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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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70
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35 #ifdef MULE
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36 #include "mule-coding.h"
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37 #endif
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0
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38
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2
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39 #ifdef HAVE_LIBGEN_H /* Must come before sysfile.h */
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40 #include <libgen.h>
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41 #endif
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0
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42 #include "sysfile.h"
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43 #include "sysproc.h"
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44 #include "syspwd.h"
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45 #include "systime.h"
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46 #include "sysdir.h"
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47
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48 #ifdef HPUX
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49 #include <netio.h>
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50 #ifdef HPUX_PRE_8_0
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51 #include <errnet.h>
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52 #endif
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53 #endif
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54
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55 /* Nonzero during writing of auto-save files */
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56 static int auto_saving;
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57
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58 /* Set by auto_save_1 to mode of original file so Fwrite_region_internal
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59 will create a new file with the same mode as the original */
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60 static int auto_save_mode_bits;
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61
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62 /* Alist of elements (REGEXP . HANDLER) for file names
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63 whose I/O is done with a special handler. */
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64 Lisp_Object Vfile_name_handler_alist;
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65
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66 /* Format for auto-save files */
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67 Lisp_Object Vauto_save_file_format;
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68
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69 /* Lisp functions for translating file formats */
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70 Lisp_Object Qformat_decode, Qformat_annotate_function;
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71
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72 /* Functions to be called to process text properties in inserted file. */
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73 Lisp_Object Vafter_insert_file_functions;
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74
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75 /* Functions to be called to create text property annotations for file. */
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76 Lisp_Object Vwrite_region_annotate_functions;
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77
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78 /* During build_annotations, each time an annotation function is called,
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79 this holds the annotations made by the previous functions. */
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80 Lisp_Object Vwrite_region_annotations_so_far;
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81
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82 /* File name in which we write a list of all our auto save files. */
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83 Lisp_Object Vauto_save_list_file_name;
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84
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85 /* On VMS, nonzero means write new files with record format stmlf.
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86 Zero means use var format. */
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87 int vms_stmlf_recfm;
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88
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89 int disable_auto_save_when_buffer_shrinks;
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90
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91 Lisp_Object Qfile_name_handler_alist;
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92
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93 /* These variables describe handlers that have "already" had a chance
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94 to handle the current operation.
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95
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96 Vinhibit_file_name_handlers is a list of file name handlers.
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97 Vinhibit_file_name_operation is the operation being handled.
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98 If we try to handle that operation, we ignore those handlers. */
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99
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100 static Lisp_Object Vinhibit_file_name_handlers;
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101 static Lisp_Object Vinhibit_file_name_operation;
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102
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103 Lisp_Object Qfile_error, Qfile_already_exists;
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104
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105 Lisp_Object Qauto_save_hook;
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106 Lisp_Object Qauto_save_error;
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107 Lisp_Object Qauto_saving;
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108
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109 Lisp_Object Qcar_less_than_car;
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110
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111 Lisp_Object Qcompute_buffer_file_truename;
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112
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113 /* signal a file error when errno contains a meaningful value. */
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114
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115 DOESNT_RETURN
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116 report_file_error (CONST char *string, Lisp_Object data)
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117 {
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118 /* mrb: #### Needs to be fixed at a lower level; errstring needs to
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119 be MULEized. The following at least prevents a crash... */
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120 Lisp_Object errstring = build_ext_string (strerror (errno), FORMAT_BINARY);
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121
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122 /* System error messages are capitalized. Downcase the initial
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123 unless it is followed by a slash. */
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70
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124 if (string_char (XSTRING (errstring), 1) != '/')
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0
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125 set_string_char (XSTRING (errstring), 0,
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126 DOWNCASE (current_buffer,
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127 string_char (XSTRING (errstring), 0)));
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128
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129 signal_error (Qfile_error,
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130 Fcons (build_translated_string (string),
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131 Fcons (errstring, data)));
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132 }
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133
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134 void
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135 maybe_report_file_error (CONST char *string, Lisp_Object data,
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136 Lisp_Object class, Error_behavior errb)
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137 {
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138 Lisp_Object errstring;
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139
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140 /* Optimization: */
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141 if (ERRB_EQ (errb, ERROR_ME_NOT))
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142 return;
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143
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144 errstring = build_string (strerror (errno));
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145
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146 /* System error messages are capitalized. Downcase the initial
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147 unless it is followed by a slash. */
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148 if (string_char (XSTRING (errstring), 1) != '/')
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149 set_string_char (XSTRING (errstring), 0,
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150 DOWNCASE (current_buffer,
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151 string_char (XSTRING (errstring), 0)));
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152
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153 maybe_signal_error (Qfile_error,
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154 Fcons (build_translated_string (string),
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155 Fcons (errstring, data)),
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156 class, errb);
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157 }
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158
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159 /* signal a file error when errno does not contain a meaningful value. */
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160
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161 DOESNT_RETURN
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162 signal_file_error (CONST char *string, Lisp_Object data)
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163 {
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164 signal_error (Qfile_error,
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165 list2 (build_translated_string (string), data));
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166 }
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167
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168 void
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169 maybe_signal_file_error (CONST char *string, Lisp_Object data,
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170 Lisp_Object class, Error_behavior errb)
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171 {
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172 /* Optimization: */
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173 if (ERRB_EQ (errb, ERROR_ME_NOT))
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174 return;
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175 maybe_signal_error (Qfile_error,
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176 list2 (build_translated_string (string), data),
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177 class, errb);
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178 }
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179
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180 DOESNT_RETURN
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181 signal_double_file_error (CONST char *string1, CONST char *string2,
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182 Lisp_Object data)
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183 {
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184 signal_error (Qfile_error,
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185 list3 (build_translated_string (string1),
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186 build_translated_string (string2),
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187 data));
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188 }
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189
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190 void
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191 maybe_signal_double_file_error (CONST char *string1, CONST char *string2,
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192 Lisp_Object data, Lisp_Object class,
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193 Error_behavior errb)
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194 {
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195 /* Optimization: */
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196 if (ERRB_EQ (errb, ERROR_ME_NOT))
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197 return;
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198 maybe_signal_error (Qfile_error,
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199 list3 (build_translated_string (string1),
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200 build_translated_string (string2),
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201 data),
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202 class, errb);
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203 }
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204
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205 DOESNT_RETURN
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206 signal_double_file_error_2 (CONST char *string1, CONST char *string2,
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207 Lisp_Object data1, Lisp_Object data2)
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208 {
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209 signal_error (Qfile_error,
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210 list4 (build_translated_string (string1),
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211 build_translated_string (string2),
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212 data1, data2));
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213 }
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214
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215 void
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216 maybe_signal_double_file_error_2 (CONST char *string1, CONST char *string2,
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217 Lisp_Object data1, Lisp_Object data2,
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218 Lisp_Object class, Error_behavior errb)
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219 {
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220 /* Optimization: */
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221 if (ERRB_EQ (errb, ERROR_ME_NOT))
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222 return;
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223 maybe_signal_error (Qfile_error,
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224 list4 (build_translated_string (string1),
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225 build_translated_string (string2),
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226 data1, data2),
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227 class, errb);
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228 }
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229
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230 static Lisp_Object
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231 close_file_unwind (Lisp_Object fd)
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232 {
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233 if (CONSP (fd))
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234 {
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235 if (INTP (XCAR (fd)))
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236 close (XINT (XCAR (fd)));
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237
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238 free_cons (XCONS (fd));
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239 }
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240 else
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241 close (XINT (fd));
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242
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243 return Qnil;
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244 }
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245
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246 static Lisp_Object
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247 close_stream_unwind (Lisp_Object stream)
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248 {
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249 Lstream_close (XLSTREAM (stream));
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250 return Qnil;
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251 }
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252
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253 /* Restore point, having saved it as a marker. */
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254
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255 static Lisp_Object
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256 restore_point_unwind (Lisp_Object point_marker)
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257 {
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258 BUF_SET_PT (current_buffer, marker_position (point_marker));
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259 return (Fset_marker (point_marker, Qnil, Qnil));
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260 }
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261
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262 /* Versions of read() and write() that allow quitting out of the actual
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263 I/O. We don't use immediate_quit (i.e. direct longjmp() out of the
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264 signal handler) because that's way too losing.
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265
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266 (#### Actually, longjmp()ing out of the signal handler may not be
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267 as losing as I thought. See sys_do_signal() in sysdep.c.)
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268
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269 Solaris include files declare the return value as ssize_t.
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270 Is that standard? */
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271 int
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272 read_allowing_quit (int fildes, void *buf, unsigned int nbyte)
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273 {
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274 int nread;
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275 QUIT;
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276
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277 nread = sys_read_1 (fildes, buf, nbyte, 1);
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278 return nread;
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279 }
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280
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281 int
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282 write_allowing_quit (int fildes, CONST void *buf, unsigned int nbyte)
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283 {
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284 int nread;
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285
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286 QUIT;
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287 nread = sys_write_1 (fildes, buf, nbyte, 1);
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288 return nread;
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289 }
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290
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291
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292 Lisp_Object Qexpand_file_name;
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293 Lisp_Object Qfile_truename;
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294 Lisp_Object Qsubstitute_in_file_name;
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295 Lisp_Object Qdirectory_file_name;
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296 Lisp_Object Qfile_name_directory;
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297 Lisp_Object Qfile_name_nondirectory;
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298 Lisp_Object Qunhandled_file_name_directory;
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299 Lisp_Object Qfile_name_as_directory;
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300 Lisp_Object Qcopy_file;
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301 Lisp_Object Qmake_directory_internal;
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302 Lisp_Object Qdelete_directory;
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303 Lisp_Object Qdelete_file;
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304 Lisp_Object Qrename_file;
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305 Lisp_Object Qadd_name_to_file;
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306 Lisp_Object Qmake_symbolic_link;
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307 Lisp_Object Qfile_exists_p;
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308 Lisp_Object Qfile_executable_p;
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309 Lisp_Object Qfile_readable_p;
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310 Lisp_Object Qfile_symlink_p;
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311 Lisp_Object Qfile_writable_p;
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312 Lisp_Object Qfile_directory_p;
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313 Lisp_Object Qfile_regular_p;
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314 Lisp_Object Qfile_accessible_directory_p;
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315 Lisp_Object Qfile_modes;
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316 Lisp_Object Qset_file_modes;
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317 Lisp_Object Qfile_newer_than_file_p;
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318 Lisp_Object Qinsert_file_contents;
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319 Lisp_Object Qwrite_region;
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320 Lisp_Object Qverify_visited_file_modtime;
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321 Lisp_Object Qset_visited_file_modtime;
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322 Lisp_Object Qset_buffer_modtime;
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323
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324 /* If FILENAME is handled specially on account of its syntax,
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325 return its handler function. Otherwise, return nil. */
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326
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20
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327 DEFUN ("find-file-name-handler", Ffind_file_name_handler, 1, 2, 0, /*
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0
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328 Return FILENAME's handler function for OPERATION, if it has one.
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329 Otherwise, return nil.
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330 A file name is handled if one of the regular expressions in
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331 `file-name-handler-alist' matches it.
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332
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333 If OPERATION equals `inhibit-file-name-operation', then we ignore
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334 any handlers that are members of `inhibit-file-name-handlers',
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335 but we still do run any other handlers. This lets handlers
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336 use the standard functions without calling themselves recursively.
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20
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337 */
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338 (filename, operation))
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0
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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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70
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374 /* This function can GC */
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0
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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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70
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384 /* This function can GC */
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0
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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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20
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391 DEFUN ("file-name-directory", Ffile_name_directory, 1, 1, 0, /*
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0
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392 Return the directory component in file name NAME.
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393 Return nil if NAME does not include a directory.
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394 Otherwise return a directory spec.
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395 Given a Unix syntax file name, returns a string ending in slash;
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396 on VMS, perhaps instead a string ending in `:', `]' or `>'.
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20
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397 */
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398 (file))
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0
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399 {
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70
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400 /* This function can GC */
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0
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401 Bufbyte *beg;
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402 Bufbyte *p;
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403 Lisp_Object handler;
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404
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405 CHECK_STRING (file);
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406
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407 /* If the file name has special constructs in it,
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408 call the corresponding file handler. */
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|
|
409 handler = Ffind_file_name_handler (file, Qfile_name_directory);
|
|
|
410 if (!NILP (handler))
|
|
70
|
411 {
|
|
|
412 Lisp_Object retval = call2 (handler, Qfile_name_directory,
|
|
|
413 file);
|
|
|
414
|
|
|
415 if (!NILP (retval))
|
|
|
416 CHECK_STRING (retval);
|
|
|
417 return retval;
|
|
|
418 }
|
|
0
|
419
|
|
|
420 #ifdef FILE_SYSTEM_CASE
|
|
|
421 file = FILE_SYSTEM_CASE (file);
|
|
|
422 #endif
|
|
16
|
423 beg = XSTRING_DATA (file);
|
|
|
424 p = beg + XSTRING_LENGTH (file);
|
|
0
|
425
|
|
|
426 while (p != beg && !IS_ANY_SEP (p[-1])
|
|
|
427 #ifdef VMS
|
|
|
428 && p[-1] != ':' && p[-1] != ']' && p[-1] != '>'
|
|
|
429 #endif /* VMS */
|
|
|
430 ) p--;
|
|
|
431
|
|
|
432 if (p == beg)
|
|
|
433 return Qnil;
|
|
|
434 #ifdef DOS_NT
|
|
|
435 /* Expansion of "c:" to drive and default directory. */
|
|
|
436 /* (NT does the right thing.) */
|
|
|
437 if (p == beg + 2 && beg[1] == ':')
|
|
|
438 {
|
|
|
439 int drive = (*beg) - 'a';
|
|
|
440 /* MAXPATHLEN+1 is guaranteed to be enough space for getdefdir. */
|
|
|
441 Bufbyte *res = (Bufbyte *) alloca (MAXPATHLEN + 5);
|
|
|
442 unsigned char *res1;
|
|
|
443 #ifdef WINDOWSNT
|
|
|
444 res1 = res;
|
|
|
445 /* The NT version places the drive letter at the beginning already. */
|
|
|
446 #else /* not WINDOWSNT */
|
|
|
447 /* On MSDOG we must put the drive letter in by hand. */
|
|
|
448 res1 = res + 2;
|
|
|
449 #endif /* not WINDOWSNT */
|
|
|
450 if (getdefdir (drive + 1, res))
|
|
|
451 {
|
|
|
452 #ifdef MSDOS
|
|
|
453 res[0] = drive + 'a';
|
|
|
454 res[1] = ':';
|
|
|
455 #endif /* MSDOS */
|
|
|
456 if (IS_DIRECTORY_SEP (res[strlen ((char *) res) - 1]))
|
|
|
457 strcat ((char *) res, "/");
|
|
|
458 beg = res;
|
|
|
459 p = beg + strlen ((char *) beg);
|
|
|
460 }
|
|
|
461 }
|
|
|
462 #endif /* DOS_NT */
|
|
|
463 return make_string (beg, p - beg);
|
|
|
464 }
|
|
|
465
|
|
20
|
466 DEFUN ("file-name-nondirectory", Ffile_name_nondirectory, 1, 1, 0, /*
|
|
0
|
467 Return file name NAME sans its directory.
|
|
|
468 For example, in a Unix-syntax file name,
|
|
|
469 this is everything after the last slash,
|
|
|
470 or the entire name if it contains no slash.
|
|
20
|
471 */
|
|
|
472 (file))
|
|
0
|
473 {
|
|
70
|
474 /* This function can GC */
|
|
0
|
475 Bufbyte *beg, *p, *end;
|
|
|
476 Lisp_Object handler;
|
|
|
477
|
|
|
478 CHECK_STRING (file);
|
|
|
479
|
|
|
480 /* If the file name has special constructs in it,
|
|
|
481 call the corresponding file handler. */
|
|
|
482 handler = Ffind_file_name_handler (file, Qfile_name_nondirectory);
|
|
|
483 if (!NILP (handler))
|
|
|
484 return (call2_check_string (handler, Qfile_name_nondirectory,
|
|
|
485 file));
|
|
|
486
|
|
16
|
487 beg = XSTRING_DATA (file);
|
|
|
488 end = p = beg + XSTRING_LENGTH (file);
|
|
0
|
489
|
|
|
490 while (p != beg && !IS_ANY_SEP (p[-1])
|
|
|
491 #ifdef VMS
|
|
|
492 && p[-1] != ':' && p[-1] != ']' && p[-1] != '>'
|
|
|
493 #endif /* VMS */
|
|
|
494 ) p--;
|
|
|
495
|
|
|
496 return make_string (p, end - p);
|
|
|
497 }
|
|
|
498
|
|
20
|
499 DEFUN ("unhandled-file-name-directory", Funhandled_file_name_directory, 1, 1, 0, /*
|
|
0
|
500 Return a directly usable directory name somehow associated with FILENAME.
|
|
|
501 A `directly usable' directory name is one that may be used without the
|
|
|
502 intervention of any file handler.
|
|
|
503 If FILENAME is a directly usable file itself, return
|
|
|
504 (file-name-directory FILENAME).
|
|
|
505 The `call-process' and `start-process' functions use this function to
|
|
|
506 get a current directory to run processes in.
|
|
20
|
507 */
|
|
70
|
508 (filename))
|
|
0
|
509 {
|
|
70
|
510 /* This function can GC */
|
|
0
|
511 Lisp_Object handler;
|
|
|
512
|
|
|
513 /* If the file name has special constructs in it,
|
|
|
514 call the corresponding file handler. */
|
|
|
515 handler = Ffind_file_name_handler (filename, Qunhandled_file_name_directory);
|
|
|
516 if (!NILP (handler))
|
|
|
517 return call2 (handler, Qunhandled_file_name_directory,
|
|
|
518 filename);
|
|
|
519
|
|
|
520 return Ffile_name_directory (filename);
|
|
|
521 }
|
|
|
522
|
|
|
523
|
|
|
524 static char *
|
|
|
525 file_name_as_directory (char *out, char *in)
|
|
|
526 {
|
|
|
527 int size = strlen (in) - 1;
|
|
|
528
|
|
|
529 strcpy (out, in);
|
|
|
530
|
|
|
531 #ifdef VMS
|
|
|
532 /* Is it already a directory string? */
|
|
|
533 if (in[size] == ':' || in[size] == ']' || in[size] == '>')
|
|
|
534 return out;
|
|
|
535 /* Is it a VMS directory file name? If so, hack VMS syntax. */
|
|
|
536 else if (! strchr (in, '/')
|
|
|
537 && ((size > 3 && ! strcmp (&in[size - 3], ".DIR"))
|
|
|
538 || (size > 3 && ! strcmp (&in[size - 3], ".dir"))
|
|
|
539 || (size > 5 && (! strncmp (&in[size - 5], ".DIR", 4)
|
|
|
540 || ! strncmp (&in[size - 5], ".dir", 4))
|
|
|
541 && (in[size - 1] == '.' || in[size - 1] == ';')
|
|
|
542 && in[size] == '1')))
|
|
|
543 {
|
|
|
544 char *p, *dot;
|
|
|
545 char brack;
|
|
|
546
|
|
|
547 /* x.dir -> [.x]
|
|
|
548 dir:x.dir --> dir:[x]
|
|
|
549 dir:[x]y.dir --> dir:[x.y] */
|
|
|
550 p = in + size;
|
|
|
551 while (p != in && *p != ':' && *p != '>' && *p != ']') p--;
|
|
|
552 if (p != in)
|
|
|
553 {
|
|
|
554 strncpy (out, in, p - in);
|
|
|
555 out[p - in] = '\0';
|
|
|
556 if (*p == ':')
|
|
|
557 {
|
|
|
558 brack = ']';
|
|
|
559 strcat (out, ":[");
|
|
|
560 }
|
|
|
561 else
|
|
|
562 {
|
|
|
563 brack = *p;
|
|
|
564 strcat (out, ".");
|
|
|
565 }
|
|
|
566 p++;
|
|
|
567 }
|
|
|
568 else
|
|
|
569 {
|
|
|
570 brack = ']';
|
|
|
571 strcpy (out, "[.");
|
|
|
572 }
|
|
|
573 dot = strchr (p, '.');
|
|
|
574 if (dot)
|
|
|
575 {
|
|
|
576 /* blindly remove any extension */
|
|
|
577 size = strlen (out) + (dot - p);
|
|
|
578 strncat (out, p, dot - p);
|
|
|
579 }
|
|
|
580 else
|
|
|
581 {
|
|
|
582 strcat (out, p);
|
|
|
583 size = strlen (out);
|
|
|
584 }
|
|
|
585 out[size++] = brack;
|
|
|
586 out[size] = '\0';
|
|
|
587 }
|
|
|
588 #else /* not VMS */
|
|
|
589 /* For Unix syntax, Append a slash if necessary */
|
|
|
590 if (!IS_ANY_SEP (out[size]))
|
|
|
591 {
|
|
|
592 out[size + 1] = DIRECTORY_SEP;
|
|
|
593 out[size + 2] = '\0';
|
|
|
594 }
|
|
|
595 #endif /* not VMS */
|
|
|
596 return out;
|
|
|
597 }
|
|
|
598
|
|
20
|
599 DEFUN ("file-name-as-directory", Ffile_name_as_directory, 1, 1, 0, /*
|
|
0
|
600 Return a string representing file FILENAME interpreted as a directory.
|
|
|
601 This operation exists because a directory is also a file, but its name as
|
|
|
602 a directory is different from its name as a file.
|
|
|
603 The result can be used as the value of `default-directory'
|
|
|
604 or passed as second argument to `expand-file-name'.
|
|
|
605 For a Unix-syntax file name, just appends a slash.
|
|
|
606 On VMS, converts \"[X]FOO.DIR\" to \"[X.FOO]\", etc.
|
|
20
|
607 */
|
|
|
608 (file))
|
|
0
|
609 {
|
|
70
|
610 /* This function can GC */
|
|
0
|
611 char *buf;
|
|
|
612 Lisp_Object handler;
|
|
|
613
|
|
|
614 CHECK_STRING (file);
|
|
|
615
|
|
|
616 /* If the file name has special constructs in it,
|
|
|
617 call the corresponding file handler. */
|
|
|
618 handler = Ffind_file_name_handler (file, Qfile_name_as_directory);
|
|
|
619 if (!NILP (handler))
|
|
|
620 return (call2_check_string (handler, Qfile_name_as_directory,
|
|
|
621 file));
|
|
|
622
|
|
16
|
623 buf = (char *) alloca (XSTRING_LENGTH (file) + 10);
|
|
0
|
624 return build_string (file_name_as_directory
|
|
16
|
625 (buf, (char *) XSTRING_DATA (file)));
|
|
0
|
626 }
|
|
|
627
|
|
|
628 /*
|
|
|
629 * Convert from directory name to filename.
|
|
|
630 * On VMS:
|
|
|
631 * xyzzy:[mukesh.emacs] => xyzzy:[mukesh]emacs.dir.1
|
|
|
632 * xyzzy:[mukesh] => xyzzy:[000000]mukesh.dir.1
|
|
|
633 * On UNIX, it's simple: just make sure there is a terminating /
|
|
|
634
|
|
|
635 * Value is nonzero if the string output is different from the input.
|
|
|
636 */
|
|
|
637
|
|
|
638 static int
|
|
|
639 directory_file_name (CONST char *src, char *dst)
|
|
|
640 {
|
|
|
641 long slen;
|
|
|
642 #ifdef VMS
|
|
|
643 long rlen;
|
|
|
644 char * ptr, * rptr;
|
|
|
645 char bracket;
|
|
|
646 struct FAB fab = cc$rms_fab;
|
|
|
647 struct NAM nam = cc$rms_nam;
|
|
|
648 char esa[NAM$C_MAXRSS];
|
|
|
649 #endif /* VMS */
|
|
|
650
|
|
|
651 slen = strlen (src);
|
|
|
652 #ifdef VMS
|
|
|
653 if (! strchr (src, '/')
|
|
|
654 && (src[slen - 1] == ']'
|
|
|
655 || src[slen - 1] == ':'
|
|
|
656 || src[slen - 1] == '>'))
|
|
|
657 {
|
|
|
658 /* VMS style - convert [x.y.z] to [x.y]z, [x] to [000000]x */
|
|
|
659 fab.fab$l_fna = src;
|
|
|
660 fab.fab$b_fns = slen;
|
|
|
661 fab.fab$l_nam = &nam;
|
|
|
662 fab.fab$l_fop = FAB$M_NAM;
|
|
|
663
|
|
|
664 nam.nam$l_esa = esa;
|
|
|
665 nam.nam$b_ess = sizeof esa;
|
|
|
666 nam.nam$b_nop |= NAM$M_SYNCHK;
|
|
|
667
|
|
|
668 /* We call SYS$PARSE to handle such things as [--] for us. */
|
|
|
669 if (SYS$PARSE(&fab, 0, 0) == RMS$_NORMAL)
|
|
|
670 {
|
|
|
671 slen = nam.nam$b_esl;
|
|
|
672 if (esa[slen - 1] == ';' && esa[slen - 2] == '.')
|
|
|
673 slen -= 2;
|
|
|
674 esa[slen] = '\0';
|
|
|
675 src = esa;
|
|
|
676 }
|
|
|
677 if (src[slen - 1] != ']' && src[slen - 1] != '>')
|
|
|
678 {
|
|
|
679 /* what about when we have logical_name:???? */
|
|
|
680 if (src[slen - 1] == ':')
|
|
|
681 { /* Xlate logical name and see what we get */
|
|
|
682 ptr = strcpy (dst, src); /* upper case for getenv */
|
|
|
683 while (*ptr)
|
|
|
684 {
|
|
|
685 *ptr = toupper ((unsigned char) *ptr);
|
|
|
686 ptr++;
|
|
|
687 }
|
|
|
688 dst[slen - 1] = 0; /* remove colon */
|
|
|
689 if (!(src = egetenv (dst)))
|
|
|
690 return 0;
|
|
|
691 /* should we jump to the beginning of this procedure?
|
|
|
692 Good points: allows us to use logical names that xlate
|
|
|
693 to Unix names,
|
|
|
694 Bad points: can be a problem if we just translated to a device
|
|
|
695 name...
|
|
|
696 For now, I'll punt and always expect VMS names, and hope for
|
|
|
697 the best! */
|
|
|
698 slen = strlen (src);
|
|
|
699 if (src[slen - 1] != ']' && src[slen - 1] != '>')
|
|
|
700 { /* no recursion here! */
|
|
|
701 strcpy (dst, src);
|
|
|
702 return 0;
|
|
|
703 }
|
|
|
704 }
|
|
|
705 else
|
|
|
706 { /* not a directory spec */
|
|
|
707 strcpy (dst, src);
|
|
|
708 return 0;
|
|
|
709 }
|
|
|
710 }
|
|
|
711 bracket = src[slen - 1];
|
|
|
712
|
|
|
713 /* If bracket is ']' or '>', bracket - 2 is the corresponding
|
|
|
714 opening bracket. */
|
|
|
715 ptr = strchr (src, bracket - 2);
|
|
|
716 if (ptr == 0)
|
|
|
717 { /* no opening bracket */
|
|
|
718 strcpy (dst, src);
|
|
|
719 return 0;
|
|
|
720 }
|
|
|
721 if (!(rptr = strrchr (src, '.')))
|
|
|
722 rptr = ptr;
|
|
|
723 slen = rptr - src;
|
|
|
724 strncpy (dst, src, slen);
|
|
|
725 dst[slen] = '\0';
|
|
|
726 if (*rptr == '.')
|
|
|
727 {
|
|
|
728 dst[slen++] = bracket;
|
|
|
729 dst[slen] = '\0';
|
|
|
730 }
|
|
|
731 else
|
|
|
732 {
|
|
|
733 /* If we have the top-level of a rooted directory (i.e. xx:[000000]),
|
|
|
734 then translate the device and recurse. */
|
|
|
735 if (dst[slen - 1] == ':'
|
|
|
736 && dst[slen - 2] != ':' /* skip decnet nodes */
|
|
|
737 && strcmp(src + slen, "[000000]") == 0)
|
|
|
738 {
|
|
|
739 dst[slen - 1] = '\0';
|
|
|
740 if ((ptr = egetenv (dst))
|
|
|
741 && (rlen = strlen (ptr) - 1) > 0
|
|
|
742 && (ptr[rlen] == ']' || ptr[rlen] == '>')
|
|
|
743 && ptr[rlen - 1] == '.')
|
|
|
744 {
|
|
|
745 char * buf = (char *) alloca (strlen (ptr) + 1);
|
|
|
746 strcpy (buf, ptr);
|
|
|
747 buf[rlen - 1] = ']';
|
|
|
748 buf[rlen] = '\0';
|
|
|
749 return directory_file_name (buf, dst);
|
|
|
750 }
|
|
|
751 else
|
|
|
752 dst[slen - 1] = ':';
|
|
|
753 }
|
|
|
754 strcat (dst, "[000000]");
|
|
|
755 slen += 8;
|
|
|
756 }
|
|
|
757 rptr++;
|
|
|
758 rlen = strlen (rptr) - 1;
|
|
|
759 strncat (dst, rptr, rlen);
|
|
|
760 dst[slen + rlen] = '\0';
|
|
|
761 strcat (dst, ".DIR.1");
|
|
|
762 return 1;
|
|
|
763 }
|
|
|
764 #endif /* VMS */
|
|
|
765 /* Process as Unix format: just remove any final slash.
|
|
|
766 But leave "/" unchanged; do not change it to "". */
|
|
|
767 strcpy (dst, src);
|
|
|
768 #ifdef APOLLO
|
|
|
769 /* Handle // as root for apollo's. */
|
|
|
770 if ((slen > 2 && dst[slen - 1] == '/')
|
|
|
771 || (slen > 1 && dst[0] != '/' && dst[slen - 1] == '/'))
|
|
|
772 dst[slen - 1] = 0;
|
|
|
773 #else
|
|
|
774 if (slen > 1
|
|
|
775 && IS_DIRECTORY_SEP (dst[slen - 1])
|
|
|
776 #ifdef DOS_NT
|
|
|
777 && !IS_ANY_SEP (dst[slen - 2])
|
|
|
778 #endif
|
|
|
779 )
|
|
|
780 dst[slen - 1] = 0;
|
|
|
781 #endif
|
|
|
782 return 1;
|
|
|
783 }
|
|
|
784
|
|
20
|
785 DEFUN ("directory-file-name", Fdirectory_file_name, 1, 1, 0, /*
|
|
0
|
786 Return the file name of the directory named DIR.
|
|
|
787 This is the name of the file that holds the data for the directory DIR.
|
|
|
788 This operation exists because a directory is also a file, but its name as
|
|
|
789 a directory is different from its name as a file.
