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0
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1 /* File IO for XEmacs.
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2 Copyright (C) 1985-1988, 1992-1995 Free Software Foundation, Inc.
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3 Copyright (C) 1996 Ben Wing.
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4
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5 This file is part of XEmacs.
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6
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7 XEmacs is free software; you can redistribute it and/or modify it
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8 under the terms of the GNU General Public License as published by the
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9 Free Software Foundation; either version 2, or (at your option) any
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10 later version.
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11
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12 XEmacs is distributed in the hope that it will be useful, but WITHOUT
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13 ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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14 FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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15 for more details.
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16
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17 You should have received a copy of the GNU General Public License
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18 along with XEmacs; see the file COPYING. If not, write to
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19 the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
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20 Boston, MA 02111-1307, USA. */
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21
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22 /* Synched up with: Mule 2.0, FSF 19.30. */
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23
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24 #include <config.h>
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25 #include "lisp.h"
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26
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27 #include "buffer.h"
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28 #include "events.h"
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29 #include "frame.h"
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30 #include "insdel.h"
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31 #include "lstream.h"
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32 #include "redisplay.h"
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33 #include "sysdep.h"
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34 #include "window.h" /* minibuf_level */
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70
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35 #ifdef MULE
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36 #include "mule-coding.h"
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37 #endif
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0
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38
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2
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39 #ifdef HAVE_LIBGEN_H /* Must come before sysfile.h */
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40 #include <libgen.h>
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41 #endif
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0
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42 #include "sysfile.h"
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43 #include "sysproc.h"
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44 #include "syspwd.h"
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45 #include "systime.h"
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46 #include "sysdir.h"
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47
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48 #ifdef HPUX
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49 #include <netio.h>
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50 #ifdef HPUX_PRE_8_0
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51 #include <errnet.h>
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52 #endif
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53 #endif
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54
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55 /* Nonzero during writing of auto-save files */
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56 static int auto_saving;
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57
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58 /* Set by auto_save_1 to mode of original file so Fwrite_region_internal
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59 will create a new file with the same mode as the original */
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60 static int auto_save_mode_bits;
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61
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62 /* Alist of elements (REGEXP . HANDLER) for file names
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63 whose I/O is done with a special handler. */
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64 Lisp_Object Vfile_name_handler_alist;
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65
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66 /* Format for auto-save files */
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67 Lisp_Object Vauto_save_file_format;
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68
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69 /* Lisp functions for translating file formats */
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70 Lisp_Object Qformat_decode, Qformat_annotate_function;
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71
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72 /* Functions to be called to process text properties in inserted file. */
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73 Lisp_Object Vafter_insert_file_functions;
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74
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75 /* Functions to be called to create text property annotations for file. */
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76 Lisp_Object Vwrite_region_annotate_functions;
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77
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78 /* During build_annotations, each time an annotation function is called,
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79 this holds the annotations made by the previous functions. */
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80 Lisp_Object Vwrite_region_annotations_so_far;
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81
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82 /* File name in which we write a list of all our auto save files. */
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83 Lisp_Object Vauto_save_list_file_name;
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84
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85 /* On VMS, nonzero means write new files with record format stmlf.
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86 Zero means use var format. */
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87 int vms_stmlf_recfm;
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88
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89 int disable_auto_save_when_buffer_shrinks;
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90
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91 Lisp_Object Qfile_name_handler_alist;
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92
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93 /* These variables describe handlers that have "already" had a chance
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94 to handle the current operation.
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95
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96 Vinhibit_file_name_handlers is a list of file name handlers.
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97 Vinhibit_file_name_operation is the operation being handled.
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98 If we try to handle that operation, we ignore those handlers. */
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99
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100 static Lisp_Object Vinhibit_file_name_handlers;
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101 static Lisp_Object Vinhibit_file_name_operation;
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102
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103 Lisp_Object Qfile_error, Qfile_already_exists;
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104
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105 Lisp_Object Qauto_save_hook;
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106 Lisp_Object Qauto_save_error;
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107 Lisp_Object Qauto_saving;
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108
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109 Lisp_Object Qcar_less_than_car;
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110
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111 Lisp_Object Qcompute_buffer_file_truename;
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112
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113 /* signal a file error when errno contains a meaningful value. */
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114
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115 DOESNT_RETURN
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116 report_file_error (CONST char *string, Lisp_Object data)
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117 {
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114
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118 /* #### dmoore - This uses current_buffer, better make sure no one
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119 has GC'd the current buffer. File handlers are giving me a headache
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120 maybe I'll just always protect current_buffer around all of those
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121 calls. */
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122
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0
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123 /* mrb: #### Needs to be fixed at a lower level; errstring needs to
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124 be MULEized. The following at least prevents a crash... */
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125 Lisp_Object errstring = build_ext_string (strerror (errno), FORMAT_BINARY);
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126
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127 /* System error messages are capitalized. Downcase the initial
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128 unless it is followed by a slash. */
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70
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129 if (string_char (XSTRING (errstring), 1) != '/')
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0
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130 set_string_char (XSTRING (errstring), 0,
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131 DOWNCASE (current_buffer,
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132 string_char (XSTRING (errstring), 0)));
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133
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134 signal_error (Qfile_error,
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135 Fcons (build_translated_string (string),
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136 Fcons (errstring, data)));
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137 }
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138
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139 void
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140 maybe_report_file_error (CONST char *string, Lisp_Object data,
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141 Lisp_Object class, Error_behavior errb)
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142 {
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143 Lisp_Object errstring;
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144
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145 /* Optimization: */
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146 if (ERRB_EQ (errb, ERROR_ME_NOT))
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147 return;
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148
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149 errstring = build_string (strerror (errno));
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150
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151 /* System error messages are capitalized. Downcase the initial
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152 unless it is followed by a slash. */
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153 if (string_char (XSTRING (errstring), 1) != '/')
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154 set_string_char (XSTRING (errstring), 0,
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155 DOWNCASE (current_buffer,
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156 string_char (XSTRING (errstring), 0)));
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157
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158 maybe_signal_error (Qfile_error,
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159 Fcons (build_translated_string (string),
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160 Fcons (errstring, data)),
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161 class, errb);
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162 }
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163
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164 /* signal a file error when errno does not contain a meaningful value. */
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165
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166 DOESNT_RETURN
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167 signal_file_error (CONST char *string, Lisp_Object data)
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168 {
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169 signal_error (Qfile_error,
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170 list2 (build_translated_string (string), data));
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171 }
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172
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173 void
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174 maybe_signal_file_error (CONST char *string, Lisp_Object data,
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175 Lisp_Object class, Error_behavior errb)
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176 {
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177 /* Optimization: */
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178 if (ERRB_EQ (errb, ERROR_ME_NOT))
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179 return;
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180 maybe_signal_error (Qfile_error,
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181 list2 (build_translated_string (string), data),
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182 class, errb);
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183 }
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184
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185 DOESNT_RETURN
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186 signal_double_file_error (CONST char *string1, CONST char *string2,
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187 Lisp_Object data)
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188 {
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189 signal_error (Qfile_error,
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190 list3 (build_translated_string (string1),
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191 build_translated_string (string2),
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192 data));
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193 }
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194
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195 void
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196 maybe_signal_double_file_error (CONST char *string1, CONST char *string2,
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197 Lisp_Object data, Lisp_Object class,
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198 Error_behavior errb)
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199 {
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200 /* Optimization: */
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201 if (ERRB_EQ (errb, ERROR_ME_NOT))
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202 return;
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203 maybe_signal_error (Qfile_error,
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204 list3 (build_translated_string (string1),
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205 build_translated_string (string2),
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206 data),
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207 class, errb);
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208 }
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209
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210 DOESNT_RETURN
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211 signal_double_file_error_2 (CONST char *string1, CONST char *string2,
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212 Lisp_Object data1, Lisp_Object data2)
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213 {
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214 signal_error (Qfile_error,
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215 list4 (build_translated_string (string1),
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216 build_translated_string (string2),
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217 data1, data2));
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218 }
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219
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220 void
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221 maybe_signal_double_file_error_2 (CONST char *string1, CONST char *string2,
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222 Lisp_Object data1, Lisp_Object data2,
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223 Lisp_Object class, Error_behavior errb)
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224 {
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225 /* Optimization: */
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226 if (ERRB_EQ (errb, ERROR_ME_NOT))
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227 return;
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228 maybe_signal_error (Qfile_error,
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229 list4 (build_translated_string (string1),
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230 build_translated_string (string2),
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231 data1, data2),
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232 class, errb);
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233 }
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234
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235 static Lisp_Object
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236 close_file_unwind (Lisp_Object fd)
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237 {
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238 if (CONSP (fd))
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239 {
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240 if (INTP (XCAR (fd)))
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241 close (XINT (XCAR (fd)));
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242
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243 free_cons (XCONS (fd));
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244 }
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245 else
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246 close (XINT (fd));
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247
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248 return Qnil;
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249 }
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250
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251 static Lisp_Object
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252 close_stream_unwind (Lisp_Object stream)
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253 {
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254 Lstream_close (XLSTREAM (stream));
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255 return Qnil;
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256 }
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257
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258 /* Restore point, having saved it as a marker. */
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259
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260 static Lisp_Object
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261 restore_point_unwind (Lisp_Object point_marker)
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262 {
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263 BUF_SET_PT (current_buffer, marker_position (point_marker));
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264 return (Fset_marker (point_marker, Qnil, Qnil));
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265 }
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266
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267 /* Versions of read() and write() that allow quitting out of the actual
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268 I/O. We don't use immediate_quit (i.e. direct longjmp() out of the
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269 signal handler) because that's way too losing.
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270
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271 (#### Actually, longjmp()ing out of the signal handler may not be
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272 as losing as I thought. See sys_do_signal() in sysdep.c.)
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273
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274 Solaris include files declare the return value as ssize_t.
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275 Is that standard? */
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276 int
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277 read_allowing_quit (int fildes, void *buf, unsigned int nbyte)
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278 {
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279 int nread;
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280 QUIT;
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281
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282 nread = sys_read_1 (fildes, buf, nbyte, 1);
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283 return nread;
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284 }
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285
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286 int
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287 write_allowing_quit (int fildes, CONST void *buf, unsigned int nbyte)
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288 {
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289 int nread;
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290
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291 QUIT;
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292 nread = sys_write_1 (fildes, buf, nbyte, 1);
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293 return nread;
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294 }
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295
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296
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297 Lisp_Object Qexpand_file_name;
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298 Lisp_Object Qfile_truename;
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299 Lisp_Object Qsubstitute_in_file_name;
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300 Lisp_Object Qdirectory_file_name;
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301 Lisp_Object Qfile_name_directory;
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302 Lisp_Object Qfile_name_nondirectory;
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303 Lisp_Object Qunhandled_file_name_directory;
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304 Lisp_Object Qfile_name_as_directory;
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305 Lisp_Object Qcopy_file;
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306 Lisp_Object Qmake_directory_internal;
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307 Lisp_Object Qdelete_directory;
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308 Lisp_Object Qdelete_file;
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309 Lisp_Object Qrename_file;
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310 Lisp_Object Qadd_name_to_file;
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311 Lisp_Object Qmake_symbolic_link;
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312 Lisp_Object Qfile_exists_p;
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313 Lisp_Object Qfile_executable_p;
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314 Lisp_Object Qfile_readable_p;
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315 Lisp_Object Qfile_symlink_p;
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316 Lisp_Object Qfile_writable_p;
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317 Lisp_Object Qfile_directory_p;
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318 Lisp_Object Qfile_regular_p;
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319 Lisp_Object Qfile_accessible_directory_p;
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320 Lisp_Object Qfile_modes;
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321 Lisp_Object Qset_file_modes;
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322 Lisp_Object Qfile_newer_than_file_p;
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323 Lisp_Object Qinsert_file_contents;
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324 Lisp_Object Qwrite_region;
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325 Lisp_Object Qverify_visited_file_modtime;
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326 Lisp_Object Qset_visited_file_modtime;
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327 Lisp_Object Qset_buffer_modtime;
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328
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329 /* If FILENAME is handled specially on account of its syntax,
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330 return its handler function. Otherwise, return nil. */
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331
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20
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332 DEFUN ("find-file-name-handler", Ffind_file_name_handler, 1, 2, 0, /*
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0
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333 Return FILENAME's handler function for OPERATION, if it has one.
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334 Otherwise, return nil.
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335 A file name is handled if one of the regular expressions in
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336 `file-name-handler-alist' matches it.
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337
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338 If OPERATION equals `inhibit-file-name-operation', then we ignore
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339 any handlers that are members of `inhibit-file-name-handlers',
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340 but we still do run any other handlers. This lets handlers
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341 use the standard functions without calling themselves recursively.
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20
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342 */
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343 (filename, operation))
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0
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344 {
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116
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345 /* This function does not GC */
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0
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346 /* This function must not munge the match data. */
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347 Lisp_Object chain, inhibited_handlers;
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348
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349 CHECK_STRING (filename);
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350
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351 if (EQ (operation, Vinhibit_file_name_operation))
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352 inhibited_handlers = Vinhibit_file_name_handlers;
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353 else
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354 inhibited_handlers = Qnil;
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355
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356 for (chain = Vfile_name_handler_alist; CONSP (chain);
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357 chain = XCDR (chain))
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358 {
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359 Lisp_Object elt = XCAR (chain);
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360 if (CONSP (elt))
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361 {
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362 Lisp_Object string;
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363 string = XCAR (elt);
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364 if (STRINGP (string)
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365 && (fast_lisp_string_match (string, filename) >= 0))
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366 {
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367 Lisp_Object handler = XCDR (elt);
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368 if (NILP (Fmemq (handler, inhibited_handlers)))
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369 return (handler);
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370 }
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371 }
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372 QUIT;
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373 }
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374 return Qnil;
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375 }
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376
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377 static Lisp_Object
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378 call2_check_string (Lisp_Object fn, Lisp_Object arg0, Lisp_Object arg1)
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379 {
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116
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380 /* This function can call lisp */
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0
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381 Lisp_Object result = call2 (fn, arg0, arg1);
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382 CHECK_STRING (result);
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383 return (result);
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384 }
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385
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386 static Lisp_Object
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114
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387 call2_check_string_or_nil (Lisp_Object fn, Lisp_Object arg0, Lisp_Object arg1)
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388 {
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116
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389 /* This function can call lisp */
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114
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390 Lisp_Object result = call2 (fn, arg0, arg1);
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391 if (!NILP (result))
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392 CHECK_STRING (result);
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393 return (result);
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394 }
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395
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396 static Lisp_Object
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0
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397 call3_check_string (Lisp_Object fn, Lisp_Object arg0,
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398 Lisp_Object arg1, Lisp_Object arg2)
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399 {
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116
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400 /* This function can call lisp */
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0
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401 Lisp_Object result = call3 (fn, arg0, arg1, arg2);
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402 CHECK_STRING (result);
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403 return (result);
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404 }
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405
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406
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20
|
407 DEFUN ("file-name-directory", Ffile_name_directory, 1, 1, 0, /*
|
|
0
|
408 Return the directory component in file name NAME.
|
|
|
409 Return nil if NAME does not include a directory.
|
|
|
410 Otherwise return a directory spec.
|
|
|
411 Given a Unix syntax file name, returns a string ending in slash;
|
|
|
412 on VMS, perhaps instead a string ending in `:', `]' or `>'.
|
|
20
|
413 */
|
|
|
414 (file))
|
|
0
|
415 {
|
|
116
|
416 /* This function can call lisp */
|
|
0
|
417 Bufbyte *beg;
|
|
|
418 Bufbyte *p;
|
|
|
419 Lisp_Object handler;
|
|
|
420
|
|
|
421 CHECK_STRING (file);
|
|
|
422
|
|
|
423 /* If the file name has special constructs in it,
|
|
|
424 call the corresponding file handler. */
|
|
|
425 handler = Ffind_file_name_handler (file, Qfile_name_directory);
|
|
|
426 if (!NILP (handler))
|
|
114
|
427 return (call2_check_string_or_nil (handler, Qfile_name_directory,
|
|
|
428 file));
|
|
0
|
429
|
|
|
430 #ifdef FILE_SYSTEM_CASE
|
|
|
431 file = FILE_SYSTEM_CASE (file);
|
|
|
432 #endif
|
|
16
|
433 beg = XSTRING_DATA (file);
|
|
|
434 p = beg + XSTRING_LENGTH (file);
|
|
0
|
435
|
|
|
436 while (p != beg && !IS_ANY_SEP (p[-1])
|
|
|
437 #ifdef VMS
|
|
|
438 && p[-1] != ':' && p[-1] != ']' && p[-1] != '>'
|
|
|
439 #endif /* VMS */
|
|
|
440 ) p--;
|
|
|
441
|
|
|
442 if (p == beg)
|
|
|
443 return Qnil;
|
|
|
444 #ifdef DOS_NT
|
|
|
445 /* Expansion of "c:" to drive and default directory. */
|
|
|
446 /* (NT does the right thing.) */
|
|
|
447 if (p == beg + 2 && beg[1] == ':')
|
|
|
448 {
|
|
|
449 int drive = (*beg) - 'a';
|
|
|
450 /* MAXPATHLEN+1 is guaranteed to be enough space for getdefdir. */
|
|
|
451 Bufbyte *res = (Bufbyte *) alloca (MAXPATHLEN + 5);
|
|
|
452 unsigned char *res1;
|
|
|
453 #ifdef WINDOWSNT
|
|
|
454 res1 = res;
|
|
|
455 /* The NT version places the drive letter at the beginning already. */
|
|
|
456 #else /* not WINDOWSNT */
|
|
|
457 /* On MSDOG we must put the drive letter in by hand. */
|
|
|
458 res1 = res + 2;
|
|
|
459 #endif /* not WINDOWSNT */
|
|
|
460 if (getdefdir (drive + 1, res))
|
|
|
461 {
|
|
|
462 #ifdef MSDOS
|
|
|
463 res[0] = drive + 'a';
|
|
|
464 res[1] = ':';
|
|
|
465 #endif /* MSDOS */
|
|
|
466 if (IS_DIRECTORY_SEP (res[strlen ((char *) res) - 1]))
|
|
|
467 strcat ((char *) res, "/");
|
|
|
468 beg = res;
|
|
|
469 p = beg + strlen ((char *) beg);
|
|
|
470 }
|
|
|
471 }
|
|
|
472 #endif /* DOS_NT */
|
|
|
473 return make_string (beg, p - beg);
|
|
|
474 }
|
|
|
475
|
|
20
|
476 DEFUN ("file-name-nondirectory", Ffile_name_nondirectory, 1, 1, 0, /*
|
|
0
|
477 Return file name NAME sans its directory.
|
|
|
478 For example, in a Unix-syntax file name,
|
|
|
479 this is everything after the last slash,
|
|
|
480 or the entire name if it contains no slash.
|
|
20
|
481 */
|
|
|
482 (file))
|
|
0
|
483 {
|
|
116
|
484 /* This function can call lisp */
|
|
0
|
485 Bufbyte *beg, *p, *end;
|
|
|
486 Lisp_Object handler;
|
|
|
487
|
|
|
488 CHECK_STRING (file);
|
|
|
489
|
|
|
490 /* If the file name has special constructs in it,
|
|
|
491 call the corresponding file handler. */
|
|
|
492 handler = Ffind_file_name_handler (file, Qfile_name_nondirectory);
|
|
|
493 if (!NILP (handler))
|
|
|
494 return (call2_check_string (handler, Qfile_name_nondirectory,
|
|
|
495 file));
|
|
|
496
|
|
16
|
497 beg = XSTRING_DATA (file);
|
|
|
498 end = p = beg + XSTRING_LENGTH (file);
|
|
0
|
499
|
|
|
500 while (p != beg && !IS_ANY_SEP (p[-1])
|
|
|
501 #ifdef VMS
|
|
|
502 && p[-1] != ':' && p[-1] != ']' && p[-1] != '>'
|
|
|
503 #endif /* VMS */
|
|
|
504 ) p--;
|
|
|
505
|
|
|
506 return make_string (p, end - p);
|
|
|
507 }
|
|
|
508
|
|
20
|
509 DEFUN ("unhandled-file-name-directory", Funhandled_file_name_directory, 1, 1, 0, /*
|
|
0
|
510 Return a directly usable directory name somehow associated with FILENAME.
|
|
|
511 A `directly usable' directory name is one that may be used without the
|
|
|
512 intervention of any file handler.
|
|
|
513 If FILENAME is a directly usable file itself, return
|
|
|
514 (file-name-directory FILENAME).
|
|
|
515 The `call-process' and `start-process' functions use this function to
|
|
|
516 get a current directory to run processes in.
|
|
20
|
517 */
|
|
70
|
518 (filename))
|
|
0
|
519 {
|
|
116
|
520 /* This function can call lisp */
|
|
0
|
521 Lisp_Object handler;
|
|
|
522
|
|
|
523 /* If the file name has special constructs in it,
|
|
|
524 call the corresponding file handler. */
|
|
|
525 handler = Ffind_file_name_handler (filename, Qunhandled_file_name_directory);
|
|
|
526 if (!NILP (handler))
|
|
|
527 return call2 (handler, Qunhandled_file_name_directory,
|
|
|
528 filename);
|
|
|
529
|
|
|
530 return Ffile_name_directory (filename);
|
|
|
531 }
|
|
|
532
|
|
|
533
|
|
|
534 static char *
|
|
|
535 file_name_as_directory (char *out, char *in)
|
|
|
536 {
|
|
|
537 int size = strlen (in) - 1;
|
|
|
538
|
|
|
539 strcpy (out, in);
|
|
|
540
|
|
|
541 #ifdef VMS
|
|
|
542 /* Is it already a directory string? */
|
|
|
543 if (in[size] == ':' || in[size] == ']' || in[size] == '>')
|
|
|
544 return out;
|
|
|
545 /* Is it a VMS directory file name? If so, hack VMS syntax. */
|
|
|
546 else if (! strchr (in, '/')
|
|
|
547 && ((size > 3 && ! strcmp (&in[size - 3], ".DIR"))
|
|
|
548 || (size > 3 && ! strcmp (&in[size - 3], ".dir"))
|
|
|
549 || (size > 5 && (! strncmp (&in[size - 5], ".DIR", 4)
|
|
|
550 || ! strncmp (&in[size - 5], ".dir", 4))
|
|
|
551 && (in[size - 1] == '.' || in[size - 1] == ';')
|
|
|
552 && in[size] == '1')))
|
|
|
553 {
|
|
|
554 char *p, *dot;
|
|
|
555 char brack;
|
|
|
556
|
|
|
557 /* x.dir -> [.x]
|
|
|
558 dir:x.dir --> dir:[x]
|
|
|
559 dir:[x]y.dir --> dir:[x.y] */
|
|
|
560 p = in + size;
|
|
|
561 while (p != in && *p != ':' && *p != '>' && *p != ']') p--;
|
|
|
562 if (p != in)
|
|
|
563 {
|
|
|
564 strncpy (out, in, p - in);
|
|
|
565 out[p - in] = '\0';
|
|
|
566 if (*p == ':')
|
|
|
567 {
|
|
|
568 brack = ']';
|
|
|
569 strcat (out, ":[");
|
|
|
570 }
|
|
|
571 else
|
|
|
572 {
|
|
|
573 brack = *p;
|
|
|
574 strcat (out, ".");
|
|
|
575 }
|
|
|
576 p++;
|
|
|
577 }
|
|
|
578 else
|
|
|
579 {
|
|
|
580 brack = ']';
|
|
|
581 strcpy (out, "[.");
|
|
|
582 }
|
|
|
583 dot = strchr (p, '.');
|
|
|
584 if (dot)
|
|
|
585 {
|
|
|
586 /* blindly remove any extension */
|
|
|
587 size = strlen (out) + (dot - p);
|
|
|
588 strncat (out, p, dot - p);
|
|
|
589 }
|
|
|
590 else
|
|
|
591 {
|
|
|
592 strcat (out, p);
|
|
|
593 size = strlen (out);
|
|
|
594 }
|
|
|
595 out[size++] = brack;
|
|
|
596 out[size] = '\0';
|
|
|
597 }
|
|
|
598 #else /* not VMS */
|
|
|
599 /* For Unix syntax, Append a slash if necessary */
|
|
|
600 if (!IS_ANY_SEP (out[size]))
|
|
|
601 {
|
|
|
602 out[size + 1] = DIRECTORY_SEP;
|
|
|
603 out[size + 2] = '\0';
|
|
|
604 }
|
|
|
605 #endif /* not VMS */
|
|
|
606 return out;
|
|
|
607 }
|
|
|
608
|
|
20
|
609 DEFUN ("file-name-as-directory", Ffile_name_as_directory, 1, 1, 0, /*
|
|
0
|
610 Return a string representing file FILENAME interpreted as a directory.
|
|
|
611 This operation exists because a directory is also a file, but its name as
|
|
|
612 a directory is different from its name as a file.
|
|
|
613 The result can be used as the value of `default-directory'
|
|
|
614 or passed as second argument to `expand-file-name'.
|
|
|
615 For a Unix-syntax file name, just appends a slash.
|
|
|
616 On VMS, converts \"[X]FOO.DIR\" to \"[X.FOO]\", etc.
|
|
20
|
617 */
|
|
|
618 (file))
|
|
0
|
619 {
|
|
116
|
620 /* This function can call lisp */
|
|
0
|
621 char *buf;
|
|
|
622 Lisp_Object handler;
|
|
|
623
|
|
|
624 CHECK_STRING (file);
|
|
|
625
|
|
|
626 /* If the file name has special constructs in it,
|
|
|
627 call the corresponding file handler. */
|
|
|
628 handler = Ffind_file_name_handler (file, Qfile_name_as_directory);
|
|
|
629 if (!NILP (handler))
|
|
|
630 return (call2_check_string (handler, Qfile_name_as_directory,
|
|
|
631 file));
|
|
|
632
|
|
16
|
633 buf = (char *) alloca (XSTRING_LENGTH (file) + 10);
|
|
0
|
634 return build_string (file_name_as_directory
|
|
16
|
635 (buf, (char *) XSTRING_DATA (file)));
|
|
0
|
636 }
|
|
|
637
|
|
|
638 /*
|
|
|
639 * Convert from directory name to filename.
|
|
|
640 * On VMS:
|
|
|
641 * xyzzy:[mukesh.emacs] => xyzzy:[mukesh]emacs.dir.1
|
|
|
642 * xyzzy:[mukesh] => xyzzy:[000000]mukesh.dir.1
|
|
|
643 * On UNIX, it's simple: just make sure there is a terminating /
|
|
|
644
|
|
|
645 * Value is nonzero if the string output is different from the input.
|
|
|
646 */
|
|
|
647
|
|
|
648 static int
|
|
|
649 directory_file_name (CONST char *src, char *dst)
|
|
|
650 {
|
|
|
651 long slen;
|
|
|
652 #ifdef VMS
|
|
|
653 long rlen;
|
|
|
654 char * ptr, * rptr;
|
|
|
655 char bracket;
|
|
|
656 struct FAB fab = cc$rms_fab;
|
|
|
657 struct NAM nam = cc$rms_nam;
|
|
|
658 char esa[NAM$C_MAXRSS];
|
|
|
659 #endif /* VMS */
|
|
|
660
|
|
|
661 slen = strlen (src);
|
|
|
662 #ifdef VMS
|
|
|
663 if (! strchr (src, '/')
|
|
|
664 && (src[slen - 1] == ']'
|
|
|
665 || src[slen - 1] == ':'
|
|
|
666 || src[slen - 1] == '>'))
|
|
|
667 {
|
|
|
668 /* VMS style - convert [x.y.z] to [x.y]z, [x] to [000000]x */
|
|
|
669 fab.fab$l_fna = src;
|
|
|
670 fab.fab$b_fns = slen;
|
|
|
671 fab.fab$l_nam = &nam;
|
|
|
672 fab.fab$l_fop = FAB$M_NAM;
|
|
|
673
|
|
|
674 nam.nam$l_esa = esa;
|
|
|
675 nam.nam$b_ess = sizeof esa;
|
|
|
676 nam.nam$b_nop |= NAM$M_SYNCHK;
|
|
|
677
|
|
|
678 /* We call SYS$PARSE to handle such things as [--] for us. */
|
|
|
679 if (SYS$PARSE(&fab, 0, 0) == RMS$_NORMAL)
|
|
|
680 {
|
|
|
681 slen = nam.nam$b_esl;
|
|
|
682 if (esa[slen - 1] == ';' && esa[slen - 2] == '.')
|
|
|
683 slen -= 2;
|
|
|
684 esa[slen] = '\0';
|
|
|
685 src = esa;
|
|
|
686 }
|
|
|
687 if (src[slen - 1] != ']' && src[slen - 1] != '>')
|
|
|
688 {
|
|
|
689 /* what about when we have logical_name:???? */
|
|
|
690 if (src[slen - 1] == ':')
|
|
|
691 { /* Xlate logical name and see what we get */
|
|
|
692 ptr = strcpy (dst, src); /* upper case for getenv */
|
|
|
693 while (*ptr)
|
|
|
694 {
|
|
|
695 *ptr = toupper ((unsigned char) *ptr);
|
|
|
696 ptr++;
|
|
|
697 }
|
|
|
698 dst[slen - 1] = 0; /* remove colon */
|
|
|
699 if (!(src = egetenv (dst)))
|
|
|
700 return 0;
|
|
|
701 /* should we jump to the beginning of this procedure?
|
|
|
702 Good points: allows us to use logical names that xlate
|
|
|
703 to Unix names,
|
|
|
704 Bad points: can be a problem if we just translated to a device
|
|
|
705 name...
|
|
|
706 For now, I'll punt and always expect VMS names, and hope for
|
|
|
707 the best! */
|
|
|
708 slen = strlen (src);
|
|
|
709 if (src[slen - 1] != ']' && src[slen - 1] != '>')
|
|
|
710 { /* no recursion here! */
|
|
|
711 strcpy (dst, src);
|
|
|
712 return 0;
|
|
|
713 }
|
|
|
714 }
|
|
|
715 else
|
|
|
716 { /* not a directory spec */
|
|
|
717 strcpy (dst, src);
|
|
|
718 return 0;
|
|
|
719 }
|
|
|
720 }
|
|
|
721 bracket = src[slen - 1];
|
|
|
722
|
|
|
723 /* If bracket is ']' or '>', bracket - 2 is the corresponding
|
|
|
724 opening bracket. */
|
|
|
725 ptr = strchr (src, bracket - 2);
|
|
|
726 if (ptr == 0)
|
|
|
727 { /* no opening bracket */
|
|
|
728 strcpy (dst, src);
|
|
|
729 return 0;
|
|
|
730 }
|
|
|
731 if (!(rptr = strrchr (src, '.')))
|
|
|
732 rptr = ptr;
|
|
|
733 slen = rptr - src;
|
|
|
734 strncpy (dst, src, slen);
|
|
|
735 dst[slen] = '\0';
|
|
|
736 if (*rptr == '.')
