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0
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1 /* File IO for XEmacs.
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2 Copyright (C) 1985-1988, 1992-1995 Free Software Foundation, Inc.
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3 Copyright (C) 1996 Ben Wing.
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4
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5 This file is part of XEmacs.
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6
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7 XEmacs is free software; you can redistribute it and/or modify it
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8 under the terms of the GNU General Public License as published by the
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9 Free Software Foundation; either version 2, or (at your option) any
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10 later version.
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11
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12 XEmacs is distributed in the hope that it will be useful, but WITHOUT
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13 ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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14 FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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15 for more details.
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16
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17 You should have received a copy of the GNU General Public License
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18 along with XEmacs; see the file COPYING. If not, write to
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19 the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
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20 Boston, MA 02111-1307, USA. */
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21
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22 /* Synched up with: Mule 2.0, FSF 19.30. */
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211
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23 /* More syncing: FSF Emacs 19.34.6 by Marc Paquette <marcpa@cam.org> */
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0
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24
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25 #include <config.h>
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26 #include "lisp.h"
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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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259
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36 #ifdef FILE_CODING
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37 #include "file-coding.h"
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70
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38 #endif
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0
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39
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2
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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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0
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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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211
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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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410
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56 #ifdef WIN32_NATIVE
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211
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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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398
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61 #define DRIVE_LETTER(x) tolower (x)
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410
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62 #endif /* WIN32_NATIVE */
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0
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63
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272
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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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0
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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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151
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74 /* Alist of elements (REGEXP . HANDLER) for file names
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0
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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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97 int disable_auto_save_when_buffer_shrinks;
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98
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284
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99 Lisp_Object Vdirectory_sep_char;
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235
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100
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0
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101 /* These variables describe handlers that have "already" had a chance
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102 to handle the current operation.
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103
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104 Vinhibit_file_name_handlers is a list of file name handlers.
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105 Vinhibit_file_name_operation is the operation being handled.
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106 If we try to handle that operation, we ignore those handlers. */
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107
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108 static Lisp_Object Vinhibit_file_name_handlers;
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109 static Lisp_Object Vinhibit_file_name_operation;
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110
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111 Lisp_Object Qfile_error, Qfile_already_exists;
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112
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113 Lisp_Object Qauto_save_hook;
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114 Lisp_Object Qauto_save_error;
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115 Lisp_Object Qauto_saving;
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116
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117 Lisp_Object Qcar_less_than_car;
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118
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119 Lisp_Object Qcompute_buffer_file_truename;
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120
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280
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121 EXFUN (Frunning_temacs_p, 0);
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122
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0
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123 /* signal a file error when errno contains a meaningful value. */
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124
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125 DOESNT_RETURN
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398
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126 report_file_error (const char *string, Lisp_Object data)
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0
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127 {
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114
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128 /* #### dmoore - This uses current_buffer, better make sure no one
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129 has GC'd the current buffer. File handlers are giving me a headache
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130 maybe I'll just always protect current_buffer around all of those
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131 calls. */
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132
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0
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133 signal_error (Qfile_error,
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134 Fcons (build_translated_string (string),
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151
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135 Fcons (lisp_strerror (errno), data)));
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0
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136 }
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137
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138 void
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398
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139 maybe_report_file_error (const char *string, Lisp_Object data,
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0
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140 Lisp_Object class, Error_behavior errb)
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141 {
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142 /* Optimization: */
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143 if (ERRB_EQ (errb, ERROR_ME_NOT))
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144 return;
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145
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146 maybe_signal_error (Qfile_error,
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147 Fcons (build_translated_string (string),
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151
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148 Fcons (lisp_strerror (errno), data)),
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0
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149 class, errb);
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150 }
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151
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152 /* signal a file error when errno does not contain a meaningful value. */
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153
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154 DOESNT_RETURN
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398
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155 signal_file_error (const char *string, Lisp_Object data)
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0
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156 {
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157 signal_error (Qfile_error,
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158 list2 (build_translated_string (string), data));
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159 }
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160
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161 void
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398
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162 maybe_signal_file_error (const char *string, Lisp_Object data,
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0
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163 Lisp_Object class, Error_behavior errb)
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164 {
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165 /* Optimization: */
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166 if (ERRB_EQ (errb, ERROR_ME_NOT))
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167 return;
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168 maybe_signal_error (Qfile_error,
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169 list2 (build_translated_string (string), data),
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170 class, errb);
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171 }
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172
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173 DOESNT_RETURN
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398
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174 signal_double_file_error (const char *string1, const char *string2,
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0
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175 Lisp_Object data)
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176 {
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177 signal_error (Qfile_error,
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178 list3 (build_translated_string (string1),
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179 build_translated_string (string2),
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180 data));
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181 }
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182
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183 void
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398
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184 maybe_signal_double_file_error (const char *string1, const char *string2,
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0
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185 Lisp_Object data, Lisp_Object class,
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186 Error_behavior errb)
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187 {
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188 /* Optimization: */
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189 if (ERRB_EQ (errb, ERROR_ME_NOT))
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190 return;
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191 maybe_signal_error (Qfile_error,
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192 list3 (build_translated_string (string1),
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193 build_translated_string (string2),
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194 data),
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195 class, errb);
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196 }
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197
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198 DOESNT_RETURN
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398
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199 signal_double_file_error_2 (const char *string1, const char *string2,
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0
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200 Lisp_Object data1, Lisp_Object data2)
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201 {
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202 signal_error (Qfile_error,
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151
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203 list4 (build_translated_string (string1),
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0
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204 build_translated_string (string2),
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205 data1, data2));
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206 }
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207
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208 void
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398
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209 maybe_signal_double_file_error_2 (const char *string1, const char *string2,
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0
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210 Lisp_Object data1, Lisp_Object data2,
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211 Lisp_Object class, Error_behavior errb)
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212 {
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213 /* Optimization: */
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214 if (ERRB_EQ (errb, ERROR_ME_NOT))
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215 return;
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216 maybe_signal_error (Qfile_error,
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151
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217 list4 (build_translated_string (string1),
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0
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218 build_translated_string (string2),
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219 data1, data2),
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220 class, errb);
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221 }
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222
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151
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223
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224 /* Just like strerror(3), except return a lisp string instead of char *.
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225 The string needs to be converted since it may be localized.
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226 Perhaps this should use strerror-coding-system instead? */
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227 Lisp_Object
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228 lisp_strerror (int errnum)
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229 {
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398
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230 return build_ext_string (strerror (errnum), Qnative);
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151
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231 }
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232
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0
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233 static Lisp_Object
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234 close_file_unwind (Lisp_Object fd)
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235 {
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236 if (CONSP (fd))
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237 {
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238 if (INTP (XCAR (fd)))
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239 close (XINT (XCAR (fd)));
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240
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241 free_cons (XCONS (fd));
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242 }
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243 else
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244 close (XINT (fd));
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245
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246 return Qnil;
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247 }
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248
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249 static Lisp_Object
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280
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250 delete_stream_unwind (Lisp_Object stream)
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0
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251 {
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280
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252 Lstream_delete (XLSTREAM (stream));
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0
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253 return Qnil;
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254 }
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255
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256 /* Restore point, having saved it as a marker. */
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257
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258 static Lisp_Object
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259 restore_point_unwind (Lisp_Object point_marker)
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260 {
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261 BUF_SET_PT (current_buffer, marker_position (point_marker));
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173
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262 return Fset_marker (point_marker, Qnil, Qnil);
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0
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263 }
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264
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265 /* Versions of read() and write() that allow quitting out of the actual
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266 I/O. We don't use immediate_quit (i.e. direct longjmp() out of the
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267 signal handler) because that's way too losing.
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268
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269 (#### Actually, longjmp()ing out of the signal handler may not be
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398
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270 as losing as I thought. See sys_do_signal() in sysdep.c.) */
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271
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272 ssize_t
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272
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273 read_allowing_quit (int fildes, void *buf, size_t size)
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0
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274 {
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275 QUIT;
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272
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276 return sys_read_1 (fildes, buf, size, 1);
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0
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277 }
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278
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398
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279 ssize_t
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280 write_allowing_quit (int fildes, const void *buf, size_t size)
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0
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281 {
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282 QUIT;
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272
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283 return sys_write_1 (fildes, buf, size, 1);
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0
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284 }
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285
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286
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287 Lisp_Object Qexpand_file_name;
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288 Lisp_Object Qfile_truename;
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289 Lisp_Object Qsubstitute_in_file_name;
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290 Lisp_Object Qdirectory_file_name;
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291 Lisp_Object Qfile_name_directory;
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292 Lisp_Object Qfile_name_nondirectory;
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293 Lisp_Object Qunhandled_file_name_directory;
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294 Lisp_Object Qfile_name_as_directory;
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295 Lisp_Object Qcopy_file;
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296 Lisp_Object Qmake_directory_internal;
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297 Lisp_Object Qdelete_directory;
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298 Lisp_Object Qdelete_file;
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299 Lisp_Object Qrename_file;
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300 Lisp_Object Qadd_name_to_file;
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301 Lisp_Object Qmake_symbolic_link;
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302 Lisp_Object Qfile_exists_p;
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303 Lisp_Object Qfile_executable_p;
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304 Lisp_Object Qfile_readable_p;
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305 Lisp_Object Qfile_symlink_p;
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306 Lisp_Object Qfile_writable_p;
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307 Lisp_Object Qfile_directory_p;
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308 Lisp_Object Qfile_regular_p;
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309 Lisp_Object Qfile_accessible_directory_p;
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310 Lisp_Object Qfile_modes;
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311 Lisp_Object Qset_file_modes;
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312 Lisp_Object Qfile_newer_than_file_p;
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313 Lisp_Object Qinsert_file_contents;
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314 Lisp_Object Qwrite_region;
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315 Lisp_Object Qverify_visited_file_modtime;
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316 Lisp_Object Qset_visited_file_modtime;
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317
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318 /* If FILENAME is handled specially on account of its syntax,
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319 return its handler function. Otherwise, return nil. */
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320
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20
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321 DEFUN ("find-file-name-handler", Ffind_file_name_handler, 1, 2, 0, /*
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0
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322 Return FILENAME's handler function for OPERATION, if it has one.
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323 Otherwise, return nil.
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324 A file name is handled if one of the regular expressions in
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325 `file-name-handler-alist' matches it.
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326
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327 If OPERATION equals `inhibit-file-name-operation', then we ignore
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328 any handlers that are members of `inhibit-file-name-handlers',
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329 but we still do run any other handlers. This lets handlers
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330 use the standard functions without calling themselves recursively.
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20
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331 */
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332 (filename, operation))
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0
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333 {
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116
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334 /* This function does not GC */
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263
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335 /* This function can be called during GC */
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0
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336 /* This function must not munge the match data. */
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337 Lisp_Object chain, inhibited_handlers;
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338
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339 CHECK_STRING (filename);
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340
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341 if (EQ (operation, Vinhibit_file_name_operation))
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342 inhibited_handlers = Vinhibit_file_name_handlers;
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343 else
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344 inhibited_handlers = Qnil;
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345
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227
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346 EXTERNAL_LIST_LOOP (chain, Vfile_name_handler_alist)
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0
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347 {
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348 Lisp_Object elt = XCAR (chain);
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349 if (CONSP (elt))
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350 {
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227
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351 Lisp_Object string = XCAR (elt);
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0
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352 if (STRINGP (string)
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353 && (fast_lisp_string_match (string, filename) >= 0))
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354 {
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355 Lisp_Object handler = XCDR (elt);
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356 if (NILP (Fmemq (handler, inhibited_handlers)))
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173
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357 return handler;
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0
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358 }
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359 }
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360 QUIT;
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361 }
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362 return Qnil;
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363 }
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364
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365 static Lisp_Object
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366 call2_check_string (Lisp_Object fn, Lisp_Object arg0, Lisp_Object arg1)
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367 {
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116
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368 /* This function can call lisp */
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0
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369 Lisp_Object result = call2 (fn, arg0, arg1);
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370 CHECK_STRING (result);
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173
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371 return result;
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0
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372 }
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373
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374 static Lisp_Object
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114
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375 call2_check_string_or_nil (Lisp_Object fn, Lisp_Object arg0, Lisp_Object arg1)
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376 {
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116
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377 /* This function can call lisp */
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114
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378 Lisp_Object result = call2 (fn, arg0, arg1);
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379 if (!NILP (result))
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380 CHECK_STRING (result);
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173
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381 return result;
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114
|
382 }
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383
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384 static Lisp_Object
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151
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385 call3_check_string (Lisp_Object fn, Lisp_Object arg0,
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0
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386 Lisp_Object arg1, Lisp_Object arg2)
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|
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387 {
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|
116
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388 /* This function can call lisp */
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|
0
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389 Lisp_Object result = call3 (fn, arg0, arg1, arg2);
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|
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390 CHECK_STRING (result);
|
|
173
|
391 return result;
|
|
0
|
392 }
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|
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393
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|
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394
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20
|
395 DEFUN ("file-name-directory", Ffile_name_directory, 1, 1, 0, /*
|
|
0
|
396 Return the directory component in file name NAME.
|
|
|
397 Return nil if NAME does not include a directory.
|
|
|
398 Otherwise return a directory spec.
|
|
209
|
399 Given a Unix syntax file name, returns a string ending in slash.
|
|
20
|
400 */
|
|
|
401 (file))
|
|
0
|
402 {
|
|
120
|
403 /* This function can GC. GC checked 1997.04.06. */
|
|
0
|
404 Bufbyte *beg;
|
|
|
405 Bufbyte *p;
|
|
|
406 Lisp_Object handler;
|
|
|
407
|
|
|
408 CHECK_STRING (file);
|
|
|
409
|
|
|
410 /* If the file name has special constructs in it,
|
|
|
411 call the corresponding file handler. */
|
|
|
412 handler = Ffind_file_name_handler (file, Qfile_name_directory);
|
|
|
413 if (!NILP (handler))
|
|
173
|
414 return call2_check_string_or_nil (handler, Qfile_name_directory, file);
|
|
0
|
415
|
|
|
416 #ifdef FILE_SYSTEM_CASE
|
|
|
417 file = FILE_SYSTEM_CASE (file);
|
|
|
418 #endif
|
|
16
|
419 beg = XSTRING_DATA (file);
|
|
|
420 p = beg + XSTRING_LENGTH (file);
|
|
0
|
421
|
|
211
|
422 while (p != beg && !IS_ANY_SEP (p[-1])
|
|
410
|
423 #ifdef WIN32_NATIVE
|
|
380
|
424 /* only recognize drive specifier at beginning */
|
|
211
|
425 && !(p[-1] == ':' && p == beg + 2)
|
|
|
426 #endif
|
|
|
427 ) p--;
|
|
0
|
428
|
|
|
429 if (p == beg)
|
|
|
430 return Qnil;
|
|
410
|
431 #ifdef WIN32_NATIVE
|
|
0
|
432 /* Expansion of "c:" to drive and default directory. */
|
|
|
433 /* (NT does the right thing.) */
|
|
|
434 if (p == beg + 2 && beg[1] == ':')
|
|
|
435 {
|
|
|
436 /* MAXPATHLEN+1 is guaranteed to be enough space for getdefdir. */
|
|
400
|
437 Bufbyte *res = (Bufbyte*) alloca (MAXPATHLEN + 1);
|
|
410
|
438 if (_getdcwd (toupper (*beg) - 'A' + 1, (char *)res, MAXPATHLEN))
|
|
0
|
439 {
|
|
373
|
440 char *c=((char *) res) + strlen ((char *) res);
|
|
|
441 if (!IS_DIRECTORY_SEP (*c))
|
|
|
442 {
|
|
|
443 *c++ = DIRECTORY_SEP;
|
|
|
444 *c = '\0';
|
|
|
445 }
|
|
0
|
446 beg = res;
|
|
|
447 p = beg + strlen ((char *) beg);
|
|
|
448 }
|
|
|
449 }
|
|
410
|
450 #endif /* WIN32_NATIVE */
|
|
0
|
451 return make_string (beg, p - beg);
|
|
|
452 }
|
|
|
453
|
|
20
|
454 DEFUN ("file-name-nondirectory", Ffile_name_nondirectory, 1, 1, 0, /*
|
|
0
|
455 Return file name NAME sans its directory.
|
|
|
456 For example, in a Unix-syntax file name,
|
|
|
457 this is everything after the last slash,
|
|
|
458 or the entire name if it contains no slash.
|
|
20
|
459 */
|
|
|
460 (file))
|
|
0
|
461 {
|
|
120
|
462 /* This function can GC. GC checked 1997.04.06. */
|
|
0
|
463 Bufbyte *beg, *p, *end;
|
|
|
464 Lisp_Object handler;
|
|
|
465
|
|
|
466 CHECK_STRING (file);
|
|
|
467
|
|
|
468 /* If the file name has special constructs in it,
|
|
|
469 call the corresponding file handler. */
|
|
|
470 handler = Ffind_file_name_handler (file, Qfile_name_nondirectory);
|
|
|
471 if (!NILP (handler))
|
|
173
|
472 return call2_check_string (handler, Qfile_name_nondirectory, file);
|
|
0
|
473
|
|
16
|
474 beg = XSTRING_DATA (file);
|
|
|
475 end = p = beg + XSTRING_LENGTH (file);
|
|
0
|
476
|
|
211
|
477 while (p != beg && !IS_ANY_SEP (p[-1])
|
|
410
|
478 #ifdef WIN32_NATIVE
|
|
380
|
479 /* only recognize drive specifier at beginning */
|
|
211
|
480 && !(p[-1] == ':' && p == beg + 2)
|
|
|
481 #endif
|
|
|
482 ) p--;
|
|
0
|
483
|
|
|
484 return make_string (p, end - p);
|
|
|
485 }
|
|
|
486
|
|
20
|
487 DEFUN ("unhandled-file-name-directory", Funhandled_file_name_directory, 1, 1, 0, /*
|
|
0
|
488 Return a directly usable directory name somehow associated with FILENAME.
|
|
|
489 A `directly usable' directory name is one that may be used without the
|
|
|
490 intervention of any file handler.
|
|
|
491 If FILENAME is a directly usable file itself, return
|
|
272
|
492 \(file-name-directory FILENAME).
|
|
0
|
493 The `call-process' and `start-process' functions use this function to
|
|
|
494 get a current directory to run processes in.
|
|
20
|
495 */
|
|
70
|
496 (filename))
|
|
0
|
497 {
|
|
120
|
498 /* This function can GC. GC checked 1997.04.06. */
|
|
0
|
499 Lisp_Object handler;
|
|
|
500
|
|
|
501 /* If the file name has special constructs in it,
|
|
|
502 call the corresponding file handler. */
|
|
|
503 handler = Ffind_file_name_handler (filename, Qunhandled_file_name_directory);
|
|
|
504 if (!NILP (handler))
|
|
|
505 return call2 (handler, Qunhandled_file_name_directory,
|
|
|
506 filename);
|
|
|
507
|
|
|
508 return Ffile_name_directory (filename);
|
|
|
509 }
|
|
|
510
|
|
|
511
|
|
|
512 static char *
|
|
|
513 file_name_as_directory (char *out, char *in)
|
|
|
514 {
|
|
276
|
515 int size = strlen (in);
|
|
|
516
|
|
|
517 if (size == 0)
|
|
0
|
518 {
|
|
276
|
519 out[0] = '.';
|
|
|
520 out[1] = DIRECTORY_SEP;
|
|
|
521 out[2] = '\0';
|
|
|
522 }
|
|
|
523 else
|
|
|
524 {
|
|
|
525 strcpy (out, in);
|
|
|
526 /* Append a slash if necessary */
|
|
|
527 if (!IS_ANY_SEP (out[size-1]))
|
|
|
528 {
|
|
|
529 out[size] = DIRECTORY_SEP;
|
|
|
530 out[size + 1] = '\0';
|
|
|
531 }
|
|
0
|
532 }
|
|
|
533 return out;
|
|
|
534 }
|
|
|
535
|
|
20
|
536 DEFUN ("file-name-as-directory", Ffile_name_as_directory, 1, 1, 0, /*
|
|
0
|
537 Return a string representing file FILENAME interpreted as a directory.
|
|
|
538 This operation exists because a directory is also a file, but its name as
|
|
|
539 a directory is different from its name as a file.
|
|
|
540 The result can be used as the value of `default-directory'
|
|
|
541 or passed as second argument to `expand-file-name'.
|
|
276
|
542 For a Unix-syntax file name, just appends a slash,
|
|
|
543 except for (file-name-as-directory \"\") => \"./\".
|
|
20
|
544 */
|
|
|
545 (file))
|
|
0
|
546 {
|
|
120
|
547 /* This function can GC. GC checked 1997.04.06. */
|
|
0
|
548 char *buf;
|
|
|
549 Lisp_Object handler;
|
|
|
550
|
|
|
551 CHECK_STRING (file);
|
|
|
552
|
|
|
553 /* If the file name has special constructs in it,
|
|
|
554 call the corresponding file handler. */
|
|
|
555 handler = Ffind_file_name_handler (file, Qfile_name_as_directory);
|
|
|
556 if (!NILP (handler))
|
|
173
|
557 return call2_check_string (handler, Qfile_name_as_directory, file);
|
|
0
|
558
|
|
16
|
559 buf = (char *) alloca (XSTRING_LENGTH (file) + 10);
|
|
0
|
560 return build_string (file_name_as_directory
|
|
16
|
561 (buf, (char *) XSTRING_DATA (file)));
|
|
0
|
562 }
|
|
|
563
|
|
|
564 /*
|
|
|
565 * Convert from directory name to filename.
|
|
211
|
566 * On UNIX, it's simple: just make sure there isn't a terminating /
|
|
265
|
567 *
|
|
0
|
568 * Value is nonzero if the string output is different from the input.
|
|
|
569 */
|
|
|
570
|
|
|
571 static int
|
|
398
|
572 directory_file_name (const char *src, char *dst)
|
|
0
|
573 {
|
|
398
|
574 long slen = strlen (src);
|
|
0
|
575 /* Process as Unix format: just remove any final slash.
|
|
|
576 But leave "/" unchanged; do not change it to "". */
|
|
|
577 strcpy (dst, src);
|
|
151
|
578 if (slen > 1
|
|
0
|
579 && IS_DIRECTORY_SEP (dst[slen - 1])
|
|
410
|
580 #ifdef WIN32_NATIVE
|
|
0
|
581 && !IS_ANY_SEP (dst[slen - 2])
|
|
410
|
582 #endif /* WIN32_NATIVE */
|
|
0
|
583 )
|
|
|
584 dst[slen - 1] = 0;
|
|
|
585 return 1;
|
|
|
586 }
|
|
|
587
|
|
20
|
588 DEFUN ("directory-file-name", Fdirectory_file_name, 1, 1, 0, /*
|
|
0
|
589 Return the file name of the directory named DIR.
|
|
|
590 This is the name of the file that holds the data for the directory DIR.
|
|
|
591 This operation exists because a directory is also a file, but its name as
|
|
|
592 a directory is different from its name as a file.
|
|
|
593 In Unix-syntax, this function just removes the final slash.
|
|
20
|
594 */
|
|
|
595 (directory))
|
|
0
|
596 {
|
|
120
|
597 /* This function can GC. GC checked 1997.04.06. */
|
|
0
|
598 char *buf;
|
|
|
599 Lisp_Object handler;
|
|
|
600
|
|
|
601 CHECK_STRING (directory);
|
|
|
602
|
|
|
603 #if 0 /* #### WTF? */
|
|
|
604 if (NILP (directory))
|
|
|
605 return Qnil;
|
|
|
606 #endif
|
|
|
607
|
|
|
608 /* If the file name has special constructs in it,
|
|
|
609 call the corresponding file handler. */
|
|
|
610 handler = Ffind_file_name_handler (directory, Qdirectory_file_name);
|
|
|
611 if (!NILP (handler))
|
|
173
|
612 return call2_check_string (handler, Qdirectory_file_name, directory);
|
|
16
|
613 buf = (char *) alloca (XSTRING_LENGTH (directory) + 20);
|
|
|
614 directory_file_name ((char *) XSTRING_DATA (directory), buf);
|
|
0
|
615 return build_string (buf);
|
|
|
616 }
|
|
274
|
617
|
|
|
618 /* Fmake_temp_name used to be a simple wrapper around mktemp(), but it
|
|
|
619 proved too broken for our purposes (it supported only 26 or 62
|
|
276
|
620 unique names under some implementations). For example, this
|
|
|
621 arbitrary limit broke generation of Gnus Incoming* files.
|
|
|
622
|
|
|
623 This implementation is better than what one usually finds in libc.
|
|
|
624 --hniksic */
|
|
0
|
625
|
|
404
|
626 static unsigned int temp_name_rand;
|
|
|
627
|
|
20
|
628 DEFUN ("make-temp-name", Fmake_temp_name, 1, 1, 0, /*
|
|
404
|
629 Generate a temporary file name starting with PREFIX.
|
|
274
|
630 The Emacs process number forms part of the result, so there is no
|
|
|
631 danger of generating a name being used by another process.
|
|
|
632
|
|
284
|
633 In addition, this function makes an attempt to choose a name that
|
|
|
634 does not specify an existing file. To make this work, PREFIX should
|
|
|
635 be an absolute file name.
|
|
20
|
636 */
|
|
|
637 (prefix))
|
|
0
|
638 {
|
|
404
|
639 static const char tbl[64] =
|
|
|
640 {
|
|
274
|
641 'A','B','C','D','E','F','G','H',
|
|
|
642 'I','J','K','L','M','N','O','P',
|
|
|
643 'Q','R','S','T','U','V','W','X',
|
|
|
644 'Y','Z','a','b','c','d','e','f',
|
|
|
645 'g','h','i','j','k','l','m','n',
|
|
|
646 'o','p','q','r','s','t','u','v',
|
|
|
647 'w','x','y','z','0','1','2','3',
|
|
404
|
648 '4','5','6','7','8','9','-','_'
|
|
|
649 };
|
|
276
|
650
|
|
274
|
651 Lisp_Object val;
|
|
0
|
652 Bytecount len;
|
|
274
|
653 Bufbyte *p, *data;
|
|
0
|
654
|
|
|
655 CHECK_STRING (prefix);
|
|
274
|
656
|
|
|
657 /* I was tempted to apply Fexpand_file_name on PREFIX here, but it's
|
|
|
658 a bad idea because:
|
|
|
659
|
|
|
660 1) It might change the prefix, so the resulting string might not
|
|
|
661 begin with PREFIX. This violates the principle of least
|
|
|
662 surprise.
|
|
|
663
|
|
|
664 2) It breaks under many unforeseeable circumstances, such as with
|
|
|
665 the code that uses (make-temp-name "") instead of
|
|
|
666 (make-temp-name "./").
|
|
|
667
|
|
276
|
668 3) It might yield unexpected (to stat(2)) results in the presence
|
|
|
669 of EFS and file name handlers. */
|
|
274
|
670
|
|
16
|
671 len = XSTRING_LENGTH (prefix);
|
|
274
|
672 val = make_uninit_string (len + 6);
|
|
16
|
673 data = XSTRING_DATA (val);
|
|
|
674 memcpy (data, XSTRING_DATA (prefix), len);
|
|
274
|
675 p = data + len;
|
|
|
676
|
|
278
|
677 /* VAL is created by adding 6 characters to PREFIX. The first three
|
|
|
678 are the PID of this process, in base 64, and the second three are
|
|
404
|
679 a pseudo-random number seeded from process startup time. This
|
|
|
680 ensures 262144 unique file names per PID per PREFIX per machine. */
|
|
|
681
|
|
|
682 {
|
|
|
683 unsigned int pid = (unsigned int) getpid ();
|
|
|
684 *p++ = tbl[(pid >> 0) & 63];
|
|
|
685 *p++ = tbl[(pid >> 6) & 63];
|
|
|
686 *p++ = tbl[(pid >> 12) & 63];
|
|
|
687 }
|
|
274
|
688
|
|
276
|
689 /* Here we try to minimize useless stat'ing when this function is
|
|
|
690 invoked many times successively with the same PREFIX. We achieve
|
|
404
|
691 this by using a very pseudo-random number generator to generate
|
|
|
692 file names unique to this process, with a very long cycle. */
|
|
276
|
693
|
|
|
694 while (1)
|
|
|
695 {
|
|
|
696 struct stat ignored;
|
|
404
|
697
|
|
|
698 p[0] = tbl[(temp_name_rand >> 0) & 63];
|
|
|
699 p[1] = tbl[(temp_name_rand >> 6) & 63];
|
|
|
700 p[2] = tbl[(temp_name_rand >> 12) & 63];
|
|
276
|
701
|
|
280
|
702 /* Poor man's congruential RN generator. Replace with ++count
|
|
|
703 for debugging. */
|
|
404
|
704 temp_name_rand += 25229;
|
|
|
705 temp_name_rand %= 225307;
|
|
280
|
706
|
|
286
|
707 QUIT;
|
|
|
708
|
|
398
|
709 if (stat ((const char *) data, &ignored) < 0)
|
|
274
|
710 {
|
|
276
|
711 /* We want to return only if errno is ENOENT. */
|
|
|
712 if (errno == ENOENT)
|
|
|
713 return val;
|
|
380
|
714
|
|
|
715 /* The error here is dubious, but there is little else we
|
|
|
716 can do. The alternatives are to return nil, which is
|
|
|
717 as bad as (and in many cases worse than) throwing the
|
|
|
718 error, or to ignore the error, which will likely result
|
|
|
719 in inflooping. */
|
|
|
720 report_file_error ("Cannot create temporary name for prefix",
|
|
|
721 list1 (prefix));
|
|
|
722 return Qnil; /* not reached */
|
|
274
|
723 }
|
|
|
724 }
|
|
0
|
725 }
|
|
280
|
726
|
|
0
|
727
|
|
20
|
728 DEFUN ("expand-file-name", Fexpand_file_name, 1, 2, 0, /*
|
|
243
|
729 Convert filename NAME to absolute, and canonicalize it.
|
|
|
730 Second arg DEFAULT-DIRECTORY is directory to start with if NAME is relative
|
|
|
731 (does not start with slash); if DEFAULT-DIRECTORY is nil or missing,
|
|
0
|
732 the current buffer's value of default-directory is used.
