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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 {
|
|
446
|
751 /* This function can GC. GC-checked 2000-11-18 */
|
|
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;
|
|
446
|
764 Lisp_Object handler = Qnil;
|
|
442
|
765 #ifdef CYGWIN
|
|
428
|
766 char *user;
|
|
|
767 #endif
|
|
446
|
768 struct gcpro gcpro1, gcpro2, gcpro3;
|
|
442
|
769
|
|
|
770 /* both of these get set below */
|
|
446
|
771 GCPRO3 (name, default_directory, handler);
|
|
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))
|
|
446
|
779 RETURN_UNGCPRO (call3_check_string (handler, Qexpand_file_name,
|
|
|
780 name, default_directory));
|
|
428
|
781
|
|
|
782 /* Use the buffer's default-directory if DEFAULT_DIRECTORY is omitted. */
|
|
|
783 if (NILP (default_directory))
|
|
|
784 default_directory = current_buffer->directory;
|
|
|
785 if (! STRINGP (default_directory))
|
|
|
786 default_directory = build_string ("/");
|
|
|
787
|
|
|
788 if (!NILP (default_directory))
|
|
|
789 {
|
|
|
790 handler = Ffind_file_name_handler (default_directory, Qexpand_file_name);
|
|
|
791 if (!NILP (handler))
|
|
446
|
792 RETURN_UNGCPRO (call3 (handler, Qexpand_file_name,
|
|
|
793 name, default_directory));
|
|
428
|
794 }
|
|
|
795
|
|
|
796 o = XSTRING_DATA (default_directory);
|
|
|
797
|
|
|
798 /* Make sure DEFAULT_DIRECTORY is properly expanded.
|
|
|
799 It would be better to do this down below where we actually use
|
|
|
800 default_directory. Unfortunately, calling Fexpand_file_name recursively
|
|
|
801 could invoke GC, and the strings might be relocated. This would
|
|
|
802 be annoying because we have pointers into strings lying around
|
|
|
803 that would need adjusting, and people would add new pointers to
|
|
|
804 the code and forget to adjust them, resulting in intermittent bugs.
|
|
|
805 Putting this call here avoids all that crud.
|
|
|
806
|
|
|
807 The EQ test avoids infinite recursion. */
|
|
|
808 if (! NILP (default_directory) && !EQ (default_directory, name)
|
|
|
809 /* Save time in some common cases - as long as default_directory
|
|
|
810 is not relative, it can be canonicalized with name below (if it
|
|
|
811 is needed at all) without requiring it to be expanded now. */
|
|
442
|
812 #ifdef WIN32_NATIVE
|
|
|
813 /* Detect Windows file names with drive specifiers. */
|
|
428
|
814 && ! (IS_DRIVE (o[0]) && (IS_DEVICE_SEP (o[1]) && IS_DIRECTORY_SEP (o[2])))
|
|
|
815 /* Detect Windows file names in UNC format. */
|
|
|
816 && ! (IS_DIRECTORY_SEP (o[0]) && IS_DIRECTORY_SEP (o[1]))
|
|
|
817
|
|
442
|
818 #else /* not WIN32_NATIVE */
|
|
428
|
819
|
|
|
820 /* Detect Unix absolute file names (/... alone is not absolute on
|
|
442
|
821 Windows). */
|
|
428
|
822 && ! (IS_DIRECTORY_SEP (o[0]))
|
|
442
|
823 #endif /* not WIN32_NATIVE */
|
|
428
|
824 )
|
|
442
|
825
|
|
|
826 default_directory = Fexpand_file_name (default_directory, Qnil);
|
|
428
|
827
|
|
|
828 #ifdef FILE_SYSTEM_CASE
|
|
|
829 name = FILE_SYSTEM_CASE (name);
|
|
|
830 #endif
|
|
|
831
|
|
|
832 /* #### dmoore - this is ugly, clean this up. Looks like nm pointing
|
|
|
833 into name should be safe during all of this, though. */
|
|
|
834 nm = XSTRING_DATA (name);
|
|
|
835
|
|
442
|
836 #ifdef WIN32_NATIVE
|
|
428
|
837 /* We will force directory separators to be either all \ or /, so make
|
|
|
838 a local copy to modify, even if there ends up being no change. */
|
|
442
|
839 nm = strcpy ((char *)alloca (strlen ((char *)nm) + 1), (char *)nm);
|
|
428
|
840
|
|
|
841 /* Find and remove drive specifier if present; this makes nm absolute
|
|
|
842 even if the rest of the name appears to be relative. */
|
|
|
843 {
|
|
442
|
844 Bufbyte *colon = (Bufbyte *) strrchr ((char *)nm, ':');
|
|
428
|
845
|
|
|
846 if (colon)
|
|
|
847 /* Only recognize colon as part of drive specifier if there is a
|
|
|
848 single alphabetic character preceding the colon (and if the
|
|
|
849 character before the drive letter, if present, is a directory
|
|
|
850 separator); this is to support the remote system syntax used by
|
|
|
851 ange-ftp, and the "po:username" syntax for POP mailboxes. */
|
|
|
852 look_again:
|
|
|
853 if (nm == colon)
|
|
|
854 nm++;
|
|
|
855 else if (IS_DRIVE (colon[-1])
|
|
|
856 && (colon == nm + 1 || IS_DIRECTORY_SEP (colon[-2])))
|
|
|
857 {
|
|
|
858 drive = colon[-1];
|
|
|
859 nm = colon + 1;
|
|
|
860 }
|
|
|
861 else
|
|
|
862 {
|
|
|
863 while (--colon >= nm)
|
|
|
864 if (colon[0] == ':')
|
|
|
865 goto look_again;
|
|
|
866 }
|
|
|
867 }
|
|
|
868
|
|
|
869 /* If we see "c://somedir", we want to strip the first slash after the
|
|
|
870 colon when stripping the drive letter. Otherwise, this expands to
|
|
|
871 "//somedir". */
|
|
|
872 if (drive && IS_DIRECTORY_SEP (nm[0]) && IS_DIRECTORY_SEP (nm[1]))
|
|
|
873 nm++;
|
|
442
|
874 #endif /* WIN32_NATIVE */
|
|
428
|
875
|
|
|
876 /* If nm is absolute, look for /./ or /../ sequences; if none are
|
|
|
877 found, we can probably return right away. We will avoid allocating
|
|
|
878 a new string if name is already fully expanded. */
|
|
|
879 if (
|
|
|
880 IS_DIRECTORY_SEP (nm[0])
|
|
442
|
881 #ifdef WIN32_NATIVE
|
|
428
|
882 && (drive || IS_DIRECTORY_SEP (nm[1]))
|
|
|
883 #endif
|
|
|
884 )
|
|
|
885 {
|
|
|
886 /* If it turns out that the filename we want to return is just a
|
|
|
887 suffix of FILENAME, we don't need to go through and edit
|
|
|
888 things; we just need to construct a new string using data
|
|
|
889 starting at the middle of FILENAME. If we set lose to a
|
|
|
890 non-zero value, that means we've discovered that we can't do
|
|
|
891 that cool trick. */
|
|
|
892 int lose = 0;
|
|
|
893
|
|
|
894 p = nm;
|
|
|
895 while (*p)
|
|
|
896 {
|
|
|
897 /* Since we know the name is absolute, we can assume that each
|
|
|
898 element starts with a "/". */
|
|
|
899
|
|
|
900 /* "." and ".." are hairy. */
|
|
|
901 if (IS_DIRECTORY_SEP (p[0])
|
|
|
902 && p[1] == '.'
|
|
|
903 && (IS_DIRECTORY_SEP (p[2])
|
|
|
904 || p[2] == 0
|
|
|
905 || (p[2] == '.' && (IS_DIRECTORY_SEP (p[3])
|
|
|
906 || p[3] == 0))))
|
|
|
907 lose = 1;
|
|
|
908 p++;
|
|
|
909 }
|
|
|
910 if (!lose)
|
|
|
911 {
|
|
442
|
912 #ifdef WIN32_NATIVE
|
|
428
|
913 /* Make sure directories are all separated with / or \ as
|
|
|
914 desired, but avoid allocation of a new string when not
|
|
|
915 required. */
|
|
|
916 CORRECT_DIR_SEPS (nm);
|
|
|
917 if (IS_DIRECTORY_SEP (nm[1]))
|
|
|
918 {
|
|
|
919 if (strcmp (nm, XSTRING_DATA (name)) != 0)
|
|
|
920 name = build_string (nm);
|
|
|
921 }
|
|
|
922 /* drive must be set, so this is okay */
|
|
|
923 else if (strcmp (nm - 2, XSTRING_DATA (name)) != 0)
|
|
|
924 {
|
|
|
925 name = make_string (nm - 2, p - nm + 2);
|
|
|
926 XSTRING_DATA (name)[0] = DRIVE_LETTER (drive);
|
|
|
927 XSTRING_DATA (name)[1] = ':';
|
|
|
928 }
|
|
442
|
929 RETURN_UNGCPRO (name);
|
|
|
930 #else /* not WIN32_NATIVE */
|
|
428
|
931 if (nm == XSTRING_DATA (name))
|
|
442
|
932 RETURN_UNGCPRO (name);
|
|
|
933 RETURN_UNGCPRO (build_string ((char *) nm));
|
|
|
934 #endif /* not WIN32_NATIVE */
|
|
428
|
935 }
|
|
|
936 }
|
|
|
937
|
|
|
938 /* At this point, nm might or might not be an absolute file name. We
|
|
|
939 need to expand ~ or ~user if present, otherwise prefix nm with
|
|
|
940 default_directory if nm is not absolute, and finally collapse /./
|
|
|
941 and /foo/../ sequences.
|
|
|
942
|
|
|
943 We set newdir to be the appropriate prefix if one is needed:
|
|
|
944 - the relevant user directory if nm starts with ~ or ~user
|
|
|
945 - the specified drive's working dir (DOS/NT only) if nm does not
|
|
|
946 start with /
|
|
|
947 - the value of default_directory.
|
|
|
948
|
|
|
949 Note that these prefixes are not guaranteed to be absolute (except
|
|
|
950 for the working dir of a drive). Therefore, to ensure we always
|
|
|
951 return an absolute name, if the final prefix is not absolute we
|
|
|
952 append it to the current working directory. */
|
|
|
953
|
|
|
954 newdir = 0;
|
|
|
955
|
|
|
956 if (nm[0] == '~') /* prefix ~ */
|
|
|
957 {
|
|
|
958 if (IS_DIRECTORY_SEP (nm[1])
|
|
|
959 || nm[1] == 0) /* ~ by itself */
|
|
|
960 {
|
|
440
|
961 Extbyte *newdir_external = get_home_directory ();
|
|
428
|
962
|
|
|
963 if (newdir_external == NULL)
|
|
|
964 newdir = (Bufbyte *) "";
|
|
|
965 else
|
|
440
|
966 TO_INTERNAL_FORMAT (C_STRING, newdir_external,
|
|
|
967 C_STRING_ALLOCA, (* ((char **) &newdir)),
|
|
|
968 Qfile_name);
|
|
428
|
969
|
|
|
970 nm++;
|
|
442
|
971 #ifdef WIN32_NATIVE
|
|
428
|
972 collapse_newdir = 0;
|
|
|
973 #endif
|
|
|
974 }
|
|
|
975 else /* ~user/filename */
|
|
|
976 {
|
|
|
977 for (p = nm; *p && (!IS_DIRECTORY_SEP (*p)); p++)
|
|
|
978 DO_NOTHING;
|
|
|
979 o = (Bufbyte *) alloca (p - nm + 1);
|
|
|
980 memcpy (o, (char *) nm, p - nm);
|
|
|
981 o [p - nm] = 0;
|
|
|
982
|
|
|
983 /* #### marcpa's syncing note: FSF uses getpwnam even on NT,
|
|
|
984 which does not work. The following works only if ~USER
|
|
|
985 names the user who runs this instance of XEmacs. While
|
|
|
986 NT is single-user (for the moment) you still can have
|
|
|
987 multiple user profiles users defined, each with its HOME.
|
|
|
988 Therefore, the following should be reworked to handle
|
|
|
989 this case. */
|
|
442
|
990 #ifdef WIN32_NATIVE
|
|
428
|
991 /* Now if the file given is "~foo/file" and HOME="c:/", then
|
|
|
992 we want the file to be named "c:/file" ("~foo" becomes
|
|
|
993 "c:/"). The variable o has "~foo", so we can use the
|
|
|
994 length of that string to offset nm. August Hill, 31 Aug
|
|
|
995 1998. */
|
|
|
996 newdir = (Bufbyte *) get_home_directory();
|
|
|
997 dostounix_filename (newdir);
|
|
|
998 nm += strlen(o) + 1;
|
|
442
|
999 #else /* not WIN32_NATIVE */
|
|
|
1000 #ifdef CYGWIN
|
|
428
|
1001 if ((user = user_login_name (NULL)) != NULL)
|
|
|
1002 {
|
|
|
1003 /* Does the user login name match the ~name? */
|
|
|
1004 if (strcmp (user, (char *) o + 1) == 0)
|
|
|
1005 {
|
|
|
1006 newdir = (Bufbyte *) get_home_directory();
|
|
|
1007 nm = p;
|
|
|
1008 }
|
|
|
1009 }
|
|
|
1010 if (! newdir)
|
|
|
1011 {
|
|
442
|
1012 #endif /* CYGWIN */
|
|
428
|
1013 /* Jamie reports that getpwnam() can get wedged by SIGIO/SIGALARM
|
|
|
1014 occurring in it. (It can call select()). */
|
|
|
1015 slow_down_interrupts ();
|
|
|
1016 pw = (struct passwd *) getpwnam ((char *) o + 1);
|
|
|
1017 speed_up_interrupts ();
|
|
|
1018 if (pw)
|
|
|
1019 {
|
|
|
1020 newdir = (Bufbyte *) pw -> pw_dir;
|
|
|
1021 nm = p;
|
|
|
1022 }
|
|
442
|
1023 #ifdef CYGWIN
|
|
428
|
1024 }
|
|
|
1025 #endif
|
|
442
|
1026 #endif /* not WIN32_NATIVE */
|
|
428
|
1027
|
|
|
1028 /* If we don't find a user of that name, leave the name
|
|
|
1029 unchanged; don't move nm forward to p. */
|
|
|
1030 }
|
|
|
1031 }
|
|
|
1032
|
|
442
|
1033 #ifdef WIN32_NATIVE
|
|
428
|
1034 /* On DOS and Windows, nm is absolute if a drive name was specified;
|
|
|
1035 use the drive's current directory as the prefix if needed. */
|
|
|
1036 if (!newdir && drive)
|
|
|
1037 {
|
|
|
1038 /* Get default directory if needed to make nm absolute. */
|
|
|
1039 if (!IS_DIRECTORY_SEP (nm[0]))
|
|
|
1040 {
|
|
|
1041 newdir = alloca (MAXPATHLEN + 1);
|
|
442
|
1042 if (!_getdcwd (toupper (drive) - 'A' + 1, newdir, MAXPATHLEN))
|
|
428
|
1043 newdir = NULL;
|
|
|
1044 }
|
|
|
1045 if (!newdir)
|
|
|
1046 {
|
|
|
1047 /* Either nm starts with /, or drive isn't mounted. */
|
|
|
1048 newdir = alloca (4);
|
|
|
1049 newdir[0] = DRIVE_LETTER (drive);
|
|
|
1050 newdir[1] = ':';
|
|
|
1051 newdir[2] = '/';
|
|
|
1052 newdir[3] = 0;
|
|
|
1053 }
|
|
|
1054 }
|
|
442
|
1055 #endif /* WIN32_NATIVE */
|
|
428
|
1056
|
|
|
1057 /* Finally, if no prefix has been specified and nm is not absolute,
|
|
|
1058 then it must be expanded relative to default_directory. */
|
|
|
1059
|
|
|
1060 if (1
|
|
442
|
1061 #ifndef WIN32_NATIVE
|
|
428
|
1062 /* /... alone is not absolute on DOS and Windows. */
|
|
|
1063 && !IS_DIRECTORY_SEP (nm[0])
|
|
|
1064 #else
|
|
|
1065 && !(IS_DIRECTORY_SEP (nm[0]) && IS_DIRECTORY_SEP (nm[1]))
|
|
|
1066 #endif
|
|
|
1067 && !newdir)
|
|
|
1068 {
|
|
|
1069 newdir = XSTRING_DATA (default_directory);
|
|
|
1070 }
|
|
|
1071
|
|
442
|
1072 #ifdef WIN32_NATIVE
|
|
428
|
1073 if (newdir)
|
|
|
1074 {
|
|
|
1075 /* First ensure newdir is an absolute name. */
|
|
|
1076 if (
|
|
442
|
1077 /* Detect Windows file names with drive specifiers. */
|
|
428
|
1078 ! (IS_DRIVE (newdir[0])
|
|
|
1079 && IS_DEVICE_SEP (newdir[1]) && IS_DIRECTORY_SEP (newdir[2]))
|
|
|
1080 /* Detect Windows file names in UNC format. */
|
|
|
1081 && ! (IS_DIRECTORY_SEP (newdir[0]) && IS_DIRECTORY_SEP (newdir[1]))
|
|
|
1082 /* Detect drive spec by itself */
|
|
|
1083 && ! (IS_DEVICE_SEP (newdir[1]) && newdir[2] == 0)
|
|
|
1084 )
|
|
|
1085 {
|
|
|
1086 /* Effectively, let newdir be (expand-file-name newdir cwd).
|
|
|
1087 Because of the admonition against calling expand-file-name
|
|
|
1088 when we have pointers into lisp strings, we accomplish this
|
|
|
1089 indirectly by prepending newdir to nm if necessary, and using
|
|
|
1090 cwd (or the wd of newdir's drive) as the new newdir. */
|
|
|
1091
|
|
|
1092 if (IS_DRIVE (newdir[0]) && newdir[1] == ':')
|
|
|
1093 {
|
|
|
1094 drive = newdir[0];
|
|
|
1095 newdir += 2;
|
|
|
1096 }
|
|
|
1097 if (!IS_DIRECTORY_SEP (nm[0]))
|
|
|
1098 {
|
|
|
1099 char * tmp = alloca (strlen (newdir) + strlen (nm) + 2);
|
|
|
1100 file_name_as_directory (tmp, newdir);
|
|
|
1101 strcat (tmp, nm);
|
|
|
1102 nm = tmp;
|
|
|
1103 }
|
|
|
1104 newdir = alloca (MAXPATHLEN + 1);
|
|
|
1105 if (drive)
|
|
|
1106 {
|
|
442
|
1107 if (!_getdcwd (toupper (drive) - 'A' + 1, newdir, MAXPATHLEN))
|
|
428
|
1108 newdir = "/";
|
|
|
1109 }
|
|
|
1110 else
|
|
|
1111 getwd (newdir);
|
|
|
1112 }
|
|
|
1113
|
|
|
1114 /* Strip off drive name from prefix, if present. */
|
|
|
1115 if (IS_DRIVE (newdir[0]) && newdir[1] == ':')
|
|
|
1116 {
|
|
|
1117 drive = newdir[0];
|
|
|
1118 newdir += 2;
|
|
|
1119 }
|
|
|
1120
|
|
|
1121 /* Keep only a prefix from newdir if nm starts with slash
|
|
|
1122 (/ /server/share for UNC, nothing otherwise). */
|
|
|
1123 if (IS_DIRECTORY_SEP (nm[0]) && collapse_newdir)
|
|
|
1124 {
|
|
|
1125 if (IS_DIRECTORY_SEP (newdir[0]) && IS_DIRECTORY_SEP (newdir[1]))
|
|
|
1126 {
|
|
|
1127 newdir = strcpy (alloca (strlen (newdir) + 1), newdir);
|
|
|
1128 p = newdir + 2;
|
|
|
1129 while (*p && !IS_DIRECTORY_SEP (*p)) p++;
|
|
|
1130 p++;
|
|
|
1131 while (*p && !IS_DIRECTORY_SEP (*p)) p++;
|
|
|
1132 *p = 0;
|
|
|
1133 }
|
|
|
1134 else
|
|
|
1135 newdir = "";
|
|
|
1136 }
|
|
|
1137 }
|
|
442
|
1138 #endif /* WIN32_NATIVE */
|
|
428
|
1139
|
|
|
1140 if (newdir)
|
|
|
1141 {
|
|
|
1142 /* Get rid of any slash at the end of newdir, unless newdir is
|
|
|
1143 just // (an incomplete UNC name). */
|
|
|
1144 length = strlen ((char *) newdir);
|
|
|
1145 if (length > 1 && IS_DIRECTORY_SEP (newdir[length - 1])
|
|
442
|
1146 #ifdef WIN32_NATIVE
|
|
428
|
1147 && !(length == 2 && IS_DIRECTORY_SEP (newdir[0]))
|
|
|
1148 #endif
|
|
|
1149 )
|
|
|
1150 {
|
|
|
1151 Bufbyte *temp = (Bufbyte *) alloca (length);
|
|
|
1152 memcpy (temp, newdir, length - 1);
|
|
|
1153 temp[length - 1] = 0;
|
|
|
1154 newdir = temp;
|
|
|
1155 }
|
|
|
1156 tlen = length + 1;
|
|
|
1157 }
|
|
|
1158 else
|
|
|
1159 tlen = 0;
|
|
|
1160
|
|
|
1161 /* Now concatenate the directory and name to new space in the stack frame */
|
|
|
1162 tlen += strlen ((char *) nm) + 1;
|
|
442
|
1163 #ifdef WIN32_NATIVE
|
|
428
|
1164 /* Add reserved space for drive name. (The Microsoft x86 compiler
|
|
|
1165 produces incorrect code if the following two lines are combined.) */
|
|
|
1166 target = (Bufbyte *) alloca (tlen + 2);
|
|
|
1167 target += 2;
|
|
442
|
1168 #else /* not WIN32_NATIVE */
|
|
428
|
1169 target = (Bufbyte *) alloca (tlen);
|
|
442
|
1170 #endif /* not WIN32_NATIVE */
|
|
428
|
1171 *target = 0;
|
|
|
1172
|
|
|
1173 if (newdir)
|
|
|
1174 {
|
|
|
1175 if (nm[0] == 0 || IS_DIRECTORY_SEP (nm[0]))
|
|
|
1176 strcpy ((char *) target, (char *) newdir);
|
|
|
1177 else
|
|
|
1178 file_name_as_directory ((char *) target, (char *) newdir);
|
|
|
1179 }
|
|
|
1180
|
|
|
1181 strcat ((char *) target, (char *) nm);
|
|
|
1182
|
|
|
1183 /* ASSERT (IS_DIRECTORY_SEP (target[0])) if not VMS */
|
|
|
1184
|
|
|
1185 /* Now canonicalize by removing /. and /foo/.. if they appear. */
|
|
|
1186
|
|
|
1187 p = target;
|
|
|
1188 o = target;
|
|
|
1189
|
|
|
1190 while (*p)
|
|
|
1191 {
|
|
|
1192 if (!IS_DIRECTORY_SEP (*p))
|
|
|
1193 {
|
|
|
1194 *o++ = *p++;
|
|
|
1195 }
|
|
|
1196 else if (IS_DIRECTORY_SEP (p[0])
|
|
|
1197 && p[1] == '.'
|
|
|
1198 && (IS_DIRECTORY_SEP (p[2])
|
|
|
1199 || p[2] == 0))
|
|
|
1200 {
|
|
|
1201 /* If "/." is the entire filename, keep the "/". Otherwise,
|
|
|
1202 just delete the whole "/.". */
|
|
|
1203 if (o == target && p[2] == '\0')
|
|
|
1204 *o++ = *p;
|
|
|
1205 p += 2;
|
|
|
1206 }
|
|
|
1207 else if (IS_DIRECTORY_SEP (p[0]) && p[1] == '.' && p[2] == '.'