|
|
|
737 {
|
|
|
738 dst[slen++] = bracket;
|
|
|
739 dst[slen] = '\0';
|
|
|
740 }
|
|
|
741 else
|
|
|
742 {
|
|
|
743 /* If we have the top-level of a rooted directory (i.e. xx:[000000]),
|
|
|
744 then translate the device and recurse. */
|
|
|
745 if (dst[slen - 1] == ':'
|
|
|
746 && dst[slen - 2] != ':' /* skip decnet nodes */
|
|
|
747 && strcmp(src + slen, "[000000]") == 0)
|
|
|
748 {
|
|
|
749 dst[slen - 1] = '\0';
|
|
|
750 if ((ptr = egetenv (dst))
|
|
|
751 && (rlen = strlen (ptr) - 1) > 0
|
|
|
752 && (ptr[rlen] == ']' || ptr[rlen] == '>')
|
|
|
753 && ptr[rlen - 1] == '.')
|
|
|
754 {
|
|
|
755 char * buf = (char *) alloca (strlen (ptr) + 1);
|
|
|
756 strcpy (buf, ptr);
|
|
|
757 buf[rlen - 1] = ']';
|
|
|
758 buf[rlen] = '\0';
|
|
|
759 return directory_file_name (buf, dst);
|
|
|
760 }
|
|
|
761 else
|
|
|
762 dst[slen - 1] = ':';
|
|
|
763 }
|
|
|
764 strcat (dst, "[000000]");
|
|
|
765 slen += 8;
|
|
|
766 }
|
|
|
767 rptr++;
|
|
|
768 rlen = strlen (rptr) - 1;
|
|
|
769 strncat (dst, rptr, rlen);
|
|
|
770 dst[slen + rlen] = '\0';
|
|
|
771 strcat (dst, ".DIR.1");
|
|
|
772 return 1;
|
|
|
773 }
|
|
|
774 #endif /* VMS */
|
|
|
775 /* Process as Unix format: just remove any final slash.
|
|
|
776 But leave "/" unchanged; do not change it to "". */
|
|
|
777 strcpy (dst, src);
|
|
|
778 #ifdef APOLLO
|
|
|
779 /* Handle // as root for apollo's. */
|
|
|
780 if ((slen > 2 && dst[slen - 1] == '/')
|
|
|
781 || (slen > 1 && dst[0] != '/' && dst[slen - 1] == '/'))
|
|
|
782 dst[slen - 1] = 0;
|
|
|
783 #else
|
|
|
784 if (slen > 1
|
|
|
785 && IS_DIRECTORY_SEP (dst[slen - 1])
|
|
|
786 #ifdef DOS_NT
|
|
|
787 && !IS_ANY_SEP (dst[slen - 2])
|
|
|
788 #endif
|
|
|
789 )
|
|
|
790 dst[slen - 1] = 0;
|
|
|
791 #endif
|
|
|
792 return 1;
|
|
|
793 }
|
|
|
794
|
|
20
|
795 DEFUN ("directory-file-name", Fdirectory_file_name, 1, 1, 0, /*
|
|
0
|
796 Return the file name of the directory named DIR.
|
|
|
797 This is the name of the file that holds the data for the directory DIR.
|
|
|
798 This operation exists because a directory is also a file, but its name as
|
|
|
799 a directory is different from its name as a file.
|
|
|
800 In Unix-syntax, this function just removes the final slash.
|
|
|
801 On VMS, given a VMS-syntax directory name such as \"[X.Y]\",
|
|
|
802 it returns a file name such as \"[X]Y.DIR.1\".
|
|
20
|
803 */
|
|
|
804 (directory))
|
|
0
|
805 {
|
|
116
|
806 /* This function can call lisp */
|
|
0
|
807 char *buf;
|
|
|
808 Lisp_Object handler;
|
|
|
809
|
|
|
810 CHECK_STRING (directory);
|
|
|
811
|
|
|
812 #if 0 /* #### WTF? */
|
|
|
813 if (NILP (directory))
|
|
|
814 return Qnil;
|
|
|
815 #endif
|
|
|
816
|
|
|
817 /* If the file name has special constructs in it,
|
|
|
818 call the corresponding file handler. */
|
|
|
819 handler = Ffind_file_name_handler (directory, Qdirectory_file_name);
|
|
|
820 if (!NILP (handler))
|
|
|
821 return (call2_check_string (handler, Qdirectory_file_name,
|
|
|
822 directory));
|
|
|
823 #ifdef VMS
|
|
|
824 /* 20 extra chars is insufficient for VMS, since we might perform a
|
|
|
825 logical name translation. an equivalence string can be up to 255
|
|
|
826 chars long, so grab that much extra space... - sss */
|
|
16
|
827 buf = (char *) alloca (XSTRING_LENGTH (directory) + 20 + 255);
|
|
0
|
828 #else
|
|
16
|
829 buf = (char *) alloca (XSTRING_LENGTH (directory) + 20);
|
|
0
|
830 #endif
|
|
16
|
831 directory_file_name ((char *) XSTRING_DATA (directory), buf);
|
|
0
|
832 return build_string (buf);
|
|
|
833 }
|
|
|
834
|
|
20
|
835 DEFUN ("make-temp-name", Fmake_temp_name, 1, 1, 0, /*
|
|
0
|
836 Generate temporary file name (string) starting with PREFIX (a string).
|
|
|
837 The Emacs process number forms part of the result,
|
|
|
838 so there is no danger of generating a name being used by another process.
|
|
20
|
839 */
|
|
|
840 (prefix))
|
|
0
|
841 {
|
|
|
842 CONST char suffix[] = "XXXXXX";
|
|
|
843 Bufbyte *data;
|
|
|
844 Bytecount len;
|
|
|
845 Lisp_Object val;
|
|
|
846
|
|
|
847 CHECK_STRING (prefix);
|
|
16
|
848 len = XSTRING_LENGTH (prefix);
|
|
0
|
849 val = make_uninit_string (len + countof (suffix) - 1);
|
|
16
|
850 data = XSTRING_DATA (val);
|
|
|
851 memcpy (data, XSTRING_DATA (prefix), len);
|
|
0
|
852 memcpy (data + len, suffix, countof (suffix));
|
|
|
853 /* !!#### does mktemp() Mule-encapsulate? */
|
|
|
854 mktemp ((char *) data);
|
|
|
855
|
|
|
856 return val;
|
|
|
857 }
|
|
|
858
|
|
20
|
859 DEFUN ("expand-file-name", Fexpand_file_name, 1, 2, 0, /*
|
|
0
|
860 Convert FILENAME to absolute, and canonicalize it.
|
|
|
861 Second arg DEFAULT is directory to start with if FILENAME is relative
|
|
|
862 (does not start with slash); if DEFAULT is nil or missing,
|
|
|
863 the current buffer's value of default-directory is used.
|
|
|
864 Path components that are `.' are removed, and
|
|
|
865 path components followed by `..' are removed, along with the `..' itself;
|
|
|
866 note that these simplifications are done without checking the resulting
|
|
|
867 paths in the file system.
|
|
|
868 An initial `~/' expands to your home directory.
|
|
|
869 An initial `~USER/' expands to USER's home directory.
|
|
|
870 See also the function `substitute-in-file-name'.
|
|
20
|
871 */
|
|
|
872 (name, defalt))
|
|
0
|
873 {
|
|
116
|
874 /* This function can call lisp */
|
|
0
|
875 Bufbyte *nm;
|
|
|
876
|
|
|
877 Bufbyte *newdir, *p, *o;
|
|
|
878 int tlen;
|
|
|
879 Bufbyte *target;
|
|
|
880 struct passwd *pw;
|
|
|
881 #ifdef VMS
|
|
|
882 Bufbyte * colon = 0;
|
|
|
883 Bufbyte * close = 0;
|
|
|
884 Bufbyte * slash = 0;
|
|
|
885 Bufbyte * brack = 0;
|
|
|
886 int lbrack = 0, rbrack = 0;
|
|
|
887 int dots = 0;
|
|
|
888 #endif /* VMS */
|
|
|
889 #ifdef DOS_NT
|
|
|
890 /* Demacs 1.1.2 91/10/20 Manabu Higashida */
|
|
|
891 int drive = -1;
|
|
|
892 int relpath = 0;
|
|
|
893 Bufbyte *tmp, *defdir;
|
|
|
894 #endif /* DOS_NT */
|
|
|
895 Lisp_Object handler;
|
|
114
|
896 struct gcpro gcpro1;
|
|
0
|
897
|
|
|
898 CHECK_STRING (name);
|
|
|
899
|
|
|
900 /* If the file name has special constructs in it,
|
|
|
901 call the corresponding file handler. */
|
|
|
902 handler = Ffind_file_name_handler (name, Qexpand_file_name);
|
|
|
903 if (!NILP (handler))
|
|
|
904 return (call3_check_string (handler, Qexpand_file_name, name,
|
|
|
905 defalt));
|
|
|
906
|
|
|
907 /* Use the buffer's default-directory if DEFALT is omitted. */
|
|
|
908 if (NILP (defalt))
|
|
|
909 defalt = current_buffer->directory;
|
|
|
910 if (NILP (defalt)) /* this should be a meaningful error */
|
|
|
911 {
|
|
|
912 /* #### If we had a minibuffer-only frame up then current_buffer
|
|
|
913 is likely to not have a directory setting. We should
|
|
|
914 probably redo things to make sure that current_buffer stays
|
|
|
915 set to something sensible. */
|
|
|
916 if (!preparing_for_armageddon)
|
|
|
917 signal_simple_error ("default-directory is not set",
|
|
|
918 make_buffer (current_buffer));
|
|
|
919 }
|
|
|
920 else
|
|
|
921 CHECK_STRING (defalt);
|
|
|
922
|
|
|
923 if (!NILP (defalt))
|
|
|
924 {
|
|
114
|
925 struct gcpro gcpro1;
|
|
|
926
|
|
|
927 GCPRO1 (defalt); /* might be current_buffer->directory */
|
|
0
|
928 handler = Ffind_file_name_handler (defalt, Qexpand_file_name);
|
|
114
|
929 UNGCPRO;
|
|
0
|
930 if (!NILP (handler))
|
|
|
931 return call3 (handler, Qexpand_file_name, name, defalt);
|
|
|
932 }
|
|
|
933
|
|
|
934 /* Make sure DEFALT is properly expanded.
|
|
|
935 It would be better to do this down below where we actually use
|
|
|
936 defalt. Unfortunately, calling Fexpand_file_name recursively
|
|
|
937 could invoke GC, and the strings might be relocated. This would
|
|
|
938 be annoying because we have pointers into strings lying around
|
|
|
939 that would need adjusting, and people would add new pointers to
|
|
|
940 the code and forget to adjust them, resulting in intermittent bugs.
|
|
|
941 Putting this call here avoids all that crud.
|
|
|
942
|
|
|
943 The EQ test avoids infinite recursion. */
|
|
116
|
944 if (! NILP(defalt) && !EQ (defalt, name)
|
|
0
|
945 /* This saves time in a common case. */
|
|
16
|
946 && ! (XSTRING_LENGTH (defalt) >= 3
|
|
116
|
947 && (IS_DIRECTORY_SEP (XSTRING_BYTE (defalt, 0))
|
|
|
948 || IS_DEVICE_SEP (XSTRING_BYTE (defalt, 1)))))
|
|
0
|
949 {
|
|
|
950 struct gcpro gcpro1;
|
|
|
951
|
|
114
|
952 GCPRO1 (defalt); /* may be current_buffer->directory */
|
|
0
|
953 defalt = Fexpand_file_name (defalt, Qnil);
|
|
|
954 UNGCPRO;
|
|
|
955 }
|
|
|
956
|
|
|
957 #ifdef VMS
|
|
|
958 /* Filenames on VMS are always upper case. */
|
|
|
959 name = Fupcase (name, Fcurrent_buffer ());
|
|
|
960 #endif
|
|
|
961 #ifdef FILE_SYSTEM_CASE
|
|
|
962 name = FILE_SYSTEM_CASE (name);
|
|
|
963 #endif
|
|
|
964
|
|
114
|
965 /* #### dmoore - this is ugly, clean this up. Looks like nm
|
|
|
966 pointing into name should be safe during all of this, though. */
|
|
16
|
967 nm = XSTRING_DATA (name);
|
|
0
|
968
|
|
|
969 #ifdef MSDOS
|
|
|
970 /* First map all backslashes to slashes. */
|
|
|
971 dostounix_filename (nm = strcpy (alloca (strlen (nm) + 1), nm));
|
|
|
972 #endif
|
|
|
973
|
|
|
974 #ifdef DOS_NT
|
|
|
975 /* Now strip drive name. */
|
|
|
976 {
|
|
|
977 Bufbyte *colon = strrchr (nm, ':');
|
|
|
978 if (colon)
|
|
|
979 if (nm == colon)
|
|
|
980 nm++;
|
|
|
981 else
|
|
|
982 {
|
|
|
983 drive = colon[-1];
|
|
|
984 nm = colon + 1;
|
|
|
985 if (!IS_DIRECTORY_SEP (*nm))
|
|
|
986 {
|
|
|
987 defdir = alloca (MAXPATHLEN + 1);
|
|
|
988 relpath = getdefdir (tolower (drive) - 'a' + 1, defdir);
|
|
|
989 }
|
|
|
990 }
|
|
|
991 }
|
|
|
992 #endif /* DOS_NT */
|
|
|
993
|
|
|
994 /* Handle // and /~ in middle of file name
|
|
|
995 by discarding everything through the first / of that sequence. */
|
|
|
996 p = nm;
|
|
|
997 while (*p)
|
|
|
998 {
|
|
|
999 /* Since we know the path is absolute, we can assume that each
|
|
|
1000 element starts with a "/". */
|
|
|
1001
|
|
|
1002 /* "//" anywhere isn't necessarily hairy; we just start afresh
|
|
|
1003 with the second slash. */
|
|
|
1004 if (IS_DIRECTORY_SEP (p[0]) && IS_DIRECTORY_SEP (p[1])
|
|
|
1005 #if defined (APOLLO) || defined (WINDOWSNT)
|
|
|
1006 /* // at start of filename is meaningful on Apollo
|
|
|
1007 and WindowsNT systems */
|
|
|
1008 && nm != p
|
|
|
1009 #endif /* APOLLO || WINDOWSNT */
|
|
|
1010 )
|
|
|
1011 nm = p + 1;
|
|
|
1012
|
|
|
1013 /* "~" is hairy as the start of any path element. */
|
|
|
1014 if (IS_DIRECTORY_SEP (p[0]) && p[1] == '~')
|
|
|
1015 nm = p + 1;
|
|
|
1016
|
|
|
1017 p++;
|
|
|
1018 }
|
|
|
1019
|
|
|
1020 /* If nm is absolute, flush ...// and detect /./ and /../.
|
|
|
1021 If no /./ or /../ we can return right away. */
|
|
|
1022 if (
|
|
|
1023 IS_DIRECTORY_SEP (nm[0])
|
|
|
1024 #ifdef VMS
|
|
|
1025 || strchr (nm, ':')
|
|
|
1026 #endif /* VMS */
|
|
|
1027 )
|
|
|
1028 {
|
|
|
1029 /* If it turns out that the filename we want to return is just a
|
|
|
1030 suffix of FILENAME, we don't need to go through and edit
|
|
|
1031 things; we just need to construct a new string using data
|
|
|
1032 starting at the middle of FILENAME. If we set lose to a
|
|
|
1033 non-zero value, that means we've discovered that we can't do
|
|
|
1034 that cool trick. */
|
|
|
1035 int lose = 0;
|
|
|
1036
|
|
|
1037 p = nm;
|
|
|
1038 while (*p)
|
|
|
1039 {
|
|
|
1040 /* Since we know the path is absolute, we can assume that each
|
|
|
1041 element starts with a "/". */
|
|
|
1042
|
|
|
1043 /* "." and ".." are hairy. */
|
|
|
1044 if (IS_DIRECTORY_SEP (p[0])
|
|
|
1045 && p[1] == '.'
|
|
|
1046 && (IS_DIRECTORY_SEP (p[2])
|
|
|
1047 || p[2] == 0
|
|
|
1048 || (p[2] == '.' && (IS_DIRECTORY_SEP (p[3])
|
|
|
1049 || p[3] == 0))))
|
|
|
1050 lose = 1;
|
|
|
1051 #ifdef VMS
|
|
|
1052 if (p[0] == '\\')
|
|
|
1053 lose = 1;
|
|
|
1054 if (p[0] == '/') {
|
|
|
1055 /* if dev:[dir]/, move nm to / */
|
|
|
1056 if (!slash && p > nm && (brack || colon)) {
|
|
|
1057 nm = (brack ? brack + 1 : colon + 1);
|
|
|
1058 lbrack = rbrack = 0;
|
|
|
1059 brack = 0;
|
|
|
1060 colon = 0;
|
|
|
1061 }
|
|
|
1062 slash = p;
|
|
|
1063 }
|
|
|
1064 if (p[0] == '-')
|
|
|
1065 #ifndef VMS4_4
|
|
|
1066 /* VMS pre V4.4,convert '-'s in filenames. */
|
|
|
1067 if (lbrack == rbrack)
|
|
|
1068 {
|
|
|
1069 if (dots < 2) /* this is to allow negative version numbers */
|
|
|
1070 p[0] = '_';
|
|
|
1071 }
|
|
|
1072 else
|
|
|
1073 #endif /* VMS4_4 */
|
|
|
1074 if (lbrack > rbrack &&
|
|
|
1075 ((p[-1] == '.' || p[-1] == '[' || p[-1] == '<') &&
|
|
|
1076 (p[1] == '.' || p[1] == ']' || p[1] == '>')))
|
|
|
1077 lose = 1;
|
|
|
1078 #ifndef VMS4_4
|
|
|
1079 else
|
|
|
1080 p[0] = '_';
|
|
|
1081 #endif /* VMS4_4 */
|
|
|
1082 /* count open brackets, reset close bracket pointer */
|
|
|
1083 if (p[0] == '[' || p[0] == '<')
|
|
|
1084 lbrack++, brack = 0;
|
|
|
1085 /* count close brackets, set close bracket pointer */
|
|
|
1086 if (p[0] == ']' || p[0] == '>')
|
|
|
1087 rbrack++, brack = p;
|
|
|
1088 /* detect ][ or >< */
|
|
|
1089 if ((p[0] == ']' || p[0] == '>') && (p[1] == '[' || p[1] == '<'))
|
|
|
1090 lose = 1;
|
|
|
1091 if ((p[0] == ':' || p[0] == ']' || p[0] == '>') && p[1] == '~')
|
|
|
1092 nm = p + 1, lose = 1;
|
|
|
1093 if (p[0] == ':' && (colon || slash))
|
|
|
1094 /* if dev1:[dir]dev2:, move nm to dev2: */
|
|
|
1095 if (brack)
|
|
|
1096 {
|
|
|
1097 nm = brack + 1;
|
|
|
1098 brack = 0;
|
|
|
1099 }
|
|
|
1100 /* if /pathname/dev:, move nm to dev: */
|
|
|
1101 else if (slash)
|
|
|
1102 nm = slash + 1;
|
|
|
1103 /* if node::dev:, move colon following dev */
|
|
|
1104 else if (colon && colon[-1] == ':')
|
|
|
1105 colon = p;
|
|
|
1106 /* if dev1:dev2:, move nm to dev2: */
|
|
|
1107 else if (colon && colon[-1] != ':')
|
|
|
1108 {
|
|
|
1109 nm = colon + 1;
|
|
|
1110 colon = 0;
|
|
|
1111 }
|
|
|
1112 if (p[0] == ':' && !colon)
|
|
|
1113 {
|
|
|
1114 if (p[1] == ':')
|
|
|
1115 p++;
|
|
|
1116 colon = p;
|
|
|
1117 }
|
|
|
1118 if (lbrack == rbrack)
|
|
|
1119 if (p[0] == ';')
|
|
|
1120 dots = 2;
|
|
|
1121 else if (p[0] == '.')
|
|
|
1122 dots++;
|
|
|
1123 #endif /* VMS */
|
|
|
1124 p++;
|
|
|
1125 }
|
|
|
1126 if (!lose)
|
|
|
1127 {
|
|
|
1128 #ifdef VMS
|
|
|
1129 if (strchr (nm, '/'))
|
|
|
1130 return build_string (sys_translate_unix (nm));
|
|
|
1131 #endif /* VMS */
|
|
|
1132 #ifndef DOS_NT
|
|
16
|
1133 if (nm == XSTRING_DATA (name))
|
|
0
|
1134 return name;
|
|
|
1135 return build_string ((char *) nm);
|
|
|
1136 #endif /* not DOS_NT */
|
|
|
1137 }
|
|
|
1138 }
|
|
|
1139
|
|
|
1140 /* Now determine directory to start with and put it in newdir */
|
|
|
1141
|
|
|
1142 newdir = 0;
|
|
|
1143
|
|
|
1144 if (nm[0] == '~') /* prefix ~ */
|
|
|
1145 {
|
|
|
1146 if (IS_DIRECTORY_SEP (nm[1])
|
|
|
1147 #ifdef VMS
|
|
|
1148 || nm[1] == ':'
|
|
|
1149 #endif /* VMS */
|
|
|
1150 || nm[1] == 0) /* ~ by itself */
|
|
|
1151 {
|
|
|
1152 if (!(newdir = (Bufbyte *) egetenv ("HOME")))
|
|
|
1153 newdir = (Bufbyte *) "";
|
|
|
1154 #ifdef DOS_NT
|
|
|
1155 /* Problem when expanding "~\" if HOME is not on current drive.
|
|
|
1156 Ulrich Leodolter, Wed Jan 11 10:20:35 1995 */
|
|
|
1157 if (newdir[1] == ':')
|
|
|
1158 drive = newdir[0];
|
|
|
1159 dostounix_filename (newdir);
|
|
|
1160 #endif
|
|
|
1161 nm++;
|
|
|
1162 #ifdef VMS
|
|
|
1163 nm++; /* Don't leave the slash in nm. */
|
|
|
1164 #endif /* VMS */
|
|
|
1165 }
|
|
|
1166 else /* ~user/filename */
|
|
|
1167 {
|
|
|
1168 for (p = nm; *p && (!IS_DIRECTORY_SEP (*p)
|
|
|
1169 #ifdef VMS
|
|
|
1170 && *p != ':'
|
|
|
1171 #endif /* VMS */
|
|
|
1172 ); p++);
|
|
|
1173 o = (Bufbyte *) alloca (p - nm + 1);
|
|
|
1174 memcpy (o, (char *) nm, p - nm);
|
|
|
1175 o [p - nm] = 0;
|
|
|
1176
|
|
|
1177 #ifdef WINDOWSNT
|
|
|
1178 newdir = (unsigned char *) egetenv ("HOME");
|
|
|
1179 dostounix_filename (newdir);
|
|
|
1180 #else /* not WINDOWSNT */
|
|
|
1181 /* Jamie reports that getpwnam() can get wedged by SIGIO/SIGALARM
|
|
|
1182 occurring in it. (It can call select()). */
|
|
|
1183 slow_down_interrupts ();
|
|
|
1184 pw = (struct passwd *) getpwnam ((char *) o + 1);
|
|
|
1185 speed_up_interrupts ();
|
|
|
1186 if (pw)
|
|
|
1187 {
|
|
|
1188 newdir = (Bufbyte *) pw -> pw_dir;
|
|
|
1189 #ifdef VMS
|
|
|
1190 nm = p + 1; /* skip the terminator */
|
|
|
1191 #else
|
|
|
1192 nm = p;
|
|
|
1193 #endif /* VMS */
|
|
|
1194 }
|
|
|
1195 #endif /* not WINDOWSNT */
|
|
|
1196
|
|
|
1197 /* If we don't find a user of that name, leave the name
|
|
|
1198 unchanged; don't move nm forward to p. */
|
|
|
1199 }
|
|
|
1200 }
|
|
|
1201
|
|
|
1202 if (!IS_ANY_SEP (nm[0])
|
|
|
1203 #ifdef VMS
|
|
|
1204 && !strchr (nm, ':')
|
|
|
1205 #endif /* not VMS */
|
|
|
1206 #ifdef DOS_NT
|
|
|
1207 && drive == -1
|
|
|
1208 #endif /* DOS_NT */
|
|
|
1209 && !newdir
|
|
|
1210 && STRINGP (defalt))
|
|
|
1211 {
|
|
16
|
1212 newdir = XSTRING_DATA (defalt);
|
|
0
|
1213 }
|
|
|
1214
|
|
|
1215 #ifdef DOS_NT
|
|
|
1216 if (newdir == 0 && relpath)
|
|
|
1217 newdir = defdir;
|
|
|
1218 #endif /* DOS_NT */
|
|
|
1219 if (newdir != 0)
|
|
|
1220 {
|
|
|
1221 /* Get rid of any slash at the end of newdir. */
|
|
|
1222 int length = strlen ((char *) newdir);
|
|
|
1223 /* Adding `length > 1 &&' makes ~ expand into / when homedir
|
|
|
1224 is the root dir. People disagree about whether that is right.
|
|
|
1225 Anyway, we can't take the risk of this change now. */
|
|
|
1226 #ifdef DOS_NT
|
|
|
1227 if (newdir[1] != ':' && length > 1)
|
|
|
1228 #endif
|
|
|
1229 if (IS_DIRECTORY_SEP (newdir[length - 1]))
|
|
|
1230 {
|
|
|
1231 Bufbyte *temp = (Bufbyte *) alloca (length);
|
|
|
1232 memcpy (temp, newdir, length - 1);
|
|
|
1233 temp[length - 1] = 0;
|
|
|
1234 newdir = temp;
|
|
|
1235 }
|
|
|
1236 tlen = length + 1;
|
|
|
1237 }
|
|
|
1238 else
|
|
|
1239 tlen = 0;
|
|
|
1240
|
|
|
1241 /* Now concatenate the directory and name to new space in the stack frame */
|
|
|
1242 tlen += strlen ((char *) nm) + 1;
|
|
|
1243 #ifdef DOS_NT
|
|
|
1244 /* Add reserved space for drive name. (The Microsoft x86 compiler
|
|
|
1245 produces incorrect code if the following two lines are combined.) */
|
|
|
1246 target = (Bufbyte *) alloca (tlen + 2);
|
|
|
1247 target += 2;
|
|
|
1248 #else /* not DOS_NT */
|
|
|
1249 target = (Bufbyte *) alloca (tlen);
|
|
|
1250 #endif /* not DOS_NT */
|
|
|
1251 *target = 0;
|
|
|
1252
|
|
|
1253 if (newdir)
|
|
|
1254 {
|
|
|
1255 #ifndef VMS
|
|
|
1256 if (nm[0] == 0 || IS_DIRECTORY_SEP (nm[0]))
|
|
|
1257 strcpy ((char *) target, (char *) newdir);
|
|
|
1258 else
|
|
|
1259 #endif
|
|
|
1260 file_name_as_directory ((char *) target, (char *) newdir);
|
|
|
1261 }
|
|
|
1262
|
|
|
1263 strcat ((char *) target, (char *) nm);
|
|
|
1264 #ifdef VMS
|
|
|
1265 if (strchr (target, '/'))
|
|
|
1266 strcpy (target, sys_translate_unix (target));
|
|
|
1267 #endif /* VMS */
|
|
|
1268
|
|
|
1269 /* Now canonicalize by removing /. and /foo/.. if they appear. */
|
|
|
1270
|
|
|
1271 p = target;
|
|
|
1272 o = target;
|
|
|
1273
|
|
|
1274 while (*p)
|
|
|
1275 {
|
|
|
1276 #ifdef VMS
|
|
|
1277 if (*p != ']' && *p != '>' && *p != '-')
|
|
|
1278 {
|
|
|
1279 if (*p == '\\')
|
|
|
1280 p++;
|
|
|
1281 *o++ = *p++;
|
|
|
1282 }
|
|
|
1283 else if ((p[0] == ']' || p[0] == '>') && p[0] == p[1] + 2)
|
|
|
1284 /* brackets are offset from each other by 2 */
|
|
|
1285 {
|
|
|
1286 p += 2;
|
|
|
1287 if (*p != '.' && *p != '-' && o[-1] != '.')
|
|
|
1288 /* convert [foo][bar] to [bar] */
|
|
|
1289 while (o[-1] != '[' && o[-1] != '<')
|
|
|
1290 o--;
|
|
|
1291 else if (*p == '-' && *o != '.')
|
|
|
1292 *--p = '.';
|
|
|
1293 }
|
|
|
1294 else if (p[0] == '-' && o[-1] == '.' &&
|
|
|
1295 (p[1] == '.' || p[1] == ']' || p[1] == '>'))
|
|
|
1296 /* flush .foo.- ; leave - if stopped by '[' or '<' */
|
|
|
1297 {
|
|
|
1298 do
|
|
|
1299 o--;
|
|
|
1300 while (o[-1] != '.' && o[-1] != '[' && o[-1] != '<');
|
|
|
1301 if (p[1] == '.') /* foo.-.bar ==> bar. */
|
|
|
1302 p += 2;
|
|
|
1303 else if (o[-1] == '.') /* '.foo.-]' ==> ']' */
|
|
|
1304 p++, o--;
|
|
|
1305 /* else [foo.-] ==> [-] */
|
|
|
1306 }
|
|
|
1307 else
|
|
|
1308 {
|
|
|
1309 #ifndef VMS4_4
|
|
|
1310 if (*p == '-' &&
|
|
|
1311 o[-1] != '[' && o[-1] != '<' && o[-1] != '.' &&
|
|
|
1312 p[1] != ']' && p[1] != '>' && p[1] != '.')
|
|
|
1313 *p = '_';
|
|
|
1314 #endif /* VMS4_4 */
|
|
|
1315 *o++ = *p++;
|
|
|
1316 }
|
|
|
1317 #else /* not VMS */
|
|
|
1318 if (!IS_DIRECTORY_SEP (*p))
|
|
|
1319 {
|
|
|
1320 *o++ = *p++;
|
|
|
1321 }
|
|
|
1322 else if (IS_DIRECTORY_SEP (p[0]) && IS_DIRECTORY_SEP (p[1])
|
|
|
1323 #if defined (APOLLO) || defined (WINDOWSNT)
|
|
|
1324 /* // at start of filename is meaningful in Apollo
|
|
|
1325 and WindowsNT systems */
|
|
|
1326 && o != target
|
|
|
1327 #endif /* APOLLO */
|
|
|
1328 )
|
|
|
1329 {
|
|
|
1330 o = target;
|
|
|
1331 p++;
|
|
|
1332 }
|
|
|
1333 else if (IS_DIRECTORY_SEP (p[0])
|
|
|
1334 && p[1] == '.'
