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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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34 #include "events.h"
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35 #include "frame.h"
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36 #include "insdel.h"
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37 #include "lstream.h"
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38 #include "redisplay.h"
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39 #include "sysdep.h"
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40 #include "window.h" /* minibuf_level */
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41 #include "file-coding.h"
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771
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42
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428
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43 #include "sysfile.h"
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44 #include "sysproc.h"
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45 #include "syspwd.h"
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46 #include "systime.h"
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47 #include "sysdir.h"
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48
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49 #ifdef HPUX
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50 #include <netio.h>
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51 #ifdef HPUX_PRE_8_0
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52 #include <errnet.h>
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53 #endif /* HPUX_PRE_8_0 */
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54 #endif /* HPUX */
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55
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771
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56 #if defined (WIN32_NATIVE) || defined (CYGWIN)
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657
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57 #define WIN32_FILENAMES
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771
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58 #include "syswindows.h"
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428
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59 #define IS_DRIVE(x) isalpha (x)
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60 /* Need to lower-case the drive letter, or else expanded
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61 filenames will sometimes compare inequal, because
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62 `expand-file-name' doesn't always down-case the drive letter. */
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63 #define DRIVE_LETTER(x) tolower (x)
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657
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64 #endif /* WIN32_NATIVE || CYGWIN */
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428
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65
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66 int lisp_to_time (Lisp_Object, time_t *);
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67 Lisp_Object time_to_lisp (time_t);
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68
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69 /* Nonzero during writing of auto-save files */
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70 static int auto_saving;
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71
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72 /* Set by auto_save_1 to mode of original file so Fwrite_region_internal
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73 will create a new file with the same mode as the original */
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74 static int auto_save_mode_bits;
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75
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76 /* Alist of elements (REGEXP . HANDLER) for file names
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77 whose I/O is done with a special handler. */
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78 Lisp_Object Vfile_name_handler_alist;
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79
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80 /* Format for auto-save files */
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81 Lisp_Object Vauto_save_file_format;
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82
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83 /* Lisp functions for translating file formats */
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84 Lisp_Object Qformat_decode, Qformat_annotate_function;
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85
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86 /* Functions to be called to process text properties in inserted file. */
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87 Lisp_Object Vafter_insert_file_functions;
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88
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89 /* Functions to be called to create text property annotations for file. */
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90 Lisp_Object Vwrite_region_annotate_functions;
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91
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92 /* During build_annotations, each time an annotation function is called,
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93 this holds the annotations made by the previous functions. */
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94 Lisp_Object Vwrite_region_annotations_so_far;
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95
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96 /* File name in which we write a list of all our auto save files. */
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97 Lisp_Object Vauto_save_list_file_name;
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98
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444
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99 /* Prefix used to construct Vauto_save_list_file_name. */
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100 Lisp_Object Vauto_save_list_file_prefix;
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101
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102 /* When non-nil, it prevents auto-save list file creation. */
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103 int inhibit_auto_save_session;
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104
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428
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105 int disable_auto_save_when_buffer_shrinks;
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106
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107 Lisp_Object Vdirectory_sep_char;
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108
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109 /* These variables describe handlers that have "already" had a chance
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110 to handle the current operation.
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111
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112 Vinhibit_file_name_handlers is a list of file name handlers.
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113 Vinhibit_file_name_operation is the operation being handled.
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114 If we try to handle that operation, we ignore those handlers. */
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115
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116 static Lisp_Object Vinhibit_file_name_handlers;
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117 static Lisp_Object Vinhibit_file_name_operation;
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118
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563
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119 Lisp_Object Qfile_already_exists;
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428
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120
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121 Lisp_Object Qauto_save_hook;
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122 Lisp_Object Qauto_save_error;
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123 Lisp_Object Qauto_saving;
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124
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125 Lisp_Object Qcar_less_than_car;
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126
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127 Lisp_Object Qcompute_buffer_file_truename;
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128
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129 EXFUN (Frunning_temacs_p, 0);
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130
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563
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131 /* DATA can be anything acceptable to signal_error ().
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132 */
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133
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134 DOESNT_RETURN
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135 report_file_type_error (Lisp_Object errtype, Lisp_Object oserrmess,
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665
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136 const CIntbyte *string, Lisp_Object data)
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563
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137 {
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138 struct gcpro gcpro1;
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139 Lisp_Object errdata = build_error_data (NULL, data);
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140
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141 GCPRO1 (errdata);
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771
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142 errdata = Fcons (build_msg_string (string),
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563
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143 Fcons (oserrmess, errdata));
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144 signal_error_1 (errtype, errdata);
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145 UNGCPRO; /* not reached */
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146 }
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147
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148 DOESNT_RETURN
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149 report_error_with_errno (Lisp_Object errtype,
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665
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150 const CIntbyte *string, Lisp_Object data)
|
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563
|
151 {
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152 report_file_type_error (errtype, lisp_strerror (errno), string, data);
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153 }
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154
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428
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155 /* signal a file error when errno contains a meaningful value. */
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156
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157 DOESNT_RETURN
|
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665
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158 report_file_error (const CIntbyte *string, Lisp_Object data)
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428
|
159 {
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|
563
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160 report_error_with_errno (Qfile_error, string, data);
|
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428
|
161 }
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162
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163
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164 /* Just like strerror(3), except return a lisp string instead of char *.
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165 The string needs to be converted since it may be localized.
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771
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166 */
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428
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167 Lisp_Object
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168 lisp_strerror (int errnum)
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169 {
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771
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170 Extbyte *ret = strerror (errnum);
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171 if (!ret)
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172 {
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173 Intbyte ffff[99];
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174 qxesprintf (ffff, "Unknown error %d", errnum);
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175 return build_intstring (ffff);
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176 }
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177 return build_ext_string (ret, Qstrerror_encoding);
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428
|
178 }
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179
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180 static Lisp_Object
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181 close_file_unwind (Lisp_Object fd)
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182 {
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183 if (CONSP (fd))
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184 {
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185 if (INTP (XCAR (fd)))
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771
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186 retry_close (XINT (XCAR (fd)));
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428
|
187
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188 free_cons (XCONS (fd));
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189 }
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190 else
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771
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191 retry_close (XINT (fd));
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428
|
192
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193 return Qnil;
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194 }
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195
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196 static Lisp_Object
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197 delete_stream_unwind (Lisp_Object stream)
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198 {
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199 Lstream_delete (XLSTREAM (stream));
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200 return Qnil;
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201 }
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202
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203 /* Restore point, having saved it as a marker. */
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204
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205 static Lisp_Object
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206 restore_point_unwind (Lisp_Object point_marker)
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|
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207 {
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|
|
208 BUF_SET_PT (current_buffer, marker_position (point_marker));
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209 return Fset_marker (point_marker, Qnil, Qnil);
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210 }
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211
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212
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213 Lisp_Object Qexpand_file_name;
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|
214 Lisp_Object Qfile_truename;
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215 Lisp_Object Qsubstitute_in_file_name;
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216 Lisp_Object Qdirectory_file_name;
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217 Lisp_Object Qfile_name_directory;
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218 Lisp_Object Qfile_name_nondirectory;
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219 Lisp_Object Qunhandled_file_name_directory;
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220 Lisp_Object Qfile_name_as_directory;
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221 Lisp_Object Qcopy_file;
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222 Lisp_Object Qmake_directory_internal;
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223 Lisp_Object Qdelete_directory;
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224 Lisp_Object Qdelete_file;
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|
225 Lisp_Object Qrename_file;
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226 Lisp_Object Qadd_name_to_file;
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227 Lisp_Object Qmake_symbolic_link;
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228 Lisp_Object Qfile_exists_p;
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229 Lisp_Object Qfile_executable_p;
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230 Lisp_Object Qfile_readable_p;
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231 Lisp_Object Qfile_symlink_p;
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232 Lisp_Object Qfile_writable_p;
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233 Lisp_Object Qfile_directory_p;
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234 Lisp_Object Qfile_regular_p;
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235 Lisp_Object Qfile_accessible_directory_p;
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236 Lisp_Object Qfile_modes;
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237 Lisp_Object Qset_file_modes;
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238 Lisp_Object Qfile_newer_than_file_p;
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|
239 Lisp_Object Qinsert_file_contents;
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240 Lisp_Object Qwrite_region;
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241 Lisp_Object Qverify_visited_file_modtime;
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242 Lisp_Object Qset_visited_file_modtime;
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243
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244 /* If FILENAME is handled specially on account of its syntax,
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245 return its handler function. Otherwise, return nil. */
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246
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247 DEFUN ("find-file-name-handler", Ffind_file_name_handler, 1, 2, 0, /*
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|
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248 Return FILENAME's handler function for OPERATION, if it has one.
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|
249 Otherwise, return nil.
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250 A file name is handled if one of the regular expressions in
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251 `file-name-handler-alist' matches it.
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252
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253 If OPERATION equals `inhibit-file-name-operation', then we ignore
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254 any handlers that are members of `inhibit-file-name-handlers',
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255 but we still do run any other handlers. This lets handlers
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256 use the standard functions without calling themselves recursively.
|
|
751
|
257
|
|
|
258 Otherwise, OPERATION is the name of a funcall'able function.
|
|
428
|
259 */
|
|
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260 (filename, operation))
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|
|
261 {
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|
|
262 /* This function does not GC */
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|
|
263 /* This function can be called during GC */
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|
|
264 /* This function must not munge the match data. */
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|
265 Lisp_Object chain, inhibited_handlers;
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|
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266
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|
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267 CHECK_STRING (filename);
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268
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|
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269 if (EQ (operation, Vinhibit_file_name_operation))
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|
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270 inhibited_handlers = Vinhibit_file_name_handlers;
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|
271 else
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|
|
272 inhibited_handlers = Qnil;
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|
273
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|
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274 EXTERNAL_LIST_LOOP (chain, Vfile_name_handler_alist)
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|
|
275 {
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|
|
276 Lisp_Object elt = XCAR (chain);
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|
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277 if (CONSP (elt))
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278 {
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|
|
279 Lisp_Object string = XCAR (elt);
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|
|
280 if (STRINGP (string)
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281 && (fast_lisp_string_match (string, filename) >= 0))
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|
|
282 {
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|
283 Lisp_Object handler = XCDR (elt);
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|
|
284 if (NILP (Fmemq (handler, inhibited_handlers)))
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285 return handler;
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|
|
286 }
|
|
|
287 }
|
|
|
288 QUIT;
|
|
|
289 }
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|
|
290 return Qnil;
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|
|
291 }
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|
|
292
|
|
|
293 static Lisp_Object
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|
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294 call2_check_string (Lisp_Object fn, Lisp_Object arg0, Lisp_Object arg1)
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|
|
295 {
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|
|
296 /* This function can call lisp */
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|
|
297 Lisp_Object result = call2 (fn, arg0, arg1);
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|
|
298 CHECK_STRING (result);
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|
|
299 return result;
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|
|
300 }
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|
|
301
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|
|
302 static Lisp_Object
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303 call2_check_string_or_nil (Lisp_Object fn, Lisp_Object arg0, Lisp_Object arg1)
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|
|
304 {
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|
|
305 /* This function can call lisp */
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|
306 Lisp_Object result = call2 (fn, arg0, arg1);
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|
|
307 if (!NILP (result))
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|
|
308 CHECK_STRING (result);
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|
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309 return result;
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|
|
310 }
|
|
|
311
|
|
|
312 static Lisp_Object
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|
|
313 call3_check_string (Lisp_Object fn, Lisp_Object arg0,
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|
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314 Lisp_Object arg1, Lisp_Object arg2)
|
|
|
315 {
|
|
|
316 /* This function can call lisp */
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|
|
317 Lisp_Object result = call3 (fn, arg0, arg1, arg2);
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|
|
318 CHECK_STRING (result);
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|
|
319 return result;
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|
|
320 }
|
|
|
321
|
|
|
322
|
|
|
323 DEFUN ("file-name-directory", Ffile_name_directory, 1, 1, 0, /*
|
|
444
|
324 Return the directory component in file name FILENAME.
|
|
|
325 Return nil if FILENAME does not include a directory.
|
|
428
|
326 Otherwise return a directory spec.
|
|
|
327 Given a Unix syntax file name, returns a string ending in slash.
|
|
|
328 */
|
|
444
|
329 (filename))
|
|
428
|
330 {
|
|
442
|
331 /* This function can GC. GC checked 2000-07-28 ben */
|
|
771
|
332 /* This function synched with Emacs 21.0.103. */
|
|
665
|
333 Intbyte *beg;
|
|
|
334 Intbyte *p;
|
|
428
|
335 Lisp_Object handler;
|
|
|
336
|
|
444
|
337 CHECK_STRING (filename);
|
|
428
|
338
|
|
|
339 /* If the file name has special constructs in it,
|
|
|
340 call the corresponding file handler. */
|
|
444
|
341 handler = Ffind_file_name_handler (filename, Qfile_name_directory);
|
|
428
|
342 if (!NILP (handler))
|
|
444
|
343 return call2_check_string_or_nil (handler, Qfile_name_directory, filename);
|
|
428
|
344
|
|
|
345 #ifdef FILE_SYSTEM_CASE
|
|
444
|
346 filename = FILE_SYSTEM_CASE (filename);
|
|
428
|
347 #endif
|
|
444
|
348 beg = XSTRING_DATA (filename);
|
|
771
|
349 /* XEmacs: no need to alloca-copy here */
|
|
444
|
350 p = beg + XSTRING_LENGTH (filename);
|
|
428
|
351
|
|
771
|
352 while (p != beg && !IS_DIRECTORY_SEP (p[-1])
|
|
657
|
353 #ifdef WIN32_FILENAMES
|
|
771
|
354 /* only recognise drive specifier at the beginning */
|
|
|
355 && !(p[-1] == ':'
|
|
|
356 /* handle the "/:d:foo" and "/:foo" cases correctly */
|
|
|
357 && ((p == beg + 2 && !IS_DIRECTORY_SEP (*beg))
|
|
|
358 || (p == beg + 4 && IS_DIRECTORY_SEP (*beg))))
|
|
428
|
359 #endif
|
|
771
|
360 ) p--;
|
|
428
|
361
|
|
|
362 if (p == beg)
|
|
|
363 return Qnil;
|
|
442
|
364 #ifdef WIN32_NATIVE
|
|
428
|
365 /* Expansion of "c:" to drive and default directory. */
|
|
771
|
366 if (p[-1] == ':')
|
|
428
|
367 {
|
|
771
|
368 Intbyte *res;
|
|
|
369 Intbyte *wd = mswindows_getdcwd (toupper (*beg) - 'A' + 1);
|
|
|
370
|
|
|
371 res = alloca_array (Intbyte,
|
|
|
372 (wd ? qxestrlen (wd) : 0) + 10); /* go overboard */
|
|
|
373 if (p == beg + 4 && IS_DIRECTORY_SEP (*beg) && beg[1] == ':')
|
|
|
374 {
|
|
|
375 qxestrncpy (res, beg, 2);
|
|
|
376 beg += 2;
|
|
|
377 }
|
|
|
378
|
|
|
379 if (wd)
|
|
428
|
380 {
|
|
771
|
381 qxestrcat (res, wd);
|
|
|
382 if (!IS_DIRECTORY_SEP (res[qxestrlen (res) - 1]))
|
|
|
383 qxestrcat (res, (Intbyte *) "/");
|
|
428
|
384 beg = res;
|
|
771
|
385 p = beg + qxestrlen (beg);
|
|
428
|
386 }
|
|
771
|
387 if (wd)
|
|
|
388 xfree (wd);
|
|
428
|
389 }
|
|
771
|
390
|
|
|
391 #if 0 /* No! This screws up efs, which calls file-name-directory on URL's
|
|
|
392 and expects the slashes to be left alone. This is here because of
|
|
|
393 an analogous call in FSF 21. */
|
|
|
394 {
|
|
|
395 Bytecount len = p - beg;
|
|
|
396 Intbyte *newbeg = alloca_intbytes (len + 1);
|
|
|
397 Lisp_Object return_me;
|
|
|
398
|
|
|
399 qxestrncpy (newbeg, beg, len);
|
|
|
400 newbeg[len] = '\0';
|
|
|
401 newbeg = mswindows_canonicalize_filename (newbeg);
|
|
|
402 return_me = build_intstring (newbeg);
|
|
|
403 xfree (newbeg);
|
|
|
404 return return_me;
|
|
|
405 }
|
|
|
406 #endif
|
|
|
407 #endif /* not WIN32_NATIVE */
|
|
428
|
408 return make_string (beg, p - beg);
|
|
|
409 }
|
|
|
410
|
|
|
411 DEFUN ("file-name-nondirectory", Ffile_name_nondirectory, 1, 1, 0, /*
|
|
444
|
412 Return file name FILENAME sans its directory.
|
|
428
|
413 For example, in a Unix-syntax file name,
|
|
|
414 this is everything after the last slash,
|
|
|
415 or the entire name if it contains no slash.
|
|
|
416 */
|
|
444
|
417 (filename))
|
|
428
|
418 {
|
|
442
|
419 /* This function can GC. GC checked 2000-07-28 ben */
|
|
771
|
420 /* This function synched with Emacs 21.0.103. */
|
|
665
|
421 Intbyte *beg, *p, *end;
|
|
428
|
422 Lisp_Object handler;
|
|
|
423
|
|
444
|
424 CHECK_STRING (filename);
|
|
428
|
425
|
|
|
426 /* If the file name has special constructs in it,
|
|
|
427 call the corresponding file handler. */
|
|
444
|
428 handler = Ffind_file_name_handler (filename, Qfile_name_nondirectory);
|
|
428
|
429 if (!NILP (handler))
|
|
444
|
430 return call2_check_string (handler, Qfile_name_nondirectory, filename);
|
|
|
431
|
|
|
432 beg = XSTRING_DATA (filename);
|
|
|
433 end = p = beg + XSTRING_LENGTH (filename);
|
|
428
|
434
|
|
771
|
435 while (p != beg && !IS_DIRECTORY_SEP (p[-1])
|
|
657
|
436 #ifdef WIN32_FILENAMES
|
|
771
|
437 /* only recognise drive specifier at beginning */
|
|
|
438 && !(p[-1] == ':'
|
|
|
439 /* handle the "/:d:foo" case correctly */
|
|
|
440 && (p == beg + 2 || (p == beg + 4 && IS_DIRECTORY_SEP (*beg))))
|
|
428
|
441 #endif
|
|
771
|
442 )
|
|
|
443 p--;
|
|
428
|
444
|
|
|
445 return make_string (p, end - p);
|
|
|
446 }
|
|
|
447
|
|
|
448 DEFUN ("unhandled-file-name-directory", Funhandled_file_name_directory, 1, 1, 0, /*
|
|
|
449 Return a directly usable directory name somehow associated with FILENAME.
|
|
|
450 A `directly usable' directory name is one that may be used without the
|
|
|
451 intervention of any file handler.
|
|
|
452 If FILENAME is a directly usable file itself, return
|
|
|
453 \(file-name-directory FILENAME).
|
|
|
454 The `call-process' and `start-process' functions use this function to
|
|
|
455 get a current directory to run processes in.
|
|
|
456 */
|
|
444
|
457 (filename))
|
|
428
|
458 {
|
|
442
|
459 /* This function can GC. GC checked 2000-07-28 ben */
|
|
428
|
460 Lisp_Object handler;
|
|
|
461
|
|
|
462 /* If the file name has special constructs in it,
|
|
|
463 call the corresponding file handler. */
|
|
|
464 handler = Ffind_file_name_handler (filename, Qunhandled_file_name_directory);
|
|
|
465 if (!NILP (handler))
|
|
|
466 return call2 (handler, Qunhandled_file_name_directory,
|
|
|
467 filename);
|
|
|
468
|
|
|
469 return Ffile_name_directory (filename);
|
|
|
470 }
|
|
|
471
|
|
|
472
|
|
771
|
473 static Intbyte *
|
|
|
474 file_name_as_directory (Intbyte *out, Intbyte *in)
|
|
428
|
475 {
|
|
442
|
476 /* This function cannot GC */
|
|
771
|
477 int size = qxestrlen (in);
|
|
428
|
478
|
|
|
479 if (size == 0)
|
|
|
480 {
|
|
|
481 out[0] = '.';
|
|
|
482 out[1] = DIRECTORY_SEP;
|
|
|
483 out[2] = '\0';
|
|
|
484 }
|
|
|
485 else
|
|
|
486 {
|
|
771
|
487 qxestrcpy (out, in);
|
|
428
|
488 /* Append a slash if necessary */
|
|
|
489 if (!IS_ANY_SEP (out[size-1]))
|
|
|
490 {
|
|
|
491 out[size] = DIRECTORY_SEP;
|
|
|
492 out[size + 1] = '\0';
|
|
|
493 }
|
|
|
494 }
|
|
|
495 return out;
|
|
|
496 }
|
|
|
497
|
|
|
498 DEFUN ("file-name-as-directory", Ffile_name_as_directory, 1, 1, 0, /*
|
|
|
499 Return a string representing file FILENAME interpreted as a directory.
|
|
|
500 This operation exists because a directory is also a file, but its name as
|
|
|
501 a directory is different from its name as a file.
|
|
|
502 The result can be used as the value of `default-directory'
|
|
|
503 or passed as second argument to `expand-file-name'.
|
|
|
504 For a Unix-syntax file name, just appends a slash,
|
|
|
505 except for (file-name-as-directory \"\") => \"./\".
|
|
|
506 */
|
|
444
|
507 (filename))
|
|
428
|
508 {
|
|
442
|
509 /* This function can GC. GC checked 2000-07-28 ben */
|
|
771
|
510 Intbyte *buf;
|
|
428
|
511 Lisp_Object handler;
|
|
|
512
|
|
444
|
513 CHECK_STRING (filename);
|
|
428
|
514
|
|
|
515 /* If the file name has special constructs in it,
|
|
|
516 call the corresponding file handler. */
|
|
444
|
517 handler = Ffind_file_name_handler (filename, Qfile_name_as_directory);
|
|
428
|
518 if (!NILP (handler))
|
|
444
|
519 return call2_check_string (handler, Qfile_name_as_directory, filename);
|
|
|
520
|
|
771
|
521 buf = alloca_intbytes (XSTRING_LENGTH (filename) + 10);
|
|
|
522 return build_intstring (file_name_as_directory (buf, XSTRING_DATA (filename)));
|
|
428
|
523 }
|
|
|
524
|
|
|
525 /*
|
|
|
526 * Convert from directory name to filename.
|
|
|
527 * On UNIX, it's simple: just make sure there isn't a terminating /
|
|
|
528 *
|
|
|
529 * Value is nonzero if the string output is different from the input.
|
|
|
530 */
|
|
|
531
|
|
|
532 static int
|
|
771
|
533 directory_file_name (const Intbyte *src, Intbyte *dst)
|
|
428
|
534 {
|
|
442
|
535 /* This function cannot GC */
|
|
771
|
536 long slen = qxestrlen (src);
|
|
428
|
537 /* Process as Unix format: just remove any final slash.
|
|
|
538 But leave "/" unchanged; do not change it to "". */
|
|
771
|
539 qxestrcpy (dst, src);
|
|
428
|
540 if (slen > 1
|
|
|
541 && IS_DIRECTORY_SEP (dst[slen - 1])
|
|
657
|
542 #ifdef WIN32_FILENAMES
|
|
428
|
543 && !IS_ANY_SEP (dst[slen - 2])
|
|
657
|
544 #endif /* WIN32_FILENAMES */
|
|
428
|
545 )
|
|
|
546 dst[slen - 1] = 0;
|
|
|
547 return 1;
|
|
|
548 }
|
|
|
549
|
|
|
550 DEFUN ("directory-file-name", Fdirectory_file_name, 1, 1, 0, /*
|
|
444
|
551 Return the file name of the directory named DIRECTORY.
|
|
|
552 This is the name of the file that holds the data for the directory.
|
|
428
|
553 This operation exists because a directory is also a file, but its name as
|
|
|
554 a directory is different from its name as a file.
|
|
|
555 In Unix-syntax, this function just removes the final slash.
|
|
|
556 */
|
|
|
557 (directory))
|
|
|
558 {
|
|
442
|
559 /* This function can GC. GC checked 2000-07-28 ben */
|
|
771
|
560 Intbyte *buf;
|
|
428
|
561 Lisp_Object handler;
|
|
|
562
|
|
|
563 CHECK_STRING (directory);
|
|
|
564
|
|
|
565 #if 0 /* #### WTF? */
|
|
|
566 if (NILP (directory))
|
|
|
567 return Qnil;
|
|
|
568 #endif
|
|
|
569
|
|
|
570 /* If the file name has special constructs in it,
|
|
|
571 call the corresponding file handler. */
|
|
|
572 handler = Ffind_file_name_handler (directory, Qdirectory_file_name);
|
|
|
573 if (!NILP (handler))
|
|
|
574 return call2_check_string (handler, Qdirectory_file_name, directory);
|
|
771
|
575 buf = (Intbyte *) alloca (XSTRING_LENGTH (directory) + 20);
|
|
|
576 directory_file_name (XSTRING_DATA (directory), buf);
|
|
|
577 return build_intstring (buf);
|
|
428
|
578 }
|
|
|
579
|
|
|
580 /* Fmake_temp_name used to be a simple wrapper around mktemp(), but it
|
|
|
581 proved too broken for our purposes (it supported only 26 or 62
|
|
|
582 unique names under some implementations). For example, this
|
|
|
583 arbitrary limit broke generation of Gnus Incoming* files.
|
|
|
584
|
|
|
585 This implementation is better than what one usually finds in libc.
|
|
|
586 --hniksic */
|
|
|
587
|
|
442
|
588 static unsigned int temp_name_rand;
|
|
|
589
|
|
428
|
590 DEFUN ("make-temp-name", Fmake_temp_name, 1, 1, 0, /*
|
|
442
|
591 Generate a temporary file name starting with PREFIX.
|
|
428
|
592 The Emacs process number forms part of the result, so there is no
|
|
|
593 danger of generating a name being used by another process.
|
|
|
594
|
|
|
595 In addition, this function makes an attempt to choose a name that
|
|
|
596 does not specify an existing file. To make this work, PREFIX should
|
|
|
597 be an absolute file name.
|
|
|
598 */
|
|
|
599 (prefix))
|
|
|
600 {
|
|
442
|
601 static const char tbl[64] =
|
|
|
602 {
|
|
428
|
603 'A','B','C','D','E','F','G','H',
|
|
|
604 'I','J','K','L','M','N','O','P',
|
|
|
605 'Q','R','S','T','U','V','W','X',
|
|
|
606 'Y','Z','a','b','c','d','e','f',
|
|
|
607 'g','h','i','j','k','l','m','n',
|
|
|
608 'o','p','q','r','s','t','u','v',
|
|
|
609 'w','x','y','z','0','1','2','3',
|
|
442
|
610 '4','5','6','7','8','9','-','_'
|
|
|
611 };
|
|
428
|
612
|
|
|
613 Bytecount len;
|
|
665
|
614 Intbyte *p, *data;
|
|
428
|
615
|
|
|
616 CHECK_STRING (prefix);
|
|
|
617
|
|
|
618 /* I was tempted to apply Fexpand_file_name on PREFIX here, but it's
|
|
|
619 a bad idea because:
|
|
|
620
|
|
|
621 1) It might change the prefix, so the resulting string might not
|
|
|
622 begin with PREFIX. This violates the principle of least
|
|
|
623 surprise.
|
|
|
624
|
|
|
625 2) It breaks under many unforeseeable circumstances, such as with
|
|
|
626 the code that uses (make-temp-name "") instead of
|
|
|
627 (make-temp-name "./").
