|
|
|
404 newbeg[len] = '\0';
|
|
|
405 newbeg = mswindows_canonicalize_filename (newbeg);
|
|
|
406 return_me = build_intstring (newbeg);
|
|
|
407 xfree (newbeg);
|
|
|
408 return return_me;
|
|
|
409 }
|
|
|
410 #endif
|
|
|
411 #endif /* not WIN32_NATIVE */
|
|
428
|
412 return make_string (beg, p - beg);
|
|
|
413 }
|
|
|
414
|
|
|
415 DEFUN ("file-name-nondirectory", Ffile_name_nondirectory, 1, 1, 0, /*
|
|
444
|
416 Return file name FILENAME sans its directory.
|
|
428
|
417 For example, in a Unix-syntax file name,
|
|
|
418 this is everything after the last slash,
|
|
|
419 or the entire name if it contains no slash.
|
|
|
420 */
|
|
444
|
421 (filename))
|
|
428
|
422 {
|
|
442
|
423 /* This function can GC. GC checked 2000-07-28 ben */
|
|
771
|
424 /* This function synched with Emacs 21.0.103. */
|
|
867
|
425 Ibyte *beg, *p, *end;
|
|
428
|
426 Lisp_Object handler;
|
|
|
427
|
|
444
|
428 CHECK_STRING (filename);
|
|
428
|
429
|
|
|
430 /* If the file name has special constructs in it,
|
|
|
431 call the corresponding file handler. */
|
|
444
|
432 handler = Ffind_file_name_handler (filename, Qfile_name_nondirectory);
|
|
428
|
433 if (!NILP (handler))
|
|
444
|
434 return call2_check_string (handler, Qfile_name_nondirectory, filename);
|
|
|
435
|
|
|
436 beg = XSTRING_DATA (filename);
|
|
|
437 end = p = beg + XSTRING_LENGTH (filename);
|
|
428
|
438
|
|
771
|
439 while (p != beg && !IS_DIRECTORY_SEP (p[-1])
|
|
657
|
440 #ifdef WIN32_FILENAMES
|
|
771
|
441 /* only recognise drive specifier at beginning */
|
|
|
442 && !(p[-1] == ':'
|
|
|
443 /* handle the "/:d:foo" case correctly */
|
|
|
444 && (p == beg + 2 || (p == beg + 4 && IS_DIRECTORY_SEP (*beg))))
|
|
428
|
445 #endif
|
|
771
|
446 )
|
|
|
447 p--;
|
|
428
|
448
|
|
|
449 return make_string (p, end - p);
|
|
|
450 }
|
|
|
451
|
|
|
452 DEFUN ("unhandled-file-name-directory", Funhandled_file_name_directory, 1, 1, 0, /*
|
|
|
453 Return a directly usable directory name somehow associated with FILENAME.
|
|
|
454 A `directly usable' directory name is one that may be used without the
|
|
|
455 intervention of any file handler.
|
|
|
456 If FILENAME is a directly usable file itself, return
|
|
|
457 \(file-name-directory FILENAME).
|
|
|
458 The `call-process' and `start-process' functions use this function to
|
|
|
459 get a current directory to run processes in.
|
|
|
460 */
|
|
444
|
461 (filename))
|
|
428
|
462 {
|
|
442
|
463 /* This function can GC. GC checked 2000-07-28 ben */
|
|
428
|
464 Lisp_Object handler;
|
|
|
465
|
|
|
466 /* If the file name has special constructs in it,
|
|
|
467 call the corresponding file handler. */
|
|
|
468 handler = Ffind_file_name_handler (filename, Qunhandled_file_name_directory);
|
|
|
469 if (!NILP (handler))
|
|
|
470 return call2 (handler, Qunhandled_file_name_directory,
|
|
|
471 filename);
|
|
|
472
|
|
|
473 return Ffile_name_directory (filename);
|
|
|
474 }
|
|
|
475
|
|
|
476
|
|
867
|
477 static Ibyte *
|
|
|
478 file_name_as_directory (Ibyte *out, Ibyte *in)
|
|
428
|
479 {
|
|
442
|
480 /* This function cannot GC */
|
|
771
|
481 int size = qxestrlen (in);
|
|
428
|
482
|
|
|
483 if (size == 0)
|
|
|
484 {
|
|
|
485 out[0] = '.';
|
|
|
486 out[1] = DIRECTORY_SEP;
|
|
|
487 out[2] = '\0';
|
|
|
488 }
|
|
|
489 else
|
|
|
490 {
|
|
771
|
491 qxestrcpy (out, in);
|
|
428
|
492 /* Append a slash if necessary */
|
|
|
493 if (!IS_ANY_SEP (out[size-1]))
|
|
|
494 {
|
|
|
495 out[size] = DIRECTORY_SEP;
|
|
|
496 out[size + 1] = '\0';
|
|
|
497 }
|
|
|
498 }
|
|
|
499 return out;
|
|
|
500 }
|
|
|
501
|
|
|
502 DEFUN ("file-name-as-directory", Ffile_name_as_directory, 1, 1, 0, /*
|
|
|
503 Return a string representing file FILENAME interpreted as a directory.
|
|
|
504 This operation exists because a directory is also a file, but its name as
|
|
|
505 a directory is different from its name as a file.
|
|
|
506 The result can be used as the value of `default-directory'
|
|
|
507 or passed as second argument to `expand-file-name'.
|
|
|
508 For a Unix-syntax file name, just appends a slash,
|
|
|
509 except for (file-name-as-directory \"\") => \"./\".
|
|
|
510 */
|
|
444
|
511 (filename))
|
|
428
|
512 {
|
|
442
|
513 /* This function can GC. GC checked 2000-07-28 ben */
|
|
867
|
514 Ibyte *buf;
|
|
428
|
515 Lisp_Object handler;
|
|
|
516
|
|
444
|
517 CHECK_STRING (filename);
|
|
428
|
518
|
|
|
519 /* If the file name has special constructs in it,
|
|
|
520 call the corresponding file handler. */
|
|
444
|
521 handler = Ffind_file_name_handler (filename, Qfile_name_as_directory);
|
|
428
|
522 if (!NILP (handler))
|
|
444
|
523 return call2_check_string (handler, Qfile_name_as_directory, filename);
|
|
|
524
|
|
867
|
525 buf = alloca_ibytes (XSTRING_LENGTH (filename) + 10);
|
|
771
|
526 return build_intstring (file_name_as_directory (buf, XSTRING_DATA (filename)));
|
|
428
|
527 }
|
|
|
528
|
|
|
529 /*
|
|
|
530 * Convert from directory name to filename.
|
|
|
531 * On UNIX, it's simple: just make sure there isn't a terminating /
|
|
|
532 *
|
|
|
533 * Value is nonzero if the string output is different from the input.
|
|
|
534 */
|
|
|
535
|
|
|
536 static int
|
|
867
|
537 directory_file_name (const Ibyte *src, Ibyte *dst)
|
|
428
|
538 {
|
|
442
|
539 /* This function cannot GC */
|
|
771
|
540 long slen = qxestrlen (src);
|
|
428
|
541 /* Process as Unix format: just remove any final slash.
|
|
|
542 But leave "/" unchanged; do not change it to "". */
|
|
771
|
543 qxestrcpy (dst, src);
|
|
428
|
544 if (slen > 1
|
|
|
545 && IS_DIRECTORY_SEP (dst[slen - 1])
|
|
657
|
546 #ifdef WIN32_FILENAMES
|
|
428
|
547 && !IS_ANY_SEP (dst[slen - 2])
|
|
657
|
548 #endif /* WIN32_FILENAMES */
|
|
428
|
549 )
|
|
|
550 dst[slen - 1] = 0;
|
|
|
551 return 1;
|
|
|
552 }
|
|
|
553
|
|
|
554 DEFUN ("directory-file-name", Fdirectory_file_name, 1, 1, 0, /*
|
|
444
|
555 Return the file name of the directory named DIRECTORY.
|
|
|
556 This is the name of the file that holds the data for the directory.
|
|
428
|
557 This operation exists because a directory is also a file, but its name as
|
|
|
558 a directory is different from its name as a file.
|
|
|
559 In Unix-syntax, this function just removes the final slash.
|
|
|
560 */
|
|
|
561 (directory))
|
|
|
562 {
|
|
442
|
563 /* This function can GC. GC checked 2000-07-28 ben */
|
|
867
|
564 Ibyte *buf;
|
|
428
|
565 Lisp_Object handler;
|
|
|
566
|
|
|
567 CHECK_STRING (directory);
|
|
|
568
|
|
|
569 #if 0 /* #### WTF? */
|
|
|
570 if (NILP (directory))
|
|
|
571 return Qnil;
|
|
|
572 #endif
|
|
|
573
|
|
|
574 /* If the file name has special constructs in it,
|
|
|
575 call the corresponding file handler. */
|
|
|
576 handler = Ffind_file_name_handler (directory, Qdirectory_file_name);
|
|
|
577 if (!NILP (handler))
|
|
|
578 return call2_check_string (handler, Qdirectory_file_name, directory);
|
|
867
|
579 buf = (Ibyte *) ALLOCA (XSTRING_LENGTH (directory) + 20);
|
|
771
|
580 directory_file_name (XSTRING_DATA (directory), buf);
|
|
|
581 return build_intstring (buf);
|
|
428
|
582 }
|
|
|
583
|
|
|
584 /* Fmake_temp_name used to be a simple wrapper around mktemp(), but it
|
|
|
585 proved too broken for our purposes (it supported only 26 or 62
|
|
|
586 unique names under some implementations). For example, this
|
|
|
587 arbitrary limit broke generation of Gnus Incoming* files.
|
|
|
588
|
|
|
589 This implementation is better than what one usually finds in libc.
|
|
|
590 --hniksic */
|
|
|
591
|
|
442
|
592 static unsigned int temp_name_rand;
|
|
|
593
|
|
428
|
594 DEFUN ("make-temp-name", Fmake_temp_name, 1, 1, 0, /*
|
|
442
|
595 Generate a temporary file name starting with PREFIX.
|
|
428
|
596 The Emacs process number forms part of the result, so there is no
|
|
|
597 danger of generating a name being used by another process.
|
|
|
598
|
|
|
599 In addition, this function makes an attempt to choose a name that
|
|
|
600 does not specify an existing file. To make this work, PREFIX should
|
|
844
|
601 be an absolute file name. A reasonable idiom is
|
|
|
602
|
|
|
603 \(make-temp-name (expand-file-name "myprefix" (temp-directory)))
|
|
|
604
|
|
|
605 which puts the file in the OS-specified temporary directory.
|
|
428
|
606 */
|
|
|
607 (prefix))
|
|
|
608 {
|
|
442
|
609 static const char tbl[64] =
|
|
|
610 {
|
|
428
|
611 'A','B','C','D','E','F','G','H',
|
|
|
612 'I','J','K','L','M','N','O','P',
|
|
|
613 'Q','R','S','T','U','V','W','X',
|
|
|
614 'Y','Z','a','b','c','d','e','f',
|
|
|
615 'g','h','i','j','k','l','m','n',
|
|
|
616 'o','p','q','r','s','t','u','v',
|
|
|
617 'w','x','y','z','0','1','2','3',
|
|
442
|
618 '4','5','6','7','8','9','-','_'
|
|
|
619 };
|
|
428
|
620
|
|
|
621 Bytecount len;
|
|
867
|
622 Ibyte *p, *data;
|
|
844
|
623 Lisp_Object handler;
|
|
428
|
624
|
|
|
625 CHECK_STRING (prefix);
|
|
844
|
626 handler = Ffind_file_name_handler (prefix, Qmake_temp_name);
|
|
|
627 if (!NILP (handler))
|
|
|
628 return call2_check_string (handler, Qmake_temp_name, prefix);
|
|
428
|
629
|
|
|
630 /* I was tempted to apply Fexpand_file_name on PREFIX here, but it's
|
|
|
631 a bad idea because:
|
|
|
632
|
|
|
633 1) It might change the prefix, so the resulting string might not
|
|
|
634 begin with PREFIX. This violates the principle of least
|
|
|
635 surprise.
|
|
|
636
|
|
|
637 2) It breaks under many unforeseeable circumstances, such as with
|
|
|
638 the code that uses (make-temp-name "") instead of
|
|
|
639 (make-temp-name "./").
|
|
|
640
|
|
844
|
641 [[ 3) It might yield unexpected (to stat(2)) results in the presence
|
|
|
642 of EFS and file name handlers.]] Now that we check for a handler,
|
|
|
643 that's less of a concern. --ben */
|
|
428
|
644
|
|
|
645 len = XSTRING_LENGTH (prefix);
|
|
867
|
646 data = alloca_ibytes (len + 7);
|
|
428
|
647 memcpy (data, XSTRING_DATA (prefix), len);
|
|
|
648 p = data + len;
|
|
771
|
649 p[6] = '\0';
|
|
428
|
650
|
|
|
651 /* VAL is created by adding 6 characters to PREFIX. The first three
|
|
|
652 are the PID of this process, in base 64, and the second three are
|
|
442
|
653 a pseudo-random number seeded from process startup time. This
|
|
|
654 ensures 262144 unique file names per PID per PREFIX per machine. */
|
|
|
655
|
|
|
656 {
|
|
771
|
657 unsigned int pid = (unsigned int) qxe_getpid ();
|
|
442
|
658 *p++ = tbl[(pid >> 0) & 63];
|
|
|
659 *p++ = tbl[(pid >> 6) & 63];
|
|
|
660 *p++ = tbl[(pid >> 12) & 63];
|
|
|
661 }
|
|
428
|
662
|
|
|
663 /* Here we try to minimize useless stat'ing when this function is
|
|
|
664 invoked many times successively with the same PREFIX. We achieve
|
|
442
|
665 this by using a very pseudo-random number generator to generate
|
|
|
666 file names unique to this process, with a very long cycle. */
|
|
428
|
667
|
|
|
668 while (1)
|
|
|
669 {
|
|
|
670 struct stat ignored;
|
|
442
|
671
|
|
|
672 p[0] = tbl[(temp_name_rand >> 0) & 63];
|
|
|
673 p[1] = tbl[(temp_name_rand >> 6) & 63];
|
|
|
674 p[2] = tbl[(temp_name_rand >> 12) & 63];
|
|
428
|
675
|
|
|
676 /* Poor man's congruential RN generator. Replace with ++count
|
|
|
677 for debugging. */
|
|
442
|
678 temp_name_rand += 25229;
|
|
|
679 temp_name_rand %= 225307;
|
|
428
|
680
|
|
|
681 QUIT;
|
|
|
682
|
|
771
|
683 if (qxe_stat (data, &ignored) < 0)
|
|
428
|
684 {
|
|
|
685 /* We want to return only if errno is ENOENT. */
|
|
|
686 if (errno == ENOENT)
|
|
771
|
687 return make_string (data, len + 6);
|
|
428
|
688
|
|
|
689 /* The error here is dubious, but there is little else we
|
|
|
690 can do. The alternatives are to return nil, which is
|
|
|
691 as bad as (and in many cases worse than) throwing the
|
|
|
692 error, or to ignore the error, which will likely result
|
|
|
693 in inflooping. */
|
|
|
694 report_file_error ("Cannot create temporary name for prefix",
|
|
563
|
695 prefix);
|
|
428
|
696 return Qnil; /* not reached */
|
|
|
697 }
|
|
|
698 }
|
|
|
699 }
|
|
|
700
|
|
|
701
|
|
771
|
702
|
|
428
|
703 DEFUN ("expand-file-name", Fexpand_file_name, 1, 2, 0, /*
|
|
|
704 Convert filename NAME to absolute, and canonicalize it.
|
|
|
705 Second arg DEFAULT-DIRECTORY is directory to start with if NAME is relative
|
|
|
706 (does not start with slash); if DEFAULT-DIRECTORY is nil or missing,
|
|
444
|
707 the current buffer's value of `default-directory' is used.
|
|
428
|
708 File name components that are `.' are removed, and
|
|
|
709 so are file name components followed by `..', along with the `..' itself;
|
|
|
710 note that these simplifications are done without checking the resulting
|
|
|
711 file names in the file system.
|
|
|
712 An initial `~/' expands to your home directory.
|
|
|
713 An initial `~USER/' expands to USER's home directory.
|
|
|
714 See also the function `substitute-in-file-name'.
|
|
|
715 */
|
|
|
716 (name, default_directory))
|
|
|
717 {
|
|
771
|
718 /* This function can GC. GC-checked 2000-11-18.
|
|
|
719 This function synched with Emacs 21.0.103. */
|
|
867
|
720 Ibyte *nm;
|
|
|
721
|
|
|
722 Ibyte *newdir, *p, *o;
|
|
428
|
723 int tlen;
|
|
867
|
724 Ibyte *target;
|
|
657
|
725 #ifdef WIN32_FILENAMES
|
|
428
|
726 int drive = 0;
|
|
|
727 int collapse_newdir = 1;
|
|
771
|
728 /* XEmacs note: This concerns the special '/:' syntax for preventing
|
|
|
729 wildcards and such. We don't support this currently but I'm
|
|
|
730 keeping the code here in case we do. */
|
|
|
731 int is_escaped = 0;
|
|
657
|
732 #endif
|
|
|
733 #ifndef WIN32_NATIVE
|
|
428
|
734 struct passwd *pw;
|
|
771
|
735 #endif
|
|
428
|
736 int length;
|
|
446
|
737 Lisp_Object handler = Qnil;
|
|
|
738 struct gcpro gcpro1, gcpro2, gcpro3;
|
|
442
|
739
|
|
|
740 /* both of these get set below */
|
|
446
|
741 GCPRO3 (name, default_directory, handler);
|
|
428
|
742
|
|
|
743 CHECK_STRING (name);
|
|
|
744
|
|
|
745 /* If the file name has special constructs in it,
|
|
|
746 call the corresponding file handler. */
|
|
|
747 handler = Ffind_file_name_handler (name, Qexpand_file_name);
|
|
|
748 if (!NILP (handler))
|
|
446
|
749 RETURN_UNGCPRO (call3_check_string (handler, Qexpand_file_name,
|
|
|
750 name, default_directory));
|
|
428
|
751
|
|
|
752 /* Use the buffer's default-directory if DEFAULT_DIRECTORY is omitted. */
|
|
|
753 if (NILP (default_directory))
|
|
|
754 default_directory = current_buffer->directory;
|
|
|
755 if (! STRINGP (default_directory))
|
|
771
|
756 #ifdef WIN32_NATIVE
|
|
|
757 default_directory = build_string ("C:\\");
|
|
|
758 #else
|
|
428
|
759 default_directory = build_string ("/");
|
|
771
|
760 #endif
|
|
428
|
761
|
|
|
762 if (!NILP (default_directory))
|
|
|
763 {
|
|
|
764 handler = Ffind_file_name_handler (default_directory, Qexpand_file_name);
|
|
|
765 if (!NILP (handler))
|
|
446
|
766 RETURN_UNGCPRO (call3 (handler, Qexpand_file_name,
|
|
|
767 name, default_directory));
|
|
428
|
768 }
|
|
|
769
|
|
|
770 o = XSTRING_DATA (default_directory);
|
|
|
771
|
|
|
772 /* Make sure DEFAULT_DIRECTORY is properly expanded.
|
|
|
773 It would be better to do this down below where we actually use
|
|
|
774 default_directory. Unfortunately, calling Fexpand_file_name recursively
|
|
|
775 could invoke GC, and the strings might be relocated. This would
|
|
|
776 be annoying because we have pointers into strings lying around
|
|
|
777 that would need adjusting, and people would add new pointers to
|
|
|
778 the code and forget to adjust them, resulting in intermittent bugs.
|
|
|
779 Putting this call here avoids all that crud.
|
|
|
780
|
|
|
781 The EQ test avoids infinite recursion. */
|
|
|
782 if (! NILP (default_directory) && !EQ (default_directory, name)
|
|
|
783 /* Save time in some common cases - as long as default_directory
|
|
|
784 is not relative, it can be canonicalized with name below (if it
|
|
|
785 is needed at all) without requiring it to be expanded now. */
|
|
657
|
786 #ifdef WIN32_FILENAMES
|
|
442
|
787 /* Detect Windows file names with drive specifiers. */
|
|
428
|
788 && ! (IS_DRIVE (o[0]) && (IS_DEVICE_SEP (o[1]) && IS_DIRECTORY_SEP (o[2])))
|
|
|
789 /* Detect Windows file names in UNC format. */
|
|
|
790 && ! (IS_DIRECTORY_SEP (o[0]) && IS_DIRECTORY_SEP (o[1]))
|
|
657
|
791 #endif /* not WIN32_FILENAMES */
|
|
|
792 #ifndef WIN32_NATIVE
|
|
428
|
793 /* Detect Unix absolute file names (/... alone is not absolute on
|
|
442
|
794 Windows). */
|
|
428
|
795 && ! (IS_DIRECTORY_SEP (o[0]))
|
|
442
|
796 #endif /* not WIN32_NATIVE */
|
|
428
|
797 )
|
|
442
|
798
|
|
|
799 default_directory = Fexpand_file_name (default_directory, Qnil);
|
|
428
|
800
|
|
|
801 #ifdef FILE_SYSTEM_CASE
|
|
|
802 name = FILE_SYSTEM_CASE (name);
|
|
|
803 #endif
|
|
|
804
|
|
|
805 /* #### dmoore - this is ugly, clean this up. Looks like nm pointing
|
|
|
806 into name should be safe during all of this, though. */
|
|
|
807 nm = XSTRING_DATA (name);
|
|
|
808
|
|
657
|
809 #ifdef WIN32_FILENAMES
|
|
428
|
810 /* We will force directory separators to be either all \ or /, so make
|
|
|
811 a local copy to modify, even if there ends up being no change. */
|
|
867
|
812 nm = qxestrcpy (alloca_ibytes (qxestrlen (nm) + 1), nm);
|
|
771
|
813
|
|
|
814 /* Note if special escape prefix is present, but remove for now. */
|
|
|
815 if (nm[0] == '/' && nm[1] == ':')
|
|
|
816 {
|
|
|
817 is_escaped = 1;
|
|
|
818 nm += 2;
|
|
|
819 }
|
|
428
|
820
|
|
|
821 /* Find and remove drive specifier if present; this makes nm absolute
|
|
|
822 even if the rest of the name appears to be relative. */
|
|
|
823 {
|
|
867
|
824 Ibyte *colon = qxestrrchr (nm, ':');
|
|
428
|
825
|
|
|
826 if (colon)
|
|
657
|
827 {
|
|
428
|
828 /* Only recognize colon as part of drive specifier if there is a
|
|
|
829 single alphabetic character preceding the colon (and if the
|
|
|
830 character before the drive letter, if present, is a directory
|
|
|
831 separator); this is to support the remote system syntax used by
|
|
|
832 ange-ftp, and the "po:username" syntax for POP mailboxes. */
|
|
|
833 look_again:
|
|
|
834 if (nm == colon)
|
|
|
835 nm++;
|
|
|
836 else if (IS_DRIVE (colon[-1])
|
|
|
837 && (colon == nm + 1 || IS_DIRECTORY_SEP (colon[-2])))
|
|
|
838 {
|
|
|
839 drive = colon[-1];
|
|
|
840 nm = colon + 1;
|
|
|
841 }
|
|
|
842 else
|
|
|
843 {
|
|
|
844 while (--colon >= nm)
|
|
|
845 if (colon[0] == ':')
|
|
|
846 goto look_again;
|
|
|
847 }
|
|
657
|
848 }
|
|
428
|
849 }
|
|
|
850
|
|
|
851 /* If we see "c://somedir", we want to strip the first slash after the
|
|
|
852 colon when stripping the drive letter. Otherwise, this expands to
|
|
|
853 "//somedir". */
|
|
|
854 if (drive && IS_DIRECTORY_SEP (nm[0]) && IS_DIRECTORY_SEP (nm[1]))
|
|
|
855 nm++;
|
|
657
|
856 #endif /* WIN32_FILENAMES */
|
|
428
|
857
|
|
771
|
858 #ifdef WIN32_FILENAMES
|
|
|
859 /* Discard any previous drive specifier if nm is now in UNC format. */
|
|
|
860 if (IS_DIRECTORY_SEP (nm[0]) && IS_DIRECTORY_SEP (nm[1]))
|
|
|
861 {
|
|
|
862 drive = 0;
|
|
|
863 }
|
|
|
864 #endif
|
|
|
865
|
|
428
|
866 /* If nm is absolute, look for /./ or /../ sequences; if none are
|
|
|
867 found, we can probably return right away. We will avoid allocating
|
|
|
868 a new string if name is already fully expanded. */
|
|
|
869 if (
|
|
|
870 IS_DIRECTORY_SEP (nm[0])
|
|
442
|
871 #ifdef WIN32_NATIVE
|
|
771
|
872 && (drive || IS_DIRECTORY_SEP (nm[1])) && !is_escaped
|
|
428
|
873 #endif
|
|
|
874 )
|
|
|
875 {
|
|
|
876 /* If it turns out that the filename we want to return is just a
|
|
|
877 suffix of FILENAME, we don't need to go through and edit
|
|
|
878 things; we just need to construct a new string using data
|
|
|
879 starting at the middle of FILENAME. If we set lose to a
|
|
|
880 non-zero value, that means we've discovered that we can't do
|
|
|
881 that cool trick. */
|
|
|
882 int lose = 0;
|
|
|
883
|
|
|
884 p = nm;
|
|
|
885 while (*p)
|
|
|
886 {
|
|
|
887 /* Since we know the name is absolute, we can assume that each
|
|
|
888 element starts with a "/". */
|
|
|
889
|
|
|
890 /* "." and ".." are hairy. */
|
|
|
891 if (IS_DIRECTORY_SEP (p[0])
|
|
|
892 && p[1] == '.'
|
|
|
893 && (IS_DIRECTORY_SEP (p[2])
|
|
|
894 || p[2] == 0
|
|
|
895 || (p[2] == '.' && (IS_DIRECTORY_SEP (p[3])
|
|
|
896 || p[3] == 0))))
|
|
|
897 lose = 1;
|
|
771
|
898 /* We want to replace multiple `/' in a row with a single
|
|
|
899 slash. */
|
|
|
900 else if (p > nm
|
|
|
901 && IS_DIRECTORY_SEP (p[0])
|
|
|
902 && IS_DIRECTORY_SEP (p[1]))
|
|
|
903 lose = 1;
|
|
428
|
904 p++;
|
|
|
905 }
|
|
|
906 if (!lose)
|
|
|
907 {
|
|
657
|
908 #ifdef WIN32_FILENAMES
|
|
|
909 if (drive || IS_DIRECTORY_SEP (nm[1]))
|
|
428
|
910 {
|
|
867
|
911 Ibyte *newnm;
|
|
771
|
912
|
|
657
|
913 if (IS_DIRECTORY_SEP (nm[1]))
|
|
|
914 {
|
|
771
|
915 newnm = mswindows_canonicalize_filename (nm);
|
|
|
916 if (qxestrcmp (newnm, XSTRING_DATA (name)) != 0)
|
|
|
917 name = build_intstring (newnm);
|
|
657
|
918 }
|
|
771
|
919 else
|
|
657
|
920 {
|
|
771
|
921 /* drive must be set, so this is okay */
|
|
|
922 newnm = mswindows_canonicalize_filename (nm - 2);
|
|
|
923 if (qxestrcmp (newnm, XSTRING_DATA (name)) != 0)
|
|
|
924 {
|
|
|
925 name = build_intstring (newnm);
|
|
|
926 XSTRING_DATA (name)[0] = DRIVE_LETTER (drive);
|
|
|
927 XSTRING_DATA (name)[1] = ':';
|
|
|
928 }
|
|
657
|
929 }
|
|
771
|
930 xfree (newnm);
|
|
657
|
931 RETURN_UNGCPRO (name);
|
|
428
|
932 }
|
|
771
|
933 #endif /* WIN32_FILENAMES */
|
|
657
|
934 #ifndef WIN32_NATIVE
|
|
428
|
935 if (nm == XSTRING_DATA (name))
|
|
442
|
936 RETURN_UNGCPRO (name);
|
|
771
|
937 RETURN_UNGCPRO (build_intstring (nm));
|
|
442
|
938 #endif /* not WIN32_NATIVE */
|
|
428
|
939 }
|
|
|
940 }
|
|
|
941
|
|
|
942 /* At this point, nm might or might not be an absolute file name. We
|
|
|
943 need to expand ~ or ~user if present, otherwise prefix nm with
|
|
|
944 default_directory if nm is not absolute, and finally collapse /./
|
|
|
945 and /foo/../ sequences.
