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428
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1 /* File IO for XEmacs.
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2 Copyright (C) 1985-1988, 1992-1995 Free Software Foundation, Inc.
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3 Copyright (C) 1996 Ben Wing.
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4
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5 This file is part of XEmacs.
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6
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7 XEmacs is free software; you can redistribute it and/or modify it
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8 under the terms of the GNU General Public License as published by the
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9 Free Software Foundation; either version 2, or (at your option) any
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10 later version.
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11
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12 XEmacs is distributed in the hope that it will be useful, but WITHOUT
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13 ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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14 FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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15 for more details.
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16
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17 You should have received a copy of the GNU General Public License
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18 along with XEmacs; see the file COPYING. If not, write to
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19 the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
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20 Boston, MA 02111-1307, USA. */
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21
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22 /* Synched up with: Mule 2.0, FSF 19.30. */
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23 /* More syncing: FSF Emacs 19.34.6 by Marc Paquette <marcpa@cam.org> */
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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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27
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28 #include "buffer.h"
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29 #include "events.h"
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30 #include "frame.h"
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31 #include "insdel.h"
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32 #include "lstream.h"
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33 #include "redisplay.h"
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34 #include "sysdep.h"
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35 #include "window.h" /* minibuf_level */
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36 #ifdef FILE_CODING
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37 #include "file-coding.h"
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38 #endif
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39
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40 #ifdef HAVE_LIBGEN_H /* Must come before sysfile.h */
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41 #include <libgen.h>
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42 #endif
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43 #include "sysfile.h"
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44 #include "sysproc.h"
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45 #include "syspwd.h"
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46 #include "systime.h"
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47 #include "sysdir.h"
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48
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49 #ifdef HPUX
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50 #include <netio.h>
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51 #ifdef HPUX_PRE_8_0
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52 #include <errnet.h>
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53 #endif /* HPUX_PRE_8_0 */
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54 #endif /* HPUX */
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55
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442
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56 #ifdef WIN32_NATIVE
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428
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57 #define IS_DRIVE(x) isalpha (x)
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58 /* Need to lower-case the drive letter, or else expanded
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59 filenames will sometimes compare inequal, because
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60 `expand-file-name' doesn't always down-case the drive letter. */
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61 #define DRIVE_LETTER(x) tolower (x)
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442
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62 #endif /* WIN32_NATIVE */
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428
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63
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64 int lisp_to_time (Lisp_Object, time_t *);
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65 Lisp_Object time_to_lisp (time_t);
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66
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67 /* Nonzero during writing of auto-save files */
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68 static int auto_saving;
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69
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70 /* Set by auto_save_1 to mode of original file so Fwrite_region_internal
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71 will create a new file with the same mode as the original */
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72 static int auto_save_mode_bits;
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73
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74 /* Alist of elements (REGEXP . HANDLER) for file names
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75 whose I/O is done with a special handler. */
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76 Lisp_Object Vfile_name_handler_alist;
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77
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78 /* Format for auto-save files */
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79 Lisp_Object Vauto_save_file_format;
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80
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81 /* Lisp functions for translating file formats */
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82 Lisp_Object Qformat_decode, Qformat_annotate_function;
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83
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84 /* Functions to be called to process text properties in inserted file. */
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85 Lisp_Object Vafter_insert_file_functions;
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86
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87 /* Functions to be called to create text property annotations for file. */
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88 Lisp_Object Vwrite_region_annotate_functions;
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89
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90 /* During build_annotations, each time an annotation function is called,
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91 this holds the annotations made by the previous functions. */
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92 Lisp_Object Vwrite_region_annotations_so_far;
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93
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94 /* File name in which we write a list of all our auto save files. */
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95 Lisp_Object Vauto_save_list_file_name;
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96
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444
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97 /* Prefix used to construct Vauto_save_list_file_name. */
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98 Lisp_Object Vauto_save_list_file_prefix;
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99
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100 /* When non-nil, it prevents auto-save list file creation. */
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101 int inhibit_auto_save_session;
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102
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428
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103 int disable_auto_save_when_buffer_shrinks;
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104
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105 Lisp_Object Vdirectory_sep_char;
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106
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107 /* These variables describe handlers that have "already" had a chance
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108 to handle the current operation.
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109
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110 Vinhibit_file_name_handlers is a list of file name handlers.
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111 Vinhibit_file_name_operation is the operation being handled.
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112 If we try to handle that operation, we ignore those handlers. */
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113
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114 static Lisp_Object Vinhibit_file_name_handlers;
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115 static Lisp_Object Vinhibit_file_name_operation;
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116
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117 Lisp_Object Qfile_error, Qfile_already_exists;
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118
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119 Lisp_Object Qauto_save_hook;
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120 Lisp_Object Qauto_save_error;
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121 Lisp_Object Qauto_saving;
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122
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123 Lisp_Object Qcar_less_than_car;
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124
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125 Lisp_Object Qcompute_buffer_file_truename;
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126
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127 EXFUN (Frunning_temacs_p, 0);
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128
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129 /* signal a file error when errno contains a meaningful value. */
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130
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131 DOESNT_RETURN
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442
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132 report_file_error (const char *string, Lisp_Object data)
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428
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133 {
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134 /* #### dmoore - This uses current_buffer, better make sure no one
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135 has GC'd the current buffer. File handlers are giving me a headache
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136 maybe I'll just always protect current_buffer around all of those
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137 calls. */
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138
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139 signal_error (Qfile_error,
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140 Fcons (build_translated_string (string),
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141 Fcons (lisp_strerror (errno), data)));
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142 }
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143
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144 void
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442
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145 maybe_report_file_error (const char *string, Lisp_Object data,
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428
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146 Lisp_Object class, Error_behavior errb)
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147 {
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148 /* Optimization: */
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149 if (ERRB_EQ (errb, ERROR_ME_NOT))
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150 return;
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151
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152 maybe_signal_error (Qfile_error,
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153 Fcons (build_translated_string (string),
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154 Fcons (lisp_strerror (errno), data)),
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155 class, errb);
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156 }
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157
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158 /* signal a file error when errno does not contain a meaningful value. */
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159
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160 DOESNT_RETURN
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442
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161 signal_file_error (const char *string, Lisp_Object data)
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428
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162 {
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163 signal_error (Qfile_error,
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164 list2 (build_translated_string (string), data));
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165 }
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166
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167 void
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442
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168 maybe_signal_file_error (const char *string, Lisp_Object data,
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428
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169 Lisp_Object class, Error_behavior errb)
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170 {
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171 /* Optimization: */
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172 if (ERRB_EQ (errb, ERROR_ME_NOT))
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173 return;
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174 maybe_signal_error (Qfile_error,
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175 list2 (build_translated_string (string), data),
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176 class, errb);
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177 }
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178
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179 DOESNT_RETURN
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442
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180 signal_double_file_error (const char *string1, const char *string2,
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428
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181 Lisp_Object data)
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182 {
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183 signal_error (Qfile_error,
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184 list3 (build_translated_string (string1),
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185 build_translated_string (string2),
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186 data));
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187 }
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188
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189 void
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442
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190 maybe_signal_double_file_error (const char *string1, const char *string2,
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428
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191 Lisp_Object data, Lisp_Object class,
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192 Error_behavior errb)
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193 {
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194 /* Optimization: */
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195 if (ERRB_EQ (errb, ERROR_ME_NOT))
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196 return;
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197 maybe_signal_error (Qfile_error,
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198 list3 (build_translated_string (string1),
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199 build_translated_string (string2),
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200 data),
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201 class, errb);
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202 }
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203
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204 DOESNT_RETURN
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442
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205 signal_double_file_error_2 (const char *string1, const char *string2,
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428
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206 Lisp_Object data1, Lisp_Object data2)
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207 {
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208 signal_error (Qfile_error,
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209 list4 (build_translated_string (string1),
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210 build_translated_string (string2),
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211 data1, data2));
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212 }
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213
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214 void
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442
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215 maybe_signal_double_file_error_2 (const char *string1, const char *string2,
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428
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216 Lisp_Object data1, Lisp_Object data2,
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217 Lisp_Object class, Error_behavior errb)
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218 {
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219 /* Optimization: */
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220 if (ERRB_EQ (errb, ERROR_ME_NOT))
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221 return;
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222 maybe_signal_error (Qfile_error,
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223 list4 (build_translated_string (string1),
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224 build_translated_string (string2),
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225 data1, data2),
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226 class, errb);
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227 }
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228
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229
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230 /* Just like strerror(3), except return a lisp string instead of char *.
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231 The string needs to be converted since it may be localized.
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232 Perhaps this should use strerror-coding-system instead? */
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233 Lisp_Object
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234 lisp_strerror (int errnum)
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235 {
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440
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236 return build_ext_string (strerror (errnum), Qnative);
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428
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237 }
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238
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239 static Lisp_Object
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240 close_file_unwind (Lisp_Object fd)
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241 {
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242 if (CONSP (fd))
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243 {
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244 if (INTP (XCAR (fd)))
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245 close (XINT (XCAR (fd)));
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246
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247 free_cons (XCONS (fd));
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248 }
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249 else
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250 close (XINT (fd));
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251
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252 return Qnil;
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253 }
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254
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255 static Lisp_Object
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256 delete_stream_unwind (Lisp_Object stream)
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257 {
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258 Lstream_delete (XLSTREAM (stream));
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259 return Qnil;
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260 }
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261
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262 /* Restore point, having saved it as a marker. */
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263
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264 static Lisp_Object
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265 restore_point_unwind (Lisp_Object point_marker)
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266 {
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267 BUF_SET_PT (current_buffer, marker_position (point_marker));
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268 return Fset_marker (point_marker, Qnil, Qnil);
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269 }
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270
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271 /* Versions of read() and write() that allow quitting out of the actual
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272 I/O. We don't use immediate_quit (i.e. direct longjmp() out of the
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273 signal handler) because that's way too losing.
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274
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275 (#### Actually, longjmp()ing out of the signal handler may not be
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276 as losing as I thought. See sys_do_signal() in sysdep.c.) */
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277
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278 ssize_t
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279 read_allowing_quit (int fildes, void *buf, size_t size)
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280 {
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281 QUIT;
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282 return sys_read_1 (fildes, buf, size, 1);
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283 }
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284
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285 ssize_t
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442
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286 write_allowing_quit (int fildes, const void *buf, size_t size)
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428
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287 {
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288 QUIT;
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289 return sys_write_1 (fildes, buf, size, 1);
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290 }
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291
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292
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293 Lisp_Object Qexpand_file_name;
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294 Lisp_Object Qfile_truename;
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295 Lisp_Object Qsubstitute_in_file_name;
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296 Lisp_Object Qdirectory_file_name;
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297 Lisp_Object Qfile_name_directory;
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298 Lisp_Object Qfile_name_nondirectory;
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299 Lisp_Object Qunhandled_file_name_directory;
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300 Lisp_Object Qfile_name_as_directory;
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301 Lisp_Object Qcopy_file;
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302 Lisp_Object Qmake_directory_internal;
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303 Lisp_Object Qdelete_directory;
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304 Lisp_Object Qdelete_file;
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305 Lisp_Object Qrename_file;
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306 Lisp_Object Qadd_name_to_file;
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307 Lisp_Object Qmake_symbolic_link;
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308 Lisp_Object Qfile_exists_p;
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309 Lisp_Object Qfile_executable_p;
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310 Lisp_Object Qfile_readable_p;
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311 Lisp_Object Qfile_symlink_p;
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312 Lisp_Object Qfile_writable_p;
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313 Lisp_Object Qfile_directory_p;
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314 Lisp_Object Qfile_regular_p;
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315 Lisp_Object Qfile_accessible_directory_p;
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316 Lisp_Object Qfile_modes;
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317 Lisp_Object Qset_file_modes;
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318 Lisp_Object Qfile_newer_than_file_p;
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319 Lisp_Object Qinsert_file_contents;
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320 Lisp_Object Qwrite_region;
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321 Lisp_Object Qverify_visited_file_modtime;
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322 Lisp_Object Qset_visited_file_modtime;
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323
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324 /* If FILENAME is handled specially on account of its syntax,
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325 return its handler function. Otherwise, return nil. */
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326
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327 DEFUN ("find-file-name-handler", Ffind_file_name_handler, 1, 2, 0, /*
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328 Return FILENAME's handler function for OPERATION, if it has one.
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329 Otherwise, return nil.
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330 A file name is handled if one of the regular expressions in
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331 `file-name-handler-alist' matches it.
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332
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333 If OPERATION equals `inhibit-file-name-operation', then we ignore
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334 any handlers that are members of `inhibit-file-name-handlers',
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335 but we still do run any other handlers. This lets handlers
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336 use the standard functions without calling themselves recursively.
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337 */
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338 (filename, operation))
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339 {
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340 /* This function does not GC */
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341 /* This function can be called during GC */
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342 /* This function must not munge the match data. */
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343 Lisp_Object chain, inhibited_handlers;
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344
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345 CHECK_STRING (filename);
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346
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347 if (EQ (operation, Vinhibit_file_name_operation))
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348 inhibited_handlers = Vinhibit_file_name_handlers;
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349 else
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350 inhibited_handlers = Qnil;
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351
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352 EXTERNAL_LIST_LOOP (chain, Vfile_name_handler_alist)
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353 {
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354 Lisp_Object elt = XCAR (chain);
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355 if (CONSP (elt))
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356 {
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357 Lisp_Object string = XCAR (elt);
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358 if (STRINGP (string)
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359 && (fast_lisp_string_match (string, filename) >= 0))
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360 {
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361 Lisp_Object handler = XCDR (elt);
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362 if (NILP (Fmemq (handler, inhibited_handlers)))
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363 return handler;
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364 }
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365 }
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366 QUIT;
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367 }
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368 return Qnil;
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369 }
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370
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371 static Lisp_Object
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372 call2_check_string (Lisp_Object fn, Lisp_Object arg0, Lisp_Object arg1)
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373 {
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374 /* This function can call lisp */
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375 Lisp_Object result = call2 (fn, arg0, arg1);
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376 CHECK_STRING (result);
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377 return result;
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378 }
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379
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380 static Lisp_Object
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381 call2_check_string_or_nil (Lisp_Object fn, Lisp_Object arg0, Lisp_Object arg1)
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382 {
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383 /* This function can call lisp */
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384 Lisp_Object result = call2 (fn, arg0, arg1);
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385 if (!NILP (result))
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386 CHECK_STRING (result);
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387 return result;
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388 }
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389
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390 static Lisp_Object
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391 call3_check_string (Lisp_Object fn, Lisp_Object arg0,
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|
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392 Lisp_Object arg1, Lisp_Object arg2)
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393 {
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394 /* This function can call lisp */
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395 Lisp_Object result = call3 (fn, arg0, arg1, arg2);
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|
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396 CHECK_STRING (result);
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|
397 return result;
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|
|
398 }
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|
|
399
|
|
|
400
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|
|
401 DEFUN ("file-name-directory", Ffile_name_directory, 1, 1, 0, /*
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|
444
|
402 Return the directory component in file name FILENAME.
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|
|
403 Return nil if FILENAME does not include a directory.
|
|
428
|
404 Otherwise return a directory spec.
|
|
|
405 Given a Unix syntax file name, returns a string ending in slash.
|
|
|
406 */
|
|
444
|
407 (filename))
|
|
428
|
408 {
|
|
442
|
409 /* This function can GC. GC checked 2000-07-28 ben */
|
|
428
|
410 Bufbyte *beg;
|
|
|
411 Bufbyte *p;
|
|
|
412 Lisp_Object handler;
|
|
|
413
|
|
444
|
414 CHECK_STRING (filename);
|
|
428
|
415
|
|
|
416 /* If the file name has special constructs in it,
|
|
|
417 call the corresponding file handler. */
|
|
444
|
418 handler = Ffind_file_name_handler (filename, Qfile_name_directory);
|
|
428
|
419 if (!NILP (handler))
|
|
444
|
420 return call2_check_string_or_nil (handler, Qfile_name_directory, filename);
|
|
428
|
421
|
|
|
422 #ifdef FILE_SYSTEM_CASE
|
|
444
|
423 filename = FILE_SYSTEM_CASE (filename);
|
|
428
|
424 #endif
|
|
444
|
425 beg = XSTRING_DATA (filename);
|
|
|
426 p = beg + XSTRING_LENGTH (filename);
|
|
428
|
427
|
|
|
428 while (p != beg && !IS_ANY_SEP (p[-1])
|
|
442
|
429 #ifdef WIN32_NATIVE
|
|
428
|
430 /* only recognize drive specifier at beginning */
|
|
|
431 && !(p[-1] == ':' && p == beg + 2)
|
|
|
432 #endif
|
|
|
433 ) p--;
|
|
|
434
|
|
|
435 if (p == beg)
|
|
|
436 return Qnil;
|
|
442
|
437 #ifdef WIN32_NATIVE
|
|
428
|
438 /* Expansion of "c:" to drive and default directory. */
|
|
|
439 /* (NT does the right thing.) */
|
|
|
440 if (p == beg + 2 && beg[1] == ':')
|
|
|
441 {
|
|
|
442 /* MAXPATHLEN+1 is guaranteed to be enough space for getdefdir. */
|
|
442
|
443 Bufbyte *res = (Bufbyte*) alloca (MAXPATHLEN + 1);
|
|
|
444 if (_getdcwd (toupper (*beg) - 'A' + 1, (char *)res, MAXPATHLEN))
|
|
428
|
445 {
|
|
|
446 char *c=((char *) res) + strlen ((char *) res);
|
|
|
447 if (!IS_DIRECTORY_SEP (*c))
|
|
|
448 {
|
|
|
449 *c++ = DIRECTORY_SEP;
|
|
|
450 *c = '\0';
|
|
|
451 }
|
|
|
452 beg = res;
|
|
|
453 p = beg + strlen ((char *) beg);
|
|
|
454 }
|
|
|
455 }
|
|
442
|
456 #endif /* WIN32_NATIVE */
|
|
428
|
457 return make_string (beg, p - beg);
|
|
|
458 }
|
|
|
459
|
|
|
460 DEFUN ("file-name-nondirectory", Ffile_name_nondirectory, 1, 1, 0, /*
|
|
444
|
461 Return file name FILENAME sans its directory.
|
|
428
|
462 For example, in a Unix-syntax file name,
|
|
|
463 this is everything after the last slash,
|
|
|
464 or the entire name if it contains no slash.
|
|
|
465 */
|
|
444
|
466 (filename))
|
|
428
|
467 {
|
|
442
|
468 /* This function can GC. GC checked 2000-07-28 ben */
|
|
428
|
469 Bufbyte *beg, *p, *end;
|
|
|
470 Lisp_Object handler;
|
|
|
471
|
|
444
|
472 CHECK_STRING (filename);
|
|
428
|
473
|
|
|
474 /* If the file name has special constructs in it,
|
|
|
475 call the corresponding file handler. */
|
|
444
|
476 handler = Ffind_file_name_handler (filename, Qfile_name_nondirectory);
|
|
428
|
477 if (!NILP (handler))
|
|
444
|
478 return call2_check_string (handler, Qfile_name_nondirectory, filename);
|
|
|
479
|
|
|
480 beg = XSTRING_DATA (filename);
|
|
|
481 end = p = beg + XSTRING_LENGTH (filename);
|
|
428
|
482
|
|
|
483 while (p != beg && !IS_ANY_SEP (p[-1])
|
|
442
|
484 #ifdef WIN32_NATIVE
|
|
428
|
485 /* only recognize drive specifier at beginning */
|
|
|
486 && !(p[-1] == ':' && p == beg + 2)
|
|
|
487 #endif
|
|
|
488 ) p--;
|
|
|
489
|
|
|
490 return make_string (p, end - p);
|
|
|
491 }
|
|
|
492
|
|
|
493 DEFUN ("unhandled-file-name-directory", Funhandled_file_name_directory, 1, 1, 0, /*
|
|
|
494 Return a directly usable directory name somehow associated with FILENAME.
|
|
|
495 A `directly usable' directory name is one that may be used without the
|
|
|
496 intervention of any file handler.
|
|
|
497 If FILENAME is a directly usable file itself, return
|
|
|
498 \(file-name-directory FILENAME).
|
|
|
499 The `call-process' and `start-process' functions use this function to
|
|
|
500 get a current directory to run processes in.
|
|
|
501 */
|
|
444
|
502 (filename))
|
|
428
|
503 {
|
|
442
|
504 /* This function can GC. GC checked 2000-07-28 ben */
|
|
428
|
505 Lisp_Object handler;
|
|
|
506
|
|
|
507 /* If the file name has special constructs in it,
|
|
|
508 call the corresponding file handler. */
|
|
|
509 handler = Ffind_file_name_handler (filename, Qunhandled_file_name_directory);
|
|
|
510 if (!NILP (handler))
|
|
|
511 return call2 (handler, Qunhandled_file_name_directory,
|
|
|
512 filename);
|
|
|
513
|
|
|
514 return Ffile_name_directory (filename);
|
|
|
515 }
|
|
|
516
|
|
|
517
|
|
|
518 static char *
|
|
|
519 file_name_as_directory (char *out, char *in)
|
|
|
520 {
|
|
442
|
521 /* This function cannot GC */
|
|
428
|
522 int size = strlen (in);
|
|
|
523
|
|
|
524 if (size == 0)
|
|
|
525 {
|
|
|
526 out[0] = '.';
|
|
|
527 out[1] = DIRECTORY_SEP;
|
|
|
528 out[2] = '\0';
|
|
|
529 }
|
|
|
530 else
|
|
|
531 {
|
|
|
532 strcpy (out, in);
|
|
|
533 /* Append a slash if necessary */
|
|
|
534 if (!IS_ANY_SEP (out[size-1]))
|
|
|
535 {
|
|
|
536 out[size] = DIRECTORY_SEP;
|
|
|
537 out[size + 1] = '\0';
|
|
|
538 }
|
|
|
539 }
|
|
|
540 return out;
|
|
|
541 }
|
|
|
542
|
|
|
543 DEFUN ("file-name-as-directory", Ffile_name_as_directory, 1, 1, 0, /*
|
|
|
544 Return a string representing file FILENAME interpreted as a directory.
|
|
|
545 This operation exists because a directory is also a file, but its name as
|
|
|
546 a directory is different from its name as a file.
|
|
|
547 The result can be used as the value of `default-directory'
|
|
|
548 or passed as second argument to `expand-file-name'.
|
|
|
549 For a Unix-syntax file name, just appends a slash,
|
|
|
550 except for (file-name-as-directory \"\") => \"./\".
|
|
|
551 */
|
|
444
|
552 (filename))
|
|
428
|
553 {
|
|
442
|
554 /* This function can GC. GC checked 2000-07-28 ben */
|
|
428
|
555 char *buf;
|
|
|
556 Lisp_Object handler;
|
|
|
557
|
|
444
|
558 CHECK_STRING (filename);
|
|
428
|
559
|
|
|
560 /* If the file name has special constructs in it,
|
|
|
561 call the corresponding file handler. */
|
|
444
|
562 handler = Ffind_file_name_handler (filename, Qfile_name_as_directory);
|
|
428
|
563 if (!NILP (handler))
|
|
444
|
564 return call2_check_string (handler, Qfile_name_as_directory, filename);
|
|
|
565
|
|
|
566 buf = (char *) alloca (XSTRING_LENGTH (filename) + 10);
|
|
428
|
567 return build_string (file_name_as_directory
|
|
444
|
568 (buf, (char *) XSTRING_DATA (filename)));
|
|
428
|
569 }
|
|
|
570
|
|
|
571 /*
|
|
|
572 * Convert from directory name to filename.
|
|
|
573 * On UNIX, it's simple: just make sure there isn't a terminating /
|
|
|
574 *
|
|
|
575 * Value is nonzero if the string output is different from the input.
|
|
|
576 */
|
|
|
577
|
|
|
578 static int
|
|
442
|
579 directory_file_name (const char *src, char *dst)
|
|
428
|
580 {
|
|
442
|
581 /* This function cannot GC */
|
|
440
|
582 long slen = strlen (src);
|
|
428
|
583 /* Process as Unix format: just remove any final slash.
|
|
|
584 But leave "/" unchanged; do not change it to "". */
|
|
|
585 strcpy (dst, src);
|
|
|
586 if (slen > 1
|
|
|
587 && IS_DIRECTORY_SEP (dst[slen - 1])
|
|
442
|
588 #ifdef WIN32_NATIVE
|
|
428
|
589 && !IS_ANY_SEP (dst[slen - 2])
|
|
442
|
590 #endif /* WIN32_NATIVE */
|
|
428
|
591 )
|
|
|
592 dst[slen - 1] = 0;
|
|
|
593 return 1;
|
|
|
594 }
|
|
|
595
|
|
|
596 DEFUN ("directory-file-name", Fdirectory_file_name, 1, 1, 0, /*
|
|
444
|
597 Return the file name of the directory named DIRECTORY.
|
|
|
598 This is the name of the file that holds the data for the directory.
|
|
428
|
599 This operation exists because a directory is also a file, but its name as
|
|
|
600 a directory is different from its name as a file.
|
|
|
601 In Unix-syntax, this function just removes the final slash.
|
|
|
602 */
|
|
|
603 (directory))
|
|
|
604 {
|
|
442
|
605 /* This function can GC. GC checked 2000-07-28 ben */
|
|
428
|
606 char *buf;
|
|
|
607 Lisp_Object handler;
|
|
|
608
|
|
|
609 CHECK_STRING (directory);
|
|
|
610
|
|
|
611 #if 0 /* #### WTF? */
|
|
|
612 if (NILP (directory))
|
|
|
613 return Qnil;
|
|
|
614 #endif
|
|
|
615
|
|
|
616 /* If the file name has special constructs in it,
|
|
|
617 call the corresponding file handler. */
|
|
|
618 handler = Ffind_file_name_handler (directory, Qdirectory_file_name);
|
|
|
619 if (!NILP (handler))
|
|
|
620 return call2_check_string (handler, Qdirectory_file_name, directory);
|
|
|
621 buf = (char *) alloca (XSTRING_LENGTH (directory) + 20);
|
|
|
622 directory_file_name ((char *) XSTRING_DATA (directory), buf);
|
|
|
623 return build_string (buf);
|
|
|
624 }
|
|
|
625
|
|
|
626 /* Fmake_temp_name used to be a simple wrapper around mktemp(), but it
|
|
|
627 proved too broken for our purposes (it supported only 26 or 62
|
|
|
628 unique names under some implementations). For example, this
|
|
|
629 arbitrary limit broke generation of Gnus Incoming* files.
|
|
|
630
|
|
|
631 This implementation is better than what one usually finds in libc.
|
|
|
632 --hniksic */
|
|
|
633
|
|
442
|
634 static unsigned int temp_name_rand;
|
|
|
635
|
|
428
|
636 DEFUN ("make-temp-name", Fmake_temp_name, 1, 1, 0, /*
|
|
442
|
637 Generate a temporary file name starting with PREFIX.
|
|
428
|
638 The Emacs process number forms part of the result, so there is no
|
|
|
639 danger of generating a name being used by another process.
|
|
|
640
|
|
|
641 In addition, this function makes an attempt to choose a name that
|
|
|
642 does not specify an existing file. To make this work, PREFIX should
|
|
|
643 be an absolute file name.
|
|
|
644 */
|
|
|
645 (prefix))
|
|
|
646 {
|
|
442
|
647 static const char tbl[64] =
|
|
|
648 {
|
|
428
|
649 'A','B','C','D','E','F','G','H',
|
|
|
650 'I','J','K','L','M','N','O','P',
|
|
|
651 'Q','R','S','T','U','V','W','X',
|
|
|
652 'Y','Z','a','b','c','d','e','f',
|
|
|
653 'g','h','i','j','k','l','m','n',
|
|
|
654 'o','p','q','r','s','t','u','v',
|
|
|
655 'w','x','y','z','0','1','2','3',
|
|
442
|
656 '4','5','6','7','8','9','-','_'
|
|
|
657 };
|
|
428
|
658
|
|
|
659 Lisp_Object val;
|
|
|
660 Bytecount len;
|
|
|
661 Bufbyte *p, *data;
|
|
|
662
|
|
|
663 CHECK_STRING (prefix);
|
|
|
664
|
|
|
665 /* I was tempted to apply Fexpand_file_name on PREFIX here, but it's
|
|
|
666 a bad idea because:
|
|
|
667
|
|
|
668 1) It might change the prefix, so the resulting string might not
|
|
|
669 begin with PREFIX. This violates the principle of least
|
|
|
670 surprise.
|
|
|
671
|
|
|
672 2) It breaks under many unforeseeable circumstances, such as with
|
|
|
673 the code that uses (make-temp-name "") instead of
|
|
|
674 (make-temp-name "./").