|
|
|
628
|
|
|
629 3) It might yield unexpected (to stat(2)) results in the presence
|
|
|
630 of EFS and file name handlers. */
|
|
|
631
|
|
|
632 len = XSTRING_LENGTH (prefix);
|
|
771
|
633 data = alloca_intbytes (len + 7);
|
|
428
|
634 memcpy (data, XSTRING_DATA (prefix), len);
|
|
|
635 p = data + len;
|
|
771
|
636 p[6] = '\0';
|
|
428
|
637
|
|
|
638 /* VAL is created by adding 6 characters to PREFIX. The first three
|
|
|
639 are the PID of this process, in base 64, and the second three are
|
|
442
|
640 a pseudo-random number seeded from process startup time. This
|
|
|
641 ensures 262144 unique file names per PID per PREFIX per machine. */
|
|
|
642
|
|
|
643 {
|
|
771
|
644 unsigned int pid = (unsigned int) qxe_getpid ();
|
|
442
|
645 *p++ = tbl[(pid >> 0) & 63];
|
|
|
646 *p++ = tbl[(pid >> 6) & 63];
|
|
|
647 *p++ = tbl[(pid >> 12) & 63];
|
|
|
648 }
|
|
428
|
649
|
|
|
650 /* Here we try to minimize useless stat'ing when this function is
|
|
|
651 invoked many times successively with the same PREFIX. We achieve
|
|
442
|
652 this by using a very pseudo-random number generator to generate
|
|
|
653 file names unique to this process, with a very long cycle. */
|
|
428
|
654
|
|
|
655 while (1)
|
|
|
656 {
|
|
|
657 struct stat ignored;
|
|
442
|
658
|
|
|
659 p[0] = tbl[(temp_name_rand >> 0) & 63];
|
|
|
660 p[1] = tbl[(temp_name_rand >> 6) & 63];
|
|
|
661 p[2] = tbl[(temp_name_rand >> 12) & 63];
|
|
428
|
662
|
|
|
663 /* Poor man's congruential RN generator. Replace with ++count
|
|
|
664 for debugging. */
|
|
442
|
665 temp_name_rand += 25229;
|
|
|
666 temp_name_rand %= 225307;
|
|
428
|
667
|
|
|
668 QUIT;
|
|
|
669
|
|
771
|
670 if (qxe_stat (data, &ignored) < 0)
|
|
428
|
671 {
|
|
|
672 /* We want to return only if errno is ENOENT. */
|
|
|
673 if (errno == ENOENT)
|
|
771
|
674 return make_string (data, len + 6);
|
|
428
|
675
|
|
|
676 /* The error here is dubious, but there is little else we
|
|
|
677 can do. The alternatives are to return nil, which is
|
|
|
678 as bad as (and in many cases worse than) throwing the
|
|
|
679 error, or to ignore the error, which will likely result
|
|
|
680 in inflooping. */
|
|
|
681 report_file_error ("Cannot create temporary name for prefix",
|
|
563
|
682 prefix);
|
|
428
|
683 return Qnil; /* not reached */
|
|
|
684 }
|
|
|
685 }
|
|
|
686 }
|
|
|
687
|
|
|
688
|
|
771
|
689
|
|
428
|
690 DEFUN ("expand-file-name", Fexpand_file_name, 1, 2, 0, /*
|
|
|
691 Convert filename NAME to absolute, and canonicalize it.
|
|
|
692 Second arg DEFAULT-DIRECTORY is directory to start with if NAME is relative
|
|
|
693 (does not start with slash); if DEFAULT-DIRECTORY is nil or missing,
|
|
444
|
694 the current buffer's value of `default-directory' is used.
|
|
428
|
695 File name components that are `.' are removed, and
|
|
|
696 so are file name components followed by `..', along with the `..' itself;
|
|
|
697 note that these simplifications are done without checking the resulting
|
|
|
698 file names in the file system.
|
|
|
699 An initial `~/' expands to your home directory.
|
|
|
700 An initial `~USER/' expands to USER's home directory.
|
|
|
701 See also the function `substitute-in-file-name'.
|
|
|
702 */
|
|
|
703 (name, default_directory))
|
|
|
704 {
|
|
771
|
705 /* This function can GC. GC-checked 2000-11-18.
|
|
|
706 This function synched with Emacs 21.0.103. */
|
|
665
|
707 Intbyte *nm;
|
|
|
708
|
|
|
709 Intbyte *newdir, *p, *o;
|
|
428
|
710 int tlen;
|
|
665
|
711 Intbyte *target;
|
|
657
|
712 #ifdef WIN32_FILENAMES
|
|
428
|
713 int drive = 0;
|
|
|
714 int collapse_newdir = 1;
|
|
771
|
715 /* XEmacs note: This concerns the special '/:' syntax for preventing
|
|
|
716 wildcards and such. We don't support this currently but I'm
|
|
|
717 keeping the code here in case we do. */
|
|
|
718 int is_escaped = 0;
|
|
657
|
719 #endif
|
|
|
720 #ifndef WIN32_NATIVE
|
|
428
|
721 struct passwd *pw;
|
|
771
|
722 #endif
|
|
428
|
723 int length;
|
|
446
|
724 Lisp_Object handler = Qnil;
|
|
|
725 struct gcpro gcpro1, gcpro2, gcpro3;
|
|
442
|
726
|
|
|
727 /* both of these get set below */
|
|
446
|
728 GCPRO3 (name, default_directory, handler);
|
|
428
|
729
|
|
|
730 CHECK_STRING (name);
|
|
|
731
|
|
|
732 /* If the file name has special constructs in it,
|
|
|
733 call the corresponding file handler. */
|
|
|
734 handler = Ffind_file_name_handler (name, Qexpand_file_name);
|
|
|
735 if (!NILP (handler))
|
|
446
|
736 RETURN_UNGCPRO (call3_check_string (handler, Qexpand_file_name,
|
|
|
737 name, default_directory));
|
|
428
|
738
|
|
|
739 /* Use the buffer's default-directory if DEFAULT_DIRECTORY is omitted. */
|
|
|
740 if (NILP (default_directory))
|
|
|
741 default_directory = current_buffer->directory;
|
|
|
742 if (! STRINGP (default_directory))
|
|
771
|
743 #ifdef WIN32_NATIVE
|
|
|
744 default_directory = build_string ("C:\\");
|
|
|
745 #else
|
|
428
|
746 default_directory = build_string ("/");
|
|
771
|
747 #endif
|
|
428
|
748
|
|
|
749 if (!NILP (default_directory))
|
|
|
750 {
|
|
|
751 handler = Ffind_file_name_handler (default_directory, Qexpand_file_name);
|
|
|
752 if (!NILP (handler))
|
|
446
|
753 RETURN_UNGCPRO (call3 (handler, Qexpand_file_name,
|
|
|
754 name, default_directory));
|
|
428
|
755 }
|
|
|
756
|
|
|
757 o = XSTRING_DATA (default_directory);
|
|
|
758
|
|
|
759 /* Make sure DEFAULT_DIRECTORY is properly expanded.
|
|
|
760 It would be better to do this down below where we actually use
|
|
|
761 default_directory. Unfortunately, calling Fexpand_file_name recursively
|
|
|
762 could invoke GC, and the strings might be relocated. This would
|
|
|
763 be annoying because we have pointers into strings lying around
|
|
|
764 that would need adjusting, and people would add new pointers to
|
|
|
765 the code and forget to adjust them, resulting in intermittent bugs.
|
|
|
766 Putting this call here avoids all that crud.
|
|
|
767
|
|
|
768 The EQ test avoids infinite recursion. */
|
|
|
769 if (! NILP (default_directory) && !EQ (default_directory, name)
|
|
|
770 /* Save time in some common cases - as long as default_directory
|
|
|
771 is not relative, it can be canonicalized with name below (if it
|
|
|
772 is needed at all) without requiring it to be expanded now. */
|
|
657
|
773 #ifdef WIN32_FILENAMES
|
|
442
|
774 /* Detect Windows file names with drive specifiers. */
|
|
428
|
775 && ! (IS_DRIVE (o[0]) && (IS_DEVICE_SEP (o[1]) && IS_DIRECTORY_SEP (o[2])))
|
|
|
776 /* Detect Windows file names in UNC format. */
|
|
|
777 && ! (IS_DIRECTORY_SEP (o[0]) && IS_DIRECTORY_SEP (o[1]))
|
|
657
|
778 #endif /* not WIN32_FILENAMES */
|
|
|
779 #ifndef WIN32_NATIVE
|
|
428
|
780 /* Detect Unix absolute file names (/... alone is not absolute on
|
|
442
|
781 Windows). */
|
|
428
|
782 && ! (IS_DIRECTORY_SEP (o[0]))
|
|
442
|
783 #endif /* not WIN32_NATIVE */
|
|
428
|
784 )
|
|
442
|
785
|
|
|
786 default_directory = Fexpand_file_name (default_directory, Qnil);
|
|
428
|
787
|
|
|
788 #ifdef FILE_SYSTEM_CASE
|
|
|
789 name = FILE_SYSTEM_CASE (name);
|
|
|
790 #endif
|
|
|
791
|
|
|
792 /* #### dmoore - this is ugly, clean this up. Looks like nm pointing
|
|
|
793 into name should be safe during all of this, though. */
|
|
|
794 nm = XSTRING_DATA (name);
|
|
|
795
|
|
657
|
796 #ifdef WIN32_FILENAMES
|
|
428
|
797 /* We will force directory separators to be either all \ or /, so make
|
|
|
798 a local copy to modify, even if there ends up being no change. */
|
|
771
|
799 nm = qxestrcpy (alloca_intbytes (qxestrlen (nm) + 1), nm);
|
|
|
800
|
|
|
801 /* Note if special escape prefix is present, but remove for now. */
|
|
|
802 if (nm[0] == '/' && nm[1] == ':')
|
|
|
803 {
|
|
|
804 is_escaped = 1;
|
|
|
805 nm += 2;
|
|
|
806 }
|
|
428
|
807
|
|
|
808 /* Find and remove drive specifier if present; this makes nm absolute
|
|
|
809 even if the rest of the name appears to be relative. */
|
|
|
810 {
|
|
771
|
811 Intbyte *colon = qxestrrchr (nm, ':');
|
|
428
|
812
|
|
|
813 if (colon)
|
|
657
|
814 {
|
|
428
|
815 /* Only recognize colon as part of drive specifier if there is a
|
|
|
816 single alphabetic character preceding the colon (and if the
|
|
|
817 character before the drive letter, if present, is a directory
|
|
|
818 separator); this is to support the remote system syntax used by
|
|
|
819 ange-ftp, and the "po:username" syntax for POP mailboxes. */
|
|
|
820 look_again:
|
|
|
821 if (nm == colon)
|
|
|
822 nm++;
|
|
|
823 else if (IS_DRIVE (colon[-1])
|
|
|
824 && (colon == nm + 1 || IS_DIRECTORY_SEP (colon[-2])))
|
|
|
825 {
|
|
|
826 drive = colon[-1];
|
|
|
827 nm = colon + 1;
|
|
|
828 }
|
|
|
829 else
|
|
|
830 {
|
|
|
831 while (--colon >= nm)
|
|
|
832 if (colon[0] == ':')
|
|
|
833 goto look_again;
|
|
|
834 }
|
|
657
|
835 }
|
|
428
|
836 }
|
|
|
837
|
|
|
838 /* If we see "c://somedir", we want to strip the first slash after the
|
|
|
839 colon when stripping the drive letter. Otherwise, this expands to
|
|
|
840 "//somedir". */
|
|
|
841 if (drive && IS_DIRECTORY_SEP (nm[0]) && IS_DIRECTORY_SEP (nm[1]))
|
|
|
842 nm++;
|
|
657
|
843 #endif /* WIN32_FILENAMES */
|
|
428
|
844
|
|
771
|
845 #ifdef WIN32_FILENAMES
|
|
|
846 /* Discard any previous drive specifier if nm is now in UNC format. */
|
|
|
847 if (IS_DIRECTORY_SEP (nm[0]) && IS_DIRECTORY_SEP (nm[1]))
|
|
|
848 {
|
|
|
849 drive = 0;
|
|
|
850 }
|
|
|
851 #endif
|
|
|
852
|
|
428
|
853 /* If nm is absolute, look for /./ or /../ sequences; if none are
|
|
|
854 found, we can probably return right away. We will avoid allocating
|
|
|
855 a new string if name is already fully expanded. */
|
|
|
856 if (
|
|
|
857 IS_DIRECTORY_SEP (nm[0])
|
|
442
|
858 #ifdef WIN32_NATIVE
|
|
771
|
859 && (drive || IS_DIRECTORY_SEP (nm[1])) && !is_escaped
|
|
428
|
860 #endif
|
|
|
861 )
|
|
|
862 {
|
|
|
863 /* If it turns out that the filename we want to return is just a
|
|
|
864 suffix of FILENAME, we don't need to go through and edit
|
|
|
865 things; we just need to construct a new string using data
|
|
|
866 starting at the middle of FILENAME. If we set lose to a
|
|
|
867 non-zero value, that means we've discovered that we can't do
|
|
|
868 that cool trick. */
|
|
|
869 int lose = 0;
|
|
|
870
|
|
|
871 p = nm;
|
|
|
872 while (*p)
|
|
|
873 {
|
|
|
874 /* Since we know the name is absolute, we can assume that each
|
|
|
875 element starts with a "/". */
|
|
|
876
|
|
|
877 /* "." and ".." are hairy. */
|
|
|
878 if (IS_DIRECTORY_SEP (p[0])
|
|
|
879 && p[1] == '.'
|
|
|
880 && (IS_DIRECTORY_SEP (p[2])
|
|
|
881 || p[2] == 0
|
|
|
882 || (p[2] == '.' && (IS_DIRECTORY_SEP (p[3])
|
|
|
883 || p[3] == 0))))
|
|
|
884 lose = 1;
|
|
771
|
885 /* We want to replace multiple `/' in a row with a single
|
|
|
886 slash. */
|
|
|
887 else if (p > nm
|
|
|
888 && IS_DIRECTORY_SEP (p[0])
|
|
|
889 && IS_DIRECTORY_SEP (p[1]))
|
|
|
890 lose = 1;
|
|
428
|
891 p++;
|
|
|
892 }
|
|
|
893 if (!lose)
|
|
|
894 {
|
|
657
|
895 #ifdef WIN32_FILENAMES
|
|
|
896 if (drive || IS_DIRECTORY_SEP (nm[1]))
|
|
428
|
897 {
|
|
771
|
898 Intbyte *newnm;
|
|
|
899
|
|
657
|
900 if (IS_DIRECTORY_SEP (nm[1]))
|
|
|
901 {
|
|
771
|
902 newnm = mswindows_canonicalize_filename (nm);
|
|
|
903 if (qxestrcmp (newnm, XSTRING_DATA (name)) != 0)
|
|
|
904 name = build_intstring (newnm);
|
|
657
|
905 }
|
|
771
|
906 else
|
|
657
|
907 {
|
|
771
|
908 /* drive must be set, so this is okay */
|
|
|
909 newnm = mswindows_canonicalize_filename (nm - 2);
|
|
|
910 if (qxestrcmp (newnm, XSTRING_DATA (name)) != 0)
|
|
|
911 {
|
|
|
912 name = build_intstring (newnm);
|
|
|
913 XSTRING_DATA (name)[0] = DRIVE_LETTER (drive);
|
|
|
914 XSTRING_DATA (name)[1] = ':';
|
|
|
915 }
|
|
657
|
916 }
|
|
771
|
917 xfree (newnm);
|
|
657
|
918 RETURN_UNGCPRO (name);
|
|
428
|
919 }
|
|
771
|
920 #endif /* WIN32_FILENAMES */
|
|
657
|
921 #ifndef WIN32_NATIVE
|
|
428
|
922 if (nm == XSTRING_DATA (name))
|
|
442
|
923 RETURN_UNGCPRO (name);
|
|
771
|
924 RETURN_UNGCPRO (build_intstring (nm));
|
|
442
|
925 #endif /* not WIN32_NATIVE */
|
|
428
|
926 }
|
|
|
927 }
|
|
|
928
|
|
|
929 /* At this point, nm might or might not be an absolute file name. We
|
|
|
930 need to expand ~ or ~user if present, otherwise prefix nm with
|
|
|
931 default_directory if nm is not absolute, and finally collapse /./
|
|
|
932 and /foo/../ sequences.
|
|
|
933
|
|
|
934 We set newdir to be the appropriate prefix if one is needed:
|
|
|
935 - the relevant user directory if nm starts with ~ or ~user
|
|
|
936 - the specified drive's working dir (DOS/NT only) if nm does not
|
|
|
937 start with /
|
|
|
938 - the value of default_directory.
|
|
|
939
|
|
|
940 Note that these prefixes are not guaranteed to be absolute (except
|
|
|
941 for the working dir of a drive). Therefore, to ensure we always
|
|
|
942 return an absolute name, if the final prefix is not absolute we
|
|
|
943 append it to the current working directory. */
|
|
|
944
|
|
|
945 newdir = 0;
|
|
|
946
|
|
|
947 if (nm[0] == '~') /* prefix ~ */
|
|
|
948 {
|
|
|
949 if (IS_DIRECTORY_SEP (nm[1])
|
|
|
950 || nm[1] == 0) /* ~ by itself */
|
|
|
951 {
|
|
771
|
952 Intbyte *homedir = get_home_directory ();
|
|
|
953
|
|
|
954 if (!homedir)
|
|
665
|
955 newdir = (Intbyte *) "";
|
|
428
|
956 else
|
|
771
|
957 newdir = homedir;
|
|
428
|
958
|
|
|
959 nm++;
|
|
657
|
960 #ifdef WIN32_FILENAMES
|
|
428
|
961 collapse_newdir = 0;
|
|
|
962 #endif
|
|
|
963 }
|
|
|
964 else /* ~user/filename */
|
|
|
965 {
|
|
|
966 for (p = nm; *p && (!IS_DIRECTORY_SEP (*p)); p++)
|
|
|
967 DO_NOTHING;
|
|
665
|
968 o = (Intbyte *) alloca (p - nm + 1);
|
|
771
|
969 memcpy (o, nm, p - nm);
|
|
428
|
970 o [p - nm] = 0;
|
|
|
971
|
|
558
|
972 /* #### While NT is single-user (for the moment) you still
|
|
|
973 can have multiple user profiles users defined, each with
|
|
|
974 its HOME. So maybe possibly we should think about handling
|
|
|
975 ~user. --ben */
|
|
|
976 #ifndef WIN32_NATIVE
|
|
442
|
977 #ifdef CYGWIN
|
|
771
|
978 {
|
|
|
979 Intbyte *user;
|
|
|
980
|
|
|
981 if ((user = user_login_name (NULL)) != NULL)
|
|
|
982 {
|
|
|
983 /* Does the user login name match the ~name? */
|
|
|
984 if (qxestrcmp (user, o + 1) == 0)
|
|
|
985 {
|
|
|
986 newdir = get_home_directory ();
|
|
|
987 nm = p;
|
|
|
988 }
|
|
|
989 }
|
|
|
990 }
|
|
|
991 if (!newdir)
|
|
428
|
992 {
|
|
442
|
993 #endif /* CYGWIN */
|
|
428
|
994 /* Jamie reports that getpwnam() can get wedged by SIGIO/SIGALARM
|
|
|
995 occurring in it. (It can call select()). */
|
|
|
996 slow_down_interrupts ();
|
|
771
|
997 pw = (struct passwd *) qxe_getpwnam (o + 1);
|
|
428
|
998 speed_up_interrupts ();
|
|
|
999 if (pw)
|
|
|
1000 {
|
|
771
|
1001 newdir = (Intbyte *) pw->pw_dir;
|
|
428
|
1002 nm = p;
|
|
771
|
1003 /* FSF: if WIN32_NATIVE, collapse_newdir = 0;
|
|
|
1004 not possible here. */
|
|
428
|
1005 }
|
|
442
|
1006 #ifdef CYGWIN
|
|
428
|
1007 }
|
|
|
1008 #endif
|
|
442
|
1009 #endif /* not WIN32_NATIVE */
|
|
428
|
1010
|
|
|
1011 /* If we don't find a user of that name, leave the name
|
|
|
1012 unchanged; don't move nm forward to p. */
|
|
|
1013 }
|
|
|
1014 }
|
|
|
1015
|
|
657
|
1016 #ifdef WIN32_FILENAMES
|
|
428
|
1017 /* On DOS and Windows, nm is absolute if a drive name was specified;
|
|
|
1018 use the drive's current directory as the prefix if needed. */
|
|
|
1019 if (!newdir && drive)
|
|
|
1020 {
|
|
657
|
1021 #ifdef WIN32_NATIVE
|
|
428
|
1022 /* Get default directory if needed to make nm absolute. */
|
|
|
1023 if (!IS_DIRECTORY_SEP (nm[0]))
|
|
|
1024 {
|
|
771
|
1025 Intbyte *newcwd = mswindows_getdcwd (toupper (drive) - 'A' + 1);
|
|
|
1026 if (newcwd)
|
|
|
1027 {
|
|
|
1028 INTBYTE_STRING_TO_ALLOCA (newcwd, newdir);
|
|
|
1029 xfree (newcwd);
|
|
|
1030 }
|
|
|
1031 else
|
|
428
|
1032 newdir = NULL;
|
|
|
1033 }
|
|
657
|
1034 #endif /* WIN32_NATIVE */
|
|
428
|
1035 if (!newdir)
|
|
|
1036 {
|
|
|
1037 /* Either nm starts with /, or drive isn't mounted. */
|
|
665
|
1038 newdir = (Intbyte *) alloca (4);
|
|
428
|
1039 newdir[0] = DRIVE_LETTER (drive);
|
|
|
1040 newdir[1] = ':';
|
|
|
1041 newdir[2] = '/';
|
|
|
1042 newdir[3] = 0;
|
|
|
1043 }
|
|
|
1044 }
|
|
657
|
1045 #endif /* WIN32_FILENAMES */
|
|
428
|
1046
|
|
|
1047 /* Finally, if no prefix has been specified and nm is not absolute,
|
|
|
1048 then it must be expanded relative to default_directory. */
|
|
|
1049
|
|
|
1050 if (1
|
|
442
|
1051 #ifndef WIN32_NATIVE
|
|
428
|
1052 /* /... alone is not absolute on DOS and Windows. */
|
|
|
1053 && !IS_DIRECTORY_SEP (nm[0])
|
|
657
|
1054 #endif
|
|
|
1055 #ifdef WIN32_FILENAMES
|
|
428
|
1056 && !(IS_DIRECTORY_SEP (nm[0]) && IS_DIRECTORY_SEP (nm[1]))
|
|
|
1057 #endif
|
|
|
1058 && !newdir)
|
|
|
1059 {
|
|
|
1060 newdir = XSTRING_DATA (default_directory);
|
|
771
|
1061 #ifdef WIN32_FILENAMES
|
|
|
1062 /* Note if special escape prefix is present, but remove for now. */
|
|
|
1063 if (newdir[0] == '/' && newdir[1] == ':')
|
|
|
1064 {
|
|
|
1065 is_escaped = 1;
|
|
|
1066 newdir += 2;
|
|
|
1067 }
|
|
|
1068 #endif
|
|
428
|
1069 }
|
|
|
1070
|
|
657
|
1071 #ifdef WIN32_FILENAMES
|
|
428
|
1072 if (newdir)
|
|
|
1073 {
|
|
|
1074 /* First ensure newdir is an absolute name. */
|
|
|
1075 if (
|
|
442
|
1076 /* Detect Windows file names with drive specifiers. */
|
|
428
|
1077 ! (IS_DRIVE (newdir[0])
|
|
|
1078 && IS_DEVICE_SEP (newdir[1]) && IS_DIRECTORY_SEP (newdir[2]))
|
|
|
1079 /* Detect Windows file names in UNC format. */
|
|
|
1080 && ! (IS_DIRECTORY_SEP (newdir[0]) && IS_DIRECTORY_SEP (newdir[1]))
|
|
771
|
1081 /* XEmacs: added these two lines: Detect drive spec by itself */
|
|
428
|
1082 && ! (IS_DEVICE_SEP (newdir[1]) && newdir[2] == 0)
|
|
657
|
1083 /* Detect unix format. */
|
|
|
1084 #ifndef WIN32_NATIVE
|
|
|
1085 && ! (IS_DIRECTORY_SEP (newdir[0]))
|
|
|
1086 #endif
|
|
428
|
1087 )
|
|
|
1088 {
|
|
|
1089 /* Effectively, let newdir be (expand-file-name newdir cwd).
|
|
|
1090 Because of the admonition against calling expand-file-name
|
|
|
1091 when we have pointers into lisp strings, we accomplish this
|
|
|
1092 indirectly by prepending newdir to nm if necessary, and using
|
|
|
1093 cwd (or the wd of newdir's drive) as the new newdir. */
|
|
|
1094
|
|
|
1095 if (IS_DRIVE (newdir[0]) && newdir[1] == ':')
|
|
|
1096 {
|
|
|
1097 drive = newdir[0];
|
|
|
1098 newdir += 2;
|
|
|
1099 }
|
|
|
1100 if (!IS_DIRECTORY_SEP (nm[0]))
|
|
|
1101 {
|
|
771
|
1102 Intbyte *tmp = (Intbyte *) alloca (qxestrlen (newdir) +
|
|
|
1103 qxestrlen (nm) + 2);
|
|
|
1104 file_name_as_directory (tmp, newdir);
|
|
|
1105 qxestrcat (tmp, nm);
|
|
428
|
1106 nm = tmp;
|
|
|
1107 }
|
|
|
1108 if (drive)
|
|
|
1109 {
|
|
657
|
1110 #ifdef WIN32_NATIVE
|
|
771
|
1111 Intbyte *newcwd = mswindows_getdcwd (toupper (drive) - 'A' + 1);
|
|
|
1112 if (newcwd)
|
|
|
1113 {
|
|
|
1114 INTBYTE_STRING_TO_ALLOCA (newcwd, newdir);
|
|
|
1115 xfree (newcwd);
|
|
|
1116 }
|
|
|
1117 else
|
|
657
|
1118 #endif
|
|
771
|
1119 INTBYTE_STRING_TO_ALLOCA ((Intbyte *) "/", newdir);
|
|
428
|
1120 }
|
|
|
1121 else
|
|
771
|
1122 INTBYTE_STRING_TO_ALLOCA (get_initial_directory (0, 0), newdir);
|
|
428
|
1123 }
|
|
|
1124
|
|
|
1125 /* Strip off drive name from prefix, if present. */
|
|
|
1126 if (IS_DRIVE (newdir[0]) && newdir[1] == ':')
|
|
|
1127 {
|
|
|
1128 drive = newdir[0];
|
|
|
1129 newdir += 2;
|
|
|
1130 }
|
|
|
1131
|
|
|
1132 /* Keep only a prefix from newdir if nm starts with slash
|
|
771
|
1133 (//server/share for UNC, nothing otherwise). */
|
|
657
|
1134 if (IS_DIRECTORY_SEP (nm[0])
|
|
|
1135 #ifndef WIN32_NATIVE
|
|
|
1136 && IS_DIRECTORY_SEP (nm[1])
|
|
|
1137 #endif
|
|
|
1138 && collapse_newdir)
|
|
428
|
1139 {
|
|
|
1140 if (IS_DIRECTORY_SEP (newdir[0]) && IS_DIRECTORY_SEP (newdir[1]))
|
|
|
1141 {
|
|
664
|
1142 newdir =
|
|
665
|
1143 (Intbyte *)
|
|
771
|
1144 qxestrcpy ((Intbyte *) alloca (qxestrlen (newdir) + 1),
|
|
|
1145 newdir);
|
|
428
|
1146 p = newdir + 2;
|
|
|
1147 while (*p && !IS_DIRECTORY_SEP (*p)) p++;
|
|
|
1148 p++;
|
|
|
1149 while (*p && !IS_DIRECTORY_SEP (*p)) p++;
|
|
|
1150 *p = 0;
|
|
|
1151 }
|
|
|
1152 else
|
|
665
|
1153 newdir = (Intbyte *) "";
|
|
428
|
1154 }
|
|
|
1155 }
|
|
657
|
1156 #endif /* WIN32_FILENAMES */
|
|
428
|
1157
|
|
|
1158 if (newdir)
|
|
|
1159 {
|
|
|
1160 /* Get rid of any slash at the end of newdir, unless newdir is
|
|
771
|
1161 just / or // (an incomplete UNC name). */
|
|
|
1162 length = qxestrlen (newdir);
|
|
428
|
1163 if (length > 1 && IS_DIRECTORY_SEP (newdir[length - 1])
|
|
657
|
1164 #ifdef WIN32_FILENAMES
|
|
428
|
1165 && !(length == 2 && IS_DIRECTORY_SEP (newdir[0]))
|
|
|
1166 #endif
|
|
|
1167 )
|
|
|
1168 {
|
|
665
|
1169 Intbyte *temp = (Intbyte *) alloca (length);
|
|
428
|
1170 memcpy (temp, newdir, length - 1);
|
|
|
1171 temp[length - 1] = 0;
|
|
|
1172 newdir = temp;
|
|
|
1173 }
|
|
|
1174 tlen = length + 1;
|
|
|
1175 }
|
|
|
1176 else
|
|
|
1177 tlen = 0;
|
|
|
1178
|
|
|
1179 /* Now concatenate the directory and name to new space in the stack frame */
|
|
771
|
1180 tlen += qxestrlen (nm) + 1;
|
|
657
|
1181 #ifdef WIN32_FILENAMES
|
|
771
|
1182 /* Reserve space for drive specifier and escape prefix, since either
|
|
|
1183 or both may need to be inserted. (The Microsoft x86 compiler
|
|
428
|
1184 produces incorrect code if the following two lines are combined.) */
|
|
771
|
1185 target = (Intbyte *) alloca (tlen + 4);
|
|
|
1186 target += 4;
|
|
657
|
1187 #else /* not WIN32_FILENAMES */
|
|
665
|
1188 target = (Intbyte *) alloca (tlen);
|
|
657
|
1189 #endif /* not WIN32_FILENAMES */
|
|
428
|
1190 *target = 0;
|
|
|
1191
|
|
|
1192 if (newdir)
|
|
|
1193 {
|
|
|
1194 if (nm[0] == 0 || IS_DIRECTORY_SEP (nm[0]))
|
|
771
|
1195 {
|
|
|
1196 #ifdef WIN32_FILENAMES
|
|
|
1197 /* If newdir is effectively "C:/", then the drive letter will have
|
|
|
1198 been stripped and newdir will be "/". Concatenating with an
|
|
|
1199 absolute directory in nm produces "//", which will then be
|
|
|
1200 incorrectly treated as a network share. Ignore newdir in
|
|
|
1201 this case (keeping the drive letter). */
|
|
|
1202 if (!(drive && nm[0] && IS_DIRECTORY_SEP (newdir[0])
|
|
|
1203 && newdir[1] == '\0'))
|
|
|
1204 #endif
|
|
|
1205 qxestrcpy (target, newdir);
|
|
|
1206 }
|
|
428
|
1207 else
|
|
771
|
1208 file_name_as_directory (target, newdir);
|
|
428
|
1209 }
|
|
|
1210
|
|
771
|
1211 qxestrcat (target, nm);
|
|
428
|
1212
|
|
|
1213 /* ASSERT (IS_DIRECTORY_SEP (target[0])) if not VMS */
|
|
|
1214
|
|
771
|
1215 /* Now canonicalize by removing `//', `/.' and `/foo/..' if they
|
|
|
1216 appear. */
|
|
428
|
1217
|
|
|
1218 p = target;
|
|
|
1219 o = target;
|
|
|
1220
|
|
|
1221 while (*p)
|
|
|
1222 {
|
|
|
1223 if (!IS_DIRECTORY_SEP (*p))
|
|
|
1224 {
|
|
|
1225 *o++ = *p++;
|
|
|
1226 }
|
|
|
1227 else if (IS_DIRECTORY_SEP (p[0])
|
|
|
1228 && p[1] == '.'