|
|
|
1335 && (IS_DIRECTORY_SEP (p[2])
|
|
|
1336 || p[2] == 0))
|
|
|
1337 {
|
|
|
1338 /* If "/." is the entire filename, keep the "/". Otherwise,
|
|
|
1339 just delete the whole "/.". */
|
|
|
1340 if (o == target && p[2] == '\0')
|
|
|
1341 *o++ = *p;
|
|
|
1342 p += 2;
|
|
|
1343 }
|
|
|
1344 else if (IS_DIRECTORY_SEP (p[0]) && p[1] == '.' && p[2] == '.'
|
|
|
1345 /* `/../' is the "superroot" on certain file systems. */
|
|
|
1346 && o != target
|
|
|
1347 && (IS_DIRECTORY_SEP (p[3]) || p[3] == 0))
|
|
|
1348 {
|
|
|
1349 while (o != target && (--o) && !IS_DIRECTORY_SEP (*o))
|
|
|
1350 ;
|
|
|
1351 #if defined (APOLLO) || defined (WINDOWSNT)
|
|
|
1352 if (o == target + 1
|
|
|
1353 && IS_DIRECTORY_SEP (o[-1]) && IS_DIRECTORY_SEP (o[0]))
|
|
|
1354 ++o;
|
|
|
1355 else
|
|
|
1356 #endif /* APOLLO || WINDOWSNT */
|
|
|
1357 if (o == target && IS_ANY_SEP (*o))
|
|
|
1358 ++o;
|
|
|
1359 p += 3;
|
|
|
1360 }
|
|
|
1361 else
|
|
|
1362 {
|
|
|
1363 *o++ = *p++;
|
|
|
1364 }
|
|
|
1365 #endif /* not VMS */
|
|
|
1366 }
|
|
|
1367
|
|
|
1368 #ifdef DOS_NT
|
|
|
1369 /* at last, set drive name. */
|
|
|
1370 if (target[1] != ':'
|
|
|
1371 #ifdef WINDOWSNT
|
|
|
1372 /* Allow network paths that look like "\\foo" */
|
|
|
1373 && !(IS_DIRECTORY_SEP (target[0]) && IS_DIRECTORY_SEP (target[1]))
|
|
|
1374 #endif /* WINDOWSNT */
|
|
|
1375 )
|
|
|
1376 {
|
|
|
1377 target -= 2;
|
|
|
1378 target[0] = (drive < 0 ? getdisk () + 'A' : drive);
|
|
|
1379 target[1] = ':';
|
|
|
1380 }
|
|
|
1381 #endif /* DOS_NT */
|
|
|
1382
|
|
|
1383 return make_string (target, o - target);
|
|
|
1384 }
|
|
|
1385
|
|
|
1386 #if 0 /* FSFmacs */
|
|
|
1387 another older version of expand-file-name;
|
|
|
1388 #endif
|
|
|
1389
|
|
|
1390 /* not a full declaration because realpath() is typed differently
|
|
|
1391 on different systems */
|
|
|
1392 extern char *realpath ();
|
|
|
1393
|
|
20
|
1394 DEFUN ("file-truename", Ffile_truename, 1, 2, 0, /*
|
|
0
|
1395 Return the canonical name of the given FILE.
|
|
|
1396 Second arg DEFAULT is directory to start with if FILE is relative
|
|
|
1397 (does not start with slash); if DEFAULT is nil or missing,
|
|
|
1398 the current buffer's value of default-directory is used.
|
|
|
1399 No component of the resulting pathname will be a symbolic link, as
|
|
|
1400 in the realpath() function.
|
|
20
|
1401 */
|
|
|
1402 (filename, defalt))
|
|
0
|
1403 {
|
|
116
|
1404 /* This function can call lisp */
|
|
70
|
1405 struct gcpro gcpro1;
|
|
0
|
1406 Lisp_Object expanded_name;
|
|
|
1407 Lisp_Object handler;
|
|
|
1408
|
|
|
1409 CHECK_STRING (filename);
|
|
|
1410
|
|
|
1411 expanded_name = Fexpand_file_name (filename, defalt);
|
|
|
1412
|
|
|
1413 if (!STRINGP (expanded_name))
|
|
|
1414 return Qnil;
|
|
|
1415
|
|
|
1416 GCPRO1 (expanded_name);
|
|
|
1417 handler = Ffind_file_name_handler (expanded_name, Qfile_truename);
|
|
|
1418 UNGCPRO;
|
|
|
1419
|
|
|
1420 if (!NILP (handler))
|
|
|
1421 return (call2_check_string (handler, Qfile_truename,
|
|
|
1422 expanded_name));
|
|
|
1423
|
|
|
1424 #ifdef VMS
|
|
|
1425 return (expanded_name);
|
|
|
1426 #else
|
|
|
1427 {
|
|
|
1428 char resolved_path[MAXPATHLEN];
|
|
|
1429 char path[MAXPATHLEN];
|
|
|
1430 char *p = path;
|
|
16
|
1431 int elen = XSTRING_LENGTH (expanded_name);
|
|
0
|
1432
|
|
|
1433 if (elen >= countof (path))
|
|
|
1434 goto toolong;
|
|
|
1435
|
|
16
|
1436 memcpy (path, XSTRING_DATA (expanded_name), elen + 1);
|
|
0
|
1437 /* memset (resolved_path, 0, sizeof (resolved_path)); */
|
|
|
1438
|
|
|
1439 /* Try doing it all at once. */
|
|
|
1440 /* !!#### Does realpath() Mule-encapsulate? */
|
|
|
1441 if (!realpath (path, resolved_path))
|
|
|
1442 {
|
|
|
1443 /* Didn't resolve it -- have to do it one component at a time. */
|
|
|
1444 /* "realpath" is a typically useless, stupid un*x piece of crap.
|
|
|
1445 It claims to return a useful value in the "error" case, but since
|
|
|
1446 there is no indication provided of how far along the pathname
|
|
|
1447 the function went before erring, there is no way to use the
|
|
|
1448 partial result returned. What a piece of junk. */
|
|
|
1449 for (;;)
|
|
|
1450 {
|
|
|
1451 p = (char *) memchr (p + 1, '/', elen - (p + 1 - path));
|
|
|
1452 if (p)
|
|
|
1453 *p = 0;
|
|
|
1454
|
|
|
1455 /* memset (resolved_path, 0, sizeof (resolved_path)); */
|
|
|
1456 if (realpath (path, resolved_path))
|
|
|
1457 {
|
|
|
1458 if (p)
|
|
|
1459 *p = '/';
|
|
|
1460 else
|
|
|
1461 break;
|
|
|
1462
|
|
|
1463 }
|
|
|
1464 else if (errno == ENOENT)
|
|
|
1465 {
|
|
|
1466 /* Failed on this component. Just tack on the rest of
|
|
|
1467 the string and we are done. */
|
|
|
1468 int rlen = strlen (resolved_path);
|
|
|
1469
|
|
|
1470 /* "On failure, it returns NULL, sets errno to indicate
|
|
|
1471 the error, and places in resolved_path the absolute pathname
|
|
|
1472 of the path component which could not be resolved." */
|
|
|
1473 if (p)
|
|
|
1474 {
|
|
|
1475 int plen = elen - (p - path);
|
|
|
1476
|
|
|
1477 if (rlen > 1 && resolved_path[rlen - 1] == '/')
|
|
|
1478 rlen = rlen - 1;
|
|
|
1479
|
|
|
1480 if (plen + rlen + 1 > countof (resolved_path))
|
|
|
1481 goto toolong;
|
|
|
1482
|
|
|
1483 resolved_path[rlen] = '/';
|
|
|
1484 memcpy (resolved_path + rlen + 1, p + 1, plen + 1 - 1);
|
|
|
1485 }
|
|
|
1486 break;
|
|
|
1487 }
|
|
|
1488 else
|
|
|
1489 goto lose;
|
|
|
1490 }
|
|
|
1491 }
|
|
|
1492
|
|
|
1493 {
|
|
|
1494 int rlen = strlen (resolved_path);
|
|
82
|
1495 if (elen > 0 && XSTRING_BYTE (expanded_name, elen - 1) == '/'
|
|
0
|
1496 && !(rlen > 0 && resolved_path[rlen - 1] == '/'))
|
|
|
1497 {
|
|
|
1498 if (rlen + 1 > countof (resolved_path))
|
|
|
1499 goto toolong;
|
|
|
1500 resolved_path[rlen] = '/';
|
|
|
1501 resolved_path[rlen + 1] = 0;
|
|
|
1502 rlen = rlen + 1;
|
|
|
1503 }
|
|
|
1504 return make_string ((Bufbyte *) resolved_path, rlen);
|
|
|
1505 }
|
|
|
1506
|
|
|
1507 toolong:
|
|
|
1508 errno = ENAMETOOLONG;
|
|
|
1509 goto lose;
|
|
|
1510 lose:
|
|
|
1511 report_file_error ("Finding truename", list1 (expanded_name));
|
|
|
1512 }
|
|
|
1513 return Qnil; /* suppress compiler warning */
|
|
|
1514 #endif /* not VMS */
|
|
|
1515 }
|
|
|
1516
|
|
|
1517
|
|
20
|
1518 DEFUN ("substitute-in-file-name", Fsubstitute_in_file_name, 1, 1, 0, /*
|
|
0
|
1519 Substitute environment variables referred to in FILENAME.
|
|
|
1520 `$FOO' where FOO is an environment variable name means to substitute
|
|
|
1521 the value of that variable. The variable name should be terminated
|
|
|
1522 with a character not a letter, digit or underscore; otherwise, enclose
|
|
|
1523 the entire variable name in braces.
|
|
|
1524 If `/~' appears, all of FILENAME through that `/' is discarded.
|
|
|
1525
|
|
|
1526 On VMS, `$' substitution is not done; this function does little and only
|
|
|
1527 duplicates what `expand-file-name' does.
|
|
20
|
1528 */
|
|
|
1529 (string))
|
|
0
|
1530 {
|
|
116
|
1531 /* This function can call lisp */
|
|
0
|
1532 Bufbyte *nm;
|
|
|
1533
|
|
|
1534 Bufbyte *s, *p, *o, *x, *endp;
|
|
|
1535 Bufbyte *target = 0;
|
|
|
1536 int total = 0;
|
|
|
1537 int substituted = 0;
|
|
|
1538 Bufbyte *xnm;
|
|
|
1539 Lisp_Object handler;
|
|
|
1540
|
|
|
1541 CHECK_STRING (string);
|
|
|
1542
|
|
|
1543 /* If the file name has special constructs in it,
|
|
|
1544 call the corresponding file handler. */
|
|
|
1545 handler = Ffind_file_name_handler (string, Qsubstitute_in_file_name);
|
|
|
1546 if (!NILP (handler))
|
|
114
|
1547 return (call2_check_string_or_nil (handler, Qsubstitute_in_file_name,
|
|
|
1548 string));
|
|
0
|
1549
|
|
16
|
1550 nm = XSTRING_DATA (string);
|
|
0
|
1551 #ifdef MSDOS
|
|
|
1552 dostounix_filename (nm = strcpy (alloca (strlen (nm) + 1), nm));
|
|
16
|
1553 substituted = !strcmp (nm, XSTRING_DATA (string));
|
|
0
|
1554 #endif
|
|
16
|
1555 endp = nm + XSTRING_LENGTH (string);
|
|
0
|
1556
|
|
|
1557 /* If /~ or // appears, discard everything through first slash. */
|
|
|
1558
|
|
|
1559 for (p = nm; p != endp; p++)
|
|
|
1560 {
|
|
|
1561 if ((p[0] == '~' ||
|
|
|
1562 #ifdef APOLLO
|
|
|
1563 /* // at start of file name is meaningful in Apollo system */
|
|
|
1564 (p[0] == '/' && p - 1 != nm)
|
|
|
1565 #else /* not APOLLO */
|
|
|
1566 #ifdef WINDOWSNT
|
|
|
1567 (IS_DIRECTORY_SEP (p[0]) && p - 1 != nm)
|
|
|
1568 #else /* not WINDOWSNT */
|
|
|
1569 p[0] == '/'
|
|
|
1570 #endif /* not WINDOWSNT */
|
|
|
1571 #endif /* not APOLLO */
|
|
|
1572 )
|
|
|
1573 && p != nm
|
|
|
1574 && (0
|
|
|
1575 #ifdef VMS
|
|
|
1576 || p[-1] == ':' || p[-1] == ']' || p[-1] == '>'
|
|
|
1577 #endif /* VMS */
|
|
|
1578 || IS_DIRECTORY_SEP (p[-1])))
|
|
|
1579 {
|
|
|
1580 nm = p;
|
|
|
1581 substituted = 1;
|
|
|
1582 }
|
|
|
1583 #ifdef DOS_NT
|
|
|
1584 if (p[0] && p[1] == ':')
|
|
|
1585 {
|
|
|
1586 nm = p;
|
|
|
1587 substituted = 1;
|
|
|
1588 }
|
|
|
1589 #endif /* DOS_NT */
|
|
|
1590 }
|
|
|
1591
|
|
|
1592 #ifdef VMS
|
|
|
1593 return build_string (nm);
|
|
|
1594 #else
|
|
|
1595
|
|
|
1596 /* See if any variables are substituted into the string
|
|
|
1597 and find the total length of their values in `total' */
|
|
|
1598
|
|
|
1599 for (p = nm; p != endp;)
|
|
|
1600 if (*p != '$')
|
|
|
1601 p++;
|
|
|
1602 else
|
|
|
1603 {
|
|
|
1604 p++;
|
|
|
1605 if (p == endp)
|
|
|
1606 goto badsubst;
|
|
|
1607 else if (*p == '$')
|
|
|
1608 {
|
|
|
1609 /* "$$" means a single "$" */
|
|
|
1610 p++;
|
|
|
1611 total -= 1;
|
|
|
1612 substituted = 1;
|
|
|
1613 continue;
|
|
|
1614 }
|
|
|
1615 else if (*p == '{')
|
|
|
1616 {
|
|
|
1617 o = ++p;
|
|
|
1618 while (p != endp && *p != '}') p++;
|
|
|
1619 if (*p != '}') goto missingclose;
|
|
|
1620 s = p;
|
|
|
1621 }
|
|
|
1622 else
|
|
|
1623 {
|
|
|
1624 o = p;
|
|
|
1625 while (p != endp && (isalnum (*p) || *p == '_')) p++;
|
|
|
1626 s = p;
|
|
|
1627 }
|
|
|
1628
|
|
|
1629 /* Copy out the variable name */
|
|
|
1630 target = (Bufbyte *) alloca (s - o + 1);
|
|
|
1631 strncpy ((char *) target, (char *) o, s - o);
|
|
|
1632 target[s - o] = 0;
|
|
|
1633 #ifdef DOS_NT
|
|
|
1634 strupr (target); /* $home == $HOME etc. */
|
|
|
1635 #endif /* DOS_NT */
|
|
|
1636
|
|
|
1637 /* Get variable value */
|
|
|
1638 o = (Bufbyte *) egetenv ((char *) target);
|
|
|
1639 if (!o) goto badvar;
|
|
|
1640 total += strlen ((char *) o);
|
|
|
1641 substituted = 1;
|
|
|
1642 }
|
|
|
1643
|
|
|
1644 if (!substituted)
|
|
|
1645 return string;
|
|
|
1646
|
|
|
1647 /* If substitution required, recopy the string and do it */
|
|
|
1648 /* Make space in stack frame for the new copy */
|
|
16
|
1649 xnm = (Bufbyte *) alloca (XSTRING_LENGTH (string) + total + 1);
|
|
0
|
1650 x = xnm;
|
|
|
1651
|
|
|
1652 /* Copy the rest of the name through, replacing $ constructs with values */
|
|
|
1653 for (p = nm; *p;)
|
|
|
1654 if (*p != '$')
|
|
|
1655 *x++ = *p++;
|
|
|
1656 else
|
|
|
1657 {
|
|
|
1658 p++;
|
|
|
1659 if (p == endp)
|
|
|
1660 goto badsubst;
|
|
|
1661 else if (*p == '$')
|
|
|
1662 {
|
|
|
1663 *x++ = *p++;
|
|
|
1664 continue;
|
|
|
1665 }
|
|
|
1666 else if (*p == '{')
|
|
|
1667 {
|
|
|
1668 o = ++p;
|
|
|
1669 while (p != endp && *p != '}') p++;
|
|
|
1670 if (*p != '}') goto missingclose;
|
|
|
1671 s = p++;
|
|
|
1672 }
|
|
|
1673 else
|
|
|
1674 {
|
|
|
1675 o = p;
|
|
|
1676 while (p != endp && (isalnum (*p) || *p == '_')) p++;
|
|
|
1677 s = p;
|
|
|
1678 }
|
|
|
1679
|
|
|
1680 /* Copy out the variable name */
|
|
|
1681 target = (Bufbyte *) alloca (s - o + 1);
|
|
|
1682 strncpy ((char *) target, (char *) o, s - o);
|
|
|
1683 target[s - o] = 0;
|
|
|
1684 #ifdef DOS_NT
|
|
|
1685 strupr (target); /* $home == $HOME etc. */
|
|
|
1686 #endif /* DOS_NT */
|
|
|
1687
|
|
|
1688 /* Get variable value */
|
|
|
1689 o = (Bufbyte *) egetenv ((char *) target);
|
|
|
1690 if (!o)
|
|
|
1691 goto badvar;
|
|
|
1692
|
|
|
1693 strcpy ((char *) x, (char *) o);
|
|
|
1694 x += strlen ((char *) o);
|
|
|
1695 }
|
|
|
1696
|
|
|
1697 *x = 0;
|
|
|
1698
|
|
|
1699 /* If /~ or // appears, discard everything through first slash. */
|
|
|
1700
|
|
|
1701 for (p = xnm; p != x; p++)
|
|
|
1702 if ((p[0] == '~'
|
|
|
1703 #ifdef APOLLO
|
|
|
1704 /* // at start of file name is meaningful in Apollo system */
|
|
|
1705 || (p[0] == '/' && p - 1 != xnm)
|
|
|
1706 #else /* not APOLLO */
|
|
|
1707 #ifdef WINDOWSNT
|
|
|
1708 || (IS_DIRECTORY_SEP (p[0]) && p - 1 != xnm)
|
|
|
1709 #else /* not WINDOWSNT */
|
|
|
1710 || p[0] == '/'
|
|
|
1711 #endif /* not WINDOWSNT */
|
|
|
1712 #endif /* not APOLLO */
|
|
|
1713 )
|
|
|
1714 /* don't do p[-1] if that would go off the beginning --jwz */
|
|
|
1715 && p != nm && p > xnm && IS_DIRECTORY_SEP (p[-1]))
|
|
|
1716 xnm = p;
|
|
|
1717 #ifdef DOS_NT
|
|
|
1718 else if (p[0] && p[1] == ':')
|
|
|
1719 xnm = p;
|
|
|
1720 #endif
|
|
|
1721
|
|
|
1722 return make_string (xnm, x - xnm);
|
|
|
1723
|
|
|
1724 badsubst:
|
|
|
1725 error ("Bad format environment-variable substitution");
|
|
|
1726 missingclose:
|
|
|
1727 error ("Missing \"}\" in environment-variable substitution");
|
|
|
1728 badvar:
|
|
|
1729 error ("Substituting nonexistent environment variable \"%s\"",
|
|
|
1730 target);
|
|
|
1731
|
|
|
1732 /* NOTREACHED */
|
|
|
1733 return Qnil; /* suppress compiler warning */
|
|
|
1734 #endif /* not VMS */
|
|
|
1735 }
|
|
|
1736
|
|
|
1737 /* (directory-file-name (expand-file-name FOO)) */
|
|
|
1738
|
|
|
1739 Lisp_Object
|
|
|
1740 expand_and_dir_to_file (Lisp_Object filename, Lisp_Object defdir)
|
|
|
1741 {
|
|
116
|
1742 /* This function can call lisp */
|
|
0
|
1743 Lisp_Object abspath;
|
|
|
1744 struct gcpro gcpro1;
|
|
|
1745
|
|
|
1746 abspath = Fexpand_file_name (filename, defdir);
|
|
116
|
1747 GCPRO1 (abspath);
|
|
0
|
1748 #ifdef VMS
|
|
|
1749 {
|
|
|
1750 Bufbyte c =
|
|
82
|
1751 XSTRING_BYTE (abspath, XSTRING_LENGTH (abspath) - 1);
|
|
0
|
1752 if (c == ':' || c == ']' || c == '>')
|
|
|
1753 abspath = Fdirectory_file_name (abspath);
|
|
|
1754 }
|
|
|
1755 #else
|
|
|
1756 /* Remove final slash, if any (unless path is root).
|
|
|
1757 stat behaves differently depending! */
|
|
16
|
1758 if (XSTRING_LENGTH (abspath) > 1
|
|
82
|
1759 && IS_DIRECTORY_SEP (XSTRING_BYTE (abspath, XSTRING_LENGTH (abspath) - 1))
|
|
|
1760 && !IS_DEVICE_SEP (XSTRING_BYTE (abspath, XSTRING_LENGTH (abspath) - 2)))
|
|
0
|
1761 /* We cannot take shortcuts; they might be wrong for magic file names. */
|
|
|
1762 abspath = Fdirectory_file_name (abspath);
|
|
|
1763 #endif
|
|
|
1764 UNGCPRO;
|
|
|
1765 return abspath;
|
|
|
1766 }
|
|
|
1767
|
|
|
1768 /* Signal an error if the file ABSNAME already exists.
|
|
|
1769 If INTERACTIVE is nonzero, ask the user whether to proceed,
|
|
|
1770 and bypass the error if the user says to go ahead.
|
|
|
1771 QUERYSTRING is a name for the action that is being considered
|
|
|
1772 to alter the file.
|
|
|
1773 *STATPTR is used to store the stat information if the file exists.
|
|
|
1774 If the file does not exist, STATPTR->st_mode is set to 0. */
|
|
|
1775
|
|
|
1776 static void
|
|
|
1777 barf_or_query_if_file_exists (Lisp_Object absname, CONST char *querystring,
|
|
|
1778 int interactive, struct stat *statptr)
|
|
|
1779 {
|
|
116
|
1780 /* This function can call lisp */
|
|
0
|
1781 struct stat statbuf;
|
|
|
1782
|
|
|
1783 /* stat is a good way to tell whether the file exists,
|
|
|
1784 regardless of what access permissions it has. */
|
|
16
|
1785 if (stat ((char *) XSTRING_DATA (absname), &statbuf) >= 0)
|
|
0
|
1786 {
|
|
|
1787 Lisp_Object tem;
|
|
116
|
1788
|
|
0
|
1789 if (interactive)
|
|
116
|
1790 {
|
|
|
1791 Lisp_Object prompt;
|
|
|
1792 struct gcpro gcpro1;
|
|
|
1793
|
|
|
1794 prompt = emacs_doprnt_string_c
|
|
0
|
1795 ((CONST Bufbyte *) GETTEXT ("File %s already exists; %s anyway? "),
|
|
16
|
1796 Qnil, -1, XSTRING_DATA (absname),
|
|
116
|
1797 GETTEXT (querystring));
|
|
|
1798
|
|
|
1799 GCPRO1 (prompt);
|
|
|
1800 tem = call1 (Qyes_or_no_p, prompt);
|
|
|
1801 UNGCPRO;
|
|
|
1802 }
|
|
0
|
1803 else
|
|
|
1804 tem = Qnil;
|
|
116
|
1805
|
|
0
|
1806 if (NILP (tem))
|
|
|
1807 Fsignal (Qfile_already_exists,
|
|
|
1808 list2 (build_translated_string ("File already exists"),
|
|
|
1809 absname));
|
|
|
1810 if (statptr)
|
|
|
1811 *statptr = statbuf;
|
|
|
1812 }
|
|
|
1813 else
|
|
|
1814 {
|
|
|
1815 if (statptr)
|
|
|
1816 statptr->st_mode = 0;
|
|
|
1817 }
|
|
|
1818 return;
|
|
|
1819 }
|
|
|
1820
|
|
20
|
1821 DEFUN ("copy-file", Fcopy_file, 2, 4,
|
|
|
1822 "fCopy file: \nFCopy %s to file: \np\nP", /*
|
|
0
|
1823 Copy FILE to NEWNAME. Both args must be strings.
|
|
|
1824 Signals a `file-already-exists' error if file NEWNAME already exists,
|
|
|
1825 unless a third argument OK-IF-ALREADY-EXISTS is supplied and non-nil.
|
|
|
1826 A number as third arg means request confirmation if NEWNAME already exists.
|
|
|
1827 This is what happens in interactive use with M-x.
|
|
|
1828 Fourth arg KEEP-TIME non-nil means give the new file the same
|
|
|
1829 last-modified time as the old one. (This works on only some systems.)
|
|
|
1830 A prefix arg makes KEEP-TIME non-nil.
|
|
20
|
1831 */
|
|
74
|
1832 (filename, newname, ok_if_already_exists, keep_time))
|
|
0
|
1833 {
|
|
116
|
1834 /* This function can call lisp */
|
|
0
|
1835 int ifd, ofd, n;
|
|
|
1836 char buf[16 * 1024];
|
|
|
1837 struct stat st, out_st;
|
|
|
1838 Lisp_Object handler;
|
|
|
1839 int speccount = specpdl_depth ();
|
|
|
1840 struct gcpro gcpro1, gcpro2;
|
|
|
1841 /* Lisp_Object args[6]; */
|
|
|
1842 int input_file_statable_p;
|
|
|
1843
|
|
|
1844 GCPRO2 (filename, newname);
|
|
|
1845 CHECK_STRING (filename);
|
|
|
1846 CHECK_STRING (newname);
|
|
|
1847 filename = Fexpand_file_name (filename, Qnil);
|
|
|
1848 newname = Fexpand_file_name (newname, Qnil);
|
|
|
1849
|
|
|
1850 /* If the input file name has special constructs in it,
|
|
|
1851 call the corresponding file handler. */
|
|
|
1852 handler = Ffind_file_name_handler (filename, Qcopy_file);
|
|
|
1853 /* Likewise for output file name. */
|
|
|
1854 if (NILP (handler))
|
|
|
1855 handler = Ffind_file_name_handler (newname, Qcopy_file);
|
|
|
1856 if (!NILP (handler))
|
|
|
1857 {
|
|
|
1858 UNGCPRO;
|
|
|
1859 return call5 (handler, Qcopy_file, filename, newname,
|
|
74
|
1860 ok_if_already_exists, keep_time);
|
|
0
|
1861 }
|
|
|
1862
|
|
|
1863 /* When second argument is a directory, copy the file into it.