|
|
243
|
733 File name components that are `.' are removed, and
|
|
|
734 so are file name components followed by `..', along with the `..' itself;
|
|
0
|
735 note that these simplifications are done without checking the resulting
|
|
243
|
736 file names in the file system.
|
|
0
|
737 An initial `~/' expands to your home directory.
|
|
|
738 An initial `~USER/' expands to USER's home directory.
|
|
|
739 See also the function `substitute-in-file-name'.
|
|
20
|
740 */
|
|
243
|
741 (name, default_directory))
|
|
0
|
742 {
|
|
371
|
743 /* This function can GC */
|
|
0
|
744 Bufbyte *nm;
|
|
151
|
745
|
|
0
|
746 Bufbyte *newdir, *p, *o;
|
|
|
747 int tlen;
|
|
|
748 Bufbyte *target;
|
|
410
|
749 #ifdef WIN32_NATIVE
|
|
211
|
750 int drive = 0;
|
|
|
751 int collapse_newdir = 1;
|
|
265
|
752 #else
|
|
|
753 struct passwd *pw;
|
|
410
|
754 #endif /* WIN32_NATIVE */
|
|
211
|
755 int length;
|
|
0
|
756 Lisp_Object handler;
|
|
410
|
757 #ifdef CYGWIN
|
|
294
|
758 char *user;
|
|
|
759 #endif
|
|
151
|
760
|
|
0
|
761 CHECK_STRING (name);
|
|
|
762
|
|
|
763 /* If the file name has special constructs in it,
|
|
|
764 call the corresponding file handler. */
|
|
|
765 handler = Ffind_file_name_handler (name, Qexpand_file_name);
|
|
|
766 if (!NILP (handler))
|
|
371
|
767 return call3_check_string (handler, Qexpand_file_name, name,
|
|
|
768 default_directory);
|
|
243
|
769
|
|
|
770 /* Use the buffer's default-directory if DEFAULT_DIRECTORY is omitted. */
|
|
|
771 if (NILP (default_directory))
|
|
|
772 default_directory = current_buffer->directory;
|
|
|
773 if (! STRINGP (default_directory))
|
|
|
774 default_directory = build_string ("/");
|
|
|
775
|
|
|
776 if (!NILP (default_directory))
|
|
0
|
777 {
|
|
243
|
778 handler = Ffind_file_name_handler (default_directory, Qexpand_file_name);
|
|
|
779 if (!NILP (handler))
|
|
371
|
780 return call3 (handler, Qexpand_file_name, name, default_directory);
|
|
0
|
781 }
|
|
243
|
782
|
|
|
783 o = XSTRING_DATA (default_directory);
|
|
|
784
|
|
|
785 /* Make sure DEFAULT_DIRECTORY is properly expanded.
|
|
0
|
786 It would be better to do this down below where we actually use
|
|
243
|
787 default_directory. Unfortunately, calling Fexpand_file_name recursively
|
|
0
|
788 could invoke GC, and the strings might be relocated. This would
|
|
|
789 be annoying because we have pointers into strings lying around
|
|
|
790 that would need adjusting, and people would add new pointers to
|
|
|
791 the code and forget to adjust them, resulting in intermittent bugs.
|
|
|
792 Putting this call here avoids all that crud.
|
|
|
793
|
|
|
794 The EQ test avoids infinite recursion. */
|
|
243
|
795 if (! NILP (default_directory) && !EQ (default_directory, name)
|
|
211
|
796 /* Save time in some common cases - as long as default_directory
|
|
|
797 is not relative, it can be canonicalized with name below (if it
|
|
|
798 is needed at all) without requiring it to be expanded now. */
|
|
410
|
799 #ifdef WIN32_NATIVE
|
|
|
800 /* Detect Windows file names with drive specifiers. */
|
|
243
|
801 && ! (IS_DRIVE (o[0]) && (IS_DEVICE_SEP (o[1]) && IS_DIRECTORY_SEP (o[2])))
|
|
|
802 /* Detect Windows file names in UNC format. */
|
|
|
803 && ! (IS_DIRECTORY_SEP (o[0]) && IS_DIRECTORY_SEP (o[1]))
|
|
265
|
804
|
|
410
|
805 #else /* not WIN32_NATIVE */
|
|
265
|
806
|
|
243
|
807 /* Detect Unix absolute file names (/... alone is not absolute on
|
|
410
|
808 Windows). */
|
|
243
|
809 && ! (IS_DIRECTORY_SEP (o[0]))
|
|
410
|
810 #endif /* not WIN32_NATIVE */
|
|
243
|
811 )
|
|
371
|
812 {
|
|
|
813 struct gcpro gcpro1;
|
|
|
814
|
|
|
815 GCPRO1 (name);
|
|
|
816 default_directory = Fexpand_file_name (default_directory, Qnil);
|
|
|
817 UNGCPRO;
|
|
|
818 }
|
|
0
|
819
|
|
|
820 #ifdef FILE_SYSTEM_CASE
|
|
|
821 name = FILE_SYSTEM_CASE (name);
|
|
|
822 #endif
|
|
|
823
|
|
243
|
824 /* #### dmoore - this is ugly, clean this up. Looks like nm pointing
|
|
|
825 into name should be safe during all of this, though. */
|
|
16
|
826 nm = XSTRING_DATA (name);
|
|
151
|
827
|
|
410
|
828 #ifdef WIN32_NATIVE
|
|
211
|
829 /* We will force directory separators to be either all \ or /, so make
|
|
|
830 a local copy to modify, even if there ends up being no change. */
|
|
400
|
831 nm = strcpy ((char *)alloca (strlen ((char *)nm) + 1), (char *)nm);
|
|
211
|
832
|
|
|
833 /* Find and remove drive specifier if present; this makes nm absolute
|
|
|
834 even if the rest of the name appears to be relative. */
|
|
0
|
835 {
|
|
400
|
836 Bufbyte *colon = (Bufbyte *) strrchr ((char *)nm, ':');
|
|
243
|
837
|
|
0
|
838 if (colon)
|
|
211
|
839 /* Only recognize colon as part of drive specifier if there is a
|
|
380
|
840 single alphabetic character preceding the colon (and if the
|
|
211
|
841 character before the drive letter, if present, is a directory
|
|
|
842 separator); this is to support the remote system syntax used by
|
|
|
843 ange-ftp, and the "po:username" syntax for POP mailboxes. */
|
|
243
|
844 look_again:
|
|
0
|
845 if (nm == colon)
|
|
|
846 nm++;
|
|
211
|
847 else if (IS_DRIVE (colon[-1])
|
|
|
848 && (colon == nm + 1 || IS_DIRECTORY_SEP (colon[-2])))
|
|
0
|
849 {
|
|
|
850 drive = colon[-1];
|
|
|
851 nm = colon + 1;
|
|
211
|
852 }
|
|
|
853 else
|
|
|
854 {
|
|
|
855 while (--colon >= nm)
|
|
|
856 if (colon[0] == ':')
|
|
|
857 goto look_again;
|
|
151
|
858 }
|
|
0
|
859 }
|
|
211
|
860
|
|
|
861 /* If we see "c://somedir", we want to strip the first slash after the
|
|
|
862 colon when stripping the drive letter. Otherwise, this expands to
|
|
|
863 "//somedir". */
|
|
|
864 if (drive && IS_DIRECTORY_SEP (nm[0]) && IS_DIRECTORY_SEP (nm[1]))
|
|
|
865 nm++;
|
|
410
|
866 #endif /* WIN32_NATIVE */
|
|
211
|
867
|
|
|
868 /* If nm is absolute, look for /./ or /../ sequences; if none are
|
|
|
869 found, we can probably return right away. We will avoid allocating
|
|
|
870 a new string if name is already fully expanded. */
|
|
243
|
871 if (
|
|
|
872 IS_DIRECTORY_SEP (nm[0])
|
|
410
|
873 #ifdef WIN32_NATIVE
|
|
211
|
874 && (drive || IS_DIRECTORY_SEP (nm[1]))
|
|
189
|
875 #endif
|
|
211
|
876 )
|
|
0
|
877 {
|
|
|
878 /* If it turns out that the filename we want to return is just a
|
|
|
879 suffix of FILENAME, we don't need to go through and edit
|
|
|
880 things; we just need to construct a new string using data
|
|
|
881 starting at the middle of FILENAME. If we set lose to a
|
|
|
882 non-zero value, that means we've discovered that we can't do
|
|
|
883 that cool trick. */
|
|
|
884 int lose = 0;
|
|
|
885
|
|
|
886 p = nm;
|
|
|
887 while (*p)
|
|
|
888 {
|
|
243
|
889 /* Since we know the name is absolute, we can assume that each
|
|
0
|
890 element starts with a "/". */
|
|
|
891
|
|
|
892 /* "." and ".." are hairy. */
|
|
|
893 if (IS_DIRECTORY_SEP (p[0])
|
|
|
894 && p[1] == '.'
|
|
|
895 && (IS_DIRECTORY_SEP (p[2])
|
|
|
896 || p[2] == 0
|
|
|
897 || (p[2] == '.' && (IS_DIRECTORY_SEP (p[3])
|
|
|
898 || p[3] == 0))))
|
|
|
899 lose = 1;
|
|
|
900 p++;
|
|
|
901 }
|
|
|
902 if (!lose)
|
|
|
903 {
|
|
410
|
904 #ifdef WIN32_NATIVE
|
|
211
|
905 /* Make sure directories are all separated with / or \ as
|
|
|
906 desired, but avoid allocation of a new string when not
|
|
|
907 required. */
|
|
|
908 CORRECT_DIR_SEPS (nm);
|
|
|
909 if (IS_DIRECTORY_SEP (nm[1]))
|
|
|
910 {
|
|
|
911 if (strcmp (nm, XSTRING_DATA (name)) != 0)
|
|
|
912 name = build_string (nm);
|
|
|
913 }
|
|
243
|
914 /* drive must be set, so this is okay */
|
|
265
|
915 else if (strcmp (nm - 2, XSTRING_DATA (name)) != 0)
|
|
243
|
916 {
|
|
|
917 name = make_string (nm - 2, p - nm + 2);
|
|
|
918 XSTRING_DATA (name)[0] = DRIVE_LETTER (drive);
|
|
|
919 XSTRING_DATA (name)[1] = ':';
|
|
|
920 }
|
|
371
|
921 return name;
|
|
410
|
922 #else /* not WIN32_NATIVE */
|
|
16
|
923 if (nm == XSTRING_DATA (name))
|
|
371
|
924 return name;
|
|
|
925 return build_string ((char *) nm);
|
|
410
|
926 #endif /* not WIN32_NATIVE */
|
|
0
|
927 }
|
|
|
928 }
|
|
|
929
|
|
211
|
930 /* At this point, nm might or might not be an absolute file name. We
|
|
|
931 need to expand ~ or ~user if present, otherwise prefix nm with
|
|
|
932 default_directory if nm is not absolute, and finally collapse /./
|
|
|
933 and /foo/../ sequences.
|
|
|
934
|
|
|
935 We set newdir to be the appropriate prefix if one is needed:
|
|
243
|
936 - the relevant user directory if nm starts with ~ or ~user
|
|
|
937 - the specified drive's working dir (DOS/NT only) if nm does not
|
|
|
938 start with /
|
|
|
939 - the value of default_directory.
|
|
211
|
940
|
|
|
941 Note that these prefixes are not guaranteed to be absolute (except
|
|
|
942 for the working dir of a drive). Therefore, to ensure we always
|
|
|
943 return an absolute name, if the final prefix is not absolute we
|
|
|
944 append it to the current working directory. */
|
|
0
|
945
|
|
|
946 newdir = 0;
|
|
|
947
|
|
|
948 if (nm[0] == '~') /* prefix ~ */
|
|
|
949 {
|
|
|
950 if (IS_DIRECTORY_SEP (nm[1])
|
|
243
|
951 || nm[1] == 0) /* ~ by itself */
|
|
0
|
952 {
|
|
398
|
953 Extbyte *newdir_external = get_home_directory ();
|
|
386
|
954
|
|
|
955 if (newdir_external == NULL)
|
|
0
|
956 newdir = (Bufbyte *) "";
|
|
386
|
957 else
|
|
398
|
958 TO_INTERNAL_FORMAT (C_STRING, newdir_external,
|
|
|
959 C_STRING_ALLOCA, (* ((char **) &newdir)),
|
|
|
960 Qfile_name);
|
|
386
|
961
|
|
0
|
962 nm++;
|
|
410
|
963 #ifdef WIN32_NATIVE
|
|
211
|
964 collapse_newdir = 0;
|
|
243
|
965 #endif
|
|
0
|
966 }
|
|
|
967 else /* ~user/filename */
|
|
|
968 {
|
|
380
|
969 for (p = nm; *p && (!IS_DIRECTORY_SEP (*p)); p++)
|
|
|
970 DO_NOTHING;
|
|
0
|
971 o = (Bufbyte *) alloca (p - nm + 1);
|
|
|
972 memcpy (o, (char *) nm, p - nm);
|
|
|
973 o [p - nm] = 0;
|
|
|
974
|
|
243
|
975 /* #### marcpa's syncing note: FSF uses getpwnam even on NT,
|
|
|
976 which does not work. The following works only if ~USER
|
|
|
977 names the user who runs this instance of XEmacs. While
|
|
|
978 NT is single-user (for the moment) you still can have
|
|
|
979 multiple user profiles users defined, each with its HOME.
|
|
|
980 Therefore, the following should be reworked to handle
|
|
|
981 this case. */
|
|
410
|
982 #ifdef WIN32_NATIVE
|
|
243
|
983 /* Now if the file given is "~foo/file" and HOME="c:/", then
|
|
|
984 we want the file to be named "c:/file" ("~foo" becomes
|
|
|
985 "c:/"). The variable o has "~foo", so we can use the
|
|
|
986 length of that string to offset nm. August Hill, 31 Aug
|
|
|
987 1998. */
|
|
288
|
988 newdir = (Bufbyte *) get_home_directory();
|
|
0
|
989 dostounix_filename (newdir);
|
|
195
|
990 nm += strlen(o) + 1;
|
|
410
|
991 #else /* not WIN32_NATIVE */
|
|
|
992 #ifdef CYGWIN
|
|
294
|
993 if ((user = user_login_name (NULL)) != NULL)
|
|
|
994 {
|
|
|
995 /* Does the user login name match the ~name? */
|
|
398
|
996 if (strcmp (user, (char *) o + 1) == 0)
|
|
380
|
997 {
|
|
398
|
998 newdir = (Bufbyte *) get_home_directory();
|
|
294
|
999 nm = p;
|
|
|
1000 }
|
|
|
1001 }
|
|
|
1002 if (! newdir)
|
|
380
|
1003 {
|
|
410
|
1004 #endif /* CYGWIN */
|
|
0
|
1005 /* Jamie reports that getpwnam() can get wedged by SIGIO/SIGALARM
|
|
|
1006 occurring in it. (It can call select()). */
|
|
|
1007 slow_down_interrupts ();
|
|
|
1008 pw = (struct passwd *) getpwnam ((char *) o + 1);
|
|
|
1009 speed_up_interrupts ();
|
|
|
1010 if (pw)
|
|
|
1011 {
|
|
|
1012 newdir = (Bufbyte *) pw -> pw_dir;
|
|
|
1013 nm = p;
|
|
|
1014 }
|
|
410
|
1015 #ifdef CYGWIN
|
|
294
|
1016 }
|
|
|
1017 #endif
|
|
410
|
1018 #endif /* not WIN32_NATIVE */
|
|
0
|
1019
|
|
|
1020 /* If we don't find a user of that name, leave the name
|
|
|
1021 unchanged; don't move nm forward to p. */
|
|
|
1022 }
|
|
|
1023 }
|
|
|
1024
|
|
410
|
1025 #ifdef WIN32_NATIVE
|
|
211
|
1026 /* On DOS and Windows, nm is absolute if a drive name was specified;
|
|
|
1027 use the drive's current directory as the prefix if needed. */
|
|
|
1028 if (!newdir && drive)
|
|
|
1029 {
|
|
|
1030 /* Get default directory if needed to make nm absolute. */
|
|
|
1031 if (!IS_DIRECTORY_SEP (nm[0]))
|
|
|
1032 {
|
|
|
1033 newdir = alloca (MAXPATHLEN + 1);
|
|
410
|
1034 if (!_getdcwd (toupper (drive) - 'A' + 1, newdir, MAXPATHLEN))
|
|
211
|
1035 newdir = NULL;
|
|
|
1036 }
|
|
|
1037 if (!newdir)
|
|
|
1038 {
|
|
|
1039 /* Either nm starts with /, or drive isn't mounted. */
|
|
|
1040 newdir = alloca (4);
|
|
|
1041 newdir[0] = DRIVE_LETTER (drive);
|
|
|
1042 newdir[1] = ':';
|
|
|
1043 newdir[2] = '/';
|
|
|
1044 newdir[3] = 0;
|
|
|
1045 }
|
|
|
1046 }
|
|
410
|
1047 #endif /* WIN32_NATIVE */
|
|
211
|
1048
|
|
|
1049 /* Finally, if no prefix has been specified and nm is not absolute,
|
|
|
1050 then it must be expanded relative to default_directory. */
|
|
243
|
1051
|
|
211
|
1052 if (1
|
|
410
|
1053 #ifndef WIN32_NATIVE
|
|
243
|
1054 /* /... alone is not absolute on DOS and Windows. */
|
|
|
1055 && !IS_DIRECTORY_SEP (nm[0])
|
|
265
|
1056 #else
|
|
211
|
1057 && !(IS_DIRECTORY_SEP (nm[0]) && IS_DIRECTORY_SEP (nm[1]))
|
|
|
1058 #endif
|
|
243
|
1059 && !newdir)
|
|
0
|
1060 {
|
|
243
|
1061 newdir = XSTRING_DATA (default_directory);
|
|
0
|
1062 }
|
|
|
1063
|
|
410
|
1064 #ifdef WIN32_NATIVE
|
|
211
|
1065 if (newdir)
|
|
|
1066 {
|
|
|
1067 /* First ensure newdir is an absolute name. */
|
|
|
1068 if (
|
|
410
|
1069 /* Detect Windows file names with drive specifiers. */
|
|
211
|
1070 ! (IS_DRIVE (newdir[0])
|
|
|
1071 && IS_DEVICE_SEP (newdir[1]) && IS_DIRECTORY_SEP (newdir[2]))
|
|
|
1072 /* Detect Windows file names in UNC format. */
|
|
|
1073 && ! (IS_DIRECTORY_SEP (newdir[0]) && IS_DIRECTORY_SEP (newdir[1]))
|
|
298
|
1074 /* Detect drive spec by itself */
|
|
|
1075 && ! (IS_DEVICE_SEP (newdir[1]) && newdir[2] == 0)
|
|
211
|
1076 )
|
|
|
1077 {
|
|
|
1078 /* Effectively, let newdir be (expand-file-name newdir cwd).
|
|
|
1079 Because of the admonition against calling expand-file-name
|
|
|
1080 when we have pointers into lisp strings, we accomplish this
|
|
|
1081 indirectly by prepending newdir to nm if necessary, and using
|
|
|
1082 cwd (or the wd of newdir's drive) as the new newdir. */
|
|
|
1083
|
|
|
1084 if (IS_DRIVE (newdir[0]) && newdir[1] == ':')
|
|
|
1085 {
|
|
|
1086 drive = newdir[0];
|
|
|
1087 newdir += 2;
|
|
|
1088 }
|
|
|
1089 if (!IS_DIRECTORY_SEP (nm[0]))
|
|
|
1090 {
|
|
|
1091 char * tmp = alloca (strlen (newdir) + strlen (nm) + 2);
|
|
|
1092 file_name_as_directory (tmp, newdir);
|
|
|
1093 strcat (tmp, nm);
|
|
|
1094 nm = tmp;
|
|
|
1095 }
|
|
|
1096 newdir = alloca (MAXPATHLEN + 1);
|
|
|
1097 if (drive)
|
|
|
1098 {
|
|
410
|
1099 if (!_getdcwd (toupper (drive) - 'A' + 1, newdir, MAXPATHLEN))
|
|
211
|
1100 newdir = "/";
|
|
|
1101 }
|
|
|
1102 else
|
|
|
1103 getwd (newdir);
|
|
|
1104 }
|
|
|
1105
|
|
|
1106 /* Strip off drive name from prefix, if present. */
|
|
|
1107 if (IS_DRIVE (newdir[0]) && newdir[1] == ':')
|
|
|
1108 {
|
|
|
1109 drive = newdir[0];
|
|
|
1110 newdir += 2;
|
|
|
1111 }
|
|
|
1112
|
|
|
1113 /* Keep only a prefix from newdir if nm starts with slash
|
|
225
|
1114 (/ /server/share for UNC, nothing otherwise). */
|
|
211
|
1115 if (IS_DIRECTORY_SEP (nm[0]) && collapse_newdir)
|
|
|
1116 {
|
|
|
1117 if (IS_DIRECTORY_SEP (newdir[0]) && IS_DIRECTORY_SEP (newdir[1]))
|
|
|
1118 {
|
|
|
1119 newdir = strcpy (alloca (strlen (newdir) + 1), newdir);
|
|
|
1120 p = newdir + 2;
|
|
|
1121 while (*p && !IS_DIRECTORY_SEP (*p)) p++;
|
|
|
1122 p++;
|
|
|
1123 while (*p && !IS_DIRECTORY_SEP (*p)) p++;
|
|
|
1124 *p = 0;
|
|
|
1125 }
|
|
|
1126 else
|
|
|
1127 newdir = "";
|
|
|
1128 }
|
|
|
1129 }
|
|
410
|
1130 #endif /* WIN32_NATIVE */
|
|
243
|
1131
|
|
|
1132 if (newdir)
|
|
0
|
1133 {
|
|
211
|
1134 /* Get rid of any slash at the end of newdir, unless newdir is
|
|
|
1135 just // (an incomplete UNC name). */
|
|
272
|
1136 length = strlen ((char *) newdir);
|
|
276
|
1137 if (length > 1 && IS_DIRECTORY_SEP (newdir[length - 1])
|
|
410
|
1138 #ifdef WIN32_NATIVE
|
|
211
|
1139 && !(length == 2 && IS_DIRECTORY_SEP (newdir[0]))
|
|
0
|
1140 #endif
|
|
211
|
1141 )
|
|
0
|
1142 {
|
|
|
1143 Bufbyte *temp = (Bufbyte *) alloca (length);
|
|
|
1144 memcpy (temp, newdir, length - 1);
|
|
|
1145 temp[length - 1] = 0;
|
|
|
1146 newdir = temp;
|
|
|
1147 }
|
|
|
1148 tlen = length + 1;
|
|
|
1149 }
|
|
|
1150 else
|
|
|
1151 tlen = 0;
|
|
|
1152
|
|
|
1153 /* Now concatenate the directory and name to new space in the stack frame */
|
|
272
|
1154 tlen += strlen ((char *) nm) + 1;
|
|
410
|
1155 #ifdef WIN32_NATIVE
|
|
151
|
1156 /* Add reserved space for drive name. (The Microsoft x86 compiler
|
|
0
|
1157 produces incorrect code if the following two lines are combined.) */
|
|
|
1158 target = (Bufbyte *) alloca (tlen + 2);
|
|
|
1159 target += 2;
|
|
410
|
1160 #else /* not WIN32_NATIVE */
|
|
0
|
1161 target = (Bufbyte *) alloca (tlen);
|
|
410
|
1162 #endif /* not WIN32_NATIVE */
|
|
0
|
1163 *target = 0;
|
|
|
1164
|
|
|
1165 if (newdir)
|
|
|
1166 {
|
|
|
1167 if (nm[0] == 0 || IS_DIRECTORY_SEP (nm[0]))
|
|
272
|
1168 strcpy ((char *) target, (char *) newdir);
|
|
0
|
1169 else
|
|
272
|
1170 file_name_as_directory ((char *) target, (char *) newdir);
|
|
0
|
1171 }
|
|
|
1172
|
|
272
|
1173 strcat ((char *) target, (char *) nm);
|
|
243
|
1174
|
|
|
1175 /* ASSERT (IS_DIRECTORY_SEP (target[0])) if not VMS */
|
|
0
|
1176
|
|
|
1177 /* Now canonicalize by removing /. and /foo/.. if they appear. */
|
|
|
1178
|
|
|
1179 p = target;
|
|
|
1180 o = target;
|
|
|
1181
|
|
|
1182 while (*p)
|
|
|
1183 {
|
|
|
1184 if (!IS_DIRECTORY_SEP (*p))
|
|
|
1185 {
|
|
|
1186 *o++ = *p++;
|
|
|
1187 }
|
|
|
1188 else if (IS_DIRECTORY_SEP (p[0])
|
|
243
|
1189 && p[1] == '.'
|
|
0
|
1190 && (IS_DIRECTORY_SEP (p[2])
|
|
|
1191 || p[2] == 0))
|
|
|
1192 {
|
|
|
1193 /* If "/." is the entire filename, keep the "/". Otherwise,
|
|
|
1194 just delete the whole "/.". */
|
|
|
1195 if (o == target && p[2] == '\0')
|
|
|
1196 *o++ = *p;
|
|
|
1197 p += 2;
|
|
|
1198 }
|
|
|
1199 else if (IS_DIRECTORY_SEP (p[0]) && p[1] == '.' && p[2] == '.'
|
|
|
1200 /* `/../' is the "superroot" on certain file systems. */
|
|
|
1201 && o != target
|
|
|
1202 && (IS_DIRECTORY_SEP (p[3]) || p[3] == 0))
|
|
|
1203 {
|
|
|
1204 while (o != target && (--o) && !IS_DIRECTORY_SEP (*o))
|
|
|
1205 ;
|
|
243
|
1206 /* Keep initial / only if this is the whole name. */
|
|
|
1207 if (o == target && IS_ANY_SEP (*o) && p[3] == 0)
|
|
0
|
1208 ++o;
|
|
|
1209 p += 3;
|
|
|
1210 }
|
|
410
|
1211 #ifdef WIN32_NATIVE
|
|
298
|
1212 /* if drive is set, we're not dealing with an UNC, so
|
|
|
1213 multiple dir-seps are redundant (and reportedly cause trouble
|
|
|
1214 under win95) */
|
|
|
1215 else if (drive && IS_DIRECTORY_SEP (p[0]) && IS_DIRECTORY_SEP (p[1]))
|
|
|
1216 ++p;
|
|
|
1217 #endif
|
|
0
|
1218 else
|
|
|
1219 {
|
|
|
1220 *o++ = *p++;
|
|
|
1221 }
|
|
|
1222 }
|
|
|
1223
|
|
410
|
1224 #ifdef WIN32_NATIVE
|
|
265
|
1225 /* At last, set drive name, except for network file name. */
|
|
298
|
1226 if (drive)
|
|
0
|
1227 {
|
|
|
1228 target -= 2;
|
|
211
|
1229 target[0] = DRIVE_LETTER (drive);
|
|
0
|
1230 target[1] = ':';
|
|
|
1231 }
|
|
298
|
1232 else
|
|
|
1233 {
|
|
386
|
1234 assert (IS_DIRECTORY_SEP (target[0]) && IS_DIRECTORY_SEP (target[1]));
|
|
298
|
1235 }
|
|
211
|
1236 CORRECT_DIR_SEPS (target);
|
|
410
|
1237 #endif /* WIN32_NATIVE */
|
|
0
|
1238
|
|
371
|
1239 return make_string (target, o - target);
|
|
0
|
1240 }
|
|
|
1241
|
|
20
|
1242 DEFUN ("file-truename", Ffile_truename, 1, 2, 0, /*
|
|
0
|
1243 Return the canonical name of the given FILE.
|
|
|
1244 Second arg DEFAULT is directory to start with if FILE is relative
|
|
|
1245 (does not start with slash); if DEFAULT is nil or missing,
|
|
|
1246 the current buffer's value of default-directory is used.
