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0
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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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3 Copyright (C) 1996 Ben Wing.
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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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23
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24 #include <config.h>
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25 #include "lisp.h"
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26
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27 #include "buffer.h"
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28 #include "events.h"
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29 #include "frame.h"
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30 #include "insdel.h"
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31 #include "lstream.h"
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32 #include "redisplay.h"
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33 #include "sysdep.h"
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34 #include "window.h" /* minibuf_level */
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35
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2
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36 #ifdef HAVE_LIBGEN_H /* Must come before sysfile.h */
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37 #include <libgen.h>
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38 #endif
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0
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39 #include "sysfile.h"
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40 #include "sysproc.h"
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41 #include "syspwd.h"
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42 #include "systime.h"
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43 #include "sysdir.h"
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44
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45 #ifdef HPUX
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46 #include <netio.h>
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47 #ifdef HPUX_PRE_8_0
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48 #include <errnet.h>
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49 #endif
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50 #endif
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51
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52 /* Nonzero during writing of auto-save files */
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53 static int auto_saving;
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54
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55 /* Set by auto_save_1 to mode of original file so Fwrite_region_internal
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56 will create a new file with the same mode as the original */
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57 static int auto_save_mode_bits;
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58
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59 /* Alist of elements (REGEXP . HANDLER) for file names
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60 whose I/O is done with a special handler. */
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61 Lisp_Object Vfile_name_handler_alist;
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62
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63 /* Format for auto-save files */
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64 Lisp_Object Vauto_save_file_format;
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65
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66 /* Lisp functions for translating file formats */
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67 Lisp_Object Qformat_decode, Qformat_annotate_function;
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68
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69 /* Functions to be called to process text properties in inserted file. */
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70 Lisp_Object Vafter_insert_file_functions;
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71
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72 /* Functions to be called to create text property annotations for file. */
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73 Lisp_Object Vwrite_region_annotate_functions;
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74
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75 /* During build_annotations, each time an annotation function is called,
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76 this holds the annotations made by the previous functions. */
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77 Lisp_Object Vwrite_region_annotations_so_far;
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78
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79 /* File name in which we write a list of all our auto save files. */
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80 Lisp_Object Vauto_save_list_file_name;
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81
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82 /* On VMS, nonzero means write new files with record format stmlf.
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83 Zero means use var format. */
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84 int vms_stmlf_recfm;
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85
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86 int disable_auto_save_when_buffer_shrinks;
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87
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88 Lisp_Object Qfile_name_handler_alist;
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89
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90 /* These variables describe handlers that have "already" had a chance
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91 to handle the current operation.
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92
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93 Vinhibit_file_name_handlers is a list of file name handlers.
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94 Vinhibit_file_name_operation is the operation being handled.
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95 If we try to handle that operation, we ignore those handlers. */
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96
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97 static Lisp_Object Vinhibit_file_name_handlers;
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98 static Lisp_Object Vinhibit_file_name_operation;
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99
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100 Lisp_Object Qfile_error, Qfile_already_exists;
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101
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102 Lisp_Object Qauto_save_hook;
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103 Lisp_Object Qauto_save_error;
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104 Lisp_Object Qauto_saving;
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105
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106 Lisp_Object Qcar_less_than_car;
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107
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108 Lisp_Object Qcompute_buffer_file_truename;
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109
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110 /* signal a file error when errno contains a meaningful value. */
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111
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112 DOESNT_RETURN
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113 report_file_error (CONST char *string, Lisp_Object data)
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114 {
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40
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115 /* #### dmoore - This uses current_buffer, better make sure no one
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116 has GC'd the current buffer. File handlers are giving me a headache
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117 maybe I'll just always protect current_buffer around all of those
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118 calls. */
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119
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0
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120 /* mrb: #### Needs to be fixed at a lower level; errstring needs to
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121 be MULEized. The following at least prevents a crash... */
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122 Lisp_Object errstring = build_ext_string (strerror (errno), FORMAT_BINARY);
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123
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124 /* System error messages are capitalized. Downcase the initial
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125 unless it is followed by a slash. */
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126 if (string_char (XSTRING (errstring), 1) != '/')
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127 set_string_char (XSTRING (errstring), 0,
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128 DOWNCASE (current_buffer,
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129 string_char (XSTRING (errstring), 0)));
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130
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131 signal_error (Qfile_error,
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132 Fcons (build_translated_string (string),
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133 Fcons (errstring, data)));
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134 }
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135
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136 void
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137 maybe_report_file_error (CONST char *string, Lisp_Object data,
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138 Lisp_Object class, Error_behavior errb)
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139 {
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140 Lisp_Object errstring;
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141
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142 /* Optimization: */
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143 if (ERRB_EQ (errb, ERROR_ME_NOT))
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144 return;
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145
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146 errstring = build_string (strerror (errno));
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147
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148 /* System error messages are capitalized. Downcase the initial
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149 unless it is followed by a slash. */
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150 if (string_char (XSTRING (errstring), 1) != '/')
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151 set_string_char (XSTRING (errstring), 0,
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152 DOWNCASE (current_buffer,
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153 string_char (XSTRING (errstring), 0)));
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154
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155 maybe_signal_error (Qfile_error,
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156 Fcons (build_translated_string (string),
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157 Fcons (errstring, data)),
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158 class, errb);
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159 }
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160
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161 /* signal a file error when errno does not contain a meaningful value. */
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162
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163 DOESNT_RETURN
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164 signal_file_error (CONST char *string, Lisp_Object data)
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165 {
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166 signal_error (Qfile_error,
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167 list2 (build_translated_string (string), data));
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168 }
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169
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170 void
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171 maybe_signal_file_error (CONST char *string, Lisp_Object data,
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172 Lisp_Object class, Error_behavior errb)
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173 {
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174 /* Optimization: */
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175 if (ERRB_EQ (errb, ERROR_ME_NOT))
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176 return;
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177 maybe_signal_error (Qfile_error,
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178 list2 (build_translated_string (string), data),
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179 class, errb);
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180 }
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181
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182 DOESNT_RETURN
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183 signal_double_file_error (CONST char *string1, CONST char *string2,
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184 Lisp_Object data)
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185 {
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186 signal_error (Qfile_error,
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187 list3 (build_translated_string (string1),
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188 build_translated_string (string2),
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189 data));
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190 }
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191
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192 void
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193 maybe_signal_double_file_error (CONST char *string1, CONST char *string2,
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194 Lisp_Object data, Lisp_Object class,
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195 Error_behavior errb)
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196 {
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197 /* Optimization: */
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198 if (ERRB_EQ (errb, ERROR_ME_NOT))
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199 return;
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200 maybe_signal_error (Qfile_error,
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201 list3 (build_translated_string (string1),
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202 build_translated_string (string2),
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203 data),
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204 class, errb);
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205 }
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206
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207 DOESNT_RETURN
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208 signal_double_file_error_2 (CONST char *string1, CONST char *string2,
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209 Lisp_Object data1, Lisp_Object data2)
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210 {
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211 signal_error (Qfile_error,
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212 list4 (build_translated_string (string1),
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213 build_translated_string (string2),
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214 data1, data2));
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215 }
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216
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217 void
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218 maybe_signal_double_file_error_2 (CONST char *string1, CONST char *string2,
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219 Lisp_Object data1, Lisp_Object data2,
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220 Lisp_Object class, Error_behavior errb)
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221 {
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222 /* Optimization: */
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223 if (ERRB_EQ (errb, ERROR_ME_NOT))
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224 return;
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225 maybe_signal_error (Qfile_error,
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226 list4 (build_translated_string (string1),
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227 build_translated_string (string2),
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228 data1, data2),
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229 class, errb);
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230 }
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231
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232 static Lisp_Object
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233 close_file_unwind (Lisp_Object fd)
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234 {
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235 if (CONSP (fd))
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236 {
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237 if (INTP (XCAR (fd)))
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238 close (XINT (XCAR (fd)));
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239
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240 free_cons (XCONS (fd));
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241 }
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242 else
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243 close (XINT (fd));
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244
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245 return Qnil;
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246 }
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247
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248 static Lisp_Object
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249 close_stream_unwind (Lisp_Object stream)
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250 {
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251 Lstream_close (XLSTREAM (stream));
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252 return Qnil;
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253 }
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254
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255 /* Restore point, having saved it as a marker. */
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256
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257 static Lisp_Object
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258 restore_point_unwind (Lisp_Object point_marker)
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259 {
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260 BUF_SET_PT (current_buffer, marker_position (point_marker));
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261 return (Fset_marker (point_marker, Qnil, Qnil));
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262 }
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263
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264 /* Versions of read() and write() that allow quitting out of the actual
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265 I/O. We don't use immediate_quit (i.e. direct longjmp() out of the
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266 signal handler) because that's way too losing.
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267
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268 (#### Actually, longjmp()ing out of the signal handler may not be
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269 as losing as I thought. See sys_do_signal() in sysdep.c.)
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270
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271 Solaris include files declare the return value as ssize_t.
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272 Is that standard? */
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273 int
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274 read_allowing_quit (int fildes, void *buf, unsigned int nbyte)
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275 {
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276 int nread;
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277 QUIT;
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278
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279 nread = sys_read_1 (fildes, buf, nbyte, 1);
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280 return nread;
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281 }
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282
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283 int
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284 write_allowing_quit (int fildes, CONST void *buf, unsigned int nbyte)
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285 {
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286 int nread;
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287
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288 QUIT;
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289 nread = sys_write_1 (fildes, buf, nbyte, 1);
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290 return nread;
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291 }
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292
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293
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294 Lisp_Object Qexpand_file_name;
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295 Lisp_Object Qfile_truename;
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296 Lisp_Object Qsubstitute_in_file_name;
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297 Lisp_Object Qdirectory_file_name;
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298 Lisp_Object Qfile_name_directory;
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299 Lisp_Object Qfile_name_nondirectory;
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300 Lisp_Object Qunhandled_file_name_directory;
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301 Lisp_Object Qfile_name_as_directory;
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302 Lisp_Object Qcopy_file;
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303 Lisp_Object Qmake_directory_internal;
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304 Lisp_Object Qdelete_directory;
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305 Lisp_Object Qdelete_file;
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306 Lisp_Object Qrename_file;
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307 Lisp_Object Qadd_name_to_file;
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308 Lisp_Object Qmake_symbolic_link;
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309 Lisp_Object Qfile_exists_p;
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310 Lisp_Object Qfile_executable_p;
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311 Lisp_Object Qfile_readable_p;
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312 Lisp_Object Qfile_symlink_p;
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313 Lisp_Object Qfile_writable_p;
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314 Lisp_Object Qfile_directory_p;
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315 Lisp_Object Qfile_regular_p;
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316 Lisp_Object Qfile_accessible_directory_p;
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317 Lisp_Object Qfile_modes;
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318 Lisp_Object Qset_file_modes;
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319 Lisp_Object Qfile_newer_than_file_p;
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320 Lisp_Object Qinsert_file_contents;
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321 Lisp_Object Qwrite_region;
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322 Lisp_Object Qverify_visited_file_modtime;
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323 Lisp_Object Qset_visited_file_modtime;
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324 Lisp_Object Qset_buffer_modtime;
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325
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326 /* If FILENAME is handled specially on account of its syntax,
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327 return its handler function. Otherwise, return nil. */
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328
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20
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329 DEFUN ("find-file-name-handler", Ffind_file_name_handler, 1, 2, 0, /*
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0
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330 Return FILENAME's handler function for OPERATION, if it has one.
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331 Otherwise, return nil.
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332 A file name is handled if one of the regular expressions in
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333 `file-name-handler-alist' matches it.
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334
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335 If OPERATION equals `inhibit-file-name-operation', then we ignore
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336 any handlers that are members of `inhibit-file-name-handlers',
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337 but we still do run any other handlers. This lets handlers
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338 use the standard functions without calling themselves recursively.
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20
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339 */
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340 (filename, operation))
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0
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341 {
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44
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342 /* This function does not GC */
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0
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343 /* This function must not munge the match data. */
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344 Lisp_Object chain, inhibited_handlers;
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345
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346 CHECK_STRING (filename);
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347
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348 if (EQ (operation, Vinhibit_file_name_operation))
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349 inhibited_handlers = Vinhibit_file_name_handlers;
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350 else
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351 inhibited_handlers = Qnil;
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352
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353 for (chain = Vfile_name_handler_alist; CONSP (chain);
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354 chain = XCDR (chain))
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355 {
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356 Lisp_Object elt = XCAR (chain);
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357 if (CONSP (elt))
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358 {
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359 Lisp_Object string;
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360 string = XCAR (elt);
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361 if (STRINGP (string)
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362 && (fast_lisp_string_match (string, filename) >= 0))
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363 {
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364 Lisp_Object handler = XCDR (elt);
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365 if (NILP (Fmemq (handler, inhibited_handlers)))
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366 return (handler);
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367 }
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368 }
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369 QUIT;
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370 }
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371 return Qnil;
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372 }
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373
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374 static Lisp_Object
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375 call2_check_string (Lisp_Object fn, Lisp_Object arg0, Lisp_Object arg1)
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376 {
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44
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377 /* This function can call lisp */
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0
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378 Lisp_Object result = call2 (fn, arg0, arg1);
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379 CHECK_STRING (result);
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380 return (result);
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381 }
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382
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383 static Lisp_Object
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40
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384 call2_check_string_or_nil (Lisp_Object fn, Lisp_Object arg0, Lisp_Object arg1)
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385 {
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44
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386 /* This function can call lisp */
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40
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387 Lisp_Object result = call2 (fn, arg0, arg1);
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388 if (!NILP (result))
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389 CHECK_STRING (result);
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390 return (result);
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391 }
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392
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393 static Lisp_Object
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0
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394 call3_check_string (Lisp_Object fn, Lisp_Object arg0,
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395 Lisp_Object arg1, Lisp_Object arg2)
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396 {
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44
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397 /* This function can call lisp */
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0
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398 Lisp_Object result = call3 (fn, arg0, arg1, arg2);
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399 CHECK_STRING (result);
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400 return (result);
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401 }
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402
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403
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20
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404 DEFUN ("file-name-directory", Ffile_name_directory, 1, 1, 0, /*
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0
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405 Return the directory component in file name NAME.
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406 Return nil if NAME does not include a directory.
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|
|
407 Otherwise return a directory spec.
|
|
|
408 Given a Unix syntax file name, returns a string ending in slash;
|
|
|
409 on VMS, perhaps instead a string ending in `:', `]' or `>'.
|
|
20
|
410 */
|
|
|
411 (file))
|
|
0
|
412 {
|
|
44
|
413 /* This function can call lisp */
|
|
0
|
414 Bufbyte *beg;
|
|
|
415 Bufbyte *p;
|
|
|
416 Lisp_Object handler;
|
|
|
417
|
|
|
418 CHECK_STRING (file);
|
|
|
419
|
|
|
420 /* If the file name has special constructs in it,
|
|
|
421 call the corresponding file handler. */
|
|
|
422 handler = Ffind_file_name_handler (file, Qfile_name_directory);
|
|
|
423 if (!NILP (handler))
|
|
40
|
424 return (call2_check_string_or_nil (handler, Qfile_name_directory,
|
|
|
425 file));
|
|
0
|
426
|
|
|
427 #ifdef FILE_SYSTEM_CASE
|
|
|
428 file = FILE_SYSTEM_CASE (file);
|
|
|
429 #endif
|
|
16
|
430 beg = XSTRING_DATA (file);
|
|
|
431 p = beg + XSTRING_LENGTH (file);
|
|
0
|
432
|
|
|
433 while (p != beg && !IS_ANY_SEP (p[-1])
|
|
|
434 #ifdef VMS
|
|
|
435 && p[-1] != ':' && p[-1] != ']' && p[-1] != '>'
|
|
|
436 #endif /* VMS */
|
|
|
437 ) p--;
|
|
|
438
|
|
|
439 if (p == beg)
|
|
|
440 return Qnil;
|
|
|
441 #ifdef DOS_NT
|
|
|
442 /* Expansion of "c:" to drive and default directory. */
|
|
|
443 /* (NT does the right thing.) */
|
|
|
444 if (p == beg + 2 && beg[1] == ':')
|
|
|
445 {
|
|
|
446 int drive = (*beg) - 'a';
|
|
|
447 /* MAXPATHLEN+1 is guaranteed to be enough space for getdefdir. */
|
|
|
448 Bufbyte *res = (Bufbyte *) alloca (MAXPATHLEN + 5);
|
|
|
449 unsigned char *res1;
|
|
|
450 #ifdef WINDOWSNT
|
|
|
451 res1 = res;
|
|
|
452 /* The NT version places the drive letter at the beginning already. */
|
|
|
453 #else /* not WINDOWSNT */
|
|
|
454 /* On MSDOG we must put the drive letter in by hand. */
|
|
|
455 res1 = res + 2;
|
|
|
456 #endif /* not WINDOWSNT */
|
|
|
457 if (getdefdir (drive + 1, res))
|
|
|
458 {
|
|
|
459 #ifdef MSDOS
|
|
|
460 res[0] = drive + 'a';
|
|
|
461 res[1] = ':';
|
|
|
462 #endif /* MSDOS */
|
|
|
463 if (IS_DIRECTORY_SEP (res[strlen ((char *) res) - 1]))
|
|
|
464 strcat ((char *) res, "/");
|
|
|
465 beg = res;
|
|
|
466 p = beg + strlen ((char *) beg);
|
|
|
467 }
|
|
|
468 }
|
|
|
469 #endif /* DOS_NT */
|
|
|
470 return make_string (beg, p - beg);
|
|
|
471 }
|
|
|
472
|
|
20
|
473 DEFUN ("file-name-nondirectory", Ffile_name_nondirectory, 1, 1, 0, /*
|
|
0
|
474 Return file name NAME sans its directory.
|
|
|
475 For example, in a Unix-syntax file name,
|
|
|
476 this is everything after the last slash,
|
|
|
477 or the entire name if it contains no slash.
|
|
20
|
478 */
|
|
|
479 (file))
|
|
0
|
480 {
|
|
44
|
481 /* This function can call lisp */
|
|
0
|
482 Bufbyte *beg, *p, *end;
|
|
|
483 Lisp_Object handler;
|
|
|
484
|
|
|
485 CHECK_STRING (file);
|
|
|
486
|
|
|
487 /* If the file name has special constructs in it,
|
|
|
488 call the corresponding file handler. */
|
|
|
489 handler = Ffind_file_name_handler (file, Qfile_name_nondirectory);
|
|
|
490 if (!NILP (handler))
|
|
|
491 return (call2_check_string (handler, Qfile_name_nondirectory,
|
|
|
492 file));
|
|
|
493
|
|
16
|
494 beg = XSTRING_DATA (file);
|
|
|
495 end = p = beg + XSTRING_LENGTH (file);
|
|
0
|
496
|
|
|
497 while (p != beg && !IS_ANY_SEP (p[-1])
|
|
|
498 #ifdef VMS
|
|
|
499 && p[-1] != ':' && p[-1] != ']' && p[-1] != '>'
|
|
|
500 #endif /* VMS */
|
|
|
501 ) p--;
|
|
|
502
|
|
|
503 return make_string (p, end - p);
|
|
|
504 }
|
|
|
505
|
|
20
|
506 DEFUN ("unhandled-file-name-directory", Funhandled_file_name_directory, 1, 1, 0, /*
|
|
0
|
507 Return a directly usable directory name somehow associated with FILENAME.
|
|
|
508 A `directly usable' directory name is one that may be used without the
|
|
|
509 intervention of any file handler.
|
|
|
510 If FILENAME is a directly usable file itself, return
|
|
|
511 (file-name-directory FILENAME).
|
|
|
512 The `call-process' and `start-process' functions use this function to
|
|
|
513 get a current directory to run processes in.
|
|
20
|
514 */
|
|
|
515 (filename))
|
|
0
|
516 {
|
|
44
|
517 /* This function can call lisp */
|
|
0
|
518 Lisp_Object handler;
|
|
|
519
|
|
|
520 /* If the file name has special constructs in it,
|
|
|
521 call the corresponding file handler. */
|
|
|
522 handler = Ffind_file_name_handler (filename, Qunhandled_file_name_directory);
|
|
|
523 if (!NILP (handler))
|
|
|
524 return call2 (handler, Qunhandled_file_name_directory,
|
|
|
525 filename);
|
|
|
526
|
|
|
527 return Ffile_name_directory (filename);
|
|
|
528 }
|
|
|
529
|
|
|
530
|
|
|
531 static char *
|
|
|
532 file_name_as_directory (char *out, char *in)
|
|
|
533 {
|
|
|
534 int size = strlen (in) - 1;
|
|
|
535
|
|
|
536 strcpy (out, in);
|
|
|
537
|
|
|
538 #ifdef VMS
|
|
|
539 /* Is it already a directory string? */
|
|
|
540 if (in[size] == ':' || in[size] == ']' || in[size] == '>')
|
|
|
541 return out;
|
|
|
542 /* Is it a VMS directory file name? If so, hack VMS syntax. */
|
|
|
543 else if (! strchr (in, '/')
|
|
|
544 && ((size > 3 && ! strcmp (&in[size - 3], ".DIR"))
|
|
|
545 || (size > 3 && ! strcmp (&in[size - 3], ".dir"))
|
|
|
546 || (size > 5 && (! strncmp (&in[size - 5], ".DIR", 4)
|
|
|
547 || ! strncmp (&in[size - 5], ".dir", 4))
|
|
|
548 && (in[size - 1] == '.' || in[size - 1] == ';')
|
|
|
549 && in[size] == '1')))
|
|
|
550 {
|
|
|
551 char *p, *dot;
|
|
|
552 char brack;
|
|
|
553
|
|
|
554 /* x.dir -> [.x]
|
|
|
555 dir:x.dir --> dir:[x]
|
|
|
556 dir:[x]y.dir --> dir:[x.y] */
|
|
|
557 p = in + size;
|
|
|
558 while (p != in && *p != ':' && *p != '>' && *p != ']') p--;
|
|
|
559 if (p != in)
|
|
|
560 {
|
|
|
561 strncpy (out, in, p - in);
|
|
|
562 out[p - in] = '\0';
|
|
|
563 if (*p == ':')
|
|
|
564 {
|
|
|
565 brack = ']';
|
|
|
566 strcat (out, ":[");
|
|
|
567 }
|
|
|
568 else
|
|
|
569 {
|
|
|
570 brack = *p;
|
|
|
571 strcat (out, ".");
|
|
|
572 }
|
|
|
573 p++;
|
|
|
574 }
|
|
|
575 else
|
|
|
576 {
|
|
|
577 brack = ']';
|
|
|
578 strcpy (out, "[.");
|
|
|
579 }
|
|
|
580 dot = strchr (p, '.');
|
|
|
581 if (dot)
|
|
|
582 {
|
|
|
583 /* blindly remove any extension */
|
|
|
584 size = strlen (out) + (dot - p);
|
|
|
585 strncat (out, p, dot - p);
|
|
|
586 }
|
|
|
587 else
|
|
|
588 {
|
|
|
589 strcat (out, p);
|
|
|
590 size = strlen (out);
|
|
|
591 }
|
|
|
592 out[size++] = brack;
|
|
|
593 out[size] = '\0';
|
|
|
594 }
|
|
|
595 #else /* not VMS */
|
|
|
596 /* For Unix syntax, Append a slash if necessary */
|
|
|
597 if (!IS_ANY_SEP (out[size]))
|
|
|
598 {
|
|
|
599 out[size + 1] = DIRECTORY_SEP;
|
|
|
600 out[size + 2] = '\0';
|
|
|
601 }
|
|
|
602 #endif /* not VMS */
|
|
|
603 return out;
|
|
|
604 }
|
|
|
605
|
|
20
|
606 DEFUN ("file-name-as-directory", Ffile_name_as_directory, 1, 1, 0, /*
|
|
0
|
607 Return a string representing file FILENAME interpreted as a directory.
|
|
|
608 This operation exists because a directory is also a file, but its name as
|
|
|
609 a directory is different from its name as a file.
|
|
|
610 The result can be used as the value of `default-directory'
|
|
|
611 or passed as second argument to `expand-file-name'.
|
|
|
612 For a Unix-syntax file name, just appends a slash.
|
|
|
613 On VMS, converts \"[X]FOO.DIR\" to \"[X.FOO]\", etc.
|
|
20
|
614 */
|
|
|
615 (file))
|
|
0
|
616 {
|
|
44
|
617 /* This function can call lisp */
|
|
0
|
618 char *buf;
|
|
|
619 Lisp_Object handler;
|
|
|
620
|
|
|
621 CHECK_STRING (file);
|
|
|
622
|
|
|
623 /* If the file name has special constructs in it,
|
|
|
624 call the corresponding file handler. */
|
|
|
625 handler = Ffind_file_name_handler (file, Qfile_name_as_directory);
|
|
|
626 if (!NILP (handler))
|
|
|
627 return (call2_check_string (handler, Qfile_name_as_directory,
|
|
|
628 file));
|
|
|
629
|
|
16
|
630 buf = (char *) alloca (XSTRING_LENGTH (file) + 10);
|
|
0
|
631 return build_string (file_name_as_directory
|
|
16
|
632 (buf, (char *) XSTRING_DATA (file)));
|
|
0
|
633 }
|
|
|
634
|
|
|
635 /*
|
|
|
636 * Convert from directory name to filename.
|
|
|
637 * On VMS:
|
|
|
638 * xyzzy:[mukesh.emacs] => xyzzy:[mukesh]emacs.dir.1
|
|
|
639 * xyzzy:[mukesh] => xyzzy:[000000]mukesh.dir.1
|
|
|
640 * On UNIX, it's simple: just make sure there is a terminating /
|
|
|
641
|
|
|
642 * Value is nonzero if the string output is different from the input.
|
|
|
643 */
|
|
|
644
|
|
|
645 static int
|
|
|
646 directory_file_name (CONST char *src, char *dst)
|
|
|
647 {
|
|
|
648 long slen;
|
|
|
649 #ifdef VMS
|
|
|
650 long rlen;
|
|
|
651 char * ptr, * rptr;
|
|
|
652 char bracket;
|
|
|
653 struct FAB fab = cc$rms_fab;
|
|
|
654 struct NAM nam = cc$rms_nam;
|
|
|
655 char esa[NAM$C_MAXRSS];
|
|
|
656 #endif /* VMS */
|
|
|
657
|
|
|
658 slen = strlen (src);
|
|
|
659 #ifdef VMS
|
|
|
660 if (! strchr (src, '/')
|
|
|
661 && (src[slen - 1] == ']'
|
|
|
662 || src[slen - 1] == ':'
|
|
|
663 || src[slen - 1] == '>'))
|
|
|
664 {
|
|
|
665 /* VMS style - convert [x.y.z] to [x.y]z, [x] to [000000]x */
|
|
|
666 fab.fab$l_fna = src;
|
|
|
667 fab.fab$b_fns = slen;
|
|
|
668 fab.fab$l_nam = &nam;
|
|
|
669 fab.fab$l_fop = FAB$M_NAM;
|
|
|
670
|
|
|
671 nam.nam$l_esa = esa;
|
|
|
672 nam.nam$b_ess = sizeof esa;
|
|
|
673 nam.nam$b_nop |= NAM$M_SYNCHK;
|
|
|
674
|
|
|
675 /* We call SYS$PARSE to handle such things as [--] for us. */
|
|
|
676 if (SYS$PARSE(&fab, 0, 0) == RMS$_NORMAL)
|
|
|
677 {
|
|
|
678 slen = nam.nam$b_esl;
|
|
|
679 if (esa[slen - 1] == ';' && esa[slen - 2] == '.')
|
|
|
680 slen -= 2;
|
|
|
681 esa[slen] = '\0';
|
|
|
682 src = esa;
|
|
|
683 }
|
|
|
684 if (src[slen - 1] != ']' && src[slen - 1] != '>')
|
|
|
685 {
|
|
|
686 /* what about when we have logical_name:???? */
|
|
|
687 if (src[slen - 1] == ':')
|
|
|
688 { /* Xlate logical name and see what we get */
|
|
|
689 ptr = strcpy (dst, src); /* upper case for getenv */
|
|
|
690 while (*ptr)
|
|
|
691 {
|
|
|
692 *ptr = toupper ((unsigned char) *ptr);
|
|
|
693 ptr++;
|
|
|
694 }
|
|
|
695 dst[slen - 1] = 0; /* remove colon */
|
|
|
696 if (!(src = egetenv (dst)))
|
|
|
697 return 0;
|
|
|
698 /* should we jump to the beginning of this procedure?
|
|
|
699 Good points: allows us to use logical names that xlate
|
|
|
700 to Unix names,
|
|
|
701 Bad points: can be a problem if we just translated to a device
|
|
|
702 name...
|
|
|
703 For now, I'll punt and always expect VMS names, and hope for
|
|
|
704 the best! */
|
|
|
705 slen = strlen (src);
|
|
|
706 if (src[slen - 1] != ']' && src[slen - 1] != '>')
|
|
|
707 { /* no recursion here! */
|
|
|
708 strcpy (dst, src);
|
|
|
709 return 0;
|
|
|
710 }
|
|
|
711 }
|
|
|
712 else
|
|
|
713 { /* not a directory spec */
|
|
|
714 strcpy (dst, src);
|
|
|
715 return 0;
|
|
|
716 }
|
|
|
717 }
|
|
|
718 bracket = src[slen - 1];
|
|
|
719
|
|
|
720 /* If bracket is ']' or '>', bracket - 2 is the corresponding
|
|
|
721 opening bracket. */
|
|
|
722 ptr = strchr (src, bracket - 2);
|
|
|
723 if (ptr == 0)
|
|
|
724 { /* no opening bracket */
|
|
|
725 strcpy (dst, src);
|
|
|
726 return 0;
|
|
|
727 }
|
|
|
728 if (!(rptr = strrchr (src, '.')))
|
|
|
729 rptr = ptr;
|
|
|
730 slen = rptr - src;
|
|
|
731 strncpy (dst, src, slen);
|
|
|
732 dst[slen] = '\0';
|
|
|
733 if (*rptr == '.')
