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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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36 #include "sysfile.h"
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37 #include "sysproc.h"
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38 #include "syspwd.h"
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39 #include "systime.h"
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40 #include "sysdir.h"
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41
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42 #ifdef HPUX
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43 #include <netio.h>
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44 #ifdef HPUX_PRE_8_0
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45 #include <errnet.h>
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46 #endif
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47 #endif
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48
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49 #ifdef HAVE_LIBGEN_H
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50 #include <libgen.h>
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51 #endif
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52
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53 /* Nonzero during writing of auto-save files */
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54 static int auto_saving;
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55
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56 /* Set by auto_save_1 to mode of original file so Fwrite_region_internal
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57 will create a new file with the same mode as the original */
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58 static int auto_save_mode_bits;
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59
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60 /* Alist of elements (REGEXP . HANDLER) for file names
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61 whose I/O is done with a special handler. */
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62 Lisp_Object Vfile_name_handler_alist;
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63
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64 /* Format for auto-save files */
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65 Lisp_Object Vauto_save_file_format;
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66
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67 /* Lisp functions for translating file formats */
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68 Lisp_Object Qformat_decode, Qformat_annotate_function;
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69
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70 /* Functions to be called to process text properties in inserted file. */
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71 Lisp_Object Vafter_insert_file_functions;
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72
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73 /* Functions to be called to create text property annotations for file. */
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74 Lisp_Object Vwrite_region_annotate_functions;
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75
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76 /* During build_annotations, each time an annotation function is called,
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77 this holds the annotations made by the previous functions. */
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78 Lisp_Object Vwrite_region_annotations_so_far;
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79
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80 /* File name in which we write a list of all our auto save files. */
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81 Lisp_Object Vauto_save_list_file_name;
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82
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83 /* On VMS, nonzero means write new files with record format stmlf.
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84 Zero means use var format. */
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85 int vms_stmlf_recfm;
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86
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87 int disable_auto_save_when_buffer_shrinks;
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88
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89 Lisp_Object Qfile_name_handler_alist;
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90
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91 /* These variables describe handlers that have "already" had a chance
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92 to handle the current operation.
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93
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94 Vinhibit_file_name_handlers is a list of file name handlers.
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95 Vinhibit_file_name_operation is the operation being handled.
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96 If we try to handle that operation, we ignore those handlers. */
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97
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98 static Lisp_Object Vinhibit_file_name_handlers;
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99 static Lisp_Object Vinhibit_file_name_operation;
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100
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101 Lisp_Object Qfile_error, Qfile_already_exists;
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102
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103 Lisp_Object Qauto_save_hook;
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104 Lisp_Object Qauto_save_error;
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105 Lisp_Object Qauto_saving;
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106
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107 Lisp_Object Qcar_less_than_car;
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108
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109 Lisp_Object Qcompute_buffer_file_truename;
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110
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111 /* signal a file error when errno contains a meaningful value. */
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112
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113 DOESNT_RETURN
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114 report_file_error (CONST char *string, Lisp_Object data)
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115 {
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116 /* mrb: #### Needs to be fixed at a lower level; errstring needs to
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117 be MULEized. The following at least prevents a crash... */
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118 Lisp_Object errstring = build_ext_string (strerror (errno), FORMAT_BINARY);
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119
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120 /* System error messages are capitalized. Downcase the initial
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121 unless it is followed by a slash. */
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122 if (string_char (XSTRING (errstring), 1) != '/')
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123 set_string_char (XSTRING (errstring), 0,
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124 DOWNCASE (current_buffer,
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125 string_char (XSTRING (errstring), 0)));
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126
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127 signal_error (Qfile_error,
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128 Fcons (build_translated_string (string),
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129 Fcons (errstring, data)));
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130 }
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131
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132 void
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133 maybe_report_file_error (CONST char *string, Lisp_Object data,
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134 Lisp_Object class, Error_behavior errb)
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135 {
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136 Lisp_Object errstring;
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137
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138 /* Optimization: */
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139 if (ERRB_EQ (errb, ERROR_ME_NOT))
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140 return;
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141
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142 errstring = build_string (strerror (errno));
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143
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144 /* System error messages are capitalized. Downcase the initial
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145 unless it is followed by a slash. */
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146 if (string_char (XSTRING (errstring), 1) != '/')
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147 set_string_char (XSTRING (errstring), 0,
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148 DOWNCASE (current_buffer,
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149 string_char (XSTRING (errstring), 0)));
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150
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151 maybe_signal_error (Qfile_error,
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152 Fcons (build_translated_string (string),
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153 Fcons (errstring, data)),
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154 class, errb);
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155 }
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156
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157 /* signal a file error when errno does not contain a meaningful value. */
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158
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159 DOESNT_RETURN
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160 signal_file_error (CONST char *string, Lisp_Object data)
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161 {
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162 signal_error (Qfile_error,
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163 list2 (build_translated_string (string), data));
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164 }
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165
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166 void
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167 maybe_signal_file_error (CONST char *string, Lisp_Object data,
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168 Lisp_Object class, Error_behavior errb)
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169 {
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170 /* Optimization: */
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171 if (ERRB_EQ (errb, ERROR_ME_NOT))
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172 return;
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173 maybe_signal_error (Qfile_error,
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174 list2 (build_translated_string (string), data),
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175 class, errb);
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176 }
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177
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178 DOESNT_RETURN
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179 signal_double_file_error (CONST char *string1, CONST char *string2,
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180 Lisp_Object data)
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181 {
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182 signal_error (Qfile_error,
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183 list3 (build_translated_string (string1),
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184 build_translated_string (string2),
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185 data));
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186 }
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187
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188 void
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189 maybe_signal_double_file_error (CONST char *string1, CONST char *string2,
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190 Lisp_Object data, Lisp_Object class,
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191 Error_behavior errb)
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192 {
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193 /* Optimization: */
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194 if (ERRB_EQ (errb, ERROR_ME_NOT))
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195 return;
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196 maybe_signal_error (Qfile_error,
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197 list3 (build_translated_string (string1),
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198 build_translated_string (string2),
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199 data),
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200 class, errb);
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201 }
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202
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203 DOESNT_RETURN
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204 signal_double_file_error_2 (CONST char *string1, CONST char *string2,
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205 Lisp_Object data1, Lisp_Object data2)
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206 {
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207 signal_error (Qfile_error,
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208 list4 (build_translated_string (string1),
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209 build_translated_string (string2),
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210 data1, data2));
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211 }
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212
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213 void
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214 maybe_signal_double_file_error_2 (CONST char *string1, CONST char *string2,
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215 Lisp_Object data1, Lisp_Object data2,
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216 Lisp_Object class, Error_behavior errb)
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217 {
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218 /* Optimization: */
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219 if (ERRB_EQ (errb, ERROR_ME_NOT))
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220 return;
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221 maybe_signal_error (Qfile_error,
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222 list4 (build_translated_string (string1),
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223 build_translated_string (string2),
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224 data1, data2),
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225 class, errb);
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226 }
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227
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228 static Lisp_Object
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229 close_file_unwind (Lisp_Object fd)
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230 {
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231 if (CONSP (fd))
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232 {
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233 if (INTP (XCAR (fd)))
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234 close (XINT (XCAR (fd)));
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235
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236 free_cons (XCONS (fd));
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237 }
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238 else
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239 close (XINT (fd));
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240
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241 return Qnil;
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242 }
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243
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244 static Lisp_Object
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245 close_stream_unwind (Lisp_Object stream)
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246 {
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247 Lstream_close (XLSTREAM (stream));
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248 return Qnil;
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249 }
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250
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251 /* Restore point, having saved it as a marker. */
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252
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253 static Lisp_Object
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254 restore_point_unwind (Lisp_Object point_marker)
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255 {
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256 BUF_SET_PT (current_buffer, marker_position (point_marker));
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257 return (Fset_marker (point_marker, Qnil, Qnil));
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258 }
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259
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260 /* Versions of read() and write() that allow quitting out of the actual
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261 I/O. We don't use immediate_quit (i.e. direct longjmp() out of the
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262 signal handler) because that's way too losing.
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263
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264 (#### Actually, longjmp()ing out of the signal handler may not be
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265 as losing as I thought. See sys_do_signal() in sysdep.c.)
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266
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267 Solaris include files declare the return value as ssize_t.
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268 Is that standard? */
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269 int
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270 read_allowing_quit (int fildes, void *buf, unsigned int nbyte)
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271 {
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272 int nread;
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273 QUIT;
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274
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275 nread = sys_read_1 (fildes, buf, nbyte, 1);
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276 return nread;
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277 }
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278
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279 int
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280 write_allowing_quit (int fildes, CONST void *buf, unsigned int nbyte)
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281 {
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282 int nread;
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283
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284 QUIT;
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285 nread = sys_write_1 (fildes, buf, nbyte, 1);
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286 return nread;
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287 }
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288
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289
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290 Lisp_Object Qexpand_file_name;
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291 Lisp_Object Qfile_truename;
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292 Lisp_Object Qsubstitute_in_file_name;
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293 Lisp_Object Qdirectory_file_name;
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294 Lisp_Object Qfile_name_directory;
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295 Lisp_Object Qfile_name_nondirectory;
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296 Lisp_Object Qunhandled_file_name_directory;
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297 Lisp_Object Qfile_name_as_directory;
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298 Lisp_Object Qcopy_file;
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299 Lisp_Object Qmake_directory_internal;
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300 Lisp_Object Qdelete_directory;
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301 Lisp_Object Qdelete_file;
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302 Lisp_Object Qrename_file;
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303 Lisp_Object Qadd_name_to_file;
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304 Lisp_Object Qmake_symbolic_link;
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305 Lisp_Object Qfile_exists_p;
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306 Lisp_Object Qfile_executable_p;
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307 Lisp_Object Qfile_readable_p;
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308 Lisp_Object Qfile_symlink_p;
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309 Lisp_Object Qfile_writable_p;
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310 Lisp_Object Qfile_directory_p;
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311 Lisp_Object Qfile_regular_p;
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312 Lisp_Object Qfile_accessible_directory_p;
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313 Lisp_Object Qfile_modes;
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314 Lisp_Object Qset_file_modes;
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315 Lisp_Object Qfile_newer_than_file_p;
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316 Lisp_Object Qinsert_file_contents;
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317 Lisp_Object Qwrite_region;
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318 Lisp_Object Qverify_visited_file_modtime;
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319 Lisp_Object Qset_visited_file_modtime;
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320 Lisp_Object Qset_buffer_modtime;
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321
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322 /* If FILENAME is handled specially on account of its syntax,
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323 return its handler function. Otherwise, return nil. */
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324
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325 DEFUN ("find-file-name-handler",
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326 Ffind_file_name_handler, Sfind_file_name_handler, 1, 2, 0 /*
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327 Return FILENAME's handler function for OPERATION, if it has one.
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328 Otherwise, return nil.
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329 A file name is handled if one of the regular expressions in
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330 `file-name-handler-alist' matches it.
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331
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332 If OPERATION equals `inhibit-file-name-operation', then we ignore
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333 any handlers that are members of `inhibit-file-name-handlers',
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334 but we still do run any other handlers. This lets handlers
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335 use the standard functions without calling themselves recursively.
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336 */ )
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337 (filename, operation)
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338 Lisp_Object filename, operation;
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339 {
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340 /* This function must not munge the match data. */
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341 Lisp_Object chain, inhibited_handlers;
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342
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343 CHECK_STRING (filename);
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344
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345 if (EQ (operation, Vinhibit_file_name_operation))
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346 inhibited_handlers = Vinhibit_file_name_handlers;
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347 else
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348 inhibited_handlers = Qnil;
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349
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350 for (chain = Vfile_name_handler_alist; CONSP (chain);
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351 chain = XCDR (chain))
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352 {
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353 Lisp_Object elt = XCAR (chain);
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354 if (CONSP (elt))
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355 {
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356 Lisp_Object string;
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357 string = XCAR (elt);
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358 if (STRINGP (string)
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359 && (fast_lisp_string_match (string, filename) >= 0))
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360 {
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361 Lisp_Object handler = XCDR (elt);
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362 if (NILP (Fmemq (handler, inhibited_handlers)))
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363 return (handler);
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364 }
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365 }
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366 QUIT;
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367 }
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368 return Qnil;
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369 }
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370
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371 static Lisp_Object
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372 call2_check_string (Lisp_Object fn, Lisp_Object arg0, Lisp_Object arg1)
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373 {
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374 /* This function can GC */
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375 Lisp_Object result = call2 (fn, arg0, arg1);
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376 CHECK_STRING (result);
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377 return (result);
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378 }
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379
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380 static Lisp_Object
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381 call3_check_string (Lisp_Object fn, Lisp_Object arg0,
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382 Lisp_Object arg1, Lisp_Object arg2)
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383 {
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384 /* This function can GC */
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385 Lisp_Object result = call3 (fn, arg0, arg1, arg2);
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386 CHECK_STRING (result);
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387 return (result);
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388 }
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389
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390
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391 DEFUN ("file-name-directory", Ffile_name_directory, Sfile_name_directory,
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392 1, 1, 0 /*
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393 Return the directory component in file name NAME.
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394 Return nil if NAME does not include a directory.
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395 Otherwise return a directory spec.
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396 Given a Unix syntax file name, returns a string ending in slash;
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397 on VMS, perhaps instead a string ending in `:', `]' or `>'.
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398 */ )
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399 (file)
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400 Lisp_Object file;
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401 {
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402 /* This function can GC */
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403 Bufbyte *beg;
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404 Bufbyte *p;
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405 Lisp_Object handler;
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406
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407 CHECK_STRING (file);
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408
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409 /* If the file name has special constructs in it,
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410 call the corresponding file handler. */
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411 handler = Ffind_file_name_handler (file, Qfile_name_directory);
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412 if (!NILP (handler))
|
|
|
413 {
|
|
|
414 Lisp_Object retval = call2 (handler, Qfile_name_directory,
|
|
|
415 file);
|
|
|
416
|
|
|
417 if (!NILP (retval))
|
|
|
418 CHECK_STRING (retval);
|
|
|
419 return retval;
|
|
|
420 }
|
|
|
421
|
|
|
422 #ifdef FILE_SYSTEM_CASE
|
|
|
423 file = FILE_SYSTEM_CASE (file);
|
|
|
424 #endif
|
|
|
425 beg = string_data (XSTRING (file));
|
|
|
426 p = beg + string_length (XSTRING (file));
|
|
|
427
|
|
|
428 while (p != beg && !IS_ANY_SEP (p[-1])
|
|
|
429 #ifdef VMS
|
|
|
430 && p[-1] != ':' && p[-1] != ']' && p[-1] != '>'
|
|
|
431 #endif /* VMS */
|
|
|
432 ) p--;
|
|
|
433
|
|
|
434 if (p == beg)
|
|
|
435 return Qnil;
|
|
|
436 #ifdef DOS_NT
|
|
|
437 /* Expansion of "c:" to drive and default directory. */
|
|
|
438 /* (NT does the right thing.) */
|
|
|
439 if (p == beg + 2 && beg[1] == ':')
|
|
|
440 {
|
|
|
441 int drive = (*beg) - 'a';
|
|
|
442 /* MAXPATHLEN+1 is guaranteed to be enough space for getdefdir. */
|
|
|
443 Bufbyte *res = (Bufbyte *) alloca (MAXPATHLEN + 5);
|
|
|
444 unsigned char *res1;
|
|
|
445 #ifdef WINDOWSNT
|
|
|
446 res1 = res;
|
|
|
447 /* The NT version places the drive letter at the beginning already. */
|
|
|
448 #else /* not WINDOWSNT */
|
|
|
449 /* On MSDOG we must put the drive letter in by hand. */
|
|
|
450 res1 = res + 2;
|
|
|
451 #endif /* not WINDOWSNT */
|
|
|
452 if (getdefdir (drive + 1, res))
|
|
|
453 {
|
|
|
454 #ifdef MSDOS
|
|
|
455 res[0] = drive + 'a';
|
|
|
456 res[1] = ':';
|
|
|
457 #endif /* MSDOS */
|
|
|
458 if (IS_DIRECTORY_SEP (res[strlen ((char *) res) - 1]))
|
|
|
459 strcat ((char *) res, "/");
|
|
|
460 beg = res;
|
|
|
461 p = beg + strlen ((char *) beg);
|
|
|
462 }
|
|
|
463 }
|
|
|
464 #endif /* DOS_NT */
|
|
|
465 return make_string (beg, p - beg);
|
|
|
466 }
|
|
|
467
|
|
|
468 DEFUN ("file-name-nondirectory", Ffile_name_nondirectory,
|
|
|
469 Sfile_name_nondirectory,
|
|
|
470 1, 1, 0 /*
|
|
|
471 Return file name NAME sans its directory.
|
|
|
472 For example, in a Unix-syntax file name,
|
|
|
473 this is everything after the last slash,
|
|
|
474 or the entire name if it contains no slash.
|
|
|
475 */ )
|
|
|
476 (file)
|
|
|
477 Lisp_Object file;
|
|
|
478 {
|
|
|
479 /* This function can GC */
|
|
|
480 Bufbyte *beg, *p, *end;
|
|
|
481 Lisp_Object handler;
|
|
|
482
|
|
|
483 CHECK_STRING (file);
|
|
|
484
|
|
|
485 /* If the file name has special constructs in it,
|
|
|
486 call the corresponding file handler. */
|
|
|
487 handler = Ffind_file_name_handler (file, Qfile_name_nondirectory);
|
|
|
488 if (!NILP (handler))
|
|
|
489 return (call2_check_string (handler, Qfile_name_nondirectory,
|
|
|
490 file));
|
|
|
491
|
|
|
492 beg = string_data (XSTRING (file));
|
|
|
493 end = p = beg + string_length (XSTRING (file));
|
|
|
494
|
|
|
495 while (p != beg && !IS_ANY_SEP (p[-1])
|
|
|
496 #ifdef VMS
|
|
|
497 && p[-1] != ':' && p[-1] != ']' && p[-1] != '>'
|
|
|
498 #endif /* VMS */
|
|
|
499 ) p--;
|
|
|
500
|
|
|
501 return make_string (p, end - p);
|
|
|
502 }
|
|
|
503
|
|
|
504 DEFUN ("unhandled-file-name-directory",
|
|
|
505 Funhandled_file_name_directory, Sunhandled_file_name_directory, 1, 1, 0 /*
|
|
|
506 Return a directly usable directory name somehow associated with FILENAME.
|
|
|
507 A `directly usable' directory name is one that may be used without the
|
|
|
508 intervention of any file handler.
|
|
|
509 If FILENAME is a directly usable file itself, return
|
|
|
510 (file-name-directory FILENAME).
|
|
|
511 The `call-process' and `start-process' functions use this function to
|
|
|
512 get a current directory to run processes in.
|
|
|
513 */ )
|
|
|
514 (filename)
|
|
|
515 Lisp_Object filename;
|
|
|
516 {
|
|
|
517 /* This function can GC */
|
|
|
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
|
|
|
606 DEFUN ("file-name-as-directory", Ffile_name_as_directory,
|
|
|
607 Sfile_name_as_directory, 1, 1, 0 /*
|
|
|
608 Return a string representing file FILENAME interpreted as a directory.
|
|
|
609 This operation exists because a directory is also a file, but its name as
|
|
|
610 a directory is different from its name as a file.
|
|
|
611 The result can be used as the value of `default-directory'
|
|
|
612 or passed as second argument to `expand-file-name'.
|
|
|
613 For a Unix-syntax file name, just appends a slash.
|
|
|
614 On VMS, converts \"[X]FOO.DIR\" to \"[X.FOO]\", etc.
|
|
|
615 */ )
|
|
|
616 (file)
|
|
|
617 Lisp_Object file;
|
|
|
618 {
|
|
|
619 /* This function can GC */
|
|
|
620 char *buf;
|
|
|
621 Lisp_Object handler;
|
|
|
622
|
|
|
623 CHECK_STRING (file);
|
|
|
624
|
|
|
625 /* If the file name has special constructs in it,
|
|
|
626 call the corresponding file handler. */
|
|
|
627 handler = Ffind_file_name_handler (file, Qfile_name_as_directory);
|
|
|
628 if (!NILP (handler))
|
|
|
629 return (call2_check_string (handler, Qfile_name_as_directory,
|
|
|
630 file));
|
|
|
631
|
|
|
632 buf = (char *) alloca (string_length (XSTRING (file)) + 10);
|
|
|
633 return build_string (file_name_as_directory
|
|
|
634 (buf, (char *) string_data (XSTRING (file))));
|
|
|
635 }
|
|
|
636
|
|
|
637 /*
|
|
|
638 * Convert from directory name to filename.
|
|
|
639 * On VMS:
|
|
|
640 * xyzzy:[mukesh.emacs] => xyzzy:[mukesh]emacs.dir.1
|
|
|
641 * xyzzy:[mukesh] => xyzzy:[000000]mukesh.dir.1
|
|
|
642 * On UNIX, it's simple: just make sure there is a terminating /
|
|
|
643
|
|
|
644 * Value is nonzero if the string output is different from the input.
|
|
|
645 */
|
|
|
646
|
|
|
647 static int
|
|
|
648 directory_file_name (CONST char *src, char *dst)
|
|
|
649 {
|
|
|
650 long slen;
|
|
|
651 #ifdef VMS
|
|
|
652 long rlen;
|
|
|
653 char * ptr, * rptr;
|
|
|
654 char bracket;
|
|
|
655 struct FAB fab = cc$rms_fab;
|
|
|
656 struct NAM nam = cc$rms_nam;
|
|
|
657 char esa[NAM$C_MAXRSS];
|
|
|
658 #endif /* VMS */
|
|
|
659
|
|
|
660 slen = strlen (src);
|
|
|
661 #ifdef VMS
|
|
|
662 if (! strchr (src, '/')
|
|
|
663 && (src[slen - 1] == ']'
|
|
|
664 || src[slen - 1] == ':'
|
|
|
665 || src[slen - 1] == '>'))
|
|
|
666 {
|
|
|
667 /* VMS style - convert [x.y.z] to [x.y]z, [x] to [000000]x */
|
|
|
668 fab.fab$l_fna = src;
|
|
|
669 fab.fab$b_fns = slen;
|
|
|
670 fab.fab$l_nam = &nam;
|
|
|
671 fab.fab$l_fop = FAB$M_NAM;
|
|
|
672
|
|
|
673 nam.nam$l_esa = esa;
|
|
|
674 nam.nam$b_ess = sizeof esa;
|
|
|
675 nam.nam$b_nop |= NAM$M_SYNCHK;
|
|
|
676
|
|
|
677 /* We call SYS$PARSE to handle such things as [--] for us. */
|
|
|
678 if (SYS$PARSE(&fab, 0, 0) == RMS$_NORMAL)
|
|
|
679 {
|
|
|
680 slen = nam.nam$b_esl;
|
|
|
681 if (esa[slen - 1] == ';' && esa[slen - 2] == '.')
|
|
|
682 slen -= 2;
|
|
|
683 esa[slen] = '\0';
|
|
|
684 src = esa;
|
|
|
685 }
|
|
|
686 if (src[slen - 1] != ']' && src[slen - 1] != '>')
|
|
|
687 {
|
|
|
688 /* what about when we have logical_name:???? */
|
|
|
689 if (src[slen - 1] == ':')
|
|
|
690 { /* Xlate logical name and see what we get */
|
|
|
691 ptr = strcpy (dst, src); /* upper case for getenv */
|
|
|
692 while (*ptr)
|
|
|
693 {
|
|
|
694 *ptr = toupper ((unsigned char) *ptr);
|
|
|
695 ptr++;
|
|
|
696 }
|
|
|
697 dst[slen - 1] = 0; /* remove colon */
|
|
|
698 if (!(src = egetenv (dst)))
|
|
|
699 return 0;
|
|
|
700 /* should we jump to the beginning of this procedure?
|
|
|
701 Good points: allows us to use logical names that xlate
|
|
|
702 to Unix names,
|
|
|
703 Bad points: can be a problem if we just translated to a device
|
|
|
704 name...
|
|
|
705 For now, I'll punt and always expect VMS names, and hope for
|
|
|
706 the best! */
|
|
|
707 slen = strlen (src);
|
|
|
708 if (src[slen - 1] != ']' && src[slen - 1] != '>')
|
|
|
709 { /* no recursion here! */
|
|
|
710 strcpy (dst, src);
|
|
|
711 return 0;
|
|
|
712 }
|
|
|
713 }
|
|
|
714 else
|
|
|
715 { /* not a directory spec */
|
|
|
716 strcpy (dst, src);
|
|
|
717 return 0;
|
|
|
718 }
|
|
|
719 }
|
|
|
720 bracket = src[slen - 1];
|
|
|
721
|
|
|
722 /* If bracket is ']' or '>', bracket - 2 is the corresponding
|
|
|
723 opening bracket. */
|
|
|
724 ptr = strchr (src, bracket - 2);
|
|
|
725 if (ptr == 0)
|
|
|
726 { /* no opening bracket */
|
|
|
727 strcpy (dst, src);
|
|
|
728 return 0;
|
|
|
729 }
|
|
|
730 if (!(rptr = strrchr (src, '.')))
|
|
|
731 rptr = ptr;
|
|
|
732 slen = rptr - src;
|
|
|
733 strncpy (dst, src, slen);
|
|
|
734 dst[slen] = '\0';
|
|
|
735 if (*rptr == '.')
|
|
|
736 {
|
|
|
737 dst[slen++] = bracket;
|
|
|
738 dst[slen] = '\0';
|
|
|
739 }
|
|
|
740 else
|
|
|
741 {
|
|
|
742 /* If we have the top-level of a rooted directory (i.e. xx:[000000]),
|
|
|
743 then translate the device and recurse. */
|
|
|
744 if (dst[slen - 1] == ':'
|
|
|
745 && dst[slen - 2] != ':' /* skip decnet nodes */
|
|
|
746 && strcmp(src + slen, "[000000]") == 0)
|
|
|
747 {
|
|
|
748 dst[slen - 1] = '\0';
|
|
|
749 if ((ptr = egetenv (dst))
|
|
|
750 && (rlen = strlen (ptr) - 1) > 0
|
|
|
751 && (ptr[rlen] == ']' || ptr[rlen] == '>')
|
|
|
752 && ptr[rlen - 1] == '.')
|
|
|
753 {
|
|
|
754 char * buf = (char *) alloca (strlen (ptr) + 1);
|
|
|
755 strcpy (buf, ptr);
|
|
|
756 buf[rlen - 1] = ']';
|
|
|
757 buf[rlen] = '\0';
|
|
|
758 return directory_file_name (buf, dst);
|
|
|
759 }
|
|
|
760 else
|
|
|
761 dst[slen - 1] = ':';
|
|
|
762 }
|
|
|
763 strcat (dst, "[000000]");
|
|
|
764 slen += 8;
|
|
|
765 }
|
|
|
766 rptr++;
|
|
|
767 rlen = strlen (rptr) - 1;
|
|
|
768 strncat (dst, rptr, rlen);
|
|
|
769 dst[slen + rlen] = '\0';
|
|
|
770 strcat (dst, ".DIR.1");
|
|
|
771 return 1;
|
|
|
772 }
|
|
|
773 #endif /* VMS */
|
|
|
774 /* Process as Unix format: just remove any final slash.
|
|
|
775 But leave "/" unchanged; do not change it to "". */
|
|
|
776 strcpy (dst, src);
|
|
|
777 #ifdef APOLLO
|
|
|
778 /* Handle // as root for apollo's. */
|
|
|
779 if ((slen > 2 && dst[slen - 1] == '/')
|
|
|
780 || (slen > 1 && dst[0] != '/' && dst[slen - 1] == '/'))
|
|
|
781 dst[slen - 1] = 0;
|
|
|
782 #else
|
|
|
783 if (slen > 1
|
|
|
784 && IS_DIRECTORY_SEP (dst[slen - 1])
|
|
|
785 #ifdef DOS_NT
|
|
|
786 && !IS_ANY_SEP (dst[slen - 2])
|
|
|
787 #endif
|
|
|
788 )
|
|
|
789 dst[slen - 1] = 0;
|
|
|
790 #endif
|
|
|
791 return 1;
|
|
|
792 }
|
|
|
793
|
|
|
794 DEFUN ("directory-file-name", Fdirectory_file_name, Sdirectory_file_name,
|
|
|
795 1, 1, 0 /*
|
|
|
796 Return the file name of the directory named DIR.
|
|
|
797 This is the name of the file that holds the data for the directory DIR.
|
|
|
798 This operation exists because a directory is also a file, but its name as
|
|
|
799 a directory is different from its name as a file.
|
|
|
800 In Unix-syntax, this function just removes the final slash.
|
|
|
801 On VMS, given a VMS-syntax directory name such as \"[X.Y]\",
|
|
|
802 it returns a file name such as \"[X]Y.DIR.1\".