|
|
|
1247 No component of the resulting pathname will be a symbolic link, as
|
|
|
1248 in the realpath() function.
|
|
20
|
1249 */
|
|
173
|
1250 (filename, default_))
|
|
0
|
1251 {
|
|
400
|
1252 /* This function can GC. */
|
|
0
|
1253 Lisp_Object expanded_name;
|
|
120
|
1254 struct gcpro gcpro1;
|
|
0
|
1255
|
|
|
1256 CHECK_STRING (filename);
|
|
|
1257
|
|
173
|
1258 expanded_name = Fexpand_file_name (filename, default_);
|
|
0
|
1259
|
|
400
|
1260 GCPRO1 (expanded_name);
|
|
|
1261
|
|
0
|
1262 if (!STRINGP (expanded_name))
|
|
|
1263 return Qnil;
|
|
|
1264
|
|
400
|
1265 {
|
|
|
1266 Lisp_Object handler =
|
|
|
1267 Ffind_file_name_handler (expanded_name, Qfile_truename);
|
|
|
1268
|
|
|
1269 if (!NILP (handler))
|
|
|
1270 RETURN_UNGCPRO
|
|
|
1271 (call2_check_string (handler, Qfile_truename, expanded_name));
|
|
|
1272 }
|
|
0
|
1273
|
|
|
1274 {
|
|
|
1275 char resolved_path[MAXPATHLEN];
|
|
398
|
1276 Extbyte *path;
|
|
|
1277 Extbyte *p;
|
|
|
1278 Extcount elen;
|
|
|
1279
|
|
|
1280 TO_EXTERNAL_FORMAT (LISP_STRING, expanded_name,
|
|
|
1281 ALLOCA, (path, elen),
|
|
|
1282 Qfile_name);
|
|
|
1283 p = path;
|
|
|
1284 if (elen > MAXPATHLEN)
|
|
0
|
1285 goto toolong;
|
|
400
|
1286
|
|
0
|
1287 /* Try doing it all at once. */
|
|
398
|
1288 /* !! Does realpath() Mule-encapsulate?
|
|
|
1289 Answer: Nope! So we do it above */
|
|
|
1290 if (!xrealpath ((char *) path, resolved_path))
|
|
0
|
1291 {
|
|
|
1292 /* Didn't resolve it -- have to do it one component at a time. */
|
|
|
1293 /* "realpath" is a typically useless, stupid un*x piece of crap.
|
|
|
1294 It claims to return a useful value in the "error" case, but since
|
|
|
1295 there is no indication provided of how far along the pathname
|
|
|
1296 the function went before erring, there is no way to use the
|
|
400
|
1297 partial result returned. What a piece of junk.
|
|
|
1298
|
|
|
1299 The above comment refers to historical versions of
|
|
|
1300 realpath(). The Unix98 specs state:
|
|
|
1301
|
|
|
1302 "On successful completion, realpath() returns a
|
|
|
1303 pointer to the resolved name. Otherwise, realpath()
|
|
|
1304 returns a null pointer and sets errno to indicate the
|
|
|
1305 error, and the contents of the buffer pointed to by
|
|
|
1306 resolved_name are undefined."
|
|
|
1307
|
|
|
1308 Since we depend on undocumented semantics of various system realpath()s,
|
|
|
1309 we just use our own version in realpath.c. */
|
|
0
|
1310 for (;;)
|
|
|
1311 {
|
|
398
|
1312 p = (Extbyte *) memchr (p + 1, '/', elen - (p + 1 - path));
|
|
0
|
1313 if (p)
|
|
|
1314 *p = 0;
|
|
|
1315
|
|
398
|
1316 if (xrealpath ((char *) path, resolved_path))
|
|
0
|
1317 {
|
|
|
1318 if (p)
|
|
|
1319 *p = '/';
|
|
|
1320 else
|
|
|
1321 break;
|
|
|
1322
|
|
|
1323 }
|
|
209
|
1324 else if (errno == ENOENT || errno == EACCES)
|
|
0
|
1325 {
|
|
|
1326 /* Failed on this component. Just tack on the rest of
|
|
|
1327 the string and we are done. */
|
|
|
1328 int rlen = strlen (resolved_path);
|
|
|
1329
|
|
|
1330 /* "On failure, it returns NULL, sets errno to indicate
|
|
|
1331 the error, and places in resolved_path the absolute pathname
|
|
|
1332 of the path component which could not be resolved." */
|
|
400
|
1333
|
|
|
1334 if (p)
|
|
0
|
1335 {
|
|
|
1336 int plen = elen - (p - path);
|
|
151
|
1337
|
|
0
|
1338 if (rlen > 1 && resolved_path[rlen - 1] == '/')
|
|
|
1339 rlen = rlen - 1;
|
|
|
1340
|
|
|
1341 if (plen + rlen + 1 > countof (resolved_path))
|
|
|
1342 goto toolong;
|
|
|
1343
|
|
|
1344 resolved_path[rlen] = '/';
|
|
|
1345 memcpy (resolved_path + rlen + 1, p + 1, plen + 1 - 1);
|
|
|
1346 }
|
|
|
1347 break;
|
|
|
1348 }
|
|
|
1349 else
|
|
|
1350 goto lose;
|
|
|
1351 }
|
|
|
1352 }
|
|
|
1353
|
|
|
1354 {
|
|
400
|
1355 Lisp_Object resolved_name;
|
|
0
|
1356 int rlen = strlen (resolved_path);
|
|
82
|
1357 if (elen > 0 && XSTRING_BYTE (expanded_name, elen - 1) == '/'
|
|
0
|
1358 && !(rlen > 0 && resolved_path[rlen - 1] == '/'))
|
|
|
1359 {
|
|
|
1360 if (rlen + 1 > countof (resolved_path))
|
|
|
1361 goto toolong;
|
|
400
|
1362 resolved_path[rlen++] = '/';
|
|
|
1363 resolved_path[rlen] = '\0';
|
|
0
|
1364 }
|
|
400
|
1365 TO_INTERNAL_FORMAT (DATA, (resolved_path, rlen),
|
|
|
1366 LISP_STRING, resolved_name,
|
|
|
1367 Qfile_name);
|
|
|
1368 RETURN_UNGCPRO (resolved_name);
|
|
0
|
1369 }
|
|
|
1370
|
|
|
1371 toolong:
|
|
|
1372 errno = ENAMETOOLONG;
|
|
|
1373 goto lose;
|
|
|
1374 lose:
|
|
|
1375 report_file_error ("Finding truename", list1 (expanded_name));
|
|
|
1376 }
|
|
400
|
1377 RETURN_UNGCPRO (Qnil);
|
|
0
|
1378 }
|
|
|
1379
|
|
|
1380
|
|
20
|
1381 DEFUN ("substitute-in-file-name", Fsubstitute_in_file_name, 1, 1, 0, /*
|
|
0
|
1382 Substitute environment variables referred to in FILENAME.
|
|
|
1383 `$FOO' where FOO is an environment variable name means to substitute
|
|
|
1384 the value of that variable. The variable name should be terminated
|
|
|
1385 with a character not a letter, digit or underscore; otherwise, enclose
|
|
|
1386 the entire variable name in braces.
|
|
|
1387 If `/~' appears, all of FILENAME through that `/' is discarded.
|
|
|
1388
|
|
20
|
1389 */
|
|
|
1390 (string))
|
|
0
|
1391 {
|
|
120
|
1392 /* This function can GC. GC checked 1997.04.06. */
|
|
0
|
1393 Bufbyte *nm;
|
|
|
1394
|
|
|
1395 Bufbyte *s, *p, *o, *x, *endp;
|
|
|
1396 Bufbyte *target = 0;
|
|
|
1397 int total = 0;
|
|
|
1398 int substituted = 0;
|
|
|
1399 Bufbyte *xnm;
|
|
|
1400 Lisp_Object handler;
|
|
|
1401
|
|
|
1402 CHECK_STRING (string);
|
|
|
1403
|
|
|
1404 /* If the file name has special constructs in it,
|
|
|
1405 call the corresponding file handler. */
|
|
|
1406 handler = Ffind_file_name_handler (string, Qsubstitute_in_file_name);
|
|
|
1407 if (!NILP (handler))
|
|
173
|
1408 return call2_check_string_or_nil (handler, Qsubstitute_in_file_name,
|
|
|
1409 string);
|
|
0
|
1410
|
|
16
|
1411 nm = XSTRING_DATA (string);
|
|
|
1412 endp = nm + XSTRING_LENGTH (string);
|
|
0
|
1413
|
|
|
1414 /* If /~ or // appears, discard everything through first slash. */
|
|
|
1415
|
|
|
1416 for (p = nm; p != endp; p++)
|
|
|
1417 {
|
|
211
|
1418 if ((p[0] == '~'
|
|
410
|
1419 #if defined (WIN32_NATIVE) || defined (CYGWIN)
|
|
398
|
1420 /* // at start of file name is meaningful in WindowsNT systems */
|
|
211
|
1421 || (IS_DIRECTORY_SEP (p[0]) && p - 1 != nm)
|
|
410
|
1422 #else /* not (WIN32_NATIVE || CYGWIN) */
|
|
211
|
1423 || IS_DIRECTORY_SEP (p[0])
|
|
410
|
1424 #endif /* not (WIN32_NATIVE || CYGWIN) */
|
|
0
|
1425 )
|
|
|
1426 && p != nm
|
|
209
|
1427 && (IS_DIRECTORY_SEP (p[-1])))
|
|
0
|
1428 {
|
|
|
1429 nm = p;
|
|
|
1430 substituted = 1;
|
|
|
1431 }
|
|
410
|
1432 #ifdef WIN32_NATIVE
|
|
211
|
1433 /* see comment in expand-file-name about drive specifiers */
|
|
|
1434 else if (IS_DRIVE (p[0]) && p[1] == ':'
|
|
|
1435 && p > nm && IS_DIRECTORY_SEP (p[-1]))
|
|
0
|
1436 {
|
|
|
1437 nm = p;
|
|
|
1438 substituted = 1;
|
|
|
1439 }
|
|
410
|
1440 #endif /* WIN32_NATIVE */
|
|
0
|
1441 }
|
|
|
1442
|
|
|
1443 /* See if any variables are substituted into the string
|
|
|
1444 and find the total length of their values in `total' */
|
|
|
1445
|
|
|
1446 for (p = nm; p != endp;)
|
|
|
1447 if (*p != '$')
|
|
|
1448 p++;
|
|
|
1449 else
|
|
|
1450 {
|
|
|
1451 p++;
|
|
|
1452 if (p == endp)
|
|
|
1453 goto badsubst;
|
|
|
1454 else if (*p == '$')
|
|
|
1455 {
|
|
|
1456 /* "$$" means a single "$" */
|
|
|
1457 p++;
|
|
|
1458 total -= 1;
|
|
|
1459 substituted = 1;
|
|
|
1460 continue;
|
|
|
1461 }
|
|
|
1462 else if (*p == '{')
|
|
|
1463 {
|
|
|
1464 o = ++p;
|
|
|
1465 while (p != endp && *p != '}') p++;
|
|
|
1466 if (*p != '}') goto missingclose;
|
|
|
1467 s = p;
|
|
|
1468 }
|
|
|
1469 else
|
|
|
1470 {
|
|
|
1471 o = p;
|
|
|
1472 while (p != endp && (isalnum (*p) || *p == '_')) p++;
|
|
|
1473 s = p;
|
|
|
1474 }
|
|
|
1475
|
|
|
1476 /* Copy out the variable name */
|
|
|
1477 target = (Bufbyte *) alloca (s - o + 1);
|
|
|
1478 strncpy ((char *) target, (char *) o, s - o);
|
|
|
1479 target[s - o] = 0;
|
|
410
|
1480 #ifdef WIN32_NATIVE
|
|
0
|
1481 strupr (target); /* $home == $HOME etc. */
|
|
410
|
1482 #endif /* WIN32_NATIVE */
|
|
0
|
1483
|
|
|
1484 /* Get variable value */
|
|
|
1485 o = (Bufbyte *) egetenv ((char *) target);
|
|
|
1486 if (!o) goto badvar;
|
|
|
1487 total += strlen ((char *) o);
|
|
|
1488 substituted = 1;
|
|
|
1489 }
|
|
|
1490
|
|
|
1491 if (!substituted)
|
|
|
1492 return string;
|
|
|
1493
|
|
|
1494 /* If substitution required, recopy the string and do it */
|
|
|
1495 /* Make space in stack frame for the new copy */
|
|
16
|
1496 xnm = (Bufbyte *) alloca (XSTRING_LENGTH (string) + total + 1);
|
|
0
|
1497 x = xnm;
|
|
|
1498
|
|
|
1499 /* Copy the rest of the name through, replacing $ constructs with values */
|
|
|
1500 for (p = nm; *p;)
|
|
|
1501 if (*p != '$')
|
|
|
1502 *x++ = *p++;
|
|
|
1503 else
|
|
|
1504 {
|
|
|
1505 p++;
|
|
|
1506 if (p == endp)
|
|
|
1507 goto badsubst;
|
|
|
1508 else if (*p == '$')
|
|
|
1509 {
|
|
|
1510 *x++ = *p++;
|
|
|
1511 continue;
|
|
|
1512 }
|
|
|
1513 else if (*p == '{')
|
|
|
1514 {
|
|
|
1515 o = ++p;
|
|
|
1516 while (p != endp && *p != '}') p++;
|
|
|
1517 if (*p != '}') goto missingclose;
|
|
|
1518 s = p++;
|
|
|
1519 }
|
|
|
1520 else
|
|
|
1521 {
|
|
|
1522 o = p;
|
|
|
1523 while (p != endp && (isalnum (*p) || *p == '_')) p++;
|
|
|
1524 s = p;
|
|
|
1525 }
|
|
|
1526
|
|
|
1527 /* Copy out the variable name */
|
|
|
1528 target = (Bufbyte *) alloca (s - o + 1);
|
|
|
1529 strncpy ((char *) target, (char *) o, s - o);
|
|
|
1530 target[s - o] = 0;
|
|
410
|
1531 #ifdef WIN32_NATIVE
|
|
0
|
1532 strupr (target); /* $home == $HOME etc. */
|
|
410
|
1533 #endif /* WIN32_NATIVE */
|
|
0
|
1534
|
|
|
1535 /* Get variable value */
|
|
|
1536 o = (Bufbyte *) egetenv ((char *) target);
|
|
|
1537 if (!o)
|
|
|
1538 goto badvar;
|
|
|
1539
|
|
|
1540 strcpy ((char *) x, (char *) o);
|
|
|
1541 x += strlen ((char *) o);
|
|
|
1542 }
|
|
|
1543
|
|
|
1544 *x = 0;
|
|
|
1545
|
|
|
1546 /* If /~ or // appears, discard everything through first slash. */
|
|
|
1547
|
|
|
1548 for (p = xnm; p != x; p++)
|
|
|
1549 if ((p[0] == '~'
|
|
410
|
1550 #if defined (WIN32_NATIVE)
|
|
0
|
1551 || (IS_DIRECTORY_SEP (p[0]) && p - 1 != xnm)
|
|
410
|
1552 #else /* not WIN32_NATIVE */
|
|
211
|
1553 || IS_DIRECTORY_SEP (p[0])
|
|
410
|
1554 #endif /* not WIN32_NATIVE */
|
|
0
|
1555 )
|
|
|
1556 /* don't do p[-1] if that would go off the beginning --jwz */
|
|
|
1557 && p != nm && p > xnm && IS_DIRECTORY_SEP (p[-1]))
|
|
|
1558 xnm = p;
|
|
410
|
1559 #ifdef WIN32_NATIVE
|
|
211
|
1560 else if (IS_DRIVE (p[0]) && p[1] == ':'
|
|
|
1561 && p > nm && IS_DIRECTORY_SEP (p[-1]))
|
|
0
|
1562 xnm = p;
|
|
|
1563 #endif
|
|
|
1564
|
|
|
1565 return make_string (xnm, x - xnm);
|
|
|
1566
|
|
|
1567 badsubst:
|
|
|
1568 error ("Bad format environment-variable substitution");
|
|
|
1569 missingclose:
|
|
|
1570 error ("Missing \"}\" in environment-variable substitution");
|
|
|
1571 badvar:
|
|
|
1572 error ("Substituting nonexistent environment variable \"%s\"",
|
|
|
1573 target);
|
|
|
1574
|
|
|
1575 /* NOTREACHED */
|
|
|
1576 return Qnil; /* suppress compiler warning */
|
|
|
1577 }
|
|
|
1578
|
|
211
|
1579 /* A slightly faster and more convenient way to get
|
|
|
1580 (directory-file-name (expand-file-name FOO)). */
|
|
0
|
1581
|
|
|
1582 Lisp_Object
|
|
|
1583 expand_and_dir_to_file (Lisp_Object filename, Lisp_Object defdir)
|
|
|
1584 {
|
|
116
|
1585 /* This function can call lisp */
|
|
0
|
1586 Lisp_Object abspath;
|
|
|
1587 struct gcpro gcpro1;
|
|
|
1588
|
|
|
1589 abspath = Fexpand_file_name (filename, defdir);
|
|
116
|
1590 GCPRO1 (abspath);
|
|
0
|
1591 /* Remove final slash, if any (unless path is root).
|
|
|
1592 stat behaves differently depending! */
|
|
16
|
1593 if (XSTRING_LENGTH (abspath) > 1
|
|
82
|
1594 && IS_DIRECTORY_SEP (XSTRING_BYTE (abspath, XSTRING_LENGTH (abspath) - 1))
|
|
|
1595 && !IS_DEVICE_SEP (XSTRING_BYTE (abspath, XSTRING_LENGTH (abspath) - 2)))
|
|
0
|
1596 /* We cannot take shortcuts; they might be wrong for magic file names. */
|
|
|
1597 abspath = Fdirectory_file_name (abspath);
|
|
|
1598 UNGCPRO;
|
|
|
1599 return abspath;
|
|
|
1600 }
|
|
|
1601
|
|
|
1602 /* Signal an error if the file ABSNAME already exists.
|
|
|
1603 If INTERACTIVE is nonzero, ask the user whether to proceed,
|
|
|
1604 and bypass the error if the user says to go ahead.
|
|
|
1605 QUERYSTRING is a name for the action that is being considered
|
|
|
1606 to alter the file.
|
|
|
1607 *STATPTR is used to store the stat information if the file exists.
|
|
|
1608 If the file does not exist, STATPTR->st_mode is set to 0. */
|
|
|
1609
|
|
|
1610 static void
|
|
398
|
1611 barf_or_query_if_file_exists (Lisp_Object absname, const char *querystring,
|
|
0
|
1612 int interactive, struct stat *statptr)
|
|
|
1613 {
|
|
120
|
1614 /* This function can GC. GC checked 1997.04.06. */
|
|
0
|
1615 struct stat statbuf;
|
|
|
1616
|
|
|
1617 /* stat is a good way to tell whether the file exists,
|
|
|
1618 regardless of what access permissions it has. */
|
|
16
|
1619 if (stat ((char *) XSTRING_DATA (absname), &statbuf) >= 0)
|
|
0
|
1620 {
|
|
|
1621 Lisp_Object tem;
|
|
116
|
1622
|
|
0
|
1623 if (interactive)
|
|
116
|
1624 {
|
|
|
1625 Lisp_Object prompt;
|
|
|
1626 struct gcpro gcpro1;
|
|
|
1627
|
|
|
1628 prompt = emacs_doprnt_string_c
|
|
398
|
1629 ((const Bufbyte *) GETTEXT ("File %s already exists; %s anyway? "),
|
|
16
|
1630 Qnil, -1, XSTRING_DATA (absname),
|
|
116
|
1631 GETTEXT (querystring));
|
|
151
|
1632
|
|
116
|
1633 GCPRO1 (prompt);
|
|
|
1634 tem = call1 (Qyes_or_no_p, prompt);
|
|
|
1635 UNGCPRO;
|
|
|
1636 }
|
|
0
|
1637 else
|
|
|
1638 tem = Qnil;
|
|
116
|
1639
|
|
0
|
1640 if (NILP (tem))
|
|
|
1641 Fsignal (Qfile_already_exists,
|
|
|
1642 list2 (build_translated_string ("File already exists"),
|
|
|
1643 absname));
|
|
|
1644 if (statptr)
|
|
|
1645 *statptr = statbuf;
|
|
|
1646 }
|
|
|
1647 else
|
|
|
1648 {
|
|
|
1649 if (statptr)
|
|
|
1650 statptr->st_mode = 0;
|
|
|
1651 }
|
|
|
1652 return;
|
|
|
1653 }
|
|
|
1654
|
|
20
|
1655 DEFUN ("copy-file", Fcopy_file, 2, 4,
|
|
|
1656 "fCopy file: \nFCopy %s to file: \np\nP", /*
|
|
0
|
1657 Copy FILE to NEWNAME. Both args must be strings.
|
|
|
1658 Signals a `file-already-exists' error if file NEWNAME already exists,
|
|
|
1659 unless a third argument OK-IF-ALREADY-EXISTS is supplied and non-nil.
|
|
|
1660 A number as third arg means request confirmation if NEWNAME already exists.
|
|
|
1661 This is what happens in interactive use with M-x.
|
|
|
1662 Fourth arg KEEP-TIME non-nil means give the new file the same
|
|
|
1663 last-modified time as the old one. (This works on only some systems.)
|
|
|
1664 A prefix arg makes KEEP-TIME non-nil.
|
|
20
|
1665 */
|
|
74
|
1666 (filename, newname, ok_if_already_exists, keep_time))
|
|
0
|
1667 {
|
|
120
|
1668 /* This function can GC. GC checked 1997.04.06. */
|
|
0
|
1669 int ifd, ofd, n;
|
|
|
1670 char buf[16 * 1024];
|
|
|
1671 struct stat st, out_st;
|
|
|
1672 Lisp_Object handler;
|
|
|
1673 int speccount = specpdl_depth ();
|
|
|
1674 struct gcpro gcpro1, gcpro2;
|
|
|
1675 /* Lisp_Object args[6]; */
|
|
|
1676 int input_file_statable_p;
|
|
|
1677
|
|
|
1678 GCPRO2 (filename, newname);
|
|
|
1679 CHECK_STRING (filename);
|
|
|
1680 CHECK_STRING (newname);
|
|
|
1681 filename = Fexpand_file_name (filename, Qnil);
|
|
|
1682 newname = Fexpand_file_name (newname, Qnil);
|
|
|
1683
|
|
|
1684 /* If the input file name has special constructs in it,
|
|
|
1685 call the corresponding file handler. */
|
|
|
1686 handler = Ffind_file_name_handler (filename, Qcopy_file);
|
|
|
1687 /* Likewise for output file name. */
|
|
|
1688 if (NILP (handler))
|
|
|
1689 handler = Ffind_file_name_handler (newname, Qcopy_file);
|
|
|
1690 if (!NILP (handler))
|
|
|
1691 {
|
|
|
1692 UNGCPRO;
|
|
|
1693 return call5 (handler, Qcopy_file, filename, newname,
|
|
74
|
1694 ok_if_already_exists, keep_time);
|
|
0
|
1695 }
|
|
|
1696
|
|
|
1697 /* When second argument is a directory, copy the file into it.
