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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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70
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36 #ifdef MULE
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37 #include "mule-coding.h"
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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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56 #ifdef WINDOWSNT
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57 #define NOMINMAX 1
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58 #include <windows.h>
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59 #include <stdlib.h>
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60 #include <fcntl.h>
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61 #endif /* not WINDOWSNT */
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62
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63 #ifdef DOS_NT
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64 #define CORRECT_DIR_SEPS(s) \
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65 do { if ('/' == DIRECTORY_SEP) dostounix_filename (s); \
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66 else unixtodos_filename (s); \
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67 } while (0)
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68 /* On Windows, drive letters must be alphabetic - on DOS, the Netware
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69 redirector allows the six letters between 'Z' and 'a' as well. */
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70 #ifdef MSDOS
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71 #define IS_DRIVE(x) ((x) >= 'A' && (x) <= 'z')
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0
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72 #endif
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211
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73 #ifdef WINDOWSNT
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74 #define IS_DRIVE(x) isalpha (x)
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75 #endif
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76 /* Need to lower-case the drive letter, or else expanded
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77 filenames will sometimes compare inequal, because
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78 `expand-file-name' doesn't always down-case the drive letter. */
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79 #define DRIVE_LETTER(x) (tolower (x))
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80 #endif /* DOS_NT */
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0
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81
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82 /* Nonzero during writing of auto-save files */
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83 static int auto_saving;
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84
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85 /* Set by auto_save_1 to mode of original file so Fwrite_region_internal
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86 will create a new file with the same mode as the original */
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87 static int auto_save_mode_bits;
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88
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151
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89 /* Alist of elements (REGEXP . HANDLER) for file names
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0
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90 whose I/O is done with a special handler. */
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91 Lisp_Object Vfile_name_handler_alist;
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92
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93 /* Format for auto-save files */
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94 Lisp_Object Vauto_save_file_format;
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95
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96 /* Lisp functions for translating file formats */
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97 Lisp_Object Qformat_decode, Qformat_annotate_function;
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98
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99 /* Functions to be called to process text properties in inserted file. */
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100 Lisp_Object Vafter_insert_file_functions;
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101
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102 /* Functions to be called to create text property annotations for file. */
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103 Lisp_Object Vwrite_region_annotate_functions;
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104
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105 /* During build_annotations, each time an annotation function is called,
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106 this holds the annotations made by the previous functions. */
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107 Lisp_Object Vwrite_region_annotations_so_far;
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108
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109 /* File name in which we write a list of all our auto save files. */
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110 Lisp_Object Vauto_save_list_file_name;
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111
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112 int disable_auto_save_when_buffer_shrinks;
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113
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114 Lisp_Object Qfile_name_handler_alist;
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115
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211
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116 #ifdef DOS_NT
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117 /* Until we can figure out how to deal with the functions in this file in
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118 a civilized fashion, this will remain #ifdef'ed out. -slb */
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119 /* Syncing with FSF 19.34.6 note: although labelled as NT-specific, these
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120 two lisp variables are compiled in even when not defined(DOS_NT).
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121 Need to check if we should bracket them between #ifdef's.
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122 --marcpa */
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123 /* On NT, specifies the directory separator character, used (eg.) when
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124 expanding file names. This can be bound to / or \.
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125
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126 This needs to be initialized statically, because file name functions
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127 are called during initialization. */
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128 Lisp_Object Vdirectory_sep_char = '/';
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129
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130 /* For the benefit of backwards compatability with earlier versions of
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131 Emacs on DOS_NT, provide a way to disable the REPLACE option support
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132 in insert-file-contents. */
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133 Lisp_Object Vinsert_file_contents_allow_replace;
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134 #endif /* DOS_NT */
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135
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0
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136 /* These variables describe handlers that have "already" had a chance
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137 to handle the current operation.
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138
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139 Vinhibit_file_name_handlers is a list of file name handlers.
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140 Vinhibit_file_name_operation is the operation being handled.
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141 If we try to handle that operation, we ignore those handlers. */
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142
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143 static Lisp_Object Vinhibit_file_name_handlers;
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144 static Lisp_Object Vinhibit_file_name_operation;
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145
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146 Lisp_Object Qfile_error, Qfile_already_exists;
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147
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148 Lisp_Object Qauto_save_hook;
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149 Lisp_Object Qauto_save_error;
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150 Lisp_Object Qauto_saving;
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151
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152 Lisp_Object Qcar_less_than_car;
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153
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154 Lisp_Object Qcompute_buffer_file_truename;
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155
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156 /* signal a file error when errno contains a meaningful value. */
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157
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158 DOESNT_RETURN
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159 report_file_error (CONST char *string, Lisp_Object data)
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160 {
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114
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161 /* #### dmoore - This uses current_buffer, better make sure no one
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162 has GC'd the current buffer. File handlers are giving me a headache
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163 maybe I'll just always protect current_buffer around all of those
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164 calls. */
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165
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0
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166 signal_error (Qfile_error,
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167 Fcons (build_translated_string (string),
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151
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168 Fcons (lisp_strerror (errno), data)));
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0
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169 }
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170
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171 void
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172 maybe_report_file_error (CONST char *string, Lisp_Object data,
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173 Lisp_Object class, Error_behavior errb)
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174 {
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175 /* Optimization: */
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176 if (ERRB_EQ (errb, ERROR_ME_NOT))
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177 return;
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178
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179 maybe_signal_error (Qfile_error,
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180 Fcons (build_translated_string (string),
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151
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181 Fcons (lisp_strerror (errno), data)),
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0
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182 class, errb);
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183 }
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184
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185 /* signal a file error when errno does not contain a meaningful value. */
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186
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187 DOESNT_RETURN
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188 signal_file_error (CONST char *string, Lisp_Object data)
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189 {
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190 signal_error (Qfile_error,
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191 list2 (build_translated_string (string), data));
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192 }
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193
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194 void
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195 maybe_signal_file_error (CONST char *string, Lisp_Object data,
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196 Lisp_Object class, Error_behavior errb)
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197 {
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198 /* Optimization: */
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199 if (ERRB_EQ (errb, ERROR_ME_NOT))
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200 return;
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201 maybe_signal_error (Qfile_error,
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202 list2 (build_translated_string (string), data),
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203 class, errb);
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204 }
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205
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206 DOESNT_RETURN
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207 signal_double_file_error (CONST char *string1, CONST char *string2,
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208 Lisp_Object data)
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209 {
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210 signal_error (Qfile_error,
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211 list3 (build_translated_string (string1),
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212 build_translated_string (string2),
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213 data));
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214 }
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215
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216 void
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217 maybe_signal_double_file_error (CONST char *string1, CONST char *string2,
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218 Lisp_Object data, Lisp_Object class,
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219 Error_behavior errb)
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220 {
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221 /* Optimization: */
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222 if (ERRB_EQ (errb, ERROR_ME_NOT))
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223 return;
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224 maybe_signal_error (Qfile_error,
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225 list3 (build_translated_string (string1),
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226 build_translated_string (string2),
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227 data),
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228 class, errb);
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229 }
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230
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231 DOESNT_RETURN
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232 signal_double_file_error_2 (CONST char *string1, CONST char *string2,
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233 Lisp_Object data1, Lisp_Object data2)
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234 {
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235 signal_error (Qfile_error,
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151
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236 list4 (build_translated_string (string1),
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0
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237 build_translated_string (string2),
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238 data1, data2));
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239 }
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240
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241 void
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242 maybe_signal_double_file_error_2 (CONST char *string1, CONST char *string2,
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243 Lisp_Object data1, Lisp_Object data2,
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244 Lisp_Object class, Error_behavior errb)
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245 {
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246 /* Optimization: */
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247 if (ERRB_EQ (errb, ERROR_ME_NOT))
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248 return;
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249 maybe_signal_error (Qfile_error,
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151
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250 list4 (build_translated_string (string1),
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0
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251 build_translated_string (string2),
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252 data1, data2),
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253 class, errb);
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254 }
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255
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151
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256
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257 /* Just like strerror(3), except return a lisp string instead of char *.
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258 The string needs to be converted since it may be localized.
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259 Perhaps this should use strerror-coding-system instead? */
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260 Lisp_Object
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261 lisp_strerror (int errnum)
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262 {
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263 return build_ext_string (strerror (errnum), FORMAT_NATIVE);
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264 }
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265
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0
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266 static Lisp_Object
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267 close_file_unwind (Lisp_Object fd)
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268 {
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269 if (CONSP (fd))
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270 {
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271 if (INTP (XCAR (fd)))
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272 close (XINT (XCAR (fd)));
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273
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274 free_cons (XCONS (fd));
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275 }
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276 else
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277 close (XINT (fd));
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278
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279 return Qnil;
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280 }
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281
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282 static Lisp_Object
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283 close_stream_unwind (Lisp_Object stream)
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284 {
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285 Lstream_close (XLSTREAM (stream));
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286 return Qnil;
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287 }
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288
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289 /* Restore point, having saved it as a marker. */
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290
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291 static Lisp_Object
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292 restore_point_unwind (Lisp_Object point_marker)
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293 {
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294 BUF_SET_PT (current_buffer, marker_position (point_marker));
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173
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295 return Fset_marker (point_marker, Qnil, Qnil);
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0
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296 }
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297
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298 /* Versions of read() and write() that allow quitting out of the actual
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299 I/O. We don't use immediate_quit (i.e. direct longjmp() out of the
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300 signal handler) because that's way too losing.
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301
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302 (#### Actually, longjmp()ing out of the signal handler may not be
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303 as losing as I thought. See sys_do_signal() in sysdep.c.)
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304
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305 Solaris include files declare the return value as ssize_t.
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306 Is that standard? */
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307 int
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308 read_allowing_quit (int fildes, void *buf, unsigned int nbyte)
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309 {
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310 int nread;
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311 QUIT;
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312
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313 nread = sys_read_1 (fildes, buf, nbyte, 1);
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314 return nread;
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315 }
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316
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317 int
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318 write_allowing_quit (int fildes, CONST void *buf, unsigned int nbyte)
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319 {
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320 int nread;
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321
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322 QUIT;
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323 nread = sys_write_1 (fildes, buf, nbyte, 1);
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324 return nread;
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325 }
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326
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327
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328 Lisp_Object Qexpand_file_name;
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329 Lisp_Object Qfile_truename;
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330 Lisp_Object Qsubstitute_in_file_name;
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331 Lisp_Object Qdirectory_file_name;
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332 Lisp_Object Qfile_name_directory;
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333 Lisp_Object Qfile_name_nondirectory;
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334 Lisp_Object Qunhandled_file_name_directory;
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335 Lisp_Object Qfile_name_as_directory;
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336 Lisp_Object Qcopy_file;
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337 Lisp_Object Qmake_directory_internal;
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338 Lisp_Object Qdelete_directory;
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339 Lisp_Object Qdelete_file;
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340 Lisp_Object Qrename_file;
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341 Lisp_Object Qadd_name_to_file;
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342 Lisp_Object Qmake_symbolic_link;
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343 Lisp_Object Qfile_exists_p;
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344 Lisp_Object Qfile_executable_p;
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345 Lisp_Object Qfile_readable_p;
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346 Lisp_Object Qfile_symlink_p;
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347 Lisp_Object Qfile_writable_p;
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348 Lisp_Object Qfile_directory_p;
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349 Lisp_Object Qfile_regular_p;
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350 Lisp_Object Qfile_accessible_directory_p;
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351 Lisp_Object Qfile_modes;
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352 Lisp_Object Qset_file_modes;
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353 Lisp_Object Qfile_newer_than_file_p;
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354 Lisp_Object Qinsert_file_contents;
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355 Lisp_Object Qwrite_region;
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356 Lisp_Object Qverify_visited_file_modtime;
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357 Lisp_Object Qset_visited_file_modtime;
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358 Lisp_Object Qset_buffer_modtime;
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359
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360 /* If FILENAME is handled specially on account of its syntax,
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361 return its handler function. Otherwise, return nil. */
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362
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20
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363 DEFUN ("find-file-name-handler", Ffind_file_name_handler, 1, 2, 0, /*
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0
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364 Return FILENAME's handler function for OPERATION, if it has one.
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365 Otherwise, return nil.
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366 A file name is handled if one of the regular expressions in
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367 `file-name-handler-alist' matches it.
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368
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369 If OPERATION equals `inhibit-file-name-operation', then we ignore
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370 any handlers that are members of `inhibit-file-name-handlers',
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371 but we still do run any other handlers. This lets handlers
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372 use the standard functions without calling themselves recursively.
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20
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373 */
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374 (filename, operation))
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0
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375 {
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116
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376 /* This function does not GC */
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0
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377 /* This function must not munge the match data. */
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378 Lisp_Object chain, inhibited_handlers;
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379
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380 CHECK_STRING (filename);
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381
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382 if (EQ (operation, Vinhibit_file_name_operation))
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383 inhibited_handlers = Vinhibit_file_name_handlers;
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384 else
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385 inhibited_handlers = Qnil;
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386
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387 for (chain = Vfile_name_handler_alist; CONSP (chain);
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388 chain = XCDR (chain))
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389 {
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390 Lisp_Object elt = XCAR (chain);
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391 if (CONSP (elt))
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392 {
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393 Lisp_Object string;
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394 string = XCAR (elt);
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395 if (STRINGP (string)
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396 && (fast_lisp_string_match (string, filename) >= 0))
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397 {
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398 Lisp_Object handler = XCDR (elt);
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|
|
399 if (NILP (Fmemq (handler, inhibited_handlers)))
|
|
173
|
400 return handler;
|
|
0
|
401 }
|
|
|
402 }
|
|
|
403 QUIT;
|
|
|
404 }
|
|
|
405 return Qnil;
|
|
|
406 }
|
|
|
407
|
|
|
408 static Lisp_Object
|
|
|
409 call2_check_string (Lisp_Object fn, Lisp_Object arg0, Lisp_Object arg1)
|
|
|
410 {
|
|
116
|
411 /* This function can call lisp */
|
|
0
|
412 Lisp_Object result = call2 (fn, arg0, arg1);
|
|
|
413 CHECK_STRING (result);
|
|
173
|
414 return result;
|
|
0
|
415 }
|
|
|
416
|
|
|
417 static Lisp_Object
|
|
114
|
418 call2_check_string_or_nil (Lisp_Object fn, Lisp_Object arg0, Lisp_Object arg1)
|
|
|
419 {
|
|
116
|
420 /* This function can call lisp */
|
|
114
|
421 Lisp_Object result = call2 (fn, arg0, arg1);
|
|
|
422 if (!NILP (result))
|
|
|
423 CHECK_STRING (result);
|
|
173
|
424 return result;
|
|
114
|
425 }
|
|
|
426
|
|
|
427 static Lisp_Object
|
|
151
|
428 call3_check_string (Lisp_Object fn, Lisp_Object arg0,
|
|
0
|
429 Lisp_Object arg1, Lisp_Object arg2)
|
|
|
430 {
|
|
116
|
431 /* This function can call lisp */
|
|
0
|
432 Lisp_Object result = call3 (fn, arg0, arg1, arg2);
|
|
|
433 CHECK_STRING (result);
|
|
173
|
434 return result;
|
|
0
|
435 }
|
|
|
436
|
|
|
437
|
|
20
|
438 DEFUN ("file-name-directory", Ffile_name_directory, 1, 1, 0, /*
|
|
0
|
439 Return the directory component in file name NAME.
|
|
|
440 Return nil if NAME does not include a directory.
|
|
|
441 Otherwise return a directory spec.
|
|
209
|
442 Given a Unix syntax file name, returns a string ending in slash.
|
|
20
|
443 */
|
|
|
444 (file))
|
|
0
|
445 {
|
|
120
|
446 /* This function can GC. GC checked 1997.04.06. */
|
|
0
|
447 Bufbyte *beg;
|
|
|
448 Bufbyte *p;
|
|
|
449 Lisp_Object handler;
|
|
|
450
|
|
|
451 CHECK_STRING (file);
|
|
|
452
|
|
|
453 /* If the file name has special constructs in it,
|
|
|
454 call the corresponding file handler. */
|
|
|
455 handler = Ffind_file_name_handler (file, Qfile_name_directory);
|
|
|
456 if (!NILP (handler))
|
|
173
|
457 return call2_check_string_or_nil (handler, Qfile_name_directory, file);
|
|
0
|
458
|
|
|
459 #ifdef FILE_SYSTEM_CASE
|
|
|
460 file = FILE_SYSTEM_CASE (file);
|
|
|
461 #endif
|
|
16
|
462 beg = XSTRING_DATA (file);
|
|
|
463 p = beg + XSTRING_LENGTH (file);
|
|
0
|
464
|
|
211
|
465 while (p != beg && !IS_ANY_SEP (p[-1])
|
|
|
466 #ifdef DOS_NT
|
|
|
467 /* only recognise drive specifier at beginning */
|
|
|
468 && !(p[-1] == ':' && p == beg + 2)
|
|
|
469 #endif
|
|
|
470 ) p--;
|
|
0
|
471
|
|
|
472 if (p == beg)
|
|
|
473 return Qnil;
|
|
|
474 #ifdef DOS_NT
|
|
|
475 /* Expansion of "c:" to drive and default directory. */
|
|
|
476 /* (NT does the right thing.) */
|
|
|
477 if (p == beg + 2 && beg[1] == ':')
|
|
|
478 {
|
|
|
479 /* MAXPATHLEN+1 is guaranteed to be enough space for getdefdir. */
|
|
211
|
480 Bufbyte *res = alloca (MAXPATHLEN + 1);
|
|
|
481 if (getdefdir (toupper (*beg) - 'A' + 1, res))
|
|
0
|
482 {
|
|
211
|
483 if (!IS_DIRECTORY_SEP (res[strlen ((char *) res) - 1]))
|
|
0
|
484 strcat ((char *) res, "/");
|
|
|
485 beg = res;
|
|
|
486 p = beg + strlen ((char *) beg);
|
|
|
487 }
|
|
|
488 }
|
|
211
|
489 CORRECT_DIR_SEPS (beg);
|
|
0
|
490 #endif /* DOS_NT */
|
|
|
491 return make_string (beg, p - beg);
|
|
|
492 }
|
|
|
493
|
|
20
|
494 DEFUN ("file-name-nondirectory", Ffile_name_nondirectory, 1, 1, 0, /*
|
|
0
|
495 Return file name NAME sans its directory.
|
|
|
496 For example, in a Unix-syntax file name,
|
|
|
497 this is everything after the last slash,
|
|
|
498 or the entire name if it contains no slash.
|
|
20
|
499 */
|
|
|
500 (file))
|
|
0
|
501 {
|
|
120
|
502 /* This function can GC. GC checked 1997.04.06. */
|
|
0
|
503 Bufbyte *beg, *p, *end;
|
|
|
504 Lisp_Object handler;
|
|
|
505
|
|
|
506 CHECK_STRING (file);
|
|
|
507
|
|
|
508 /* If the file name has special constructs in it,
|
|
|
509 call the corresponding file handler. */
|
|
|
510 handler = Ffind_file_name_handler (file, Qfile_name_nondirectory);
|
|
|
511 if (!NILP (handler))
|
|
173
|
512 return call2_check_string (handler, Qfile_name_nondirectory, file);
|
|
0
|
513
|
|
16
|
514 beg = XSTRING_DATA (file);
|
|
|
515 end = p = beg + XSTRING_LENGTH (file);
|
|
0
|
516
|
|
211
|
517 while (p != beg && !IS_ANY_SEP (p[-1])
|
|
|
518 #ifdef DOS_NT
|
|
|
519 /* only recognise drive specifier at beginning */
|
|
|
520 && !(p[-1] == ':' && p == beg + 2)
|
|
|
521 #endif
|
|
|
522 ) p--;
|
|
0
|
523
|
|
|
524 return make_string (p, end - p);
|
|
|
525 }
|
|
|
526
|
|
20
|
527 DEFUN ("unhandled-file-name-directory", Funhandled_file_name_directory, 1, 1, 0, /*
|
|
0
|
528 Return a directly usable directory name somehow associated with FILENAME.
|
|
|
529 A `directly usable' directory name is one that may be used without the
|
|
|
530 intervention of any file handler.
|
|
|
531 If FILENAME is a directly usable file itself, return
|
|
|
532 (file-name-directory FILENAME).
|
|
|
533 The `call-process' and `start-process' functions use this function to
|
|
|
534 get a current directory to run processes in.
|
|
20
|
535 */
|
|
70
|
536 (filename))
|
|
0
|
537 {
|
|
120
|
538 /* This function can GC. GC checked 1997.04.06. */
|
|
0
|
539 Lisp_Object handler;
|
|
|
540
|
|
|
541 /* If the file name has special constructs in it,
|
|
|
542 call the corresponding file handler. */
|
|
|
543 handler = Ffind_file_name_handler (filename, Qunhandled_file_name_directory);
|
|
|
544 if (!NILP (handler))
|
|
|
545 return call2 (handler, Qunhandled_file_name_directory,
|
|
|
546 filename);
|
|
|
547
|
|
|
548 return Ffile_name_directory (filename);
|
|
|
549 }
|
|
|
550
|
|
|
551
|
|
|
552 static char *
|
|
|
553 file_name_as_directory (char *out, char *in)
|
|
|
554 {
|
|
|
555 int size = strlen (in) - 1;
|
|
|
556
|
|
|
557 strcpy (out, in);
|
|
|
558
|
|
|
559 /* For Unix syntax, Append a slash if necessary */
|
|
|
560 if (!IS_ANY_SEP (out[size]))
|
|
|
561 {
|
|
|
562 out[size + 1] = DIRECTORY_SEP;
|
|
|
563 out[size + 2] = '\0';
|
|
|
564 }
|
|
213
|
565 #ifdef DOS_NT
|
|
|
566 CORRECT_DIR_SEPS (out);
|
|
|
567 #endif
|
|
0
|
568 return out;
|
|
|
569 }
|
|
|
570
|
|
20
|
571 DEFUN ("file-name-as-directory", Ffile_name_as_directory, 1, 1, 0, /*
|
|
0
|
572 Return a string representing file FILENAME interpreted as a directory.
|
|
|
573 This operation exists because a directory is also a file, but its name as
|
|
|
574 a directory is different from its name as a file.
|
|
|
575 The result can be used as the value of `default-directory'
|
|
|
576 or passed as second argument to `expand-file-name'.
|
|
|
577 For a Unix-syntax file name, just appends a slash.
|
|
20
|
578 */
|
|
|
579 (file))
|
|
0
|
580 {
|
|
120
|
581 /* This function can GC. GC checked 1997.04.06. */
|
|
0
|
582 char *buf;
|
|
|
583 Lisp_Object handler;
|
|
|
584
|
|
|
585 CHECK_STRING (file);
|
|
|
586
|
|
|
587 /* If the file name has special constructs in it,
|
|
|
588 call the corresponding file handler. */
|
|
|
589 handler = Ffind_file_name_handler (file, Qfile_name_as_directory);
|
|
|
590 if (!NILP (handler))
|
|
173
|
591 return call2_check_string (handler, Qfile_name_as_directory, file);
|
|
0
|
592
|
|
16
|
593 buf = (char *) alloca (XSTRING_LENGTH (file) + 10);
|
|
0
|
594 return build_string (file_name_as_directory
|
|
16
|
595 (buf, (char *) XSTRING_DATA (file)));
|
|
0
|
596 }
|
|
|
597
|
|
|
598 /*
|
|
|
599 * Convert from directory name to filename.
|
|
211
|
600 * On UNIX, it's simple: just make sure there isn't a terminating /
|
|
0
|
601
|
|
|
602 * Value is nonzero if the string output is different from the input.
|
|
|
603 */
|
|
|
604
|
|
|
605 static int
|
|
|
606 directory_file_name (CONST char *src, char *dst)
|
|
|
607 {
|
|
|
608 long slen;
|
|
|
609
|
|
|
610 slen = strlen (src);
|
|
|
611 /* Process as Unix format: just remove any final slash.
|
|
|
612 But leave "/" unchanged; do not change it to "". */
|
|
|
613 strcpy (dst, src);
|
|
|
614 #ifdef APOLLO
|
|
|
615 /* Handle // as root for apollo's. */
|
|
|
616 if ((slen > 2 && dst[slen - 1] == '/')
|
|
|
617 || (slen > 1 && dst[0] != '/' && dst[slen - 1] == '/'))
|
|
|
618 dst[slen - 1] = 0;
|
|
|
619 #else
|
|
151
|
620 if (slen > 1
|
|
0
|
621 && IS_DIRECTORY_SEP (dst[slen - 1])
|
|
|
622 #ifdef DOS_NT
|
|
|
623 && !IS_ANY_SEP (dst[slen - 2])
|
|
211
|
624 #endif /* DOS_NT */
|
|
0
|
625 )
|
|
|
626 dst[slen - 1] = 0;
|
|
211
|
627 #endif /* APOLLO */
|
|
|
628 #ifdef DOS_NT
|
|
|
629 CORRECT_DIR_SEPS (dst);
|
|
|
630 #endif /* DOS_NT */
|
|
0
|
631 return 1;
|
|
|
632 }
|
|
|
633
|
|
20
|
634 DEFUN ("directory-file-name", Fdirectory_file_name, 1, 1, 0, /*
|
|
0
|
635 Return the file name of the directory named DIR.
|
|
|
636 This is the name of the file that holds the data for the directory DIR.
|
|
|
637 This operation exists because a directory is also a file, but its name as
|
|
|
638 a directory is different from its name as a file.