|
|
|
734 {
|
|
|
735 dst[slen++] = bracket;
|
|
|
736 dst[slen] = '\0';
|
|
|
737 }
|
|
|
738 else
|
|
|
739 {
|
|
|
740 /* If we have the top-level of a rooted directory (i.e. xx:[000000]),
|
|
|
741 then translate the device and recurse. */
|
|
|
742 if (dst[slen - 1] == ':'
|
|
|
743 && dst[slen - 2] != ':' /* skip decnet nodes */
|
|
|
744 && strcmp(src + slen, "[000000]") == 0)
|
|
|
745 {
|
|
|
746 dst[slen - 1] = '\0';
|
|
|
747 if ((ptr = egetenv (dst))
|
|
|
748 && (rlen = strlen (ptr) - 1) > 0
|
|
|
749 && (ptr[rlen] == ']' || ptr[rlen] == '>')
|
|
|
750 && ptr[rlen - 1] == '.')
|
|
|
751 {
|
|
|
752 char * buf = (char *) alloca (strlen (ptr) + 1);
|
|
|
753 strcpy (buf, ptr);
|
|
|
754 buf[rlen - 1] = ']';
|
|
|
755 buf[rlen] = '\0';
|
|
|
756 return directory_file_name (buf, dst);
|
|
|
757 }
|
|
|
758 else
|
|
|
759 dst[slen - 1] = ':';
|
|
|
760 }
|
|
|
761 strcat (dst, "[000000]");
|
|
|
762 slen += 8;
|
|
|
763 }
|
|
|
764 rptr++;
|
|
|
765 rlen = strlen (rptr) - 1;
|
|
|
766 strncat (dst, rptr, rlen);
|
|
|
767 dst[slen + rlen] = '\0';
|
|
|
768 strcat (dst, ".DIR.1");
|
|
|
769 return 1;
|
|
|
770 }
|
|
|
771 #endif /* VMS */
|
|
|
772 /* Process as Unix format: just remove any final slash.
|
|
|
773 But leave "/" unchanged; do not change it to "". */
|
|
|
774 strcpy (dst, src);
|
|
|
775 #ifdef APOLLO
|
|
|
776 /* Handle // as root for apollo's. */
|
|
|
777 if ((slen > 2 && dst[slen - 1] == '/')
|
|
|
778 || (slen > 1 && dst[0] != '/' && dst[slen - 1] == '/'))
|
|
|
779 dst[slen - 1] = 0;
|
|
|
780 #else
|
|
|
781 if (slen > 1
|
|
|
782 && IS_DIRECTORY_SEP (dst[slen - 1])
|
|
|
783 #ifdef DOS_NT
|
|
|
784 && !IS_ANY_SEP (dst[slen - 2])
|
|
|
785 #endif
|
|
|
786 )
|
|
|
787 dst[slen - 1] = 0;
|
|
|
788 #endif
|
|
|
789 return 1;
|
|
|
790 }
|
|
|
791
|
|
20
|
792 DEFUN ("directory-file-name", Fdirectory_file_name, 1, 1, 0, /*
|
|
0
|
793 Return the file name of the directory named DIR.
|
|
|
794 This is the name of the file that holds the data for the directory DIR.
|
|
|
795 This operation exists because a directory is also a file, but its name as
|
|
|
796 a directory is different from its name as a file.
|
|
|
797 In Unix-syntax, this function just removes the final slash.
|
|
|
798 On VMS, given a VMS-syntax directory name such as \"[X.Y]\",
|
|
|
799 it returns a file name such as \"[X]Y.DIR.1\".
|
|
20
|
800 */
|
|
|
801 (directory))
|
|
0
|
802 {
|
|
44
|
803 /* This function can call lisp */
|
|
0
|
804 char *buf;
|
|
|
805 Lisp_Object handler;
|
|
|
806
|
|
|
807 CHECK_STRING (directory);
|
|
|
808
|
|
|
809 #if 0 /* #### WTF? */
|
|
|
810 if (NILP (directory))
|
|
|
811 return Qnil;
|
|
|
812 #endif
|
|
|
813
|
|
|
814 /* If the file name has special constructs in it,
|
|
|
815 call the corresponding file handler. */
|
|
|
816 handler = Ffind_file_name_handler (directory, Qdirectory_file_name);
|
|
|
817 if (!NILP (handler))
|
|
|
818 return (call2_check_string (handler, Qdirectory_file_name,
|
|
|
819 directory));
|
|
|
820 #ifdef VMS
|
|
|
821 /* 20 extra chars is insufficient for VMS, since we might perform a
|
|
|
822 logical name translation. an equivalence string can be up to 255
|
|
|
823 chars long, so grab that much extra space... - sss */
|
|
16
|
824 buf = (char *) alloca (XSTRING_LENGTH (directory) + 20 + 255);
|
|
0
|
825 #else
|
|
16
|
826 buf = (char *) alloca (XSTRING_LENGTH (directory) + 20);
|
|
0
|
827 #endif
|
|
16
|
828 directory_file_name ((char *) XSTRING_DATA (directory), buf);
|
|
0
|
829 return build_string (buf);
|
|
|
830 }
|
|
|
831
|
|
20
|
832 DEFUN ("make-temp-name", Fmake_temp_name, 1, 1, 0, /*
|
|
0
|
833 Generate temporary file name (string) starting with PREFIX (a string).
|
|
|
834 The Emacs process number forms part of the result,
|
|
|
835 so there is no danger of generating a name being used by another process.
|
|
20
|
836 */
|
|
|
837 (prefix))
|
|
0
|
838 {
|
|
|
839 CONST char suffix[] = "XXXXXX";
|
|
|
840 Bufbyte *data;
|
|
|
841 Bytecount len;
|
|
|
842 Lisp_Object val;
|
|
|
843
|
|
|
844 CHECK_STRING (prefix);
|
|
16
|
845 len = XSTRING_LENGTH (prefix);
|
|
0
|
846 val = make_uninit_string (len + countof (suffix) - 1);
|
|
16
|
847 data = XSTRING_DATA (val);
|
|
|
848 memcpy (data, XSTRING_DATA (prefix), len);
|
|
0
|
849 memcpy (data + len, suffix, countof (suffix));
|
|
|
850 /* !!#### does mktemp() Mule-encapsulate? */
|
|
|
851 mktemp ((char *) data);
|
|
|
852
|
|
|
853 return val;
|
|
|
854 }
|
|
|
855
|
|
20
|
856 DEFUN ("expand-file-name", Fexpand_file_name, 1, 2, 0, /*
|
|
0
|
857 Convert FILENAME to absolute, and canonicalize it.
|
|
|
858 Second arg DEFAULT is directory to start with if FILENAME is relative
|
|
|
859 (does not start with slash); if DEFAULT is nil or missing,
|
|
|
860 the current buffer's value of default-directory is used.
|
|
|
861 Path components that are `.' are removed, and
|
|
|
862 path components followed by `..' are removed, along with the `..' itself;
|
|
|
863 note that these simplifications are done without checking the resulting
|
|
|
864 paths in the file system.
|
|
|
865 An initial `~/' expands to your home directory.
|
|
|
866 An initial `~USER/' expands to USER's home directory.
|
|
|
867 See also the function `substitute-in-file-name'.
|
|
20
|
868 */
|
|
|
869 (name, defalt))
|
|
0
|
870 {
|
|
44
|
871 /* This function can call lisp */
|
|
0
|
872 Bufbyte *nm;
|
|
|
873
|
|
|
874 Bufbyte *newdir, *p, *o;
|
|
|
875 int tlen;
|
|
|
876 Bufbyte *target;
|
|
|
877 struct passwd *pw;
|
|
|
878 #ifdef VMS
|
|
|
879 Bufbyte * colon = 0;
|
|
|
880 Bufbyte * close = 0;
|
|
|
881 Bufbyte * slash = 0;
|
|
|
882 Bufbyte * brack = 0;
|
|
|
883 int lbrack = 0, rbrack = 0;
|
|
|
884 int dots = 0;
|
|
|
885 #endif /* VMS */
|
|
|
886 #ifdef DOS_NT
|
|
|
887 /* Demacs 1.1.2 91/10/20 Manabu Higashida */
|
|
|
888 int drive = -1;
|
|
|
889 int relpath = 0;
|
|
|
890 Bufbyte *tmp, *defdir;
|
|
|
891 #endif /* DOS_NT */
|
|
|
892 Lisp_Object handler;
|
|
40
|
893 struct gcpro gcpro1;
|
|
0
|
894
|
|
|
895 CHECK_STRING (name);
|
|
|
896
|
|
|
897 /* If the file name has special constructs in it,
|
|
|
898 call the corresponding file handler. */
|
|
|
899 handler = Ffind_file_name_handler (name, Qexpand_file_name);
|
|
|
900 if (!NILP (handler))
|
|
|
901 return (call3_check_string (handler, Qexpand_file_name, name,
|
|
|
902 defalt));
|
|
|
903
|
|
|
904 /* Use the buffer's default-directory if DEFALT is omitted. */
|
|
|
905 if (NILP (defalt))
|
|
|
906 defalt = current_buffer->directory;
|
|
|
907 if (NILP (defalt)) /* this should be a meaningful error */
|
|
|
908 {
|
|
|
909 /* #### If we had a minibuffer-only frame up then current_buffer
|
|
|
910 is likely to not have a directory setting. We should
|
|
|
911 probably redo things to make sure that current_buffer stays
|
|
|
912 set to something sensible. */
|
|
|
913 if (!preparing_for_armageddon)
|
|
|
914 signal_simple_error ("default-directory is not set",
|
|
|
915 make_buffer (current_buffer));
|
|
|
916 }
|
|
|
917 else
|
|
|
918 CHECK_STRING (defalt);
|
|
|
919
|
|
|
920 if (!NILP (defalt))
|
|
|
921 {
|
|
40
|
922 struct gcpro gcpro1;
|
|
|
923
|
|
|
924 GCPRO1 (defalt); /* might be current_buffer->directory */
|
|
0
|
925 handler = Ffind_file_name_handler (defalt, Qexpand_file_name);
|
|
40
|
926 UNGCPRO;
|
|
0
|
927 if (!NILP (handler))
|
|
|
928 return call3 (handler, Qexpand_file_name, name, defalt);
|
|
|
929 }
|
|
|
930
|
|
|
931 /* Make sure DEFALT is properly expanded.
|
|
|
932 It would be better to do this down below where we actually use
|
|
|
933 defalt. Unfortunately, calling Fexpand_file_name recursively
|
|
|
934 could invoke GC, and the strings might be relocated. This would
|
|
|
935 be annoying because we have pointers into strings lying around
|
|
|
936 that would need adjusting, and people would add new pointers to
|
|
|
937 the code and forget to adjust them, resulting in intermittent bugs.
|
|
|
938 Putting this call here avoids all that crud.
|
|
|
939
|
|
|
940 The EQ test avoids infinite recursion. */
|
|
46
|
941 if (! NILP(defalt) && !EQ (defalt, name)
|
|
0
|
942 /* This saves time in a common case. */
|
|
16
|
943 && ! (XSTRING_LENGTH (defalt) >= 3
|
|
46
|
944 && (IS_DIRECTORY_SEP (XSTRING_BYTE (defalt, 0))
|
|
|
945 || IS_DEVICE_SEP (XSTRING_BYTE (defalt, 1)))))
|
|
0
|
946 {
|
|
|
947 struct gcpro gcpro1;
|
|
|
948
|
|
40
|
949 GCPRO1 (defalt); /* may be current_buffer->directory */
|
|
0
|
950 defalt = Fexpand_file_name (defalt, Qnil);
|
|
|
951 UNGCPRO;
|
|
|
952 }
|
|
|
953
|
|
|
954 #ifdef VMS
|
|
|
955 /* Filenames on VMS are always upper case. */
|
|
|
956 name = Fupcase (name, Fcurrent_buffer ());
|
|
|
957 #endif
|
|
|
958 #ifdef FILE_SYSTEM_CASE
|
|
|
959 name = FILE_SYSTEM_CASE (name);
|
|
|
960 #endif
|
|
|
961
|
|
40
|
962 /* #### dmoore - this is ugly, clean this up. Looks like nm
|
|
|
963 pointing into name should be safe during all of this, though. */
|
|
16
|
964 nm = XSTRING_DATA (name);
|
|
0
|
965
|
|
|
966 #ifdef MSDOS
|
|
|
967 /* First map all backslashes to slashes. */
|
|
|
968 dostounix_filename (nm = strcpy (alloca (strlen (nm) + 1), nm));
|
|
|
969 #endif
|
|
|
970
|
|
|
971 #ifdef DOS_NT
|
|
|
972 /* Now strip drive name. */
|
|
|
973 {
|
|
|
974 Bufbyte *colon = strrchr (nm, ':');
|
|
|
975 if (colon)
|
|
|
976 if (nm == colon)
|
|
|
977 nm++;
|
|
|
978 else
|
|
|
979 {
|
|
|
980 drive = colon[-1];
|
|
|
981 nm = colon + 1;
|
|
|
982 if (!IS_DIRECTORY_SEP (*nm))
|
|
|
983 {
|
|
|
984 defdir = alloca (MAXPATHLEN + 1);
|
|
|
985 relpath = getdefdir (tolower (drive) - 'a' + 1, defdir);
|
|
|
986 }
|
|
|
987 }
|
|
|
988 }
|
|
|
989 #endif /* DOS_NT */
|
|
|
990
|
|
|
991 /* Handle // and /~ in middle of file name
|
|
|
992 by discarding everything through the first / of that sequence. */
|
|
|
993 p = nm;
|
|
|
994 while (*p)
|
|
|
995 {
|
|
|
996 /* Since we know the path is absolute, we can assume that each
|
|
|
997 element starts with a "/". */
|
|
|
998
|
|
|
999 /* "//" anywhere isn't necessarily hairy; we just start afresh
|
|
|
1000 with the second slash. */
|
|
|
1001 if (IS_DIRECTORY_SEP (p[0]) && IS_DIRECTORY_SEP (p[1])
|
|
|
1002 #if defined (APOLLO) || defined (WINDOWSNT)
|
|
|
1003 /* // at start of filename is meaningful on Apollo
|
|
|
1004 and WindowsNT systems */
|
|
|
1005 && nm != p
|
|
|
1006 #endif /* APOLLO || WINDOWSNT */
|
|
|
1007 )
|
|
|
1008 nm = p + 1;
|
|
|
1009
|
|
|
1010 /* "~" is hairy as the start of any path element. */
|
|
|
1011 if (IS_DIRECTORY_SEP (p[0]) && p[1] == '~')
|
|
|
1012 nm = p + 1;
|
|
|
1013
|
|
|
1014 p++;
|
|
|
1015 }
|
|
|
1016
|
|
|
1017 /* If nm is absolute, flush ...// and detect /./ and /../.
|
|
|
1018 If no /./ or /../ we can return right away. */
|
|
|
1019 if (
|
|
|
1020 IS_DIRECTORY_SEP (nm[0])
|
|
|
1021 #ifdef VMS
|
|
|
1022 || strchr (nm, ':')
|
|
|
1023 #endif /* VMS */
|
|
|
1024 )
|
|
|
1025 {
|
|
|
1026 /* If it turns out that the filename we want to return is just a
|
|
|
1027 suffix of FILENAME, we don't need to go through and edit
|
|
|
1028 things; we just need to construct a new string using data
|
|
|
1029 starting at the middle of FILENAME. If we set lose to a
|
|
|
1030 non-zero value, that means we've discovered that we can't do
|
|
|
1031 that cool trick. */
|
|
|
1032 int lose = 0;
|
|
|
1033
|
|
|
1034 p = nm;
|
|
|
1035 while (*p)
|
|
|
1036 {
|
|
|
1037 /* Since we know the path is absolute, we can assume that each
|
|
|
1038 element starts with a "/". */
|
|
|
1039
|
|
|
1040 /* "." and ".." are hairy. */
|
|
|
1041 if (IS_DIRECTORY_SEP (p[0])
|
|
|
1042 && p[1] == '.'
|
|
|
1043 && (IS_DIRECTORY_SEP (p[2])
|
|
|
1044 || p[2] == 0
|
|
|
1045 || (p[2] == '.' && (IS_DIRECTORY_SEP (p[3])
|
|
|
1046 || p[3] == 0))))
|
|
|
1047 lose = 1;
|
|
|
1048 #ifdef VMS
|
|
|
1049 if (p[0] == '\\')
|
|
|
1050 lose = 1;
|
|
|
1051 if (p[0] == '/') {
|
|
|
1052 /* if dev:[dir]/, move nm to / */
|
|
|
1053 if (!slash && p > nm && (brack || colon)) {
|
|
|
1054 nm = (brack ? brack + 1 : colon + 1);
|
|
|
1055 lbrack = rbrack = 0;
|
|
|
1056 brack = 0;
|
|
|
1057 colon = 0;
|
|
|
1058 }
|
|
|
1059 slash = p;
|
|
|
1060 }
|
|
|
1061 if (p[0] == '-')
|
|
|
1062 #ifndef VMS4_4
|
|
|
1063 /* VMS pre V4.4,convert '-'s in filenames. */
|
|
|
1064 if (lbrack == rbrack)
|
|
|
1065 {
|
|
|
1066 if (dots < 2) /* this is to allow negative version numbers */
|
|
|
1067 p[0] = '_';
|
|
|
1068 }
|
|
|
1069 else
|
|
|
1070 #endif /* VMS4_4 */
|
|
|
1071 if (lbrack > rbrack &&
|
|
|
1072 ((p[-1] == '.' || p[-1] == '[' || p[-1] == '<') &&
|
|
|
1073 (p[1] == '.' || p[1] == ']' || p[1] == '>')))
|
|
|
1074 lose = 1;
|
|
|
1075 #ifndef VMS4_4
|
|
|
1076 else
|
|
|
1077 p[0] = '_';
|
|
|
1078 #endif /* VMS4_4 */
|
|
|
1079 /* count open brackets, reset close bracket pointer */
|
|
|
1080 if (p[0] == '[' || p[0] == '<')
|
|
|
1081 lbrack++, brack = 0;
|
|
|
1082 /* count close brackets, set close bracket pointer */
|
|
|
1083 if (p[0] == ']' || p[0] == '>')
|
|
|
1084 rbrack++, brack = p;
|
|
|
1085 /* detect ][ or >< */
|
|
|
1086 if ((p[0] == ']' || p[0] == '>') && (p[1] == '[' || p[1] == '<'))
|
|
|
1087 lose = 1;
|
|
|
1088 if ((p[0] == ':' || p[0] == ']' || p[0] == '>') && p[1] == '~')
|
|
|
1089 nm = p + 1, lose = 1;
|
|
|
1090 if (p[0] == ':' && (colon || slash))
|
|
|
1091 /* if dev1:[dir]dev2:, move nm to dev2: */
|
|
|
1092 if (brack)
|
|
|
1093 {
|
|
|
1094 nm = brack + 1;
|
|
|
1095 brack = 0;
|
|
|
1096 }
|
|
|
1097 /* if /pathname/dev:, move nm to dev: */
|
|
|
1098 else if (slash)
|
|
|
1099 nm = slash + 1;
|
|
|
1100 /* if node::dev:, move colon following dev */
|
|
|
1101 else if (colon && colon[-1] == ':')
|
|
|
1102 colon = p;
|
|
|
1103 /* if dev1:dev2:, move nm to dev2: */
|
|
|
1104 else if (colon && colon[-1] != ':')
|
|
|
1105 {
|
|
|
1106 nm = colon + 1;
|
|
|
1107 colon = 0;
|
|
|
1108 }
|
|
|
1109 if (p[0] == ':' && !colon)
|
|
|
1110 {
|
|
|
1111 if (p[1] == ':')
|
|
|
1112 p++;
|
|
|
1113 colon = p;
|
|
|
1114 }
|
|
|
1115 if (lbrack == rbrack)
|
|
|
1116 if (p[0] == ';')
|
|
|
1117 dots = 2;
|
|
|
1118 else if (p[0] == '.')
|
|
|
1119 dots++;
|
|
|
1120 #endif /* VMS */
|
|
|
1121 p++;
|
|
|
1122 }
|
|
|
1123 if (!lose)
|
|
|
1124 {
|
|
|
1125 #ifdef VMS
|
|
|
1126 if (strchr (nm, '/'))
|
|
|
1127 return build_string (sys_translate_unix (nm));
|
|
|
1128 #endif /* VMS */
|
|
|
1129 #ifndef DOS_NT
|
|
16
|
1130 if (nm == XSTRING_DATA (name))
|
|
0
|
1131 return name;
|
|
|
1132 return build_string ((char *) nm);
|
|
|
1133 #endif /* not DOS_NT */
|
|
|
1134 }
|
|
|
1135 }
|
|
|
1136
|
|
|
1137 /* Now determine directory to start with and put it in newdir */
|
|
|
1138
|
|
|
1139 newdir = 0;
|
|
|
1140
|
|
|
1141 if (nm[0] == '~') /* prefix ~ */
|
|
|
1142 {
|
|
|
1143 if (IS_DIRECTORY_SEP (nm[1])
|
|
|
1144 #ifdef VMS
|
|
|
1145 || nm[1] == ':'
|
|
|
1146 #endif /* VMS */
|
|
|
1147 || nm[1] == 0) /* ~ by itself */
|
|
|
1148 {
|
|
|
1149 if (!(newdir = (Bufbyte *) egetenv ("HOME")))
|
|
|
1150 newdir = (Bufbyte *) "";
|
|
|
1151 #ifdef DOS_NT
|
|
|
1152 /* Problem when expanding "~\" if HOME is not on current drive.
|
|
|
1153 Ulrich Leodolter, Wed Jan 11 10:20:35 1995 */
|
|
|
1154 if (newdir[1] == ':')
|
|
|
1155 drive = newdir[0];
|
|
|
1156 dostounix_filename (newdir);
|
|
|
1157 #endif
|
|
|
1158 nm++;
|
|
|
1159 #ifdef VMS
|
|
|
1160 nm++; /* Don't leave the slash in nm. */
|
|
|
1161 #endif /* VMS */
|
|
|
1162 }
|
|
|
1163 else /* ~user/filename */
|
|
|
1164 {
|
|
|
1165 for (p = nm; *p && (!IS_DIRECTORY_SEP (*p)
|
|
|
1166 #ifdef VMS
|
|
|
1167 && *p != ':'
|
|
|
1168 #endif /* VMS */
|
|
|
1169 ); p++);
|
|
|
1170 o = (Bufbyte *) alloca (p - nm + 1);
|
|
|
1171 memcpy (o, (char *) nm, p - nm);
|
|
|
1172 o [p - nm] = 0;
|
|
|
1173
|
|
|
1174 #ifdef WINDOWSNT
|
|
|
1175 newdir = (unsigned char *) egetenv ("HOME");
|
|
|
1176 dostounix_filename (newdir);
|
|
|
1177 #else /* not WINDOWSNT */
|
|
|
1178 /* Jamie reports that getpwnam() can get wedged by SIGIO/SIGALARM
|
|
|
1179 occurring in it. (It can call select()). */
|
|
|
1180 slow_down_interrupts ();
|
|
|
1181 pw = (struct passwd *) getpwnam ((char *) o + 1);
|
|
|
1182 speed_up_interrupts ();
|
|
|
1183 if (pw)
|
|
|
1184 {
|
|
|
1185 newdir = (Bufbyte *) pw -> pw_dir;
|
|
|
1186 #ifdef VMS
|
|
|
1187 nm = p + 1; /* skip the terminator */
|
|
|
1188 #else
|
|
|
1189 nm = p;
|
|
|
1190 #endif /* VMS */
|
|
|
1191 }
|
|
|
1192 #endif /* not WINDOWSNT */
|
|
|
1193
|
|
|
1194 /* If we don't find a user of that name, leave the name
|
|
|
1195 unchanged; don't move nm forward to p. */
|
|
|
1196 }
|
|
|
1197 }
|
|
|
1198
|
|
|
1199 if (!IS_ANY_SEP (nm[0])
|
|
|
1200 #ifdef VMS
|
|
|
1201 && !strchr (nm, ':')
|
|
|
1202 #endif /* not VMS */
|
|
|
1203 #ifdef DOS_NT
|
|
|
1204 && drive == -1
|
|
|
1205 #endif /* DOS_NT */
|
|
|
1206 && !newdir
|
|
|
1207 && STRINGP (defalt))
|
|
|
1208 {
|
|
16
|
1209 newdir = XSTRING_DATA (defalt);
|
|
0
|
1210 }
|
|
|
1211
|
|
|
1212 #ifdef DOS_NT
|
|
|
1213 if (newdir == 0 && relpath)
|
|
|
1214 newdir = defdir;
|
|
|
1215 #endif /* DOS_NT */
|
|
|
1216 if (newdir != 0)
|
|
|
1217 {
|
|
|
1218 /* Get rid of any slash at the end of newdir. */
|
|
|
1219 int length = strlen ((char *) newdir);
|
|
|
1220 /* Adding `length > 1 &&' makes ~ expand into / when homedir
|
|
|
1221 is the root dir. People disagree about whether that is right.
|
|
|
1222 Anyway, we can't take the risk of this change now. */
|
|
|
1223 #ifdef DOS_NT
|
|
|
1224 if (newdir[1] != ':' && length > 1)
|
|
|
1225 #endif
|
|
|
1226 if (IS_DIRECTORY_SEP (newdir[length - 1]))
|
|
|
1227 {
|
|
|
1228 Bufbyte *temp = (Bufbyte *) alloca (length);
|
|
|
1229 memcpy (temp, newdir, length - 1);
|
|
|
1230 temp[length - 1] = 0;
|
|
|
1231 newdir = temp;
|
|
|
1232 }
|
|
|
1233 tlen = length + 1;
|
|
|
1234 }
|
|
|
1235 else
|
|
|
1236 tlen = 0;
|
|
|
1237
|
|
|
1238 /* Now concatenate the directory and name to new space in the stack frame */
|
|
|
1239 tlen += strlen ((char *) nm) + 1;
|
|
|
1240 #ifdef DOS_NT
|
|
|
1241 /* Add reserved space for drive name. (The Microsoft x86 compiler
|
|
|
1242 produces incorrect code if the following two lines are combined.) */
|
|
|
1243 target = (Bufbyte *) alloca (tlen + 2);
|
|
|
1244 target += 2;
|
|
|
1245 #else /* not DOS_NT */
|
|
|
1246 target = (Bufbyte *) alloca (tlen);
|
|
|
1247 #endif /* not DOS_NT */
|
|
|
1248 *target = 0;
|
|
|
1249
|
|
|
1250 if (newdir)
|
|
|
1251 {
|
|
|
1252 #ifndef VMS
|
|
|
1253 if (nm[0] == 0 || IS_DIRECTORY_SEP (nm[0]))
|
|
|
1254 strcpy ((char *) target, (char *) newdir);
|
|
|
1255 else
|
|
|
1256 #endif
|
|
|
1257 file_name_as_directory ((char *) target, (char *) newdir);
|
|
|
1258 }
|
|
|
1259
|
|
|
1260 strcat ((char *) target, (char *) nm);
|
|
|
1261 #ifdef VMS
|
|
|
1262 if (strchr (target, '/'))
|
|
|
1263 strcpy (target, sys_translate_unix (target));
|
|
|
1264 #endif /* VMS */
|
|
|
1265
|
|
|
1266 /* Now canonicalize by removing /. and /foo/.. if they appear. */
|
|
|
1267
|
|
|
1268 p = target;
|
|
|
1269 o = target;
|
|
|
1270
|
|
|
1271 while (*p)
|
|
|
1272 {
|
|
|
1273 #ifdef VMS
|
|
|
1274 if (*p != ']' && *p != '>' && *p != '-')
|
|
|
1275 {
|
|
|
1276 if (*p == '\\')
|
|
|
1277 p++;
|
|
|
1278 *o++ = *p++;
|
|
|
1279 }
|
|
|
1280 else if ((p[0] == ']' || p[0] == '>') && p[0] == p[1] + 2)
|
|
|
1281 /* brackets are offset from each other by 2 */
|
|
|
1282 {
|
|
|
1283 p += 2;
|
|
|
1284 if (*p != '.' && *p != '-' && o[-1] != '.')
|
|
|
1285 /* convert [foo][bar] to [bar] */
|
|
|
1286 while (o[-1] != '[' && o[-1] != '<')
|
|
|
1287 o--;
|
|
|
1288 else if (*p == '-' && *o != '.')
|
|
|
1289 *--p = '.';
|
|
|
1290 }
|
|
|
1291 else if (p[0] == '-' && o[-1] == '.' &&
|
|
|
1292 (p[1] == '.' || p[1] == ']' || p[1] == '>'))
|
|
|
1293 /* flush .foo.- ; leave - if stopped by '[' or '<' */
|
|
|
1294 {
|
|
|
1295 do
|
|
|
1296 o--;
|
|
|
1297 while (o[-1] != '.' && o[-1] != '[' && o[-1] != '<');
|
|
|
1298 if (p[1] == '.') /* foo.-.bar ==> bar. */
|
|
|
1299 p += 2;
|
|
|
1300 else if (o[-1] == '.') /* '.foo.-]' ==> ']' */
|
|
|
1301 p++, o--;
|
|
|
1302 /* else [foo.-] ==> [-] */
|
|
|
1303 }
|
|
|
1304 else
|
|
|
1305 {
|
|
|
1306 #ifndef VMS4_4
|
|
|
1307 if (*p == '-' &&
|
|
|
1308 o[-1] != '[' && o[-1] != '<' && o[-1] != '.' &&
|
|
|
1309 p[1] != ']' && p[1] != '>' && p[1] != '.')
|
|
|
1310 *p = '_';
|
|
|
1311 #endif /* VMS4_4 */
|
|
|
1312 *o++ = *p++;
|
|
|
1313 }
|
|
|
1314 #else /* not VMS */
|
|
|
1315 if (!IS_DIRECTORY_SEP (*p))
|
|
|
1316 {
|
|
|
1317 *o++ = *p++;
|
|
|
1318 }
|
|
|
1319 else if (IS_DIRECTORY_SEP (p[0]) && IS_DIRECTORY_SEP (p[1])
|
|
|
1320 #if defined (APOLLO) || defined (WINDOWSNT)
|
|
|
1321 /* // at start of filename is meaningful in Apollo
|
|
|
1322 and WindowsNT systems */
|
|
|
1323 && o != target
|
|
|
1324 #endif /* APOLLO */
|
|
|
1325 )
|
|
|
1326 {
|
|
|
1327 o = target;
|
|
|
1328 p++;
|
|
|
1329 }
|
|
|
1330 else if (IS_DIRECTORY_SEP (p[0])
|
|
|
1331 && p[1] == '.'