|
|
|
1698 (copy-file "foo" "bar/") == (copy-file "foo" "bar/foo")
|
|
|
1699 */
|
|
|
1700 if (!NILP (Ffile_directory_p (newname)))
|
|
|
1701 {
|
|
|
1702 Lisp_Object args[3];
|
|
|
1703 struct gcpro ngcpro1;
|
|
|
1704 int i = 1;
|
|
|
1705
|
|
151
|
1706 args[0] = newname;
|
|
0
|
1707 args[1] = Qnil; args[2] = Qnil;
|
|
151
|
1708 NGCPRO1 (*args);
|
|
0
|
1709 ngcpro1.nvars = 3;
|
|
82
|
1710 if (XSTRING_BYTE (newname, XSTRING_LENGTH (newname) - 1) != '/')
|
|
0
|
1711 args[i++] = build_string ("/");
|
|
|
1712 args[i++] = Ffile_name_nondirectory (filename);
|
|
|
1713 newname = Fconcat (i, args);
|
|
|
1714 NUNGCPRO;
|
|
|
1715 }
|
|
|
1716
|
|
|
1717 if (NILP (ok_if_already_exists)
|
|
|
1718 || INTP (ok_if_already_exists))
|
|
|
1719 barf_or_query_if_file_exists (newname, "copy to it",
|
|
|
1720 INTP (ok_if_already_exists), &out_st);
|
|
398
|
1721 else if (stat ((const char *) XSTRING_DATA (newname), &out_st) < 0)
|
|
0
|
1722 out_st.st_mode = 0;
|
|
|
1723
|
|
251
|
1724 ifd = interruptible_open ((char *) XSTRING_DATA (filename), O_RDONLY | OPEN_BINARY, 0);
|
|
0
|
1725 if (ifd < 0)
|
|
227
|
1726 report_file_error ("Opening input file", list1 (filename));
|
|
0
|
1727
|
|
|
1728 record_unwind_protect (close_file_unwind, make_int (ifd));
|
|
|
1729
|
|
|
1730 /* We can only copy regular files and symbolic links. Other files are not
|
|
|
1731 copyable by us. */
|
|
|
1732 input_file_statable_p = (fstat (ifd, &st) >= 0);
|
|
|
1733
|
|
410
|
1734 #ifndef WIN32_NATIVE
|
|
0
|
1735 if (out_st.st_mode != 0
|
|
|
1736 && st.st_dev == out_st.st_dev && st.st_ino == out_st.st_ino)
|
|
|
1737 {
|
|
|
1738 errno = 0;
|
|
|
1739 report_file_error ("Input and output files are the same",
|
|
227
|
1740 list2 (filename, newname));
|
|
0
|
1741 }
|
|
|
1742 #endif
|
|
|
1743
|
|
|
1744 #if defined (S_ISREG) && defined (S_ISLNK)
|
|
|
1745 if (input_file_statable_p)
|
|
|
1746 {
|
|
|
1747 if (!(S_ISREG (st.st_mode))
|
|
|
1748 /* XEmacs: have to allow S_ISCHR in order to copy /dev/null */
|
|
|
1749 #ifdef S_ISCHR
|
|
|
1750 && !(S_ISCHR (st.st_mode))
|
|
|
1751 #endif
|
|
|
1752 && !(S_ISLNK (st.st_mode)))
|
|
|
1753 {
|
|
|
1754 #if defined (EISDIR)
|
|
|
1755 /* Get a better looking error message. */
|
|
|
1756 errno = EISDIR;
|
|
|
1757 #endif /* EISDIR */
|
|
227
|
1758 report_file_error ("Non-regular file", list1 (filename));
|
|
0
|
1759 }
|
|
|
1760 }
|
|
|
1761 #endif /* S_ISREG && S_ISLNK */
|
|
|
1762
|
|
380
|
1763 ofd = open( (char *) XSTRING_DATA (newname),
|
|
251
|
1764 O_WRONLY | O_CREAT | O_TRUNC | OPEN_BINARY, CREAT_MODE);
|
|
0
|
1765 if (ofd < 0)
|
|
|
1766 report_file_error ("Opening output file", list1 (newname));
|
|
|
1767
|
|
|
1768 {
|
|
|
1769 Lisp_Object ofd_locative = noseeum_cons (make_int (ofd), Qnil);
|
|
|
1770
|
|
|
1771 record_unwind_protect (close_file_unwind, ofd_locative);
|
|
|
1772
|
|
|
1773 while ((n = read_allowing_quit (ifd, buf, sizeof (buf))) > 0)
|
|
|
1774 {
|
|
|
1775 if (write_allowing_quit (ofd, buf, n) != n)
|
|
|
1776 report_file_error ("I/O error", list1 (newname));
|
|
|
1777 }
|
|
|
1778
|
|
|
1779 /* Closing the output clobbers the file times on some systems. */
|
|
|
1780 if (close (ofd) < 0)
|
|
227
|
1781 report_file_error ("I/O error", list1 (newname));
|
|
0
|
1782
|
|
|
1783 if (input_file_statable_p)
|
|
|
1784 {
|
|
74
|
1785 if (!NILP (keep_time))
|
|
0
|
1786 {
|
|
|
1787 EMACS_TIME atime, mtime;
|
|
|
1788 EMACS_SET_SECS_USECS (atime, st.st_atime, 0);
|
|
|
1789 EMACS_SET_SECS_USECS (mtime, st.st_mtime, 0);
|
|
16
|
1790 if (set_file_times ((char *) XSTRING_DATA (newname), atime,
|
|
0
|
1791 mtime))
|
|
227
|
1792 report_file_error ("I/O error", list1 (newname));
|
|
0
|
1793 }
|
|
398
|
1794 chmod ((const char *) XSTRING_DATA (newname),
|
|
0
|
1795 st.st_mode & 07777);
|
|
|
1796 }
|
|
|
1797
|
|
|
1798 /* We'll close it by hand */
|
|
|
1799 XCAR (ofd_locative) = Qnil;
|
|
|
1800
|
|
|
1801 /* Close ifd */
|
|
|
1802 unbind_to (speccount, Qnil);
|
|
|
1803 }
|
|
|
1804
|
|
|
1805 UNGCPRO;
|
|
|
1806 return Qnil;
|
|
|
1807 }
|
|
|
1808
|
|
20
|
1809 DEFUN ("make-directory-internal", Fmake_directory_internal, 1, 1, 0, /*
|
|
0
|
1810 Create a directory. One argument, a file name string.
|
|
20
|
1811 */
|
|
173
|
1812 (dirname_))
|
|
0
|
1813 {
|
|
120
|
1814 /* This function can GC. GC checked 1997.04.06. */
|
|
0
|
1815 char dir [MAXPATHLEN];
|
|
|
1816 Lisp_Object handler;
|
|
|
1817 struct gcpro gcpro1;
|
|
151
|
1818
|
|
173
|
1819 CHECK_STRING (dirname_);
|
|
|
1820 dirname_ = Fexpand_file_name (dirname_, Qnil);
|
|
|
1821
|
|
|
1822 GCPRO1 (dirname_);
|
|
|
1823 handler = Ffind_file_name_handler (dirname_, Qmake_directory_internal);
|
|
0
|
1824 UNGCPRO;
|
|
|
1825 if (!NILP (handler))
|
|
173
|
1826 return (call2 (handler, Qmake_directory_internal, dirname_));
|
|
|
1827
|
|
272
|
1828 if (XSTRING_LENGTH (dirname_) > (Bytecount) (sizeof (dir) - 1))
|
|
0
|
1829 {
|
|
|
1830 return Fsignal (Qfile_error,
|
|
|
1831 list3 (build_translated_string ("Creating directory"),
|
|
404
|
1832 build_translated_string ("pathname too long"),
|
|
173
|
1833 dirname_));
|
|
0
|
1834 }
|
|
173
|
1835 strncpy (dir, (char *) XSTRING_DATA (dirname_),
|
|
|
1836 XSTRING_LENGTH (dirname_) + 1);
|
|
0
|
1837
|
|
173
|
1838 if (dir [XSTRING_LENGTH (dirname_) - 1] == '/')
|
|
|
1839 dir [XSTRING_LENGTH (dirname_) - 1] = 0;
|
|
0
|
1840
|
|
|
1841 if (mkdir (dir, 0777) != 0)
|
|
173
|
1842 report_file_error ("Creating directory", list1 (dirname_));
|
|
0
|
1843
|
|
|
1844 return Qnil;
|
|
|
1845 }
|
|
|
1846
|
|
20
|
1847 DEFUN ("delete-directory", Fdelete_directory, 1, 1, "FDelete directory: ", /*
|
|
0
|
1848 Delete a directory. One argument, a file name or directory name string.
|
|
20
|
1849 */
|
|
173
|
1850 (dirname_))
|
|
0
|
1851 {
|
|
120
|
1852 /* This function can GC. GC checked 1997.04.06. */
|
|
0
|
1853 Lisp_Object handler;
|
|
|
1854 struct gcpro gcpro1;
|
|
151
|
1855
|
|
173
|
1856 CHECK_STRING (dirname_);
|
|
|
1857
|
|
|
1858 GCPRO1 (dirname_);
|
|
|
1859 dirname_ = Fexpand_file_name (dirname_, Qnil);
|
|
|
1860 dirname_ = Fdirectory_file_name (dirname_);
|
|
|
1861
|
|
|
1862 handler = Ffind_file_name_handler (dirname_, Qdelete_directory);
|
|
0
|
1863 UNGCPRO;
|
|
|
1864 if (!NILP (handler))
|
|
173
|
1865 return (call2 (handler, Qdelete_directory, dirname_));
|
|
|
1866
|
|
|
1867 if (rmdir ((char *) XSTRING_DATA (dirname_)) != 0)
|
|
|
1868 report_file_error ("Removing directory", list1 (dirname_));
|
|
0
|
1869
|
|
|
1870 return Qnil;
|
|
|
1871 }
|
|
|
1872
|
|
20
|
1873 DEFUN ("delete-file", Fdelete_file, 1, 1, "fDelete file: ", /*
|
|
400
|
1874 Delete the file named FILENAME (a string).
|
|
|
1875 If FILENAME has multiple names, it continues to exist with the other names.
|
|
20
|
1876 */
|
|
|
1877 (filename))
|
|
0
|
1878 {
|
|
120
|
1879 /* This function can GC. GC checked 1997.04.06. */
|
|
0
|
1880 Lisp_Object handler;
|
|
|
1881 struct gcpro gcpro1;
|
|
151
|
1882
|
|
0
|
1883 CHECK_STRING (filename);
|
|
|
1884 filename = Fexpand_file_name (filename, Qnil);
|
|
|
1885
|
|
114
|
1886 GCPRO1 (filename);
|
|
0
|
1887 handler = Ffind_file_name_handler (filename, Qdelete_file);
|
|
|
1888 UNGCPRO;
|
|
|
1889 if (!NILP (handler))
|
|
|
1890 return call2 (handler, Qdelete_file, filename);
|
|
|
1891
|
|
16
|
1892 if (0 > unlink ((char *) XSTRING_DATA (filename)))
|
|
0
|
1893 report_file_error ("Removing old name", list1 (filename));
|
|
|
1894 return Qnil;
|
|
|
1895 }
|
|
|
1896
|
|
|
1897 static Lisp_Object
|
|
|
1898 internal_delete_file_1 (Lisp_Object ignore, Lisp_Object ignore2)
|
|
|
1899 {
|
|
|
1900 return Qt;
|
|
|
1901 }
|
|
|
1902
|
|
|
1903 /* Delete file FILENAME, returning 1 if successful and 0 if failed. */
|
|
|
1904
|
|
|
1905 int
|
|
|
1906 internal_delete_file (Lisp_Object filename)
|
|
|
1907 {
|
|
120
|
1908 /* This function can GC. GC checked 1997.04.06. */
|
|
0
|
1909 return NILP (condition_case_1 (Qt, Fdelete_file, filename,
|
|
|
1910 internal_delete_file_1, Qnil));
|
|
|
1911 }
|
|
|
1912
|
|
20
|
1913 DEFUN ("rename-file", Frename_file, 2, 3,
|
|
|
1914 "fRename file: \nFRename %s to file: \np", /*
|
|
0
|
1915 Rename FILE as NEWNAME. Both args strings.
|
|
|
1916 If file has names other than FILE, it continues to have those names.
|
|
|
1917 Signals a `file-already-exists' error if a file NEWNAME already exists
|
|
|
1918 unless optional third argument OK-IF-ALREADY-EXISTS is non-nil.
|
|
|
1919 A number as third arg means request confirmation if NEWNAME already exists.
|
|
|
1920 This is what happens in interactive use with M-x.
|
|
20
|
1921 */
|
|
|
1922 (filename, newname, ok_if_already_exists))
|
|
0
|
1923 {
|
|
120
|
1924 /* This function can GC. GC checked 1997.04.06. */
|
|
0
|
1925 Lisp_Object handler;
|
|
|
1926 struct gcpro gcpro1, gcpro2;
|
|
|
1927
|
|
|
1928 GCPRO2 (filename, newname);
|
|
|
1929 CHECK_STRING (filename);
|
|
|
1930 CHECK_STRING (newname);
|
|
|
1931 filename = Fexpand_file_name (filename, Qnil);
|
|
|
1932 newname = Fexpand_file_name (newname, Qnil);
|
|
|
1933
|
|
|
1934 /* If the file name has special constructs in it,
|
|
|
1935 call the corresponding file handler. */
|
|
|
1936 handler = Ffind_file_name_handler (filename, Qrename_file);
|
|
|
1937 if (NILP (handler))
|
|
|
1938 handler = Ffind_file_name_handler (newname, Qrename_file);
|
|
|
1939 if (!NILP (handler))
|
|
|
1940 {
|
|
|
1941 UNGCPRO;
|
|
|
1942 return call4 (handler, Qrename_file,
|
|
|
1943 filename, newname, ok_if_already_exists);
|
|
|
1944 }
|
|
|
1945
|
|
|
1946 /* When second argument is a directory, rename the file into it.
|
|
|
1947 (rename-file "foo" "bar/") == (rename-file "foo" "bar/foo")
|
|
|
1948 */
|
|
|
1949 if (!NILP (Ffile_directory_p (newname)))
|
|
|
1950 {
|
|
|
1951 Lisp_Object args[3];
|
|
|
1952 struct gcpro ngcpro1;
|
|
|
1953 int i = 1;
|
|
|
1954
|
|
151
|
1955 args[0] = newname;
|
|
0
|
1956 args[1] = Qnil; args[2] = Qnil;
|
|
151
|
1957 NGCPRO1 (*args);
|
|
0
|
1958 ngcpro1.nvars = 3;
|
|
16
|
1959 if (XSTRING_BYTE (newname, XSTRING_LENGTH (newname) - 1) != '/')
|
|
0
|
1960 args[i++] = build_string ("/");
|
|
|
1961 args[i++] = Ffile_name_nondirectory (filename);
|
|
|
1962 newname = Fconcat (i, args);
|
|
|
1963 NUNGCPRO;
|
|
|
1964 }
|
|
|
1965
|
|
|
1966 if (NILP (ok_if_already_exists)
|
|
|
1967 || INTP (ok_if_already_exists))
|
|
|
1968 barf_or_query_if_file_exists (newname, "rename to it",
|
|
|
1969 INTP (ok_if_already_exists), 0);
|
|
|
1970
|
|
211
|
1971 /* Syncing with FSF 19.34.6 note: FSF does not have conditional code for
|
|
410
|
1972 WIN32_NATIVE here; I've removed it. --marcpa */
|
|
|
1973
|
|
|
1974 /* We have configure check for rename() and emulate using
|
|
|
1975 link()/unlink() if necessary. */
|
|
16
|
1976 if (0 > rename ((char *) XSTRING_DATA (filename),
|
|
|
1977 (char *) XSTRING_DATA (newname)))
|
|
0
|
1978 {
|
|
|
1979 if (errno == EXDEV)
|
|
|
1980 {
|
|
|
1981 Fcopy_file (filename, newname,
|
|
|
1982 /* We have already prompted if it was an integer,
|
|
|
1983 so don't have copy-file prompt again. */
|
|
398
|
1984 (NILP (ok_if_already_exists) ? Qnil : Qt),
|
|
0
|
1985 Qt);
|
|
|
1986 Fdelete_file (filename);
|
|
|
1987 }
|
|
|
1988 else
|
|
|
1989 {
|
|
|
1990 report_file_error ("Renaming", list2 (filename, newname));
|
|
|
1991 }
|
|
|
1992 }
|
|
|
1993 UNGCPRO;
|
|
|
1994 return Qnil;
|
|
|
1995 }
|
|
|
1996
|
|
20
|
1997 DEFUN ("add-name-to-file", Fadd_name_to_file, 2, 3,
|
|
|
1998 "fAdd name to file: \nFName to add to %s: \np", /*
|
|
0
|
1999 Give FILE additional name NEWNAME. Both args strings.
|
|
|
2000 Signals a `file-already-exists' error if a file NEWNAME already exists
|
|
|
2001 unless optional third argument OK-IF-ALREADY-EXISTS is non-nil.
|
|
|
2002 A number as third arg means request confirmation if NEWNAME already exists.
|
|
|
2003 This is what happens in interactive use with M-x.
|
|
20
|
2004 */
|
|
|
2005 (filename, newname, ok_if_already_exists))
|
|
0
|
2006 {
|
|
120
|
2007 /* This function can GC. GC checked 1997.04.06. */
|
|
0
|
2008 Lisp_Object handler;
|
|
|
2009 struct gcpro gcpro1, gcpro2;
|
|
|
2010
|
|
|
2011 GCPRO2 (filename, newname);
|
|
|
2012 CHECK_STRING (filename);
|
|
|
2013 CHECK_STRING (newname);
|
|
|
2014 filename = Fexpand_file_name (filename, Qnil);
|
|
|
2015 newname = Fexpand_file_name (newname, Qnil);
|
|
|
2016
|
|
|
2017 /* If the file name has special constructs in it,
|
|
|
2018 call the corresponding file handler. */
|
|
|
2019 handler = Ffind_file_name_handler (filename, Qadd_name_to_file);
|
|
|
2020 if (!NILP (handler))
|
|
|
2021 RETURN_UNGCPRO (call4 (handler, Qadd_name_to_file, filename,
|
|
|
2022 newname, ok_if_already_exists));
|
|
|
2023
|
|
|
2024 /* If the new name has special constructs in it,
|
|
|
2025 call the corresponding file handler. */
|
|
|
2026 handler = Ffind_file_name_handler (newname, Qadd_name_to_file);
|
|
|
2027 if (!NILP (handler))
|
|
|
2028 RETURN_UNGCPRO (call4 (handler, Qadd_name_to_file, filename,
|
|
|
2029 newname, ok_if_already_exists));
|
|
|
2030
|
|
|
2031 if (NILP (ok_if_already_exists)
|
|
|
2032 || INTP (ok_if_already_exists))
|
|
|
2033 barf_or_query_if_file_exists (newname, "make it a new name",
|
|
|
2034 INTP (ok_if_already_exists), 0);
|
|
211
|
2035 /* Syncing with FSF 19.34.6 note: FSF does not report a file error
|
|
|
2036 on NT here. --marcpa */
|
|
213
|
2037 /* But FSF #defines link as sys_link which is supplied in nt.c. We can't do
|
|
|
2038 that because sysfile.h defines sys_link depending on ENCAPSULATE_LINK.
|
|
380
|
2039 Reverted to previous behavior pending a working fix. (jhar) */
|
|
410
|
2040 #if defined(WIN32_NATIVE)
|
|
0
|
2041 /* Windows does not support this operation. */
|
|
|
2042 report_file_error ("Adding new name", Flist (2, &filename));
|
|
410
|
2043 #else /* not defined(WIN32_NATIVE) */
|
|
0
|
2044
|
|
16
|
2045 unlink ((char *) XSTRING_DATA (newname));
|
|
|
2046 if (0 > link ((char *) XSTRING_DATA (filename),
|
|
|
2047 (char *) XSTRING_DATA (newname)))
|
|
0
|
2048 {
|
|
|
2049 report_file_error ("Adding new name",
|
|
|
2050 list2 (filename, newname));
|
|
|
2051 }
|
|
410
|
2052 #endif /* defined(WIN32_NATIVE) */
|
|
0
|
2053
|
|
|
2054 UNGCPRO;
|
|
|
2055 return Qnil;
|
|
|
2056 }
|
|
|
2057
|
|
20
|
2058 DEFUN ("make-symbolic-link", Fmake_symbolic_link, 2, 3,
|
|
|
2059 "FMake symbolic link to file: \nFMake symbolic link to file %s: \np", /*
|
|
0
|
2060 Make a symbolic link to FILENAME, named LINKNAME. Both args strings.
|
|
|
2061 Signals a `file-already-exists' error if a file LINKNAME already exists
|
|
|
2062 unless optional third argument OK-IF-ALREADY-EXISTS is non-nil.
|
|
|
2063 A number as third arg means request confirmation if LINKNAME already exists.
|
|
|
2064 This happens for interactive use with M-x.
|
|
20
|
2065 */
|
|
|
2066 (filename, linkname, ok_if_already_exists))
|
|
0
|
2067 {
|
|
120
|
2068 /* This function can GC. GC checked 1997.06.04. */
|
|
404
|
2069 /* XEmacs change: run handlers even if local machine doesn't have symlinks */
|
|
0
|
2070 Lisp_Object handler;
|
|
|
2071 struct gcpro gcpro1, gcpro2;
|
|
|
2072
|
|
|
2073 GCPRO2 (filename, linkname);
|
|
|
2074 CHECK_STRING (filename);
|
|
|
2075 CHECK_STRING (linkname);
|
|
|
2076 /* If the link target has a ~, we must expand it to get
|
|
|
2077 a truly valid file name. Otherwise, do not expand;
|
|
|
2078 we want to permit links to relative file names. */
|
|
211
|
2079 if (XSTRING_BYTE (filename, 0) == '~')
|
|
0
|
2080 filename = Fexpand_file_name (filename, Qnil);
|
|
|
2081 linkname = Fexpand_file_name (linkname, Qnil);
|
|
|
2082
|
|
|
2083 /* If the file name has special constructs in it,
|
|
|
2084 call the corresponding file handler. */
|
|
|
2085 handler = Ffind_file_name_handler (filename, Qmake_symbolic_link);
|
|
|
2086 if (!NILP (handler))
|
|
|
2087 RETURN_UNGCPRO (call4 (handler, Qmake_symbolic_link, filename, linkname,
|
|
|
2088 ok_if_already_exists));
|
|
|
2089
|
|
|
2090 /* If the new link name has special constructs in it,
|
|
|
2091 call the corresponding file handler. */
|
|
|
2092 handler = Ffind_file_name_handler (linkname, Qmake_symbolic_link);
|
|
|
2093 if (!NILP (handler))
|
|
|
2094 RETURN_UNGCPRO (call4 (handler, Qmake_symbolic_link, filename,
|
|
|
2095 linkname, ok_if_already_exists));
|
|
|
2096
|
|
404
|
2097 #ifdef S_IFLNK
|
|
0
|
2098 if (NILP (ok_if_already_exists)
|
|
|
2099 || INTP (ok_if_already_exists))
|
|
|
2100 barf_or_query_if_file_exists (linkname, "make it a link",
|
|
|
2101 INTP (ok_if_already_exists), 0);
|
|
|
2102
|
|
16
|
2103 unlink ((char *) XSTRING_DATA (linkname));
|
|
|
2104 if (0 > symlink ((char *) XSTRING_DATA (filename),
|
|
|
2105 (char *) XSTRING_DATA (linkname)))
|
|
0
|
2106 {
|
|
|
2107 report_file_error ("Making symbolic link",
|
|
|
2108 list2 (filename, linkname));
|
|
|
2109 }
|
|
404
|
2110 #endif /* S_IFLNK */
|
|
|
2111
|
|
0
|
2112 UNGCPRO;
|
|
|
2113 return Qnil;
|
|
|
2114 }
|
|
|
2115
|
|
|
2116 #ifdef HPUX_NET
|
|
|
2117
|
|
20
|
2118 DEFUN ("sysnetunam", Fsysnetunam, 2, 2, 0, /*
|
|
0
|
2119 Open a network connection to PATH using LOGIN as the login string.
|
|
20
|
2120 */
|
|
|
2121 (path, login))
|
|
0
|
2122 {
|
|
|
2123 int netresult;
|
|
398
|
2124 const char *path_ext;
|
|
|
2125 const char *login_ext;
|
|
151
|
2126
|
|
0
|
2127 CHECK_STRING (path);
|
|
151
|
2128 CHECK_STRING (login);
|
|
0
|
2129
|
|
|
2130 /* netunam, being a strange-o system call only used once, is not
|
|
|
2131 encapsulated. */
|
|
398
|
2132
|
|
|
2133 TO_EXTERNAL_FORMAT (LISP_STRING, path, C_STRING_ALLOCA, path_ext, Qfile_name);
|
|
|
2134 TO_EXTERNAL_FORMAT (LISP_STRING, login, C_STRING_ALLOCA, login_ext, Qnative);
|
|
|
2135
|
|
|
2136 netresult = netunam (path_ext, login_ext);
|
|
|
2137
|
|
|
2138 return netresult == -1 ? Qnil : Qt;
|
|
0
|
2139 }
|
|
|
2140 #endif /* HPUX_NET */
|
|
|
2141
|
|
20
|
2142 DEFUN ("file-name-absolute-p", Ffile_name_absolute_p, 1, 1, 0, /*
|
|
0
|
2143 Return t if file FILENAME specifies an absolute path name.
|
|
|
2144 On Unix, this is a name starting with a `/' or a `~'.
|
|
20
|
2145 */
|
|
|
2146 (filename))
|
|
0
|
2147 {
|
|
116
|
2148 /* This function does not GC */
|
|
0
|
2149 Bufbyte *ptr;
|
|
|
2150
|
|
|
2151 CHECK_STRING (filename);
|
|
16
|
2152 ptr = XSTRING_DATA (filename);
|
|
272
|
2153 return (IS_DIRECTORY_SEP (*ptr) || *ptr == '~'
|
|
410
|
2154 #ifdef WIN32_NATIVE
|
|
272
|
2155 || (IS_DRIVE (*ptr) && ptr[1] == ':' && IS_DIRECTORY_SEP (ptr[2]))
|
|
0
|
2156 #endif
|
|
272
|
2157 ) ? Qt : Qnil;
|
|
0
|
2158 }
|
|
|
2159
|
|
|
2160 /* Return nonzero if file FILENAME exists and can be executed. */
|
|
|
2161
|
|
|
2162 static int
|
|
|
2163 check_executable (char *filename)
|
|
|
2164 {
|
|
410
|
2165 #ifdef WIN32_NATIVE
|
|
0
|
2166 struct stat st;
|
|
|
2167 if (stat (filename, &st) < 0)
|
|
|
2168 return 0;
|
|
211
|
2169 return ((st.st_mode & S_IEXEC) != 0);
|
|
410
|
2170 #else /* not WIN32_NATIVE */
|
|
0
|
2171 #ifdef HAVE_EACCESS
|
|
183
|
2172 return eaccess (filename, 1) >= 0;
|
|
0
|
2173 #else
|
|
|
2174 /* Access isn't quite right because it uses the real uid
|
|
|
2175 and we really want to test with the effective uid.
|
|
|
2176 But Unix doesn't give us a right way to do it. */
|
|
183
|
2177 return access (filename, 1) >= 0;
|
|
|
2178 #endif /* HAVE_EACCESS */
|
|
410
|
2179 #endif /* not WIN32_NATIVE */
|
|
0
|
2180 }
|
|
|
2181
|
|
|
2182 /* Return nonzero if file FILENAME exists and can be written. */
|
|
|
2183
|
|
|
2184 static int
|
|
398
|
2185 check_writable (const char *filename)
|
|
0
|
2186 {
|
|
|
2187 #ifdef HAVE_EACCESS
|
|
|
2188 return (eaccess (filename, 2) >= 0);
|
|
|
2189 #else
|
|
|
2190 /* Access isn't quite right because it uses the real uid
|
|
|
2191 and we really want to test with the effective uid.
|
|
|
2192 But Unix doesn't give us a right way to do it.
|
|
|
2193 Opening with O_WRONLY could work for an ordinary file,
|
|
|
2194 but would lose for directories. */
|
|
|
2195 return (access (filename, 2) >= 0);
|
|
|
2196 #endif
|
|
|
2197 }
|
|
|
2198
|
|
20
|
2199 DEFUN ("file-exists-p", Ffile_exists_p, 1, 1, 0, /*
|
|
0
|
2200 Return t if file FILENAME exists. (This does not mean you can read it.)
|
|
|
2201 See also `file-readable-p' and `file-attributes'.
|
|
20
|
2202 */
|
|
|
2203 (filename))
|
|
0
|
2204 {
|
|
371
|
2205 /* This function can call lisp */
|
|
0
|
2206 Lisp_Object abspath;
|
|
|
2207 Lisp_Object handler;
|
|
|
2208 struct stat statbuf;
|
|
|
2209 struct gcpro gcpro1;
|
|
151
|
2210
|
|
0
|
2211 CHECK_STRING (filename);
|
|
|
2212 abspath = Fexpand_file_name (filename, Qnil);
|
|
|
2213
|
|
|
2214 /* If the file name has special constructs in it,
|
|
|
2215 call the corresponding file handler. */
|
|
|
2216 GCPRO1 (abspath);
|
|
|
2217 handler = Ffind_file_name_handler (abspath, Qfile_exists_p);
|
|
|
2218 UNGCPRO;
|
|
|
2219 if (!NILP (handler))
|
|
|
2220 return call2 (handler, Qfile_exists_p, abspath);
|
|
|
2221
|
|
272
|
2222 return stat ((char *) XSTRING_DATA (abspath), &statbuf) >= 0 ? Qt : Qnil;
|
|
0
|
2223 }
|
|
|
2224
|
|
20
|
2225 DEFUN ("file-executable-p", Ffile_executable_p, 1, 1, 0, /*
|
|
0
|
2226 Return t if FILENAME can be executed by you.
|
|
|
2227 For a directory, this means you can access files in that directory.
|
|
20
|
2228 */
|
|
|
2229 (filename))
|
|
70
|
2230
|
|
0
|
2231 {
|
|
371
|
2232 /* This function can GC. GC checked 1997.04.10. */
|
|
0
|
2233 Lisp_Object abspath;
|
|
|
2234 Lisp_Object handler;
|
|
|
2235 struct gcpro gcpro1;
|
|
151
|
2236
|
|
0
|
2237 CHECK_STRING (filename);
|
|
|
2238 abspath = Fexpand_file_name (filename, Qnil);
|
|
|
2239
|
|
|
2240 /* If the file name has special constructs in it,
|
|
|
2241 call the corresponding file handler. */
|
|
|
2242 GCPRO1 (abspath);
|
|
|
2243 handler = Ffind_file_name_handler (abspath, Qfile_executable_p);
|
|
|
2244 UNGCPRO;
|
|
|
2245 if (!NILP (handler))
|
|
|
2246 return call2 (handler, Qfile_executable_p, abspath);
|
|
|
2247
|
|
272
|
2248 return check_executable ((char *) XSTRING_DATA (abspath)) ? Qt : Qnil;