|
|
|
639 In Unix-syntax, this function just removes the final slash.
|
|
20
|
640 */
|
|
|
641 (directory))
|
|
0
|
642 {
|
|
120
|
643 /* This function can GC. GC checked 1997.04.06. */
|
|
0
|
644 char *buf;
|
|
|
645 Lisp_Object handler;
|
|
|
646
|
|
|
647 CHECK_STRING (directory);
|
|
|
648
|
|
|
649 #if 0 /* #### WTF? */
|
|
|
650 if (NILP (directory))
|
|
|
651 return Qnil;
|
|
|
652 #endif
|
|
|
653
|
|
|
654 /* If the file name has special constructs in it,
|
|
|
655 call the corresponding file handler. */
|
|
|
656 handler = Ffind_file_name_handler (directory, Qdirectory_file_name);
|
|
|
657 if (!NILP (handler))
|
|
173
|
658 return call2_check_string (handler, Qdirectory_file_name, directory);
|
|
16
|
659 buf = (char *) alloca (XSTRING_LENGTH (directory) + 20);
|
|
|
660 directory_file_name ((char *) XSTRING_DATA (directory), buf);
|
|
0
|
661 return build_string (buf);
|
|
|
662 }
|
|
|
663
|
|
20
|
664 DEFUN ("make-temp-name", Fmake_temp_name, 1, 1, 0, /*
|
|
0
|
665 Generate temporary file name (string) starting with PREFIX (a string).
|
|
|
666 The Emacs process number forms part of the result,
|
|
|
667 so there is no danger of generating a name being used by another process.
|
|
20
|
668 */
|
|
|
669 (prefix))
|
|
0
|
670 {
|
|
|
671 CONST char suffix[] = "XXXXXX";
|
|
|
672 Bufbyte *data;
|
|
|
673 Bytecount len;
|
|
|
674 Lisp_Object val;
|
|
|
675
|
|
|
676 CHECK_STRING (prefix);
|
|
16
|
677 len = XSTRING_LENGTH (prefix);
|
|
0
|
678 val = make_uninit_string (len + countof (suffix) - 1);
|
|
16
|
679 data = XSTRING_DATA (val);
|
|
|
680 memcpy (data, XSTRING_DATA (prefix), len);
|
|
0
|
681 memcpy (data + len, suffix, countof (suffix));
|
|
|
682 /* !!#### does mktemp() Mule-encapsulate? */
|
|
|
683 mktemp ((char *) data);
|
|
|
684
|
|
211
|
685 #ifdef DOS_NT
|
|
|
686 CORRECT_DIR_SEPS (XSTRING_DATA (val));
|
|
|
687 #endif /* DOS_NT */
|
|
0
|
688 return val;
|
|
|
689 }
|
|
|
690
|
|
20
|
691 DEFUN ("expand-file-name", Fexpand_file_name, 1, 2, 0, /*
|
|
0
|
692 Convert FILENAME to absolute, and canonicalize it.
|
|
|
693 Second arg DEFAULT is directory to start with if FILENAME is relative
|
|
|
694 (does not start with slash); if DEFAULT is nil or missing,
|
|
|
695 the current buffer's value of default-directory is used.
|
|
151
|
696 Path components that are `.' are removed, and
|
|
0
|
697 path components followed by `..' are removed, along with the `..' itself;
|
|
|
698 note that these simplifications are done without checking the resulting
|
|
|
699 paths in the file system.
|
|
|
700 An initial `~/' expands to your home directory.
|
|
|
701 An initial `~USER/' expands to USER's home directory.
|
|
|
702 See also the function `substitute-in-file-name'.
|
|
20
|
703 */
|
|
173
|
704 (name, default_))
|
|
0
|
705 {
|
|
120
|
706 /* This function can GC. GC checked 1997.04.06. */
|
|
0
|
707 Bufbyte *nm;
|
|
151
|
708
|
|
0
|
709 Bufbyte *newdir, *p, *o;
|
|
|
710 int tlen;
|
|
|
711 Bufbyte *target;
|
|
|
712 struct passwd *pw;
|
|
|
713 #ifdef DOS_NT
|
|
211
|
714 int drive = 0;
|
|
|
715 int collapse_newdir = 1;
|
|
|
716 int length;
|
|
0
|
717 #endif /* DOS_NT */
|
|
|
718 Lisp_Object handler;
|
|
151
|
719
|
|
0
|
720 CHECK_STRING (name);
|
|
|
721
|
|
|
722 /* If the file name has special constructs in it,
|
|
|
723 call the corresponding file handler. */
|
|
|
724 handler = Ffind_file_name_handler (name, Qexpand_file_name);
|
|
|
725 if (!NILP (handler))
|
|
173
|
726 return call3_check_string (handler, Qexpand_file_name, name, default_);
|
|
|
727
|
|
|
728 /* Use the buffer's default-directory if DEFAULT_ is omitted. */
|
|
|
729 if (NILP (default_))
|
|
|
730 default_ = current_buffer->directory;
|
|
|
731 if (NILP (default_)) /* this should be a meaningful error */
|
|
0
|
732 {
|
|
|
733 /* #### If we had a minibuffer-only frame up then current_buffer
|
|
|
734 is likely to not have a directory setting. We should
|
|
|
735 probably redo things to make sure that current_buffer stays
|
|
|
736 set to something sensible. */
|
|
|
737 if (!preparing_for_armageddon)
|
|
|
738 signal_simple_error ("default-directory is not set",
|
|
|
739 make_buffer (current_buffer));
|
|
|
740 }
|
|
|
741 else
|
|
173
|
742 CHECK_STRING (default_);
|
|
|
743
|
|
|
744 if (!NILP (default_))
|
|
0
|
745 {
|
|
114
|
746 struct gcpro gcpro1;
|
|
|
747
|
|
173
|
748 GCPRO1 (default_); /* might be current_buffer->directory */
|
|
|
749 handler = Ffind_file_name_handler (default_, Qexpand_file_name);
|
|
114
|
750 UNGCPRO;
|
|
0
|
751 if (!NILP (handler))
|
|
173
|
752 return call3 (handler, Qexpand_file_name, name, default_);
|
|
0
|
753 }
|
|
|
754
|
|
173
|
755 /* Make sure DEFAULT_ is properly expanded.
|
|
0
|
756 It would be better to do this down below where we actually use
|
|
173
|
757 default_. Unfortunately, calling Fexpand_file_name recursively
|
|
0
|
758 could invoke GC, and the strings might be relocated. This would
|
|
|
759 be annoying because we have pointers into strings lying around
|
|
|
760 that would need adjusting, and people would add new pointers to
|
|
|
761 the code and forget to adjust them, resulting in intermittent bugs.
|
|
|
762 Putting this call here avoids all that crud.
|
|
|
763
|
|
|
764 The EQ test avoids infinite recursion. */
|
|
173
|
765 if (! NILP(default_) && !EQ (default_, name)
|
|
211
|
766 /* Save time in some common cases - as long as default_directory
|
|
|
767 is not relative, it can be canonicalized with name below (if it
|
|
|
768 is needed at all) without requiring it to be expanded now. */
|
|
173
|
769 && ! (XSTRING_LENGTH (default_) >= 3
|
|
211
|
770 #ifdef DOS_NT
|
|
|
771 /* Detect MSDOS file names with drive specifiers. */
|
|
|
772 && (IS_DRIVE (XSTRING_BYTE (default_, 0))
|
|
|
773 && (IS_DEVICE_SEP (XSTRING_BYTE (default_, 1))
|
|
213
|
774 && IS_DIRECTORY_SEP (XSTRING_BYTE (default_, 2)))))
|
|
211
|
775 #ifdef WINDOWSNT
|
|
|
776 /* Detect Windows file names in UNC format. */
|
|
|
777 && ! (XSTRING_LENGTH (default_) >= 2
|
|
|
778 && IS_DIRECTORY_SEP (XSTRING_BYTE (default_, 0))
|
|
|
779 && IS_DIRECTORY_SEP (XSTRING_BYTE (default_, 1)))
|
|
|
780 #endif
|
|
|
781 #else /* not DOS_NT */
|
|
|
782 /* Detect Unix absolute file names (/... alone is not absolute on
|
|
|
783 DOS or Windows). */
|
|
173
|
784 && (IS_DIRECTORY_SEP (XSTRING_BYTE (default_, 0))
|
|
211
|
785 || IS_DEVICE_SEP (XSTRING_BYTE (default_, 1))))
|
|
|
786 #endif /* not DOS_NT */
|
|
|
787 )
|
|
0
|
788 {
|
|
|
789 struct gcpro gcpro1;
|
|
|
790
|
|
173
|
791 GCPRO1 (default_); /* may be current_buffer->directory */
|
|
|
792 default_ = Fexpand_file_name (default_, Qnil);
|
|
0
|
793 UNGCPRO;
|
|
|
794 }
|
|
|
795
|
|
|
796 #ifdef FILE_SYSTEM_CASE
|
|
|
797 name = FILE_SYSTEM_CASE (name);
|
|
|
798 #endif
|
|
|
799
|
|
114
|
800 /* #### dmoore - this is ugly, clean this up. Looks like nm
|
|
|
801 pointing into name should be safe during all of this, though. */
|
|
16
|
802 nm = XSTRING_DATA (name);
|
|
151
|
803
|
|
0
|
804 #ifdef DOS_NT
|
|
211
|
805 /* We will force directory separators to be either all \ or /, so make
|
|
|
806 a local copy to modify, even if there ends up being no change. */
|
|
|
807 nm = strcpy (alloca (strlen (nm) + 1), nm);
|
|
|
808
|
|
|
809 /* Find and remove drive specifier if present; this makes nm absolute
|
|
|
810 even if the rest of the name appears to be relative. */
|
|
0
|
811 {
|
|
|
812 Bufbyte *colon = strrchr (nm, ':');
|
|
|
813 if (colon)
|
|
211
|
814 /* Only recognize colon as part of drive specifier if there is a
|
|
|
815 single alphabetic character preceeding the colon (and if the
|
|
|
816 character before the drive letter, if present, is a directory
|
|
|
817 separator); this is to support the remote system syntax used by
|
|
|
818 ange-ftp, and the "po:username" syntax for POP mailboxes. */
|
|
|
819 look_again:
|
|
0
|
820 if (nm == colon)
|
|
|
821 nm++;
|
|
211
|
822 else if (IS_DRIVE (colon[-1])
|
|
|
823 && (colon == nm + 1 || IS_DIRECTORY_SEP (colon[-2])))
|
|
0
|
824 {
|
|
|
825 drive = colon[-1];
|
|
|
826 nm = colon + 1;
|
|
211
|
827 }
|
|
|
828 else
|
|
|
829 {
|
|
|
830 while (--colon >= nm)
|
|
|
831 if (colon[0] == ':')
|
|
|
832 goto look_again;
|
|
151
|
833 }
|
|
0
|
834 }
|
|
211
|
835
|
|
|
836 #ifdef WINDOWSNT
|
|
|
837 /* If we see "c://somedir", we want to strip the first slash after the
|
|
|
838 colon when stripping the drive letter. Otherwise, this expands to
|
|
|
839 "//somedir". */
|
|
|
840 if (drive && IS_DIRECTORY_SEP (nm[0]) && IS_DIRECTORY_SEP (nm[1]))
|
|
|
841 nm++;
|
|
|
842 #endif /* WINDOWSNT */
|
|
0
|
843 #endif /* DOS_NT */
|
|
|
844
|
|
189
|
845 /* We *don't* want to handle // and /~ that way. */
|
|
|
846 #if 0
|
|
0
|
847 /* Handle // and /~ in middle of file name
|
|
|
848 by discarding everything through the first / of that sequence. */
|
|
|
849 p = nm;
|
|
|
850 while (*p)
|
|
|
851 {
|
|
|
852 /* Since we know the path is absolute, we can assume that each
|
|
|
853 element starts with a "/". */
|
|
|
854
|
|
|
855 /* "//" anywhere isn't necessarily hairy; we just start afresh
|
|
|
856 with the second slash. */
|
|
|
857 if (IS_DIRECTORY_SEP (p[0]) && IS_DIRECTORY_SEP (p[1])
|
|
|
858 #if defined (APOLLO) || defined (WINDOWSNT)
|
|
151
|
859 /* // at start of filename is meaningful on Apollo
|
|
0
|
860 and WindowsNT systems */
|
|
|
861 && nm != p
|
|
|
862 #endif /* APOLLO || WINDOWSNT */
|
|
|
863 )
|
|
|
864 nm = p + 1;
|
|
|
865
|
|
|
866 /* "~" is hairy as the start of any path element. */
|
|
|
867 if (IS_DIRECTORY_SEP (p[0]) && p[1] == '~')
|
|
|
868 nm = p + 1;
|
|
|
869
|
|
|
870 p++;
|
|
|
871 }
|
|
211
|
872
|
|
|
873 #endif /* 0 */
|
|
|
874
|
|
|
875 #ifdef WINDOWSNT
|
|
|
876 /* Discard any previous drive specifier if nm is now in UNC format. */
|
|
|
877 if (IS_DIRECTORY_SEP (nm[0]) && IS_DIRECTORY_SEP (nm[1]))
|
|
|
878 {
|
|
|
879 drive = 0;
|
|
|
880 }
|
|
|
881 #endif /* WINDOWSNT */
|
|
|
882
|
|
|
883 /* If nm is absolute, look for /./ or /../ sequences; if none are
|
|
|
884 found, we can probably return right away. We will avoid allocating
|
|
|
885 a new string if name is already fully expanded. */
|
|
|
886 if (IS_DIRECTORY_SEP (nm[0])
|
|
|
887 #ifdef WINDOWSNT
|
|
|
888 && (drive || IS_DIRECTORY_SEP (nm[1]))
|
|
189
|
889 #endif
|
|
211
|
890 )
|
|
0
|
891 {
|
|
|
892 /* If it turns out that the filename we want to return is just a
|
|
|
893 suffix of FILENAME, we don't need to go through and edit
|
|
|
894 things; we just need to construct a new string using data
|
|
|
895 starting at the middle of FILENAME. If we set lose to a
|
|
|
896 non-zero value, that means we've discovered that we can't do
|
|
|
897 that cool trick. */
|
|
|
898 int lose = 0;
|
|
|
899
|
|
|
900 p = nm;
|
|
|
901 while (*p)
|
|
|
902 {
|
|
|
903 /* Since we know the path is absolute, we can assume that each
|
|
|
904 element starts with a "/". */
|
|
|
905
|
|
|
906 /* "." and ".." are hairy. */
|
|
|
907 if (IS_DIRECTORY_SEP (p[0])
|
|
|
908 && p[1] == '.'
|
|
|
909 && (IS_DIRECTORY_SEP (p[2])
|
|
|
910 || p[2] == 0
|
|
|
911 || (p[2] == '.' && (IS_DIRECTORY_SEP (p[3])
|
|
|
912 || p[3] == 0))))
|
|
|
913 lose = 1;
|
|
|
914 p++;
|
|
|
915 }
|
|
|
916 if (!lose)
|
|
|
917 {
|
|
211
|
918 #ifdef DOS_NT
|
|
|
919 /* Make sure directories are all separated with / or \ as
|
|
|
920 desired, but avoid allocation of a new string when not
|
|
|
921 required. */
|
|
|
922 CORRECT_DIR_SEPS (nm);
|
|
|
923 #ifdef WINDOWSNT
|
|
|
924 if (IS_DIRECTORY_SEP (nm[1]))
|
|
|
925 {
|
|
|
926 if (strcmp (nm, XSTRING_DATA (name)) != 0)
|
|
|
927 name = build_string (nm);
|
|
|
928 }
|
|
|
929 else
|
|
|
930 #endif
|
|
|
931 /* drive must be set, so this is okay */
|
|
|
932 if (strcmp (nm - 2, XSTRING_DATA (name)) != 0)
|
|
|
933 {
|
|
|
934 name = make_string (nm - 2, p - nm + 2);
|
|
|
935 XSTRING_DATA (name)[0] = DRIVE_LETTER (drive);
|
|
|
936 XSTRING_DATA (name)[1] = ':';
|
|
|
937 }
|
|
|
938 return name;
|
|
|
939 #else /* not DOS_NT */
|
|
|
940 /* Unix */
|
|
16
|
941 if (nm == XSTRING_DATA (name))
|
|
0
|
942 return name;
|
|
|
943 return build_string ((char *) nm);
|
|
211
|
944 #endif /* DOS_NT */
|
|
0
|
945 }
|
|
|
946 }
|
|
|
947
|
|
211
|
948 /* At this point, nm might or might not be an absolute file name. We
|
|
|
949 need to expand ~ or ~user if present, otherwise prefix nm with
|
|
|
950 default_directory if nm is not absolute, and finally collapse /./
|
|
|
951 and /foo/../ sequences.
|
|
|
952
|
|
|
953 We set newdir to be the appropriate prefix if one is needed:
|
|
|
954 - the relevant user directory if nm starts with ~ or ~user
|
|
|
955 - the specified drive's working dir (DOS/NT only) if nm does not
|
|
|
956 start with /
|
|
|
957 - the value of default_directory.
|
|
|
958
|
|
|
959 Note that these prefixes are not guaranteed to be absolute (except
|
|
|
960 for the working dir of a drive). Therefore, to ensure we always
|
|
|
961 return an absolute name, if the final prefix is not absolute we
|
|
|
962 append it to the current working directory. */
|
|
0
|
963
|
|
|
964 newdir = 0;
|
|
|
965
|
|
|
966 if (nm[0] == '~') /* prefix ~ */
|
|
|
967 {
|
|
|
968 if (IS_DIRECTORY_SEP (nm[1])
|
|
|
969 || nm[1] == 0) /* ~ by itself */
|
|
|
970 {
|
|
|
971 if (!(newdir = (Bufbyte *) egetenv ("HOME")))
|
|
|
972 newdir = (Bufbyte *) "";
|
|
211
|
973 /* Syncing with FSF 19.34.6 note: this is not in FSF. Since it is dated 1995,
|
|
|
974 I doubt it is coming from XEmacs. I (#if 0) it but let the code
|
|
|
975 stay there just in case. --marcpa */
|
|
|
976 #if 0
|
|
0
|
977 #ifdef DOS_NT
|
|
|
978 /* Problem when expanding "~\" if HOME is not on current drive.
|
|
|
979 Ulrich Leodolter, Wed Jan 11 10:20:35 1995 */
|
|
|
980 if (newdir[1] == ':')
|
|
|
981 drive = newdir[0];
|
|
|
982 dostounix_filename (newdir);
|
|
183
|
983 #endif /* DOS_NT */
|
|
211
|
984 #endif /* 0 */
|
|
0
|
985 nm++;
|
|
211
|
986 #ifdef DOS_NT
|
|
|
987 collapse_newdir = 0;
|
|
|
988 #endif /* DOS_NT */
|
|
0
|
989 }
|
|
|
990 else /* ~user/filename */
|
|
|
991 {
|
|
209
|
992 for (p = nm; *p && (!IS_DIRECTORY_SEP (*p)); p++);
|
|
0
|
993 o = (Bufbyte *) alloca (p - nm + 1);
|
|
|
994 memcpy (o, (char *) nm, p - nm);
|
|
|
995 o [p - nm] = 0;
|
|
|
996
|
|
211
|
997 /* Syncing with FSF 19.34.6 note: FSF uses getpwnam even on NT, which does
|
|
|
998 not work. The following works only if ~USER names the user who runs
|
|
|
999 this instance of XEmacs. While NT is single-user (for the moment) you
|
|
|
1000 still can have multiple user profiles users defined, each with its
|
|
|
1001 HOME. Therefore, the following should be reworked to handle this case.
|
|
|
1002 --marcpa */
|
|
0
|
1003 #ifdef WINDOWSNT
|
|
195
|
1004 /*
|
|
|
1005 ** Now if the file given is "~foo/file" and HOME="c:/", then we
|
|
|
1006 ** want the file to be named "c:/file" ("~foo" becomes "c:/").
|
|
|
1007 ** The variable o has "~foo", so we can use the length of
|
|
|
1008 ** that string to offset nm. August Hill, 31 Aug 1998.
|
|
|
1009 */
|
|
211
|
1010 newdir = (Bufbyte *) egetenv ("HOME");
|
|
0
|
1011 dostounix_filename (newdir);
|
|
195
|
1012 nm += strlen(o) + 1;
|
|
0
|
1013 #else /* not WINDOWSNT */
|
|
|
1014 /* Jamie reports that getpwnam() can get wedged by SIGIO/SIGALARM
|
|
|
1015 occurring in it. (It can call select()). */
|
|
|
1016 slow_down_interrupts ();
|
|
|
1017 pw = (struct passwd *) getpwnam ((char *) o + 1);
|
|
|
1018 speed_up_interrupts ();
|
|
|
1019 if (pw)
|
|
|
1020 {
|
|
|
1021 newdir = (Bufbyte *) pw -> pw_dir;
|
|
|
1022 nm = p;
|
|
|
1023 }
|
|
|
1024 #endif /* not WINDOWSNT */
|
|
|
1025
|
|
|
1026 /* If we don't find a user of that name, leave the name
|
|
|
1027 unchanged; don't move nm forward to p. */
|
|
|
1028 }
|
|
|
1029 }
|
|
|
1030
|
|
|
1031 #ifdef DOS_NT
|
|
211
|
1032 /* On DOS and Windows, nm is absolute if a drive name was specified;
|
|
|
1033 use the drive's current directory as the prefix if needed. */
|
|
|
1034 if (!newdir && drive)
|
|
|
1035 {
|
|
|
1036 /* Get default directory if needed to make nm absolute. */
|
|
|
1037 if (!IS_DIRECTORY_SEP (nm[0]))
|
|
|
1038 {
|
|
|
1039 newdir = alloca (MAXPATHLEN + 1);
|
|
|
1040 if (!getdefdir (toupper (drive) - 'A' + 1, newdir))
|
|
|
1041 newdir = NULL;
|
|
|
1042 }
|
|
|
1043 if (!newdir)
|
|
|
1044 {
|
|
|
1045 /* Either nm starts with /, or drive isn't mounted. */
|
|
|
1046 newdir = alloca (4);
|
|
|
1047 newdir[0] = DRIVE_LETTER (drive);
|
|
|
1048 newdir[1] = ':';
|
|
|
1049 newdir[2] = '/';
|
|
|
1050 newdir[3] = 0;
|
|
|
1051 }
|
|
|
1052 }
|
|
0
|
1053 #endif /* DOS_NT */
|
|
211
|
1054
|
|
|
1055 /* Finally, if no prefix has been specified and nm is not absolute,
|
|
|
1056 then it must be expanded relative to default_directory. */
|
|
|
1057 if (1
|
|
|
1058 #ifndef DOS_NT
|
|
|
1059 && !IS_ANY_SEP (nm[0])
|
|
|
1060 #endif /* not DOS_NT */
|
|
|
1061 #ifdef WINDOWSNT
|
|
|
1062 && !(IS_DIRECTORY_SEP (nm[0]) && IS_DIRECTORY_SEP (nm[1]))
|
|
|
1063 #endif
|
|
0
|
1064 && !newdir
|
|
173
|
1065 && STRINGP (default_))
|
|
0
|
1066 {
|
|
173
|
1067 newdir = XSTRING_DATA (default_);
|
|
0
|
1068 }
|
|
|
1069
|
|
|
1070 #ifdef DOS_NT
|
|
211
|
1071 if (newdir)
|
|
|
1072 {
|
|
|
1073 /* First ensure newdir is an absolute name. */
|
|
|
1074 if (
|
|
|
1075 /* Detect MSDOS file names with drive specifiers. */
|
|
|
1076 ! (IS_DRIVE (newdir[0])
|
|
|
1077 && IS_DEVICE_SEP (newdir[1]) && IS_DIRECTORY_SEP (newdir[2]))
|
|
|
1078 #ifdef WINDOWSNT
|
|
|
1079 /* Detect Windows file names in UNC format. */
|
|
|
1080 && ! (IS_DIRECTORY_SEP (newdir[0]) && IS_DIRECTORY_SEP (newdir[1]))
|
|
|
1081 #endif
|
|
|
1082 )
|
|
|
1083 {
|
|
|
1084 /* Effectively, let newdir be (expand-file-name newdir cwd).
