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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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183
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53 #endif /* HPUX */
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0
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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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151
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62 /* Alist of elements (REGEXP . HANDLER) for file names
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0
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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 int disable_auto_save_when_buffer_shrinks;
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86
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87 Lisp_Object Qfile_name_handler_alist;
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88
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89 /* These variables describe handlers that have "already" had a chance
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90 to handle the current operation.
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91
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92 Vinhibit_file_name_handlers is a list of file name handlers.
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93 Vinhibit_file_name_operation is the operation being handled.
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94 If we try to handle that operation, we ignore those handlers. */
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95
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96 static Lisp_Object Vinhibit_file_name_handlers;
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97 static Lisp_Object Vinhibit_file_name_operation;
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98
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99 Lisp_Object Qfile_error, Qfile_already_exists;
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100
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101 Lisp_Object Qauto_save_hook;
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102 Lisp_Object Qauto_save_error;
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103 Lisp_Object Qauto_saving;
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104
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105 Lisp_Object Qcar_less_than_car;
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106
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107 Lisp_Object Qcompute_buffer_file_truename;
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108
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109 /* signal a file error when errno contains a meaningful value. */
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110
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111 DOESNT_RETURN
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112 report_file_error (CONST char *string, Lisp_Object data)
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113 {
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114
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114 /* #### dmoore - This uses current_buffer, better make sure no one
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115 has GC'd the current buffer. File handlers are giving me a headache
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116 maybe I'll just always protect current_buffer around all of those
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117 calls. */
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118
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0
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119 signal_error (Qfile_error,
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120 Fcons (build_translated_string (string),
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151
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121 Fcons (lisp_strerror (errno), data)));
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0
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122 }
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123
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124 void
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125 maybe_report_file_error (CONST char *string, Lisp_Object data,
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126 Lisp_Object class, Error_behavior errb)
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127 {
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128 /* Optimization: */
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129 if (ERRB_EQ (errb, ERROR_ME_NOT))
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130 return;
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131
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132 maybe_signal_error (Qfile_error,
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133 Fcons (build_translated_string (string),
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151
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134 Fcons (lisp_strerror (errno), data)),
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0
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135 class, errb);
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136 }
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137
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138 /* signal a file error when errno does not contain a meaningful value. */
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139
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140 DOESNT_RETURN
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141 signal_file_error (CONST char *string, Lisp_Object data)
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142 {
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143 signal_error (Qfile_error,
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144 list2 (build_translated_string (string), data));
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145 }
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146
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147 void
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148 maybe_signal_file_error (CONST char *string, Lisp_Object data,
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149 Lisp_Object class, Error_behavior errb)
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150 {
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151 /* Optimization: */
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152 if (ERRB_EQ (errb, ERROR_ME_NOT))
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153 return;
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154 maybe_signal_error (Qfile_error,
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155 list2 (build_translated_string (string), data),
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156 class, errb);
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157 }
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158
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159 DOESNT_RETURN
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160 signal_double_file_error (CONST char *string1, CONST char *string2,
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161 Lisp_Object data)
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162 {
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163 signal_error (Qfile_error,
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164 list3 (build_translated_string (string1),
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165 build_translated_string (string2),
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166 data));
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167 }
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168
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169 void
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170 maybe_signal_double_file_error (CONST char *string1, CONST char *string2,
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171 Lisp_Object data, Lisp_Object class,
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172 Error_behavior errb)
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173 {
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174 /* Optimization: */
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175 if (ERRB_EQ (errb, ERROR_ME_NOT))
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176 return;
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177 maybe_signal_error (Qfile_error,
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178 list3 (build_translated_string (string1),
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179 build_translated_string (string2),
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180 data),
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181 class, errb);
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182 }
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183
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184 DOESNT_RETURN
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185 signal_double_file_error_2 (CONST char *string1, CONST char *string2,
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186 Lisp_Object data1, Lisp_Object data2)
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187 {
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188 signal_error (Qfile_error,
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151
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189 list4 (build_translated_string (string1),
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0
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190 build_translated_string (string2),
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191 data1, data2));
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192 }
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193
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194 void
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195 maybe_signal_double_file_error_2 (CONST char *string1, CONST char *string2,
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196 Lisp_Object data1, Lisp_Object data2,
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197 Lisp_Object class, Error_behavior errb)
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198 {
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199 /* Optimization: */
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200 if (ERRB_EQ (errb, ERROR_ME_NOT))
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201 return;
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202 maybe_signal_error (Qfile_error,
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151
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203 list4 (build_translated_string (string1),
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0
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204 build_translated_string (string2),
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205 data1, data2),
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206 class, errb);
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207 }
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208
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151
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209
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210 /* Just like strerror(3), except return a lisp string instead of char *.
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211 The string needs to be converted since it may be localized.
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212 Perhaps this should use strerror-coding-system instead? */
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213 Lisp_Object
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214 lisp_strerror (int errnum)
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215 {
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216 return build_ext_string (strerror (errnum), FORMAT_NATIVE);
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217 }
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218
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0
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219 static Lisp_Object
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220 close_file_unwind (Lisp_Object fd)
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221 {
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222 if (CONSP (fd))
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223 {
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224 if (INTP (XCAR (fd)))
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225 close (XINT (XCAR (fd)));
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226
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227 free_cons (XCONS (fd));
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228 }
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229 else
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230 close (XINT (fd));
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231
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232 return Qnil;
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233 }
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234
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235 static Lisp_Object
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236 close_stream_unwind (Lisp_Object stream)
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237 {
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238 Lstream_close (XLSTREAM (stream));
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239 return Qnil;
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240 }
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241
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242 /* Restore point, having saved it as a marker. */
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243
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244 static Lisp_Object
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245 restore_point_unwind (Lisp_Object point_marker)
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246 {
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247 BUF_SET_PT (current_buffer, marker_position (point_marker));
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173
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248 return Fset_marker (point_marker, Qnil, Qnil);
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0
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249 }
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250
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251 /* Versions of read() and write() that allow quitting out of the actual
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252 I/O. We don't use immediate_quit (i.e. direct longjmp() out of the
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253 signal handler) because that's way too losing.
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254
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255 (#### Actually, longjmp()ing out of the signal handler may not be
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256 as losing as I thought. See sys_do_signal() in sysdep.c.)
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257
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258 Solaris include files declare the return value as ssize_t.
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259 Is that standard? */
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260 int
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261 read_allowing_quit (int fildes, void *buf, unsigned int nbyte)
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262 {
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263 int nread;
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264 QUIT;
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265
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266 nread = sys_read_1 (fildes, buf, nbyte, 1);
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267 return nread;
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268 }
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269
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270 int
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271 write_allowing_quit (int fildes, CONST void *buf, unsigned int nbyte)
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272 {
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273 int nread;
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274
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275 QUIT;
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276 nread = sys_write_1 (fildes, buf, nbyte, 1);
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277 return nread;
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278 }
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279
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280
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281 Lisp_Object Qexpand_file_name;
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282 Lisp_Object Qfile_truename;
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283 Lisp_Object Qsubstitute_in_file_name;
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284 Lisp_Object Qdirectory_file_name;
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285 Lisp_Object Qfile_name_directory;
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286 Lisp_Object Qfile_name_nondirectory;
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287 Lisp_Object Qunhandled_file_name_directory;
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288 Lisp_Object Qfile_name_as_directory;
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289 Lisp_Object Qcopy_file;
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290 Lisp_Object Qmake_directory_internal;
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291 Lisp_Object Qdelete_directory;
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292 Lisp_Object Qdelete_file;
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293 Lisp_Object Qrename_file;
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294 Lisp_Object Qadd_name_to_file;
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295 Lisp_Object Qmake_symbolic_link;
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296 Lisp_Object Qfile_exists_p;
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297 Lisp_Object Qfile_executable_p;
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298 Lisp_Object Qfile_readable_p;
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299 Lisp_Object Qfile_symlink_p;
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300 Lisp_Object Qfile_writable_p;
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301 Lisp_Object Qfile_directory_p;
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302 Lisp_Object Qfile_regular_p;
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303 Lisp_Object Qfile_accessible_directory_p;
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304 Lisp_Object Qfile_modes;
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305 Lisp_Object Qset_file_modes;
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306 Lisp_Object Qfile_newer_than_file_p;
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307 Lisp_Object Qinsert_file_contents;
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308 Lisp_Object Qwrite_region;
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309 Lisp_Object Qverify_visited_file_modtime;
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310 Lisp_Object Qset_visited_file_modtime;
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311 Lisp_Object Qset_buffer_modtime;
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312
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313 /* If FILENAME is handled specially on account of its syntax,
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314 return its handler function. Otherwise, return nil. */
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315
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20
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316 DEFUN ("find-file-name-handler", Ffind_file_name_handler, 1, 2, 0, /*
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0
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317 Return FILENAME's handler function for OPERATION, if it has one.
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318 Otherwise, return nil.
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319 A file name is handled if one of the regular expressions in
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320 `file-name-handler-alist' matches it.
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321
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322 If OPERATION equals `inhibit-file-name-operation', then we ignore
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323 any handlers that are members of `inhibit-file-name-handlers',
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324 but we still do run any other handlers. This lets handlers
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325 use the standard functions without calling themselves recursively.
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20
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326 */
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327 (filename, operation))
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0
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328 {
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116
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329 /* This function does not GC */
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0
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330 /* This function must not munge the match data. */
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331 Lisp_Object chain, inhibited_handlers;
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332
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333 CHECK_STRING (filename);
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334
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335 if (EQ (operation, Vinhibit_file_name_operation))
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336 inhibited_handlers = Vinhibit_file_name_handlers;
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337 else
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338 inhibited_handlers = Qnil;
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339
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340 for (chain = Vfile_name_handler_alist; CONSP (chain);
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341 chain = XCDR (chain))
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342 {
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343 Lisp_Object elt = XCAR (chain);
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344 if (CONSP (elt))
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345 {
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346 Lisp_Object string;
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347 string = XCAR (elt);
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348 if (STRINGP (string)
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349 && (fast_lisp_string_match (string, filename) >= 0))
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350 {
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351 Lisp_Object handler = XCDR (elt);
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352 if (NILP (Fmemq (handler, inhibited_handlers)))
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173
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353 return handler;
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0
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354 }
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355 }
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356 QUIT;
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357 }
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358 return Qnil;
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359 }
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360
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361 static Lisp_Object
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362 call2_check_string (Lisp_Object fn, Lisp_Object arg0, Lisp_Object arg1)
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363 {
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116
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364 /* This function can call lisp */
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0
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365 Lisp_Object result = call2 (fn, arg0, arg1);
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366 CHECK_STRING (result);
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173
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367 return result;
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0
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368 }
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369
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370 static Lisp_Object
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114
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371 call2_check_string_or_nil (Lisp_Object fn, Lisp_Object arg0, Lisp_Object arg1)
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372 {
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116
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373 /* This function can call lisp */
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114
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374 Lisp_Object result = call2 (fn, arg0, arg1);
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375 if (!NILP (result))
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376 CHECK_STRING (result);
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173
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377 return result;
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114
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378 }
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379
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380 static Lisp_Object
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151
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381 call3_check_string (Lisp_Object fn, Lisp_Object arg0,
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0
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382 Lisp_Object arg1, Lisp_Object arg2)
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383 {
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116
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384 /* This function can call lisp */
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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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173
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387 return result;
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0
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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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209
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395 Given a Unix syntax file name, returns a string ending in slash.
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20
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396 */
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397 (file))
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0
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398 {
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120
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399 /* This function can GC. GC checked 1997.04.06. */
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0
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400 Bufbyte *beg;
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401 Bufbyte *p;
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402 Lisp_Object handler;
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403
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404 CHECK_STRING (file);
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405
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|
|
406 /* If the file name has special constructs in it,
|
|
|
407 call the corresponding file handler. */
|
|
|
408 handler = Ffind_file_name_handler (file, Qfile_name_directory);
|
|
|
409 if (!NILP (handler))
|
|
173
|
410 return call2_check_string_or_nil (handler, Qfile_name_directory, file);
|
|
0
|
411
|
|
|
412 #ifdef FILE_SYSTEM_CASE
|
|
|
413 file = FILE_SYSTEM_CASE (file);
|
|
|
414 #endif
|
|
16
|
415 beg = XSTRING_DATA (file);
|
|
|
416 p = beg + XSTRING_LENGTH (file);
|
|
0
|
417
|
|
209
|
418 while (p != beg && !IS_ANY_SEP (p[-1]))
|
|
|
419 p--;
|
|
0
|
420
|
|
|
421 if (p == beg)
|
|
|
422 return Qnil;
|
|
|
423 #ifdef DOS_NT
|
|
|
424 /* Expansion of "c:" to drive and default directory. */
|
|
|
425 /* (NT does the right thing.) */
|
|
|
426 if (p == beg + 2 && beg[1] == ':')
|
|
|
427 {
|
|
|
428 int drive = (*beg) - 'a';
|
|
|
429 /* MAXPATHLEN+1 is guaranteed to be enough space for getdefdir. */
|
|
|
430 Bufbyte *res = (Bufbyte *) alloca (MAXPATHLEN + 5);
|
|
|
431 unsigned char *res1;
|
|
|
432 #ifdef WINDOWSNT
|
|
|
433 res1 = res;
|
|
|
434 /* The NT version places the drive letter at the beginning already. */
|
|
|
435 #else /* not WINDOWSNT */
|
|
|
436 /* On MSDOG we must put the drive letter in by hand. */
|
|
|
437 res1 = res + 2;
|
|
|
438 #endif /* not WINDOWSNT */
|
|
151
|
439 if (getdefdir (drive + 1, res))
|
|
0
|
440 {
|
|
|
441 #ifdef MSDOS
|
|
|
442 res[0] = drive + 'a';
|
|
|
443 res[1] = ':';
|
|
|
444 #endif /* MSDOS */
|
|
|
445 if (IS_DIRECTORY_SEP (res[strlen ((char *) res) - 1]))
|
|
|
446 strcat ((char *) res, "/");
|
|
|
447 beg = res;
|
|
|
448 p = beg + strlen ((char *) beg);
|
|
|
449 }
|
|
|
450 }
|
|
|
451 #endif /* DOS_NT */
|
|
|
452 return make_string (beg, p - beg);
|
|
|
453 }
|
|
|
454
|
|
20
|
455 DEFUN ("file-name-nondirectory", Ffile_name_nondirectory, 1, 1, 0, /*
|
|
0
|
456 Return file name NAME sans its directory.
|
|
|
457 For example, in a Unix-syntax file name,
|
|
|
458 this is everything after the last slash,
|
|
|
459 or the entire name if it contains no slash.
|
|
20
|
460 */
|
|
|
461 (file))
|
|
0
|
462 {
|
|
120
|
463 /* This function can GC. GC checked 1997.04.06. */
|
|
0
|
464 Bufbyte *beg, *p, *end;
|
|
|
465 Lisp_Object handler;
|
|
|
466
|
|
|
467 CHECK_STRING (file);
|
|
|
468
|
|
|
469 /* If the file name has special constructs in it,
|
|
|
470 call the corresponding file handler. */
|
|
|
471 handler = Ffind_file_name_handler (file, Qfile_name_nondirectory);
|
|
|
472 if (!NILP (handler))
|
|
173
|
473 return call2_check_string (handler, Qfile_name_nondirectory, file);
|
|
0
|
474
|
|
16
|
475 beg = XSTRING_DATA (file);
|
|
|
476 end = p = beg + XSTRING_LENGTH (file);
|
|
0
|
477
|
|
209
|
478 while (p != beg && !IS_ANY_SEP (p[-1]))
|
|
|
479 p--;
|
|
0
|
480
|
|
|
481 return make_string (p, end - p);
|
|
|
482 }
|
|
|
483
|
|
20
|
484 DEFUN ("unhandled-file-name-directory", Funhandled_file_name_directory, 1, 1, 0, /*
|
|
0
|
485 Return a directly usable directory name somehow associated with FILENAME.
|
|
|
486 A `directly usable' directory name is one that may be used without the
|
|
|
487 intervention of any file handler.
|
|
|
488 If FILENAME is a directly usable file itself, return
|
|
|
489 (file-name-directory FILENAME).
|
|
|
490 The `call-process' and `start-process' functions use this function to
|
|
|
491 get a current directory to run processes in.
|
|
20
|
492 */
|
|
70
|
493 (filename))
|
|
0
|
494 {
|
|
120
|
495 /* This function can GC. GC checked 1997.04.06. */
|
|
0
|
496 Lisp_Object handler;
|
|
|
497
|
|
|
498 /* If the file name has special constructs in it,
|
|
|
499 call the corresponding file handler. */
|
|
|
500 handler = Ffind_file_name_handler (filename, Qunhandled_file_name_directory);
|
|
|
501 if (!NILP (handler))
|
|
|
502 return call2 (handler, Qunhandled_file_name_directory,
|
|
|
503 filename);
|
|
|
504
|
|
|
505 return Ffile_name_directory (filename);
|
|
|
506 }
|
|
|
507
|
|
|
508
|
|
|
509 static char *
|
|
|
510 file_name_as_directory (char *out, char *in)
|
|
|
511 {
|
|
|
512 int size = strlen (in) - 1;
|
|
|
513
|
|
|
514 strcpy (out, in);
|
|
|
515
|
|
|
516 /* For Unix syntax, Append a slash if necessary */
|
|
|
517 if (!IS_ANY_SEP (out[size]))
|
|
|
518 {
|
|
|
519 out[size + 1] = DIRECTORY_SEP;
|
|
|
520 out[size + 2] = '\0';
|
|
|
521 }
|
|
|
522 return out;
|
|
|
523 }
|
|
|
524
|
|
20
|
525 DEFUN ("file-name-as-directory", Ffile_name_as_directory, 1, 1, 0, /*
|
|
0
|
526 Return a string representing file FILENAME interpreted as a directory.
|
|
|
527 This operation exists because a directory is also a file, but its name as
|
|
|
528 a directory is different from its name as a file.
|
|
|
529 The result can be used as the value of `default-directory'
|
|
|
530 or passed as second argument to `expand-file-name'.
|
|
|
531 For a Unix-syntax file name, just appends a slash.
|
|
20
|
532 */
|
|
|
533 (file))
|
|
0
|
534 {
|
|
120
|
535 /* This function can GC. GC checked 1997.04.06. */
|
|
0
|
536 char *buf;
|
|
|
537 Lisp_Object handler;
|
|
|
538
|
|
|
539 CHECK_STRING (file);
|
|
|
540
|
|
|
541 /* If the file name has special constructs in it,
|
|
|
542 call the corresponding file handler. */
|
|
|
543 handler = Ffind_file_name_handler (file, Qfile_name_as_directory);
|
|
|
544 if (!NILP (handler))
|
|
173
|
545 return call2_check_string (handler, Qfile_name_as_directory, file);
|
|
0
|
546
|
|
16
|
547 buf = (char *) alloca (XSTRING_LENGTH (file) + 10);
|
|
0
|
548 return build_string (file_name_as_directory
|
|
16
|
549 (buf, (char *) XSTRING_DATA (file)));
|
|
0
|
550 }
|
|
|
551
|
|
|
552 /*
|
|
|
553 * Convert from directory name to filename.
|
|
|
554 * On UNIX, it's simple: just make sure there is a terminating /
|
|
|
555
|
|
|
556 * Value is nonzero if the string output is different from the input.
|
|
|
557 */
|
|
|
558
|
|
|
559 static int
|
|
|
560 directory_file_name (CONST char *src, char *dst)
|
|
|
561 {
|
|
|
562 long slen;
|
|
|
563
|
|
|
564 slen = strlen (src);
|
|
|
565 /* Process as Unix format: just remove any final slash.
|
|
|
566 But leave "/" unchanged; do not change it to "". */
|
|
|
567 strcpy (dst, src);
|
|
|
568 #ifdef APOLLO
|
|
|
569 /* Handle // as root for apollo's. */
|
|
|
570 if ((slen > 2 && dst[slen - 1] == '/')
|
|
|
571 || (slen > 1 && dst[0] != '/' && dst[slen - 1] == '/'))
|
|
|
572 dst[slen - 1] = 0;
|
|
|
573 #else
|
|
151
|
574 if (slen > 1
|
|
0
|
575 && IS_DIRECTORY_SEP (dst[slen - 1])
|
|
|
576 #ifdef DOS_NT
|
|
|
577 && !IS_ANY_SEP (dst[slen - 2])
|
|
|
578 #endif
|
|
|
579 )
|
|
|
580 dst[slen - 1] = 0;
|
|
|
581 #endif
|
|
|
582 return 1;
|
|
|
583 }
|
|
|
584
|
|
20
|
585 DEFUN ("directory-file-name", Fdirectory_file_name, 1, 1, 0, /*
|
|
0
|
586 Return the file name of the directory named DIR.
|
|
|
587 This is the name of the file that holds the data for the directory DIR.
|
|
|
588 This operation exists because a directory is also a file, but its name as
|
|
|
589 a directory is different from its name as a file.
|
|
|
590 In Unix-syntax, this function just removes the final slash.
|
|
20
|
591 */
|
|
|
592 (directory))
|
|
0
|
593 {
|
|
120
|
594 /* This function can GC. GC checked 1997.04.06. */
|
|
0
|
595 char *buf;
|
|
|
596 Lisp_Object handler;
|
|
|
597
|
|
|
598 CHECK_STRING (directory);
|
|
|
599
|
|
|
600 #if 0 /* #### WTF? */
|
|
|
601 if (NILP (directory))
|
|
|
602 return Qnil;
|
|
|
603 #endif
|
|
|
604
|
|
|
605 /* If the file name has special constructs in it,
|
|
|
606 call the corresponding file handler. */
|
|
|
607 handler = Ffind_file_name_handler (directory, Qdirectory_file_name);
|
|
|
608 if (!NILP (handler))
|
|
173
|
609 return call2_check_string (handler, Qdirectory_file_name, directory);
|
|
16
|
610 buf = (char *) alloca (XSTRING_LENGTH (directory) + 20);
|
|
|
611 directory_file_name ((char *) XSTRING_DATA (directory), buf);
|
|
0
|
612 return build_string (buf);
|
|
|
613 }
|
|
|
614
|
|
20
|
615 DEFUN ("make-temp-name", Fmake_temp_name, 1, 1, 0, /*
|
|
0
|
616 Generate temporary file name (string) starting with PREFIX (a string).
|
|
|
617 The Emacs process number forms part of the result,
|
|
|
618 so there is no danger of generating a name being used by another process.
|
|
20
|
619 */
|
|
|
620 (prefix))
|
|
0
|
621 {
|
|
|
622 CONST char suffix[] = "XXXXXX";
|
|
|
623 Bufbyte *data;
|
|
|
624 Bytecount len;
|
|
|
625 Lisp_Object val;
|
|
|
626
|
|
|
627 CHECK_STRING (prefix);
|
|
16
|
628 len = XSTRING_LENGTH (prefix);
|
|
0
|
629 val = make_uninit_string (len + countof (suffix) - 1);
|
|
16
|
630 data = XSTRING_DATA (val);
|
|
|
631 memcpy (data, XSTRING_DATA (prefix), len);
|
|
0
|
632 memcpy (data + len, suffix, countof (suffix));
|
|
|
633 /* !!#### does mktemp() Mule-encapsulate? */
|
|
|
634 mktemp ((char *) data);
|
|
|
635
|
|
|
636 return val;
|
|
|
637 }
|
|
|
638
|
|
20
|
639 DEFUN ("expand-file-name", Fexpand_file_name, 1, 2, 0, /*
|
|
0
|
640 Convert FILENAME to absolute, and canonicalize it.
|
|
|
641 Second arg DEFAULT is directory to start with if FILENAME is relative
|
|
|
642 (does not start with slash); if DEFAULT is nil or missing,
|
|
|
643 the current buffer's value of default-directory is used.
|
|
151
|
644 Path components that are `.' are removed, and
|
|
0
|
645 path components followed by `..' are removed, along with the `..' itself;
|
|
|
646 note that these simplifications are done without checking the resulting
|
|
|
647 paths in the file system.
|
|
|
648 An initial `~/' expands to your home directory.
|
|
|
649 An initial `~USER/' expands to USER's home directory.
|
|
|
650 See also the function `substitute-in-file-name'.
|
|
20
|
651 */
|
|
173
|
652 (name, default_))
|
|
0
|
653 {
|
|
120
|
654 /* This function can GC. GC checked 1997.04.06. */
|
|
0
|
655 Bufbyte *nm;
|
|
151
|
656
|
|
0
|
657 Bufbyte *newdir, *p, *o;
|
|
|
658 int tlen;
|
|
|
659 Bufbyte *target;
|
|
|
660 struct passwd *pw;
|
|
|
661 #ifdef DOS_NT
|
|
|
662 /* Demacs 1.1.2 91/10/20 Manabu Higashida */
|
|
|
663 int drive = -1;
|
|
|
664 int relpath = 0;
|
|
|
665 Bufbyte *tmp, *defdir;
|
|
|
666 #endif /* DOS_NT */
|
|
|
667 Lisp_Object handler;
|
|
151
|
668
|
|
0
|
669 CHECK_STRING (name);
|
|
|
670
|
|
|
671 /* If the file name has special constructs in it,
|
|
|
672 call the corresponding file handler. */
|
|
|
673 handler = Ffind_file_name_handler (name, Qexpand_file_name);
|
|
|
674 if (!NILP (handler))
|
|
173
|
675 return call3_check_string (handler, Qexpand_file_name, name, default_);
|
|
|
676
|
|
|
677 /* Use the buffer's default-directory if DEFAULT_ is omitted. */
|
|
|
678 if (NILP (default_))
|
|
|
679 default_ = current_buffer->directory;
|
|
|
680 if (NILP (default_)) /* this should be a meaningful error */
|
|
0
|
681 {
|
|
|
682 /* #### If we had a minibuffer-only frame up then current_buffer
|
|
|
683 is likely to not have a directory setting. We should
|
|
|
684 probably redo things to make sure that current_buffer stays
|
|
|
685 set to something sensible. */
|
|
|
686 if (!preparing_for_armageddon)
|
|
|
687 signal_simple_error ("default-directory is not set",
|
|
|
688 make_buffer (current_buffer));
|
|
|
689 }
|
|
|
690 else
|
|
173
|
691 CHECK_STRING (default_);
|
|
|
692
|
|
|
693 if (!NILP (default_))
|
|
0
|
694 {
|
|
114
|
695 struct gcpro gcpro1;
|
|
|
696
|
|
173
|
697 GCPRO1 (default_); /* might be current_buffer->directory */
|
|
|
698 handler = Ffind_file_name_handler (default_, Qexpand_file_name);
|
|
114
|
699 UNGCPRO;
|
|
0
|
700 if (!NILP (handler))
|
|
173
|
701 return call3 (handler, Qexpand_file_name, name, default_);
|
|
0
|
702 }
|
|
|
703
|
|
173
|
704 /* Make sure DEFAULT_ is properly expanded.