|
|
|
1332 && (IS_DIRECTORY_SEP (p[2])
|
|
|
1333 || p[2] == 0))
|
|
|
1334 {
|
|
|
1335 /* If "/." is the entire filename, keep the "/". Otherwise,
|
|
|
1336 just delete the whole "/.". */
|
|
|
1337 if (o == target && p[2] == '\0')
|
|
|
1338 *o++ = *p;
|
|
|
1339 p += 2;
|
|
|
1340 }
|
|
|
1341 else if (IS_DIRECTORY_SEP (p[0]) && p[1] == '.' && p[2] == '.'
|
|
|
1342 /* `/../' is the "superroot" on certain file systems. */
|
|
|
1343 && o != target
|
|
|
1344 && (IS_DIRECTORY_SEP (p[3]) || p[3] == 0))
|
|
|
1345 {
|
|
|
1346 while (o != target && (--o) && !IS_DIRECTORY_SEP (*o))
|
|
|
1347 ;
|
|
|
1348 #if defined (APOLLO) || defined (WINDOWSNT)
|
|
|
1349 if (o == target + 1
|
|
|
1350 && IS_DIRECTORY_SEP (o[-1]) && IS_DIRECTORY_SEP (o[0]))
|
|
|
1351 ++o;
|
|
|
1352 else
|
|
|
1353 #endif /* APOLLO || WINDOWSNT */
|
|
|
1354 if (o == target && IS_ANY_SEP (*o))
|
|
|
1355 ++o;
|
|
|
1356 p += 3;
|
|
|
1357 }
|
|
|
1358 else
|
|
|
1359 {
|
|
|
1360 *o++ = *p++;
|
|
|
1361 }
|
|
|
1362 #endif /* not VMS */
|
|
|
1363 }
|
|
|
1364
|
|
|
1365 #ifdef DOS_NT
|
|
|
1366 /* at last, set drive name. */
|
|
|
1367 if (target[1] != ':'
|
|
|
1368 #ifdef WINDOWSNT
|
|
|
1369 /* Allow network paths that look like "\\foo" */
|
|
|
1370 && !(IS_DIRECTORY_SEP (target[0]) && IS_DIRECTORY_SEP (target[1]))
|
|
|
1371 #endif /* WINDOWSNT */
|
|
|
1372 )
|
|
|
1373 {
|
|
|
1374 target -= 2;
|
|
|
1375 target[0] = (drive < 0 ? getdisk () + 'A' : drive);
|
|
|
1376 target[1] = ':';
|
|
|
1377 }
|
|
|
1378 #endif /* DOS_NT */
|
|
|
1379
|
|
|
1380 return make_string (target, o - target);
|
|
|
1381 }
|
|
|
1382
|
|
|
1383 #if 0 /* FSFmacs */
|
|
|
1384 another older version of expand-file-name;
|
|
|
1385 #endif
|
|
|
1386
|
|
|
1387 /* not a full declaration because realpath() is typed differently
|
|
|
1388 on different systems */
|
|
|
1389 extern char *realpath ();
|
|
|
1390
|
|
20
|
1391 DEFUN ("file-truename", Ffile_truename, 1, 2, 0, /*
|
|
0
|
1392 Return the canonical name of the given FILE.
|
|
|
1393 Second arg DEFAULT is directory to start with if FILE is relative
|
|
|
1394 (does not start with slash); if DEFAULT is nil or missing,
|
|
|
1395 the current buffer's value of default-directory is used.
|
|
|
1396 No component of the resulting pathname will be a symbolic link, as
|
|
|
1397 in the realpath() function.
|
|
20
|
1398 */
|
|
|
1399 (filename, defalt))
|
|
0
|
1400 {
|
|
44
|
1401 /* This function can call lisp */
|
|
0
|
1402 struct gcpro gcpro1;
|
|
|
1403 Lisp_Object expanded_name;
|
|
|
1404 Lisp_Object handler;
|
|
|
1405
|
|
|
1406 CHECK_STRING (filename);
|
|
|
1407
|
|
|
1408 expanded_name = Fexpand_file_name (filename, defalt);
|
|
|
1409
|
|
|
1410 if (!STRINGP (expanded_name))
|
|
|
1411 return Qnil;
|
|
|
1412
|
|
|
1413 GCPRO1 (expanded_name);
|
|
|
1414 handler = Ffind_file_name_handler (expanded_name, Qfile_truename);
|
|
|
1415 UNGCPRO;
|
|
|
1416
|
|
|
1417 if (!NILP (handler))
|
|
|
1418 return (call2_check_string (handler, Qfile_truename,
|
|
|
1419 expanded_name));
|
|
|
1420
|
|
|
1421 #ifdef VMS
|
|
|
1422 return (expanded_name);
|
|
|
1423 #else
|
|
|
1424 {
|
|
|
1425 char resolved_path[MAXPATHLEN];
|
|
|
1426 char path[MAXPATHLEN];
|
|
|
1427 char *p = path;
|
|
16
|
1428 int elen = XSTRING_LENGTH (expanded_name);
|
|
0
|
1429
|
|
|
1430 if (elen >= countof (path))
|
|
|
1431 goto toolong;
|
|
|
1432
|
|
16
|
1433 memcpy (path, XSTRING_DATA (expanded_name), elen + 1);
|
|
0
|
1434 /* memset (resolved_path, 0, sizeof (resolved_path)); */
|
|
|
1435
|
|
|
1436 /* Try doing it all at once. */
|
|
|
1437 /* !!#### Does realpath() Mule-encapsulate? */
|
|
|
1438 if (!realpath (path, resolved_path))
|
|
|
1439 {
|
|
|
1440 /* Didn't resolve it -- have to do it one component at a time. */
|
|
|
1441 /* "realpath" is a typically useless, stupid un*x piece of crap.
|
|
|
1442 It claims to return a useful value in the "error" case, but since
|
|
|
1443 there is no indication provided of how far along the pathname
|
|
|
1444 the function went before erring, there is no way to use the
|
|
|
1445 partial result returned. What a piece of junk. */
|
|
|
1446 for (;;)
|
|
|
1447 {
|
|
|
1448 p = (char *) memchr (p + 1, '/', elen - (p + 1 - path));
|
|
|
1449 if (p)
|
|
|
1450 *p = 0;
|
|
|
1451
|
|
|
1452 /* memset (resolved_path, 0, sizeof (resolved_path)); */
|
|
|
1453 if (realpath (path, resolved_path))
|
|
|
1454 {
|
|
|
1455 if (p)
|
|
|
1456 *p = '/';
|
|
|
1457 else
|
|
|
1458 break;
|
|
|
1459
|
|
|
1460 }
|
|
|
1461 else if (errno == ENOENT)
|
|
|
1462 {
|
|
|
1463 /* Failed on this component. Just tack on the rest of
|
|
|
1464 the string and we are done. */
|
|
|
1465 int rlen = strlen (resolved_path);
|
|
|
1466
|
|
|
1467 /* "On failure, it returns NULL, sets errno to indicate
|
|
|
1468 the error, and places in resolved_path the absolute pathname
|
|
|
1469 of the path component which could not be resolved." */
|
|
|
1470 if (p)
|
|
|
1471 {
|
|
|
1472 int plen = elen - (p - path);
|
|
|
1473
|
|
|
1474 if (rlen > 1 && resolved_path[rlen - 1] == '/')
|
|
|
1475 rlen = rlen - 1;
|
|
|
1476
|
|
|
1477 if (plen + rlen + 1 > countof (resolved_path))
|
|
|
1478 goto toolong;
|
|
|
1479
|
|
|
1480 resolved_path[rlen] = '/';
|
|
|
1481 memcpy (resolved_path + rlen + 1, p + 1, plen + 1 - 1);
|
|
|
1482 }
|
|
|
1483 break;
|
|
|
1484 }
|
|
|
1485 else
|
|
|
1486 goto lose;
|
|
|
1487 }
|
|
|
1488 }
|
|
|
1489
|
|
|
1490 {
|
|
|
1491 int rlen = strlen (resolved_path);
|
|
16
|
1492 if (elen > 0 && XSTRING_BYTE (expanded_name, elen - 1) == '/'
|
|
0
|
1493 && !(rlen > 0 && resolved_path[rlen - 1] == '/'))
|
|
|
1494 {
|
|
|
1495 if (rlen + 1 > countof (resolved_path))
|
|
|
1496 goto toolong;
|
|
|
1497 resolved_path[rlen] = '/';
|
|
|
1498 resolved_path[rlen + 1] = 0;
|
|
|
1499 rlen = rlen + 1;
|
|
|
1500 }
|
|
|
1501 return make_string ((Bufbyte *) resolved_path, rlen);
|
|
|
1502 }
|
|
|
1503
|
|
|
1504 toolong:
|
|
|
1505 errno = ENAMETOOLONG;
|
|
|
1506 goto lose;
|
|
|
1507 lose:
|
|
|
1508 report_file_error ("Finding truename", list1 (expanded_name));
|
|
|
1509 }
|
|
|
1510 return Qnil; /* suppress compiler warning */
|
|
|
1511 #endif /* not VMS */
|
|
|
1512 }
|
|
|
1513
|
|
|
1514
|
|
20
|
1515 DEFUN ("substitute-in-file-name", Fsubstitute_in_file_name, 1, 1, 0, /*
|
|
0
|
1516 Substitute environment variables referred to in FILENAME.
|
|
|
1517 `$FOO' where FOO is an environment variable name means to substitute
|
|
|
1518 the value of that variable. The variable name should be terminated
|
|
|
1519 with a character not a letter, digit or underscore; otherwise, enclose
|
|
|
1520 the entire variable name in braces.
|
|
|
1521 If `/~' appears, all of FILENAME through that `/' is discarded.
|
|
|
1522
|
|
|
1523 On VMS, `$' substitution is not done; this function does little and only
|
|
|
1524 duplicates what `expand-file-name' does.
|
|
20
|
1525 */
|
|
|
1526 (string))
|
|
0
|
1527 {
|
|
44
|
1528 /* This function can call lisp */
|
|
0
|
1529 Bufbyte *nm;
|
|
|
1530
|
|
|
1531 Bufbyte *s, *p, *o, *x, *endp;
|
|
|
1532 Bufbyte *target = 0;
|
|
|
1533 int total = 0;
|
|
|
1534 int substituted = 0;
|
|
|
1535 Bufbyte *xnm;
|
|
|
1536 Lisp_Object handler;
|
|
|
1537
|
|
|
1538 CHECK_STRING (string);
|
|
|
1539
|
|
|
1540 /* If the file name has special constructs in it,
|
|
|
1541 call the corresponding file handler. */
|
|
|
1542 handler = Ffind_file_name_handler (string, Qsubstitute_in_file_name);
|
|
|
1543 if (!NILP (handler))
|
|
40
|
1544 return (call2_check_string_or_nil (handler, Qsubstitute_in_file_name,
|
|
|
1545 string));
|
|
0
|
1546
|
|
16
|
1547 nm = XSTRING_DATA (string);
|
|
0
|
1548 #ifdef MSDOS
|
|
|
1549 dostounix_filename (nm = strcpy (alloca (strlen (nm) + 1), nm));
|
|
16
|
1550 substituted = !strcmp (nm, XSTRING_DATA (string));
|
|
0
|
1551 #endif
|
|
16
|
1552 endp = nm + XSTRING_LENGTH (string);
|
|
0
|
1553
|
|
|
1554 /* If /~ or // appears, discard everything through first slash. */
|
|
|
1555
|
|
|
1556 for (p = nm; p != endp; p++)
|
|
|
1557 {
|
|
|
1558 if ((p[0] == '~' ||
|
|
|
1559 #ifdef APOLLO
|
|
|
1560 /* // at start of file name is meaningful in Apollo system */
|
|
|
1561 (p[0] == '/' && p - 1 != nm)
|
|
|
1562 #else /* not APOLLO */
|
|
|
1563 #ifdef WINDOWSNT
|
|
|
1564 (IS_DIRECTORY_SEP (p[0]) && p - 1 != nm)
|
|
|
1565 #else /* not WINDOWSNT */
|
|
|
1566 p[0] == '/'
|
|
|
1567 #endif /* not WINDOWSNT */
|
|
|
1568 #endif /* not APOLLO */
|
|
|
1569 )
|
|
|
1570 && p != nm
|
|
|
1571 && (0
|
|
|
1572 #ifdef VMS
|
|
|
1573 || p[-1] == ':' || p[-1] == ']' || p[-1] == '>'
|
|
|
1574 #endif /* VMS */
|
|
|
1575 || IS_DIRECTORY_SEP (p[-1])))
|
|
|
1576 {
|
|
|
1577 nm = p;
|
|
|
1578 substituted = 1;
|
|
|
1579 }
|
|
|
1580 #ifdef DOS_NT
|
|
|
1581 if (p[0] && p[1] == ':')
|
|
|
1582 {
|
|
|
1583 nm = p;
|
|
|
1584 substituted = 1;
|
|
|
1585 }
|
|
|
1586 #endif /* DOS_NT */
|
|
|
1587 }
|
|
|
1588
|
|
|
1589 #ifdef VMS
|
|
|
1590 return build_string (nm);
|
|
|
1591 #else
|
|
|
1592
|
|
|
1593 /* See if any variables are substituted into the string
|
|
|
1594 and find the total length of their values in `total' */
|
|
|
1595
|
|
|
1596 for (p = nm; p != endp;)
|
|
|
1597 if (*p != '$')
|
|
|
1598 p++;
|
|
|
1599 else
|
|
|
1600 {
|
|
|
1601 p++;
|
|
|
1602 if (p == endp)
|
|
|
1603 goto badsubst;
|
|
|
1604 else if (*p == '$')
|
|
|
1605 {
|
|
|
1606 /* "$$" means a single "$" */
|
|
|
1607 p++;
|
|
|
1608 total -= 1;
|
|
|
1609 substituted = 1;
|
|
|
1610 continue;
|
|
|
1611 }
|
|
|
1612 else if (*p == '{')
|
|
|
1613 {
|
|
|
1614 o = ++p;
|
|
|
1615 while (p != endp && *p != '}') p++;
|
|
|
1616 if (*p != '}') goto missingclose;
|
|
|
1617 s = p;
|
|
|
1618 }
|
|
|
1619 else
|
|
|
1620 {
|
|
|
1621 o = p;
|
|
|
1622 while (p != endp && (isalnum (*p) || *p == '_')) p++;
|
|
|
1623 s = p;
|
|
|
1624 }
|
|
|
1625
|
|
|
1626 /* Copy out the variable name */
|
|
|
1627 target = (Bufbyte *) alloca (s - o + 1);
|
|
|
1628 strncpy ((char *) target, (char *) o, s - o);
|
|
|
1629 target[s - o] = 0;
|
|
|
1630 #ifdef DOS_NT
|
|
|
1631 strupr (target); /* $home == $HOME etc. */
|
|
|
1632 #endif /* DOS_NT */
|
|
|
1633
|
|
|
1634 /* Get variable value */
|
|
|
1635 o = (Bufbyte *) egetenv ((char *) target);
|
|
|
1636 if (!o) goto badvar;
|
|
|
1637 total += strlen ((char *) o);
|
|
|
1638 substituted = 1;
|
|
|
1639 }
|
|
|
1640
|
|
|
1641 if (!substituted)
|
|
|
1642 return string;
|
|
|
1643
|
|
|
1644 /* If substitution required, recopy the string and do it */
|
|
|
1645 /* Make space in stack frame for the new copy */
|
|
16
|
1646 xnm = (Bufbyte *) alloca (XSTRING_LENGTH (string) + total + 1);
|
|
0
|
1647 x = xnm;
|
|
|
1648
|
|
|
1649 /* Copy the rest of the name through, replacing $ constructs with values */
|
|
|
1650 for (p = nm; *p;)
|
|
|
1651 if (*p != '$')
|
|
|
1652 *x++ = *p++;
|
|
|
1653 else
|
|
|
1654 {
|
|
|
1655 p++;
|
|
|
1656 if (p == endp)
|
|
|
1657 goto badsubst;
|
|
|
1658 else if (*p == '$')
|
|
|
1659 {
|
|
|
1660 *x++ = *p++;
|
|
|
1661 continue;
|
|
|
1662 }
|
|
|
1663 else if (*p == '{')
|
|
|
1664 {
|
|
|
1665 o = ++p;
|
|
|
1666 while (p != endp && *p != '}') p++;
|
|
|
1667 if (*p != '}') goto missingclose;
|
|
|
1668 s = p++;
|
|
|
1669 }
|
|
|
1670 else
|
|
|
1671 {
|
|
|
1672 o = p;
|
|
|
1673 while (p != endp && (isalnum (*p) || *p == '_')) p++;
|
|
|
1674 s = p;
|
|
|
1675 }
|
|
|
1676
|
|
|
1677 /* Copy out the variable name */
|
|
|
1678 target = (Bufbyte *) alloca (s - o + 1);
|
|
|
1679 strncpy ((char *) target, (char *) o, s - o);
|
|
|
1680 target[s - o] = 0;
|
|
|
1681 #ifdef DOS_NT
|
|
|
1682 strupr (target); /* $home == $HOME etc. */
|
|
|
1683 #endif /* DOS_NT */
|
|
|
1684
|
|
|
1685 /* Get variable value */
|
|
|
1686 o = (Bufbyte *) egetenv ((char *) target);
|
|
|
1687 if (!o)
|
|
|
1688 goto badvar;
|
|
|
1689
|
|
|
1690 strcpy ((char *) x, (char *) o);
|
|
|
1691 x += strlen ((char *) o);
|
|
|
1692 }
|
|
|
1693
|
|
|
1694 *x = 0;
|
|
|
1695
|
|
|
1696 /* If /~ or // appears, discard everything through first slash. */
|
|
|
1697
|
|
|
1698 for (p = xnm; p != x; p++)
|
|
|
1699 if ((p[0] == '~'
|
|
|
1700 #ifdef APOLLO
|
|
|
1701 /* // at start of file name is meaningful in Apollo system */
|
|
|
1702 || (p[0] == '/' && p - 1 != xnm)
|
|
|
1703 #else /* not APOLLO */
|
|
|
1704 #ifdef WINDOWSNT
|
|
|
1705 || (IS_DIRECTORY_SEP (p[0]) && p - 1 != xnm)
|
|
|
1706 #else /* not WINDOWSNT */
|
|
|
1707 || p[0] == '/'
|
|
|
1708 #endif /* not WINDOWSNT */
|
|
|
1709 #endif /* not APOLLO */
|
|
|
1710 )
|
|
|
1711 /* don't do p[-1] if that would go off the beginning --jwz */
|
|
|
1712 && p != nm && p > xnm && IS_DIRECTORY_SEP (p[-1]))
|
|
|
1713 xnm = p;
|
|
|
1714 #ifdef DOS_NT
|
|
|
1715 else if (p[0] && p[1] == ':')
|
|
|
1716 xnm = p;
|
|
|
1717 #endif
|
|
|
1718
|
|
|
1719 return make_string (xnm, x - xnm);
|
|
|
1720
|
|
|
1721 badsubst:
|
|
|
1722 error ("Bad format environment-variable substitution");
|
|
|
1723 missingclose:
|
|
|
1724 error ("Missing \"}\" in environment-variable substitution");
|
|
|
1725 badvar:
|
|
|
1726 error ("Substituting nonexistent environment variable \"%s\"",
|
|
|
1727 target);
|
|
|
1728
|
|
|
1729 /* NOTREACHED */
|
|
|
1730 return Qnil; /* suppress compiler warning */
|
|
|
1731 #endif /* not VMS */
|
|
|
1732 }
|
|
|
1733
|
|
|
1734 /* (directory-file-name (expand-file-name FOO)) */
|
|
|
1735
|
|
|
1736 Lisp_Object
|
|
|
1737 expand_and_dir_to_file (Lisp_Object filename, Lisp_Object defdir)
|
|
|
1738 {
|
|
44
|
1739 /* This function can call lisp */
|
|
0
|
1740 Lisp_Object abspath;
|
|
|
1741 struct gcpro gcpro1;
|
|
|
1742
|
|
|
1743 abspath = Fexpand_file_name (filename, defdir);
|
|
44
|
1744 GCPRO1 (abspath);
|
|
0
|
1745 #ifdef VMS
|
|
|
1746 {
|
|
|
1747 Bufbyte c =
|
|
16
|
1748 XSTRING_BYTE (abspath, XSTRING_LENGTH (abspath) - 1);
|
|
0
|
1749 if (c == ':' || c == ']' || c == '>')
|
|
|
1750 abspath = Fdirectory_file_name (abspath);
|
|
|
1751 }
|
|
|
1752 #else
|
|
|
1753 /* Remove final slash, if any (unless path is root).
|
|
|
1754 stat behaves differently depending! */
|
|
16
|
1755 if (XSTRING_LENGTH (abspath) > 1
|
|
|
1756 && IS_DIRECTORY_SEP (XSTRING_BYTE (abspath, XSTRING_LENGTH (abspath) - 1))
|
|
|
1757 && !IS_DEVICE_SEP (XSTRING_BYTE (abspath, XSTRING_LENGTH (abspath) - 2)))
|
|
0
|
1758 /* We cannot take shortcuts; they might be wrong for magic file names. */
|
|
|
1759 abspath = Fdirectory_file_name (abspath);
|
|
|
1760 #endif
|
|
|
1761 UNGCPRO;
|
|
|
1762 return abspath;
|
|
|
1763 }
|
|
|
1764
|
|
|
1765 /* Signal an error if the file ABSNAME already exists.
|
|
|
1766 If INTERACTIVE is nonzero, ask the user whether to proceed,
|
|
|
1767 and bypass the error if the user says to go ahead.
|
|
|
1768 QUERYSTRING is a name for the action that is being considered
|
|
|
1769 to alter the file.
|
|
|
1770 *STATPTR is used to store the stat information if the file exists.
|
|
|
1771 If the file does not exist, STATPTR->st_mode is set to 0. */
|
|
|
1772
|
|
|
1773 static void
|
|
|
1774 barf_or_query_if_file_exists (Lisp_Object absname, CONST char *querystring,
|
|
|
1775 int interactive, struct stat *statptr)
|
|
|
1776 {
|
|
44
|
1777 /* This function can call lisp */
|
|
0
|
1778 struct stat statbuf;
|
|
|
1779
|
|
|
1780 /* stat is a good way to tell whether the file exists,
|
|
|
1781 regardless of what access permissions it has. */
|
|
16
|
1782 if (stat ((char *) XSTRING_DATA (absname), &statbuf) >= 0)
|
|
0
|
1783 {
|
|
|
1784 Lisp_Object tem;
|
|
44
|
1785
|
|
0
|
1786 if (interactive)
|
|
44
|
1787 {
|
|
|
1788 Lisp_Object prompt;
|
|
|
1789 struct gcpro gcpro1;
|
|
|
1790
|
|
|
1791 prompt = emacs_doprnt_string_c
|
|
0
|
1792 ((CONST Bufbyte *) GETTEXT ("File %s already exists; %s anyway? "),
|
|
16
|
1793 Qnil, -1, XSTRING_DATA (absname),
|
|
44
|
1794 GETTEXT (querystring));
|
|
|
1795
|
|
|
1796 GCPRO1 (prompt);
|
|
|
1797 tem = call1 (Qyes_or_no_p, prompt);
|
|
|
1798 UNGCPRO;
|
|
|
1799 }
|
|
0
|
1800 else
|
|
|
1801 tem = Qnil;
|
|
44
|
1802
|
|
0
|
1803 if (NILP (tem))
|
|
|
1804 Fsignal (Qfile_already_exists,
|
|
|
1805 list2 (build_translated_string ("File already exists"),
|
|
|
1806 absname));
|
|
|
1807 if (statptr)
|
|
|
1808 *statptr = statbuf;
|
|
|
1809 }
|
|
|
1810 else
|
|
|
1811 {
|
|
|
1812 if (statptr)
|
|
|
1813 statptr->st_mode = 0;
|
|
|
1814 }
|
|
|
1815 return;
|
|
|
1816 }
|
|
|
1817
|
|
20
|
1818 DEFUN ("copy-file", Fcopy_file, 2, 4,
|
|
|
1819 "fCopy file: \nFCopy %s to file: \np\nP", /*
|
|
0
|
1820 Copy FILE to NEWNAME. Both args must be strings.
|
|
|
1821 Signals a `file-already-exists' error if file NEWNAME already exists,
|
|
|
1822 unless a third argument OK-IF-ALREADY-EXISTS is supplied and non-nil.
|
|
|
1823 A number as third arg means request confirmation if NEWNAME already exists.
|
|
|
1824 This is what happens in interactive use with M-x.
|
|
|
1825 Fourth arg KEEP-TIME non-nil means give the new file the same
|
|
|
1826 last-modified time as the old one. (This works on only some systems.)
|
|
|
1827 A prefix arg makes KEEP-TIME non-nil.
|
|
20
|
1828 */
|
|
|
1829 (filename, newname, ok_if_already_exists, keep_time))
|
|
0
|
1830 {
|
|
44
|
1831 /* This function can call lisp */
|
|
0
|
1832 int ifd, ofd, n;
|
|
|
1833 char buf[16 * 1024];
|
|
|
1834 struct stat st, out_st;
|
|
|
1835 Lisp_Object handler;
|
|
|
1836 int speccount = specpdl_depth ();
|
|
|
1837 struct gcpro gcpro1, gcpro2;
|
|
|
1838 /* Lisp_Object args[6]; */
|
|
|
1839 int input_file_statable_p;
|
|
|
1840
|
|
|
1841 GCPRO2 (filename, newname);
|
|
|
1842 CHECK_STRING (filename);
|
|
|
1843 CHECK_STRING (newname);
|
|
|
1844 filename = Fexpand_file_name (filename, Qnil);
|
|
|
1845 newname = Fexpand_file_name (newname, Qnil);
|
|
|
1846
|
|
|
1847 /* If the input file name has special constructs in it,
|
|
|
1848 call the corresponding file handler. */
|
|
|
1849 handler = Ffind_file_name_handler (filename, Qcopy_file);
|
|
|
1850 /* Likewise for output file name. */
|
|
|
1851 if (NILP (handler))
|
|
|
1852 handler = Ffind_file_name_handler (newname, Qcopy_file);
|
|
|
1853 if (!NILP (handler))
|
|
|
1854 {
|
|
|
1855 UNGCPRO;
|
|
|
1856 return call5 (handler, Qcopy_file, filename, newname,
|
|
16
|
1857 ok_if_already_exists, keep_time);
|
|
0
|
1858 }
|
|
|
1859
|
|
|
1860 /* When second argument is a directory, copy the file into it.