|
|
|
1229 && (IS_DIRECTORY_SEP (p[2])
|
|
|
1230 || p[2] == 0))
|
|
|
1231 {
|
|
|
1232 /* If "/." is the entire filename, keep the "/". Otherwise,
|
|
|
1233 just delete the whole "/.". */
|
|
|
1234 if (o == target && p[2] == '\0')
|
|
|
1235 *o++ = *p;
|
|
|
1236 p += 2;
|
|
|
1237 }
|
|
|
1238 else if (IS_DIRECTORY_SEP (p[0]) && p[1] == '.' && p[2] == '.'
|
|
|
1239 /* `/../' is the "superroot" on certain file systems. */
|
|
|
1240 && o != target
|
|
|
1241 && (IS_DIRECTORY_SEP (p[3]) || p[3] == 0))
|
|
|
1242 {
|
|
|
1243 while (o != target && (--o) && !IS_DIRECTORY_SEP (*o))
|
|
|
1244 ;
|
|
|
1245 /* Keep initial / only if this is the whole name. */
|
|
|
1246 if (o == target && IS_ANY_SEP (*o) && p[3] == 0)
|
|
|
1247 ++o;
|
|
|
1248 p += 3;
|
|
|
1249 }
|
|
771
|
1250 else if (p > target
|
|
|
1251 && IS_DIRECTORY_SEP (p[0]) && IS_DIRECTORY_SEP (p[1]))
|
|
|
1252 {
|
|
|
1253 /* Collapse multiple `/' in a row. */
|
|
|
1254 *o++ = *p++;
|
|
|
1255 while (IS_DIRECTORY_SEP (*p))
|
|
|
1256 ++p;
|
|
|
1257 }
|
|
428
|
1258 else
|
|
|
1259 {
|
|
|
1260 *o++ = *p++;
|
|
|
1261 }
|
|
|
1262 }
|
|
|
1263
|
|
657
|
1264 #ifdef WIN32_FILENAMES
|
|
428
|
1265 /* At last, set drive name, except for network file name. */
|
|
|
1266 if (drive)
|
|
|
1267 {
|
|
|
1268 target -= 2;
|
|
|
1269 target[0] = DRIVE_LETTER (drive);
|
|
|
1270 target[1] = ':';
|
|
|
1271 }
|
|
657
|
1272 #ifdef WIN32_NATIVE
|
|
428
|
1273 else
|
|
|
1274 {
|
|
|
1275 assert (IS_DIRECTORY_SEP (target[0]) && IS_DIRECTORY_SEP (target[1]));
|
|
|
1276 }
|
|
657
|
1277 #endif
|
|
771
|
1278 /* Reinsert the escape prefix if required. */
|
|
|
1279 if (is_escaped)
|
|
|
1280 {
|
|
|
1281 target -= 2;
|
|
|
1282 target[0] = '/';
|
|
|
1283 target[1] = ':';
|
|
|
1284 }
|
|
|
1285
|
|
|
1286 *o = '\0';
|
|
|
1287
|
|
|
1288 {
|
|
|
1289 Intbyte *newtarget = mswindows_canonicalize_filename (target);
|
|
|
1290 Lisp_Object result = build_intstring (newtarget);
|
|
|
1291 xfree (newtarget);
|
|
|
1292
|
|
|
1293 RETURN_UNGCPRO (result);
|
|
|
1294 }
|
|
|
1295 #else /* not WIN32_FILENAMES */
|
|
442
|
1296 RETURN_UNGCPRO (make_string (target, o - target));
|
|
771
|
1297 #endif /* not WIN32_FILENAMES */
|
|
428
|
1298 }
|
|
|
1299
|
|
|
1300 DEFUN ("file-truename", Ffile_truename, 1, 2, 0, /*
|
|
444
|
1301 Return the canonical name of FILENAME.
|
|
|
1302 Second arg DEFAULT is directory to start with if FILENAME is relative
|
|
428
|
1303 (does not start with slash); if DEFAULT is nil or missing,
|
|
444
|
1304 the current buffer's value of `default-directory' is used.
|
|
428
|
1305 No component of the resulting pathname will be a symbolic link, as
|
|
|
1306 in the realpath() function.
|
|
|
1307 */
|
|
|
1308 (filename, default_))
|
|
|
1309 {
|
|
442
|
1310 /* This function can GC. GC checked 2000-07-28 ben. */
|
|
428
|
1311 Lisp_Object expanded_name;
|
|
|
1312 struct gcpro gcpro1;
|
|
|
1313
|
|
|
1314 CHECK_STRING (filename);
|
|
|
1315
|
|
|
1316 expanded_name = Fexpand_file_name (filename, default_);
|
|
|
1317
|
|
|
1318 if (!STRINGP (expanded_name))
|
|
|
1319 return Qnil;
|
|
|
1320
|
|
|
1321 GCPRO1 (expanded_name);
|
|
442
|
1322
|
|
|
1323 {
|
|
|
1324 Lisp_Object handler =
|
|
|
1325 Ffind_file_name_handler (expanded_name, Qfile_truename);
|
|
|
1326
|
|
|
1327 if (!NILP (handler))
|
|
|
1328 RETURN_UNGCPRO
|
|
|
1329 (call2_check_string (handler, Qfile_truename, expanded_name));
|
|
|
1330 }
|
|
428
|
1331
|
|
|
1332 {
|
|
771
|
1333 Intbyte resolved_path[PATH_MAX];
|
|
|
1334 Bytecount elen = XSTRING_LENGTH (expanded_name);
|
|
|
1335 Intbyte *path;
|
|
|
1336 Intbyte *p;
|
|
|
1337
|
|
|
1338 LISP_STRING_TO_ALLOCA (expanded_name, path);
|
|
428
|
1339 p = path;
|
|
442
|
1340
|
|
428
|
1341 /* Try doing it all at once. */
|
|
771
|
1342 if (!qxe_realpath (path, resolved_path))
|
|
428
|
1343 {
|
|
|
1344 /* Didn't resolve it -- have to do it one component at a time. */
|
|
|
1345 /* "realpath" is a typically useless, stupid un*x piece of crap.
|
|
|
1346 It claims to return a useful value in the "error" case, but since
|
|
|
1347 there is no indication provided of how far along the pathname
|
|
|
1348 the function went before erring, there is no way to use the
|
|
442
|
1349 partial result returned. What a piece of junk.
|
|
|
1350
|
|
|
1351 The above comment refers to historical versions of
|
|
|
1352 realpath(). The Unix98 specs state:
|
|
|
1353
|
|
|
1354 "On successful completion, realpath() returns a
|
|
|
1355 pointer to the resolved name. Otherwise, realpath()
|
|
|
1356 returns a null pointer and sets errno to indicate the
|
|
|
1357 error, and the contents of the buffer pointed to by
|
|
|
1358 resolved_name are undefined."
|
|
|
1359
|
|
771
|
1360 Since we depend on undocumented semantics of various system
|
|
|
1361 realpath()s, we just use our own version in realpath.c. */
|
|
428
|
1362 for (;;)
|
|
|
1363 {
|
|
771
|
1364 Intbyte *pos;
|
|
446
|
1365
|
|
657
|
1366 #ifdef WIN32_FILENAMES
|
|
446
|
1367 if (IS_DRIVE (p[0]) && IS_DEVICE_SEP (p[1])
|
|
|
1368 && IS_DIRECTORY_SEP (p[2]))
|
|
|
1369 /* don't test c: on windows */
|
|
|
1370 p = p+2;
|
|
|
1371 else if (IS_DIRECTORY_SEP (p[0]) && IS_DIRECTORY_SEP (p[1]))
|
|
|
1372 /* start after // */
|
|
|
1373 p = p+1;
|
|
|
1374 #endif
|
|
|
1375 for (pos = p + 1; pos < path + elen; pos++)
|
|
|
1376 if (IS_DIRECTORY_SEP (*pos))
|
|
|
1377 {
|
|
|
1378 *(p = pos) = 0;
|
|
|
1379 break;
|
|
|
1380 }
|
|
|
1381 if (p != pos)
|
|
|
1382 p = 0;
|
|
428
|
1383
|
|
771
|
1384 if (qxe_realpath (path, resolved_path))
|
|
428
|
1385 {
|
|
|
1386 if (p)
|
|
446
|
1387 *p = DIRECTORY_SEP;
|
|
428
|
1388 else
|
|
|
1389 break;
|
|
|
1390
|
|
|
1391 }
|
|
|
1392 else if (errno == ENOENT || errno == EACCES)
|
|
|
1393 {
|
|
|
1394 /* Failed on this component. Just tack on the rest of
|
|
|
1395 the string and we are done. */
|
|
771
|
1396 int rlen = qxestrlen (resolved_path);
|
|
428
|
1397
|
|
|
1398 /* "On failure, it returns NULL, sets errno to indicate
|
|
|
1399 the error, and places in resolved_path the absolute pathname
|
|
|
1400 of the path component which could not be resolved." */
|
|
442
|
1401
|
|
|
1402 if (p)
|
|
428
|
1403 {
|
|
|
1404 int plen = elen - (p - path);
|
|
|
1405
|
|
446
|
1406 if (rlen > 1 && IS_DIRECTORY_SEP (resolved_path[rlen - 1]))
|
|
428
|
1407 rlen = rlen - 1;
|
|
|
1408
|
|
|
1409 if (plen + rlen + 1 > countof (resolved_path))
|
|
|
1410 goto toolong;
|
|
|
1411
|
|
446
|
1412 resolved_path[rlen] = DIRECTORY_SEP;
|
|
428
|
1413 memcpy (resolved_path + rlen + 1, p + 1, plen + 1 - 1);
|
|
|
1414 }
|
|
|
1415 break;
|
|
|
1416 }
|
|
|
1417 else
|
|
|
1418 goto lose;
|
|
|
1419 }
|
|
|
1420 }
|
|
|
1421
|
|
|
1422 {
|
|
442
|
1423 Lisp_Object resolved_name;
|
|
771
|
1424 int rlen = qxestrlen (resolved_path);
|
|
446
|
1425 if (elen > 0 && IS_DIRECTORY_SEP (XSTRING_BYTE (expanded_name, elen - 1))
|
|
|
1426 && !(rlen > 0 && IS_DIRECTORY_SEP (resolved_path[rlen - 1])))
|
|
428
|
1427 {
|
|
|
1428 if (rlen + 1 > countof (resolved_path))
|
|
|
1429 goto toolong;
|
|
446
|
1430 resolved_path[rlen++] = DIRECTORY_SEP;
|
|
442
|
1431 resolved_path[rlen] = '\0';
|
|
428
|
1432 }
|
|
771
|
1433 resolved_name = make_string (resolved_path, rlen);
|
|
442
|
1434 RETURN_UNGCPRO (resolved_name);
|
|
428
|
1435 }
|
|
|
1436
|
|
|
1437 toolong:
|
|
|
1438 errno = ENAMETOOLONG;
|
|
|
1439 goto lose;
|
|
|
1440 lose:
|
|
563
|
1441 report_file_error ("Finding truename", expanded_name);
|
|
428
|
1442 }
|
|
442
|
1443 RETURN_UNGCPRO (Qnil);
|
|
428
|
1444 }
|
|
|
1445
|
|
|
1446
|
|
|
1447 DEFUN ("substitute-in-file-name", Fsubstitute_in_file_name, 1, 1, 0, /*
|
|
|
1448 Substitute environment variables referred to in FILENAME.
|
|
|
1449 `$FOO' where FOO is an environment variable name means to substitute
|
|
|
1450 the value of that variable. The variable name should be terminated
|
|
444
|
1451 with a character, not a letter, digit or underscore; otherwise, enclose
|
|
428
|
1452 the entire variable name in braces.
|
|
|
1453 If `/~' appears, all of FILENAME through that `/' is discarded.
|
|
|
1454 */
|
|
444
|
1455 (filename))
|
|
428
|
1456 {
|
|
442
|
1457 /* This function can GC. GC checked 2000-07-28 ben. */
|
|
665
|
1458 Intbyte *nm;
|
|
|
1459
|
|
|
1460 Intbyte *s, *p, *o, *x, *endp;
|
|
|
1461 Intbyte *target = 0;
|
|
428
|
1462 int total = 0;
|
|
|
1463 int substituted = 0;
|
|
665
|
1464 Intbyte *xnm;
|
|
428
|
1465 Lisp_Object handler;
|
|
|
1466
|
|
444
|
1467 CHECK_STRING (filename);
|
|
428
|
1468
|
|
|
1469 /* If the file name has special constructs in it,
|
|
|
1470 call the corresponding file handler. */
|
|
444
|
1471 handler = Ffind_file_name_handler (filename, Qsubstitute_in_file_name);
|
|
428
|
1472 if (!NILP (handler))
|
|
|
1473 return call2_check_string_or_nil (handler, Qsubstitute_in_file_name,
|
|
444
|
1474 filename);
|
|
|
1475
|
|
|
1476 nm = XSTRING_DATA (filename);
|
|
|
1477 endp = nm + XSTRING_LENGTH (filename);
|
|
428
|
1478
|
|
|
1479 /* If /~ or // appears, discard everything through first slash. */
|
|
|
1480
|
|
|
1481 for (p = nm; p != endp; p++)
|
|
|
1482 {
|
|
|
1483 if ((p[0] == '~'
|
|
657
|
1484 #if defined (WIN32_FILENAMES)
|
|
440
|
1485 /* // at start of file name is meaningful in WindowsNT systems */
|
|
428
|
1486 || (IS_DIRECTORY_SEP (p[0]) && p - 1 != nm)
|
|
657
|
1487 #else /* not (WIN32_FILENAMES) */
|
|
428
|
1488 || IS_DIRECTORY_SEP (p[0])
|
|
657
|
1489 #endif /* not (WIN32_FILENAMES) */
|
|
428
|
1490 )
|
|
|
1491 && p != nm
|
|
|
1492 && (IS_DIRECTORY_SEP (p[-1])))
|
|
|
1493 {
|
|
|
1494 nm = p;
|
|
|
1495 substituted = 1;
|
|
|
1496 }
|
|
657
|
1497 #ifdef WIN32_FILENAMES
|
|
428
|
1498 /* see comment in expand-file-name about drive specifiers */
|
|
|
1499 else if (IS_DRIVE (p[0]) && p[1] == ':'
|
|
|
1500 && p > nm && IS_DIRECTORY_SEP (p[-1]))
|
|
|
1501 {
|
|
|
1502 nm = p;
|
|
|
1503 substituted = 1;
|
|
|
1504 }
|
|
657
|
1505 #endif /* WIN32_FILENAMES */
|
|
428
|
1506 }
|
|
|
1507
|
|
|
1508 /* See if any variables are substituted into the string
|
|
|
1509 and find the total length of their values in `total' */
|
|
|
1510
|
|
|
1511 for (p = nm; p != endp;)
|
|
|
1512 if (*p != '$')
|
|
|
1513 p++;
|
|
|
1514 else
|
|
|
1515 {
|
|
|
1516 p++;
|
|
|
1517 if (p == endp)
|
|
|
1518 goto badsubst;
|
|
|
1519 else if (*p == '$')
|
|
|
1520 {
|
|
|
1521 /* "$$" means a single "$" */
|
|
|
1522 p++;
|
|
|
1523 total -= 1;
|
|
|
1524 substituted = 1;
|
|
|
1525 continue;
|
|
|
1526 }
|
|
|
1527 else if (*p == '{')
|
|
|
1528 {
|
|
|
1529 o = ++p;
|
|
|
1530 while (p != endp && *p != '}') p++;
|
|
|
1531 if (*p != '}') goto missingclose;
|
|
|
1532 s = p;
|
|
|
1533 }
|
|
|
1534 else
|
|
|
1535 {
|
|
|
1536 o = p;
|
|
|
1537 while (p != endp && (isalnum (*p) || *p == '_')) p++;
|
|
|
1538 s = p;
|
|
|
1539 }
|
|
|
1540
|
|
|
1541 /* Copy out the variable name */
|
|
665
|
1542 target = (Intbyte *) alloca (s - o + 1);
|
|
771
|
1543 qxestrncpy (target, o, s - o);
|
|
428
|
1544 target[s - o] = 0;
|
|
442
|
1545 #ifdef WIN32_NATIVE
|
|
428
|
1546 strupr (target); /* $home == $HOME etc. */
|
|
442
|
1547 #endif /* WIN32_NATIVE */
|
|
428
|
1548
|
|
|
1549 /* Get variable value */
|
|
771
|
1550 o = egetenv ((CIntbyte *) target);
|
|
428
|
1551 if (!o) goto badvar;
|
|
771
|
1552 total += qxestrlen (o);
|
|
428
|
1553 substituted = 1;
|
|
|
1554 }
|
|
|
1555
|
|
|
1556 if (!substituted)
|
|
444
|
1557 return filename;
|
|
|
1558
|
|
|
1559 /* If substitution required, recopy the filename and do it */
|
|
428
|
1560 /* Make space in stack frame for the new copy */
|
|
665
|
1561 xnm = (Intbyte *) alloca (XSTRING_LENGTH (filename) + total + 1);
|
|
428
|
1562 x = xnm;
|
|
|
1563
|
|
|
1564 /* Copy the rest of the name through, replacing $ constructs with values */
|
|
|
1565 for (p = nm; *p;)
|
|
|
1566 if (*p != '$')
|
|
|
1567 *x++ = *p++;
|
|
|
1568 else
|
|
|
1569 {
|
|
|
1570 p++;
|
|
|
1571 if (p == endp)
|
|
|
1572 goto badsubst;
|
|
|
1573 else if (*p == '$')
|
|
|
1574 {
|
|
|
1575 *x++ = *p++;
|
|
|
1576 continue;
|
|
|
1577 }
|
|
|
1578 else if (*p == '{')
|
|
|
1579 {
|
|
|
1580 o = ++p;
|
|
|
1581 while (p != endp && *p != '}') p++;
|
|
|
1582 if (*p != '}') goto missingclose;
|
|
|
1583 s = p++;
|
|
|
1584 }
|
|
|
1585 else
|
|
|
1586 {
|
|
|
1587 o = p;
|
|
|
1588 while (p != endp && (isalnum (*p) || *p == '_')) p++;
|
|
|
1589 s = p;
|
|
|
1590 }
|
|
|
1591
|
|
|
1592 /* Copy out the variable name */
|
|
665
|
1593 target = (Intbyte *) alloca (s - o + 1);
|
|
771
|
1594 qxestrncpy (target, o, s - o);
|
|
428
|
1595 target[s - o] = 0;
|
|
442
|
1596 #ifdef WIN32_NATIVE
|
|
428
|
1597 strupr (target); /* $home == $HOME etc. */
|
|
442
|
1598 #endif /* WIN32_NATIVE */
|
|
428
|
1599
|
|
|
1600 /* Get variable value */
|
|
771
|
1601 o = egetenv ((CIntbyte *) target);
|
|
428
|
1602 if (!o)
|
|
|
1603 goto badvar;
|
|
|
1604
|
|
771
|
1605 qxestrcpy (x, o);
|
|
|
1606 x += qxestrlen (o);
|
|
428
|
1607 }
|
|
|
1608
|
|
|
1609 *x = 0;
|
|
|
1610
|
|
|
1611 /* If /~ or // appears, discard everything through first slash. */
|
|
|
1612
|
|
|
1613 for (p = xnm; p != x; p++)
|
|
|
1614 if ((p[0] == '~'
|
|
657
|
1615 #if defined (WIN32_FILENAMES)
|
|
428
|
1616 || (IS_DIRECTORY_SEP (p[0]) && p - 1 != xnm)
|
|
657
|
1617 #else /* not WIN32_FILENAMES */
|
|
428
|
1618 || IS_DIRECTORY_SEP (p[0])
|
|
657
|
1619 #endif /* not WIN32_FILENAMES */
|
|
428
|
1620 )
|
|
|
1621 /* don't do p[-1] if that would go off the beginning --jwz */
|
|
|
1622 && p != nm && p > xnm && IS_DIRECTORY_SEP (p[-1]))
|
|
|
1623 xnm = p;
|
|
657
|
1624 #ifdef WIN32_FILENAMES
|
|
428
|
1625 else if (IS_DRIVE (p[0]) && p[1] == ':'
|
|
|
1626 && p > nm && IS_DIRECTORY_SEP (p[-1]))
|
|
|
1627 xnm = p;
|
|
|
1628 #endif
|
|
|
1629
|
|
|
1630 return make_string (xnm, x - xnm);
|
|
|
1631
|
|
|
1632 badsubst:
|
|
444
|
1633 syntax_error ("Bad format environment-variable substitution", filename);
|
|
428
|
1634 missingclose:
|
|
442
|
1635 syntax_error ("Missing \"}\" in environment-variable substitution",
|
|
444
|
1636 filename);
|
|
428
|
1637 badvar:
|
|
442
|
1638 syntax_error_2 ("Substituting nonexistent environment variable",
|
|
771
|
1639 filename, build_intstring (target));
|
|
428
|
1640
|
|
|
1641 /* NOTREACHED */
|
|
|
1642 return Qnil; /* suppress compiler warning */
|
|
|
1643 }
|
|
|
1644
|
|
|
1645 /* A slightly faster and more convenient way to get
|
|
|
1646 (directory-file-name (expand-file-name FOO)). */
|
|
|
1647
|
|
|
1648 Lisp_Object
|
|
|
1649 expand_and_dir_to_file (Lisp_Object filename, Lisp_Object defdir)
|
|
|
1650 {
|
|
442
|
1651 /* This function can call Lisp. GC checked 2000-07-28 ben */
|
|
428
|
1652 Lisp_Object abspath;
|
|
|
1653 struct gcpro gcpro1;
|
|
|
1654
|
|
|
1655 abspath = Fexpand_file_name (filename, defdir);
|
|
|
1656 GCPRO1 (abspath);
|
|
|
1657 /* Remove final slash, if any (unless path is root).
|
|
|
1658 stat behaves differently depending! */
|
|
|
1659 if (XSTRING_LENGTH (abspath) > 1
|
|
|
1660 && IS_DIRECTORY_SEP (XSTRING_BYTE (abspath, XSTRING_LENGTH (abspath) - 1))
|
|
|
1661 && !IS_DEVICE_SEP (XSTRING_BYTE (abspath, XSTRING_LENGTH (abspath) - 2)))
|
|
|
1662 /* We cannot take shortcuts; they might be wrong for magic file names. */
|
|
|
1663 abspath = Fdirectory_file_name (abspath);
|
|
|
1664 UNGCPRO;
|
|
|
1665 return abspath;
|
|
|
1666 }
|
|
|
1667
|
|
|
1668 /* Signal an error if the file ABSNAME already exists.
|
|
|
1669 If INTERACTIVE is nonzero, ask the user whether to proceed,
|
|
|
1670 and bypass the error if the user says to go ahead.
|
|
|
1671 QUERYSTRING is a name for the action that is being considered
|
|
|
1672 to alter the file.
|
|
|
1673 *STATPTR is used to store the stat information if the file exists.
|
|
|
1674 If the file does not exist, STATPTR->st_mode is set to 0. */
|
|
|
1675
|
|
|
1676 static void
|
|
442
|
1677 barf_or_query_if_file_exists (Lisp_Object absname, const char *querystring,
|
|
428
|
1678 int interactive, struct stat *statptr)
|
|
|
1679 {
|
|
442
|
1680 /* This function can call Lisp. GC checked 2000-07-28 ben */
|
|
428
|
1681 struct stat statbuf;
|
|
|
1682
|
|
|
1683 /* stat is a good way to tell whether the file exists,
|
|
|
1684 regardless of what access permissions it has. */
|
|
771
|
1685 if (qxe_stat (XSTRING_DATA (absname), &statbuf) >= 0)
|
|
428
|
1686 {
|
|
|
1687 Lisp_Object tem;
|
|
|
1688
|
|
|
1689 if (interactive)
|
|
|
1690 {
|
|
|
1691 Lisp_Object prompt;
|
|
|
1692 struct gcpro gcpro1;
|
|
|
1693
|
|
771
|
1694 prompt =
|
|
|
1695 emacs_sprintf_string
|
|
|
1696 (CGETTEXT ("File %s already exists; %s anyway? "),
|
|
|
1697 XSTRING_DATA (absname), CGETTEXT (querystring));
|
|
428
|
1698
|
|
|
1699 GCPRO1 (prompt);
|
|
|
1700 tem = call1 (Qyes_or_no_p, prompt);
|
|
|
1701 UNGCPRO;
|
|
|
1702 }
|
|
|
1703 else
|
|
|
1704 tem = Qnil;
|
|
|
1705
|
|
|
1706 if (NILP (tem))
|
|
|
1707 Fsignal (Qfile_already_exists,
|
|
771
|
1708 list2 (build_msg_string ("File already exists"),
|
|
428
|
1709 absname));
|
|
|
1710 if (statptr)
|
|
|
1711 *statptr = statbuf;
|
|
|
1712 }
|
|
|
1713 else
|
|
|
1714 {
|
|
|
1715 if (statptr)
|
|
|
1716 statptr->st_mode = 0;
|
|
|
1717 }
|
|
|
1718 return;
|
|
|
1719 }
|
|
|
1720
|
|
|
1721 DEFUN ("copy-file", Fcopy_file, 2, 4,
|
|
|
1722 "fCopy file: \nFCopy %s to file: \np\nP", /*
|
|
444
|
1723 Copy FILENAME to NEWNAME. Both args must be strings.
|
|
428
|
1724 Signals a `file-already-exists' error if file NEWNAME already exists,
|
|
|
1725 unless a third argument OK-IF-ALREADY-EXISTS is supplied and non-nil.
|
|
|
1726 A number as third arg means request confirmation if NEWNAME already exists.
|
|
|
1727 This is what happens in interactive use with M-x.
|
|
|
1728 Fourth arg KEEP-TIME non-nil means give the new file the same
|
|
|
1729 last-modified time as the old one. (This works on only some systems.)
|
|
|
1730 A prefix arg makes KEEP-TIME non-nil.
|
|
|
1731 */
|
|
|
1732 (filename, newname, ok_if_already_exists, keep_time))
|
|
|
1733 {
|
|
442
|
1734 /* This function can call Lisp. GC checked 2000-07-28 ben */
|
|
428
|
1735 int ifd, ofd, n;
|
|
|
1736 char buf[16 * 1024];
|
|
|
1737 struct stat st, out_st;
|
|
|
1738 Lisp_Object handler;
|
|
|
1739 int speccount = specpdl_depth ();
|
|
|
1740 struct gcpro gcpro1, gcpro2;
|
|
|
1741 /* Lisp_Object args[6]; */
|
|
|
1742 int input_file_statable_p;
|
|
|
1743
|
|
|
1744 GCPRO2 (filename, newname);
|
|
|
1745 CHECK_STRING (filename);
|
|
|
1746 CHECK_STRING (newname);
|
|
|
1747 filename = Fexpand_file_name (filename, Qnil);
|
|
|
1748 newname = Fexpand_file_name (newname, Qnil);
|
|
|
1749
|
|
|
1750 /* If the input file name has special constructs in it,
|
|
|
1751 call the corresponding file handler. */
|
|
|
1752 handler = Ffind_file_name_handler (filename, Qcopy_file);
|
|
|
1753 /* Likewise for output file name. */
|
|
|
1754 if (NILP (handler))
|
|
|
1755 handler = Ffind_file_name_handler (newname, Qcopy_file);
|
|
|
1756 if (!NILP (handler))
|
|
|
1757 {
|
|
|
1758 UNGCPRO;
|
|
|
1759 return call5 (handler, Qcopy_file, filename, newname,
|
|
|
1760 ok_if_already_exists, keep_time);
|
|
|
1761 }
|
|
|
1762
|
|
|
1763 /* When second argument is a directory, copy the file into it.