|
|
|
946
|
|
|
947 We set newdir to be the appropriate prefix if one is needed:
|
|
|
948 - the relevant user directory if nm starts with ~ or ~user
|
|
|
949 - the specified drive's working dir (DOS/NT only) if nm does not
|
|
|
950 start with /
|
|
|
951 - the value of default_directory.
|
|
|
952
|
|
|
953 Note that these prefixes are not guaranteed to be absolute (except
|
|
|
954 for the working dir of a drive). Therefore, to ensure we always
|
|
|
955 return an absolute name, if the final prefix is not absolute we
|
|
|
956 append it to the current working directory. */
|
|
|
957
|
|
|
958 newdir = 0;
|
|
|
959
|
|
|
960 if (nm[0] == '~') /* prefix ~ */
|
|
|
961 {
|
|
|
962 if (IS_DIRECTORY_SEP (nm[1])
|
|
|
963 || nm[1] == 0) /* ~ by itself */
|
|
|
964 {
|
|
867
|
965 Ibyte *homedir = get_home_directory ();
|
|
771
|
966
|
|
|
967 if (!homedir)
|
|
867
|
968 newdir = (Ibyte *) "";
|
|
428
|
969 else
|
|
771
|
970 newdir = homedir;
|
|
428
|
971
|
|
|
972 nm++;
|
|
657
|
973 #ifdef WIN32_FILENAMES
|
|
428
|
974 collapse_newdir = 0;
|
|
|
975 #endif
|
|
|
976 }
|
|
|
977 else /* ~user/filename */
|
|
|
978 {
|
|
|
979 for (p = nm; *p && (!IS_DIRECTORY_SEP (*p)); p++)
|
|
|
980 DO_NOTHING;
|
|
867
|
981 o = (Ibyte *) ALLOCA (p - nm + 1);
|
|
771
|
982 memcpy (o, nm, p - nm);
|
|
428
|
983 o [p - nm] = 0;
|
|
|
984
|
|
558
|
985 /* #### While NT is single-user (for the moment) you still
|
|
|
986 can have multiple user profiles users defined, each with
|
|
|
987 its HOME. So maybe possibly we should think about handling
|
|
|
988 ~user. --ben */
|
|
|
989 #ifndef WIN32_NATIVE
|
|
442
|
990 #ifdef CYGWIN
|
|
771
|
991 {
|
|
867
|
992 Ibyte *user;
|
|
771
|
993
|
|
|
994 if ((user = user_login_name (NULL)) != NULL)
|
|
|
995 {
|
|
|
996 /* Does the user login name match the ~name? */
|
|
|
997 if (qxestrcmp (user, o + 1) == 0)
|
|
|
998 {
|
|
|
999 newdir = get_home_directory ();
|
|
|
1000 nm = p;
|
|
|
1001 }
|
|
|
1002 }
|
|
|
1003 }
|
|
|
1004 if (!newdir)
|
|
428
|
1005 {
|
|
442
|
1006 #endif /* CYGWIN */
|
|
428
|
1007 /* Jamie reports that getpwnam() can get wedged by SIGIO/SIGALARM
|
|
|
1008 occurring in it. (It can call select()). */
|
|
|
1009 slow_down_interrupts ();
|
|
771
|
1010 pw = (struct passwd *) qxe_getpwnam (o + 1);
|
|
428
|
1011 speed_up_interrupts ();
|
|
|
1012 if (pw)
|
|
|
1013 {
|
|
867
|
1014 newdir = (Ibyte *) pw->pw_dir;
|
|
428
|
1015 nm = p;
|
|
771
|
1016 /* FSF: if WIN32_NATIVE, collapse_newdir = 0;
|
|
|
1017 not possible here. */
|
|
428
|
1018 }
|
|
442
|
1019 #ifdef CYGWIN
|
|
428
|
1020 }
|
|
|
1021 #endif
|
|
442
|
1022 #endif /* not WIN32_NATIVE */
|
|
428
|
1023
|
|
|
1024 /* If we don't find a user of that name, leave the name
|
|
|
1025 unchanged; don't move nm forward to p. */
|
|
|
1026 }
|
|
|
1027 }
|
|
|
1028
|
|
657
|
1029 #ifdef WIN32_FILENAMES
|
|
428
|
1030 /* On DOS and Windows, nm is absolute if a drive name was specified;
|
|
|
1031 use the drive's current directory as the prefix if needed. */
|
|
|
1032 if (!newdir && drive)
|
|
|
1033 {
|
|
657
|
1034 #ifdef WIN32_NATIVE
|
|
428
|
1035 /* Get default directory if needed to make nm absolute. */
|
|
|
1036 if (!IS_DIRECTORY_SEP (nm[0]))
|
|
|
1037 {
|
|
867
|
1038 Ibyte *newcwd = mswindows_getdcwd (toupper (drive) - 'A' + 1);
|
|
771
|
1039 if (newcwd)
|
|
|
1040 {
|
|
867
|
1041 IBYTE_STRING_TO_ALLOCA (newcwd, newdir);
|
|
771
|
1042 xfree (newcwd);
|
|
|
1043 }
|
|
|
1044 else
|
|
428
|
1045 newdir = NULL;
|
|
|
1046 }
|
|
657
|
1047 #endif /* WIN32_NATIVE */
|
|
428
|
1048 if (!newdir)
|
|
|
1049 {
|
|
|
1050 /* Either nm starts with /, or drive isn't mounted. */
|
|
867
|
1051 newdir = (Ibyte *) ALLOCA (4);
|
|
428
|
1052 newdir[0] = DRIVE_LETTER (drive);
|
|
|
1053 newdir[1] = ':';
|
|
|
1054 newdir[2] = '/';
|
|
|
1055 newdir[3] = 0;
|
|
|
1056 }
|
|
|
1057 }
|
|
657
|
1058 #endif /* WIN32_FILENAMES */
|
|
428
|
1059
|
|
|
1060 /* Finally, if no prefix has been specified and nm is not absolute,
|
|
|
1061 then it must be expanded relative to default_directory. */
|
|
|
1062
|
|
|
1063 if (1
|
|
442
|
1064 #ifndef WIN32_NATIVE
|
|
428
|
1065 /* /... alone is not absolute on DOS and Windows. */
|
|
|
1066 && !IS_DIRECTORY_SEP (nm[0])
|
|
657
|
1067 #endif
|
|
|
1068 #ifdef WIN32_FILENAMES
|
|
428
|
1069 && !(IS_DIRECTORY_SEP (nm[0]) && IS_DIRECTORY_SEP (nm[1]))
|
|
|
1070 #endif
|
|
|
1071 && !newdir)
|
|
|
1072 {
|
|
|
1073 newdir = XSTRING_DATA (default_directory);
|
|
771
|
1074 #ifdef WIN32_FILENAMES
|
|
|
1075 /* Note if special escape prefix is present, but remove for now. */
|
|
|
1076 if (newdir[0] == '/' && newdir[1] == ':')
|
|
|
1077 {
|
|
|
1078 is_escaped = 1;
|
|
|
1079 newdir += 2;
|
|
|
1080 }
|
|
|
1081 #endif
|
|
428
|
1082 }
|
|
|
1083
|
|
657
|
1084 #ifdef WIN32_FILENAMES
|
|
428
|
1085 if (newdir)
|
|
|
1086 {
|
|
|
1087 /* First ensure newdir is an absolute name. */
|
|
|
1088 if (
|
|
442
|
1089 /* Detect Windows file names with drive specifiers. */
|
|
428
|
1090 ! (IS_DRIVE (newdir[0])
|
|
|
1091 && IS_DEVICE_SEP (newdir[1]) && IS_DIRECTORY_SEP (newdir[2]))
|
|
|
1092 /* Detect Windows file names in UNC format. */
|
|
|
1093 && ! (IS_DIRECTORY_SEP (newdir[0]) && IS_DIRECTORY_SEP (newdir[1]))
|
|
771
|
1094 /* XEmacs: added these two lines: Detect drive spec by itself */
|
|
428
|
1095 && ! (IS_DEVICE_SEP (newdir[1]) && newdir[2] == 0)
|
|
657
|
1096 /* Detect unix format. */
|
|
|
1097 #ifndef WIN32_NATIVE
|
|
|
1098 && ! (IS_DIRECTORY_SEP (newdir[0]))
|
|
|
1099 #endif
|
|
428
|
1100 )
|
|
|
1101 {
|
|
|
1102 /* Effectively, let newdir be (expand-file-name newdir cwd).
|
|
|
1103 Because of the admonition against calling expand-file-name
|
|
|
1104 when we have pointers into lisp strings, we accomplish this
|
|
|
1105 indirectly by prepending newdir to nm if necessary, and using
|
|
|
1106 cwd (or the wd of newdir's drive) as the new newdir. */
|
|
|
1107
|
|
|
1108 if (IS_DRIVE (newdir[0]) && newdir[1] == ':')
|
|
|
1109 {
|
|
|
1110 drive = newdir[0];
|
|
|
1111 newdir += 2;
|
|
|
1112 }
|
|
|
1113 if (!IS_DIRECTORY_SEP (nm[0]))
|
|
|
1114 {
|
|
867
|
1115 Ibyte *tmp = (Ibyte *) ALLOCA (qxestrlen (newdir) +
|
|
771
|
1116 qxestrlen (nm) + 2);
|
|
|
1117 file_name_as_directory (tmp, newdir);
|
|
|
1118 qxestrcat (tmp, nm);
|
|
428
|
1119 nm = tmp;
|
|
|
1120 }
|
|
|
1121 if (drive)
|
|
|
1122 {
|
|
657
|
1123 #ifdef WIN32_NATIVE
|
|
867
|
1124 Ibyte *newcwd = mswindows_getdcwd (toupper (drive) - 'A' + 1);
|
|
771
|
1125 if (newcwd)
|
|
|
1126 {
|
|
867
|
1127 IBYTE_STRING_TO_ALLOCA (newcwd, newdir);
|
|
771
|
1128 xfree (newcwd);
|
|
|
1129 }
|
|
|
1130 else
|
|
657
|
1131 #endif
|
|
867
|
1132 IBYTE_STRING_TO_ALLOCA ((Ibyte *) "/", newdir);
|
|
428
|
1133 }
|
|
|
1134 else
|
|
867
|
1135 IBYTE_STRING_TO_ALLOCA (get_initial_directory (0, 0), newdir);
|
|
428
|
1136 }
|
|
|
1137
|
|
|
1138 /* Strip off drive name from prefix, if present. */
|
|
|
1139 if (IS_DRIVE (newdir[0]) && newdir[1] == ':')
|
|
|
1140 {
|
|
|
1141 drive = newdir[0];
|
|
|
1142 newdir += 2;
|
|
|
1143 }
|
|
|
1144
|
|
|
1145 /* Keep only a prefix from newdir if nm starts with slash
|
|
771
|
1146 (//server/share for UNC, nothing otherwise). */
|
|
657
|
1147 if (IS_DIRECTORY_SEP (nm[0])
|
|
|
1148 #ifndef WIN32_NATIVE
|
|
|
1149 && IS_DIRECTORY_SEP (nm[1])
|
|
|
1150 #endif
|
|
|
1151 && collapse_newdir)
|
|
428
|
1152 {
|
|
|
1153 if (IS_DIRECTORY_SEP (newdir[0]) && IS_DIRECTORY_SEP (newdir[1]))
|
|
|
1154 {
|
|
664
|
1155 newdir =
|
|
867
|
1156 (Ibyte *)
|
|
|
1157 qxestrcpy ((Ibyte *) ALLOCA (qxestrlen (newdir) + 1),
|
|
771
|
1158 newdir);
|
|
428
|
1159 p = newdir + 2;
|
|
|
1160 while (*p && !IS_DIRECTORY_SEP (*p)) p++;
|
|
|
1161 p++;
|
|
|
1162 while (*p && !IS_DIRECTORY_SEP (*p)) p++;
|
|
|
1163 *p = 0;
|
|
|
1164 }
|
|
|
1165 else
|
|
867
|
1166 newdir = (Ibyte *) "";
|
|
428
|
1167 }
|
|
|
1168 }
|
|
657
|
1169 #endif /* WIN32_FILENAMES */
|
|
428
|
1170
|
|
|
1171 if (newdir)
|
|
|
1172 {
|
|
|
1173 /* Get rid of any slash at the end of newdir, unless newdir is
|
|
771
|
1174 just / or // (an incomplete UNC name). */
|
|
|
1175 length = qxestrlen (newdir);
|
|
428
|
1176 if (length > 1 && IS_DIRECTORY_SEP (newdir[length - 1])
|
|
657
|
1177 #ifdef WIN32_FILENAMES
|
|
428
|
1178 && !(length == 2 && IS_DIRECTORY_SEP (newdir[0]))
|
|
|
1179 #endif
|
|
|
1180 )
|
|
|
1181 {
|
|
867
|
1182 Ibyte *temp = (Ibyte *) ALLOCA (length);
|
|
428
|
1183 memcpy (temp, newdir, length - 1);
|
|
|
1184 temp[length - 1] = 0;
|
|
|
1185 newdir = temp;
|
|
|
1186 }
|
|
|
1187 tlen = length + 1;
|
|
|
1188 }
|
|
|
1189 else
|
|
|
1190 tlen = 0;
|
|
|
1191
|
|
|
1192 /* Now concatenate the directory and name to new space in the stack frame */
|
|
771
|
1193 tlen += qxestrlen (nm) + 1;
|
|
657
|
1194 #ifdef WIN32_FILENAMES
|
|
771
|
1195 /* Reserve space for drive specifier and escape prefix, since either
|
|
|
1196 or both may need to be inserted. (The Microsoft x86 compiler
|
|
428
|
1197 produces incorrect code if the following two lines are combined.) */
|
|
867
|
1198 target = (Ibyte *) ALLOCA (tlen + 4);
|
|
771
|
1199 target += 4;
|
|
657
|
1200 #else /* not WIN32_FILENAMES */
|
|
867
|
1201 target = (Ibyte *) ALLOCA (tlen);
|
|
657
|
1202 #endif /* not WIN32_FILENAMES */
|
|
428
|
1203 *target = 0;
|
|
|
1204
|
|
|
1205 if (newdir)
|
|
|
1206 {
|
|
|
1207 if (nm[0] == 0 || IS_DIRECTORY_SEP (nm[0]))
|
|
771
|
1208 {
|
|
|
1209 #ifdef WIN32_FILENAMES
|
|
|
1210 /* If newdir is effectively "C:/", then the drive letter will have
|
|
|
1211 been stripped and newdir will be "/". Concatenating with an
|
|
|
1212 absolute directory in nm produces "//", which will then be
|
|
|
1213 incorrectly treated as a network share. Ignore newdir in
|
|
|
1214 this case (keeping the drive letter). */
|
|
|
1215 if (!(drive && nm[0] && IS_DIRECTORY_SEP (newdir[0])
|
|
|
1216 && newdir[1] == '\0'))
|
|
|
1217 #endif
|
|
|
1218 qxestrcpy (target, newdir);
|
|
|
1219 }
|
|
428
|
1220 else
|
|
771
|
1221 file_name_as_directory (target, newdir);
|
|
428
|
1222 }
|
|
|
1223
|
|
771
|
1224 qxestrcat (target, nm);
|
|
428
|
1225
|
|
|
1226 /* ASSERT (IS_DIRECTORY_SEP (target[0])) if not VMS */
|
|
|
1227
|
|
771
|
1228 /* Now canonicalize by removing `//', `/.' and `/foo/..' if they
|
|
|
1229 appear. */
|
|
428
|
1230
|
|
|
1231 p = target;
|
|
|
1232 o = target;
|
|
|
1233
|
|
|
1234 while (*p)
|
|
|
1235 {
|
|
|
1236 if (!IS_DIRECTORY_SEP (*p))
|
|
|
1237 {
|
|
|
1238 *o++ = *p++;
|
|
|
1239 }
|
|
|
1240 else if (IS_DIRECTORY_SEP (p[0])
|
|
|
1241 && p[1] == '.'
|
|
|
1242 && (IS_DIRECTORY_SEP (p[2])
|
|
|
1243 || p[2] == 0))
|
|
|
1244 {
|
|
|
1245 /* If "/." is the entire filename, keep the "/". Otherwise,
|
|
|
1246 just delete the whole "/.". */
|
|
|
1247 if (o == target && p[2] == '\0')
|
|
|
1248 *o++ = *p;
|
|
|
1249 p += 2;
|
|
|
1250 }
|
|
|
1251 else if (IS_DIRECTORY_SEP (p[0]) && p[1] == '.' && p[2] == '.'
|
|
|
1252 /* `/../' is the "superroot" on certain file systems. */
|
|
|
1253 && o != target
|
|
|
1254 && (IS_DIRECTORY_SEP (p[3]) || p[3] == 0))
|
|
|
1255 {
|
|
|
1256 while (o != target && (--o) && !IS_DIRECTORY_SEP (*o))
|
|
|
1257 ;
|
|
|
1258 /* Keep initial / only if this is the whole name. */
|
|
|
1259 if (o == target && IS_ANY_SEP (*o) && p[3] == 0)
|
|
|
1260 ++o;
|
|
|
1261 p += 3;
|
|
|
1262 }
|
|
771
|
1263 else if (p > target
|
|
|
1264 && IS_DIRECTORY_SEP (p[0]) && IS_DIRECTORY_SEP (p[1]))
|
|
|
1265 {
|
|
|
1266 /* Collapse multiple `/' in a row. */
|
|
|
1267 *o++ = *p++;
|
|
|
1268 while (IS_DIRECTORY_SEP (*p))
|
|
|
1269 ++p;
|
|
|
1270 }
|
|
428
|
1271 else
|
|
|
1272 {
|
|
|
1273 *o++ = *p++;
|
|
|
1274 }
|
|
|
1275 }
|
|
|
1276
|
|
657
|
1277 #ifdef WIN32_FILENAMES
|
|
428
|
1278 /* At last, set drive name, except for network file name. */
|
|
|
1279 if (drive)
|
|
|
1280 {
|
|
|
1281 target -= 2;
|
|
|
1282 target[0] = DRIVE_LETTER (drive);
|
|
|
1283 target[1] = ':';
|
|
|
1284 }
|
|
657
|
1285 #ifdef WIN32_NATIVE
|
|
428
|
1286 else
|
|
|
1287 {
|
|
|
1288 assert (IS_DIRECTORY_SEP (target[0]) && IS_DIRECTORY_SEP (target[1]));
|
|
|
1289 }
|
|
657
|
1290 #endif
|
|
771
|
1291 /* Reinsert the escape prefix if required. */
|
|
|
1292 if (is_escaped)
|
|
|
1293 {
|
|
|
1294 target -= 2;
|
|
|
1295 target[0] = '/';
|
|
|
1296 target[1] = ':';
|
|
|
1297 }
|
|
|
1298
|
|
|
1299 *o = '\0';
|
|
|
1300
|
|
|
1301 {
|
|
867
|
1302 Ibyte *newtarget = mswindows_canonicalize_filename (target);
|
|
771
|
1303 Lisp_Object result = build_intstring (newtarget);
|
|
|
1304 xfree (newtarget);
|
|
|
1305
|
|
|
1306 RETURN_UNGCPRO (result);
|
|
|
1307 }
|
|
|
1308 #else /* not WIN32_FILENAMES */
|
|
442
|
1309 RETURN_UNGCPRO (make_string (target, o - target));
|
|
771
|
1310 #endif /* not WIN32_FILENAMES */
|
|
428
|
1311 }
|
|
|
1312
|
|
|
1313 DEFUN ("file-truename", Ffile_truename, 1, 2, 0, /*
|
|
444
|
1314 Return the canonical name of FILENAME.
|
|
|
1315 Second arg DEFAULT is directory to start with if FILENAME is relative
|
|
428
|
1316 (does not start with slash); if DEFAULT is nil or missing,
|
|
444
|
1317 the current buffer's value of `default-directory' is used.
|
|
428
|
1318 No component of the resulting pathname will be a symbolic link, as
|
|
|
1319 in the realpath() function.
|
|
|
1320 */
|
|
|
1321 (filename, default_))
|
|
|
1322 {
|
|
442
|
1323 /* This function can GC. GC checked 2000-07-28 ben. */
|
|
428
|
1324 Lisp_Object expanded_name;
|
|
|
1325 struct gcpro gcpro1;
|
|
|
1326
|
|
|
1327 CHECK_STRING (filename);
|
|
|
1328
|
|
|
1329 expanded_name = Fexpand_file_name (filename, default_);
|
|
|
1330
|
|
|
1331 if (!STRINGP (expanded_name))
|
|
|
1332 return Qnil;
|
|
|
1333
|
|
|
1334 GCPRO1 (expanded_name);
|
|
442
|
1335
|
|
|
1336 {
|
|
|
1337 Lisp_Object handler =
|
|
|
1338 Ffind_file_name_handler (expanded_name, Qfile_truename);
|
|
|
1339
|
|
|
1340 if (!NILP (handler))
|
|
|
1341 RETURN_UNGCPRO
|
|
|
1342 (call2_check_string (handler, Qfile_truename, expanded_name));
|
|
|
1343 }
|
|
428
|
1344
|
|
|
1345 {
|
|
867
|
1346 Ibyte resolved_path[PATH_MAX];
|
|
771
|
1347 Bytecount elen = XSTRING_LENGTH (expanded_name);
|
|
867
|
1348 Ibyte *path;
|
|
|
1349 Ibyte *p;
|
|
771
|
1350
|
|
|
1351 LISP_STRING_TO_ALLOCA (expanded_name, path);
|
|
988
|
1352
|
|
|
1353 #if defined(WIN32_FILENAMES) && defined(CYGWIN)
|
|
|
1354 /* When using win32 filenames in cygwin we want file-truename to
|
|
|
1355 detect that c:/windows == /windows for example. */
|
|
|
1356 if ((IS_DIRECTORY_SEP (path[0])
|
|
|
1357 && (elen == 1 || !IS_DIRECTORY_SEP (path[1])))
|
|
|
1358 || (isalpha (path[0])
|
|
|
1359 && (elen == 1 || !IS_DEVICE_SEP (path[1])))) {
|
|
|
1360 int ltwff2 =
|
|
|
1361 cygwin_posix_to_win32_path_list_buf_size (path);
|
|
|
1362 p = (Ibyte *) alloca (ltwff2);
|
|
|
1363 cygwin_posix_to_win32_path_list (path, p);
|
|
|
1364 path = p;
|
|
|
1365 }
|
|
|
1366 #endif
|
|
428
|
1367 p = path;
|
|
442
|
1368
|
|
428
|
1369 /* Try doing it all at once. */
|
|
771
|
1370 if (!qxe_realpath (path, resolved_path))
|
|
428
|
1371 {
|
|
|
1372 /* Didn't resolve it -- have to do it one component at a time. */
|
|
|
1373 /* "realpath" is a typically useless, stupid un*x piece of crap.
|
|
|
1374 It claims to return a useful value in the "error" case, but since
|
|
|
1375 there is no indication provided of how far along the pathname
|
|
|
1376 the function went before erring, there is no way to use the
|
|
442
|
1377 partial result returned. What a piece of junk.
|
|
|
1378
|
|
|
1379 The above comment refers to historical versions of
|
|
|
1380 realpath(). The Unix98 specs state:
|
|
|
1381
|
|
|
1382 "On successful completion, realpath() returns a
|
|
|
1383 pointer to the resolved name. Otherwise, realpath()
|
|
|
1384 returns a null pointer and sets errno to indicate the
|
|
|
1385 error, and the contents of the buffer pointed to by
|
|
|
1386 resolved_name are undefined."
|
|
|
1387
|
|
771
|
1388 Since we depend on undocumented semantics of various system
|
|
|
1389 realpath()s, we just use our own version in realpath.c. */
|
|
428
|
1390 for (;;)
|
|
|
1391 {
|
|
867
|
1392 Ibyte *pos;
|
|
446
|
1393
|
|
657
|
1394 #ifdef WIN32_FILENAMES
|
|
446
|
1395 if (IS_DRIVE (p[0]) && IS_DEVICE_SEP (p[1])
|
|
|
1396 && IS_DIRECTORY_SEP (p[2]))
|
|
|
1397 /* don't test c: on windows */
|
|
|
1398 p = p+2;
|
|
|
1399 else if (IS_DIRECTORY_SEP (p[0]) && IS_DIRECTORY_SEP (p[1]))
|
|
|
1400 /* start after // */
|
|
|
1401 p = p+1;
|
|
|
1402 #endif
|
|
|
1403 for (pos = p + 1; pos < path + elen; pos++)
|
|
|
1404 if (IS_DIRECTORY_SEP (*pos))
|
|
|
1405 {
|
|
|
1406 *(p = pos) = 0;
|
|
|
1407 break;
|
|
|
1408 }
|
|
|
1409 if (p != pos)
|
|
|
1410 p = 0;
|
|
428
|
1411
|
|
771
|
1412 if (qxe_realpath (path, resolved_path))
|
|
428
|
1413 {
|
|
|
1414 if (p)
|
|
446
|
1415 *p = DIRECTORY_SEP;
|
|
428
|
1416 else
|
|
|
1417 break;
|
|
|
1418
|
|
|
1419 }
|
|
|
1420 else if (errno == ENOENT || errno == EACCES)
|
|
|
1421 {
|
|
|
1422 /* Failed on this component. Just tack on the rest of
|
|
|
1423 the string and we are done. */
|
|
771
|
1424 int rlen = qxestrlen (resolved_path);
|
|
428
|
1425
|
|
|
1426 /* "On failure, it returns NULL, sets errno to indicate
|
|
|
1427 the error, and places in resolved_path the absolute pathname
|
|
|
1428 of the path component which could not be resolved." */
|
|
442
|
1429
|
|
|
1430 if (p)
|
|
428
|
1431 {
|
|
|
1432 int plen = elen - (p - path);
|
|
|
1433
|
|
446
|
1434 if (rlen > 1 && IS_DIRECTORY_SEP (resolved_path[rlen - 1]))
|
|
428
|
1435 rlen = rlen - 1;
|
|
|
1436
|
|
|
1437 if (plen + rlen + 1 > countof (resolved_path))
|
|
|
1438 goto toolong;
|
|
|
1439
|
|
446
|
1440 resolved_path[rlen] = DIRECTORY_SEP;
|
|
428
|
1441 memcpy (resolved_path + rlen + 1, p + 1, plen + 1 - 1);
|
|
|
1442 }
|
|
|
1443 break;
|
|
|
1444 }
|
|
|
1445 else
|
|
|
1446 goto lose;
|
|
|
1447 }
|
|
|
1448 }
|
|
|
1449
|
|
|
1450 {
|
|
442
|
1451 Lisp_Object resolved_name;
|
|
771
|
1452 int rlen = qxestrlen (resolved_path);
|
|
826
|
1453 if (elen > 0 && IS_DIRECTORY_SEP (string_byte (expanded_name, elen - 1))
|
|
446
|
1454 && !(rlen > 0 && IS_DIRECTORY_SEP (resolved_path[rlen - 1])))
|
|
428
|
1455 {
|
|
|
1456 if (rlen + 1 > countof (resolved_path))
|
|
|
1457 goto toolong;
|
|
446
|
1458 resolved_path[rlen++] = DIRECTORY_SEP;
|
|
442
|
1459 resolved_path[rlen] = '\0';
|
|
428
|
1460 }
|
|
771
|
1461 resolved_name = make_string (resolved_path, rlen);
|
|
442
|
1462 RETURN_UNGCPRO (resolved_name);
|
|
428
|
1463 }
|
|
|
1464
|
|
|
1465 toolong:
|
|
|
1466 errno = ENAMETOOLONG;
|
|
|
1467 goto lose;
|
|
|
1468 lose:
|
|
563
|
1469 report_file_error ("Finding truename", expanded_name);
|
|
428
|
1470 }
|
|
442
|
1471 RETURN_UNGCPRO (Qnil);
|
|
428
|
1472 }
|
|
|
1473
|
|
|
1474
|
|
|
1475 DEFUN ("substitute-in-file-name", Fsubstitute_in_file_name, 1, 1, 0, /*
|
|
|
1476 Substitute environment variables referred to in FILENAME.
|
|
|
1477 `$FOO' where FOO is an environment variable name means to substitute
|
|
|
1478 the value of that variable. The variable name should be terminated
|
|
444
|
1479 with a character, not a letter, digit or underscore; otherwise, enclose
|
|
428
|
1480 the entire variable name in braces.
