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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
|
|
460
|
1679 /* A slightly higher-level interface than `set_file_times' */
|
|
|
1680 static int
|
|
|
1681 lisp_string_set_file_times (Lisp_Object filename,
|
|
|
1682 EMACS_TIME atime, EMACS_TIME mtime)
|
|
|
1683 {
|
|
|
1684 char *ext_filename;
|
|
|
1685 LISP_STRING_TO_EXTERNAL (filename, ext_filename, Qfile_name);
|
|
|
1686 return set_file_times (ext_filename, atime, mtime);
|
|
|
1687 }
|
|
|
1688
|
|
428
|
1689 DEFUN ("copy-file", Fcopy_file, 2, 4,
|
|
|
1690 "fCopy file: \nFCopy %s to file: \np\nP", /*
|
|
444
|
1691 Copy FILENAME to NEWNAME. Both args must be strings.
|
|
428
|
1692 Signals a `file-already-exists' error if file NEWNAME already exists,
|
|
|
1693 unless a third argument OK-IF-ALREADY-EXISTS is supplied and non-nil.
|
|
|
1694 A number as third arg means request confirmation if NEWNAME already exists.
|
|
|
1695 This is what happens in interactive use with M-x.
|
|
|
1696 Fourth arg KEEP-TIME non-nil means give the new file the same
|
|
|
1697 last-modified time as the old one. (This works on only some systems.)
|
|
|
1698 A prefix arg makes KEEP-TIME non-nil.
|
|
|
1699 */
|
|
|
1700 (filename, newname, ok_if_already_exists, keep_time))
|
|
|
1701 {
|
|
442
|
1702 /* This function can call Lisp. GC checked 2000-07-28 ben */
|
|
428
|
1703 int ifd, ofd, n;
|
|
|
1704 char buf[16 * 1024];
|
|
|
1705 struct stat st, out_st;
|
|
|
1706 Lisp_Object handler;
|
|
|
1707 int speccount = specpdl_depth ();
|
|
|
1708 struct gcpro gcpro1, gcpro2;
|
|
|
1709 /* Lisp_Object args[6]; */
|
|
|
1710 int input_file_statable_p;
|
|
|
1711
|
|
|
1712 GCPRO2 (filename, newname);
|
|
|
1713 CHECK_STRING (filename);
|
|
|
1714 CHECK_STRING (newname);
|
|
|
1715 filename = Fexpand_file_name (filename, Qnil);
|
|
|
1716 newname = Fexpand_file_name (newname, Qnil);
|
|
|
1717
|
|
|
1718 /* If the input file name has special constructs in it,
|
|
|
1719 call the corresponding file handler. */
|
|
|
1720 handler = Ffind_file_name_handler (filename, Qcopy_file);
|
|
|
1721 /* Likewise for output file name. */
|
|
|
1722 if (NILP (handler))
|
|
|
1723 handler = Ffind_file_name_handler (newname, Qcopy_file);
|
|
|
1724 if (!NILP (handler))
|
|
|
1725 {
|
|
|
1726 UNGCPRO;
|
|
|
1727 return call5 (handler, Qcopy_file, filename, newname,
|
|
|
1728 ok_if_already_exists, keep_time);
|
|
|
1729 }
|
|
|
1730
|
|
|
1731 /* When second argument is a directory, copy the file into it.
|
|
|
1732 (copy-file "foo" "bar/") == (copy-file "foo" "bar/foo")
|
|
|
1733 */
|
|
|
1734 if (!NILP (Ffile_directory_p (newname)))
|
|
|
1735 {
|
|
|
1736 Lisp_Object args[3];
|
|
|
1737 struct gcpro ngcpro1;
|
|
|
1738 int i = 1;
|
|
|
1739
|
|
|
1740 args[0] = newname;
|
|
|
1741 args[1] = Qnil; args[2] = Qnil;
|
|
|
1742 NGCPRO1 (*args);
|
|
|
1743 ngcpro1.nvars = 3;
|
|
442
|
1744 if (!IS_DIRECTORY_SEP (XSTRING_BYTE (newname,
|
|
|
1745 XSTRING_LENGTH (newname) - 1)))
|
|
|
1746
|
|
|
1747 args[i++] = Fchar_to_string (Vdirectory_sep_char);
|
|
428
|
1748 args[i++] = Ffile_name_nondirectory (filename);
|
|
|
1749 newname = Fconcat (i, args);
|
|
|
1750 NUNGCPRO;
|
|
|
1751 }
|
|
|
1752
|
|
|
1753 if (NILP (ok_if_already_exists)
|
|
|
1754 || INTP (ok_if_already_exists))
|
|
|
1755 barf_or_query_if_file_exists (newname, "copy to it",
|
|
|
1756 INTP (ok_if_already_exists), &out_st);
|
|
442
|
1757 else if (xemacs_stat ((const char *) XSTRING_DATA (newname), &out_st) < 0)
|
|
428
|
1758 out_st.st_mode = 0;
|
|
|
1759
|
|
|
1760 ifd = interruptible_open ((char *) XSTRING_DATA (filename), O_RDONLY | OPEN_BINARY, 0);
|
|
|
1761 if (ifd < 0)
|
|
|
1762 report_file_error ("Opening input file", list1 (filename));
|
|
|
1763
|
|
|
1764 record_unwind_protect (close_file_unwind, make_int (ifd));
|
|
|
1765
|
|
|
1766 /* We can only copy regular files and symbolic links. Other files are not
|
|
|
1767 copyable by us. */
|
|
|
1768 input_file_statable_p = (fstat (ifd, &st) >= 0);
|
|
|
1769
|
|
442
|
1770 #ifndef WIN32_NATIVE
|
|
428
|
1771 if (out_st.st_mode != 0
|
|
|
1772 && st.st_dev == out_st.st_dev && st.st_ino == out_st.st_ino)
|
|
|
1773 {
|
|
|
1774 errno = 0;
|
|
|
1775 report_file_error ("Input and output files are the same",
|
|
|
1776 list2 (filename, newname));
|
|
|
1777 }
|
|
|
1778 #endif
|
|
|
1779
|
|
|
1780 #if defined (S_ISREG) && defined (S_ISLNK)
|
|
|
1781 if (input_file_statable_p)
|
|
|
1782 {
|
|
|
1783 if (!(S_ISREG (st.st_mode))
|
|
|
1784 /* XEmacs: have to allow S_ISCHR in order to copy /dev/null */
|
|
|
1785 #ifdef S_ISCHR
|
|
|
1786 && !(S_ISCHR (st.st_mode))
|
|
|
1787 #endif
|
|
|
1788 && !(S_ISLNK (st.st_mode)))
|
|
|
1789 {
|
|
|
1790 #if defined (EISDIR)
|
|
|
1791 /* Get a better looking error message. */
|
|
|
1792 errno = EISDIR;
|
|
|
1793 #endif /* EISDIR */
|
|
|
1794 report_file_error ("Non-regular file", list1 (filename));
|
|
|
1795 }
|
|
|
1796 }
|
|
|
1797 #endif /* S_ISREG && S_ISLNK */
|
|
|
1798
|
|
|
1799 ofd = open( (char *) XSTRING_DATA (newname),
|
|
|
1800 O_WRONLY | O_CREAT | O_TRUNC | OPEN_BINARY, CREAT_MODE);
|
|
|
1801 if (ofd < 0)
|
|
|
1802 report_file_error ("Opening output file", list1 (newname));
|
|
|
1803
|
|
|
1804 {
|
|
|
1805 Lisp_Object ofd_locative = noseeum_cons (make_int (ofd), Qnil);
|
|
|
1806
|
|
|
1807 record_unwind_protect (close_file_unwind, ofd_locative);
|
|
|
1808
|
|
|
1809 while ((n = read_allowing_quit (ifd, buf, sizeof (buf))) > 0)
|
|
|
1810 {
|
|
|
1811 if (write_allowing_quit (ofd, buf, n) != n)
|
|
|
1812 report_file_error ("I/O error", list1 (newname));
|
|
|
1813 }
|
|
|
1814
|
|
|
1815 /* Closing the output clobbers the file times on some systems. */
|
|
|
1816 if (close (ofd) < 0)
|
|
|
1817 report_file_error ("I/O error", list1 (newname));
|
|
|
1818
|
|
|
1819 if (input_file_statable_p)
|
|
|
1820 {
|
|
442
|
1821 if (!NILP (keep_time))
|
|
|
1822 {
|
|
|
1823 EMACS_TIME atime, mtime;
|
|
|
1824 EMACS_SET_SECS_USECS (atime, st.st_atime, 0);
|
|
|
1825 EMACS_SET_SECS_USECS (mtime, st.st_mtime, 0);
|
|
460
|
1826 if (lisp_string_set_file_times (newname, atime, mtime))
|
|
442
|
1827 report_file_error ("I/O error", list1 (newname));
|
|
|
1828 }
|
|
|
1829 chmod ((const char *) XSTRING_DATA (newname),
|
|
|
1830 st.st_mode & 07777);
|
|
428
|
1831 }
|
|
|
1832
|
|
|
1833 /* We'll close it by hand */
|
|
|
1834 XCAR (ofd_locative) = Qnil;
|
|
|
1835
|
|
|
1836 /* Close ifd */
|
|
|
1837 unbind_to (speccount, Qnil);
|
|
|
1838 }
|
|
|
1839
|
|
|
1840 UNGCPRO;
|
|
|
1841 return Qnil;
|
|
|
1842 }
|
|
|
1843
|
|
|
1844 DEFUN ("make-directory-internal", Fmake_directory_internal, 1, 1, 0, /*
|
|
|
1845 Create a directory. One argument, a file name string.
|
|
|
1846 */
|
|
|
1847 (dirname_))
|
|
|
1848 {
|
|
|
1849 /* This function can GC. GC checked 1997.04.06. */
|
|
|
1850 char dir [MAXPATHLEN];
|
|
|
1851 Lisp_Object handler;
|
|
|
1852 struct gcpro gcpro1;
|
|
|
1853
|
|
|
1854 CHECK_STRING (dirname_);
|
|
|
1855 dirname_ = Fexpand_file_name (dirname_, Qnil);
|
|
|
1856
|
|
|
1857 GCPRO1 (dirname_);
|
|
|
1858 handler = Ffind_file_name_handler (dirname_, Qmake_directory_internal);
|
|
|
1859 UNGCPRO;
|
|
|
1860 if (!NILP (handler))
|
|
|
1861 return (call2 (handler, Qmake_directory_internal, dirname_));
|
|
|
1862
|
|
|
1863 if (XSTRING_LENGTH (dirname_) > (Bytecount) (sizeof (dir) - 1))
|
|
|
1864 {
|
|
|
1865 return Fsignal (Qfile_error,
|
|
|
1866 list3 (build_translated_string ("Creating directory"),
|
|
442
|
1867 build_translated_string ("pathname too long"),
|
|
428
|
1868 dirname_));
|
|
|
1869 }
|
|
|
1870 strncpy (dir, (char *) XSTRING_DATA (dirname_),
|
|
|
1871 XSTRING_LENGTH (dirname_) + 1);
|
|
|
1872
|
|
|
1873 if (dir [XSTRING_LENGTH (dirname_) - 1] == '/')
|
|
|
1874 dir [XSTRING_LENGTH (dirname_) - 1] = 0;
|
|
|
1875
|
|
|
1876 if (mkdir (dir, 0777) != 0)
|
|
|
1877 report_file_error ("Creating directory", list1 (dirname_));
|
|
|
1878
|
|
|
1879 return Qnil;
|
|
|
1880 }
|
|
|
1881
|
|
|
1882 DEFUN ("delete-directory", Fdelete_directory, 1, 1, "FDelete directory: ", /*
|
|
|
1883 Delete a directory. One argument, a file name or directory name string.
|
|
|
1884 */
|
|
|
1885 (dirname_))
|
|
|
1886 {
|
|
|
1887 /* This function can GC. GC checked 1997.04.06. */
|
|
|
1888 Lisp_Object handler;
|
|
|
1889 struct gcpro gcpro1;
|
|
|
1890
|
|
|
1891 CHECK_STRING (dirname_);
|
|
|
1892
|
|
|
1893 GCPRO1 (dirname_);
|
|
|
1894 dirname_ = Fexpand_file_name (dirname_, Qnil);
|
|
|
1895 dirname_ = Fdirectory_file_name (dirname_);
|
|
|
1896
|
|
|
1897 handler = Ffind_file_name_handler (dirname_, Qdelete_directory);
|
|
|
1898 UNGCPRO;
|
|
|
1899 if (!NILP (handler))
|
|
|
1900 return (call2 (handler, Qdelete_directory, dirname_));
|
|
|
1901
|
|
|
1902 if (rmdir ((char *) XSTRING_DATA (dirname_)) != 0)
|
|
|
1903 report_file_error ("Removing directory", list1 (dirname_));
|
|
|
1904
|
|
|
1905 return Qnil;
|
|
|
1906 }
|
|
|
1907
|
|
|
1908 DEFUN ("delete-file", Fdelete_file, 1, 1, "fDelete file: ", /*
|
|
442
|
1909 Delete the file named FILENAME (a string).
|
|
|
1910 If FILENAME has multiple names, it continues to exist with the other names.
|
|
428
|
1911 */
|
|
|
1912 (filename))
|
|
|
1913 {
|
|
|
1914 /* This function can GC. GC checked 1997.04.06. */
|
|
|
1915 Lisp_Object handler;
|
|
|
1916 struct gcpro gcpro1;
|
|
|
1917
|
|
|
1918 CHECK_STRING (filename);
|
|
|
1919 filename = Fexpand_file_name (filename, Qnil);
|
|
|
1920
|
|
|
1921 GCPRO1 (filename);
|
|
|
1922 handler = Ffind_file_name_handler (filename, Qdelete_file);
|
|
|
1923 UNGCPRO;
|
|
|
1924 if (!NILP (handler))
|
|
|
1925 return call2 (handler, Qdelete_file, filename);
|
|
|
1926
|
|
|
1927 if (0 > unlink ((char *) XSTRING_DATA (filename)))
|
|
|
1928 report_file_error ("Removing old name", list1 (filename));
|
|
|
1929 return Qnil;
|
|
|
1930 }
|
|
|
1931
|
|
|
1932 static Lisp_Object
|
|
|
1933 internal_delete_file_1 (Lisp_Object ignore, Lisp_Object ignore2)
|
|
|
1934 {
|
|
|
1935 return Qt;
|
|
|
1936 }
|
|
|
1937
|
|
|
1938 /* Delete file FILENAME, returning 1 if successful and 0 if failed. */
|
|
|
1939
|
|
|
1940 int
|
|
|
1941 internal_delete_file (Lisp_Object filename)
|
|
|
1942 {
|
|
|
1943 /* This function can GC. GC checked 1997.04.06. */
|
|
|
1944 return NILP (condition_case_1 (Qt, Fdelete_file, filename,
|
|
|
1945 internal_delete_file_1, Qnil));
|
|
|
1946 }
|
|
|
1947
|
|
|
1948 DEFUN ("rename-file", Frename_file, 2, 3,
|
|
|
1949 "fRename file: \nFRename %s to file: \np", /*
|
|
444
|
1950 Rename FILENAME as NEWNAME. Both args must be strings.
|
|
|
1951 If file has names other than FILENAME, it continues to have those names.
|
|
428
|
1952 Signals a `file-already-exists' error if a file NEWNAME already exists
|
|
|
1953 unless optional third argument OK-IF-ALREADY-EXISTS is non-nil.
|
|
|
1954 A number as third arg means request confirmation if NEWNAME already exists.
|
|
|
1955 This is what happens in interactive use with M-x.
|
|
|
1956 */
|
|
|
1957 (filename, newname, ok_if_already_exists))
|
|
|
1958 {
|
|
|
1959 /* This function can GC. GC checked 1997.04.06. */
|
|
|
1960 Lisp_Object handler;
|
|
|
1961 struct gcpro gcpro1, gcpro2;
|
|
|
1962
|
|
|
1963 GCPRO2 (filename, newname);
|
|
|
1964 CHECK_STRING (filename);
|
|
|
1965 CHECK_STRING (newname);
|
|
|
1966 filename = Fexpand_file_name (filename, Qnil);
|
|
|
1967 newname = Fexpand_file_name (newname, Qnil);
|
|
|
1968
|
|
|
1969 /* If the file name has special constructs in it,
|
|
|
1970 call the corresponding file handler. */
|
|
|
1971 handler = Ffind_file_name_handler (filename, Qrename_file);
|
|
|
1972 if (NILP (handler))
|
|
|
1973 handler = Ffind_file_name_handler (newname, Qrename_file);
|
|
|
1974 if (!NILP (handler))
|
|
|
1975 {
|
|
|
1976 UNGCPRO;
|
|
|
1977 return call4 (handler, Qrename_file,
|
|
|
1978 filename, newname, ok_if_already_exists);
|
|
|
1979 }
|
|
|
1980
|
|
|
1981 /* When second argument is a directory, rename the file into it.
|
|
|
1982 (rename-file "foo" "bar/") == (rename-file "foo" "bar/foo")
|
|
|
1983 */
|
|
|
1984 if (!NILP (Ffile_directory_p (newname)))
|
|
|
1985 {
|
|
|
1986 Lisp_Object args[3];
|
|
|
1987 struct gcpro ngcpro1;
|
|
|
1988 int i = 1;
|
|
|
1989
|
|
|
1990 args[0] = newname;
|
|
|
1991 args[1] = Qnil; args[2] = Qnil;
|
|
|
1992 NGCPRO1 (*args);
|
|
|
1993 ngcpro1.nvars = 3;
|
|
|
1994 if (XSTRING_BYTE (newname, XSTRING_LENGTH (newname) - 1) != '/')
|
|
|
1995 args[i++] = build_string ("/");
|
|
|
1996 args[i++] = Ffile_name_nondirectory (filename);
|
|
|
1997 newname = Fconcat (i, args);
|
|
|
1998 NUNGCPRO;
|
|
|
1999 }
|
|
|
2000
|
|
|
2001 if (NILP (ok_if_already_exists)
|
|
|
2002 || INTP (ok_if_already_exists))
|
|
|
2003 barf_or_query_if_file_exists (newname, "rename to it",
|
|
|
2004 INTP (ok_if_already_exists), 0);
|
|
|
2005
|
|
|
2006 /* Syncing with FSF 19.34.6 note: FSF does not have conditional code for
|
|
442
|
2007 WIN32_NATIVE here; I've removed it. --marcpa */
|
|
|
2008
|
|
|
2009 /* We have configure check for rename() and emulate using
|
|
|
2010 link()/unlink() if necessary. */
|
|
428
|
2011 if (0 > rename ((char *) XSTRING_DATA (filename),
|
|
|
2012 (char *) XSTRING_DATA (newname)))
|
|
|
2013 {
|
|
|
2014 if (errno == EXDEV)
|
|
|
2015 {
|
|
|
2016 Fcopy_file (filename, newname,
|
|
|
2017 /* We have already prompted if it was an integer,
|
|
|
2018 so don't have copy-file prompt again. */
|
|
|
2019 (NILP (ok_if_already_exists) ? Qnil : Qt),
|
|
|
2020 Qt);
|
|
|
2021 Fdelete_file (filename);
|
|
|
2022 }
|
|
|
2023 else
|
|
|
2024 {
|
|
|
2025 report_file_error ("Renaming", list2 (filename, newname));
|
|
|
2026 }
|
|
|
2027 }
|
|
|
2028 UNGCPRO;
|
|
|
2029 return Qnil;
|
|
|
2030 }
|
|
|
2031
|
|
|
2032 DEFUN ("add-name-to-file", Fadd_name_to_file, 2, 3,
|
|
|
2033 "fAdd name to file: \nFName to add to %s: \np", /*
|
|
444
|
2034 Give FILENAME additional name NEWNAME. Both args must be strings.
|
|
428
|
2035 Signals a `file-already-exists' error if a file NEWNAME already exists
|
|
|
2036 unless optional third argument OK-IF-ALREADY-EXISTS is non-nil.
