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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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211
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23 /* More syncing: FSF Emacs 19.34.6 by Marc Paquette <marcpa@cam.org> */
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0
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24
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25 #include <config.h>
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26 #include "lisp.h"
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272
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27 #include <limits.h>
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0
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28
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29 #include "buffer.h"
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30 #include "events.h"
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31 #include "frame.h"
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32 #include "insdel.h"
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33 #include "lstream.h"
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34 #include "redisplay.h"
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35 #include "sysdep.h"
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36 #include "window.h" /* minibuf_level */
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259
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37 #ifdef FILE_CODING
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38 #include "file-coding.h"
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70
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39 #endif
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0
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40
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2
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41 #ifdef HAVE_LIBGEN_H /* Must come before sysfile.h */
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42 #include <libgen.h>
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43 #endif
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0
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44 #include "sysfile.h"
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45 #include "sysproc.h"
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46 #include "syspwd.h"
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47 #include "systime.h"
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48 #include "sysdir.h"
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49
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50 #ifdef HPUX
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51 #include <netio.h>
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52 #ifdef HPUX_PRE_8_0
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53 #include <errnet.h>
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211
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54 #endif /* HPUX_PRE_8_0 */
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55 #endif /* HPUX */
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56
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57 #ifdef WINDOWSNT
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58 #define NOMINMAX 1
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59 #include <windows.h>
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265
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60 #include <direct.h>
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61 #include <fcntl.h>
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211
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62 #include <stdlib.h>
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63 #endif /* not WINDOWSNT */
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64
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265
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65 #ifdef WINDOWSNT
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211
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66 #define CORRECT_DIR_SEPS(s) \
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67 do { if ('/' == DIRECTORY_SEP) dostounix_filename (s); \
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68 else unixtodos_filename (s); \
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69 } while (0)
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70 #define IS_DRIVE(x) isalpha (x)
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71 /* Need to lower-case the drive letter, or else expanded
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72 filenames will sometimes compare inequal, because
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73 `expand-file-name' doesn't always down-case the drive letter. */
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74 #define DRIVE_LETTER(x) (tolower (x))
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265
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75 #endif /* WINDOWSNT */
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0
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76
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272
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77 int lisp_to_time (Lisp_Object, time_t *);
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78 Lisp_Object time_to_lisp (time_t);
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79
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0
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80 /* Nonzero during writing of auto-save files */
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81 static int auto_saving;
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82
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83 /* Set by auto_save_1 to mode of original file so Fwrite_region_internal
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84 will create a new file with the same mode as the original */
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85 static int auto_save_mode_bits;
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86
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151
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87 /* Alist of elements (REGEXP . HANDLER) for file names
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0
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88 whose I/O is done with a special handler. */
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89 Lisp_Object Vfile_name_handler_alist;
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90
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91 /* Format for auto-save files */
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92 Lisp_Object Vauto_save_file_format;
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93
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94 /* Lisp functions for translating file formats */
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95 Lisp_Object Qformat_decode, Qformat_annotate_function;
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96
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97 /* Functions to be called to process text properties in inserted file. */
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98 Lisp_Object Vafter_insert_file_functions;
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99
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100 /* Functions to be called to create text property annotations for file. */
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101 Lisp_Object Vwrite_region_annotate_functions;
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102
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103 /* During build_annotations, each time an annotation function is called,
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104 this holds the annotations made by the previous functions. */
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105 Lisp_Object Vwrite_region_annotations_so_far;
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106
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107 /* File name in which we write a list of all our auto save files. */
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108 Lisp_Object Vauto_save_list_file_name;
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109
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110 int disable_auto_save_when_buffer_shrinks;
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111
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112 Lisp_Object Qfile_name_handler_alist;
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113
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278
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114 Lisp_Object Vpath_separator;
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235
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115
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0
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116 /* These variables describe handlers that have "already" had a chance
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117 to handle the current operation.
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118
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119 Vinhibit_file_name_handlers is a list of file name handlers.
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120 Vinhibit_file_name_operation is the operation being handled.
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121 If we try to handle that operation, we ignore those handlers. */
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122
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123 static Lisp_Object Vinhibit_file_name_handlers;
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124 static Lisp_Object Vinhibit_file_name_operation;
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125
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126 Lisp_Object Qfile_error, Qfile_already_exists;
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127
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128 Lisp_Object Qauto_save_hook;
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129 Lisp_Object Qauto_save_error;
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130 Lisp_Object Qauto_saving;
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131
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132 Lisp_Object Qcar_less_than_car;
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133
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134 Lisp_Object Qcompute_buffer_file_truename;
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135
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136 /* signal a file error when errno contains a meaningful value. */
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137
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138 DOESNT_RETURN
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139 report_file_error (CONST char *string, Lisp_Object data)
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140 {
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114
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141 /* #### dmoore - This uses current_buffer, better make sure no one
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142 has GC'd the current buffer. File handlers are giving me a headache
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143 maybe I'll just always protect current_buffer around all of those
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144 calls. */
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145
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0
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146 signal_error (Qfile_error,
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147 Fcons (build_translated_string (string),
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151
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148 Fcons (lisp_strerror (errno), data)));
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0
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149 }
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150
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151 void
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152 maybe_report_file_error (CONST char *string, Lisp_Object data,
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153 Lisp_Object class, Error_behavior errb)
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154 {
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155 /* Optimization: */
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156 if (ERRB_EQ (errb, ERROR_ME_NOT))
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157 return;
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158
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159 maybe_signal_error (Qfile_error,
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160 Fcons (build_translated_string (string),
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151
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161 Fcons (lisp_strerror (errno), data)),
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0
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162 class, errb);
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163 }
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164
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165 /* signal a file error when errno does not contain a meaningful value. */
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166
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167 DOESNT_RETURN
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168 signal_file_error (CONST char *string, Lisp_Object data)
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169 {
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170 signal_error (Qfile_error,
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171 list2 (build_translated_string (string), data));
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172 }
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173
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174 void
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175 maybe_signal_file_error (CONST char *string, Lisp_Object data,
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176 Lisp_Object class, Error_behavior errb)
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177 {
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178 /* Optimization: */
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179 if (ERRB_EQ (errb, ERROR_ME_NOT))
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180 return;
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181 maybe_signal_error (Qfile_error,
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182 list2 (build_translated_string (string), data),
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183 class, errb);
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184 }
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185
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186 DOESNT_RETURN
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187 signal_double_file_error (CONST char *string1, CONST char *string2,
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188 Lisp_Object data)
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189 {
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190 signal_error (Qfile_error,
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191 list3 (build_translated_string (string1),
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192 build_translated_string (string2),
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193 data));
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194 }
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195
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196 void
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197 maybe_signal_double_file_error (CONST char *string1, CONST char *string2,
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198 Lisp_Object data, Lisp_Object class,
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199 Error_behavior errb)
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200 {
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201 /* Optimization: */
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202 if (ERRB_EQ (errb, ERROR_ME_NOT))
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203 return;
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204 maybe_signal_error (Qfile_error,
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205 list3 (build_translated_string (string1),
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206 build_translated_string (string2),
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207 data),
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208 class, errb);
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209 }
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210
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211 DOESNT_RETURN
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212 signal_double_file_error_2 (CONST char *string1, CONST char *string2,
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213 Lisp_Object data1, Lisp_Object data2)
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214 {
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215 signal_error (Qfile_error,
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151
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216 list4 (build_translated_string (string1),
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0
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217 build_translated_string (string2),
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218 data1, data2));
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219 }
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220
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221 void
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222 maybe_signal_double_file_error_2 (CONST char *string1, CONST char *string2,
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223 Lisp_Object data1, Lisp_Object data2,
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224 Lisp_Object class, Error_behavior errb)
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225 {
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226 /* Optimization: */
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227 if (ERRB_EQ (errb, ERROR_ME_NOT))
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228 return;
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229 maybe_signal_error (Qfile_error,
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151
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230 list4 (build_translated_string (string1),
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0
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231 build_translated_string (string2),
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232 data1, data2),
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233 class, errb);
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234 }
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235
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151
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236
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237 /* Just like strerror(3), except return a lisp string instead of char *.
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238 The string needs to be converted since it may be localized.
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239 Perhaps this should use strerror-coding-system instead? */
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240 Lisp_Object
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241 lisp_strerror (int errnum)
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242 {
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243 return build_ext_string (strerror (errnum), FORMAT_NATIVE);
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244 }
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245
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0
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246 static Lisp_Object
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247 close_file_unwind (Lisp_Object fd)
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248 {
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249 if (CONSP (fd))
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250 {
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251 if (INTP (XCAR (fd)))
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252 close (XINT (XCAR (fd)));
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253
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254 free_cons (XCONS (fd));
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255 }
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256 else
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257 close (XINT (fd));
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258
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259 return Qnil;
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260 }
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261
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262 static Lisp_Object
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263 close_stream_unwind (Lisp_Object stream)
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264 {
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265 Lstream_close (XLSTREAM (stream));
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266 return Qnil;
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267 }
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268
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269 /* Restore point, having saved it as a marker. */
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270
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271 static Lisp_Object
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272 restore_point_unwind (Lisp_Object point_marker)
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273 {
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274 BUF_SET_PT (current_buffer, marker_position (point_marker));
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173
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275 return Fset_marker (point_marker, Qnil, Qnil);
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0
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276 }
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277
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278 /* Versions of read() and write() that allow quitting out of the actual
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279 I/O. We don't use immediate_quit (i.e. direct longjmp() out of the
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280 signal handler) because that's way too losing.
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281
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282 (#### Actually, longjmp()ing out of the signal handler may not be
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283 as losing as I thought. See sys_do_signal() in sysdep.c.)
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284
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285 Solaris include files declare the return value as ssize_t.
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286 Is that standard? */
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287 int
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272
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288 read_allowing_quit (int fildes, void *buf, size_t size)
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0
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289 {
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290 QUIT;
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272
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291 return sys_read_1 (fildes, buf, size, 1);
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0
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292 }
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293
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294 int
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272
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295 write_allowing_quit (int fildes, CONST void *buf, size_t size)
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0
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296 {
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297 QUIT;
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272
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298 return sys_write_1 (fildes, buf, size, 1);
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0
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299 }
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300
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301
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302 Lisp_Object Qexpand_file_name;
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303 Lisp_Object Qfile_truename;
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304 Lisp_Object Qsubstitute_in_file_name;
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305 Lisp_Object Qdirectory_file_name;
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306 Lisp_Object Qfile_name_directory;
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307 Lisp_Object Qfile_name_nondirectory;
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308 Lisp_Object Qunhandled_file_name_directory;
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309 Lisp_Object Qfile_name_as_directory;
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310 Lisp_Object Qcopy_file;
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311 Lisp_Object Qmake_directory_internal;
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312 Lisp_Object Qdelete_directory;
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313 Lisp_Object Qdelete_file;
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314 Lisp_Object Qrename_file;
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315 Lisp_Object Qadd_name_to_file;
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316 Lisp_Object Qmake_symbolic_link;
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317 Lisp_Object Qfile_exists_p;
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318 Lisp_Object Qfile_executable_p;
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319 Lisp_Object Qfile_readable_p;
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320 Lisp_Object Qfile_symlink_p;
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321 Lisp_Object Qfile_writable_p;
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322 Lisp_Object Qfile_directory_p;
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323 Lisp_Object Qfile_regular_p;
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324 Lisp_Object Qfile_accessible_directory_p;
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325 Lisp_Object Qfile_modes;
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326 Lisp_Object Qset_file_modes;
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327 Lisp_Object Qfile_newer_than_file_p;
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328 Lisp_Object Qinsert_file_contents;
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329 Lisp_Object Qwrite_region;
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330 Lisp_Object Qverify_visited_file_modtime;
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331 Lisp_Object Qset_visited_file_modtime;
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332
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333 /* If FILENAME is handled specially on account of its syntax,
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334 return its handler function. Otherwise, return nil. */
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335
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20
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336 DEFUN ("find-file-name-handler", Ffind_file_name_handler, 1, 2, 0, /*
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0
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337 Return FILENAME's handler function for OPERATION, if it has one.
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338 Otherwise, return nil.
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339 A file name is handled if one of the regular expressions in
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340 `file-name-handler-alist' matches it.
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341
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342 If OPERATION equals `inhibit-file-name-operation', then we ignore
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343 any handlers that are members of `inhibit-file-name-handlers',
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344 but we still do run any other handlers. This lets handlers
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345 use the standard functions without calling themselves recursively.
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20
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346 */
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347 (filename, operation))
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0
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348 {
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116
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349 /* This function does not GC */
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263
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350 /* This function can be called during GC */
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0
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351 /* This function must not munge the match data. */
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352 Lisp_Object chain, inhibited_handlers;
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353
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354 CHECK_STRING (filename);
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355
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356 if (EQ (operation, Vinhibit_file_name_operation))
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357 inhibited_handlers = Vinhibit_file_name_handlers;
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358 else
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359 inhibited_handlers = Qnil;
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360
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227
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361 EXTERNAL_LIST_LOOP (chain, Vfile_name_handler_alist)
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0
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362 {
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363 Lisp_Object elt = XCAR (chain);
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364 if (CONSP (elt))
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365 {
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227
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366 Lisp_Object string = XCAR (elt);
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0
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367 if (STRINGP (string)
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368 && (fast_lisp_string_match (string, filename) >= 0))
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369 {
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370 Lisp_Object handler = XCDR (elt);
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371 if (NILP (Fmemq (handler, inhibited_handlers)))
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173
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372 return handler;
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0
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373 }
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374 }
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375 QUIT;
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376 }
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377 return Qnil;
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378 }
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379
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380 static Lisp_Object
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381 call2_check_string (Lisp_Object fn, Lisp_Object arg0, Lisp_Object arg1)
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382 {
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116
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383 /* This function can call lisp */
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0
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384 Lisp_Object result = call2 (fn, arg0, arg1);
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385 CHECK_STRING (result);
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173
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386 return result;
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0
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387 }
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388
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389 static Lisp_Object
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114
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390 call2_check_string_or_nil (Lisp_Object fn, Lisp_Object arg0, Lisp_Object arg1)
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|
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391 {
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116
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392 /* This function can call lisp */
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114
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393 Lisp_Object result = call2 (fn, arg0, arg1);
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|
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394 if (!NILP (result))
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395 CHECK_STRING (result);
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173
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396 return result;
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114
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397 }
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|
|
398
|
|
|
399 static Lisp_Object
|
|
151
|
400 call3_check_string (Lisp_Object fn, Lisp_Object arg0,
|
|
0
|
401 Lisp_Object arg1, Lisp_Object arg2)
|
|
|
402 {
|
|
116
|
403 /* This function can call lisp */
|
|
0
|
404 Lisp_Object result = call3 (fn, arg0, arg1, arg2);
|
|
|
405 CHECK_STRING (result);
|
|
173
|
406 return result;
|
|
0
|
407 }
|
|
|
408
|
|
|
409
|
|
20
|
410 DEFUN ("file-name-directory", Ffile_name_directory, 1, 1, 0, /*
|
|
0
|
411 Return the directory component in file name NAME.
|
|
|
412 Return nil if NAME does not include a directory.
|
|
|
413 Otherwise return a directory spec.
|
|
209
|
414 Given a Unix syntax file name, returns a string ending in slash.
|
|
20
|
415 */
|
|
|
416 (file))
|
|
0
|
417 {
|
|
120
|
418 /* This function can GC. GC checked 1997.04.06. */
|
|
0
|
419 Bufbyte *beg;
|
|
|
420 Bufbyte *p;
|
|
|
421 Lisp_Object handler;
|
|
|
422
|
|
|
423 CHECK_STRING (file);
|
|
|
424
|
|
|
425 /* If the file name has special constructs in it,
|
|
|
426 call the corresponding file handler. */
|
|
|
427 handler = Ffind_file_name_handler (file, Qfile_name_directory);
|
|
|
428 if (!NILP (handler))
|
|
173
|
429 return call2_check_string_or_nil (handler, Qfile_name_directory, file);
|
|
0
|
430
|
|
|
431 #ifdef FILE_SYSTEM_CASE
|
|
|
432 file = FILE_SYSTEM_CASE (file);
|
|
|
433 #endif
|
|
16
|
434 beg = XSTRING_DATA (file);
|
|
|
435 p = beg + XSTRING_LENGTH (file);
|
|
0
|
436
|
|
211
|
437 while (p != beg && !IS_ANY_SEP (p[-1])
|
|
265
|
438 #ifdef WINDOWSNT
|
|
211
|
439 /* only recognise drive specifier at beginning */
|
|
|
440 && !(p[-1] == ':' && p == beg + 2)
|
|
|
441 #endif
|
|
|
442 ) p--;
|
|
0
|
443
|
|
|
444 if (p == beg)
|
|
|
445 return Qnil;
|
|
265
|
446 #ifdef WINDOWSNT
|
|
0
|
447 /* Expansion of "c:" to drive and default directory. */
|
|
|
448 /* (NT does the right thing.) */
|
|
|
449 if (p == beg + 2 && beg[1] == ':')
|
|
|
450 {
|
|
|
451 /* MAXPATHLEN+1 is guaranteed to be enough space for getdefdir. */
|
|
211
|
452 Bufbyte *res = alloca (MAXPATHLEN + 1);
|
|
|
453 if (getdefdir (toupper (*beg) - 'A' + 1, res))
|
|
0
|
454 {
|
|
211
|
455 if (!IS_DIRECTORY_SEP (res[strlen ((char *) res) - 1]))
|
|
0
|
456 strcat ((char *) res, "/");
|
|
|
457 beg = res;
|
|
|
458 p = beg + strlen ((char *) beg);
|
|
|
459 }
|
|
|
460 }
|
|
211
|
461 CORRECT_DIR_SEPS (beg);
|
|
265
|
462 #endif /* WINDOWSNT */
|
|
0
|
463 return make_string (beg, p - beg);
|
|
|
464 }
|
|
|
465
|
|
20
|
466 DEFUN ("file-name-nondirectory", Ffile_name_nondirectory, 1, 1, 0, /*
|
|
0
|
467 Return file name NAME sans its directory.
|
|
|
468 For example, in a Unix-syntax file name,
|
|
|
469 this is everything after the last slash,
|
|
|
470 or the entire name if it contains no slash.
|
|
20
|
471 */
|
|
|
472 (file))
|
|
0
|
473 {
|
|
120
|
474 /* This function can GC. GC checked 1997.04.06. */
|
|
0
|
475 Bufbyte *beg, *p, *end;
|
|
|
476 Lisp_Object handler;
|
|
|
477
|
|
|
478 CHECK_STRING (file);
|
|
|
479
|
|
|
480 /* If the file name has special constructs in it,
|
|
|
481 call the corresponding file handler. */
|
|
|
482 handler = Ffind_file_name_handler (file, Qfile_name_nondirectory);
|
|
|
483 if (!NILP (handler))
|
|
173
|
484 return call2_check_string (handler, Qfile_name_nondirectory, file);
|
|
0
|
485
|
|
16
|
486 beg = XSTRING_DATA (file);
|
|
|
487 end = p = beg + XSTRING_LENGTH (file);
|
|
0
|
488
|
|
211
|
489 while (p != beg && !IS_ANY_SEP (p[-1])
|
|
265
|
490 #ifdef WINDOWSNT
|
|
211
|
491 /* only recognise drive specifier at beginning */
|
|
|
492 && !(p[-1] == ':' && p == beg + 2)
|
|
|
493 #endif
|
|
|
494 ) p--;
|
|
0
|
495
|
|
|
496 return make_string (p, end - p);
|
|
|
497 }
|
|
|
498
|
|
20
|
499 DEFUN ("unhandled-file-name-directory", Funhandled_file_name_directory, 1, 1, 0, /*
|
|
0
|
500 Return a directly usable directory name somehow associated with FILENAME.
|
|
|
501 A `directly usable' directory name is one that may be used without the
|
|
|
502 intervention of any file handler.
|
|
|
503 If FILENAME is a directly usable file itself, return
|
|
272
|
504 \(file-name-directory FILENAME).
|
|
0
|
505 The `call-process' and `start-process' functions use this function to
|
|
|
506 get a current directory to run processes in.
|
|
20
|
507 */
|
|
70
|
508 (filename))
|
|
0
|
509 {
|
|
120
|
510 /* This function can GC. GC checked 1997.04.06. */
|
|
0
|
511 Lisp_Object handler;
|
|
|
512
|
|
|
513 /* If the file name has special constructs in it,
|
|
|
514 call the corresponding file handler. */
|
|
|
515 handler = Ffind_file_name_handler (filename, Qunhandled_file_name_directory);
|
|
|
516 if (!NILP (handler))
|
|
|
517 return call2 (handler, Qunhandled_file_name_directory,
|
|
|
518 filename);
|
|
|
519
|
|
|
520 return Ffile_name_directory (filename);
|
|
|
521 }
|
|
|
522
|
|
|
523
|
|
|
524 static char *
|
|
|
525 file_name_as_directory (char *out, char *in)
|
|
|
526 {
|
|
276
|
527 int size = strlen (in);
|
|
|
528
|
|
|
529 if (size == 0)
|
|
0
|
530 {
|
|
276
|
531 out[0] = '.';
|
|
|
532 out[1] = DIRECTORY_SEP;
|
|
|
533 out[2] = '\0';
|
|
|
534 }
|
|
|
535 else
|
|
|
536 {
|
|
|
537 strcpy (out, in);
|
|
|
538 /* Append a slash if necessary */
|
|
|
539 if (!IS_ANY_SEP (out[size-1]))
|
|
|
540 {
|
|
|
541 out[size] = DIRECTORY_SEP;
|
|
|
542 out[size + 1] = '\0';
|
|
|
543 }
|
|
0
|
544 }
|
|
265
|
545 #ifdef WINDOWSNT
|
|
213
|
546 CORRECT_DIR_SEPS (out);
|
|
|
547 #endif
|
|
0
|
548 return out;
|
|
|
549 }
|
|
|
550
|
|
20
|
551 DEFUN ("file-name-as-directory", Ffile_name_as_directory, 1, 1, 0, /*
|
|
0
|
552 Return a string representing file FILENAME interpreted as a directory.
|
|
|
553 This operation exists because a directory is also a file, but its name as
|
|
|
554 a directory is different from its name as a file.
|
|
|
555 The result can be used as the value of `default-directory'
|
|
|
556 or passed as second argument to `expand-file-name'.
|
|
276
|
557 For a Unix-syntax file name, just appends a slash,
|
|
|
558 except for (file-name-as-directory \"\") => \"./\".
|
|
20
|
559 */
|
|
|
560 (file))
|
|
0
|
561 {
|
|
120
|
562 /* This function can GC. GC checked 1997.04.06. */
|
|
0
|
563 char *buf;
|
|
|
564 Lisp_Object handler;
|
|
|
565
|
|
|
566 CHECK_STRING (file);
|
|
|
567
|
|
|
568 /* If the file name has special constructs in it,
|
|
|
569 call the corresponding file handler. */
|
|
|
570 handler = Ffind_file_name_handler (file, Qfile_name_as_directory);
|
|
|
571 if (!NILP (handler))
|
|
173
|
572 return call2_check_string (handler, Qfile_name_as_directory, file);
|
|
0
|
573
|
|
16
|
574 buf = (char *) alloca (XSTRING_LENGTH (file) + 10);
|
|
0
|
575 return build_string (file_name_as_directory
|
|
16
|
576 (buf, (char *) XSTRING_DATA (file)));
|
|
0
|
577 }
|
|
|
578
|
|
|
579 /*
|
|
|
580 * Convert from directory name to filename.
|
|
211
|
581 * On UNIX, it's simple: just make sure there isn't a terminating /
|
|
265
|
582 *
|
|
0
|
583 * Value is nonzero if the string output is different from the input.
|
|
|
584 */
|
|
|
585
|
|
|
586 static int
|
|
|
587 directory_file_name (CONST char *src, char *dst)
|
|
|
588 {
|
|
|
589 long slen;
|
|
|
590
|
|
|
591 slen = strlen (src);
|
|
|
592 /* Process as Unix format: just remove any final slash.
|
|
|
593 But leave "/" unchanged; do not change it to "". */
|
|
|
594 strcpy (dst, src);
|
|
|
595 #ifdef APOLLO
|
|
|
596 /* Handle // as root for apollo's. */
|
|
|
597 if ((slen > 2 && dst[slen - 1] == '/')
|
|
|
598 || (slen > 1 && dst[0] != '/' && dst[slen - 1] == '/'))
|
|
|
599 dst[slen - 1] = 0;
|
|
|
600 #else
|
|
151
|
601 if (slen > 1
|
|
0
|
602 && IS_DIRECTORY_SEP (dst[slen - 1])
|
|
265
|
603 #ifdef WINDOWSNT
|
|
0
|
604 && !IS_ANY_SEP (dst[slen - 2])
|
|
265
|
605 #endif /* WINDOWSNT */
|
|
0
|
606 )
|
|
|
607 dst[slen - 1] = 0;
|
|
211
|
608 #endif /* APOLLO */
|
|
265
|
609 #ifdef WINDOWSNT
|
|
211
|
610 CORRECT_DIR_SEPS (dst);
|
|
265
|
611 #endif /* WINDOWSNT */
|
|
0
|
612 return 1;
|
|
|
613 }
|
|
|
614
|
|
20
|
615 DEFUN ("directory-file-name", Fdirectory_file_name, 1, 1, 0, /*
|
|
0
|
616 Return the file name of the directory named DIR.
|
|
|
617 This is the name of the file that holds the data for the directory DIR.
|
|
|
618 This operation exists because a directory is also a file, but its name as
|
|
|
619 a directory is different from its name as a file.
|
|
|
620 In Unix-syntax, this function just removes the final slash.
|
|
20
|
621 */
|
|
|
622 (directory))
|
|
0
|
623 {
|
|
120
|
624 /* This function can GC. GC checked 1997.04.06. */
|
|
0
|
625 char *buf;
|
|
|
626 Lisp_Object handler;
|
|
|
627
|
|
|
628 CHECK_STRING (directory);
|
|
|
629
|
|
|
630 #if 0 /* #### WTF? */
|
|
|
631 if (NILP (directory))
|
|
|
632 return Qnil;
|
|
|
633 #endif
|
|
|
634
|
|
|
635 /* If the file name has special constructs in it,
|
|
|
636 call the corresponding file handler. */
|
|
|
637 handler = Ffind_file_name_handler (directory, Qdirectory_file_name);
|
|
|
638 if (!NILP (handler))
|
|
173
|
639 return call2_check_string (handler, Qdirectory_file_name, directory);
|
|
16
|
640 buf = (char *) alloca (XSTRING_LENGTH (directory) + 20);
|
|
|
641 directory_file_name ((char *) XSTRING_DATA (directory), buf);
|
|
0
|
642 return build_string (buf);
|
|
|
643 }
|
|
274
|
644
|
|
|
645 /* Fmake_temp_name used to be a simple wrapper around mktemp(), but it
|
|
|
646 proved too broken for our purposes (it supported only 26 or 62
|
|
276
|
647 unique names under some implementations). For example, this
|
|
|
648 arbitrary limit broke generation of Gnus Incoming* files.
|
|
|
649
|
|
|
650 This implementation is better than what one usually finds in libc.
|
|
|
651 --hniksic */
|
|
0
|
652
|
|
20
|
653 DEFUN ("make-temp-name", Fmake_temp_name, 1, 1, 0, /*
|
|
274
|
654 Generate temporary file name starting with PREFIX.
|
|
|
655 The Emacs process number forms part of the result, so there is no
|
|
|
656 danger of generating a name being used by another process.
|
|
|
657
|
|
278
|
658 In addition, this function makes an attempt to choose a name which
|
|
|
659 has no existing file. To make this work, PREFIX should be an
|
|
|
660 absolute file name.