|
|
|
1481 If `/~' appears, all of FILENAME through that `/' is discarded.
|
|
|
1482 */
|
|
444
|
1483 (filename))
|
|
428
|
1484 {
|
|
442
|
1485 /* This function can GC. GC checked 2000-07-28 ben. */
|
|
867
|
1486 Ibyte *nm;
|
|
|
1487
|
|
|
1488 Ibyte *s, *p, *o, *x, *endp;
|
|
|
1489 Ibyte *target = 0;
|
|
428
|
1490 int total = 0;
|
|
|
1491 int substituted = 0;
|
|
867
|
1492 Ibyte *xnm;
|
|
428
|
1493 Lisp_Object handler;
|
|
|
1494
|
|
444
|
1495 CHECK_STRING (filename);
|
|
428
|
1496
|
|
|
1497 /* If the file name has special constructs in it,
|
|
|
1498 call the corresponding file handler. */
|
|
444
|
1499 handler = Ffind_file_name_handler (filename, Qsubstitute_in_file_name);
|
|
428
|
1500 if (!NILP (handler))
|
|
|
1501 return call2_check_string_or_nil (handler, Qsubstitute_in_file_name,
|
|
444
|
1502 filename);
|
|
|
1503
|
|
|
1504 nm = XSTRING_DATA (filename);
|
|
|
1505 endp = nm + XSTRING_LENGTH (filename);
|
|
428
|
1506
|
|
|
1507 /* If /~ or // appears, discard everything through first slash. */
|
|
|
1508
|
|
|
1509 for (p = nm; p != endp; p++)
|
|
|
1510 {
|
|
|
1511 if ((p[0] == '~'
|
|
657
|
1512 #if defined (WIN32_FILENAMES)
|
|
440
|
1513 /* // at start of file name is meaningful in WindowsNT systems */
|
|
428
|
1514 || (IS_DIRECTORY_SEP (p[0]) && p - 1 != nm)
|
|
657
|
1515 #else /* not (WIN32_FILENAMES) */
|
|
428
|
1516 || IS_DIRECTORY_SEP (p[0])
|
|
657
|
1517 #endif /* not (WIN32_FILENAMES) */
|
|
428
|
1518 )
|
|
|
1519 && p != nm
|
|
|
1520 && (IS_DIRECTORY_SEP (p[-1])))
|
|
|
1521 {
|
|
|
1522 nm = p;
|
|
|
1523 substituted = 1;
|
|
|
1524 }
|
|
657
|
1525 #ifdef WIN32_FILENAMES
|
|
428
|
1526 /* see comment in expand-file-name about drive specifiers */
|
|
|
1527 else if (IS_DRIVE (p[0]) && p[1] == ':'
|
|
|
1528 && p > nm && IS_DIRECTORY_SEP (p[-1]))
|
|
|
1529 {
|
|
|
1530 nm = p;
|
|
|
1531 substituted = 1;
|
|
|
1532 }
|
|
657
|
1533 #endif /* WIN32_FILENAMES */
|
|
428
|
1534 }
|
|
|
1535
|
|
|
1536 /* See if any variables are substituted into the string
|
|
|
1537 and find the total length of their values in `total' */
|
|
|
1538
|
|
|
1539 for (p = nm; p != endp;)
|
|
|
1540 if (*p != '$')
|
|
|
1541 p++;
|
|
|
1542 else
|
|
|
1543 {
|
|
|
1544 p++;
|
|
|
1545 if (p == endp)
|
|
|
1546 goto badsubst;
|
|
|
1547 else if (*p == '$')
|
|
|
1548 {
|
|
|
1549 /* "$$" means a single "$" */
|
|
|
1550 p++;
|
|
|
1551 total -= 1;
|
|
|
1552 substituted = 1;
|
|
|
1553 continue;
|
|
|
1554 }
|
|
|
1555 else if (*p == '{')
|
|
|
1556 {
|
|
|
1557 o = ++p;
|
|
|
1558 while (p != endp && *p != '}') p++;
|
|
|
1559 if (*p != '}') goto missingclose;
|
|
|
1560 s = p;
|
|
|
1561 }
|
|
|
1562 else
|
|
|
1563 {
|
|
|
1564 o = p;
|
|
|
1565 while (p != endp && (isalnum (*p) || *p == '_')) p++;
|
|
|
1566 s = p;
|
|
|
1567 }
|
|
|
1568
|
|
|
1569 /* Copy out the variable name */
|
|
867
|
1570 target = (Ibyte *) ALLOCA (s - o + 1);
|
|
771
|
1571 qxestrncpy (target, o, s - o);
|
|
428
|
1572 target[s - o] = 0;
|
|
442
|
1573 #ifdef WIN32_NATIVE
|
|
428
|
1574 strupr (target); /* $home == $HOME etc. */
|
|
442
|
1575 #endif /* WIN32_NATIVE */
|
|
428
|
1576
|
|
|
1577 /* Get variable value */
|
|
867
|
1578 o = egetenv ((CIbyte *) target);
|
|
428
|
1579 if (!o) goto badvar;
|
|
771
|
1580 total += qxestrlen (o);
|
|
428
|
1581 substituted = 1;
|
|
|
1582 }
|
|
|
1583
|
|
|
1584 if (!substituted)
|
|
444
|
1585 return filename;
|
|
|
1586
|
|
|
1587 /* If substitution required, recopy the filename and do it */
|
|
428
|
1588 /* Make space in stack frame for the new copy */
|
|
867
|
1589 xnm = (Ibyte *) ALLOCA (XSTRING_LENGTH (filename) + total + 1);
|
|
428
|
1590 x = xnm;
|
|
|
1591
|
|
|
1592 /* Copy the rest of the name through, replacing $ constructs with values */
|
|
|
1593 for (p = nm; *p;)
|
|
|
1594 if (*p != '$')
|
|
|
1595 *x++ = *p++;
|
|
|
1596 else
|
|
|
1597 {
|
|
|
1598 p++;
|
|
|
1599 if (p == endp)
|
|
|
1600 goto badsubst;
|
|
|
1601 else if (*p == '$')
|
|
|
1602 {
|
|
|
1603 *x++ = *p++;
|
|
|
1604 continue;
|
|
|
1605 }
|
|
|
1606 else if (*p == '{')
|
|
|
1607 {
|
|
|
1608 o = ++p;
|
|
|
1609 while (p != endp && *p != '}') p++;
|
|
|
1610 if (*p != '}') goto missingclose;
|
|
|
1611 s = p++;
|
|
|
1612 }
|
|
|
1613 else
|
|
|
1614 {
|
|
|
1615 o = p;
|
|
|
1616 while (p != endp && (isalnum (*p) || *p == '_')) p++;
|
|
|
1617 s = p;
|
|
|
1618 }
|
|
|
1619
|
|
|
1620 /* Copy out the variable name */
|
|
867
|
1621 target = (Ibyte *) ALLOCA (s - o + 1);
|
|
771
|
1622 qxestrncpy (target, o, s - o);
|
|
428
|
1623 target[s - o] = 0;
|
|
442
|
1624 #ifdef WIN32_NATIVE
|
|
428
|
1625 strupr (target); /* $home == $HOME etc. */
|
|
442
|
1626 #endif /* WIN32_NATIVE */
|
|
428
|
1627
|
|
|
1628 /* Get variable value */
|
|
867
|
1629 o = egetenv ((CIbyte *) target);
|
|
428
|
1630 if (!o)
|
|
|
1631 goto badvar;
|
|
|
1632
|
|
771
|
1633 qxestrcpy (x, o);
|
|
|
1634 x += qxestrlen (o);
|
|
428
|
1635 }
|
|
|
1636
|
|
|
1637 *x = 0;
|
|
|
1638
|
|
|
1639 /* If /~ or // appears, discard everything through first slash. */
|
|
|
1640
|
|
|
1641 for (p = xnm; p != x; p++)
|
|
|
1642 if ((p[0] == '~'
|
|
657
|
1643 #if defined (WIN32_FILENAMES)
|
|
428
|
1644 || (IS_DIRECTORY_SEP (p[0]) && p - 1 != xnm)
|
|
657
|
1645 #else /* not WIN32_FILENAMES */
|
|
428
|
1646 || IS_DIRECTORY_SEP (p[0])
|
|
657
|
1647 #endif /* not WIN32_FILENAMES */
|
|
428
|
1648 )
|
|
|
1649 /* don't do p[-1] if that would go off the beginning --jwz */
|
|
|
1650 && p != nm && p > xnm && IS_DIRECTORY_SEP (p[-1]))
|
|
|
1651 xnm = p;
|
|
657
|
1652 #ifdef WIN32_FILENAMES
|
|
428
|
1653 else if (IS_DRIVE (p[0]) && p[1] == ':'
|
|
|
1654 && p > nm && IS_DIRECTORY_SEP (p[-1]))
|
|
|
1655 xnm = p;
|
|
|
1656 #endif
|
|
|
1657
|
|
|
1658 return make_string (xnm, x - xnm);
|
|
|
1659
|
|
|
1660 badsubst:
|
|
444
|
1661 syntax_error ("Bad format environment-variable substitution", filename);
|
|
428
|
1662 missingclose:
|
|
442
|
1663 syntax_error ("Missing \"}\" in environment-variable substitution",
|
|
444
|
1664 filename);
|
|
428
|
1665 badvar:
|
|
442
|
1666 syntax_error_2 ("Substituting nonexistent environment variable",
|
|
771
|
1667 filename, build_intstring (target));
|
|
428
|
1668
|
|
801
|
1669 RETURN_NOT_REACHED (Qnil)
|
|
428
|
1670 }
|
|
|
1671
|
|
|
1672 /* A slightly faster and more convenient way to get
|
|
|
1673 (directory-file-name (expand-file-name FOO)). */
|
|
|
1674
|
|
|
1675 Lisp_Object
|
|
|
1676 expand_and_dir_to_file (Lisp_Object filename, Lisp_Object defdir)
|
|
|
1677 {
|
|
442
|
1678 /* This function can call Lisp. GC checked 2000-07-28 ben */
|
|
428
|
1679 Lisp_Object abspath;
|
|
|
1680 struct gcpro gcpro1;
|
|
|
1681
|
|
|
1682 abspath = Fexpand_file_name (filename, defdir);
|
|
|
1683 GCPRO1 (abspath);
|
|
|
1684 /* Remove final slash, if any (unless path is root).
|
|
|
1685 stat behaves differently depending! */
|
|
|
1686 if (XSTRING_LENGTH (abspath) > 1
|
|
826
|
1687 && IS_DIRECTORY_SEP (string_byte (abspath, XSTRING_LENGTH (abspath) - 1))
|
|
|
1688 && !IS_DEVICE_SEP (string_byte (abspath, XSTRING_LENGTH (abspath) - 2)))
|
|
428
|
1689 /* We cannot take shortcuts; they might be wrong for magic file names. */
|
|
|
1690 abspath = Fdirectory_file_name (abspath);
|
|
|
1691 UNGCPRO;
|
|
|
1692 return abspath;
|
|
|
1693 }
|
|
|
1694
|
|
|
1695 /* Signal an error if the file ABSNAME already exists.
|
|
|
1696 If INTERACTIVE is nonzero, ask the user whether to proceed,
|
|
|
1697 and bypass the error if the user says to go ahead.
|
|
|
1698 QUERYSTRING is a name for the action that is being considered
|
|
|
1699 to alter the file.
|
|
|
1700 *STATPTR is used to store the stat information if the file exists.
|
|
|
1701 If the file does not exist, STATPTR->st_mode is set to 0. */
|
|
|
1702
|
|
|
1703 static void
|
|
442
|
1704 barf_or_query_if_file_exists (Lisp_Object absname, const char *querystring,
|
|
428
|
1705 int interactive, struct stat *statptr)
|
|
|
1706 {
|
|
442
|
1707 /* This function can call Lisp. GC checked 2000-07-28 ben */
|
|
428
|
1708 struct stat statbuf;
|
|
|
1709
|
|
|
1710 /* stat is a good way to tell whether the file exists,
|
|
|
1711 regardless of what access permissions it has. */
|
|
771
|
1712 if (qxe_stat (XSTRING_DATA (absname), &statbuf) >= 0)
|
|
428
|
1713 {
|
|
|
1714 Lisp_Object tem;
|
|
|
1715
|
|
|
1716 if (interactive)
|
|
|
1717 {
|
|
|
1718 Lisp_Object prompt;
|
|
|
1719 struct gcpro gcpro1;
|
|
|
1720
|
|
771
|
1721 prompt =
|
|
|
1722 emacs_sprintf_string
|
|
|
1723 (CGETTEXT ("File %s already exists; %s anyway? "),
|
|
|
1724 XSTRING_DATA (absname), CGETTEXT (querystring));
|
|
428
|
1725
|
|
|
1726 GCPRO1 (prompt);
|
|
|
1727 tem = call1 (Qyes_or_no_p, prompt);
|
|
|
1728 UNGCPRO;
|
|
|
1729 }
|
|
|
1730 else
|
|
|
1731 tem = Qnil;
|
|
|
1732
|
|
|
1733 if (NILP (tem))
|
|
|
1734 Fsignal (Qfile_already_exists,
|
|
771
|
1735 list2 (build_msg_string ("File already exists"),
|
|
428
|
1736 absname));
|
|
|
1737 if (statptr)
|
|
|
1738 *statptr = statbuf;
|
|
|
1739 }
|
|
|
1740 else
|
|
|
1741 {
|
|
|
1742 if (statptr)
|
|
|
1743 statptr->st_mode = 0;
|
|
|
1744 }
|
|
|
1745 return;
|
|
|
1746 }
|
|
|
1747
|
|
|
1748 DEFUN ("copy-file", Fcopy_file, 2, 4,
|
|
|
1749 "fCopy file: \nFCopy %s to file: \np\nP", /*
|
|
444
|
1750 Copy FILENAME to NEWNAME. Both args must be strings.
|
|
428
|
1751 Signals a `file-already-exists' error if file NEWNAME already exists,
|
|
|
1752 unless a third argument OK-IF-ALREADY-EXISTS is supplied and non-nil.
|
|
|
1753 A number as third arg means request confirmation if NEWNAME already exists.
|
|
|
1754 This is what happens in interactive use with M-x.
|
|
|
1755 Fourth arg KEEP-TIME non-nil means give the new file the same
|
|
|
1756 last-modified time as the old one. (This works on only some systems.)
|
|
|
1757 A prefix arg makes KEEP-TIME non-nil.
|
|
|
1758 */
|
|
|
1759 (filename, newname, ok_if_already_exists, keep_time))
|
|
|
1760 {
|
|
442
|
1761 /* This function can call Lisp. GC checked 2000-07-28 ben */
|
|
428
|
1762 int ifd, ofd, n;
|
|
|
1763 char buf[16 * 1024];
|
|
|
1764 struct stat st, out_st;
|
|
|
1765 Lisp_Object handler;
|
|
|
1766 int speccount = specpdl_depth ();
|
|
|
1767 struct gcpro gcpro1, gcpro2;
|
|
|
1768 /* Lisp_Object args[6]; */
|
|
|
1769 int input_file_statable_p;
|
|
|
1770
|
|
|
1771 GCPRO2 (filename, newname);
|
|
|
1772 CHECK_STRING (filename);
|
|
|
1773 CHECK_STRING (newname);
|
|
|
1774 filename = Fexpand_file_name (filename, Qnil);
|
|
|
1775 newname = Fexpand_file_name (newname, Qnil);
|
|
|
1776
|
|
|
1777 /* If the input file name has special constructs in it,
|
|
|
1778 call the corresponding file handler. */
|
|
|
1779 handler = Ffind_file_name_handler (filename, Qcopy_file);
|
|
|
1780 /* Likewise for output file name. */
|
|
|
1781 if (NILP (handler))
|
|
|
1782 handler = Ffind_file_name_handler (newname, Qcopy_file);
|
|
|
1783 if (!NILP (handler))
|
|
|
1784 {
|
|
|
1785 UNGCPRO;
|
|
|
1786 return call5 (handler, Qcopy_file, filename, newname,
|
|
|
1787 ok_if_already_exists, keep_time);
|
|
|
1788 }
|
|
|
1789
|
|
|
1790 /* When second argument is a directory, copy the file into it.
|
|
|
1791 (copy-file "foo" "bar/") == (copy-file "foo" "bar/foo")
|
|
|
1792 */
|
|
|
1793 if (!NILP (Ffile_directory_p (newname)))
|
|
|
1794 {
|
|
|
1795 Lisp_Object args[3];
|
|
|
1796 struct gcpro ngcpro1;
|
|
|
1797 int i = 1;
|
|
|
1798
|
|
|
1799 args[0] = newname;
|
|
|
1800 args[1] = Qnil; args[2] = Qnil;
|
|
|
1801 NGCPRO1 (*args);
|
|
|
1802 ngcpro1.nvars = 3;
|
|
826
|
1803 if (!IS_DIRECTORY_SEP (string_byte (newname,
|
|
442
|
1804 XSTRING_LENGTH (newname) - 1)))
|
|
|
1805
|
|
|
1806 args[i++] = Fchar_to_string (Vdirectory_sep_char);
|
|
428
|
1807 args[i++] = Ffile_name_nondirectory (filename);
|
|
|
1808 newname = Fconcat (i, args);
|
|
|
1809 NUNGCPRO;
|
|
|
1810 }
|
|
|
1811
|
|
|
1812 if (NILP (ok_if_already_exists)
|
|
|
1813 || INTP (ok_if_already_exists))
|
|
|
1814 barf_or_query_if_file_exists (newname, "copy to it",
|
|
|
1815 INTP (ok_if_already_exists), &out_st);
|
|
771
|
1816 else if (qxe_stat (XSTRING_DATA (newname), &out_st) < 0)
|
|
428
|
1817 out_st.st_mode = 0;
|
|
|
1818
|
|
771
|
1819 ifd = qxe_interruptible_open (XSTRING_DATA (filename),
|
|
|
1820 O_RDONLY | OPEN_BINARY, 0);
|
|
428
|
1821 if (ifd < 0)
|
|
563
|
1822 report_file_error ("Opening input file", filename);
|
|
428
|
1823
|
|
|
1824 record_unwind_protect (close_file_unwind, make_int (ifd));
|
|
|
1825
|
|
|
1826 /* We can only copy regular files and symbolic links. Other files are not
|
|
|
1827 copyable by us. */
|
|
771
|
1828 input_file_statable_p = (qxe_fstat (ifd, &st) >= 0);
|
|
428
|
1829
|
|
442
|
1830 #ifndef WIN32_NATIVE
|
|
428
|
1831 if (out_st.st_mode != 0
|
|
|
1832 && st.st_dev == out_st.st_dev && st.st_ino == out_st.st_ino)
|
|
|
1833 {
|
|
|
1834 errno = 0;
|
|
|
1835 report_file_error ("Input and output files are the same",
|
|
563
|
1836 list3 (Qunbound, filename, newname));
|
|
428
|
1837 }
|
|
|
1838 #endif
|
|
|
1839
|
|
|
1840 #if defined (S_ISREG) && defined (S_ISLNK)
|
|
|
1841 if (input_file_statable_p)
|
|
|
1842 {
|
|
|
1843 if (!(S_ISREG (st.st_mode))
|
|
|
1844 /* XEmacs: have to allow S_ISCHR in order to copy /dev/null */
|
|
|
1845 #ifdef S_ISCHR
|
|
|
1846 && !(S_ISCHR (st.st_mode))
|
|
|
1847 #endif
|
|
|
1848 && !(S_ISLNK (st.st_mode)))
|
|
|
1849 {
|
|
|
1850 #if defined (EISDIR)
|
|
|
1851 /* Get a better looking error message. */
|
|
|
1852 errno = EISDIR;
|
|
|
1853 #endif /* EISDIR */
|
|
563
|
1854 report_file_error ("Non-regular file", filename);
|
|
428
|
1855 }
|
|
|
1856 }
|
|
|
1857 #endif /* S_ISREG && S_ISLNK */
|
|
|
1858
|
|
771
|
1859 ofd = qxe_open (XSTRING_DATA (newname),
|
|
|
1860 O_WRONLY | O_CREAT | O_TRUNC | OPEN_BINARY, CREAT_MODE);
|
|
428
|
1861 if (ofd < 0)
|
|
563
|
1862 report_file_error ("Opening output file", newname);
|
|
428
|
1863
|
|
|
1864 {
|
|
|
1865 Lisp_Object ofd_locative = noseeum_cons (make_int (ofd), Qnil);
|
|
|
1866
|
|
|
1867 record_unwind_protect (close_file_unwind, ofd_locative);
|
|
|
1868
|
|
|
1869 while ((n = read_allowing_quit (ifd, buf, sizeof (buf))) > 0)
|
|
|
1870 {
|
|
|
1871 if (write_allowing_quit (ofd, buf, n) != n)
|
|
563
|
1872 report_file_error ("I/O error", newname);
|
|
428
|
1873 }
|
|
|
1874
|
|
|
1875 /* Closing the output clobbers the file times on some systems. */
|
|
771
|
1876 if (retry_close (ofd) < 0)
|
|
563
|
1877 report_file_error ("I/O error", newname);
|
|
428
|
1878
|
|
|
1879 if (input_file_statable_p)
|
|
|
1880 {
|
|
442
|
1881 if (!NILP (keep_time))
|
|
|
1882 {
|
|
|
1883 EMACS_TIME atime, mtime;
|
|
|
1884 EMACS_SET_SECS_USECS (atime, st.st_atime, 0);
|
|
|
1885 EMACS_SET_SECS_USECS (mtime, st.st_mtime, 0);
|
|
592
|
1886 if (set_file_times (newname, atime, mtime))
|
|
|
1887 report_file_error ("I/O error", list1 (newname));
|
|
442
|
1888 }
|
|
771
|
1889 qxe_chmod (XSTRING_DATA (newname), st.st_mode & 07777);
|
|
428
|
1890 }
|
|
|
1891
|
|
|
1892 /* We'll close it by hand */
|
|
|
1893 XCAR (ofd_locative) = Qnil;
|
|
|
1894
|
|
|
1895 /* Close ifd */
|
|
771
|
1896 unbind_to (speccount);
|
|
428
|
1897 }
|
|
|
1898
|
|
|
1899 UNGCPRO;
|
|
|
1900 return Qnil;
|
|
|
1901 }
|
|
|
1902
|
|
|
1903 DEFUN ("make-directory-internal", Fmake_directory_internal, 1, 1, 0, /*
|
|
|
1904 Create a directory. One argument, a file name string.
|
|
|
1905 */
|
|
|
1906 (dirname_))
|
|
|
1907 {
|
|
|
1908 /* This function can GC. GC checked 1997.04.06. */
|
|
|
1909 Lisp_Object handler;
|
|
|
1910 struct gcpro gcpro1;
|
|
771
|
1911 DECLARE_EISTRING (dir);
|
|
428
|
1912
|
|
|
1913 CHECK_STRING (dirname_);
|
|
|
1914 dirname_ = Fexpand_file_name (dirname_, Qnil);
|
|
|
1915
|
|
|
1916 GCPRO1 (dirname_);
|
|
|
1917 handler = Ffind_file_name_handler (dirname_, Qmake_directory_internal);
|
|
|
1918 UNGCPRO;
|
|
|
1919 if (!NILP (handler))
|
|
|
1920 return (call2 (handler, Qmake_directory_internal, dirname_));
|
|
|
1921
|
|
771
|
1922 eicpy_lstr (dir, dirname_);
|
|
|
1923 if (eigetch_char (dir, eicharlen (dir) - 1) == '/')
|
|
|
1924 eidel (dir, eilen (dir) - 1, -1, 1, -1);
|
|
|
1925
|
|
|
1926 if (qxe_mkdir (eidata (dir), 0777) != 0)
|
|
563
|
1927 report_file_error ("Creating directory", dirname_);
|
|
428
|
1928
|
|
|
1929 return Qnil;
|
|
|
1930 }
|
|
|
1931
|
|
|
1932 DEFUN ("delete-directory", Fdelete_directory, 1, 1, "FDelete directory: ", /*
|
|
|
1933 Delete a directory. One argument, a file name or directory name string.
|
|
|
1934 */
|
|
|
1935 (dirname_))
|
|
|
1936 {
|
|
|
1937 /* This function can GC. GC checked 1997.04.06. */
|
|
|
1938 Lisp_Object handler;
|
|
|
1939 struct gcpro gcpro1;
|
|
|
1940
|
|
|
1941 CHECK_STRING (dirname_);
|
|
|
1942
|
|
|
1943 GCPRO1 (dirname_);
|
|
|
1944 dirname_ = Fexpand_file_name (dirname_, Qnil);
|
|
|
1945 dirname_ = Fdirectory_file_name (dirname_);
|
|
|
1946
|
|
|
1947 handler = Ffind_file_name_handler (dirname_, Qdelete_directory);
|
|
|
1948 UNGCPRO;
|
|
|
1949 if (!NILP (handler))
|
|
|
1950 return (call2 (handler, Qdelete_directory, dirname_));
|
|
|
1951
|
|
771
|
1952 if (qxe_rmdir (XSTRING_DATA (dirname_)) != 0)
|
|
563
|
1953 report_file_error ("Removing directory", dirname_);
|
|
428
|
1954
|
|
|
1955 return Qnil;
|
|
|
1956 }
|
|
|
1957
|
|
|
1958 DEFUN ("delete-file", Fdelete_file, 1, 1, "fDelete file: ", /*
|
|
442
|
1959 Delete the file named FILENAME (a string).
|
|
|
1960 If FILENAME has multiple names, it continues to exist with the other names.
|
|
428
|
1961 */
|
|
|
1962 (filename))
|
|
|
1963 {
|
|
|
1964 /* This function can GC. GC checked 1997.04.06. */
|
|
|
1965 Lisp_Object handler;
|
|
|
1966 struct gcpro gcpro1;
|
|
|
1967
|
|
|
1968 CHECK_STRING (filename);
|
|
|
1969 filename = Fexpand_file_name (filename, Qnil);
|
|
|
1970
|
|
|
1971 GCPRO1 (filename);
|
|
|
1972 handler = Ffind_file_name_handler (filename, Qdelete_file);
|
|
|
1973 UNGCPRO;
|
|
|
1974 if (!NILP (handler))
|
|
|
1975 return call2 (handler, Qdelete_file, filename);
|
|
|
1976
|
|
771
|
1977 if (0 > qxe_unlink (XSTRING_DATA (filename)))
|
|
563
|
1978 report_file_error ("Removing old name", filename);
|
|
428
|
1979 return Qnil;
|
|
|
1980 }
|
|
|
1981
|
|
|
1982 static Lisp_Object
|
|
|
1983 internal_delete_file_1 (Lisp_Object ignore, Lisp_Object ignore2)
|
|
|
1984 {
|
|
|
1985 return Qt;
|
|
|
1986 }
|
|
|
1987
|
|
|
1988 /* Delete file FILENAME, returning 1 if successful and 0 if failed. */
|
|
|
1989
|
|
|
1990 int
|
|
|
1991 internal_delete_file (Lisp_Object filename)
|
|
|
1992 {
|
|
|
1993 /* This function can GC. GC checked 1997.04.06. */
|
|
|
1994 return NILP (condition_case_1 (Qt, Fdelete_file, filename,
|
|
|
1995 internal_delete_file_1, Qnil));
|
|
|
1996 }
|
|
|
1997
|
|
|
1998 DEFUN ("rename-file", Frename_file, 2, 3,
|
|
|
1999 "fRename file: \nFRename %s to file: \np", /*
|
|
444
|
2000 Rename FILENAME as NEWNAME. Both args must be strings.
|
|
|
2001 If file has names other than FILENAME, it continues to have those names.
|
|
428
|
2002 Signals a `file-already-exists' error if a file NEWNAME already exists
|
|
|
2003 unless optional third argument OK-IF-ALREADY-EXISTS is non-nil.