|
|
|
1861 (copy-file "foo" "bar/") == (copy-file "foo" "bar/foo")
|
|
|
1862 */
|
|
|
1863 if (!NILP (Ffile_directory_p (newname)))
|
|
|
1864 {
|
|
|
1865 Lisp_Object args[3];
|
|
|
1866 struct gcpro ngcpro1;
|
|
|
1867 int i = 1;
|
|
|
1868
|
|
|
1869 args[0] = newname;
|
|
|
1870 args[1] = Qnil; args[2] = Qnil;
|
|
|
1871 NGCPRO1 (*args);
|
|
|
1872 ngcpro1.nvars = 3;
|
|
16
|
1873 if (XSTRING_BYTE (newname, XSTRING_LENGTH (newname) - 1) != '/')
|
|
0
|
1874 args[i++] = build_string ("/");
|
|
|
1875 args[i++] = Ffile_name_nondirectory (filename);
|
|
|
1876 newname = Fconcat (i, args);
|
|
|
1877 NUNGCPRO;
|
|
|
1878 }
|
|
|
1879
|
|
|
1880 if (NILP (ok_if_already_exists)
|
|
|
1881 || INTP (ok_if_already_exists))
|
|
|
1882 barf_or_query_if_file_exists (newname, "copy to it",
|
|
|
1883 INTP (ok_if_already_exists), &out_st);
|
|
16
|
1884 else if (stat ((CONST char *) XSTRING_DATA (newname), &out_st) < 0)
|
|
0
|
1885 out_st.st_mode = 0;
|
|
|
1886
|
|
16
|
1887 ifd = open ((char *) XSTRING_DATA (filename), O_RDONLY, 0);
|
|
0
|
1888 if (ifd < 0)
|
|
|
1889 report_file_error ("Opening input file", Fcons (filename, Qnil));
|
|
|
1890
|
|
|
1891 record_unwind_protect (close_file_unwind, make_int (ifd));
|
|
|
1892
|
|
|
1893 /* We can only copy regular files and symbolic links. Other files are not
|
|
|
1894 copyable by us. */
|
|
|
1895 input_file_statable_p = (fstat (ifd, &st) >= 0);
|
|
|
1896
|
|
|
1897 #ifndef DOS_NT
|
|
|
1898 if (out_st.st_mode != 0
|
|
|
1899 && st.st_dev == out_st.st_dev && st.st_ino == out_st.st_ino)
|
|
|
1900 {
|
|
|
1901 errno = 0;
|
|
|
1902 report_file_error ("Input and output files are the same",
|
|
|
1903 Fcons (filename, Fcons (newname, Qnil)));
|
|
|
1904 }
|
|
|
1905 #endif
|
|
|
1906
|
|
|
1907 #if defined (S_ISREG) && defined (S_ISLNK)
|
|
|
1908 if (input_file_statable_p)
|
|
|
1909 {
|
|
|
1910 if (!(S_ISREG (st.st_mode))
|
|
|
1911 /* XEmacs: have to allow S_ISCHR in order to copy /dev/null */
|
|
|
1912 #ifdef S_ISCHR
|
|
|
1913 && !(S_ISCHR (st.st_mode))
|
|
|
1914 #endif
|
|
|
1915 && !(S_ISLNK (st.st_mode)))
|
|
|
1916 {
|
|
|
1917 #if defined (EISDIR)
|
|
|
1918 /* Get a better looking error message. */
|
|
|
1919 errno = EISDIR;
|
|
|
1920 #endif /* EISDIR */
|
|
|
1921 report_file_error ("Non-regular file", Fcons (filename, Qnil));
|
|
|
1922 }
|
|
|
1923 }
|
|
|
1924 #endif /* S_ISREG && S_ISLNK */
|
|
|
1925
|
|
|
1926 #ifdef VMS
|
|
|
1927 /* Create the copy file with the same record format as the input file */
|
|
16
|
1928 ofd = sys_creat ((char *) XSTRING_DATA (newname), 0666, ifd);
|
|
0
|
1929 #else
|
|
|
1930 #ifdef MSDOS
|
|
|
1931 /* System's default file type was set to binary by _fmode in emacs.c. */
|
|
16
|
1932 ofd = creat ((char *) XSTRING_DATA (newname), S_IREAD | S_IWRITE);
|
|
0
|
1933 #else /* not MSDOS */
|
|
16
|
1934 ofd = creat ((char *) XSTRING_DATA (newname), 0666);
|
|
0
|
1935 #endif /* not MSDOS */
|
|
|
1936 #endif /* VMS */
|
|
|
1937 if (ofd < 0)
|
|
|
1938 report_file_error ("Opening output file", list1 (newname));
|
|
|
1939
|
|
|
1940 {
|
|
|
1941 Lisp_Object ofd_locative = noseeum_cons (make_int (ofd), Qnil);
|
|
|
1942
|
|
|
1943 record_unwind_protect (close_file_unwind, ofd_locative);
|
|
|
1944
|
|
|
1945 while ((n = read_allowing_quit (ifd, buf, sizeof (buf))) > 0)
|
|
|
1946 {
|
|
|
1947 if (write_allowing_quit (ofd, buf, n) != n)
|
|
|
1948 report_file_error ("I/O error", list1 (newname));
|
|
|
1949 }
|
|
|
1950
|
|
|
1951 /* Closing the output clobbers the file times on some systems. */
|
|
|
1952 if (close (ofd) < 0)
|
|
|
1953 report_file_error ("I/O error", Fcons (newname, Qnil));
|
|
|
1954
|
|
|
1955 if (input_file_statable_p)
|
|
|
1956 {
|
|
16
|
1957 if (!NILP (keep_time))
|
|
0
|
1958 {
|
|
|
1959 EMACS_TIME atime, mtime;
|
|
|
1960 EMACS_SET_SECS_USECS (atime, st.st_atime, 0);
|
|
|
1961 EMACS_SET_SECS_USECS (mtime, st.st_mtime, 0);
|
|
16
|
1962 if (set_file_times ((char *) XSTRING_DATA (newname), atime,
|
|
0
|
1963 mtime))
|
|
|
1964 report_file_error ("I/O error", Fcons (newname, Qnil));
|
|
|
1965 }
|
|
|
1966 #ifndef MSDOS
|
|
16
|
1967 chmod ((CONST char *) XSTRING_DATA (newname),
|
|
0
|
1968 st.st_mode & 07777);
|
|
|
1969 #else /* MSDOS */
|
|
|
1970 #if defined (__DJGPP__) && __DJGPP__ > 1
|
|
|
1971 /* In DJGPP v2.0 and later, fstat usually returns true file mode bits,
|
|
|
1972 and if it can't, it tells so. Otherwise, under MSDOS we usually
|
|
|
1973 get only the READ bit, which will make the copied file read-only,
|
|
|
1974 so it's better not to chmod at all. */
|
|
|
1975 if ((_djstat_flags & _STFAIL_WRITEBIT) == 0)
|
|
16
|
1976 chmod ((char *) XSTRING_DATA (newname), st.st_mode & 07777);
|
|
0
|
1977 #endif /* DJGPP version 2 or newer */
|
|
|
1978 #endif /* MSDOS */
|
|
|
1979 }
|
|
|
1980
|
|
|
1981 /* We'll close it by hand */
|
|
|
1982 XCAR (ofd_locative) = Qnil;
|
|
|
1983
|
|
|
1984 /* Close ifd */
|
|
|
1985 unbind_to (speccount, Qnil);
|
|
|
1986 }
|
|
|
1987
|
|
|
1988 UNGCPRO;
|
|
|
1989 return Qnil;
|
|
|
1990 }
|
|
|
1991
|
|
20
|
1992 DEFUN ("make-directory-internal", Fmake_directory_internal, 1, 1, 0, /*
|
|
0
|
1993 Create a directory. One argument, a file name string.
|
|
20
|
1994 */
|
|
|
1995 (dirname))
|
|
0
|
1996 {
|
|
44
|
1997 /* This function can call lisp */
|
|
0
|
1998 char dir [MAXPATHLEN];
|
|
|
1999 Lisp_Object handler;
|
|
|
2000 struct gcpro gcpro1;
|
|
|
2001
|
|
|
2002 CHECK_STRING (dirname);
|
|
|
2003 dirname = Fexpand_file_name (dirname, Qnil);
|
|
|
2004
|
|
40
|
2005 GCPRO1 (dirname);
|
|
0
|
2006 handler = Ffind_file_name_handler (dirname, Qmake_directory_internal);
|
|
|
2007 UNGCPRO;
|
|
|
2008 if (!NILP (handler))
|
|
40
|
2009 return (call2 (handler, Qmake_directory_internal, dirname));
|
|
0
|
2010
|
|
16
|
2011 if (XSTRING_LENGTH (dirname) > (sizeof (dir) - 1))
|
|
0
|
2012 {
|
|
|
2013 return Fsignal (Qfile_error,
|
|
|
2014 list3 (build_translated_string ("Creating directory"),
|
|
|
2015 build_translated_string ("pathame too long"),
|
|
|
2016 dirname));
|
|
|
2017 }
|
|
16
|
2018 strncpy (dir, (char *) XSTRING_DATA (dirname),
|
|
|
2019 XSTRING_LENGTH (dirname) + 1);
|
|
0
|
2020
|
|
|
2021 #ifndef VMS
|
|
16
|
2022 if (dir [XSTRING_LENGTH (dirname) - 1] == '/')
|
|
|
2023 dir [XSTRING_LENGTH (dirname) - 1] = 0;
|
|
0
|
2024 #endif
|
|
|
2025
|
|
|
2026 #ifdef WINDOWSNT
|
|
|
2027 if (mkdir (dir) != 0)
|
|
|
2028 #else
|
|
|
2029 if (mkdir (dir, 0777) != 0)
|
|
|
2030 #endif
|
|
|
2031 report_file_error ("Creating directory", list1 (dirname));
|
|
|
2032
|
|
|
2033 return Qnil;
|
|
|
2034 }
|
|
|
2035
|
|
20
|
2036 DEFUN ("delete-directory", Fdelete_directory, 1, 1, "FDelete directory: ", /*
|
|
0
|
2037 Delete a directory. One argument, a file name or directory name string.
|
|
20
|
2038 */
|
|
|
2039 (dirname))
|
|
0
|
2040 {
|
|
44
|
2041 /* This function can call lisp */
|
|
0
|
2042 Lisp_Object handler;
|
|
|
2043 struct gcpro gcpro1;
|
|
|
2044
|
|
40
|
2045 CHECK_STRING (dirname);
|
|
|
2046
|
|
0
|
2047 GCPRO1 (dirname);
|
|
40
|
2048 dirname = Fexpand_file_name (dirname, Qnil);
|
|
|
2049 dirname = Fdirectory_file_name (dirname);
|
|
0
|
2050
|
|
|
2051 handler = Ffind_file_name_handler (dirname, Qdelete_directory);
|
|
|
2052 UNGCPRO;
|
|
|
2053 if (!NILP (handler))
|
|
|
2054 return (call2 (handler, Qdelete_directory, dirname));
|
|
|
2055
|
|
16
|
2056 if (rmdir ((char *) XSTRING_DATA (dirname)) != 0)
|
|
0
|
2057 report_file_error ("Removing directory", list1 (dirname));
|
|
|
2058
|
|
|
2059 return Qnil;
|
|
|
2060 }
|
|
|
2061
|
|
20
|
2062 DEFUN ("delete-file", Fdelete_file, 1, 1, "fDelete file: ", /*
|
|
0
|
2063 Delete specified file. One argument, a file name string.
|
|
|
2064 If file has multiple names, it continues to exist with the other names.
|
|
20
|
2065 */
|
|
|
2066 (filename))
|
|
0
|
2067 {
|
|
44
|
2068 /* This function can call lisp */
|
|
0
|
2069 Lisp_Object handler;
|
|
|
2070 struct gcpro gcpro1;
|
|
|
2071
|
|
|
2072 CHECK_STRING (filename);
|
|
|
2073 filename = Fexpand_file_name (filename, Qnil);
|
|
|
2074
|
|
40
|
2075 GCPRO1 (filename);
|
|
0
|
2076 handler = Ffind_file_name_handler (filename, Qdelete_file);
|
|
|
2077 UNGCPRO;
|
|
|
2078 if (!NILP (handler))
|
|
|
2079 return call2 (handler, Qdelete_file, filename);
|
|
|
2080
|
|
16
|
2081 if (0 > unlink ((char *) XSTRING_DATA (filename)))
|
|
0
|
2082 report_file_error ("Removing old name", list1 (filename));
|
|
|
2083 return Qnil;
|
|
|
2084 }
|
|
|
2085
|
|
|
2086 static Lisp_Object
|
|
|
2087 internal_delete_file_1 (Lisp_Object ignore, Lisp_Object ignore2)
|
|
|
2088 {
|
|
|
2089 return Qt;
|
|
|
2090 }
|
|
|
2091
|
|
|
2092 /* Delete file FILENAME, returning 1 if successful and 0 if failed. */
|
|
|
2093
|
|
|
2094 int
|
|
|
2095 internal_delete_file (Lisp_Object filename)
|
|
|
2096 {
|
|
44
|
2097 /* This function can call lisp */
|
|
0
|
2098 return NILP (condition_case_1 (Qt, Fdelete_file, filename,
|
|
|
2099 internal_delete_file_1, Qnil));
|
|
|
2100 }
|
|
|
2101
|
|
20
|
2102 DEFUN ("rename-file", Frename_file, 2, 3,
|
|
|
2103 "fRename file: \nFRename %s to file: \np", /*
|
|
0
|
2104 Rename FILE as NEWNAME. Both args strings.
|
|
|
2105 If file has names other than FILE, it continues to have those names.
|
|
|
2106 Signals a `file-already-exists' error if a file NEWNAME already exists
|
|
|
2107 unless optional third argument OK-IF-ALREADY-EXISTS is non-nil.
|
|
|
2108 A number as third arg means request confirmation if NEWNAME already exists.
|
|
|
2109 This is what happens in interactive use with M-x.
|
|
20
|
2110 */
|
|
|
2111 (filename, newname, ok_if_already_exists))
|
|
0
|
2112 {
|
|
44
|
2113 /* This function can call lisp */
|
|
0
|
2114 Lisp_Object handler;
|
|
|
2115 struct gcpro gcpro1, gcpro2;
|
|
|
2116
|
|
|
2117 GCPRO2 (filename, newname);
|
|
|
2118 CHECK_STRING (filename);
|
|
|
2119 CHECK_STRING (newname);
|
|
|
2120 filename = Fexpand_file_name (filename, Qnil);
|
|
|
2121 newname = Fexpand_file_name (newname, Qnil);
|
|
|
2122
|
|
|
2123 /* If the file name has special constructs in it,
|
|
|
2124 call the corresponding file handler. */
|
|
|
2125 handler = Ffind_file_name_handler (filename, Qrename_file);
|
|
|
2126 if (NILP (handler))
|
|
|
2127 handler = Ffind_file_name_handler (newname, Qrename_file);
|
|
|
2128 if (!NILP (handler))
|
|
|
2129 {
|
|
|
2130 UNGCPRO;
|
|
|
2131 return call4 (handler, Qrename_file,
|
|
|
2132 filename, newname, ok_if_already_exists);
|
|
|
2133 }
|
|
|
2134
|
|
|
2135 /* When second argument is a directory, rename the file into it.
|
|
|
2136 (rename-file "foo" "bar/") == (rename-file "foo" "bar/foo")
|
|
|
2137 */
|
|
|
2138 if (!NILP (Ffile_directory_p (newname)))
|
|
|
2139 {
|
|
|
2140 Lisp_Object args[3];
|
|
|
2141 struct gcpro ngcpro1;
|
|
|
2142 int i = 1;
|
|
|
2143
|
|
|
2144 args[0] = newname;
|
|
|
2145 args[1] = Qnil; args[2] = Qnil;
|
|
|
2146 NGCPRO1 (*args);
|
|
|
2147 ngcpro1.nvars = 3;
|
|
16
|
2148 if (XSTRING_BYTE (newname, XSTRING_LENGTH (newname) - 1) != '/')
|
|
0
|
2149 args[i++] = build_string ("/");
|
|
|
2150 args[i++] = Ffile_name_nondirectory (filename);
|
|
|
2151 newname = Fconcat (i, args);
|
|
|
2152 NUNGCPRO;
|
|
|
2153 }
|
|
|
2154
|
|
|
2155 if (NILP (ok_if_already_exists)
|
|
|
2156 || INTP (ok_if_already_exists))
|
|
|
2157 barf_or_query_if_file_exists (newname, "rename to it",
|
|
|
2158 INTP (ok_if_already_exists), 0);
|
|
|
2159
|
|
|
2160 #ifdef WINDOWSNT
|
|
|
2161 if (!MoveFile (XSTRING (filename)->data, XSTRING (newname)->data))
|
|
|
2162 #else /* not WINDOWSNT */
|
|
|
2163 /* FSFmacs only calls rename() here under BSD 4.1, and calls
|
|
|
2164 link() and unlink() otherwise, but that's bogus. Sometimes
|
|
|
2165 rename() succeeds where link()/unlink() fail, and we have
|
|
|
2166 configure check for rename() and emulate using link()/unlink()
|
|
|
2167 if necessary. */
|
|
16
|
2168 if (0 > rename ((char *) XSTRING_DATA (filename),
|
|
|
2169 (char *) XSTRING_DATA (newname)))
|
|
0
|
2170 #endif /* not WINDOWSNT */
|
|
|
2171 {
|
|
|
2172 #ifdef WINDOWSNT
|
|
|
2173 /* Why two? And why doesn't MS document what MoveFile will return? */
|
|
|
2174 if (GetLastError () == ERROR_FILE_EXISTS
|
|
|
2175 || GetLastError () == ERROR_ALREADY_EXISTS)
|
|
|
2176 #else /* not WINDOWSNT */
|
|
|
2177 if (errno == EXDEV)
|
|
|
2178 #endif /* not WINDOWSNT */
|
|
|
2179 {
|
|
|
2180 Fcopy_file (filename, newname,
|
|
|
2181 /* We have already prompted if it was an integer,
|
|
|
2182 so don't have copy-file prompt again. */
|
|
|
2183 ((NILP (ok_if_already_exists)) ? Qnil : Qt),
|
|
|
2184 Qt);
|
|
|
2185 Fdelete_file (filename);
|
|
|
2186 }
|
|
|
2187 else
|
|
|
2188 {
|
|
|
2189 report_file_error ("Renaming", list2 (filename, newname));
|
|
|
2190 }
|
|
|
2191 }
|
|
|
2192 UNGCPRO;
|
|
|
2193 return Qnil;
|
|
|
2194 }
|
|
|
2195
|
|
20
|
2196 DEFUN ("add-name-to-file", Fadd_name_to_file, 2, 3,
|
|
|
2197 "fAdd name to file: \nFName to add to %s: \np", /*
|
|
0
|
2198 Give FILE additional name NEWNAME. Both args strings.
|
|
|
2199 Signals a `file-already-exists' error if a file NEWNAME already exists
|
|
|
2200 unless optional third argument OK-IF-ALREADY-EXISTS is non-nil.
|
|
|
2201 A number as third arg means request confirmation if NEWNAME already exists.
|
|
|
2202 This is what happens in interactive use with M-x.
|
|
20
|
2203 */
|
|
|
2204 (filename, newname, ok_if_already_exists))
|
|
0
|
2205 {
|
|
44
|
2206 /* This function can call lisp */
|
|
0
|
2207 Lisp_Object handler;
|
|
|
2208 struct gcpro gcpro1, gcpro2;
|
|
|
2209
|
|
|
2210 GCPRO2 (filename, newname);
|
|
|
2211 CHECK_STRING (filename);
|
|
|
2212 CHECK_STRING (newname);
|
|
|
2213 filename = Fexpand_file_name (filename, Qnil);
|
|
|
2214 newname = Fexpand_file_name (newname, Qnil);
|
|
|
2215
|
|
|
2216 /* If the file name has special constructs in it,
|
|
|
2217 call the corresponding file handler. */
|
|
|
2218 handler = Ffind_file_name_handler (filename, Qadd_name_to_file);
|
|
|
2219 if (!NILP (handler))
|
|
|
2220 RETURN_UNGCPRO (call4 (handler, Qadd_name_to_file, filename,
|
|
|
2221 newname, ok_if_already_exists));
|
|
|
2222
|
|
|
2223 /* If the new name has special constructs in it,
|
|
|
2224 call the corresponding file handler. */
|
|
|
2225 handler = Ffind_file_name_handler (newname, Qadd_name_to_file);
|
|
|
2226 if (!NILP (handler))
|
|
|
2227 RETURN_UNGCPRO (call4 (handler, Qadd_name_to_file, filename,
|
|
|
2228 newname, ok_if_already_exists));
|
|
|
2229
|
|
|
2230 if (NILP (ok_if_already_exists)
|
|
|
2231 || INTP (ok_if_already_exists))
|
|
|
2232 barf_or_query_if_file_exists (newname, "make it a new name",
|
|
|
2233 INTP (ok_if_already_exists), 0);
|
|
|
2234 #ifdef WINDOWSNT
|
|
|
2235 /* Windows does not support this operation. */
|
|
|
2236 report_file_error ("Adding new name", Flist (2, &filename));
|
|
|
2237 #else /* not WINDOWSNT */
|
|
|
2238
|
|
16
|
2239 unlink ((char *) XSTRING_DATA (newname));
|
|
|
2240 if (0 > link ((char *) XSTRING_DATA (filename),
|
|
|
2241 (char *) XSTRING_DATA (newname)))
|
|
0
|
2242 {
|
|
|
2243 report_file_error ("Adding new name",
|
|
|
2244 list2 (filename, newname));
|
|
|
2245 }
|
|
|
2246 #endif /* not WINDOWSNT */
|
|
|
2247
|
|
|
2248 UNGCPRO;
|
|
|
2249 return Qnil;
|
|
|
2250 }
|
|
|
2251
|
|
|
2252 #ifdef S_IFLNK
|
|
20
|
2253 DEFUN ("make-symbolic-link", Fmake_symbolic_link, 2, 3,
|
|
|
2254 "FMake symbolic link to file: \nFMake symbolic link to file %s: \np", /*
|
|
0
|
2255 Make a symbolic link to FILENAME, named LINKNAME. Both args strings.
|
|
|
2256 Signals a `file-already-exists' error if a file LINKNAME already exists
|
|
|
2257 unless optional third argument OK-IF-ALREADY-EXISTS is non-nil.
|
|
|
2258 A number as third arg means request confirmation if LINKNAME already exists.
|
|
|
2259 This happens for interactive use with M-x.
|
|
20
|
2260 */
|
|
|
2261 (filename, linkname, ok_if_already_exists))
|
|
0
|
2262 {
|
|
44
|
2263 /* This function can call lisp */
|
|
0
|
2264 Lisp_Object handler;
|
|
|
2265 struct gcpro gcpro1, gcpro2;
|
|
|
2266
|
|
|
2267 GCPRO2 (filename, linkname);
|
|
|
2268 CHECK_STRING (filename);
|
|
|
2269 CHECK_STRING (linkname);
|
|
|
2270 /* If the link target has a ~, we must expand it to get
|
|
|
2271 a truly valid file name. Otherwise, do not expand;
|
|
|
2272 we want to permit links to relative file names. */
|
|
16
|
2273 if (XSTRING_BYTE (filename, 0) == '~') /* #### Un*x-specific */
|
|
0
|
2274 filename = Fexpand_file_name (filename, Qnil);
|
|
|
2275 linkname = Fexpand_file_name (linkname, Qnil);
|
|
|
2276
|
|
|
2277 /* If the file name has special constructs in it,
|
|
|
2278 call the corresponding file handler. */
|
|
|
2279 handler = Ffind_file_name_handler (filename, Qmake_symbolic_link);
|
|
|
2280 if (!NILP (handler))
|
|
|
2281 RETURN_UNGCPRO (call4 (handler, Qmake_symbolic_link, filename, linkname,
|
|
|
2282 ok_if_already_exists));
|
|
|
2283
|
|
|
2284 /* If the new link name has special constructs in it,
|
|
|
2285 call the corresponding file handler. */
|
|
|
2286 handler = Ffind_file_name_handler (linkname, Qmake_symbolic_link);
|
|
|
2287 if (!NILP (handler))
|
|
|
2288 RETURN_UNGCPRO (call4 (handler, Qmake_symbolic_link, filename,
|
|
|
2289 linkname, ok_if_already_exists));
|
|
|
2290
|
|
|
2291 if (NILP (ok_if_already_exists)
|
|
|
2292 || INTP (ok_if_already_exists))
|
|
|
2293 barf_or_query_if_file_exists (linkname, "make it a link",
|
|
|
2294 INTP (ok_if_already_exists), 0);
|
|
|
2295
|
|
16
|
2296 unlink ((char *) XSTRING_DATA (linkname));
|
|
|
2297 if (0 > symlink ((char *) XSTRING_DATA (filename),
|
|
|
2298 (char *) XSTRING_DATA (linkname)))
|
|
0
|
2299 {
|
|
|
2300 report_file_error ("Making symbolic link",
|
|
|
2301 list2 (filename, linkname));
|
|
|
2302 }
|
|
|
2303 UNGCPRO;
|
|
|
2304 return Qnil;
|
|
|
2305 }
|
|
|
2306 #endif /* S_IFLNK */
|
|
|
2307
|
|
|
2308 #ifdef VMS
|
|
|
2309
|
|
20
|
2310 DEFUN ("define-logical-name", Fdefine_logical_name, 2, 2,
|
|
|
2311 "sDefine logical name: \nsDefine logical name %s as: ", /*
|
|
0
|
2312 Define the job-wide logical name NAME to have the value STRING.
|
|
|
2313 If STRING is nil or a null string, the logical name NAME is deleted.
|
|
20
|
2314 */
|
|
|
2315 (varname, string))
|
|
0
|
2316 {
|
|
|
2317 CHECK_STRING (varname);
|
|
|
2318 if (NILP (string))
|
|
16
|
2319 delete_logical_name ((char *) XSTRING_DATA (varname));
|
|
0
|
2320 else
|
|
|
2321 {
|
|
|
2322 CHECK_STRING (string);
|
|
|
2323
|
|
16
|
2324 if (XSTRING_LENGTH (string) == 0)
|
|
|
2325 delete_logical_name ((char *) XSTRING_DATA (varname));
|
|
0
|
2326 else
|
|
16
|
2327 define_logical_name ((char *) XSTRING_DATA (varname), (char *) XSTRING_DATA (string));
|
|
0
|
2328 }
|
|
|
2329
|
|
|
2330 return string;
|
|
|
2331 }
|
|
|
2332 #endif /* VMS */
|
|
|
2333
|
|
|
2334 #ifdef HPUX_NET
|
|
|
2335
|
|
20
|
2336 DEFUN ("sysnetunam", Fsysnetunam, 2, 2, 0, /*
|
|
0
|
2337 Open a network connection to PATH using LOGIN as the login string.
|
|
20
|
2338 */
|
|
|
2339 (path, login))
|
|
0
|
2340 {
|
|
|
2341 int netresult;
|
|
|
2342
|
|
|
2343 CHECK_STRING (path);
|
|
|
2344 CHECK_STRING (login);
|
|
|
2345
|
|
|
2346 /* netunam, being a strange-o system call only used once, is not
|
|
|
2347 encapsulated. */
|
|
|
2348 {
|
|
|
2349 char *path_ext;
|
|
|
2350 char *login_ext;
|
|
|
2351
|
|
|
2352 GET_C_STRING_FILENAME_DATA_ALLOCA (path, path_ext);
|
|
|
2353 GET_C_STRING_EXT_DATA_ALLOCA (login, FORMAT_OS, login_ext);
|
|
|
2354
|
|
|
2355 netresult = netunam (path_ext, login_ext);
|
|
|
2356 }
|
|
|
2357
|
|
|
2358 if (netresult == -1)
|
|
|
2359 return Qnil;
|
|
|
2360 else
|
|
|
2361 return Qt;
|
|
|
2362 }
|
|
|
2363 #endif /* HPUX_NET */
|
|
|
2364
|
|
20
|
2365 DEFUN ("file-name-absolute-p", Ffile_name_absolute_p, 1, 1, 0, /*
|
|
0
|
2366 Return t if file FILENAME specifies an absolute path name.
|
|
|
2367 On Unix, this is a name starting with a `/' or a `~'.
|
|
20
|
2368 */
|
|
|
2369 (filename))
|
|
0
|
2370 {
|
|
44
|
2371 /* This function does not GC */
|
|
0
|
2372 Bufbyte *ptr;
|
|
|
2373
|
|
|
2374 CHECK_STRING (filename);
|
|
16
|
2375 ptr = XSTRING_DATA (filename);
|
|
0
|
2376 if (IS_DIRECTORY_SEP (*ptr) || *ptr == '~'
|
|
|
2377 #ifdef VMS
|
|
|
2378 /* ??? This criterion is probably wrong for '<'. */
|
|
|
2379 || strchr (ptr, ':') || strchr (ptr, '<')
|
|
|
2380 || (*ptr == '[' && (ptr[1] != '-' || (ptr[2] != '.' && ptr[2] != ']'))
|
|
|
2381 && ptr[1] != '.')
|
|
|
2382 #endif /* VMS */
|
|
|
2383 #ifdef DOS_NT
|
|
|
2384 || (*ptr != 0 && ptr[1] == ':' && (ptr[2] == '/' || ptr[2] == '\\'))
|
|
|
2385 #endif
|
|
|
2386 )
|
|
|
2387 return Qt;
|
|
|
2388 else
|
|
|
2389 return Qnil;
|
|
|
2390 }
|
|
|
2391
|
|
|
2392 /* Return nonzero if file FILENAME exists and can be executed. */
|
|
|
2393
|
|
|
2394 static int
|
|
|
2395 check_executable (char *filename)
|
|
|
2396 {
|
|
|
2397 #ifdef DOS_NT
|
|
|
2398 int len = strlen (filename);
|
|
|
2399 char *suffix;
|
|
|
2400 struct stat st;
|
|
|
2401 if (stat (filename, &st) < 0)
|
|
|
2402 return 0;
|
|
|
2403 return (S_ISREG (st.st_mode)
|
|
|
2404 && len >= 5
|
|
|
2405 && (stricmp ((suffix = filename + len-4), ".com") == 0
|
|
|
2406 || stricmp (suffix, ".exe") == 0
|
|
|
2407 || stricmp (suffix, ".bat") == 0)
|
|
|
2408 || (st.st_mode & S_IFMT) == S_IFDIR);
|
|
|
2409 #else /* not DOS_NT */
|
|
|
2410 #ifdef HAVE_EACCESS
|
|
|
2411 return (eaccess (filename, 1) >= 0);
|
|
|
2412 #else
|
|
|
2413 /* Access isn't quite right because it uses the real uid
|
|
|
2414 and we really want to test with the effective uid.
|
|
|
2415 But Unix doesn't give us a right way to do it. */
|
|
|
2416 return (access (filename, 1) >= 0);
|
|
|
2417 #endif
|
|
|
2418 #endif /* not DOS_NT */
|
|
|
2419 }
|
|
|
2420
|
|
|
2421 /* Return nonzero if file FILENAME exists and can be written. */
|
|
|
2422
|
|
|
2423 static int
|
|
|
2424 check_writable (CONST char *filename)
|
|
|
2425 {
|
|
|
2426 #ifdef MSDOS
|
|
|
2427 struct stat st;
|
|
|
2428 if (stat (filename, &st) < 0)
|
|
|
2429 return 0;
|
|
|
2430 return (st.st_mode & S_IWRITE || (st.st_mode & S_IFMT) == S_IFDIR);
|
|
|
2431 #else /* not MSDOS */
|
|
|
2432 #ifdef HAVE_EACCESS
|
|
|
2433 return (eaccess (filename, 2) >= 0);
|
|
|
2434 #else
|
|
|
2435 /* Access isn't quite right because it uses the real uid
|
|
|
2436 and we really want to test with the effective uid.