|
|
|
1085 Because of the admonition against calling expand-file-name
|
|
|
1086 when we have pointers into lisp strings, we accomplish this
|
|
|
1087 indirectly by prepending newdir to nm if necessary, and using
|
|
|
1088 cwd (or the wd of newdir's drive) as the new newdir. */
|
|
|
1089
|
|
|
1090 if (IS_DRIVE (newdir[0]) && newdir[1] == ':')
|
|
|
1091 {
|
|
|
1092 drive = newdir[0];
|
|
|
1093 newdir += 2;
|
|
|
1094 }
|
|
|
1095 if (!IS_DIRECTORY_SEP (nm[0]))
|
|
|
1096 {
|
|
|
1097 char * tmp = alloca (strlen (newdir) + strlen (nm) + 2);
|
|
|
1098 file_name_as_directory (tmp, newdir);
|
|
|
1099 strcat (tmp, nm);
|
|
|
1100 nm = tmp;
|
|
|
1101 }
|
|
|
1102 newdir = alloca (MAXPATHLEN + 1);
|
|
|
1103 if (drive)
|
|
|
1104 {
|
|
|
1105 if (!getdefdir (toupper (drive) - 'A' + 1, newdir))
|
|
|
1106 newdir = "/";
|
|
|
1107 }
|
|
|
1108 else
|
|
|
1109 getwd (newdir);
|
|
|
1110 }
|
|
|
1111
|
|
|
1112 /* Strip off drive name from prefix, if present. */
|
|
|
1113 if (IS_DRIVE (newdir[0]) && newdir[1] == ':')
|
|
|
1114 {
|
|
|
1115 drive = newdir[0];
|
|
|
1116 newdir += 2;
|
|
|
1117 }
|
|
|
1118
|
|
|
1119 /* Keep only a prefix from newdir if nm starts with slash
|
|
|
1120 (//server/share for UNC, nothing otherwise). */
|
|
|
1121 if (IS_DIRECTORY_SEP (nm[0]) && collapse_newdir)
|
|
|
1122 {
|
|
|
1123 #ifdef WINDOWSNT
|
|
|
1124 if (IS_DIRECTORY_SEP (newdir[0]) && IS_DIRECTORY_SEP (newdir[1]))
|
|
|
1125 {
|
|
|
1126 newdir = strcpy (alloca (strlen (newdir) + 1), newdir);
|
|
|
1127 p = newdir + 2;
|
|
|
1128 while (*p && !IS_DIRECTORY_SEP (*p)) p++;
|
|
|
1129 p++;
|
|
|
1130 while (*p && !IS_DIRECTORY_SEP (*p)) p++;
|
|
|
1131 *p = 0;
|
|
|
1132 }
|
|
|
1133 else
|
|
|
1134 #endif
|
|
|
1135 newdir = "";
|
|
|
1136 }
|
|
|
1137 }
|
|
0
|
1138 #endif /* DOS_NT */
|
|
|
1139 if (newdir != 0)
|
|
|
1140 {
|
|
211
|
1141 /* Get rid of any slash at the end of newdir, unless newdir is
|
|
|
1142 just // (an incomplete UNC name). */
|
|
0
|
1143 int length = strlen ((char *) newdir);
|
|
|
1144 /* Adding `length > 1 &&' makes ~ expand into / when homedir
|
|
|
1145 is the root dir. People disagree about whether that is right.
|
|
|
1146 Anyway, we can't take the risk of this change now. */
|
|
211
|
1147 /* Syncing with FSF 19.34.6 note: FSF does the above. */
|
|
|
1148 if (IS_DIRECTORY_SEP (newdir[length - 1])
|
|
|
1149 #ifdef WINDOWSNT
|
|
|
1150 && !(length == 2 && IS_DIRECTORY_SEP (newdir[0]))
|
|
0
|
1151 #endif
|
|
211
|
1152 )
|
|
0
|
1153 {
|
|
|
1154 Bufbyte *temp = (Bufbyte *) alloca (length);
|
|
|
1155 memcpy (temp, newdir, length - 1);
|
|
|
1156 temp[length - 1] = 0;
|
|
|
1157 newdir = temp;
|
|
|
1158 }
|
|
|
1159 tlen = length + 1;
|
|
|
1160 }
|
|
|
1161 else
|
|
|
1162 tlen = 0;
|
|
|
1163
|
|
|
1164 /* Now concatenate the directory and name to new space in the stack frame */
|
|
|
1165 tlen += strlen ((char *) nm) + 1;
|
|
|
1166 #ifdef DOS_NT
|
|
151
|
1167 /* Add reserved space for drive name. (The Microsoft x86 compiler
|
|
0
|
1168 produces incorrect code if the following two lines are combined.) */
|
|
|
1169 target = (Bufbyte *) alloca (tlen + 2);
|
|
|
1170 target += 2;
|
|
|
1171 #else /* not DOS_NT */
|
|
|
1172 target = (Bufbyte *) alloca (tlen);
|
|
211
|
1173 #endif /* DOS_NT */
|
|
0
|
1174 *target = 0;
|
|
|
1175
|
|
|
1176 if (newdir)
|
|
|
1177 {
|
|
|
1178 if (nm[0] == 0 || IS_DIRECTORY_SEP (nm[0]))
|
|
|
1179 strcpy ((char *) target, (char *) newdir);
|
|
|
1180 else
|
|
|
1181 file_name_as_directory ((char *) target, (char *) newdir);
|
|
|
1182 }
|
|
|
1183
|
|
|
1184 strcat ((char *) target, (char *) nm);
|
|
|
1185
|
|
|
1186 /* Now canonicalize by removing /. and /foo/.. if they appear. */
|
|
|
1187
|
|
|
1188 p = target;
|
|
|
1189 o = target;
|
|
|
1190
|
|
|
1191 while (*p)
|
|
|
1192 {
|
|
|
1193 if (!IS_DIRECTORY_SEP (*p))
|
|
|
1194 {
|
|
|
1195 *o++ = *p++;
|
|
|
1196 }
|
|
|
1197 else if (IS_DIRECTORY_SEP (p[0]) && IS_DIRECTORY_SEP (p[1])
|
|
|
1198 #if defined (APOLLO) || defined (WINDOWSNT)
|
|
151
|
1199 /* // at start of filename is meaningful in Apollo
|
|
0
|
1200 and WindowsNT systems */
|
|
|
1201 && o != target
|
|
211
|
1202 #endif /* APOLLO || WINDOWSNT */
|
|
0
|
1203 )
|
|
|
1204 {
|
|
|
1205 o = target;
|
|
|
1206 p++;
|
|
|
1207 }
|
|
|
1208 else if (IS_DIRECTORY_SEP (p[0])
|
|
|
1209 && p[1] == '.'
|
|
|
1210 && (IS_DIRECTORY_SEP (p[2])
|
|
|
1211 || p[2] == 0))
|
|
|
1212 {
|
|
|
1213 /* If "/." is the entire filename, keep the "/". Otherwise,
|
|
|
1214 just delete the whole "/.". */
|
|
|
1215 if (o == target && p[2] == '\0')
|
|
|
1216 *o++ = *p;
|
|
|
1217 p += 2;
|
|
|
1218 }
|
|
|
1219 else if (IS_DIRECTORY_SEP (p[0]) && p[1] == '.' && p[2] == '.'
|
|
|
1220 /* `/../' is the "superroot" on certain file systems. */
|
|
|
1221 && o != target
|
|
|
1222 && (IS_DIRECTORY_SEP (p[3]) || p[3] == 0))
|
|
|
1223 {
|
|
|
1224 while (o != target && (--o) && !IS_DIRECTORY_SEP (*o))
|
|
|
1225 ;
|
|
211
|
1226 if (o == target && IS_ANY_SEP (*o)
|
|
|
1227 #ifdef DOS_NT
|
|
|
1228 && p[3] == 0
|
|
|
1229 #endif
|
|
|
1230 )
|
|
0
|
1231 ++o;
|
|
|
1232 p += 3;
|
|
|
1233 }
|
|
|
1234 else
|
|
|
1235 {
|
|
|
1236 *o++ = *p++;
|
|
|
1237 }
|
|
|
1238 }
|
|
|
1239
|
|
|
1240 #ifdef DOS_NT
|
|
211
|
1241 /* At last, set drive name. */
|
|
0
|
1242 #ifdef WINDOWSNT
|
|
211
|
1243 /* Except for network file name. */
|
|
|
1244 if (!(IS_DIRECTORY_SEP (target[0]) && IS_DIRECTORY_SEP (target[1])))
|
|
0
|
1245 #endif /* WINDOWSNT */
|
|
|
1246 {
|
|
211
|
1247 if (!drive) abort ();
|
|
0
|
1248 target -= 2;
|
|
211
|
1249 target[0] = DRIVE_LETTER (drive);
|
|
0
|
1250 target[1] = ':';
|
|
|
1251 }
|
|
211
|
1252 CORRECT_DIR_SEPS (target);
|
|
0
|
1253 #endif /* DOS_NT */
|
|
|
1254
|
|
|
1255 return make_string (target, o - target);
|
|
|
1256 }
|
|
|
1257
|
|
|
1258 #if 0 /* FSFmacs */
|
|
|
1259 another older version of expand-file-name;
|
|
|
1260 #endif
|
|
|
1261
|
|
20
|
1262 DEFUN ("file-truename", Ffile_truename, 1, 2, 0, /*
|
|
0
|
1263 Return the canonical name of the given FILE.
|
|
|
1264 Second arg DEFAULT is directory to start with if FILE is relative
|
|
|
1265 (does not start with slash); if DEFAULT is nil or missing,
|
|
|
1266 the current buffer's value of default-directory is used.
|
|
|
1267 No component of the resulting pathname will be a symbolic link, as
|
|
|
1268 in the realpath() function.
|
|
20
|
1269 */
|
|
173
|
1270 (filename, default_))
|
|
0
|
1271 {
|
|
120
|
1272 /* This function can GC. GC checked 1997.04.06. */
|
|
0
|
1273 Lisp_Object expanded_name;
|
|
|
1274 Lisp_Object handler;
|
|
120
|
1275 struct gcpro gcpro1;
|
|
0
|
1276
|
|
|
1277 CHECK_STRING (filename);
|
|
|
1278
|
|
173
|
1279 expanded_name = Fexpand_file_name (filename, default_);
|
|
0
|
1280
|
|
|
1281 if (!STRINGP (expanded_name))
|
|
|
1282 return Qnil;
|
|
|
1283
|
|
|
1284 GCPRO1 (expanded_name);
|
|
|
1285 handler = Ffind_file_name_handler (expanded_name, Qfile_truename);
|
|
|
1286 UNGCPRO;
|
|
|
1287
|
|
|
1288 if (!NILP (handler))
|
|
173
|
1289 return call2_check_string (handler, Qfile_truename, expanded_name);
|
|
0
|
1290
|
|
|
1291 {
|
|
|
1292 char resolved_path[MAXPATHLEN];
|
|
|
1293 char path[MAXPATHLEN];
|
|
|
1294 char *p = path;
|
|
16
|
1295 int elen = XSTRING_LENGTH (expanded_name);
|
|
151
|
1296
|
|
0
|
1297 if (elen >= countof (path))
|
|
|
1298 goto toolong;
|
|
151
|
1299
|
|
16
|
1300 memcpy (path, XSTRING_DATA (expanded_name), elen + 1);
|
|
0
|
1301 /* memset (resolved_path, 0, sizeof (resolved_path)); */
|
|
|
1302
|
|
|
1303 /* Try doing it all at once. */
|
|
|
1304 /* !!#### Does realpath() Mule-encapsulate? */
|
|
|
1305 if (!realpath (path, resolved_path))
|
|
|
1306 {
|
|
|
1307 /* Didn't resolve it -- have to do it one component at a time. */
|
|
|
1308 /* "realpath" is a typically useless, stupid un*x piece of crap.
|
|
|
1309 It claims to return a useful value in the "error" case, but since
|
|
|
1310 there is no indication provided of how far along the pathname
|
|
|
1311 the function went before erring, there is no way to use the
|
|
|
1312 partial result returned. What a piece of junk. */
|
|
|
1313 for (;;)
|
|
|
1314 {
|
|
|
1315 p = (char *) memchr (p + 1, '/', elen - (p + 1 - path));
|
|
|
1316 if (p)
|
|
|
1317 *p = 0;
|
|
|
1318
|
|
|
1319 /* memset (resolved_path, 0, sizeof (resolved_path)); */
|
|
|
1320 if (realpath (path, resolved_path))
|
|
|
1321 {
|
|
|
1322 if (p)
|
|
|
1323 *p = '/';
|
|
|
1324 else
|
|
|
1325 break;
|
|
|
1326
|
|
|
1327 }
|
|
209
|
1328 else if (errno == ENOENT || errno == EACCES)
|
|
0
|
1329 {
|
|
|
1330 /* Failed on this component. Just tack on the rest of
|
|
|
1331 the string and we are done. */
|
|
|
1332 int rlen = strlen (resolved_path);
|
|
|
1333
|
|
|
1334 /* "On failure, it returns NULL, sets errno to indicate
|
|
|
1335 the error, and places in resolved_path the absolute pathname
|
|
|
1336 of the path component which could not be resolved." */
|
|
|
1337 if (p)
|
|
|
1338 {
|
|
|
1339 int plen = elen - (p - path);
|
|
151
|
1340
|
|
0
|
1341 if (rlen > 1 && resolved_path[rlen - 1] == '/')
|
|
|
1342 rlen = rlen - 1;
|
|
|
1343
|
|
|
1344 if (plen + rlen + 1 > countof (resolved_path))
|
|
|
1345 goto toolong;
|
|
|
1346
|
|
|
1347 resolved_path[rlen] = '/';
|
|
|
1348 memcpy (resolved_path + rlen + 1, p + 1, plen + 1 - 1);
|
|
|
1349 }
|
|
|
1350 break;
|
|
|
1351 }
|
|
|
1352 else
|
|
|
1353 goto lose;
|
|
|
1354 }
|
|
|
1355 }
|
|
|
1356
|
|
|
1357 {
|
|
|
1358 int rlen = strlen (resolved_path);
|
|
82
|
1359 if (elen > 0 && XSTRING_BYTE (expanded_name, elen - 1) == '/'
|
|
0
|
1360 && !(rlen > 0 && resolved_path[rlen - 1] == '/'))
|
|
|
1361 {
|
|
|
1362 if (rlen + 1 > countof (resolved_path))
|
|
|
1363 goto toolong;
|
|
|
1364 resolved_path[rlen] = '/';
|
|
|
1365 resolved_path[rlen + 1] = 0;
|
|
|
1366 rlen = rlen + 1;
|
|
|
1367 }
|
|
209
|
1368 return make_ext_string ((Bufbyte *) resolved_path, rlen, FORMAT_BINARY);
|
|
0
|
1369 }
|
|
|
1370
|
|
|
1371 toolong:
|
|
|
1372 errno = ENAMETOOLONG;
|
|
|
1373 goto lose;
|
|
|
1374 lose:
|
|
|
1375 report_file_error ("Finding truename", list1 (expanded_name));
|
|
|
1376 }
|
|
|
1377 return Qnil; /* suppress compiler warning */
|
|
|
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);
|
|
211
|
1412 #ifdef DOS_NT
|
|
|
1413 nm = strcpy (alloca (strlen (nm) + 1), nm);
|
|
|
1414 CORRECT_DIR_SEPS (nm);
|
|
|
1415 substituted = (strcmp (nm, XSTRING_DATA (string)) != 0);
|
|
0
|
1416 #endif
|
|
16
|
1417 endp = nm + XSTRING_LENGTH (string);
|
|
0
|
1418
|
|
|
1419 /* If /~ or // appears, discard everything through first slash. */
|
|
|
1420
|
|
|
1421 for (p = nm; p != endp; p++)
|
|
|
1422 {
|
|
211
|
1423 if ((p[0] == '~'
|
|
|
1424 #if defined (APOLLO) || defined (WINDOWSNT)
|
|
|
1425 /* // at start of file name is meaningful in Apollo and
|
|
|
1426 WindowsNT systems */
|
|
|
1427 || (IS_DIRECTORY_SEP (p[0]) && p - 1 != nm)
|
|
|
1428 #else /* not (APOLLO || WINDOWSNT) */
|
|
|
1429 || IS_DIRECTORY_SEP (p[0])
|
|
|
1430 #endif /* not (APOLLO || WINDOWSNT) */
|
|
0
|
1431 )
|
|
|
1432 && p != nm
|
|
209
|
1433 && (IS_DIRECTORY_SEP (p[-1])))
|
|
0
|
1434 {
|
|
|
1435 nm = p;
|
|
|
1436 substituted = 1;
|
|
|
1437 }
|
|
|
1438 #ifdef DOS_NT
|
|
211
|
1439 /* see comment in expand-file-name about drive specifiers */
|
|
|
1440 else if (IS_DRIVE (p[0]) && p[1] == ':'
|
|
|
1441 && p > nm && IS_DIRECTORY_SEP (p[-1]))
|
|
0
|
1442 {
|
|
|
1443 nm = p;
|
|
|
1444 substituted = 1;
|
|
|
1445 }
|
|
|
1446 #endif /* DOS_NT */
|
|
|
1447 }
|
|
|
1448
|
|
|
1449 /* See if any variables are substituted into the string
|
|
|
1450 and find the total length of their values in `total' */
|
|
|
1451
|
|
|
1452 for (p = nm; p != endp;)
|
|
|
1453 if (*p != '$')
|
|
|
1454 p++;
|
|
|
1455 else
|
|
|
1456 {
|
|
|
1457 p++;
|
|
|
1458 if (p == endp)
|
|
|
1459 goto badsubst;
|
|
|
1460 else if (*p == '$')
|
|
|
1461 {
|
|
|
1462 /* "$$" means a single "$" */
|
|
|
1463 p++;
|
|
|
1464 total -= 1;
|
|
|
1465 substituted = 1;
|
|
|
1466 continue;
|
|
|
1467 }
|
|
|
1468 else if (*p == '{')
|
|
|
1469 {
|
|
|
1470 o = ++p;
|
|
|
1471 while (p != endp && *p != '}') p++;
|
|
|
1472 if (*p != '}') goto missingclose;
|
|
|
1473 s = p;
|
|
|
1474 }
|
|
|
1475 else
|
|
|
1476 {
|
|
|
1477 o = p;
|
|
|
1478 while (p != endp && (isalnum (*p) || *p == '_')) p++;
|
|
|
1479 s = p;
|
|
|
1480 }
|
|
|
1481
|
|
|
1482 /* Copy out the variable name */
|
|
|
1483 target = (Bufbyte *) alloca (s - o + 1);
|
|
|
1484 strncpy ((char *) target, (char *) o, s - o);
|
|
|
1485 target[s - o] = 0;
|
|
|
1486 #ifdef DOS_NT
|
|
|
1487 strupr (target); /* $home == $HOME etc. */
|
|
|
1488 #endif /* DOS_NT */
|
|
|
1489
|
|
|
1490 /* Get variable value */
|
|
|
1491 o = (Bufbyte *) egetenv ((char *) target);
|
|
|
1492 if (!o) goto badvar;
|
|
|
1493 total += strlen ((char *) o);
|
|
|
1494 substituted = 1;
|
|
|
1495 }
|
|
|
1496
|
|
|
1497 if (!substituted)
|
|
|
1498 return string;
|
|
|
1499
|
|
|
1500 /* If substitution required, recopy the string and do it */
|
|
|
1501 /* Make space in stack frame for the new copy */
|
|
16
|
1502 xnm = (Bufbyte *) alloca (XSTRING_LENGTH (string) + total + 1);
|
|
0
|
1503 x = xnm;
|
|
|
1504
|
|
|
1505 /* Copy the rest of the name through, replacing $ constructs with values */
|
|
|
1506 for (p = nm; *p;)
|
|
|
1507 if (*p != '$')
|
|
|
1508 *x++ = *p++;
|
|
|
1509 else
|
|
|
1510 {
|
|
|
1511 p++;
|
|
|
1512 if (p == endp)
|
|
|
1513 goto badsubst;
|
|
|
1514 else if (*p == '$')
|
|
|
1515 {
|
|
|
1516 *x++ = *p++;
|
|
|
1517 continue;
|
|
|
1518 }
|
|
|
1519 else if (*p == '{')
|
|
|
1520 {
|
|
|
1521 o = ++p;
|
|
|
1522 while (p != endp && *p != '}') p++;
|
|
|
1523 if (*p != '}') goto missingclose;
|
|
|
1524 s = p++;
|
|
|
1525 }
|
|
|
1526 else
|
|
|
1527 {
|
|
|
1528 o = p;
|
|
|
1529 while (p != endp && (isalnum (*p) || *p == '_')) p++;
|
|
|
1530 s = p;
|
|
|
1531 }
|
|
|
1532
|
|
|
1533 /* Copy out the variable name */
|
|
|
1534 target = (Bufbyte *) alloca (s - o + 1);
|
|
|
1535 strncpy ((char *) target, (char *) o, s - o);
|
|
|
1536 target[s - o] = 0;
|
|
|
1537 #ifdef DOS_NT
|
|
|
1538 strupr (target); /* $home == $HOME etc. */
|
|
|
1539 #endif /* DOS_NT */
|
|
|
1540
|
|
|
1541 /* Get variable value */
|
|
|
1542 o = (Bufbyte *) egetenv ((char *) target);
|
|
|
1543 if (!o)
|
|
|
1544 goto badvar;
|
|
|
1545
|
|
|
1546 strcpy ((char *) x, (char *) o);
|
|
|
1547 x += strlen ((char *) o);
|
|
|
1548 }
|
|
|
1549
|
|
|
1550 *x = 0;
|
|
|
1551
|
|
|
1552 /* If /~ or // appears, discard everything through first slash. */
|
|
|
1553
|
|
|
1554 for (p = xnm; p != x; p++)
|
|
|
1555 if ((p[0] == '~'
|
|
211
|
1556 #if defined (APOLLO) || defined (WINDOWSNT)
|
|
0
|
1557 || (IS_DIRECTORY_SEP (p[0]) && p - 1 != xnm)
|
|
211
|
1558 #else /* not (APOLLO || WINDOWSNT) */
|
|
|
1559 || IS_DIRECTORY_SEP (p[0])
|
|
|
1560 #endif /* APOLLO || WINDOWSNT */
|
|
0
|
1561 )
|
|
|
1562 /* don't do p[-1] if that would go off the beginning --jwz */
|
|
|
1563 && p != nm && p > xnm && IS_DIRECTORY_SEP (p[-1]))
|
|
|
1564 xnm = p;
|
|
|
1565 #ifdef DOS_NT
|
|
211
|
1566 else if (IS_DRIVE (p[0]) && p[1] == ':'
|
|
|
1567 && p > nm && IS_DIRECTORY_SEP (p[-1]))
|
|
0
|
1568 xnm = p;
|
|
|
1569 #endif
|
|
|
1570
|
|
|
1571 return make_string (xnm, x - xnm);
|
|
|
1572
|
|
|
1573 badsubst:
|
|
|
1574 error ("Bad format environment-variable substitution");
|
|
|
1575 missingclose:
|
|
|
1576 error ("Missing \"}\" in environment-variable substitution");
|
|
|
1577 badvar:
|
|
|
1578 error ("Substituting nonexistent environment variable \"%s\"",
|
|
|
1579 target);
|
|
|
1580
|
|
|
1581 /* NOTREACHED */
|
|
|
1582 return Qnil; /* suppress compiler warning */
|
|
|
1583 }
|
|
|
1584
|
|
211
|
1585 /* A slightly faster and more convenient way to get
|
|
|
1586 (directory-file-name (expand-file-name FOO)). */
|
|
0
|
1587
|
|
|
1588 Lisp_Object
|
|
|
1589 expand_and_dir_to_file (Lisp_Object filename, Lisp_Object defdir)
|
|
|
1590 {
|
|
116
|
1591 /* This function can call lisp */
|
|
0
|
1592 Lisp_Object abspath;
|
|
|
1593 struct gcpro gcpro1;
|
|
|
1594
|
|
|
1595 abspath = Fexpand_file_name (filename, defdir);
|
|
116
|
1596 GCPRO1 (abspath);
|
|
0
|
1597 /* Remove final slash, if any (unless path is root).
|
|
|
1598 stat behaves differently depending! */
|
|
16
|
1599 if (XSTRING_LENGTH (abspath) > 1
|
|
82
|
1600 && IS_DIRECTORY_SEP (XSTRING_BYTE (abspath, XSTRING_LENGTH (abspath) - 1))
|
|
|
1601 && !IS_DEVICE_SEP (XSTRING_BYTE (abspath, XSTRING_LENGTH (abspath) - 2)))
|
|
0
|
1602 /* We cannot take shortcuts; they might be wrong for magic file names. */
|
|
|
1603 abspath = Fdirectory_file_name (abspath);
|
|
|
1604 UNGCPRO;
|
|
|
1605 return abspath;
|
|
|
1606 }
|
|
|
1607
|
|
|
1608 /* Signal an error if the file ABSNAME already exists.
|
|
|
1609 If INTERACTIVE is nonzero, ask the user whether to proceed,
|
|
|
1610 and bypass the error if the user says to go ahead.