|
|
|
790 In Unix-syntax, this function just removes the final slash.
|
|
|
791 On VMS, given a VMS-syntax directory name such as \"[X.Y]\",
|
|
|
792 it returns a file name such as \"[X]Y.DIR.1\".
|
|
20
|
793 */
|
|
|
794 (directory))
|
|
0
|
795 {
|
|
70
|
796 /* This function can GC */
|
|
0
|
797 char *buf;
|
|
|
798 Lisp_Object handler;
|
|
|
799
|
|
|
800 CHECK_STRING (directory);
|
|
|
801
|
|
|
802 #if 0 /* #### WTF? */
|
|
|
803 if (NILP (directory))
|
|
|
804 return Qnil;
|
|
|
805 #endif
|
|
|
806
|
|
|
807 /* If the file name has special constructs in it,
|
|
|
808 call the corresponding file handler. */
|
|
|
809 handler = Ffind_file_name_handler (directory, Qdirectory_file_name);
|
|
|
810 if (!NILP (handler))
|
|
|
811 return (call2_check_string (handler, Qdirectory_file_name,
|
|
|
812 directory));
|
|
|
813 #ifdef VMS
|
|
|
814 /* 20 extra chars is insufficient for VMS, since we might perform a
|
|
|
815 logical name translation. an equivalence string can be up to 255
|
|
|
816 chars long, so grab that much extra space... - sss */
|
|
16
|
817 buf = (char *) alloca (XSTRING_LENGTH (directory) + 20 + 255);
|
|
0
|
818 #else
|
|
16
|
819 buf = (char *) alloca (XSTRING_LENGTH (directory) + 20);
|
|
0
|
820 #endif
|
|
16
|
821 directory_file_name ((char *) XSTRING_DATA (directory), buf);
|
|
0
|
822 return build_string (buf);
|
|
|
823 }
|
|
|
824
|
|
20
|
825 DEFUN ("make-temp-name", Fmake_temp_name, 1, 1, 0, /*
|
|
0
|
826 Generate temporary file name (string) starting with PREFIX (a string).
|
|
|
827 The Emacs process number forms part of the result,
|
|
|
828 so there is no danger of generating a name being used by another process.
|
|
20
|
829 */
|
|
|
830 (prefix))
|
|
0
|
831 {
|
|
|
832 CONST char suffix[] = "XXXXXX";
|
|
|
833 Bufbyte *data;
|
|
|
834 Bytecount len;
|
|
|
835 Lisp_Object val;
|
|
|
836
|
|
|
837 CHECK_STRING (prefix);
|
|
16
|
838 len = XSTRING_LENGTH (prefix);
|
|
0
|
839 val = make_uninit_string (len + countof (suffix) - 1);
|
|
16
|
840 data = XSTRING_DATA (val);
|
|
|
841 memcpy (data, XSTRING_DATA (prefix), len);
|
|
0
|
842 memcpy (data + len, suffix, countof (suffix));
|
|
|
843 /* !!#### does mktemp() Mule-encapsulate? */
|
|
|
844 mktemp ((char *) data);
|
|
|
845
|
|
|
846 return val;
|
|
|
847 }
|
|
|
848
|
|
20
|
849 DEFUN ("expand-file-name", Fexpand_file_name, 1, 2, 0, /*
|
|
0
|
850 Convert FILENAME to absolute, and canonicalize it.
|
|
|
851 Second arg DEFAULT is directory to start with if FILENAME is relative
|
|
|
852 (does not start with slash); if DEFAULT is nil or missing,
|
|
|
853 the current buffer's value of default-directory is used.
|
|
|
854 Path components that are `.' are removed, and
|
|
|
855 path components followed by `..' are removed, along with the `..' itself;
|
|
|
856 note that these simplifications are done without checking the resulting
|
|
|
857 paths in the file system.
|
|
|
858 An initial `~/' expands to your home directory.
|
|
|
859 An initial `~USER/' expands to USER's home directory.
|
|
|
860 See also the function `substitute-in-file-name'.
|
|
20
|
861 */
|
|
|
862 (name, defalt))
|
|
0
|
863 {
|
|
70
|
864 /* This function can GC */
|
|
0
|
865 Bufbyte *nm;
|
|
|
866
|
|
|
867 Bufbyte *newdir, *p, *o;
|
|
|
868 int tlen;
|
|
|
869 Bufbyte *target;
|
|
|
870 struct passwd *pw;
|
|
|
871 #ifdef VMS
|
|
|
872 Bufbyte * colon = 0;
|
|
|
873 Bufbyte * close = 0;
|
|
|
874 Bufbyte * slash = 0;
|
|
|
875 Bufbyte * brack = 0;
|
|
|
876 int lbrack = 0, rbrack = 0;
|
|
|
877 int dots = 0;
|
|
|
878 #endif /* VMS */
|
|
|
879 #ifdef DOS_NT
|
|
|
880 /* Demacs 1.1.2 91/10/20 Manabu Higashida */
|
|
|
881 int drive = -1;
|
|
|
882 int relpath = 0;
|
|
|
883 Bufbyte *tmp, *defdir;
|
|
|
884 #endif /* DOS_NT */
|
|
|
885 Lisp_Object handler;
|
|
|
886
|
|
|
887 CHECK_STRING (name);
|
|
|
888
|
|
|
889 /* If the file name has special constructs in it,
|
|
|
890 call the corresponding file handler. */
|
|
|
891 handler = Ffind_file_name_handler (name, Qexpand_file_name);
|
|
|
892 if (!NILP (handler))
|
|
|
893 return (call3_check_string (handler, Qexpand_file_name, name,
|
|
|
894 defalt));
|
|
|
895
|
|
|
896 /* Use the buffer's default-directory if DEFALT is omitted. */
|
|
|
897 if (NILP (defalt))
|
|
|
898 defalt = current_buffer->directory;
|
|
|
899 if (NILP (defalt)) /* this should be a meaningful error */
|
|
|
900 {
|
|
|
901 /* #### If we had a minibuffer-only frame up then current_buffer
|
|
|
902 is likely to not have a directory setting. We should
|
|
|
903 probably redo things to make sure that current_buffer stays
|
|
|
904 set to something sensible. */
|
|
|
905 if (!preparing_for_armageddon)
|
|
|
906 signal_simple_error ("default-directory is not set",
|
|
|
907 make_buffer (current_buffer));
|
|
|
908 }
|
|
|
909 else
|
|
|
910 CHECK_STRING (defalt);
|
|
|
911
|
|
|
912 if (!NILP (defalt))
|
|
|
913 {
|
|
|
914 handler = Ffind_file_name_handler (defalt, Qexpand_file_name);
|
|
|
915 if (!NILP (handler))
|
|
|
916 return call3 (handler, Qexpand_file_name, name, defalt);
|
|
|
917 }
|
|
|
918
|
|
|
919 /* Make sure DEFALT is properly expanded.
|
|
|
920 It would be better to do this down below where we actually use
|
|
|
921 defalt. Unfortunately, calling Fexpand_file_name recursively
|
|
|
922 could invoke GC, and the strings might be relocated. This would
|
|
|
923 be annoying because we have pointers into strings lying around
|
|
|
924 that would need adjusting, and people would add new pointers to
|
|
|
925 the code and forget to adjust them, resulting in intermittent bugs.
|
|
|
926 Putting this call here avoids all that crud.
|
|
|
927
|
|
|
928 The EQ test avoids infinite recursion. */
|
|
70
|
929 if (! NILP (defalt) && !EQ (defalt, name)
|
|
0
|
930 /* This saves time in a common case. */
|
|
16
|
931 && ! (XSTRING_LENGTH (defalt) >= 3
|
|
82
|
932 && IS_DIRECTORY_SEP (XSTRING_BYTE (defalt, 0))
|
|
|
933 && IS_DEVICE_SEP (XSTRING_BYTE (defalt, 1))))
|
|
0
|
934 {
|
|
|
935 struct gcpro gcpro1;
|
|
|
936
|
|
70
|
937 GCPRO1 (name);
|
|
0
|
938 defalt = Fexpand_file_name (defalt, Qnil);
|
|
|
939 UNGCPRO;
|
|
|
940 }
|
|
|
941
|
|
|
942 #ifdef VMS
|
|
|
943 /* Filenames on VMS are always upper case. */
|
|
|
944 name = Fupcase (name, Fcurrent_buffer ());
|
|
|
945 #endif
|
|
|
946 #ifdef FILE_SYSTEM_CASE
|
|
|
947 name = FILE_SYSTEM_CASE (name);
|
|
|
948 #endif
|
|
|
949
|
|
16
|
950 nm = XSTRING_DATA (name);
|
|
0
|
951
|
|
|
952 #ifdef MSDOS
|
|
|
953 /* First map all backslashes to slashes. */
|
|
|
954 dostounix_filename (nm = strcpy (alloca (strlen (nm) + 1), nm));
|
|
|
955 #endif
|
|
|
956
|
|
|
957 #ifdef DOS_NT
|
|
|
958 /* Now strip drive name. */
|
|
|
959 {
|
|
|
960 Bufbyte *colon = strrchr (nm, ':');
|
|
|
961 if (colon)
|
|
|
962 if (nm == colon)
|
|
|
963 nm++;
|
|
|
964 else
|
|
|
965 {
|
|
|
966 drive = colon[-1];
|
|
|
967 nm = colon + 1;
|
|
|
968 if (!IS_DIRECTORY_SEP (*nm))
|
|
|
969 {
|
|
|
970 defdir = alloca (MAXPATHLEN + 1);
|
|
|
971 relpath = getdefdir (tolower (drive) - 'a' + 1, defdir);
|
|
|
972 }
|
|
|
973 }
|
|
|
974 }
|
|
|
975 #endif /* DOS_NT */
|
|
|
976
|
|
|
977 /* Handle // and /~ in middle of file name
|
|
|
978 by discarding everything through the first / of that sequence. */
|
|
|
979 p = nm;
|
|
|
980 while (*p)
|
|
|
981 {
|
|
|
982 /* Since we know the path is absolute, we can assume that each
|
|
|
983 element starts with a "/". */
|
|
|
984
|
|
|
985 /* "//" anywhere isn't necessarily hairy; we just start afresh
|
|
|
986 with the second slash. */
|
|
|
987 if (IS_DIRECTORY_SEP (p[0]) && IS_DIRECTORY_SEP (p[1])
|
|
|
988 #if defined (APOLLO) || defined (WINDOWSNT)
|
|
|
989 /* // at start of filename is meaningful on Apollo
|
|
|
990 and WindowsNT systems */
|
|
|
991 && nm != p
|
|
|
992 #endif /* APOLLO || WINDOWSNT */
|
|
|
993 )
|
|
|
994 nm = p + 1;
|
|
|
995
|
|
|
996 /* "~" is hairy as the start of any path element. */
|
|
|
997 if (IS_DIRECTORY_SEP (p[0]) && p[1] == '~')
|
|
|
998 nm = p + 1;
|
|
|
999
|
|
|
1000 p++;
|
|
|
1001 }
|
|
|
1002
|
|
|
1003 /* If nm is absolute, flush ...// and detect /./ and /../.
|
|
|
1004 If no /./ or /../ we can return right away. */
|
|
|
1005 if (
|
|
|
1006 IS_DIRECTORY_SEP (nm[0])
|
|
|
1007 #ifdef VMS
|
|
|
1008 || strchr (nm, ':')
|
|
|
1009 #endif /* VMS */
|
|
|
1010 )
|
|
|
1011 {
|
|
|
1012 /* If it turns out that the filename we want to return is just a
|
|
|
1013 suffix of FILENAME, we don't need to go through and edit
|
|
|
1014 things; we just need to construct a new string using data
|
|
|
1015 starting at the middle of FILENAME. If we set lose to a
|
|
|
1016 non-zero value, that means we've discovered that we can't do
|
|
|
1017 that cool trick. */
|
|
|
1018 int lose = 0;
|
|
|
1019
|
|
|
1020 p = nm;
|
|
|
1021 while (*p)
|
|
|
1022 {
|
|
|
1023 /* Since we know the path is absolute, we can assume that each
|
|
|
1024 element starts with a "/". */
|
|
|
1025
|
|
|
1026 /* "." and ".." are hairy. */
|
|
|
1027 if (IS_DIRECTORY_SEP (p[0])
|
|
|
1028 && p[1] == '.'
|
|
|
1029 && (IS_DIRECTORY_SEP (p[2])
|
|
|
1030 || p[2] == 0
|
|
|
1031 || (p[2] == '.' && (IS_DIRECTORY_SEP (p[3])
|
|
|
1032 || p[3] == 0))))
|
|
|
1033 lose = 1;
|
|
|
1034 #ifdef VMS
|
|
|
1035 if (p[0] == '\\')
|
|
|
1036 lose = 1;
|
|
|
1037 if (p[0] == '/') {
|
|
|
1038 /* if dev:[dir]/, move nm to / */
|
|
|
1039 if (!slash && p > nm && (brack || colon)) {
|
|
|
1040 nm = (brack ? brack + 1 : colon + 1);
|
|
|
1041 lbrack = rbrack = 0;
|
|
|
1042 brack = 0;
|
|
|
1043 colon = 0;
|
|
|
1044 }
|
|
|
1045 slash = p;
|
|
|
1046 }
|
|
|
1047 if (p[0] == '-')
|
|
|
1048 #ifndef VMS4_4
|
|
|
1049 /* VMS pre V4.4,convert '-'s in filenames. */
|
|
|
1050 if (lbrack == rbrack)
|
|
|
1051 {
|
|
|
1052 if (dots < 2) /* this is to allow negative version numbers */
|
|
|
1053 p[0] = '_';
|
|
|
1054 }
|
|
|
1055 else
|
|
|
1056 #endif /* VMS4_4 */
|
|
|
1057 if (lbrack > rbrack &&
|
|
|
1058 ((p[-1] == '.' || p[-1] == '[' || p[-1] == '<') &&
|
|
|
1059 (p[1] == '.' || p[1] == ']' || p[1] == '>')))
|
|
|
1060 lose = 1;
|
|
|
1061 #ifndef VMS4_4
|
|
|
1062 else
|
|
|
1063 p[0] = '_';
|
|
|
1064 #endif /* VMS4_4 */
|
|
|
1065 /* count open brackets, reset close bracket pointer */
|
|
|
1066 if (p[0] == '[' || p[0] == '<')
|
|
|
1067 lbrack++, brack = 0;
|
|
|
1068 /* count close brackets, set close bracket pointer */
|
|
|
1069 if (p[0] == ']' || p[0] == '>')
|
|
|
1070 rbrack++, brack = p;
|
|
|
1071 /* detect ][ or >< */
|
|
|
1072 if ((p[0] == ']' || p[0] == '>') && (p[1] == '[' || p[1] == '<'))
|
|
|
1073 lose = 1;
|
|
|
1074 if ((p[0] == ':' || p[0] == ']' || p[0] == '>') && p[1] == '~')
|
|
|
1075 nm = p + 1, lose = 1;
|
|
|
1076 if (p[0] == ':' && (colon || slash))
|
|
|
1077 /* if dev1:[dir]dev2:, move nm to dev2: */
|
|
|
1078 if (brack)
|
|
|
1079 {
|
|
|
1080 nm = brack + 1;
|
|
|
1081 brack = 0;
|
|
|
1082 }
|
|
|
1083 /* if /pathname/dev:, move nm to dev: */
|
|
|
1084 else if (slash)
|
|
|
1085 nm = slash + 1;
|
|
|
1086 /* if node::dev:, move colon following dev */
|
|
|
1087 else if (colon && colon[-1] == ':')
|
|
|
1088 colon = p;
|
|
|
1089 /* if dev1:dev2:, move nm to dev2: */
|
|
|
1090 else if (colon && colon[-1] != ':')
|
|
|
1091 {
|
|
|
1092 nm = colon + 1;
|
|
|
1093 colon = 0;
|
|
|
1094 }
|
|
|
1095 if (p[0] == ':' && !colon)
|
|
|
1096 {
|
|
|
1097 if (p[1] == ':')
|
|
|
1098 p++;
|
|
|
1099 colon = p;
|
|
|
1100 }
|
|
|
1101 if (lbrack == rbrack)
|
|
|
1102 if (p[0] == ';')
|
|
|
1103 dots = 2;
|
|
|
1104 else if (p[0] == '.')
|
|
|
1105 dots++;
|
|
|
1106 #endif /* VMS */
|
|
|
1107 p++;
|
|
|
1108 }
|
|
|
1109 if (!lose)
|
|
|
1110 {
|
|
|
1111 #ifdef VMS
|
|
|
1112 if (strchr (nm, '/'))
|
|
|
1113 return build_string (sys_translate_unix (nm));
|
|
|
1114 #endif /* VMS */
|
|
|
1115 #ifndef DOS_NT
|
|
16
|
1116 if (nm == XSTRING_DATA (name))
|
|
0
|
1117 return name;
|
|
|
1118 return build_string ((char *) nm);
|
|
|
1119 #endif /* not DOS_NT */
|
|
|
1120 }
|
|
|
1121 }
|
|
|
1122
|
|
|
1123 /* Now determine directory to start with and put it in newdir */
|
|
|
1124
|
|
|
1125 newdir = 0;
|
|
|
1126
|
|
|
1127 if (nm[0] == '~') /* prefix ~ */
|
|
|
1128 {
|
|
|
1129 if (IS_DIRECTORY_SEP (nm[1])
|
|
|
1130 #ifdef VMS
|
|
|
1131 || nm[1] == ':'
|
|
|
1132 #endif /* VMS */
|
|
|
1133 || nm[1] == 0) /* ~ by itself */
|
|
|
1134 {
|
|
|
1135 if (!(newdir = (Bufbyte *) egetenv ("HOME")))
|
|
|
1136 newdir = (Bufbyte *) "";
|
|
|
1137 #ifdef DOS_NT
|
|
|
1138 /* Problem when expanding "~\" if HOME is not on current drive.
|
|
|
1139 Ulrich Leodolter, Wed Jan 11 10:20:35 1995 */
|
|
|
1140 if (newdir[1] == ':')
|
|
|
1141 drive = newdir[0];
|
|
|
1142 dostounix_filename (newdir);
|
|
|
1143 #endif
|
|
|
1144 nm++;
|
|
|
1145 #ifdef VMS
|
|
|
1146 nm++; /* Don't leave the slash in nm. */
|
|
|
1147 #endif /* VMS */
|
|
|
1148 }
|
|
|
1149 else /* ~user/filename */
|
|
|
1150 {
|
|
|
1151 for (p = nm; *p && (!IS_DIRECTORY_SEP (*p)
|
|
|
1152 #ifdef VMS
|
|
|
1153 && *p != ':'
|
|
|
1154 #endif /* VMS */
|
|
|
1155 ); p++);
|
|
|
1156 o = (Bufbyte *) alloca (p - nm + 1);
|
|
|
1157 memcpy (o, (char *) nm, p - nm);
|
|
|
1158 o [p - nm] = 0;
|
|
|
1159
|
|
|
1160 #ifdef WINDOWSNT
|
|
|
1161 newdir = (unsigned char *) egetenv ("HOME");
|
|
|
1162 dostounix_filename (newdir);
|
|
|
1163 #else /* not WINDOWSNT */
|
|
|
1164 /* Jamie reports that getpwnam() can get wedged by SIGIO/SIGALARM
|
|
|
1165 occurring in it. (It can call select()). */
|
|
|
1166 slow_down_interrupts ();
|
|
|
1167 pw = (struct passwd *) getpwnam ((char *) o + 1);
|
|
|
1168 speed_up_interrupts ();
|
|
|
1169 if (pw)
|
|
|
1170 {
|
|
|
1171 newdir = (Bufbyte *) pw -> pw_dir;
|
|
|
1172 #ifdef VMS
|
|
|
1173 nm = p + 1; /* skip the terminator */
|
|
|
1174 #else
|
|
|
1175 nm = p;
|
|
|
1176 #endif /* VMS */
|
|
|
1177 }
|
|
|
1178 #endif /* not WINDOWSNT */
|
|
|
1179
|
|
|
1180 /* If we don't find a user of that name, leave the name
|
|
|
1181 unchanged; don't move nm forward to p. */
|
|
|
1182 }
|
|
|
1183 }
|
|
|
1184
|
|
|
1185 if (!IS_ANY_SEP (nm[0])
|
|
|
1186 #ifdef VMS
|
|
|
1187 && !strchr (nm, ':')
|
|
|
1188 #endif /* not VMS */
|
|
|
1189 #ifdef DOS_NT
|
|
|
1190 && drive == -1
|
|
|
1191 #endif /* DOS_NT */
|
|
|
1192 && !newdir
|
|
|
1193 && STRINGP (defalt))
|
|
|
1194 {
|
|
16
|
1195 newdir = XSTRING_DATA (defalt);
|
|
0
|
1196 }
|
|
|
1197
|
|
|
1198 #ifdef DOS_NT
|
|
|
1199 if (newdir == 0 && relpath)
|
|
|
1200 newdir = defdir;
|
|
|
1201 #endif /* DOS_NT */
|
|
|
1202 if (newdir != 0)
|
|
|
1203 {
|
|
|
1204 /* Get rid of any slash at the end of newdir. */
|
|
|
1205 int length = strlen ((char *) newdir);
|
|
|
1206 /* Adding `length > 1 &&' makes ~ expand into / when homedir
|
|
|
1207 is the root dir. People disagree about whether that is right.
|
|
|
1208 Anyway, we can't take the risk of this change now. */
|
|
|
1209 #ifdef DOS_NT
|
|
|
1210 if (newdir[1] != ':' && length > 1)
|
|
|
1211 #endif
|
|
|
1212 if (IS_DIRECTORY_SEP (newdir[length - 1]))
|
|
|
1213 {
|
|
|
1214 Bufbyte *temp = (Bufbyte *) alloca (length);
|
|
|
1215 memcpy (temp, newdir, length - 1);
|
|
|
1216 temp[length - 1] = 0;
|
|
|
1217 newdir = temp;
|
|
|
1218 }
|
|
|
1219 tlen = length + 1;
|
|
|
1220 }
|
|
|
1221 else
|
|
|
1222 tlen = 0;
|
|
|
1223
|
|
|
1224 /* Now concatenate the directory and name to new space in the stack frame */
|
|
|
1225 tlen += strlen ((char *) nm) + 1;
|
|
|
1226 #ifdef DOS_NT
|
|
|
1227 /* Add reserved space for drive name. (The Microsoft x86 compiler
|
|
|
1228 produces incorrect code if the following two lines are combined.) */
|
|
|
1229 target = (Bufbyte *) alloca (tlen + 2);
|
|
|
1230 target += 2;
|
|
|
1231 #else /* not DOS_NT */
|
|
|
1232 target = (Bufbyte *) alloca (tlen);
|
|
|
1233 #endif /* not DOS_NT */
|
|
|
1234 *target = 0;
|
|
|
1235
|
|
|
1236 if (newdir)
|
|
|
1237 {
|
|
|
1238 #ifndef VMS
|
|
|
1239 if (nm[0] == 0 || IS_DIRECTORY_SEP (nm[0]))
|
|
|
1240 strcpy ((char *) target, (char *) newdir);
|
|
|
1241 else
|
|
|
1242 #endif
|
|
|
1243 file_name_as_directory ((char *) target, (char *) newdir);
|
|
|
1244 }
|
|
|
1245
|
|
|
1246 strcat ((char *) target, (char *) nm);
|
|
|
1247 #ifdef VMS
|
|
|
1248 if (strchr (target, '/'))
|
|
|
1249 strcpy (target, sys_translate_unix (target));
|
|
|
1250 #endif /* VMS */
|
|
|
1251
|
|
|
1252 /* Now canonicalize by removing /. and /foo/.. if they appear. */
|
|
|
1253
|
|
|
1254 p = target;
|
|
|
1255 o = target;
|
|
|
1256
|
|
|
1257 while (*p)
|
|
|
1258 {
|
|
|
1259 #ifdef VMS
|
|
|
1260 if (*p != ']' && *p != '>' && *p != '-')
|
|
|
1261 {
|
|
|
1262 if (*p == '\\')
|
|
|
1263 p++;
|
|
|
1264 *o++ = *p++;
|
|
|
1265 }
|
|
|
1266 else if ((p[0] == ']' || p[0] == '>') && p[0] == p[1] + 2)
|
|
|
1267 /* brackets are offset from each other by 2 */
|
|
|
1268 {
|
|
|
1269 p += 2;
|
|
|
1270 if (*p != '.' && *p != '-' && o[-1] != '.')
|
|
|
1271 /* convert [foo][bar] to [bar] */
|
|
|
1272 while (o[-1] != '[' && o[-1] != '<')
|
|
|
1273 o--;
|
|
|
1274 else if (*p == '-' && *o != '.')
|
|
|
1275 *--p = '.';
|
|
|
1276 }
|
|
|
1277 else if (p[0] == '-' && o[-1] == '.' &&
|
|
|
1278 (p[1] == '.' || p[1] == ']' || p[1] == '>'))
|
|
|
1279 /* flush .foo.- ; leave - if stopped by '[' or '<' */
|
|
|
1280 {
|
|
|
1281 do
|
|
|
1282 o--;
|
|
|
1283 while (o[-1] != '.' && o[-1] != '[' && o[-1] != '<');
|
|
|
1284 if (p[1] == '.') /* foo.-.bar ==> bar. */
|
|
|
1285 p += 2;
|
|
|
1286 else if (o[-1] == '.') /* '.foo.-]' ==> ']' */
|
|
|
1287 p++, o--;
|
|
|
1288 /* else [foo.-] ==> [-] */
|
|
|
1289 }
|
|
|
1290 else
|
|
|
1291 {
|
|
|
1292 #ifndef VMS4_4
|
|
|
1293 if (*p == '-' &&
|
|
|
1294 o[-1] != '[' && o[-1] != '<' && o[-1] != '.' &&
|
|
|
1295 p[1] != ']' && p[1] != '>' && p[1] != '.')
|
|
|
1296 *p = '_';
|
|
|
1297 #endif /* VMS4_4 */
|
|
|
1298 *o++ = *p++;
|
|
|
1299 }
|
|
|
1300 #else /* not VMS */
|
|
|
1301 if (!IS_DIRECTORY_SEP (*p))
|
|
|
1302 {
|
|
|
1303 *o++ = *p++;
|
|
|
1304 }
|
|
|
1305 else if (IS_DIRECTORY_SEP (p[0]) && IS_DIRECTORY_SEP (p[1])
|
|
|
1306 #if defined (APOLLO) || defined (WINDOWSNT)
|
|
|
1307 /* // at start of filename is meaningful in Apollo
|
|
|
1308 and WindowsNT systems */
|
|
|
1309 && o != target
|
|
|
1310 #endif /* APOLLO */
|
|
|
1311 )
|
|
|
1312 {
|
|
|
1313 o = target;
|
|
|
1314 p++;
|
|
|
1315 }
|
|
|
1316 else if (IS_DIRECTORY_SEP (p[0])
|
|
|
1317 && p[1] == '.'
|
|
|
1318 && (IS_DIRECTORY_SEP (p[2])
|
|
|
1319 || p[2] == 0))
|
|
|
1320 {
|
|
|
1321 /* If "/." is the entire filename, keep the "/". Otherwise,
|
|
|
1322 just delete the whole "/.". */
|
|
|
1323 if (o == target && p[2] == '\0')
|
|
|
1324 *o++ = *p;
|
|
|
1325 p += 2;
|
|
|
1326 }
|
|
|
1327 else if (IS_DIRECTORY_SEP (p[0]) && p[1] == '.' && p[2] == '.'
|
|
|
1328 /* `/../' is the "superroot" on certain file systems. */
|
|
|
1329 && o != target
|
|
|
1330 && (IS_DIRECTORY_SEP (p[3]) || p[3] == 0))
|
|
|
1331 {
|
|
|
1332 while (o != target && (--o) && !IS_DIRECTORY_SEP (*o))
|
|
|
1333 ;
|
|
|
1334 #if defined (APOLLO) || defined (WINDOWSNT)
|
|
|
1335 if (o == target + 1
|
|
|
1336 && IS_DIRECTORY_SEP (o[-1]) && IS_DIRECTORY_SEP (o[0]))
|
|
|
1337 ++o;
|
|
|
1338 else
|
|
|
1339 #endif /* APOLLO || WINDOWSNT */
|
|
|
1340 if (o == target && IS_ANY_SEP (*o))
|
|
|
1341 ++o;
|
|
|
1342 p += 3;
|
|
|
1343 }
|
|
|
1344 else
|
|
|
1345 {
|
|
|
1346 *o++ = *p++;
|
|
|
1347 }
|
|
|
1348 #endif /* not VMS */
|
|
|
1349 }
|
|
|
1350
|
|
|
1351 #ifdef DOS_NT
|
|
|
1352 /* at last, set drive name. */
|
|
|
1353 if (target[1] != ':'
|
|
|
1354 #ifdef WINDOWSNT
|
|
|
1355 /* Allow network paths that look like "\\foo" */
|
|
|
1356 && !(IS_DIRECTORY_SEP (target[0]) && IS_DIRECTORY_SEP (target[1]))
|
|
|
1357 #endif /* WINDOWSNT */
|
|
|
1358 )
|
|
|
1359 {
|
|
|
1360 target -= 2;
|
|
|
1361 target[0] = (drive < 0 ? getdisk () + 'A' : drive);
|
|
|
1362 target[1] = ':';
|
|
|
1363 }
|
|
|
1364 #endif /* DOS_NT */
|
|
|
1365
|
|
|
1366 return make_string (target, o - target);
|
|
|
1367 }
|
|
|
1368
|
|
|
1369 #if 0 /* FSFmacs */
|
|
|
1370 another older version of expand-file-name;
|
|
|
1371 #endif
|
|
|
1372
|
|
|
1373 /* not a full declaration because realpath() is typed differently
|
|
|
1374 on different systems */
|
|
|
1375 extern char *realpath ();
|
|
|
1376
|
|
20
|
1377 DEFUN ("file-truename", Ffile_truename, 1, 2, 0, /*
|
|
0
|
1378 Return the canonical name of the given FILE.
|
|
|
1379 Second arg DEFAULT is directory to start with if FILE is relative
|
|
|
1380 (does not start with slash); if DEFAULT is nil or missing,
|
|
|
1381 the current buffer's value of default-directory is used.