|
|
|
675
|
|
|
676 3) It might yield unexpected (to stat(2)) results in the presence
|
|
|
677 of EFS and file name handlers. */
|
|
|
678
|
|
|
679 len = XSTRING_LENGTH (prefix);
|
|
|
680 val = make_uninit_string (len + 6);
|
|
|
681 data = XSTRING_DATA (val);
|
|
|
682 memcpy (data, XSTRING_DATA (prefix), len);
|
|
|
683 p = data + len;
|
|
|
684
|
|
|
685 /* VAL is created by adding 6 characters to PREFIX. The first three
|
|
|
686 are the PID of this process, in base 64, and the second three are
|
|
442
|
687 a pseudo-random number seeded from process startup time. This
|
|
|
688 ensures 262144 unique file names per PID per PREFIX per machine. */
|
|
|
689
|
|
|
690 {
|
|
|
691 unsigned int pid = (unsigned int) getpid ();
|
|
|
692 *p++ = tbl[(pid >> 0) & 63];
|
|
|
693 *p++ = tbl[(pid >> 6) & 63];
|
|
|
694 *p++ = tbl[(pid >> 12) & 63];
|
|
|
695 }
|
|
428
|
696
|
|
|
697 /* Here we try to minimize useless stat'ing when this function is
|
|
|
698 invoked many times successively with the same PREFIX. We achieve
|
|
442
|
699 this by using a very pseudo-random number generator to generate
|
|
|
700 file names unique to this process, with a very long cycle. */
|
|
428
|
701
|
|
|
702 while (1)
|
|
|
703 {
|
|
|
704 struct stat ignored;
|
|
442
|
705
|
|
|
706 p[0] = tbl[(temp_name_rand >> 0) & 63];
|
|
|
707 p[1] = tbl[(temp_name_rand >> 6) & 63];
|
|
|
708 p[2] = tbl[(temp_name_rand >> 12) & 63];
|
|
428
|
709
|
|
|
710 /* Poor man's congruential RN generator. Replace with ++count
|
|
|
711 for debugging. */
|
|
442
|
712 temp_name_rand += 25229;
|
|
|
713 temp_name_rand %= 225307;
|
|
428
|
714
|
|
|
715 QUIT;
|
|
|
716
|
|
442
|
717 if (xemacs_stat ((const char *) data, &ignored) < 0)
|
|
428
|
718 {
|
|
|
719 /* We want to return only if errno is ENOENT. */
|
|
|
720 if (errno == ENOENT)
|
|
|
721 return val;
|
|
|
722
|
|
|
723 /* The error here is dubious, but there is little else we
|
|
|
724 can do. The alternatives are to return nil, which is
|
|
|
725 as bad as (and in many cases worse than) throwing the
|
|
|
726 error, or to ignore the error, which will likely result
|
|
|
727 in inflooping. */
|
|
|
728 report_file_error ("Cannot create temporary name for prefix",
|
|
|
729 list1 (prefix));
|
|
|
730 return Qnil; /* not reached */
|
|
|
731 }
|
|
|
732 }
|
|
|
733 }
|
|
|
734
|
|
|
735
|
|
|
736 DEFUN ("expand-file-name", Fexpand_file_name, 1, 2, 0, /*
|
|
|
737 Convert filename NAME to absolute, and canonicalize it.
|
|
|
738 Second arg DEFAULT-DIRECTORY is directory to start with if NAME is relative
|
|
|
739 (does not start with slash); if DEFAULT-DIRECTORY is nil or missing,
|
|
444
|
740 the current buffer's value of `default-directory' is used.
|
|
428
|
741 File name components that are `.' are removed, and
|
|
|
742 so are file name components followed by `..', along with the `..' itself;
|
|
|
743 note that these simplifications are done without checking the resulting
|
|
|
744 file names in the file system.
|
|
|
745 An initial `~/' expands to your home directory.
|
|
|
746 An initial `~USER/' expands to USER's home directory.
|
|
|
747 See also the function `substitute-in-file-name'.
|
|
|
748 */
|
|
|
749 (name, default_directory))
|
|
|
750 {
|
|
442
|
751 /* This function can GC. GC-checked 2000-07-11 ben */
|
|
428
|
752 Bufbyte *nm;
|
|
|
753
|
|
|
754 Bufbyte *newdir, *p, *o;
|
|
|
755 int tlen;
|
|
|
756 Bufbyte *target;
|
|
442
|
757 #ifdef WIN32_NATIVE
|
|
428
|
758 int drive = 0;
|
|
|
759 int collapse_newdir = 1;
|
|
|
760 #else
|
|
|
761 struct passwd *pw;
|
|
442
|
762 #endif /* WIN32_NATIVE */
|
|
428
|
763 int length;
|
|
|
764 Lisp_Object handler;
|
|
442
|
765 #ifdef CYGWIN
|
|
428
|
766 char *user;
|
|
|
767 #endif
|
|
442
|
768 struct gcpro gcpro1, gcpro2;
|
|
|
769
|
|
|
770 /* both of these get set below */
|
|
|
771 GCPRO2 (name, default_directory);
|
|
428
|
772
|
|
|
773 CHECK_STRING (name);
|
|
|
774
|
|
|
775 /* If the file name has special constructs in it,
|
|
|
776 call the corresponding file handler. */
|
|
|
777 handler = Ffind_file_name_handler (name, Qexpand_file_name);
|
|
|
778 if (!NILP (handler))
|
|
442
|
779 {
|
|
|
780 UNGCPRO;
|
|
|
781 return call3_check_string (handler, Qexpand_file_name, name,
|
|
|
782 default_directory);
|
|
|
783 }
|
|
428
|
784
|
|
|
785 /* Use the buffer's default-directory if DEFAULT_DIRECTORY is omitted. */
|
|
|
786 if (NILP (default_directory))
|
|
|
787 default_directory = current_buffer->directory;
|
|
|
788 if (! STRINGP (default_directory))
|
|
|
789 default_directory = build_string ("/");
|
|
|
790
|
|
|
791 if (!NILP (default_directory))
|
|
|
792 {
|
|
|
793 handler = Ffind_file_name_handler (default_directory, Qexpand_file_name);
|
|
|
794 if (!NILP (handler))
|
|
442
|
795 {
|
|
|
796 UNGCPRO;
|
|
|
797 return call3 (handler, Qexpand_file_name, name, default_directory);
|
|
|
798 }
|
|
428
|
799 }
|
|
|
800
|
|
|
801 o = XSTRING_DATA (default_directory);
|
|
|
802
|
|
|
803 /* Make sure DEFAULT_DIRECTORY is properly expanded.
|
|
|
804 It would be better to do this down below where we actually use
|
|
|
805 default_directory. Unfortunately, calling Fexpand_file_name recursively
|
|
|
806 could invoke GC, and the strings might be relocated. This would
|
|
|
807 be annoying because we have pointers into strings lying around
|
|
|
808 that would need adjusting, and people would add new pointers to
|
|
|
809 the code and forget to adjust them, resulting in intermittent bugs.
|
|
|
810 Putting this call here avoids all that crud.
|
|
|
811
|
|
|
812 The EQ test avoids infinite recursion. */
|
|
|
813 if (! NILP (default_directory) && !EQ (default_directory, name)
|
|
|
814 /* Save time in some common cases - as long as default_directory
|
|
|
815 is not relative, it can be canonicalized with name below (if it
|
|
|
816 is needed at all) without requiring it to be expanded now. */
|
|
442
|
817 #ifdef WIN32_NATIVE
|
|
|
818 /* Detect Windows file names with drive specifiers. */
|
|
428
|
819 && ! (IS_DRIVE (o[0]) && (IS_DEVICE_SEP (o[1]) && IS_DIRECTORY_SEP (o[2])))
|
|
|
820 /* Detect Windows file names in UNC format. */
|
|
|
821 && ! (IS_DIRECTORY_SEP (o[0]) && IS_DIRECTORY_SEP (o[1]))
|
|
|
822
|
|
442
|
823 #else /* not WIN32_NATIVE */
|
|
428
|
824
|
|
|
825 /* Detect Unix absolute file names (/... alone is not absolute on
|
|
442
|
826 Windows). */
|
|
428
|
827 && ! (IS_DIRECTORY_SEP (o[0]))
|
|
442
|
828 #endif /* not WIN32_NATIVE */
|
|
428
|
829 )
|
|
442
|
830
|
|
|
831 default_directory = Fexpand_file_name (default_directory, Qnil);
|
|
428
|
832
|
|
|
833 #ifdef FILE_SYSTEM_CASE
|
|
|
834 name = FILE_SYSTEM_CASE (name);
|
|
|
835 #endif
|
|
|
836
|
|
|
837 /* #### dmoore - this is ugly, clean this up. Looks like nm pointing
|
|
|
838 into name should be safe during all of this, though. */
|
|
|
839 nm = XSTRING_DATA (name);
|
|
|
840
|
|
442
|
841 #ifdef WIN32_NATIVE
|
|
428
|
842 /* We will force directory separators to be either all \ or /, so make
|
|
|
843 a local copy to modify, even if there ends up being no change. */
|
|
442
|
844 nm = strcpy ((char *)alloca (strlen ((char *)nm) + 1), (char *)nm);
|
|
428
|
845
|
|
|
846 /* Find and remove drive specifier if present; this makes nm absolute
|
|
|
847 even if the rest of the name appears to be relative. */
|
|
|
848 {
|
|
442
|
849 Bufbyte *colon = (Bufbyte *) strrchr ((char *)nm, ':');
|
|
428
|
850
|
|
|
851 if (colon)
|
|
|
852 /* Only recognize colon as part of drive specifier if there is a
|
|
|
853 single alphabetic character preceding the colon (and if the
|
|
|
854 character before the drive letter, if present, is a directory
|
|
|
855 separator); this is to support the remote system syntax used by
|
|
|
856 ange-ftp, and the "po:username" syntax for POP mailboxes. */
|
|
|
857 look_again:
|
|
|
858 if (nm == colon)
|
|
|
859 nm++;
|
|
|
860 else if (IS_DRIVE (colon[-1])
|
|
|
861 && (colon == nm + 1 || IS_DIRECTORY_SEP (colon[-2])))
|
|
|
862 {
|
|
|
863 drive = colon[-1];
|
|
|
864 nm = colon + 1;
|
|
|
865 }
|
|
|
866 else
|
|
|
867 {
|
|
|
868 while (--colon >= nm)
|
|
|
869 if (colon[0] == ':')
|
|
|
870 goto look_again;
|
|
|
871 }
|
|
|
872 }
|
|
|
873
|
|
|
874 /* If we see "c://somedir", we want to strip the first slash after the
|
|
|
875 colon when stripping the drive letter. Otherwise, this expands to
|
|
|
876 "//somedir". */
|
|
|
877 if (drive && IS_DIRECTORY_SEP (nm[0]) && IS_DIRECTORY_SEP (nm[1]))
|
|
|
878 nm++;
|
|
442
|
879 #endif /* WIN32_NATIVE */
|
|
428
|
880
|
|
|
881 /* If nm is absolute, look for /./ or /../ sequences; if none are
|
|
|
882 found, we can probably return right away. We will avoid allocating
|
|
|
883 a new string if name is already fully expanded. */
|
|
|
884 if (
|
|
|
885 IS_DIRECTORY_SEP (nm[0])
|
|
442
|
886 #ifdef WIN32_NATIVE
|
|
428
|
887 && (drive || IS_DIRECTORY_SEP (nm[1]))
|
|
|
888 #endif
|
|
|
889 )
|
|
|
890 {
|
|
|
891 /* If it turns out that the filename we want to return is just a
|
|
|
892 suffix of FILENAME, we don't need to go through and edit
|
|
|
893 things; we just need to construct a new string using data
|
|
|
894 starting at the middle of FILENAME. If we set lose to a
|
|
|
895 non-zero value, that means we've discovered that we can't do
|
|
|
896 that cool trick. */
|
|
|
897 int lose = 0;
|
|
|
898
|
|
|
899 p = nm;
|
|
|
900 while (*p)
|
|
|
901 {
|
|
|
902 /* Since we know the name is absolute, we can assume that each
|
|
|
903 element starts with a "/". */
|
|
|
904
|
|
|
905 /* "." and ".." are hairy. */
|
|
|
906 if (IS_DIRECTORY_SEP (p[0])
|
|
|
907 && p[1] == '.'
|
|
|
908 && (IS_DIRECTORY_SEP (p[2])
|
|
|
909 || p[2] == 0
|
|
|
910 || (p[2] == '.' && (IS_DIRECTORY_SEP (p[3])
|
|
|
911 || p[3] == 0))))
|
|
|
912 lose = 1;
|
|
|
913 p++;
|
|
|
914 }
|
|
|
915 if (!lose)
|
|
|
916 {
|
|
442
|
917 #ifdef WIN32_NATIVE
|
|
428
|
918 /* Make sure directories are all separated with / or \ as
|
|
|
919 desired, but avoid allocation of a new string when not
|
|
|
920 required. */
|
|
|
921 CORRECT_DIR_SEPS (nm);
|
|
|
922 if (IS_DIRECTORY_SEP (nm[1]))
|
|
|
923 {
|
|
|
924 if (strcmp (nm, XSTRING_DATA (name)) != 0)
|
|
|
925 name = build_string (nm);
|
|
|
926 }
|
|
|
927 /* drive must be set, so this is okay */
|
|
|
928 else if (strcmp (nm - 2, XSTRING_DATA (name)) != 0)
|
|
|
929 {
|
|
|
930 name = make_string (nm - 2, p - nm + 2);
|
|
|
931 XSTRING_DATA (name)[0] = DRIVE_LETTER (drive);
|
|
|
932 XSTRING_DATA (name)[1] = ':';
|
|
|
933 }
|
|
442
|
934 RETURN_UNGCPRO (name);
|
|
|
935 #else /* not WIN32_NATIVE */
|
|
428
|
936 if (nm == XSTRING_DATA (name))
|
|
442
|
937 RETURN_UNGCPRO (name);
|
|
|
938 RETURN_UNGCPRO (build_string ((char *) nm));
|
|
|
939 #endif /* not WIN32_NATIVE */
|
|
428
|
940 }
|
|
|
941 }
|
|
|
942
|
|
|
943 /* At this point, nm might or might not be an absolute file name. We
|
|
|
944 need to expand ~ or ~user if present, otherwise prefix nm with
|
|
|
945 default_directory if nm is not absolute, and finally collapse /./
|
|
|
946 and /foo/../ sequences.
|
|
|
947
|
|
|
948 We set newdir to be the appropriate prefix if one is needed:
|
|
|
949 - the relevant user directory if nm starts with ~ or ~user
|
|
|
950 - the specified drive's working dir (DOS/NT only) if nm does not
|
|
|
951 start with /
|
|
|
952 - the value of default_directory.
|
|
|
953
|
|
|
954 Note that these prefixes are not guaranteed to be absolute (except
|
|
|
955 for the working dir of a drive). Therefore, to ensure we always
|
|
|
956 return an absolute name, if the final prefix is not absolute we
|
|
|
957 append it to the current working directory. */
|
|
|
958
|
|
|
959 newdir = 0;
|
|
|
960
|
|
|
961 if (nm[0] == '~') /* prefix ~ */
|
|
|
962 {
|
|
|
963 if (IS_DIRECTORY_SEP (nm[1])
|
|
|
964 || nm[1] == 0) /* ~ by itself */
|
|
|
965 {
|
|
440
|
966 Extbyte *newdir_external = get_home_directory ();
|
|
428
|
967
|
|
|
968 if (newdir_external == NULL)
|
|
|
969 newdir = (Bufbyte *) "";
|
|
|
970 else
|
|
440
|
971 TO_INTERNAL_FORMAT (C_STRING, newdir_external,
|
|
|
972 C_STRING_ALLOCA, (* ((char **) &newdir)),
|
|
|
973 Qfile_name);
|
|
428
|
974
|
|
|
975 nm++;
|
|
442
|
976 #ifdef WIN32_NATIVE
|
|
428
|
977 collapse_newdir = 0;
|
|
|
978 #endif
|
|
|
979 }
|
|
|
980 else /* ~user/filename */
|
|
|
981 {
|
|
|
982 for (p = nm; *p && (!IS_DIRECTORY_SEP (*p)); p++)
|
|
|
983 DO_NOTHING;
|
|
|
984 o = (Bufbyte *) alloca (p - nm + 1);
|
|
|
985 memcpy (o, (char *) nm, p - nm);
|
|
|
986 o [p - nm] = 0;
|
|
|
987
|
|
|
988 /* #### marcpa's syncing note: FSF uses getpwnam even on NT,
|
|
|
989 which does not work. The following works only if ~USER
|
|
|
990 names the user who runs this instance of XEmacs. While
|
|
|
991 NT is single-user (for the moment) you still can have
|
|
|
992 multiple user profiles users defined, each with its HOME.
|
|
|
993 Therefore, the following should be reworked to handle
|
|
|
994 this case. */
|
|
442
|
995 #ifdef WIN32_NATIVE
|
|
428
|
996 /* Now if the file given is "~foo/file" and HOME="c:/", then
|
|
|
997 we want the file to be named "c:/file" ("~foo" becomes
|
|
|
998 "c:/"). The variable o has "~foo", so we can use the
|
|
|
999 length of that string to offset nm. August Hill, 31 Aug
|
|
|
1000 1998. */
|
|
|
1001 newdir = (Bufbyte *) get_home_directory();
|
|
|
1002 dostounix_filename (newdir);
|
|
|
1003 nm += strlen(o) + 1;
|
|
442
|
1004 #else /* not WIN32_NATIVE */
|
|
|
1005 #ifdef CYGWIN
|
|
428
|
1006 if ((user = user_login_name (NULL)) != NULL)
|
|
|
1007 {
|
|
|
1008 /* Does the user login name match the ~name? */
|
|
|
1009 if (strcmp (user, (char *) o + 1) == 0)
|
|
|
1010 {
|
|
|
1011 newdir = (Bufbyte *) get_home_directory();
|
|
|
1012 nm = p;
|
|
|
1013 }
|
|
|
1014 }
|
|
|
1015 if (! newdir)
|
|
|
1016 {
|
|
442
|
1017 #endif /* CYGWIN */
|
|
428
|
1018 /* Jamie reports that getpwnam() can get wedged by SIGIO/SIGALARM
|
|
|
1019 occurring in it. (It can call select()). */
|
|
|
1020 slow_down_interrupts ();
|
|
|
1021 pw = (struct passwd *) getpwnam ((char *) o + 1);
|
|
|
1022 speed_up_interrupts ();
|
|
|
1023 if (pw)
|
|
|
1024 {
|
|
|
1025 newdir = (Bufbyte *) pw -> pw_dir;
|
|
|
1026 nm = p;
|
|
|
1027 }
|
|
442
|
1028 #ifdef CYGWIN
|
|
428
|
1029 }
|
|
|
1030 #endif
|
|
442
|
1031 #endif /* not WIN32_NATIVE */
|
|
428
|
1032
|
|
|
1033 /* If we don't find a user of that name, leave the name
|
|
|
1034 unchanged; don't move nm forward to p. */
|
|
|
1035 }
|
|
|
1036 }
|
|
|
1037
|
|
442
|
1038 #ifdef WIN32_NATIVE
|
|
428
|
1039 /* On DOS and Windows, nm is absolute if a drive name was specified;
|
|
|
1040 use the drive's current directory as the prefix if needed. */
|
|
|
1041 if (!newdir && drive)
|
|
|
1042 {
|
|
|
1043 /* Get default directory if needed to make nm absolute. */
|
|
|
1044 if (!IS_DIRECTORY_SEP (nm[0]))
|
|
|
1045 {
|
|
|
1046 newdir = alloca (MAXPATHLEN + 1);
|
|
442
|
1047 if (!_getdcwd (toupper (drive) - 'A' + 1, newdir, MAXPATHLEN))
|
|
428
|
1048 newdir = NULL;
|
|
|
1049 }
|
|
|
1050 if (!newdir)
|
|
|
1051 {
|
|
|
1052 /* Either nm starts with /, or drive isn't mounted. */
|
|
|
1053 newdir = alloca (4);
|
|
|
1054 newdir[0] = DRIVE_LETTER (drive);
|
|
|
1055 newdir[1] = ':';
|
|
|
1056 newdir[2] = '/';
|
|
|
1057 newdir[3] = 0;
|
|
|
1058 }
|
|
|
1059 }
|
|
442
|
1060 #endif /* WIN32_NATIVE */
|
|
428
|
1061
|
|
|
1062 /* Finally, if no prefix has been specified and nm is not absolute,
|
|
|
1063 then it must be expanded relative to default_directory. */
|
|
|
1064
|
|
|
1065 if (1
|
|
442
|
1066 #ifndef WIN32_NATIVE
|
|
428
|
1067 /* /... alone is not absolute on DOS and Windows. */
|
|
|
1068 && !IS_DIRECTORY_SEP (nm[0])
|
|
|
1069 #else
|
|
|
1070 && !(IS_DIRECTORY_SEP (nm[0]) && IS_DIRECTORY_SEP (nm[1]))
|
|
|
1071 #endif
|
|
|
1072 && !newdir)
|
|
|
1073 {
|
|
|
1074 newdir = XSTRING_DATA (default_directory);
|
|
|
1075 }
|
|
|
1076
|
|
442
|
1077 #ifdef WIN32_NATIVE
|
|
428
|
1078 if (newdir)
|
|
|
1079 {
|
|
|
1080 /* First ensure newdir is an absolute name. */
|
|
|
1081 if (
|
|
442
|
1082 /* Detect Windows file names with drive specifiers. */
|
|
428
|
1083 ! (IS_DRIVE (newdir[0])
|
|
|
1084 && IS_DEVICE_SEP (newdir[1]) && IS_DIRECTORY_SEP (newdir[2]))
|
|
|
1085 /* Detect Windows file names in UNC format. */
|
|
|
1086 && ! (IS_DIRECTORY_SEP (newdir[0]) && IS_DIRECTORY_SEP (newdir[1]))
|
|
|
1087 /* Detect drive spec by itself */
|
|
|
1088 && ! (IS_DEVICE_SEP (newdir[1]) && newdir[2] == 0)
|
|
|
1089 )
|
|
|
1090 {
|
|
|
1091 /* Effectively, let newdir be (expand-file-name newdir cwd).
|
|
|
1092 Because of the admonition against calling expand-file-name
|
|
|
1093 when we have pointers into lisp strings, we accomplish this
|
|
|
1094 indirectly by prepending newdir to nm if necessary, and using
|
|
|
1095 cwd (or the wd of newdir's drive) as the new newdir. */
|
|
|
1096
|
|
|
1097 if (IS_DRIVE (newdir[0]) && newdir[1] == ':')
|
|
|
1098 {
|
|
|
1099 drive = newdir[0];
|
|
|
1100 newdir += 2;
|
|
|
1101 }
|
|
|
1102 if (!IS_DIRECTORY_SEP (nm[0]))
|
|
|
1103 {
|
|
|
1104 char * tmp = alloca (strlen (newdir) + strlen (nm) + 2);
|
|
|
1105 file_name_as_directory (tmp, newdir);
|
|
|
1106 strcat (tmp, nm);
|
|
|
1107 nm = tmp;
|
|
|
1108 }
|
|
|
1109 newdir = alloca (MAXPATHLEN + 1);
|
|
|
1110 if (drive)
|
|
|
1111 {
|
|
442
|
1112 if (!_getdcwd (toupper (drive) - 'A' + 1, newdir, MAXPATHLEN))
|
|
428
|
1113 newdir = "/";
|
|
|
1114 }
|
|
|
1115 else
|
|
|
1116 getwd (newdir);
|
|
|
1117 }
|
|
|
1118
|
|
|
1119 /* Strip off drive name from prefix, if present. */
|
|
|
1120 if (IS_DRIVE (newdir[0]) && newdir[1] == ':')
|
|
|
1121 {
|
|
|
1122 drive = newdir[0];
|
|
|
1123 newdir += 2;
|
|
|
1124 }
|
|
|
1125
|
|
|
1126 /* Keep only a prefix from newdir if nm starts with slash
|
|
|
1127 (/ /server/share for UNC, nothing otherwise). */
|
|
|
1128 if (IS_DIRECTORY_SEP (nm[0]) && collapse_newdir)
|
|
|
1129 {
|
|
|
1130 if (IS_DIRECTORY_SEP (newdir[0]) && IS_DIRECTORY_SEP (newdir[1]))
|
|
|
1131 {
|
|
|
1132 newdir = strcpy (alloca (strlen (newdir) + 1), newdir);
|
|
|
1133 p = newdir + 2;
|
|
|
1134 while (*p && !IS_DIRECTORY_SEP (*p)) p++;
|
|
|
1135 p++;
|
|
|
1136 while (*p && !IS_DIRECTORY_SEP (*p)) p++;
|
|
|
1137 *p = 0;
|
|
|
1138 }
|
|
|
1139 else
|
|
|
1140 newdir = "";
|
|
|
1141 }
|
|
|
1142 }
|
|
442
|
1143 #endif /* WIN32_NATIVE */
|
|
428
|
1144
|
|
|
1145 if (newdir)
|
|
|
1146 {
|
|
|
1147 /* Get rid of any slash at the end of newdir, unless newdir is
|
|
|
1148 just // (an incomplete UNC name). */
|
|
|
1149 length = strlen ((char *) newdir);
|
|
|
1150 if (length > 1 && IS_DIRECTORY_SEP (newdir[length - 1])
|
|
442
|
1151 #ifdef WIN32_NATIVE
|
|
428
|
1152 && !(length == 2 && IS_DIRECTORY_SEP (newdir[0]))
|
|
|
1153 #endif
|
|
|
1154 )
|
|
|
1155 {
|
|
|
1156 Bufbyte *temp = (Bufbyte *) alloca (length);
|
|
|
1157 memcpy (temp, newdir, length - 1);
|
|
|
1158 temp[length - 1] = 0;
|
|
|
1159 newdir = temp;
|
|
|
1160 }
|
|
|
1161 tlen = length + 1;
|
|
|
1162 }
|
|
|
1163 else
|
|
|
1164 tlen = 0;
|
|
|
1165
|
|
|
1166 /* Now concatenate the directory and name to new space in the stack frame */
|
|
|
1167 tlen += strlen ((char *) nm) + 1;
|
|
442
|
1168 #ifdef WIN32_NATIVE
|
|
428
|
1169 /* Add reserved space for drive name. (The Microsoft x86 compiler
|
|
|
1170 produces incorrect code if the following two lines are combined.) */
|
|
|
1171 target = (Bufbyte *) alloca (tlen + 2);
|
|
|
1172 target += 2;
|
|
442
|
1173 #else /* not WIN32_NATIVE */
|
|
428
|
1174 target = (Bufbyte *) alloca (tlen);
|
|
442
|
1175 #endif /* not WIN32_NATIVE */
|
|
428
|
1176 *target = 0;
|
|
|
1177
|
|
|
1178 if (newdir)
|
|
|
1179 {
|
|
|
1180 if (nm[0] == 0 || IS_DIRECTORY_SEP (nm[0]))
|
|
|
1181 strcpy ((char *) target, (char *) newdir);
|
|
|
1182 else
|
|
|
1183 file_name_as_directory ((char *) target, (char *) newdir);
|
|
|
1184 }
|
|
|
1185
|
|
|
1186 strcat ((char *) target, (char *) nm);
|
|
|
1187
|
|
|
1188 /* ASSERT (IS_DIRECTORY_SEP (target[0])) if not VMS */
|
|
|
1189
|
|
|
1190 /* Now canonicalize by removing /. and /foo/.. if they appear. */
|
|
|
1191
|
|
|
1192 p = target;
|
|
|
1193 o = target;
|
|
|
1194
|
|
|
1195 while (*p)
|
|
|
1196 {
|
|
|
1197 if (!IS_DIRECTORY_SEP (*p))
|
|
|
1198 {
|
|
|
1199 *o++ = *p++;
|
|
|
1200 }
|
|
|
1201 else if (IS_DIRECTORY_SEP (p[0])
|
|
|
1202 && p[1] == '.'
|
|
|
1203 && (IS_DIRECTORY_SEP (p[2])
|
|
|
1204 || p[2] == 0))
|
|
|
1205 {
|
|
|
1206 /* If "/." is the entire filename, keep the "/". Otherwise,
|
|
|
1207 just delete the whole "/.". */
|
|
|
1208 if (o == target && p[2] == '\0')
|
|
|
1209 *o++ = *p;
|
|
|
1210 p += 2;
|
|
|
1211 }
|
|
|
1212 else if (IS_DIRECTORY_SEP (p[0]) && p[1] == '.' && p[2] == '.'