|
|
|
1611 QUERYSTRING is a name for the action that is being considered
|
|
|
1612 to alter the file.
|
|
|
1613 *STATPTR is used to store the stat information if the file exists.
|
|
|
1614 If the file does not exist, STATPTR->st_mode is set to 0. */
|
|
|
1615
|
|
|
1616 static void
|
|
|
1617 barf_or_query_if_file_exists (Lisp_Object absname, CONST char *querystring,
|
|
|
1618 int interactive, struct stat *statptr)
|
|
|
1619 {
|
|
120
|
1620 /* This function can GC. GC checked 1997.04.06. */
|
|
0
|
1621 struct stat statbuf;
|
|
|
1622
|
|
|
1623 /* stat is a good way to tell whether the file exists,
|
|
|
1624 regardless of what access permissions it has. */
|
|
16
|
1625 if (stat ((char *) XSTRING_DATA (absname), &statbuf) >= 0)
|
|
0
|
1626 {
|
|
|
1627 Lisp_Object tem;
|
|
116
|
1628
|
|
0
|
1629 if (interactive)
|
|
116
|
1630 {
|
|
|
1631 Lisp_Object prompt;
|
|
|
1632 struct gcpro gcpro1;
|
|
|
1633
|
|
|
1634 prompt = emacs_doprnt_string_c
|
|
0
|
1635 ((CONST Bufbyte *) GETTEXT ("File %s already exists; %s anyway? "),
|
|
16
|
1636 Qnil, -1, XSTRING_DATA (absname),
|
|
116
|
1637 GETTEXT (querystring));
|
|
151
|
1638
|
|
116
|
1639 GCPRO1 (prompt);
|
|
|
1640 tem = call1 (Qyes_or_no_p, prompt);
|
|
|
1641 UNGCPRO;
|
|
|
1642 }
|
|
0
|
1643 else
|
|
|
1644 tem = Qnil;
|
|
116
|
1645
|
|
0
|
1646 if (NILP (tem))
|
|
|
1647 Fsignal (Qfile_already_exists,
|
|
|
1648 list2 (build_translated_string ("File already exists"),
|
|
|
1649 absname));
|
|
|
1650 if (statptr)
|
|
|
1651 *statptr = statbuf;
|
|
|
1652 }
|
|
|
1653 else
|
|
|
1654 {
|
|
|
1655 if (statptr)
|
|
|
1656 statptr->st_mode = 0;
|
|
|
1657 }
|
|
|
1658 return;
|
|
|
1659 }
|
|
|
1660
|
|
20
|
1661 DEFUN ("copy-file", Fcopy_file, 2, 4,
|
|
|
1662 "fCopy file: \nFCopy %s to file: \np\nP", /*
|
|
0
|
1663 Copy FILE to NEWNAME. Both args must be strings.
|
|
|
1664 Signals a `file-already-exists' error if file NEWNAME already exists,
|
|
|
1665 unless a third argument OK-IF-ALREADY-EXISTS is supplied and non-nil.
|
|
|
1666 A number as third arg means request confirmation if NEWNAME already exists.
|
|
|
1667 This is what happens in interactive use with M-x.
|
|
|
1668 Fourth arg KEEP-TIME non-nil means give the new file the same
|
|
|
1669 last-modified time as the old one. (This works on only some systems.)
|
|
|
1670 A prefix arg makes KEEP-TIME non-nil.
|
|
20
|
1671 */
|
|
74
|
1672 (filename, newname, ok_if_already_exists, keep_time))
|
|
0
|
1673 {
|
|
120
|
1674 /* This function can GC. GC checked 1997.04.06. */
|
|
0
|
1675 int ifd, ofd, n;
|
|
|
1676 char buf[16 * 1024];
|
|
|
1677 struct stat st, out_st;
|
|
|
1678 Lisp_Object handler;
|
|
|
1679 int speccount = specpdl_depth ();
|
|
|
1680 struct gcpro gcpro1, gcpro2;
|
|
|
1681 /* Lisp_Object args[6]; */
|
|
|
1682 int input_file_statable_p;
|
|
|
1683
|
|
|
1684 GCPRO2 (filename, newname);
|
|
|
1685 CHECK_STRING (filename);
|
|
|
1686 CHECK_STRING (newname);
|
|
|
1687 filename = Fexpand_file_name (filename, Qnil);
|
|
|
1688 newname = Fexpand_file_name (newname, Qnil);
|
|
|
1689
|
|
|
1690 /* If the input file name has special constructs in it,
|
|
|
1691 call the corresponding file handler. */
|
|
|
1692 handler = Ffind_file_name_handler (filename, Qcopy_file);
|
|
|
1693 /* Likewise for output file name. */
|
|
|
1694 if (NILP (handler))
|
|
|
1695 handler = Ffind_file_name_handler (newname, Qcopy_file);
|
|
|
1696 if (!NILP (handler))
|
|
|
1697 {
|
|
|
1698 UNGCPRO;
|
|
|
1699 return call5 (handler, Qcopy_file, filename, newname,
|
|
74
|
1700 ok_if_already_exists, keep_time);
|
|
0
|
1701 }
|
|
|
1702
|
|
|
1703 /* When second argument is a directory, copy the file into it.
|
|
|
1704 (copy-file "foo" "bar/") == (copy-file "foo" "bar/foo")
|
|
|
1705 */
|
|
|
1706 if (!NILP (Ffile_directory_p (newname)))
|
|
|
1707 {
|
|
|
1708 Lisp_Object args[3];
|
|
|
1709 struct gcpro ngcpro1;
|
|
|
1710 int i = 1;
|
|
|
1711
|
|
151
|
1712 args[0] = newname;
|
|
0
|
1713 args[1] = Qnil; args[2] = Qnil;
|
|
151
|
1714 NGCPRO1 (*args);
|
|
0
|
1715 ngcpro1.nvars = 3;
|
|
82
|
1716 if (XSTRING_BYTE (newname, XSTRING_LENGTH (newname) - 1) != '/')
|
|
0
|
1717 args[i++] = build_string ("/");
|
|
|
1718 args[i++] = Ffile_name_nondirectory (filename);
|
|
|
1719 newname = Fconcat (i, args);
|
|
|
1720 NUNGCPRO;
|
|
|
1721 }
|
|
|
1722
|
|
|
1723 if (NILP (ok_if_already_exists)
|
|
|
1724 || INTP (ok_if_already_exists))
|
|
|
1725 barf_or_query_if_file_exists (newname, "copy to it",
|
|
|
1726 INTP (ok_if_already_exists), &out_st);
|
|
16
|
1727 else if (stat ((CONST char *) XSTRING_DATA (newname), &out_st) < 0)
|
|
0
|
1728 out_st.st_mode = 0;
|
|
|
1729
|
|
16
|
1730 ifd = open ((char *) XSTRING_DATA (filename), O_RDONLY, 0);
|
|
0
|
1731 if (ifd < 0)
|
|
|
1732 report_file_error ("Opening input file", Fcons (filename, Qnil));
|
|
|
1733
|
|
|
1734 record_unwind_protect (close_file_unwind, make_int (ifd));
|
|
|
1735
|
|
|
1736 /* We can only copy regular files and symbolic links. Other files are not
|
|
|
1737 copyable by us. */
|
|
|
1738 input_file_statable_p = (fstat (ifd, &st) >= 0);
|
|
|
1739
|
|
|
1740 #ifndef DOS_NT
|
|
|
1741 if (out_st.st_mode != 0
|
|
|
1742 && st.st_dev == out_st.st_dev && st.st_ino == out_st.st_ino)
|
|
|
1743 {
|
|
|
1744 errno = 0;
|
|
|
1745 report_file_error ("Input and output files are the same",
|
|
|
1746 Fcons (filename, Fcons (newname, Qnil)));
|
|
|
1747 }
|
|
|
1748 #endif
|
|
|
1749
|
|
|
1750 #if defined (S_ISREG) && defined (S_ISLNK)
|
|
|
1751 if (input_file_statable_p)
|
|
|
1752 {
|
|
|
1753 if (!(S_ISREG (st.st_mode))
|
|
|
1754 /* XEmacs: have to allow S_ISCHR in order to copy /dev/null */
|
|
|
1755 #ifdef S_ISCHR
|
|
|
1756 && !(S_ISCHR (st.st_mode))
|
|
|
1757 #endif
|
|
|
1758 && !(S_ISLNK (st.st_mode)))
|
|
|
1759 {
|
|
|
1760 #if defined (EISDIR)
|
|
|
1761 /* Get a better looking error message. */
|
|
|
1762 errno = EISDIR;
|
|
|
1763 #endif /* EISDIR */
|
|
|
1764 report_file_error ("Non-regular file", Fcons (filename, Qnil));
|
|
|
1765 }
|
|
|
1766 }
|
|
|
1767 #endif /* S_ISREG && S_ISLNK */
|
|
|
1768
|
|
|
1769 #ifdef MSDOS
|
|
|
1770 /* System's default file type was set to binary by _fmode in emacs.c. */
|
|
16
|
1771 ofd = creat ((char *) XSTRING_DATA (newname), S_IREAD | S_IWRITE);
|
|
0
|
1772 #else /* not MSDOS */
|
|
16
|
1773 ofd = creat ((char *) XSTRING_DATA (newname), 0666);
|
|
0
|
1774 #endif /* not MSDOS */
|
|
|
1775 if (ofd < 0)
|
|
|
1776 report_file_error ("Opening output file", list1 (newname));
|
|
|
1777
|
|
|
1778 {
|
|
|
1779 Lisp_Object ofd_locative = noseeum_cons (make_int (ofd), Qnil);
|
|
|
1780
|
|
|
1781 record_unwind_protect (close_file_unwind, ofd_locative);
|
|
|
1782
|
|
|
1783 while ((n = read_allowing_quit (ifd, buf, sizeof (buf))) > 0)
|
|
|
1784 {
|
|
|
1785 if (write_allowing_quit (ofd, buf, n) != n)
|
|
|
1786 report_file_error ("I/O error", list1 (newname));
|
|
|
1787 }
|
|
|
1788
|
|
|
1789 /* Closing the output clobbers the file times on some systems. */
|
|
|
1790 if (close (ofd) < 0)
|
|
|
1791 report_file_error ("I/O error", Fcons (newname, Qnil));
|
|
|
1792
|
|
|
1793 if (input_file_statable_p)
|
|
|
1794 {
|
|
74
|
1795 if (!NILP (keep_time))
|
|
0
|
1796 {
|
|
|
1797 EMACS_TIME atime, mtime;
|
|
|
1798 EMACS_SET_SECS_USECS (atime, st.st_atime, 0);
|
|
|
1799 EMACS_SET_SECS_USECS (mtime, st.st_mtime, 0);
|
|
16
|
1800 if (set_file_times ((char *) XSTRING_DATA (newname), atime,
|
|
0
|
1801 mtime))
|
|
|
1802 report_file_error ("I/O error", Fcons (newname, Qnil));
|
|
|
1803 }
|
|
|
1804 #ifndef MSDOS
|
|
16
|
1805 chmod ((CONST char *) XSTRING_DATA (newname),
|
|
0
|
1806 st.st_mode & 07777);
|
|
|
1807 #else /* MSDOS */
|
|
|
1808 #if defined (__DJGPP__) && __DJGPP__ > 1
|
|
|
1809 /* In DJGPP v2.0 and later, fstat usually returns true file mode bits,
|
|
|
1810 and if it can't, it tells so. Otherwise, under MSDOS we usually
|
|
|
1811 get only the READ bit, which will make the copied file read-only,
|
|
|
1812 so it's better not to chmod at all. */
|
|
|
1813 if ((_djstat_flags & _STFAIL_WRITEBIT) == 0)
|
|
16
|
1814 chmod ((char *) XSTRING_DATA (newname), st.st_mode & 07777);
|
|
0
|
1815 #endif /* DJGPP version 2 or newer */
|
|
|
1816 #endif /* MSDOS */
|
|
|
1817 }
|
|
|
1818
|
|
|
1819 /* We'll close it by hand */
|
|
|
1820 XCAR (ofd_locative) = Qnil;
|
|
|
1821
|
|
|
1822 /* Close ifd */
|
|
|
1823 unbind_to (speccount, Qnil);
|
|
|
1824 }
|
|
|
1825
|
|
|
1826 UNGCPRO;
|
|
|
1827 return Qnil;
|
|
|
1828 }
|
|
|
1829
|
|
20
|
1830 DEFUN ("make-directory-internal", Fmake_directory_internal, 1, 1, 0, /*
|
|
0
|
1831 Create a directory. One argument, a file name string.
|
|
20
|
1832 */
|
|
173
|
1833 (dirname_))
|
|
0
|
1834 {
|
|
120
|
1835 /* This function can GC. GC checked 1997.04.06. */
|
|
0
|
1836 char dir [MAXPATHLEN];
|
|
|
1837 Lisp_Object handler;
|
|
|
1838 struct gcpro gcpro1;
|
|
151
|
1839
|
|
173
|
1840 CHECK_STRING (dirname_);
|
|
|
1841 dirname_ = Fexpand_file_name (dirname_, Qnil);
|
|
|
1842
|
|
|
1843 GCPRO1 (dirname_);
|
|
|
1844 handler = Ffind_file_name_handler (dirname_, Qmake_directory_internal);
|
|
0
|
1845 UNGCPRO;
|
|
|
1846 if (!NILP (handler))
|
|
173
|
1847 return (call2 (handler, Qmake_directory_internal, dirname_));
|
|
|
1848
|
|
|
1849 if (XSTRING_LENGTH (dirname_) > (sizeof (dir) - 1))
|
|
0
|
1850 {
|
|
|
1851 return Fsignal (Qfile_error,
|
|
|
1852 list3 (build_translated_string ("Creating directory"),
|
|
|
1853 build_translated_string ("pathame too long"),
|
|
173
|
1854 dirname_));
|
|
0
|
1855 }
|
|
173
|
1856 strncpy (dir, (char *) XSTRING_DATA (dirname_),
|
|
|
1857 XSTRING_LENGTH (dirname_) + 1);
|
|
0
|
1858
|
|
173
|
1859 if (dir [XSTRING_LENGTH (dirname_) - 1] == '/')
|
|
|
1860 dir [XSTRING_LENGTH (dirname_) - 1] = 0;
|
|
0
|
1861
|
|
|
1862 #ifdef WINDOWSNT
|
|
|
1863 if (mkdir (dir) != 0)
|
|
|
1864 #else
|
|
|
1865 if (mkdir (dir, 0777) != 0)
|
|
|
1866 #endif
|
|
173
|
1867 report_file_error ("Creating directory", list1 (dirname_));
|
|
0
|
1868
|
|
|
1869 return Qnil;
|
|
|
1870 }
|
|
|
1871
|
|
20
|
1872 DEFUN ("delete-directory", Fdelete_directory, 1, 1, "FDelete directory: ", /*
|
|
0
|
1873 Delete a directory. One argument, a file name or directory name string.
|
|
20
|
1874 */
|
|
173
|
1875 (dirname_))
|
|
0
|
1876 {
|
|
120
|
1877 /* This function can GC. GC checked 1997.04.06. */
|
|
0
|
1878 Lisp_Object handler;
|
|
|
1879 struct gcpro gcpro1;
|
|
151
|
1880
|
|
173
|
1881 CHECK_STRING (dirname_);
|
|
|
1882
|
|
|
1883 GCPRO1 (dirname_);
|
|
|
1884 dirname_ = Fexpand_file_name (dirname_, Qnil);
|
|
|
1885 dirname_ = Fdirectory_file_name (dirname_);
|
|
|
1886
|
|
|
1887 handler = Ffind_file_name_handler (dirname_, Qdelete_directory);
|
|
0
|
1888 UNGCPRO;
|
|
|
1889 if (!NILP (handler))
|
|
173
|
1890 return (call2 (handler, Qdelete_directory, dirname_));
|
|
|
1891
|
|
|
1892 if (rmdir ((char *) XSTRING_DATA (dirname_)) != 0)
|
|
|
1893 report_file_error ("Removing directory", list1 (dirname_));
|
|
0
|
1894
|
|
|
1895 return Qnil;
|
|
|
1896 }
|
|
|
1897
|
|
20
|
1898 DEFUN ("delete-file", Fdelete_file, 1, 1, "fDelete file: ", /*
|
|
0
|
1899 Delete specified file. One argument, a file name string.
|
|
|
1900 If file has multiple names, it continues to exist with the other names.
|
|
20
|
1901 */
|
|
|
1902 (filename))
|
|
0
|
1903 {
|
|
120
|
1904 /* This function can GC. GC checked 1997.04.06. */
|
|
0
|
1905 Lisp_Object handler;
|
|
|
1906 struct gcpro gcpro1;
|
|
151
|
1907
|
|
0
|
1908 CHECK_STRING (filename);
|
|
|
1909 filename = Fexpand_file_name (filename, Qnil);
|
|
|
1910
|
|
114
|
1911 GCPRO1 (filename);
|
|
0
|
1912 handler = Ffind_file_name_handler (filename, Qdelete_file);
|
|
|
1913 UNGCPRO;
|
|
|
1914 if (!NILP (handler))
|
|
|
1915 return call2 (handler, Qdelete_file, filename);
|
|
|
1916
|
|
16
|
1917 if (0 > unlink ((char *) XSTRING_DATA (filename)))
|
|
0
|
1918 report_file_error ("Removing old name", list1 (filename));
|
|
|
1919 return Qnil;
|
|
|
1920 }
|
|
|
1921
|
|
|
1922 static Lisp_Object
|
|
|
1923 internal_delete_file_1 (Lisp_Object ignore, Lisp_Object ignore2)
|
|
|
1924 {
|
|
|
1925 return Qt;
|
|
|
1926 }
|
|
|
1927
|
|
|
1928 /* Delete file FILENAME, returning 1 if successful and 0 if failed. */
|
|
|
1929
|
|
|
1930 int
|
|
|
1931 internal_delete_file (Lisp_Object filename)
|
|
|
1932 {
|
|
120
|
1933 /* This function can GC. GC checked 1997.04.06. */
|
|
0
|
1934 return NILP (condition_case_1 (Qt, Fdelete_file, filename,
|
|
|
1935 internal_delete_file_1, Qnil));
|
|
|
1936 }
|
|
|
1937
|
|
20
|
1938 DEFUN ("rename-file", Frename_file, 2, 3,
|
|
|
1939 "fRename file: \nFRename %s to file: \np", /*
|
|
0
|
1940 Rename FILE as NEWNAME. Both args strings.
|
|
|
1941 If file has names other than FILE, it continues to have those names.
|
|
|
1942 Signals a `file-already-exists' error if a file NEWNAME already exists
|
|
|
1943 unless optional third argument OK-IF-ALREADY-EXISTS is non-nil.
|
|
|
1944 A number as third arg means request confirmation if NEWNAME already exists.
|
|
|
1945 This is what happens in interactive use with M-x.
|
|
20
|
1946 */
|
|
|
1947 (filename, newname, ok_if_already_exists))
|
|
0
|
1948 {
|
|
120
|
1949 /* This function can GC. GC checked 1997.04.06. */
|
|
0
|
1950 Lisp_Object handler;
|
|
|
1951 struct gcpro gcpro1, gcpro2;
|
|
|
1952
|
|
|
1953 GCPRO2 (filename, newname);
|
|
|
1954 CHECK_STRING (filename);
|
|
|
1955 CHECK_STRING (newname);
|
|
|
1956 filename = Fexpand_file_name (filename, Qnil);
|
|
|
1957 newname = Fexpand_file_name (newname, Qnil);
|
|
|
1958
|
|
|
1959 /* If the file name has special constructs in it,
|
|
|
1960 call the corresponding file handler. */
|
|
|
1961 handler = Ffind_file_name_handler (filename, Qrename_file);
|
|
|
1962 if (NILP (handler))
|
|
|
1963 handler = Ffind_file_name_handler (newname, Qrename_file);
|
|
|
1964 if (!NILP (handler))
|
|
|
1965 {
|
|
|
1966 UNGCPRO;
|
|
|
1967 return call4 (handler, Qrename_file,
|
|
|
1968 filename, newname, ok_if_already_exists);
|
|
|
1969 }
|
|
|
1970
|
|
|
1971 /* When second argument is a directory, rename the file into it.
|
|
|
1972 (rename-file "foo" "bar/") == (rename-file "foo" "bar/foo")
|
|
|
1973 */
|
|
|
1974 if (!NILP (Ffile_directory_p (newname)))
|
|
|
1975 {
|
|
|
1976 Lisp_Object args[3];
|
|
|
1977 struct gcpro ngcpro1;
|
|
|
1978 int i = 1;
|
|
|
1979
|
|
151
|
1980 args[0] = newname;
|
|
0
|
1981 args[1] = Qnil; args[2] = Qnil;
|
|
151
|
1982 NGCPRO1 (*args);
|
|
0
|
1983 ngcpro1.nvars = 3;
|
|
16
|
1984 if (XSTRING_BYTE (newname, XSTRING_LENGTH (newname) - 1) != '/')
|
|
0
|
1985 args[i++] = build_string ("/");
|
|
|
1986 args[i++] = Ffile_name_nondirectory (filename);
|
|
|
1987 newname = Fconcat (i, args);
|
|
|
1988 NUNGCPRO;
|
|
|
1989 }
|
|
|
1990
|
|
|
1991 if (NILP (ok_if_already_exists)
|
|
|
1992 || INTP (ok_if_already_exists))
|
|
|
1993 barf_or_query_if_file_exists (newname, "rename to it",
|
|
|
1994 INTP (ok_if_already_exists), 0);
|
|
|
1995
|
|
211
|
1996 /* Syncing with FSF 19.34.6 note: FSF does not have conditional code for
|
|
|
1997 WINDOWSNT here; I've removed it. --marcpa */
|
|
|
1998
|
|
0
|
1999 /* FSFmacs only calls rename() here under BSD 4.1, and calls
|
|
|
2000 link() and unlink() otherwise, but that's bogus. Sometimes
|
|
|
2001 rename() succeeds where link()/unlink() fail, and we have
|
|
|
2002 configure check for rename() and emulate using link()/unlink()
|
|
|
2003 if necessary. */
|
|
16
|
2004 if (0 > rename ((char *) XSTRING_DATA (filename),
|
|
|
2005 (char *) XSTRING_DATA (newname)))
|
|
0
|
2006 {
|
|
|
2007 if (errno == EXDEV)
|
|
|
2008 {
|
|
|
2009 Fcopy_file (filename, newname,
|
|
|
2010 /* We have already prompted if it was an integer,
|
|
|
2011 so don't have copy-file prompt again. */
|
|
|
2012 ((NILP (ok_if_already_exists)) ? Qnil : Qt),
|
|
|
2013 Qt);
|
|
|
2014 Fdelete_file (filename);
|
|
|
2015 }
|
|
|
2016 else
|
|
|
2017 {
|
|
|
2018 report_file_error ("Renaming", list2 (filename, newname));
|
|
|
2019 }
|
|
|
2020 }
|
|
|
2021 UNGCPRO;
|
|
|
2022 return Qnil;
|
|
|
2023 }
|
|
|
2024
|
|
20
|
2025 DEFUN ("add-name-to-file", Fadd_name_to_file, 2, 3,
|
|
|
2026 "fAdd name to file: \nFName to add to %s: \np", /*
|
|
0
|
2027 Give FILE additional name NEWNAME. Both args strings.
|
|
|
2028 Signals a `file-already-exists' error if a file NEWNAME already exists
|
|
|
2029 unless optional third argument OK-IF-ALREADY-EXISTS is non-nil.
|
|
|
2030 A number as third arg means request confirmation if NEWNAME already exists.
|
|
|
2031 This is what happens in interactive use with M-x.
|
|
20
|
2032 */
|
|
|
2033 (filename, newname, ok_if_already_exists))
|
|
0
|
2034 {
|
|
120
|
2035 /* This function can GC. GC checked 1997.04.06. */
|
|
0
|
2036 Lisp_Object handler;
|
|
|
2037 struct gcpro gcpro1, gcpro2;
|
|
|
2038
|
|
|
2039 GCPRO2 (filename, newname);
|
|
|
2040 CHECK_STRING (filename);
|
|
|
2041 CHECK_STRING (newname);
|
|
|
2042 filename = Fexpand_file_name (filename, Qnil);
|
|
|
2043 newname = Fexpand_file_name (newname, Qnil);
|
|
|
2044
|
|
|
2045 /* If the file name has special constructs in it,
|
|
|
2046 call the corresponding file handler. */
|
|
|
2047 handler = Ffind_file_name_handler (filename, Qadd_name_to_file);
|
|
|
2048 if (!NILP (handler))
|
|
|
2049 RETURN_UNGCPRO (call4 (handler, Qadd_name_to_file, filename,
|
|
|
2050 newname, ok_if_already_exists));
|
|
|
2051
|
|
|
2052 /* If the new name has special constructs in it,
|
|
|
2053 call the corresponding file handler. */
|
|
|
2054 handler = Ffind_file_name_handler (newname, Qadd_name_to_file);
|
|
|
2055 if (!NILP (handler))
|
|
|
2056 RETURN_UNGCPRO (call4 (handler, Qadd_name_to_file, filename,
|
|
|
2057 newname, ok_if_already_exists));
|
|
|
2058
|
|
|
2059 if (NILP (ok_if_already_exists)
|
|
|
2060 || INTP (ok_if_already_exists))
|
|
|
2061 barf_or_query_if_file_exists (newname, "make it a new name",
|
|
|
2062 INTP (ok_if_already_exists), 0);
|
|
211
|
2063 /* Syncing with FSF 19.34.6 note: FSF does not report a file error
|
|
|
2064 on NT here. --marcpa */
|
|
213
|
2065 /* But FSF #defines link as sys_link which is supplied in nt.c. We can't do
|
|
|
2066 that because sysfile.h defines sys_link depending on ENCAPSULATE_LINK.