|
|
|
1208 /* `/../' is the "superroot" on certain file systems. */
|
|
|
1209 && o != target
|
|
|
1210 && (IS_DIRECTORY_SEP (p[3]) || p[3] == 0))
|
|
|
1211 {
|
|
|
1212 while (o != target && (--o) && !IS_DIRECTORY_SEP (*o))
|
|
|
1213 ;
|
|
|
1214 /* Keep initial / only if this is the whole name. */
|
|
|
1215 if (o == target && IS_ANY_SEP (*o) && p[3] == 0)
|
|
|
1216 ++o;
|
|
|
1217 p += 3;
|
|
|
1218 }
|
|
442
|
1219 #ifdef WIN32_NATIVE
|
|
428
|
1220 /* if drive is set, we're not dealing with an UNC, so
|
|
|
1221 multiple dir-seps are redundant (and reportedly cause trouble
|
|
|
1222 under win95) */
|
|
|
1223 else if (drive && IS_DIRECTORY_SEP (p[0]) && IS_DIRECTORY_SEP (p[1]))
|
|
|
1224 ++p;
|
|
|
1225 #endif
|
|
|
1226 else
|
|
|
1227 {
|
|
|
1228 *o++ = *p++;
|
|
|
1229 }
|
|
|
1230 }
|
|
|
1231
|
|
442
|
1232 #ifdef WIN32_NATIVE
|
|
428
|
1233 /* At last, set drive name, except for network file name. */
|
|
|
1234 if (drive)
|
|
|
1235 {
|
|
|
1236 target -= 2;
|
|
|
1237 target[0] = DRIVE_LETTER (drive);
|
|
|
1238 target[1] = ':';
|
|
|
1239 }
|
|
|
1240 else
|
|
|
1241 {
|
|
|
1242 assert (IS_DIRECTORY_SEP (target[0]) && IS_DIRECTORY_SEP (target[1]));
|
|
|
1243 }
|
|
|
1244 CORRECT_DIR_SEPS (target);
|
|
442
|
1245 #endif /* WIN32_NATIVE */
|
|
|
1246
|
|
|
1247 RETURN_UNGCPRO (make_string (target, o - target));
|
|
428
|
1248 }
|
|
|
1249
|
|
|
1250 DEFUN ("file-truename", Ffile_truename, 1, 2, 0, /*
|
|
444
|
1251 Return the canonical name of FILENAME.
|
|
|
1252 Second arg DEFAULT is directory to start with if FILENAME is relative
|
|
428
|
1253 (does not start with slash); if DEFAULT is nil or missing,
|
|
444
|
1254 the current buffer's value of `default-directory' is used.
|
|
428
|
1255 No component of the resulting pathname will be a symbolic link, as
|
|
|
1256 in the realpath() function.
|
|
|
1257 */
|
|
|
1258 (filename, default_))
|
|
|
1259 {
|
|
442
|
1260 /* This function can GC. GC checked 2000-07-28 ben. */
|
|
428
|
1261 Lisp_Object expanded_name;
|
|
|
1262 struct gcpro gcpro1;
|
|
|
1263
|
|
|
1264 CHECK_STRING (filename);
|
|
|
1265
|
|
|
1266 expanded_name = Fexpand_file_name (filename, default_);
|
|
|
1267
|
|
|
1268 if (!STRINGP (expanded_name))
|
|
|
1269 return Qnil;
|
|
|
1270
|
|
|
1271 GCPRO1 (expanded_name);
|
|
442
|
1272
|
|
|
1273 {
|
|
|
1274 Lisp_Object handler =
|
|
|
1275 Ffind_file_name_handler (expanded_name, Qfile_truename);
|
|
|
1276
|
|
|
1277 if (!NILP (handler))
|
|
|
1278 RETURN_UNGCPRO
|
|
|
1279 (call2_check_string (handler, Qfile_truename, expanded_name));
|
|
|
1280 }
|
|
428
|
1281
|
|
|
1282 {
|
|
|
1283 char resolved_path[MAXPATHLEN];
|
|
|
1284 Extbyte *path;
|
|
|
1285 Extbyte *p;
|
|
440
|
1286 Extcount elen;
|
|
|
1287
|
|
|
1288 TO_EXTERNAL_FORMAT (LISP_STRING, expanded_name,
|
|
|
1289 ALLOCA, (path, elen),
|
|
|
1290 Qfile_name);
|
|
428
|
1291 p = path;
|
|
|
1292 if (elen > MAXPATHLEN)
|
|
|
1293 goto toolong;
|
|
442
|
1294
|
|
428
|
1295 /* Try doing it all at once. */
|
|
|
1296 /* !! Does realpath() Mule-encapsulate?
|
|
|
1297 Answer: Nope! So we do it above */
|
|
|
1298 if (!xrealpath ((char *) path, resolved_path))
|
|
|
1299 {
|
|
|
1300 /* Didn't resolve it -- have to do it one component at a time. */
|
|
|
1301 /* "realpath" is a typically useless, stupid un*x piece of crap.
|
|
|
1302 It claims to return a useful value in the "error" case, but since
|
|
|
1303 there is no indication provided of how far along the pathname
|
|
|
1304 the function went before erring, there is no way to use the
|
|
442
|
1305 partial result returned. What a piece of junk.
|
|
|
1306
|
|
|
1307 The above comment refers to historical versions of
|
|
|
1308 realpath(). The Unix98 specs state:
|
|
|
1309
|
|
|
1310 "On successful completion, realpath() returns a
|
|
|
1311 pointer to the resolved name. Otherwise, realpath()
|
|
|
1312 returns a null pointer and sets errno to indicate the
|
|
|
1313 error, and the contents of the buffer pointed to by
|
|
|
1314 resolved_name are undefined."
|
|
|
1315
|
|
|
1316 Since we depend on undocumented semantics of various system realpath()s,
|
|
|
1317 we just use our own version in realpath.c. */
|
|
428
|
1318 for (;;)
|
|
|
1319 {
|
|
446
|
1320 Extbyte *pos;
|
|
|
1321
|
|
|
1322 #ifdef WIN32_NATIVE
|
|
|
1323 if (IS_DRIVE (p[0]) && IS_DEVICE_SEP (p[1])
|
|
|
1324 && IS_DIRECTORY_SEP (p[2]))
|
|
|
1325 /* don't test c: on windows */
|
|
|
1326 p = p+2;
|
|
|
1327 else if (IS_DIRECTORY_SEP (p[0]) && IS_DIRECTORY_SEP (p[1]))
|
|
|
1328 /* start after // */
|
|
|
1329 p = p+1;
|
|
|
1330 #endif
|
|
|
1331 for (pos = p + 1; pos < path + elen; pos++)
|
|
|
1332 if (IS_DIRECTORY_SEP (*pos))
|
|
|
1333 {
|
|
|
1334 *(p = pos) = 0;
|
|
|
1335 break;
|
|
|
1336 }
|
|
|
1337 if (p != pos)
|
|
|
1338 p = 0;
|
|
428
|
1339
|
|
|
1340 if (xrealpath ((char *) path, resolved_path))
|
|
|
1341 {
|
|
|
1342 if (p)
|
|
446
|
1343 *p = DIRECTORY_SEP;
|
|
428
|
1344 else
|
|
|
1345 break;
|
|
|
1346
|
|
|
1347 }
|
|
|
1348 else if (errno == ENOENT || errno == EACCES)
|
|
|
1349 {
|
|
|
1350 /* Failed on this component. Just tack on the rest of
|
|
|
1351 the string and we are done. */
|
|
|
1352 int rlen = strlen (resolved_path);
|
|
|
1353
|
|
|
1354 /* "On failure, it returns NULL, sets errno to indicate
|
|
|
1355 the error, and places in resolved_path the absolute pathname
|
|
|
1356 of the path component which could not be resolved." */
|
|
442
|
1357
|
|
|
1358 if (p)
|
|
428
|
1359 {
|
|
|
1360 int plen = elen - (p - path);
|
|
|
1361
|
|
446
|
1362 if (rlen > 1 && IS_DIRECTORY_SEP (resolved_path[rlen - 1]))
|
|
428
|
1363 rlen = rlen - 1;
|
|
|
1364
|
|
|
1365 if (plen + rlen + 1 > countof (resolved_path))
|
|
|
1366 goto toolong;
|
|
|
1367
|
|
446
|
1368 resolved_path[rlen] = DIRECTORY_SEP;
|
|
428
|
1369 memcpy (resolved_path + rlen + 1, p + 1, plen + 1 - 1);
|
|
|
1370 }
|
|
|
1371 break;
|
|
|
1372 }
|
|
|
1373 else
|
|
|
1374 goto lose;
|
|
|
1375 }
|
|
|
1376 }
|
|
|
1377
|
|
|
1378 {
|
|
442
|
1379 Lisp_Object resolved_name;
|
|
428
|
1380 int rlen = strlen (resolved_path);
|
|
446
|
1381 if (elen > 0 && IS_DIRECTORY_SEP (XSTRING_BYTE (expanded_name, elen - 1))
|
|
|
1382 && !(rlen > 0 && IS_DIRECTORY_SEP (resolved_path[rlen - 1])))
|
|
428
|
1383 {
|
|
|
1384 if (rlen + 1 > countof (resolved_path))
|
|
|
1385 goto toolong;
|
|
446
|
1386 resolved_path[rlen++] = DIRECTORY_SEP;
|
|
442
|
1387 resolved_path[rlen] = '\0';
|
|
428
|
1388 }
|
|
442
|
1389 TO_INTERNAL_FORMAT (DATA, (resolved_path, rlen),
|
|
|
1390 LISP_STRING, resolved_name,
|
|
|
1391 Qfile_name);
|
|
|
1392 RETURN_UNGCPRO (resolved_name);
|
|
428
|
1393 }
|
|
|
1394
|
|
|
1395 toolong:
|
|
|
1396 errno = ENAMETOOLONG;
|
|
|
1397 goto lose;
|
|
|
1398 lose:
|
|
|
1399 report_file_error ("Finding truename", list1 (expanded_name));
|
|
|
1400 }
|
|
442
|
1401 RETURN_UNGCPRO (Qnil);
|
|
428
|
1402 }
|
|
|
1403
|
|
|
1404
|
|
|
1405 DEFUN ("substitute-in-file-name", Fsubstitute_in_file_name, 1, 1, 0, /*
|
|
|
1406 Substitute environment variables referred to in FILENAME.
|
|
|
1407 `$FOO' where FOO is an environment variable name means to substitute
|
|
|
1408 the value of that variable. The variable name should be terminated
|
|
444
|
1409 with a character, not a letter, digit or underscore; otherwise, enclose
|
|
428
|
1410 the entire variable name in braces.
|
|
|
1411 If `/~' appears, all of FILENAME through that `/' is discarded.
|
|
|
1412 */
|
|
444
|
1413 (filename))
|
|
428
|
1414 {
|
|
442
|
1415 /* This function can GC. GC checked 2000-07-28 ben. */
|
|
428
|
1416 Bufbyte *nm;
|
|
|
1417
|
|
|
1418 Bufbyte *s, *p, *o, *x, *endp;
|
|
|
1419 Bufbyte *target = 0;
|
|
|
1420 int total = 0;
|
|
|
1421 int substituted = 0;
|
|
|
1422 Bufbyte *xnm;
|
|
|
1423 Lisp_Object handler;
|
|
|
1424
|
|
444
|
1425 CHECK_STRING (filename);
|
|
428
|
1426
|
|
|
1427 /* If the file name has special constructs in it,
|
|
|
1428 call the corresponding file handler. */
|
|
444
|
1429 handler = Ffind_file_name_handler (filename, Qsubstitute_in_file_name);
|
|
428
|
1430 if (!NILP (handler))
|
|
|
1431 return call2_check_string_or_nil (handler, Qsubstitute_in_file_name,
|
|
444
|
1432 filename);
|
|
|
1433
|
|
|
1434 nm = XSTRING_DATA (filename);
|
|
|
1435 endp = nm + XSTRING_LENGTH (filename);
|
|
428
|
1436
|
|
|
1437 /* If /~ or // appears, discard everything through first slash. */
|
|
|
1438
|
|
|
1439 for (p = nm; p != endp; p++)
|
|
|
1440 {
|
|
|
1441 if ((p[0] == '~'
|
|
442
|
1442 #if defined (WIN32_NATIVE) || defined (CYGWIN)
|
|
440
|
1443 /* // at start of file name is meaningful in WindowsNT systems */
|
|
428
|
1444 || (IS_DIRECTORY_SEP (p[0]) && p - 1 != nm)
|
|
442
|
1445 #else /* not (WIN32_NATIVE || CYGWIN) */
|
|
428
|
1446 || IS_DIRECTORY_SEP (p[0])
|
|
442
|
1447 #endif /* not (WIN32_NATIVE || CYGWIN) */
|
|
428
|
1448 )
|
|
|
1449 && p != nm
|
|
|
1450 && (IS_DIRECTORY_SEP (p[-1])))
|
|
|
1451 {
|
|
|
1452 nm = p;
|
|
|
1453 substituted = 1;
|
|
|
1454 }
|
|
442
|
1455 #ifdef WIN32_NATIVE
|
|
428
|
1456 /* see comment in expand-file-name about drive specifiers */
|
|
|
1457 else if (IS_DRIVE (p[0]) && p[1] == ':'
|
|
|
1458 && p > nm && IS_DIRECTORY_SEP (p[-1]))
|
|
|
1459 {
|
|
|
1460 nm = p;
|
|
|
1461 substituted = 1;
|
|
|
1462 }
|
|
442
|
1463 #endif /* WIN32_NATIVE */
|
|
428
|
1464 }
|
|
|
1465
|
|
|
1466 /* See if any variables are substituted into the string
|
|
|
1467 and find the total length of their values in `total' */
|
|
|
1468
|
|
|
1469 for (p = nm; p != endp;)
|
|
|
1470 if (*p != '$')
|
|
|
1471 p++;
|
|
|
1472 else
|
|
|
1473 {
|
|
|
1474 p++;
|
|
|
1475 if (p == endp)
|
|
|
1476 goto badsubst;
|
|
|
1477 else if (*p == '$')
|
|
|
1478 {
|
|
|
1479 /* "$$" means a single "$" */
|
|
|
1480 p++;
|
|
|
1481 total -= 1;
|
|
|
1482 substituted = 1;
|
|
|
1483 continue;
|
|
|
1484 }
|
|
|
1485 else if (*p == '{')
|
|
|
1486 {
|
|
|
1487 o = ++p;
|
|
|
1488 while (p != endp && *p != '}') p++;
|
|
|
1489 if (*p != '}') goto missingclose;
|
|
|
1490 s = p;
|
|
|
1491 }
|
|
|
1492 else
|
|
|
1493 {
|
|
|
1494 o = p;
|
|
|
1495 while (p != endp && (isalnum (*p) || *p == '_')) p++;
|
|
|
1496 s = p;
|
|
|
1497 }
|
|
|
1498
|
|
|
1499 /* Copy out the variable name */
|
|
|
1500 target = (Bufbyte *) alloca (s - o + 1);
|
|
|
1501 strncpy ((char *) target, (char *) o, s - o);
|
|
|
1502 target[s - o] = 0;
|
|
442
|
1503 #ifdef WIN32_NATIVE
|
|
428
|
1504 strupr (target); /* $home == $HOME etc. */
|
|
442
|
1505 #endif /* WIN32_NATIVE */
|
|
428
|
1506
|
|
|
1507 /* Get variable value */
|
|
|
1508 o = (Bufbyte *) egetenv ((char *) target);
|
|
|
1509 if (!o) goto badvar;
|
|
|
1510 total += strlen ((char *) o);
|
|
|
1511 substituted = 1;
|
|
|
1512 }
|
|
|
1513
|
|
|
1514 if (!substituted)
|
|
444
|
1515 return filename;
|
|
|
1516
|
|
|
1517 /* If substitution required, recopy the filename and do it */
|
|
428
|
1518 /* Make space in stack frame for the new copy */
|
|
444
|
1519 xnm = (Bufbyte *) alloca (XSTRING_LENGTH (filename) + total + 1);
|
|
428
|
1520 x = xnm;
|
|
|
1521
|
|
|
1522 /* Copy the rest of the name through, replacing $ constructs with values */
|
|
|
1523 for (p = nm; *p;)
|
|
|
1524 if (*p != '$')
|
|
|
1525 *x++ = *p++;
|
|
|
1526 else
|
|
|
1527 {
|
|
|
1528 p++;
|
|
|
1529 if (p == endp)
|
|
|
1530 goto badsubst;
|
|
|
1531 else if (*p == '$')
|
|
|
1532 {
|
|
|
1533 *x++ = *p++;
|
|
|
1534 continue;
|
|
|
1535 }
|
|
|
1536 else if (*p == '{')
|
|
|
1537 {
|
|
|
1538 o = ++p;
|
|
|
1539 while (p != endp && *p != '}') p++;
|
|
|
1540 if (*p != '}') goto missingclose;
|
|
|
1541 s = p++;
|
|
|
1542 }
|
|
|
1543 else
|
|
|
1544 {
|
|
|
1545 o = p;
|
|
|
1546 while (p != endp && (isalnum (*p) || *p == '_')) p++;
|
|
|
1547 s = p;
|
|
|
1548 }
|
|
|
1549
|
|
|
1550 /* Copy out the variable name */
|
|
|
1551 target = (Bufbyte *) alloca (s - o + 1);
|
|
|
1552 strncpy ((char *) target, (char *) o, s - o);
|
|
|
1553 target[s - o] = 0;
|
|
442
|
1554 #ifdef WIN32_NATIVE
|
|
428
|
1555 strupr (target); /* $home == $HOME etc. */
|
|
442
|
1556 #endif /* WIN32_NATIVE */
|
|
428
|
1557
|
|
|
1558 /* Get variable value */
|
|
|
1559 o = (Bufbyte *) egetenv ((char *) target);
|
|
|
1560 if (!o)
|
|
|
1561 goto badvar;
|
|
|
1562
|
|
|
1563 strcpy ((char *) x, (char *) o);
|
|
|
1564 x += strlen ((char *) o);
|
|
|
1565 }
|
|
|
1566
|
|
|
1567 *x = 0;
|
|
|
1568
|
|
|
1569 /* If /~ or // appears, discard everything through first slash. */
|
|
|
1570
|
|
|
1571 for (p = xnm; p != x; p++)
|
|
|
1572 if ((p[0] == '~'
|
|
442
|
1573 #if defined (WIN32_NATIVE)
|
|
428
|
1574 || (IS_DIRECTORY_SEP (p[0]) && p - 1 != xnm)
|
|
442
|
1575 #else /* not WIN32_NATIVE */
|
|
428
|
1576 || IS_DIRECTORY_SEP (p[0])
|
|
442
|
1577 #endif /* not WIN32_NATIVE */
|
|
428
|
1578 )
|
|
|
1579 /* don't do p[-1] if that would go off the beginning --jwz */
|
|
|
1580 && p != nm && p > xnm && IS_DIRECTORY_SEP (p[-1]))
|
|
|
1581 xnm = p;
|
|
442
|
1582 #ifdef WIN32_NATIVE
|
|
428
|
1583 else if (IS_DRIVE (p[0]) && p[1] == ':'
|
|
|
1584 && p > nm && IS_DIRECTORY_SEP (p[-1]))
|
|
|
1585 xnm = p;
|
|
|
1586 #endif
|
|
|
1587
|
|
|
1588 return make_string (xnm, x - xnm);
|
|
|
1589
|
|
|
1590 badsubst:
|
|
444
|
1591 syntax_error ("Bad format environment-variable substitution", filename);
|
|
428
|
1592 missingclose:
|
|
442
|
1593 syntax_error ("Missing \"}\" in environment-variable substitution",
|
|
444
|
1594 filename);
|
|
428
|
1595 badvar:
|
|
442
|
1596 syntax_error_2 ("Substituting nonexistent environment variable",
|
|
444
|
1597 filename, build_string ((char *) target));
|
|
428
|
1598
|
|
|
1599 /* NOTREACHED */
|
|
|
1600 return Qnil; /* suppress compiler warning */
|
|
|
1601 }
|
|
|
1602
|
|
|
1603 /* A slightly faster and more convenient way to get
|
|
|
1604 (directory-file-name (expand-file-name FOO)). */
|
|
|
1605
|
|
|
1606 Lisp_Object
|
|
|
1607 expand_and_dir_to_file (Lisp_Object filename, Lisp_Object defdir)
|
|
|
1608 {
|
|
442
|
1609 /* This function can call Lisp. GC checked 2000-07-28 ben */
|
|
428
|
1610 Lisp_Object abspath;
|
|
|
1611 struct gcpro gcpro1;
|
|
|
1612
|
|
|
1613 abspath = Fexpand_file_name (filename, defdir);
|
|
|
1614 GCPRO1 (abspath);
|
|
|
1615 /* Remove final slash, if any (unless path is root).
|
|
|
1616 stat behaves differently depending! */
|
|
|
1617 if (XSTRING_LENGTH (abspath) > 1
|
|
|
1618 && IS_DIRECTORY_SEP (XSTRING_BYTE (abspath, XSTRING_LENGTH (abspath) - 1))
|
|
|
1619 && !IS_DEVICE_SEP (XSTRING_BYTE (abspath, XSTRING_LENGTH (abspath) - 2)))
|
|
|
1620 /* We cannot take shortcuts; they might be wrong for magic file names. */
|
|
|
1621 abspath = Fdirectory_file_name (abspath);
|
|
|
1622 UNGCPRO;
|
|
|
1623 return abspath;
|
|
|
1624 }
|
|
|
1625
|
|
|
1626 /* Signal an error if the file ABSNAME already exists.
|
|
|
1627 If INTERACTIVE is nonzero, ask the user whether to proceed,
|
|
|
1628 and bypass the error if the user says to go ahead.
|
|
|
1629 QUERYSTRING is a name for the action that is being considered
|
|
|
1630 to alter the file.
|
|
|
1631 *STATPTR is used to store the stat information if the file exists.
|
|
|
1632 If the file does not exist, STATPTR->st_mode is set to 0. */
|
|
|
1633
|
|
|
1634 static void
|
|
442
|
1635 barf_or_query_if_file_exists (Lisp_Object absname, const char *querystring,
|
|
428
|
1636 int interactive, struct stat *statptr)
|
|
|
1637 {
|
|
442
|
1638 /* This function can call Lisp. GC checked 2000-07-28 ben */
|
|
428
|
1639 struct stat statbuf;
|
|
|
1640
|
|
|
1641 /* stat is a good way to tell whether the file exists,
|
|
|
1642 regardless of what access permissions it has. */
|
|
442
|
1643 if (xemacs_stat ((char *) XSTRING_DATA (absname), &statbuf) >= 0)
|
|
428
|
1644 {
|
|
|
1645 Lisp_Object tem;
|
|
|
1646
|
|
|
1647 if (interactive)
|
|
|
1648 {
|
|
|
1649 Lisp_Object prompt;
|
|
|
1650 struct gcpro gcpro1;
|
|
|
1651
|
|
|
1652 prompt = emacs_doprnt_string_c
|
|
442
|
1653 ((const Bufbyte *) GETTEXT ("File %s already exists; %s anyway? "),
|
|
428
|
1654 Qnil, -1, XSTRING_DATA (absname),
|
|
|
1655 GETTEXT (querystring));
|
|
|
1656
|
|
|
1657 GCPRO1 (prompt);
|
|
|
1658 tem = call1 (Qyes_or_no_p, prompt);
|
|
|
1659 UNGCPRO;
|
|
|
1660 }
|
|
|
1661 else
|
|
|
1662 tem = Qnil;
|
|
|
1663
|
|
|
1664 if (NILP (tem))
|
|
|
1665 Fsignal (Qfile_already_exists,
|
|
|
1666 list2 (build_translated_string ("File already exists"),
|
|
|
1667 absname));
|
|
|
1668 if (statptr)
|
|
|
1669 *statptr = statbuf;
|
|
|
1670 }
|
|
|
1671 else
|
|
|
1672 {
|
|
|
1673 if (statptr)
|
|
|
1674 statptr->st_mode = 0;
|
|
|
1675 }
|
|
|
1676 return;
|
|
|
1677 }
|
|
|
1678
|
|
|
1679 DEFUN ("copy-file", Fcopy_file, 2, 4,
|
|
|
1680 "fCopy file: \nFCopy %s to file: \np\nP", /*
|
|
444
|
1681 Copy FILENAME to NEWNAME. Both args must be strings.
|
|
428
|
1682 Signals a `file-already-exists' error if file NEWNAME already exists,
|
|
|
1683 unless a third argument OK-IF-ALREADY-EXISTS is supplied and non-nil.
|
|
|
1684 A number as third arg means request confirmation if NEWNAME already exists.
|
|
|
1685 This is what happens in interactive use with M-x.
|
|
|
1686 Fourth arg KEEP-TIME non-nil means give the new file the same
|
|
|
1687 last-modified time as the old one. (This works on only some systems.)