|
|
0
|
2249 }
|
|
|
2250
|
|
20
|
2251 DEFUN ("file-readable-p", Ffile_readable_p, 1, 1, 0, /*
|
|
0
|
2252 Return t if file FILENAME exists and you can read it.
|
|
|
2253 See also `file-exists-p' and `file-attributes'.
|
|
20
|
2254 */
|
|
|
2255 (filename))
|
|
0
|
2256 {
|
|
225
|
2257 /* This function can GC */
|
|
|
2258 Lisp_Object abspath = Qnil;
|
|
0
|
2259 Lisp_Object handler;
|
|
|
2260 struct gcpro gcpro1;
|
|
225
|
2261 GCPRO1 (abspath);
|
|
151
|
2262
|
|
0
|
2263 CHECK_STRING (filename);
|
|
|
2264 abspath = Fexpand_file_name (filename, Qnil);
|
|
|
2265
|
|
|
2266 /* If the file name has special constructs in it,
|
|
|
2267 call the corresponding file handler. */
|
|
|
2268 handler = Ffind_file_name_handler (abspath, Qfile_readable_p);
|
|
|
2269 if (!NILP (handler))
|
|
225
|
2270 RETURN_UNGCPRO (call2 (handler, Qfile_readable_p, abspath));
|
|
0
|
2271
|
|
410
|
2272 #if defined(WIN32_NATIVE) || defined(CYGWIN)
|
|
211
|
2273 /* Under MS-DOS and Windows, open does not work for directories. */
|
|
267
|
2274 UNGCPRO;
|
|
211
|
2275 if (access (XSTRING_DATA (abspath), 0) == 0)
|
|
|
2276 return Qt;
|
|
267
|
2277 else
|
|
|
2278 return Qnil;
|
|
410
|
2279 #else /* not WIN32_NATIVE */
|
|
265
|
2280 {
|
|
|
2281 int desc = interruptible_open ((char *) XSTRING_DATA (abspath), O_RDONLY | OPEN_BINARY, 0);
|
|
|
2282 UNGCPRO;
|
|
|
2283 if (desc < 0)
|
|
|
2284 return Qnil;
|
|
|
2285 close (desc);
|
|
|
2286 return Qt;
|
|
|
2287 }
|
|
410
|
2288 #endif /* not WIN32_NATIVE */
|
|
0
|
2289 }
|
|
|
2290
|
|
|
2291 /* Having this before file-symlink-p mysteriously caused it to be forgotten
|
|
|
2292 on the RT/PC. */
|
|
20
|
2293 DEFUN ("file-writable-p", Ffile_writable_p, 1, 1, 0, /*
|
|
0
|
2294 Return t if file FILENAME can be written or created by you.
|
|
20
|
2295 */
|
|
|
2296 (filename))
|
|
0
|
2297 {
|
|
124
|
2298 /* This function can GC. GC checked 1997.04.10. */
|
|
0
|
2299 Lisp_Object abspath, dir;
|
|
|
2300 Lisp_Object handler;
|
|
|
2301 struct stat statbuf;
|
|
|
2302 struct gcpro gcpro1;
|
|
151
|
2303
|
|
0
|
2304 CHECK_STRING (filename);
|
|
|
2305 abspath = Fexpand_file_name (filename, Qnil);
|
|
|
2306
|
|
|
2307 /* If the file name has special constructs in it,
|
|
|
2308 call the corresponding file handler. */
|
|
|
2309 GCPRO1 (abspath);
|
|
|
2310 handler = Ffind_file_name_handler (abspath, Qfile_writable_p);
|
|
|
2311 UNGCPRO;
|
|
|
2312 if (!NILP (handler))
|
|
|
2313 return call2 (handler, Qfile_writable_p, abspath);
|
|
|
2314
|
|
16
|
2315 if (stat ((char *) XSTRING_DATA (abspath), &statbuf) >= 0)
|
|
|
2316 return (check_writable ((char *) XSTRING_DATA (abspath))
|
|
0
|
2317 ? Qt : Qnil);
|
|
|
2318
|
|
|
2319
|
|
114
|
2320 GCPRO1 (abspath);
|
|
0
|
2321 dir = Ffile_name_directory (abspath);
|
|
114
|
2322 UNGCPRO;
|
|
16
|
2323 return (check_writable (!NILP (dir) ? (char *) XSTRING_DATA (dir)
|
|
0
|
2324 : "")
|
|
|
2325 ? Qt : Qnil);
|
|
|
2326 }
|
|
|
2327
|
|
20
|
2328 DEFUN ("file-symlink-p", Ffile_symlink_p, 1, 1, 0, /*
|
|
0
|
2329 Return non-nil if file FILENAME is the name of a symbolic link.
|
|
|
2330 The value is the name of the file to which it is linked.
|
|
|
2331 Otherwise returns nil.
|
|
20
|
2332 */
|
|
|
2333 (filename))
|
|
0
|
2334 {
|
|
124
|
2335 /* This function can GC. GC checked 1997.04.10. */
|
|
404
|
2336 /* XEmacs change: run handlers even if local machine doesn't have symlinks */
|
|
0
|
2337 #ifdef S_IFLNK
|
|
|
2338 char *buf;
|
|
|
2339 int bufsize;
|
|
|
2340 int valsize;
|
|
|
2341 Lisp_Object val;
|
|
404
|
2342 #endif
|
|
0
|
2343 Lisp_Object handler;
|
|
|
2344 struct gcpro gcpro1;
|
|
151
|
2345
|
|
0
|
2346 CHECK_STRING (filename);
|
|
|
2347 filename = Fexpand_file_name (filename, Qnil);
|
|
|
2348
|
|
|
2349 /* If the file name has special constructs in it,
|
|
|
2350 call the corresponding file handler. */
|
|
116
|
2351 GCPRO1 (filename);
|
|
0
|
2352 handler = Ffind_file_name_handler (filename, Qfile_symlink_p);
|
|
116
|
2353 UNGCPRO;
|
|
0
|
2354 if (!NILP (handler))
|
|
|
2355 return call2 (handler, Qfile_symlink_p, filename);
|
|
|
2356
|
|
404
|
2357 #ifdef S_IFLNK
|
|
0
|
2358 bufsize = 100;
|
|
|
2359 while (1)
|
|
|
2360 {
|
|
185
|
2361 buf = xnew_array_and_zero (char, bufsize);
|
|
16
|
2362 valsize = readlink ((char *) XSTRING_DATA (filename),
|
|
0
|
2363 buf, bufsize);
|
|
|
2364 if (valsize < bufsize) break;
|
|
|
2365 /* Buffer was not long enough */
|
|
|
2366 xfree (buf);
|
|
|
2367 bufsize *= 2;
|
|
|
2368 }
|
|
|
2369 if (valsize == -1)
|
|
|
2370 {
|
|
|
2371 xfree (buf);
|
|
|
2372 return Qnil;
|
|
|
2373 }
|
|
|
2374 val = make_string ((Bufbyte *) buf, valsize);
|
|
|
2375 xfree (buf);
|
|
|
2376 return val;
|
|
|
2377 #else /* not S_IFLNK */
|
|
|
2378 return Qnil;
|
|
|
2379 #endif /* not S_IFLNK */
|
|
|
2380 }
|
|
|
2381
|
|
20
|
2382 DEFUN ("file-directory-p", Ffile_directory_p, 1, 1, 0, /*
|
|
0
|
2383 Return t if file FILENAME is the name of a directory as a file.
|
|
|
2384 A directory name spec may be given instead; then the value is t
|
|
|
2385 if the directory so specified exists and really is a directory.
|
|
20
|
2386 */
|
|
|
2387 (filename))
|
|
0
|
2388 {
|
|
124
|
2389 /* This function can GC. GC checked 1997.04.10. */
|
|
0
|
2390 Lisp_Object abspath;
|
|
|
2391 struct stat st;
|
|
|
2392 Lisp_Object handler;
|
|
|
2393 struct gcpro gcpro1;
|
|
151
|
2394
|
|
114
|
2395 GCPRO1 (current_buffer->directory);
|
|
0
|
2396 abspath = expand_and_dir_to_file (filename,
|
|
|
2397 current_buffer->directory);
|
|
|
2398 UNGCPRO;
|
|
|
2399
|
|
|
2400 /* If the file name has special constructs in it,
|
|
|
2401 call the corresponding file handler. */
|
|
|
2402 GCPRO1 (abspath);
|
|
|
2403 handler = Ffind_file_name_handler (abspath, Qfile_directory_p);
|
|
|
2404 UNGCPRO;
|
|
|
2405 if (!NILP (handler))
|
|
|
2406 return call2 (handler, Qfile_directory_p, abspath);
|
|
|
2407
|
|
16
|
2408 if (stat ((char *) XSTRING_DATA (abspath), &st) < 0)
|
|
0
|
2409 return Qnil;
|
|
|
2410 return (st.st_mode & S_IFMT) == S_IFDIR ? Qt : Qnil;
|
|
|
2411 }
|
|
|
2412
|
|
20
|
2413 DEFUN ("file-accessible-directory-p", Ffile_accessible_directory_p, 1, 1, 0, /*
|
|
0
|
2414 Return t if file FILENAME is the name of a directory as a file,
|
|
|
2415 and files in that directory can be opened by you. In order to use a
|
|
|
2416 directory as a buffer's current directory, this predicate must return true.
|
|
|
2417 A directory name spec may be given instead; then the value is t
|
|
|
2418 if the directory so specified exists and really is a readable and
|
|
|
2419 searchable directory.
|
|
20
|
2420 */
|
|
|
2421 (filename))
|
|
0
|
2422 {
|
|
124
|
2423 /* This function can GC. GC checked 1997.04.10. */
|
|
0
|
2424 Lisp_Object handler;
|
|
|
2425
|
|
|
2426 /* If the file name has special constructs in it,
|
|
|
2427 call the corresponding file handler. */
|
|
|
2428 handler = Ffind_file_name_handler (filename, Qfile_accessible_directory_p);
|
|
|
2429 if (!NILP (handler))
|
|
|
2430 return call2 (handler, Qfile_accessible_directory_p,
|
|
|
2431 filename);
|
|
|
2432
|
|
410
|
2433 #if !defined(WIN32_NATIVE)
|
|
0
|
2434 if (NILP (Ffile_directory_p (filename)))
|
|
|
2435 return (Qnil);
|
|
116
|
2436 else
|
|
|
2437 return Ffile_executable_p (filename);
|
|
211
|
2438 #else
|
|
|
2439 {
|
|
|
2440 int tem;
|
|
|
2441 struct gcpro gcpro1;
|
|
|
2442 /* It's an unlikely combination, but yes we really do need to gcpro:
|
|
|
2443 Suppose that file-accessible-directory-p has no handler, but
|
|
|
2444 file-directory-p does have a handler; this handler causes a GC which
|
|
|
2445 relocates the string in `filename'; and finally file-directory-p
|
|
|
2446 returns non-nil. Then we would end up passing a garbaged string
|
|
|
2447 to file-executable-p. */
|
|
|
2448 GCPRO1 (filename);
|
|
|
2449 tem = (NILP (Ffile_directory_p (filename))
|
|
|
2450 || NILP (Ffile_executable_p (filename)));
|
|
|
2451 UNGCPRO;
|
|
|
2452 return tem ? Qnil : Qt;
|
|
|
2453 }
|
|
410
|
2454 #endif /* !defined(WIN32_NATIVE) */
|
|
0
|
2455 }
|
|
|
2456
|
|
20
|
2457 DEFUN ("file-regular-p", Ffile_regular_p, 1, 1, 0, /*
|
|
284
|
2458 Return t if file FILENAME is the name of a regular file.
|
|
0
|
2459 This is the sort of file that holds an ordinary stream of data bytes.
|
|
20
|
2460 */
|
|
|
2461 (filename))
|
|
0
|
2462 {
|
|
124
|
2463 /* This function can GC. GC checked 1997.04.10. */
|
|
114
|
2464 Lisp_Object abspath;
|
|
0
|
2465 struct stat st;
|
|
|
2466 Lisp_Object handler;
|
|
114
|
2467 struct gcpro gcpro1;
|
|
|
2468
|
|
|
2469 GCPRO1 (current_buffer->directory);
|
|
0
|
2470 abspath = expand_and_dir_to_file (filename, current_buffer->directory);
|
|
114
|
2471 UNGCPRO;
|
|
0
|
2472
|
|
|
2473 /* If the file name has special constructs in it,
|
|
|
2474 call the corresponding file handler. */
|
|
114
|
2475 GCPRO1 (abspath);
|
|
0
|
2476 handler = Ffind_file_name_handler (abspath, Qfile_regular_p);
|
|
114
|
2477 UNGCPRO;
|
|
0
|
2478 if (!NILP (handler))
|
|
|
2479 return call2 (handler, Qfile_regular_p, abspath);
|
|
|
2480
|
|
16
|
2481 if (stat ((char *) XSTRING_DATA (abspath), &st) < 0)
|
|
0
|
2482 return Qnil;
|
|
|
2483 return (st.st_mode & S_IFMT) == S_IFREG ? Qt : Qnil;
|
|
|
2484 }
|
|
|
2485
|
|
20
|
2486 DEFUN ("file-modes", Ffile_modes, 1, 1, 0, /*
|
|
0
|
2487 Return mode bits of FILE, as an integer.
|
|
20
|
2488 */
|
|
|
2489 (filename))
|
|
0
|
2490 {
|
|
124
|
2491 /* This function can GC. GC checked 1997.04.10. */
|
|
0
|
2492 Lisp_Object abspath;
|
|
|
2493 struct stat st;
|
|
|
2494 Lisp_Object handler;
|
|
|
2495 struct gcpro gcpro1;
|
|
151
|
2496
|
|
114
|
2497 GCPRO1 (current_buffer->directory);
|
|
0
|
2498 abspath = expand_and_dir_to_file (filename,
|
|
|
2499 current_buffer->directory);
|
|
|
2500 UNGCPRO;
|
|
|
2501
|
|
|
2502 /* If the file name has special constructs in it,
|
|
|
2503 call the corresponding file handler. */
|
|
|
2504 GCPRO1 (abspath);
|
|
|
2505 handler = Ffind_file_name_handler (abspath, Qfile_modes);
|
|
|
2506 UNGCPRO;
|
|
|
2507 if (!NILP (handler))
|
|
|
2508 return call2 (handler, Qfile_modes, abspath);
|
|
|
2509
|
|
16
|
2510 if (stat ((char *) XSTRING_DATA (abspath), &st) < 0)
|
|
0
|
2511 return Qnil;
|
|
211
|
2512 /* Syncing with FSF 19.34.6 note: not in FSF, #if 0'ed out here. */
|
|
|
2513 #if 0
|
|
410
|
2514 #ifdef WIN32_NATIVE
|
|
380
|
2515 if (check_executable (XSTRING_DATA (abspath)))
|
|
0
|
2516 st.st_mode |= S_IEXEC;
|
|
410
|
2517 #endif /* WIN32_NATIVE */
|
|
211
|
2518 #endif /* 0 */
|
|
0
|
2519
|
|
|
2520 return make_int (st.st_mode & 07777);
|
|
|
2521 }
|
|
|
2522
|
|
20
|
2523 DEFUN ("set-file-modes", Fset_file_modes, 2, 2, 0, /*
|
|
0
|
2524 Set mode bits of FILE to MODE (an integer).
|
|
|
2525 Only the 12 low bits of MODE are used.
|
|
20
|
2526 */
|
|
|
2527 (filename, mode))
|
|
0
|
2528 {
|
|
124
|
2529 /* This function can GC. GC checked 1997.04.10. */
|
|
0
|
2530 Lisp_Object abspath;
|
|
|
2531 Lisp_Object handler;
|
|
114
|
2532 struct gcpro gcpro1;
|
|
151
|
2533
|
|
114
|
2534 GCPRO1 (current_buffer->directory);
|
|
0
|
2535 abspath = Fexpand_file_name (filename, current_buffer->directory);
|
|
116
|
2536 UNGCPRO;
|
|
|
2537
|
|
70
|
2538 CHECK_INT (mode);
|
|
44
|
2539
|
|
0
|
2540 /* If the file name has special constructs in it,
|
|
|
2541 call the corresponding file handler. */
|
|
|
2542 GCPRO1 (abspath);
|
|
|
2543 handler = Ffind_file_name_handler (abspath, Qset_file_modes);
|
|
|
2544 UNGCPRO;
|
|
|
2545 if (!NILP (handler))
|
|
|
2546 return call3 (handler, Qset_file_modes, abspath, mode);
|
|
|
2547
|
|
16
|
2548 if (chmod ((char *) XSTRING_DATA (abspath), XINT (mode)) < 0)
|
|
227
|
2549 report_file_error ("Doing chmod", list1 (abspath));
|
|
0
|
2550
|
|
|
2551 return Qnil;
|
|
|
2552 }
|
|
|
2553
|
|
20
|
2554 DEFUN ("set-default-file-modes", Fset_default_file_modes, 1, 1, 0, /*
|
|
0
|
2555 Set the file permission bits for newly created files.
|
|
|
2556 MASK should be an integer; if a permission's bit in MASK is 1,
|
|
|
2557 subsequently created files will not have that permission enabled.
|
|
|
2558 Only the low 9 bits are used.
|
|
|
2559 This setting is inherited by subprocesses.
|
|
20
|
2560 */
|
|
|
2561 (mode))
|
|
0
|
2562 {
|
|
|
2563 CHECK_INT (mode);
|
|
151
|
2564
|
|
0
|
2565 umask ((~ XINT (mode)) & 0777);
|
|
|
2566
|
|
|
2567 return Qnil;
|
|
|
2568 }
|
|
|
2569
|
|
20
|
2570 DEFUN ("default-file-modes", Fdefault_file_modes, 0, 0, 0, /*
|
|
0
|
2571 Return the default file protection for created files.
|
|
|
2572 The umask value determines which permissions are enabled in newly
|
|
|
2573 created files. If a permission's bit in the umask is 1, subsequently
|
|
|
2574 created files will not have that permission enabled.
|
|
20
|
2575 */
|
|
|
2576 ())
|
|
0
|
2577 {
|
|
|
2578 int mode;
|
|
|
2579
|
|
|
2580 mode = umask (0);
|
|
|
2581 umask (mode);
|
|
|
2582
|
|
|
2583 return make_int ((~ mode) & 0777);
|
|
|
2584 }
|
|
|
2585
|
|
20
|
2586 DEFUN ("unix-sync", Funix_sync, 0, 0, "", /*
|
|
0
|
2587 Tell Unix to finish all pending disk updates.
|
|
20
|
2588 */
|
|
|
2589 ())
|
|
0
|
2590 {
|
|
410
|
2591 #ifndef WIN32_NATIVE
|
|
0
|
2592 sync ();
|
|
100
|
2593 #endif
|
|
0
|
2594 return Qnil;
|
|
|
2595 }
|
|
|
2596
|
|
|
2597
|
|
20
|
2598 DEFUN ("file-newer-than-file-p", Ffile_newer_than_file_p, 2, 2, 0, /*
|
|
0
|
2599 Return t if file FILE1 is newer than file FILE2.
|
|
|
2600 If FILE1 does not exist, the answer is nil;
|
|
|
2601 otherwise, if FILE2 does not exist, the answer is t.
|
|
20
|
2602 */
|
|
|
2603 (file1, file2))
|
|
0
|
2604 {
|
|
124
|
2605 /* This function can GC. GC checked 1997.04.10. */
|
|
0
|
2606 Lisp_Object abspath1, abspath2;
|
|
|
2607 struct stat st;
|
|
|
2608 int mtime1;
|
|
|
2609 Lisp_Object handler;
|
|
114
|
2610 struct gcpro gcpro1, gcpro2, gcpro3;
|
|
0
|
2611
|
|
|
2612 CHECK_STRING (file1);
|
|
|
2613 CHECK_STRING (file2);
|
|
|
2614
|
|
|
2615 abspath1 = Qnil;
|
|
114
|
2616 abspath2 = Qnil;
|
|
|
2617
|
|
|
2618 GCPRO3 (abspath1, abspath2, current_buffer->directory);
|
|
|
2619 abspath1 = expand_and_dir_to_file (file1, current_buffer->directory);
|
|
|
2620 abspath2 = expand_and_dir_to_file (file2, current_buffer->directory);
|
|
0
|
2621
|
|
|
2622 /* If the file name has special constructs in it,
|
|
|
2623 call the corresponding file handler. */
|
|
|
2624 handler = Ffind_file_name_handler (abspath1, Qfile_newer_than_file_p);
|
|
|
2625 if (NILP (handler))
|
|
|
2626 handler = Ffind_file_name_handler (abspath2, Qfile_newer_than_file_p);
|
|
|
2627 UNGCPRO;
|
|
|
2628 if (!NILP (handler))
|
|
|
2629 return call3 (handler, Qfile_newer_than_file_p, abspath1,
|
|
|
2630 abspath2);
|
|
|
2631
|
|
16
|
2632 if (stat ((char *) XSTRING_DATA (abspath1), &st) < 0)
|
|
0
|
2633 return Qnil;
|
|
|
2634
|
|
|
2635 mtime1 = st.st_mtime;
|
|
|
2636
|
|
16
|
2637 if (stat ((char *) XSTRING_DATA (abspath2), &st) < 0)
|
|
0
|
2638 return Qt;
|
|
|
2639
|
|
|
2640 return (mtime1 > st.st_mtime) ? Qt : Qnil;
|
|
|
2641 }
|
|
|
2642
|
|
|
2643
|
|
2
|
2644 /* Stack sizes > 2**16 is a good way to elicit compiler bugs */
|
|
|
2645 /* #define READ_BUF_SIZE (2 << 16) */
|
|
|
2646 #define READ_BUF_SIZE (1 << 15)
|
|
0
|
2647
|
|
280
|
2648 DEFUN ("insert-file-contents-internal", Finsert_file_contents_internal,
|
|
|
2649 1, 7, 0, /*
|
|
70
|
2650 Insert contents of file FILENAME after point; no coding-system frobbing.
|
|
|
2651 This function is identical to `insert-file-contents' except for the
|
|
|
2652 handling of the CODESYS and USED-CODESYS arguments under
|
|
|
2653 XEmacs/Mule. (When Mule support is not present, both functions are
|
|
|
2654 identical and ignore the CODESYS and USED-CODESYS arguments.)
|
|
|
2655
|
|
|
2656 If support for Mule exists in this Emacs, the file is decoded according
|
|
|
2657 to CODESYS; if omitted, no conversion happens. If USED-CODESYS is non-nil,
|
|
|
2658 it should be a symbol, and the actual coding system that was used for the
|
|
|
2659 decoding is stored into it. It will in general be different from CODESYS
|
|
|
2660 if CODESYS specifies automatic encoding detection or end-of-line detection.
|
|
|
2661
|
|
|
2662 Currently BEG and END refer to byte positions (as opposed to character
|
|
|
2663 positions), even in Mule. (Fixing this is very difficult.)
|
|
20
|
2664 */
|
|
274
|
2665 (filename, visit, beg, end, replace, codesys, used_codesys))
|
|
0
|
2666 {
|
|
116
|
2667 /* This function can call lisp */
|
|
|
2668 /* #### dmoore - this function hasn't been checked for gc recently */
|
|
0
|
2669 struct stat st;
|
|
|
2670 int fd;
|
|
|
2671 int saverrno = 0;
|
|
|
2672 Charcount inserted = 0;
|
|
|
2673 int speccount;
|
|
114
|
2674 struct gcpro gcpro1, gcpro2, gcpro3, gcpro4, gcpro5;
|
|
0
|
2675 Lisp_Object handler = Qnil, val;
|
|
|
2676 int total;
|
|
|
2677 Bufbyte read_buf[READ_BUF_SIZE];
|
|
|
2678 int mc_count;
|
|
|
2679 struct buffer *buf = current_buffer;
|
|
114
|
2680 Lisp_Object curbuf;
|
|
0
|
2681 int not_regular = 0;
|
|
|
2682
|
|
|
2683 if (buf->base_buffer && ! NILP (visit))
|
|
|
2684 error ("Cannot do file visiting in an indirect buffer");
|
|
|
2685
|
|
|
2686 /* No need to call Fbarf_if_buffer_read_only() here.
|
|
|
2687 That's called in begin_multiple_change() or wherever. */
|
|
|
2688
|
|
|
2689 val = Qnil;
|
|
|
2690
|
|
114
|
2691 /* #### dmoore - should probably check in various places to see if
|
|
|
2692 curbuf was killed and if so signal an error? */
|
|
|
2693
|
|
|
2694 XSETBUFFER (curbuf, buf);
|
|
|
2695
|
|
|
2696 GCPRO5 (filename, val, visit, handler, curbuf);
|
|
151
|
2697
|
|
0
|
2698 mc_count = (NILP (replace)) ?
|
|
|
2699 begin_multiple_change (buf, BUF_PT (buf), BUF_PT (buf)) :
|
|
|
2700 begin_multiple_change (buf, BUF_BEG (buf), BUF_Z (buf));
|
|
|
2701
|
|
|
2702 speccount = specpdl_depth (); /* begin_multiple_change also adds
|
|
|
2703 an unwind_protect */
|
|
|
2704
|
|
|
2705 filename = Fexpand_file_name (filename, Qnil);
|
|
|
2706
|
|
|
2707 /* If the file name has special constructs in it,
|
|
|
2708 call the corresponding file handler. */
|
|
|
2709 handler = Ffind_file_name_handler (filename, Qinsert_file_contents);
|
|
|
2710 if (!NILP (handler))
|
|
|
2711 {
|
|
74
|
2712 val = call6 (handler, Qinsert_file_contents, filename,
|
|
|
2713 visit, beg, end, replace);
|
|
0
|
2714 goto handled;
|
|
|
2715 }
|
|
|
2716
|
|
259
|
2717 #ifdef FILE_CODING
|
|
70
|
2718 if (!NILP (used_codesys))
|
|
|
2719 CHECK_SYMBOL (used_codesys);
|
|
|
2720 #endif
|
|
|
2721
|
|
0
|
2722 if ( (!NILP (beg) || !NILP (end)) && !NILP (visit) )
|
|
|
2723 error ("Attempt to visit less than an entire file");
|
|
151
|
2724
|
|
0
|
2725 fd = -1;
|
|
|
2726
|
|
398
|
2727 if (stat ((char *) XSTRING_DATA (filename), &st) < 0)
|
|
0
|
2728 {
|
|
|
2729 if (fd >= 0) close (fd);
|
|
|
2730 badopen:
|
|
|
2731 if (NILP (visit))
|
|
227
|
2732 report_file_error ("Opening input file", list1 (filename));
|
|
0
|
2733 st.st_mtime = -1;
|
|
|
2734 goto notfound;
|
|
|
2735 }
|
|
|
2736
|
|
|
2737 #ifdef S_IFREG
|
|
209
|
2738 /* Signal an error if we are accessing a non-regular file, with
|
|
|
2739 REPLACE, BEG or END being non-nil. */
|
|
0
|
2740 if (!S_ISREG (st.st_mode))
|
|
|
2741 {
|
|
173
|
2742 not_regular = 1;
|
|
|
2743
|
|
|
2744 if (!NILP (visit))
|
|
|
2745 goto notfound;
|
|
|
2746
|
|
|
2747 if (!NILP (replace) || !NILP (beg) || !NILP (end))
|
|
0
|
2748 {
|
|
|
2749 end_multiple_change (buf, mc_count);
|
|
|
2750
|
|
371
|
2751 return Fsignal (Qfile_error,
|
|
|
2752 list2 (build_translated_string("not a regular file"),
|
|
|
2753 filename));
|
|
0
|
2754 }
|
|
|
2755 }
|
|
183
|
2756 #endif /* S_IFREG */
|
|
0
|
2757
|
|
173
|
2758 if (!NILP (beg))
|
|
|
2759 CHECK_INT (beg);
|
|
|
2760 else
|
|
|
2761 beg = Qzero;
|
|
|
2762
|
|
|
2763 if (!NILP (end))
|
|
|
2764 CHECK_INT (end);
|
|
|
2765
|
|
0
|
2766 if (fd < 0)
|
|
225
|
2767 {
|
|
|
2768 if ((fd = interruptible_open ((char *) XSTRING_DATA (filename),
|
|
251
|
2769 O_RDONLY | OPEN_BINARY, 0)) < 0)
|
|
225
|
2770 goto badopen;
|
|
|
2771 }
|
|
0
|
2772
|
|
|
2773 /* Replacement should preserve point as it preserves markers. */
|
|
|
2774 if (!NILP (replace))
|
|
|
2775 record_unwind_protect (restore_point_unwind, Fpoint_marker (Qnil, Qnil));
|
|
|
2776
|
|
|
2777 record_unwind_protect (close_file_unwind, make_int (fd));
|
|
|
2778
|
|
|
2779 /* Supposedly happens on VMS. */
|
|
|
2780 if (st.st_size < 0)
|
|
|
2781 error ("File size is negative");
|
|
|
2782
|
|
|
2783 if (NILP (end))
|
|
|
2784 {
|
|
173
|
2785 if (!not_regular)
|
|
|
2786 {
|
|
|
2787 end = make_int (st.st_size);
|
|
|
2788 if (XINT (end) != st.st_size)
|
|
|
2789 error ("Maximum buffer size exceeded");
|
|
|
2790 }
|
|
0
|
2791 }
|
|
|
2792
|
|
|
2793 /* If requested, replace the accessible part of the buffer
|
|
|
2794 with the file contents. Avoid replacing text at the
|
|
|
2795 beginning or end of the buffer that matches the file contents;
|
|
|
2796 that preserves markers pointing to the unchanged parts. */
|
|
259
|
2797 #if !defined (FILE_CODING)
|
|
0
|
2798 /* The replace-mode code currently only works when the assumption
|
|
211
|
2799 'one byte == one char' holds true. This fails Mule because
|
|
|
2800 files may contain multibyte characters. It holds under Windows NT
|
|
|
2801 provided we convert CRLF into LF. */
|
|
0
|
2802 # define FSFMACS_SPEEDY_INSERT
|
|
265
|
2803 #endif /* !defined (FILE_CODING) */
|
|
|
2804
|
|
0
|
2805 #ifndef FSFMACS_SPEEDY_INSERT
|
|
|
2806 if (!NILP (replace))
|
|
|
2807 {
|
|
|
2808 buffer_delete_range (buf, BUF_BEG (buf), BUF_Z (buf),
|
|
|
2809 !NILP (visit) ? INSDEL_NO_LOCKING : 0);
|
|
|
2810 }
|
|
|
2811 #else /* FSFMACS_SPEEDY_INSERT */
|
|
|
2812 if (!NILP (replace))
|
|
|
2813 {
|
|
|
2814 char buffer[1 << 14];
|
|
|
2815 Bufpos same_at_start = BUF_BEGV (buf);
|
|
|
2816 Bufpos same_at_end = BUF_ZV (buf);
|
|
|
2817 int overlap;
|
|
|
2818
|
|
|
2819 /* Count how many chars at the start of the file
|
|
|
2820 match the text at the beginning of the buffer. */
|
|
|
2821 while (1)
|
|
|
2822 {
|
|
|
2823 int nread;
|
|
|
2824 Bufpos bufpos;
|
|
|
2825 nread = read_allowing_quit (fd, buffer, sizeof buffer);
|
|
|
2826 if (nread < 0)
|
|
|
2827 error ("IO error reading %s: %s",
|
|
16
|
2828 XSTRING_DATA (filename), strerror (errno));
|
|
0
|
2829 else if (nread == 0)
|
|
|
2830 break;
|
|
|
2831 bufpos = 0;
|
|
|
2832 while (bufpos < nread && same_at_start < BUF_ZV (buf)
|
|
|
2833 && BUF_FETCH_CHAR (buf, same_at_start) == buffer[bufpos])
|
|
|
2834 same_at_start++, bufpos++;
|
|
|
2835 /* If we found a discrepancy, stop the scan.