|
|
|
2067 Reverted to previous behaviour pending a working fix. (jhar) */
|
|
|
2068 #if defined(WINDOWSNT)
|
|
0
|
2069 /* Windows does not support this operation. */
|
|
|
2070 report_file_error ("Adding new name", Flist (2, &filename));
|
|
213
|
2071 #else /* not defined(WINDOWSNT) */
|
|
0
|
2072
|
|
16
|
2073 unlink ((char *) XSTRING_DATA (newname));
|
|
|
2074 if (0 > link ((char *) XSTRING_DATA (filename),
|
|
|
2075 (char *) XSTRING_DATA (newname)))
|
|
0
|
2076 {
|
|
|
2077 report_file_error ("Adding new name",
|
|
|
2078 list2 (filename, newname));
|
|
|
2079 }
|
|
213
|
2080 #endif /* defined(WINDOWSNT) */
|
|
0
|
2081
|
|
|
2082 UNGCPRO;
|
|
|
2083 return Qnil;
|
|
|
2084 }
|
|
|
2085
|
|
|
2086 #ifdef S_IFLNK
|
|
20
|
2087 DEFUN ("make-symbolic-link", Fmake_symbolic_link, 2, 3,
|
|
|
2088 "FMake symbolic link to file: \nFMake symbolic link to file %s: \np", /*
|
|
0
|
2089 Make a symbolic link to FILENAME, named LINKNAME. Both args strings.
|
|
|
2090 Signals a `file-already-exists' error if a file LINKNAME already exists
|
|
|
2091 unless optional third argument OK-IF-ALREADY-EXISTS is non-nil.
|
|
|
2092 A number as third arg means request confirmation if LINKNAME already exists.
|
|
|
2093 This happens for interactive use with M-x.
|
|
20
|
2094 */
|
|
|
2095 (filename, linkname, ok_if_already_exists))
|
|
0
|
2096 {
|
|
120
|
2097 /* This function can GC. GC checked 1997.06.04. */
|
|
0
|
2098 Lisp_Object handler;
|
|
|
2099 struct gcpro gcpro1, gcpro2;
|
|
|
2100
|
|
|
2101 GCPRO2 (filename, linkname);
|
|
|
2102 CHECK_STRING (filename);
|
|
|
2103 CHECK_STRING (linkname);
|
|
|
2104 /* If the link target has a ~, we must expand it to get
|
|
|
2105 a truly valid file name. Otherwise, do not expand;
|
|
|
2106 we want to permit links to relative file names. */
|
|
211
|
2107 if (XSTRING_BYTE (filename, 0) == '~')
|
|
0
|
2108 filename = Fexpand_file_name (filename, Qnil);
|
|
|
2109 linkname = Fexpand_file_name (linkname, Qnil);
|
|
|
2110
|
|
|
2111 /* If the file name has special constructs in it,
|
|
|
2112 call the corresponding file handler. */
|
|
|
2113 handler = Ffind_file_name_handler (filename, Qmake_symbolic_link);
|
|
|
2114 if (!NILP (handler))
|
|
|
2115 RETURN_UNGCPRO (call4 (handler, Qmake_symbolic_link, filename, linkname,
|
|
|
2116 ok_if_already_exists));
|
|
|
2117
|
|
|
2118 /* If the new link name has special constructs in it,
|
|
|
2119 call the corresponding file handler. */
|
|
|
2120 handler = Ffind_file_name_handler (linkname, Qmake_symbolic_link);
|
|
|
2121 if (!NILP (handler))
|
|
|
2122 RETURN_UNGCPRO (call4 (handler, Qmake_symbolic_link, filename,
|
|
|
2123 linkname, ok_if_already_exists));
|
|
|
2124
|
|
|
2125 if (NILP (ok_if_already_exists)
|
|
|
2126 || INTP (ok_if_already_exists))
|
|
|
2127 barf_or_query_if_file_exists (linkname, "make it a link",
|
|
|
2128 INTP (ok_if_already_exists), 0);
|
|
|
2129
|
|
16
|
2130 unlink ((char *) XSTRING_DATA (linkname));
|
|
|
2131 if (0 > symlink ((char *) XSTRING_DATA (filename),
|
|
|
2132 (char *) XSTRING_DATA (linkname)))
|
|
0
|
2133 {
|
|
|
2134 report_file_error ("Making symbolic link",
|
|
|
2135 list2 (filename, linkname));
|
|
|
2136 }
|
|
|
2137 UNGCPRO;
|
|
|
2138 return Qnil;
|
|
|
2139 }
|
|
|
2140 #endif /* S_IFLNK */
|
|
|
2141
|
|
|
2142 #ifdef HPUX_NET
|
|
|
2143
|
|
20
|
2144 DEFUN ("sysnetunam", Fsysnetunam, 2, 2, 0, /*
|
|
0
|
2145 Open a network connection to PATH using LOGIN as the login string.
|
|
20
|
2146 */
|
|
|
2147 (path, login))
|
|
0
|
2148 {
|
|
|
2149 int netresult;
|
|
151
|
2150
|
|
0
|
2151 CHECK_STRING (path);
|
|
151
|
2152 CHECK_STRING (login);
|
|
0
|
2153
|
|
|
2154 /* netunam, being a strange-o system call only used once, is not
|
|
|
2155 encapsulated. */
|
|
|
2156 {
|
|
|
2157 char *path_ext;
|
|
|
2158 char *login_ext;
|
|
|
2159
|
|
|
2160 GET_C_STRING_FILENAME_DATA_ALLOCA (path, path_ext);
|
|
|
2161 GET_C_STRING_EXT_DATA_ALLOCA (login, FORMAT_OS, login_ext);
|
|
151
|
2162
|
|
0
|
2163 netresult = netunam (path_ext, login_ext);
|
|
|
2164 }
|
|
|
2165
|
|
|
2166 if (netresult == -1)
|
|
|
2167 return Qnil;
|
|
|
2168 else
|
|
|
2169 return Qt;
|
|
|
2170 }
|
|
|
2171 #endif /* HPUX_NET */
|
|
|
2172
|
|
20
|
2173 DEFUN ("file-name-absolute-p", Ffile_name_absolute_p, 1, 1, 0, /*
|
|
0
|
2174 Return t if file FILENAME specifies an absolute path name.
|
|
|
2175 On Unix, this is a name starting with a `/' or a `~'.
|
|
20
|
2176 */
|
|
|
2177 (filename))
|
|
0
|
2178 {
|
|
116
|
2179 /* This function does not GC */
|
|
0
|
2180 Bufbyte *ptr;
|
|
|
2181
|
|
|
2182 CHECK_STRING (filename);
|
|
16
|
2183 ptr = XSTRING_DATA (filename);
|
|
0
|
2184 if (IS_DIRECTORY_SEP (*ptr) || *ptr == '~'
|
|
|
2185 #ifdef DOS_NT
|
|
211
|
2186 || (IS_DRIVE (*ptr) && ptr[1] == ':' && IS_DIRECTORY_SEP (ptr[2]))
|
|
0
|
2187 #endif
|
|
|
2188 )
|
|
|
2189 return Qt;
|
|
|
2190 else
|
|
|
2191 return Qnil;
|
|
|
2192 }
|
|
|
2193
|
|
|
2194 /* Return nonzero if file FILENAME exists and can be executed. */
|
|
|
2195
|
|
|
2196 static int
|
|
|
2197 check_executable (char *filename)
|
|
|
2198 {
|
|
|
2199 #ifdef DOS_NT
|
|
|
2200 int len = strlen (filename);
|
|
|
2201 char *suffix;
|
|
|
2202 struct stat st;
|
|
|
2203 if (stat (filename, &st) < 0)
|
|
|
2204 return 0;
|
|
211
|
2205 #if defined (WINDOWSNT)
|
|
|
2206 return ((st.st_mode & S_IEXEC) != 0);
|
|
|
2207 #else
|
|
0
|
2208 return (S_ISREG (st.st_mode)
|
|
|
2209 && len >= 5
|
|
|
2210 && (stricmp ((suffix = filename + len-4), ".com") == 0
|
|
|
2211 || stricmp (suffix, ".exe") == 0
|
|
|
2212 || stricmp (suffix, ".bat") == 0)
|
|
|
2213 || (st.st_mode & S_IFMT) == S_IFDIR);
|
|
211
|
2214 #endif /* not WINDOWSNT */
|
|
0
|
2215 #else /* not DOS_NT */
|
|
|
2216 #ifdef HAVE_EACCESS
|
|
183
|
2217 return eaccess (filename, 1) >= 0;
|
|
0
|
2218 #else
|
|
|
2219 /* Access isn't quite right because it uses the real uid
|
|
|
2220 and we really want to test with the effective uid.
|
|
|
2221 But Unix doesn't give us a right way to do it. */
|
|
183
|
2222 return access (filename, 1) >= 0;
|
|
|
2223 #endif /* HAVE_EACCESS */
|
|
0
|
2224 #endif /* not DOS_NT */
|
|
|
2225 }
|
|
|
2226
|
|
|
2227 /* Return nonzero if file FILENAME exists and can be written. */
|
|
|
2228
|
|
|
2229 static int
|
|
|
2230 check_writable (CONST char *filename)
|
|
|
2231 {
|
|
|
2232 #ifdef MSDOS
|
|
|
2233 struct stat st;
|
|
|
2234 if (stat (filename, &st) < 0)
|
|
|
2235 return 0;
|
|
|
2236 return (st.st_mode & S_IWRITE || (st.st_mode & S_IFMT) == S_IFDIR);
|
|
|
2237 #else /* not MSDOS */
|
|
|
2238 #ifdef HAVE_EACCESS
|
|
|
2239 return (eaccess (filename, 2) >= 0);
|
|
|
2240 #else
|
|
|
2241 /* Access isn't quite right because it uses the real uid
|
|
|
2242 and we really want to test with the effective uid.
|
|
|
2243 But Unix doesn't give us a right way to do it.
|
|
|
2244 Opening with O_WRONLY could work for an ordinary file,
|
|
|
2245 but would lose for directories. */
|
|
|
2246 return (access (filename, 2) >= 0);
|
|
|
2247 #endif
|
|
|
2248 #endif /* not MSDOS */
|
|
|
2249 }
|
|
|
2250
|
|
20
|
2251 DEFUN ("file-exists-p", Ffile_exists_p, 1, 1, 0, /*
|
|
0
|
2252 Return t if file FILENAME exists. (This does not mean you can read it.)
|
|
|
2253 See also `file-readable-p' and `file-attributes'.
|
|
20
|
2254 */
|
|
|
2255 (filename))
|
|
0
|
2256 {
|
|
116
|
2257 /* This function can call lisp */
|
|
0
|
2258 Lisp_Object abspath;
|
|
|
2259 Lisp_Object handler;
|
|
|
2260 struct stat statbuf;
|
|
|
2261 struct gcpro gcpro1;
|
|
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 GCPRO1 (abspath);
|
|
|
2269 handler = Ffind_file_name_handler (abspath, Qfile_exists_p);
|
|
|
2270 UNGCPRO;
|
|
|
2271 if (!NILP (handler))
|
|
|
2272 return call2 (handler, Qfile_exists_p, abspath);
|
|
|
2273
|
|
16
|
2274 if (stat ((char *) XSTRING_DATA (abspath), &statbuf) >= 0)
|
|
0
|
2275 return (Qt);
|
|
|
2276 else
|
|
|
2277 return (Qnil);
|
|
|
2278 }
|
|
|
2279
|
|
20
|
2280 DEFUN ("file-executable-p", Ffile_executable_p, 1, 1, 0, /*
|
|
0
|
2281 Return t if FILENAME can be executed by you.
|
|
|
2282 For a directory, this means you can access files in that directory.
|
|
20
|
2283 */
|
|
|
2284 (filename))
|
|
70
|
2285
|
|
0
|
2286 {
|
|
124
|
2287 /* This function can GC. GC checked 1997.04.10. */
|
|
0
|
2288 Lisp_Object abspath;
|
|
|
2289 Lisp_Object handler;
|
|
|
2290 struct gcpro gcpro1;
|
|
151
|
2291
|
|
0
|
2292 CHECK_STRING (filename);
|
|
|
2293 abspath = Fexpand_file_name (filename, Qnil);
|
|
|
2294
|
|
|
2295 /* If the file name has special constructs in it,
|
|
|
2296 call the corresponding file handler. */
|
|
|
2297 GCPRO1 (abspath);
|
|
|
2298 handler = Ffind_file_name_handler (abspath, Qfile_executable_p);
|
|
|
2299 UNGCPRO;
|
|
|
2300 if (!NILP (handler))
|
|
|
2301 return call2 (handler, Qfile_executable_p, abspath);
|
|
|
2302
|
|
16
|
2303 return (check_executable ((char *) XSTRING_DATA (abspath))
|
|
0
|
2304 ? Qt : Qnil);
|
|
|
2305 }
|
|
|
2306
|
|
20
|
2307 DEFUN ("file-readable-p", Ffile_readable_p, 1, 1, 0, /*
|
|
0
|
2308 Return t if file FILENAME exists and you can read it.
|
|
|
2309 See also `file-exists-p' and `file-attributes'.
|
|
20
|
2310 */
|
|
|
2311 (filename))
|
|
0
|
2312 {
|
|
124
|
2313 /* This function can GC. GC checked 1997.04.10. */
|
|
0
|
2314 Lisp_Object abspath;
|
|
|
2315 Lisp_Object handler;
|
|
|
2316 int desc;
|
|
|
2317 struct gcpro gcpro1;
|
|
151
|
2318
|
|
0
|
2319 CHECK_STRING (filename);
|
|
|
2320 abspath = Fexpand_file_name (filename, Qnil);
|
|
|
2321
|
|
|
2322 /* If the file name has special constructs in it,
|
|
|
2323 call the corresponding file handler. */
|
|
|
2324 GCPRO1 (abspath);
|
|
|
2325 handler = Ffind_file_name_handler (abspath, Qfile_readable_p);
|
|
|
2326 UNGCPRO;
|
|
|
2327 if (!NILP (handler))
|
|
|
2328 return call2 (handler, Qfile_readable_p, abspath);
|
|
|
2329
|
|
211
|
2330 #ifdef DOS_NT
|
|
|
2331 /* Under MS-DOS and Windows, open does not work for directories. */
|
|
|
2332 if (access (XSTRING_DATA (abspath), 0) == 0)
|
|
|
2333 return Qt;
|
|
|
2334 return Qnil;
|
|
|
2335 #else /* not DOS_NT */
|
|
16
|
2336 desc = open ((char *) XSTRING_DATA (abspath), O_RDONLY, 0);
|
|
0
|
2337 if (desc < 0)
|
|
|
2338 return Qnil;
|
|
|
2339 close (desc);
|
|
|
2340 return Qt;
|
|
211
|
2341 #endif /* not DOS_NT */
|
|
0
|
2342 }
|
|
|
2343
|
|
|
2344 /* Having this before file-symlink-p mysteriously caused it to be forgotten
|
|
|
2345 on the RT/PC. */
|
|
20
|
2346 DEFUN ("file-writable-p", Ffile_writable_p, 1, 1, 0, /*
|
|
0
|
2347 Return t if file FILENAME can be written or created by you.
|
|
20
|
2348 */
|
|
|
2349 (filename))
|
|
0
|
2350 {
|
|
124
|
2351 /* This function can GC. GC checked 1997.04.10. */
|
|
0
|
2352 Lisp_Object abspath, dir;
|
|
|
2353 Lisp_Object handler;
|
|
|
2354 struct stat statbuf;
|
|
|
2355 struct gcpro gcpro1;
|
|
151
|
2356
|
|
0
|
2357 CHECK_STRING (filename);
|
|
|
2358 abspath = Fexpand_file_name (filename, Qnil);
|
|
|
2359
|
|
|
2360 /* If the file name has special constructs in it,
|
|
|
2361 call the corresponding file handler. */
|
|
|
2362 GCPRO1 (abspath);
|
|
|
2363 handler = Ffind_file_name_handler (abspath, Qfile_writable_p);
|
|
|
2364 UNGCPRO;
|
|
|
2365 if (!NILP (handler))
|
|
|
2366 return call2 (handler, Qfile_writable_p, abspath);
|
|
|
2367
|
|
16
|
2368 if (stat ((char *) XSTRING_DATA (abspath), &statbuf) >= 0)
|
|
|
2369 return (check_writable ((char *) XSTRING_DATA (abspath))
|
|
0
|
2370 ? Qt : Qnil);
|
|
|
2371
|
|
|
2372
|
|
114
|
2373 GCPRO1 (abspath);
|
|
0
|
2374 dir = Ffile_name_directory (abspath);
|
|
114
|
2375 UNGCPRO;
|
|
209
|
2376 #ifdef MSDOS
|
|
0
|
2377 if (!NILP (dir))
|
|
114
|
2378 {
|
|
|
2379 GCPRO1(dir);
|
|
|
2380 dir = Fdirectory_file_name (dir);
|
|
|
2381 UNGCPRO;
|
|
|
2382 }
|
|
209
|
2383 #endif /* MSDOS */
|
|
16
|
2384 return (check_writable (!NILP (dir) ? (char *) XSTRING_DATA (dir)
|
|
0
|
2385 : "")
|
|
|
2386 ? Qt : Qnil);
|
|
|
2387 }
|
|
|
2388
|
|
20
|
2389 DEFUN ("file-symlink-p", Ffile_symlink_p, 1, 1, 0, /*
|
|
0
|
2390 Return non-nil if file FILENAME is the name of a symbolic link.
|
|
|
2391 The value is the name of the file to which it is linked.
|
|
|
2392 Otherwise returns nil.
|
|
20
|
2393 */
|
|
|
2394 (filename))
|
|
0
|
2395 {
|
|
124
|
2396 /* This function can GC. GC checked 1997.04.10. */
|
|
0
|
2397 #ifdef S_IFLNK
|
|
|
2398 char *buf;
|
|
|
2399 int bufsize;
|
|
|
2400 int valsize;
|
|
|
2401 Lisp_Object val;
|
|
|
2402 Lisp_Object handler;
|
|
|
2403 struct gcpro gcpro1;
|
|
151
|
2404
|
|
0
|
2405 CHECK_STRING (filename);
|
|
|
2406 filename = Fexpand_file_name (filename, Qnil);
|
|
|
2407
|
|
|
2408 /* If the file name has special constructs in it,
|
|
|
2409 call the corresponding file handler. */
|
|
116
|
2410 GCPRO1 (filename);
|
|
0
|
2411 handler = Ffind_file_name_handler (filename, Qfile_symlink_p);
|
|
116
|
2412 UNGCPRO;
|
|
0
|
2413 if (!NILP (handler))
|
|
|
2414 return call2 (handler, Qfile_symlink_p, filename);
|
|
|
2415
|
|
|
2416 bufsize = 100;
|
|
|
2417 while (1)
|
|
|
2418 {
|
|
185
|
2419 buf = xnew_array_and_zero (char, bufsize);
|
|
16
|
2420 valsize = readlink ((char *) XSTRING_DATA (filename),
|
|
0
|
2421 buf, bufsize);
|
|
|
2422 if (valsize < bufsize) break;
|
|
|
2423 /* Buffer was not long enough */
|
|
|
2424 xfree (buf);
|
|
|
2425 bufsize *= 2;
|
|
|
2426 }
|
|
|
2427 if (valsize == -1)
|
|
|
2428 {
|
|
|
2429 xfree (buf);
|
|
|
2430 return Qnil;
|
|
|
2431 }
|
|
|
2432 val = make_string ((Bufbyte *) buf, valsize);
|
|
|
2433 xfree (buf);
|
|
|
2434 return val;
|
|
|
2435 #else /* not S_IFLNK */
|
|
|
2436 return Qnil;
|
|
|
2437 #endif /* not S_IFLNK */
|
|
|
2438 }
|
|
|
2439
|
|
20
|
2440 DEFUN ("file-directory-p", Ffile_directory_p, 1, 1, 0, /*
|
|
0
|
2441 Return t if file FILENAME is the name of a directory as a file.
|
|
|
2442 A directory name spec may be given instead; then the value is t
|
|
|
2443 if the directory so specified exists and really is a directory.
|
|
20
|
2444 */
|
|
|
2445 (filename))
|
|
0
|
2446 {
|
|
124
|
2447 /* This function can GC. GC checked 1997.04.10. */
|
|
0
|
2448 Lisp_Object abspath;
|
|
|
2449 struct stat st;
|
|
|
2450 Lisp_Object handler;
|
|
|
2451 struct gcpro gcpro1;
|
|
151
|
2452
|
|
114
|
2453 GCPRO1 (current_buffer->directory);
|
|
0
|
2454 abspath = expand_and_dir_to_file (filename,
|
|
|
2455 current_buffer->directory);
|
|
|
2456 UNGCPRO;
|
|
|
2457
|
|
|
2458 /* If the file name has special constructs in it,
|
|
|
2459 call the corresponding file handler. */
|
|
|
2460 GCPRO1 (abspath);
|
|
|
2461 handler = Ffind_file_name_handler (abspath, Qfile_directory_p);
|
|
|
2462 UNGCPRO;
|
|
|
2463 if (!NILP (handler))
|
|
|
2464 return call2 (handler, Qfile_directory_p, abspath);
|
|
|
2465
|
|
16
|
2466 if (stat ((char *) XSTRING_DATA (abspath), &st) < 0)
|
|
0
|
2467 return Qnil;
|
|
|
2468 return (st.st_mode & S_IFMT) == S_IFDIR ? Qt : Qnil;
|
|
|
2469 }
|
|
|
2470
|
|
20
|
2471 DEFUN ("file-accessible-directory-p", Ffile_accessible_directory_p, 1, 1, 0, /*
|
|
0
|
2472 Return t if file FILENAME is the name of a directory as a file,
|
|
|
2473 and files in that directory can be opened by you. In order to use a
|
|
|
2474 directory as a buffer's current directory, this predicate must return true.
|
|
|
2475 A directory name spec may be given instead; then the value is t
|
|
|
2476 if the directory so specified exists and really is a readable and
|
|
|
2477 searchable directory.
|
|
20
|
2478 */
|
|
|
2479 (filename))
|
|
0
|
2480 {
|
|
124
|
2481 /* This function can GC. GC checked 1997.04.10. */
|
|
0
|
2482 Lisp_Object handler;
|
|
|
2483
|
|
|
2484 /* If the file name has special constructs in it,
|
|
|
2485 call the corresponding file handler. */
|
|
|
2486 handler = Ffind_file_name_handler (filename, Qfile_accessible_directory_p);
|
|
|
2487 if (!NILP (handler))
|
|
|
2488 return call2 (handler, Qfile_accessible_directory_p,
|
|
|
2489 filename);
|
|
|
2490
|
|
211
|
2491 #if !defined(DOS_NT)
|
|
0
|
2492 if (NILP (Ffile_directory_p (filename)))
|
|
|
2493 return (Qnil);
|
|
116
|
2494 else
|
|
|
2495 return Ffile_executable_p (filename);
|
|
211
|
2496 #else
|
|
|
2497 {
|
|
|
2498 int tem;
|
|
|
2499 struct gcpro gcpro1;
|
|
|
2500 /* It's an unlikely combination, but yes we really do need to gcpro:
|
|
|
2501 Suppose that file-accessible-directory-p has no handler, but
|
|
|
2502 file-directory-p does have a handler; this handler causes a GC which
|
|
|
2503 relocates the string in `filename'; and finally file-directory-p
|
|
|
2504 returns non-nil. Then we would end up passing a garbaged string
|
|
|
2505 to file-executable-p. */
|
|
|
2506 GCPRO1 (filename);
|
|
|
2507 tem = (NILP (Ffile_directory_p (filename))
|
|
|
2508 || NILP (Ffile_executable_p (filename)));
|
|
|
2509 UNGCPRO;
|
|
|
2510 return tem ? Qnil : Qt;
|
|
|
2511 }
|
|
|
2512 #endif /* !defined(DOS_NT) */
|
|
0
|
2513 }
|
|
|
2514
|
|
20
|
2515 DEFUN ("file-regular-p", Ffile_regular_p, 1, 1, 0, /*
|
|
0
|
2516 "Return t if file FILENAME is the name of a regular file.