|
|
|
2037 A number as third arg means request confirmation if NEWNAME already exists.
|
|
|
2038 This is what happens in interactive use with M-x.
|
|
|
2039 */
|
|
|
2040 (filename, newname, ok_if_already_exists))
|
|
|
2041 {
|
|
|
2042 /* This function can GC. GC checked 1997.04.06. */
|
|
|
2043 Lisp_Object handler;
|
|
|
2044 struct gcpro gcpro1, gcpro2;
|
|
|
2045
|
|
|
2046 GCPRO2 (filename, newname);
|
|
|
2047 CHECK_STRING (filename);
|
|
|
2048 CHECK_STRING (newname);
|
|
|
2049 filename = Fexpand_file_name (filename, Qnil);
|
|
|
2050 newname = Fexpand_file_name (newname, Qnil);
|
|
|
2051
|
|
|
2052 /* If the file name has special constructs in it,
|
|
|
2053 call the corresponding file handler. */
|
|
|
2054 handler = Ffind_file_name_handler (filename, Qadd_name_to_file);
|
|
|
2055 if (!NILP (handler))
|
|
|
2056 RETURN_UNGCPRO (call4 (handler, Qadd_name_to_file, filename,
|
|
|
2057 newname, ok_if_already_exists));
|
|
|
2058
|
|
|
2059 /* If the new name has special constructs in it,
|
|
|
2060 call the corresponding file handler. */
|
|
|
2061 handler = Ffind_file_name_handler (newname, Qadd_name_to_file);
|
|
|
2062 if (!NILP (handler))
|
|
|
2063 RETURN_UNGCPRO (call4 (handler, Qadd_name_to_file, filename,
|
|
|
2064 newname, ok_if_already_exists));
|
|
|
2065
|
|
|
2066 if (NILP (ok_if_already_exists)
|
|
|
2067 || INTP (ok_if_already_exists))
|
|
|
2068 barf_or_query_if_file_exists (newname, "make it a new name",
|
|
|
2069 INTP (ok_if_already_exists), 0);
|
|
|
2070 /* Syncing with FSF 19.34.6 note: FSF does not report a file error
|
|
|
2071 on NT here. --marcpa */
|
|
|
2072 /* But FSF #defines link as sys_link which is supplied in nt.c. We can't do
|
|
|
2073 that because sysfile.h defines sys_link depending on ENCAPSULATE_LINK.
|
|
|
2074 Reverted to previous behavior pending a working fix. (jhar) */
|
|
442
|
2075 #if defined(WIN32_NATIVE)
|
|
428
|
2076 /* Windows does not support this operation. */
|
|
|
2077 report_file_error ("Adding new name", Flist (2, &filename));
|
|
442
|
2078 #else /* not defined(WIN32_NATIVE) */
|
|
428
|
2079
|
|
|
2080 unlink ((char *) XSTRING_DATA (newname));
|
|
|
2081 if (0 > link ((char *) XSTRING_DATA (filename),
|
|
|
2082 (char *) XSTRING_DATA (newname)))
|
|
|
2083 {
|
|
|
2084 report_file_error ("Adding new name",
|
|
|
2085 list2 (filename, newname));
|
|
|
2086 }
|
|
442
|
2087 #endif /* defined(WIN32_NATIVE) */
|
|
428
|
2088
|
|
|
2089 UNGCPRO;
|
|
|
2090 return Qnil;
|
|
|
2091 }
|
|
|
2092
|
|
|
2093 DEFUN ("make-symbolic-link", Fmake_symbolic_link, 2, 3,
|
|
|
2094 "FMake symbolic link to file: \nFMake symbolic link to file %s: \np", /*
|
|
|
2095 Make a symbolic link to FILENAME, named LINKNAME. Both args strings.
|
|
|
2096 Signals a `file-already-exists' error if a file LINKNAME already exists
|
|
|
2097 unless optional third argument OK-IF-ALREADY-EXISTS is non-nil.
|
|
|
2098 A number as third arg means request confirmation if LINKNAME already exists.
|
|
|
2099 This happens for interactive use with M-x.
|
|
|
2100 */
|
|
|
2101 (filename, linkname, ok_if_already_exists))
|
|
|
2102 {
|
|
|
2103 /* This function can GC. GC checked 1997.06.04. */
|
|
442
|
2104 /* XEmacs change: run handlers even if local machine doesn't have symlinks */
|
|
428
|
2105 Lisp_Object handler;
|
|
|
2106 struct gcpro gcpro1, gcpro2;
|
|
|
2107
|
|
|
2108 GCPRO2 (filename, linkname);
|
|
|
2109 CHECK_STRING (filename);
|
|
|
2110 CHECK_STRING (linkname);
|
|
|
2111 /* If the link target has a ~, we must expand it to get
|
|
|
2112 a truly valid file name. Otherwise, do not expand;
|
|
|
2113 we want to permit links to relative file names. */
|
|
|
2114 if (XSTRING_BYTE (filename, 0) == '~')
|
|
|
2115 filename = Fexpand_file_name (filename, Qnil);
|
|
|
2116 linkname = Fexpand_file_name (linkname, Qnil);
|
|
|
2117
|
|
|
2118 /* If the file name has special constructs in it,
|
|
|
2119 call the corresponding file handler. */
|
|
|
2120 handler = Ffind_file_name_handler (filename, Qmake_symbolic_link);
|
|
|
2121 if (!NILP (handler))
|
|
|
2122 RETURN_UNGCPRO (call4 (handler, Qmake_symbolic_link, filename, linkname,
|
|
|
2123 ok_if_already_exists));
|
|
|
2124
|
|
|
2125 /* If the new link name has special constructs in it,
|
|
|
2126 call the corresponding file handler. */
|
|
|
2127 handler = Ffind_file_name_handler (linkname, Qmake_symbolic_link);
|
|
|
2128 if (!NILP (handler))
|
|
|
2129 RETURN_UNGCPRO (call4 (handler, Qmake_symbolic_link, filename,
|
|
|
2130 linkname, ok_if_already_exists));
|
|
|
2131
|
|
442
|
2132 #ifdef S_IFLNK
|
|
428
|
2133 if (NILP (ok_if_already_exists)
|
|
|
2134 || INTP (ok_if_already_exists))
|
|
|
2135 barf_or_query_if_file_exists (linkname, "make it a link",
|
|
|
2136 INTP (ok_if_already_exists), 0);
|
|
|
2137
|
|
|
2138 unlink ((char *) XSTRING_DATA (linkname));
|
|
|
2139 if (0 > symlink ((char *) XSTRING_DATA (filename),
|
|
|
2140 (char *) XSTRING_DATA (linkname)))
|
|
|
2141 {
|
|
|
2142 report_file_error ("Making symbolic link",
|
|
|
2143 list2 (filename, linkname));
|
|
|
2144 }
|
|
442
|
2145 #endif /* S_IFLNK */
|
|
|
2146
|
|
428
|
2147 UNGCPRO;
|
|
|
2148 return Qnil;
|
|
|
2149 }
|
|
|
2150
|
|
|
2151 #ifdef HPUX_NET
|
|
|
2152
|
|
|
2153 DEFUN ("sysnetunam", Fsysnetunam, 2, 2, 0, /*
|
|
|
2154 Open a network connection to PATH using LOGIN as the login string.
|
|
|
2155 */
|
|
|
2156 (path, login))
|
|
|
2157 {
|
|
|
2158 int netresult;
|
|
440
|
2159 const char *path_ext;
|
|
|
2160 const char *login_ext;
|
|
428
|
2161
|
|
|
2162 CHECK_STRING (path);
|
|
|
2163 CHECK_STRING (login);
|
|
|
2164
|
|
|
2165 /* netunam, being a strange-o system call only used once, is not
|
|
|
2166 encapsulated. */
|
|
440
|
2167
|
|
442
|
2168 LISP_STRING_TO_EXTERNAL (path, path_ext, Qfile_name);
|
|
|
2169 LISP_STRING_TO_EXTERNAL (login, login_ext, Qnative);
|
|
440
|
2170
|
|
|
2171 netresult = netunam (path_ext, login_ext);
|
|
|
2172
|
|
|
2173 return netresult == -1 ? Qnil : Qt;
|
|
428
|
2174 }
|
|
|
2175 #endif /* HPUX_NET */
|
|
|
2176
|
|
|
2177 DEFUN ("file-name-absolute-p", Ffile_name_absolute_p, 1, 1, 0, /*
|
|
|
2178 Return t if file FILENAME specifies an absolute path name.
|
|
|
2179 On Unix, this is a name starting with a `/' or a `~'.
|
|
|
2180 */
|
|
|
2181 (filename))
|
|
|
2182 {
|
|
|
2183 /* This function does not GC */
|
|
|
2184 Bufbyte *ptr;
|
|
|
2185
|
|
|
2186 CHECK_STRING (filename);
|
|
|
2187 ptr = XSTRING_DATA (filename);
|
|
|
2188 return (IS_DIRECTORY_SEP (*ptr) || *ptr == '~'
|
|
442
|
2189 #ifdef WIN32_NATIVE
|
|
428
|
2190 || (IS_DRIVE (*ptr) && ptr[1] == ':' && IS_DIRECTORY_SEP (ptr[2]))
|
|
|
2191 #endif
|
|
|
2192 ) ? Qt : Qnil;
|
|
|
2193 }
|
|
|
2194
|
|
|
2195 /* Return nonzero if file FILENAME exists and can be executed. */
|
|
|
2196
|
|
|
2197 static int
|
|
|
2198 check_executable (char *filename)
|
|
|
2199 {
|
|
442
|
2200 #ifdef WIN32_NATIVE
|
|
428
|
2201 struct stat st;
|
|
442
|
2202 if (xemacs_stat (filename, &st) < 0)
|
|
428
|
2203 return 0;
|
|
|
2204 return ((st.st_mode & S_IEXEC) != 0);
|
|
442
|
2205 #else /* not WIN32_NATIVE */
|
|
428
|
2206 #ifdef HAVE_EACCESS
|
|
442
|
2207 return eaccess (filename, X_OK) >= 0;
|
|
428
|
2208 #else
|
|
|
2209 /* Access isn't quite right because it uses the real uid
|
|
|
2210 and we really want to test with the effective uid.
|
|
|
2211 But Unix doesn't give us a right way to do it. */
|
|
442
|
2212 return access (filename, X_OK) >= 0;
|
|
428
|
2213 #endif /* HAVE_EACCESS */
|
|
442
|
2214 #endif /* not WIN32_NATIVE */
|
|
428
|
2215 }
|
|
|
2216
|
|
|
2217 /* Return nonzero if file FILENAME exists and can be written. */
|
|
|
2218
|
|
|
2219 static int
|
|
442
|
2220 check_writable (const char *filename)
|
|
428
|
2221 {
|
|
|
2222 #ifdef HAVE_EACCESS
|
|
442
|
2223 return (eaccess (filename, W_OK) >= 0);
|
|
428
|
2224 #else
|
|
|
2225 /* Access isn't quite right because it uses the real uid
|
|
|
2226 and we really want to test with the effective uid.
|
|
|
2227 But Unix doesn't give us a right way to do it.
|
|
|
2228 Opening with O_WRONLY could work for an ordinary file,
|
|
|
2229 but would lose for directories. */
|
|
442
|
2230 return (access (filename, W_OK) >= 0);
|
|
428
|
2231 #endif
|
|
|
2232 }
|
|
|
2233
|
|
|
2234 DEFUN ("file-exists-p", Ffile_exists_p, 1, 1, 0, /*
|
|
|
2235 Return t if file FILENAME exists. (This does not mean you can read it.)
|
|
|
2236 See also `file-readable-p' and `file-attributes'.
|
|
|
2237 */
|
|
|
2238 (filename))
|
|
|
2239 {
|
|
442
|
2240 /* This function can call lisp; GC checked 2000-07-11 ben */
|
|
428
|
2241 Lisp_Object abspath;
|
|
|
2242 Lisp_Object handler;
|
|
|
2243 struct stat statbuf;
|
|
|
2244 struct gcpro gcpro1;
|
|
|
2245
|
|
|
2246 CHECK_STRING (filename);
|
|
|
2247 abspath = Fexpand_file_name (filename, Qnil);
|
|
|
2248
|
|
|
2249 /* If the file name has special constructs in it,
|
|
|
2250 call the corresponding file handler. */
|
|
|
2251 GCPRO1 (abspath);
|
|
|
2252 handler = Ffind_file_name_handler (abspath, Qfile_exists_p);
|
|
|
2253 UNGCPRO;
|
|
|
2254 if (!NILP (handler))
|
|
|
2255 return call2 (handler, Qfile_exists_p, abspath);
|
|
|
2256
|
|
442
|
2257 return xemacs_stat ((char *) XSTRING_DATA (abspath), &statbuf) >= 0 ? Qt : Qnil;
|
|
428
|
2258 }
|
|
|
2259
|
|
|
2260 DEFUN ("file-executable-p", Ffile_executable_p, 1, 1, 0, /*
|
|
|
2261 Return t if FILENAME can be executed by you.
|
|
|
2262 For a directory, this means you can access files in that directory.
|
|
|
2263 */
|
|
|
2264 (filename))
|
|
|
2265
|
|
|
2266 {
|
|
442
|
2267 /* This function can GC. GC checked 07-11-2000 ben. */
|
|
428
|
2268 Lisp_Object abspath;
|
|
|
2269 Lisp_Object handler;
|
|
|
2270 struct gcpro gcpro1;
|
|
|
2271
|
|
|
2272 CHECK_STRING (filename);
|
|
|
2273 abspath = Fexpand_file_name (filename, Qnil);
|
|
|
2274
|
|
|
2275 /* If the file name has special constructs in it,
|
|
|
2276 call the corresponding file handler. */
|
|
|
2277 GCPRO1 (abspath);
|
|
|
2278 handler = Ffind_file_name_handler (abspath, Qfile_executable_p);
|
|
|
2279 UNGCPRO;
|
|
|
2280 if (!NILP (handler))
|
|
|
2281 return call2 (handler, Qfile_executable_p, abspath);
|
|
|
2282
|
|
|
2283 return check_executable ((char *) XSTRING_DATA (abspath)) ? Qt : Qnil;
|
|
|
2284 }
|
|
|
2285
|
|
|
2286 DEFUN ("file-readable-p", Ffile_readable_p, 1, 1, 0, /*
|
|
|
2287 Return t if file FILENAME exists and you can read it.
|
|
|
2288 See also `file-exists-p' and `file-attributes'.
|
|
|
2289 */
|
|
|
2290 (filename))
|
|
|
2291 {
|
|
|
2292 /* This function can GC */
|
|
|
2293 Lisp_Object abspath = Qnil;
|
|
|
2294 Lisp_Object handler;
|
|
|
2295 struct gcpro gcpro1;
|
|
|
2296 GCPRO1 (abspath);
|
|
|
2297
|
|
|
2298 CHECK_STRING (filename);
|
|
|
2299 abspath = Fexpand_file_name (filename, Qnil);
|
|
|
2300
|
|
|
2301 /* If the file name has special constructs in it,
|
|
|
2302 call the corresponding file handler. */
|
|
|
2303 handler = Ffind_file_name_handler (abspath, Qfile_readable_p);
|
|
|
2304 if (!NILP (handler))
|
|
|
2305 RETURN_UNGCPRO (call2 (handler, Qfile_readable_p, abspath));
|
|
|
2306
|
|
442
|
2307 #if defined(WIN32_NATIVE) || defined(CYGWIN)
|
|
428
|
2308 /* Under MS-DOS and Windows, open does not work for directories. */
|
|
|
2309 UNGCPRO;
|
|
|
2310 if (access (XSTRING_DATA (abspath), 0) == 0)
|
|
|
2311 return Qt;
|
|
|
2312 else
|
|
|
2313 return Qnil;
|
|
442
|
2314 #else /* not WIN32_NATIVE */
|
|
428
|
2315 {
|
|
|
2316 int desc = interruptible_open ((char *) XSTRING_DATA (abspath), O_RDONLY | OPEN_BINARY, 0);
|
|
|
2317 UNGCPRO;
|
|
|
2318 if (desc < 0)
|
|
|
2319 return Qnil;
|
|
|
2320 close (desc);
|
|
|
2321 return Qt;