|
|
|
2437 But Unix doesn't give us a right way to do it.
|
|
|
2438 Opening with O_WRONLY could work for an ordinary file,
|
|
|
2439 but would lose for directories. */
|
|
|
2440 return (access (filename, 2) >= 0);
|
|
|
2441 #endif
|
|
|
2442 #endif /* not MSDOS */
|
|
|
2443 }
|
|
|
2444
|
|
20
|
2445 DEFUN ("file-exists-p", Ffile_exists_p, 1, 1, 0, /*
|
|
0
|
2446 Return t if file FILENAME exists. (This does not mean you can read it.)
|
|
|
2447 See also `file-readable-p' and `file-attributes'.
|
|
20
|
2448 */
|
|
|
2449 (filename))
|
|
0
|
2450 {
|
|
44
|
2451 /* This function can call lisp */
|
|
0
|
2452 Lisp_Object abspath;
|
|
|
2453 Lisp_Object handler;
|
|
|
2454 struct stat statbuf;
|
|
|
2455 struct gcpro gcpro1;
|
|
|
2456
|
|
|
2457 CHECK_STRING (filename);
|
|
|
2458 abspath = Fexpand_file_name (filename, Qnil);
|
|
|
2459
|
|
|
2460 /* If the file name has special constructs in it,
|
|
|
2461 call the corresponding file handler. */
|
|
|
2462 GCPRO1 (abspath);
|
|
|
2463 handler = Ffind_file_name_handler (abspath, Qfile_exists_p);
|
|
|
2464 UNGCPRO;
|
|
|
2465 if (!NILP (handler))
|
|
|
2466 return call2 (handler, Qfile_exists_p, abspath);
|
|
|
2467
|
|
16
|
2468 if (stat ((char *) XSTRING_DATA (abspath), &statbuf) >= 0)
|
|
0
|
2469 return (Qt);
|
|
|
2470 else
|
|
|
2471 return (Qnil);
|
|
|
2472 }
|
|
|
2473
|
|
20
|
2474 DEFUN ("file-executable-p", Ffile_executable_p, 1, 1, 0, /*
|
|
0
|
2475 Return t if FILENAME can be executed by you.
|
|
|
2476 For a directory, this means you can access files in that directory.
|
|
20
|
2477 */
|
|
|
2478 (filename))
|
|
0
|
2479 {
|
|
44
|
2480 /* This function can call lisp */
|
|
0
|
2481 Lisp_Object abspath;
|
|
|
2482 Lisp_Object handler;
|
|
|
2483 struct gcpro gcpro1;
|
|
|
2484
|
|
|
2485 GCPRO1 (filename);
|
|
|
2486 CHECK_STRING (filename);
|
|
|
2487 abspath = Fexpand_file_name (filename, Qnil);
|
|
|
2488 UNGCPRO;
|
|
|
2489
|
|
|
2490 /* If the file name has special constructs in it,
|
|
|
2491 call the corresponding file handler. */
|
|
|
2492 GCPRO1 (abspath);
|
|
|
2493 handler = Ffind_file_name_handler (abspath, Qfile_executable_p);
|
|
|
2494 UNGCPRO;
|
|
|
2495 if (!NILP (handler))
|
|
|
2496 return call2 (handler, Qfile_executable_p, abspath);
|
|
|
2497
|
|
16
|
2498 return (check_executable ((char *) XSTRING_DATA (abspath))
|
|
0
|
2499 ? Qt : Qnil);
|
|
|
2500 }
|
|
|
2501
|
|
20
|
2502 DEFUN ("file-readable-p", Ffile_readable_p, 1, 1, 0, /*
|
|
0
|
2503 Return t if file FILENAME exists and you can read it.
|
|
|
2504 See also `file-exists-p' and `file-attributes'.
|
|
20
|
2505 */
|
|
|
2506 (filename))
|
|
0
|
2507 {
|
|
44
|
2508 /* This function can call lisp */
|
|
0
|
2509 Lisp_Object abspath;
|
|
|
2510 Lisp_Object handler;
|
|
|
2511 int desc;
|
|
|
2512 struct gcpro gcpro1;
|
|
|
2513
|
|
|
2514 CHECK_STRING (filename);
|
|
|
2515 abspath = Fexpand_file_name (filename, Qnil);
|
|
|
2516
|
|
|
2517 /* If the file name has special constructs in it,
|
|
|
2518 call the corresponding file handler. */
|
|
|
2519 GCPRO1 (abspath);
|
|
|
2520 handler = Ffind_file_name_handler (abspath, Qfile_readable_p);
|
|
|
2521 UNGCPRO;
|
|
|
2522 if (!NILP (handler))
|
|
|
2523 return call2 (handler, Qfile_readable_p, abspath);
|
|
|
2524
|
|
16
|
2525 desc = open ((char *) XSTRING_DATA (abspath), O_RDONLY, 0);
|
|
0
|
2526 if (desc < 0)
|
|
|
2527 return Qnil;
|
|
|
2528 close (desc);
|
|
|
2529 return Qt;
|
|
|
2530 }
|
|
|
2531
|
|
|
2532 /* Having this before file-symlink-p mysteriously caused it to be forgotten
|
|
|
2533 on the RT/PC. */
|
|
20
|
2534 DEFUN ("file-writable-p", Ffile_writable_p, 1, 1, 0, /*
|
|
0
|
2535 Return t if file FILENAME can be written or created by you.
|
|
20
|
2536 */
|
|
|
2537 (filename))
|
|
0
|
2538 {
|
|
44
|
2539 /* This function can call lisp */
|
|
0
|
2540 Lisp_Object abspath, dir;
|
|
|
2541 Lisp_Object handler;
|
|
|
2542 struct stat statbuf;
|
|
|
2543 struct gcpro gcpro1;
|
|
|
2544
|
|
|
2545 CHECK_STRING (filename);
|
|
|
2546 abspath = Fexpand_file_name (filename, Qnil);
|
|
|
2547
|
|
|
2548 /* If the file name has special constructs in it,
|
|
|
2549 call the corresponding file handler. */
|
|
|
2550 GCPRO1 (abspath);
|
|
|
2551 handler = Ffind_file_name_handler (abspath, Qfile_writable_p);
|
|
|
2552 UNGCPRO;
|
|
|
2553 if (!NILP (handler))
|
|
|
2554 return call2 (handler, Qfile_writable_p, abspath);
|
|
|
2555
|
|
16
|
2556 if (stat ((char *) XSTRING_DATA (abspath), &statbuf) >= 0)
|
|
|
2557 return (check_writable ((char *) XSTRING_DATA (abspath))
|
|
0
|
2558 ? Qt : Qnil);
|
|
|
2559
|
|
|
2560
|
|
40
|
2561 GCPRO1 (abspath);
|
|
0
|
2562 dir = Ffile_name_directory (abspath);
|
|
40
|
2563 UNGCPRO;
|
|
0
|
2564 #if defined (VMS) || defined (MSDOS)
|
|
|
2565 if (!NILP (dir))
|
|
40
|
2566 {
|
|
|
2567 GCPRO1(dir);
|
|
|
2568 dir = Fdirectory_file_name (dir);
|
|
|
2569 UNGCPRO;
|
|
|
2570 }
|
|
0
|
2571 #endif /* VMS or MSDOS */
|
|
16
|
2572 return (check_writable (!NILP (dir) ? (char *) XSTRING_DATA (dir)
|
|
0
|
2573 : "")
|
|
|
2574 ? Qt : Qnil);
|
|
|
2575 }
|
|
|
2576
|
|
20
|
2577 DEFUN ("file-symlink-p", Ffile_symlink_p, 1, 1, 0, /*
|
|
0
|
2578 Return non-nil if file FILENAME is the name of a symbolic link.
|
|
|
2579 The value is the name of the file to which it is linked.
|
|
|
2580 Otherwise returns nil.
|
|
20
|
2581 */
|
|
|
2582 (filename))
|
|
0
|
2583 {
|
|
44
|
2584 /* This function can call lisp */
|
|
0
|
2585 #ifdef S_IFLNK
|
|
|
2586 char *buf;
|
|
|
2587 int bufsize;
|
|
|
2588 int valsize;
|
|
|
2589 Lisp_Object val;
|
|
|
2590 Lisp_Object handler;
|
|
|
2591 struct gcpro gcpro1;
|
|
|
2592
|
|
|
2593 CHECK_STRING (filename);
|
|
|
2594 filename = Fexpand_file_name (filename, Qnil);
|
|
|
2595
|
|
|
2596 /* If the file name has special constructs in it,
|
|
|
2597 call the corresponding file handler. */
|
|
44
|
2598 GCPRO1 (filename);
|
|
0
|
2599 handler = Ffind_file_name_handler (filename, Qfile_symlink_p);
|
|
44
|
2600 UNGCPRO;
|
|
0
|
2601 if (!NILP (handler))
|
|
|
2602 return call2 (handler, Qfile_symlink_p, filename);
|
|
|
2603
|
|
|
2604 bufsize = 100;
|
|
|
2605 while (1)
|
|
|
2606 {
|
|
|
2607 buf = (char *) xmalloc (bufsize);
|
|
|
2608 memset (buf, 0, bufsize);
|
|
16
|
2609 valsize = readlink ((char *) XSTRING_DATA (filename),
|
|
0
|
2610 buf, bufsize);
|
|
|
2611 if (valsize < bufsize) break;
|
|
|
2612 /* Buffer was not long enough */
|
|
|
2613 xfree (buf);
|
|
|
2614 bufsize *= 2;
|
|
|
2615 }
|
|
|
2616 if (valsize == -1)
|
|
|
2617 {
|
|
|
2618 xfree (buf);
|
|
|
2619 return Qnil;
|
|
|
2620 }
|
|
|
2621 val = make_string ((Bufbyte *) buf, valsize);
|
|
|
2622 xfree (buf);
|
|
|
2623 return val;
|
|
|
2624 #else /* not S_IFLNK */
|
|
|
2625 return Qnil;
|
|
|
2626 #endif /* not S_IFLNK */
|
|
|
2627 }
|
|
|
2628
|
|
20
|
2629 DEFUN ("file-directory-p", Ffile_directory_p, 1, 1, 0, /*
|
|
0
|
2630 Return t if file FILENAME is the name of a directory as a file.
|
|
|
2631 A directory name spec may be given instead; then the value is t
|
|
|
2632 if the directory so specified exists and really is a directory.
|
|
20
|
2633 */
|
|
|
2634 (filename))
|
|
0
|
2635 {
|
|
44
|
2636 /* This function can call lisp */
|
|
0
|
2637 Lisp_Object abspath;
|
|
|
2638 struct stat st;
|
|
|
2639 Lisp_Object handler;
|
|
|
2640 struct gcpro gcpro1;
|
|
|
2641
|
|
40
|
2642 GCPRO1 (current_buffer->directory);
|
|
0
|
2643 abspath = expand_and_dir_to_file (filename,
|
|
|
2644 current_buffer->directory);
|
|
|
2645 UNGCPRO;
|
|
|
2646
|
|
|
2647 /* If the file name has special constructs in it,
|
|
|
2648 call the corresponding file handler. */
|
|
|
2649 GCPRO1 (abspath);
|
|
|
2650 handler = Ffind_file_name_handler (abspath, Qfile_directory_p);
|
|
|
2651 UNGCPRO;
|
|
|
2652 if (!NILP (handler))
|
|
|
2653 return call2 (handler, Qfile_directory_p, abspath);
|
|
|
2654
|
|
16
|
2655 if (stat ((char *) XSTRING_DATA (abspath), &st) < 0)
|
|
0
|
2656 return Qnil;
|
|
|
2657 return (st.st_mode & S_IFMT) == S_IFDIR ? Qt : Qnil;
|
|
|
2658 }
|
|
|
2659
|
|
20
|
2660 DEFUN ("file-accessible-directory-p", Ffile_accessible_directory_p, 1, 1, 0, /*
|
|
0
|
2661 Return t if file FILENAME is the name of a directory as a file,
|
|
|
2662 and files in that directory can be opened by you. In order to use a
|
|
|
2663 directory as a buffer's current directory, this predicate must return true.
|
|
|
2664 A directory name spec may be given instead; then the value is t
|
|
|
2665 if the directory so specified exists and really is a readable and
|
|
|
2666 searchable directory.
|
|
20
|
2667 */
|
|
|
2668 (filename))
|
|
0
|
2669 {
|
|
44
|
2670 /* This function can call lisp */
|
|
0
|
2671 Lisp_Object handler;
|
|
|
2672
|
|
|
2673 /* If the file name has special constructs in it,
|
|
|
2674 call the corresponding file handler. */
|
|
|
2675 handler = Ffind_file_name_handler (filename, Qfile_accessible_directory_p);
|
|
|
2676 if (!NILP (handler))
|
|
|
2677 return call2 (handler, Qfile_accessible_directory_p,
|
|
|
2678 filename);
|
|
|
2679
|
|
|
2680 if (NILP (Ffile_directory_p (filename)))
|
|
|
2681 return (Qnil);
|
|
44
|
2682 else
|
|
|
2683 return Ffile_executable_p (filename);
|
|
0
|
2684 }
|
|
|
2685
|
|
20
|
2686 DEFUN ("file-regular-p", Ffile_regular_p, 1, 1, 0, /*
|
|
0
|
2687 "Return t if file FILENAME is the name of a regular file.
|
|
|
2688 This is the sort of file that holds an ordinary stream of data bytes.
|
|
20
|
2689 */
|
|
|
2690 (filename))
|
|
0
|
2691 {
|
|
44
|
2692 /* This function can call lisp */
|
|
40
|
2693 Lisp_Object abspath;
|
|
0
|
2694 struct stat st;
|
|
|
2695 Lisp_Object handler;
|
|
40
|
2696 struct gcpro gcpro1;
|
|
|
2697
|
|
|
2698 GCPRO1 (current_buffer->directory);
|
|
0
|
2699 abspath = expand_and_dir_to_file (filename, current_buffer->directory);
|
|
40
|
2700 UNGCPRO;
|
|
0
|
2701
|
|
|
2702 /* If the file name has special constructs in it,
|
|
|
2703 call the corresponding file handler. */
|
|
40
|
2704 GCPRO1 (abspath);
|
|
0
|
2705 handler = Ffind_file_name_handler (abspath, Qfile_regular_p);
|
|
40
|
2706 UNGCPRO;
|
|
0
|
2707 if (!NILP (handler))
|
|
|
2708 return call2 (handler, Qfile_regular_p, abspath);
|
|
|
2709
|
|
16
|
2710 if (stat ((char *) XSTRING_DATA (abspath), &st) < 0)
|
|
0
|
2711 return Qnil;
|
|
|
2712 return (st.st_mode & S_IFMT) == S_IFREG ? Qt : Qnil;
|
|
|
2713 }
|
|
|
2714
|
|
20
|
2715 DEFUN ("file-modes", Ffile_modes, 1, 1, 0, /*
|
|
0
|
2716 Return mode bits of FILE, as an integer.
|
|
20
|
2717 */
|
|
|
2718 (filename))
|
|
0
|
2719 {
|
|
44
|
2720 /* This function can call lisp */
|
|
0
|
2721 Lisp_Object abspath;
|
|
|
2722 struct stat st;
|
|
|
2723 Lisp_Object handler;
|
|
|
2724 struct gcpro gcpro1;
|
|
|
2725
|
|
40
|
2726 GCPRO1 (current_buffer->directory);
|
|
0
|
2727 abspath = expand_and_dir_to_file (filename,
|
|
|
2728 current_buffer->directory);
|
|
|
2729 UNGCPRO;
|
|
|
2730
|
|
|
2731 /* If the file name has special constructs in it,
|
|
|
2732 call the corresponding file handler. */
|
|
|
2733 GCPRO1 (abspath);
|
|
|
2734 handler = Ffind_file_name_handler (abspath, Qfile_modes);
|
|
|
2735 UNGCPRO;
|
|
|
2736 if (!NILP (handler))
|
|
|
2737 return call2 (handler, Qfile_modes, abspath);
|
|
|
2738
|
|
16
|
2739 if (stat ((char *) XSTRING_DATA (abspath), &st) < 0)
|
|
0
|
2740 return Qnil;
|
|
|
2741 #ifdef DOS_NT
|
|
|
2742 if (check_executable (XSTRING (abspath)->data))
|
|
|
2743 st.st_mode |= S_IEXEC;
|
|
|
2744 #endif /* DOS_NT */
|
|
|
2745
|
|
|
2746 return make_int (st.st_mode & 07777);
|
|
|
2747 }
|
|
|
2748
|
|
20
|
2749 DEFUN ("set-file-modes", Fset_file_modes, 2, 2, 0, /*
|
|
0
|
2750 Set mode bits of FILE to MODE (an integer).
|
|
|
2751 Only the 12 low bits of MODE are used.
|
|
20
|
2752 */
|
|
|
2753 (filename, mode))
|
|
0
|
2754 {
|
|
44
|
2755 /* This function can call lisp */
|
|
0
|
2756 Lisp_Object abspath;
|
|
|
2757 Lisp_Object handler;
|
|
40
|
2758 struct gcpro gcpro1;
|
|
0
|
2759
|
|
40
|
2760 GCPRO1 (current_buffer->directory);
|
|
0
|
2761 abspath = Fexpand_file_name (filename, current_buffer->directory);
|
|
44
|
2762 UNGCPRO;
|
|
|
2763
|
|
0
|
2764 CHECK_INT (mode);
|
|
|
2765
|
|
|
2766 /* If the file name has special constructs in it,
|
|
|
2767 call the corresponding file handler. */
|
|
|
2768 GCPRO1 (abspath);
|
|
|
2769 handler = Ffind_file_name_handler (abspath, Qset_file_modes);
|
|
|
2770 UNGCPRO;
|
|
|
2771 if (!NILP (handler))
|
|
|
2772 return call3 (handler, Qset_file_modes, abspath, mode);
|
|
|
2773
|
|
16
|
2774 if (chmod ((char *) XSTRING_DATA (abspath), XINT (mode)) < 0)
|
|
0
|
2775 report_file_error ("Doing chmod", Fcons (abspath, Qnil));
|
|
|
2776
|
|
|
2777 return Qnil;
|
|
|
2778 }
|
|
|
2779
|
|
20
|
2780 DEFUN ("set-default-file-modes", Fset_default_file_modes, 1, 1, 0, /*
|
|
0
|
2781 Set the file permission bits for newly created files.
|
|
|
2782 MASK should be an integer; if a permission's bit in MASK is 1,
|
|
|
2783 subsequently created files will not have that permission enabled.
|
|
|
2784 Only the low 9 bits are used.
|
|
|
2785 This setting is inherited by subprocesses.
|
|
20
|
2786 */
|
|
|
2787 (mode))
|
|
0
|
2788 {
|
|
|
2789 CHECK_INT (mode);
|
|
|
2790
|
|
|
2791 umask ((~ XINT (mode)) & 0777);
|
|
|
2792
|
|
|
2793 return Qnil;
|
|
|
2794 }
|
|
|
2795
|
|
20
|
2796 DEFUN ("default-file-modes", Fdefault_file_modes, 0, 0, 0, /*
|
|
0
|
2797 Return the default file protection for created files.
|
|
|
2798 The umask value determines which permissions are enabled in newly
|
|
|
2799 created files. If a permission's bit in the umask is 1, subsequently
|
|
|
2800 created files will not have that permission enabled.
|
|
20
|
2801 */
|
|
|
2802 ())
|
|
0
|
2803 {
|
|
|
2804 int mode;
|
|
|
2805
|
|
|
2806 mode = umask (0);
|
|
|
2807 umask (mode);
|
|
|
2808
|
|
|
2809 return make_int ((~ mode) & 0777);
|
|
|
2810 }
|
|
|
2811
|
|
|
2812 #ifndef VMS
|
|
20
|
2813 DEFUN ("unix-sync", Funix_sync, 0, 0, "", /*
|
|
0
|
2814 Tell Unix to finish all pending disk updates.
|
|
20
|
2815 */
|
|
|
2816 ())
|
|
0
|
2817 {
|
|
|
2818 sync ();
|
|
|
2819 return Qnil;
|
|
|
2820 }
|
|
|
2821 #endif /* !VMS */
|
|
|
2822
|
|
|
2823
|
|
20
|
2824 DEFUN ("file-newer-than-file-p", Ffile_newer_than_file_p, 2, 2, 0, /*
|
|
0
|
2825 Return t if file FILE1 is newer than file FILE2.
|
|
|
2826 If FILE1 does not exist, the answer is nil;
|
|
|
2827 otherwise, if FILE2 does not exist, the answer is t.
|
|
20
|
2828 */
|
|
|
2829 (file1, file2))
|
|
0
|
2830 {
|
|
44
|
2831 /* This function can call lisp */
|
|
0
|
2832 Lisp_Object abspath1, abspath2;
|
|
|
2833 struct stat st;
|
|
|
2834 int mtime1;
|
|
|
2835 Lisp_Object handler;
|
|
40
|
2836 struct gcpro gcpro1, gcpro2, gcpro3;
|
|
0
|
2837
|
|
|
2838 CHECK_STRING (file1);
|
|
|
2839 CHECK_STRING (file2);
|
|
|
2840
|
|
|
2841 abspath1 = Qnil;
|
|
40
|
2842 abspath2 = Qnil;
|
|
|
2843
|
|
|
2844 GCPRO3 (abspath1, abspath2, current_buffer->directory);
|
|
|
2845 abspath1 = expand_and_dir_to_file (file1, current_buffer->directory);
|
|
|
2846 abspath2 = expand_and_dir_to_file (file2, current_buffer->directory);
|
|
0
|
2847
|
|
|
2848 /* If the file name has special constructs in it,
|
|
|
2849 call the corresponding file handler. */
|
|
|
2850 handler = Ffind_file_name_handler (abspath1, Qfile_newer_than_file_p);
|
|
|
2851 if (NILP (handler))
|
|
|
2852 handler = Ffind_file_name_handler (abspath2, Qfile_newer_than_file_p);
|
|
|
2853 UNGCPRO;
|
|
|
2854 if (!NILP (handler))
|
|
|
2855 return call3 (handler, Qfile_newer_than_file_p, abspath1,
|
|
|
2856 abspath2);
|
|
|
2857
|
|
16
|
2858 if (stat ((char *) XSTRING_DATA (abspath1), &st) < 0)
|
|
0
|
2859 return Qnil;
|
|
|
2860
|
|
|
2861 mtime1 = st.st_mtime;
|
|
|
2862
|
|
16
|
2863 if (stat ((char *) XSTRING_DATA (abspath2), &st) < 0)
|
|
0
|
2864 return Qt;
|
|
|
2865
|
|
|
2866 return (mtime1 > st.st_mtime) ? Qt : Qnil;
|
|
|
2867 }
|
|
|
2868
|
|
|
2869
|
|
|
2870 #ifdef DOS_NT
|
|
|
2871 Lisp_Object Qfind_buffer_file_type;
|
|
|
2872 #endif /* DOS_NT */
|
|
|
2873
|
|
2
|
2874 /* Stack sizes > 2**16 is a good way to elicit compiler bugs */
|
|
|
2875 /* #define READ_BUF_SIZE (2 << 16) */
|
|
|
2876 #define READ_BUF_SIZE (1 << 15)
|
|
0
|
2877
|
|
20
|
2878 DEFUN ("insert-file-contents-internal",
|
|
|
2879 Finsert_file_contents_internal, 1, 5, 0, /*
|
|
0
|
2880 Insert contents of file FILENAME after point.
|
|
|
2881 Returns list of absolute file name and length of data inserted.
|
|
|
2882 If second argument VISIT is non-nil, the buffer's visited filename
|
|
|
2883 and last save file modtime are set, and it is marked unmodified.
|
|
|
2884 If visiting and the file does not exist, visiting is completed
|
|
|
2885 before the error is signaled.
|
|
|
2886
|
|
|
2887 The optional third and fourth arguments BEG and END
|
|
|
2888 specify what portion of the file to insert.
|
|
|
2889 If VISIT is non-nil, BEG and END must be nil.
|
|
|
2890 If optional fifth argument REPLACE is non-nil,
|
|
|
2891 it means replace the current buffer contents (in the accessible portion)
|
|
|
2892 with the file contents. This is better than simply deleting and inserting
|
|
|
2893 the whole thing because (1) it preserves some marker positions
|
|
|
2894 and (2) it puts less data in the undo list.
|
|
20
|
2895 */
|
|
|
2896 (filename, visit, beg, end, replace))
|
|
0
|
2897 {
|
|
44
|
2898 /* This function can call lisp */
|
|
|
2899 /* #### dmoore - this function hasn't been checked for gc recently */
|
|
0
|
2900 struct stat st;
|
|
|
2901 int fd;
|
|
|
2902 int saverrno = 0;
|
|
|
2903 Charcount inserted = 0;
|
|
|
2904 int speccount;
|
|
40
|
2905 struct gcpro gcpro1, gcpro2, gcpro3, gcpro4, gcpro5;
|
|
0
|
2906 Lisp_Object handler = Qnil, val;
|
|
|
2907 int total;
|
|
|
2908 Bufbyte read_buf[READ_BUF_SIZE];
|
|
|
2909 int mc_count;
|
|
|
2910 struct buffer *buf = current_buffer;
|
|
40
|
2911 Lisp_Object curbuf;
|
|
0
|
2912 int not_regular = 0;
|
|
|
2913
|
|
|
2914 if (buf->base_buffer && ! NILP (visit))
|
|
|
2915 error ("Cannot do file visiting in an indirect buffer");
|
|
|
2916
|
|
|
2917 /* No need to call Fbarf_if_buffer_read_only() here.
|
|
|
2918 That's called in begin_multiple_change() or wherever. */
|
|
|
2919
|
|
|
2920 val = Qnil;
|
|
|
2921
|
|
40
|
2922 /* #### dmoore - should probably check in various places to see if
|
|
|
2923 curbuf was killed and if so signal an error? */
|
|
|
2924
|
|
|
2925 XSETBUFFER (curbuf, buf);
|
|
|
2926
|
|
|
2927 GCPRO5 (filename, val, visit, handler, curbuf);
|
|
0
|
2928
|
|
|
2929 mc_count = (NILP (replace)) ?
|
|
|
2930 begin_multiple_change (buf, BUF_PT (buf), BUF_PT (buf)) :
|
|
|
2931 begin_multiple_change (buf, BUF_BEG (buf), BUF_Z (buf));
|
|
|
2932
|
|
|
2933 speccount = specpdl_depth (); /* begin_multiple_change also adds
|
|
|
2934 an unwind_protect */
|
|
|
2935
|
|
|
2936 filename = Fexpand_file_name (filename, Qnil);
|
|
|
2937
|
|
|
2938 /* If the file name has special constructs in it,
|
|
|
2939 call the corresponding file handler. */
|
|
|
2940 handler = Ffind_file_name_handler (filename, Qinsert_file_contents);
|
|
|
2941 if (!NILP (handler))
|
|
|
2942 {
|
|
|
2943 val = call6 (handler, Qinsert_file_contents, filename,
|
|
16
|
2944 visit, beg, end, replace);
|
|
0
|
2945 goto handled;
|
|
|
2946 }
|
|
|
2947
|
|
|
2948 if ( (!NILP (beg) || !NILP (end)) && !NILP (visit) )
|
|
|
2949 error ("Attempt to visit less than an entire file");
|
|
|
2950
|
|
|
2951 if (!NILP (beg))
|
|
|
2952 CHECK_INT (beg);
|
|
|
2953 else
|
|
|
2954 beg = Qzero;
|
|
|
2955
|
|
|
2956 if (!NILP (end))
|
|
|
2957 CHECK_INT (end);
|
|
|
2958
|
|
|
2959 fd = -1;
|
|
|
2960
|
|
|
2961 #ifndef APOLLO
|
|
16
|
2962 if (stat ((char *) XSTRING_DATA (filename), &st) < 0)
|
|
0
|
2963 #else /* APOLLO */
|
|
16
|
2964 if ((fd = open ((char *) XSTRING_DATA (filename), O_RDONLY, 0)) < 0
|
|
0
|
2965 || fstat (fd, &st) < 0)
|
|
|
2966 #endif /* APOLLO */
|
|
|
2967 {
|
|
|
2968 if (fd >= 0) close (fd);
|
|
|
2969 badopen:
|
|
|
2970 if (NILP (visit))
|
|
|
2971 report_file_error ("Opening input file",
|
|
|
2972 Fcons (filename, Qnil));
|
|
|
2973 st.st_mtime = -1;
|
|
|
2974 goto notfound;
|
|
|
2975 }
|
|
|
2976
|
|
|
2977 #ifdef S_IFREG
|
|
|
2978 /* This code will need to be changed in order to work on named
|
|
|
2979 pipes, and it's probably just not worth it. So we should at
|
|
|
2980 least signal an error. */
|
|
|
2981 if (!S_ISREG (st.st_mode))
|
|
|
2982 {
|
|
|
2983 if (NILP (visit))
|
|
|
2984 {
|
|
|
2985 end_multiple_change (buf, mc_count);
|
|
|
2986
|
|
|
2987 return Fsignal (Qfile_error,
|
|
|
2988 list2 (build_translated_string("not a regular file"),
|
|
|
2989 filename));
|
|
|
2990 }
|
|
|
2991 else
|
|
|
2992 {
|
|
|
2993 not_regular = 1;
|
|
|
2994 goto notfound;
|
|
|
2995 }
|
|
|
2996 }
|
|
|
2997 #endif
|
|
|
2998
|
|
|
2999 if (fd < 0)
|
|
16
|
3000 if ((fd = open ((char *) XSTRING_DATA (filename), O_RDONLY, 0)) < 0)
|
|
0
|
3001 goto badopen;
|
|
|
3002
|
|
|
3003 /* Replacement should preserve point as it preserves markers. */
|
|
|
3004 if (!NILP (replace))
|
|
|
3005 record_unwind_protect (restore_point_unwind, Fpoint_marker (Qnil, Qnil));
|
|
|
3006
|
|
|
3007 record_unwind_protect (close_file_unwind, make_int (fd));
|
|
|
3008
|
|
|
3009 /* Supposedly happens on VMS. */
|
|
|
3010 if (st.st_size < 0)
|
|
|
3011 error ("File size is negative");
|
|
|
3012
|
|
|
3013 if (NILP (end))
|
|
|
3014 {
|
|
|
3015 end = make_int (st.st_size);
|
|
|
3016 if (XINT (end) != st.st_size)
|
|
|
3017 error ("maximum buffer size exceeded");
|
|
|
3018 }
|
|
|
3019
|
|
|
3020 /* If requested, replace the accessible part of the buffer
|
|
|
3021 with the file contents. Avoid replacing text at the
|
|
|
3022 beginning or end of the buffer that matches the file contents;
|
|
|
3023 that preserves markers pointing to the unchanged parts. */
|
|
16
|
3024 #if !defined (DOS_NT) && !defined (MULE)
|
|
0
|
3025 /* The replace-mode code currently only works when the assumption
|
|
|
3026 'one byte == one char' holds true. This fails under MSDOS and
|
|
|
3027 Windows NT (because newlines are represented as CR-LF in text
|
|
20
|
3028 files) and under Mule because files may contain multibyte characters. */
|
|
0
|
3029 # define FSFMACS_SPEEDY_INSERT
|
|
|
3030 #endif
|
|
|
3031 #ifndef FSFMACS_SPEEDY_INSERT
|
|
|
3032 if (!NILP (replace))
|
|
|
3033 {
|
|
|
3034 buffer_delete_range (buf, BUF_BEG (buf), BUF_Z (buf),
|
|
|
3035 !NILP (visit) ? INSDEL_NO_LOCKING : 0);
|
|
|
3036 }
|
|
|
3037 #else /* FSFMACS_SPEEDY_INSERT */
|
|
|
3038 if (!NILP (replace))
|
|
|
3039 {
|
|
|
3040 char buffer[1 << 14];
|
|
|
3041 Bufpos same_at_start = BUF_BEGV (buf);
|
|
|
3042 Bufpos same_at_end = BUF_ZV (buf);
|
|
|
3043 int overlap;
|
|
|
3044
|
|
|
3045 /* Count how many chars at the start of the file
|
|
|
3046 match the text at the beginning of the buffer. */
|
|
|
3047 while (1)
|
|
|
3048 {
|
|
|
3049 int nread;
|
|
|
3050 Bufpos bufpos;
|
|
|
3051
|
|
|
3052 nread = read_allowing_quit (fd, buffer, sizeof buffer);
|
|
|
3053 if (nread < 0)
|
|
|
3054 error ("IO error reading %s: %s",
|
|
16
|
3055 XSTRING_DATA (filename), strerror (errno));
|
|
0
|
3056 else if (nread == 0)
|
|
|
3057 break;
|
|
|
3058 bufpos = 0;
|
|
|
3059 while (bufpos < nread && same_at_start < BUF_ZV (buf)
|
|
|
3060 && BUF_FETCH_CHAR (buf, same_at_start) == buffer[bufpos])
|
|
|
3061 same_at_start++, bufpos++;
|
|
|
3062 /* If we found a discrepancy, stop the scan.