|
|
0
|
705 It would be better to do this down below where we actually use
|
|
173
|
706 default_. Unfortunately, calling Fexpand_file_name recursively
|
|
0
|
707 could invoke GC, and the strings might be relocated. This would
|
|
|
708 be annoying because we have pointers into strings lying around
|
|
|
709 that would need adjusting, and people would add new pointers to
|
|
|
710 the code and forget to adjust them, resulting in intermittent bugs.
|
|
|
711 Putting this call here avoids all that crud.
|
|
|
712
|
|
|
713 The EQ test avoids infinite recursion. */
|
|
173
|
714 if (! NILP(default_) && !EQ (default_, name)
|
|
0
|
715 /* This saves time in a common case. */
|
|
173
|
716 && ! (XSTRING_LENGTH (default_) >= 3
|
|
|
717 && (IS_DIRECTORY_SEP (XSTRING_BYTE (default_, 0))
|
|
|
718 || IS_DEVICE_SEP (XSTRING_BYTE (default_, 1)))))
|
|
0
|
719 {
|
|
|
720 struct gcpro gcpro1;
|
|
|
721
|
|
173
|
722 GCPRO1 (default_); /* may be current_buffer->directory */
|
|
|
723 default_ = Fexpand_file_name (default_, Qnil);
|
|
0
|
724 UNGCPRO;
|
|
|
725 }
|
|
|
726
|
|
|
727 #ifdef FILE_SYSTEM_CASE
|
|
|
728 name = FILE_SYSTEM_CASE (name);
|
|
|
729 #endif
|
|
|
730
|
|
114
|
731 /* #### dmoore - this is ugly, clean this up. Looks like nm
|
|
|
732 pointing into name should be safe during all of this, though. */
|
|
16
|
733 nm = XSTRING_DATA (name);
|
|
151
|
734
|
|
0
|
735 #ifdef MSDOS
|
|
|
736 /* First map all backslashes to slashes. */
|
|
|
737 dostounix_filename (nm = strcpy (alloca (strlen (nm) + 1), nm));
|
|
|
738 #endif
|
|
|
739
|
|
|
740 #ifdef DOS_NT
|
|
|
741 /* Now strip drive name. */
|
|
|
742 {
|
|
|
743 Bufbyte *colon = strrchr (nm, ':');
|
|
|
744 if (colon)
|
|
|
745 if (nm == colon)
|
|
|
746 nm++;
|
|
|
747 else
|
|
|
748 {
|
|
|
749 drive = colon[-1];
|
|
|
750 nm = colon + 1;
|
|
|
751 if (!IS_DIRECTORY_SEP (*nm))
|
|
|
752 {
|
|
|
753 defdir = alloca (MAXPATHLEN + 1);
|
|
|
754 relpath = getdefdir (tolower (drive) - 'a' + 1, defdir);
|
|
|
755 }
|
|
151
|
756 }
|
|
0
|
757 }
|
|
|
758 #endif /* DOS_NT */
|
|
|
759
|
|
189
|
760 /* We *don't* want to handle // and /~ that way. */
|
|
|
761 #if 0
|
|
0
|
762 /* Handle // and /~ in middle of file name
|
|
|
763 by discarding everything through the first / of that sequence. */
|
|
|
764 p = nm;
|
|
|
765 while (*p)
|
|
|
766 {
|
|
|
767 /* Since we know the path is absolute, we can assume that each
|
|
|
768 element starts with a "/". */
|
|
|
769
|
|
|
770 /* "//" anywhere isn't necessarily hairy; we just start afresh
|
|
|
771 with the second slash. */
|
|
|
772 if (IS_DIRECTORY_SEP (p[0]) && IS_DIRECTORY_SEP (p[1])
|
|
|
773 #if defined (APOLLO) || defined (WINDOWSNT)
|
|
151
|
774 /* // at start of filename is meaningful on Apollo
|
|
0
|
775 and WindowsNT systems */
|
|
|
776 && nm != p
|
|
|
777 #endif /* APOLLO || WINDOWSNT */
|
|
|
778 )
|
|
|
779 nm = p + 1;
|
|
|
780
|
|
|
781 /* "~" is hairy as the start of any path element. */
|
|
|
782 if (IS_DIRECTORY_SEP (p[0]) && p[1] == '~')
|
|
|
783 nm = p + 1;
|
|
|
784
|
|
|
785 p++;
|
|
|
786 }
|
|
189
|
787 #endif
|
|
0
|
788
|
|
|
789 /* If nm is absolute, flush ...// and detect /./ and /../.
|
|
|
790 If no /./ or /../ we can return right away. */
|
|
209
|
791 if (IS_DIRECTORY_SEP (nm[0]))
|
|
0
|
792 {
|
|
|
793 /* If it turns out that the filename we want to return is just a
|
|
|
794 suffix of FILENAME, we don't need to go through and edit
|
|
|
795 things; we just need to construct a new string using data
|
|
|
796 starting at the middle of FILENAME. If we set lose to a
|
|
|
797 non-zero value, that means we've discovered that we can't do
|
|
|
798 that cool trick. */
|
|
|
799 int lose = 0;
|
|
|
800
|
|
|
801 p = nm;
|
|
|
802 while (*p)
|
|
|
803 {
|
|
|
804 /* Since we know the path is absolute, we can assume that each
|
|
|
805 element starts with a "/". */
|
|
|
806
|
|
|
807 /* "." and ".." are hairy. */
|
|
|
808 if (IS_DIRECTORY_SEP (p[0])
|
|
|
809 && p[1] == '.'
|
|
|
810 && (IS_DIRECTORY_SEP (p[2])
|
|
|
811 || p[2] == 0
|
|
|
812 || (p[2] == '.' && (IS_DIRECTORY_SEP (p[3])
|
|
|
813 || p[3] == 0))))
|
|
|
814 lose = 1;
|
|
|
815 p++;
|
|
|
816 }
|
|
|
817 if (!lose)
|
|
|
818 {
|
|
|
819 #ifndef DOS_NT
|
|
16
|
820 if (nm == XSTRING_DATA (name))
|
|
0
|
821 return name;
|
|
|
822 return build_string ((char *) nm);
|
|
|
823 #endif /* not DOS_NT */
|
|
|
824 }
|
|
|
825 }
|
|
|
826
|
|
|
827 /* Now determine directory to start with and put it in newdir */
|
|
|
828
|
|
|
829 newdir = 0;
|
|
|
830
|
|
|
831 if (nm[0] == '~') /* prefix ~ */
|
|
|
832 {
|
|
|
833 if (IS_DIRECTORY_SEP (nm[1])
|
|
|
834 || nm[1] == 0) /* ~ by itself */
|
|
|
835 {
|
|
|
836 if (!(newdir = (Bufbyte *) egetenv ("HOME")))
|
|
|
837 newdir = (Bufbyte *) "";
|
|
|
838 #ifdef DOS_NT
|
|
|
839 /* Problem when expanding "~\" if HOME is not on current drive.
|
|
|
840 Ulrich Leodolter, Wed Jan 11 10:20:35 1995 */
|
|
|
841 if (newdir[1] == ':')
|
|
|
842 drive = newdir[0];
|
|
|
843 dostounix_filename (newdir);
|
|
183
|
844 #endif /* DOS_NT */
|
|
0
|
845 nm++;
|
|
|
846 }
|
|
|
847 else /* ~user/filename */
|
|
|
848 {
|
|
209
|
849 for (p = nm; *p && (!IS_DIRECTORY_SEP (*p)); p++);
|
|
0
|
850 o = (Bufbyte *) alloca (p - nm + 1);
|
|
|
851 memcpy (o, (char *) nm, p - nm);
|
|
|
852 o [p - nm] = 0;
|
|
|
853
|
|
|
854 #ifdef WINDOWSNT
|
|
195
|
855 /*
|
|
|
856 ** Now if the file given is "~foo/file" and HOME="c:/", then we
|
|
|
857 ** want the file to be named "c:/file" ("~foo" becomes "c:/").
|
|
|
858 ** The variable o has "~foo", so we can use the length of
|
|
|
859 ** that string to offset nm. August Hill, 31 Aug 1998.
|
|
|
860 */
|
|
0
|
861 newdir = (unsigned char *) egetenv ("HOME");
|
|
|
862 dostounix_filename (newdir);
|
|
195
|
863 nm += strlen(o) + 1;
|
|
0
|
864 #else /* not WINDOWSNT */
|
|
|
865 /* Jamie reports that getpwnam() can get wedged by SIGIO/SIGALARM
|
|
|
866 occurring in it. (It can call select()). */
|
|
|
867 slow_down_interrupts ();
|
|
|
868 pw = (struct passwd *) getpwnam ((char *) o + 1);
|
|
|
869 speed_up_interrupts ();
|
|
|
870 if (pw)
|
|
|
871 {
|
|
|
872 newdir = (Bufbyte *) pw -> pw_dir;
|
|
|
873 nm = p;
|
|
|
874 }
|
|
|
875 #endif /* not WINDOWSNT */
|
|
|
876
|
|
|
877 /* If we don't find a user of that name, leave the name
|
|
|
878 unchanged; don't move nm forward to p. */
|
|
|
879 }
|
|
|
880 }
|
|
|
881
|
|
|
882 if (!IS_ANY_SEP (nm[0])
|
|
|
883 #ifdef DOS_NT
|
|
|
884 && drive == -1
|
|
|
885 #endif /* DOS_NT */
|
|
|
886 && !newdir
|
|
173
|
887 && STRINGP (default_))
|
|
0
|
888 {
|
|
173
|
889 newdir = XSTRING_DATA (default_);
|
|
0
|
890 }
|
|
|
891
|
|
|
892 #ifdef DOS_NT
|
|
|
893 if (newdir == 0 && relpath)
|
|
151
|
894 newdir = defdir;
|
|
0
|
895 #endif /* DOS_NT */
|
|
|
896 if (newdir != 0)
|
|
|
897 {
|
|
|
898 /* Get rid of any slash at the end of newdir. */
|
|
|
899 int length = strlen ((char *) newdir);
|
|
|
900 /* Adding `length > 1 &&' makes ~ expand into / when homedir
|
|
|
901 is the root dir. People disagree about whether that is right.
|
|
|
902 Anyway, we can't take the risk of this change now. */
|
|
|
903 #ifdef DOS_NT
|
|
|
904 if (newdir[1] != ':' && length > 1)
|
|
|
905 #endif
|
|
|
906 if (IS_DIRECTORY_SEP (newdir[length - 1]))
|
|
|
907 {
|
|
|
908 Bufbyte *temp = (Bufbyte *) alloca (length);
|
|
|
909 memcpy (temp, newdir, length - 1);
|
|
|
910 temp[length - 1] = 0;
|
|
|
911 newdir = temp;
|
|
|
912 }
|
|
|
913 tlen = length + 1;
|
|
|
914 }
|
|
|
915 else
|
|
|
916 tlen = 0;
|
|
|
917
|
|
|
918 /* Now concatenate the directory and name to new space in the stack frame */
|
|
|
919 tlen += strlen ((char *) nm) + 1;
|
|
|
920 #ifdef DOS_NT
|
|
151
|
921 /* Add reserved space for drive name. (The Microsoft x86 compiler
|
|
0
|
922 produces incorrect code if the following two lines are combined.) */
|
|
|
923 target = (Bufbyte *) alloca (tlen + 2);
|
|
|
924 target += 2;
|
|
|
925 #else /* not DOS_NT */
|
|
|
926 target = (Bufbyte *) alloca (tlen);
|
|
|
927 #endif /* not DOS_NT */
|
|
|
928 *target = 0;
|
|
|
929
|
|
|
930 if (newdir)
|
|
|
931 {
|
|
|
932 if (nm[0] == 0 || IS_DIRECTORY_SEP (nm[0]))
|
|
|
933 strcpy ((char *) target, (char *) newdir);
|
|
|
934 else
|
|
|
935 file_name_as_directory ((char *) target, (char *) newdir);
|
|
|
936 }
|
|
|
937
|
|
|
938 strcat ((char *) target, (char *) nm);
|
|
|
939
|
|
|
940 /* Now canonicalize by removing /. and /foo/.. if they appear. */
|
|
|
941
|
|
|
942 p = target;
|
|
|
943 o = target;
|
|
|
944
|
|
|
945 while (*p)
|
|
|
946 {
|
|
|
947 if (!IS_DIRECTORY_SEP (*p))
|
|
|
948 {
|
|
|
949 *o++ = *p++;
|
|
|
950 }
|
|
|
951 else if (IS_DIRECTORY_SEP (p[0]) && IS_DIRECTORY_SEP (p[1])
|
|
|
952 #if defined (APOLLO) || defined (WINDOWSNT)
|
|
151
|
953 /* // at start of filename is meaningful in Apollo
|
|
0
|
954 and WindowsNT systems */
|
|
|
955 && o != target
|
|
|
956 #endif /* APOLLO */
|
|
|
957 )
|
|
|
958 {
|
|
|
959 o = target;
|
|
|
960 p++;
|
|
|
961 }
|
|
|
962 else if (IS_DIRECTORY_SEP (p[0])
|
|
|
963 && p[1] == '.'
|
|
|
964 && (IS_DIRECTORY_SEP (p[2])
|
|
|
965 || p[2] == 0))
|
|
|
966 {
|
|
|
967 /* If "/." is the entire filename, keep the "/". Otherwise,
|
|
|
968 just delete the whole "/.". */
|
|
|
969 if (o == target && p[2] == '\0')
|
|
|
970 *o++ = *p;
|
|
|
971 p += 2;
|
|
|
972 }
|
|
|
973 else if (IS_DIRECTORY_SEP (p[0]) && p[1] == '.' && p[2] == '.'
|
|
|
974 /* `/../' is the "superroot" on certain file systems. */
|
|
|
975 && o != target
|
|
|
976 && (IS_DIRECTORY_SEP (p[3]) || p[3] == 0))
|
|
|
977 {
|
|
|
978 while (o != target && (--o) && !IS_DIRECTORY_SEP (*o))
|
|
|
979 ;
|
|
|
980 #if defined (APOLLO) || defined (WINDOWSNT)
|
|
151
|
981 if (o == target + 1
|
|
0
|
982 && IS_DIRECTORY_SEP (o[-1]) && IS_DIRECTORY_SEP (o[0]))
|
|
|
983 ++o;
|
|
|
984 else
|
|
|
985 #endif /* APOLLO || WINDOWSNT */
|
|
|
986 if (o == target && IS_ANY_SEP (*o))
|
|
|
987 ++o;
|
|
|
988 p += 3;
|
|
|
989 }
|
|
|
990 else
|
|
|
991 {
|
|
|
992 *o++ = *p++;
|
|
|
993 }
|
|
|
994 }
|
|
|
995
|
|
|
996 #ifdef DOS_NT
|
|
|
997 /* at last, set drive name. */
|
|
|
998 if (target[1] != ':'
|
|
|
999 #ifdef WINDOWSNT
|
|
|
1000 /* Allow network paths that look like "\\foo" */
|
|
|
1001 && !(IS_DIRECTORY_SEP (target[0]) && IS_DIRECTORY_SEP (target[1]))
|
|
|
1002 #endif /* WINDOWSNT */
|
|
|
1003 )
|
|
|
1004 {
|
|
|
1005 target -= 2;
|
|
|
1006 target[0] = (drive < 0 ? getdisk () + 'A' : drive);
|
|
|
1007 target[1] = ':';
|
|
|
1008 }
|
|
|
1009 #endif /* DOS_NT */
|
|
|
1010
|
|
|
1011 return make_string (target, o - target);
|
|
|
1012 }
|
|
|
1013
|
|
|
1014 #if 0 /* FSFmacs */
|
|
|
1015 another older version of expand-file-name;
|
|
|
1016 #endif
|
|
|
1017
|
|
20
|
1018 DEFUN ("file-truename", Ffile_truename, 1, 2, 0, /*
|
|
0
|
1019 Return the canonical name of the given FILE.
|
|
|
1020 Second arg DEFAULT is directory to start with if FILE is relative
|
|
|
1021 (does not start with slash); if DEFAULT is nil or missing,
|
|
|
1022 the current buffer's value of default-directory is used.
|
|
|
1023 No component of the resulting pathname will be a symbolic link, as
|
|
|
1024 in the realpath() function.
|
|
20
|
1025 */
|
|
173
|
1026 (filename, default_))
|
|
0
|
1027 {
|
|
120
|
1028 /* This function can GC. GC checked 1997.04.06. */
|
|
0
|
1029 Lisp_Object expanded_name;
|
|
|
1030 Lisp_Object handler;
|
|
120
|
1031 struct gcpro gcpro1;
|
|
0
|
1032
|
|
|
1033 CHECK_STRING (filename);
|
|
|
1034
|
|
173
|
1035 expanded_name = Fexpand_file_name (filename, default_);
|
|
0
|
1036
|
|
|
1037 if (!STRINGP (expanded_name))
|
|
|
1038 return Qnil;
|
|
|
1039
|
|
|
1040 GCPRO1 (expanded_name);
|
|
|
1041 handler = Ffind_file_name_handler (expanded_name, Qfile_truename);
|
|
|
1042 UNGCPRO;
|
|
|
1043
|
|
|
1044 if (!NILP (handler))
|
|
173
|
1045 return call2_check_string (handler, Qfile_truename, expanded_name);
|
|
0
|
1046
|
|
|
1047 {
|
|
|
1048 char resolved_path[MAXPATHLEN];
|
|
|
1049 char path[MAXPATHLEN];
|
|
|
1050 char *p = path;
|
|
16
|
1051 int elen = XSTRING_LENGTH (expanded_name);
|
|
151
|
1052
|
|
0
|
1053 if (elen >= countof (path))
|
|
|
1054 goto toolong;
|
|
151
|
1055
|
|
16
|
1056 memcpy (path, XSTRING_DATA (expanded_name), elen + 1);
|
|
0
|
1057 /* memset (resolved_path, 0, sizeof (resolved_path)); */
|
|
|
1058
|
|
|
1059 /* Try doing it all at once. */
|
|
|
1060 /* !!#### Does realpath() Mule-encapsulate? */
|
|
|
1061 if (!realpath (path, resolved_path))
|
|
|
1062 {
|
|
|
1063 /* Didn't resolve it -- have to do it one component at a time. */
|
|
|
1064 /* "realpath" is a typically useless, stupid un*x piece of crap.
|
|
|
1065 It claims to return a useful value in the "error" case, but since
|
|
|
1066 there is no indication provided of how far along the pathname
|
|
|
1067 the function went before erring, there is no way to use the
|
|
|
1068 partial result returned. What a piece of junk. */
|
|
|
1069 for (;;)
|
|
|
1070 {
|
|
|
1071 p = (char *) memchr (p + 1, '/', elen - (p + 1 - path));
|
|
|
1072 if (p)
|
|
|
1073 *p = 0;
|
|
|
1074
|
|
|
1075 /* memset (resolved_path, 0, sizeof (resolved_path)); */
|
|
|
1076 if (realpath (path, resolved_path))
|
|
|
1077 {
|
|
|
1078 if (p)
|
|
|
1079 *p = '/';
|
|
|
1080 else
|
|
|
1081 break;
|
|
|
1082
|
|
|
1083 }
|
|
209
|
1084 else if (errno == ENOENT || errno == EACCES)
|
|
0
|
1085 {
|
|
|
1086 /* Failed on this component. Just tack on the rest of
|
|
|
1087 the string and we are done. */
|
|
|
1088 int rlen = strlen (resolved_path);
|
|
|
1089
|
|
|
1090 /* "On failure, it returns NULL, sets errno to indicate
|
|
|
1091 the error, and places in resolved_path the absolute pathname
|
|
|
1092 of the path component which could not be resolved." */
|
|
|
1093 if (p)
|
|
|
1094 {
|
|
|
1095 int plen = elen - (p - path);
|
|
151
|
1096
|
|
0
|
1097 if (rlen > 1 && resolved_path[rlen - 1] == '/')
|
|
|
1098 rlen = rlen - 1;
|
|
|
1099
|
|
|
1100 if (plen + rlen + 1 > countof (resolved_path))
|
|
|
1101 goto toolong;
|
|
|
1102
|
|
|
1103 resolved_path[rlen] = '/';
|
|
|
1104 memcpy (resolved_path + rlen + 1, p + 1, plen + 1 - 1);
|
|
|
1105 }
|
|
|
1106 break;
|
|
|
1107 }
|
|
|
1108 else
|
|
|
1109 goto lose;
|
|
|
1110 }
|
|
|
1111 }
|
|
|
1112
|
|
|
1113 {
|
|
|
1114 int rlen = strlen (resolved_path);
|
|
82
|
1115 if (elen > 0 && XSTRING_BYTE (expanded_name, elen - 1) == '/'
|
|
0
|
1116 && !(rlen > 0 && resolved_path[rlen - 1] == '/'))
|
|
|
1117 {
|
|
|
1118 if (rlen + 1 > countof (resolved_path))
|
|
|
1119 goto toolong;
|
|
|
1120 resolved_path[rlen] = '/';
|
|
|
1121 resolved_path[rlen + 1] = 0;
|
|
|
1122 rlen = rlen + 1;
|
|
|
1123 }
|
|
209
|
1124 return make_ext_string ((Bufbyte *) resolved_path, rlen, FORMAT_BINARY);
|
|
0
|
1125 }
|
|
|
1126
|
|
|
1127 toolong:
|
|
|
1128 errno = ENAMETOOLONG;
|
|
|
1129 goto lose;
|
|
|
1130 lose:
|
|
|
1131 report_file_error ("Finding truename", list1 (expanded_name));
|
|
|
1132 }
|
|
|
1133 return Qnil; /* suppress compiler warning */
|
|
|
1134 }
|
|
|
1135
|
|
|
1136
|
|
20
|
1137 DEFUN ("substitute-in-file-name", Fsubstitute_in_file_name, 1, 1, 0, /*
|
|
0
|
1138 Substitute environment variables referred to in FILENAME.
|
|
|
1139 `$FOO' where FOO is an environment variable name means to substitute
|
|
|
1140 the value of that variable. The variable name should be terminated
|
|
|
1141 with a character not a letter, digit or underscore; otherwise, enclose
|
|
|
1142 the entire variable name in braces.