|
|
|
2322 }
|
|
442
|
2323 #endif /* not WIN32_NATIVE */
|
|
428
|
2324 }
|
|
|
2325
|
|
|
2326 /* Having this before file-symlink-p mysteriously caused it to be forgotten
|
|
|
2327 on the RT/PC. */
|
|
|
2328 DEFUN ("file-writable-p", Ffile_writable_p, 1, 1, 0, /*
|
|
|
2329 Return t if file FILENAME can be written or created by you.
|
|
|
2330 */
|
|
|
2331 (filename))
|
|
|
2332 {
|
|
|
2333 /* This function can GC. GC checked 1997.04.10. */
|
|
|
2334 Lisp_Object abspath, dir;
|
|
|
2335 Lisp_Object handler;
|
|
|
2336 struct stat statbuf;
|
|
|
2337 struct gcpro gcpro1;
|
|
|
2338
|
|
|
2339 CHECK_STRING (filename);
|
|
|
2340 abspath = Fexpand_file_name (filename, Qnil);
|
|
|
2341
|
|
|
2342 /* If the file name has special constructs in it,
|
|
|
2343 call the corresponding file handler. */
|
|
|
2344 GCPRO1 (abspath);
|
|
|
2345 handler = Ffind_file_name_handler (abspath, Qfile_writable_p);
|
|
|
2346 UNGCPRO;
|
|
|
2347 if (!NILP (handler))
|
|
|
2348 return call2 (handler, Qfile_writable_p, abspath);
|
|
|
2349
|
|
442
|
2350 if (xemacs_stat ((char *) XSTRING_DATA (abspath), &statbuf) >= 0)
|
|
428
|
2351 return (check_writable ((char *) XSTRING_DATA (abspath))
|
|
|
2352 ? Qt : Qnil);
|
|
|
2353
|
|
|
2354
|
|
|
2355 GCPRO1 (abspath);
|
|
|
2356 dir = Ffile_name_directory (abspath);
|
|
|
2357 UNGCPRO;
|
|
|
2358 return (check_writable (!NILP (dir) ? (char *) XSTRING_DATA (dir)
|
|
|
2359 : "")
|
|
|
2360 ? Qt : Qnil);
|
|
|
2361 }
|
|
|
2362
|
|
|
2363 DEFUN ("file-symlink-p", Ffile_symlink_p, 1, 1, 0, /*
|
|
|
2364 Return non-nil if file FILENAME is the name of a symbolic link.
|
|
|
2365 The value is the name of the file to which it is linked.
|
|
|
2366 Otherwise returns nil.
|
|
|
2367 */
|
|
|
2368 (filename))
|
|
|
2369 {
|
|
|
2370 /* This function can GC. GC checked 1997.04.10. */
|
|
442
|
2371 /* XEmacs change: run handlers even if local machine doesn't have symlinks */
|
|
428
|
2372 #ifdef S_IFLNK
|
|
|
2373 char *buf;
|
|
|
2374 int bufsize;
|
|
|
2375 int valsize;
|
|
|
2376 Lisp_Object val;
|
|
442
|
2377 #endif
|
|
428
|
2378 Lisp_Object handler;
|
|
|
2379 struct gcpro gcpro1;
|
|
|
2380
|
|
|
2381 CHECK_STRING (filename);
|
|
|
2382 filename = Fexpand_file_name (filename, Qnil);
|
|
|
2383
|
|
|
2384 /* If the file name has special constructs in it,
|
|
|
2385 call the corresponding file handler. */
|
|
|
2386 GCPRO1 (filename);
|
|
|
2387 handler = Ffind_file_name_handler (filename, Qfile_symlink_p);
|
|
|
2388 UNGCPRO;
|
|
|
2389 if (!NILP (handler))
|
|
|
2390 return call2 (handler, Qfile_symlink_p, filename);
|
|
|
2391
|
|
442
|
2392 #ifdef S_IFLNK
|
|
428
|
2393 bufsize = 100;
|
|
|
2394 while (1)
|
|
|
2395 {
|
|
|
2396 buf = xnew_array_and_zero (char, bufsize);
|
|
|
2397 valsize = readlink ((char *) XSTRING_DATA (filename),
|
|
|
2398 buf, bufsize);
|
|
|
2399 if (valsize < bufsize) break;
|
|
|
2400 /* Buffer was not long enough */
|
|
|
2401 xfree (buf);
|
|
|
2402 bufsize *= 2;
|
|
|
2403 }
|
|
|
2404 if (valsize == -1)
|
|
|
2405 {
|
|
|
2406 xfree (buf);
|
|
|
2407 return Qnil;
|
|
|
2408 }
|
|
|
2409 val = make_string ((Bufbyte *) buf, valsize);
|
|
|
2410 xfree (buf);
|
|
|
2411 return val;
|
|
|
2412 #else /* not S_IFLNK */
|
|
|
2413 return Qnil;
|
|
|
2414 #endif /* not S_IFLNK */
|
|
|
2415 }
|
|
|
2416
|
|
|
2417 DEFUN ("file-directory-p", Ffile_directory_p, 1, 1, 0, /*
|
|
|
2418 Return t if file FILENAME is the name of a directory as a file.
|
|
|
2419 A directory name spec may be given instead; then the value is t
|
|
|
2420 if the directory so specified exists and really is a directory.
|
|
|
2421 */
|
|
|
2422 (filename))
|
|
|
2423 {
|
|
|
2424 /* This function can GC. GC checked 1997.04.10. */
|
|
|
2425 Lisp_Object abspath;
|
|
|
2426 struct stat st;
|
|
|
2427 Lisp_Object handler;
|
|
|
2428 struct gcpro gcpro1;
|
|
|
2429
|
|
|
2430 GCPRO1 (current_buffer->directory);
|
|
|
2431 abspath = expand_and_dir_to_file (filename,
|
|
|
2432 current_buffer->directory);
|
|
|
2433 UNGCPRO;
|
|
|
2434
|
|
|
2435 /* If the file name has special constructs in it,
|
|
|
2436 call the corresponding file handler. */
|
|
|
2437 GCPRO1 (abspath);
|
|
|
2438 handler = Ffind_file_name_handler (abspath, Qfile_directory_p);
|
|
|
2439 UNGCPRO;
|
|
|
2440 if (!NILP (handler))
|
|
|
2441 return call2 (handler, Qfile_directory_p, abspath);
|
|
|
2442
|
|
442
|
2443 if (xemacs_stat ((char *) XSTRING_DATA (abspath), &st) < 0)
|
|
428
|
2444 return Qnil;
|
|
|
2445 return (st.st_mode & S_IFMT) == S_IFDIR ? Qt : Qnil;
|
|
|
2446 }
|
|
|
2447
|
|
|
2448 DEFUN ("file-accessible-directory-p", Ffile_accessible_directory_p, 1, 1, 0, /*
|
|
|
2449 Return t if file FILENAME is the name of a directory as a file,
|
|
|
2450 and files in that directory can be opened by you. In order to use a
|
|
|
2451 directory as a buffer's current directory, this predicate must return true.
|
|
|
2452 A directory name spec may be given instead; then the value is t
|
|
|
2453 if the directory so specified exists and really is a readable and
|
|
|
2454 searchable directory.
|
|
|
2455 */
|
|
|
2456 (filename))
|
|
|
2457 {
|
|
|
2458 /* This function can GC. GC checked 1997.04.10. */
|
|
|
2459 Lisp_Object handler;
|
|
|
2460
|
|
|
2461 /* If the file name has special constructs in it,
|
|
|
2462 call the corresponding file handler. */
|
|
|
2463 handler = Ffind_file_name_handler (filename, Qfile_accessible_directory_p);
|
|
|
2464 if (!NILP (handler))
|
|
|
2465 return call2 (handler, Qfile_accessible_directory_p,
|
|
|
2466 filename);
|
|
|
2467
|
|
442
|
2468 #if !defined(WIN32_NATIVE)
|
|
428
|
2469 if (NILP (Ffile_directory_p (filename)))
|
|
|
2470 return (Qnil);
|
|
|
2471 else
|
|
|
2472 return Ffile_executable_p (filename);
|
|
|
2473 #else
|
|
|
2474 {
|
|
|
2475 int tem;
|
|
|
2476 struct gcpro gcpro1;
|
|
|
2477 /* It's an unlikely combination, but yes we really do need to gcpro:
|
|
|
2478 Suppose that file-accessible-directory-p has no handler, but
|
|
|
2479 file-directory-p does have a handler; this handler causes a GC which
|
|
|
2480 relocates the string in `filename'; and finally file-directory-p
|
|
|
2481 returns non-nil. Then we would end up passing a garbaged string
|
|
|
2482 to file-executable-p. */
|
|
|
2483 GCPRO1 (filename);
|
|
|
2484 tem = (NILP (Ffile_directory_p (filename))
|
|
|
2485 || NILP (Ffile_executable_p (filename)));
|
|
|
2486 UNGCPRO;
|
|
|
2487 return tem ? Qnil : Qt;
|
|
|
2488 }
|
|
442
|
2489 #endif /* !defined(WIN32_NATIVE) */
|
|
428
|
2490 }
|
|
|
2491
|
|
|
2492 DEFUN ("file-regular-p", Ffile_regular_p, 1, 1, 0, /*
|
|
|
2493 Return t if file FILENAME is the name of a regular file.
|
|
|
2494 This is the sort of file that holds an ordinary stream of data bytes.
|
|
|
2495 */
|
|
|
2496 (filename))
|
|
|
2497 {
|
|
|
2498 /* This function can GC. GC checked 1997.04.10. */
|
|
|
2499 Lisp_Object abspath;
|
|
|
2500 struct stat st;
|
|
|
2501 Lisp_Object handler;
|
|
|
2502 struct gcpro gcpro1;
|
|
|
2503
|
|
|
2504 GCPRO1 (current_buffer->directory);
|
|
|
2505 abspath = expand_and_dir_to_file (filename, current_buffer->directory);
|
|
|
2506 UNGCPRO;
|
|
|
2507
|
|
|
2508 /* If the file name has special constructs in it,
|
|
|
2509 call the corresponding file handler. */
|
|
|
2510 GCPRO1 (abspath);
|
|
|
2511 handler = Ffind_file_name_handler (abspath, Qfile_regular_p);
|
|
|
2512 UNGCPRO;
|
|
|
2513 if (!NILP (handler))
|
|
|
2514 return call2 (handler, Qfile_regular_p, abspath);
|
|
|
2515
|
|
442
|
2516 if (xemacs_stat ((char *) XSTRING_DATA (abspath), &st) < 0)
|
|
428
|
2517 return Qnil;
|
|
|
2518 return (st.st_mode & S_IFMT) == S_IFREG ? Qt : Qnil;
|
|
|
2519 }
|
|
|
2520
|
|
|
2521 DEFUN ("file-modes", Ffile_modes, 1, 1, 0, /*
|
|
444
|
2522 Return mode bits of file named FILENAME, as an integer.
|
|
428
|
2523 */
|
|
|
2524 (filename))
|
|
|
2525 {
|
|
|
2526 /* This function can GC. GC checked 1997.04.10. */
|
|
|
2527 Lisp_Object abspath;
|
|
|
2528 struct stat st;
|
|
|
2529 Lisp_Object handler;
|
|
|
2530 struct gcpro gcpro1;
|
|
|
2531
|
|
|
2532 GCPRO1 (current_buffer->directory);
|
|
|
2533 abspath = expand_and_dir_to_file (filename,
|
|
|
2534 current_buffer->directory);
|
|
|
2535 UNGCPRO;
|
|
|
2536
|
|
|
2537 /* If the file name has special constructs in it,
|
|
|
2538 call the corresponding file handler. */
|
|
|
2539 GCPRO1 (abspath);
|
|
|
2540 handler = Ffind_file_name_handler (abspath, Qfile_modes);
|
|
|
2541 UNGCPRO;
|
|
|
2542 if (!NILP (handler))
|
|
|
2543 return call2 (handler, Qfile_modes, abspath);
|
|
|
2544
|
|
442
|
2545 if (xemacs_stat ((char *) XSTRING_DATA (abspath), &st) < 0)
|
|
428
|
2546 return Qnil;
|
|
|
2547 /* Syncing with FSF 19.34.6 note: not in FSF, #if 0'ed out here. */
|
|
|
2548 #if 0
|
|
442
|
2549 #ifdef WIN32_NATIVE
|
|
428
|
2550 if (check_executable (XSTRING_DATA (abspath)))
|
|
|
2551 st.st_mode |= S_IEXEC;
|
|
442
|
2552 #endif /* WIN32_NATIVE */
|
|
428
|
2553 #endif /* 0 */
|
|
|
2554
|
|
|
2555 return make_int (st.st_mode & 07777);
|
|
|
2556 }
|
|
|
2557
|
|
|
2558 DEFUN ("set-file-modes", Fset_file_modes, 2, 2, 0, /*
|
|
444
|
2559 Set mode bits of file named FILENAME to MODE (an integer).
|
|
428
|
2560 Only the 12 low bits of MODE are used.
|
|
|
2561 */
|
|
|
2562 (filename, mode))
|
|
|
2563 {
|
|
|
2564 /* This function can GC. GC checked 1997.04.10. */
|
|
|
2565 Lisp_Object abspath;
|
|
|
2566 Lisp_Object handler;
|
|
|
2567 struct gcpro gcpro1;
|
|
|
2568
|
|
|
2569 GCPRO1 (current_buffer->directory);
|
|
|
2570 abspath = Fexpand_file_name (filename, current_buffer->directory);
|
|
|
2571 UNGCPRO;
|
|
|
2572
|
|
|
2573 CHECK_INT (mode);
|
|
|
2574
|
|
|
2575 /* If the file name has special constructs in it,
|
|
|
2576 call the corresponding file handler. */
|
|
|
2577 GCPRO1 (abspath);
|
|
|
2578 handler = Ffind_file_name_handler (abspath, Qset_file_modes);
|
|
|
2579 UNGCPRO;
|
|
|
2580 if (!NILP (handler))
|
|
|
2581 return call3 (handler, Qset_file_modes, abspath, mode);
|
|
|
2582
|
|
|
2583 if (chmod ((char *) XSTRING_DATA (abspath), XINT (mode)) < 0)
|
|
|
2584 report_file_error ("Doing chmod", list1 (abspath));
|
|
|
2585
|
|
|
2586 return Qnil;
|
|
|
2587 }
|
|
|
2588
|
|
|
2589 DEFUN ("set-default-file-modes", Fset_default_file_modes, 1, 1, 0, /*
|
|
|
2590 Set the file permission bits for newly created files.
|
|
444
|
2591 The argument MODE should be an integer; if a bit in MODE is 1,
|
|
|
2592 subsequently created files will not have the permission corresponding
|
|
|
2593 to that bit enabled. Only the low 9 bits are used.
|
|
428
|
2594 This setting is inherited by subprocesses.
|
|
|
2595 */
|
|
|
2596 (mode))
|
|
|
2597 {
|
|
|
2598 CHECK_INT (mode);
|
|
|
2599
|
|
|
2600 umask ((~ XINT (mode)) & 0777);
|
|
|
2601
|
|
|
2602 return Qnil;
|
|
|
2603 }
|
|
|
2604
|
|
|
2605 DEFUN ("default-file-modes", Fdefault_file_modes, 0, 0, 0, /*
|
|
|
2606 Return the default file protection for created files.
|
|
|
2607 The umask value determines which permissions are enabled in newly
|
|
|
2608 created files. If a permission's bit in the umask is 1, subsequently
|
|
|
2609 created files will not have that permission enabled.
|
|
|
2610 */
|
|
|
2611 ())
|
|
|
2612 {
|
|
|
2613 int mode;
|
|
|
2614
|
|
|
2615 mode = umask (0);
|
|
|
2616 umask (mode);
|
|
|
2617
|
|
|
2618 return make_int ((~ mode) & 0777);
|
|
|
2619 }
|
|
|
2620
|
|
|
2621 DEFUN ("unix-sync", Funix_sync, 0, 0, "", /*
|
|
|
2622 Tell Unix to finish all pending disk updates.
|
|
|
2623 */
|
|
|
2624 ())
|
|
|
2625 {
|
|
442
|
2626 #ifndef WIN32_NATIVE
|
|
428
|
2627 sync ();
|
|
|
2628 #endif
|
|
|
2629 return Qnil;
|
|
|
2630 }
|
|
|
2631
|
|
|
2632
|
|
|
2633 DEFUN ("file-newer-than-file-p", Ffile_newer_than_file_p, 2, 2, 0, /*
|
|
|
2634 Return t if file FILE1 is newer than file FILE2.
|
|
|
2635 If FILE1 does not exist, the answer is nil;
|
|
|
2636 otherwise, if FILE2 does not exist, the answer is t.
|
|
|
2637 */
|
|
|
2638 (file1, file2))
|
|
|
2639 {
|
|
|
2640 /* This function can GC. GC checked 1997.04.10. */
|
|
|
2641 Lisp_Object abspath1, abspath2;
|
|
|
2642 struct stat st;
|
|
|
2643 int mtime1;
|
|
|
2644 Lisp_Object handler;
|
|
|
2645 struct gcpro gcpro1, gcpro2, gcpro3;
|
|
|
2646
|
|
|
2647 CHECK_STRING (file1);
|
|
|
2648 CHECK_STRING (file2);
|
|
|
2649
|
|
|
2650 abspath1 = Qnil;
|
|
|
2651 abspath2 = Qnil;
|
|
|
2652
|
|
|
2653 GCPRO3 (abspath1, abspath2, current_buffer->directory);
|
|
|
2654 abspath1 = expand_and_dir_to_file (file1, current_buffer->directory);
|
|
|
2655 abspath2 = expand_and_dir_to_file (file2, current_buffer->directory);
|
|
|
2656
|
|
|
2657 /* If the file name has special constructs in it,
|
|
|
2658 call the corresponding file handler. */
|
|
|
2659 handler = Ffind_file_name_handler (abspath1, Qfile_newer_than_file_p);
|
|
|
2660 if (NILP (handler))
|
|
|
2661 handler = Ffind_file_name_handler (abspath2, Qfile_newer_than_file_p);
|
|
|
2662 UNGCPRO;
|
|
|
2663 if (!NILP (handler))
|
|
|
2664 return call3 (handler, Qfile_newer_than_file_p, abspath1,
|
|
|
2665 abspath2);
|
|
|
2666
|
|
442
|
2667 if (xemacs_stat ((char *) XSTRING_DATA (abspath1), &st) < 0)
|
|
428
|
2668 return Qnil;
|
|
|
2669
|
|
|
2670 mtime1 = st.st_mtime;
|
|
|
2671
|
|
442
|
2672 if (xemacs_stat ((char *) XSTRING_DATA (abspath2), &st) < 0)
|
|
428
|
2673 return Qt;
|
|
|
2674
|
|
|
2675 return (mtime1 > st.st_mtime) ? Qt : Qnil;
|
|
|
2676 }
|
|
|
2677
|
|
|
2678
|
|
|
2679 /* Stack sizes > 2**16 is a good way to elicit compiler bugs */
|
|
|
2680 /* #define READ_BUF_SIZE (2 << 16) */
|
|
|
2681 #define READ_BUF_SIZE (1 << 15)
|
|
|
2682
|
|
|
2683 DEFUN ("insert-file-contents-internal", Finsert_file_contents_internal,
|
|
|
2684 1, 7, 0, /*
|
|
|
2685 Insert contents of file FILENAME after point; no coding-system frobbing.
|
|
|
2686 This function is identical to `insert-file-contents' except for the
|
|
|
2687 handling of the CODESYS and USED-CODESYS arguments under
|
|
|
2688 XEmacs/Mule. (When Mule support is not present, both functions are
|
|
|
2689 identical and ignore the CODESYS and USED-CODESYS arguments.)