|
|
|
1213 /* `/../' is the "superroot" on certain file systems. */
|
|
|
1214 && o != target
|
|
|
1215 && (IS_DIRECTORY_SEP (p[3]) || p[3] == 0))
|
|
|
1216 {
|
|
|
1217 while (o != target && (--o) && !IS_DIRECTORY_SEP (*o))
|
|
|
1218 ;
|
|
|
1219 /* Keep initial / only if this is the whole name. */
|
|
|
1220 if (o == target && IS_ANY_SEP (*o) && p[3] == 0)
|
|
|
1221 ++o;
|
|
|
1222 p += 3;
|
|
|
1223 }
|
|
442
|
1224 #ifdef WIN32_NATIVE
|
|
428
|
1225 /* if drive is set, we're not dealing with an UNC, so
|
|
|
1226 multiple dir-seps are redundant (and reportedly cause trouble
|
|
|
1227 under win95) */
|
|
|
1228 else if (drive && IS_DIRECTORY_SEP (p[0]) && IS_DIRECTORY_SEP (p[1]))
|
|
|
1229 ++p;
|
|
|
1230 #endif
|
|
|
1231 else
|
|
|
1232 {
|
|
|
1233 *o++ = *p++;
|
|
|
1234 }
|
|
|
1235 }
|
|
|
1236
|
|
442
|
1237 #ifdef WIN32_NATIVE
|
|
428
|
1238 /* At last, set drive name, except for network file name. */
|
|
|
1239 if (drive)
|
|
|
1240 {
|
|
|
1241 target -= 2;
|
|
|
1242 target[0] = DRIVE_LETTER (drive);
|
|
|
1243 target[1] = ':';
|
|
|
1244 }
|
|
|
1245 else
|
|
|
1246 {
|
|
|
1247 assert (IS_DIRECTORY_SEP (target[0]) && IS_DIRECTORY_SEP (target[1]));
|
|
|
1248 }
|
|
|
1249 CORRECT_DIR_SEPS (target);
|
|
442
|
1250 #endif /* WIN32_NATIVE */
|
|
|
1251
|
|
|
1252 RETURN_UNGCPRO (make_string (target, o - target));
|
|
428
|
1253 }
|
|
|
1254
|
|
|
1255 DEFUN ("file-truename", Ffile_truename, 1, 2, 0, /*
|
|
444
|
1256 Return the canonical name of FILENAME.
|
|
|
1257 Second arg DEFAULT is directory to start with if FILENAME is relative
|
|
428
|
1258 (does not start with slash); if DEFAULT is nil or missing,
|
|
444
|
1259 the current buffer's value of `default-directory' is used.
|
|
428
|
1260 No component of the resulting pathname will be a symbolic link, as
|
|
|
1261 in the realpath() function.
|
|
|
1262 */
|
|
|
1263 (filename, default_))
|
|
|
1264 {
|
|
442
|
1265 /* This function can GC. GC checked 2000-07-28 ben. */
|
|
428
|
1266 Lisp_Object expanded_name;
|
|
|
1267 struct gcpro gcpro1;
|
|
|
1268
|
|
|
1269 CHECK_STRING (filename);
|
|
|
1270
|
|
|
1271 expanded_name = Fexpand_file_name (filename, default_);
|
|
|
1272
|
|
|
1273 if (!STRINGP (expanded_name))
|
|
|
1274 return Qnil;
|
|
|
1275
|
|
|
1276 GCPRO1 (expanded_name);
|
|
442
|
1277
|
|
|
1278 {
|
|
|
1279 Lisp_Object handler =
|
|
|
1280 Ffind_file_name_handler (expanded_name, Qfile_truename);
|
|
|
1281
|
|
|
1282 if (!NILP (handler))
|
|
|
1283 RETURN_UNGCPRO
|
|
|
1284 (call2_check_string (handler, Qfile_truename, expanded_name));
|
|
|
1285 }
|
|
428
|
1286
|
|
|
1287 {
|
|
|
1288 char resolved_path[MAXPATHLEN];
|
|
|
1289 Extbyte *path;
|
|
|
1290 Extbyte *p;
|
|
440
|
1291 Extcount elen;
|
|
|
1292
|
|
|
1293 TO_EXTERNAL_FORMAT (LISP_STRING, expanded_name,
|
|
|
1294 ALLOCA, (path, elen),
|
|
|
1295 Qfile_name);
|
|
428
|
1296 p = path;
|
|
|
1297 if (elen > MAXPATHLEN)
|
|
|
1298 goto toolong;
|
|
442
|
1299
|
|
428
|
1300 /* Try doing it all at once. */
|
|
|
1301 /* !! Does realpath() Mule-encapsulate?
|
|
|
1302 Answer: Nope! So we do it above */
|
|
|
1303 if (!xrealpath ((char *) path, resolved_path))
|
|
|
1304 {
|
|
|
1305 /* Didn't resolve it -- have to do it one component at a time. */
|
|
|
1306 /* "realpath" is a typically useless, stupid un*x piece of crap.
|
|
|
1307 It claims to return a useful value in the "error" case, but since
|
|
|
1308 there is no indication provided of how far along the pathname
|
|
|
1309 the function went before erring, there is no way to use the
|
|
442
|
1310 partial result returned. What a piece of junk.
|
|
|
1311
|
|
|
1312 The above comment refers to historical versions of
|
|
|
1313 realpath(). The Unix98 specs state:
|
|
|
1314
|
|
|
1315 "On successful completion, realpath() returns a
|
|
|
1316 pointer to the resolved name. Otherwise, realpath()
|
|
|
1317 returns a null pointer and sets errno to indicate the
|
|
|
1318 error, and the contents of the buffer pointed to by
|
|
|
1319 resolved_name are undefined."
|
|
|
1320
|
|
|
1321 Since we depend on undocumented semantics of various system realpath()s,
|
|
|
1322 we just use our own version in realpath.c. */
|
|
428
|
1323 for (;;)
|
|
|
1324 {
|
|
|
1325 p = (Extbyte *) memchr (p + 1, '/', elen - (p + 1 - path));
|
|
|
1326 if (p)
|
|
|
1327 *p = 0;
|
|
|
1328
|
|
|
1329 if (xrealpath ((char *) path, resolved_path))
|
|
|
1330 {
|
|
|
1331 if (p)
|
|
|
1332 *p = '/';
|
|
|
1333 else
|
|
|
1334 break;
|
|
|
1335
|
|
|
1336 }
|
|
|
1337 else if (errno == ENOENT || errno == EACCES)
|
|
|
1338 {
|
|
|
1339 /* Failed on this component. Just tack on the rest of
|
|
|
1340 the string and we are done. */
|
|
|
1341 int rlen = strlen (resolved_path);
|
|
|
1342
|
|
|
1343 /* "On failure, it returns NULL, sets errno to indicate
|
|
|
1344 the error, and places in resolved_path the absolute pathname
|
|
|
1345 of the path component which could not be resolved." */
|
|
442
|
1346
|
|
|
1347 if (p)
|
|
428
|
1348 {
|
|
|
1349 int plen = elen - (p - path);
|
|
|
1350
|
|
|
1351 if (rlen > 1 && resolved_path[rlen - 1] == '/')
|
|
|
1352 rlen = rlen - 1;
|
|
|
1353
|
|
|
1354 if (plen + rlen + 1 > countof (resolved_path))
|
|
|
1355 goto toolong;
|
|
|
1356
|
|
|
1357 resolved_path[rlen] = '/';
|
|
|
1358 memcpy (resolved_path + rlen + 1, p + 1, plen + 1 - 1);
|
|
|
1359 }
|
|
|
1360 break;
|
|
|
1361 }
|
|
|
1362 else
|
|
|
1363 goto lose;
|
|
|
1364 }
|
|
|
1365 }
|
|
|
1366
|
|
|
1367 {
|
|
442
|
1368 Lisp_Object resolved_name;
|
|
428
|
1369 int rlen = strlen (resolved_path);
|
|
|
1370 if (elen > 0 && XSTRING_BYTE (expanded_name, elen - 1) == '/'
|
|
|
1371 && !(rlen > 0 && resolved_path[rlen - 1] == '/'))
|
|
|
1372 {
|
|
|
1373 if (rlen + 1 > countof (resolved_path))
|
|
|
1374 goto toolong;
|
|
442
|
1375 resolved_path[rlen++] = '/';
|
|
|
1376 resolved_path[rlen] = '\0';
|
|
428
|
1377 }
|
|
442
|
1378 TO_INTERNAL_FORMAT (DATA, (resolved_path, rlen),
|
|
|
1379 LISP_STRING, resolved_name,
|
|
|
1380 Qfile_name);
|
|
|
1381 RETURN_UNGCPRO (resolved_name);
|
|
428
|
1382 }
|
|
|
1383
|
|
|
1384 toolong:
|
|
|
1385 errno = ENAMETOOLONG;
|
|
|
1386 goto lose;
|
|
|
1387 lose:
|
|
|
1388 report_file_error ("Finding truename", list1 (expanded_name));
|
|
|
1389 }
|
|
442
|
1390 RETURN_UNGCPRO (Qnil);
|
|
428
|
1391 }
|
|
|
1392
|
|
|
1393
|
|
|
1394 DEFUN ("substitute-in-file-name", Fsubstitute_in_file_name, 1, 1, 0, /*
|
|
|
1395 Substitute environment variables referred to in FILENAME.
|
|
|
1396 `$FOO' where FOO is an environment variable name means to substitute
|
|
|
1397 the value of that variable. The variable name should be terminated
|
|
444
|
1398 with a character, not a letter, digit or underscore; otherwise, enclose
|
|
428
|
1399 the entire variable name in braces.
|
|
|
1400 If `/~' appears, all of FILENAME through that `/' is discarded.
|
|
|
1401 */
|
|
444
|
1402 (filename))
|
|
428
|
1403 {
|
|
442
|
1404 /* This function can GC. GC checked 2000-07-28 ben. */
|
|
428
|
1405 Bufbyte *nm;
|
|
|
1406
|
|
|
1407 Bufbyte *s, *p, *o, *x, *endp;
|
|
|
1408 Bufbyte *target = 0;
|
|
|
1409 int total = 0;
|
|
|
1410 int substituted = 0;
|
|
|
1411 Bufbyte *xnm;
|
|
|
1412 Lisp_Object handler;
|
|
|
1413
|
|
444
|
1414 CHECK_STRING (filename);
|
|
428
|
1415
|
|
|
1416 /* If the file name has special constructs in it,
|
|
|
1417 call the corresponding file handler. */
|
|
444
|
1418 handler = Ffind_file_name_handler (filename, Qsubstitute_in_file_name);
|
|
428
|
1419 if (!NILP (handler))
|
|
|
1420 return call2_check_string_or_nil (handler, Qsubstitute_in_file_name,
|
|
444
|
1421 filename);
|
|
|
1422
|
|
|
1423 nm = XSTRING_DATA (filename);
|
|
|
1424 endp = nm + XSTRING_LENGTH (filename);
|
|
428
|
1425
|
|
|
1426 /* If /~ or // appears, discard everything through first slash. */
|
|
|
1427
|
|
|
1428 for (p = nm; p != endp; p++)
|
|
|
1429 {
|
|
|
1430 if ((p[0] == '~'
|
|
442
|
1431 #if defined (WIN32_NATIVE) || defined (CYGWIN)
|
|
440
|
1432 /* // at start of file name is meaningful in WindowsNT systems */
|
|
428
|
1433 || (IS_DIRECTORY_SEP (p[0]) && p - 1 != nm)
|
|
442
|
1434 #else /* not (WIN32_NATIVE || CYGWIN) */
|
|
428
|
1435 || IS_DIRECTORY_SEP (p[0])
|
|
442
|
1436 #endif /* not (WIN32_NATIVE || CYGWIN) */
|
|
428
|
1437 )
|
|
|
1438 && p != nm
|
|
|
1439 && (IS_DIRECTORY_SEP (p[-1])))
|
|
|
1440 {
|
|
|
1441 nm = p;
|
|
|
1442 substituted = 1;
|
|
|
1443 }
|
|
442
|
1444 #ifdef WIN32_NATIVE
|
|
428
|
1445 /* see comment in expand-file-name about drive specifiers */
|
|
|
1446 else if (IS_DRIVE (p[0]) && p[1] == ':'
|
|
|
1447 && p > nm && IS_DIRECTORY_SEP (p[-1]))
|
|
|
1448 {
|
|
|
1449 nm = p;
|
|
|
1450 substituted = 1;
|
|
|
1451 }
|
|
442
|
1452 #endif /* WIN32_NATIVE */
|
|
428
|
1453 }
|
|
|
1454
|
|
|
1455 /* See if any variables are substituted into the string
|
|
|
1456 and find the total length of their values in `total' */
|
|
|
1457
|
|
|
1458 for (p = nm; p != endp;)
|
|
|
1459 if (*p != '$')
|
|
|
1460 p++;
|
|
|
1461 else
|
|
|
1462 {
|
|
|
1463 p++;
|
|
|
1464 if (p == endp)
|
|
|
1465 goto badsubst;
|
|
|
1466 else if (*p == '$')
|
|
|
1467 {
|
|
|
1468 /* "$$" means a single "$" */
|
|
|
1469 p++;
|
|
|
1470 total -= 1;
|
|
|
1471 substituted = 1;
|
|
|
1472 continue;
|
|
|
1473 }
|
|
|
1474 else if (*p == '{')
|
|
|
1475 {
|
|
|
1476 o = ++p;
|
|
|
1477 while (p != endp && *p != '}') p++;
|
|
|
1478 if (*p != '}') goto missingclose;
|
|
|
1479 s = p;
|
|
|
1480 }
|
|
|
1481 else
|
|
|
1482 {
|
|
|
1483 o = p;
|
|
|
1484 while (p != endp && (isalnum (*p) || *p == '_')) p++;
|
|
|
1485 s = p;
|
|
|
1486 }
|
|
|
1487
|
|
|
1488 /* Copy out the variable name */
|
|
|
1489 target = (Bufbyte *) alloca (s - o + 1);
|
|
|
1490 strncpy ((char *) target, (char *) o, s - o);
|
|
|
1491 target[s - o] = 0;
|
|
442
|
1492 #ifdef WIN32_NATIVE
|
|
428
|
1493 strupr (target); /* $home == $HOME etc. */
|
|
442
|
1494 #endif /* WIN32_NATIVE */
|
|
428
|
1495
|
|
|
1496 /* Get variable value */
|
|
|
1497 o = (Bufbyte *) egetenv ((char *) target);
|
|
|
1498 if (!o) goto badvar;
|
|
|
1499 total += strlen ((char *) o);
|
|
|
1500 substituted = 1;
|
|
|
1501 }
|
|
|
1502
|
|
|
1503 if (!substituted)
|
|
444
|
1504 return filename;
|
|
|
1505
|
|
|
1506 /* If substitution required, recopy the filename and do it */
|
|
428
|
1507 /* Make space in stack frame for the new copy */
|
|
444
|
1508 xnm = (Bufbyte *) alloca (XSTRING_LENGTH (filename) + total + 1);
|
|
428
|
1509 x = xnm;
|
|
|
1510
|
|
|
1511 /* Copy the rest of the name through, replacing $ constructs with values */
|
|
|
1512 for (p = nm; *p;)
|
|
|
1513 if (*p != '$')
|
|
|
1514 *x++ = *p++;
|
|
|
1515 else
|
|
|
1516 {
|
|
|
1517 p++;
|
|
|
1518 if (p == endp)
|
|
|
1519 goto badsubst;
|
|
|
1520 else if (*p == '$')
|
|
|
1521 {
|
|
|
1522 *x++ = *p++;
|
|
|
1523 continue;
|
|
|
1524 }
|
|
|
1525 else if (*p == '{')
|
|
|
1526 {
|
|
|
1527 o = ++p;
|
|
|
1528 while (p != endp && *p != '}') p++;
|
|
|
1529 if (*p != '}') goto missingclose;
|
|
|
1530 s = p++;
|
|
|
1531 }
|
|
|
1532 else
|
|
|
1533 {
|
|
|
1534 o = p;
|
|
|
1535 while (p != endp && (isalnum (*p) || *p == '_')) p++;
|
|
|
1536 s = p;
|
|
|
1537 }
|
|
|
1538
|
|
|
1539 /* Copy out the variable name */
|
|
|
1540 target = (Bufbyte *) alloca (s - o + 1);
|
|
|
1541 strncpy ((char *) target, (char *) o, s - o);
|
|
|
1542 target[s - o] = 0;
|
|
442
|
1543 #ifdef WIN32_NATIVE
|
|
428
|
1544 strupr (target); /* $home == $HOME etc. */
|
|
442
|
1545 #endif /* WIN32_NATIVE */
|
|
428
|
1546
|
|
|
1547 /* Get variable value */
|
|
|
1548 o = (Bufbyte *) egetenv ((char *) target);
|
|
|
1549 if (!o)
|
|
|
1550 goto badvar;
|
|
|
1551
|
|
|
1552 strcpy ((char *) x, (char *) o);
|
|
|
1553 x += strlen ((char *) o);
|
|
|
1554 }
|
|
|
1555
|
|
|
1556 *x = 0;
|
|
|
1557
|
|
|
1558 /* If /~ or // appears, discard everything through first slash. */
|
|
|
1559
|
|
|
1560 for (p = xnm; p != x; p++)
|
|
|
1561 if ((p[0] == '~'
|
|
442
|
1562 #if defined (WIN32_NATIVE)
|
|
428
|
1563 || (IS_DIRECTORY_SEP (p[0]) && p - 1 != xnm)
|
|
442
|
1564 #else /* not WIN32_NATIVE */
|
|
428
|
1565 || IS_DIRECTORY_SEP (p[0])
|
|
442
|
1566 #endif /* not WIN32_NATIVE */
|
|
428
|
1567 )
|
|
|
1568 /* don't do p[-1] if that would go off the beginning --jwz */
|
|
|
1569 && p != nm && p > xnm && IS_DIRECTORY_SEP (p[-1]))
|
|
|
1570 xnm = p;
|
|
442
|
1571 #ifdef WIN32_NATIVE
|
|
428
|
1572 else if (IS_DRIVE (p[0]) && p[1] == ':'
|
|
|
1573 && p > nm && IS_DIRECTORY_SEP (p[-1]))
|
|
|
1574 xnm = p;
|
|
|
1575 #endif
|
|
|
1576
|
|
|
1577 return make_string (xnm, x - xnm);
|
|
|
1578
|
|
|
1579 badsubst:
|
|
444
|
1580 syntax_error ("Bad format environment-variable substitution", filename);
|
|
428
|
1581 missingclose:
|
|
442
|
1582 syntax_error ("Missing \"}\" in environment-variable substitution",
|
|
444
|
1583 filename);
|
|
428
|
1584 badvar:
|
|
442
|
1585 syntax_error_2 ("Substituting nonexistent environment variable",
|
|
444
|
1586 filename, build_string ((char *) target));
|
|
428
|
1587
|
|
|
1588 /* NOTREACHED */
|
|
|
1589 return Qnil; /* suppress compiler warning */
|
|
|
1590 }
|
|
|
1591
|
|
|
1592 /* A slightly faster and more convenient way to get
|
|
|
1593 (directory-file-name (expand-file-name FOO)). */
|
|
|
1594
|
|
|
1595 Lisp_Object
|
|
|
1596 expand_and_dir_to_file (Lisp_Object filename, Lisp_Object defdir)
|
|
|
1597 {
|
|
442
|
1598 /* This function can call Lisp. GC checked 2000-07-28 ben */
|
|
428
|
1599 Lisp_Object abspath;
|
|
|
1600 struct gcpro gcpro1;
|
|
|
1601
|
|
|
1602 abspath = Fexpand_file_name (filename, defdir);
|
|
|
1603 GCPRO1 (abspath);
|
|
|
1604 /* Remove final slash, if any (unless path is root).
|
|
|
1605 stat behaves differently depending! */
|
|
|
1606 if (XSTRING_LENGTH (abspath) > 1
|
|
|
1607 && IS_DIRECTORY_SEP (XSTRING_BYTE (abspath, XSTRING_LENGTH (abspath) - 1))
|
|
|
1608 && !IS_DEVICE_SEP (XSTRING_BYTE (abspath, XSTRING_LENGTH (abspath) - 2)))
|
|
|
1609 /* We cannot take shortcuts; they might be wrong for magic file names. */
|
|
|
1610 abspath = Fdirectory_file_name (abspath);
|
|
|
1611 UNGCPRO;
|
|
|
1612 return abspath;
|
|
|
1613 }
|
|
|
1614
|
|
|
1615 /* Signal an error if the file ABSNAME already exists.
|
|
|
1616 If INTERACTIVE is nonzero, ask the user whether to proceed,
|
|
|
1617 and bypass the error if the user says to go ahead.
|
|
|
1618 QUERYSTRING is a name for the action that is being considered
|
|
|
1619 to alter the file.
|
|
|
1620 *STATPTR is used to store the stat information if the file exists.
|
|
|
1621 If the file does not exist, STATPTR->st_mode is set to 0. */
|
|
|
1622
|
|
|
1623 static void
|
|
442
|
1624 barf_or_query_if_file_exists (Lisp_Object absname, const char *querystring,
|
|
428
|
1625 int interactive, struct stat *statptr)
|
|
|
1626 {
|
|
442
|
1627 /* This function can call Lisp. GC checked 2000-07-28 ben */
|
|
428
|
1628 struct stat statbuf;
|
|
|
1629
|
|
|
1630 /* stat is a good way to tell whether the file exists,
|
|
|
1631 regardless of what access permissions it has. */
|
|
442
|
1632 if (xemacs_stat ((char *) XSTRING_DATA (absname), &statbuf) >= 0)
|
|
428
|
1633 {
|
|
|
1634 Lisp_Object tem;
|
|
|
1635
|
|
|
1636 if (interactive)
|
|
|
1637 {
|
|
|
1638 Lisp_Object prompt;
|
|
|
1639 struct gcpro gcpro1;
|
|
|
1640
|
|
|
1641 prompt = emacs_doprnt_string_c
|
|
442
|
1642 ((const Bufbyte *) GETTEXT ("File %s already exists; %s anyway? "),
|
|
428
|
1643 Qnil, -1, XSTRING_DATA (absname),
|
|
|
1644 GETTEXT (querystring));
|
|
|
1645
|
|
|
1646 GCPRO1 (prompt);
|
|
|
1647 tem = call1 (Qyes_or_no_p, prompt);
|
|
|
1648 UNGCPRO;
|
|
|
1649 }
|
|
|
1650 else
|
|
|
1651 tem = Qnil;
|
|
|
1652
|
|
|
1653 if (NILP (tem))
|
|
|
1654 Fsignal (Qfile_already_exists,
|
|
|
1655 list2 (build_translated_string ("File already exists"),
|
|
|
1656 absname));
|
|
|
1657 if (statptr)
|
|
|
1658 *statptr = statbuf;
|
|
|
1659 }
|
|
|
1660 else
|
|
|
1661 {
|
|
|
1662 if (statptr)
|
|
|
1663 statptr->st_mode = 0;
|
|
|
1664 }
|
|
|
1665 return;
|
|
|
1666 }
|
|
|
1667
|
|
|
1668 DEFUN ("copy-file", Fcopy_file, 2, 4,
|
|
|
1669 "fCopy file: \nFCopy %s to file: \np\nP", /*
|
|
444
|
1670 Copy FILENAME to NEWNAME. Both args must be strings.
|
|
428
|
1671 Signals a `file-already-exists' error if file NEWNAME already exists,
|
|
|
1672 unless a third argument OK-IF-ALREADY-EXISTS is supplied and non-nil.
|
|
|
1673 A number as third arg means request confirmation if NEWNAME already exists.
|
|
|
1674 This is what happens in interactive use with M-x.
|
|
|
1675 Fourth arg KEEP-TIME non-nil means give the new file the same
|
|
|
1676 last-modified time as the old one. (This works on only some systems.)
|
|
|
1677 A prefix arg makes KEEP-TIME non-nil.
|
|
|
1678 */
|
|
|
1679 (filename, newname, ok_if_already_exists, keep_time))
|
|
|
1680 {
|
|
442
|
1681 /* This function can call Lisp. GC checked 2000-07-28 ben */
|
|
428
|
1682 int ifd, ofd, n;
|
|
|
1683 char buf[16 * 1024];
|
|
|
1684 struct stat st, out_st;
|
|
|
1685 Lisp_Object handler;
|
|
|
1686 int speccount = specpdl_depth ();
|
|
|
1687 struct gcpro gcpro1, gcpro2;
|
|
|
1688 /* Lisp_Object args[6]; */
|
|
|
1689 int input_file_statable_p;
|
|
|
1690
|
|
|
1691 GCPRO2 (filename, newname);
|
|
|
1692 CHECK_STRING (filename);
|
|
|
1693 CHECK_STRING (newname);
|
|
|
1694 filename = Fexpand_file_name (filename, Qnil);
|
|
|
1695 newname = Fexpand_file_name (newname, Qnil);
|
|
|
1696
|
|
|
1697 /* If the input file name has special constructs in it,
|
|
|
1698 call the corresponding file handler. */
|
|
|
1699 handler = Ffind_file_name_handler (filename, Qcopy_file);
|
|
|
1700 /* Likewise for output file name. */
|
|
|
1701 if (NILP (handler))
|
|
|
1702 handler = Ffind_file_name_handler (newname, Qcopy_file);
|
|
|
1703 if (!NILP (handler))
|
|
|
1704 {
|
|
|
1705 UNGCPRO;
|
|
|
1706 return call5 (handler, Qcopy_file, filename, newname,
|
|
|
1707 ok_if_already_exists, keep_time);
|
|
|
1708 }
|
|
|
1709
|
|
|
1710 /* When second argument is a directory, copy the file into it.