|
|
|
1143 If `/~' appears, all of FILENAME through that `/' is discarded.
|
|
|
1144
|
|
20
|
1145 */
|
|
|
1146 (string))
|
|
0
|
1147 {
|
|
120
|
1148 /* This function can GC. GC checked 1997.04.06. */
|
|
0
|
1149 Bufbyte *nm;
|
|
|
1150
|
|
|
1151 Bufbyte *s, *p, *o, *x, *endp;
|
|
|
1152 Bufbyte *target = 0;
|
|
|
1153 int total = 0;
|
|
|
1154 int substituted = 0;
|
|
|
1155 Bufbyte *xnm;
|
|
|
1156 Lisp_Object handler;
|
|
|
1157
|
|
|
1158 CHECK_STRING (string);
|
|
|
1159
|
|
|
1160 /* If the file name has special constructs in it,
|
|
|
1161 call the corresponding file handler. */
|
|
|
1162 handler = Ffind_file_name_handler (string, Qsubstitute_in_file_name);
|
|
|
1163 if (!NILP (handler))
|
|
173
|
1164 return call2_check_string_or_nil (handler, Qsubstitute_in_file_name,
|
|
|
1165 string);
|
|
0
|
1166
|
|
16
|
1167 nm = XSTRING_DATA (string);
|
|
0
|
1168 #ifdef MSDOS
|
|
|
1169 dostounix_filename (nm = strcpy (alloca (strlen (nm) + 1), nm));
|
|
16
|
1170 substituted = !strcmp (nm, XSTRING_DATA (string));
|
|
0
|
1171 #endif
|
|
16
|
1172 endp = nm + XSTRING_LENGTH (string);
|
|
0
|
1173
|
|
|
1174 /* If /~ or // appears, discard everything through first slash. */
|
|
|
1175
|
|
|
1176 for (p = nm; p != endp; p++)
|
|
|
1177 {
|
|
|
1178 if ((p[0] == '~' ||
|
|
|
1179 #ifdef APOLLO
|
|
|
1180 /* // at start of file name is meaningful in Apollo system */
|
|
|
1181 (p[0] == '/' && p - 1 != nm)
|
|
|
1182 #else /* not APOLLO */
|
|
|
1183 #ifdef WINDOWSNT
|
|
|
1184 (IS_DIRECTORY_SEP (p[0]) && p - 1 != nm)
|
|
|
1185 #else /* not WINDOWSNT */
|
|
|
1186 p[0] == '/'
|
|
|
1187 #endif /* not WINDOWSNT */
|
|
|
1188 #endif /* not APOLLO */
|
|
|
1189 )
|
|
|
1190 && p != nm
|
|
209
|
1191 && (IS_DIRECTORY_SEP (p[-1])))
|
|
0
|
1192 {
|
|
|
1193 nm = p;
|
|
|
1194 substituted = 1;
|
|
|
1195 }
|
|
|
1196 #ifdef DOS_NT
|
|
|
1197 if (p[0] && p[1] == ':')
|
|
|
1198 {
|
|
|
1199 nm = p;
|
|
|
1200 substituted = 1;
|
|
|
1201 }
|
|
|
1202 #endif /* DOS_NT */
|
|
|
1203 }
|
|
|
1204
|
|
|
1205 /* See if any variables are substituted into the string
|
|
|
1206 and find the total length of their values in `total' */
|
|
|
1207
|
|
|
1208 for (p = nm; p != endp;)
|
|
|
1209 if (*p != '$')
|
|
|
1210 p++;
|
|
|
1211 else
|
|
|
1212 {
|
|
|
1213 p++;
|
|
|
1214 if (p == endp)
|
|
|
1215 goto badsubst;
|
|
|
1216 else if (*p == '$')
|
|
|
1217 {
|
|
|
1218 /* "$$" means a single "$" */
|
|
|
1219 p++;
|
|
|
1220 total -= 1;
|
|
|
1221 substituted = 1;
|
|
|
1222 continue;
|
|
|
1223 }
|
|
|
1224 else if (*p == '{')
|
|
|
1225 {
|
|
|
1226 o = ++p;
|
|
|
1227 while (p != endp && *p != '}') p++;
|
|
|
1228 if (*p != '}') goto missingclose;
|
|
|
1229 s = p;
|
|
|
1230 }
|
|
|
1231 else
|
|
|
1232 {
|
|
|
1233 o = p;
|
|
|
1234 while (p != endp && (isalnum (*p) || *p == '_')) p++;
|
|
|
1235 s = p;
|
|
|
1236 }
|
|
|
1237
|
|
|
1238 /* Copy out the variable name */
|
|
|
1239 target = (Bufbyte *) alloca (s - o + 1);
|
|
|
1240 strncpy ((char *) target, (char *) o, s - o);
|
|
|
1241 target[s - o] = 0;
|
|
|
1242 #ifdef DOS_NT
|
|
|
1243 strupr (target); /* $home == $HOME etc. */
|
|
|
1244 #endif /* DOS_NT */
|
|
|
1245
|
|
|
1246 /* Get variable value */
|
|
|
1247 o = (Bufbyte *) egetenv ((char *) target);
|
|
|
1248 if (!o) goto badvar;
|
|
|
1249 total += strlen ((char *) o);
|
|
|
1250 substituted = 1;
|
|
|
1251 }
|
|
|
1252
|
|
|
1253 if (!substituted)
|
|
|
1254 return string;
|
|
|
1255
|
|
|
1256 /* If substitution required, recopy the string and do it */
|
|
|
1257 /* Make space in stack frame for the new copy */
|
|
16
|
1258 xnm = (Bufbyte *) alloca (XSTRING_LENGTH (string) + total + 1);
|
|
0
|
1259 x = xnm;
|
|
|
1260
|
|
|
1261 /* Copy the rest of the name through, replacing $ constructs with values */
|
|
|
1262 for (p = nm; *p;)
|
|
|
1263 if (*p != '$')
|
|
|
1264 *x++ = *p++;
|
|
|
1265 else
|
|
|
1266 {
|
|
|
1267 p++;
|
|
|
1268 if (p == endp)
|
|
|
1269 goto badsubst;
|
|
|
1270 else if (*p == '$')
|
|
|
1271 {
|
|
|
1272 *x++ = *p++;
|
|
|
1273 continue;
|
|
|
1274 }
|
|
|
1275 else if (*p == '{')
|
|
|
1276 {
|
|
|
1277 o = ++p;
|
|
|
1278 while (p != endp && *p != '}') p++;
|
|
|
1279 if (*p != '}') goto missingclose;
|
|
|
1280 s = p++;
|
|
|
1281 }
|
|
|
1282 else
|
|
|
1283 {
|
|
|
1284 o = p;
|
|
|
1285 while (p != endp && (isalnum (*p) || *p == '_')) p++;
|
|
|
1286 s = p;
|
|
|
1287 }
|
|
|
1288
|
|
|
1289 /* Copy out the variable name */
|
|
|
1290 target = (Bufbyte *) alloca (s - o + 1);
|
|
|
1291 strncpy ((char *) target, (char *) o, s - o);
|
|
|
1292 target[s - o] = 0;
|
|
|
1293 #ifdef DOS_NT
|
|
|
1294 strupr (target); /* $home == $HOME etc. */
|
|
|
1295 #endif /* DOS_NT */
|
|
|
1296
|
|
|
1297 /* Get variable value */
|
|
|
1298 o = (Bufbyte *) egetenv ((char *) target);
|
|
|
1299 if (!o)
|
|
|
1300 goto badvar;
|
|
|
1301
|
|
|
1302 strcpy ((char *) x, (char *) o);
|
|
|
1303 x += strlen ((char *) o);
|
|
|
1304 }
|
|
|
1305
|
|
|
1306 *x = 0;
|
|
|
1307
|
|
|
1308 /* If /~ or // appears, discard everything through first slash. */
|
|
|
1309
|
|
|
1310 for (p = xnm; p != x; p++)
|
|
|
1311 if ((p[0] == '~'
|
|
|
1312 #ifdef APOLLO
|
|
|
1313 /* // at start of file name is meaningful in Apollo system */
|
|
|
1314 || (p[0] == '/' && p - 1 != xnm)
|
|
|
1315 #else /* not APOLLO */
|
|
|
1316 #ifdef WINDOWSNT
|
|
|
1317 || (IS_DIRECTORY_SEP (p[0]) && p - 1 != xnm)
|
|
|
1318 #else /* not WINDOWSNT */
|
|
|
1319 || p[0] == '/'
|
|
|
1320 #endif /* not WINDOWSNT */
|
|
|
1321 #endif /* not APOLLO */
|
|
|
1322 )
|
|
|
1323 /* don't do p[-1] if that would go off the beginning --jwz */
|
|
|
1324 && p != nm && p > xnm && IS_DIRECTORY_SEP (p[-1]))
|
|
|
1325 xnm = p;
|
|
|
1326 #ifdef DOS_NT
|
|
|
1327 else if (p[0] && p[1] == ':')
|
|
|
1328 xnm = p;
|
|
|
1329 #endif
|
|
|
1330
|
|
|
1331 return make_string (xnm, x - xnm);
|
|
|
1332
|
|
|
1333 badsubst:
|
|
|
1334 error ("Bad format environment-variable substitution");
|
|
|
1335 missingclose:
|
|
|
1336 error ("Missing \"}\" in environment-variable substitution");
|
|
|
1337 badvar:
|
|
|
1338 error ("Substituting nonexistent environment variable \"%s\"",
|
|
|
1339 target);
|
|
|
1340
|
|
|
1341 /* NOTREACHED */
|
|
|
1342 return Qnil; /* suppress compiler warning */
|
|
|
1343 }
|
|
|
1344
|
|
|
1345 /* (directory-file-name (expand-file-name FOO)) */
|
|
|
1346
|
|
|
1347 Lisp_Object
|
|
|
1348 expand_and_dir_to_file (Lisp_Object filename, Lisp_Object defdir)
|
|
|
1349 {
|
|
116
|
1350 /* This function can call lisp */
|
|
0
|
1351 Lisp_Object abspath;
|
|
|
1352 struct gcpro gcpro1;
|
|
|
1353
|
|
|
1354 abspath = Fexpand_file_name (filename, defdir);
|
|
116
|
1355 GCPRO1 (abspath);
|
|
0
|
1356 /* Remove final slash, if any (unless path is root).
|
|
|
1357 stat behaves differently depending! */
|
|
16
|
1358 if (XSTRING_LENGTH (abspath) > 1
|
|
82
|
1359 && IS_DIRECTORY_SEP (XSTRING_BYTE (abspath, XSTRING_LENGTH (abspath) - 1))
|
|
|
1360 && !IS_DEVICE_SEP (XSTRING_BYTE (abspath, XSTRING_LENGTH (abspath) - 2)))
|
|
0
|
1361 /* We cannot take shortcuts; they might be wrong for magic file names. */
|
|
|
1362 abspath = Fdirectory_file_name (abspath);
|
|
|
1363 UNGCPRO;
|
|
|
1364 return abspath;
|
|
|
1365 }
|
|
|
1366
|
|
|
1367 /* Signal an error if the file ABSNAME already exists.
|
|
|
1368 If INTERACTIVE is nonzero, ask the user whether to proceed,
|
|
|
1369 and bypass the error if the user says to go ahead.
|
|
|
1370 QUERYSTRING is a name for the action that is being considered
|
|
|
1371 to alter the file.
|
|
|
1372 *STATPTR is used to store the stat information if the file exists.
|
|
|
1373 If the file does not exist, STATPTR->st_mode is set to 0. */
|
|
|
1374
|
|
|
1375 static void
|
|
|
1376 barf_or_query_if_file_exists (Lisp_Object absname, CONST char *querystring,
|
|
|
1377 int interactive, struct stat *statptr)
|
|
|
1378 {
|
|
120
|
1379 /* This function can GC. GC checked 1997.04.06. */
|
|
0
|
1380 struct stat statbuf;
|
|
|
1381
|
|
|
1382 /* stat is a good way to tell whether the file exists,
|
|
|
1383 regardless of what access permissions it has. */
|
|
16
|
1384 if (stat ((char *) XSTRING_DATA (absname), &statbuf) >= 0)
|
|
0
|
1385 {
|
|
|
1386 Lisp_Object tem;
|
|
116
|
1387
|
|
0
|
1388 if (interactive)
|
|
116
|
1389 {
|
|
|
1390 Lisp_Object prompt;
|
|
|
1391 struct gcpro gcpro1;
|
|
|
1392
|
|
|
1393 prompt = emacs_doprnt_string_c
|
|
0
|
1394 ((CONST Bufbyte *) GETTEXT ("File %s already exists; %s anyway? "),
|
|
16
|
1395 Qnil, -1, XSTRING_DATA (absname),
|
|
116
|
1396 GETTEXT (querystring));
|
|
151
|
1397
|
|
116
|
1398 GCPRO1 (prompt);
|
|
|
1399 tem = call1 (Qyes_or_no_p, prompt);
|
|
|
1400 UNGCPRO;
|
|
|
1401 }
|
|
0
|
1402 else
|
|
|
1403 tem = Qnil;
|
|
116
|
1404
|
|
0
|
1405 if (NILP (tem))
|
|
|
1406 Fsignal (Qfile_already_exists,
|
|
|
1407 list2 (build_translated_string ("File already exists"),
|
|
|
1408 absname));
|
|
|
1409 if (statptr)
|
|
|
1410 *statptr = statbuf;
|
|
|
1411 }
|
|
|
1412 else
|
|
|
1413 {
|
|
|
1414 if (statptr)
|
|
|
1415 statptr->st_mode = 0;
|
|
|
1416 }
|
|
|
1417 return;
|
|
|
1418 }
|
|
|
1419
|
|
20
|
1420 DEFUN ("copy-file", Fcopy_file, 2, 4,
|
|
|
1421 "fCopy file: \nFCopy %s to file: \np\nP", /*
|
|
0
|
1422 Copy FILE to NEWNAME. Both args must be strings.
|
|
|
1423 Signals a `file-already-exists' error if file NEWNAME already exists,
|
|
|
1424 unless a third argument OK-IF-ALREADY-EXISTS is supplied and non-nil.
|
|
|
1425 A number as third arg means request confirmation if NEWNAME already exists.
|
|
|
1426 This is what happens in interactive use with M-x.
|
|
|
1427 Fourth arg KEEP-TIME non-nil means give the new file the same
|
|
|
1428 last-modified time as the old one. (This works on only some systems.)
|
|
|
1429 A prefix arg makes KEEP-TIME non-nil.
|
|
20
|
1430 */
|
|
74
|
1431 (filename, newname, ok_if_already_exists, keep_time))
|
|
0
|
1432 {
|
|
120
|
1433 /* This function can GC. GC checked 1997.04.06. */
|
|
0
|
1434 int ifd, ofd, n;
|
|
|
1435 char buf[16 * 1024];
|
|
|
1436 struct stat st, out_st;
|
|
|
1437 Lisp_Object handler;
|
|
|
1438 int speccount = specpdl_depth ();
|
|
|
1439 struct gcpro gcpro1, gcpro2;
|
|
|
1440 /* Lisp_Object args[6]; */
|
|
|
1441 int input_file_statable_p;
|
|
|
1442
|
|
|
1443 GCPRO2 (filename, newname);
|
|
|
1444 CHECK_STRING (filename);
|
|
|
1445 CHECK_STRING (newname);
|
|
|
1446 filename = Fexpand_file_name (filename, Qnil);
|
|
|
1447 newname = Fexpand_file_name (newname, Qnil);
|
|
|
1448
|
|
|
1449 /* If the input file name has special constructs in it,
|
|
|
1450 call the corresponding file handler. */
|
|
|
1451 handler = Ffind_file_name_handler (filename, Qcopy_file);
|
|
|
1452 /* Likewise for output file name. */
|
|
|
1453 if (NILP (handler))
|
|
|
1454 handler = Ffind_file_name_handler (newname, Qcopy_file);
|
|
|
1455 if (!NILP (handler))
|
|
|
1456 {
|
|
|
1457 UNGCPRO;
|
|
|
1458 return call5 (handler, Qcopy_file, filename, newname,
|
|
74
|
1459 ok_if_already_exists, keep_time);
|
|
0
|
1460 }
|
|
|
1461
|
|
|
1462 /* When second argument is a directory, copy the file into it.
|
|
|
1463 (copy-file "foo" "bar/") == (copy-file "foo" "bar/foo")
|
|
|
1464 */
|
|
|
1465 if (!NILP (Ffile_directory_p (newname)))
|
|
|
1466 {
|
|
|
1467 Lisp_Object args[3];
|
|
|
1468 struct gcpro ngcpro1;
|
|
|
1469 int i = 1;
|
|
|
1470
|
|
151
|
1471 args[0] = newname;
|
|
0
|
1472 args[1] = Qnil; args[2] = Qnil;
|
|
151
|
1473 NGCPRO1 (*args);
|
|
0
|
1474 ngcpro1.nvars = 3;
|
|
82
|
1475 if (XSTRING_BYTE (newname, XSTRING_LENGTH (newname) - 1) != '/')
|
|
0
|
1476 args[i++] = build_string ("/");
|
|
|
1477 args[i++] = Ffile_name_nondirectory (filename);
|
|
|
1478 newname = Fconcat (i, args);
|
|
|
1479 NUNGCPRO;
|
|
|
1480 }
|
|
|
1481
|
|
|
1482 if (NILP (ok_if_already_exists)
|
|
|
1483 || INTP (ok_if_already_exists))
|
|
|
1484 barf_or_query_if_file_exists (newname, "copy to it",
|
|
|
1485 INTP (ok_if_already_exists), &out_st);
|
|
16
|
1486 else if (stat ((CONST char *) XSTRING_DATA (newname), &out_st) < 0)
|
|
0
|
1487 out_st.st_mode = 0;
|
|
|
1488
|
|
16
|
1489 ifd = open ((char *) XSTRING_DATA (filename), O_RDONLY, 0);
|
|
0
|
1490 if (ifd < 0)
|
|
|
1491 report_file_error ("Opening input file", Fcons (filename, Qnil));
|
|
|
1492
|
|
|
1493 record_unwind_protect (close_file_unwind, make_int (ifd));
|
|
|
1494
|
|
|
1495 /* We can only copy regular files and symbolic links. Other files are not
|
|
|
1496 copyable by us. */
|
|
|
1497 input_file_statable_p = (fstat (ifd, &st) >= 0);
|
|
|
1498
|
|
|
1499 #ifndef DOS_NT
|
|
|
1500 if (out_st.st_mode != 0
|
|
|
1501 && st.st_dev == out_st.st_dev && st.st_ino == out_st.st_ino)
|
|
|
1502 {
|
|
|
1503 errno = 0;
|
|
|
1504 report_file_error ("Input and output files are the same",
|
|
|
1505 Fcons (filename, Fcons (newname, Qnil)));
|
|
|
1506 }
|
|
|
1507 #endif
|
|
|
1508
|
|
|
1509 #if defined (S_ISREG) && defined (S_ISLNK)
|
|
|
1510 if (input_file_statable_p)
|
|
|
1511 {
|
|
|
1512 if (!(S_ISREG (st.st_mode))
|
|
|
1513 /* XEmacs: have to allow S_ISCHR in order to copy /dev/null */
|
|
|
1514 #ifdef S_ISCHR
|
|
|
1515 && !(S_ISCHR (st.st_mode))
|
|
|
1516 #endif
|
|
|
1517 && !(S_ISLNK (st.st_mode)))
|
|
|
1518 {
|
|
|
1519 #if defined (EISDIR)
|
|
|
1520 /* Get a better looking error message. */
|
|
|
1521 errno = EISDIR;
|
|
|
1522 #endif /* EISDIR */
|
|
|
1523 report_file_error ("Non-regular file", Fcons (filename, Qnil));
|
|
|
1524 }
|
|
|
1525 }
|
|
|
1526 #endif /* S_ISREG && S_ISLNK */
|
|
|
1527
|
|
|
1528 #ifdef MSDOS
|
|
|
1529 /* System's default file type was set to binary by _fmode in emacs.c. */
|
|
16
|
1530 ofd = creat ((char *) XSTRING_DATA (newname), S_IREAD | S_IWRITE);
|
|
0
|
1531 #else /* not MSDOS */
|
|
16
|
1532 ofd = creat ((char *) XSTRING_DATA (newname), 0666);
|
|
0
|
1533 #endif /* not MSDOS */
|
|
|
1534 if (ofd < 0)
|
|
|
1535 report_file_error ("Opening output file", list1 (newname));
|
|
|
1536
|
|
|
1537 {
|
|
|
1538 Lisp_Object ofd_locative = noseeum_cons (make_int (ofd), Qnil);
|
|
|
1539
|
|
|
1540 record_unwind_protect (close_file_unwind, ofd_locative);
|
|
|
1541
|
|
|
1542 while ((n = read_allowing_quit (ifd, buf, sizeof (buf))) > 0)
|
|
|
1543 {
|
|
|
1544 if (write_allowing_quit (ofd, buf, n) != n)
|
|
|
1545 report_file_error ("I/O error", list1 (newname));
|
|
|
1546 }
|
|
|
1547
|
|
|
1548 /* Closing the output clobbers the file times on some systems. */
|
|
|
1549 if (close (ofd) < 0)
|
|
|
1550 report_file_error ("I/O error", Fcons (newname, Qnil));
|
|
|
1551
|
|
|
1552 if (input_file_statable_p)
|
|
|
1553 {
|
|
74
|
1554 if (!NILP (keep_time))
|
|
0
|
1555 {
|
|
|
1556 EMACS_TIME atime, mtime;
|
|
|
1557 EMACS_SET_SECS_USECS (atime, st.st_atime, 0);
|
|
|
1558 EMACS_SET_SECS_USECS (mtime, st.st_mtime, 0);
|
|
16
|
1559 if (set_file_times ((char *) XSTRING_DATA (newname), atime,
|
|
0
|
1560 mtime))
|
|
|
1561 report_file_error ("I/O error", Fcons (newname, Qnil));
|
|
|
1562 }
|
|
|
1563 #ifndef MSDOS
|
|
16
|
1564 chmod ((CONST char *) XSTRING_DATA (newname),
|
|
0
|
1565 st.st_mode & 07777);
|
|
|
1566 #else /* MSDOS */
|
|
|
1567 #if defined (__DJGPP__) && __DJGPP__ > 1
|
|
|
1568 /* In DJGPP v2.0 and later, fstat usually returns true file mode bits,
|
|
|
1569 and if it can't, it tells so. Otherwise, under MSDOS we usually
|
|
|
1570 get only the READ bit, which will make the copied file read-only,
|
|
|
1571 so it's better not to chmod at all. */
|
|
|
1572 if ((_djstat_flags & _STFAIL_WRITEBIT) == 0)
|
|
16
|
1573 chmod ((char *) XSTRING_DATA (newname), st.st_mode & 07777);
|
|
0
|
1574 #endif /* DJGPP version 2 or newer */
|
|
|
1575 #endif /* MSDOS */
|
|
|
1576 }
|
|
|
1577
|
|
|
1578 /* We'll close it by hand */
|
|
|
1579 XCAR (ofd_locative) = Qnil;
|
|
|
1580
|
|
|
1581 /* Close ifd */
|
|
|
1582 unbind_to (speccount, Qnil);
|
|
|
1583 }
|
|
|
1584
|
|
|
1585 UNGCPRO;
|
|
|
1586 return Qnil;
|
|
|
1587 }
|
|
|
1588
|
|
20
|
1589 DEFUN ("make-directory-internal", Fmake_directory_internal, 1, 1, 0, /*
|
|
0
|
1590 Create a directory. One argument, a file name string.
|
|
20
|
1591 */
|
|
173
|
1592 (dirname_))
|
|
0
|
1593 {
|
|
120
|
1594 /* This function can GC. GC checked 1997.04.06. */
|
|
0
|
1595 char dir [MAXPATHLEN];
|
|
|
1596 Lisp_Object handler;
|
|
|
1597 struct gcpro gcpro1;
|
|
151
|
1598
|
|
173
|
1599 CHECK_STRING (dirname_);
|
|
|
1600 dirname_ = Fexpand_file_name (dirname_, Qnil);
|
|
|
1601
|
|
|
1602 GCPRO1 (dirname_);
|
|
|
1603 handler = Ffind_file_name_handler (dirname_, Qmake_directory_internal);
|
|
0
|
1604 UNGCPRO;
|
|
|
1605 if (!NILP (handler))
|
|
173
|
1606 return (call2 (handler, Qmake_directory_internal, dirname_));
|
|
|
1607
|
|
|
1608 if (XSTRING_LENGTH (dirname_) > (sizeof (dir) - 1))
|
|
0
|
1609 {
|
|
|
1610 return Fsignal (Qfile_error,
|
|
|
1611 list3 (build_translated_string ("Creating directory"),
|
|
|
1612 build_translated_string ("pathame too long"),
|
|
173
|
1613 dirname_));
|
|
0
|
1614 }
|
|
173
|
1615 strncpy (dir, (char *) XSTRING_DATA (dirname_),
|
|
|
1616 XSTRING_LENGTH (dirname_) + 1);
|
|
0
|
1617
|
|
173
|
1618 if (dir [XSTRING_LENGTH (dirname_) - 1] == '/')
|
|
|
1619 dir [XSTRING_LENGTH (dirname_) - 1] = 0;
|
|
0
|
1620
|
|
|
1621 #ifdef WINDOWSNT
|
|
|
1622 if (mkdir (dir) != 0)
|
|
|
1623 #else
|
|
|
1624 if (mkdir (dir, 0777) != 0)
|
|
|
1625 #endif
|
|
173
|
1626 report_file_error ("Creating directory", list1 (dirname_));
|
|
0
|
1627
|
|
|
1628 return Qnil;
|
|
|
1629 }
|
|
|
1630
|
|
20
|
1631 DEFUN ("delete-directory", Fdelete_directory, 1, 1, "FDelete directory: ", /*
|
|
0
|
1632 Delete a directory. One argument, a file name or directory name string.
|
|
20
|
1633 */
|
|
173
|
1634 (dirname_))
|
|
0
|
1635 {
|
|
120
|
1636 /* This function can GC. GC checked 1997.04.06. */
|
|
0
|
1637 Lisp_Object handler;
|
|
|
1638 struct gcpro gcpro1;
|
|
151
|
1639
|
|
173
|
1640 CHECK_STRING (dirname_);
|
|
|
1641
|
|
|
1642 GCPRO1 (dirname_);
|
|
|
1643 dirname_ = Fexpand_file_name (dirname_, Qnil);
|
|
|
1644 dirname_ = Fdirectory_file_name (dirname_);
|
|
|
1645
|
|
|
1646 handler = Ffind_file_name_handler (dirname_, Qdelete_directory);
|
|
0
|
1647 UNGCPRO;
|
|
|
1648 if (!NILP (handler))
|
|
173
|
1649 return (call2 (handler, Qdelete_directory, dirname_));
|
|
|
1650
|
|
|
1651 if (rmdir ((char *) XSTRING_DATA (dirname_)) != 0)
|
|
|
1652 report_file_error ("Removing directory", list1 (dirname_));
|
|
0
|
1653
|
|
|
1654 return Qnil;
|
|
|
1655 }
|
|
|
1656
|
|
20
|
1657 DEFUN ("delete-file", Fdelete_file, 1, 1, "fDelete file: ", /*
|
|
0
|
1658 Delete specified file. One argument, a file name string.
|
|
|
1659 If file has multiple names, it continues to exist with the other names.
|
|
20
|
1660 */
|
|
|
1661 (filename))
|
|
0
|
1662 {
|
|
120
|
1663 /* This function can GC. GC checked 1997.04.06. */
|
|
0
|
1664 Lisp_Object handler;
|
|
|
1665 struct gcpro gcpro1;
|
|
151
|
1666
|
|
0
|
1667 CHECK_STRING (filename);
|
|
|
1668 filename = Fexpand_file_name (filename, Qnil);
|
|
|
1669
|
|
114
|
1670 GCPRO1 (filename);
|
|
0
|
1671 handler = Ffind_file_name_handler (filename, Qdelete_file);
|
|
|
1672 UNGCPRO;
|
|
|
1673 if (!NILP (handler))
|
|
|
1674 return call2 (handler, Qdelete_file, filename);
|
|
|
1675
|
|
16
|
1676 if (0 > unlink ((char *) XSTRING_DATA (filename)))
|
|
0
|
1677 report_file_error ("Removing old name", list1 (filename));
|
|
|
1678 return Qnil;
|
|
|
1679 }
|
|
|
1680
|
|
|
1681 static Lisp_Object
|
|
|
1682 internal_delete_file_1 (Lisp_Object ignore, Lisp_Object ignore2)
|
|
|
1683 {
|
|
|
1684 return Qt;
|
|
|
1685 }
|
|
|
1686
|
|
|
1687 /* Delete file FILENAME, returning 1 if successful and 0 if failed. */
|
|
|
1688
|
|
|
1689 int
|
|
|
1690 internal_delete_file (Lisp_Object filename)
|
|
|
1691 {
|
|
120
|
1692 /* This function can GC. GC checked 1997.04.06. */
|
|
0
|
1693 return NILP (condition_case_1 (Qt, Fdelete_file, filename,
|
|
|
1694 internal_delete_file_1, Qnil));
|
|
|
1695 }
|
|
|
1696
|
|
20
|
1697 DEFUN ("rename-file", Frename_file, 2, 3,
|
|
|
1698 "fRename file: \nFRename %s to file: \np", /*
|
|
0
|
1699 Rename FILE as NEWNAME. Both args strings.
|
|
|
1700 If file has names other than FILE, it continues to have those names.
|
|
|
1701 Signals a `file-already-exists' error if a file NEWNAME already exists
|
|
|
1702 unless optional third argument OK-IF-ALREADY-EXISTS is non-nil.
|
|
|
1703 A number as third arg means request confirmation if NEWNAME already exists.
|
|
|
1704 This is what happens in interactive use with M-x.
|
|
20
|
1705 */
|
|
|
1706 (filename, newname, ok_if_already_exists))
|
|
0
|
1707 {
|
|
120
|
1708 /* This function can GC. GC checked 1997.04.06. */
|
|
0
|
1709 Lisp_Object handler;
|
|
|
1710 struct gcpro gcpro1, gcpro2;
|
|
|
1711
|
|
|
1712 GCPRO2 (filename, newname);
|
|
|
1713 CHECK_STRING (filename);
|
|
|
1714 CHECK_STRING (newname);
|
|
|
1715 filename = Fexpand_file_name (filename, Qnil);
|
|
|
1716 newname = Fexpand_file_name (newname, Qnil);
|
|
|
1717
|
|
|
1718 /* If the file name has special constructs in it,
|
|
|
1719 call the corresponding file handler. */
|
|
|
1720 handler = Ffind_file_name_handler (filename, Qrename_file);
|
|
|
1721 if (NILP (handler))
|
|
|
1722 handler = Ffind_file_name_handler (newname, Qrename_file);
|
|
|
1723 if (!NILP (handler))
|
|
|
1724 {
|
|
|
1725 UNGCPRO;
|
|
|
1726 return call4 (handler, Qrename_file,
|
|
|
1727 filename, newname, ok_if_already_exists);
|
|
|
1728 }
|
|
|
1729
|
|
|
1730 /* When second argument is a directory, rename the file into it.