|
|
|
803 */ )
|
|
|
804 (directory)
|
|
|
805 Lisp_Object directory;
|
|
|
806 {
|
|
|
807 /* This function can GC */
|
|
|
808 char *buf;
|
|
|
809 Lisp_Object handler;
|
|
|
810
|
|
|
811 CHECK_STRING (directory);
|
|
|
812
|
|
|
813 #if 0 /* #### WTF? */
|
|
|
814 if (NILP (directory))
|
|
|
815 return Qnil;
|
|
|
816 #endif
|
|
|
817
|
|
|
818 /* If the file name has special constructs in it,
|
|
|
819 call the corresponding file handler. */
|
|
|
820 handler = Ffind_file_name_handler (directory, Qdirectory_file_name);
|
|
|
821 if (!NILP (handler))
|
|
|
822 return (call2_check_string (handler, Qdirectory_file_name,
|
|
|
823 directory));
|
|
|
824 #ifdef VMS
|
|
|
825 /* 20 extra chars is insufficient for VMS, since we might perform a
|
|
|
826 logical name translation. an equivalence string can be up to 255
|
|
|
827 chars long, so grab that much extra space... - sss */
|
|
|
828 buf = (char *) alloca (string_length (XSTRING (directory)) + 20 + 255);
|
|
|
829 #else
|
|
|
830 buf = (char *) alloca (string_length (XSTRING (directory)) + 20);
|
|
|
831 #endif
|
|
|
832 directory_file_name ((char *) string_data (XSTRING (directory)), buf);
|
|
|
833 return build_string (buf);
|
|
|
834 }
|
|
|
835
|
|
|
836 DEFUN ("make-temp-name", Fmake_temp_name, Smake_temp_name, 1, 1, 0 /*
|
|
|
837 Generate temporary file name (string) starting with PREFIX (a string).
|
|
|
838 The Emacs process number forms part of the result,
|
|
|
839 so there is no danger of generating a name being used by another process.
|
|
|
840 */ )
|
|
|
841 (prefix)
|
|
|
842 Lisp_Object prefix;
|
|
|
843 {
|
|
|
844 CONST char suffix[] = "XXXXXX";
|
|
|
845 Bufbyte *data;
|
|
|
846 Bytecount len;
|
|
|
847 Lisp_Object val;
|
|
|
848
|
|
|
849 CHECK_STRING (prefix);
|
|
|
850 len = string_length (XSTRING (prefix));
|
|
|
851 val = make_uninit_string (len + countof (suffix) - 1);
|
|
|
852 data = string_data (XSTRING (val));
|
|
|
853 memcpy (data, string_data (XSTRING (prefix)), len);
|
|
|
854 memcpy (data + len, suffix, countof (suffix));
|
|
|
855 /* !!#### does mktemp() Mule-encapsulate? */
|
|
|
856 mktemp ((char *) data);
|
|
|
857
|
|
|
858 return val;
|
|
|
859 }
|
|
|
860
|
|
|
861 DEFUN ("expand-file-name", Fexpand_file_name, Sexpand_file_name, 1, 2, 0 /*
|
|
|
862 Convert FILENAME to absolute, and canonicalize it.
|
|
|
863 Second arg DEFAULT is directory to start with if FILENAME is relative
|
|
|
864 (does not start with slash); if DEFAULT is nil or missing,
|
|
|
865 the current buffer's value of default-directory is used.
|
|
|
866 Path components that are `.' are removed, and
|
|
|
867 path components followed by `..' are removed, along with the `..' itself;
|
|
|
868 note that these simplifications are done without checking the resulting
|
|
|
869 paths in the file system.
|
|
|
870 An initial `~/' expands to your home directory.
|
|
|
871 An initial `~USER/' expands to USER's home directory.
|
|
|
872 See also the function `substitute-in-file-name'.
|
|
|
873 */ )
|
|
|
874 (name, defalt)
|
|
|
875 Lisp_Object name, defalt;
|
|
|
876 {
|
|
|
877 /* This function can GC */
|
|
|
878 Bufbyte *nm;
|
|
|
879
|
|
|
880 Bufbyte *newdir, *p, *o;
|
|
|
881 int tlen;
|
|
|
882 Bufbyte *target;
|
|
|
883 struct passwd *pw;
|
|
|
884 #ifdef VMS
|
|
|
885 Bufbyte * colon = 0;
|
|
|
886 Bufbyte * close = 0;
|
|
|
887 Bufbyte * slash = 0;
|
|
|
888 Bufbyte * brack = 0;
|
|
|
889 int lbrack = 0, rbrack = 0;
|
|
|
890 int dots = 0;
|
|
|
891 #endif /* VMS */
|
|
|
892 #ifdef DOS_NT
|
|
|
893 /* Demacs 1.1.2 91/10/20 Manabu Higashida */
|
|
|
894 int drive = -1;
|
|
|
895 int relpath = 0;
|
|
|
896 Bufbyte *tmp, *defdir;
|
|
|
897 #endif /* DOS_NT */
|
|
|
898 Lisp_Object handler;
|
|
|
899
|
|
|
900 CHECK_STRING (name);
|
|
|
901
|
|
|
902 /* If the file name has special constructs in it,
|
|
|
903 call the corresponding file handler. */
|
|
|
904 handler = Ffind_file_name_handler (name, Qexpand_file_name);
|
|
|
905 if (!NILP (handler))
|
|
|
906 return (call3_check_string (handler, Qexpand_file_name, name,
|
|
|
907 defalt));
|
|
|
908
|
|
|
909 /* Use the buffer's default-directory if DEFALT is omitted. */
|
|
|
910 if (NILP (defalt))
|
|
|
911 defalt = current_buffer->directory;
|
|
|
912 if (NILP (defalt)) /* this should be a meaningful error */
|
|
|
913 {
|
|
|
914 /* #### If we had a minibuffer-only frame up then current_buffer
|
|
|
915 is likely to not have a directory setting. We should
|
|
|
916 probably redo things to make sure that current_buffer stays
|
|
|
917 set to something sensible. */
|
|
|
918 if (!preparing_for_armageddon)
|
|
|
919 signal_simple_error ("default-directory is not set",
|
|
|
920 make_buffer (current_buffer));
|
|
|
921 }
|
|
|
922 else
|
|
|
923 CHECK_STRING (defalt);
|
|
|
924
|
|
|
925 if (!NILP (defalt))
|
|
|
926 {
|
|
|
927 handler = Ffind_file_name_handler (defalt, Qexpand_file_name);
|
|
|
928 if (!NILP (handler))
|
|
|
929 return call3 (handler, Qexpand_file_name, name, defalt);
|
|
|
930 }
|
|
|
931
|
|
|
932 /* Make sure DEFALT is properly expanded.
|
|
|
933 It would be better to do this down below where we actually use
|
|
|
934 defalt. Unfortunately, calling Fexpand_file_name recursively
|
|
|
935 could invoke GC, and the strings might be relocated. This would
|
|
|
936 be annoying because we have pointers into strings lying around
|
|
|
937 that would need adjusting, and people would add new pointers to
|
|
|
938 the code and forget to adjust them, resulting in intermittent bugs.
|
|
|
939 Putting this call here avoids all that crud.
|
|
|
940
|
|
|
941 The EQ test avoids infinite recursion. */
|
|
|
942 if (! NILP (defalt) && !EQ (defalt, name)
|
|
|
943 /* This saves time in a common case. */
|
|
|
944 && ! (string_length (XSTRING (defalt)) >= 3
|
|
|
945 && IS_DIRECTORY_SEP (string_byte (XSTRING (defalt), 0))
|
|
|
946 && IS_DEVICE_SEP (string_byte (XSTRING (defalt), 1))))
|
|
|
947 {
|
|
|
948 struct gcpro gcpro1;
|
|
|
949
|
|
|
950 GCPRO1 (name);
|
|
|
951 defalt = Fexpand_file_name (defalt, Qnil);
|
|
|
952 UNGCPRO;
|
|
|
953 }
|
|
|
954
|
|
|
955 #ifdef VMS
|
|
|
956 /* Filenames on VMS are always upper case. */
|
|
|
957 name = Fupcase (name, Fcurrent_buffer ());
|
|
|
958 #endif
|
|
|
959 #ifdef FILE_SYSTEM_CASE
|
|
|
960 name = FILE_SYSTEM_CASE (name);
|
|
|
961 #endif
|
|
|
962
|
|
|
963 nm = string_data (XSTRING (name));
|
|
|
964
|
|
|
965 #ifdef MSDOS
|
|
|
966 /* First map all backslashes to slashes. */
|
|
|
967 dostounix_filename (nm = strcpy (alloca (strlen (nm) + 1), nm));
|
|
|
968 #endif
|
|
|
969
|
|
|
970 #ifdef DOS_NT
|
|
|
971 /* Now strip drive name. */
|
|
|
972 {
|
|
|
973 Bufbyte *colon = strrchr (nm, ':');
|
|
|
974 if (colon)
|
|
|
975 if (nm == colon)
|
|
|
976 nm++;
|
|
|
977 else
|
|
|
978 {
|
|
|
979 drive = colon[-1];
|
|
|
980 nm = colon + 1;
|
|
|
981 if (!IS_DIRECTORY_SEP (*nm))
|
|
|
982 {
|
|
|
983 defdir = alloca (MAXPATHLEN + 1);
|
|
|
984 relpath = getdefdir (tolower (drive) - 'a' + 1, defdir);
|
|
|
985 }
|
|
|
986 }
|
|
|
987 }
|
|
|
988 #endif /* DOS_NT */
|
|
|
989
|
|
|
990 /* Handle // and /~ in middle of file name
|
|
|
991 by discarding everything through the first / of that sequence. */
|
|
|
992 p = nm;
|
|
|
993 while (*p)
|
|
|
994 {
|
|
|
995 /* Since we know the path is absolute, we can assume that each
|
|
|
996 element starts with a "/". */
|
|
|
997
|
|
|
998 /* "//" anywhere isn't necessarily hairy; we just start afresh
|
|
|
999 with the second slash. */
|
|
|
1000 if (IS_DIRECTORY_SEP (p[0]) && IS_DIRECTORY_SEP (p[1])
|
|
|
1001 #if defined (APOLLO) || defined (WINDOWSNT)
|
|
|
1002 /* // at start of filename is meaningful on Apollo
|
|
|
1003 and WindowsNT systems */
|
|
|
1004 && nm != p
|
|
|
1005 #endif /* APOLLO || WINDOWSNT */
|
|
|
1006 )
|
|
|
1007 nm = p + 1;
|
|
|
1008
|
|
|
1009 /* "~" is hairy as the start of any path element. */
|
|
|
1010 if (IS_DIRECTORY_SEP (p[0]) && p[1] == '~')
|
|
|
1011 nm = p + 1;
|
|
|
1012
|
|
|
1013 p++;
|
|
|
1014 }
|
|
|
1015
|
|
|
1016 /* If nm is absolute, flush ...// and detect /./ and /../.
|
|
|
1017 If no /./ or /../ we can return right away. */
|
|
|
1018 if (
|
|
|
1019 IS_DIRECTORY_SEP (nm[0])
|
|
|
1020 #ifdef VMS
|
|
|
1021 || strchr (nm, ':')
|
|
|
1022 #endif /* VMS */
|
|
|
1023 )
|
|
|
1024 {
|
|
|
1025 /* If it turns out that the filename we want to return is just a
|
|
|
1026 suffix of FILENAME, we don't need to go through and edit
|
|
|
1027 things; we just need to construct a new string using data
|
|
|
1028 starting at the middle of FILENAME. If we set lose to a
|
|
|
1029 non-zero value, that means we've discovered that we can't do
|
|
|
1030 that cool trick. */
|
|
|
1031 int lose = 0;
|
|
|
1032
|
|
|
1033 p = nm;
|
|
|
1034 while (*p)
|
|
|
1035 {
|
|
|
1036 /* Since we know the path is absolute, we can assume that each
|
|
|
1037 element starts with a "/". */
|
|
|
1038
|
|
|
1039 /* "." and ".." are hairy. */
|
|
|
1040 if (IS_DIRECTORY_SEP (p[0])
|
|
|
1041 && p[1] == '.'
|
|
|
1042 && (IS_DIRECTORY_SEP (p[2])
|
|
|
1043 || p[2] == 0
|
|
|
1044 || (p[2] == '.' && (IS_DIRECTORY_SEP (p[3])
|
|
|
1045 || p[3] == 0))))
|
|
|
1046 lose = 1;
|
|
|
1047 #ifdef VMS
|
|
|
1048 if (p[0] == '\\')
|
|
|
1049 lose = 1;
|
|
|
1050 if (p[0] == '/') {
|
|
|
1051 /* if dev:[dir]/, move nm to / */
|
|
|
1052 if (!slash && p > nm && (brack || colon)) {
|
|
|
1053 nm = (brack ? brack + 1 : colon + 1);
|
|
|
1054 lbrack = rbrack = 0;
|
|
|
1055 brack = 0;
|
|
|
1056 colon = 0;
|
|
|
1057 }
|
|
|
1058 slash = p;
|
|
|
1059 }
|
|
|
1060 if (p[0] == '-')
|
|
|
1061 #ifndef VMS4_4
|
|
|
1062 /* VMS pre V4.4,convert '-'s in filenames. */
|
|
|
1063 if (lbrack == rbrack)
|
|
|
1064 {
|
|
|
1065 if (dots < 2) /* this is to allow negative version numbers */
|
|
|
1066 p[0] = '_';
|
|
|
1067 }
|
|
|
1068 else
|
|
|
1069 #endif /* VMS4_4 */
|
|
|
1070 if (lbrack > rbrack &&
|
|
|
1071 ((p[-1] == '.' || p[-1] == '[' || p[-1] == '<') &&
|
|
|
1072 (p[1] == '.' || p[1] == ']' || p[1] == '>')))
|
|
|
1073 lose = 1;
|
|
|
1074 #ifndef VMS4_4
|
|
|
1075 else
|
|
|
1076 p[0] = '_';
|
|
|
1077 #endif /* VMS4_4 */
|
|
|
1078 /* count open brackets, reset close bracket pointer */
|
|
|
1079 if (p[0] == '[' || p[0] == '<')
|
|
|
1080 lbrack++, brack = 0;
|
|
|
1081 /* count close brackets, set close bracket pointer */
|
|
|
1082 if (p[0] == ']' || p[0] == '>')
|
|
|
1083 rbrack++, brack = p;
|
|
|
1084 /* detect ][ or >< */
|
|
|
1085 if ((p[0] == ']' || p[0] == '>') && (p[1] == '[' || p[1] == '<'))
|
|
|
1086 lose = 1;
|
|
|
1087 if ((p[0] == ':' || p[0] == ']' || p[0] == '>') && p[1] == '~')
|
|
|
1088 nm = p + 1, lose = 1;
|
|
|
1089 if (p[0] == ':' && (colon || slash))
|
|
|
1090 /* if dev1:[dir]dev2:, move nm to dev2: */
|
|
|
1091 if (brack)
|
|
|
1092 {
|
|
|
1093 nm = brack + 1;
|
|
|
1094 brack = 0;
|
|
|
1095 }
|
|
|
1096 /* if /pathname/dev:, move nm to dev: */
|
|
|
1097 else if (slash)
|
|
|
1098 nm = slash + 1;
|
|
|
1099 /* if node::dev:, move colon following dev */
|
|
|
1100 else if (colon && colon[-1] == ':')
|
|
|
1101 colon = p;
|
|
|
1102 /* if dev1:dev2:, move nm to dev2: */
|
|
|
1103 else if (colon && colon[-1] != ':')
|
|
|
1104 {
|
|
|
1105 nm = colon + 1;
|
|
|
1106 colon = 0;
|
|
|
1107 }
|
|
|
1108 if (p[0] == ':' && !colon)
|
|
|
1109 {
|
|
|
1110 if (p[1] == ':')
|
|
|
1111 p++;
|
|
|
1112 colon = p;
|
|
|
1113 }
|
|
|
1114 if (lbrack == rbrack)
|
|
|
1115 if (p[0] == ';')
|
|
|
1116 dots = 2;
|
|
|
1117 else if (p[0] == '.')
|
|
|
1118 dots++;
|
|
|
1119 #endif /* VMS */
|
|
|
1120 p++;
|
|
|
1121 }
|
|
|
1122 if (!lose)
|
|
|
1123 {
|
|
|
1124 #ifdef VMS
|
|
|
1125 if (strchr (nm, '/'))
|
|
|
1126 return build_string (sys_translate_unix (nm));
|
|
|
1127 #endif /* VMS */
|
|
|
1128 #ifndef DOS_NT
|
|
|
1129 if (nm == string_data (XSTRING (name)))
|
|
|
1130 return name;
|
|
|
1131 return build_string ((char *) nm);
|
|
|
1132 #endif /* not DOS_NT */
|
|
|
1133 }
|
|
|
1134 }
|
|
|
1135
|
|
|
1136 /* Now determine directory to start with and put it in newdir */
|
|
|
1137
|
|
|
1138 newdir = 0;
|
|
|
1139
|
|
|
1140 if (nm[0] == '~') /* prefix ~ */
|
|
|
1141 {
|
|
|
1142 if (IS_DIRECTORY_SEP (nm[1])
|
|
|
1143 #ifdef VMS
|
|
|
1144 || nm[1] == ':'
|
|
|
1145 #endif /* VMS */
|
|
|
1146 || nm[1] == 0) /* ~ by itself */
|
|
|
1147 {
|
|
|
1148 if (!(newdir = (Bufbyte *) egetenv ("HOME")))
|
|
|
1149 newdir = (Bufbyte *) "";
|
|
|
1150 #ifdef DOS_NT
|
|
|
1151 /* Problem when expanding "~\" if HOME is not on current drive.
|
|
|
1152 Ulrich Leodolter, Wed Jan 11 10:20:35 1995 */
|
|
|
1153 if (newdir[1] == ':')
|
|
|
1154 drive = newdir[0];
|
|
|
1155 dostounix_filename (newdir);
|
|
|
1156 #endif
|
|
|
1157 nm++;
|
|
|
1158 #ifdef VMS
|
|
|
1159 nm++; /* Don't leave the slash in nm. */
|
|
|
1160 #endif /* VMS */
|
|
|
1161 }
|
|
|
1162 else /* ~user/filename */
|
|
|
1163 {
|
|
|
1164 for (p = nm; *p && (!IS_DIRECTORY_SEP (*p)
|
|
|
1165 #ifdef VMS
|
|
|
1166 && *p != ':'
|
|
|
1167 #endif /* VMS */
|
|
|
1168 ); p++);
|
|
|
1169 o = (Bufbyte *) alloca (p - nm + 1);
|
|
|
1170 memcpy (o, (char *) nm, p - nm);
|
|
|
1171 o [p - nm] = 0;
|
|
|
1172
|
|
|
1173 #ifdef WINDOWSNT
|
|
|
1174 newdir = (unsigned char *) egetenv ("HOME");
|
|
|
1175 dostounix_filename (newdir);
|
|
|
1176 #else /* not WINDOWSNT */
|
|
|
1177 /* Jamie reports that getpwnam() can get wedged by SIGIO/SIGALARM
|
|
|
1178 occurring in it. (It can call select()). */
|
|
|
1179 slow_down_interrupts ();
|
|
|
1180 pw = (struct passwd *) getpwnam ((char *) o + 1);
|
|
|
1181 speed_up_interrupts ();
|
|
|
1182 if (pw)
|
|
|
1183 {
|
|
|
1184 newdir = (Bufbyte *) pw -> pw_dir;
|
|
|
1185 #ifdef VMS
|
|
|
1186 nm = p + 1; /* skip the terminator */
|
|
|
1187 #else
|
|
|
1188 nm = p;
|
|
|
1189 #endif /* VMS */
|
|
|
1190 }
|
|
|
1191 #endif /* not WINDOWSNT */
|
|
|
1192
|
|
|
1193 /* If we don't find a user of that name, leave the name
|
|
|
1194 unchanged; don't move nm forward to p. */
|
|
|
1195 }
|
|
|
1196 }
|
|
|
1197
|
|
|
1198 if (!IS_ANY_SEP (nm[0])
|
|
|
1199 #ifdef VMS
|
|
|
1200 && !strchr (nm, ':')
|
|
|
1201 #endif /* not VMS */
|
|
|
1202 #ifdef DOS_NT
|
|
|
1203 && drive == -1
|
|
|
1204 #endif /* DOS_NT */
|
|
|
1205 && !newdir
|
|
|
1206 && STRINGP (defalt))
|
|
|
1207 {
|
|
|
1208 newdir = string_data (XSTRING (defalt));
|
|
|
1209 }
|
|
|
1210
|
|
|
1211 #ifdef DOS_NT
|
|
|
1212 if (newdir == 0 && relpath)
|
|
|
1213 newdir = defdir;
|
|
|
1214 #endif /* DOS_NT */
|
|
|
1215 if (newdir != 0)
|
|
|
1216 {
|
|
|
1217 /* Get rid of any slash at the end of newdir. */
|
|
|
1218 int length = strlen ((char *) newdir);
|
|
|
1219 /* Adding `length > 1 &&' makes ~ expand into / when homedir
|
|
|
1220 is the root dir. People disagree about whether that is right.
|
|
|
1221 Anyway, we can't take the risk of this change now. */
|
|
|
1222 #ifdef DOS_NT
|
|
|
1223 if (newdir[1] != ':' && length > 1)
|
|
|
1224 #endif
|
|
|
1225 if (IS_DIRECTORY_SEP (newdir[length - 1]))
|
|
|
1226 {
|
|
|
1227 Bufbyte *temp = (Bufbyte *) alloca (length);
|
|
|
1228 memcpy (temp, newdir, length - 1);
|
|
|
1229 temp[length - 1] = 0;
|
|
|
1230 newdir = temp;
|
|
|
1231 }
|
|
|
1232 tlen = length + 1;
|
|
|
1233 }
|
|
|
1234 else
|
|
|
1235 tlen = 0;
|
|
|
1236
|
|
|
1237 /* Now concatenate the directory and name to new space in the stack frame */
|
|
|
1238 tlen += strlen ((char *) nm) + 1;
|
|
|
1239 #ifdef DOS_NT
|
|
|
1240 /* Add reserved space for drive name. (The Microsoft x86 compiler
|
|
|
1241 produces incorrect code if the following two lines are combined.) */
|
|
|
1242 target = (Bufbyte *) alloca (tlen + 2);
|
|
|
1243 target += 2;
|
|
|
1244 #else /* not DOS_NT */
|
|
|
1245 target = (Bufbyte *) alloca (tlen);
|
|
|
1246 #endif /* not DOS_NT */
|
|
|
1247 *target = 0;
|
|
|
1248
|
|
|
1249 if (newdir)
|
|
|
1250 {
|
|
|
1251 #ifndef VMS
|
|
|
1252 if (nm[0] == 0 || IS_DIRECTORY_SEP (nm[0]))
|
|
|
1253 strcpy ((char *) target, (char *) newdir);
|
|
|
1254 else
|
|
|
1255 #endif
|
|
|
1256 file_name_as_directory ((char *) target, (char *) newdir);
|
|
|
1257 }
|
|
|
1258
|
|
|
1259 strcat ((char *) target, (char *) nm);
|
|
|
1260 #ifdef VMS
|
|
|
1261 if (strchr (target, '/'))
|
|
|
1262 strcpy (target, sys_translate_unix (target));
|
|
|
1263 #endif /* VMS */
|
|
|
1264
|
|
|
1265 /* Now canonicalize by removing /. and /foo/.. if they appear. */
|
|
|
1266
|
|
|
1267 p = target;
|
|
|
1268 o = target;
|
|
|
1269
|
|
|
1270 while (*p)
|
|
|
1271 {
|
|
|
1272 #ifdef VMS
|
|
|
1273 if (*p != ']' && *p != '>' && *p != '-')
|
|
|
1274 {
|
|
|
1275 if (*p == '\\')
|
|
|
1276 p++;
|
|
|
1277 *o++ = *p++;
|
|
|
1278 }
|
|
|
1279 else if ((p[0] == ']' || p[0] == '>') && p[0] == p[1] + 2)
|
|
|
1280 /* brackets are offset from each other by 2 */
|
|
|
1281 {
|
|
|
1282 p += 2;
|
|
|
1283 if (*p != '.' && *p != '-' && o[-1] != '.')
|
|
|
1284 /* convert [foo][bar] to [bar] */
|
|
|
1285 while (o[-1] != '[' && o[-1] != '<')
|
|
|
1286 o--;
|
|
|
1287 else if (*p == '-' && *o != '.')
|
|
|
1288 *--p = '.';
|
|
|
1289 }
|
|
|
1290 else if (p[0] == '-' && o[-1] == '.' &&
|
|
|
1291 (p[1] == '.' || p[1] == ']' || p[1] == '>'))
|
|
|
1292 /* flush .foo.- ; leave - if stopped by '[' or '<' */
|
|
|
1293 {
|
|
|
1294 do
|
|
|
1295 o--;
|
|
|
1296 while (o[-1] != '.' && o[-1] != '[' && o[-1] != '<');
|
|
|
1297 if (p[1] == '.') /* foo.-.bar ==> bar. */
|
|
|
1298 p += 2;
|
|
|
1299 else if (o[-1] == '.') /* '.foo.-]' ==> ']' */
|
|
|
1300 p++, o--;
|
|
|
1301 /* else [foo.-] ==> [-] */
|
|
|
1302 }
|
|
|
1303 else
|
|
|
1304 {
|
|
|
1305 #ifndef VMS4_4
|
|
|
1306 if (*p == '-' &&
|
|
|
1307 o[-1] != '[' && o[-1] != '<' && o[-1] != '.' &&
|
|
|
1308 p[1] != ']' && p[1] != '>' && p[1] != '.')
|
|
|
1309 *p = '_';
|
|
|
1310 #endif /* VMS4_4 */
|
|
|
1311 *o++ = *p++;
|
|
|
1312 }
|
|
|
1313 #else /* not VMS */
|
|
|
1314 if (!IS_DIRECTORY_SEP (*p))
|
|
|
1315 {
|
|
|
1316 *o++ = *p++;
|
|
|
1317 }
|
|
|
1318 else if (IS_DIRECTORY_SEP (p[0]) && IS_DIRECTORY_SEP (p[1])
|
|
|
1319 #if defined (APOLLO) || defined (WINDOWSNT)
|
|
|
1320 /* // at start of filename is meaningful in Apollo
|
|
|
1321 and WindowsNT systems */
|
|
|
1322 && o != target
|
|
|
1323 #endif /* APOLLO */
|
|
|
1324 )
|
|
|
1325 {
|
|
|
1326 o = target;
|
|
|
1327 p++;
|
|
|
1328 }
|
|
|
1329 else if (IS_DIRECTORY_SEP (p[0])
|
|
|
1330 && p[1] == '.'
|
|
|
1331 && (IS_DIRECTORY_SEP (p[2])
|
|
|
1332 || p[2] == 0))
|
|
|
1333 {
|
|
|
1334 /* If "/." is the entire filename, keep the "/". Otherwise,
|
|
|
1335 just delete the whole "/.". */
|
|
|
1336 if (o == target && p[2] == '\0')
|
|
|
1337 *o++ = *p;
|
|
|
1338 p += 2;
|
|
|
1339 }
|
|
|
1340 else if (IS_DIRECTORY_SEP (p[0]) && p[1] == '.' && p[2] == '.'
|
|
|
1341 /* `/../' is the "superroot" on certain file systems. */
|
|
|
1342 && o != target
|
|
|
1343 && (IS_DIRECTORY_SEP (p[3]) || p[3] == 0))
|
|
|
1344 {
|
|
|
1345 while (o != target && (--o) && !IS_DIRECTORY_SEP (*o))
|
|
|
1346 ;
|
|
|
1347 #if defined (APOLLO) || defined (WINDOWSNT)
|
|
|
1348 if (o == target + 1
|
|
|
1349 && IS_DIRECTORY_SEP (o[-1]) && IS_DIRECTORY_SEP (o[0]))
|
|
|
1350 ++o;
|
|
|
1351 else
|
|
|
1352 #endif /* APOLLO || WINDOWSNT */
|
|
|
1353 if (o == target && IS_ANY_SEP (*o))
|
|
|
1354 ++o;
|
|
|
1355 p += 3;
|
|
|
1356 }
|
|
|
1357 else
|
|
|
1358 {
|
|
|
1359 *o++ = *p++;
|
|
|
1360 }
|
|
|
1361 #endif /* not VMS */
|
|
|
1362 }
|
|
|
1363
|
|
|
1364 #ifdef DOS_NT
|
|
|
1365 /* at last, set drive name. */
|
|
|
1366 if (target[1] != ':'
|
|
|
1367 #ifdef WINDOWSNT
|
|
|
1368 /* Allow network paths that look like "\\foo" */
|
|
|
1369 && !(IS_DIRECTORY_SEP (target[0]) && IS_DIRECTORY_SEP (target[1]))
|
|
|
1370 #endif /* WINDOWSNT */
|
|
|
1371 )
|
|
|
1372 {
|
|
|
1373 target -= 2;
|
|
|
1374 target[0] = (drive < 0 ? getdisk () + 'A' : drive);
|
|
|
1375 target[1] = ':';
|
|
|
1376 }
|
|
|
1377 #endif /* DOS_NT */
|
|
|
1378
|
|
|
1379 return make_string (target, o - target);
|
|
|
1380 }
|
|
|
1381
|
|
|
1382 #if 0 /* FSFmacs */
|
|
|
1383 another older version of expand-file-name;
|
|
|
1384 #endif
|
|
|
1385
|
|
|
1386 /* not a full declaration because realpath() is typed differently
|
|
|
1387 on different systems */
|
|
|
1388 extern char *realpath ();
|
|
|
1389
|
|
|
1390 DEFUN ("file-truename", Ffile_truename, Sfile_truename, 1, 2, 0 /*
|
|
|
1391 Return the canonical name of the given FILE.
|
|
|
1392 Second arg DEFAULT is directory to start with if FILE is relative
|
|
|
1393 (does not start with slash); if DEFAULT is nil or missing,
|
|
|
1394 the current buffer's value of default-directory is used.