|
|
|
2517 This is the sort of file that holds an ordinary stream of data bytes.
|
|
20
|
2518 */
|
|
|
2519 (filename))
|
|
0
|
2520 {
|
|
124
|
2521 /* This function can GC. GC checked 1997.04.10. */
|
|
114
|
2522 Lisp_Object abspath;
|
|
0
|
2523 struct stat st;
|
|
|
2524 Lisp_Object handler;
|
|
114
|
2525 struct gcpro gcpro1;
|
|
|
2526
|
|
|
2527 GCPRO1 (current_buffer->directory);
|
|
0
|
2528 abspath = expand_and_dir_to_file (filename, current_buffer->directory);
|
|
114
|
2529 UNGCPRO;
|
|
0
|
2530
|
|
|
2531 /* If the file name has special constructs in it,
|
|
|
2532 call the corresponding file handler. */
|
|
114
|
2533 GCPRO1 (abspath);
|
|
0
|
2534 handler = Ffind_file_name_handler (abspath, Qfile_regular_p);
|
|
114
|
2535 UNGCPRO;
|
|
0
|
2536 if (!NILP (handler))
|
|
|
2537 return call2 (handler, Qfile_regular_p, abspath);
|
|
|
2538
|
|
16
|
2539 if (stat ((char *) XSTRING_DATA (abspath), &st) < 0)
|
|
0
|
2540 return Qnil;
|
|
|
2541 return (st.st_mode & S_IFMT) == S_IFREG ? Qt : Qnil;
|
|
|
2542 }
|
|
|
2543
|
|
20
|
2544 DEFUN ("file-modes", Ffile_modes, 1, 1, 0, /*
|
|
0
|
2545 Return mode bits of FILE, as an integer.
|
|
20
|
2546 */
|
|
|
2547 (filename))
|
|
0
|
2548 {
|
|
124
|
2549 /* This function can GC. GC checked 1997.04.10. */
|
|
0
|
2550 Lisp_Object abspath;
|
|
|
2551 struct stat st;
|
|
|
2552 Lisp_Object handler;
|
|
|
2553 struct gcpro gcpro1;
|
|
151
|
2554
|
|
114
|
2555 GCPRO1 (current_buffer->directory);
|
|
0
|
2556 abspath = expand_and_dir_to_file (filename,
|
|
|
2557 current_buffer->directory);
|
|
|
2558 UNGCPRO;
|
|
|
2559
|
|
|
2560 /* If the file name has special constructs in it,
|
|
|
2561 call the corresponding file handler. */
|
|
|
2562 GCPRO1 (abspath);
|
|
|
2563 handler = Ffind_file_name_handler (abspath, Qfile_modes);
|
|
|
2564 UNGCPRO;
|
|
|
2565 if (!NILP (handler))
|
|
|
2566 return call2 (handler, Qfile_modes, abspath);
|
|
|
2567
|
|
16
|
2568 if (stat ((char *) XSTRING_DATA (abspath), &st) < 0)
|
|
0
|
2569 return Qnil;
|
|
211
|
2570 /* Syncing with FSF 19.34.6 note: not in FSF, #if 0'ed out here. */
|
|
|
2571 #if 0
|
|
0
|
2572 #ifdef DOS_NT
|
|
100
|
2573 if (check_executable (XSTRING (abspath)->_data))
|
|
0
|
2574 st.st_mode |= S_IEXEC;
|
|
|
2575 #endif /* DOS_NT */
|
|
211
|
2576 #endif /* 0 */
|
|
0
|
2577
|
|
|
2578 return make_int (st.st_mode & 07777);
|
|
|
2579 }
|
|
|
2580
|
|
20
|
2581 DEFUN ("set-file-modes", Fset_file_modes, 2, 2, 0, /*
|
|
0
|
2582 Set mode bits of FILE to MODE (an integer).
|
|
|
2583 Only the 12 low bits of MODE are used.
|
|
20
|
2584 */
|
|
|
2585 (filename, mode))
|
|
0
|
2586 {
|
|
124
|
2587 /* This function can GC. GC checked 1997.04.10. */
|
|
0
|
2588 Lisp_Object abspath;
|
|
|
2589 Lisp_Object handler;
|
|
114
|
2590 struct gcpro gcpro1;
|
|
151
|
2591
|
|
114
|
2592 GCPRO1 (current_buffer->directory);
|
|
0
|
2593 abspath = Fexpand_file_name (filename, current_buffer->directory);
|
|
116
|
2594 UNGCPRO;
|
|
|
2595
|
|
70
|
2596 CHECK_INT (mode);
|
|
44
|
2597
|
|
0
|
2598 /* If the file name has special constructs in it,
|
|
|
2599 call the corresponding file handler. */
|
|
|
2600 GCPRO1 (abspath);
|
|
|
2601 handler = Ffind_file_name_handler (abspath, Qset_file_modes);
|
|
|
2602 UNGCPRO;
|
|
|
2603 if (!NILP (handler))
|
|
|
2604 return call3 (handler, Qset_file_modes, abspath, mode);
|
|
|
2605
|
|
16
|
2606 if (chmod ((char *) XSTRING_DATA (abspath), XINT (mode)) < 0)
|
|
0
|
2607 report_file_error ("Doing chmod", Fcons (abspath, Qnil));
|
|
|
2608
|
|
|
2609 return Qnil;
|
|
|
2610 }
|
|
|
2611
|
|
20
|
2612 DEFUN ("set-default-file-modes", Fset_default_file_modes, 1, 1, 0, /*
|
|
0
|
2613 Set the file permission bits for newly created files.
|
|
|
2614 MASK should be an integer; if a permission's bit in MASK is 1,
|
|
|
2615 subsequently created files will not have that permission enabled.
|
|
|
2616 Only the low 9 bits are used.
|
|
|
2617 This setting is inherited by subprocesses.
|
|
20
|
2618 */
|
|
|
2619 (mode))
|
|
0
|
2620 {
|
|
|
2621 CHECK_INT (mode);
|
|
151
|
2622
|
|
0
|
2623 umask ((~ XINT (mode)) & 0777);
|
|
|
2624
|
|
|
2625 return Qnil;
|
|
|
2626 }
|
|
|
2627
|
|
20
|
2628 DEFUN ("default-file-modes", Fdefault_file_modes, 0, 0, 0, /*
|
|
0
|
2629 Return the default file protection for created files.
|
|
|
2630 The umask value determines which permissions are enabled in newly
|
|
|
2631 created files. If a permission's bit in the umask is 1, subsequently
|
|
|
2632 created files will not have that permission enabled.
|
|
20
|
2633 */
|
|
|
2634 ())
|
|
0
|
2635 {
|
|
|
2636 int mode;
|
|
|
2637
|
|
|
2638 mode = umask (0);
|
|
|
2639 umask (mode);
|
|
|
2640
|
|
|
2641 return make_int ((~ mode) & 0777);
|
|
|
2642 }
|
|
|
2643
|
|
20
|
2644 DEFUN ("unix-sync", Funix_sync, 0, 0, "", /*
|
|
0
|
2645 Tell Unix to finish all pending disk updates.
|
|
20
|
2646 */
|
|
|
2647 ())
|
|
0
|
2648 {
|
|
100
|
2649 #ifndef WINDOWSNT
|
|
0
|
2650 sync ();
|
|
100
|
2651 #endif
|
|
0
|
2652 return Qnil;
|
|
|
2653 }
|
|
|
2654
|
|
|
2655
|
|
20
|
2656 DEFUN ("file-newer-than-file-p", Ffile_newer_than_file_p, 2, 2, 0, /*
|
|
0
|
2657 Return t if file FILE1 is newer than file FILE2.
|
|
|
2658 If FILE1 does not exist, the answer is nil;
|
|
|
2659 otherwise, if FILE2 does not exist, the answer is t.
|
|
20
|
2660 */
|
|
|
2661 (file1, file2))
|
|
0
|
2662 {
|
|
124
|
2663 /* This function can GC. GC checked 1997.04.10. */
|
|
0
|
2664 Lisp_Object abspath1, abspath2;
|
|
|
2665 struct stat st;
|
|
|
2666 int mtime1;
|
|
|
2667 Lisp_Object handler;
|
|
114
|
2668 struct gcpro gcpro1, gcpro2, gcpro3;
|
|
0
|
2669
|
|
|
2670 CHECK_STRING (file1);
|
|
|
2671 CHECK_STRING (file2);
|
|
|
2672
|
|
|
2673 abspath1 = Qnil;
|
|
114
|
2674 abspath2 = Qnil;
|
|
|
2675
|
|
|
2676 GCPRO3 (abspath1, abspath2, current_buffer->directory);
|
|
|
2677 abspath1 = expand_and_dir_to_file (file1, current_buffer->directory);
|
|
|
2678 abspath2 = expand_and_dir_to_file (file2, current_buffer->directory);
|
|
0
|
2679
|
|
|
2680 /* If the file name has special constructs in it,
|
|
|
2681 call the corresponding file handler. */
|
|
|
2682 handler = Ffind_file_name_handler (abspath1, Qfile_newer_than_file_p);
|
|
|
2683 if (NILP (handler))
|
|
|
2684 handler = Ffind_file_name_handler (abspath2, Qfile_newer_than_file_p);
|
|
|
2685 UNGCPRO;
|
|
|
2686 if (!NILP (handler))
|
|
|
2687 return call3 (handler, Qfile_newer_than_file_p, abspath1,
|
|
|
2688 abspath2);
|
|
|
2689
|
|
16
|
2690 if (stat ((char *) XSTRING_DATA (abspath1), &st) < 0)
|
|
0
|
2691 return Qnil;
|
|
|
2692
|
|
|
2693 mtime1 = st.st_mtime;
|
|
|
2694
|
|
16
|
2695 if (stat ((char *) XSTRING_DATA (abspath2), &st) < 0)
|
|
0
|
2696 return Qt;
|
|
|
2697
|
|
|
2698 return (mtime1 > st.st_mtime) ? Qt : Qnil;
|
|
|
2699 }
|
|
|
2700
|
|
|
2701
|
|
|
2702 #ifdef DOS_NT
|
|
|
2703 Lisp_Object Qfind_buffer_file_type;
|
|
211
|
2704
|
|
|
2705 /* Return 1 if buffer is text, 0 if binary. */
|
|
|
2706 static int
|
|
|
2707 decide_buffer_type (unsigned char * buffer, int nbytes)
|
|
|
2708 {
|
|
|
2709 /* Buffer is binary if we find any LF chars not preceeded by CR or if
|
|
|
2710 the buffer doesn't contain at least 1 line. */
|
|
|
2711 unsigned lines = 0;
|
|
|
2712 unsigned char *p, *q;
|
|
|
2713
|
|
|
2714 for (p = buffer; nbytes > 0 && (q = memchr (p, '\n', nbytes)) != NULL;
|
|
|
2715 p = q + 1 )
|
|
|
2716 {
|
|
|
2717 nbytes -= (q + 1 - p);
|
|
|
2718 lines++;
|
|
|
2719 if (q > buffer && q[-1] != '\r')
|
|
|
2720 return 0;
|
|
|
2721 }
|
|
|
2722
|
|
|
2723 /* If we haven't seen any line endings yet, return -1 (meaning type is
|
|
|
2724 undecided) so we can examine the next bufferful as well. */
|
|
|
2725 return (lines > 0) ? 1 : -1;
|
|
|
2726 }
|
|
|
2727
|
|
|
2728 /* XEmacs addition: like decide_buffer_type(), but working on a XEmacs buffer:
|
|
|
2729 first arg is a byte index position instead of a char pointer;
|
|
|
2730 we check each char sequentially. --marcpa */
|
|
|
2731 static int
|
|
|
2732 buf_decide_buffer_type (struct buffer *buf, Bytind start, int nbytes)
|
|
|
2733 {
|
|
|
2734 /* Buffer is binary if we find any LF chars not preceeded by CR or if
|
|
|
2735 the buffer doesn't contain at least 1 line. */
|
|
|
2736 unsigned lines = 0;
|
|
|
2737 Bytind cur = start;
|
|
|
2738
|
|
|
2739 while (nbytes)
|
|
|
2740 {
|
|
|
2741 if (BI_BUF_FETCH_CHAR(buf, cur) == '\n')
|
|
|
2742 {
|
|
|
2743 lines++;
|
|
|
2744 if (cur != start && BI_BUF_FETCH_CHAR(buf, cur - 1) != '\r')
|
|
|
2745 return 0;
|
|
|
2746 }
|
|
|
2747 nbytes--;
|
|
|
2748 }
|
|
|
2749
|
|
|
2750 /* If we haven't seen any line endings yet, return -1 (meaning type is
|
|
|
2751 undecided) so we can examine the next bufferful as well. */
|
|
|
2752 return (lines > 0) ? 1 : -1;
|
|
|
2753 }
|
|
0
|
2754 #endif /* DOS_NT */
|
|
|
2755
|
|
2
|
2756 /* Stack sizes > 2**16 is a good way to elicit compiler bugs */
|
|
|
2757 /* #define READ_BUF_SIZE (2 << 16) */
|
|
|
2758 #define READ_BUF_SIZE (1 << 15)
|
|
0
|
2759
|
|
20
|
2760 DEFUN ("insert-file-contents-internal",
|
|
70
|
2761 Finsert_file_contents_internal, 1, 7, 0, /*
|
|
|
2762 Insert contents of file FILENAME after point; no coding-system frobbing.
|
|
|
2763 This function is identical to `insert-file-contents' except for the
|
|
|
2764 handling of the CODESYS and USED-CODESYS arguments under
|
|
|
2765 XEmacs/Mule. (When Mule support is not present, both functions are
|
|
|
2766 identical and ignore the CODESYS and USED-CODESYS arguments.)
|
|
|
2767
|
|
|
2768 If support for Mule exists in this Emacs, the file is decoded according
|
|
|
2769 to CODESYS; if omitted, no conversion happens. If USED-CODESYS is non-nil,
|
|
|
2770 it should be a symbol, and the actual coding system that was used for the
|
|
|
2771 decoding is stored into it. It will in general be different from CODESYS
|
|
|
2772 if CODESYS specifies automatic encoding detection or end-of-line detection.
|
|
|
2773
|
|
|
2774 Currently BEG and END refer to byte positions (as opposed to character
|
|
|
2775 positions), even in Mule. (Fixing this is very difficult.)
|
|
20
|
2776 */
|
|
70
|
2777 (filename, visit, beg, end, replace, codesys, used_codesys))
|
|
0
|
2778 {
|
|
116
|
2779 /* This function can call lisp */
|
|
|
2780 /* #### dmoore - this function hasn't been checked for gc recently */
|
|
0
|
2781 struct stat st;
|
|
|
2782 int fd;
|
|
|
2783 int saverrno = 0;
|
|
|
2784 Charcount inserted = 0;
|
|
|
2785 int speccount;
|
|
114
|
2786 struct gcpro gcpro1, gcpro2, gcpro3, gcpro4, gcpro5;
|
|
0
|
2787 Lisp_Object handler = Qnil, val;
|
|
|
2788 int total;
|
|
|
2789 Bufbyte read_buf[READ_BUF_SIZE];
|
|
|
2790 int mc_count;
|
|
|
2791 struct buffer *buf = current_buffer;
|
|
114
|
2792 Lisp_Object curbuf;
|
|
0
|
2793 int not_regular = 0;
|
|
211
|
2794 #ifdef DOS_NT
|
|
|
2795 int crlf_conversion_required = 0;
|
|
|
2796 unsigned crlf_count = 0;
|
|
|
2797 unsigned lf_count = 0;
|
|
|
2798 #endif
|
|
0
|
2799
|
|
|
2800 if (buf->base_buffer && ! NILP (visit))
|
|
|
2801 error ("Cannot do file visiting in an indirect buffer");
|
|
|
2802
|
|
|
2803 /* No need to call Fbarf_if_buffer_read_only() here.
|
|
|
2804 That's called in begin_multiple_change() or wherever. */
|
|
|
2805
|
|
|
2806 val = Qnil;
|
|
|
2807
|
|
114
|
2808 /* #### dmoore - should probably check in various places to see if
|
|
|
2809 curbuf was killed and if so signal an error? */
|
|
|
2810
|
|
|
2811 XSETBUFFER (curbuf, buf);
|
|
|
2812
|
|
|
2813 GCPRO5 (filename, val, visit, handler, curbuf);
|
|
151
|
2814
|
|
0
|
2815 mc_count = (NILP (replace)) ?
|
|
|
2816 begin_multiple_change (buf, BUF_PT (buf), BUF_PT (buf)) :
|
|
|
2817 begin_multiple_change (buf, BUF_BEG (buf), BUF_Z (buf));
|
|
|
2818
|
|
|
2819 speccount = specpdl_depth (); /* begin_multiple_change also adds
|
|
|
2820 an unwind_protect */
|
|
|
2821
|
|
|
2822 filename = Fexpand_file_name (filename, Qnil);
|
|
|
2823
|
|
|
2824 /* If the file name has special constructs in it,
|
|
|
2825 call the corresponding file handler. */
|
|
|
2826 handler = Ffind_file_name_handler (filename, Qinsert_file_contents);
|
|
|
2827 if (!NILP (handler))
|
|
|
2828 {
|
|
74
|
2829 val = call6 (handler, Qinsert_file_contents, filename,
|
|
|
2830 visit, beg, end, replace);
|
|
0
|
2831 goto handled;
|
|
|
2832 }
|
|
|
2833
|
|
70
|
2834 #ifdef MULE
|
|
|
2835 if (!NILP (used_codesys))
|
|
|
2836 CHECK_SYMBOL (used_codesys);
|
|
|
2837 #endif
|
|
|
2838
|
|
0
|
2839 if ( (!NILP (beg) || !NILP (end)) && !NILP (visit) )
|
|
|
2840 error ("Attempt to visit less than an entire file");
|
|
151
|
2841
|
|
0
|
2842 fd = -1;
|
|
|
2843
|
|
|
2844 #ifndef APOLLO
|
|
16
|
2845 if (stat ((char *) XSTRING_DATA (filename), &st) < 0)
|
|
0
|
2846 #else /* APOLLO */
|
|
16
|
2847 if ((fd = open ((char *) XSTRING_DATA (filename), O_RDONLY, 0)) < 0
|
|
0
|
2848 || fstat (fd, &st) < 0)
|
|
|
2849 #endif /* APOLLO */
|
|
|
2850 {
|
|
|
2851 if (fd >= 0) close (fd);
|
|
|
2852 badopen:
|
|
|
2853 if (NILP (visit))
|
|
|
2854 report_file_error ("Opening input file",
|
|
|
2855 Fcons (filename, Qnil));
|
|
|
2856 st.st_mtime = -1;
|
|
|
2857 goto notfound;
|
|
|
2858 }
|
|
|
2859
|
|
|
2860 #ifdef S_IFREG
|
|
209
|
2861 /* Signal an error if we are accessing a non-regular file, with
|
|
|
2862 REPLACE, BEG or END being non-nil. */
|
|
0
|
2863 if (!S_ISREG (st.st_mode))
|
|
|
2864 {
|
|
173
|
2865 not_regular = 1;
|
|
|
2866
|
|
|
2867 if (!NILP (visit))
|
|
|
2868 goto notfound;
|
|
|
2869
|
|
|
2870 if (!NILP (replace) || !NILP (beg) || !NILP (end))
|
|
0
|
2871 {
|
|
|
2872 end_multiple_change (buf, mc_count);
|
|
|
2873
|
|
|
2874 return Fsignal (Qfile_error,
|
|
|
2875 list2 (build_translated_string("not a regular file"),
|
|
|
2876 filename));
|
|
|
2877 }
|
|
|
2878 }
|
|
183
|
2879 #endif /* S_IFREG */
|
|
0
|
2880
|
|
173
|
2881 if (!NILP (beg))
|
|
|
2882 CHECK_INT (beg);
|
|
|
2883 else
|
|
|
2884 beg = Qzero;
|
|
|
2885
|
|
|
2886 if (!NILP (end))
|
|
|
2887 CHECK_INT (end);
|
|
|
2888
|
|
209
|
2889 /* Here, we should call some form of interruptable_open, so the user
|
|
|
2890 can quit gracefully when opening named pipes. interruptable_open
|
|
|
2891 should be just like sys_open in sysdep.c, only it would call QUIT
|
|
|
2892 if interrupted by EINTR. */
|
|
0
|
2893 if (fd < 0)
|
|
16
|
2894 if ((fd = open ((char *) XSTRING_DATA (filename), O_RDONLY, 0)) < 0)
|
|
0
|
2895 goto badopen;
|
|
|
2896
|
|
|
2897 /* Replacement should preserve point as it preserves markers. */
|
|
|
2898 if (!NILP (replace))
|
|
|
2899 record_unwind_protect (restore_point_unwind, Fpoint_marker (Qnil, Qnil));
|
|
|
2900
|
|
|
2901 record_unwind_protect (close_file_unwind, make_int (fd));
|
|
|
2902
|
|
|
2903 /* Supposedly happens on VMS. */
|
|
|
2904 if (st.st_size < 0)
|
|
|
2905 error ("File size is negative");
|
|
|
2906
|
|
|
2907 if (NILP (end))
|
|
|
2908 {
|
|
173
|
2909 if (!not_regular)
|
|
|
2910 {
|
|
|
2911 end = make_int (st.st_size);
|
|
|
2912 if (XINT (end) != st.st_size)
|
|
|
2913 error ("Maximum buffer size exceeded");
|
|
|
2914 }
|
|
211
|
2915
|
|
|
2916 #ifdef DOS_NT
|
|
|
2917 /* Permit old behaviour if desired. */
|
|
|
2918 if (NILP (Vinsert_file_contents_allow_replace) && !NILP (replace))
|
|
|
2919 {
|
|
|
2920 replace = Qnil;
|
|
|
2921 /* Surely this was never right! */
|
|
|
2922 /* XSETFASTINT (beg, 0);
|
|
|
2923 XSETFASTINT (end, st.st_size); */
|
|
|
2924 buffer_delete_range (buf, BUF_BEGV(buf), BUF_ZV(buf),
|
|
|
2925 !NILP (visit) ? INSDEL_NO_LOCKING : 0);
|
|
|
2926 }
|
|
|
2927 #endif /* DOS_NT */
|
|
0
|
2928 }
|
|
|
2929
|
|
|
2930 /* If requested, replace the accessible part of the buffer
|
|
|
2931 with the file contents. Avoid replacing text at the
|
|
|
2932 beginning or end of the buffer that matches the file contents;
|
|
|
2933 that preserves markers pointing to the unchanged parts. */
|
|
211
|
2934 #if !defined (MULE)
|
|
0
|
2935 /* The replace-mode code currently only works when the assumption
|
|
211
|
2936 'one byte == one char' holds true. This fails Mule because
|
|
|
2937 files may contain multibyte characters. It holds under Windows NT
|
|
|
2938 provided we convert CRLF into LF. */
|
|
0
|
2939 # define FSFMACS_SPEEDY_INSERT
|
|
|
2940 #endif
|
|
|
2941 #ifndef FSFMACS_SPEEDY_INSERT
|
|
|
2942 if (!NILP (replace))
|
|
|
2943 {
|
|
|
2944 buffer_delete_range (buf, BUF_BEG (buf), BUF_Z (buf),
|
|
|
2945 !NILP (visit) ? INSDEL_NO_LOCKING : 0);
|
|
|
2946 }
|
|
|
2947 #else /* FSFMACS_SPEEDY_INSERT */
|
|
|
2948 if (!NILP (replace))
|
|
|
2949 {
|
|
|
2950 char buffer[1 << 14];
|
|
|
2951 Bufpos same_at_start = BUF_BEGV (buf);
|
|
|
2952 Bufpos same_at_end = BUF_ZV (buf);
|
|
|
2953 int overlap;
|
|
211
|
2954 #ifdef DOS_NT
|
|
|
2955 /* Syncing with 19.34.6 note: same_at_start_in_file and
|
|
|
2956 same_at_end_in_file are not in XEmacs 20.4.
|
|
|
2957 First try to introduce them as-is and see what happens.
|
|
|
2958 Might be necessary to use constructs like
|
|
|
2959 st.st_size - (BUF_ZV (buf) - same_at_end)
|
|
|
2960 instead.
|
|
|
2961 --marcpa
|
|
|
2962 */
|
|
|
2963 /* Offset into the file where discrepancy begins. */
|
|
|
2964 int same_at_start_in_file = 0;
|
|
|
2965 /* Offset into the file where discrepancy ends. */
|
|
|
2966 int same_at_end_in_file = st.st_size;
|
|
|
2967 /* DOS_NT only: is there a `\r' character left in the buffer? */
|
|
|
2968 int cr_left_in_buffer = 0;
|
|
|
2969 /* DOS_NT only: was `\n' the first character in previous bufferful? */
|
|
|
2970 int last_was_lf = 0;
|
|
|
2971
|
|
|
2972 /* Demacs 1.1.1 91/10/16 HIRANO Satoshi, MW July 1993 */
|
|
|
2973 /* Determine file type (text/binary) from its name.