|
|
|
1764 (copy-file "foo" "bar/") == (copy-file "foo" "bar/foo")
|
|
|
1765 */
|
|
|
1766 if (!NILP (Ffile_directory_p (newname)))
|
|
|
1767 {
|
|
|
1768 Lisp_Object args[3];
|
|
|
1769 struct gcpro ngcpro1;
|
|
|
1770 int i = 1;
|
|
|
1771
|
|
|
1772 args[0] = newname;
|
|
|
1773 args[1] = Qnil; args[2] = Qnil;
|
|
|
1774 NGCPRO1 (*args);
|
|
|
1775 ngcpro1.nvars = 3;
|
|
442
|
1776 if (!IS_DIRECTORY_SEP (XSTRING_BYTE (newname,
|
|
|
1777 XSTRING_LENGTH (newname) - 1)))
|
|
|
1778
|
|
|
1779 args[i++] = Fchar_to_string (Vdirectory_sep_char);
|
|
428
|
1780 args[i++] = Ffile_name_nondirectory (filename);
|
|
|
1781 newname = Fconcat (i, args);
|
|
|
1782 NUNGCPRO;
|
|
|
1783 }
|
|
|
1784
|
|
|
1785 if (NILP (ok_if_already_exists)
|
|
|
1786 || INTP (ok_if_already_exists))
|
|
|
1787 barf_or_query_if_file_exists (newname, "copy to it",
|
|
|
1788 INTP (ok_if_already_exists), &out_st);
|
|
771
|
1789 else if (qxe_stat (XSTRING_DATA (newname), &out_st) < 0)
|
|
428
|
1790 out_st.st_mode = 0;
|
|
|
1791
|
|
771
|
1792 ifd = qxe_interruptible_open (XSTRING_DATA (filename),
|
|
|
1793 O_RDONLY | OPEN_BINARY, 0);
|
|
428
|
1794 if (ifd < 0)
|
|
563
|
1795 report_file_error ("Opening input file", filename);
|
|
428
|
1796
|
|
|
1797 record_unwind_protect (close_file_unwind, make_int (ifd));
|
|
|
1798
|
|
|
1799 /* We can only copy regular files and symbolic links. Other files are not
|
|
|
1800 copyable by us. */
|
|
771
|
1801 input_file_statable_p = (qxe_fstat (ifd, &st) >= 0);
|
|
428
|
1802
|
|
442
|
1803 #ifndef WIN32_NATIVE
|
|
428
|
1804 if (out_st.st_mode != 0
|
|
|
1805 && st.st_dev == out_st.st_dev && st.st_ino == out_st.st_ino)
|
|
|
1806 {
|
|
|
1807 errno = 0;
|
|
|
1808 report_file_error ("Input and output files are the same",
|
|
563
|
1809 list3 (Qunbound, filename, newname));
|
|
428
|
1810 }
|
|
|
1811 #endif
|
|
|
1812
|
|
|
1813 #if defined (S_ISREG) && defined (S_ISLNK)
|
|
|
1814 if (input_file_statable_p)
|
|
|
1815 {
|
|
|
1816 if (!(S_ISREG (st.st_mode))
|
|
|
1817 /* XEmacs: have to allow S_ISCHR in order to copy /dev/null */
|
|
|
1818 #ifdef S_ISCHR
|
|
|
1819 && !(S_ISCHR (st.st_mode))
|
|
|
1820 #endif
|
|
|
1821 && !(S_ISLNK (st.st_mode)))
|
|
|
1822 {
|
|
|
1823 #if defined (EISDIR)
|
|
|
1824 /* Get a better looking error message. */
|
|
|
1825 errno = EISDIR;
|
|
|
1826 #endif /* EISDIR */
|
|
563
|
1827 report_file_error ("Non-regular file", filename);
|
|
428
|
1828 }
|
|
|
1829 }
|
|
|
1830 #endif /* S_ISREG && S_ISLNK */
|
|
|
1831
|
|
771
|
1832 ofd = qxe_open (XSTRING_DATA (newname),
|
|
|
1833 O_WRONLY | O_CREAT | O_TRUNC | OPEN_BINARY, CREAT_MODE);
|
|
428
|
1834 if (ofd < 0)
|
|
563
|
1835 report_file_error ("Opening output file", newname);
|
|
428
|
1836
|
|
|
1837 {
|
|
|
1838 Lisp_Object ofd_locative = noseeum_cons (make_int (ofd), Qnil);
|
|
|
1839
|
|
|
1840 record_unwind_protect (close_file_unwind, ofd_locative);
|
|
|
1841
|
|
|
1842 while ((n = read_allowing_quit (ifd, buf, sizeof (buf))) > 0)
|
|
|
1843 {
|
|
|
1844 if (write_allowing_quit (ofd, buf, n) != n)
|
|
563
|
1845 report_file_error ("I/O error", newname);
|
|
428
|
1846 }
|
|
|
1847
|
|
|
1848 /* Closing the output clobbers the file times on some systems. */
|
|
771
|
1849 if (retry_close (ofd) < 0)
|
|
563
|
1850 report_file_error ("I/O error", newname);
|
|
428
|
1851
|
|
|
1852 if (input_file_statable_p)
|
|
|
1853 {
|
|
442
|
1854 if (!NILP (keep_time))
|
|
|
1855 {
|
|
|
1856 EMACS_TIME atime, mtime;
|
|
|
1857 EMACS_SET_SECS_USECS (atime, st.st_atime, 0);
|
|
|
1858 EMACS_SET_SECS_USECS (mtime, st.st_mtime, 0);
|
|
592
|
1859 if (set_file_times (newname, atime, mtime))
|
|
|
1860 report_file_error ("I/O error", list1 (newname));
|
|
442
|
1861 }
|
|
771
|
1862 qxe_chmod (XSTRING_DATA (newname), st.st_mode & 07777);
|
|
428
|
1863 }
|
|
|
1864
|
|
|
1865 /* We'll close it by hand */
|
|
|
1866 XCAR (ofd_locative) = Qnil;
|
|
|
1867
|
|
|
1868 /* Close ifd */
|
|
771
|
1869 unbind_to (speccount);
|
|
428
|
1870 }
|
|
|
1871
|
|
|
1872 UNGCPRO;
|
|
|
1873 return Qnil;
|
|
|
1874 }
|
|
|
1875
|
|
|
1876 DEFUN ("make-directory-internal", Fmake_directory_internal, 1, 1, 0, /*
|
|
|
1877 Create a directory. One argument, a file name string.
|
|
|
1878 */
|
|
|
1879 (dirname_))
|
|
|
1880 {
|
|
|
1881 /* This function can GC. GC checked 1997.04.06. */
|
|
|
1882 Lisp_Object handler;
|
|
|
1883 struct gcpro gcpro1;
|
|
771
|
1884 DECLARE_EISTRING (dir);
|
|
428
|
1885
|
|
|
1886 CHECK_STRING (dirname_);
|
|
|
1887 dirname_ = Fexpand_file_name (dirname_, Qnil);
|
|
|
1888
|
|
|
1889 GCPRO1 (dirname_);
|
|
|
1890 handler = Ffind_file_name_handler (dirname_, Qmake_directory_internal);
|
|
|
1891 UNGCPRO;
|
|
|
1892 if (!NILP (handler))
|
|
|
1893 return (call2 (handler, Qmake_directory_internal, dirname_));
|
|
|
1894
|
|
771
|
1895 eicpy_lstr (dir, dirname_);
|
|
|
1896 if (eigetch_char (dir, eicharlen (dir) - 1) == '/')
|
|
|
1897 eidel (dir, eilen (dir) - 1, -1, 1, -1);
|
|
|
1898
|
|
|
1899 if (qxe_mkdir (eidata (dir), 0777) != 0)
|
|
563
|
1900 report_file_error ("Creating directory", dirname_);
|
|
428
|
1901
|
|
|
1902 return Qnil;
|
|
|
1903 }
|
|
|
1904
|
|
|
1905 DEFUN ("delete-directory", Fdelete_directory, 1, 1, "FDelete directory: ", /*
|
|
|
1906 Delete a directory. One argument, a file name or directory name string.
|
|
|
1907 */
|
|
|
1908 (dirname_))
|
|
|
1909 {
|
|
|
1910 /* This function can GC. GC checked 1997.04.06. */
|
|
|
1911 Lisp_Object handler;
|
|
|
1912 struct gcpro gcpro1;
|
|
|
1913
|
|
|
1914 CHECK_STRING (dirname_);
|
|
|
1915
|
|
|
1916 GCPRO1 (dirname_);
|
|
|
1917 dirname_ = Fexpand_file_name (dirname_, Qnil);
|
|
|
1918 dirname_ = Fdirectory_file_name (dirname_);
|
|
|
1919
|
|
|
1920 handler = Ffind_file_name_handler (dirname_, Qdelete_directory);
|
|
|
1921 UNGCPRO;
|
|
|
1922 if (!NILP (handler))
|
|
|
1923 return (call2 (handler, Qdelete_directory, dirname_));
|
|
|
1924
|
|
771
|
1925 if (qxe_rmdir (XSTRING_DATA (dirname_)) != 0)
|
|
563
|
1926 report_file_error ("Removing directory", dirname_);
|
|
428
|
1927
|
|
|
1928 return Qnil;
|
|
|
1929 }
|
|
|
1930
|
|
|
1931 DEFUN ("delete-file", Fdelete_file, 1, 1, "fDelete file: ", /*
|
|
442
|
1932 Delete the file named FILENAME (a string).
|
|
|
1933 If FILENAME has multiple names, it continues to exist with the other names.
|
|
428
|
1934 */
|
|
|
1935 (filename))
|
|
|
1936 {
|
|
|
1937 /* This function can GC. GC checked 1997.04.06. */
|
|
|
1938 Lisp_Object handler;
|
|
|
1939 struct gcpro gcpro1;
|
|
|
1940
|
|
|
1941 CHECK_STRING (filename);
|
|
|
1942 filename = Fexpand_file_name (filename, Qnil);
|
|
|
1943
|
|
|
1944 GCPRO1 (filename);
|
|
|
1945 handler = Ffind_file_name_handler (filename, Qdelete_file);
|
|
|
1946 UNGCPRO;
|
|
|
1947 if (!NILP (handler))
|
|
|
1948 return call2 (handler, Qdelete_file, filename);
|
|
|
1949
|
|
771
|
1950 if (0 > qxe_unlink (XSTRING_DATA (filename)))
|
|
563
|
1951 report_file_error ("Removing old name", filename);
|
|
428
|
1952 return Qnil;
|
|
|
1953 }
|
|
|
1954
|
|
|
1955 static Lisp_Object
|
|
|
1956 internal_delete_file_1 (Lisp_Object ignore, Lisp_Object ignore2)
|
|
|
1957 {
|
|
|
1958 return Qt;
|
|
|
1959 }
|
|
|
1960
|
|
|
1961 /* Delete file FILENAME, returning 1 if successful and 0 if failed. */
|
|
|
1962
|
|
|
1963 int
|
|
|
1964 internal_delete_file (Lisp_Object filename)
|
|
|
1965 {
|
|
|
1966 /* This function can GC. GC checked 1997.04.06. */
|
|
|
1967 return NILP (condition_case_1 (Qt, Fdelete_file, filename,
|
|
|
1968 internal_delete_file_1, Qnil));
|
|
|
1969 }
|
|
|
1970
|
|
|
1971 DEFUN ("rename-file", Frename_file, 2, 3,
|
|
|
1972 "fRename file: \nFRename %s to file: \np", /*
|
|
444
|
1973 Rename FILENAME as NEWNAME. Both args must be strings.
|
|
|
1974 If file has names other than FILENAME, it continues to have those names.
|
|
428
|
1975 Signals a `file-already-exists' error if a file NEWNAME already exists
|
|
|
1976 unless optional third argument OK-IF-ALREADY-EXISTS is non-nil.
|
|
|
1977 A number as third arg means request confirmation if NEWNAME already exists.
|
|
|
1978 This is what happens in interactive use with M-x.
|
|
|
1979 */
|
|
|
1980 (filename, newname, ok_if_already_exists))
|
|
|
1981 {
|
|
|
1982 /* This function can GC. GC checked 1997.04.06. */
|
|
|
1983 Lisp_Object handler;
|
|
|
1984 struct gcpro gcpro1, gcpro2;
|
|
|
1985
|
|
|
1986 GCPRO2 (filename, newname);
|
|
|
1987 CHECK_STRING (filename);
|
|
|
1988 CHECK_STRING (newname);
|
|
|
1989 filename = Fexpand_file_name (filename, Qnil);
|
|
|
1990 newname = Fexpand_file_name (newname, Qnil);
|
|
|
1991
|
|
|
1992 /* If the file name has special constructs in it,
|
|
|
1993 call the corresponding file handler. */
|
|
|
1994 handler = Ffind_file_name_handler (filename, Qrename_file);
|
|
|
1995 if (NILP (handler))
|
|
|
1996 handler = Ffind_file_name_handler (newname, Qrename_file);
|
|
|
1997 if (!NILP (handler))
|
|
|
1998 {
|
|
|
1999 UNGCPRO;
|
|
|
2000 return call4 (handler, Qrename_file,
|
|
|
2001 filename, newname, ok_if_already_exists);
|
|
|
2002 }
|
|
|
2003
|
|
|
2004 /* When second argument is a directory, rename the file into it.
|
|
|
2005 (rename-file "foo" "bar/") == (rename-file "foo" "bar/foo")
|
|
|
2006 */
|
|
|
2007 if (!NILP (Ffile_directory_p (newname)))
|
|
|
2008 {
|
|
|
2009 Lisp_Object args[3];
|
|
|
2010 struct gcpro ngcpro1;
|
|
|
2011 int i = 1;
|
|
|
2012
|
|
|
2013 args[0] = newname;
|
|
|
2014 args[1] = Qnil; args[2] = Qnil;
|
|
|
2015 NGCPRO1 (*args);
|
|
|
2016 ngcpro1.nvars = 3;
|
|
|
2017 if (XSTRING_BYTE (newname, XSTRING_LENGTH (newname) - 1) != '/')
|
|
|
2018 args[i++] = build_string ("/");
|
|
|
2019 args[i++] = Ffile_name_nondirectory (filename);
|
|
|
2020 newname = Fconcat (i, args);
|
|
|
2021 NUNGCPRO;
|
|
|
2022 }
|
|
|
2023
|
|
|
2024 if (NILP (ok_if_already_exists)
|
|
|
2025 || INTP (ok_if_already_exists))
|
|
|
2026 barf_or_query_if_file_exists (newname, "rename to it",
|
|
|
2027 INTP (ok_if_already_exists), 0);
|
|
|
2028
|
|
442
|
2029 /* We have configure check for rename() and emulate using
|
|
|
2030 link()/unlink() if necessary. */
|
|
771
|
2031 if (0 > qxe_rename (XSTRING_DATA (filename), XSTRING_DATA (newname)))
|
|
428
|
2032 {
|
|
|
2033 if (errno == EXDEV)
|
|
|
2034 {
|
|
|
2035 Fcopy_file (filename, newname,
|
|
|
2036 /* We have already prompted if it was an integer,
|
|
|
2037 so don't have copy-file prompt again. */
|
|
|
2038 (NILP (ok_if_already_exists) ? Qnil : Qt),
|
|
|
2039 Qt);
|
|
|
2040 Fdelete_file (filename);
|
|
|
2041 }
|
|
|
2042 else
|
|
|
2043 {
|
|
563
|
2044 report_file_error ("Renaming", list3 (Qunbound, filename, newname));
|
|
428
|
2045 }
|
|
|
2046 }
|
|
|
2047 UNGCPRO;
|
|
|
2048 return Qnil;
|
|
|
2049 }
|
|
|
2050
|
|
|
2051 DEFUN ("add-name-to-file", Fadd_name_to_file, 2, 3,
|
|
|
2052 "fAdd name to file: \nFName to add to %s: \np", /*
|
|
444
|
2053 Give FILENAME additional name NEWNAME. Both args must be strings.
|
|
428
|
2054 Signals a `file-already-exists' error if a file NEWNAME already exists
|
|
|
2055 unless optional third argument OK-IF-ALREADY-EXISTS is non-nil.
|
|
|
2056 A number as third arg means request confirmation if NEWNAME already exists.
|
|
|
2057 This is what happens in interactive use with M-x.
|
|
|
2058 */
|
|
|
2059 (filename, newname, ok_if_already_exists))
|
|
|
2060 {
|
|
|
2061 /* This function can GC. GC checked 1997.04.06. */
|
|
|
2062 Lisp_Object handler;
|
|
|
2063 struct gcpro gcpro1, gcpro2;
|
|
|
2064
|
|
|
2065 GCPRO2 (filename, newname);
|
|
|
2066 CHECK_STRING (filename);
|
|
|
2067 CHECK_STRING (newname);
|
|
|
2068 filename = Fexpand_file_name (filename, Qnil);
|
|
|
2069 newname = Fexpand_file_name (newname, Qnil);
|
|
|
2070
|
|
|
2071 /* If the file name has special constructs in it,
|
|
|
2072 call the corresponding file handler. */
|
|
|
2073 handler = Ffind_file_name_handler (filename, Qadd_name_to_file);
|
|
|
2074 if (!NILP (handler))
|
|
|
2075 RETURN_UNGCPRO (call4 (handler, Qadd_name_to_file, filename,
|
|
|
2076 newname, ok_if_already_exists));
|
|
|
2077
|
|
|
2078 /* If the new name has special constructs in it,
|
|
|
2079 call the corresponding file handler. */
|
|
|
2080 handler = Ffind_file_name_handler (newname, Qadd_name_to_file);
|
|
|
2081 if (!NILP (handler))
|
|
|
2082 RETURN_UNGCPRO (call4 (handler, Qadd_name_to_file, filename,
|
|
|
2083 newname, ok_if_already_exists));
|
|
|
2084
|
|
|
2085 if (NILP (ok_if_already_exists)
|
|
|
2086 || INTP (ok_if_already_exists))
|
|
|
2087 barf_or_query_if_file_exists (newname, "make it a new name",
|
|
|
2088 INTP (ok_if_already_exists), 0);
|
|
771
|
2089 /* #### Emacs 20.6 contains an implementation of link() in w32.c.
|
|
|
2090 Need to port. */
|
|
|
2091 #ifndef HAVE_LINK
|
|
563
|
2092 signal_error_2 (Qunimplemented, "Adding new name", filename, newname);
|
|
771
|
2093 #else /* HAVE_LINK */
|
|
|
2094 qxe_unlink (XSTRING_DATA (newname));
|
|
|
2095 if (0 > qxe_link (XSTRING_DATA (filename), XSTRING_DATA (newname)))
|
|
428
|
2096 {
|
|
|
2097 report_file_error ("Adding new name",
|
|
563
|
2098 list3 (Qunbound, filename, newname));
|
|
428
|
2099 }
|
|
771
|
2100 #endif /* HAVE_LINK */
|
|
428
|
2101
|
|
|
2102 UNGCPRO;
|
|
|
2103 return Qnil;
|
|
|
2104 }
|
|
|
2105
|
|
|
2106 DEFUN ("make-symbolic-link", Fmake_symbolic_link, 2, 3,
|
|
|
2107 "FMake symbolic link to file: \nFMake symbolic link to file %s: \np", /*
|
|
|
2108 Make a symbolic link to FILENAME, named LINKNAME. Both args strings.
|
|
|
2109 Signals a `file-already-exists' error if a file LINKNAME already exists
|
|
|
2110 unless optional third argument OK-IF-ALREADY-EXISTS is non-nil.
|
|
|
2111 A number as third arg means request confirmation if LINKNAME already exists.
|
|
|
2112 This happens for interactive use with M-x.
|
|
|
2113 */
|
|
|
2114 (filename, linkname, ok_if_already_exists))
|
|
|
2115 {
|
|
|
2116 /* This function can GC. GC checked 1997.06.04. */
|
|
442
|
2117 /* XEmacs change: run handlers even if local machine doesn't have symlinks */
|
|
428
|
2118 Lisp_Object handler;
|
|
|
2119 struct gcpro gcpro1, gcpro2;
|
|
|
2120
|
|
|
2121 GCPRO2 (filename, linkname);
|
|
|
2122 CHECK_STRING (filename);
|
|
|
2123 CHECK_STRING (linkname);
|
|
|
2124 /* If the link target has a ~, we must expand it to get
|
|
|
2125 a truly valid file name. Otherwise, do not expand;
|
|
|
2126 we want to permit links to relative file names. */
|
|
|
2127 if (XSTRING_BYTE (filename, 0) == '~')
|
|
|
2128 filename = Fexpand_file_name (filename, Qnil);
|
|
|
2129 linkname = Fexpand_file_name (linkname, Qnil);
|
|
|
2130
|
|
|
2131 /* If the file name has special constructs in it,
|
|
|
2132 call the corresponding file handler. */
|
|
|
2133 handler = Ffind_file_name_handler (filename, Qmake_symbolic_link);
|
|
|
2134 if (!NILP (handler))
|
|
|
2135 RETURN_UNGCPRO (call4 (handler, Qmake_symbolic_link, filename, linkname,
|
|
|
2136 ok_if_already_exists));
|
|
|
2137
|
|
|
2138 /* If the new link name has special constructs in it,
|
|
|
2139 call the corresponding file handler. */
|
|
|
2140 handler = Ffind_file_name_handler (linkname, Qmake_symbolic_link);
|
|
|
2141 if (!NILP (handler))
|
|
|
2142 RETURN_UNGCPRO (call4 (handler, Qmake_symbolic_link, filename,
|
|
|
2143 linkname, ok_if_already_exists));
|
|
|
2144
|
|
771
|
2145 #ifdef HAVE_SYMLINK
|
|
428
|
2146 if (NILP (ok_if_already_exists)
|
|
|
2147 || INTP (ok_if_already_exists))
|
|
|
2148 barf_or_query_if_file_exists (linkname, "make it a link",
|
|
|
2149 INTP (ok_if_already_exists), 0);
|
|
|
2150
|
|
771
|
2151 qxe_unlink (XSTRING_DATA (linkname));
|
|
|
2152 if (0 > qxe_symlink (XSTRING_DATA (filename),
|
|
|
2153 XSTRING_DATA (linkname)))
|
|
428
|
2154 {
|
|
|
2155 report_file_error ("Making symbolic link",
|
|
563
|
2156 list3 (Qunbound, filename, linkname));
|
|
428
|
2157 }
|
|
771
|
2158 #endif
|
|
442
|
2159
|
|
428
|
2160 UNGCPRO;
|
|
|
2161 return Qnil;
|
|
|
2162 }
|
|
|
2163
|
|
|
2164 #ifdef HPUX_NET
|
|
|
2165
|
|
|
2166 DEFUN ("sysnetunam", Fsysnetunam, 2, 2, 0, /*
|
|
|
2167 Open a network connection to PATH using LOGIN as the login string.
|
|
|
2168 */
|
|
|
2169 (path, login))
|
|
|
2170 {
|
|
|
2171 int netresult;
|
|
440
|
2172 const char *path_ext;
|
|
|
2173 const char *login_ext;
|
|
428
|
2174
|
|
|
2175 CHECK_STRING (path);
|
|
|
2176 CHECK_STRING (login);
|
|
|
2177
|
|
|
2178 /* netunam, being a strange-o system call only used once, is not
|
|
|
2179 encapsulated. */
|
|
440
|
2180
|
|
442
|
2181 LISP_STRING_TO_EXTERNAL (path, path_ext, Qfile_name);
|
|
|
2182 LISP_STRING_TO_EXTERNAL (login, login_ext, Qnative);
|
|
440
|
2183
|
|
|
2184 netresult = netunam (path_ext, login_ext);
|
|
|
2185
|
|
|
2186 return netresult == -1 ? Qnil : Qt;
|
|
428
|
2187 }
|
|
|
2188 #endif /* HPUX_NET */
|
|
|
2189
|
|
|
2190 DEFUN ("file-name-absolute-p", Ffile_name_absolute_p, 1, 1, 0, /*
|
|
|
2191 Return t if file FILENAME specifies an absolute path name.
|
|
|
2192 On Unix, this is a name starting with a `/' or a `~'.
|
|
|
2193 */
|
|
|
2194 (filename))
|
|
|
2195 {
|
|
|
2196 /* This function does not GC */
|
|
665
|
2197 Intbyte *ptr;
|
|
428
|
2198
|
|
|
2199 CHECK_STRING (filename);
|
|
|
2200 ptr = XSTRING_DATA (filename);
|
|
|
2201 return (IS_DIRECTORY_SEP (*ptr) || *ptr == '~'
|
|
657
|
2202 #ifdef WIN32_FILENAMES
|
|
428
|
2203 || (IS_DRIVE (*ptr) && ptr[1] == ':' && IS_DIRECTORY_SEP (ptr[2]))
|
|
|
2204 #endif
|
|
|
2205 ) ? Qt : Qnil;
|
|
|
2206 }
|
|
|
2207
|
|
|
2208 /* Return nonzero if file FILENAME exists and can be executed. */
|
|
|
2209
|
|
|
2210 static int
|
|
771
|
2211 check_executable (Lisp_Object filename)
|
|
428
|
2212 {
|
|
442
|
2213 #ifdef WIN32_NATIVE
|
|
428
|
2214 struct stat st;
|
|
771
|
2215 if (qxe_stat (XSTRING_DATA (filename), &st) < 0)
|
|
428
|
2216 return 0;
|
|
|
2217 return ((st.st_mode & S_IEXEC) != 0);
|
|
442
|
2218 #else /* not WIN32_NATIVE */
|
|
428
|
2219 #ifdef HAVE_EACCESS
|
|
771
|
2220 return qxe_eaccess (XSTRING_DATA (filename), X_OK) >= 0;
|
|
428
|
2221 #else
|
|
|
2222 /* Access isn't quite right because it uses the real uid
|
|
|
2223 and we really want to test with the effective uid.
|
|
|
2224 But Unix doesn't give us a right way to do it. */
|
|
771
|
2225 return qxe_access (XSTRING_DATA (filename), X_OK) >= 0;
|
|
428
|
2226 #endif /* HAVE_EACCESS */
|
|
442
|
2227 #endif /* not WIN32_NATIVE */
|
|
428
|
2228 }
|
|
|
2229
|
|
|
2230 /* Return nonzero if file FILENAME exists and can be written. */
|
|
|
2231
|
|
|
2232 static int
|
|
771
|
2233 check_writable (const Intbyte *filename)
|
|
428
|
2234 {
|
|
|
2235 #ifdef HAVE_EACCESS
|
|
771
|
2236 return (qxe_eaccess (filename, W_OK) >= 0);
|
|
428
|
2237 #else
|
|
|
2238 /* Access isn't quite right because it uses the real uid
|
|
|
2239 and we really want to test with the effective uid.