|
|
|
1688 A prefix arg makes KEEP-TIME non-nil.
|
|
|
1689 */
|
|
|
1690 (filename, newname, ok_if_already_exists, keep_time))
|
|
|
1691 {
|
|
442
|
1692 /* This function can call Lisp. GC checked 2000-07-28 ben */
|
|
428
|
1693 int ifd, ofd, n;
|
|
|
1694 char buf[16 * 1024];
|
|
|
1695 struct stat st, out_st;
|
|
|
1696 Lisp_Object handler;
|
|
|
1697 int speccount = specpdl_depth ();
|
|
|
1698 struct gcpro gcpro1, gcpro2;
|
|
|
1699 /* Lisp_Object args[6]; */
|
|
|
1700 int input_file_statable_p;
|
|
|
1701
|
|
|
1702 GCPRO2 (filename, newname);
|
|
|
1703 CHECK_STRING (filename);
|
|
|
1704 CHECK_STRING (newname);
|
|
|
1705 filename = Fexpand_file_name (filename, Qnil);
|
|
|
1706 newname = Fexpand_file_name (newname, Qnil);
|
|
|
1707
|
|
|
1708 /* If the input file name has special constructs in it,
|
|
|
1709 call the corresponding file handler. */
|
|
|
1710 handler = Ffind_file_name_handler (filename, Qcopy_file);
|
|
|
1711 /* Likewise for output file name. */
|
|
|
1712 if (NILP (handler))
|
|
|
1713 handler = Ffind_file_name_handler (newname, Qcopy_file);
|
|
|
1714 if (!NILP (handler))
|
|
|
1715 {
|
|
|
1716 UNGCPRO;
|
|
|
1717 return call5 (handler, Qcopy_file, filename, newname,
|
|
|
1718 ok_if_already_exists, keep_time);
|
|
|
1719 }
|
|
|
1720
|
|
|
1721 /* When second argument is a directory, copy the file into it.
|
|
|
1722 (copy-file "foo" "bar/") == (copy-file "foo" "bar/foo")
|
|
|
1723 */
|
|
|
1724 if (!NILP (Ffile_directory_p (newname)))
|
|
|
1725 {
|
|
|
1726 Lisp_Object args[3];
|
|
|
1727 struct gcpro ngcpro1;
|
|
|
1728 int i = 1;
|
|
|
1729
|
|
|
1730 args[0] = newname;
|
|
|
1731 args[1] = Qnil; args[2] = Qnil;
|
|
|
1732 NGCPRO1 (*args);
|
|
|
1733 ngcpro1.nvars = 3;
|
|
442
|
1734 if (!IS_DIRECTORY_SEP (XSTRING_BYTE (newname,
|
|
|
1735 XSTRING_LENGTH (newname) - 1)))
|
|
|
1736
|
|
|
1737 args[i++] = Fchar_to_string (Vdirectory_sep_char);
|
|
428
|
1738 args[i++] = Ffile_name_nondirectory (filename);
|
|
|
1739 newname = Fconcat (i, args);
|
|
|
1740 NUNGCPRO;
|
|
|
1741 }
|
|
|
1742
|
|
|
1743 if (NILP (ok_if_already_exists)
|
|
|
1744 || INTP (ok_if_already_exists))
|
|
|
1745 barf_or_query_if_file_exists (newname, "copy to it",
|
|
|
1746 INTP (ok_if_already_exists), &out_st);
|
|
442
|
1747 else if (xemacs_stat ((const char *) XSTRING_DATA (newname), &out_st) < 0)
|
|
428
|
1748 out_st.st_mode = 0;
|
|
|
1749
|
|
|
1750 ifd = interruptible_open ((char *) XSTRING_DATA (filename), O_RDONLY | OPEN_BINARY, 0);
|
|
|
1751 if (ifd < 0)
|
|
|
1752 report_file_error ("Opening input file", list1 (filename));
|
|
|
1753
|
|
|
1754 record_unwind_protect (close_file_unwind, make_int (ifd));
|
|
|
1755
|
|
|
1756 /* We can only copy regular files and symbolic links. Other files are not
|
|
|
1757 copyable by us. */
|
|
|
1758 input_file_statable_p = (fstat (ifd, &st) >= 0);
|
|
|
1759
|
|
442
|
1760 #ifndef WIN32_NATIVE
|
|
428
|
1761 if (out_st.st_mode != 0
|
|
|
1762 && st.st_dev == out_st.st_dev && st.st_ino == out_st.st_ino)
|
|
|
1763 {
|
|
|
1764 errno = 0;
|
|
|
1765 report_file_error ("Input and output files are the same",
|
|
|
1766 list2 (filename, newname));
|
|
|
1767 }
|
|
|
1768 #endif
|
|
|
1769
|
|
|
1770 #if defined (S_ISREG) && defined (S_ISLNK)
|
|
|
1771 if (input_file_statable_p)
|
|
|
1772 {
|
|
|
1773 if (!(S_ISREG (st.st_mode))
|
|
|
1774 /* XEmacs: have to allow S_ISCHR in order to copy /dev/null */
|
|
|
1775 #ifdef S_ISCHR
|
|
|
1776 && !(S_ISCHR (st.st_mode))
|
|
|
1777 #endif
|
|
|
1778 && !(S_ISLNK (st.st_mode)))
|
|
|
1779 {
|
|
|
1780 #if defined (EISDIR)
|
|
|
1781 /* Get a better looking error message. */
|
|
|
1782 errno = EISDIR;
|
|
|
1783 #endif /* EISDIR */
|
|
|
1784 report_file_error ("Non-regular file", list1 (filename));
|
|
|
1785 }
|
|
|
1786 }
|
|
|
1787 #endif /* S_ISREG && S_ISLNK */
|
|
|
1788
|
|
|
1789 ofd = open( (char *) XSTRING_DATA (newname),
|
|
|
1790 O_WRONLY | O_CREAT | O_TRUNC | OPEN_BINARY, CREAT_MODE);
|
|
|
1791 if (ofd < 0)
|
|
|
1792 report_file_error ("Opening output file", list1 (newname));
|
|
|
1793
|
|
|
1794 {
|
|
|
1795 Lisp_Object ofd_locative = noseeum_cons (make_int (ofd), Qnil);
|
|
|
1796
|
|
|
1797 record_unwind_protect (close_file_unwind, ofd_locative);
|
|
|
1798
|
|
|
1799 while ((n = read_allowing_quit (ifd, buf, sizeof (buf))) > 0)
|
|
|
1800 {
|
|
|
1801 if (write_allowing_quit (ofd, buf, n) != n)
|
|
|
1802 report_file_error ("I/O error", list1 (newname));
|
|
|
1803 }
|
|
|
1804
|
|
|
1805 /* Closing the output clobbers the file times on some systems. */
|
|
|
1806 if (close (ofd) < 0)
|
|
|
1807 report_file_error ("I/O error", list1 (newname));
|
|
|
1808
|
|
|
1809 if (input_file_statable_p)
|
|
|
1810 {
|
|
442
|
1811 if (!NILP (keep_time))
|
|
|
1812 {
|
|
|
1813 EMACS_TIME atime, mtime;
|
|
|
1814 EMACS_SET_SECS_USECS (atime, st.st_atime, 0);
|
|
|
1815 EMACS_SET_SECS_USECS (mtime, st.st_mtime, 0);
|
|
|
1816 if (set_file_times ((char *) XSTRING_DATA (newname), atime,
|
|
|
1817 mtime))
|
|
|
1818 report_file_error ("I/O error", list1 (newname));
|
|
|
1819 }
|
|
|
1820 chmod ((const char *) XSTRING_DATA (newname),
|
|
|
1821 st.st_mode & 07777);
|
|
428
|
1822 }
|
|
|
1823
|
|
|
1824 /* We'll close it by hand */
|
|
|
1825 XCAR (ofd_locative) = Qnil;
|
|
|
1826
|
|
|
1827 /* Close ifd */
|
|
|
1828 unbind_to (speccount, Qnil);
|
|
|
1829 }
|
|
|
1830
|
|
|
1831 UNGCPRO;
|
|
|
1832 return Qnil;
|
|
|
1833 }
|
|
|
1834
|
|
|
1835 DEFUN ("make-directory-internal", Fmake_directory_internal, 1, 1, 0, /*
|
|
|
1836 Create a directory. One argument, a file name string.
|
|
|
1837 */
|
|
|
1838 (dirname_))
|
|
|
1839 {
|
|
|
1840 /* This function can GC. GC checked 1997.04.06. */
|
|
|
1841 char dir [MAXPATHLEN];
|
|
|
1842 Lisp_Object handler;
|
|
|
1843 struct gcpro gcpro1;
|
|
|
1844
|
|
|
1845 CHECK_STRING (dirname_);
|
|
|
1846 dirname_ = Fexpand_file_name (dirname_, Qnil);
|
|
|
1847
|
|
|
1848 GCPRO1 (dirname_);
|
|
|
1849 handler = Ffind_file_name_handler (dirname_, Qmake_directory_internal);
|
|
|
1850 UNGCPRO;
|
|
|
1851 if (!NILP (handler))
|
|
|
1852 return (call2 (handler, Qmake_directory_internal, dirname_));
|
|
|
1853
|
|
|
1854 if (XSTRING_LENGTH (dirname_) > (Bytecount) (sizeof (dir) - 1))
|
|
|
1855 {
|
|
|
1856 return Fsignal (Qfile_error,
|
|
|
1857 list3 (build_translated_string ("Creating directory"),
|
|
442
|
1858 build_translated_string ("pathname too long"),
|
|
428
|
1859 dirname_));
|
|
|
1860 }
|
|
|
1861 strncpy (dir, (char *) XSTRING_DATA (dirname_),
|
|
|
1862 XSTRING_LENGTH (dirname_) + 1);
|
|
|
1863
|
|
|
1864 if (dir [XSTRING_LENGTH (dirname_) - 1] == '/')
|
|
|
1865 dir [XSTRING_LENGTH (dirname_) - 1] = 0;
|
|
|
1866
|
|
|
1867 if (mkdir (dir, 0777) != 0)
|
|
|
1868 report_file_error ("Creating directory", list1 (dirname_));
|
|
|
1869
|
|
|
1870 return Qnil;
|
|
|
1871 }
|
|
|
1872
|
|
|
1873 DEFUN ("delete-directory", Fdelete_directory, 1, 1, "FDelete directory: ", /*
|
|
|
1874 Delete a directory. One argument, a file name or directory name string.
|
|
|
1875 */
|
|
|
1876 (dirname_))
|
|
|
1877 {
|
|
|
1878 /* This function can GC. GC checked 1997.04.06. */
|
|
|
1879 Lisp_Object handler;
|
|
|
1880 struct gcpro gcpro1;
|
|
|
1881
|
|
|
1882 CHECK_STRING (dirname_);
|
|
|
1883
|
|
|
1884 GCPRO1 (dirname_);
|
|
|
1885 dirname_ = Fexpand_file_name (dirname_, Qnil);
|
|
|
1886 dirname_ = Fdirectory_file_name (dirname_);
|
|
|
1887
|
|
|
1888 handler = Ffind_file_name_handler (dirname_, Qdelete_directory);
|
|
|
1889 UNGCPRO;
|
|
|
1890 if (!NILP (handler))
|
|
|
1891 return (call2 (handler, Qdelete_directory, dirname_));
|
|
|
1892
|
|
|
1893 if (rmdir ((char *) XSTRING_DATA (dirname_)) != 0)
|
|
|
1894 report_file_error ("Removing directory", list1 (dirname_));
|
|
|
1895
|
|
|
1896 return Qnil;
|
|
|
1897 }
|
|
|
1898
|
|
|
1899 DEFUN ("delete-file", Fdelete_file, 1, 1, "fDelete file: ", /*
|
|
442
|
1900 Delete the file named FILENAME (a string).
|
|
|
1901 If FILENAME has multiple names, it continues to exist with the other names.
|
|
428
|
1902 */
|
|
|
1903 (filename))
|
|
|
1904 {
|
|
|
1905 /* This function can GC. GC checked 1997.04.06. */
|
|
|
1906 Lisp_Object handler;
|
|
|
1907 struct gcpro gcpro1;
|
|
|
1908
|
|
|
1909 CHECK_STRING (filename);
|
|
|
1910 filename = Fexpand_file_name (filename, Qnil);
|
|
|
1911
|
|
|
1912 GCPRO1 (filename);
|
|
|
1913 handler = Ffind_file_name_handler (filename, Qdelete_file);
|
|
|
1914 UNGCPRO;
|
|
|
1915 if (!NILP (handler))
|
|
|
1916 return call2 (handler, Qdelete_file, filename);
|
|
|
1917
|
|
|
1918 if (0 > unlink ((char *) XSTRING_DATA (filename)))
|
|
|
1919 report_file_error ("Removing old name", list1 (filename));
|
|
|
1920 return Qnil;
|
|
|
1921 }
|
|
|
1922
|
|
|
1923 static Lisp_Object
|
|
|
1924 internal_delete_file_1 (Lisp_Object ignore, Lisp_Object ignore2)
|
|
|
1925 {
|
|
|
1926 return Qt;
|
|
|
1927 }
|
|
|
1928
|
|
|
1929 /* Delete file FILENAME, returning 1 if successful and 0 if failed. */
|
|
|
1930
|
|
|
1931 int
|
|
|
1932 internal_delete_file (Lisp_Object filename)
|
|
|
1933 {
|
|
|
1934 /* This function can GC. GC checked 1997.04.06. */
|
|
|
1935 return NILP (condition_case_1 (Qt, Fdelete_file, filename,
|
|
|
1936 internal_delete_file_1, Qnil));
|
|
|
1937 }
|
|
|
1938
|
|
|
1939 DEFUN ("rename-file", Frename_file, 2, 3,
|
|
|
1940 "fRename file: \nFRename %s to file: \np", /*
|
|
444
|
1941 Rename FILENAME as NEWNAME. Both args must be strings.
|
|
|
1942 If file has names other than FILENAME, it continues to have those names.
|
|
428
|
1943 Signals a `file-already-exists' error if a file NEWNAME already exists
|
|
|
1944 unless optional third argument OK-IF-ALREADY-EXISTS is non-nil.
|
|
|
1945 A number as third arg means request confirmation if NEWNAME already exists.
|
|
|
1946 This is what happens in interactive use with M-x.
|
|
|
1947 */
|
|
|
1948 (filename, newname, ok_if_already_exists))
|
|
|
1949 {
|
|
|
1950 /* This function can GC. GC checked 1997.04.06. */
|
|
|
1951 Lisp_Object handler;
|
|
|
1952 struct gcpro gcpro1, gcpro2;
|
|
|
1953
|
|
|
1954 GCPRO2 (filename, newname);
|
|
|
1955 CHECK_STRING (filename);
|
|
|
1956 CHECK_STRING (newname);
|
|
|
1957 filename = Fexpand_file_name (filename, Qnil);
|
|
|
1958 newname = Fexpand_file_name (newname, Qnil);
|
|
|
1959
|
|
|
1960 /* If the file name has special constructs in it,
|
|
|
1961 call the corresponding file handler. */
|
|
|
1962 handler = Ffind_file_name_handler (filename, Qrename_file);
|
|
|
1963 if (NILP (handler))
|
|
|
1964 handler = Ffind_file_name_handler (newname, Qrename_file);
|
|
|
1965 if (!NILP (handler))
|
|
|
1966 {
|
|
|
1967 UNGCPRO;
|
|
|
1968 return call4 (handler, Qrename_file,
|
|
|
1969 filename, newname, ok_if_already_exists);
|
|
|
1970 }
|
|
|
1971
|
|
|
1972 /* When second argument is a directory, rename the file into it.
|
|
|
1973 (rename-file "foo" "bar/") == (rename-file "foo" "bar/foo")
|
|
|
1974 */
|
|
|
1975 if (!NILP (Ffile_directory_p (newname)))
|
|
|
1976 {
|
|
|
1977 Lisp_Object args[3];
|
|
|
1978 struct gcpro ngcpro1;
|
|
|
1979 int i = 1;
|
|
|
1980
|
|
|
1981 args[0] = newname;
|
|
|
1982 args[1] = Qnil; args[2] = Qnil;
|
|
|
1983 NGCPRO1 (*args);
|
|
|
1984 ngcpro1.nvars = 3;
|
|
|
1985 if (XSTRING_BYTE (newname, XSTRING_LENGTH (newname) - 1) != '/')
|
|
|
1986 args[i++] = build_string ("/");
|
|
|
1987 args[i++] = Ffile_name_nondirectory (filename);
|
|
|
1988 newname = Fconcat (i, args);
|
|
|
1989 NUNGCPRO;
|
|
|
1990 }
|
|
|
1991
|
|
|
1992 if (NILP (ok_if_already_exists)
|
|
|
1993 || INTP (ok_if_already_exists))
|
|
|
1994 barf_or_query_if_file_exists (newname, "rename to it",
|
|
|
1995 INTP (ok_if_already_exists), 0);
|
|
|
1996
|
|
|
1997 /* Syncing with FSF 19.34.6 note: FSF does not have conditional code for
|
|
442
|
1998 WIN32_NATIVE here; I've removed it. --marcpa */
|
|
|
1999
|
|
|
2000 /* We have configure check for rename() and emulate using
|
|
|
2001 link()/unlink() if necessary. */
|
|
428
|
2002 if (0 > rename ((char *) XSTRING_DATA (filename),
|
|
|
2003 (char *) XSTRING_DATA (newname)))
|
|
|
2004 {
|
|
|
2005 if (errno == EXDEV)
|
|
|
2006 {
|
|
|
2007 Fcopy_file (filename, newname,
|
|
|
2008 /* We have already prompted if it was an integer,
|
|
|
2009 so don't have copy-file prompt again. */
|
|
|
2010 (NILP (ok_if_already_exists) ? Qnil : Qt),
|
|
|
2011 Qt);
|
|
|
2012 Fdelete_file (filename);
|
|
|
2013 }
|
|
|
2014 else
|
|
|
2015 {
|
|
|
2016 report_file_error ("Renaming", list2 (filename, newname));
|
|
|
2017 }
|
|
|
2018 }
|
|
|
2019 UNGCPRO;
|
|
|
2020 return Qnil;
|
|
|
2021 }
|
|
|
2022
|
|
|
2023 DEFUN ("add-name-to-file", Fadd_name_to_file, 2, 3,
|
|
|
2024 "fAdd name to file: \nFName to add to %s: \np", /*
|
|
444
|
2025 Give FILENAME additional name NEWNAME. Both args must be strings.
|
|
428
|
2026 Signals a `file-already-exists' error if a file NEWNAME already exists
|
|
|
2027 unless optional third argument OK-IF-ALREADY-EXISTS is non-nil.
|
|
|
2028 A number as third arg means request confirmation if NEWNAME already exists.
|
|
|
2029 This is what happens in interactive use with M-x.
|
|
|
2030 */
|
|
|
2031 (filename, newname, ok_if_already_exists))
|
|
|
2032 {
|
|
|
2033 /* This function can GC. GC checked 1997.04.06. */
|
|
|
2034 Lisp_Object handler;
|
|
|
2035 struct gcpro gcpro1, gcpro2;
|
|
|
2036
|
|
|
2037 GCPRO2 (filename, newname);
|
|
|
2038 CHECK_STRING (filename);
|
|
|
2039 CHECK_STRING (newname);
|
|
|
2040 filename = Fexpand_file_name (filename, Qnil);
|
|
|
2041 newname = Fexpand_file_name (newname, Qnil);
|
|
|
2042
|
|
|
2043 /* If the file name has special constructs in it,
|
|
|
2044 call the corresponding file handler. */
|
|
|
2045 handler = Ffind_file_name_handler (filename, Qadd_name_to_file);
|
|
|
2046 if (!NILP (handler))
|
|
|
2047 RETURN_UNGCPRO (call4 (handler, Qadd_name_to_file, filename,
|
|
|
2048 newname, ok_if_already_exists));
|
|
|
2049
|
|
|
2050 /* If the new name has special constructs in it,
|
|
|
2051 call the corresponding file handler. */
|
|
|
2052 handler = Ffind_file_name_handler (newname, Qadd_name_to_file);
|
|
|
2053 if (!NILP (handler))
|
|
|
2054 RETURN_UNGCPRO (call4 (handler, Qadd_name_to_file, filename,
|
|
|
2055 newname, ok_if_already_exists));
|
|
|
2056
|
|
|
2057 if (NILP (ok_if_already_exists)
|
|
|
2058 || INTP (ok_if_already_exists))
|
|
|
2059 barf_or_query_if_file_exists (newname, "make it a new name",
|
|
|
2060 INTP (ok_if_already_exists), 0);
|
|
|
2061 /* Syncing with FSF 19.34.6 note: FSF does not report a file error
|
|
|
2062 on NT here. --marcpa */
|
|
|
2063 /* But FSF #defines link as sys_link which is supplied in nt.c. We can't do
|
|
|
2064 that because sysfile.h defines sys_link depending on ENCAPSULATE_LINK.
|
|
|
2065 Reverted to previous behavior pending a working fix. (jhar) */
|
|
442
|
2066 #if defined(WIN32_NATIVE)
|
|
428
|
2067 /* Windows does not support this operation. */
|
|
|
2068 report_file_error ("Adding new name", Flist (2, &filename));
|
|
442
|
2069 #else /* not defined(WIN32_NATIVE) */
|
|
428
|
2070
|
|
|
2071 unlink ((char *) XSTRING_DATA (newname));
|
|
|
2072 if (0 > link ((char *) XSTRING_DATA (filename),
|
|
|
2073 (char *) XSTRING_DATA (newname)))
|
|
|
2074 {
|
|
|
2075 report_file_error ("Adding new name",
|
|
|
2076 list2 (filename, newname));
|
|
|
2077 }
|
|
442
|
2078 #endif /* defined(WIN32_NATIVE) */
|
|
428
|
2079
|
|
|
2080 UNGCPRO;
|
|
|
2081 return Qnil;
|
|
|
2082 }
|
|
|
2083
|
|
|
2084 DEFUN ("make-symbolic-link", Fmake_symbolic_link, 2, 3,
|
|
|
2085 "FMake symbolic link to file: \nFMake symbolic link to file %s: \np", /*
|
|
|
2086 Make a symbolic link to FILENAME, named LINKNAME. Both args strings.
|
|
|
2087 Signals a `file-already-exists' error if a file LINKNAME already exists
|
|
|
2088 unless optional third argument OK-IF-ALREADY-EXISTS is non-nil.