|
|
20
|
661 */
|
|
|
662 (prefix))
|
|
0
|
663 {
|
|
274
|
664 static char tbl[64] = {
|
|
|
665 'A','B','C','D','E','F','G','H',
|
|
|
666 'I','J','K','L','M','N','O','P',
|
|
|
667 'Q','R','S','T','U','V','W','X',
|
|
|
668 'Y','Z','a','b','c','d','e','f',
|
|
|
669 'g','h','i','j','k','l','m','n',
|
|
|
670 'o','p','q','r','s','t','u','v',
|
|
|
671 'w','x','y','z','0','1','2','3',
|
|
276
|
672 '4','5','6','7','8','9','-','_' };
|
|
|
673 static unsigned count, count_initialized_p;
|
|
|
674
|
|
274
|
675 Lisp_Object val;
|
|
0
|
676 Bytecount len;
|
|
274
|
677 Bufbyte *p, *data;
|
|
276
|
678 unsigned pid;
|
|
0
|
679
|
|
|
680 CHECK_STRING (prefix);
|
|
274
|
681
|
|
|
682 /* I was tempted to apply Fexpand_file_name on PREFIX here, but it's
|
|
|
683 a bad idea because:
|
|
|
684
|
|
|
685 1) It might change the prefix, so the resulting string might not
|
|
|
686 begin with PREFIX. This violates the principle of least
|
|
|
687 surprise.
|
|
|
688
|
|
|
689 2) It breaks under many unforeseeable circumstances, such as with
|
|
|
690 the code that uses (make-temp-name "") instead of
|
|
|
691 (make-temp-name "./").
|
|
|
692
|
|
276
|
693 3) It might yield unexpected (to stat(2)) results in the presence
|
|
|
694 of EFS and file name handlers. */
|
|
274
|
695
|
|
16
|
696 len = XSTRING_LENGTH (prefix);
|
|
274
|
697 val = make_uninit_string (len + 6);
|
|
16
|
698 data = XSTRING_DATA (val);
|
|
|
699 memcpy (data, XSTRING_DATA (prefix), len);
|
|
274
|
700 p = data + len;
|
|
|
701
|
|
278
|
702 /* VAL is created by adding 6 characters to PREFIX. The first three
|
|
|
703 are the PID of this process, in base 64, and the second three are
|
|
|
704 incremented if the file already exists. This ensures 262144
|
|
|
705 unique file names per PID per PREFIX. */
|
|
274
|
706
|
|
276
|
707 pid = (unsigned)getpid ();
|
|
274
|
708 *p++ = tbl[pid & 63], pid >>= 6;
|
|
|
709 *p++ = tbl[pid & 63], pid >>= 6;
|
|
|
710 *p++ = tbl[pid & 63], pid >>= 6;
|
|
|
711
|
|
276
|
712 /* Here we try to minimize useless stat'ing when this function is
|
|
|
713 invoked many times successively with the same PREFIX. We achieve
|
|
|
714 this by initializing count to a random value, and incrementing it
|
|
|
715 afterwards. */
|
|
|
716 if (!count_initialized_p)
|
|
274
|
717 {
|
|
276
|
718 count = (unsigned)time (NULL);
|
|
|
719 count_initialized_p = 1;
|
|
|
720 }
|
|
|
721
|
|
|
722 while (1)
|
|
|
723 {
|
|
|
724 struct stat ignored;
|
|
|
725 unsigned num = count++;
|
|
|
726
|
|
|
727 p[0] = tbl[num & 63], num >>= 6;
|
|
|
728 p[1] = tbl[num & 63], num >>= 6;
|
|
|
729 p[2] = tbl[num & 63], num >>= 6;
|
|
|
730
|
|
278
|
731 if (stat ((CONST char *) data, &ignored) < 0)
|
|
274
|
732 {
|
|
276
|
733 /* We want to return only if errno is ENOENT. */
|
|
|
734 if (errno == ENOENT)
|
|
|
735 return val;
|
|
|
736 else
|
|
|
737 /* The error here is dubious, but there is little else we
|
|
|
738 can do. The alternatives are to return nil, which is
|
|
|
739 as bad as (and in many cases worse than) throwing the
|
|
|
740 error, or to ignore the error, which will likely result
|
|
|
741 in looping through 262144 stat's, which is not only
|
|
|
742 dog-slow, but also useless since it will fallback to
|
|
|
743 the errow below, anyway. */
|
|
|
744 report_file_error ("Cannot create temporary name for prefix",
|
|
|
745 list1 (prefix));
|
|
|
746 /* not reached */
|
|
274
|
747 }
|
|
|
748 }
|
|
|
749 signal_simple_error ("Cannot create temporary name for prefix", prefix);
|
|
|
750 RETURN_NOT_REACHED (Qnil);
|
|
0
|
751 }
|
|
|
752
|
|
20
|
753 DEFUN ("expand-file-name", Fexpand_file_name, 1, 2, 0, /*
|
|
243
|
754 Convert filename NAME to absolute, and canonicalize it.
|
|
|
755 Second arg DEFAULT-DIRECTORY is directory to start with if NAME is relative
|
|
|
756 (does not start with slash); if DEFAULT-DIRECTORY is nil or missing,
|
|
0
|
757 the current buffer's value of default-directory is used.
|
|
243
|
758 File name components that are `.' are removed, and
|
|
|
759 so are file name components followed by `..', along with the `..' itself;
|
|
0
|
760 note that these simplifications are done without checking the resulting
|
|
243
|
761 file names in the file system.
|
|
0
|
762 An initial `~/' expands to your home directory.
|
|
|
763 An initial `~USER/' expands to USER's home directory.
|
|
|
764 See also the function `substitute-in-file-name'.
|
|
20
|
765 */
|
|
243
|
766 (name, default_directory))
|
|
0
|
767 {
|
|
243
|
768 /* This function can GC */
|
|
0
|
769 Bufbyte *nm;
|
|
151
|
770
|
|
0
|
771 Bufbyte *newdir, *p, *o;
|
|
|
772 int tlen;
|
|
|
773 Bufbyte *target;
|
|
265
|
774 #ifdef WINDOWSNT
|
|
211
|
775 int drive = 0;
|
|
|
776 int collapse_newdir = 1;
|
|
265
|
777 #else
|
|
|
778 struct passwd *pw;
|
|
|
779 #endif /* WINDOWSNT */
|
|
211
|
780 int length;
|
|
0
|
781 Lisp_Object handler;
|
|
151
|
782
|
|
0
|
783 CHECK_STRING (name);
|
|
|
784
|
|
|
785 /* If the file name has special constructs in it,
|
|
|
786 call the corresponding file handler. */
|
|
|
787 handler = Ffind_file_name_handler (name, Qexpand_file_name);
|
|
|
788 if (!NILP (handler))
|
|
243
|
789 return call3_check_string (handler, Qexpand_file_name, name,
|
|
|
790 default_directory);
|
|
|
791
|
|
|
792 /* Use the buffer's default-directory if DEFAULT_DIRECTORY is omitted. */
|
|
|
793 if (NILP (default_directory))
|
|
|
794 default_directory = current_buffer->directory;
|
|
|
795 if (! STRINGP (default_directory))
|
|
|
796 default_directory = build_string ("/");
|
|
|
797
|
|
|
798 if (!NILP (default_directory))
|
|
0
|
799 {
|
|
243
|
800 handler = Ffind_file_name_handler (default_directory, Qexpand_file_name);
|
|
|
801 if (!NILP (handler))
|
|
|
802 return call3 (handler, Qexpand_file_name, name, default_directory);
|
|
0
|
803 }
|
|
243
|
804
|
|
|
805 o = XSTRING_DATA (default_directory);
|
|
|
806
|
|
|
807 /* Make sure DEFAULT_DIRECTORY is properly expanded.
|
|
0
|
808 It would be better to do this down below where we actually use
|
|
243
|
809 default_directory. Unfortunately, calling Fexpand_file_name recursively
|
|
0
|
810 could invoke GC, and the strings might be relocated. This would
|
|
|
811 be annoying because we have pointers into strings lying around
|
|
|
812 that would need adjusting, and people would add new pointers to
|
|
|
813 the code and forget to adjust them, resulting in intermittent bugs.
|
|
|
814 Putting this call here avoids all that crud.
|
|
|
815
|
|
|
816 The EQ test avoids infinite recursion. */
|
|
243
|
817 if (! NILP (default_directory) && !EQ (default_directory, name)
|
|
211
|
818 /* Save time in some common cases - as long as default_directory
|
|
|
819 is not relative, it can be canonicalized with name below (if it
|
|
|
820 is needed at all) without requiring it to be expanded now. */
|
|
265
|
821 #ifdef WINDOWSNT
|
|
243
|
822 /* Detect MSDOS file names with drive specifiers. */
|
|
|
823 && ! (IS_DRIVE (o[0]) && (IS_DEVICE_SEP (o[1]) && IS_DIRECTORY_SEP (o[2])))
|
|
|
824 /* Detect Windows file names in UNC format. */
|
|
|
825 && ! (IS_DIRECTORY_SEP (o[0]) && IS_DIRECTORY_SEP (o[1]))
|
|
265
|
826
|
|
|
827 #else /* not WINDOWSNT */
|
|
|
828
|
|
243
|
829 /* Detect Unix absolute file names (/... alone is not absolute on
|
|
|
830 DOS or Windows). */
|
|
|
831 && ! (IS_DIRECTORY_SEP (o[0]))
|
|
265
|
832 #endif /* not WINDOWSNT */
|
|
243
|
833 )
|
|
0
|
834 {
|
|
|
835 struct gcpro gcpro1;
|
|
|
836
|
|
243
|
837 GCPRO1 (name);
|
|
|
838 default_directory = Fexpand_file_name (default_directory, Qnil);
|
|
0
|
839 UNGCPRO;
|
|
|
840 }
|
|
|
841
|
|
|
842 #ifdef FILE_SYSTEM_CASE
|
|
|
843 name = FILE_SYSTEM_CASE (name);
|
|
|
844 #endif
|
|
|
845
|
|
243
|
846 /* #### dmoore - this is ugly, clean this up. Looks like nm pointing
|
|
|
847 into name should be safe during all of this, though. */
|
|
16
|
848 nm = XSTRING_DATA (name);
|
|
151
|
849
|
|
265
|
850 #ifdef WINDOWSNT
|
|
211
|
851 /* We will force directory separators to be either all \ or /, so make
|
|
|
852 a local copy to modify, even if there ends up being no change. */
|
|
|
853 nm = strcpy (alloca (strlen (nm) + 1), nm);
|
|
|
854
|
|
|
855 /* Find and remove drive specifier if present; this makes nm absolute
|
|
|
856 even if the rest of the name appears to be relative. */
|
|
0
|
857 {
|
|
|
858 Bufbyte *colon = strrchr (nm, ':');
|
|
243
|
859
|
|
0
|
860 if (colon)
|
|
211
|
861 /* Only recognize colon as part of drive specifier if there is a
|
|
|
862 single alphabetic character preceeding the colon (and if the
|
|
|
863 character before the drive letter, if present, is a directory
|
|
|
864 separator); this is to support the remote system syntax used by
|
|
|
865 ange-ftp, and the "po:username" syntax for POP mailboxes. */
|
|
243
|
866 look_again:
|
|
0
|
867 if (nm == colon)
|
|
|
868 nm++;
|
|
211
|
869 else if (IS_DRIVE (colon[-1])
|
|
|
870 && (colon == nm + 1 || IS_DIRECTORY_SEP (colon[-2])))
|
|
0
|
871 {
|
|
|
872 drive = colon[-1];
|
|
|
873 nm = colon + 1;
|
|
211
|
874 }
|
|
|
875 else
|
|
|
876 {
|
|
|
877 while (--colon >= nm)
|
|
|
878 if (colon[0] == ':')
|
|
|
879 goto look_again;
|
|
151
|
880 }
|
|
0
|
881 }
|
|
211
|
882
|
|
|
883 /* If we see "c://somedir", we want to strip the first slash after the
|
|
|
884 colon when stripping the drive letter. Otherwise, this expands to
|
|
|
885 "//somedir". */
|
|
|
886 if (drive && IS_DIRECTORY_SEP (nm[0]) && IS_DIRECTORY_SEP (nm[1]))
|
|
|
887 nm++;
|
|
265
|
888
|
|
211
|
889 /* Discard any previous drive specifier if nm is now in UNC format. */
|
|
|
890 if (IS_DIRECTORY_SEP (nm[0]) && IS_DIRECTORY_SEP (nm[1]))
|
|
|
891 {
|
|
|
892 drive = 0;
|
|
|
893 }
|
|
|
894 #endif /* WINDOWSNT */
|
|
|
895
|
|
|
896 /* If nm is absolute, look for /./ or /../ sequences; if none are
|
|
|
897 found, we can probably return right away. We will avoid allocating
|
|
|
898 a new string if name is already fully expanded. */
|
|
243
|
899 if (
|
|
|
900 IS_DIRECTORY_SEP (nm[0])
|
|
211
|
901 #ifdef WINDOWSNT
|
|
|
902 && (drive || IS_DIRECTORY_SEP (nm[1]))
|
|
189
|
903 #endif
|
|
211
|
904 )
|
|
0
|
905 {
|
|
|
906 /* If it turns out that the filename we want to return is just a
|
|
|
907 suffix of FILENAME, we don't need to go through and edit
|
|
|
908 things; we just need to construct a new string using data
|
|
|
909 starting at the middle of FILENAME. If we set lose to a
|
|
|
910 non-zero value, that means we've discovered that we can't do
|
|
|
911 that cool trick. */
|
|
|
912 int lose = 0;
|
|
|
913
|
|
|
914 p = nm;
|
|
|
915 while (*p)
|
|
|
916 {
|
|
243
|
917 /* Since we know the name is absolute, we can assume that each
|
|
0
|
918 element starts with a "/". */
|
|
|
919
|
|
|
920 /* "." and ".." are hairy. */
|
|
|
921 if (IS_DIRECTORY_SEP (p[0])
|
|
|
922 && p[1] == '.'
|
|
|
923 && (IS_DIRECTORY_SEP (p[2])
|
|
|
924 || p[2] == 0
|
|
|
925 || (p[2] == '.' && (IS_DIRECTORY_SEP (p[3])
|
|
|
926 || p[3] == 0))))
|
|
|
927 lose = 1;
|
|
|
928 p++;
|
|
|
929 }
|
|
|
930 if (!lose)
|
|
|
931 {
|
|
265
|
932 #ifdef WINDOWSNT
|
|
211
|
933 /* Make sure directories are all separated with / or \ as
|
|
|
934 desired, but avoid allocation of a new string when not
|
|
|
935 required. */
|
|
|
936 CORRECT_DIR_SEPS (nm);
|
|
|
937 if (IS_DIRECTORY_SEP (nm[1]))
|
|
|
938 {
|
|
|
939 if (strcmp (nm, XSTRING_DATA (name)) != 0)
|
|
|
940 name = build_string (nm);
|
|
|
941 }
|
|
243
|
942 /* drive must be set, so this is okay */
|
|
265
|
943 else if (strcmp (nm - 2, XSTRING_DATA (name)) != 0)
|
|
243
|
944 {
|
|
|
945 name = make_string (nm - 2, p - nm + 2);
|
|
|
946 XSTRING_DATA (name)[0] = DRIVE_LETTER (drive);
|
|
|
947 XSTRING_DATA (name)[1] = ':';
|
|
|
948 }
|
|
211
|
949 return name;
|
|
265
|
950 #else /* not WINDOWSNT */
|
|
16
|
951 if (nm == XSTRING_DATA (name))
|
|
0
|
952 return name;
|
|
272
|
953 return build_string ((char *) nm);
|
|
265
|
954 #endif /* not WINDOWSNT */
|
|
0
|
955 }
|
|
|
956 }
|
|
|
957
|
|
211
|
958 /* At this point, nm might or might not be an absolute file name. We
|
|
|
959 need to expand ~ or ~user if present, otherwise prefix nm with
|
|
|
960 default_directory if nm is not absolute, and finally collapse /./
|
|
|
961 and /foo/../ sequences.
|
|
|
962
|
|
|
963 We set newdir to be the appropriate prefix if one is needed:
|
|
243
|
964 - the relevant user directory if nm starts with ~ or ~user
|
|
|
965 - the specified drive's working dir (DOS/NT only) if nm does not
|
|
|
966 start with /
|
|
|
967 - the value of default_directory.
|
|
211
|
968
|
|
|
969 Note that these prefixes are not guaranteed to be absolute (except
|
|
|
970 for the working dir of a drive). Therefore, to ensure we always
|
|
|
971 return an absolute name, if the final prefix is not absolute we
|
|
|
972 append it to the current working directory. */
|
|
0
|
973
|
|
|
974 newdir = 0;
|
|
|
975
|
|
|
976 if (nm[0] == '~') /* prefix ~ */
|
|
|
977 {
|
|
|
978 if (IS_DIRECTORY_SEP (nm[1])
|
|
243
|
979 || nm[1] == 0) /* ~ by itself */
|
|
0
|
980 {
|
|
|
981 if (!(newdir = (Bufbyte *) egetenv ("HOME")))
|
|
|
982 newdir = (Bufbyte *) "";
|
|
|
983 nm++;
|
|
265
|
984 #ifdef WINDOWSNT
|
|
211
|
985 collapse_newdir = 0;
|
|
243
|
986 #endif
|
|
0
|
987 }
|
|
|
988 else /* ~user/filename */
|
|
|
989 {
|
|
209
|
990 for (p = nm; *p && (!IS_DIRECTORY_SEP (*p)); p++);
|
|
0
|
991 o = (Bufbyte *) alloca (p - nm + 1);
|
|
|
992 memcpy (o, (char *) nm, p - nm);
|
|
|
993 o [p - nm] = 0;
|
|
|
994
|
|
243
|
995 /* #### marcpa's syncing note: FSF uses getpwnam even on NT,
|
|
|
996 which does not work. The following works only if ~USER
|
|
|
997 names the user who runs this instance of XEmacs. While
|
|
|
998 NT is single-user (for the moment) you still can have
|
|
|
999 multiple user profiles users defined, each with its HOME.
|
|
|
1000 Therefore, the following should be reworked to handle
|
|
|
1001 this case. */
|
|
0
|
1002 #ifdef WINDOWSNT
|
|
243
|
1003 /* Now if the file given is "~foo/file" and HOME="c:/", then
|
|
|
1004 we want the file to be named "c:/file" ("~foo" becomes
|
|
|
1005 "c:/"). The variable o has "~foo", so we can use the
|
|
|
1006 length of that string to offset nm. August Hill, 31 Aug
|
|
|
1007 1998. */
|
|
211
|
1008 newdir = (Bufbyte *) egetenv ("HOME");
|
|
0
|
1009 dostounix_filename (newdir);
|
|
195
|
1010 nm += strlen(o) + 1;
|
|
0
|
1011 #else /* not WINDOWSNT */
|
|
|
1012 /* Jamie reports that getpwnam() can get wedged by SIGIO/SIGALARM
|
|
|
1013 occurring in it. (It can call select()). */
|
|
|
1014 slow_down_interrupts ();
|
|
|
1015 pw = (struct passwd *) getpwnam ((char *) o + 1);
|
|
|
1016 speed_up_interrupts ();
|
|
|
1017 if (pw)
|
|
|
1018 {
|
|
|
1019 newdir = (Bufbyte *) pw -> pw_dir;
|
|
|
1020 nm = p;
|
|
|
1021 }
|
|
|
1022 #endif /* not WINDOWSNT */
|
|
|
1023
|
|
|
1024 /* If we don't find a user of that name, leave the name
|
|
|
1025 unchanged; don't move nm forward to p. */
|
|
|
1026 }
|
|
|
1027 }
|
|
|
1028
|
|
265
|
1029 #ifdef WINDOWSNT
|
|
211
|
1030 /* On DOS and Windows, nm is absolute if a drive name was specified;
|
|
|
1031 use the drive's current directory as the prefix if needed. */
|
|
|
1032 if (!newdir && drive)
|
|
|
1033 {
|
|
|
1034 /* Get default directory if needed to make nm absolute. */
|
|
|
1035 if (!IS_DIRECTORY_SEP (nm[0]))
|
|
|
1036 {
|
|
|
1037 newdir = alloca (MAXPATHLEN + 1);
|
|
|
1038 if (!getdefdir (toupper (drive) - 'A' + 1, newdir))
|
|
|
1039 newdir = NULL;
|
|
|
1040 }
|
|
|
1041 if (!newdir)
|
|
|
1042 {
|
|
|
1043 /* Either nm starts with /, or drive isn't mounted. */
|
|
|
1044 newdir = alloca (4);
|
|
|
1045 newdir[0] = DRIVE_LETTER (drive);
|
|
|
1046 newdir[1] = ':';
|
|
|
1047 newdir[2] = '/';
|
|
|
1048 newdir[3] = 0;
|
|
|
1049 }
|
|
|
1050 }
|
|
265
|
1051 #endif /* WINDOWSNT */
|
|
211
|
1052
|
|
|
1053 /* Finally, if no prefix has been specified and nm is not absolute,
|
|
|
1054 then it must be expanded relative to default_directory. */
|
|
243
|
1055
|
|
211
|
1056 if (1
|
|
265
|
1057 #ifndef WINDOWSNT
|
|
243
|
1058 /* /... alone is not absolute on DOS and Windows. */
|
|
|
1059 && !IS_DIRECTORY_SEP (nm[0])
|
|
265
|
1060 #else
|
|
211
|
1061 && !(IS_DIRECTORY_SEP (nm[0]) && IS_DIRECTORY_SEP (nm[1]))
|
|
|
1062 #endif
|
|
243
|
1063 && !newdir)
|
|
0
|
1064 {
|
|
243
|
1065 newdir = XSTRING_DATA (default_directory);
|
|
0
|
1066 }
|
|
|
1067
|
|
265
|
1068 #ifdef WINDOWSNT
|
|
211
|
1069 if (newdir)
|
|
|
1070 {
|
|
|
1071 /* First ensure newdir is an absolute name. */
|
|
|
1072 if (
|
|
|
1073 /* Detect MSDOS file names with drive specifiers. */
|
|
|
1074 ! (IS_DRIVE (newdir[0])
|
|
|
1075 && IS_DEVICE_SEP (newdir[1]) && IS_DIRECTORY_SEP (newdir[2]))
|
|
|
1076 /* Detect Windows file names in UNC format. */
|
|
|
1077 && ! (IS_DIRECTORY_SEP (newdir[0]) && IS_DIRECTORY_SEP (newdir[1]))
|
|
|
1078 )
|
|
|
1079 {
|
|
|
1080 /* Effectively, let newdir be (expand-file-name newdir cwd).
|
|
|
1081 Because of the admonition against calling expand-file-name
|
|
|
1082 when we have pointers into lisp strings, we accomplish this
|
|
|
1083 indirectly by prepending newdir to nm if necessary, and using
|
|
|
1084 cwd (or the wd of newdir's drive) as the new newdir. */
|
|
|
1085
|
|
|
1086 if (IS_DRIVE (newdir[0]) && newdir[1] == ':')
|
|
|
1087 {
|
|
|
1088 drive = newdir[0];
|
|
|
1089 newdir += 2;
|
|
|
1090 }
|
|
|
1091 if (!IS_DIRECTORY_SEP (nm[0]))
|
|
|
1092 {
|
|
|
1093 char * tmp = alloca (strlen (newdir) + strlen (nm) + 2);
|
|
|
1094 file_name_as_directory (tmp, newdir);
|
|
|
1095 strcat (tmp, nm);
|
|
|
1096 nm = tmp;
|
|
|
1097 }
|
|
|
1098 newdir = alloca (MAXPATHLEN + 1);
|
|
|
1099 if (drive)
|
|
|
1100 {
|
|
|
1101 if (!getdefdir (toupper (drive) - 'A' + 1, newdir))
|
|
|
1102 newdir = "/";
|
|
|
1103 }
|
|
|
1104 else
|
|
|
1105 getwd (newdir);
|
|
|
1106 }
|
|
|
1107
|
|
|
1108 /* Strip off drive name from prefix, if present. */
|
|
|
1109 if (IS_DRIVE (newdir[0]) && newdir[1] == ':')
|
|
|
1110 {
|
|
|
1111 drive = newdir[0];
|
|
|
1112 newdir += 2;
|
|
|
1113 }
|
|
|
1114
|
|
|
1115 /* Keep only a prefix from newdir if nm starts with slash
|
|
225
|
1116 (/ /server/share for UNC, nothing otherwise). */
|
|
211
|
1117 if (IS_DIRECTORY_SEP (nm[0]) && collapse_newdir)
|
|
|
1118 {
|
|
|
1119 if (IS_DIRECTORY_SEP (newdir[0]) && IS_DIRECTORY_SEP (newdir[1]))
|
|
|
1120 {
|
|
|
1121 newdir = strcpy (alloca (strlen (newdir) + 1), newdir);
|
|
|
1122 p = newdir + 2;
|
|
|
1123 while (*p && !IS_DIRECTORY_SEP (*p)) p++;
|
|
|
1124 p++;
|
|
|
1125 while (*p && !IS_DIRECTORY_SEP (*p)) p++;
|
|
|
1126 *p = 0;
|
|
|
1127 }
|
|
|
1128 else
|
|
|
1129 newdir = "";
|
|
|
1130 }
|
|
|
1131 }
|
|
265
|
1132 #endif /* WINDOWSNT */
|
|
243
|
1133
|
|
|
1134 if (newdir)
|
|
0
|
1135 {
|
|
211
|
1136 /* Get rid of any slash at the end of newdir, unless newdir is
|
|
|
1137 just // (an incomplete UNC name). */
|
|
272
|
1138 length = strlen ((char *) newdir);
|
|
276
|
1139 if (length > 1 && IS_DIRECTORY_SEP (newdir[length - 1])
|
|
211
|
1140 #ifdef WINDOWSNT
|
|
|
1141 && !(length == 2 && IS_DIRECTORY_SEP (newdir[0]))
|
|
0
|
1142 #endif
|
|
211
|
1143 )
|
|
0
|
1144 {
|
|
|
1145 Bufbyte *temp = (Bufbyte *) alloca (length);
|
|
|
1146 memcpy (temp, newdir, length - 1);
|
|
|
1147 temp[length - 1] = 0;
|
|
|
1148 newdir = temp;
|
|
|
1149 }
|
|
|
1150 tlen = length + 1;
|
|
|
1151 }
|
|
|
1152 else
|
|
|
1153 tlen = 0;
|
|
|
1154
|
|
|
1155 /* Now concatenate the directory and name to new space in the stack frame */
|
|
272
|
1156 tlen += strlen ((char *) nm) + 1;
|
|
265
|
1157 #ifdef WINDOWSNT
|
|
151
|
1158 /* Add reserved space for drive name. (The Microsoft x86 compiler
|
|
0
|
1159 produces incorrect code if the following two lines are combined.) */
|
|
|
1160 target = (Bufbyte *) alloca (tlen + 2);
|
|
|
1161 target += 2;
|
|
265
|
1162 #else /* not WINDOWSNT */
|
|
0
|
1163 target = (Bufbyte *) alloca (tlen);
|
|
265
|
1164 #endif /* not WINDOWSNT */
|
|
0
|
1165 *target = 0;
|
|
|
1166
|
|
|
1167 if (newdir)
|
|
|
1168 {
|
|
|
1169 if (nm[0] == 0 || IS_DIRECTORY_SEP (nm[0]))
|
|
272
|
1170 strcpy ((char *) target, (char *) newdir);
|
|
0
|
1171 else
|
|
272
|
1172 file_name_as_directory ((char *) target, (char *) newdir);
|
|
0
|
1173 }
|
|
|
1174
|
|
272
|
1175 strcat ((char *) target, (char *) nm);
|
|
243
|
1176
|
|
|
1177 /* ASSERT (IS_DIRECTORY_SEP (target[0])) if not VMS */
|
|
0
|
1178
|
|
|
1179 /* Now canonicalize by removing /. and /foo/.. if they appear. */
|
|
|
1180
|
|
|
1181 p = target;
|
|
|
1182 o = target;
|
|
|
1183
|
|
|
1184 while (*p)
|
|
|
1185 {
|
|
|
1186 if (!IS_DIRECTORY_SEP (*p))
|
|
|
1187 {
|
|
|
1188 *o++ = *p++;
|
|
|
1189 }
|
|
|
1190 else if (IS_DIRECTORY_SEP (p[0])
|
|
243
|
1191 && p[1] == '.'