|
|
|
1731 (rename-file "foo" "bar/") == (rename-file "foo" "bar/foo")
|
|
|
1732 */
|
|
|
1733 if (!NILP (Ffile_directory_p (newname)))
|
|
|
1734 {
|
|
|
1735 Lisp_Object args[3];
|
|
|
1736 struct gcpro ngcpro1;
|
|
|
1737 int i = 1;
|
|
|
1738
|
|
151
|
1739 args[0] = newname;
|
|
0
|
1740 args[1] = Qnil; args[2] = Qnil;
|
|
151
|
1741 NGCPRO1 (*args);
|
|
0
|
1742 ngcpro1.nvars = 3;
|
|
16
|
1743 if (XSTRING_BYTE (newname, XSTRING_LENGTH (newname) - 1) != '/')
|
|
0
|
1744 args[i++] = build_string ("/");
|
|
|
1745 args[i++] = Ffile_name_nondirectory (filename);
|
|
|
1746 newname = Fconcat (i, args);
|
|
|
1747 NUNGCPRO;
|
|
|
1748 }
|
|
|
1749
|
|
|
1750 if (NILP (ok_if_already_exists)
|
|
|
1751 || INTP (ok_if_already_exists))
|
|
|
1752 barf_or_query_if_file_exists (newname, "rename to it",
|
|
|
1753 INTP (ok_if_already_exists), 0);
|
|
|
1754
|
|
|
1755 #ifdef WINDOWSNT
|
|
100
|
1756 if (!MoveFile (XSTRING (filename)->_data, XSTRING (newname)->_data))
|
|
0
|
1757 #else /* not WINDOWSNT */
|
|
|
1758 /* FSFmacs only calls rename() here under BSD 4.1, and calls
|
|
|
1759 link() and unlink() otherwise, but that's bogus. Sometimes
|
|
|
1760 rename() succeeds where link()/unlink() fail, and we have
|
|
|
1761 configure check for rename() and emulate using link()/unlink()
|
|
|
1762 if necessary. */
|
|
16
|
1763 if (0 > rename ((char *) XSTRING_DATA (filename),
|
|
|
1764 (char *) XSTRING_DATA (newname)))
|
|
0
|
1765 #endif /* not WINDOWSNT */
|
|
|
1766 {
|
|
|
1767 #ifdef WINDOWSNT
|
|
|
1768 /* Why two? And why doesn't MS document what MoveFile will return? */
|
|
|
1769 if (GetLastError () == ERROR_FILE_EXISTS
|
|
|
1770 || GetLastError () == ERROR_ALREADY_EXISTS)
|
|
|
1771 #else /* not WINDOWSNT */
|
|
|
1772 if (errno == EXDEV)
|
|
|
1773 #endif /* not WINDOWSNT */
|
|
|
1774 {
|
|
|
1775 Fcopy_file (filename, newname,
|
|
|
1776 /* We have already prompted if it was an integer,
|
|
|
1777 so don't have copy-file prompt again. */
|
|
|
1778 ((NILP (ok_if_already_exists)) ? Qnil : Qt),
|
|
|
1779 Qt);
|
|
|
1780 Fdelete_file (filename);
|
|
|
1781 }
|
|
|
1782 else
|
|
|
1783 {
|
|
|
1784 report_file_error ("Renaming", list2 (filename, newname));
|
|
|
1785 }
|
|
|
1786 }
|
|
|
1787 UNGCPRO;
|
|
|
1788 return Qnil;
|
|
|
1789 }
|
|
|
1790
|
|
20
|
1791 DEFUN ("add-name-to-file", Fadd_name_to_file, 2, 3,
|
|
|
1792 "fAdd name to file: \nFName to add to %s: \np", /*
|
|
0
|
1793 Give FILE additional name NEWNAME. Both args strings.
|
|
|
1794 Signals a `file-already-exists' error if a file NEWNAME already exists
|
|
|
1795 unless optional third argument OK-IF-ALREADY-EXISTS is non-nil.
|
|
|
1796 A number as third arg means request confirmation if NEWNAME already exists.
|
|
|
1797 This is what happens in interactive use with M-x.
|
|
20
|
1798 */
|
|
|
1799 (filename, newname, ok_if_already_exists))
|
|
0
|
1800 {
|
|
120
|
1801 /* This function can GC. GC checked 1997.04.06. */
|
|
0
|
1802 Lisp_Object handler;
|
|
|
1803 struct gcpro gcpro1, gcpro2;
|
|
|
1804
|
|
|
1805 GCPRO2 (filename, newname);
|
|
|
1806 CHECK_STRING (filename);
|
|
|
1807 CHECK_STRING (newname);
|
|
|
1808 filename = Fexpand_file_name (filename, Qnil);
|
|
|
1809 newname = Fexpand_file_name (newname, Qnil);
|
|
|
1810
|
|
|
1811 /* If the file name has special constructs in it,
|
|
|
1812 call the corresponding file handler. */
|
|
|
1813 handler = Ffind_file_name_handler (filename, Qadd_name_to_file);
|
|
|
1814 if (!NILP (handler))
|
|
|
1815 RETURN_UNGCPRO (call4 (handler, Qadd_name_to_file, filename,
|
|
|
1816 newname, ok_if_already_exists));
|
|
|
1817
|
|
|
1818 /* If the new name has special constructs in it,
|
|
|
1819 call the corresponding file handler. */
|
|
|
1820 handler = Ffind_file_name_handler (newname, Qadd_name_to_file);
|
|
|
1821 if (!NILP (handler))
|
|
|
1822 RETURN_UNGCPRO (call4 (handler, Qadd_name_to_file, filename,
|
|
|
1823 newname, ok_if_already_exists));
|
|
|
1824
|
|
|
1825 if (NILP (ok_if_already_exists)
|
|
|
1826 || INTP (ok_if_already_exists))
|
|
|
1827 barf_or_query_if_file_exists (newname, "make it a new name",
|
|
|
1828 INTP (ok_if_already_exists), 0);
|
|
|
1829 #ifdef WINDOWSNT
|
|
|
1830 /* Windows does not support this operation. */
|
|
|
1831 report_file_error ("Adding new name", Flist (2, &filename));
|
|
|
1832 #else /* not WINDOWSNT */
|
|
|
1833
|
|
16
|
1834 unlink ((char *) XSTRING_DATA (newname));
|
|
|
1835 if (0 > link ((char *) XSTRING_DATA (filename),
|
|
|
1836 (char *) XSTRING_DATA (newname)))
|
|
0
|
1837 {
|
|
|
1838 report_file_error ("Adding new name",
|
|
|
1839 list2 (filename, newname));
|
|
|
1840 }
|
|
|
1841 #endif /* not WINDOWSNT */
|
|
|
1842
|
|
|
1843 UNGCPRO;
|
|
|
1844 return Qnil;
|
|
|
1845 }
|
|
|
1846
|
|
|
1847 #ifdef S_IFLNK
|
|
20
|
1848 DEFUN ("make-symbolic-link", Fmake_symbolic_link, 2, 3,
|
|
|
1849 "FMake symbolic link to file: \nFMake symbolic link to file %s: \np", /*
|
|
0
|
1850 Make a symbolic link to FILENAME, named LINKNAME. Both args strings.
|
|
|
1851 Signals a `file-already-exists' error if a file LINKNAME already exists
|
|
|
1852 unless optional third argument OK-IF-ALREADY-EXISTS is non-nil.
|
|
|
1853 A number as third arg means request confirmation if LINKNAME already exists.
|
|
|
1854 This happens for interactive use with M-x.
|
|
20
|
1855 */
|
|
|
1856 (filename, linkname, ok_if_already_exists))
|
|
0
|
1857 {
|
|
120
|
1858 /* This function can GC. GC checked 1997.06.04. */
|
|
0
|
1859 Lisp_Object handler;
|
|
|
1860 struct gcpro gcpro1, gcpro2;
|
|
|
1861
|
|
|
1862 GCPRO2 (filename, linkname);
|
|
|
1863 CHECK_STRING (filename);
|
|
|
1864 CHECK_STRING (linkname);
|
|
|
1865 /* If the link target has a ~, we must expand it to get
|
|
|
1866 a truly valid file name. Otherwise, do not expand;
|
|
|
1867 we want to permit links to relative file names. */
|
|
82
|
1868 if (XSTRING_BYTE (filename, 0) == '~') /* #### Un*x-specific */
|
|
0
|
1869 filename = Fexpand_file_name (filename, Qnil);
|
|
|
1870 linkname = Fexpand_file_name (linkname, Qnil);
|
|
|
1871
|
|
|
1872 /* If the file name has special constructs in it,
|
|
|
1873 call the corresponding file handler. */
|
|
|
1874 handler = Ffind_file_name_handler (filename, Qmake_symbolic_link);
|
|
|
1875 if (!NILP (handler))
|
|
|
1876 RETURN_UNGCPRO (call4 (handler, Qmake_symbolic_link, filename, linkname,
|
|
|
1877 ok_if_already_exists));
|
|
|
1878
|
|
|
1879 /* If the new link name has special constructs in it,
|
|
|
1880 call the corresponding file handler. */
|
|
|
1881 handler = Ffind_file_name_handler (linkname, Qmake_symbolic_link);
|
|
|
1882 if (!NILP (handler))
|
|
|
1883 RETURN_UNGCPRO (call4 (handler, Qmake_symbolic_link, filename,
|
|
|
1884 linkname, ok_if_already_exists));
|
|
|
1885
|
|
|
1886 if (NILP (ok_if_already_exists)
|
|
|
1887 || INTP (ok_if_already_exists))
|
|
|
1888 barf_or_query_if_file_exists (linkname, "make it a link",
|
|
|
1889 INTP (ok_if_already_exists), 0);
|
|
|
1890
|
|
16
|
1891 unlink ((char *) XSTRING_DATA (linkname));
|
|
|
1892 if (0 > symlink ((char *) XSTRING_DATA (filename),
|
|
|
1893 (char *) XSTRING_DATA (linkname)))
|
|
0
|
1894 {
|
|
|
1895 report_file_error ("Making symbolic link",
|
|
|
1896 list2 (filename, linkname));
|
|
|
1897 }
|
|
|
1898 UNGCPRO;
|
|
|
1899 return Qnil;
|
|
|
1900 }
|
|
|
1901 #endif /* S_IFLNK */
|
|
|
1902
|
|
|
1903 #ifdef HPUX_NET
|
|
|
1904
|
|
20
|
1905 DEFUN ("sysnetunam", Fsysnetunam, 2, 2, 0, /*
|
|
0
|
1906 Open a network connection to PATH using LOGIN as the login string.
|
|
20
|
1907 */
|
|
|
1908 (path, login))
|
|
0
|
1909 {
|
|
|
1910 int netresult;
|
|
151
|
1911
|
|
0
|
1912 CHECK_STRING (path);
|
|
151
|
1913 CHECK_STRING (login);
|
|
0
|
1914
|
|
|
1915 /* netunam, being a strange-o system call only used once, is not
|
|
|
1916 encapsulated. */
|
|
|
1917 {
|
|
|
1918 char *path_ext;
|
|
|
1919 char *login_ext;
|
|
|
1920
|
|
|
1921 GET_C_STRING_FILENAME_DATA_ALLOCA (path, path_ext);
|
|
|
1922 GET_C_STRING_EXT_DATA_ALLOCA (login, FORMAT_OS, login_ext);
|
|
151
|
1923
|
|
0
|
1924 netresult = netunam (path_ext, login_ext);
|
|
|
1925 }
|
|
|
1926
|
|
|
1927 if (netresult == -1)
|
|
|
1928 return Qnil;
|
|
|
1929 else
|
|
|
1930 return Qt;
|
|
|
1931 }
|
|
|
1932 #endif /* HPUX_NET */
|
|
|
1933
|
|
20
|
1934 DEFUN ("file-name-absolute-p", Ffile_name_absolute_p, 1, 1, 0, /*
|
|
0
|
1935 Return t if file FILENAME specifies an absolute path name.
|
|
|
1936 On Unix, this is a name starting with a `/' or a `~'.
|
|
20
|
1937 */
|
|
|
1938 (filename))
|
|
0
|
1939 {
|
|
116
|
1940 /* This function does not GC */
|
|
0
|
1941 Bufbyte *ptr;
|
|
|
1942
|
|
|
1943 CHECK_STRING (filename);
|
|
16
|
1944 ptr = XSTRING_DATA (filename);
|
|
0
|
1945 if (IS_DIRECTORY_SEP (*ptr) || *ptr == '~'
|
|
|
1946 #ifdef DOS_NT
|
|
|
1947 || (*ptr != 0 && ptr[1] == ':' && (ptr[2] == '/' || ptr[2] == '\\'))
|
|
|
1948 #endif
|
|
|
1949 )
|
|
|
1950 return Qt;
|
|
|
1951 else
|
|
|
1952 return Qnil;
|
|
|
1953 }
|
|
|
1954
|
|
|
1955 /* Return nonzero if file FILENAME exists and can be executed. */
|
|
|
1956
|
|
|
1957 static int
|
|
|
1958 check_executable (char *filename)
|
|
|
1959 {
|
|
|
1960 #ifdef DOS_NT
|
|
|
1961 int len = strlen (filename);
|
|
|
1962 char *suffix;
|
|
|
1963 struct stat st;
|
|
|
1964 if (stat (filename, &st) < 0)
|
|
|
1965 return 0;
|
|
|
1966 return (S_ISREG (st.st_mode)
|
|
|
1967 && len >= 5
|
|
|
1968 && (stricmp ((suffix = filename + len-4), ".com") == 0
|
|
|
1969 || stricmp (suffix, ".exe") == 0
|
|
|
1970 || stricmp (suffix, ".bat") == 0)
|
|
|
1971 || (st.st_mode & S_IFMT) == S_IFDIR);
|
|
|
1972 #else /* not DOS_NT */
|
|
|
1973 #ifdef HAVE_EACCESS
|
|
183
|
1974 return eaccess (filename, 1) >= 0;
|
|
0
|
1975 #else
|
|
|
1976 /* Access isn't quite right because it uses the real uid
|
|
|
1977 and we really want to test with the effective uid.
|
|
|
1978 But Unix doesn't give us a right way to do it. */
|
|
183
|
1979 return access (filename, 1) >= 0;
|
|
|
1980 #endif /* HAVE_EACCESS */
|
|
0
|
1981 #endif /* not DOS_NT */
|
|
|
1982 }
|
|
|
1983
|
|
|
1984 /* Return nonzero if file FILENAME exists and can be written. */
|
|
|
1985
|
|
|
1986 static int
|
|
|
1987 check_writable (CONST char *filename)
|
|
|
1988 {
|
|
|
1989 #ifdef MSDOS
|
|
|
1990 struct stat st;
|
|
|
1991 if (stat (filename, &st) < 0)
|
|
|
1992 return 0;
|
|
|
1993 return (st.st_mode & S_IWRITE || (st.st_mode & S_IFMT) == S_IFDIR);
|
|
|
1994 #else /* not MSDOS */
|
|
|
1995 #ifdef HAVE_EACCESS
|
|
|
1996 return (eaccess (filename, 2) >= 0);
|
|
|
1997 #else
|
|
|
1998 /* Access isn't quite right because it uses the real uid
|
|
|
1999 and we really want to test with the effective uid.
|
|
|
2000 But Unix doesn't give us a right way to do it.
|
|
|
2001 Opening with O_WRONLY could work for an ordinary file,
|
|
|
2002 but would lose for directories. */
|
|
|
2003 return (access (filename, 2) >= 0);
|
|
|
2004 #endif
|
|
|
2005 #endif /* not MSDOS */
|
|
|
2006 }
|
|
|
2007
|
|
20
|
2008 DEFUN ("file-exists-p", Ffile_exists_p, 1, 1, 0, /*
|
|
0
|
2009 Return t if file FILENAME exists. (This does not mean you can read it.)
|
|
|
2010 See also `file-readable-p' and `file-attributes'.
|
|
20
|
2011 */
|
|
|
2012 (filename))
|
|
0
|
2013 {
|
|
116
|
2014 /* This function can call lisp */
|
|
0
|
2015 Lisp_Object abspath;
|
|
|
2016 Lisp_Object handler;
|
|
|
2017 struct stat statbuf;
|
|
|
2018 struct gcpro gcpro1;
|
|
151
|
2019
|
|
0
|
2020 CHECK_STRING (filename);
|
|
|
2021 abspath = Fexpand_file_name (filename, Qnil);
|
|
|
2022
|
|
|
2023 /* If the file name has special constructs in it,
|
|
|
2024 call the corresponding file handler. */
|
|
|
2025 GCPRO1 (abspath);
|
|
|
2026 handler = Ffind_file_name_handler (abspath, Qfile_exists_p);
|
|
|
2027 UNGCPRO;
|
|
|
2028 if (!NILP (handler))
|
|
|
2029 return call2 (handler, Qfile_exists_p, abspath);
|
|
|
2030
|
|
16
|
2031 if (stat ((char *) XSTRING_DATA (abspath), &statbuf) >= 0)
|
|
0
|
2032 return (Qt);
|
|
|
2033 else
|
|
|
2034 return (Qnil);
|
|
|
2035 }
|
|
|
2036
|
|
20
|
2037 DEFUN ("file-executable-p", Ffile_executable_p, 1, 1, 0, /*
|
|
0
|
2038 Return t if FILENAME can be executed by you.
|
|
|
2039 For a directory, this means you can access files in that directory.
|
|
20
|
2040 */
|
|
|
2041 (filename))
|
|
70
|
2042
|
|
0
|
2043 {
|
|
124
|
2044 /* This function can GC. GC checked 1997.04.10. */
|
|
0
|
2045 Lisp_Object abspath;
|
|
|
2046 Lisp_Object handler;
|
|
|
2047 struct gcpro gcpro1;
|
|
151
|
2048
|
|
0
|
2049 CHECK_STRING (filename);
|
|
|
2050 abspath = Fexpand_file_name (filename, Qnil);
|
|
|
2051
|
|
|
2052 /* If the file name has special constructs in it,
|
|
|
2053 call the corresponding file handler. */
|
|
|
2054 GCPRO1 (abspath);
|
|
|
2055 handler = Ffind_file_name_handler (abspath, Qfile_executable_p);
|
|
|
2056 UNGCPRO;
|
|
|
2057 if (!NILP (handler))
|
|
|
2058 return call2 (handler, Qfile_executable_p, abspath);
|
|
|
2059
|
|
16
|
2060 return (check_executable ((char *) XSTRING_DATA (abspath))
|
|
0
|
2061 ? Qt : Qnil);
|
|
|
2062 }
|
|
|
2063
|
|
20
|
2064 DEFUN ("file-readable-p", Ffile_readable_p, 1, 1, 0, /*
|
|
0
|
2065 Return t if file FILENAME exists and you can read it.
|
|
|
2066 See also `file-exists-p' and `file-attributes'.
|
|
20
|
2067 */
|
|
|
2068 (filename))
|
|
0
|
2069 {
|
|
124
|
2070 /* This function can GC. GC checked 1997.04.10. */
|
|
0
|
2071 Lisp_Object abspath;
|
|
|
2072 Lisp_Object handler;
|
|
|
2073 int desc;
|
|
|
2074 struct gcpro gcpro1;
|
|
151
|
2075
|
|
0
|
2076 CHECK_STRING (filename);
|
|
|
2077 abspath = Fexpand_file_name (filename, Qnil);
|
|
|
2078
|
|
|
2079 /* If the file name has special constructs in it,
|
|
|
2080 call the corresponding file handler. */
|
|
|
2081 GCPRO1 (abspath);
|
|
|
2082 handler = Ffind_file_name_handler (abspath, Qfile_readable_p);
|
|
|
2083 UNGCPRO;
|
|
|
2084 if (!NILP (handler))
|
|
|
2085 return call2 (handler, Qfile_readable_p, abspath);
|
|
|
2086
|
|
16
|
2087 desc = open ((char *) XSTRING_DATA (abspath), O_RDONLY, 0);
|
|
0
|
2088 if (desc < 0)
|
|
|
2089 return Qnil;
|
|
|
2090 close (desc);
|
|
|
2091 return Qt;
|
|
|
2092 }
|
|
|
2093
|
|
|
2094 /* Having this before file-symlink-p mysteriously caused it to be forgotten
|
|
|
2095 on the RT/PC. */
|
|
20
|
2096 DEFUN ("file-writable-p", Ffile_writable_p, 1, 1, 0, /*
|
|
0
|
2097 Return t if file FILENAME can be written or created by you.
|
|
20
|
2098 */
|
|
|
2099 (filename))
|
|
0
|
2100 {
|
|
124
|
2101 /* This function can GC. GC checked 1997.04.10. */
|
|
0
|
2102 Lisp_Object abspath, dir;
|
|
|
2103 Lisp_Object handler;
|
|
|
2104 struct stat statbuf;
|
|
|
2105 struct gcpro gcpro1;
|
|
151
|
2106
|
|
0
|
2107 CHECK_STRING (filename);
|
|
|
2108 abspath = Fexpand_file_name (filename, Qnil);
|
|
|
2109
|
|
|
2110 /* If the file name has special constructs in it,
|
|
|
2111 call the corresponding file handler. */
|
|
|
2112 GCPRO1 (abspath);
|
|
|
2113 handler = Ffind_file_name_handler (abspath, Qfile_writable_p);
|
|
|
2114 UNGCPRO;
|
|
|
2115 if (!NILP (handler))
|
|
|
2116 return call2 (handler, Qfile_writable_p, abspath);
|
|
|
2117
|
|
16
|
2118 if (stat ((char *) XSTRING_DATA (abspath), &statbuf) >= 0)
|
|
|
2119 return (check_writable ((char *) XSTRING_DATA (abspath))
|
|
0
|
2120 ? Qt : Qnil);
|
|
|
2121
|
|
|
2122
|
|
114
|
2123 GCPRO1 (abspath);
|
|
0
|
2124 dir = Ffile_name_directory (abspath);
|
|
114
|
2125 UNGCPRO;
|
|
209
|
2126 #ifdef MSDOS
|
|
0
|
2127 if (!NILP (dir))
|
|
114
|
2128 {
|
|
|
2129 GCPRO1(dir);
|
|
|
2130 dir = Fdirectory_file_name (dir);
|
|
|
2131 UNGCPRO;
|
|
|
2132 }
|
|
209
|
2133 #endif /* MSDOS */
|
|
16
|
2134 return (check_writable (!NILP (dir) ? (char *) XSTRING_DATA (dir)
|
|
0
|
2135 : "")
|
|
|
2136 ? Qt : Qnil);
|
|
|
2137 }
|
|
|
2138
|
|
20
|
2139 DEFUN ("file-symlink-p", Ffile_symlink_p, 1, 1, 0, /*
|
|
0
|
2140 Return non-nil if file FILENAME is the name of a symbolic link.
|
|
|
2141 The value is the name of the file to which it is linked.
|
|
|
2142 Otherwise returns nil.
|
|
20
|
2143 */
|
|
|
2144 (filename))
|
|
0
|
2145 {
|
|
124
|
2146 /* This function can GC. GC checked 1997.04.10. */
|
|
0
|
2147 #ifdef S_IFLNK
|
|
|
2148 char *buf;
|
|
|
2149 int bufsize;
|
|
|
2150 int valsize;
|
|
|
2151 Lisp_Object val;
|
|
|
2152 Lisp_Object handler;
|
|
|
2153 struct gcpro gcpro1;
|
|
151
|
2154
|
|
0
|
2155 CHECK_STRING (filename);
|
|
|
2156 filename = Fexpand_file_name (filename, Qnil);
|
|
|
2157
|
|
|
2158 /* If the file name has special constructs in it,
|
|
|
2159 call the corresponding file handler. */
|
|
116
|
2160 GCPRO1 (filename);
|
|
0
|
2161 handler = Ffind_file_name_handler (filename, Qfile_symlink_p);
|
|
116
|
2162 UNGCPRO;
|
|
0
|
2163 if (!NILP (handler))
|
|
|
2164 return call2 (handler, Qfile_symlink_p, filename);
|
|
|
2165
|
|
|
2166 bufsize = 100;
|
|
|
2167 while (1)
|
|
|
2168 {
|
|
185
|
2169 buf = xnew_array_and_zero (char, bufsize);
|
|
16
|
2170 valsize = readlink ((char *) XSTRING_DATA (filename),
|
|
0
|
2171 buf, bufsize);
|
|
|
2172 if (valsize < bufsize) break;
|
|
|
2173 /* Buffer was not long enough */
|
|
|
2174 xfree (buf);
|
|
|
2175 bufsize *= 2;
|
|
|
2176 }
|
|
|
2177 if (valsize == -1)
|
|
|
2178 {
|
|
|
2179 xfree (buf);
|
|
|
2180 return Qnil;
|
|
|
2181 }
|
|
|
2182 val = make_string ((Bufbyte *) buf, valsize);
|
|
|
2183 xfree (buf);
|
|
|
2184 return val;
|
|
|
2185 #else /* not S_IFLNK */
|
|
|
2186 return Qnil;
|
|
|
2187 #endif /* not S_IFLNK */
|
|
|
2188 }
|
|
|
2189
|
|
20
|
2190 DEFUN ("file-directory-p", Ffile_directory_p, 1, 1, 0, /*
|
|
0
|
2191 Return t if file FILENAME is the name of a directory as a file.
|
|
|
2192 A directory name spec may be given instead; then the value is t
|
|
|
2193 if the directory so specified exists and really is a directory.
|
|
20
|
2194 */
|
|
|
2195 (filename))
|
|
0
|
2196 {
|
|
124
|
2197 /* This function can GC. GC checked 1997.04.10. */
|
|
0
|
2198 Lisp_Object abspath;
|
|
|
2199 struct stat st;
|
|
|
2200 Lisp_Object handler;
|
|
|
2201 struct gcpro gcpro1;
|
|
151
|
2202
|
|
114
|
2203 GCPRO1 (current_buffer->directory);
|
|
0
|
2204 abspath = expand_and_dir_to_file (filename,
|
|
|
2205 current_buffer->directory);
|
|
|
2206 UNGCPRO;
|
|
|
2207
|
|
|
2208 /* If the file name has special constructs in it,
|
|
|
2209 call the corresponding file handler. */
|
|
|
2210 GCPRO1 (abspath);
|
|
|
2211 handler = Ffind_file_name_handler (abspath, Qfile_directory_p);
|
|
|
2212 UNGCPRO;
|
|
|
2213 if (!NILP (handler))
|
|
|
2214 return call2 (handler, Qfile_directory_p, abspath);
|
|
|
2215
|
|
16
|
2216 if (stat ((char *) XSTRING_DATA (abspath), &st) < 0)
|
|
0
|
2217 return Qnil;
|
|
|
2218 return (st.st_mode & S_IFMT) == S_IFDIR ? Qt : Qnil;
|
|
|
2219 }
|
|
|
2220
|
|
20
|
2221 DEFUN ("file-accessible-directory-p", Ffile_accessible_directory_p, 1, 1, 0, /*
|
|
0
|
2222 Return t if file FILENAME is the name of a directory as a file,
|
|
|
2223 and files in that directory can be opened by you. In order to use a
|
|
|
2224 directory as a buffer's current directory, this predicate must return true.
|
|
|
2225 A directory name spec may be given instead; then the value is t
|
|
|
2226 if the directory so specified exists and really is a readable and
|
|
|
2227 searchable directory.
|
|
20
|
2228 */
|
|
|
2229 (filename))
|
|
0
|
2230 {
|
|
124
|
2231 /* This function can GC. GC checked 1997.04.10. */
|
|
0
|
2232 Lisp_Object handler;
|
|
|
2233
|
|
|
2234 /* If the file name has special constructs in it,
|
|
|
2235 call the corresponding file handler. */
|
|
|
2236 handler = Ffind_file_name_handler (filename, Qfile_accessible_directory_p);
|
|
|
2237 if (!NILP (handler))
|
|
|
2238 return call2 (handler, Qfile_accessible_directory_p,
|
|
|
2239 filename);
|
|
|
2240
|
|
|
2241 if (NILP (Ffile_directory_p (filename)))
|
|
|
2242 return (Qnil);
|
|
116
|
2243 else
|
|
|
2244 return Ffile_executable_p (filename);
|
|
0
|
2245 }
|
|
|
2246
|
|
20
|
2247 DEFUN ("file-regular-p", Ffile_regular_p, 1, 1, 0, /*
|
|
0
|
2248 "Return t if file FILENAME is the name of a regular file.