|
|
|
2089 A number as third arg means request confirmation if LINKNAME already exists.
|
|
|
2090 This happens for interactive use with M-x.
|
|
|
2091 */
|
|
|
2092 (filename, linkname, ok_if_already_exists))
|
|
|
2093 {
|
|
|
2094 /* This function can GC. GC checked 1997.06.04. */
|
|
442
|
2095 /* XEmacs change: run handlers even if local machine doesn't have symlinks */
|
|
428
|
2096 Lisp_Object handler;
|
|
|
2097 struct gcpro gcpro1, gcpro2;
|
|
|
2098
|
|
|
2099 GCPRO2 (filename, linkname);
|
|
|
2100 CHECK_STRING (filename);
|
|
|
2101 CHECK_STRING (linkname);
|
|
|
2102 /* If the link target has a ~, we must expand it to get
|
|
|
2103 a truly valid file name. Otherwise, do not expand;
|
|
|
2104 we want to permit links to relative file names. */
|
|
|
2105 if (XSTRING_BYTE (filename, 0) == '~')
|
|
|
2106 filename = Fexpand_file_name (filename, Qnil);
|
|
|
2107 linkname = Fexpand_file_name (linkname, Qnil);
|
|
|
2108
|
|
|
2109 /* If the file name has special constructs in it,
|
|
|
2110 call the corresponding file handler. */
|
|
|
2111 handler = Ffind_file_name_handler (filename, Qmake_symbolic_link);
|
|
|
2112 if (!NILP (handler))
|
|
|
2113 RETURN_UNGCPRO (call4 (handler, Qmake_symbolic_link, filename, linkname,
|
|
|
2114 ok_if_already_exists));
|
|
|
2115
|
|
|
2116 /* If the new link name has special constructs in it,
|
|
|
2117 call the corresponding file handler. */
|
|
|
2118 handler = Ffind_file_name_handler (linkname, Qmake_symbolic_link);
|
|
|
2119 if (!NILP (handler))
|
|
|
2120 RETURN_UNGCPRO (call4 (handler, Qmake_symbolic_link, filename,
|
|
|
2121 linkname, ok_if_already_exists));
|
|
|
2122
|
|
442
|
2123 #ifdef S_IFLNK
|
|
428
|
2124 if (NILP (ok_if_already_exists)
|
|
|
2125 || INTP (ok_if_already_exists))
|
|
|
2126 barf_or_query_if_file_exists (linkname, "make it a link",
|
|
|
2127 INTP (ok_if_already_exists), 0);
|
|
|
2128
|
|
|
2129 unlink ((char *) XSTRING_DATA (linkname));
|
|
|
2130 if (0 > symlink ((char *) XSTRING_DATA (filename),
|
|
|
2131 (char *) XSTRING_DATA (linkname)))
|
|
|
2132 {
|
|
|
2133 report_file_error ("Making symbolic link",
|
|
|
2134 list2 (filename, linkname));
|
|
|
2135 }
|
|
442
|
2136 #endif /* S_IFLNK */
|
|
|
2137
|
|
428
|
2138 UNGCPRO;
|
|
|
2139 return Qnil;
|
|
|
2140 }
|
|
|
2141
|
|
|
2142 #ifdef HPUX_NET
|
|
|
2143
|
|
|
2144 DEFUN ("sysnetunam", Fsysnetunam, 2, 2, 0, /*
|
|
|
2145 Open a network connection to PATH using LOGIN as the login string.
|
|
|
2146 */
|
|
|
2147 (path, login))
|
|
|
2148 {
|
|
|
2149 int netresult;
|
|
440
|
2150 const char *path_ext;
|
|
|
2151 const char *login_ext;
|
|
428
|
2152
|
|
|
2153 CHECK_STRING (path);
|
|
|
2154 CHECK_STRING (login);
|
|
|
2155
|
|
|
2156 /* netunam, being a strange-o system call only used once, is not
|
|
|
2157 encapsulated. */
|
|
440
|
2158
|
|
442
|
2159 LISP_STRING_TO_EXTERNAL (path, path_ext, Qfile_name);
|
|
|
2160 LISP_STRING_TO_EXTERNAL (login, login_ext, Qnative);
|
|
440
|
2161
|
|
|
2162 netresult = netunam (path_ext, login_ext);
|
|
|
2163
|
|
|
2164 return netresult == -1 ? Qnil : Qt;
|
|
428
|
2165 }
|
|
|
2166 #endif /* HPUX_NET */
|
|
|
2167
|
|
|
2168 DEFUN ("file-name-absolute-p", Ffile_name_absolute_p, 1, 1, 0, /*
|
|
|
2169 Return t if file FILENAME specifies an absolute path name.
|
|
|
2170 On Unix, this is a name starting with a `/' or a `~'.
|
|
|
2171 */
|
|
|
2172 (filename))
|
|
|
2173 {
|
|
|
2174 /* This function does not GC */
|
|
|
2175 Bufbyte *ptr;
|
|
|
2176
|
|
|
2177 CHECK_STRING (filename);
|
|
|
2178 ptr = XSTRING_DATA (filename);
|
|
|
2179 return (IS_DIRECTORY_SEP (*ptr) || *ptr == '~'
|
|
442
|
2180 #ifdef WIN32_NATIVE
|
|
428
|
2181 || (IS_DRIVE (*ptr) && ptr[1] == ':' && IS_DIRECTORY_SEP (ptr[2]))
|
|
|
2182 #endif
|
|
|
2183 ) ? Qt : Qnil;
|
|
|
2184 }
|
|
|
2185
|
|
|
2186 /* Return nonzero if file FILENAME exists and can be executed. */
|
|
|
2187
|
|
|
2188 static int
|
|
|
2189 check_executable (char *filename)
|
|
|
2190 {
|
|
442
|
2191 #ifdef WIN32_NATIVE
|
|
428
|
2192 struct stat st;
|
|
442
|
2193 if (xemacs_stat (filename, &st) < 0)
|
|
428
|
2194 return 0;
|
|
|
2195 return ((st.st_mode & S_IEXEC) != 0);
|
|
442
|
2196 #else /* not WIN32_NATIVE */
|
|
428
|
2197 #ifdef HAVE_EACCESS
|
|
442
|
2198 return eaccess (filename, X_OK) >= 0;
|
|
428
|
2199 #else
|
|
|
2200 /* Access isn't quite right because it uses the real uid
|
|
|
2201 and we really want to test with the effective uid.
|
|
|
2202 But Unix doesn't give us a right way to do it. */
|
|
442
|
2203 return access (filename, X_OK) >= 0;
|
|
428
|
2204 #endif /* HAVE_EACCESS */
|
|
442
|
2205 #endif /* not WIN32_NATIVE */
|
|
428
|
2206 }
|
|
|
2207
|
|
|
2208 /* Return nonzero if file FILENAME exists and can be written. */
|
|
|
2209
|
|
|
2210 static int
|
|
442
|
2211 check_writable (const char *filename)
|
|
428
|
2212 {
|
|
|
2213 #ifdef HAVE_EACCESS
|
|
442
|
2214 return (eaccess (filename, W_OK) >= 0);
|
|
428
|
2215 #else
|
|
|
2216 /* Access isn't quite right because it uses the real uid
|
|
|
2217 and we really want to test with the effective uid.
|
|
|
2218 But Unix doesn't give us a right way to do it.
|
|
|
2219 Opening with O_WRONLY could work for an ordinary file,
|
|
|
2220 but would lose for directories. */
|
|
442
|
2221 return (access (filename, W_OK) >= 0);
|
|
428
|
2222 #endif
|
|
|
2223 }
|
|
|
2224
|
|
|
2225 DEFUN ("file-exists-p", Ffile_exists_p, 1, 1, 0, /*
|
|
|
2226 Return t if file FILENAME exists. (This does not mean you can read it.)
|
|
|
2227 See also `file-readable-p' and `file-attributes'.
|
|
|
2228 */
|
|
|
2229 (filename))
|
|
|
2230 {
|
|
442
|
2231 /* This function can call lisp; GC checked 2000-07-11 ben */
|
|
428
|
2232 Lisp_Object abspath;
|
|
|
2233 Lisp_Object handler;
|
|
|
2234 struct stat statbuf;
|
|
|
2235 struct gcpro gcpro1;
|
|
|
2236
|
|
|
2237 CHECK_STRING (filename);
|
|
|
2238 abspath = Fexpand_file_name (filename, Qnil);
|
|
|
2239
|
|
|
2240 /* If the file name has special constructs in it,
|
|
|
2241 call the corresponding file handler. */
|
|
|
2242 GCPRO1 (abspath);
|
|
|
2243 handler = Ffind_file_name_handler (abspath, Qfile_exists_p);
|
|
|
2244 UNGCPRO;
|
|
|
2245 if (!NILP (handler))
|
|
|
2246 return call2 (handler, Qfile_exists_p, abspath);
|
|
|
2247
|
|
442
|
2248 return xemacs_stat ((char *) XSTRING_DATA (abspath), &statbuf) >= 0 ? Qt : Qnil;
|
|
428
|
2249 }
|
|
|
2250
|
|
|
2251 DEFUN ("file-executable-p", Ffile_executable_p, 1, 1, 0, /*
|
|
|
2252 Return t if FILENAME can be executed by you.
|
|
|
2253 For a directory, this means you can access files in that directory.
|
|
|
2254 */
|
|
|
2255 (filename))
|
|
|
2256
|
|
|
2257 {
|
|
442
|
2258 /* This function can GC. GC checked 07-11-2000 ben. */
|
|
428
|
2259 Lisp_Object abspath;
|
|
|
2260 Lisp_Object handler;
|
|
|
2261 struct gcpro gcpro1;
|
|
|
2262
|
|
|
2263 CHECK_STRING (filename);
|
|
|
2264 abspath = Fexpand_file_name (filename, Qnil);
|
|
|
2265
|
|
|
2266 /* If the file name has special constructs in it,
|
|
|
2267 call the corresponding file handler. */
|
|
|
2268 GCPRO1 (abspath);
|
|
|
2269 handler = Ffind_file_name_handler (abspath, Qfile_executable_p);
|
|
|
2270 UNGCPRO;
|
|
|
2271 if (!NILP (handler))
|
|
|
2272 return call2 (handler, Qfile_executable_p, abspath);
|
|
|
2273
|
|
|
2274 return check_executable ((char *) XSTRING_DATA (abspath)) ? Qt : Qnil;
|
|
|
2275 }
|
|
|
2276
|
|
|
2277 DEFUN ("file-readable-p", Ffile_readable_p, 1, 1, 0, /*
|
|
|
2278 Return t if file FILENAME exists and you can read it.
|
|
|
2279 See also `file-exists-p' and `file-attributes'.
|
|
|
2280 */
|
|
|
2281 (filename))
|
|
|
2282 {
|
|
|
2283 /* This function can GC */
|
|
|
2284 Lisp_Object abspath = Qnil;
|
|
|
2285 Lisp_Object handler;
|
|
|
2286 struct gcpro gcpro1;
|
|
|
2287 GCPRO1 (abspath);
|
|
|
2288
|
|
|
2289 CHECK_STRING (filename);
|
|
|
2290 abspath = Fexpand_file_name (filename, Qnil);
|
|
|
2291
|
|
|
2292 /* If the file name has special constructs in it,
|
|
|
2293 call the corresponding file handler. */
|
|
|
2294 handler = Ffind_file_name_handler (abspath, Qfile_readable_p);
|
|
|
2295 if (!NILP (handler))
|
|
|
2296 RETURN_UNGCPRO (call2 (handler, Qfile_readable_p, abspath));
|
|
|
2297
|
|
442
|
2298 #if defined(WIN32_NATIVE) || defined(CYGWIN)
|
|
428
|
2299 /* Under MS-DOS and Windows, open does not work for directories. */
|
|
|
2300 UNGCPRO;
|
|
|
2301 if (access (XSTRING_DATA (abspath), 0) == 0)
|
|
|
2302 return Qt;
|
|
|
2303 else
|
|
|
2304 return Qnil;
|
|
442
|
2305 #else /* not WIN32_NATIVE */
|
|
428
|
2306 {
|
|
|
2307 int desc = interruptible_open ((char *) XSTRING_DATA (abspath), O_RDONLY | OPEN_BINARY, 0);
|
|
|
2308 UNGCPRO;
|
|
|
2309 if (desc < 0)
|
|
|
2310 return Qnil;
|
|
|
2311 close (desc);
|
|
|
2312 return Qt;
|
|
|
2313 }
|
|
442
|
2314 #endif /* not WIN32_NATIVE */
|
|
428
|
2315 }
|
|
|
2316
|
|
|
2317 /* Having this before file-symlink-p mysteriously caused it to be forgotten
|
|
|
2318 on the RT/PC. */
|
|
|
2319 DEFUN ("file-writable-p", Ffile_writable_p, 1, 1, 0, /*
|
|
|
2320 Return t if file FILENAME can be written or created by you.
|
|
|
2321 */
|
|
|
2322 (filename))
|
|
|
2323 {
|
|
|
2324 /* This function can GC. GC checked 1997.04.10. */
|
|
|
2325 Lisp_Object abspath, dir;
|
|
|
2326 Lisp_Object handler;
|
|
|
2327 struct stat statbuf;
|
|
|
2328 struct gcpro gcpro1;
|
|
|
2329
|
|
|
2330 CHECK_STRING (filename);
|
|
|
2331 abspath = Fexpand_file_name (filename, Qnil);
|
|
|
2332
|
|
|
2333 /* If the file name has special constructs in it,
|
|
|
2334 call the corresponding file handler. */
|
|
|
2335 GCPRO1 (abspath);
|
|
|
2336 handler = Ffind_file_name_handler (abspath, Qfile_writable_p);
|
|
|
2337 UNGCPRO;
|
|
|
2338 if (!NILP (handler))
|
|
|
2339 return call2 (handler, Qfile_writable_p, abspath);
|
|
|
2340
|
|
442
|
2341 if (xemacs_stat ((char *) XSTRING_DATA (abspath), &statbuf) >= 0)
|
|
428
|
2342 return (check_writable ((char *) XSTRING_DATA (abspath))
|
|
|
2343 ? Qt : Qnil);
|
|
|
2344
|
|
|
2345
|
|
|
2346 GCPRO1 (abspath);
|
|
|
2347 dir = Ffile_name_directory (abspath);
|
|
|
2348 UNGCPRO;
|
|
|
2349 return (check_writable (!NILP (dir) ? (char *) XSTRING_DATA (dir)
|
|
|
2350 : "")
|
|
|
2351 ? Qt : Qnil);
|
|
|
2352 }
|
|
|
2353
|
|
|
2354 DEFUN ("file-symlink-p", Ffile_symlink_p, 1, 1, 0, /*
|
|
|
2355 Return non-nil if file FILENAME is the name of a symbolic link.
|
|
|
2356 The value is the name of the file to which it is linked.
|
|
|
2357 Otherwise returns nil.
|
|
|
2358 */
|
|
|
2359 (filename))
|
|
|
2360 {
|
|
|
2361 /* This function can GC. GC checked 1997.04.10. */
|
|
442
|
2362 /* XEmacs change: run handlers even if local machine doesn't have symlinks */
|
|
428
|
2363 #ifdef S_IFLNK
|
|
|
2364 char *buf;
|
|
|
2365 int bufsize;
|
|
|
2366 int valsize;
|
|
|
2367 Lisp_Object val;
|
|
442
|
2368 #endif
|
|
428
|
2369 Lisp_Object handler;
|
|
|
2370 struct gcpro gcpro1;
|
|
|
2371
|
|
|
2372 CHECK_STRING (filename);
|
|
|
2373 filename = Fexpand_file_name (filename, Qnil);
|
|
|
2374
|
|
|
2375 /* If the file name has special constructs in it,
|
|
|
2376 call the corresponding file handler. */
|
|
|
2377 GCPRO1 (filename);
|
|
|
2378 handler = Ffind_file_name_handler (filename, Qfile_symlink_p);
|
|
|
2379 UNGCPRO;
|
|
|
2380 if (!NILP (handler))
|
|
|
2381 return call2 (handler, Qfile_symlink_p, filename);
|
|
|
2382
|
|
442
|
2383 #ifdef S_IFLNK
|
|
428
|
2384 bufsize = 100;
|
|
|
2385 while (1)
|
|
|
2386 {
|
|
|
2387 buf = xnew_array_and_zero (char, bufsize);
|
|
|
2388 valsize = readlink ((char *) XSTRING_DATA (filename),
|
|
|
2389 buf, bufsize);
|
|
|
2390 if (valsize < bufsize) break;
|
|
|
2391 /* Buffer was not long enough */
|
|
|
2392 xfree (buf);
|
|
|
2393 bufsize *= 2;
|
|
|
2394 }
|
|
|
2395 if (valsize == -1)
|
|
|
2396 {
|
|
|
2397 xfree (buf);
|
|
|
2398 return Qnil;
|
|
|
2399 }
|
|
|
2400 val = make_string ((Bufbyte *) buf, valsize);
|
|
|
2401 xfree (buf);
|
|
|
2402 return val;
|
|
|
2403 #else /* not S_IFLNK */
|
|
|
2404 return Qnil;
|
|
|
2405 #endif /* not S_IFLNK */
|
|
|
2406 }
|
|
|
2407
|
|
|
2408 DEFUN ("file-directory-p", Ffile_directory_p, 1, 1, 0, /*
|
|
|
2409 Return t if file FILENAME is the name of a directory as a file.
|
|
|
2410 A directory name spec may be given instead; then the value is t
|
|
|
2411 if the directory so specified exists and really is a directory.
|
|
|
2412 */
|
|
|
2413 (filename))
|
|
|
2414 {
|
|
|
2415 /* This function can GC. GC checked 1997.04.10. */
|
|
|
2416 Lisp_Object abspath;
|
|
|
2417 struct stat st;
|
|
|
2418 Lisp_Object handler;
|
|
|
2419 struct gcpro gcpro1;
|
|
|
2420
|
|
|
2421 GCPRO1 (current_buffer->directory);
|
|
|
2422 abspath = expand_and_dir_to_file (filename,
|
|
|
2423 current_buffer->directory);
|
|
|
2424 UNGCPRO;
|
|
|
2425
|
|
|
2426 /* If the file name has special constructs in it,
|
|
|
2427 call the corresponding file handler. */
|
|
|
2428 GCPRO1 (abspath);
|
|
|
2429 handler = Ffind_file_name_handler (abspath, Qfile_directory_p);
|
|
|
2430 UNGCPRO;
|
|
|
2431 if (!NILP (handler))
|
|
|
2432 return call2 (handler, Qfile_directory_p, abspath);
|
|
|
2433
|
|
442
|
2434 if (xemacs_stat ((char *) XSTRING_DATA (abspath), &st) < 0)
|
|
428
|
2435 return Qnil;
|
|
|
2436 return (st.st_mode & S_IFMT) == S_IFDIR ? Qt : Qnil;
|
|
|
2437 }
|
|
|
2438
|
|
|
2439 DEFUN ("file-accessible-directory-p", Ffile_accessible_directory_p, 1, 1, 0, /*
|
|
|
2440 Return t if file FILENAME is the name of a directory as a file,
|
|
|
2441 and files in that directory can be opened by you. In order to use a
|
|
|
2442 directory as a buffer's current directory, this predicate must return true.
|
|
|
2443 A directory name spec may be given instead; then the value is t
|
|
|
2444 if the directory so specified exists and really is a readable and
|
|
|
2445 searchable directory.
|
|
|
2446 */
|
|
|
2447 (filename))
|
|
|
2448 {
|
|
|
2449 /* This function can GC. GC checked 1997.04.10. */
|
|
|
2450 Lisp_Object handler;
|
|
|
2451
|
|
|
2452 /* If the file name has special constructs in it,
|
|
|
2453 call the corresponding file handler. */
|
|
|
2454 handler = Ffind_file_name_handler (filename, Qfile_accessible_directory_p);
|
|
|
2455 if (!NILP (handler))
|
|
|
2456 return call2 (handler, Qfile_accessible_directory_p,
|
|
|
2457 filename);
|
|
|
2458
|
|
442
|
2459 #if !defined(WIN32_NATIVE)
|
|
428
|
2460 if (NILP (Ffile_directory_p (filename)))
|
|
|
2461 return (Qnil);
|
|
|
2462 else
|
|
|
2463 return Ffile_executable_p (filename);
|
|
|
2464 #else
|
|
|
2465 {
|
|
|
2466 int tem;
|
|
|
2467 struct gcpro gcpro1;
|
|
|
2468 /* It's an unlikely combination, but yes we really do need to gcpro:
|
|
|
2469 Suppose that file-accessible-directory-p has no handler, but
|
|
|
2470 file-directory-p does have a handler; this handler causes a GC which
|
|
|
2471 relocates the string in `filename'; and finally file-directory-p
|
|
|
2472 returns non-nil. Then we would end up passing a garbaged string
|
|
|
2473 to file-executable-p. */
|
|
|
2474 GCPRO1 (filename);
|
|
|
2475 tem = (NILP (Ffile_directory_p (filename))
|
|
|
2476 || NILP (Ffile_executable_p (filename)));
|
|
|
2477 UNGCPRO;
|
|
|
2478 return tem ? Qnil : Qt;
|
|
|
2479 }
|
|
442
|
2480 #endif /* !defined(WIN32_NATIVE) */
|
|
428
|
2481 }
|
|
|
2482
|
|
|
2483 DEFUN ("file-regular-p", Ffile_regular_p, 1, 1, 0, /*
|
|
|
2484 Return t if file FILENAME is the name of a regular file.
|
|
|
2485 This is the sort of file that holds an ordinary stream of data bytes.
|
|
|
2486 */
|
|
|
2487 (filename))
|
|
|
2488 {
|
|
|
2489 /* This function can GC. GC checked 1997.04.10. */
|
|
|
2490 Lisp_Object abspath;
|
|
|
2491 struct stat st;
|
|
|
2492 Lisp_Object handler;
|
|
|
2493 struct gcpro gcpro1;
|
|
|
2494
|
|
|
2495 GCPRO1 (current_buffer->directory);
|
|
|
2496 abspath = expand_and_dir_to_file (filename, current_buffer->directory);
|
|
|
2497 UNGCPRO;
|
|
|
2498
|
|
|
2499 /* If the file name has special constructs in it,
|
|
|
2500 call the corresponding file handler. */
|
|
|
2501 GCPRO1 (abspath);
|
|
|
2502 handler = Ffind_file_name_handler (abspath, Qfile_regular_p);
|
|
|
2503 UNGCPRO;
|
|
|
2504 if (!NILP (handler))
|
|
|
2505 return call2 (handler, Qfile_regular_p, abspath);
|
|
|
2506
|
|
442
|
2507 if (xemacs_stat ((char *) XSTRING_DATA (abspath), &st) < 0)
|
|
428
|
2508 return Qnil;
|
|
|
2509 return (st.st_mode & S_IFMT) == S_IFREG ? Qt : Qnil;
|
|
|
2510 }
|
|
|
2511
|
|
|
2512 DEFUN ("file-modes", Ffile_modes, 1, 1, 0, /*
|
|
444
|
2513 Return mode bits of file named FILENAME, as an integer.
|
|
428
|
2514 */
|
|
|
2515 (filename))
|
|
|
2516 {
|
|
|
2517 /* This function can GC. GC checked 1997.04.10. */
|
|
|
2518 Lisp_Object abspath;
|
|
|
2519 struct stat st;
|
|
|
2520 Lisp_Object handler;
|
|
|
2521 struct gcpro gcpro1;
|
|
|
2522
|
|
|
2523 GCPRO1 (current_buffer->directory);
|
|
|
2524 abspath = expand_and_dir_to_file (filename,
|
|
|
2525 current_buffer->directory);
|
|
|
2526 UNGCPRO;
|
|
|
2527
|
|
|
2528 /* If the file name has special constructs in it,
|
|
|
2529 call the corresponding file handler. */
|
|
|
2530 GCPRO1 (abspath);
|
|
|
2531 handler = Ffind_file_name_handler (abspath, Qfile_modes);
|
|
|
2532 UNGCPRO;
|
|
|
2533 if (!NILP (handler))
|
|
|
2534 return call2 (handler, Qfile_modes, abspath);
|
|
|
2535
|
|
442
|
2536 if (xemacs_stat ((char *) XSTRING_DATA (abspath), &st) < 0)
|
|
428
|
2537 return Qnil;
|
|
|
2538 /* Syncing with FSF 19.34.6 note: not in FSF, #if 0'ed out here. */
|
|
|
2539 #if 0
|
|
442
|
2540 #ifdef WIN32_NATIVE
|
|
428
|
2541 if (check_executable (XSTRING_DATA (abspath)))
|
|
|
2542 st.st_mode |= S_IEXEC;
|
|
442
|
2543 #endif /* WIN32_NATIVE */
|
|
428
|
2544 #endif /* 0 */
|
|
|
2545
|
|
|
2546 return make_int (st.st_mode & 07777);
|
|
|
2547 }
|
|
|
2548
|
|
|
2549 DEFUN ("set-file-modes", Fset_file_modes, 2, 2, 0, /*
|
|
444
|
2550 Set mode bits of file named FILENAME to MODE (an integer).
|
|
428
|
2551 Only the 12 low bits of MODE are used.
|
|
|
2552 */
|
|
|
2553 (filename, mode))
|
|
|
2554 {
|
|
|
2555 /* This function can GC. GC checked 1997.04.10. */
|
|
|
2556 Lisp_Object abspath;
|
|
|
2557 Lisp_Object handler;
|
|
|
2558 struct gcpro gcpro1;
|
|
|
2559
|
|
|
2560 GCPRO1 (current_buffer->directory);
|
|
|
2561 abspath = Fexpand_file_name (filename, current_buffer->directory);
|
|
|
2562 UNGCPRO;
|
|
|
2563
|
|
|
2564 CHECK_INT (mode);
|
|
|
2565
|
|
|
2566 /* If the file name has special constructs in it,
|
|
|
2567 call the corresponding file handler. */
|
|
|
2568 GCPRO1 (abspath);
|
|
|
2569 handler = Ffind_file_name_handler (abspath, Qset_file_modes);
|
|
|
2570 UNGCPRO;
|
|
|
2571 if (!NILP (handler))
|
|
|
2572 return call3 (handler, Qset_file_modes, abspath, mode);
|
|
|
2573
|
|
|
2574 if (chmod ((char *) XSTRING_DATA (abspath), XINT (mode)) < 0)
|
|
|
2575 report_file_error ("Doing chmod", list1 (abspath));
|
|
|
2576
|
|
|
2577 return Qnil;
|
|
|
2578 }
|
|
|
2579
|
|
|
2580 DEFUN ("set-default-file-modes", Fset_default_file_modes, 1, 1, 0, /*
|
|
|
2581 Set the file permission bits for newly created files.
|
|
444
|
2582 The argument MODE should be an integer; if a bit in MODE is 1,
|
|
|
2583 subsequently created files will not have the permission corresponding
|
|
|
2584 to that bit enabled. Only the low 9 bits are used.