|
|
|
2240 But Unix doesn't give us a right way to do it.
|
|
|
2241 Opening with O_WRONLY could work for an ordinary file,
|
|
|
2242 but would lose for directories. */
|
|
771
|
2243 return (qxe_access (filename, W_OK) >= 0);
|
|
428
|
2244 #endif
|
|
|
2245 }
|
|
|
2246
|
|
|
2247 DEFUN ("file-exists-p", Ffile_exists_p, 1, 1, 0, /*
|
|
|
2248 Return t if file FILENAME exists. (This does not mean you can read it.)
|
|
|
2249 See also `file-readable-p' and `file-attributes'.
|
|
|
2250 */
|
|
|
2251 (filename))
|
|
|
2252 {
|
|
442
|
2253 /* This function can call lisp; GC checked 2000-07-11 ben */
|
|
428
|
2254 Lisp_Object abspath;
|
|
|
2255 Lisp_Object handler;
|
|
|
2256 struct stat statbuf;
|
|
|
2257 struct gcpro gcpro1;
|
|
|
2258
|
|
|
2259 CHECK_STRING (filename);
|
|
|
2260 abspath = Fexpand_file_name (filename, Qnil);
|
|
|
2261
|
|
|
2262 /* If the file name has special constructs in it,
|
|
|
2263 call the corresponding file handler. */
|
|
|
2264 GCPRO1 (abspath);
|
|
|
2265 handler = Ffind_file_name_handler (abspath, Qfile_exists_p);
|
|
|
2266 UNGCPRO;
|
|
|
2267 if (!NILP (handler))
|
|
|
2268 return call2 (handler, Qfile_exists_p, abspath);
|
|
|
2269
|
|
771
|
2270 return qxe_stat (XSTRING_DATA (abspath), &statbuf) >= 0 ? Qt : Qnil;
|
|
428
|
2271 }
|
|
|
2272
|
|
|
2273 DEFUN ("file-executable-p", Ffile_executable_p, 1, 1, 0, /*
|
|
|
2274 Return t if FILENAME can be executed by you.
|
|
|
2275 For a directory, this means you can access files in that directory.
|
|
|
2276 */
|
|
|
2277 (filename))
|
|
|
2278
|
|
|
2279 {
|
|
442
|
2280 /* This function can GC. GC checked 07-11-2000 ben. */
|
|
428
|
2281 Lisp_Object abspath;
|
|
|
2282 Lisp_Object handler;
|
|
|
2283 struct gcpro gcpro1;
|
|
|
2284
|
|
|
2285 CHECK_STRING (filename);
|
|
|
2286 abspath = Fexpand_file_name (filename, Qnil);
|
|
|
2287
|
|
|
2288 /* If the file name has special constructs in it,
|
|
|
2289 call the corresponding file handler. */
|
|
|
2290 GCPRO1 (abspath);
|
|
|
2291 handler = Ffind_file_name_handler (abspath, Qfile_executable_p);
|
|
|
2292 UNGCPRO;
|
|
|
2293 if (!NILP (handler))
|
|
|
2294 return call2 (handler, Qfile_executable_p, abspath);
|
|
|
2295
|
|
771
|
2296 return check_executable (abspath) ? Qt : Qnil;
|
|
428
|
2297 }
|
|
|
2298
|
|
|
2299 DEFUN ("file-readable-p", Ffile_readable_p, 1, 1, 0, /*
|
|
|
2300 Return t if file FILENAME exists and you can read it.
|
|
|
2301 See also `file-exists-p' and `file-attributes'.
|
|
|
2302 */
|
|
|
2303 (filename))
|
|
|
2304 {
|
|
|
2305 /* This function can GC */
|
|
|
2306 Lisp_Object abspath = Qnil;
|
|
|
2307 Lisp_Object handler;
|
|
|
2308 struct gcpro gcpro1;
|
|
|
2309 GCPRO1 (abspath);
|
|
|
2310
|
|
|
2311 CHECK_STRING (filename);
|
|
|
2312 abspath = Fexpand_file_name (filename, Qnil);
|
|
|
2313
|
|
|
2314 /* If the file name has special constructs in it,
|
|
|
2315 call the corresponding file handler. */
|
|
|
2316 handler = Ffind_file_name_handler (abspath, Qfile_readable_p);
|
|
|
2317 if (!NILP (handler))
|
|
|
2318 RETURN_UNGCPRO (call2 (handler, Qfile_readable_p, abspath));
|
|
|
2319
|
|
657
|
2320 #if defined(WIN32_FILENAMES)
|
|
428
|
2321 /* Under MS-DOS and Windows, open does not work for directories. */
|
|
|
2322 UNGCPRO;
|
|
771
|
2323 if (qxe_access (XSTRING_DATA (abspath), 0) == 0)
|
|
428
|
2324 return Qt;
|
|
|
2325 else
|
|
|
2326 return Qnil;
|
|
657
|
2327 #else /* not WIN32_FILENAMES */
|
|
428
|
2328 {
|
|
771
|
2329 int desc = qxe_interruptible_open (XSTRING_DATA (abspath),
|
|
|
2330 O_RDONLY | OPEN_BINARY, 0);
|
|
428
|
2331 UNGCPRO;
|
|
|
2332 if (desc < 0)
|
|
|
2333 return Qnil;
|
|
771
|
2334 retry_close (desc);
|
|
428
|
2335 return Qt;
|
|
|
2336 }
|
|
657
|
2337 #endif /* not WIN32_FILENAMES */
|
|
428
|
2338 }
|
|
|
2339
|
|
|
2340 /* Having this before file-symlink-p mysteriously caused it to be forgotten
|
|
|
2341 on the RT/PC. */
|
|
|
2342 DEFUN ("file-writable-p", Ffile_writable_p, 1, 1, 0, /*
|
|
|
2343 Return t if file FILENAME can be written or created by you.
|
|
|
2344 */
|
|
|
2345 (filename))
|
|
|
2346 {
|
|
|
2347 /* This function can GC. GC checked 1997.04.10. */
|
|
|
2348 Lisp_Object abspath, dir;
|
|
|
2349 Lisp_Object handler;
|
|
|
2350 struct stat statbuf;
|
|
|
2351 struct gcpro gcpro1;
|
|
|
2352
|
|
|
2353 CHECK_STRING (filename);
|
|
|
2354 abspath = Fexpand_file_name (filename, Qnil);
|
|
|
2355
|
|
|
2356 /* If the file name has special constructs in it,
|
|
|
2357 call the corresponding file handler. */
|
|
|
2358 GCPRO1 (abspath);
|
|
|
2359 handler = Ffind_file_name_handler (abspath, Qfile_writable_p);
|
|
|
2360 UNGCPRO;
|
|
|
2361 if (!NILP (handler))
|
|
|
2362 return call2 (handler, Qfile_writable_p, abspath);
|
|
|
2363
|
|
771
|
2364 if (qxe_stat (XSTRING_DATA (abspath), &statbuf) >= 0)
|
|
|
2365 return (check_writable (XSTRING_DATA (abspath))
|
|
428
|
2366 ? Qt : Qnil);
|
|
|
2367
|
|
|
2368
|
|
|
2369 GCPRO1 (abspath);
|
|
|
2370 dir = Ffile_name_directory (abspath);
|
|
|
2371 UNGCPRO;
|
|
771
|
2372 return (check_writable (!NILP (dir) ? XSTRING_DATA (dir) : (Intbyte *) "")
|
|
428
|
2373 ? Qt : Qnil);
|
|
|
2374 }
|
|
|
2375
|
|
|
2376 DEFUN ("file-symlink-p", Ffile_symlink_p, 1, 1, 0, /*
|
|
|
2377 Return non-nil if file FILENAME is the name of a symbolic link.
|
|
|
2378 The value is the name of the file to which it is linked.
|
|
|
2379 Otherwise returns nil.
|
|
|
2380 */
|
|
|
2381 (filename))
|
|
|
2382 {
|
|
|
2383 /* This function can GC. GC checked 1997.04.10. */
|
|
442
|
2384 /* XEmacs change: run handlers even if local machine doesn't have symlinks */
|
|
771
|
2385 #ifdef HAVE_READLINK
|
|
|
2386 Intbyte *buf;
|
|
428
|
2387 int bufsize;
|
|
|
2388 int valsize;
|
|
|
2389 Lisp_Object val;
|
|
442
|
2390 #endif
|
|
428
|
2391 Lisp_Object handler;
|
|
|
2392 struct gcpro gcpro1;
|
|
|
2393
|
|
|
2394 CHECK_STRING (filename);
|
|
|
2395 filename = Fexpand_file_name (filename, Qnil);
|
|
|
2396
|
|
|
2397 /* If the file name has special constructs in it,
|
|
|
2398 call the corresponding file handler. */
|
|
|
2399 GCPRO1 (filename);
|
|
|
2400 handler = Ffind_file_name_handler (filename, Qfile_symlink_p);
|
|
|
2401 UNGCPRO;
|
|
|
2402 if (!NILP (handler))
|
|
|
2403 return call2 (handler, Qfile_symlink_p, filename);
|
|
|
2404
|
|
771
|
2405 #ifdef HAVE_READLINK
|
|
428
|
2406 bufsize = 100;
|
|
|
2407 while (1)
|
|
|
2408 {
|
|
771
|
2409 buf = xnew_array_and_zero (Intbyte, bufsize);
|
|
|
2410 valsize = qxe_readlink (XSTRING_DATA (filename),
|
|
|
2411 buf, bufsize);
|
|
428
|
2412 if (valsize < bufsize) break;
|
|
|
2413 /* Buffer was not long enough */
|
|
|
2414 xfree (buf);
|
|
|
2415 bufsize *= 2;
|
|
|
2416 }
|
|
|
2417 if (valsize == -1)
|
|
|
2418 {
|
|
|
2419 xfree (buf);
|
|
|
2420 return Qnil;
|
|
|
2421 }
|
|
771
|
2422 val = make_string (buf, valsize);
|
|
428
|
2423 xfree (buf);
|
|
|
2424 return val;
|
|
771
|
2425 #else /* not HAVE_READLINK */
|
|
428
|
2426 return Qnil;
|
|
771
|
2427 #endif /* not HAVE_READLINK */
|
|
428
|
2428 }
|
|
|
2429
|
|
|
2430 DEFUN ("file-directory-p", Ffile_directory_p, 1, 1, 0, /*
|
|
|
2431 Return t if file FILENAME is the name of a directory as a file.
|
|
|
2432 A directory name spec may be given instead; then the value is t
|
|
|
2433 if the directory so specified exists and really is a directory.
|
|
|
2434 */
|
|
|
2435 (filename))
|
|
|
2436 {
|
|
|
2437 /* This function can GC. GC checked 1997.04.10. */
|
|
|
2438 Lisp_Object abspath;
|
|
|
2439 struct stat st;
|
|
|
2440 Lisp_Object handler;
|
|
|
2441 struct gcpro gcpro1;
|
|
|
2442
|
|
|
2443 GCPRO1 (current_buffer->directory);
|
|
|
2444 abspath = expand_and_dir_to_file (filename,
|
|
|
2445 current_buffer->directory);
|
|
|
2446 UNGCPRO;
|
|
|
2447
|
|
|
2448 /* If the file name has special constructs in it,
|
|
|
2449 call the corresponding file handler. */
|
|
|
2450 GCPRO1 (abspath);
|
|
|
2451 handler = Ffind_file_name_handler (abspath, Qfile_directory_p);
|
|
|
2452 UNGCPRO;
|
|
|
2453 if (!NILP (handler))
|
|
|
2454 return call2 (handler, Qfile_directory_p, abspath);
|
|
|
2455
|
|
771
|
2456 if (qxe_stat (XSTRING_DATA (abspath), &st) < 0)
|
|
428
|
2457 return Qnil;
|
|
|
2458 return (st.st_mode & S_IFMT) == S_IFDIR ? Qt : Qnil;
|
|
|
2459 }
|
|
|
2460
|
|
|
2461 DEFUN ("file-accessible-directory-p", Ffile_accessible_directory_p, 1, 1, 0, /*
|
|
|
2462 Return t if file FILENAME is the name of a directory as a file,
|
|
|
2463 and files in that directory can be opened by you. In order to use a
|
|
|
2464 directory as a buffer's current directory, this predicate must return true.
|
|
|
2465 A directory name spec may be given instead; then the value is t
|
|
|
2466 if the directory so specified exists and really is a readable and
|
|
|
2467 searchable directory.
|
|
|
2468 */
|
|
|
2469 (filename))
|
|
|
2470 {
|
|
|
2471 /* This function can GC. GC checked 1997.04.10. */
|
|
|
2472 Lisp_Object handler;
|
|
|
2473
|
|
|
2474 /* If the file name has special constructs in it,
|
|
|
2475 call the corresponding file handler. */
|
|
|
2476 handler = Ffind_file_name_handler (filename, Qfile_accessible_directory_p);
|
|
|
2477 if (!NILP (handler))
|
|
|
2478 return call2 (handler, Qfile_accessible_directory_p,
|
|
|
2479 filename);
|
|
|
2480
|
|
442
|
2481 #if !defined(WIN32_NATIVE)
|
|
428
|
2482 if (NILP (Ffile_directory_p (filename)))
|
|
|
2483 return (Qnil);
|
|
|
2484 else
|
|
|
2485 return Ffile_executable_p (filename);
|
|
|
2486 #else
|
|
|
2487 {
|
|
|
2488 int tem;
|
|
|
2489 struct gcpro gcpro1;
|
|
|
2490 /* It's an unlikely combination, but yes we really do need to gcpro:
|
|
|
2491 Suppose that file-accessible-directory-p has no handler, but
|
|
|
2492 file-directory-p does have a handler; this handler causes a GC which
|
|
|
2493 relocates the string in `filename'; and finally file-directory-p
|
|
|
2494 returns non-nil. Then we would end up passing a garbaged string
|
|
|
2495 to file-executable-p. */
|
|
|
2496 GCPRO1 (filename);
|
|
|
2497 tem = (NILP (Ffile_directory_p (filename))
|
|
|
2498 || NILP (Ffile_executable_p (filename)));
|
|
|
2499 UNGCPRO;
|
|
|
2500 return tem ? Qnil : Qt;
|
|
|
2501 }
|
|
442
|
2502 #endif /* !defined(WIN32_NATIVE) */
|
|
428
|
2503 }
|
|
|
2504
|
|
|
2505 DEFUN ("file-regular-p", Ffile_regular_p, 1, 1, 0, /*
|
|
|
2506 Return t if file FILENAME is the name of a regular file.
|
|
|
2507 This is the sort of file that holds an ordinary stream of data bytes.
|
|
|
2508 */
|
|
|
2509 (filename))
|
|
|
2510 {
|
|
|
2511 /* This function can GC. GC checked 1997.04.10. */
|
|
|
2512 Lisp_Object abspath;
|
|
|
2513 struct stat st;
|
|
|
2514 Lisp_Object handler;
|
|
|
2515 struct gcpro gcpro1;
|
|
|
2516
|
|
|
2517 GCPRO1 (current_buffer->directory);
|
|
|
2518 abspath = expand_and_dir_to_file (filename, current_buffer->directory);
|
|
|
2519 UNGCPRO;
|
|
|
2520
|
|
|
2521 /* If the file name has special constructs in it,
|
|
|
2522 call the corresponding file handler. */
|
|
|
2523 GCPRO1 (abspath);
|
|
|
2524 handler = Ffind_file_name_handler (abspath, Qfile_regular_p);
|
|
|
2525 UNGCPRO;
|
|
|
2526 if (!NILP (handler))
|
|
|
2527 return call2 (handler, Qfile_regular_p, abspath);
|
|
|
2528
|
|
771
|
2529 if (qxe_stat (XSTRING_DATA (abspath), &st) < 0)
|
|
428
|
2530 return Qnil;
|
|
|
2531 return (st.st_mode & S_IFMT) == S_IFREG ? Qt : Qnil;
|
|
|
2532 }
|
|
|
2533
|
|
|
2534 DEFUN ("file-modes", Ffile_modes, 1, 1, 0, /*
|
|
444
|
2535 Return mode bits of file named FILENAME, as an integer.
|
|
428
|
2536 */
|
|
|
2537 (filename))
|
|
|
2538 {
|
|
|
2539 /* This function can GC. GC checked 1997.04.10. */
|
|
|
2540 Lisp_Object abspath;
|
|
|
2541 struct stat st;
|
|
|
2542 Lisp_Object handler;
|
|
|
2543 struct gcpro gcpro1;
|
|
|
2544
|
|
|
2545 GCPRO1 (current_buffer->directory);
|
|
|
2546 abspath = expand_and_dir_to_file (filename,
|
|
|
2547 current_buffer->directory);
|
|
|
2548 UNGCPRO;
|
|
|
2549
|
|
|
2550 /* If the file name has special constructs in it,
|
|
|
2551 call the corresponding file handler. */
|
|
|
2552 GCPRO1 (abspath);
|
|
|
2553 handler = Ffind_file_name_handler (abspath, Qfile_modes);
|
|
|
2554 UNGCPRO;
|
|
|
2555 if (!NILP (handler))
|
|
|
2556 return call2 (handler, Qfile_modes, abspath);
|
|
|
2557
|
|
771
|
2558 if (qxe_stat (XSTRING_DATA (abspath), &st) < 0)
|
|
428
|
2559 return Qnil;
|
|
|
2560 /* Syncing with FSF 19.34.6 note: not in FSF, #if 0'ed out here. */
|
|
|
2561 #if 0
|
|
442
|
2562 #ifdef WIN32_NATIVE
|
|
771
|
2563 if (check_executable (abspath))
|
|
428
|
2564 st.st_mode |= S_IEXEC;
|
|
442
|
2565 #endif /* WIN32_NATIVE */
|
|
428
|
2566 #endif /* 0 */
|
|
|
2567
|
|
|
2568 return make_int (st.st_mode & 07777);
|
|
|
2569 }
|
|
|
2570
|
|
|
2571 DEFUN ("set-file-modes", Fset_file_modes, 2, 2, 0, /*
|
|
444
|
2572 Set mode bits of file named FILENAME to MODE (an integer).
|
|
428
|
2573 Only the 12 low bits of MODE are used.
|
|
|
2574 */
|
|
|
2575 (filename, mode))
|
|
|
2576 {
|
|
|
2577 /* This function can GC. GC checked 1997.04.10. */
|
|
|
2578 Lisp_Object abspath;
|
|
|
2579 Lisp_Object handler;
|
|
|
2580 struct gcpro gcpro1;
|
|
|
2581
|
|
|
2582 GCPRO1 (current_buffer->directory);
|
|
|
2583 abspath = Fexpand_file_name (filename, current_buffer->directory);
|
|
|
2584 UNGCPRO;
|
|
|
2585
|
|
|
2586 CHECK_INT (mode);
|
|
|
2587
|
|
|
2588 /* If the file name has special constructs in it,
|
|
|
2589 call the corresponding file handler. */
|
|
|
2590 GCPRO1 (abspath);
|
|
|
2591 handler = Ffind_file_name_handler (abspath, Qset_file_modes);
|
|
|
2592 UNGCPRO;
|
|
|
2593 if (!NILP (handler))
|
|
|
2594 return call3 (handler, Qset_file_modes, abspath, mode);
|
|
|
2595
|
|
771
|
2596 if (qxe_chmod (XSTRING_DATA (abspath), XINT (mode)) < 0)
|
|
563
|
2597 report_file_error ("Doing chmod", abspath);
|
|
428
|
2598
|
|
|
2599 return Qnil;
|
|
|
2600 }
|
|
|
2601
|
|
|
2602 DEFUN ("set-default-file-modes", Fset_default_file_modes, 1, 1, 0, /*
|
|
|
2603 Set the file permission bits for newly created files.
|
|
444
|
2604 The argument MODE should be an integer; if a bit in MODE is 1,
|
|
|
2605 subsequently created files will not have the permission corresponding
|
|
|
2606 to that bit enabled. Only the low 9 bits are used.
|
|
428
|
2607 This setting is inherited by subprocesses.
|
|
|
2608 */
|
|
|
2609 (mode))
|
|
|
2610 {
|
|
|
2611 CHECK_INT (mode);
|
|
|
2612
|
|
|
2613 umask ((~ XINT (mode)) & 0777);
|
|
|
2614
|
|
|
2615 return Qnil;
|
|
|
2616 }
|
|
|
2617
|
|
|
2618 DEFUN ("default-file-modes", Fdefault_file_modes, 0, 0, 0, /*
|
|
|
2619 Return the default file protection for created files.
|
|
|
2620 The umask value determines which permissions are enabled in newly
|
|
|
2621 created files. If a permission's bit in the umask is 1, subsequently
|
|
|
2622 created files will not have that permission enabled.
|
|
|
2623 */
|
|
|
2624 ())
|
|
|
2625 {
|
|
|
2626 int mode;
|
|
|
2627
|
|
|
2628 mode = umask (0);
|
|
|
2629 umask (mode);
|
|
|
2630
|
|
|
2631 return make_int ((~ mode) & 0777);
|
|
|
2632 }
|
|
|
2633
|
|
|
2634 DEFUN ("unix-sync", Funix_sync, 0, 0, "", /*
|
|
|
2635 Tell Unix to finish all pending disk updates.
|
|
|
2636 */
|
|
|
2637 ())
|
|
|
2638 {
|
|
442
|
2639 #ifndef WIN32_NATIVE
|
|
428
|
2640 sync ();
|
|
|
2641 #endif
|
|
|
2642 return Qnil;
|
|
|
2643 }
|
|
|
2644
|
|
|
2645
|
|
|
2646 DEFUN ("file-newer-than-file-p", Ffile_newer_than_file_p, 2, 2, 0, /*
|
|
|
2647 Return t if file FILE1 is newer than file FILE2.
|
|
|
2648 If FILE1 does not exist, the answer is nil;
|
|
|
2649 otherwise, if FILE2 does not exist, the answer is t.
|
|
|
2650 */
|
|
|
2651 (file1, file2))
|
|
|
2652 {
|
|
|
2653 /* This function can GC. GC checked 1997.04.10. */
|
|
|
2654 Lisp_Object abspath1, abspath2;
|
|
|
2655 struct stat st;
|
|
|
2656 int mtime1;
|
|
|
2657 Lisp_Object handler;
|
|
|
2658 struct gcpro gcpro1, gcpro2, gcpro3;
|
|
|
2659
|
|
|
2660 CHECK_STRING (file1);
|
|
|
2661 CHECK_STRING (file2);
|
|
|
2662
|
|
|
2663 abspath1 = Qnil;
|
|
|
2664 abspath2 = Qnil;
|
|
|
2665
|
|
|
2666 GCPRO3 (abspath1, abspath2, current_buffer->directory);
|
|
|
2667 abspath1 = expand_and_dir_to_file (file1, current_buffer->directory);
|
|
|
2668 abspath2 = expand_and_dir_to_file (file2, current_buffer->directory);
|
|
|
2669
|
|
|
2670 /* If the file name has special constructs in it,
|
|
|
2671 call the corresponding file handler. */
|
|
|
2672 handler = Ffind_file_name_handler (abspath1, Qfile_newer_than_file_p);
|
|
|
2673 if (NILP (handler))
|
|
|
2674 handler = Ffind_file_name_handler (abspath2, Qfile_newer_than_file_p);
|
|
|
2675 UNGCPRO;
|
|
|
2676 if (!NILP (handler))
|
|
|
2677 return call3 (handler, Qfile_newer_than_file_p, abspath1,
|
|
|
2678 abspath2);
|
|
|
2679
|
|
771
|
2680 if (qxe_stat (XSTRING_DATA (abspath1), &st) < 0)
|
|
428
|
2681 return Qnil;
|
|
|
2682
|
|
|
2683 mtime1 = st.st_mtime;
|
|
|
2684
|
|
771
|
2685 if (qxe_stat (XSTRING_DATA (abspath2), &st) < 0)
|
|
428
|
2686 return Qt;
|
|
|
2687
|
|
|
2688 return (mtime1 > st.st_mtime) ? Qt : Qnil;
|
|
|
2689 }
|
|
|
2690
|
|
|
2691
|
|
|
2692 /* Stack sizes > 2**16 is a good way to elicit compiler bugs */
|
|
|
2693 /* #define READ_BUF_SIZE (2 << 16) */
|
|
|
2694 #define READ_BUF_SIZE (1 << 15)
|
|
|
2695
|
|
|
2696 DEFUN ("insert-file-contents-internal", Finsert_file_contents_internal,
|
|
|
2697 1, 7, 0, /*
|
|
|
2698 Insert contents of file FILENAME after point; no coding-system frobbing.
|
|
|
2699 This function is identical to `insert-file-contents' except for the
|
|
771
|
2700 handling of the CODESYS and USED-CODESYS arguments.
|
|
|
2701
|
|
|
2702 The file is decoded according to CODESYS; if omitted, no conversion
|
|
|
2703 happens. If USED-CODESYS is non-nil, it should be a symbol, and the actual
|
|
|
2704 coding system that was used for the decoding is stored into it. It will in
|
|
|
2705 general be different from CODESYS if CODESYS specifies automatic encoding
|
|
|
2706 detection or end-of-line detection.
|
|
428
|
2707
|
|
444
|
2708 Currently START and END refer to byte positions (as opposed to character
|
|
771
|
2709 positions), even in Mule and under MS Windows. (Fixing this, particularly
|
|
|
2710 under Mule, is very difficult.)
|
|
428
|
2711 */
|
|
444
|
2712 (filename, visit, start, end, replace, codesys, used_codesys))
|
|
428
|
2713 {
|
|
|
2714 /* This function can call lisp */
|
|
|
2715 struct stat st;
|
|
|
2716 int fd;
|
|
|
2717 int saverrno = 0;
|
|
|
2718 Charcount inserted = 0;
|
|
|
2719 int speccount;
|
|
|
2720 struct gcpro gcpro1, gcpro2, gcpro3, gcpro4, gcpro5;
|
|
|
2721 Lisp_Object handler = Qnil, val;
|
|
|
2722 int total;
|
|
665
|
2723 Intbyte read_buf[READ_BUF_SIZE];
|
|
428
|
2724 int mc_count;
|
|
|
2725 struct buffer *buf = current_buffer;
|
|
|
2726 Lisp_Object curbuf;
|
|
|
2727 int not_regular = 0;
|
|
771
|
2728 int do_speedy_insert =
|
|
|
2729 coding_system_is_binary (Fget_coding_system (codesys));
|
|
428
|
2730
|
|
|
2731 if (buf->base_buffer && ! NILP (visit))
|
|
563
|
2732 invalid_operation ("Cannot do file visiting in an indirect buffer", Qunbound);
|
|
428
|
2733
|
|
|
2734 /* No need to call Fbarf_if_buffer_read_only() here.
|
|
|
2735 That's called in begin_multiple_change() or wherever. */
|
|
|
2736
|
|
|
2737 val = Qnil;
|
|
|
2738
|
|
|
2739 /* #### dmoore - should probably check in various places to see if
|
|
|
2740 curbuf was killed and if so signal an error? */
|
|
|
2741
|
|
793
|
2742 curbuf = wrap_buffer (buf);
|
|
428
|
2743
|
|
|
2744 GCPRO5 (filename, val, visit, handler, curbuf);
|
|
|
2745
|
|
|
2746 mc_count = (NILP (replace)) ?
|
|
|
2747 begin_multiple_change (buf, BUF_PT (buf), BUF_PT (buf)) :
|
|
|
2748 begin_multiple_change (buf, BUF_BEG (buf), BUF_Z (buf));
|
|
|
2749
|
|
|
2750 speccount = specpdl_depth (); /* begin_multiple_change also adds
|
|
|
2751 an unwind_protect */
|
|
|
2752
|
|
|
2753 filename = Fexpand_file_name (filename, Qnil);
|
|
|
2754
|
|
|
2755 /* If the file name has special constructs in it,
|
|
|
2756 call the corresponding file handler. */
|
|
|
2757 handler = Ffind_file_name_handler (filename, Qinsert_file_contents);
|
|
|
2758 if (!NILP (handler))
|
|
|
2759 {
|
|
|
2760 val = call6 (handler, Qinsert_file_contents, filename,
|
|
444
|
2761 visit, start, end, replace);
|
|
428
|
2762 goto handled;
|
|
|
2763 }
|
|
|
2764
|
|
|
2765 if (!NILP (used_codesys))
|
|
|
2766 CHECK_SYMBOL (used_codesys);
|
|
|
2767
|
|
444
|
2768 if ( (!NILP (start) || !NILP (end)) && !NILP (visit) )
|
|
563
|
2769 invalid_operation ("Attempt to visit less than an entire file", Qunbound);
|
|
428
|
2770
|
|
|
2771 fd = -1;
|
|
|
2772
|
|
771
|
2773 if (qxe_stat (XSTRING_DATA (filename), &st) < 0)
|
|
428
|
2774 {
|
|
771
|
2775 if (fd >= 0) retry_close (fd);
|
|
428
|
2776 badopen:
|
|
|
2777 if (NILP (visit))
|
|
563
|
2778 report_file_error ("Opening input file", filename);
|
|
428
|
2779 st.st_mtime = -1;
|
|
|
2780 goto notfound;
|
|
|
2781 }
|
|
|
2782
|
|
|
2783 #ifdef S_IFREG
|
|
|
2784 /* Signal an error if we are accessing a non-regular file, with
|
|
444
|
2785 REPLACE, START or END being non-nil. */
|
|
428
|
2786 if (!S_ISREG (st.st_mode))
|
|
|
2787 {
|
|
|
2788 not_regular = 1;
|
|
|
2789
|
|
|
2790 if (!NILP (visit))
|
|
|
2791 goto notfound;
|
|
|
2792
|
|
444
|
2793 if (!NILP (replace) || !NILP (start) || !NILP (end))
|
|
428
|
2794 {
|
|
|
2795 end_multiple_change (buf, mc_count);
|
|
|
2796
|
|
444
|
2797 RETURN_UNGCPRO
|
|
|
2798 (Fsignal (Qfile_error,
|
|
771
|
2799 list2 (build_msg_string("not a regular file"),
|
|
444
|
2800 filename)));
|
|
428
|
2801 }
|
|
|
2802 }
|
|
|
2803 #endif /* S_IFREG */
|
|
|
2804
|
|
444
|
2805 if (!NILP (start))
|
|
|
2806 CHECK_INT (start);
|
|
428
|
2807 else
|
|
444
|
2808 start = Qzero;
|
|
428
|
2809
|
|
|
2810 if (!NILP (end))
|
|
|
2811 CHECK_INT (end);
|
|
|
2812
|
|
|
2813 if (fd < 0)
|
|
|
2814 {
|
|
771
|
2815 if ((fd = qxe_interruptible_open (XSTRING_DATA (filename),
|
|
|
2816 O_RDONLY | OPEN_BINARY, 0)) < 0)
|
|
428
|
2817 goto badopen;
|
|
|
2818 }
|
|
|
2819
|
|
|
2820 /* Replacement should preserve point as it preserves markers. */
|
|
|
2821 if (!NILP (replace))
|
|
|
2822 record_unwind_protect (restore_point_unwind, Fpoint_marker (Qnil, Qnil));
|
|
|
2823
|
|
|
2824 record_unwind_protect (close_file_unwind, make_int (fd));
|
|
|
2825
|
|
|
2826 /* Supposedly happens on VMS. */
|
|
|
2827 if (st.st_size < 0)
|
|
563
|
2828 signal_error (Qfile_error, "File size is negative", Qunbound);
|
|
428
|
2829
|
|
|
2830 if (NILP (end))
|
|
|
2831 {
|
|
|
2832 if (!not_regular)
|
|
|
2833 {
|
|
|
2834 end = make_int (st.st_size);
|
|
|
2835 if (XINT (end) != st.st_size)
|
|
563
|
2836 out_of_memory ("Maximum buffer size exceeded", Qunbound);
|
|
428
|
2837 }
|
|
|
2838 }
|
|
|
2839
|
|
|
2840 /* If requested, replace the accessible part of the buffer
|
|
|
2841 with the file contents. Avoid replacing text at the
|
|
|
2842 beginning or end of the buffer that matches the file contents;
|
|
771
|
2843 that preserves markers pointing to the unchanged parts. */
|
|
|
2844 /* The replace-mode code is currently implemented by comparing the
|
|
|
2845 file on disk with the contents in the buffer, character by character.