|
|
211
|
2836 Otherwise loop around and scan the next bufferful. */
|
|
0
|
2837 if (bufpos != nread)
|
|
|
2838 break;
|
|
|
2839 }
|
|
|
2840 /* If the file matches the buffer completely,
|
|
|
2841 there's no need to replace anything. */
|
|
|
2842 if (same_at_start - BUF_BEGV (buf) == st.st_size)
|
|
|
2843 {
|
|
|
2844 close (fd);
|
|
|
2845 unbind_to (speccount, Qnil);
|
|
|
2846 /* Truncate the buffer to the size of the file. */
|
|
|
2847 buffer_delete_range (buf, same_at_start, same_at_end,
|
|
|
2848 !NILP (visit) ? INSDEL_NO_LOCKING : 0);
|
|
|
2849 goto handled;
|
|
|
2850 }
|
|
|
2851 /* Count how many chars at the end of the file
|
|
|
2852 match the text at the end of the buffer. */
|
|
|
2853 while (1)
|
|
|
2854 {
|
|
|
2855 int total_read, nread;
|
|
|
2856 Bufpos bufpos, curpos, trial;
|
|
|
2857
|
|
|
2858 /* At what file position are we now scanning? */
|
|
|
2859 curpos = st.st_size - (BUF_ZV (buf) - same_at_end);
|
|
|
2860 /* If the entire file matches the buffer tail, stop the scan. */
|
|
|
2861 if (curpos == 0)
|
|
|
2862 break;
|
|
|
2863 /* How much can we scan in the next step? */
|
|
272
|
2864 trial = min (curpos, (Bufpos) sizeof (buffer));
|
|
0
|
2865 if (lseek (fd, curpos - trial, 0) < 0)
|
|
227
|
2866 report_file_error ("Setting file position", list1 (filename));
|
|
0
|
2867
|
|
|
2868 total_read = 0;
|
|
|
2869 while (total_read < trial)
|
|
|
2870 {
|
|
|
2871 nread = read_allowing_quit (fd, buffer + total_read,
|
|
|
2872 trial - total_read);
|
|
|
2873 if (nread <= 0)
|
|
227
|
2874 report_file_error ("IO error reading file", list1 (filename));
|
|
0
|
2875 total_read += nread;
|
|
|
2876 }
|
|
211
|
2877 /* Scan this bufferful from the end, comparing with
|
|
0
|
2878 the Emacs buffer. */
|
|
|
2879 bufpos = total_read;
|
|
|
2880 /* Compare with same_at_start to avoid counting some buffer text
|
|
|
2881 as matching both at the file's beginning and at the end. */
|
|
|
2882 while (bufpos > 0 && same_at_end > same_at_start
|
|
|
2883 && BUF_FETCH_CHAR (buf, same_at_end - 1) ==
|
|
|
2884 buffer[bufpos - 1])
|
|
|
2885 same_at_end--, bufpos--;
|
|
|
2886 /* If we found a discrepancy, stop the scan.
|
|
211
|
2887 Otherwise loop around and scan the preceding bufferful. */
|
|
0
|
2888 if (bufpos != 0)
|
|
|
2889 break;
|
|
|
2890 /* If display current starts at beginning of line,
|
|
|
2891 keep it that way. */
|
|
|
2892 if (XBUFFER (XWINDOW (Fselected_window (Qnil))->buffer) == buf)
|
|
|
2893 XWINDOW (Fselected_window (Qnil))->start_at_line_beg =
|
|
|
2894 !NILP (Fbolp (make_buffer (buf)));
|
|
|
2895 }
|
|
|
2896
|
|
|
2897 /* Don't try to reuse the same piece of text twice. */
|
|
|
2898 overlap = same_at_start - BUF_BEGV (buf) -
|
|
|
2899 (same_at_end + st.st_size - BUF_ZV (buf));
|
|
|
2900 if (overlap > 0)
|
|
|
2901 same_at_end += overlap;
|
|
|
2902
|
|
|
2903 /* Arrange to read only the nonmatching middle part of the file. */
|
|
|
2904 beg = make_int (same_at_start - BUF_BEGV (buf));
|
|
|
2905 end = make_int (st.st_size - (BUF_ZV (buf) - same_at_end));
|
|
|
2906
|
|
|
2907 buffer_delete_range (buf, same_at_start, same_at_end,
|
|
|
2908 !NILP (visit) ? INSDEL_NO_LOCKING : 0);
|
|
|
2909 /* Insert from the file at the proper position. */
|
|
|
2910 BUF_SET_PT (buf, same_at_start);
|
|
|
2911 }
|
|
|
2912 #endif /* FSFMACS_SPEEDY_INSERT */
|
|
|
2913
|
|
173
|
2914 if (!not_regular)
|
|
|
2915 {
|
|
|
2916 total = XINT (end) - XINT (beg);
|
|
|
2917
|
|
|
2918 /* Make sure point-max won't overflow after this insertion. */
|
|
227
|
2919 if (total != XINT (make_int (total)))
|
|
173
|
2920 error ("Maximum buffer size exceeded");
|
|
|
2921 }
|
|
|
2922 else
|
|
274
|
2923 /* For a special file, all we can do is guess. The value of -1
|
|
|
2924 will make the stream functions read as much as possible. */
|
|
|
2925 total = -1;
|
|
0
|
2926
|
|
|
2927 if (XINT (beg) != 0
|
|
|
2928 #ifdef FSFMACS_SPEEDY_INSERT
|
|
|
2929 /* why was this here? asked jwz. The reason is that the replace-mode
|
|
|
2930 connivings above will normally put the file pointer other than
|
|
|
2931 where it should be. */
|
|
|
2932 || !NILP (replace)
|
|
|
2933 #endif /* !FSFMACS_SPEEDY_INSERT */
|
|
|
2934 )
|
|
|
2935 {
|
|
|
2936 if (lseek (fd, XINT (beg), 0) < 0)
|
|
227
|
2937 report_file_error ("Setting file position", list1 (filename));
|
|
0
|
2938 }
|
|
|
2939
|
|
|
2940 {
|
|
|
2941 Bufpos cur_point = BUF_PT (buf);
|
|
|
2942 struct gcpro ngcpro1;
|
|
|
2943 Lisp_Object stream = make_filedesc_input_stream (fd, 0, total,
|
|
|
2944 LSTR_ALLOW_QUIT);
|
|
|
2945
|
|
|
2946 NGCPRO1 (stream);
|
|
|
2947 Lstream_set_buffering (XLSTREAM (stream), LSTREAM_BLOCKN_BUFFERED, 65536);
|
|
259
|
2948 #ifdef FILE_CODING
|
|
70
|
2949 stream = make_decoding_input_stream
|
|
|
2950 (XLSTREAM (stream), Fget_coding_system (codesys));
|
|
|
2951 Lstream_set_character_mode (XLSTREAM (stream));
|
|
|
2952 Lstream_set_buffering (XLSTREAM (stream), LSTREAM_BLOCKN_BUFFERED, 65536);
|
|
274
|
2953 #endif /* FILE_CODING */
|
|
0
|
2954
|
|
280
|
2955 record_unwind_protect (delete_stream_unwind, stream);
|
|
0
|
2956
|
|
16
|
2957 /* No need to limit the amount of stuff we attempt to read. (It would
|
|
|
2958 be incorrect, anyway, when Mule is enabled.) Instead, the limiting
|
|
|
2959 occurs inside of the filedesc stream. */
|
|
0
|
2960 while (1)
|
|
|
2961 {
|
|
398
|
2962 ssize_t this_len;
|
|
0
|
2963 Charcount cc_inserted;
|
|
|
2964
|
|
|
2965 QUIT;
|
|
|
2966 this_len = Lstream_read (XLSTREAM (stream), read_buf,
|
|
|
2967 sizeof (read_buf));
|
|
151
|
2968
|
|
0
|
2969 if (this_len <= 0)
|
|
|
2970 {
|
|
|
2971 if (this_len < 0)
|
|
|
2972 saverrno = errno;
|
|
|
2973 break;
|
|
|
2974 }
|
|
|
2975
|
|
|
2976 cc_inserted = buffer_insert_raw_string_1 (buf, cur_point, read_buf,
|
|
|
2977 this_len,
|
|
|
2978 !NILP (visit)
|
|
|
2979 ? INSDEL_NO_LOCKING : 0);
|
|
|
2980 inserted += cc_inserted;
|
|
|
2981 cur_point += cc_inserted;
|
|
|
2982 }
|
|
259
|
2983 #ifdef FILE_CODING
|
|
70
|
2984 if (!NILP (used_codesys))
|
|
|
2985 {
|
|
|
2986 Fset (used_codesys,
|
|
|
2987 XCODING_SYSTEM_NAME (decoding_stream_coding_system (XLSTREAM (stream))));
|
|
|
2988 }
|
|
274
|
2989 #endif /* FILE_CODING */
|
|
0
|
2990 NUNGCPRO;
|
|
|
2991 }
|
|
|
2992
|
|
|
2993 /* Close the file/stream */
|
|
|
2994 unbind_to (speccount, Qnil);
|
|
|
2995
|
|
|
2996 if (saverrno != 0)
|
|
|
2997 {
|
|
|
2998 error ("IO error reading %s: %s",
|
|
16
|
2999 XSTRING_DATA (filename), strerror (saverrno));
|
|
0
|
3000 }
|
|
|
3001
|
|
|
3002 notfound:
|
|
|
3003 handled:
|
|
|
3004
|
|
|
3005 end_multiple_change (buf, mc_count);
|
|
|
3006
|
|
|
3007 if (!NILP (visit))
|
|
|
3008 {
|
|
|
3009 if (!EQ (buf->undo_list, Qt))
|
|
|
3010 buf->undo_list = Qnil;
|
|
|
3011 if (NILP (handler))
|
|
|
3012 {
|
|
|
3013 buf->modtime = st.st_mtime;
|
|
|
3014 buf->filename = filename;
|
|
|
3015 /* XEmacs addition: */
|
|
|
3016 /* This function used to be in C, ostensibly so that
|
|
|
3017 it could be called here. But that's just silly.
|
|
|
3018 There's no reason C code can't call out to Lisp
|
|
|
3019 code, and it's a lot cleaner this way. */
|
|
|
3020 if (!NILP (Ffboundp (Qcompute_buffer_file_truename)))
|
|
|
3021 call1 (Qcompute_buffer_file_truename, make_buffer (buf));
|
|
|
3022 }
|
|
|
3023 BUF_SAVE_MODIFF (buf) = BUF_MODIFF (buf);
|
|
|
3024 buf->auto_save_modified = BUF_MODIFF (buf);
|
|
272
|
3025 buf->saved_size = make_int (BUF_SIZE (buf));
|
|
0
|
3026 #ifdef CLASH_DETECTION
|
|
|
3027 if (NILP (handler))
|
|
|
3028 {
|
|
|
3029 if (!NILP (buf->file_truename))
|
|
|
3030 unlock_file (buf->file_truename);
|
|
|
3031 unlock_file (filename);
|
|
|
3032 }
|
|
|
3033 #endif /* CLASH_DETECTION */
|
|
|
3034 if (not_regular)
|
|
|
3035 RETURN_UNGCPRO (Fsignal (Qfile_error,
|
|
|
3036 list2 (build_string ("not a regular file"),
|
|
|
3037 filename)));
|
|
|
3038
|
|
|
3039 /* If visiting nonexistent file, return nil. */
|
|
|
3040 if (buf->modtime == -1)
|
|
|
3041 report_file_error ("Opening input file",
|
|
|
3042 list1 (filename));
|
|
|
3043 }
|
|
|
3044
|
|
|
3045 /* Decode file format */
|
|
|
3046 if (inserted > 0)
|
|
|
3047 {
|
|
151
|
3048 Lisp_Object insval = call3 (Qformat_decode,
|
|
0
|
3049 Qnil, make_int (inserted), visit);
|
|
|
3050 CHECK_INT (insval);
|
|
|
3051 inserted = XINT (insval);
|
|
|
3052 }
|
|
|
3053
|
|
|
3054 if (inserted > 0)
|
|
|
3055 {
|
|
227
|
3056 Lisp_Object p;
|
|
0
|
3057 struct gcpro ngcpro1;
|
|
|
3058
|
|
|
3059 NGCPRO1 (p);
|
|
227
|
3060 EXTERNAL_LIST_LOOP (p, Vafter_insert_file_functions)
|
|
0
|
3061 {
|
|
|
3062 Lisp_Object insval =
|
|
227
|
3063 call1 (XCAR (p), make_int (inserted));
|
|
0
|
3064 if (!NILP (insval))
|
|
|
3065 {
|
|
|
3066 CHECK_NATNUM (insval);
|
|
|
3067 inserted = XINT (insval);
|
|
|
3068 }
|
|
|
3069 QUIT;
|
|
|
3070 }
|
|
|
3071 NUNGCPRO;
|
|
|
3072 }
|
|
|
3073
|
|
|
3074 UNGCPRO;
|
|
|
3075
|
|
|
3076 if (!NILP (val))
|
|
|
3077 return (val);
|
|
|
3078 else
|
|
|
3079 return (list2 (filename, make_int (inserted)));
|
|
|
3080 }
|
|
|
3081
|
|
|
3082
|
|
|
3083 static int a_write (Lisp_Object outstream, Lisp_Object instream, int pos,
|
|
|
3084 Lisp_Object *annot);
|
|
|
3085 static Lisp_Object build_annotations (Lisp_Object start, Lisp_Object end);
|
|
|
3086
|
|
|
3087 /* If build_annotations switched buffers, switch back to BUF.
|
|
|
3088 Kill the temporary buffer that was selected in the meantime. */
|
|
|
3089
|
|
151
|
3090 static Lisp_Object
|
|
0
|
3091 build_annotations_unwind (Lisp_Object buf)
|
|
|
3092 {
|
|
|
3093 Lisp_Object tembuf;
|
|
|
3094
|
|
|
3095 if (XBUFFER (buf) == current_buffer)
|
|
|
3096 return Qnil;
|
|
|
3097 tembuf = Fcurrent_buffer ();
|
|
|
3098 Fset_buffer (buf);
|
|
|
3099 Fkill_buffer (tembuf);
|
|
|
3100 return Qnil;
|
|
|
3101 }
|
|
|
3102
|
|
70
|
3103 DEFUN ("write-region-internal", Fwrite_region_internal, 3, 7,
|
|
20
|
3104 "r\nFWrite region to file: ", /*
|
|
70
|
3105 Write current region into specified file; no coding-system frobbing.
|
|
|
3106 This function is identical to `write-region' except for the handling
|
|
|
3107 of the CODESYS argument under XEmacs/Mule. (When Mule support is not
|
|
|
3108 present, both functions are identical and ignore the CODESYS argument.)
|
|
|
3109 If support for Mule exists in this Emacs, the file is encoded according
|
|
|
3110 to the value of CODESYS. If this is nil, no code conversion occurs.
|
|
20
|
3111 */
|
|
70
|
3112 (start, end, filename, append, visit, lockname, codesys))
|
|
0
|
3113 {
|
|
116
|
3114 /* This function can call lisp */
|
|
0
|
3115 int desc;
|
|
|
3116 int failure;
|
|
|
3117 int save_errno = 0;
|
|
|
3118 struct stat st;
|
|
371
|
3119 Lisp_Object fn;
|
|
0
|
3120 int speccount = specpdl_depth ();
|
|
|
3121 int visiting_other = STRINGP (visit);
|
|
|
3122 int visiting = (EQ (visit, Qt) || visiting_other);
|
|
|
3123 int quietly = (!visiting && !NILP (visit));
|
|
|
3124 Lisp_Object visit_file = Qnil;
|
|
|
3125 Lisp_Object annotations = Qnil;
|
|
|
3126 struct buffer *given_buffer;
|
|
|
3127 Bufpos start1, end1;
|
|
371
|
3128
|
|
|
3129 /* #### dmoore - if Fexpand_file_name or handlers kill the buffer,
|
|
114
|
3130 we should signal an error rather than blissfully continuing
|
|
|
3131 along. ARGH, this function is going to lose lose lose. We need
|
|
|
3132 to protect the current_buffer from being destroyed, but the
|
|
371
|
3133 multiple return points make this a pain in the butt. */
|
|
114
|
3134
|
|
259
|
3135 #ifdef FILE_CODING
|
|
70
|
3136 codesys = Fget_coding_system (codesys);
|
|
274
|
3137 #endif /* FILE_CODING */
|
|
70
|
3138
|
|
0
|
3139 if (current_buffer->base_buffer && ! NILP (visit))
|
|
|
3140 error ("Cannot do file visiting in an indirect buffer");
|
|
|
3141
|
|
|
3142 if (!NILP (start) && !STRINGP (start))
|
|
|
3143 get_buffer_range_char (current_buffer, start, end, &start1, &end1, 0);
|
|
|
3144
|
|
|
3145 {
|
|
|
3146 Lisp_Object handler;
|
|
371
|
3147 struct gcpro gcpro1, gcpro2, gcpro3, gcpro4, gcpro5;
|
|
|
3148
|
|
|
3149 GCPRO5 (start, filename, visit, visit_file, lockname);
|
|
0
|
3150
|
|
|
3151 if (visiting_other)
|
|
|
3152 visit_file = Fexpand_file_name (visit, Qnil);
|
|
|
3153 else
|
|
|
3154 visit_file = filename;
|
|
|
3155 filename = Fexpand_file_name (filename, Qnil);
|
|
|
3156
|
|
371
|
3157 UNGCPRO;
|
|
|
3158
|
|
0
|
3159 if (NILP (lockname))
|
|
|
3160 lockname = visit_file;
|
|
|
3161
|
|
|
3162 /* If the file name has special constructs in it,
|
|
|
3163 call the corresponding file handler. */
|
|
|
3164 handler = Ffind_file_name_handler (filename, Qwrite_region);
|
|
|
3165 /* If FILENAME has no handler, see if VISIT has one. */
|
|
|
3166 if (NILP (handler) && STRINGP (visit))
|
|
|
3167 handler = Ffind_file_name_handler (visit, Qwrite_region);
|
|
|
3168
|
|
|
3169 if (!NILP (handler))
|
|
|
3170 {
|
|
151
|
3171 Lisp_Object val = call8 (handler, Qwrite_region, start, end,
|
|
86
|
3172 filename, append, visit, lockname, codesys);
|
|
0
|
3173 if (visiting)
|
|
|
3174 {
|
|
|
3175 BUF_SAVE_MODIFF (current_buffer) = BUF_MODIFF (current_buffer);
|
|
272
|
3176 current_buffer->saved_size = make_int (BUF_SIZE (current_buffer));
|
|
0
|
3177 current_buffer->filename = visit_file;
|
|
|
3178 MARK_MODELINE_CHANGED;
|
|
|
3179 }
|
|
|
3180 return val;
|
|
|
3181 }
|
|
|
3182 }
|
|
|
3183
|
|
|
3184 #ifdef CLASH_DETECTION
|
|
|
3185 if (!auto_saving)
|
|
371
|
3186 {
|
|
|
3187 Lisp_Object curbuf;
|
|
|
3188 struct gcpro gcpro1, gcpro2, gcpro3, gcpro4, gcpro5;
|
|
|
3189
|
|
|
3190 XSETBUFFER (curbuf, current_buffer);
|
|
|
3191 GCPRO5 (start, filename, visit_file, lockname, curbuf);
|
|
|
3192 lock_file (lockname);
|
|
|
3193 UNGCPRO;
|
|
|
3194 }
|
|
0
|
3195 #endif /* CLASH_DETECTION */
|
|
|
3196
|
|
|
3197 /* Special kludge to simplify auto-saving. */
|
|
|
3198 if (NILP (start))
|
|
|
3199 {
|
|
|
3200 start1 = BUF_BEG (current_buffer);
|
|
|
3201 end1 = BUF_Z (current_buffer);
|
|
|
3202 }
|
|
|
3203
|
|
|
3204 record_unwind_protect (build_annotations_unwind, Fcurrent_buffer ());
|
|
|
3205
|
|
|
3206 given_buffer = current_buffer;
|
|
|
3207 annotations = build_annotations (start, end);
|
|
|
3208 if (current_buffer != given_buffer)
|
|
|
3209 {
|
|
|
3210 start1 = BUF_BEGV (current_buffer);
|
|
|
3211 end1 = BUF_ZV (current_buffer);
|
|
|
3212 }
|
|
|
3213
|
|
|
3214 fn = filename;
|
|
|
3215 desc = -1;
|
|
|
3216 if (!NILP (append))
|
|
265
|
3217 {
|
|
|
3218 desc = open ((char *) XSTRING_DATA (fn), O_WRONLY | OPEN_BINARY, 0);
|
|
|
3219 }
|
|
0
|
3220 if (desc < 0)
|
|
|
3221 {
|
|
251
|
3222 desc = open ((char *) XSTRING_DATA (fn),
|
|
400
|
3223 O_WRONLY | O_TRUNC | O_CREAT | OPEN_BINARY,
|
|
|
3224 auto_saving ? auto_save_mode_bits : CREAT_MODE);
|
|
0
|
3225 }
|
|
|
3226
|
|
|
3227 if (desc < 0)
|
|
|
3228 {
|
|
|
3229 #ifdef CLASH_DETECTION
|
|
|
3230 save_errno = errno;
|
|
|
3231 if (!auto_saving) unlock_file (lockname);
|
|
|
3232 errno = save_errno;
|
|
|
3233 #endif /* CLASH_DETECTION */
|
|
227
|
3234 report_file_error ("Opening output file", list1 (filename));
|
|
0
|
3235 }
|
|
|
3236
|
|
|
3237 {
|
|
|
3238 Lisp_Object desc_locative = Fcons (make_int (desc), Qnil);
|
|
|
3239 Lisp_Object instream = Qnil, outstream = Qnil;
|
|
371
|
3240 struct gcpro gcpro1, gcpro2;
|
|
0
|
3241 /* need to gcpro; QUIT could happen out of call to write() */
|
|
371
|
3242 GCPRO2 (instream, outstream);
|
|
0
|
3243
|
|
|
3244 record_unwind_protect (close_file_unwind, desc_locative);
|
|
|
3245
|
|
|
3246 if (!NILP (append))
|
|
|
3247 {
|
|
|
3248 if (lseek (desc, 0, 2) < 0)
|
|
|
3249 {
|
|
|
3250 #ifdef CLASH_DETECTION
|
|
|
3251 if (!auto_saving) unlock_file (lockname);
|
|
|
3252 #endif /* CLASH_DETECTION */
|
|
|
3253 report_file_error ("Lseek error",
|
|
|
3254 list1 (filename));
|
|
|
3255 }
|
|
|
3256 }
|
|
|
3257
|
|
|
3258 failure = 0;
|
|
|
3259
|
|
|
3260 /* Note: I tried increasing the buffering size, along with
|
|
|
3261 various other tricks, but nothing seemed to make much of
|
|
|
3262 a difference in the time it took to save a large file.
|
|
|
3263 (Actually that's not true. With a local disk, changing
|
|
|
3264 the buffer size doesn't seem to make much difference.
|
|
|
3265 With an NFS-mounted disk, it could make a lot of difference
|
|
|
3266 because you're affecting the number of network requests
|
|
|
3267 that need to be made, and there could be a large latency
|
|
|
3268 for each request. So I've increased the buffer size
|
|
|
3269 to 64K.) */
|
|
|
3270 outstream = make_filedesc_output_stream (desc, 0, -1, 0);
|
|
|
3271 Lstream_set_buffering (XLSTREAM (outstream),
|
|
|
3272 LSTREAM_BLOCKN_BUFFERED, 65536);
|
|
259
|
3273 #ifdef FILE_CODING
|
|
70
|
3274 outstream =
|
|
185
|
3275 make_encoding_output_stream (XLSTREAM (outstream), codesys);
|
|
70
|
3276 Lstream_set_buffering (XLSTREAM (outstream),
|
|
|
3277 LSTREAM_BLOCKN_BUFFERED, 65536);
|
|
274
|
3278 #endif /* FILE_CODING */
|
|
0
|
3279 if (STRINGP (start))
|
|
|
3280 {
|
|
|
3281 instream = make_lisp_string_input_stream (start, 0, -1);
|
|
|
3282 start1 = 0;
|
|
|
3283 }
|
|
|
3284 else
|
|
|
3285 instream = make_lisp_buffer_input_stream (current_buffer, start1, end1,
|
|
|
3286 LSTR_SELECTIVE |
|
|
|
3287 LSTR_IGNORE_ACCESSIBLE);
|
|
|
3288 failure = (0 > (a_write (outstream, instream, start1,
|
|
|
3289 &annotations)));
|
|
|
3290 save_errno = errno;
|
|
|
3291 /* Note that this doesn't close the desc since we created the
|
|
|
3292 stream without the LSTR_CLOSING flag, but it does
|
|
|
3293 flush out any buffered data. */
|
|
|
3294 if (Lstream_close (XLSTREAM (outstream)) < 0)
|
|
|
3295 {
|
|
|
3296 failure = 1;
|
|
|
3297 save_errno = errno;
|
|
|
3298 }
|
|
|
3299 Lstream_close (XLSTREAM (instream));
|
|
371
|
3300 UNGCPRO;
|
|
0
|
3301
|
|
|
3302 #ifdef HAVE_FSYNC
|
|
|
3303 /* Note fsync appears to change the modtime on BSD4.2 (both vax and sun).
|
|
|
3304 Disk full in NFS may be reported here. */
|
|
|
3305 /* mib says that closing the file will try to write as fast as NFS can do
|
|
|
3306 it, and that means the fsync here is not crucial for autosave files. */
|
|
|
3307 if (!auto_saving && fsync (desc) < 0
|
|
|
3308 /* If fsync fails with EINTR, don't treat that as serious. */
|
|
|
3309 && errno != EINTR)
|
|
|
3310 {
|
|
|
3311 failure = 1;
|
|
|
3312 save_errno = errno;
|
|
|
3313 }
|
|
183
|
3314 #endif /* HAVE_FSYNC */
|
|
0
|
3315
|
|
398
|
3316 /* Spurious "file has changed on disk" warnings used to be seen on
|
|
|
3317 systems where close() can change the modtime. This is known to
|
|
|
3318 happen on various NFS file systems, on Windows, and on Linux.