|
|
|
2004 A number as third arg means request confirmation if NEWNAME already exists.
|
|
|
2005 This is what happens in interactive use with M-x.
|
|
|
2006 */
|
|
|
2007 (filename, newname, ok_if_already_exists))
|
|
|
2008 {
|
|
|
2009 /* This function can GC. GC checked 1997.04.06. */
|
|
|
2010 Lisp_Object handler;
|
|
|
2011 struct gcpro gcpro1, gcpro2;
|
|
|
2012
|
|
|
2013 GCPRO2 (filename, newname);
|
|
|
2014 CHECK_STRING (filename);
|
|
|
2015 CHECK_STRING (newname);
|
|
|
2016 filename = Fexpand_file_name (filename, Qnil);
|
|
|
2017 newname = Fexpand_file_name (newname, Qnil);
|
|
|
2018
|
|
|
2019 /* If the file name has special constructs in it,
|
|
|
2020 call the corresponding file handler. */
|
|
|
2021 handler = Ffind_file_name_handler (filename, Qrename_file);
|
|
|
2022 if (NILP (handler))
|
|
|
2023 handler = Ffind_file_name_handler (newname, Qrename_file);
|
|
|
2024 if (!NILP (handler))
|
|
|
2025 {
|
|
|
2026 UNGCPRO;
|
|
|
2027 return call4 (handler, Qrename_file,
|
|
|
2028 filename, newname, ok_if_already_exists);
|
|
|
2029 }
|
|
|
2030
|
|
|
2031 /* When second argument is a directory, rename the file into it.
|
|
|
2032 (rename-file "foo" "bar/") == (rename-file "foo" "bar/foo")
|
|
|
2033 */
|
|
|
2034 if (!NILP (Ffile_directory_p (newname)))
|
|
|
2035 {
|
|
|
2036 Lisp_Object args[3];
|
|
|
2037 struct gcpro ngcpro1;
|
|
|
2038 int i = 1;
|
|
|
2039
|
|
|
2040 args[0] = newname;
|
|
|
2041 args[1] = Qnil; args[2] = Qnil;
|
|
|
2042 NGCPRO1 (*args);
|
|
|
2043 ngcpro1.nvars = 3;
|
|
826
|
2044 if (string_byte (newname, XSTRING_LENGTH (newname) - 1) != '/')
|
|
428
|
2045 args[i++] = build_string ("/");
|
|
|
2046 args[i++] = Ffile_name_nondirectory (filename);
|
|
|
2047 newname = Fconcat (i, args);
|
|
|
2048 NUNGCPRO;
|
|
|
2049 }
|
|
|
2050
|
|
|
2051 if (NILP (ok_if_already_exists)
|
|
|
2052 || INTP (ok_if_already_exists))
|
|
|
2053 barf_or_query_if_file_exists (newname, "rename to it",
|
|
|
2054 INTP (ok_if_already_exists), 0);
|
|
|
2055
|
|
442
|
2056 /* We have configure check for rename() and emulate using
|
|
|
2057 link()/unlink() if necessary. */
|
|
771
|
2058 if (0 > qxe_rename (XSTRING_DATA (filename), XSTRING_DATA (newname)))
|
|
428
|
2059 {
|
|
|
2060 if (errno == EXDEV)
|
|
|
2061 {
|
|
|
2062 Fcopy_file (filename, newname,
|
|
|
2063 /* We have already prompted if it was an integer,
|
|
|
2064 so don't have copy-file prompt again. */
|
|
|
2065 (NILP (ok_if_already_exists) ? Qnil : Qt),
|
|
|
2066 Qt);
|
|
|
2067 Fdelete_file (filename);
|
|
|
2068 }
|
|
|
2069 else
|
|
|
2070 {
|
|
563
|
2071 report_file_error ("Renaming", list3 (Qunbound, filename, newname));
|
|
428
|
2072 }
|
|
|
2073 }
|
|
|
2074 UNGCPRO;
|
|
|
2075 return Qnil;
|
|
|
2076 }
|
|
|
2077
|
|
|
2078 DEFUN ("add-name-to-file", Fadd_name_to_file, 2, 3,
|
|
|
2079 "fAdd name to file: \nFName to add to %s: \np", /*
|
|
444
|
2080 Give FILENAME additional name NEWNAME. Both args must be strings.
|
|
428
|
2081 Signals a `file-already-exists' error if a file NEWNAME already exists
|
|
|
2082 unless optional third argument OK-IF-ALREADY-EXISTS is non-nil.
|
|
|
2083 A number as third arg means request confirmation if NEWNAME already exists.
|
|
|
2084 This is what happens in interactive use with M-x.
|
|
|
2085 */
|
|
|
2086 (filename, newname, ok_if_already_exists))
|
|
|
2087 {
|
|
|
2088 /* This function can GC. GC checked 1997.04.06. */
|
|
|
2089 Lisp_Object handler;
|
|
|
2090 struct gcpro gcpro1, gcpro2;
|
|
|
2091
|
|
|
2092 GCPRO2 (filename, newname);
|
|
|
2093 CHECK_STRING (filename);
|
|
|
2094 CHECK_STRING (newname);
|
|
|
2095 filename = Fexpand_file_name (filename, Qnil);
|
|
|
2096 newname = Fexpand_file_name (newname, Qnil);
|
|
|
2097
|
|
|
2098 /* If the file name has special constructs in it,
|
|
|
2099 call the corresponding file handler. */
|
|
|
2100 handler = Ffind_file_name_handler (filename, Qadd_name_to_file);
|
|
|
2101 if (!NILP (handler))
|
|
|
2102 RETURN_UNGCPRO (call4 (handler, Qadd_name_to_file, filename,
|
|
|
2103 newname, ok_if_already_exists));
|
|
|
2104
|
|
|
2105 /* If the new name has special constructs in it,
|
|
|
2106 call the corresponding file handler. */
|
|
|
2107 handler = Ffind_file_name_handler (newname, Qadd_name_to_file);
|
|
|
2108 if (!NILP (handler))
|
|
|
2109 RETURN_UNGCPRO (call4 (handler, Qadd_name_to_file, filename,
|
|
|
2110 newname, ok_if_already_exists));
|
|
|
2111
|
|
|
2112 if (NILP (ok_if_already_exists)
|
|
|
2113 || INTP (ok_if_already_exists))
|
|
|
2114 barf_or_query_if_file_exists (newname, "make it a new name",
|
|
|
2115 INTP (ok_if_already_exists), 0);
|
|
771
|
2116 /* #### Emacs 20.6 contains an implementation of link() in w32.c.
|
|
|
2117 Need to port. */
|
|
|
2118 #ifndef HAVE_LINK
|
|
563
|
2119 signal_error_2 (Qunimplemented, "Adding new name", filename, newname);
|
|
771
|
2120 #else /* HAVE_LINK */
|
|
|
2121 qxe_unlink (XSTRING_DATA (newname));
|
|
|
2122 if (0 > qxe_link (XSTRING_DATA (filename), XSTRING_DATA (newname)))
|
|
428
|
2123 {
|
|
|
2124 report_file_error ("Adding new name",
|
|
563
|
2125 list3 (Qunbound, filename, newname));
|
|
428
|
2126 }
|
|
771
|
2127 #endif /* HAVE_LINK */
|
|
428
|
2128
|
|
|
2129 UNGCPRO;
|
|
|
2130 return Qnil;
|
|
|
2131 }
|
|
|
2132
|
|
|
2133 DEFUN ("make-symbolic-link", Fmake_symbolic_link, 2, 3,
|
|
|
2134 "FMake symbolic link to file: \nFMake symbolic link to file %s: \np", /*
|
|
|
2135 Make a symbolic link to FILENAME, named LINKNAME. Both args strings.
|
|
|
2136 Signals a `file-already-exists' error if a file LINKNAME already exists
|
|
|
2137 unless optional third argument OK-IF-ALREADY-EXISTS is non-nil.
|
|
|
2138 A number as third arg means request confirmation if LINKNAME already exists.
|
|
|
2139 This happens for interactive use with M-x.
|
|
|
2140 */
|
|
|
2141 (filename, linkname, ok_if_already_exists))
|
|
|
2142 {
|
|
|
2143 /* This function can GC. GC checked 1997.06.04. */
|
|
442
|
2144 /* XEmacs change: run handlers even if local machine doesn't have symlinks */
|
|
428
|
2145 Lisp_Object handler;
|
|
|
2146 struct gcpro gcpro1, gcpro2;
|
|
|
2147
|
|
|
2148 GCPRO2 (filename, linkname);
|
|
|
2149 CHECK_STRING (filename);
|
|
|
2150 CHECK_STRING (linkname);
|
|
|
2151 /* If the link target has a ~, we must expand it to get
|
|
|
2152 a truly valid file name. Otherwise, do not expand;
|
|
|
2153 we want to permit links to relative file names. */
|
|
826
|
2154 if (string_byte (filename, 0) == '~')
|
|
428
|
2155 filename = Fexpand_file_name (filename, Qnil);
|
|
|
2156 linkname = Fexpand_file_name (linkname, Qnil);
|
|
|
2157
|
|
|
2158 /* If the file name has special constructs in it,
|
|
|
2159 call the corresponding file handler. */
|
|
|
2160 handler = Ffind_file_name_handler (filename, Qmake_symbolic_link);
|
|
|
2161 if (!NILP (handler))
|
|
|
2162 RETURN_UNGCPRO (call4 (handler, Qmake_symbolic_link, filename, linkname,
|
|
|
2163 ok_if_already_exists));
|
|
|
2164
|
|
|
2165 /* If the new link name has special constructs in it,
|
|
|
2166 call the corresponding file handler. */
|
|
|
2167 handler = Ffind_file_name_handler (linkname, Qmake_symbolic_link);
|
|
|
2168 if (!NILP (handler))
|
|
|
2169 RETURN_UNGCPRO (call4 (handler, Qmake_symbolic_link, filename,
|
|
|
2170 linkname, ok_if_already_exists));
|
|
|
2171
|
|
771
|
2172 #ifdef HAVE_SYMLINK
|
|
428
|
2173 if (NILP (ok_if_already_exists)
|
|
|
2174 || INTP (ok_if_already_exists))
|
|
|
2175 barf_or_query_if_file_exists (linkname, "make it a link",
|
|
|
2176 INTP (ok_if_already_exists), 0);
|
|
|
2177
|
|
771
|
2178 qxe_unlink (XSTRING_DATA (linkname));
|
|
|
2179 if (0 > qxe_symlink (XSTRING_DATA (filename),
|
|
|
2180 XSTRING_DATA (linkname)))
|
|
428
|
2181 {
|
|
|
2182 report_file_error ("Making symbolic link",
|
|
563
|
2183 list3 (Qunbound, filename, linkname));
|
|
428
|
2184 }
|
|
771
|
2185 #endif
|
|
442
|
2186
|
|
428
|
2187 UNGCPRO;
|
|
|
2188 return Qnil;
|
|
|
2189 }
|
|
|
2190
|
|
|
2191 #ifdef HPUX_NET
|
|
|
2192
|
|
|
2193 DEFUN ("sysnetunam", Fsysnetunam, 2, 2, 0, /*
|
|
|
2194 Open a network connection to PATH using LOGIN as the login string.
|
|
|
2195 */
|
|
|
2196 (path, login))
|
|
|
2197 {
|
|
|
2198 int netresult;
|
|
440
|
2199 const char *path_ext;
|
|
|
2200 const char *login_ext;
|
|
428
|
2201
|
|
|
2202 CHECK_STRING (path);
|
|
|
2203 CHECK_STRING (login);
|
|
|
2204
|
|
|
2205 /* netunam, being a strange-o system call only used once, is not
|
|
|
2206 encapsulated. */
|
|
440
|
2207
|
|
442
|
2208 LISP_STRING_TO_EXTERNAL (path, path_ext, Qfile_name);
|
|
|
2209 LISP_STRING_TO_EXTERNAL (login, login_ext, Qnative);
|
|
440
|
2210
|
|
|
2211 netresult = netunam (path_ext, login_ext);
|
|
|
2212
|
|
|
2213 return netresult == -1 ? Qnil : Qt;
|
|
428
|
2214 }
|
|
|
2215 #endif /* HPUX_NET */
|
|
|
2216
|
|
|
2217 DEFUN ("file-name-absolute-p", Ffile_name_absolute_p, 1, 1, 0, /*
|
|
|
2218 Return t if file FILENAME specifies an absolute path name.
|
|
|
2219 On Unix, this is a name starting with a `/' or a `~'.
|
|
|
2220 */
|
|
|
2221 (filename))
|
|
|
2222 {
|
|
|
2223 /* This function does not GC */
|
|
867
|
2224 Ibyte *ptr;
|
|
428
|
2225
|
|
|
2226 CHECK_STRING (filename);
|
|
|
2227 ptr = XSTRING_DATA (filename);
|
|
|
2228 return (IS_DIRECTORY_SEP (*ptr) || *ptr == '~'
|
|
657
|
2229 #ifdef WIN32_FILENAMES
|
|
428
|
2230 || (IS_DRIVE (*ptr) && ptr[1] == ':' && IS_DIRECTORY_SEP (ptr[2]))
|
|
|
2231 #endif
|
|
|
2232 ) ? Qt : Qnil;
|
|
|
2233 }
|
|
|
2234
|
|
|
2235 /* Return nonzero if file FILENAME exists and can be executed. */
|
|
|
2236
|
|
|
2237 static int
|
|
771
|
2238 check_executable (Lisp_Object filename)
|
|
428
|
2239 {
|
|
442
|
2240 #ifdef WIN32_NATIVE
|
|
428
|
2241 struct stat st;
|
|
771
|
2242 if (qxe_stat (XSTRING_DATA (filename), &st) < 0)
|
|
428
|
2243 return 0;
|
|
|
2244 return ((st.st_mode & S_IEXEC) != 0);
|
|
442
|
2245 #else /* not WIN32_NATIVE */
|
|
428
|
2246 #ifdef HAVE_EACCESS
|
|
771
|
2247 return qxe_eaccess (XSTRING_DATA (filename), X_OK) >= 0;
|
|
428
|
2248 #else
|
|
|
2249 /* Access isn't quite right because it uses the real uid
|
|
|
2250 and we really want to test with the effective uid.
|
|
|
2251 But Unix doesn't give us a right way to do it. */
|
|
771
|
2252 return qxe_access (XSTRING_DATA (filename), X_OK) >= 0;
|
|
428
|
2253 #endif /* HAVE_EACCESS */
|
|
442
|
2254 #endif /* not WIN32_NATIVE */
|
|
428
|
2255 }
|
|
|
2256
|
|
|
2257 /* Return nonzero if file FILENAME exists and can be written. */
|
|
|
2258
|
|
|
2259 static int
|
|
867
|
2260 check_writable (const Ibyte *filename)
|
|
428
|
2261 {
|
|
|
2262 #ifdef HAVE_EACCESS
|
|
771
|
2263 return (qxe_eaccess (filename, W_OK) >= 0);
|
|
428
|
2264 #else
|
|
|
2265 /* Access isn't quite right because it uses the real uid
|
|
|
2266 and we really want to test with the effective uid.
|
|
|
2267 But Unix doesn't give us a right way to do it.
|
|
|
2268 Opening with O_WRONLY could work for an ordinary file,
|
|
|
2269 but would lose for directories. */
|
|
771
|
2270 return (qxe_access (filename, W_OK) >= 0);
|
|
428
|
2271 #endif
|
|
|
2272 }
|
|
|
2273
|
|
|
2274 DEFUN ("file-exists-p", Ffile_exists_p, 1, 1, 0, /*
|
|
|
2275 Return t if file FILENAME exists. (This does not mean you can read it.)
|
|
|
2276 See also `file-readable-p' and `file-attributes'.
|
|
|
2277 */
|
|
|
2278 (filename))
|
|
|
2279 {
|
|
442
|
2280 /* This function can call lisp; GC checked 2000-07-11 ben */
|
|
428
|
2281 Lisp_Object abspath;
|
|
|
2282 Lisp_Object handler;
|
|
|
2283 struct stat statbuf;
|
|
|
2284 struct gcpro gcpro1;
|
|
|
2285
|
|
|
2286 CHECK_STRING (filename);
|
|
|
2287 abspath = Fexpand_file_name (filename, Qnil);
|
|
|
2288
|
|
|
2289 /* If the file name has special constructs in it,
|
|
|
2290 call the corresponding file handler. */
|
|
|
2291 GCPRO1 (abspath);
|
|
|
2292 handler = Ffind_file_name_handler (abspath, Qfile_exists_p);
|
|
|
2293 UNGCPRO;
|
|
|
2294 if (!NILP (handler))
|
|
|
2295 return call2 (handler, Qfile_exists_p, abspath);
|
|
|
2296
|
|
771
|
2297 return qxe_stat (XSTRING_DATA (abspath), &statbuf) >= 0 ? Qt : Qnil;
|
|
428
|
2298 }
|
|
|
2299
|
|
|
2300 DEFUN ("file-executable-p", Ffile_executable_p, 1, 1, 0, /*
|
|
|
2301 Return t if FILENAME can be executed by you.
|
|
|
2302 For a directory, this means you can access files in that directory.
|
|
|
2303 */
|
|
|
2304 (filename))
|
|
|
2305
|
|
|
2306 {
|
|
442
|
2307 /* This function can GC. GC checked 07-11-2000 ben. */
|
|
428
|
2308 Lisp_Object abspath;
|
|
|
2309 Lisp_Object handler;
|
|
|
2310 struct gcpro gcpro1;
|
|
|
2311
|
|
|
2312 CHECK_STRING (filename);
|
|
|
2313 abspath = Fexpand_file_name (filename, Qnil);
|
|
|
2314
|
|
|
2315 /* If the file name has special constructs in it,
|
|
|
2316 call the corresponding file handler. */
|
|
|
2317 GCPRO1 (abspath);
|
|
|
2318 handler = Ffind_file_name_handler (abspath, Qfile_executable_p);
|
|
|
2319 UNGCPRO;
|
|
|
2320 if (!NILP (handler))
|
|
|
2321 return call2 (handler, Qfile_executable_p, abspath);
|
|
|
2322
|
|
771
|
2323 return check_executable (abspath) ? Qt : Qnil;
|
|
428
|
2324 }
|
|
|
2325
|
|
|
2326 DEFUN ("file-readable-p", Ffile_readable_p, 1, 1, 0, /*
|
|
|
2327 Return t if file FILENAME exists and you can read it.
|
|
|
2328 See also `file-exists-p' and `file-attributes'.
|
|
|
2329 */
|
|
|
2330 (filename))
|
|
|
2331 {
|
|
|
2332 /* This function can GC */
|
|
|
2333 Lisp_Object abspath = Qnil;
|
|
|
2334 Lisp_Object handler;
|
|
|
2335 struct gcpro gcpro1;
|
|
|
2336 GCPRO1 (abspath);
|
|
|
2337
|
|
|
2338 CHECK_STRING (filename);
|
|
|
2339 abspath = Fexpand_file_name (filename, Qnil);
|
|
|
2340
|
|
|
2341 /* If the file name has special constructs in it,
|
|
|
2342 call the corresponding file handler. */
|
|
|
2343 handler = Ffind_file_name_handler (abspath, Qfile_readable_p);
|
|
|
2344 if (!NILP (handler))
|
|
|
2345 RETURN_UNGCPRO (call2 (handler, Qfile_readable_p, abspath));
|
|
|
2346
|
|
657
|
2347 #if defined(WIN32_FILENAMES)
|
|
428
|
2348 /* Under MS-DOS and Windows, open does not work for directories. */
|
|
|
2349 UNGCPRO;
|
|
771
|
2350 if (qxe_access (XSTRING_DATA (abspath), 0) == 0)
|
|
428
|
2351 return Qt;
|
|
|
2352 else
|
|
|
2353 return Qnil;
|
|
657
|
2354 #else /* not WIN32_FILENAMES */
|
|
428
|
2355 {
|
|
771
|
2356 int desc = qxe_interruptible_open (XSTRING_DATA (abspath),
|
|
|
2357 O_RDONLY | OPEN_BINARY, 0);
|
|
428
|
2358 UNGCPRO;
|
|
|
2359 if (desc < 0)
|
|
|
2360 return Qnil;
|
|
771
|
2361 retry_close (desc);
|
|
428
|
2362 return Qt;
|
|
|
2363 }
|
|
657
|
2364 #endif /* not WIN32_FILENAMES */
|
|
428
|
2365 }
|
|
|
2366
|
|
|
2367 /* Having this before file-symlink-p mysteriously caused it to be forgotten
|
|
|
2368 on the RT/PC. */
|
|
|
2369 DEFUN ("file-writable-p", Ffile_writable_p, 1, 1, 0, /*
|
|
|
2370 Return t if file FILENAME can be written or created by you.
|
|
|
2371 */
|
|
|
2372 (filename))
|
|
|
2373 {
|
|
|
2374 /* This function can GC. GC checked 1997.04.10. */
|
|
|
2375 Lisp_Object abspath, dir;
|
|
|
2376 Lisp_Object handler;
|
|
|
2377 struct stat statbuf;
|
|
|
2378 struct gcpro gcpro1;
|
|
|
2379
|
|
|
2380 CHECK_STRING (filename);
|
|
|
2381 abspath = Fexpand_file_name (filename, Qnil);
|
|
|
2382
|
|
|
2383 /* If the file name has special constructs in it,
|
|
|
2384 call the corresponding file handler. */
|
|
|
2385 GCPRO1 (abspath);
|
|
|
2386 handler = Ffind_file_name_handler (abspath, Qfile_writable_p);
|
|
|
2387 UNGCPRO;
|
|
|
2388 if (!NILP (handler))
|
|
|
2389 return call2 (handler, Qfile_writable_p, abspath);
|
|
|
2390
|
|
771
|
2391 if (qxe_stat (XSTRING_DATA (abspath), &statbuf) >= 0)
|
|
|
2392 return (check_writable (XSTRING_DATA (abspath))
|
|
428
|
2393 ? Qt : Qnil);
|
|
|
2394
|
|
|
2395
|
|
|
2396 GCPRO1 (abspath);
|
|
|
2397 dir = Ffile_name_directory (abspath);
|
|
|
2398 UNGCPRO;
|
|
867
|
2399 return (check_writable (!NILP (dir) ? XSTRING_DATA (dir) : (Ibyte *) "")
|
|
428
|
2400 ? Qt : Qnil);
|
|
|
2401 }
|
|
|
2402
|
|
|
2403 DEFUN ("file-symlink-p", Ffile_symlink_p, 1, 1, 0, /*
|
|
|
2404 Return non-nil if file FILENAME is the name of a symbolic link.
|
|
|
2405 The value is the name of the file to which it is linked.
|
|
|
2406 Otherwise returns nil.
|
|
|
2407 */
|
|
|
2408 (filename))
|
|
|
2409 {
|
|
|
2410 /* This function can GC. GC checked 1997.04.10. */
|
|
442
|
2411 /* XEmacs change: run handlers even if local machine doesn't have symlinks */
|
|
771
|
2412 #ifdef HAVE_READLINK
|
|
867
|
2413 Ibyte *buf;
|
|
428
|
2414 int bufsize;
|
|
|
2415 int valsize;
|
|
|
2416 Lisp_Object val;
|
|
442
|
2417 #endif
|
|
428
|
2418 Lisp_Object handler;
|
|
|
2419 struct gcpro gcpro1;
|
|
|
2420
|
|
|
2421 CHECK_STRING (filename);
|
|
|
2422 filename = Fexpand_file_name (filename, Qnil);
|
|
|
2423
|
|
|
2424 /* If the file name has special constructs in it,
|
|
|
2425 call the corresponding file handler. */
|
|
|
2426 GCPRO1 (filename);
|
|
|
2427 handler = Ffind_file_name_handler (filename, Qfile_symlink_p);
|
|
|
2428 UNGCPRO;
|
|
|
2429 if (!NILP (handler))
|
|
|
2430 return call2 (handler, Qfile_symlink_p, filename);
|
|
|
2431
|
|
771
|
2432 #ifdef HAVE_READLINK
|
|
428
|
2433 bufsize = 100;
|
|
|
2434 while (1)
|
|
|
2435 {
|
|
867
|
2436 buf = xnew_array_and_zero (Ibyte, bufsize);
|
|
771
|
2437 valsize = qxe_readlink (XSTRING_DATA (filename),
|
|
|
2438 buf, bufsize);
|
|
428
|
2439 if (valsize < bufsize) break;
|
|
|
2440 /* Buffer was not long enough */
|
|
|
2441 xfree (buf);
|
|
|
2442 bufsize *= 2;
|
|
|
2443 }
|
|
|
2444 if (valsize == -1)
|
|
|
2445 {
|
|
|
2446 xfree (buf);
|
|
|
2447 return Qnil;
|
|
|
2448 }
|
|
771
|
2449 val = make_string (buf, valsize);
|
|
428
|
2450 xfree (buf);
|
|
|
2451 return val;
|
|
771
|
2452 #else /* not HAVE_READLINK */
|
|
428
|
2453 return Qnil;
|
|
771
|
2454 #endif /* not HAVE_READLINK */
|
|
428
|
2455 }
|
|
|
2456
|
|
|
2457 DEFUN ("file-directory-p", Ffile_directory_p, 1, 1, 0, /*
|
|
|
2458 Return t if file FILENAME is the name of a directory as a file.
|
|
|
2459 A directory name spec may be given instead; then the value is t
|
|
|
2460 if the directory so specified exists and really is a directory.