|
|
|
1395 No component of the resulting pathname will be a symbolic link, as
|
|
|
1396 in the realpath() function.
|
|
|
1397 */ )
|
|
|
1398 (filename, defalt)
|
|
|
1399 Lisp_Object filename, defalt;
|
|
|
1400 {
|
|
|
1401 /* This function can GC */
|
|
|
1402 struct gcpro gcpro1;
|
|
|
1403 Lisp_Object expanded_name;
|
|
|
1404 Lisp_Object handler;
|
|
|
1405
|
|
|
1406 CHECK_STRING (filename);
|
|
|
1407
|
|
|
1408 GCPRO1 (filename);
|
|
|
1409 expanded_name = Fexpand_file_name (filename, defalt);
|
|
|
1410 UNGCPRO;
|
|
|
1411
|
|
|
1412 if (!STRINGP (expanded_name))
|
|
|
1413 return Qnil;
|
|
|
1414
|
|
|
1415 GCPRO1 (expanded_name);
|
|
|
1416 handler = Ffind_file_name_handler (expanded_name, Qfile_truename);
|
|
|
1417 UNGCPRO;
|
|
|
1418
|
|
|
1419 if (!NILP (handler))
|
|
|
1420 return (call2_check_string (handler, Qfile_truename,
|
|
|
1421 expanded_name));
|
|
|
1422
|
|
|
1423 #ifdef VMS
|
|
|
1424 return (expanded_name);
|
|
|
1425 #else
|
|
|
1426 {
|
|
|
1427 char resolved_path[MAXPATHLEN];
|
|
|
1428 char path[MAXPATHLEN];
|
|
|
1429 char *p = path;
|
|
|
1430 int elen = string_length (XSTRING (expanded_name));
|
|
|
1431
|
|
|
1432 if (elen >= countof (path))
|
|
|
1433 goto toolong;
|
|
|
1434
|
|
|
1435 memcpy (path, string_data (XSTRING (expanded_name)), elen + 1);
|
|
|
1436 /* memset (resolved_path, 0, sizeof (resolved_path)); */
|
|
|
1437
|
|
|
1438 /* Try doing it all at once. */
|
|
|
1439 /* !!#### Does realpath() Mule-encapsulate? */
|
|
|
1440 if (!realpath (path, resolved_path))
|
|
|
1441 {
|
|
|
1442 /* Didn't resolve it -- have to do it one component at a time. */
|
|
|
1443 /* "realpath" is a typically useless, stupid un*x piece of crap.
|
|
|
1444 It claims to return a useful value in the "error" case, but since
|
|
|
1445 there is no indication provided of how far along the pathname
|
|
|
1446 the function went before erring, there is no way to use the
|
|
|
1447 partial result returned. What a piece of junk. */
|
|
|
1448 for (;;)
|
|
|
1449 {
|
|
|
1450 p = (char *) memchr (p + 1, '/', elen - (p + 1 - path));
|
|
|
1451 if (p)
|
|
|
1452 *p = 0;
|
|
|
1453
|
|
|
1454 /* memset (resolved_path, 0, sizeof (resolved_path)); */
|
|
|
1455 if (realpath (path, resolved_path))
|
|
|
1456 {
|
|
|
1457 if (p)
|
|
|
1458 *p = '/';
|
|
|
1459 else
|
|
|
1460 break;
|
|
|
1461
|
|
|
1462 }
|
|
|
1463 else if (errno == ENOENT)
|
|
|
1464 {
|
|
|
1465 /* Failed on this component. Just tack on the rest of
|
|
|
1466 the string and we are done. */
|
|
|
1467 int rlen = strlen (resolved_path);
|
|
|
1468
|
|
|
1469 /* "On failure, it returns NULL, sets errno to indicate
|
|
|
1470 the error, and places in resolved_path the absolute pathname
|
|
|
1471 of the path component which could not be resolved." */
|
|
|
1472 if (p)
|
|
|
1473 {
|
|
|
1474 int plen = elen - (p - path);
|
|
|
1475
|
|
|
1476 if (rlen > 1 && resolved_path[rlen - 1] == '/')
|
|
|
1477 rlen = rlen - 1;
|
|
|
1478
|
|
|
1479 if (plen + rlen + 1 > countof (resolved_path))
|
|
|
1480 goto toolong;
|
|
|
1481
|
|
|
1482 resolved_path[rlen] = '/';
|
|
|
1483 memcpy (resolved_path + rlen + 1, p + 1, plen + 1 - 1);
|
|
|
1484 }
|
|
|
1485 break;
|
|
|
1486 }
|
|
|
1487 else
|
|
|
1488 goto lose;
|
|
|
1489 }
|
|
|
1490 }
|
|
|
1491
|
|
|
1492 {
|
|
|
1493 int rlen = strlen (resolved_path);
|
|
|
1494 if (elen > 0 && string_byte (XSTRING (expanded_name), elen - 1) == '/'
|
|
|
1495 && !(rlen > 0 && resolved_path[rlen - 1] == '/'))
|
|
|
1496 {
|
|
|
1497 if (rlen + 1 > countof (resolved_path))
|
|
|
1498 goto toolong;
|
|
|
1499 resolved_path[rlen] = '/';
|
|
|
1500 resolved_path[rlen + 1] = 0;
|
|
|
1501 rlen = rlen + 1;
|
|
|
1502 }
|
|
|
1503 return make_string ((Bufbyte *) resolved_path, rlen);
|
|
|
1504 }
|
|
|
1505
|
|
|
1506 toolong:
|
|
|
1507 errno = ENAMETOOLONG;
|
|
|
1508 goto lose;
|
|
|
1509 lose:
|
|
|
1510 report_file_error ("Finding truename", list1 (expanded_name));
|
|
|
1511 }
|
|
|
1512 return Qnil; /* suppress compiler warning */
|
|
|
1513 #endif /* not VMS */
|
|
|
1514 }
|
|
|
1515
|
|
|
1516
|
|
|
1517 DEFUN ("substitute-in-file-name", Fsubstitute_in_file_name,
|
|
|
1518 Ssubstitute_in_file_name, 1, 1, 0 /*
|
|
|
1519 Substitute environment variables referred to in FILENAME.
|
|
|
1520 `$FOO' where FOO is an environment variable name means to substitute
|
|
|
1521 the value of that variable. The variable name should be terminated
|
|
|
1522 with a character not a letter, digit or underscore; otherwise, enclose
|
|
|
1523 the entire variable name in braces.
|
|
|
1524 If `/~' appears, all of FILENAME through that `/' is discarded.
|
|
|
1525
|
|
|
1526 On VMS, `$' substitution is not done; this function does little and only
|
|
|
1527 duplicates what `expand-file-name' does.
|
|
|
1528 */ )
|
|
|
1529 (string)
|
|
|
1530 Lisp_Object string;
|
|
|
1531 {
|
|
|
1532 Bufbyte *nm;
|
|
|
1533
|
|
|
1534 Bufbyte *s, *p, *o, *x, *endp;
|
|
|
1535 Bufbyte *target = 0;
|
|
|
1536 int total = 0;
|
|
|
1537 int substituted = 0;
|
|
|
1538 Bufbyte *xnm;
|
|
|
1539 Lisp_Object handler;
|
|
|
1540
|
|
|
1541 CHECK_STRING (string);
|
|
|
1542
|
|
|
1543 /* If the file name has special constructs in it,
|
|
|
1544 call the corresponding file handler. */
|
|
|
1545 handler = Ffind_file_name_handler (string, Qsubstitute_in_file_name);
|
|
|
1546 if (!NILP (handler))
|
|
|
1547 {
|
|
|
1548 Lisp_Object retval = call2 (handler, Qsubstitute_in_file_name,
|
|
|
1549 string);
|
|
|
1550
|
|
|
1551 if (!NILP (retval))
|
|
|
1552 CHECK_STRING (retval);
|
|
|
1553 return retval;
|
|
|
1554 }
|
|
|
1555
|
|
|
1556 nm = string_data (XSTRING (string));
|
|
|
1557 #ifdef MSDOS
|
|
|
1558 dostounix_filename (nm = strcpy (alloca (strlen (nm) + 1), nm));
|
|
|
1559 substituted = !strcmp (nm, string_data (XSTRING (string)));
|
|
|
1560 #endif
|
|
|
1561 endp = nm + string_length (XSTRING (string));
|
|
|
1562
|
|
|
1563 /* If /~ or // appears, discard everything through first slash. */
|
|
|
1564
|
|
|
1565 for (p = nm; p != endp; p++)
|
|
|
1566 {
|
|
|
1567 if ((p[0] == '~' ||
|
|
|
1568 #ifdef APOLLO
|
|
|
1569 /* // at start of file name is meaningful in Apollo system */
|
|
|
1570 (p[0] == '/' && p - 1 != nm)
|
|
|
1571 #else /* not APOLLO */
|
|
|
1572 #ifdef WINDOWSNT
|
|
|
1573 (IS_DIRECTORY_SEP (p[0]) && p - 1 != nm)
|
|
|
1574 #else /* not WINDOWSNT */
|
|
|
1575 p[0] == '/'
|
|
|
1576 #endif /* not WINDOWSNT */
|
|
|
1577 #endif /* not APOLLO */
|
|
|
1578 )
|
|
|
1579 && p != nm
|
|
|
1580 && (0
|
|
|
1581 #ifdef VMS
|
|
|
1582 || p[-1] == ':' || p[-1] == ']' || p[-1] == '>'
|
|
|
1583 #endif /* VMS */
|
|
|
1584 || IS_DIRECTORY_SEP (p[-1])))
|
|
|
1585 {
|
|
|
1586 nm = p;
|
|
|
1587 substituted = 1;
|
|
|
1588 }
|
|
|
1589 #ifdef DOS_NT
|
|
|
1590 if (p[0] && p[1] == ':')
|
|
|
1591 {
|
|
|
1592 nm = p;
|
|
|
1593 substituted = 1;
|
|
|
1594 }
|
|
|
1595 #endif /* DOS_NT */
|
|
|
1596 }
|
|
|
1597
|
|
|
1598 #ifdef VMS
|
|
|
1599 return build_string (nm);
|
|
|
1600 #else
|
|
|
1601
|
|
|
1602 /* See if any variables are substituted into the string
|
|
|
1603 and find the total length of their values in `total' */
|
|
|
1604
|
|
|
1605 for (p = nm; p != endp;)
|
|
|
1606 if (*p != '$')
|
|
|
1607 p++;
|
|
|
1608 else
|
|
|
1609 {
|
|
|
1610 p++;
|
|
|
1611 if (p == endp)
|
|
|
1612 goto badsubst;
|
|
|
1613 else if (*p == '$')
|
|
|
1614 {
|
|
|
1615 /* "$$" means a single "$" */
|
|
|
1616 p++;
|
|
|
1617 total -= 1;
|
|
|
1618 substituted = 1;
|
|
|
1619 continue;
|
|
|
1620 }
|
|
|
1621 else if (*p == '{')
|
|
|
1622 {
|
|
|
1623 o = ++p;
|
|
|
1624 while (p != endp && *p != '}') p++;
|
|
|
1625 if (*p != '}') goto missingclose;
|
|
|
1626 s = p;
|
|
|
1627 }
|
|
|
1628 else
|
|
|
1629 {
|
|
|
1630 o = p;
|
|
|
1631 while (p != endp && (isalnum (*p) || *p == '_')) p++;
|
|
|
1632 s = p;
|
|
|
1633 }
|
|
|
1634
|
|
|
1635 /* Copy out the variable name */
|
|
|
1636 target = (Bufbyte *) alloca (s - o + 1);
|
|
|
1637 strncpy ((char *) target, (char *) o, s - o);
|
|
|
1638 target[s - o] = 0;
|
|
|
1639 #ifdef DOS_NT
|
|
|
1640 strupr (target); /* $home == $HOME etc. */
|
|
|
1641 #endif /* DOS_NT */
|
|
|
1642
|
|
|
1643 /* Get variable value */
|
|
|
1644 o = (Bufbyte *) egetenv ((char *) target);
|
|
|
1645 if (!o) goto badvar;
|
|
|
1646 total += strlen ((char *) o);
|
|
|
1647 substituted = 1;
|
|
|
1648 }
|
|
|
1649
|
|
|
1650 if (!substituted)
|
|
|
1651 return string;
|
|
|
1652
|
|
|
1653 /* If substitution required, recopy the string and do it */
|
|
|
1654 /* Make space in stack frame for the new copy */
|
|
|
1655 xnm = (Bufbyte *) alloca (string_length (XSTRING (string)) + total + 1);
|
|
|
1656 x = xnm;
|
|
|
1657
|
|
|
1658 /* Copy the rest of the name through, replacing $ constructs with values */
|
|
|
1659 for (p = nm; *p;)
|
|
|
1660 if (*p != '$')
|
|
|
1661 *x++ = *p++;
|
|
|
1662 else
|
|
|
1663 {
|
|
|
1664 p++;
|
|
|
1665 if (p == endp)
|
|
|
1666 goto badsubst;
|
|
|
1667 else if (*p == '$')
|
|
|
1668 {
|
|
|
1669 *x++ = *p++;
|
|
|
1670 continue;
|
|
|
1671 }
|
|
|
1672 else if (*p == '{')
|
|
|
1673 {
|
|
|
1674 o = ++p;
|
|
|
1675 while (p != endp && *p != '}') p++;
|
|
|
1676 if (*p != '}') goto missingclose;
|
|
|
1677 s = p++;
|
|
|
1678 }
|
|
|
1679 else
|
|
|
1680 {
|
|
|
1681 o = p;
|
|
|
1682 while (p != endp && (isalnum (*p) || *p == '_')) p++;
|
|
|
1683 s = p;
|
|
|
1684 }
|
|
|
1685
|
|
|
1686 /* Copy out the variable name */
|
|
|
1687 target = (Bufbyte *) alloca (s - o + 1);
|
|
|
1688 strncpy ((char *) target, (char *) o, s - o);
|
|
|
1689 target[s - o] = 0;
|
|
|
1690 #ifdef DOS_NT
|
|
|
1691 strupr (target); /* $home == $HOME etc. */
|
|
|
1692 #endif /* DOS_NT */
|
|
|
1693
|
|
|
1694 /* Get variable value */
|
|
|
1695 o = (Bufbyte *) egetenv ((char *) target);
|
|
|
1696 if (!o)
|
|
|
1697 goto badvar;
|
|
|
1698
|
|
|
1699 strcpy ((char *) x, (char *) o);
|
|
|
1700 x += strlen ((char *) o);
|
|
|
1701 }
|
|
|
1702
|
|
|
1703 *x = 0;
|
|
|
1704
|
|
|
1705 /* If /~ or // appears, discard everything through first slash. */
|
|
|
1706
|
|
|
1707 for (p = xnm; p != x; p++)
|
|
|
1708 if ((p[0] == '~'
|
|
|
1709 #ifdef APOLLO
|
|
|
1710 /* // at start of file name is meaningful in Apollo system */
|
|
|
1711 || (p[0] == '/' && p - 1 != xnm)
|
|
|
1712 #else /* not APOLLO */
|
|
|
1713 #ifdef WINDOWSNT
|
|
|
1714 || (IS_DIRECTORY_SEP (p[0]) && p - 1 != xnm)
|
|
|
1715 #else /* not WINDOWSNT */
|
|
|
1716 || p[0] == '/'
|
|
|
1717 #endif /* not WINDOWSNT */
|
|
|
1718 #endif /* not APOLLO */
|
|
|
1719 )
|
|
|
1720 /* don't do p[-1] if that would go off the beginning --jwz */
|
|
|
1721 && p != nm && p > xnm && IS_DIRECTORY_SEP (p[-1]))
|
|
|
1722 xnm = p;
|
|
|
1723 #ifdef DOS_NT
|
|
|
1724 else if (p[0] && p[1] == ':')
|
|
|
1725 xnm = p;
|
|
|
1726 #endif
|
|
|
1727
|
|
|
1728 return make_string (xnm, x - xnm);
|
|
|
1729
|
|
|
1730 badsubst:
|
|
|
1731 error ("Bad format environment-variable substitution");
|
|
|
1732 missingclose:
|
|
|
1733 error ("Missing \"}\" in environment-variable substitution");
|
|
|
1734 badvar:
|
|
|
1735 error ("Substituting nonexistent environment variable \"%s\"",
|
|
|
1736 target);
|
|
|
1737
|
|
|
1738 /* NOTREACHED */
|
|
|
1739 return Qnil; /* suppress compiler warning */
|
|
|
1740 #endif /* not VMS */
|
|
|
1741 }
|
|
|
1742
|
|
|
1743 /* (directory-file-name (expand-file-name FOO)) */
|
|
|
1744
|
|
|
1745 Lisp_Object
|
|
|
1746 expand_and_dir_to_file (Lisp_Object filename, Lisp_Object defdir)
|
|
|
1747 {
|
|
|
1748 /* This function can GC */
|
|
|
1749 Lisp_Object abspath;
|
|
|
1750 struct gcpro gcpro1;
|
|
|
1751
|
|
|
1752 GCPRO1 (filename);
|
|
|
1753 abspath = Fexpand_file_name (filename, defdir);
|
|
|
1754 #ifdef VMS
|
|
|
1755 {
|
|
|
1756 Bufbyte c =
|
|
|
1757 string_byte (XSTRING (abspath), string_length (XSTRING (abspath)) - 1);
|
|
|
1758 if (c == ':' || c == ']' || c == '>')
|
|
|
1759 abspath = Fdirectory_file_name (abspath);
|
|
|
1760 }
|
|
|
1761 #else
|
|
|
1762 /* Remove final slash, if any (unless path is root).
|
|
|
1763 stat behaves differently depending! */
|
|
|
1764 if (string_length (XSTRING (abspath)) > 1
|
|
|
1765 && IS_DIRECTORY_SEP (string_byte (XSTRING (abspath),
|
|
|
1766 string_length (XSTRING (abspath)) - 1))
|
|
|
1767 && !IS_DEVICE_SEP (string_byte (XSTRING (abspath),
|
|
|
1768 string_length (XSTRING (abspath)) - 2)))
|
|
|
1769 /* We cannot take shortcuts; they might be wrong for magic file names. */
|
|
|
1770 abspath = Fdirectory_file_name (abspath);
|
|
|
1771 #endif
|
|
|
1772 UNGCPRO;
|
|
|
1773 return abspath;
|
|
|
1774 }
|
|
|
1775
|
|
|
1776 /* Signal an error if the file ABSNAME already exists.
|
|
|
1777 If INTERACTIVE is nonzero, ask the user whether to proceed,
|
|
|
1778 and bypass the error if the user says to go ahead.
|
|
|
1779 QUERYSTRING is a name for the action that is being considered
|
|
|
1780 to alter the file.
|
|
|
1781 *STATPTR is used to store the stat information if the file exists.
|
|
|
1782 If the file does not exist, STATPTR->st_mode is set to 0. */
|
|
|
1783
|
|
|
1784 static void
|
|
|
1785 barf_or_query_if_file_exists (Lisp_Object absname, CONST char *querystring,
|
|
|
1786 int interactive, struct stat *statptr)
|
|
|
1787 {
|
|
|
1788 struct stat statbuf;
|
|
|
1789
|
|
|
1790 /* stat is a good way to tell whether the file exists,
|
|
|
1791 regardless of what access permissions it has. */
|
|
|
1792 if (stat ((char *) string_data (XSTRING (absname)), &statbuf) >= 0)
|
|
|
1793 {
|
|
|
1794 Lisp_Object tem;
|
|
|
1795 struct gcpro gcpro1;
|
|
|
1796
|
|
|
1797 GCPRO1 (absname);
|
|
|
1798 if (interactive)
|
|
|
1799 tem = call1
|
|
|
1800 (Qyes_or_no_p,
|
|
|
1801 (emacs_doprnt_string_c
|
|
|
1802 ((CONST Bufbyte *) GETTEXT ("File %s already exists; %s anyway? "),
|
|
|
1803 Qnil, -1, string_data (XSTRING (absname)),
|
|
|
1804 GETTEXT (querystring))));
|
|
|
1805 else
|
|
|
1806 tem = Qnil;
|
|
|
1807 UNGCPRO;
|
|
|
1808 if (NILP (tem))
|
|
|
1809 Fsignal (Qfile_already_exists,
|
|
|
1810 list2 (build_translated_string ("File already exists"),
|
|
|
1811 absname));
|
|
|
1812 if (statptr)
|
|
|
1813 *statptr = statbuf;
|
|
|
1814 }
|
|
|
1815 else
|
|
|
1816 {
|
|
|
1817 if (statptr)
|
|
|
1818 statptr->st_mode = 0;
|
|
|
1819 }
|
|
|
1820 return;
|
|
|
1821 }
|
|
|
1822
|
|
|
1823 DEFUN ("copy-file", Fcopy_file, Scopy_file, 2, 4,
|
|
|
1824 "fCopy file: \nFCopy %s to file: \np\nP" /*
|
|
|
1825 Copy FILE to NEWNAME. Both args must be strings.
|
|
|
1826 Signals a `file-already-exists' error if file NEWNAME already exists,
|
|
|
1827 unless a third argument OK-IF-ALREADY-EXISTS is supplied and non-nil.
|
|
|
1828 A number as third arg means request confirmation if NEWNAME already exists.
|
|
|
1829 This is what happens in interactive use with M-x.
|
|
|
1830 Fourth arg KEEP-TIME non-nil means give the new file the same
|
|
|
1831 last-modified time as the old one. (This works on only some systems.)
|
|
|
1832 A prefix arg makes KEEP-TIME non-nil.
|
|
|
1833 */ )
|
|
|
1834 (filename, newname, ok_if_already_exists, keep_date)
|
|
|
1835 Lisp_Object filename, newname, ok_if_already_exists, keep_date;
|
|
|
1836 {
|
|
|
1837 /* This function can GC */
|
|
|
1838 int ifd, ofd, n;
|
|
|
1839 char buf[16 * 1024];
|
|
|
1840 struct stat st, out_st;
|
|
|
1841 Lisp_Object handler;
|
|
|
1842 int speccount = specpdl_depth ();
|
|
|
1843 struct gcpro gcpro1, gcpro2;
|
|
|
1844 /* Lisp_Object args[6]; */
|
|
|
1845 int input_file_statable_p;
|
|
|
1846
|
|
|
1847 GCPRO2 (filename, newname);
|
|
|
1848 CHECK_STRING (filename);
|
|
|
1849 CHECK_STRING (newname);
|
|
|
1850 filename = Fexpand_file_name (filename, Qnil);
|
|
|
1851 newname = Fexpand_file_name (newname, Qnil);
|
|
|
1852
|
|
|
1853 /* If the input file name has special constructs in it,
|
|
|
1854 call the corresponding file handler. */
|
|
|
1855 handler = Ffind_file_name_handler (filename, Qcopy_file);
|
|
|
1856 /* Likewise for output file name. */
|
|
|
1857 if (NILP (handler))
|
|
|
1858 handler = Ffind_file_name_handler (newname, Qcopy_file);
|
|
|
1859 if (!NILP (handler))
|
|
|
1860 {
|
|
|
1861 UNGCPRO;
|
|
|
1862 return call5 (handler, Qcopy_file, filename, newname,
|
|
|
1863 ok_if_already_exists, keep_date);
|
|
|
1864 }
|
|
|
1865
|
|
|
1866 /* When second argument is a directory, copy the file into it.
|
|
|
1867 (copy-file "foo" "bar/") == (copy-file "foo" "bar/foo")
|
|
|
1868 */
|
|
|
1869 if (!NILP (Ffile_directory_p (newname)))
|
|
|
1870 {
|
|
|
1871 Lisp_Object args[3];
|
|
|
1872 struct gcpro ngcpro1;
|
|
|
1873 int i = 1;
|
|
|
1874
|
|
|
1875 args[0] = newname;
|
|
|
1876 args[1] = Qnil; args[2] = Qnil;
|
|
|
1877 NGCPRO1 (*args);
|
|
|
1878 ngcpro1.nvars = 3;
|
|
|
1879 if (string_byte (XSTRING (newname),
|
|
|
1880 string_length (XSTRING (newname)) - 1) != '/')
|
|
|
1881 args[i++] = build_string ("/");
|
|
|
1882 args[i++] = Ffile_name_nondirectory (filename);
|
|
|
1883 newname = Fconcat (i, args);
|
|
|
1884 NUNGCPRO;
|
|
|
1885 }
|
|
|
1886
|
|
|
1887 if (NILP (ok_if_already_exists)
|
|
|
1888 || INTP (ok_if_already_exists))
|
|
|
1889 barf_or_query_if_file_exists (newname, "copy to it",
|
|
|
1890 INTP (ok_if_already_exists), &out_st);
|
|
|
1891 else if (stat ((CONST char *) string_data (XSTRING (newname)), &out_st) < 0)
|
|
|
1892 out_st.st_mode = 0;
|
|
|
1893
|
|
|
1894 ifd = open ((char *) string_data (XSTRING (filename)), O_RDONLY, 0);
|
|
|
1895 if (ifd < 0)
|
|
|
1896 report_file_error ("Opening input file", Fcons (filename, Qnil));
|
|
|
1897
|
|
|
1898 record_unwind_protect (close_file_unwind, make_int (ifd));
|
|
|
1899
|
|
|
1900 /* We can only copy regular files and symbolic links. Other files are not
|
|
|
1901 copyable by us. */
|
|
|
1902 input_file_statable_p = (fstat (ifd, &st) >= 0);
|
|
|
1903
|
|
|
1904 #ifndef DOS_NT
|
|
|
1905 if (out_st.st_mode != 0
|
|
|
1906 && st.st_dev == out_st.st_dev && st.st_ino == out_st.st_ino)
|
|
|
1907 {
|
|
|
1908 errno = 0;
|
|
|
1909 report_file_error ("Input and output files are the same",
|
|
|
1910 Fcons (filename, Fcons (newname, Qnil)));
|
|
|
1911 }
|
|
|
1912 #endif
|
|
|
1913
|
|
|
1914 #if defined (S_ISREG) && defined (S_ISLNK)
|
|
|
1915 if (input_file_statable_p)
|
|
|
1916 {
|
|
|
1917 if (!(S_ISREG (st.st_mode))
|
|
|
1918 /* XEmacs: have to allow S_ISCHR in order to copy /dev/null */
|
|
|
1919 #ifdef S_ISCHR
|
|
|
1920 && !(S_ISCHR (st.st_mode))
|
|
|
1921 #endif
|
|
|
1922 && !(S_ISLNK (st.st_mode)))
|
|
|
1923 {
|
|
|
1924 #if defined (EISDIR)
|
|
|
1925 /* Get a better looking error message. */
|
|
|
1926 errno = EISDIR;
|
|
|
1927 #endif /* EISDIR */
|
|
|
1928 report_file_error ("Non-regular file", Fcons (filename, Qnil));
|
|
|
1929 }
|
|
|
1930 }
|
|
|
1931 #endif /* S_ISREG && S_ISLNK */
|
|
|
1932
|
|
|
1933 #ifdef VMS
|
|
|
1934 /* Create the copy file with the same record format as the input file */
|
|
|
1935 ofd = sys_creat ((char *) string_data (XSTRING (newname)), 0666, ifd);
|
|
|
1936 #else
|
|
|
1937 #ifdef MSDOS
|
|
|
1938 /* System's default file type was set to binary by _fmode in emacs.c. */
|
|
|
1939 ofd = creat ((char *) string_data (XSTRING (newname)), S_IREAD | S_IWRITE);
|
|
|
1940 #else /* not MSDOS */
|
|
|
1941 ofd = creat ((char *) string_data (XSTRING (newname)), 0666);
|
|
|
1942 #endif /* not MSDOS */
|
|
|
1943 #endif /* VMS */
|
|
|
1944 if (ofd < 0)
|
|
|
1945 report_file_error ("Opening output file", list1 (newname));
|
|
|
1946
|
|
|
1947 {
|
|
|
1948 Lisp_Object ofd_locative = noseeum_cons (make_int (ofd), Qnil);
|
|
|
1949
|
|
|
1950 record_unwind_protect (close_file_unwind, ofd_locative);
|
|
|
1951
|
|
|
1952 while ((n = read_allowing_quit (ifd, buf, sizeof (buf))) > 0)
|
|
|
1953 {
|
|
|
1954 if (write_allowing_quit (ofd, buf, n) != n)
|
|
|
1955 report_file_error ("I/O error", list1 (newname));
|
|
|
1956 }
|
|
|
1957
|
|
|
1958 /* Closing the output clobbers the file times on some systems. */
|
|
|
1959 if (close (ofd) < 0)
|
|
|
1960 report_file_error ("I/O error", Fcons (newname, Qnil));
|
|
|
1961
|
|
|
1962 if (input_file_statable_p)
|
|
|
1963 {
|
|
|
1964 if (!NILP (keep_date))
|
|
|
1965 {
|
|
|
1966 EMACS_TIME atime, mtime;
|
|
|
1967 EMACS_SET_SECS_USECS (atime, st.st_atime, 0);
|
|
|
1968 EMACS_SET_SECS_USECS (mtime, st.st_mtime, 0);
|
|
|
1969 if (set_file_times ((char *) string_data (XSTRING (newname)), atime,
|
|
|
1970 mtime))
|
|
|
1971 report_file_error ("I/O error", Fcons (newname, Qnil));
|
|
|
1972 }
|
|
|
1973 #ifndef MSDOS
|
|
|
1974 chmod ((CONST char *) string_data (XSTRING (newname)),
|
|
|
1975 st.st_mode & 07777);
|
|
|
1976 #else /* MSDOS */
|
|
|
1977 #if defined (__DJGPP__) && __DJGPP__ > 1
|
|
|
1978 /* In DJGPP v2.0 and later, fstat usually returns true file mode bits,
|
|
|
1979 and if it can't, it tells so. Otherwise, under MSDOS we usually
|
|
|
1980 get only the READ bit, which will make the copied file read-only,
|
|
|
1981 so it's better not to chmod at all. */
|
|
|
1982 if ((_djstat_flags & _STFAIL_WRITEBIT) == 0)
|
|
|
1983 chmod ((char *) string_data (XSTRING (newname)), st.st_mode & 07777);
|
|
|
1984 #endif /* DJGPP version 2 or newer */
|
|
|
1985 #endif /* MSDOS */
|
|
|
1986 }
|
|
|
1987
|
|
|
1988 /* We'll close it by hand */
|
|
|
1989 XCAR (ofd_locative) = Qnil;
|
|
|
1990
|
|
|
1991 /* Close ifd */
|
|
|
1992 unbind_to (speccount, Qnil);
|
|
|
1993 }
|
|
|
1994
|
|
|
1995 UNGCPRO;
|
|
|
1996 return Qnil;