|
|
|
2249 This is the sort of file that holds an ordinary stream of data bytes.
|
|
20
|
2250 */
|
|
|
2251 (filename))
|
|
0
|
2252 {
|
|
124
|
2253 /* This function can GC. GC checked 1997.04.10. */
|
|
114
|
2254 Lisp_Object abspath;
|
|
0
|
2255 struct stat st;
|
|
|
2256 Lisp_Object handler;
|
|
114
|
2257 struct gcpro gcpro1;
|
|
|
2258
|
|
|
2259 GCPRO1 (current_buffer->directory);
|
|
0
|
2260 abspath = expand_and_dir_to_file (filename, current_buffer->directory);
|
|
114
|
2261 UNGCPRO;
|
|
0
|
2262
|
|
|
2263 /* If the file name has special constructs in it,
|
|
|
2264 call the corresponding file handler. */
|
|
114
|
2265 GCPRO1 (abspath);
|
|
0
|
2266 handler = Ffind_file_name_handler (abspath, Qfile_regular_p);
|
|
114
|
2267 UNGCPRO;
|
|
0
|
2268 if (!NILP (handler))
|
|
|
2269 return call2 (handler, Qfile_regular_p, abspath);
|
|
|
2270
|
|
16
|
2271 if (stat ((char *) XSTRING_DATA (abspath), &st) < 0)
|
|
0
|
2272 return Qnil;
|
|
|
2273 return (st.st_mode & S_IFMT) == S_IFREG ? Qt : Qnil;
|
|
|
2274 }
|
|
|
2275
|
|
20
|
2276 DEFUN ("file-modes", Ffile_modes, 1, 1, 0, /*
|
|
0
|
2277 Return mode bits of FILE, as an integer.
|
|
20
|
2278 */
|
|
|
2279 (filename))
|
|
0
|
2280 {
|
|
124
|
2281 /* This function can GC. GC checked 1997.04.10. */
|
|
0
|
2282 Lisp_Object abspath;
|
|
|
2283 struct stat st;
|
|
|
2284 Lisp_Object handler;
|
|
|
2285 struct gcpro gcpro1;
|
|
151
|
2286
|
|
114
|
2287 GCPRO1 (current_buffer->directory);
|
|
0
|
2288 abspath = expand_and_dir_to_file (filename,
|
|
|
2289 current_buffer->directory);
|
|
|
2290 UNGCPRO;
|
|
|
2291
|
|
|
2292 /* If the file name has special constructs in it,
|
|
|
2293 call the corresponding file handler. */
|
|
|
2294 GCPRO1 (abspath);
|
|
|
2295 handler = Ffind_file_name_handler (abspath, Qfile_modes);
|
|
|
2296 UNGCPRO;
|
|
|
2297 if (!NILP (handler))
|
|
|
2298 return call2 (handler, Qfile_modes, abspath);
|
|
|
2299
|
|
16
|
2300 if (stat ((char *) XSTRING_DATA (abspath), &st) < 0)
|
|
0
|
2301 return Qnil;
|
|
|
2302 #ifdef DOS_NT
|
|
100
|
2303 if (check_executable (XSTRING (abspath)->_data))
|
|
0
|
2304 st.st_mode |= S_IEXEC;
|
|
|
2305 #endif /* DOS_NT */
|
|
|
2306
|
|
|
2307 return make_int (st.st_mode & 07777);
|
|
|
2308 }
|
|
|
2309
|
|
20
|
2310 DEFUN ("set-file-modes", Fset_file_modes, 2, 2, 0, /*
|
|
0
|
2311 Set mode bits of FILE to MODE (an integer).
|
|
|
2312 Only the 12 low bits of MODE are used.
|
|
20
|
2313 */
|
|
|
2314 (filename, mode))
|
|
0
|
2315 {
|
|
124
|
2316 /* This function can GC. GC checked 1997.04.10. */
|
|
0
|
2317 Lisp_Object abspath;
|
|
|
2318 Lisp_Object handler;
|
|
114
|
2319 struct gcpro gcpro1;
|
|
151
|
2320
|
|
114
|
2321 GCPRO1 (current_buffer->directory);
|
|
0
|
2322 abspath = Fexpand_file_name (filename, current_buffer->directory);
|
|
116
|
2323 UNGCPRO;
|
|
|
2324
|
|
70
|
2325 CHECK_INT (mode);
|
|
44
|
2326
|
|
0
|
2327 /* If the file name has special constructs in it,
|
|
|
2328 call the corresponding file handler. */
|
|
|
2329 GCPRO1 (abspath);
|
|
|
2330 handler = Ffind_file_name_handler (abspath, Qset_file_modes);
|
|
|
2331 UNGCPRO;
|
|
|
2332 if (!NILP (handler))
|
|
|
2333 return call3 (handler, Qset_file_modes, abspath, mode);
|
|
|
2334
|
|
16
|
2335 if (chmod ((char *) XSTRING_DATA (abspath), XINT (mode)) < 0)
|
|
0
|
2336 report_file_error ("Doing chmod", Fcons (abspath, Qnil));
|
|
|
2337
|
|
|
2338 return Qnil;
|
|
|
2339 }
|
|
|
2340
|
|
20
|
2341 DEFUN ("set-default-file-modes", Fset_default_file_modes, 1, 1, 0, /*
|
|
0
|
2342 Set the file permission bits for newly created files.
|
|
|
2343 MASK should be an integer; if a permission's bit in MASK is 1,
|
|
|
2344 subsequently created files will not have that permission enabled.
|
|
|
2345 Only the low 9 bits are used.
|
|
|
2346 This setting is inherited by subprocesses.
|
|
20
|
2347 */
|
|
|
2348 (mode))
|
|
0
|
2349 {
|
|
|
2350 CHECK_INT (mode);
|
|
151
|
2351
|
|
0
|
2352 umask ((~ XINT (mode)) & 0777);
|
|
|
2353
|
|
|
2354 return Qnil;
|
|
|
2355 }
|
|
|
2356
|
|
20
|
2357 DEFUN ("default-file-modes", Fdefault_file_modes, 0, 0, 0, /*
|
|
0
|
2358 Return the default file protection for created files.
|
|
|
2359 The umask value determines which permissions are enabled in newly
|
|
|
2360 created files. If a permission's bit in the umask is 1, subsequently
|
|
|
2361 created files will not have that permission enabled.
|
|
20
|
2362 */
|
|
|
2363 ())
|
|
0
|
2364 {
|
|
|
2365 int mode;
|
|
|
2366
|
|
|
2367 mode = umask (0);
|
|
|
2368 umask (mode);
|
|
|
2369
|
|
|
2370 return make_int ((~ mode) & 0777);
|
|
|
2371 }
|
|
|
2372
|
|
20
|
2373 DEFUN ("unix-sync", Funix_sync, 0, 0, "", /*
|
|
0
|
2374 Tell Unix to finish all pending disk updates.
|
|
20
|
2375 */
|
|
|
2376 ())
|
|
0
|
2377 {
|
|
100
|
2378 #ifndef WINDOWSNT
|
|
0
|
2379 sync ();
|
|
100
|
2380 #endif
|
|
0
|
2381 return Qnil;
|
|
|
2382 }
|
|
|
2383
|
|
|
2384
|
|
20
|
2385 DEFUN ("file-newer-than-file-p", Ffile_newer_than_file_p, 2, 2, 0, /*
|
|
0
|
2386 Return t if file FILE1 is newer than file FILE2.
|
|
|
2387 If FILE1 does not exist, the answer is nil;
|
|
|
2388 otherwise, if FILE2 does not exist, the answer is t.
|
|
20
|
2389 */
|
|
|
2390 (file1, file2))
|
|
0
|
2391 {
|
|
124
|
2392 /* This function can GC. GC checked 1997.04.10. */
|
|
0
|
2393 Lisp_Object abspath1, abspath2;
|
|
|
2394 struct stat st;
|
|
|
2395 int mtime1;
|
|
|
2396 Lisp_Object handler;
|
|
114
|
2397 struct gcpro gcpro1, gcpro2, gcpro3;
|
|
0
|
2398
|
|
|
2399 CHECK_STRING (file1);
|
|
|
2400 CHECK_STRING (file2);
|
|
|
2401
|
|
|
2402 abspath1 = Qnil;
|
|
114
|
2403 abspath2 = Qnil;
|
|
|
2404
|
|
|
2405 GCPRO3 (abspath1, abspath2, current_buffer->directory);
|
|
|
2406 abspath1 = expand_and_dir_to_file (file1, current_buffer->directory);
|
|
|
2407 abspath2 = expand_and_dir_to_file (file2, current_buffer->directory);
|
|
0
|
2408
|
|
|
2409 /* If the file name has special constructs in it,
|
|
|
2410 call the corresponding file handler. */
|
|
|
2411 handler = Ffind_file_name_handler (abspath1, Qfile_newer_than_file_p);
|
|
|
2412 if (NILP (handler))
|
|
|
2413 handler = Ffind_file_name_handler (abspath2, Qfile_newer_than_file_p);
|
|
|
2414 UNGCPRO;
|
|
|
2415 if (!NILP (handler))
|
|
|
2416 return call3 (handler, Qfile_newer_than_file_p, abspath1,
|
|
|
2417 abspath2);
|
|
|
2418
|
|
16
|
2419 if (stat ((char *) XSTRING_DATA (abspath1), &st) < 0)
|
|
0
|
2420 return Qnil;
|
|
|
2421
|
|
|
2422 mtime1 = st.st_mtime;
|
|
|
2423
|
|
16
|
2424 if (stat ((char *) XSTRING_DATA (abspath2), &st) < 0)
|
|
0
|
2425 return Qt;
|
|
|
2426
|
|
|
2427 return (mtime1 > st.st_mtime) ? Qt : Qnil;
|
|
|
2428 }
|
|
|
2429
|
|
|
2430
|
|
|
2431 #ifdef DOS_NT
|
|
|
2432 Lisp_Object Qfind_buffer_file_type;
|
|
|
2433 #endif /* DOS_NT */
|
|
|
2434
|
|
2
|
2435 /* Stack sizes > 2**16 is a good way to elicit compiler bugs */
|
|
|
2436 /* #define READ_BUF_SIZE (2 << 16) */
|
|
|
2437 #define READ_BUF_SIZE (1 << 15)
|
|
0
|
2438
|
|
20
|
2439 DEFUN ("insert-file-contents-internal",
|
|
70
|
2440 Finsert_file_contents_internal, 1, 7, 0, /*
|
|
|
2441 Insert contents of file FILENAME after point; no coding-system frobbing.
|
|
|
2442 This function is identical to `insert-file-contents' except for the
|
|
|
2443 handling of the CODESYS and USED-CODESYS arguments under
|
|
|
2444 XEmacs/Mule. (When Mule support is not present, both functions are
|
|
|
2445 identical and ignore the CODESYS and USED-CODESYS arguments.)
|
|
|
2446
|
|
|
2447 If support for Mule exists in this Emacs, the file is decoded according
|
|
|
2448 to CODESYS; if omitted, no conversion happens. If USED-CODESYS is non-nil,
|
|
|
2449 it should be a symbol, and the actual coding system that was used for the
|
|
|
2450 decoding is stored into it. It will in general be different from CODESYS
|
|
|
2451 if CODESYS specifies automatic encoding detection or end-of-line detection.
|
|
|
2452
|
|
|
2453 Currently BEG and END refer to byte positions (as opposed to character
|
|
|
2454 positions), even in Mule. (Fixing this is very difficult.)
|
|
20
|
2455 */
|
|
70
|
2456 (filename, visit, beg, end, replace, codesys, used_codesys))
|
|
0
|
2457 {
|
|
116
|
2458 /* This function can call lisp */
|
|
|
2459 /* #### dmoore - this function hasn't been checked for gc recently */
|
|
0
|
2460 struct stat st;
|
|
|
2461 int fd;
|
|
|
2462 int saverrno = 0;
|
|
|
2463 Charcount inserted = 0;
|
|
|
2464 int speccount;
|
|
114
|
2465 struct gcpro gcpro1, gcpro2, gcpro3, gcpro4, gcpro5;
|
|
0
|
2466 Lisp_Object handler = Qnil, val;
|
|
|
2467 int total;
|
|
|
2468 Bufbyte read_buf[READ_BUF_SIZE];
|
|
|
2469 int mc_count;
|
|
|
2470 struct buffer *buf = current_buffer;
|
|
114
|
2471 Lisp_Object curbuf;
|
|
0
|
2472 int not_regular = 0;
|
|
|
2473
|
|
|
2474 if (buf->base_buffer && ! NILP (visit))
|
|
|
2475 error ("Cannot do file visiting in an indirect buffer");
|
|
|
2476
|
|
|
2477 /* No need to call Fbarf_if_buffer_read_only() here.
|
|
|
2478 That's called in begin_multiple_change() or wherever. */
|
|
|
2479
|
|
|
2480 val = Qnil;
|
|
|
2481
|
|
114
|
2482 /* #### dmoore - should probably check in various places to see if
|
|
|
2483 curbuf was killed and if so signal an error? */
|
|
|
2484
|
|
|
2485 XSETBUFFER (curbuf, buf);
|
|
|
2486
|
|
|
2487 GCPRO5 (filename, val, visit, handler, curbuf);
|
|
151
|
2488
|
|
0
|
2489 mc_count = (NILP (replace)) ?
|
|
|
2490 begin_multiple_change (buf, BUF_PT (buf), BUF_PT (buf)) :
|
|
|
2491 begin_multiple_change (buf, BUF_BEG (buf), BUF_Z (buf));
|
|
|
2492
|
|
|
2493 speccount = specpdl_depth (); /* begin_multiple_change also adds
|
|
|
2494 an unwind_protect */
|
|
|
2495
|
|
|
2496 filename = Fexpand_file_name (filename, Qnil);
|
|
|
2497
|
|
|
2498 /* If the file name has special constructs in it,
|
|
|
2499 call the corresponding file handler. */
|
|
|
2500 handler = Ffind_file_name_handler (filename, Qinsert_file_contents);
|
|
|
2501 if (!NILP (handler))
|
|
|
2502 {
|
|
74
|
2503 val = call6 (handler, Qinsert_file_contents, filename,
|
|
|
2504 visit, beg, end, replace);
|
|
0
|
2505 goto handled;
|
|
|
2506 }
|
|
|
2507
|
|
70
|
2508 #ifdef MULE
|
|
|
2509 if (!NILP (used_codesys))
|
|
|
2510 CHECK_SYMBOL (used_codesys);
|
|
|
2511 #endif
|
|
|
2512
|
|
0
|
2513 if ( (!NILP (beg) || !NILP (end)) && !NILP (visit) )
|
|
|
2514 error ("Attempt to visit less than an entire file");
|
|
151
|
2515
|
|
0
|
2516 fd = -1;
|
|
|
2517
|
|
|
2518 #ifndef APOLLO
|
|
16
|
2519 if (stat ((char *) XSTRING_DATA (filename), &st) < 0)
|
|
0
|
2520 #else /* APOLLO */
|
|
16
|
2521 if ((fd = open ((char *) XSTRING_DATA (filename), O_RDONLY, 0)) < 0
|
|
0
|
2522 || fstat (fd, &st) < 0)
|
|
|
2523 #endif /* APOLLO */
|
|
|
2524 {
|
|
|
2525 if (fd >= 0) close (fd);
|
|
|
2526 badopen:
|
|
|
2527 if (NILP (visit))
|
|
|
2528 report_file_error ("Opening input file",
|
|
|
2529 Fcons (filename, Qnil));
|
|
|
2530 st.st_mtime = -1;
|
|
|
2531 goto notfound;
|
|
|
2532 }
|
|
|
2533
|
|
|
2534 #ifdef S_IFREG
|
|
209
|
2535 /* Signal an error if we are accessing a non-regular file, with
|
|
|
2536 REPLACE, BEG or END being non-nil. */
|
|
0
|
2537 if (!S_ISREG (st.st_mode))
|
|
|
2538 {
|
|
173
|
2539 not_regular = 1;
|
|
|
2540
|
|
|
2541 if (!NILP (visit))
|
|
|
2542 goto notfound;
|
|
|
2543
|
|
|
2544 if (!NILP (replace) || !NILP (beg) || !NILP (end))
|
|
0
|
2545 {
|
|
|
2546 end_multiple_change (buf, mc_count);
|
|
|
2547
|
|
|
2548 return Fsignal (Qfile_error,
|
|
|
2549 list2 (build_translated_string("not a regular file"),
|
|
|
2550 filename));
|
|
|
2551 }
|
|
|
2552 }
|
|
183
|
2553 #endif /* S_IFREG */
|
|
0
|
2554
|
|
173
|
2555 if (!NILP (beg))
|
|
|
2556 CHECK_INT (beg);
|
|
|
2557 else
|
|
|
2558 beg = Qzero;
|
|
|
2559
|
|
|
2560 if (!NILP (end))
|
|
|
2561 CHECK_INT (end);
|
|
|
2562
|
|
209
|
2563 /* Here, we should call some form of interruptable_open, so the user
|
|
|
2564 can quit gracefully when opening named pipes. interruptable_open
|
|
|
2565 should be just like sys_open in sysdep.c, only it would call QUIT
|
|
|
2566 if interrupted by EINTR. */
|
|
0
|
2567 if (fd < 0)
|
|
16
|
2568 if ((fd = open ((char *) XSTRING_DATA (filename), O_RDONLY, 0)) < 0)
|
|
0
|
2569 goto badopen;
|
|
|
2570
|
|
|
2571 /* Replacement should preserve point as it preserves markers. */
|
|
|
2572 if (!NILP (replace))
|
|
|
2573 record_unwind_protect (restore_point_unwind, Fpoint_marker (Qnil, Qnil));
|
|
|
2574
|
|
|
2575 record_unwind_protect (close_file_unwind, make_int (fd));
|
|
|
2576
|
|
|
2577 /* Supposedly happens on VMS. */
|
|
|
2578 if (st.st_size < 0)
|
|
|
2579 error ("File size is negative");
|
|
|
2580
|
|
|
2581 if (NILP (end))
|
|
|
2582 {
|
|
173
|
2583 if (!not_regular)
|
|
|
2584 {
|
|
|
2585 end = make_int (st.st_size);
|
|
|
2586 if (XINT (end) != st.st_size)
|
|
|
2587 error ("Maximum buffer size exceeded");
|
|
|
2588 }
|
|
0
|
2589 }
|
|
|
2590
|
|
|
2591 /* If requested, replace the accessible part of the buffer
|
|
|
2592 with the file contents. Avoid replacing text at the
|
|
|
2593 beginning or end of the buffer that matches the file contents;
|
|
|
2594 that preserves markers pointing to the unchanged parts. */
|
|
16
|
2595 #if !defined (DOS_NT) && !defined (MULE)
|
|
0
|
2596 /* The replace-mode code currently only works when the assumption
|
|
|
2597 'one byte == one char' holds true. This fails under MSDOS and
|
|
|
2598 Windows NT (because newlines are represented as CR-LF in text
|
|
20
|
2599 files) and under Mule because files may contain multibyte characters. */
|
|
0
|
2600 # define FSFMACS_SPEEDY_INSERT
|
|
|
2601 #endif
|
|
|
2602 #ifndef FSFMACS_SPEEDY_INSERT
|
|
|
2603 if (!NILP (replace))
|
|
|
2604 {
|
|
|
2605 buffer_delete_range (buf, BUF_BEG (buf), BUF_Z (buf),
|
|
|
2606 !NILP (visit) ? INSDEL_NO_LOCKING : 0);
|
|
|
2607 }
|
|
|
2608 #else /* FSFMACS_SPEEDY_INSERT */
|
|
|
2609 if (!NILP (replace))
|
|
|
2610 {
|
|
|
2611 char buffer[1 << 14];
|
|
|
2612 Bufpos same_at_start = BUF_BEGV (buf);
|
|
|
2613 Bufpos same_at_end = BUF_ZV (buf);
|
|
|
2614 int overlap;
|
|
|
2615
|
|
|
2616 /* Count how many chars at the start of the file
|
|
|
2617 match the text at the beginning of the buffer. */
|
|
|
2618 while (1)
|
|
|
2619 {
|
|
|
2620 int nread;
|
|
|
2621 Bufpos bufpos;
|
|
|
2622
|
|
|
2623 nread = read_allowing_quit (fd, buffer, sizeof buffer);
|
|
|
2624 if (nread < 0)
|
|
|
2625 error ("IO error reading %s: %s",
|
|
16
|
2626 XSTRING_DATA (filename), strerror (errno));
|
|
0
|
2627 else if (nread == 0)
|
|
|
2628 break;
|
|
|
2629 bufpos = 0;
|
|
|
2630 while (bufpos < nread && same_at_start < BUF_ZV (buf)
|
|
|
2631 && BUF_FETCH_CHAR (buf, same_at_start) == buffer[bufpos])
|
|
|
2632 same_at_start++, bufpos++;
|
|
|
2633 /* If we found a discrepancy, stop the scan.
|
|
|
2634 Otherwise loop around and scan the next bufferfull. */
|
|
|
2635 if (bufpos != nread)
|
|
|
2636 break;
|
|
|
2637 }
|
|
|
2638 /* If the file matches the buffer completely,
|
|
|
2639 there's no need to replace anything. */
|
|
|
2640 if (same_at_start - BUF_BEGV (buf) == st.st_size)
|
|
|
2641 {
|
|
|
2642 close (fd);
|
|
|
2643 unbind_to (speccount, Qnil);
|
|
|
2644 /* Truncate the buffer to the size of the file. */
|
|
|
2645 buffer_delete_range (buf, same_at_start, same_at_end,
|
|
|
2646 !NILP (visit) ? INSDEL_NO_LOCKING : 0);
|
|
|
2647 goto handled;
|
|
|
2648 }
|
|
|
2649 /* Count how many chars at the end of the file
|
|
|
2650 match the text at the end of the buffer. */
|
|
|
2651 while (1)
|
|
|
2652 {
|
|
|
2653 int total_read, nread;
|
|
|
2654 Bufpos bufpos, curpos, trial;
|
|
|
2655
|
|
|
2656 /* At what file position are we now scanning? */
|
|
|
2657 curpos = st.st_size - (BUF_ZV (buf) - same_at_end);
|
|
|
2658 /* If the entire file matches the buffer tail, stop the scan. */
|
|
|
2659 if (curpos == 0)
|
|
|
2660 break;
|
|
|
2661 /* How much can we scan in the next step? */
|
|
|
2662 trial = min (curpos, sizeof buffer);
|
|
|
2663 if (lseek (fd, curpos - trial, 0) < 0)
|
|
|
2664 report_file_error ("Setting file position",
|
|
|
2665 Fcons (filename, Qnil));
|
|
|
2666
|
|
|
2667 total_read = 0;
|
|
|
2668 while (total_read < trial)
|
|
|
2669 {
|
|
|
2670 nread = read_allowing_quit (fd, buffer + total_read,
|
|
|
2671 trial - total_read);
|
|
|
2672 if (nread <= 0)
|
|
|
2673 error ("IO error reading %s: %s",
|
|
16
|
2674 XSTRING_DATA (filename), strerror (errno));
|
|
0
|
2675 total_read += nread;
|
|
|
2676 }
|
|
|
2677 /* Scan this bufferfull from the end, comparing with
|
|
|
2678 the Emacs buffer. */
|
|
|
2679 bufpos = total_read;
|
|
|
2680 /* Compare with same_at_start to avoid counting some buffer text
|
|
|
2681 as matching both at the file's beginning and at the end. */
|
|
|
2682 while (bufpos > 0 && same_at_end > same_at_start
|
|
|
2683 && BUF_FETCH_CHAR (buf, same_at_end - 1) ==
|
|
|
2684 buffer[bufpos - 1])
|
|
|
2685 same_at_end--, bufpos--;
|
|
|
2686 /* If we found a discrepancy, stop the scan.