|
|
|
1864 (copy-file "foo" "bar/") == (copy-file "foo" "bar/foo")
|
|
|
1865 */
|
|
|
1866 if (!NILP (Ffile_directory_p (newname)))
|
|
|
1867 {
|
|
|
1868 Lisp_Object args[3];
|
|
|
1869 struct gcpro ngcpro1;
|
|
|
1870 int i = 1;
|
|
|
1871
|
|
|
1872 args[0] = newname;
|
|
|
1873 args[1] = Qnil; args[2] = Qnil;
|
|
|
1874 NGCPRO1 (*args);
|
|
|
1875 ngcpro1.nvars = 3;
|
|
82
|
1876 if (XSTRING_BYTE (newname, XSTRING_LENGTH (newname) - 1) != '/')
|
|
0
|
1877 args[i++] = build_string ("/");
|
|
|
1878 args[i++] = Ffile_name_nondirectory (filename);
|
|
|
1879 newname = Fconcat (i, args);
|
|
|
1880 NUNGCPRO;
|
|
|
1881 }
|
|
|
1882
|
|
|
1883 if (NILP (ok_if_already_exists)
|
|
|
1884 || INTP (ok_if_already_exists))
|
|
|
1885 barf_or_query_if_file_exists (newname, "copy to it",
|
|
|
1886 INTP (ok_if_already_exists), &out_st);
|
|
16
|
1887 else if (stat ((CONST char *) XSTRING_DATA (newname), &out_st) < 0)
|
|
0
|
1888 out_st.st_mode = 0;
|
|
|
1889
|
|
16
|
1890 ifd = open ((char *) XSTRING_DATA (filename), O_RDONLY, 0);
|
|
0
|
1891 if (ifd < 0)
|
|
|
1892 report_file_error ("Opening input file", Fcons (filename, Qnil));
|
|
|
1893
|
|
|
1894 record_unwind_protect (close_file_unwind, make_int (ifd));
|
|
|
1895
|
|
|
1896 /* We can only copy regular files and symbolic links. Other files are not
|
|
|
1897 copyable by us. */
|
|
|
1898 input_file_statable_p = (fstat (ifd, &st) >= 0);
|
|
|
1899
|
|
|
1900 #ifndef DOS_NT
|
|
|
1901 if (out_st.st_mode != 0
|
|
|
1902 && st.st_dev == out_st.st_dev && st.st_ino == out_st.st_ino)
|
|
|
1903 {
|
|
|
1904 errno = 0;
|
|
|
1905 report_file_error ("Input and output files are the same",
|
|
|
1906 Fcons (filename, Fcons (newname, Qnil)));
|
|
|
1907 }
|
|
|
1908 #endif
|
|
|
1909
|
|
|
1910 #if defined (S_ISREG) && defined (S_ISLNK)
|
|
|
1911 if (input_file_statable_p)
|
|
|
1912 {
|
|
|
1913 if (!(S_ISREG (st.st_mode))
|
|
|
1914 /* XEmacs: have to allow S_ISCHR in order to copy /dev/null */
|
|
|
1915 #ifdef S_ISCHR
|
|
|
1916 && !(S_ISCHR (st.st_mode))
|
|
|
1917 #endif
|
|
|
1918 && !(S_ISLNK (st.st_mode)))
|
|
|
1919 {
|
|
|
1920 #if defined (EISDIR)
|
|
|
1921 /* Get a better looking error message. */
|
|
|
1922 errno = EISDIR;
|
|
|
1923 #endif /* EISDIR */
|
|
|
1924 report_file_error ("Non-regular file", Fcons (filename, Qnil));
|
|
|
1925 }
|
|
|
1926 }
|
|
|
1927 #endif /* S_ISREG && S_ISLNK */
|
|
|
1928
|
|
|
1929 #ifdef VMS
|
|
|
1930 /* Create the copy file with the same record format as the input file */
|
|
16
|
1931 ofd = sys_creat ((char *) XSTRING_DATA (newname), 0666, ifd);
|
|
0
|
1932 #else
|
|
|
1933 #ifdef MSDOS
|
|
|
1934 /* System's default file type was set to binary by _fmode in emacs.c. */
|
|
16
|
1935 ofd = creat ((char *) XSTRING_DATA (newname), S_IREAD | S_IWRITE);
|
|
0
|
1936 #else /* not MSDOS */
|
|
16
|
1937 ofd = creat ((char *) XSTRING_DATA (newname), 0666);
|
|
0
|
1938 #endif /* not MSDOS */
|
|
|
1939 #endif /* VMS */
|
|
|
1940 if (ofd < 0)
|
|
|
1941 report_file_error ("Opening output file", list1 (newname));
|
|
|
1942
|
|
|
1943 {
|
|
|
1944 Lisp_Object ofd_locative = noseeum_cons (make_int (ofd), Qnil);
|
|
|
1945
|
|
|
1946 record_unwind_protect (close_file_unwind, ofd_locative);
|
|
|
1947
|
|
|
1948 while ((n = read_allowing_quit (ifd, buf, sizeof (buf))) > 0)
|
|
|
1949 {
|
|
|
1950 if (write_allowing_quit (ofd, buf, n) != n)
|
|
|
1951 report_file_error ("I/O error", list1 (newname));
|
|
|
1952 }
|
|
|
1953
|
|
|
1954 /* Closing the output clobbers the file times on some systems. */
|
|
|
1955 if (close (ofd) < 0)
|
|
|
1956 report_file_error ("I/O error", Fcons (newname, Qnil));
|
|
|
1957
|
|
|
1958 if (input_file_statable_p)
|
|
|
1959 {
|
|
74
|
1960 if (!NILP (keep_time))
|
|
0
|
1961 {
|
|
|
1962 EMACS_TIME atime, mtime;
|
|
|
1963 EMACS_SET_SECS_USECS (atime, st.st_atime, 0);
|
|
|
1964 EMACS_SET_SECS_USECS (mtime, st.st_mtime, 0);
|
|
16
|
1965 if (set_file_times ((char *) XSTRING_DATA (newname), atime,
|
|
0
|
1966 mtime))
|
|
|
1967 report_file_error ("I/O error", Fcons (newname, Qnil));
|
|
|
1968 }
|
|
|
1969 #ifndef MSDOS
|
|
16
|
1970 chmod ((CONST char *) XSTRING_DATA (newname),
|
|
0
|
1971 st.st_mode & 07777);
|
|
|
1972 #else /* MSDOS */
|
|
|
1973 #if defined (__DJGPP__) && __DJGPP__ > 1
|
|
|
1974 /* In DJGPP v2.0 and later, fstat usually returns true file mode bits,
|
|
|
1975 and if it can't, it tells so. Otherwise, under MSDOS we usually
|
|
|
1976 get only the READ bit, which will make the copied file read-only,
|
|
|
1977 so it's better not to chmod at all. */
|
|
|
1978 if ((_djstat_flags & _STFAIL_WRITEBIT) == 0)
|
|
16
|
1979 chmod ((char *) XSTRING_DATA (newname), st.st_mode & 07777);
|
|
0
|
1980 #endif /* DJGPP version 2 or newer */
|
|
|
1981 #endif /* MSDOS */
|
|
|
1982 }
|
|
|
1983
|
|
|
1984 /* We'll close it by hand */
|
|
|
1985 XCAR (ofd_locative) = Qnil;
|
|
|
1986
|
|
|
1987 /* Close ifd */
|
|
|
1988 unbind_to (speccount, Qnil);
|
|
|
1989 }
|
|
|
1990
|
|
|
1991 UNGCPRO;
|
|
|
1992 return Qnil;
|
|
|
1993 }
|
|
|
1994
|
|
20
|
1995 DEFUN ("make-directory-internal", Fmake_directory_internal, 1, 1, 0, /*
|
|
0
|
1996 Create a directory. One argument, a file name string.
|
|
20
|
1997 */
|
|
|
1998 (dirname))
|
|
0
|
1999 {
|
|
116
|
2000 /* This function can call lisp */
|
|
0
|
2001 char dir [MAXPATHLEN];
|
|
|
2002 Lisp_Object handler;
|
|
|
2003 struct gcpro gcpro1;
|
|
|
2004
|
|
|
2005 CHECK_STRING (dirname);
|
|
|
2006 dirname = Fexpand_file_name (dirname, Qnil);
|
|
|
2007
|
|
114
|
2008 GCPRO1 (dirname);
|
|
0
|
2009 handler = Ffind_file_name_handler (dirname, Qmake_directory_internal);
|
|
|
2010 UNGCPRO;
|
|
|
2011 if (!NILP (handler))
|
|
114
|
2012 return (call2 (handler, Qmake_directory_internal, dirname));
|
|
0
|
2013
|
|
16
|
2014 if (XSTRING_LENGTH (dirname) > (sizeof (dir) - 1))
|
|
0
|
2015 {
|
|
|
2016 return Fsignal (Qfile_error,
|
|
|
2017 list3 (build_translated_string ("Creating directory"),
|
|
|
2018 build_translated_string ("pathame too long"),
|
|
|
2019 dirname));
|
|
|
2020 }
|
|
16
|
2021 strncpy (dir, (char *) XSTRING_DATA (dirname),
|
|
|
2022 XSTRING_LENGTH (dirname) + 1);
|
|
0
|
2023
|
|
|
2024 #ifndef VMS
|
|
16
|
2025 if (dir [XSTRING_LENGTH (dirname) - 1] == '/')
|
|
|
2026 dir [XSTRING_LENGTH (dirname) - 1] = 0;
|
|
0
|
2027 #endif
|
|
|
2028
|
|
|
2029 #ifdef WINDOWSNT
|
|
|
2030 if (mkdir (dir) != 0)
|
|
|
2031 #else
|
|
|
2032 if (mkdir (dir, 0777) != 0)
|
|
|
2033 #endif
|
|
|
2034 report_file_error ("Creating directory", list1 (dirname));
|
|
|
2035
|
|
|
2036 return Qnil;
|
|
|
2037 }
|
|
|
2038
|
|
20
|
2039 DEFUN ("delete-directory", Fdelete_directory, 1, 1, "FDelete directory: ", /*
|
|
0
|
2040 Delete a directory. One argument, a file name or directory name string.
|
|
20
|
2041 */
|
|
|
2042 (dirname))
|
|
0
|
2043 {
|
|
116
|
2044 /* This function can call lisp */
|
|
0
|
2045 Lisp_Object handler;
|
|
|
2046 struct gcpro gcpro1;
|
|
|
2047
|
|
114
|
2048 CHECK_STRING (dirname);
|
|
|
2049
|
|
70
|
2050 GCPRO1 (dirname);
|
|
114
|
2051 dirname = Fexpand_file_name (dirname, Qnil);
|
|
|
2052 dirname = Fdirectory_file_name (dirname);
|
|
0
|
2053
|
|
|
2054 handler = Ffind_file_name_handler (dirname, Qdelete_directory);
|
|
|
2055 UNGCPRO;
|
|
|
2056 if (!NILP (handler))
|
|
|
2057 return (call2 (handler, Qdelete_directory, dirname));
|
|
|
2058
|
|
16
|
2059 if (rmdir ((char *) XSTRING_DATA (dirname)) != 0)
|
|
0
|
2060 report_file_error ("Removing directory", list1 (dirname));
|
|
|
2061
|
|
|
2062 return Qnil;
|
|
|
2063 }
|
|
|
2064
|
|
20
|
2065 DEFUN ("delete-file", Fdelete_file, 1, 1, "fDelete file: ", /*
|
|
0
|
2066 Delete specified file. One argument, a file name string.
|
|
|
2067 If file has multiple names, it continues to exist with the other names.
|
|
20
|
2068 */
|
|
|
2069 (filename))
|
|
0
|
2070 {
|
|
116
|
2071 /* This function can call lisp */
|
|
0
|
2072 Lisp_Object handler;
|
|
|
2073 struct gcpro gcpro1;
|
|
|
2074
|
|
|
2075 CHECK_STRING (filename);
|
|
|
2076 filename = Fexpand_file_name (filename, Qnil);
|
|
|
2077
|
|
114
|
2078 GCPRO1 (filename);
|
|
0
|
2079 handler = Ffind_file_name_handler (filename, Qdelete_file);
|
|
|
2080 UNGCPRO;
|
|
|
2081 if (!NILP (handler))
|
|
|
2082 return call2 (handler, Qdelete_file, filename);
|
|
|
2083
|
|
16
|
2084 if (0 > unlink ((char *) XSTRING_DATA (filename)))
|
|
0
|
2085 report_file_error ("Removing old name", list1 (filename));
|
|
|
2086 return Qnil;
|
|
|
2087 }
|
|
|
2088
|
|
|
2089 static Lisp_Object
|
|
|
2090 internal_delete_file_1 (Lisp_Object ignore, Lisp_Object ignore2)
|
|
|
2091 {
|
|
|
2092 return Qt;
|
|
|
2093 }
|
|
|
2094
|
|
|
2095 /* Delete file FILENAME, returning 1 if successful and 0 if failed. */
|
|
|
2096
|
|
|
2097 int
|
|
|
2098 internal_delete_file (Lisp_Object filename)
|
|
|
2099 {
|
|
116
|
2100 /* This function can call lisp */
|
|
0
|
2101 return NILP (condition_case_1 (Qt, Fdelete_file, filename,
|
|
|
2102 internal_delete_file_1, Qnil));
|
|
|
2103 }
|
|
|
2104
|
|
20
|
2105 DEFUN ("rename-file", Frename_file, 2, 3,
|
|
|
2106 "fRename file: \nFRename %s to file: \np", /*
|
|
0
|
2107 Rename FILE as NEWNAME. Both args strings.
|
|
|
2108 If file has names other than FILE, it continues to have those names.
|
|
|
2109 Signals a `file-already-exists' error if a file NEWNAME already exists
|
|
|
2110 unless optional third argument OK-IF-ALREADY-EXISTS is non-nil.
|
|
|
2111 A number as third arg means request confirmation if NEWNAME already exists.
|
|
|
2112 This is what happens in interactive use with M-x.
|
|
20
|
2113 */
|
|
|
2114 (filename, newname, ok_if_already_exists))
|
|
0
|
2115 {
|
|
116
|
2116 /* This function can call lisp */
|
|
0
|
2117 Lisp_Object handler;
|
|
|
2118 struct gcpro gcpro1, gcpro2;
|
|
|
2119
|
|
|
2120 GCPRO2 (filename, newname);
|
|
|
2121 CHECK_STRING (filename);
|
|
|
2122 CHECK_STRING (newname);
|
|
|
2123 filename = Fexpand_file_name (filename, Qnil);
|
|
|
2124 newname = Fexpand_file_name (newname, Qnil);
|
|
|
2125
|
|
|
2126 /* If the file name has special constructs in it,
|
|
|
2127 call the corresponding file handler. */
|
|
|
2128 handler = Ffind_file_name_handler (filename, Qrename_file);
|
|
|
2129 if (NILP (handler))
|
|
|
2130 handler = Ffind_file_name_handler (newname, Qrename_file);
|
|
|
2131 if (!NILP (handler))
|
|
|
2132 {
|
|
|
2133 UNGCPRO;
|
|
|
2134 return call4 (handler, Qrename_file,
|
|
|
2135 filename, newname, ok_if_already_exists);
|
|
|
2136 }
|
|
|
2137
|
|
|
2138 /* When second argument is a directory, rename the file into it.
|
|
|
2139 (rename-file "foo" "bar/") == (rename-file "foo" "bar/foo")
|
|
|
2140 */
|
|
|
2141 if (!NILP (Ffile_directory_p (newname)))
|
|
|
2142 {
|
|
|
2143 Lisp_Object args[3];
|
|
|
2144 struct gcpro ngcpro1;
|
|
|
2145 int i = 1;
|
|
|
2146
|
|
|
2147 args[0] = newname;
|
|
|
2148 args[1] = Qnil; args[2] = Qnil;
|
|
|
2149 NGCPRO1 (*args);
|
|
|
2150 ngcpro1.nvars = 3;
|
|
16
|
2151 if (XSTRING_BYTE (newname, XSTRING_LENGTH (newname) - 1) != '/')
|
|
0
|
2152 args[i++] = build_string ("/");
|
|
|
2153 args[i++] = Ffile_name_nondirectory (filename);
|
|
|
2154 newname = Fconcat (i, args);
|
|
|
2155 NUNGCPRO;
|
|
|
2156 }
|
|
|
2157
|
|
|
2158 if (NILP (ok_if_already_exists)
|
|
|
2159 || INTP (ok_if_already_exists))
|
|
|
2160 barf_or_query_if_file_exists (newname, "rename to it",
|
|
|
2161 INTP (ok_if_already_exists), 0);
|
|
|
2162
|
|
|
2163 #ifdef WINDOWSNT
|
|
100
|
2164 if (!MoveFile (XSTRING (filename)->_data, XSTRING (newname)->_data))
|
|
0
|
2165 #else /* not WINDOWSNT */
|
|
|
2166 /* FSFmacs only calls rename() here under BSD 4.1, and calls
|
|
|
2167 link() and unlink() otherwise, but that's bogus. Sometimes
|
|
|
2168 rename() succeeds where link()/unlink() fail, and we have
|
|
|
2169 configure check for rename() and emulate using link()/unlink()
|
|
|
2170 if necessary. */
|
|
16
|
2171 if (0 > rename ((char *) XSTRING_DATA (filename),
|
|
|
2172 (char *) XSTRING_DATA (newname)))
|
|
0
|
2173 #endif /* not WINDOWSNT */
|
|
|
2174 {
|
|
|
2175 #ifdef WINDOWSNT
|
|
|
2176 /* Why two? And why doesn't MS document what MoveFile will return? */
|
|
|
2177 if (GetLastError () == ERROR_FILE_EXISTS
|
|
|
2178 || GetLastError () == ERROR_ALREADY_EXISTS)
|
|
|
2179 #else /* not WINDOWSNT */
|
|
|
2180 if (errno == EXDEV)
|
|
|
2181 #endif /* not WINDOWSNT */
|
|
|
2182 {
|
|
|
2183 Fcopy_file (filename, newname,
|
|
|
2184 /* We have already prompted if it was an integer,
|
|
|
2185 so don't have copy-file prompt again. */
|
|
|
2186 ((NILP (ok_if_already_exists)) ? Qnil : Qt),
|
|
|
2187 Qt);
|
|
|
2188 Fdelete_file (filename);
|
|
|
2189 }
|
|
|
2190 else
|
|
|
2191 {
|
|
|
2192 report_file_error ("Renaming", list2 (filename, newname));
|
|
|
2193 }
|
|
|
2194 }
|
|
|
2195 UNGCPRO;
|
|
|
2196 return Qnil;
|
|
|
2197 }
|
|
|
2198
|
|
20
|
2199 DEFUN ("add-name-to-file", Fadd_name_to_file, 2, 3,
|
|
|
2200 "fAdd name to file: \nFName to add to %s: \np", /*
|
|
0
|
2201 Give FILE additional name NEWNAME. Both args strings.
|
|
|
2202 Signals a `file-already-exists' error if a file NEWNAME already exists
|
|
|
2203 unless optional third argument OK-IF-ALREADY-EXISTS is non-nil.
|
|
|
2204 A number as third arg means request confirmation if NEWNAME already exists.
|
|
|
2205 This is what happens in interactive use with M-x.
|
|
20
|
2206 */
|
|
|
2207 (filename, newname, ok_if_already_exists))
|
|
0
|
2208 {
|
|
116
|
2209 /* This function can call lisp */
|
|
0
|
2210 Lisp_Object handler;
|
|
|
2211 struct gcpro gcpro1, gcpro2;
|
|
|
2212
|
|
|
2213 GCPRO2 (filename, newname);
|
|
|
2214 CHECK_STRING (filename);
|
|
|
2215 CHECK_STRING (newname);
|
|
|
2216 filename = Fexpand_file_name (filename, Qnil);
|
|
|
2217 newname = Fexpand_file_name (newname, Qnil);
|
|
|
2218
|
|
|
2219 /* If the file name has special constructs in it,
|
|
|
2220 call the corresponding file handler. */
|
|
|
2221 handler = Ffind_file_name_handler (filename, Qadd_name_to_file);
|
|
|
2222 if (!NILP (handler))
|
|
|
2223 RETURN_UNGCPRO (call4 (handler, Qadd_name_to_file, filename,
|
|
|
2224 newname, ok_if_already_exists));
|
|
|
2225
|
|
|
2226 /* If the new name has special constructs in it,
|
|
|
2227 call the corresponding file handler. */
|
|
|
2228 handler = Ffind_file_name_handler (newname, Qadd_name_to_file);
|
|
|
2229 if (!NILP (handler))
|
|
|
2230 RETURN_UNGCPRO (call4 (handler, Qadd_name_to_file, filename,
|
|
|
2231 newname, ok_if_already_exists));
|
|
|
2232
|
|
|
2233 if (NILP (ok_if_already_exists)
|
|
|
2234 || INTP (ok_if_already_exists))
|
|
|
2235 barf_or_query_if_file_exists (newname, "make it a new name",
|
|
|
2236 INTP (ok_if_already_exists), 0);
|
|
|
2237 #ifdef WINDOWSNT
|
|
|
2238 /* Windows does not support this operation. */
|
|
|
2239 report_file_error ("Adding new name", Flist (2, &filename));
|
|
|
2240 #else /* not WINDOWSNT */
|
|
|
2241
|
|
16
|
2242 unlink ((char *) XSTRING_DATA (newname));
|
|
|
2243 if (0 > link ((char *) XSTRING_DATA (filename),
|
|
|
2244 (char *) XSTRING_DATA (newname)))
|
|
0
|
2245 {
|
|
|
2246 report_file_error ("Adding new name",
|
|
|
2247 list2 (filename, newname));
|
|
|
2248 }
|
|
|
2249 #endif /* not WINDOWSNT */
|
|
|
2250
|
|
|
2251 UNGCPRO;
|
|
|
2252 return Qnil;
|
|
|
2253 }
|
|
|
2254
|
|
|
2255 #ifdef S_IFLNK
|
|
20
|
2256 DEFUN ("make-symbolic-link", Fmake_symbolic_link, 2, 3,
|
|
|
2257 "FMake symbolic link to file: \nFMake symbolic link to file %s: \np", /*
|
|
0
|
2258 Make a symbolic link to FILENAME, named LINKNAME. Both args strings.
|
|
|
2259 Signals a `file-already-exists' error if a file LINKNAME already exists
|
|
|
2260 unless optional third argument OK-IF-ALREADY-EXISTS is non-nil.
|
|
|
2261 A number as third arg means request confirmation if LINKNAME already exists.
|
|
|
2262 This happens for interactive use with M-x.
|
|
20
|
2263 */
|
|
|
2264 (filename, linkname, ok_if_already_exists))
|
|
0
|
2265 {
|
|
116
|
2266 /* This function can call lisp */
|
|
0
|
2267 Lisp_Object handler;
|
|
|
2268 struct gcpro gcpro1, gcpro2;
|
|
|
2269
|
|
|
2270 GCPRO2 (filename, linkname);
|
|
|
2271 CHECK_STRING (filename);
|
|
|
2272 CHECK_STRING (linkname);
|
|
|
2273 /* If the link target has a ~, we must expand it to get
|
|
|
2274 a truly valid file name. Otherwise, do not expand;
|
|
|
2275 we want to permit links to relative file names. */
|
|
82
|
2276 if (XSTRING_BYTE (filename, 0) == '~') /* #### Un*x-specific */
|
|
0
|
2277 filename = Fexpand_file_name (filename, Qnil);
|
|
|
2278 linkname = Fexpand_file_name (linkname, Qnil);
|
|
|
2279
|
|
|
2280 /* If the file name has special constructs in it,
|
|
|
2281 call the corresponding file handler. */
|
|
|
2282 handler = Ffind_file_name_handler (filename, Qmake_symbolic_link);
|
|
|
2283 if (!NILP (handler))
|
|
|
2284 RETURN_UNGCPRO (call4 (handler, Qmake_symbolic_link, filename, linkname,
|
|
|
2285 ok_if_already_exists));
|
|
|
2286
|
|
|
2287 /* If the new link name has special constructs in it,
|
|
|
2288 call the corresponding file handler. */
|
|
|
2289 handler = Ffind_file_name_handler (linkname, Qmake_symbolic_link);
|
|
|
2290 if (!NILP (handler))
|
|
|
2291 RETURN_UNGCPRO (call4 (handler, Qmake_symbolic_link, filename,
|
|
|
2292 linkname, ok_if_already_exists));
|
|
|
2293
|
|
|
2294 if (NILP (ok_if_already_exists)
|
|
|
2295 || INTP (ok_if_already_exists))
|
|
|
2296 barf_or_query_if_file_exists (linkname, "make it a link",
|
|
|
2297 INTP (ok_if_already_exists), 0);
|
|
|
2298
|
|
16
|
2299 unlink ((char *) XSTRING_DATA (linkname));
|
|
|
2300 if (0 > symlink ((char *) XSTRING_DATA (filename),
|
|
|
2301 (char *) XSTRING_DATA (linkname)))
|
|
0
|
2302 {
|
|
|
2303 report_file_error ("Making symbolic link",
|
|
|
2304 list2 (filename, linkname));
|
|
|
2305 }
|
|
|
2306 UNGCPRO;
|
|
|
2307 return Qnil;
|
|
|
2308 }
|
|
|
2309 #endif /* S_IFLNK */
|
|
|
2310
|
|
|
2311 #ifdef VMS
|
|
|
2312
|
|
20
|
2313 DEFUN ("define-logical-name", Fdefine_logical_name, 2, 2,
|
|
|
2314 "sDefine logical name: \nsDefine logical name %s as: ", /*
|
|
0
|
2315 Define the job-wide logical name NAME to have the value STRING.
|
|
|
2316 If STRING is nil or a null string, the logical name NAME is deleted.
|
|
20
|
2317 */
|
|
|
2318 (varname, string))
|
|
0
|
2319 {
|
|
|
2320 CHECK_STRING (varname);
|
|
|
2321 if (NILP (string))
|
|
16
|
2322 delete_logical_name ((char *) XSTRING_DATA (varname));
|
|
0
|
2323 else
|
|
|
2324 {
|
|
|
2325 CHECK_STRING (string);
|
|
|
2326
|
|
16
|
2327 if (XSTRING_LENGTH (string) == 0)
|
|
|
2328 delete_logical_name ((char *) XSTRING_DATA (varname));
|
|
0
|
2329 else
|
|
16
|
2330 define_logical_name ((char *) XSTRING_DATA (varname), (char *) XSTRING_DATA (string));
|
|
0
|
2331 }
|
|
|
2332
|
|
|
2333 return string;
|
|
|
2334 }
|
|
|
2335 #endif /* VMS */
|
|
|
2336
|
|
|
2337 #ifdef HPUX_NET
|
|
|
2338
|
|
20
|
2339 DEFUN ("sysnetunam", Fsysnetunam, 2, 2, 0, /*
|
|
0
|
2340 Open a network connection to PATH using LOGIN as the login string.
|
|
20
|
2341 */
|
|
|
2342 (path, login))
|
|
0
|
2343 {
|
|
|
2344 int netresult;
|
|
|
2345
|
|
|
2346 CHECK_STRING (path);
|
|
|
2347 CHECK_STRING (login);
|
|
|
2348
|
|
|
2349 /* netunam, being a strange-o system call only used once, is not
|
|
|
2350 encapsulated. */
|
|
|
2351 {
|
|
|
2352 char *path_ext;
|
|
|
2353 char *login_ext;
|
|
|
2354
|
|
|
2355 GET_C_STRING_FILENAME_DATA_ALLOCA (path, path_ext);
|
|
|
2356 GET_C_STRING_EXT_DATA_ALLOCA (login, FORMAT_OS, login_ext);
|
|
|
2357
|
|
|
2358 netresult = netunam (path_ext, login_ext);
|
|
|
2359 }
|
|
|
2360
|
|
|
2361 if (netresult == -1)
|
|
|
2362 return Qnil;
|
|
|
2363 else
|
|
|
2364 return Qt;
|
|
|
2365 }
|
|
|
2366 #endif /* HPUX_NET */
|
|
|
2367
|
|
20
|
2368 DEFUN ("file-name-absolute-p", Ffile_name_absolute_p, 1, 1, 0, /*
|
|
0
|
2369 Return t if file FILENAME specifies an absolute path name.
|
|
|
2370 On Unix, this is a name starting with a `/' or a `~'.
|
|
20
|
2371 */
|
|
|
2372 (filename))
|
|
0
|
2373 {
|
|
116
|
2374 /* This function does not GC */
|
|
0
|
2375 Bufbyte *ptr;
|
|
|
2376
|
|
|
2377 CHECK_STRING (filename);
|
|
16
|
2378 ptr = XSTRING_DATA (filename);
|
|
0
|
2379 if (IS_DIRECTORY_SEP (*ptr) || *ptr == '~'
|
|
|
2380 #ifdef VMS
|
|
|
2381 /* ??? This criterion is probably wrong for '<'. */
|
|
|
2382 || strchr (ptr, ':') || strchr (ptr, '<')
|
|
|
2383 || (*ptr == '[' && (ptr[1] != '-' || (ptr[2] != '.' && ptr[2] != ']'))
|
|
|
2384 && ptr[1] != '.')
|
|
|
2385 #endif /* VMS */
|
|
|
2386 #ifdef DOS_NT
|
|
|
2387 || (*ptr != 0 && ptr[1] == ':' && (ptr[2] == '/' || ptr[2] == '\\'))
|
|
|
2388 #endif
|
|
|
2389 )
|
|
|
2390 return Qt;
|
|
|
2391 else
|
|
|
2392 return Qnil;
|
|
|
2393 }
|
|
|
2394
|
|
|
2395 /* Return nonzero if file FILENAME exists and can be executed. */
|
|
|
2396
|
|
|
2397 static int
|
|
|
2398 check_executable (char *filename)
|
|
|
2399 {
|
|
|
2400 #ifdef DOS_NT
|
|
|
2401 int len = strlen (filename);
|
|
|
2402 char *suffix;
|
|
|
2403 struct stat st;
|
|
|
2404 if (stat (filename, &st) < 0)
|
|
|
2405 return 0;
|
|
|
2406 return (S_ISREG (st.st_mode)
|
|
|
2407 && len >= 5
|
|
|
2408 && (stricmp ((suffix = filename + len-4), ".com") == 0
|
|
|
2409 || stricmp (suffix, ".exe") == 0
|
|
|
2410 || stricmp (suffix, ".bat") == 0)
|
|
|
2411 || (st.st_mode & S_IFMT) == S_IFDIR);
|
|
|
2412 #else /* not DOS_NT */
|
|
|
2413 #ifdef HAVE_EACCESS
|
|
|
2414 return (eaccess (filename, 1) >= 0);
|
|
|
2415 #else
|
|
|
2416 /* Access isn't quite right because it uses the real uid
|
|
|
2417 and we really want to test with the effective uid.
|
|
|
2418 But Unix doesn't give us a right way to do it. */
|
|
|
2419 return (access (filename, 1) >= 0);
|
|
|
2420 #endif
|
|
|
2421 #endif /* not DOS_NT */
|
|
|
2422 }
|
|
|
2423
|
|
|
2424 /* Return nonzero if file FILENAME exists and can be written. */
|
|
|
2425
|
|
|
2426 static int
|
|
|
2427 check_writable (CONST char *filename)
|
|
|
2428 {
|
|
|
2429 #ifdef MSDOS
|
|
|
2430 struct stat st;
|
|
|
2431 if (stat (filename, &st) < 0)
|
|
|
2432 return 0;
|
|
|
2433 return (st.st_mode & S_IWRITE || (st.st_mode & S_IFMT) == S_IFDIR);
|
|
|
2434 #else /* not MSDOS */
|
|
|
2435 #ifdef HAVE_EACCESS
|
|
|
2436 return (eaccess (filename, 2) >= 0);
|
|
|
2437 #else
|
|
|
2438 /* Access isn't quite right because it uses the real uid
|
|
|
2439 and we really want to test with the effective uid.