|
|
|
2461 */
|
|
|
2462 (filename))
|
|
|
2463 {
|
|
|
2464 /* This function can GC. GC checked 1997.04.10. */
|
|
|
2465 Lisp_Object abspath;
|
|
|
2466 struct stat st;
|
|
|
2467 Lisp_Object handler;
|
|
|
2468 struct gcpro gcpro1;
|
|
|
2469
|
|
|
2470 GCPRO1 (current_buffer->directory);
|
|
|
2471 abspath = expand_and_dir_to_file (filename,
|
|
|
2472 current_buffer->directory);
|
|
|
2473 UNGCPRO;
|
|
|
2474
|
|
|
2475 /* If the file name has special constructs in it,
|
|
|
2476 call the corresponding file handler. */
|
|
|
2477 GCPRO1 (abspath);
|
|
|
2478 handler = Ffind_file_name_handler (abspath, Qfile_directory_p);
|
|
|
2479 UNGCPRO;
|
|
|
2480 if (!NILP (handler))
|
|
|
2481 return call2 (handler, Qfile_directory_p, abspath);
|
|
|
2482
|
|
771
|
2483 if (qxe_stat (XSTRING_DATA (abspath), &st) < 0)
|
|
428
|
2484 return Qnil;
|
|
|
2485 return (st.st_mode & S_IFMT) == S_IFDIR ? Qt : Qnil;
|
|
|
2486 }
|
|
|
2487
|
|
|
2488 DEFUN ("file-accessible-directory-p", Ffile_accessible_directory_p, 1, 1, 0, /*
|
|
|
2489 Return t if file FILENAME is the name of a directory as a file,
|
|
|
2490 and files in that directory can be opened by you. In order to use a
|
|
|
2491 directory as a buffer's current directory, this predicate must return true.
|
|
|
2492 A directory name spec may be given instead; then the value is t
|
|
|
2493 if the directory so specified exists and really is a readable and
|
|
|
2494 searchable directory.
|
|
|
2495 */
|
|
|
2496 (filename))
|
|
|
2497 {
|
|
|
2498 /* This function can GC. GC checked 1997.04.10. */
|
|
|
2499 Lisp_Object handler;
|
|
|
2500
|
|
|
2501 /* If the file name has special constructs in it,
|
|
|
2502 call the corresponding file handler. */
|
|
|
2503 handler = Ffind_file_name_handler (filename, Qfile_accessible_directory_p);
|
|
|
2504 if (!NILP (handler))
|
|
|
2505 return call2 (handler, Qfile_accessible_directory_p,
|
|
|
2506 filename);
|
|
|
2507
|
|
442
|
2508 #if !defined(WIN32_NATIVE)
|
|
428
|
2509 if (NILP (Ffile_directory_p (filename)))
|
|
|
2510 return (Qnil);
|
|
|
2511 else
|
|
|
2512 return Ffile_executable_p (filename);
|
|
|
2513 #else
|
|
|
2514 {
|
|
|
2515 int tem;
|
|
|
2516 struct gcpro gcpro1;
|
|
|
2517 /* It's an unlikely combination, but yes we really do need to gcpro:
|
|
|
2518 Suppose that file-accessible-directory-p has no handler, but
|
|
|
2519 file-directory-p does have a handler; this handler causes a GC which
|
|
|
2520 relocates the string in `filename'; and finally file-directory-p
|
|
|
2521 returns non-nil. Then we would end up passing a garbaged string
|
|
|
2522 to file-executable-p. */
|
|
|
2523 GCPRO1 (filename);
|
|
|
2524 tem = (NILP (Ffile_directory_p (filename))
|
|
|
2525 || NILP (Ffile_executable_p (filename)));
|
|
|
2526 UNGCPRO;
|
|
|
2527 return tem ? Qnil : Qt;
|
|
|
2528 }
|
|
442
|
2529 #endif /* !defined(WIN32_NATIVE) */
|
|
428
|
2530 }
|
|
|
2531
|
|
|
2532 DEFUN ("file-regular-p", Ffile_regular_p, 1, 1, 0, /*
|
|
|
2533 Return t if file FILENAME is the name of a regular file.
|
|
|
2534 This is the sort of file that holds an ordinary stream of data bytes.
|
|
|
2535 */
|
|
|
2536 (filename))
|
|
|
2537 {
|
|
|
2538 /* This function can GC. GC checked 1997.04.10. */
|
|
|
2539 Lisp_Object abspath;
|
|
|
2540 struct stat st;
|
|
|
2541 Lisp_Object handler;
|
|
|
2542 struct gcpro gcpro1;
|
|
|
2543
|
|
|
2544 GCPRO1 (current_buffer->directory);
|
|
|
2545 abspath = expand_and_dir_to_file (filename, current_buffer->directory);
|
|
|
2546 UNGCPRO;
|
|
|
2547
|
|
|
2548 /* If the file name has special constructs in it,
|
|
|
2549 call the corresponding file handler. */
|
|
|
2550 GCPRO1 (abspath);
|
|
|
2551 handler = Ffind_file_name_handler (abspath, Qfile_regular_p);
|
|
|
2552 UNGCPRO;
|
|
|
2553 if (!NILP (handler))
|
|
|
2554 return call2 (handler, Qfile_regular_p, abspath);
|
|
|
2555
|
|
771
|
2556 if (qxe_stat (XSTRING_DATA (abspath), &st) < 0)
|
|
428
|
2557 return Qnil;
|
|
|
2558 return (st.st_mode & S_IFMT) == S_IFREG ? Qt : Qnil;
|
|
|
2559 }
|
|
|
2560
|
|
|
2561 DEFUN ("file-modes", Ffile_modes, 1, 1, 0, /*
|
|
444
|
2562 Return mode bits of file named FILENAME, as an integer.
|
|
428
|
2563 */
|
|
|
2564 (filename))
|
|
|
2565 {
|
|
|
2566 /* This function can GC. GC checked 1997.04.10. */
|
|
|
2567 Lisp_Object abspath;
|
|
|
2568 struct stat st;
|
|
|
2569 Lisp_Object handler;
|
|
|
2570 struct gcpro gcpro1;
|
|
|
2571
|
|
|
2572 GCPRO1 (current_buffer->directory);
|
|
|
2573 abspath = expand_and_dir_to_file (filename,
|
|
|
2574 current_buffer->directory);
|
|
|
2575 UNGCPRO;
|
|
|
2576
|
|
|
2577 /* If the file name has special constructs in it,
|
|
|
2578 call the corresponding file handler. */
|
|
|
2579 GCPRO1 (abspath);
|
|
|
2580 handler = Ffind_file_name_handler (abspath, Qfile_modes);
|
|
|
2581 UNGCPRO;
|
|
|
2582 if (!NILP (handler))
|
|
|
2583 return call2 (handler, Qfile_modes, abspath);
|
|
|
2584
|
|
771
|
2585 if (qxe_stat (XSTRING_DATA (abspath), &st) < 0)
|
|
428
|
2586 return Qnil;
|
|
|
2587 /* Syncing with FSF 19.34.6 note: not in FSF, #if 0'ed out here. */
|
|
|
2588 #if 0
|
|
442
|
2589 #ifdef WIN32_NATIVE
|
|
771
|
2590 if (check_executable (abspath))
|
|
428
|
2591 st.st_mode |= S_IEXEC;
|
|
442
|
2592 #endif /* WIN32_NATIVE */
|
|
428
|
2593 #endif /* 0 */
|
|
|
2594
|
|
|
2595 return make_int (st.st_mode & 07777);
|
|
|
2596 }
|
|
|
2597
|
|
|
2598 DEFUN ("set-file-modes", Fset_file_modes, 2, 2, 0, /*
|
|
444
|
2599 Set mode bits of file named FILENAME to MODE (an integer).
|
|
428
|
2600 Only the 12 low bits of MODE are used.
|
|
|
2601 */
|
|
|
2602 (filename, mode))
|
|
|
2603 {
|
|
|
2604 /* This function can GC. GC checked 1997.04.10. */
|
|
|
2605 Lisp_Object abspath;
|
|
|
2606 Lisp_Object handler;
|
|
|
2607 struct gcpro gcpro1;
|
|
|
2608
|
|
|
2609 GCPRO1 (current_buffer->directory);
|
|
|
2610 abspath = Fexpand_file_name (filename, current_buffer->directory);
|
|
|
2611 UNGCPRO;
|
|
|
2612
|
|
|
2613 CHECK_INT (mode);
|
|
|
2614
|
|
|
2615 /* If the file name has special constructs in it,
|
|
|
2616 call the corresponding file handler. */
|
|
|
2617 GCPRO1 (abspath);
|
|
|
2618 handler = Ffind_file_name_handler (abspath, Qset_file_modes);
|
|
|
2619 UNGCPRO;
|
|
|
2620 if (!NILP (handler))
|
|
|
2621 return call3 (handler, Qset_file_modes, abspath, mode);
|
|
|
2622
|
|
771
|
2623 if (qxe_chmod (XSTRING_DATA (abspath), XINT (mode)) < 0)
|
|
563
|
2624 report_file_error ("Doing chmod", abspath);
|
|
428
|
2625
|
|
|
2626 return Qnil;
|
|
|
2627 }
|
|
|
2628
|
|
|
2629 DEFUN ("set-default-file-modes", Fset_default_file_modes, 1, 1, 0, /*
|
|
|
2630 Set the file permission bits for newly created files.
|
|
444
|
2631 The argument MODE should be an integer; if a bit in MODE is 1,
|
|
|
2632 subsequently created files will not have the permission corresponding
|
|
|
2633 to that bit enabled. Only the low 9 bits are used.
|
|
428
|
2634 This setting is inherited by subprocesses.
|
|
|
2635 */
|
|
|
2636 (mode))
|
|
|
2637 {
|
|
|
2638 CHECK_INT (mode);
|
|
|
2639
|
|
|
2640 umask ((~ XINT (mode)) & 0777);
|
|
|
2641
|
|
|
2642 return Qnil;
|
|
|
2643 }
|
|
|
2644
|
|
|
2645 DEFUN ("default-file-modes", Fdefault_file_modes, 0, 0, 0, /*
|
|
|
2646 Return the default file protection for created files.
|
|
|
2647 The umask value determines which permissions are enabled in newly
|
|
|
2648 created files. If a permission's bit in the umask is 1, subsequently
|
|
|
2649 created files will not have that permission enabled.
|
|
|
2650 */
|
|
|
2651 ())
|
|
|
2652 {
|
|
|
2653 int mode;
|
|
|
2654
|
|
|
2655 mode = umask (0);
|
|
|
2656 umask (mode);
|
|
|
2657
|
|
|
2658 return make_int ((~ mode) & 0777);
|
|
|
2659 }
|
|
|
2660
|
|
|
2661 DEFUN ("unix-sync", Funix_sync, 0, 0, "", /*
|
|
|
2662 Tell Unix to finish all pending disk updates.
|
|
|
2663 */
|
|
|
2664 ())
|
|
|
2665 {
|
|
442
|
2666 #ifndef WIN32_NATIVE
|
|
428
|
2667 sync ();
|
|
|
2668 #endif
|
|
|
2669 return Qnil;
|
|
|
2670 }
|
|
|
2671
|
|
|
2672
|
|
|
2673 DEFUN ("file-newer-than-file-p", Ffile_newer_than_file_p, 2, 2, 0, /*
|
|
|
2674 Return t if file FILE1 is newer than file FILE2.
|
|
|
2675 If FILE1 does not exist, the answer is nil;
|
|
|
2676 otherwise, if FILE2 does not exist, the answer is t.
|
|
|
2677 */
|
|
|
2678 (file1, file2))
|
|
|
2679 {
|
|
|
2680 /* This function can GC. GC checked 1997.04.10. */
|
|
|
2681 Lisp_Object abspath1, abspath2;
|
|
|
2682 struct stat st;
|
|
|
2683 int mtime1;
|
|
|
2684 Lisp_Object handler;
|
|
|
2685 struct gcpro gcpro1, gcpro2, gcpro3;
|
|
|
2686
|
|
|
2687 CHECK_STRING (file1);
|
|
|
2688 CHECK_STRING (file2);
|
|
|
2689
|
|
|
2690 abspath1 = Qnil;
|
|
|
2691 abspath2 = Qnil;
|
|
|
2692
|
|
|
2693 GCPRO3 (abspath1, abspath2, current_buffer->directory);
|
|
|
2694 abspath1 = expand_and_dir_to_file (file1, current_buffer->directory);
|
|
|
2695 abspath2 = expand_and_dir_to_file (file2, current_buffer->directory);
|
|
|
2696
|
|
|
2697 /* If the file name has special constructs in it,
|
|
|
2698 call the corresponding file handler. */
|
|
|
2699 handler = Ffind_file_name_handler (abspath1, Qfile_newer_than_file_p);
|
|
|
2700 if (NILP (handler))
|
|
|
2701 handler = Ffind_file_name_handler (abspath2, Qfile_newer_than_file_p);
|
|
|
2702 UNGCPRO;
|
|
|
2703 if (!NILP (handler))
|
|
|
2704 return call3 (handler, Qfile_newer_than_file_p, abspath1,
|
|
|
2705 abspath2);
|
|
|
2706
|
|
771
|
2707 if (qxe_stat (XSTRING_DATA (abspath1), &st) < 0)
|
|
428
|
2708 return Qnil;
|
|
|
2709
|
|
|
2710 mtime1 = st.st_mtime;
|
|
|
2711
|
|
771
|
2712 if (qxe_stat (XSTRING_DATA (abspath2), &st) < 0)
|
|
428
|
2713 return Qt;
|
|
|
2714
|
|
|
2715 return (mtime1 > st.st_mtime) ? Qt : Qnil;
|
|
|
2716 }
|
|
|
2717
|
|
|
2718
|
|
|
2719 /* Stack sizes > 2**16 is a good way to elicit compiler bugs */
|
|
|
2720 /* #define READ_BUF_SIZE (2 << 16) */
|
|
|
2721 #define READ_BUF_SIZE (1 << 15)
|
|
|
2722
|
|
|
2723 DEFUN ("insert-file-contents-internal", Finsert_file_contents_internal,
|
|
|
2724 1, 7, 0, /*
|
|
|
2725 Insert contents of file FILENAME after point; no coding-system frobbing.
|
|
|
2726 This function is identical to `insert-file-contents' except for the
|
|
771
|
2727 handling of the CODESYS and USED-CODESYS arguments.
|
|
|
2728
|
|
|
2729 The file is decoded according to CODESYS; if omitted, no conversion
|
|
|
2730 happens. If USED-CODESYS is non-nil, it should be a symbol, and the actual
|
|
|
2731 coding system that was used for the decoding is stored into it. It will in
|
|
|
2732 general be different from CODESYS if CODESYS specifies automatic encoding
|
|
|
2733 detection or end-of-line detection.
|
|
428
|
2734
|
|
444
|
2735 Currently START and END refer to byte positions (as opposed to character
|
|
771
|
2736 positions), even in Mule and under MS Windows. (Fixing this, particularly
|
|
|
2737 under Mule, is very difficult.)
|
|
428
|
2738 */
|
|
444
|
2739 (filename, visit, start, end, replace, codesys, used_codesys))
|
|
428
|
2740 {
|
|
|
2741 /* This function can call lisp */
|
|
|
2742 struct stat st;
|
|
|
2743 int fd;
|
|
|
2744 int saverrno = 0;
|
|
|
2745 Charcount inserted = 0;
|
|
|
2746 int speccount;
|
|
|
2747 struct gcpro gcpro1, gcpro2, gcpro3, gcpro4, gcpro5;
|
|
|
2748 Lisp_Object handler = Qnil, val;
|
|
|
2749 int total;
|
|
867
|
2750 Ibyte read_buf[READ_BUF_SIZE];
|
|
428
|
2751 int mc_count;
|
|
|
2752 struct buffer *buf = current_buffer;
|
|
|
2753 Lisp_Object curbuf;
|
|
|
2754 int not_regular = 0;
|
|
771
|
2755 int do_speedy_insert =
|
|
|
2756 coding_system_is_binary (Fget_coding_system (codesys));
|
|
428
|
2757
|
|
|
2758 if (buf->base_buffer && ! NILP (visit))
|
|
563
|
2759 invalid_operation ("Cannot do file visiting in an indirect buffer", Qunbound);
|
|
428
|
2760
|
|
|
2761 /* No need to call Fbarf_if_buffer_read_only() here.
|
|
|
2762 That's called in begin_multiple_change() or wherever. */
|
|
|
2763
|
|
|
2764 val = Qnil;
|
|
|
2765
|
|
|
2766 /* #### dmoore - should probably check in various places to see if
|
|
|
2767 curbuf was killed and if so signal an error? */
|
|
|
2768
|
|
793
|
2769 curbuf = wrap_buffer (buf);
|
|
428
|
2770
|
|
|
2771 GCPRO5 (filename, val, visit, handler, curbuf);
|
|
|
2772
|
|
|
2773 mc_count = (NILP (replace)) ?
|
|
|
2774 begin_multiple_change (buf, BUF_PT (buf), BUF_PT (buf)) :
|
|
|
2775 begin_multiple_change (buf, BUF_BEG (buf), BUF_Z (buf));
|
|
|
2776
|
|
|
2777 speccount = specpdl_depth (); /* begin_multiple_change also adds
|
|
|
2778 an unwind_protect */
|
|
|
2779
|
|
|
2780 filename = Fexpand_file_name (filename, Qnil);
|
|
|
2781
|
|
|
2782 /* If the file name has special constructs in it,
|
|
|
2783 call the corresponding file handler. */
|
|
|
2784 handler = Ffind_file_name_handler (filename, Qinsert_file_contents);
|
|
|
2785 if (!NILP (handler))
|
|
|
2786 {
|
|
|
2787 val = call6 (handler, Qinsert_file_contents, filename,
|
|
444
|
2788 visit, start, end, replace);
|
|
428
|
2789 goto handled;
|
|
|
2790 }
|
|
|
2791
|
|
|
2792 if (!NILP (used_codesys))
|
|
|
2793 CHECK_SYMBOL (used_codesys);
|
|
|
2794
|
|
444
|
2795 if ( (!NILP (start) || !NILP (end)) && !NILP (visit) )
|
|
563
|
2796 invalid_operation ("Attempt to visit less than an entire file", Qunbound);
|
|
428
|
2797
|
|
|
2798 fd = -1;
|
|
|
2799
|
|
771
|
2800 if (qxe_stat (XSTRING_DATA (filename), &st) < 0)
|
|
428
|
2801 {
|
|
771
|
2802 if (fd >= 0) retry_close (fd);
|
|
428
|
2803 badopen:
|
|
|
2804 if (NILP (visit))
|
|
563
|
2805 report_file_error ("Opening input file", filename);
|
|
428
|
2806 st.st_mtime = -1;
|
|
|
2807 goto notfound;
|
|
|
2808 }
|
|
|
2809
|
|
|
2810 #ifdef S_IFREG
|
|
|
2811 /* Signal an error if we are accessing a non-regular file, with
|
|
444
|
2812 REPLACE, START or END being non-nil. */
|
|
428
|
2813 if (!S_ISREG (st.st_mode))
|
|
|
2814 {
|
|
|
2815 not_regular = 1;
|
|
|
2816
|
|
|
2817 if (!NILP (visit))
|
|
|
2818 goto notfound;
|
|
|
2819
|
|
444
|
2820 if (!NILP (replace) || !NILP (start) || !NILP (end))
|
|
428
|
2821 {
|
|
|
2822 end_multiple_change (buf, mc_count);
|
|
|
2823
|
|
444
|
2824 RETURN_UNGCPRO
|
|
|
2825 (Fsignal (Qfile_error,
|
|
771
|
2826 list2 (build_msg_string("not a regular file"),
|
|
444
|
2827 filename)));
|
|
428
|
2828 }
|
|
|
2829 }
|
|
|
2830 #endif /* S_IFREG */
|
|
|
2831
|
|
444
|
2832 if (!NILP (start))
|
|
|
2833 CHECK_INT (start);
|
|
428
|
2834 else
|
|
444
|
2835 start = Qzero;
|
|
428
|
2836
|
|
|
2837 if (!NILP (end))
|
|
|
2838 CHECK_INT (end);
|
|
|
2839
|
|
|
2840 if (fd < 0)
|
|
|
2841 {
|
|
771
|
2842 if ((fd = qxe_interruptible_open (XSTRING_DATA (filename),
|
|
|
2843 O_RDONLY | OPEN_BINARY, 0)) < 0)
|
|
428
|
2844 goto badopen;
|
|
|
2845 }
|
|
|
2846
|
|
|
2847 /* Replacement should preserve point as it preserves markers. */
|
|
|
2848 if (!NILP (replace))
|
|
|
2849 record_unwind_protect (restore_point_unwind, Fpoint_marker (Qnil, Qnil));
|
|
|
2850
|
|
|
2851 record_unwind_protect (close_file_unwind, make_int (fd));
|
|
|
2852
|
|
|
2853 /* Supposedly happens on VMS. */
|
|
|
2854 if (st.st_size < 0)
|
|
563
|
2855 signal_error (Qfile_error, "File size is negative", Qunbound);
|
|
428
|
2856
|
|
|
2857 if (NILP (end))
|
|
|
2858 {
|
|
|
2859 if (!not_regular)
|
|
|
2860 {
|
|
|
2861 end = make_int (st.st_size);
|
|
|
2862 if (XINT (end) != st.st_size)
|
|
563
|
2863 out_of_memory ("Maximum buffer size exceeded", Qunbound);
|
|
428
|
2864 }
|
|
|
2865 }
|
|
|
2866
|
|
|
2867 /* If requested, replace the accessible part of the buffer
|
|
|
2868 with the file contents. Avoid replacing text at the
|
|
|
2869 beginning or end of the buffer that matches the file contents;
|
|
771
|
2870 that preserves markers pointing to the unchanged parts. */
|
|
|
2871 /* The replace-mode code is currently implemented by comparing the
|
|
|
2872 file on disk with the contents in the buffer, character by character.
|
|
|
2873 That works only if the characters on disk are exactly what will go into
|
|
|
2874 the buffer -- i.e. `binary' conversion.
|
|
|
2875
|
|
|
2876 FSF tries to implement this in all situations, even the non-binary
|
|
|
2877 conversion, by (in that case) loading the whole converted file into a
|
|
|
2878 separate memory area, then doing the comparison. I really don't see
|
|
|
2879 the point of this, and it will fail spectacularly if the file is many
|
|
|
2880 megabytes in size. To try to get around this, we could certainly read
|
|
|
2881 from the beginning and decode as necessary before comparing, but doing
|
|
|
2882 the same at the end gets very difficult because of the possibility of
|
|
|
2883 modal coding systems -- trying to decode data from any point forward
|
|
|
2884 without decoding previous data might always give you different results
|
|
|
2885 from starting at the beginning. We could try further tricks like
|
|
|
2886 keeping track of which coding systems are non-modal and providing some
|
|
|
2887 extra method for such coding systems to be given a chunk of data that
|
|
|
2888 came from a specified location in a specified file and ask the coding
|
|
|
2889 systems to return a "sync point" from which the data can be read
|
|
|
2890 forward and have results guaranteed to be the same as reading from the
|
|
|
2891 beginning to that point, but I really don't think it's worth it. If
|
|
|
2892 we implemented the FSF "brute-force" method, we would have to put a
|
|
|
2893 reasonable maximum file size on the files. Is any of this worth it?
|
|
|
2894 --ben
|
|
|
2895
|
|
|
2896 */
|
|
|
2897
|
|
428
|
2898 if (!NILP (replace))
|
|
|
2899 {
|
|
771
|
2900 if (!do_speedy_insert)
|
|
|
2901 buffer_delete_range (buf, BUF_BEG (buf), BUF_Z (buf),
|
|
|
2902 !NILP (visit) ? INSDEL_NO_LOCKING : 0);
|
|
|
2903 else
|
|
428
|
2904 {
|
|
771
|
2905 char buffer[1 << 14];
|
|
|
2906 Charbpos same_at_start = BUF_BEGV (buf);
|
|
|
2907 Charbpos same_at_end = BUF_ZV (buf);
|
|
|
2908 int overlap;
|
|
|
2909
|
|
|
2910 /* Count how many chars at the start of the file
|
|
|
2911 match the text at the beginning of the buffer. */
|
|
|
2912 while (1)
|
|
|
2913 {
|
|
|
2914 int nread;
|
|
|
2915 Charbpos charbpos;
|
|
|
2916 nread = read_allowing_quit (fd, buffer, sizeof (buffer));
|
|
|
2917 if (nread < 0)
|
|
|
2918 report_file_error ("Reading", filename);
|
|
|
2919 else if (nread == 0)
|
|
|
2920 break;
|
|
|
2921 charbpos = 0;
|
|
|
2922 while (charbpos < nread && same_at_start < BUF_ZV (buf)
|
|
814
|
2923 && BUF_FETCH_CHAR (buf, same_at_start) ==
|
|
|
2924 buffer[charbpos])
|
|
771
|
2925 same_at_start++, charbpos++;
|
|
|
2926 /* If we found a discrepancy, stop the scan.