|
|
|
1711 (copy-file "foo" "bar/") == (copy-file "foo" "bar/foo")
|
|
|
1712 */
|
|
|
1713 if (!NILP (Ffile_directory_p (newname)))
|
|
|
1714 {
|
|
|
1715 Lisp_Object args[3];
|
|
|
1716 struct gcpro ngcpro1;
|
|
|
1717 int i = 1;
|
|
|
1718
|
|
|
1719 args[0] = newname;
|
|
|
1720 args[1] = Qnil; args[2] = Qnil;
|
|
|
1721 NGCPRO1 (*args);
|
|
|
1722 ngcpro1.nvars = 3;
|
|
442
|
1723 if (!IS_DIRECTORY_SEP (XSTRING_BYTE (newname,
|
|
|
1724 XSTRING_LENGTH (newname) - 1)))
|
|
|
1725
|
|
|
1726 args[i++] = Fchar_to_string (Vdirectory_sep_char);
|
|
428
|
1727 args[i++] = Ffile_name_nondirectory (filename);
|
|
|
1728 newname = Fconcat (i, args);
|
|
|
1729 NUNGCPRO;
|
|
|
1730 }
|
|
|
1731
|
|
|
1732 if (NILP (ok_if_already_exists)
|
|
|
1733 || INTP (ok_if_already_exists))
|
|
|
1734 barf_or_query_if_file_exists (newname, "copy to it",
|
|
|
1735 INTP (ok_if_already_exists), &out_st);
|
|
442
|
1736 else if (xemacs_stat ((const char *) XSTRING_DATA (newname), &out_st) < 0)
|
|
428
|
1737 out_st.st_mode = 0;
|
|
|
1738
|
|
|
1739 ifd = interruptible_open ((char *) XSTRING_DATA (filename), O_RDONLY | OPEN_BINARY, 0);
|
|
|
1740 if (ifd < 0)
|
|
|
1741 report_file_error ("Opening input file", list1 (filename));
|
|
|
1742
|
|
|
1743 record_unwind_protect (close_file_unwind, make_int (ifd));
|
|
|
1744
|
|
|
1745 /* We can only copy regular files and symbolic links. Other files are not
|
|
|
1746 copyable by us. */
|
|
|
1747 input_file_statable_p = (fstat (ifd, &st) >= 0);
|
|
|
1748
|
|
442
|
1749 #ifndef WIN32_NATIVE
|
|
428
|
1750 if (out_st.st_mode != 0
|
|
|
1751 && st.st_dev == out_st.st_dev && st.st_ino == out_st.st_ino)
|
|
|
1752 {
|
|
|
1753 errno = 0;
|
|
|
1754 report_file_error ("Input and output files are the same",
|
|
|
1755 list2 (filename, newname));
|
|
|
1756 }
|
|
|
1757 #endif
|
|
|
1758
|
|
|
1759 #if defined (S_ISREG) && defined (S_ISLNK)
|
|
|
1760 if (input_file_statable_p)
|
|
|
1761 {
|
|
|
1762 if (!(S_ISREG (st.st_mode))
|
|
|
1763 /* XEmacs: have to allow S_ISCHR in order to copy /dev/null */
|
|
|
1764 #ifdef S_ISCHR
|
|
|
1765 && !(S_ISCHR (st.st_mode))
|
|
|
1766 #endif
|
|
|
1767 && !(S_ISLNK (st.st_mode)))
|
|
|
1768 {
|
|
|
1769 #if defined (EISDIR)
|
|
|
1770 /* Get a better looking error message. */
|
|
|
1771 errno = EISDIR;
|
|
|
1772 #endif /* EISDIR */
|
|
|
1773 report_file_error ("Non-regular file", list1 (filename));
|
|
|
1774 }
|
|
|
1775 }
|
|
|
1776 #endif /* S_ISREG && S_ISLNK */
|
|
|
1777
|
|
|
1778 ofd = open( (char *) XSTRING_DATA (newname),
|
|
|
1779 O_WRONLY | O_CREAT | O_TRUNC | OPEN_BINARY, CREAT_MODE);
|
|
|
1780 if (ofd < 0)
|
|
|
1781 report_file_error ("Opening output file", list1 (newname));
|
|
|
1782
|
|
|
1783 {
|
|
|
1784 Lisp_Object ofd_locative = noseeum_cons (make_int (ofd), Qnil);
|
|
|
1785
|
|
|
1786 record_unwind_protect (close_file_unwind, ofd_locative);
|
|
|
1787
|
|
|
1788 while ((n = read_allowing_quit (ifd, buf, sizeof (buf))) > 0)
|
|
|
1789 {
|
|
|
1790 if (write_allowing_quit (ofd, buf, n) != n)
|
|
|
1791 report_file_error ("I/O error", list1 (newname));
|
|
|
1792 }
|
|
|
1793
|
|
|
1794 /* Closing the output clobbers the file times on some systems. */
|
|
|
1795 if (close (ofd) < 0)
|
|
|
1796 report_file_error ("I/O error", list1 (newname));
|
|
|
1797
|
|
|
1798 if (input_file_statable_p)
|
|
|
1799 {
|
|
442
|
1800 if (!NILP (keep_time))
|
|
|
1801 {
|
|
|
1802 EMACS_TIME atime, mtime;
|
|
|
1803 EMACS_SET_SECS_USECS (atime, st.st_atime, 0);
|
|
|
1804 EMACS_SET_SECS_USECS (mtime, st.st_mtime, 0);
|
|
|
1805 if (set_file_times ((char *) XSTRING_DATA (newname), atime,
|
|
|
1806 mtime))
|
|
|
1807 report_file_error ("I/O error", list1 (newname));
|
|
|
1808 }
|
|
|
1809 chmod ((const char *) XSTRING_DATA (newname),
|
|
|
1810 st.st_mode & 07777);
|
|
428
|
1811 }
|
|
|
1812
|
|
|
1813 /* We'll close it by hand */
|
|
|
1814 XCAR (ofd_locative) = Qnil;
|
|
|
1815
|
|
|
1816 /* Close ifd */
|
|
|
1817 unbind_to (speccount, Qnil);
|
|
|
1818 }
|
|
|
1819
|
|
|
1820 UNGCPRO;
|
|
|
1821 return Qnil;
|
|
|
1822 }
|
|
|
1823
|
|
|
1824 DEFUN ("make-directory-internal", Fmake_directory_internal, 1, 1, 0, /*
|
|
|
1825 Create a directory. One argument, a file name string.
|
|
|
1826 */
|
|
|
1827 (dirname_))
|
|
|
1828 {
|
|
|
1829 /* This function can GC. GC checked 1997.04.06. */
|
|
|
1830 char dir [MAXPATHLEN];
|
|
|
1831 Lisp_Object handler;
|
|
|
1832 struct gcpro gcpro1;
|
|
|
1833
|
|
|
1834 CHECK_STRING (dirname_);
|
|
|
1835 dirname_ = Fexpand_file_name (dirname_, Qnil);
|
|
|
1836
|
|
|
1837 GCPRO1 (dirname_);
|
|
|
1838 handler = Ffind_file_name_handler (dirname_, Qmake_directory_internal);
|
|
|
1839 UNGCPRO;
|
|
|
1840 if (!NILP (handler))
|
|
|
1841 return (call2 (handler, Qmake_directory_internal, dirname_));
|
|
|
1842
|
|
|
1843 if (XSTRING_LENGTH (dirname_) > (Bytecount) (sizeof (dir) - 1))
|
|
|
1844 {
|
|
|
1845 return Fsignal (Qfile_error,
|
|
|
1846 list3 (build_translated_string ("Creating directory"),
|
|
442
|
1847 build_translated_string ("pathname too long"),
|
|
428
|
1848 dirname_));
|
|
|
1849 }
|
|
|
1850 strncpy (dir, (char *) XSTRING_DATA (dirname_),
|
|
|
1851 XSTRING_LENGTH (dirname_) + 1);
|
|
|
1852
|
|
|
1853 if (dir [XSTRING_LENGTH (dirname_) - 1] == '/')
|
|
|
1854 dir [XSTRING_LENGTH (dirname_) - 1] = 0;
|
|
|
1855
|
|
|
1856 if (mkdir (dir, 0777) != 0)
|
|
|
1857 report_file_error ("Creating directory", list1 (dirname_));
|
|
|
1858
|
|
|
1859 return Qnil;
|
|
|
1860 }
|
|
|
1861
|
|
|
1862 DEFUN ("delete-directory", Fdelete_directory, 1, 1, "FDelete directory: ", /*
|
|
|
1863 Delete a directory. One argument, a file name or directory name string.
|
|
|
1864 */
|
|
|
1865 (dirname_))
|
|
|
1866 {
|
|
|
1867 /* This function can GC. GC checked 1997.04.06. */
|
|
|
1868 Lisp_Object handler;
|
|
|
1869 struct gcpro gcpro1;
|
|
|
1870
|
|
|
1871 CHECK_STRING (dirname_);
|
|
|
1872
|
|
|
1873 GCPRO1 (dirname_);
|
|
|
1874 dirname_ = Fexpand_file_name (dirname_, Qnil);
|
|
|
1875 dirname_ = Fdirectory_file_name (dirname_);
|
|
|
1876
|
|
|
1877 handler = Ffind_file_name_handler (dirname_, Qdelete_directory);
|
|
|
1878 UNGCPRO;
|
|
|
1879 if (!NILP (handler))
|
|
|
1880 return (call2 (handler, Qdelete_directory, dirname_));
|
|
|
1881
|
|
|
1882 if (rmdir ((char *) XSTRING_DATA (dirname_)) != 0)
|
|
|
1883 report_file_error ("Removing directory", list1 (dirname_));
|
|
|
1884
|
|
|
1885 return Qnil;
|
|
|
1886 }
|
|
|
1887
|
|
|
1888 DEFUN ("delete-file", Fdelete_file, 1, 1, "fDelete file: ", /*
|
|
442
|
1889 Delete the file named FILENAME (a string).
|
|
|
1890 If FILENAME has multiple names, it continues to exist with the other names.
|
|
428
|
1891 */
|
|
|
1892 (filename))
|
|
|
1893 {
|
|
|
1894 /* This function can GC. GC checked 1997.04.06. */
|
|
|
1895 Lisp_Object handler;
|
|
|
1896 struct gcpro gcpro1;
|
|
|
1897
|
|
|
1898 CHECK_STRING (filename);
|
|
|
1899 filename = Fexpand_file_name (filename, Qnil);
|
|
|
1900
|
|
|
1901 GCPRO1 (filename);
|
|
|
1902 handler = Ffind_file_name_handler (filename, Qdelete_file);
|
|
|
1903 UNGCPRO;
|
|
|
1904 if (!NILP (handler))
|
|
|
1905 return call2 (handler, Qdelete_file, filename);
|
|
|
1906
|
|
|
1907 if (0 > unlink ((char *) XSTRING_DATA (filename)))
|
|
|
1908 report_file_error ("Removing old name", list1 (filename));
|
|
|
1909 return Qnil;
|
|
|
1910 }
|
|
|
1911
|
|
|
1912 static Lisp_Object
|
|
|
1913 internal_delete_file_1 (Lisp_Object ignore, Lisp_Object ignore2)
|
|
|
1914 {
|
|
|
1915 return Qt;
|
|
|
1916 }
|
|
|
1917
|
|
|
1918 /* Delete file FILENAME, returning 1 if successful and 0 if failed. */
|
|
|
1919
|
|
|
1920 int
|
|
|
1921 internal_delete_file (Lisp_Object filename)
|
|
|
1922 {
|
|
|
1923 /* This function can GC. GC checked 1997.04.06. */
|
|
|
1924 return NILP (condition_case_1 (Qt, Fdelete_file, filename,
|
|
|
1925 internal_delete_file_1, Qnil));
|
|
|
1926 }
|
|
|
1927
|
|
|
1928 DEFUN ("rename-file", Frename_file, 2, 3,
|
|
|
1929 "fRename file: \nFRename %s to file: \np", /*
|
|
444
|
1930 Rename FILENAME as NEWNAME. Both args must be strings.
|
|
|
1931 If file has names other than FILENAME, it continues to have those names.
|
|
428
|
1932 Signals a `file-already-exists' error if a file NEWNAME already exists
|
|
|
1933 unless optional third argument OK-IF-ALREADY-EXISTS is non-nil.
|
|
|
1934 A number as third arg means request confirmation if NEWNAME already exists.
|
|
|
1935 This is what happens in interactive use with M-x.
|
|
|
1936 */
|
|
|
1937 (filename, newname, ok_if_already_exists))
|
|
|
1938 {
|
|
|
1939 /* This function can GC. GC checked 1997.04.06. */
|
|
|
1940 Lisp_Object handler;
|
|
|
1941 struct gcpro gcpro1, gcpro2;
|
|
|
1942
|
|
|
1943 GCPRO2 (filename, newname);
|
|
|
1944 CHECK_STRING (filename);
|
|
|
1945 CHECK_STRING (newname);
|
|
|
1946 filename = Fexpand_file_name (filename, Qnil);
|
|
|
1947 newname = Fexpand_file_name (newname, Qnil);
|
|
|
1948
|
|
|
1949 /* If the file name has special constructs in it,
|
|
|
1950 call the corresponding file handler. */
|
|
|
1951 handler = Ffind_file_name_handler (filename, Qrename_file);
|
|
|
1952 if (NILP (handler))
|
|
|
1953 handler = Ffind_file_name_handler (newname, Qrename_file);
|
|
|
1954 if (!NILP (handler))
|
|
|
1955 {
|
|
|
1956 UNGCPRO;
|
|
|
1957 return call4 (handler, Qrename_file,
|
|
|
1958 filename, newname, ok_if_already_exists);
|
|
|
1959 }
|
|
|
1960
|
|
|
1961 /* When second argument is a directory, rename the file into it.
|
|
|
1962 (rename-file "foo" "bar/") == (rename-file "foo" "bar/foo")
|
|
|
1963 */
|
|
|
1964 if (!NILP (Ffile_directory_p (newname)))
|
|
|
1965 {
|
|
|
1966 Lisp_Object args[3];
|
|
|
1967 struct gcpro ngcpro1;
|
|
|
1968 int i = 1;
|
|
|
1969
|
|
|
1970 args[0] = newname;
|
|
|
1971 args[1] = Qnil; args[2] = Qnil;
|
|
|
1972 NGCPRO1 (*args);
|
|
|
1973 ngcpro1.nvars = 3;
|
|
|
1974 if (XSTRING_BYTE (newname, XSTRING_LENGTH (newname) - 1) != '/')
|
|
|
1975 args[i++] = build_string ("/");
|
|
|
1976 args[i++] = Ffile_name_nondirectory (filename);
|
|
|
1977 newname = Fconcat (i, args);
|
|
|
1978 NUNGCPRO;
|
|
|
1979 }
|
|
|
1980
|
|
|
1981 if (NILP (ok_if_already_exists)
|
|
|
1982 || INTP (ok_if_already_exists))
|
|
|
1983 barf_or_query_if_file_exists (newname, "rename to it",
|
|
|
1984 INTP (ok_if_already_exists), 0);
|
|
|
1985
|
|
|
1986 /* Syncing with FSF 19.34.6 note: FSF does not have conditional code for
|
|
442
|
1987 WIN32_NATIVE here; I've removed it. --marcpa */
|
|
|
1988
|
|
|
1989 /* We have configure check for rename() and emulate using
|
|
|
1990 link()/unlink() if necessary. */
|
|
428
|
1991 if (0 > rename ((char *) XSTRING_DATA (filename),
|
|
|
1992 (char *) XSTRING_DATA (newname)))
|
|
|
1993 {
|
|
|
1994 if (errno == EXDEV)
|
|
|
1995 {
|
|
|
1996 Fcopy_file (filename, newname,
|
|
|
1997 /* We have already prompted if it was an integer,
|
|
|
1998 so don't have copy-file prompt again. */
|
|
|
1999 (NILP (ok_if_already_exists) ? Qnil : Qt),
|
|
|
2000 Qt);
|
|
|
2001 Fdelete_file (filename);
|
|
|
2002 }
|
|
|
2003 else
|
|
|
2004 {
|
|
|
2005 report_file_error ("Renaming", list2 (filename, newname));
|
|
|
2006 }
|
|
|
2007 }
|
|
|
2008 UNGCPRO;
|
|
|
2009 return Qnil;
|
|
|
2010 }
|
|
|
2011
|
|
|
2012 DEFUN ("add-name-to-file", Fadd_name_to_file, 2, 3,
|
|
|
2013 "fAdd name to file: \nFName to add to %s: \np", /*
|
|
444
|
2014 Give FILENAME additional name NEWNAME. Both args must be strings.
|
|
428
|
2015 Signals a `file-already-exists' error if a file NEWNAME already exists
|
|
|
2016 unless optional third argument OK-IF-ALREADY-EXISTS is non-nil.
|
|
|
2017 A number as third arg means request confirmation if NEWNAME already exists.
|
|
|
2018 This is what happens in interactive use with M-x.
|
|
|
2019 */
|
|
|
2020 (filename, newname, ok_if_already_exists))
|
|
|
2021 {
|
|
|
2022 /* This function can GC. GC checked 1997.04.06. */
|
|
|
2023 Lisp_Object handler;
|
|
|
2024 struct gcpro gcpro1, gcpro2;
|
|
|
2025
|
|
|
2026 GCPRO2 (filename, newname);
|
|
|
2027 CHECK_STRING (filename);
|
|
|
2028 CHECK_STRING (newname);
|
|
|
2029 filename = Fexpand_file_name (filename, Qnil);
|
|
|
2030 newname = Fexpand_file_name (newname, Qnil);
|
|
|
2031
|
|
|
2032 /* If the file name has special constructs in it,
|
|
|
2033 call the corresponding file handler. */
|
|
|
2034 handler = Ffind_file_name_handler (filename, Qadd_name_to_file);
|
|
|
2035 if (!NILP (handler))
|
|
|
2036 RETURN_UNGCPRO (call4 (handler, Qadd_name_to_file, filename,
|
|
|
2037 newname, ok_if_already_exists));
|
|
|
2038
|
|
|
2039 /* If the new name has special constructs in it,
|
|
|
2040 call the corresponding file handler. */
|
|
|
2041 handler = Ffind_file_name_handler (newname, Qadd_name_to_file);
|
|
|
2042 if (!NILP (handler))
|
|
|
2043 RETURN_UNGCPRO (call4 (handler, Qadd_name_to_file, filename,
|
|
|
2044 newname, ok_if_already_exists));
|
|
|
2045
|
|
|
2046 if (NILP (ok_if_already_exists)
|
|
|
2047 || INTP (ok_if_already_exists))
|
|
|
2048 barf_or_query_if_file_exists (newname, "make it a new name",
|
|
|
2049 INTP (ok_if_already_exists), 0);
|
|
|
2050 /* Syncing with FSF 19.34.6 note: FSF does not report a file error
|
|
|
2051 on NT here. --marcpa */
|
|
|
2052 /* But FSF #defines link as sys_link which is supplied in nt.c. We can't do
|
|
|
2053 that because sysfile.h defines sys_link depending on ENCAPSULATE_LINK.
|
|
|
2054 Reverted to previous behavior pending a working fix. (jhar) */
|
|
442
|
2055 #if defined(WIN32_NATIVE)
|
|
428
|
2056 /* Windows does not support this operation. */
|
|
|
2057 report_file_error ("Adding new name", Flist (2, &filename));
|
|
442
|
2058 #else /* not defined(WIN32_NATIVE) */
|
|
428
|
2059
|
|
|
2060 unlink ((char *) XSTRING_DATA (newname));
|
|
|
2061 if (0 > link ((char *) XSTRING_DATA (filename),
|
|
|
2062 (char *) XSTRING_DATA (newname)))
|
|
|
2063 {
|
|
|
2064 report_file_error ("Adding new name",
|
|
|
2065 list2 (filename, newname));
|
|
|
2066 }
|
|
442
|
2067 #endif /* defined(WIN32_NATIVE) */
|
|
428
|
2068
|
|
|
2069 UNGCPRO;
|
|
|
2070 return Qnil;
|
|
|
2071 }
|
|
|
2072
|
|
|
2073 DEFUN ("make-symbolic-link", Fmake_symbolic_link, 2, 3,
|
|
|
2074 "FMake symbolic link to file: \nFMake symbolic link to file %s: \np", /*
|
|
|
2075 Make a symbolic link to FILENAME, named LINKNAME. Both args strings.
|
|
|
2076 Signals a `file-already-exists' error if a file LINKNAME already exists
|
|
|
2077 unless optional third argument OK-IF-ALREADY-EXISTS is non-nil.
|
|
|
2078 A number as third arg means request confirmation if LINKNAME already exists.
|
|
|
2079 This happens for interactive use with M-x.
|
|
|
2080 */
|
|
|
2081 (filename, linkname, ok_if_already_exists))
|
|
|
2082 {
|
|
|
2083 /* This function can GC. GC checked 1997.06.04. */
|
|
442
|
2084 /* XEmacs change: run handlers even if local machine doesn't have symlinks */
|
|
428
|
2085 Lisp_Object handler;
|
|
|
2086 struct gcpro gcpro1, gcpro2;
|
|
|
2087
|
|
|
2088 GCPRO2 (filename, linkname);
|
|
|
2089 CHECK_STRING (filename);
|
|
|
2090 CHECK_STRING (linkname);
|
|
|
2091 /* If the link target has a ~, we must expand it to get
|
|
|
2092 a truly valid file name. Otherwise, do not expand;
|
|
|
2093 we want to permit links to relative file names. */
|
|
|
2094 if (XSTRING_BYTE (filename, 0) == '~')
|
|
|
2095 filename = Fexpand_file_name (filename, Qnil);
|
|
|
2096 linkname = Fexpand_file_name (linkname, Qnil);
|
|
|
2097
|
|
|
2098 /* If the file name has special constructs in it,
|
|
|
2099 call the corresponding file handler. */
|
|
|
2100 handler = Ffind_file_name_handler (filename, Qmake_symbolic_link);
|
|
|
2101 if (!NILP (handler))
|
|
|
2102 RETURN_UNGCPRO (call4 (handler, Qmake_symbolic_link, filename, linkname,
|
|
|
2103 ok_if_already_exists));
|
|
|
2104
|
|
|
2105 /* If the new link name has special constructs in it,
|
|
|
2106 call the corresponding file handler. */
|
|
|
2107 handler = Ffind_file_name_handler (linkname, Qmake_symbolic_link);
|
|
|
2108 if (!NILP (handler))
|
|
|
2109 RETURN_UNGCPRO (call4 (handler, Qmake_symbolic_link, filename,
|
|
|
2110 linkname, ok_if_already_exists));
|
|
|
2111
|
|
442
|
2112 #ifdef S_IFLNK
|
|
428
|
2113 if (NILP (ok_if_already_exists)
|
|
|
2114 || INTP (ok_if_already_exists))
|
|
|
2115 barf_or_query_if_file_exists (linkname, "make it a link",
|
|
|
2116 INTP (ok_if_already_exists), 0);
|
|
|
2117
|
|
|
2118 unlink ((char *) XSTRING_DATA (linkname));
|
|
|
2119 if (0 > symlink ((char *) XSTRING_DATA (filename),
|
|
|
2120 (char *) XSTRING_DATA (linkname)))
|
|
|
2121 {
|
|
|
2122 report_file_error ("Making symbolic link",
|
|
|
2123 list2 (filename, linkname));
|
|
|
2124 }
|
|
442
|
2125 #endif /* S_IFLNK */
|
|
|
2126
|
|
428
|
2127 UNGCPRO;
|
|
|
2128 return Qnil;
|
|
|
2129 }
|
|
|
2130
|
|
|
2131 #ifdef HPUX_NET
|
|
|
2132
|
|
|
2133 DEFUN ("sysnetunam", Fsysnetunam, 2, 2, 0, /*
|
|
|
2134 Open a network connection to PATH using LOGIN as the login string.
|
|
|
2135 */
|
|
|
2136 (path, login))
|
|
|
2137 {
|
|
|
2138 int netresult;
|
|
440
|
2139 const char *path_ext;
|
|
|
2140 const char *login_ext;
|
|
428
|
2141
|
|
|
2142 CHECK_STRING (path);
|
|
|
2143 CHECK_STRING (login);
|
|
|
2144
|
|
|
2145 /* netunam, being a strange-o system call only used once, is not
|
|
|
2146 encapsulated. */
|
|
440
|
2147
|
|
442
|
2148 LISP_STRING_TO_EXTERNAL (path, path_ext, Qfile_name);
|
|
|
2149 LISP_STRING_TO_EXTERNAL (login, login_ext, Qnative);
|
|
440
|
2150
|
|
|
2151 netresult = netunam (path_ext, login_ext);
|
|
|
2152
|
|
|
2153 return netresult == -1 ? Qnil : Qt;
|
|
428
|
2154 }
|
|
|
2155 #endif /* HPUX_NET */
|
|
|
2156
|
|
|
2157 DEFUN ("file-name-absolute-p", Ffile_name_absolute_p, 1, 1, 0, /*
|
|
|
2158 Return t if file FILENAME specifies an absolute path name.
|
|
|
2159 On Unix, this is a name starting with a `/' or a `~'.
|
|
|
2160 */
|
|
|
2161 (filename))
|
|
|
2162 {
|
|
|
2163 /* This function does not GC */
|
|
|
2164 Bufbyte *ptr;
|
|
|
2165
|
|
|
2166 CHECK_STRING (filename);
|
|
|
2167 ptr = XSTRING_DATA (filename);
|
|
|
2168 return (IS_DIRECTORY_SEP (*ptr) || *ptr == '~'
|
|
442
|
2169 #ifdef WIN32_NATIVE
|
|
428
|
2170 || (IS_DRIVE (*ptr) && ptr[1] == ':' && IS_DIRECTORY_SEP (ptr[2]))
|
|
|
2171 #endif
|
|
|
2172 ) ? Qt : Qnil;
|
|
|
2173 }
|
|
|
2174
|
|
|
2175 /* Return nonzero if file FILENAME exists and can be executed. */
|
|
|
2176
|
|
|
2177 static int
|
|
|
2178 check_executable (char *filename)
|
|
|
2179 {
|
|
442
|
2180 #ifdef WIN32_NATIVE
|
|
428
|
2181 struct stat st;
|
|
442
|
2182 if (xemacs_stat (filename, &st) < 0)
|
|
428
|
2183 return 0;
|
|
|
2184 return ((st.st_mode & S_IEXEC) != 0);
|
|
442
|
2185 #else /* not WIN32_NATIVE */
|
|
428
|
2186 #ifdef HAVE_EACCESS
|
|
442
|
2187 return eaccess (filename, X_OK) >= 0;
|
|
428
|
2188 #else
|
|
|
2189 /* Access isn't quite right because it uses the real uid
|
|
|
2190 and we really want to test with the effective uid.
|
|
|
2191 But Unix doesn't give us a right way to do it. */
|
|
442
|
2192 return access (filename, X_OK) >= 0;
|
|
428
|
2193 #endif /* HAVE_EACCESS */
|
|
442
|
2194 #endif /* not WIN32_NATIVE */
|
|
428
|
2195 }
|
|
|
2196
|
|
|
2197 /* Return nonzero if file FILENAME exists and can be written. */
|
|
|
2198
|
|
|
2199 static int
|
|
442
|
2200 check_writable (const char *filename)
|
|
428
|
2201 {
|
|
|
2202 #ifdef HAVE_EACCESS
|
|
442
|
2203 return (eaccess (filename, W_OK) >= 0);
|
|
428
|
2204 #else
|
|
|
2205 /* Access isn't quite right because it uses the real uid
|
|
|
2206 and we really want to test with the effective uid.