|
|
|
2687 Otherwise loop around and scan the preceding bufferfull. */
|
|
|
2688 if (bufpos != 0)
|
|
|
2689 break;
|
|
|
2690 /* If display current starts at beginning of line,
|
|
|
2691 keep it that way. */
|
|
|
2692 if (XBUFFER (XWINDOW (Fselected_window (Qnil))->buffer) == buf)
|
|
|
2693 XWINDOW (Fselected_window (Qnil))->start_at_line_beg =
|
|
|
2694 !NILP (Fbolp (make_buffer (buf)));
|
|
|
2695 }
|
|
|
2696
|
|
|
2697 /* Don't try to reuse the same piece of text twice. */
|
|
|
2698 overlap = same_at_start - BUF_BEGV (buf) -
|
|
|
2699 (same_at_end + st.st_size - BUF_ZV (buf));
|
|
|
2700 if (overlap > 0)
|
|
|
2701 same_at_end += overlap;
|
|
|
2702
|
|
|
2703 /* Arrange to read only the nonmatching middle part of the file. */
|
|
|
2704 beg = make_int (same_at_start - BUF_BEGV (buf));
|
|
|
2705 end = make_int (st.st_size - (BUF_ZV (buf) - same_at_end));
|
|
|
2706
|
|
|
2707 buffer_delete_range (buf, same_at_start, same_at_end,
|
|
|
2708 !NILP (visit) ? INSDEL_NO_LOCKING : 0);
|
|
|
2709 /* Insert from the file at the proper position. */
|
|
|
2710 BUF_SET_PT (buf, same_at_start);
|
|
|
2711 }
|
|
|
2712 #endif /* FSFMACS_SPEEDY_INSERT */
|
|
|
2713
|
|
173
|
2714 if (!not_regular)
|
|
|
2715 {
|
|
|
2716 Lisp_Object temp;
|
|
|
2717
|
|
|
2718 total = XINT (end) - XINT (beg);
|
|
|
2719
|
|
|
2720 /* Make sure point-max won't overflow after this insertion. */
|
|
|
2721 XSETINT (temp, total);
|
|
|
2722 if (total != XINT (temp))
|
|
|
2723 error ("Maximum buffer size exceeded");
|
|
|
2724 }
|
|
|
2725 else
|
|
|
2726 /* For a special file, all we can do is guess. */
|
|
|
2727 total = READ_BUF_SIZE;
|
|
0
|
2728
|
|
|
2729 if (XINT (beg) != 0
|
|
|
2730 #ifdef FSFMACS_SPEEDY_INSERT
|
|
|
2731 /* why was this here? asked jwz. The reason is that the replace-mode
|
|
|
2732 connivings above will normally put the file pointer other than
|
|
|
2733 where it should be. */
|
|
|
2734 || !NILP (replace)
|
|
|
2735 #endif /* !FSFMACS_SPEEDY_INSERT */
|
|
|
2736 )
|
|
|
2737 {
|
|
|
2738 if (lseek (fd, XINT (beg), 0) < 0)
|
|
|
2739 report_file_error ("Setting file position",
|
|
|
2740 Fcons (filename, Qnil));
|
|
|
2741 }
|
|
|
2742
|
|
|
2743 {
|
|
|
2744 Bufpos cur_point = BUF_PT (buf);
|
|
|
2745 struct gcpro ngcpro1;
|
|
|
2746 Lisp_Object stream = make_filedesc_input_stream (fd, 0, total,
|
|
|
2747 LSTR_ALLOW_QUIT);
|
|
|
2748
|
|
|
2749 NGCPRO1 (stream);
|
|
|
2750 Lstream_set_buffering (XLSTREAM (stream), LSTREAM_BLOCKN_BUFFERED, 65536);
|
|
70
|
2751 #ifdef MULE
|
|
|
2752 stream = make_decoding_input_stream
|
|
|
2753 (XLSTREAM (stream), Fget_coding_system (codesys));
|
|
|
2754 Lstream_set_character_mode (XLSTREAM (stream));
|
|
|
2755 Lstream_set_buffering (XLSTREAM (stream), LSTREAM_BLOCKN_BUFFERED, 65536);
|
|
183
|
2756 #endif /* MULE */
|
|
0
|
2757
|
|
|
2758 record_unwind_protect (close_stream_unwind, stream);
|
|
|
2759
|
|
16
|
2760 /* No need to limit the amount of stuff we attempt to read. (It would
|
|
|
2761 be incorrect, anyway, when Mule is enabled.) Instead, the limiting
|
|
|
2762 occurs inside of the filedesc stream. */
|
|
0
|
2763 while (1)
|
|
|
2764 {
|
|
|
2765 Bytecount this_len;
|
|
|
2766 Charcount cc_inserted;
|
|
|
2767
|
|
|
2768 QUIT;
|
|
|
2769 this_len = Lstream_read (XLSTREAM (stream), read_buf,
|
|
|
2770 sizeof (read_buf));
|
|
151
|
2771
|
|
0
|
2772 if (this_len <= 0)
|
|
|
2773 {
|
|
|
2774 if (this_len < 0)
|
|
|
2775 saverrno = errno;
|
|
|
2776 break;
|
|
|
2777 }
|
|
|
2778
|
|
|
2779 cc_inserted = buffer_insert_raw_string_1 (buf, cur_point, read_buf,
|
|
|
2780 this_len,
|
|
|
2781 !NILP (visit)
|
|
|
2782 ? INSDEL_NO_LOCKING : 0);
|
|
|
2783 inserted += cc_inserted;
|
|
|
2784 cur_point += cc_inserted;
|
|
|
2785 }
|
|
70
|
2786 #ifdef MULE
|
|
|
2787 if (!NILP (used_codesys))
|
|
|
2788 {
|
|
|
2789 Fset (used_codesys,
|
|
|
2790 XCODING_SYSTEM_NAME (decoding_stream_coding_system (XLSTREAM (stream))));
|
|
|
2791 }
|
|
183
|
2792 #endif /* MULE */
|
|
0
|
2793 NUNGCPRO;
|
|
|
2794 }
|
|
|
2795
|
|
100
|
2796 #if 0
|
|
|
2797 /* XXXX Why the #### ? Bogus anyway. If they are there, display em! */
|
|
0
|
2798 #ifdef DOS_NT
|
|
|
2799 /* Determine file type from name and remove LFs from CR-LFs if the file
|
|
|
2800 is deemed to be a text file. */
|
|
|
2801 {
|
|
|
2802 struct gcpro gcpro1;
|
|
|
2803 GCPRO1 (filename);
|
|
|
2804 buf->buffer_file_type
|
|
|
2805 = call1_in_buffer (buf, Qfind_buffer_file_type, filename);
|
|
|
2806 UNGCPRO;
|
|
|
2807 if (NILP (buf->buffer_file_type))
|
|
|
2808 {
|
|
|
2809 buffer_do_msdos_crlf_to_lf (buf, ####);
|
|
|
2810 }
|
|
|
2811 }
|
|
|
2812 #endif
|
|
183
|
2813 #endif /* 0 */
|
|
0
|
2814
|
|
|
2815 /* Close the file/stream */
|
|
|
2816 unbind_to (speccount, Qnil);
|
|
|
2817
|
|
|
2818 if (saverrno != 0)
|
|
|
2819 {
|
|
|
2820 error ("IO error reading %s: %s",
|
|
16
|
2821 XSTRING_DATA (filename), strerror (saverrno));
|
|
0
|
2822 }
|
|
|
2823
|
|
|
2824 notfound:
|
|
|
2825 handled:
|
|
|
2826
|
|
|
2827 end_multiple_change (buf, mc_count);
|
|
|
2828
|
|
|
2829 if (!NILP (visit))
|
|
|
2830 {
|
|
|
2831 if (!EQ (buf->undo_list, Qt))
|
|
|
2832 buf->undo_list = Qnil;
|
|
|
2833 #ifdef APOLLO
|
|
16
|
2834 stat ((char *) XSTRING_DATA (filename), &st);
|
|
0
|
2835 #endif
|
|
|
2836 if (NILP (handler))
|
|
|
2837 {
|
|
|
2838 buf->modtime = st.st_mtime;
|
|
|
2839 buf->filename = filename;
|
|
|
2840 /* XEmacs addition: */
|
|
|
2841 /* This function used to be in C, ostensibly so that
|
|
|
2842 it could be called here. But that's just silly.
|
|
|
2843 There's no reason C code can't call out to Lisp
|
|
|
2844 code, and it's a lot cleaner this way. */
|
|
|
2845 if (!NILP (Ffboundp (Qcompute_buffer_file_truename)))
|
|
|
2846 call1 (Qcompute_buffer_file_truename, make_buffer (buf));
|
|
|
2847 }
|
|
|
2848 BUF_SAVE_MODIFF (buf) = BUF_MODIFF (buf);
|
|
|
2849 buf->auto_save_modified = BUF_MODIFF (buf);
|
|
|
2850 buf->save_length = make_int (BUF_SIZE (buf));
|
|
|
2851 #ifdef CLASH_DETECTION
|
|
|
2852 if (NILP (handler))
|
|
|
2853 {
|
|
|
2854 if (!NILP (buf->file_truename))
|
|
|
2855 unlock_file (buf->file_truename);
|
|
|
2856 unlock_file (filename);
|
|
|
2857 }
|
|
|
2858 #endif /* CLASH_DETECTION */
|
|
|
2859 if (not_regular)
|
|
|
2860 RETURN_UNGCPRO (Fsignal (Qfile_error,
|
|
|
2861 list2 (build_string ("not a regular file"),
|
|
|
2862 filename)));
|
|
|
2863
|
|
|
2864 /* If visiting nonexistent file, return nil. */
|
|
|
2865 if (buf->modtime == -1)
|
|
|
2866 report_file_error ("Opening input file",
|
|
|
2867 list1 (filename));
|
|
|
2868 }
|
|
|
2869
|
|
|
2870 /* Decode file format */
|
|
|
2871 if (inserted > 0)
|
|
|
2872 {
|
|
151
|
2873 Lisp_Object insval = call3 (Qformat_decode,
|
|
0
|
2874 Qnil, make_int (inserted), visit);
|
|
|
2875 CHECK_INT (insval);
|
|
|
2876 inserted = XINT (insval);
|
|
|
2877 }
|
|
|
2878
|
|
|
2879 if (inserted > 0)
|
|
|
2880 {
|
|
|
2881 Lisp_Object p = Vafter_insert_file_functions;
|
|
|
2882 struct gcpro ngcpro1;
|
|
|
2883
|
|
|
2884 NGCPRO1 (p);
|
|
|
2885 while (!NILP (p))
|
|
|
2886 {
|
|
|
2887 Lisp_Object insval =
|
|
|
2888 call1 (Fcar (p), make_int (inserted));
|
|
|
2889 if (!NILP (insval))
|
|
|
2890 {
|
|
|
2891 CHECK_NATNUM (insval);
|
|
|
2892 inserted = XINT (insval);
|
|
|
2893 }
|
|
|
2894 QUIT;
|
|
|
2895 p = Fcdr (p);
|
|
|
2896 }
|
|
|
2897 NUNGCPRO;
|
|
|
2898 }
|
|
|
2899
|
|
|
2900 UNGCPRO;
|
|
|
2901
|
|
|
2902 if (!NILP (val))
|
|
|
2903 return (val);
|
|
|
2904 else
|
|
|
2905 return (list2 (filename, make_int (inserted)));
|
|
|
2906 }
|
|
|
2907
|
|
|
2908
|
|
|
2909 static int a_write (Lisp_Object outstream, Lisp_Object instream, int pos,
|
|
|
2910 Lisp_Object *annot);
|
|
|
2911 static Lisp_Object build_annotations (Lisp_Object start, Lisp_Object end);
|
|
|
2912
|
|
|
2913 /* If build_annotations switched buffers, switch back to BUF.
|
|
|
2914 Kill the temporary buffer that was selected in the meantime. */
|
|
|
2915
|
|
151
|
2916 static Lisp_Object
|
|
0
|
2917 build_annotations_unwind (Lisp_Object buf)
|
|
|
2918 {
|
|
|
2919 Lisp_Object tembuf;
|
|
|
2920
|
|
|
2921 if (XBUFFER (buf) == current_buffer)
|
|
|
2922 return Qnil;
|
|
|
2923 tembuf = Fcurrent_buffer ();
|
|
|
2924 Fset_buffer (buf);
|
|
|
2925 Fkill_buffer (tembuf);
|
|
|
2926 return Qnil;
|
|
|
2927 }
|
|
|
2928
|
|
70
|
2929 DEFUN ("write-region-internal", Fwrite_region_internal, 3, 7,
|
|
20
|
2930 "r\nFWrite region to file: ", /*
|
|
70
|
2931 Write current region into specified file; no coding-system frobbing.
|
|
|
2932 This function is identical to `write-region' except for the handling
|
|
|
2933 of the CODESYS argument under XEmacs/Mule. (When Mule support is not
|
|
|
2934 present, both functions are identical and ignore the CODESYS argument.)
|
|
|
2935 If support for Mule exists in this Emacs, the file is encoded according
|
|
|
2936 to the value of CODESYS. If this is nil, no code conversion occurs.
|
|
20
|
2937 */
|
|
70
|
2938 (start, end, filename, append, visit, lockname, codesys))
|
|
0
|
2939 {
|
|
116
|
2940 /* This function can call lisp */
|
|
0
|
2941 int desc;
|
|
|
2942 int failure;
|
|
|
2943 int save_errno = 0;
|
|
|
2944 struct stat st;
|
|
|
2945 Lisp_Object fn;
|
|
|
2946 int speccount = specpdl_depth ();
|
|
|
2947 int visiting_other = STRINGP (visit);
|
|
|
2948 int visiting = (EQ (visit, Qt) || visiting_other);
|
|
|
2949 int quietly = (!visiting && !NILP (visit));
|
|
|
2950 Lisp_Object visit_file = Qnil;
|
|
|
2951 Lisp_Object annotations = Qnil;
|
|
|
2952 struct buffer *given_buffer;
|
|
|
2953 Bufpos start1, end1;
|
|
|
2954
|
|
114
|
2955 /* #### dmoore - if Fexpand_file_name or handlers kill the buffer,
|
|
|
2956 we should signal an error rather than blissfully continuing
|
|
|
2957 along. ARGH, this function is going to lose lose lose. We need
|
|
|
2958 to protect the current_buffer from being destroyed, but the
|
|
|
2959 multiple return points make this a pain in the butt. */
|
|
|
2960
|
|
167
|
2961 #if 0
|
|
0
|
2962 #ifdef DOS_NT
|
|
|
2963 int buffer_file_type
|
|
|
2964 = NILP (current_buffer->buffer_file_type) ? O_TEXT : O_BINARY;
|
|
|
2965 #endif /* DOS_NT */
|
|
183
|
2966 #endif /* 0 */
|
|
0
|
2967
|
|
70
|
2968 #ifdef MULE
|
|
|
2969 codesys = Fget_coding_system (codesys);
|
|
|
2970 #endif /* MULE */
|
|
|
2971
|
|
0
|
2972 if (current_buffer->base_buffer && ! NILP (visit))
|
|
|
2973 error ("Cannot do file visiting in an indirect buffer");
|
|
|
2974
|
|
|
2975 if (!NILP (start) && !STRINGP (start))
|
|
|
2976 get_buffer_range_char (current_buffer, start, end, &start1, &end1, 0);
|
|
|
2977
|
|
|
2978 {
|
|
|
2979 Lisp_Object handler;
|
|
|
2980 struct gcpro gcpro1, gcpro2, gcpro3, gcpro4, gcpro5;
|
|
114
|
2981
|
|
0
|
2982 GCPRO5 (start, filename, visit, visit_file, lockname);
|
|
|
2983
|
|
|
2984 if (visiting_other)
|
|
|
2985 visit_file = Fexpand_file_name (visit, Qnil);
|
|
|
2986 else
|
|
|
2987 visit_file = filename;
|
|
|
2988 filename = Fexpand_file_name (filename, Qnil);
|
|
|
2989
|
|
|
2990 UNGCPRO;
|
|
|
2991
|
|
|
2992 if (NILP (lockname))
|
|
|
2993 lockname = visit_file;
|
|
|
2994
|
|
|
2995 /* If the file name has special constructs in it,
|
|
|
2996 call the corresponding file handler. */
|
|
|
2997 handler = Ffind_file_name_handler (filename, Qwrite_region);
|
|
|
2998 /* If FILENAME has no handler, see if VISIT has one. */
|
|
|
2999 if (NILP (handler) && STRINGP (visit))
|
|
|
3000 handler = Ffind_file_name_handler (visit, Qwrite_region);
|
|
|
3001
|
|
|
3002 if (!NILP (handler))
|
|
|
3003 {
|
|
151
|
3004 Lisp_Object val = call8 (handler, Qwrite_region, start, end,
|
|
86
|
3005 filename, append, visit, lockname, codesys);
|
|
0
|
3006 if (visiting)
|
|
|
3007 {
|
|
|
3008 BUF_SAVE_MODIFF (current_buffer) = BUF_MODIFF (current_buffer);
|
|
|
3009 current_buffer->save_length =
|
|
|
3010 make_int (BUF_SIZE (current_buffer));
|
|
|
3011 current_buffer->filename = visit_file;
|
|
|
3012 MARK_MODELINE_CHANGED;
|
|
|
3013 }
|
|
|
3014 return val;
|
|
|
3015 }
|
|
|
3016 }
|
|
|
3017
|
|
|
3018 #ifdef CLASH_DETECTION
|
|
|
3019 if (!auto_saving)
|
|
|
3020 {
|
|
114
|
3021 Lisp_Object curbuf;
|
|
|
3022 struct gcpro gcpro1, gcpro2, gcpro3, gcpro4, gcpro5;
|
|
|
3023
|
|
|
3024 XSETBUFFER (curbuf, current_buffer);
|
|
|
3025 GCPRO5 (start, filename, visit_file, lockname, curbuf);
|
|
0
|
3026 lock_file (lockname);
|
|
|
3027 UNGCPRO;
|
|
|
3028 }
|
|
|
3029 #endif /* CLASH_DETECTION */
|
|
|
3030
|
|
|
3031 /* Special kludge to simplify auto-saving. */
|
|
|
3032 if (NILP (start))
|
|
|
3033 {
|
|
|
3034 start1 = BUF_BEG (current_buffer);
|
|
|
3035 end1 = BUF_Z (current_buffer);
|
|
|
3036 }
|
|
|
3037
|
|
|
3038 record_unwind_protect (build_annotations_unwind, Fcurrent_buffer ());
|
|
|
3039
|
|
|
3040 given_buffer = current_buffer;
|
|
|
3041 annotations = build_annotations (start, end);
|
|
|
3042 if (current_buffer != given_buffer)
|
|
|
3043 {
|
|
|
3044 start1 = BUF_BEGV (current_buffer);
|
|
|
3045 end1 = BUF_ZV (current_buffer);
|
|
|
3046 }
|
|
|
3047
|
|
|
3048 fn = filename;
|
|
|
3049 desc = -1;
|
|
|
3050 if (!NILP (append))
|
|
|
3051 #ifdef DOS_NT
|
|
16
|
3052 desc = open ((char *) XSTRING_DATA (fn),
|
|
167
|
3053 (O_WRONLY | O_BINARY), 0);
|
|
0
|
3054 #else /* not DOS_NT */
|
|
16
|
3055 desc = open ((char *) XSTRING_DATA (fn), O_WRONLY, 0);
|
|
0
|
3056 #endif /* not DOS_NT */
|
|
|
3057
|
|
|
3058 if (desc < 0)
|
|
|
3059 {
|
|
|
3060 #ifdef DOS_NT
|
|
151
|
3061 desc = open ((char *) XSTRING_DATA (fn),
|
|
167
|
3062 (O_WRONLY | O_TRUNC | O_CREAT | O_BINARY),
|
|
0
|
3063 (S_IREAD | S_IWRITE));
|
|
|
3064 #else /* not DOS_NT */
|
|
16
|
3065 desc = creat ((char *) XSTRING_DATA (fn),
|
|
0
|
3066 ((auto_saving) ? auto_save_mode_bits : 0666));
|
|
|
3067 #endif /* DOS_NT */
|
|
|
3068 }
|
|
|
3069
|
|
|
3070 if (desc < 0)
|
|
|
3071 {
|
|
|
3072 #ifdef CLASH_DETECTION
|
|
|
3073 save_errno = errno;
|
|
|
3074 if (!auto_saving) unlock_file (lockname);
|
|
|
3075 errno = save_errno;
|
|
|
3076 #endif /* CLASH_DETECTION */
|
|
|
3077 report_file_error ("Opening output file",
|
|
|
3078 Fcons (filename, Qnil));
|
|
|
3079 }
|
|
|
3080
|
|
|
3081 {
|
|
|
3082 Lisp_Object desc_locative = Fcons (make_int (desc), Qnil);
|
|
|
3083 Lisp_Object instream = Qnil, outstream = Qnil;
|
|
|
3084 struct gcpro gcpro1, gcpro2;
|
|
|
3085 /* need to gcpro; QUIT could happen out of call to write() */
|
|
|
3086 GCPRO2 (instream, outstream);
|
|
|
3087
|
|
|
3088 record_unwind_protect (close_file_unwind, desc_locative);
|
|
|
3089
|
|
|
3090 if (!NILP (append))
|
|
|
3091 {
|
|
|
3092 if (lseek (desc, 0, 2) < 0)
|
|
|
3093 {
|
|
|
3094 #ifdef CLASH_DETECTION
|
|
|
3095 if (!auto_saving) unlock_file (lockname);
|
|
|
3096 #endif /* CLASH_DETECTION */
|
|
|
3097 report_file_error ("Lseek error",
|
|
|
3098 list1 (filename));
|
|
|
3099 }
|
|
|
3100 }
|
|
|
3101
|
|
|
3102 failure = 0;
|
|
|
3103
|
|
|
3104 /* Note: I tried increasing the buffering size, along with
|
|
|
3105 various other tricks, but nothing seemed to make much of
|
|
|
3106 a difference in the time it took to save a large file.
|
|
|
3107 (Actually that's not true. With a local disk, changing
|
|
|
3108 the buffer size doesn't seem to make much difference.
|
|
|
3109 With an NFS-mounted disk, it could make a lot of difference
|
|
|
3110 because you're affecting the number of network requests
|
|
|
3111 that need to be made, and there could be a large latency
|
|
|
3112 for each request. So I've increased the buffer size
|
|
|
3113 to 64K.) */
|
|
|
3114 outstream = make_filedesc_output_stream (desc, 0, -1, 0);
|
|
|
3115 Lstream_set_buffering (XLSTREAM (outstream),
|
|
|
3116 LSTREAM_BLOCKN_BUFFERED, 65536);
|
|
70
|
3117 #ifdef MULE
|
|
|
3118 outstream =
|
|
185
|
3119 make_encoding_output_stream (XLSTREAM (outstream), codesys);
|
|
70
|
3120 Lstream_set_buffering (XLSTREAM (outstream),
|
|
|
3121 LSTREAM_BLOCKN_BUFFERED, 65536);
|
|
183
|
3122 #endif /* MULE */
|
|
0
|
3123 if (STRINGP (start))
|
|
|
3124 {
|
|
|
3125 instream = make_lisp_string_input_stream (start, 0, -1);
|
|
|
3126 start1 = 0;
|
|
|
3127 }
|
|
|
3128 else
|
|
|
3129 instream = make_lisp_buffer_input_stream (current_buffer, start1, end1,
|
|
|
3130 LSTR_SELECTIVE |
|
|
|
3131 LSTR_IGNORE_ACCESSIBLE);
|
|
|
3132 failure = (0 > (a_write (outstream, instream, start1,
|
|
|
3133 &annotations)));
|
|
|
3134 save_errno = errno;
|
|
|
3135 /* Note that this doesn't close the desc since we created the
|
|
|
3136 stream without the LSTR_CLOSING flag, but it does
|
|
|
3137 flush out any buffered data. */
|
|
|
3138 if (Lstream_close (XLSTREAM (outstream)) < 0)
|
|
|
3139 {
|
|
|
3140 failure = 1;
|
|
|
3141 save_errno = errno;
|
|
|
3142 }
|
|
|
3143 Lstream_close (XLSTREAM (instream));
|
|
|
3144 UNGCPRO;
|
|
|
3145
|
|
|
3146 #ifdef HAVE_FSYNC
|
|
|
3147 /* Note fsync appears to change the modtime on BSD4.2 (both vax and sun).
|
|
|
3148 Disk full in NFS may be reported here. */
|
|
|
3149 /* mib says that closing the file will try to write as fast as NFS can do
|
|
|
3150 it, and that means the fsync here is not crucial for autosave files. */
|
|
|
3151 if (!auto_saving && fsync (desc) < 0
|
|
|
3152 /* If fsync fails with EINTR, don't treat that as serious. */
|
|
|
3153 && errno != EINTR)
|
|
|
3154 {
|
|
|
3155 failure = 1;
|
|
|
3156 save_errno = errno;
|
|
|
3157 }
|
|
183
|
3158 #endif /* HAVE_FSYNC */
|
|
0
|
3159
|
|
151
|
3160 /* Spurious "file has changed on disk" warnings have been
|
|
0
|
3161 observed on Suns as well.
|
|
|
3162 It seems that `close' can change the modtime, under nfs.
|
|
|
3163
|
|
|
3164 (This has supposedly been fixed in Sunos 4,
|
|
|
3165 but who knows about all the other machines with NFS?) */
|
|
|
3166 /* On VMS and APOLLO, must do the stat after the close
|
|
|
3167 since closing changes the modtime. */
|
|
|
3168 #if 0 /* !defined (VMS) && !defined (APOLLO) */
|
|
|
3169 fstat (desc, &st);
|
|
|
3170 #endif
|
|
|
3171
|
|
|
3172 /* NFS can report a write failure now. */
|
|
|
3173 if (close (desc) < 0)
|
|
|
3174 {
|
|
|
3175 failure = 1;
|
|
|
3176 save_errno = errno;
|
|
|
3177 }
|
|
|
3178
|
|
|
3179 /* Discard the close unwind-protect. Execute the one for
|
|
|
3180 build_annotations (switches back to the original current buffer
|
|
|
3181 as necessary). */
|
|
|
3182 XCAR (desc_locative) = Qnil;
|
|
|
3183 unbind_to (speccount, Qnil);
|
|
|
3184 }
|
|
151
|
3185
|
|
0
|
3186
|
|
|
3187 #if 1 /* defined (VMS) || defined (APOLLO) */
|
|
16
|
3188 stat ((char *) XSTRING_DATA (fn), &st);
|
|
0
|
3189 #endif
|
|
|
3190
|
|
|
3191 #ifdef CLASH_DETECTION
|
|
|
3192 if (!auto_saving)
|
|
|
3193 unlock_file (lockname);
|
|
|
3194 #endif /* CLASH_DETECTION */
|
|
|
3195
|
|
|
3196 /* Do this before reporting IO error
|
|
|
3197 to avoid a "file has changed on disk" warning on
|
|
|
3198 next attempt to save. */
|
|
|
3199 if (visiting)
|
|
|
3200 current_buffer->modtime = st.st_mtime;
|
|
|
3201
|
|
|
3202 if (failure)
|
|
151
|
3203 error ("IO error writing %s: %s",
|
|
|
3204 XSTRING_DATA (fn),
|
|
0
|
3205 strerror (save_errno));
|
|
|
3206
|
|
|
3207 if (visiting)
|
|
|
3208 {
|
|
|
3209 BUF_SAVE_MODIFF (current_buffer) = BUF_MODIFF (current_buffer);
|
|
|
3210 current_buffer->save_length = make_int (BUF_SIZE (current_buffer));
|
|
|
3211 current_buffer->filename = visit_file;
|
|
|
3212 MARK_MODELINE_CHANGED;
|
|
|
3213 }
|
|
|
3214 else if (quietly)
|
|
|
3215 {
|
|
|
3216 return Qnil;
|
|
|
3217 }
|
|
|
3218
|
|
|
3219 if (!auto_saving)
|
|
|
3220 {
|
|
|
3221 if (visiting_other)
|
|
16
|
3222 message ("Wrote %s", XSTRING_DATA (visit_file));
|
|
0
|
3223 else
|
|
|
3224 {
|
|
|
3225 struct gcpro gcpro1;
|
|
|
3226 Lisp_Object fsp;
|
|
|
3227 GCPRO1 (fn);
|
|
|
3228
|
|
|
3229 fsp = Ffile_symlink_p (fn);
|
|
|
3230 if (NILP (fsp))
|
|
16
|
3231 message ("Wrote %s", XSTRING_DATA (fn));
|
|
0
|
3232 else
|
|
151
|
3233 message ("Wrote %s (symlink to %s)",
|
|
16
|
3234 XSTRING_DATA (fn), XSTRING_DATA (fsp));
|
|
0
|
3235 UNGCPRO;
|
|
|
3236 }
|
|
|
3237 }
|
|
|
3238 return Qnil;
|
|
|
3239 }
|
|
|
3240
|
|
|
3241 /* #### This is such a load of shit!!!! There is no way we should define
|
|
|
3242 something so stupid as a subr, just sort the fucking list more
|
|
|
3243 intelligently. */
|
|
20
|
3244 DEFUN ("car-less-than-car", Fcar_less_than_car, 2, 2, 0, /*
|
|
0
|
3245 Return t if (car A) is numerically less than (car B).
|
|
20
|
3246 */
|
|
|
3247 (a, b))
|
|
0
|
3248 {
|
|
|
3249 return Flss (Fcar (a), Fcar (b));
|
|
|
3250 }
|
|
|
3251
|
|
|
3252 /* Heh heh heh, let's define this too, just to aggravate the person who
|
|
|
3253 wrote the above comment. */
|
|
20
|
3254 DEFUN ("cdr-less-than-cdr", Fcdr_less_than_cdr, 2, 2, 0, /*
|
|
0
|
3255 Return t if (cdr A) is numerically less than (cdr B).
|
|
20
|
3256 */
|
|
|
3257 (a, b))
|
|
0
|
3258 {
|
|
|
3259 return Flss (Fcdr (a), Fcdr (b));
|
|
|
3260 }
|
|
|
3261
|
|
|
3262 /* Build the complete list of annotations appropriate for writing out
|
|
|
3263 the text between START and END, by calling all the functions in
|
|
|
3264 write-region-annotate-functions and merging the lists they return.