|
|
0
|
1192 && (IS_DIRECTORY_SEP (p[2])
|
|
|
1193 || p[2] == 0))
|
|
|
1194 {
|
|
|
1195 /* If "/." is the entire filename, keep the "/". Otherwise,
|
|
|
1196 just delete the whole "/.". */
|
|
|
1197 if (o == target && p[2] == '\0')
|
|
|
1198 *o++ = *p;
|
|
|
1199 p += 2;
|
|
|
1200 }
|
|
|
1201 else if (IS_DIRECTORY_SEP (p[0]) && p[1] == '.' && p[2] == '.'
|
|
|
1202 /* `/../' is the "superroot" on certain file systems. */
|
|
|
1203 && o != target
|
|
|
1204 && (IS_DIRECTORY_SEP (p[3]) || p[3] == 0))
|
|
|
1205 {
|
|
|
1206 while (o != target && (--o) && !IS_DIRECTORY_SEP (*o))
|
|
|
1207 ;
|
|
243
|
1208 /* Keep initial / only if this is the whole name. */
|
|
|
1209 if (o == target && IS_ANY_SEP (*o) && p[3] == 0)
|
|
0
|
1210 ++o;
|
|
|
1211 p += 3;
|
|
|
1212 }
|
|
|
1213 else
|
|
|
1214 {
|
|
|
1215 *o++ = *p++;
|
|
|
1216 }
|
|
|
1217 }
|
|
|
1218
|
|
|
1219 #ifdef WINDOWSNT
|
|
265
|
1220 /* At last, set drive name, except for network file name. */
|
|
211
|
1221 if (!(IS_DIRECTORY_SEP (target[0]) && IS_DIRECTORY_SEP (target[1])))
|
|
0
|
1222 {
|
|
211
|
1223 if (!drive) abort ();
|
|
0
|
1224 target -= 2;
|
|
211
|
1225 target[0] = DRIVE_LETTER (drive);
|
|
0
|
1226 target[1] = ':';
|
|
|
1227 }
|
|
211
|
1228 CORRECT_DIR_SEPS (target);
|
|
265
|
1229 #endif /* WINDOWSNT */
|
|
0
|
1230
|
|
|
1231 return make_string (target, o - target);
|
|
|
1232 }
|
|
|
1233
|
|
|
1234 #if 0 /* FSFmacs */
|
|
227
|
1235 /* another older version of expand-file-name; */
|
|
0
|
1236 #endif
|
|
|
1237
|
|
20
|
1238 DEFUN ("file-truename", Ffile_truename, 1, 2, 0, /*
|
|
0
|
1239 Return the canonical name of the given FILE.
|
|
|
1240 Second arg DEFAULT is directory to start with if FILE is relative
|
|
|
1241 (does not start with slash); if DEFAULT is nil or missing,
|
|
|
1242 the current buffer's value of default-directory is used.
|
|
|
1243 No component of the resulting pathname will be a symbolic link, as
|
|
|
1244 in the realpath() function.
|
|
20
|
1245 */
|
|
173
|
1246 (filename, default_))
|
|
0
|
1247 {
|
|
120
|
1248 /* This function can GC. GC checked 1997.04.06. */
|
|
0
|
1249 Lisp_Object expanded_name;
|
|
|
1250 Lisp_Object handler;
|
|
120
|
1251 struct gcpro gcpro1;
|
|
0
|
1252
|
|
|
1253 CHECK_STRING (filename);
|
|
|
1254
|
|
173
|
1255 expanded_name = Fexpand_file_name (filename, default_);
|
|
0
|
1256
|
|
|
1257 if (!STRINGP (expanded_name))
|
|
|
1258 return Qnil;
|
|
|
1259
|
|
|
1260 GCPRO1 (expanded_name);
|
|
|
1261 handler = Ffind_file_name_handler (expanded_name, Qfile_truename);
|
|
|
1262 UNGCPRO;
|
|
|
1263
|
|
|
1264 if (!NILP (handler))
|
|
173
|
1265 return call2_check_string (handler, Qfile_truename, expanded_name);
|
|
0
|
1266
|
|
|
1267 {
|
|
|
1268 char resolved_path[MAXPATHLEN];
|
|
|
1269 char path[MAXPATHLEN];
|
|
|
1270 char *p = path;
|
|
16
|
1271 int elen = XSTRING_LENGTH (expanded_name);
|
|
151
|
1272
|
|
0
|
1273 if (elen >= countof (path))
|
|
|
1274 goto toolong;
|
|
151
|
1275
|
|
16
|
1276 memcpy (path, XSTRING_DATA (expanded_name), elen + 1);
|
|
0
|
1277 /* memset (resolved_path, 0, sizeof (resolved_path)); */
|
|
|
1278
|
|
|
1279 /* Try doing it all at once. */
|
|
|
1280 /* !!#### Does realpath() Mule-encapsulate? */
|
|
|
1281 if (!realpath (path, resolved_path))
|
|
|
1282 {
|
|
|
1283 /* Didn't resolve it -- have to do it one component at a time. */
|
|
|
1284 /* "realpath" is a typically useless, stupid un*x piece of crap.
|
|
|
1285 It claims to return a useful value in the "error" case, but since
|
|
|
1286 there is no indication provided of how far along the pathname
|
|
|
1287 the function went before erring, there is no way to use the
|
|
|
1288 partial result returned. What a piece of junk. */
|
|
|
1289 for (;;)
|
|
|
1290 {
|
|
|
1291 p = (char *) memchr (p + 1, '/', elen - (p + 1 - path));
|
|
|
1292 if (p)
|
|
|
1293 *p = 0;
|
|
|
1294
|
|
|
1295 /* memset (resolved_path, 0, sizeof (resolved_path)); */
|
|
|
1296 if (realpath (path, resolved_path))
|
|
|
1297 {
|
|
|
1298 if (p)
|
|
|
1299 *p = '/';
|
|
|
1300 else
|
|
|
1301 break;
|
|
|
1302
|
|
|
1303 }
|
|
209
|
1304 else if (errno == ENOENT || errno == EACCES)
|
|
0
|
1305 {
|
|
|
1306 /* Failed on this component. Just tack on the rest of
|
|
|
1307 the string and we are done. */
|
|
|
1308 int rlen = strlen (resolved_path);
|
|
|
1309
|
|
|
1310 /* "On failure, it returns NULL, sets errno to indicate
|
|
|
1311 the error, and places in resolved_path the absolute pathname
|
|
|
1312 of the path component which could not be resolved." */
|
|
|
1313 if (p)
|
|
|
1314 {
|
|
|
1315 int plen = elen - (p - path);
|
|
151
|
1316
|
|
0
|
1317 if (rlen > 1 && resolved_path[rlen - 1] == '/')
|
|
|
1318 rlen = rlen - 1;
|
|
|
1319
|
|
|
1320 if (plen + rlen + 1 > countof (resolved_path))
|
|
|
1321 goto toolong;
|
|
|
1322
|
|
|
1323 resolved_path[rlen] = '/';
|
|
|
1324 memcpy (resolved_path + rlen + 1, p + 1, plen + 1 - 1);
|
|
|
1325 }
|
|
|
1326 break;
|
|
|
1327 }
|
|
|
1328 else
|
|
|
1329 goto lose;
|
|
|
1330 }
|
|
|
1331 }
|
|
|
1332
|
|
|
1333 {
|
|
|
1334 int rlen = strlen (resolved_path);
|
|
82
|
1335 if (elen > 0 && XSTRING_BYTE (expanded_name, elen - 1) == '/'
|
|
0
|
1336 && !(rlen > 0 && resolved_path[rlen - 1] == '/'))
|
|
|
1337 {
|
|
|
1338 if (rlen + 1 > countof (resolved_path))
|
|
|
1339 goto toolong;
|
|
|
1340 resolved_path[rlen] = '/';
|
|
|
1341 resolved_path[rlen + 1] = 0;
|
|
|
1342 rlen = rlen + 1;
|
|
|
1343 }
|
|
209
|
1344 return make_ext_string ((Bufbyte *) resolved_path, rlen, FORMAT_BINARY);
|
|
0
|
1345 }
|
|
|
1346
|
|
|
1347 toolong:
|
|
|
1348 errno = ENAMETOOLONG;
|
|
|
1349 goto lose;
|
|
|
1350 lose:
|
|
|
1351 report_file_error ("Finding truename", list1 (expanded_name));
|
|
|
1352 }
|
|
|
1353 return Qnil; /* suppress compiler warning */
|
|
|
1354 }
|
|
|
1355
|
|
|
1356
|
|
20
|
1357 DEFUN ("substitute-in-file-name", Fsubstitute_in_file_name, 1, 1, 0, /*
|
|
0
|
1358 Substitute environment variables referred to in FILENAME.
|
|
|
1359 `$FOO' where FOO is an environment variable name means to substitute
|
|
|
1360 the value of that variable. The variable name should be terminated
|
|
|
1361 with a character not a letter, digit or underscore; otherwise, enclose
|
|
|
1362 the entire variable name in braces.
|
|
|
1363 If `/~' appears, all of FILENAME through that `/' is discarded.
|
|
|
1364
|
|
20
|
1365 */
|
|
|
1366 (string))
|
|
0
|
1367 {
|
|
120
|
1368 /* This function can GC. GC checked 1997.04.06. */
|
|
0
|
1369 Bufbyte *nm;
|
|
|
1370
|
|
|
1371 Bufbyte *s, *p, *o, *x, *endp;
|
|
|
1372 Bufbyte *target = 0;
|
|
|
1373 int total = 0;
|
|
|
1374 int substituted = 0;
|
|
|
1375 Bufbyte *xnm;
|
|
|
1376 Lisp_Object handler;
|
|
|
1377
|
|
|
1378 CHECK_STRING (string);
|
|
|
1379
|
|
|
1380 /* If the file name has special constructs in it,
|
|
|
1381 call the corresponding file handler. */
|
|
|
1382 handler = Ffind_file_name_handler (string, Qsubstitute_in_file_name);
|
|
|
1383 if (!NILP (handler))
|
|
173
|
1384 return call2_check_string_or_nil (handler, Qsubstitute_in_file_name,
|
|
|
1385 string);
|
|
0
|
1386
|
|
16
|
1387 nm = XSTRING_DATA (string);
|
|
265
|
1388 #ifdef WINDOWSNT
|
|
211
|
1389 nm = strcpy (alloca (strlen (nm) + 1), nm);
|
|
|
1390 CORRECT_DIR_SEPS (nm);
|
|
|
1391 substituted = (strcmp (nm, XSTRING_DATA (string)) != 0);
|
|
0
|
1392 #endif
|
|
16
|
1393 endp = nm + XSTRING_LENGTH (string);
|
|
0
|
1394
|
|
|
1395 /* If /~ or // appears, discard everything through first slash. */
|
|
|
1396
|
|
|
1397 for (p = nm; p != endp; p++)
|
|
|
1398 {
|
|
211
|
1399 if ((p[0] == '~'
|
|
|
1400 #if defined (APOLLO) || defined (WINDOWSNT)
|
|
|
1401 /* // at start of file name is meaningful in Apollo and
|
|
|
1402 WindowsNT systems */
|
|
|
1403 || (IS_DIRECTORY_SEP (p[0]) && p - 1 != nm)
|
|
|
1404 #else /* not (APOLLO || WINDOWSNT) */
|
|
|
1405 || IS_DIRECTORY_SEP (p[0])
|
|
|
1406 #endif /* not (APOLLO || WINDOWSNT) */
|
|
0
|
1407 )
|
|
|
1408 && p != nm
|
|
209
|
1409 && (IS_DIRECTORY_SEP (p[-1])))
|
|
0
|
1410 {
|
|
|
1411 nm = p;
|
|
|
1412 substituted = 1;
|
|
|
1413 }
|
|
265
|
1414 #ifdef WINDOWSNT
|
|
211
|
1415 /* see comment in expand-file-name about drive specifiers */
|
|
|
1416 else if (IS_DRIVE (p[0]) && p[1] == ':'
|
|
|
1417 && p > nm && IS_DIRECTORY_SEP (p[-1]))
|
|
0
|
1418 {
|
|
|
1419 nm = p;
|
|
|
1420 substituted = 1;
|
|
|
1421 }
|
|
265
|
1422 #endif /* WINDOWSNT */
|
|
0
|
1423 }
|
|
|
1424
|
|
|
1425 /* See if any variables are substituted into the string
|
|
|
1426 and find the total length of their values in `total' */
|
|
|
1427
|
|
|
1428 for (p = nm; p != endp;)
|
|
|
1429 if (*p != '$')
|
|
|
1430 p++;
|
|
|
1431 else
|
|
|
1432 {
|
|
|
1433 p++;
|
|
|
1434 if (p == endp)
|
|
|
1435 goto badsubst;
|
|
|
1436 else if (*p == '$')
|
|
|
1437 {
|
|
|
1438 /* "$$" means a single "$" */
|
|
|
1439 p++;
|
|
|
1440 total -= 1;
|
|
|
1441 substituted = 1;
|
|
|
1442 continue;
|
|
|
1443 }
|
|
|
1444 else if (*p == '{')
|
|
|
1445 {
|
|
|
1446 o = ++p;
|
|
|
1447 while (p != endp && *p != '}') p++;
|
|
|
1448 if (*p != '}') goto missingclose;
|
|
|
1449 s = p;
|
|
|
1450 }
|
|
|
1451 else
|
|
|
1452 {
|
|
|
1453 o = p;
|
|
|
1454 while (p != endp && (isalnum (*p) || *p == '_')) p++;
|
|
|
1455 s = p;
|
|
|
1456 }
|
|
|
1457
|
|
|
1458 /* Copy out the variable name */
|
|
|
1459 target = (Bufbyte *) alloca (s - o + 1);
|
|
|
1460 strncpy ((char *) target, (char *) o, s - o);
|
|
|
1461 target[s - o] = 0;
|
|
265
|
1462 #ifdef WINDOWSNT
|
|
0
|
1463 strupr (target); /* $home == $HOME etc. */
|
|
265
|
1464 #endif /* WINDOWSNT */
|
|
0
|
1465
|
|
|
1466 /* Get variable value */
|
|
|
1467 o = (Bufbyte *) egetenv ((char *) target);
|
|
|
1468 if (!o) goto badvar;
|
|
|
1469 total += strlen ((char *) o);
|
|
|
1470 substituted = 1;
|
|
|
1471 }
|
|
|
1472
|
|
|
1473 if (!substituted)
|
|
|
1474 return string;
|
|
|
1475
|
|
|
1476 /* If substitution required, recopy the string and do it */
|
|
|
1477 /* Make space in stack frame for the new copy */
|
|
16
|
1478 xnm = (Bufbyte *) alloca (XSTRING_LENGTH (string) + total + 1);
|
|
0
|
1479 x = xnm;
|
|
|
1480
|
|
|
1481 /* Copy the rest of the name through, replacing $ constructs with values */
|
|
|
1482 for (p = nm; *p;)
|
|
|
1483 if (*p != '$')
|
|
|
1484 *x++ = *p++;
|
|
|
1485 else
|
|
|
1486 {
|
|
|
1487 p++;
|
|
|
1488 if (p == endp)
|
|
|
1489 goto badsubst;
|
|
|
1490 else if (*p == '$')
|
|
|
1491 {
|
|
|
1492 *x++ = *p++;
|
|
|
1493 continue;
|
|
|
1494 }
|
|
|
1495 else if (*p == '{')
|
|
|
1496 {
|
|
|
1497 o = ++p;
|
|
|
1498 while (p != endp && *p != '}') p++;
|
|
|
1499 if (*p != '}') goto missingclose;
|
|
|
1500 s = p++;
|
|
|
1501 }
|
|
|
1502 else
|
|
|
1503 {
|
|
|
1504 o = p;
|
|
|
1505 while (p != endp && (isalnum (*p) || *p == '_')) p++;
|
|
|
1506 s = p;
|
|
|
1507 }
|
|
|
1508
|
|
|
1509 /* Copy out the variable name */
|
|
|
1510 target = (Bufbyte *) alloca (s - o + 1);
|
|
|
1511 strncpy ((char *) target, (char *) o, s - o);
|
|
|
1512 target[s - o] = 0;
|
|
265
|
1513 #ifdef WINDOWSNT
|
|
0
|
1514 strupr (target); /* $home == $HOME etc. */
|
|
265
|
1515 #endif /* WINDOWSNT */
|
|
0
|
1516
|
|
|
1517 /* Get variable value */
|
|
|
1518 o = (Bufbyte *) egetenv ((char *) target);
|
|
|
1519 if (!o)
|
|
|
1520 goto badvar;
|
|
|
1521
|
|
|
1522 strcpy ((char *) x, (char *) o);
|
|
|
1523 x += strlen ((char *) o);
|
|
|
1524 }
|
|
|
1525
|
|
|
1526 *x = 0;
|
|
|
1527
|
|
|
1528 /* If /~ or // appears, discard everything through first slash. */
|
|
|
1529
|
|
|
1530 for (p = xnm; p != x; p++)
|
|
|
1531 if ((p[0] == '~'
|
|
211
|
1532 #if defined (APOLLO) || defined (WINDOWSNT)
|
|
0
|
1533 || (IS_DIRECTORY_SEP (p[0]) && p - 1 != xnm)
|
|
211
|
1534 #else /* not (APOLLO || WINDOWSNT) */
|
|
|
1535 || IS_DIRECTORY_SEP (p[0])
|
|
|
1536 #endif /* APOLLO || WINDOWSNT */
|
|
0
|
1537 )
|
|
|
1538 /* don't do p[-1] if that would go off the beginning --jwz */
|
|
|
1539 && p != nm && p > xnm && IS_DIRECTORY_SEP (p[-1]))
|
|
|
1540 xnm = p;
|
|
265
|
1541 #ifdef WINDOWSNT
|
|
211
|
1542 else if (IS_DRIVE (p[0]) && p[1] == ':'
|
|
|
1543 && p > nm && IS_DIRECTORY_SEP (p[-1]))
|
|
0
|
1544 xnm = p;
|
|
|
1545 #endif
|
|
|
1546
|
|
|
1547 return make_string (xnm, x - xnm);
|
|
|
1548
|
|
|
1549 badsubst:
|
|
|
1550 error ("Bad format environment-variable substitution");
|
|
|
1551 missingclose:
|
|
|
1552 error ("Missing \"}\" in environment-variable substitution");
|
|
|
1553 badvar:
|
|
|
1554 error ("Substituting nonexistent environment variable \"%s\"",
|
|
|
1555 target);
|
|
|
1556
|
|
|
1557 /* NOTREACHED */
|
|
|
1558 return Qnil; /* suppress compiler warning */
|
|
|
1559 }
|
|
|
1560
|
|
211
|
1561 /* A slightly faster and more convenient way to get
|
|
|
1562 (directory-file-name (expand-file-name FOO)). */
|
|
0
|
1563
|
|
|
1564 Lisp_Object
|
|
|
1565 expand_and_dir_to_file (Lisp_Object filename, Lisp_Object defdir)
|
|
|
1566 {
|
|
116
|
1567 /* This function can call lisp */
|
|
0
|
1568 Lisp_Object abspath;
|
|
|
1569 struct gcpro gcpro1;
|
|
|
1570
|
|
|
1571 abspath = Fexpand_file_name (filename, defdir);
|
|
116
|
1572 GCPRO1 (abspath);
|
|
0
|
1573 /* Remove final slash, if any (unless path is root).
|
|
|
1574 stat behaves differently depending! */
|
|
16
|
1575 if (XSTRING_LENGTH (abspath) > 1
|
|
82
|
1576 && IS_DIRECTORY_SEP (XSTRING_BYTE (abspath, XSTRING_LENGTH (abspath) - 1))
|
|
|
1577 && !IS_DEVICE_SEP (XSTRING_BYTE (abspath, XSTRING_LENGTH (abspath) - 2)))
|
|
0
|
1578 /* We cannot take shortcuts; they might be wrong for magic file names. */
|
|
|
1579 abspath = Fdirectory_file_name (abspath);
|
|
|
1580 UNGCPRO;
|
|
|
1581 return abspath;
|
|
|
1582 }
|
|
|
1583
|
|
|
1584 /* Signal an error if the file ABSNAME already exists.
|
|
|
1585 If INTERACTIVE is nonzero, ask the user whether to proceed,
|
|
|
1586 and bypass the error if the user says to go ahead.
|
|
|
1587 QUERYSTRING is a name for the action that is being considered
|
|
|
1588 to alter the file.
|
|
|
1589 *STATPTR is used to store the stat information if the file exists.
|
|
|
1590 If the file does not exist, STATPTR->st_mode is set to 0. */
|
|
|
1591
|
|
|
1592 static void
|
|
|
1593 barf_or_query_if_file_exists (Lisp_Object absname, CONST char *querystring,
|
|
|
1594 int interactive, struct stat *statptr)
|
|
|
1595 {
|
|
120
|
1596 /* This function can GC. GC checked 1997.04.06. */
|
|
0
|
1597 struct stat statbuf;
|
|
|
1598
|
|
|
1599 /* stat is a good way to tell whether the file exists,
|
|
|
1600 regardless of what access permissions it has. */
|
|
16
|
1601 if (stat ((char *) XSTRING_DATA (absname), &statbuf) >= 0)
|
|
0
|
1602 {
|
|
|
1603 Lisp_Object tem;
|
|
116
|
1604
|
|
0
|
1605 if (interactive)
|
|
116
|
1606 {
|
|
|
1607 Lisp_Object prompt;
|
|
|
1608 struct gcpro gcpro1;
|
|
|
1609
|
|
|
1610 prompt = emacs_doprnt_string_c
|
|
0
|
1611 ((CONST Bufbyte *) GETTEXT ("File %s already exists; %s anyway? "),
|
|
16
|
1612 Qnil, -1, XSTRING_DATA (absname),
|
|
116
|
1613 GETTEXT (querystring));
|
|
151
|
1614
|
|
116
|
1615 GCPRO1 (prompt);
|
|
|
1616 tem = call1 (Qyes_or_no_p, prompt);
|
|
|
1617 UNGCPRO;
|
|
|
1618 }
|
|
0
|
1619 else
|
|
|
1620 tem = Qnil;
|
|
116
|
1621
|
|
0
|
1622 if (NILP (tem))
|
|
|
1623 Fsignal (Qfile_already_exists,
|
|
|
1624 list2 (build_translated_string ("File already exists"),
|
|
|
1625 absname));
|
|
|
1626 if (statptr)
|
|
|
1627 *statptr = statbuf;
|
|
|
1628 }
|
|
|
1629 else
|
|
|
1630 {
|
|
|
1631 if (statptr)
|
|
|
1632 statptr->st_mode = 0;
|
|
|
1633 }
|
|
|
1634 return;
|
|
|
1635 }
|
|
|
1636
|
|
20
|
1637 DEFUN ("copy-file", Fcopy_file, 2, 4,
|
|
|
1638 "fCopy file: \nFCopy %s to file: \np\nP", /*
|
|
0
|
1639 Copy FILE to NEWNAME. Both args must be strings.
|
|
|
1640 Signals a `file-already-exists' error if file NEWNAME already exists,
|
|
|
1641 unless a third argument OK-IF-ALREADY-EXISTS is supplied and non-nil.
|
|
|
1642 A number as third arg means request confirmation if NEWNAME already exists.
|
|
|
1643 This is what happens in interactive use with M-x.
|
|
|
1644 Fourth arg KEEP-TIME non-nil means give the new file the same
|
|
|
1645 last-modified time as the old one. (This works on only some systems.)
|
|
|
1646 A prefix arg makes KEEP-TIME non-nil.
|
|
20
|
1647 */
|
|
74
|
1648 (filename, newname, ok_if_already_exists, keep_time))
|
|
0
|
1649 {
|
|
120
|
1650 /* This function can GC. GC checked 1997.04.06. */
|
|
0
|
1651 int ifd, ofd, n;
|
|
|
1652 char buf[16 * 1024];
|
|
|
1653 struct stat st, out_st;
|
|
|
1654 Lisp_Object handler;
|
|
|
1655 int speccount = specpdl_depth ();
|
|
|
1656 struct gcpro gcpro1, gcpro2;
|
|
|
1657 /* Lisp_Object args[6]; */
|
|
|
1658 int input_file_statable_p;
|
|
|
1659
|
|
|
1660 GCPRO2 (filename, newname);
|
|
|
1661 CHECK_STRING (filename);
|
|
|
1662 CHECK_STRING (newname);
|
|
|
1663 filename = Fexpand_file_name (filename, Qnil);
|
|
|
1664 newname = Fexpand_file_name (newname, Qnil);
|
|
|
1665
|
|
|
1666 /* If the input file name has special constructs in it,
|
|
|
1667 call the corresponding file handler. */
|
|
|
1668 handler = Ffind_file_name_handler (filename, Qcopy_file);
|
|
|
1669 /* Likewise for output file name. */
|
|
|
1670 if (NILP (handler))
|
|
|
1671 handler = Ffind_file_name_handler (newname, Qcopy_file);
|
|
|
1672 if (!NILP (handler))
|
|
|
1673 {
|
|
|
1674 UNGCPRO;
|
|
|
1675 return call5 (handler, Qcopy_file, filename, newname,
|
|
74
|
1676 ok_if_already_exists, keep_time);
|
|
0
|
1677 }
|
|
|
1678
|
|
|
1679 /* When second argument is a directory, copy the file into it.