|
|
|
2690
|
|
|
2691 If support for Mule exists in this Emacs, the file is decoded according
|
|
|
2692 to CODESYS; if omitted, no conversion happens. If USED-CODESYS is non-nil,
|
|
|
2693 it should be a symbol, and the actual coding system that was used for the
|
|
|
2694 decoding is stored into it. It will in general be different from CODESYS
|
|
|
2695 if CODESYS specifies automatic encoding detection or end-of-line detection.
|
|
|
2696
|
|
444
|
2697 Currently START and END refer to byte positions (as opposed to character
|
|
428
|
2698 positions), even in Mule. (Fixing this is very difficult.)
|
|
|
2699 */
|
|
444
|
2700 (filename, visit, start, end, replace, codesys, used_codesys))
|
|
428
|
2701 {
|
|
|
2702 /* This function can call lisp */
|
|
|
2703 struct stat st;
|
|
|
2704 int fd;
|
|
|
2705 int saverrno = 0;
|
|
|
2706 Charcount inserted = 0;
|
|
|
2707 int speccount;
|
|
|
2708 struct gcpro gcpro1, gcpro2, gcpro3, gcpro4, gcpro5;
|
|
|
2709 Lisp_Object handler = Qnil, val;
|
|
|
2710 int total;
|
|
|
2711 Bufbyte read_buf[READ_BUF_SIZE];
|
|
|
2712 int mc_count;
|
|
|
2713 struct buffer *buf = current_buffer;
|
|
|
2714 Lisp_Object curbuf;
|
|
|
2715 int not_regular = 0;
|
|
|
2716
|
|
|
2717 if (buf->base_buffer && ! NILP (visit))
|
|
|
2718 error ("Cannot do file visiting in an indirect buffer");
|
|
|
2719
|
|
|
2720 /* No need to call Fbarf_if_buffer_read_only() here.
|
|
|
2721 That's called in begin_multiple_change() or wherever. */
|
|
|
2722
|
|
|
2723 val = Qnil;
|
|
|
2724
|
|
|
2725 /* #### dmoore - should probably check in various places to see if
|
|
|
2726 curbuf was killed and if so signal an error? */
|
|
|
2727
|
|
|
2728 XSETBUFFER (curbuf, buf);
|
|
|
2729
|
|
|
2730 GCPRO5 (filename, val, visit, handler, curbuf);
|
|
|
2731
|
|
|
2732 mc_count = (NILP (replace)) ?
|
|
|
2733 begin_multiple_change (buf, BUF_PT (buf), BUF_PT (buf)) :
|
|
|
2734 begin_multiple_change (buf, BUF_BEG (buf), BUF_Z (buf));
|
|
|
2735
|
|
|
2736 speccount = specpdl_depth (); /* begin_multiple_change also adds
|
|
|
2737 an unwind_protect */
|
|
|
2738
|
|
|
2739 filename = Fexpand_file_name (filename, Qnil);
|
|
|
2740
|
|
|
2741 /* If the file name has special constructs in it,
|
|
|
2742 call the corresponding file handler. */
|
|
|
2743 handler = Ffind_file_name_handler (filename, Qinsert_file_contents);
|
|
|
2744 if (!NILP (handler))
|
|
|
2745 {
|
|
|
2746 val = call6 (handler, Qinsert_file_contents, filename,
|
|
444
|
2747 visit, start, end, replace);
|
|
428
|
2748 goto handled;
|
|
|
2749 }
|
|
|
2750
|
|
|
2751 #ifdef FILE_CODING
|
|
|
2752 if (!NILP (used_codesys))
|
|
|
2753 CHECK_SYMBOL (used_codesys);
|
|
|
2754 #endif
|
|
|
2755
|
|
444
|
2756 if ( (!NILP (start) || !NILP (end)) && !NILP (visit) )
|
|
428
|
2757 error ("Attempt to visit less than an entire file");
|
|
|
2758
|
|
|
2759 fd = -1;
|
|
|
2760
|
|
442
|
2761 if (xemacs_stat ((char *) XSTRING_DATA (filename), &st) < 0)
|
|
428
|
2762 {
|
|
|
2763 if (fd >= 0) close (fd);
|
|
|
2764 badopen:
|
|
|
2765 if (NILP (visit))
|
|
|
2766 report_file_error ("Opening input file", list1 (filename));
|
|
|
2767 st.st_mtime = -1;
|
|
|
2768 goto notfound;
|
|
|
2769 }
|
|
|
2770
|
|
|
2771 #ifdef S_IFREG
|
|
|
2772 /* Signal an error if we are accessing a non-regular file, with
|
|
444
|
2773 REPLACE, START or END being non-nil. */
|
|
428
|
2774 if (!S_ISREG (st.st_mode))
|
|
|
2775 {
|
|
|
2776 not_regular = 1;
|
|
|
2777
|
|
|
2778 if (!NILP (visit))
|
|
|
2779 goto notfound;
|
|
|
2780
|
|
444
|
2781 if (!NILP (replace) || !NILP (start) || !NILP (end))
|
|
428
|
2782 {
|
|
|
2783 end_multiple_change (buf, mc_count);
|
|
|
2784
|
|
444
|
2785 RETURN_UNGCPRO
|
|
|
2786 (Fsignal (Qfile_error,
|
|
|
2787 list2 (build_translated_string("not a regular file"),
|
|
|
2788 filename)));
|
|
428
|
2789 }
|
|
|
2790 }
|
|
|
2791 #endif /* S_IFREG */
|
|
|
2792
|
|
444
|
2793 if (!NILP (start))
|
|
|
2794 CHECK_INT (start);
|
|
428
|
2795 else
|
|
444
|
2796 start = Qzero;
|
|
428
|
2797
|
|
|
2798 if (!NILP (end))
|
|
|
2799 CHECK_INT (end);
|
|
|
2800
|
|
|
2801 if (fd < 0)
|
|
|
2802 {
|
|
|
2803 if ((fd = interruptible_open ((char *) XSTRING_DATA (filename),
|
|
|
2804 O_RDONLY | OPEN_BINARY, 0)) < 0)
|
|
|
2805 goto badopen;
|
|
|
2806 }
|
|
|
2807
|
|
|
2808 /* Replacement should preserve point as it preserves markers. */
|
|
|
2809 if (!NILP (replace))
|
|
|
2810 record_unwind_protect (restore_point_unwind, Fpoint_marker (Qnil, Qnil));
|
|
|
2811
|
|
|
2812 record_unwind_protect (close_file_unwind, make_int (fd));
|
|
|
2813
|
|
|
2814 /* Supposedly happens on VMS. */
|
|
|
2815 if (st.st_size < 0)
|
|
|
2816 error ("File size is negative");
|
|
|
2817
|
|
|
2818 if (NILP (end))
|
|
|
2819 {
|
|
|
2820 if (!not_regular)
|
|
|
2821 {
|
|
|
2822 end = make_int (st.st_size);
|
|
|
2823 if (XINT (end) != st.st_size)
|
|
|
2824 error ("Maximum buffer size exceeded");
|
|
|
2825 }
|
|
|
2826 }
|
|
|
2827
|
|
|
2828 /* If requested, replace the accessible part of the buffer
|
|
|
2829 with the file contents. Avoid replacing text at the
|
|
|
2830 beginning or end of the buffer that matches the file contents;
|
|
|
2831 that preserves markers pointing to the unchanged parts. */
|
|
|
2832 #if !defined (FILE_CODING)
|
|
|
2833 /* The replace-mode code currently only works when the assumption
|
|
|
2834 'one byte == one char' holds true. This fails Mule because
|
|
|
2835 files may contain multibyte characters. It holds under Windows NT
|
|
|
2836 provided we convert CRLF into LF. */
|
|
|
2837 # define FSFMACS_SPEEDY_INSERT
|
|
|
2838 #endif /* !defined (FILE_CODING) */
|
|
|
2839
|
|
|
2840 #ifndef FSFMACS_SPEEDY_INSERT
|
|
|
2841 if (!NILP (replace))
|
|
|
2842 {
|
|
|
2843 buffer_delete_range (buf, BUF_BEG (buf), BUF_Z (buf),
|
|
|
2844 !NILP (visit) ? INSDEL_NO_LOCKING : 0);
|
|
|
2845 }
|
|
|
2846 #else /* FSFMACS_SPEEDY_INSERT */
|
|
|
2847 if (!NILP (replace))
|
|
|
2848 {
|
|
|
2849 char buffer[1 << 14];
|
|
|
2850 Bufpos same_at_start = BUF_BEGV (buf);
|
|
|
2851 Bufpos same_at_end = BUF_ZV (buf);
|
|
|
2852 int overlap;
|
|
|
2853
|
|
|
2854 /* Count how many chars at the start of the file
|
|
|
2855 match the text at the beginning of the buffer. */
|
|
|
2856 while (1)
|
|
|
2857 {
|
|
|
2858 int nread;
|
|
|
2859 Bufpos bufpos;
|
|
|
2860 nread = read_allowing_quit (fd, buffer, sizeof buffer);
|
|
|
2861 if (nread < 0)
|
|
|
2862 error ("IO error reading %s: %s",
|
|
|
2863 XSTRING_DATA (filename), strerror (errno));
|
|
|
2864 else if (nread == 0)
|
|
|
2865 break;
|
|
|
2866 bufpos = 0;
|
|
|
2867 while (bufpos < nread && same_at_start < BUF_ZV (buf)
|
|
|
2868 && BUF_FETCH_CHAR (buf, same_at_start) == buffer[bufpos])
|
|
|
2869 same_at_start++, bufpos++;
|
|
|
2870 /* If we found a discrepancy, stop the scan.
|
|
|
2871 Otherwise loop around and scan the next bufferful. */
|
|
|
2872 if (bufpos != nread)
|
|
|
2873 break;
|
|
|
2874 }
|
|
|
2875 /* If the file matches the buffer completely,
|
|
|
2876 there's no need to replace anything. */
|
|
|
2877 if (same_at_start - BUF_BEGV (buf) == st.st_size)
|
|
|
2878 {
|
|
|
2879 close (fd);
|
|
|
2880 unbind_to (speccount, Qnil);
|
|
|
2881 /* Truncate the buffer to the size of the file. */
|
|
|
2882 buffer_delete_range (buf, same_at_start, same_at_end,
|
|
|
2883 !NILP (visit) ? INSDEL_NO_LOCKING : 0);
|
|
|
2884 goto handled;
|
|
|
2885 }
|
|
|
2886 /* Count how many chars at the end of the file
|
|
|
2887 match the text at the end of the buffer. */
|
|
|
2888 while (1)
|
|
|
2889 {
|
|
|
2890 int total_read, nread;
|
|
|
2891 Bufpos bufpos, curpos, trial;
|
|
|
2892
|
|
|
2893 /* At what file position are we now scanning? */
|
|
|
2894 curpos = st.st_size - (BUF_ZV (buf) - same_at_end);
|
|
|
2895 /* If the entire file matches the buffer tail, stop the scan. */
|
|
|
2896 if (curpos == 0)
|
|
|
2897 break;
|
|
|
2898 /* How much can we scan in the next step? */
|
|
|
2899 trial = min (curpos, (Bufpos) sizeof (buffer));
|
|
|
2900 if (lseek (fd, curpos - trial, 0) < 0)
|
|
|
2901 report_file_error ("Setting file position", list1 (filename));
|
|
|
2902
|
|
|
2903 total_read = 0;
|
|
|
2904 while (total_read < trial)
|
|
|
2905 {
|
|
|
2906 nread = read_allowing_quit (fd, buffer + total_read,
|
|
|
2907 trial - total_read);
|
|
|
2908 if (nread <= 0)
|
|
|
2909 report_file_error ("IO error reading file", list1 (filename));
|
|
|
2910 total_read += nread;
|
|
|
2911 }
|
|
|
2912 /* Scan this bufferful from the end, comparing with
|
|
|
2913 the Emacs buffer. */
|
|
|
2914 bufpos = total_read;
|
|
|
2915 /* Compare with same_at_start to avoid counting some buffer text
|
|
|
2916 as matching both at the file's beginning and at the end. */
|
|
|
2917 while (bufpos > 0 && same_at_end > same_at_start
|
|
|
2918 && BUF_FETCH_CHAR (buf, same_at_end - 1) ==
|
|
|
2919 buffer[bufpos - 1])
|
|
|
2920 same_at_end--, bufpos--;
|
|
|
2921 /* If we found a discrepancy, stop the scan.
|
|
|
2922 Otherwise loop around and scan the preceding bufferful. */
|
|
|
2923 if (bufpos != 0)
|
|
|
2924 break;
|
|
|
2925 /* If display current starts at beginning of line,
|
|
|
2926 keep it that way. */
|
|
|
2927 if (XBUFFER (XWINDOW (Fselected_window (Qnil))->buffer) == buf)
|
|
|
2928 XWINDOW (Fselected_window (Qnil))->start_at_line_beg =
|
|
|
2929 !NILP (Fbolp (make_buffer (buf)));
|
|
|
2930 }
|
|
|
2931
|
|
|
2932 /* Don't try to reuse the same piece of text twice. */
|
|
|
2933 overlap = same_at_start - BUF_BEGV (buf) -
|
|
|
2934 (same_at_end + st.st_size - BUF_ZV (buf));
|
|
|
2935 if (overlap > 0)
|
|
|
2936 same_at_end += overlap;
|
|
|
2937
|
|
|
2938 /* Arrange to read only the nonmatching middle part of the file. */
|
|
444
|
2939 start = make_int (same_at_start - BUF_BEGV (buf));
|
|
428
|
2940 end = make_int (st.st_size - (BUF_ZV (buf) - same_at_end));
|
|
|
2941
|
|
|
2942 buffer_delete_range (buf, same_at_start, same_at_end,
|
|
|
2943 !NILP (visit) ? INSDEL_NO_LOCKING : 0);
|
|
|
2944 /* Insert from the file at the proper position. */
|
|
|
2945 BUF_SET_PT (buf, same_at_start);
|
|
|
2946 }
|
|
|
2947 #endif /* FSFMACS_SPEEDY_INSERT */
|
|
|
2948
|
|
|
2949 if (!not_regular)
|
|
|
2950 {
|
|
444
|
2951 total = XINT (end) - XINT (start);
|
|
428
|
2952
|
|
|
2953 /* Make sure point-max won't overflow after this insertion. */
|
|
|
2954 if (total != XINT (make_int (total)))
|
|
|
2955 error ("Maximum buffer size exceeded");
|
|
|
2956 }
|
|
|
2957 else
|
|
|
2958 /* For a special file, all we can do is guess. The value of -1
|
|
|
2959 will make the stream functions read as much as possible. */
|
|
|
2960 total = -1;
|
|
|
2961
|
|
444
|
2962 if (XINT (start) != 0
|
|
428
|
2963 #ifdef FSFMACS_SPEEDY_INSERT
|
|
|
2964 /* why was this here? asked jwz. The reason is that the replace-mode
|
|
|
2965 connivings above will normally put the file pointer other than
|
|
|
2966 where it should be. */
|
|
|
2967 || !NILP (replace)
|
|
|
2968 #endif /* !FSFMACS_SPEEDY_INSERT */
|
|
|
2969 )
|
|
|
2970 {
|
|
444
|
2971 if (lseek (fd, XINT (start), 0) < 0)
|
|
428
|
2972 report_file_error ("Setting file position", list1 (filename));
|
|
|
2973 }
|
|
|
2974
|
|
|
2975 {
|
|
|
2976 Bufpos cur_point = BUF_PT (buf);
|
|
|
2977 struct gcpro ngcpro1;
|
|
|
2978 Lisp_Object stream = make_filedesc_input_stream (fd, 0, total,
|
|
|
2979 LSTR_ALLOW_QUIT);
|
|
|
2980
|
|
|
2981 NGCPRO1 (stream);
|
|
|
2982 Lstream_set_buffering (XLSTREAM (stream), LSTREAM_BLOCKN_BUFFERED, 65536);
|
|
|
2983 #ifdef FILE_CODING
|
|
|
2984 stream = make_decoding_input_stream
|
|
|
2985 (XLSTREAM (stream), Fget_coding_system (codesys));
|
|
|
2986 Lstream_set_character_mode (XLSTREAM (stream));
|
|
|
2987 Lstream_set_buffering (XLSTREAM (stream), LSTREAM_BLOCKN_BUFFERED, 65536);
|
|
|
2988 #endif /* FILE_CODING */
|
|
|
2989
|
|
|
2990 record_unwind_protect (delete_stream_unwind, stream);
|
|
|
2991
|
|
|
2992 /* No need to limit the amount of stuff we attempt to read. (It would
|
|
|
2993 be incorrect, anyway, when Mule is enabled.) Instead, the limiting
|
|
|
2994 occurs inside of the filedesc stream. */
|
|
|
2995 while (1)
|
|
|
2996 {
|
|
|
2997 ssize_t this_len;
|
|
|
2998 Charcount cc_inserted;
|
|
|
2999
|
|
|
3000 QUIT;
|
|
|
3001 this_len = Lstream_read (XLSTREAM (stream), read_buf,
|
|
|
3002 sizeof (read_buf));
|
|
|
3003
|
|
|
3004 if (this_len <= 0)
|
|
|
3005 {
|
|
|
3006 if (this_len < 0)
|
|
|
3007 saverrno = errno;
|
|
|
3008 break;
|
|
|
3009 }
|
|
|
3010
|
|
|
3011 cc_inserted = buffer_insert_raw_string_1 (buf, cur_point, read_buf,
|
|
|
3012 this_len,
|
|
|
3013 !NILP (visit)
|
|
|
3014 ? INSDEL_NO_LOCKING : 0);
|
|
|
3015 inserted += cc_inserted;
|
|
|
3016 cur_point += cc_inserted;
|
|
|
3017 }
|
|
|
3018 #ifdef FILE_CODING
|
|
|
3019 if (!NILP (used_codesys))
|
|
|
3020 {
|
|
|
3021 Fset (used_codesys,
|
|
|
3022 XCODING_SYSTEM_NAME (decoding_stream_coding_system (XLSTREAM (stream))));
|
|
|
3023 }
|
|
|
3024 #endif /* FILE_CODING */
|
|
|
3025 NUNGCPRO;
|
|
|
3026 }
|
|
|
3027
|
|
|
3028 /* Close the file/stream */
|
|
|
3029 unbind_to (speccount, Qnil);
|
|
|
3030
|
|
|
3031 if (saverrno != 0)
|
|
|
3032 {
|
|
|
3033 error ("IO error reading %s: %s",
|
|
|
3034 XSTRING_DATA (filename), strerror (saverrno));
|
|
|
3035 }
|
|
|
3036
|
|
|
3037 notfound:
|
|
|
3038 handled:
|
|
|
3039
|
|
|
3040 end_multiple_change (buf, mc_count);
|
|
|
3041
|
|
|
3042 if (!NILP (visit))
|
|
|
3043 {
|
|
|
3044 if (!EQ (buf->undo_list, Qt))
|
|
|
3045 buf->undo_list = Qnil;
|
|
|
3046 if (NILP (handler))
|
|
|
3047 {
|
|
|
3048 buf->modtime = st.st_mtime;
|
|
|
3049 buf->filename = filename;
|
|
|
3050 /* XEmacs addition: */
|
|
|
3051 /* This function used to be in C, ostensibly so that
|
|
|
3052 it could be called here. But that's just silly.