|
|
|
2927 Otherwise loop around and scan the next bufferful. */
|
|
|
2928 if (charbpos != nread)
|
|
|
2929 break;
|
|
|
2930 }
|
|
|
2931 /* If the file matches the buffer completely,
|
|
|
2932 there's no need to replace anything. */
|
|
|
2933 if (same_at_start - BUF_BEGV (buf) == st.st_size)
|
|
|
2934 {
|
|
|
2935 retry_close (fd);
|
|
|
2936 unbind_to (speccount);
|
|
|
2937 /* Truncate the buffer to the size of the file. */
|
|
|
2938 buffer_delete_range (buf, same_at_start, same_at_end,
|
|
|
2939 !NILP (visit) ? INSDEL_NO_LOCKING : 0);
|
|
|
2940 goto handled;
|
|
|
2941 }
|
|
|
2942 /* Count how many chars at the end of the file
|
|
|
2943 match the text at the end of the buffer. */
|
|
|
2944 while (1)
|
|
|
2945 {
|
|
|
2946 int total_read, nread;
|
|
814
|
2947 Charcount charbpos, curpos, trial;
|
|
771
|
2948
|
|
|
2949 /* At what file position are we now scanning? */
|
|
|
2950 curpos = st.st_size - (BUF_ZV (buf) - same_at_end);
|
|
|
2951 /* If the entire file matches the buffer tail, stop the scan. */
|
|
|
2952 if (curpos == 0)
|
|
|
2953 break;
|
|
|
2954 /* How much can we scan in the next step? */
|
|
|
2955 trial = min (curpos, (Charbpos) sizeof (buffer));
|
|
|
2956 if (lseek (fd, curpos - trial, 0) < 0)
|
|
|
2957 report_file_error ("Setting file position", filename);
|
|
|
2958
|
|
|
2959 total_read = 0;
|
|
|
2960 while (total_read < trial)
|
|
|
2961 {
|
|
|
2962 nread = read_allowing_quit (fd, buffer + total_read,
|
|
|
2963 trial - total_read);
|
|
|
2964 if (nread <= 0)
|
|
|
2965 report_file_error ("IO error reading file", filename);
|
|
|
2966 total_read += nread;
|
|
|
2967 }
|
|
|
2968 /* Scan this bufferful from the end, comparing with
|
|
|
2969 the Emacs buffer. */
|
|
|
2970 charbpos = total_read;
|
|
|
2971 /* Compare with same_at_start to avoid counting some buffer text
|
|
|
2972 as matching both at the file's beginning and at the end. */
|
|
|
2973 while (charbpos > 0 && same_at_end > same_at_start
|
|
|
2974 && BUF_FETCH_CHAR (buf, same_at_end - 1) ==
|
|
|
2975 buffer[charbpos - 1])
|
|
|
2976 same_at_end--, charbpos--;
|
|
|
2977 /* If we found a discrepancy, stop the scan.
|
|
|
2978 Otherwise loop around and scan the preceding bufferful. */
|
|
|
2979 if (charbpos != 0)
|
|
|
2980 break;
|
|
|
2981 /* If display current starts at beginning of line,
|
|
|
2982 keep it that way. */
|
|
|
2983 if (XBUFFER (XWINDOW (Fselected_window (Qnil))->buffer) == buf)
|
|
|
2984 XWINDOW (Fselected_window (Qnil))->start_at_line_beg =
|
|
|
2985 !NILP (Fbolp (wrap_buffer (buf)));
|
|
|
2986 }
|
|
|
2987
|
|
|
2988 /* Don't try to reuse the same piece of text twice. */
|
|
|
2989 overlap = same_at_start - BUF_BEGV (buf) -
|
|
|
2990 (same_at_end + st.st_size - BUF_ZV (buf));
|
|
|
2991 if (overlap > 0)
|
|
|
2992 same_at_end += overlap;
|
|
|
2993
|
|
|
2994 /* Arrange to read only the nonmatching middle part of the file. */
|
|
|
2995 start = make_int (same_at_start - BUF_BEGV (buf));
|
|
|
2996 end = make_int (st.st_size - (BUF_ZV (buf) - same_at_end));
|
|
|
2997
|
|
428
|
2998 buffer_delete_range (buf, same_at_start, same_at_end,
|
|
|
2999 !NILP (visit) ? INSDEL_NO_LOCKING : 0);
|
|
771
|
3000 /* Insert from the file at the proper position. */
|
|
|
3001 BUF_SET_PT (buf, same_at_start);
|
|
428
|
3002 }
|
|
|
3003 }
|
|
|
3004
|
|
|
3005 if (!not_regular)
|
|
|
3006 {
|
|
444
|
3007 total = XINT (end) - XINT (start);
|
|
428
|
3008
|
|
|
3009 /* Make sure point-max won't overflow after this insertion. */
|
|
|
3010 if (total != XINT (make_int (total)))
|
|
563
|
3011 out_of_memory ("Maximum buffer size exceeded", Qunbound);
|
|
428
|
3012 }
|
|
|
3013 else
|
|
|
3014 /* For a special file, all we can do is guess. The value of -1
|
|
|
3015 will make the stream functions read as much as possible. */
|
|
|
3016 total = -1;
|
|
|
3017
|
|
444
|
3018 if (XINT (start) != 0
|
|
428
|
3019 /* why was this here? asked jwz. The reason is that the replace-mode
|
|
|
3020 connivings above will normally put the file pointer other than
|
|
|
3021 where it should be. */
|
|
771
|
3022 || (!NILP (replace) && do_speedy_insert))
|
|
428
|
3023 {
|
|
444
|
3024 if (lseek (fd, XINT (start), 0) < 0)
|
|
563
|
3025 report_file_error ("Setting file position", filename);
|
|
428
|
3026 }
|
|
|
3027
|
|
|
3028 {
|
|
665
|
3029 Charbpos cur_point = BUF_PT (buf);
|
|
428
|
3030 struct gcpro ngcpro1;
|
|
|
3031 Lisp_Object stream = make_filedesc_input_stream (fd, 0, total,
|
|
|
3032 LSTR_ALLOW_QUIT);
|
|
|
3033
|
|
|
3034 NGCPRO1 (stream);
|
|
|
3035 Lstream_set_buffering (XLSTREAM (stream), LSTREAM_BLOCKN_BUFFERED, 65536);
|
|
771
|
3036 stream = make_coding_input_stream
|
|
|
3037 (XLSTREAM (stream), get_coding_system_for_text_file (codesys, 1),
|
|
800
|
3038 CODING_DECODE, 0);
|
|
428
|
3039 Lstream_set_buffering (XLSTREAM (stream), LSTREAM_BLOCKN_BUFFERED, 65536);
|
|
|
3040
|
|
|
3041 record_unwind_protect (delete_stream_unwind, stream);
|
|
|
3042
|
|
|
3043 /* No need to limit the amount of stuff we attempt to read. (It would
|
|
|
3044 be incorrect, anyway, when Mule is enabled.) Instead, the limiting
|
|
|
3045 occurs inside of the filedesc stream. */
|
|
|
3046 while (1)
|
|
|
3047 {
|
|
665
|
3048 Bytecount this_len;
|
|
428
|
3049 Charcount cc_inserted;
|
|
|
3050
|
|
|
3051 QUIT;
|
|
|
3052 this_len = Lstream_read (XLSTREAM (stream), read_buf,
|
|
|
3053 sizeof (read_buf));
|
|
|
3054
|
|
|
3055 if (this_len <= 0)
|
|
|
3056 {
|
|
|
3057 if (this_len < 0)
|
|
|
3058 saverrno = errno;
|
|
|
3059 break;
|
|
|
3060 }
|
|
|
3061
|
|
|
3062 cc_inserted = buffer_insert_raw_string_1 (buf, cur_point, read_buf,
|
|
|
3063 this_len,
|
|
|
3064 !NILP (visit)
|
|
|
3065 ? INSDEL_NO_LOCKING : 0);
|
|
|
3066 inserted += cc_inserted;
|
|
|
3067 cur_point += cc_inserted;
|
|
|
3068 }
|
|
|
3069 if (!NILP (used_codesys))
|
|
|
3070 {
|
|
|
3071 Fset (used_codesys,
|
|
771
|
3072 XCODING_SYSTEM_NAME
|
|
|
3073 (coding_stream_detected_coding_system (XLSTREAM (stream))));
|
|
428
|
3074 }
|
|
|
3075 NUNGCPRO;
|
|
|
3076 }
|
|
|
3077
|
|
|
3078 /* Close the file/stream */
|
|
771
|
3079 unbind_to (speccount);
|
|
428
|
3080
|
|
|
3081 if (saverrno != 0)
|
|
|
3082 {
|
|
563
|
3083 errno = saverrno;
|
|
|
3084 report_file_error ("Reading", filename);
|
|
428
|
3085 }
|
|
|
3086
|
|
|
3087 notfound:
|
|
|
3088 handled:
|
|
|
3089
|
|
|
3090 end_multiple_change (buf, mc_count);
|
|
|
3091
|
|
|
3092 if (!NILP (visit))
|
|
|
3093 {
|
|
|
3094 if (!EQ (buf->undo_list, Qt))
|
|
|
3095 buf->undo_list = Qnil;
|
|
|
3096 if (NILP (handler))
|
|
|
3097 {
|
|
|
3098 buf->modtime = st.st_mtime;
|
|
|
3099 buf->filename = filename;
|
|
|
3100 /* XEmacs addition: */
|
|
|
3101 /* This function used to be in C, ostensibly so that
|
|
|
3102 it could be called here. But that's just silly.
|
|
|
3103 There's no reason C code can't call out to Lisp
|
|
|
3104 code, and it's a lot cleaner this way. */
|
|
444
|
3105 /* Note: compute-buffer-file-truename is called for
|
|
|
3106 side-effect! Its return value is intentionally
|
|
|
3107 ignored. */
|
|
428
|
3108 if (!NILP (Ffboundp (Qcompute_buffer_file_truename)))
|
|
771
|
3109 call1 (Qcompute_buffer_file_truename, wrap_buffer (buf));
|
|
428
|
3110 }
|
|
|
3111 BUF_SAVE_MODIFF (buf) = BUF_MODIFF (buf);
|
|
|
3112 buf->auto_save_modified = BUF_MODIFF (buf);
|
|
|
3113 buf->saved_size = make_int (BUF_SIZE (buf));
|
|
|
3114 #ifdef CLASH_DETECTION
|
|
|
3115 if (NILP (handler))
|
|
|
3116 {
|
|
|
3117 if (!NILP (buf->file_truename))
|
|
|
3118 unlock_file (buf->file_truename);
|
|
|
3119 unlock_file (filename);
|
|
|
3120 }
|
|
|
3121 #endif /* CLASH_DETECTION */
|
|
|
3122 if (not_regular)
|
|
|
3123 RETURN_UNGCPRO (Fsignal (Qfile_error,
|
|
771
|
3124 list2 (build_msg_string ("not a regular file"),
|
|
428
|
3125 filename)));
|
|
|
3126
|
|
|
3127 /* If visiting nonexistent file, return nil. */
|
|
|
3128 if (buf->modtime == -1)
|
|
|
3129 report_file_error ("Opening input file",
|
|
563
|
3130 filename);
|
|
428
|
3131 }
|
|
|
3132
|
|
|
3133 /* Decode file format */
|
|
|
3134 if (inserted > 0)
|
|
|
3135 {
|
|
|
3136 Lisp_Object insval = call3 (Qformat_decode,
|
|
|
3137 Qnil, make_int (inserted), visit);
|
|
|
3138 CHECK_INT (insval);
|
|
|
3139 inserted = XINT (insval);
|
|
|
3140 }
|
|
|
3141
|
|
|
3142 if (inserted > 0)
|
|
|
3143 {
|
|
|
3144 Lisp_Object p;
|
|
|
3145 struct gcpro ngcpro1;
|
|
|
3146
|
|
|
3147 NGCPRO1 (p);
|
|
|
3148 EXTERNAL_LIST_LOOP (p, Vafter_insert_file_functions)
|
|
|
3149 {
|
|
|
3150 Lisp_Object insval =
|
|
|
3151 call1 (XCAR (p), make_int (inserted));
|
|
|
3152 if (!NILP (insval))
|
|
|
3153 {
|
|
|
3154 CHECK_NATNUM (insval);
|
|
|
3155 inserted = XINT (insval);
|
|
|
3156 }
|
|
|
3157 QUIT;
|
|
|
3158 }
|
|
|
3159 NUNGCPRO;
|
|
|
3160 }
|
|
|
3161
|
|
|
3162 UNGCPRO;
|
|
|
3163
|
|
|
3164 if (!NILP (val))
|
|
|
3165 return (val);
|
|
|
3166 else
|
|
|
3167 return (list2 (filename, make_int (inserted)));
|
|
|
3168 }
|
|
|
3169
|
|
|
3170
|
|
|
3171 static int a_write (Lisp_Object outstream, Lisp_Object instream, int pos,
|
|
|
3172 Lisp_Object *annot);
|
|
|
3173 static Lisp_Object build_annotations (Lisp_Object start, Lisp_Object end);
|
|
|
3174
|
|
|
3175 /* If build_annotations switched buffers, switch back to BUF.
|
|
|
3176 Kill the temporary buffer that was selected in the meantime. */
|
|
|
3177
|
|
|
3178 static Lisp_Object
|
|
|
3179 build_annotations_unwind (Lisp_Object buf)
|
|
|
3180 {
|
|
|
3181 Lisp_Object tembuf;
|
|
|
3182
|
|
|
3183 if (XBUFFER (buf) == current_buffer)
|
|
|
3184 return Qnil;
|
|
|
3185 tembuf = Fcurrent_buffer ();
|
|
|
3186 Fset_buffer (buf);
|
|
|
3187 Fkill_buffer (tembuf);
|
|
|
3188 return Qnil;
|
|
|
3189 }
|
|
|
3190
|
|
|
3191 DEFUN ("write-region-internal", Fwrite_region_internal, 3, 7,
|
|
|
3192 "r\nFWrite region to file: ", /*
|
|
|
3193 Write current region into specified file; no coding-system frobbing.
|
|
|
3194 This function is identical to `write-region' except for the handling
|
|
|
3195 of the CODESYS argument under XEmacs/Mule. (When Mule support is not
|
|
|
3196 present, both functions are identical and ignore the CODESYS argument.)
|
|
|
3197 If support for Mule exists in this Emacs, the file is encoded according
|
|
|
3198 to the value of CODESYS. If this is nil, no code conversion occurs.
|
|
764
|
3199
|
|
|
3200 As a special kludge to support auto-saving, when START is nil START and
|
|
|
3201 END are set to the beginning and end, respectively, of the buffer,
|
|
|
3202 regardless of any restrictions. Don't use this feature. It is documented
|
|
|
3203 here because write-region handler writers need to be aware of it.
|
|
428
|
3204 */
|
|
|
3205 (start, end, filename, append, visit, lockname, codesys))
|
|
|
3206 {
|
|
442
|
3207 /* This function can call lisp. GC checked 2000-07-28 ben */
|
|
428
|
3208 int desc;
|
|
|
3209 int failure;
|
|
|
3210 int save_errno = 0;
|
|
|
3211 struct stat st;
|
|
442
|
3212 Lisp_Object fn = Qnil;
|
|
428
|
3213 int speccount = specpdl_depth ();
|
|
|
3214 int visiting_other = STRINGP (visit);
|
|
|
3215 int visiting = (EQ (visit, Qt) || visiting_other);
|
|
|
3216 int quietly = (!visiting && !NILP (visit));
|
|
|
3217 Lisp_Object visit_file = Qnil;
|
|
|
3218 Lisp_Object annotations = Qnil;
|
|
|
3219 struct buffer *given_buffer;
|
|
665
|
3220 Charbpos start1, end1;
|
|
442
|
3221 struct gcpro gcpro1, gcpro2, gcpro3, gcpro4, gcpro5;
|
|
|
3222 struct gcpro ngcpro1, ngcpro2;
|
|
793
|
3223 Lisp_Object curbuf = wrap_buffer (current_buffer);
|
|
|
3224
|
|
442
|
3225
|
|
|
3226 /* start, end, visit, and append are never modified in this fun
|
|
|
3227 so we don't protect them. */
|
|
|
3228 GCPRO5 (visit_file, filename, codesys, lockname, annotations);
|
|
|
3229 NGCPRO2 (curbuf, fn);
|
|
|
3230
|
|
|
3231 /* [[ dmoore - if Fexpand_file_name or handlers kill the buffer,
|
|
428
|
3232 we should signal an error rather than blissfully continuing
|
|
|
3233 along. ARGH, this function is going to lose lose lose. We need
|
|
|
3234 to protect the current_buffer from being destroyed, but the
|
|
442
|
3235 multiple return points make this a pain in the butt. ]] we do
|
|
|
3236 protect curbuf now. --ben */
|
|
428
|
3237
|
|
771
|
3238 codesys = get_coding_system_for_text_file (codesys, 0);
|
|
428
|
3239
|
|
|
3240 if (current_buffer->base_buffer && ! NILP (visit))
|
|
442
|
3241 invalid_operation ("Cannot do file visiting in an indirect buffer",
|
|
|
3242 curbuf);
|
|
428
|
3243
|
|
|
3244 if (!NILP (start) && !STRINGP (start))
|
|
|
3245 get_buffer_range_char (current_buffer, start, end, &start1, &end1, 0);
|
|
|
3246
|
|
|
3247 {
|
|
|
3248 Lisp_Object handler;
|
|
|
3249
|
|
|
3250 if (visiting_other)
|
|
|
3251 visit_file = Fexpand_file_name (visit, Qnil);
|
|
|
3252 else
|
|
|
3253 visit_file = filename;
|
|
|
3254 filename = Fexpand_file_name (filename, Qnil);
|
|
|
3255
|
|
|
3256 if (NILP (lockname))
|
|
|
3257 lockname = visit_file;
|
|
|
3258
|
|
442
|
3259 /* We used to UNGCPRO here. BAD! visit_file is used below after
|
|
|
3260 more Lisp calling. */
|
|
428
|
3261 /* If the file name has special constructs in it,
|
|
|
3262 call the corresponding file handler. */
|
|
|
3263 handler = Ffind_file_name_handler (filename, Qwrite_region);
|
|
|
3264 /* If FILENAME has no handler, see if VISIT has one. */
|
|
|
3265 if (NILP (handler) && STRINGP (visit))
|
|
|
3266 handler = Ffind_file_name_handler (visit, Qwrite_region);
|
|
|
3267
|
|
|
3268 if (!NILP (handler))
|
|
|
3269 {
|
|
|
3270 Lisp_Object val = call8 (handler, Qwrite_region, start, end,
|
|
|
3271 filename, append, visit, lockname, codesys);
|
|
|
3272 if (visiting)
|
|
|
3273 {
|
|
|
3274 BUF_SAVE_MODIFF (current_buffer) = BUF_MODIFF (current_buffer);
|
|
|
3275 current_buffer->saved_size = make_int (BUF_SIZE (current_buffer));
|
|
|
3276 current_buffer->filename = visit_file;
|
|
|
3277 MARK_MODELINE_CHANGED;
|
|
|
3278 }
|
|
442
|
3279 NUNGCPRO;
|
|
|
3280 UNGCPRO;
|
|
428
|
3281 return val;
|
|
|
3282 }
|
|
|
3283 }
|
|
|
3284
|
|
|
3285 #ifdef CLASH_DETECTION
|
|
|
3286 if (!auto_saving)
|
|
442
|
3287 lock_file (lockname);
|
|
428
|
3288 #endif /* CLASH_DETECTION */
|
|
|
3289
|
|
|
3290 /* Special kludge to simplify auto-saving. */
|
|
|
3291 if (NILP (start))
|
|
|
3292 {
|
|
|
3293 start1 = BUF_BEG (current_buffer);
|
|
|
3294 end1 = BUF_Z (current_buffer);
|
|
|
3295 }
|
|
|
3296
|
|
|
3297 record_unwind_protect (build_annotations_unwind, Fcurrent_buffer ());
|
|
|
3298
|
|
|
3299 given_buffer = current_buffer;
|
|
|
3300 annotations = build_annotations (start, end);
|
|
|
3301 if (current_buffer != given_buffer)
|
|
|
3302 {
|
|
|
3303 start1 = BUF_BEGV (current_buffer);
|
|
|
3304 end1 = BUF_ZV (current_buffer);
|
|
|
3305 }
|
|
|
3306
|
|
|
3307 fn = filename;
|
|
|
3308 desc = -1;
|
|
|
3309 if (!NILP (append))
|
|
|
3310 {
|
|
771
|
3311 desc = qxe_open (XSTRING_DATA (fn), O_WRONLY | OPEN_BINARY, 0);
|
|
428
|
3312 }
|
|
|
3313 if (desc < 0)
|
|
|
3314 {
|
|
771
|
3315 desc = qxe_open (XSTRING_DATA (fn),
|
|
|
3316 O_WRONLY | O_TRUNC | O_CREAT | OPEN_BINARY,
|
|
|
3317 auto_saving ? auto_save_mode_bits : CREAT_MODE);
|
|
428
|
3318 }
|
|
|
3319
|
|
|
3320 if (desc < 0)
|
|
|
3321 {
|
|
|
3322 #ifdef CLASH_DETECTION
|
|
|
3323 save_errno = errno;
|
|
|
3324 if (!auto_saving) unlock_file (lockname);
|
|
|
3325 errno = save_errno;
|
|
|
3326 #endif /* CLASH_DETECTION */
|
|
563
|
3327 report_file_error ("Opening output file", filename);
|
|
428
|
3328 }
|
|
|
3329
|
|
|
3330 {
|
|
|
3331 Lisp_Object desc_locative = Fcons (make_int (desc), Qnil);
|
|
|
3332 Lisp_Object instream = Qnil, outstream = Qnil;
|
|
442
|
3333 struct gcpro nngcpro1, nngcpro2;
|
|
771
|
3334 /* need to gcpro; QUIT could happen out of call to retry_write() */
|
|
442
|
3335 NNGCPRO2 (instream, outstream);
|
|
428
|
3336
|
|
|
3337 record_unwind_protect (close_file_unwind, desc_locative);
|
|
|
3338
|
|
|
3339 if (!NILP (append))
|
|
|
3340 {
|
|
|
3341 if (lseek (desc, 0, 2) < 0)
|
|
|
3342 {
|
|
|
3343 #ifdef CLASH_DETECTION
|
|
|
3344 if (!auto_saving) unlock_file (lockname);
|
|
|
3345 #endif /* CLASH_DETECTION */
|
|
|
3346 report_file_error ("Lseek error",
|
|
563
|
3347 filename);
|
|
428
|
3348 }
|
|
|
3349 }
|
|
|
3350
|
|
|
3351 failure = 0;
|
|
|
3352
|
|
|
3353 /* Note: I tried increasing the buffering size, along with
|
|
|
3354 various other tricks, but nothing seemed to make much of
|
|
|
3355 a difference in the time it took to save a large file.
|
|
|
3356 (Actually that's not true. With a local disk, changing
|
|
|
3357 the buffer size doesn't seem to make much difference.
|
|
|
3358 With an NFS-mounted disk, it could make a lot of difference
|
|
|
3359 because you're affecting the number of network requests
|
|
|
3360 that need to be made, and there could be a large latency
|
|
|
3361 for each request. So I've increased the buffer size
|
|
|
3362 to 64K.) */
|
|
|
3363 outstream = make_filedesc_output_stream (desc, 0, -1, 0);
|
|
|
3364 Lstream_set_buffering (XLSTREAM (outstream),
|
|
|
3365 LSTREAM_BLOCKN_BUFFERED, 65536);
|
|
|
3366 outstream =
|
|
800
|
3367 make_coding_output_stream (XLSTREAM (outstream), codesys,
|
|
|
3368 CODING_ENCODE, 0);
|
|
428
|
3369 Lstream_set_buffering (XLSTREAM (outstream),
|
|
|
3370 LSTREAM_BLOCKN_BUFFERED, 65536);
|
|
|
3371 if (STRINGP (start))
|
|
|
3372 {
|
|
|
3373 instream = make_lisp_string_input_stream (start, 0, -1);
|
|
|
3374 start1 = 0;
|
|
|
3375 }
|
|
|
3376 else
|
|
|
3377 instream = make_lisp_buffer_input_stream (current_buffer, start1, end1,
|
|
|
3378 LSTR_SELECTIVE |
|
|
|
3379 LSTR_IGNORE_ACCESSIBLE);
|
|
|
3380 failure = (0 > (a_write (outstream, instream, start1,
|
|
|
3381 &annotations)));
|
|
|
3382 save_errno = errno;
|
|
|
3383 /* Note that this doesn't close the desc since we created the
|
|
|
3384 stream without the LSTR_CLOSING flag, but it does
|
|
|
3385 flush out any buffered data. */
|
|
|
3386 if (Lstream_close (XLSTREAM (outstream)) < 0)
|
|
|
3387 {
|
|
|
3388 failure = 1;
|
|
|
3389 save_errno = errno;
|
|
|
3390 }
|
|
|
3391 Lstream_close (XLSTREAM (instream));
|
|
|
3392
|
|
|
3393 #ifdef HAVE_FSYNC
|
|
|
3394 /* Note fsync appears to change the modtime on BSD4.2 (both vax and sun).
|
|
|
3395 Disk full in NFS may be reported here. */
|
|
|
3396 /* mib says that closing the file will try to write as fast as NFS can do
|
|
|
3397 it, and that means the fsync here is not crucial for autosave files. */
|
|
|
3398 if (!auto_saving && fsync (desc) < 0
|
|
|
3399 /* If fsync fails with EINTR, don't treat that as serious. */
|
|
|
3400 && errno != EINTR)
|
|
|
3401 {
|
|
|
3402 failure = 1;
|
|
|
3403 save_errno = errno;
|
|
|
3404 }
|
|
|
3405 #endif /* HAVE_FSYNC */
|
|
|
3406
|
|
440
|
3407 /* Spurious "file has changed on disk" warnings used to be seen on
|
|
|
3408 systems where close() can change the modtime. This is known to
|
|
|
3409 happen on various NFS file systems, on Windows, and on Linux.