|
|
|
2974 Note that the buffer_file_type changes here when the file
|
|
|
2975 being inserted is not of the same type as the original buffer. */
|
|
|
2976 current_buffer->buffer_file_type = call1 (Qfind_buffer_file_type, filename);
|
|
|
2977 if (NILP (current_buffer->buffer_file_type))
|
|
|
2978 crlf_conversion_required = 1;
|
|
|
2979 else if (current_buffer->buffer_file_type != Qt)
|
|
|
2980 /* Use heuristic to decide whether file is text or binary (based
|
|
|
2981 on the first bufferful) if buffer-file-type is not nil or t.
|
|
|
2982 If no decision is made (because no line endings were ever
|
|
|
2983 seen) then let buffer-file-type default to nil. */
|
|
|
2984 crlf_conversion_required = -1;
|
|
|
2985 #endif /* DOS_NT */
|
|
0
|
2986
|
|
|
2987 /* Count how many chars at the start of the file
|
|
|
2988 match the text at the beginning of the buffer. */
|
|
|
2989 while (1)
|
|
|
2990 {
|
|
|
2991 int nread;
|
|
|
2992 Bufpos bufpos;
|
|
211
|
2993 #ifdef DOS_NT
|
|
|
2994 if (cr_left_in_buffer)
|
|
|
2995 {
|
|
|
2996 nread = read_allowing_quit (fd, buffer + 1, sizeof(buffer) - 1);
|
|
|
2997 cr_left_in_buffer = 0;
|
|
|
2998 if (nread >= 0)
|
|
|
2999 nread++;
|
|
|
3000 }
|
|
|
3001 else
|
|
|
3002 #endif /* DOS_NT */
|
|
0
|
3003 nread = read_allowing_quit (fd, buffer, sizeof buffer);
|
|
|
3004 if (nread < 0)
|
|
|
3005 error ("IO error reading %s: %s",
|
|
16
|
3006 XSTRING_DATA (filename), strerror (errno));
|
|
0
|
3007 else if (nread == 0)
|
|
|
3008 break;
|
|
|
3009 bufpos = 0;
|
|
211
|
3010 #ifdef DOS_NT
|
|
|
3011 /* If requested, we do a simple check on the first bufferful
|
|
|
3012 to decide whether the file is binary or text. (If text, we
|
|
|
3013 count LF and CRLF occurences to determine whether the file
|
|
|
3014 was in Unix or DOS format.) */
|
|
|
3015 if (crlf_conversion_required < 0)
|
|
|
3016 {
|
|
|
3017 crlf_conversion_required = decide_buffer_type (buffer, nread);
|
|
|
3018 current_buffer->buffer_file_type =
|
|
|
3019 crlf_conversion_required ? Qnil : Qt;
|
|
|
3020 }
|
|
|
3021
|
|
|
3022 /* DOS_NT text files require that we ignore a `\r' before a `\n'. */
|
|
|
3023 if (crlf_conversion_required > 0)
|
|
|
3024 while (bufpos < nread && same_at_start < BUF_ZV (buf))
|
|
|
3025 {
|
|
|
3026 int filec = buffer[bufpos];
|
|
|
3027 int bufc = BUF_FETCH_CHAR (buf, same_at_start);
|
|
|
3028
|
|
|
3029 if (filec == '\n')
|
|
|
3030 lf_count++;
|
|
|
3031
|
|
|
3032 if (filec == bufc)
|
|
|
3033 same_at_start++, bufpos++, same_at_start_in_file++;
|
|
|
3034 else if (filec == '\r' && bufc == '\n')
|
|
|
3035 {
|
|
|
3036 /* If the `\r' is the last character in this buffer,
|
|
|
3037 it will be examined with the next bufferful. */
|
|
|
3038 if (bufpos == nread)
|
|
|
3039 {
|
|
|
3040 buffer[0] = filec;
|
|
|
3041 cr_left_in_buffer = 1;
|
|
|
3042 }
|
|
|
3043 else if (buffer[bufpos + 1] == bufc)
|
|
|
3044 {
|
|
|
3045 bufpos += 2;
|
|
|
3046 same_at_start_in_file += 2;
|
|
|
3047 same_at_start++;
|
|
|
3048 crlf_count++;
|
|
|
3049 lf_count++;
|
|
|
3050 }
|
|
|
3051 else
|
|
|
3052 break;
|
|
|
3053 }
|
|
|
3054 else
|
|
|
3055 break;
|
|
|
3056 }
|
|
|
3057 else
|
|
|
3058 #endif /* DOS_NT */
|
|
0
|
3059 while (bufpos < nread && same_at_start < BUF_ZV (buf)
|
|
|
3060 && BUF_FETCH_CHAR (buf, same_at_start) == buffer[bufpos])
|
|
211
|
3061 #ifdef DOS_NT
|
|
|
3062 same_at_start_in_file++,
|
|
|
3063 #endif
|
|
0
|
3064 same_at_start++, bufpos++;
|
|
|
3065 /* If we found a discrepancy, stop the scan.
|
|
211
|
3066 Otherwise loop around and scan the next bufferful. */
|
|
0
|
3067 if (bufpos != nread)
|
|
|
3068 break;
|
|
|
3069 }
|
|
|
3070 /* If the file matches the buffer completely,
|
|
|
3071 there's no need to replace anything. */
|
|
211
|
3072 #ifdef DOS_NT
|
|
|
3073 if (same_at_start_in_file == st.st_size)
|
|
|
3074 #else
|
|
0
|
3075 if (same_at_start - BUF_BEGV (buf) == st.st_size)
|
|
211
|
3076 #endif /* DOS_NT */
|
|
0
|
3077 {
|
|
|
3078 close (fd);
|
|
|
3079 unbind_to (speccount, Qnil);
|
|
|
3080 /* Truncate the buffer to the size of the file. */
|
|
|
3081 buffer_delete_range (buf, same_at_start, same_at_end,
|
|
|
3082 !NILP (visit) ? INSDEL_NO_LOCKING : 0);
|
|
|
3083 goto handled;
|
|
|
3084 }
|
|
|
3085 /* Count how many chars at the end of the file
|
|
|
3086 match the text at the end of the buffer. */
|
|
|
3087 while (1)
|
|
|
3088 {
|
|
|
3089 int total_read, nread;
|
|
|
3090 Bufpos bufpos, curpos, trial;
|
|
|
3091
|
|
|
3092 /* At what file position are we now scanning? */
|
|
211
|
3093 #ifdef DOS_NT
|
|
|
3094 curpos = same_at_end_in_file;
|
|
|
3095 #else
|
|
0
|
3096 curpos = st.st_size - (BUF_ZV (buf) - same_at_end);
|
|
211
|
3097 #endif /* DOS_NT */
|
|
0
|
3098 /* If the entire file matches the buffer tail, stop the scan. */
|
|
|
3099 if (curpos == 0)
|
|
|
3100 break;
|
|
|
3101 /* How much can we scan in the next step? */
|
|
|
3102 trial = min (curpos, sizeof buffer);
|
|
|
3103 if (lseek (fd, curpos - trial, 0) < 0)
|
|
|
3104 report_file_error ("Setting file position",
|
|
|
3105 Fcons (filename, Qnil));
|
|
|
3106
|
|
|
3107 total_read = 0;
|
|
|
3108 while (total_read < trial)
|
|
|
3109 {
|
|
|
3110 nread = read_allowing_quit (fd, buffer + total_read,
|
|
|
3111 trial - total_read);
|
|
|
3112 if (nread <= 0)
|
|
|
3113 error ("IO error reading %s: %s",
|
|
16
|
3114 XSTRING_DATA (filename), strerror (errno));
|
|
0
|
3115 total_read += nread;
|
|
|
3116 }
|
|
211
|
3117 /* Scan this bufferful from the end, comparing with
|
|
0
|
3118 the Emacs buffer. */
|
|
|
3119 bufpos = total_read;
|
|
211
|
3120 #ifdef DOS_NT
|
|
|
3121 /* DOS_NT text files require that we ignore a `\r' before a `\n'. */
|
|
|
3122 if (crlf_conversion_required)
|
|
|
3123 #endif /* DOS_NT */
|
|
0
|
3124 /* Compare with same_at_start to avoid counting some buffer text
|
|
|
3125 as matching both at the file's beginning and at the end. */
|
|
211
|
3126 #if !defined(DOS_NT)
|
|
0
|
3127 while (bufpos > 0 && same_at_end > same_at_start
|
|
|
3128 && BUF_FETCH_CHAR (buf, same_at_end - 1) ==
|
|
|
3129 buffer[bufpos - 1])
|
|
|
3130 same_at_end--, bufpos--;
|
|
211
|
3131 #else /* DOS_NT */
|
|
|
3132 while (bufpos > 0 && same_at_end > same_at_start
|
|
|
3133 && same_at_end_in_file > same_at_start_in_file)
|
|
|
3134 {
|
|
|
3135 int filec = buffer[bufpos - 1];
|
|
|
3136 int bufc = BUF_FETCH_CHAR (buf, same_at_end - 1);
|
|
|
3137
|
|
|
3138 /* Account for `\n' in previous bufferful. */
|
|
|
3139 if (last_was_lf && filec == '\r')
|
|
|
3140 {
|
|
|
3141 same_at_end_in_file--, bufpos--;
|
|
|
3142 last_was_lf = 0;
|
|
|
3143 crlf_count++;
|
|
|
3144 }
|
|
|
3145 else if (filec == bufc)
|
|
|
3146 {
|
|
|
3147 last_was_lf = 0;
|
|
|
3148 same_at_end--, same_at_end_in_file--, bufpos--;
|
|
|
3149 if (bufc == '\n')
|
|
|
3150 {
|
|
|
3151 lf_count++;
|
|
|
3152 if (bufpos <= 0)
|
|
|
3153 last_was_lf = 1;
|
|
|
3154 else if (same_at_end_in_file <= same_at_start_in_file)
|
|
|
3155 break;
|
|
|
3156 else if (buffer[bufpos - 1] == '\r')
|
|
|
3157 same_at_end_in_file--, bufpos--, crlf_count++;
|
|
|
3158 }
|
|
|
3159 }
|
|
|
3160 else
|
|
|
3161 {
|
|
|
3162 last_was_lf = 0;
|
|
|
3163 break;
|
|
|
3164 }
|
|
|
3165 }
|
|
|
3166 else
|
|
|
3167 while (bufpos > 0 && same_at_end > same_at_start
|
|
|
3168 && same_at_end_in_file > same_at_start_in_file
|
|
|
3169 && BUF_FETCH_CHAR (buf, same_at_end - 1) ==
|
|
|
3170 buffer[bufpos - 1])
|
|
|
3171 same_at_end--, same_at_end_in_file--, bufpos--;
|
|
|
3172 #endif /* !defined(DOS_NT) */
|
|
0
|
3173 /* If we found a discrepancy, stop the scan.
|
|
211
|
3174 Otherwise loop around and scan the preceding bufferful. */
|
|
0
|
3175 if (bufpos != 0)
|
|
|
3176 break;
|
|
|
3177 /* If display current starts at beginning of line,
|
|
|
3178 keep it that way. */
|
|
|
3179 if (XBUFFER (XWINDOW (Fselected_window (Qnil))->buffer) == buf)
|
|
|
3180 XWINDOW (Fselected_window (Qnil))->start_at_line_beg =
|
|
|
3181 !NILP (Fbolp (make_buffer (buf)));
|
|
|
3182 }
|
|
|
3183
|
|
|
3184 /* Don't try to reuse the same piece of text twice. */
|
|
|
3185 overlap = same_at_start - BUF_BEGV (buf) -
|
|
|
3186 (same_at_end + st.st_size - BUF_ZV (buf));
|
|
|
3187 if (overlap > 0)
|
|
|
3188 same_at_end += overlap;
|
|
|
3189
|
|
|
3190 /* Arrange to read only the nonmatching middle part of the file. */
|
|
211
|
3191 #ifdef DOS_NT
|
|
|
3192 beg = make_int (same_at_start_in_file);
|
|
|
3193 end = make_int (same_at_end_in_file);
|
|
|
3194 #else
|
|
0
|
3195 beg = make_int (same_at_start - BUF_BEGV (buf));
|
|
|
3196 end = make_int (st.st_size - (BUF_ZV (buf) - same_at_end));
|
|
211
|
3197 #endif /* DOS_NT */
|
|
0
|
3198
|
|
|
3199 buffer_delete_range (buf, same_at_start, same_at_end,
|
|
|
3200 !NILP (visit) ? INSDEL_NO_LOCKING : 0);
|
|
|
3201 /* Insert from the file at the proper position. */
|
|
|
3202 BUF_SET_PT (buf, same_at_start);
|
|
|
3203 }
|
|
|
3204 #endif /* FSFMACS_SPEEDY_INSERT */
|
|
|
3205
|
|
173
|
3206 if (!not_regular)
|
|
|
3207 {
|
|
|
3208 Lisp_Object temp;
|
|
|
3209
|
|
|
3210 total = XINT (end) - XINT (beg);
|
|
|
3211
|
|
|
3212 /* Make sure point-max won't overflow after this insertion. */
|
|
|
3213 XSETINT (temp, total);
|
|
|
3214 if (total != XINT (temp))
|
|
|
3215 error ("Maximum buffer size exceeded");
|
|
|
3216 }
|
|
|
3217 else
|
|
|
3218 /* For a special file, all we can do is guess. */
|
|
|
3219 total = READ_BUF_SIZE;
|
|
0
|
3220
|
|
|
3221 if (XINT (beg) != 0
|
|
|
3222 #ifdef FSFMACS_SPEEDY_INSERT
|
|
|
3223 /* why was this here? asked jwz. The reason is that the replace-mode
|
|
|
3224 connivings above will normally put the file pointer other than
|
|
|
3225 where it should be. */
|
|
|
3226 || !NILP (replace)
|
|
|
3227 #endif /* !FSFMACS_SPEEDY_INSERT */
|
|
|
3228 )
|
|
|
3229 {
|
|
|
3230 if (lseek (fd, XINT (beg), 0) < 0)
|
|
|
3231 report_file_error ("Setting file position",
|
|
|
3232 Fcons (filename, Qnil));
|
|
|
3233 }
|
|
|
3234
|
|
|
3235 {
|
|
|
3236 Bufpos cur_point = BUF_PT (buf);
|
|
|
3237 struct gcpro ngcpro1;
|
|
|
3238 Lisp_Object stream = make_filedesc_input_stream (fd, 0, total,
|
|
|
3239 LSTR_ALLOW_QUIT);
|
|
|
3240
|
|
|
3241 NGCPRO1 (stream);
|
|
|
3242 Lstream_set_buffering (XLSTREAM (stream), LSTREAM_BLOCKN_BUFFERED, 65536);
|
|
70
|
3243 #ifdef MULE
|
|
|
3244 stream = make_decoding_input_stream
|
|
|
3245 (XLSTREAM (stream), Fget_coding_system (codesys));
|
|
|
3246 Lstream_set_character_mode (XLSTREAM (stream));
|
|
|
3247 Lstream_set_buffering (XLSTREAM (stream), LSTREAM_BLOCKN_BUFFERED, 65536);
|
|
183
|
3248 #endif /* MULE */
|
|
0
|
3249
|
|
|
3250 record_unwind_protect (close_stream_unwind, stream);
|
|
|
3251
|
|
16
|
3252 /* No need to limit the amount of stuff we attempt to read. (It would
|
|
|
3253 be incorrect, anyway, when Mule is enabled.) Instead, the limiting
|
|
|
3254 occurs inside of the filedesc stream. */
|
|
0
|
3255 while (1)
|
|
|
3256 {
|
|
|
3257 Bytecount this_len;
|
|
|
3258 Charcount cc_inserted;
|
|
|
3259
|
|
|
3260 QUIT;
|
|
|
3261 this_len = Lstream_read (XLSTREAM (stream), read_buf,
|
|
|
3262 sizeof (read_buf));
|
|
151
|
3263
|
|
0
|
3264 if (this_len <= 0)
|
|
|
3265 {
|
|
|
3266 if (this_len < 0)
|
|
|
3267 saverrno = errno;
|
|
|
3268 break;
|
|
|
3269 }
|
|
211
|
3270 #ifdef DOS_NT
|
|
|
3271 /* XEmacs (--marcpa) change: FSF does buffer_insert_raw_string_1() first
|
|
|
3272 then checks if conversion is needed, calling lisp
|
|
|
3273 (find-buffer-file-type) which can call a user-function that
|
|
|
3274 might look at the unconverted buffer to decide if
|
|
|
3275 conversion is needed.
|
|
|
3276 I removed the possibility for lisp functions called from
|
|
|
3277 find-buffer-file-type to look at the buffer's content, for
|
|
|
3278 simplicity reasons: it is easier to do the CRLF -> LF
|
|
|
3279 conversion on read_buf than on buffer contents because
|
|
|
3280 BUF_FETCH_CHAR does not return a pointer to an unsigned
|
|
|
3281 char memory location, and because we must cope with bytind
|
|
|
3282 VS bufpos in XEmacs, thus complicating crlf_to_lf().
|
|
|
3283 This decision (of doing Lstream_read(), crlf_to_lf() then
|
|
|
3284 buffer_insert_raw_string_1()) is debatable.
|
|
|
3285 --marcpa
|
|
|
3286 */
|
|
|
3287 /* Following FSF note no longer apply now. See comment above.
|
|
|
3288 --marcpa*/
|
|
|
3289 /* For compatability with earlier versions that did not support the
|
|
|
3290 REPLACE funtionality, we call find-buffer-file-type after inserting
|
|
|
3291 the contents to allow it to inspect the inserted data. (This was
|
|
|
3292 not intentional usage, but proved to be quite useful.) */
|
|
|
3293 if (NILP (replace))
|
|
|
3294 {
|
|
|
3295 /* Demacs 1.1.1 91/10/16 HIRANO Satoshi, MW July 1993 */
|
|
|
3296 /* Determine file type (text/binary) from its name.
|
|
|
3297 Note that the buffer_file_type changes here when the file
|
|
|
3298 being inserted is not of the same type as the original buffer. */
|
|
|
3299 current_buffer->buffer_file_type = call1 (Qfind_buffer_file_type, filename);
|
|
|
3300 if (NILP (current_buffer->buffer_file_type))
|
|
|
3301 crlf_conversion_required = 1;
|
|
|
3302 else if (current_buffer->buffer_file_type != Qt)
|
|
|
3303 /* Use heuristic to decide whether file is text or binary (based
|
|
|
3304 on the first bufferful) if buffer-file-type is not nil or t.
|
|
|
3305 If no decision is made (because no line endings were ever
|
|
|
3306 seen) then let buffer-file-type default to nil. */
|
|
|
3307 crlf_conversion_required = -1;
|
|
|
3308 }
|
|
|
3309
|
|
|
3310 /* If requested, we check the inserted data to decide whether the file
|
|
|
3311 is binary or text. (If text, we count LF and CRLF occurences to
|
|
|
3312 determine whether the file was in Unix or DOS format.) */
|
|
|
3313 if (crlf_conversion_required < 0)
|
|
|
3314 {
|
|
|
3315 crlf_conversion_required =
|
|
|
3316 decide_buffer_type (read_buf, this_len);
|
|
|
3317 current_buffer->buffer_file_type =
|
|
|
3318 crlf_conversion_required ? Qnil : Qt;
|
|
|
3319 }
|
|
|
3320
|
|
|
3321 /* Demacs 1.1.1 91/10/16 HIRANO Satoshi, MW July 1993 */
|
|
|
3322 /* Remove CRs from CR-LFs if the file is deemed to be a text file. */
|
|
|
3323 if (crlf_conversion_required)
|
|
|
3324 {
|
|
|
3325 int reduced_size
|
|
|
3326 = this_len - crlf_to_lf (this_len, read_buf,
|
|
|
3327 &lf_count);
|
|
|
3328 crlf_count += reduced_size;
|
|
|
3329 /* XEmacs (--marcpa) change: No need for this since we havent
|
|
|
3330 inserted in buffer yet. */
|
|
|
3331 #if 0
|
|
|
3332 ZV -= reduced_size;
|
|
|
3333 Z -= reduced_size;
|
|
|
3334 GPT -= reduced_size;
|
|
|
3335 GAP_SIZE += reduced_size;
|
|
|
3336 inserted -= reduced_size;
|
|
|
3337 #endif
|
|
|
3338 this_len -= reduced_size;
|
|
|
3339
|
|
|
3340 /* Change buffer_file_type back to binary if Unix eol format. */
|
|
|
3341 if (crlf_count == 0 && lf_count > 0)
|
|
|
3342 current_buffer->buffer_file_type = Qt;
|
|
|
3343 }
|
|
|
3344
|
|
|
3345 /* Make crlf_count and lf_count available for inspection. */
|
|
|
3346 Fset (intern ("buffer-file-lines"), make_int (lf_count));
|
|
|
3347 Fset (intern ("buffer-file-dos-lines"), make_int (crlf_count));
|
|
|
3348 #endif /* DOS_NT */
|
|
0
|
3349
|
|
|
3350 cc_inserted = buffer_insert_raw_string_1 (buf, cur_point, read_buf,
|
|
|
3351 this_len,
|
|
|
3352 !NILP (visit)
|
|
|
3353 ? INSDEL_NO_LOCKING : 0);
|
|
|
3354 inserted += cc_inserted;
|
|
|
3355 cur_point += cc_inserted;
|
|
|
3356 }
|
|
70
|
3357 #ifdef MULE
|
|
|
3358 if (!NILP (used_codesys))
|
|
|
3359 {
|
|
|
3360 Fset (used_codesys,
|
|
|
3361 XCODING_SYSTEM_NAME (decoding_stream_coding_system (XLSTREAM (stream))));
|
|
|
3362 }
|
|
183
|
3363 #endif /* MULE */
|
|
0
|
3364 NUNGCPRO;
|
|
|
3365 }
|
|
|
3366
|
|
|
3367 /* Close the file/stream */
|
|
|
3368 unbind_to (speccount, Qnil);
|
|
|
3369
|
|
|
3370 if (saverrno != 0)
|
|
|
3371 {
|
|
|
3372 error ("IO error reading %s: %s",
|
|
16
|
3373 XSTRING_DATA (filename), strerror (saverrno));
|
|
0
|
3374 }
|
|
|
3375
|
|
|
3376 notfound:
|
|
|
3377 handled:
|
|
|
3378
|
|
|
3379 end_multiple_change (buf, mc_count);
|
|
|
3380
|
|
|
3381 if (!NILP (visit))
|
|
|
3382 {
|
|
|
3383 if (!EQ (buf->undo_list, Qt))
|
|
|
3384 buf->undo_list = Qnil;
|
|
|
3385 #ifdef APOLLO
|
|
16
|
3386 stat ((char *) XSTRING_DATA (filename), &st);
|
|
0
|
3387 #endif
|
|
|
3388 if (NILP (handler))
|
|
|
3389 {
|
|
|
3390 buf->modtime = st.st_mtime;
|
|
|
3391 buf->filename = filename;
|
|
|
3392 /* XEmacs addition: */
|
|
|
3393 /* This function used to be in C, ostensibly so that
|
|
|
3394 it could be called here. But that's just silly.