|
|
|
3053 There's no reason C code can't call out to Lisp
|
|
|
3054 code, and it's a lot cleaner this way. */
|
|
444
|
3055 /* Note: compute-buffer-file-truename is called for
|
|
|
3056 side-effect! Its return value is intentionally
|
|
|
3057 ignored. */
|
|
428
|
3058 if (!NILP (Ffboundp (Qcompute_buffer_file_truename)))
|
|
|
3059 call1 (Qcompute_buffer_file_truename, make_buffer (buf));
|
|
|
3060 }
|
|
|
3061 BUF_SAVE_MODIFF (buf) = BUF_MODIFF (buf);
|
|
|
3062 buf->auto_save_modified = BUF_MODIFF (buf);
|
|
|
3063 buf->saved_size = make_int (BUF_SIZE (buf));
|
|
|
3064 #ifdef CLASH_DETECTION
|
|
|
3065 if (NILP (handler))
|
|
|
3066 {
|
|
|
3067 if (!NILP (buf->file_truename))
|
|
|
3068 unlock_file (buf->file_truename);
|
|
|
3069 unlock_file (filename);
|
|
|
3070 }
|
|
|
3071 #endif /* CLASH_DETECTION */
|
|
|
3072 if (not_regular)
|
|
|
3073 RETURN_UNGCPRO (Fsignal (Qfile_error,
|
|
|
3074 list2 (build_string ("not a regular file"),
|
|
|
3075 filename)));
|
|
|
3076
|
|
|
3077 /* If visiting nonexistent file, return nil. */
|
|
|
3078 if (buf->modtime == -1)
|
|
|
3079 report_file_error ("Opening input file",
|
|
|
3080 list1 (filename));
|
|
|
3081 }
|
|
|
3082
|
|
|
3083 /* Decode file format */
|
|
|
3084 if (inserted > 0)
|
|
|
3085 {
|
|
|
3086 Lisp_Object insval = call3 (Qformat_decode,
|
|
|
3087 Qnil, make_int (inserted), visit);
|
|
|
3088 CHECK_INT (insval);
|
|
|
3089 inserted = XINT (insval);
|
|
|
3090 }
|
|
|
3091
|
|
|
3092 if (inserted > 0)
|
|
|
3093 {
|
|
|
3094 Lisp_Object p;
|
|
|
3095 struct gcpro ngcpro1;
|
|
|
3096
|
|
|
3097 NGCPRO1 (p);
|
|
|
3098 EXTERNAL_LIST_LOOP (p, Vafter_insert_file_functions)
|
|
|
3099 {
|
|
|
3100 Lisp_Object insval =
|
|
|
3101 call1 (XCAR (p), make_int (inserted));
|
|
|
3102 if (!NILP (insval))
|
|
|
3103 {
|
|
|
3104 CHECK_NATNUM (insval);
|
|
|
3105 inserted = XINT (insval);
|
|
|
3106 }
|
|
|
3107 QUIT;
|
|
|
3108 }
|
|
|
3109 NUNGCPRO;
|
|
|
3110 }
|
|
|
3111
|
|
|
3112 UNGCPRO;
|
|
|
3113
|
|
|
3114 if (!NILP (val))
|
|
|
3115 return (val);
|
|
|
3116 else
|
|
|
3117 return (list2 (filename, make_int (inserted)));
|
|
|
3118 }
|
|
|
3119
|
|
|
3120
|
|
|
3121 static int a_write (Lisp_Object outstream, Lisp_Object instream, int pos,
|
|
|
3122 Lisp_Object *annot);
|
|
|
3123 static Lisp_Object build_annotations (Lisp_Object start, Lisp_Object end);
|
|
|
3124
|
|
|
3125 /* If build_annotations switched buffers, switch back to BUF.
|
|
|
3126 Kill the temporary buffer that was selected in the meantime. */
|
|
|
3127
|
|
|
3128 static Lisp_Object
|
|
|
3129 build_annotations_unwind (Lisp_Object buf)
|
|
|
3130 {
|
|
|
3131 Lisp_Object tembuf;
|
|
|
3132
|
|
|
3133 if (XBUFFER (buf) == current_buffer)
|
|
|
3134 return Qnil;
|
|
|
3135 tembuf = Fcurrent_buffer ();
|
|
|
3136 Fset_buffer (buf);
|
|
|
3137 Fkill_buffer (tembuf);
|
|
|
3138 return Qnil;
|
|
|
3139 }
|
|
|
3140
|
|
|
3141 DEFUN ("write-region-internal", Fwrite_region_internal, 3, 7,
|
|
|
3142 "r\nFWrite region to file: ", /*
|
|
|
3143 Write current region into specified file; no coding-system frobbing.
|
|
|
3144 This function is identical to `write-region' except for the handling
|
|
|
3145 of the CODESYS argument under XEmacs/Mule. (When Mule support is not
|
|
|
3146 present, both functions are identical and ignore the CODESYS argument.)
|
|
|
3147 If support for Mule exists in this Emacs, the file is encoded according
|
|
|
3148 to the value of CODESYS. If this is nil, no code conversion occurs.
|
|
|
3149 */
|
|
|
3150 (start, end, filename, append, visit, lockname, codesys))
|
|
|
3151 {
|
|
442
|
3152 /* This function can call lisp. GC checked 2000-07-28 ben */
|
|
428
|
3153 int desc;
|
|
|
3154 int failure;
|
|
|
3155 int save_errno = 0;
|
|
|
3156 struct stat st;
|
|
442
|
3157 Lisp_Object fn = Qnil;
|
|
428
|
3158 int speccount = specpdl_depth ();
|
|
|
3159 int visiting_other = STRINGP (visit);
|
|
|
3160 int visiting = (EQ (visit, Qt) || visiting_other);
|
|
|
3161 int quietly = (!visiting && !NILP (visit));
|
|
|
3162 Lisp_Object visit_file = Qnil;
|
|
|
3163 Lisp_Object annotations = Qnil;
|
|
|
3164 struct buffer *given_buffer;
|
|
|
3165 Bufpos start1, end1;
|
|
442
|
3166 struct gcpro gcpro1, gcpro2, gcpro3, gcpro4, gcpro5;
|
|
|
3167 struct gcpro ngcpro1, ngcpro2;
|
|
|
3168 Lisp_Object curbuf;
|
|
|
3169
|
|
|
3170 XSETBUFFER (curbuf, current_buffer);
|
|
|
3171
|
|
|
3172 /* start, end, visit, and append are never modified in this fun
|
|
|
3173 so we don't protect them. */
|
|
|
3174 GCPRO5 (visit_file, filename, codesys, lockname, annotations);
|
|
|
3175 NGCPRO2 (curbuf, fn);
|
|
|
3176
|
|
|
3177 /* [[ dmoore - if Fexpand_file_name or handlers kill the buffer,
|
|
428
|
3178 we should signal an error rather than blissfully continuing
|
|
|
3179 along. ARGH, this function is going to lose lose lose. We need
|
|
|
3180 to protect the current_buffer from being destroyed, but the
|
|
442
|
3181 multiple return points make this a pain in the butt. ]] we do
|
|
|
3182 protect curbuf now. --ben */
|
|
428
|
3183
|
|
|
3184 #ifdef FILE_CODING
|
|
|
3185 codesys = Fget_coding_system (codesys);
|
|
|
3186 #endif /* FILE_CODING */
|
|
|
3187
|
|
|
3188 if (current_buffer->base_buffer && ! NILP (visit))
|
|
442
|
3189 invalid_operation ("Cannot do file visiting in an indirect buffer",
|
|
|
3190 curbuf);
|
|
428
|
3191
|
|
|
3192 if (!NILP (start) && !STRINGP (start))
|
|
|
3193 get_buffer_range_char (current_buffer, start, end, &start1, &end1, 0);
|
|
|
3194
|
|
|
3195 {
|
|
|
3196 Lisp_Object handler;
|
|
|
3197
|
|
|
3198 if (visiting_other)
|
|
|
3199 visit_file = Fexpand_file_name (visit, Qnil);
|
|
|
3200 else
|
|
|
3201 visit_file = filename;
|
|
|
3202 filename = Fexpand_file_name (filename, Qnil);
|
|
|
3203
|
|
|
3204 if (NILP (lockname))
|
|
|
3205 lockname = visit_file;
|
|
|
3206
|
|
442
|
3207 /* We used to UNGCPRO here. BAD! visit_file is used below after
|
|
|
3208 more Lisp calling. */
|
|
428
|
3209 /* If the file name has special constructs in it,
|
|
|
3210 call the corresponding file handler. */
|
|
|
3211 handler = Ffind_file_name_handler (filename, Qwrite_region);
|
|
|
3212 /* If FILENAME has no handler, see if VISIT has one. */
|
|
|
3213 if (NILP (handler) && STRINGP (visit))
|
|
|
3214 handler = Ffind_file_name_handler (visit, Qwrite_region);
|
|
|
3215
|
|
|
3216 if (!NILP (handler))
|
|
|
3217 {
|
|
|
3218 Lisp_Object val = call8 (handler, Qwrite_region, start, end,
|
|
|
3219 filename, append, visit, lockname, codesys);
|
|
|
3220 if (visiting)
|
|
|
3221 {
|
|
|
3222 BUF_SAVE_MODIFF (current_buffer) = BUF_MODIFF (current_buffer);
|
|
|
3223 current_buffer->saved_size = make_int (BUF_SIZE (current_buffer));
|
|
|
3224 current_buffer->filename = visit_file;
|
|
|
3225 MARK_MODELINE_CHANGED;
|
|
|
3226 }
|
|
442
|
3227 NUNGCPRO;
|
|
|
3228 UNGCPRO;
|
|
428
|
3229 return val;
|
|
|
3230 }
|
|
|
3231 }
|
|
|
3232
|
|
|
3233 #ifdef CLASH_DETECTION
|
|
|
3234 if (!auto_saving)
|
|
442
|
3235 lock_file (lockname);
|
|
428
|
3236 #endif /* CLASH_DETECTION */
|
|
|
3237
|
|
|
3238 /* Special kludge to simplify auto-saving. */
|
|
|
3239 if (NILP (start))
|
|
|
3240 {
|
|
|
3241 start1 = BUF_BEG (current_buffer);
|
|
|
3242 end1 = BUF_Z (current_buffer);
|
|
|
3243 }
|
|
|
3244
|
|
|
3245 record_unwind_protect (build_annotations_unwind, Fcurrent_buffer ());
|
|
|
3246
|
|
|
3247 given_buffer = current_buffer;
|
|
|
3248 annotations = build_annotations (start, end);
|
|
|
3249 if (current_buffer != given_buffer)
|
|
|
3250 {
|
|
|
3251 start1 = BUF_BEGV (current_buffer);
|
|
|
3252 end1 = BUF_ZV (current_buffer);
|
|
|
3253 }
|
|
|
3254
|
|
|
3255 fn = filename;
|
|
|
3256 desc = -1;
|
|
|
3257 if (!NILP (append))
|
|
|
3258 {
|
|
|
3259 desc = open ((char *) XSTRING_DATA (fn), O_WRONLY | OPEN_BINARY, 0);
|
|
|
3260 }
|
|
|
3261 if (desc < 0)
|
|
|
3262 {
|
|
|
3263 desc = open ((char *) XSTRING_DATA (fn),
|
|
442
|
3264 O_WRONLY | O_TRUNC | O_CREAT | OPEN_BINARY,
|
|
|
3265 auto_saving ? auto_save_mode_bits : CREAT_MODE);
|
|
428
|
3266 }
|
|
|
3267
|
|
|
3268 if (desc < 0)
|
|
|
3269 {
|
|
|
3270 #ifdef CLASH_DETECTION
|
|
|
3271 save_errno = errno;
|
|
|
3272 if (!auto_saving) unlock_file (lockname);
|
|
|
3273 errno = save_errno;
|
|
|
3274 #endif /* CLASH_DETECTION */
|
|
|
3275 report_file_error ("Opening output file", list1 (filename));
|
|
|
3276 }
|
|
|
3277
|
|
|
3278 {
|
|
|
3279 Lisp_Object desc_locative = Fcons (make_int (desc), Qnil);
|
|
|
3280 Lisp_Object instream = Qnil, outstream = Qnil;
|
|
442
|
3281 struct gcpro nngcpro1, nngcpro2;
|
|
428
|
3282 /* need to gcpro; QUIT could happen out of call to write() */
|
|
442
|
3283 NNGCPRO2 (instream, outstream);
|
|
428
|
3284
|
|
|
3285 record_unwind_protect (close_file_unwind, desc_locative);
|
|
|
3286
|
|
|
3287 if (!NILP (append))
|
|
|
3288 {
|
|
|
3289 if (lseek (desc, 0, 2) < 0)
|
|
|
3290 {
|
|
|
3291 #ifdef CLASH_DETECTION
|
|
|
3292 if (!auto_saving) unlock_file (lockname);
|
|
|
3293 #endif /* CLASH_DETECTION */
|
|
|
3294 report_file_error ("Lseek error",
|
|
|
3295 list1 (filename));
|
|
|
3296 }
|
|
|
3297 }
|
|
|
3298
|
|
|
3299 failure = 0;
|
|
|
3300
|
|
|
3301 /* Note: I tried increasing the buffering size, along with
|
|
|
3302 various other tricks, but nothing seemed to make much of
|
|
|
3303 a difference in the time it took to save a large file.
|
|
|
3304 (Actually that's not true. With a local disk, changing
|
|
|
3305 the buffer size doesn't seem to make much difference.
|
|
|
3306 With an NFS-mounted disk, it could make a lot of difference
|
|
|
3307 because you're affecting the number of network requests
|
|
|
3308 that need to be made, and there could be a large latency
|
|
|
3309 for each request. So I've increased the buffer size
|
|
|
3310 to 64K.) */
|
|
|
3311 outstream = make_filedesc_output_stream (desc, 0, -1, 0);
|
|
|
3312 Lstream_set_buffering (XLSTREAM (outstream),
|
|
|
3313 LSTREAM_BLOCKN_BUFFERED, 65536);
|
|
|
3314 #ifdef FILE_CODING
|
|
|
3315 outstream =
|
|
|
3316 make_encoding_output_stream (XLSTREAM (outstream), codesys);
|
|
|
3317 Lstream_set_buffering (XLSTREAM (outstream),
|
|
|
3318 LSTREAM_BLOCKN_BUFFERED, 65536);
|
|
|
3319 #endif /* FILE_CODING */
|
|
|
3320 if (STRINGP (start))
|
|
|
3321 {
|
|
|
3322 instream = make_lisp_string_input_stream (start, 0, -1);
|
|
|
3323 start1 = 0;
|
|
|
3324 }
|
|
|
3325 else
|
|
|
3326 instream = make_lisp_buffer_input_stream (current_buffer, start1, end1,
|
|
|
3327 LSTR_SELECTIVE |
|
|
|
3328 LSTR_IGNORE_ACCESSIBLE);
|
|
|
3329 failure = (0 > (a_write (outstream, instream, start1,
|
|
|
3330 &annotations)));
|
|
|
3331 save_errno = errno;
|
|
|
3332 /* Note that this doesn't close the desc since we created the
|
|
|
3333 stream without the LSTR_CLOSING flag, but it does
|
|
|
3334 flush out any buffered data. */
|
|
|
3335 if (Lstream_close (XLSTREAM (outstream)) < 0)
|
|
|
3336 {
|
|
|
3337 failure = 1;
|
|
|
3338 save_errno = errno;
|
|
|
3339 }
|
|
|
3340 Lstream_close (XLSTREAM (instream));
|
|
|
3341
|
|
|
3342 #ifdef HAVE_FSYNC
|
|
|
3343 /* Note fsync appears to change the modtime on BSD4.2 (both vax and sun).
|
|
|
3344 Disk full in NFS may be reported here. */
|
|
|
3345 /* mib says that closing the file will try to write as fast as NFS can do
|
|
|
3346 it, and that means the fsync here is not crucial for autosave files. */
|
|
|
3347 if (!auto_saving && fsync (desc) < 0
|
|
|
3348 /* If fsync fails with EINTR, don't treat that as serious. */
|
|
|
3349 && errno != EINTR)
|
|
|
3350 {
|
|
|
3351 failure = 1;
|
|
|
3352 save_errno = errno;
|
|
|
3353 }
|
|
|
3354 #endif /* HAVE_FSYNC */
|
|
|
3355
|
|
440
|
3356 /* Spurious "file has changed on disk" warnings used to be seen on
|
|
|
3357 systems where close() can change the modtime. This is known to
|
|
|
3358 happen on various NFS file systems, on Windows, and on Linux.