|
|
|
3265 If one of these functions switches to a different buffer, we assume
|
|
|
3266 that buffer contains altered text. Therefore, the caller must
|
|
|
3267 make sure to restore the current buffer in all cases,
|
|
|
3268 as save-excursion would do. */
|
|
|
3269
|
|
|
3270 static Lisp_Object
|
|
|
3271 build_annotations (Lisp_Object start, Lisp_Object end)
|
|
|
3272 {
|
|
|
3273 /* This function can GC */
|
|
|
3274 Lisp_Object annotations;
|
|
|
3275 Lisp_Object p, res;
|
|
|
3276 struct gcpro gcpro1, gcpro2;
|
|
|
3277
|
|
|
3278 annotations = Qnil;
|
|
|
3279 p = Vwrite_region_annotate_functions;
|
|
|
3280 GCPRO2 (annotations, p);
|
|
|
3281 while (!NILP (p))
|
|
|
3282 {
|
|
|
3283 struct buffer *given_buffer = current_buffer;
|
|
|
3284 Vwrite_region_annotations_so_far = annotations;
|
|
|
3285 res = call2 (Fcar (p), start, end);
|
|
|
3286 /* If the function makes a different buffer current,
|
|
|
3287 assume that means this buffer contains altered text to be output.
|
|
|
3288 Reset START and END from the buffer bounds
|
|
|
3289 and discard all previous annotations because they should have
|
|
|
3290 been dealt with by this function. */
|
|
|
3291 if (current_buffer != given_buffer)
|
|
|
3292 {
|
|
|
3293 start = make_int (BUF_BEGV (current_buffer));
|
|
|
3294 end = make_int (BUF_ZV (current_buffer));
|
|
|
3295 annotations = Qnil;
|
|
|
3296 }
|
|
183
|
3297 Flength (res); /* Check basic validity of return value */
|
|
0
|
3298 annotations = merge (annotations, res, Qcar_less_than_car);
|
|
|
3299 p = Fcdr (p);
|
|
|
3300 }
|
|
|
3301
|
|
|
3302 /* Now do the same for annotation functions implied by the file-format */
|
|
|
3303 if (auto_saving && (!EQ (Vauto_save_file_format, Qt)))
|
|
|
3304 p = Vauto_save_file_format;
|
|
|
3305 else
|
|
|
3306 p = current_buffer->file_format;
|
|
|
3307 while (!NILP (p))
|
|
|
3308 {
|
|
|
3309 struct buffer *given_buffer = current_buffer;
|
|
|
3310 Vwrite_region_annotations_so_far = annotations;
|
|
|
3311 res = call3 (Qformat_annotate_function, Fcar (p), start, end);
|
|
|
3312 if (current_buffer != given_buffer)
|
|
|
3313 {
|
|
|
3314 start = make_int (BUF_BEGV (current_buffer));
|
|
|
3315 end = make_int (BUF_ZV (current_buffer));
|
|
|
3316 annotations = Qnil;
|
|
|
3317 }
|
|
183
|
3318 Flength (res);
|
|
0
|
3319 annotations = merge (annotations, res, Qcar_less_than_car);
|
|
|
3320 p = Fcdr (p);
|
|
|
3321 }
|
|
|
3322 UNGCPRO;
|
|
|
3323 return annotations;
|
|
|
3324 }
|
|
|
3325
|
|
|
3326 /* Write to stream OUTSTREAM the characters from INSTREAM (it is read until
|
|
|
3327 EOF is encountered), assuming they start at position POS in the buffer
|
|
|
3328 of string that STREAM refers to. Intersperse with them the annotations
|
|
|
3329 from *ANNOT that fall into the range of positions we are reading from,
|
|
|
3330 each at its appropriate position.
|
|
|
3331
|
|
|
3332 Modify *ANNOT by discarding elements as we output them.
|
|
|
3333 The return value is negative in case of system call failure. */
|
|
|
3334
|
|
|
3335 /* 4K should probably be fine. We just need to reduce the number of
|
|
|
3336 function calls to reasonable level. The Lstream stuff itself will
|
|
|
3337 batch to 64K to reduce the number of system calls. */
|
|
|
3338
|
|
|
3339 #define A_WRITE_BATCH_SIZE 4096
|
|
|
3340
|
|
|
3341 static int
|
|
|
3342 a_write (Lisp_Object outstream, Lisp_Object instream, int pos,
|
|
|
3343 Lisp_Object *annot)
|
|
|
3344 {
|
|
|
3345 Lisp_Object tem;
|
|
|
3346 int nextpos;
|
|
|
3347 unsigned char largebuf[A_WRITE_BATCH_SIZE];
|
|
|
3348 Lstream *instr = XLSTREAM (instream);
|
|
|
3349 Lstream *outstr = XLSTREAM (outstream);
|
|
|
3350
|
|
|
3351 while (NILP (*annot) || CONSP (*annot))
|
|
|
3352 {
|
|
|
3353 tem = Fcar_safe (Fcar (*annot));
|
|
|
3354 if (INTP (tem))
|
|
|
3355 nextpos = XINT (tem);
|
|
|
3356 else
|
|
|
3357 nextpos = INT_MAX;
|
|
70
|
3358 #ifdef MULE
|
|
|
3359 /* If there are annotations left and we have Mule, then we
|
|
|
3360 have to do the I/O one emchar at a time so we can
|
|
|
3361 determine when to insert the annotation. */
|
|
|
3362 if (!NILP (*annot))
|
|
|
3363 {
|
|
|
3364 Emchar ch;
|
|
|
3365 while (pos != nextpos && (ch = Lstream_get_emchar (instr)) != EOF)
|
|
|
3366 {
|
|
|
3367 if (Lstream_put_emchar (outstr, ch) < 0)
|
|
|
3368 return -1;
|
|
|
3369 pos++;
|
|
|
3370 }
|
|
|
3371 }
|
|
|
3372 else
|
|
183
|
3373 #endif /* MULE */
|
|
0
|
3374 {
|
|
|
3375 while (pos != nextpos)
|
|
|
3376 {
|
|
|
3377 /* Otherwise there is no point to that. Just go in batches. */
|
|
|
3378 int chunk = min (nextpos - pos, A_WRITE_BATCH_SIZE);
|
|
151
|
3379
|
|
0
|
3380 chunk = Lstream_read (instr, largebuf, chunk);
|
|
|
3381 if (chunk < 0)
|
|
|
3382 return -1;
|
|
|
3383 if (chunk == 0) /* EOF */
|
|
|
3384 break;
|
|
|
3385 if (Lstream_write (outstr, largebuf, chunk) < chunk)
|
|
|
3386 return -1;
|
|
|
3387 pos += chunk;
|
|
|
3388 }
|
|
|
3389 }
|
|
|
3390 if (pos == nextpos)
|
|
|
3391 {
|
|
|
3392 tem = Fcdr (Fcar (*annot));
|
|
|
3393 if (STRINGP (tem))
|
|
|
3394 {
|
|
16
|
3395 if (Lstream_write (outstr, XSTRING_DATA (tem),
|
|
|
3396 XSTRING_LENGTH (tem)) < 0)
|
|
0
|
3397 return -1;
|
|
|
3398 }
|
|
|
3399 *annot = Fcdr (*annot);
|
|
|
3400 }
|
|
|
3401 else
|
|
|
3402 return 0;
|
|
|
3403 }
|
|
|
3404 return -1;
|
|
|
3405 }
|
|
|
3406
|
|
|
3407
|
|
|
3408
|
|
|
3409 #if 0
|
|
|
3410 #include <des_crypt.h>
|
|
|
3411
|
|
|
3412 #define CRYPT_BLOCK_SIZE 8 /* bytes */
|
|
|
3413 #define CRYPT_KEY_SIZE 8 /* bytes */
|
|
|
3414
|
|
20
|
3415 DEFUN ("encrypt-string", Fencrypt_string, 2, 2, 0, /*
|
|
0
|
3416 Encrypt STRING using KEY.
|
|
20
|
3417 */
|
|
|
3418 (string, key))
|
|
0
|
3419 {
|
|
|
3420 char *encrypted_string, *raw_key;
|
|
|
3421 int rounded_size, extra, key_size;
|
|
|
3422
|
|
|
3423 /* !!#### May produce bogus data under Mule. */
|
|
|
3424 CHECK_STRING (string);
|
|
|
3425 CHECK_STRING (key);
|
|
|
3426
|
|
16
|
3427 extra = XSTRING_LENGTH (string) % CRYPT_BLOCK_SIZE;
|
|
|
3428 rounded_size = XSTRING_LENGTH (string) + extra;
|
|
0
|
3429 encrypted_string = alloca (rounded_size + 1);
|
|
16
|
3430 memcpy (encrypted_string, XSTRING_DATA (string), XSTRING_LENGTH (string));
|
|
0
|
3431 memset (encrypted_string + rounded_size - extra, 0, extra + 1);
|
|
|
3432
|
|
183
|
3433 key_size = min (CRYPT_KEY_SIZE, XSTRING_LENGTH (key))
|
|
0
|
3434
|
|
|
3435 raw_key = alloca (CRYPT_KEY_SIZE + 1);
|
|
16
|
3436 memcpy (raw_key, XSTRING_DATA (key), key_size);
|
|
0
|
3437 memset (raw_key + key_size, 0, (CRYPT_KEY_SIZE + 1) - key_size);
|
|
|
3438
|
|
183
|
3439 ecb_crypt (raw_key, encrypted_string, rounded_size,
|
|
|
3440 DES_ENCRYPT | DES_SW);
|
|
0
|
3441 return make_string (encrypted_string, rounded_size);
|
|
|
3442 }
|
|
|
3443
|
|
20
|
3444 DEFUN ("decrypt-string", Fdecrypt_string, 2, 2, 0, /*
|
|
0
|
3445 Decrypt STRING using KEY.
|
|
20
|
3446 */
|
|
|
3447 (string, key))
|
|
0
|
3448 {
|
|
|
3449 char *decrypted_string, *raw_key;
|
|
|
3450 int string_size, key_size;
|
|
|
3451
|
|
|
3452 CHECK_STRING (string);
|
|
|
3453 CHECK_STRING (key);
|
|
|
3454
|
|
16
|
3455 string_size = XSTRING_LENGTH (string) + 1;
|
|
0
|
3456 decrypted_string = alloca (string_size);
|
|
16
|
3457 memcpy (decrypted_string, XSTRING_DATA (string), string_size);
|
|
0
|
3458 decrypted_string[string_size - 1] = '\0';
|
|
|
3459
|
|
183
|
3460 key_size = min (CRYPT_KEY_SIZE, XSTRING_LENGTH (key))
|
|
0
|
3461
|
|
|
3462 raw_key = alloca (CRYPT_KEY_SIZE + 1);
|
|
16
|
3463 memcpy (raw_key, XSTRING_DATA (key), key_size);
|
|
0
|
3464 memset (raw_key + key_size, 0, (CRYPT_KEY_SIZE + 1) - key_size);
|
|
|
3465
|
|
|
3466
|
|
183
|
3467 ecb_crypt (raw_key, decrypted_string, string_size, D | DES_SW);
|
|
0
|
3468 return make_string (decrypted_string, string_size - 1);
|
|
|
3469 }
|
|
183
|
3470 #endif /* 0 */
|
|
0
|
3471
|
|
|
3472
|
|
20
|
3473 DEFUN ("verify-visited-file-modtime", Fverify_visited_file_modtime, 1, 1, 0, /*
|
|
0
|
3474 Return t if last mod time of BUF's visited file matches what BUF records.
|
|
|
3475 This means that the file has not been changed since it was visited or saved.
|
|
20
|
3476 */
|
|
|
3477 (buf))
|
|
0
|
3478 {
|
|
116
|
3479 /* This function can call lisp */
|
|
0
|
3480 struct buffer *b;
|
|
|
3481 struct stat st;
|
|
|
3482 Lisp_Object handler;
|
|
|
3483
|
|
|
3484 CHECK_BUFFER (buf);
|
|
|
3485 b = XBUFFER (buf);
|
|
|
3486
|
|
|
3487 if (!STRINGP (b->filename)) return Qt;
|
|
|
3488 if (b->modtime == 0) return Qt;
|
|
|
3489
|
|
|
3490 /* If the file name has special constructs in it,
|
|
|
3491 call the corresponding file handler. */
|
|
|
3492 handler = Ffind_file_name_handler (b->filename,
|
|
|
3493 Qverify_visited_file_modtime);
|
|
|
3494 if (!NILP (handler))
|
|
|
3495 return call2 (handler, Qverify_visited_file_modtime, buf);
|
|
|
3496
|
|
16
|
3497 if (stat ((char *) XSTRING_DATA (b->filename), &st) < 0)
|
|
0
|
3498 {
|
|
|
3499 /* If the file doesn't exist now and didn't exist before,
|
|
|
3500 we say that it isn't modified, provided the error is a tame one. */
|
|
|
3501 if (errno == ENOENT || errno == EACCES || errno == ENOTDIR)
|
|
|
3502 st.st_mtime = -1;
|
|
|
3503 else
|
|
|
3504 st.st_mtime = 0;
|
|
|
3505 }
|
|
|
3506 if (st.st_mtime == b->modtime
|
|
|
3507 /* If both are positive, accept them if they are off by one second. */
|
|
|
3508 || (st.st_mtime > 0 && b->modtime > 0
|
|
|
3509 && (st.st_mtime == b->modtime + 1
|
|
|
3510 || st.st_mtime == b->modtime - 1)))
|
|
|
3511 return Qt;
|
|
|
3512 return Qnil;
|
|
|
3513 }
|
|
|
3514
|
|
20
|
3515 DEFUN ("clear-visited-file-modtime", Fclear_visited_file_modtime, 0, 0, 0, /*
|
|
0
|
3516 Clear out records of last mod time of visited file.
|
|
|
3517 Next attempt to save will certainly not complain of a discrepancy.
|
|
20
|
3518 */
|
|
|
3519 ())
|
|
0
|
3520 {
|
|
|
3521 current_buffer->modtime = 0;
|
|
|
3522 return Qnil;
|
|
|
3523 }
|
|
|
3524
|
|
20
|
3525 DEFUN ("visited-file-modtime", Fvisited_file_modtime, 0, 0, 0, /*
|
|
0
|
3526 Return the current buffer's recorded visited file modification time.
|
|
|
3527 The value is a list of the form (HIGH . LOW), like the time values
|
|
|
3528 that `file-attributes' returns.
|
|
20
|
3529 */
|
|
|
3530 ())
|
|
0
|
3531 {
|
|
|
3532 return time_to_lisp ((time_t) current_buffer->modtime);
|
|
|
3533 }
|
|
|
3534
|
|
20
|
3535 DEFUN ("set-visited-file-modtime", Fset_visited_file_modtime, 0, 1, 0, /*
|
|
0
|
3536 Update buffer's recorded modification time from the visited file's time.
|
|
|
3537 Useful if the buffer was not read from the file normally
|
|
|
3538 or if the file itself has been changed for some known benign reason.
|
|
|
3539 An argument specifies the modification time value to use
|
|
|
3540 (instead of that of the visited file), in the form of a list
|
|
|
3541 (HIGH . LOW) or (HIGH LOW).
|
|
20
|
3542 */
|
|
|
3543 (time_list))
|
|
0
|
3544 {
|
|
116
|
3545 /* This function can call lisp */
|
|
0
|
3546 if (!NILP (time_list))
|
|
|
3547 {
|
|
|
3548 time_t the_time;
|
|
|
3549 lisp_to_time (time_list, &the_time);
|
|
|
3550 current_buffer->modtime = (int) the_time;
|
|
|
3551 }
|
|
|
3552 else
|
|
|
3553 {
|
|
|
3554 Lisp_Object filename;
|
|
|
3555 struct stat st;
|
|
|
3556 Lisp_Object handler;
|
|
114
|
3557 struct gcpro gcpro1, gcpro2, gcpro3;
|
|
151
|
3558
|
|
114
|
3559 GCPRO3 (filename, time_list, current_buffer->filename);
|
|
|
3560 filename = Fexpand_file_name (current_buffer->filename, Qnil);
|
|
0
|
3561
|
|
|
3562 /* If the file name has special constructs in it,
|
|
|
3563 call the corresponding file handler. */
|
|
|
3564 handler = Ffind_file_name_handler (filename, Qset_visited_file_modtime);
|
|
|
3565 UNGCPRO;
|
|
|
3566 if (!NILP (handler))
|
|
|
3567 /* The handler can find the file name the same way we did. */
|
|
|
3568 return call2 (handler, Qset_visited_file_modtime, Qnil);
|
|
16
|
3569 else if (stat ((char *) XSTRING_DATA (filename), &st) >= 0)
|
|
0
|
3570 current_buffer->modtime = st.st_mtime;
|
|
|
3571 }
|
|
|
3572
|
|
|
3573 return Qnil;
|
|
|
3574 }
|
|
|
3575
|
|
20
|
3576 DEFUN ("set-buffer-modtime", Fset_buffer_modtime, 1, 2, 0, /*
|
|
151
|
3577 Update BUFFER's recorded modification time from the associated
|
|
|
3578 file's modtime, if there is an associated file. If not, use the
|
|
0
|
3579 current time. In either case, if the optional arg TIME is supplied,
|
|
|
3580 it will be used if it is either an integer or a cons of two integers.
|
|
20
|
3581 */
|
|
|
3582 (buf, in_time))
|
|
0
|
3583 {
|
|
116
|
3584 /* This function can call lisp */
|
|
0
|
3585 unsigned long time_to_use = 0;
|
|
|
3586 int set_time_to_use = 0;
|
|
|
3587 struct stat st;
|
|
|
3588
|
|
|
3589 CHECK_BUFFER (buf);
|
|
|
3590
|
|
|
3591 if (!NILP (in_time))
|
|
|
3592 {
|
|
|
3593 if (INTP (in_time))
|
|
|
3594 {
|
|
|
3595 time_to_use = XINT (in_time);
|
|
|
3596 set_time_to_use = 1;
|
|
|
3597 }
|
|
|
3598 else if ((CONSP (in_time)) &&
|
|
151
|
3599 (INTP (Fcar (in_time))) &&
|
|
0
|
3600 (INTP (Fcdr (in_time))))
|
|
|
3601 {
|
|
|
3602 time_t the_time;
|
|
|
3603 lisp_to_time (in_time, &the_time);
|
|
|
3604 time_to_use = (unsigned long) the_time;
|
|
|
3605 set_time_to_use = 1;
|
|
|
3606 }
|
|
|
3607 }
|
|
|
3608
|
|
|
3609 if (!set_time_to_use)
|
|
|
3610 {
|
|
|
3611 Lisp_Object filename = Qnil;
|
|
114
|
3612 struct gcpro gcpro1;
|
|
|
3613 GCPRO1 (filename);
|
|
|
3614 /* #### dmoore - do we need to protect XBUFFER (buf)->filename?
|
|
|
3615 What if a ^(*&^&*^*& handler renames a buffer? I think I'm
|
|
|
3616 getting a headache now. */
|
|
0
|
3617
|
|
|
3618 if (STRINGP (XBUFFER (buf)->filename))
|
|
114
|
3619 filename = Fexpand_file_name (XBUFFER (buf)->filename, Qnil);
|
|
0
|
3620 else
|
|
|
3621 filename = Qnil;
|
|
|
3622
|
|
|
3623 if (!NILP (filename) && !NILP (Ffile_exists_p (filename)))
|
|
|
3624 {
|
|
|
3625 Lisp_Object handler;
|
|
|
3626
|
|
|
3627 /* If the file name has special constructs in it,
|
|
|
3628 call the corresponding file handler. */
|
|
|
3629 handler = Ffind_file_name_handler (filename, Qset_buffer_modtime);
|
|
|
3630 UNGCPRO;
|
|
|
3631 if (!NILP (handler))
|
|
|
3632 /* The handler can find the file name the same way we did. */
|
|
|
3633 return (call2 (handler, Qset_buffer_modtime, Qnil));
|
|
|
3634 else
|
|
|
3635 {
|
|
16
|
3636 if (stat ((char *) XSTRING_DATA (filename), &st) >= 0)
|
|
0
|
3637 time_to_use = st.st_mtime;
|
|
|
3638 else
|
|
|
3639 time_to_use = time ((time_t *) 0);
|
|
|
3640 }
|
|
|
3641 }
|
|
|
3642 else
|
|
114
|
3643 {
|
|
|
3644 UNGCPRO;
|
|
|
3645 time_to_use = time ((time_t *) 0);
|
|
|
3646 }
|
|
0
|
3647 }
|
|
|
3648
|
|
|
3649 XBUFFER (buf)->modtime = time_to_use;
|
|
151
|
3650
|
|
0
|
3651 return Qnil;
|
|
|
3652 }
|
|
|
3653
|
|
|
3654
|
|
|
3655 static Lisp_Object
|
|
|
3656 auto_save_error (Lisp_Object condition_object, Lisp_Object ignored)
|
|
|
3657 {
|
|
116
|
3658 /* This function can call lisp */
|
|
0
|
3659 if (gc_in_progress)
|
|
|
3660 return Qnil;
|
|
110
|
3661 /* Don't try printing an error message after everything is gone! */
|
|
|
3662 if (preparing_for_armageddon)
|
|
|
3663 return Qnil;
|
|
0
|
3664 clear_echo_area (selected_frame (), Qauto_saving, 1);
|
|
|
3665 Fding (Qt, Qauto_save_error, Qnil);
|
|
82
|
3666 message ("Auto-saving...error for %s", XSTRING_DATA (current_buffer->name));
|
|
0
|
3667 Fsleep_for (make_int (1));
|
|
82
|
3668 message ("Auto-saving...error!for %s", XSTRING_DATA (current_buffer->name));
|
|
0
|
3669 Fsleep_for (make_int (1));
|
|
82
|
3670 message ("Auto-saving...error for %s", XSTRING_DATA (current_buffer->name));
|
|
0
|
3671 Fsleep_for (make_int (1));
|
|
|
3672 return Qnil;
|
|
|
3673 }
|
|
|
3674
|
|
|
3675 static Lisp_Object
|
|
|
3676 auto_save_1 (Lisp_Object ignored)
|
|
|
3677 {
|
|
116
|
3678 /* This function can call lisp */
|
|
|
3679 /* #### I think caller is protecting current_buffer? */
|
|
0
|
3680 struct stat st;
|
|
|
3681 Lisp_Object fn = current_buffer->filename;
|
|
|
3682 Lisp_Object a = current_buffer->auto_save_file_name;
|
|
|
3683
|
|
|
3684 if (!STRINGP (a))
|
|
|
3685 return (Qnil);
|
|
|
3686
|
|
|
3687 /* Get visited file's mode to become the auto save file's mode. */
|
|
|
3688 if (STRINGP (fn) &&
|
|
16
|
3689 stat ((char *) XSTRING_DATA (fn), &st) >= 0)
|
|
0
|
3690 /* But make sure we can overwrite it later! */
|
|
|
3691 auto_save_mode_bits = st.st_mode | 0600;
|
|
|
3692 else
|
|
|
3693 /* default mode for auto-save files of buffers with no file is
|
|
|
3694 readable by owner only. This may annoy some small number of
|
|
|
3695 people, but the alternative removes all privacy from email. */
|
|
|
3696 auto_save_mode_bits = 0600;
|
|
|
3697
|
|
|
3698 return
|
|
70
|
3699 /* !!#### need to deal with this 'escape-quoted everywhere */
|
|
|
3700 Fwrite_region_internal (Qnil, Qnil, a, Qnil, Qlambda, Qnil,
|
|
|
3701 #ifdef MULE
|
|
|
3702 Qescape_quoted
|
|
|
3703 #else
|
|
|
3704 Qnil
|
|
|
3705 #endif
|
|
|
3706 );
|
|
44
|
3707 }
|
|
|
3708
|
|
116
|
3709 static Lisp_Object
|
|
|
3710 auto_save_expand_name_error (Lisp_Object condition_object, Lisp_Object ignored)
|
|
|
3711 {
|
|
|
3712 /* #### this function should spew an error message about not being
|
|
|
3713 able to open the .saves file. */
|
|
|
3714 return Qnil;
|
|
|
3715 }
|
|
|
3716
|
|
|
3717 static Lisp_Object
|
|
|
3718 auto_save_expand_name (Lisp_Object name)
|
|
|
3719 {
|
|
|
3720 struct gcpro gcpro1;
|
|
|
3721
|
|
|
3722 /* note that caller did NOT gc protect name, so we do it. */
|
|
|
3723 /* #### dmoore - this might not be neccessary, if condition_case_1
|
|
|
3724 protects it. but I don't think it does. */
|
|
|
3725 GCPRO1 (name);
|
|
|
3726 RETURN_UNGCPRO (Fexpand_file_name (name, Qnil));
|
|
|
3727 }
|
|
|
3728
|
|
0
|
3729
|
|
|
3730 static Lisp_Object
|
|
|
3731 do_auto_save_unwind (Lisp_Object fd)
|
|
|
3732 {
|
|
|
3733 close (XINT (fd));
|
|
|
3734 return (fd);
|
|
|
3735 }
|
|
|
3736
|
|
|
3737 static Lisp_Object
|
|
|
3738 do_auto_save_unwind_2 (Lisp_Object old_auto_saving)
|
|
|
3739 {
|
|
|
3740 auto_saving = XINT (old_auto_saving);
|
|
|
3741 return Qnil;
|
|
|
3742 }
|
|
|
3743
|
|
|
3744 /* Fdo_auto_save() checks whether a GC is in progress when it is called,
|
|
|
3745 and if so, tries to avoid touching lisp objects.
|
|
|
3746
|
|
|
3747 The only time that Fdo_auto_save() is called while GC is in progress
|
|
|
3748 is if we're going down, as a result of an abort() or a kill signal.
|
|
|
3749 It's fairly important that we generate autosave files in that case!
|
|
|
3750 */
|
|
|
3751
|
|
20
|
3752 DEFUN ("do-auto-save", Fdo_auto_save, 0, 2, "", /*
|
|
0
|
3753 Auto-save all buffers that need it.
|
|
|
3754 This is all buffers that have auto-saving enabled
|
|
|
3755 and are changed since last auto-saved.
|
|
|
3756 Auto-saving writes the buffer into a file
|
|
|
3757 so that your editing is not lost if the system crashes.