|
|
|
1680 (copy-file "foo" "bar/") == (copy-file "foo" "bar/foo")
|
|
|
1681 */
|
|
|
1682 if (!NILP (Ffile_directory_p (newname)))
|
|
|
1683 {
|
|
|
1684 Lisp_Object args[3];
|
|
|
1685 struct gcpro ngcpro1;
|
|
|
1686 int i = 1;
|
|
|
1687
|
|
151
|
1688 args[0] = newname;
|
|
0
|
1689 args[1] = Qnil; args[2] = Qnil;
|
|
151
|
1690 NGCPRO1 (*args);
|
|
0
|
1691 ngcpro1.nvars = 3;
|
|
82
|
1692 if (XSTRING_BYTE (newname, XSTRING_LENGTH (newname) - 1) != '/')
|
|
0
|
1693 args[i++] = build_string ("/");
|
|
|
1694 args[i++] = Ffile_name_nondirectory (filename);
|
|
|
1695 newname = Fconcat (i, args);
|
|
|
1696 NUNGCPRO;
|
|
|
1697 }
|
|
|
1698
|
|
|
1699 if (NILP (ok_if_already_exists)
|
|
|
1700 || INTP (ok_if_already_exists))
|
|
|
1701 barf_or_query_if_file_exists (newname, "copy to it",
|
|
|
1702 INTP (ok_if_already_exists), &out_st);
|
|
16
|
1703 else if (stat ((CONST char *) XSTRING_DATA (newname), &out_st) < 0)
|
|
0
|
1704 out_st.st_mode = 0;
|
|
|
1705
|
|
251
|
1706 ifd = interruptible_open ((char *) XSTRING_DATA (filename), O_RDONLY | OPEN_BINARY, 0);
|
|
0
|
1707 if (ifd < 0)
|
|
227
|
1708 report_file_error ("Opening input file", list1 (filename));
|
|
0
|
1709
|
|
|
1710 record_unwind_protect (close_file_unwind, make_int (ifd));
|
|
|
1711
|
|
|
1712 /* We can only copy regular files and symbolic links. Other files are not
|
|
|
1713 copyable by us. */
|
|
|
1714 input_file_statable_p = (fstat (ifd, &st) >= 0);
|
|
|
1715
|
|
265
|
1716 #ifndef WINDOWSNT
|
|
0
|
1717 if (out_st.st_mode != 0
|
|
|
1718 && st.st_dev == out_st.st_dev && st.st_ino == out_st.st_ino)
|
|
|
1719 {
|
|
|
1720 errno = 0;
|
|
|
1721 report_file_error ("Input and output files are the same",
|
|
227
|
1722 list2 (filename, newname));
|
|
0
|
1723 }
|
|
|
1724 #endif
|
|
|
1725
|
|
|
1726 #if defined (S_ISREG) && defined (S_ISLNK)
|
|
|
1727 if (input_file_statable_p)
|
|
|
1728 {
|
|
|
1729 if (!(S_ISREG (st.st_mode))
|
|
|
1730 /* XEmacs: have to allow S_ISCHR in order to copy /dev/null */
|
|
|
1731 #ifdef S_ISCHR
|
|
|
1732 && !(S_ISCHR (st.st_mode))
|
|
|
1733 #endif
|
|
|
1734 && !(S_ISLNK (st.st_mode)))
|
|
|
1735 {
|
|
|
1736 #if defined (EISDIR)
|
|
|
1737 /* Get a better looking error message. */
|
|
|
1738 errno = EISDIR;
|
|
|
1739 #endif /* EISDIR */
|
|
227
|
1740 report_file_error ("Non-regular file", list1 (filename));
|
|
0
|
1741 }
|
|
|
1742 }
|
|
|
1743 #endif /* S_ISREG && S_ISLNK */
|
|
|
1744
|
|
251
|
1745 ofd = open( (char *) XSTRING_DATA (newname),
|
|
|
1746 O_WRONLY | O_CREAT | O_TRUNC | OPEN_BINARY, CREAT_MODE);
|
|
0
|
1747 if (ofd < 0)
|
|
|
1748 report_file_error ("Opening output file", list1 (newname));
|
|
|
1749
|
|
|
1750 {
|
|
|
1751 Lisp_Object ofd_locative = noseeum_cons (make_int (ofd), Qnil);
|
|
|
1752
|
|
|
1753 record_unwind_protect (close_file_unwind, ofd_locative);
|
|
|
1754
|
|
|
1755 while ((n = read_allowing_quit (ifd, buf, sizeof (buf))) > 0)
|
|
|
1756 {
|
|
|
1757 if (write_allowing_quit (ofd, buf, n) != n)
|
|
|
1758 report_file_error ("I/O error", list1 (newname));
|
|
|
1759 }
|
|
|
1760
|
|
|
1761 /* Closing the output clobbers the file times on some systems. */
|
|
|
1762 if (close (ofd) < 0)
|
|
227
|
1763 report_file_error ("I/O error", list1 (newname));
|
|
0
|
1764
|
|
|
1765 if (input_file_statable_p)
|
|
|
1766 {
|
|
74
|
1767 if (!NILP (keep_time))
|
|
0
|
1768 {
|
|
|
1769 EMACS_TIME atime, mtime;
|
|
|
1770 EMACS_SET_SECS_USECS (atime, st.st_atime, 0);
|
|
|
1771 EMACS_SET_SECS_USECS (mtime, st.st_mtime, 0);
|
|
16
|
1772 if (set_file_times ((char *) XSTRING_DATA (newname), atime,
|
|
0
|
1773 mtime))
|
|
227
|
1774 report_file_error ("I/O error", list1 (newname));
|
|
0
|
1775 }
|
|
16
|
1776 chmod ((CONST char *) XSTRING_DATA (newname),
|
|
0
|
1777 st.st_mode & 07777);
|
|
|
1778 }
|
|
|
1779
|
|
|
1780 /* We'll close it by hand */
|
|
|
1781 XCAR (ofd_locative) = Qnil;
|
|
|
1782
|
|
|
1783 /* Close ifd */
|
|
|
1784 unbind_to (speccount, Qnil);
|
|
|
1785 }
|
|
|
1786
|
|
|
1787 UNGCPRO;
|
|
|
1788 return Qnil;
|
|
|
1789 }
|
|
|
1790
|
|
20
|
1791 DEFUN ("make-directory-internal", Fmake_directory_internal, 1, 1, 0, /*
|
|
0
|
1792 Create a directory. One argument, a file name string.
|
|
20
|
1793 */
|
|
173
|
1794 (dirname_))
|
|
0
|
1795 {
|
|
120
|
1796 /* This function can GC. GC checked 1997.04.06. */
|
|
0
|
1797 char dir [MAXPATHLEN];
|
|
|
1798 Lisp_Object handler;
|
|
|
1799 struct gcpro gcpro1;
|
|
151
|
1800
|
|
173
|
1801 CHECK_STRING (dirname_);
|
|
|
1802 dirname_ = Fexpand_file_name (dirname_, Qnil);
|
|
|
1803
|
|
|
1804 GCPRO1 (dirname_);
|
|
|
1805 handler = Ffind_file_name_handler (dirname_, Qmake_directory_internal);
|
|
0
|
1806 UNGCPRO;
|
|
|
1807 if (!NILP (handler))
|
|
173
|
1808 return (call2 (handler, Qmake_directory_internal, dirname_));
|
|
|
1809
|
|
272
|
1810 if (XSTRING_LENGTH (dirname_) > (Bytecount) (sizeof (dir) - 1))
|
|
0
|
1811 {
|
|
|
1812 return Fsignal (Qfile_error,
|
|
|
1813 list3 (build_translated_string ("Creating directory"),
|
|
|
1814 build_translated_string ("pathame too long"),
|
|
173
|
1815 dirname_));
|
|
0
|
1816 }
|
|
173
|
1817 strncpy (dir, (char *) XSTRING_DATA (dirname_),
|
|
|
1818 XSTRING_LENGTH (dirname_) + 1);
|
|
0
|
1819
|
|
173
|
1820 if (dir [XSTRING_LENGTH (dirname_) - 1] == '/')
|
|
|
1821 dir [XSTRING_LENGTH (dirname_) - 1] = 0;
|
|
0
|
1822
|
|
|
1823 #ifdef WINDOWSNT
|
|
|
1824 if (mkdir (dir) != 0)
|
|
|
1825 #else
|
|
|
1826 if (mkdir (dir, 0777) != 0)
|
|
|
1827 #endif
|
|
173
|
1828 report_file_error ("Creating directory", list1 (dirname_));
|
|
0
|
1829
|
|
|
1830 return Qnil;
|
|
|
1831 }
|
|
|
1832
|
|
20
|
1833 DEFUN ("delete-directory", Fdelete_directory, 1, 1, "FDelete directory: ", /*
|
|
0
|
1834 Delete a directory. One argument, a file name or directory name string.
|
|
20
|
1835 */
|
|
173
|
1836 (dirname_))
|
|
0
|
1837 {
|
|
120
|
1838 /* This function can GC. GC checked 1997.04.06. */
|
|
0
|
1839 Lisp_Object handler;
|
|
|
1840 struct gcpro gcpro1;
|
|
151
|
1841
|
|
173
|
1842 CHECK_STRING (dirname_);
|
|
|
1843
|
|
|
1844 GCPRO1 (dirname_);
|
|
|
1845 dirname_ = Fexpand_file_name (dirname_, Qnil);
|
|
|
1846 dirname_ = Fdirectory_file_name (dirname_);
|
|
|
1847
|
|
|
1848 handler = Ffind_file_name_handler (dirname_, Qdelete_directory);
|
|
0
|
1849 UNGCPRO;
|
|
|
1850 if (!NILP (handler))
|
|
173
|
1851 return (call2 (handler, Qdelete_directory, dirname_));
|
|
|
1852
|
|
|
1853 if (rmdir ((char *) XSTRING_DATA (dirname_)) != 0)
|
|
|
1854 report_file_error ("Removing directory", list1 (dirname_));
|
|
0
|
1855
|
|
|
1856 return Qnil;
|
|
|
1857 }
|
|
|
1858
|
|
20
|
1859 DEFUN ("delete-file", Fdelete_file, 1, 1, "fDelete file: ", /*
|
|
0
|
1860 Delete specified file. One argument, a file name string.
|
|
|
1861 If file has multiple names, it continues to exist with the other names.
|
|
20
|
1862 */
|
|
|
1863 (filename))
|
|
0
|
1864 {
|
|
120
|
1865 /* This function can GC. GC checked 1997.04.06. */
|
|
0
|
1866 Lisp_Object handler;
|
|
|
1867 struct gcpro gcpro1;
|
|
151
|
1868
|
|
0
|
1869 CHECK_STRING (filename);
|
|
|
1870 filename = Fexpand_file_name (filename, Qnil);
|
|
|
1871
|
|
114
|
1872 GCPRO1 (filename);
|
|
0
|
1873 handler = Ffind_file_name_handler (filename, Qdelete_file);
|
|
|
1874 UNGCPRO;
|
|
|
1875 if (!NILP (handler))
|
|
|
1876 return call2 (handler, Qdelete_file, filename);
|
|
|
1877
|
|
16
|
1878 if (0 > unlink ((char *) XSTRING_DATA (filename)))
|
|
0
|
1879 report_file_error ("Removing old name", list1 (filename));
|
|
|
1880 return Qnil;
|
|
|
1881 }
|
|
|
1882
|
|
|
1883 static Lisp_Object
|
|
|
1884 internal_delete_file_1 (Lisp_Object ignore, Lisp_Object ignore2)
|
|
|
1885 {
|
|
|
1886 return Qt;
|
|
|
1887 }
|
|
|
1888
|
|
|
1889 /* Delete file FILENAME, returning 1 if successful and 0 if failed. */
|
|
|
1890
|
|
|
1891 int
|
|
|
1892 internal_delete_file (Lisp_Object filename)
|
|
|
1893 {
|
|
120
|
1894 /* This function can GC. GC checked 1997.04.06. */
|
|
0
|
1895 return NILP (condition_case_1 (Qt, Fdelete_file, filename,
|
|
|
1896 internal_delete_file_1, Qnil));
|
|
|
1897 }
|
|
|
1898
|
|
20
|
1899 DEFUN ("rename-file", Frename_file, 2, 3,
|
|
|
1900 "fRename file: \nFRename %s to file: \np", /*
|
|
0
|
1901 Rename FILE as NEWNAME. Both args strings.
|
|
|
1902 If file has names other than FILE, it continues to have those names.
|
|
|
1903 Signals a `file-already-exists' error if a file NEWNAME already exists
|
|
|
1904 unless optional third argument OK-IF-ALREADY-EXISTS is non-nil.
|
|
|
1905 A number as third arg means request confirmation if NEWNAME already exists.
|
|
|
1906 This is what happens in interactive use with M-x.
|
|
20
|
1907 */
|
|
|
1908 (filename, newname, ok_if_already_exists))
|
|
0
|
1909 {
|
|
120
|
1910 /* This function can GC. GC checked 1997.04.06. */
|
|
0
|
1911 Lisp_Object handler;
|
|
|
1912 struct gcpro gcpro1, gcpro2;
|
|
|
1913
|
|
|
1914 GCPRO2 (filename, newname);
|
|
|
1915 CHECK_STRING (filename);
|
|
|
1916 CHECK_STRING (newname);
|
|
|
1917 filename = Fexpand_file_name (filename, Qnil);
|
|
|
1918 newname = Fexpand_file_name (newname, Qnil);
|
|
|
1919
|
|
|
1920 /* If the file name has special constructs in it,
|
|
|
1921 call the corresponding file handler. */
|
|
|
1922 handler = Ffind_file_name_handler (filename, Qrename_file);
|
|
|
1923 if (NILP (handler))
|
|
|
1924 handler = Ffind_file_name_handler (newname, Qrename_file);
|
|
|
1925 if (!NILP (handler))
|
|
|
1926 {
|
|
|
1927 UNGCPRO;
|
|
|
1928 return call4 (handler, Qrename_file,
|
|
|
1929 filename, newname, ok_if_already_exists);
|
|
|
1930 }
|
|
|
1931
|
|
|
1932 /* When second argument is a directory, rename the file into it.
|
|
|
1933 (rename-file "foo" "bar/") == (rename-file "foo" "bar/foo")
|
|
|
1934 */
|
|
|
1935 if (!NILP (Ffile_directory_p (newname)))
|
|
|
1936 {
|
|
|
1937 Lisp_Object args[3];
|
|
|
1938 struct gcpro ngcpro1;
|
|
|
1939 int i = 1;
|
|
|
1940
|
|
151
|
1941 args[0] = newname;
|
|
0
|
1942 args[1] = Qnil; args[2] = Qnil;
|
|
151
|
1943 NGCPRO1 (*args);
|
|
0
|
1944 ngcpro1.nvars = 3;
|
|
16
|
1945 if (XSTRING_BYTE (newname, XSTRING_LENGTH (newname) - 1) != '/')
|
|
0
|
1946 args[i++] = build_string ("/");
|
|
|
1947 args[i++] = Ffile_name_nondirectory (filename);
|
|
|
1948 newname = Fconcat (i, args);
|
|
|
1949 NUNGCPRO;
|
|
|
1950 }
|
|
|
1951
|
|
|
1952 if (NILP (ok_if_already_exists)
|
|
|
1953 || INTP (ok_if_already_exists))
|
|
|
1954 barf_or_query_if_file_exists (newname, "rename to it",
|
|
|
1955 INTP (ok_if_already_exists), 0);
|
|
|
1956
|
|
211
|
1957 /* Syncing with FSF 19.34.6 note: FSF does not have conditional code for
|
|
|
1958 WINDOWSNT here; I've removed it. --marcpa */
|
|
|
1959
|
|
0
|
1960 /* FSFmacs only calls rename() here under BSD 4.1, and calls
|
|
|
1961 link() and unlink() otherwise, but that's bogus. Sometimes
|
|
|
1962 rename() succeeds where link()/unlink() fail, and we have
|
|
|
1963 configure check for rename() and emulate using link()/unlink()
|
|
|
1964 if necessary. */
|
|
16
|
1965 if (0 > rename ((char *) XSTRING_DATA (filename),
|
|
|
1966 (char *) XSTRING_DATA (newname)))
|
|
0
|
1967 {
|
|
|
1968 if (errno == EXDEV)
|
|
|
1969 {
|
|
|
1970 Fcopy_file (filename, newname,
|
|
|
1971 /* We have already prompted if it was an integer,
|
|
|
1972 so don't have copy-file prompt again. */
|
|
|
1973 ((NILP (ok_if_already_exists)) ? Qnil : Qt),
|
|
|
1974 Qt);
|
|
|
1975 Fdelete_file (filename);
|
|
|
1976 }
|
|
|
1977 else
|
|
|
1978 {
|
|
|
1979 report_file_error ("Renaming", list2 (filename, newname));
|
|
|
1980 }
|
|
|
1981 }
|
|
|
1982 UNGCPRO;
|
|
|
1983 return Qnil;
|
|
|
1984 }
|
|
|
1985
|
|
20
|
1986 DEFUN ("add-name-to-file", Fadd_name_to_file, 2, 3,
|
|
|
1987 "fAdd name to file: \nFName to add to %s: \np", /*
|
|
0
|
1988 Give FILE additional name NEWNAME. Both args strings.
|
|
|
1989 Signals a `file-already-exists' error if a file NEWNAME already exists
|
|
|
1990 unless optional third argument OK-IF-ALREADY-EXISTS is non-nil.
|
|
|
1991 A number as third arg means request confirmation if NEWNAME already exists.
|
|
|
1992 This is what happens in interactive use with M-x.
|
|
20
|
1993 */
|
|
|
1994 (filename, newname, ok_if_already_exists))
|
|
0
|
1995 {
|
|
120
|
1996 /* This function can GC. GC checked 1997.04.06. */
|
|
0
|
1997 Lisp_Object handler;
|
|
|
1998 struct gcpro gcpro1, gcpro2;
|
|
|
1999
|
|
|
2000 GCPRO2 (filename, newname);
|
|
|
2001 CHECK_STRING (filename);
|
|
|
2002 CHECK_STRING (newname);
|
|
|
2003 filename = Fexpand_file_name (filename, Qnil);
|
|
|
2004 newname = Fexpand_file_name (newname, Qnil);
|
|
|
2005
|
|
|
2006 /* If the file name has special constructs in it,
|
|
|
2007 call the corresponding file handler. */
|
|
|
2008 handler = Ffind_file_name_handler (filename, Qadd_name_to_file);
|
|
|
2009 if (!NILP (handler))
|
|
|
2010 RETURN_UNGCPRO (call4 (handler, Qadd_name_to_file, filename,
|
|
|
2011 newname, ok_if_already_exists));
|
|
|
2012
|
|
|
2013 /* If the new name has special constructs in it,
|
|
|
2014 call the corresponding file handler. */
|
|
|
2015 handler = Ffind_file_name_handler (newname, Qadd_name_to_file);
|
|
|
2016 if (!NILP (handler))
|
|
|
2017 RETURN_UNGCPRO (call4 (handler, Qadd_name_to_file, filename,
|
|
|
2018 newname, ok_if_already_exists));
|
|
|
2019
|
|
|
2020 if (NILP (ok_if_already_exists)
|
|
|
2021 || INTP (ok_if_already_exists))
|
|
|
2022 barf_or_query_if_file_exists (newname, "make it a new name",
|
|
|
2023 INTP (ok_if_already_exists), 0);
|
|
211
|
2024 /* Syncing with FSF 19.34.6 note: FSF does not report a file error
|
|
|
2025 on NT here. --marcpa */
|
|
213
|
2026 /* But FSF #defines link as sys_link which is supplied in nt.c. We can't do
|
|
|
2027 that because sysfile.h defines sys_link depending on ENCAPSULATE_LINK.
|
|
|
2028 Reverted to previous behaviour pending a working fix. (jhar) */
|
|
|
2029 #if defined(WINDOWSNT)
|
|
0
|
2030 /* Windows does not support this operation. */
|
|
|
2031 report_file_error ("Adding new name", Flist (2, &filename));
|
|
213
|
2032 #else /* not defined(WINDOWSNT) */
|
|
0
|
2033
|
|
16
|
2034 unlink ((char *) XSTRING_DATA (newname));
|
|
|
2035 if (0 > link ((char *) XSTRING_DATA (filename),
|
|
|
2036 (char *) XSTRING_DATA (newname)))
|
|
0
|
2037 {
|
|
|
2038 report_file_error ("Adding new name",
|
|
|
2039 list2 (filename, newname));
|
|
|
2040 }
|
|
213
|
2041 #endif /* defined(WINDOWSNT) */
|
|
0
|
2042
|
|
|
2043 UNGCPRO;
|
|
|
2044 return Qnil;
|
|
|
2045 }
|
|
|
2046
|
|
|
2047 #ifdef S_IFLNK
|
|
20
|
2048 DEFUN ("make-symbolic-link", Fmake_symbolic_link, 2, 3,
|
|
|
2049 "FMake symbolic link to file: \nFMake symbolic link to file %s: \np", /*
|
|
0
|
2050 Make a symbolic link to FILENAME, named LINKNAME. Both args strings.
|
|
|
2051 Signals a `file-already-exists' error if a file LINKNAME already exists
|
|
|
2052 unless optional third argument OK-IF-ALREADY-EXISTS is non-nil.
|
|
|
2053 A number as third arg means request confirmation if LINKNAME already exists.
|
|
|
2054 This happens for interactive use with M-x.
|
|
20
|
2055 */
|
|
|
2056 (filename, linkname, ok_if_already_exists))
|
|
0
|
2057 {
|
|
120
|
2058 /* This function can GC. GC checked 1997.06.04. */
|
|
0
|
2059 Lisp_Object handler;
|
|
|
2060 struct gcpro gcpro1, gcpro2;
|
|
|
2061
|
|
|
2062 GCPRO2 (filename, linkname);
|
|
|
2063 CHECK_STRING (filename);
|
|
|
2064 CHECK_STRING (linkname);
|
|
|
2065 /* If the link target has a ~, we must expand it to get
|
|
|
2066 a truly valid file name. Otherwise, do not expand;
|
|
|
2067 we want to permit links to relative file names. */
|
|
211
|
2068 if (XSTRING_BYTE (filename, 0) == '~')
|
|
0
|
2069 filename = Fexpand_file_name (filename, Qnil);
|
|
|
2070 linkname = Fexpand_file_name (linkname, Qnil);
|
|
|
2071
|
|
|
2072 /* If the file name has special constructs in it,
|
|
|
2073 call the corresponding file handler. */
|
|
|
2074 handler = Ffind_file_name_handler (filename, Qmake_symbolic_link);
|
|
|
2075 if (!NILP (handler))
|
|
|
2076 RETURN_UNGCPRO (call4 (handler, Qmake_symbolic_link, filename, linkname,
|
|
|
2077 ok_if_already_exists));
|
|
|
2078
|
|
|
2079 /* If the new link name has special constructs in it,
|
|
|
2080 call the corresponding file handler. */
|
|
|
2081 handler = Ffind_file_name_handler (linkname, Qmake_symbolic_link);
|
|
|
2082 if (!NILP (handler))
|
|
|
2083 RETURN_UNGCPRO (call4 (handler, Qmake_symbolic_link, filename,
|
|
|
2084 linkname, ok_if_already_exists));
|
|
|
2085
|
|
|
2086 if (NILP (ok_if_already_exists)
|
|
|
2087 || INTP (ok_if_already_exists))
|
|
|
2088 barf_or_query_if_file_exists (linkname, "make it a link",
|
|
|
2089 INTP (ok_if_already_exists), 0);
|
|
|
2090
|
|
16
|
2091 unlink ((char *) XSTRING_DATA (linkname));
|
|
|
2092 if (0 > symlink ((char *) XSTRING_DATA (filename),
|
|
|
2093 (char *) XSTRING_DATA (linkname)))
|
|
0
|
2094 {
|
|
|
2095 report_file_error ("Making symbolic link",
|
|
|
2096 list2 (filename, linkname));
|
|
|
2097 }
|
|
|
2098 UNGCPRO;
|
|
|
2099 return Qnil;
|
|
|
2100 }
|
|
|
2101 #endif /* S_IFLNK */
|
|
|
2102
|
|
|
2103 #ifdef HPUX_NET
|
|
|
2104
|
|
20
|
2105 DEFUN ("sysnetunam", Fsysnetunam, 2, 2, 0, /*
|
|
0
|
2106 Open a network connection to PATH using LOGIN as the login string.
|
|
20
|
2107 */
|
|
|
2108 (path, login))
|
|
0
|
2109 {
|
|
|
2110 int netresult;
|
|
151
|
2111
|
|
0
|
2112 CHECK_STRING (path);
|
|
151
|
2113 CHECK_STRING (login);
|
|
0
|
2114
|
|
|
2115 /* netunam, being a strange-o system call only used once, is not
|
|
|
2116 encapsulated. */
|
|
|
2117 {
|
|
|
2118 char *path_ext;
|
|
|
2119 char *login_ext;
|
|
|
2120
|
|
|
2121 GET_C_STRING_FILENAME_DATA_ALLOCA (path, path_ext);
|
|
|
2122 GET_C_STRING_EXT_DATA_ALLOCA (login, FORMAT_OS, login_ext);
|
|
151
|
2123
|
|
0
|
2124 netresult = netunam (path_ext, login_ext);
|
|
|
2125 }
|
|
|
2126
|
|
|
2127 if (netresult == -1)
|
|
|
2128 return Qnil;
|
|
|
2129 else
|
|
|
2130 return Qt;
|
|
|
2131 }
|
|
|
2132 #endif /* HPUX_NET */
|
|
|
2133
|
|
20
|
2134 DEFUN ("file-name-absolute-p", Ffile_name_absolute_p, 1, 1, 0, /*
|
|
0
|
2135 Return t if file FILENAME specifies an absolute path name.
|
|
|
2136 On Unix, this is a name starting with a `/' or a `~'.
|
|
20
|
2137 */
|
|
|
2138 (filename))
|
|
0
|
2139 {
|
|
116
|
2140 /* This function does not GC */
|
|
0
|
2141 Bufbyte *ptr;
|
|
|
2142
|
|
|
2143 CHECK_STRING (filename);
|
|
16
|
2144 ptr = XSTRING_DATA (filename);
|
|
272
|
2145 return (IS_DIRECTORY_SEP (*ptr) || *ptr == '~'
|
|
265
|
2146 #ifdef WINDOWSNT
|
|
272
|
2147 || (IS_DRIVE (*ptr) && ptr[1] == ':' && IS_DIRECTORY_SEP (ptr[2]))
|
|
0
|
2148 #endif
|
|
272
|
2149 ) ? Qt : Qnil;
|
|
0
|
2150 }
|
|
|
2151
|
|
|
2152 /* Return nonzero if file FILENAME exists and can be executed. */
|
|
|
2153
|
|
|
2154 static int
|
|
|
2155 check_executable (char *filename)
|
|
|
2156 {
|
|
265
|
2157 #ifdef WINDOWSNT
|
|
0
|
2158 struct stat st;
|
|
|
2159 if (stat (filename, &st) < 0)
|
|
|
2160 return 0;
|
|
211
|
2161 return ((st.st_mode & S_IEXEC) != 0);
|
|
265
|
2162 #else /* not WINDOWSNT */
|
|
0
|
2163 #ifdef HAVE_EACCESS
|
|
183
|
2164 return eaccess (filename, 1) >= 0;
|
|
0
|
2165 #else
|
|
|
2166 /* Access isn't quite right because it uses the real uid
|
|
|
2167 and we really want to test with the effective uid.
|
|
|
2168 But Unix doesn't give us a right way to do it. */
|
|
183
|
2169 return access (filename, 1) >= 0;
|
|
|
2170 #endif /* HAVE_EACCESS */
|
|
265
|
2171 #endif /* not WINDOWSNT */
|
|
0
|
2172 }
|
|
|
2173
|
|
|
2174 /* Return nonzero if file FILENAME exists and can be written. */
|
|
|
2175
|
|
|
2176 static int
|
|
|
2177 check_writable (CONST char *filename)
|
|
|
2178 {
|
|
|
2179 #ifdef HAVE_EACCESS
|
|
|
2180 return (eaccess (filename, 2) >= 0);
|
|
|
2181 #else
|
|
|
2182 /* Access isn't quite right because it uses the real uid
|
|
|
2183 and we really want to test with the effective uid.