|
|
|
2440 But Unix doesn't give us a right way to do it.
|
|
|
2441 Opening with O_WRONLY could work for an ordinary file,
|
|
|
2442 but would lose for directories. */
|
|
|
2443 return (access (filename, 2) >= 0);
|
|
|
2444 #endif
|
|
|
2445 #endif /* not MSDOS */
|
|
|
2446 }
|
|
|
2447
|
|
20
|
2448 DEFUN ("file-exists-p", Ffile_exists_p, 1, 1, 0, /*
|
|
0
|
2449 Return t if file FILENAME exists. (This does not mean you can read it.)
|
|
|
2450 See also `file-readable-p' and `file-attributes'.
|
|
20
|
2451 */
|
|
|
2452 (filename))
|
|
0
|
2453 {
|
|
116
|
2454 /* This function can call lisp */
|
|
0
|
2455 Lisp_Object abspath;
|
|
|
2456 Lisp_Object handler;
|
|
|
2457 struct stat statbuf;
|
|
|
2458 struct gcpro gcpro1;
|
|
|
2459
|
|
|
2460 CHECK_STRING (filename);
|
|
|
2461 abspath = Fexpand_file_name (filename, Qnil);
|
|
|
2462
|
|
|
2463 /* If the file name has special constructs in it,
|
|
|
2464 call the corresponding file handler. */
|
|
|
2465 GCPRO1 (abspath);
|
|
|
2466 handler = Ffind_file_name_handler (abspath, Qfile_exists_p);
|
|
|
2467 UNGCPRO;
|
|
|
2468 if (!NILP (handler))
|
|
|
2469 return call2 (handler, Qfile_exists_p, abspath);
|
|
|
2470
|
|
16
|
2471 if (stat ((char *) XSTRING_DATA (abspath), &statbuf) >= 0)
|
|
0
|
2472 return (Qt);
|
|
|
2473 else
|
|
|
2474 return (Qnil);
|
|
|
2475 }
|
|
|
2476
|
|
20
|
2477 DEFUN ("file-executable-p", Ffile_executable_p, 1, 1, 0, /*
|
|
0
|
2478 Return t if FILENAME can be executed by you.
|
|
|
2479 For a directory, this means you can access files in that directory.
|
|
20
|
2480 */
|
|
|
2481 (filename))
|
|
70
|
2482
|
|
0
|
2483 {
|
|
116
|
2484 /* This function can call lisp */
|
|
0
|
2485 Lisp_Object abspath;
|
|
|
2486 Lisp_Object handler;
|
|
|
2487 struct gcpro gcpro1;
|
|
|
2488
|
|
|
2489 CHECK_STRING (filename);
|
|
|
2490 abspath = Fexpand_file_name (filename, Qnil);
|
|
|
2491
|
|
|
2492 /* If the file name has special constructs in it,
|
|
|
2493 call the corresponding file handler. */
|
|
|
2494 GCPRO1 (abspath);
|
|
|
2495 handler = Ffind_file_name_handler (abspath, Qfile_executable_p);
|
|
|
2496 UNGCPRO;
|
|
|
2497 if (!NILP (handler))
|
|
|
2498 return call2 (handler, Qfile_executable_p, abspath);
|
|
|
2499
|
|
16
|
2500 return (check_executable ((char *) XSTRING_DATA (abspath))
|
|
0
|
2501 ? Qt : Qnil);
|
|
|
2502 }
|
|
|
2503
|
|
20
|
2504 DEFUN ("file-readable-p", Ffile_readable_p, 1, 1, 0, /*
|
|
0
|
2505 Return t if file FILENAME exists and you can read it.
|
|
|
2506 See also `file-exists-p' and `file-attributes'.
|
|
20
|
2507 */
|
|
|
2508 (filename))
|
|
0
|
2509 {
|
|
116
|
2510 /* This function can call lisp */
|
|
0
|
2511 Lisp_Object abspath;
|
|
|
2512 Lisp_Object handler;
|
|
|
2513 int desc;
|
|
|
2514 struct gcpro gcpro1;
|
|
|
2515
|
|
70
|
2516 GCPRO1 (filename);
|
|
0
|
2517 CHECK_STRING (filename);
|
|
|
2518 abspath = Fexpand_file_name (filename, Qnil);
|
|
70
|
2519 UNGCPRO;
|
|
0
|
2520
|
|
|
2521 /* If the file name has special constructs in it,
|
|
|
2522 call the corresponding file handler. */
|
|
|
2523 GCPRO1 (abspath);
|
|
|
2524 handler = Ffind_file_name_handler (abspath, Qfile_readable_p);
|
|
|
2525 UNGCPRO;
|
|
|
2526 if (!NILP (handler))
|
|
|
2527 return call2 (handler, Qfile_readable_p, abspath);
|
|
|
2528
|
|
16
|
2529 desc = open ((char *) XSTRING_DATA (abspath), O_RDONLY, 0);
|
|
0
|
2530 if (desc < 0)
|
|
|
2531 return Qnil;
|
|
|
2532 close (desc);
|
|
|
2533 return Qt;
|
|
|
2534 }
|
|
|
2535
|
|
|
2536 /* Having this before file-symlink-p mysteriously caused it to be forgotten
|
|
|
2537 on the RT/PC. */
|
|
20
|
2538 DEFUN ("file-writable-p", Ffile_writable_p, 1, 1, 0, /*
|
|
0
|
2539 Return t if file FILENAME can be written or created by you.
|
|
20
|
2540 */
|
|
|
2541 (filename))
|
|
0
|
2542 {
|
|
116
|
2543 /* This function can call lisp */
|
|
0
|
2544 Lisp_Object abspath, dir;
|
|
|
2545 Lisp_Object handler;
|
|
|
2546 struct stat statbuf;
|
|
|
2547 struct gcpro gcpro1;
|
|
|
2548
|
|
|
2549 CHECK_STRING (filename);
|
|
|
2550 abspath = Fexpand_file_name (filename, Qnil);
|
|
|
2551
|
|
|
2552 /* If the file name has special constructs in it,
|
|
|
2553 call the corresponding file handler. */
|
|
|
2554 GCPRO1 (abspath);
|
|
|
2555 handler = Ffind_file_name_handler (abspath, Qfile_writable_p);
|
|
|
2556 UNGCPRO;
|
|
|
2557 if (!NILP (handler))
|
|
|
2558 return call2 (handler, Qfile_writable_p, abspath);
|
|
|
2559
|
|
16
|
2560 if (stat ((char *) XSTRING_DATA (abspath), &statbuf) >= 0)
|
|
|
2561 return (check_writable ((char *) XSTRING_DATA (abspath))
|
|
0
|
2562 ? Qt : Qnil);
|
|
|
2563
|
|
|
2564
|
|
114
|
2565 GCPRO1 (abspath);
|
|
0
|
2566 dir = Ffile_name_directory (abspath);
|
|
114
|
2567 UNGCPRO;
|
|
0
|
2568 #if defined (VMS) || defined (MSDOS)
|
|
|
2569 if (!NILP (dir))
|
|
114
|
2570 {
|
|
|
2571 GCPRO1(dir);
|
|
|
2572 dir = Fdirectory_file_name (dir);
|
|
|
2573 UNGCPRO;
|
|
|
2574 }
|
|
0
|
2575 #endif /* VMS or MSDOS */
|
|
16
|
2576 return (check_writable (!NILP (dir) ? (char *) XSTRING_DATA (dir)
|
|
0
|
2577 : "")
|
|
|
2578 ? Qt : Qnil);
|
|
|
2579 }
|
|
|
2580
|
|
20
|
2581 DEFUN ("file-symlink-p", Ffile_symlink_p, 1, 1, 0, /*
|
|
0
|
2582 Return non-nil if file FILENAME is the name of a symbolic link.
|
|
|
2583 The value is the name of the file to which it is linked.
|
|
|
2584 Otherwise returns nil.
|
|
20
|
2585 */
|
|
|
2586 (filename))
|
|
0
|
2587 {
|
|
116
|
2588 /* This function can call lisp */
|
|
0
|
2589 #ifdef S_IFLNK
|
|
|
2590 char *buf;
|
|
|
2591 int bufsize;
|
|
|
2592 int valsize;
|
|
|
2593 Lisp_Object val;
|
|
|
2594 Lisp_Object handler;
|
|
|
2595 struct gcpro gcpro1;
|
|
|
2596
|
|
|
2597 CHECK_STRING (filename);
|
|
|
2598 filename = Fexpand_file_name (filename, Qnil);
|
|
|
2599
|
|
|
2600 /* If the file name has special constructs in it,
|
|
|
2601 call the corresponding file handler. */
|
|
116
|
2602 GCPRO1 (filename);
|
|
0
|
2603 handler = Ffind_file_name_handler (filename, Qfile_symlink_p);
|
|
116
|
2604 UNGCPRO;
|
|
0
|
2605 if (!NILP (handler))
|
|
|
2606 return call2 (handler, Qfile_symlink_p, filename);
|
|
|
2607
|
|
|
2608 bufsize = 100;
|
|
|
2609 while (1)
|
|
|
2610 {
|
|
|
2611 buf = (char *) xmalloc (bufsize);
|
|
|
2612 memset (buf, 0, bufsize);
|
|
16
|
2613 valsize = readlink ((char *) XSTRING_DATA (filename),
|
|
0
|
2614 buf, bufsize);
|
|
|
2615 if (valsize < bufsize) break;
|
|
|
2616 /* Buffer was not long enough */
|
|
|
2617 xfree (buf);
|
|
|
2618 bufsize *= 2;
|
|
|
2619 }
|
|
|
2620 if (valsize == -1)
|
|
|
2621 {
|
|
|
2622 xfree (buf);
|
|
|
2623 return Qnil;
|
|
|
2624 }
|
|
|
2625 val = make_string ((Bufbyte *) buf, valsize);
|
|
|
2626 xfree (buf);
|
|
|
2627 return val;
|
|
|
2628 #else /* not S_IFLNK */
|
|
|
2629 return Qnil;
|
|
|
2630 #endif /* not S_IFLNK */
|
|
|
2631 }
|
|
|
2632
|
|
20
|
2633 DEFUN ("file-directory-p", Ffile_directory_p, 1, 1, 0, /*
|
|
0
|
2634 Return t if file FILENAME is the name of a directory as a file.
|
|
|
2635 A directory name spec may be given instead; then the value is t
|
|
|
2636 if the directory so specified exists and really is a directory.
|
|
20
|
2637 */
|
|
|
2638 (filename))
|
|
0
|
2639 {
|
|
116
|
2640 /* This function can call lisp */
|
|
0
|
2641 Lisp_Object abspath;
|
|
|
2642 struct stat st;
|
|
|
2643 Lisp_Object handler;
|
|
|
2644 struct gcpro gcpro1;
|
|
|
2645
|
|
114
|
2646 GCPRO1 (current_buffer->directory);
|
|
0
|
2647 abspath = expand_and_dir_to_file (filename,
|
|
|
2648 current_buffer->directory);
|
|
|
2649 UNGCPRO;
|
|
|
2650
|
|
|
2651 /* If the file name has special constructs in it,
|
|
|
2652 call the corresponding file handler. */
|
|
|
2653 GCPRO1 (abspath);
|
|
|
2654 handler = Ffind_file_name_handler (abspath, Qfile_directory_p);
|
|
|
2655 UNGCPRO;
|
|
|
2656 if (!NILP (handler))
|
|
|
2657 return call2 (handler, Qfile_directory_p, abspath);
|
|
|
2658
|
|
16
|
2659 if (stat ((char *) XSTRING_DATA (abspath), &st) < 0)
|
|
0
|
2660 return Qnil;
|
|
|
2661 return (st.st_mode & S_IFMT) == S_IFDIR ? Qt : Qnil;
|
|
|
2662 }
|
|
|
2663
|
|
20
|
2664 DEFUN ("file-accessible-directory-p", Ffile_accessible_directory_p, 1, 1, 0, /*
|
|
0
|
2665 Return t if file FILENAME is the name of a directory as a file,
|
|
|
2666 and files in that directory can be opened by you. In order to use a
|
|
|
2667 directory as a buffer's current directory, this predicate must return true.
|
|
|
2668 A directory name spec may be given instead; then the value is t
|
|
|
2669 if the directory so specified exists and really is a readable and
|
|
|
2670 searchable directory.
|
|
20
|
2671 */
|
|
|
2672 (filename))
|
|
0
|
2673 {
|
|
116
|
2674 /* This function can call lisp */
|
|
0
|
2675 Lisp_Object handler;
|
|
|
2676
|
|
|
2677 /* If the file name has special constructs in it,
|
|
|
2678 call the corresponding file handler. */
|
|
|
2679 handler = Ffind_file_name_handler (filename, Qfile_accessible_directory_p);
|
|
|
2680 if (!NILP (handler))
|
|
|
2681 return call2 (handler, Qfile_accessible_directory_p,
|
|
|
2682 filename);
|
|
|
2683
|
|
|
2684 if (NILP (Ffile_directory_p (filename)))
|
|
|
2685 return (Qnil);
|
|
116
|
2686 else
|
|
|
2687 return Ffile_executable_p (filename);
|
|
0
|
2688 }
|
|
|
2689
|
|
20
|
2690 DEFUN ("file-regular-p", Ffile_regular_p, 1, 1, 0, /*
|
|
0
|
2691 "Return t if file FILENAME is the name of a regular file.
|
|
|
2692 This is the sort of file that holds an ordinary stream of data bytes.
|
|
20
|
2693 */
|
|
|
2694 (filename))
|
|
0
|
2695 {
|
|
116
|
2696 /* This function can call lisp */
|
|
114
|
2697 Lisp_Object abspath;
|
|
0
|
2698 struct stat st;
|
|
|
2699 Lisp_Object handler;
|
|
114
|
2700 struct gcpro gcpro1;
|
|
|
2701
|
|
|
2702 GCPRO1 (current_buffer->directory);
|
|
0
|
2703 abspath = expand_and_dir_to_file (filename, current_buffer->directory);
|
|
114
|
2704 UNGCPRO;
|
|
0
|
2705
|
|
|
2706 /* If the file name has special constructs in it,
|
|
|
2707 call the corresponding file handler. */
|
|
114
|
2708 GCPRO1 (abspath);
|
|
0
|
2709 handler = Ffind_file_name_handler (abspath, Qfile_regular_p);
|
|
114
|
2710 UNGCPRO;
|
|
0
|
2711 if (!NILP (handler))
|
|
|
2712 return call2 (handler, Qfile_regular_p, abspath);
|
|
|
2713
|
|
16
|
2714 if (stat ((char *) XSTRING_DATA (abspath), &st) < 0)
|
|
0
|
2715 return Qnil;
|
|
|
2716 return (st.st_mode & S_IFMT) == S_IFREG ? Qt : Qnil;
|
|
|
2717 }
|
|
|
2718
|
|
20
|
2719 DEFUN ("file-modes", Ffile_modes, 1, 1, 0, /*
|
|
0
|
2720 Return mode bits of FILE, as an integer.
|
|
20
|
2721 */
|
|
|
2722 (filename))
|
|
0
|
2723 {
|
|
116
|
2724 /* This function can call lisp */
|
|
0
|
2725 Lisp_Object abspath;
|
|
|
2726 struct stat st;
|
|
|
2727 Lisp_Object handler;
|
|
|
2728 struct gcpro gcpro1;
|
|
|
2729
|
|
114
|
2730 GCPRO1 (current_buffer->directory);
|
|
0
|
2731 abspath = expand_and_dir_to_file (filename,
|
|
|
2732 current_buffer->directory);
|
|
|
2733 UNGCPRO;
|
|
|
2734
|
|
|
2735 /* If the file name has special constructs in it,
|
|
|
2736 call the corresponding file handler. */
|
|
|
2737 GCPRO1 (abspath);
|
|
|
2738 handler = Ffind_file_name_handler (abspath, Qfile_modes);
|
|
|
2739 UNGCPRO;
|
|
|
2740 if (!NILP (handler))
|
|
|
2741 return call2 (handler, Qfile_modes, abspath);
|
|
|
2742
|
|
16
|
2743 if (stat ((char *) XSTRING_DATA (abspath), &st) < 0)
|
|
0
|
2744 return Qnil;
|
|
|
2745 #ifdef DOS_NT
|
|
100
|
2746 if (check_executable (XSTRING (abspath)->_data))
|
|
0
|
2747 st.st_mode |= S_IEXEC;
|
|
|
2748 #endif /* DOS_NT */
|
|
|
2749
|
|
|
2750 return make_int (st.st_mode & 07777);
|
|
|
2751 }
|
|
|
2752
|
|
20
|
2753 DEFUN ("set-file-modes", Fset_file_modes, 2, 2, 0, /*
|
|
0
|
2754 Set mode bits of FILE to MODE (an integer).
|
|
|
2755 Only the 12 low bits of MODE are used.
|
|
20
|
2756 */
|
|
|
2757 (filename, mode))
|
|
0
|
2758 {
|
|
116
|
2759 /* This function can call lisp */
|
|
0
|
2760 Lisp_Object abspath;
|
|
|
2761 Lisp_Object handler;
|
|
114
|
2762 struct gcpro gcpro1;
|
|
0
|
2763
|
|
114
|
2764 GCPRO1 (current_buffer->directory);
|
|
0
|
2765 abspath = Fexpand_file_name (filename, current_buffer->directory);
|
|
116
|
2766 UNGCPRO;
|
|
|
2767
|
|
70
|
2768 CHECK_INT (mode);
|
|
44
|
2769
|
|
0
|
2770 /* If the file name has special constructs in it,
|
|
|
2771 call the corresponding file handler. */
|
|
|
2772 GCPRO1 (abspath);
|
|
|
2773 handler = Ffind_file_name_handler (abspath, Qset_file_modes);
|
|
|
2774 UNGCPRO;
|
|
|
2775 if (!NILP (handler))
|
|
|
2776 return call3 (handler, Qset_file_modes, abspath, mode);
|
|
|
2777
|
|
16
|
2778 if (chmod ((char *) XSTRING_DATA (abspath), XINT (mode)) < 0)
|
|
0
|
2779 report_file_error ("Doing chmod", Fcons (abspath, Qnil));
|
|
|
2780
|
|
|
2781 return Qnil;
|
|
|
2782 }
|
|
|
2783
|
|
20
|
2784 DEFUN ("set-default-file-modes", Fset_default_file_modes, 1, 1, 0, /*
|
|
0
|
2785 Set the file permission bits for newly created files.
|
|
|
2786 MASK should be an integer; if a permission's bit in MASK is 1,
|
|
|
2787 subsequently created files will not have that permission enabled.
|
|
|
2788 Only the low 9 bits are used.
|
|
|
2789 This setting is inherited by subprocesses.
|
|
20
|
2790 */
|
|
|
2791 (mode))
|
|
0
|
2792 {
|
|
|
2793 CHECK_INT (mode);
|
|
|
2794
|
|
|
2795 umask ((~ XINT (mode)) & 0777);
|
|
|
2796
|
|
|
2797 return Qnil;
|
|
|
2798 }
|
|
|
2799
|
|
20
|
2800 DEFUN ("default-file-modes", Fdefault_file_modes, 0, 0, 0, /*
|
|
0
|
2801 Return the default file protection for created files.
|
|
|
2802 The umask value determines which permissions are enabled in newly
|
|
|
2803 created files. If a permission's bit in the umask is 1, subsequently
|
|
|
2804 created files will not have that permission enabled.
|
|
20
|
2805 */
|
|
|
2806 ())
|
|
0
|
2807 {
|
|
|
2808 int mode;
|
|
|
2809
|
|
|
2810 mode = umask (0);
|
|
|
2811 umask (mode);
|
|
|
2812
|
|
|
2813 return make_int ((~ mode) & 0777);
|
|
|
2814 }
|
|
|
2815
|
|
|
2816 #ifndef VMS
|
|
20
|
2817 DEFUN ("unix-sync", Funix_sync, 0, 0, "", /*
|
|
0
|
2818 Tell Unix to finish all pending disk updates.
|
|
20
|
2819 */
|
|
|
2820 ())
|
|
0
|
2821 {
|
|
100
|
2822 #ifndef WINDOWSNT
|
|
0
|
2823 sync ();
|
|
100
|
2824 #endif
|
|
0
|
2825 return Qnil;
|
|
|
2826 }
|
|
|
2827 #endif /* !VMS */
|
|
|
2828
|
|
|
2829
|
|
20
|
2830 DEFUN ("file-newer-than-file-p", Ffile_newer_than_file_p, 2, 2, 0, /*
|
|
0
|
2831 Return t if file FILE1 is newer than file FILE2.
|
|
|
2832 If FILE1 does not exist, the answer is nil;
|
|
|
2833 otherwise, if FILE2 does not exist, the answer is t.
|
|
20
|
2834 */
|
|
|
2835 (file1, file2))
|
|
0
|
2836 {
|
|
116
|
2837 /* This function can call lisp */
|
|
0
|
2838 Lisp_Object abspath1, abspath2;
|
|
|
2839 struct stat st;
|
|
|
2840 int mtime1;
|
|
|
2841 Lisp_Object handler;
|
|
114
|
2842 struct gcpro gcpro1, gcpro2, gcpro3;
|
|
0
|
2843
|
|
|
2844 CHECK_STRING (file1);
|
|
|
2845 CHECK_STRING (file2);
|
|
|
2846
|
|
|
2847 abspath1 = Qnil;
|
|
114
|
2848 abspath2 = Qnil;
|
|
|
2849
|
|
|
2850 GCPRO3 (abspath1, abspath2, current_buffer->directory);
|
|
|
2851 abspath1 = expand_and_dir_to_file (file1, current_buffer->directory);
|
|
|
2852 abspath2 = expand_and_dir_to_file (file2, current_buffer->directory);
|
|
0
|
2853
|
|
|
2854 /* If the file name has special constructs in it,
|
|
|
2855 call the corresponding file handler. */
|
|
|
2856 handler = Ffind_file_name_handler (abspath1, Qfile_newer_than_file_p);
|
|
|
2857 if (NILP (handler))
|
|
|
2858 handler = Ffind_file_name_handler (abspath2, Qfile_newer_than_file_p);
|
|
|
2859 UNGCPRO;
|
|
|
2860 if (!NILP (handler))
|
|
|
2861 return call3 (handler, Qfile_newer_than_file_p, abspath1,
|
|
|
2862 abspath2);
|
|
|
2863
|
|
16
|
2864 if (stat ((char *) XSTRING_DATA (abspath1), &st) < 0)
|
|
0
|
2865 return Qnil;
|
|
|
2866
|
|
|
2867 mtime1 = st.st_mtime;
|
|
|
2868
|
|
16
|
2869 if (stat ((char *) XSTRING_DATA (abspath2), &st) < 0)
|
|
0
|
2870 return Qt;
|
|
|
2871
|
|
|
2872 return (mtime1 > st.st_mtime) ? Qt : Qnil;
|
|
|
2873 }
|
|
|
2874
|
|
|
2875
|
|
|
2876 #ifdef DOS_NT
|
|
|
2877 Lisp_Object Qfind_buffer_file_type;
|
|
|
2878 #endif /* DOS_NT */
|
|
|
2879
|
|
2
|
2880 /* Stack sizes > 2**16 is a good way to elicit compiler bugs */
|
|
|
2881 /* #define READ_BUF_SIZE (2 << 16) */
|
|
|
2882 #define READ_BUF_SIZE (1 << 15)
|
|
0
|
2883
|
|
20
|
2884 DEFUN ("insert-file-contents-internal",
|
|
70
|
2885 Finsert_file_contents_internal, 1, 7, 0, /*
|
|
|
2886 Insert contents of file FILENAME after point; no coding-system frobbing.
|
|
|
2887 This function is identical to `insert-file-contents' except for the
|
|
|
2888 handling of the CODESYS and USED-CODESYS arguments under
|
|
|
2889 XEmacs/Mule. (When Mule support is not present, both functions are
|
|
|
2890 identical and ignore the CODESYS and USED-CODESYS arguments.)
|
|
|
2891
|
|
|
2892 If support for Mule exists in this Emacs, the file is decoded according
|
|
|
2893 to CODESYS; if omitted, no conversion happens. If USED-CODESYS is non-nil,
|
|
|
2894 it should be a symbol, and the actual coding system that was used for the
|
|
|
2895 decoding is stored into it. It will in general be different from CODESYS
|
|
|
2896 if CODESYS specifies automatic encoding detection or end-of-line detection.
|
|
|
2897
|
|
|
2898 Currently BEG and END refer to byte positions (as opposed to character
|
|
|
2899 positions), even in Mule. (Fixing this is very difficult.)
|
|
20
|
2900 */
|
|
70
|
2901 (filename, visit, beg, end, replace, codesys, used_codesys))
|
|
0
|
2902 {
|
|
116
|
2903 /* This function can call lisp */
|
|
|
2904 /* #### dmoore - this function hasn't been checked for gc recently */
|
|
0
|
2905 struct stat st;
|
|
|
2906 int fd;
|
|
|
2907 int saverrno = 0;
|
|
|
2908 Charcount inserted = 0;
|
|
|
2909 int speccount;
|
|
114
|
2910 struct gcpro gcpro1, gcpro2, gcpro3, gcpro4, gcpro5;
|
|
0
|
2911 Lisp_Object handler = Qnil, val;
|
|
|
2912 int total;
|
|
|
2913 Bufbyte read_buf[READ_BUF_SIZE];
|
|
|
2914 int mc_count;
|
|
|
2915 struct buffer *buf = current_buffer;
|
|
114
|
2916 Lisp_Object curbuf;
|
|
0
|
2917 int not_regular = 0;
|
|
|
2918
|
|
|
2919 if (buf->base_buffer && ! NILP (visit))
|
|
|
2920 error ("Cannot do file visiting in an indirect buffer");
|
|
|
2921
|
|
|
2922 /* No need to call Fbarf_if_buffer_read_only() here.
|
|
|
2923 That's called in begin_multiple_change() or wherever. */
|
|
|
2924
|
|
|
2925 val = Qnil;
|
|
|
2926
|
|
114
|
2927 /* #### dmoore - should probably check in various places to see if
|
|
|
2928 curbuf was killed and if so signal an error? */
|
|
|
2929
|
|
|
2930 XSETBUFFER (curbuf, buf);
|
|
|
2931
|
|
|
2932 GCPRO5 (filename, val, visit, handler, curbuf);
|
|
0
|
2933
|
|
|
2934 mc_count = (NILP (replace)) ?
|
|
|
2935 begin_multiple_change (buf, BUF_PT (buf), BUF_PT (buf)) :
|
|
|
2936 begin_multiple_change (buf, BUF_BEG (buf), BUF_Z (buf));
|
|
|
2937
|
|
|
2938 speccount = specpdl_depth (); /* begin_multiple_change also adds
|
|
|
2939 an unwind_protect */
|
|
|
2940
|
|
|
2941 filename = Fexpand_file_name (filename, Qnil);
|
|
|
2942
|
|
|
2943 /* If the file name has special constructs in it,
|
|
|
2944 call the corresponding file handler. */
|
|
|
2945 handler = Ffind_file_name_handler (filename, Qinsert_file_contents);
|
|
|
2946 if (!NILP (handler))
|
|
|
2947 {
|
|
74
|
2948 val = call6 (handler, Qinsert_file_contents, filename,
|
|
|
2949 visit, beg, end, replace);
|
|
0
|
2950 goto handled;
|
|
|
2951 }
|
|
|
2952
|
|
70
|
2953 #ifdef MULE
|
|
|
2954 if (!NILP (used_codesys))
|
|
|
2955 CHECK_SYMBOL (used_codesys);
|
|
|
2956 #endif
|
|
|
2957
|
|
0
|
2958 if ( (!NILP (beg) || !NILP (end)) && !NILP (visit) )
|
|
|
2959 error ("Attempt to visit less than an entire file");
|
|
|
2960
|
|
|
2961 if (!NILP (beg))
|
|
|
2962 CHECK_INT (beg);
|
|
|
2963 else
|
|
|
2964 beg = Qzero;
|
|
|
2965
|
|
|
2966 if (!NILP (end))
|
|
|
2967 CHECK_INT (end);
|
|
|
2968
|
|
|
2969 fd = -1;
|
|
|
2970
|
|
|
2971 #ifndef APOLLO
|
|
16
|
2972 if (stat ((char *) XSTRING_DATA (filename), &st) < 0)
|
|
0
|
2973 #else /* APOLLO */
|
|
16
|
2974 if ((fd = open ((char *) XSTRING_DATA (filename), O_RDONLY, 0)) < 0
|
|
0
|
2975 || fstat (fd, &st) < 0)
|
|
|
2976 #endif /* APOLLO */
|
|
|
2977 {
|
|
|
2978 if (fd >= 0) close (fd);
|
|
|
2979 badopen:
|
|
|
2980 if (NILP (visit))
|
|
|
2981 report_file_error ("Opening input file",
|
|
|
2982 Fcons (filename, Qnil));
|
|
|
2983 st.st_mtime = -1;
|
|
|
2984 goto notfound;
|
|
|
2985 }
|
|
|
2986
|
|
|
2987 #ifdef S_IFREG
|
|
|
2988 /* This code will need to be changed in order to work on named
|
|
|
2989 pipes, and it's probably just not worth it. So we should at
|
|
|
2990 least signal an error. */
|
|
|
2991 if (!S_ISREG (st.st_mode))
|
|
|
2992 {
|
|
|
2993 if (NILP (visit))
|
|
|
2994 {
|
|
|
2995 end_multiple_change (buf, mc_count);
|
|
|
2996
|
|
|
2997 return Fsignal (Qfile_error,
|
|
|
2998 list2 (build_translated_string("not a regular file"),
|
|
|
2999 filename));
|
|
|
3000 }
|
|
|
3001 else
|
|
|
3002 {
|
|
|
3003 not_regular = 1;
|
|
|
3004 goto notfound;
|
|
|
3005 }
|
|
|
3006 }
|
|
|
3007 #endif
|
|
|
3008
|
|
|
3009 if (fd < 0)
|
|
16
|
3010 if ((fd = open ((char *) XSTRING_DATA (filename), O_RDONLY, 0)) < 0)
|
|
0
|
3011 goto badopen;
|
|
|
3012
|
|
|
3013 /* Replacement should preserve point as it preserves markers. */
|
|
|
3014 if (!NILP (replace))
|
|
|
3015 record_unwind_protect (restore_point_unwind, Fpoint_marker (Qnil, Qnil));
|
|
|
3016
|
|
|
3017 record_unwind_protect (close_file_unwind, make_int (fd));
|
|
|
3018
|
|
|
3019 /* Supposedly happens on VMS. */
|
|
|
3020 if (st.st_size < 0)
|
|
|
3021 error ("File size is negative");
|
|
|
3022
|
|
|
3023 if (NILP (end))
|
|
|
3024 {
|
|
|
3025 end = make_int (st.st_size);
|
|
|
3026 if (XINT (end) != st.st_size)
|
|
|
3027 error ("maximum buffer size exceeded");
|
|
|
3028 }
|
|
|
3029
|
|
|
3030 /* If requested, replace the accessible part of the buffer
|
|
|
3031 with the file contents. Avoid replacing text at the
|
|
|
3032 beginning or end of the buffer that matches the file contents;
|
|
|
3033 that preserves markers pointing to the unchanged parts. */
|
|
16
|
3034 #if !defined (DOS_NT) && !defined (MULE)
|
|
0
|
3035 /* The replace-mode code currently only works when the assumption
|
|
|
3036 'one byte == one char' holds true. This fails under MSDOS and
|
|
|
3037 Windows NT (because newlines are represented as CR-LF in text
|
|
20
|
3038 files) and under Mule because files may contain multibyte characters. */
|
|
0
|
3039 # define FSFMACS_SPEEDY_INSERT
|
|
|
3040 #endif
|
|
|
3041 #ifndef FSFMACS_SPEEDY_INSERT
|
|
|
3042 if (!NILP (replace))
|
|
|
3043 {
|
|
|
3044 buffer_delete_range (buf, BUF_BEG (buf), BUF_Z (buf),
|
|
|
3045 !NILP (visit) ? INSDEL_NO_LOCKING : 0);
|
|
|
3046 }
|
|
|
3047 #else /* FSFMACS_SPEEDY_INSERT */
|
|
|
3048 if (!NILP (replace))
|
|
|
3049 {
|
|
|
3050 char buffer[1 << 14];
|
|
|
3051 Bufpos same_at_start = BUF_BEGV (buf);
|
|
|
3052 Bufpos same_at_end = BUF_ZV (buf);
|
|
|
3053 int overlap;
|
|
|
3054
|
|
|
3055 /* Count how many chars at the start of the file
|
|
|
3056 match the text at the beginning of the buffer. */
|
|
|
3057 while (1)
|
|
|
3058 {
|
|
|
3059 int nread;
|
|
|
3060 Bufpos bufpos;
|
|
|
3061
|
|
|
3062 nread = read_allowing_quit (fd, buffer, sizeof buffer);
|
|
|
3063 if (nread < 0)
|
|
|
3064 error ("IO error reading %s: %s",
|
|
16
|
3065 XSTRING_DATA (filename), strerror (errno));
|
|
0
|
3066 else if (nread == 0)
|
|
|
3067 break;
|
|
|
3068 bufpos = 0;
|
|
|
3069 while (bufpos < nread && same_at_start < BUF_ZV (buf)
|
|
|
3070 && BUF_FETCH_CHAR (buf, same_at_start) == buffer[bufpos])
|
|
|
3071 same_at_start++, bufpos++;
|
|
|
3072 /* If we found a discrepancy, stop the scan.