|
|
|
3758 This file is not the file you visited; that changes only when you save.
|
|
|
3759 Normally we run the normal hook `auto-save-hook' before saving.
|
|
|
3760
|
|
|
3761 Non-nil first argument means do not print any message if successful.
|
|
|
3762 Non-nil second argument means save only current buffer.
|
|
20
|
3763 */
|
|
|
3764 (no_message, current_only))
|
|
0
|
3765 {
|
|
116
|
3766 /* This function can call lisp */
|
|
110
|
3767 struct buffer *b;
|
|
0
|
3768 Lisp_Object tail, buf;
|
|
|
3769 int auto_saved = 0;
|
|
|
3770 int do_handled_files;
|
|
|
3771 Lisp_Object oquit = Qnil;
|
|
|
3772 Lisp_Object listfile = Qnil;
|
|
110
|
3773 Lisp_Object old;
|
|
0
|
3774 int listdesc = -1;
|
|
|
3775 int speccount = specpdl_depth ();
|
|
110
|
3776 struct gcpro gcpro1, gcpro2, gcpro3;
|
|
|
3777
|
|
|
3778 XSETBUFFER (old, current_buffer);
|
|
|
3779 GCPRO3 (oquit, listfile, old);
|
|
0
|
3780 check_quit (); /* make Vquit_flag accurate */
|
|
|
3781 /* Ordinarily don't quit within this function,
|
|
|
3782 but don't make it impossible to quit (in case we get hung in I/O). */
|
|
|
3783 oquit = Vquit_flag;
|
|
|
3784 Vquit_flag = Qnil;
|
|
|
3785
|
|
|
3786 /* No further GCPRO needed, because (when it matters) all Lisp_Object
|
|
|
3787 variables point to non-strings reached from Vbuffer_alist. */
|
|
|
3788
|
|
|
3789 if (minibuf_level != 0 || preparing_for_armageddon)
|
|
|
3790 no_message = Qt;
|
|
|
3791
|
|
|
3792 run_hook (Qauto_save_hook);
|
|
|
3793
|
|
|
3794 if (GC_STRINGP (Vauto_save_list_file_name))
|
|
116
|
3795 listfile = condition_case_1 (Qt,
|
|
|
3796 auto_save_expand_name,
|
|
|
3797 Vauto_save_list_file_name,
|
|
|
3798 auto_save_expand_name_error, Qnil);
|
|
0
|
3799
|
|
|
3800 /* Make sure auto_saving is reset. */
|
|
|
3801 record_unwind_protect (do_auto_save_unwind_2, make_int (auto_saving));
|
|
|
3802
|
|
|
3803 auto_saving = 1;
|
|
|
3804
|
|
|
3805 /* First, save all files which don't have handlers. If Emacs is
|
|
|
3806 crashing, the handlers may tweak what is causing Emacs to crash
|
|
|
3807 in the first place, and it would be a shame if Emacs failed to
|
|
|
3808 autosave perfectly ordinary files because it couldn't handle some
|
|
|
3809 ange-ftp'd file. */
|
|
|
3810 for (do_handled_files = 0; do_handled_files < 2; do_handled_files++)
|
|
|
3811 {
|
|
|
3812 for (tail = Vbuffer_alist;
|
|
|
3813 GC_CONSP (tail);
|
|
|
3814 tail = XCDR (tail))
|
|
|
3815 {
|
|
|
3816 buf = XCDR (XCAR (tail));
|
|
|
3817 b = XBUFFER (buf);
|
|
|
3818
|
|
|
3819 if (!GC_NILP (current_only)
|
|
|
3820 && b != current_buffer)
|
|
|
3821 continue;
|
|
151
|
3822
|
|
0
|
3823 /* Don't auto-save indirect buffers.
|
|
|
3824 The base buffer takes care of it. */
|
|
|
3825 if (b->base_buffer)
|
|
|
3826 continue;
|
|
|
3827
|
|
|
3828 /* Check for auto save enabled
|
|
|
3829 and file changed since last auto save
|
|
|
3830 and file changed since last real save. */
|
|
|
3831 if (GC_STRINGP (b->auto_save_file_name)
|
|
|
3832 && BUF_SAVE_MODIFF (b) < BUF_MODIFF (b)
|
|
|
3833 && b->auto_save_modified < BUF_MODIFF (b)
|
|
|
3834 /* -1 means we've turned off autosaving for a while--see below. */
|
|
|
3835 && XINT (b->save_length) >= 0
|
|
|
3836 && (do_handled_files
|
|
|
3837 || NILP (Ffind_file_name_handler (b->auto_save_file_name,
|
|
|
3838 Qwrite_region))))
|
|
|
3839 {
|
|
|
3840 EMACS_TIME before_time, after_time;
|
|
|
3841
|
|
|
3842 EMACS_GET_TIME (before_time);
|
|
|
3843 /* If we had a failure, don't try again for 20 minutes. */
|
|
|
3844 if (!preparing_for_armageddon
|
|
|
3845 && b->auto_save_failure_time >= 0
|
|
|
3846 && (EMACS_SECS (before_time) - b->auto_save_failure_time <
|
|
|
3847 1200))
|
|
|
3848 continue;
|
|
|
3849
|
|
|
3850 if (!preparing_for_armageddon &&
|
|
|
3851 (XINT (b->save_length) * 10
|
|
|
3852 > (BUF_Z (b) - BUF_BEG (b)) * 13)
|
|
|
3853 /* A short file is likely to change a large fraction;
|
|
|
3854 spare the user annoying messages. */
|
|
|
3855 && XINT (b->save_length) > 5000
|
|
|
3856 /* These messages are frequent and annoying for `*mail*'. */
|
|
|
3857 && !EQ (b->filename, Qnil)
|
|
|
3858 && NILP (no_message)
|
|
|
3859 && disable_auto_save_when_buffer_shrinks)
|
|
|
3860 {
|
|
|
3861 /* It has shrunk too much; turn off auto-saving here.
|
|
|
3862 Unless we're about to crash, in which case auto-save it
|
|
|
3863 anyway.
|
|
|
3864 */
|
|
|
3865 message
|
|
|
3866 ("Buffer %s has shrunk a lot; auto save turned off there",
|
|
16
|
3867 XSTRING_DATA (b->name));
|
|
0
|
3868 /* Turn off auto-saving until there's a real save,
|
|
|
3869 and prevent any more warnings. */
|
|
|
3870 b->save_length = make_int (-1);
|
|
|
3871 if (!gc_in_progress)
|
|
|
3872 Fsleep_for (make_int (1));
|
|
|
3873 continue;
|
|
|
3874 }
|
|
|
3875 set_buffer_internal (b);
|
|
|
3876 if (!auto_saved && GC_NILP (no_message))
|
|
|
3877 {
|
|
|
3878 static CONST unsigned char *msg
|
|
|
3879 = (CONST unsigned char *) "Auto-saving...";
|
|
|
3880 echo_area_message (selected_frame (), msg, Qnil,
|
|
|
3881 0, strlen ((CONST char *) msg),
|
|
|
3882 Qauto_saving);
|
|
|
3883 }
|
|
|
3884
|
|
|
3885 /* Open the auto-save list file, if necessary.
|
|
|
3886 We only do this now so that the file only exists
|
|
|
3887 if we actually auto-saved any files. */
|
|
|
3888 if (!auto_saved && GC_STRINGP (listfile) && listdesc < 0)
|
|
|
3889 {
|
|
|
3890 #ifdef DOS_NT
|
|
70
|
3891 listdesc = open ((char *) XSTRING_DATA (listfile),
|
|
167
|
3892 O_WRONLY | O_TRUNC | O_CREAT | O_BINARY,
|
|
0
|
3893 S_IREAD | S_IWRITE);
|
|
|
3894 #else /* not DOS_NT */
|
|
16
|
3895 listdesc = creat ((char *) XSTRING_DATA (listfile), 0666);
|
|
0
|
3896 #endif /* not DOS_NT */
|
|
|
3897
|
|
|
3898 /* Arrange to close that file whether or not we get
|
|
|
3899 an error. */
|
|
|
3900 if (listdesc >= 0)
|
|
|
3901 record_unwind_protect (do_auto_save_unwind,
|
|
|
3902 make_int (listdesc));
|
|
|
3903 }
|
|
|
3904
|
|
|
3905 /* Record all the buffers that we are auto-saving in
|
|
|
3906 the special file that lists them. For each of
|
|
|
3907 these buffers, record visited name (if any) and
|
|
|
3908 auto save name. */
|
|
|
3909 if (listdesc >= 0)
|
|
|
3910 {
|
|
|
3911 Extbyte *auto_save_file_name_ext;
|
|
|
3912 Extcount auto_save_file_name_ext_len;
|
|
151
|
3913
|
|
0
|
3914 GET_STRING_FILENAME_DATA_ALLOCA
|
|
|
3915 (b->auto_save_file_name,
|
|
|
3916 auto_save_file_name_ext,
|
|
|
3917 auto_save_file_name_ext_len);
|
|
|
3918 if (!NILP (b->filename))
|
|
|
3919 {
|
|
|
3920 Extbyte *filename_ext;
|
|
|
3921 Extcount filename_ext_len;
|
|
151
|
3922
|
|
0
|
3923 GET_STRING_FILENAME_DATA_ALLOCA (b->filename,
|
|
|
3924 filename_ext,
|
|
|
3925 filename_ext_len);
|
|
|
3926 write (listdesc, filename_ext, filename_ext_len);
|
|
|
3927 }
|
|
|
3928 write (listdesc, "\n", 1);
|
|
|
3929 write (listdesc, auto_save_file_name_ext,
|
|
|
3930 auto_save_file_name_ext_len);
|
|
|
3931 write (listdesc, "\n", 1);
|
|
|
3932 }
|
|
|
3933
|
|
110
|
3934 /* dmoore - In a bad scenario we've set b=XBUFFER(buf)
|
|
|
3935 based on values in Vbuffer_alist. auto_save_1 may
|
|
|
3936 cause lisp handlers to run. Those handlers may kill
|
|
|
3937 the buffer and then GC. Since the buffer is killed,
|
|
|
3938 it's no longer in Vbuffer_alist so it might get reaped
|
|
|
3939 by the GC. We also need to protect tail. */
|
|
|
3940 /* #### There is probably a lot of other code which has
|
|
|
3941 pointers into buffers which may get blown away by
|
|
|
3942 handlers. */
|
|
|
3943 {
|
|
169
|
3944 struct gcpro ngcpro1, ngcpro2;
|
|
|
3945 NGCPRO2 (buf, tail);
|
|
110
|
3946 condition_case_1 (Qt,
|
|
|
3947 auto_save_1, Qnil,
|
|
|
3948 auto_save_error, Qnil);
|
|
169
|
3949 NUNGCPRO;
|
|
110
|
3950 }
|
|
|
3951 /* Handler killed our saved current-buffer! Pick any. */
|
|
|
3952 if (!BUFFER_LIVE_P (XBUFFER (old)))
|
|
|
3953 XSETBUFFER (old, current_buffer);
|
|
|
3954
|
|
|
3955 set_buffer_internal (XBUFFER (old));
|
|
0
|
3956 auto_saved++;
|
|
151
|
3957
|
|
110
|
3958 /* Handler killed their own buffer! */
|
|
|
3959 if (!BUFFER_LIVE_P(b))
|
|
|
3960 continue;
|
|
|
3961
|
|
0
|
3962 b->auto_save_modified = BUF_MODIFF (b);
|
|
|
3963 b->save_length = make_int (BUF_SIZE (b));
|
|
|
3964 EMACS_GET_TIME (after_time);
|
|
|
3965 /* If auto-save took more than 60 seconds,
|
|
|
3966 assume it was an NFS failure that got a timeout. */
|
|
|
3967 if (EMACS_SECS (after_time) - EMACS_SECS (before_time) > 60)
|
|
|
3968 b->auto_save_failure_time = EMACS_SECS (after_time);
|
|
|
3969 }
|
|
|
3970 }
|
|
|
3971 }
|
|
|
3972
|
|
|
3973 /* Prevent another auto save till enough input events come in. */
|
|
|
3974 if (auto_saved)
|
|
|
3975 record_auto_save ();
|
|
|
3976
|
|
|
3977 /* If we didn't save anything into the listfile, remove the old
|
|
|
3978 one because nothing needed to be auto-saved. Do this afterwards
|
|
|
3979 rather than before in case we get a crash attempting to autosave
|
|
|
3980 (in that case we'd still want the old one around). */
|
|
|
3981 if (listdesc < 0 && !auto_saved && GC_STRINGP (listfile))
|
|
16
|
3982 unlink ((char *) XSTRING_DATA (listfile));
|
|
0
|
3983
|
|
|
3984 /* Show "...done" only if the echo area would otherwise be empty. */
|
|
|
3985 if (auto_saved && NILP (no_message)
|
|
|
3986 && NILP (clear_echo_area (selected_frame (), Qauto_saving, 0)))
|
|
|
3987 {
|
|
|
3988 static CONST unsigned char *msg
|
|
|
3989 = (CONST unsigned char *)"Auto-saving...done";
|
|
|
3990 echo_area_message (selected_frame (), msg, Qnil, 0,
|
|
|
3991 strlen ((CONST char *) msg), Qauto_saving);
|
|
|
3992 }
|
|
|
3993
|
|
|
3994 Vquit_flag = oquit;
|
|
|
3995
|
|
|
3996 RETURN_UNGCPRO (unbind_to (speccount, Qnil));
|
|
|
3997 }
|
|
|
3998
|
|
20
|
3999 DEFUN ("set-buffer-auto-saved", Fset_buffer_auto_saved, 0, 0, 0, /*
|
|
0
|
4000 Mark current buffer as auto-saved with its current text.
|
|
|
4001 No auto-save file will be written until the buffer changes again.
|
|
20
|
4002 */
|
|
|
4003 ())
|
|
0
|
4004 {
|
|
|
4005 current_buffer->auto_save_modified = BUF_MODIFF (current_buffer);
|
|
|
4006 current_buffer->save_length = make_int (BUF_SIZE (current_buffer));
|
|
|
4007 current_buffer->auto_save_failure_time = -1;
|
|
|
4008 return Qnil;
|
|
|
4009 }
|
|
|
4010
|
|
20
|
4011 DEFUN ("clear-buffer-auto-save-failure", Fclear_buffer_auto_save_failure, 0, 0, 0, /*
|
|
0
|
4012 Clear any record of a recent auto-save failure in the current buffer.
|
|
20
|
4013 */
|
|
|
4014 ())
|
|
0
|
4015 {
|
|
|
4016 current_buffer->auto_save_failure_time = -1;
|
|
|
4017 return Qnil;
|
|
|
4018 }
|
|
|
4019
|
|
20
|
4020 DEFUN ("recent-auto-save-p", Frecent_auto_save_p, 0, 0, 0, /*
|
|
0
|
4021 Return t if buffer has been auto-saved since last read in or saved.
|
|
20
|
4022 */
|
|
|
4023 ())
|
|
0
|
4024 {
|
|
|
4025 return (BUF_SAVE_MODIFF (current_buffer) <
|
|
|
4026 current_buffer->auto_save_modified) ? Qt : Qnil;
|
|
|
4027 }
|
|
|
4028
|
|
|
4029
|
|
|
4030 /************************************************************************/
|
|
|
4031 /* initialization */
|
|
|
4032 /************************************************************************/
|
|
|
4033
|
|
|
4034 void
|
|
|
4035 syms_of_fileio (void)
|
|
|
4036 {
|
|
|
4037 defsymbol (&Qexpand_file_name, "expand-file-name");
|
|
|
4038 defsymbol (&Qfile_truename, "file-truename");
|
|
|
4039 defsymbol (&Qsubstitute_in_file_name, "substitute-in-file-name");
|
|
|
4040 defsymbol (&Qdirectory_file_name, "directory-file-name");
|
|
|
4041 defsymbol (&Qfile_name_directory, "file-name-directory");
|
|
|
4042 defsymbol (&Qfile_name_nondirectory, "file-name-nondirectory");
|
|
|
4043 defsymbol (&Qunhandled_file_name_directory, "unhandled-file-name-directory");
|
|
|
4044 defsymbol (&Qfile_name_as_directory, "file-name-as-directory");
|
|
|
4045 defsymbol (&Qcopy_file, "copy-file");
|
|
|
4046 defsymbol (&Qmake_directory_internal, "make-directory-internal");
|
|
|
4047 defsymbol (&Qdelete_directory, "delete-directory");
|
|
|
4048 defsymbol (&Qdelete_file, "delete-file");
|
|
|
4049 defsymbol (&Qrename_file, "rename-file");
|
|
|
4050 defsymbol (&Qadd_name_to_file, "add-name-to-file");
|
|
|
4051 defsymbol (&Qmake_symbolic_link, "make-symbolic-link");
|
|
|
4052 defsymbol (&Qfile_exists_p, "file-exists-p");
|
|
|
4053 defsymbol (&Qfile_executable_p, "file-executable-p");
|
|
|
4054 defsymbol (&Qfile_readable_p, "file-readable-p");
|
|
|
4055 defsymbol (&Qfile_symlink_p, "file-symlink-p");
|
|
|
4056 defsymbol (&Qfile_writable_p, "file-writable-p");
|
|
|
4057 defsymbol (&Qfile_directory_p, "file-directory-p");
|
|
|
4058 defsymbol (&Qfile_regular_p, "file-regular-p");
|
|
|
4059 defsymbol (&Qfile_accessible_directory_p, "file-accessible-directory-p");
|
|
|
4060 defsymbol (&Qfile_modes, "file-modes");
|
|
|
4061 defsymbol (&Qset_file_modes, "set-file-modes");
|
|
|
4062 defsymbol (&Qfile_newer_than_file_p, "file-newer-than-file-p");
|
|
|
4063 defsymbol (&Qinsert_file_contents, "insert-file-contents");
|
|
|
4064 defsymbol (&Qwrite_region, "write-region");
|
|
|
4065 defsymbol (&Qverify_visited_file_modtime, "verify-visited-file-modtime");
|
|
|
4066 defsymbol (&Qset_visited_file_modtime, "set-visited-file-modtime");
|
|
|
4067 defsymbol (&Qset_buffer_modtime, "set-buffer-modtime");
|
|
|
4068 #ifdef DOS_NT
|
|
|
4069 defsymbol (&Qfind_buffer_file_type, "find-buffer-file-type");
|
|
|
4070 #endif /* DOS_NT */
|
|
|
4071 defsymbol (&Qcar_less_than_car, "car-less-than-car"); /* Vomitous! */
|
|
|
4072
|
|
|
4073 defsymbol (&Qfile_name_handler_alist, "file-name-handler-alist");
|
|
|
4074 defsymbol (&Qauto_save_hook, "auto-save-hook");
|
|
|
4075 defsymbol (&Qauto_save_error, "auto-save-error");
|
|
|
4076 defsymbol (&Qauto_saving, "auto-saving");
|
|
|
4077
|
|
|
4078 defsymbol (&Qformat_decode, "format-decode");
|
|
|
4079 defsymbol (&Qformat_annotate_function, "format-annotate-function");
|
|
|
4080
|
|
|
4081 defsymbol (&Qcompute_buffer_file_truename, "compute-buffer-file-truename");
|
|
|
4082 deferror (&Qfile_error, "file-error", "File error", Qio_error);
|
|
|
4083 deferror (&Qfile_already_exists, "file-already-exists",
|
|
|
4084 "File already exists", Qfile_error);
|
|
|
4085
|
|
20
|
4086 DEFSUBR (Ffind_file_name_handler);
|
|
|
4087
|
|
|
4088 DEFSUBR (Ffile_name_directory);
|
|
|
4089 DEFSUBR (Ffile_name_nondirectory);
|
|
|
4090 DEFSUBR (Funhandled_file_name_directory);
|
|
|
4091 DEFSUBR (Ffile_name_as_directory);
|
|
|
4092 DEFSUBR (Fdirectory_file_name);
|
|
|
4093 DEFSUBR (Fmake_temp_name);
|
|
|
4094 DEFSUBR (Fexpand_file_name);
|
|
|
4095 DEFSUBR (Ffile_truename);
|
|
|
4096 DEFSUBR (Fsubstitute_in_file_name);
|
|
|
4097 DEFSUBR (Fcopy_file);
|
|
|
4098 DEFSUBR (Fmake_directory_internal);
|
|
|
4099 DEFSUBR (Fdelete_directory);
|
|
|
4100 DEFSUBR (Fdelete_file);
|
|
|
4101 DEFSUBR (Frename_file);
|
|
|
4102 DEFSUBR (Fadd_name_to_file);
|
|
0
|
4103 #ifdef S_IFLNK
|
|
20
|
4104 DEFSUBR (Fmake_symbolic_link);
|
|
0
|
4105 #endif /* S_IFLNK */
|
|
|
4106 #ifdef HPUX_NET
|
|
20
|
4107 DEFSUBR (Fsysnetunam);
|
|
0
|
4108 #endif /* HPUX_NET */
|
|
20
|
4109 DEFSUBR (Ffile_name_absolute_p);
|
|
|
4110 DEFSUBR (Ffile_exists_p);
|
|
|
4111 DEFSUBR (Ffile_executable_p);
|
|
|
4112 DEFSUBR (Ffile_readable_p);
|
|
|
4113 DEFSUBR (Ffile_writable_p);
|
|
|
4114 DEFSUBR (Ffile_symlink_p);
|
|
|
4115 DEFSUBR (Ffile_directory_p);
|
|
|
4116 DEFSUBR (Ffile_accessible_directory_p);
|
|
|
4117 DEFSUBR (Ffile_regular_p);
|
|
|
4118 DEFSUBR (Ffile_modes);
|
|
|
4119 DEFSUBR (Fset_file_modes);
|
|
|
4120 DEFSUBR (Fset_default_file_modes);
|
|
|
4121 DEFSUBR (Fdefault_file_modes);
|
|
|
4122 DEFSUBR (Funix_sync);
|
|
|
4123 DEFSUBR (Ffile_newer_than_file_p);
|
|
|
4124 DEFSUBR (Finsert_file_contents_internal);
|
|
|
4125 DEFSUBR (Fwrite_region_internal);
|
|
|
4126 DEFSUBR (Fcar_less_than_car); /* Vomitous! */
|
|
|
4127 DEFSUBR (Fcdr_less_than_cdr); /* Yeah oh yeah bucko .... */
|
|
0
|
4128 #if 0
|
|
20
|
4129 DEFSUBR (Fencrypt_string);
|
|
|
4130 DEFSUBR (Fdecrypt_string);
|
|
0
|
4131 #endif
|
|
20
|
4132 DEFSUBR (Fverify_visited_file_modtime);
|
|
|
4133 DEFSUBR (Fclear_visited_file_modtime);
|
|
|
4134 DEFSUBR (Fvisited_file_modtime);
|
|
|
4135 DEFSUBR (Fset_visited_file_modtime);
|
|
|
4136 DEFSUBR (Fset_buffer_modtime);
|
|
|
4137
|
|
|
4138 DEFSUBR (Fdo_auto_save);
|
|
|
4139 DEFSUBR (Fset_buffer_auto_saved);
|
|
|
4140 DEFSUBR (Fclear_buffer_auto_save_failure);
|
|
|
4141 DEFSUBR (Frecent_auto_save_p);
|
|
0
|
4142 }
|
|
|
4143
|
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4144 void
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4145 vars_of_fileio (void)
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4146 {
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4147 DEFVAR_LISP ("auto-save-file-format", &Vauto_save_file_format /*
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4148 *Format in which to write auto-save files.
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4149 Should be a list of symbols naming formats that are defined in `format-alist'.
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4150 If it is t, which is the default, auto-save files are written in the
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4151 same format as a regular save would use.
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4152 */ );
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4153 Vauto_save_file_format = Qt;
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4154
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4155 DEFVAR_LISP ("file-name-handler-alist", &Vfile_name_handler_alist /*
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4156 *Alist of elements (REGEXP . HANDLER) for file names handled specially.
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4157 If a file name matches REGEXP, then all I/O on that file is done by calling
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4158 HANDLER.
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4159
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4160 The first argument given to HANDLER is the name of the I/O primitive
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4161 to be handled; the remaining arguments are the arguments that were
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4162 passed to that primitive. For example, if you do
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4163 (file-exists-p FILENAME)
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4164 and FILENAME is handled by HANDLER, then HANDLER is called like this:
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4165 (funcall HANDLER 'file-exists-p FILENAME)
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4166 The function `find-file-name-handler' checks this list for a handler
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4167 for its argument.
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4168 */ );
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4169 Vfile_name_handler_alist = Qnil;
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4170
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4171 DEFVAR_LISP ("after-insert-file-functions", &Vafter_insert_file_functions /*
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4172 A list of functions to be called at the end of `insert-file-contents'.
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4173 Each is passed one argument, the number of bytes inserted. It should return
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4174 the new byte count, and leave point the same. If `insert-file-contents' is
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4175 intercepted by a handler from `file-name-handler-alist', that handler is
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4176 responsible for calling the after-insert-file-functions if appropriate.
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4177 */ );
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4178 Vafter_insert_file_functions = Qnil;
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4179
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4180 DEFVAR_LISP ("write-region-annotate-functions",
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4181 &Vwrite_region_annotate_functions /*
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4182 A list of functions to be called at the start of `write-region'.
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183
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4183 Each is passed two arguments, START and END, as for `write-region'.
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0
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4184 It should return a list of pairs (POSITION . STRING) of strings to be
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4185 effectively inserted at the specified positions of the file being written
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4186 \(1 means to insert before the first byte written). The POSITIONs must be
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4187 sorted into increasing order. If there are several functions in the list,
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4188 the several lists are merged destructively.
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4189 */ );
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4190 Vwrite_region_annotate_functions = Qnil;
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4191
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4192 DEFVAR_LISP ("write-region-annotations-so-far",
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4193 &Vwrite_region_annotations_so_far /*
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4194 When an annotation function is called, this holds the previous annotations.
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4195 These are the annotations made by other annotation functions
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4196 that were already called. See also `write-region-annotate-functions'.
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4197 */ );
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4198 Vwrite_region_annotations_so_far = Qnil;
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4199
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4200 DEFVAR_LISP ("inhibit-file-name-handlers", &Vinhibit_file_name_handlers /*
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4201 A list of file name handlers that temporarily should not be used.
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4202 This applies only to the operation `inhibit-file-name-operation'.
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4203 */ );
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4204 Vinhibit_file_name_handlers = Qnil;
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4205
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4206 DEFVAR_LISP ("inhibit-file-name-operation", &Vinhibit_file_name_operation /*
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4207 The operation for which `inhibit-file-name-handlers' is applicable.
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4208 */ );
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4209 Vinhibit_file_name_operation = Qnil;
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4210
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4211 DEFVAR_LISP ("auto-save-list-file-name", &Vauto_save_list_file_name /*
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4212 File name in which we write a list of all auto save file names.
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4213 */ );
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4214 Vauto_save_list_file_name = Qnil;
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4215
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4216 DEFVAR_BOOL ("disable-auto-save-when-buffer-shrinks",
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4217 &disable_auto_save_when_buffer_shrinks /*
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4218 If non-nil, auto-saving is disabled when a buffer shrinks too much.
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4219 This is to prevent you from losing your edits if you accidentally
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4220 delete a large chunk of the buffer and don't notice it until too late.
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4221 Saving the buffer normally turns auto-save back on.
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4222 */ );
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4223 disable_auto_save_when_buffer_shrinks = 1;
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4224 }
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