|
|
|
1382 No component of the resulting pathname will be a symbolic link, as
|
|
|
1383 in the realpath() function.
|
|
20
|
1384 */
|
|
|
1385 (filename, defalt))
|
|
0
|
1386 {
|
|
70
|
1387 /* This function can GC */
|
|
|
1388 struct gcpro gcpro1;
|
|
0
|
1389 Lisp_Object expanded_name;
|
|
|
1390 Lisp_Object handler;
|
|
|
1391
|
|
|
1392 CHECK_STRING (filename);
|
|
|
1393
|
|
70
|
1394 GCPRO1 (filename);
|
|
0
|
1395 expanded_name = Fexpand_file_name (filename, defalt);
|
|
70
|
1396 UNGCPRO;
|
|
0
|
1397
|
|
|
1398 if (!STRINGP (expanded_name))
|
|
|
1399 return Qnil;
|
|
|
1400
|
|
|
1401 GCPRO1 (expanded_name);
|
|
|
1402 handler = Ffind_file_name_handler (expanded_name, Qfile_truename);
|
|
|
1403 UNGCPRO;
|
|
|
1404
|
|
|
1405 if (!NILP (handler))
|
|
|
1406 return (call2_check_string (handler, Qfile_truename,
|
|
|
1407 expanded_name));
|
|
|
1408
|
|
|
1409 #ifdef VMS
|
|
|
1410 return (expanded_name);
|
|
|
1411 #else
|
|
|
1412 {
|
|
|
1413 char resolved_path[MAXPATHLEN];
|
|
|
1414 char path[MAXPATHLEN];
|
|
|
1415 char *p = path;
|
|
16
|
1416 int elen = XSTRING_LENGTH (expanded_name);
|
|
0
|
1417
|
|
|
1418 if (elen >= countof (path))
|
|
|
1419 goto toolong;
|
|
|
1420
|
|
16
|
1421 memcpy (path, XSTRING_DATA (expanded_name), elen + 1);
|
|
0
|
1422 /* memset (resolved_path, 0, sizeof (resolved_path)); */
|
|
|
1423
|
|
|
1424 /* Try doing it all at once. */
|
|
|
1425 /* !!#### Does realpath() Mule-encapsulate? */
|
|
|
1426 if (!realpath (path, resolved_path))
|
|
|
1427 {
|
|
|
1428 /* Didn't resolve it -- have to do it one component at a time. */
|
|
|
1429 /* "realpath" is a typically useless, stupid un*x piece of crap.
|
|
|
1430 It claims to return a useful value in the "error" case, but since
|
|
|
1431 there is no indication provided of how far along the pathname
|
|
|
1432 the function went before erring, there is no way to use the
|
|
|
1433 partial result returned. What a piece of junk. */
|
|
|
1434 for (;;)
|
|
|
1435 {
|
|
|
1436 p = (char *) memchr (p + 1, '/', elen - (p + 1 - path));
|
|
|
1437 if (p)
|
|
|
1438 *p = 0;
|
|
|
1439
|
|
|
1440 /* memset (resolved_path, 0, sizeof (resolved_path)); */
|
|
|
1441 if (realpath (path, resolved_path))
|
|
|
1442 {
|
|
|
1443 if (p)
|
|
|
1444 *p = '/';
|
|
|
1445 else
|
|
|
1446 break;
|
|
|
1447
|
|
|
1448 }
|
|
|
1449 else if (errno == ENOENT)
|
|
|
1450 {
|
|
|
1451 /* Failed on this component. Just tack on the rest of
|
|
|
1452 the string and we are done. */
|
|
|
1453 int rlen = strlen (resolved_path);
|
|
|
1454
|
|
|
1455 /* "On failure, it returns NULL, sets errno to indicate
|
|
|
1456 the error, and places in resolved_path the absolute pathname
|
|
|
1457 of the path component which could not be resolved." */
|
|
|
1458 if (p)
|
|
|
1459 {
|
|
|
1460 int plen = elen - (p - path);
|
|
|
1461
|
|
|
1462 if (rlen > 1 && resolved_path[rlen - 1] == '/')
|
|
|
1463 rlen = rlen - 1;
|
|
|
1464
|
|
|
1465 if (plen + rlen + 1 > countof (resolved_path))
|
|
|
1466 goto toolong;
|
|
|
1467
|
|
|
1468 resolved_path[rlen] = '/';
|
|
|
1469 memcpy (resolved_path + rlen + 1, p + 1, plen + 1 - 1);
|
|
|
1470 }
|
|
|
1471 break;
|
|
|
1472 }
|
|
|
1473 else
|
|
|
1474 goto lose;
|
|
|
1475 }
|
|
|
1476 }
|
|
|
1477
|
|
|
1478 {
|
|
|
1479 int rlen = strlen (resolved_path);
|
|
82
|
1480 if (elen > 0 && XSTRING_BYTE (expanded_name, elen - 1) == '/'
|
|
0
|
1481 && !(rlen > 0 && resolved_path[rlen - 1] == '/'))
|
|
|
1482 {
|
|
|
1483 if (rlen + 1 > countof (resolved_path))
|
|
|
1484 goto toolong;
|
|
|
1485 resolved_path[rlen] = '/';
|
|
|
1486 resolved_path[rlen + 1] = 0;
|
|
|
1487 rlen = rlen + 1;
|
|
|
1488 }
|
|
|
1489 return make_string ((Bufbyte *) resolved_path, rlen);
|
|
|
1490 }
|
|
|
1491
|
|
|
1492 toolong:
|
|
|
1493 errno = ENAMETOOLONG;
|
|
|
1494 goto lose;
|
|
|
1495 lose:
|
|
|
1496 report_file_error ("Finding truename", list1 (expanded_name));
|
|
|
1497 }
|
|
|
1498 return Qnil; /* suppress compiler warning */
|
|
|
1499 #endif /* not VMS */
|
|
|
1500 }
|
|
|
1501
|
|
|
1502
|
|
20
|
1503 DEFUN ("substitute-in-file-name", Fsubstitute_in_file_name, 1, 1, 0, /*
|
|
0
|
1504 Substitute environment variables referred to in FILENAME.
|
|
|
1505 `$FOO' where FOO is an environment variable name means to substitute
|
|
|
1506 the value of that variable. The variable name should be terminated
|
|
|
1507 with a character not a letter, digit or underscore; otherwise, enclose
|
|
|
1508 the entire variable name in braces.
|
|
|
1509 If `/~' appears, all of FILENAME through that `/' is discarded.
|
|
|
1510
|
|
|
1511 On VMS, `$' substitution is not done; this function does little and only
|
|
|
1512 duplicates what `expand-file-name' does.
|
|
20
|
1513 */
|
|
|
1514 (string))
|
|
0
|
1515 {
|
|
|
1516 Bufbyte *nm;
|
|
|
1517
|
|
|
1518 Bufbyte *s, *p, *o, *x, *endp;
|
|
|
1519 Bufbyte *target = 0;
|
|
|
1520 int total = 0;
|
|
|
1521 int substituted = 0;
|
|
|
1522 Bufbyte *xnm;
|
|
|
1523 Lisp_Object handler;
|
|
|
1524
|
|
|
1525 CHECK_STRING (string);
|
|
|
1526
|
|
|
1527 /* If the file name has special constructs in it,
|
|
|
1528 call the corresponding file handler. */
|
|
|
1529 handler = Ffind_file_name_handler (string, Qsubstitute_in_file_name);
|
|
|
1530 if (!NILP (handler))
|
|
70
|
1531 {
|
|
|
1532 Lisp_Object retval = call2 (handler, Qsubstitute_in_file_name,
|
|
|
1533 string);
|
|
|
1534
|
|
|
1535 if (!NILP (retval))
|
|
|
1536 CHECK_STRING (retval);
|
|
|
1537 return retval;
|
|
|
1538 }
|
|
0
|
1539
|
|
16
|
1540 nm = XSTRING_DATA (string);
|
|
0
|
1541 #ifdef MSDOS
|
|
|
1542 dostounix_filename (nm = strcpy (alloca (strlen (nm) + 1), nm));
|
|
16
|
1543 substituted = !strcmp (nm, XSTRING_DATA (string));
|
|
0
|
1544 #endif
|
|
16
|
1545 endp = nm + XSTRING_LENGTH (string);
|
|
0
|
1546
|
|
|
1547 /* If /~ or // appears, discard everything through first slash. */
|
|
|
1548
|
|
|
1549 for (p = nm; p != endp; p++)
|
|
|
1550 {
|
|
|
1551 if ((p[0] == '~' ||
|
|
|
1552 #ifdef APOLLO
|
|
|
1553 /* // at start of file name is meaningful in Apollo system */
|
|
|
1554 (p[0] == '/' && p - 1 != nm)
|
|
|
1555 #else /* not APOLLO */
|
|
|
1556 #ifdef WINDOWSNT
|
|
|
1557 (IS_DIRECTORY_SEP (p[0]) && p - 1 != nm)
|
|
|
1558 #else /* not WINDOWSNT */
|
|
|
1559 p[0] == '/'
|
|
|
1560 #endif /* not WINDOWSNT */
|
|
|
1561 #endif /* not APOLLO */
|
|
|
1562 )
|
|
|
1563 && p != nm
|
|
|
1564 && (0
|
|
|
1565 #ifdef VMS
|
|
|
1566 || p[-1] == ':' || p[-1] == ']' || p[-1] == '>'
|
|
|
1567 #endif /* VMS */
|
|
|
1568 || IS_DIRECTORY_SEP (p[-1])))
|
|
|
1569 {
|
|
|
1570 nm = p;
|
|
|
1571 substituted = 1;
|
|
|
1572 }
|
|
|
1573 #ifdef DOS_NT
|
|
|
1574 if (p[0] && p[1] == ':')
|
|
|
1575 {
|
|
|
1576 nm = p;
|
|
|
1577 substituted = 1;
|
|
|
1578 }
|
|
|
1579 #endif /* DOS_NT */
|
|
|
1580 }
|
|
|
1581
|
|
|
1582 #ifdef VMS
|
|
|
1583 return build_string (nm);
|
|
|
1584 #else
|
|
|
1585
|
|
|
1586 /* See if any variables are substituted into the string
|
|
|
1587 and find the total length of their values in `total' */
|
|
|
1588
|
|
|
1589 for (p = nm; p != endp;)
|
|
|
1590 if (*p != '$')
|
|
|
1591 p++;
|
|
|
1592 else
|
|
|
1593 {
|
|
|
1594 p++;
|
|
|
1595 if (p == endp)
|
|
|
1596 goto badsubst;
|
|
|
1597 else if (*p == '$')
|
|
|
1598 {
|
|
|
1599 /* "$$" means a single "$" */
|
|
|
1600 p++;
|
|
|
1601 total -= 1;
|
|
|
1602 substituted = 1;
|
|
|
1603 continue;
|
|
|
1604 }
|
|
|
1605 else if (*p == '{')
|
|
|
1606 {
|
|
|
1607 o = ++p;
|
|
|
1608 while (p != endp && *p != '}') p++;
|
|
|
1609 if (*p != '}') goto missingclose;
|
|
|
1610 s = p;
|
|
|
1611 }
|
|
|
1612 else
|
|
|
1613 {
|
|
|
1614 o = p;
|
|
|
1615 while (p != endp && (isalnum (*p) || *p == '_')) p++;
|
|
|
1616 s = p;
|
|
|
1617 }
|
|
|
1618
|
|
|
1619 /* Copy out the variable name */
|
|
|
1620 target = (Bufbyte *) alloca (s - o + 1);
|
|
|
1621 strncpy ((char *) target, (char *) o, s - o);
|
|
|
1622 target[s - o] = 0;
|
|
|
1623 #ifdef DOS_NT
|
|
|
1624 strupr (target); /* $home == $HOME etc. */
|
|
|
1625 #endif /* DOS_NT */
|
|
|
1626
|
|
|
1627 /* Get variable value */
|
|
|
1628 o = (Bufbyte *) egetenv ((char *) target);
|
|
|
1629 if (!o) goto badvar;
|
|
|
1630 total += strlen ((char *) o);
|
|
|
1631 substituted = 1;
|
|
|
1632 }
|
|
|
1633
|
|
|
1634 if (!substituted)
|
|
|
1635 return string;
|
|
|
1636
|
|
|
1637 /* If substitution required, recopy the string and do it */
|
|
|
1638 /* Make space in stack frame for the new copy */
|
|
16
|
1639 xnm = (Bufbyte *) alloca (XSTRING_LENGTH (string) + total + 1);
|
|
0
|
1640 x = xnm;
|
|
|
1641
|
|
|
1642 /* Copy the rest of the name through, replacing $ constructs with values */
|
|
|
1643 for (p = nm; *p;)
|
|
|
1644 if (*p != '$')
|
|
|
1645 *x++ = *p++;
|
|
|
1646 else
|
|
|
1647 {
|
|
|
1648 p++;
|
|
|
1649 if (p == endp)
|
|
|
1650 goto badsubst;
|
|
|
1651 else if (*p == '$')
|
|
|
1652 {
|
|
|
1653 *x++ = *p++;
|
|
|
1654 continue;
|
|
|
1655 }
|
|
|
1656 else if (*p == '{')
|
|
|
1657 {
|
|
|
1658 o = ++p;
|
|
|
1659 while (p != endp && *p != '}') p++;
|
|
|
1660 if (*p != '}') goto missingclose;
|
|
|
1661 s = p++;
|
|
|
1662 }
|
|
|
1663 else
|
|
|
1664 {
|
|
|
1665 o = p;
|
|
|
1666 while (p != endp && (isalnum (*p) || *p == '_')) p++;
|
|
|
1667 s = p;
|
|
|
1668 }
|
|
|
1669
|
|
|
1670 /* Copy out the variable name */
|
|
|
1671 target = (Bufbyte *) alloca (s - o + 1);
|
|
|
1672 strncpy ((char *) target, (char *) o, s - o);
|
|
|
1673 target[s - o] = 0;
|
|
|
1674 #ifdef DOS_NT
|
|
|
1675 strupr (target); /* $home == $HOME etc. */
|
|
|
1676 #endif /* DOS_NT */
|
|
|
1677
|
|
|
1678 /* Get variable value */
|
|
|
1679 o = (Bufbyte *) egetenv ((char *) target);
|
|
|
1680 if (!o)
|
|
|
1681 goto badvar;
|
|
|
1682
|
|
|
1683 strcpy ((char *) x, (char *) o);
|
|
|
1684 x += strlen ((char *) o);
|
|
|
1685 }
|
|
|
1686
|
|
|
1687 *x = 0;
|
|
|
1688
|
|
|
1689 /* If /~ or // appears, discard everything through first slash. */
|
|
|
1690
|
|
|
1691 for (p = xnm; p != x; p++)
|
|
|
1692 if ((p[0] == '~'
|
|
|
1693 #ifdef APOLLO
|
|
|
1694 /* // at start of file name is meaningful in Apollo system */
|
|
|
1695 || (p[0] == '/' && p - 1 != xnm)
|
|
|
1696 #else /* not APOLLO */
|
|
|
1697 #ifdef WINDOWSNT
|
|
|
1698 || (IS_DIRECTORY_SEP (p[0]) && p - 1 != xnm)
|
|
|
1699 #else /* not WINDOWSNT */
|
|
|
1700 || p[0] == '/'
|
|
|
1701 #endif /* not WINDOWSNT */
|
|
|
1702 #endif /* not APOLLO */
|
|
|
1703 )
|
|
|
1704 /* don't do p[-1] if that would go off the beginning --jwz */
|
|
|
1705 && p != nm && p > xnm && IS_DIRECTORY_SEP (p[-1]))
|
|
|
1706 xnm = p;
|
|
|
1707 #ifdef DOS_NT
|
|
|
1708 else if (p[0] && p[1] == ':')
|
|
|
1709 xnm = p;
|
|
|
1710 #endif
|
|
|
1711
|
|
|
1712 return make_string (xnm, x - xnm);
|
|
|
1713
|
|
|
1714 badsubst:
|
|
|
1715 error ("Bad format environment-variable substitution");
|
|
|
1716 missingclose:
|
|
|
1717 error ("Missing \"}\" in environment-variable substitution");
|
|
|
1718 badvar:
|
|
|
1719 error ("Substituting nonexistent environment variable \"%s\"",
|
|
|
1720 target);
|
|
|
1721
|
|
|
1722 /* NOTREACHED */
|
|
|
1723 return Qnil; /* suppress compiler warning */
|
|
|
1724 #endif /* not VMS */
|
|
|
1725 }
|
|
|
1726
|
|
|
1727 /* (directory-file-name (expand-file-name FOO)) */
|
|
|
1728
|
|
|
1729 Lisp_Object
|
|
|
1730 expand_and_dir_to_file (Lisp_Object filename, Lisp_Object defdir)
|
|
|
1731 {
|
|
70
|
1732 /* This function can GC */
|
|
0
|
1733 Lisp_Object abspath;
|
|
|
1734 struct gcpro gcpro1;
|
|
|
1735
|
|
70
|
1736 GCPRO1 (filename);
|
|
0
|
1737 abspath = Fexpand_file_name (filename, defdir);
|
|
|
1738 #ifdef VMS
|
|
|
1739 {
|
|
|
1740 Bufbyte c =
|
|
82
|
1741 XSTRING_BYTE (abspath, XSTRING_LENGTH (abspath) - 1);
|
|
0
|
1742 if (c == ':' || c == ']' || c == '>')
|
|
|
1743 abspath = Fdirectory_file_name (abspath);
|
|
|
1744 }
|
|
|
1745 #else
|
|
|
1746 /* Remove final slash, if any (unless path is root).
|
|
|
1747 stat behaves differently depending! */
|
|
16
|
1748 if (XSTRING_LENGTH (abspath) > 1
|
|
82
|
1749 && IS_DIRECTORY_SEP (XSTRING_BYTE (abspath, XSTRING_LENGTH (abspath) - 1))
|
|
|
1750 && !IS_DEVICE_SEP (XSTRING_BYTE (abspath, XSTRING_LENGTH (abspath) - 2)))
|
|
0
|
1751 /* We cannot take shortcuts; they might be wrong for magic file names. */
|
|
|
1752 abspath = Fdirectory_file_name (abspath);
|
|
|
1753 #endif
|
|
|
1754 UNGCPRO;
|
|
|
1755 return abspath;
|
|
|
1756 }
|
|
|
1757
|
|
|
1758 /* Signal an error if the file ABSNAME already exists.
|
|
|
1759 If INTERACTIVE is nonzero, ask the user whether to proceed,
|
|
|
1760 and bypass the error if the user says to go ahead.
|
|
|
1761 QUERYSTRING is a name for the action that is being considered
|
|
|
1762 to alter the file.
|
|
|
1763 *STATPTR is used to store the stat information if the file exists.
|
|
|
1764 If the file does not exist, STATPTR->st_mode is set to 0. */
|
|
|
1765
|
|
|
1766 static void
|
|
|
1767 barf_or_query_if_file_exists (Lisp_Object absname, CONST char *querystring,
|
|
|
1768 int interactive, struct stat *statptr)
|
|
|
1769 {
|
|
|
1770 struct stat statbuf;
|
|
|
1771
|
|
|
1772 /* stat is a good way to tell whether the file exists,
|
|
|
1773 regardless of what access permissions it has. */
|
|
16
|
1774 if (stat ((char *) XSTRING_DATA (absname), &statbuf) >= 0)
|
|
0
|
1775 {
|
|
|
1776 Lisp_Object tem;
|
|
70
|
1777 struct gcpro gcpro1;
|
|
|
1778
|
|
|
1779 GCPRO1 (absname);
|
|
0
|
1780 if (interactive)
|
|
70
|
1781 tem = call1
|
|
|
1782 (Qyes_or_no_p,
|
|
|
1783 (emacs_doprnt_string_c
|
|
0
|
1784 ((CONST Bufbyte *) GETTEXT ("File %s already exists; %s anyway? "),
|
|
16
|
1785 Qnil, -1, XSTRING_DATA (absname),
|
|
70
|
1786 GETTEXT (querystring))));
|
|
0
|
1787 else
|
|
|
1788 tem = Qnil;
|
|
70
|
1789 UNGCPRO;
|
|
0
|
1790 if (NILP (tem))
|
|
|
1791 Fsignal (Qfile_already_exists,
|
|
|
1792 list2 (build_translated_string ("File already exists"),
|
|
|
1793 absname));
|
|
|
1794 if (statptr)
|
|
|
1795 *statptr = statbuf;
|
|
|
1796 }
|
|
|
1797 else
|
|
|
1798 {
|
|
|
1799 if (statptr)
|
|
|
1800 statptr->st_mode = 0;
|
|
|
1801 }
|
|
|
1802 return;
|
|
|
1803 }
|
|
|
1804
|
|
20
|
1805 DEFUN ("copy-file", Fcopy_file, 2, 4,
|
|
|
1806 "fCopy file: \nFCopy %s to file: \np\nP", /*
|
|
0
|
1807 Copy FILE to NEWNAME. Both args must be strings.
|
|
|
1808 Signals a `file-already-exists' error if file NEWNAME already exists,
|
|
|
1809 unless a third argument OK-IF-ALREADY-EXISTS is supplied and non-nil.
|
|
|
1810 A number as third arg means request confirmation if NEWNAME already exists.
|
|
|
1811 This is what happens in interactive use with M-x.
|
|
|
1812 Fourth arg KEEP-TIME non-nil means give the new file the same
|
|
|
1813 last-modified time as the old one. (This works on only some systems.)
|
|
|
1814 A prefix arg makes KEEP-TIME non-nil.
|
|
20
|
1815 */
|
|
74
|
1816 (filename, newname, ok_if_already_exists, keep_time))
|
|
0
|
1817 {
|
|
70
|
1818 /* This function can GC */
|
|
0
|
1819 int ifd, ofd, n;
|
|
|
1820 char buf[16 * 1024];
|
|
|
1821 struct stat st, out_st;
|
|
|
1822 Lisp_Object handler;
|
|
|
1823 int speccount = specpdl_depth ();
|
|
|
1824 struct gcpro gcpro1, gcpro2;
|
|
|
1825 /* Lisp_Object args[6]; */
|
|
|
1826 int input_file_statable_p;
|
|
|
1827
|
|
|
1828 GCPRO2 (filename, newname);
|
|
|
1829 CHECK_STRING (filename);
|
|
|
1830 CHECK_STRING (newname);
|
|
|
1831 filename = Fexpand_file_name (filename, Qnil);
|
|
|
1832 newname = Fexpand_file_name (newname, Qnil);
|
|
|
1833
|
|
|
1834 /* If the input file name has special constructs in it,
|
|
|
1835 call the corresponding file handler. */
|
|
|
1836 handler = Ffind_file_name_handler (filename, Qcopy_file);
|
|
|
1837 /* Likewise for output file name. */
|
|
|
1838 if (NILP (handler))
|
|
|
1839 handler = Ffind_file_name_handler (newname, Qcopy_file);
|
|
|
1840 if (!NILP (handler))
|
|
|
1841 {
|
|
|
1842 UNGCPRO;
|
|
|
1843 return call5 (handler, Qcopy_file, filename, newname,
|
|
74
|
1844 ok_if_already_exists, keep_time);
|
|
0
|
1845 }
|
|
|
1846
|
|
|
1847 /* When second argument is a directory, copy the file into it.
|
|
|
1848 (copy-file "foo" "bar/") == (copy-file "foo" "bar/foo")
|
|
|
1849 */
|
|
|
1850 if (!NILP (Ffile_directory_p (newname)))
|
|
|
1851 {
|
|
|
1852 Lisp_Object args[3];
|
|
|
1853 struct gcpro ngcpro1;
|
|
|
1854 int i = 1;
|
|
|
1855
|
|
|
1856 args[0] = newname;
|
|
|
1857 args[1] = Qnil; args[2] = Qnil;
|
|
|
1858 NGCPRO1 (*args);
|
|
|
1859 ngcpro1.nvars = 3;
|
|
82
|
1860 if (XSTRING_BYTE (newname, XSTRING_LENGTH (newname) - 1) != '/')
|
|
0
|
1861 args[i++] = build_string ("/");
|
|
|
1862 args[i++] = Ffile_name_nondirectory (filename);
|
|
|
1863 newname = Fconcat (i, args);
|
|
|
1864 NUNGCPRO;
|
|
|
1865 }
|
|
|
1866
|
|
|
1867 if (NILP (ok_if_already_exists)
|
|
|
1868 || INTP (ok_if_already_exists))
|
|
|
1869 barf_or_query_if_file_exists (newname, "copy to it",
|
|
|
1870 INTP (ok_if_already_exists), &out_st);
|
|
16
|
1871 else if (stat ((CONST char *) XSTRING_DATA (newname), &out_st) < 0)
|
|
0
|
1872 out_st.st_mode = 0;
|
|
|
1873
|
|
16
|
1874 ifd = open ((char *) XSTRING_DATA (filename), O_RDONLY, 0);
|
|
0
|
1875 if (ifd < 0)
|
|
|
1876 report_file_error ("Opening input file", Fcons (filename, Qnil));
|
|
|
1877
|
|
|
1878 record_unwind_protect (close_file_unwind, make_int (ifd));
|
|
|
1879
|
|
|
1880 /* We can only copy regular files and symbolic links. Other files are not
|
|
|
1881 copyable by us. */
|
|
|
1882 input_file_statable_p = (fstat (ifd, &st) >= 0);
|
|
|
1883
|
|
|
1884 #ifndef DOS_NT
|
|
|
1885 if (out_st.st_mode != 0
|
|
|
1886 && st.st_dev == out_st.st_dev && st.st_ino == out_st.st_ino)
|
|
|
1887 {
|
|
|
1888 errno = 0;
|
|
|
1889 report_file_error ("Input and output files are the same",
|
|
|
1890 Fcons (filename, Fcons (newname, Qnil)));
|
|
|
1891 }
|
|
|
1892 #endif
|
|
|
1893
|
|
|
1894 #if defined (S_ISREG) && defined (S_ISLNK)
|
|
|
1895 if (input_file_statable_p)
|
|
|
1896 {
|
|
|
1897 if (!(S_ISREG (st.st_mode))
|
|
|
1898 /* XEmacs: have to allow S_ISCHR in order to copy /dev/null */
|
|
|
1899 #ifdef S_ISCHR
|
|
|
1900 && !(S_ISCHR (st.st_mode))
|
|
|
1901 #endif
|
|
|
1902 && !(S_ISLNK (st.st_mode)))
|
|
|
1903 {
|
|
|
1904 #if defined (EISDIR)
|
|
|
1905 /* Get a better looking error message. */
|
|
|
1906 errno = EISDIR;
|
|
|
1907 #endif /* EISDIR */
|
|
|
1908 report_file_error ("Non-regular file", Fcons (filename, Qnil));
|
|
|
1909 }
|
|
|
1910 }
|
|
|
1911 #endif /* S_ISREG && S_ISLNK */
|
|
|
1912
|
|
|
1913 #ifdef VMS
|
|
|
1914 /* Create the copy file with the same record format as the input file */
|
|
16
|
1915 ofd = sys_creat ((char *) XSTRING_DATA (newname), 0666, ifd);
|
|
0
|
1916 #else
|
|
|
1917 #ifdef MSDOS
|
|
|
1918 /* System's default file type was set to binary by _fmode in emacs.c. */
|
|
16
|
1919 ofd = creat ((char *) XSTRING_DATA (newname), S_IREAD | S_IWRITE);
|
|
0
|
1920 #else /* not MSDOS */
|
|
16
|
1921 ofd = creat ((char *) XSTRING_DATA (newname), 0666);
|
|
0
|
1922 #endif /* not MSDOS */
|
|
|
1923 #endif /* VMS */
|
|
|
1924 if (ofd < 0)
|
|
|
1925 report_file_error ("Opening output file", list1 (newname));
|
|
|
1926
|
|
|
1927 {
|
|
|
1928 Lisp_Object ofd_locative = noseeum_cons (make_int (ofd), Qnil);
|
|
|
1929
|
|
|
1930 record_unwind_protect (close_file_unwind, ofd_locative);
|
|
|
1931
|
|
|
1932 while ((n = read_allowing_quit (ifd, buf, sizeof (buf))) > 0)
|
|
|
1933 {
|
|
|
1934 if (write_allowing_quit (ofd, buf, n) != n)
|
|
|
1935 report_file_error ("I/O error", list1 (newname));
|
|
|
1936 }
|
|
|
1937
|
|
|
1938 /* Closing the output clobbers the file times on some systems. */
|
|
|
1939 if (close (ofd) < 0)
|
|
|
1940 report_file_error ("I/O error", Fcons (newname, Qnil));
|
|
|
1941
|
|
|
1942 if (input_file_statable_p)
|
|
|
1943 {
|
|
74
|
1944 if (!NILP (keep_time))
|
|
0
|
1945 {
|
|
|
1946 EMACS_TIME atime, mtime;
|
|
|
1947 EMACS_SET_SECS_USECS (atime, st.st_atime, 0);
|
|
|
1948 EMACS_SET_SECS_USECS (mtime, st.st_mtime, 0);
|
|
16
|
1949 if (set_file_times ((char *) XSTRING_DATA (newname), atime,
|
|
0
|
1950 mtime))
|
|
|
1951 report_file_error ("I/O error", Fcons (newname, Qnil));
|
|
|
1952 }
|
|
|
1953 #ifndef MSDOS
|
|
16
|
1954 chmod ((CONST char *) XSTRING_DATA (newname),
|
|
0
|
1955 st.st_mode & 07777);
|
|
|
1956 #else /* MSDOS */
|
|
|
1957 #if defined (__DJGPP__) && __DJGPP__ > 1
|
|
|
1958 /* In DJGPP v2.0 and later, fstat usually returns true file mode bits,
|
|
|
1959 and if it can't, it tells so. Otherwise, under MSDOS we usually
|
|
|
1960 get only the READ bit, which will make the copied file read-only,
|
|
|
1961 so it's better not to chmod at all. */
|
|
|
1962 if ((_djstat_flags & _STFAIL_WRITEBIT) == 0)
|
|
16
|
1963 chmod ((char *) XSTRING_DATA (newname), st.st_mode & 07777);
|
|
0
|
1964 #endif /* DJGPP version 2 or newer */
|
|
|
1965 #endif /* MSDOS */
|
|
|
1966 }
|
|
|
1967
|
|
|
1968 /* We'll close it by hand */
|
|
|
1969 XCAR (ofd_locative) = Qnil;
|
|
|
1970
|
|
|
1971 /* Close ifd */
|
|
|
1972 unbind_to (speccount, Qnil);
|
|
|
1973 }
|
|
|
1974
|
|
|
1975 UNGCPRO;
|
|
|
1976 return Qnil;