|
|
|
2846 That works only if the characters on disk are exactly what will go into
|
|
|
2847 the buffer -- i.e. `binary' conversion.
|
|
|
2848
|
|
|
2849 FSF tries to implement this in all situations, even the non-binary
|
|
|
2850 conversion, by (in that case) loading the whole converted file into a
|
|
|
2851 separate memory area, then doing the comparison. I really don't see
|
|
|
2852 the point of this, and it will fail spectacularly if the file is many
|
|
|
2853 megabytes in size. To try to get around this, we could certainly read
|
|
|
2854 from the beginning and decode as necessary before comparing, but doing
|
|
|
2855 the same at the end gets very difficult because of the possibility of
|
|
|
2856 modal coding systems -- trying to decode data from any point forward
|
|
|
2857 without decoding previous data might always give you different results
|
|
|
2858 from starting at the beginning. We could try further tricks like
|
|
|
2859 keeping track of which coding systems are non-modal and providing some
|
|
|
2860 extra method for such coding systems to be given a chunk of data that
|
|
|
2861 came from a specified location in a specified file and ask the coding
|
|
|
2862 systems to return a "sync point" from which the data can be read
|
|
|
2863 forward and have results guaranteed to be the same as reading from the
|
|
|
2864 beginning to that point, but I really don't think it's worth it. If
|
|
|
2865 we implemented the FSF "brute-force" method, we would have to put a
|
|
|
2866 reasonable maximum file size on the files. Is any of this worth it?
|
|
|
2867 --ben
|
|
|
2868
|
|
|
2869 */
|
|
|
2870
|
|
428
|
2871 if (!NILP (replace))
|
|
|
2872 {
|
|
771
|
2873 if (!do_speedy_insert)
|
|
|
2874 buffer_delete_range (buf, BUF_BEG (buf), BUF_Z (buf),
|
|
|
2875 !NILP (visit) ? INSDEL_NO_LOCKING : 0);
|
|
|
2876 else
|
|
428
|
2877 {
|
|
771
|
2878 char buffer[1 << 14];
|
|
|
2879 Charbpos same_at_start = BUF_BEGV (buf);
|
|
|
2880 Charbpos same_at_end = BUF_ZV (buf);
|
|
|
2881 int overlap;
|
|
|
2882
|
|
|
2883 /* Count how many chars at the start of the file
|
|
|
2884 match the text at the beginning of the buffer. */
|
|
|
2885 while (1)
|
|
|
2886 {
|
|
|
2887 int nread;
|
|
|
2888 Charbpos charbpos;
|
|
|
2889 nread = read_allowing_quit (fd, buffer, sizeof (buffer));
|
|
|
2890 if (nread < 0)
|
|
|
2891 report_file_error ("Reading", filename);
|
|
|
2892 else if (nread == 0)
|
|
|
2893 break;
|
|
|
2894 charbpos = 0;
|
|
|
2895 while (charbpos < nread && same_at_start < BUF_ZV (buf)
|
|
|
2896 && BUF_FETCH_CHAR (buf, same_at_start) == buffer[charbpos])
|
|
|
2897 same_at_start++, charbpos++;
|
|
|
2898 /* If we found a discrepancy, stop the scan.
|
|
|
2899 Otherwise loop around and scan the next bufferful. */
|
|
|
2900 if (charbpos != nread)
|
|
|
2901 break;
|
|
|
2902 }
|
|
|
2903 /* If the file matches the buffer completely,
|
|
|
2904 there's no need to replace anything. */
|
|
|
2905 if (same_at_start - BUF_BEGV (buf) == st.st_size)
|
|
|
2906 {
|
|
|
2907 retry_close (fd);
|
|
|
2908 unbind_to (speccount);
|
|
|
2909 /* Truncate the buffer to the size of the file. */
|
|
|
2910 buffer_delete_range (buf, same_at_start, same_at_end,
|
|
|
2911 !NILP (visit) ? INSDEL_NO_LOCKING : 0);
|
|
|
2912 goto handled;
|
|
|
2913 }
|
|
|
2914 /* Count how many chars at the end of the file
|
|
|
2915 match the text at the end of the buffer. */
|
|
|
2916 while (1)
|
|
|
2917 {
|
|
|
2918 int total_read, nread;
|
|
|
2919 Charbpos charbpos, curpos, trial;
|
|
|
2920
|
|
|
2921 /* At what file position are we now scanning? */
|
|
|
2922 curpos = st.st_size - (BUF_ZV (buf) - same_at_end);
|
|
|
2923 /* If the entire file matches the buffer tail, stop the scan. */
|
|
|
2924 if (curpos == 0)
|
|
|
2925 break;
|
|
|
2926 /* How much can we scan in the next step? */
|
|
|
2927 trial = min (curpos, (Charbpos) sizeof (buffer));
|
|
|
2928 if (lseek (fd, curpos - trial, 0) < 0)
|
|
|
2929 report_file_error ("Setting file position", filename);
|
|
|
2930
|
|
|
2931 total_read = 0;
|
|
|
2932 while (total_read < trial)
|
|
|
2933 {
|
|
|
2934 nread = read_allowing_quit (fd, buffer + total_read,
|
|
|
2935 trial - total_read);
|
|
|
2936 if (nread <= 0)
|
|
|
2937 report_file_error ("IO error reading file", filename);
|
|
|
2938 total_read += nread;
|
|
|
2939 }
|
|
|
2940 /* Scan this bufferful from the end, comparing with
|
|
|
2941 the Emacs buffer. */
|
|
|
2942 charbpos = total_read;
|
|
|
2943 /* Compare with same_at_start to avoid counting some buffer text
|
|
|
2944 as matching both at the file's beginning and at the end. */
|
|
|
2945 while (charbpos > 0 && same_at_end > same_at_start
|
|
|
2946 && BUF_FETCH_CHAR (buf, same_at_end - 1) ==
|
|
|
2947 buffer[charbpos - 1])
|
|
|
2948 same_at_end--, charbpos--;
|
|
|
2949 /* If we found a discrepancy, stop the scan.
|
|
|
2950 Otherwise loop around and scan the preceding bufferful. */
|
|
|
2951 if (charbpos != 0)
|
|
|
2952 break;
|
|
|
2953 /* If display current starts at beginning of line,
|
|
|
2954 keep it that way. */
|
|
|
2955 if (XBUFFER (XWINDOW (Fselected_window (Qnil))->buffer) == buf)
|
|
|
2956 XWINDOW (Fselected_window (Qnil))->start_at_line_beg =
|
|
|
2957 !NILP (Fbolp (wrap_buffer (buf)));
|
|
|
2958 }
|
|
|
2959
|
|
|
2960 /* Don't try to reuse the same piece of text twice. */
|
|
|
2961 overlap = same_at_start - BUF_BEGV (buf) -
|
|
|
2962 (same_at_end + st.st_size - BUF_ZV (buf));
|
|
|
2963 if (overlap > 0)
|
|
|
2964 same_at_end += overlap;
|
|
|
2965
|
|
|
2966 /* Arrange to read only the nonmatching middle part of the file. */
|
|
|
2967 start = make_int (same_at_start - BUF_BEGV (buf));
|
|
|
2968 end = make_int (st.st_size - (BUF_ZV (buf) - same_at_end));
|
|
|
2969
|
|
428
|
2970 buffer_delete_range (buf, same_at_start, same_at_end,
|
|
|
2971 !NILP (visit) ? INSDEL_NO_LOCKING : 0);
|
|
771
|
2972 /* Insert from the file at the proper position. */
|
|
|
2973 BUF_SET_PT (buf, same_at_start);
|
|
428
|
2974 }
|
|
|
2975 }
|
|
|
2976
|
|
|
2977 if (!not_regular)
|
|
|
2978 {
|
|
444
|
2979 total = XINT (end) - XINT (start);
|
|
428
|
2980
|
|
|
2981 /* Make sure point-max won't overflow after this insertion. */
|
|
|
2982 if (total != XINT (make_int (total)))
|
|
563
|
2983 out_of_memory ("Maximum buffer size exceeded", Qunbound);
|
|
428
|
2984 }
|
|
|
2985 else
|
|
|
2986 /* For a special file, all we can do is guess. The value of -1
|
|
|
2987 will make the stream functions read as much as possible. */
|
|
|
2988 total = -1;
|
|
|
2989
|
|
444
|
2990 if (XINT (start) != 0
|
|
428
|
2991 /* why was this here? asked jwz. The reason is that the replace-mode
|
|
|
2992 connivings above will normally put the file pointer other than
|
|
|
2993 where it should be. */
|
|
771
|
2994 || (!NILP (replace) && do_speedy_insert))
|
|
428
|
2995 {
|
|
444
|
2996 if (lseek (fd, XINT (start), 0) < 0)
|
|
563
|
2997 report_file_error ("Setting file position", filename);
|
|
428
|
2998 }
|
|
|
2999
|
|
|
3000 {
|
|
665
|
3001 Charbpos cur_point = BUF_PT (buf);
|
|
428
|
3002 struct gcpro ngcpro1;
|
|
|
3003 Lisp_Object stream = make_filedesc_input_stream (fd, 0, total,
|
|
|
3004 LSTR_ALLOW_QUIT);
|
|
|
3005
|
|
|
3006 NGCPRO1 (stream);
|
|
|
3007 Lstream_set_buffering (XLSTREAM (stream), LSTREAM_BLOCKN_BUFFERED, 65536);
|
|
771
|
3008 stream = make_coding_input_stream
|
|
|
3009 (XLSTREAM (stream), get_coding_system_for_text_file (codesys, 1),
|
|
|
3010 CODING_DECODE);
|
|
428
|
3011 Lstream_set_character_mode (XLSTREAM (stream));
|
|
|
3012 Lstream_set_buffering (XLSTREAM (stream), LSTREAM_BLOCKN_BUFFERED, 65536);
|
|
|
3013
|
|
|
3014 record_unwind_protect (delete_stream_unwind, stream);
|
|
|
3015
|
|
|
3016 /* No need to limit the amount of stuff we attempt to read. (It would
|
|
|
3017 be incorrect, anyway, when Mule is enabled.) Instead, the limiting
|
|
|
3018 occurs inside of the filedesc stream. */
|
|
|
3019 while (1)
|
|
|
3020 {
|
|
665
|
3021 Bytecount this_len;
|
|
428
|
3022 Charcount cc_inserted;
|
|
|
3023
|
|
|
3024 QUIT;
|
|
|
3025 this_len = Lstream_read (XLSTREAM (stream), read_buf,
|
|
|
3026 sizeof (read_buf));
|
|
|
3027
|
|
|
3028 if (this_len <= 0)
|
|
|
3029 {
|
|
|
3030 if (this_len < 0)
|
|
|
3031 saverrno = errno;
|
|
|
3032 break;
|
|
|
3033 }
|
|
|
3034
|
|
|
3035 cc_inserted = buffer_insert_raw_string_1 (buf, cur_point, read_buf,
|
|
|
3036 this_len,
|
|
|
3037 !NILP (visit)
|
|
|
3038 ? INSDEL_NO_LOCKING : 0);
|
|
|
3039 inserted += cc_inserted;
|
|
|
3040 cur_point += cc_inserted;
|
|
|
3041 }
|
|
|
3042 if (!NILP (used_codesys))
|
|
|
3043 {
|
|
|
3044 Fset (used_codesys,
|
|
771
|
3045 XCODING_SYSTEM_NAME
|
|
|
3046 (coding_stream_detected_coding_system (XLSTREAM (stream))));
|
|
428
|
3047 }
|
|
|
3048 NUNGCPRO;
|
|
|
3049 }
|
|
|
3050
|
|
|
3051 /* Close the file/stream */
|
|
771
|
3052 unbind_to (speccount);
|
|
428
|
3053
|
|
|
3054 if (saverrno != 0)
|
|
|
3055 {
|
|
563
|
3056 errno = saverrno;
|
|
|
3057 report_file_error ("Reading", filename);
|
|
428
|
3058 }
|
|
|
3059
|
|
|
3060 notfound:
|
|
|
3061 handled:
|
|
|
3062
|
|
|
3063 end_multiple_change (buf, mc_count);
|
|
|
3064
|
|
|
3065 if (!NILP (visit))
|
|
|
3066 {
|
|
|
3067 if (!EQ (buf->undo_list, Qt))
|
|
|
3068 buf->undo_list = Qnil;
|
|
|
3069 if (NILP (handler))
|
|
|
3070 {
|
|
|
3071 buf->modtime = st.st_mtime;
|
|
|
3072 buf->filename = filename;
|
|
|
3073 /* XEmacs addition: */
|
|
|
3074 /* This function used to be in C, ostensibly so that
|
|
|
3075 it could be called here. But that's just silly.
|
|
|
3076 There's no reason C code can't call out to Lisp
|
|
|
3077 code, and it's a lot cleaner this way. */
|
|
444
|
3078 /* Note: compute-buffer-file-truename is called for
|
|
|
3079 side-effect! Its return value is intentionally
|
|
|
3080 ignored. */
|
|
428
|
3081 if (!NILP (Ffboundp (Qcompute_buffer_file_truename)))
|
|
771
|
3082 call1 (Qcompute_buffer_file_truename, wrap_buffer (buf));
|
|
428
|
3083 }
|
|
|
3084 BUF_SAVE_MODIFF (buf) = BUF_MODIFF (buf);
|
|
|
3085 buf->auto_save_modified = BUF_MODIFF (buf);
|
|
|
3086 buf->saved_size = make_int (BUF_SIZE (buf));
|
|
|
3087 #ifdef CLASH_DETECTION
|
|
|
3088 if (NILP (handler))
|
|
|
3089 {
|
|
|
3090 if (!NILP (buf->file_truename))
|
|
|
3091 unlock_file (buf->file_truename);
|
|
|
3092 unlock_file (filename);
|
|
|
3093 }
|
|
|
3094 #endif /* CLASH_DETECTION */
|
|
|
3095 if (not_regular)
|
|
|
3096 RETURN_UNGCPRO (Fsignal (Qfile_error,
|
|
771
|
3097 list2 (build_msg_string ("not a regular file"),
|
|
428
|
3098 filename)));
|
|
|
3099
|
|
|
3100 /* If visiting nonexistent file, return nil. */
|
|
|
3101 if (buf->modtime == -1)
|
|
|
3102 report_file_error ("Opening input file",
|
|
563
|
3103 filename);
|
|
428
|
3104 }
|
|
|
3105
|
|
|
3106 /* Decode file format */
|
|
|
3107 if (inserted > 0)
|
|
|
3108 {
|
|
|
3109 Lisp_Object insval = call3 (Qformat_decode,
|
|
|
3110 Qnil, make_int (inserted), visit);
|
|
|
3111 CHECK_INT (insval);
|
|
|
3112 inserted = XINT (insval);
|
|
|
3113 }
|
|
|
3114
|
|
|
3115 if (inserted > 0)
|
|
|
3116 {
|
|
|
3117 Lisp_Object p;
|
|
|
3118 struct gcpro ngcpro1;
|
|
|
3119
|
|
|
3120 NGCPRO1 (p);
|
|
|
3121 EXTERNAL_LIST_LOOP (p, Vafter_insert_file_functions)
|
|
|
3122 {
|
|
|
3123 Lisp_Object insval =
|
|
|
3124 call1 (XCAR (p), make_int (inserted));
|
|
|
3125 if (!NILP (insval))
|
|
|
3126 {
|
|
|
3127 CHECK_NATNUM (insval);
|
|
|
3128 inserted = XINT (insval);
|
|
|
3129 }
|
|
|
3130 QUIT;
|
|
|
3131 }
|
|
|
3132 NUNGCPRO;
|
|
|
3133 }
|
|
|
3134
|
|
|
3135 UNGCPRO;
|
|
|
3136
|
|
|
3137 if (!NILP (val))
|
|
|
3138 return (val);
|
|
|
3139 else
|
|
|
3140 return (list2 (filename, make_int (inserted)));
|
|
|
3141 }
|
|
|
3142
|
|
|
3143
|
|
|
3144 static int a_write (Lisp_Object outstream, Lisp_Object instream, int pos,
|
|
|
3145 Lisp_Object *annot);
|
|
|
3146 static Lisp_Object build_annotations (Lisp_Object start, Lisp_Object end);
|
|
|
3147
|
|
|
3148 /* If build_annotations switched buffers, switch back to BUF.
|
|
|
3149 Kill the temporary buffer that was selected in the meantime. */
|
|
|
3150
|
|
|
3151 static Lisp_Object
|
|
|
3152 build_annotations_unwind (Lisp_Object buf)
|
|
|
3153 {
|
|
|
3154 Lisp_Object tembuf;
|
|
|
3155
|
|
|
3156 if (XBUFFER (buf) == current_buffer)
|
|
|
3157 return Qnil;
|
|
|
3158 tembuf = Fcurrent_buffer ();
|
|
|
3159 Fset_buffer (buf);
|
|
|
3160 Fkill_buffer (tembuf);
|
|
|
3161 return Qnil;
|
|
|
3162 }
|
|
|
3163
|
|
|
3164 DEFUN ("write-region-internal", Fwrite_region_internal, 3, 7,
|
|
|
3165 "r\nFWrite region to file: ", /*
|
|
|
3166 Write current region into specified file; no coding-system frobbing.
|
|
|
3167 This function is identical to `write-region' except for the handling
|
|
|
3168 of the CODESYS argument under XEmacs/Mule. (When Mule support is not
|
|
|
3169 present, both functions are identical and ignore the CODESYS argument.)
|
|
|
3170 If support for Mule exists in this Emacs, the file is encoded according
|
|
|
3171 to the value of CODESYS. If this is nil, no code conversion occurs.
|
|
764
|
3172
|
|
|
3173 As a special kludge to support auto-saving, when START is nil START and
|
|
|
3174 END are set to the beginning and end, respectively, of the buffer,
|
|
|
3175 regardless of any restrictions. Don't use this feature. It is documented
|
|
|
3176 here because write-region handler writers need to be aware of it.
|
|
428
|
3177 */
|
|
|
3178 (start, end, filename, append, visit, lockname, codesys))
|
|
|
3179 {
|
|
442
|
3180 /* This function can call lisp. GC checked 2000-07-28 ben */
|
|
428
|
3181 int desc;
|
|
|
3182 int failure;
|
|
|
3183 int save_errno = 0;
|
|
|
3184 struct stat st;
|
|
442
|
3185 Lisp_Object fn = Qnil;
|
|
428
|
3186 int speccount = specpdl_depth ();
|
|
|
3187 int visiting_other = STRINGP (visit);
|
|
|
3188 int visiting = (EQ (visit, Qt) || visiting_other);
|
|
|
3189 int quietly = (!visiting && !NILP (visit));
|
|
|
3190 Lisp_Object visit_file = Qnil;
|
|
|
3191 Lisp_Object annotations = Qnil;
|
|
|
3192 struct buffer *given_buffer;
|
|
665
|
3193 Charbpos start1, end1;
|
|
442
|
3194 struct gcpro gcpro1, gcpro2, gcpro3, gcpro4, gcpro5;
|
|
|
3195 struct gcpro ngcpro1, ngcpro2;
|
|
793
|
3196 Lisp_Object curbuf = wrap_buffer (current_buffer);
|
|
|
3197
|
|
442
|
3198
|
|
|
3199 /* start, end, visit, and append are never modified in this fun
|
|
|
3200 so we don't protect them. */
|
|
|
3201 GCPRO5 (visit_file, filename, codesys, lockname, annotations);
|
|
|
3202 NGCPRO2 (curbuf, fn);
|
|
|
3203
|
|
|
3204 /* [[ dmoore - if Fexpand_file_name or handlers kill the buffer,
|
|
428
|
3205 we should signal an error rather than blissfully continuing
|
|
|
3206 along. ARGH, this function is going to lose lose lose. We need
|
|
|
3207 to protect the current_buffer from being destroyed, but the
|
|
442
|
3208 multiple return points make this a pain in the butt. ]] we do
|
|
|
3209 protect curbuf now. --ben */
|
|
428
|
3210
|
|
771
|
3211 codesys = get_coding_system_for_text_file (codesys, 0);
|
|
428
|
3212
|
|
|
3213 if (current_buffer->base_buffer && ! NILP (visit))
|
|
442
|
3214 invalid_operation ("Cannot do file visiting in an indirect buffer",
|
|
|
3215 curbuf);
|
|
428
|
3216
|
|
|
3217 if (!NILP (start) && !STRINGP (start))
|
|
|
3218 get_buffer_range_char (current_buffer, start, end, &start1, &end1, 0);
|
|
|
3219
|
|
|
3220 {
|
|
|
3221 Lisp_Object handler;
|
|
|
3222
|
|
|
3223 if (visiting_other)
|
|
|
3224 visit_file = Fexpand_file_name (visit, Qnil);
|
|
|
3225 else
|
|
|
3226 visit_file = filename;
|
|
|
3227 filename = Fexpand_file_name (filename, Qnil);
|
|
|
3228
|
|
|
3229 if (NILP (lockname))
|
|
|
3230 lockname = visit_file;
|
|
|
3231
|
|
442
|
3232 /* We used to UNGCPRO here. BAD! visit_file is used below after
|
|
|
3233 more Lisp calling. */
|
|
428
|
3234 /* If the file name has special constructs in it,
|
|
|
3235 call the corresponding file handler. */
|
|
|
3236 handler = Ffind_file_name_handler (filename, Qwrite_region);
|
|
|
3237 /* If FILENAME has no handler, see if VISIT has one. */
|
|
|
3238 if (NILP (handler) && STRINGP (visit))
|
|
|
3239 handler = Ffind_file_name_handler (visit, Qwrite_region);
|
|
|
3240
|
|
|
3241 if (!NILP (handler))
|
|
|
3242 {
|
|
|
3243 Lisp_Object val = call8 (handler, Qwrite_region, start, end,
|
|
|
3244 filename, append, visit, lockname, codesys);
|
|
|
3245 if (visiting)
|
|
|
3246 {
|
|
|
3247 BUF_SAVE_MODIFF (current_buffer) = BUF_MODIFF (current_buffer);
|
|
|
3248 current_buffer->saved_size = make_int (BUF_SIZE (current_buffer));
|
|
|
3249 current_buffer->filename = visit_file;
|
|
|
3250 MARK_MODELINE_CHANGED;
|
|
|
3251 }
|
|
442
|
3252 NUNGCPRO;
|
|
|
3253 UNGCPRO;
|
|
428
|
3254 return val;
|
|
|
3255 }
|
|
|
3256 }
|
|
|
3257
|
|
|
3258 #ifdef CLASH_DETECTION
|
|
|
3259 if (!auto_saving)
|
|
442
|
3260 lock_file (lockname);
|
|
428
|
3261 #endif /* CLASH_DETECTION */
|
|
|
3262
|
|
|
3263 /* Special kludge to simplify auto-saving. */
|
|
|
3264 if (NILP (start))
|
|
|
3265 {
|
|
|
3266 start1 = BUF_BEG (current_buffer);
|
|
|
3267 end1 = BUF_Z (current_buffer);
|
|
|
3268 }
|
|
|
3269
|
|
|
3270 record_unwind_protect (build_annotations_unwind, Fcurrent_buffer ());
|
|
|
3271
|
|
|
3272 given_buffer = current_buffer;
|
|
|
3273 annotations = build_annotations (start, end);
|
|
|
3274 if (current_buffer != given_buffer)
|
|
|
3275 {
|
|
|
3276 start1 = BUF_BEGV (current_buffer);
|
|
|
3277 end1 = BUF_ZV (current_buffer);
|
|
|
3278 }
|
|
|
3279
|
|
|
3280 fn = filename;
|
|
|
3281 desc = -1;
|
|
|
3282 if (!NILP (append))
|
|
|
3283 {
|
|
771
|
3284 desc = qxe_open (XSTRING_DATA (fn), O_WRONLY | OPEN_BINARY, 0);
|
|
428
|
3285 }
|
|
|
3286 if (desc < 0)
|
|
|
3287 {
|
|
771
|
3288 desc = qxe_open (XSTRING_DATA (fn),
|
|
|
3289 O_WRONLY | O_TRUNC | O_CREAT | OPEN_BINARY,
|
|
|
3290 auto_saving ? auto_save_mode_bits : CREAT_MODE);
|
|
428
|
3291 }
|
|
|
3292
|
|
|
3293 if (desc < 0)
|
|
|
3294 {
|
|
|
3295 #ifdef CLASH_DETECTION
|
|
|
3296 save_errno = errno;
|
|
|
3297 if (!auto_saving) unlock_file (lockname);
|
|
|
3298 errno = save_errno;
|
|
|
3299 #endif /* CLASH_DETECTION */
|
|
563
|
3300 report_file_error ("Opening output file", filename);
|
|
428
|
3301 }
|
|
|
3302
|
|
|
3303 {
|
|
|
3304 Lisp_Object desc_locative = Fcons (make_int (desc), Qnil);
|
|
|
3305 Lisp_Object instream = Qnil, outstream = Qnil;
|
|
442
|
3306 struct gcpro nngcpro1, nngcpro2;
|
|
771
|
3307 /* need to gcpro; QUIT could happen out of call to retry_write() */
|
|
442
|
3308 NNGCPRO2 (instream, outstream);
|
|
428
|
3309
|
|
|
3310 record_unwind_protect (close_file_unwind, desc_locative);
|
|
|
3311
|
|
|
3312 if (!NILP (append))
|
|
|
3313 {
|
|
|
3314 if (lseek (desc, 0, 2) < 0)
|
|
|
3315 {
|
|
|
3316 #ifdef CLASH_DETECTION
|
|
|
3317 if (!auto_saving) unlock_file (lockname);
|
|
|
3318 #endif /* CLASH_DETECTION */
|
|
|
3319 report_file_error ("Lseek error",
|
|
563
|
3320 filename);
|
|
428
|
3321 }
|
|
|
3322 }
|
|
|
3323
|
|
|
3324 failure = 0;
|
|
|
3325
|
|
|
3326 /* Note: I tried increasing the buffering size, along with
|
|
|
3327 various other tricks, but nothing seemed to make much of
|
|
|
3328 a difference in the time it took to save a large file.
|
|
|
3329 (Actually that's not true. With a local disk, changing
|
|
|
3330 the buffer size doesn't seem to make much difference.
|
|
|
3331 With an NFS-mounted disk, it could make a lot of difference
|
|
|
3332 because you're affecting the number of network requests
|
|
|
3333 that need to be made, and there could be a large latency
|
|
|
3334 for each request. So I've increased the buffer size
|
|
|
3335 to 64K.) */
|
|
|
3336 outstream = make_filedesc_output_stream (desc, 0, -1, 0);
|
|
|
3337 Lstream_set_buffering (XLSTREAM (outstream),
|
|
|
3338 LSTREAM_BLOCKN_BUFFERED, 65536);
|
|
|
3339 outstream =
|
|
771
|
3340 make_coding_output_stream (XLSTREAM (outstream), codesys, CODING_ENCODE);
|
|
428
|
3341 Lstream_set_buffering (XLSTREAM (outstream),
|
|
|
3342 LSTREAM_BLOCKN_BUFFERED, 65536);
|
|
|
3343 if (STRINGP (start))
|
|
|
3344 {
|
|
|
3345 instream = make_lisp_string_input_stream (start, 0, -1);
|
|
|
3346 start1 = 0;
|
|
|
3347 }
|
|
|
3348 else
|
|
|
3349 instream = make_lisp_buffer_input_stream (current_buffer, start1, end1,
|
|
|
3350 LSTR_SELECTIVE |
|
|
|
3351 LSTR_IGNORE_ACCESSIBLE);
|
|
|
3352 failure = (0 > (a_write (outstream, instream, start1,
|
|
|
3353 &annotations)));
|
|
|
3354 save_errno = errno;
|
|
|
3355 /* Note that this doesn't close the desc since we created the
|
|
|
3356 stream without the LSTR_CLOSING flag, but it does
|
|
|
3357 flush out any buffered data. */
|
|
|
3358 if (Lstream_close (XLSTREAM (outstream)) < 0)
|
|
|
3359 {
|
|
|
3360 failure = 1;
|
|
|
3361 save_errno = errno;
|
|
|
3362 }
|
|
|
3363 Lstream_close (XLSTREAM (instream));
|
|
|
3364
|
|
|
3365 #ifdef HAVE_FSYNC
|
|
|
3366 /* Note fsync appears to change the modtime on BSD4.2 (both vax and sun).