|
|
|
3073 Otherwise loop around and scan the next bufferfull. */
|
|
|
3074 if (bufpos != nread)
|
|
|
3075 break;
|
|
|
3076 }
|
|
|
3077 /* If the file matches the buffer completely,
|
|
|
3078 there's no need to replace anything. */
|
|
|
3079 if (same_at_start - BUF_BEGV (buf) == st.st_size)
|
|
|
3080 {
|
|
|
3081 close (fd);
|
|
|
3082 unbind_to (speccount, Qnil);
|
|
|
3083 /* Truncate the buffer to the size of the file. */
|
|
|
3084 buffer_delete_range (buf, same_at_start, same_at_end,
|
|
|
3085 !NILP (visit) ? INSDEL_NO_LOCKING : 0);
|
|
|
3086 goto handled;
|
|
|
3087 }
|
|
|
3088 /* Count how many chars at the end of the file
|
|
|
3089 match the text at the end of the buffer. */
|
|
|
3090 while (1)
|
|
|
3091 {
|
|
|
3092 int total_read, nread;
|
|
|
3093 Bufpos bufpos, curpos, trial;
|
|
|
3094
|
|
|
3095 /* At what file position are we now scanning? */
|
|
|
3096 curpos = st.st_size - (BUF_ZV (buf) - same_at_end);
|
|
|
3097 /* If the entire file matches the buffer tail, stop the scan. */
|
|
|
3098 if (curpos == 0)
|
|
|
3099 break;
|
|
|
3100 /* How much can we scan in the next step? */
|
|
|
3101 trial = min (curpos, sizeof buffer);
|
|
|
3102 if (lseek (fd, curpos - trial, 0) < 0)
|
|
|
3103 report_file_error ("Setting file position",
|
|
|
3104 Fcons (filename, Qnil));
|
|
|
3105
|
|
|
3106 total_read = 0;
|
|
|
3107 while (total_read < trial)
|
|
|
3108 {
|
|
|
3109 nread = read_allowing_quit (fd, buffer + total_read,
|
|
|
3110 trial - total_read);
|
|
|
3111 if (nread <= 0)
|
|
|
3112 error ("IO error reading %s: %s",
|
|
16
|
3113 XSTRING_DATA (filename), strerror (errno));
|
|
0
|
3114 total_read += nread;
|
|
|
3115 }
|
|
|
3116 /* Scan this bufferfull from the end, comparing with
|
|
|
3117 the Emacs buffer. */
|
|
|
3118 bufpos = total_read;
|
|
|
3119 /* Compare with same_at_start to avoid counting some buffer text
|
|
|
3120 as matching both at the file's beginning and at the end. */
|
|
|
3121 while (bufpos > 0 && same_at_end > same_at_start
|
|
|
3122 && BUF_FETCH_CHAR (buf, same_at_end - 1) ==
|
|
|
3123 buffer[bufpos - 1])
|
|
|
3124 same_at_end--, bufpos--;
|
|
|
3125 /* If we found a discrepancy, stop the scan.
|
|
|
3126 Otherwise loop around and scan the preceding bufferfull. */
|
|
|
3127 if (bufpos != 0)
|
|
|
3128 break;
|
|
|
3129 /* If display current starts at beginning of line,
|
|
|
3130 keep it that way. */
|
|
|
3131 if (XBUFFER (XWINDOW (Fselected_window (Qnil))->buffer) == buf)
|
|
|
3132 XWINDOW (Fselected_window (Qnil))->start_at_line_beg =
|
|
|
3133 !NILP (Fbolp (make_buffer (buf)));
|
|
|
3134 }
|
|
|
3135
|
|
|
3136 /* Don't try to reuse the same piece of text twice. */
|
|
|
3137 overlap = same_at_start - BUF_BEGV (buf) -
|
|
|
3138 (same_at_end + st.st_size - BUF_ZV (buf));
|
|
|
3139 if (overlap > 0)
|
|
|
3140 same_at_end += overlap;
|
|
|
3141
|
|
|
3142 /* Arrange to read only the nonmatching middle part of the file. */
|
|
|
3143 beg = make_int (same_at_start - BUF_BEGV (buf));
|
|
|
3144 end = make_int (st.st_size - (BUF_ZV (buf) - same_at_end));
|
|
|
3145
|
|
|
3146 buffer_delete_range (buf, same_at_start, same_at_end,
|
|
|
3147 !NILP (visit) ? INSDEL_NO_LOCKING : 0);
|
|
|
3148 /* Insert from the file at the proper position. */
|
|
|
3149 BUF_SET_PT (buf, same_at_start);
|
|
|
3150 }
|
|
|
3151 #endif /* FSFMACS_SPEEDY_INSERT */
|
|
|
3152
|
|
|
3153 total = XINT (end) - XINT (beg);
|
|
|
3154
|
|
|
3155 if (XINT (beg) != 0
|
|
|
3156 #ifdef FSFMACS_SPEEDY_INSERT
|
|
|
3157 /* why was this here? asked jwz. The reason is that the replace-mode
|
|
|
3158 connivings above will normally put the file pointer other than
|
|
|
3159 where it should be. */
|
|
|
3160 || !NILP (replace)
|
|
|
3161 #endif /* !FSFMACS_SPEEDY_INSERT */
|
|
|
3162 )
|
|
|
3163 {
|
|
|
3164 if (lseek (fd, XINT (beg), 0) < 0)
|
|
|
3165 report_file_error ("Setting file position",
|
|
|
3166 Fcons (filename, Qnil));
|
|
|
3167 }
|
|
|
3168
|
|
|
3169 {
|
|
|
3170 Bufpos cur_point = BUF_PT (buf);
|
|
|
3171 struct gcpro ngcpro1;
|
|
|
3172 Lisp_Object stream = make_filedesc_input_stream (fd, 0, total,
|
|
|
3173 LSTR_ALLOW_QUIT);
|
|
|
3174
|
|
|
3175 NGCPRO1 (stream);
|
|
|
3176 Lstream_set_buffering (XLSTREAM (stream), LSTREAM_BLOCKN_BUFFERED, 65536);
|
|
70
|
3177 #ifdef MULE
|
|
|
3178 stream = make_decoding_input_stream
|
|
|
3179 (XLSTREAM (stream), Fget_coding_system (codesys));
|
|
|
3180 Lstream_set_character_mode (XLSTREAM (stream));
|
|
|
3181 Lstream_set_buffering (XLSTREAM (stream), LSTREAM_BLOCKN_BUFFERED, 65536);
|
|
|
3182 #endif
|
|
0
|
3183
|
|
|
3184 record_unwind_protect (close_stream_unwind, stream);
|
|
|
3185
|
|
16
|
3186 /* No need to limit the amount of stuff we attempt to read. (It would
|
|
|
3187 be incorrect, anyway, when Mule is enabled.) Instead, the limiting
|
|
|
3188 occurs inside of the filedesc stream. */
|
|
0
|
3189 while (1)
|
|
|
3190 {
|
|
|
3191 Bytecount this_len;
|
|
|
3192 Charcount cc_inserted;
|
|
|
3193
|
|
|
3194 QUIT;
|
|
|
3195 this_len = Lstream_read (XLSTREAM (stream), read_buf,
|
|
|
3196 sizeof (read_buf));
|
|
|
3197
|
|
|
3198 if (this_len <= 0)
|
|
|
3199 {
|
|
|
3200 if (this_len < 0)
|
|
|
3201 saverrno = errno;
|
|
|
3202 break;
|
|
|
3203 }
|
|
|
3204
|
|
|
3205 cc_inserted = buffer_insert_raw_string_1 (buf, cur_point, read_buf,
|
|
|
3206 this_len,
|
|
|
3207 !NILP (visit)
|
|
|
3208 ? INSDEL_NO_LOCKING : 0);
|
|
|
3209 inserted += cc_inserted;
|
|
|
3210 cur_point += cc_inserted;
|
|
|
3211 }
|
|
70
|
3212 #ifdef MULE
|
|
|
3213 if (!NILP (used_codesys))
|
|
|
3214 {
|
|
|
3215 Fset (used_codesys,
|
|
|
3216 XCODING_SYSTEM_NAME (decoding_stream_coding_system (XLSTREAM (stream))));
|
|
|
3217 }
|
|
|
3218 #endif
|
|
0
|
3219 NUNGCPRO;
|
|
|
3220 }
|
|
|
3221
|
|
100
|
3222 #if 0
|
|
|
3223 /* XXXX Why the #### ? Bogus anyway. If they are there, display em! */
|
|
0
|
3224 #ifdef DOS_NT
|
|
|
3225 /* Determine file type from name and remove LFs from CR-LFs if the file
|
|
|
3226 is deemed to be a text file. */
|
|
|
3227 {
|
|
|
3228 struct gcpro gcpro1;
|
|
|
3229 GCPRO1 (filename);
|
|
|
3230 buf->buffer_file_type
|
|
|
3231 = call1_in_buffer (buf, Qfind_buffer_file_type, filename);
|
|
|
3232 UNGCPRO;
|
|
|
3233 if (NILP (buf->buffer_file_type))
|
|
|
3234 {
|
|
|
3235 buffer_do_msdos_crlf_to_lf (buf, ####);
|
|
|
3236 }
|
|
|
3237 }
|
|
|
3238 #endif
|
|
100
|
3239 #endif
|
|
0
|
3240
|
|
|
3241 /* Close the file/stream */
|
|
|
3242 unbind_to (speccount, Qnil);
|
|
|
3243
|
|
|
3244 if (saverrno != 0)
|
|
|
3245 {
|
|
|
3246 error ("IO error reading %s: %s",
|
|
16
|
3247 XSTRING_DATA (filename), strerror (saverrno));
|
|
0
|
3248 }
|
|
|
3249
|
|
|
3250 notfound:
|
|
|
3251 handled:
|
|
|
3252
|
|
|
3253 end_multiple_change (buf, mc_count);
|
|
|
3254
|
|
|
3255 if (!NILP (visit))
|
|
|
3256 {
|
|
|
3257 if (!EQ (buf->undo_list, Qt))
|
|
|
3258 buf->undo_list = Qnil;
|
|
|
3259 #ifdef APOLLO
|
|
16
|
3260 stat ((char *) XSTRING_DATA (filename), &st);
|
|
0
|
3261 #endif
|
|
|
3262 if (NILP (handler))
|
|
|
3263 {
|
|
|
3264 buf->modtime = st.st_mtime;
|
|
|
3265 buf->filename = filename;
|
|
|
3266 /* XEmacs addition: */
|
|
|
3267 /* This function used to be in C, ostensibly so that
|
|
|
3268 it could be called here. But that's just silly.
|
|
|
3269 There's no reason C code can't call out to Lisp
|
|
|
3270 code, and it's a lot cleaner this way. */
|
|
|
3271 if (!NILP (Ffboundp (Qcompute_buffer_file_truename)))
|
|
|
3272 call1 (Qcompute_buffer_file_truename, make_buffer (buf));
|
|
|
3273 }
|
|
|
3274 BUF_SAVE_MODIFF (buf) = BUF_MODIFF (buf);
|
|
|
3275 buf->auto_save_modified = BUF_MODIFF (buf);
|
|
|
3276 buf->save_length = make_int (BUF_SIZE (buf));
|
|
|
3277 #ifdef CLASH_DETECTION
|
|
|
3278 if (NILP (handler))
|
|
|
3279 {
|
|
|
3280 if (!NILP (buf->file_truename))
|
|
|
3281 unlock_file (buf->file_truename);
|
|
|
3282 unlock_file (filename);
|
|
|
3283 }
|
|
|
3284 #endif /* CLASH_DETECTION */
|
|
|
3285 if (not_regular)
|
|
|
3286 RETURN_UNGCPRO (Fsignal (Qfile_error,
|
|
|
3287 list2 (build_string ("not a regular file"),
|
|
|
3288 filename)));
|
|
|
3289
|
|
|
3290 /* If visiting nonexistent file, return nil. */
|
|
|
3291 if (buf->modtime == -1)
|
|
|
3292 report_file_error ("Opening input file",
|
|
|
3293 list1 (filename));
|
|
|
3294 }
|
|
|
3295
|
|
|
3296 /* Decode file format */
|
|
|
3297 if (inserted > 0)
|
|
|
3298 {
|
|
|
3299 Lisp_Object insval = call3 (Qformat_decode,
|
|
|
3300 Qnil, make_int (inserted), visit);
|
|
|
3301 CHECK_INT (insval);
|
|
|
3302 inserted = XINT (insval);
|
|
|
3303 }
|
|
|
3304
|
|
|
3305 if (inserted > 0)
|
|
|
3306 {
|
|
|
3307 Lisp_Object p = Vafter_insert_file_functions;
|
|
|
3308 struct gcpro ngcpro1;
|
|
|
3309
|
|
|
3310 NGCPRO1 (p);
|
|
|
3311 while (!NILP (p))
|
|
|
3312 {
|
|
|
3313 Lisp_Object insval =
|
|
|
3314 call1 (Fcar (p), make_int (inserted));
|
|
|
3315 if (!NILP (insval))
|
|
|
3316 {
|
|
|
3317 CHECK_NATNUM (insval);
|
|
|
3318 inserted = XINT (insval);
|
|
|
3319 }
|
|
|
3320 QUIT;
|
|
|
3321 p = Fcdr (p);
|
|
|
3322 }
|
|
|
3323 NUNGCPRO;
|
|
|
3324 }
|
|
|
3325
|
|
|
3326 UNGCPRO;
|
|
|
3327
|
|
|
3328 if (!NILP (val))
|
|
|
3329 return (val);
|
|
|
3330 else
|
|
|
3331 return (list2 (filename, make_int (inserted)));
|
|
|
3332 }
|
|
|
3333
|
|
|
3334
|
|
|
3335 static int a_write (Lisp_Object outstream, Lisp_Object instream, int pos,
|
|
|
3336 Lisp_Object *annot);
|
|
|
3337 static Lisp_Object build_annotations (Lisp_Object start, Lisp_Object end);
|
|
|
3338
|
|
|
3339 /* If build_annotations switched buffers, switch back to BUF.
|
|
|
3340 Kill the temporary buffer that was selected in the meantime. */
|
|
|
3341
|
|
|
3342 static Lisp_Object
|
|
|
3343 build_annotations_unwind (Lisp_Object buf)
|
|
|
3344 {
|
|
|
3345 Lisp_Object tembuf;
|
|
|
3346
|
|
|
3347 if (XBUFFER (buf) == current_buffer)
|
|
|
3348 return Qnil;
|
|
|
3349 tembuf = Fcurrent_buffer ();
|
|
|
3350 Fset_buffer (buf);
|
|
|
3351 Fkill_buffer (tembuf);
|
|
|
3352 return Qnil;
|
|
|
3353 }
|
|
|
3354
|
|
70
|
3355 DEFUN ("write-region-internal", Fwrite_region_internal, 3, 7,
|
|
20
|
3356 "r\nFWrite region to file: ", /*
|
|
70
|
3357 Write current region into specified file; no coding-system frobbing.
|
|
|
3358 This function is identical to `write-region' except for the handling
|
|
|
3359 of the CODESYS argument under XEmacs/Mule. (When Mule support is not
|
|
|
3360 present, both functions are identical and ignore the CODESYS argument.)
|
|
|
3361 If support for Mule exists in this Emacs, the file is encoded according
|
|
|
3362 to the value of CODESYS. If this is nil, no code conversion occurs.
|
|
20
|
3363 */
|
|
70
|
3364 (start, end, filename, append, visit, lockname, codesys))
|
|
0
|
3365 {
|
|
116
|
3366 /* This function can call lisp */
|
|
0
|
3367 int desc;
|
|
|
3368 int failure;
|
|
|
3369 int save_errno = 0;
|
|
|
3370 struct stat st;
|
|
|
3371 Lisp_Object fn;
|
|
|
3372 int speccount = specpdl_depth ();
|
|
|
3373 #ifdef VMS
|
|
|
3374 unsigned char *fname = 0; /* If non-0, original filename (must rename) */
|
|
|
3375 #endif /* VMS */
|
|
|
3376 int visiting_other = STRINGP (visit);
|
|
|
3377 int visiting = (EQ (visit, Qt) || visiting_other);
|
|
|
3378 int quietly = (!visiting && !NILP (visit));
|
|
|
3379 Lisp_Object visit_file = Qnil;
|
|
|
3380 Lisp_Object annotations = Qnil;
|
|
|
3381 struct buffer *given_buffer;
|
|
|
3382 Bufpos start1, end1;
|
|
|
3383
|
|
114
|
3384 /* #### dmoore - if Fexpand_file_name or handlers kill the buffer,
|
|
|
3385 we should signal an error rather than blissfully continuing
|
|
|
3386 along. ARGH, this function is going to lose lose lose. We need
|
|
|
3387 to protect the current_buffer from being destroyed, but the
|
|
|
3388 multiple return points make this a pain in the butt. */
|
|
|
3389
|
|
0
|
3390 #ifdef DOS_NT
|
|
|
3391 int buffer_file_type
|
|
|
3392 = NILP (current_buffer->buffer_file_type) ? O_TEXT : O_BINARY;
|
|
|
3393 #endif /* DOS_NT */
|
|
|
3394
|
|
70
|
3395 #ifdef MULE
|
|
|
3396 codesys = Fget_coding_system (codesys);
|
|
|
3397 #endif /* MULE */
|
|
|
3398
|
|
0
|
3399 if (current_buffer->base_buffer && ! NILP (visit))
|
|
|
3400 error ("Cannot do file visiting in an indirect buffer");
|
|
|
3401
|
|
|
3402 if (!NILP (start) && !STRINGP (start))
|
|
|
3403 get_buffer_range_char (current_buffer, start, end, &start1, &end1, 0);
|
|
|
3404
|
|
|
3405 {
|
|
|
3406 Lisp_Object handler;
|
|
|
3407 struct gcpro gcpro1, gcpro2, gcpro3, gcpro4, gcpro5;
|
|
114
|
3408
|
|
0
|
3409 GCPRO5 (start, filename, visit, visit_file, lockname);
|
|
|
3410
|
|
|
3411 if (visiting_other)
|
|
|
3412 visit_file = Fexpand_file_name (visit, Qnil);
|
|
|
3413 else
|
|
|
3414 visit_file = filename;
|
|
|
3415 filename = Fexpand_file_name (filename, Qnil);
|
|
|
3416
|
|
|
3417 UNGCPRO;
|
|
|
3418
|
|
|
3419 if (NILP (lockname))
|
|
|
3420 lockname = visit_file;
|
|
|
3421
|
|
|
3422 /* If the file name has special constructs in it,
|
|
|
3423 call the corresponding file handler. */
|
|
|
3424 handler = Ffind_file_name_handler (filename, Qwrite_region);
|
|
|
3425 /* If FILENAME has no handler, see if VISIT has one. */
|
|
|
3426 if (NILP (handler) && STRINGP (visit))
|
|
|
3427 handler = Ffind_file_name_handler (visit, Qwrite_region);
|
|
|
3428
|
|
|
3429 if (!NILP (handler))
|
|
|
3430 {
|
|
86
|
3431 Lisp_Object val = call8 (handler, Qwrite_region, start, end,
|
|
|
3432 filename, append, visit, lockname, codesys);
|
|
0
|
3433 if (visiting)
|
|
|
3434 {
|
|
|
3435 BUF_SAVE_MODIFF (current_buffer) = BUF_MODIFF (current_buffer);
|
|
|
3436 current_buffer->save_length =
|
|
|
3437 make_int (BUF_SIZE (current_buffer));
|
|
|
3438 current_buffer->filename = visit_file;
|
|
|
3439 MARK_MODELINE_CHANGED;
|
|
|
3440 }
|
|
|
3441 return val;
|
|
|
3442 }
|
|
|
3443 }
|
|
|
3444
|
|
|
3445 #ifdef CLASH_DETECTION
|
|
|
3446 if (!auto_saving)
|
|
|
3447 {
|
|
114
|
3448 Lisp_Object curbuf;
|
|
|
3449 struct gcpro gcpro1, gcpro2, gcpro3, gcpro4, gcpro5;
|
|
|
3450
|
|
|
3451 XSETBUFFER (curbuf, current_buffer);
|
|
|
3452 GCPRO5 (start, filename, visit_file, lockname, curbuf);
|
|
0
|
3453 lock_file (lockname);
|
|
|
3454 UNGCPRO;
|
|
|
3455 }
|
|
|
3456 #endif /* CLASH_DETECTION */
|
|
|
3457
|
|
|
3458 /* Special kludge to simplify auto-saving. */
|
|
|
3459 if (NILP (start))
|
|
|
3460 {
|
|
|
3461 start1 = BUF_BEG (current_buffer);
|
|
|
3462 end1 = BUF_Z (current_buffer);
|
|
|
3463 }
|
|
|
3464
|
|
|
3465 record_unwind_protect (build_annotations_unwind, Fcurrent_buffer ());
|
|
|
3466
|
|
|
3467 given_buffer = current_buffer;
|
|
|
3468 annotations = build_annotations (start, end);
|
|
|
3469 if (current_buffer != given_buffer)
|
|
|
3470 {
|
|
|
3471 start1 = BUF_BEGV (current_buffer);
|
|
|
3472 end1 = BUF_ZV (current_buffer);
|
|
|
3473 }
|
|
|
3474
|
|
|
3475 fn = filename;
|
|
|
3476 desc = -1;
|
|
|
3477 if (!NILP (append))
|
|
|
3478 #ifdef DOS_NT
|
|
16
|
3479 desc = open ((char *) XSTRING_DATA (fn),
|
|
0
|
3480 (O_WRONLY | buffer_file_type), 0);
|
|
|
3481 #else /* not DOS_NT */
|
|
16
|
3482 desc = open ((char *) XSTRING_DATA (fn), O_WRONLY, 0);
|
|
0
|
3483 #endif /* not DOS_NT */
|
|
|
3484
|
|
|
3485 if (desc < 0)
|
|
|
3486 #ifndef VMS
|
|
|
3487 {
|
|
|
3488 #ifdef DOS_NT
|
|
16
|
3489 desc = open ((char *) XSTRING_DATA (fn),
|
|
0
|
3490 (O_WRONLY | O_TRUNC | O_CREAT | buffer_file_type),
|
|
|
3491 (S_IREAD | S_IWRITE));
|
|
|
3492 #else /* not DOS_NT */
|
|
16
|
3493 desc = creat ((char *) XSTRING_DATA (fn),
|
|
0
|
3494 ((auto_saving) ? auto_save_mode_bits : 0666));
|
|
|
3495 #endif /* DOS_NT */
|
|
|
3496 }
|
|
|
3497 #else /* VMS */
|
|
|
3498 {
|
|
|
3499 if (auto_saving) /* Overwrite any previous version of autosave file */
|
|
|
3500 {
|
|
16
|
3501 char *fn_data = XSTRING_DATA (fn);
|
|
0
|
3502 /* if fn exists, truncate to zero length */
|
|
|
3503 vms_truncate (fn_data);
|
|
|
3504 desc = open (fn_data, O_RDWR, 0);
|
|
|
3505 if (desc < 0)
|
|
|
3506 desc = creat_copy_attrs ((STRINGP (current_buffer->filename)
|
|
82
|
3507 ? (char *)
|
|
|
3508 XSTRING_DATA (current_buffer->filename)
|
|
0
|
3509 : 0),
|
|
|
3510 fn_data);
|
|
|
3511 }
|
|
|
3512 else /* Write to temporary name and rename if no errors */
|
|
|
3513 {
|
|
|
3514 Lisp_Object temp_name;
|
|
|
3515
|
|
|
3516 struct gcpro gcpro1, gcpro2, gcpro3;
|
|
|
3517 GCPRO3 (start, filename, visit_file);
|
|
|
3518 {
|
|
|
3519 struct gcpro gcpro1, gcpro2, gcpro3; /* Don't have GCPRO6 */
|
|
|
3520
|
|
|
3521 GCPRO3 (fn, fname, annotations);
|
|
|
3522
|
|
|
3523 temp_name = Ffile_name_directory (filename);
|
|
|
3524
|
|
|
3525 if (NILP (temp_name))
|
|
16
|
3526 desc = creat ((char *) XSTRING_DATA (fn), 0666);
|
|
0
|
3527 else
|
|
|
3528 {
|
|
|
3529 temp_name =
|
|
|
3530 Fmake_temp_name (concat2 (temp_name,
|
|
|
3531 build_string ("$$SAVE$$")));
|
|
|
3532 fname = filename;
|
|
|
3533 fn = temp_name;
|
|
|
3534 desc = creat_copy_attrs (fname,
|
|
16
|
3535 (char *) XSTRING_DATA (fn));
|
|
0
|
3536 if (desc < 0)
|
|
|
3537 {
|
|
|
3538 char *fn_data;
|
|
|
3539 /* If we can't open the temporary file, try creating a new
|
|
|
3540 version of the original file. VMS "creat" creates a
|
|
|
3541 new version rather than truncating an existing file. */
|
|
|
3542 fn = fname;
|
|
|
3543 fname = Qnil;
|
|
16
|
3544 fn_data = XSTRING_DATA (fn);
|
|
0
|
3545 desc = creat (fn_data, 0666);
|
|
|
3546 #if 0 /* This can clobber an existing file and fail
|
|
|
3547 to replace it, if the user runs out of
|
|
|
3548 space. */
|
|
|
3549 if (desc < 0)
|
|
|
3550 {
|
|
|
3551 /* We can't make a new version;
|
|
|
3552 try to truncate and rewrite existing version if any.
|
|
|
3553 */
|
|
|
3554 vms_truncate (fn_data);
|
|
|
3555 desc = open (fn_data, O_RDWR, 0);
|
|
|
3556 }
|
|
|
3557 #endif
|
|
|
3558 }
|
|
|
3559 }
|
|
|
3560 UNGCPRO;
|
|
|
3561 }
|
|
|
3562 UNGCPRO;
|
|
|
3563 }
|
|
|
3564 }
|
|
|
3565 #endif /* VMS */
|
|
|
3566
|
|
|
3567 if (desc < 0)
|
|
|
3568 {
|
|
|
3569 #ifdef CLASH_DETECTION
|
|
|
3570 save_errno = errno;
|
|
|
3571 if (!auto_saving) unlock_file (lockname);
|
|
|
3572 errno = save_errno;
|
|
|
3573 #endif /* CLASH_DETECTION */
|
|
|
3574 report_file_error ("Opening output file",
|
|
|
3575 Fcons (filename, Qnil));
|
|
|
3576 }
|
|
|
3577
|
|
|
3578 {
|
|
|
3579 Lisp_Object desc_locative = Fcons (make_int (desc), Qnil);
|
|
|
3580 Lisp_Object instream = Qnil, outstream = Qnil;
|
|
|
3581 struct gcpro gcpro1, gcpro2;
|
|
|
3582 /* need to gcpro; QUIT could happen out of call to write() */
|
|
|
3583 GCPRO2 (instream, outstream);
|
|
|
3584
|
|
|
3585 record_unwind_protect (close_file_unwind, desc_locative);
|
|
|
3586
|
|
|
3587 if (!NILP (append))
|
|
|
3588 {
|
|
|
3589 if (lseek (desc, 0, 2) < 0)
|
|
|
3590 {
|
|
|
3591 #ifdef CLASH_DETECTION
|
|
|
3592 if (!auto_saving) unlock_file (lockname);
|
|
|
3593 #endif /* CLASH_DETECTION */
|
|
|
3594 report_file_error ("Lseek error",
|
|
|
3595 list1 (filename));
|
|
|
3596 }
|
|
|
3597 }
|
|
|
3598
|
|
|
3599 #ifdef VMS
|
|
|
3600 /*
|
|
|
3601 * Kludge Warning: The VMS C RTL likes to insert carriage returns
|
|
|
3602 * if we do writes that don't end with a carriage return. Furthermore
|
|
|
3603 * it cannot handle writes of more then 16K. The modified
|
|
|
3604 * version of "sys_write" in SYSDEP.C (see comment there) copes with
|
|
|
3605 * this EXCEPT for the last record (iff it doesn't end with a carriage
|
|
|
3606 * return). This implies that if your buffer doesn't end with a carriage
|
|
|
3607 * return, you get one free... tough. However it also means that if
|
|
|
3608 * we make two calls to sys_write (a la the following code) you can
|
|
|
3609 * get one at the gap as well. The easiest way to fix this (honest)
|
|
|
3610 * is to move the gap to the next newline (or the end of the buffer).
|
|
|
3611 * Thus this change.
|
|
|
3612 *
|
|
|
3613 * Yech!
|
|
|
3614 */
|
|
|
3615 you lose -- fix this
|
|
|
3616 if (GPT > BUF_BEG (current_buffer) && *GPT_ADDR[-1] != '\n')
|
|
|
3617 move_gap (find_next_newline (current_buffer, GPT, 1));
|
|
|
3618 #endif
|
|
|
3619
|
|
|
3620 failure = 0;
|
|
|
3621
|
|
|
3622 /* Note: I tried increasing the buffering size, along with
|
|
|
3623 various other tricks, but nothing seemed to make much of
|
|
|
3624 a difference in the time it took to save a large file.
|
|
|
3625 (Actually that's not true. With a local disk, changing
|
|
|
3626 the buffer size doesn't seem to make much difference.
|
|
|
3627 With an NFS-mounted disk, it could make a lot of difference
|
|
|
3628 because you're affecting the number of network requests
|
|
|
3629 that need to be made, and there could be a large latency
|
|
|
3630 for each request. So I've increased the buffer size
|
|
|
3631 to 64K.) */
|
|
|
3632 outstream = make_filedesc_output_stream (desc, 0, -1, 0);
|
|
|
3633 Lstream_set_buffering (XLSTREAM (outstream),
|
|
|
3634 LSTREAM_BLOCKN_BUFFERED, 65536);
|
|
70
|
3635 #ifdef MULE
|
|
|
3636 outstream =
|
|
|
3637 make_encoding_output_stream ( XLSTREAM (outstream), codesys);
|
|
|
3638 Lstream_set_buffering (XLSTREAM (outstream),
|
|
|
3639 LSTREAM_BLOCKN_BUFFERED, 65536);
|
|
|
3640 #endif
|
|
0
|
3641 if (STRINGP (start))
|
|
|
3642 {
|
|
|
3643 instream = make_lisp_string_input_stream (start, 0, -1);
|
|
|
3644 start1 = 0;
|
|
|
3645 }
|
|
|
3646 else
|
|
|
3647 instream = make_lisp_buffer_input_stream (current_buffer, start1, end1,
|
|
|
3648 LSTR_SELECTIVE |
|
|
|
3649 LSTR_IGNORE_ACCESSIBLE);
|
|
|
3650 failure = (0 > (a_write (outstream, instream, start1,
|
|
|
3651 &annotations)));
|
|
|
3652 save_errno = errno;
|
|
|
3653 /* Note that this doesn't close the desc since we created the
|
|
|
3654 stream without the LSTR_CLOSING flag, but it does
|
|
|
3655 flush out any buffered data. */
|
|
|
3656 if (Lstream_close (XLSTREAM (outstream)) < 0)
|
|
|
3657 {
|
|
|
3658 failure = 1;
|
|
|
3659 save_errno = errno;
|
|
|
3660 }
|
|
|
3661 Lstream_close (XLSTREAM (instream));
|
|
|
3662 UNGCPRO;
|
|
|
3663
|
|
|
3664 #ifdef HAVE_FSYNC
|
|
|
3665 /* Note fsync appears to change the modtime on BSD4.2 (both vax and sun).