|
|
|
1977 }
|
|
|
1978
|
|
20
|
1979 DEFUN ("make-directory-internal", Fmake_directory_internal, 1, 1, 0, /*
|
|
0
|
1980 Create a directory. One argument, a file name string.
|
|
20
|
1981 */
|
|
|
1982 (dirname))
|
|
0
|
1983 {
|
|
70
|
1984 /* This function can GC */
|
|
0
|
1985 char dir [MAXPATHLEN];
|
|
|
1986 Lisp_Object handler;
|
|
70
|
1987
|
|
0
|
1988 struct gcpro gcpro1;
|
|
|
1989
|
|
70
|
1990 GCPRO1 (dirname);
|
|
0
|
1991 CHECK_STRING (dirname);
|
|
|
1992 dirname = Fexpand_file_name (dirname, Qnil);
|
|
|
1993
|
|
|
1994 handler = Ffind_file_name_handler (dirname, Qmake_directory_internal);
|
|
|
1995 UNGCPRO;
|
|
|
1996 if (!NILP (handler))
|
|
70
|
1997 return (call2 (handler, Qmake_directory_internal,
|
|
|
1998 dirname));
|
|
0
|
1999
|
|
16
|
2000 if (XSTRING_LENGTH (dirname) > (sizeof (dir) - 1))
|
|
0
|
2001 {
|
|
|
2002 return Fsignal (Qfile_error,
|
|
|
2003 list3 (build_translated_string ("Creating directory"),
|
|
|
2004 build_translated_string ("pathame too long"),
|
|
|
2005 dirname));
|
|
|
2006 }
|
|
16
|
2007 strncpy (dir, (char *) XSTRING_DATA (dirname),
|
|
|
2008 XSTRING_LENGTH (dirname) + 1);
|
|
0
|
2009
|
|
|
2010 #ifndef VMS
|
|
16
|
2011 if (dir [XSTRING_LENGTH (dirname) - 1] == '/')
|
|
|
2012 dir [XSTRING_LENGTH (dirname) - 1] = 0;
|
|
0
|
2013 #endif
|
|
|
2014
|
|
|
2015 #ifdef WINDOWSNT
|
|
|
2016 if (mkdir (dir) != 0)
|
|
|
2017 #else
|
|
|
2018 if (mkdir (dir, 0777) != 0)
|
|
|
2019 #endif
|
|
|
2020 report_file_error ("Creating directory", list1 (dirname));
|
|
|
2021
|
|
|
2022 return Qnil;
|
|
|
2023 }
|
|
|
2024
|
|
20
|
2025 DEFUN ("delete-directory", Fdelete_directory, 1, 1, "FDelete directory: ", /*
|
|
0
|
2026 Delete a directory. One argument, a file name or directory name string.
|
|
20
|
2027 */
|
|
|
2028 (dirname))
|
|
0
|
2029 {
|
|
70
|
2030 /* This function can GC */
|
|
0
|
2031 Lisp_Object handler;
|
|
|
2032 struct gcpro gcpro1;
|
|
|
2033
|
|
70
|
2034 GCPRO1 (dirname);
|
|
40
|
2035 CHECK_STRING (dirname);
|
|
70
|
2036 dirname =
|
|
|
2037 Fdirectory_file_name (Fexpand_file_name (dirname, Qnil));
|
|
0
|
2038
|
|
|
2039 handler = Ffind_file_name_handler (dirname, Qdelete_directory);
|
|
|
2040 UNGCPRO;
|
|
|
2041 if (!NILP (handler))
|
|
|
2042 return (call2 (handler, Qdelete_directory, dirname));
|
|
|
2043
|
|
16
|
2044 if (rmdir ((char *) XSTRING_DATA (dirname)) != 0)
|
|
0
|
2045 report_file_error ("Removing directory", list1 (dirname));
|
|
|
2046
|
|
|
2047 return Qnil;
|
|
|
2048 }
|
|
|
2049
|
|
20
|
2050 DEFUN ("delete-file", Fdelete_file, 1, 1, "fDelete file: ", /*
|
|
0
|
2051 Delete specified file. One argument, a file name string.
|
|
|
2052 If file has multiple names, it continues to exist with the other names.
|
|
20
|
2053 */
|
|
|
2054 (filename))
|
|
0
|
2055 {
|
|
70
|
2056 /* This function can GC */
|
|
0
|
2057 Lisp_Object handler;
|
|
|
2058 struct gcpro gcpro1;
|
|
|
2059
|
|
70
|
2060 GCPRO1 (filename);
|
|
0
|
2061 CHECK_STRING (filename);
|
|
|
2062 filename = Fexpand_file_name (filename, Qnil);
|
|
|
2063
|
|
|
2064 handler = Ffind_file_name_handler (filename, Qdelete_file);
|
|
|
2065 UNGCPRO;
|
|
|
2066 if (!NILP (handler))
|
|
|
2067 return call2 (handler, Qdelete_file, filename);
|
|
|
2068
|
|
16
|
2069 if (0 > unlink ((char *) XSTRING_DATA (filename)))
|
|
0
|
2070 report_file_error ("Removing old name", list1 (filename));
|
|
|
2071 return Qnil;
|
|
|
2072 }
|
|
|
2073
|
|
|
2074 static Lisp_Object
|
|
|
2075 internal_delete_file_1 (Lisp_Object ignore, Lisp_Object ignore2)
|
|
|
2076 {
|
|
|
2077 return Qt;
|
|
|
2078 }
|
|
|
2079
|
|
|
2080 /* Delete file FILENAME, returning 1 if successful and 0 if failed. */
|
|
|
2081
|
|
|
2082 int
|
|
|
2083 internal_delete_file (Lisp_Object filename)
|
|
|
2084 {
|
|
|
2085 return NILP (condition_case_1 (Qt, Fdelete_file, filename,
|
|
|
2086 internal_delete_file_1, Qnil));
|
|
|
2087 }
|
|
|
2088
|
|
20
|
2089 DEFUN ("rename-file", Frename_file, 2, 3,
|
|
|
2090 "fRename file: \nFRename %s to file: \np", /*
|
|
0
|
2091 Rename FILE as NEWNAME. Both args strings.
|
|
|
2092 If file has names other than FILE, it continues to have those names.
|
|
|
2093 Signals a `file-already-exists' error if a file NEWNAME already exists
|
|
|
2094 unless optional third argument OK-IF-ALREADY-EXISTS is non-nil.
|
|
|
2095 A number as third arg means request confirmation if NEWNAME already exists.
|
|
|
2096 This is what happens in interactive use with M-x.
|
|
20
|
2097 */
|
|
|
2098 (filename, newname, ok_if_already_exists))
|
|
0
|
2099 {
|
|
70
|
2100 /* This function can GC */
|
|
0
|
2101 Lisp_Object handler;
|
|
|
2102 struct gcpro gcpro1, gcpro2;
|
|
|
2103
|
|
|
2104 GCPRO2 (filename, newname);
|
|
|
2105 CHECK_STRING (filename);
|
|
|
2106 CHECK_STRING (newname);
|
|
|
2107 filename = Fexpand_file_name (filename, Qnil);
|
|
|
2108 newname = Fexpand_file_name (newname, Qnil);
|
|
|
2109
|
|
|
2110 /* If the file name has special constructs in it,
|
|
|
2111 call the corresponding file handler. */
|
|
|
2112 handler = Ffind_file_name_handler (filename, Qrename_file);
|
|
|
2113 if (NILP (handler))
|
|
|
2114 handler = Ffind_file_name_handler (newname, Qrename_file);
|
|
|
2115 if (!NILP (handler))
|
|
|
2116 {
|
|
|
2117 UNGCPRO;
|
|
|
2118 return call4 (handler, Qrename_file,
|
|
|
2119 filename, newname, ok_if_already_exists);
|
|
|
2120 }
|
|
|
2121
|
|
|
2122 /* When second argument is a directory, rename the file into it.
|
|
|
2123 (rename-file "foo" "bar/") == (rename-file "foo" "bar/foo")
|
|
|
2124 */
|
|
|
2125 if (!NILP (Ffile_directory_p (newname)))
|
|
|
2126 {
|
|
|
2127 Lisp_Object args[3];
|
|
|
2128 struct gcpro ngcpro1;
|
|
|
2129 int i = 1;
|
|
|
2130
|
|
|
2131 args[0] = newname;
|
|
|
2132 args[1] = Qnil; args[2] = Qnil;
|
|
|
2133 NGCPRO1 (*args);
|
|
|
2134 ngcpro1.nvars = 3;
|
|
16
|
2135 if (XSTRING_BYTE (newname, XSTRING_LENGTH (newname) - 1) != '/')
|
|
0
|
2136 args[i++] = build_string ("/");
|
|
|
2137 args[i++] = Ffile_name_nondirectory (filename);
|
|
|
2138 newname = Fconcat (i, args);
|
|
|
2139 NUNGCPRO;
|
|
|
2140 }
|
|
|
2141
|
|
|
2142 if (NILP (ok_if_already_exists)
|
|
|
2143 || INTP (ok_if_already_exists))
|
|
|
2144 barf_or_query_if_file_exists (newname, "rename to it",
|
|
|
2145 INTP (ok_if_already_exists), 0);
|
|
|
2146
|
|
|
2147 #ifdef WINDOWSNT
|
|
100
|
2148 if (!MoveFile (XSTRING (filename)->_data, XSTRING (newname)->_data))
|
|
0
|
2149 #else /* not WINDOWSNT */
|
|
|
2150 /* FSFmacs only calls rename() here under BSD 4.1, and calls
|
|
|
2151 link() and unlink() otherwise, but that's bogus. Sometimes
|
|
|
2152 rename() succeeds where link()/unlink() fail, and we have
|
|
|
2153 configure check for rename() and emulate using link()/unlink()
|
|
|
2154 if necessary. */
|
|
16
|
2155 if (0 > rename ((char *) XSTRING_DATA (filename),
|
|
|
2156 (char *) XSTRING_DATA (newname)))
|
|
0
|
2157 #endif /* not WINDOWSNT */
|
|
|
2158 {
|
|
|
2159 #ifdef WINDOWSNT
|
|
|
2160 /* Why two? And why doesn't MS document what MoveFile will return? */
|
|
|
2161 if (GetLastError () == ERROR_FILE_EXISTS
|
|
|
2162 || GetLastError () == ERROR_ALREADY_EXISTS)
|
|
|
2163 #else /* not WINDOWSNT */
|
|
|
2164 if (errno == EXDEV)
|
|
|
2165 #endif /* not WINDOWSNT */
|
|
|
2166 {
|
|
|
2167 Fcopy_file (filename, newname,
|
|
|
2168 /* We have already prompted if it was an integer,
|
|
|
2169 so don't have copy-file prompt again. */
|
|
|
2170 ((NILP (ok_if_already_exists)) ? Qnil : Qt),
|
|
|
2171 Qt);
|
|
|
2172 Fdelete_file (filename);
|
|
|
2173 }
|
|
|
2174 else
|
|
|
2175 {
|
|
|
2176 report_file_error ("Renaming", list2 (filename, newname));
|
|
|
2177 }
|
|
|
2178 }
|
|
|
2179 UNGCPRO;
|
|
|
2180 return Qnil;
|
|
|
2181 }
|
|
|
2182
|
|
20
|
2183 DEFUN ("add-name-to-file", Fadd_name_to_file, 2, 3,
|
|
|
2184 "fAdd name to file: \nFName to add to %s: \np", /*
|
|
0
|
2185 Give FILE additional name NEWNAME. Both args strings.
|
|
|
2186 Signals a `file-already-exists' error if a file NEWNAME already exists
|
|
|
2187 unless optional third argument OK-IF-ALREADY-EXISTS is non-nil.
|
|
|
2188 A number as third arg means request confirmation if NEWNAME already exists.
|
|
|
2189 This is what happens in interactive use with M-x.
|
|
20
|
2190 */
|
|
|
2191 (filename, newname, ok_if_already_exists))
|
|
0
|
2192 {
|
|
70
|
2193 /* This function can GC */
|
|
0
|
2194 Lisp_Object handler;
|
|
|
2195 struct gcpro gcpro1, gcpro2;
|
|
|
2196
|
|
|
2197 GCPRO2 (filename, newname);
|
|
|
2198 CHECK_STRING (filename);
|
|
|
2199 CHECK_STRING (newname);
|
|
|
2200 filename = Fexpand_file_name (filename, Qnil);
|
|
|
2201 newname = Fexpand_file_name (newname, Qnil);
|
|
|
2202
|
|
|
2203 /* If the file name has special constructs in it,
|
|
|
2204 call the corresponding file handler. */
|
|
|
2205 handler = Ffind_file_name_handler (filename, Qadd_name_to_file);
|
|
|
2206 if (!NILP (handler))
|
|
|
2207 RETURN_UNGCPRO (call4 (handler, Qadd_name_to_file, filename,
|
|
|
2208 newname, ok_if_already_exists));
|
|
|
2209
|
|
|
2210 /* If the new name has special constructs in it,
|
|
|
2211 call the corresponding file handler. */
|
|
|
2212 handler = Ffind_file_name_handler (newname, Qadd_name_to_file);
|
|
|
2213 if (!NILP (handler))
|
|
|
2214 RETURN_UNGCPRO (call4 (handler, Qadd_name_to_file, filename,
|
|
|
2215 newname, ok_if_already_exists));
|
|
|
2216
|
|
|
2217 if (NILP (ok_if_already_exists)
|
|
|
2218 || INTP (ok_if_already_exists))
|
|
|
2219 barf_or_query_if_file_exists (newname, "make it a new name",
|
|
|
2220 INTP (ok_if_already_exists), 0);
|
|
|
2221 #ifdef WINDOWSNT
|
|
|
2222 /* Windows does not support this operation. */
|
|
|
2223 report_file_error ("Adding new name", Flist (2, &filename));
|
|
|
2224 #else /* not WINDOWSNT */
|
|
|
2225
|
|
16
|
2226 unlink ((char *) XSTRING_DATA (newname));
|
|
|
2227 if (0 > link ((char *) XSTRING_DATA (filename),
|
|
|
2228 (char *) XSTRING_DATA (newname)))
|
|
0
|
2229 {
|
|
|
2230 report_file_error ("Adding new name",
|
|
|
2231 list2 (filename, newname));
|
|
|
2232 }
|
|
|
2233 #endif /* not WINDOWSNT */
|
|
|
2234
|
|
|
2235 UNGCPRO;
|
|
|
2236 return Qnil;
|
|
|
2237 }
|
|
|
2238
|
|
|
2239 #ifdef S_IFLNK
|
|
20
|
2240 DEFUN ("make-symbolic-link", Fmake_symbolic_link, 2, 3,
|
|
|
2241 "FMake symbolic link to file: \nFMake symbolic link to file %s: \np", /*
|
|
0
|
2242 Make a symbolic link to FILENAME, named LINKNAME. Both args strings.
|
|
|
2243 Signals a `file-already-exists' error if a file LINKNAME already exists
|
|
|
2244 unless optional third argument OK-IF-ALREADY-EXISTS is non-nil.
|
|
|
2245 A number as third arg means request confirmation if LINKNAME already exists.
|
|
|
2246 This happens for interactive use with M-x.
|
|
20
|
2247 */
|
|
|
2248 (filename, linkname, ok_if_already_exists))
|
|
0
|
2249 {
|
|
70
|
2250 /* This function can GC */
|
|
0
|
2251 Lisp_Object handler;
|
|
|
2252 struct gcpro gcpro1, gcpro2;
|
|
|
2253
|
|
|
2254 GCPRO2 (filename, linkname);
|
|
|
2255 CHECK_STRING (filename);
|
|
|
2256 CHECK_STRING (linkname);
|
|
|
2257 /* If the link target has a ~, we must expand it to get
|
|
|
2258 a truly valid file name. Otherwise, do not expand;
|
|
|
2259 we want to permit links to relative file names. */
|
|
82
|
2260 if (XSTRING_BYTE (filename, 0) == '~') /* #### Un*x-specific */
|
|
0
|
2261 filename = Fexpand_file_name (filename, Qnil);
|
|
|
2262 linkname = Fexpand_file_name (linkname, Qnil);
|
|
|
2263
|
|
|
2264 /* If the file name has special constructs in it,
|
|
|
2265 call the corresponding file handler. */
|
|
|
2266 handler = Ffind_file_name_handler (filename, Qmake_symbolic_link);
|
|
|
2267 if (!NILP (handler))
|
|
|
2268 RETURN_UNGCPRO (call4 (handler, Qmake_symbolic_link, filename, linkname,
|
|
|
2269 ok_if_already_exists));
|
|
|
2270
|
|
|
2271 /* If the new link name has special constructs in it,
|
|
|
2272 call the corresponding file handler. */
|
|
|
2273 handler = Ffind_file_name_handler (linkname, Qmake_symbolic_link);
|
|
|
2274 if (!NILP (handler))
|
|
|
2275 RETURN_UNGCPRO (call4 (handler, Qmake_symbolic_link, filename,
|
|
|
2276 linkname, ok_if_already_exists));
|
|
|
2277
|
|
|
2278 if (NILP (ok_if_already_exists)
|
|
|
2279 || INTP (ok_if_already_exists))
|
|
|
2280 barf_or_query_if_file_exists (linkname, "make it a link",
|
|
|
2281 INTP (ok_if_already_exists), 0);
|
|
|
2282
|
|
16
|
2283 unlink ((char *) XSTRING_DATA (linkname));
|
|
|
2284 if (0 > symlink ((char *) XSTRING_DATA (filename),
|
|
|
2285 (char *) XSTRING_DATA (linkname)))
|
|
0
|
2286 {
|
|
|
2287 report_file_error ("Making symbolic link",
|
|
|
2288 list2 (filename, linkname));
|
|
|
2289 }
|
|
|
2290 UNGCPRO;
|
|
|
2291 return Qnil;
|
|
|
2292 }
|
|
|
2293 #endif /* S_IFLNK */
|
|
|
2294
|
|
|
2295 #ifdef VMS
|
|
|
2296
|
|
20
|
2297 DEFUN ("define-logical-name", Fdefine_logical_name, 2, 2,
|
|
|
2298 "sDefine logical name: \nsDefine logical name %s as: ", /*
|
|
0
|
2299 Define the job-wide logical name NAME to have the value STRING.
|
|
|
2300 If STRING is nil or a null string, the logical name NAME is deleted.
|
|
20
|
2301 */
|
|
|
2302 (varname, string))
|
|
0
|
2303 {
|
|
|
2304 CHECK_STRING (varname);
|
|
|
2305 if (NILP (string))
|
|
16
|
2306 delete_logical_name ((char *) XSTRING_DATA (varname));
|
|
0
|
2307 else
|
|
|
2308 {
|
|
|
2309 CHECK_STRING (string);
|
|
|
2310
|
|
16
|
2311 if (XSTRING_LENGTH (string) == 0)
|
|
|
2312 delete_logical_name ((char *) XSTRING_DATA (varname));
|
|
0
|
2313 else
|
|
16
|
2314 define_logical_name ((char *) XSTRING_DATA (varname), (char *) XSTRING_DATA (string));
|
|
0
|
2315 }
|
|
|
2316
|
|
|
2317 return string;
|
|
|
2318 }
|
|
|
2319 #endif /* VMS */
|
|
|
2320
|
|
|
2321 #ifdef HPUX_NET
|
|
|
2322
|
|
20
|
2323 DEFUN ("sysnetunam", Fsysnetunam, 2, 2, 0, /*
|
|
0
|
2324 Open a network connection to PATH using LOGIN as the login string.
|
|
20
|
2325 */
|
|
|
2326 (path, login))
|
|
0
|
2327 {
|
|
|
2328 int netresult;
|
|
|
2329
|
|
|
2330 CHECK_STRING (path);
|
|
|
2331 CHECK_STRING (login);
|
|
|
2332
|
|
|
2333 /* netunam, being a strange-o system call only used once, is not
|
|
|
2334 encapsulated. */
|
|
|
2335 {
|
|
|
2336 char *path_ext;
|
|
|
2337 char *login_ext;
|
|
|
2338
|
|
|
2339 GET_C_STRING_FILENAME_DATA_ALLOCA (path, path_ext);
|
|
|
2340 GET_C_STRING_EXT_DATA_ALLOCA (login, FORMAT_OS, login_ext);
|
|
|
2341
|
|
|
2342 netresult = netunam (path_ext, login_ext);
|
|
|
2343 }
|
|
|
2344
|
|
|
2345 if (netresult == -1)
|
|
|
2346 return Qnil;
|
|
|
2347 else
|
|
|
2348 return Qt;
|
|
|
2349 }
|
|
|
2350 #endif /* HPUX_NET */
|
|
|
2351
|
|
20
|
2352 DEFUN ("file-name-absolute-p", Ffile_name_absolute_p, 1, 1, 0, /*
|
|
0
|
2353 Return t if file FILENAME specifies an absolute path name.
|
|
|
2354 On Unix, this is a name starting with a `/' or a `~'.
|
|
20
|
2355 */
|
|
|
2356 (filename))
|
|
0
|
2357 {
|
|
|
2358 Bufbyte *ptr;
|
|
|
2359
|
|
|
2360 CHECK_STRING (filename);
|
|
16
|
2361 ptr = XSTRING_DATA (filename);
|
|
0
|
2362 if (IS_DIRECTORY_SEP (*ptr) || *ptr == '~'
|
|
|
2363 #ifdef VMS
|
|
|
2364 /* ??? This criterion is probably wrong for '<'. */
|
|
|
2365 || strchr (ptr, ':') || strchr (ptr, '<')
|
|
|
2366 || (*ptr == '[' && (ptr[1] != '-' || (ptr[2] != '.' && ptr[2] != ']'))
|
|
|
2367 && ptr[1] != '.')
|
|
|
2368 #endif /* VMS */
|
|
|
2369 #ifdef DOS_NT
|
|
|
2370 || (*ptr != 0 && ptr[1] == ':' && (ptr[2] == '/' || ptr[2] == '\\'))
|
|
|
2371 #endif
|
|
|
2372 )
|
|
|
2373 return Qt;
|
|
|
2374 else
|
|
|
2375 return Qnil;
|
|
|
2376 }
|
|
|
2377
|
|
|
2378 /* Return nonzero if file FILENAME exists and can be executed. */
|
|
|
2379
|
|
|
2380 static int
|
|
|
2381 check_executable (char *filename)
|
|
|
2382 {
|
|
|
2383 #ifdef DOS_NT
|
|
|
2384 int len = strlen (filename);
|
|
|
2385 char *suffix;
|
|
|
2386 struct stat st;
|
|
|
2387 if (stat (filename, &st) < 0)
|
|
|
2388 return 0;
|
|
|
2389 return (S_ISREG (st.st_mode)
|
|
|
2390 && len >= 5
|
|
|
2391 && (stricmp ((suffix = filename + len-4), ".com") == 0
|
|
|
2392 || stricmp (suffix, ".exe") == 0
|
|
|
2393 || stricmp (suffix, ".bat") == 0)
|
|
|
2394 || (st.st_mode & S_IFMT) == S_IFDIR);
|
|
|
2395 #else /* not DOS_NT */
|
|
|
2396 #ifdef HAVE_EACCESS
|
|
|
2397 return (eaccess (filename, 1) >= 0);
|
|
|
2398 #else
|
|
|
2399 /* Access isn't quite right because it uses the real uid
|
|
|
2400 and we really want to test with the effective uid.
|
|
|
2401 But Unix doesn't give us a right way to do it. */
|
|
|
2402 return (access (filename, 1) >= 0);
|
|
|
2403 #endif
|
|
|
2404 #endif /* not DOS_NT */
|
|
|
2405 }
|
|
|
2406
|
|
|
2407 /* Return nonzero if file FILENAME exists and can be written. */
|
|
|
2408
|
|
|
2409 static int
|
|
|
2410 check_writable (CONST char *filename)
|
|
|
2411 {
|
|
|
2412 #ifdef MSDOS
|
|
|
2413 struct stat st;
|
|
|
2414 if (stat (filename, &st) < 0)
|
|
|
2415 return 0;
|
|
|
2416 return (st.st_mode & S_IWRITE || (st.st_mode & S_IFMT) == S_IFDIR);
|
|
|
2417 #else /* not MSDOS */
|
|
|
2418 #ifdef HAVE_EACCESS
|
|
|
2419 return (eaccess (filename, 2) >= 0);
|
|
|
2420 #else
|
|
|
2421 /* Access isn't quite right because it uses the real uid
|
|
|
2422 and we really want to test with the effective uid.