|
|
|
2207 But Unix doesn't give us a right way to do it.
|
|
|
2208 Opening with O_WRONLY could work for an ordinary file,
|
|
|
2209 but would lose for directories. */
|
|
442
|
2210 return (access (filename, W_OK) >= 0);
|
|
428
|
2211 #endif
|
|
|
2212 }
|
|
|
2213
|
|
|
2214 DEFUN ("file-exists-p", Ffile_exists_p, 1, 1, 0, /*
|
|
|
2215 Return t if file FILENAME exists. (This does not mean you can read it.)
|
|
|
2216 See also `file-readable-p' and `file-attributes'.
|
|
|
2217 */
|
|
|
2218 (filename))
|
|
|
2219 {
|
|
442
|
2220 /* This function can call lisp; GC checked 2000-07-11 ben */
|
|
428
|
2221 Lisp_Object abspath;
|
|
|
2222 Lisp_Object handler;
|
|
|
2223 struct stat statbuf;
|
|
|
2224 struct gcpro gcpro1;
|
|
|
2225
|
|
|
2226 CHECK_STRING (filename);
|
|
|
2227 abspath = Fexpand_file_name (filename, Qnil);
|
|
|
2228
|
|
|
2229 /* If the file name has special constructs in it,
|
|
|
2230 call the corresponding file handler. */
|
|
|
2231 GCPRO1 (abspath);
|
|
|
2232 handler = Ffind_file_name_handler (abspath, Qfile_exists_p);
|
|
|
2233 UNGCPRO;
|
|
|
2234 if (!NILP (handler))
|
|
|
2235 return call2 (handler, Qfile_exists_p, abspath);
|
|
|
2236
|
|
442
|
2237 return xemacs_stat ((char *) XSTRING_DATA (abspath), &statbuf) >= 0 ? Qt : Qnil;
|
|
428
|
2238 }
|
|
|
2239
|
|
|
2240 DEFUN ("file-executable-p", Ffile_executable_p, 1, 1, 0, /*
|
|
|
2241 Return t if FILENAME can be executed by you.
|
|
|
2242 For a directory, this means you can access files in that directory.
|
|
|
2243 */
|
|
|
2244 (filename))
|
|
|
2245
|
|
|
2246 {
|
|
442
|
2247 /* This function can GC. GC checked 07-11-2000 ben. */
|
|
428
|
2248 Lisp_Object abspath;
|
|
|
2249 Lisp_Object handler;
|
|
|
2250 struct gcpro gcpro1;
|
|
|
2251
|
|
|
2252 CHECK_STRING (filename);
|
|
|
2253 abspath = Fexpand_file_name (filename, Qnil);
|
|
|
2254
|
|
|
2255 /* If the file name has special constructs in it,
|
|
|
2256 call the corresponding file handler. */
|
|
|
2257 GCPRO1 (abspath);
|
|
|
2258 handler = Ffind_file_name_handler (abspath, Qfile_executable_p);
|
|
|
2259 UNGCPRO;
|
|
|
2260 if (!NILP (handler))
|
|
|
2261 return call2 (handler, Qfile_executable_p, abspath);
|
|
|
2262
|
|
|
2263 return check_executable ((char *) XSTRING_DATA (abspath)) ? Qt : Qnil;
|
|
|
2264 }
|
|
|
2265
|
|
|
2266 DEFUN ("file-readable-p", Ffile_readable_p, 1, 1, 0, /*
|
|
|
2267 Return t if file FILENAME exists and you can read it.
|
|
|
2268 See also `file-exists-p' and `file-attributes'.
|
|
|
2269 */
|
|
|
2270 (filename))
|
|
|
2271 {
|
|
|
2272 /* This function can GC */
|
|
|
2273 Lisp_Object abspath = Qnil;
|
|
|
2274 Lisp_Object handler;
|
|
|
2275 struct gcpro gcpro1;
|
|
|
2276 GCPRO1 (abspath);
|
|
|
2277
|
|
|
2278 CHECK_STRING (filename);
|
|
|
2279 abspath = Fexpand_file_name (filename, Qnil);
|
|
|
2280
|
|
|
2281 /* If the file name has special constructs in it,
|
|
|
2282 call the corresponding file handler. */
|
|
|
2283 handler = Ffind_file_name_handler (abspath, Qfile_readable_p);
|
|
|
2284 if (!NILP (handler))
|
|
|
2285 RETURN_UNGCPRO (call2 (handler, Qfile_readable_p, abspath));
|
|
|
2286
|
|
442
|
2287 #if defined(WIN32_NATIVE) || defined(CYGWIN)
|
|
428
|
2288 /* Under MS-DOS and Windows, open does not work for directories. */
|
|
|
2289 UNGCPRO;
|
|
|
2290 if (access (XSTRING_DATA (abspath), 0) == 0)
|
|
|
2291 return Qt;
|
|
|
2292 else
|
|
|
2293 return Qnil;
|
|
442
|
2294 #else /* not WIN32_NATIVE */
|
|
428
|
2295 {
|
|
|
2296 int desc = interruptible_open ((char *) XSTRING_DATA (abspath), O_RDONLY | OPEN_BINARY, 0);
|
|
|
2297 UNGCPRO;
|
|
|
2298 if (desc < 0)
|
|
|
2299 return Qnil;
|
|
|
2300 close (desc);
|
|
|
2301 return Qt;
|
|
|
2302 }
|
|
442
|
2303 #endif /* not WIN32_NATIVE */
|
|
428
|
2304 }
|
|
|
2305
|
|
|
2306 /* Having this before file-symlink-p mysteriously caused it to be forgotten
|
|
|
2307 on the RT/PC. */
|
|
|
2308 DEFUN ("file-writable-p", Ffile_writable_p, 1, 1, 0, /*
|
|
|
2309 Return t if file FILENAME can be written or created by you.
|
|
|
2310 */
|
|
|
2311 (filename))
|
|
|
2312 {
|
|
|
2313 /* This function can GC. GC checked 1997.04.10. */
|
|
|
2314 Lisp_Object abspath, dir;
|
|
|
2315 Lisp_Object handler;
|
|
|
2316 struct stat statbuf;
|
|
|
2317 struct gcpro gcpro1;
|
|
|
2318
|
|
|
2319 CHECK_STRING (filename);
|
|
|
2320 abspath = Fexpand_file_name (filename, Qnil);
|
|
|
2321
|
|
|
2322 /* If the file name has special constructs in it,
|
|
|
2323 call the corresponding file handler. */
|
|
|
2324 GCPRO1 (abspath);
|
|
|
2325 handler = Ffind_file_name_handler (abspath, Qfile_writable_p);
|
|
|
2326 UNGCPRO;
|
|
|
2327 if (!NILP (handler))
|
|
|
2328 return call2 (handler, Qfile_writable_p, abspath);
|
|
|
2329
|
|
442
|
2330 if (xemacs_stat ((char *) XSTRING_DATA (abspath), &statbuf) >= 0)
|
|
428
|
2331 return (check_writable ((char *) XSTRING_DATA (abspath))
|
|
|
2332 ? Qt : Qnil);
|
|
|
2333
|
|
|
2334
|
|
|
2335 GCPRO1 (abspath);
|
|
|
2336 dir = Ffile_name_directory (abspath);
|
|
|
2337 UNGCPRO;
|
|
|
2338 return (check_writable (!NILP (dir) ? (char *) XSTRING_DATA (dir)
|
|
|
2339 : "")
|
|
|
2340 ? Qt : Qnil);
|
|
|
2341 }
|
|
|
2342
|
|
|
2343 DEFUN ("file-symlink-p", Ffile_symlink_p, 1, 1, 0, /*
|
|
|
2344 Return non-nil if file FILENAME is the name of a symbolic link.
|
|
|
2345 The value is the name of the file to which it is linked.
|
|
|
2346 Otherwise returns nil.
|
|
|
2347 */
|
|
|
2348 (filename))
|
|
|
2349 {
|
|
|
2350 /* This function can GC. GC checked 1997.04.10. */
|
|
442
|
2351 /* XEmacs change: run handlers even if local machine doesn't have symlinks */
|
|
428
|
2352 #ifdef S_IFLNK
|
|
|
2353 char *buf;
|
|
|
2354 int bufsize;
|
|
|
2355 int valsize;
|
|
|
2356 Lisp_Object val;
|
|
442
|
2357 #endif
|
|
428
|
2358 Lisp_Object handler;
|
|
|
2359 struct gcpro gcpro1;
|
|
|
2360
|
|
|
2361 CHECK_STRING (filename);
|
|
|
2362 filename = Fexpand_file_name (filename, Qnil);
|
|
|
2363
|
|
|
2364 /* If the file name has special constructs in it,
|
|
|
2365 call the corresponding file handler. */
|
|
|
2366 GCPRO1 (filename);
|
|
|
2367 handler = Ffind_file_name_handler (filename, Qfile_symlink_p);
|
|
|
2368 UNGCPRO;
|
|
|
2369 if (!NILP (handler))
|
|
|
2370 return call2 (handler, Qfile_symlink_p, filename);
|
|
|
2371
|
|
442
|
2372 #ifdef S_IFLNK
|
|
428
|
2373 bufsize = 100;
|
|
|
2374 while (1)
|
|
|
2375 {
|
|
|
2376 buf = xnew_array_and_zero (char, bufsize);
|
|
|
2377 valsize = readlink ((char *) XSTRING_DATA (filename),
|
|
|
2378 buf, bufsize);
|
|
|
2379 if (valsize < bufsize) break;
|
|
|
2380 /* Buffer was not long enough */
|
|
|
2381 xfree (buf);
|
|
|
2382 bufsize *= 2;
|
|
|
2383 }
|
|
|
2384 if (valsize == -1)
|
|
|
2385 {
|
|
|
2386 xfree (buf);
|
|
|
2387 return Qnil;
|
|
|
2388 }
|
|
|
2389 val = make_string ((Bufbyte *) buf, valsize);
|
|
|
2390 xfree (buf);
|
|
|
2391 return val;
|
|
|
2392 #else /* not S_IFLNK */
|
|
|
2393 return Qnil;
|
|
|
2394 #endif /* not S_IFLNK */
|
|
|
2395 }
|
|
|
2396
|
|
|
2397 DEFUN ("file-directory-p", Ffile_directory_p, 1, 1, 0, /*
|
|
|
2398 Return t if file FILENAME is the name of a directory as a file.
|
|
|
2399 A directory name spec may be given instead; then the value is t
|
|
|
2400 if the directory so specified exists and really is a directory.
|
|
|
2401 */
|
|
|
2402 (filename))
|
|
|
2403 {
|
|
|
2404 /* This function can GC. GC checked 1997.04.10. */
|
|
|
2405 Lisp_Object abspath;
|
|
|
2406 struct stat st;
|
|
|
2407 Lisp_Object handler;
|
|
|
2408 struct gcpro gcpro1;
|
|
|
2409
|
|
|
2410 GCPRO1 (current_buffer->directory);
|
|
|
2411 abspath = expand_and_dir_to_file (filename,
|
|
|
2412 current_buffer->directory);
|
|
|
2413 UNGCPRO;
|
|
|
2414
|
|
|
2415 /* If the file name has special constructs in it,
|
|
|
2416 call the corresponding file handler. */
|
|
|
2417 GCPRO1 (abspath);
|
|
|
2418 handler = Ffind_file_name_handler (abspath, Qfile_directory_p);
|
|
|
2419 UNGCPRO;
|
|
|
2420 if (!NILP (handler))
|
|
|
2421 return call2 (handler, Qfile_directory_p, abspath);
|
|
|
2422
|
|
442
|
2423 if (xemacs_stat ((char *) XSTRING_DATA (abspath), &st) < 0)
|
|
428
|
2424 return Qnil;
|
|
|
2425 return (st.st_mode & S_IFMT) == S_IFDIR ? Qt : Qnil;
|
|
|
2426 }
|
|
|
2427
|
|
|
2428 DEFUN ("file-accessible-directory-p", Ffile_accessible_directory_p, 1, 1, 0, /*
|
|
|
2429 Return t if file FILENAME is the name of a directory as a file,
|
|
|
2430 and files in that directory can be opened by you. In order to use a
|
|
|
2431 directory as a buffer's current directory, this predicate must return true.
|
|
|
2432 A directory name spec may be given instead; then the value is t
|
|
|
2433 if the directory so specified exists and really is a readable and
|
|
|
2434 searchable directory.
|
|
|
2435 */
|
|
|
2436 (filename))
|
|
|
2437 {
|
|
|
2438 /* This function can GC. GC checked 1997.04.10. */
|
|
|
2439 Lisp_Object handler;
|
|
|
2440
|
|
|
2441 /* If the file name has special constructs in it,
|
|
|
2442 call the corresponding file handler. */
|
|
|
2443 handler = Ffind_file_name_handler (filename, Qfile_accessible_directory_p);
|
|
|
2444 if (!NILP (handler))
|
|
|
2445 return call2 (handler, Qfile_accessible_directory_p,
|
|
|
2446 filename);
|
|
|
2447
|
|
442
|
2448 #if !defined(WIN32_NATIVE)
|
|
428
|
2449 if (NILP (Ffile_directory_p (filename)))
|
|
|
2450 return (Qnil);
|
|
|
2451 else
|
|
|
2452 return Ffile_executable_p (filename);
|
|
|
2453 #else
|
|
|
2454 {
|
|
|
2455 int tem;
|
|
|
2456 struct gcpro gcpro1;
|
|
|
2457 /* It's an unlikely combination, but yes we really do need to gcpro:
|
|
|
2458 Suppose that file-accessible-directory-p has no handler, but
|
|
|
2459 file-directory-p does have a handler; this handler causes a GC which
|
|
|
2460 relocates the string in `filename'; and finally file-directory-p
|
|
|
2461 returns non-nil. Then we would end up passing a garbaged string
|
|
|
2462 to file-executable-p. */
|
|
|
2463 GCPRO1 (filename);
|
|
|
2464 tem = (NILP (Ffile_directory_p (filename))
|
|
|
2465 || NILP (Ffile_executable_p (filename)));
|
|
|
2466 UNGCPRO;
|
|
|
2467 return tem ? Qnil : Qt;
|
|
|
2468 }
|
|
442
|
2469 #endif /* !defined(WIN32_NATIVE) */
|
|
428
|
2470 }
|
|
|
2471
|
|
|
2472 DEFUN ("file-regular-p", Ffile_regular_p, 1, 1, 0, /*
|
|
|
2473 Return t if file FILENAME is the name of a regular file.
|
|
|
2474 This is the sort of file that holds an ordinary stream of data bytes.
|
|
|
2475 */
|
|
|
2476 (filename))
|
|
|
2477 {
|
|
|
2478 /* This function can GC. GC checked 1997.04.10. */
|
|
|
2479 Lisp_Object abspath;
|
|
|
2480 struct stat st;
|
|
|
2481 Lisp_Object handler;
|
|
|
2482 struct gcpro gcpro1;
|
|
|
2483
|
|
|
2484 GCPRO1 (current_buffer->directory);
|
|
|
2485 abspath = expand_and_dir_to_file (filename, current_buffer->directory);
|
|
|
2486 UNGCPRO;
|
|
|
2487
|
|
|
2488 /* If the file name has special constructs in it,
|
|
|
2489 call the corresponding file handler. */
|
|
|
2490 GCPRO1 (abspath);
|
|
|
2491 handler = Ffind_file_name_handler (abspath, Qfile_regular_p);
|
|
|
2492 UNGCPRO;
|
|
|
2493 if (!NILP (handler))
|
|
|
2494 return call2 (handler, Qfile_regular_p, abspath);
|
|
|
2495
|
|
442
|
2496 if (xemacs_stat ((char *) XSTRING_DATA (abspath), &st) < 0)
|
|
428
|
2497 return Qnil;
|
|
|
2498 return (st.st_mode & S_IFMT) == S_IFREG ? Qt : Qnil;
|
|
|
2499 }
|
|
|
2500
|
|
|
2501 DEFUN ("file-modes", Ffile_modes, 1, 1, 0, /*
|
|
444
|
2502 Return mode bits of file named FILENAME, as an integer.
|
|
428
|
2503 */
|
|
|
2504 (filename))
|
|
|
2505 {
|
|
|
2506 /* This function can GC. GC checked 1997.04.10. */
|
|
|
2507 Lisp_Object abspath;
|
|
|
2508 struct stat st;
|
|
|
2509 Lisp_Object handler;
|
|
|
2510 struct gcpro gcpro1;
|
|
|
2511
|
|
|
2512 GCPRO1 (current_buffer->directory);
|
|
|
2513 abspath = expand_and_dir_to_file (filename,
|
|
|
2514 current_buffer->directory);
|
|
|
2515 UNGCPRO;
|
|
|
2516
|
|
|
2517 /* If the file name has special constructs in it,
|
|
|
2518 call the corresponding file handler. */
|
|
|
2519 GCPRO1 (abspath);
|
|
|
2520 handler = Ffind_file_name_handler (abspath, Qfile_modes);
|
|
|
2521 UNGCPRO;
|
|
|
2522 if (!NILP (handler))
|
|
|
2523 return call2 (handler, Qfile_modes, abspath);
|
|
|
2524
|
|
442
|
2525 if (xemacs_stat ((char *) XSTRING_DATA (abspath), &st) < 0)
|
|
428
|
2526 return Qnil;
|
|
|
2527 /* Syncing with FSF 19.34.6 note: not in FSF, #if 0'ed out here. */
|
|
|
2528 #if 0
|
|
442
|
2529 #ifdef WIN32_NATIVE
|
|
428
|
2530 if (check_executable (XSTRING_DATA (abspath)))
|
|
|
2531 st.st_mode |= S_IEXEC;
|
|
442
|
2532 #endif /* WIN32_NATIVE */
|
|
428
|
2533 #endif /* 0 */
|
|
|
2534
|
|
|
2535 return make_int (st.st_mode & 07777);
|
|
|
2536 }
|
|
|
2537
|
|
|
2538 DEFUN ("set-file-modes", Fset_file_modes, 2, 2, 0, /*
|
|
444
|
2539 Set mode bits of file named FILENAME to MODE (an integer).
|
|
428
|
2540 Only the 12 low bits of MODE are used.
|
|
|
2541 */
|
|
|
2542 (filename, mode))
|
|
|
2543 {
|
|
|
2544 /* This function can GC. GC checked 1997.04.10. */
|
|
|
2545 Lisp_Object abspath;
|
|
|
2546 Lisp_Object handler;
|
|
|
2547 struct gcpro gcpro1;
|
|
|
2548
|
|
|
2549 GCPRO1 (current_buffer->directory);
|
|
|
2550 abspath = Fexpand_file_name (filename, current_buffer->directory);
|
|
|
2551 UNGCPRO;
|
|
|
2552
|
|
|
2553 CHECK_INT (mode);
|
|
|
2554
|
|
|
2555 /* If the file name has special constructs in it,
|
|
|
2556 call the corresponding file handler. */
|
|
|
2557 GCPRO1 (abspath);
|
|
|
2558 handler = Ffind_file_name_handler (abspath, Qset_file_modes);
|
|
|
2559 UNGCPRO;
|
|
|
2560 if (!NILP (handler))
|
|
|
2561 return call3 (handler, Qset_file_modes, abspath, mode);
|
|
|
2562
|
|
|
2563 if (chmod ((char *) XSTRING_DATA (abspath), XINT (mode)) < 0)
|
|
|
2564 report_file_error ("Doing chmod", list1 (abspath));
|
|
|
2565
|
|
|
2566 return Qnil;
|
|
|
2567 }
|
|
|
2568
|
|
|
2569 DEFUN ("set-default-file-modes", Fset_default_file_modes, 1, 1, 0, /*
|
|
|
2570 Set the file permission bits for newly created files.
|
|
444
|
2571 The argument MODE should be an integer; if a bit in MODE is 1,
|
|
|
2572 subsequently created files will not have the permission corresponding
|
|
|
2573 to that bit enabled. Only the low 9 bits are used.
|
|
428
|
2574 This setting is inherited by subprocesses.
|
|
|
2575 */
|
|
|
2576 (mode))
|
|
|
2577 {
|
|
|
2578 CHECK_INT (mode);
|
|
|
2579
|
|
|
2580 umask ((~ XINT (mode)) & 0777);
|
|
|
2581
|
|
|
2582 return Qnil;
|
|
|
2583 }
|
|
|
2584
|
|
|
2585 DEFUN ("default-file-modes", Fdefault_file_modes, 0, 0, 0, /*
|
|
|
2586 Return the default file protection for created files.
|
|
|
2587 The umask value determines which permissions are enabled in newly
|
|
|
2588 created files. If a permission's bit in the umask is 1, subsequently
|
|
|
2589 created files will not have that permission enabled.
|
|
|
2590 */
|
|
|
2591 ())
|
|
|
2592 {
|
|
|
2593 int mode;
|
|
|
2594
|
|
|
2595 mode = umask (0);
|
|
|
2596 umask (mode);
|
|
|
2597
|
|
|
2598 return make_int ((~ mode) & 0777);
|
|
|
2599 }
|
|
|
2600
|
|
|
2601 DEFUN ("unix-sync", Funix_sync, 0, 0, "", /*
|
|
|
2602 Tell Unix to finish all pending disk updates.
|
|
|
2603 */
|
|
|
2604 ())
|
|
|
2605 {
|
|
442
|
2606 #ifndef WIN32_NATIVE
|
|
428
|
2607 sync ();
|
|
|
2608 #endif
|
|
|
2609 return Qnil;
|
|
|
2610 }
|
|
|
2611
|
|
|
2612
|
|
|
2613 DEFUN ("file-newer-than-file-p", Ffile_newer_than_file_p, 2, 2, 0, /*
|
|
|
2614 Return t if file FILE1 is newer than file FILE2.
|
|
|
2615 If FILE1 does not exist, the answer is nil;
|
|
|
2616 otherwise, if FILE2 does not exist, the answer is t.
|
|
|
2617 */
|
|
|
2618 (file1, file2))
|
|
|
2619 {
|
|
|
2620 /* This function can GC. GC checked 1997.04.10. */
|
|
|
2621 Lisp_Object abspath1, abspath2;
|
|
|
2622 struct stat st;
|
|
|
2623 int mtime1;
|
|
|
2624 Lisp_Object handler;
|
|
|
2625 struct gcpro gcpro1, gcpro2, gcpro3;
|
|
|
2626
|
|
|
2627 CHECK_STRING (file1);
|
|
|
2628 CHECK_STRING (file2);
|
|
|
2629
|
|
|
2630 abspath1 = Qnil;
|
|
|
2631 abspath2 = Qnil;
|
|
|
2632
|
|
|
2633 GCPRO3 (abspath1, abspath2, current_buffer->directory);
|
|
|
2634 abspath1 = expand_and_dir_to_file (file1, current_buffer->directory);
|
|
|
2635 abspath2 = expand_and_dir_to_file (file2, current_buffer->directory);
|
|
|
2636
|
|
|
2637 /* If the file name has special constructs in it,
|
|
|
2638 call the corresponding file handler. */
|
|
|
2639 handler = Ffind_file_name_handler (abspath1, Qfile_newer_than_file_p);
|
|
|
2640 if (NILP (handler))
|
|
|
2641 handler = Ffind_file_name_handler (abspath2, Qfile_newer_than_file_p);
|
|
|
2642 UNGCPRO;
|
|
|
2643 if (!NILP (handler))
|
|
|
2644 return call3 (handler, Qfile_newer_than_file_p, abspath1,
|
|
|
2645 abspath2);
|
|
|
2646
|
|
442
|
2647 if (xemacs_stat ((char *) XSTRING_DATA (abspath1), &st) < 0)
|
|
428
|
2648 return Qnil;
|
|
|
2649
|
|
|
2650 mtime1 = st.st_mtime;
|
|
|
2651
|
|
442
|
2652 if (xemacs_stat ((char *) XSTRING_DATA (abspath2), &st) < 0)
|
|
428
|
2653 return Qt;
|
|
|
2654
|
|
|
2655 return (mtime1 > st.st_mtime) ? Qt : Qnil;
|
|
|
2656 }
|
|
|
2657
|
|
|
2658
|
|
|
2659 /* Stack sizes > 2**16 is a good way to elicit compiler bugs */
|
|
|
2660 /* #define READ_BUF_SIZE (2 << 16) */
|
|
|
2661 #define READ_BUF_SIZE (1 << 15)
|
|
|
2662
|
|
|
2663 DEFUN ("insert-file-contents-internal", Finsert_file_contents_internal,
|
|
|
2664 1, 7, 0, /*
|
|
|
2665 Insert contents of file FILENAME after point; no coding-system frobbing.
|
|
|
2666 This function is identical to `insert-file-contents' except for the
|
|
|
2667 handling of the CODESYS and USED-CODESYS arguments under
|
|
|
2668 XEmacs/Mule. (When Mule support is not present, both functions are
|
|
|
2669 identical and ignore the CODESYS and USED-CODESYS arguments.)
|
|
|
2670
|
|
|
2671 If support for Mule exists in this Emacs, the file is decoded according
|
|
|
2672 to CODESYS; if omitted, no conversion happens. If USED-CODESYS is non-nil,
|
|
|
2673 it should be a symbol, and the actual coding system that was used for the
|
|
|
2674 decoding is stored into it. It will in general be different from CODESYS
|
|
|
2675 if CODESYS specifies automatic encoding detection or end-of-line detection.
|
|
|
2676
|
|
444
|
2677 Currently START and END refer to byte positions (as opposed to character
|
|
428
|
2678 positions), even in Mule. (Fixing this is very difficult.)
|
|
|
2679 */
|
|
444
|
2680 (filename, visit, start, end, replace, codesys, used_codesys))
|
|
428
|
2681 {
|
|
|
2682 /* This function can call lisp */
|
|
|
2683 struct stat st;
|
|
|
2684 int fd;
|
|
|
2685 int saverrno = 0;
|
|
|
2686 Charcount inserted = 0;
|
|
|
2687 int speccount;
|
|
|
2688 struct gcpro gcpro1, gcpro2, gcpro3, gcpro4, gcpro5;
|
|
|
2689 Lisp_Object handler = Qnil, val;
|
|
|
2690 int total;
|
|
|
2691 Bufbyte read_buf[READ_BUF_SIZE];
|
|
|
2692 int mc_count;
|
|
|
2693 struct buffer *buf = current_buffer;
|
|
|
2694 Lisp_Object curbuf;
|
|
|
2695 int not_regular = 0;
|
|
|
2696
|
|
|
2697 if (buf->base_buffer && ! NILP (visit))
|
|
|
2698 error ("Cannot do file visiting in an indirect buffer");
|
|
|
2699
|
|
|
2700 /* No need to call Fbarf_if_buffer_read_only() here.
|
|
|
2701 That's called in begin_multiple_change() or wherever. */
|
|
|
2702
|
|
|
2703 val = Qnil;
|
|
|
2704
|
|
|
2705 /* #### dmoore - should probably check in various places to see if
|
|
|
2706 curbuf was killed and if so signal an error? */
|
|
|
2707
|
|
|
2708 XSETBUFFER (curbuf, buf);
|
|
|
2709
|
|
|
2710 GCPRO5 (filename, val, visit, handler, curbuf);
|
|
|
2711
|
|
|
2712 mc_count = (NILP (replace)) ?
|
|
|
2713 begin_multiple_change (buf, BUF_PT (buf), BUF_PT (buf)) :
|
|
|
2714 begin_multiple_change (buf, BUF_BEG (buf), BUF_Z (buf));
|
|
|
2715
|
|
|
2716 speccount = specpdl_depth (); /* begin_multiple_change also adds
|
|
|
2717 an unwind_protect */
|
|
|
2718
|
|
|
2719 filename = Fexpand_file_name (filename, Qnil);
|
|
|
2720
|
|
|
2721 /* If the file name has special constructs in it,
|
|
|
2722 call the corresponding file handler. */
|
|
|
2723 handler = Ffind_file_name_handler (filename, Qinsert_file_contents);
|
|
|
2724 if (!NILP (handler))
|
|
|
2725 {
|
|
|
2726 val = call6 (handler, Qinsert_file_contents, filename,
|
|
444
|
2727 visit, start, end, replace);
|
|
428
|
2728 goto handled;
|
|
|
2729 }
|
|
|
2730
|
|
|
2731 #ifdef FILE_CODING
|
|
|
2732 if (!NILP (used_codesys))
|
|
|
2733 CHECK_SYMBOL (used_codesys);
|
|
|
2734 #endif
|
|
|
2735
|
|
444
|
2736 if ( (!NILP (start) || !NILP (end)) && !NILP (visit) )
|
|
428
|
2737 error ("Attempt to visit less than an entire file");
|
|
|
2738
|
|
|
2739 fd = -1;
|
|
|
2740
|
|
442
|
2741 if (xemacs_stat ((char *) XSTRING_DATA (filename), &st) < 0)
|
|
428
|
2742 {
|
|
|
2743 if (fd >= 0) close (fd);
|
|
|
2744 badopen:
|
|
|
2745 if (NILP (visit))
|
|
|
2746 report_file_error ("Opening input file", list1 (filename));
|
|
|
2747 st.st_mtime = -1;
|
|
|
2748 goto notfound;
|
|
|
2749 }
|
|
|
2750
|
|
|
2751 #ifdef S_IFREG
|
|
|
2752 /* Signal an error if we are accessing a non-regular file, with
|
|
444
|
2753 REPLACE, START or END being non-nil. */
|
|
428
|
2754 if (!S_ISREG (st.st_mode))
|
|
|
2755 {
|
|
|
2756 not_regular = 1;
|
|
|
2757
|
|
|
2758 if (!NILP (visit))
|
|
|
2759 goto notfound;
|
|
|
2760
|
|
444
|
2761 if (!NILP (replace) || !NILP (start) || !NILP (end))
|
|
428
|
2762 {
|
|
|
2763 end_multiple_change (buf, mc_count);
|
|
|
2764
|
|
444
|
2765 RETURN_UNGCPRO
|
|
|
2766 (Fsignal (Qfile_error,
|
|
|
2767 list2 (build_translated_string("not a regular file"),
|
|
|
2768 filename)));
|
|
428
|
2769 }
|
|
|
2770 }
|
|
|
2771 #endif /* S_IFREG */
|
|
|
2772
|
|
444
|
2773 if (!NILP (start))
|
|
|
2774 CHECK_INT (start);
|
|
428
|
2775 else
|
|
444
|
2776 start = Qzero;
|
|
428
|
2777
|
|
|
2778 if (!NILP (end))
|
|
|
2779 CHECK_INT (end);
|
|
|
2780
|
|
|
2781 if (fd < 0)
|
|
|
2782 {
|
|
|
2783 if ((fd = interruptible_open ((char *) XSTRING_DATA (filename),
|
|
|
2784 O_RDONLY | OPEN_BINARY, 0)) < 0)
|
|
|
2785 goto badopen;
|
|
|
2786 }
|
|
|
2787
|
|
|
2788 /* Replacement should preserve point as it preserves markers. */
|
|
|
2789 if (!NILP (replace))
|
|
|
2790 record_unwind_protect (restore_point_unwind, Fpoint_marker (Qnil, Qnil));
|
|
|
2791
|
|
|
2792 record_unwind_protect (close_file_unwind, make_int (fd));
|
|
|
2793
|
|
|
2794 /* Supposedly happens on VMS. */
|
|
|
2795 if (st.st_size < 0)
|
|
|
2796 error ("File size is negative");
|
|
|
2797
|
|
|
2798 if (NILP (end))
|
|
|
2799 {
|
|
|
2800 if (!not_regular)
|
|
|
2801 {
|
|
|
2802 end = make_int (st.st_size);
|
|
|
2803 if (XINT (end) != st.st_size)
|
|
|
2804 error ("Maximum buffer size exceeded");
|
|
|
2805 }
|
|
|
2806 }
|
|
|
2807
|
|
|
2808 /* If requested, replace the accessible part of the buffer
|
|
|
2809 with the file contents. Avoid replacing text at the
|
|
|
2810 beginning or end of the buffer that matches the file contents;
|
|
|
2811 that preserves markers pointing to the unchanged parts. */
|
|
|
2812 #if !defined (FILE_CODING)
|
|
|
2813 /* The replace-mode code currently only works when the assumption
|
|
|
2814 'one byte == one char' holds true. This fails Mule because
|
|
|
2815 files may contain multibyte characters. It holds under Windows NT
|
|
|
2816 provided we convert CRLF into LF. */
|
|
|
2817 # define FSFMACS_SPEEDY_INSERT
|
|
|
2818 #endif /* !defined (FILE_CODING) */
|
|
|
2819
|
|
|
2820 #ifndef FSFMACS_SPEEDY_INSERT
|
|
|
2821 if (!NILP (replace))
|
|
|
2822 {
|
|
|
2823 buffer_delete_range (buf, BUF_BEG (buf), BUF_Z (buf),
|
|
|
2824 !NILP (visit) ? INSDEL_NO_LOCKING : 0);
|
|
|
2825 }
|
|
|
2826 #else /* FSFMACS_SPEEDY_INSERT */
|
|
|
2827 if (!NILP (replace))
|
|
|
2828 {
|
|
|
2829 char buffer[1 << 14];
|
|
|
2830 Bufpos same_at_start = BUF_BEGV (buf);
|
|
|
2831 Bufpos same_at_end = BUF_ZV (buf);
|
|
|
2832 int overlap;
|
|
|
2833
|
|
|
2834 /* Count how many chars at the start of the file
|
|
|
2835 match the text at the beginning of the buffer. */
|
|
|
2836 while (1)
|
|
|
2837 {
|
|
|
2838 int nread;
|
|
|
2839 Bufpos bufpos;
|
|
|
2840 nread = read_allowing_quit (fd, buffer, sizeof buffer);
|
|
|
2841 if (nread < 0)
|
|
|
2842 error ("IO error reading %s: %s",
|
|
|
2843 XSTRING_DATA (filename), strerror (errno));
|
|
|
2844 else if (nread == 0)
|
|
|
2845 break;
|
|
|
2846 bufpos = 0;
|
|
|
2847 while (bufpos < nread && same_at_start < BUF_ZV (buf)
|
|
|
2848 && BUF_FETCH_CHAR (buf, same_at_start) == buffer[bufpos])
|
|
|
2849 same_at_start++, bufpos++;
|
|
|
2850 /* If we found a discrepancy, stop the scan.