|
|
|
3666 Disk full in NFS may be reported here. */
|
|
|
3667 /* mib says that closing the file will try to write as fast as NFS can do
|
|
|
3668 it, and that means the fsync here is not crucial for autosave files. */
|
|
|
3669 if (!auto_saving && fsync (desc) < 0
|
|
|
3670 /* If fsync fails with EINTR, don't treat that as serious. */
|
|
|
3671 && errno != EINTR)
|
|
|
3672 {
|
|
|
3673 failure = 1;
|
|
|
3674 save_errno = errno;
|
|
|
3675 }
|
|
|
3676 #endif
|
|
|
3677
|
|
|
3678 /* Spurious "file has changed on disk" warnings have been
|
|
|
3679 observed on Suns as well.
|
|
|
3680 It seems that `close' can change the modtime, under nfs.
|
|
|
3681
|
|
|
3682 (This has supposedly been fixed in Sunos 4,
|
|
|
3683 but who knows about all the other machines with NFS?) */
|
|
|
3684 /* On VMS and APOLLO, must do the stat after the close
|
|
|
3685 since closing changes the modtime. */
|
|
|
3686 #if 0 /* !defined (VMS) && !defined (APOLLO) */
|
|
|
3687 fstat (desc, &st);
|
|
|
3688 #endif
|
|
|
3689
|
|
|
3690 /* NFS can report a write failure now. */
|
|
|
3691 if (close (desc) < 0)
|
|
|
3692 {
|
|
|
3693 failure = 1;
|
|
|
3694 save_errno = errno;
|
|
|
3695 }
|
|
|
3696
|
|
|
3697 /* Discard the close unwind-protect. Execute the one for
|
|
|
3698 build_annotations (switches back to the original current buffer
|
|
|
3699 as necessary). */
|
|
|
3700 XCAR (desc_locative) = Qnil;
|
|
|
3701 unbind_to (speccount, Qnil);
|
|
|
3702 }
|
|
|
3703
|
|
|
3704
|
|
|
3705 #ifdef VMS
|
|
|
3706 /* If we wrote to a temporary name and had no errors, rename to real name. */
|
|
|
3707 if (!NILP (fname))
|
|
|
3708 {
|
|
|
3709 if (!failure)
|
|
|
3710 {
|
|
16
|
3711 failure = (rename ((char *) XSTRING_DATA (fn),
|
|
|
3712 (char *) XSTRING_DATA (fname))
|
|
0
|
3713 != 0);
|
|
|
3714 save_errno = errno;
|
|
|
3715 }
|
|
|
3716 fn = fname;
|
|
|
3717 }
|
|
|
3718 #endif /* VMS */
|
|
|
3719
|
|
|
3720 #if 1 /* defined (VMS) || defined (APOLLO) */
|
|
16
|
3721 stat ((char *) XSTRING_DATA (fn), &st);
|
|
0
|
3722 #endif
|
|
|
3723
|
|
|
3724 #ifdef CLASH_DETECTION
|
|
|
3725 if (!auto_saving)
|
|
|
3726 unlock_file (lockname);
|
|
|
3727 #endif /* CLASH_DETECTION */
|
|
|
3728
|
|
|
3729 /* Do this before reporting IO error
|
|
|
3730 to avoid a "file has changed on disk" warning on
|
|
|
3731 next attempt to save. */
|
|
|
3732 if (visiting)
|
|
|
3733 current_buffer->modtime = st.st_mtime;
|
|
|
3734
|
|
|
3735 if (failure)
|
|
|
3736 error ("IO error writing %s: %s",
|
|
16
|
3737 XSTRING_DATA (fn),
|
|
0
|
3738 strerror (save_errno));
|
|
|
3739
|
|
|
3740 if (visiting)
|
|
|
3741 {
|
|
|
3742 BUF_SAVE_MODIFF (current_buffer) = BUF_MODIFF (current_buffer);
|
|
|
3743 current_buffer->save_length = make_int (BUF_SIZE (current_buffer));
|
|
|
3744 current_buffer->filename = visit_file;
|
|
|
3745 MARK_MODELINE_CHANGED;
|
|
|
3746 }
|
|
|
3747 else if (quietly)
|
|
|
3748 {
|
|
|
3749 return Qnil;
|
|
|
3750 }
|
|
|
3751
|
|
|
3752 if (!auto_saving)
|
|
|
3753 {
|
|
|
3754 if (visiting_other)
|
|
16
|
3755 message ("Wrote %s", XSTRING_DATA (visit_file));
|
|
0
|
3756 else
|
|
|
3757 {
|
|
|
3758 struct gcpro gcpro1;
|
|
|
3759 Lisp_Object fsp;
|
|
|
3760 GCPRO1 (fn);
|
|
|
3761
|
|
|
3762 fsp = Ffile_symlink_p (fn);
|
|
|
3763 if (NILP (fsp))
|
|
16
|
3764 message ("Wrote %s", XSTRING_DATA (fn));
|
|
0
|
3765 else
|
|
|
3766 message ("Wrote %s (symlink to %s)",
|
|
16
|
3767 XSTRING_DATA (fn), XSTRING_DATA (fsp));
|
|
0
|
3768 UNGCPRO;
|
|
|
3769 }
|
|
|
3770 }
|
|
|
3771 return Qnil;
|
|
|
3772 }
|
|
|
3773
|
|
|
3774 /* #### This is such a load of shit!!!! There is no way we should define
|
|
|
3775 something so stupid as a subr, just sort the fucking list more
|
|
|
3776 intelligently. */
|
|
20
|
3777 DEFUN ("car-less-than-car", Fcar_less_than_car, 2, 2, 0, /*
|
|
0
|
3778 Return t if (car A) is numerically less than (car B).
|
|
20
|
3779 */
|
|
|
3780 (a, b))
|
|
0
|
3781 {
|
|
|
3782 return Flss (Fcar (a), Fcar (b));
|
|
|
3783 }
|
|
|
3784
|
|
|
3785 /* Heh heh heh, let's define this too, just to aggravate the person who
|
|
|
3786 wrote the above comment. */
|
|
20
|
3787 DEFUN ("cdr-less-than-cdr", Fcdr_less_than_cdr, 2, 2, 0, /*
|
|
0
|
3788 Return t if (cdr A) is numerically less than (cdr B).
|
|
20
|
3789 */
|
|
|
3790 (a, b))
|
|
0
|
3791 {
|
|
|
3792 return Flss (Fcdr (a), Fcdr (b));
|
|
|
3793 }
|
|
|
3794
|
|
|
3795 /* Build the complete list of annotations appropriate for writing out
|
|
|
3796 the text between START and END, by calling all the functions in
|
|
|
3797 write-region-annotate-functions and merging the lists they return.
|
|
|
3798 If one of these functions switches to a different buffer, we assume
|
|
|
3799 that buffer contains altered text. Therefore, the caller must
|
|
|
3800 make sure to restore the current buffer in all cases,
|
|
|
3801 as save-excursion would do. */
|
|
|
3802
|
|
|
3803 static Lisp_Object
|
|
|
3804 build_annotations (Lisp_Object start, Lisp_Object end)
|
|
|
3805 {
|
|
|
3806 /* This function can GC */
|
|
|
3807 Lisp_Object annotations;
|
|
|
3808 Lisp_Object p, res;
|
|
|
3809 struct gcpro gcpro1, gcpro2;
|
|
|
3810
|
|
|
3811 annotations = Qnil;
|
|
|
3812 p = Vwrite_region_annotate_functions;
|
|
|
3813 GCPRO2 (annotations, p);
|
|
|
3814 while (!NILP (p))
|
|
|
3815 {
|
|
|
3816 struct buffer *given_buffer = current_buffer;
|
|
|
3817 Vwrite_region_annotations_so_far = annotations;
|
|
|
3818 res = call2 (Fcar (p), start, end);
|
|
|
3819 /* If the function makes a different buffer current,
|
|
|
3820 assume that means this buffer contains altered text to be output.
|
|
|
3821 Reset START and END from the buffer bounds
|
|
|
3822 and discard all previous annotations because they should have
|
|
|
3823 been dealt with by this function. */
|
|
|
3824 if (current_buffer != given_buffer)
|
|
|
3825 {
|
|
|
3826 start = make_int (BUF_BEGV (current_buffer));
|
|
|
3827 end = make_int (BUF_ZV (current_buffer));
|
|
|
3828 annotations = Qnil;
|
|
|
3829 }
|
|
|
3830 (void) Flength (res); /* Check basic validity of return value */
|
|
|
3831 annotations = merge (annotations, res, Qcar_less_than_car);
|
|
|
3832 p = Fcdr (p);
|
|
|
3833 }
|
|
|
3834
|
|
|
3835 /* Now do the same for annotation functions implied by the file-format */
|
|
|
3836 if (auto_saving && (!EQ (Vauto_save_file_format, Qt)))
|
|
|
3837 p = Vauto_save_file_format;
|
|
|
3838 else
|
|
|
3839 p = current_buffer->file_format;
|
|
|
3840 while (!NILP (p))
|
|
|
3841 {
|
|
|
3842 struct buffer *given_buffer = current_buffer;
|
|
|
3843 Vwrite_region_annotations_so_far = annotations;
|
|
|
3844 res = call3 (Qformat_annotate_function, Fcar (p), start, end);
|
|
|
3845 if (current_buffer != given_buffer)
|
|
|
3846 {
|
|
|
3847 start = make_int (BUF_BEGV (current_buffer));
|
|
|
3848 end = make_int (BUF_ZV (current_buffer));
|
|
|
3849 annotations = Qnil;
|
|
|
3850 }
|
|
|
3851 (void) Flength (res);
|
|
|
3852 annotations = merge (annotations, res, Qcar_less_than_car);
|
|
|
3853 p = Fcdr (p);
|
|
|
3854 }
|
|
|
3855 UNGCPRO;
|
|
|
3856 return annotations;
|
|
|
3857 }
|
|
|
3858
|
|
|
3859 /* Write to stream OUTSTREAM the characters from INSTREAM (it is read until
|
|
|
3860 EOF is encountered), assuming they start at position POS in the buffer
|
|
|
3861 of string that STREAM refers to. Intersperse with them the annotations
|
|
|
3862 from *ANNOT that fall into the range of positions we are reading from,
|
|
|
3863 each at its appropriate position.
|
|
|
3864
|
|
|
3865 Modify *ANNOT by discarding elements as we output them.
|
|
|
3866 The return value is negative in case of system call failure. */
|
|
|
3867
|
|
|
3868 /* 4K should probably be fine. We just need to reduce the number of
|
|
|
3869 function calls to reasonable level. The Lstream stuff itself will
|
|
|
3870 batch to 64K to reduce the number of system calls. */
|
|
|
3871
|
|
|
3872 #define A_WRITE_BATCH_SIZE 4096
|
|
|
3873
|
|
|
3874 static int
|
|
|
3875 a_write (Lisp_Object outstream, Lisp_Object instream, int pos,
|
|
|
3876 Lisp_Object *annot)
|
|
|
3877 {
|
|
|
3878 Lisp_Object tem;
|
|
|
3879 int nextpos;
|
|
|
3880 unsigned char largebuf[A_WRITE_BATCH_SIZE];
|
|
|
3881 Lstream *instr = XLSTREAM (instream);
|
|
|
3882 Lstream *outstr = XLSTREAM (outstream);
|
|
|
3883
|
|
|
3884 while (NILP (*annot) || CONSP (*annot))
|
|
|
3885 {
|
|
|
3886 tem = Fcar_safe (Fcar (*annot));
|
|
|
3887 if (INTP (tem))
|
|
|
3888 nextpos = XINT (tem);
|
|
|
3889 else
|
|
|
3890 nextpos = INT_MAX;
|
|
70
|
3891 #ifdef MULE
|
|
|
3892 /* If there are annotations left and we have Mule, then we
|
|
|
3893 have to do the I/O one emchar at a time so we can
|
|
|
3894 determine when to insert the annotation. */
|
|
|
3895 if (!NILP (*annot))
|
|
|
3896 {
|
|
|
3897 Emchar ch;
|
|
|
3898 while (pos != nextpos && (ch = Lstream_get_emchar (instr)) != EOF)
|
|
|
3899 {
|
|
|
3900 if (Lstream_put_emchar (outstr, ch) < 0)
|
|
|
3901 return -1;
|
|
|
3902 pos++;
|
|
|
3903 }
|
|
|
3904 }
|
|
|
3905 else
|
|
|
3906 #endif
|
|
0
|
3907 {
|
|
|
3908 while (pos != nextpos)
|
|
|
3909 {
|
|
|
3910 /* Otherwise there is no point to that. Just go in batches. */
|
|
|
3911 int chunk = min (nextpos - pos, A_WRITE_BATCH_SIZE);
|
|
|
3912
|
|
|
3913 chunk = Lstream_read (instr, largebuf, chunk);
|
|
|
3914 if (chunk < 0)
|
|
|
3915 return -1;
|
|
|
3916 if (chunk == 0) /* EOF */
|
|
|
3917 break;
|
|
|
3918 if (Lstream_write (outstr, largebuf, chunk) < chunk)
|
|
|
3919 return -1;
|
|
|
3920 pos += chunk;
|
|
|
3921 }
|
|
|
3922 }
|
|
|
3923 if (pos == nextpos)
|
|
|
3924 {
|
|
|
3925 tem = Fcdr (Fcar (*annot));
|
|
|
3926 if (STRINGP (tem))
|
|
|
3927 {
|
|
16
|
3928 if (Lstream_write (outstr, XSTRING_DATA (tem),
|
|
|
3929 XSTRING_LENGTH (tem)) < 0)
|
|
0
|
3930 return -1;
|
|
|
3931 }
|
|
|
3932 *annot = Fcdr (*annot);
|
|
|
3933 }
|
|
|
3934 else
|
|
|
3935 return 0;
|
|
|
3936 }
|
|
|
3937 return -1;
|
|
|
3938 }
|
|
|
3939
|
|
|
3940
|
|
|
3941
|
|
|
3942 #if 0
|
|
|
3943 #include <des_crypt.h>
|
|
|
3944
|
|
|
3945 #define CRYPT_BLOCK_SIZE 8 /* bytes */
|
|
|
3946 #define CRYPT_KEY_SIZE 8 /* bytes */
|
|
|
3947
|
|
20
|
3948 DEFUN ("encrypt-string", Fencrypt_string, 2, 2, 0, /*
|
|
0
|
3949 Encrypt STRING using KEY.
|
|
20
|
3950 */
|
|
|
3951 (string, key))
|
|
0
|
3952 {
|
|
|
3953 char *encrypted_string, *raw_key;
|
|
|
3954 int rounded_size, extra, key_size;
|
|
|
3955
|
|
|
3956 /* !!#### May produce bogus data under Mule. */
|
|
|
3957 CHECK_STRING (string);
|
|
|
3958 CHECK_STRING (key);
|
|
|
3959
|
|
16
|
3960 extra = XSTRING_LENGTH (string) % CRYPT_BLOCK_SIZE;
|
|
|
3961 rounded_size = XSTRING_LENGTH (string) + extra;
|
|
0
|
3962 encrypted_string = alloca (rounded_size + 1);
|
|
16
|
3963 memcpy (encrypted_string, XSTRING_DATA (string), XSTRING_LENGTH (string));
|
|
0
|
3964 memset (encrypted_string + rounded_size - extra, 0, extra + 1);
|
|
|
3965
|
|
16
|
3966 if (XSTRING_LENGTH (key) > CRYPT_KEY_SIZE)
|
|
0
|
3967 key_size = CRYPT_KEY_SIZE;
|
|
|
3968 else
|
|
16
|
3969 key_size = XSTRING_LENGTH (key);
|
|
0
|
3970
|
|
|
3971 raw_key = alloca (CRYPT_KEY_SIZE + 1);
|
|
16
|
3972 memcpy (raw_key, XSTRING_DATA (key), key_size);
|
|
0
|
3973 memset (raw_key + key_size, 0, (CRYPT_KEY_SIZE + 1) - key_size);
|
|
|
3974
|
|
|
3975 (void) ecb_crypt (raw_key, encrypted_string, rounded_size,
|
|
|
3976 DES_ENCRYPT | DES_SW);
|
|
|
3977 return make_string (encrypted_string, rounded_size);
|
|
|
3978 }
|
|
|
3979
|
|
20
|
3980 DEFUN ("decrypt-string", Fdecrypt_string, 2, 2, 0, /*
|
|
0
|
3981 Decrypt STRING using KEY.
|
|
20
|
3982 */
|
|
|
3983 (string, key))
|
|
0
|
3984 {
|
|
|
3985 char *decrypted_string, *raw_key;
|
|
|
3986 int string_size, key_size;
|
|
|
3987
|
|
|
3988 CHECK_STRING (string);
|
|
|
3989 CHECK_STRING (key);
|
|
|
3990
|
|
16
|
3991 string_size = XSTRING_LENGTH (string) + 1;
|
|
0
|
3992 decrypted_string = alloca (string_size);
|
|
16
|
3993 memcpy (decrypted_string, XSTRING_DATA (string), string_size);
|
|
0
|
3994 decrypted_string[string_size - 1] = '\0';
|
|
|
3995
|
|
16
|
3996 if (XSTRING_LENGTH (key) > CRYPT_KEY_SIZE)
|
|
0
|
3997 key_size = CRYPT_KEY_SIZE;
|
|
|
3998 else
|
|
16
|
3999 key_size = XSTRING_LENGTH (key);
|
|
0
|
4000
|
|
|
4001 raw_key = alloca (CRYPT_KEY_SIZE + 1);
|
|
16
|
4002 memcpy (raw_key, XSTRING_DATA (key), key_size);
|
|
0
|
4003 memset (raw_key + key_size, 0, (CRYPT_KEY_SIZE + 1) - key_size);
|
|
|
4004
|
|
|
4005
|
|
|
4006 (void) ecb_crypt (raw_key, decrypted_string, string_size,
|
|
|
4007 DES_DECRYPT | DES_SW);
|
|
|
4008 return make_string (decrypted_string, string_size - 1);
|
|
|
4009 }
|
|
|
4010 #endif
|
|
|
4011
|
|
|
4012
|
|
20
|
4013 DEFUN ("verify-visited-file-modtime", Fverify_visited_file_modtime, 1, 1, 0, /*
|
|
0
|
4014 Return t if last mod time of BUF's visited file matches what BUF records.
|
|
|
4015 This means that the file has not been changed since it was visited or saved.
|
|
20
|
4016 */
|
|
|
4017 (buf))
|
|
0
|
4018 {
|
|
116
|
4019 /* This function can call lisp */
|
|
0
|
4020 struct buffer *b;
|
|
|
4021 struct stat st;
|
|
|
4022 Lisp_Object handler;
|
|
|
4023
|
|
|
4024 CHECK_BUFFER (buf);
|
|
|
4025 b = XBUFFER (buf);
|
|
|
4026
|
|
|
4027 if (!STRINGP (b->filename)) return Qt;
|
|
|
4028 if (b->modtime == 0) return Qt;
|
|
|
4029
|
|
|
4030 /* If the file name has special constructs in it,
|
|
|
4031 call the corresponding file handler. */
|
|
|
4032 handler = Ffind_file_name_handler (b->filename,
|
|
|
4033 Qverify_visited_file_modtime);
|
|
|
4034 if (!NILP (handler))
|
|
|
4035 return call2 (handler, Qverify_visited_file_modtime, buf);
|
|
|
4036
|
|
16
|
4037 if (stat ((char *) XSTRING_DATA (b->filename), &st) < 0)
|
|
0
|
4038 {
|
|
|
4039 /* If the file doesn't exist now and didn't exist before,
|
|
|
4040 we say that it isn't modified, provided the error is a tame one. */
|
|
|
4041 if (errno == ENOENT || errno == EACCES || errno == ENOTDIR)
|
|
|
4042 st.st_mtime = -1;
|
|
|
4043 else
|
|
|
4044 st.st_mtime = 0;
|
|
|
4045 }
|
|
|
4046 if (st.st_mtime == b->modtime
|
|
|
4047 /* If both are positive, accept them if they are off by one second. */
|
|
|
4048 || (st.st_mtime > 0 && b->modtime > 0
|
|
|
4049 && (st.st_mtime == b->modtime + 1
|
|
|
4050 || st.st_mtime == b->modtime - 1)))
|
|
|
4051 return Qt;
|
|
|
4052 return Qnil;
|
|
|
4053 }
|
|
|
4054
|
|
20
|
4055 DEFUN ("clear-visited-file-modtime", Fclear_visited_file_modtime, 0, 0, 0, /*
|
|
0
|
4056 Clear out records of last mod time of visited file.
|
|
|
4057 Next attempt to save will certainly not complain of a discrepancy.
|
|
20
|
4058 */
|
|
|
4059 ())
|
|
0
|
4060 {
|
|
|
4061 current_buffer->modtime = 0;
|
|
|
4062 return Qnil;
|
|
|
4063 }
|
|
|
4064
|
|
20
|
4065 DEFUN ("visited-file-modtime", Fvisited_file_modtime, 0, 0, 0, /*
|
|
0
|
4066 Return the current buffer's recorded visited file modification time.
|
|
|
4067 The value is a list of the form (HIGH . LOW), like the time values
|
|
|
4068 that `file-attributes' returns.
|
|
20
|
4069 */
|
|
|
4070 ())
|
|
0
|
4071 {
|
|
|
4072 return time_to_lisp ((time_t) current_buffer->modtime);
|
|
|
4073 }
|
|
|
4074
|
|
20
|
4075 DEFUN ("set-visited-file-modtime", Fset_visited_file_modtime, 0, 1, 0, /*
|
|
0
|
4076 Update buffer's recorded modification time from the visited file's time.
|
|
|
4077 Useful if the buffer was not read from the file normally
|
|
|
4078 or if the file itself has been changed for some known benign reason.
|
|
|
4079 An argument specifies the modification time value to use
|
|
|
4080 (instead of that of the visited file), in the form of a list
|
|
|
4081 (HIGH . LOW) or (HIGH LOW).
|
|
20
|
4082 */
|
|
|
4083 (time_list))
|
|
0
|
4084 {
|
|
116
|
4085 /* This function can call lisp */
|
|
0
|
4086 if (!NILP (time_list))
|
|
|
4087 {
|
|
|
4088 time_t the_time;
|
|
|
4089 lisp_to_time (time_list, &the_time);
|
|
|
4090 current_buffer->modtime = (int) the_time;
|
|
|
4091 }
|
|
|
4092 else
|
|
|
4093 {
|
|
|
4094 Lisp_Object filename;
|
|
|
4095 struct stat st;
|
|
|
4096 Lisp_Object handler;
|
|
114
|
4097 struct gcpro gcpro1, gcpro2, gcpro3;
|
|
0
|
4098
|
|
114
|
4099 GCPRO3 (filename, time_list, current_buffer->filename);
|
|
|
4100 filename = Fexpand_file_name (current_buffer->filename, Qnil);
|
|
0
|
4101
|
|
|
4102 /* If the file name has special constructs in it,
|
|
|
4103 call the corresponding file handler. */
|
|
|
4104 handler = Ffind_file_name_handler (filename, Qset_visited_file_modtime);
|
|
|
4105 UNGCPRO;
|
|
|
4106 if (!NILP (handler))
|
|
|
4107 /* The handler can find the file name the same way we did. */
|
|
|
4108 return call2 (handler, Qset_visited_file_modtime, Qnil);
|
|
16
|
4109 else if (stat ((char *) XSTRING_DATA (filename), &st) >= 0)
|
|
0
|
4110 current_buffer->modtime = st.st_mtime;
|
|
|
4111 }
|
|
|
4112
|
|
|
4113 return Qnil;
|
|
|
4114 }
|
|
|
4115
|
|
20
|
4116 DEFUN ("set-buffer-modtime", Fset_buffer_modtime, 1, 2, 0, /*
|
|
0
|
4117 Update BUFFER's recorded modification time from the associated
|
|
|
4118 file's modtime, if there is an associated file. If not, use the
|
|
|
4119 current time. In either case, if the optional arg TIME is supplied,
|
|
|
4120 it will be used if it is either an integer or a cons of two integers.
|
|
20
|
4121 */
|
|
|
4122 (buf, in_time))
|
|
0
|
4123 {
|
|
116
|
4124 /* This function can call lisp */
|
|
0
|
4125 unsigned long time_to_use = 0;
|
|
|
4126 int set_time_to_use = 0;
|
|
|
4127 struct stat st;
|
|
|
4128
|
|
|
4129 CHECK_BUFFER (buf);
|
|
|
4130
|
|
|
4131 if (!NILP (in_time))
|
|
|
4132 {
|
|
|
4133 if (INTP (in_time))
|
|
|
4134 {
|
|
|
4135 time_to_use = XINT (in_time);
|
|
|
4136 set_time_to_use = 1;
|
|
|
4137 }
|
|
|
4138 else if ((CONSP (in_time)) &&
|
|
|
4139 (INTP (Fcar (in_time))) &&
|
|
|
4140 (INTP (Fcdr (in_time))))
|
|
|
4141 {
|
|
|
4142 time_t the_time;
|
|
|
4143 lisp_to_time (in_time, &the_time);
|
|
|
4144 time_to_use = (unsigned long) the_time;
|
|
|
4145 set_time_to_use = 1;
|
|
|
4146 }
|
|
|
4147 }
|
|
|
4148
|
|
|
4149 if (!set_time_to_use)
|
|
|
4150 {
|
|
|
4151 Lisp_Object filename = Qnil;
|
|
114
|
4152 struct gcpro gcpro1;
|
|
|
4153 GCPRO1 (filename);
|
|
|
4154 /* #### dmoore - do we need to protect XBUFFER (buf)->filename?
|
|
|
4155 What if a ^(*&^&*^*& handler renames a buffer? I think I'm
|
|
|
4156 getting a headache now. */
|
|
0
|
4157
|
|
|
4158 if (STRINGP (XBUFFER (buf)->filename))
|
|
114
|
4159 filename = Fexpand_file_name (XBUFFER (buf)->filename, Qnil);
|
|
0
|
4160 else
|
|
|
4161 filename = Qnil;
|
|
|
4162
|
|
|
4163 if (!NILP (filename) && !NILP (Ffile_exists_p (filename)))
|
|
|
4164 {
|
|
|
4165 Lisp_Object handler;
|
|
|
4166
|
|
|
4167 /* If the file name has special constructs in it,
|
|
|
4168 call the corresponding file handler. */
|
|
|
4169 handler = Ffind_file_name_handler (filename, Qset_buffer_modtime);
|
|
|
4170 UNGCPRO;
|
|
|
4171 if (!NILP (handler))
|
|
|
4172 /* The handler can find the file name the same way we did. */
|
|
|
4173 return (call2 (handler, Qset_buffer_modtime, Qnil));
|
|
|
4174 else
|
|
|
4175 {
|
|
16
|
4176 if (stat ((char *) XSTRING_DATA (filename), &st) >= 0)
|
|
0
|
4177 time_to_use = st.st_mtime;
|
|
|
4178 else
|
|
|
4179 time_to_use = time ((time_t *) 0);
|
|
|
4180 }
|
|
|
4181 }
|
|
|
4182 else
|
|
114
|
4183 {
|
|
|
4184 UNGCPRO;
|
|
|
4185 time_to_use = time ((time_t *) 0);
|
|
|
4186 }
|
|
0
|
4187 }
|
|
|
4188
|
|
|
4189 XBUFFER (buf)->modtime = time_to_use;
|
|
114
|
4190
|
|
0
|
4191 return Qnil;
|
|
|
4192 }
|
|
|
4193
|
|
|
4194
|
|
|
4195 static Lisp_Object
|
|
|
4196 auto_save_error (Lisp_Object condition_object, Lisp_Object ignored)
|
|
|
4197 {
|
|
116
|
4198 /* This function can call lisp */
|
|
0
|
4199 if (gc_in_progress)
|
|
|
4200 return Qnil;
|
|
110
|
4201 /* Don't try printing an error message after everything is gone! */
|
|
|
4202 if (preparing_for_armageddon)
|
|
|
4203 return Qnil;
|
|
0
|
4204 clear_echo_area (selected_frame (), Qauto_saving, 1);
|
|
|
4205 Fding (Qt, Qauto_save_error, Qnil);
|
|
82
|
4206 message ("Auto-saving...error for %s", XSTRING_DATA (current_buffer->name));
|
|
0
|
4207 Fsleep_for (make_int (1));
|
|
82
|
4208 message ("Auto-saving...error!for %s", XSTRING_DATA (current_buffer->name));
|
|
0
|
4209 Fsleep_for (make_int (1));
|
|
82
|
4210 message ("Auto-saving...error for %s", XSTRING_DATA (current_buffer->name));
|
|
0
|
4211 Fsleep_for (make_int (1));
|
|
|
4212 return Qnil;
|
|
|
4213 }
|
|
|
4214
|
|
|
4215 static Lisp_Object
|
|
|
4216 auto_save_1 (Lisp_Object ignored)
|
|
|
4217 {
|
|
116
|
4218 /* This function can call lisp */
|
|
|
4219 /* #### I think caller is protecting current_buffer? */
|
|
0
|
4220 struct stat st;
|
|
|
4221 Lisp_Object fn = current_buffer->filename;
|
|
|
4222 Lisp_Object a = current_buffer->auto_save_file_name;
|
|
|
4223
|
|
|
4224 if (!STRINGP (a))
|
|
|
4225 return (Qnil);
|
|
|
4226
|
|
|
4227 /* Get visited file's mode to become the auto save file's mode. */
|
|
|
4228 if (STRINGP (fn) &&
|
|
16
|
4229 stat ((char *) XSTRING_DATA (fn), &st) >= 0)
|
|
0
|
4230 /* But make sure we can overwrite it later! */
|
|
|
4231 auto_save_mode_bits = st.st_mode | 0600;
|
|
|
4232 else
|
|
|
4233 /* default mode for auto-save files of buffers with no file is
|
|
|
4234 readable by owner only. This may annoy some small number of
|
|
|
4235 people, but the alternative removes all privacy from email. */
|
|
|
4236 auto_save_mode_bits = 0600;
|
|
|
4237
|
|
|
4238 return
|
|
70
|
4239 /* !!#### need to deal with this 'escape-quoted everywhere */
|
|
|
4240 Fwrite_region_internal (Qnil, Qnil, a, Qnil, Qlambda, Qnil,
|
|
|
4241 #ifdef MULE
|
|
|
4242 Qescape_quoted
|
|
|
4243 #else
|
|
|
4244 Qnil
|
|
|
4245 #endif
|
|
|
4246 );
|
|
44
|
4247 }
|
|
|
4248
|
|
116
|
4249 static Lisp_Object
|
|
|
4250 auto_save_expand_name_error (Lisp_Object condition_object, Lisp_Object ignored)
|
|
|
4251 {
|
|
|
4252 /* #### this function should spew an error message about not being
|
|
|
4253 able to open the .saves file. */
|
|
|
4254 return Qnil;
|
|
|
4255 }
|
|
|
4256
|
|
|
4257 static Lisp_Object
|
|
|
4258 auto_save_expand_name (Lisp_Object name)
|
|
|
4259 {
|
|
|
4260 struct gcpro gcpro1;
|
|
|
4261
|
|
|
4262 /* note that caller did NOT gc protect name, so we do it. */
|
|
|
4263 /* #### dmoore - this might not be neccessary, if condition_case_1
|
|
|
4264 protects it. but I don't think it does. */
|
|
|
4265 GCPRO1 (name);
|
|
|
4266 RETURN_UNGCPRO (Fexpand_file_name (name, Qnil));
|
|
|
4267 }
|
|
|
4268
|
|
0
|
4269
|
|
|
4270 static Lisp_Object
|
|
|
4271 do_auto_save_unwind (Lisp_Object fd)
|
|
|
4272 {
|
|
|
4273 close (XINT (fd));
|
|
|
4274 return (fd);
|
|
|
4275 }
|
|
|
4276
|
|
|
4277 static Lisp_Object
|
|
|
4278 do_auto_save_unwind_2 (Lisp_Object old_auto_saving)
|
|
|
4279 {
|
|
|
4280 auto_saving = XINT (old_auto_saving);
|
|
|
4281 return Qnil;
|
|
|
4282 }
|
|
|
4283
|
|
|
4284 /* Fdo_auto_save() checks whether a GC is in progress when it is called,
|
|
|
4285 and if so, tries to avoid touching lisp objects.