|
|
|
1997 }
|
|
|
1998
|
|
|
1999 DEFUN ("make-directory-internal", Fmake_directory_internal,
|
|
|
2000 Smake_directory_internal, 1, 1, 0 /*
|
|
|
2001 Create a directory. One argument, a file name string.
|
|
|
2002 */ )
|
|
|
2003 (dirname)
|
|
|
2004 Lisp_Object dirname;
|
|
|
2005 {
|
|
|
2006 /* This function can GC */
|
|
|
2007 char dir [MAXPATHLEN];
|
|
|
2008 Lisp_Object handler;
|
|
|
2009
|
|
|
2010 struct gcpro gcpro1;
|
|
|
2011
|
|
|
2012 GCPRO1 (dirname);
|
|
|
2013 CHECK_STRING (dirname);
|
|
|
2014 dirname = Fexpand_file_name (dirname, Qnil);
|
|
|
2015
|
|
|
2016 handler = Ffind_file_name_handler (dirname, Qmake_directory_internal);
|
|
|
2017 UNGCPRO;
|
|
|
2018 if (!NILP (handler))
|
|
|
2019 return (call2 (handler, Qmake_directory_internal,
|
|
|
2020 dirname));
|
|
|
2021
|
|
|
2022 if (string_length (XSTRING (dirname)) > (sizeof (dir) - 1))
|
|
|
2023 {
|
|
|
2024 return Fsignal (Qfile_error,
|
|
|
2025 list3 (build_translated_string ("Creating directory"),
|
|
|
2026 build_translated_string ("pathame too long"),
|
|
|
2027 dirname));
|
|
|
2028 }
|
|
|
2029 strncpy (dir, (char *) string_data (XSTRING (dirname)),
|
|
|
2030 string_length (XSTRING (dirname)) + 1);
|
|
|
2031
|
|
|
2032 #ifndef VMS
|
|
|
2033 if (dir [string_length (XSTRING (dirname)) - 1] == '/')
|
|
|
2034 dir [string_length (XSTRING (dirname)) - 1] = 0;
|
|
|
2035 #endif
|
|
|
2036
|
|
|
2037 #ifdef WINDOWSNT
|
|
|
2038 if (mkdir (dir) != 0)
|
|
|
2039 #else
|
|
|
2040 if (mkdir (dir, 0777) != 0)
|
|
|
2041 #endif
|
|
|
2042 report_file_error ("Creating directory", list1 (dirname));
|
|
|
2043
|
|
|
2044 return Qnil;
|
|
|
2045 }
|
|
|
2046
|
|
|
2047 DEFUN ("delete-directory", Fdelete_directory, Sdelete_directory, 1, 1,
|
|
|
2048 "FDelete directory: " /*
|
|
|
2049 Delete a directory. One argument, a file name or directory name string.
|
|
|
2050 */ )
|
|
|
2051 (dirname)
|
|
|
2052 Lisp_Object dirname;
|
|
|
2053 {
|
|
|
2054 /* This function can GC */
|
|
|
2055 Lisp_Object handler;
|
|
|
2056 struct gcpro gcpro1;
|
|
|
2057
|
|
|
2058 GCPRO1 (dirname);
|
|
|
2059 CHECK_STRING (dirname);
|
|
|
2060 dirname =
|
|
|
2061 Fdirectory_file_name (Fexpand_file_name (dirname, Qnil));
|
|
|
2062
|
|
|
2063 handler = Ffind_file_name_handler (dirname, Qdelete_directory);
|
|
|
2064 UNGCPRO;
|
|
|
2065 if (!NILP (handler))
|
|
|
2066 return (call2 (handler, Qdelete_directory, dirname));
|
|
|
2067
|
|
|
2068 if (rmdir ((char *) string_data (XSTRING (dirname))) != 0)
|
|
|
2069 report_file_error ("Removing directory", list1 (dirname));
|
|
|
2070
|
|
|
2071 return Qnil;
|
|
|
2072 }
|
|
|
2073
|
|
|
2074 DEFUN ("delete-file", Fdelete_file, Sdelete_file, 1, 1, "fDelete file: " /*
|
|
|
2075 Delete specified file. One argument, a file name string.
|
|
|
2076 If file has multiple names, it continues to exist with the other names.
|
|
|
2077 */ )
|
|
|
2078 (filename)
|
|
|
2079 Lisp_Object filename;
|
|
|
2080 {
|
|
|
2081 /* This function can GC */
|
|
|
2082 Lisp_Object handler;
|
|
|
2083 struct gcpro gcpro1;
|
|
|
2084
|
|
|
2085 GCPRO1 (filename);
|
|
|
2086 CHECK_STRING (filename);
|
|
|
2087 filename = Fexpand_file_name (filename, Qnil);
|
|
|
2088
|
|
|
2089 handler = Ffind_file_name_handler (filename, Qdelete_file);
|
|
|
2090 UNGCPRO;
|
|
|
2091 if (!NILP (handler))
|
|
|
2092 return call2 (handler, Qdelete_file, filename);
|
|
|
2093
|
|
|
2094 if (0 > unlink ((char *) string_data (XSTRING (filename))))
|
|
|
2095 report_file_error ("Removing old name", list1 (filename));
|
|
|
2096 return Qnil;
|
|
|
2097 }
|
|
|
2098
|
|
|
2099 static Lisp_Object
|
|
|
2100 internal_delete_file_1 (Lisp_Object ignore, Lisp_Object ignore2)
|
|
|
2101 {
|
|
|
2102 return Qt;
|
|
|
2103 }
|
|
|
2104
|
|
|
2105 /* Delete file FILENAME, returning 1 if successful and 0 if failed. */
|
|
|
2106
|
|
|
2107 int
|
|
|
2108 internal_delete_file (Lisp_Object filename)
|
|
|
2109 {
|
|
|
2110 return NILP (condition_case_1 (Qt, Fdelete_file, filename,
|
|
|
2111 internal_delete_file_1, Qnil));
|
|
|
2112 }
|
|
|
2113
|
|
|
2114 DEFUN ("rename-file", Frename_file, Srename_file, 2, 3,
|
|
|
2115 "fRename file: \nFRename %s to file: \np" /*
|
|
|
2116 Rename FILE as NEWNAME. Both args strings.
|
|
|
2117 If file has names other than FILE, it continues to have those names.
|
|
|
2118 Signals a `file-already-exists' error if a file NEWNAME already exists
|
|
|
2119 unless optional third argument OK-IF-ALREADY-EXISTS is non-nil.
|
|
|
2120 A number as third arg means request confirmation if NEWNAME already exists.
|
|
|
2121 This is what happens in interactive use with M-x.
|
|
|
2122 */ )
|
|
|
2123 (filename, newname, ok_if_already_exists)
|
|
|
2124 Lisp_Object filename, newname, ok_if_already_exists;
|
|
|
2125 {
|
|
|
2126 /* This function can GC */
|
|
|
2127 Lisp_Object handler;
|
|
|
2128 struct gcpro gcpro1, gcpro2;
|
|
|
2129
|
|
|
2130 GCPRO2 (filename, newname);
|
|
|
2131 CHECK_STRING (filename);
|
|
|
2132 CHECK_STRING (newname);
|
|
|
2133 filename = Fexpand_file_name (filename, Qnil);
|
|
|
2134 newname = Fexpand_file_name (newname, Qnil);
|
|
|
2135
|
|
|
2136 /* If the file name has special constructs in it,
|
|
|
2137 call the corresponding file handler. */
|
|
|
2138 handler = Ffind_file_name_handler (filename, Qrename_file);
|
|
|
2139 if (NILP (handler))
|
|
|
2140 handler = Ffind_file_name_handler (newname, Qrename_file);
|
|
|
2141 if (!NILP (handler))
|
|
|
2142 {
|
|
|
2143 UNGCPRO;
|
|
|
2144 return call4 (handler, Qrename_file,
|
|
|
2145 filename, newname, ok_if_already_exists);
|
|
|
2146 }
|
|
|
2147
|
|
|
2148 /* When second argument is a directory, rename the file into it.
|
|
|
2149 (rename-file "foo" "bar/") == (rename-file "foo" "bar/foo")
|
|
|
2150 */
|
|
|
2151 if (!NILP (Ffile_directory_p (newname)))
|
|
|
2152 {
|
|
|
2153 Lisp_Object args[3];
|
|
|
2154 struct gcpro ngcpro1;
|
|
|
2155 int i = 1;
|
|
|
2156
|
|
|
2157 args[0] = newname;
|
|
|
2158 args[1] = Qnil; args[2] = Qnil;
|
|
|
2159 NGCPRO1 (*args);
|
|
|
2160 ngcpro1.nvars = 3;
|
|
|
2161 if (string_byte (XSTRING (newname),
|
|
|
2162 string_length (XSTRING (newname)) - 1) != '/')
|
|
|
2163 args[i++] = build_string ("/");
|
|
|
2164 args[i++] = Ffile_name_nondirectory (filename);
|
|
|
2165 newname = Fconcat (i, args);
|
|
|
2166 NUNGCPRO;
|
|
|
2167 }
|
|
|
2168
|
|
|
2169 if (NILP (ok_if_already_exists)
|
|
|
2170 || INTP (ok_if_already_exists))
|
|
|
2171 barf_or_query_if_file_exists (newname, "rename to it",
|
|
|
2172 INTP (ok_if_already_exists), 0);
|
|
|
2173
|
|
|
2174 #ifdef WINDOWSNT
|
|
|
2175 if (!MoveFile (XSTRING (filename)->data, XSTRING (newname)->data))
|
|
|
2176 #else /* not WINDOWSNT */
|
|
|
2177 /* FSFmacs only calls rename() here under BSD 4.1, and calls
|
|
|
2178 link() and unlink() otherwise, but that's bogus. Sometimes
|
|
|
2179 rename() succeeds where link()/unlink() fail, and we have
|
|
|
2180 configure check for rename() and emulate using link()/unlink()
|
|
|
2181 if necessary. */
|
|
|
2182 if (0 > rename ((char *) string_data (XSTRING (filename)),
|
|
|
2183 (char *) string_data (XSTRING (newname))))
|
|
|
2184 #endif /* not WINDOWSNT */
|
|
|
2185 {
|
|
|
2186 #ifdef WINDOWSNT
|
|
|
2187 /* Why two? And why doesn't MS document what MoveFile will return? */
|
|
|
2188 if (GetLastError () == ERROR_FILE_EXISTS
|
|
|
2189 || GetLastError () == ERROR_ALREADY_EXISTS)
|
|
|
2190 #else /* not WINDOWSNT */
|
|
|
2191 if (errno == EXDEV)
|
|
|
2192 #endif /* not WINDOWSNT */
|
|
|
2193 {
|
|
|
2194 Fcopy_file (filename, newname,
|
|
|
2195 /* We have already prompted if it was an integer,
|
|
|
2196 so don't have copy-file prompt again. */
|
|
|
2197 ((NILP (ok_if_already_exists)) ? Qnil : Qt),
|
|
|
2198 Qt);
|
|
|
2199 Fdelete_file (filename);
|
|
|
2200 }
|
|
|
2201 else
|
|
|
2202 {
|
|
|
2203 report_file_error ("Renaming", list2 (filename, newname));
|
|
|
2204 }
|
|
|
2205 }
|
|
|
2206 UNGCPRO;
|
|
|
2207 return Qnil;
|
|
|
2208 }
|
|
|
2209
|
|
|
2210 DEFUN ("add-name-to-file", Fadd_name_to_file, Sadd_name_to_file, 2, 3,
|
|
|
2211 "fAdd name to file: \nFName to add to %s: \np" /*
|
|
|
2212 Give FILE additional name NEWNAME. Both args strings.
|
|
|
2213 Signals a `file-already-exists' error if a file NEWNAME already exists
|
|
|
2214 unless optional third argument OK-IF-ALREADY-EXISTS is non-nil.
|
|
|
2215 A number as third arg means request confirmation if NEWNAME already exists.
|
|
|
2216 This is what happens in interactive use with M-x.
|
|
|
2217 */ )
|
|
|
2218 (filename, newname, ok_if_already_exists)
|
|
|
2219 Lisp_Object filename, newname, ok_if_already_exists;
|
|
|
2220 {
|
|
|
2221 /* This function can GC */
|
|
|
2222 Lisp_Object handler;
|
|
|
2223 struct gcpro gcpro1, gcpro2;
|
|
|
2224
|
|
|
2225 GCPRO2 (filename, newname);
|
|
|
2226 CHECK_STRING (filename);
|
|
|
2227 CHECK_STRING (newname);
|
|
|
2228 filename = Fexpand_file_name (filename, Qnil);
|
|
|
2229 newname = Fexpand_file_name (newname, Qnil);
|
|
|
2230
|
|
|
2231 /* If the file name has special constructs in it,
|
|
|
2232 call the corresponding file handler. */
|
|
|
2233 handler = Ffind_file_name_handler (filename, Qadd_name_to_file);
|
|
|
2234 if (!NILP (handler))
|
|
|
2235 RETURN_UNGCPRO (call4 (handler, Qadd_name_to_file, filename,
|
|
|
2236 newname, ok_if_already_exists));
|
|
|
2237
|
|
|
2238 /* If the new name has special constructs in it,
|
|
|
2239 call the corresponding file handler. */
|
|
|
2240 handler = Ffind_file_name_handler (newname, Qadd_name_to_file);
|
|
|
2241 if (!NILP (handler))
|
|
|
2242 RETURN_UNGCPRO (call4 (handler, Qadd_name_to_file, filename,
|
|
|
2243 newname, ok_if_already_exists));
|
|
|
2244
|
|
|
2245 if (NILP (ok_if_already_exists)
|
|
|
2246 || INTP (ok_if_already_exists))
|
|
|
2247 barf_or_query_if_file_exists (newname, "make it a new name",
|
|
|
2248 INTP (ok_if_already_exists), 0);
|
|
|
2249 #ifdef WINDOWSNT
|
|
|
2250 /* Windows does not support this operation. */
|
|
|
2251 report_file_error ("Adding new name", Flist (2, &filename));
|
|
|
2252 #else /* not WINDOWSNT */
|
|
|
2253
|
|
|
2254 unlink ((char *) string_data (XSTRING (newname)));
|
|
|
2255 if (0 > link ((char *) string_data (XSTRING (filename)),
|
|
|
2256 (char *) string_data (XSTRING (newname))))
|
|
|
2257 {
|
|
|
2258 report_file_error ("Adding new name",
|
|
|
2259 list2 (filename, newname));
|
|
|
2260 }
|
|
|
2261 #endif /* not WINDOWSNT */
|
|
|
2262
|
|
|
2263 UNGCPRO;
|
|
|
2264 return Qnil;
|
|
|
2265 }
|
|
|
2266
|
|
|
2267 #ifdef S_IFLNK
|
|
|
2268 DEFUN ("make-symbolic-link", Fmake_symbolic_link, Smake_symbolic_link, 2, 3,
|
|
|
2269 "FMake symbolic link to file: \nFMake symbolic link to file %s: \np" /*
|
|
|
2270 Make a symbolic link to FILENAME, named LINKNAME. Both args strings.
|
|
|
2271 Signals a `file-already-exists' error if a file LINKNAME already exists
|
|
|
2272 unless optional third argument OK-IF-ALREADY-EXISTS is non-nil.
|
|
|
2273 A number as third arg means request confirmation if LINKNAME already exists.
|
|
|
2274 This happens for interactive use with M-x.
|
|
|
2275 */ )
|
|
|
2276 (filename, linkname, ok_if_already_exists)
|
|
|
2277 Lisp_Object filename, linkname, ok_if_already_exists;
|
|
|
2278 {
|
|
|
2279 /* This function can GC */
|
|
|
2280 Lisp_Object handler;
|
|
|
2281 struct gcpro gcpro1, gcpro2;
|
|
|
2282
|
|
|
2283 GCPRO2 (filename, linkname);
|
|
|
2284 CHECK_STRING (filename);
|
|
|
2285 CHECK_STRING (linkname);
|
|
|
2286 /* If the link target has a ~, we must expand it to get
|
|
|
2287 a truly valid file name. Otherwise, do not expand;
|
|
|
2288 we want to permit links to relative file names. */
|
|
|
2289 if (string_byte (XSTRING (filename), 0) == '~') /* #### Un*x-specific */
|
|
|
2290 filename = Fexpand_file_name (filename, Qnil);
|
|
|
2291 linkname = Fexpand_file_name (linkname, Qnil);
|
|
|
2292
|
|
|
2293 /* If the file name has special constructs in it,
|
|
|
2294 call the corresponding file handler. */
|
|
|
2295 handler = Ffind_file_name_handler (filename, Qmake_symbolic_link);
|
|
|
2296 if (!NILP (handler))
|
|
|
2297 RETURN_UNGCPRO (call4 (handler, Qmake_symbolic_link, filename, linkname,
|
|
|
2298 ok_if_already_exists));
|
|
|
2299
|
|
|
2300 /* If the new link name has special constructs in it,
|
|
|
2301 call the corresponding file handler. */
|
|
|
2302 handler = Ffind_file_name_handler (linkname, Qmake_symbolic_link);
|
|
|
2303 if (!NILP (handler))
|
|
|
2304 RETURN_UNGCPRO (call4 (handler, Qmake_symbolic_link, filename,
|
|
|
2305 linkname, ok_if_already_exists));
|
|
|
2306
|
|
|
2307 if (NILP (ok_if_already_exists)
|
|
|
2308 || INTP (ok_if_already_exists))
|
|
|
2309 barf_or_query_if_file_exists (linkname, "make it a link",
|
|
|
2310 INTP (ok_if_already_exists), 0);
|
|
|
2311
|
|
|
2312 unlink ((char *) string_data (XSTRING (linkname)));
|
|
|
2313 if (0 > symlink ((char *) string_data (XSTRING (filename)),
|
|
|
2314 (char *) string_data (XSTRING (linkname))))
|
|
|
2315 {
|
|
|
2316 report_file_error ("Making symbolic link",
|
|
|
2317 list2 (filename, linkname));
|
|
|
2318 }
|
|
|
2319 UNGCPRO;
|
|
|
2320 return Qnil;
|
|
|
2321 }
|
|
|
2322 #endif /* S_IFLNK */
|
|
|
2323
|
|
|
2324 #ifdef VMS
|
|
|
2325
|
|
|
2326 DEFUN ("define-logical-name", Fdefine_logical_name, Sdefine_logical_name,
|
|
|
2327 2, 2, "sDefine logical name: \nsDefine logical name %s as: " /*
|
|
|
2328 Define the job-wide logical name NAME to have the value STRING.
|
|
|
2329 If STRING is nil or a null string, the logical name NAME is deleted.
|
|
|
2330 */ )
|
|
|
2331 (varname, string)
|
|
|
2332 Lisp_Object varname;
|
|
|
2333 Lisp_Object string;
|
|
|
2334 {
|
|
|
2335 CHECK_STRING (varname);
|
|
|
2336 if (NILP (string))
|
|
|
2337 delete_logical_name ((char *) string_data (XSTRING (varname)));
|
|
|
2338 else
|
|
|
2339 {
|
|
|
2340 CHECK_STRING (string);
|
|
|
2341
|
|
|
2342 if (string_length (XSTRING (string)) == 0)
|
|
|
2343 delete_logical_name ((char *) string_data (XSTRING (varname)));
|
|
|
2344 else
|
|
|
2345 define_logical_name ((char *) string_data (XSTRING (varname)), (char *) string_data (XSTRING (string)));
|
|
|
2346 }
|
|
|
2347
|
|
|
2348 return string;
|
|
|
2349 }
|
|
|
2350 #endif /* VMS */
|
|
|
2351
|
|
|
2352 #ifdef HPUX_NET
|
|
|
2353
|
|
|
2354 DEFUN ("sysnetunam", Fsysnetunam, Ssysnetunam, 2, 2, 0 /*
|
|
|
2355 Open a network connection to PATH using LOGIN as the login string.
|
|
|
2356 */ )
|
|
|
2357 (path, login)
|
|
|
2358 Lisp_Object path, login;
|
|
|
2359 {
|
|
|
2360 int netresult;
|
|
|
2361
|
|
|
2362 CHECK_STRING (path);
|
|
|
2363 CHECK_STRING (login);
|
|
|
2364
|
|
|
2365 /* netunam, being a strange-o system call only used once, is not
|
|
|
2366 encapsulated. */
|
|
|
2367 {
|
|
|
2368 char *path_ext;
|
|
|
2369 char *login_ext;
|
|
|
2370
|
|
|
2371 GET_C_STRING_FILENAME_DATA_ALLOCA (path, path_ext);
|
|
|
2372 GET_C_STRING_EXT_DATA_ALLOCA (login, FORMAT_OS, login_ext);
|
|
|
2373
|
|
|
2374 netresult = netunam (path_ext, login_ext);
|
|
|
2375 }
|
|
|
2376
|
|
|
2377 if (netresult == -1)
|
|
|
2378 return Qnil;
|
|
|
2379 else
|
|
|
2380 return Qt;
|
|
|
2381 }
|
|
|
2382 #endif /* HPUX_NET */
|
|
|
2383
|
|
|
2384 DEFUN ("file-name-absolute-p", Ffile_name_absolute_p, Sfile_name_absolute_p,
|
|
|
2385 1, 1, 0 /*
|
|
|
2386 Return t if file FILENAME specifies an absolute path name.
|
|
|
2387 On Unix, this is a name starting with a `/' or a `~'.
|
|
|
2388 */ )
|
|
|
2389 (filename)
|
|
|
2390 Lisp_Object filename;
|
|
|
2391 {
|
|
|
2392 Bufbyte *ptr;
|
|
|
2393
|
|
|
2394 CHECK_STRING (filename);
|
|
|
2395 ptr = string_data (XSTRING (filename));
|
|
|
2396 if (IS_DIRECTORY_SEP (*ptr) || *ptr == '~'
|
|
|
2397 #ifdef VMS
|
|
|
2398 /* ??? This criterion is probably wrong for '<'. */
|
|
|
2399 || strchr (ptr, ':') || strchr (ptr, '<')
|
|
|
2400 || (*ptr == '[' && (ptr[1] != '-' || (ptr[2] != '.' && ptr[2] != ']'))
|
|
|
2401 && ptr[1] != '.')
|
|
|
2402 #endif /* VMS */
|
|
|
2403 #ifdef DOS_NT
|
|
|
2404 || (*ptr != 0 && ptr[1] == ':' && (ptr[2] == '/' || ptr[2] == '\\'))
|
|
|
2405 #endif
|
|
|
2406 )
|
|
|
2407 return Qt;
|
|
|
2408 else
|
|
|
2409 return Qnil;
|
|
|
2410 }
|
|
|
2411
|
|
|
2412 /* Return nonzero if file FILENAME exists and can be executed. */
|
|
|
2413
|
|
|
2414 static int
|
|
|
2415 check_executable (char *filename)
|
|
|
2416 {
|
|
|
2417 #ifdef DOS_NT
|
|
|
2418 int len = strlen (filename);
|
|
|
2419 char *suffix;
|
|
|
2420 struct stat st;
|
|
|
2421 if (stat (filename, &st) < 0)
|
|
|
2422 return 0;
|
|
|
2423 return (S_ISREG (st.st_mode)
|
|
|
2424 && len >= 5
|
|
|
2425 && (stricmp ((suffix = filename + len-4), ".com") == 0
|
|
|
2426 || stricmp (suffix, ".exe") == 0
|
|
|
2427 || stricmp (suffix, ".bat") == 0)
|
|
|
2428 || (st.st_mode & S_IFMT) == S_IFDIR);
|
|
|
2429 #else /* not DOS_NT */
|
|
|
2430 #ifdef HAVE_EACCESS
|
|
|
2431 return (eaccess (filename, 1) >= 0);
|
|
|
2432 #else
|
|
|
2433 /* Access isn't quite right because it uses the real uid
|
|
|
2434 and we really want to test with the effective uid.
|
|
|
2435 But Unix doesn't give us a right way to do it. */
|
|
|
2436 return (access (filename, 1) >= 0);
|
|
|
2437 #endif
|
|
|
2438 #endif /* not DOS_NT */
|
|
|
2439 }
|
|
|
2440
|
|
|
2441 /* Return nonzero if file FILENAME exists and can be written. */
|
|
|
2442
|
|
|
2443 static int
|
|
|
2444 check_writable (CONST char *filename)
|
|
|
2445 {
|
|
|
2446 #ifdef MSDOS
|
|
|
2447 struct stat st;
|
|
|
2448 if (stat (filename, &st) < 0)
|
|
|
2449 return 0;
|
|
|
2450 return (st.st_mode & S_IWRITE || (st.st_mode & S_IFMT) == S_IFDIR);
|
|
|
2451 #else /* not MSDOS */
|
|
|
2452 #ifdef HAVE_EACCESS
|
|
|
2453 return (eaccess (filename, 2) >= 0);
|
|
|
2454 #else
|
|
|
2455 /* Access isn't quite right because it uses the real uid
|
|
|
2456 and we really want to test with the effective uid.