|
|
|
2423 But Unix doesn't give us a right way to do it.
|
|
|
2424 Opening with O_WRONLY could work for an ordinary file,
|
|
|
2425 but would lose for directories. */
|
|
|
2426 return (access (filename, 2) >= 0);
|
|
|
2427 #endif
|
|
|
2428 #endif /* not MSDOS */
|
|
|
2429 }
|
|
|
2430
|
|
20
|
2431 DEFUN ("file-exists-p", Ffile_exists_p, 1, 1, 0, /*
|
|
0
|
2432 Return t if file FILENAME exists. (This does not mean you can read it.)
|
|
|
2433 See also `file-readable-p' and `file-attributes'.
|
|
20
|
2434 */
|
|
|
2435 (filename))
|
|
0
|
2436 {
|
|
70
|
2437 /* This function can GC */
|
|
0
|
2438 Lisp_Object abspath;
|
|
|
2439 Lisp_Object handler;
|
|
|
2440 struct stat statbuf;
|
|
|
2441 struct gcpro gcpro1;
|
|
|
2442
|
|
70
|
2443 GCPRO1 (filename);
|
|
0
|
2444 CHECK_STRING (filename);
|
|
|
2445 abspath = Fexpand_file_name (filename, Qnil);
|
|
70
|
2446 UNGCPRO;
|
|
0
|
2447
|
|
|
2448 /* If the file name has special constructs in it,
|
|
|
2449 call the corresponding file handler. */
|
|
|
2450 GCPRO1 (abspath);
|
|
|
2451 handler = Ffind_file_name_handler (abspath, Qfile_exists_p);
|
|
|
2452 UNGCPRO;
|
|
|
2453 if (!NILP (handler))
|
|
|
2454 return call2 (handler, Qfile_exists_p, abspath);
|
|
|
2455
|
|
16
|
2456 if (stat ((char *) XSTRING_DATA (abspath), &statbuf) >= 0)
|
|
0
|
2457 return (Qt);
|
|
|
2458 else
|
|
|
2459 return (Qnil);
|
|
|
2460 }
|
|
|
2461
|
|
20
|
2462 DEFUN ("file-executable-p", Ffile_executable_p, 1, 1, 0, /*
|
|
0
|
2463 Return t if FILENAME can be executed by you.
|
|
|
2464 For a directory, this means you can access files in that directory.
|
|
20
|
2465 */
|
|
|
2466 (filename))
|
|
70
|
2467
|
|
0
|
2468 {
|
|
70
|
2469 /* This function can GC */
|
|
0
|
2470 Lisp_Object abspath;
|
|
|
2471 Lisp_Object handler;
|
|
|
2472 struct gcpro gcpro1;
|
|
|
2473
|
|
|
2474 GCPRO1 (filename);
|
|
|
2475 CHECK_STRING (filename);
|
|
|
2476 abspath = Fexpand_file_name (filename, Qnil);
|
|
|
2477 UNGCPRO;
|
|
|
2478
|
|
|
2479 /* If the file name has special constructs in it,
|
|
|
2480 call the corresponding file handler. */
|
|
|
2481 GCPRO1 (abspath);
|
|
|
2482 handler = Ffind_file_name_handler (abspath, Qfile_executable_p);
|
|
|
2483 UNGCPRO;
|
|
|
2484 if (!NILP (handler))
|
|
|
2485 return call2 (handler, Qfile_executable_p, abspath);
|
|
|
2486
|
|
16
|
2487 return (check_executable ((char *) XSTRING_DATA (abspath))
|
|
0
|
2488 ? Qt : Qnil);
|
|
|
2489 }
|
|
|
2490
|
|
20
|
2491 DEFUN ("file-readable-p", Ffile_readable_p, 1, 1, 0, /*
|
|
0
|
2492 Return t if file FILENAME exists and you can read it.
|
|
|
2493 See also `file-exists-p' and `file-attributes'.
|
|
20
|
2494 */
|
|
|
2495 (filename))
|
|
0
|
2496 {
|
|
70
|
2497 /* This function can GC */
|
|
0
|
2498 Lisp_Object abspath;
|
|
|
2499 Lisp_Object handler;
|
|
|
2500 int desc;
|
|
|
2501 struct gcpro gcpro1;
|
|
|
2502
|
|
70
|
2503 GCPRO1 (filename);
|
|
0
|
2504 CHECK_STRING (filename);
|
|
|
2505 abspath = Fexpand_file_name (filename, Qnil);
|
|
70
|
2506 UNGCPRO;
|
|
0
|
2507
|
|
|
2508 /* If the file name has special constructs in it,
|
|
|
2509 call the corresponding file handler. */
|
|
|
2510 GCPRO1 (abspath);
|
|
|
2511 handler = Ffind_file_name_handler (abspath, Qfile_readable_p);
|
|
|
2512 UNGCPRO;
|
|
|
2513 if (!NILP (handler))
|
|
|
2514 return call2 (handler, Qfile_readable_p, abspath);
|
|
|
2515
|
|
16
|
2516 desc = open ((char *) XSTRING_DATA (abspath), O_RDONLY, 0);
|
|
0
|
2517 if (desc < 0)
|
|
|
2518 return Qnil;
|
|
|
2519 close (desc);
|
|
|
2520 return Qt;
|
|
|
2521 }
|
|
|
2522
|
|
|
2523 /* Having this before file-symlink-p mysteriously caused it to be forgotten
|
|
|
2524 on the RT/PC. */
|
|
20
|
2525 DEFUN ("file-writable-p", Ffile_writable_p, 1, 1, 0, /*
|
|
0
|
2526 Return t if file FILENAME can be written or created by you.
|
|
20
|
2527 */
|
|
|
2528 (filename))
|
|
0
|
2529 {
|
|
70
|
2530 /* This function can GC */
|
|
0
|
2531 Lisp_Object abspath, dir;
|
|
|
2532 Lisp_Object handler;
|
|
|
2533 struct stat statbuf;
|
|
|
2534 struct gcpro gcpro1;
|
|
|
2535
|
|
70
|
2536 GCPRO1 (filename);
|
|
0
|
2537 CHECK_STRING (filename);
|
|
|
2538 abspath = Fexpand_file_name (filename, Qnil);
|
|
70
|
2539 UNGCPRO;
|
|
0
|
2540
|
|
|
2541 /* If the file name has special constructs in it,
|
|
|
2542 call the corresponding file handler. */
|
|
|
2543 GCPRO1 (abspath);
|
|
|
2544 handler = Ffind_file_name_handler (abspath, Qfile_writable_p);
|
|
|
2545 UNGCPRO;
|
|
|
2546 if (!NILP (handler))
|
|
|
2547 return call2 (handler, Qfile_writable_p, abspath);
|
|
|
2548
|
|
16
|
2549 if (stat ((char *) XSTRING_DATA (abspath), &statbuf) >= 0)
|
|
|
2550 return (check_writable ((char *) XSTRING_DATA (abspath))
|
|
0
|
2551 ? Qt : Qnil);
|
|
|
2552
|
|
|
2553
|
|
|
2554 dir = Ffile_name_directory (abspath);
|
|
|
2555 #if defined (VMS) || defined (MSDOS)
|
|
|
2556 if (!NILP (dir))
|
|
70
|
2557 dir = Fdirectory_file_name (dir);
|
|
0
|
2558 #endif /* VMS or MSDOS */
|
|
16
|
2559 return (check_writable (!NILP (dir) ? (char *) XSTRING_DATA (dir)
|
|
0
|
2560 : "")
|
|
|
2561 ? Qt : Qnil);
|
|
|
2562 }
|
|
|
2563
|
|
20
|
2564 DEFUN ("file-symlink-p", Ffile_symlink_p, 1, 1, 0, /*
|
|
0
|
2565 Return non-nil if file FILENAME is the name of a symbolic link.
|
|
|
2566 The value is the name of the file to which it is linked.
|
|
|
2567 Otherwise returns nil.
|
|
20
|
2568 */
|
|
|
2569 (filename))
|
|
0
|
2570 {
|
|
70
|
2571 /* This function can GC */
|
|
0
|
2572 #ifdef S_IFLNK
|
|
|
2573 char *buf;
|
|
|
2574 int bufsize;
|
|
|
2575 int valsize;
|
|
|
2576 Lisp_Object val;
|
|
|
2577 Lisp_Object handler;
|
|
|
2578 struct gcpro gcpro1;
|
|
|
2579
|
|
70
|
2580 GCPRO1 (filename);
|
|
0
|
2581 CHECK_STRING (filename);
|
|
|
2582 filename = Fexpand_file_name (filename, Qnil);
|
|
70
|
2583 UNGCPRO;
|
|
0
|
2584
|
|
|
2585 /* If the file name has special constructs in it,
|
|
|
2586 call the corresponding file handler. */
|
|
|
2587 handler = Ffind_file_name_handler (filename, Qfile_symlink_p);
|
|
|
2588 if (!NILP (handler))
|
|
|
2589 return call2 (handler, Qfile_symlink_p, filename);
|
|
|
2590
|
|
|
2591 bufsize = 100;
|
|
|
2592 while (1)
|
|
|
2593 {
|
|
|
2594 buf = (char *) xmalloc (bufsize);
|
|
|
2595 memset (buf, 0, bufsize);
|
|
16
|
2596 valsize = readlink ((char *) XSTRING_DATA (filename),
|
|
0
|
2597 buf, bufsize);
|
|
|
2598 if (valsize < bufsize) break;
|
|
|
2599 /* Buffer was not long enough */
|
|
|
2600 xfree (buf);
|
|
|
2601 bufsize *= 2;
|
|
|
2602 }
|
|
|
2603 if (valsize == -1)
|
|
|
2604 {
|
|
|
2605 xfree (buf);
|
|
|
2606 return Qnil;
|
|
|
2607 }
|
|
|
2608 val = make_string ((Bufbyte *) buf, valsize);
|
|
|
2609 xfree (buf);
|
|
|
2610 return val;
|
|
|
2611 #else /* not S_IFLNK */
|
|
|
2612 return Qnil;
|
|
|
2613 #endif /* not S_IFLNK */
|
|
|
2614 }
|
|
|
2615
|
|
20
|
2616 DEFUN ("file-directory-p", Ffile_directory_p, 1, 1, 0, /*
|
|
0
|
2617 Return t if file FILENAME is the name of a directory as a file.
|
|
|
2618 A directory name spec may be given instead; then the value is t
|
|
|
2619 if the directory so specified exists and really is a directory.
|
|
20
|
2620 */
|
|
|
2621 (filename))
|
|
0
|
2622 {
|
|
70
|
2623 /* This function can GC */
|
|
0
|
2624 Lisp_Object abspath;
|
|
|
2625 struct stat st;
|
|
|
2626 Lisp_Object handler;
|
|
|
2627 struct gcpro gcpro1;
|
|
|
2628
|
|
70
|
2629 GCPRO1 (filename);
|
|
0
|
2630 abspath = expand_and_dir_to_file (filename,
|
|
|
2631 current_buffer->directory);
|
|
|
2632 UNGCPRO;
|
|
|
2633
|
|
|
2634 /* If the file name has special constructs in it,
|
|
|
2635 call the corresponding file handler. */
|
|
|
2636 GCPRO1 (abspath);
|
|
|
2637 handler = Ffind_file_name_handler (abspath, Qfile_directory_p);
|
|
|
2638 UNGCPRO;
|
|
|
2639 if (!NILP (handler))
|
|
|
2640 return call2 (handler, Qfile_directory_p, abspath);
|
|
|
2641
|
|
16
|
2642 if (stat ((char *) XSTRING_DATA (abspath), &st) < 0)
|
|
0
|
2643 return Qnil;
|
|
|
2644 return (st.st_mode & S_IFMT) == S_IFDIR ? Qt : Qnil;
|
|
|
2645 }
|
|
|
2646
|
|
20
|
2647 DEFUN ("file-accessible-directory-p", Ffile_accessible_directory_p, 1, 1, 0, /*
|
|
0
|
2648 Return t if file FILENAME is the name of a directory as a file,
|
|
|
2649 and files in that directory can be opened by you. In order to use a
|
|
|
2650 directory as a buffer's current directory, this predicate must return true.
|
|
|
2651 A directory name spec may be given instead; then the value is t
|
|
|
2652 if the directory so specified exists and really is a readable and
|
|
|
2653 searchable directory.
|
|
20
|
2654 */
|
|
|
2655 (filename))
|
|
0
|
2656 {
|
|
70
|
2657 /* This function can GC */
|
|
0
|
2658 Lisp_Object handler;
|
|
70
|
2659 struct gcpro gcpro1;
|
|
0
|
2660
|
|
|
2661 /* If the file name has special constructs in it,
|
|
|
2662 call the corresponding file handler. */
|
|
|
2663 handler = Ffind_file_name_handler (filename, Qfile_accessible_directory_p);
|
|
|
2664 if (!NILP (handler))
|
|
|
2665 return call2 (handler, Qfile_accessible_directory_p,
|
|
|
2666 filename);
|
|
|
2667
|
|
70
|
2668 GCPRO1 (filename);
|
|
0
|
2669 if (NILP (Ffile_directory_p (filename)))
|
|
70
|
2670 {
|
|
|
2671 UNGCPRO;
|
|
0
|
2672 return (Qnil);
|
|
70
|
2673 }
|
|
|
2674 handler = Ffile_executable_p (filename);
|
|
|
2675 UNGCPRO;
|
|
|
2676 return (handler);
|
|
0
|
2677 }
|
|
|
2678
|
|
20
|
2679 DEFUN ("file-regular-p", Ffile_regular_p, 1, 1, 0, /*
|
|
0
|
2680 "Return t if file FILENAME is the name of a regular file.
|
|
|
2681 This is the sort of file that holds an ordinary stream of data bytes.
|
|
20
|
2682 */
|
|
|
2683 (filename))
|
|
0
|
2684 {
|
|
70
|
2685 REGISTER Lisp_Object abspath;
|
|
0
|
2686 struct stat st;
|
|
|
2687 Lisp_Object handler;
|
|
70
|
2688
|
|
0
|
2689 abspath = expand_and_dir_to_file (filename, current_buffer->directory);
|
|
|
2690
|
|
|
2691 /* If the file name has special constructs in it,
|
|
|
2692 call the corresponding file handler. */
|
|
|
2693 handler = Ffind_file_name_handler (abspath, Qfile_regular_p);
|
|
|
2694 if (!NILP (handler))
|
|
|
2695 return call2 (handler, Qfile_regular_p, abspath);
|
|
|
2696
|
|
16
|
2697 if (stat ((char *) XSTRING_DATA (abspath), &st) < 0)
|
|
0
|
2698 return Qnil;
|
|
|
2699 return (st.st_mode & S_IFMT) == S_IFREG ? Qt : Qnil;
|
|
|
2700 }
|
|
|
2701
|
|
20
|
2702 DEFUN ("file-modes", Ffile_modes, 1, 1, 0, /*
|
|
0
|
2703 Return mode bits of FILE, as an integer.
|
|
20
|
2704 */
|
|
|
2705 (filename))
|
|
0
|
2706 {
|
|
70
|
2707 /* This function can GC */
|
|
0
|
2708 Lisp_Object abspath;
|
|
|
2709 struct stat st;
|
|
|
2710 Lisp_Object handler;
|
|
|
2711 struct gcpro gcpro1;
|
|
|
2712
|
|
70
|
2713 GCPRO1 (filename);
|
|
0
|
2714 abspath = expand_and_dir_to_file (filename,
|
|
|
2715 current_buffer->directory);
|
|
|
2716 UNGCPRO;
|
|
|
2717
|
|
|
2718 /* If the file name has special constructs in it,
|
|
|
2719 call the corresponding file handler. */
|
|
|
2720 GCPRO1 (abspath);
|
|
|
2721 handler = Ffind_file_name_handler (abspath, Qfile_modes);
|
|
|
2722 UNGCPRO;
|
|
|
2723 if (!NILP (handler))
|
|
|
2724 return call2 (handler, Qfile_modes, abspath);
|
|
|
2725
|
|
16
|
2726 if (stat ((char *) XSTRING_DATA (abspath), &st) < 0)
|
|
0
|
2727 return Qnil;
|
|
|
2728 #ifdef DOS_NT
|
|
100
|
2729 if (check_executable (XSTRING (abspath)->_data))
|
|
0
|
2730 st.st_mode |= S_IEXEC;
|
|
|
2731 #endif /* DOS_NT */
|
|
|
2732
|
|
|
2733 return make_int (st.st_mode & 07777);
|
|
|
2734 }
|
|
|
2735
|
|
20
|
2736 DEFUN ("set-file-modes", Fset_file_modes, 2, 2, 0, /*
|
|
0
|
2737 Set mode bits of FILE to MODE (an integer).
|
|
|
2738 Only the 12 low bits of MODE are used.
|
|
20
|
2739 */
|
|
|
2740 (filename, mode))
|
|
0
|
2741 {
|
|
70
|
2742 /* This function can GC */
|
|
0
|
2743 Lisp_Object abspath;
|
|
|
2744 Lisp_Object handler;
|
|
70
|
2745 struct gcpro gcpro1, gcpro2;
|
|
0
|
2746
|
|
70
|
2747 GCPRO2 (filename, mode);
|
|
0
|
2748 abspath = Fexpand_file_name (filename, current_buffer->directory);
|
|
70
|
2749 CHECK_INT (mode);
|
|
44
|
2750 UNGCPRO;
|
|
|
2751
|
|
0
|
2752 /* If the file name has special constructs in it,
|
|
|
2753 call the corresponding file handler. */
|
|
|
2754 GCPRO1 (abspath);
|
|
|
2755 handler = Ffind_file_name_handler (abspath, Qset_file_modes);
|
|
|
2756 UNGCPRO;
|
|
|
2757 if (!NILP (handler))
|
|
|
2758 return call3 (handler, Qset_file_modes, abspath, mode);
|
|
|
2759
|
|
16
|
2760 if (chmod ((char *) XSTRING_DATA (abspath), XINT (mode)) < 0)
|
|
0
|
2761 report_file_error ("Doing chmod", Fcons (abspath, Qnil));
|
|
|
2762
|
|
|
2763 return Qnil;
|
|
|
2764 }
|
|
|
2765
|
|
20
|
2766 DEFUN ("set-default-file-modes", Fset_default_file_modes, 1, 1, 0, /*
|
|
0
|
2767 Set the file permission bits for newly created files.
|
|
|
2768 MASK should be an integer; if a permission's bit in MASK is 1,
|
|
|
2769 subsequently created files will not have that permission enabled.
|
|
|
2770 Only the low 9 bits are used.
|
|
|
2771 This setting is inherited by subprocesses.
|
|
20
|
2772 */
|
|
|
2773 (mode))
|
|
0
|
2774 {
|
|
|
2775 CHECK_INT (mode);
|
|
|
2776
|
|
|
2777 umask ((~ XINT (mode)) & 0777);
|
|
|
2778
|
|
|
2779 return Qnil;
|
|
|
2780 }
|
|
|
2781
|
|
20
|
2782 DEFUN ("default-file-modes", Fdefault_file_modes, 0, 0, 0, /*
|
|
0
|
2783 Return the default file protection for created files.
|
|
|
2784 The umask value determines which permissions are enabled in newly
|
|
|
2785 created files. If a permission's bit in the umask is 1, subsequently
|
|
|
2786 created files will not have that permission enabled.
|
|
20
|
2787 */
|
|
|
2788 ())
|
|
0
|
2789 {
|
|
|
2790 int mode;
|
|
|
2791
|
|
|
2792 mode = umask (0);
|
|
|
2793 umask (mode);
|
|
|
2794
|
|
|
2795 return make_int ((~ mode) & 0777);
|
|
|
2796 }
|
|
|
2797
|
|
|
2798 #ifndef VMS
|
|
20
|
2799 DEFUN ("unix-sync", Funix_sync, 0, 0, "", /*
|
|
0
|
2800 Tell Unix to finish all pending disk updates.
|
|
20
|
2801 */
|
|
|
2802 ())
|
|
0
|
2803 {
|
|
100
|
2804 #ifndef WINDOWSNT
|
|
0
|
2805 sync ();
|
|
100
|
2806 #endif
|
|
0
|
2807 return Qnil;
|
|
|
2808 }
|
|
|
2809 #endif /* !VMS */
|
|
|
2810
|
|
|
2811
|
|
20
|
2812 DEFUN ("file-newer-than-file-p", Ffile_newer_than_file_p, 2, 2, 0, /*
|
|
0
|
2813 Return t if file FILE1 is newer than file FILE2.
|
|
|
2814 If FILE1 does not exist, the answer is nil;
|
|
|
2815 otherwise, if FILE2 does not exist, the answer is t.
|
|
20
|
2816 */
|
|
|
2817 (file1, file2))
|
|
0
|
2818 {
|
|
70
|
2819 /* This function can GC */
|
|
0
|
2820 Lisp_Object abspath1, abspath2;
|
|
|
2821 struct stat st;
|
|
|
2822 int mtime1;
|
|
|
2823 Lisp_Object handler;
|
|
70
|
2824 struct gcpro gcpro1, gcpro2;
|
|
0
|
2825
|
|
|
2826 CHECK_STRING (file1);
|
|
|
2827 CHECK_STRING (file2);
|
|
|
2828
|
|
|
2829 abspath1 = Qnil;
|
|
70
|
2830 GCPRO2 (abspath1, file2);
|
|
|
2831 abspath1 = expand_and_dir_to_file (file1,
|
|
|
2832 current_buffer->directory);
|
|
|
2833 abspath2 = expand_and_dir_to_file (file2,
|
|
|
2834 current_buffer->directory);
|
|
|
2835 UNGCPRO;
|
|
0
|
2836
|
|
|
2837 /* If the file name has special constructs in it,
|
|
|
2838 call the corresponding file handler. */
|
|
70
|
2839 GCPRO2 (abspath1, abspath2);
|
|
0
|
2840 handler = Ffind_file_name_handler (abspath1, Qfile_newer_than_file_p);
|
|
|
2841 if (NILP (handler))
|
|
|
2842 handler = Ffind_file_name_handler (abspath2, Qfile_newer_than_file_p);
|
|
|
2843 UNGCPRO;
|
|
|
2844 if (!NILP (handler))
|
|
|
2845 return call3 (handler, Qfile_newer_than_file_p, abspath1,
|
|
|
2846 abspath2);
|
|
|
2847
|
|
16
|
2848 if (stat ((char *) XSTRING_DATA (abspath1), &st) < 0)
|
|
0
|
2849 return Qnil;
|
|
|
2850
|
|
|
2851 mtime1 = st.st_mtime;
|
|
|
2852
|
|
16
|
2853 if (stat ((char *) XSTRING_DATA (abspath2), &st) < 0)
|
|
0
|
2854 return Qt;
|
|
|
2855
|
|
|
2856 return (mtime1 > st.st_mtime) ? Qt : Qnil;
|
|
|
2857 }
|
|
|
2858
|
|
|
2859
|
|
|
2860 #ifdef DOS_NT
|
|
|
2861 Lisp_Object Qfind_buffer_file_type;
|
|
|
2862 #endif /* DOS_NT */
|
|
|
2863
|
|
2
|
2864 /* Stack sizes > 2**16 is a good way to elicit compiler bugs */
|
|
|
2865 /* #define READ_BUF_SIZE (2 << 16) */
|
|
|
2866 #define READ_BUF_SIZE (1 << 15)
|
|
0
|
2867
|
|
20
|
2868 DEFUN ("insert-file-contents-internal",
|
|
70
|
2869 Finsert_file_contents_internal, 1, 7, 0, /*
|
|
|
2870 Insert contents of file FILENAME after point; no coding-system frobbing.
|
|
|
2871 This function is identical to `insert-file-contents' except for the
|
|
|
2872 handling of the CODESYS and USED-CODESYS arguments under
|
|
|
2873 XEmacs/Mule. (When Mule support is not present, both functions are
|
|
|
2874 identical and ignore the CODESYS and USED-CODESYS arguments.)
|
|
|
2875
|
|
|
2876 If support for Mule exists in this Emacs, the file is decoded according
|
|
|
2877 to CODESYS; if omitted, no conversion happens. If USED-CODESYS is non-nil,
|
|
|
2878 it should be a symbol, and the actual coding system that was used for the
|
|
|
2879 decoding is stored into it. It will in general be different from CODESYS
|
|
|
2880 if CODESYS specifies automatic encoding detection or end-of-line detection.
|
|
|
2881
|
|
|
2882 Currently BEG and END refer to byte positions (as opposed to character
|
|
|
2883 positions), even in Mule. (Fixing this is very difficult.)
|
|
20
|
2884 */
|
|
70
|
2885 (filename, visit, beg, end, replace, codesys, used_codesys))
|
|
0
|
2886 {
|
|
70
|
2887 /* This function can GC */
|
|
0
|
2888 struct stat st;
|
|
|
2889 int fd;
|
|
|
2890 int saverrno = 0;
|
|
|
2891 Charcount inserted = 0;
|
|
|
2892 int speccount;
|
|
70
|
2893 struct gcpro gcpro1, gcpro2, gcpro3, gcpro4;
|
|
0
|
2894 Lisp_Object handler = Qnil, val;
|
|
|
2895 int total;
|
|
|
2896 Bufbyte read_buf[READ_BUF_SIZE];
|
|
|
2897 int mc_count;
|
|
|
2898 struct buffer *buf = current_buffer;
|
|
|
2899 int not_regular = 0;
|
|
|
2900
|
|
|
2901 if (buf->base_buffer && ! NILP (visit))
|
|
|
2902 error ("Cannot do file visiting in an indirect buffer");
|
|
|
2903
|
|
|
2904 /* No need to call Fbarf_if_buffer_read_only() here.
|
|
|
2905 That's called in begin_multiple_change() or wherever. */
|
|
|
2906
|
|
|
2907 val = Qnil;
|
|
|
2908
|
|
70
|
2909 GCPRO4 (filename, val, visit, handler);
|
|
0
|
2910
|
|
|
2911 mc_count = (NILP (replace)) ?
|
|
|
2912 begin_multiple_change (buf, BUF_PT (buf), BUF_PT (buf)) :
|
|
|
2913 begin_multiple_change (buf, BUF_BEG (buf), BUF_Z (buf));
|
|
|
2914
|
|
|
2915 speccount = specpdl_depth (); /* begin_multiple_change also adds
|
|
|
2916 an unwind_protect */
|
|
|
2917
|
|
|
2918 filename = Fexpand_file_name (filename, Qnil);
|
|
|
2919
|
|
|
2920 /* If the file name has special constructs in it,
|
|
|
2921 call the corresponding file handler. */
|
|
|
2922 handler = Ffind_file_name_handler (filename, Qinsert_file_contents);
|
|
|
2923 if (!NILP (handler))
|
|
|
2924 {
|
|
74
|
2925 val = call6 (handler, Qinsert_file_contents, filename,
|
|
|
2926 visit, beg, end, replace);
|
|
0
|
2927 goto handled;
|
|
|
2928 }
|
|
|
2929
|
|
70
|
2930 #ifdef MULE
|
|
|
2931 if (!NILP (used_codesys))
|
|
|
2932 CHECK_SYMBOL (used_codesys);
|
|
|
2933 #endif
|
|
|
2934
|
|
0
|
2935 if ( (!NILP (beg) || !NILP (end)) && !NILP (visit) )
|
|
|
2936 error ("Attempt to visit less than an entire file");
|
|
|
2937
|
|
|
2938 if (!NILP (beg))
|
|
|
2939 CHECK_INT (beg);
|
|
|
2940 else
|
|
|
2941 beg = Qzero;
|
|
|
2942
|
|
|
2943 if (!NILP (end))
|
|
|
2944 CHECK_INT (end);
|
|
|
2945
|
|
|
2946 fd = -1;
|
|
|
2947
|
|
|
2948 #ifndef APOLLO
|
|
16
|
2949 if (stat ((char *) XSTRING_DATA (filename), &st) < 0)
|
|
0
|
2950 #else /* APOLLO */
|
|
16
|
2951 if ((fd = open ((char *) XSTRING_DATA (filename), O_RDONLY, 0)) < 0
|
|
0
|
2952 || fstat (fd, &st) < 0)
|
|
|
2953 #endif /* APOLLO */
|
|
|
2954 {
|
|
|
2955 if (fd >= 0) close (fd);
|
|
|
2956 badopen:
|
|
|
2957 if (NILP (visit))
|
|
|
2958 report_file_error ("Opening input file",
|
|
|
2959 Fcons (filename, Qnil));
|
|
|
2960 st.st_mtime = -1;
|
|
|
2961 goto notfound;
|
|
|
2962 }
|
|
|
2963
|
|
|
2964 #ifdef S_IFREG
|
|
|
2965 /* This code will need to be changed in order to work on named
|
|
|
2966 pipes, and it's probably just not worth it. So we should at
|
|
|
2967 least signal an error. */
|
|
|
2968 if (!S_ISREG (st.st_mode))
|
|
|
2969 {
|
|
|
2970 if (NILP (visit))
|
|
|
2971 {
|
|
|
2972 end_multiple_change (buf, mc_count);
|
|
|
2973
|
|
|
2974 return Fsignal (Qfile_error,
|
|
|
2975 list2 (build_translated_string("not a regular file"),
|
|
|
2976 filename));
|
|
|
2977 }
|
|
|
2978 else
|
|
|
2979 {
|
|
|
2980 not_regular = 1;
|
|
|
2981 goto notfound;
|
|
|
2982 }
|
|
|
2983 }
|
|
|
2984 #endif
|
|
|
2985
|
|
|
2986 if (fd < 0)
|
|
16
|
2987 if ((fd = open ((char *) XSTRING_DATA (filename), O_RDONLY, 0)) < 0)
|
|
0
|
2988 goto badopen;
|
|
|
2989
|
|
|
2990 /* Replacement should preserve point as it preserves markers. */
|
|
|
2991 if (!NILP (replace))
|
|
|
2992 record_unwind_protect (restore_point_unwind, Fpoint_marker (Qnil, Qnil));
|
|
|
2993
|
|
|
2994 record_unwind_protect (close_file_unwind, make_int (fd));
|
|
|
2995
|
|
|
2996 /* Supposedly happens on VMS. */
|
|
|
2997 if (st.st_size < 0)
|
|
|
2998 error ("File size is negative");
|
|
|
2999
|
|
|
3000 if (NILP (end))
|
|
|
3001 {
|
|
|
3002 end = make_int (st.st_size);
|
|
|
3003 if (XINT (end) != st.st_size)
|
|
|
3004 error ("maximum buffer size exceeded");
|
|
|
3005 }
|
|
|
3006
|
|
|
3007 /* If requested, replace the accessible part of the buffer
|
|
|
3008 with the file contents. Avoid replacing text at the
|
|
|
3009 beginning or end of the buffer that matches the file contents;
|
|
|
3010 that preserves markers pointing to the unchanged parts. */
|
|
16
|
3011 #if !defined (DOS_NT) && !defined (MULE)
|
|
0
|
3012 /* The replace-mode code currently only works when the assumption
|
|
|
3013 'one byte == one char' holds true. This fails under MSDOS and
|
|
|
3014 Windows NT (because newlines are represented as CR-LF in text
|
|
20
|
3015 files) and under Mule because files may contain multibyte characters. */
|
|
0
|
3016 # define FSFMACS_SPEEDY_INSERT
|
|
|
3017 #endif
|
|
|
3018 #ifndef FSFMACS_SPEEDY_INSERT
|
|
|
3019 if (!NILP (replace))
|
|
|
3020 {
|
|
|
3021 buffer_delete_range (buf, BUF_BEG (buf), BUF_Z (buf),
|
|
|
3022 !NILP (visit) ? INSDEL_NO_LOCKING : 0);
|
|
|
3023 }
|
|
|
3024 #else /* FSFMACS_SPEEDY_INSERT */
|
|
|
3025 if (!NILP (replace))
|
|
|
3026 {
|
|
|
3027 char buffer[1 << 14];
|
|
|
3028 Bufpos same_at_start = BUF_BEGV (buf);
|
|
|
3029 Bufpos same_at_end = BUF_ZV (buf);
|
|
|
3030 int overlap;
|
|
|
3031
|
|
|
3032 /* Count how many chars at the start of the file
|
|
|
3033 match the text at the beginning of the buffer. */
|
|
|
3034 while (1)
|
|
|
3035 {
|
|
|
3036 int nread;
|
|
|
3037 Bufpos bufpos;
|
|
|
3038
|
|
|
3039 nread = read_allowing_quit (fd, buffer, sizeof buffer);
|
|
|
3040 if (nread < 0)
|
|
|
3041 error ("IO error reading %s: %s",
|
|
16
|
3042 XSTRING_DATA (filename), strerror (errno));
|
|
0
|
3043 else if (nread == 0)
|
|
|
3044 break;
|
|
|
3045 bufpos = 0;
|
|
|
3046 while (bufpos < nread && same_at_start < BUF_ZV (buf)
|
|
|
3047 && BUF_FETCH_CHAR (buf, same_at_start) == buffer[bufpos])
|
|
|
3048 same_at_start++, bufpos++;
|
|
|
3049 /* If we found a discrepancy, stop the scan.