|
|
428
|
2585 This setting is inherited by subprocesses.
|
|
|
2586 */
|
|
|
2587 (mode))
|
|
|
2588 {
|
|
|
2589 CHECK_INT (mode);
|
|
|
2590
|
|
|
2591 umask ((~ XINT (mode)) & 0777);
|
|
|
2592
|
|
|
2593 return Qnil;
|
|
|
2594 }
|
|
|
2595
|
|
|
2596 DEFUN ("default-file-modes", Fdefault_file_modes, 0, 0, 0, /*
|
|
|
2597 Return the default file protection for created files.
|
|
|
2598 The umask value determines which permissions are enabled in newly
|
|
|
2599 created files. If a permission's bit in the umask is 1, subsequently
|
|
|
2600 created files will not have that permission enabled.
|
|
|
2601 */
|
|
|
2602 ())
|
|
|
2603 {
|
|
|
2604 int mode;
|
|
|
2605
|
|
|
2606 mode = umask (0);
|
|
|
2607 umask (mode);
|
|
|
2608
|
|
|
2609 return make_int ((~ mode) & 0777);
|
|
|
2610 }
|
|
|
2611
|
|
|
2612 DEFUN ("unix-sync", Funix_sync, 0, 0, "", /*
|
|
|
2613 Tell Unix to finish all pending disk updates.
|
|
|
2614 */
|
|
|
2615 ())
|
|
|
2616 {
|
|
442
|
2617 #ifndef WIN32_NATIVE
|
|
428
|
2618 sync ();
|
|
|
2619 #endif
|
|
|
2620 return Qnil;
|
|
|
2621 }
|
|
|
2622
|
|
|
2623
|
|
|
2624 DEFUN ("file-newer-than-file-p", Ffile_newer_than_file_p, 2, 2, 0, /*
|
|
|
2625 Return t if file FILE1 is newer than file FILE2.
|
|
|
2626 If FILE1 does not exist, the answer is nil;
|
|
|
2627 otherwise, if FILE2 does not exist, the answer is t.
|
|
|
2628 */
|
|
|
2629 (file1, file2))
|
|
|
2630 {
|
|
|
2631 /* This function can GC. GC checked 1997.04.10. */
|
|
|
2632 Lisp_Object abspath1, abspath2;
|
|
|
2633 struct stat st;
|
|
|
2634 int mtime1;
|
|
|
2635 Lisp_Object handler;
|
|
|
2636 struct gcpro gcpro1, gcpro2, gcpro3;
|
|
|
2637
|
|
|
2638 CHECK_STRING (file1);
|
|
|
2639 CHECK_STRING (file2);
|
|
|
2640
|
|
|
2641 abspath1 = Qnil;
|
|
|
2642 abspath2 = Qnil;
|
|
|
2643
|
|
|
2644 GCPRO3 (abspath1, abspath2, current_buffer->directory);
|
|
|
2645 abspath1 = expand_and_dir_to_file (file1, current_buffer->directory);
|
|
|
2646 abspath2 = expand_and_dir_to_file (file2, current_buffer->directory);
|
|
|
2647
|
|
|
2648 /* If the file name has special constructs in it,
|
|
|
2649 call the corresponding file handler. */
|
|
|
2650 handler = Ffind_file_name_handler (abspath1, Qfile_newer_than_file_p);
|
|
|
2651 if (NILP (handler))
|
|
|
2652 handler = Ffind_file_name_handler (abspath2, Qfile_newer_than_file_p);
|
|
|
2653 UNGCPRO;
|
|
|
2654 if (!NILP (handler))
|
|
|
2655 return call3 (handler, Qfile_newer_than_file_p, abspath1,
|
|
|
2656 abspath2);
|
|
|
2657
|
|
442
|
2658 if (xemacs_stat ((char *) XSTRING_DATA (abspath1), &st) < 0)
|
|
428
|
2659 return Qnil;
|
|
|
2660
|
|
|
2661 mtime1 = st.st_mtime;
|
|
|
2662
|
|
442
|
2663 if (xemacs_stat ((char *) XSTRING_DATA (abspath2), &st) < 0)
|
|
428
|
2664 return Qt;
|
|
|
2665
|
|
|
2666 return (mtime1 > st.st_mtime) ? Qt : Qnil;
|
|
|
2667 }
|
|
|
2668
|
|
|
2669
|
|
|
2670 /* Stack sizes > 2**16 is a good way to elicit compiler bugs */
|
|
|
2671 /* #define READ_BUF_SIZE (2 << 16) */
|
|
|
2672 #define READ_BUF_SIZE (1 << 15)
|
|
|
2673
|
|
|
2674 DEFUN ("insert-file-contents-internal", Finsert_file_contents_internal,
|
|
|
2675 1, 7, 0, /*
|
|
|
2676 Insert contents of file FILENAME after point; no coding-system frobbing.
|
|
|
2677 This function is identical to `insert-file-contents' except for the
|
|
|
2678 handling of the CODESYS and USED-CODESYS arguments under
|
|
|
2679 XEmacs/Mule. (When Mule support is not present, both functions are
|
|
|
2680 identical and ignore the CODESYS and USED-CODESYS arguments.)
|
|
|
2681
|
|
|
2682 If support for Mule exists in this Emacs, the file is decoded according
|
|
|
2683 to CODESYS; if omitted, no conversion happens. If USED-CODESYS is non-nil,
|
|
|
2684 it should be a symbol, and the actual coding system that was used for the
|
|
|
2685 decoding is stored into it. It will in general be different from CODESYS
|
|
|
2686 if CODESYS specifies automatic encoding detection or end-of-line detection.
|
|
|
2687
|
|
444
|
2688 Currently START and END refer to byte positions (as opposed to character
|
|
428
|
2689 positions), even in Mule. (Fixing this is very difficult.)
|
|
|
2690 */
|
|
444
|
2691 (filename, visit, start, end, replace, codesys, used_codesys))
|
|
428
|
2692 {
|
|
|
2693 /* This function can call lisp */
|
|
|
2694 struct stat st;
|
|
|
2695 int fd;
|
|
|
2696 int saverrno = 0;
|
|
|
2697 Charcount inserted = 0;
|
|
|
2698 int speccount;
|
|
|
2699 struct gcpro gcpro1, gcpro2, gcpro3, gcpro4, gcpro5;
|
|
|
2700 Lisp_Object handler = Qnil, val;
|
|
|
2701 int total;
|
|
|
2702 Bufbyte read_buf[READ_BUF_SIZE];
|
|
|
2703 int mc_count;
|
|
|
2704 struct buffer *buf = current_buffer;
|
|
|
2705 Lisp_Object curbuf;
|
|
|
2706 int not_regular = 0;
|
|
|
2707
|
|
|
2708 if (buf->base_buffer && ! NILP (visit))
|
|
|
2709 error ("Cannot do file visiting in an indirect buffer");
|
|
|
2710
|
|
|
2711 /* No need to call Fbarf_if_buffer_read_only() here.
|
|
|
2712 That's called in begin_multiple_change() or wherever. */
|
|
|
2713
|
|
|
2714 val = Qnil;
|
|
|
2715
|
|
|
2716 /* #### dmoore - should probably check in various places to see if
|
|
|
2717 curbuf was killed and if so signal an error? */
|
|
|
2718
|
|
|
2719 XSETBUFFER (curbuf, buf);
|
|
|
2720
|
|
|
2721 GCPRO5 (filename, val, visit, handler, curbuf);
|
|
|
2722
|
|
|
2723 mc_count = (NILP (replace)) ?
|
|
|
2724 begin_multiple_change (buf, BUF_PT (buf), BUF_PT (buf)) :
|
|
|
2725 begin_multiple_change (buf, BUF_BEG (buf), BUF_Z (buf));
|
|
|
2726
|
|
|
2727 speccount = specpdl_depth (); /* begin_multiple_change also adds
|
|
|
2728 an unwind_protect */
|
|
|
2729
|
|
|
2730 filename = Fexpand_file_name (filename, Qnil);
|
|
|
2731
|
|
|
2732 /* If the file name has special constructs in it,
|
|
|
2733 call the corresponding file handler. */
|
|
|
2734 handler = Ffind_file_name_handler (filename, Qinsert_file_contents);
|
|
|
2735 if (!NILP (handler))
|
|
|
2736 {
|
|
|
2737 val = call6 (handler, Qinsert_file_contents, filename,
|
|
444
|
2738 visit, start, end, replace);
|
|
428
|
2739 goto handled;
|
|
|
2740 }
|
|
|
2741
|
|
|
2742 #ifdef FILE_CODING
|
|
|
2743 if (!NILP (used_codesys))
|
|
|
2744 CHECK_SYMBOL (used_codesys);
|
|
|
2745 #endif
|
|
|
2746
|
|
444
|
2747 if ( (!NILP (start) || !NILP (end)) && !NILP (visit) )
|
|
428
|
2748 error ("Attempt to visit less than an entire file");
|
|
|
2749
|
|
|
2750 fd = -1;
|
|
|
2751
|
|
442
|
2752 if (xemacs_stat ((char *) XSTRING_DATA (filename), &st) < 0)
|
|
428
|
2753 {
|
|
|
2754 if (fd >= 0) close (fd);
|
|
|
2755 badopen:
|
|
|
2756 if (NILP (visit))
|
|
|
2757 report_file_error ("Opening input file", list1 (filename));
|
|
|
2758 st.st_mtime = -1;
|
|
|
2759 goto notfound;
|
|
|
2760 }
|
|
|
2761
|
|
|
2762 #ifdef S_IFREG
|
|
|
2763 /* Signal an error if we are accessing a non-regular file, with
|
|
444
|
2764 REPLACE, START or END being non-nil. */
|
|
428
|
2765 if (!S_ISREG (st.st_mode))
|
|
|
2766 {
|
|
|
2767 not_regular = 1;
|
|
|
2768
|
|
|
2769 if (!NILP (visit))
|
|
|
2770 goto notfound;
|
|
|
2771
|
|
444
|
2772 if (!NILP (replace) || !NILP (start) || !NILP (end))
|
|
428
|
2773 {
|
|
|
2774 end_multiple_change (buf, mc_count);
|
|
|
2775
|
|
444
|
2776 RETURN_UNGCPRO
|
|
|
2777 (Fsignal (Qfile_error,
|
|
|
2778 list2 (build_translated_string("not a regular file"),
|
|
|
2779 filename)));
|
|
428
|
2780 }
|
|
|
2781 }
|
|
|
2782 #endif /* S_IFREG */
|
|
|
2783
|
|
444
|
2784 if (!NILP (start))
|
|
|
2785 CHECK_INT (start);
|
|
428
|
2786 else
|
|
444
|
2787 start = Qzero;
|
|
428
|
2788
|
|
|
2789 if (!NILP (end))
|
|
|
2790 CHECK_INT (end);
|
|
|
2791
|
|
|
2792 if (fd < 0)
|
|
|
2793 {
|
|
|
2794 if ((fd = interruptible_open ((char *) XSTRING_DATA (filename),
|
|
|
2795 O_RDONLY | OPEN_BINARY, 0)) < 0)
|
|
|
2796 goto badopen;
|
|
|
2797 }
|
|
|
2798
|
|
|
2799 /* Replacement should preserve point as it preserves markers. */
|
|
|
2800 if (!NILP (replace))
|
|
|
2801 record_unwind_protect (restore_point_unwind, Fpoint_marker (Qnil, Qnil));
|
|
|
2802
|
|
|
2803 record_unwind_protect (close_file_unwind, make_int (fd));
|
|
|
2804
|
|
|
2805 /* Supposedly happens on VMS. */
|
|
|
2806 if (st.st_size < 0)
|
|
|
2807 error ("File size is negative");
|
|
|
2808
|
|
|
2809 if (NILP (end))
|
|
|
2810 {
|
|
|
2811 if (!not_regular)
|
|
|
2812 {
|
|
|
2813 end = make_int (st.st_size);
|
|
|
2814 if (XINT (end) != st.st_size)
|
|
|
2815 error ("Maximum buffer size exceeded");
|
|
|
2816 }
|
|
|
2817 }
|
|
|
2818
|
|
|
2819 /* If requested, replace the accessible part of the buffer
|
|
|
2820 with the file contents. Avoid replacing text at the
|
|
|
2821 beginning or end of the buffer that matches the file contents;
|
|
|
2822 that preserves markers pointing to the unchanged parts. */
|
|
|
2823 #if !defined (FILE_CODING)
|
|
|
2824 /* The replace-mode code currently only works when the assumption
|
|
|
2825 'one byte == one char' holds true. This fails Mule because
|
|
|
2826 files may contain multibyte characters. It holds under Windows NT
|
|
|
2827 provided we convert CRLF into LF. */
|
|
|
2828 # define FSFMACS_SPEEDY_INSERT
|
|
|
2829 #endif /* !defined (FILE_CODING) */
|
|
|
2830
|
|
|
2831 #ifndef FSFMACS_SPEEDY_INSERT
|
|
|
2832 if (!NILP (replace))
|
|
|
2833 {
|
|
|
2834 buffer_delete_range (buf, BUF_BEG (buf), BUF_Z (buf),
|
|
|
2835 !NILP (visit) ? INSDEL_NO_LOCKING : 0);
|
|
|
2836 }
|
|
|
2837 #else /* FSFMACS_SPEEDY_INSERT */
|
|
|
2838 if (!NILP (replace))
|
|
|
2839 {
|
|
|
2840 char buffer[1 << 14];
|
|
|
2841 Bufpos same_at_start = BUF_BEGV (buf);
|
|
|
2842 Bufpos same_at_end = BUF_ZV (buf);
|
|
|
2843 int overlap;
|
|
|
2844
|
|
|
2845 /* Count how many chars at the start of the file
|
|
|
2846 match the text at the beginning of the buffer. */
|
|
|
2847 while (1)
|
|
|
2848 {
|
|
|
2849 int nread;
|
|
|
2850 Bufpos bufpos;
|
|
|
2851 nread = read_allowing_quit (fd, buffer, sizeof buffer);
|
|
|
2852 if (nread < 0)
|
|
|
2853 error ("IO error reading %s: %s",
|
|
|
2854 XSTRING_DATA (filename), strerror (errno));
|
|
|
2855 else if (nread == 0)
|
|
|
2856 break;
|
|
|
2857 bufpos = 0;
|
|
|
2858 while (bufpos < nread && same_at_start < BUF_ZV (buf)
|
|
|
2859 && BUF_FETCH_CHAR (buf, same_at_start) == buffer[bufpos])
|
|
|
2860 same_at_start++, bufpos++;
|
|
|
2861 /* If we found a discrepancy, stop the scan.
|
|
|
2862 Otherwise loop around and scan the next bufferful. */
|
|
|
2863 if (bufpos != nread)
|
|
|
2864 break;
|
|
|
2865 }
|
|
|
2866 /* If the file matches the buffer completely,
|
|
|
2867 there's no need to replace anything. */
|
|
|
2868 if (same_at_start - BUF_BEGV (buf) == st.st_size)
|
|
|
2869 {
|
|
|
2870 close (fd);
|
|
|
2871 unbind_to (speccount, Qnil);
|
|
|
2872 /* Truncate the buffer to the size of the file. */
|
|
|
2873 buffer_delete_range (buf, same_at_start, same_at_end,
|
|
|
2874 !NILP (visit) ? INSDEL_NO_LOCKING : 0);
|
|
|
2875 goto handled;
|
|
|
2876 }
|
|
|
2877 /* Count how many chars at the end of the file
|
|
|
2878 match the text at the end of the buffer. */
|
|
|
2879 while (1)
|
|
|
2880 {
|
|
|
2881 int total_read, nread;
|
|
|
2882 Bufpos bufpos, curpos, trial;
|
|
|
2883
|
|
|
2884 /* At what file position are we now scanning? */
|
|
|
2885 curpos = st.st_size - (BUF_ZV (buf) - same_at_end);
|
|
|
2886 /* If the entire file matches the buffer tail, stop the scan. */
|
|
|
2887 if (curpos == 0)
|
|
|
2888 break;
|
|
|
2889 /* How much can we scan in the next step? */
|
|
|
2890 trial = min (curpos, (Bufpos) sizeof (buffer));
|
|
|
2891 if (lseek (fd, curpos - trial, 0) < 0)
|
|
|
2892 report_file_error ("Setting file position", list1 (filename));
|
|
|
2893
|
|
|
2894 total_read = 0;
|
|
|
2895 while (total_read < trial)
|
|
|
2896 {
|
|
|
2897 nread = read_allowing_quit (fd, buffer + total_read,
|
|
|
2898 trial - total_read);
|
|
|
2899 if (nread <= 0)
|
|
|
2900 report_file_error ("IO error reading file", list1 (filename));
|
|
|
2901 total_read += nread;
|
|
|
2902 }
|
|
|
2903 /* Scan this bufferful from the end, comparing with
|
|
|
2904 the Emacs buffer. */
|
|
|
2905 bufpos = total_read;
|
|
|
2906 /* Compare with same_at_start to avoid counting some buffer text
|
|
|
2907 as matching both at the file's beginning and at the end. */
|
|
|
2908 while (bufpos > 0 && same_at_end > same_at_start
|
|
|
2909 && BUF_FETCH_CHAR (buf, same_at_end - 1) ==
|
|
|
2910 buffer[bufpos - 1])
|
|
|
2911 same_at_end--, bufpos--;
|
|
|
2912 /* If we found a discrepancy, stop the scan.
|
|
|
2913 Otherwise loop around and scan the preceding bufferful. */
|
|
|
2914 if (bufpos != 0)
|
|
|
2915 break;
|
|
|
2916 /* If display current starts at beginning of line,
|
|
|
2917 keep it that way. */
|
|
|
2918 if (XBUFFER (XWINDOW (Fselected_window (Qnil))->buffer) == buf)
|
|
|
2919 XWINDOW (Fselected_window (Qnil))->start_at_line_beg =
|
|
|
2920 !NILP (Fbolp (make_buffer (buf)));
|
|
|
2921 }
|
|
|
2922
|
|
|
2923 /* Don't try to reuse the same piece of text twice. */
|
|
|
2924 overlap = same_at_start - BUF_BEGV (buf) -
|
|
|
2925 (same_at_end + st.st_size - BUF_ZV (buf));
|
|
|
2926 if (overlap > 0)
|
|
|
2927 same_at_end += overlap;
|
|
|
2928
|
|
|
2929 /* Arrange to read only the nonmatching middle part of the file. */
|
|
444
|
2930 start = make_int (same_at_start - BUF_BEGV (buf));
|
|
428
|
2931 end = make_int (st.st_size - (BUF_ZV (buf) - same_at_end));
|
|
|
2932
|
|
|
2933 buffer_delete_range (buf, same_at_start, same_at_end,
|
|
|
2934 !NILP (visit) ? INSDEL_NO_LOCKING : 0);
|
|
|
2935 /* Insert from the file at the proper position. */
|
|
|
2936 BUF_SET_PT (buf, same_at_start);
|
|
|
2937 }
|
|
|
2938 #endif /* FSFMACS_SPEEDY_INSERT */
|
|
|
2939
|
|
|
2940 if (!not_regular)
|
|
|
2941 {
|
|
444
|
2942 total = XINT (end) - XINT (start);
|
|
428
|
2943
|
|
|
2944 /* Make sure point-max won't overflow after this insertion. */
|
|
|
2945 if (total != XINT (make_int (total)))
|
|
|
2946 error ("Maximum buffer size exceeded");
|
|
|
2947 }
|
|
|
2948 else
|
|
|
2949 /* For a special file, all we can do is guess. The value of -1
|
|
|
2950 will make the stream functions read as much as possible. */
|
|
|
2951 total = -1;
|
|
|
2952
|
|
444
|
2953 if (XINT (start) != 0
|
|
428
|
2954 #ifdef FSFMACS_SPEEDY_INSERT
|
|
|
2955 /* why was this here? asked jwz. The reason is that the replace-mode
|
|
|
2956 connivings above will normally put the file pointer other than
|
|
|
2957 where it should be. */
|
|
|
2958 || !NILP (replace)
|
|
|
2959 #endif /* !FSFMACS_SPEEDY_INSERT */
|
|
|
2960 )
|
|
|
2961 {
|
|
444
|
2962 if (lseek (fd, XINT (start), 0) < 0)
|
|
428
|
2963 report_file_error ("Setting file position", list1 (filename));
|
|
|
2964 }
|
|
|
2965
|
|
|
2966 {
|
|
|
2967 Bufpos cur_point = BUF_PT (buf);
|
|
|
2968 struct gcpro ngcpro1;
|
|
|
2969 Lisp_Object stream = make_filedesc_input_stream (fd, 0, total,
|
|
|
2970 LSTR_ALLOW_QUIT);
|
|
|
2971
|
|
|
2972 NGCPRO1 (stream);
|
|
|
2973 Lstream_set_buffering (XLSTREAM (stream), LSTREAM_BLOCKN_BUFFERED, 65536);
|
|
|
2974 #ifdef FILE_CODING
|
|
|
2975 stream = make_decoding_input_stream
|
|
|
2976 (XLSTREAM (stream), Fget_coding_system (codesys));
|
|
|
2977 Lstream_set_character_mode (XLSTREAM (stream));
|
|
|
2978 Lstream_set_buffering (XLSTREAM (stream), LSTREAM_BLOCKN_BUFFERED, 65536);
|
|
|
2979 #endif /* FILE_CODING */
|
|
|
2980
|
|
|
2981 record_unwind_protect (delete_stream_unwind, stream);
|
|
|
2982
|
|
|
2983 /* No need to limit the amount of stuff we attempt to read. (It would
|
|
|
2984 be incorrect, anyway, when Mule is enabled.) Instead, the limiting
|
|
|
2985 occurs inside of the filedesc stream. */
|
|
|
2986 while (1)
|
|
|
2987 {
|
|
|
2988 ssize_t this_len;
|
|
|
2989 Charcount cc_inserted;
|
|
|
2990
|
|
|
2991 QUIT;
|
|
|
2992 this_len = Lstream_read (XLSTREAM (stream), read_buf,
|
|
|
2993 sizeof (read_buf));
|
|
|
2994
|
|
|
2995 if (this_len <= 0)
|
|
|
2996 {
|
|
|
2997 if (this_len < 0)
|
|
|
2998 saverrno = errno;
|
|
|
2999 break;
|
|
|
3000 }
|
|
|
3001
|
|
|
3002 cc_inserted = buffer_insert_raw_string_1 (buf, cur_point, read_buf,
|
|
|
3003 this_len,
|
|
|
3004 !NILP (visit)
|
|
|
3005 ? INSDEL_NO_LOCKING : 0);
|
|
|
3006 inserted += cc_inserted;
|
|
|
3007 cur_point += cc_inserted;
|
|
|
3008 }
|
|
|
3009 #ifdef FILE_CODING
|
|
|
3010 if (!NILP (used_codesys))
|
|
|
3011 {
|
|
|
3012 Fset (used_codesys,
|
|
|
3013 XCODING_SYSTEM_NAME (decoding_stream_coding_system (XLSTREAM (stream))));
|
|
|
3014 }
|
|
|
3015 #endif /* FILE_CODING */
|
|
|
3016 NUNGCPRO;
|
|
|
3017 }
|
|
|
3018
|
|
|
3019 /* Close the file/stream */
|
|
|
3020 unbind_to (speccount, Qnil);
|
|
|
3021
|
|
|
3022 if (saverrno != 0)
|
|
|
3023 {
|
|
|
3024 error ("IO error reading %s: %s",
|
|
|
3025 XSTRING_DATA (filename), strerror (saverrno));
|
|
|
3026 }
|
|
|
3027
|
|
|
3028 notfound:
|
|
|
3029 handled:
|
|
|
3030
|
|
|
3031 end_multiple_change (buf, mc_count);
|
|
|
3032
|
|
|
3033 if (!NILP (visit))
|
|
|
3034 {
|
|
|
3035 if (!EQ (buf->undo_list, Qt))
|
|
|
3036 buf->undo_list = Qnil;
|
|
|
3037 if (NILP (handler))
|
|
|
3038 {
|
|
|
3039 buf->modtime = st.st_mtime;
|
|
|
3040 buf->filename = filename;
|
|
|
3041 /* XEmacs addition: */
|
|
|
3042 /* This function used to be in C, ostensibly so that
|
|
|
3043 it could be called here. But that's just silly.