|
|
|
3410 Rather than handling this on a per-system basis, we
|
|
771
|
3411 unconditionally do the qxe_stat() after the retry_close(). */
|
|
428
|
3412
|
|
|
3413 /* NFS can report a write failure now. */
|
|
771
|
3414 if (retry_close (desc) < 0)
|
|
428
|
3415 {
|
|
|
3416 failure = 1;
|
|
|
3417 save_errno = errno;
|
|
|
3418 }
|
|
|
3419
|
|
|
3420 /* Discard the close unwind-protect. Execute the one for
|
|
|
3421 build_annotations (switches back to the original current buffer
|
|
|
3422 as necessary). */
|
|
|
3423 XCAR (desc_locative) = Qnil;
|
|
771
|
3424 unbind_to (speccount);
|
|
442
|
3425
|
|
|
3426 NNUNGCPRO;
|
|
428
|
3427 }
|
|
|
3428
|
|
771
|
3429 qxe_stat (XSTRING_DATA (fn), &st);
|
|
428
|
3430
|
|
|
3431 #ifdef CLASH_DETECTION
|
|
|
3432 if (!auto_saving)
|
|
|
3433 unlock_file (lockname);
|
|
|
3434 #endif /* CLASH_DETECTION */
|
|
|
3435
|
|
|
3436 /* Do this before reporting IO error
|
|
|
3437 to avoid a "file has changed on disk" warning on
|
|
|
3438 next attempt to save. */
|
|
|
3439 if (visiting)
|
|
|
3440 current_buffer->modtime = st.st_mtime;
|
|
|
3441
|
|
|
3442 if (failure)
|
|
442
|
3443 {
|
|
|
3444 errno = save_errno;
|
|
563
|
3445 report_file_error ("Writing file", fn);
|
|
442
|
3446 }
|
|
428
|
3447
|
|
|
3448 if (visiting)
|
|
|
3449 {
|
|
|
3450 BUF_SAVE_MODIFF (current_buffer) = BUF_MODIFF (current_buffer);
|
|
|
3451 current_buffer->saved_size = make_int (BUF_SIZE (current_buffer));
|
|
|
3452 current_buffer->filename = visit_file;
|
|
|
3453 MARK_MODELINE_CHANGED;
|
|
|
3454 }
|
|
|
3455 else if (quietly)
|
|
|
3456 {
|
|
442
|
3457 NUNGCPRO;
|
|
|
3458 UNGCPRO;
|
|
428
|
3459 return Qnil;
|
|
|
3460 }
|
|
|
3461
|
|
|
3462 if (!auto_saving)
|
|
|
3463 {
|
|
|
3464 if (visiting_other)
|
|
|
3465 message ("Wrote %s", XSTRING_DATA (visit_file));
|
|
|
3466 else
|
|
|
3467 {
|
|
446
|
3468 Lisp_Object fsp = Qnil;
|
|
442
|
3469 struct gcpro nngcpro1;
|
|
|
3470
|
|
|
3471 NNGCPRO1 (fsp);
|
|
428
|
3472 fsp = Ffile_symlink_p (fn);
|
|
|
3473 if (NILP (fsp))
|
|
|
3474 message ("Wrote %s", XSTRING_DATA (fn));
|
|
|
3475 else
|
|
|
3476 message ("Wrote %s (symlink to %s)",
|
|
|
3477 XSTRING_DATA (fn), XSTRING_DATA (fsp));
|
|
442
|
3478 NNUNGCPRO;
|
|
428
|
3479 }
|
|
|
3480 }
|
|
442
|
3481 NUNGCPRO;
|
|
|
3482 UNGCPRO;
|
|
428
|
3483 return Qnil;
|
|
|
3484 }
|
|
|
3485
|
|
|
3486 /* #### This is such a load of shit!!!! There is no way we should define
|
|
|
3487 something so stupid as a subr, just sort the fucking list more
|
|
|
3488 intelligently. */
|
|
|
3489 DEFUN ("car-less-than-car", Fcar_less_than_car, 2, 2, 0, /*
|
|
|
3490 Return t if (car A) is numerically less than (car B).
|
|
|
3491 */
|
|
|
3492 (a, b))
|
|
|
3493 {
|
|
|
3494 Lisp_Object objs[2];
|
|
|
3495 objs[0] = Fcar (a);
|
|
|
3496 objs[1] = Fcar (b);
|
|
|
3497 return Flss (2, objs);
|
|
|
3498 }
|
|
|
3499
|
|
|
3500 /* Heh heh heh, let's define this too, just to aggravate the person who
|
|
|
3501 wrote the above comment. */
|
|
|
3502 DEFUN ("cdr-less-than-cdr", Fcdr_less_than_cdr, 2, 2, 0, /*
|
|
|
3503 Return t if (cdr A) is numerically less than (cdr B).
|
|
|
3504 */
|
|
|
3505 (a, b))
|
|
|
3506 {
|
|
|
3507 Lisp_Object objs[2];
|
|
|
3508 objs[0] = Fcdr (a);
|
|
|
3509 objs[1] = Fcdr (b);
|
|
|
3510 return Flss (2, objs);
|
|
|
3511 }
|
|
|
3512
|
|
|
3513 /* Build the complete list of annotations appropriate for writing out
|
|
|
3514 the text between START and END, by calling all the functions in
|
|
|
3515 write-region-annotate-functions and merging the lists they return.
|
|
|
3516 If one of these functions switches to a different buffer, we assume
|
|
|
3517 that buffer contains altered text. Therefore, the caller must
|
|
|
3518 make sure to restore the current buffer in all cases,
|
|
|
3519 as save-excursion would do. */
|
|
|
3520
|
|
|
3521 static Lisp_Object
|
|
|
3522 build_annotations (Lisp_Object start, Lisp_Object end)
|
|
|
3523 {
|
|
|
3524 /* This function can GC */
|
|
|
3525 Lisp_Object annotations;
|
|
|
3526 Lisp_Object p, res;
|
|
|
3527 struct gcpro gcpro1, gcpro2;
|
|
793
|
3528 Lisp_Object original_buffer = wrap_buffer (current_buffer);
|
|
|
3529
|
|
428
|
3530
|
|
|
3531 annotations = Qnil;
|
|
|
3532 p = Vwrite_region_annotate_functions;
|
|
|
3533 GCPRO2 (annotations, p);
|
|
|
3534 while (!NILP (p))
|
|
|
3535 {
|
|
|
3536 struct buffer *given_buffer = current_buffer;
|
|
|
3537 Vwrite_region_annotations_so_far = annotations;
|
|
|
3538 res = call2 (Fcar (p), start, end);
|
|
|
3539 /* If the function makes a different buffer current,
|
|
|
3540 assume that means this buffer contains altered text to be output.
|
|
|
3541 Reset START and END from the buffer bounds
|
|
|
3542 and discard all previous annotations because they should have
|
|
|
3543 been dealt with by this function. */
|
|
|
3544 if (current_buffer != given_buffer)
|
|
|
3545 {
|
|
|
3546 start = make_int (BUF_BEGV (current_buffer));
|
|
|
3547 end = make_int (BUF_ZV (current_buffer));
|
|
|
3548 annotations = Qnil;
|
|
|
3549 }
|
|
|
3550 Flength (res); /* Check basic validity of return value */
|
|
|
3551 annotations = merge (annotations, res, Qcar_less_than_car);
|
|
|
3552 p = Fcdr (p);
|
|
|
3553 }
|
|
|
3554
|
|
|
3555 /* Now do the same for annotation functions implied by the file-format */
|
|
|
3556 if (auto_saving && (!EQ (Vauto_save_file_format, Qt)))
|
|
|
3557 p = Vauto_save_file_format;
|
|
|
3558 else
|
|
|
3559 p = current_buffer->file_format;
|
|
|
3560 while (!NILP (p))
|
|
|
3561 {
|
|
|
3562 struct buffer *given_buffer = current_buffer;
|
|
|
3563 Vwrite_region_annotations_so_far = annotations;
|
|
|
3564 res = call4 (Qformat_annotate_function, Fcar (p), start, end,
|
|
|
3565 original_buffer);
|
|
|
3566 if (current_buffer != given_buffer)
|
|
|
3567 {
|
|
|
3568 start = make_int (BUF_BEGV (current_buffer));
|
|
|
3569 end = make_int (BUF_ZV (current_buffer));
|
|
|
3570 annotations = Qnil;
|
|
|
3571 }
|
|
|
3572 Flength (res);
|
|
|
3573 annotations = merge (annotations, res, Qcar_less_than_car);
|
|
|
3574 p = Fcdr (p);
|
|
|
3575 }
|
|
|
3576 UNGCPRO;
|
|
|
3577 return annotations;
|
|
|
3578 }
|
|
|
3579
|
|
|
3580 /* Write to stream OUTSTREAM the characters from INSTREAM (it is read until
|
|
|
3581 EOF is encountered), assuming they start at position POS in the buffer
|
|
|
3582 of string that STREAM refers to. Intersperse with them the annotations
|
|
|
3583 from *ANNOT that fall into the range of positions we are reading from,
|
|
|
3584 each at its appropriate position.
|
|
|
3585
|
|
|
3586 Modify *ANNOT by discarding elements as we output them.
|
|
|
3587 The return value is negative in case of system call failure. */
|
|
|
3588
|
|
|
3589 /* 4K should probably be fine. We just need to reduce the number of
|
|
|
3590 function calls to reasonable level. The Lstream stuff itself will
|
|
|
3591 batch to 64K to reduce the number of system calls. */
|
|
|
3592
|
|
|
3593 #define A_WRITE_BATCH_SIZE 4096
|
|
|
3594
|
|
|
3595 static int
|
|
|
3596 a_write (Lisp_Object outstream, Lisp_Object instream, int pos,
|
|
|
3597 Lisp_Object *annot)
|
|
|
3598 {
|
|
|
3599 Lisp_Object tem;
|
|
|
3600 int nextpos;
|
|
|
3601 unsigned char largebuf[A_WRITE_BATCH_SIZE];
|
|
|
3602 Lstream *instr = XLSTREAM (instream);
|
|
|
3603 Lstream *outstr = XLSTREAM (outstream);
|
|
|
3604
|
|
|
3605 while (LISTP (*annot))
|
|
|
3606 {
|
|
|
3607 tem = Fcar_safe (Fcar (*annot));
|
|
|
3608 if (INTP (tem))
|
|
|
3609 nextpos = XINT (tem);
|
|
|
3610 else
|
|
|
3611 nextpos = INT_MAX;
|
|
|
3612 #ifdef MULE
|
|
|
3613 /* If there are annotations left and we have Mule, then we
|
|
867
|
3614 have to do the I/O one ichar at a time so we can
|
|
428
|
3615 determine when to insert the annotation. */
|
|
|
3616 if (!NILP (*annot))
|
|
|
3617 {
|
|
867
|
3618 Ichar ch;
|
|
|
3619 while (pos != nextpos && (ch = Lstream_get_ichar (instr)) != EOF)
|
|
428
|
3620 {
|
|
867
|
3621 if (Lstream_put_ichar (outstr, ch) < 0)
|
|
428
|
3622 return -1;
|
|
|
3623 pos++;
|
|
|
3624 }
|
|
|
3625 }
|
|
|
3626 else
|
|
|
3627 #endif /* MULE */
|
|
|
3628 {
|
|
|
3629 while (pos != nextpos)
|
|
|
3630 {
|
|
|
3631 /* Otherwise there is no point to that. Just go in batches. */
|
|
|
3632 int chunk = min (nextpos - pos, A_WRITE_BATCH_SIZE);
|
|
|
3633
|
|
|
3634 chunk = Lstream_read (instr, largebuf, chunk);
|
|
|
3635 if (chunk < 0)
|
|
|
3636 return -1;
|
|
|
3637 if (chunk == 0) /* EOF */
|
|
|
3638 break;
|
|
771
|
3639 if (Lstream_write (outstr, largebuf, chunk) < 0)
|
|
428
|
3640 return -1;
|
|
|
3641 pos += chunk;
|
|
|
3642 }
|
|
|
3643 }
|
|
|
3644 if (pos == nextpos)
|
|
|
3645 {
|
|
|
3646 tem = Fcdr (Fcar (*annot));
|
|
|
3647 if (STRINGP (tem))
|
|
|
3648 {
|
|
|
3649 if (Lstream_write (outstr, XSTRING_DATA (tem),
|
|
|
3650 XSTRING_LENGTH (tem)) < 0)
|
|
|
3651 return -1;
|
|
|
3652 }
|
|
|
3653 *annot = Fcdr (*annot);
|
|
|
3654 }
|
|
|
3655 else
|
|
|
3656 return 0;
|
|
|
3657 }
|
|
|
3658 return -1;
|
|
|
3659 }
|
|
|
3660
|
|
|
3661
|
|
|
3662
|
|
|
3663 #if 0
|
|
|
3664 #include <des_crypt.h>
|
|
|
3665
|
|
|
3666 #define CRYPT_BLOCK_SIZE 8 /* bytes */
|
|
|
3667 #define CRYPT_KEY_SIZE 8 /* bytes */
|
|
|
3668
|
|
|
3669 DEFUN ("encrypt-string", Fencrypt_string, 2, 2, 0, /*
|
|
|
3670 Encrypt STRING using KEY.
|
|
|
3671 */
|
|
|
3672 (string, key))
|
|
|
3673 {
|
|
|
3674 char *encrypted_string, *raw_key;
|
|
|
3675 int rounded_size, extra, key_size;
|
|
|
3676
|
|
|
3677 /* !!#### May produce bogus data under Mule. */
|
|
|
3678 CHECK_STRING (string);
|
|
|
3679 CHECK_STRING (key);
|
|
|
3680
|
|
|
3681 extra = XSTRING_LENGTH (string) % CRYPT_BLOCK_SIZE;
|
|
|
3682 rounded_size = XSTRING_LENGTH (string) + extra;
|
|
851
|
3683 encrypted_string = ALLOCA (rounded_size + 1);
|
|
428
|
3684 memcpy (encrypted_string, XSTRING_DATA (string), XSTRING_LENGTH (string));
|
|
|
3685 memset (encrypted_string + rounded_size - extra, 0, extra + 1);
|
|
|
3686
|
|
|
3687 key_size = min (CRYPT_KEY_SIZE, XSTRING_LENGTH (key))
|
|
|
3688
|
|
851
|
3689 raw_key = ALLOCA (CRYPT_KEY_SIZE + 1);
|
|
428
|
3690 memcpy (raw_key, XSTRING_DATA (key), key_size);
|
|
|
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);
|
|
|
3695 return make_string (encrypted_string, rounded_size);
|
|
|
3696 }
|
|
|
3697
|
|
|
3698 DEFUN ("decrypt-string", Fdecrypt_string, 2, 2, 0, /*
|
|
|
3699 Decrypt STRING using KEY.
|
|
|
3700 */
|
|
|
3701 (string, key))
|
|
|
3702 {
|
|
771
|
3703 /* !!#### May produce bogus data under Mule. */
|
|
428
|
3704 char *decrypted_string, *raw_key;
|
|
|
3705 int string_size, key_size;
|
|
|
3706
|
|
|
3707 CHECK_STRING (string);
|
|
|
3708 CHECK_STRING (key);
|
|
|
3709
|
|
|
3710 string_size = XSTRING_LENGTH (string) + 1;
|
|
851
|
3711 decrypted_string = ALLOCA (string_size);
|
|
428
|
3712 memcpy (decrypted_string, XSTRING_DATA (string), string_size);
|
|
|
3713 decrypted_string[string_size - 1] = '\0';
|
|
|
3714
|
|
|
3715 key_size = min (CRYPT_KEY_SIZE, XSTRING_LENGTH (key))
|
|
|
3716
|
|
851
|
3717 raw_key = ALLOCA (CRYPT_KEY_SIZE + 1);
|
|
428
|
3718 memcpy (raw_key, XSTRING_DATA (key), key_size);
|
|
|
3719 memset (raw_key + key_size, 0, (CRYPT_KEY_SIZE + 1) - key_size);
|
|
|
3720
|
|
|
3721
|
|
|
3722 ecb_crypt (raw_key, decrypted_string, string_size, D | DES_SW);
|
|
|
3723 return make_string (decrypted_string, string_size - 1);
|
|
|
3724 }
|
|
|
3725 #endif /* 0 */
|
|
|
3726
|
|
|
3727
|
|
|
3728 DEFUN ("verify-visited-file-modtime", Fverify_visited_file_modtime, 1, 1, 0, /*
|
|
444
|
3729 Return t if last mod time of BUFFER's visited file matches what BUFFER records.
|
|
428
|
3730 This means that the file has not been changed since it was visited or saved.
|
|
|
3731 */
|
|
444
|
3732 (buffer))
|
|
428
|
3733 {
|
|
442
|
3734 /* This function can call lisp; GC checked 2000-07-11 ben */
|
|
428
|
3735 struct buffer *b;
|
|
|
3736 struct stat st;
|
|
|
3737 Lisp_Object handler;
|
|
|
3738
|
|
444
|
3739 CHECK_BUFFER (buffer);
|
|
|
3740 b = XBUFFER (buffer);
|
|
428
|
3741
|
|
|
3742 if (!STRINGP (b->filename)) return Qt;
|
|
|
3743 if (b->modtime == 0) return Qt;
|
|
|
3744
|
|
|
3745 /* If the file name has special constructs in it,
|
|
|
3746 call the corresponding file handler. */
|
|
|
3747 handler = Ffind_file_name_handler (b->filename,
|
|
|
3748 Qverify_visited_file_modtime);
|
|
|
3749 if (!NILP (handler))
|
|
444
|
3750 return call2 (handler, Qverify_visited_file_modtime, buffer);
|
|
428
|
3751
|
|
771
|
3752 if (qxe_stat (XSTRING_DATA (b->filename), &st) < 0)
|
|
428
|
3753 {
|
|
|
3754 /* If the file doesn't exist now and didn't exist before,
|
|
|
3755 we say that it isn't modified, provided the error is a tame one. */
|
|
|
3756 if (errno == ENOENT || errno == EACCES || errno == ENOTDIR)
|
|
|
3757 st.st_mtime = -1;
|
|
|
3758 else
|
|
|
3759 st.st_mtime = 0;
|
|
|
3760 }
|
|
|
3761 if (st.st_mtime == b->modtime
|
|
|
3762 /* If both are positive, accept them if they are off by one second. */
|
|
|
3763 || (st.st_mtime > 0 && b->modtime > 0
|
|
|
3764 && (st.st_mtime == b->modtime + 1
|
|
|
3765 || st.st_mtime == b->modtime - 1)))
|
|
|
3766 return Qt;
|
|
|
3767 return Qnil;
|
|
|
3768 }
|
|
|
3769
|
|
|
3770 DEFUN ("clear-visited-file-modtime", Fclear_visited_file_modtime, 0, 0, 0, /*
|
|
|
3771 Clear out records of last mod time of visited file.
|
|
|
3772 Next attempt to save will certainly not complain of a discrepancy.
|
|
|
3773 */
|
|
|
3774 ())
|
|
|
3775 {
|
|
|
3776 current_buffer->modtime = 0;
|
|
|
3777 return Qnil;
|
|
|
3778 }
|
|
|
3779
|
|
|
3780 DEFUN ("visited-file-modtime", Fvisited_file_modtime, 0, 0, 0, /*
|
|
|
3781 Return the current buffer's recorded visited file modification time.
|
|
|
3782 The value is a list of the form (HIGH . LOW), like the time values
|
|
|
3783 that `file-attributes' returns.
|
|
|
3784 */
|
|
|
3785 ())
|
|
|
3786 {
|
|
|
3787 return time_to_lisp ((time_t) current_buffer->modtime);
|
|
|
3788 }
|
|
|
3789
|
|
|
3790 DEFUN ("set-visited-file-modtime", Fset_visited_file_modtime, 0, 1, 0, /*
|
|
|
3791 Update buffer's recorded modification time from the visited file's time.
|
|
|
3792 Useful if the buffer was not read from the file normally
|
|
|
3793 or if the file itself has been changed for some known benign reason.
|
|
|
3794 An argument specifies the modification time value to use
|
|
|
3795 \(instead of that of the visited file), in the form of a list
|
|
|
3796 \(HIGH . LOW) or (HIGH LOW).
|
|
|
3797 */
|
|
|
3798 (time_list))
|
|
|
3799 {
|
|
|
3800 /* This function can call lisp */
|
|
|
3801 if (!NILP (time_list))
|
|
|
3802 {
|
|
|
3803 time_t the_time;
|
|
|
3804 lisp_to_time (time_list, &the_time);
|
|
|
3805 current_buffer->modtime = (int) the_time;
|
|
|
3806 }
|
|
|
3807 else
|
|
|
3808 {
|
|
446
|
3809 Lisp_Object filename = Qnil;
|
|
428
|
3810 struct stat st;
|
|
|
3811 Lisp_Object handler;
|
|
|
3812 struct gcpro gcpro1, gcpro2, gcpro3;
|
|
|
3813
|
|
|
3814 GCPRO3 (filename, time_list, current_buffer->filename);
|
|
|
3815 filename = Fexpand_file_name (current_buffer->filename, Qnil);
|
|
|
3816
|
|
|
3817 /* If the file name has special constructs in it,
|
|
|
3818 call the corresponding file handler. */
|
|
|
3819 handler = Ffind_file_name_handler (filename, Qset_visited_file_modtime);
|
|
|
3820 UNGCPRO;
|
|
|
3821 if (!NILP (handler))
|
|
|
3822 /* The handler can find the file name the same way we did. */
|
|
|
3823 return call2 (handler, Qset_visited_file_modtime, Qnil);
|
|
771
|
3824 else if (qxe_stat (XSTRING_DATA (filename), &st) >= 0)
|
|
428
|
3825 current_buffer->modtime = st.st_mtime;
|
|
|
3826 }
|
|
|
3827
|
|
|
3828 return Qnil;
|
|
|
3829 }
|
|
|
3830
|
|
|
3831 static Lisp_Object
|
|
|
3832 auto_save_error (Lisp_Object condition_object, Lisp_Object ignored)
|
|
|
3833 {
|
|
|
3834 /* This function can call lisp */
|
|
|
3835 if (gc_in_progress)
|
|
|
3836 return Qnil;
|
|
|
3837 /* Don't try printing an error message after everything is gone! */
|
|
|
3838 if (preparing_for_armageddon)
|
|
|
3839 return Qnil;
|
|
|
3840 clear_echo_area (selected_frame (), Qauto_saving, 1);
|
|
|
3841 Fding (Qt, Qauto_save_error, Qnil);
|
|
|
3842 message ("Auto-saving...error for %s", XSTRING_DATA (current_buffer->name));
|
|
|
3843 Fsleep_for (make_int (1));
|
|
|
3844 message ("Auto-saving...error!for %s", XSTRING_DATA (current_buffer->name));
|
|
|
3845 Fsleep_for (make_int (1));
|
|
|
3846 message ("Auto-saving...error for %s", XSTRING_DATA (current_buffer->name));
|
|
|
3847 Fsleep_for (make_int (1));
|
|
|
3848 return Qnil;
|
|
|
3849 }
|
|
|
3850
|
|
|
3851 static Lisp_Object
|
|
|
3852 auto_save_1 (Lisp_Object ignored)
|
|
|
3853 {
|
|
|
3854 /* This function can call lisp */
|
|
|
3855 /* #### I think caller is protecting current_buffer? */
|
|
|
3856 struct stat st;
|
|
|
3857 Lisp_Object fn = current_buffer->filename;
|
|
|
3858 Lisp_Object a = current_buffer->auto_save_file_name;
|
|
|
3859
|
|
|
3860 if (!STRINGP (a))
|
|
|
3861 return (Qnil);
|
|
|
3862
|
|
|
3863 /* Get visited file's mode to become the auto save file's mode. */
|
|
|
3864 if (STRINGP (fn) &&
|
|
771
|
3865 qxe_stat (XSTRING_DATA (fn), &st) >= 0)
|
|
428
|
3866 /* But make sure we can overwrite it later! */
|
|
|
3867 auto_save_mode_bits = st.st_mode | 0600;
|
|
|
3868 else
|
|
|
3869 /* default mode for auto-save files of buffers with no file is
|
|
|
3870 readable by owner only. This may annoy some small number of
|
|
|
3871 people, but the alternative removes all privacy from email. */
|
|
|
3872 auto_save_mode_bits = 0600;
|
|
|
3873
|
|
|
3874 return
|
|
|
3875 Fwrite_region_internal (Qnil, Qnil, a, Qnil, Qlambda, Qnil,
|
|
771
|
3876 #if 1 /* #### Kyle wants it changed to not use escape-quoted. Think
|
|
|
3877 carefully about how this works. */
|
|
|
3878 Qescape_quoted
|
|
|
3879 #else
|
|
707
|
3880 current_buffer->buffer_file_coding_system
|
|
428
|
3881 #endif
|
|
|
3882 );
|
|
|
3883 }
|
|
|
3884
|
|
|
3885 static Lisp_Object
|
|
|
3886 auto_save_expand_name_error (Lisp_Object condition_object, Lisp_Object ignored)
|
|
|
3887 {
|
|
771
|
3888 warn_when_safe_lispobj
|
|
793
|
3889 (Qfile, Qerror,
|
|
771
|
3890 Fcons (build_msg_string ("Invalid auto-save list-file"),
|
|
|
3891 Fcons (Vauto_save_list_file_name,
|
|
|
3892 condition_object)));
|
|
428
|
3893 return Qnil;
|
|
|
3894 }
|
|
|
3895
|
|
|
3896 static Lisp_Object
|
|
|
3897 auto_save_expand_name (Lisp_Object name)
|
|
|
3898 {
|
|
|
3899 struct gcpro gcpro1;
|
|
|
3900
|
|
|
3901 /* note that caller did NOT gc protect name, so we do it. */
|
|
771
|
3902 /* [[dmoore - this might not be necessary, if condition_case_1
|
|
|
3903 protects it. but I don't think it does.]] indeed it doesn't. --ben */
|
|
428
|
3904 GCPRO1 (name);
|
|
|
3905 RETURN_UNGCPRO (Fexpand_file_name (name, Qnil));
|
|
|
3906 }
|
|
|
3907
|
|
|
3908
|
|
|
3909 static Lisp_Object
|
|
|
3910 do_auto_save_unwind (Lisp_Object fd)
|
|
|
3911 {
|
|
771
|
3912 retry_close (XINT (fd));
|
|
428
|
3913 return (fd);
|
|
|
3914 }
|
|
|
3915
|
|
|
3916 /* Fdo_auto_save() checks whether a GC is in progress when it is called,
|
|
|
3917 and if so, tries to avoid touching lisp objects.
|
|
|
3918
|
|
|
3919 The only time that Fdo_auto_save() is called while GC is in progress
|
|
|
3920 is if we're going down, as a result of an abort() or a kill signal.
|
|
|
3921 It's fairly important that we generate autosave files in that case!
|
|
|
3922 */
|
|
|
3923
|
|
|
3924 DEFUN ("do-auto-save", Fdo_auto_save, 0, 2, "", /*
|
|
|
3925 Auto-save all buffers that need it.
|
|
|
3926 This is all buffers that have auto-saving enabled
|
|
|
3927 and are changed since last auto-saved.
|
|
|
3928 Auto-saving writes the buffer into a file
|
|
|
3929 so that your editing is not lost if the system crashes.
|
|
|
3930 This file is not the file you visited; that changes only when you save.
|
|
|
3931 Normally we run the normal hook `auto-save-hook' before saving.
|
|
|
3932
|
|
|
3933 Non-nil first argument means do not print any message if successful.
|
|
|
3934 Non-nil second argument means save only current buffer.
|
|
|
3935 */
|
|
|
3936 (no_message, current_only))
|
|
|
3937 {
|
|
|
3938 /* This function can call lisp */
|
|
|
3939 struct buffer *b;
|
|
|
3940 Lisp_Object tail, buf;
|
|
|
3941 int auto_saved = 0;
|
|
|
3942 int do_handled_files;
|
|
|
3943 Lisp_Object oquit = Qnil;
|
|
|
3944 Lisp_Object listfile = Qnil;
|
|
|
3945 Lisp_Object old;
|
|
|
3946 int listdesc = -1;
|
|
|
3947 int speccount = specpdl_depth ();
|
|
|
3948 struct gcpro gcpro1, gcpro2, gcpro3;
|
|
|
3949
|
|
793
|
3950 old = wrap_buffer (current_buffer);
|
|
428
|
3951 GCPRO3 (oquit, listfile, old);
|
|
|
3952 check_quit (); /* make Vquit_flag accurate */
|
|
|
3953 /* Ordinarily don't quit within this function,
|
|
|
3954 but don't make it impossible to quit (in case we get hung in I/O). */
|
|
|
3955 oquit = Vquit_flag;
|
|
|
3956 Vquit_flag = Qnil;
|
|
|
3957
|
|
|
3958 /* No further GCPRO needed, because (when it matters) all Lisp_Object
|
|
|
3959 variables point to non-strings reached from Vbuffer_alist. */
|
|
|
3960
|
|
|
3961 if (minibuf_level != 0 || preparing_for_armageddon)
|
|
|
3962 no_message = Qt;
|
|
|
3963
|
|
|
3964 run_hook (Qauto_save_hook);
|
|
|
3965
|
|
|
3966 if (STRINGP (Vauto_save_list_file_name))
|
|
|
3967 listfile = condition_case_1 (Qt,
|
|
|
3968 auto_save_expand_name,
|
|
|
3969 Vauto_save_list_file_name,
|
|
|
3970 auto_save_expand_name_error, Qnil);
|
|
|
3971
|
|
853
|
3972 internal_bind_int (&auto_saving, 1);
|
|
428
|
3973
|
|
|
3974 /* First, save all files which don't have handlers. If Emacs is
|
|
|
3975 crashing, the handlers may tweak what is causing Emacs to crash
|
|
|
3976 in the first place, and it would be a shame if Emacs failed to
|
|
|
3977 autosave perfectly ordinary files because it couldn't handle some
|
|
|
3978 ange-ftp'd file. */
|
|
|
3979 for (do_handled_files = 0; do_handled_files < 2; do_handled_files++)
|
|
|
3980 {
|
|
|
3981 for (tail = Vbuffer_alist;
|
|
|
3982 CONSP (tail);
|
|
|
3983 tail = XCDR (tail))
|
|
|
3984 {
|
|
|
3985 buf = XCDR (XCAR (tail));
|
|
|
3986 b = XBUFFER (buf);
|
|
|
3987
|
|
|
3988 if (!NILP (current_only)
|
|
|
3989 && b != current_buffer)
|
|
|
3990 continue;
|
|
|
3991
|
|
|
3992 /* Don't auto-save indirect buffers.