|
|
|
3063 Otherwise loop around and scan the next bufferfull. */
|
|
|
3064 if (bufpos != nread)
|
|
|
3065 break;
|
|
|
3066 }
|
|
|
3067 /* If the file matches the buffer completely,
|
|
|
3068 there's no need to replace anything. */
|
|
|
3069 if (same_at_start - BUF_BEGV (buf) == st.st_size)
|
|
|
3070 {
|
|
|
3071 close (fd);
|
|
|
3072 unbind_to (speccount, Qnil);
|
|
|
3073 /* Truncate the buffer to the size of the file. */
|
|
|
3074 buffer_delete_range (buf, same_at_start, same_at_end,
|
|
|
3075 !NILP (visit) ? INSDEL_NO_LOCKING : 0);
|
|
|
3076 goto handled;
|
|
|
3077 }
|
|
|
3078 /* Count how many chars at the end of the file
|
|
|
3079 match the text at the end of the buffer. */
|
|
|
3080 while (1)
|
|
|
3081 {
|
|
|
3082 int total_read, nread;
|
|
|
3083 Bufpos bufpos, curpos, trial;
|
|
|
3084
|
|
|
3085 /* At what file position are we now scanning? */
|
|
|
3086 curpos = st.st_size - (BUF_ZV (buf) - same_at_end);
|
|
|
3087 /* If the entire file matches the buffer tail, stop the scan. */
|
|
|
3088 if (curpos == 0)
|
|
|
3089 break;
|
|
|
3090 /* How much can we scan in the next step? */
|
|
|
3091 trial = min (curpos, sizeof buffer);
|
|
|
3092 if (lseek (fd, curpos - trial, 0) < 0)
|
|
|
3093 report_file_error ("Setting file position",
|
|
|
3094 Fcons (filename, Qnil));
|
|
|
3095
|
|
|
3096 total_read = 0;
|
|
|
3097 while (total_read < trial)
|
|
|
3098 {
|
|
|
3099 nread = read_allowing_quit (fd, buffer + total_read,
|
|
|
3100 trial - total_read);
|
|
|
3101 if (nread <= 0)
|
|
|
3102 error ("IO error reading %s: %s",
|
|
16
|
3103 XSTRING_DATA (filename), strerror (errno));
|
|
0
|
3104 total_read += nread;
|
|
|
3105 }
|
|
|
3106 /* Scan this bufferfull from the end, comparing with
|
|
|
3107 the Emacs buffer. */
|
|
|
3108 bufpos = total_read;
|
|
|
3109 /* Compare with same_at_start to avoid counting some buffer text
|
|
|
3110 as matching both at the file's beginning and at the end. */
|
|
|
3111 while (bufpos > 0 && same_at_end > same_at_start
|
|
|
3112 && BUF_FETCH_CHAR (buf, same_at_end - 1) ==
|
|
|
3113 buffer[bufpos - 1])
|
|
|
3114 same_at_end--, bufpos--;
|
|
|
3115 /* If we found a discrepancy, stop the scan.
|
|
|
3116 Otherwise loop around and scan the preceding bufferfull. */
|
|
|
3117 if (bufpos != 0)
|
|
|
3118 break;
|
|
|
3119 /* If display current starts at beginning of line,
|
|
|
3120 keep it that way. */
|
|
|
3121 if (XBUFFER (XWINDOW (Fselected_window (Qnil))->buffer) == buf)
|
|
|
3122 XWINDOW (Fselected_window (Qnil))->start_at_line_beg =
|
|
|
3123 !NILP (Fbolp (make_buffer (buf)));
|
|
|
3124 }
|
|
|
3125
|
|
|
3126 /* Don't try to reuse the same piece of text twice. */
|
|
|
3127 overlap = same_at_start - BUF_BEGV (buf) -
|
|
|
3128 (same_at_end + st.st_size - BUF_ZV (buf));
|
|
|
3129 if (overlap > 0)
|
|
|
3130 same_at_end += overlap;
|
|
|
3131
|
|
|
3132 /* Arrange to read only the nonmatching middle part of the file. */
|
|
|
3133 beg = make_int (same_at_start - BUF_BEGV (buf));
|
|
|
3134 end = make_int (st.st_size - (BUF_ZV (buf) - same_at_end));
|
|
|
3135
|
|
|
3136 buffer_delete_range (buf, same_at_start, same_at_end,
|
|
|
3137 !NILP (visit) ? INSDEL_NO_LOCKING : 0);
|
|
|
3138 /* Insert from the file at the proper position. */
|
|
|
3139 BUF_SET_PT (buf, same_at_start);
|
|
|
3140 }
|
|
|
3141 #endif /* FSFMACS_SPEEDY_INSERT */
|
|
|
3142
|
|
|
3143 total = XINT (end) - XINT (beg);
|
|
|
3144
|
|
|
3145 if (XINT (beg) != 0
|
|
|
3146 #ifdef FSFMACS_SPEEDY_INSERT
|
|
|
3147 /* why was this here? asked jwz. The reason is that the replace-mode
|
|
|
3148 connivings above will normally put the file pointer other than
|
|
|
3149 where it should be. */
|
|
|
3150 || !NILP (replace)
|
|
|
3151 #endif /* !FSFMACS_SPEEDY_INSERT */
|
|
|
3152 )
|
|
|
3153 {
|
|
|
3154 if (lseek (fd, XINT (beg), 0) < 0)
|
|
|
3155 report_file_error ("Setting file position",
|
|
|
3156 Fcons (filename, Qnil));
|
|
|
3157 }
|
|
|
3158
|
|
|
3159 {
|
|
|
3160 Bufpos cur_point = BUF_PT (buf);
|
|
|
3161 struct gcpro ngcpro1;
|
|
|
3162 Lisp_Object stream = make_filedesc_input_stream (fd, 0, total,
|
|
|
3163 LSTR_ALLOW_QUIT);
|
|
|
3164
|
|
|
3165 NGCPRO1 (stream);
|
|
|
3166 Lstream_set_buffering (XLSTREAM (stream), LSTREAM_BLOCKN_BUFFERED, 65536);
|
|
|
3167
|
|
|
3168 record_unwind_protect (close_stream_unwind, stream);
|
|
|
3169
|
|
16
|
3170 /* No need to limit the amount of stuff we attempt to read. (It would
|
|
|
3171 be incorrect, anyway, when Mule is enabled.) Instead, the limiting
|
|
|
3172 occurs inside of the filedesc stream. */
|
|
0
|
3173 while (1)
|
|
|
3174 {
|
|
|
3175 Bytecount this_len;
|
|
|
3176 Charcount cc_inserted;
|
|
|
3177
|
|
|
3178 QUIT;
|
|
|
3179 this_len = Lstream_read (XLSTREAM (stream), read_buf,
|
|
|
3180 sizeof (read_buf));
|
|
|
3181
|
|
|
3182 if (this_len <= 0)
|
|
|
3183 {
|
|
|
3184 if (this_len < 0)
|
|
|
3185 saverrno = errno;
|
|
|
3186 break;
|
|
|
3187 }
|
|
|
3188
|
|
|
3189 cc_inserted = buffer_insert_raw_string_1 (buf, cur_point, read_buf,
|
|
|
3190 this_len,
|
|
|
3191 !NILP (visit)
|
|
|
3192 ? INSDEL_NO_LOCKING : 0);
|
|
|
3193 inserted += cc_inserted;
|
|
|
3194 cur_point += cc_inserted;
|
|
|
3195 }
|
|
|
3196 NUNGCPRO;
|
|
|
3197 }
|
|
|
3198
|
|
|
3199 #ifdef DOS_NT
|
|
|
3200 /* Determine file type from name and remove LFs from CR-LFs if the file
|
|
|
3201 is deemed to be a text file. */
|
|
|
3202 {
|
|
|
3203 struct gcpro gcpro1;
|
|
|
3204 GCPRO1 (filename);
|
|
|
3205 buf->buffer_file_type
|
|
|
3206 = call1_in_buffer (buf, Qfind_buffer_file_type, filename);
|
|
|
3207 UNGCPRO;
|
|
|
3208 if (NILP (buf->buffer_file_type))
|
|
|
3209 {
|
|
|
3210 buffer_do_msdos_crlf_to_lf (buf, ####);
|
|
|
3211 }
|
|
|
3212 }
|
|
|
3213 #endif
|
|
|
3214
|
|
|
3215 /* Close the file/stream */
|
|
|
3216 unbind_to (speccount, Qnil);
|
|
|
3217
|
|
|
3218 if (saverrno != 0)
|
|
|
3219 {
|
|
|
3220 error ("IO error reading %s: %s",
|
|
16
|
3221 XSTRING_DATA (filename), strerror (saverrno));
|
|
0
|
3222 }
|
|
|
3223
|
|
|
3224 notfound:
|
|
|
3225 handled:
|
|
|
3226
|
|
|
3227 end_multiple_change (buf, mc_count);
|
|
|
3228
|
|
|
3229 if (!NILP (visit))
|
|
|
3230 {
|
|
|
3231 if (!EQ (buf->undo_list, Qt))
|
|
|
3232 buf->undo_list = Qnil;
|
|
|
3233 #ifdef APOLLO
|
|
16
|
3234 stat ((char *) XSTRING_DATA (filename), &st);
|
|
0
|
3235 #endif
|
|
|
3236 if (NILP (handler))
|
|
|
3237 {
|
|
|
3238 buf->modtime = st.st_mtime;
|
|
|
3239 buf->filename = filename;
|
|
|
3240 /* XEmacs addition: */
|
|
|
3241 /* This function used to be in C, ostensibly so that
|
|
|
3242 it could be called here. But that's just silly.
|
|
|
3243 There's no reason C code can't call out to Lisp
|
|
|
3244 code, and it's a lot cleaner this way. */
|
|
|
3245 if (!NILP (Ffboundp (Qcompute_buffer_file_truename)))
|
|
|
3246 call1 (Qcompute_buffer_file_truename, make_buffer (buf));
|
|
|
3247 }
|
|
|
3248 BUF_SAVE_MODIFF (buf) = BUF_MODIFF (buf);
|
|
|
3249 buf->auto_save_modified = BUF_MODIFF (buf);
|
|
|
3250 buf->save_length = make_int (BUF_SIZE (buf));
|
|
|
3251 #ifdef CLASH_DETECTION
|
|
|
3252 if (NILP (handler))
|
|
|
3253 {
|
|
|
3254 if (!NILP (buf->file_truename))
|
|
|
3255 unlock_file (buf->file_truename);
|
|
|
3256 unlock_file (filename);
|
|
|
3257 }
|
|
|
3258 #endif /* CLASH_DETECTION */
|
|
|
3259 if (not_regular)
|
|
|
3260 RETURN_UNGCPRO (Fsignal (Qfile_error,
|
|
|
3261 list2 (build_string ("not a regular file"),
|
|
|
3262 filename)));
|
|
|
3263
|
|
|
3264 /* If visiting nonexistent file, return nil. */
|
|
|
3265 if (buf->modtime == -1)
|
|
|
3266 report_file_error ("Opening input file",
|
|
|
3267 list1 (filename));
|
|
|
3268 }
|
|
|
3269
|
|
|
3270 /* Decode file format */
|
|
|
3271 if (inserted > 0)
|
|
|
3272 {
|
|
|
3273 Lisp_Object insval = call3 (Qformat_decode,
|
|
|
3274 Qnil, make_int (inserted), visit);
|
|
|
3275 CHECK_INT (insval);
|
|
|
3276 inserted = XINT (insval);
|
|
|
3277 }
|
|
|
3278
|
|
|
3279 if (inserted > 0)
|
|
|
3280 {
|
|
|
3281 Lisp_Object p = Vafter_insert_file_functions;
|
|
|
3282 struct gcpro ngcpro1;
|
|
|
3283
|
|
|
3284 NGCPRO1 (p);
|
|
|
3285 while (!NILP (p))
|
|
|
3286 {
|
|
|
3287 Lisp_Object insval =
|
|
|
3288 call1 (Fcar (p), make_int (inserted));
|
|
|
3289 if (!NILP (insval))
|
|
|
3290 {
|
|
|
3291 CHECK_NATNUM (insval);
|
|
|
3292 inserted = XINT (insval);
|
|
|
3293 }
|
|
|
3294 QUIT;
|
|
|
3295 p = Fcdr (p);
|
|
|
3296 }
|
|
|
3297 NUNGCPRO;
|
|
|
3298 }
|
|
|
3299
|
|
|
3300 UNGCPRO;
|
|
|
3301
|
|
|
3302 if (!NILP (val))
|
|
|
3303 return (val);
|
|
|
3304 else
|
|
|
3305 return (list2 (filename, make_int (inserted)));
|
|
|
3306 }
|
|
|
3307
|
|
|
3308
|
|
|
3309 static int a_write (Lisp_Object outstream, Lisp_Object instream, int pos,
|
|
|
3310 Lisp_Object *annot);
|
|
|
3311 static Lisp_Object build_annotations (Lisp_Object start, Lisp_Object end);
|
|
|
3312
|
|
|
3313 /* If build_annotations switched buffers, switch back to BUF.
|
|
|
3314 Kill the temporary buffer that was selected in the meantime. */
|
|
|
3315
|
|
|
3316 static Lisp_Object
|
|
|
3317 build_annotations_unwind (Lisp_Object buf)
|
|
|
3318 {
|
|
|
3319 Lisp_Object tembuf;
|
|
|
3320
|
|
|
3321 if (XBUFFER (buf) == current_buffer)
|
|
|
3322 return Qnil;
|
|
|
3323 tembuf = Fcurrent_buffer ();
|
|
|
3324 Fset_buffer (buf);
|
|
|
3325 Fkill_buffer (tembuf);
|
|
|
3326 return Qnil;
|
|
|
3327 }
|
|
|
3328
|
|
20
|
3329 DEFUN ("write-region-internal", Fwrite_region_internal, 3, 6,
|
|
|
3330 "r\nFWrite region to file: ", /*
|
|
0
|
3331 Write current region into specified file.
|
|
|
3332 When called from a program, takes three arguments:
|
|
|
3333 START, END and FILENAME. START and END are buffer positions.
|
|
|
3334 Optional fourth argument APPEND if non-nil means
|
|
|
3335 append to existing file contents (if any).
|
|
|
3336 Optional fifth argument VISIT if t means
|
|
|
3337 set the last-save-file-modtime of buffer to this file's modtime
|
|
|
3338 and mark buffer not modified.
|
|
|
3339 If VISIT is a string, it is a second file name;
|
|
|
3340 the output goes to FILENAME, but the buffer is marked as visiting VISIT.
|
|
|
3341 VISIT is also the file name to lock and unlock for clash detection.
|
|
|
3342 If VISIT is neither t nor nil nor a string,
|
|
|
3343 that means do not print the \"Wrote file\" message.
|
|
|
3344 Kludgy feature: if START is a string, then that string is written
|
|
|
3345 to the file, instead of any buffer contents, and END is ignored.
|
|
20
|
3346 */
|
|
|
3347 (start, end, filename, append, visit, lockname))
|
|
0
|
3348 {
|
|
44
|
3349 /* This function can call lisp */
|
|
0
|
3350 int desc;
|
|
|
3351 int failure;
|
|
|
3352 int save_errno = 0;
|
|
|
3353 struct stat st;
|
|
|
3354 Lisp_Object fn;
|
|
|
3355 int speccount = specpdl_depth ();
|
|
|
3356 #ifdef VMS
|
|
|
3357 unsigned char *fname = 0; /* If non-0, original filename (must rename) */
|
|
|
3358 #endif /* VMS */
|
|
|
3359 int visiting_other = STRINGP (visit);
|
|
|
3360 int visiting = (EQ (visit, Qt) || visiting_other);
|
|
|
3361 int quietly = (!visiting && !NILP (visit));
|
|
|
3362 Lisp_Object visit_file = Qnil;
|
|
|
3363 Lisp_Object annotations = Qnil;
|
|
|
3364 struct buffer *given_buffer;
|
|
|
3365 Bufpos start1, end1;
|
|
|
3366
|
|
40
|
3367 /* #### dmoore - if Fexpand_file_name or handlers kill the buffer,
|
|
|
3368 we should signal an error rather than blissfully continuing
|
|
|
3369 along. ARGH, this function is going to lose lose lose. We need
|
|
|
3370 to protect the current_buffer from being destroyed, but the
|
|
|
3371 multiple return points make this a pain in the butt. */
|
|
|
3372
|
|
0
|
3373 #ifdef DOS_NT
|
|
|
3374 int buffer_file_type
|
|
|
3375 = NILP (current_buffer->buffer_file_type) ? O_TEXT : O_BINARY;
|
|
|
3376 #endif /* DOS_NT */
|
|
|
3377
|
|
|
3378 if (current_buffer->base_buffer && ! NILP (visit))
|
|
|
3379 error ("Cannot do file visiting in an indirect buffer");
|
|
|
3380
|
|
|
3381 if (!NILP (start) && !STRINGP (start))
|
|
|
3382 get_buffer_range_char (current_buffer, start, end, &start1, &end1, 0);
|
|
|
3383
|
|
|
3384 {
|
|
|
3385 Lisp_Object handler;
|
|
|
3386 struct gcpro gcpro1, gcpro2, gcpro3, gcpro4, gcpro5;
|
|
40
|
3387
|
|
0
|
3388 GCPRO5 (start, filename, visit, visit_file, lockname);
|
|
|
3389
|
|
|
3390 if (visiting_other)
|
|
|
3391 visit_file = Fexpand_file_name (visit, Qnil);
|
|
|
3392 else
|
|
|
3393 visit_file = filename;
|
|
|
3394 filename = Fexpand_file_name (filename, Qnil);
|
|
|
3395
|
|
|
3396 UNGCPRO;
|
|
|
3397
|
|
|
3398 if (NILP (lockname))
|
|
|
3399 lockname = visit_file;
|
|
|
3400
|
|
|
3401 /* If the file name has special constructs in it,
|
|
|
3402 call the corresponding file handler. */
|
|
|
3403 handler = Ffind_file_name_handler (filename, Qwrite_region);
|
|
|
3404 /* If FILENAME has no handler, see if VISIT has one. */
|
|
|
3405 if (NILP (handler) && STRINGP (visit))
|
|
|
3406 handler = Ffind_file_name_handler (visit, Qwrite_region);
|
|
|
3407
|
|
|
3408 if (!NILP (handler))
|
|
|
3409 {
|
|
|
3410 Lisp_Object val = call6 (handler, Qwrite_region, start, end,
|
|
|
3411 filename, append, visit);
|
|
|
3412 if (visiting)
|
|
|
3413 {
|
|
|
3414 BUF_SAVE_MODIFF (current_buffer) = BUF_MODIFF (current_buffer);
|
|
|
3415 current_buffer->save_length =
|
|
|
3416 make_int (BUF_SIZE (current_buffer));
|
|
|
3417 current_buffer->filename = visit_file;
|
|
|
3418 MARK_MODELINE_CHANGED;
|
|
|
3419 }
|
|
|
3420 return val;
|
|
|
3421 }
|
|
|
3422 }
|
|
|
3423
|
|
|
3424 #ifdef CLASH_DETECTION
|
|
|
3425 if (!auto_saving)
|
|
|
3426 {
|
|
40
|
3427 Lisp_Object curbuf;
|
|
|
3428 struct gcpro gcpro1, gcpro2, gcpro3, gcpro4, gcpro5;
|
|
|
3429
|
|
|
3430 XSETBUFFER (curbuf, current_buffer);
|
|
|
3431 GCPRO5 (start, filename, visit_file, lockname, curbuf);
|
|
0
|
3432 lock_file (lockname);
|
|
|
3433 UNGCPRO;
|
|
|
3434 }
|
|
|
3435 #endif /* CLASH_DETECTION */
|
|
|
3436
|
|
|
3437 /* Special kludge to simplify auto-saving. */
|
|
|
3438 if (NILP (start))
|
|
|
3439 {
|
|
|
3440 start1 = BUF_BEG (current_buffer);
|
|
|
3441 end1 = BUF_Z (current_buffer);
|
|
|
3442 }
|
|
|
3443
|
|
|
3444 record_unwind_protect (build_annotations_unwind, Fcurrent_buffer ());
|
|
|
3445
|
|
|
3446 given_buffer = current_buffer;
|
|
|
3447 annotations = build_annotations (start, end);
|
|
|
3448 if (current_buffer != given_buffer)
|
|
|
3449 {
|
|
|
3450 start1 = BUF_BEGV (current_buffer);
|
|
|
3451 end1 = BUF_ZV (current_buffer);
|
|
|
3452 }
|
|
|
3453
|
|
|
3454 fn = filename;
|
|
|
3455 desc = -1;
|
|
|
3456 if (!NILP (append))
|
|
|
3457 #ifdef DOS_NT
|
|
16
|
3458 desc = open ((char *) XSTRING_DATA (fn),
|
|
0
|
3459 (O_WRONLY | buffer_file_type), 0);
|
|
|
3460 #else /* not DOS_NT */
|
|
16
|
3461 desc = open ((char *) XSTRING_DATA (fn), O_WRONLY, 0);
|
|
0
|
3462 #endif /* not DOS_NT */
|
|
|
3463
|
|
|
3464 if (desc < 0)
|
|
|
3465 #ifndef VMS
|
|
|
3466 {
|
|
|
3467 #ifdef DOS_NT
|
|
16
|
3468 desc = open ((char *) XSTRING_DATA (fn),
|
|
0
|
3469 (O_WRONLY | O_TRUNC | O_CREAT | buffer_file_type),
|
|
|
3470 (S_IREAD | S_IWRITE));
|
|
|
3471 #else /* not DOS_NT */
|
|
16
|
3472 desc = creat ((char *) XSTRING_DATA (fn),
|
|
0
|
3473 ((auto_saving) ? auto_save_mode_bits : 0666));
|
|
|
3474 #endif /* DOS_NT */
|
|
|
3475 }
|
|
|
3476 #else /* VMS */
|
|
|
3477 {
|
|
|
3478 if (auto_saving) /* Overwrite any previous version of autosave file */
|
|
|
3479 {
|
|
16
|
3480 char *fn_data = XSTRING_DATA (fn);
|
|
0
|
3481 /* if fn exists, truncate to zero length */
|
|
|
3482 vms_truncate (fn_data);
|
|
|
3483 desc = open (fn_data, O_RDWR, 0);
|
|
|
3484 if (desc < 0)
|
|
|
3485 desc = creat_copy_attrs ((STRINGP (current_buffer->filename)
|
|
16
|
3486 ? (char *)
|
|
|
3487 XSTRING_DATA (current_buffer->filename)
|
|
0
|
3488 : 0),
|
|
|
3489 fn_data);
|
|
|
3490 }
|
|
|
3491 else /* Write to temporary name and rename if no errors */
|
|
|
3492 {
|
|
|
3493 Lisp_Object temp_name;
|
|
|
3494
|
|
|
3495 struct gcpro gcpro1, gcpro2, gcpro3;
|
|
|
3496 GCPRO3 (start, filename, visit_file);
|
|
|
3497 {
|
|
|
3498 struct gcpro gcpro1, gcpro2, gcpro3; /* Don't have GCPRO6 */
|
|
|
3499
|
|
|
3500 GCPRO3 (fn, fname, annotations);
|
|
|
3501
|
|
|
3502 temp_name = Ffile_name_directory (filename);
|
|
|
3503
|
|
|
3504 if (NILP (temp_name))
|
|
16
|
3505 desc = creat ((char *) XSTRING_DATA (fn), 0666);
|
|
0
|
3506 else
|
|
|
3507 {
|
|
|
3508 temp_name =
|
|
|
3509 Fmake_temp_name (concat2 (temp_name,
|
|
|
3510 build_string ("$$SAVE$$")));
|
|
|
3511 fname = filename;
|
|
|
3512 fn = temp_name;
|
|
|
3513 desc = creat_copy_attrs (fname,
|
|
16
|
3514 (char *) XSTRING_DATA (fn));
|
|
0
|
3515 if (desc < 0)
|
|
|
3516 {
|
|
|
3517 char *fn_data;
|
|
|
3518 /* If we can't open the temporary file, try creating a new
|
|
|
3519 version of the original file. VMS "creat" creates a
|
|
|
3520 new version rather than truncating an existing file. */
|
|
|
3521 fn = fname;
|
|
|
3522 fname = Qnil;
|
|
16
|
3523 fn_data = XSTRING_DATA (fn);
|
|
0
|
3524 desc = creat (fn_data, 0666);
|
|
|
3525 #if 0 /* This can clobber an existing file and fail
|
|
|
3526 to replace it, if the user runs out of
|
|
|
3527 space. */
|
|
|
3528 if (desc < 0)
|
|
|
3529 {
|
|
|
3530 /* We can't make a new version;
|
|
|
3531 try to truncate and rewrite existing version if any.
|
|
|
3532 */
|
|
|
3533 vms_truncate (fn_data);
|
|
|
3534 desc = open (fn_data, O_RDWR, 0);
|
|
|
3535 }
|
|
|
3536 #endif
|
|
|
3537 }
|
|
|
3538 }
|
|
|
3539 UNGCPRO;
|
|
|
3540 }
|
|
|
3541 UNGCPRO;
|
|
|
3542 }
|
|
|
3543 }
|
|
|
3544 #endif /* VMS */
|
|
|
3545
|
|
|
3546 if (desc < 0)
|
|
|
3547 {
|
|
|
3548 #ifdef CLASH_DETECTION
|
|
|
3549 save_errno = errno;
|
|
|
3550 if (!auto_saving) unlock_file (lockname);
|
|
|
3551 errno = save_errno;
|
|
|
3552 #endif /* CLASH_DETECTION */
|
|
|
3553 report_file_error ("Opening output file",
|
|
|
3554 Fcons (filename, Qnil));
|
|
|
3555 }
|
|
|
3556
|
|
|
3557 {
|
|
|
3558 Lisp_Object desc_locative = Fcons (make_int (desc), Qnil);
|
|
|
3559 Lisp_Object instream = Qnil, outstream = Qnil;
|
|
|
3560 struct gcpro gcpro1, gcpro2;
|
|
|
3561 /* need to gcpro; QUIT could happen out of call to write() */
|
|
|
3562 GCPRO2 (instream, outstream);
|
|
|
3563
|
|
|
3564 record_unwind_protect (close_file_unwind, desc_locative);
|
|
|
3565
|
|
|
3566 if (!NILP (append))
|
|
|
3567 {
|
|
|
3568 if (lseek (desc, 0, 2) < 0)
|
|
|
3569 {
|
|
|
3570 #ifdef CLASH_DETECTION
|
|
|
3571 if (!auto_saving) unlock_file (lockname);
|
|
|
3572 #endif /* CLASH_DETECTION */
|
|
|
3573 report_file_error ("Lseek error",
|
|
|
3574 list1 (filename));
|
|
|
3575 }
|
|
|
3576 }
|
|
|
3577
|
|
|
3578 #ifdef VMS
|
|
|
3579 /*
|
|
|
3580 * Kludge Warning: The VMS C RTL likes to insert carriage returns
|
|
|
3581 * if we do writes that don't end with a carriage return. Furthermore
|
|
|
3582 * it cannot handle writes of more then 16K. The modified
|
|
|
3583 * version of "sys_write" in SYSDEP.C (see comment there) copes with
|
|
|
3584 * this EXCEPT for the last record (iff it doesn't end with a carriage
|
|
|
3585 * return). This implies that if your buffer doesn't end with a carriage
|
|
|
3586 * return, you get one free... tough. However it also means that if
|
|
|
3587 * we make two calls to sys_write (a la the following code) you can
|
|
|
3588 * get one at the gap as well. The easiest way to fix this (honest)
|
|
|
3589 * is to move the gap to the next newline (or the end of the buffer).
|
|
|
3590 * Thus this change.
|
|
|
3591 *
|
|
|
3592 * Yech!
|
|
|
3593 */
|
|
|
3594 you lose -- fix this
|
|
|
3595 if (GPT > BUF_BEG (current_buffer) && *GPT_ADDR[-1] != '\n')
|
|
|
3596 move_gap (find_next_newline (current_buffer, GPT, 1));
|
|
|
3597 #endif
|
|
|
3598
|
|
|
3599 failure = 0;
|
|
|
3600
|
|
|
3601 /* Note: I tried increasing the buffering size, along with
|
|
|
3602 various other tricks, but nothing seemed to make much of
|
|
|
3603 a difference in the time it took to save a large file.
|
|
|
3604 (Actually that's not true. With a local disk, changing
|
|
|
3605 the buffer size doesn't seem to make much difference.
|
|
|
3606 With an NFS-mounted disk, it could make a lot of difference
|
|
|
3607 because you're affecting the number of network requests
|
|
|
3608 that need to be made, and there could be a large latency
|
|
|
3609 for each request. So I've increased the buffer size
|
|
|
3610 to 64K.) */
|
|
|
3611 outstream = make_filedesc_output_stream (desc, 0, -1, 0);
|
|
|
3612 Lstream_set_buffering (XLSTREAM (outstream),
|
|
|
3613 LSTREAM_BLOCKN_BUFFERED, 65536);
|
|
|
3614 if (STRINGP (start))
|
|
|
3615 {
|
|
|
3616 instream = make_lisp_string_input_stream (start, 0, -1);
|
|
|
3617 start1 = 0;
|
|
|
3618 }
|
|
|
3619 else
|
|
|
3620 instream = make_lisp_buffer_input_stream (current_buffer, start1, end1,
|
|
|
3621 LSTR_SELECTIVE |
|
|
|
3622 LSTR_IGNORE_ACCESSIBLE);
|
|
|
3623 failure = (0 > (a_write (outstream, instream, start1,
|
|
|
3624 &annotations)));
|
|
|
3625 save_errno = errno;
|
|
|
3626 /* Note that this doesn't close the desc since we created the
|
|
|
3627 stream without the LSTR_CLOSING flag, but it does
|
|
|
3628 flush out any buffered data. */
|
|
|
3629 if (Lstream_close (XLSTREAM (outstream)) < 0)
|
|
|
3630 {
|
|
|
3631 failure = 1;
|
|
|
3632 save_errno = errno;
|
|
|
3633 }
|
|
|
3634 Lstream_close (XLSTREAM (instream));
|
|
|
3635 UNGCPRO;
|
|
|
3636
|
|
|
3637 #ifdef HAVE_FSYNC
|
|
|
3638 /* Note fsync appears to change the modtime on BSD4.2 (both vax and sun).