|
|
|
3319 Rather than handling this on a per-system basis, we
|
|
|
3320 unconditionally do the stat() after the close(). */
|
|
0
|
3321
|
|
|
3322 /* NFS can report a write failure now. */
|
|
|
3323 if (close (desc) < 0)
|
|
|
3324 {
|
|
|
3325 failure = 1;
|
|
|
3326 save_errno = errno;
|
|
|
3327 }
|
|
|
3328
|
|
|
3329 /* Discard the close unwind-protect. Execute the one for
|
|
|
3330 build_annotations (switches back to the original current buffer
|
|
|
3331 as necessary). */
|
|
|
3332 XCAR (desc_locative) = Qnil;
|
|
|
3333 unbind_to (speccount, Qnil);
|
|
|
3334 }
|
|
151
|
3335
|
|
16
|
3336 stat ((char *) XSTRING_DATA (fn), &st);
|
|
0
|
3337
|
|
|
3338 #ifdef CLASH_DETECTION
|
|
|
3339 if (!auto_saving)
|
|
|
3340 unlock_file (lockname);
|
|
|
3341 #endif /* CLASH_DETECTION */
|
|
|
3342
|
|
|
3343 /* Do this before reporting IO error
|
|
|
3344 to avoid a "file has changed on disk" warning on
|
|
|
3345 next attempt to save. */
|
|
|
3346 if (visiting)
|
|
|
3347 current_buffer->modtime = st.st_mtime;
|
|
|
3348
|
|
|
3349 if (failure)
|
|
151
|
3350 error ("IO error writing %s: %s",
|
|
|
3351 XSTRING_DATA (fn),
|
|
0
|
3352 strerror (save_errno));
|
|
|
3353
|
|
|
3354 if (visiting)
|
|
|
3355 {
|
|
|
3356 BUF_SAVE_MODIFF (current_buffer) = BUF_MODIFF (current_buffer);
|
|
272
|
3357 current_buffer->saved_size = make_int (BUF_SIZE (current_buffer));
|
|
0
|
3358 current_buffer->filename = visit_file;
|
|
|
3359 MARK_MODELINE_CHANGED;
|
|
|
3360 }
|
|
|
3361 else if (quietly)
|
|
|
3362 {
|
|
|
3363 return Qnil;
|
|
|
3364 }
|
|
|
3365
|
|
|
3366 if (!auto_saving)
|
|
|
3367 {
|
|
|
3368 if (visiting_other)
|
|
16
|
3369 message ("Wrote %s", XSTRING_DATA (visit_file));
|
|
0
|
3370 else
|
|
|
3371 {
|
|
371
|
3372 struct gcpro gcpro1;
|
|
|
3373 Lisp_Object fsp;
|
|
|
3374 GCPRO1 (fn);
|
|
|
3375
|
|
0
|
3376 fsp = Ffile_symlink_p (fn);
|
|
|
3377 if (NILP (fsp))
|
|
16
|
3378 message ("Wrote %s", XSTRING_DATA (fn));
|
|
0
|
3379 else
|
|
151
|
3380 message ("Wrote %s (symlink to %s)",
|
|
16
|
3381 XSTRING_DATA (fn), XSTRING_DATA (fsp));
|
|
371
|
3382 UNGCPRO;
|
|
0
|
3383 }
|
|
|
3384 }
|
|
|
3385 return Qnil;
|
|
|
3386 }
|
|
|
3387
|
|
|
3388 /* #### This is such a load of shit!!!! There is no way we should define
|
|
|
3389 something so stupid as a subr, just sort the fucking list more
|
|
|
3390 intelligently. */
|
|
20
|
3391 DEFUN ("car-less-than-car", Fcar_less_than_car, 2, 2, 0, /*
|
|
0
|
3392 Return t if (car A) is numerically less than (car B).
|
|
20
|
3393 */
|
|
|
3394 (a, b))
|
|
0
|
3395 {
|
|
380
|
3396 Lisp_Object objs[2];
|
|
|
3397 objs[0] = Fcar (a);
|
|
|
3398 objs[1] = Fcar (b);
|
|
|
3399 return Flss (2, objs);
|
|
0
|
3400 }
|
|
|
3401
|
|
|
3402 /* Heh heh heh, let's define this too, just to aggravate the person who
|
|
|
3403 wrote the above comment. */
|
|
20
|
3404 DEFUN ("cdr-less-than-cdr", Fcdr_less_than_cdr, 2, 2, 0, /*
|
|
0
|
3405 Return t if (cdr A) is numerically less than (cdr B).
|
|
20
|
3406 */
|
|
|
3407 (a, b))
|
|
0
|
3408 {
|
|
380
|
3409 Lisp_Object objs[2];
|
|
|
3410 objs[0] = Fcdr (a);
|
|
|
3411 objs[1] = Fcdr (b);
|
|
|
3412 return Flss (2, objs);
|
|
0
|
3413 }
|
|
|
3414
|
|
|
3415 /* Build the complete list of annotations appropriate for writing out
|
|
|
3416 the text between START and END, by calling all the functions in
|
|
|
3417 write-region-annotate-functions and merging the lists they return.
|
|
|
3418 If one of these functions switches to a different buffer, we assume
|
|
|
3419 that buffer contains altered text. Therefore, the caller must
|
|
|
3420 make sure to restore the current buffer in all cases,
|
|
|
3421 as save-excursion would do. */
|
|
|
3422
|
|
|
3423 static Lisp_Object
|
|
|
3424 build_annotations (Lisp_Object start, Lisp_Object end)
|
|
|
3425 {
|
|
|
3426 /* This function can GC */
|
|
|
3427 Lisp_Object annotations;
|
|
|
3428 Lisp_Object p, res;
|
|
|
3429 struct gcpro gcpro1, gcpro2;
|
|
215
|
3430 Lisp_Object original_buffer;
|
|
|
3431
|
|
|
3432 XSETBUFFER (original_buffer, current_buffer);
|
|
0
|
3433
|
|
|
3434 annotations = Qnil;
|
|
|
3435 p = Vwrite_region_annotate_functions;
|
|
|
3436 GCPRO2 (annotations, p);
|
|
|
3437 while (!NILP (p))
|
|
|
3438 {
|
|
|
3439 struct buffer *given_buffer = current_buffer;
|
|
|
3440 Vwrite_region_annotations_so_far = annotations;
|
|
|
3441 res = call2 (Fcar (p), start, end);
|
|
|
3442 /* If the function makes a different buffer current,
|
|
|
3443 assume that means this buffer contains altered text to be output.
|
|
|
3444 Reset START and END from the buffer bounds
|
|
|
3445 and discard all previous annotations because they should have
|
|
|
3446 been dealt with by this function. */
|
|
|
3447 if (current_buffer != given_buffer)
|
|
|
3448 {
|
|
|
3449 start = make_int (BUF_BEGV (current_buffer));
|
|
|
3450 end = make_int (BUF_ZV (current_buffer));
|
|
|
3451 annotations = Qnil;
|
|
|
3452 }
|
|
183
|
3453 Flength (res); /* Check basic validity of return value */
|
|
0
|
3454 annotations = merge (annotations, res, Qcar_less_than_car);
|
|
|
3455 p = Fcdr (p);
|
|
|
3456 }
|
|
|
3457
|
|
|
3458 /* Now do the same for annotation functions implied by the file-format */
|
|
|
3459 if (auto_saving && (!EQ (Vauto_save_file_format, Qt)))
|
|
|
3460 p = Vauto_save_file_format;
|
|
|
3461 else
|
|
|
3462 p = current_buffer->file_format;
|
|
|
3463 while (!NILP (p))
|
|
|
3464 {
|
|
|
3465 struct buffer *given_buffer = current_buffer;
|
|
|
3466 Vwrite_region_annotations_so_far = annotations;
|
|
215
|
3467 res = call4 (Qformat_annotate_function, Fcar (p), start, end,
|
|
|
3468 original_buffer);
|
|
0
|
3469 if (current_buffer != given_buffer)
|
|
|
3470 {
|
|
|
3471 start = make_int (BUF_BEGV (current_buffer));
|
|
|
3472 end = make_int (BUF_ZV (current_buffer));
|
|
|
3473 annotations = Qnil;
|
|
|
3474 }
|
|
183
|
3475 Flength (res);
|
|
0
|
3476 annotations = merge (annotations, res, Qcar_less_than_car);
|
|
|
3477 p = Fcdr (p);
|
|
|
3478 }
|
|
|
3479 UNGCPRO;
|
|
|
3480 return annotations;
|
|
|
3481 }
|
|
|
3482
|
|
|
3483 /* Write to stream OUTSTREAM the characters from INSTREAM (it is read until
|
|
|
3484 EOF is encountered), assuming they start at position POS in the buffer
|
|
|
3485 of string that STREAM refers to. Intersperse with them the annotations
|
|
|
3486 from *ANNOT that fall into the range of positions we are reading from,
|
|
|
3487 each at its appropriate position.
|
|
|
3488
|
|
|
3489 Modify *ANNOT by discarding elements as we output them.
|
|
|
3490 The return value is negative in case of system call failure. */
|
|
|
3491
|
|
|
3492 /* 4K should probably be fine. We just need to reduce the number of
|
|
|
3493 function calls to reasonable level. The Lstream stuff itself will
|
|
|
3494 batch to 64K to reduce the number of system calls. */
|
|
|
3495
|
|
|
3496 #define A_WRITE_BATCH_SIZE 4096
|
|
|
3497
|
|
|
3498 static int
|
|
|
3499 a_write (Lisp_Object outstream, Lisp_Object instream, int pos,
|
|
|
3500 Lisp_Object *annot)
|
|
|
3501 {
|
|
|
3502 Lisp_Object tem;
|
|
|
3503 int nextpos;
|
|
|
3504 unsigned char largebuf[A_WRITE_BATCH_SIZE];
|
|
|
3505 Lstream *instr = XLSTREAM (instream);
|
|
|
3506 Lstream *outstr = XLSTREAM (outstream);
|
|
|
3507
|
|
272
|
3508 while (LISTP (*annot))
|
|
0
|
3509 {
|
|
|
3510 tem = Fcar_safe (Fcar (*annot));
|
|
|
3511 if (INTP (tem))
|
|
|
3512 nextpos = XINT (tem);
|
|
|
3513 else
|
|
|
3514 nextpos = INT_MAX;
|
|
70
|
3515 #ifdef MULE
|
|
|
3516 /* If there are annotations left and we have Mule, then we
|
|
|
3517 have to do the I/O one emchar at a time so we can
|
|
|
3518 determine when to insert the annotation. */
|
|
|
3519 if (!NILP (*annot))
|
|
|
3520 {
|
|
|
3521 Emchar ch;
|
|
|
3522 while (pos != nextpos && (ch = Lstream_get_emchar (instr)) != EOF)
|
|
|
3523 {
|
|
|
3524 if (Lstream_put_emchar (outstr, ch) < 0)
|
|
|
3525 return -1;
|
|
|
3526 pos++;
|
|
|
3527 }
|
|
|
3528 }
|
|
|
3529 else
|
|
183
|
3530 #endif /* MULE */
|
|
0
|
3531 {
|
|
|
3532 while (pos != nextpos)
|
|
|
3533 {
|
|
|
3534 /* Otherwise there is no point to that. Just go in batches. */
|
|
|
3535 int chunk = min (nextpos - pos, A_WRITE_BATCH_SIZE);
|
|
151
|
3536
|
|
0
|
3537 chunk = Lstream_read (instr, largebuf, chunk);
|
|
|
3538 if (chunk < 0)
|
|
|
3539 return -1;
|
|
|
3540 if (chunk == 0) /* EOF */
|
|
|
3541 break;
|
|
|
3542 if (Lstream_write (outstr, largebuf, chunk) < chunk)
|
|
|
3543 return -1;
|
|
|
3544 pos += chunk;
|
|
|
3545 }
|
|
|
3546 }
|
|
|
3547 if (pos == nextpos)
|
|
|
3548 {
|
|
|
3549 tem = Fcdr (Fcar (*annot));
|
|
|
3550 if (STRINGP (tem))
|
|
|
3551 {
|
|
16
|
3552 if (Lstream_write (outstr, XSTRING_DATA (tem),
|
|
|
3553 XSTRING_LENGTH (tem)) < 0)
|
|
0
|
3554 return -1;
|
|
|
3555 }
|
|
|
3556 *annot = Fcdr (*annot);
|
|
|
3557 }
|
|
|
3558 else
|
|
|
3559 return 0;
|
|
|
3560 }
|
|
|
3561 return -1;
|
|
|
3562 }
|
|
|
3563
|
|
|
3564
|
|
|
3565
|
|
|
3566 #if 0
|
|
|
3567 #include <des_crypt.h>
|
|
|
3568
|
|
|
3569 #define CRYPT_BLOCK_SIZE 8 /* bytes */
|
|
|
3570 #define CRYPT_KEY_SIZE 8 /* bytes */
|
|
|
3571
|
|
20
|
3572 DEFUN ("encrypt-string", Fencrypt_string, 2, 2, 0, /*
|
|
0
|
3573 Encrypt STRING using KEY.
|
|
20
|
3574 */
|
|
|
3575 (string, key))
|
|
0
|
3576 {
|
|
|
3577 char *encrypted_string, *raw_key;
|
|
|
3578 int rounded_size, extra, key_size;
|
|
|
3579
|
|
|
3580 /* !!#### May produce bogus data under Mule. */
|
|
|
3581 CHECK_STRING (string);
|
|
|
3582 CHECK_STRING (key);
|
|
|
3583
|
|
16
|
3584 extra = XSTRING_LENGTH (string) % CRYPT_BLOCK_SIZE;
|
|
|
3585 rounded_size = XSTRING_LENGTH (string) + extra;
|
|
0
|
3586 encrypted_string = alloca (rounded_size + 1);
|
|
16
|
3587 memcpy (encrypted_string, XSTRING_DATA (string), XSTRING_LENGTH (string));
|
|
0
|
3588 memset (encrypted_string + rounded_size - extra, 0, extra + 1);
|
|
|
3589
|
|
183
|
3590 key_size = min (CRYPT_KEY_SIZE, XSTRING_LENGTH (key))
|
|
0
|
3591
|
|
|
3592 raw_key = alloca (CRYPT_KEY_SIZE + 1);
|
|
16
|
3593 memcpy (raw_key, XSTRING_DATA (key), key_size);
|
|
0
|
3594 memset (raw_key + key_size, 0, (CRYPT_KEY_SIZE + 1) - key_size);
|
|
|
3595
|
|
183
|
3596 ecb_crypt (raw_key, encrypted_string, rounded_size,
|
|
|
3597 DES_ENCRYPT | DES_SW);
|
|
0
|
3598 return make_string (encrypted_string, rounded_size);
|
|
|
3599 }
|
|
|
3600
|
|
20
|
3601 DEFUN ("decrypt-string", Fdecrypt_string, 2, 2, 0, /*
|
|
0
|
3602 Decrypt STRING using KEY.
|
|
20
|
3603 */
|
|
|
3604 (string, key))
|
|
0
|
3605 {
|
|
|
3606 char *decrypted_string, *raw_key;
|
|
|
3607 int string_size, key_size;
|
|
|
3608
|
|
|
3609 CHECK_STRING (string);
|
|
|
3610 CHECK_STRING (key);
|
|
|
3611
|
|
16
|
3612 string_size = XSTRING_LENGTH (string) + 1;
|
|
0
|
3613 decrypted_string = alloca (string_size);
|
|
16
|
3614 memcpy (decrypted_string, XSTRING_DATA (string), string_size);
|
|
0
|
3615 decrypted_string[string_size - 1] = '\0';
|
|
|
3616
|
|
183
|
3617 key_size = min (CRYPT_KEY_SIZE, XSTRING_LENGTH (key))
|
|
0
|
3618
|
|
|
3619 raw_key = alloca (CRYPT_KEY_SIZE + 1);
|
|
16
|
3620 memcpy (raw_key, XSTRING_DATA (key), key_size);
|
|
0
|
3621 memset (raw_key + key_size, 0, (CRYPT_KEY_SIZE + 1) - key_size);
|
|
|
3622
|
|
|
3623
|
|
183
|
3624 ecb_crypt (raw_key, decrypted_string, string_size, D | DES_SW);
|
|
0
|
3625 return make_string (decrypted_string, string_size - 1);
|
|
|
3626 }
|
|
183
|
3627 #endif /* 0 */
|
|
0
|
3628
|
|
|
3629
|
|
20
|
3630 DEFUN ("verify-visited-file-modtime", Fverify_visited_file_modtime, 1, 1, 0, /*
|
|
0
|
3631 Return t if last mod time of BUF's visited file matches what BUF records.
|
|
|
3632 This means that the file has not been changed since it was visited or saved.
|
|
20
|
3633 */
|
|
|
3634 (buf))
|
|
0
|
3635 {
|
|
371
|
3636 /* This function can call lisp */
|
|
0
|
3637 struct buffer *b;
|
|
|
3638 struct stat st;
|
|
|
3639 Lisp_Object handler;
|
|
|
3640
|
|
|
3641 CHECK_BUFFER (buf);
|
|
|
3642 b = XBUFFER (buf);
|
|
|
3643
|
|
|
3644 if (!STRINGP (b->filename)) return Qt;
|
|
|
3645 if (b->modtime == 0) return Qt;
|
|
|
3646
|
|
|
3647 /* If the file name has special constructs in it,
|
|
|
3648 call the corresponding file handler. */
|
|
|
3649 handler = Ffind_file_name_handler (b->filename,
|
|
|
3650 Qverify_visited_file_modtime);
|
|
|
3651 if (!NILP (handler))
|
|
|
3652 return call2 (handler, Qverify_visited_file_modtime, buf);
|
|
|
3653
|
|
16
|
3654 if (stat ((char *) XSTRING_DATA (b->filename), &st) < 0)
|
|
0
|
3655 {
|
|
|
3656 /* If the file doesn't exist now and didn't exist before,
|
|
|
3657 we say that it isn't modified, provided the error is a tame one. */
|
|
|
3658 if (errno == ENOENT || errno == EACCES || errno == ENOTDIR)
|
|
|
3659 st.st_mtime = -1;
|
|
|
3660 else
|
|
|
3661 st.st_mtime = 0;
|
|
|
3662 }
|
|
|
3663 if (st.st_mtime == b->modtime
|
|
|
3664 /* If both are positive, accept them if they are off by one second. */
|
|
|
3665 || (st.st_mtime > 0 && b->modtime > 0
|
|
|
3666 && (st.st_mtime == b->modtime + 1
|
|
|
3667 || st.st_mtime == b->modtime - 1)))
|
|
|
3668 return Qt;
|
|
|
3669 return Qnil;
|
|
|
3670 }
|
|
|
3671
|
|
20
|
3672 DEFUN ("clear-visited-file-modtime", Fclear_visited_file_modtime, 0, 0, 0, /*
|
|
0
|
3673 Clear out records of last mod time of visited file.
|
|
|
3674 Next attempt to save will certainly not complain of a discrepancy.
|
|
20
|
3675 */
|
|
|
3676 ())
|
|
0
|
3677 {
|
|
|
3678 current_buffer->modtime = 0;
|
|
|
3679 return Qnil;
|
|
|
3680 }
|
|
|
3681
|
|
20
|
3682 DEFUN ("visited-file-modtime", Fvisited_file_modtime, 0, 0, 0, /*
|
|
0
|
3683 Return the current buffer's recorded visited file modification time.
|
|
|
3684 The value is a list of the form (HIGH . LOW), like the time values
|
|
|
3685 that `file-attributes' returns.
|
|
20
|
3686 */
|
|
|
3687 ())
|
|
0
|
3688 {
|
|
|
3689 return time_to_lisp ((time_t) current_buffer->modtime);
|
|
|
3690 }
|
|
|
3691
|
|
20
|
3692 DEFUN ("set-visited-file-modtime", Fset_visited_file_modtime, 0, 1, 0, /*
|
|
0
|
3693 Update buffer's recorded modification time from the visited file's time.
|
|
|
3694 Useful if the buffer was not read from the file normally
|
|
|
3695 or if the file itself has been changed for some known benign reason.
|
|
|
3696 An argument specifies the modification time value to use
|
|
272
|
3697 \(instead of that of the visited file), in the form of a list
|
|
|
3698 \(HIGH . LOW) or (HIGH LOW).
|
|
20
|
3699 */
|
|
|
3700 (time_list))
|
|
0
|
3701 {
|
|
116
|
3702 /* This function can call lisp */
|
|
0
|
3703 if (!NILP (time_list))
|
|
|
3704 {
|
|
|
3705 time_t the_time;
|
|
|
3706 lisp_to_time (time_list, &the_time);
|
|
|
3707 current_buffer->modtime = (int) the_time;
|
|
|
3708 }
|
|
|
3709 else
|
|
|
3710 {
|
|
371
|
3711 Lisp_Object filename;
|
|
0
|
3712 struct stat st;
|
|
|
3713 Lisp_Object handler;
|
|
114
|
3714 struct gcpro gcpro1, gcpro2, gcpro3;
|
|
151
|
3715
|
|
114
|
3716 GCPRO3 (filename, time_list, current_buffer->filename);
|
|
|
3717 filename = Fexpand_file_name (current_buffer->filename, Qnil);
|
|
0
|
3718
|
|
|
3719 /* If the file name has special constructs in it,
|
|
|
3720 call the corresponding file handler. */
|
|
|
3721 handler = Ffind_file_name_handler (filename, Qset_visited_file_modtime);
|
|
|
3722 UNGCPRO;
|
|
|
3723 if (!NILP (handler))
|
|
|
3724 /* The handler can find the file name the same way we did. */
|
|
|
3725 return call2 (handler, Qset_visited_file_modtime, Qnil);
|
|
16
|
3726 else if (stat ((char *) XSTRING_DATA (filename), &st) >= 0)
|
|
0
|
3727 current_buffer->modtime = st.st_mtime;
|
|
|
3728 }
|
|
|
3729
|
|
|
3730 return Qnil;
|
|
|
3731 }
|
|
|
3732
|
|
|
3733 static Lisp_Object
|
|
|
3734 auto_save_error (Lisp_Object condition_object, Lisp_Object ignored)
|
|
|
3735 {
|
|
116
|
3736 /* This function can call lisp */
|
|
0
|
3737 if (gc_in_progress)
|
|
|
3738 return Qnil;
|
|
110
|
3739 /* Don't try printing an error message after everything is gone! */
|
|
|
3740 if (preparing_for_armageddon)
|
|
|
3741 return Qnil;
|
|
0
|
3742 clear_echo_area (selected_frame (), Qauto_saving, 1);
|
|
|
3743 Fding (Qt, Qauto_save_error, Qnil);
|
|
82
|
3744 message ("Auto-saving...error for %s", XSTRING_DATA (current_buffer->name));
|
|
0
|
3745 Fsleep_for (make_int (1));
|
|
82
|
3746 message ("Auto-saving...error!for %s", XSTRING_DATA (current_buffer->name));
|
|
0
|
3747 Fsleep_for (make_int (1));
|
|
82
|
3748 message ("Auto-saving...error for %s", XSTRING_DATA (current_buffer->name));
|
|
0
|
3749 Fsleep_for (make_int (1));
|
|
|
3750 return Qnil;
|
|
|
3751 }
|
|
|
3752
|
|
|
3753 static Lisp_Object
|
|
|
3754 auto_save_1 (Lisp_Object ignored)
|
|
|
3755 {
|
|
116
|
3756 /* This function can call lisp */
|
|
|
3757 /* #### I think caller is protecting current_buffer? */
|
|
0
|
3758 struct stat st;
|
|
|
3759 Lisp_Object fn = current_buffer->filename;
|
|
|
3760 Lisp_Object a = current_buffer->auto_save_file_name;
|
|
|
3761
|
|
|
3762 if (!STRINGP (a))
|
|
|
3763 return (Qnil);
|
|
|
3764
|
|
|
3765 /* Get visited file's mode to become the auto save file's mode. */
|
|
|
3766 if (STRINGP (fn) &&
|
|
16
|
3767 stat ((char *) XSTRING_DATA (fn), &st) >= 0)
|
|
0
|
3768 /* But make sure we can overwrite it later! */
|
|
|
3769 auto_save_mode_bits = st.st_mode | 0600;
|
|
|
3770 else
|
|
|
3771 /* default mode for auto-save files of buffers with no file is
|
|
|
3772 readable by owner only. This may annoy some small number of
|
|
|
3773 people, but the alternative removes all privacy from email. */
|
|
|
3774 auto_save_mode_bits = 0600;
|
|
|
3775
|
|
|
3776 return
|
|
70
|
3777 /* !!#### need to deal with this 'escape-quoted everywhere */
|
|
|
3778 Fwrite_region_internal (Qnil, Qnil, a, Qnil, Qlambda, Qnil,
|
|
|
3779 #ifdef MULE
|
|
|
3780 Qescape_quoted
|
|
|
3781 #else
|
|
|
3782 Qnil
|
|
|
3783 #endif
|
|
|
3784 );
|
|
44
|
3785 }
|
|
|
3786
|
|
116
|
3787 static Lisp_Object
|
|
|
3788 auto_save_expand_name_error (Lisp_Object condition_object, Lisp_Object ignored)
|
|
|
3789 {
|
|
|
3790 /* #### this function should spew an error message about not being
|
|
|
3791 able to open the .saves file. */
|
|
|
3792 return Qnil;
|
|
|
3793 }
|
|
|
3794
|
|
|
3795 static Lisp_Object
|
|
|
3796 auto_save_expand_name (Lisp_Object name)
|
|
|
3797 {
|
|
|
3798 struct gcpro gcpro1;
|
|
|
3799
|
|
|
3800 /* note that caller did NOT gc protect name, so we do it. */
|
|
380
|
3801 /* #### dmoore - this might not be necessary, if condition_case_1
|
|
116
|
3802 protects it. but I don't think it does. */
|
|
|
3803 GCPRO1 (name);
|
|
|
3804 RETURN_UNGCPRO (Fexpand_file_name (name, Qnil));
|
|
|
3805 }
|
|
|
3806
|
|
0
|
3807
|
|
|
3808 static Lisp_Object
|
|
|
3809 do_auto_save_unwind (Lisp_Object fd)
|
|
|
3810 {
|
|
|
3811 close (XINT (fd));
|
|
|
3812 return (fd);
|
|
|
3813 }
|
|
|
3814
|
|
|
3815 static Lisp_Object
|
|
|
3816 do_auto_save_unwind_2 (Lisp_Object old_auto_saving)
|
|
|
3817 {
|
|
|
3818 auto_saving = XINT (old_auto_saving);
|
|
|
3819 return Qnil;
|
|
|
3820 }
|
|
|
3821
|
|
|
3822 /* Fdo_auto_save() checks whether a GC is in progress when it is called,
|
|
|
3823 and if so, tries to avoid touching lisp objects.
|
|
|
3824
|
|
|
3825 The only time that Fdo_auto_save() is called while GC is in progress
|
|
|
3826 is if we're going down, as a result of an abort() or a kill signal.
|
|
|
3827 It's fairly important that we generate autosave files in that case!
|
|
|
3828 */
|
|
|
3829
|
|
20
|
3830 DEFUN ("do-auto-save", Fdo_auto_save, 0, 2, "", /*
|
|
0
|
3831 Auto-save all buffers that need it.
|
|
|
3832 This is all buffers that have auto-saving enabled
|
|
|
3833 and are changed since last auto-saved.
|
|
|
3834 Auto-saving writes the buffer into a file
|
|
|
3835 so that your editing is not lost if the system crashes.