|
|
|
3359 Rather than handling this on a per-system basis, we
|
|
442
|
3360 unconditionally do the xemacs_stat() after the close(). */
|
|
428
|
3361
|
|
|
3362 /* NFS can report a write failure now. */
|
|
|
3363 if (close (desc) < 0)
|
|
|
3364 {
|
|
|
3365 failure = 1;
|
|
|
3366 save_errno = errno;
|
|
|
3367 }
|
|
|
3368
|
|
|
3369 /* Discard the close unwind-protect. Execute the one for
|
|
|
3370 build_annotations (switches back to the original current buffer
|
|
|
3371 as necessary). */
|
|
|
3372 XCAR (desc_locative) = Qnil;
|
|
|
3373 unbind_to (speccount, Qnil);
|
|
442
|
3374
|
|
|
3375 NNUNGCPRO;
|
|
428
|
3376 }
|
|
|
3377
|
|
442
|
3378 xemacs_stat ((char *) XSTRING_DATA (fn), &st);
|
|
428
|
3379
|
|
|
3380 #ifdef CLASH_DETECTION
|
|
|
3381 if (!auto_saving)
|
|
|
3382 unlock_file (lockname);
|
|
|
3383 #endif /* CLASH_DETECTION */
|
|
|
3384
|
|
|
3385 /* Do this before reporting IO error
|
|
|
3386 to avoid a "file has changed on disk" warning on
|
|
|
3387 next attempt to save. */
|
|
|
3388 if (visiting)
|
|
|
3389 current_buffer->modtime = st.st_mtime;
|
|
|
3390
|
|
|
3391 if (failure)
|
|
442
|
3392 {
|
|
|
3393 errno = save_errno;
|
|
|
3394 report_file_error ("Writing file", list1 (fn));
|
|
|
3395 }
|
|
428
|
3396
|
|
|
3397 if (visiting)
|
|
|
3398 {
|
|
|
3399 BUF_SAVE_MODIFF (current_buffer) = BUF_MODIFF (current_buffer);
|
|
|
3400 current_buffer->saved_size = make_int (BUF_SIZE (current_buffer));
|
|
|
3401 current_buffer->filename = visit_file;
|
|
|
3402 MARK_MODELINE_CHANGED;
|
|
|
3403 }
|
|
|
3404 else if (quietly)
|
|
|
3405 {
|
|
442
|
3406 NUNGCPRO;
|
|
|
3407 UNGCPRO;
|
|
428
|
3408 return Qnil;
|
|
|
3409 }
|
|
|
3410
|
|
|
3411 if (!auto_saving)
|
|
|
3412 {
|
|
|
3413 if (visiting_other)
|
|
|
3414 message ("Wrote %s", XSTRING_DATA (visit_file));
|
|
|
3415 else
|
|
|
3416 {
|
|
446
|
3417 Lisp_Object fsp = Qnil;
|
|
442
|
3418 struct gcpro nngcpro1;
|
|
|
3419
|
|
|
3420 NNGCPRO1 (fsp);
|
|
428
|
3421 fsp = Ffile_symlink_p (fn);
|
|
|
3422 if (NILP (fsp))
|
|
|
3423 message ("Wrote %s", XSTRING_DATA (fn));
|
|
|
3424 else
|
|
|
3425 message ("Wrote %s (symlink to %s)",
|
|
|
3426 XSTRING_DATA (fn), XSTRING_DATA (fsp));
|
|
442
|
3427 NNUNGCPRO;
|
|
428
|
3428 }
|
|
|
3429 }
|
|
442
|
3430 NUNGCPRO;
|
|
|
3431 UNGCPRO;
|
|
428
|
3432 return Qnil;
|
|
|
3433 }
|
|
|
3434
|
|
|
3435 /* #### This is such a load of shit!!!! There is no way we should define
|
|
|
3436 something so stupid as a subr, just sort the fucking list more
|
|
|
3437 intelligently. */
|
|
|
3438 DEFUN ("car-less-than-car", Fcar_less_than_car, 2, 2, 0, /*
|
|
|
3439 Return t if (car A) is numerically less than (car B).
|
|
|
3440 */
|
|
|
3441 (a, b))
|
|
|
3442 {
|
|
|
3443 Lisp_Object objs[2];
|
|
|
3444 objs[0] = Fcar (a);
|
|
|
3445 objs[1] = Fcar (b);
|
|
|
3446 return Flss (2, objs);
|
|
|
3447 }
|
|
|
3448
|
|
|
3449 /* Heh heh heh, let's define this too, just to aggravate the person who
|
|
|
3450 wrote the above comment. */
|
|
|
3451 DEFUN ("cdr-less-than-cdr", Fcdr_less_than_cdr, 2, 2, 0, /*
|
|
|
3452 Return t if (cdr A) is numerically less than (cdr B).
|
|
|
3453 */
|
|
|
3454 (a, b))
|
|
|
3455 {
|
|
|
3456 Lisp_Object objs[2];
|
|
|
3457 objs[0] = Fcdr (a);
|
|
|
3458 objs[1] = Fcdr (b);
|
|
|
3459 return Flss (2, objs);
|
|
|
3460 }
|
|
|
3461
|
|
|
3462 /* Build the complete list of annotations appropriate for writing out
|
|
|
3463 the text between START and END, by calling all the functions in
|
|
|
3464 write-region-annotate-functions and merging the lists they return.
|
|
|
3465 If one of these functions switches to a different buffer, we assume
|
|
|
3466 that buffer contains altered text. Therefore, the caller must
|
|
|
3467 make sure to restore the current buffer in all cases,
|
|
|
3468 as save-excursion would do. */
|
|
|
3469
|
|
|
3470 static Lisp_Object
|
|
|
3471 build_annotations (Lisp_Object start, Lisp_Object end)
|
|
|
3472 {
|
|
|
3473 /* This function can GC */
|
|
|
3474 Lisp_Object annotations;
|
|
|
3475 Lisp_Object p, res;
|
|
|
3476 struct gcpro gcpro1, gcpro2;
|
|
|
3477 Lisp_Object original_buffer;
|
|
|
3478
|
|
|
3479 XSETBUFFER (original_buffer, current_buffer);
|
|
|
3480
|
|
|
3481 annotations = Qnil;
|
|
|
3482 p = Vwrite_region_annotate_functions;
|
|
|
3483 GCPRO2 (annotations, p);
|
|
|
3484 while (!NILP (p))
|
|
|
3485 {
|
|
|
3486 struct buffer *given_buffer = current_buffer;
|
|
|
3487 Vwrite_region_annotations_so_far = annotations;
|
|
|
3488 res = call2 (Fcar (p), start, end);
|
|
|
3489 /* If the function makes a different buffer current,
|
|
|
3490 assume that means this buffer contains altered text to be output.
|
|
|
3491 Reset START and END from the buffer bounds
|
|
|
3492 and discard all previous annotations because they should have
|
|
|
3493 been dealt with by this function. */
|
|
|
3494 if (current_buffer != given_buffer)
|
|
|
3495 {
|
|
|
3496 start = make_int (BUF_BEGV (current_buffer));
|
|
|
3497 end = make_int (BUF_ZV (current_buffer));
|
|
|
3498 annotations = Qnil;
|
|
|
3499 }
|
|
|
3500 Flength (res); /* Check basic validity of return value */
|
|
|
3501 annotations = merge (annotations, res, Qcar_less_than_car);
|
|
|
3502 p = Fcdr (p);
|
|
|
3503 }
|
|
|
3504
|
|
|
3505 /* Now do the same for annotation functions implied by the file-format */
|
|
|
3506 if (auto_saving && (!EQ (Vauto_save_file_format, Qt)))
|
|
|
3507 p = Vauto_save_file_format;
|
|
|
3508 else
|
|
|
3509 p = current_buffer->file_format;
|
|
|
3510 while (!NILP (p))
|
|
|
3511 {
|
|
|
3512 struct buffer *given_buffer = current_buffer;
|
|
|
3513 Vwrite_region_annotations_so_far = annotations;
|
|
|
3514 res = call4 (Qformat_annotate_function, Fcar (p), start, end,
|
|
|
3515 original_buffer);
|
|
|
3516 if (current_buffer != given_buffer)
|
|
|
3517 {
|
|
|
3518 start = make_int (BUF_BEGV (current_buffer));
|
|
|
3519 end = make_int (BUF_ZV (current_buffer));
|
|
|
3520 annotations = Qnil;
|
|
|
3521 }
|
|
|
3522 Flength (res);
|
|
|
3523 annotations = merge (annotations, res, Qcar_less_than_car);
|
|
|
3524 p = Fcdr (p);
|
|
|
3525 }
|
|
|
3526 UNGCPRO;
|
|
|
3527 return annotations;
|
|
|
3528 }
|
|
|
3529
|
|
|
3530 /* Write to stream OUTSTREAM the characters from INSTREAM (it is read until
|
|
|
3531 EOF is encountered), assuming they start at position POS in the buffer
|
|
|
3532 of string that STREAM refers to. Intersperse with them the annotations
|
|
|
3533 from *ANNOT that fall into the range of positions we are reading from,
|
|
|
3534 each at its appropriate position.
|
|
|
3535
|
|
|
3536 Modify *ANNOT by discarding elements as we output them.
|
|
|
3537 The return value is negative in case of system call failure. */
|
|
|
3538
|
|
|
3539 /* 4K should probably be fine. We just need to reduce the number of
|
|
|
3540 function calls to reasonable level. The Lstream stuff itself will
|
|
|
3541 batch to 64K to reduce the number of system calls. */
|
|
|
3542
|
|
|
3543 #define A_WRITE_BATCH_SIZE 4096
|
|
|
3544
|
|
|
3545 static int
|
|
|
3546 a_write (Lisp_Object outstream, Lisp_Object instream, int pos,
|
|
|
3547 Lisp_Object *annot)
|
|
|
3548 {
|
|
|
3549 Lisp_Object tem;
|
|
|
3550 int nextpos;
|
|
|
3551 unsigned char largebuf[A_WRITE_BATCH_SIZE];
|
|
|
3552 Lstream *instr = XLSTREAM (instream);
|
|
|
3553 Lstream *outstr = XLSTREAM (outstream);
|
|
|
3554
|
|
|
3555 while (LISTP (*annot))
|
|
|
3556 {
|
|
|
3557 tem = Fcar_safe (Fcar (*annot));
|
|
|
3558 if (INTP (tem))
|
|
|
3559 nextpos = XINT (tem);
|
|
|
3560 else
|
|
|
3561 nextpos = INT_MAX;
|
|
|
3562 #ifdef MULE
|
|
|
3563 /* If there are annotations left and we have Mule, then we
|
|
|
3564 have to do the I/O one emchar at a time so we can
|
|
|
3565 determine when to insert the annotation. */
|
|
|
3566 if (!NILP (*annot))
|
|
|
3567 {
|
|
|
3568 Emchar ch;
|
|
|
3569 while (pos != nextpos && (ch = Lstream_get_emchar (instr)) != EOF)
|
|
|
3570 {
|
|
|
3571 if (Lstream_put_emchar (outstr, ch) < 0)
|
|
|
3572 return -1;
|
|
|
3573 pos++;
|
|
|
3574 }
|
|
|
3575 }
|
|
|
3576 else
|
|
|
3577 #endif /* MULE */
|
|
|
3578 {
|
|
|
3579 while (pos != nextpos)
|
|
|
3580 {
|
|
|
3581 /* Otherwise there is no point to that. Just go in batches. */
|
|
|
3582 int chunk = min (nextpos - pos, A_WRITE_BATCH_SIZE);
|
|
|
3583
|
|
|
3584 chunk = Lstream_read (instr, largebuf, chunk);
|
|
|
3585 if (chunk < 0)
|
|
|
3586 return -1;
|
|
|
3587 if (chunk == 0) /* EOF */
|
|
|
3588 break;
|
|
|
3589 if (Lstream_write (outstr, largebuf, chunk) < chunk)
|
|
|
3590 return -1;
|
|
|
3591 pos += chunk;
|
|
|
3592 }
|
|
|
3593 }
|
|
|
3594 if (pos == nextpos)
|
|
|
3595 {
|
|
|
3596 tem = Fcdr (Fcar (*annot));
|
|
|
3597 if (STRINGP (tem))
|
|
|
3598 {
|
|
|
3599 if (Lstream_write (outstr, XSTRING_DATA (tem),
|
|
|
3600 XSTRING_LENGTH (tem)) < 0)
|
|
|
3601 return -1;
|
|
|
3602 }
|
|
|
3603 *annot = Fcdr (*annot);
|
|
|
3604 }
|
|
|
3605 else
|
|
|
3606 return 0;
|
|
|
3607 }
|
|
|
3608 return -1;
|
|
|
3609 }
|
|
|
3610
|
|
|
3611
|
|
|
3612
|
|
|
3613 #if 0
|
|
|
3614 #include <des_crypt.h>
|
|
|
3615
|
|
|
3616 #define CRYPT_BLOCK_SIZE 8 /* bytes */
|
|
|
3617 #define CRYPT_KEY_SIZE 8 /* bytes */
|
|
|
3618
|
|
|
3619 DEFUN ("encrypt-string", Fencrypt_string, 2, 2, 0, /*
|
|
|
3620 Encrypt STRING using KEY.
|
|
|
3621 */
|
|
|
3622 (string, key))
|
|
|
3623 {
|
|
|
3624 char *encrypted_string, *raw_key;
|
|
|
3625 int rounded_size, extra, key_size;
|
|
|
3626
|
|
|
3627 /* !!#### May produce bogus data under Mule. */
|
|
|
3628 CHECK_STRING (string);
|
|
|
3629 CHECK_STRING (key);
|
|
|
3630
|
|
|
3631 extra = XSTRING_LENGTH (string) % CRYPT_BLOCK_SIZE;
|
|
|
3632 rounded_size = XSTRING_LENGTH (string) + extra;
|
|
|
3633 encrypted_string = alloca (rounded_size + 1);
|
|
|
3634 memcpy (encrypted_string, XSTRING_DATA (string), XSTRING_LENGTH (string));
|
|
|
3635 memset (encrypted_string + rounded_size - extra, 0, extra + 1);
|
|
|
3636
|
|
|
3637 key_size = min (CRYPT_KEY_SIZE, XSTRING_LENGTH (key))
|
|
|
3638
|
|
|
3639 raw_key = alloca (CRYPT_KEY_SIZE + 1);
|
|
|
3640 memcpy (raw_key, XSTRING_DATA (key), key_size);
|
|
|
3641 memset (raw_key + key_size, 0, (CRYPT_KEY_SIZE + 1) - key_size);
|
|
|
3642
|
|
|
3643 ecb_crypt (raw_key, encrypted_string, rounded_size,
|
|
|
3644 DES_ENCRYPT | DES_SW);
|
|
|
3645 return make_string (encrypted_string, rounded_size);
|
|
|
3646 }
|
|
|
3647
|
|
|
3648 DEFUN ("decrypt-string", Fdecrypt_string, 2, 2, 0, /*
|
|
|
3649 Decrypt STRING using KEY.
|
|
|
3650 */
|
|
|
3651 (string, key))
|
|
|
3652 {
|
|
|
3653 char *decrypted_string, *raw_key;
|
|
|
3654 int string_size, key_size;
|
|
|
3655
|
|
|
3656 CHECK_STRING (string);
|
|
|
3657 CHECK_STRING (key);
|
|
|
3658
|
|
|
3659 string_size = XSTRING_LENGTH (string) + 1;
|
|
|
3660 decrypted_string = alloca (string_size);
|
|
|
3661 memcpy (decrypted_string, XSTRING_DATA (string), string_size);
|
|
|
3662 decrypted_string[string_size - 1] = '\0';
|
|
|
3663
|
|
|
3664 key_size = min (CRYPT_KEY_SIZE, XSTRING_LENGTH (key))
|
|
|
3665
|
|
|
3666 raw_key = alloca (CRYPT_KEY_SIZE + 1);
|
|
|
3667 memcpy (raw_key, XSTRING_DATA (key), key_size);
|
|
|
3668 memset (raw_key + key_size, 0, (CRYPT_KEY_SIZE + 1) - key_size);
|
|
|
3669
|
|
|
3670
|
|
|
3671 ecb_crypt (raw_key, decrypted_string, string_size, D | DES_SW);
|
|
|
3672 return make_string (decrypted_string, string_size - 1);
|
|
|
3673 }
|
|
|
3674 #endif /* 0 */
|
|
|
3675
|
|
|
3676
|
|
|
3677 DEFUN ("verify-visited-file-modtime", Fverify_visited_file_modtime, 1, 1, 0, /*
|
|
444
|
3678 Return t if last mod time of BUFFER's visited file matches what BUFFER records.
|
|
428
|
3679 This means that the file has not been changed since it was visited or saved.
|
|
|
3680 */
|
|
444
|
3681 (buffer))
|
|
428
|
3682 {
|
|
442
|
3683 /* This function can call lisp; GC checked 2000-07-11 ben */
|
|
428
|
3684 struct buffer *b;
|
|
|
3685 struct stat st;
|
|
|
3686 Lisp_Object handler;
|
|
|
3687
|
|
444
|
3688 CHECK_BUFFER (buffer);
|
|
|
3689 b = XBUFFER (buffer);
|
|
428
|
3690
|
|
|
3691 if (!STRINGP (b->filename)) return Qt;
|
|
|
3692 if (b->modtime == 0) return Qt;
|
|
|
3693
|
|
|
3694 /* If the file name has special constructs in it,
|
|
|
3695 call the corresponding file handler. */
|
|
|
3696 handler = Ffind_file_name_handler (b->filename,
|
|
|
3697 Qverify_visited_file_modtime);
|
|
|
3698 if (!NILP (handler))
|
|
444
|
3699 return call2 (handler, Qverify_visited_file_modtime, buffer);
|
|
428
|
3700
|
|
442
|
3701 if (xemacs_stat ((char *) XSTRING_DATA (b->filename), &st) < 0)
|
|
428
|
3702 {
|
|
|
3703 /* If the file doesn't exist now and didn't exist before,
|
|
|
3704 we say that it isn't modified, provided the error is a tame one. */
|
|
|
3705 if (errno == ENOENT || errno == EACCES || errno == ENOTDIR)
|
|
|
3706 st.st_mtime = -1;
|
|
|
3707 else
|
|
|
3708 st.st_mtime = 0;
|
|
|
3709 }
|
|
|
3710 if (st.st_mtime == b->modtime
|
|
|
3711 /* If both are positive, accept them if they are off by one second. */
|
|
|
3712 || (st.st_mtime > 0 && b->modtime > 0
|
|
|
3713 && (st.st_mtime == b->modtime + 1
|
|
|
3714 || st.st_mtime == b->modtime - 1)))
|
|
|
3715 return Qt;
|
|
|
3716 return Qnil;
|
|
|
3717 }
|
|
|
3718
|
|
|
3719 DEFUN ("clear-visited-file-modtime", Fclear_visited_file_modtime, 0, 0, 0, /*
|
|
|
3720 Clear out records of last mod time of visited file.
|
|
|
3721 Next attempt to save will certainly not complain of a discrepancy.
|
|
|
3722 */
|
|
|
3723 ())
|
|
|
3724 {
|
|
|
3725 current_buffer->modtime = 0;
|
|
|
3726 return Qnil;
|
|
|
3727 }
|
|
|
3728
|
|
|
3729 DEFUN ("visited-file-modtime", Fvisited_file_modtime, 0, 0, 0, /*
|
|
|
3730 Return the current buffer's recorded visited file modification time.
|
|
|
3731 The value is a list of the form (HIGH . LOW), like the time values
|
|
|
3732 that `file-attributes' returns.
|
|
|
3733 */
|
|
|
3734 ())
|
|
|
3735 {
|
|
|
3736 return time_to_lisp ((time_t) current_buffer->modtime);
|
|
|
3737 }
|
|
|
3738
|
|
|
3739 DEFUN ("set-visited-file-modtime", Fset_visited_file_modtime, 0, 1, 0, /*
|
|
|
3740 Update buffer's recorded modification time from the visited file's time.
|
|
|
3741 Useful if the buffer was not read from the file normally
|
|
|
3742 or if the file itself has been changed for some known benign reason.
|
|
|
3743 An argument specifies the modification time value to use
|
|
|
3744 \(instead of that of the visited file), in the form of a list
|
|
|
3745 \(HIGH . LOW) or (HIGH LOW).