|
|
|
3050 Otherwise loop around and scan the next bufferfull. */
|
|
|
3051 if (bufpos != nread)
|
|
|
3052 break;
|
|
|
3053 }
|
|
|
3054 /* If the file matches the buffer completely,
|
|
|
3055 there's no need to replace anything. */
|
|
|
3056 if (same_at_start - BUF_BEGV (buf) == st.st_size)
|
|
|
3057 {
|
|
|
3058 close (fd);
|
|
|
3059 unbind_to (speccount, Qnil);
|
|
|
3060 /* Truncate the buffer to the size of the file. */
|
|
|
3061 buffer_delete_range (buf, same_at_start, same_at_end,
|
|
|
3062 !NILP (visit) ? INSDEL_NO_LOCKING : 0);
|
|
|
3063 goto handled;
|
|
|
3064 }
|
|
|
3065 /* Count how many chars at the end of the file
|
|
|
3066 match the text at the end of the buffer. */
|
|
|
3067 while (1)
|
|
|
3068 {
|
|
|
3069 int total_read, nread;
|
|
|
3070 Bufpos bufpos, curpos, trial;
|
|
|
3071
|
|
|
3072 /* At what file position are we now scanning? */
|
|
|
3073 curpos = st.st_size - (BUF_ZV (buf) - same_at_end);
|
|
|
3074 /* If the entire file matches the buffer tail, stop the scan. */
|
|
|
3075 if (curpos == 0)
|
|
|
3076 break;
|
|
|
3077 /* How much can we scan in the next step? */
|
|
|
3078 trial = min (curpos, sizeof buffer);
|
|
|
3079 if (lseek (fd, curpos - trial, 0) < 0)
|
|
|
3080 report_file_error ("Setting file position",
|
|
|
3081 Fcons (filename, Qnil));
|
|
|
3082
|
|
|
3083 total_read = 0;
|
|
|
3084 while (total_read < trial)
|
|
|
3085 {
|
|
|
3086 nread = read_allowing_quit (fd, buffer + total_read,
|
|
|
3087 trial - total_read);
|
|
|
3088 if (nread <= 0)
|
|
|
3089 error ("IO error reading %s: %s",
|
|
16
|
3090 XSTRING_DATA (filename), strerror (errno));
|
|
0
|
3091 total_read += nread;
|
|
|
3092 }
|
|
|
3093 /* Scan this bufferfull from the end, comparing with
|
|
|
3094 the Emacs buffer. */
|
|
|
3095 bufpos = total_read;
|
|
|
3096 /* Compare with same_at_start to avoid counting some buffer text
|
|
|
3097 as matching both at the file's beginning and at the end. */
|
|
|
3098 while (bufpos > 0 && same_at_end > same_at_start
|
|
|
3099 && BUF_FETCH_CHAR (buf, same_at_end - 1) ==
|
|
|
3100 buffer[bufpos - 1])
|
|
|
3101 same_at_end--, bufpos--;
|
|
|
3102 /* If we found a discrepancy, stop the scan.
|
|
|
3103 Otherwise loop around and scan the preceding bufferfull. */
|
|
|
3104 if (bufpos != 0)
|
|
|
3105 break;
|
|
|
3106 /* If display current starts at beginning of line,
|
|
|
3107 keep it that way. */
|
|
|
3108 if (XBUFFER (XWINDOW (Fselected_window (Qnil))->buffer) == buf)
|
|
|
3109 XWINDOW (Fselected_window (Qnil))->start_at_line_beg =
|
|
|
3110 !NILP (Fbolp (make_buffer (buf)));
|
|
|
3111 }
|
|
|
3112
|
|
|
3113 /* Don't try to reuse the same piece of text twice. */
|
|
|
3114 overlap = same_at_start - BUF_BEGV (buf) -
|
|
|
3115 (same_at_end + st.st_size - BUF_ZV (buf));
|
|
|
3116 if (overlap > 0)
|
|
|
3117 same_at_end += overlap;
|
|
|
3118
|
|
|
3119 /* Arrange to read only the nonmatching middle part of the file. */
|
|
|
3120 beg = make_int (same_at_start - BUF_BEGV (buf));
|
|
|
3121 end = make_int (st.st_size - (BUF_ZV (buf) - same_at_end));
|
|
|
3122
|
|
|
3123 buffer_delete_range (buf, same_at_start, same_at_end,
|
|
|
3124 !NILP (visit) ? INSDEL_NO_LOCKING : 0);
|
|
|
3125 /* Insert from the file at the proper position. */
|
|
|
3126 BUF_SET_PT (buf, same_at_start);
|
|
|
3127 }
|
|
|
3128 #endif /* FSFMACS_SPEEDY_INSERT */
|
|
|
3129
|
|
|
3130 total = XINT (end) - XINT (beg);
|
|
|
3131
|
|
|
3132 if (XINT (beg) != 0
|
|
|
3133 #ifdef FSFMACS_SPEEDY_INSERT
|
|
|
3134 /* why was this here? asked jwz. The reason is that the replace-mode
|
|
|
3135 connivings above will normally put the file pointer other than
|
|
|
3136 where it should be. */
|
|
|
3137 || !NILP (replace)
|
|
|
3138 #endif /* !FSFMACS_SPEEDY_INSERT */
|
|
|
3139 )
|
|
|
3140 {
|
|
|
3141 if (lseek (fd, XINT (beg), 0) < 0)
|
|
|
3142 report_file_error ("Setting file position",
|
|
|
3143 Fcons (filename, Qnil));
|
|
|
3144 }
|
|
|
3145
|
|
|
3146 {
|
|
|
3147 Bufpos cur_point = BUF_PT (buf);
|
|
|
3148 struct gcpro ngcpro1;
|
|
|
3149 Lisp_Object stream = make_filedesc_input_stream (fd, 0, total,
|
|
|
3150 LSTR_ALLOW_QUIT);
|
|
|
3151
|
|
|
3152 NGCPRO1 (stream);
|
|
|
3153 Lstream_set_buffering (XLSTREAM (stream), LSTREAM_BLOCKN_BUFFERED, 65536);
|
|
70
|
3154 #ifdef MULE
|
|
|
3155 stream = make_decoding_input_stream
|
|
|
3156 (XLSTREAM (stream), Fget_coding_system (codesys));
|
|
|
3157 Lstream_set_character_mode (XLSTREAM (stream));
|
|
|
3158 Lstream_set_buffering (XLSTREAM (stream), LSTREAM_BLOCKN_BUFFERED, 65536);
|
|
|
3159 #endif
|
|
0
|
3160
|
|
|
3161 record_unwind_protect (close_stream_unwind, stream);
|
|
|
3162
|
|
16
|
3163 /* No need to limit the amount of stuff we attempt to read. (It would
|
|
|
3164 be incorrect, anyway, when Mule is enabled.) Instead, the limiting
|
|
|
3165 occurs inside of the filedesc stream. */
|
|
0
|
3166 while (1)
|
|
|
3167 {
|
|
|
3168 Bytecount this_len;
|
|
|
3169 Charcount cc_inserted;
|
|
|
3170
|
|
|
3171 QUIT;
|
|
|
3172 this_len = Lstream_read (XLSTREAM (stream), read_buf,
|
|
|
3173 sizeof (read_buf));
|
|
|
3174
|
|
|
3175 if (this_len <= 0)
|
|
|
3176 {
|
|
|
3177 if (this_len < 0)
|
|
|
3178 saverrno = errno;
|
|
|
3179 break;
|
|
|
3180 }
|
|
|
3181
|
|
|
3182 cc_inserted = buffer_insert_raw_string_1 (buf, cur_point, read_buf,
|
|
|
3183 this_len,
|
|
|
3184 !NILP (visit)
|
|
|
3185 ? INSDEL_NO_LOCKING : 0);
|
|
|
3186 inserted += cc_inserted;
|
|
|
3187 cur_point += cc_inserted;
|
|
|
3188 }
|
|
70
|
3189 #ifdef MULE
|
|
|
3190 if (!NILP (used_codesys))
|
|
|
3191 {
|
|
|
3192 Fset (used_codesys,
|
|
|
3193 XCODING_SYSTEM_NAME (decoding_stream_coding_system (XLSTREAM (stream))));
|
|
|
3194 }
|
|
|
3195 #endif
|
|
0
|
3196 NUNGCPRO;
|
|
|
3197 }
|
|
|
3198
|
|
100
|
3199 #if 0
|
|
|
3200 /* XXXX Why the #### ? Bogus anyway. If they are there, display em! */
|
|
0
|
3201 #ifdef DOS_NT
|
|
|
3202 /* Determine file type from name and remove LFs from CR-LFs if the file
|
|
|
3203 is deemed to be a text file. */
|
|
|
3204 {
|
|
|
3205 struct gcpro gcpro1;
|
|
|
3206 GCPRO1 (filename);
|
|
|
3207 buf->buffer_file_type
|
|
|
3208 = call1_in_buffer (buf, Qfind_buffer_file_type, filename);
|
|
|
3209 UNGCPRO;
|
|
|
3210 if (NILP (buf->buffer_file_type))
|
|
|
3211 {
|
|
|
3212 buffer_do_msdos_crlf_to_lf (buf, ####);
|
|
|
3213 }
|
|
|
3214 }
|
|
|
3215 #endif
|
|
100
|
3216 #endif
|
|
0
|
3217
|
|
|
3218 /* Close the file/stream */
|
|
|
3219 unbind_to (speccount, Qnil);
|
|
|
3220
|
|
|
3221 if (saverrno != 0)
|
|
|
3222 {
|
|
|
3223 error ("IO error reading %s: %s",
|
|
16
|
3224 XSTRING_DATA (filename), strerror (saverrno));
|
|
0
|
3225 }
|
|
|
3226
|
|
|
3227 notfound:
|
|
|
3228 handled:
|
|
|
3229
|
|
|
3230 end_multiple_change (buf, mc_count);
|
|
|
3231
|
|
|
3232 if (!NILP (visit))
|
|
|
3233 {
|
|
|
3234 if (!EQ (buf->undo_list, Qt))
|
|
|
3235 buf->undo_list = Qnil;
|
|
|
3236 #ifdef APOLLO
|
|
16
|
3237 stat ((char *) XSTRING_DATA (filename), &st);
|
|
0
|
3238 #endif
|
|
|
3239 if (NILP (handler))
|
|
|
3240 {
|
|
|
3241 buf->modtime = st.st_mtime;
|
|
|
3242 buf->filename = filename;
|
|
|
3243 /* XEmacs addition: */
|
|
|
3244 /* This function used to be in C, ostensibly so that
|
|
|
3245 it could be called here. But that's just silly.
|
|
|
3246 There's no reason C code can't call out to Lisp
|
|
|
3247 code, and it's a lot cleaner this way. */
|
|
|
3248 if (!NILP (Ffboundp (Qcompute_buffer_file_truename)))
|
|
|
3249 call1 (Qcompute_buffer_file_truename, make_buffer (buf));
|
|
|
3250 }
|
|
|
3251 BUF_SAVE_MODIFF (buf) = BUF_MODIFF (buf);
|
|
|
3252 buf->auto_save_modified = BUF_MODIFF (buf);
|
|
|
3253 buf->save_length = make_int (BUF_SIZE (buf));
|
|
|
3254 #ifdef CLASH_DETECTION
|
|
|
3255 if (NILP (handler))
|
|
|
3256 {
|
|
|
3257 if (!NILP (buf->file_truename))
|
|
|
3258 unlock_file (buf->file_truename);
|
|
|
3259 unlock_file (filename);
|
|
|
3260 }
|
|
|
3261 #endif /* CLASH_DETECTION */
|
|
|
3262 if (not_regular)
|
|
|
3263 RETURN_UNGCPRO (Fsignal (Qfile_error,
|
|
|
3264 list2 (build_string ("not a regular file"),
|
|
|
3265 filename)));
|
|
|
3266
|
|
|
3267 /* If visiting nonexistent file, return nil. */
|
|
|
3268 if (buf->modtime == -1)
|
|
|
3269 report_file_error ("Opening input file",
|
|
|
3270 list1 (filename));
|
|
|
3271 }
|
|
|
3272
|
|
|
3273 /* Decode file format */
|
|
|
3274 if (inserted > 0)
|
|
|
3275 {
|
|
|
3276 Lisp_Object insval = call3 (Qformat_decode,
|
|
|
3277 Qnil, make_int (inserted), visit);
|
|
|
3278 CHECK_INT (insval);
|
|
|
3279 inserted = XINT (insval);
|
|
|
3280 }
|
|
|
3281
|
|
|
3282 if (inserted > 0)
|
|
|
3283 {
|
|
|
3284 Lisp_Object p = Vafter_insert_file_functions;
|
|
|
3285 struct gcpro ngcpro1;
|
|
|
3286
|
|
|
3287 NGCPRO1 (p);
|
|
|
3288 while (!NILP (p))
|
|
|
3289 {
|
|
|
3290 Lisp_Object insval =
|
|
|
3291 call1 (Fcar (p), make_int (inserted));
|
|
|
3292 if (!NILP (insval))
|
|
|
3293 {
|
|
|
3294 CHECK_NATNUM (insval);
|
|
|
3295 inserted = XINT (insval);
|
|
|
3296 }
|
|
|
3297 QUIT;
|
|
|
3298 p = Fcdr (p);
|
|
|
3299 }
|
|
|
3300 NUNGCPRO;
|
|
|
3301 }
|
|
|
3302
|
|
|
3303 UNGCPRO;
|
|
|
3304
|
|
|
3305 if (!NILP (val))
|
|
|
3306 return (val);
|
|
|
3307 else
|
|
|
3308 return (list2 (filename, make_int (inserted)));
|
|
|
3309 }
|
|
|
3310
|
|
|
3311
|
|
|
3312 static int a_write (Lisp_Object outstream, Lisp_Object instream, int pos,
|
|
|
3313 Lisp_Object *annot);
|
|
|
3314 static Lisp_Object build_annotations (Lisp_Object start, Lisp_Object end);
|
|
|
3315
|
|
|
3316 /* If build_annotations switched buffers, switch back to BUF.
|
|
|
3317 Kill the temporary buffer that was selected in the meantime. */
|
|
|
3318
|
|
|
3319 static Lisp_Object
|
|
|
3320 build_annotations_unwind (Lisp_Object buf)
|
|
|
3321 {
|
|
|
3322 Lisp_Object tembuf;
|
|
|
3323
|
|
|
3324 if (XBUFFER (buf) == current_buffer)
|
|
|
3325 return Qnil;
|
|
|
3326 tembuf = Fcurrent_buffer ();
|
|
|
3327 Fset_buffer (buf);
|
|
|
3328 Fkill_buffer (tembuf);
|
|
|
3329 return Qnil;
|
|
|
3330 }
|
|
|
3331
|
|
70
|
3332 DEFUN ("write-region-internal", Fwrite_region_internal, 3, 7,
|
|
20
|
3333 "r\nFWrite region to file: ", /*
|
|
70
|
3334 Write current region into specified file; no coding-system frobbing.
|
|
|
3335 This function is identical to `write-region' except for the handling
|
|
|
3336 of the CODESYS argument under XEmacs/Mule. (When Mule support is not
|
|
|
3337 present, both functions are identical and ignore the CODESYS argument.)
|
|
|
3338 If support for Mule exists in this Emacs, the file is encoded according
|
|
|
3339 to the value of CODESYS. If this is nil, no code conversion occurs.
|
|
20
|
3340 */
|
|
70
|
3341 (start, end, filename, append, visit, lockname, codesys))
|
|
0
|
3342 {
|
|
70
|
3343 /* This function can GC */
|
|
0
|
3344 int desc;
|
|
|
3345 int failure;
|
|
|
3346 int save_errno = 0;
|
|
|
3347 struct stat st;
|
|
|
3348 Lisp_Object fn;
|
|
|
3349 int speccount = specpdl_depth ();
|
|
|
3350 #ifdef VMS
|
|
|
3351 unsigned char *fname = 0; /* If non-0, original filename (must rename) */
|
|
|
3352 #endif /* VMS */
|
|
|
3353 int visiting_other = STRINGP (visit);
|
|
|
3354 int visiting = (EQ (visit, Qt) || visiting_other);
|
|
|
3355 int quietly = (!visiting && !NILP (visit));
|
|
|
3356 Lisp_Object visit_file = Qnil;
|
|
|
3357 Lisp_Object annotations = Qnil;
|
|
|
3358 struct buffer *given_buffer;
|
|
|
3359 Bufpos start1, end1;
|
|
|
3360
|
|
|
3361 #ifdef DOS_NT
|
|
|
3362 int buffer_file_type
|
|
|
3363 = NILP (current_buffer->buffer_file_type) ? O_TEXT : O_BINARY;
|
|
|
3364 #endif /* DOS_NT */
|
|
|
3365
|
|
70
|
3366 #ifdef MULE
|
|
|
3367 codesys = Fget_coding_system (codesys);
|
|
|
3368 #endif /* MULE */
|
|
|
3369
|
|
0
|
3370 if (current_buffer->base_buffer && ! NILP (visit))
|
|
|
3371 error ("Cannot do file visiting in an indirect buffer");
|
|
|
3372
|
|
|
3373 if (!NILP (start) && !STRINGP (start))
|
|
|
3374 get_buffer_range_char (current_buffer, start, end, &start1, &end1, 0);
|
|
|
3375
|
|
|
3376 {
|
|
|
3377 Lisp_Object handler;
|
|
|
3378 struct gcpro gcpro1, gcpro2, gcpro3, gcpro4, gcpro5;
|
|
|
3379 GCPRO5 (start, filename, visit, visit_file, lockname);
|
|
|
3380
|
|
|
3381 if (visiting_other)
|
|
|
3382 visit_file = Fexpand_file_name (visit, Qnil);
|
|
|
3383 else
|
|
|
3384 visit_file = filename;
|
|
|
3385 filename = Fexpand_file_name (filename, Qnil);
|
|
|
3386
|
|
|
3387 UNGCPRO;
|
|
|
3388
|
|
|
3389 if (NILP (lockname))
|
|
|
3390 lockname = visit_file;
|
|
|
3391
|
|
|
3392 /* If the file name has special constructs in it,
|
|
|
3393 call the corresponding file handler. */
|
|
|
3394 handler = Ffind_file_name_handler (filename, Qwrite_region);
|
|
|
3395 /* If FILENAME has no handler, see if VISIT has one. */
|
|
|
3396 if (NILP (handler) && STRINGP (visit))
|
|
|
3397 handler = Ffind_file_name_handler (visit, Qwrite_region);
|
|
|
3398
|
|
|
3399 if (!NILP (handler))
|
|
|
3400 {
|
|
86
|
3401 Lisp_Object val = call8 (handler, Qwrite_region, start, end,
|
|
|
3402 filename, append, visit, lockname, codesys);
|
|
0
|
3403 if (visiting)
|
|
|
3404 {
|
|
|
3405 BUF_SAVE_MODIFF (current_buffer) = BUF_MODIFF (current_buffer);
|
|
|
3406 current_buffer->save_length =
|
|
|
3407 make_int (BUF_SIZE (current_buffer));
|
|
|
3408 current_buffer->filename = visit_file;
|
|
|
3409 MARK_MODELINE_CHANGED;
|
|
|
3410 }
|
|
|
3411 return val;
|
|
|
3412 }
|
|
|
3413 }
|
|
|
3414
|
|
|
3415 #ifdef CLASH_DETECTION
|
|
|
3416 if (!auto_saving)
|
|
|
3417 {
|
|
70
|
3418 struct gcpro gcpro1, gcpro2, gcpro3, gcpro4;
|
|
|
3419 GCPRO4 (start, filename, visit_file, lockname);
|
|
0
|
3420 lock_file (lockname);
|
|
|
3421 UNGCPRO;
|
|
|
3422 }
|
|
|
3423 #endif /* CLASH_DETECTION */
|
|
|
3424
|
|
|
3425 /* Special kludge to simplify auto-saving. */
|
|
|
3426 if (NILP (start))
|
|
|
3427 {
|
|
|
3428 start1 = BUF_BEG (current_buffer);
|
|
|
3429 end1 = BUF_Z (current_buffer);
|
|
|
3430 }
|
|
|
3431
|
|
|
3432 record_unwind_protect (build_annotations_unwind, Fcurrent_buffer ());
|
|
|
3433
|
|
|
3434 given_buffer = current_buffer;
|
|
|
3435 annotations = build_annotations (start, end);
|
|
|
3436 if (current_buffer != given_buffer)
|
|
|
3437 {
|
|
|
3438 start1 = BUF_BEGV (current_buffer);
|
|
|
3439 end1 = BUF_ZV (current_buffer);
|
|
|
3440 }
|
|
|
3441
|
|
|
3442 fn = filename;
|
|
|
3443 desc = -1;
|
|
|
3444 if (!NILP (append))
|
|
|
3445 #ifdef DOS_NT
|
|
16
|
3446 desc = open ((char *) XSTRING_DATA (fn),
|
|
0
|
3447 (O_WRONLY | buffer_file_type), 0);
|
|
|
3448 #else /* not DOS_NT */
|
|
16
|
3449 desc = open ((char *) XSTRING_DATA (fn), O_WRONLY, 0);
|
|
0
|
3450 #endif /* not DOS_NT */
|
|
|
3451
|
|
|
3452 if (desc < 0)
|
|
|
3453 #ifndef VMS
|
|
|
3454 {
|
|
|
3455 #ifdef DOS_NT
|
|
16
|
3456 desc = open ((char *) XSTRING_DATA (fn),
|
|
0
|
3457 (O_WRONLY | O_TRUNC | O_CREAT | buffer_file_type),
|
|
|
3458 (S_IREAD | S_IWRITE));
|
|
|
3459 #else /* not DOS_NT */
|
|
16
|
3460 desc = creat ((char *) XSTRING_DATA (fn),
|
|
0
|
3461 ((auto_saving) ? auto_save_mode_bits : 0666));
|
|
|
3462 #endif /* DOS_NT */
|
|
|
3463 }
|
|
|
3464 #else /* VMS */
|
|
|
3465 {
|
|
|
3466 if (auto_saving) /* Overwrite any previous version of autosave file */
|
|
|
3467 {
|
|
16
|
3468 char *fn_data = XSTRING_DATA (fn);
|
|
0
|
3469 /* if fn exists, truncate to zero length */
|
|
|
3470 vms_truncate (fn_data);
|
|
|
3471 desc = open (fn_data, O_RDWR, 0);
|
|
|
3472 if (desc < 0)
|
|
|
3473 desc = creat_copy_attrs ((STRINGP (current_buffer->filename)
|
|
82
|
3474 ? (char *)
|
|
|
3475 XSTRING_DATA (current_buffer->filename)
|
|
0
|
3476 : 0),
|
|
|
3477 fn_data);
|
|
|
3478 }
|
|
|
3479 else /* Write to temporary name and rename if no errors */
|
|
|
3480 {
|
|
|
3481 Lisp_Object temp_name;
|
|
|
3482
|
|
|
3483 struct gcpro gcpro1, gcpro2, gcpro3;
|
|
|
3484 GCPRO3 (start, filename, visit_file);
|
|
|
3485 {
|
|
|
3486 struct gcpro gcpro1, gcpro2, gcpro3; /* Don't have GCPRO6 */
|
|
|
3487
|
|
|
3488 GCPRO3 (fn, fname, annotations);
|
|
|
3489
|
|
|
3490 temp_name = Ffile_name_directory (filename);
|
|
|
3491
|
|
|
3492 if (NILP (temp_name))
|
|
16
|
3493 desc = creat ((char *) XSTRING_DATA (fn), 0666);
|
|
0
|
3494 else
|
|
|
3495 {
|
|
|
3496 temp_name =
|
|
|
3497 Fmake_temp_name (concat2 (temp_name,
|
|
|
3498 build_string ("$$SAVE$$")));
|
|
|
3499 fname = filename;
|
|
|
3500 fn = temp_name;
|
|
|
3501 desc = creat_copy_attrs (fname,
|
|
16
|
3502 (char *) XSTRING_DATA (fn));
|
|
0
|
3503 if (desc < 0)
|
|
|
3504 {
|
|
|
3505 char *fn_data;
|
|
|
3506 /* If we can't open the temporary file, try creating a new
|
|
|
3507 version of the original file. VMS "creat" creates a
|
|
|
3508 new version rather than truncating an existing file. */
|
|
|
3509 fn = fname;
|
|
|
3510 fname = Qnil;
|
|
16
|
3511 fn_data = XSTRING_DATA (fn);
|
|
0
|
3512 desc = creat (fn_data, 0666);
|
|
|
3513 #if 0 /* This can clobber an existing file and fail
|
|
|
3514 to replace it, if the user runs out of
|
|
|
3515 space. */
|
|
|
3516 if (desc < 0)
|
|
|
3517 {
|
|
|
3518 /* We can't make a new version;
|
|
|
3519 try to truncate and rewrite existing version if any.
|
|
|
3520 */
|
|
|
3521 vms_truncate (fn_data);
|
|
|
3522 desc = open (fn_data, O_RDWR, 0);
|
|
|
3523 }
|
|
|
3524 #endif
|
|
|
3525 }
|
|
|
3526 }
|
|
|
3527 UNGCPRO;
|
|
|
3528 }
|
|
|
3529 UNGCPRO;
|
|
|
3530 }
|
|
|
3531 }
|
|
|
3532 #endif /* VMS */
|
|
|
3533
|
|
|
3534 if (desc < 0)
|
|
|
3535 {
|
|
|
3536 #ifdef CLASH_DETECTION
|
|
|
3537 save_errno = errno;
|
|
|
3538 if (!auto_saving) unlock_file (lockname);
|
|
|
3539 errno = save_errno;
|
|
|
3540 #endif /* CLASH_DETECTION */
|
|
|
3541 report_file_error ("Opening output file",
|
|
|
3542 Fcons (filename, Qnil));
|
|
|
3543 }
|
|
|
3544
|
|
|
3545 {
|
|
|
3546 Lisp_Object desc_locative = Fcons (make_int (desc), Qnil);
|
|
|
3547 Lisp_Object instream = Qnil, outstream = Qnil;
|
|
|
3548 struct gcpro gcpro1, gcpro2;
|
|
|
3549 /* need to gcpro; QUIT could happen out of call to write() */
|
|
|
3550 GCPRO2 (instream, outstream);
|
|
|
3551
|
|
|
3552 record_unwind_protect (close_file_unwind, desc_locative);
|
|
|
3553
|
|
|
3554 if (!NILP (append))
|
|
|
3555 {
|
|
|
3556 if (lseek (desc, 0, 2) < 0)
|
|
|
3557 {
|
|
|
3558 #ifdef CLASH_DETECTION
|
|
|
3559 if (!auto_saving) unlock_file (lockname);
|
|
|
3560 #endif /* CLASH_DETECTION */
|
|
|
3561 report_file_error ("Lseek error",
|
|
|
3562 list1 (filename));
|
|
|
3563 }
|
|
|
3564 }
|
|
|
3565
|
|
|
3566 #ifdef VMS
|
|
|
3567 /*
|
|
|
3568 * Kludge Warning: The VMS C RTL likes to insert carriage returns
|
|
|
3569 * if we do writes that don't end with a carriage return. Furthermore
|
|
|
3570 * it cannot handle writes of more then 16K. The modified
|
|
|
3571 * version of "sys_write" in SYSDEP.C (see comment there) copes with
|
|
|
3572 * this EXCEPT for the last record (iff it doesn't end with a carriage
|
|
|
3573 * return). This implies that if your buffer doesn't end with a carriage
|
|
|
3574 * return, you get one free... tough. However it also means that if
|
|
|
3575 * we make two calls to sys_write (a la the following code) you can
|
|
|
3576 * get one at the gap as well. The easiest way to fix this (honest)
|
|
|
3577 * is to move the gap to the next newline (or the end of the buffer).
|
|
|
3578 * Thus this change.
|
|
|
3579 *
|
|
|
3580 * Yech!
|
|
|
3581 */
|
|
|
3582 you lose -- fix this
|
|
|
3583 if (GPT > BUF_BEG (current_buffer) && *GPT_ADDR[-1] != '\n')
|
|
|
3584 move_gap (find_next_newline (current_buffer, GPT, 1));
|
|
|
3585 #endif
|
|
|
3586
|
|
|
3587 failure = 0;
|
|
|
3588
|
|
|
3589 /* Note: I tried increasing the buffering size, along with
|
|
|
3590 various other tricks, but nothing seemed to make much of
|
|
|
3591 a difference in the time it took to save a large file.
|
|
|
3592 (Actually that's not true. With a local disk, changing
|
|
|
3593 the buffer size doesn't seem to make much difference.
|
|
|
3594 With an NFS-mounted disk, it could make a lot of difference
|
|
|
3595 because you're affecting the number of network requests
|
|
|
3596 that need to be made, and there could be a large latency
|
|
|
3597 for each request. So I've increased the buffer size
|
|
|
3598 to 64K.) */
|
|
|
3599 outstream = make_filedesc_output_stream (desc, 0, -1, 0);
|
|
|
3600 Lstream_set_buffering (XLSTREAM (outstream),
|
|
|
3601 LSTREAM_BLOCKN_BUFFERED, 65536);
|
|
70
|
3602 #ifdef MULE
|
|
|
3603 outstream =
|
|
|
3604 make_encoding_output_stream ( XLSTREAM (outstream), codesys);
|
|
|
3605 Lstream_set_buffering (XLSTREAM (outstream),
|
|
|
3606 LSTREAM_BLOCKN_BUFFERED, 65536);
|
|
|
3607 #endif
|
|
0
|
3608 if (STRINGP (start))
|
|
|
3609 {
|
|
|
3610 instream = make_lisp_string_input_stream (start, 0, -1);
|
|
|
3611 start1 = 0;
|
|
|
3612 }
|
|
|
3613 else
|
|
|
3614 instream = make_lisp_buffer_input_stream (current_buffer, start1, end1,
|
|
|
3615 LSTR_SELECTIVE |
|
|
|
3616 LSTR_IGNORE_ACCESSIBLE);
|
|
|
3617 failure = (0 > (a_write (outstream, instream, start1,
|
|
|
3618 &annotations)));
|
|
|
3619 save_errno = errno;
|
|
|
3620 /* Note that this doesn't close the desc since we created the
|
|
|
3621 stream without the LSTR_CLOSING flag, but it does
|
|
|
3622 flush out any buffered data. */
|
|
|
3623 if (Lstream_close (XLSTREAM (outstream)) < 0)
|
|
|
3624 {
|
|
|
3625 failure = 1;
|
|
|
3626 save_errno = errno;
|
|
|
3627 }
|
|
|
3628 Lstream_close (XLSTREAM (instream));
|
|
|
3629 UNGCPRO;
|
|
|
3630
|
|
|
3631 #ifdef HAVE_FSYNC
|
|
|
3632 /* Note fsync appears to change the modtime on BSD4.2 (both vax and sun).
|
|
|
3633 Disk full in NFS may be reported here. */
|
|
|
3634 /* mib says that closing the file will try to write as fast as NFS can do
|
|
|
3635 it, and that means the fsync here is not crucial for autosave files. */
|
|
|
3636 if (!auto_saving && fsync (desc) < 0
|
|
|
3637 /* If fsync fails with EINTR, don't treat that as serious. */
|
|
|
3638 && errno != EINTR)
|
|
|
3639 {
|
|
|
3640 failure = 1;
|
|
|
3641 save_errno = errno;
|
|
|
3642 }
|
|
|
3643 #endif
|
|
|
3644
|
|
|
3645 /* Spurious "file has changed on disk" warnings have been
|
|
|
3646 observed on Suns as well.