|
|
|
3836 This file is not the file you visited; that changes only when you save.
|
|
|
3837 Normally we run the normal hook `auto-save-hook' before saving.
|
|
|
3838
|
|
|
3839 Non-nil first argument means do not print any message if successful.
|
|
|
3840 Non-nil second argument means save only current buffer.
|
|
20
|
3841 */
|
|
|
3842 (no_message, current_only))
|
|
0
|
3843 {
|
|
116
|
3844 /* This function can call lisp */
|
|
110
|
3845 struct buffer *b;
|
|
0
|
3846 Lisp_Object tail, buf;
|
|
|
3847 int auto_saved = 0;
|
|
|
3848 int do_handled_files;
|
|
|
3849 Lisp_Object oquit = Qnil;
|
|
|
3850 Lisp_Object listfile = Qnil;
|
|
110
|
3851 Lisp_Object old;
|
|
0
|
3852 int listdesc = -1;
|
|
|
3853 int speccount = specpdl_depth ();
|
|
110
|
3854 struct gcpro gcpro1, gcpro2, gcpro3;
|
|
|
3855
|
|
|
3856 XSETBUFFER (old, current_buffer);
|
|
|
3857 GCPRO3 (oquit, listfile, old);
|
|
0
|
3858 check_quit (); /* make Vquit_flag accurate */
|
|
|
3859 /* Ordinarily don't quit within this function,
|
|
|
3860 but don't make it impossible to quit (in case we get hung in I/O). */
|
|
|
3861 oquit = Vquit_flag;
|
|
|
3862 Vquit_flag = Qnil;
|
|
|
3863
|
|
|
3864 /* No further GCPRO needed, because (when it matters) all Lisp_Object
|
|
|
3865 variables point to non-strings reached from Vbuffer_alist. */
|
|
|
3866
|
|
|
3867 if (minibuf_level != 0 || preparing_for_armageddon)
|
|
|
3868 no_message = Qt;
|
|
|
3869
|
|
|
3870 run_hook (Qauto_save_hook);
|
|
|
3871
|
|
398
|
3872 if (STRINGP (Vauto_save_list_file_name))
|
|
116
|
3873 listfile = condition_case_1 (Qt,
|
|
|
3874 auto_save_expand_name,
|
|
|
3875 Vauto_save_list_file_name,
|
|
|
3876 auto_save_expand_name_error, Qnil);
|
|
0
|
3877
|
|
|
3878 /* Make sure auto_saving is reset. */
|
|
|
3879 record_unwind_protect (do_auto_save_unwind_2, make_int (auto_saving));
|
|
|
3880
|
|
|
3881 auto_saving = 1;
|
|
|
3882
|
|
|
3883 /* First, save all files which don't have handlers. If Emacs is
|
|
|
3884 crashing, the handlers may tweak what is causing Emacs to crash
|
|
|
3885 in the first place, and it would be a shame if Emacs failed to
|
|
|
3886 autosave perfectly ordinary files because it couldn't handle some
|
|
|
3887 ange-ftp'd file. */
|
|
|
3888 for (do_handled_files = 0; do_handled_files < 2; do_handled_files++)
|
|
|
3889 {
|
|
|
3890 for (tail = Vbuffer_alist;
|
|
398
|
3891 CONSP (tail);
|
|
0
|
3892 tail = XCDR (tail))
|
|
|
3893 {
|
|
|
3894 buf = XCDR (XCAR (tail));
|
|
|
3895 b = XBUFFER (buf);
|
|
|
3896
|
|
398
|
3897 if (!NILP (current_only)
|
|
0
|
3898 && b != current_buffer)
|
|
|
3899 continue;
|
|
151
|
3900
|
|
0
|
3901 /* Don't auto-save indirect buffers.
|
|
|
3902 The base buffer takes care of it. */
|
|
|
3903 if (b->base_buffer)
|
|
|
3904 continue;
|
|
|
3905
|
|
|
3906 /* Check for auto save enabled
|
|
|
3907 and file changed since last auto save
|
|
|
3908 and file changed since last real save. */
|
|
398
|
3909 if (STRINGP (b->auto_save_file_name)
|
|
0
|
3910 && BUF_SAVE_MODIFF (b) < BUF_MODIFF (b)
|
|
|
3911 && b->auto_save_modified < BUF_MODIFF (b)
|
|
|
3912 /* -1 means we've turned off autosaving for a while--see below. */
|
|
272
|
3913 && XINT (b->saved_size) >= 0
|
|
0
|
3914 && (do_handled_files
|
|
|
3915 || NILP (Ffind_file_name_handler (b->auto_save_file_name,
|
|
|
3916 Qwrite_region))))
|
|
|
3917 {
|
|
|
3918 EMACS_TIME before_time, after_time;
|
|
|
3919
|
|
|
3920 EMACS_GET_TIME (before_time);
|
|
|
3921 /* If we had a failure, don't try again for 20 minutes. */
|
|
|
3922 if (!preparing_for_armageddon
|
|
|
3923 && b->auto_save_failure_time >= 0
|
|
|
3924 && (EMACS_SECS (before_time) - b->auto_save_failure_time <
|
|
|
3925 1200))
|
|
|
3926 continue;
|
|
|
3927
|
|
|
3928 if (!preparing_for_armageddon &&
|
|
272
|
3929 (XINT (b->saved_size) * 10
|
|
0
|
3930 > (BUF_Z (b) - BUF_BEG (b)) * 13)
|
|
|
3931 /* A short file is likely to change a large fraction;
|
|
|
3932 spare the user annoying messages. */
|
|
272
|
3933 && XINT (b->saved_size) > 5000
|
|
0
|
3934 /* These messages are frequent and annoying for `*mail*'. */
|
|
272
|
3935 && !NILP (b->filename)
|
|
0
|
3936 && NILP (no_message)
|
|
|
3937 && disable_auto_save_when_buffer_shrinks)
|
|
|
3938 {
|
|
|
3939 /* It has shrunk too much; turn off auto-saving here.
|
|
|
3940 Unless we're about to crash, in which case auto-save it
|
|
|
3941 anyway.
|
|
|
3942 */
|
|
|
3943 message
|
|
|
3944 ("Buffer %s has shrunk a lot; auto save turned off there",
|
|
16
|
3945 XSTRING_DATA (b->name));
|
|
0
|
3946 /* Turn off auto-saving until there's a real save,
|
|
|
3947 and prevent any more warnings. */
|
|
272
|
3948 b->saved_size = make_int (-1);
|
|
0
|
3949 if (!gc_in_progress)
|
|
|
3950 Fsleep_for (make_int (1));
|
|
|
3951 continue;
|
|
|
3952 }
|
|
|
3953 set_buffer_internal (b);
|
|
398
|
3954 if (!auto_saved && NILP (no_message))
|
|
0
|
3955 {
|
|
398
|
3956 static const unsigned char *msg
|
|
|
3957 = (const unsigned char *) "Auto-saving...";
|
|
0
|
3958 echo_area_message (selected_frame (), msg, Qnil,
|
|
398
|
3959 0, strlen ((const char *) msg),
|
|
0
|
3960 Qauto_saving);
|
|
|
3961 }
|
|
|
3962
|
|
|
3963 /* Open the auto-save list file, if necessary.
|
|
|
3964 We only do this now so that the file only exists
|
|
|
3965 if we actually auto-saved any files. */
|
|
398
|
3966 if (!auto_saved && STRINGP (listfile) && listdesc < 0)
|
|
0
|
3967 {
|
|
251
|
3968 listdesc = open ((char *) XSTRING_DATA (listfile),
|
|
|
3969 O_WRONLY | O_TRUNC | O_CREAT | OPEN_BINARY,
|
|
|
3970 CREAT_MODE);
|
|
0
|
3971
|
|
|
3972 /* Arrange to close that file whether or not we get
|
|
|
3973 an error. */
|
|
|
3974 if (listdesc >= 0)
|
|
|
3975 record_unwind_protect (do_auto_save_unwind,
|
|
|
3976 make_int (listdesc));
|
|
|
3977 }
|
|
|
3978
|
|
|
3979 /* Record all the buffers that we are auto-saving in
|
|
|
3980 the special file that lists them. For each of
|
|
|
3981 these buffers, record visited name (if any) and
|
|
|
3982 auto save name. */
|
|
|
3983 if (listdesc >= 0)
|
|
|
3984 {
|
|
398
|
3985 const Extbyte *auto_save_file_name_ext;
|
|
0
|
3986 Extcount auto_save_file_name_ext_len;
|
|
151
|
3987
|
|
398
|
3988 TO_EXTERNAL_FORMAT (LISP_STRING, b->auto_save_file_name,
|
|
|
3989 ALLOCA, (auto_save_file_name_ext,
|
|
|
3990 auto_save_file_name_ext_len),
|
|
|
3991 Qfile_name);
|
|
0
|
3992 if (!NILP (b->filename))
|
|
|
3993 {
|
|
398
|
3994 const Extbyte *filename_ext;
|
|
0
|
3995 Extcount filename_ext_len;
|
|
151
|
3996
|
|
398
|
3997 TO_EXTERNAL_FORMAT (LISP_STRING, b->filename,
|
|
|
3998 ALLOCA, (filename_ext,
|
|
|
3999 filename_ext_len),
|
|
|
4000 Qfile_name);
|
|
0
|
4001 write (listdesc, filename_ext, filename_ext_len);
|
|
|
4002 }
|
|
|
4003 write (listdesc, "\n", 1);
|
|
|
4004 write (listdesc, auto_save_file_name_ext,
|
|
|
4005 auto_save_file_name_ext_len);
|
|
|
4006 write (listdesc, "\n", 1);
|
|
|
4007 }
|
|
|
4008
|
|
110
|
4009 /* dmoore - In a bad scenario we've set b=XBUFFER(buf)
|
|
|
4010 based on values in Vbuffer_alist. auto_save_1 may
|
|
|
4011 cause lisp handlers to run. Those handlers may kill
|
|
|
4012 the buffer and then GC. Since the buffer is killed,
|
|
|
4013 it's no longer in Vbuffer_alist so it might get reaped
|
|
|
4014 by the GC. We also need to protect tail. */
|
|
|
4015 /* #### There is probably a lot of other code which has
|
|
|
4016 pointers into buffers which may get blown away by
|
|
|
4017 handlers. */
|
|
|
4018 {
|
|
169
|
4019 struct gcpro ngcpro1, ngcpro2;
|
|
|
4020 NGCPRO2 (buf, tail);
|
|
110
|
4021 condition_case_1 (Qt,
|
|
|
4022 auto_save_1, Qnil,
|
|
|
4023 auto_save_error, Qnil);
|
|
169
|
4024 NUNGCPRO;
|
|
110
|
4025 }
|
|
|
4026 /* Handler killed our saved current-buffer! Pick any. */
|
|
|
4027 if (!BUFFER_LIVE_P (XBUFFER (old)))
|
|
|
4028 XSETBUFFER (old, current_buffer);
|
|
|
4029
|
|
|
4030 set_buffer_internal (XBUFFER (old));
|
|
0
|
4031 auto_saved++;
|
|
151
|
4032
|
|
110
|
4033 /* Handler killed their own buffer! */
|
|
|
4034 if (!BUFFER_LIVE_P(b))
|
|
|
4035 continue;
|
|
|
4036
|
|
0
|
4037 b->auto_save_modified = BUF_MODIFF (b);
|
|
272
|
4038 b->saved_size = make_int (BUF_SIZE (b));
|
|
0
|
4039 EMACS_GET_TIME (after_time);
|
|
|
4040 /* If auto-save took more than 60 seconds,
|
|
|
4041 assume it was an NFS failure that got a timeout. */
|
|
|
4042 if (EMACS_SECS (after_time) - EMACS_SECS (before_time) > 60)
|
|
|
4043 b->auto_save_failure_time = EMACS_SECS (after_time);
|
|
|
4044 }
|
|
|
4045 }
|
|
|
4046 }
|
|
|
4047
|
|
|
4048 /* Prevent another auto save till enough input events come in. */
|
|
|
4049 if (auto_saved)
|
|
|
4050 record_auto_save ();
|
|
|
4051
|
|
|
4052 /* If we didn't save anything into the listfile, remove the old
|
|
|
4053 one because nothing needed to be auto-saved. Do this afterwards
|
|
|
4054 rather than before in case we get a crash attempting to autosave
|
|
|
4055 (in that case we'd still want the old one around). */
|
|
398
|
4056 if (listdesc < 0 && !auto_saved && STRINGP (listfile))
|
|
16
|
4057 unlink ((char *) XSTRING_DATA (listfile));
|
|
0
|
4058
|
|
|
4059 /* Show "...done" only if the echo area would otherwise be empty. */
|
|
|
4060 if (auto_saved && NILP (no_message)
|
|
|
4061 && NILP (clear_echo_area (selected_frame (), Qauto_saving, 0)))
|
|
|
4062 {
|
|
398
|
4063 static const unsigned char *msg
|
|
|
4064 = (const unsigned char *)"Auto-saving...done";
|
|
0
|
4065 echo_area_message (selected_frame (), msg, Qnil, 0,
|
|
398
|
4066 strlen ((const char *) msg), Qauto_saving);
|
|
0
|
4067 }
|
|
|
4068
|
|
|
4069 Vquit_flag = oquit;
|
|
|
4070
|
|
|
4071 RETURN_UNGCPRO (unbind_to (speccount, Qnil));
|
|
|
4072 }
|
|
|
4073
|
|
20
|
4074 DEFUN ("set-buffer-auto-saved", Fset_buffer_auto_saved, 0, 0, 0, /*
|
|
0
|
4075 Mark current buffer as auto-saved with its current text.
|
|
|
4076 No auto-save file will be written until the buffer changes again.
|
|
20
|
4077 */
|
|
|
4078 ())
|
|
0
|
4079 {
|
|
|
4080 current_buffer->auto_save_modified = BUF_MODIFF (current_buffer);
|
|
272
|
4081 current_buffer->saved_size = make_int (BUF_SIZE (current_buffer));
|
|
0
|
4082 current_buffer->auto_save_failure_time = -1;
|
|
|
4083 return Qnil;
|
|
|
4084 }
|
|
|
4085
|
|
20
|
4086 DEFUN ("clear-buffer-auto-save-failure", Fclear_buffer_auto_save_failure, 0, 0, 0, /*
|
|
0
|
4087 Clear any record of a recent auto-save failure in the current buffer.
|
|
20
|
4088 */
|
|
|
4089 ())
|
|
0
|
4090 {
|
|
|
4091 current_buffer->auto_save_failure_time = -1;
|
|
|
4092 return Qnil;
|
|
|
4093 }
|
|
|
4094
|
|
20
|
4095 DEFUN ("recent-auto-save-p", Frecent_auto_save_p, 0, 0, 0, /*
|
|
0
|
4096 Return t if buffer has been auto-saved since last read in or saved.
|
|
20
|
4097 */
|
|
|
4098 ())
|
|
0
|
4099 {
|
|
|
4100 return (BUF_SAVE_MODIFF (current_buffer) <
|
|
|
4101 current_buffer->auto_save_modified) ? Qt : Qnil;
|
|
|
4102 }
|
|
|
4103
|
|
|
4104
|
|
|
4105 /************************************************************************/
|
|
|
4106 /* initialization */
|
|
|
4107 /************************************************************************/
|
|
|
4108
|
|
|
4109 void
|
|
|
4110 syms_of_fileio (void)
|
|
|
4111 {
|
|
|
4112 defsymbol (&Qexpand_file_name, "expand-file-name");
|
|
|
4113 defsymbol (&Qfile_truename, "file-truename");
|
|
|
4114 defsymbol (&Qsubstitute_in_file_name, "substitute-in-file-name");
|
|
|
4115 defsymbol (&Qdirectory_file_name, "directory-file-name");
|
|
|
4116 defsymbol (&Qfile_name_directory, "file-name-directory");
|
|
|
4117 defsymbol (&Qfile_name_nondirectory, "file-name-nondirectory");
|
|
|
4118 defsymbol (&Qunhandled_file_name_directory, "unhandled-file-name-directory");
|
|
|
4119 defsymbol (&Qfile_name_as_directory, "file-name-as-directory");
|
|
|
4120 defsymbol (&Qcopy_file, "copy-file");
|
|
|
4121 defsymbol (&Qmake_directory_internal, "make-directory-internal");
|
|
|
4122 defsymbol (&Qdelete_directory, "delete-directory");
|
|
|
4123 defsymbol (&Qdelete_file, "delete-file");
|
|
|
4124 defsymbol (&Qrename_file, "rename-file");
|
|
|
4125 defsymbol (&Qadd_name_to_file, "add-name-to-file");
|
|
|
4126 defsymbol (&Qmake_symbolic_link, "make-symbolic-link");
|
|
|
4127 defsymbol (&Qfile_exists_p, "file-exists-p");
|
|
|
4128 defsymbol (&Qfile_executable_p, "file-executable-p");
|
|
|
4129 defsymbol (&Qfile_readable_p, "file-readable-p");
|
|
|
4130 defsymbol (&Qfile_symlink_p, "file-symlink-p");
|
|
|
4131 defsymbol (&Qfile_writable_p, "file-writable-p");
|
|
|
4132 defsymbol (&Qfile_directory_p, "file-directory-p");
|
|
|
4133 defsymbol (&Qfile_regular_p, "file-regular-p");
|
|
|
4134 defsymbol (&Qfile_accessible_directory_p, "file-accessible-directory-p");
|
|
|
4135 defsymbol (&Qfile_modes, "file-modes");
|
|
|
4136 defsymbol (&Qset_file_modes, "set-file-modes");
|
|
|
4137 defsymbol (&Qfile_newer_than_file_p, "file-newer-than-file-p");
|
|
|
4138 defsymbol (&Qinsert_file_contents, "insert-file-contents");
|
|
|
4139 defsymbol (&Qwrite_region, "write-region");
|
|
|
4140 defsymbol (&Qverify_visited_file_modtime, "verify-visited-file-modtime");
|
|
|
4141 defsymbol (&Qset_visited_file_modtime, "set-visited-file-modtime");
|
|
|
4142 defsymbol (&Qcar_less_than_car, "car-less-than-car"); /* Vomitous! */
|
|
|
4143
|
|
|
4144 defsymbol (&Qauto_save_hook, "auto-save-hook");
|
|
|
4145 defsymbol (&Qauto_save_error, "auto-save-error");
|
|
|
4146 defsymbol (&Qauto_saving, "auto-saving");
|
|
|
4147
|
|
|
4148 defsymbol (&Qformat_decode, "format-decode");
|
|
|
4149 defsymbol (&Qformat_annotate_function, "format-annotate-function");
|
|
|
4150
|
|
|
4151 defsymbol (&Qcompute_buffer_file_truename, "compute-buffer-file-truename");
|
|
|
4152 deferror (&Qfile_error, "file-error", "File error", Qio_error);
|
|
|
4153 deferror (&Qfile_already_exists, "file-already-exists",
|
|
|
4154 "File already exists", Qfile_error);
|
|
|
4155
|
|
20
|
4156 DEFSUBR (Ffind_file_name_handler);
|
|
|
4157
|
|
|
4158 DEFSUBR (Ffile_name_directory);
|
|
|
4159 DEFSUBR (Ffile_name_nondirectory);
|
|
|
4160 DEFSUBR (Funhandled_file_name_directory);
|
|
|
4161 DEFSUBR (Ffile_name_as_directory);
|
|
|
4162 DEFSUBR (Fdirectory_file_name);
|
|
|
4163 DEFSUBR (Fmake_temp_name);
|
|
|
4164 DEFSUBR (Fexpand_file_name);
|
|
|
4165 DEFSUBR (Ffile_truename);
|
|
|
4166 DEFSUBR (Fsubstitute_in_file_name);
|
|
|
4167 DEFSUBR (Fcopy_file);
|
|
|
4168 DEFSUBR (Fmake_directory_internal);
|
|
|
4169 DEFSUBR (Fdelete_directory);
|
|
|
4170 DEFSUBR (Fdelete_file);
|
|
|
4171 DEFSUBR (Frename_file);
|
|
|
4172 DEFSUBR (Fadd_name_to_file);
|
|
|
4173 DEFSUBR (Fmake_symbolic_link);
|
|
0
|
4174 #ifdef HPUX_NET
|
|
20
|
4175 DEFSUBR (Fsysnetunam);
|
|
0
|
4176 #endif /* HPUX_NET */
|
|
20
|
4177 DEFSUBR (Ffile_name_absolute_p);
|
|
|
4178 DEFSUBR (Ffile_exists_p);
|
|
|
4179 DEFSUBR (Ffile_executable_p);
|
|
|
4180 DEFSUBR (Ffile_readable_p);
|
|
|
4181 DEFSUBR (Ffile_writable_p);
|
|
|
4182 DEFSUBR (Ffile_symlink_p);
|
|
|
4183 DEFSUBR (Ffile_directory_p);
|
|
|
4184 DEFSUBR (Ffile_accessible_directory_p);
|
|
|
4185 DEFSUBR (Ffile_regular_p);
|
|
|
4186 DEFSUBR (Ffile_modes);
|
|
|
4187 DEFSUBR (Fset_file_modes);
|
|
|
4188 DEFSUBR (Fset_default_file_modes);
|
|
|
4189 DEFSUBR (Fdefault_file_modes);
|
|
|
4190 DEFSUBR (Funix_sync);
|
|
|
4191 DEFSUBR (Ffile_newer_than_file_p);
|
|
|
4192 DEFSUBR (Finsert_file_contents_internal);
|
|
|
4193 DEFSUBR (Fwrite_region_internal);
|
|
|
4194 DEFSUBR (Fcar_less_than_car); /* Vomitous! */
|
|
|
4195 DEFSUBR (Fcdr_less_than_cdr); /* Yeah oh yeah bucko .... */
|
|
0
|
4196 #if 0
|
|
20
|
4197 DEFSUBR (Fencrypt_string);
|
|
|
4198 DEFSUBR (Fdecrypt_string);
|
|
0
|
4199 #endif
|
|
20
|
4200 DEFSUBR (Fverify_visited_file_modtime);
|
|
|
4201 DEFSUBR (Fclear_visited_file_modtime);
|
|
|
4202 DEFSUBR (Fvisited_file_modtime);
|
|
|
4203 DEFSUBR (Fset_visited_file_modtime);
|
|
|
4204
|
|
|
4205 DEFSUBR (Fdo_auto_save);
|
|
|
4206 DEFSUBR (Fset_buffer_auto_saved);
|
|
|
4207 DEFSUBR (Fclear_buffer_auto_save_failure);
|
|
|
4208 DEFSUBR (Frecent_auto_save_p);
|
|
0
|
4209 }
|
|
|
4210
|
|
|
4211 void
|
|
|
4212 vars_of_fileio (void)
|
|
|
4213 {
|
|
|
4214 DEFVAR_LISP ("auto-save-file-format", &Vauto_save_file_format /*
|
|
|
4215 *Format in which to write auto-save files.
|
|
|
4216 Should be a list of symbols naming formats that are defined in `format-alist'.
|
|
|
4217 If it is t, which is the default, auto-save files are written in the
|
|
|
4218 same format as a regular save would use.
|
|
|
4219 */ );
|
|
|
4220 Vauto_save_file_format = Qt;
|
|
|
4221
|
|
|
4222 DEFVAR_LISP ("file-name-handler-alist", &Vfile_name_handler_alist /*
|
|
|
4223 *Alist of elements (REGEXP . HANDLER) for file names handled specially.
|
|
|
4224 If a file name matches REGEXP, then all I/O on that file is done by calling
|
|
|
4225 HANDLER.
|
|
|
4226
|
|
|
4227 The first argument given to HANDLER is the name of the I/O primitive
|
|
|
4228 to be handled; the remaining arguments are the arguments that were
|
|
|
4229 passed to that primitive. For example, if you do
|
|
|
4230 (file-exists-p FILENAME)
|
|
|
4231 and FILENAME is handled by HANDLER, then HANDLER is called like this:
|
|
|
4232 (funcall HANDLER 'file-exists-p FILENAME)
|
|
|
4233 The function `find-file-name-handler' checks this list for a handler
|
|
|
4234 for its argument.
|
|
|
4235 */ );
|
|
|
4236 Vfile_name_handler_alist = Qnil;
|
|
|
4237
|
|
|
4238 DEFVAR_LISP ("after-insert-file-functions", &Vafter_insert_file_functions /*
|
|
|
4239 A list of functions to be called at the end of `insert-file-contents'.
|
|
|
4240 Each is passed one argument, the number of bytes inserted. It should return
|
|
|
4241 the new byte count, and leave point the same. If `insert-file-contents' is
|
|
|
4242 intercepted by a handler from `file-name-handler-alist', that handler is
|
|
|
4243 responsible for calling the after-insert-file-functions if appropriate.
|
|
|
4244 */ );
|
|
|
4245 Vafter_insert_file_functions = Qnil;
|
|
|
4246
|
|
|
4247 DEFVAR_LISP ("write-region-annotate-functions",
|
|
|
4248 &Vwrite_region_annotate_functions /*
|
|
|
4249 A list of functions to be called at the start of `write-region'.
|
|
183
|
4250 Each is passed two arguments, START and END, as for `write-region'.
|
|
0
|
4251 It should return a list of pairs (POSITION . STRING) of strings to be
|
|
|
4252 effectively inserted at the specified positions of the file being written
|
|
|
4253 \(1 means to insert before the first byte written). The POSITIONs must be
|
|
|
4254 sorted into increasing order. If there are several functions in the list,
|
|
|
4255 the several lists are merged destructively.
|
|
|
4256 */ );
|
|
|
4257 Vwrite_region_annotate_functions = Qnil;
|
|
|
4258
|
|
|
4259 DEFVAR_LISP ("write-region-annotations-so-far",
|
|
|
4260 &Vwrite_region_annotations_so_far /*
|
|
|
4261 When an annotation function is called, this holds the previous annotations.
|
|
|
4262 These are the annotations made by other annotation functions
|
|
|
4263 that were already called. See also `write-region-annotate-functions'.
|
|
|
4264 */ );
|
|
|
4265 Vwrite_region_annotations_so_far = Qnil;
|
|
|
4266
|
|
|
4267 DEFVAR_LISP ("inhibit-file-name-handlers", &Vinhibit_file_name_handlers /*
|
|
|
4268 A list of file name handlers that temporarily should not be used.
|
|
|
4269 This applies only to the operation `inhibit-file-name-operation'.
|
|
|
4270 */ );
|
|
|
4271 Vinhibit_file_name_handlers = Qnil;
|
|
|
4272
|
|
|
4273 DEFVAR_LISP ("inhibit-file-name-operation", &Vinhibit_file_name_operation /*
|
|
|
4274 The operation for which `inhibit-file-name-handlers' is applicable.
|
|
|
4275 */ );
|
|
|
4276 Vinhibit_file_name_operation = Qnil;
|
|
|
4277
|
|
|
4278 DEFVAR_LISP ("auto-save-list-file-name", &Vauto_save_list_file_name /*
|
|
|
4279 File name in which we write a list of all auto save file names.
|
|
|
4280 */ );
|
|
|
4281 Vauto_save_list_file_name = Qnil;
|
|
|
4282
|
|
|
4283 DEFVAR_BOOL ("disable-auto-save-when-buffer-shrinks",
|
|
|
4284 &disable_auto_save_when_buffer_shrinks /*
|
|
|
4285 If non-nil, auto-saving is disabled when a buffer shrinks too much.
|
|
|
4286 This is to prevent you from losing your edits if you accidentally
|
|
|
4287 delete a large chunk of the buffer and don't notice it until too late.
|
|
|
4288 Saving the buffer normally turns auto-save back on.
|
|
|
4289 */ );
|
|
|
4290 disable_auto_save_when_buffer_shrinks = 1;
|
|
235
|
4291
|
|
284
|
4292 DEFVAR_LISP ("directory-sep-char", &Vdirectory_sep_char /*
|
|
|
4293 Directory separator character for built-in functions that return file names.
|
|
290
|
4294 The value should be either ?/ or ?\\ (any other value is treated as ?\\).
|
|
284
|
4295 This variable affects the built-in functions only on Windows,
|
|
|
4296 on other platforms, it is initialized so that Lisp code can find out
|
|
|
4297 what the normal separator is.
|
|
211
|
4298 */ );
|
|
410
|
4299 #ifdef WIN32_NATIVE
|
|
398
|
4300 Vdirectory_sep_char = make_char ('\\');
|
|
|
4301 #else
|
|
404
|
4302 Vdirectory_sep_char = make_char ('/');
|
|
398
|
4303 #endif
|
|
404
|
4304
|
|
|
4305 reinit_vars_of_fileio ();
|
|
0
|
4306 }
|
|
404
|
4307
|
|
|
4308 void
|
|
|
4309 reinit_vars_of_fileio (void)
|
|
|
4310 {
|
|
|
4311 /* We want temp_name_rand to be initialized to a value likely to be
|
|
|
4312 unique to the process, not to the executable. The danger is that
|
|
|
4313 two different XEmacs processes using the same binary on different
|
|
|
4314 machines creating temp files in the same directory will be
|
|
|
4315 unlucky enough to have the same pid. If we randomize using
|
|
|
4316 process startup time, then in practice they will be unlikely to
|
|
|
4317 collide. We use the microseconds field so that scripts that start
|
|
|
4318 simultaneous XEmacs processes on multiple machines will have less
|
|
|
4319 chance of collision. */
|
|
|
4320 {
|
|
|
4321 EMACS_TIME thyme;
|
|
|
4322
|
|
|
4323 EMACS_GET_TIME (thyme);
|
|
|
4324 temp_name_rand = (unsigned int) (EMACS_SECS (thyme) ^ EMACS_USECS (thyme));
|
|
|
4325 }
|
|
|
4326 }
|