|
|
|
3746 */
|
|
|
3747 (time_list))
|
|
|
3748 {
|
|
|
3749 /* This function can call lisp */
|
|
|
3750 if (!NILP (time_list))
|
|
|
3751 {
|
|
|
3752 time_t the_time;
|
|
|
3753 lisp_to_time (time_list, &the_time);
|
|
|
3754 current_buffer->modtime = (int) the_time;
|
|
|
3755 }
|
|
|
3756 else
|
|
|
3757 {
|
|
446
|
3758 Lisp_Object filename = Qnil;
|
|
428
|
3759 struct stat st;
|
|
|
3760 Lisp_Object handler;
|
|
|
3761 struct gcpro gcpro1, gcpro2, gcpro3;
|
|
|
3762
|
|
|
3763 GCPRO3 (filename, time_list, current_buffer->filename);
|
|
|
3764 filename = Fexpand_file_name (current_buffer->filename, Qnil);
|
|
|
3765
|
|
|
3766 /* If the file name has special constructs in it,
|
|
|
3767 call the corresponding file handler. */
|
|
|
3768 handler = Ffind_file_name_handler (filename, Qset_visited_file_modtime);
|
|
|
3769 UNGCPRO;
|
|
|
3770 if (!NILP (handler))
|
|
|
3771 /* The handler can find the file name the same way we did. */
|
|
|
3772 return call2 (handler, Qset_visited_file_modtime, Qnil);
|
|
442
|
3773 else if (xemacs_stat ((char *) XSTRING_DATA (filename), &st) >= 0)
|
|
428
|
3774 current_buffer->modtime = st.st_mtime;
|
|
|
3775 }
|
|
|
3776
|
|
|
3777 return Qnil;
|
|
|
3778 }
|
|
|
3779
|
|
|
3780 static Lisp_Object
|
|
|
3781 auto_save_error (Lisp_Object condition_object, Lisp_Object ignored)
|
|
|
3782 {
|
|
|
3783 /* This function can call lisp */
|
|
|
3784 if (gc_in_progress)
|
|
|
3785 return Qnil;
|
|
|
3786 /* Don't try printing an error message after everything is gone! */
|
|
|
3787 if (preparing_for_armageddon)
|
|
|
3788 return Qnil;
|
|
|
3789 clear_echo_area (selected_frame (), Qauto_saving, 1);
|
|
|
3790 Fding (Qt, Qauto_save_error, Qnil);
|
|
|
3791 message ("Auto-saving...error for %s", XSTRING_DATA (current_buffer->name));
|
|
|
3792 Fsleep_for (make_int (1));
|
|
|
3793 message ("Auto-saving...error!for %s", XSTRING_DATA (current_buffer->name));
|
|
|
3794 Fsleep_for (make_int (1));
|
|
|
3795 message ("Auto-saving...error for %s", XSTRING_DATA (current_buffer->name));
|
|
|
3796 Fsleep_for (make_int (1));
|
|
|
3797 return Qnil;
|
|
|
3798 }
|
|
|
3799
|
|
|
3800 static Lisp_Object
|
|
|
3801 auto_save_1 (Lisp_Object ignored)
|
|
|
3802 {
|
|
|
3803 /* This function can call lisp */
|
|
|
3804 /* #### I think caller is protecting current_buffer? */
|
|
|
3805 struct stat st;
|
|
|
3806 Lisp_Object fn = current_buffer->filename;
|
|
|
3807 Lisp_Object a = current_buffer->auto_save_file_name;
|
|
|
3808
|
|
|
3809 if (!STRINGP (a))
|
|
|
3810 return (Qnil);
|
|
|
3811
|
|
|
3812 /* Get visited file's mode to become the auto save file's mode. */
|
|
|
3813 if (STRINGP (fn) &&
|
|
442
|
3814 xemacs_stat ((char *) XSTRING_DATA (fn), &st) >= 0)
|
|
428
|
3815 /* But make sure we can overwrite it later! */
|
|
|
3816 auto_save_mode_bits = st.st_mode | 0600;
|
|
|
3817 else
|
|
|
3818 /* default mode for auto-save files of buffers with no file is
|
|
|
3819 readable by owner only. This may annoy some small number of
|
|
|
3820 people, but the alternative removes all privacy from email. */
|
|
|
3821 auto_save_mode_bits = 0600;
|
|
|
3822
|
|
|
3823 return
|
|
|
3824 /* !!#### need to deal with this 'escape-quoted everywhere */
|
|
|
3825 Fwrite_region_internal (Qnil, Qnil, a, Qnil, Qlambda, Qnil,
|
|
|
3826 #ifdef MULE
|
|
|
3827 Qescape_quoted
|
|
|
3828 #else
|
|
|
3829 Qnil
|
|
|
3830 #endif
|
|
|
3831 );
|
|
|
3832 }
|
|
|
3833
|
|
|
3834 static Lisp_Object
|
|
|
3835 auto_save_expand_name_error (Lisp_Object condition_object, Lisp_Object ignored)
|
|
|
3836 {
|
|
|
3837 /* #### this function should spew an error message about not being
|
|
|
3838 able to open the .saves file. */
|
|
|
3839 return Qnil;
|
|
|
3840 }
|
|
|
3841
|
|
|
3842 static Lisp_Object
|
|
|
3843 auto_save_expand_name (Lisp_Object name)
|
|
|
3844 {
|
|
|
3845 struct gcpro gcpro1;
|
|
|
3846
|
|
|
3847 /* note that caller did NOT gc protect name, so we do it. */
|
|
|
3848 /* #### dmoore - this might not be necessary, if condition_case_1
|
|
|
3849 protects it. but I don't think it does. */
|
|
|
3850 GCPRO1 (name);
|
|
|
3851 RETURN_UNGCPRO (Fexpand_file_name (name, Qnil));
|
|
|
3852 }
|
|
|
3853
|
|
|
3854
|
|
|
3855 static Lisp_Object
|
|
|
3856 do_auto_save_unwind (Lisp_Object fd)
|
|
|
3857 {
|
|
|
3858 close (XINT (fd));
|
|
|
3859 return (fd);
|
|
|
3860 }
|
|
|
3861
|
|
|
3862 static Lisp_Object
|
|
|
3863 do_auto_save_unwind_2 (Lisp_Object old_auto_saving)
|
|
|
3864 {
|
|
|
3865 auto_saving = XINT (old_auto_saving);
|
|
|
3866 return Qnil;
|
|
|
3867 }
|
|
|
3868
|
|
|
3869 /* Fdo_auto_save() checks whether a GC is in progress when it is called,
|
|
|
3870 and if so, tries to avoid touching lisp objects.
|
|
|
3871
|
|
|
3872 The only time that Fdo_auto_save() is called while GC is in progress
|
|
|
3873 is if we're going down, as a result of an abort() or a kill signal.
|
|
|
3874 It's fairly important that we generate autosave files in that case!
|
|
|
3875 */
|
|
|
3876
|
|
|
3877 DEFUN ("do-auto-save", Fdo_auto_save, 0, 2, "", /*
|
|
|
3878 Auto-save all buffers that need it.
|
|
|
3879 This is all buffers that have auto-saving enabled
|
|
|
3880 and are changed since last auto-saved.
|
|
|
3881 Auto-saving writes the buffer into a file
|
|
|
3882 so that your editing is not lost if the system crashes.
|
|
|
3883 This file is not the file you visited; that changes only when you save.
|
|
|
3884 Normally we run the normal hook `auto-save-hook' before saving.
|
|
|
3885
|
|
|
3886 Non-nil first argument means do not print any message if successful.
|
|
|
3887 Non-nil second argument means save only current buffer.
|
|
|
3888 */
|
|
|
3889 (no_message, current_only))
|
|
|
3890 {
|
|
|
3891 /* This function can call lisp */
|
|
|
3892 struct buffer *b;
|
|
|
3893 Lisp_Object tail, buf;
|
|
|
3894 int auto_saved = 0;
|
|
|
3895 int do_handled_files;
|
|
|
3896 Lisp_Object oquit = Qnil;
|
|
|
3897 Lisp_Object listfile = Qnil;
|
|
|
3898 Lisp_Object old;
|
|
|
3899 int listdesc = -1;
|
|
|
3900 int speccount = specpdl_depth ();
|
|
|
3901 struct gcpro gcpro1, gcpro2, gcpro3;
|
|
|
3902
|
|
|
3903 XSETBUFFER (old, current_buffer);
|
|
|
3904 GCPRO3 (oquit, listfile, old);
|
|
|
3905 check_quit (); /* make Vquit_flag accurate */
|
|
|
3906 /* Ordinarily don't quit within this function,
|
|
|
3907 but don't make it impossible to quit (in case we get hung in I/O). */
|
|
|
3908 oquit = Vquit_flag;
|
|
|
3909 Vquit_flag = Qnil;
|
|
|
3910
|
|
|
3911 /* No further GCPRO needed, because (when it matters) all Lisp_Object
|
|
|
3912 variables point to non-strings reached from Vbuffer_alist. */
|
|
|
3913
|
|
|
3914 if (minibuf_level != 0 || preparing_for_armageddon)
|
|
|
3915 no_message = Qt;
|
|
|
3916
|
|
|
3917 run_hook (Qauto_save_hook);
|
|
|
3918
|
|
|
3919 if (STRINGP (Vauto_save_list_file_name))
|
|
|
3920 listfile = condition_case_1 (Qt,
|
|
|
3921 auto_save_expand_name,
|
|
|
3922 Vauto_save_list_file_name,
|
|
|
3923 auto_save_expand_name_error, Qnil);
|
|
|
3924
|
|
|
3925 /* Make sure auto_saving is reset. */
|
|
|
3926 record_unwind_protect (do_auto_save_unwind_2, make_int (auto_saving));
|
|
|
3927
|
|
|
3928 auto_saving = 1;
|
|
|
3929
|
|
|
3930 /* First, save all files which don't have handlers. If Emacs is
|
|
|
3931 crashing, the handlers may tweak what is causing Emacs to crash
|
|
|
3932 in the first place, and it would be a shame if Emacs failed to
|
|
|
3933 autosave perfectly ordinary files because it couldn't handle some
|
|
|
3934 ange-ftp'd file. */
|
|
|
3935 for (do_handled_files = 0; do_handled_files < 2; do_handled_files++)
|
|
|
3936 {
|
|
|
3937 for (tail = Vbuffer_alist;
|
|
|
3938 CONSP (tail);
|
|
|
3939 tail = XCDR (tail))
|
|
|
3940 {
|
|
|
3941 buf = XCDR (XCAR (tail));
|
|
|
3942 b = XBUFFER (buf);
|
|
|
3943
|
|
|
3944 if (!NILP (current_only)
|
|
|
3945 && b != current_buffer)
|
|
|
3946 continue;
|
|
|
3947
|
|
|
3948 /* Don't auto-save indirect buffers.
|
|
|
3949 The base buffer takes care of it. */
|
|
|
3950 if (b->base_buffer)
|
|
|
3951 continue;
|
|
|
3952
|
|
|
3953 /* Check for auto save enabled
|
|
|
3954 and file changed since last auto save
|
|
|
3955 and file changed since last real save. */
|
|
|
3956 if (STRINGP (b->auto_save_file_name)
|
|
|
3957 && BUF_SAVE_MODIFF (b) < BUF_MODIFF (b)
|
|
|
3958 && b->auto_save_modified < BUF_MODIFF (b)
|
|
|
3959 /* -1 means we've turned off autosaving for a while--see below. */
|
|
|
3960 && XINT (b->saved_size) >= 0
|
|
|
3961 && (do_handled_files
|
|
|
3962 || NILP (Ffind_file_name_handler (b->auto_save_file_name,
|
|
|
3963 Qwrite_region))))
|
|
|
3964 {
|
|
|
3965 EMACS_TIME before_time, after_time;
|
|
|
3966
|
|
|
3967 EMACS_GET_TIME (before_time);
|
|
|
3968 /* If we had a failure, don't try again for 20 minutes. */
|
|
|
3969 if (!preparing_for_armageddon
|
|
|
3970 && b->auto_save_failure_time >= 0
|
|
|
3971 && (EMACS_SECS (before_time) - b->auto_save_failure_time <
|
|
|
3972 1200))
|
|
|
3973 continue;
|
|
|
3974
|
|
|
3975 if (!preparing_for_armageddon &&
|
|
|
3976 (XINT (b->saved_size) * 10
|
|
|
3977 > (BUF_Z (b) - BUF_BEG (b)) * 13)
|
|
|
3978 /* A short file is likely to change a large fraction;
|
|
|
3979 spare the user annoying messages. */
|
|
|
3980 && XINT (b->saved_size) > 5000
|
|
|
3981 /* These messages are frequent and annoying for `*mail*'. */
|
|
|
3982 && !NILP (b->filename)
|
|
|
3983 && NILP (no_message)
|
|
|
3984 && disable_auto_save_when_buffer_shrinks)
|
|
|
3985 {
|
|
|
3986 /* It has shrunk too much; turn off auto-saving here.
|
|
|
3987 Unless we're about to crash, in which case auto-save it
|
|
|
3988 anyway.
|
|
|
3989 */
|
|
|
3990 message
|
|
|
3991 ("Buffer %s has shrunk a lot; auto save turned off there",
|
|
|
3992 XSTRING_DATA (b->name));
|
|
|
3993 /* Turn off auto-saving until there's a real save,
|
|
|
3994 and prevent any more warnings. */
|
|
|
3995 b->saved_size = make_int (-1);
|
|
|
3996 if (!gc_in_progress)
|
|
|
3997 Fsleep_for (make_int (1));
|
|
|
3998 continue;
|
|
|
3999 }
|
|
|
4000 set_buffer_internal (b);
|
|
|
4001 if (!auto_saved && NILP (no_message))
|
|
|
4002 {
|
|
442
|
4003 static const unsigned char *msg
|
|
|
4004 = (const unsigned char *) "Auto-saving...";
|
|
428
|
4005 echo_area_message (selected_frame (), msg, Qnil,
|
|
442
|
4006 0, strlen ((const char *) msg),
|
|
428
|
4007 Qauto_saving);
|
|
|
4008 }
|
|
|
4009
|
|
|
4010 /* Open the auto-save list file, if necessary.
|
|
|
4011 We only do this now so that the file only exists
|
|
|
4012 if we actually auto-saved any files. */
|
|
444
|
4013 if (!auto_saved && !inhibit_auto_save_session
|
|
|
4014 && !NILP (Vauto_save_list_file_prefix)
|
|
|
4015 && STRINGP (listfile) && listdesc < 0)
|
|
428
|
4016 {
|
|
|
4017 listdesc = open ((char *) XSTRING_DATA (listfile),
|
|
|
4018 O_WRONLY | O_TRUNC | O_CREAT | OPEN_BINARY,
|
|
|
4019 CREAT_MODE);
|
|
|
4020
|
|
|
4021 /* Arrange to close that file whether or not we get
|
|
|
4022 an error. */
|
|
|
4023 if (listdesc >= 0)
|
|
|
4024 record_unwind_protect (do_auto_save_unwind,
|
|
|
4025 make_int (listdesc));
|
|
|
4026 }
|
|
|
4027
|
|
|
4028 /* Record all the buffers that we are auto-saving in
|
|
|
4029 the special file that lists them. For each of
|
|
|
4030 these buffers, record visited name (if any) and
|
|
|
4031 auto save name. */
|
|
|
4032 if (listdesc >= 0)
|
|
|
4033 {
|
|
442
|
4034 const Extbyte *auto_save_file_name_ext;
|
|
428
|
4035 Extcount auto_save_file_name_ext_len;
|
|
|
4036
|
|
440
|
4037 TO_EXTERNAL_FORMAT (LISP_STRING, b->auto_save_file_name,
|
|
|
4038 ALLOCA, (auto_save_file_name_ext,
|
|
|
4039 auto_save_file_name_ext_len),
|
|
|
4040 Qfile_name);
|
|
428
|
4041 if (!NILP (b->filename))
|
|
|
4042 {
|
|
442
|
4043 const Extbyte *filename_ext;
|
|
428
|
4044 Extcount filename_ext_len;
|
|
|
4045
|
|
440
|
4046 TO_EXTERNAL_FORMAT (LISP_STRING, b->filename,
|
|
|
4047 ALLOCA, (filename_ext,
|
|
|
4048 filename_ext_len),
|
|
|
4049 Qfile_name);
|
|
428
|
4050 write (listdesc, filename_ext, filename_ext_len);
|
|
|
4051 }
|
|
|
4052 write (listdesc, "\n", 1);
|
|
|
4053 write (listdesc, auto_save_file_name_ext,
|
|
|
4054 auto_save_file_name_ext_len);
|
|
|
4055 write (listdesc, "\n", 1);
|
|
|
4056 }
|
|
|
4057
|
|
|
4058 /* dmoore - In a bad scenario we've set b=XBUFFER(buf)
|
|
|
4059 based on values in Vbuffer_alist. auto_save_1 may
|
|
|
4060 cause lisp handlers to run. Those handlers may kill
|
|
|
4061 the buffer and then GC. Since the buffer is killed,
|
|
|
4062 it's no longer in Vbuffer_alist so it might get reaped
|
|
|
4063 by the GC. We also need to protect tail. */
|
|
|
4064 /* #### There is probably a lot of other code which has
|
|
|
4065 pointers into buffers which may get blown away by
|
|
|
4066 handlers. */
|
|
|
4067 {
|
|
|
4068 struct gcpro ngcpro1, ngcpro2;
|
|
|
4069 NGCPRO2 (buf, tail);
|
|
|
4070 condition_case_1 (Qt,
|
|
|
4071 auto_save_1, Qnil,
|
|
|
4072 auto_save_error, Qnil);
|
|
|
4073 NUNGCPRO;
|
|
|
4074 }
|
|
|
4075 /* Handler killed our saved current-buffer! Pick any. */
|
|
|
4076 if (!BUFFER_LIVE_P (XBUFFER (old)))
|
|
|
4077 XSETBUFFER (old, current_buffer);
|
|
|
4078
|
|
|
4079 set_buffer_internal (XBUFFER (old));
|
|
|
4080 auto_saved++;
|
|
|
4081
|
|
|
4082 /* Handler killed their own buffer! */
|
|
|
4083 if (!BUFFER_LIVE_P(b))
|
|
|
4084 continue;
|
|
|
4085
|
|
|
4086 b->auto_save_modified = BUF_MODIFF (b);
|
|
|
4087 b->saved_size = make_int (BUF_SIZE (b));
|
|
|
4088 EMACS_GET_TIME (after_time);
|
|
|
4089 /* If auto-save took more than 60 seconds,
|
|
|
4090 assume it was an NFS failure that got a timeout. */
|
|
|
4091 if (EMACS_SECS (after_time) - EMACS_SECS (before_time) > 60)
|
|
|
4092 b->auto_save_failure_time = EMACS_SECS (after_time);
|
|
|
4093 }
|
|
|
4094 }
|
|
|
4095 }
|
|
|
4096
|
|
|
4097 /* Prevent another auto save till enough input events come in. */
|
|
|
4098 if (auto_saved)
|
|
|
4099 record_auto_save ();
|
|
|
4100
|
|
|
4101 /* If we didn't save anything into the listfile, remove the old
|
|
|
4102 one because nothing needed to be auto-saved. Do this afterwards
|
|
|
4103 rather than before in case we get a crash attempting to autosave
|
|
|
4104 (in that case we'd still want the old one around). */
|
|
|
4105 if (listdesc < 0 && !auto_saved && STRINGP (listfile))
|
|
|
4106 unlink ((char *) XSTRING_DATA (listfile));
|
|
|
4107
|
|
|
4108 /* Show "...done" only if the echo area would otherwise be empty. */
|
|
|
4109 if (auto_saved && NILP (no_message)
|
|
|
4110 && NILP (clear_echo_area (selected_frame (), Qauto_saving, 0)))
|
|
|
4111 {
|
|
442
|
4112 static const unsigned char *msg
|
|
|
4113 = (const unsigned char *)"Auto-saving...done";
|
|
428
|
4114 echo_area_message (selected_frame (), msg, Qnil, 0,
|
|
442
|
4115 strlen ((const char *) msg), Qauto_saving);