|
|
|
3044 There's no reason C code can't call out to Lisp
|
|
|
3045 code, and it's a lot cleaner this way. */
|
|
444
|
3046 /* Note: compute-buffer-file-truename is called for
|
|
|
3047 side-effect! Its return value is intentionally
|
|
|
3048 ignored. */
|
|
428
|
3049 if (!NILP (Ffboundp (Qcompute_buffer_file_truename)))
|
|
|
3050 call1 (Qcompute_buffer_file_truename, make_buffer (buf));
|
|
|
3051 }
|
|
|
3052 BUF_SAVE_MODIFF (buf) = BUF_MODIFF (buf);
|
|
|
3053 buf->auto_save_modified = BUF_MODIFF (buf);
|
|
|
3054 buf->saved_size = make_int (BUF_SIZE (buf));
|
|
|
3055 #ifdef CLASH_DETECTION
|
|
|
3056 if (NILP (handler))
|
|
|
3057 {
|
|
|
3058 if (!NILP (buf->file_truename))
|
|
|
3059 unlock_file (buf->file_truename);
|
|
|
3060 unlock_file (filename);
|
|
|
3061 }
|
|
|
3062 #endif /* CLASH_DETECTION */
|
|
|
3063 if (not_regular)
|
|
|
3064 RETURN_UNGCPRO (Fsignal (Qfile_error,
|
|
|
3065 list2 (build_string ("not a regular file"),
|
|
|
3066 filename)));
|
|
|
3067
|
|
|
3068 /* If visiting nonexistent file, return nil. */
|
|
|
3069 if (buf->modtime == -1)
|
|
|
3070 report_file_error ("Opening input file",
|
|
|
3071 list1 (filename));
|
|
|
3072 }
|
|
|
3073
|
|
|
3074 /* Decode file format */
|
|
|
3075 if (inserted > 0)
|
|
|
3076 {
|
|
|
3077 Lisp_Object insval = call3 (Qformat_decode,
|
|
|
3078 Qnil, make_int (inserted), visit);
|
|
|
3079 CHECK_INT (insval);
|
|
|
3080 inserted = XINT (insval);
|
|
|
3081 }
|
|
|
3082
|
|
|
3083 if (inserted > 0)
|
|
|
3084 {
|
|
|
3085 Lisp_Object p;
|
|
|
3086 struct gcpro ngcpro1;
|
|
|
3087
|
|
|
3088 NGCPRO1 (p);
|
|
|
3089 EXTERNAL_LIST_LOOP (p, Vafter_insert_file_functions)
|
|
|
3090 {
|
|
|
3091 Lisp_Object insval =
|
|
|
3092 call1 (XCAR (p), make_int (inserted));
|
|
|
3093 if (!NILP (insval))
|
|
|
3094 {
|
|
|
3095 CHECK_NATNUM (insval);
|
|
|
3096 inserted = XINT (insval);
|
|
|
3097 }
|
|
|
3098 QUIT;
|
|
|
3099 }
|
|
|
3100 NUNGCPRO;
|
|
|
3101 }
|
|
|
3102
|
|
|
3103 UNGCPRO;
|
|
|
3104
|
|
|
3105 if (!NILP (val))
|
|
|
3106 return (val);
|
|
|
3107 else
|
|
|
3108 return (list2 (filename, make_int (inserted)));
|
|
|
3109 }
|
|
|
3110
|
|
|
3111
|
|
|
3112 static int a_write (Lisp_Object outstream, Lisp_Object instream, int pos,
|
|
|
3113 Lisp_Object *annot);
|
|
|
3114 static Lisp_Object build_annotations (Lisp_Object start, Lisp_Object end);
|
|
|
3115
|
|
|
3116 /* If build_annotations switched buffers, switch back to BUF.
|
|
|
3117 Kill the temporary buffer that was selected in the meantime. */
|
|
|
3118
|
|
|
3119 static Lisp_Object
|
|
|
3120 build_annotations_unwind (Lisp_Object buf)
|
|
|
3121 {
|
|
|
3122 Lisp_Object tembuf;
|
|
|
3123
|
|
|
3124 if (XBUFFER (buf) == current_buffer)
|
|
|
3125 return Qnil;
|
|
|
3126 tembuf = Fcurrent_buffer ();
|
|
|
3127 Fset_buffer (buf);
|
|
|
3128 Fkill_buffer (tembuf);
|
|
|
3129 return Qnil;
|
|
|
3130 }
|
|
|
3131
|
|
|
3132 DEFUN ("write-region-internal", Fwrite_region_internal, 3, 7,
|
|
|
3133 "r\nFWrite region to file: ", /*
|
|
|
3134 Write current region into specified file; no coding-system frobbing.
|
|
|
3135 This function is identical to `write-region' except for the handling
|
|
|
3136 of the CODESYS argument under XEmacs/Mule. (When Mule support is not
|
|
|
3137 present, both functions are identical and ignore the CODESYS argument.)
|
|
|
3138 If support for Mule exists in this Emacs, the file is encoded according
|
|
|
3139 to the value of CODESYS. If this is nil, no code conversion occurs.
|
|
|
3140 */
|
|
|
3141 (start, end, filename, append, visit, lockname, codesys))
|
|
|
3142 {
|
|
442
|
3143 /* This function can call lisp. GC checked 2000-07-28 ben */
|
|
428
|
3144 int desc;
|
|
|
3145 int failure;
|
|
|
3146 int save_errno = 0;
|
|
|
3147 struct stat st;
|
|
442
|
3148 Lisp_Object fn = Qnil;
|
|
428
|
3149 int speccount = specpdl_depth ();
|
|
|
3150 int visiting_other = STRINGP (visit);
|
|
|
3151 int visiting = (EQ (visit, Qt) || visiting_other);
|
|
|
3152 int quietly = (!visiting && !NILP (visit));
|
|
|
3153 Lisp_Object visit_file = Qnil;
|
|
|
3154 Lisp_Object annotations = Qnil;
|
|
|
3155 struct buffer *given_buffer;
|
|
|
3156 Bufpos start1, end1;
|
|
442
|
3157 struct gcpro gcpro1, gcpro2, gcpro3, gcpro4, gcpro5;
|
|
|
3158 struct gcpro ngcpro1, ngcpro2;
|
|
|
3159 Lisp_Object curbuf;
|
|
|
3160
|
|
|
3161 XSETBUFFER (curbuf, current_buffer);
|
|
|
3162
|
|
|
3163 /* start, end, visit, and append are never modified in this fun
|
|
|
3164 so we don't protect them. */
|
|
|
3165 GCPRO5 (visit_file, filename, codesys, lockname, annotations);
|
|
|
3166 NGCPRO2 (curbuf, fn);
|
|
|
3167
|
|
|
3168 /* [[ dmoore - if Fexpand_file_name or handlers kill the buffer,
|
|
428
|
3169 we should signal an error rather than blissfully continuing
|
|
|
3170 along. ARGH, this function is going to lose lose lose. We need
|
|
|
3171 to protect the current_buffer from being destroyed, but the
|
|
442
|
3172 multiple return points make this a pain in the butt. ]] we do
|
|
|
3173 protect curbuf now. --ben */
|
|
428
|
3174
|
|
|
3175 #ifdef FILE_CODING
|
|
|
3176 codesys = Fget_coding_system (codesys);
|
|
|
3177 #endif /* FILE_CODING */
|
|
|
3178
|
|
|
3179 if (current_buffer->base_buffer && ! NILP (visit))
|
|
442
|
3180 invalid_operation ("Cannot do file visiting in an indirect buffer",
|
|
|
3181 curbuf);
|
|
428
|
3182
|
|
|
3183 if (!NILP (start) && !STRINGP (start))
|
|
|
3184 get_buffer_range_char (current_buffer, start, end, &start1, &end1, 0);
|
|
|
3185
|
|
|
3186 {
|
|
|
3187 Lisp_Object handler;
|
|
|
3188
|
|
|
3189 if (visiting_other)
|
|
|
3190 visit_file = Fexpand_file_name (visit, Qnil);
|
|
|
3191 else
|
|
|
3192 visit_file = filename;
|
|
|
3193 filename = Fexpand_file_name (filename, Qnil);
|
|
|
3194
|
|
|
3195 if (NILP (lockname))
|
|
|
3196 lockname = visit_file;
|
|
|
3197
|
|
442
|
3198 /* We used to UNGCPRO here. BAD! visit_file is used below after
|
|
|
3199 more Lisp calling. */
|
|
428
|
3200 /* If the file name has special constructs in it,
|
|
|
3201 call the corresponding file handler. */
|
|
|
3202 handler = Ffind_file_name_handler (filename, Qwrite_region);
|
|
|
3203 /* If FILENAME has no handler, see if VISIT has one. */
|
|
|
3204 if (NILP (handler) && STRINGP (visit))
|
|
|
3205 handler = Ffind_file_name_handler (visit, Qwrite_region);
|
|
|
3206
|
|
|
3207 if (!NILP (handler))
|
|
|
3208 {
|
|
|
3209 Lisp_Object val = call8 (handler, Qwrite_region, start, end,
|
|
|
3210 filename, append, visit, lockname, codesys);
|
|
|
3211 if (visiting)
|
|
|
3212 {
|
|
|
3213 BUF_SAVE_MODIFF (current_buffer) = BUF_MODIFF (current_buffer);
|
|
|
3214 current_buffer->saved_size = make_int (BUF_SIZE (current_buffer));
|
|
|
3215 current_buffer->filename = visit_file;
|
|
|
3216 MARK_MODELINE_CHANGED;
|
|
|
3217 }
|
|
442
|
3218 NUNGCPRO;
|
|
|
3219 UNGCPRO;
|
|
428
|
3220 return val;
|
|
|
3221 }
|
|
|
3222 }
|
|
|
3223
|
|
|
3224 #ifdef CLASH_DETECTION
|
|
|
3225 if (!auto_saving)
|
|
442
|
3226 lock_file (lockname);
|
|
428
|
3227 #endif /* CLASH_DETECTION */
|
|
|
3228
|
|
|
3229 /* Special kludge to simplify auto-saving. */
|
|
|
3230 if (NILP (start))
|
|
|
3231 {
|
|
|
3232 start1 = BUF_BEG (current_buffer);
|
|
|
3233 end1 = BUF_Z (current_buffer);
|
|
|
3234 }
|
|
|
3235
|
|
|
3236 record_unwind_protect (build_annotations_unwind, Fcurrent_buffer ());
|
|
|
3237
|
|
|
3238 given_buffer = current_buffer;
|
|
|
3239 annotations = build_annotations (start, end);
|
|
|
3240 if (current_buffer != given_buffer)
|
|
|
3241 {
|
|
|
3242 start1 = BUF_BEGV (current_buffer);
|
|
|
3243 end1 = BUF_ZV (current_buffer);
|
|
|
3244 }
|
|
|
3245
|
|
|
3246 fn = filename;
|
|
|
3247 desc = -1;
|
|
|
3248 if (!NILP (append))
|
|
|
3249 {
|
|
|
3250 desc = open ((char *) XSTRING_DATA (fn), O_WRONLY | OPEN_BINARY, 0);
|
|
|
3251 }
|
|
|
3252 if (desc < 0)
|
|
|
3253 {
|
|
|
3254 desc = open ((char *) XSTRING_DATA (fn),
|
|
442
|
3255 O_WRONLY | O_TRUNC | O_CREAT | OPEN_BINARY,
|
|
|
3256 auto_saving ? auto_save_mode_bits : CREAT_MODE);
|
|
428
|
3257 }
|
|
|
3258
|
|
|
3259 if (desc < 0)
|
|
|
3260 {
|
|
|
3261 #ifdef CLASH_DETECTION
|
|
|
3262 save_errno = errno;
|
|
|
3263 if (!auto_saving) unlock_file (lockname);
|
|
|
3264 errno = save_errno;
|
|
|
3265 #endif /* CLASH_DETECTION */
|
|
|
3266 report_file_error ("Opening output file", list1 (filename));
|
|
|
3267 }
|
|
|
3268
|
|
|
3269 {
|
|
|
3270 Lisp_Object desc_locative = Fcons (make_int (desc), Qnil);
|
|
|
3271 Lisp_Object instream = Qnil, outstream = Qnil;
|
|
442
|
3272 struct gcpro nngcpro1, nngcpro2;
|
|
428
|
3273 /* need to gcpro; QUIT could happen out of call to write() */
|
|
442
|
3274 NNGCPRO2 (instream, outstream);
|
|
428
|
3275
|
|
|
3276 record_unwind_protect (close_file_unwind, desc_locative);
|
|
|
3277
|
|
|
3278 if (!NILP (append))
|
|
|
3279 {
|
|
|
3280 if (lseek (desc, 0, 2) < 0)
|
|
|
3281 {
|
|
|
3282 #ifdef CLASH_DETECTION
|
|
|
3283 if (!auto_saving) unlock_file (lockname);
|
|
|
3284 #endif /* CLASH_DETECTION */
|
|
|
3285 report_file_error ("Lseek error",
|
|
|
3286 list1 (filename));
|
|
|
3287 }
|
|
|
3288 }
|
|
|
3289
|
|
|
3290 failure = 0;
|
|
|
3291
|
|
|
3292 /* Note: I tried increasing the buffering size, along with
|
|
|
3293 various other tricks, but nothing seemed to make much of
|
|
|
3294 a difference in the time it took to save a large file.
|
|
|
3295 (Actually that's not true. With a local disk, changing
|
|
|
3296 the buffer size doesn't seem to make much difference.
|
|
|
3297 With an NFS-mounted disk, it could make a lot of difference
|
|
|
3298 because you're affecting the number of network requests
|
|
|
3299 that need to be made, and there could be a large latency
|
|
|
3300 for each request. So I've increased the buffer size
|
|
|
3301 to 64K.) */
|
|
|
3302 outstream = make_filedesc_output_stream (desc, 0, -1, 0);
|
|
|
3303 Lstream_set_buffering (XLSTREAM (outstream),
|
|
|
3304 LSTREAM_BLOCKN_BUFFERED, 65536);
|
|
|
3305 #ifdef FILE_CODING
|
|
|
3306 outstream =
|
|
|
3307 make_encoding_output_stream (XLSTREAM (outstream), codesys);
|
|
|
3308 Lstream_set_buffering (XLSTREAM (outstream),
|
|
|
3309 LSTREAM_BLOCKN_BUFFERED, 65536);
|
|
|
3310 #endif /* FILE_CODING */
|
|
|
3311 if (STRINGP (start))
|
|
|
3312 {
|
|
|
3313 instream = make_lisp_string_input_stream (start, 0, -1);
|
|
|
3314 start1 = 0;
|
|
|
3315 }
|
|
|
3316 else
|
|
|
3317 instream = make_lisp_buffer_input_stream (current_buffer, start1, end1,
|
|
|
3318 LSTR_SELECTIVE |
|
|
|
3319 LSTR_IGNORE_ACCESSIBLE);
|
|
|
3320 failure = (0 > (a_write (outstream, instream, start1,
|
|
|
3321 &annotations)));
|
|
|
3322 save_errno = errno;
|
|
|
3323 /* Note that this doesn't close the desc since we created the
|
|
|
3324 stream without the LSTR_CLOSING flag, but it does
|
|
|
3325 flush out any buffered data. */
|
|
|
3326 if (Lstream_close (XLSTREAM (outstream)) < 0)
|
|
|
3327 {
|
|
|
3328 failure = 1;
|
|
|
3329 save_errno = errno;
|
|
|
3330 }
|
|
|
3331 Lstream_close (XLSTREAM (instream));
|
|
|
3332
|
|
|
3333 #ifdef HAVE_FSYNC
|
|
|
3334 /* Note fsync appears to change the modtime on BSD4.2 (both vax and sun).
|
|
|
3335 Disk full in NFS may be reported here. */
|
|
|
3336 /* mib says that closing the file will try to write as fast as NFS can do
|
|
|
3337 it, and that means the fsync here is not crucial for autosave files. */
|
|
|
3338 if (!auto_saving && fsync (desc) < 0
|
|
|
3339 /* If fsync fails with EINTR, don't treat that as serious. */
|
|
|
3340 && errno != EINTR)
|
|
|
3341 {
|
|
|
3342 failure = 1;
|
|
|
3343 save_errno = errno;
|
|
|
3344 }
|
|
|
3345 #endif /* HAVE_FSYNC */
|
|
|
3346
|
|
440
|
3347 /* Spurious "file has changed on disk" warnings used to be seen on
|
|
|
3348 systems where close() can change the modtime. This is known to
|
|
|
3349 happen on various NFS file systems, on Windows, and on Linux.
|
|
|
3350 Rather than handling this on a per-system basis, we
|
|
442
|
3351 unconditionally do the xemacs_stat() after the close(). */
|
|
428
|
3352
|
|
|
3353 /* NFS can report a write failure now. */
|
|
|
3354 if (close (desc) < 0)
|
|
|
3355 {
|
|
|
3356 failure = 1;
|
|
|
3357 save_errno = errno;
|
|
|
3358 }
|
|
|
3359
|
|
|
3360 /* Discard the close unwind-protect. Execute the one for
|
|
|
3361 build_annotations (switches back to the original current buffer
|
|
|
3362 as necessary). */
|
|
|
3363 XCAR (desc_locative) = Qnil;
|
|
|
3364 unbind_to (speccount, Qnil);
|
|
442
|
3365
|
|
|
3366 NNUNGCPRO;
|
|
428
|
3367 }
|
|
|
3368
|
|
442
|
3369 xemacs_stat ((char *) XSTRING_DATA (fn), &st);
|
|
428
|
3370
|
|
|
3371 #ifdef CLASH_DETECTION
|
|
|
3372 if (!auto_saving)
|
|
|
3373 unlock_file (lockname);
|
|
|
3374 #endif /* CLASH_DETECTION */
|
|
|
3375
|
|
|
3376 /* Do this before reporting IO error
|
|
|
3377 to avoid a "file has changed on disk" warning on
|
|
|
3378 next attempt to save. */
|
|
|
3379 if (visiting)
|
|
|
3380 current_buffer->modtime = st.st_mtime;
|
|
|
3381
|
|
|
3382 if (failure)
|
|
442
|
3383 {
|
|
|
3384 errno = save_errno;
|
|
|
3385 report_file_error ("Writing file", list1 (fn));
|
|
|
3386 }
|
|
428
|
3387
|
|
|
3388 if (visiting)
|
|
|
3389 {
|
|
|
3390 BUF_SAVE_MODIFF (current_buffer) = BUF_MODIFF (current_buffer);
|
|
|
3391 current_buffer->saved_size = make_int (BUF_SIZE (current_buffer));
|
|
|
3392 current_buffer->filename = visit_file;
|
|
|
3393 MARK_MODELINE_CHANGED;
|
|
|
3394 }
|
|
|
3395 else if (quietly)
|
|
|
3396 {
|
|
442
|
3397 NUNGCPRO;
|
|
|
3398 UNGCPRO;
|
|
428
|
3399 return Qnil;
|
|
|
3400 }
|
|
|
3401
|
|
|
3402 if (!auto_saving)
|
|
|
3403 {
|
|
|
3404 if (visiting_other)
|
|
|
3405 message ("Wrote %s", XSTRING_DATA (visit_file));
|
|
|
3406 else
|
|
|
3407 {
|
|
446
|
3408 Lisp_Object fsp = Qnil;
|
|
442
|
3409 struct gcpro nngcpro1;
|
|
|
3410
|
|
|
3411 NNGCPRO1 (fsp);
|
|
428
|
3412 fsp = Ffile_symlink_p (fn);
|
|
|
3413 if (NILP (fsp))
|
|
|
3414 message ("Wrote %s", XSTRING_DATA (fn));
|
|
|
3415 else
|
|
|
3416 message ("Wrote %s (symlink to %s)",
|
|
|
3417 XSTRING_DATA (fn), XSTRING_DATA (fsp));
|
|
442
|
3418 NNUNGCPRO;
|
|
428
|
3419 }
|
|
|
3420 }
|
|
442
|
3421 NUNGCPRO;
|
|
|
3422 UNGCPRO;
|
|
428
|
3423 return Qnil;
|
|
|
3424 }
|
|
|
3425
|
|
|
3426 /* #### This is such a load of shit!!!! There is no way we should define
|
|
|
3427 something so stupid as a subr, just sort the fucking list more
|
|
|
3428 intelligently. */
|
|
|
3429 DEFUN ("car-less-than-car", Fcar_less_than_car, 2, 2, 0, /*
|
|
|
3430 Return t if (car A) is numerically less than (car B).
|
|
|
3431 */
|
|
|
3432 (a, b))
|
|
|
3433 {
|
|
|
3434 Lisp_Object objs[2];
|
|
|
3435 objs[0] = Fcar (a);
|
|
|
3436 objs[1] = Fcar (b);
|
|
|
3437 return Flss (2, objs);
|
|
|
3438 }
|
|
|
3439
|
|
|
3440 /* Heh heh heh, let's define this too, just to aggravate the person who
|
|
|
3441 wrote the above comment. */
|
|
|
3442 DEFUN ("cdr-less-than-cdr", Fcdr_less_than_cdr, 2, 2, 0, /*
|
|
|
3443 Return t if (cdr A) is numerically less than (cdr B).
|
|
|
3444 */
|
|
|
3445 (a, b))
|
|
|
3446 {
|
|
|
3447 Lisp_Object objs[2];
|
|
|
3448 objs[0] = Fcdr (a);
|
|
|
3449 objs[1] = Fcdr (b);
|
|
|
3450 return Flss (2, objs);
|
|
|
3451 }
|
|
|
3452
|
|
|
3453 /* Build the complete list of annotations appropriate for writing out
|
|
|
3454 the text between START and END, by calling all the functions in
|
|
|
3455 write-region-annotate-functions and merging the lists they return.
|
|
|
3456 If one of these functions switches to a different buffer, we assume
|
|
|
3457 that buffer contains altered text. Therefore, the caller must
|
|
|
3458 make sure to restore the current buffer in all cases,
|
|
|
3459 as save-excursion would do. */
|
|
|
3460
|
|
|
3461 static Lisp_Object
|
|
|
3462 build_annotations (Lisp_Object start, Lisp_Object end)
|
|
|
3463 {
|
|
|
3464 /* This function can GC */
|
|
|
3465 Lisp_Object annotations;
|
|
|
3466 Lisp_Object p, res;
|
|
|
3467 struct gcpro gcpro1, gcpro2;
|
|
|
3468 Lisp_Object original_buffer;
|
|
|
3469
|
|
|
3470 XSETBUFFER (original_buffer, current_buffer);
|
|
|
3471
|
|
|
3472 annotations = Qnil;
|
|
|
3473 p = Vwrite_region_annotate_functions;
|
|
|
3474 GCPRO2 (annotations, p);
|
|
|
3475 while (!NILP (p))
|
|
|
3476 {
|
|
|
3477 struct buffer *given_buffer = current_buffer;
|
|
|
3478 Vwrite_region_annotations_so_far = annotations;
|
|
|
3479 res = call2 (Fcar (p), start, end);
|
|
|
3480 /* If the function makes a different buffer current,
|
|
|
3481 assume that means this buffer contains altered text to be output.
|
|
|
3482 Reset START and END from the buffer bounds
|
|
|
3483 and discard all previous annotations because they should have
|
|
|
3484 been dealt with by this function. */
|
|
|
3485 if (current_buffer != given_buffer)
|
|
|
3486 {
|
|
|
3487 start = make_int (BUF_BEGV (current_buffer));
|
|
|
3488 end = make_int (BUF_ZV (current_buffer));
|
|
|
3489 annotations = Qnil;
|
|
|
3490 }
|
|
|
3491 Flength (res); /* Check basic validity of return value */
|
|
|
3492 annotations = merge (annotations, res, Qcar_less_than_car);
|
|
|
3493 p = Fcdr (p);
|
|
|
3494 }
|
|
|
3495
|
|
|
3496 /* Now do the same for annotation functions implied by the file-format */
|
|
|
3497 if (auto_saving && (!EQ (Vauto_save_file_format, Qt)))
|
|
|
3498 p = Vauto_save_file_format;
|
|
|
3499 else
|
|
|
3500 p = current_buffer->file_format;
|
|
|
3501 while (!NILP (p))
|
|
|
3502 {
|
|
|
3503 struct buffer *given_buffer = current_buffer;
|
|
|
3504 Vwrite_region_annotations_so_far = annotations;
|
|
|
3505 res = call4 (Qformat_annotate_function, Fcar (p), start, end,
|
|
|
3506 original_buffer);
|
|
|
3507 if (current_buffer != given_buffer)
|
|
|
3508 {
|
|
|
3509 start = make_int (BUF_BEGV (current_buffer));
|
|
|
3510 end = make_int (BUF_ZV (current_buffer));
|
|
|
3511 annotations = Qnil;
|
|
|
3512 }
|
|
|
3513 Flength (res);
|
|
|
3514 annotations = merge (annotations, res, Qcar_less_than_car);
|
|
|
3515 p = Fcdr (p);
|
|
|
3516 }
|
|
|
3517 UNGCPRO;
|
|
|
3518 return annotations;
|
|
|
3519 }
|
|
|
3520
|
|
|
3521 /* Write to stream OUTSTREAM the characters from INSTREAM (it is read until
|
|
|
3522 EOF is encountered), assuming they start at position POS in the buffer
|
|
|
3523 of string that STREAM refers to. Intersperse with them the annotations
|
|
|
3524 from *ANNOT that fall into the range of positions we are reading from,
|
|
|
3525 each at its appropriate position.