|
|
|
3993 The base buffer takes care of it. */
|
|
|
3994 if (b->base_buffer)
|
|
|
3995 continue;
|
|
|
3996
|
|
|
3997 /* Check for auto save enabled
|
|
|
3998 and file changed since last auto save
|
|
|
3999 and file changed since last real save. */
|
|
|
4000 if (STRINGP (b->auto_save_file_name)
|
|
|
4001 && BUF_SAVE_MODIFF (b) < BUF_MODIFF (b)
|
|
|
4002 && b->auto_save_modified < BUF_MODIFF (b)
|
|
|
4003 /* -1 means we've turned off autosaving for a while--see below. */
|
|
|
4004 && XINT (b->saved_size) >= 0
|
|
|
4005 && (do_handled_files
|
|
|
4006 || NILP (Ffind_file_name_handler (b->auto_save_file_name,
|
|
|
4007 Qwrite_region))))
|
|
|
4008 {
|
|
|
4009 EMACS_TIME before_time, after_time;
|
|
|
4010
|
|
|
4011 EMACS_GET_TIME (before_time);
|
|
|
4012 /* If we had a failure, don't try again for 20 minutes. */
|
|
|
4013 if (!preparing_for_armageddon
|
|
|
4014 && b->auto_save_failure_time >= 0
|
|
|
4015 && (EMACS_SECS (before_time) - b->auto_save_failure_time <
|
|
|
4016 1200))
|
|
|
4017 continue;
|
|
|
4018
|
|
|
4019 if (!preparing_for_armageddon &&
|
|
|
4020 (XINT (b->saved_size) * 10
|
|
|
4021 > (BUF_Z (b) - BUF_BEG (b)) * 13)
|
|
|
4022 /* A short file is likely to change a large fraction;
|
|
|
4023 spare the user annoying messages. */
|
|
|
4024 && XINT (b->saved_size) > 5000
|
|
|
4025 /* These messages are frequent and annoying for `*mail*'. */
|
|
|
4026 && !NILP (b->filename)
|
|
|
4027 && NILP (no_message)
|
|
|
4028 && disable_auto_save_when_buffer_shrinks)
|
|
|
4029 {
|
|
|
4030 /* It has shrunk too much; turn off auto-saving here.
|
|
|
4031 Unless we're about to crash, in which case auto-save it
|
|
|
4032 anyway.
|
|
|
4033 */
|
|
|
4034 message
|
|
|
4035 ("Buffer %s has shrunk a lot; auto save turned off there",
|
|
|
4036 XSTRING_DATA (b->name));
|
|
|
4037 /* Turn off auto-saving until there's a real save,
|
|
|
4038 and prevent any more warnings. */
|
|
|
4039 b->saved_size = make_int (-1);
|
|
|
4040 if (!gc_in_progress)
|
|
|
4041 Fsleep_for (make_int (1));
|
|
|
4042 continue;
|
|
|
4043 }
|
|
|
4044 set_buffer_internal (b);
|
|
|
4045 if (!auto_saved && NILP (no_message))
|
|
|
4046 {
|
|
442
|
4047 static const unsigned char *msg
|
|
|
4048 = (const unsigned char *) "Auto-saving...";
|
|
428
|
4049 echo_area_message (selected_frame (), msg, Qnil,
|
|
442
|
4050 0, strlen ((const char *) msg),
|
|
428
|
4051 Qauto_saving);
|
|
|
4052 }
|
|
|
4053
|
|
|
4054 /* Open the auto-save list file, if necessary.
|
|
|
4055 We only do this now so that the file only exists
|
|
|
4056 if we actually auto-saved any files. */
|
|
444
|
4057 if (!auto_saved && !inhibit_auto_save_session
|
|
|
4058 && !NILP (Vauto_save_list_file_prefix)
|
|
|
4059 && STRINGP (listfile) && listdesc < 0)
|
|
428
|
4060 {
|
|
771
|
4061 listdesc =
|
|
|
4062 qxe_open (XSTRING_DATA (listfile),
|
|
|
4063 O_WRONLY | O_TRUNC | O_CREAT | OPEN_BINARY,
|
|
|
4064 CREAT_MODE);
|
|
428
|
4065
|
|
|
4066 /* Arrange to close that file whether or not we get
|
|
|
4067 an error. */
|
|
|
4068 if (listdesc >= 0)
|
|
|
4069 record_unwind_protect (do_auto_save_unwind,
|
|
|
4070 make_int (listdesc));
|
|
|
4071 }
|
|
|
4072
|
|
|
4073 /* Record all the buffers that we are auto-saving in
|
|
|
4074 the special file that lists them. For each of
|
|
|
4075 these buffers, record visited name (if any) and
|
|
|
4076 auto save name. */
|
|
|
4077 if (listdesc >= 0)
|
|
|
4078 {
|
|
442
|
4079 const Extbyte *auto_save_file_name_ext;
|
|
665
|
4080 Bytecount auto_save_file_name_ext_len;
|
|
428
|
4081
|
|
440
|
4082 TO_EXTERNAL_FORMAT (LISP_STRING, b->auto_save_file_name,
|
|
|
4083 ALLOCA, (auto_save_file_name_ext,
|
|
|
4084 auto_save_file_name_ext_len),
|
|
771
|
4085 Qescape_quoted);
|
|
428
|
4086 if (!NILP (b->filename))
|
|
|
4087 {
|
|
442
|
4088 const Extbyte *filename_ext;
|
|
665
|
4089 Bytecount filename_ext_len;
|
|
428
|
4090
|
|
440
|
4091 TO_EXTERNAL_FORMAT (LISP_STRING, b->filename,
|
|
|
4092 ALLOCA, (filename_ext,
|
|
|
4093 filename_ext_len),
|
|
771
|
4094 Qescape_quoted);
|
|
|
4095 retry_write (listdesc, filename_ext, filename_ext_len);
|
|
428
|
4096 }
|
|
771
|
4097 retry_write (listdesc, "\n", 1);
|
|
|
4098 retry_write (listdesc, auto_save_file_name_ext,
|
|
428
|
4099 auto_save_file_name_ext_len);
|
|
771
|
4100 retry_write (listdesc, "\n", 1);
|
|
428
|
4101 }
|
|
|
4102
|
|
|
4103 /* dmoore - In a bad scenario we've set b=XBUFFER(buf)
|
|
|
4104 based on values in Vbuffer_alist. auto_save_1 may
|
|
|
4105 cause lisp handlers to run. Those handlers may kill
|
|
|
4106 the buffer and then GC. Since the buffer is killed,
|
|
|
4107 it's no longer in Vbuffer_alist so it might get reaped
|
|
|
4108 by the GC. We also need to protect tail. */
|
|
|
4109 /* #### There is probably a lot of other code which has
|
|
|
4110 pointers into buffers which may get blown away by
|
|
|
4111 handlers. */
|
|
|
4112 {
|
|
|
4113 struct gcpro ngcpro1, ngcpro2;
|
|
|
4114 NGCPRO2 (buf, tail);
|
|
|
4115 condition_case_1 (Qt,
|
|
|
4116 auto_save_1, Qnil,
|
|
|
4117 auto_save_error, Qnil);
|
|
|
4118 NUNGCPRO;
|
|
|
4119 }
|
|
|
4120 /* Handler killed our saved current-buffer! Pick any. */
|
|
|
4121 if (!BUFFER_LIVE_P (XBUFFER (old)))
|
|
793
|
4122 old = wrap_buffer (current_buffer);
|
|
428
|
4123
|
|
|
4124 set_buffer_internal (XBUFFER (old));
|
|
|
4125 auto_saved++;
|
|
|
4126
|
|
|
4127 /* Handler killed their own buffer! */
|
|
|
4128 if (!BUFFER_LIVE_P(b))
|
|
|
4129 continue;
|
|
|
4130
|
|
|
4131 b->auto_save_modified = BUF_MODIFF (b);
|
|
|
4132 b->saved_size = make_int (BUF_SIZE (b));
|
|
|
4133 EMACS_GET_TIME (after_time);
|
|
|
4134 /* If auto-save took more than 60 seconds,
|
|
|
4135 assume it was an NFS failure that got a timeout. */
|
|
|
4136 if (EMACS_SECS (after_time) - EMACS_SECS (before_time) > 60)
|
|
|
4137 b->auto_save_failure_time = EMACS_SECS (after_time);
|
|
|
4138 }
|
|
|
4139 }
|
|
|
4140 }
|
|
|
4141
|
|
|
4142 /* Prevent another auto save till enough input events come in. */
|
|
|
4143 if (auto_saved)
|
|
|
4144 record_auto_save ();
|
|
|
4145
|
|
|
4146 /* If we didn't save anything into the listfile, remove the old
|
|
|
4147 one because nothing needed to be auto-saved. Do this afterwards
|
|
|
4148 rather than before in case we get a crash attempting to autosave
|
|
|
4149 (in that case we'd still want the old one around). */
|
|
|
4150 if (listdesc < 0 && !auto_saved && STRINGP (listfile))
|
|
771
|
4151 qxe_unlink (XSTRING_DATA (listfile));
|
|
428
|
4152
|
|
|
4153 /* Show "...done" only if the echo area would otherwise be empty. */
|
|
|
4154 if (auto_saved && NILP (no_message)
|
|
|
4155 && NILP (clear_echo_area (selected_frame (), Qauto_saving, 0)))
|
|
|
4156 {
|
|
442
|
4157 static const unsigned char *msg
|
|
|
4158 = (const unsigned char *)"Auto-saving...done";
|
|
428
|
4159 echo_area_message (selected_frame (), msg, Qnil, 0,
|
|
442
|
4160 strlen ((const char *) msg), Qauto_saving);
|
|
428
|
4161 }
|
|
|
4162
|
|
|
4163 Vquit_flag = oquit;
|
|
|
4164
|
|
771
|
4165 RETURN_UNGCPRO (unbind_to (speccount));
|
|
428
|
4166 }
|
|
|
4167
|
|
|
4168 DEFUN ("set-buffer-auto-saved", Fset_buffer_auto_saved, 0, 0, 0, /*
|
|
|
4169 Mark current buffer as auto-saved with its current text.
|
|
|
4170 No auto-save file will be written until the buffer changes again.
|
|
|
4171 */
|
|
|
4172 ())
|
|
|
4173 {
|
|
|
4174 current_buffer->auto_save_modified = BUF_MODIFF (current_buffer);
|
|
|
4175 current_buffer->saved_size = make_int (BUF_SIZE (current_buffer));
|
|
|
4176 current_buffer->auto_save_failure_time = -1;
|
|
|
4177 return Qnil;
|
|
|
4178 }
|
|
|
4179
|
|
|
4180 DEFUN ("clear-buffer-auto-save-failure", Fclear_buffer_auto_save_failure, 0, 0, 0, /*
|
|
|
4181 Clear any record of a recent auto-save failure in the current buffer.
|
|
|
4182 */
|
|
|
4183 ())
|
|
|
4184 {
|
|
|
4185 current_buffer->auto_save_failure_time = -1;
|
|
|
4186 return Qnil;
|
|
|
4187 }
|
|
|
4188
|
|
|
4189 DEFUN ("recent-auto-save-p", Frecent_auto_save_p, 0, 0, 0, /*
|
|
|
4190 Return t if buffer has been auto-saved since last read in or saved.
|
|
|
4191 */
|
|
|
4192 ())
|
|
|
4193 {
|
|
|
4194 return (BUF_SAVE_MODIFF (current_buffer) <
|
|
|
4195 current_buffer->auto_save_modified) ? Qt : Qnil;
|
|
|
4196 }
|
|
|
4197
|
|
|
4198
|
|
|
4199 /************************************************************************/
|
|
|
4200 /* initialization */
|
|
|
4201 /************************************************************************/
|
|
|
4202
|
|
|
4203 void
|
|
|
4204 syms_of_fileio (void)
|
|
|
4205 {
|
|
563
|
4206 DEFSYMBOL (Qexpand_file_name);
|
|
|
4207 DEFSYMBOL (Qfile_truename);
|
|
|
4208 DEFSYMBOL (Qsubstitute_in_file_name);
|
|
|
4209 DEFSYMBOL (Qdirectory_file_name);
|
|
|
4210 DEFSYMBOL (Qfile_name_directory);
|
|
|
4211 DEFSYMBOL (Qfile_name_nondirectory);
|
|
996
|
4212 DEFSYMBOL (Qfile_name_sans_extension);
|
|
563
|
4213 DEFSYMBOL (Qunhandled_file_name_directory);
|
|
|
4214 DEFSYMBOL (Qfile_name_as_directory);
|
|
|
4215 DEFSYMBOL (Qcopy_file);
|
|
|
4216 DEFSYMBOL (Qmake_directory_internal);
|
|
|
4217 DEFSYMBOL (Qdelete_directory);
|
|
|
4218 DEFSYMBOL (Qdelete_file);
|
|
|
4219 DEFSYMBOL (Qrename_file);
|
|
|
4220 DEFSYMBOL (Qadd_name_to_file);
|
|
|
4221 DEFSYMBOL (Qmake_symbolic_link);
|
|
844
|
4222 DEFSYMBOL (Qmake_temp_name);
|
|
563
|
4223 DEFSYMBOL (Qfile_exists_p);
|
|
|
4224 DEFSYMBOL (Qfile_executable_p);
|
|
|
4225 DEFSYMBOL (Qfile_readable_p);
|
|
|
4226 DEFSYMBOL (Qfile_symlink_p);
|
|
|
4227 DEFSYMBOL (Qfile_writable_p);
|
|
|
4228 DEFSYMBOL (Qfile_directory_p);
|
|
|
4229 DEFSYMBOL (Qfile_regular_p);
|
|
|
4230 DEFSYMBOL (Qfile_accessible_directory_p);
|
|
|
4231 DEFSYMBOL (Qfile_modes);
|
|
|
4232 DEFSYMBOL (Qset_file_modes);
|
|
|
4233 DEFSYMBOL (Qfile_newer_than_file_p);
|
|
|
4234 DEFSYMBOL (Qinsert_file_contents);
|
|
|
4235 DEFSYMBOL (Qwrite_region);
|
|
|
4236 DEFSYMBOL (Qverify_visited_file_modtime);
|
|
|
4237 DEFSYMBOL (Qset_visited_file_modtime);
|
|
|
4238 DEFSYMBOL (Qcar_less_than_car); /* Vomitous! */
|
|
|
4239
|
|
|
4240 DEFSYMBOL (Qauto_save_hook);
|
|
|
4241 DEFSYMBOL (Qauto_save_error);
|
|
|
4242 DEFSYMBOL (Qauto_saving);
|
|
|
4243
|
|
|
4244 DEFSYMBOL (Qformat_decode);
|
|
|
4245 DEFSYMBOL (Qformat_annotate_function);
|
|
|
4246
|
|
|
4247 DEFSYMBOL (Qcompute_buffer_file_truename);
|
|
|
4248
|
|
442
|
4249 DEFERROR_STANDARD (Qfile_already_exists, Qfile_error);
|
|
428
|
4250
|
|
|
4251 DEFSUBR (Ffind_file_name_handler);
|
|
|
4252
|
|
|
4253 DEFSUBR (Ffile_name_directory);
|
|
|
4254 DEFSUBR (Ffile_name_nondirectory);
|
|
|
4255 DEFSUBR (Funhandled_file_name_directory);
|
|
|
4256 DEFSUBR (Ffile_name_as_directory);
|
|
|
4257 DEFSUBR (Fdirectory_file_name);
|
|
|
4258 DEFSUBR (Fmake_temp_name);
|
|
|
4259 DEFSUBR (Fexpand_file_name);
|
|
|
4260 DEFSUBR (Ffile_truename);
|
|
|
4261 DEFSUBR (Fsubstitute_in_file_name);
|
|
|
4262 DEFSUBR (Fcopy_file);
|
|
|
4263 DEFSUBR (Fmake_directory_internal);
|
|
|
4264 DEFSUBR (Fdelete_directory);
|
|
|
4265 DEFSUBR (Fdelete_file);
|
|
|
4266 DEFSUBR (Frename_file);
|
|
|
4267 DEFSUBR (Fadd_name_to_file);
|
|
|
4268 DEFSUBR (Fmake_symbolic_link);
|
|
|
4269 #ifdef HPUX_NET
|
|
|
4270 DEFSUBR (Fsysnetunam);
|
|
|
4271 #endif /* HPUX_NET */
|
|
|
4272 DEFSUBR (Ffile_name_absolute_p);
|
|
|
4273 DEFSUBR (Ffile_exists_p);
|
|
|
4274 DEFSUBR (Ffile_executable_p);
|
|
|
4275 DEFSUBR (Ffile_readable_p);
|
|
|
4276 DEFSUBR (Ffile_writable_p);
|
|
|
4277 DEFSUBR (Ffile_symlink_p);
|
|
|
4278 DEFSUBR (Ffile_directory_p);
|
|
|
4279 DEFSUBR (Ffile_accessible_directory_p);
|
|
|
4280 DEFSUBR (Ffile_regular_p);
|
|
|
4281 DEFSUBR (Ffile_modes);
|
|
|
4282 DEFSUBR (Fset_file_modes);
|
|
|
4283 DEFSUBR (Fset_default_file_modes);
|
|
|
4284 DEFSUBR (Fdefault_file_modes);
|
|
|
4285 DEFSUBR (Funix_sync);
|
|
|
4286 DEFSUBR (Ffile_newer_than_file_p);
|
|
|
4287 DEFSUBR (Finsert_file_contents_internal);
|
|
|
4288 DEFSUBR (Fwrite_region_internal);
|
|
|
4289 DEFSUBR (Fcar_less_than_car); /* Vomitous! */
|
|
|
4290 DEFSUBR (Fcdr_less_than_cdr); /* Yeah oh yeah bucko .... */
|
|
|
4291 #if 0
|
|
|
4292 DEFSUBR (Fencrypt_string);
|
|
|
4293 DEFSUBR (Fdecrypt_string);
|
|
|
4294 #endif
|
|
|
4295 DEFSUBR (Fverify_visited_file_modtime);
|
|
|
4296 DEFSUBR (Fclear_visited_file_modtime);
|
|
|
4297 DEFSUBR (Fvisited_file_modtime);
|
|
|
4298 DEFSUBR (Fset_visited_file_modtime);
|
|
|
4299
|
|
|
4300 DEFSUBR (Fdo_auto_save);
|
|
|
4301 DEFSUBR (Fset_buffer_auto_saved);
|
|
|
4302 DEFSUBR (Fclear_buffer_auto_save_failure);
|
|
|
4303 DEFSUBR (Frecent_auto_save_p);
|
|
|
4304 }
|
|
|
4305
|
|
|
4306 void
|
|
|
4307 vars_of_fileio (void)
|
|
|
4308 {
|
|
|
4309 DEFVAR_LISP ("auto-save-file-format", &Vauto_save_file_format /*
|
|
|
4310 *Format in which to write auto-save files.
|
|
|
4311 Should be a list of symbols naming formats that are defined in `format-alist'.
|
|
|
4312 If it is t, which is the default, auto-save files are written in the
|
|
|
4313 same format as a regular save would use.
|
|
|
4314 */ );
|
|
|
4315 Vauto_save_file_format = Qt;
|
|
|
4316
|
|
|
4317 DEFVAR_LISP ("file-name-handler-alist", &Vfile_name_handler_alist /*
|
|
|
4318 *Alist of elements (REGEXP . HANDLER) for file names handled specially.
|
|
|
4319 If a file name matches REGEXP, then all I/O on that file is done by calling
|
|
|
4320 HANDLER.
|
|
|
4321
|
|
|
4322 The first argument given to HANDLER is the name of the I/O primitive
|
|
|
4323 to be handled; the remaining arguments are the arguments that were
|
|
|
4324 passed to that primitive. For example, if you do
|
|
|
4325 (file-exists-p FILENAME)
|
|
|
4326 and FILENAME is handled by HANDLER, then HANDLER is called like this:
|
|
|
4327 (funcall HANDLER 'file-exists-p FILENAME)
|
|
|
4328 The function `find-file-name-handler' checks this list for a handler
|
|
|
4329 for its argument.
|
|
|
4330 */ );
|
|
|
4331 Vfile_name_handler_alist = Qnil;
|
|
|
4332
|
|
|
4333 DEFVAR_LISP ("after-insert-file-functions", &Vafter_insert_file_functions /*
|
|
|
4334 A list of functions to be called at the end of `insert-file-contents'.
|
|
|
4335 Each is passed one argument, the number of bytes inserted. It should return
|
|
|
4336 the new byte count, and leave point the same. If `insert-file-contents' is
|
|
|
4337 intercepted by a handler from `file-name-handler-alist', that handler is
|
|
|
4338 responsible for calling the after-insert-file-functions if appropriate.
|
|
|
4339 */ );
|
|
|
4340 Vafter_insert_file_functions = Qnil;
|
|
|
4341
|
|
|
4342 DEFVAR_LISP ("write-region-annotate-functions",
|
|
|
4343 &Vwrite_region_annotate_functions /*
|
|
|
4344 A list of functions to be called at the start of `write-region'.
|
|
|
4345 Each is passed two arguments, START and END, as for `write-region'.
|
|
|
4346 It should return a list of pairs (POSITION . STRING) of strings to be
|
|
|
4347 effectively inserted at the specified positions of the file being written
|
|
|
4348 \(1 means to insert before the first byte written). The POSITIONs must be
|
|
|
4349 sorted into increasing order. If there are several functions in the list,
|
|
|
4350 the several lists are merged destructively.
|
|
|
4351 */ );
|
|
|
4352 Vwrite_region_annotate_functions = Qnil;
|
|
|
4353
|
|
|
4354 DEFVAR_LISP ("write-region-annotations-so-far",
|
|
|
4355 &Vwrite_region_annotations_so_far /*
|
|
|
4356 When an annotation function is called, this holds the previous annotations.
|
|
|
4357 These are the annotations made by other annotation functions
|
|
|
4358 that were already called. See also `write-region-annotate-functions'.
|
|
|
4359 */ );
|
|
|
4360 Vwrite_region_annotations_so_far = Qnil;
|
|
|
4361
|
|
|
4362 DEFVAR_LISP ("inhibit-file-name-handlers", &Vinhibit_file_name_handlers /*
|
|
|
4363 A list of file name handlers that temporarily should not be used.
|
|
|
4364 This applies only to the operation `inhibit-file-name-operation'.
|
|
|
4365 */ );
|
|
|
4366 Vinhibit_file_name_handlers = Qnil;
|
|
|
4367
|
|
|
4368 DEFVAR_LISP ("inhibit-file-name-operation", &Vinhibit_file_name_operation /*
|
|
|
4369 The operation for which `inhibit-file-name-handlers' is applicable.
|
|
|
4370 */ );
|
|
|
4371 Vinhibit_file_name_operation = Qnil;
|
|
|
4372
|
|
|
4373 DEFVAR_LISP ("auto-save-list-file-name", &Vauto_save_list_file_name /*
|
|
|
4374 File name in which we write a list of all auto save file names.
|
|
|
4375 */ );
|
|
|
4376 Vauto_save_list_file_name = Qnil;
|
|
|
4377
|
|
444
|
4378 DEFVAR_LISP ("auto-save-list-file-prefix", &Vauto_save_list_file_prefix /*
|
|
|
4379 Prefix for generating auto-save-list-file-name.
|
|
|
4380 Emacs's pid and the system name will be appended to
|
|
|
4381 this prefix to create a unique file name.
|
|
|
4382 */ );
|
|
|
4383 Vauto_save_list_file_prefix = build_string ("~/.saves-");
|
|
|
4384
|
|
|
4385 DEFVAR_BOOL ("inhibit-auto-save-session", &inhibit_auto_save_session /*
|
|
|
4386 When non-nil, inhibit auto save list file creation.
|
|
|
4387 */ );
|
|
|
4388 inhibit_auto_save_session = 0;
|
|
|
4389
|
|
428
|
4390 DEFVAR_BOOL ("disable-auto-save-when-buffer-shrinks",
|
|
|
4391 &disable_auto_save_when_buffer_shrinks /*
|
|
|
4392 If non-nil, auto-saving is disabled when a buffer shrinks too much.
|
|
|
4393 This is to prevent you from losing your edits if you accidentally
|
|
|
4394 delete a large chunk of the buffer and don't notice it until too late.
|
|
|
4395 Saving the buffer normally turns auto-save back on.
|
|
|
4396 */ );
|
|
|
4397 disable_auto_save_when_buffer_shrinks = 1;
|
|
|
4398
|
|
|
4399 DEFVAR_LISP ("directory-sep-char", &Vdirectory_sep_char /*
|
|
|
4400 Directory separator character for built-in functions that return file names.
|
|
|
4401 The value should be either ?/ or ?\\ (any other value is treated as ?\\).
|
|
|
4402 This variable affects the built-in functions only on Windows,
|
|
|
4403 on other platforms, it is initialized so that Lisp code can find out
|
|
|
4404 what the normal separator is.
|
|
|
4405 */ );
|
|
771
|
4406 Vdirectory_sep_char = make_char (DEFAULT_DIRECTORY_SEP);
|
|
442
|
4407
|
|
|
4408 reinit_vars_of_fileio ();
|
|
428
|
4409 }
|
|
442
|
4410
|
|
|
4411 void
|
|
|
4412 reinit_vars_of_fileio (void)
|
|
|
4413 {
|
|
|
4414 /* We want temp_name_rand to be initialized to a value likely to be
|
|
|
4415 unique to the process, not to the executable. The danger is that
|
|
|
4416 two different XEmacs processes using the same binary on different
|
|
|
4417 machines creating temp files in the same directory will be
|
|
|
4418 unlucky enough to have the same pid. If we randomize using
|
|
|
4419 process startup time, then in practice they will be unlikely to
|
|
|
4420 collide. We use the microseconds field so that scripts that start
|
|
|
4421 simultaneous XEmacs processes on multiple machines will have less
|
|
|
4422 chance of collision. */
|
|
|
4423 {
|
|
|
4424 EMACS_TIME thyme;
|
|
|
4425
|
|
|
4426 EMACS_GET_TIME (thyme);
|
|
|
4427 temp_name_rand = (unsigned int) (EMACS_SECS (thyme) ^ EMACS_USECS (thyme));
|
|
|
4428 }
|
|
|
4429 }
|