|
|
|
2184 But Unix doesn't give us a right way to do it.
|
|
|
2185 Opening with O_WRONLY could work for an ordinary file,
|
|
|
2186 but would lose for directories. */
|
|
|
2187 return (access (filename, 2) >= 0);
|
|
|
2188 #endif
|
|
|
2189 }
|
|
|
2190
|
|
20
|
2191 DEFUN ("file-exists-p", Ffile_exists_p, 1, 1, 0, /*
|
|
0
|
2192 Return t if file FILENAME exists. (This does not mean you can read it.)
|
|
|
2193 See also `file-readable-p' and `file-attributes'.
|
|
20
|
2194 */
|
|
|
2195 (filename))
|
|
0
|
2196 {
|
|
116
|
2197 /* This function can call lisp */
|
|
0
|
2198 Lisp_Object abspath;
|
|
|
2199 Lisp_Object handler;
|
|
|
2200 struct stat statbuf;
|
|
|
2201 struct gcpro gcpro1;
|
|
151
|
2202
|
|
0
|
2203 CHECK_STRING (filename);
|
|
|
2204 abspath = Fexpand_file_name (filename, Qnil);
|
|
|
2205
|
|
|
2206 /* If the file name has special constructs in it,
|
|
|
2207 call the corresponding file handler. */
|
|
|
2208 GCPRO1 (abspath);
|
|
|
2209 handler = Ffind_file_name_handler (abspath, Qfile_exists_p);
|
|
|
2210 UNGCPRO;
|
|
|
2211 if (!NILP (handler))
|
|
|
2212 return call2 (handler, Qfile_exists_p, abspath);
|
|
|
2213
|
|
272
|
2214 return stat ((char *) XSTRING_DATA (abspath), &statbuf) >= 0 ? Qt : Qnil;
|
|
0
|
2215 }
|
|
|
2216
|
|
20
|
2217 DEFUN ("file-executable-p", Ffile_executable_p, 1, 1, 0, /*
|
|
0
|
2218 Return t if FILENAME can be executed by you.
|
|
|
2219 For a directory, this means you can access files in that directory.
|
|
20
|
2220 */
|
|
|
2221 (filename))
|
|
70
|
2222
|
|
0
|
2223 {
|
|
124
|
2224 /* This function can GC. GC checked 1997.04.10. */
|
|
0
|
2225 Lisp_Object abspath;
|
|
|
2226 Lisp_Object handler;
|
|
|
2227 struct gcpro gcpro1;
|
|
151
|
2228
|
|
0
|
2229 CHECK_STRING (filename);
|
|
|
2230 abspath = Fexpand_file_name (filename, Qnil);
|
|
|
2231
|
|
|
2232 /* If the file name has special constructs in it,
|
|
|
2233 call the corresponding file handler. */
|
|
|
2234 GCPRO1 (abspath);
|
|
|
2235 handler = Ffind_file_name_handler (abspath, Qfile_executable_p);
|
|
|
2236 UNGCPRO;
|
|
|
2237 if (!NILP (handler))
|
|
|
2238 return call2 (handler, Qfile_executable_p, abspath);
|
|
|
2239
|
|
272
|
2240 return check_executable ((char *) XSTRING_DATA (abspath)) ? Qt : Qnil;
|
|
0
|
2241 }
|
|
|
2242
|
|
20
|
2243 DEFUN ("file-readable-p", Ffile_readable_p, 1, 1, 0, /*
|
|
0
|
2244 Return t if file FILENAME exists and you can read it.
|
|
|
2245 See also `file-exists-p' and `file-attributes'.
|
|
20
|
2246 */
|
|
|
2247 (filename))
|
|
0
|
2248 {
|
|
225
|
2249 /* This function can GC */
|
|
|
2250 Lisp_Object abspath = Qnil;
|
|
0
|
2251 Lisp_Object handler;
|
|
|
2252 struct gcpro gcpro1;
|
|
225
|
2253 GCPRO1 (abspath);
|
|
151
|
2254
|
|
0
|
2255 CHECK_STRING (filename);
|
|
|
2256 abspath = Fexpand_file_name (filename, Qnil);
|
|
|
2257
|
|
|
2258 /* If the file name has special constructs in it,
|
|
|
2259 call the corresponding file handler. */
|
|
|
2260 handler = Ffind_file_name_handler (abspath, Qfile_readable_p);
|
|
|
2261 if (!NILP (handler))
|
|
225
|
2262 RETURN_UNGCPRO (call2 (handler, Qfile_readable_p, abspath));
|
|
0
|
2263
|
|
265
|
2264 #ifdef WINDOWSNT
|
|
211
|
2265 /* Under MS-DOS and Windows, open does not work for directories. */
|
|
267
|
2266 UNGCPRO;
|
|
211
|
2267 if (access (XSTRING_DATA (abspath), 0) == 0)
|
|
|
2268 return Qt;
|
|
267
|
2269 else
|
|
|
2270 return Qnil;
|
|
265
|
2271 #else /* not WINDOWSNT */
|
|
|
2272 {
|
|
|
2273 int desc = interruptible_open ((char *) XSTRING_DATA (abspath), O_RDONLY | OPEN_BINARY, 0);
|
|
|
2274 UNGCPRO;
|
|
|
2275 if (desc < 0)
|
|
|
2276 return Qnil;
|
|
|
2277 close (desc);
|
|
|
2278 return Qt;
|
|
|
2279 }
|
|
|
2280 #endif /* not WINDOWSNT */
|
|
0
|
2281 }
|
|
|
2282
|
|
|
2283 /* Having this before file-symlink-p mysteriously caused it to be forgotten
|
|
|
2284 on the RT/PC. */
|
|
20
|
2285 DEFUN ("file-writable-p", Ffile_writable_p, 1, 1, 0, /*
|
|
0
|
2286 Return t if file FILENAME can be written or created by you.
|
|
20
|
2287 */
|
|
|
2288 (filename))
|
|
0
|
2289 {
|
|
124
|
2290 /* This function can GC. GC checked 1997.04.10. */
|
|
0
|
2291 Lisp_Object abspath, dir;
|
|
|
2292 Lisp_Object handler;
|
|
|
2293 struct stat statbuf;
|
|
|
2294 struct gcpro gcpro1;
|
|
151
|
2295
|
|
0
|
2296 CHECK_STRING (filename);
|
|
|
2297 abspath = Fexpand_file_name (filename, Qnil);
|
|
|
2298
|
|
|
2299 /* If the file name has special constructs in it,
|
|
|
2300 call the corresponding file handler. */
|
|
|
2301 GCPRO1 (abspath);
|
|
|
2302 handler = Ffind_file_name_handler (abspath, Qfile_writable_p);
|
|
|
2303 UNGCPRO;
|
|
|
2304 if (!NILP (handler))
|
|
|
2305 return call2 (handler, Qfile_writable_p, abspath);
|
|
|
2306
|
|
16
|
2307 if (stat ((char *) XSTRING_DATA (abspath), &statbuf) >= 0)
|
|
|
2308 return (check_writable ((char *) XSTRING_DATA (abspath))
|
|
0
|
2309 ? Qt : Qnil);
|
|
|
2310
|
|
|
2311
|
|
114
|
2312 GCPRO1 (abspath);
|
|
0
|
2313 dir = Ffile_name_directory (abspath);
|
|
114
|
2314 UNGCPRO;
|
|
16
|
2315 return (check_writable (!NILP (dir) ? (char *) XSTRING_DATA (dir)
|
|
0
|
2316 : "")
|
|
|
2317 ? Qt : Qnil);
|
|
|
2318 }
|
|
|
2319
|
|
20
|
2320 DEFUN ("file-symlink-p", Ffile_symlink_p, 1, 1, 0, /*
|
|
0
|
2321 Return non-nil if file FILENAME is the name of a symbolic link.
|
|
|
2322 The value is the name of the file to which it is linked.
|
|
|
2323 Otherwise returns nil.
|
|
20
|
2324 */
|
|
|
2325 (filename))
|
|
0
|
2326 {
|
|
124
|
2327 /* This function can GC. GC checked 1997.04.10. */
|
|
0
|
2328 #ifdef S_IFLNK
|
|
|
2329 char *buf;
|
|
|
2330 int bufsize;
|
|
|
2331 int valsize;
|
|
|
2332 Lisp_Object val;
|
|
|
2333 Lisp_Object handler;
|
|
|
2334 struct gcpro gcpro1;
|
|
151
|
2335
|
|
0
|
2336 CHECK_STRING (filename);
|
|
|
2337 filename = Fexpand_file_name (filename, Qnil);
|
|
|
2338
|
|
|
2339 /* If the file name has special constructs in it,
|
|
|
2340 call the corresponding file handler. */
|
|
116
|
2341 GCPRO1 (filename);
|
|
0
|
2342 handler = Ffind_file_name_handler (filename, Qfile_symlink_p);
|
|
116
|
2343 UNGCPRO;
|
|
0
|
2344 if (!NILP (handler))
|
|
|
2345 return call2 (handler, Qfile_symlink_p, filename);
|
|
|
2346
|
|
|
2347 bufsize = 100;
|
|
|
2348 while (1)
|
|
|
2349 {
|
|
185
|
2350 buf = xnew_array_and_zero (char, bufsize);
|
|
16
|
2351 valsize = readlink ((char *) XSTRING_DATA (filename),
|
|
0
|
2352 buf, bufsize);
|
|
|
2353 if (valsize < bufsize) break;
|
|
|
2354 /* Buffer was not long enough */
|
|
|
2355 xfree (buf);
|
|
|
2356 bufsize *= 2;
|
|
|
2357 }
|
|
|
2358 if (valsize == -1)
|
|
|
2359 {
|
|
|
2360 xfree (buf);
|
|
|
2361 return Qnil;
|
|
|
2362 }
|
|
|
2363 val = make_string ((Bufbyte *) buf, valsize);
|
|
|
2364 xfree (buf);
|
|
|
2365 return val;
|
|
|
2366 #else /* not S_IFLNK */
|
|
|
2367 return Qnil;
|
|
|
2368 #endif /* not S_IFLNK */
|
|
|
2369 }
|
|
|
2370
|
|
20
|
2371 DEFUN ("file-directory-p", Ffile_directory_p, 1, 1, 0, /*
|
|
0
|
2372 Return t if file FILENAME is the name of a directory as a file.
|
|
|
2373 A directory name spec may be given instead; then the value is t
|
|
|
2374 if the directory so specified exists and really is a directory.
|
|
20
|
2375 */
|
|
|
2376 (filename))
|
|
0
|
2377 {
|
|
124
|
2378 /* This function can GC. GC checked 1997.04.10. */
|
|
0
|
2379 Lisp_Object abspath;
|
|
|
2380 struct stat st;
|
|
|
2381 Lisp_Object handler;
|
|
|
2382 struct gcpro gcpro1;
|
|
151
|
2383
|
|
114
|
2384 GCPRO1 (current_buffer->directory);
|
|
0
|
2385 abspath = expand_and_dir_to_file (filename,
|
|
|
2386 current_buffer->directory);
|
|
|
2387 UNGCPRO;
|
|
|
2388
|
|
|
2389 /* If the file name has special constructs in it,
|
|
|
2390 call the corresponding file handler. */
|
|
|
2391 GCPRO1 (abspath);
|
|
|
2392 handler = Ffind_file_name_handler (abspath, Qfile_directory_p);
|
|
|
2393 UNGCPRO;
|
|
|
2394 if (!NILP (handler))
|
|
|
2395 return call2 (handler, Qfile_directory_p, abspath);
|
|
|
2396
|
|
16
|
2397 if (stat ((char *) XSTRING_DATA (abspath), &st) < 0)
|
|
0
|
2398 return Qnil;
|
|
|
2399 return (st.st_mode & S_IFMT) == S_IFDIR ? Qt : Qnil;
|
|
|
2400 }
|
|
|
2401
|
|
20
|
2402 DEFUN ("file-accessible-directory-p", Ffile_accessible_directory_p, 1, 1, 0, /*
|
|
0
|
2403 Return t if file FILENAME is the name of a directory as a file,
|
|
|
2404 and files in that directory can be opened by you. In order to use a
|
|
|
2405 directory as a buffer's current directory, this predicate must return true.
|
|
|
2406 A directory name spec may be given instead; then the value is t
|
|
|
2407 if the directory so specified exists and really is a readable and
|
|
|
2408 searchable directory.
|
|
20
|
2409 */
|
|
|
2410 (filename))
|
|
0
|
2411 {
|
|
124
|
2412 /* This function can GC. GC checked 1997.04.10. */
|
|
0
|
2413 Lisp_Object handler;
|
|
|
2414
|
|
|
2415 /* If the file name has special constructs in it,
|
|
|
2416 call the corresponding file handler. */
|
|
|
2417 handler = Ffind_file_name_handler (filename, Qfile_accessible_directory_p);
|
|
|
2418 if (!NILP (handler))
|
|
|
2419 return call2 (handler, Qfile_accessible_directory_p,
|
|
|
2420 filename);
|
|
|
2421
|
|
265
|
2422 #if !defined(WINDOWSNT)
|
|
0
|
2423 if (NILP (Ffile_directory_p (filename)))
|
|
|
2424 return (Qnil);
|
|
116
|
2425 else
|
|
|
2426 return Ffile_executable_p (filename);
|
|
211
|
2427 #else
|
|
|
2428 {
|
|
|
2429 int tem;
|
|
|
2430 struct gcpro gcpro1;
|
|
|
2431 /* It's an unlikely combination, but yes we really do need to gcpro:
|
|
|
2432 Suppose that file-accessible-directory-p has no handler, but
|
|
|
2433 file-directory-p does have a handler; this handler causes a GC which
|
|
|
2434 relocates the string in `filename'; and finally file-directory-p
|
|
|
2435 returns non-nil. Then we would end up passing a garbaged string
|
|
|
2436 to file-executable-p. */
|
|
|
2437 GCPRO1 (filename);
|
|
|
2438 tem = (NILP (Ffile_directory_p (filename))
|
|
|
2439 || NILP (Ffile_executable_p (filename)));
|
|
|
2440 UNGCPRO;
|
|
|
2441 return tem ? Qnil : Qt;
|
|
|
2442 }
|
|
265
|
2443 #endif /* !defined(WINDOWSNT) */
|
|
0
|
2444 }
|
|
|
2445
|
|
20
|
2446 DEFUN ("file-regular-p", Ffile_regular_p, 1, 1, 0, /*
|
|
0
|
2447 "Return t if file FILENAME is the name of a regular file.
|
|
|
2448 This is the sort of file that holds an ordinary stream of data bytes.
|
|
20
|
2449 */
|
|
|
2450 (filename))
|
|
0
|
2451 {
|
|
124
|
2452 /* This function can GC. GC checked 1997.04.10. */
|
|
114
|
2453 Lisp_Object abspath;
|
|
0
|
2454 struct stat st;
|
|
|
2455 Lisp_Object handler;
|
|
114
|
2456 struct gcpro gcpro1;
|
|
|
2457
|
|
|
2458 GCPRO1 (current_buffer->directory);
|
|
0
|
2459 abspath = expand_and_dir_to_file (filename, current_buffer->directory);
|
|
114
|
2460 UNGCPRO;
|
|
0
|
2461
|
|
|
2462 /* If the file name has special constructs in it,
|
|
|
2463 call the corresponding file handler. */
|
|
114
|
2464 GCPRO1 (abspath);
|
|
0
|
2465 handler = Ffind_file_name_handler (abspath, Qfile_regular_p);
|
|
114
|
2466 UNGCPRO;
|
|
0
|
2467 if (!NILP (handler))
|
|
|
2468 return call2 (handler, Qfile_regular_p, abspath);
|
|
|
2469
|
|
16
|
2470 if (stat ((char *) XSTRING_DATA (abspath), &st) < 0)
|
|
0
|
2471 return Qnil;
|
|
|
2472 return (st.st_mode & S_IFMT) == S_IFREG ? Qt : Qnil;
|
|
|
2473 }
|
|
|
2474
|
|
20
|
2475 DEFUN ("file-modes", Ffile_modes, 1, 1, 0, /*
|
|
0
|
2476 Return mode bits of FILE, as an integer.
|
|
20
|
2477 */
|
|
|
2478 (filename))
|
|
0
|
2479 {
|
|
124
|
2480 /* This function can GC. GC checked 1997.04.10. */
|
|
0
|
2481 Lisp_Object abspath;
|
|
|
2482 struct stat st;
|
|
|
2483 Lisp_Object handler;
|
|
|
2484 struct gcpro gcpro1;
|
|
151
|
2485
|
|
114
|
2486 GCPRO1 (current_buffer->directory);
|
|
0
|
2487 abspath = expand_and_dir_to_file (filename,
|
|
|
2488 current_buffer->directory);
|
|
|
2489 UNGCPRO;
|
|
|
2490
|
|
|
2491 /* If the file name has special constructs in it,
|
|
|
2492 call the corresponding file handler. */
|
|
|
2493 GCPRO1 (abspath);
|
|
|
2494 handler = Ffind_file_name_handler (abspath, Qfile_modes);
|
|
|
2495 UNGCPRO;
|
|
|
2496 if (!NILP (handler))
|
|
|
2497 return call2 (handler, Qfile_modes, abspath);
|
|
|
2498
|
|
16
|
2499 if (stat ((char *) XSTRING_DATA (abspath), &st) < 0)
|
|
0
|
2500 return Qnil;
|
|
211
|
2501 /* Syncing with FSF 19.34.6 note: not in FSF, #if 0'ed out here. */
|
|
|
2502 #if 0
|
|
0
|
2503 #ifdef DOS_NT
|
|
100
|
2504 if (check_executable (XSTRING (abspath)->_data))
|
|
0
|
2505 st.st_mode |= S_IEXEC;
|
|
|
2506 #endif /* DOS_NT */
|
|
211
|
2507 #endif /* 0 */
|
|
0
|
2508
|
|
|
2509 return make_int (st.st_mode & 07777);
|
|
|
2510 }
|
|
|
2511
|
|
20
|
2512 DEFUN ("set-file-modes", Fset_file_modes, 2, 2, 0, /*
|
|
0
|
2513 Set mode bits of FILE to MODE (an integer).
|
|
|
2514 Only the 12 low bits of MODE are used.
|
|
20
|
2515 */
|
|
|
2516 (filename, mode))
|
|
0
|
2517 {
|
|
124
|
2518 /* This function can GC. GC checked 1997.04.10. */
|
|
0
|
2519 Lisp_Object abspath;
|
|
|
2520 Lisp_Object handler;
|
|
114
|
2521 struct gcpro gcpro1;
|
|
151
|
2522
|
|
114
|
2523 GCPRO1 (current_buffer->directory);
|
|
0
|
2524 abspath = Fexpand_file_name (filename, current_buffer->directory);
|
|
116
|
2525 UNGCPRO;
|
|
|
2526
|
|
70
|
2527 CHECK_INT (mode);
|
|
44
|
2528
|
|
0
|
2529 /* If the file name has special constructs in it,
|
|
|
2530 call the corresponding file handler. */
|
|
|
2531 GCPRO1 (abspath);
|
|
|
2532 handler = Ffind_file_name_handler (abspath, Qset_file_modes);
|
|
|
2533 UNGCPRO;
|
|
|
2534 if (!NILP (handler))
|
|
|
2535 return call3 (handler, Qset_file_modes, abspath, mode);
|
|
|
2536
|
|
16
|
2537 if (chmod ((char *) XSTRING_DATA (abspath), XINT (mode)) < 0)
|
|
227
|
2538 report_file_error ("Doing chmod", list1 (abspath));
|
|
0
|
2539
|
|
|
2540 return Qnil;
|
|
|
2541 }
|
|
|
2542
|
|
20
|
2543 DEFUN ("set-default-file-modes", Fset_default_file_modes, 1, 1, 0, /*
|
|
0
|
2544 Set the file permission bits for newly created files.
|
|
|
2545 MASK should be an integer; if a permission's bit in MASK is 1,
|
|
|
2546 subsequently created files will not have that permission enabled.
|
|
|
2547 Only the low 9 bits are used.
|
|
|
2548 This setting is inherited by subprocesses.
|
|
20
|
2549 */
|
|
|
2550 (mode))
|
|
0
|
2551 {
|
|
|
2552 CHECK_INT (mode);
|
|
151
|
2553
|
|
0
|
2554 umask ((~ XINT (mode)) & 0777);
|
|
|
2555
|
|
|
2556 return Qnil;
|
|
|
2557 }
|
|
|
2558
|
|
20
|
2559 DEFUN ("default-file-modes", Fdefault_file_modes, 0, 0, 0, /*
|
|
0
|
2560 Return the default file protection for created files.
|
|
|
2561 The umask value determines which permissions are enabled in newly
|
|
|
2562 created files. If a permission's bit in the umask is 1, subsequently
|
|
|
2563 created files will not have that permission enabled.
|
|
20
|
2564 */
|
|
|
2565 ())
|
|
0
|
2566 {
|
|
|
2567 int mode;
|
|
|
2568
|
|
|
2569 mode = umask (0);
|
|
|
2570 umask (mode);
|
|
|
2571
|
|
|
2572 return make_int ((~ mode) & 0777);
|
|
|
2573 }
|
|
|
2574
|
|
20
|
2575 DEFUN ("unix-sync", Funix_sync, 0, 0, "", /*
|
|
0
|
2576 Tell Unix to finish all pending disk updates.
|
|
20
|
2577 */
|
|
|
2578 ())
|
|
0
|
2579 {
|
|
100
|
2580 #ifndef WINDOWSNT
|
|
0
|
2581 sync ();
|
|
100
|
2582 #endif
|
|
0
|
2583 return Qnil;
|
|
|
2584 }
|
|
|
2585
|
|
|
2586
|
|
20
|
2587 DEFUN ("file-newer-than-file-p", Ffile_newer_than_file_p, 2, 2, 0, /*
|
|
0
|
2588 Return t if file FILE1 is newer than file FILE2.
|
|
|
2589 If FILE1 does not exist, the answer is nil;
|
|
|
2590 otherwise, if FILE2 does not exist, the answer is t.
|
|
20
|
2591 */
|
|
|
2592 (file1, file2))
|
|
0
|
2593 {
|
|
124
|
2594 /* This function can GC. GC checked 1997.04.10. */
|
|
0
|
2595 Lisp_Object abspath1, abspath2;
|
|
|
2596 struct stat st;
|
|
|
2597 int mtime1;
|
|
|
2598 Lisp_Object handler;
|
|
114
|
2599 struct gcpro gcpro1, gcpro2, gcpro3;
|
|
0
|
2600
|
|
|
2601 CHECK_STRING (file1);
|
|
|
2602 CHECK_STRING (file2);
|
|
|
2603
|
|
|
2604 abspath1 = Qnil;
|
|
114
|
2605 abspath2 = Qnil;
|
|
|
2606
|
|
|
2607 GCPRO3 (abspath1, abspath2, current_buffer->directory);
|
|
|
2608 abspath1 = expand_and_dir_to_file (file1, current_buffer->directory);
|
|
|
2609 abspath2 = expand_and_dir_to_file (file2, current_buffer->directory);
|
|
0
|
2610
|
|
|
2611 /* If the file name has special constructs in it,
|
|
|
2612 call the corresponding file handler. */
|
|
|
2613 handler = Ffind_file_name_handler (abspath1, Qfile_newer_than_file_p);
|
|
|
2614 if (NILP (handler))
|
|
|
2615 handler = Ffind_file_name_handler (abspath2, Qfile_newer_than_file_p);
|
|
|
2616 UNGCPRO;
|
|
|
2617 if (!NILP (handler))
|
|
|
2618 return call3 (handler, Qfile_newer_than_file_p, abspath1,
|
|
|
2619 abspath2);
|
|
|
2620
|
|
16
|
2621 if (stat ((char *) XSTRING_DATA (abspath1), &st) < 0)
|
|
0
|
2622 return Qnil;
|
|
|
2623
|
|
|
2624 mtime1 = st.st_mtime;
|
|
|
2625
|
|
16
|
2626 if (stat ((char *) XSTRING_DATA (abspath2), &st) < 0)
|
|
0
|
2627 return Qt;
|
|
|
2628
|
|
|
2629 return (mtime1 > st.st_mtime) ? Qt : Qnil;
|
|
|
2630 }
|
|
|
2631
|
|
|
2632
|
|
2
|
2633 /* Stack sizes > 2**16 is a good way to elicit compiler bugs */
|
|
|
2634 /* #define READ_BUF_SIZE (2 << 16) */
|
|
|
2635 #define READ_BUF_SIZE (1 << 15)
|
|
0
|
2636
|
|
274
|
2637 DEFUN ("insert-file-contents-internal", Finsert_file_contents_internal, 1, 7, 0, /*
|
|
70
|
2638 Insert contents of file FILENAME after point; no coding-system frobbing.
|
|
|
2639 This function is identical to `insert-file-contents' except for the
|
|
|
2640 handling of the CODESYS and USED-CODESYS arguments under
|
|
|
2641 XEmacs/Mule. (When Mule support is not present, both functions are
|
|
|
2642 identical and ignore the CODESYS and USED-CODESYS arguments.)
|
|
|
2643
|
|
|
2644 If support for Mule exists in this Emacs, the file is decoded according
|
|
|
2645 to CODESYS; if omitted, no conversion happens. If USED-CODESYS is non-nil,
|
|
|
2646 it should be a symbol, and the actual coding system that was used for the
|
|
|
2647 decoding is stored into it. It will in general be different from CODESYS
|
|
|
2648 if CODESYS specifies automatic encoding detection or end-of-line detection.
|
|
|
2649
|
|
|
2650 Currently BEG and END refer to byte positions (as opposed to character
|
|
|
2651 positions), even in Mule. (Fixing this is very difficult.)
|
|
20
|
2652 */
|
|
274
|
2653 (filename, visit, beg, end, replace, codesys, used_codesys))
|
|
0
|
2654 {
|
|
116
|
2655 /* This function can call lisp */
|
|
|
2656 /* #### dmoore - this function hasn't been checked for gc recently */
|
|
0
|
2657 struct stat st;
|
|
|
2658 int fd;
|
|
|
2659 int saverrno = 0;
|
|
|
2660 Charcount inserted = 0;
|
|
|
2661 int speccount;
|
|
114
|
2662 struct gcpro gcpro1, gcpro2, gcpro3, gcpro4, gcpro5;
|
|
0
|
2663 Lisp_Object handler = Qnil, val;
|
|
|
2664 int total;
|
|
|
2665 Bufbyte read_buf[READ_BUF_SIZE];
|
|
|
2666 int mc_count;
|
|
|
2667 struct buffer *buf = current_buffer;
|
|
114
|
2668 Lisp_Object curbuf;
|
|
0
|
2669 int not_regular = 0;
|
|
|
2670
|
|
|
2671 if (buf->base_buffer && ! NILP (visit))
|
|
|
2672 error ("Cannot do file visiting in an indirect buffer");
|
|
|
2673
|
|
|
2674 /* No need to call Fbarf_if_buffer_read_only() here.
|
|
|
2675 That's called in begin_multiple_change() or wherever. */
|
|
|
2676
|
|
|
2677 val = Qnil;
|
|
|
2678
|
|
114
|
2679 /* #### dmoore - should probably check in various places to see if
|
|
|
2680 curbuf was killed and if so signal an error? */
|
|
|
2681
|
|
|
2682 XSETBUFFER (curbuf, buf);
|
|
|
2683
|
|
|
2684 GCPRO5 (filename, val, visit, handler, curbuf);
|
|
151
|
2685
|
|
0
|
2686 mc_count = (NILP (replace)) ?