|
|
|
3647 It seems that `close' can change the modtime, under nfs.
|
|
|
3648
|
|
|
3649 (This has supposedly been fixed in Sunos 4,
|
|
|
3650 but who knows about all the other machines with NFS?) */
|
|
|
3651 /* On VMS and APOLLO, must do the stat after the close
|
|
|
3652 since closing changes the modtime. */
|
|
|
3653 #if 0 /* !defined (VMS) && !defined (APOLLO) */
|
|
|
3654 fstat (desc, &st);
|
|
|
3655 #endif
|
|
|
3656
|
|
|
3657 /* NFS can report a write failure now. */
|
|
|
3658 if (close (desc) < 0)
|
|
|
3659 {
|
|
|
3660 failure = 1;
|
|
|
3661 save_errno = errno;
|
|
|
3662 }
|
|
|
3663
|
|
|
3664 /* Discard the close unwind-protect. Execute the one for
|
|
|
3665 build_annotations (switches back to the original current buffer
|
|
|
3666 as necessary). */
|
|
|
3667 XCAR (desc_locative) = Qnil;
|
|
|
3668 unbind_to (speccount, Qnil);
|
|
|
3669 }
|
|
|
3670
|
|
|
3671
|
|
|
3672 #ifdef VMS
|
|
|
3673 /* If we wrote to a temporary name and had no errors, rename to real name. */
|
|
|
3674 if (!NILP (fname))
|
|
|
3675 {
|
|
|
3676 if (!failure)
|
|
|
3677 {
|
|
16
|
3678 failure = (rename ((char *) XSTRING_DATA (fn),
|
|
|
3679 (char *) XSTRING_DATA (fname))
|
|
0
|
3680 != 0);
|
|
|
3681 save_errno = errno;
|
|
|
3682 }
|
|
|
3683 fn = fname;
|
|
|
3684 }
|
|
|
3685 #endif /* VMS */
|
|
|
3686
|
|
|
3687 #if 1 /* defined (VMS) || defined (APOLLO) */
|
|
16
|
3688 stat ((char *) XSTRING_DATA (fn), &st);
|
|
0
|
3689 #endif
|
|
|
3690
|
|
|
3691 #ifdef CLASH_DETECTION
|
|
|
3692 if (!auto_saving)
|
|
|
3693 unlock_file (lockname);
|
|
|
3694 #endif /* CLASH_DETECTION */
|
|
|
3695
|
|
|
3696 /* Do this before reporting IO error
|
|
|
3697 to avoid a "file has changed on disk" warning on
|
|
|
3698 next attempt to save. */
|
|
|
3699 if (visiting)
|
|
|
3700 current_buffer->modtime = st.st_mtime;
|
|
|
3701
|
|
|
3702 if (failure)
|
|
|
3703 error ("IO error writing %s: %s",
|
|
16
|
3704 XSTRING_DATA (fn),
|
|
0
|
3705 strerror (save_errno));
|
|
|
3706
|
|
|
3707 if (visiting)
|
|
|
3708 {
|
|
|
3709 BUF_SAVE_MODIFF (current_buffer) = BUF_MODIFF (current_buffer);
|
|
|
3710 current_buffer->save_length = make_int (BUF_SIZE (current_buffer));
|
|
|
3711 current_buffer->filename = visit_file;
|
|
|
3712 MARK_MODELINE_CHANGED;
|
|
|
3713 }
|
|
|
3714 else if (quietly)
|
|
|
3715 {
|
|
|
3716 return Qnil;
|
|
|
3717 }
|
|
|
3718
|
|
|
3719 if (!auto_saving)
|
|
|
3720 {
|
|
|
3721 if (visiting_other)
|
|
16
|
3722 message ("Wrote %s", XSTRING_DATA (visit_file));
|
|
0
|
3723 else
|
|
|
3724 {
|
|
|
3725 struct gcpro gcpro1;
|
|
|
3726 Lisp_Object fsp;
|
|
|
3727 GCPRO1 (fn);
|
|
|
3728
|
|
|
3729 fsp = Ffile_symlink_p (fn);
|
|
|
3730 if (NILP (fsp))
|
|
16
|
3731 message ("Wrote %s", XSTRING_DATA (fn));
|
|
0
|
3732 else
|
|
|
3733 message ("Wrote %s (symlink to %s)",
|
|
16
|
3734 XSTRING_DATA (fn), XSTRING_DATA (fsp));
|
|
0
|
3735 UNGCPRO;
|
|
|
3736 }
|
|
|
3737 }
|
|
|
3738 return Qnil;
|
|
|
3739 }
|
|
|
3740
|
|
|
3741 /* #### This is such a load of shit!!!! There is no way we should define
|
|
|
3742 something so stupid as a subr, just sort the fucking list more
|
|
|
3743 intelligently. */
|
|
20
|
3744 DEFUN ("car-less-than-car", Fcar_less_than_car, 2, 2, 0, /*
|
|
0
|
3745 Return t if (car A) is numerically less than (car B).
|
|
20
|
3746 */
|
|
|
3747 (a, b))
|
|
0
|
3748 {
|
|
|
3749 return Flss (Fcar (a), Fcar (b));
|
|
|
3750 }
|
|
|
3751
|
|
|
3752 /* Heh heh heh, let's define this too, just to aggravate the person who
|
|
|
3753 wrote the above comment. */
|
|
20
|
3754 DEFUN ("cdr-less-than-cdr", Fcdr_less_than_cdr, 2, 2, 0, /*
|
|
0
|
3755 Return t if (cdr A) is numerically less than (cdr B).
|
|
20
|
3756 */
|
|
|
3757 (a, b))
|
|
0
|
3758 {
|
|
|
3759 return Flss (Fcdr (a), Fcdr (b));
|
|
|
3760 }
|
|
|
3761
|
|
|
3762 /* Build the complete list of annotations appropriate for writing out
|
|
|
3763 the text between START and END, by calling all the functions in
|
|
|
3764 write-region-annotate-functions and merging the lists they return.
|
|
|
3765 If one of these functions switches to a different buffer, we assume
|
|
|
3766 that buffer contains altered text. Therefore, the caller must
|
|
|
3767 make sure to restore the current buffer in all cases,
|
|
|
3768 as save-excursion would do. */
|
|
|
3769
|
|
|
3770 static Lisp_Object
|
|
|
3771 build_annotations (Lisp_Object start, Lisp_Object end)
|
|
|
3772 {
|
|
|
3773 /* This function can GC */
|
|
|
3774 Lisp_Object annotations;
|
|
|
3775 Lisp_Object p, res;
|
|
|
3776 struct gcpro gcpro1, gcpro2;
|
|
|
3777
|
|
|
3778 annotations = Qnil;
|
|
|
3779 p = Vwrite_region_annotate_functions;
|
|
|
3780 GCPRO2 (annotations, p);
|
|
|
3781 while (!NILP (p))
|
|
|
3782 {
|
|
|
3783 struct buffer *given_buffer = current_buffer;
|
|
|
3784 Vwrite_region_annotations_so_far = annotations;
|
|
|
3785 res = call2 (Fcar (p), start, end);
|
|
|
3786 /* If the function makes a different buffer current,
|
|
|
3787 assume that means this buffer contains altered text to be output.
|
|
|
3788 Reset START and END from the buffer bounds
|
|
|
3789 and discard all previous annotations because they should have
|
|
|
3790 been dealt with by this function. */
|
|
|
3791 if (current_buffer != given_buffer)
|
|
|
3792 {
|
|
|
3793 start = make_int (BUF_BEGV (current_buffer));
|
|
|
3794 end = make_int (BUF_ZV (current_buffer));
|
|
|
3795 annotations = Qnil;
|
|
|
3796 }
|
|
|
3797 (void) Flength (res); /* Check basic validity of return value */
|
|
|
3798 annotations = merge (annotations, res, Qcar_less_than_car);
|
|
|
3799 p = Fcdr (p);
|
|
|
3800 }
|
|
|
3801
|
|
|
3802 /* Now do the same for annotation functions implied by the file-format */
|
|
|
3803 if (auto_saving && (!EQ (Vauto_save_file_format, Qt)))
|
|
|
3804 p = Vauto_save_file_format;
|
|
|
3805 else
|
|
|
3806 p = current_buffer->file_format;
|
|
|
3807 while (!NILP (p))
|
|
|
3808 {
|
|
|
3809 struct buffer *given_buffer = current_buffer;
|
|
|
3810 Vwrite_region_annotations_so_far = annotations;
|
|
|
3811 res = call3 (Qformat_annotate_function, Fcar (p), start, end);
|
|
|
3812 if (current_buffer != given_buffer)
|
|
|
3813 {
|
|
|
3814 start = make_int (BUF_BEGV (current_buffer));
|
|
|
3815 end = make_int (BUF_ZV (current_buffer));
|
|
|
3816 annotations = Qnil;
|
|
|
3817 }
|
|
|
3818 (void) Flength (res);
|
|
|
3819 annotations = merge (annotations, res, Qcar_less_than_car);
|
|
|
3820 p = Fcdr (p);
|
|
|
3821 }
|
|
|
3822 UNGCPRO;
|
|
|
3823 return annotations;
|
|
|
3824 }
|
|
|
3825
|
|
|
3826 /* Write to stream OUTSTREAM the characters from INSTREAM (it is read until
|
|
|
3827 EOF is encountered), assuming they start at position POS in the buffer
|
|
|
3828 of string that STREAM refers to. Intersperse with them the annotations
|
|
|
3829 from *ANNOT that fall into the range of positions we are reading from,
|
|
|
3830 each at its appropriate position.
|
|
|
3831
|
|
|
3832 Modify *ANNOT by discarding elements as we output them.
|
|
|
3833 The return value is negative in case of system call failure. */
|
|
|
3834
|
|
|
3835 /* 4K should probably be fine. We just need to reduce the number of
|
|
|
3836 function calls to reasonable level. The Lstream stuff itself will
|
|
|
3837 batch to 64K to reduce the number of system calls. */
|
|
|
3838
|
|
|
3839 #define A_WRITE_BATCH_SIZE 4096
|
|
|
3840
|
|
|
3841 static int
|
|
|
3842 a_write (Lisp_Object outstream, Lisp_Object instream, int pos,
|
|
|
3843 Lisp_Object *annot)
|
|
|
3844 {
|
|
|
3845 Lisp_Object tem;
|
|
|
3846 int nextpos;
|
|
|
3847 unsigned char largebuf[A_WRITE_BATCH_SIZE];
|
|
|
3848 Lstream *instr = XLSTREAM (instream);
|
|
|
3849 Lstream *outstr = XLSTREAM (outstream);
|
|
|
3850
|
|
|
3851 while (NILP (*annot) || CONSP (*annot))
|
|
|
3852 {
|
|
|
3853 tem = Fcar_safe (Fcar (*annot));
|
|
|
3854 if (INTP (tem))
|
|
|
3855 nextpos = XINT (tem);
|
|
|
3856 else
|
|
|
3857 nextpos = INT_MAX;
|
|
70
|
3858 #ifdef MULE
|
|
|
3859 /* If there are annotations left and we have Mule, then we
|
|
|
3860 have to do the I/O one emchar at a time so we can
|
|
|
3861 determine when to insert the annotation. */
|
|
|
3862 if (!NILP (*annot))
|
|
|
3863 {
|
|
|
3864 Emchar ch;
|
|
|
3865 while (pos != nextpos && (ch = Lstream_get_emchar (instr)) != EOF)
|
|
|
3866 {
|
|
|
3867 if (Lstream_put_emchar (outstr, ch) < 0)
|
|
|
3868 return -1;
|
|
|
3869 pos++;
|
|
|
3870 }
|
|
|
3871 }
|
|
|
3872 else
|
|
|
3873 #endif
|
|
0
|
3874 {
|
|
|
3875 while (pos != nextpos)
|
|
|
3876 {
|
|
|
3877 /* Otherwise there is no point to that. Just go in batches. */
|
|
|
3878 int chunk = min (nextpos - pos, A_WRITE_BATCH_SIZE);
|
|
|
3879
|
|
|
3880 chunk = Lstream_read (instr, largebuf, chunk);
|
|
|
3881 if (chunk < 0)
|
|
|
3882 return -1;
|
|
|
3883 if (chunk == 0) /* EOF */
|
|
|
3884 break;
|
|
|
3885 if (Lstream_write (outstr, largebuf, chunk) < chunk)
|
|
|
3886 return -1;
|
|
|
3887 pos += chunk;
|
|
|
3888 }
|
|
|
3889 }
|
|
|
3890 if (pos == nextpos)
|
|
|
3891 {
|
|
|
3892 tem = Fcdr (Fcar (*annot));
|
|
|
3893 if (STRINGP (tem))
|
|
|
3894 {
|
|
16
|
3895 if (Lstream_write (outstr, XSTRING_DATA (tem),
|
|
|
3896 XSTRING_LENGTH (tem)) < 0)
|
|
0
|
3897 return -1;
|
|
|
3898 }
|
|
|
3899 *annot = Fcdr (*annot);
|
|
|
3900 }
|
|
|
3901 else
|
|
|
3902 return 0;
|
|
|
3903 }
|
|
|
3904 return -1;
|
|
|
3905 }
|
|
|
3906
|
|
|
3907
|
|
|
3908
|
|
|
3909 #if 0
|
|
|
3910 #include <des_crypt.h>
|
|
|
3911
|
|
|
3912 #define CRYPT_BLOCK_SIZE 8 /* bytes */
|
|
|
3913 #define CRYPT_KEY_SIZE 8 /* bytes */
|
|
|
3914
|
|
20
|
3915 DEFUN ("encrypt-string", Fencrypt_string, 2, 2, 0, /*
|
|
0
|
3916 Encrypt STRING using KEY.
|
|
20
|
3917 */
|
|
|
3918 (string, key))
|
|
0
|
3919 {
|
|
|
3920 char *encrypted_string, *raw_key;
|
|
|
3921 int rounded_size, extra, key_size;
|
|
|
3922
|
|
|
3923 /* !!#### May produce bogus data under Mule. */
|
|
|
3924 CHECK_STRING (string);
|
|
|
3925 CHECK_STRING (key);
|
|
|
3926
|
|
16
|
3927 extra = XSTRING_LENGTH (string) % CRYPT_BLOCK_SIZE;
|
|
|
3928 rounded_size = XSTRING_LENGTH (string) + extra;
|
|
0
|
3929 encrypted_string = alloca (rounded_size + 1);
|
|
16
|
3930 memcpy (encrypted_string, XSTRING_DATA (string), XSTRING_LENGTH (string));
|
|
0
|
3931 memset (encrypted_string + rounded_size - extra, 0, extra + 1);
|
|
|
3932
|
|
16
|
3933 if (XSTRING_LENGTH (key) > CRYPT_KEY_SIZE)
|
|
0
|
3934 key_size = CRYPT_KEY_SIZE;
|
|
|
3935 else
|
|
16
|
3936 key_size = XSTRING_LENGTH (key);
|
|
0
|
3937
|
|
|
3938 raw_key = alloca (CRYPT_KEY_SIZE + 1);
|
|
16
|
3939 memcpy (raw_key, XSTRING_DATA (key), key_size);
|
|
0
|
3940 memset (raw_key + key_size, 0, (CRYPT_KEY_SIZE + 1) - key_size);
|
|
|
3941
|
|
|
3942 (void) ecb_crypt (raw_key, encrypted_string, rounded_size,
|
|
|
3943 DES_ENCRYPT | DES_SW);
|
|
|
3944 return make_string (encrypted_string, rounded_size);
|
|
|
3945 }
|
|
|
3946
|
|
20
|
3947 DEFUN ("decrypt-string", Fdecrypt_string, 2, 2, 0, /*
|
|
0
|
3948 Decrypt STRING using KEY.
|
|
20
|
3949 */
|
|
|
3950 (string, key))
|
|
0
|
3951 {
|
|
|
3952 char *decrypted_string, *raw_key;
|
|
|
3953 int string_size, key_size;
|
|
|
3954
|
|
|
3955 CHECK_STRING (string);
|
|
|
3956 CHECK_STRING (key);
|
|
|
3957
|
|
16
|
3958 string_size = XSTRING_LENGTH (string) + 1;
|
|
0
|
3959 decrypted_string = alloca (string_size);
|
|
16
|
3960 memcpy (decrypted_string, XSTRING_DATA (string), string_size);
|
|
0
|
3961 decrypted_string[string_size - 1] = '\0';
|
|
|
3962
|
|
16
|
3963 if (XSTRING_LENGTH (key) > CRYPT_KEY_SIZE)
|
|
0
|
3964 key_size = CRYPT_KEY_SIZE;
|
|
|
3965 else
|
|
16
|
3966 key_size = XSTRING_LENGTH (key);
|
|
0
|
3967
|
|
|
3968 raw_key = alloca (CRYPT_KEY_SIZE + 1);
|
|
16
|
3969 memcpy (raw_key, XSTRING_DATA (key), key_size);
|
|
0
|
3970 memset (raw_key + key_size, 0, (CRYPT_KEY_SIZE + 1) - key_size);
|
|
|
3971
|
|
|
3972
|
|
|
3973 (void) ecb_crypt (raw_key, decrypted_string, string_size,
|
|
|
3974 DES_DECRYPT | DES_SW);
|
|
|
3975 return make_string (decrypted_string, string_size - 1);
|
|
|
3976 }
|
|
|
3977 #endif
|
|
|
3978
|
|
|
3979
|
|
20
|
3980 DEFUN ("verify-visited-file-modtime", Fverify_visited_file_modtime, 1, 1, 0, /*
|
|
0
|
3981 Return t if last mod time of BUF's visited file matches what BUF records.
|
|
|
3982 This means that the file has not been changed since it was visited or saved.
|
|
20
|
3983 */
|
|
|
3984 (buf))
|
|
0
|
3985 {
|
|
70
|
3986 /* This function can GC */
|
|
0
|
3987 struct buffer *b;
|
|
|
3988 struct stat st;
|
|
|
3989 Lisp_Object handler;
|
|
|
3990
|
|
|
3991 CHECK_BUFFER (buf);
|
|
|
3992 b = XBUFFER (buf);
|
|
|
3993
|
|
|
3994 if (!STRINGP (b->filename)) return Qt;
|
|
|
3995 if (b->modtime == 0) return Qt;
|
|
|
3996
|
|
|
3997 /* If the file name has special constructs in it,
|
|
|
3998 call the corresponding file handler. */
|
|
|
3999 handler = Ffind_file_name_handler (b->filename,
|
|
|
4000 Qverify_visited_file_modtime);
|
|
|
4001 if (!NILP (handler))
|
|
|
4002 return call2 (handler, Qverify_visited_file_modtime, buf);
|
|
|
4003
|
|
16
|
4004 if (stat ((char *) XSTRING_DATA (b->filename), &st) < 0)
|
|
0
|
4005 {
|
|
|
4006 /* If the file doesn't exist now and didn't exist before,
|
|
|
4007 we say that it isn't modified, provided the error is a tame one. */
|
|
|
4008 if (errno == ENOENT || errno == EACCES || errno == ENOTDIR)
|
|
|
4009 st.st_mtime = -1;
|
|
|
4010 else
|
|
|
4011 st.st_mtime = 0;
|
|
|
4012 }
|
|
|
4013 if (st.st_mtime == b->modtime
|
|
|
4014 /* If both are positive, accept them if they are off by one second. */
|
|
|
4015 || (st.st_mtime > 0 && b->modtime > 0
|
|
|
4016 && (st.st_mtime == b->modtime + 1
|
|
|
4017 || st.st_mtime == b->modtime - 1)))
|
|
|
4018 return Qt;
|
|
|
4019 return Qnil;
|
|
|
4020 }
|
|
|
4021
|
|
20
|
4022 DEFUN ("clear-visited-file-modtime", Fclear_visited_file_modtime, 0, 0, 0, /*
|
|
0
|
4023 Clear out records of last mod time of visited file.
|
|
|
4024 Next attempt to save will certainly not complain of a discrepancy.
|
|
20
|
4025 */
|
|
|
4026 ())
|
|
0
|
4027 {
|
|
|
4028 current_buffer->modtime = 0;
|
|
|
4029 return Qnil;
|
|
|
4030 }
|
|
|
4031
|
|
20
|
4032 DEFUN ("visited-file-modtime", Fvisited_file_modtime, 0, 0, 0, /*
|
|
0
|
4033 Return the current buffer's recorded visited file modification time.
|
|
|
4034 The value is a list of the form (HIGH . LOW), like the time values
|
|
|
4035 that `file-attributes' returns.
|
|
20
|
4036 */
|
|
|
4037 ())
|
|
0
|
4038 {
|
|
|
4039 return time_to_lisp ((time_t) current_buffer->modtime);
|
|
|
4040 }
|
|
|
4041
|
|
20
|
4042 DEFUN ("set-visited-file-modtime", Fset_visited_file_modtime, 0, 1, 0, /*
|
|
0
|
4043 Update buffer's recorded modification time from the visited file's time.
|
|
|
4044 Useful if the buffer was not read from the file normally
|
|
|
4045 or if the file itself has been changed for some known benign reason.
|
|
|
4046 An argument specifies the modification time value to use
|
|
|
4047 (instead of that of the visited file), in the form of a list
|
|
|
4048 (HIGH . LOW) or (HIGH LOW).
|
|
20
|
4049 */
|
|
|
4050 (time_list))
|
|
0
|
4051 {
|
|
70
|
4052 /* This function can GC */
|
|
0
|
4053 if (!NILP (time_list))
|
|
|
4054 {
|
|
|
4055 time_t the_time;
|
|
|
4056 lisp_to_time (time_list, &the_time);
|
|
|
4057 current_buffer->modtime = (int) the_time;
|
|
|
4058 }
|
|
|
4059 else
|
|
|
4060 {
|
|
|
4061 Lisp_Object filename;
|
|
|
4062 struct stat st;
|
|
|
4063 Lisp_Object handler;
|
|
70
|
4064 struct gcpro gcpro1, gcpro2;
|
|
0
|
4065
|
|
70
|
4066 GCPRO2 (filename, time_list);
|
|
|
4067 filename = Fexpand_file_name (current_buffer->filename,
|
|
|
4068 Qnil);
|
|
0
|
4069
|
|
|
4070 /* If the file name has special constructs in it,
|
|
|
4071 call the corresponding file handler. */
|
|
|
4072 handler = Ffind_file_name_handler (filename, Qset_visited_file_modtime);
|
|
|
4073 UNGCPRO;
|
|
|
4074 if (!NILP (handler))
|
|
|
4075 /* The handler can find the file name the same way we did. */
|
|
|
4076 return call2 (handler, Qset_visited_file_modtime, Qnil);
|
|
16
|
4077 else if (stat ((char *) XSTRING_DATA (filename), &st) >= 0)
|
|
0
|
4078 current_buffer->modtime = st.st_mtime;
|
|
|
4079 }
|
|
|
4080
|
|
|
4081 return Qnil;
|
|
|
4082 }
|
|
|
4083
|
|
20
|
4084 DEFUN ("set-buffer-modtime", Fset_buffer_modtime, 1, 2, 0, /*
|
|
0
|
4085 Update BUFFER's recorded modification time from the associated
|
|
|
4086 file's modtime, if there is an associated file. If not, use the
|
|
|
4087 current time. In either case, if the optional arg TIME is supplied,
|
|
|
4088 it will be used if it is either an integer or a cons of two integers.
|
|
20
|
4089 */
|
|
|
4090 (buf, in_time))
|
|
0
|
4091 {
|
|
70
|
4092 /* This function can GC */
|
|
0
|
4093 unsigned long time_to_use = 0;
|
|
|
4094 int set_time_to_use = 0;
|
|
|
4095 struct stat st;
|
|
|
4096
|
|
|
4097 CHECK_BUFFER (buf);
|
|
|
4098
|
|
|
4099 if (!NILP (in_time))
|
|
|
4100 {
|
|
|
4101 if (INTP (in_time))
|
|
|
4102 {
|
|
|
4103 time_to_use = XINT (in_time);
|
|
|
4104 set_time_to_use = 1;
|
|
|
4105 }
|
|
|
4106 else if ((CONSP (in_time)) &&
|
|
|
4107 (INTP (Fcar (in_time))) &&
|
|
|
4108 (INTP (Fcdr (in_time))))
|
|
|
4109 {
|
|
|
4110 time_t the_time;
|
|
|
4111 lisp_to_time (in_time, &the_time);
|
|
|
4112 time_to_use = (unsigned long) the_time;
|
|
|
4113 set_time_to_use = 1;
|
|
|
4114 }
|
|
|
4115 }
|
|
|
4116
|
|
|
4117 if (!set_time_to_use)
|
|
|
4118 {
|
|
|
4119 Lisp_Object filename = Qnil;
|
|
70
|
4120 struct gcpro gcpro1, gcpro2;
|
|
|
4121 GCPRO2 (buf, filename);
|
|
0
|
4122
|
|
|
4123 if (STRINGP (XBUFFER (buf)->filename))
|
|
70
|
4124 filename = Fexpand_file_name (XBUFFER (buf)->filename,
|
|
|
4125 Qnil);
|
|
0
|
4126 else
|
|
|
4127 filename = Qnil;
|
|
70
|
4128
|
|
|
4129 UNGCPRO;
|
|
0
|
4130
|
|
|
4131 if (!NILP (filename) && !NILP (Ffile_exists_p (filename)))
|
|
|
4132 {
|
|
|
4133 Lisp_Object handler;
|
|
|
4134
|
|
|
4135 /* If the file name has special constructs in it,
|
|
|
4136 call the corresponding file handler. */
|
|
70
|
4137 GCPRO1 (filename);
|
|
0
|
4138 handler = Ffind_file_name_handler (filename, Qset_buffer_modtime);
|
|
|
4139 UNGCPRO;
|
|
|
4140 if (!NILP (handler))
|
|
|
4141 /* The handler can find the file name the same way we did. */
|
|
|
4142 return (call2 (handler, Qset_buffer_modtime, Qnil));
|
|
|
4143 else
|
|
|
4144 {
|
|
16
|
4145 if (stat ((char *) XSTRING_DATA (filename), &st) >= 0)
|
|
0
|
4146 time_to_use = st.st_mtime;
|
|
|
4147 else
|
|
|
4148 time_to_use = time ((time_t *) 0);
|
|
|
4149 }
|
|
|
4150 }
|
|
|
4151 else
|
|
70
|
4152 time_to_use = time ((time_t *) 0);
|
|
0
|
4153 }
|
|
|
4154
|
|
|
4155 XBUFFER (buf)->modtime = time_to_use;
|
|
70
|
4156
|
|
0
|
4157 return Qnil;
|
|
|
4158 }
|
|
|
4159
|
|
|
4160
|
|
|
4161 static Lisp_Object
|
|
|
4162 auto_save_error (Lisp_Object condition_object, Lisp_Object ignored)
|
|
|
4163 {
|
|
70
|
4164 /* This function can GC */
|
|
0
|
4165 if (gc_in_progress)
|
|
|
4166 return Qnil;
|
|
110
|
4167 /* Don't try printing an error message after everything is gone! */
|
|
|
4168 if (preparing_for_armageddon)
|
|
|
4169 return Qnil;
|
|
0
|
4170 clear_echo_area (selected_frame (), Qauto_saving, 1);
|
|
|
4171 Fding (Qt, Qauto_save_error, Qnil);
|
|
82
|
4172 message ("Auto-saving...error for %s", XSTRING_DATA (current_buffer->name));
|
|
0
|
4173 Fsleep_for (make_int (1));
|
|
82
|
4174 message ("Auto-saving...error!for %s", XSTRING_DATA (current_buffer->name));
|
|
0
|
4175 Fsleep_for (make_int (1));
|
|
82
|
4176 message ("Auto-saving...error for %s", XSTRING_DATA (current_buffer->name));
|
|
0
|
4177 Fsleep_for (make_int (1));
|
|
|
4178 return Qnil;
|
|
|
4179 }
|
|
|
4180
|
|
|
4181 static Lisp_Object
|
|
|
4182 auto_save_1 (Lisp_Object ignored)
|
|
|
4183 {
|
|
70
|
4184 /* This function can GC */
|
|
0
|
4185 struct stat st;
|
|
|
4186 Lisp_Object fn = current_buffer->filename;
|
|
|
4187 Lisp_Object a = current_buffer->auto_save_file_name;
|
|
|
4188
|
|
|
4189 if (!STRINGP (a))
|
|
|
4190 return (Qnil);
|
|
|
4191
|
|
|
4192 /* Get visited file's mode to become the auto save file's mode. */
|
|
|
4193 if (STRINGP (fn) &&
|
|
16
|
4194 stat ((char *) XSTRING_DATA (fn), &st) >= 0)
|
|
0
|
4195 /* But make sure we can overwrite it later! */
|
|
|
4196 auto_save_mode_bits = st.st_mode | 0600;
|
|
|
4197 else
|
|
|
4198 /* default mode for auto-save files of buffers with no file is
|
|
|
4199 readable by owner only. This may annoy some small number of
|
|
|
4200 people, but the alternative removes all privacy from email. */
|
|
|
4201 auto_save_mode_bits = 0600;
|
|
|
4202
|
|
|
4203 return
|
|
70
|
4204 /* !!#### need to deal with this 'escape-quoted everywhere */
|
|
|
4205 Fwrite_region_internal (Qnil, Qnil, a, Qnil, Qlambda, Qnil,
|
|
|
4206 #ifdef MULE
|
|
|
4207 Qescape_quoted
|
|
|
4208 #else
|
|
|
4209 Qnil
|
|
|
4210 #endif
|
|
|
4211 );
|
|
44
|
4212 }
|
|
|
4213
|
|
0
|
4214
|
|
|
4215 static Lisp_Object
|
|
|
4216 do_auto_save_unwind (Lisp_Object fd)
|
|
|
4217 {
|
|
|
4218 close (XINT (fd));
|
|
|
4219 return (fd);
|
|
|
4220 }
|
|
|
4221
|
|
|
4222 static Lisp_Object
|
|
|
4223 do_auto_save_unwind_2 (Lisp_Object old_auto_saving)
|
|
|
4224 {
|
|
|
4225 auto_saving = XINT (old_auto_saving);
|
|
|
4226 return Qnil;
|
|
|
4227 }
|
|
|
4228
|
|
|
4229 /* Fdo_auto_save() checks whether a GC is in progress when it is called,
|
|
|
4230 and if so, tries to avoid touching lisp objects.