|
|
|
2851 Otherwise loop around and scan the next bufferful. */
|
|
|
2852 if (bufpos != nread)
|
|
|
2853 break;
|
|
|
2854 }
|
|
|
2855 /* If the file matches the buffer completely,
|
|
|
2856 there's no need to replace anything. */
|
|
|
2857 if (same_at_start - BUF_BEGV (buf) == st.st_size)
|
|
|
2858 {
|
|
|
2859 close (fd);
|
|
|
2860 unbind_to (speccount, Qnil);
|
|
|
2861 /* Truncate the buffer to the size of the file. */
|
|
|
2862 buffer_delete_range (buf, same_at_start, same_at_end,
|
|
|
2863 !NILP (visit) ? INSDEL_NO_LOCKING : 0);
|
|
|
2864 goto handled;
|
|
|
2865 }
|
|
|
2866 /* Count how many chars at the end of the file
|
|
|
2867 match the text at the end of the buffer. */
|
|
|
2868 while (1)
|
|
|
2869 {
|
|
|
2870 int total_read, nread;
|
|
|
2871 Bufpos bufpos, curpos, trial;
|
|
|
2872
|
|
|
2873 /* At what file position are we now scanning? */
|
|
|
2874 curpos = st.st_size - (BUF_ZV (buf) - same_at_end);
|
|
|
2875 /* If the entire file matches the buffer tail, stop the scan. */
|
|
|
2876 if (curpos == 0)
|
|
|
2877 break;
|
|
|
2878 /* How much can we scan in the next step? */
|
|
|
2879 trial = min (curpos, (Bufpos) sizeof (buffer));
|
|
|
2880 if (lseek (fd, curpos - trial, 0) < 0)
|
|
|
2881 report_file_error ("Setting file position", list1 (filename));
|
|
|
2882
|
|
|
2883 total_read = 0;
|
|
|
2884 while (total_read < trial)
|
|
|
2885 {
|
|
|
2886 nread = read_allowing_quit (fd, buffer + total_read,
|
|
|
2887 trial - total_read);
|
|
|
2888 if (nread <= 0)
|
|
|
2889 report_file_error ("IO error reading file", list1 (filename));
|
|
|
2890 total_read += nread;
|
|
|
2891 }
|
|
|
2892 /* Scan this bufferful from the end, comparing with
|
|
|
2893 the Emacs buffer. */
|
|
|
2894 bufpos = total_read;
|
|
|
2895 /* Compare with same_at_start to avoid counting some buffer text
|
|
|
2896 as matching both at the file's beginning and at the end. */
|
|
|
2897 while (bufpos > 0 && same_at_end > same_at_start
|
|
|
2898 && BUF_FETCH_CHAR (buf, same_at_end - 1) ==
|
|
|
2899 buffer[bufpos - 1])
|
|
|
2900 same_at_end--, bufpos--;
|
|
|
2901 /* If we found a discrepancy, stop the scan.
|
|
|
2902 Otherwise loop around and scan the preceding bufferful. */
|
|
|
2903 if (bufpos != 0)
|
|
|
2904 break;
|
|
|
2905 /* If display current starts at beginning of line,
|
|
|
2906 keep it that way. */
|
|
|
2907 if (XBUFFER (XWINDOW (Fselected_window (Qnil))->buffer) == buf)
|
|
|
2908 XWINDOW (Fselected_window (Qnil))->start_at_line_beg =
|
|
|
2909 !NILP (Fbolp (make_buffer (buf)));
|
|
|
2910 }
|
|
|
2911
|
|
|
2912 /* Don't try to reuse the same piece of text twice. */
|
|
|
2913 overlap = same_at_start - BUF_BEGV (buf) -
|
|
|
2914 (same_at_end + st.st_size - BUF_ZV (buf));
|
|
|
2915 if (overlap > 0)
|
|
|
2916 same_at_end += overlap;
|
|
|
2917
|
|
|
2918 /* Arrange to read only the nonmatching middle part of the file. */
|
|
444
|
2919 start = make_int (same_at_start - BUF_BEGV (buf));
|
|
428
|
2920 end = make_int (st.st_size - (BUF_ZV (buf) - same_at_end));
|
|
|
2921
|
|
|
2922 buffer_delete_range (buf, same_at_start, same_at_end,
|
|
|
2923 !NILP (visit) ? INSDEL_NO_LOCKING : 0);
|
|
|
2924 /* Insert from the file at the proper position. */
|
|
|
2925 BUF_SET_PT (buf, same_at_start);
|
|
|
2926 }
|
|
|
2927 #endif /* FSFMACS_SPEEDY_INSERT */
|
|
|
2928
|
|
|
2929 if (!not_regular)
|
|
|
2930 {
|
|
444
|
2931 total = XINT (end) - XINT (start);
|
|
428
|
2932
|
|
|
2933 /* Make sure point-max won't overflow after this insertion. */
|
|
|
2934 if (total != XINT (make_int (total)))
|
|
|
2935 error ("Maximum buffer size exceeded");
|
|
|
2936 }
|
|
|
2937 else
|
|
|
2938 /* For a special file, all we can do is guess. The value of -1
|
|
|
2939 will make the stream functions read as much as possible. */
|
|
|
2940 total = -1;
|
|
|
2941
|
|
444
|
2942 if (XINT (start) != 0
|
|
428
|
2943 #ifdef FSFMACS_SPEEDY_INSERT
|
|
|
2944 /* why was this here? asked jwz. The reason is that the replace-mode
|
|
|
2945 connivings above will normally put the file pointer other than
|
|
|
2946 where it should be. */
|
|
|
2947 || !NILP (replace)
|
|
|
2948 #endif /* !FSFMACS_SPEEDY_INSERT */
|
|
|
2949 )
|
|
|
2950 {
|
|
444
|
2951 if (lseek (fd, XINT (start), 0) < 0)
|
|
428
|
2952 report_file_error ("Setting file position", list1 (filename));
|
|
|
2953 }
|
|
|
2954
|
|
|
2955 {
|
|
|
2956 Bufpos cur_point = BUF_PT (buf);
|
|
|
2957 struct gcpro ngcpro1;
|
|
|
2958 Lisp_Object stream = make_filedesc_input_stream (fd, 0, total,
|
|
|
2959 LSTR_ALLOW_QUIT);
|
|
|
2960
|
|
|
2961 NGCPRO1 (stream);
|
|
|
2962 Lstream_set_buffering (XLSTREAM (stream), LSTREAM_BLOCKN_BUFFERED, 65536);
|
|
|
2963 #ifdef FILE_CODING
|
|
|
2964 stream = make_decoding_input_stream
|
|
|
2965 (XLSTREAM (stream), Fget_coding_system (codesys));
|
|
|
2966 Lstream_set_character_mode (XLSTREAM (stream));
|
|
|
2967 Lstream_set_buffering (XLSTREAM (stream), LSTREAM_BLOCKN_BUFFERED, 65536);
|
|
|
2968 #endif /* FILE_CODING */
|
|
|
2969
|
|
|
2970 record_unwind_protect (delete_stream_unwind, stream);
|
|
|
2971
|
|
|
2972 /* No need to limit the amount of stuff we attempt to read. (It would
|
|
|
2973 be incorrect, anyway, when Mule is enabled.) Instead, the limiting
|
|
|
2974 occurs inside of the filedesc stream. */
|
|
|
2975 while (1)
|
|
|
2976 {
|
|
|
2977 ssize_t this_len;
|
|
|
2978 Charcount cc_inserted;
|
|
|
2979
|
|
|
2980 QUIT;
|
|
|
2981 this_len = Lstream_read (XLSTREAM (stream), read_buf,
|
|
|
2982 sizeof (read_buf));
|
|
|
2983
|
|
|
2984 if (this_len <= 0)
|
|
|
2985 {
|
|
|
2986 if (this_len < 0)
|
|
|
2987 saverrno = errno;
|
|
|
2988 break;
|
|
|
2989 }
|
|
|
2990
|
|
|
2991 cc_inserted = buffer_insert_raw_string_1 (buf, cur_point, read_buf,
|
|
|
2992 this_len,
|
|
|
2993 !NILP (visit)
|
|
|
2994 ? INSDEL_NO_LOCKING : 0);
|
|
|
2995 inserted += cc_inserted;
|
|
|
2996 cur_point += cc_inserted;
|
|
|
2997 }
|
|
|
2998 #ifdef FILE_CODING
|
|
|
2999 if (!NILP (used_codesys))
|
|
|
3000 {
|
|
|
3001 Fset (used_codesys,
|
|
|
3002 XCODING_SYSTEM_NAME (decoding_stream_coding_system (XLSTREAM (stream))));
|
|
|
3003 }
|
|
|
3004 #endif /* FILE_CODING */
|
|
|
3005 NUNGCPRO;
|
|
|
3006 }
|
|
|
3007
|
|
|
3008 /* Close the file/stream */
|
|
|
3009 unbind_to (speccount, Qnil);
|
|
|
3010
|
|
|
3011 if (saverrno != 0)
|
|
|
3012 {
|
|
|
3013 error ("IO error reading %s: %s",
|
|
|
3014 XSTRING_DATA (filename), strerror (saverrno));
|
|
|
3015 }
|
|
|
3016
|
|
|
3017 notfound:
|
|
|
3018 handled:
|
|
|
3019
|
|
|
3020 end_multiple_change (buf, mc_count);
|
|
|
3021
|
|
|
3022 if (!NILP (visit))
|
|
|
3023 {
|
|
|
3024 if (!EQ (buf->undo_list, Qt))
|
|
|
3025 buf->undo_list = Qnil;
|
|
|
3026 if (NILP (handler))
|
|
|
3027 {
|
|
|
3028 buf->modtime = st.st_mtime;
|
|
|
3029 buf->filename = filename;
|
|
|
3030 /* XEmacs addition: */
|
|
|
3031 /* This function used to be in C, ostensibly so that
|
|
|
3032 it could be called here. But that's just silly.
|
|
|
3033 There's no reason C code can't call out to Lisp
|
|
|
3034 code, and it's a lot cleaner this way. */
|
|
444
|
3035 /* Note: compute-buffer-file-truename is called for
|
|
|
3036 side-effect! Its return value is intentionally
|
|
|
3037 ignored. */
|
|
428
|
3038 if (!NILP (Ffboundp (Qcompute_buffer_file_truename)))
|
|
|
3039 call1 (Qcompute_buffer_file_truename, make_buffer (buf));
|
|
|
3040 }
|
|
|
3041 BUF_SAVE_MODIFF (buf) = BUF_MODIFF (buf);
|
|
|
3042 buf->auto_save_modified = BUF_MODIFF (buf);
|
|
|
3043 buf->saved_size = make_int (BUF_SIZE (buf));
|
|
|
3044 #ifdef CLASH_DETECTION
|
|
|
3045 if (NILP (handler))
|
|
|
3046 {
|
|
|
3047 if (!NILP (buf->file_truename))
|
|
|
3048 unlock_file (buf->file_truename);
|
|
|
3049 unlock_file (filename);
|
|
|
3050 }
|
|
|
3051 #endif /* CLASH_DETECTION */
|
|
|
3052 if (not_regular)
|
|
|
3053 RETURN_UNGCPRO (Fsignal (Qfile_error,
|
|
|
3054 list2 (build_string ("not a regular file"),
|
|
|
3055 filename)));
|
|
|
3056
|
|
|
3057 /* If visiting nonexistent file, return nil. */
|
|
|
3058 if (buf->modtime == -1)
|
|
|
3059 report_file_error ("Opening input file",
|
|
|
3060 list1 (filename));
|
|
|
3061 }
|
|
|
3062
|
|
|
3063 /* Decode file format */
|
|
|
3064 if (inserted > 0)
|
|
|
3065 {
|
|
|
3066 Lisp_Object insval = call3 (Qformat_decode,
|
|
|
3067 Qnil, make_int (inserted), visit);
|
|
|
3068 CHECK_INT (insval);
|
|
|
3069 inserted = XINT (insval);
|
|
|
3070 }
|
|
|
3071
|
|
|
3072 if (inserted > 0)
|
|
|
3073 {
|
|
|
3074 Lisp_Object p;
|
|
|
3075 struct gcpro ngcpro1;
|
|
|
3076
|
|
|
3077 NGCPRO1 (p);
|
|
|
3078 EXTERNAL_LIST_LOOP (p, Vafter_insert_file_functions)
|
|
|
3079 {
|
|
|
3080 Lisp_Object insval =
|
|
|
3081 call1 (XCAR (p), make_int (inserted));
|
|
|
3082 if (!NILP (insval))
|
|
|
3083 {
|
|
|
3084 CHECK_NATNUM (insval);
|
|
|
3085 inserted = XINT (insval);
|
|
|
3086 }
|
|
|
3087 QUIT;
|
|
|
3088 }
|
|
|
3089 NUNGCPRO;
|
|
|
3090 }
|
|
|
3091
|
|
|
3092 UNGCPRO;
|
|
|
3093
|
|
|
3094 if (!NILP (val))
|
|
|
3095 return (val);
|
|
|
3096 else
|
|
|
3097 return (list2 (filename, make_int (inserted)));
|
|
|
3098 }
|
|
|
3099
|
|
|
3100
|
|
|
3101 static int a_write (Lisp_Object outstream, Lisp_Object instream, int pos,
|
|
|
3102 Lisp_Object *annot);
|
|
|
3103 static Lisp_Object build_annotations (Lisp_Object start, Lisp_Object end);
|
|
|
3104
|
|
|
3105 /* If build_annotations switched buffers, switch back to BUF.
|
|
|
3106 Kill the temporary buffer that was selected in the meantime. */
|
|
|
3107
|
|
|
3108 static Lisp_Object
|
|
|
3109 build_annotations_unwind (Lisp_Object buf)
|
|
|
3110 {
|
|
|
3111 Lisp_Object tembuf;
|
|
|
3112
|
|
|
3113 if (XBUFFER (buf) == current_buffer)
|
|
|
3114 return Qnil;
|
|
|
3115 tembuf = Fcurrent_buffer ();
|
|
|
3116 Fset_buffer (buf);
|
|
|
3117 Fkill_buffer (tembuf);
|
|
|
3118 return Qnil;
|
|
|
3119 }
|
|
|
3120
|
|
|
3121 DEFUN ("write-region-internal", Fwrite_region_internal, 3, 7,
|
|
|
3122 "r\nFWrite region to file: ", /*
|
|
|
3123 Write current region into specified file; no coding-system frobbing.
|
|
|
3124 This function is identical to `write-region' except for the handling
|
|
|
3125 of the CODESYS argument under XEmacs/Mule. (When Mule support is not
|
|
|
3126 present, both functions are identical and ignore the CODESYS argument.)
|
|
|
3127 If support for Mule exists in this Emacs, the file is encoded according
|
|
|
3128 to the value of CODESYS. If this is nil, no code conversion occurs.
|
|
|
3129 */
|
|
|
3130 (start, end, filename, append, visit, lockname, codesys))
|
|
|
3131 {
|
|
442
|
3132 /* This function can call lisp. GC checked 2000-07-28 ben */
|
|
428
|
3133 int desc;
|
|
|
3134 int failure;
|
|
|
3135 int save_errno = 0;
|
|
|
3136 struct stat st;
|
|
442
|
3137 Lisp_Object fn = Qnil;
|
|
428
|
3138 int speccount = specpdl_depth ();
|
|
|
3139 int visiting_other = STRINGP (visit);
|
|
|
3140 int visiting = (EQ (visit, Qt) || visiting_other);
|
|
|
3141 int quietly = (!visiting && !NILP (visit));
|
|
|
3142 Lisp_Object visit_file = Qnil;
|
|
|
3143 Lisp_Object annotations = Qnil;
|
|
|
3144 struct buffer *given_buffer;
|
|
|
3145 Bufpos start1, end1;
|
|
442
|
3146 struct gcpro gcpro1, gcpro2, gcpro3, gcpro4, gcpro5;
|
|
|
3147 struct gcpro ngcpro1, ngcpro2;
|
|
|
3148 Lisp_Object curbuf;
|
|
|
3149
|
|
|
3150 XSETBUFFER (curbuf, current_buffer);
|
|
|
3151
|
|
|
3152 /* start, end, visit, and append are never modified in this fun
|
|
|
3153 so we don't protect them. */
|
|
|
3154 GCPRO5 (visit_file, filename, codesys, lockname, annotations);
|
|
|
3155 NGCPRO2 (curbuf, fn);
|
|
|
3156
|
|
|
3157 /* [[ dmoore - if Fexpand_file_name or handlers kill the buffer,
|
|
428
|
3158 we should signal an error rather than blissfully continuing
|
|
|
3159 along. ARGH, this function is going to lose lose lose. We need
|
|
|
3160 to protect the current_buffer from being destroyed, but the
|
|
442
|
3161 multiple return points make this a pain in the butt. ]] we do
|
|
|
3162 protect curbuf now. --ben */
|
|
428
|
3163
|
|
|
3164 #ifdef FILE_CODING
|
|
|
3165 codesys = Fget_coding_system (codesys);
|
|
|
3166 #endif /* FILE_CODING */
|
|
|
3167
|
|
|
3168 if (current_buffer->base_buffer && ! NILP (visit))
|
|
442
|
3169 invalid_operation ("Cannot do file visiting in an indirect buffer",
|
|
|
3170 curbuf);
|
|
428
|
3171
|
|
|
3172 if (!NILP (start) && !STRINGP (start))
|
|
|
3173 get_buffer_range_char (current_buffer, start, end, &start1, &end1, 0);
|
|
|
3174
|
|
|
3175 {
|
|
|
3176 Lisp_Object handler;
|
|
|
3177
|
|
|
3178 if (visiting_other)
|
|
|
3179 visit_file = Fexpand_file_name (visit, Qnil);
|
|
|
3180 else
|
|
|
3181 visit_file = filename;
|
|
|
3182 filename = Fexpand_file_name (filename, Qnil);
|
|
|
3183
|
|
|
3184 if (NILP (lockname))
|
|
|
3185 lockname = visit_file;
|
|
|
3186
|
|
442
|
3187 /* We used to UNGCPRO here. BAD! visit_file is used below after
|
|
|
3188 more Lisp calling. */
|
|
428
|
3189 /* If the file name has special constructs in it,
|
|
|
3190 call the corresponding file handler. */
|
|
|
3191 handler = Ffind_file_name_handler (filename, Qwrite_region);
|
|
|
3192 /* If FILENAME has no handler, see if VISIT has one. */
|
|
|
3193 if (NILP (handler) && STRINGP (visit))
|
|
|
3194 handler = Ffind_file_name_handler (visit, Qwrite_region);
|
|
|
3195
|
|
|
3196 if (!NILP (handler))
|
|
|
3197 {
|
|
|
3198 Lisp_Object val = call8 (handler, Qwrite_region, start, end,
|
|
|
3199 filename, append, visit, lockname, codesys);
|
|
|
3200 if (visiting)
|
|
|
3201 {
|
|
|
3202 BUF_SAVE_MODIFF (current_buffer) = BUF_MODIFF (current_buffer);
|
|
|
3203 current_buffer->saved_size = make_int (BUF_SIZE (current_buffer));
|
|
|
3204 current_buffer->filename = visit_file;
|
|
|
3205 MARK_MODELINE_CHANGED;
|
|
|
3206 }
|
|
442
|
3207 NUNGCPRO;
|
|
|
3208 UNGCPRO;
|
|
428
|
3209 return val;
|
|
|
3210 }
|
|
|
3211 }
|
|
|
3212
|
|
|
3213 #ifdef CLASH_DETECTION
|
|
|
3214 if (!auto_saving)
|
|
442
|
3215 lock_file (lockname);
|
|
428
|
3216 #endif /* CLASH_DETECTION */
|
|
|
3217
|
|
|
3218 /* Special kludge to simplify auto-saving. */
|
|
|
3219 if (NILP (start))
|
|
|
3220 {
|
|
|
3221 start1 = BUF_BEG (current_buffer);
|
|
|
3222 end1 = BUF_Z (current_buffer);
|
|
|
3223 }
|
|
|
3224
|
|
|
3225 record_unwind_protect (build_annotations_unwind, Fcurrent_buffer ());
|
|
|
3226
|
|
|
3227 given_buffer = current_buffer;
|
|
|
3228 annotations = build_annotations (start, end);
|
|
|
3229 if (current_buffer != given_buffer)
|
|
|
3230 {
|
|
|
3231 start1 = BUF_BEGV (current_buffer);
|
|
|
3232 end1 = BUF_ZV (current_buffer);
|
|
|
3233 }
|
|
|
3234
|
|
|
3235 fn = filename;
|
|
|
3236 desc = -1;
|
|
|
3237 if (!NILP (append))
|
|
|
3238 {
|
|
|
3239 desc = open ((char *) XSTRING_DATA (fn), O_WRONLY | OPEN_BINARY, 0);
|
|
|
3240 }
|
|
|
3241 if (desc < 0)
|
|
|
3242 {
|
|
|
3243 desc = open ((char *) XSTRING_DATA (fn),
|
|
442
|
3244 O_WRONLY | O_TRUNC | O_CREAT | OPEN_BINARY,
|
|
|
3245 auto_saving ? auto_save_mode_bits : CREAT_MODE);
|
|
428
|
3246 }
|
|
|
3247
|
|
|
3248 if (desc < 0)
|
|
|
3249 {
|
|
|
3250 #ifdef CLASH_DETECTION
|
|
|
3251 save_errno = errno;
|
|
|
3252 if (!auto_saving) unlock_file (lockname);
|
|
|
3253 errno = save_errno;
|
|
|
3254 #endif /* CLASH_DETECTION */
|
|
|
3255 report_file_error ("Opening output file", list1 (filename));
|
|
|
3256 }
|
|
|
3257
|
|
|
3258 {
|
|
|
3259 Lisp_Object desc_locative = Fcons (make_int (desc), Qnil);
|
|
|
3260 Lisp_Object instream = Qnil, outstream = Qnil;
|
|
442
|
3261 struct gcpro nngcpro1, nngcpro2;
|
|
428
|
3262 /* need to gcpro; QUIT could happen out of call to write() */
|
|
442
|
3263 NNGCPRO2 (instream, outstream);
|
|
428
|
3264
|
|
|
3265 record_unwind_protect (close_file_unwind, desc_locative);
|
|
|
3266
|
|
|
3267 if (!NILP (append))
|
|
|
3268 {
|
|
|
3269 if (lseek (desc, 0, 2) < 0)
|
|
|
3270 {
|
|
|
3271 #ifdef CLASH_DETECTION
|
|
|
3272 if (!auto_saving) unlock_file (lockname);
|
|
|
3273 #endif /* CLASH_DETECTION */
|
|
|
3274 report_file_error ("Lseek error",
|
|
|
3275 list1 (filename));
|
|
|
3276 }
|
|
|
3277 }
|
|
|
3278
|
|
|
3279 failure = 0;
|
|
|
3280
|
|
|
3281 /* Note: I tried increasing the buffering size, along with
|
|
|
3282 various other tricks, but nothing seemed to make much of
|
|
|
3283 a difference in the time it took to save a large file.
|
|
|
3284 (Actually that's not true. With a local disk, changing
|
|
|
3285 the buffer size doesn't seem to make much difference.
|
|
|
3286 With an NFS-mounted disk, it could make a lot of difference
|
|
|
3287 because you're affecting the number of network requests
|
|
|
3288 that need to be made, and there could be a large latency
|
|
|
3289 for each request. So I've increased the buffer size
|
|
|
3290 to 64K.) */
|
|
|
3291 outstream = make_filedesc_output_stream (desc, 0, -1, 0);
|
|
|
3292 Lstream_set_buffering (XLSTREAM (outstream),
|
|
|
3293 LSTREAM_BLOCKN_BUFFERED, 65536);
|
|
|
3294 #ifdef FILE_CODING
|
|
|
3295 outstream =
|
|
|
3296 make_encoding_output_stream (XLSTREAM (outstream), codesys);
|
|
|
3297 Lstream_set_buffering (XLSTREAM (outstream),
|
|
|
3298 LSTREAM_BLOCKN_BUFFERED, 65536);
|
|
|
3299 #endif /* FILE_CODING */
|
|
|
3300 if (STRINGP (start))
|
|
|
3301 {
|
|
|
3302 instream = make_lisp_string_input_stream (start, 0, -1);
|
|
|
3303 start1 = 0;
|
|
|
3304 }
|
|
|
3305 else
|
|
|
3306 instream = make_lisp_buffer_input_stream (current_buffer, start1, end1,
|
|
|
3307 LSTR_SELECTIVE |
|
|
|
3308 LSTR_IGNORE_ACCESSIBLE);
|
|
|
3309 failure = (0 > (a_write (outstream, instream, start1,
|
|
|
3310 &annotations)));
|
|
|
3311 save_errno = errno;
|
|
|
3312 /* Note that this doesn't close the desc since we created the
|
|
|
3313 stream without the LSTR_CLOSING flag, but it does
|
|
|
3314 flush out any buffered data. */
|
|
|
3315 if (Lstream_close (XLSTREAM (outstream)) < 0)
|
|
|
3316 {
|
|
|
3317 failure = 1;
|
|
|
3318 save_errno = errno;
|
|
|
3319 }
|
|
|
3320 Lstream_close (XLSTREAM (instream));
|
|
|
3321
|
|
|
3322 #ifdef HAVE_FSYNC
|
|
|
3323 /* Note fsync appears to change the modtime on BSD4.2 (both vax and sun).
|
|
|
3324 Disk full in NFS may be reported here. */
|
|
|
3325 /* mib says that closing the file will try to write as fast as NFS can do
|
|
|
3326 it, and that means the fsync here is not crucial for autosave files. */
|
|
|
3327 if (!auto_saving && fsync (desc) < 0
|
|
|
3328 /* If fsync fails with EINTR, don't treat that as serious. */
|
|
|
3329 && errno != EINTR)
|
|
|
3330 {
|
|
|
3331 failure = 1;
|
|
|
3332 save_errno = errno;
|
|
|
3333 }
|
|
|
3334 #endif /* HAVE_FSYNC */
|
|
|
3335
|
|
440
|
3336 /* Spurious "file has changed on disk" warnings used to be seen on
|
|
|
3337 systems where close() can change the modtime. This is known to
|
|
|
3338 happen on various NFS file systems, on Windows, and on Linux.