|
|
|
2687 begin_multiple_change (buf, BUF_PT (buf), BUF_PT (buf)) :
|
|
|
2688 begin_multiple_change (buf, BUF_BEG (buf), BUF_Z (buf));
|
|
|
2689
|
|
|
2690 speccount = specpdl_depth (); /* begin_multiple_change also adds
|
|
|
2691 an unwind_protect */
|
|
|
2692
|
|
|
2693 filename = Fexpand_file_name (filename, Qnil);
|
|
|
2694
|
|
|
2695 /* If the file name has special constructs in it,
|
|
|
2696 call the corresponding file handler. */
|
|
|
2697 handler = Ffind_file_name_handler (filename, Qinsert_file_contents);
|
|
|
2698 if (!NILP (handler))
|
|
|
2699 {
|
|
74
|
2700 val = call6 (handler, Qinsert_file_contents, filename,
|
|
|
2701 visit, beg, end, replace);
|
|
0
|
2702 goto handled;
|
|
|
2703 }
|
|
|
2704
|
|
259
|
2705 #ifdef FILE_CODING
|
|
70
|
2706 if (!NILP (used_codesys))
|
|
|
2707 CHECK_SYMBOL (used_codesys);
|
|
|
2708 #endif
|
|
|
2709
|
|
0
|
2710 if ( (!NILP (beg) || !NILP (end)) && !NILP (visit) )
|
|
|
2711 error ("Attempt to visit less than an entire file");
|
|
151
|
2712
|
|
0
|
2713 fd = -1;
|
|
|
2714
|
|
225
|
2715 if (
|
|
0
|
2716 #ifndef APOLLO
|
|
225
|
2717 (stat ((char *) XSTRING_DATA (filename), &st) < 0)
|
|
0
|
2718 #else /* APOLLO */
|
|
225
|
2719 /* Don't even bother with interruptible_open. APOLLO sucks. */
|
|
251
|
2720 ((fd = open ((char *) XSTRING_DATA (filename), O_RDONLY | OPEN_BINARY, 0)) < 0
|
|
225
|
2721 || fstat (fd, &st) < 0)
|
|
0
|
2722 #endif /* APOLLO */
|
|
225
|
2723 )
|
|
0
|
2724 {
|
|
|
2725 if (fd >= 0) close (fd);
|
|
|
2726 badopen:
|
|
|
2727 if (NILP (visit))
|
|
227
|
2728 report_file_error ("Opening input file", list1 (filename));
|
|
0
|
2729 st.st_mtime = -1;
|
|
|
2730 goto notfound;
|
|
|
2731 }
|
|
|
2732
|
|
|
2733 #ifdef S_IFREG
|
|
209
|
2734 /* Signal an error if we are accessing a non-regular file, with
|
|
|
2735 REPLACE, BEG or END being non-nil. */
|
|
0
|
2736 if (!S_ISREG (st.st_mode))
|
|
|
2737 {
|
|
173
|
2738 not_regular = 1;
|
|
|
2739
|
|
|
2740 if (!NILP (visit))
|
|
|
2741 goto notfound;
|
|
|
2742
|
|
|
2743 if (!NILP (replace) || !NILP (beg) || !NILP (end))
|
|
0
|
2744 {
|
|
|
2745 end_multiple_change (buf, mc_count);
|
|
|
2746
|
|
|
2747 return Fsignal (Qfile_error,
|
|
|
2748 list2 (build_translated_string("not a regular file"),
|
|
|
2749 filename));
|
|
|
2750 }
|
|
|
2751 }
|
|
183
|
2752 #endif /* S_IFREG */
|
|
0
|
2753
|
|
173
|
2754 if (!NILP (beg))
|
|
|
2755 CHECK_INT (beg);
|
|
|
2756 else
|
|
|
2757 beg = Qzero;
|
|
|
2758
|
|
|
2759 if (!NILP (end))
|
|
|
2760 CHECK_INT (end);
|
|
|
2761
|
|
0
|
2762 if (fd < 0)
|
|
225
|
2763 {
|
|
|
2764 if ((fd = interruptible_open ((char *) XSTRING_DATA (filename),
|
|
251
|
2765 O_RDONLY | OPEN_BINARY, 0)) < 0)
|
|
225
|
2766 goto badopen;
|
|
|
2767 }
|
|
0
|
2768
|
|
|
2769 /* Replacement should preserve point as it preserves markers. */
|
|
|
2770 if (!NILP (replace))
|
|
|
2771 record_unwind_protect (restore_point_unwind, Fpoint_marker (Qnil, Qnil));
|
|
|
2772
|
|
|
2773 record_unwind_protect (close_file_unwind, make_int (fd));
|
|
|
2774
|
|
|
2775 /* Supposedly happens on VMS. */
|
|
|
2776 if (st.st_size < 0)
|
|
|
2777 error ("File size is negative");
|
|
|
2778
|
|
|
2779 if (NILP (end))
|
|
|
2780 {
|
|
173
|
2781 if (!not_regular)
|
|
|
2782 {
|
|
|
2783 end = make_int (st.st_size);
|
|
|
2784 if (XINT (end) != st.st_size)
|
|
|
2785 error ("Maximum buffer size exceeded");
|
|
|
2786 }
|
|
0
|
2787 }
|
|
|
2788
|
|
|
2789 /* If requested, replace the accessible part of the buffer
|
|
|
2790 with the file contents. Avoid replacing text at the
|
|
|
2791 beginning or end of the buffer that matches the file contents;
|
|
|
2792 that preserves markers pointing to the unchanged parts. */
|
|
259
|
2793 #if !defined (FILE_CODING)
|
|
0
|
2794 /* The replace-mode code currently only works when the assumption
|
|
211
|
2795 'one byte == one char' holds true. This fails Mule because
|
|
|
2796 files may contain multibyte characters. It holds under Windows NT
|
|
|
2797 provided we convert CRLF into LF. */
|
|
0
|
2798 # define FSFMACS_SPEEDY_INSERT
|
|
265
|
2799 #endif /* !defined (FILE_CODING) */
|
|
|
2800
|
|
0
|
2801 #ifndef FSFMACS_SPEEDY_INSERT
|
|
|
2802 if (!NILP (replace))
|
|
|
2803 {
|
|
|
2804 buffer_delete_range (buf, BUF_BEG (buf), BUF_Z (buf),
|
|
|
2805 !NILP (visit) ? INSDEL_NO_LOCKING : 0);
|
|
|
2806 }
|
|
|
2807 #else /* FSFMACS_SPEEDY_INSERT */
|
|
|
2808 if (!NILP (replace))
|
|
|
2809 {
|
|
|
2810 char buffer[1 << 14];
|
|
|
2811 Bufpos same_at_start = BUF_BEGV (buf);
|
|
|
2812 Bufpos same_at_end = BUF_ZV (buf);
|
|
|
2813 int overlap;
|
|
|
2814
|
|
|
2815 /* Count how many chars at the start of the file
|
|
|
2816 match the text at the beginning of the buffer. */
|
|
|
2817 while (1)
|
|
|
2818 {
|
|
|
2819 int nread;
|
|
|
2820 Bufpos bufpos;
|
|
|
2821 nread = read_allowing_quit (fd, buffer, sizeof buffer);
|
|
|
2822 if (nread < 0)
|
|
|
2823 error ("IO error reading %s: %s",
|
|
16
|
2824 XSTRING_DATA (filename), strerror (errno));
|
|
0
|
2825 else if (nread == 0)
|
|
|
2826 break;
|
|
|
2827 bufpos = 0;
|
|
|
2828 while (bufpos < nread && same_at_start < BUF_ZV (buf)
|
|
|
2829 && BUF_FETCH_CHAR (buf, same_at_start) == buffer[bufpos])
|
|
|
2830 same_at_start++, bufpos++;
|
|
|
2831 /* If we found a discrepancy, stop the scan.
|
|
211
|
2832 Otherwise loop around and scan the next bufferful. */
|
|
0
|
2833 if (bufpos != nread)
|
|
|
2834 break;
|
|
|
2835 }
|
|
|
2836 /* If the file matches the buffer completely,
|
|
|
2837 there's no need to replace anything. */
|
|
|
2838 if (same_at_start - BUF_BEGV (buf) == st.st_size)
|
|
|
2839 {
|
|
|
2840 close (fd);
|
|
|
2841 unbind_to (speccount, Qnil);
|
|
|
2842 /* Truncate the buffer to the size of the file. */
|
|
|
2843 buffer_delete_range (buf, same_at_start, same_at_end,
|
|
|
2844 !NILP (visit) ? INSDEL_NO_LOCKING : 0);
|
|
|
2845 goto handled;
|
|
|
2846 }
|
|
|
2847 /* Count how many chars at the end of the file
|
|
|
2848 match the text at the end of the buffer. */
|
|
|
2849 while (1)
|
|
|
2850 {
|
|
|
2851 int total_read, nread;
|
|
|
2852 Bufpos bufpos, curpos, trial;
|
|
|
2853
|
|
|
2854 /* At what file position are we now scanning? */
|
|
|
2855 curpos = st.st_size - (BUF_ZV (buf) - same_at_end);
|
|
|
2856 /* If the entire file matches the buffer tail, stop the scan. */
|
|
|
2857 if (curpos == 0)
|
|
|
2858 break;
|
|
|
2859 /* How much can we scan in the next step? */
|
|
272
|
2860 trial = min (curpos, (Bufpos) sizeof (buffer));
|
|
0
|
2861 if (lseek (fd, curpos - trial, 0) < 0)
|
|
227
|
2862 report_file_error ("Setting file position", list1 (filename));
|
|
0
|
2863
|
|
|
2864 total_read = 0;
|
|
|
2865 while (total_read < trial)
|
|
|
2866 {
|
|
|
2867 nread = read_allowing_quit (fd, buffer + total_read,
|
|
|
2868 trial - total_read);
|
|
|
2869 if (nread <= 0)
|
|
227
|
2870 report_file_error ("IO error reading file", list1 (filename));
|
|
0
|
2871 total_read += nread;
|
|
|
2872 }
|
|
211
|
2873 /* Scan this bufferful from the end, comparing with
|
|
0
|
2874 the Emacs buffer. */
|
|
|
2875 bufpos = total_read;
|
|
|
2876 /* Compare with same_at_start to avoid counting some buffer text
|
|
|
2877 as matching both at the file's beginning and at the end. */
|
|
|
2878 while (bufpos > 0 && same_at_end > same_at_start
|
|
|
2879 && BUF_FETCH_CHAR (buf, same_at_end - 1) ==
|
|
|
2880 buffer[bufpos - 1])
|
|
|
2881 same_at_end--, bufpos--;
|
|
|
2882 /* If we found a discrepancy, stop the scan.
|
|
211
|
2883 Otherwise loop around and scan the preceding bufferful. */
|
|
0
|
2884 if (bufpos != 0)
|
|
|
2885 break;
|
|
|
2886 /* If display current starts at beginning of line,
|
|
|
2887 keep it that way. */
|
|
|
2888 if (XBUFFER (XWINDOW (Fselected_window (Qnil))->buffer) == buf)
|
|
|
2889 XWINDOW (Fselected_window (Qnil))->start_at_line_beg =
|
|
|
2890 !NILP (Fbolp (make_buffer (buf)));
|
|
|
2891 }
|
|
|
2892
|
|
|
2893 /* Don't try to reuse the same piece of text twice. */
|
|
|
2894 overlap = same_at_start - BUF_BEGV (buf) -
|
|
|
2895 (same_at_end + st.st_size - BUF_ZV (buf));
|
|
|
2896 if (overlap > 0)
|
|
|
2897 same_at_end += overlap;
|
|
|
2898
|
|
|
2899 /* Arrange to read only the nonmatching middle part of the file. */
|
|
|
2900 beg = make_int (same_at_start - BUF_BEGV (buf));
|
|
|
2901 end = make_int (st.st_size - (BUF_ZV (buf) - same_at_end));
|
|
|
2902
|
|
|
2903 buffer_delete_range (buf, same_at_start, same_at_end,
|
|
|
2904 !NILP (visit) ? INSDEL_NO_LOCKING : 0);
|
|
|
2905 /* Insert from the file at the proper position. */
|
|
|
2906 BUF_SET_PT (buf, same_at_start);
|
|
|
2907 }
|
|
|
2908 #endif /* FSFMACS_SPEEDY_INSERT */
|
|
|
2909
|
|
173
|
2910 if (!not_regular)
|
|
|
2911 {
|
|
|
2912 total = XINT (end) - XINT (beg);
|
|
|
2913
|
|
|
2914 /* Make sure point-max won't overflow after this insertion. */
|
|
227
|
2915 if (total != XINT (make_int (total)))
|
|
173
|
2916 error ("Maximum buffer size exceeded");
|
|
|
2917 }
|
|
|
2918 else
|
|
274
|
2919 /* For a special file, all we can do is guess. The value of -1
|
|
|
2920 will make the stream functions read as much as possible. */
|
|
|
2921 total = -1;
|
|
0
|
2922
|
|
|
2923 if (XINT (beg) != 0
|
|
|
2924 #ifdef FSFMACS_SPEEDY_INSERT
|
|
|
2925 /* why was this here? asked jwz. The reason is that the replace-mode
|
|
|
2926 connivings above will normally put the file pointer other than
|
|
|
2927 where it should be. */
|
|
|
2928 || !NILP (replace)
|
|
|
2929 #endif /* !FSFMACS_SPEEDY_INSERT */
|
|
|
2930 )
|
|
|
2931 {
|
|
|
2932 if (lseek (fd, XINT (beg), 0) < 0)
|
|
227
|
2933 report_file_error ("Setting file position", list1 (filename));
|
|
0
|
2934 }
|
|
|
2935
|
|
|
2936 {
|
|
|
2937 Bufpos cur_point = BUF_PT (buf);
|
|
|
2938 struct gcpro ngcpro1;
|
|
|
2939 Lisp_Object stream = make_filedesc_input_stream (fd, 0, total,
|
|
|
2940 LSTR_ALLOW_QUIT);
|
|
|
2941
|
|
|
2942 NGCPRO1 (stream);
|
|
|
2943 Lstream_set_buffering (XLSTREAM (stream), LSTREAM_BLOCKN_BUFFERED, 65536);
|
|
259
|
2944 #ifdef FILE_CODING
|
|
70
|
2945 stream = make_decoding_input_stream
|
|
|
2946 (XLSTREAM (stream), Fget_coding_system (codesys));
|
|
|
2947 Lstream_set_character_mode (XLSTREAM (stream));
|
|
|
2948 Lstream_set_buffering (XLSTREAM (stream), LSTREAM_BLOCKN_BUFFERED, 65536);
|
|
274
|
2949 #endif /* FILE_CODING */
|
|
0
|
2950
|
|
|
2951 record_unwind_protect (close_stream_unwind, stream);
|
|
|
2952
|
|
16
|
2953 /* No need to limit the amount of stuff we attempt to read. (It would
|
|
|
2954 be incorrect, anyway, when Mule is enabled.) Instead, the limiting
|
|
|
2955 occurs inside of the filedesc stream. */
|
|
0
|
2956 while (1)
|
|
|
2957 {
|
|
|
2958 Bytecount this_len;
|
|
|
2959 Charcount cc_inserted;
|
|
|
2960
|
|
|
2961 QUIT;
|
|
|
2962 this_len = Lstream_read (XLSTREAM (stream), read_buf,
|
|
|
2963 sizeof (read_buf));
|
|
151
|
2964
|
|
0
|
2965 if (this_len <= 0)
|
|
|
2966 {
|
|
|
2967 if (this_len < 0)
|
|
|
2968 saverrno = errno;
|
|
|
2969 break;
|
|
|
2970 }
|
|
|
2971
|
|
|
2972 cc_inserted = buffer_insert_raw_string_1 (buf, cur_point, read_buf,
|
|
|
2973 this_len,
|
|
|
2974 !NILP (visit)
|
|
|
2975 ? INSDEL_NO_LOCKING : 0);
|
|
|
2976 inserted += cc_inserted;
|
|
|
2977 cur_point += cc_inserted;
|
|
|
2978 }
|
|
259
|
2979 #ifdef FILE_CODING
|
|
70
|
2980 if (!NILP (used_codesys))
|
|
|
2981 {
|
|
|
2982 Fset (used_codesys,
|
|
|
2983 XCODING_SYSTEM_NAME (decoding_stream_coding_system (XLSTREAM (stream))));
|
|
|
2984 }
|
|
274
|
2985 #endif /* FILE_CODING */
|
|
0
|
2986 NUNGCPRO;
|
|
|
2987 }
|
|
|
2988
|
|
|
2989 /* Close the file/stream */
|
|
|
2990 unbind_to (speccount, Qnil);
|
|
|
2991
|
|
|
2992 if (saverrno != 0)
|
|
|
2993 {
|
|
|
2994 error ("IO error reading %s: %s",
|
|
16
|
2995 XSTRING_DATA (filename), strerror (saverrno));
|
|
0
|
2996 }
|
|
|
2997
|
|
|
2998 notfound:
|
|
|
2999 handled:
|
|
|
3000
|
|
|
3001 end_multiple_change (buf, mc_count);
|
|
|
3002
|
|
|
3003 if (!NILP (visit))
|
|
|
3004 {
|
|
|
3005 if (!EQ (buf->undo_list, Qt))
|
|
|
3006 buf->undo_list = Qnil;
|
|
|
3007 #ifdef APOLLO
|
|
16
|
3008 stat ((char *) XSTRING_DATA (filename), &st);
|
|
0
|
3009 #endif
|
|
|
3010 if (NILP (handler))
|
|
|
3011 {
|
|
|
3012 buf->modtime = st.st_mtime;
|
|
|
3013 buf->filename = filename;
|
|
|
3014 /* XEmacs addition: */
|
|
|
3015 /* This function used to be in C, ostensibly so that
|
|
|
3016 it could be called here. But that's just silly.
|
|
|
3017 There's no reason C code can't call out to Lisp
|
|
|
3018 code, and it's a lot cleaner this way. */
|
|
|
3019 if (!NILP (Ffboundp (Qcompute_buffer_file_truename)))
|
|
|
3020 call1 (Qcompute_buffer_file_truename, make_buffer (buf));
|
|
|
3021 }
|
|
|
3022 BUF_SAVE_MODIFF (buf) = BUF_MODIFF (buf);
|
|
|
3023 buf->auto_save_modified = BUF_MODIFF (buf);
|
|
272
|
3024 buf->saved_size = make_int (BUF_SIZE (buf));
|
|
0
|
3025 #ifdef CLASH_DETECTION
|
|
|
3026 if (NILP (handler))
|
|
|
3027 {
|
|
|
3028 if (!NILP (buf->file_truename))
|
|
|
3029 unlock_file (buf->file_truename);
|
|
|
3030 unlock_file (filename);
|
|
|
3031 }
|
|
|
3032 #endif /* CLASH_DETECTION */
|
|
|
3033 if (not_regular)
|
|
|
3034 RETURN_UNGCPRO (Fsignal (Qfile_error,
|
|
|
3035 list2 (build_string ("not a regular file"),
|
|
|
3036 filename)));
|
|
|
3037
|
|
|
3038 /* If visiting nonexistent file, return nil. */
|
|
|
3039 if (buf->modtime == -1)
|
|
|
3040 report_file_error ("Opening input file",
|
|
|
3041 list1 (filename));
|
|
|
3042 }
|
|
|
3043
|
|
|
3044 /* Decode file format */
|
|
|
3045 if (inserted > 0)
|
|
|
3046 {
|
|
151
|
3047 Lisp_Object insval = call3 (Qformat_decode,
|
|
0
|
3048 Qnil, make_int (inserted), visit);
|
|
|
3049 CHECK_INT (insval);
|
|
|
3050 inserted = XINT (insval);
|
|
|
3051 }
|
|
|
3052
|
|
|
3053 if (inserted > 0)
|
|
|
3054 {
|
|
227
|
3055 Lisp_Object p;
|
|
0
|
3056 struct gcpro ngcpro1;
|
|
|
3057
|
|
|
3058 NGCPRO1 (p);
|
|
227
|
3059 EXTERNAL_LIST_LOOP (p, Vafter_insert_file_functions)
|
|
0
|
3060 {
|
|
|
3061 Lisp_Object insval =
|
|
227
|
3062 call1 (XCAR (p), make_int (inserted));
|
|
0
|
3063 if (!NILP (insval))
|
|
|
3064 {
|
|
|
3065 CHECK_NATNUM (insval);
|
|
|
3066 inserted = XINT (insval);
|
|
|
3067 }
|
|
|
3068 QUIT;
|
|
|
3069 }
|
|
|
3070 NUNGCPRO;
|
|
|
3071 }
|
|
|
3072
|
|
|
3073 UNGCPRO;
|
|
|
3074
|
|
|
3075 if (!NILP (val))
|
|
|
3076 return (val);
|
|
|
3077 else
|
|
|
3078 return (list2 (filename, make_int (inserted)));
|
|
|
3079 }
|
|
|
3080
|
|
|
3081
|
|
|
3082 static int a_write (Lisp_Object outstream, Lisp_Object instream, int pos,
|
|
|
3083 Lisp_Object *annot);
|
|
|
3084 static Lisp_Object build_annotations (Lisp_Object start, Lisp_Object end);
|
|
|
3085
|
|
|
3086 /* If build_annotations switched buffers, switch back to BUF.
|
|
|
3087 Kill the temporary buffer that was selected in the meantime. */
|
|
|
3088
|
|
151
|
3089 static Lisp_Object
|
|
0
|
3090 build_annotations_unwind (Lisp_Object buf)
|
|
|
3091 {
|
|
|
3092 Lisp_Object tembuf;
|
|
|
3093
|
|
|
3094 if (XBUFFER (buf) == current_buffer)
|
|
|
3095 return Qnil;
|
|
|
3096 tembuf = Fcurrent_buffer ();
|
|
|
3097 Fset_buffer (buf);
|
|
|
3098 Fkill_buffer (tembuf);
|
|
|
3099 return Qnil;
|
|
|
3100 }
|
|
|
3101
|
|
70
|
3102 DEFUN ("write-region-internal", Fwrite_region_internal, 3, 7,
|
|
20
|
3103 "r\nFWrite region to file: ", /*
|
|
70
|
3104 Write current region into specified file; no coding-system frobbing.
|
|
|
3105 This function is identical to `write-region' except for the handling
|
|
|
3106 of the CODESYS argument under XEmacs/Mule. (When Mule support is not
|
|
|
3107 present, both functions are identical and ignore the CODESYS argument.)
|
|
|
3108 If support for Mule exists in this Emacs, the file is encoded according
|
|
|
3109 to the value of CODESYS. If this is nil, no code conversion occurs.
|
|
20
|
3110 */
|
|
70
|
3111 (start, end, filename, append, visit, lockname, codesys))
|
|
0
|
3112 {
|
|
116
|
3113 /* This function can call lisp */
|
|
0
|
3114 int desc;
|
|
|
3115 int failure;
|
|
|
3116 int save_errno = 0;
|
|
|
3117 struct stat st;
|
|
|
3118 Lisp_Object fn;
|
|
|
3119 int speccount = specpdl_depth ();
|
|
|
3120 int visiting_other = STRINGP (visit);
|
|
|
3121 int visiting = (EQ (visit, Qt) || visiting_other);
|
|
|
3122 int quietly = (!visiting && !NILP (visit));
|
|
|
3123 Lisp_Object visit_file = Qnil;
|
|
|
3124 Lisp_Object annotations = Qnil;
|
|
|
3125 struct buffer *given_buffer;
|
|
|
3126 Bufpos start1, end1;
|
|
|
3127
|
|
114
|
3128 /* #### dmoore - if Fexpand_file_name or handlers kill the buffer,
|
|
|
3129 we should signal an error rather than blissfully continuing
|
|
|
3130 along. ARGH, this function is going to lose lose lose. We need
|
|
|
3131 to protect the current_buffer from being destroyed, but the
|
|
|
3132 multiple return points make this a pain in the butt. */
|
|
|
3133
|
|
259
|
3134 #ifdef FILE_CODING
|
|
70
|
3135 codesys = Fget_coding_system (codesys);
|
|
274
|
3136 #endif /* FILE_CODING */
|
|
70
|
3137
|
|
0
|
3138 if (current_buffer->base_buffer && ! NILP (visit))
|
|
|
3139 error ("Cannot do file visiting in an indirect buffer");
|
|
|
3140
|
|
|
3141 if (!NILP (start) && !STRINGP (start))
|
|
|
3142 get_buffer_range_char (current_buffer, start, end, &start1, &end1, 0);
|
|
|
3143
|
|
|
3144 {
|
|
|
3145 Lisp_Object handler;
|
|
|
3146 struct gcpro gcpro1, gcpro2, gcpro3, gcpro4, gcpro5;
|
|
114
|
3147
|
|
0
|
3148 GCPRO5 (start, filename, visit, visit_file, lockname);
|
|
|
3149
|
|
|
3150 if (visiting_other)
|
|
|
3151 visit_file = Fexpand_file_name (visit, Qnil);
|
|
|
3152 else
|
|
|
3153 visit_file = filename;
|
|
|
3154 filename = Fexpand_file_name (filename, Qnil);
|
|
|
3155
|
|
|
3156 UNGCPRO;
|
|
|
3157
|
|
|
3158 if (NILP (lockname))
|
|
|
3159 lockname = visit_file;
|
|
|
3160
|
|
|
3161 /* If the file name has special constructs in it,
|
|
|
3162 call the corresponding file handler. */
|
|
|
3163 handler = Ffind_file_name_handler (filename, Qwrite_region);
|
|
|
3164 /* If FILENAME has no handler, see if VISIT has one. */
|
|
|
3165 if (NILP (handler) && STRINGP (visit))
|
|
|
3166 handler = Ffind_file_name_handler (visit, Qwrite_region);
|
|
|
3167
|
|
|
3168 if (!NILP (handler))
|
|
|
3169 {
|
|
151
|
3170 Lisp_Object val = call8 (handler, Qwrite_region, start, end,
|
|
86
|
3171 filename, append, visit, lockname, codesys);
|
|
0
|
3172 if (visiting)
|
|
|
3173 {
|
|
|
3174 BUF_SAVE_MODIFF (current_buffer) = BUF_MODIFF (current_buffer);
|
|
272
|
3175 current_buffer->saved_size = make_int (BUF_SIZE (current_buffer));
|
|
0
|
3176 current_buffer->filename = visit_file;
|
|
|
3177 MARK_MODELINE_CHANGED;
|
|
|
3178 }
|
|
|
3179 return val;
|
|
|
3180 }
|
|
|
3181 }
|
|
|
3182
|
|
|
3183 #ifdef CLASH_DETECTION
|
|
|
3184 if (!auto_saving)
|
|
|
3185 {
|
|
114
|
3186 Lisp_Object curbuf;
|
|
|
3187 struct gcpro gcpro1, gcpro2, gcpro3, gcpro4, gcpro5;
|
|
|
3188
|
|
|
3189 XSETBUFFER (curbuf, current_buffer);
|
|
|
3190 GCPRO5 (start, filename, visit_file, lockname, curbuf);
|
|
0
|
3191 lock_file (lockname);
|
|
|
3192 UNGCPRO;
|
|
|
3193 }
|
|
|
3194 #endif /* CLASH_DETECTION */
|
|
|
3195
|
|
|
3196 /* Special kludge to simplify auto-saving. */
|
|
|
3197 if (NILP (start))
|
|
|
3198 {
|
|
|
3199 start1 = BUF_BEG (current_buffer);
|
|
|
3200 end1 = BUF_Z (current_buffer);
|
|
|
3201 }
|
|
|
3202
|
|
|
3203 record_unwind_protect (build_annotations_unwind, Fcurrent_buffer ());
|
|
|
3204
|
|
|
3205 given_buffer = current_buffer;
|
|
|
3206 annotations = build_annotations (start, end);
|
|
|
3207 if (current_buffer != given_buffer)
|
|
|
3208 {
|
|
|
3209 start1 = BUF_BEGV (current_buffer);
|
|
|
3210 end1 = BUF_ZV (current_buffer);
|
|
|
3211 }
|
|
|
3212
|
|
|
3213 fn = filename;
|
|
|
3214 desc = -1;
|
|
|
3215 if (!NILP (append))
|
|
265
|
3216 {
|
|
|
3217 desc = open ((char *) XSTRING_DATA (fn), O_WRONLY | OPEN_BINARY, 0);
|
|
|
3218 }
|
|
0
|
3219 if (desc < 0)
|
|
|
3220 {
|
|
251
|
3221 desc = open ((char *) XSTRING_DATA (fn),
|
|
|
3222 (O_WRONLY | O_TRUNC | O_CREAT | OPEN_BINARY),
|
|
|
3223 ((auto_saving) ? auto_save_mode_bits : CREAT_MODE));
|
|
0
|
3224 }
|
|
|
3225
|
|
|
3226 if (desc < 0)
|
|
|
3227 {
|
|
|
3228 #ifdef CLASH_DETECTION
|
|
|
3229 save_errno = errno;
|
|
|
3230 if (!auto_saving) unlock_file (lockname);
|
|
|
3231 errno = save_errno;
|
|
|
3232 #endif /* CLASH_DETECTION */
|
|
227
|
3233 report_file_error ("Opening output file", list1 (filename));
|
|
0
|
3234 }
|
|
|
3235
|
|
|
3236 {
|
|
|
3237 Lisp_Object desc_locative = Fcons (make_int (desc), Qnil);
|
|
|
3238 Lisp_Object instream = Qnil, outstream = Qnil;
|
|
|
3239 struct gcpro gcpro1, gcpro2;
|
|
|
3240 /* need to gcpro; QUIT could happen out of call to write() */
|
|
|
3241 GCPRO2 (instream, outstream);
|
|
|
3242
|
|
|
3243 record_unwind_protect (close_file_unwind, desc_locative);
|
|
|
3244
|
|
|
3245 if (!NILP (append))
|
|
|
3246 {
|
|
|
3247 if (lseek (desc, 0, 2) < 0)
|
|
|
3248 {
|
|
|
3249 #ifdef CLASH_DETECTION
|
|
|
3250 if (!auto_saving) unlock_file (lockname);
|
|
|
3251 #endif /* CLASH_DETECTION */
|
|
|
3252 report_file_error ("Lseek error",
|
|
|
3253 list1 (filename));
|
|
|
3254 }
|
|
|
3255 }
|
|
|
3256
|
|
|
3257 failure = 0;
|
|
|
3258
|
|
|
3259 /* Note: I tried increasing the buffering size, along with
|
|
|
3260 various other tricks, but nothing seemed to make much of
|
|
|
3261 a difference in the time it took to save a large file.
|
|
|
3262 (Actually that's not true. With a local disk, changing
|
|
|
3263 the buffer size doesn't seem to make much difference.