|
|
|
2457 But Unix doesn't give us a right way to do it.
|
|
|
2458 Opening with O_WRONLY could work for an ordinary file,
|
|
|
2459 but would lose for directories. */
|
|
|
2460 return (access (filename, 2) >= 0);
|
|
|
2461 #endif
|
|
|
2462 #endif /* not MSDOS */
|
|
|
2463 }
|
|
|
2464
|
|
|
2465 DEFUN ("file-exists-p", Ffile_exists_p, Sfile_exists_p, 1, 1, 0 /*
|
|
|
2466 Return t if file FILENAME exists. (This does not mean you can read it.)
|
|
|
2467 See also `file-readable-p' and `file-attributes'.
|
|
|
2468 */ )
|
|
|
2469 (filename)
|
|
|
2470 Lisp_Object filename;
|
|
|
2471 {
|
|
|
2472 /* This function can GC */
|
|
|
2473 Lisp_Object abspath;
|
|
|
2474 Lisp_Object handler;
|
|
|
2475 struct stat statbuf;
|
|
|
2476 struct gcpro gcpro1;
|
|
|
2477
|
|
|
2478 GCPRO1 (filename);
|
|
|
2479 CHECK_STRING (filename);
|
|
|
2480 abspath = Fexpand_file_name (filename, Qnil);
|
|
|
2481 UNGCPRO;
|
|
|
2482
|
|
|
2483 /* If the file name has special constructs in it,
|
|
|
2484 call the corresponding file handler. */
|
|
|
2485 GCPRO1 (abspath);
|
|
|
2486 handler = Ffind_file_name_handler (abspath, Qfile_exists_p);
|
|
|
2487 UNGCPRO;
|
|
|
2488 if (!NILP (handler))
|
|
|
2489 return call2 (handler, Qfile_exists_p, abspath);
|
|
|
2490
|
|
|
2491 if (stat ((char *) string_data (XSTRING (abspath)), &statbuf) >= 0)
|
|
|
2492 return (Qt);
|
|
|
2493 else
|
|
|
2494 return (Qnil);
|
|
|
2495 }
|
|
|
2496
|
|
|
2497 DEFUN ("file-executable-p", Ffile_executable_p, Sfile_executable_p, 1, 1, 0 /*
|
|
|
2498 Return t if FILENAME can be executed by you.
|
|
|
2499 For a directory, this means you can access files in that directory.
|
|
|
2500 */ )
|
|
|
2501 (filename)
|
|
|
2502 Lisp_Object filename;
|
|
|
2503
|
|
|
2504 {
|
|
|
2505 /* This function can GC */
|
|
|
2506 Lisp_Object abspath;
|
|
|
2507 Lisp_Object handler;
|
|
|
2508 struct gcpro gcpro1;
|
|
|
2509
|
|
|
2510 GCPRO1 (filename);
|
|
|
2511 CHECK_STRING (filename);
|
|
|
2512 abspath = Fexpand_file_name (filename, Qnil);
|
|
|
2513 UNGCPRO;
|
|
|
2514
|
|
|
2515 /* If the file name has special constructs in it,
|
|
|
2516 call the corresponding file handler. */
|
|
|
2517 GCPRO1 (abspath);
|
|
|
2518 handler = Ffind_file_name_handler (abspath, Qfile_executable_p);
|
|
|
2519 UNGCPRO;
|
|
|
2520 if (!NILP (handler))
|
|
|
2521 return call2 (handler, Qfile_executable_p, abspath);
|
|
|
2522
|
|
|
2523 return (check_executable ((char *) string_data (XSTRING (abspath)))
|
|
|
2524 ? Qt : Qnil);
|
|
|
2525 }
|
|
|
2526
|
|
|
2527 DEFUN ("file-readable-p", Ffile_readable_p, Sfile_readable_p, 1, 1, 0 /*
|
|
|
2528 Return t if file FILENAME exists and you can read it.
|
|
|
2529 See also `file-exists-p' and `file-attributes'.
|
|
|
2530 */ )
|
|
|
2531 (filename)
|
|
|
2532 Lisp_Object filename;
|
|
|
2533 {
|
|
|
2534 /* This function can GC */
|
|
|
2535 Lisp_Object abspath;
|
|
|
2536 Lisp_Object handler;
|
|
|
2537 int desc;
|
|
|
2538 struct gcpro gcpro1;
|
|
|
2539
|
|
|
2540 GCPRO1 (filename);
|
|
|
2541 CHECK_STRING (filename);
|
|
|
2542 abspath = Fexpand_file_name (filename, Qnil);
|
|
|
2543 UNGCPRO;
|
|
|
2544
|
|
|
2545 /* If the file name has special constructs in it,
|
|
|
2546 call the corresponding file handler. */
|
|
|
2547 GCPRO1 (abspath);
|
|
|
2548 handler = Ffind_file_name_handler (abspath, Qfile_readable_p);
|
|
|
2549 UNGCPRO;
|
|
|
2550 if (!NILP (handler))
|
|
|
2551 return call2 (handler, Qfile_readable_p, abspath);
|
|
|
2552
|
|
|
2553 desc = open ((char *) string_data (XSTRING (abspath)), O_RDONLY, 0);
|
|
|
2554 if (desc < 0)
|
|
|
2555 return Qnil;
|
|
|
2556 close (desc);
|
|
|
2557 return Qt;
|
|
|
2558 }
|
|
|
2559
|
|
|
2560 /* Having this before file-symlink-p mysteriously caused it to be forgotten
|
|
|
2561 on the RT/PC. */
|
|
|
2562 DEFUN ("file-writable-p", Ffile_writable_p, Sfile_writable_p, 1, 1, 0 /*
|
|
|
2563 Return t if file FILENAME can be written or created by you.
|
|
|
2564 */ )
|
|
|
2565 (filename)
|
|
|
2566 Lisp_Object filename;
|
|
|
2567 {
|
|
|
2568 /* This function can GC */
|
|
|
2569 Lisp_Object abspath, dir;
|
|
|
2570 Lisp_Object handler;
|
|
|
2571 struct stat statbuf;
|
|
|
2572 struct gcpro gcpro1;
|
|
|
2573
|
|
|
2574 GCPRO1 (filename);
|
|
|
2575 CHECK_STRING (filename);
|
|
|
2576 abspath = Fexpand_file_name (filename, Qnil);
|
|
|
2577 UNGCPRO;
|
|
|
2578
|
|
|
2579 /* If the file name has special constructs in it,
|
|
|
2580 call the corresponding file handler. */
|
|
|
2581 GCPRO1 (abspath);
|
|
|
2582 handler = Ffind_file_name_handler (abspath, Qfile_writable_p);
|
|
|
2583 UNGCPRO;
|
|
|
2584 if (!NILP (handler))
|
|
|
2585 return call2 (handler, Qfile_writable_p, abspath);
|
|
|
2586
|
|
|
2587 if (stat ((char *) string_data (XSTRING (abspath)), &statbuf) >= 0)
|
|
|
2588 return (check_writable ((char *) string_data (XSTRING (abspath)))
|
|
|
2589 ? Qt : Qnil);
|
|
|
2590
|
|
|
2591
|
|
|
2592 dir = Ffile_name_directory (abspath);
|
|
|
2593 #if defined (VMS) || defined (MSDOS)
|
|
|
2594 if (!NILP (dir))
|
|
|
2595 dir = Fdirectory_file_name (dir);
|
|
|
2596 #endif /* VMS or MSDOS */
|
|
|
2597 return (check_writable (!NILP (dir) ? (char *) string_data (XSTRING (dir))
|
|
|
2598 : "")
|
|
|
2599 ? Qt : Qnil);
|
|
|
2600 }
|
|
|
2601
|
|
|
2602 DEFUN ("file-symlink-p", Ffile_symlink_p, Sfile_symlink_p, 1, 1, 0 /*
|
|
|
2603 Return non-nil if file FILENAME is the name of a symbolic link.
|
|
|
2604 The value is the name of the file to which it is linked.
|
|
|
2605 Otherwise returns nil.
|
|
|
2606 */ )
|
|
|
2607 (filename)
|
|
|
2608 Lisp_Object filename;
|
|
|
2609 {
|
|
|
2610 /* This function can GC */
|
|
|
2611 #ifdef S_IFLNK
|
|
|
2612 char *buf;
|
|
|
2613 int bufsize;
|
|
|
2614 int valsize;
|
|
|
2615 Lisp_Object val;
|
|
|
2616 Lisp_Object handler;
|
|
|
2617 struct gcpro gcpro1;
|
|
|
2618
|
|
|
2619 GCPRO1 (filename);
|
|
|
2620 CHECK_STRING (filename);
|
|
|
2621 filename = Fexpand_file_name (filename, Qnil);
|
|
|
2622 UNGCPRO;
|
|
|
2623
|
|
|
2624 /* If the file name has special constructs in it,
|
|
|
2625 call the corresponding file handler. */
|
|
|
2626 handler = Ffind_file_name_handler (filename, Qfile_symlink_p);
|
|
|
2627 if (!NILP (handler))
|
|
|
2628 return call2 (handler, Qfile_symlink_p, filename);
|
|
|
2629
|
|
|
2630 bufsize = 100;
|
|
|
2631 while (1)
|
|
|
2632 {
|
|
|
2633 buf = (char *) xmalloc (bufsize);
|
|
|
2634 memset (buf, 0, bufsize);
|
|
|
2635 valsize = readlink ((char *) string_data (XSTRING (filename)),
|
|
|
2636 buf, bufsize);
|
|
|
2637 if (valsize < bufsize) break;
|
|
|
2638 /* Buffer was not long enough */
|
|
|
2639 xfree (buf);
|
|
|
2640 bufsize *= 2;
|
|
|
2641 }
|
|
|
2642 if (valsize == -1)
|
|
|
2643 {
|
|
|
2644 xfree (buf);
|
|
|
2645 return Qnil;
|
|
|
2646 }
|
|
|
2647 val = make_string ((Bufbyte *) buf, valsize);
|
|
|
2648 xfree (buf);
|
|
|
2649 return val;
|
|
|
2650 #else /* not S_IFLNK */
|
|
|
2651 return Qnil;
|
|
|
2652 #endif /* not S_IFLNK */
|
|
|
2653 }
|
|
|
2654
|
|
|
2655 DEFUN ("file-directory-p", Ffile_directory_p, Sfile_directory_p, 1, 1, 0 /*
|
|
|
2656 Return t if file FILENAME is the name of a directory as a file.
|
|
|
2657 A directory name spec may be given instead; then the value is t
|
|
|
2658 if the directory so specified exists and really is a directory.
|
|
|
2659 */ )
|
|
|
2660 (filename)
|
|
|
2661 Lisp_Object filename;
|
|
|
2662 {
|
|
|
2663 /* This function can GC */
|
|
|
2664 Lisp_Object abspath;
|
|
|
2665 struct stat st;
|
|
|
2666 Lisp_Object handler;
|
|
|
2667 struct gcpro gcpro1;
|
|
|
2668
|
|
|
2669 GCPRO1 (filename);
|
|
|
2670 abspath = expand_and_dir_to_file (filename,
|
|
|
2671 current_buffer->directory);
|
|
|
2672 UNGCPRO;
|
|
|
2673
|
|
|
2674 /* If the file name has special constructs in it,
|
|
|
2675 call the corresponding file handler. */
|
|
|
2676 GCPRO1 (abspath);
|
|
|
2677 handler = Ffind_file_name_handler (abspath, Qfile_directory_p);
|
|
|
2678 UNGCPRO;
|
|
|
2679 if (!NILP (handler))
|
|
|
2680 return call2 (handler, Qfile_directory_p, abspath);
|
|
|
2681
|
|
|
2682 if (stat ((char *) string_data (XSTRING (abspath)), &st) < 0)
|
|
|
2683 return Qnil;
|
|
|
2684 return (st.st_mode & S_IFMT) == S_IFDIR ? Qt : Qnil;
|
|
|
2685 }
|
|
|
2686
|
|
|
2687 DEFUN ("file-accessible-directory-p",
|
|
|
2688 Ffile_accessible_directory_p, Sfile_accessible_directory_p, 1, 1, 0 /*
|
|
|
2689 Return t if file FILENAME is the name of a directory as a file,
|
|
|
2690 and files in that directory can be opened by you. In order to use a
|
|
|
2691 directory as a buffer's current directory, this predicate must return true.
|
|
|
2692 A directory name spec may be given instead; then the value is t
|
|
|
2693 if the directory so specified exists and really is a readable and
|
|
|
2694 searchable directory.
|
|
|
2695 */ )
|
|
|
2696 (filename)
|
|
|
2697 Lisp_Object filename;
|
|
|
2698 {
|
|
|
2699 /* This function can GC */
|
|
|
2700 Lisp_Object handler;
|
|
|
2701 struct gcpro gcpro1;
|
|
|
2702
|
|
|
2703 /* If the file name has special constructs in it,
|
|
|
2704 call the corresponding file handler. */
|
|
|
2705 handler = Ffind_file_name_handler (filename, Qfile_accessible_directory_p);
|
|
|
2706 if (!NILP (handler))
|
|
|
2707 return call2 (handler, Qfile_accessible_directory_p,
|
|
|
2708 filename);
|
|
|
2709
|
|
|
2710 GCPRO1 (filename);
|
|
|
2711 if (NILP (Ffile_directory_p (filename)))
|
|
|
2712 {
|
|
|
2713 UNGCPRO;
|
|
|
2714 return (Qnil);
|
|
|
2715 }
|
|
|
2716 handler = Ffile_executable_p (filename);
|
|
|
2717 UNGCPRO;
|
|
|
2718 return (handler);
|
|
|
2719 }
|
|
|
2720
|
|
|
2721 DEFUN ("file-regular-p", Ffile_regular_p, Sfile_regular_p, 1, 1, 0 /*
|
|
|
2722 "Return t if file FILENAME is the name of a regular file.
|
|
|
2723 This is the sort of file that holds an ordinary stream of data bytes.
|
|
|
2724 */ )
|
|
|
2725 (filename)
|
|
|
2726 Lisp_Object filename;
|
|
|
2727 {
|
|
|
2728 REGISTER Lisp_Object abspath;
|
|
|
2729 struct stat st;
|
|
|
2730 Lisp_Object handler;
|
|
|
2731
|
|
|
2732 abspath = expand_and_dir_to_file (filename, current_buffer->directory);
|
|
|
2733
|
|
|
2734 /* If the file name has special constructs in it,
|
|
|
2735 call the corresponding file handler. */
|
|
|
2736 handler = Ffind_file_name_handler (abspath, Qfile_regular_p);
|
|
|
2737 if (!NILP (handler))
|
|
|
2738 return call2 (handler, Qfile_regular_p, abspath);
|
|
|
2739
|
|
|
2740 if (stat ((char *) string_data (XSTRING (abspath)), &st) < 0)
|
|
|
2741 return Qnil;
|
|
|
2742 return (st.st_mode & S_IFMT) == S_IFREG ? Qt : Qnil;
|
|
|
2743 }
|
|
|
2744
|
|
|
2745 DEFUN ("file-modes", Ffile_modes, Sfile_modes, 1, 1, 0 /*
|
|
|
2746 Return mode bits of FILE, as an integer.
|
|
|
2747 */ )
|
|
|
2748 (filename)
|
|
|
2749 Lisp_Object filename;
|
|
|
2750 {
|
|
|
2751 /* This function can GC */
|
|
|
2752 Lisp_Object abspath;
|
|
|
2753 struct stat st;
|
|
|
2754 Lisp_Object handler;
|
|
|
2755 struct gcpro gcpro1;
|
|
|
2756
|
|
|
2757 GCPRO1 (filename);
|
|
|
2758 abspath = expand_and_dir_to_file (filename,
|
|
|
2759 current_buffer->directory);
|
|
|
2760 UNGCPRO;
|
|
|
2761
|
|
|
2762 /* If the file name has special constructs in it,
|
|
|
2763 call the corresponding file handler. */
|
|
|
2764 GCPRO1 (abspath);
|
|
|
2765 handler = Ffind_file_name_handler (abspath, Qfile_modes);
|
|
|
2766 UNGCPRO;
|
|
|
2767 if (!NILP (handler))
|
|
|
2768 return call2 (handler, Qfile_modes, abspath);
|
|
|
2769
|
|
|
2770 if (stat ((char *) string_data (XSTRING (abspath)), &st) < 0)
|
|
|
2771 return Qnil;
|
|
|
2772 #ifdef DOS_NT
|
|
|
2773 if (check_executable (XSTRING (abspath)->data))
|
|
|
2774 st.st_mode |= S_IEXEC;
|
|
|
2775 #endif /* DOS_NT */
|
|
|
2776
|
|
|
2777 return make_int (st.st_mode & 07777);
|
|
|
2778 }
|
|
|
2779
|
|
|
2780 DEFUN ("set-file-modes", Fset_file_modes, Sset_file_modes, 2, 2, 0 /*
|
|
|
2781 Set mode bits of FILE to MODE (an integer).
|
|
|
2782 Only the 12 low bits of MODE are used.
|
|
|
2783 */ )
|
|
|
2784 (filename, mode)
|
|
|
2785 Lisp_Object filename, mode;
|
|
|
2786 {
|
|
|
2787 /* This function can GC */
|
|
|
2788 Lisp_Object abspath;
|
|
|
2789 Lisp_Object handler;
|
|
|
2790 struct gcpro gcpro1, gcpro2;
|
|
|
2791
|
|
|
2792 GCPRO2 (filename, mode);
|
|
|
2793 abspath = Fexpand_file_name (filename, current_buffer->directory);
|
|
|
2794 CHECK_INT (mode);
|
|
|
2795 UNGCPRO;
|
|
|
2796
|
|
|
2797 /* If the file name has special constructs in it,
|
|
|
2798 call the corresponding file handler. */
|
|
|
2799 GCPRO1 (abspath);
|
|
|
2800 handler = Ffind_file_name_handler (abspath, Qset_file_modes);
|
|
|
2801 UNGCPRO;
|
|
|
2802 if (!NILP (handler))
|
|
|
2803 return call3 (handler, Qset_file_modes, abspath, mode);
|
|
|
2804
|
|
|
2805 if (chmod ((char *) string_data (XSTRING (abspath)), XINT (mode)) < 0)
|
|
|
2806 report_file_error ("Doing chmod", Fcons (abspath, Qnil));
|
|
|
2807
|
|
|
2808 return Qnil;
|
|
|
2809 }
|
|
|
2810
|
|
|
2811 DEFUN ("set-default-file-modes", Fset_default_file_modes,
|
|
|
2812 Sset_default_file_modes, 1, 1, 0 /*
|
|
|
2813 Set the file permission bits for newly created files.
|
|
|
2814 MASK should be an integer; if a permission's bit in MASK is 1,
|
|
|
2815 subsequently created files will not have that permission enabled.
|
|
|
2816 Only the low 9 bits are used.
|
|
|
2817 This setting is inherited by subprocesses.
|
|
|
2818 */ )
|
|
|
2819 (mode)
|
|
|
2820 Lisp_Object mode;
|
|
|
2821 {
|
|
|
2822 CHECK_INT (mode);
|
|
|
2823
|
|
|
2824 umask ((~ XINT (mode)) & 0777);
|
|
|
2825
|
|
|
2826 return Qnil;
|
|
|
2827 }
|
|
|
2828
|
|
|
2829 DEFUN ("default-file-modes", Fdefault_file_modes, Sdefault_file_modes, 0, 0, 0 /*
|
|
|
2830 Return the default file protection for created files.
|
|
|
2831 The umask value determines which permissions are enabled in newly
|
|
|
2832 created files. If a permission's bit in the umask is 1, subsequently
|
|
|
2833 created files will not have that permission enabled.
|
|
|
2834 */ )
|
|
|
2835 ()
|
|
|
2836 {
|
|
|
2837 int mode;
|
|
|
2838
|
|
|
2839 mode = umask (0);
|
|
|
2840 umask (mode);
|
|
|
2841
|
|
|
2842 return make_int ((~ mode) & 0777);
|
|
|
2843 }
|
|
|
2844
|
|
|
2845 #ifndef VMS
|
|
|
2846 DEFUN ("unix-sync", Funix_sync, Sunix_sync, 0, 0, "" /*
|
|
|
2847 Tell Unix to finish all pending disk updates.
|
|
|
2848 */ )
|
|
|
2849 ()
|
|
|
2850 {
|
|
|
2851 sync ();
|
|
|
2852 return Qnil;
|
|
|
2853 }
|
|
|
2854 #endif /* !VMS */
|
|
|
2855
|
|
|
2856
|
|
|
2857 DEFUN ("file-newer-than-file-p", Ffile_newer_than_file_p,
|
|
|
2858 Sfile_newer_than_file_p, 2, 2, 0 /*
|
|
|
2859 Return t if file FILE1 is newer than file FILE2.
|
|
|
2860 If FILE1 does not exist, the answer is nil;
|
|
|
2861 otherwise, if FILE2 does not exist, the answer is t.
|
|
|
2862 */ )
|
|
|
2863 (file1, file2)
|
|
|
2864 Lisp_Object file1, file2;
|
|
|
2865 {
|
|
|
2866 /* This function can GC */
|
|
|
2867 Lisp_Object abspath1, abspath2;
|
|
|
2868 struct stat st;
|
|
|
2869 int mtime1;
|
|
|
2870 Lisp_Object handler;
|
|
|
2871 struct gcpro gcpro1, gcpro2;
|
|
|
2872
|
|
|
2873 CHECK_STRING (file1);
|
|
|
2874 CHECK_STRING (file2);
|
|
|
2875
|
|
|
2876 abspath1 = Qnil;
|
|
|
2877 GCPRO2 (abspath1, file2);
|
|
|
2878 abspath1 = expand_and_dir_to_file (file1,
|
|
|
2879 current_buffer->directory);
|
|
|
2880 abspath2 = expand_and_dir_to_file (file2,
|
|
|
2881 current_buffer->directory);
|
|
|
2882 UNGCPRO;
|
|
|
2883
|
|
|
2884 /* If the file name has special constructs in it,
|
|
|
2885 call the corresponding file handler. */
|
|
|
2886 GCPRO2 (abspath1, abspath2);
|
|
|
2887 handler = Ffind_file_name_handler (abspath1, Qfile_newer_than_file_p);
|
|
|
2888 if (NILP (handler))
|
|
|
2889 handler = Ffind_file_name_handler (abspath2, Qfile_newer_than_file_p);
|
|
|
2890 UNGCPRO;
|
|
|
2891 if (!NILP (handler))
|
|
|
2892 return call3 (handler, Qfile_newer_than_file_p, abspath1,
|
|
|
2893 abspath2);
|
|
|
2894
|
|
|
2895 if (stat ((char *) string_data (XSTRING (abspath1)), &st) < 0)
|
|
|
2896 return Qnil;
|
|
|
2897
|
|
|
2898 mtime1 = st.st_mtime;
|
|
|
2899
|
|
|
2900 if (stat ((char *) string_data (XSTRING (abspath2)), &st) < 0)
|
|
|
2901 return Qt;
|
|
|
2902
|
|
|
2903 return (mtime1 > st.st_mtime) ? Qt : Qnil;
|
|
|
2904 }
|
|
|
2905
|
|
|
2906
|
|
|
2907 #ifdef DOS_NT
|
|
|
2908 Lisp_Object Qfind_buffer_file_type;
|
|
|
2909 #endif /* DOS_NT */
|
|
|
2910
|
|
|
2911 #define READ_BUF_SIZE (2 << 16)
|
|
|
2912
|
|
|
2913 DEFUN ("insert-file-contents-internal", Finsert_file_contents_internal,
|
|
|
2914 Sinsert_file_contents_internal, 1, 5, 0 /*
|
|
|
2915 Insert contents of file FILENAME after point.
|
|
|
2916 Returns list of absolute file name and length of data inserted.
|
|
|
2917 If second argument VISIT is non-nil, the buffer's visited filename
|
|
|
2918 and last save file modtime are set, and it is marked unmodified.
|
|
|
2919 If visiting and the file does not exist, visiting is completed
|
|
|
2920 before the error is signaled.
|
|
|
2921
|
|
|
2922 The optional third and fourth arguments BEG and END
|
|
|
2923 specify what portion of the file to insert.
|
|
|
2924 If VISIT is non-nil, BEG and END must be nil.
|
|
|
2925 If optional fifth argument REPLACE is non-nil,
|
|
|
2926 it means replace the current buffer contents (in the accessible portion)
|
|
|
2927 with the file contents. This is better than simply deleting and inserting
|
|
|
2928 the whole thing because (1) it preserves some marker positions
|
|
|
2929 and (2) it puts less data in the undo list.
|
|
|
2930 */ )
|
|
|
2931 (filename, visit, beg, end, replace)
|
|
|
2932 Lisp_Object filename, visit, beg, end, replace;
|
|
|
2933 {
|
|
|
2934 /* This function can GC */
|
|
|
2935 struct stat st;
|
|
|
2936 int fd;
|
|
|
2937 int saverrno = 0;
|
|
|
2938 Charcount inserted = 0;
|
|
|
2939 int speccount;
|
|
|
2940 struct gcpro gcpro1, gcpro2, gcpro3, gcpro4;
|
|
|
2941 Lisp_Object handler = Qnil, val;
|
|
|
2942 int total;
|
|
|
2943 Bufbyte read_buf[READ_BUF_SIZE];
|
|
|
2944 int mc_count;
|
|
|
2945 struct buffer *buf = current_buffer;
|
|
|
2946 int not_regular = 0;
|
|
|
2947
|
|
|
2948 if (buf->base_buffer && ! NILP (visit))
|
|
|
2949 error ("Cannot do file visiting in an indirect buffer");
|
|
|
2950
|
|
|
2951 /* No need to call Fbarf_if_buffer_read_only() here.
|
|
|
2952 That's called in begin_multiple_change() or wherever. */
|
|
|
2953
|
|
|
2954 val = Qnil;
|
|
|
2955
|
|
|
2956 GCPRO4 (filename, val, visit, handler);
|
|
|
2957
|
|
|
2958 mc_count = (NILP (replace)) ?
|
|
|
2959 begin_multiple_change (buf, BUF_PT (buf), BUF_PT (buf)) :
|
|
|
2960 begin_multiple_change (buf, BUF_BEG (buf), BUF_Z (buf));
|
|
|
2961
|
|
|
2962 speccount = specpdl_depth (); /* begin_multiple_change also adds
|
|
|
2963 an unwind_protect */
|
|
|
2964
|
|
|
2965 filename = Fexpand_file_name (filename, Qnil);
|
|
|
2966
|
|
|
2967 /* If the file name has special constructs in it,
|
|
|
2968 call the corresponding file handler. */
|
|
|
2969 handler = Ffind_file_name_handler (filename, Qinsert_file_contents);
|
|
|
2970 if (!NILP (handler))
|
|
|
2971 {
|
|
|
2972 val = call6 (handler, Qinsert_file_contents, filename,
|
|
|
2973 visit, beg, end, replace);
|
|
|
2974 goto handled;
|
|
|
2975 }
|
|
|
2976
|
|
|
2977 if ( (!NILP (beg) || !NILP (end)) && !NILP (visit) )
|
|
|
2978 error ("Attempt to visit less than an entire file");
|
|
|
2979
|
|
|
2980 if (!NILP (beg))
|
|
|
2981 CHECK_INT (beg);
|
|
|
2982 else
|
|
|
2983 beg = Qzero;
|
|
|
2984
|
|
|
2985 if (!NILP (end))
|
|
|
2986 CHECK_INT (end);
|
|
|
2987
|
|
|
2988 fd = -1;
|
|
|
2989
|
|
|
2990 #ifndef APOLLO
|
|
|
2991 if (stat ((char *) string_data (XSTRING (filename)), &st) < 0)
|
|
|
2992 #else /* APOLLO */
|
|
|
2993 if ((fd = open ((char *) string_data (XSTRING (filename)), O_RDONLY, 0)) < 0
|
|
|
2994 || fstat (fd, &st) < 0)
|
|
|
2995 #endif /* APOLLO */
|
|
|
2996 {
|
|
|
2997 if (fd >= 0) close (fd);
|
|
|
2998 badopen:
|
|
|
2999 if (NILP (visit))
|
|
|
3000 report_file_error ("Opening input file",
|
|
|
3001 Fcons (filename, Qnil));
|
|
|
3002 st.st_mtime = -1;
|
|
|
3003 goto notfound;
|
|
|
3004 }
|
|
|
3005
|
|
|
3006 #ifdef S_IFREG
|
|
|
3007 /* This code will need to be changed in order to work on named
|
|
|
3008 pipes, and it's probably just not worth it. So we should at
|
|
|
3009 least signal an error. */
|
|
|
3010 if (!S_ISREG (st.st_mode))
|
|
|
3011 {
|
|
|
3012 if (NILP (visit))
|
|
|
3013 {
|
|
|
3014 end_multiple_change (buf, mc_count);
|
|
|
3015
|
|
|
3016 return Fsignal (Qfile_error,
|
|
|
3017 list2 (build_translated_string("not a regular file"),
|
|
|
3018 filename));
|
|
|
3019 }
|
|
|
3020 else
|
|
|
3021 {
|
|
|
3022 not_regular = 1;
|
|
|
3023 goto notfound;
|
|
|
3024 }
|
|
|
3025 }
|
|
|
3026 #endif
|
|
|
3027
|
|
|
3028 if (fd < 0)
|
|
|
3029 if ((fd = open ((char *) string_data (XSTRING (filename)), O_RDONLY, 0)) < 0)
|
|
|
3030 goto badopen;
|
|
|
3031
|
|
|
3032 /* Replacement should preserve point as it preserves markers. */
|
|
|
3033 if (!NILP (replace))
|
|
|
3034 record_unwind_protect (restore_point_unwind, Fpoint_marker (Qnil, Qnil));
|
|
|
3035
|
|
|
3036 record_unwind_protect (close_file_unwind, make_int (fd));
|
|
|
3037
|
|
|
3038 /* Supposedly happens on VMS. */
|
|
|
3039 if (st.st_size < 0)
|
|
|
3040 error ("File size is negative");
|
|
|
3041
|
|
|
3042 if (NILP (end))
|
|
|
3043 {
|
|
|
3044 end = make_int (st.st_size);
|
|
|
3045 if (XINT (end) != st.st_size)
|
|
|
3046 error ("maximum buffer size exceeded");
|
|
|
3047 }
|
|
|
3048
|
|
|
3049 /* If requested, replace the accessible part of the buffer
|
|
|
3050 with the file contents. Avoid replacing text at the
|
|
|
3051 beginning or end of the buffer that matches the file contents;
|
|
|
3052 that preserves markers pointing to the unchanged parts. */
|
|
|
3053 #if !defined (DOS_NT)
|
|
|
3054 /* The replace-mode code currently only works when the assumption
|
|
|
3055 'one byte == one char' holds true. This fails under MSDOS and
|
|
|
3056 Windows NT (because newlines are represented as CR-LF in text
|
|
|
3057 files). */
|
|
|
3058 # define FSFMACS_SPEEDY_INSERT
|
|
|
3059 #endif
|
|
|
3060 #ifndef FSFMACS_SPEEDY_INSERT
|
|
|
3061 if (!NILP (replace))
|
|
|
3062 {
|
|
|
3063 buffer_delete_range (buf, BUF_BEG (buf), BUF_Z (buf),
|
|
|
3064 !NILP (visit) ? INSDEL_NO_LOCKING : 0);
|
|
|
3065 }
|
|
|
3066 #else /* FSFMACS_SPEEDY_INSERT */
|
|
|
3067 if (!NILP (replace))
|
|
|
3068 {
|
|
|
3069 char buffer[1 << 14];
|
|
|
3070 Bufpos same_at_start = BUF_BEGV (buf);
|
|
|
3071 Bufpos same_at_end = BUF_ZV (buf);
|
|
|
3072 int overlap;
|
|
|
3073
|
|
|
3074 /* Count how many chars at the start of the file
|
|
|
3075 match the text at the beginning of the buffer. */
|
|
|
3076 while (1)
|
|
|
3077 {
|
|
|
3078 int nread;
|
|
|
3079 Bufpos bufpos;
|
|
|
3080
|
|
|
3081 nread = read_allowing_quit (fd, buffer, sizeof buffer);
|
|
|
3082 if (nread < 0)
|
|
|
3083 error ("IO error reading %s: %s",
|
|
|
3084 string_data (XSTRING (filename)), strerror (errno));
|
|
|
3085 else if (nread == 0)
|
|
|
3086 break;
|
|
|
3087 bufpos = 0;
|
|
|
3088 while (bufpos < nread && same_at_start < BUF_ZV (buf)
|
|
|
3089 && BUF_FETCH_CHAR (buf, same_at_start) == buffer[bufpos])
|
|
|
3090 same_at_start++, bufpos++;
|
|
|
3091 /* If we found a discrepancy, stop the scan.