|
|
|
3339 Rather than handling this on a per-system basis, we
|
|
442
|
3340 unconditionally do the xemacs_stat() after the close(). */
|
|
428
|
3341
|
|
|
3342 /* NFS can report a write failure now. */
|
|
|
3343 if (close (desc) < 0)
|
|
|
3344 {
|
|
|
3345 failure = 1;
|
|
|
3346 save_errno = errno;
|
|
|
3347 }
|
|
|
3348
|
|
|
3349 /* Discard the close unwind-protect. Execute the one for
|
|
|
3350 build_annotations (switches back to the original current buffer
|
|
|
3351 as necessary). */
|
|
|
3352 XCAR (desc_locative) = Qnil;
|
|
|
3353 unbind_to (speccount, Qnil);
|
|
442
|
3354
|
|
|
3355 NNUNGCPRO;
|
|
428
|
3356 }
|
|
|
3357
|
|
442
|
3358 xemacs_stat ((char *) XSTRING_DATA (fn), &st);
|
|
428
|
3359
|
|
|
3360 #ifdef CLASH_DETECTION
|
|
|
3361 if (!auto_saving)
|
|
|
3362 unlock_file (lockname);
|
|
|
3363 #endif /* CLASH_DETECTION */
|
|
|
3364
|
|
|
3365 /* Do this before reporting IO error
|
|
|
3366 to avoid a "file has changed on disk" warning on
|
|
|
3367 next attempt to save. */
|
|
|
3368 if (visiting)
|
|
|
3369 current_buffer->modtime = st.st_mtime;
|
|
|
3370
|
|
|
3371 if (failure)
|
|
442
|
3372 {
|
|
|
3373 errno = save_errno;
|
|
|
3374 report_file_error ("Writing file", list1 (fn));
|
|
|
3375 }
|
|
428
|
3376
|
|
|
3377 if (visiting)
|
|
|
3378 {
|
|
|
3379 BUF_SAVE_MODIFF (current_buffer) = BUF_MODIFF (current_buffer);
|
|
|
3380 current_buffer->saved_size = make_int (BUF_SIZE (current_buffer));
|
|
|
3381 current_buffer->filename = visit_file;
|
|
|
3382 MARK_MODELINE_CHANGED;
|
|
|
3383 }
|
|
|
3384 else if (quietly)
|
|
|
3385 {
|
|
442
|
3386 NUNGCPRO;
|
|
|
3387 UNGCPRO;
|
|
428
|
3388 return Qnil;
|
|
|
3389 }
|
|
|
3390
|
|
|
3391 if (!auto_saving)
|
|
|
3392 {
|
|
|
3393 if (visiting_other)
|
|
|
3394 message ("Wrote %s", XSTRING_DATA (visit_file));
|
|
|
3395 else
|
|
|
3396 {
|
|
|
3397 Lisp_Object fsp;
|
|
442
|
3398 struct gcpro nngcpro1;
|
|
|
3399
|
|
|
3400 NNGCPRO1 (fsp);
|
|
428
|
3401 fsp = Ffile_symlink_p (fn);
|
|
|
3402 if (NILP (fsp))
|
|
|
3403 message ("Wrote %s", XSTRING_DATA (fn));
|
|
|
3404 else
|
|
|
3405 message ("Wrote %s (symlink to %s)",
|
|
|
3406 XSTRING_DATA (fn), XSTRING_DATA (fsp));
|
|
442
|
3407 NNUNGCPRO;
|
|
428
|
3408 }
|
|
|
3409 }
|
|
442
|
3410 NUNGCPRO;
|
|
|
3411 UNGCPRO;
|
|
428
|
3412 return Qnil;
|
|
|
3413 }
|
|
|
3414
|
|
|
3415 /* #### This is such a load of shit!!!! There is no way we should define
|
|
|
3416 something so stupid as a subr, just sort the fucking list more
|
|
|
3417 intelligently. */
|
|
|
3418 DEFUN ("car-less-than-car", Fcar_less_than_car, 2, 2, 0, /*
|
|
|
3419 Return t if (car A) is numerically less than (car B).
|
|
|
3420 */
|
|
|
3421 (a, b))
|
|
|
3422 {
|
|
|
3423 Lisp_Object objs[2];
|
|
|
3424 objs[0] = Fcar (a);
|
|
|
3425 objs[1] = Fcar (b);
|
|
|
3426 return Flss (2, objs);
|
|
|
3427 }
|
|
|
3428
|
|
|
3429 /* Heh heh heh, let's define this too, just to aggravate the person who
|
|
|
3430 wrote the above comment. */
|
|
|
3431 DEFUN ("cdr-less-than-cdr", Fcdr_less_than_cdr, 2, 2, 0, /*
|
|
|
3432 Return t if (cdr A) is numerically less than (cdr B).
|
|
|
3433 */
|
|
|
3434 (a, b))
|
|
|
3435 {
|
|
|
3436 Lisp_Object objs[2];
|
|
|
3437 objs[0] = Fcdr (a);
|
|
|
3438 objs[1] = Fcdr (b);
|
|
|
3439 return Flss (2, objs);
|
|
|
3440 }
|
|
|
3441
|
|
|
3442 /* Build the complete list of annotations appropriate for writing out
|
|
|
3443 the text between START and END, by calling all the functions in
|
|
|
3444 write-region-annotate-functions and merging the lists they return.
|
|
|
3445 If one of these functions switches to a different buffer, we assume
|
|
|
3446 that buffer contains altered text. Therefore, the caller must
|
|
|
3447 make sure to restore the current buffer in all cases,
|
|
|
3448 as save-excursion would do. */
|
|
|
3449
|
|
|
3450 static Lisp_Object
|
|
|
3451 build_annotations (Lisp_Object start, Lisp_Object end)
|
|
|
3452 {
|
|
|
3453 /* This function can GC */
|
|
|
3454 Lisp_Object annotations;
|
|
|
3455 Lisp_Object p, res;
|
|
|
3456 struct gcpro gcpro1, gcpro2;
|
|
|
3457 Lisp_Object original_buffer;
|
|
|
3458
|
|
|
3459 XSETBUFFER (original_buffer, current_buffer);
|
|
|
3460
|
|
|
3461 annotations = Qnil;
|
|
|
3462 p = Vwrite_region_annotate_functions;
|
|
|
3463 GCPRO2 (annotations, p);
|
|
|
3464 while (!NILP (p))
|
|
|
3465 {
|
|
|
3466 struct buffer *given_buffer = current_buffer;
|
|
|
3467 Vwrite_region_annotations_so_far = annotations;
|
|
|
3468 res = call2 (Fcar (p), start, end);
|
|
|
3469 /* If the function makes a different buffer current,
|
|
|
3470 assume that means this buffer contains altered text to be output.
|
|
|
3471 Reset START and END from the buffer bounds
|
|
|
3472 and discard all previous annotations because they should have
|
|
|
3473 been dealt with by this function. */
|
|
|
3474 if (current_buffer != given_buffer)
|
|
|
3475 {
|
|
|
3476 start = make_int (BUF_BEGV (current_buffer));
|
|
|
3477 end = make_int (BUF_ZV (current_buffer));
|
|
|
3478 annotations = Qnil;
|
|
|
3479 }
|
|
|
3480 Flength (res); /* Check basic validity of return value */
|
|
|
3481 annotations = merge (annotations, res, Qcar_less_than_car);
|
|
|
3482 p = Fcdr (p);
|
|
|
3483 }
|
|
|
3484
|
|
|
3485 /* Now do the same for annotation functions implied by the file-format */
|
|
|
3486 if (auto_saving && (!EQ (Vauto_save_file_format, Qt)))
|
|
|
3487 p = Vauto_save_file_format;
|
|
|
3488 else
|
|
|
3489 p = current_buffer->file_format;
|
|
|
3490 while (!NILP (p))
|
|
|
3491 {
|
|
|
3492 struct buffer *given_buffer = current_buffer;
|
|
|
3493 Vwrite_region_annotations_so_far = annotations;
|
|
|
3494 res = call4 (Qformat_annotate_function, Fcar (p), start, end,
|
|
|
3495 original_buffer);
|
|
|
3496 if (current_buffer != given_buffer)
|
|
|
3497 {
|
|
|
3498 start = make_int (BUF_BEGV (current_buffer));
|
|
|
3499 end = make_int (BUF_ZV (current_buffer));
|
|
|
3500 annotations = Qnil;
|
|
|
3501 }
|
|
|
3502 Flength (res);
|
|
|
3503 annotations = merge (annotations, res, Qcar_less_than_car);
|
|
|
3504 p = Fcdr (p);
|
|
|
3505 }
|
|
|
3506 UNGCPRO;
|
|
|
3507 return annotations;
|
|
|
3508 }
|
|
|
3509
|
|
|
3510 /* Write to stream OUTSTREAM the characters from INSTREAM (it is read until
|
|
|
3511 EOF is encountered), assuming they start at position POS in the buffer
|
|
|
3512 of string that STREAM refers to. Intersperse with them the annotations
|
|
|
3513 from *ANNOT that fall into the range of positions we are reading from,
|
|
|
3514 each at its appropriate position.
|
|
|
3515
|
|
|
3516 Modify *ANNOT by discarding elements as we output them.
|
|
|
3517 The return value is negative in case of system call failure. */
|
|
|
3518
|
|
|
3519 /* 4K should probably be fine. We just need to reduce the number of
|
|
|
3520 function calls to reasonable level. The Lstream stuff itself will
|
|
|
3521 batch to 64K to reduce the number of system calls. */
|
|
|
3522
|
|
|
3523 #define A_WRITE_BATCH_SIZE 4096
|
|
|
3524
|
|
|
3525 static int
|
|
|
3526 a_write (Lisp_Object outstream, Lisp_Object instream, int pos,
|
|
|
3527 Lisp_Object *annot)
|
|
|
3528 {
|
|
|
3529 Lisp_Object tem;
|
|
|
3530 int nextpos;
|
|
|
3531 unsigned char largebuf[A_WRITE_BATCH_SIZE];
|
|
|
3532 Lstream *instr = XLSTREAM (instream);
|
|
|
3533 Lstream *outstr = XLSTREAM (outstream);
|
|
|
3534
|
|
|
3535 while (LISTP (*annot))
|
|
|
3536 {
|
|
|
3537 tem = Fcar_safe (Fcar (*annot));
|
|
|
3538 if (INTP (tem))
|
|
|
3539 nextpos = XINT (tem);
|
|
|
3540 else
|
|
|
3541 nextpos = INT_MAX;
|
|
|
3542 #ifdef MULE
|
|
|
3543 /* If there are annotations left and we have Mule, then we
|
|
|
3544 have to do the I/O one emchar at a time so we can
|
|
|
3545 determine when to insert the annotation. */
|
|
|
3546 if (!NILP (*annot))
|
|
|
3547 {
|
|
|
3548 Emchar ch;
|
|
|
3549 while (pos != nextpos && (ch = Lstream_get_emchar (instr)) != EOF)
|
|
|
3550 {
|
|
|
3551 if (Lstream_put_emchar (outstr, ch) < 0)
|
|
|
3552 return -1;
|
|
|
3553 pos++;
|
|
|
3554 }
|
|
|
3555 }
|
|
|
3556 else
|
|
|
3557 #endif /* MULE */
|
|
|
3558 {
|
|
|
3559 while (pos != nextpos)
|
|
|
3560 {
|
|
|
3561 /* Otherwise there is no point to that. Just go in batches. */
|
|
|
3562 int chunk = min (nextpos - pos, A_WRITE_BATCH_SIZE);
|
|
|
3563
|
|
|
3564 chunk = Lstream_read (instr, largebuf, chunk);
|
|
|
3565 if (chunk < 0)
|
|
|
3566 return -1;
|
|
|
3567 if (chunk == 0) /* EOF */
|
|
|
3568 break;
|
|
|
3569 if (Lstream_write (outstr, largebuf, chunk) < chunk)
|
|
|
3570 return -1;
|
|
|
3571 pos += chunk;
|
|
|
3572 }
|
|
|
3573 }
|
|
|
3574 if (pos == nextpos)
|
|
|
3575 {
|
|
|
3576 tem = Fcdr (Fcar (*annot));
|
|
|
3577 if (STRINGP (tem))
|
|
|
3578 {
|
|
|
3579 if (Lstream_write (outstr, XSTRING_DATA (tem),
|
|
|
3580 XSTRING_LENGTH (tem)) < 0)
|
|
|
3581 return -1;
|
|
|
3582 }
|
|
|
3583 *annot = Fcdr (*annot);
|
|
|
3584 }
|
|
|
3585 else
|
|
|
3586 return 0;
|
|
|
3587 }
|
|
|
3588 return -1;
|
|
|
3589 }
|
|
|
3590
|
|
|
3591
|
|
|
3592
|
|
|
3593 #if 0
|
|
|
3594 #include <des_crypt.h>
|
|
|
3595
|
|
|
3596 #define CRYPT_BLOCK_SIZE 8 /* bytes */
|
|
|
3597 #define CRYPT_KEY_SIZE 8 /* bytes */
|
|
|
3598
|
|
|
3599 DEFUN ("encrypt-string", Fencrypt_string, 2, 2, 0, /*
|
|
|
3600 Encrypt STRING using KEY.
|
|
|
3601 */
|
|
|
3602 (string, key))
|
|
|
3603 {
|
|
|
3604 char *encrypted_string, *raw_key;
|
|
|
3605 int rounded_size, extra, key_size;
|
|
|
3606
|
|
|
3607 /* !!#### May produce bogus data under Mule. */
|
|
|
3608 CHECK_STRING (string);
|
|
|
3609 CHECK_STRING (key);
|
|
|
3610
|
|
|
3611 extra = XSTRING_LENGTH (string) % CRYPT_BLOCK_SIZE;
|
|
|
3612 rounded_size = XSTRING_LENGTH (string) + extra;
|
|
|
3613 encrypted_string = alloca (rounded_size + 1);
|
|
|
3614 memcpy (encrypted_string, XSTRING_DATA (string), XSTRING_LENGTH (string));
|
|
|
3615 memset (encrypted_string + rounded_size - extra, 0, extra + 1);
|
|
|
3616
|
|
|
3617 key_size = min (CRYPT_KEY_SIZE, XSTRING_LENGTH (key))
|
|
|
3618
|
|
|
3619 raw_key = alloca (CRYPT_KEY_SIZE + 1);
|
|
|
3620 memcpy (raw_key, XSTRING_DATA (key), key_size);
|
|
|
3621 memset (raw_key + key_size, 0, (CRYPT_KEY_SIZE + 1) - key_size);
|
|
|
3622
|
|
|
3623 ecb_crypt (raw_key, encrypted_string, rounded_size,
|
|
|
3624 DES_ENCRYPT | DES_SW);
|
|
|
3625 return make_string (encrypted_string, rounded_size);
|
|
|
3626 }
|
|
|
3627
|
|
|
3628 DEFUN ("decrypt-string", Fdecrypt_string, 2, 2, 0, /*
|
|
|
3629 Decrypt STRING using KEY.
|
|
|
3630 */
|
|
|
3631 (string, key))
|
|
|
3632 {
|
|
|
3633 char *decrypted_string, *raw_key;
|
|
|
3634 int string_size, key_size;
|
|
|
3635
|
|
|
3636 CHECK_STRING (string);
|
|
|
3637 CHECK_STRING (key);
|
|
|
3638
|
|
|
3639 string_size = XSTRING_LENGTH (string) + 1;
|
|
|
3640 decrypted_string = alloca (string_size);
|
|
|
3641 memcpy (decrypted_string, XSTRING_DATA (string), string_size);
|
|
|
3642 decrypted_string[string_size - 1] = '\0';
|
|
|
3643
|
|
|
3644 key_size = min (CRYPT_KEY_SIZE, XSTRING_LENGTH (key))
|
|
|
3645
|
|
|
3646 raw_key = alloca (CRYPT_KEY_SIZE + 1);
|
|
|
3647 memcpy (raw_key, XSTRING_DATA (key), key_size);
|
|
|
3648 memset (raw_key + key_size, 0, (CRYPT_KEY_SIZE + 1) - key_size);
|
|
|
3649
|
|
|
3650
|
|
|
3651 ecb_crypt (raw_key, decrypted_string, string_size, D | DES_SW);
|
|
|
3652 return make_string (decrypted_string, string_size - 1);
|
|
|
3653 }
|
|
|
3654 #endif /* 0 */
|
|
|
3655
|
|
|
3656
|
|
|
3657 DEFUN ("verify-visited-file-modtime", Fverify_visited_file_modtime, 1, 1, 0, /*
|
|
444
|
3658 Return t if last mod time of BUFFER's visited file matches what BUFFER records.
|
|
428
|
3659 This means that the file has not been changed since it was visited or saved.
|
|
|
3660 */
|
|
444
|
3661 (buffer))
|
|
428
|
3662 {
|
|
442
|
3663 /* This function can call lisp; GC checked 2000-07-11 ben */
|
|
428
|
3664 struct buffer *b;
|
|
|
3665 struct stat st;
|
|
|
3666 Lisp_Object handler;
|
|
|
3667
|
|
444
|
3668 CHECK_BUFFER (buffer);
|
|
|
3669 b = XBUFFER (buffer);
|
|
428
|
3670
|
|
|
3671 if (!STRINGP (b->filename)) return Qt;
|
|
|
3672 if (b->modtime == 0) return Qt;
|
|
|
3673
|
|
|
3674 /* If the file name has special constructs in it,
|
|
|
3675 call the corresponding file handler. */
|
|
|
3676 handler = Ffind_file_name_handler (b->filename,
|
|
|
3677 Qverify_visited_file_modtime);
|
|
|
3678 if (!NILP (handler))
|
|
444
|
3679 return call2 (handler, Qverify_visited_file_modtime, buffer);
|
|
428
|
3680
|
|
442
|
3681 if (xemacs_stat ((char *) XSTRING_DATA (b->filename), &st) < 0)
|
|
428
|
3682 {
|
|
|
3683 /* If the file doesn't exist now and didn't exist before,
|
|
|
3684 we say that it isn't modified, provided the error is a tame one. */
|
|
|
3685 if (errno == ENOENT || errno == EACCES || errno == ENOTDIR)
|
|
|
3686 st.st_mtime = -1;
|
|
|
3687 else
|
|
|
3688 st.st_mtime = 0;
|
|
|
3689 }
|
|
|
3690 if (st.st_mtime == b->modtime
|
|
|
3691 /* If both are positive, accept them if they are off by one second. */
|
|
|
3692 || (st.st_mtime > 0 && b->modtime > 0
|
|
|
3693 && (st.st_mtime == b->modtime + 1
|
|
|
3694 || st.st_mtime == b->modtime - 1)))
|
|
|
3695 return Qt;
|
|
|
3696 return Qnil;
|
|
|
3697 }
|
|
|
3698
|
|
|
3699 DEFUN ("clear-visited-file-modtime", Fclear_visited_file_modtime, 0, 0, 0, /*
|
|
|
3700 Clear out records of last mod time of visited file.
|
|
|
3701 Next attempt to save will certainly not complain of a discrepancy.
|
|
|
3702 */
|
|
|
3703 ())
|
|
|
3704 {
|
|
|
3705 current_buffer->modtime = 0;
|
|
|
3706 return Qnil;
|
|
|
3707 }
|
|
|
3708
|
|
|
3709 DEFUN ("visited-file-modtime", Fvisited_file_modtime, 0, 0, 0, /*
|
|
|
3710 Return the current buffer's recorded visited file modification time.
|
|
|
3711 The value is a list of the form (HIGH . LOW), like the time values
|
|
|
3712 that `file-attributes' returns.
|
|
|
3713 */
|
|
|
3714 ())
|
|
|
3715 {
|
|
|
3716 return time_to_lisp ((time_t) current_buffer->modtime);
|
|
|
3717 }
|
|
|
3718
|
|
|
3719 DEFUN ("set-visited-file-modtime", Fset_visited_file_modtime, 0, 1, 0, /*
|
|
|
3720 Update buffer's recorded modification time from the visited file's time.
|
|
|
3721 Useful if the buffer was not read from the file normally
|
|
|
3722 or if the file itself has been changed for some known benign reason.
|
|
|
3723 An argument specifies the modification time value to use
|
|
|
3724 \(instead of that of the visited file), in the form of a list
|
|
|
3725 \(HIGH . LOW) or (HIGH LOW).
|
|
|
3726 */
|
|
|
3727 (time_list))
|
|
|
3728 {
|
|
|
3729 /* This function can call lisp */
|
|
|
3730 if (!NILP (time_list))
|
|
|
3731 {
|
|
|
3732 time_t the_time;
|
|
|
3733 lisp_to_time (time_list, &the_time);
|
|
|
3734 current_buffer->modtime = (int) the_time;
|
|
|
3735 }
|
|
|
3736 else
|
|
|
3737 {
|
|
|
3738 Lisp_Object filename;
|
|
|
3739 struct stat st;
|
|
|
3740 Lisp_Object handler;
|
|
|
3741 struct gcpro gcpro1, gcpro2, gcpro3;
|
|
|
3742
|
|
|
3743 GCPRO3 (filename, time_list, current_buffer->filename);
|
|
|
3744 filename = Fexpand_file_name (current_buffer->filename, Qnil);
|
|
|
3745
|
|
|
3746 /* If the file name has special constructs in it,
|
|
|
3747 call the corresponding file handler. */
|
|
|
3748 handler = Ffind_file_name_handler (filename, Qset_visited_file_modtime);
|
|
|
3749 UNGCPRO;
|
|
|
3750 if (!NILP (handler))
|
|
|
3751 /* The handler can find the file name the same way we did. */
|
|
|
3752 return call2 (handler, Qset_visited_file_modtime, Qnil);
|
|
442
|
3753 else if (xemacs_stat ((char *) XSTRING_DATA (filename), &st) >= 0)
|
|
428
|
3754 current_buffer->modtime = st.st_mtime;
|
|
|
3755 }
|
|
|
3756
|
|
|
3757 return Qnil;
|
|
|
3758 }
|
|
|
3759
|
|
|
3760 static Lisp_Object
|
|
|
3761 auto_save_error (Lisp_Object condition_object, Lisp_Object ignored)
|
|
|
3762 {
|
|
|
3763 /* This function can call lisp */
|
|
|
3764 if (gc_in_progress)
|
|
|
3765 return Qnil;
|
|
|
3766 /* Don't try printing an error message after everything is gone! */
|
|
|
3767 if (preparing_for_armageddon)
|
|
|
3768 return Qnil;
|
|
|
3769 clear_echo_area (selected_frame (), Qauto_saving, 1);
|
|
|
3770 Fding (Qt, Qauto_save_error, Qnil);
|
|
|
3771 message ("Auto-saving...error for %s", XSTRING_DATA (current_buffer->name));
|
|
|
3772 Fsleep_for (make_int (1));
|
|
|
3773 message ("Auto-saving...error!for %s", XSTRING_DATA (current_buffer->name));
|
|
|
3774 Fsleep_for (make_int (1));
|
|
|
3775 message ("Auto-saving...error for %s", XSTRING_DATA (current_buffer->name));
|
|
|
3776 Fsleep_for (make_int (1));
|
|
|
3777 return Qnil;
|
|
|
3778 }
|
|
|
3779
|
|
|
3780 static Lisp_Object
|
|
|
3781 auto_save_1 (Lisp_Object ignored)
|
|
|
3782 {
|
|
|
3783 /* This function can call lisp */
|
|
|
3784 /* #### I think caller is protecting current_buffer? */
|
|
|
3785 struct stat st;
|
|
|
3786 Lisp_Object fn = current_buffer->filename;
|
|
|
3787 Lisp_Object a = current_buffer->auto_save_file_name;
|
|
|
3788
|
|
|
3789 if (!STRINGP (a))
|
|
|
3790 return (Qnil);
|
|
|
3791
|
|
|
3792 /* Get visited file's mode to become the auto save file's mode. */
|
|
|
3793 if (STRINGP (fn) &&
|
|
442
|
3794 xemacs_stat ((char *) XSTRING_DATA (fn), &st) >= 0)
|
|
428
|
3795 /* But make sure we can overwrite it later! */
|
|
|
3796 auto_save_mode_bits = st.st_mode | 0600;
|
|
|
3797 else
|
|
|
3798 /* default mode for auto-save files of buffers with no file is
|
|
|
3799 readable by owner only. This may annoy some small number of
|
|
|
3800 people, but the alternative removes all privacy from email. */
|
|
|
3801 auto_save_mode_bits = 0600;
|
|
|
3802
|
|
|
3803 return
|
|
|
3804 /* !!#### need to deal with this 'escape-quoted everywhere */
|
|
|
3805 Fwrite_region_internal (Qnil, Qnil, a, Qnil, Qlambda, Qnil,
|
|
|
3806 #ifdef MULE
|
|
|
3807 Qescape_quoted
|
|
|
3808 #else
|
|
|
3809 Qnil
|
|
|
3810 #endif
|
|
|
3811 );
|
|
|
3812 }
|
|
|
3813
|
|
|
3814 static Lisp_Object
|
|
|
3815 auto_save_expand_name_error (Lisp_Object condition_object, Lisp_Object ignored)
|
|
|
3816 {
|
|
|
3817 /* #### this function should spew an error message about not being
|
|
|
3818 able to open the .saves file. */
|
|
|
3819 return Qnil;
|
|
|
3820 }
|
|
|
3821
|
|
|
3822 static Lisp_Object
|
|
|
3823 auto_save_expand_name (Lisp_Object name)
|
|
|
3824 {
|
|
|
3825 struct gcpro gcpro1;
|
|
|
3826
|
|
|
3827 /* note that caller did NOT gc protect name, so we do it. */
|
|
|
3828 /* #### dmoore - this might not be necessary, if condition_case_1
|
|
|
3829 protects it. but I don't think it does. */
|
|
|
3830 GCPRO1 (name);
|
|
|
3831 RETURN_UNGCPRO (Fexpand_file_name (name, Qnil));
|
|
|
3832 }
|
|
|
3833
|
|
|
3834
|
|
|
3835 static Lisp_Object
|
|
|
3836 do_auto_save_unwind (Lisp_Object fd)
|
|
|
3837 {
|
|
|
3838 close (XINT (fd));
|
|
|
3839 return (fd);
|
|
|
3840 }
|
|
|
3841
|
|
|
3842 static Lisp_Object
|
|
|
3843 do_auto_save_unwind_2 (Lisp_Object old_auto_saving)
|
|
|
3844 {
|
|
|
3845 auto_saving = XINT (old_auto_saving);
|
|
|
3846 return Qnil;
|
|
|
3847 }
|
|
|
3848
|
|
|
3849 /* Fdo_auto_save() checks whether a GC is in progress when it is called,
|
|
|
3850 and if so, tries to avoid touching lisp objects.
|
|
|
3851
|
|
|
3852 The only time that Fdo_auto_save() is called while GC is in progress
|
|
|
3853 is if we're going down, as a result of an abort() or a kill signal.
|
|
|
3854 It's fairly important that we generate autosave files in that case!
|
|
|
3855 */
|
|
|
3856
|
|
|
3857 DEFUN ("do-auto-save", Fdo_auto_save, 0, 2, "", /*
|
|
|
3858 Auto-save all buffers that need it.
|
|
|
3859 This is all buffers that have auto-saving enabled
|
|
|
3860 and are changed since last auto-saved.
|
|
|
3861 Auto-saving writes the buffer into a file
|
|
|
3862 so that your editing is not lost if the system crashes.