|
|
|
3526
|
|
|
3527 Modify *ANNOT by discarding elements as we output them.
|
|
|
3528 The return value is negative in case of system call failure. */
|
|
|
3529
|
|
|
3530 /* 4K should probably be fine. We just need to reduce the number of
|
|
|
3531 function calls to reasonable level. The Lstream stuff itself will
|
|
|
3532 batch to 64K to reduce the number of system calls. */
|
|
|
3533
|
|
|
3534 #define A_WRITE_BATCH_SIZE 4096
|
|
|
3535
|
|
|
3536 static int
|
|
|
3537 a_write (Lisp_Object outstream, Lisp_Object instream, int pos,
|
|
|
3538 Lisp_Object *annot)
|
|
|
3539 {
|
|
|
3540 Lisp_Object tem;
|
|
|
3541 int nextpos;
|
|
|
3542 unsigned char largebuf[A_WRITE_BATCH_SIZE];
|
|
|
3543 Lstream *instr = XLSTREAM (instream);
|
|
|
3544 Lstream *outstr = XLSTREAM (outstream);
|
|
|
3545
|
|
|
3546 while (LISTP (*annot))
|
|
|
3547 {
|
|
|
3548 tem = Fcar_safe (Fcar (*annot));
|
|
|
3549 if (INTP (tem))
|
|
|
3550 nextpos = XINT (tem);
|
|
|
3551 else
|
|
|
3552 nextpos = INT_MAX;
|
|
|
3553 #ifdef MULE
|
|
|
3554 /* If there are annotations left and we have Mule, then we
|
|
|
3555 have to do the I/O one emchar at a time so we can
|
|
|
3556 determine when to insert the annotation. */
|
|
|
3557 if (!NILP (*annot))
|
|
|
3558 {
|
|
|
3559 Emchar ch;
|
|
|
3560 while (pos != nextpos && (ch = Lstream_get_emchar (instr)) != EOF)
|
|
|
3561 {
|
|
|
3562 if (Lstream_put_emchar (outstr, ch) < 0)
|
|
|
3563 return -1;
|
|
|
3564 pos++;
|
|
|
3565 }
|
|
|
3566 }
|
|
|
3567 else
|
|
|
3568 #endif /* MULE */
|
|
|
3569 {
|
|
|
3570 while (pos != nextpos)
|
|
|
3571 {
|
|
|
3572 /* Otherwise there is no point to that. Just go in batches. */
|
|
|
3573 int chunk = min (nextpos - pos, A_WRITE_BATCH_SIZE);
|
|
|
3574
|
|
|
3575 chunk = Lstream_read (instr, largebuf, chunk);
|
|
|
3576 if (chunk < 0)
|
|
|
3577 return -1;
|
|
|
3578 if (chunk == 0) /* EOF */
|
|
|
3579 break;
|
|
|
3580 if (Lstream_write (outstr, largebuf, chunk) < chunk)
|
|
|
3581 return -1;
|
|
|
3582 pos += chunk;
|
|
|
3583 }
|
|
|
3584 }
|
|
|
3585 if (pos == nextpos)
|
|
|
3586 {
|
|
|
3587 tem = Fcdr (Fcar (*annot));
|
|
|
3588 if (STRINGP (tem))
|
|
|
3589 {
|
|
|
3590 if (Lstream_write (outstr, XSTRING_DATA (tem),
|
|
|
3591 XSTRING_LENGTH (tem)) < 0)
|
|
|
3592 return -1;
|
|
|
3593 }
|
|
|
3594 *annot = Fcdr (*annot);
|
|
|
3595 }
|
|
|
3596 else
|
|
|
3597 return 0;
|
|
|
3598 }
|
|
|
3599 return -1;
|
|
|
3600 }
|
|
|
3601
|
|
|
3602
|
|
|
3603
|
|
|
3604 #if 0
|
|
|
3605 #include <des_crypt.h>
|
|
|
3606
|
|
|
3607 #define CRYPT_BLOCK_SIZE 8 /* bytes */
|
|
|
3608 #define CRYPT_KEY_SIZE 8 /* bytes */
|
|
|
3609
|
|
|
3610 DEFUN ("encrypt-string", Fencrypt_string, 2, 2, 0, /*
|
|
|
3611 Encrypt STRING using KEY.
|
|
|
3612 */
|
|
|
3613 (string, key))
|
|
|
3614 {
|
|
|
3615 char *encrypted_string, *raw_key;
|
|
|
3616 int rounded_size, extra, key_size;
|
|
|
3617
|
|
|
3618 /* !!#### May produce bogus data under Mule. */
|
|
|
3619 CHECK_STRING (string);
|
|
|
3620 CHECK_STRING (key);
|
|
|
3621
|
|
|
3622 extra = XSTRING_LENGTH (string) % CRYPT_BLOCK_SIZE;
|
|
|
3623 rounded_size = XSTRING_LENGTH (string) + extra;
|
|
|
3624 encrypted_string = alloca (rounded_size + 1);
|
|
|
3625 memcpy (encrypted_string, XSTRING_DATA (string), XSTRING_LENGTH (string));
|
|
|
3626 memset (encrypted_string + rounded_size - extra, 0, extra + 1);
|
|
|
3627
|
|
|
3628 key_size = min (CRYPT_KEY_SIZE, XSTRING_LENGTH (key))
|
|
|
3629
|
|
|
3630 raw_key = alloca (CRYPT_KEY_SIZE + 1);
|
|
|
3631 memcpy (raw_key, XSTRING_DATA (key), key_size);
|
|
|
3632 memset (raw_key + key_size, 0, (CRYPT_KEY_SIZE + 1) - key_size);
|
|
|
3633
|
|
|
3634 ecb_crypt (raw_key, encrypted_string, rounded_size,
|
|
|
3635 DES_ENCRYPT | DES_SW);
|
|
|
3636 return make_string (encrypted_string, rounded_size);
|
|
|
3637 }
|
|
|
3638
|
|
|
3639 DEFUN ("decrypt-string", Fdecrypt_string, 2, 2, 0, /*
|
|
|
3640 Decrypt STRING using KEY.
|
|
|
3641 */
|
|
|
3642 (string, key))
|
|
|
3643 {
|
|
|
3644 char *decrypted_string, *raw_key;
|
|
|
3645 int string_size, key_size;
|
|
|
3646
|
|
|
3647 CHECK_STRING (string);
|
|
|
3648 CHECK_STRING (key);
|
|
|
3649
|
|
|
3650 string_size = XSTRING_LENGTH (string) + 1;
|
|
|
3651 decrypted_string = alloca (string_size);
|
|
|
3652 memcpy (decrypted_string, XSTRING_DATA (string), string_size);
|
|
|
3653 decrypted_string[string_size - 1] = '\0';
|
|
|
3654
|
|
|
3655 key_size = min (CRYPT_KEY_SIZE, XSTRING_LENGTH (key))
|
|
|
3656
|
|
|
3657 raw_key = alloca (CRYPT_KEY_SIZE + 1);
|
|
|
3658 memcpy (raw_key, XSTRING_DATA (key), key_size);
|
|
|
3659 memset (raw_key + key_size, 0, (CRYPT_KEY_SIZE + 1) - key_size);
|
|
|
3660
|
|
|
3661
|
|
|
3662 ecb_crypt (raw_key, decrypted_string, string_size, D | DES_SW);
|
|
|
3663 return make_string (decrypted_string, string_size - 1);
|
|
|
3664 }
|
|
|
3665 #endif /* 0 */
|
|
|
3666
|
|
|
3667
|
|
|
3668 DEFUN ("verify-visited-file-modtime", Fverify_visited_file_modtime, 1, 1, 0, /*
|
|
444
|
3669 Return t if last mod time of BUFFER's visited file matches what BUFFER records.
|
|
428
|
3670 This means that the file has not been changed since it was visited or saved.
|
|
|
3671 */
|
|
444
|
3672 (buffer))
|
|
428
|
3673 {
|
|
442
|
3674 /* This function can call lisp; GC checked 2000-07-11 ben */
|
|
428
|
3675 struct buffer *b;
|
|
|
3676 struct stat st;
|
|
|
3677 Lisp_Object handler;
|
|
|
3678
|
|
444
|
3679 CHECK_BUFFER (buffer);
|
|
|
3680 b = XBUFFER (buffer);
|
|
428
|
3681
|
|
|
3682 if (!STRINGP (b->filename)) return Qt;
|
|
|
3683 if (b->modtime == 0) return Qt;
|
|
|
3684
|
|
|
3685 /* If the file name has special constructs in it,
|
|
|
3686 call the corresponding file handler. */
|
|
|
3687 handler = Ffind_file_name_handler (b->filename,
|
|
|
3688 Qverify_visited_file_modtime);
|
|
|
3689 if (!NILP (handler))
|
|
444
|
3690 return call2 (handler, Qverify_visited_file_modtime, buffer);
|
|
428
|
3691
|
|
442
|
3692 if (xemacs_stat ((char *) XSTRING_DATA (b->filename), &st) < 0)
|
|
428
|
3693 {
|
|
|
3694 /* If the file doesn't exist now and didn't exist before,
|
|
|
3695 we say that it isn't modified, provided the error is a tame one. */
|
|
|
3696 if (errno == ENOENT || errno == EACCES || errno == ENOTDIR)
|
|
|
3697 st.st_mtime = -1;
|
|
|
3698 else
|
|
|
3699 st.st_mtime = 0;
|
|
|
3700 }
|
|
|
3701 if (st.st_mtime == b->modtime
|
|
|
3702 /* If both are positive, accept them if they are off by one second. */
|
|
|
3703 || (st.st_mtime > 0 && b->modtime > 0
|
|
|
3704 && (st.st_mtime == b->modtime + 1
|
|
|
3705 || st.st_mtime == b->modtime - 1)))
|
|
|
3706 return Qt;
|
|
|
3707 return Qnil;
|
|
|
3708 }
|
|
|
3709
|
|
|
3710 DEFUN ("clear-visited-file-modtime", Fclear_visited_file_modtime, 0, 0, 0, /*
|
|
|
3711 Clear out records of last mod time of visited file.
|
|
|
3712 Next attempt to save will certainly not complain of a discrepancy.
|
|
|
3713 */
|
|
|
3714 ())
|
|
|
3715 {
|
|
|
3716 current_buffer->modtime = 0;
|
|
|
3717 return Qnil;
|
|
|
3718 }
|
|
|
3719
|
|
|
3720 DEFUN ("visited-file-modtime", Fvisited_file_modtime, 0, 0, 0, /*
|
|
|
3721 Return the current buffer's recorded visited file modification time.
|
|
|
3722 The value is a list of the form (HIGH . LOW), like the time values
|
|
|
3723 that `file-attributes' returns.
|
|
|
3724 */
|
|
|
3725 ())
|
|
|
3726 {
|
|
|
3727 return time_to_lisp ((time_t) current_buffer->modtime);
|
|
|
3728 }
|
|
|
3729
|
|
|
3730 DEFUN ("set-visited-file-modtime", Fset_visited_file_modtime, 0, 1, 0, /*
|
|
|
3731 Update buffer's recorded modification time from the visited file's time.
|
|
|
3732 Useful if the buffer was not read from the file normally
|
|
|
3733 or if the file itself has been changed for some known benign reason.
|
|
|
3734 An argument specifies the modification time value to use
|
|
|
3735 \(instead of that of the visited file), in the form of a list
|
|
|
3736 \(HIGH . LOW) or (HIGH LOW).
|
|
|
3737 */
|
|
|
3738 (time_list))
|
|
|
3739 {
|
|
|
3740 /* This function can call lisp */
|
|
|
3741 if (!NILP (time_list))
|
|
|
3742 {
|
|
|
3743 time_t the_time;
|
|
|
3744 lisp_to_time (time_list, &the_time);
|
|
|
3745 current_buffer->modtime = (int) the_time;
|
|
|
3746 }
|
|
|
3747 else
|
|
|
3748 {
|
|
446
|
3749 Lisp_Object filename = Qnil;
|
|
428
|
3750 struct stat st;
|
|
|
3751 Lisp_Object handler;
|
|
|
3752 struct gcpro gcpro1, gcpro2, gcpro3;
|
|
|
3753
|
|
|
3754 GCPRO3 (filename, time_list, current_buffer->filename);
|
|
|
3755 filename = Fexpand_file_name (current_buffer->filename, Qnil);
|
|
|
3756
|
|
|
3757 /* If the file name has special constructs in it,
|
|
|
3758 call the corresponding file handler. */
|
|
|
3759 handler = Ffind_file_name_handler (filename, Qset_visited_file_modtime);
|
|
|
3760 UNGCPRO;
|
|
|
3761 if (!NILP (handler))
|
|
|
3762 /* The handler can find the file name the same way we did. */
|
|
|
3763 return call2 (handler, Qset_visited_file_modtime, Qnil);
|
|
442
|
3764 else if (xemacs_stat ((char *) XSTRING_DATA (filename), &st) >= 0)
|
|
428
|
3765 current_buffer->modtime = st.st_mtime;
|
|
|
3766 }
|
|
|
3767
|
|
|
3768 return Qnil;
|
|
|
3769 }
|
|
|
3770
|
|
|
3771 static Lisp_Object
|
|
|
3772 auto_save_error (Lisp_Object condition_object, Lisp_Object ignored)
|
|
|
3773 {
|
|
|
3774 /* This function can call lisp */
|
|
|
3775 if (gc_in_progress)
|
|
|
3776 return Qnil;
|
|
|
3777 /* Don't try printing an error message after everything is gone! */
|
|
|
3778 if (preparing_for_armageddon)
|
|
|
3779 return Qnil;
|
|
|
3780 clear_echo_area (selected_frame (), Qauto_saving, 1);
|
|
|
3781 Fding (Qt, Qauto_save_error, Qnil);
|
|
|
3782 message ("Auto-saving...error for %s", XSTRING_DATA (current_buffer->name));
|
|
|
3783 Fsleep_for (make_int (1));
|
|
|
3784 message ("Auto-saving...error!for %s", XSTRING_DATA (current_buffer->name));
|
|
|
3785 Fsleep_for (make_int (1));
|
|
|
3786 message ("Auto-saving...error for %s", XSTRING_DATA (current_buffer->name));
|
|
|
3787 Fsleep_for (make_int (1));
|
|
|
3788 return Qnil;
|
|
|
3789 }
|
|
|
3790
|
|
|
3791 static Lisp_Object
|
|
|
3792 auto_save_1 (Lisp_Object ignored)
|
|
|
3793 {
|
|
|
3794 /* This function can call lisp */
|
|
|
3795 /* #### I think caller is protecting current_buffer? */
|
|
|
3796 struct stat st;
|
|
|
3797 Lisp_Object fn = current_buffer->filename;
|
|
|
3798 Lisp_Object a = current_buffer->auto_save_file_name;
|
|
|
3799
|
|
|
3800 if (!STRINGP (a))
|
|
|
3801 return (Qnil);
|
|
|
3802
|
|
|
3803 /* Get visited file's mode to become the auto save file's mode. */
|
|
|
3804 if (STRINGP (fn) &&
|
|
442
|
3805 xemacs_stat ((char *) XSTRING_DATA (fn), &st) >= 0)
|
|
428
|
3806 /* But make sure we can overwrite it later! */
|
|
|
3807 auto_save_mode_bits = st.st_mode | 0600;
|
|
|
3808 else
|
|
|
3809 /* default mode for auto-save files of buffers with no file is
|
|
|
3810 readable by owner only. This may annoy some small number of
|
|
|
3811 people, but the alternative removes all privacy from email. */
|
|
|
3812 auto_save_mode_bits = 0600;
|
|
|
3813
|
|
|
3814 return
|
|
|
3815 /* !!#### need to deal with this 'escape-quoted everywhere */
|
|
|
3816 Fwrite_region_internal (Qnil, Qnil, a, Qnil, Qlambda, Qnil,
|
|
|
3817 #ifdef MULE
|
|
|
3818 Qescape_quoted
|
|
|
3819 #else
|
|
|
3820 Qnil
|
|
|
3821 #endif
|
|
|
3822 );
|
|
|
3823 }
|
|
|
3824
|
|
|
3825 static Lisp_Object
|
|
|
3826 auto_save_expand_name_error (Lisp_Object condition_object, Lisp_Object ignored)
|
|
|
3827 {
|
|
|
3828 /* #### this function should spew an error message about not being
|
|
|
3829 able to open the .saves file. */
|
|
|
3830 return Qnil;
|
|
|
3831 }
|
|
|
3832
|
|
|
3833 static Lisp_Object
|
|
|
3834 auto_save_expand_name (Lisp_Object name)
|
|
|
3835 {
|
|
|
3836 struct gcpro gcpro1;
|
|
|
3837
|
|
|
3838 /* note that caller did NOT gc protect name, so we do it. */
|
|
|
3839 /* #### dmoore - this might not be necessary, if condition_case_1
|
|
|
3840 protects it. but I don't think it does. */
|
|
|
3841 GCPRO1 (name);
|
|
|
3842 RETURN_UNGCPRO (Fexpand_file_name (name, Qnil));
|
|
|
3843 }
|
|
|
3844
|
|
|
3845
|
|
|
3846 static Lisp_Object
|
|
|
3847 do_auto_save_unwind (Lisp_Object fd)
|
|
|
3848 {
|
|
|
3849 close (XINT (fd));
|
|
|
3850 return (fd);
|
|
|
3851 }
|
|
|
3852
|
|
|
3853 static Lisp_Object
|
|
|
3854 do_auto_save_unwind_2 (Lisp_Object old_auto_saving)
|
|
|
3855 {
|
|
|
3856 auto_saving = XINT (old_auto_saving);
|
|
|
3857 return Qnil;
|
|
|
3858 }
|
|
|
3859
|
|
|
3860 /* Fdo_auto_save() checks whether a GC is in progress when it is called,
|
|
|
3861 and if so, tries to avoid touching lisp objects.
|
|
|
3862
|
|
|
3863 The only time that Fdo_auto_save() is called while GC is in progress
|
|
|
3864 is if we're going down, as a result of an abort() or a kill signal.
|
|
|
3865 It's fairly important that we generate autosave files in that case!
|
|
|
3866 */
|
|
|
3867
|
|
|
3868 DEFUN ("do-auto-save", Fdo_auto_save, 0, 2, "", /*
|
|
|
3869 Auto-save all buffers that need it.
|
|
|
3870 This is all buffers that have auto-saving enabled
|
|
|
3871 and are changed since last auto-saved.
|
|
|
3872 Auto-saving writes the buffer into a file
|
|
|
3873 so that your editing is not lost if the system crashes.
|
|
|
3874 This file is not the file you visited; that changes only when you save.
|
|
|
3875 Normally we run the normal hook `auto-save-hook' before saving.
|
|
|
3876
|
|
|
3877 Non-nil first argument means do not print any message if successful.
|
|
|
3878 Non-nil second argument means save only current buffer.
|
|
|
3879 */
|
|
|
3880 (no_message, current_only))
|
|
|
3881 {
|
|
|
3882 /* This function can call lisp */
|
|
|
3883 struct buffer *b;
|
|
|
3884 Lisp_Object tail, buf;
|
|
|
3885 int auto_saved = 0;
|
|
|
3886 int do_handled_files;
|
|
|
3887 Lisp_Object oquit = Qnil;
|
|
|
3888 Lisp_Object listfile = Qnil;
|
|
|
3889 Lisp_Object old;
|
|
|
3890 int listdesc = -1;
|
|
|
3891 int speccount = specpdl_depth ();
|
|
|
3892 struct gcpro gcpro1, gcpro2, gcpro3;
|
|
|
3893
|
|
|
3894 XSETBUFFER (old, current_buffer);
|
|
|
3895 GCPRO3 (oquit, listfile, old);
|
|
|
3896 check_quit (); /* make Vquit_flag accurate */
|
|
|
3897 /* Ordinarily don't quit within this function,
|
|
|
3898 but don't make it impossible to quit (in case we get hung in I/O). */
|
|
|
3899 oquit = Vquit_flag;
|
|
|
3900 Vquit_flag = Qnil;
|
|
|
3901
|
|
|
3902 /* No further GCPRO needed, because (when it matters) all Lisp_Object
|
|
|
3903 variables point to non-strings reached from Vbuffer_alist. */
|
|
|
3904
|
|
|
3905 if (minibuf_level != 0 || preparing_for_armageddon)
|
|
|
3906 no_message = Qt;
|
|
|
3907
|
|
|
3908 run_hook (Qauto_save_hook);
|
|
|
3909
|
|
|
3910 if (STRINGP (Vauto_save_list_file_name))
|
|
|
3911 listfile = condition_case_1 (Qt,
|
|
|
3912 auto_save_expand_name,
|
|
|
3913 Vauto_save_list_file_name,
|
|
|
3914 auto_save_expand_name_error, Qnil);
|
|
|
3915
|
|
|
3916 /* Make sure auto_saving is reset. */
|
|
|
3917 record_unwind_protect (do_auto_save_unwind_2, make_int (auto_saving));
|
|
|
3918
|
|
|
3919 auto_saving = 1;
|
|
|
3920
|
|
|
3921 /* First, save all files which don't have handlers. If Emacs is
|
|
|
3922 crashing, the handlers may tweak what is causing Emacs to crash
|
|
|
3923 in the first place, and it would be a shame if Emacs failed to
|
|
|
3924 autosave perfectly ordinary files because it couldn't handle some
|
|
|
3925 ange-ftp'd file. */
|
|
|
3926 for (do_handled_files = 0; do_handled_files < 2; do_handled_files++)
|
|
|
3927 {
|
|
|
3928 for (tail = Vbuffer_alist;
|
|
|
3929 CONSP (tail);
|
|
|
3930 tail = XCDR (tail))
|
|
|
3931 {
|
|
|
3932 buf = XCDR (XCAR (tail));
|
|
|
3933 b = XBUFFER (buf);
|
|
|
3934
|
|
|
3935 if (!NILP (current_only)
|
|
|
3936 && b != current_buffer)
|
|
|
3937 continue;
|
|
|
3938
|
|
|
3939 /* Don't auto-save indirect buffers.
|
|
|
3940 The base buffer takes care of it. */
|
|
|
3941 if (b->base_buffer)
|
|
|
3942 continue;
|
|
|
3943
|
|
|
3944 /* Check for auto save enabled
|
|
|
3945 and file changed since last auto save
|
|
|
3946 and file changed since last real save. */
|
|
|
3947 if (STRINGP (b->auto_save_file_name)
|
|
|
3948 && BUF_SAVE_MODIFF (b) < BUF_MODIFF (b)
|
|
|
3949 && b->auto_save_modified < BUF_MODIFF (b)
|
|
|
3950 /* -1 means we've turned off autosaving for a while--see below. */
|
|
|
3951 && XINT (b->saved_size) >= 0
|
|
|
3952 && (do_handled_files
|
|
|
3953 || NILP (Ffind_file_name_handler (b->auto_save_file_name,
|
|
|
3954 Qwrite_region))))
|
|
|
3955 {
|
|
|
3956 EMACS_TIME before_time, after_time;
|
|
|
3957
|
|
|
3958 EMACS_GET_TIME (before_time);
|
|
|
3959 /* If we had a failure, don't try again for 20 minutes. */
|
|
|
3960 if (!preparing_for_armageddon
|
|
|
3961 && b->auto_save_failure_time >= 0
|
|
|
3962 && (EMACS_SECS (before_time) - b->auto_save_failure_time <
|
|
|
3963 1200))
|
|
|
3964 continue;
|
|
|
3965
|
|
|
3966 if (!preparing_for_armageddon &&
|
|
|
3967 (XINT (b->saved_size) * 10
|
|
|
3968 > (BUF_Z (b) - BUF_BEG (b)) * 13)
|
|
|
3969 /* A short file is likely to change a large fraction;
|
|
|
3970 spare the user annoying messages. */
|
|
|
3971 && XINT (b->saved_size) > 5000
|
|
|
3972 /* These messages are frequent and annoying for `*mail*'. */
|
|
|
3973 && !NILP (b->filename)
|
|
|
3974 && NILP (no_message)
|
|
|
3975 && disable_auto_save_when_buffer_shrinks)
|
|
|
3976 {
|
|
|
3977 /* It has shrunk too much; turn off auto-saving here.