|
|
|
3092 Otherwise loop around and scan the next bufferfull. */
|
|
|
3093 if (bufpos != nread)
|
|
|
3094 break;
|
|
|
3095 }
|
|
|
3096 /* If the file matches the buffer completely,
|
|
|
3097 there's no need to replace anything. */
|
|
|
3098 if (same_at_start - BUF_BEGV (buf) == st.st_size)
|
|
|
3099 {
|
|
|
3100 close (fd);
|
|
|
3101 unbind_to (speccount, Qnil);
|
|
|
3102 /* Truncate the buffer to the size of the file. */
|
|
|
3103 buffer_delete_range (buf, same_at_start, same_at_end,
|
|
|
3104 !NILP (visit) ? INSDEL_NO_LOCKING : 0);
|
|
|
3105 goto handled;
|
|
|
3106 }
|
|
|
3107 /* Count how many chars at the end of the file
|
|
|
3108 match the text at the end of the buffer. */
|
|
|
3109 while (1)
|
|
|
3110 {
|
|
|
3111 int total_read, nread;
|
|
|
3112 Bufpos bufpos, curpos, trial;
|
|
|
3113
|
|
|
3114 /* At what file position are we now scanning? */
|
|
|
3115 curpos = st.st_size - (BUF_ZV (buf) - same_at_end);
|
|
|
3116 /* If the entire file matches the buffer tail, stop the scan. */
|
|
|
3117 if (curpos == 0)
|
|
|
3118 break;
|
|
|
3119 /* How much can we scan in the next step? */
|
|
|
3120 trial = min (curpos, sizeof buffer);
|
|
|
3121 if (lseek (fd, curpos - trial, 0) < 0)
|
|
|
3122 report_file_error ("Setting file position",
|
|
|
3123 Fcons (filename, Qnil));
|
|
|
3124
|
|
|
3125 total_read = 0;
|
|
|
3126 while (total_read < trial)
|
|
|
3127 {
|
|
|
3128 nread = read_allowing_quit (fd, buffer + total_read,
|
|
|
3129 trial - total_read);
|
|
|
3130 if (nread <= 0)
|
|
|
3131 error ("IO error reading %s: %s",
|
|
|
3132 string_data (XSTRING (filename)), strerror (errno));
|
|
|
3133 total_read += nread;
|
|
|
3134 }
|
|
|
3135 /* Scan this bufferfull from the end, comparing with
|
|
|
3136 the Emacs buffer. */
|
|
|
3137 bufpos = total_read;
|
|
|
3138 /* Compare with same_at_start to avoid counting some buffer text
|
|
|
3139 as matching both at the file's beginning and at the end. */
|
|
|
3140 while (bufpos > 0 && same_at_end > same_at_start
|
|
|
3141 && BUF_FETCH_CHAR (buf, same_at_end - 1) ==
|
|
|
3142 buffer[bufpos - 1])
|
|
|
3143 same_at_end--, bufpos--;
|
|
|
3144 /* If we found a discrepancy, stop the scan.
|
|
|
3145 Otherwise loop around and scan the preceding bufferfull. */
|
|
|
3146 if (bufpos != 0)
|
|
|
3147 break;
|
|
|
3148 /* If display current starts at beginning of line,
|
|
|
3149 keep it that way. */
|
|
|
3150 if (XBUFFER (XWINDOW (Fselected_window (Qnil))->buffer) == buf)
|
|
|
3151 XWINDOW (Fselected_window (Qnil))->start_at_line_beg =
|
|
|
3152 !NILP (Fbolp (make_buffer (buf)));
|
|
|
3153 }
|
|
|
3154
|
|
|
3155 /* Don't try to reuse the same piece of text twice. */
|
|
|
3156 overlap = same_at_start - BUF_BEGV (buf) -
|
|
|
3157 (same_at_end + st.st_size - BUF_ZV (buf));
|
|
|
3158 if (overlap > 0)
|
|
|
3159 same_at_end += overlap;
|
|
|
3160
|
|
|
3161 /* Arrange to read only the nonmatching middle part of the file. */
|
|
|
3162 beg = make_int (same_at_start - BUF_BEGV (buf));
|
|
|
3163 end = make_int (st.st_size - (BUF_ZV (buf) - same_at_end));
|
|
|
3164
|
|
|
3165 buffer_delete_range (buf, same_at_start, same_at_end,
|
|
|
3166 !NILP (visit) ? INSDEL_NO_LOCKING : 0);
|
|
|
3167 /* Insert from the file at the proper position. */
|
|
|
3168 BUF_SET_PT (buf, same_at_start);
|
|
|
3169 }
|
|
|
3170 #endif /* FSFMACS_SPEEDY_INSERT */
|
|
|
3171
|
|
|
3172 total = XINT (end) - XINT (beg);
|
|
|
3173
|
|
|
3174 if (XINT (beg) != 0
|
|
|
3175 #ifdef FSFMACS_SPEEDY_INSERT
|
|
|
3176 /* why was this here? asked jwz. The reason is that the replace-mode
|
|
|
3177 connivings above will normally put the file pointer other than
|
|
|
3178 where it should be. */
|
|
|
3179 || !NILP (replace)
|
|
|
3180 #endif /* !FSFMACS_SPEEDY_INSERT */
|
|
|
3181 )
|
|
|
3182 {
|
|
|
3183 if (lseek (fd, XINT (beg), 0) < 0)
|
|
|
3184 report_file_error ("Setting file position",
|
|
|
3185 Fcons (filename, Qnil));
|
|
|
3186 }
|
|
|
3187
|
|
|
3188 {
|
|
|
3189 Bufpos cur_point = BUF_PT (buf);
|
|
|
3190 struct gcpro ngcpro1;
|
|
|
3191 Lisp_Object stream = make_filedesc_input_stream (fd, 0, total,
|
|
|
3192 LSTR_ALLOW_QUIT);
|
|
|
3193
|
|
|
3194 NGCPRO1 (stream);
|
|
|
3195 Lstream_set_buffering (XLSTREAM (stream), LSTREAM_BLOCKN_BUFFERED, 65536);
|
|
|
3196
|
|
|
3197 record_unwind_protect (close_stream_unwind, stream);
|
|
|
3198
|
|
|
3199 /* No need to limit the amount of stuff we attempt to read.
|
|
|
3200 Instead, the limiting occurs inside of the filedesc stream. */
|
|
|
3201 while (1)
|
|
|
3202 {
|
|
|
3203 Bytecount this_len;
|
|
|
3204 Charcount cc_inserted;
|
|
|
3205
|
|
|
3206 QUIT;
|
|
|
3207 this_len = Lstream_read (XLSTREAM (stream), read_buf,
|
|
|
3208 sizeof (read_buf));
|
|
|
3209
|
|
|
3210 if (this_len <= 0)
|
|
|
3211 {
|
|
|
3212 if (this_len < 0)
|
|
|
3213 saverrno = errno;
|
|
|
3214 break;
|
|
|
3215 }
|
|
|
3216
|
|
|
3217 cc_inserted = buffer_insert_raw_string_1 (buf, cur_point, read_buf,
|
|
|
3218 this_len,
|
|
|
3219 !NILP (visit)
|
|
|
3220 ? INSDEL_NO_LOCKING : 0);
|
|
|
3221 inserted += cc_inserted;
|
|
|
3222 cur_point += cc_inserted;
|
|
|
3223 }
|
|
|
3224 NUNGCPRO;
|
|
|
3225 }
|
|
|
3226
|
|
|
3227 #ifdef DOS_NT
|
|
|
3228 /* Determine file type from name and remove LFs from CR-LFs if the file
|
|
|
3229 is deemed to be a text file. */
|
|
|
3230 {
|
|
|
3231 struct gcpro gcpro1;
|
|
|
3232 GCPRO1 (filename);
|
|
|
3233 buf->buffer_file_type
|
|
|
3234 = call1_in_buffer (buf, Qfind_buffer_file_type, filename);
|
|
|
3235 UNGCPRO;
|
|
|
3236 if (NILP (buf->buffer_file_type))
|
|
|
3237 {
|
|
|
3238 buffer_do_msdos_crlf_to_lf (buf, ####);
|
|
|
3239 }
|
|
|
3240 }
|
|
|
3241 #endif
|
|
|
3242
|
|
|
3243 /* Close the file/stream */
|
|
|
3244 unbind_to (speccount, Qnil);
|
|
|
3245
|
|
|
3246 if (saverrno != 0)
|
|
|
3247 {
|
|
|
3248 error ("IO error reading %s: %s",
|
|
|
3249 string_data (XSTRING (filename)), strerror (saverrno));
|
|
|
3250 }
|
|
|
3251
|
|
|
3252 notfound:
|
|
|
3253 handled:
|
|
|
3254
|
|
|
3255 end_multiple_change (buf, mc_count);
|
|
|
3256
|
|
|
3257 if (!NILP (visit))
|
|
|
3258 {
|
|
|
3259 if (!EQ (buf->undo_list, Qt))
|
|
|
3260 buf->undo_list = Qnil;
|
|
|
3261 #ifdef APOLLO
|
|
|
3262 stat ((char *) string_data (XSTRING (filename)), &st);
|
|
|
3263 #endif
|
|
|
3264 if (NILP (handler))
|
|
|
3265 {
|
|
|
3266 buf->modtime = st.st_mtime;
|
|
|
3267 buf->filename = filename;
|
|
|
3268 /* XEmacs addition: */
|
|
|
3269 /* This function used to be in C, ostensibly so that
|
|
|
3270 it could be called here. But that's just silly.
|
|
|
3271 There's no reason C code can't call out to Lisp
|
|
|
3272 code, and it's a lot cleaner this way. */
|
|
|
3273 if (!NILP (Ffboundp (Qcompute_buffer_file_truename)))
|
|
|
3274 call1 (Qcompute_buffer_file_truename, make_buffer (buf));
|
|
|
3275 }
|
|
|
3276 BUF_SAVE_MODIFF (buf) = BUF_MODIFF (buf);
|
|
|
3277 buf->auto_save_modified = BUF_MODIFF (buf);
|
|
|
3278 buf->save_length = make_int (BUF_SIZE (buf));
|
|
|
3279 #ifdef CLASH_DETECTION
|
|
|
3280 if (NILP (handler))
|
|
|
3281 {
|
|
|
3282 if (!NILP (buf->file_truename))
|
|
|
3283 unlock_file (buf->file_truename);
|
|
|
3284 unlock_file (filename);
|
|
|
3285 }
|
|
|
3286 #endif /* CLASH_DETECTION */
|
|
|
3287 if (not_regular)
|
|
|
3288 RETURN_UNGCPRO (Fsignal (Qfile_error,
|
|
|
3289 list2 (build_string ("not a regular file"),
|
|
|
3290 filename)));
|
|
|
3291
|
|
|
3292 /* If visiting nonexistent file, return nil. */
|
|
|
3293 if (buf->modtime == -1)
|
|
|
3294 report_file_error ("Opening input file",
|
|
|
3295 list1 (filename));
|
|
|
3296 }
|
|
|
3297
|
|
|
3298 /* Decode file format */
|
|
|
3299 if (inserted > 0)
|
|
|
3300 {
|
|
|
3301 Lisp_Object insval = call3 (Qformat_decode,
|
|
|
3302 Qnil, make_int (inserted), visit);
|
|
|
3303 CHECK_INT (insval);
|
|
|
3304 inserted = XINT (insval);
|
|
|
3305 }
|
|
|
3306
|
|
|
3307 if (inserted > 0)
|
|
|
3308 {
|
|
|
3309 Lisp_Object p = Vafter_insert_file_functions;
|
|
|
3310 struct gcpro ngcpro1;
|
|
|
3311
|
|
|
3312 NGCPRO1 (p);
|
|
|
3313 while (!NILP (p))
|
|
|
3314 {
|
|
|
3315 Lisp_Object insval =
|
|
|
3316 call1 (Fcar (p), make_int (inserted));
|
|
|
3317 if (!NILP (insval))
|
|
|
3318 {
|
|
|
3319 CHECK_NATNUM (insval);
|
|
|
3320 inserted = XINT (insval);
|
|
|
3321 }
|
|
|
3322 QUIT;
|
|
|
3323 p = Fcdr (p);
|
|
|
3324 }
|
|
|
3325 NUNGCPRO;
|
|
|
3326 }
|
|
|
3327
|
|
|
3328 UNGCPRO;
|
|
|
3329
|
|
|
3330 if (!NILP (val))
|
|
|
3331 return (val);
|
|
|
3332 else
|
|
|
3333 return (list2 (filename, make_int (inserted)));
|
|
|
3334 }
|
|
|
3335
|
|
|
3336
|
|
|
3337 static int a_write (Lisp_Object outstream, Lisp_Object instream, int pos,
|
|
|
3338 Lisp_Object *annot);
|
|
|
3339 static Lisp_Object build_annotations (Lisp_Object start, Lisp_Object end);
|
|
|
3340
|
|
|
3341 /* If build_annotations switched buffers, switch back to BUF.
|
|
|
3342 Kill the temporary buffer that was selected in the meantime. */
|
|
|
3343
|
|
|
3344 static Lisp_Object
|
|
|
3345 build_annotations_unwind (Lisp_Object buf)
|
|
|
3346 {
|
|
|
3347 Lisp_Object tembuf;
|
|
|
3348
|
|
|
3349 if (XBUFFER (buf) == current_buffer)
|
|
|
3350 return Qnil;
|
|
|
3351 tembuf = Fcurrent_buffer ();
|
|
|
3352 Fset_buffer (buf);
|
|
|
3353 Fkill_buffer (tembuf);
|
|
|
3354 return Qnil;
|
|
|
3355 }
|
|
|
3356
|
|
|
3357 DEFUN ("write-region-internal", Fwrite_region_internal,
|
|
|
3358 Swrite_region_internal, 3, 6,
|
|
|
3359 "r\nFWrite region to file: " /*
|
|
|
3360 Write current region into specified file.
|
|
|
3361 When called from a program, takes three arguments:
|
|
|
3362 START, END and FILENAME. START and END are buffer positions.
|
|
|
3363 Optional fourth argument APPEND if non-nil means
|
|
|
3364 append to existing file contents (if any).
|
|
|
3365 Optional fifth argument VISIT if t means
|
|
|
3366 set the last-save-file-modtime of buffer to this file's modtime
|
|
|
3367 and mark buffer not modified.
|
|
|
3368 If VISIT is a string, it is a second file name;
|
|
|
3369 the output goes to FILENAME, but the buffer is marked as visiting VISIT.
|
|
|
3370 VISIT is also the file name to lock and unlock for clash detection.
|
|
|
3371 If VISIT is neither t nor nil nor a string,
|
|
|
3372 that means do not print the \"Wrote file\" message.
|
|
|
3373 Kludgy feature: if START is a string, then that string is written
|
|
|
3374 to the file, instead of any buffer contents, and END is ignored.
|
|
|
3375 */ )
|
|
|
3376 (start, end, filename, append, visit, lockname)
|
|
|
3377 Lisp_Object start, end, filename, append, visit, lockname;
|
|
|
3378 {
|
|
|
3379 /* This function can GC */
|
|
|
3380 int desc;
|
|
|
3381 int failure;
|
|
|
3382 int save_errno = 0;
|
|
|
3383 struct stat st;
|
|
|
3384 Lisp_Object fn;
|
|
|
3385 int speccount = specpdl_depth ();
|
|
|
3386 #ifdef VMS
|
|
|
3387 unsigned char *fname = 0; /* If non-0, original filename (must rename) */
|
|
|
3388 #endif /* VMS */
|
|
|
3389 int visiting_other = STRINGP (visit);
|
|
|
3390 int visiting = (EQ (visit, Qt) || visiting_other);
|
|
|
3391 int quietly = (!visiting && !NILP (visit));
|
|
|
3392 Lisp_Object visit_file = Qnil;
|
|
|
3393 Lisp_Object annotations = Qnil;
|
|
|
3394 struct buffer *given_buffer;
|
|
|
3395 Bufpos start1, end1;
|
|
|
3396
|
|
|
3397 #ifdef DOS_NT
|
|
|
3398 int buffer_file_type
|
|
|
3399 = NILP (current_buffer->buffer_file_type) ? O_TEXT : O_BINARY;
|
|
|
3400 #endif /* DOS_NT */
|
|
|
3401
|
|
|
3402 if (current_buffer->base_buffer && ! NILP (visit))
|
|
|
3403 error ("Cannot do file visiting in an indirect buffer");
|
|
|
3404
|
|
|
3405 if (!NILP (start) && !STRINGP (start))
|
|
|
3406 get_buffer_range_char (current_buffer, start, end, &start1, &end1, 0);
|
|
|
3407
|
|
|
3408 {
|
|
|
3409 Lisp_Object handler;
|
|
|
3410 struct gcpro gcpro1, gcpro2, gcpro3, gcpro4, gcpro5;
|
|
|
3411 GCPRO5 (start, filename, visit, visit_file, lockname);
|
|
|
3412
|
|
|
3413 if (visiting_other)
|
|
|
3414 visit_file = Fexpand_file_name (visit, Qnil);
|
|
|
3415 else
|
|
|
3416 visit_file = filename;
|
|
|
3417 filename = Fexpand_file_name (filename, Qnil);
|
|
|
3418
|
|
|
3419 UNGCPRO;
|
|
|
3420
|
|
|
3421 if (NILP (lockname))
|
|
|
3422 lockname = visit_file;
|
|
|
3423
|
|
|
3424 /* If the file name has special constructs in it,
|
|
|
3425 call the corresponding file handler. */
|
|
|
3426 handler = Ffind_file_name_handler (filename, Qwrite_region);
|
|
|
3427 /* If FILENAME has no handler, see if VISIT has one. */
|
|
|
3428 if (NILP (handler) && STRINGP (visit))
|
|
|
3429 handler = Ffind_file_name_handler (visit, Qwrite_region);
|
|
|
3430
|
|
|
3431 if (!NILP (handler))
|
|
|
3432 {
|
|
|
3433 Lisp_Object val = call6 (handler, Qwrite_region, start, end,
|
|
|
3434 filename, append, visit);
|
|
|
3435 if (visiting)
|
|
|
3436 {
|
|
|
3437 BUF_SAVE_MODIFF (current_buffer) = BUF_MODIFF (current_buffer);
|
|
|
3438 current_buffer->save_length =
|
|
|
3439 make_int (BUF_SIZE (current_buffer));
|
|
|
3440 current_buffer->filename = visit_file;
|
|
|
3441 MARK_MODELINE_CHANGED;
|
|
|
3442 }
|
|
|
3443 return val;
|
|
|
3444 }
|
|
|
3445 }
|
|
|
3446
|
|
|
3447 #ifdef CLASH_DETECTION
|
|
|
3448 if (!auto_saving)
|
|
|
3449 {
|
|
|
3450 struct gcpro gcpro1, gcpro2, gcpro3, gcpro4;
|
|
|
3451 GCPRO4 (start, filename, visit_file, lockname);
|
|
|
3452 lock_file (lockname);
|
|
|
3453 UNGCPRO;
|
|
|
3454 }
|
|
|
3455 #endif /* CLASH_DETECTION */
|
|
|
3456
|
|
|
3457 /* Special kludge to simplify auto-saving. */
|
|
|
3458 if (NILP (start))
|
|
|
3459 {
|
|
|
3460 start1 = BUF_BEG (current_buffer);
|
|
|
3461 end1 = BUF_Z (current_buffer);
|
|
|
3462 }
|
|
|
3463
|
|
|
3464 record_unwind_protect (build_annotations_unwind, Fcurrent_buffer ());
|
|
|
3465
|
|
|
3466 given_buffer = current_buffer;
|
|
|
3467 annotations = build_annotations (start, end);
|
|
|
3468 if (current_buffer != given_buffer)
|
|
|
3469 {
|
|
|
3470 start1 = BUF_BEGV (current_buffer);
|
|
|
3471 end1 = BUF_ZV (current_buffer);
|
|
|
3472 }
|
|
|
3473
|
|
|
3474 fn = filename;
|
|
|
3475 desc = -1;
|
|
|
3476 if (!NILP (append))
|
|
|
3477 #ifdef DOS_NT
|
|
|
3478 desc = open ((char *) string_data (XSTRING (fn)),
|
|
|
3479 (O_WRONLY | buffer_file_type), 0);
|
|
|
3480 #else /* not DOS_NT */
|
|
|
3481 desc = open ((char *) string_data (XSTRING (fn)), O_WRONLY, 0);
|
|
|
3482 #endif /* not DOS_NT */
|
|
|
3483
|
|
|
3484 if (desc < 0)
|
|
|
3485 #ifndef VMS
|
|
|
3486 {
|
|
|
3487 #ifdef DOS_NT
|
|
|
3488 desc = open ((char *) string_data (XSTRING (fn)),
|
|
|
3489 (O_WRONLY | O_TRUNC | O_CREAT | buffer_file_type),
|
|
|
3490 (S_IREAD | S_IWRITE));
|
|
|
3491 #else /* not DOS_NT */
|
|
|
3492 desc = creat ((char *) string_data (XSTRING (fn)),
|
|
|
3493 ((auto_saving) ? auto_save_mode_bits : 0666));
|
|
|
3494 #endif /* DOS_NT */
|
|
|
3495 }
|
|
|
3496 #else /* VMS */
|
|
|
3497 {
|
|
|
3498 if (auto_saving) /* Overwrite any previous version of autosave file */
|
|
|
3499 {
|
|
|
3500 char *fn_data = string_data (XSTRING (fn));
|
|
|
3501 /* if fn exists, truncate to zero length */
|
|
|
3502 vms_truncate (fn_data);
|
|
|
3503 desc = open (fn_data, O_RDWR, 0);
|
|
|
3504 if (desc < 0)
|
|
|
3505 desc = creat_copy_attrs ((STRINGP (current_buffer->filename)
|
|
|
3506 ? (char *) string_data
|
|
|
3507 (XSTRING (current_buffer->filename))
|
|
|
3508 : 0),
|
|
|
3509 fn_data);
|
|
|
3510 }
|
|
|
3511 else /* Write to temporary name and rename if no errors */
|
|
|
3512 {
|
|
|
3513 Lisp_Object temp_name;
|
|
|
3514
|
|
|
3515 struct gcpro gcpro1, gcpro2, gcpro3;
|
|
|
3516 GCPRO3 (start, filename, visit_file);
|
|
|
3517 {
|
|
|
3518 struct gcpro gcpro1, gcpro2, gcpro3; /* Don't have GCPRO6 */
|
|
|
3519
|
|
|
3520 GCPRO3 (fn, fname, annotations);
|
|
|
3521
|
|
|
3522 temp_name = Ffile_name_directory (filename);
|
|
|
3523
|
|
|
3524 if (NILP (temp_name))
|
|
|
3525 desc = creat ((char *) string_data (XSTRING (fn)), 0666);
|
|
|
3526 else
|
|
|
3527 {
|
|
|
3528 temp_name =
|
|
|
3529 Fmake_temp_name (concat2 (temp_name,
|
|
|
3530 build_string ("$$SAVE$$")));
|
|
|
3531 fname = filename;
|
|
|
3532 fn = temp_name;
|
|
|
3533 desc = creat_copy_attrs (fname,
|
|
|
3534 (char *) string_data (XSTRING (fn)));
|
|
|
3535 if (desc < 0)
|
|
|
3536 {
|
|
|
3537 char *fn_data;
|
|
|
3538 /* If we can't open the temporary file, try creating a new
|
|
|
3539 version of the original file. VMS "creat" creates a
|
|
|
3540 new version rather than truncating an existing file. */
|
|
|
3541 fn = fname;
|
|
|
3542 fname = Qnil;
|
|
|
3543 fn_data = string_data (XSTRING (fn));
|
|
|
3544 desc = creat (fn_data, 0666);
|
|
|
3545 #if 0 /* This can clobber an existing file and fail
|
|
|
3546 to replace it, if the user runs out of
|
|
|
3547 space. */
|
|
|
3548 if (desc < 0)
|
|
|
3549 {
|
|
|
3550 /* We can't make a new version;
|
|
|
3551 try to truncate and rewrite existing version if any.
|
|
|
3552 */
|
|
|
3553 vms_truncate (fn_data);
|
|
|
3554 desc = open (fn_data, O_RDWR, 0);
|
|
|
3555 }
|
|
|
3556 #endif
|
|
|
3557 }
|
|
|
3558 }
|
|
|
3559 UNGCPRO;
|
|
|
3560 }
|
|
|
3561 UNGCPRO;
|
|
|
3562 }
|
|
|
3563 }
|
|
|
3564 #endif /* VMS */
|
|
|
3565
|
|
|
3566 if (desc < 0)
|
|
|
3567 {
|
|
|
3568 #ifdef CLASH_DETECTION
|
|
|
3569 save_errno = errno;
|
|
|
3570 if (!auto_saving) unlock_file (lockname);
|
|
|
3571 errno = save_errno;
|
|
|
3572 #endif /* CLASH_DETECTION */
|
|
|
3573 report_file_error ("Opening output file",
|
|
|
3574 Fcons (filename, Qnil));
|
|
|
3575 }
|
|
|
3576
|
|
|
3577 {
|
|
|
3578 Lisp_Object desc_locative = Fcons (make_int (desc), Qnil);
|
|
|
3579 Lisp_Object instream = Qnil, outstream = Qnil;
|
|
|
3580 struct gcpro gcpro1, gcpro2;
|
|
|
3581 /* need to gcpro; QUIT could happen out of call to write() */
|
|
|
3582 GCPRO2 (instream, outstream);
|
|
|
3583
|
|
|
3584 record_unwind_protect (close_file_unwind, desc_locative);
|
|
|
3585
|
|
|
3586 if (!NILP (append))
|
|
|
3587 {
|
|
|
3588 if (lseek (desc, 0, 2) < 0)
|
|
|
3589 {
|
|
|
3590 #ifdef CLASH_DETECTION
|
|
|
3591 if (!auto_saving) unlock_file (lockname);
|
|
|
3592 #endif /* CLASH_DETECTION */
|
|
|
3593 report_file_error ("Lseek error",
|
|
|
3594 list1 (filename));
|
|
|
3595 }
|
|
|
3596 }
|
|
|
3597
|
|
|
3598 #ifdef VMS
|
|
|
3599 /*
|
|
|
3600 * Kludge Warning: The VMS C RTL likes to insert carriage returns
|
|
|
3601 * if we do writes that don't end with a carriage return. Furthermore
|
|
|
3602 * it cannot handle writes of more then 16K. The modified
|
|
|
3603 * version of "sys_write" in SYSDEP.C (see comment there) copes with
|
|
|
3604 * this EXCEPT for the last record (iff it doesn't end with a carriage
|
|
|
3605 * return). This implies that if your buffer doesn't end with a carriage
|
|
|
3606 * return, you get one free... tough. However it also means that if
|
|
|
3607 * we make two calls to sys_write (a la the following code) you can
|
|
|
3608 * get one at the gap as well. The easiest way to fix this (honest)
|
|
|
3609 * is to move the gap to the next newline (or the end of the buffer).
|
|
|
3610 * Thus this change.
|
|
|
3611 *
|
|
|
3612 * Yech!
|
|
|
3613 */
|
|
|
3614 you lose -- fix this
|
|
|
3615 if (GPT > BUF_BEG (current_buffer) && *GPT_ADDR[-1] != '\n')
|
|
|
3616 move_gap (find_next_newline (current_buffer, GPT, 1));
|
|
|
3617 #endif
|
|
|
3618
|
|
|
3619 failure = 0;
|
|
|
3620
|
|
|
3621 /* Note: I tried increasing the buffering size, along with
|
|
|
3622 various other tricks, but nothing seemed to make much of
|
|
|
3623 a difference in the time it took to save a large file.
|
|
|
3624 (Actually that's not true. With a local disk, changing
|
|
|
3625 the buffer size doesn't seem to make much difference.
|
|
|
3626 With an NFS-mounted disk, it could make a lot of difference
|
|
|
3627 because you're affecting the number of network requests
|
|
|
3628 that need to be made, and there could be a large latency
|
|
|
3629 for each request. So I've increased the buffer size
|
|
|
3630 to 64K.) */
|
|
|
3631 outstream = make_filedesc_output_stream (desc, 0, -1, 0);
|
|
|
3632 Lstream_set_buffering (XLSTREAM (outstream),
|
|
|
3633 LSTREAM_BLOCKN_BUFFERED, 65536);
|
|
|
3634 if (STRINGP (start))
|
|
|
3635 {
|
|
|
3636 instream = make_lisp_string_input_stream (start, 0, -1);
|
|
|
3637 start1 = 0;
|
|
|
3638 }
|
|
|
3639 else
|
|
|
3640 instream = make_lisp_buffer_input_stream (current_buffer, start1, end1,
|
|
|
3641 LSTR_SELECTIVE |
|
|
|
3642 LSTR_IGNORE_ACCESSIBLE);
|
|
|
3643 failure = (0 > (a_write (outstream, instream, start1,
|
|
|
3644 &annotations)));
|
|
|
3645 save_errno = errno;
|
|
|
3646 /* Note that this doesn't close the desc since we created the
|
|
|
3647 stream without the LSTR_CLOSING flag, but it does
|
|
|
3648 flush out any buffered data. */
|
|
|
3649 if (Lstream_close (XLSTREAM (outstream)) < 0)
|
|
|
3650 {
|
|
|
3651 failure = 1;
|
|
|
3652 save_errno = errno;
|
|
|
3653 }
|
|
|
3654 Lstream_close (XLSTREAM (instream));
|
|
|
3655 UNGCPRO;
|
|
|
3656
|
|
|
3657 #ifdef HAVE_FSYNC
|
|
|
3658 /* Note fsync appears to change the modtime on BSD4.2 (both vax and sun).