|
|
428
|
4116 }
|
|
|
4117
|
|
|
4118 Vquit_flag = oquit;
|
|
|
4119
|
|
|
4120 RETURN_UNGCPRO (unbind_to (speccount, Qnil));
|
|
|
4121 }
|
|
|
4122
|
|
|
4123 DEFUN ("set-buffer-auto-saved", Fset_buffer_auto_saved, 0, 0, 0, /*
|
|
|
4124 Mark current buffer as auto-saved with its current text.
|
|
|
4125 No auto-save file will be written until the buffer changes again.
|
|
|
4126 */
|
|
|
4127 ())
|
|
|
4128 {
|
|
|
4129 current_buffer->auto_save_modified = BUF_MODIFF (current_buffer);
|
|
|
4130 current_buffer->saved_size = make_int (BUF_SIZE (current_buffer));
|
|
|
4131 current_buffer->auto_save_failure_time = -1;
|
|
|
4132 return Qnil;
|
|
|
4133 }
|
|
|
4134
|
|
|
4135 DEFUN ("clear-buffer-auto-save-failure", Fclear_buffer_auto_save_failure, 0, 0, 0, /*
|
|
|
4136 Clear any record of a recent auto-save failure in the current buffer.
|
|
|
4137 */
|
|
|
4138 ())
|
|
|
4139 {
|
|
|
4140 current_buffer->auto_save_failure_time = -1;
|
|
|
4141 return Qnil;
|
|
|
4142 }
|
|
|
4143
|
|
|
4144 DEFUN ("recent-auto-save-p", Frecent_auto_save_p, 0, 0, 0, /*
|
|
|
4145 Return t if buffer has been auto-saved since last read in or saved.
|
|
|
4146 */
|
|
|
4147 ())
|
|
|
4148 {
|
|
|
4149 return (BUF_SAVE_MODIFF (current_buffer) <
|
|
|
4150 current_buffer->auto_save_modified) ? Qt : Qnil;
|
|
|
4151 }
|
|
|
4152
|
|
|
4153
|
|
|
4154 /************************************************************************/
|
|
|
4155 /* initialization */
|
|
|
4156 /************************************************************************/
|
|
|
4157
|
|
|
4158 void
|
|
|
4159 syms_of_fileio (void)
|
|
|
4160 {
|
|
|
4161 defsymbol (&Qexpand_file_name, "expand-file-name");
|
|
|
4162 defsymbol (&Qfile_truename, "file-truename");
|
|
|
4163 defsymbol (&Qsubstitute_in_file_name, "substitute-in-file-name");
|
|
|
4164 defsymbol (&Qdirectory_file_name, "directory-file-name");
|
|
|
4165 defsymbol (&Qfile_name_directory, "file-name-directory");
|
|
|
4166 defsymbol (&Qfile_name_nondirectory, "file-name-nondirectory");
|
|
|
4167 defsymbol (&Qunhandled_file_name_directory, "unhandled-file-name-directory");
|
|
|
4168 defsymbol (&Qfile_name_as_directory, "file-name-as-directory");
|
|
|
4169 defsymbol (&Qcopy_file, "copy-file");
|
|
|
4170 defsymbol (&Qmake_directory_internal, "make-directory-internal");
|
|
|
4171 defsymbol (&Qdelete_directory, "delete-directory");
|
|
|
4172 defsymbol (&Qdelete_file, "delete-file");
|
|
|
4173 defsymbol (&Qrename_file, "rename-file");
|
|
|
4174 defsymbol (&Qadd_name_to_file, "add-name-to-file");
|
|
|
4175 defsymbol (&Qmake_symbolic_link, "make-symbolic-link");
|
|
|
4176 defsymbol (&Qfile_exists_p, "file-exists-p");
|
|
|
4177 defsymbol (&Qfile_executable_p, "file-executable-p");
|
|
|
4178 defsymbol (&Qfile_readable_p, "file-readable-p");
|
|
|
4179 defsymbol (&Qfile_symlink_p, "file-symlink-p");
|
|
|
4180 defsymbol (&Qfile_writable_p, "file-writable-p");
|
|
|
4181 defsymbol (&Qfile_directory_p, "file-directory-p");
|
|
|
4182 defsymbol (&Qfile_regular_p, "file-regular-p");
|
|
|
4183 defsymbol (&Qfile_accessible_directory_p, "file-accessible-directory-p");
|
|
|
4184 defsymbol (&Qfile_modes, "file-modes");
|
|
|
4185 defsymbol (&Qset_file_modes, "set-file-modes");
|
|
|
4186 defsymbol (&Qfile_newer_than_file_p, "file-newer-than-file-p");
|
|
|
4187 defsymbol (&Qinsert_file_contents, "insert-file-contents");
|
|
|
4188 defsymbol (&Qwrite_region, "write-region");
|
|
|
4189 defsymbol (&Qverify_visited_file_modtime, "verify-visited-file-modtime");
|
|
|
4190 defsymbol (&Qset_visited_file_modtime, "set-visited-file-modtime");
|
|
|
4191 defsymbol (&Qcar_less_than_car, "car-less-than-car"); /* Vomitous! */
|
|
|
4192
|
|
|
4193 defsymbol (&Qauto_save_hook, "auto-save-hook");
|
|
|
4194 defsymbol (&Qauto_save_error, "auto-save-error");
|
|
|
4195 defsymbol (&Qauto_saving, "auto-saving");
|
|
|
4196
|
|
|
4197 defsymbol (&Qformat_decode, "format-decode");
|
|
|
4198 defsymbol (&Qformat_annotate_function, "format-annotate-function");
|
|
|
4199
|
|
|
4200 defsymbol (&Qcompute_buffer_file_truename, "compute-buffer-file-truename");
|
|
442
|
4201 DEFERROR_STANDARD (Qfile_error, Qio_error);
|
|
|
4202 DEFERROR_STANDARD (Qfile_already_exists, Qfile_error);
|
|
428
|
4203
|
|
|
4204 DEFSUBR (Ffind_file_name_handler);
|
|
|
4205
|
|
|
4206 DEFSUBR (Ffile_name_directory);
|
|
|
4207 DEFSUBR (Ffile_name_nondirectory);
|
|
|
4208 DEFSUBR (Funhandled_file_name_directory);
|
|
|
4209 DEFSUBR (Ffile_name_as_directory);
|
|
|
4210 DEFSUBR (Fdirectory_file_name);
|
|
|
4211 DEFSUBR (Fmake_temp_name);
|
|
|
4212 DEFSUBR (Fexpand_file_name);
|
|
|
4213 DEFSUBR (Ffile_truename);
|
|
|
4214 DEFSUBR (Fsubstitute_in_file_name);
|
|
|
4215 DEFSUBR (Fcopy_file);
|
|
|
4216 DEFSUBR (Fmake_directory_internal);
|
|
|
4217 DEFSUBR (Fdelete_directory);
|
|
|
4218 DEFSUBR (Fdelete_file);
|
|
|
4219 DEFSUBR (Frename_file);
|
|
|
4220 DEFSUBR (Fadd_name_to_file);
|
|
|
4221 DEFSUBR (Fmake_symbolic_link);
|
|
|
4222 #ifdef HPUX_NET
|
|
|
4223 DEFSUBR (Fsysnetunam);
|
|
|
4224 #endif /* HPUX_NET */
|
|
|
4225 DEFSUBR (Ffile_name_absolute_p);
|
|
|
4226 DEFSUBR (Ffile_exists_p);
|
|
|
4227 DEFSUBR (Ffile_executable_p);
|
|
|
4228 DEFSUBR (Ffile_readable_p);
|
|
|
4229 DEFSUBR (Ffile_writable_p);
|
|
|
4230 DEFSUBR (Ffile_symlink_p);
|
|
|
4231 DEFSUBR (Ffile_directory_p);
|
|
|
4232 DEFSUBR (Ffile_accessible_directory_p);
|
|
|
4233 DEFSUBR (Ffile_regular_p);
|
|
|
4234 DEFSUBR (Ffile_modes);
|
|
|
4235 DEFSUBR (Fset_file_modes);
|
|
|
4236 DEFSUBR (Fset_default_file_modes);
|
|
|
4237 DEFSUBR (Fdefault_file_modes);
|
|
|
4238 DEFSUBR (Funix_sync);
|
|
|
4239 DEFSUBR (Ffile_newer_than_file_p);
|
|
|
4240 DEFSUBR (Finsert_file_contents_internal);
|
|
|
4241 DEFSUBR (Fwrite_region_internal);
|
|
|
4242 DEFSUBR (Fcar_less_than_car); /* Vomitous! */
|
|
|
4243 DEFSUBR (Fcdr_less_than_cdr); /* Yeah oh yeah bucko .... */
|
|
|
4244 #if 0
|
|
|
4245 DEFSUBR (Fencrypt_string);
|
|
|
4246 DEFSUBR (Fdecrypt_string);
|
|
|
4247 #endif
|
|
|
4248 DEFSUBR (Fverify_visited_file_modtime);
|
|
|
4249 DEFSUBR (Fclear_visited_file_modtime);
|
|
|
4250 DEFSUBR (Fvisited_file_modtime);
|
|
|
4251 DEFSUBR (Fset_visited_file_modtime);
|
|
|
4252
|
|
|
4253 DEFSUBR (Fdo_auto_save);
|
|
|
4254 DEFSUBR (Fset_buffer_auto_saved);
|
|
|
4255 DEFSUBR (Fclear_buffer_auto_save_failure);
|
|
|
4256 DEFSUBR (Frecent_auto_save_p);
|
|
|
4257 }
|
|
|
4258
|
|
|
4259 void
|
|
|
4260 vars_of_fileio (void)
|
|
|
4261 {
|
|
|
4262 DEFVAR_LISP ("auto-save-file-format", &Vauto_save_file_format /*
|
|
|
4263 *Format in which to write auto-save files.
|
|
|
4264 Should be a list of symbols naming formats that are defined in `format-alist'.
|
|
|
4265 If it is t, which is the default, auto-save files are written in the
|
|
|
4266 same format as a regular save would use.
|
|
|
4267 */ );
|
|
|
4268 Vauto_save_file_format = Qt;
|
|
|
4269
|
|
|
4270 DEFVAR_LISP ("file-name-handler-alist", &Vfile_name_handler_alist /*
|
|
|
4271 *Alist of elements (REGEXP . HANDLER) for file names handled specially.
|
|
|
4272 If a file name matches REGEXP, then all I/O on that file is done by calling
|
|
|
4273 HANDLER.
|
|
|
4274
|
|
|
4275 The first argument given to HANDLER is the name of the I/O primitive
|
|
|
4276 to be handled; the remaining arguments are the arguments that were
|
|
|
4277 passed to that primitive. For example, if you do
|
|
|
4278 (file-exists-p FILENAME)
|
|
|
4279 and FILENAME is handled by HANDLER, then HANDLER is called like this:
|
|
|
4280 (funcall HANDLER 'file-exists-p FILENAME)
|
|
|
4281 The function `find-file-name-handler' checks this list for a handler
|
|
|
4282 for its argument.
|
|
|
4283 */ );
|
|
|
4284 Vfile_name_handler_alist = Qnil;
|
|
|
4285
|
|
|
4286 DEFVAR_LISP ("after-insert-file-functions", &Vafter_insert_file_functions /*
|
|
|
4287 A list of functions to be called at the end of `insert-file-contents'.
|
|
|
4288 Each is passed one argument, the number of bytes inserted. It should return
|
|
|
4289 the new byte count, and leave point the same. If `insert-file-contents' is
|
|
|
4290 intercepted by a handler from `file-name-handler-alist', that handler is
|
|
|
4291 responsible for calling the after-insert-file-functions if appropriate.
|
|
|
4292 */ );
|
|
|
4293 Vafter_insert_file_functions = Qnil;
|
|
|
4294
|
|
|
4295 DEFVAR_LISP ("write-region-annotate-functions",
|
|
|
4296 &Vwrite_region_annotate_functions /*
|
|
|
4297 A list of functions to be called at the start of `write-region'.
|
|
|
4298 Each is passed two arguments, START and END, as for `write-region'.
|
|
|
4299 It should return a list of pairs (POSITION . STRING) of strings to be
|
|
|
4300 effectively inserted at the specified positions of the file being written
|
|
|
4301 \(1 means to insert before the first byte written). The POSITIONs must be
|
|
|
4302 sorted into increasing order. If there are several functions in the list,
|
|
|
4303 the several lists are merged destructively.
|
|
|
4304 */ );
|
|
|
4305 Vwrite_region_annotate_functions = Qnil;
|
|
|
4306
|
|
|
4307 DEFVAR_LISP ("write-region-annotations-so-far",
|
|
|
4308 &Vwrite_region_annotations_so_far /*
|
|
|
4309 When an annotation function is called, this holds the previous annotations.
|
|
|
4310 These are the annotations made by other annotation functions
|
|
|
4311 that were already called. See also `write-region-annotate-functions'.
|
|
|
4312 */ );
|
|
|
4313 Vwrite_region_annotations_so_far = Qnil;
|
|
|
4314
|
|
|
4315 DEFVAR_LISP ("inhibit-file-name-handlers", &Vinhibit_file_name_handlers /*
|
|
|
4316 A list of file name handlers that temporarily should not be used.
|
|
|
4317 This applies only to the operation `inhibit-file-name-operation'.
|
|
|
4318 */ );
|
|
|
4319 Vinhibit_file_name_handlers = Qnil;
|
|
|
4320
|
|
|
4321 DEFVAR_LISP ("inhibit-file-name-operation", &Vinhibit_file_name_operation /*
|
|
|
4322 The operation for which `inhibit-file-name-handlers' is applicable.
|
|
|
4323 */ );
|
|
|
4324 Vinhibit_file_name_operation = Qnil;
|
|
|
4325
|
|
|
4326 DEFVAR_LISP ("auto-save-list-file-name", &Vauto_save_list_file_name /*
|
|
|
4327 File name in which we write a list of all auto save file names.
|
|
|
4328 */ );
|
|
|
4329 Vauto_save_list_file_name = Qnil;
|
|
|
4330
|
|
444
|
4331 DEFVAR_LISP ("auto-save-list-file-prefix", &Vauto_save_list_file_prefix /*
|
|
|
4332 Prefix for generating auto-save-list-file-name.
|
|
|
4333 Emacs's pid and the system name will be appended to
|
|
|
4334 this prefix to create a unique file name.
|
|
|
4335 */ );
|
|
|
4336 Vauto_save_list_file_prefix = build_string ("~/.saves-");
|
|
|
4337
|
|
|
4338 DEFVAR_BOOL ("inhibit-auto-save-session", &inhibit_auto_save_session /*
|
|
|
4339 When non-nil, inhibit auto save list file creation.
|
|
|
4340 */ );
|
|
|
4341 inhibit_auto_save_session = 0;
|
|
|
4342
|
|
428
|
4343 DEFVAR_BOOL ("disable-auto-save-when-buffer-shrinks",
|
|
|
4344 &disable_auto_save_when_buffer_shrinks /*
|
|
|
4345 If non-nil, auto-saving is disabled when a buffer shrinks too much.
|
|
|
4346 This is to prevent you from losing your edits if you accidentally
|
|
|
4347 delete a large chunk of the buffer and don't notice it until too late.
|
|
|
4348 Saving the buffer normally turns auto-save back on.
|
|
|
4349 */ );
|
|
|
4350 disable_auto_save_when_buffer_shrinks = 1;
|
|
|
4351
|
|
|
4352 DEFVAR_LISP ("directory-sep-char", &Vdirectory_sep_char /*
|
|
|
4353 Directory separator character for built-in functions that return file names.
|
|
|
4354 The value should be either ?/ or ?\\ (any other value is treated as ?\\).
|
|
|
4355 This variable affects the built-in functions only on Windows,
|
|
|
4356 on other platforms, it is initialized so that Lisp code can find out
|
|
|
4357 what the normal separator is.
|
|
|
4358 */ );
|
|
442
|
4359 #ifdef WIN32_NATIVE
|
|
432
|
4360 Vdirectory_sep_char = make_char ('\\');
|
|
|
4361 #else
|
|
442
|
4362 Vdirectory_sep_char = make_char ('/');
|
|
432
|
4363 #endif
|
|
442
|
4364
|
|
|
4365 reinit_vars_of_fileio ();
|
|
428
|
4366 }
|
|
442
|
4367
|
|
|
4368 void
|
|
|
4369 reinit_vars_of_fileio (void)
|
|
|
4370 {
|
|
|
4371 /* We want temp_name_rand to be initialized to a value likely to be
|
|
|
4372 unique to the process, not to the executable. The danger is that
|
|
|
4373 two different XEmacs processes using the same binary on different
|
|
|
4374 machines creating temp files in the same directory will be
|
|
|
4375 unlucky enough to have the same pid. If we randomize using
|
|
|
4376 process startup time, then in practice they will be unlikely to
|
|
|
4377 collide. We use the microseconds field so that scripts that start
|
|
|
4378 simultaneous XEmacs processes on multiple machines will have less
|
|
|
4379 chance of collision. */
|
|
|
4380 {
|
|
|
4381 EMACS_TIME thyme;
|
|
|
4382
|
|
|
4383 EMACS_GET_TIME (thyme);
|
|
|
4384 temp_name_rand = (unsigned int) (EMACS_SECS (thyme) ^ EMACS_USECS (thyme));
|
|
|
4385 }
|
|
|
4386 }
|