|
|
|
3367 Disk full in NFS may be reported here. */
|
|
|
3368 /* mib says that closing the file will try to write as fast as NFS can do
|
|
|
3369 it, and that means the fsync here is not crucial for autosave files. */
|
|
|
3370 if (!auto_saving && fsync (desc) < 0
|
|
|
3371 /* If fsync fails with EINTR, don't treat that as serious. */
|
|
|
3372 && errno != EINTR)
|
|
|
3373 {
|
|
|
3374 failure = 1;
|
|
|
3375 save_errno = errno;
|
|
|
3376 }
|
|
|
3377 #endif /* HAVE_FSYNC */
|
|
|
3378
|
|
440
|
3379 /* Spurious "file has changed on disk" warnings used to be seen on
|
|
|
3380 systems where close() can change the modtime. This is known to
|
|
|
3381 happen on various NFS file systems, on Windows, and on Linux.
|
|
|
3382 Rather than handling this on a per-system basis, we
|
|
771
|
3383 unconditionally do the qxe_stat() after the retry_close(). */
|
|
428
|
3384
|
|
|
3385 /* NFS can report a write failure now. */
|
|
771
|
3386 if (retry_close (desc) < 0)
|
|
428
|
3387 {
|
|
|
3388 failure = 1;
|
|
|
3389 save_errno = errno;
|
|
|
3390 }
|
|
|
3391
|
|
|
3392 /* Discard the close unwind-protect. Execute the one for
|
|
|
3393 build_annotations (switches back to the original current buffer
|
|
|
3394 as necessary). */
|
|
|
3395 XCAR (desc_locative) = Qnil;
|
|
771
|
3396 unbind_to (speccount);
|
|
442
|
3397
|
|
|
3398 NNUNGCPRO;
|
|
428
|
3399 }
|
|
|
3400
|
|
771
|
3401 qxe_stat (XSTRING_DATA (fn), &st);
|
|
428
|
3402
|
|
|
3403 #ifdef CLASH_DETECTION
|
|
|
3404 if (!auto_saving)
|
|
|
3405 unlock_file (lockname);
|
|
|
3406 #endif /* CLASH_DETECTION */
|
|
|
3407
|
|
|
3408 /* Do this before reporting IO error
|
|
|
3409 to avoid a "file has changed on disk" warning on
|
|
|
3410 next attempt to save. */
|
|
|
3411 if (visiting)
|
|
|
3412 current_buffer->modtime = st.st_mtime;
|
|
|
3413
|
|
|
3414 if (failure)
|
|
442
|
3415 {
|
|
|
3416 errno = save_errno;
|
|
563
|
3417 report_file_error ("Writing file", fn);
|
|
442
|
3418 }
|
|
428
|
3419
|
|
|
3420 if (visiting)
|
|
|
3421 {
|
|
|
3422 BUF_SAVE_MODIFF (current_buffer) = BUF_MODIFF (current_buffer);
|
|
|
3423 current_buffer->saved_size = make_int (BUF_SIZE (current_buffer));
|
|
|
3424 current_buffer->filename = visit_file;
|
|
|
3425 MARK_MODELINE_CHANGED;
|
|
|
3426 }
|
|
|
3427 else if (quietly)
|
|
|
3428 {
|
|
442
|
3429 NUNGCPRO;
|
|
|
3430 UNGCPRO;
|
|
428
|
3431 return Qnil;
|
|
|
3432 }
|
|
|
3433
|
|
|
3434 if (!auto_saving)
|
|
|
3435 {
|
|
|
3436 if (visiting_other)
|
|
|
3437 message ("Wrote %s", XSTRING_DATA (visit_file));
|
|
|
3438 else
|
|
|
3439 {
|
|
446
|
3440 Lisp_Object fsp = Qnil;
|
|
442
|
3441 struct gcpro nngcpro1;
|
|
|
3442
|
|
|
3443 NNGCPRO1 (fsp);
|
|
428
|
3444 fsp = Ffile_symlink_p (fn);
|
|
|
3445 if (NILP (fsp))
|
|
|
3446 message ("Wrote %s", XSTRING_DATA (fn));
|
|
|
3447 else
|
|
|
3448 message ("Wrote %s (symlink to %s)",
|
|
|
3449 XSTRING_DATA (fn), XSTRING_DATA (fsp));
|
|
442
|
3450 NNUNGCPRO;
|
|
428
|
3451 }
|
|
|
3452 }
|
|
442
|
3453 NUNGCPRO;
|
|
|
3454 UNGCPRO;
|
|
428
|
3455 return Qnil;
|
|
|
3456 }
|
|
|
3457
|
|
|
3458 /* #### This is such a load of shit!!!! There is no way we should define
|
|
|
3459 something so stupid as a subr, just sort the fucking list more
|
|
|
3460 intelligently. */
|
|
|
3461 DEFUN ("car-less-than-car", Fcar_less_than_car, 2, 2, 0, /*
|
|
|
3462 Return t if (car A) is numerically less than (car B).
|
|
|
3463 */
|
|
|
3464 (a, b))
|
|
|
3465 {
|
|
|
3466 Lisp_Object objs[2];
|
|
|
3467 objs[0] = Fcar (a);
|
|
|
3468 objs[1] = Fcar (b);
|
|
|
3469 return Flss (2, objs);
|
|
|
3470 }
|
|
|
3471
|
|
|
3472 /* Heh heh heh, let's define this too, just to aggravate the person who
|
|
|
3473 wrote the above comment. */
|
|
|
3474 DEFUN ("cdr-less-than-cdr", Fcdr_less_than_cdr, 2, 2, 0, /*
|
|
|
3475 Return t if (cdr A) is numerically less than (cdr B).
|
|
|
3476 */
|
|
|
3477 (a, b))
|
|
|
3478 {
|
|
|
3479 Lisp_Object objs[2];
|
|
|
3480 objs[0] = Fcdr (a);
|
|
|
3481 objs[1] = Fcdr (b);
|
|
|
3482 return Flss (2, objs);
|
|
|
3483 }
|
|
|
3484
|
|
|
3485 /* Build the complete list of annotations appropriate for writing out
|
|
|
3486 the text between START and END, by calling all the functions in
|
|
|
3487 write-region-annotate-functions and merging the lists they return.
|
|
|
3488 If one of these functions switches to a different buffer, we assume
|
|
|
3489 that buffer contains altered text. Therefore, the caller must
|
|
|
3490 make sure to restore the current buffer in all cases,
|
|
|
3491 as save-excursion would do. */
|
|
|
3492
|
|
|
3493 static Lisp_Object
|
|
|
3494 build_annotations (Lisp_Object start, Lisp_Object end)
|
|
|
3495 {
|
|
|
3496 /* This function can GC */
|
|
|
3497 Lisp_Object annotations;
|
|
|
3498 Lisp_Object p, res;
|
|
|
3499 struct gcpro gcpro1, gcpro2;
|
|
793
|
3500 Lisp_Object original_buffer = wrap_buffer (current_buffer);
|
|
|
3501
|
|
428
|
3502
|
|
|
3503 annotations = Qnil;
|
|
|
3504 p = Vwrite_region_annotate_functions;
|
|
|
3505 GCPRO2 (annotations, p);
|
|
|
3506 while (!NILP (p))
|
|
|
3507 {
|
|
|
3508 struct buffer *given_buffer = current_buffer;
|
|
|
3509 Vwrite_region_annotations_so_far = annotations;
|
|
|
3510 res = call2 (Fcar (p), start, end);
|
|
|
3511 /* If the function makes a different buffer current,
|
|
|
3512 assume that means this buffer contains altered text to be output.
|
|
|
3513 Reset START and END from the buffer bounds
|
|
|
3514 and discard all previous annotations because they should have
|
|
|
3515 been dealt with by this function. */
|
|
|
3516 if (current_buffer != given_buffer)
|
|
|
3517 {
|
|
|
3518 start = make_int (BUF_BEGV (current_buffer));
|
|
|
3519 end = make_int (BUF_ZV (current_buffer));
|
|
|
3520 annotations = Qnil;
|
|
|
3521 }
|
|
|
3522 Flength (res); /* Check basic validity of return value */
|
|
|
3523 annotations = merge (annotations, res, Qcar_less_than_car);
|
|
|
3524 p = Fcdr (p);
|
|
|
3525 }
|
|
|
3526
|
|
|
3527 /* Now do the same for annotation functions implied by the file-format */
|
|
|
3528 if (auto_saving && (!EQ (Vauto_save_file_format, Qt)))
|
|
|
3529 p = Vauto_save_file_format;
|
|
|
3530 else
|
|
|
3531 p = current_buffer->file_format;
|
|
|
3532 while (!NILP (p))
|
|
|
3533 {
|
|
|
3534 struct buffer *given_buffer = current_buffer;
|
|
|
3535 Vwrite_region_annotations_so_far = annotations;
|
|
|
3536 res = call4 (Qformat_annotate_function, Fcar (p), start, end,
|
|
|
3537 original_buffer);
|
|
|
3538 if (current_buffer != given_buffer)
|
|
|
3539 {
|
|
|
3540 start = make_int (BUF_BEGV (current_buffer));
|
|
|
3541 end = make_int (BUF_ZV (current_buffer));
|
|
|
3542 annotations = Qnil;
|
|
|
3543 }
|
|
|
3544 Flength (res);
|
|
|
3545 annotations = merge (annotations, res, Qcar_less_than_car);
|
|
|
3546 p = Fcdr (p);
|
|
|
3547 }
|
|
|
3548 UNGCPRO;
|
|
|
3549 return annotations;
|
|
|
3550 }
|
|
|
3551
|
|
|
3552 /* Write to stream OUTSTREAM the characters from INSTREAM (it is read until
|
|
|
3553 EOF is encountered), assuming they start at position POS in the buffer
|
|
|
3554 of string that STREAM refers to. Intersperse with them the annotations
|
|
|
3555 from *ANNOT that fall into the range of positions we are reading from,
|
|
|
3556 each at its appropriate position.
|
|
|
3557
|
|
|
3558 Modify *ANNOT by discarding elements as we output them.
|
|
|
3559 The return value is negative in case of system call failure. */
|
|
|
3560
|
|
|
3561 /* 4K should probably be fine. We just need to reduce the number of
|
|
|
3562 function calls to reasonable level. The Lstream stuff itself will
|
|
|
3563 batch to 64K to reduce the number of system calls. */
|
|
|
3564
|
|
|
3565 #define A_WRITE_BATCH_SIZE 4096
|
|
|
3566
|
|
|
3567 static int
|
|
|
3568 a_write (Lisp_Object outstream, Lisp_Object instream, int pos,
|
|
|
3569 Lisp_Object *annot)
|
|
|
3570 {
|
|
|
3571 Lisp_Object tem;
|
|
|
3572 int nextpos;
|
|
|
3573 unsigned char largebuf[A_WRITE_BATCH_SIZE];
|
|
|
3574 Lstream *instr = XLSTREAM (instream);
|
|
|
3575 Lstream *outstr = XLSTREAM (outstream);
|
|
|
3576
|
|
|
3577 while (LISTP (*annot))
|
|
|
3578 {
|
|
|
3579 tem = Fcar_safe (Fcar (*annot));
|
|
|
3580 if (INTP (tem))
|
|
|
3581 nextpos = XINT (tem);
|
|
|
3582 else
|
|
|
3583 nextpos = INT_MAX;
|
|
|
3584 #ifdef MULE
|
|
|
3585 /* If there are annotations left and we have Mule, then we
|
|
|
3586 have to do the I/O one emchar at a time so we can
|
|
|
3587 determine when to insert the annotation. */
|
|
|
3588 if (!NILP (*annot))
|
|
|
3589 {
|
|
|
3590 Emchar ch;
|
|
|
3591 while (pos != nextpos && (ch = Lstream_get_emchar (instr)) != EOF)
|
|
|
3592 {
|
|
|
3593 if (Lstream_put_emchar (outstr, ch) < 0)
|
|
|
3594 return -1;
|
|
|
3595 pos++;
|
|
|
3596 }
|
|
|
3597 }
|
|
|
3598 else
|
|
|
3599 #endif /* MULE */
|
|
|
3600 {
|
|
|
3601 while (pos != nextpos)
|
|
|
3602 {
|
|
|
3603 /* Otherwise there is no point to that. Just go in batches. */
|
|
|
3604 int chunk = min (nextpos - pos, A_WRITE_BATCH_SIZE);
|
|
|
3605
|
|
|
3606 chunk = Lstream_read (instr, largebuf, chunk);
|
|
|
3607 if (chunk < 0)
|
|
|
3608 return -1;
|
|
|
3609 if (chunk == 0) /* EOF */
|
|
|
3610 break;
|
|
771
|
3611 if (Lstream_write (outstr, largebuf, chunk) < 0)
|
|
428
|
3612 return -1;
|
|
|
3613 pos += chunk;
|
|
|
3614 }
|
|
|
3615 }
|
|
|
3616 if (pos == nextpos)
|
|
|
3617 {
|
|
|
3618 tem = Fcdr (Fcar (*annot));
|
|
|
3619 if (STRINGP (tem))
|
|
|
3620 {
|
|
|
3621 if (Lstream_write (outstr, XSTRING_DATA (tem),
|
|
|
3622 XSTRING_LENGTH (tem)) < 0)
|
|
|
3623 return -1;
|
|
|
3624 }
|
|
|
3625 *annot = Fcdr (*annot);
|
|
|
3626 }
|
|
|
3627 else
|
|
|
3628 return 0;
|
|
|
3629 }
|
|
|
3630 return -1;
|
|
|
3631 }
|
|
|
3632
|
|
|
3633
|
|
|
3634
|
|
|
3635 #if 0
|
|
|
3636 #include <des_crypt.h>
|
|
|
3637
|
|
|
3638 #define CRYPT_BLOCK_SIZE 8 /* bytes */
|
|
|
3639 #define CRYPT_KEY_SIZE 8 /* bytes */
|
|
|
3640
|
|
|
3641 DEFUN ("encrypt-string", Fencrypt_string, 2, 2, 0, /*
|
|
|
3642 Encrypt STRING using KEY.
|
|
|
3643 */
|
|
|
3644 (string, key))
|
|
|
3645 {
|
|
|
3646 char *encrypted_string, *raw_key;
|
|
|
3647 int rounded_size, extra, key_size;
|
|
|
3648
|
|
|
3649 /* !!#### May produce bogus data under Mule. */
|
|
|
3650 CHECK_STRING (string);
|
|
|
3651 CHECK_STRING (key);
|
|
|
3652
|
|
|
3653 extra = XSTRING_LENGTH (string) % CRYPT_BLOCK_SIZE;
|
|
|
3654 rounded_size = XSTRING_LENGTH (string) + extra;
|
|
|
3655 encrypted_string = alloca (rounded_size + 1);
|
|
|
3656 memcpy (encrypted_string, XSTRING_DATA (string), XSTRING_LENGTH (string));
|
|
|
3657 memset (encrypted_string + rounded_size - extra, 0, extra + 1);
|
|
|
3658
|
|
|
3659 key_size = min (CRYPT_KEY_SIZE, XSTRING_LENGTH (key))
|
|
|
3660
|
|
|
3661 raw_key = alloca (CRYPT_KEY_SIZE + 1);
|
|
|
3662 memcpy (raw_key, XSTRING_DATA (key), key_size);
|
|
|
3663 memset (raw_key + key_size, 0, (CRYPT_KEY_SIZE + 1) - key_size);
|
|
|
3664
|
|
|
3665 ecb_crypt (raw_key, encrypted_string, rounded_size,
|
|
|
3666 DES_ENCRYPT | DES_SW);
|
|
|
3667 return make_string (encrypted_string, rounded_size);
|
|
|
3668 }
|
|
|
3669
|
|
|
3670 DEFUN ("decrypt-string", Fdecrypt_string, 2, 2, 0, /*
|
|
|
3671 Decrypt STRING using KEY.
|
|
|
3672 */
|
|
|
3673 (string, key))
|
|
|
3674 {
|
|
771
|
3675 /* !!#### May produce bogus data under Mule. */
|
|
428
|
3676 char *decrypted_string, *raw_key;
|
|
|
3677 int string_size, key_size;
|
|
|
3678
|
|
|
3679 CHECK_STRING (string);
|
|
|
3680 CHECK_STRING (key);
|
|
|
3681
|
|
|
3682 string_size = XSTRING_LENGTH (string) + 1;
|
|
|
3683 decrypted_string = alloca (string_size);
|
|
|
3684 memcpy (decrypted_string, XSTRING_DATA (string), string_size);
|
|
|
3685 decrypted_string[string_size - 1] = '\0';
|
|
|
3686
|
|
|
3687 key_size = min (CRYPT_KEY_SIZE, XSTRING_LENGTH (key))
|
|
|
3688
|
|
|
3689 raw_key = alloca (CRYPT_KEY_SIZE + 1);
|
|
|
3690 memcpy (raw_key, XSTRING_DATA (key), key_size);
|
|
|
3691 memset (raw_key + key_size, 0, (CRYPT_KEY_SIZE + 1) - key_size);
|
|
|
3692
|
|
|
3693
|
|
|
3694 ecb_crypt (raw_key, decrypted_string, string_size, D | DES_SW);
|
|
|
3695 return make_string (decrypted_string, string_size - 1);
|
|
|
3696 }
|
|
|
3697 #endif /* 0 */
|
|
|
3698
|
|
|
3699
|
|
|
3700 DEFUN ("verify-visited-file-modtime", Fverify_visited_file_modtime, 1, 1, 0, /*
|
|
444
|
3701 Return t if last mod time of BUFFER's visited file matches what BUFFER records.
|
|
428
|
3702 This means that the file has not been changed since it was visited or saved.
|
|
|
3703 */
|
|
444
|
3704 (buffer))
|
|
428
|
3705 {
|
|
442
|
3706 /* This function can call lisp; GC checked 2000-07-11 ben */
|
|
428
|
3707 struct buffer *b;
|
|
|
3708 struct stat st;
|
|
|
3709 Lisp_Object handler;
|
|
|
3710
|
|
444
|
3711 CHECK_BUFFER (buffer);
|
|
|
3712 b = XBUFFER (buffer);
|
|
428
|
3713
|
|
|
3714 if (!STRINGP (b->filename)) return Qt;
|
|
|
3715 if (b->modtime == 0) return Qt;
|
|
|
3716
|
|
|
3717 /* If the file name has special constructs in it,
|
|
|
3718 call the corresponding file handler. */
|
|
|
3719 handler = Ffind_file_name_handler (b->filename,
|
|
|
3720 Qverify_visited_file_modtime);
|
|
|
3721 if (!NILP (handler))
|
|
444
|
3722 return call2 (handler, Qverify_visited_file_modtime, buffer);
|
|
428
|
3723
|
|
771
|
3724 if (qxe_stat (XSTRING_DATA (b->filename), &st) < 0)
|
|
428
|
3725 {
|
|
|
3726 /* If the file doesn't exist now and didn't exist before,
|
|
|
3727 we say that it isn't modified, provided the error is a tame one. */
|
|
|
3728 if (errno == ENOENT || errno == EACCES || errno == ENOTDIR)
|
|
|
3729 st.st_mtime = -1;
|
|
|
3730 else
|
|
|
3731 st.st_mtime = 0;
|
|
|
3732 }
|
|
|
3733 if (st.st_mtime == b->modtime
|
|
|
3734 /* If both are positive, accept them if they are off by one second. */
|
|
|
3735 || (st.st_mtime > 0 && b->modtime > 0
|
|
|
3736 && (st.st_mtime == b->modtime + 1
|
|
|
3737 || st.st_mtime == b->modtime - 1)))
|
|
|
3738 return Qt;
|
|
|
3739 return Qnil;
|
|
|
3740 }
|
|
|
3741
|
|
|
3742 DEFUN ("clear-visited-file-modtime", Fclear_visited_file_modtime, 0, 0, 0, /*
|
|
|
3743 Clear out records of last mod time of visited file.
|
|
|
3744 Next attempt to save will certainly not complain of a discrepancy.
|
|
|
3745 */
|
|
|
3746 ())
|
|
|
3747 {
|
|
|
3748 current_buffer->modtime = 0;
|
|
|
3749 return Qnil;
|
|
|
3750 }
|
|
|
3751
|
|
|
3752 DEFUN ("visited-file-modtime", Fvisited_file_modtime, 0, 0, 0, /*
|
|
|
3753 Return the current buffer's recorded visited file modification time.
|
|
|
3754 The value is a list of the form (HIGH . LOW), like the time values
|
|
|
3755 that `file-attributes' returns.
|
|
|
3756 */
|
|
|
3757 ())
|
|
|
3758 {
|
|
|
3759 return time_to_lisp ((time_t) current_buffer->modtime);
|
|
|
3760 }
|
|
|
3761
|
|
|
3762 DEFUN ("set-visited-file-modtime", Fset_visited_file_modtime, 0, 1, 0, /*
|
|
|
3763 Update buffer's recorded modification time from the visited file's time.
|
|
|
3764 Useful if the buffer was not read from the file normally
|
|
|
3765 or if the file itself has been changed for some known benign reason.
|
|
|
3766 An argument specifies the modification time value to use
|
|
|
3767 \(instead of that of the visited file), in the form of a list
|
|
|
3768 \(HIGH . LOW) or (HIGH LOW).
|
|
|
3769 */
|
|
|
3770 (time_list))
|
|
|
3771 {
|
|
|
3772 /* This function can call lisp */
|
|
|
3773 if (!NILP (time_list))
|
|
|
3774 {
|
|
|
3775 time_t the_time;
|
|
|
3776 lisp_to_time (time_list, &the_time);
|
|
|
3777 current_buffer->modtime = (int) the_time;
|
|
|
3778 }
|
|
|
3779 else
|
|
|
3780 {
|
|
446
|
3781 Lisp_Object filename = Qnil;
|
|
428
|
3782 struct stat st;
|
|
|
3783 Lisp_Object handler;
|
|
|
3784 struct gcpro gcpro1, gcpro2, gcpro3;
|
|
|
3785
|
|
|
3786 GCPRO3 (filename, time_list, current_buffer->filename);
|
|
|
3787 filename = Fexpand_file_name (current_buffer->filename, Qnil);
|
|
|
3788
|
|
|
3789 /* If the file name has special constructs in it,
|
|
|
3790 call the corresponding file handler. */
|
|
|
3791 handler = Ffind_file_name_handler (filename, Qset_visited_file_modtime);
|
|
|
3792 UNGCPRO;
|
|
|
3793 if (!NILP (handler))
|
|
|
3794 /* The handler can find the file name the same way we did. */
|
|
|
3795 return call2 (handler, Qset_visited_file_modtime, Qnil);
|
|
771
|
3796 else if (qxe_stat (XSTRING_DATA (filename), &st) >= 0)
|
|
428
|
3797 current_buffer->modtime = st.st_mtime;
|
|
|
3798 }
|
|
|
3799
|
|
|
3800 return Qnil;
|
|
|
3801 }
|
|
|
3802
|
|
|
3803 static Lisp_Object
|
|
|
3804 auto_save_error (Lisp_Object condition_object, Lisp_Object ignored)
|
|
|
3805 {
|
|
|
3806 /* This function can call lisp */
|
|
|
3807 if (gc_in_progress)
|
|
|
3808 return Qnil;
|
|
|
3809 /* Don't try printing an error message after everything is gone! */
|
|
|
3810 if (preparing_for_armageddon)
|
|
|
3811 return Qnil;
|
|
|
3812 clear_echo_area (selected_frame (), Qauto_saving, 1);
|
|
|
3813 Fding (Qt, Qauto_save_error, Qnil);
|
|
|
3814 message ("Auto-saving...error for %s", XSTRING_DATA (current_buffer->name));
|
|
|
3815 Fsleep_for (make_int (1));
|
|
|
3816 message ("Auto-saving...error!for %s", XSTRING_DATA (current_buffer->name));
|
|
|
3817 Fsleep_for (make_int (1));
|
|
|
3818 message ("Auto-saving...error for %s", XSTRING_DATA (current_buffer->name));
|
|
|
3819 Fsleep_for (make_int (1));
|
|
|
3820 return Qnil;
|
|
|
3821 }
|
|
|
3822
|
|
|
3823 static Lisp_Object
|
|
|
3824 auto_save_1 (Lisp_Object ignored)
|
|
|
3825 {
|
|
|
3826 /* This function can call lisp */
|
|
|
3827 /* #### I think caller is protecting current_buffer? */
|
|
|
3828 struct stat st;
|
|
|
3829 Lisp_Object fn = current_buffer->filename;
|
|
|
3830 Lisp_Object a = current_buffer->auto_save_file_name;
|
|
|
3831
|
|
|
3832 if (!STRINGP (a))
|
|
|
3833 return (Qnil);
|
|
|
3834
|
|
|
3835 /* Get visited file's mode to become the auto save file's mode. */
|
|
|
3836 if (STRINGP (fn) &&
|
|
771
|
3837 qxe_stat (XSTRING_DATA (fn), &st) >= 0)
|
|
428
|
3838 /* But make sure we can overwrite it later! */
|
|
|
3839 auto_save_mode_bits = st.st_mode | 0600;
|
|
|
3840 else
|
|
|
3841 /* default mode for auto-save files of buffers with no file is
|
|
|
3842 readable by owner only. This may annoy some small number of
|
|
|
3843 people, but the alternative removes all privacy from email. */
|
|
|
3844 auto_save_mode_bits = 0600;
|
|
|
3845
|
|
|
3846 return
|
|
|
3847 Fwrite_region_internal (Qnil, Qnil, a, Qnil, Qlambda, Qnil,
|
|
771
|
3848 #if 1 /* #### Kyle wants it changed to not use escape-quoted. Think
|
|
|
3849 carefully about how this works. */
|
|
|
3850 Qescape_quoted
|
|
|
3851 #else
|
|
707
|
3852 current_buffer->buffer_file_coding_system
|
|
428
|
3853 #endif
|
|
|
3854 );
|
|
|
3855 }
|
|
|
3856
|
|
|
3857 static Lisp_Object
|
|
|
3858 auto_save_expand_name_error (Lisp_Object condition_object, Lisp_Object ignored)
|
|
|
3859 {
|
|
771
|
3860 warn_when_safe_lispobj
|
|
793
|
3861 (Qfile, Qerror,
|
|
771
|
3862 Fcons (build_msg_string ("Invalid auto-save list-file"),
|
|
|
3863 Fcons (Vauto_save_list_file_name,
|
|
|
3864 condition_object)));
|
|
428
|
3865 return Qnil;
|
|
|
3866 }
|
|
|
3867
|
|
|
3868 static Lisp_Object
|
|
|
3869 auto_save_expand_name (Lisp_Object name)
|
|
|
3870 {
|
|
|
3871 struct gcpro gcpro1;
|
|
|
3872
|
|
|
3873 /* note that caller did NOT gc protect name, so we do it. */
|
|
771
|
3874 /* [[dmoore - this might not be necessary, if condition_case_1
|
|
|
3875 protects it. but I don't think it does.]] indeed it doesn't. --ben */
|
|
428
|
3876 GCPRO1 (name);
|
|
|
3877 RETURN_UNGCPRO (Fexpand_file_name (name, Qnil));
|
|
|
3878 }
|
|
|
3879
|
|
|
3880
|
|
|
3881 static Lisp_Object
|
|
|
3882 do_auto_save_unwind (Lisp_Object fd)
|
|
|
3883 {
|
|
771
|
3884 retry_close (XINT (fd));
|
|
428
|
3885 return (fd);
|
|
|
3886 }
|
|
|
3887
|
|
|
3888 static Lisp_Object
|
|
|
3889 do_auto_save_unwind_2 (Lisp_Object old_auto_saving)
|
|
|
3890 {
|
|
|
3891 auto_saving = XINT (old_auto_saving);
|
|
|
3892 return Qnil;
|
|
|
3893 }
|
|
|
3894
|
|
|
3895 /* Fdo_auto_save() checks whether a GC is in progress when it is called,
|
|
|
3896 and if so, tries to avoid touching lisp objects.
|
|
|
3897
|
|
|
3898 The only time that Fdo_auto_save() is called while GC is in progress
|
|
|
3899 is if we're going down, as a result of an abort() or a kill signal.
|
|
|
3900 It's fairly important that we generate autosave files in that case!
|
|
|
3901 */
|
|
|
3902
|
|
|
3903 DEFUN ("do-auto-save", Fdo_auto_save, 0, 2, "", /*
|
|
|
3904 Auto-save all buffers that need it.
|
|
|
3905 This is all buffers that have auto-saving enabled
|
|
|
3906 and are changed since last auto-saved.
|
|
|
3907 Auto-saving writes the buffer into a file
|
|
|
3908 so that your editing is not lost if the system crashes.