|
|
|
3659 Disk full in NFS may be reported here. */
|
|
|
3660 /* mib says that closing the file will try to write as fast as NFS can do
|
|
|
3661 it, and that means the fsync here is not crucial for autosave files. */
|
|
|
3662 if (!auto_saving && fsync (desc) < 0
|
|
|
3663 /* If fsync fails with EINTR, don't treat that as serious. */
|
|
|
3664 && errno != EINTR)
|
|
|
3665 {
|
|
|
3666 failure = 1;
|
|
|
3667 save_errno = errno;
|
|
|
3668 }
|
|
|
3669 #endif
|
|
|
3670
|
|
|
3671 /* Spurious "file has changed on disk" warnings have been
|
|
|
3672 observed on Suns as well.
|
|
|
3673 It seems that `close' can change the modtime, under nfs.
|
|
|
3674
|
|
|
3675 (This has supposedly been fixed in Sunos 4,
|
|
|
3676 but who knows about all the other machines with NFS?) */
|
|
|
3677 /* On VMS and APOLLO, must do the stat after the close
|
|
|
3678 since closing changes the modtime. */
|
|
|
3679 #if 0 /* !defined (VMS) && !defined (APOLLO) */
|
|
|
3680 fstat (desc, &st);
|
|
|
3681 #endif
|
|
|
3682
|
|
|
3683 /* NFS can report a write failure now. */
|
|
|
3684 if (close (desc) < 0)
|
|
|
3685 {
|
|
|
3686 failure = 1;
|
|
|
3687 save_errno = errno;
|
|
|
3688 }
|
|
|
3689
|
|
|
3690 /* Discard the close unwind-protect. Execute the one for
|
|
|
3691 build_annotations (switches back to the original current buffer
|
|
|
3692 as necessary). */
|
|
|
3693 XCAR (desc_locative) = Qnil;
|
|
|
3694 unbind_to (speccount, Qnil);
|
|
|
3695 }
|
|
|
3696
|
|
|
3697
|
|
|
3698 #ifdef VMS
|
|
|
3699 /* If we wrote to a temporary name and had no errors, rename to real name. */
|
|
|
3700 if (!NILP (fname))
|
|
|
3701 {
|
|
|
3702 if (!failure)
|
|
|
3703 {
|
|
|
3704 failure = (rename ((char *) string_data (XSTRING (fn)),
|
|
|
3705 (char *) string_data (XSTRING (fname)))
|
|
|
3706 != 0);
|
|
|
3707 save_errno = errno;
|
|
|
3708 }
|
|
|
3709 fn = fname;
|
|
|
3710 }
|
|
|
3711 #endif /* VMS */
|
|
|
3712
|
|
|
3713 #if 1 /* defined (VMS) || defined (APOLLO) */
|
|
|
3714 stat ((char *) string_data (XSTRING (fn)), &st);
|
|
|
3715 #endif
|
|
|
3716
|
|
|
3717 #ifdef CLASH_DETECTION
|
|
|
3718 if (!auto_saving)
|
|
|
3719 unlock_file (lockname);
|
|
|
3720 #endif /* CLASH_DETECTION */
|
|
|
3721
|
|
|
3722 /* Do this before reporting IO error
|
|
|
3723 to avoid a "file has changed on disk" warning on
|
|
|
3724 next attempt to save. */
|
|
|
3725 if (visiting)
|
|
|
3726 current_buffer->modtime = st.st_mtime;
|
|
|
3727
|
|
|
3728 if (failure)
|
|
|
3729 error ("IO error writing %s: %s",
|
|
|
3730 string_data (XSTRING (fn)),
|
|
|
3731 strerror (save_errno));
|
|
|
3732
|
|
|
3733 if (visiting)
|
|
|
3734 {
|
|
|
3735 BUF_SAVE_MODIFF (current_buffer) = BUF_MODIFF (current_buffer);
|
|
|
3736 current_buffer->save_length = make_int (BUF_SIZE (current_buffer));
|
|
|
3737 current_buffer->filename = visit_file;
|
|
|
3738 MARK_MODELINE_CHANGED;
|
|
|
3739 }
|
|
|
3740 else if (quietly)
|
|
|
3741 {
|
|
|
3742 return Qnil;
|
|
|
3743 }
|
|
|
3744
|
|
|
3745 if (!auto_saving)
|
|
|
3746 {
|
|
|
3747 if (visiting_other)
|
|
|
3748 message ("Wrote %s", string_data (XSTRING (visit_file)));
|
|
|
3749 else
|
|
|
3750 {
|
|
|
3751 struct gcpro gcpro1;
|
|
|
3752 Lisp_Object fsp;
|
|
|
3753 GCPRO1 (fn);
|
|
|
3754
|
|
|
3755 fsp = Ffile_symlink_p (fn);
|
|
|
3756 if (NILP (fsp))
|
|
|
3757 message ("Wrote %s", string_data (XSTRING (fn)));
|
|
|
3758 else
|
|
|
3759 message ("Wrote %s (symlink to %s)",
|
|
|
3760 string_data (XSTRING (fn)), string_data (XSTRING (fsp)));
|
|
|
3761 UNGCPRO;
|
|
|
3762 }
|
|
|
3763 }
|
|
|
3764 return Qnil;
|
|
|
3765 }
|
|
|
3766
|
|
|
3767 /* #### This is such a load of shit!!!! There is no way we should define
|
|
|
3768 something so stupid as a subr, just sort the fucking list more
|
|
|
3769 intelligently. */
|
|
|
3770 DEFUN ("car-less-than-car", Fcar_less_than_car, Scar_less_than_car, 2, 2, 0 /*
|
|
|
3771 Return t if (car A) is numerically less than (car B).
|
|
|
3772 */ )
|
|
|
3773 (a, b)
|
|
|
3774 Lisp_Object a, b;
|
|
|
3775 {
|
|
|
3776 return Flss (Fcar (a), Fcar (b));
|
|
|
3777 }
|
|
|
3778
|
|
|
3779 /* Heh heh heh, let's define this too, just to aggravate the person who
|
|
|
3780 wrote the above comment. */
|
|
|
3781 DEFUN ("cdr-less-than-cdr", Fcdr_less_than_cdr, Scdr_less_than_cdr, 2, 2, 0 /*
|
|
|
3782 Return t if (cdr A) is numerically less than (cdr B).
|
|
|
3783 */ )
|
|
|
3784 (a, b)
|
|
|
3785 Lisp_Object a, b;
|
|
|
3786 {
|
|
|
3787 return Flss (Fcdr (a), Fcdr (b));
|
|
|
3788 }
|
|
|
3789
|
|
|
3790 /* Build the complete list of annotations appropriate for writing out
|
|
|
3791 the text between START and END, by calling all the functions in
|
|
|
3792 write-region-annotate-functions and merging the lists they return.
|
|
|
3793 If one of these functions switches to a different buffer, we assume
|
|
|
3794 that buffer contains altered text. Therefore, the caller must
|
|
|
3795 make sure to restore the current buffer in all cases,
|
|
|
3796 as save-excursion would do. */
|
|
|
3797
|
|
|
3798 static Lisp_Object
|
|
|
3799 build_annotations (Lisp_Object start, Lisp_Object end)
|
|
|
3800 {
|
|
|
3801 /* This function can GC */
|
|
|
3802 Lisp_Object annotations;
|
|
|
3803 Lisp_Object p, res;
|
|
|
3804 struct gcpro gcpro1, gcpro2;
|
|
|
3805
|
|
|
3806 annotations = Qnil;
|
|
|
3807 p = Vwrite_region_annotate_functions;
|
|
|
3808 GCPRO2 (annotations, p);
|
|
|
3809 while (!NILP (p))
|
|
|
3810 {
|
|
|
3811 struct buffer *given_buffer = current_buffer;
|
|
|
3812 Vwrite_region_annotations_so_far = annotations;
|
|
|
3813 res = call2 (Fcar (p), start, end);
|
|
|
3814 /* If the function makes a different buffer current,
|
|
|
3815 assume that means this buffer contains altered text to be output.
|
|
|
3816 Reset START and END from the buffer bounds
|
|
|
3817 and discard all previous annotations because they should have
|
|
|
3818 been dealt with by this function. */
|
|
|
3819 if (current_buffer != given_buffer)
|
|
|
3820 {
|
|
|
3821 start = make_int (BUF_BEGV (current_buffer));
|
|
|
3822 end = make_int (BUF_ZV (current_buffer));
|
|
|
3823 annotations = Qnil;
|
|
|
3824 }
|
|
|
3825 (void) Flength (res); /* Check basic validity of return value */
|
|
|
3826 annotations = merge (annotations, res, Qcar_less_than_car);
|
|
|
3827 p = Fcdr (p);
|
|
|
3828 }
|
|
|
3829
|
|
|
3830 /* Now do the same for annotation functions implied by the file-format */
|
|
|
3831 if (auto_saving && (!EQ (Vauto_save_file_format, Qt)))
|
|
|
3832 p = Vauto_save_file_format;
|
|
|
3833 else
|
|
|
3834 p = current_buffer->file_format;
|
|
|
3835 while (!NILP (p))
|
|
|
3836 {
|
|
|
3837 struct buffer *given_buffer = current_buffer;
|
|
|
3838 Vwrite_region_annotations_so_far = annotations;
|
|
|
3839 res = call3 (Qformat_annotate_function, Fcar (p), start, end);
|
|
|
3840 if (current_buffer != given_buffer)
|
|
|
3841 {
|
|
|
3842 start = make_int (BUF_BEGV (current_buffer));
|
|
|
3843 end = make_int (BUF_ZV (current_buffer));
|
|
|
3844 annotations = Qnil;
|
|
|
3845 }
|
|
|
3846 (void) Flength (res);
|
|
|
3847 annotations = merge (annotations, res, Qcar_less_than_car);
|
|
|
3848 p = Fcdr (p);
|
|
|
3849 }
|
|
|
3850 UNGCPRO;
|
|
|
3851 return annotations;
|
|
|
3852 }
|
|
|
3853
|
|
|
3854 /* Write to stream OUTSTREAM the characters from INSTREAM (it is read until
|
|
|
3855 EOF is encountered), assuming they start at position POS in the buffer
|
|
|
3856 of string that STREAM refers to. Intersperse with them the annotations
|
|
|
3857 from *ANNOT that fall into the range of positions we are reading from,
|
|
|
3858 each at its appropriate position.
|
|
|
3859
|
|
|
3860 Modify *ANNOT by discarding elements as we output them.
|
|
|
3861 The return value is negative in case of system call failure. */
|
|
|
3862
|
|
|
3863 /* 4K should probably be fine. We just need to reduce the number of
|
|
|
3864 function calls to reasonable level. The Lstream stuff itself will
|
|
|
3865 batch to 64K to reduce the number of system calls. */
|
|
|
3866
|
|
|
3867 #define A_WRITE_BATCH_SIZE 4096
|
|
|
3868
|
|
|
3869 static int
|
|
|
3870 a_write (Lisp_Object outstream, Lisp_Object instream, int pos,
|
|
|
3871 Lisp_Object *annot)
|
|
|
3872 {
|
|
|
3873 Lisp_Object tem;
|
|
|
3874 int nextpos;
|
|
|
3875 unsigned char largebuf[A_WRITE_BATCH_SIZE];
|
|
|
3876 Lstream *instr = XLSTREAM (instream);
|
|
|
3877 Lstream *outstr = XLSTREAM (outstream);
|
|
|
3878
|
|
|
3879 while (NILP (*annot) || CONSP (*annot))
|
|
|
3880 {
|
|
|
3881 tem = Fcar_safe (Fcar (*annot));
|
|
|
3882 if (INTP (tem))
|
|
|
3883 nextpos = XINT (tem);
|
|
|
3884 else
|
|
|
3885 nextpos = INT_MAX;
|
|
|
3886 {
|
|
|
3887 while (pos != nextpos)
|
|
|
3888 {
|
|
|
3889 /* Otherwise there is no point to that. Just go in batches. */
|
|
|
3890 int chunk = min (nextpos - pos, A_WRITE_BATCH_SIZE);
|
|
|
3891
|
|
|
3892 chunk = Lstream_read (instr, largebuf, chunk);
|
|
|
3893 if (chunk < 0)
|
|
|
3894 return -1;
|
|
|
3895 if (chunk == 0) /* EOF */
|
|
|
3896 break;
|
|
|
3897 if (Lstream_write (outstr, largebuf, chunk) < chunk)
|
|
|
3898 return -1;
|
|
|
3899 pos += chunk;
|
|
|
3900 }
|
|
|
3901 }
|
|
|
3902 if (pos == nextpos)
|
|
|
3903 {
|
|
|
3904 tem = Fcdr (Fcar (*annot));
|
|
|
3905 if (STRINGP (tem))
|
|
|
3906 {
|
|
|
3907 if (Lstream_write (outstr, string_data (XSTRING (tem)),
|
|
|
3908 string_length (XSTRING (tem))) < 0)
|
|
|
3909 return -1;
|
|
|
3910 }
|
|
|
3911 *annot = Fcdr (*annot);
|
|
|
3912 }
|
|
|
3913 else
|
|
|
3914 return 0;
|
|
|
3915 }
|
|
|
3916 return -1;
|
|
|
3917 }
|
|
|
3918
|
|
|
3919
|
|
|
3920
|
|
|
3921 #if 0
|
|
|
3922 #include <des_crypt.h>
|
|
|
3923
|
|
|
3924 #define CRYPT_BLOCK_SIZE 8 /* bytes */
|
|
|
3925 #define CRYPT_KEY_SIZE 8 /* bytes */
|
|
|
3926
|
|
|
3927 DEFUN ("encrypt-string", Fencrypt_string, Sencrypt_string, 2, 2, 0 /*
|
|
|
3928 Encrypt STRING using KEY.
|
|
|
3929 */ )
|
|
|
3930 (string, key)
|
|
|
3931 Lisp_Object string, key;
|
|
|
3932 {
|
|
|
3933 char *encrypted_string, *raw_key;
|
|
|
3934 int rounded_size, extra, key_size;
|
|
|
3935
|
|
|
3936 /* !!#### May produce bogus data under Mule. */
|
|
|
3937 CHECK_STRING (string);
|
|
|
3938 CHECK_STRING (key);
|
|
|
3939
|
|
|
3940 extra = string_length (XSTRING (string)) % CRYPT_BLOCK_SIZE;
|
|
|
3941 rounded_size = string_length (XSTRING (string)) + extra;
|
|
|
3942 encrypted_string = alloca (rounded_size + 1);
|
|
|
3943 memcpy (encrypted_string, string_data (XSTRING (string)), string_length (XSTRING (string)));
|
|
|
3944 memset (encrypted_string + rounded_size - extra, 0, extra + 1);
|
|
|
3945
|
|
|
3946 if (string_length (XSTRING (key)) > CRYPT_KEY_SIZE)
|
|
|
3947 key_size = CRYPT_KEY_SIZE;
|
|
|
3948 else
|
|
|
3949 key_size = string_length (XSTRING (key));
|
|
|
3950
|
|
|
3951 raw_key = alloca (CRYPT_KEY_SIZE + 1);
|
|
|
3952 memcpy (raw_key, string_data (XSTRING (key)), key_size);
|
|
|
3953 memset (raw_key + key_size, 0, (CRYPT_KEY_SIZE + 1) - key_size);
|
|
|
3954
|
|
|
3955 (void) ecb_crypt (raw_key, encrypted_string, rounded_size,
|
|
|
3956 DES_ENCRYPT | DES_SW);
|
|
|
3957 return make_string (encrypted_string, rounded_size);
|
|
|
3958 }
|
|
|
3959
|
|
|
3960 DEFUN ("decrypt-string", Fdecrypt_string, Sdecrypt_string, 2, 2, 0 /*
|
|
|
3961 Decrypt STRING using KEY.
|
|
|
3962 */ )
|
|
|
3963 (string, key)
|
|
|
3964 Lisp_Object string, key;
|
|
|
3965 {
|
|
|
3966 char *decrypted_string, *raw_key;
|
|
|
3967 int string_size, key_size;
|
|
|
3968
|
|
|
3969 CHECK_STRING (string);
|
|
|
3970 CHECK_STRING (key);
|
|
|
3971
|
|
|
3972 string_size = string_length (XSTRING (string)) + 1;
|
|
|
3973 decrypted_string = alloca (string_size);
|
|
|
3974 memcpy (decrypted_string, string_data (XSTRING (string)), string_size);
|
|
|
3975 decrypted_string[string_size - 1] = '\0';
|
|
|
3976
|
|
|
3977 if (string_length (XSTRING (key)) > CRYPT_KEY_SIZE)
|
|
|
3978 key_size = CRYPT_KEY_SIZE;
|
|
|
3979 else
|
|
|
3980 key_size = string_length (XSTRING (key));
|
|
|
3981
|
|
|
3982 raw_key = alloca (CRYPT_KEY_SIZE + 1);
|
|
|
3983 memcpy (raw_key, string_data (XSTRING (key)), key_size);
|
|
|
3984 memset (raw_key + key_size, 0, (CRYPT_KEY_SIZE + 1) - key_size);
|
|
|
3985
|
|
|
3986
|
|
|
3987 (void) ecb_crypt (raw_key, decrypted_string, string_size,
|
|
|
3988 DES_DECRYPT | DES_SW);
|
|
|
3989 return make_string (decrypted_string, string_size - 1);
|
|
|
3990 }
|
|
|
3991 #endif
|
|
|
3992
|
|
|
3993
|
|
|
3994 DEFUN ("verify-visited-file-modtime", Fverify_visited_file_modtime,
|
|
|
3995 Sverify_visited_file_modtime, 1, 1, 0 /*
|
|
|
3996 Return t if last mod time of BUF's visited file matches what BUF records.
|
|
|
3997 This means that the file has not been changed since it was visited or saved.
|
|
|
3998 */ )
|
|
|
3999 (buf)
|
|
|
4000 Lisp_Object buf;
|
|
|
4001 {
|
|
|
4002 /* This function can GC */
|
|
|
4003 struct buffer *b;
|
|
|
4004 struct stat st;
|
|
|
4005 Lisp_Object handler;
|
|
|
4006
|
|
|
4007 CHECK_BUFFER (buf);
|
|
|
4008 b = XBUFFER (buf);
|
|
|
4009
|
|
|
4010 if (!STRINGP (b->filename)) return Qt;
|
|
|
4011 if (b->modtime == 0) return Qt;
|
|
|
4012
|
|
|
4013 /* If the file name has special constructs in it,
|
|
|
4014 call the corresponding file handler. */
|
|
|
4015 handler = Ffind_file_name_handler (b->filename,
|
|
|
4016 Qverify_visited_file_modtime);
|
|
|
4017 if (!NILP (handler))
|
|
|
4018 return call2 (handler, Qverify_visited_file_modtime, buf);
|
|
|
4019
|
|
|
4020 if (stat ((char *) string_data (XSTRING (b->filename)), &st) < 0)
|
|
|
4021 {
|
|
|
4022 /* If the file doesn't exist now and didn't exist before,
|
|
|
4023 we say that it isn't modified, provided the error is a tame one. */
|
|
|
4024 if (errno == ENOENT || errno == EACCES || errno == ENOTDIR)
|
|
|
4025 st.st_mtime = -1;
|
|
|
4026 else
|
|
|
4027 st.st_mtime = 0;
|
|
|
4028 }
|
|
|
4029 if (st.st_mtime == b->modtime
|
|
|
4030 /* If both are positive, accept them if they are off by one second. */
|
|
|
4031 || (st.st_mtime > 0 && b->modtime > 0
|
|
|
4032 && (st.st_mtime == b->modtime + 1
|
|
|
4033 || st.st_mtime == b->modtime - 1)))
|
|
|
4034 return Qt;
|
|
|
4035 return Qnil;
|
|
|
4036 }
|
|
|
4037
|
|
|
4038 DEFUN ("clear-visited-file-modtime", Fclear_visited_file_modtime,
|
|
|
4039 Sclear_visited_file_modtime, 0, 0, 0 /*
|
|
|
4040 Clear out records of last mod time of visited file.
|
|
|
4041 Next attempt to save will certainly not complain of a discrepancy.
|
|
|
4042 */ )
|
|
|
4043 ()
|
|
|
4044 {
|
|
|
4045 current_buffer->modtime = 0;
|
|
|
4046 return Qnil;
|
|
|
4047 }
|
|
|
4048
|
|
|
4049 DEFUN ("visited-file-modtime", Fvisited_file_modtime,
|
|
|
4050 Svisited_file_modtime, 0, 0, 0 /*
|
|
|
4051 Return the current buffer's recorded visited file modification time.
|
|
|
4052 The value is a list of the form (HIGH . LOW), like the time values
|
|
|
4053 that `file-attributes' returns.
|
|
|
4054 */ )
|
|
|
4055 ()
|
|
|
4056 {
|
|
|
4057 return time_to_lisp ((time_t) current_buffer->modtime);
|
|
|
4058 }
|
|
|
4059
|
|
|
4060 DEFUN ("set-visited-file-modtime", Fset_visited_file_modtime,
|
|
|
4061 Sset_visited_file_modtime, 0, 1, 0 /*
|
|
|
4062 Update buffer's recorded modification time from the visited file's time.
|
|
|
4063 Useful if the buffer was not read from the file normally
|
|
|
4064 or if the file itself has been changed for some known benign reason.
|
|
|
4065 An argument specifies the modification time value to use
|
|
|
4066 (instead of that of the visited file), in the form of a list
|
|
|
4067 (HIGH . LOW) or (HIGH LOW).
|
|
|
4068 */ )
|
|
|
4069 (time_list)
|
|
|
4070 Lisp_Object time_list;
|
|
|
4071 {
|
|
|
4072 /* This function can GC */
|
|
|
4073 if (!NILP (time_list))
|
|
|
4074 {
|
|
|
4075 time_t the_time;
|
|
|
4076 lisp_to_time (time_list, &the_time);
|
|
|
4077 current_buffer->modtime = (int) the_time;
|
|
|
4078 }
|
|
|
4079 else
|
|
|
4080 {
|
|
|
4081 Lisp_Object filename;
|
|
|
4082 struct stat st;
|
|
|
4083 Lisp_Object handler;
|
|
|
4084 struct gcpro gcpro1, gcpro2;
|
|
|
4085
|
|
|
4086 GCPRO2 (filename, time_list);
|
|
|
4087 filename = Fexpand_file_name (current_buffer->filename,
|
|
|
4088 Qnil);
|
|
|
4089
|
|
|
4090 /* If the file name has special constructs in it,
|
|
|
4091 call the corresponding file handler. */
|
|
|
4092 handler = Ffind_file_name_handler (filename, Qset_visited_file_modtime);
|
|
|
4093 UNGCPRO;
|
|
|
4094 if (!NILP (handler))
|
|
|
4095 /* The handler can find the file name the same way we did. */
|
|
|
4096 return call2 (handler, Qset_visited_file_modtime, Qnil);
|
|
|
4097 else if (stat ((char *) string_data (XSTRING (filename)), &st) >= 0)
|
|
|
4098 current_buffer->modtime = st.st_mtime;
|
|
|
4099 }
|
|
|
4100
|
|
|
4101 return Qnil;
|
|
|
4102 }
|
|
|
4103
|
|
|
4104 DEFUN ("set-buffer-modtime", Fset_buffer_modtime,
|
|
|
4105 Sset_buffer_modtime, 1, 2, 0 /*
|
|
|
4106 Update BUFFER's recorded modification time from the associated
|
|
|
4107 file's modtime, if there is an associated file. If not, use the
|
|
|
4108 current time. In either case, if the optional arg TIME is supplied,
|
|
|
4109 it will be used if it is either an integer or a cons of two integers.
|
|
|
4110 */ )
|
|
|
4111 (buf, in_time)
|
|
|
4112 Lisp_Object buf, in_time;
|
|
|
4113 {
|
|
|
4114 /* This function can GC */
|
|
|
4115 unsigned long time_to_use = 0;
|
|
|
4116 int set_time_to_use = 0;
|
|
|
4117 struct stat st;
|
|
|
4118
|
|
|
4119 CHECK_BUFFER (buf);
|
|
|
4120
|
|
|
4121 if (!NILP (in_time))
|
|
|
4122 {
|
|
|
4123 if (INTP (in_time))
|
|
|
4124 {
|
|
|
4125 time_to_use = XINT (in_time);
|
|
|
4126 set_time_to_use = 1;
|
|
|
4127 }
|
|
|
4128 else if ((CONSP (in_time)) &&
|
|
|
4129 (INTP (Fcar (in_time))) &&
|
|
|
4130 (INTP (Fcdr (in_time))))
|
|
|
4131 {
|
|
|
4132 time_t the_time;
|
|
|
4133 lisp_to_time (in_time, &the_time);
|
|
|
4134 time_to_use = (unsigned long) the_time;
|
|
|
4135 set_time_to_use = 1;
|
|
|
4136 }
|
|
|
4137 }
|
|
|
4138
|
|
|
4139 if (!set_time_to_use)
|
|
|
4140 {
|
|
|
4141 Lisp_Object filename = Qnil;
|
|
|
4142 struct gcpro gcpro1, gcpro2;
|
|
|
4143 GCPRO2 (buf, filename);
|
|
|
4144
|
|
|
4145 if (STRINGP (XBUFFER (buf)->filename))
|
|
|
4146 filename = Fexpand_file_name (XBUFFER (buf)->filename,
|
|
|
4147 Qnil);
|
|
|
4148 else
|
|
|
4149 filename = Qnil;
|
|
|
4150
|
|
|
4151 UNGCPRO;
|
|
|
4152
|
|
|
4153 if (!NILP (filename) && !NILP (Ffile_exists_p (filename)))
|
|
|
4154 {
|
|
|
4155 Lisp_Object handler;
|
|
|
4156
|
|
|
4157 /* If the file name has special constructs in it,
|
|
|
4158 call the corresponding file handler. */
|
|
|
4159 GCPRO1 (filename);
|
|
|
4160 handler = Ffind_file_name_handler (filename, Qset_buffer_modtime);
|
|
|
4161 UNGCPRO;
|
|
|
4162 if (!NILP (handler))
|
|
|
4163 /* The handler can find the file name the same way we did. */
|
|
|
4164 return (call2 (handler, Qset_buffer_modtime, Qnil));
|
|
|
4165 else
|
|
|
4166 {
|
|
|
4167 if (stat ((char *) string_data (XSTRING (filename)), &st) >= 0)
|
|
|
4168 time_to_use = st.st_mtime;
|
|
|
4169 else
|
|
|
4170 time_to_use = time ((time_t *) 0);
|
|
|
4171 }
|
|
|
4172 }
|
|
|
4173 else
|
|
|
4174 time_to_use = time ((time_t *) 0);
|
|
|
4175 }
|
|
|
4176
|
|
|
4177 XBUFFER (buf)->modtime = time_to_use;
|
|
|
4178
|
|
|
4179 return Qnil;
|
|
|
4180 }
|
|
|
4181
|
|
|
4182
|
|
|
4183 static Lisp_Object
|
|
|
4184 auto_save_error (Lisp_Object condition_object, Lisp_Object ignored)
|
|
|
4185 {
|
|
|
4186 /* This function can GC */
|
|
|
4187 if (gc_in_progress)
|
|
|
4188 return Qnil;
|
|
|
4189 clear_echo_area (selected_frame (), Qauto_saving, 1);
|
|
|
4190 Fding (Qt, Qauto_save_error, Qnil);
|
|
|
4191 message ("Auto-saving...error for %s",
|
|
|
4192 string_data (XSTRING (current_buffer->name)));
|
|
|
4193 Fsleep_for (make_int (1));
|
|
|
4194 message ("Auto-saving...error!for %s",
|
|
|
4195 string_data (XSTRING (current_buffer->name)));
|
|
|
4196 Fsleep_for (make_int (1));
|
|
|
4197 message ("Auto-saving...error for %s",
|
|
|
4198 string_data (XSTRING (current_buffer->name)));
|
|
|
4199 Fsleep_for (make_int (1));
|
|
|
4200 return Qnil;
|
|
|
4201 }
|
|
|
4202
|
|
|
4203 static Lisp_Object
|
|
|
4204 auto_save_1 (Lisp_Object ignored)
|
|
|
4205 {
|
|
|
4206 /* This function can GC */
|
|
|
4207 struct stat st;
|
|
|
4208 Lisp_Object fn = current_buffer->filename;
|
|
|
4209 Lisp_Object a = current_buffer->auto_save_file_name;
|
|
|
4210
|
|
|
4211 if (!STRINGP (a))
|
|
|
4212 return (Qnil);
|
|
|
4213
|
|
|
4214 /* Get visited file's mode to become the auto save file's mode. */
|
|
|
4215 if (STRINGP (fn) &&
|
|
|
4216 stat ((char *) string_data (XSTRING (fn)), &st) >= 0)
|
|
|
4217 /* But make sure we can overwrite it later! */
|
|
|
4218 auto_save_mode_bits = st.st_mode | 0600;
|
|
|
4219 else
|
|
|
4220 /* default mode for auto-save files of buffers with no file is
|
|
|
4221 readable by owner only. This may annoy some small number of
|
|
|
4222 people, but the alternative removes all privacy from email. */
|
|
|
4223 auto_save_mode_bits = 0600;
|
|
|
4224
|
|
|
4225 return
|
|
|
4226 Fwrite_region_internal (Qnil, Qnil, a, Qnil, Qlambda, Qnil);
|
|
|
4227 }
|
|
|
4228
|
|
|
4229
|
|
|
4230 static Lisp_Object
|
|
|
4231 do_auto_save_unwind (Lisp_Object fd)
|
|
|
4232 {
|
|
|
4233 close (XINT (fd));
|
|
|
4234 return (fd);
|
|
|
4235 }
|
|
|
4236
|
|
|
4237 static Lisp_Object
|
|
|
4238 do_auto_save_unwind_2 (Lisp_Object old_auto_saving)
|
|
|
4239 {
|
|
|
4240 auto_saving = XINT (old_auto_saving);
|
|
|
4241 return Qnil;
|
|
|
4242 }
|
|
|
4243
|
|
|
4244 /* Fdo_auto_save() checks whether a GC is in progress when it is called,
|
|
|
4245 and if so, tries to avoid touching lisp objects.