|
|
|
4231
|
|
|
4232 The only time that Fdo_auto_save() is called while GC is in progress
|
|
|
4233 is if we're going down, as a result of an abort() or a kill signal.
|
|
|
4234 It's fairly important that we generate autosave files in that case!
|
|
|
4235 */
|
|
|
4236
|
|
20
|
4237 DEFUN ("do-auto-save", Fdo_auto_save, 0, 2, "", /*
|
|
0
|
4238 Auto-save all buffers that need it.
|
|
|
4239 This is all buffers that have auto-saving enabled
|
|
|
4240 and are changed since last auto-saved.
|
|
|
4241 Auto-saving writes the buffer into a file
|
|
|
4242 so that your editing is not lost if the system crashes.
|
|
|
4243 This file is not the file you visited; that changes only when you save.
|
|
|
4244 Normally we run the normal hook `auto-save-hook' before saving.
|
|
|
4245
|
|
|
4246 Non-nil first argument means do not print any message if successful.
|
|
|
4247 Non-nil second argument means save only current buffer.
|
|
20
|
4248 */
|
|
|
4249 (no_message, current_only))
|
|
0
|
4250 {
|
|
70
|
4251 /* This function can GC */
|
|
110
|
4252 struct buffer *b;
|
|
0
|
4253 Lisp_Object tail, buf;
|
|
|
4254 int auto_saved = 0;
|
|
|
4255 int do_handled_files;
|
|
|
4256 Lisp_Object oquit = Qnil;
|
|
|
4257 Lisp_Object listfile = Qnil;
|
|
110
|
4258 Lisp_Object old;
|
|
0
|
4259 int listdesc = -1;
|
|
|
4260 int speccount = specpdl_depth ();
|
|
110
|
4261 struct gcpro gcpro1, gcpro2, gcpro3;
|
|
|
4262
|
|
|
4263 XSETBUFFER (old, current_buffer);
|
|
|
4264 GCPRO3 (oquit, listfile, old);
|
|
0
|
4265 check_quit (); /* make Vquit_flag accurate */
|
|
|
4266 /* Ordinarily don't quit within this function,
|
|
|
4267 but don't make it impossible to quit (in case we get hung in I/O). */
|
|
|
4268 oquit = Vquit_flag;
|
|
|
4269 Vquit_flag = Qnil;
|
|
|
4270
|
|
|
4271 /* No further GCPRO needed, because (when it matters) all Lisp_Object
|
|
|
4272 variables point to non-strings reached from Vbuffer_alist. */
|
|
|
4273
|
|
|
4274 if (minibuf_level != 0 || preparing_for_armageddon)
|
|
|
4275 no_message = Qt;
|
|
|
4276
|
|
|
4277 run_hook (Qauto_save_hook);
|
|
|
4278
|
|
|
4279 if (GC_STRINGP (Vauto_save_list_file_name))
|
|
70
|
4280 listfile = Fexpand_file_name (Vauto_save_list_file_name, Qnil);
|
|
0
|
4281
|
|
|
4282 /* Make sure auto_saving is reset. */
|
|
|
4283 record_unwind_protect (do_auto_save_unwind_2, make_int (auto_saving));
|
|
|
4284
|
|
|
4285 auto_saving = 1;
|
|
|
4286
|
|
|
4287 /* First, save all files which don't have handlers. If Emacs is
|
|
|
4288 crashing, the handlers may tweak what is causing Emacs to crash
|
|
|
4289 in the first place, and it would be a shame if Emacs failed to
|
|
|
4290 autosave perfectly ordinary files because it couldn't handle some
|
|
|
4291 ange-ftp'd file. */
|
|
|
4292 for (do_handled_files = 0; do_handled_files < 2; do_handled_files++)
|
|
|
4293 {
|
|
|
4294 for (tail = Vbuffer_alist;
|
|
|
4295 GC_CONSP (tail);
|
|
|
4296 tail = XCDR (tail))
|
|
|
4297 {
|
|
|
4298 buf = XCDR (XCAR (tail));
|
|
|
4299 b = XBUFFER (buf);
|
|
|
4300
|
|
|
4301 if (!GC_NILP (current_only)
|
|
|
4302 && b != current_buffer)
|
|
|
4303 continue;
|
|
|
4304
|
|
|
4305 /* Don't auto-save indirect buffers.
|
|
|
4306 The base buffer takes care of it. */
|
|
|
4307 if (b->base_buffer)
|
|
|
4308 continue;
|
|
|
4309
|
|
|
4310 /* Check for auto save enabled
|
|
|
4311 and file changed since last auto save
|
|
|
4312 and file changed since last real save. */
|
|
|
4313 if (GC_STRINGP (b->auto_save_file_name)
|
|
|
4314 && BUF_SAVE_MODIFF (b) < BUF_MODIFF (b)
|
|
|
4315 && b->auto_save_modified < BUF_MODIFF (b)
|
|
|
4316 /* -1 means we've turned off autosaving for a while--see below. */
|
|
|
4317 && XINT (b->save_length) >= 0
|
|
|
4318 && (do_handled_files
|
|
|
4319 || NILP (Ffind_file_name_handler (b->auto_save_file_name,
|
|
|
4320 Qwrite_region))))
|
|
|
4321 {
|
|
|
4322 EMACS_TIME before_time, after_time;
|
|
|
4323
|
|
|
4324 EMACS_GET_TIME (before_time);
|
|
|
4325 /* If we had a failure, don't try again for 20 minutes. */
|
|
|
4326 if (!preparing_for_armageddon
|
|
|
4327 && b->auto_save_failure_time >= 0
|
|
|
4328 && (EMACS_SECS (before_time) - b->auto_save_failure_time <
|
|
|
4329 1200))
|
|
|
4330 continue;
|
|
|
4331
|
|
|
4332 if (!preparing_for_armageddon &&
|
|
|
4333 (XINT (b->save_length) * 10
|
|
|
4334 > (BUF_Z (b) - BUF_BEG (b)) * 13)
|
|
|
4335 /* A short file is likely to change a large fraction;
|
|
|
4336 spare the user annoying messages. */
|
|
|
4337 && XINT (b->save_length) > 5000
|
|
|
4338 /* These messages are frequent and annoying for `*mail*'. */
|
|
|
4339 && !EQ (b->filename, Qnil)
|
|
|
4340 && NILP (no_message)
|
|
|
4341 && disable_auto_save_when_buffer_shrinks)
|
|
|
4342 {
|
|
|
4343 /* It has shrunk too much; turn off auto-saving here.
|
|
|
4344 Unless we're about to crash, in which case auto-save it
|
|
|
4345 anyway.
|
|
|
4346 */
|
|
|
4347 message
|
|
|
4348 ("Buffer %s has shrunk a lot; auto save turned off there",
|
|
16
|
4349 XSTRING_DATA (b->name));
|
|
0
|
4350 /* Turn off auto-saving until there's a real save,
|
|
|
4351 and prevent any more warnings. */
|
|
|
4352 b->save_length = make_int (-1);
|
|
|
4353 if (!gc_in_progress)
|
|
|
4354 Fsleep_for (make_int (1));
|
|
|
4355 continue;
|
|
|
4356 }
|
|
|
4357 set_buffer_internal (b);
|
|
|
4358 if (!auto_saved && GC_NILP (no_message))
|
|
|
4359 {
|
|
|
4360 static CONST unsigned char *msg
|
|
|
4361 = (CONST unsigned char *) "Auto-saving...";
|
|
|
4362 echo_area_message (selected_frame (), msg, Qnil,
|
|
|
4363 0, strlen ((CONST char *) msg),
|
|
|
4364 Qauto_saving);
|
|
|
4365 }
|
|
|
4366
|
|
|
4367 /* Open the auto-save list file, if necessary.
|
|
|
4368 We only do this now so that the file only exists
|
|
|
4369 if we actually auto-saved any files. */
|
|
|
4370 if (!auto_saved && GC_STRINGP (listfile) && listdesc < 0)
|
|
|
4371 {
|
|
|
4372 #ifdef DOS_NT
|
|
70
|
4373 listdesc = open ((char *) XSTRING_DATA (listfile),
|
|
0
|
4374 O_WRONLY | O_TRUNC | O_CREAT | O_TEXT,
|
|
|
4375 S_IREAD | S_IWRITE);
|
|
|
4376 #else /* not DOS_NT */
|
|
16
|
4377 listdesc = creat ((char *) XSTRING_DATA (listfile), 0666);
|
|
0
|
4378 #endif /* not DOS_NT */
|
|
|
4379
|
|
|
4380 /* Arrange to close that file whether or not we get
|
|
|
4381 an error. */
|
|
|
4382 if (listdesc >= 0)
|
|
|
4383 record_unwind_protect (do_auto_save_unwind,
|
|
|
4384 make_int (listdesc));
|
|
|
4385 }
|
|
|
4386
|
|
|
4387 /* Record all the buffers that we are auto-saving in
|
|
|
4388 the special file that lists them. For each of
|
|
|
4389 these buffers, record visited name (if any) and
|
|
|
4390 auto save name. */
|
|
|
4391 if (listdesc >= 0)
|
|
|
4392 {
|
|
|
4393 Extbyte *auto_save_file_name_ext;
|
|
|
4394 Extcount auto_save_file_name_ext_len;
|
|
|
4395
|
|
|
4396 GET_STRING_FILENAME_DATA_ALLOCA
|
|
|
4397 (b->auto_save_file_name,
|
|
|
4398 auto_save_file_name_ext,
|
|
|
4399 auto_save_file_name_ext_len);
|
|
|
4400 if (!NILP (b->filename))
|
|
|
4401 {
|
|
|
4402 Extbyte *filename_ext;
|
|
|
4403 Extcount filename_ext_len;
|
|
|
4404
|
|
|
4405 GET_STRING_FILENAME_DATA_ALLOCA (b->filename,
|
|
|
4406 filename_ext,
|
|
|
4407 filename_ext_len);
|
|
|
4408 write (listdesc, filename_ext, filename_ext_len);
|
|
|
4409 }
|
|
|
4410 write (listdesc, "\n", 1);
|
|
|
4411 write (listdesc, auto_save_file_name_ext,
|
|
|
4412 auto_save_file_name_ext_len);
|
|
|
4413 write (listdesc, "\n", 1);
|
|
|
4414 }
|
|
|
4415
|
|
110
|
4416 /* dmoore - In a bad scenario we've set b=XBUFFER(buf)
|
|
|
4417 based on values in Vbuffer_alist. auto_save_1 may
|
|
|
4418 cause lisp handlers to run. Those handlers may kill
|
|
|
4419 the buffer and then GC. Since the buffer is killed,
|
|
|
4420 it's no longer in Vbuffer_alist so it might get reaped
|
|
|
4421 by the GC. We also need to protect tail. */
|
|
|
4422 /* #### There is probably a lot of other code which has
|
|
|
4423 pointers into buffers which may get blown away by
|
|
|
4424 handlers. */
|
|
|
4425 {
|
|
|
4426 struct gcpro gcpro1, gcpro2;
|
|
|
4427 GCPRO2 (buf, tail);
|
|
|
4428 condition_case_1 (Qt,
|
|
|
4429 auto_save_1, Qnil,
|
|
|
4430 auto_save_error, Qnil);
|
|
|
4431 UNGCPRO;
|
|
|
4432 }
|
|
|
4433 /* Handler killed our saved current-buffer! Pick any. */
|
|
|
4434 if (!BUFFER_LIVE_P (XBUFFER (old)))
|
|
|
4435 XSETBUFFER (old, current_buffer);
|
|
|
4436
|
|
|
4437 set_buffer_internal (XBUFFER (old));
|
|
0
|
4438 auto_saved++;
|
|
110
|
4439
|
|
|
4440 /* Handler killed their own buffer! */
|
|
|
4441 if (!BUFFER_LIVE_P(b))
|
|
|
4442 continue;
|
|
|
4443
|
|
0
|
4444 b->auto_save_modified = BUF_MODIFF (b);
|
|
|
4445 b->save_length = make_int (BUF_SIZE (b));
|
|
|
4446 EMACS_GET_TIME (after_time);
|
|
|
4447 /* If auto-save took more than 60 seconds,
|
|
|
4448 assume it was an NFS failure that got a timeout. */
|
|
|
4449 if (EMACS_SECS (after_time) - EMACS_SECS (before_time) > 60)
|
|
|
4450 b->auto_save_failure_time = EMACS_SECS (after_time);
|
|
|
4451 }
|
|
|
4452 }
|
|
|
4453 }
|
|
|
4454
|
|
|
4455 /* Prevent another auto save till enough input events come in. */
|
|
|
4456 if (auto_saved)
|
|
|
4457 record_auto_save ();
|
|
|
4458
|
|
|
4459 /* If we didn't save anything into the listfile, remove the old
|
|
|
4460 one because nothing needed to be auto-saved. Do this afterwards
|
|
|
4461 rather than before in case we get a crash attempting to autosave
|
|
|
4462 (in that case we'd still want the old one around). */
|
|
|
4463 if (listdesc < 0 && !auto_saved && GC_STRINGP (listfile))
|
|
16
|
4464 unlink ((char *) XSTRING_DATA (listfile));
|
|
0
|
4465
|
|
|
4466 /* Show "...done" only if the echo area would otherwise be empty. */
|
|
|
4467 if (auto_saved && NILP (no_message)
|
|
|
4468 && NILP (clear_echo_area (selected_frame (), Qauto_saving, 0)))
|
|
|
4469 {
|
|
|
4470 static CONST unsigned char *msg
|
|
|
4471 = (CONST unsigned char *)"Auto-saving...done";
|
|
|
4472 echo_area_message (selected_frame (), msg, Qnil, 0,
|
|
|
4473 strlen ((CONST char *) msg), Qauto_saving);
|
|
|
4474 }
|
|
|
4475
|
|
|
4476 Vquit_flag = oquit;
|
|
|
4477
|
|
|
4478 RETURN_UNGCPRO (unbind_to (speccount, Qnil));
|
|
|
4479 }
|
|
|
4480
|
|
20
|
4481 DEFUN ("set-buffer-auto-saved", Fset_buffer_auto_saved, 0, 0, 0, /*
|
|
0
|
4482 Mark current buffer as auto-saved with its current text.
|
|
|
4483 No auto-save file will be written until the buffer changes again.
|
|
20
|
4484 */
|
|
|
4485 ())
|
|
0
|
4486 {
|
|
|
4487 current_buffer->auto_save_modified = BUF_MODIFF (current_buffer);
|
|
|
4488 current_buffer->save_length = make_int (BUF_SIZE (current_buffer));
|
|
|
4489 current_buffer->auto_save_failure_time = -1;
|
|
|
4490 return Qnil;
|
|
|
4491 }
|
|
|
4492
|
|
20
|
4493 DEFUN ("clear-buffer-auto-save-failure", Fclear_buffer_auto_save_failure, 0, 0, 0, /*
|
|
0
|
4494 Clear any record of a recent auto-save failure in the current buffer.
|
|
20
|
4495 */
|
|
|
4496 ())
|
|
0
|
4497 {
|
|
|
4498 current_buffer->auto_save_failure_time = -1;
|
|
|
4499 return Qnil;
|
|
|
4500 }
|
|
|
4501
|
|
20
|
4502 DEFUN ("recent-auto-save-p", Frecent_auto_save_p, 0, 0, 0, /*
|
|
0
|
4503 Return t if buffer has been auto-saved since last read in or saved.
|
|
20
|
4504 */
|
|
|
4505 ())
|
|
0
|
4506 {
|
|
|
4507 return (BUF_SAVE_MODIFF (current_buffer) <
|
|
|
4508 current_buffer->auto_save_modified) ? Qt : Qnil;
|
|
|
4509 }
|
|
|
4510
|
|
|
4511
|
|
|
4512 /************************************************************************/
|
|
|
4513 /* initialization */
|
|
|
4514 /************************************************************************/
|
|
|
4515
|
|
|
4516 void
|
|
|
4517 syms_of_fileio (void)
|
|
|
4518 {
|
|
|
4519 defsymbol (&Qexpand_file_name, "expand-file-name");
|
|
|
4520 defsymbol (&Qfile_truename, "file-truename");
|
|
|
4521 defsymbol (&Qsubstitute_in_file_name, "substitute-in-file-name");
|
|
|
4522 defsymbol (&Qdirectory_file_name, "directory-file-name");
|
|
|
4523 defsymbol (&Qfile_name_directory, "file-name-directory");
|
|
|
4524 defsymbol (&Qfile_name_nondirectory, "file-name-nondirectory");
|
|
|
4525 defsymbol (&Qunhandled_file_name_directory, "unhandled-file-name-directory");
|
|
|
4526 defsymbol (&Qfile_name_as_directory, "file-name-as-directory");
|
|
|
4527 defsymbol (&Qcopy_file, "copy-file");
|
|
|
4528 defsymbol (&Qmake_directory_internal, "make-directory-internal");
|
|
|
4529 defsymbol (&Qdelete_directory, "delete-directory");
|
|
|
4530 defsymbol (&Qdelete_file, "delete-file");
|
|
|
4531 defsymbol (&Qrename_file, "rename-file");
|
|
|
4532 defsymbol (&Qadd_name_to_file, "add-name-to-file");
|
|
|
4533 defsymbol (&Qmake_symbolic_link, "make-symbolic-link");
|
|
|
4534 defsymbol (&Qfile_exists_p, "file-exists-p");
|
|
|
4535 defsymbol (&Qfile_executable_p, "file-executable-p");
|
|
|
4536 defsymbol (&Qfile_readable_p, "file-readable-p");
|
|
|
4537 defsymbol (&Qfile_symlink_p, "file-symlink-p");
|
|
|
4538 defsymbol (&Qfile_writable_p, "file-writable-p");
|
|
|
4539 defsymbol (&Qfile_directory_p, "file-directory-p");
|
|
|
4540 defsymbol (&Qfile_regular_p, "file-regular-p");
|
|
|
4541 defsymbol (&Qfile_accessible_directory_p, "file-accessible-directory-p");
|
|
|
4542 defsymbol (&Qfile_modes, "file-modes");
|
|
|
4543 defsymbol (&Qset_file_modes, "set-file-modes");
|
|
|
4544 defsymbol (&Qfile_newer_than_file_p, "file-newer-than-file-p");
|
|
|
4545 defsymbol (&Qinsert_file_contents, "insert-file-contents");
|
|
|
4546 defsymbol (&Qwrite_region, "write-region");
|
|
|
4547 defsymbol (&Qverify_visited_file_modtime, "verify-visited-file-modtime");
|
|
|
4548 defsymbol (&Qset_visited_file_modtime, "set-visited-file-modtime");
|
|
|
4549 defsymbol (&Qset_buffer_modtime, "set-buffer-modtime");
|
|
|
4550 #ifdef DOS_NT
|
|
|
4551 defsymbol (&Qfind_buffer_file_type, "find-buffer-file-type");
|
|
|
4552 #endif /* DOS_NT */
|
|
|
4553 defsymbol (&Qcar_less_than_car, "car-less-than-car"); /* Vomitous! */
|
|
|
4554
|
|
|
4555 defsymbol (&Qfile_name_handler_alist, "file-name-handler-alist");
|
|
|
4556 defsymbol (&Qauto_save_hook, "auto-save-hook");
|
|
|
4557 defsymbol (&Qauto_save_error, "auto-save-error");
|
|
|
4558 defsymbol (&Qauto_saving, "auto-saving");
|
|
|
4559
|
|
|
4560 defsymbol (&Qformat_decode, "format-decode");
|
|
|
4561 defsymbol (&Qformat_annotate_function, "format-annotate-function");
|
|
|
4562
|
|
|
4563 defsymbol (&Qcompute_buffer_file_truename, "compute-buffer-file-truename");
|
|
|
4564 deferror (&Qfile_error, "file-error", "File error", Qio_error);
|
|
|
4565 deferror (&Qfile_already_exists, "file-already-exists",
|
|
|
4566 "File already exists", Qfile_error);
|
|
|
4567
|
|
20
|
4568 DEFSUBR (Ffind_file_name_handler);
|
|
|
4569
|
|
|
4570 DEFSUBR (Ffile_name_directory);
|
|
|
4571 DEFSUBR (Ffile_name_nondirectory);
|
|
|
4572 DEFSUBR (Funhandled_file_name_directory);
|
|
|
4573 DEFSUBR (Ffile_name_as_directory);
|
|
|
4574 DEFSUBR (Fdirectory_file_name);
|
|
|
4575 DEFSUBR (Fmake_temp_name);
|
|
|
4576 DEFSUBR (Fexpand_file_name);
|
|
|
4577 DEFSUBR (Ffile_truename);
|
|
|
4578 DEFSUBR (Fsubstitute_in_file_name);
|
|
|
4579 DEFSUBR (Fcopy_file);
|
|
|
4580 DEFSUBR (Fmake_directory_internal);
|
|
|
4581 DEFSUBR (Fdelete_directory);
|
|
|
4582 DEFSUBR (Fdelete_file);
|
|
|
4583 DEFSUBR (Frename_file);
|
|
|
4584 DEFSUBR (Fadd_name_to_file);
|
|
0
|
4585 #ifdef S_IFLNK
|
|
20
|
4586 DEFSUBR (Fmake_symbolic_link);
|
|
0
|
4587 #endif /* S_IFLNK */
|
|
|
4588 #ifdef VMS
|
|
20
|
4589 DEFSUBR (Fdefine_logical_name);
|
|
0
|
4590 #endif /* VMS */
|
|
|
4591 #ifdef HPUX_NET
|
|
20
|
4592 DEFSUBR (Fsysnetunam);
|
|
0
|
4593 #endif /* HPUX_NET */
|
|
20
|
4594 DEFSUBR (Ffile_name_absolute_p);
|
|
|
4595 DEFSUBR (Ffile_exists_p);
|
|
|
4596 DEFSUBR (Ffile_executable_p);
|
|
|
4597 DEFSUBR (Ffile_readable_p);
|
|
|
4598 DEFSUBR (Ffile_writable_p);
|
|
|
4599 DEFSUBR (Ffile_symlink_p);
|
|
|
4600 DEFSUBR (Ffile_directory_p);
|
|
|
4601 DEFSUBR (Ffile_accessible_directory_p);
|
|
|
4602 DEFSUBR (Ffile_regular_p);
|
|
|
4603 DEFSUBR (Ffile_modes);
|
|
|
4604 DEFSUBR (Fset_file_modes);
|
|
|
4605 DEFSUBR (Fset_default_file_modes);
|
|
|
4606 DEFSUBR (Fdefault_file_modes);
|
|
|
4607 DEFSUBR (Funix_sync);
|
|
|
4608 DEFSUBR (Ffile_newer_than_file_p);
|
|
|
4609 DEFSUBR (Finsert_file_contents_internal);
|
|
|
4610 DEFSUBR (Fwrite_region_internal);
|
|
|
4611 DEFSUBR (Fcar_less_than_car); /* Vomitous! */
|
|
|
4612 DEFSUBR (Fcdr_less_than_cdr); /* Yeah oh yeah bucko .... */
|
|
0
|
4613 #if 0
|
|
20
|
4614 DEFSUBR (Fencrypt_string);
|
|
|
4615 DEFSUBR (Fdecrypt_string);
|
|
0
|
4616 #endif
|
|
20
|
4617 DEFSUBR (Fverify_visited_file_modtime);
|
|
|
4618 DEFSUBR (Fclear_visited_file_modtime);
|
|
|
4619 DEFSUBR (Fvisited_file_modtime);
|
|
|
4620 DEFSUBR (Fset_visited_file_modtime);
|
|
|
4621 DEFSUBR (Fset_buffer_modtime);
|
|
|
4622
|
|
|
4623 DEFSUBR (Fdo_auto_save);
|
|
|
4624 DEFSUBR (Fset_buffer_auto_saved);
|
|
|
4625 DEFSUBR (Fclear_buffer_auto_save_failure);
|
|
|
4626 DEFSUBR (Frecent_auto_save_p);
|
|
0
|
4627 }
|
|
|
4628
|
|
|
4629 void
|
|
|
4630 vars_of_fileio (void)
|
|
|
4631 {
|
|
|
4632 DEFVAR_LISP ("auto-save-file-format", &Vauto_save_file_format /*
|
|
|
4633 *Format in which to write auto-save files.
|
|
|
4634 Should be a list of symbols naming formats that are defined in `format-alist'.
|
|
|
4635 If it is t, which is the default, auto-save files are written in the
|
|
|
4636 same format as a regular save would use.
|
|
|
4637 */ );
|
|
|
4638 Vauto_save_file_format = Qt;
|
|
|
4639
|
|
|
4640 DEFVAR_BOOL ("vms-stmlf-recfm", &vms_stmlf_recfm /*
|
|
|
4641 *Non-nil means write new files with record format `stmlf'.
|
|
|
4642 nil means use format `var'. This variable is meaningful only on VMS.
|
|
|
4643 */ );
|
|
|
4644 vms_stmlf_recfm = 0;
|
|
|
4645
|
|
|
4646 DEFVAR_LISP ("file-name-handler-alist", &Vfile_name_handler_alist /*
|
|
|
4647 *Alist of elements (REGEXP . HANDLER) for file names handled specially.
|
|
|
4648 If a file name matches REGEXP, then all I/O on that file is done by calling
|
|
|
4649 HANDLER.
|
|
|
4650
|
|
|
4651 The first argument given to HANDLER is the name of the I/O primitive
|
|
|
4652 to be handled; the remaining arguments are the arguments that were
|
|
|
4653 passed to that primitive. For example, if you do
|
|
|
4654 (file-exists-p FILENAME)
|
|
|
4655 and FILENAME is handled by HANDLER, then HANDLER is called like this:
|
|
|
4656 (funcall HANDLER 'file-exists-p FILENAME)
|
|
|
4657 The function `find-file-name-handler' checks this list for a handler
|
|
|
4658 for its argument.
|
|
|
4659 */ );
|
|
|
4660 Vfile_name_handler_alist = Qnil;
|
|
|
4661
|
|
|
4662 DEFVAR_LISP ("after-insert-file-functions", &Vafter_insert_file_functions /*
|
|
|
4663 A list of functions to be called at the end of `insert-file-contents'.
|
|
|
4664 Each is passed one argument, the number of bytes inserted. It should return
|
|
|
4665 the new byte count, and leave point the same. If `insert-file-contents' is
|
|
|
4666 intercepted by a handler from `file-name-handler-alist', that handler is
|
|
|
4667 responsible for calling the after-insert-file-functions if appropriate.
|
|
|
4668 */ );
|
|
|
4669 Vafter_insert_file_functions = Qnil;
|
|
|
4670
|
|
|
4671 DEFVAR_LISP ("write-region-annotate-functions",
|
|
|
4672 &Vwrite_region_annotate_functions /*
|
|
|
4673 A list of functions to be called at the start of `write-region'.
|
|
|
4674 Each is passed two arguments, START and END as for `write-region'.
|
|
|
4675 It should return a list of pairs (POSITION . STRING) of strings to be
|
|
|
4676 effectively inserted at the specified positions of the file being written
|
|
|
4677 \(1 means to insert before the first byte written). The POSITIONs must be
|
|
|
4678 sorted into increasing order. If there are several functions in the list,
|
|
|
4679 the several lists are merged destructively.
|
|
|
4680 */ );
|
|
|
4681 Vwrite_region_annotate_functions = Qnil;
|
|
|
4682
|
|
|
4683 DEFVAR_LISP ("write-region-annotations-so-far",
|
|
|
4684 &Vwrite_region_annotations_so_far /*
|
|
|
4685 When an annotation function is called, this holds the previous annotations.
|
|
|
4686 These are the annotations made by other annotation functions
|
|
|
4687 that were already called. See also `write-region-annotate-functions'.
|
|
|
4688 */ );
|
|
|
4689 Vwrite_region_annotations_so_far = Qnil;
|
|
|
4690
|
|
|
4691 DEFVAR_LISP ("inhibit-file-name-handlers", &Vinhibit_file_name_handlers /*
|
|
|
4692 A list of file name handlers that temporarily should not be used.
|
|
|
4693 This applies only to the operation `inhibit-file-name-operation'.
|
|
|
4694 */ );
|
|
|
4695 Vinhibit_file_name_handlers = Qnil;
|
|
|
4696
|
|
|
4697 DEFVAR_LISP ("inhibit-file-name-operation", &Vinhibit_file_name_operation /*
|
|
|
4698 The operation for which `inhibit-file-name-handlers' is applicable.
|
|
|
4699 */ );
|
|
|
4700 Vinhibit_file_name_operation = Qnil;
|
|
|
4701
|
|
|
4702 DEFVAR_LISP ("auto-save-list-file-name", &Vauto_save_list_file_name /*
|
|
|
4703 File name in which we write a list of all auto save file names.
|
|
|
4704 */ );
|
|
|
4705 Vauto_save_list_file_name = Qnil;
|
|
|
4706
|
|
|
4707 DEFVAR_BOOL ("disable-auto-save-when-buffer-shrinks",
|
|
|
4708 &disable_auto_save_when_buffer_shrinks /*
|
|
|
4709 If non-nil, auto-saving is disabled when a buffer shrinks too much.
|
|
|
4710 This is to prevent you from losing your edits if you accidentally
|
|
|
4711 delete a large chunk of the buffer and don't notice it until too late.
|
|
|
4712 Saving the buffer normally turns auto-save back on.
|
|
|
4713 */ );
|
|
|
4714 disable_auto_save_when_buffer_shrinks = 1;
|
|
|
4715 }
|