|
|
|
3264 With an NFS-mounted disk, it could make a lot of difference
|
|
|
3265 because you're affecting the number of network requests
|
|
|
3266 that need to be made, and there could be a large latency
|
|
|
3267 for each request. So I've increased the buffer size
|
|
|
3268 to 64K.) */
|
|
|
3269 outstream = make_filedesc_output_stream (desc, 0, -1, 0);
|
|
|
3270 Lstream_set_buffering (XLSTREAM (outstream),
|
|
|
3271 LSTREAM_BLOCKN_BUFFERED, 65536);
|
|
259
|
3272 #ifdef FILE_CODING
|
|
70
|
3273 outstream =
|
|
185
|
3274 make_encoding_output_stream (XLSTREAM (outstream), codesys);
|
|
70
|
3275 Lstream_set_buffering (XLSTREAM (outstream),
|
|
|
3276 LSTREAM_BLOCKN_BUFFERED, 65536);
|
|
274
|
3277 #endif /* FILE_CODING */
|
|
0
|
3278 if (STRINGP (start))
|
|
|
3279 {
|
|
|
3280 instream = make_lisp_string_input_stream (start, 0, -1);
|
|
|
3281 start1 = 0;
|
|
|
3282 }
|
|
|
3283 else
|
|
|
3284 instream = make_lisp_buffer_input_stream (current_buffer, start1, end1,
|
|
|
3285 LSTR_SELECTIVE |
|
|
|
3286 LSTR_IGNORE_ACCESSIBLE);
|
|
|
3287 failure = (0 > (a_write (outstream, instream, start1,
|
|
|
3288 &annotations)));
|
|
|
3289 save_errno = errno;
|
|
|
3290 /* Note that this doesn't close the desc since we created the
|
|
|
3291 stream without the LSTR_CLOSING flag, but it does
|
|
|
3292 flush out any buffered data. */
|
|
|
3293 if (Lstream_close (XLSTREAM (outstream)) < 0)
|
|
|
3294 {
|
|
|
3295 failure = 1;
|
|
|
3296 save_errno = errno;
|
|
|
3297 }
|
|
|
3298 Lstream_close (XLSTREAM (instream));
|
|
|
3299 UNGCPRO;
|
|
|
3300
|
|
|
3301 #ifdef HAVE_FSYNC
|
|
|
3302 /* Note fsync appears to change the modtime on BSD4.2 (both vax and sun).
|
|
|
3303 Disk full in NFS may be reported here. */
|
|
|
3304 /* mib says that closing the file will try to write as fast as NFS can do
|
|
|
3305 it, and that means the fsync here is not crucial for autosave files. */
|
|
|
3306 if (!auto_saving && fsync (desc) < 0
|
|
|
3307 /* If fsync fails with EINTR, don't treat that as serious. */
|
|
|
3308 && errno != EINTR)
|
|
|
3309 {
|
|
|
3310 failure = 1;
|
|
|
3311 save_errno = errno;
|
|
|
3312 }
|
|
183
|
3313 #endif /* HAVE_FSYNC */
|
|
0
|
3314
|
|
151
|
3315 /* Spurious "file has changed on disk" warnings have been
|
|
0
|
3316 observed on Suns as well.
|
|
|
3317 It seems that `close' can change the modtime, under nfs.
|
|
|
3318
|
|
|
3319 (This has supposedly been fixed in Sunos 4,
|
|
|
3320 but who knows about all the other machines with NFS?) */
|
|
|
3321 /* On VMS and APOLLO, must do the stat after the close
|
|
|
3322 since closing changes the modtime. */
|
|
276
|
3323 #if 1 /* !defined (VMS) && !defined (APOLLO) */
|
|
0
|
3324 fstat (desc, &st);
|
|
|
3325 #endif
|
|
|
3326
|
|
|
3327 /* NFS can report a write failure now. */
|
|
|
3328 if (close (desc) < 0)
|
|
|
3329 {
|
|
|
3330 failure = 1;
|
|
|
3331 save_errno = errno;
|
|
|
3332 }
|
|
|
3333
|
|
|
3334 /* Discard the close unwind-protect. Execute the one for
|
|
|
3335 build_annotations (switches back to the original current buffer
|
|
|
3336 as necessary). */
|
|
|
3337 XCAR (desc_locative) = Qnil;
|
|
|
3338 unbind_to (speccount, Qnil);
|
|
|
3339 }
|
|
151
|
3340
|
|
0
|
3341
|
|
276
|
3342 #if 0 /* defined (VMS) || defined (APOLLO) */
|
|
16
|
3343 stat ((char *) XSTRING_DATA (fn), &st);
|
|
0
|
3344 #endif
|
|
|
3345
|
|
|
3346 #ifdef CLASH_DETECTION
|
|
|
3347 if (!auto_saving)
|
|
|
3348 unlock_file (lockname);
|
|
|
3349 #endif /* CLASH_DETECTION */
|
|
|
3350
|
|
|
3351 /* Do this before reporting IO error
|
|
|
3352 to avoid a "file has changed on disk" warning on
|
|
|
3353 next attempt to save. */
|
|
|
3354 if (visiting)
|
|
|
3355 current_buffer->modtime = st.st_mtime;
|
|
|
3356
|
|
|
3357 if (failure)
|
|
151
|
3358 error ("IO error writing %s: %s",
|
|
|
3359 XSTRING_DATA (fn),
|
|
0
|
3360 strerror (save_errno));
|
|
|
3361
|
|
|
3362 if (visiting)
|
|
|
3363 {
|
|
|
3364 BUF_SAVE_MODIFF (current_buffer) = BUF_MODIFF (current_buffer);
|
|
272
|
3365 current_buffer->saved_size = make_int (BUF_SIZE (current_buffer));
|
|
0
|
3366 current_buffer->filename = visit_file;
|
|
|
3367 MARK_MODELINE_CHANGED;
|
|
|
3368 }
|
|
|
3369 else if (quietly)
|
|
|
3370 {
|
|
|
3371 return Qnil;
|
|
|
3372 }
|
|
|
3373
|
|
|
3374 if (!auto_saving)
|
|
|
3375 {
|
|
|
3376 if (visiting_other)
|
|
16
|
3377 message ("Wrote %s", XSTRING_DATA (visit_file));
|
|
0
|
3378 else
|
|
|
3379 {
|
|
|
3380 struct gcpro gcpro1;
|
|
|
3381 Lisp_Object fsp;
|
|
|
3382 GCPRO1 (fn);
|
|
|
3383
|
|
|
3384 fsp = Ffile_symlink_p (fn);
|
|
|
3385 if (NILP (fsp))
|
|
16
|
3386 message ("Wrote %s", XSTRING_DATA (fn));
|
|
0
|
3387 else
|
|
151
|
3388 message ("Wrote %s (symlink to %s)",
|
|
16
|
3389 XSTRING_DATA (fn), XSTRING_DATA (fsp));
|
|
0
|
3390 UNGCPRO;
|
|
|
3391 }
|
|
|
3392 }
|
|
|
3393 return Qnil;
|
|
|
3394 }
|
|
|
3395
|
|
|
3396 /* #### This is such a load of shit!!!! There is no way we should define
|
|
|
3397 something so stupid as a subr, just sort the fucking list more
|
|
|
3398 intelligently. */
|
|
20
|
3399 DEFUN ("car-less-than-car", Fcar_less_than_car, 2, 2, 0, /*
|
|
0
|
3400 Return t if (car A) is numerically less than (car B).
|
|
20
|
3401 */
|
|
|
3402 (a, b))
|
|
0
|
3403 {
|
|
|
3404 return Flss (Fcar (a), Fcar (b));
|
|
|
3405 }
|
|
|
3406
|
|
|
3407 /* Heh heh heh, let's define this too, just to aggravate the person who
|
|
|
3408 wrote the above comment. */
|
|
20
|
3409 DEFUN ("cdr-less-than-cdr", Fcdr_less_than_cdr, 2, 2, 0, /*
|
|
0
|
3410 Return t if (cdr A) is numerically less than (cdr B).
|
|
20
|
3411 */
|
|
|
3412 (a, b))
|
|
0
|
3413 {
|
|
|
3414 return Flss (Fcdr (a), Fcdr (b));
|
|
|
3415 }
|
|
|
3416
|
|
|
3417 /* Build the complete list of annotations appropriate for writing out
|
|
|
3418 the text between START and END, by calling all the functions in
|
|
|
3419 write-region-annotate-functions and merging the lists they return.
|
|
|
3420 If one of these functions switches to a different buffer, we assume
|
|
|
3421 that buffer contains altered text. Therefore, the caller must
|
|
|
3422 make sure to restore the current buffer in all cases,
|
|
|
3423 as save-excursion would do. */
|
|
|
3424
|
|
|
3425 static Lisp_Object
|
|
|
3426 build_annotations (Lisp_Object start, Lisp_Object end)
|
|
|
3427 {
|
|
|
3428 /* This function can GC */
|
|
|
3429 Lisp_Object annotations;
|
|
|
3430 Lisp_Object p, res;
|
|
|
3431 struct gcpro gcpro1, gcpro2;
|
|
215
|
3432 Lisp_Object original_buffer;
|
|
|
3433
|
|
|
3434 XSETBUFFER (original_buffer, current_buffer);
|
|
0
|
3435
|
|
|
3436 annotations = Qnil;
|
|
|
3437 p = Vwrite_region_annotate_functions;
|
|
|
3438 GCPRO2 (annotations, p);
|
|
|
3439 while (!NILP (p))
|
|
|
3440 {
|
|
|
3441 struct buffer *given_buffer = current_buffer;
|
|
|
3442 Vwrite_region_annotations_so_far = annotations;
|
|
|
3443 res = call2 (Fcar (p), start, end);
|
|
|
3444 /* If the function makes a different buffer current,
|
|
|
3445 assume that means this buffer contains altered text to be output.
|
|
|
3446 Reset START and END from the buffer bounds
|
|
|
3447 and discard all previous annotations because they should have
|
|
|
3448 been dealt with by this function. */
|
|
|
3449 if (current_buffer != given_buffer)
|
|
|
3450 {
|
|
|
3451 start = make_int (BUF_BEGV (current_buffer));
|
|
|
3452 end = make_int (BUF_ZV (current_buffer));
|
|
|
3453 annotations = Qnil;
|
|
|
3454 }
|
|
183
|
3455 Flength (res); /* Check basic validity of return value */
|
|
0
|
3456 annotations = merge (annotations, res, Qcar_less_than_car);
|
|
|
3457 p = Fcdr (p);
|
|
|
3458 }
|
|
|
3459
|
|
|
3460 /* Now do the same for annotation functions implied by the file-format */
|
|
|
3461 if (auto_saving && (!EQ (Vauto_save_file_format, Qt)))
|
|
|
3462 p = Vauto_save_file_format;
|
|
|
3463 else
|
|
|
3464 p = current_buffer->file_format;
|
|
|
3465 while (!NILP (p))
|
|
|
3466 {
|
|
|
3467 struct buffer *given_buffer = current_buffer;
|
|
|
3468 Vwrite_region_annotations_so_far = annotations;
|
|
215
|
3469 res = call4 (Qformat_annotate_function, Fcar (p), start, end,
|
|
|
3470 original_buffer);
|
|
0
|
3471 if (current_buffer != given_buffer)
|
|
|
3472 {
|
|
|
3473 start = make_int (BUF_BEGV (current_buffer));
|
|
|
3474 end = make_int (BUF_ZV (current_buffer));
|
|
|
3475 annotations = Qnil;
|
|
|
3476 }
|
|
183
|
3477 Flength (res);
|
|
0
|
3478 annotations = merge (annotations, res, Qcar_less_than_car);
|
|
|
3479 p = Fcdr (p);
|
|
|
3480 }
|
|
|
3481 UNGCPRO;
|
|
|
3482 return annotations;
|
|
|
3483 }
|
|
|
3484
|
|
|
3485 /* Write to stream OUTSTREAM the characters from INSTREAM (it is read until
|
|
|
3486 EOF is encountered), assuming they start at position POS in the buffer
|
|
|
3487 of string that STREAM refers to. Intersperse with them the annotations
|
|
|
3488 from *ANNOT that fall into the range of positions we are reading from,
|
|
|
3489 each at its appropriate position.
|
|
|
3490
|
|
|
3491 Modify *ANNOT by discarding elements as we output them.
|
|
|
3492 The return value is negative in case of system call failure. */
|
|
|
3493
|
|
|
3494 /* 4K should probably be fine. We just need to reduce the number of
|
|
|
3495 function calls to reasonable level. The Lstream stuff itself will
|
|
|
3496 batch to 64K to reduce the number of system calls. */
|
|
|
3497
|
|
|
3498 #define A_WRITE_BATCH_SIZE 4096
|
|
|
3499
|
|
|
3500 static int
|
|
|
3501 a_write (Lisp_Object outstream, Lisp_Object instream, int pos,
|
|
|
3502 Lisp_Object *annot)
|
|
|
3503 {
|
|
|
3504 Lisp_Object tem;
|
|
|
3505 int nextpos;
|
|
|
3506 unsigned char largebuf[A_WRITE_BATCH_SIZE];
|
|
|
3507 Lstream *instr = XLSTREAM (instream);
|
|
|
3508 Lstream *outstr = XLSTREAM (outstream);
|
|
|
3509
|
|
272
|
3510 while (LISTP (*annot))
|
|
0
|
3511 {
|
|
|
3512 tem = Fcar_safe (Fcar (*annot));
|
|
|
3513 if (INTP (tem))
|
|
|
3514 nextpos = XINT (tem);
|
|
|
3515 else
|
|
|
3516 nextpos = INT_MAX;
|
|
70
|
3517 #ifdef MULE
|
|
|
3518 /* If there are annotations left and we have Mule, then we
|
|
|
3519 have to do the I/O one emchar at a time so we can
|
|
|
3520 determine when to insert the annotation. */
|
|
|
3521 if (!NILP (*annot))
|
|
|
3522 {
|
|
|
3523 Emchar ch;
|
|
|
3524 while (pos != nextpos && (ch = Lstream_get_emchar (instr)) != EOF)
|
|
|
3525 {
|
|
|
3526 if (Lstream_put_emchar (outstr, ch) < 0)
|
|
|
3527 return -1;
|
|
|
3528 pos++;
|
|
|
3529 }
|
|
|
3530 }
|
|
|
3531 else
|
|
183
|
3532 #endif /* MULE */
|
|
0
|
3533 {
|
|
|
3534 while (pos != nextpos)
|
|
|
3535 {
|
|
|
3536 /* Otherwise there is no point to that. Just go in batches. */
|
|
|
3537 int chunk = min (nextpos - pos, A_WRITE_BATCH_SIZE);
|
|
151
|
3538
|
|
0
|
3539 chunk = Lstream_read (instr, largebuf, chunk);
|
|
|
3540 if (chunk < 0)
|
|
|
3541 return -1;
|
|
|
3542 if (chunk == 0) /* EOF */
|
|
|
3543 break;
|
|
|
3544 if (Lstream_write (outstr, largebuf, chunk) < chunk)
|
|
|
3545 return -1;
|
|
|
3546 pos += chunk;
|
|
|
3547 }
|
|
|
3548 }
|
|
|
3549 if (pos == nextpos)
|
|
|
3550 {
|
|
|
3551 tem = Fcdr (Fcar (*annot));
|
|
|
3552 if (STRINGP (tem))
|
|
|
3553 {
|
|
16
|
3554 if (Lstream_write (outstr, XSTRING_DATA (tem),
|
|
|
3555 XSTRING_LENGTH (tem)) < 0)
|
|
0
|
3556 return -1;
|
|
|
3557 }
|
|
|
3558 *annot = Fcdr (*annot);
|
|
|
3559 }
|
|
|
3560 else
|
|
|
3561 return 0;
|
|
|
3562 }
|
|
|
3563 return -1;
|
|
|
3564 }
|
|
|
3565
|
|
|
3566
|
|
|
3567
|
|
|
3568 #if 0
|
|
|
3569 #include <des_crypt.h>
|
|
|
3570
|
|
|
3571 #define CRYPT_BLOCK_SIZE 8 /* bytes */
|
|
|
3572 #define CRYPT_KEY_SIZE 8 /* bytes */
|
|
|
3573
|
|
20
|
3574 DEFUN ("encrypt-string", Fencrypt_string, 2, 2, 0, /*
|
|
0
|
3575 Encrypt STRING using KEY.
|
|
20
|
3576 */
|
|
|
3577 (string, key))
|
|
0
|
3578 {
|
|
|
3579 char *encrypted_string, *raw_key;
|
|
|
3580 int rounded_size, extra, key_size;
|
|
|
3581
|
|
|
3582 /* !!#### May produce bogus data under Mule. */
|
|
|
3583 CHECK_STRING (string);
|
|
|
3584 CHECK_STRING (key);
|
|
|
3585
|
|
16
|
3586 extra = XSTRING_LENGTH (string) % CRYPT_BLOCK_SIZE;
|
|
|
3587 rounded_size = XSTRING_LENGTH (string) + extra;
|
|
0
|
3588 encrypted_string = alloca (rounded_size + 1);
|
|
16
|
3589 memcpy (encrypted_string, XSTRING_DATA (string), XSTRING_LENGTH (string));
|
|
0
|
3590 memset (encrypted_string + rounded_size - extra, 0, extra + 1);
|
|
|
3591
|
|
183
|
3592 key_size = min (CRYPT_KEY_SIZE, XSTRING_LENGTH (key))
|
|
0
|
3593
|
|
|
3594 raw_key = alloca (CRYPT_KEY_SIZE + 1);
|
|
16
|
3595 memcpy (raw_key, XSTRING_DATA (key), key_size);
|
|
0
|
3596 memset (raw_key + key_size, 0, (CRYPT_KEY_SIZE + 1) - key_size);
|
|
|
3597
|
|
183
|
3598 ecb_crypt (raw_key, encrypted_string, rounded_size,
|
|
|
3599 DES_ENCRYPT | DES_SW);
|
|
0
|
3600 return make_string (encrypted_string, rounded_size);
|
|
|
3601 }
|
|
|
3602
|
|
20
|
3603 DEFUN ("decrypt-string", Fdecrypt_string, 2, 2, 0, /*
|
|
0
|
3604 Decrypt STRING using KEY.
|
|
20
|
3605 */
|
|
|
3606 (string, key))
|
|
0
|
3607 {
|
|
|
3608 char *decrypted_string, *raw_key;
|
|
|
3609 int string_size, key_size;
|
|
|
3610
|
|
|
3611 CHECK_STRING (string);
|
|
|
3612 CHECK_STRING (key);
|
|
|
3613
|
|
16
|
3614 string_size = XSTRING_LENGTH (string) + 1;
|
|
0
|
3615 decrypted_string = alloca (string_size);
|
|
16
|
3616 memcpy (decrypted_string, XSTRING_DATA (string), string_size);
|
|
0
|
3617 decrypted_string[string_size - 1] = '\0';
|
|
|
3618
|
|
183
|
3619 key_size = min (CRYPT_KEY_SIZE, XSTRING_LENGTH (key))
|
|
0
|
3620
|
|
|
3621 raw_key = alloca (CRYPT_KEY_SIZE + 1);
|
|
16
|
3622 memcpy (raw_key, XSTRING_DATA (key), key_size);
|
|
0
|
3623 memset (raw_key + key_size, 0, (CRYPT_KEY_SIZE + 1) - key_size);
|
|
|
3624
|
|
|
3625
|
|
183
|
3626 ecb_crypt (raw_key, decrypted_string, string_size, D | DES_SW);
|
|
0
|
3627 return make_string (decrypted_string, string_size - 1);
|
|
|
3628 }
|
|
183
|
3629 #endif /* 0 */
|
|
0
|
3630
|
|
|
3631
|
|
20
|
3632 DEFUN ("verify-visited-file-modtime", Fverify_visited_file_modtime, 1, 1, 0, /*
|
|
0
|
3633 Return t if last mod time of BUF's visited file matches what BUF records.
|
|
|
3634 This means that the file has not been changed since it was visited or saved.
|
|
20
|
3635 */
|
|
|
3636 (buf))
|
|
0
|
3637 {
|
|
116
|
3638 /* This function can call lisp */
|
|
0
|
3639 struct buffer *b;
|
|
|
3640 struct stat st;
|
|
|
3641 Lisp_Object handler;
|
|
|
3642
|
|
|
3643 CHECK_BUFFER (buf);
|
|
|
3644 b = XBUFFER (buf);
|
|
|
3645
|
|
|
3646 if (!STRINGP (b->filename)) return Qt;
|
|
|
3647 if (b->modtime == 0) return Qt;
|
|
|
3648
|
|
|
3649 /* If the file name has special constructs in it,
|
|
|
3650 call the corresponding file handler. */
|
|
|
3651 handler = Ffind_file_name_handler (b->filename,
|
|
|
3652 Qverify_visited_file_modtime);
|
|
|
3653 if (!NILP (handler))
|
|
|
3654 return call2 (handler, Qverify_visited_file_modtime, buf);
|
|
|
3655
|
|
16
|
3656 if (stat ((char *) XSTRING_DATA (b->filename), &st) < 0)
|
|
0
|
3657 {
|
|
|
3658 /* If the file doesn't exist now and didn't exist before,
|
|
|
3659 we say that it isn't modified, provided the error is a tame one. */
|
|
|
3660 if (errno == ENOENT || errno == EACCES || errno == ENOTDIR)
|
|
|
3661 st.st_mtime = -1;
|
|
|
3662 else
|
|
|
3663 st.st_mtime = 0;
|
|
|
3664 }
|
|
|
3665 if (st.st_mtime == b->modtime
|
|
|
3666 /* If both are positive, accept them if they are off by one second. */
|
|
|
3667 || (st.st_mtime > 0 && b->modtime > 0
|
|
|
3668 && (st.st_mtime == b->modtime + 1
|
|
|
3669 || st.st_mtime == b->modtime - 1)))
|
|
|
3670 return Qt;
|
|
|
3671 return Qnil;
|
|
|
3672 }
|
|
|
3673
|
|
20
|
3674 DEFUN ("clear-visited-file-modtime", Fclear_visited_file_modtime, 0, 0, 0, /*
|
|
0
|
3675 Clear out records of last mod time of visited file.
|
|
|
3676 Next attempt to save will certainly not complain of a discrepancy.
|
|
20
|
3677 */
|
|
|
3678 ())
|
|
0
|
3679 {
|
|
|
3680 current_buffer->modtime = 0;
|
|
|
3681 return Qnil;
|
|
|
3682 }
|
|
|
3683
|
|
20
|
3684 DEFUN ("visited-file-modtime", Fvisited_file_modtime, 0, 0, 0, /*
|
|
0
|
3685 Return the current buffer's recorded visited file modification time.
|
|
|
3686 The value is a list of the form (HIGH . LOW), like the time values
|
|
|
3687 that `file-attributes' returns.
|
|
20
|
3688 */
|
|
|
3689 ())
|
|
0
|
3690 {
|
|
|
3691 return time_to_lisp ((time_t) current_buffer->modtime);
|
|
|
3692 }
|
|
|
3693
|
|
20
|
3694 DEFUN ("set-visited-file-modtime", Fset_visited_file_modtime, 0, 1, 0, /*
|
|
0
|
3695 Update buffer's recorded modification time from the visited file's time.
|
|
|
3696 Useful if the buffer was not read from the file normally
|
|
|
3697 or if the file itself has been changed for some known benign reason.
|
|
|
3698 An argument specifies the modification time value to use
|
|
272
|
3699 \(instead of that of the visited file), in the form of a list
|
|
|
3700 \(HIGH . LOW) or (HIGH LOW).
|
|
20
|
3701 */
|
|
|
3702 (time_list))
|
|
0
|
3703 {
|
|
116
|
3704 /* This function can call lisp */
|
|
0
|
3705 if (!NILP (time_list))
|
|
|
3706 {
|
|
|
3707 time_t the_time;
|
|
|
3708 lisp_to_time (time_list, &the_time);
|
|
|
3709 current_buffer->modtime = (int) the_time;
|
|
|
3710 }
|
|
|
3711 else
|
|
|
3712 {
|
|
|
3713 Lisp_Object filename;
|
|
|
3714 struct stat st;
|
|
|
3715 Lisp_Object handler;
|
|
114
|
3716 struct gcpro gcpro1, gcpro2, gcpro3;
|
|
151
|
3717
|
|
114
|
3718 GCPRO3 (filename, time_list, current_buffer->filename);
|
|
|
3719 filename = Fexpand_file_name (current_buffer->filename, Qnil);
|
|
0
|
3720
|
|
|
3721 /* If the file name has special constructs in it,
|
|
|
3722 call the corresponding file handler. */
|
|
|
3723 handler = Ffind_file_name_handler (filename, Qset_visited_file_modtime);
|
|
|
3724 UNGCPRO;
|
|
|
3725 if (!NILP (handler))
|
|
|
3726 /* The handler can find the file name the same way we did. */
|
|
|
3727 return call2 (handler, Qset_visited_file_modtime, Qnil);
|
|
16
|
3728 else if (stat ((char *) XSTRING_DATA (filename), &st) >= 0)
|
|
0
|
3729 current_buffer->modtime = st.st_mtime;
|
|
|
3730 }
|
|
|
3731
|
|
|
3732 return Qnil;
|
|
|
3733 }
|
|
|
3734
|
|
|
3735 static Lisp_Object
|
|
|
3736 auto_save_error (Lisp_Object condition_object, Lisp_Object ignored)
|
|
|
3737 {
|
|
116
|
3738 /* This function can call lisp */
|
|
0
|
3739 if (gc_in_progress)
|
|
|
3740 return Qnil;
|
|
110
|
3741 /* Don't try printing an error message after everything is gone! */
|
|
|
3742 if (preparing_for_armageddon)
|
|
|
3743 return Qnil;
|
|
0
|
3744 clear_echo_area (selected_frame (), Qauto_saving, 1);
|
|
|
3745 Fding (Qt, Qauto_save_error, Qnil);
|
|
82
|
3746 message ("Auto-saving...error for %s", XSTRING_DATA (current_buffer->name));
|
|
0
|
3747 Fsleep_for (make_int (1));
|
|
82
|
3748 message ("Auto-saving...error!for %s", XSTRING_DATA (current_buffer->name));
|
|
0
|
3749 Fsleep_for (make_int (1));
|
|
82
|
3750 message ("Auto-saving...error for %s", XSTRING_DATA (current_buffer->name));
|
|
0
|
3751 Fsleep_for (make_int (1));
|
|
|
3752 return Qnil;
|
|
|
3753 }
|
|
|
3754
|
|
|
3755 static Lisp_Object
|
|
|
3756 auto_save_1 (Lisp_Object ignored)
|
|
|
3757 {
|
|
116
|
3758 /* This function can call lisp */
|
|
|
3759 /* #### I think caller is protecting current_buffer? */
|
|
0
|
3760 struct stat st;
|
|
|
3761 Lisp_Object fn = current_buffer->filename;
|
|
|
3762 Lisp_Object a = current_buffer->auto_save_file_name;
|
|
|
3763
|
|
|
3764 if (!STRINGP (a))
|
|
|
3765 return (Qnil);
|
|
|
3766
|
|
|
3767 /* Get visited file's mode to become the auto save file's mode. */
|
|
|
3768 if (STRINGP (fn) &&
|
|
16
|
3769 stat ((char *) XSTRING_DATA (fn), &st) >= 0)
|
|
0
|
3770 /* But make sure we can overwrite it later! */
|
|
|
3771 auto_save_mode_bits = st.st_mode | 0600;
|
|
|
3772 else
|
|
|
3773 /* default mode for auto-save files of buffers with no file is
|
|
|
3774 readable by owner only. This may annoy some small number of
|
|
|
3775 people, but the alternative removes all privacy from email. */
|
|
|
3776 auto_save_mode_bits = 0600;
|
|
|
3777
|
|
|
3778 return
|
|
70
|
3779 /* !!#### need to deal with this 'escape-quoted everywhere */
|
|
|
3780 Fwrite_region_internal (Qnil, Qnil, a, Qnil, Qlambda, Qnil,
|
|
|
3781 #ifdef MULE
|
|
|
3782 Qescape_quoted
|
|
|
3783 #else
|
|
|
3784 Qnil
|
|
|
3785 #endif
|
|
|
3786 );
|
|
44
|
3787 }
|
|
|
3788
|
|
116
|
3789 static Lisp_Object
|
|
|
3790 auto_save_expand_name_error (Lisp_Object condition_object, Lisp_Object ignored)
|
|
|
3791 {
|
|
|
3792 /* #### this function should spew an error message about not being
|
|
|
3793 able to open the .saves file. */
|
|
|
3794 return Qnil;
|
|
|
3795 }
|
|
|
3796
|
|
|
3797 static Lisp_Object
|
|
|
3798 auto_save_expand_name (Lisp_Object name)
|
|
|
3799 {
|
|
|
3800 struct gcpro gcpro1;
|
|
|
3801
|
|
|
3802 /* note that caller did NOT gc protect name, so we do it. */
|
|
|
3803 /* #### dmoore - this might not be neccessary, if condition_case_1
|
|
|
3804 protects it. but I don't think it does. */
|
|
|
3805 GCPRO1 (name);
|
|
|
3806 RETURN_UNGCPRO (Fexpand_file_name (name, Qnil));
|
|
|
3807 }
|
|
|
3808
|
|
0
|
3809
|
|
|
3810 static Lisp_Object
|
|
|
3811 do_auto_save_unwind (Lisp_Object fd)
|
|
|
3812 {
|
|
|
3813 close (XINT (fd));
|
|
|
3814 return (fd);
|
|
|
3815 }
|
|
|
3816
|
|
|
3817 static Lisp_Object
|
|
|
3818 do_auto_save_unwind_2 (Lisp_Object old_auto_saving)
|
|
|
3819 {
|
|
|
3820 auto_saving = XINT (old_auto_saving);
|
|
|
3821 return Qnil;
|
|
|
3822 }
|
|
|
3823
|
|
|
3824 /* Fdo_auto_save() checks whether a GC is in progress when it is called,
|
|
|
3825 and if so, tries to avoid touching lisp objects.