|
|
|
3639 Disk full in NFS may be reported here. */
|
|
|
3640 /* mib says that closing the file will try to write as fast as NFS can do
|
|
|
3641 it, and that means the fsync here is not crucial for autosave files. */
|
|
|
3642 if (!auto_saving && fsync (desc) < 0
|
|
|
3643 /* If fsync fails with EINTR, don't treat that as serious. */
|
|
|
3644 && errno != EINTR)
|
|
|
3645 {
|
|
|
3646 failure = 1;
|
|
|
3647 save_errno = errno;
|
|
|
3648 }
|
|
|
3649 #endif
|
|
|
3650
|
|
|
3651 /* Spurious "file has changed on disk" warnings have been
|
|
|
3652 observed on Suns as well.
|
|
|
3653 It seems that `close' can change the modtime, under nfs.
|
|
|
3654
|
|
|
3655 (This has supposedly been fixed in Sunos 4,
|
|
|
3656 but who knows about all the other machines with NFS?) */
|
|
|
3657 /* On VMS and APOLLO, must do the stat after the close
|
|
|
3658 since closing changes the modtime. */
|
|
|
3659 #if 0 /* !defined (VMS) && !defined (APOLLO) */
|
|
|
3660 fstat (desc, &st);
|
|
|
3661 #endif
|
|
|
3662
|
|
|
3663 /* NFS can report a write failure now. */
|
|
|
3664 if (close (desc) < 0)
|
|
|
3665 {
|
|
|
3666 failure = 1;
|
|
|
3667 save_errno = errno;
|
|
|
3668 }
|
|
|
3669
|
|
|
3670 /* Discard the close unwind-protect. Execute the one for
|
|
|
3671 build_annotations (switches back to the original current buffer
|
|
|
3672 as necessary). */
|
|
|
3673 XCAR (desc_locative) = Qnil;
|
|
|
3674 unbind_to (speccount, Qnil);
|
|
|
3675 }
|
|
|
3676
|
|
|
3677
|
|
|
3678 #ifdef VMS
|
|
|
3679 /* If we wrote to a temporary name and had no errors, rename to real name. */
|
|
|
3680 if (!NILP (fname))
|
|
|
3681 {
|
|
|
3682 if (!failure)
|
|
|
3683 {
|
|
16
|
3684 failure = (rename ((char *) XSTRING_DATA (fn),
|
|
|
3685 (char *) XSTRING_DATA (fname))
|
|
0
|
3686 != 0);
|
|
|
3687 save_errno = errno;
|
|
|
3688 }
|
|
|
3689 fn = fname;
|
|
|
3690 }
|
|
|
3691 #endif /* VMS */
|
|
|
3692
|
|
|
3693 #if 1 /* defined (VMS) || defined (APOLLO) */
|
|
16
|
3694 stat ((char *) XSTRING_DATA (fn), &st);
|
|
0
|
3695 #endif
|
|
|
3696
|
|
|
3697 #ifdef CLASH_DETECTION
|
|
|
3698 if (!auto_saving)
|
|
|
3699 unlock_file (lockname);
|
|
|
3700 #endif /* CLASH_DETECTION */
|
|
|
3701
|
|
|
3702 /* Do this before reporting IO error
|
|
|
3703 to avoid a "file has changed on disk" warning on
|
|
|
3704 next attempt to save. */
|
|
|
3705 if (visiting)
|
|
|
3706 current_buffer->modtime = st.st_mtime;
|
|
|
3707
|
|
|
3708 if (failure)
|
|
|
3709 error ("IO error writing %s: %s",
|
|
16
|
3710 XSTRING_DATA (fn),
|
|
0
|
3711 strerror (save_errno));
|
|
|
3712
|
|
|
3713 if (visiting)
|
|
|
3714 {
|
|
|
3715 BUF_SAVE_MODIFF (current_buffer) = BUF_MODIFF (current_buffer);
|
|
|
3716 current_buffer->save_length = make_int (BUF_SIZE (current_buffer));
|
|
|
3717 current_buffer->filename = visit_file;
|
|
|
3718 MARK_MODELINE_CHANGED;
|
|
|
3719 }
|
|
|
3720 else if (quietly)
|
|
|
3721 {
|
|
|
3722 return Qnil;
|
|
|
3723 }
|
|
|
3724
|
|
|
3725 if (!auto_saving)
|
|
|
3726 {
|
|
|
3727 if (visiting_other)
|
|
16
|
3728 message ("Wrote %s", XSTRING_DATA (visit_file));
|
|
0
|
3729 else
|
|
|
3730 {
|
|
|
3731 struct gcpro gcpro1;
|
|
|
3732 Lisp_Object fsp;
|
|
|
3733 GCPRO1 (fn);
|
|
|
3734
|
|
|
3735 fsp = Ffile_symlink_p (fn);
|
|
|
3736 if (NILP (fsp))
|
|
16
|
3737 message ("Wrote %s", XSTRING_DATA (fn));
|
|
0
|
3738 else
|
|
|
3739 message ("Wrote %s (symlink to %s)",
|
|
16
|
3740 XSTRING_DATA (fn), XSTRING_DATA (fsp));
|
|
0
|
3741 UNGCPRO;
|
|
|
3742 }
|
|
|
3743 }
|
|
|
3744 return Qnil;
|
|
|
3745 }
|
|
|
3746
|
|
|
3747 /* #### This is such a load of shit!!!! There is no way we should define
|
|
|
3748 something so stupid as a subr, just sort the fucking list more
|
|
|
3749 intelligently. */
|
|
20
|
3750 DEFUN ("car-less-than-car", Fcar_less_than_car, 2, 2, 0, /*
|
|
0
|
3751 Return t if (car A) is numerically less than (car B).
|
|
20
|
3752 */
|
|
|
3753 (a, b))
|
|
0
|
3754 {
|
|
|
3755 return Flss (Fcar (a), Fcar (b));
|
|
|
3756 }
|
|
|
3757
|
|
|
3758 /* Heh heh heh, let's define this too, just to aggravate the person who
|
|
|
3759 wrote the above comment. */
|
|
20
|
3760 DEFUN ("cdr-less-than-cdr", Fcdr_less_than_cdr, 2, 2, 0, /*
|
|
0
|
3761 Return t if (cdr A) is numerically less than (cdr B).
|
|
20
|
3762 */
|
|
|
3763 (a, b))
|
|
0
|
3764 {
|
|
|
3765 return Flss (Fcdr (a), Fcdr (b));
|
|
|
3766 }
|
|
|
3767
|
|
|
3768 /* Build the complete list of annotations appropriate for writing out
|
|
|
3769 the text between START and END, by calling all the functions in
|
|
|
3770 write-region-annotate-functions and merging the lists they return.
|
|
|
3771 If one of these functions switches to a different buffer, we assume
|
|
|
3772 that buffer contains altered text. Therefore, the caller must
|
|
|
3773 make sure to restore the current buffer in all cases,
|
|
|
3774 as save-excursion would do. */
|
|
|
3775
|
|
|
3776 static Lisp_Object
|
|
|
3777 build_annotations (Lisp_Object start, Lisp_Object end)
|
|
|
3778 {
|
|
|
3779 /* This function can GC */
|
|
|
3780 Lisp_Object annotations;
|
|
|
3781 Lisp_Object p, res;
|
|
|
3782 struct gcpro gcpro1, gcpro2;
|
|
|
3783
|
|
|
3784 annotations = Qnil;
|
|
|
3785 p = Vwrite_region_annotate_functions;
|
|
|
3786 GCPRO2 (annotations, p);
|
|
|
3787 while (!NILP (p))
|
|
|
3788 {
|
|
|
3789 struct buffer *given_buffer = current_buffer;
|
|
|
3790 Vwrite_region_annotations_so_far = annotations;
|
|
|
3791 res = call2 (Fcar (p), start, end);
|
|
|
3792 /* If the function makes a different buffer current,
|
|
|
3793 assume that means this buffer contains altered text to be output.
|
|
|
3794 Reset START and END from the buffer bounds
|
|
|
3795 and discard all previous annotations because they should have
|
|
|
3796 been dealt with by this function. */
|
|
|
3797 if (current_buffer != given_buffer)
|
|
|
3798 {
|
|
|
3799 start = make_int (BUF_BEGV (current_buffer));
|
|
|
3800 end = make_int (BUF_ZV (current_buffer));
|
|
|
3801 annotations = Qnil;
|
|
|
3802 }
|
|
|
3803 (void) Flength (res); /* Check basic validity of return value */
|
|
|
3804 annotations = merge (annotations, res, Qcar_less_than_car);
|
|
|
3805 p = Fcdr (p);
|
|
|
3806 }
|
|
|
3807
|
|
|
3808 /* Now do the same for annotation functions implied by the file-format */
|
|
|
3809 if (auto_saving && (!EQ (Vauto_save_file_format, Qt)))
|
|
|
3810 p = Vauto_save_file_format;
|
|
|
3811 else
|
|
|
3812 p = current_buffer->file_format;
|
|
|
3813 while (!NILP (p))
|
|
|
3814 {
|
|
|
3815 struct buffer *given_buffer = current_buffer;
|
|
|
3816 Vwrite_region_annotations_so_far = annotations;
|
|
|
3817 res = call3 (Qformat_annotate_function, Fcar (p), start, end);
|
|
|
3818 if (current_buffer != given_buffer)
|
|
|
3819 {
|
|
|
3820 start = make_int (BUF_BEGV (current_buffer));
|
|
|
3821 end = make_int (BUF_ZV (current_buffer));
|
|
|
3822 annotations = Qnil;
|
|
|
3823 }
|
|
|
3824 (void) Flength (res);
|
|
|
3825 annotations = merge (annotations, res, Qcar_less_than_car);
|
|
|
3826 p = Fcdr (p);
|
|
|
3827 }
|
|
|
3828 UNGCPRO;
|
|
|
3829 return annotations;
|
|
|
3830 }
|
|
|
3831
|
|
|
3832 /* Write to stream OUTSTREAM the characters from INSTREAM (it is read until
|
|
|
3833 EOF is encountered), assuming they start at position POS in the buffer
|
|
|
3834 of string that STREAM refers to. Intersperse with them the annotations
|
|
|
3835 from *ANNOT that fall into the range of positions we are reading from,
|
|
|
3836 each at its appropriate position.
|
|
|
3837
|
|
|
3838 Modify *ANNOT by discarding elements as we output them.
|
|
|
3839 The return value is negative in case of system call failure. */
|
|
|
3840
|
|
|
3841 /* 4K should probably be fine. We just need to reduce the number of
|
|
|
3842 function calls to reasonable level. The Lstream stuff itself will
|
|
|
3843 batch to 64K to reduce the number of system calls. */
|
|
|
3844
|
|
|
3845 #define A_WRITE_BATCH_SIZE 4096
|
|
|
3846
|
|
|
3847 static int
|
|
|
3848 a_write (Lisp_Object outstream, Lisp_Object instream, int pos,
|
|
|
3849 Lisp_Object *annot)
|
|
|
3850 {
|
|
|
3851 Lisp_Object tem;
|
|
|
3852 int nextpos;
|
|
|
3853 unsigned char largebuf[A_WRITE_BATCH_SIZE];
|
|
|
3854 Lstream *instr = XLSTREAM (instream);
|
|
|
3855 Lstream *outstr = XLSTREAM (outstream);
|
|
|
3856
|
|
|
3857 while (NILP (*annot) || CONSP (*annot))
|
|
|
3858 {
|
|
|
3859 tem = Fcar_safe (Fcar (*annot));
|
|
|
3860 if (INTP (tem))
|
|
|
3861 nextpos = XINT (tem);
|
|
|
3862 else
|
|
|
3863 nextpos = INT_MAX;
|
|
|
3864 {
|
|
|
3865 while (pos != nextpos)
|
|
|
3866 {
|
|
|
3867 /* Otherwise there is no point to that. Just go in batches. */
|
|
|
3868 int chunk = min (nextpos - pos, A_WRITE_BATCH_SIZE);
|
|
|
3869
|
|
|
3870 chunk = Lstream_read (instr, largebuf, chunk);
|
|
|
3871 if (chunk < 0)
|
|
|
3872 return -1;
|
|
|
3873 if (chunk == 0) /* EOF */
|
|
|
3874 break;
|
|
|
3875 if (Lstream_write (outstr, largebuf, chunk) < chunk)
|
|
|
3876 return -1;
|
|
|
3877 pos += chunk;
|
|
|
3878 }
|
|
|
3879 }
|
|
|
3880 if (pos == nextpos)
|
|
|
3881 {
|
|
|
3882 tem = Fcdr (Fcar (*annot));
|
|
|
3883 if (STRINGP (tem))
|
|
|
3884 {
|
|
16
|
3885 if (Lstream_write (outstr, XSTRING_DATA (tem),
|
|
|
3886 XSTRING_LENGTH (tem)) < 0)
|
|
0
|
3887 return -1;
|
|
|
3888 }
|
|
|
3889 *annot = Fcdr (*annot);
|
|
|
3890 }
|
|
|
3891 else
|
|
|
3892 return 0;
|
|
|
3893 }
|
|
|
3894 return -1;
|
|
|
3895 }
|
|
|
3896
|
|
|
3897
|
|
|
3898
|
|
|
3899 #if 0
|
|
|
3900 #include <des_crypt.h>
|
|
|
3901
|
|
|
3902 #define CRYPT_BLOCK_SIZE 8 /* bytes */
|
|
|
3903 #define CRYPT_KEY_SIZE 8 /* bytes */
|
|
|
3904
|
|
20
|
3905 DEFUN ("encrypt-string", Fencrypt_string, 2, 2, 0, /*
|
|
0
|
3906 Encrypt STRING using KEY.
|
|
20
|
3907 */
|
|
|
3908 (string, key))
|
|
0
|
3909 {
|
|
|
3910 char *encrypted_string, *raw_key;
|
|
|
3911 int rounded_size, extra, key_size;
|
|
|
3912
|
|
|
3913 /* !!#### May produce bogus data under Mule. */
|
|
|
3914 CHECK_STRING (string);
|
|
|
3915 CHECK_STRING (key);
|
|
|
3916
|
|
16
|
3917 extra = XSTRING_LENGTH (string) % CRYPT_BLOCK_SIZE;
|
|
|
3918 rounded_size = XSTRING_LENGTH (string) + extra;
|
|
0
|
3919 encrypted_string = alloca (rounded_size + 1);
|
|
16
|
3920 memcpy (encrypted_string, XSTRING_DATA (string), XSTRING_LENGTH (string));
|
|
0
|
3921 memset (encrypted_string + rounded_size - extra, 0, extra + 1);
|
|
|
3922
|
|
16
|
3923 if (XSTRING_LENGTH (key) > CRYPT_KEY_SIZE)
|
|
0
|
3924 key_size = CRYPT_KEY_SIZE;
|
|
|
3925 else
|
|
16
|
3926 key_size = XSTRING_LENGTH (key);
|
|
0
|
3927
|
|
|
3928 raw_key = alloca (CRYPT_KEY_SIZE + 1);
|
|
16
|
3929 memcpy (raw_key, XSTRING_DATA (key), key_size);
|
|
0
|
3930 memset (raw_key + key_size, 0, (CRYPT_KEY_SIZE + 1) - key_size);
|
|
|
3931
|
|
|
3932 (void) ecb_crypt (raw_key, encrypted_string, rounded_size,
|
|
|
3933 DES_ENCRYPT | DES_SW);
|
|
|
3934 return make_string (encrypted_string, rounded_size);
|
|
|
3935 }
|
|
|
3936
|
|
20
|
3937 DEFUN ("decrypt-string", Fdecrypt_string, 2, 2, 0, /*
|
|
0
|
3938 Decrypt STRING using KEY.
|
|
20
|
3939 */
|
|
|
3940 (string, key))
|
|
0
|
3941 {
|
|
|
3942 char *decrypted_string, *raw_key;
|
|
|
3943 int string_size, key_size;
|
|
|
3944
|
|
|
3945 CHECK_STRING (string);
|
|
|
3946 CHECK_STRING (key);
|
|
|
3947
|
|
16
|
3948 string_size = XSTRING_LENGTH (string) + 1;
|
|
0
|
3949 decrypted_string = alloca (string_size);
|
|
16
|
3950 memcpy (decrypted_string, XSTRING_DATA (string), string_size);
|
|
0
|
3951 decrypted_string[string_size - 1] = '\0';
|
|
|
3952
|
|
16
|
3953 if (XSTRING_LENGTH (key) > CRYPT_KEY_SIZE)
|
|
0
|
3954 key_size = CRYPT_KEY_SIZE;
|
|
|
3955 else
|
|
16
|
3956 key_size = XSTRING_LENGTH (key);
|
|
0
|
3957
|
|
|
3958 raw_key = alloca (CRYPT_KEY_SIZE + 1);
|
|
16
|
3959 memcpy (raw_key, XSTRING_DATA (key), key_size);
|
|
0
|
3960 memset (raw_key + key_size, 0, (CRYPT_KEY_SIZE + 1) - key_size);
|
|
|
3961
|
|
|
3962
|
|
|
3963 (void) ecb_crypt (raw_key, decrypted_string, string_size,
|
|
|
3964 DES_DECRYPT | DES_SW);
|
|
|
3965 return make_string (decrypted_string, string_size - 1);
|
|
|
3966 }
|
|
|
3967 #endif
|
|
|
3968
|
|
|
3969
|
|
20
|
3970 DEFUN ("verify-visited-file-modtime", Fverify_visited_file_modtime, 1, 1, 0, /*
|
|
0
|
3971 Return t if last mod time of BUF's visited file matches what BUF records.
|
|
|
3972 This means that the file has not been changed since it was visited or saved.
|
|
20
|
3973 */
|
|
|
3974 (buf))
|
|
0
|
3975 {
|
|
44
|
3976 /* This function can call lisp */
|
|
0
|
3977 struct buffer *b;
|
|
|
3978 struct stat st;
|
|
|
3979 Lisp_Object handler;
|
|
|
3980
|
|
|
3981 CHECK_BUFFER (buf);
|
|
|
3982 b = XBUFFER (buf);
|
|
|
3983
|
|
|
3984 if (!STRINGP (b->filename)) return Qt;
|
|
|
3985 if (b->modtime == 0) return Qt;
|
|
|
3986
|
|
|
3987 /* If the file name has special constructs in it,
|
|
|
3988 call the corresponding file handler. */
|
|
|
3989 handler = Ffind_file_name_handler (b->filename,
|
|
|
3990 Qverify_visited_file_modtime);
|
|
|
3991 if (!NILP (handler))
|
|
|
3992 return call2 (handler, Qverify_visited_file_modtime, buf);
|
|
|
3993
|
|
16
|
3994 if (stat ((char *) XSTRING_DATA (b->filename), &st) < 0)
|
|
0
|
3995 {
|
|
|
3996 /* If the file doesn't exist now and didn't exist before,
|
|
|
3997 we say that it isn't modified, provided the error is a tame one. */
|
|
|
3998 if (errno == ENOENT || errno == EACCES || errno == ENOTDIR)
|
|
|
3999 st.st_mtime = -1;
|
|
|
4000 else
|
|
|
4001 st.st_mtime = 0;
|
|
|
4002 }
|
|
|
4003 if (st.st_mtime == b->modtime
|
|
|
4004 /* If both are positive, accept them if they are off by one second. */
|
|
|
4005 || (st.st_mtime > 0 && b->modtime > 0
|
|
|
4006 && (st.st_mtime == b->modtime + 1
|
|
|
4007 || st.st_mtime == b->modtime - 1)))
|
|
|
4008 return Qt;
|
|
|
4009 return Qnil;
|
|
|
4010 }
|
|
|
4011
|
|
20
|
4012 DEFUN ("clear-visited-file-modtime", Fclear_visited_file_modtime, 0, 0, 0, /*
|
|
0
|
4013 Clear out records of last mod time of visited file.
|
|
|
4014 Next attempt to save will certainly not complain of a discrepancy.
|
|
20
|
4015 */
|
|
|
4016 ())
|
|
0
|
4017 {
|
|
|
4018 current_buffer->modtime = 0;
|
|
|
4019 return Qnil;
|
|
|
4020 }
|
|
|
4021
|
|
20
|
4022 DEFUN ("visited-file-modtime", Fvisited_file_modtime, 0, 0, 0, /*
|
|
0
|
4023 Return the current buffer's recorded visited file modification time.
|
|
|
4024 The value is a list of the form (HIGH . LOW), like the time values
|
|
|
4025 that `file-attributes' returns.
|
|
20
|
4026 */
|
|
|
4027 ())
|
|
0
|
4028 {
|
|
|
4029 return time_to_lisp ((time_t) current_buffer->modtime);
|
|
|
4030 }
|
|
|
4031
|
|
20
|
4032 DEFUN ("set-visited-file-modtime", Fset_visited_file_modtime, 0, 1, 0, /*
|
|
0
|
4033 Update buffer's recorded modification time from the visited file's time.
|
|
|
4034 Useful if the buffer was not read from the file normally
|
|
|
4035 or if the file itself has been changed for some known benign reason.
|
|
|
4036 An argument specifies the modification time value to use
|
|
|
4037 (instead of that of the visited file), in the form of a list
|
|
|
4038 (HIGH . LOW) or (HIGH LOW).
|
|
20
|
4039 */
|
|
|
4040 (time_list))
|
|
0
|
4041 {
|
|
44
|
4042 /* This function can call lisp */
|
|
0
|
4043 if (!NILP (time_list))
|
|
|
4044 {
|
|
|
4045 time_t the_time;
|
|
|
4046 lisp_to_time (time_list, &the_time);
|
|
|
4047 current_buffer->modtime = (int) the_time;
|
|
|
4048 }
|
|
|
4049 else
|
|
|
4050 {
|
|
|
4051 Lisp_Object filename;
|
|
|
4052 struct stat st;
|
|
|
4053 Lisp_Object handler;
|
|
40
|
4054 struct gcpro gcpro1, gcpro2, gcpro3;
|
|
0
|
4055
|
|
40
|
4056 GCPRO3 (filename, time_list, current_buffer->filename);
|
|
|
4057 filename = Fexpand_file_name (current_buffer->filename, Qnil);
|
|
0
|
4058
|
|
|
4059 /* If the file name has special constructs in it,
|
|
|
4060 call the corresponding file handler. */
|
|
|
4061 handler = Ffind_file_name_handler (filename, Qset_visited_file_modtime);
|
|
|
4062 UNGCPRO;
|
|
|
4063 if (!NILP (handler))
|
|
|
4064 /* The handler can find the file name the same way we did. */
|
|
|
4065 return call2 (handler, Qset_visited_file_modtime, Qnil);
|
|
16
|
4066 else if (stat ((char *) XSTRING_DATA (filename), &st) >= 0)
|
|
0
|
4067 current_buffer->modtime = st.st_mtime;
|
|
|
4068 }
|
|
|
4069
|
|
|
4070 return Qnil;
|
|
|
4071 }
|
|
|
4072
|
|
20
|
4073 DEFUN ("set-buffer-modtime", Fset_buffer_modtime, 1, 2, 0, /*
|
|
0
|
4074 Update BUFFER's recorded modification time from the associated
|
|
|
4075 file's modtime, if there is an associated file. If not, use the
|
|
|
4076 current time. In either case, if the optional arg TIME is supplied,
|
|
|
4077 it will be used if it is either an integer or a cons of two integers.
|
|
20
|
4078 */
|
|
|
4079 (buf, in_time))
|
|
0
|
4080 {
|
|
44
|
4081 /* This function can call lisp */
|
|
0
|
4082 unsigned long time_to_use = 0;
|
|
|
4083 int set_time_to_use = 0;
|
|
|
4084 struct stat st;
|
|
|
4085
|
|
|
4086 CHECK_BUFFER (buf);
|
|
|
4087
|
|
|
4088 if (!NILP (in_time))
|
|
|
4089 {
|
|
|
4090 if (INTP (in_time))
|
|
|
4091 {
|
|
|
4092 time_to_use = XINT (in_time);
|
|
|
4093 set_time_to_use = 1;
|
|
|
4094 }
|
|
|
4095 else if ((CONSP (in_time)) &&
|
|
|
4096 (INTP (Fcar (in_time))) &&
|
|
|
4097 (INTP (Fcdr (in_time))))
|
|
|
4098 {
|
|
|
4099 time_t the_time;
|
|
|
4100 lisp_to_time (in_time, &the_time);
|
|
|
4101 time_to_use = (unsigned long) the_time;
|
|
|
4102 set_time_to_use = 1;
|
|
|
4103 }
|
|
|
4104 }
|
|
|
4105
|
|
|
4106 if (!set_time_to_use)
|
|
|
4107 {
|
|
|
4108 Lisp_Object filename = Qnil;
|
|
40
|
4109 struct gcpro gcpro1;
|
|
|
4110 GCPRO1 (filename);
|
|
|
4111 /* #### dmoore - do we need to protect XBUFFER (buf)->filename?
|
|
|
4112 What if a ^(*&^&*^*& handler renames a buffer? I think I'm
|
|
|
4113 getting a headache now. */
|
|
0
|
4114
|
|
|
4115 if (STRINGP (XBUFFER (buf)->filename))
|
|
40
|
4116 filename = Fexpand_file_name (XBUFFER (buf)->filename, Qnil);
|
|
0
|
4117 else
|
|
|
4118 filename = Qnil;
|
|
|
4119
|
|
|
4120 if (!NILP (filename) && !NILP (Ffile_exists_p (filename)))
|
|
|
4121 {
|
|
|
4122 Lisp_Object handler;
|
|
|
4123
|
|
|
4124 /* If the file name has special constructs in it,
|
|
|
4125 call the corresponding file handler. */
|
|
|
4126 handler = Ffind_file_name_handler (filename, Qset_buffer_modtime);
|
|
|
4127 UNGCPRO;
|
|
|
4128 if (!NILP (handler))
|
|
|
4129 /* The handler can find the file name the same way we did. */
|
|
|
4130 return (call2 (handler, Qset_buffer_modtime, Qnil));
|
|
|
4131 else
|
|
|
4132 {
|
|
16
|
4133 if (stat ((char *) XSTRING_DATA (filename), &st) >= 0)
|
|
0
|
4134 time_to_use = st.st_mtime;
|
|
|
4135 else
|
|
|
4136 time_to_use = time ((time_t *) 0);
|
|
|
4137 }
|
|
|
4138 }
|
|
|
4139 else
|
|
40
|
4140 {
|
|
|
4141 UNGCPRO;
|
|
|
4142 time_to_use = time ((time_t *) 0);
|
|
|
4143 }
|
|
0
|
4144 }
|
|
|
4145
|
|
|
4146 XBUFFER (buf)->modtime = time_to_use;
|
|
40
|
4147
|
|
0
|
4148 return Qnil;
|
|
|
4149 }
|
|
|
4150
|
|
|
4151
|
|
|
4152 static Lisp_Object
|
|
|
4153 auto_save_error (Lisp_Object condition_object, Lisp_Object ignored)
|
|
|
4154 {
|
|
44
|
4155 /* This function can call lisp */
|
|
0
|
4156 if (gc_in_progress)
|
|
|
4157 return Qnil;
|
|
32
|
4158 /* Don't try printing an error message after everything is gone! */
|
|
|
4159 if (preparing_for_armageddon)
|
|
|
4160 return Qnil;
|
|
0
|
4161 clear_echo_area (selected_frame (), Qauto_saving, 1);
|
|
|
4162 Fding (Qt, Qauto_save_error, Qnil);
|
|
16
|
4163 message ("Auto-saving...error for %s", XSTRING_DATA (current_buffer->name));
|
|
0
|
4164 Fsleep_for (make_int (1));
|
|
16
|
4165 message ("Auto-saving...error!for %s", XSTRING_DATA (current_buffer->name));
|
|
0
|
4166 Fsleep_for (make_int (1));
|
|
16
|
4167 message ("Auto-saving...error for %s", XSTRING_DATA (current_buffer->name));
|
|
0
|
4168 Fsleep_for (make_int (1));
|
|
|
4169 return Qnil;
|
|
|
4170 }
|
|
|
4171
|
|
|
4172 static Lisp_Object
|
|
|
4173 auto_save_1 (Lisp_Object ignored)
|
|
|
4174 {
|
|
44
|
4175 /* This function can call lisp */
|
|
|
4176 /* #### I think caller is protecting current_buffer? */
|
|
0
|
4177 struct stat st;
|
|
|
4178 Lisp_Object fn = current_buffer->filename;
|
|
|
4179 Lisp_Object a = current_buffer->auto_save_file_name;
|
|
|
4180
|
|
|
4181 if (!STRINGP (a))
|
|
|
4182 return (Qnil);
|
|
|
4183
|
|
|
4184 /* Get visited file's mode to become the auto save file's mode. */
|
|
|
4185 if (STRINGP (fn) &&
|
|
16
|
4186 stat ((char *) XSTRING_DATA (fn), &st) >= 0)
|
|
0
|
4187 /* But make sure we can overwrite it later! */
|
|
|
4188 auto_save_mode_bits = st.st_mode | 0600;
|
|
|
4189 else
|
|
|
4190 /* default mode for auto-save files of buffers with no file is
|
|
|
4191 readable by owner only. This may annoy some small number of
|
|
|
4192 people, but the alternative removes all privacy from email. */
|
|
|
4193 auto_save_mode_bits = 0600;
|
|
|
4194
|
|
|
4195 return
|
|
|
4196 Fwrite_region_internal (Qnil, Qnil, a, Qnil, Qlambda, Qnil);
|
|
|
4197 }
|
|
|
4198
|
|
44
|
4199 static Lisp_Object
|
|
|
4200 auto_save_expand_name_error (Lisp_Object condition_object, Lisp_Object ignored)
|
|
|
4201 {
|
|
|
4202 /* #### this function should spew an error message about not being
|
|
|
4203 able to open the .saves file. */
|
|
|
4204 return Qnil;
|
|
|
4205 }
|
|
|
4206
|
|
|
4207 static Lisp_Object
|
|
|
4208 auto_save_expand_name (Lisp_Object name)
|
|
|
4209 {
|
|
|
4210 struct gcpro gcpro1;
|
|
|
4211
|
|
|
4212 /* note that caller did NOT gc protect name, so we do it. */
|
|
|
4213 /* #### dmoore - this might not be neccessary, if condition_case_1
|
|
|
4214 protects it. but I don't think it does. */
|
|
|
4215 GCPRO1 (name);
|
|
|
4216 RETURN_UNGCPRO (Fexpand_file_name (name, Qnil));
|
|
|
4217 }
|
|
|
4218
|
|
0
|
4219
|
|
|
4220 static Lisp_Object
|
|
|
4221 do_auto_save_unwind (Lisp_Object fd)
|
|
|
4222 {
|
|
|
4223 close (XINT (fd));
|
|
|
4224 return (fd);
|
|
|
4225 }
|
|
|
4226
|
|
|
4227 static Lisp_Object
|
|
|
4228 do_auto_save_unwind_2 (Lisp_Object old_auto_saving)
|
|
|
4229 {
|
|
|
4230 auto_saving = XINT (old_auto_saving);
|
|
|
4231 return Qnil;
|
|
|
4232 }
|
|
|
4233
|
|
|
4234 /* Fdo_auto_save() checks whether a GC is in progress when it is called,
|
|
|
4235 and if so, tries to avoid touching lisp objects.