|
|
|
4246
|
|
|
4247 The only time that Fdo_auto_save() is called while GC is in progress
|
|
|
4248 is if we're going down, as a result of an abort() or a kill signal.
|
|
|
4249 It's fairly important that we generate autosave files in that case!
|
|
|
4250 */
|
|
|
4251
|
|
|
4252 DEFUN ("do-auto-save", Fdo_auto_save, Sdo_auto_save, 0, 2, "" /*
|
|
|
4253 Auto-save all buffers that need it.
|
|
|
4254 This is all buffers that have auto-saving enabled
|
|
|
4255 and are changed since last auto-saved.
|
|
|
4256 Auto-saving writes the buffer into a file
|
|
|
4257 so that your editing is not lost if the system crashes.
|
|
|
4258 This file is not the file you visited; that changes only when you save.
|
|
|
4259 Normally we run the normal hook `auto-save-hook' before saving.
|
|
|
4260
|
|
|
4261 Non-nil first argument means do not print any message if successful.
|
|
|
4262 Non-nil second argument means save only current buffer.
|
|
|
4263 */ )
|
|
|
4264 (no_message, current_only)
|
|
|
4265 Lisp_Object no_message, current_only;
|
|
|
4266 {
|
|
|
4267 /* This function can GC */
|
|
|
4268 struct buffer *old = current_buffer, *b;
|
|
|
4269 Lisp_Object tail, buf;
|
|
|
4270 int auto_saved = 0;
|
|
|
4271 int do_handled_files;
|
|
|
4272 Lisp_Object oquit = Qnil;
|
|
|
4273 Lisp_Object listfile = Qnil;
|
|
|
4274 int listdesc = -1;
|
|
|
4275 int speccount = specpdl_depth ();
|
|
|
4276 struct gcpro gcpro1, gcpro2;
|
|
|
4277
|
|
|
4278 GCPRO2 (oquit, listfile);
|
|
|
4279 check_quit (); /* make Vquit_flag accurate */
|
|
|
4280 /* Ordinarily don't quit within this function,
|
|
|
4281 but don't make it impossible to quit (in case we get hung in I/O). */
|
|
|
4282 oquit = Vquit_flag;
|
|
|
4283 Vquit_flag = Qnil;
|
|
|
4284
|
|
|
4285 /* No further GCPRO needed, because (when it matters) all Lisp_Object
|
|
|
4286 variables point to non-strings reached from Vbuffer_alist. */
|
|
|
4287
|
|
|
4288 if (minibuf_level != 0 || preparing_for_armageddon)
|
|
|
4289 no_message = Qt;
|
|
|
4290
|
|
|
4291 run_hook (Qauto_save_hook);
|
|
|
4292
|
|
|
4293 if (GC_STRINGP (Vauto_save_list_file_name))
|
|
|
4294 listfile = Fexpand_file_name (Vauto_save_list_file_name, Qnil);
|
|
|
4295
|
|
|
4296 /* Make sure auto_saving is reset. */
|
|
|
4297 record_unwind_protect (do_auto_save_unwind_2, make_int (auto_saving));
|
|
|
4298
|
|
|
4299 auto_saving = 1;
|
|
|
4300
|
|
|
4301 /* First, save all files which don't have handlers. If Emacs is
|
|
|
4302 crashing, the handlers may tweak what is causing Emacs to crash
|
|
|
4303 in the first place, and it would be a shame if Emacs failed to
|
|
|
4304 autosave perfectly ordinary files because it couldn't handle some
|
|
|
4305 ange-ftp'd file. */
|
|
|
4306 for (do_handled_files = 0; do_handled_files < 2; do_handled_files++)
|
|
|
4307 {
|
|
|
4308 for (tail = Vbuffer_alist;
|
|
|
4309 GC_CONSP (tail);
|
|
|
4310 tail = XCDR (tail))
|
|
|
4311 {
|
|
|
4312 buf = XCDR (XCAR (tail));
|
|
|
4313 b = XBUFFER (buf);
|
|
|
4314
|
|
|
4315 if (!GC_NILP (current_only)
|
|
|
4316 && b != current_buffer)
|
|
|
4317 continue;
|
|
|
4318
|
|
|
4319 /* Don't auto-save indirect buffers.
|
|
|
4320 The base buffer takes care of it. */
|
|
|
4321 if (b->base_buffer)
|
|
|
4322 continue;
|
|
|
4323
|
|
|
4324 /* Check for auto save enabled
|
|
|
4325 and file changed since last auto save
|
|
|
4326 and file changed since last real save. */
|
|
|
4327 if (GC_STRINGP (b->auto_save_file_name)
|
|
|
4328 && BUF_SAVE_MODIFF (b) < BUF_MODIFF (b)
|
|
|
4329 && b->auto_save_modified < BUF_MODIFF (b)
|
|
|
4330 /* -1 means we've turned off autosaving for a while--see below. */
|
|
|
4331 && XINT (b->save_length) >= 0
|
|
|
4332 && (do_handled_files
|
|
|
4333 || NILP (Ffind_file_name_handler (b->auto_save_file_name,
|
|
|
4334 Qwrite_region))))
|
|
|
4335 {
|
|
|
4336 EMACS_TIME before_time, after_time;
|
|
|
4337
|
|
|
4338 EMACS_GET_TIME (before_time);
|
|
|
4339 /* If we had a failure, don't try again for 20 minutes. */
|
|
|
4340 if (!preparing_for_armageddon
|
|
|
4341 && b->auto_save_failure_time >= 0
|
|
|
4342 && (EMACS_SECS (before_time) - b->auto_save_failure_time <
|
|
|
4343 1200))
|
|
|
4344 continue;
|
|
|
4345
|
|
|
4346 if (!preparing_for_armageddon &&
|
|
|
4347 (XINT (b->save_length) * 10
|
|
|
4348 > (BUF_Z (b) - BUF_BEG (b)) * 13)
|
|
|
4349 /* A short file is likely to change a large fraction;
|
|
|
4350 spare the user annoying messages. */
|
|
|
4351 && XINT (b->save_length) > 5000
|
|
|
4352 /* These messages are frequent and annoying for `*mail*'. */
|
|
|
4353 && !EQ (b->filename, Qnil)
|
|
|
4354 && NILP (no_message)
|
|
|
4355 && disable_auto_save_when_buffer_shrinks)
|
|
|
4356 {
|
|
|
4357 /* It has shrunk too much; turn off auto-saving here.
|
|
|
4358 Unless we're about to crash, in which case auto-save it
|
|
|
4359 anyway.
|
|
|
4360 */
|
|
|
4361 message
|
|
|
4362 ("Buffer %s has shrunk a lot; auto save turned off there",
|
|
|
4363 string_data (XSTRING (b->name)));
|
|
|
4364 /* Turn off auto-saving until there's a real save,
|
|
|
4365 and prevent any more warnings. */
|
|
|
4366 b->save_length = make_int (-1);
|
|
|
4367 if (!gc_in_progress)
|
|
|
4368 Fsleep_for (make_int (1));
|
|
|
4369 continue;
|
|
|
4370 }
|
|
|
4371 set_buffer_internal (b);
|
|
|
4372 if (!auto_saved && GC_NILP (no_message))
|
|
|
4373 {
|
|
|
4374 static CONST unsigned char *msg
|
|
|
4375 = (CONST unsigned char *) "Auto-saving...";
|
|
|
4376 echo_area_message (selected_frame (), msg, Qnil,
|
|
|
4377 0, strlen ((CONST char *) msg),
|
|
|
4378 Qauto_saving);
|
|
|
4379 }
|
|
|
4380
|
|
|
4381 /* Open the auto-save list file, if necessary.
|
|
|
4382 We only do this now so that the file only exists
|
|
|
4383 if we actually auto-saved any files. */
|
|
|
4384 if (!auto_saved && GC_STRINGP (listfile) && listdesc < 0)
|
|
|
4385 {
|
|
|
4386 #ifdef DOS_NT
|
|
|
4387 listdesc = open ((char *)
|
|
|
4388 string_data (XSTRING (listfile)),
|
|
|
4389 O_WRONLY | O_TRUNC | O_CREAT | O_TEXT,
|
|
|
4390 S_IREAD | S_IWRITE);
|
|
|
4391 #else /* not DOS_NT */
|
|
|
4392 listdesc = creat ((char *)
|
|
|
4393 string_data (XSTRING (listfile)),
|
|
|
4394 0666);
|
|
|
4395 #endif /* not DOS_NT */
|
|
|
4396
|
|
|
4397 /* Arrange to close that file whether or not we get
|
|
|
4398 an error. */
|
|
|
4399 if (listdesc >= 0)
|
|
|
4400 record_unwind_protect (do_auto_save_unwind,
|
|
|
4401 make_int (listdesc));
|
|
|
4402 }
|
|
|
4403
|
|
|
4404 /* Record all the buffers that we are auto-saving in
|
|
|
4405 the special file that lists them. For each of
|
|
|
4406 these buffers, record visited name (if any) and
|
|
|
4407 auto save name. */
|
|
|
4408 if (listdesc >= 0)
|
|
|
4409 {
|
|
|
4410 Extbyte *auto_save_file_name_ext;
|
|
|
4411 Extcount auto_save_file_name_ext_len;
|
|
|
4412
|
|
|
4413 GET_STRING_FILENAME_DATA_ALLOCA
|
|
|
4414 (b->auto_save_file_name,
|
|
|
4415 auto_save_file_name_ext,
|
|
|
4416 auto_save_file_name_ext_len);
|
|
|
4417 if (!NILP (b->filename))
|
|
|
4418 {
|
|
|
4419 Extbyte *filename_ext;
|
|
|
4420 Extcount filename_ext_len;
|
|
|
4421
|
|
|
4422 GET_STRING_FILENAME_DATA_ALLOCA (b->filename,
|
|
|
4423 filename_ext,
|
|
|
4424 filename_ext_len);
|
|
|
4425 write (listdesc, filename_ext, filename_ext_len);
|
|
|
4426 }
|
|
|
4427 write (listdesc, "\n", 1);
|
|
|
4428 write (listdesc, auto_save_file_name_ext,
|
|
|
4429 auto_save_file_name_ext_len);
|
|
|
4430 write (listdesc, "\n", 1);
|
|
|
4431 }
|
|
|
4432
|
|
|
4433 condition_case_1 (Qt,
|
|
|
4434 auto_save_1, Qnil,
|
|
|
4435 auto_save_error, Qnil);
|
|
|
4436 auto_saved++;
|
|
|
4437 b->auto_save_modified = BUF_MODIFF (b);
|
|
|
4438 b->save_length = make_int (BUF_SIZE (b));
|
|
|
4439 set_buffer_internal (old);
|
|
|
4440
|
|
|
4441 EMACS_GET_TIME (after_time);
|
|
|
4442 /* If auto-save took more than 60 seconds,
|
|
|
4443 assume it was an NFS failure that got a timeout. */
|
|
|
4444 if (EMACS_SECS (after_time) - EMACS_SECS (before_time) > 60)
|
|
|
4445 b->auto_save_failure_time = EMACS_SECS (after_time);
|
|
|
4446 }
|
|
|
4447 }
|
|
|
4448 }
|
|
|
4449
|
|
|
4450 /* Prevent another auto save till enough input events come in. */
|
|
|
4451 if (auto_saved)
|
|
|
4452 record_auto_save ();
|
|
|
4453
|
|
|
4454 /* If we didn't save anything into the listfile, remove the old
|
|
|
4455 one because nothing needed to be auto-saved. Do this afterwards
|
|
|
4456 rather than before in case we get a crash attempting to autosave
|
|
|
4457 (in that case we'd still want the old one around). */
|
|
|
4458 if (listdesc < 0 && !auto_saved && GC_STRINGP (listfile))
|
|
|
4459 unlink ((char *) string_data (XSTRING (listfile)));
|
|
|
4460
|
|
|
4461 /* Show "...done" only if the echo area would otherwise be empty. */
|
|
|
4462 if (auto_saved && NILP (no_message)
|
|
|
4463 && NILP (clear_echo_area (selected_frame (), Qauto_saving, 0)))
|
|
|
4464 {
|
|
|
4465 static CONST unsigned char *msg
|
|
|
4466 = (CONST unsigned char *)"Auto-saving...done";
|
|
|
4467 echo_area_message (selected_frame (), msg, Qnil, 0,
|
|
|
4468 strlen ((CONST char *) msg), Qauto_saving);
|
|
|
4469 }
|
|
|
4470
|
|
|
4471 Vquit_flag = oquit;
|
|
|
4472
|
|
|
4473 RETURN_UNGCPRO (unbind_to (speccount, Qnil));
|
|
|
4474 }
|
|
|
4475
|
|
|
4476 DEFUN ("set-buffer-auto-saved", Fset_buffer_auto_saved,
|
|
|
4477 Sset_buffer_auto_saved, 0, 0, 0 /*
|
|
|
4478 Mark current buffer as auto-saved with its current text.
|
|
|
4479 No auto-save file will be written until the buffer changes again.
|
|
|
4480 */ )
|
|
|
4481 ()
|
|
|
4482 {
|
|
|
4483 current_buffer->auto_save_modified = BUF_MODIFF (current_buffer);
|
|
|
4484 current_buffer->save_length = make_int (BUF_SIZE (current_buffer));
|
|
|
4485 current_buffer->auto_save_failure_time = -1;
|
|
|
4486 return Qnil;
|
|
|
4487 }
|
|
|
4488
|
|
|
4489 DEFUN ("clear-buffer-auto-save-failure", Fclear_buffer_auto_save_failure,
|
|
|
4490 Sclear_buffer_auto_save_failure, 0, 0, 0 /*
|
|
|
4491 Clear any record of a recent auto-save failure in the current buffer.
|
|
|
4492 */ )
|
|
|
4493 ()
|
|
|
4494 {
|
|
|
4495 current_buffer->auto_save_failure_time = -1;
|
|
|
4496 return Qnil;
|
|
|
4497 }
|
|
|
4498
|
|
|
4499 DEFUN ("recent-auto-save-p", Frecent_auto_save_p, Srecent_auto_save_p,
|
|
|
4500 0, 0, 0 /*
|
|
|
4501 Return t if buffer has been auto-saved since last read in or saved.
|
|
|
4502 */ )
|
|
|
4503 ()
|
|
|
4504 {
|
|
|
4505 return (BUF_SAVE_MODIFF (current_buffer) <
|
|
|
4506 current_buffer->auto_save_modified) ? Qt : Qnil;
|
|
|
4507 }
|
|
|
4508
|
|
|
4509
|
|
|
4510 /************************************************************************/
|
|
|
4511 /* initialization */
|
|
|
4512 /************************************************************************/
|
|
|
4513
|
|
|
4514 void
|
|
|
4515 syms_of_fileio (void)
|
|
|
4516 {
|
|
|
4517 defsymbol (&Qexpand_file_name, "expand-file-name");
|
|
|
4518 defsymbol (&Qfile_truename, "file-truename");
|
|
|
4519 defsymbol (&Qsubstitute_in_file_name, "substitute-in-file-name");
|
|
|
4520 defsymbol (&Qdirectory_file_name, "directory-file-name");
|
|
|
4521 defsymbol (&Qfile_name_directory, "file-name-directory");
|
|
|
4522 defsymbol (&Qfile_name_nondirectory, "file-name-nondirectory");
|
|
|
4523 defsymbol (&Qunhandled_file_name_directory, "unhandled-file-name-directory");
|
|
|
4524 defsymbol (&Qfile_name_as_directory, "file-name-as-directory");
|
|
|
4525 defsymbol (&Qcopy_file, "copy-file");
|
|
|
4526 defsymbol (&Qmake_directory_internal, "make-directory-internal");
|
|
|
4527 defsymbol (&Qdelete_directory, "delete-directory");
|
|
|
4528 defsymbol (&Qdelete_file, "delete-file");
|
|
|
4529 defsymbol (&Qrename_file, "rename-file");
|
|
|
4530 defsymbol (&Qadd_name_to_file, "add-name-to-file");
|
|
|
4531 defsymbol (&Qmake_symbolic_link, "make-symbolic-link");
|
|
|
4532 defsymbol (&Qfile_exists_p, "file-exists-p");
|
|
|
4533 defsymbol (&Qfile_executable_p, "file-executable-p");
|
|
|
4534 defsymbol (&Qfile_readable_p, "file-readable-p");
|
|
|
4535 defsymbol (&Qfile_symlink_p, "file-symlink-p");
|
|
|
4536 defsymbol (&Qfile_writable_p, "file-writable-p");
|
|
|
4537 defsymbol (&Qfile_directory_p, "file-directory-p");
|
|
|
4538 defsymbol (&Qfile_regular_p, "file-regular-p");
|
|
|
4539 defsymbol (&Qfile_accessible_directory_p, "file-accessible-directory-p");
|
|
|
4540 defsymbol (&Qfile_modes, "file-modes");
|
|
|
4541 defsymbol (&Qset_file_modes, "set-file-modes");
|
|
|
4542 defsymbol (&Qfile_newer_than_file_p, "file-newer-than-file-p");
|
|
|
4543 defsymbol (&Qinsert_file_contents, "insert-file-contents");
|
|
|
4544 defsymbol (&Qwrite_region, "write-region");
|
|
|
4545 defsymbol (&Qverify_visited_file_modtime, "verify-visited-file-modtime");
|
|
|
4546 defsymbol (&Qset_visited_file_modtime, "set-visited-file-modtime");
|
|
|
4547 defsymbol (&Qset_buffer_modtime, "set-buffer-modtime");
|
|
|
4548 #ifdef DOS_NT
|
|
|
4549 defsymbol (&Qfind_buffer_file_type, "find-buffer-file-type");
|
|
|
4550 #endif /* DOS_NT */
|
|
|
4551 defsymbol (&Qcar_less_than_car, "car-less-than-car"); /* Vomitous! */
|
|
|
4552
|
|
|
4553 defsymbol (&Qfile_name_handler_alist, "file-name-handler-alist");
|
|
|
4554 defsymbol (&Qauto_save_hook, "auto-save-hook");
|
|
|
4555 defsymbol (&Qauto_save_error, "auto-save-error");
|
|
|
4556 defsymbol (&Qauto_saving, "auto-saving");
|
|
|
4557
|
|
|
4558 defsymbol (&Qformat_decode, "format-decode");
|
|
|
4559 defsymbol (&Qformat_annotate_function, "format-annotate-function");
|
|
|
4560
|
|
|
4561 defsymbol (&Qcompute_buffer_file_truename, "compute-buffer-file-truename");
|
|
|
4562 deferror (&Qfile_error, "file-error", "File error", Qio_error);
|
|
|
4563 deferror (&Qfile_already_exists, "file-already-exists",
|
|
|
4564 "File already exists", Qfile_error);
|
|
|
4565
|
|
|
4566 defsubr (&Sfind_file_name_handler);
|
|
|
4567
|
|
|
4568 defsubr (&Sfile_name_directory);
|
|
|
4569 defsubr (&Sfile_name_nondirectory);
|
|
|
4570 defsubr (&Sunhandled_file_name_directory);
|
|
|
4571 defsubr (&Sfile_name_as_directory);
|
|
|
4572 defsubr (&Sdirectory_file_name);
|
|
|
4573 defsubr (&Smake_temp_name);
|
|
|
4574 defsubr (&Sexpand_file_name);
|
|
|
4575 defsubr (&Sfile_truename);
|
|
|
4576 defsubr (&Ssubstitute_in_file_name);
|
|
|
4577 defsubr (&Scopy_file);
|
|
|
4578 defsubr (&Smake_directory_internal);
|
|
|
4579 defsubr (&Sdelete_directory);
|
|
|
4580 defsubr (&Sdelete_file);
|
|
|
4581 defsubr (&Srename_file);
|
|
|
4582 defsubr (&Sadd_name_to_file);
|
|
|
4583 #ifdef S_IFLNK
|
|
|
4584 defsubr (&Smake_symbolic_link);
|
|
|
4585 #endif /* S_IFLNK */
|
|
|
4586 #ifdef VMS
|
|
|
4587 defsubr (&Sdefine_logical_name);
|
|
|
4588 #endif /* VMS */
|
|
|
4589 #ifdef HPUX_NET
|
|
|
4590 defsubr (&Ssysnetunam);
|
|
|
4591 #endif /* HPUX_NET */
|
|
|
4592 defsubr (&Sfile_name_absolute_p);
|
|
|
4593 defsubr (&Sfile_exists_p);
|
|
|
4594 defsubr (&Sfile_executable_p);
|
|
|
4595 defsubr (&Sfile_readable_p);
|
|
|
4596 defsubr (&Sfile_writable_p);
|
|
|
4597 defsubr (&Sfile_symlink_p);
|
|
|
4598 defsubr (&Sfile_directory_p);
|
|
|
4599 defsubr (&Sfile_accessible_directory_p);
|
|
|
4600 defsubr (&Sfile_regular_p);
|
|
|
4601 defsubr (&Sfile_modes);
|
|
|
4602 defsubr (&Sset_file_modes);
|
|
|
4603 defsubr (&Sset_default_file_modes);
|
|
|
4604 defsubr (&Sdefault_file_modes);
|
|
|
4605 defsubr (&Sunix_sync);
|
|
|
4606 defsubr (&Sfile_newer_than_file_p);
|
|
|
4607 defsubr (&Sinsert_file_contents_internal);
|
|
|
4608 defsubr (&Swrite_region_internal);
|
|
|
4609 defsubr (&Scar_less_than_car); /* Vomitous! */
|
|
|
4610 defsubr (&Scdr_less_than_cdr); /* Yeah oh yeah bucko .... */
|
|
|
4611 #if 0
|
|
|
4612 defsubr (&Sencrypt_string);
|
|
|
4613 defsubr (&Sdecrypt_string);
|
|
|
4614 #endif
|
|
|
4615 defsubr (&Sverify_visited_file_modtime);
|
|
|
4616 defsubr (&Sclear_visited_file_modtime);
|
|
|
4617 defsubr (&Svisited_file_modtime);
|
|
|
4618 defsubr (&Sset_visited_file_modtime);
|
|
|
4619 defsubr (&Sset_buffer_modtime);
|
|
|
4620
|
|
|
4621 defsubr (&Sdo_auto_save);
|
|
|
4622 defsubr (&Sset_buffer_auto_saved);
|
|
|
4623 defsubr (&Sclear_buffer_auto_save_failure);
|
|
|
4624 defsubr (&Srecent_auto_save_p);
|
|
|
4625 }
|
|
|
4626
|
|
|
4627 void
|
|
|
4628 vars_of_fileio (void)
|
|
|
4629 {
|
|
|
4630 DEFVAR_LISP ("auto-save-file-format", &Vauto_save_file_format /*
|
|
|
4631 *Format in which to write auto-save files.
|
|
|
4632 Should be a list of symbols naming formats that are defined in `format-alist'.
|
|
|
4633 If it is t, which is the default, auto-save files are written in the
|
|
|
4634 same format as a regular save would use.
|
|
|
4635 */ );
|
|
|
4636 Vauto_save_file_format = Qt;
|
|
|
4637
|
|
|
4638 DEFVAR_BOOL ("vms-stmlf-recfm", &vms_stmlf_recfm /*
|
|
|
4639 *Non-nil means write new files with record format `stmlf'.
|
|
|
4640 nil means use format `var'. This variable is meaningful only on VMS.
|
|
|
4641 */ );
|
|
|
4642 vms_stmlf_recfm = 0;
|
|
|
4643
|
|
|
4644 DEFVAR_LISP ("file-name-handler-alist", &Vfile_name_handler_alist /*
|
|
|
4645 *Alist of elements (REGEXP . HANDLER) for file names handled specially.
|
|
|
4646 If a file name matches REGEXP, then all I/O on that file is done by calling
|
|
|
4647 HANDLER.
|
|
|
4648
|
|
|
4649 The first argument given to HANDLER is the name of the I/O primitive
|
|
|
4650 to be handled; the remaining arguments are the arguments that were
|
|
|
4651 passed to that primitive. For example, if you do
|
|
|
4652 (file-exists-p FILENAME)
|
|
|
4653 and FILENAME is handled by HANDLER, then HANDLER is called like this:
|
|
|
4654 (funcall HANDLER 'file-exists-p FILENAME)
|
|
|
4655 The function `find-file-name-handler' checks this list for a handler
|
|
|
4656 for its argument.
|
|
|
4657 */ );
|
|
|
4658 Vfile_name_handler_alist = Qnil;
|
|
|
4659
|
|
|
4660 DEFVAR_LISP ("after-insert-file-functions", &Vafter_insert_file_functions /*
|
|
|
4661 A list of functions to be called at the end of `insert-file-contents'.
|
|
|
4662 Each is passed one argument, the number of bytes inserted. It should return
|
|
|
4663 the new byte count, and leave point the same. If `insert-file-contents' is
|
|
|
4664 intercepted by a handler from `file-name-handler-alist', that handler is
|
|
|
4665 responsible for calling the after-insert-file-functions if appropriate.
|
|
|
4666 */ );
|
|
|
4667 Vafter_insert_file_functions = Qnil;
|
|
|
4668
|
|
|
4669 DEFVAR_LISP ("write-region-annotate-functions",
|
|
|
4670 &Vwrite_region_annotate_functions /*
|
|
|
4671 A list of functions to be called at the start of `write-region'.
|
|
|
4672 Each is passed two arguments, START and END as for `write-region'.
|
|
|
4673 It should return a list of pairs (POSITION . STRING) of strings to be
|
|
|
4674 effectively inserted at the specified positions of the file being written
|
|
|
4675 \(1 means to insert before the first byte written). The POSITIONs must be
|
|
|
4676 sorted into increasing order. If there are several functions in the list,
|
|
|
4677 the several lists are merged destructively.
|
|
|
4678 */ );
|
|
|
4679 Vwrite_region_annotate_functions = Qnil;
|
|
|
4680
|
|
|
4681 DEFVAR_LISP ("write-region-annotations-so-far",
|
|
|
4682 &Vwrite_region_annotations_so_far /*
|
|
|
4683 When an annotation function is called, this holds the previous annotations.
|
|
|
4684 These are the annotations made by other annotation functions
|
|
|
4685 that were already called. See also `write-region-annotate-functions'.
|
|
|
4686 */ );
|
|
|
4687 Vwrite_region_annotations_so_far = Qnil;
|
|
|
4688
|
|
|
4689 DEFVAR_LISP ("inhibit-file-name-handlers", &Vinhibit_file_name_handlers /*
|
|
|
4690 A list of file name handlers that temporarily should not be used.
|
|
|
4691 This applies only to the operation `inhibit-file-name-operation'.
|
|
|
4692 */ );
|
|
|
4693 Vinhibit_file_name_handlers = Qnil;
|
|
|
4694
|
|
|
4695 DEFVAR_LISP ("inhibit-file-name-operation", &Vinhibit_file_name_operation /*
|
|
|
4696 The operation for which `inhibit-file-name-handlers' is applicable.
|
|
|
4697 */ );
|
|
|
4698 Vinhibit_file_name_operation = Qnil;
|
|
|
4699
|
|
|
4700 DEFVAR_LISP ("auto-save-list-file-name", &Vauto_save_list_file_name /*
|
|
|
4701 File name in which we write a list of all auto save file names.
|
|
|
4702 */ );
|
|
|
4703 Vauto_save_list_file_name = Qnil;
|
|
|
4704
|
|
|
4705 DEFVAR_BOOL ("disable-auto-save-when-buffer-shrinks",
|
|
|
4706 &disable_auto_save_when_buffer_shrinks /*
|
|
|
4707 If non-nil, auto-saving is disabled when a buffer shrinks too much.
|
|
|
4708 This is to prevent you from losing your edits if you accidentally
|
|
|
4709 delete a large chunk of the buffer and don't notice it until too late.
|
|
|
4710 Saving the buffer normally turns auto-save back on.
|
|
|
4711 */ );
|
|
|
4712 disable_auto_save_when_buffer_shrinks = 1;
|
|
|
4713 }
|