|
|
|
3978 Unless we're about to crash, in which case auto-save it
|
|
|
3979 anyway.
|
|
|
3980 */
|
|
|
3981 message
|
|
|
3982 ("Buffer %s has shrunk a lot; auto save turned off there",
|
|
|
3983 XSTRING_DATA (b->name));
|
|
|
3984 /* Turn off auto-saving until there's a real save,
|
|
|
3985 and prevent any more warnings. */
|
|
|
3986 b->saved_size = make_int (-1);
|
|
|
3987 if (!gc_in_progress)
|
|
|
3988 Fsleep_for (make_int (1));
|
|
|
3989 continue;
|
|
|
3990 }
|
|
|
3991 set_buffer_internal (b);
|
|
|
3992 if (!auto_saved && NILP (no_message))
|
|
|
3993 {
|
|
442
|
3994 static const unsigned char *msg
|
|
|
3995 = (const unsigned char *) "Auto-saving...";
|
|
428
|
3996 echo_area_message (selected_frame (), msg, Qnil,
|
|
442
|
3997 0, strlen ((const char *) msg),
|
|
428
|
3998 Qauto_saving);
|
|
|
3999 }
|
|
|
4000
|
|
|
4001 /* Open the auto-save list file, if necessary.
|
|
|
4002 We only do this now so that the file only exists
|
|
|
4003 if we actually auto-saved any files. */
|
|
444
|
4004 if (!auto_saved && !inhibit_auto_save_session
|
|
|
4005 && !NILP (Vauto_save_list_file_prefix)
|
|
|
4006 && STRINGP (listfile) && listdesc < 0)
|
|
428
|
4007 {
|
|
|
4008 listdesc = open ((char *) XSTRING_DATA (listfile),
|
|
|
4009 O_WRONLY | O_TRUNC | O_CREAT | OPEN_BINARY,
|
|
|
4010 CREAT_MODE);
|
|
|
4011
|
|
|
4012 /* Arrange to close that file whether or not we get
|
|
|
4013 an error. */
|
|
|
4014 if (listdesc >= 0)
|
|
|
4015 record_unwind_protect (do_auto_save_unwind,
|
|
|
4016 make_int (listdesc));
|
|
|
4017 }
|
|
|
4018
|
|
|
4019 /* Record all the buffers that we are auto-saving in
|
|
|
4020 the special file that lists them. For each of
|
|
|
4021 these buffers, record visited name (if any) and
|
|
|
4022 auto save name. */
|
|
|
4023 if (listdesc >= 0)
|
|
|
4024 {
|
|
442
|
4025 const Extbyte *auto_save_file_name_ext;
|
|
428
|
4026 Extcount auto_save_file_name_ext_len;
|
|
|
4027
|
|
440
|
4028 TO_EXTERNAL_FORMAT (LISP_STRING, b->auto_save_file_name,
|
|
|
4029 ALLOCA, (auto_save_file_name_ext,
|
|
|
4030 auto_save_file_name_ext_len),
|
|
|
4031 Qfile_name);
|
|
428
|
4032 if (!NILP (b->filename))
|
|
|
4033 {
|
|
442
|
4034 const Extbyte *filename_ext;
|
|
428
|
4035 Extcount filename_ext_len;
|
|
|
4036
|
|
440
|
4037 TO_EXTERNAL_FORMAT (LISP_STRING, b->filename,
|
|
|
4038 ALLOCA, (filename_ext,
|
|
|
4039 filename_ext_len),
|
|
|
4040 Qfile_name);
|
|
428
|
4041 write (listdesc, filename_ext, filename_ext_len);
|
|
|
4042 }
|
|
|
4043 write (listdesc, "\n", 1);
|
|
|
4044 write (listdesc, auto_save_file_name_ext,
|
|
|
4045 auto_save_file_name_ext_len);
|
|
|
4046 write (listdesc, "\n", 1);
|
|
|
4047 }
|
|
|
4048
|
|
|
4049 /* dmoore - In a bad scenario we've set b=XBUFFER(buf)
|
|
|
4050 based on values in Vbuffer_alist. auto_save_1 may
|
|
|
4051 cause lisp handlers to run. Those handlers may kill
|
|
|
4052 the buffer and then GC. Since the buffer is killed,
|
|
|
4053 it's no longer in Vbuffer_alist so it might get reaped
|
|
|
4054 by the GC. We also need to protect tail. */
|
|
|
4055 /* #### There is probably a lot of other code which has
|
|
|
4056 pointers into buffers which may get blown away by
|
|
|
4057 handlers. */
|
|
|
4058 {
|
|
|
4059 struct gcpro ngcpro1, ngcpro2;
|
|
|
4060 NGCPRO2 (buf, tail);
|
|
|
4061 condition_case_1 (Qt,
|
|
|
4062 auto_save_1, Qnil,
|
|
|
4063 auto_save_error, Qnil);
|
|
|
4064 NUNGCPRO;
|
|
|
4065 }
|
|
|
4066 /* Handler killed our saved current-buffer! Pick any. */
|
|
|
4067 if (!BUFFER_LIVE_P (XBUFFER (old)))
|
|
|
4068 XSETBUFFER (old, current_buffer);
|
|
|
4069
|
|
|
4070 set_buffer_internal (XBUFFER (old));
|
|
|
4071 auto_saved++;
|
|
|
4072
|
|
|
4073 /* Handler killed their own buffer! */
|
|
|
4074 if (!BUFFER_LIVE_P(b))
|
|
|
4075 continue;
|
|
|
4076
|
|
|
4077 b->auto_save_modified = BUF_MODIFF (b);
|
|
|
4078 b->saved_size = make_int (BUF_SIZE (b));
|
|
|
4079 EMACS_GET_TIME (after_time);
|
|
|
4080 /* If auto-save took more than 60 seconds,
|
|
|
4081 assume it was an NFS failure that got a timeout. */
|
|
|
4082 if (EMACS_SECS (after_time) - EMACS_SECS (before_time) > 60)
|
|
|
4083 b->auto_save_failure_time = EMACS_SECS (after_time);
|
|
|
4084 }
|
|
|
4085 }
|
|
|
4086 }
|
|
|
4087
|
|
|
4088 /* Prevent another auto save till enough input events come in. */
|
|
|
4089 if (auto_saved)
|
|
|
4090 record_auto_save ();
|
|
|
4091
|
|
|
4092 /* If we didn't save anything into the listfile, remove the old
|
|
|
4093 one because nothing needed to be auto-saved. Do this afterwards
|
|
|
4094 rather than before in case we get a crash attempting to autosave
|
|
|
4095 (in that case we'd still want the old one around). */
|
|
|
4096 if (listdesc < 0 && !auto_saved && STRINGP (listfile))
|
|
|
4097 unlink ((char *) XSTRING_DATA (listfile));
|
|
|
4098
|
|
|
4099 /* Show "...done" only if the echo area would otherwise be empty. */
|
|
|
4100 if (auto_saved && NILP (no_message)
|
|
|
4101 && NILP (clear_echo_area (selected_frame (), Qauto_saving, 0)))
|
|
|
4102 {
|
|
442
|
4103 static const unsigned char *msg
|
|
|
4104 = (const unsigned char *)"Auto-saving...done";
|
|
428
|
4105 echo_area_message (selected_frame (), msg, Qnil, 0,
|
|
442
|
4106 strlen ((const char *) msg), Qauto_saving);
|
|
428
|
4107 }
|
|
|
4108
|
|
|
4109 Vquit_flag = oquit;
|
|
|
4110
|
|
|
4111 RETURN_UNGCPRO (unbind_to (speccount, Qnil));
|
|
|
4112 }
|
|
|
4113
|
|
|
4114 DEFUN ("set-buffer-auto-saved", Fset_buffer_auto_saved, 0, 0, 0, /*
|
|
|
4115 Mark current buffer as auto-saved with its current text.
|
|
|
4116 No auto-save file will be written until the buffer changes again.
|
|
|
4117 */
|
|
|
4118 ())
|
|
|
4119 {
|
|
|
4120 current_buffer->auto_save_modified = BUF_MODIFF (current_buffer);
|
|
|
4121 current_buffer->saved_size = make_int (BUF_SIZE (current_buffer));
|
|
|
4122 current_buffer->auto_save_failure_time = -1;
|
|
|
4123 return Qnil;
|
|
|
4124 }
|
|
|
4125
|
|
|
4126 DEFUN ("clear-buffer-auto-save-failure", Fclear_buffer_auto_save_failure, 0, 0, 0, /*
|
|
|
4127 Clear any record of a recent auto-save failure in the current buffer.
|
|
|
4128 */
|
|
|
4129 ())
|
|
|
4130 {
|
|
|
4131 current_buffer->auto_save_failure_time = -1;
|
|
|
4132 return Qnil;
|
|
|
4133 }
|
|
|
4134
|
|
|
4135 DEFUN ("recent-auto-save-p", Frecent_auto_save_p, 0, 0, 0, /*
|
|
|
4136 Return t if buffer has been auto-saved since last read in or saved.
|
|
|
4137 */
|
|
|
4138 ())
|
|
|
4139 {
|
|
|
4140 return (BUF_SAVE_MODIFF (current_buffer) <
|
|
|
4141 current_buffer->auto_save_modified) ? Qt : Qnil;
|
|
|
4142 }
|
|
|
4143
|
|
|
4144
|
|
|
4145 /************************************************************************/
|
|
|
4146 /* initialization */
|
|
|
4147 /************************************************************************/
|
|
|
4148
|
|
|
4149 void
|
|
|
4150 syms_of_fileio (void)
|
|
|
4151 {
|
|
|
4152 defsymbol (&Qexpand_file_name, "expand-file-name");
|
|
|
4153 defsymbol (&Qfile_truename, "file-truename");
|
|
|
4154 defsymbol (&Qsubstitute_in_file_name, "substitute-in-file-name");
|
|
|
4155 defsymbol (&Qdirectory_file_name, "directory-file-name");
|
|
|
4156 defsymbol (&Qfile_name_directory, "file-name-directory");
|
|
|
4157 defsymbol (&Qfile_name_nondirectory, "file-name-nondirectory");
|
|
|
4158 defsymbol (&Qunhandled_file_name_directory, "unhandled-file-name-directory");
|
|
|
4159 defsymbol (&Qfile_name_as_directory, "file-name-as-directory");
|
|
|
4160 defsymbol (&Qcopy_file, "copy-file");
|
|
|
4161 defsymbol (&Qmake_directory_internal, "make-directory-internal");
|
|
|
4162 defsymbol (&Qdelete_directory, "delete-directory");
|
|
|
4163 defsymbol (&Qdelete_file, "delete-file");
|
|
|
4164 defsymbol (&Qrename_file, "rename-file");
|
|
|
4165 defsymbol (&Qadd_name_to_file, "add-name-to-file");
|
|
|
4166 defsymbol (&Qmake_symbolic_link, "make-symbolic-link");
|
|
|
4167 defsymbol (&Qfile_exists_p, "file-exists-p");
|
|
|
4168 defsymbol (&Qfile_executable_p, "file-executable-p");
|
|
|
4169 defsymbol (&Qfile_readable_p, "file-readable-p");
|
|
|
4170 defsymbol (&Qfile_symlink_p, "file-symlink-p");
|
|
|
4171 defsymbol (&Qfile_writable_p, "file-writable-p");
|
|
|
4172 defsymbol (&Qfile_directory_p, "file-directory-p");
|
|
|
4173 defsymbol (&Qfile_regular_p, "file-regular-p");
|
|
|
4174 defsymbol (&Qfile_accessible_directory_p, "file-accessible-directory-p");
|
|
|
4175 defsymbol (&Qfile_modes, "file-modes");
|
|
|
4176 defsymbol (&Qset_file_modes, "set-file-modes");
|
|
|
4177 defsymbol (&Qfile_newer_than_file_p, "file-newer-than-file-p");
|
|
|
4178 defsymbol (&Qinsert_file_contents, "insert-file-contents");
|
|
|
4179 defsymbol (&Qwrite_region, "write-region");
|
|
|
4180 defsymbol (&Qverify_visited_file_modtime, "verify-visited-file-modtime");
|
|
|
4181 defsymbol (&Qset_visited_file_modtime, "set-visited-file-modtime");
|
|
|
4182 defsymbol (&Qcar_less_than_car, "car-less-than-car"); /* Vomitous! */
|
|
|
4183
|
|
|
4184 defsymbol (&Qauto_save_hook, "auto-save-hook");
|
|
|
4185 defsymbol (&Qauto_save_error, "auto-save-error");
|
|
|
4186 defsymbol (&Qauto_saving, "auto-saving");
|
|
|
4187
|
|
|
4188 defsymbol (&Qformat_decode, "format-decode");
|
|
|
4189 defsymbol (&Qformat_annotate_function, "format-annotate-function");
|
|
|
4190
|
|
|
4191 defsymbol (&Qcompute_buffer_file_truename, "compute-buffer-file-truename");
|
|
442
|
4192 DEFERROR_STANDARD (Qfile_error, Qio_error);
|
|
|
4193 DEFERROR_STANDARD (Qfile_already_exists, Qfile_error);
|
|
428
|
4194
|
|
|
4195 DEFSUBR (Ffind_file_name_handler);
|
|
|
4196
|
|
|
4197 DEFSUBR (Ffile_name_directory);
|
|
|
4198 DEFSUBR (Ffile_name_nondirectory);
|
|
|
4199 DEFSUBR (Funhandled_file_name_directory);
|
|
|
4200 DEFSUBR (Ffile_name_as_directory);
|
|
|
4201 DEFSUBR (Fdirectory_file_name);
|
|
|
4202 DEFSUBR (Fmake_temp_name);
|
|
|
4203 DEFSUBR (Fexpand_file_name);
|
|
|
4204 DEFSUBR (Ffile_truename);
|
|
|
4205 DEFSUBR (Fsubstitute_in_file_name);
|
|
|
4206 DEFSUBR (Fcopy_file);
|
|
|
4207 DEFSUBR (Fmake_directory_internal);
|
|
|
4208 DEFSUBR (Fdelete_directory);
|
|
|
4209 DEFSUBR (Fdelete_file);
|
|
|
4210 DEFSUBR (Frename_file);
|
|
|
4211 DEFSUBR (Fadd_name_to_file);
|
|
|
4212 DEFSUBR (Fmake_symbolic_link);
|
|
|
4213 #ifdef HPUX_NET
|
|
|
4214 DEFSUBR (Fsysnetunam);
|
|
|
4215 #endif /* HPUX_NET */
|
|
|
4216 DEFSUBR (Ffile_name_absolute_p);
|
|
|
4217 DEFSUBR (Ffile_exists_p);
|
|
|
4218 DEFSUBR (Ffile_executable_p);
|
|
|
4219 DEFSUBR (Ffile_readable_p);
|
|
|
4220 DEFSUBR (Ffile_writable_p);
|
|
|
4221 DEFSUBR (Ffile_symlink_p);
|
|
|
4222 DEFSUBR (Ffile_directory_p);
|
|
|
4223 DEFSUBR (Ffile_accessible_directory_p);
|
|
|
4224 DEFSUBR (Ffile_regular_p);
|
|
|
4225 DEFSUBR (Ffile_modes);
|
|
|
4226 DEFSUBR (Fset_file_modes);
|
|
|
4227 DEFSUBR (Fset_default_file_modes);
|
|
|
4228 DEFSUBR (Fdefault_file_modes);
|
|
|
4229 DEFSUBR (Funix_sync);
|
|
|
4230 DEFSUBR (Ffile_newer_than_file_p);
|
|
|
4231 DEFSUBR (Finsert_file_contents_internal);
|
|
|
4232 DEFSUBR (Fwrite_region_internal);
|
|
|
4233 DEFSUBR (Fcar_less_than_car); /* Vomitous! */
|
|
|
4234 DEFSUBR (Fcdr_less_than_cdr); /* Yeah oh yeah bucko .... */
|
|
|
4235 #if 0
|
|
|
4236 DEFSUBR (Fencrypt_string);
|
|
|
4237 DEFSUBR (Fdecrypt_string);
|
|
|
4238 #endif
|
|
|
4239 DEFSUBR (Fverify_visited_file_modtime);
|
|
|
4240 DEFSUBR (Fclear_visited_file_modtime);
|
|
|
4241 DEFSUBR (Fvisited_file_modtime);
|
|
|
4242 DEFSUBR (Fset_visited_file_modtime);
|
|
|
4243
|
|
|
4244 DEFSUBR (Fdo_auto_save);
|
|
|
4245 DEFSUBR (Fset_buffer_auto_saved);
|
|
|
4246 DEFSUBR (Fclear_buffer_auto_save_failure);
|
|
|
4247 DEFSUBR (Frecent_auto_save_p);
|
|
|
4248 }
|
|
|
4249
|
|
|
4250 void
|
|
|
4251 vars_of_fileio (void)
|
|
|
4252 {
|
|
|
4253 DEFVAR_LISP ("auto-save-file-format", &Vauto_save_file_format /*
|
|
|
4254 *Format in which to write auto-save files.
|
|
|
4255 Should be a list of symbols naming formats that are defined in `format-alist'.
|
|
|
4256 If it is t, which is the default, auto-save files are written in the
|
|
|
4257 same format as a regular save would use.
|
|
|
4258 */ );
|
|
|
4259 Vauto_save_file_format = Qt;
|
|
|
4260
|
|
|
4261 DEFVAR_LISP ("file-name-handler-alist", &Vfile_name_handler_alist /*
|
|
|
4262 *Alist of elements (REGEXP . HANDLER) for file names handled specially.
|
|
|
4263 If a file name matches REGEXP, then all I/O on that file is done by calling
|
|
|
4264 HANDLER.
|
|
|
4265
|
|
|
4266 The first argument given to HANDLER is the name of the I/O primitive
|
|
|
4267 to be handled; the remaining arguments are the arguments that were
|
|
|
4268 passed to that primitive. For example, if you do
|
|
|
4269 (file-exists-p FILENAME)
|
|
|
4270 and FILENAME is handled by HANDLER, then HANDLER is called like this:
|
|
|
4271 (funcall HANDLER 'file-exists-p FILENAME)
|
|
|
4272 The function `find-file-name-handler' checks this list for a handler
|
|
|
4273 for its argument.
|
|
|
4274 */ );
|
|
|
4275 Vfile_name_handler_alist = Qnil;
|
|
|
4276
|
|
|
4277 DEFVAR_LISP ("after-insert-file-functions", &Vafter_insert_file_functions /*
|
|
|
4278 A list of functions to be called at the end of `insert-file-contents'.
|
|
|
4279 Each is passed one argument, the number of bytes inserted. It should return
|
|
|
4280 the new byte count, and leave point the same. If `insert-file-contents' is
|
|
|
4281 intercepted by a handler from `file-name-handler-alist', that handler is
|
|
|
4282 responsible for calling the after-insert-file-functions if appropriate.
|
|
|
4283 */ );
|
|
|
4284 Vafter_insert_file_functions = Qnil;
|
|
|
4285
|
|
|
4286 DEFVAR_LISP ("write-region-annotate-functions",
|
|
|
4287 &Vwrite_region_annotate_functions /*
|
|
|
4288 A list of functions to be called at the start of `write-region'.
|
|
|
4289 Each is passed two arguments, START and END, as for `write-region'.
|
|
|
4290 It should return a list of pairs (POSITION . STRING) of strings to be
|
|
|
4291 effectively inserted at the specified positions of the file being written
|
|
|
4292 \(1 means to insert before the first byte written). The POSITIONs must be
|
|
|
4293 sorted into increasing order. If there are several functions in the list,
|
|
|
4294 the several lists are merged destructively.
|
|
|
4295 */ );
|
|
|
4296 Vwrite_region_annotate_functions = Qnil;
|
|
|
4297
|
|
|
4298 DEFVAR_LISP ("write-region-annotations-so-far",
|
|
|
4299 &Vwrite_region_annotations_so_far /*
|
|
|
4300 When an annotation function is called, this holds the previous annotations.
|
|
|
4301 These are the annotations made by other annotation functions
|
|
|
4302 that were already called. See also `write-region-annotate-functions'.
|
|
|
4303 */ );
|
|
|
4304 Vwrite_region_annotations_so_far = Qnil;
|
|
|
4305
|
|
|
4306 DEFVAR_LISP ("inhibit-file-name-handlers", &Vinhibit_file_name_handlers /*
|
|
|
4307 A list of file name handlers that temporarily should not be used.
|
|
|
4308 This applies only to the operation `inhibit-file-name-operation'.
|
|
|
4309 */ );
|
|
|
4310 Vinhibit_file_name_handlers = Qnil;
|
|
|
4311
|
|
|
4312 DEFVAR_LISP ("inhibit-file-name-operation", &Vinhibit_file_name_operation /*
|
|
|
4313 The operation for which `inhibit-file-name-handlers' is applicable.
|
|
|
4314 */ );
|
|
|
4315 Vinhibit_file_name_operation = Qnil;
|
|
|
4316
|
|
|
4317 DEFVAR_LISP ("auto-save-list-file-name", &Vauto_save_list_file_name /*
|
|
|
4318 File name in which we write a list of all auto save file names.
|
|
|
4319 */ );
|
|
|
4320 Vauto_save_list_file_name = Qnil;
|
|
|
4321
|
|
444
|
4322 DEFVAR_LISP ("auto-save-list-file-prefix", &Vauto_save_list_file_prefix /*
|
|
|
4323 Prefix for generating auto-save-list-file-name.
|
|
|
4324 Emacs's pid and the system name will be appended to
|
|
|
4325 this prefix to create a unique file name.
|
|
|
4326 */ );
|
|
|
4327 Vauto_save_list_file_prefix = build_string ("~/.saves-");
|
|
|
4328
|
|
|
4329 DEFVAR_BOOL ("inhibit-auto-save-session", &inhibit_auto_save_session /*
|
|
|
4330 When non-nil, inhibit auto save list file creation.
|
|
|
4331 */ );
|
|
|
4332 inhibit_auto_save_session = 0;
|
|
|
4333
|
|
428
|
4334 DEFVAR_BOOL ("disable-auto-save-when-buffer-shrinks",
|
|
|
4335 &disable_auto_save_when_buffer_shrinks /*
|
|
|
4336 If non-nil, auto-saving is disabled when a buffer shrinks too much.
|
|
|
4337 This is to prevent you from losing your edits if you accidentally
|
|
|
4338 delete a large chunk of the buffer and don't notice it until too late.
|
|
|
4339 Saving the buffer normally turns auto-save back on.
|
|
|
4340 */ );
|
|
|
4341 disable_auto_save_when_buffer_shrinks = 1;
|
|
|
4342
|
|
|
4343 DEFVAR_LISP ("directory-sep-char", &Vdirectory_sep_char /*
|
|
|
4344 Directory separator character for built-in functions that return file names.
|
|
|
4345 The value should be either ?/ or ?\\ (any other value is treated as ?\\).
|
|
|
4346 This variable affects the built-in functions only on Windows,
|
|
|
4347 on other platforms, it is initialized so that Lisp code can find out
|
|
|
4348 what the normal separator is.
|
|
|
4349 */ );
|
|
442
|
4350 #ifdef WIN32_NATIVE
|
|
432
|
4351 Vdirectory_sep_char = make_char ('\\');
|
|
|
4352 #else
|
|
442
|
4353 Vdirectory_sep_char = make_char ('/');
|
|
432
|
4354 #endif
|
|
442
|
4355
|
|
|
4356 reinit_vars_of_fileio ();
|
|
428
|
4357 }
|
|
442
|
4358
|
|
|
4359 void
|
|
|
4360 reinit_vars_of_fileio (void)
|
|
|
4361 {
|
|
|
4362 /* We want temp_name_rand to be initialized to a value likely to be
|
|
|
4363 unique to the process, not to the executable. The danger is that
|
|
|
4364 two different XEmacs processes using the same binary on different
|
|
|
4365 machines creating temp files in the same directory will be
|
|
|
4366 unlucky enough to have the same pid. If we randomize using
|
|
|
4367 process startup time, then in practice they will be unlikely to
|
|
|
4368 collide. We use the microseconds field so that scripts that start
|
|
|
4369 simultaneous XEmacs processes on multiple machines will have less
|
|
|
4370 chance of collision. */
|
|
|
4371 {
|
|
|
4372 EMACS_TIME thyme;
|
|
|
4373
|
|
|
4374 EMACS_GET_TIME (thyme);
|
|
|
4375 temp_name_rand = (unsigned int) (EMACS_SECS (thyme) ^ EMACS_USECS (thyme));
|
|
|
4376 }
|
|
|
4377 }
|