|
|
|
4236
|
|
|
4237 The only time that Fdo_auto_save() is called while GC is in progress
|
|
|
4238 is if we're going down, as a result of an abort() or a kill signal.
|
|
|
4239 It's fairly important that we generate autosave files in that case!
|
|
|
4240 */
|
|
|
4241
|
|
20
|
4242 DEFUN ("do-auto-save", Fdo_auto_save, 0, 2, "", /*
|
|
0
|
4243 Auto-save all buffers that need it.
|
|
|
4244 This is all buffers that have auto-saving enabled
|
|
|
4245 and are changed since last auto-saved.
|
|
|
4246 Auto-saving writes the buffer into a file
|
|
|
4247 so that your editing is not lost if the system crashes.
|
|
|
4248 This file is not the file you visited; that changes only when you save.
|
|
|
4249 Normally we run the normal hook `auto-save-hook' before saving.
|
|
|
4250
|
|
|
4251 Non-nil first argument means do not print any message if successful.
|
|
|
4252 Non-nil second argument means save only current buffer.
|
|
20
|
4253 */
|
|
|
4254 (no_message, current_only))
|
|
0
|
4255 {
|
|
44
|
4256 /* This function can call lisp */
|
|
32
|
4257 struct buffer *b;
|
|
0
|
4258 Lisp_Object tail, buf;
|
|
|
4259 int auto_saved = 0;
|
|
|
4260 int do_handled_files;
|
|
|
4261 Lisp_Object oquit = Qnil;
|
|
|
4262 Lisp_Object listfile = Qnil;
|
|
32
|
4263 Lisp_Object old;
|
|
0
|
4264 int listdesc = -1;
|
|
|
4265 int speccount = specpdl_depth ();
|
|
32
|
4266 struct gcpro gcpro1, gcpro2, gcpro3;
|
|
|
4267
|
|
|
4268 XSETBUFFER (old, current_buffer);
|
|
|
4269 GCPRO3 (oquit, listfile, old);
|
|
0
|
4270 check_quit (); /* make Vquit_flag accurate */
|
|
|
4271 /* Ordinarily don't quit within this function,
|
|
|
4272 but don't make it impossible to quit (in case we get hung in I/O). */
|
|
|
4273 oquit = Vquit_flag;
|
|
|
4274 Vquit_flag = Qnil;
|
|
|
4275
|
|
|
4276 /* No further GCPRO needed, because (when it matters) all Lisp_Object
|
|
|
4277 variables point to non-strings reached from Vbuffer_alist. */
|
|
|
4278
|
|
|
4279 if (minibuf_level != 0 || preparing_for_armageddon)
|
|
|
4280 no_message = Qt;
|
|
|
4281
|
|
|
4282 run_hook (Qauto_save_hook);
|
|
|
4283
|
|
|
4284 if (GC_STRINGP (Vauto_save_list_file_name))
|
|
44
|
4285 listfile = condition_case_1 (Qt,
|
|
|
4286 auto_save_expand_name,
|
|
|
4287 Vauto_save_list_file_name,
|
|
|
4288 auto_save_expand_name_error, Qnil);
|
|
0
|
4289
|
|
|
4290 /* Make sure auto_saving is reset. */
|
|
|
4291 record_unwind_protect (do_auto_save_unwind_2, make_int (auto_saving));
|
|
|
4292
|
|
|
4293 auto_saving = 1;
|
|
|
4294
|
|
|
4295 /* First, save all files which don't have handlers. If Emacs is
|
|
|
4296 crashing, the handlers may tweak what is causing Emacs to crash
|
|
|
4297 in the first place, and it would be a shame if Emacs failed to
|
|
|
4298 autosave perfectly ordinary files because it couldn't handle some
|
|
|
4299 ange-ftp'd file. */
|
|
|
4300 for (do_handled_files = 0; do_handled_files < 2; do_handled_files++)
|
|
|
4301 {
|
|
|
4302 for (tail = Vbuffer_alist;
|
|
|
4303 GC_CONSP (tail);
|
|
|
4304 tail = XCDR (tail))
|
|
|
4305 {
|
|
|
4306 buf = XCDR (XCAR (tail));
|
|
|
4307 b = XBUFFER (buf);
|
|
|
4308
|
|
|
4309 if (!GC_NILP (current_only)
|
|
|
4310 && b != current_buffer)
|
|
|
4311 continue;
|
|
|
4312
|
|
|
4313 /* Don't auto-save indirect buffers.
|
|
|
4314 The base buffer takes care of it. */
|
|
|
4315 if (b->base_buffer)
|
|
|
4316 continue;
|
|
|
4317
|
|
|
4318 /* Check for auto save enabled
|
|
|
4319 and file changed since last auto save
|
|
|
4320 and file changed since last real save. */
|
|
|
4321 if (GC_STRINGP (b->auto_save_file_name)
|
|
|
4322 && BUF_SAVE_MODIFF (b) < BUF_MODIFF (b)
|
|
|
4323 && b->auto_save_modified < BUF_MODIFF (b)
|
|
|
4324 /* -1 means we've turned off autosaving for a while--see below. */
|
|
|
4325 && XINT (b->save_length) >= 0
|
|
|
4326 && (do_handled_files
|
|
|
4327 || NILP (Ffind_file_name_handler (b->auto_save_file_name,
|
|
|
4328 Qwrite_region))))
|
|
|
4329 {
|
|
|
4330 EMACS_TIME before_time, after_time;
|
|
|
4331
|
|
|
4332 EMACS_GET_TIME (before_time);
|
|
|
4333 /* If we had a failure, don't try again for 20 minutes. */
|
|
|
4334 if (!preparing_for_armageddon
|
|
|
4335 && b->auto_save_failure_time >= 0
|
|
|
4336 && (EMACS_SECS (before_time) - b->auto_save_failure_time <
|
|
|
4337 1200))
|
|
|
4338 continue;
|
|
|
4339
|
|
|
4340 if (!preparing_for_armageddon &&
|
|
|
4341 (XINT (b->save_length) * 10
|
|
|
4342 > (BUF_Z (b) - BUF_BEG (b)) * 13)
|
|
|
4343 /* A short file is likely to change a large fraction;
|
|
|
4344 spare the user annoying messages. */
|
|
|
4345 && XINT (b->save_length) > 5000
|
|
|
4346 /* These messages are frequent and annoying for `*mail*'. */
|
|
|
4347 && !EQ (b->filename, Qnil)
|
|
|
4348 && NILP (no_message)
|
|
|
4349 && disable_auto_save_when_buffer_shrinks)
|
|
|
4350 {
|
|
|
4351 /* It has shrunk too much; turn off auto-saving here.
|
|
|
4352 Unless we're about to crash, in which case auto-save it
|
|
|
4353 anyway.
|
|
|
4354 */
|
|
|
4355 message
|
|
|
4356 ("Buffer %s has shrunk a lot; auto save turned off there",
|
|
16
|
4357 XSTRING_DATA (b->name));
|
|
0
|
4358 /* Turn off auto-saving until there's a real save,
|
|
|
4359 and prevent any more warnings. */
|
|
|
4360 b->save_length = make_int (-1);
|
|
|
4361 if (!gc_in_progress)
|
|
|
4362 Fsleep_for (make_int (1));
|
|
|
4363 continue;
|
|
|
4364 }
|
|
|
4365 set_buffer_internal (b);
|
|
|
4366 if (!auto_saved && GC_NILP (no_message))
|
|
|
4367 {
|
|
|
4368 static CONST unsigned char *msg
|
|
|
4369 = (CONST unsigned char *) "Auto-saving...";
|
|
|
4370 echo_area_message (selected_frame (), msg, Qnil,
|
|
|
4371 0, strlen ((CONST char *) msg),
|
|
|
4372 Qauto_saving);
|
|
|
4373 }
|
|
|
4374
|
|
|
4375 /* Open the auto-save list file, if necessary.
|
|
|
4376 We only do this now so that the file only exists
|
|
|
4377 if we actually auto-saved any files. */
|
|
|
4378 if (!auto_saved && GC_STRINGP (listfile) && listdesc < 0)
|
|
|
4379 {
|
|
|
4380 #ifdef DOS_NT
|
|
16
|
4381 listdesc = open ((char *) XSTRING_DATA (listfile),
|
|
0
|
4382 O_WRONLY | O_TRUNC | O_CREAT | O_TEXT,
|
|
|
4383 S_IREAD | S_IWRITE);
|
|
|
4384 #else /* not DOS_NT */
|
|
16
|
4385 listdesc = creat ((char *) XSTRING_DATA (listfile), 0666);
|
|
0
|
4386 #endif /* not DOS_NT */
|
|
|
4387
|
|
|
4388 /* Arrange to close that file whether or not we get
|
|
|
4389 an error. */
|
|
|
4390 if (listdesc >= 0)
|
|
|
4391 record_unwind_protect (do_auto_save_unwind,
|
|
|
4392 make_int (listdesc));
|
|
|
4393 }
|
|
|
4394
|
|
|
4395 /* Record all the buffers that we are auto-saving in
|
|
|
4396 the special file that lists them. For each of
|
|
|
4397 these buffers, record visited name (if any) and
|
|
|
4398 auto save name. */
|
|
|
4399 if (listdesc >= 0)
|
|
|
4400 {
|
|
|
4401 Extbyte *auto_save_file_name_ext;
|
|
|
4402 Extcount auto_save_file_name_ext_len;
|
|
|
4403
|
|
|
4404 GET_STRING_FILENAME_DATA_ALLOCA
|
|
|
4405 (b->auto_save_file_name,
|
|
|
4406 auto_save_file_name_ext,
|
|
|
4407 auto_save_file_name_ext_len);
|
|
|
4408 if (!NILP (b->filename))
|
|
|
4409 {
|
|
|
4410 Extbyte *filename_ext;
|
|
|
4411 Extcount filename_ext_len;
|
|
|
4412
|
|
|
4413 GET_STRING_FILENAME_DATA_ALLOCA (b->filename,
|
|
|
4414 filename_ext,
|
|
|
4415 filename_ext_len);
|
|
|
4416 write (listdesc, filename_ext, filename_ext_len);
|
|
|
4417 }
|
|
|
4418 write (listdesc, "\n", 1);
|
|
|
4419 write (listdesc, auto_save_file_name_ext,
|
|
|
4420 auto_save_file_name_ext_len);
|
|
|
4421 write (listdesc, "\n", 1);
|
|
|
4422 }
|
|
|
4423
|
|
32
|
4424 /* dmoore - In a bad scenario we've set b=XBUFFER(buf)
|
|
|
4425 based on values in Vbuffer_alist. auto_save_1 may
|
|
|
4426 cause lisp handlers to run. Those handlers may kill
|
|
|
4427 the buffer and then GC. Since the buffer is killed,
|
|
|
4428 it's no longer in Vbuffer_alist so it might get reaped
|
|
|
4429 by the GC. We also need to protect tail. */
|
|
|
4430 /* #### There is probably a lot of other code which has
|
|
|
4431 pointers into buffers which may get blown away by
|
|
|
4432 handlers. */
|
|
|
4433 {
|
|
|
4434 struct gcpro gcpro1, gcpro2;
|
|
|
4435 GCPRO2 (buf, tail);
|
|
|
4436 condition_case_1 (Qt,
|
|
|
4437 auto_save_1, Qnil,
|
|
|
4438 auto_save_error, Qnil);
|
|
|
4439 UNGCPRO;
|
|
|
4440 }
|
|
|
4441 /* Handler killed our saved current-buffer! Pick any. */
|
|
|
4442 if (!BUFFER_LIVE_P (XBUFFER (old)))
|
|
|
4443 XSETBUFFER (old, current_buffer);
|
|
|
4444
|
|
|
4445 set_buffer_internal (XBUFFER (old));
|
|
0
|
4446 auto_saved++;
|
|
32
|
4447
|
|
|
4448 /* Handler killed their own buffer! */
|
|
|
4449 if (!BUFFER_LIVE_P(b))
|
|
|
4450 continue;
|
|
|
4451
|
|
0
|
4452 b->auto_save_modified = BUF_MODIFF (b);
|
|
|
4453 b->save_length = make_int (BUF_SIZE (b));
|
|
|
4454 EMACS_GET_TIME (after_time);
|
|
|
4455 /* If auto-save took more than 60 seconds,
|
|
|
4456 assume it was an NFS failure that got a timeout. */
|
|
|
4457 if (EMACS_SECS (after_time) - EMACS_SECS (before_time) > 60)
|
|
|
4458 b->auto_save_failure_time = EMACS_SECS (after_time);
|
|
|
4459 }
|
|
|
4460 }
|
|
|
4461 }
|
|
|
4462
|
|
|
4463 /* Prevent another auto save till enough input events come in. */
|
|
|
4464 if (auto_saved)
|
|
|
4465 record_auto_save ();
|
|
|
4466
|
|
|
4467 /* If we didn't save anything into the listfile, remove the old
|
|
|
4468 one because nothing needed to be auto-saved. Do this afterwards
|
|
|
4469 rather than before in case we get a crash attempting to autosave
|
|
|
4470 (in that case we'd still want the old one around). */
|
|
|
4471 if (listdesc < 0 && !auto_saved && GC_STRINGP (listfile))
|
|
16
|
4472 unlink ((char *) XSTRING_DATA (listfile));
|
|
0
|
4473
|
|
|
4474 /* Show "...done" only if the echo area would otherwise be empty. */
|
|
|
4475 if (auto_saved && NILP (no_message)
|
|
|
4476 && NILP (clear_echo_area (selected_frame (), Qauto_saving, 0)))
|
|
|
4477 {
|
|
|
4478 static CONST unsigned char *msg
|
|
|
4479 = (CONST unsigned char *)"Auto-saving...done";
|
|
|
4480 echo_area_message (selected_frame (), msg, Qnil, 0,
|
|
|
4481 strlen ((CONST char *) msg), Qauto_saving);
|
|
|
4482 }
|
|
|
4483
|
|
|
4484 Vquit_flag = oquit;
|
|
|
4485
|
|
|
4486 RETURN_UNGCPRO (unbind_to (speccount, Qnil));
|
|
|
4487 }
|
|
|
4488
|
|
20
|
4489 DEFUN ("set-buffer-auto-saved", Fset_buffer_auto_saved, 0, 0, 0, /*
|
|
0
|
4490 Mark current buffer as auto-saved with its current text.
|
|
|
4491 No auto-save file will be written until the buffer changes again.
|
|
20
|
4492 */
|
|
|
4493 ())
|
|
0
|
4494 {
|
|
|
4495 current_buffer->auto_save_modified = BUF_MODIFF (current_buffer);
|
|
|
4496 current_buffer->save_length = make_int (BUF_SIZE (current_buffer));
|
|
|
4497 current_buffer->auto_save_failure_time = -1;
|
|
|
4498 return Qnil;
|
|
|
4499 }
|
|
|
4500
|
|
20
|
4501 DEFUN ("clear-buffer-auto-save-failure", Fclear_buffer_auto_save_failure, 0, 0, 0, /*
|
|
0
|
4502 Clear any record of a recent auto-save failure in the current buffer.
|
|
20
|
4503 */
|
|
|
4504 ())
|
|
0
|
4505 {
|
|
|
4506 current_buffer->auto_save_failure_time = -1;
|
|
|
4507 return Qnil;
|
|
|
4508 }
|
|
|
4509
|
|
20
|
4510 DEFUN ("recent-auto-save-p", Frecent_auto_save_p, 0, 0, 0, /*
|
|
0
|
4511 Return t if buffer has been auto-saved since last read in or saved.
|
|
20
|
4512 */
|
|
|
4513 ())
|
|
0
|
4514 {
|
|
|
4515 return (BUF_SAVE_MODIFF (current_buffer) <
|
|
|
4516 current_buffer->auto_save_modified) ? Qt : Qnil;
|
|
|
4517 }
|
|
|
4518
|
|
|
4519
|
|
|
4520 /************************************************************************/
|
|
|
4521 /* initialization */
|
|
|
4522 /************************************************************************/
|
|
|
4523
|
|
|
4524 void
|
|
|
4525 syms_of_fileio (void)
|
|
|
4526 {
|
|
|
4527 defsymbol (&Qexpand_file_name, "expand-file-name");
|
|
|
4528 defsymbol (&Qfile_truename, "file-truename");
|
|
|
4529 defsymbol (&Qsubstitute_in_file_name, "substitute-in-file-name");
|
|
|
4530 defsymbol (&Qdirectory_file_name, "directory-file-name");
|
|
|
4531 defsymbol (&Qfile_name_directory, "file-name-directory");
|
|
|
4532 defsymbol (&Qfile_name_nondirectory, "file-name-nondirectory");
|
|
|
4533 defsymbol (&Qunhandled_file_name_directory, "unhandled-file-name-directory");
|
|
|
4534 defsymbol (&Qfile_name_as_directory, "file-name-as-directory");
|
|
|
4535 defsymbol (&Qcopy_file, "copy-file");
|
|
|
4536 defsymbol (&Qmake_directory_internal, "make-directory-internal");
|
|
|
4537 defsymbol (&Qdelete_directory, "delete-directory");
|
|
|
4538 defsymbol (&Qdelete_file, "delete-file");
|
|
|
4539 defsymbol (&Qrename_file, "rename-file");
|
|
|
4540 defsymbol (&Qadd_name_to_file, "add-name-to-file");
|
|
|
4541 defsymbol (&Qmake_symbolic_link, "make-symbolic-link");
|
|
|
4542 defsymbol (&Qfile_exists_p, "file-exists-p");
|
|
|
4543 defsymbol (&Qfile_executable_p, "file-executable-p");
|
|
|
4544 defsymbol (&Qfile_readable_p, "file-readable-p");
|
|
|
4545 defsymbol (&Qfile_symlink_p, "file-symlink-p");
|
|
|
4546 defsymbol (&Qfile_writable_p, "file-writable-p");
|
|
|
4547 defsymbol (&Qfile_directory_p, "file-directory-p");
|
|
|
4548 defsymbol (&Qfile_regular_p, "file-regular-p");
|
|
|
4549 defsymbol (&Qfile_accessible_directory_p, "file-accessible-directory-p");
|
|
|
4550 defsymbol (&Qfile_modes, "file-modes");
|
|
|
4551 defsymbol (&Qset_file_modes, "set-file-modes");
|
|
|
4552 defsymbol (&Qfile_newer_than_file_p, "file-newer-than-file-p");
|
|
|
4553 defsymbol (&Qinsert_file_contents, "insert-file-contents");
|
|
|
4554 defsymbol (&Qwrite_region, "write-region");
|
|
|
4555 defsymbol (&Qverify_visited_file_modtime, "verify-visited-file-modtime");
|
|
|
4556 defsymbol (&Qset_visited_file_modtime, "set-visited-file-modtime");
|
|
|
4557 defsymbol (&Qset_buffer_modtime, "set-buffer-modtime");
|
|
|
4558 #ifdef DOS_NT
|
|
|
4559 defsymbol (&Qfind_buffer_file_type, "find-buffer-file-type");
|
|
|
4560 #endif /* DOS_NT */
|
|
|
4561 defsymbol (&Qcar_less_than_car, "car-less-than-car"); /* Vomitous! */
|
|
|
4562
|
|
|
4563 defsymbol (&Qfile_name_handler_alist, "file-name-handler-alist");
|
|
|
4564 defsymbol (&Qauto_save_hook, "auto-save-hook");
|
|
|
4565 defsymbol (&Qauto_save_error, "auto-save-error");
|
|
|
4566 defsymbol (&Qauto_saving, "auto-saving");
|
|
|
4567
|
|
|
4568 defsymbol (&Qformat_decode, "format-decode");
|
|
|
4569 defsymbol (&Qformat_annotate_function, "format-annotate-function");
|
|
|
4570
|
|
|
4571 defsymbol (&Qcompute_buffer_file_truename, "compute-buffer-file-truename");
|
|
|
4572 deferror (&Qfile_error, "file-error", "File error", Qio_error);
|
|
|
4573 deferror (&Qfile_already_exists, "file-already-exists",
|
|
|
4574 "File already exists", Qfile_error);
|
|
|
4575
|
|
20
|
4576 DEFSUBR (Ffind_file_name_handler);
|
|
|
4577
|
|
|
4578 DEFSUBR (Ffile_name_directory);
|
|
|
4579 DEFSUBR (Ffile_name_nondirectory);
|
|
|
4580 DEFSUBR (Funhandled_file_name_directory);
|
|
|
4581 DEFSUBR (Ffile_name_as_directory);
|
|
|
4582 DEFSUBR (Fdirectory_file_name);
|
|
|
4583 DEFSUBR (Fmake_temp_name);
|
|
|
4584 DEFSUBR (Fexpand_file_name);
|
|
|
4585 DEFSUBR (Ffile_truename);
|
|
|
4586 DEFSUBR (Fsubstitute_in_file_name);
|
|
|
4587 DEFSUBR (Fcopy_file);
|
|
|
4588 DEFSUBR (Fmake_directory_internal);
|
|
|
4589 DEFSUBR (Fdelete_directory);
|
|
|
4590 DEFSUBR (Fdelete_file);
|
|
|
4591 DEFSUBR (Frename_file);
|
|
|
4592 DEFSUBR (Fadd_name_to_file);
|
|
0
|
4593 #ifdef S_IFLNK
|
|
20
|
4594 DEFSUBR (Fmake_symbolic_link);
|
|
0
|
4595 #endif /* S_IFLNK */
|
|
|
4596 #ifdef VMS
|
|
20
|
4597 DEFSUBR (Fdefine_logical_name);
|
|
0
|
4598 #endif /* VMS */
|
|
|
4599 #ifdef HPUX_NET
|
|
20
|
4600 DEFSUBR (Fsysnetunam);
|
|
0
|
4601 #endif /* HPUX_NET */
|
|
20
|
4602 DEFSUBR (Ffile_name_absolute_p);
|
|
|
4603 DEFSUBR (Ffile_exists_p);
|
|
|
4604 DEFSUBR (Ffile_executable_p);
|
|
|
4605 DEFSUBR (Ffile_readable_p);
|
|
|
4606 DEFSUBR (Ffile_writable_p);
|
|
|
4607 DEFSUBR (Ffile_symlink_p);
|
|
|
4608 DEFSUBR (Ffile_directory_p);
|
|
|
4609 DEFSUBR (Ffile_accessible_directory_p);
|
|
|
4610 DEFSUBR (Ffile_regular_p);
|
|
|
4611 DEFSUBR (Ffile_modes);
|
|
|
4612 DEFSUBR (Fset_file_modes);
|
|
|
4613 DEFSUBR (Fset_default_file_modes);
|
|
|
4614 DEFSUBR (Fdefault_file_modes);
|
|
|
4615 DEFSUBR (Funix_sync);
|
|
|
4616 DEFSUBR (Ffile_newer_than_file_p);
|
|
|
4617 DEFSUBR (Finsert_file_contents_internal);
|
|
|
4618 DEFSUBR (Fwrite_region_internal);
|
|
|
4619 DEFSUBR (Fcar_less_than_car); /* Vomitous! */
|
|
|
4620 DEFSUBR (Fcdr_less_than_cdr); /* Yeah oh yeah bucko .... */
|
|
0
|
4621 #if 0
|
|
20
|
4622 DEFSUBR (Fencrypt_string);
|
|
|
4623 DEFSUBR (Fdecrypt_string);
|
|
0
|
4624 #endif
|
|
20
|
4625 DEFSUBR (Fverify_visited_file_modtime);
|
|
|
4626 DEFSUBR (Fclear_visited_file_modtime);
|
|
|
4627 DEFSUBR (Fvisited_file_modtime);
|
|
|
4628 DEFSUBR (Fset_visited_file_modtime);
|
|
|
4629 DEFSUBR (Fset_buffer_modtime);
|
|
|
4630
|
|
|
4631 DEFSUBR (Fdo_auto_save);
|
|
|
4632 DEFSUBR (Fset_buffer_auto_saved);
|
|
|
4633 DEFSUBR (Fclear_buffer_auto_save_failure);
|
|
|
4634 DEFSUBR (Frecent_auto_save_p);
|
|
0
|
4635 }
|
|
|
4636
|
|
|
4637 void
|
|
|
4638 vars_of_fileio (void)
|
|
|
4639 {
|
|
|
4640 DEFVAR_LISP ("auto-save-file-format", &Vauto_save_file_format /*
|
|
|
4641 *Format in which to write auto-save files.
|
|
|
4642 Should be a list of symbols naming formats that are defined in `format-alist'.
|
|
|
4643 If it is t, which is the default, auto-save files are written in the
|
|
|
4644 same format as a regular save would use.
|
|
|
4645 */ );
|
|
|
4646 Vauto_save_file_format = Qt;
|
|
|
4647
|
|
|
4648 DEFVAR_BOOL ("vms-stmlf-recfm", &vms_stmlf_recfm /*
|
|
|
4649 *Non-nil means write new files with record format `stmlf'.
|
|
|
4650 nil means use format `var'. This variable is meaningful only on VMS.
|
|
|
4651 */ );
|
|
|
4652 vms_stmlf_recfm = 0;
|
|
|
4653
|
|
|
4654 DEFVAR_LISP ("file-name-handler-alist", &Vfile_name_handler_alist /*
|
|
|
4655 *Alist of elements (REGEXP . HANDLER) for file names handled specially.
|
|
|
4656 If a file name matches REGEXP, then all I/O on that file is done by calling
|
|
|
4657 HANDLER.
|
|
|
4658
|
|
|
4659 The first argument given to HANDLER is the name of the I/O primitive
|
|
|
4660 to be handled; the remaining arguments are the arguments that were
|
|
|
4661 passed to that primitive. For example, if you do
|
|
|
4662 (file-exists-p FILENAME)
|
|
|
4663 and FILENAME is handled by HANDLER, then HANDLER is called like this:
|
|
|
4664 (funcall HANDLER 'file-exists-p FILENAME)
|
|
|
4665 The function `find-file-name-handler' checks this list for a handler
|
|
|
4666 for its argument.
|
|
|
4667 */ );
|
|
|
4668 Vfile_name_handler_alist = Qnil;
|
|
|
4669
|
|
|
4670 DEFVAR_LISP ("after-insert-file-functions", &Vafter_insert_file_functions /*
|
|
|
4671 A list of functions to be called at the end of `insert-file-contents'.
|
|
|
4672 Each is passed one argument, the number of bytes inserted. It should return
|
|
|
4673 the new byte count, and leave point the same. If `insert-file-contents' is
|
|
|
4674 intercepted by a handler from `file-name-handler-alist', that handler is
|
|
|
4675 responsible for calling the after-insert-file-functions if appropriate.
|
|
|
4676 */ );
|
|
|
4677 Vafter_insert_file_functions = Qnil;
|
|
|
4678
|
|
|
4679 DEFVAR_LISP ("write-region-annotate-functions",
|
|
|
4680 &Vwrite_region_annotate_functions /*
|
|
|
4681 A list of functions to be called at the start of `write-region'.
|
|
|
4682 Each is passed two arguments, START and END as for `write-region'.
|
|
|
4683 It should return a list of pairs (POSITION . STRING) of strings to be
|
|
|
4684 effectively inserted at the specified positions of the file being written
|
|
|
4685 \(1 means to insert before the first byte written). The POSITIONs must be
|
|
|
4686 sorted into increasing order. If there are several functions in the list,
|
|
|
4687 the several lists are merged destructively.
|
|
|
4688 */ );
|
|
|
4689 Vwrite_region_annotate_functions = Qnil;
|
|
|
4690
|
|
|
4691 DEFVAR_LISP ("write-region-annotations-so-far",
|
|
|
4692 &Vwrite_region_annotations_so_far /*
|
|
|
4693 When an annotation function is called, this holds the previous annotations.
|
|
|
4694 These are the annotations made by other annotation functions
|
|
|
4695 that were already called. See also `write-region-annotate-functions'.
|
|
|
4696 */ );
|
|
|
4697 Vwrite_region_annotations_so_far = Qnil;
|
|
|
4698
|
|
|
4699 DEFVAR_LISP ("inhibit-file-name-handlers", &Vinhibit_file_name_handlers /*
|
|
|
4700 A list of file name handlers that temporarily should not be used.
|
|
|
4701 This applies only to the operation `inhibit-file-name-operation'.
|
|
|
4702 */ );
|
|
|
4703 Vinhibit_file_name_handlers = Qnil;
|
|
|
4704
|
|
|
4705 DEFVAR_LISP ("inhibit-file-name-operation", &Vinhibit_file_name_operation /*
|
|
|
4706 The operation for which `inhibit-file-name-handlers' is applicable.
|
|
|
4707 */ );
|
|
|
4708 Vinhibit_file_name_operation = Qnil;
|
|
|
4709
|
|
|
4710 DEFVAR_LISP ("auto-save-list-file-name", &Vauto_save_list_file_name /*
|
|
|
4711 File name in which we write a list of all auto save file names.
|
|
|
4712 */ );
|
|
|
4713 Vauto_save_list_file_name = Qnil;
|
|
|
4714
|
|
|
4715 DEFVAR_BOOL ("disable-auto-save-when-buffer-shrinks",
|
|
|
4716 &disable_auto_save_when_buffer_shrinks /*
|
|
|
4717 If non-nil, auto-saving is disabled when a buffer shrinks too much.
|
|
|
4718 This is to prevent you from losing your edits if you accidentally
|
|
|
4719 delete a large chunk of the buffer and don't notice it until too late.
|
|
|
4720 Saving the buffer normally turns auto-save back on.
|
|
|
4721 */ );
|
|
|
4722 disable_auto_save_when_buffer_shrinks = 1;
|
|
|
4723 }
|