|
|
|
4286
|
|
|
4287 The only time that Fdo_auto_save() is called while GC is in progress
|
|
|
4288 is if we're going down, as a result of an abort() or a kill signal.
|
|
|
4289 It's fairly important that we generate autosave files in that case!
|
|
|
4290 */
|
|
|
4291
|
|
20
|
4292 DEFUN ("do-auto-save", Fdo_auto_save, 0, 2, "", /*
|
|
0
|
4293 Auto-save all buffers that need it.
|
|
|
4294 This is all buffers that have auto-saving enabled
|
|
|
4295 and are changed since last auto-saved.
|
|
|
4296 Auto-saving writes the buffer into a file
|
|
|
4297 so that your editing is not lost if the system crashes.
|
|
|
4298 This file is not the file you visited; that changes only when you save.
|
|
|
4299 Normally we run the normal hook `auto-save-hook' before saving.
|
|
|
4300
|
|
|
4301 Non-nil first argument means do not print any message if successful.
|
|
|
4302 Non-nil second argument means save only current buffer.
|
|
20
|
4303 */
|
|
|
4304 (no_message, current_only))
|
|
0
|
4305 {
|
|
116
|
4306 /* This function can call lisp */
|
|
110
|
4307 struct buffer *b;
|
|
0
|
4308 Lisp_Object tail, buf;
|
|
|
4309 int auto_saved = 0;
|
|
|
4310 int do_handled_files;
|
|
|
4311 Lisp_Object oquit = Qnil;
|
|
|
4312 Lisp_Object listfile = Qnil;
|
|
110
|
4313 Lisp_Object old;
|
|
0
|
4314 int listdesc = -1;
|
|
|
4315 int speccount = specpdl_depth ();
|
|
110
|
4316 struct gcpro gcpro1, gcpro2, gcpro3;
|
|
|
4317
|
|
|
4318 XSETBUFFER (old, current_buffer);
|
|
|
4319 GCPRO3 (oquit, listfile, old);
|
|
0
|
4320 check_quit (); /* make Vquit_flag accurate */
|
|
|
4321 /* Ordinarily don't quit within this function,
|
|
|
4322 but don't make it impossible to quit (in case we get hung in I/O). */
|
|
|
4323 oquit = Vquit_flag;
|
|
|
4324 Vquit_flag = Qnil;
|
|
|
4325
|
|
|
4326 /* No further GCPRO needed, because (when it matters) all Lisp_Object
|
|
|
4327 variables point to non-strings reached from Vbuffer_alist. */
|
|
|
4328
|
|
|
4329 if (minibuf_level != 0 || preparing_for_armageddon)
|
|
|
4330 no_message = Qt;
|
|
|
4331
|
|
|
4332 run_hook (Qauto_save_hook);
|
|
|
4333
|
|
|
4334 if (GC_STRINGP (Vauto_save_list_file_name))
|
|
116
|
4335 listfile = condition_case_1 (Qt,
|
|
|
4336 auto_save_expand_name,
|
|
|
4337 Vauto_save_list_file_name,
|
|
|
4338 auto_save_expand_name_error, Qnil);
|
|
0
|
4339
|
|
|
4340 /* Make sure auto_saving is reset. */
|
|
|
4341 record_unwind_protect (do_auto_save_unwind_2, make_int (auto_saving));
|
|
|
4342
|
|
|
4343 auto_saving = 1;
|
|
|
4344
|
|
|
4345 /* First, save all files which don't have handlers. If Emacs is
|
|
|
4346 crashing, the handlers may tweak what is causing Emacs to crash
|
|
|
4347 in the first place, and it would be a shame if Emacs failed to
|
|
|
4348 autosave perfectly ordinary files because it couldn't handle some
|
|
|
4349 ange-ftp'd file. */
|
|
|
4350 for (do_handled_files = 0; do_handled_files < 2; do_handled_files++)
|
|
|
4351 {
|
|
|
4352 for (tail = Vbuffer_alist;
|
|
|
4353 GC_CONSP (tail);
|
|
|
4354 tail = XCDR (tail))
|
|
|
4355 {
|
|
|
4356 buf = XCDR (XCAR (tail));
|
|
|
4357 b = XBUFFER (buf);
|
|
|
4358
|
|
|
4359 if (!GC_NILP (current_only)
|
|
|
4360 && b != current_buffer)
|
|
|
4361 continue;
|
|
|
4362
|
|
|
4363 /* Don't auto-save indirect buffers.
|
|
|
4364 The base buffer takes care of it. */
|
|
|
4365 if (b->base_buffer)
|
|
|
4366 continue;
|
|
|
4367
|
|
|
4368 /* Check for auto save enabled
|
|
|
4369 and file changed since last auto save
|
|
|
4370 and file changed since last real save. */
|
|
|
4371 if (GC_STRINGP (b->auto_save_file_name)
|
|
|
4372 && BUF_SAVE_MODIFF (b) < BUF_MODIFF (b)
|
|
|
4373 && b->auto_save_modified < BUF_MODIFF (b)
|
|
|
4374 /* -1 means we've turned off autosaving for a while--see below. */
|
|
|
4375 && XINT (b->save_length) >= 0
|
|
|
4376 && (do_handled_files
|
|
|
4377 || NILP (Ffind_file_name_handler (b->auto_save_file_name,
|
|
|
4378 Qwrite_region))))
|
|
|
4379 {
|
|
|
4380 EMACS_TIME before_time, after_time;
|
|
|
4381
|
|
|
4382 EMACS_GET_TIME (before_time);
|
|
|
4383 /* If we had a failure, don't try again for 20 minutes. */
|
|
|
4384 if (!preparing_for_armageddon
|
|
|
4385 && b->auto_save_failure_time >= 0
|
|
|
4386 && (EMACS_SECS (before_time) - b->auto_save_failure_time <
|
|
|
4387 1200))
|
|
|
4388 continue;
|
|
|
4389
|
|
|
4390 if (!preparing_for_armageddon &&
|
|
|
4391 (XINT (b->save_length) * 10
|
|
|
4392 > (BUF_Z (b) - BUF_BEG (b)) * 13)
|
|
|
4393 /* A short file is likely to change a large fraction;
|
|
|
4394 spare the user annoying messages. */
|
|
|
4395 && XINT (b->save_length) > 5000
|
|
|
4396 /* These messages are frequent and annoying for `*mail*'. */
|
|
|
4397 && !EQ (b->filename, Qnil)
|
|
|
4398 && NILP (no_message)
|
|
|
4399 && disable_auto_save_when_buffer_shrinks)
|
|
|
4400 {
|
|
|
4401 /* It has shrunk too much; turn off auto-saving here.
|
|
|
4402 Unless we're about to crash, in which case auto-save it
|
|
|
4403 anyway.
|
|
|
4404 */
|
|
|
4405 message
|
|
|
4406 ("Buffer %s has shrunk a lot; auto save turned off there",
|
|
16
|
4407 XSTRING_DATA (b->name));
|
|
0
|
4408 /* Turn off auto-saving until there's a real save,
|
|
|
4409 and prevent any more warnings. */
|
|
|
4410 b->save_length = make_int (-1);
|
|
|
4411 if (!gc_in_progress)
|
|
|
4412 Fsleep_for (make_int (1));
|
|
|
4413 continue;
|
|
|
4414 }
|
|
|
4415 set_buffer_internal (b);
|
|
|
4416 if (!auto_saved && GC_NILP (no_message))
|
|
|
4417 {
|
|
|
4418 static CONST unsigned char *msg
|
|
|
4419 = (CONST unsigned char *) "Auto-saving...";
|
|
|
4420 echo_area_message (selected_frame (), msg, Qnil,
|
|
|
4421 0, strlen ((CONST char *) msg),
|
|
|
4422 Qauto_saving);
|
|
|
4423 }
|
|
|
4424
|
|
|
4425 /* Open the auto-save list file, if necessary.
|
|
|
4426 We only do this now so that the file only exists
|
|
|
4427 if we actually auto-saved any files. */
|
|
|
4428 if (!auto_saved && GC_STRINGP (listfile) && listdesc < 0)
|
|
|
4429 {
|
|
|
4430 #ifdef DOS_NT
|
|
70
|
4431 listdesc = open ((char *) XSTRING_DATA (listfile),
|
|
0
|
4432 O_WRONLY | O_TRUNC | O_CREAT | O_TEXT,
|
|
|
4433 S_IREAD | S_IWRITE);
|
|
|
4434 #else /* not DOS_NT */
|
|
16
|
4435 listdesc = creat ((char *) XSTRING_DATA (listfile), 0666);
|
|
0
|
4436 #endif /* not DOS_NT */
|
|
|
4437
|
|
|
4438 /* Arrange to close that file whether or not we get
|
|
|
4439 an error. */
|
|
|
4440 if (listdesc >= 0)
|
|
|
4441 record_unwind_protect (do_auto_save_unwind,
|
|
|
4442 make_int (listdesc));
|
|
|
4443 }
|
|
|
4444
|
|
|
4445 /* Record all the buffers that we are auto-saving in
|
|
|
4446 the special file that lists them. For each of
|
|
|
4447 these buffers, record visited name (if any) and
|
|
|
4448 auto save name. */
|
|
|
4449 if (listdesc >= 0)
|
|
|
4450 {
|
|
|
4451 Extbyte *auto_save_file_name_ext;
|
|
|
4452 Extcount auto_save_file_name_ext_len;
|
|
|
4453
|
|
|
4454 GET_STRING_FILENAME_DATA_ALLOCA
|
|
|
4455 (b->auto_save_file_name,
|
|
|
4456 auto_save_file_name_ext,
|
|
|
4457 auto_save_file_name_ext_len);
|
|
|
4458 if (!NILP (b->filename))
|
|
|
4459 {
|
|
|
4460 Extbyte *filename_ext;
|
|
|
4461 Extcount filename_ext_len;
|
|
|
4462
|
|
|
4463 GET_STRING_FILENAME_DATA_ALLOCA (b->filename,
|
|
|
4464 filename_ext,
|
|
|
4465 filename_ext_len);
|
|
|
4466 write (listdesc, filename_ext, filename_ext_len);
|
|
|
4467 }
|
|
|
4468 write (listdesc, "\n", 1);
|
|
|
4469 write (listdesc, auto_save_file_name_ext,
|
|
|
4470 auto_save_file_name_ext_len);
|
|
|
4471 write (listdesc, "\n", 1);
|
|
|
4472 }
|
|
|
4473
|
|
110
|
4474 /* dmoore - In a bad scenario we've set b=XBUFFER(buf)
|
|
|
4475 based on values in Vbuffer_alist. auto_save_1 may
|
|
|
4476 cause lisp handlers to run. Those handlers may kill
|
|
|
4477 the buffer and then GC. Since the buffer is killed,
|
|
|
4478 it's no longer in Vbuffer_alist so it might get reaped
|
|
|
4479 by the GC. We also need to protect tail. */
|
|
|
4480 /* #### There is probably a lot of other code which has
|
|
|
4481 pointers into buffers which may get blown away by
|
|
|
4482 handlers. */
|
|
|
4483 {
|
|
|
4484 struct gcpro gcpro1, gcpro2;
|
|
|
4485 GCPRO2 (buf, tail);
|
|
|
4486 condition_case_1 (Qt,
|
|
|
4487 auto_save_1, Qnil,
|
|
|
4488 auto_save_error, Qnil);
|
|
|
4489 UNGCPRO;
|
|
|
4490 }
|
|
|
4491 /* Handler killed our saved current-buffer! Pick any. */
|
|
|
4492 if (!BUFFER_LIVE_P (XBUFFER (old)))
|
|
|
4493 XSETBUFFER (old, current_buffer);
|
|
|
4494
|
|
|
4495 set_buffer_internal (XBUFFER (old));
|
|
0
|
4496 auto_saved++;
|
|
110
|
4497
|
|
|
4498 /* Handler killed their own buffer! */
|
|
|
4499 if (!BUFFER_LIVE_P(b))
|
|
|
4500 continue;
|
|
|
4501
|
|
0
|
4502 b->auto_save_modified = BUF_MODIFF (b);
|
|
|
4503 b->save_length = make_int (BUF_SIZE (b));
|
|
|
4504 EMACS_GET_TIME (after_time);
|
|
|
4505 /* If auto-save took more than 60 seconds,
|
|
|
4506 assume it was an NFS failure that got a timeout. */
|
|
|
4507 if (EMACS_SECS (after_time) - EMACS_SECS (before_time) > 60)
|
|
|
4508 b->auto_save_failure_time = EMACS_SECS (after_time);
|
|
|
4509 }
|
|
|
4510 }
|
|
|
4511 }
|
|
|
4512
|
|
|
4513 /* Prevent another auto save till enough input events come in. */
|
|
|
4514 if (auto_saved)
|
|
|
4515 record_auto_save ();
|
|
|
4516
|
|
|
4517 /* If we didn't save anything into the listfile, remove the old
|
|
|
4518 one because nothing needed to be auto-saved. Do this afterwards
|
|
|
4519 rather than before in case we get a crash attempting to autosave
|
|
|
4520 (in that case we'd still want the old one around). */
|
|
|
4521 if (listdesc < 0 && !auto_saved && GC_STRINGP (listfile))
|
|
16
|
4522 unlink ((char *) XSTRING_DATA (listfile));
|
|
0
|
4523
|
|
|
4524 /* Show "...done" only if the echo area would otherwise be empty. */
|
|
|
4525 if (auto_saved && NILP (no_message)
|
|
|
4526 && NILP (clear_echo_area (selected_frame (), Qauto_saving, 0)))
|
|
|
4527 {
|
|
|
4528 static CONST unsigned char *msg
|
|
|
4529 = (CONST unsigned char *)"Auto-saving...done";
|
|
|
4530 echo_area_message (selected_frame (), msg, Qnil, 0,
|
|
|
4531 strlen ((CONST char *) msg), Qauto_saving);
|
|
|
4532 }
|
|
|
4533
|
|
|
4534 Vquit_flag = oquit;
|
|
|
4535
|
|
|
4536 RETURN_UNGCPRO (unbind_to (speccount, Qnil));
|
|
|
4537 }
|
|
|
4538
|
|
20
|
4539 DEFUN ("set-buffer-auto-saved", Fset_buffer_auto_saved, 0, 0, 0, /*
|
|
0
|
4540 Mark current buffer as auto-saved with its current text.
|
|
|
4541 No auto-save file will be written until the buffer changes again.
|
|
20
|
4542 */
|
|
|
4543 ())
|
|
0
|
4544 {
|
|
|
4545 current_buffer->auto_save_modified = BUF_MODIFF (current_buffer);
|
|
|
4546 current_buffer->save_length = make_int (BUF_SIZE (current_buffer));
|
|
|
4547 current_buffer->auto_save_failure_time = -1;
|
|
|
4548 return Qnil;
|
|
|
4549 }
|
|
|
4550
|
|
20
|
4551 DEFUN ("clear-buffer-auto-save-failure", Fclear_buffer_auto_save_failure, 0, 0, 0, /*
|
|
0
|
4552 Clear any record of a recent auto-save failure in the current buffer.
|
|
20
|
4553 */
|
|
|
4554 ())
|
|
0
|
4555 {
|
|
|
4556 current_buffer->auto_save_failure_time = -1;
|
|
|
4557 return Qnil;
|
|
|
4558 }
|
|
|
4559
|
|
20
|
4560 DEFUN ("recent-auto-save-p", Frecent_auto_save_p, 0, 0, 0, /*
|
|
0
|
4561 Return t if buffer has been auto-saved since last read in or saved.
|
|
20
|
4562 */
|
|
|
4563 ())
|
|
0
|
4564 {
|
|
|
4565 return (BUF_SAVE_MODIFF (current_buffer) <
|
|
|
4566 current_buffer->auto_save_modified) ? Qt : Qnil;
|
|
|
4567 }
|
|
|
4568
|
|
|
4569
|
|
|
4570 /************************************************************************/
|
|
|
4571 /* initialization */
|
|
|
4572 /************************************************************************/
|
|
|
4573
|
|
|
4574 void
|
|
|
4575 syms_of_fileio (void)
|
|
|
4576 {
|
|
|
4577 defsymbol (&Qexpand_file_name, "expand-file-name");
|
|
|
4578 defsymbol (&Qfile_truename, "file-truename");
|
|
|
4579 defsymbol (&Qsubstitute_in_file_name, "substitute-in-file-name");
|
|
|
4580 defsymbol (&Qdirectory_file_name, "directory-file-name");
|
|
|
4581 defsymbol (&Qfile_name_directory, "file-name-directory");
|
|
|
4582 defsymbol (&Qfile_name_nondirectory, "file-name-nondirectory");
|
|
|
4583 defsymbol (&Qunhandled_file_name_directory, "unhandled-file-name-directory");
|
|
|
4584 defsymbol (&Qfile_name_as_directory, "file-name-as-directory");
|
|
|
4585 defsymbol (&Qcopy_file, "copy-file");
|
|
|
4586 defsymbol (&Qmake_directory_internal, "make-directory-internal");
|
|
|
4587 defsymbol (&Qdelete_directory, "delete-directory");
|
|
|
4588 defsymbol (&Qdelete_file, "delete-file");
|
|
|
4589 defsymbol (&Qrename_file, "rename-file");
|
|
|
4590 defsymbol (&Qadd_name_to_file, "add-name-to-file");
|
|
|
4591 defsymbol (&Qmake_symbolic_link, "make-symbolic-link");
|
|
|
4592 defsymbol (&Qfile_exists_p, "file-exists-p");
|
|
|
4593 defsymbol (&Qfile_executable_p, "file-executable-p");
|
|
|
4594 defsymbol (&Qfile_readable_p, "file-readable-p");
|
|
|
4595 defsymbol (&Qfile_symlink_p, "file-symlink-p");
|
|
|
4596 defsymbol (&Qfile_writable_p, "file-writable-p");
|
|
|
4597 defsymbol (&Qfile_directory_p, "file-directory-p");
|
|
|
4598 defsymbol (&Qfile_regular_p, "file-regular-p");
|
|
|
4599 defsymbol (&Qfile_accessible_directory_p, "file-accessible-directory-p");
|
|
|
4600 defsymbol (&Qfile_modes, "file-modes");
|
|
|
4601 defsymbol (&Qset_file_modes, "set-file-modes");
|
|
|
4602 defsymbol (&Qfile_newer_than_file_p, "file-newer-than-file-p");
|
|
|
4603 defsymbol (&Qinsert_file_contents, "insert-file-contents");
|
|
|
4604 defsymbol (&Qwrite_region, "write-region");
|
|
|
4605 defsymbol (&Qverify_visited_file_modtime, "verify-visited-file-modtime");
|
|
|
4606 defsymbol (&Qset_visited_file_modtime, "set-visited-file-modtime");
|
|
|
4607 defsymbol (&Qset_buffer_modtime, "set-buffer-modtime");
|
|
|
4608 #ifdef DOS_NT
|
|
|
4609 defsymbol (&Qfind_buffer_file_type, "find-buffer-file-type");
|
|
|
4610 #endif /* DOS_NT */
|
|
|
4611 defsymbol (&Qcar_less_than_car, "car-less-than-car"); /* Vomitous! */
|
|
|
4612
|
|
|
4613 defsymbol (&Qfile_name_handler_alist, "file-name-handler-alist");
|
|
|
4614 defsymbol (&Qauto_save_hook, "auto-save-hook");
|
|
|
4615 defsymbol (&Qauto_save_error, "auto-save-error");
|
|
|
4616 defsymbol (&Qauto_saving, "auto-saving");
|
|
|
4617
|
|
|
4618 defsymbol (&Qformat_decode, "format-decode");
|
|
|
4619 defsymbol (&Qformat_annotate_function, "format-annotate-function");
|
|
|
4620
|
|
|
4621 defsymbol (&Qcompute_buffer_file_truename, "compute-buffer-file-truename");
|
|
|
4622 deferror (&Qfile_error, "file-error", "File error", Qio_error);
|
|
|
4623 deferror (&Qfile_already_exists, "file-already-exists",
|
|
|
4624 "File already exists", Qfile_error);
|
|
|
4625
|
|
20
|
4626 DEFSUBR (Ffind_file_name_handler);
|
|
|
4627
|
|
|
4628 DEFSUBR (Ffile_name_directory);
|
|
|
4629 DEFSUBR (Ffile_name_nondirectory);
|
|
|
4630 DEFSUBR (Funhandled_file_name_directory);
|
|
|
4631 DEFSUBR (Ffile_name_as_directory);
|
|
|
4632 DEFSUBR (Fdirectory_file_name);
|
|
|
4633 DEFSUBR (Fmake_temp_name);
|
|
|
4634 DEFSUBR (Fexpand_file_name);
|
|
|
4635 DEFSUBR (Ffile_truename);
|
|
|
4636 DEFSUBR (Fsubstitute_in_file_name);
|
|
|
4637 DEFSUBR (Fcopy_file);
|
|
|
4638 DEFSUBR (Fmake_directory_internal);
|
|
|
4639 DEFSUBR (Fdelete_directory);
|
|
|
4640 DEFSUBR (Fdelete_file);
|
|
|
4641 DEFSUBR (Frename_file);
|
|
|
4642 DEFSUBR (Fadd_name_to_file);
|
|
0
|
4643 #ifdef S_IFLNK
|
|
20
|
4644 DEFSUBR (Fmake_symbolic_link);
|
|
0
|
4645 #endif /* S_IFLNK */
|
|
|
4646 #ifdef VMS
|
|
20
|
4647 DEFSUBR (Fdefine_logical_name);
|
|
0
|
4648 #endif /* VMS */
|
|
|
4649 #ifdef HPUX_NET
|
|
20
|
4650 DEFSUBR (Fsysnetunam);
|
|
0
|
4651 #endif /* HPUX_NET */
|
|
20
|
4652 DEFSUBR (Ffile_name_absolute_p);
|
|
|
4653 DEFSUBR (Ffile_exists_p);
|
|
|
4654 DEFSUBR (Ffile_executable_p);
|
|
|
4655 DEFSUBR (Ffile_readable_p);
|
|
|
4656 DEFSUBR (Ffile_writable_p);
|
|
|
4657 DEFSUBR (Ffile_symlink_p);
|
|
|
4658 DEFSUBR (Ffile_directory_p);
|
|
|
4659 DEFSUBR (Ffile_accessible_directory_p);
|
|
|
4660 DEFSUBR (Ffile_regular_p);
|
|
|
4661 DEFSUBR (Ffile_modes);
|
|
|
4662 DEFSUBR (Fset_file_modes);
|
|
|
4663 DEFSUBR (Fset_default_file_modes);
|
|
|
4664 DEFSUBR (Fdefault_file_modes);
|
|
|
4665 DEFSUBR (Funix_sync);
|
|
|
4666 DEFSUBR (Ffile_newer_than_file_p);
|
|
|
4667 DEFSUBR (Finsert_file_contents_internal);
|
|
|
4668 DEFSUBR (Fwrite_region_internal);
|
|
|
4669 DEFSUBR (Fcar_less_than_car); /* Vomitous! */
|
|
|
4670 DEFSUBR (Fcdr_less_than_cdr); /* Yeah oh yeah bucko .... */
|
|
0
|
4671 #if 0
|
|
20
|
4672 DEFSUBR (Fencrypt_string);
|
|
|
4673 DEFSUBR (Fdecrypt_string);
|
|
0
|
4674 #endif
|
|
20
|
4675 DEFSUBR (Fverify_visited_file_modtime);
|
|
|
4676 DEFSUBR (Fclear_visited_file_modtime);
|
|
|
4677 DEFSUBR (Fvisited_file_modtime);
|
|
|
4678 DEFSUBR (Fset_visited_file_modtime);
|
|
|
4679 DEFSUBR (Fset_buffer_modtime);
|
|
|
4680
|
|
|
4681 DEFSUBR (Fdo_auto_save);
|
|
|
4682 DEFSUBR (Fset_buffer_auto_saved);
|
|
|
4683 DEFSUBR (Fclear_buffer_auto_save_failure);
|
|
|
4684 DEFSUBR (Frecent_auto_save_p);
|
|
0
|
4685 }
|
|
|
4686
|
|
|
4687 void
|
|
|
4688 vars_of_fileio (void)
|
|
|
4689 {
|
|
|
4690 DEFVAR_LISP ("auto-save-file-format", &Vauto_save_file_format /*
|
|
|
4691 *Format in which to write auto-save files.
|
|
|
4692 Should be a list of symbols naming formats that are defined in `format-alist'.
|
|
|
4693 If it is t, which is the default, auto-save files are written in the
|
|
|
4694 same format as a regular save would use.
|
|
|
4695 */ );
|
|
|
4696 Vauto_save_file_format = Qt;
|
|
|
4697
|
|
|
4698 DEFVAR_BOOL ("vms-stmlf-recfm", &vms_stmlf_recfm /*
|
|
|
4699 *Non-nil means write new files with record format `stmlf'.
|
|
|
4700 nil means use format `var'. This variable is meaningful only on VMS.
|
|
|
4701 */ );
|
|
|
4702 vms_stmlf_recfm = 0;
|
|
|
4703
|
|
|
4704 DEFVAR_LISP ("file-name-handler-alist", &Vfile_name_handler_alist /*
|
|
|
4705 *Alist of elements (REGEXP . HANDLER) for file names handled specially.
|
|
|
4706 If a file name matches REGEXP, then all I/O on that file is done by calling
|
|
|
4707 HANDLER.
|
|
|
4708
|
|
|
4709 The first argument given to HANDLER is the name of the I/O primitive
|
|
|
4710 to be handled; the remaining arguments are the arguments that were
|
|
|
4711 passed to that primitive. For example, if you do
|
|
|
4712 (file-exists-p FILENAME)
|
|
|
4713 and FILENAME is handled by HANDLER, then HANDLER is called like this:
|
|
|
4714 (funcall HANDLER 'file-exists-p FILENAME)
|
|
|
4715 The function `find-file-name-handler' checks this list for a handler
|
|
|
4716 for its argument.
|
|
|
4717 */ );
|
|
|
4718 Vfile_name_handler_alist = Qnil;
|
|
|
4719
|
|
|
4720 DEFVAR_LISP ("after-insert-file-functions", &Vafter_insert_file_functions /*
|
|
|
4721 A list of functions to be called at the end of `insert-file-contents'.
|
|
|
4722 Each is passed one argument, the number of bytes inserted. It should return
|
|
|
4723 the new byte count, and leave point the same. If `insert-file-contents' is
|
|
|
4724 intercepted by a handler from `file-name-handler-alist', that handler is
|
|
|
4725 responsible for calling the after-insert-file-functions if appropriate.
|
|
|
4726 */ );
|
|
|
4727 Vafter_insert_file_functions = Qnil;
|
|
|
4728
|
|
|
4729 DEFVAR_LISP ("write-region-annotate-functions",
|
|
|
4730 &Vwrite_region_annotate_functions /*
|
|
|
4731 A list of functions to be called at the start of `write-region'.
|
|
|
4732 Each is passed two arguments, START and END as for `write-region'.
|
|
|
4733 It should return a list of pairs (POSITION . STRING) of strings to be
|
|
|
4734 effectively inserted at the specified positions of the file being written
|
|
|
4735 \(1 means to insert before the first byte written). The POSITIONs must be
|
|
|
4736 sorted into increasing order. If there are several functions in the list,
|
|
|
4737 the several lists are merged destructively.
|
|
|
4738 */ );
|
|
|
4739 Vwrite_region_annotate_functions = Qnil;
|
|
|
4740
|
|
|
4741 DEFVAR_LISP ("write-region-annotations-so-far",
|
|
|
4742 &Vwrite_region_annotations_so_far /*
|
|
|
4743 When an annotation function is called, this holds the previous annotations.
|
|
|
4744 These are the annotations made by other annotation functions
|
|
|
4745 that were already called. See also `write-region-annotate-functions'.
|
|
|
4746 */ );
|
|
|
4747 Vwrite_region_annotations_so_far = Qnil;
|
|
|
4748
|
|
|
4749 DEFVAR_LISP ("inhibit-file-name-handlers", &Vinhibit_file_name_handlers /*
|
|
|
4750 A list of file name handlers that temporarily should not be used.
|
|
|
4751 This applies only to the operation `inhibit-file-name-operation'.
|
|
|
4752 */ );
|
|
|
4753 Vinhibit_file_name_handlers = Qnil;
|
|
|
4754
|
|
|
4755 DEFVAR_LISP ("inhibit-file-name-operation", &Vinhibit_file_name_operation /*
|
|
|
4756 The operation for which `inhibit-file-name-handlers' is applicable.
|
|
|
4757 */ );
|
|
|
4758 Vinhibit_file_name_operation = Qnil;
|
|
|
4759
|
|
|
4760 DEFVAR_LISP ("auto-save-list-file-name", &Vauto_save_list_file_name /*
|
|
|
4761 File name in which we write a list of all auto save file names.
|
|
|
4762 */ );
|
|
|
4763 Vauto_save_list_file_name = Qnil;
|
|
|
4764
|
|
|
4765 DEFVAR_BOOL ("disable-auto-save-when-buffer-shrinks",
|
|
|
4766 &disable_auto_save_when_buffer_shrinks /*
|
|
|
4767 If non-nil, auto-saving is disabled when a buffer shrinks too much.
|
|
|
4768 This is to prevent you from losing your edits if you accidentally
|
|
|
4769 delete a large chunk of the buffer and don't notice it until too late.
|
|
|
4770 Saving the buffer normally turns auto-save back on.
|
|
|
4771 */ );
|
|
|
4772 disable_auto_save_when_buffer_shrinks = 1;
|
|
|
4773 }
|