|
|
|
3826
|
|
|
3827 The only time that Fdo_auto_save() is called while GC is in progress
|
|
|
3828 is if we're going down, as a result of an abort() or a kill signal.
|
|
|
3829 It's fairly important that we generate autosave files in that case!
|
|
|
3830 */
|
|
|
3831
|
|
20
|
3832 DEFUN ("do-auto-save", Fdo_auto_save, 0, 2, "", /*
|
|
0
|
3833 Auto-save all buffers that need it.
|
|
|
3834 This is all buffers that have auto-saving enabled
|
|
|
3835 and are changed since last auto-saved.
|
|
|
3836 Auto-saving writes the buffer into a file
|
|
|
3837 so that your editing is not lost if the system crashes.
|
|
|
3838 This file is not the file you visited; that changes only when you save.
|
|
|
3839 Normally we run the normal hook `auto-save-hook' before saving.
|
|
|
3840
|
|
|
3841 Non-nil first argument means do not print any message if successful.
|
|
|
3842 Non-nil second argument means save only current buffer.
|
|
20
|
3843 */
|
|
|
3844 (no_message, current_only))
|
|
0
|
3845 {
|
|
116
|
3846 /* This function can call lisp */
|
|
110
|
3847 struct buffer *b;
|
|
0
|
3848 Lisp_Object tail, buf;
|
|
|
3849 int auto_saved = 0;
|
|
|
3850 int do_handled_files;
|
|
|
3851 Lisp_Object oquit = Qnil;
|
|
|
3852 Lisp_Object listfile = Qnil;
|
|
110
|
3853 Lisp_Object old;
|
|
0
|
3854 int listdesc = -1;
|
|
|
3855 int speccount = specpdl_depth ();
|
|
110
|
3856 struct gcpro gcpro1, gcpro2, gcpro3;
|
|
|
3857
|
|
|
3858 XSETBUFFER (old, current_buffer);
|
|
|
3859 GCPRO3 (oquit, listfile, old);
|
|
0
|
3860 check_quit (); /* make Vquit_flag accurate */
|
|
|
3861 /* Ordinarily don't quit within this function,
|
|
|
3862 but don't make it impossible to quit (in case we get hung in I/O). */
|
|
|
3863 oquit = Vquit_flag;
|
|
|
3864 Vquit_flag = Qnil;
|
|
|
3865
|
|
|
3866 /* No further GCPRO needed, because (when it matters) all Lisp_Object
|
|
|
3867 variables point to non-strings reached from Vbuffer_alist. */
|
|
|
3868
|
|
|
3869 if (minibuf_level != 0 || preparing_for_armageddon)
|
|
|
3870 no_message = Qt;
|
|
|
3871
|
|
|
3872 run_hook (Qauto_save_hook);
|
|
|
3873
|
|
|
3874 if (GC_STRINGP (Vauto_save_list_file_name))
|
|
116
|
3875 listfile = condition_case_1 (Qt,
|
|
|
3876 auto_save_expand_name,
|
|
|
3877 Vauto_save_list_file_name,
|
|
|
3878 auto_save_expand_name_error, Qnil);
|
|
0
|
3879
|
|
|
3880 /* Make sure auto_saving is reset. */
|
|
|
3881 record_unwind_protect (do_auto_save_unwind_2, make_int (auto_saving));
|
|
|
3882
|
|
|
3883 auto_saving = 1;
|
|
|
3884
|
|
|
3885 /* First, save all files which don't have handlers. If Emacs is
|
|
|
3886 crashing, the handlers may tweak what is causing Emacs to crash
|
|
|
3887 in the first place, and it would be a shame if Emacs failed to
|
|
|
3888 autosave perfectly ordinary files because it couldn't handle some
|
|
|
3889 ange-ftp'd file. */
|
|
|
3890 for (do_handled_files = 0; do_handled_files < 2; do_handled_files++)
|
|
|
3891 {
|
|
|
3892 for (tail = Vbuffer_alist;
|
|
|
3893 GC_CONSP (tail);
|
|
|
3894 tail = XCDR (tail))
|
|
|
3895 {
|
|
|
3896 buf = XCDR (XCAR (tail));
|
|
|
3897 b = XBUFFER (buf);
|
|
|
3898
|
|
|
3899 if (!GC_NILP (current_only)
|
|
|
3900 && b != current_buffer)
|
|
|
3901 continue;
|
|
151
|
3902
|
|
0
|
3903 /* Don't auto-save indirect buffers.
|
|
|
3904 The base buffer takes care of it. */
|
|
|
3905 if (b->base_buffer)
|
|
|
3906 continue;
|
|
|
3907
|
|
|
3908 /* Check for auto save enabled
|
|
|
3909 and file changed since last auto save
|
|
|
3910 and file changed since last real save. */
|
|
|
3911 if (GC_STRINGP (b->auto_save_file_name)
|
|
|
3912 && BUF_SAVE_MODIFF (b) < BUF_MODIFF (b)
|
|
|
3913 && b->auto_save_modified < BUF_MODIFF (b)
|
|
|
3914 /* -1 means we've turned off autosaving for a while--see below. */
|
|
272
|
3915 && XINT (b->saved_size) >= 0
|
|
0
|
3916 && (do_handled_files
|
|
|
3917 || NILP (Ffind_file_name_handler (b->auto_save_file_name,
|
|
|
3918 Qwrite_region))))
|
|
|
3919 {
|
|
|
3920 EMACS_TIME before_time, after_time;
|
|
|
3921
|
|
|
3922 EMACS_GET_TIME (before_time);
|
|
|
3923 /* If we had a failure, don't try again for 20 minutes. */
|
|
|
3924 if (!preparing_for_armageddon
|
|
|
3925 && b->auto_save_failure_time >= 0
|
|
|
3926 && (EMACS_SECS (before_time) - b->auto_save_failure_time <
|
|
|
3927 1200))
|
|
|
3928 continue;
|
|
|
3929
|
|
|
3930 if (!preparing_for_armageddon &&
|
|
272
|
3931 (XINT (b->saved_size) * 10
|
|
0
|
3932 > (BUF_Z (b) - BUF_BEG (b)) * 13)
|
|
|
3933 /* A short file is likely to change a large fraction;
|
|
|
3934 spare the user annoying messages. */
|
|
272
|
3935 && XINT (b->saved_size) > 5000
|
|
0
|
3936 /* These messages are frequent and annoying for `*mail*'. */
|
|
272
|
3937 && !NILP (b->filename)
|
|
0
|
3938 && NILP (no_message)
|
|
|
3939 && disable_auto_save_when_buffer_shrinks)
|
|
|
3940 {
|
|
|
3941 /* It has shrunk too much; turn off auto-saving here.
|
|
|
3942 Unless we're about to crash, in which case auto-save it
|
|
|
3943 anyway.
|
|
|
3944 */
|
|
|
3945 message
|
|
|
3946 ("Buffer %s has shrunk a lot; auto save turned off there",
|
|
16
|
3947 XSTRING_DATA (b->name));
|
|
0
|
3948 /* Turn off auto-saving until there's a real save,
|
|
|
3949 and prevent any more warnings. */
|
|
272
|
3950 b->saved_size = make_int (-1);
|
|
0
|
3951 if (!gc_in_progress)
|
|
|
3952 Fsleep_for (make_int (1));
|
|
|
3953 continue;
|
|
|
3954 }
|
|
|
3955 set_buffer_internal (b);
|
|
|
3956 if (!auto_saved && GC_NILP (no_message))
|
|
|
3957 {
|
|
|
3958 static CONST unsigned char *msg
|
|
|
3959 = (CONST unsigned char *) "Auto-saving...";
|
|
|
3960 echo_area_message (selected_frame (), msg, Qnil,
|
|
|
3961 0, strlen ((CONST char *) msg),
|
|
|
3962 Qauto_saving);
|
|
|
3963 }
|
|
|
3964
|
|
|
3965 /* Open the auto-save list file, if necessary.
|
|
|
3966 We only do this now so that the file only exists
|
|
|
3967 if we actually auto-saved any files. */
|
|
|
3968 if (!auto_saved && GC_STRINGP (listfile) && listdesc < 0)
|
|
|
3969 {
|
|
251
|
3970 listdesc = open ((char *) XSTRING_DATA (listfile),
|
|
|
3971 O_WRONLY | O_TRUNC | O_CREAT | OPEN_BINARY,
|
|
|
3972 CREAT_MODE);
|
|
0
|
3973
|
|
|
3974 /* Arrange to close that file whether or not we get
|
|
|
3975 an error. */
|
|
|
3976 if (listdesc >= 0)
|
|
|
3977 record_unwind_protect (do_auto_save_unwind,
|
|
|
3978 make_int (listdesc));
|
|
|
3979 }
|
|
|
3980
|
|
|
3981 /* Record all the buffers that we are auto-saving in
|
|
|
3982 the special file that lists them. For each of
|
|
|
3983 these buffers, record visited name (if any) and
|
|
|
3984 auto save name. */
|
|
|
3985 if (listdesc >= 0)
|
|
|
3986 {
|
|
259
|
3987 CONST Extbyte *auto_save_file_name_ext;
|
|
0
|
3988 Extcount auto_save_file_name_ext_len;
|
|
151
|
3989
|
|
0
|
3990 GET_STRING_FILENAME_DATA_ALLOCA
|
|
|
3991 (b->auto_save_file_name,
|
|
|
3992 auto_save_file_name_ext,
|
|
|
3993 auto_save_file_name_ext_len);
|
|
|
3994 if (!NILP (b->filename))
|
|
|
3995 {
|
|
259
|
3996 CONST Extbyte *filename_ext;
|
|
0
|
3997 Extcount filename_ext_len;
|
|
151
|
3998
|
|
0
|
3999 GET_STRING_FILENAME_DATA_ALLOCA (b->filename,
|
|
|
4000 filename_ext,
|
|
|
4001 filename_ext_len);
|
|
|
4002 write (listdesc, filename_ext, filename_ext_len);
|
|
|
4003 }
|
|
|
4004 write (listdesc, "\n", 1);
|
|
|
4005 write (listdesc, auto_save_file_name_ext,
|
|
|
4006 auto_save_file_name_ext_len);
|
|
|
4007 write (listdesc, "\n", 1);
|
|
|
4008 }
|
|
|
4009
|
|
110
|
4010 /* dmoore - In a bad scenario we've set b=XBUFFER(buf)
|
|
|
4011 based on values in Vbuffer_alist. auto_save_1 may
|
|
|
4012 cause lisp handlers to run. Those handlers may kill
|
|
|
4013 the buffer and then GC. Since the buffer is killed,
|
|
|
4014 it's no longer in Vbuffer_alist so it might get reaped
|
|
|
4015 by the GC. We also need to protect tail. */
|
|
|
4016 /* #### There is probably a lot of other code which has
|
|
|
4017 pointers into buffers which may get blown away by
|
|
|
4018 handlers. */
|
|
|
4019 {
|
|
169
|
4020 struct gcpro ngcpro1, ngcpro2;
|
|
|
4021 NGCPRO2 (buf, tail);
|
|
110
|
4022 condition_case_1 (Qt,
|
|
|
4023 auto_save_1, Qnil,
|
|
|
4024 auto_save_error, Qnil);
|
|
169
|
4025 NUNGCPRO;
|
|
110
|
4026 }
|
|
|
4027 /* Handler killed our saved current-buffer! Pick any. */
|
|
|
4028 if (!BUFFER_LIVE_P (XBUFFER (old)))
|
|
|
4029 XSETBUFFER (old, current_buffer);
|
|
|
4030
|
|
|
4031 set_buffer_internal (XBUFFER (old));
|
|
0
|
4032 auto_saved++;
|
|
151
|
4033
|
|
110
|
4034 /* Handler killed their own buffer! */
|
|
|
4035 if (!BUFFER_LIVE_P(b))
|
|
|
4036 continue;
|
|
|
4037
|
|
0
|
4038 b->auto_save_modified = BUF_MODIFF (b);
|
|
272
|
4039 b->saved_size = make_int (BUF_SIZE (b));
|
|
0
|
4040 EMACS_GET_TIME (after_time);
|
|
|
4041 /* If auto-save took more than 60 seconds,
|
|
|
4042 assume it was an NFS failure that got a timeout. */
|
|
|
4043 if (EMACS_SECS (after_time) - EMACS_SECS (before_time) > 60)
|
|
|
4044 b->auto_save_failure_time = EMACS_SECS (after_time);
|
|
|
4045 }
|
|
|
4046 }
|
|
|
4047 }
|
|
|
4048
|
|
|
4049 /* Prevent another auto save till enough input events come in. */
|
|
|
4050 if (auto_saved)
|
|
|
4051 record_auto_save ();
|
|
|
4052
|
|
|
4053 /* If we didn't save anything into the listfile, remove the old
|
|
|
4054 one because nothing needed to be auto-saved. Do this afterwards
|
|
|
4055 rather than before in case we get a crash attempting to autosave
|
|
|
4056 (in that case we'd still want the old one around). */
|
|
|
4057 if (listdesc < 0 && !auto_saved && GC_STRINGP (listfile))
|
|
16
|
4058 unlink ((char *) XSTRING_DATA (listfile));
|
|
0
|
4059
|
|
|
4060 /* Show "...done" only if the echo area would otherwise be empty. */
|
|
|
4061 if (auto_saved && NILP (no_message)
|
|
|
4062 && NILP (clear_echo_area (selected_frame (), Qauto_saving, 0)))
|
|
|
4063 {
|
|
|
4064 static CONST unsigned char *msg
|
|
|
4065 = (CONST unsigned char *)"Auto-saving...done";
|
|
|
4066 echo_area_message (selected_frame (), msg, Qnil, 0,
|
|
|
4067 strlen ((CONST char *) msg), Qauto_saving);
|
|
|
4068 }
|
|
|
4069
|
|
|
4070 Vquit_flag = oquit;
|
|
|
4071
|
|
|
4072 RETURN_UNGCPRO (unbind_to (speccount, Qnil));
|
|
|
4073 }
|
|
|
4074
|
|
20
|
4075 DEFUN ("set-buffer-auto-saved", Fset_buffer_auto_saved, 0, 0, 0, /*
|
|
0
|
4076 Mark current buffer as auto-saved with its current text.
|
|
|
4077 No auto-save file will be written until the buffer changes again.
|
|
20
|
4078 */
|
|
|
4079 ())
|
|
0
|
4080 {
|
|
|
4081 current_buffer->auto_save_modified = BUF_MODIFF (current_buffer);
|
|
272
|
4082 current_buffer->saved_size = make_int (BUF_SIZE (current_buffer));
|
|
0
|
4083 current_buffer->auto_save_failure_time = -1;
|
|
|
4084 return Qnil;
|
|
|
4085 }
|
|
|
4086
|
|
20
|
4087 DEFUN ("clear-buffer-auto-save-failure", Fclear_buffer_auto_save_failure, 0, 0, 0, /*
|
|
0
|
4088 Clear any record of a recent auto-save failure in the current buffer.
|
|
20
|
4089 */
|
|
|
4090 ())
|
|
0
|
4091 {
|
|
|
4092 current_buffer->auto_save_failure_time = -1;
|
|
|
4093 return Qnil;
|
|
|
4094 }
|
|
|
4095
|
|
20
|
4096 DEFUN ("recent-auto-save-p", Frecent_auto_save_p, 0, 0, 0, /*
|
|
0
|
4097 Return t if buffer has been auto-saved since last read in or saved.
|
|
20
|
4098 */
|
|
|
4099 ())
|
|
0
|
4100 {
|
|
|
4101 return (BUF_SAVE_MODIFF (current_buffer) <
|
|
|
4102 current_buffer->auto_save_modified) ? Qt : Qnil;
|
|
|
4103 }
|
|
|
4104
|
|
|
4105
|
|
|
4106 /************************************************************************/
|
|
|
4107 /* initialization */
|
|
|
4108 /************************************************************************/
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4109
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4110 void
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4111 syms_of_fileio (void)
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4112 {
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4113 defsymbol (&Qexpand_file_name, "expand-file-name");
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4114 defsymbol (&Qfile_truename, "file-truename");
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4115 defsymbol (&Qsubstitute_in_file_name, "substitute-in-file-name");
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4116 defsymbol (&Qdirectory_file_name, "directory-file-name");
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4117 defsymbol (&Qfile_name_directory, "file-name-directory");
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4118 defsymbol (&Qfile_name_nondirectory, "file-name-nondirectory");
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4119 defsymbol (&Qunhandled_file_name_directory, "unhandled-file-name-directory");
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4120 defsymbol (&Qfile_name_as_directory, "file-name-as-directory");
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4121 defsymbol (&Qcopy_file, "copy-file");
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4122 defsymbol (&Qmake_directory_internal, "make-directory-internal");
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4123 defsymbol (&Qdelete_directory, "delete-directory");
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4124 defsymbol (&Qdelete_file, "delete-file");
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4125 defsymbol (&Qrename_file, "rename-file");
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4126 defsymbol (&Qadd_name_to_file, "add-name-to-file");
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4127 defsymbol (&Qmake_symbolic_link, "make-symbolic-link");
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4128 defsymbol (&Qfile_exists_p, "file-exists-p");
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4129 defsymbol (&Qfile_executable_p, "file-executable-p");
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4130 defsymbol (&Qfile_readable_p, "file-readable-p");
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4131 defsymbol (&Qfile_symlink_p, "file-symlink-p");
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4132 defsymbol (&Qfile_writable_p, "file-writable-p");
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4133 defsymbol (&Qfile_directory_p, "file-directory-p");
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4134 defsymbol (&Qfile_regular_p, "file-regular-p");
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4135 defsymbol (&Qfile_accessible_directory_p, "file-accessible-directory-p");
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4136 defsymbol (&Qfile_modes, "file-modes");
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4137 defsymbol (&Qset_file_modes, "set-file-modes");
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4138 defsymbol (&Qfile_newer_than_file_p, "file-newer-than-file-p");
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4139 defsymbol (&Qinsert_file_contents, "insert-file-contents");
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4140 defsymbol (&Qwrite_region, "write-region");
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4141 defsymbol (&Qverify_visited_file_modtime, "verify-visited-file-modtime");
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4142 defsymbol (&Qset_visited_file_modtime, "set-visited-file-modtime");
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4143 defsymbol (&Qcar_less_than_car, "car-less-than-car"); /* Vomitous! */
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4144
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4145 defsymbol (&Qfile_name_handler_alist, "file-name-handler-alist");
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4146 defsymbol (&Qauto_save_hook, "auto-save-hook");
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4147 defsymbol (&Qauto_save_error, "auto-save-error");
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4148 defsymbol (&Qauto_saving, "auto-saving");
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4149
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4150 defsymbol (&Qformat_decode, "format-decode");
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4151 defsymbol (&Qformat_annotate_function, "format-annotate-function");
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4152
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4153 defsymbol (&Qcompute_buffer_file_truename, "compute-buffer-file-truename");
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4154 deferror (&Qfile_error, "file-error", "File error", Qio_error);
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4155 deferror (&Qfile_already_exists, "file-already-exists",
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4156 "File already exists", Qfile_error);
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4157
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20
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4158 DEFSUBR (Ffind_file_name_handler);
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4159
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4160 DEFSUBR (Ffile_name_directory);
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4161 DEFSUBR (Ffile_name_nondirectory);
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4162 DEFSUBR (Funhandled_file_name_directory);
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4163 DEFSUBR (Ffile_name_as_directory);
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4164 DEFSUBR (Fdirectory_file_name);
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4165 DEFSUBR (Fmake_temp_name);
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4166 DEFSUBR (Fexpand_file_name);
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4167 DEFSUBR (Ffile_truename);
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4168 DEFSUBR (Fsubstitute_in_file_name);
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4169 DEFSUBR (Fcopy_file);
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4170 DEFSUBR (Fmake_directory_internal);
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4171 DEFSUBR (Fdelete_directory);
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4172 DEFSUBR (Fdelete_file);
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4173 DEFSUBR (Frename_file);
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4174 DEFSUBR (Fadd_name_to_file);
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0
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4175 #ifdef S_IFLNK
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20
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4176 DEFSUBR (Fmake_symbolic_link);
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0
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4177 #endif /* S_IFLNK */
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4178 #ifdef HPUX_NET
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20
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4179 DEFSUBR (Fsysnetunam);
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0
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4180 #endif /* HPUX_NET */
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20
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4181 DEFSUBR (Ffile_name_absolute_p);
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4182 DEFSUBR (Ffile_exists_p);
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4183 DEFSUBR (Ffile_executable_p);
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4184 DEFSUBR (Ffile_readable_p);
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4185 DEFSUBR (Ffile_writable_p);
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4186 DEFSUBR (Ffile_symlink_p);
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4187 DEFSUBR (Ffile_directory_p);
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4188 DEFSUBR (Ffile_accessible_directory_p);
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4189 DEFSUBR (Ffile_regular_p);
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4190 DEFSUBR (Ffile_modes);
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4191 DEFSUBR (Fset_file_modes);
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4192 DEFSUBR (Fset_default_file_modes);
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4193 DEFSUBR (Fdefault_file_modes);
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4194 DEFSUBR (Funix_sync);
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4195 DEFSUBR (Ffile_newer_than_file_p);
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4196 DEFSUBR (Finsert_file_contents_internal);
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4197 DEFSUBR (Fwrite_region_internal);
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4198 DEFSUBR (Fcar_less_than_car); /* Vomitous! */
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4199 DEFSUBR (Fcdr_less_than_cdr); /* Yeah oh yeah bucko .... */
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0
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4200 #if 0
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20
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4201 DEFSUBR (Fencrypt_string);
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4202 DEFSUBR (Fdecrypt_string);
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0
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4203 #endif
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20
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4204 DEFSUBR (Fverify_visited_file_modtime);
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4205 DEFSUBR (Fclear_visited_file_modtime);
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4206 DEFSUBR (Fvisited_file_modtime);
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4207 DEFSUBR (Fset_visited_file_modtime);
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4208
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4209 DEFSUBR (Fdo_auto_save);
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4210 DEFSUBR (Fset_buffer_auto_saved);
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4211 DEFSUBR (Fclear_buffer_auto_save_failure);
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4212 DEFSUBR (Frecent_auto_save_p);
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0
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4213 }
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4214
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4215 void
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4216 vars_of_fileio (void)
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4217 {
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4218 DEFVAR_LISP ("auto-save-file-format", &Vauto_save_file_format /*
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4219 *Format in which to write auto-save files.
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4220 Should be a list of symbols naming formats that are defined in `format-alist'.
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4221 If it is t, which is the default, auto-save files are written in the
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4222 same format as a regular save would use.
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4223 */ );
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4224 Vauto_save_file_format = Qt;
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4225
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4226 DEFVAR_LISP ("file-name-handler-alist", &Vfile_name_handler_alist /*
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4227 *Alist of elements (REGEXP . HANDLER) for file names handled specially.
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4228 If a file name matches REGEXP, then all I/O on that file is done by calling
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4229 HANDLER.
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4230
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4231 The first argument given to HANDLER is the name of the I/O primitive
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4232 to be handled; the remaining arguments are the arguments that were
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4233 passed to that primitive. For example, if you do
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4234 (file-exists-p FILENAME)
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4235 and FILENAME is handled by HANDLER, then HANDLER is called like this:
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4236 (funcall HANDLER 'file-exists-p FILENAME)
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4237 The function `find-file-name-handler' checks this list for a handler
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4238 for its argument.
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4239 */ );
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4240 Vfile_name_handler_alist = Qnil;
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4241
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4242 DEFVAR_LISP ("after-insert-file-functions", &Vafter_insert_file_functions /*
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4243 A list of functions to be called at the end of `insert-file-contents'.
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4244 Each is passed one argument, the number of bytes inserted. It should return
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4245 the new byte count, and leave point the same. If `insert-file-contents' is
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4246 intercepted by a handler from `file-name-handler-alist', that handler is
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4247 responsible for calling the after-insert-file-functions if appropriate.
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4248 */ );
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4249 Vafter_insert_file_functions = Qnil;
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4250
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4251 DEFVAR_LISP ("write-region-annotate-functions",
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4252 &Vwrite_region_annotate_functions /*
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4253 A list of functions to be called at the start of `write-region'.
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183
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4254 Each is passed two arguments, START and END, as for `write-region'.
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0
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4255 It should return a list of pairs (POSITION . STRING) of strings to be
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4256 effectively inserted at the specified positions of the file being written
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4257 \(1 means to insert before the first byte written). The POSITIONs must be
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4258 sorted into increasing order. If there are several functions in the list,
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4259 the several lists are merged destructively.
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4260 */ );
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4261 Vwrite_region_annotate_functions = Qnil;
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4262
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4263 DEFVAR_LISP ("write-region-annotations-so-far",
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4264 &Vwrite_region_annotations_so_far /*
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4265 When an annotation function is called, this holds the previous annotations.
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4266 These are the annotations made by other annotation functions
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4267 that were already called. See also `write-region-annotate-functions'.
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4268 */ );
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4269 Vwrite_region_annotations_so_far = Qnil;
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4270
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4271 DEFVAR_LISP ("inhibit-file-name-handlers", &Vinhibit_file_name_handlers /*
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4272 A list of file name handlers that temporarily should not be used.
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4273 This applies only to the operation `inhibit-file-name-operation'.
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4274 */ );
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4275 Vinhibit_file_name_handlers = Qnil;
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4276
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4277 DEFVAR_LISP ("inhibit-file-name-operation", &Vinhibit_file_name_operation /*
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4278 The operation for which `inhibit-file-name-handlers' is applicable.
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4279 */ );
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4280 Vinhibit_file_name_operation = Qnil;
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4281
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4282 DEFVAR_LISP ("auto-save-list-file-name", &Vauto_save_list_file_name /*
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4283 File name in which we write a list of all auto save file names.
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4284 */ );
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4285 Vauto_save_list_file_name = Qnil;
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4286
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4287 DEFVAR_BOOL ("disable-auto-save-when-buffer-shrinks",
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4288 &disable_auto_save_when_buffer_shrinks /*
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4289 If non-nil, auto-saving is disabled when a buffer shrinks too much.
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4290 This is to prevent you from losing your edits if you accidentally
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4291 delete a large chunk of the buffer and don't notice it until too late.
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4292 Saving the buffer normally turns auto-save back on.
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4293 */ );
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4294 disable_auto_save_when_buffer_shrinks = 1;
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235
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4295
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278
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4296 DEFVAR_LISP ("path-separator", &Vpath_separator /*
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4297 *Directory separator string for built-in functions that return file names.
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4298 The value should be either \"/\" or \"\\\".
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211
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4299 */ );
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278
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4300 Vpath_separator = build_string("X");
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4301 (XSTRING_DATA (Vpath_separator))[0] = DIRECTORY_SEP;
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0
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4302 }
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