|
|
|
3909 This file is not the file you visited; that changes only when you save.
|
|
|
3910 Normally we run the normal hook `auto-save-hook' before saving.
|
|
|
3911
|
|
|
3912 Non-nil first argument means do not print any message if successful.
|
|
|
3913 Non-nil second argument means save only current buffer.
|
|
|
3914 */
|
|
|
3915 (no_message, current_only))
|
|
|
3916 {
|
|
|
3917 /* This function can call lisp */
|
|
|
3918 struct buffer *b;
|
|
|
3919 Lisp_Object tail, buf;
|
|
|
3920 int auto_saved = 0;
|
|
|
3921 int do_handled_files;
|
|
|
3922 Lisp_Object oquit = Qnil;
|
|
|
3923 Lisp_Object listfile = Qnil;
|
|
|
3924 Lisp_Object old;
|
|
|
3925 int listdesc = -1;
|
|
|
3926 int speccount = specpdl_depth ();
|
|
|
3927 struct gcpro gcpro1, gcpro2, gcpro3;
|
|
|
3928
|
|
793
|
3929 old = wrap_buffer (current_buffer);
|
|
428
|
3930 GCPRO3 (oquit, listfile, old);
|
|
|
3931 check_quit (); /* make Vquit_flag accurate */
|
|
|
3932 /* Ordinarily don't quit within this function,
|
|
|
3933 but don't make it impossible to quit (in case we get hung in I/O). */
|
|
|
3934 oquit = Vquit_flag;
|
|
|
3935 Vquit_flag = Qnil;
|
|
|
3936
|
|
|
3937 /* No further GCPRO needed, because (when it matters) all Lisp_Object
|
|
|
3938 variables point to non-strings reached from Vbuffer_alist. */
|
|
|
3939
|
|
|
3940 if (minibuf_level != 0 || preparing_for_armageddon)
|
|
|
3941 no_message = Qt;
|
|
|
3942
|
|
|
3943 run_hook (Qauto_save_hook);
|
|
|
3944
|
|
|
3945 if (STRINGP (Vauto_save_list_file_name))
|
|
|
3946 listfile = condition_case_1 (Qt,
|
|
|
3947 auto_save_expand_name,
|
|
|
3948 Vauto_save_list_file_name,
|
|
|
3949 auto_save_expand_name_error, Qnil);
|
|
|
3950
|
|
|
3951 /* Make sure auto_saving is reset. */
|
|
|
3952 record_unwind_protect (do_auto_save_unwind_2, make_int (auto_saving));
|
|
|
3953
|
|
|
3954 auto_saving = 1;
|
|
|
3955
|
|
|
3956 /* First, save all files which don't have handlers. If Emacs is
|
|
|
3957 crashing, the handlers may tweak what is causing Emacs to crash
|
|
|
3958 in the first place, and it would be a shame if Emacs failed to
|
|
|
3959 autosave perfectly ordinary files because it couldn't handle some
|
|
|
3960 ange-ftp'd file. */
|
|
|
3961 for (do_handled_files = 0; do_handled_files < 2; do_handled_files++)
|
|
|
3962 {
|
|
|
3963 for (tail = Vbuffer_alist;
|
|
|
3964 CONSP (tail);
|
|
|
3965 tail = XCDR (tail))
|
|
|
3966 {
|
|
|
3967 buf = XCDR (XCAR (tail));
|
|
|
3968 b = XBUFFER (buf);
|
|
|
3969
|
|
|
3970 if (!NILP (current_only)
|
|
|
3971 && b != current_buffer)
|
|
|
3972 continue;
|
|
|
3973
|
|
|
3974 /* Don't auto-save indirect buffers.
|
|
|
3975 The base buffer takes care of it. */
|
|
|
3976 if (b->base_buffer)
|
|
|
3977 continue;
|
|
|
3978
|
|
|
3979 /* Check for auto save enabled
|
|
|
3980 and file changed since last auto save
|
|
|
3981 and file changed since last real save. */
|
|
|
3982 if (STRINGP (b->auto_save_file_name)
|
|
|
3983 && BUF_SAVE_MODIFF (b) < BUF_MODIFF (b)
|
|
|
3984 && b->auto_save_modified < BUF_MODIFF (b)
|
|
|
3985 /* -1 means we've turned off autosaving for a while--see below. */
|
|
|
3986 && XINT (b->saved_size) >= 0
|
|
|
3987 && (do_handled_files
|
|
|
3988 || NILP (Ffind_file_name_handler (b->auto_save_file_name,
|
|
|
3989 Qwrite_region))))
|
|
|
3990 {
|
|
|
3991 EMACS_TIME before_time, after_time;
|
|
|
3992
|
|
|
3993 EMACS_GET_TIME (before_time);
|
|
|
3994 /* If we had a failure, don't try again for 20 minutes. */
|
|
|
3995 if (!preparing_for_armageddon
|
|
|
3996 && b->auto_save_failure_time >= 0
|
|
|
3997 && (EMACS_SECS (before_time) - b->auto_save_failure_time <
|
|
|
3998 1200))
|
|
|
3999 continue;
|
|
|
4000
|
|
|
4001 if (!preparing_for_armageddon &&
|
|
|
4002 (XINT (b->saved_size) * 10
|
|
|
4003 > (BUF_Z (b) - BUF_BEG (b)) * 13)
|
|
|
4004 /* A short file is likely to change a large fraction;
|
|
|
4005 spare the user annoying messages. */
|
|
|
4006 && XINT (b->saved_size) > 5000
|
|
|
4007 /* These messages are frequent and annoying for `*mail*'. */
|
|
|
4008 && !NILP (b->filename)
|
|
|
4009 && NILP (no_message)
|
|
|
4010 && disable_auto_save_when_buffer_shrinks)
|
|
|
4011 {
|
|
|
4012 /* It has shrunk too much; turn off auto-saving here.
|
|
|
4013 Unless we're about to crash, in which case auto-save it
|
|
|
4014 anyway.
|
|
|
4015 */
|
|
|
4016 message
|
|
|
4017 ("Buffer %s has shrunk a lot; auto save turned off there",
|
|
|
4018 XSTRING_DATA (b->name));
|
|
|
4019 /* Turn off auto-saving until there's a real save,
|
|
|
4020 and prevent any more warnings. */
|
|
|
4021 b->saved_size = make_int (-1);
|
|
|
4022 if (!gc_in_progress)
|
|
|
4023 Fsleep_for (make_int (1));
|
|
|
4024 continue;
|
|
|
4025 }
|
|
|
4026 set_buffer_internal (b);
|
|
|
4027 if (!auto_saved && NILP (no_message))
|
|
|
4028 {
|
|
442
|
4029 static const unsigned char *msg
|
|
|
4030 = (const unsigned char *) "Auto-saving...";
|
|
428
|
4031 echo_area_message (selected_frame (), msg, Qnil,
|
|
442
|
4032 0, strlen ((const char *) msg),
|
|
428
|
4033 Qauto_saving);
|
|
|
4034 }
|
|
|
4035
|
|
|
4036 /* Open the auto-save list file, if necessary.
|
|
|
4037 We only do this now so that the file only exists
|
|
|
4038 if we actually auto-saved any files. */
|
|
444
|
4039 if (!auto_saved && !inhibit_auto_save_session
|
|
|
4040 && !NILP (Vauto_save_list_file_prefix)
|
|
|
4041 && STRINGP (listfile) && listdesc < 0)
|
|
428
|
4042 {
|
|
771
|
4043 listdesc =
|
|
|
4044 qxe_open (XSTRING_DATA (listfile),
|
|
|
4045 O_WRONLY | O_TRUNC | O_CREAT | OPEN_BINARY,
|
|
|
4046 CREAT_MODE);
|
|
428
|
4047
|
|
|
4048 /* Arrange to close that file whether or not we get
|
|
|
4049 an error. */
|
|
|
4050 if (listdesc >= 0)
|
|
|
4051 record_unwind_protect (do_auto_save_unwind,
|
|
|
4052 make_int (listdesc));
|
|
|
4053 }
|
|
|
4054
|
|
|
4055 /* Record all the buffers that we are auto-saving in
|
|
|
4056 the special file that lists them. For each of
|
|
|
4057 these buffers, record visited name (if any) and
|
|
|
4058 auto save name. */
|
|
|
4059 if (listdesc >= 0)
|
|
|
4060 {
|
|
442
|
4061 const Extbyte *auto_save_file_name_ext;
|
|
665
|
4062 Bytecount auto_save_file_name_ext_len;
|
|
428
|
4063
|
|
440
|
4064 TO_EXTERNAL_FORMAT (LISP_STRING, b->auto_save_file_name,
|
|
|
4065 ALLOCA, (auto_save_file_name_ext,
|
|
|
4066 auto_save_file_name_ext_len),
|
|
771
|
4067 Qescape_quoted);
|
|
428
|
4068 if (!NILP (b->filename))
|
|
|
4069 {
|
|
442
|
4070 const Extbyte *filename_ext;
|
|
665
|
4071 Bytecount filename_ext_len;
|
|
428
|
4072
|
|
440
|
4073 TO_EXTERNAL_FORMAT (LISP_STRING, b->filename,
|
|
|
4074 ALLOCA, (filename_ext,
|
|
|
4075 filename_ext_len),
|
|
771
|
4076 Qescape_quoted);
|
|
|
4077 retry_write (listdesc, filename_ext, filename_ext_len);
|
|
428
|
4078 }
|
|
771
|
4079 retry_write (listdesc, "\n", 1);
|
|
|
4080 retry_write (listdesc, auto_save_file_name_ext,
|
|
428
|
4081 auto_save_file_name_ext_len);
|
|
771
|
4082 retry_write (listdesc, "\n", 1);
|
|
428
|
4083 }
|
|
|
4084
|
|
|
4085 /* dmoore - In a bad scenario we've set b=XBUFFER(buf)
|
|
|
4086 based on values in Vbuffer_alist. auto_save_1 may
|
|
|
4087 cause lisp handlers to run. Those handlers may kill
|
|
|
4088 the buffer and then GC. Since the buffer is killed,
|
|
|
4089 it's no longer in Vbuffer_alist so it might get reaped
|
|
|
4090 by the GC. We also need to protect tail. */
|
|
|
4091 /* #### There is probably a lot of other code which has
|
|
|
4092 pointers into buffers which may get blown away by
|
|
|
4093 handlers. */
|
|
|
4094 {
|
|
|
4095 struct gcpro ngcpro1, ngcpro2;
|
|
|
4096 NGCPRO2 (buf, tail);
|
|
|
4097 condition_case_1 (Qt,
|
|
|
4098 auto_save_1, Qnil,
|
|
|
4099 auto_save_error, Qnil);
|
|
|
4100 NUNGCPRO;
|
|
|
4101 }
|
|
|
4102 /* Handler killed our saved current-buffer! Pick any. */
|
|
|
4103 if (!BUFFER_LIVE_P (XBUFFER (old)))
|
|
793
|
4104 old = wrap_buffer (current_buffer);
|
|
428
|
4105
|
|
|
4106 set_buffer_internal (XBUFFER (old));
|
|
|
4107 auto_saved++;
|
|
|
4108
|
|
|
4109 /* Handler killed their own buffer! */
|
|
|
4110 if (!BUFFER_LIVE_P(b))
|
|
|
4111 continue;
|
|
|
4112
|
|
|
4113 b->auto_save_modified = BUF_MODIFF (b);
|
|
|
4114 b->saved_size = make_int (BUF_SIZE (b));
|
|
|
4115 EMACS_GET_TIME (after_time);
|
|
|
4116 /* If auto-save took more than 60 seconds,
|
|
|
4117 assume it was an NFS failure that got a timeout. */
|
|
|
4118 if (EMACS_SECS (after_time) - EMACS_SECS (before_time) > 60)
|
|
|
4119 b->auto_save_failure_time = EMACS_SECS (after_time);
|
|
|
4120 }
|
|
|
4121 }
|
|
|
4122 }
|
|
|
4123
|
|
|
4124 /* Prevent another auto save till enough input events come in. */
|
|
|
4125 if (auto_saved)
|
|
|
4126 record_auto_save ();
|
|
|
4127
|
|
|
4128 /* If we didn't save anything into the listfile, remove the old
|
|
|
4129 one because nothing needed to be auto-saved. Do this afterwards
|
|
|
4130 rather than before in case we get a crash attempting to autosave
|
|
|
4131 (in that case we'd still want the old one around). */
|
|
|
4132 if (listdesc < 0 && !auto_saved && STRINGP (listfile))
|
|
771
|
4133 qxe_unlink (XSTRING_DATA (listfile));
|
|
428
|
4134
|
|
|
4135 /* Show "...done" only if the echo area would otherwise be empty. */
|
|
|
4136 if (auto_saved && NILP (no_message)
|
|
|
4137 && NILP (clear_echo_area (selected_frame (), Qauto_saving, 0)))
|
|
|
4138 {
|
|
442
|
4139 static const unsigned char *msg
|
|
|
4140 = (const unsigned char *)"Auto-saving...done";
|
|
428
|
4141 echo_area_message (selected_frame (), msg, Qnil, 0,
|
|
442
|
4142 strlen ((const char *) msg), Qauto_saving);
|
|
428
|
4143 }
|
|
|
4144
|
|
|
4145 Vquit_flag = oquit;
|
|
|
4146
|
|
771
|
4147 RETURN_UNGCPRO (unbind_to (speccount));
|
|
428
|
4148 }
|
|
|
4149
|
|
|
4150 DEFUN ("set-buffer-auto-saved", Fset_buffer_auto_saved, 0, 0, 0, /*
|
|
|
4151 Mark current buffer as auto-saved with its current text.
|
|
|
4152 No auto-save file will be written until the buffer changes again.
|
|
|
4153 */
|
|
|
4154 ())
|
|
|
4155 {
|
|
|
4156 current_buffer->auto_save_modified = BUF_MODIFF (current_buffer);
|
|
|
4157 current_buffer->saved_size = make_int (BUF_SIZE (current_buffer));
|
|
|
4158 current_buffer->auto_save_failure_time = -1;
|
|
|
4159 return Qnil;
|
|
|
4160 }
|
|
|
4161
|
|
|
4162 DEFUN ("clear-buffer-auto-save-failure", Fclear_buffer_auto_save_failure, 0, 0, 0, /*
|
|
|
4163 Clear any record of a recent auto-save failure in the current buffer.
|
|
|
4164 */
|
|
|
4165 ())
|
|
|
4166 {
|
|
|
4167 current_buffer->auto_save_failure_time = -1;
|
|
|
4168 return Qnil;
|
|
|
4169 }
|
|
|
4170
|
|
|
4171 DEFUN ("recent-auto-save-p", Frecent_auto_save_p, 0, 0, 0, /*
|
|
|
4172 Return t if buffer has been auto-saved since last read in or saved.
|
|
|
4173 */
|
|
|
4174 ())
|
|
|
4175 {
|
|
|
4176 return (BUF_SAVE_MODIFF (current_buffer) <
|
|
|
4177 current_buffer->auto_save_modified) ? Qt : Qnil;
|
|
|
4178 }
|
|
|
4179
|
|
|
4180
|
|
|
4181 /************************************************************************/
|
|
|
4182 /* initialization */
|
|
|
4183 /************************************************************************/
|
|
|
4184
|
|
|
4185 void
|
|
|
4186 syms_of_fileio (void)
|
|
|
4187 {
|
|
563
|
4188 DEFSYMBOL (Qexpand_file_name);
|
|
|
4189 DEFSYMBOL (Qfile_truename);
|
|
|
4190 DEFSYMBOL (Qsubstitute_in_file_name);
|
|
|
4191 DEFSYMBOL (Qdirectory_file_name);
|
|
|
4192 DEFSYMBOL (Qfile_name_directory);
|
|
|
4193 DEFSYMBOL (Qfile_name_nondirectory);
|
|
|
4194 DEFSYMBOL (Qunhandled_file_name_directory);
|
|
|
4195 DEFSYMBOL (Qfile_name_as_directory);
|
|
|
4196 DEFSYMBOL (Qcopy_file);
|
|
|
4197 DEFSYMBOL (Qmake_directory_internal);
|
|
|
4198 DEFSYMBOL (Qdelete_directory);
|
|
|
4199 DEFSYMBOL (Qdelete_file);
|
|
|
4200 DEFSYMBOL (Qrename_file);
|
|
|
4201 DEFSYMBOL (Qadd_name_to_file);
|
|
|
4202 DEFSYMBOL (Qmake_symbolic_link);
|
|
|
4203 DEFSYMBOL (Qfile_exists_p);
|
|
|
4204 DEFSYMBOL (Qfile_executable_p);
|
|
|
4205 DEFSYMBOL (Qfile_readable_p);
|
|
|
4206 DEFSYMBOL (Qfile_symlink_p);
|
|
|
4207 DEFSYMBOL (Qfile_writable_p);
|
|
|
4208 DEFSYMBOL (Qfile_directory_p);
|
|
|
4209 DEFSYMBOL (Qfile_regular_p);
|
|
|
4210 DEFSYMBOL (Qfile_accessible_directory_p);
|
|
|
4211 DEFSYMBOL (Qfile_modes);
|
|
|
4212 DEFSYMBOL (Qset_file_modes);
|
|
|
4213 DEFSYMBOL (Qfile_newer_than_file_p);
|
|
|
4214 DEFSYMBOL (Qinsert_file_contents);
|
|
|
4215 DEFSYMBOL (Qwrite_region);
|
|
|
4216 DEFSYMBOL (Qverify_visited_file_modtime);
|
|
|
4217 DEFSYMBOL (Qset_visited_file_modtime);
|
|
|
4218 DEFSYMBOL (Qcar_less_than_car); /* Vomitous! */
|
|
|
4219
|
|
|
4220 DEFSYMBOL (Qauto_save_hook);
|
|
|
4221 DEFSYMBOL (Qauto_save_error);
|
|
|
4222 DEFSYMBOL (Qauto_saving);
|
|
|
4223
|
|
|
4224 DEFSYMBOL (Qformat_decode);
|
|
|
4225 DEFSYMBOL (Qformat_annotate_function);
|
|
|
4226
|
|
|
4227 DEFSYMBOL (Qcompute_buffer_file_truename);
|
|
|
4228
|
|
442
|
4229 DEFERROR_STANDARD (Qfile_already_exists, Qfile_error);
|
|
428
|
4230
|
|
|
4231 DEFSUBR (Ffind_file_name_handler);
|
|
|
4232
|
|
|
4233 DEFSUBR (Ffile_name_directory);
|
|
|
4234 DEFSUBR (Ffile_name_nondirectory);
|
|
|
4235 DEFSUBR (Funhandled_file_name_directory);
|
|
|
4236 DEFSUBR (Ffile_name_as_directory);
|
|
|
4237 DEFSUBR (Fdirectory_file_name);
|
|
|
4238 DEFSUBR (Fmake_temp_name);
|
|
|
4239 DEFSUBR (Fexpand_file_name);
|
|
|
4240 DEFSUBR (Ffile_truename);
|
|
|
4241 DEFSUBR (Fsubstitute_in_file_name);
|
|
|
4242 DEFSUBR (Fcopy_file);
|
|
|
4243 DEFSUBR (Fmake_directory_internal);
|
|
|
4244 DEFSUBR (Fdelete_directory);
|
|
|
4245 DEFSUBR (Fdelete_file);
|
|
|
4246 DEFSUBR (Frename_file);
|
|
|
4247 DEFSUBR (Fadd_name_to_file);
|
|
|
4248 DEFSUBR (Fmake_symbolic_link);
|
|
|
4249 #ifdef HPUX_NET
|
|
|
4250 DEFSUBR (Fsysnetunam);
|
|
|
4251 #endif /* HPUX_NET */
|
|
|
4252 DEFSUBR (Ffile_name_absolute_p);
|
|
|
4253 DEFSUBR (Ffile_exists_p);
|
|
|
4254 DEFSUBR (Ffile_executable_p);
|
|
|
4255 DEFSUBR (Ffile_readable_p);
|
|
|
4256 DEFSUBR (Ffile_writable_p);
|
|
|
4257 DEFSUBR (Ffile_symlink_p);
|
|
|
4258 DEFSUBR (Ffile_directory_p);
|
|
|
4259 DEFSUBR (Ffile_accessible_directory_p);
|
|
|
4260 DEFSUBR (Ffile_regular_p);
|
|
|
4261 DEFSUBR (Ffile_modes);
|
|
|
4262 DEFSUBR (Fset_file_modes);
|
|
|
4263 DEFSUBR (Fset_default_file_modes);
|
|
|
4264 DEFSUBR (Fdefault_file_modes);
|
|
|
4265 DEFSUBR (Funix_sync);
|
|
|
4266 DEFSUBR (Ffile_newer_than_file_p);
|
|
|
4267 DEFSUBR (Finsert_file_contents_internal);
|
|
|
4268 DEFSUBR (Fwrite_region_internal);
|
|
|
4269 DEFSUBR (Fcar_less_than_car); /* Vomitous! */
|
|
|
4270 DEFSUBR (Fcdr_less_than_cdr); /* Yeah oh yeah bucko .... */
|
|
|
4271 #if 0
|
|
|
4272 DEFSUBR (Fencrypt_string);
|
|
|
4273 DEFSUBR (Fdecrypt_string);
|
|
|
4274 #endif
|
|
|
4275 DEFSUBR (Fverify_visited_file_modtime);
|
|
|
4276 DEFSUBR (Fclear_visited_file_modtime);
|
|
|
4277 DEFSUBR (Fvisited_file_modtime);
|
|
|
4278 DEFSUBR (Fset_visited_file_modtime);
|
|
|
4279
|
|
|
4280 DEFSUBR (Fdo_auto_save);
|
|
|
4281 DEFSUBR (Fset_buffer_auto_saved);
|
|
|
4282 DEFSUBR (Fclear_buffer_auto_save_failure);
|
|
|
4283 DEFSUBR (Frecent_auto_save_p);
|
|
|
4284 }
|
|
|
4285
|
|
|
4286 void
|
|
|
4287 vars_of_fileio (void)
|
|
|
4288 {
|
|
|
4289 DEFVAR_LISP ("auto-save-file-format", &Vauto_save_file_format /*
|
|
|
4290 *Format in which to write auto-save files.
|
|
|
4291 Should be a list of symbols naming formats that are defined in `format-alist'.
|
|
|
4292 If it is t, which is the default, auto-save files are written in the
|
|
|
4293 same format as a regular save would use.
|
|
|
4294 */ );
|
|
|
4295 Vauto_save_file_format = Qt;
|
|
|
4296
|
|
|
4297 DEFVAR_LISP ("file-name-handler-alist", &Vfile_name_handler_alist /*
|
|
|
4298 *Alist of elements (REGEXP . HANDLER) for file names handled specially.
|
|
|
4299 If a file name matches REGEXP, then all I/O on that file is done by calling
|
|
|
4300 HANDLER.
|
|
|
4301
|
|
|
4302 The first argument given to HANDLER is the name of the I/O primitive
|
|
|
4303 to be handled; the remaining arguments are the arguments that were
|
|
|
4304 passed to that primitive. For example, if you do
|
|
|
4305 (file-exists-p FILENAME)
|
|
|
4306 and FILENAME is handled by HANDLER, then HANDLER is called like this:
|
|
|
4307 (funcall HANDLER 'file-exists-p FILENAME)
|
|
|
4308 The function `find-file-name-handler' checks this list for a handler
|
|
|
4309 for its argument.
|
|
|
4310 */ );
|
|
|
4311 Vfile_name_handler_alist = Qnil;
|
|
|
4312
|
|
|
4313 DEFVAR_LISP ("after-insert-file-functions", &Vafter_insert_file_functions /*
|
|
|
4314 A list of functions to be called at the end of `insert-file-contents'.
|
|
|
4315 Each is passed one argument, the number of bytes inserted. It should return
|
|
|
4316 the new byte count, and leave point the same. If `insert-file-contents' is
|
|
|
4317 intercepted by a handler from `file-name-handler-alist', that handler is
|
|
|
4318 responsible for calling the after-insert-file-functions if appropriate.
|
|
|
4319 */ );
|
|
|
4320 Vafter_insert_file_functions = Qnil;
|
|
|
4321
|
|
|
4322 DEFVAR_LISP ("write-region-annotate-functions",
|
|
|
4323 &Vwrite_region_annotate_functions /*
|
|
|
4324 A list of functions to be called at the start of `write-region'.
|
|
|
4325 Each is passed two arguments, START and END, as for `write-region'.
|
|
|
4326 It should return a list of pairs (POSITION . STRING) of strings to be
|
|
|
4327 effectively inserted at the specified positions of the file being written
|
|
|
4328 \(1 means to insert before the first byte written). The POSITIONs must be
|
|
|
4329 sorted into increasing order. If there are several functions in the list,
|
|
|
4330 the several lists are merged destructively.
|
|
|
4331 */ );
|
|
|
4332 Vwrite_region_annotate_functions = Qnil;
|
|
|
4333
|
|
|
4334 DEFVAR_LISP ("write-region-annotations-so-far",
|
|
|
4335 &Vwrite_region_annotations_so_far /*
|
|
|
4336 When an annotation function is called, this holds the previous annotations.
|
|
|
4337 These are the annotations made by other annotation functions
|
|
|
4338 that were already called. See also `write-region-annotate-functions'.
|
|
|
4339 */ );
|
|
|
4340 Vwrite_region_annotations_so_far = Qnil;
|
|
|
4341
|
|
|
4342 DEFVAR_LISP ("inhibit-file-name-handlers", &Vinhibit_file_name_handlers /*
|
|
|
4343 A list of file name handlers that temporarily should not be used.
|
|
|
4344 This applies only to the operation `inhibit-file-name-operation'.
|
|
|
4345 */ );
|
|
|
4346 Vinhibit_file_name_handlers = Qnil;
|
|
|
4347
|
|
|
4348 DEFVAR_LISP ("inhibit-file-name-operation", &Vinhibit_file_name_operation /*
|
|
|
4349 The operation for which `inhibit-file-name-handlers' is applicable.
|
|
|
4350 */ );
|
|
|
4351 Vinhibit_file_name_operation = Qnil;
|
|
|
4352
|
|
|
4353 DEFVAR_LISP ("auto-save-list-file-name", &Vauto_save_list_file_name /*
|
|
|
4354 File name in which we write a list of all auto save file names.
|
|
|
4355 */ );
|
|
|
4356 Vauto_save_list_file_name = Qnil;
|
|
|
4357
|
|
444
|
4358 DEFVAR_LISP ("auto-save-list-file-prefix", &Vauto_save_list_file_prefix /*
|
|
|
4359 Prefix for generating auto-save-list-file-name.
|
|
|
4360 Emacs's pid and the system name will be appended to
|
|
|
4361 this prefix to create a unique file name.
|
|
|
4362 */ );
|
|
|
4363 Vauto_save_list_file_prefix = build_string ("~/.saves-");
|
|
|
4364
|
|
|
4365 DEFVAR_BOOL ("inhibit-auto-save-session", &inhibit_auto_save_session /*
|
|
|
4366 When non-nil, inhibit auto save list file creation.
|
|
|
4367 */ );
|
|
|
4368 inhibit_auto_save_session = 0;
|
|
|
4369
|
|
428
|
4370 DEFVAR_BOOL ("disable-auto-save-when-buffer-shrinks",
|
|
|
4371 &disable_auto_save_when_buffer_shrinks /*
|
|
|
4372 If non-nil, auto-saving is disabled when a buffer shrinks too much.
|
|
|
4373 This is to prevent you from losing your edits if you accidentally
|
|
|
4374 delete a large chunk of the buffer and don't notice it until too late.
|
|
|
4375 Saving the buffer normally turns auto-save back on.
|
|
|
4376 */ );
|
|
|
4377 disable_auto_save_when_buffer_shrinks = 1;
|
|
|
4378
|
|
|
4379 DEFVAR_LISP ("directory-sep-char", &Vdirectory_sep_char /*
|
|
|
4380 Directory separator character for built-in functions that return file names.
|
|
|
4381 The value should be either ?/ or ?\\ (any other value is treated as ?\\).
|
|
|
4382 This variable affects the built-in functions only on Windows,
|
|
|
4383 on other platforms, it is initialized so that Lisp code can find out
|
|
|
4384 what the normal separator is.
|
|
|
4385 */ );
|
|
771
|
4386 Vdirectory_sep_char = make_char (DEFAULT_DIRECTORY_SEP);
|
|
442
|
4387
|
|
|
4388 reinit_vars_of_fileio ();
|
|
428
|
4389 }
|
|
442
|
4390
|
|
|
4391 void
|
|
|
4392 reinit_vars_of_fileio (void)
|
|
|
4393 {
|
|
|
4394 /* We want temp_name_rand to be initialized to a value likely to be
|
|
|
4395 unique to the process, not to the executable. The danger is that
|
|
|
4396 two different XEmacs processes using the same binary on different
|
|
|
4397 machines creating temp files in the same directory will be
|
|
|
4398 unlucky enough to have the same pid. If we randomize using
|
|
|
4399 process startup time, then in practice they will be unlikely to
|
|
|
4400 collide. We use the microseconds field so that scripts that start
|
|
|
4401 simultaneous XEmacs processes on multiple machines will have less
|
|
|
4402 chance of collision. */
|
|
|
4403 {
|
|
|
4404 EMACS_TIME thyme;
|
|
|
4405
|
|
|
4406 EMACS_GET_TIME (thyme);
|
|
|
4407 temp_name_rand = (unsigned int) (EMACS_SECS (thyme) ^ EMACS_USECS (thyme));
|
|
|
4408 }
|
|
|
4409 }
|