|
|
|
3863 This file is not the file you visited; that changes only when you save.
|
|
|
3864 Normally we run the normal hook `auto-save-hook' before saving.
|
|
|
3865
|
|
|
3866 Non-nil first argument means do not print any message if successful.
|
|
|
3867 Non-nil second argument means save only current buffer.
|
|
|
3868 */
|
|
|
3869 (no_message, current_only))
|
|
|
3870 {
|
|
|
3871 /* This function can call lisp */
|
|
|
3872 struct buffer *b;
|
|
|
3873 Lisp_Object tail, buf;
|
|
|
3874 int auto_saved = 0;
|
|
|
3875 int do_handled_files;
|
|
|
3876 Lisp_Object oquit = Qnil;
|
|
|
3877 Lisp_Object listfile = Qnil;
|
|
|
3878 Lisp_Object old;
|
|
|
3879 int listdesc = -1;
|
|
|
3880 int speccount = specpdl_depth ();
|
|
|
3881 struct gcpro gcpro1, gcpro2, gcpro3;
|
|
|
3882
|
|
|
3883 XSETBUFFER (old, current_buffer);
|
|
|
3884 GCPRO3 (oquit, listfile, old);
|
|
|
3885 check_quit (); /* make Vquit_flag accurate */
|
|
|
3886 /* Ordinarily don't quit within this function,
|
|
|
3887 but don't make it impossible to quit (in case we get hung in I/O). */
|
|
|
3888 oquit = Vquit_flag;
|
|
|
3889 Vquit_flag = Qnil;
|
|
|
3890
|
|
|
3891 /* No further GCPRO needed, because (when it matters) all Lisp_Object
|
|
|
3892 variables point to non-strings reached from Vbuffer_alist. */
|
|
|
3893
|
|
|
3894 if (minibuf_level != 0 || preparing_for_armageddon)
|
|
|
3895 no_message = Qt;
|
|
|
3896
|
|
|
3897 run_hook (Qauto_save_hook);
|
|
|
3898
|
|
|
3899 if (STRINGP (Vauto_save_list_file_name))
|
|
|
3900 listfile = condition_case_1 (Qt,
|
|
|
3901 auto_save_expand_name,
|
|
|
3902 Vauto_save_list_file_name,
|
|
|
3903 auto_save_expand_name_error, Qnil);
|
|
|
3904
|
|
|
3905 /* Make sure auto_saving is reset. */
|
|
|
3906 record_unwind_protect (do_auto_save_unwind_2, make_int (auto_saving));
|
|
|
3907
|
|
|
3908 auto_saving = 1;
|
|
|
3909
|
|
|
3910 /* First, save all files which don't have handlers. If Emacs is
|
|
|
3911 crashing, the handlers may tweak what is causing Emacs to crash
|
|
|
3912 in the first place, and it would be a shame if Emacs failed to
|
|
|
3913 autosave perfectly ordinary files because it couldn't handle some
|
|
|
3914 ange-ftp'd file. */
|
|
|
3915 for (do_handled_files = 0; do_handled_files < 2; do_handled_files++)
|
|
|
3916 {
|
|
|
3917 for (tail = Vbuffer_alist;
|
|
|
3918 CONSP (tail);
|
|
|
3919 tail = XCDR (tail))
|
|
|
3920 {
|
|
|
3921 buf = XCDR (XCAR (tail));
|
|
|
3922 b = XBUFFER (buf);
|
|
|
3923
|
|
|
3924 if (!NILP (current_only)
|
|
|
3925 && b != current_buffer)
|
|
|
3926 continue;
|
|
|
3927
|
|
|
3928 /* Don't auto-save indirect buffers.
|
|
|
3929 The base buffer takes care of it. */
|
|
|
3930 if (b->base_buffer)
|
|
|
3931 continue;
|
|
|
3932
|
|
|
3933 /* Check for auto save enabled
|
|
|
3934 and file changed since last auto save
|
|
|
3935 and file changed since last real save. */
|
|
|
3936 if (STRINGP (b->auto_save_file_name)
|
|
|
3937 && BUF_SAVE_MODIFF (b) < BUF_MODIFF (b)
|
|
|
3938 && b->auto_save_modified < BUF_MODIFF (b)
|
|
|
3939 /* -1 means we've turned off autosaving for a while--see below. */
|
|
|
3940 && XINT (b->saved_size) >= 0
|
|
|
3941 && (do_handled_files
|
|
|
3942 || NILP (Ffind_file_name_handler (b->auto_save_file_name,
|
|
|
3943 Qwrite_region))))
|
|
|
3944 {
|
|
|
3945 EMACS_TIME before_time, after_time;
|
|
|
3946
|
|
|
3947 EMACS_GET_TIME (before_time);
|
|
|
3948 /* If we had a failure, don't try again for 20 minutes. */
|
|
|
3949 if (!preparing_for_armageddon
|
|
|
3950 && b->auto_save_failure_time >= 0
|
|
|
3951 && (EMACS_SECS (before_time) - b->auto_save_failure_time <
|
|
|
3952 1200))
|
|
|
3953 continue;
|
|
|
3954
|
|
|
3955 if (!preparing_for_armageddon &&
|
|
|
3956 (XINT (b->saved_size) * 10
|
|
|
3957 > (BUF_Z (b) - BUF_BEG (b)) * 13)
|
|
|
3958 /* A short file is likely to change a large fraction;
|
|
|
3959 spare the user annoying messages. */
|
|
|
3960 && XINT (b->saved_size) > 5000
|
|
|
3961 /* These messages are frequent and annoying for `*mail*'. */
|
|
|
3962 && !NILP (b->filename)
|
|
|
3963 && NILP (no_message)
|
|
|
3964 && disable_auto_save_when_buffer_shrinks)
|
|
|
3965 {
|
|
|
3966 /* It has shrunk too much; turn off auto-saving here.
|
|
|
3967 Unless we're about to crash, in which case auto-save it
|
|
|
3968 anyway.
|
|
|
3969 */
|
|
|
3970 message
|
|
|
3971 ("Buffer %s has shrunk a lot; auto save turned off there",
|
|
|
3972 XSTRING_DATA (b->name));
|
|
|
3973 /* Turn off auto-saving until there's a real save,
|
|
|
3974 and prevent any more warnings. */
|
|
|
3975 b->saved_size = make_int (-1);
|
|
|
3976 if (!gc_in_progress)
|
|
|
3977 Fsleep_for (make_int (1));
|
|
|
3978 continue;
|
|
|
3979 }
|
|
|
3980 set_buffer_internal (b);
|
|
|
3981 if (!auto_saved && NILP (no_message))
|
|
|
3982 {
|
|
442
|
3983 static const unsigned char *msg
|
|
|
3984 = (const unsigned char *) "Auto-saving...";
|
|
428
|
3985 echo_area_message (selected_frame (), msg, Qnil,
|
|
442
|
3986 0, strlen ((const char *) msg),
|
|
428
|
3987 Qauto_saving);
|
|
|
3988 }
|
|
|
3989
|
|
|
3990 /* Open the auto-save list file, if necessary.
|
|
|
3991 We only do this now so that the file only exists
|
|
|
3992 if we actually auto-saved any files. */
|
|
444
|
3993 if (!auto_saved && !inhibit_auto_save_session
|
|
|
3994 && !NILP (Vauto_save_list_file_prefix)
|
|
|
3995 && STRINGP (listfile) && listdesc < 0)
|
|
428
|
3996 {
|
|
|
3997 listdesc = open ((char *) XSTRING_DATA (listfile),
|
|
|
3998 O_WRONLY | O_TRUNC | O_CREAT | OPEN_BINARY,
|
|
|
3999 CREAT_MODE);
|
|
|
4000
|
|
|
4001 /* Arrange to close that file whether or not we get
|
|
|
4002 an error. */
|
|
|
4003 if (listdesc >= 0)
|
|
|
4004 record_unwind_protect (do_auto_save_unwind,
|
|
|
4005 make_int (listdesc));
|
|
|
4006 }
|
|
|
4007
|
|
|
4008 /* Record all the buffers that we are auto-saving in
|
|
|
4009 the special file that lists them. For each of
|
|
|
4010 these buffers, record visited name (if any) and
|
|
|
4011 auto save name. */
|
|
|
4012 if (listdesc >= 0)
|
|
|
4013 {
|
|
442
|
4014 const Extbyte *auto_save_file_name_ext;
|
|
428
|
4015 Extcount auto_save_file_name_ext_len;
|
|
|
4016
|
|
440
|
4017 TO_EXTERNAL_FORMAT (LISP_STRING, b->auto_save_file_name,
|
|
|
4018 ALLOCA, (auto_save_file_name_ext,
|
|
|
4019 auto_save_file_name_ext_len),
|
|
|
4020 Qfile_name);
|
|
428
|
4021 if (!NILP (b->filename))
|
|
|
4022 {
|
|
442
|
4023 const Extbyte *filename_ext;
|
|
428
|
4024 Extcount filename_ext_len;
|
|
|
4025
|
|
440
|
4026 TO_EXTERNAL_FORMAT (LISP_STRING, b->filename,
|
|
|
4027 ALLOCA, (filename_ext,
|
|
|
4028 filename_ext_len),
|
|
|
4029 Qfile_name);
|
|
428
|
4030 write (listdesc, filename_ext, filename_ext_len);
|
|
|
4031 }
|
|
|
4032 write (listdesc, "\n", 1);
|
|
|
4033 write (listdesc, auto_save_file_name_ext,
|
|
|
4034 auto_save_file_name_ext_len);
|
|
|
4035 write (listdesc, "\n", 1);
|
|
|
4036 }
|
|
|
4037
|
|
|
4038 /* dmoore - In a bad scenario we've set b=XBUFFER(buf)
|
|
|
4039 based on values in Vbuffer_alist. auto_save_1 may
|
|
|
4040 cause lisp handlers to run. Those handlers may kill
|
|
|
4041 the buffer and then GC. Since the buffer is killed,
|
|
|
4042 it's no longer in Vbuffer_alist so it might get reaped
|
|
|
4043 by the GC. We also need to protect tail. */
|
|
|
4044 /* #### There is probably a lot of other code which has
|
|
|
4045 pointers into buffers which may get blown away by
|
|
|
4046 handlers. */
|
|
|
4047 {
|
|
|
4048 struct gcpro ngcpro1, ngcpro2;
|
|
|
4049 NGCPRO2 (buf, tail);
|
|
|
4050 condition_case_1 (Qt,
|
|
|
4051 auto_save_1, Qnil,
|
|
|
4052 auto_save_error, Qnil);
|
|
|
4053 NUNGCPRO;
|
|
|
4054 }
|
|
|
4055 /* Handler killed our saved current-buffer! Pick any. */
|
|
|
4056 if (!BUFFER_LIVE_P (XBUFFER (old)))
|
|
|
4057 XSETBUFFER (old, current_buffer);
|
|
|
4058
|
|
|
4059 set_buffer_internal (XBUFFER (old));
|
|
|
4060 auto_saved++;
|
|
|
4061
|
|
|
4062 /* Handler killed their own buffer! */
|
|
|
4063 if (!BUFFER_LIVE_P(b))
|
|
|
4064 continue;
|
|
|
4065
|
|
|
4066 b->auto_save_modified = BUF_MODIFF (b);
|
|
|
4067 b->saved_size = make_int (BUF_SIZE (b));
|
|
|
4068 EMACS_GET_TIME (after_time);
|
|
|
4069 /* If auto-save took more than 60 seconds,
|
|
|
4070 assume it was an NFS failure that got a timeout. */
|
|
|
4071 if (EMACS_SECS (after_time) - EMACS_SECS (before_time) > 60)
|
|
|
4072 b->auto_save_failure_time = EMACS_SECS (after_time);
|
|
|
4073 }
|
|
|
4074 }
|
|
|
4075 }
|
|
|
4076
|
|
|
4077 /* Prevent another auto save till enough input events come in. */
|
|
|
4078 if (auto_saved)
|
|
|
4079 record_auto_save ();
|
|
|
4080
|
|
|
4081 /* If we didn't save anything into the listfile, remove the old
|
|
|
4082 one because nothing needed to be auto-saved. Do this afterwards
|
|
|
4083 rather than before in case we get a crash attempting to autosave
|
|
|
4084 (in that case we'd still want the old one around). */
|
|
|
4085 if (listdesc < 0 && !auto_saved && STRINGP (listfile))
|
|
|
4086 unlink ((char *) XSTRING_DATA (listfile));
|
|
|
4087
|
|
|
4088 /* Show "...done" only if the echo area would otherwise be empty. */
|
|
|
4089 if (auto_saved && NILP (no_message)
|
|
|
4090 && NILP (clear_echo_area (selected_frame (), Qauto_saving, 0)))
|
|
|
4091 {
|
|
442
|
4092 static const unsigned char *msg
|
|
|
4093 = (const unsigned char *)"Auto-saving...done";
|
|
428
|
4094 echo_area_message (selected_frame (), msg, Qnil, 0,
|
|
442
|
4095 strlen ((const char *) msg), Qauto_saving);
|
|
428
|
4096 }
|
|
|
4097
|
|
|
4098 Vquit_flag = oquit;
|
|
|
4099
|
|
|
4100 RETURN_UNGCPRO (unbind_to (speccount, Qnil));
|
|
|
4101 }
|
|
|
4102
|
|
|
4103 DEFUN ("set-buffer-auto-saved", Fset_buffer_auto_saved, 0, 0, 0, /*
|
|
|
4104 Mark current buffer as auto-saved with its current text.
|
|
|
4105 No auto-save file will be written until the buffer changes again.
|
|
|
4106 */
|
|
|
4107 ())
|
|
|
4108 {
|
|
|
4109 current_buffer->auto_save_modified = BUF_MODIFF (current_buffer);
|
|
|
4110 current_buffer->saved_size = make_int (BUF_SIZE (current_buffer));
|
|
|
4111 current_buffer->auto_save_failure_time = -1;
|
|
|
4112 return Qnil;
|
|
|
4113 }
|
|
|
4114
|
|
|
4115 DEFUN ("clear-buffer-auto-save-failure", Fclear_buffer_auto_save_failure, 0, 0, 0, /*
|
|
|
4116 Clear any record of a recent auto-save failure in the current buffer.
|
|
|
4117 */
|
|
|
4118 ())
|
|
|
4119 {
|
|
|
4120 current_buffer->auto_save_failure_time = -1;
|
|
|
4121 return Qnil;
|
|
|
4122 }
|
|
|
4123
|
|
|
4124 DEFUN ("recent-auto-save-p", Frecent_auto_save_p, 0, 0, 0, /*
|
|
|
4125 Return t if buffer has been auto-saved since last read in or saved.
|
|
|
4126 */
|
|
|
4127 ())
|
|
|
4128 {
|
|
|
4129 return (BUF_SAVE_MODIFF (current_buffer) <
|
|
|
4130 current_buffer->auto_save_modified) ? Qt : Qnil;
|
|
|
4131 }
|
|
|
4132
|
|
|
4133
|
|
|
4134 /************************************************************************/
|
|
|
4135 /* initialization */
|
|
|
4136 /************************************************************************/
|
|
|
4137
|
|
|
4138 void
|
|
|
4139 syms_of_fileio (void)
|
|
|
4140 {
|
|
|
4141 defsymbol (&Qexpand_file_name, "expand-file-name");
|
|
|
4142 defsymbol (&Qfile_truename, "file-truename");
|
|
|
4143 defsymbol (&Qsubstitute_in_file_name, "substitute-in-file-name");
|
|
|
4144 defsymbol (&Qdirectory_file_name, "directory-file-name");
|
|
|
4145 defsymbol (&Qfile_name_directory, "file-name-directory");
|
|
|
4146 defsymbol (&Qfile_name_nondirectory, "file-name-nondirectory");
|
|
|
4147 defsymbol (&Qunhandled_file_name_directory, "unhandled-file-name-directory");
|
|
|
4148 defsymbol (&Qfile_name_as_directory, "file-name-as-directory");
|
|
|
4149 defsymbol (&Qcopy_file, "copy-file");
|
|
|
4150 defsymbol (&Qmake_directory_internal, "make-directory-internal");
|
|
|
4151 defsymbol (&Qdelete_directory, "delete-directory");
|
|
|
4152 defsymbol (&Qdelete_file, "delete-file");
|
|
|
4153 defsymbol (&Qrename_file, "rename-file");
|
|
|
4154 defsymbol (&Qadd_name_to_file, "add-name-to-file");
|
|
|
4155 defsymbol (&Qmake_symbolic_link, "make-symbolic-link");
|
|
|
4156 defsymbol (&Qfile_exists_p, "file-exists-p");
|
|
|
4157 defsymbol (&Qfile_executable_p, "file-executable-p");
|
|
|
4158 defsymbol (&Qfile_readable_p, "file-readable-p");
|
|
|
4159 defsymbol (&Qfile_symlink_p, "file-symlink-p");
|
|
|
4160 defsymbol (&Qfile_writable_p, "file-writable-p");
|
|
|
4161 defsymbol (&Qfile_directory_p, "file-directory-p");
|
|
|
4162 defsymbol (&Qfile_regular_p, "file-regular-p");
|
|
|
4163 defsymbol (&Qfile_accessible_directory_p, "file-accessible-directory-p");
|
|
|
4164 defsymbol (&Qfile_modes, "file-modes");
|
|
|
4165 defsymbol (&Qset_file_modes, "set-file-modes");
|
|
|
4166 defsymbol (&Qfile_newer_than_file_p, "file-newer-than-file-p");
|
|
|
4167 defsymbol (&Qinsert_file_contents, "insert-file-contents");
|
|
|
4168 defsymbol (&Qwrite_region, "write-region");
|
|
|
4169 defsymbol (&Qverify_visited_file_modtime, "verify-visited-file-modtime");
|
|
|
4170 defsymbol (&Qset_visited_file_modtime, "set-visited-file-modtime");
|
|
|
4171 defsymbol (&Qcar_less_than_car, "car-less-than-car"); /* Vomitous! */
|
|
|
4172
|
|
|
4173 defsymbol (&Qauto_save_hook, "auto-save-hook");
|
|
|
4174 defsymbol (&Qauto_save_error, "auto-save-error");
|
|
|
4175 defsymbol (&Qauto_saving, "auto-saving");
|
|
|
4176
|
|
|
4177 defsymbol (&Qformat_decode, "format-decode");
|
|
|
4178 defsymbol (&Qformat_annotate_function, "format-annotate-function");
|
|
|
4179
|
|
|
4180 defsymbol (&Qcompute_buffer_file_truename, "compute-buffer-file-truename");
|
|
442
|
4181 DEFERROR_STANDARD (Qfile_error, Qio_error);
|
|
|
4182 DEFERROR_STANDARD (Qfile_already_exists, Qfile_error);
|
|
428
|
4183
|
|
|
4184 DEFSUBR (Ffind_file_name_handler);
|
|
|
4185
|
|
|
4186 DEFSUBR (Ffile_name_directory);
|
|
|
4187 DEFSUBR (Ffile_name_nondirectory);
|
|
|
4188 DEFSUBR (Funhandled_file_name_directory);
|
|
|
4189 DEFSUBR (Ffile_name_as_directory);
|
|
|
4190 DEFSUBR (Fdirectory_file_name);
|
|
|
4191 DEFSUBR (Fmake_temp_name);
|
|
|
4192 DEFSUBR (Fexpand_file_name);
|
|
|
4193 DEFSUBR (Ffile_truename);
|
|
|
4194 DEFSUBR (Fsubstitute_in_file_name);
|
|
|
4195 DEFSUBR (Fcopy_file);
|
|
|
4196 DEFSUBR (Fmake_directory_internal);
|
|
|
4197 DEFSUBR (Fdelete_directory);
|
|
|
4198 DEFSUBR (Fdelete_file);
|
|
|
4199 DEFSUBR (Frename_file);
|
|
|
4200 DEFSUBR (Fadd_name_to_file);
|
|
|
4201 DEFSUBR (Fmake_symbolic_link);
|
|
|
4202 #ifdef HPUX_NET
|
|
|
4203 DEFSUBR (Fsysnetunam);
|
|
|
4204 #endif /* HPUX_NET */
|
|
|
4205 DEFSUBR (Ffile_name_absolute_p);
|
|
|
4206 DEFSUBR (Ffile_exists_p);
|
|
|
4207 DEFSUBR (Ffile_executable_p);
|
|
|
4208 DEFSUBR (Ffile_readable_p);
|
|
|
4209 DEFSUBR (Ffile_writable_p);
|
|
|
4210 DEFSUBR (Ffile_symlink_p);
|
|
|
4211 DEFSUBR (Ffile_directory_p);
|
|
|
4212 DEFSUBR (Ffile_accessible_directory_p);
|
|
|
4213 DEFSUBR (Ffile_regular_p);
|
|
|
4214 DEFSUBR (Ffile_modes);
|
|
|
4215 DEFSUBR (Fset_file_modes);
|
|
|
4216 DEFSUBR (Fset_default_file_modes);
|
|
|
4217 DEFSUBR (Fdefault_file_modes);
|
|
|
4218 DEFSUBR (Funix_sync);
|
|
|
4219 DEFSUBR (Ffile_newer_than_file_p);
|
|
|
4220 DEFSUBR (Finsert_file_contents_internal);
|
|
|
4221 DEFSUBR (Fwrite_region_internal);
|
|
|
4222 DEFSUBR (Fcar_less_than_car); /* Vomitous! */
|
|
|
4223 DEFSUBR (Fcdr_less_than_cdr); /* Yeah oh yeah bucko .... */
|
|
|
4224 #if 0
|
|
|
4225 DEFSUBR (Fencrypt_string);
|
|
|
4226 DEFSUBR (Fdecrypt_string);
|
|
|
4227 #endif
|
|
|
4228 DEFSUBR (Fverify_visited_file_modtime);
|
|
|
4229 DEFSUBR (Fclear_visited_file_modtime);
|
|
|
4230 DEFSUBR (Fvisited_file_modtime);
|
|
|
4231 DEFSUBR (Fset_visited_file_modtime);
|
|
|
4232
|
|
|
4233 DEFSUBR (Fdo_auto_save);
|
|
|
4234 DEFSUBR (Fset_buffer_auto_saved);
|
|
|
4235 DEFSUBR (Fclear_buffer_auto_save_failure);
|
|
|
4236 DEFSUBR (Frecent_auto_save_p);
|
|
|
4237 }
|
|
|
4238
|
|
|
4239 void
|
|
|
4240 vars_of_fileio (void)
|
|
|
4241 {
|
|
|
4242 DEFVAR_LISP ("auto-save-file-format", &Vauto_save_file_format /*
|
|
|
4243 *Format in which to write auto-save files.
|
|
|
4244 Should be a list of symbols naming formats that are defined in `format-alist'.
|
|
|
4245 If it is t, which is the default, auto-save files are written in the
|
|
|
4246 same format as a regular save would use.
|
|
|
4247 */ );
|
|
|
4248 Vauto_save_file_format = Qt;
|
|
|
4249
|
|
|
4250 DEFVAR_LISP ("file-name-handler-alist", &Vfile_name_handler_alist /*
|
|
|
4251 *Alist of elements (REGEXP . HANDLER) for file names handled specially.
|
|
|
4252 If a file name matches REGEXP, then all I/O on that file is done by calling
|
|
|
4253 HANDLER.
|
|
|
4254
|
|
|
4255 The first argument given to HANDLER is the name of the I/O primitive
|
|
|
4256 to be handled; the remaining arguments are the arguments that were
|
|
|
4257 passed to that primitive. For example, if you do
|
|
|
4258 (file-exists-p FILENAME)
|
|
|
4259 and FILENAME is handled by HANDLER, then HANDLER is called like this:
|
|
|
4260 (funcall HANDLER 'file-exists-p FILENAME)
|
|
|
4261 The function `find-file-name-handler' checks this list for a handler
|
|
|
4262 for its argument.
|
|
|
4263 */ );
|
|
|
4264 Vfile_name_handler_alist = Qnil;
|
|
|
4265
|
|
|
4266 DEFVAR_LISP ("after-insert-file-functions", &Vafter_insert_file_functions /*
|
|
|
4267 A list of functions to be called at the end of `insert-file-contents'.
|
|
|
4268 Each is passed one argument, the number of bytes inserted. It should return
|
|
|
4269 the new byte count, and leave point the same. If `insert-file-contents' is
|
|
|
4270 intercepted by a handler from `file-name-handler-alist', that handler is
|
|
|
4271 responsible for calling the after-insert-file-functions if appropriate.
|
|
|
4272 */ );
|
|
|
4273 Vafter_insert_file_functions = Qnil;
|
|
|
4274
|
|
|
4275 DEFVAR_LISP ("write-region-annotate-functions",
|
|
|
4276 &Vwrite_region_annotate_functions /*
|
|
|
4277 A list of functions to be called at the start of `write-region'.
|
|
|
4278 Each is passed two arguments, START and END, as for `write-region'.
|
|
|
4279 It should return a list of pairs (POSITION . STRING) of strings to be
|
|
|
4280 effectively inserted at the specified positions of the file being written
|
|
|
4281 \(1 means to insert before the first byte written). The POSITIONs must be
|
|
|
4282 sorted into increasing order. If there are several functions in the list,
|
|
|
4283 the several lists are merged destructively.
|
|
|
4284 */ );
|
|
|
4285 Vwrite_region_annotate_functions = Qnil;
|
|
|
4286
|
|
|
4287 DEFVAR_LISP ("write-region-annotations-so-far",
|
|
|
4288 &Vwrite_region_annotations_so_far /*
|
|
|
4289 When an annotation function is called, this holds the previous annotations.
|
|
|
4290 These are the annotations made by other annotation functions
|
|
|
4291 that were already called. See also `write-region-annotate-functions'.
|
|
|
4292 */ );
|
|
|
4293 Vwrite_region_annotations_so_far = Qnil;
|
|
|
4294
|
|
|
4295 DEFVAR_LISP ("inhibit-file-name-handlers", &Vinhibit_file_name_handlers /*
|
|
|
4296 A list of file name handlers that temporarily should not be used.
|
|
|
4297 This applies only to the operation `inhibit-file-name-operation'.
|
|
|
4298 */ );
|
|
|
4299 Vinhibit_file_name_handlers = Qnil;
|
|
|
4300
|
|
|
4301 DEFVAR_LISP ("inhibit-file-name-operation", &Vinhibit_file_name_operation /*
|
|
|
4302 The operation for which `inhibit-file-name-handlers' is applicable.
|
|
|
4303 */ );
|
|
|
4304 Vinhibit_file_name_operation = Qnil;
|
|
|
4305
|
|
|
4306 DEFVAR_LISP ("auto-save-list-file-name", &Vauto_save_list_file_name /*
|
|
|
4307 File name in which we write a list of all auto save file names.
|
|
|
4308 */ );
|
|
|
4309 Vauto_save_list_file_name = Qnil;
|
|
|
4310
|
|
444
|
4311 DEFVAR_LISP ("auto-save-list-file-prefix", &Vauto_save_list_file_prefix /*
|
|
|
4312 Prefix for generating auto-save-list-file-name.
|
|
|
4313 Emacs's pid and the system name will be appended to
|
|
|
4314 this prefix to create a unique file name.
|
|
|
4315 */ );
|
|
|
4316 Vauto_save_list_file_prefix = build_string ("~/.saves-");
|
|
|
4317
|
|
|
4318 DEFVAR_BOOL ("inhibit-auto-save-session", &inhibit_auto_save_session /*
|
|
|
4319 When non-nil, inhibit auto save list file creation.
|
|
|
4320 */ );
|
|
|
4321 inhibit_auto_save_session = 0;
|
|
|
4322
|
|
428
|
4323 DEFVAR_BOOL ("disable-auto-save-when-buffer-shrinks",
|
|
|
4324 &disable_auto_save_when_buffer_shrinks /*
|
|
|
4325 If non-nil, auto-saving is disabled when a buffer shrinks too much.
|
|
|
4326 This is to prevent you from losing your edits if you accidentally
|
|
|
4327 delete a large chunk of the buffer and don't notice it until too late.
|
|
|
4328 Saving the buffer normally turns auto-save back on.
|
|
|
4329 */ );
|
|
|
4330 disable_auto_save_when_buffer_shrinks = 1;
|
|
|
4331
|
|
|
4332 DEFVAR_LISP ("directory-sep-char", &Vdirectory_sep_char /*
|
|
|
4333 Directory separator character for built-in functions that return file names.
|
|
|
4334 The value should be either ?/ or ?\\ (any other value is treated as ?\\).
|
|
|
4335 This variable affects the built-in functions only on Windows,
|
|
|
4336 on other platforms, it is initialized so that Lisp code can find out
|
|
|
4337 what the normal separator is.
|
|
|
4338 */ );
|
|
442
|
4339 #ifdef WIN32_NATIVE
|
|
432
|
4340 Vdirectory_sep_char = make_char ('\\');
|
|
|
4341 #else
|
|
442
|
4342 Vdirectory_sep_char = make_char ('/');
|
|
432
|
4343 #endif
|
|
442
|
4344
|
|
|
4345 reinit_vars_of_fileio ();
|
|
428
|
4346 }
|
|
442
|
4347
|
|
|
4348 void
|
|
|
4349 reinit_vars_of_fileio (void)
|
|
|
4350 {
|
|
|
4351 /* We want temp_name_rand to be initialized to a value likely to be
|
|
|
4352 unique to the process, not to the executable. The danger is that
|
|
|
4353 two different XEmacs processes using the same binary on different
|
|
|
4354 machines creating temp files in the same directory will be
|
|
|
4355 unlucky enough to have the same pid. If we randomize using
|
|
|
4356 process startup time, then in practice they will be unlikely to
|
|
|
4357 collide. We use the microseconds field so that scripts that start
|
|
|
4358 simultaneous XEmacs processes on multiple machines will have less
|
|
|
4359 chance of collision. */
|
|
|
4360 {
|
|
|
4361 EMACS_TIME thyme;
|
|
|
4362
|
|
|
4363 EMACS_GET_TIME (thyme);
|
|
|
4364 temp_name_rand = (unsigned int) (EMACS_SECS (thyme) ^ EMACS_USECS (thyme));
|
|
|
4365 }
|
|
|
4366 }
|