|
|
|
3395 There's no reason C code can't call out to Lisp
|
|
|
3396 code, and it's a lot cleaner this way. */
|
|
|
3397 if (!NILP (Ffboundp (Qcompute_buffer_file_truename)))
|
|
|
3398 call1 (Qcompute_buffer_file_truename, make_buffer (buf));
|
|
|
3399 }
|
|
|
3400 BUF_SAVE_MODIFF (buf) = BUF_MODIFF (buf);
|
|
|
3401 buf->auto_save_modified = BUF_MODIFF (buf);
|
|
|
3402 buf->save_length = make_int (BUF_SIZE (buf));
|
|
|
3403 #ifdef CLASH_DETECTION
|
|
|
3404 if (NILP (handler))
|
|
|
3405 {
|
|
|
3406 if (!NILP (buf->file_truename))
|
|
|
3407 unlock_file (buf->file_truename);
|
|
|
3408 unlock_file (filename);
|
|
|
3409 }
|
|
|
3410 #endif /* CLASH_DETECTION */
|
|
|
3411 if (not_regular)
|
|
|
3412 RETURN_UNGCPRO (Fsignal (Qfile_error,
|
|
|
3413 list2 (build_string ("not a regular file"),
|
|
|
3414 filename)));
|
|
|
3415
|
|
|
3416 /* If visiting nonexistent file, return nil. */
|
|
|
3417 if (buf->modtime == -1)
|
|
|
3418 report_file_error ("Opening input file",
|
|
|
3419 list1 (filename));
|
|
|
3420 }
|
|
|
3421
|
|
|
3422 /* Decode file format */
|
|
|
3423 if (inserted > 0)
|
|
|
3424 {
|
|
151
|
3425 Lisp_Object insval = call3 (Qformat_decode,
|
|
0
|
3426 Qnil, make_int (inserted), visit);
|
|
|
3427 CHECK_INT (insval);
|
|
|
3428 inserted = XINT (insval);
|
|
|
3429 }
|
|
|
3430
|
|
|
3431 if (inserted > 0)
|
|
|
3432 {
|
|
|
3433 Lisp_Object p = Vafter_insert_file_functions;
|
|
|
3434 struct gcpro ngcpro1;
|
|
|
3435
|
|
|
3436 NGCPRO1 (p);
|
|
|
3437 while (!NILP (p))
|
|
|
3438 {
|
|
|
3439 Lisp_Object insval =
|
|
|
3440 call1 (Fcar (p), make_int (inserted));
|
|
|
3441 if (!NILP (insval))
|
|
|
3442 {
|
|
|
3443 CHECK_NATNUM (insval);
|
|
|
3444 inserted = XINT (insval);
|
|
|
3445 }
|
|
|
3446 QUIT;
|
|
|
3447 p = Fcdr (p);
|
|
|
3448 }
|
|
|
3449 NUNGCPRO;
|
|
|
3450 }
|
|
|
3451
|
|
|
3452 UNGCPRO;
|
|
|
3453
|
|
|
3454 if (!NILP (val))
|
|
|
3455 return (val);
|
|
|
3456 else
|
|
|
3457 return (list2 (filename, make_int (inserted)));
|
|
|
3458 }
|
|
|
3459
|
|
|
3460
|
|
|
3461 static int a_write (Lisp_Object outstream, Lisp_Object instream, int pos,
|
|
|
3462 Lisp_Object *annot);
|
|
|
3463 static Lisp_Object build_annotations (Lisp_Object start, Lisp_Object end);
|
|
|
3464
|
|
|
3465 /* If build_annotations switched buffers, switch back to BUF.
|
|
|
3466 Kill the temporary buffer that was selected in the meantime. */
|
|
|
3467
|
|
151
|
3468 static Lisp_Object
|
|
0
|
3469 build_annotations_unwind (Lisp_Object buf)
|
|
|
3470 {
|
|
|
3471 Lisp_Object tembuf;
|
|
|
3472
|
|
|
3473 if (XBUFFER (buf) == current_buffer)
|
|
|
3474 return Qnil;
|
|
|
3475 tembuf = Fcurrent_buffer ();
|
|
|
3476 Fset_buffer (buf);
|
|
|
3477 Fkill_buffer (tembuf);
|
|
|
3478 return Qnil;
|
|
|
3479 }
|
|
|
3480
|
|
70
|
3481 DEFUN ("write-region-internal", Fwrite_region_internal, 3, 7,
|
|
20
|
3482 "r\nFWrite region to file: ", /*
|
|
70
|
3483 Write current region into specified file; no coding-system frobbing.
|
|
|
3484 This function is identical to `write-region' except for the handling
|
|
|
3485 of the CODESYS argument under XEmacs/Mule. (When Mule support is not
|
|
|
3486 present, both functions are identical and ignore the CODESYS argument.)
|
|
|
3487 If support for Mule exists in this Emacs, the file is encoded according
|
|
|
3488 to the value of CODESYS. If this is nil, no code conversion occurs.
|
|
20
|
3489 */
|
|
70
|
3490 (start, end, filename, append, visit, lockname, codesys))
|
|
0
|
3491 {
|
|
116
|
3492 /* This function can call lisp */
|
|
0
|
3493 int desc;
|
|
|
3494 int failure;
|
|
|
3495 int save_errno = 0;
|
|
|
3496 struct stat st;
|
|
|
3497 Lisp_Object fn;
|
|
|
3498 int speccount = specpdl_depth ();
|
|
|
3499 int visiting_other = STRINGP (visit);
|
|
|
3500 int visiting = (EQ (visit, Qt) || visiting_other);
|
|
|
3501 int quietly = (!visiting && !NILP (visit));
|
|
|
3502 Lisp_Object visit_file = Qnil;
|
|
|
3503 Lisp_Object annotations = Qnil;
|
|
|
3504 struct buffer *given_buffer;
|
|
|
3505 Bufpos start1, end1;
|
|
|
3506
|
|
114
|
3507 /* #### dmoore - if Fexpand_file_name or handlers kill the buffer,
|
|
|
3508 we should signal an error rather than blissfully continuing
|
|
|
3509 along. ARGH, this function is going to lose lose lose. We need
|
|
|
3510 to protect the current_buffer from being destroyed, but the
|
|
|
3511 multiple return points make this a pain in the butt. */
|
|
|
3512
|
|
0
|
3513 #ifdef DOS_NT
|
|
|
3514 int buffer_file_type
|
|
|
3515 = NILP (current_buffer->buffer_file_type) ? O_TEXT : O_BINARY;
|
|
|
3516 #endif /* DOS_NT */
|
|
|
3517
|
|
70
|
3518 #ifdef MULE
|
|
|
3519 codesys = Fget_coding_system (codesys);
|
|
|
3520 #endif /* MULE */
|
|
|
3521
|
|
0
|
3522 if (current_buffer->base_buffer && ! NILP (visit))
|
|
|
3523 error ("Cannot do file visiting in an indirect buffer");
|
|
|
3524
|
|
|
3525 if (!NILP (start) && !STRINGP (start))
|
|
|
3526 get_buffer_range_char (current_buffer, start, end, &start1, &end1, 0);
|
|
|
3527
|
|
|
3528 {
|
|
|
3529 Lisp_Object handler;
|
|
|
3530 struct gcpro gcpro1, gcpro2, gcpro3, gcpro4, gcpro5;
|
|
114
|
3531
|
|
0
|
3532 GCPRO5 (start, filename, visit, visit_file, lockname);
|
|
|
3533
|
|
|
3534 if (visiting_other)
|
|
|
3535 visit_file = Fexpand_file_name (visit, Qnil);
|
|
|
3536 else
|
|
|
3537 visit_file = filename;
|
|
|
3538 filename = Fexpand_file_name (filename, Qnil);
|
|
|
3539
|
|
|
3540 UNGCPRO;
|
|
|
3541
|
|
|
3542 if (NILP (lockname))
|
|
|
3543 lockname = visit_file;
|
|
|
3544
|
|
|
3545 /* If the file name has special constructs in it,
|
|
|
3546 call the corresponding file handler. */
|
|
|
3547 handler = Ffind_file_name_handler (filename, Qwrite_region);
|
|
|
3548 /* If FILENAME has no handler, see if VISIT has one. */
|
|
|
3549 if (NILP (handler) && STRINGP (visit))
|
|
|
3550 handler = Ffind_file_name_handler (visit, Qwrite_region);
|
|
|
3551
|
|
|
3552 if (!NILP (handler))
|
|
|
3553 {
|
|
151
|
3554 Lisp_Object val = call8 (handler, Qwrite_region, start, end,
|
|
86
|
3555 filename, append, visit, lockname, codesys);
|
|
0
|
3556 if (visiting)
|
|
|
3557 {
|
|
|
3558 BUF_SAVE_MODIFF (current_buffer) = BUF_MODIFF (current_buffer);
|
|
|
3559 current_buffer->save_length =
|
|
|
3560 make_int (BUF_SIZE (current_buffer));
|
|
|
3561 current_buffer->filename = visit_file;
|
|
|
3562 MARK_MODELINE_CHANGED;
|
|
|
3563 }
|
|
|
3564 return val;
|
|
|
3565 }
|
|
|
3566 }
|
|
|
3567
|
|
|
3568 #ifdef CLASH_DETECTION
|
|
|
3569 if (!auto_saving)
|
|
|
3570 {
|
|
114
|
3571 Lisp_Object curbuf;
|
|
|
3572 struct gcpro gcpro1, gcpro2, gcpro3, gcpro4, gcpro5;
|
|
|
3573
|
|
|
3574 XSETBUFFER (curbuf, current_buffer);
|
|
|
3575 GCPRO5 (start, filename, visit_file, lockname, curbuf);
|
|
0
|
3576 lock_file (lockname);
|
|
|
3577 UNGCPRO;
|
|
|
3578 }
|
|
|
3579 #endif /* CLASH_DETECTION */
|
|
|
3580
|
|
|
3581 /* Special kludge to simplify auto-saving. */
|
|
|
3582 if (NILP (start))
|
|
|
3583 {
|
|
|
3584 start1 = BUF_BEG (current_buffer);
|
|
|
3585 end1 = BUF_Z (current_buffer);
|
|
|
3586 }
|
|
|
3587
|
|
|
3588 record_unwind_protect (build_annotations_unwind, Fcurrent_buffer ());
|
|
|
3589
|
|
|
3590 given_buffer = current_buffer;
|
|
|
3591 annotations = build_annotations (start, end);
|
|
|
3592 if (current_buffer != given_buffer)
|
|
|
3593 {
|
|
|
3594 start1 = BUF_BEGV (current_buffer);
|
|
|
3595 end1 = BUF_ZV (current_buffer);
|
|
|
3596 }
|
|
|
3597
|
|
|
3598 fn = filename;
|
|
|
3599 desc = -1;
|
|
|
3600 if (!NILP (append))
|
|
|
3601 #ifdef DOS_NT
|
|
16
|
3602 desc = open ((char *) XSTRING_DATA (fn),
|
|
211
|
3603 (O_WRONLY | buffer_file_type), 0);
|
|
0
|
3604 #else /* not DOS_NT */
|
|
16
|
3605 desc = open ((char *) XSTRING_DATA (fn), O_WRONLY, 0);
|
|
0
|
3606 #endif /* not DOS_NT */
|
|
|
3607
|
|
|
3608 if (desc < 0)
|
|
|
3609 {
|
|
|
3610 #ifdef DOS_NT
|
|
151
|
3611 desc = open ((char *) XSTRING_DATA (fn),
|
|
211
|
3612 (O_WRONLY | O_TRUNC | O_CREAT | buffer_file_type),
|
|
0
|
3613 (S_IREAD | S_IWRITE));
|
|
|
3614 #else /* not DOS_NT */
|
|
16
|
3615 desc = creat ((char *) XSTRING_DATA (fn),
|
|
0
|
3616 ((auto_saving) ? auto_save_mode_bits : 0666));
|
|
|
3617 #endif /* DOS_NT */
|
|
|
3618 }
|
|
|
3619
|
|
|
3620 if (desc < 0)
|
|
|
3621 {
|
|
|
3622 #ifdef CLASH_DETECTION
|
|
|
3623 save_errno = errno;
|
|
|
3624 if (!auto_saving) unlock_file (lockname);
|
|
|
3625 errno = save_errno;
|
|
|
3626 #endif /* CLASH_DETECTION */
|
|
|
3627 report_file_error ("Opening output file",
|
|
|
3628 Fcons (filename, Qnil));
|
|
|
3629 }
|
|
|
3630
|
|
|
3631 {
|
|
|
3632 Lisp_Object desc_locative = Fcons (make_int (desc), Qnil);
|
|
|
3633 Lisp_Object instream = Qnil, outstream = Qnil;
|
|
|
3634 struct gcpro gcpro1, gcpro2;
|
|
|
3635 /* need to gcpro; QUIT could happen out of call to write() */
|
|
|
3636 GCPRO2 (instream, outstream);
|
|
|
3637
|
|
|
3638 record_unwind_protect (close_file_unwind, desc_locative);
|
|
|
3639
|
|
|
3640 if (!NILP (append))
|
|
|
3641 {
|
|
|
3642 if (lseek (desc, 0, 2) < 0)
|
|
|
3643 {
|
|
|
3644 #ifdef CLASH_DETECTION
|
|
|
3645 if (!auto_saving) unlock_file (lockname);
|
|
|
3646 #endif /* CLASH_DETECTION */
|
|
|
3647 report_file_error ("Lseek error",
|
|
|
3648 list1 (filename));
|
|
|
3649 }
|
|
|
3650 }
|
|
|
3651
|
|
|
3652 failure = 0;
|
|
|
3653
|
|
|
3654 /* Note: I tried increasing the buffering size, along with
|
|
|
3655 various other tricks, but nothing seemed to make much of
|
|
|
3656 a difference in the time it took to save a large file.
|
|
|
3657 (Actually that's not true. With a local disk, changing
|
|
|
3658 the buffer size doesn't seem to make much difference.
|
|
|
3659 With an NFS-mounted disk, it could make a lot of difference
|
|
|
3660 because you're affecting the number of network requests
|
|
|
3661 that need to be made, and there could be a large latency
|
|
|
3662 for each request. So I've increased the buffer size
|
|
|
3663 to 64K.) */
|
|
|
3664 outstream = make_filedesc_output_stream (desc, 0, -1, 0);
|
|
|
3665 Lstream_set_buffering (XLSTREAM (outstream),
|
|
|
3666 LSTREAM_BLOCKN_BUFFERED, 65536);
|
|
70
|
3667 #ifdef MULE
|
|
|
3668 outstream =
|
|
185
|
3669 make_encoding_output_stream (XLSTREAM (outstream), codesys);
|
|
70
|
3670 Lstream_set_buffering (XLSTREAM (outstream),
|
|
|
3671 LSTREAM_BLOCKN_BUFFERED, 65536);
|
|
183
|
3672 #endif /* MULE */
|
|
0
|
3673 if (STRINGP (start))
|
|
|
3674 {
|
|
|
3675 instream = make_lisp_string_input_stream (start, 0, -1);
|
|
|
3676 start1 = 0;
|
|
|
3677 }
|
|
|
3678 else
|
|
|
3679 instream = make_lisp_buffer_input_stream (current_buffer, start1, end1,
|
|
|
3680 LSTR_SELECTIVE |
|
|
|
3681 LSTR_IGNORE_ACCESSIBLE);
|
|
|
3682 failure = (0 > (a_write (outstream, instream, start1,
|
|
|
3683 &annotations)));
|
|
|
3684 save_errno = errno;
|
|
|
3685 /* Note that this doesn't close the desc since we created the
|
|
|
3686 stream without the LSTR_CLOSING flag, but it does
|
|
|
3687 flush out any buffered data. */
|
|
|
3688 if (Lstream_close (XLSTREAM (outstream)) < 0)
|
|
|
3689 {
|
|
|
3690 failure = 1;
|
|
|
3691 save_errno = errno;
|
|
|
3692 }
|
|
|
3693 Lstream_close (XLSTREAM (instream));
|
|
|
3694 UNGCPRO;
|
|
|
3695
|
|
|
3696 #ifdef HAVE_FSYNC
|
|
|
3697 /* Note fsync appears to change the modtime on BSD4.2 (both vax and sun).
|
|
|
3698 Disk full in NFS may be reported here. */
|
|
|
3699 /* mib says that closing the file will try to write as fast as NFS can do
|
|
|
3700 it, and that means the fsync here is not crucial for autosave files. */
|
|
|
3701 if (!auto_saving && fsync (desc) < 0
|
|
|
3702 /* If fsync fails with EINTR, don't treat that as serious. */
|
|
|
3703 && errno != EINTR)
|
|
|
3704 {
|
|
|
3705 failure = 1;
|
|
|
3706 save_errno = errno;
|
|
|
3707 }
|
|
183
|
3708 #endif /* HAVE_FSYNC */
|
|
0
|
3709
|
|
151
|
3710 /* Spurious "file has changed on disk" warnings have been
|
|
0
|
3711 observed on Suns as well.
|
|
|
3712 It seems that `close' can change the modtime, under nfs.
|
|
|
3713
|
|
|
3714 (This has supposedly been fixed in Sunos 4,
|
|
|
3715 but who knows about all the other machines with NFS?) */
|
|
|
3716 /* On VMS and APOLLO, must do the stat after the close
|
|
|
3717 since closing changes the modtime. */
|
|
|
3718 #if 0 /* !defined (VMS) && !defined (APOLLO) */
|
|
|
3719 fstat (desc, &st);
|
|
|
3720 #endif
|
|
|
3721
|
|
|
3722 /* NFS can report a write failure now. */
|
|
|
3723 if (close (desc) < 0)
|
|
|
3724 {
|
|
|
3725 failure = 1;
|
|
|
3726 save_errno = errno;
|
|
|
3727 }
|
|
|
3728
|
|
|
3729 /* Discard the close unwind-protect. Execute the one for
|
|
|
3730 build_annotations (switches back to the original current buffer
|
|
|
3731 as necessary). */
|
|
|
3732 XCAR (desc_locative) = Qnil;
|
|
|
3733 unbind_to (speccount, Qnil);
|
|
|
3734 }
|
|
151
|
3735
|
|
0
|
3736
|
|
|
3737 #if 1 /* defined (VMS) || defined (APOLLO) */
|
|
16
|
3738 stat ((char *) XSTRING_DATA (fn), &st);
|
|
0
|
3739 #endif
|
|
|
3740
|
|
|
3741 #ifdef CLASH_DETECTION
|
|
|
3742 if (!auto_saving)
|
|
|
3743 unlock_file (lockname);
|
|
|
3744 #endif /* CLASH_DETECTION */
|
|
|
3745
|
|
|
3746 /* Do this before reporting IO error
|
|
|
3747 to avoid a "file has changed on disk" warning on
|
|
|
3748 next attempt to save. */
|
|
|
3749 if (visiting)
|
|
|
3750 current_buffer->modtime = st.st_mtime;
|
|
|
3751
|
|
|
3752 if (failure)
|
|
151
|
3753 error ("IO error writing %s: %s",
|
|
|
3754 XSTRING_DATA (fn),
|
|
0
|
3755 strerror (save_errno));
|
|
|
3756
|
|
|
3757 if (visiting)
|
|
|
3758 {
|
|
|
3759 BUF_SAVE_MODIFF (current_buffer) = BUF_MODIFF (current_buffer);
|
|
|
3760 current_buffer->save_length = make_int (BUF_SIZE (current_buffer));
|
|
|
3761 current_buffer->filename = visit_file;
|
|
|
3762 MARK_MODELINE_CHANGED;
|
|
|
3763 }
|
|
|
3764 else if (quietly)
|
|
|
3765 {
|
|
|
3766 return Qnil;
|
|
|
3767 }
|
|
|
3768
|
|
|
3769 if (!auto_saving)
|
|
|
3770 {
|
|
|
3771 if (visiting_other)
|
|
16
|
3772 message ("Wrote %s", XSTRING_DATA (visit_file));
|
|
0
|
3773 else
|
|
|
3774 {
|
|
|
3775 struct gcpro gcpro1;
|
|
|
3776 Lisp_Object fsp;
|
|
|
3777 GCPRO1 (fn);
|
|
|
3778
|
|
|
3779 fsp = Ffile_symlink_p (fn);
|
|
|
3780 if (NILP (fsp))
|
|
16
|
3781 message ("Wrote %s", XSTRING_DATA (fn));
|
|
0
|
3782 else
|
|
151
|
3783 message ("Wrote %s (symlink to %s)",
|
|
16
|
3784 XSTRING_DATA (fn), XSTRING_DATA (fsp));
|
|
0
|
3785 UNGCPRO;
|
|
|
3786 }
|
|
|
3787 }
|
|
|
3788 return Qnil;
|
|
|
3789 }
|
|
|
3790
|
|
|
3791 /* #### This is such a load of shit!!!! There is no way we should define
|
|
|
3792 something so stupid as a subr, just sort the fucking list more
|
|
|
3793 intelligently. */
|
|
20
|
3794 DEFUN ("car-less-than-car", Fcar_less_than_car, 2, 2, 0, /*
|
|
0
|
3795 Return t if (car A) is numerically less than (car B).
|
|
20
|
3796 */
|
|
|
3797 (a, b))
|
|
0
|
3798 {
|
|
|
3799 return Flss (Fcar (a), Fcar (b));
|
|
|
3800 }
|
|
|
3801
|
|
|
3802 /* Heh heh heh, let's define this too, just to aggravate the person who
|
|
|
3803 wrote the above comment. */
|
|
20
|
3804 DEFUN ("cdr-less-than-cdr", Fcdr_less_than_cdr, 2, 2, 0, /*
|
|
0
|
3805 Return t if (cdr A) is numerically less than (cdr B).
|
|
20
|
3806 */
|
|
|
3807 (a, b))
|
|
0
|
3808 {
|
|
|
3809 return Flss (Fcdr (a), Fcdr (b));
|
|
|
3810 }
|
|
|
3811
|
|
|
3812 /* Build the complete list of annotations appropriate for writing out
|
|
|
3813 the text between START and END, by calling all the functions in
|
|
|
3814 write-region-annotate-functions and merging the lists they return.
|
|
|
3815 If one of these functions switches to a different buffer, we assume
|
|
|
3816 that buffer contains altered text. Therefore, the caller must
|
|
|
3817 make sure to restore the current buffer in all cases,
|
|
|
3818 as save-excursion would do. */
|
|
|
3819
|
|
|
3820 static Lisp_Object
|
|
|
3821 build_annotations (Lisp_Object start, Lisp_Object end)
|
|
|
3822 {
|
|
|
3823 /* This function can GC */
|
|
|
3824 Lisp_Object annotations;
|
|
|
3825 Lisp_Object p, res;
|
|
|
3826 struct gcpro gcpro1, gcpro2;
|
|
|
3827
|
|
|
3828 annotations = Qnil;
|
|
|
3829 p = Vwrite_region_annotate_functions;
|
|
|
3830 GCPRO2 (annotations, p);
|
|
|
3831 while (!NILP (p))
|
|
|
3832 {
|
|
|
3833 struct buffer *given_buffer = current_buffer;
|
|
|
3834 Vwrite_region_annotations_so_far = annotations;
|
|
|
3835 res = call2 (Fcar (p), start, end);
|
|
|
3836 /* If the function makes a different buffer current,
|
|
|
3837 assume that means this buffer contains altered text to be output.
|
|
|
3838 Reset START and END from the buffer bounds
|
|
|
3839 and discard all previous annotations because they should have
|
|
|
3840 been dealt with by this function. */
|
|
|
3841 if (current_buffer != given_buffer)
|
|
|
3842 {
|
|
|
3843 start = make_int (BUF_BEGV (current_buffer));
|
|
|
3844 end = make_int (BUF_ZV (current_buffer));
|
|
|
3845 annotations = Qnil;
|
|
|
3846 }
|
|
183
|
3847 Flength (res); /* Check basic validity of return value */
|
|
0
|
3848 annotations = merge (annotations, res, Qcar_less_than_car);
|
|
|
3849 p = Fcdr (p);
|
|
|
3850 }
|
|
|
3851
|
|
|
3852 /* Now do the same for annotation functions implied by the file-format */
|
|
|
3853 if (auto_saving && (!EQ (Vauto_save_file_format, Qt)))
|
|
|
3854 p = Vauto_save_file_format;
|
|
|
3855 else
|
|
|
3856 p = current_buffer->file_format;
|
|
|
3857 while (!NILP (p))
|
|
|
3858 {
|
|
|
3859 struct buffer *given_buffer = current_buffer;
|
|
|
3860 Vwrite_region_annotations_so_far = annotations;
|
|
|
3861 res = call3 (Qformat_annotate_function, Fcar (p), start, end);
|
|
|
3862 if (current_buffer != given_buffer)
|
|
|
3863 {
|
|
|
3864 start = make_int (BUF_BEGV (current_buffer));
|
|
|
3865 end = make_int (BUF_ZV (current_buffer));
|
|
|
3866 annotations = Qnil;
|
|
|
3867 }
|
|
183
|
3868 Flength (res);
|
|
0
|
3869 annotations = merge (annotations, res, Qcar_less_than_car);
|
|
|
3870 p = Fcdr (p);
|
|
|
3871 }
|
|
|
3872 UNGCPRO;
|
|
|
3873 return annotations;
|
|
|
3874 }
|
|
|
3875
|
|
|
3876 /* Write to stream OUTSTREAM the characters from INSTREAM (it is read until
|
|
|
3877 EOF is encountered), assuming they start at position POS in the buffer
|
|
|
3878 of string that STREAM refers to. Intersperse with them the annotations
|
|
|
3879 from *ANNOT that fall into the range of positions we are reading from,
|
|
|
3880 each at its appropriate position.
|
|
|
3881
|
|
|
3882 Modify *ANNOT by discarding elements as we output them.
|
|
|
3883 The return value is negative in case of system call failure. */
|
|
|
3884
|
|
|
3885 /* 4K should probably be fine. We just need to reduce the number of
|
|
|
3886 function calls to reasonable level. The Lstream stuff itself will
|
|
|
3887 batch to 64K to reduce the number of system calls. */
|
|
|
3888
|
|
|
3889 #define A_WRITE_BATCH_SIZE 4096
|
|
|
3890
|
|
|
3891 static int
|
|
|
3892 a_write (Lisp_Object outstream, Lisp_Object instream, int pos,
|
|
|
3893 Lisp_Object *annot)
|
|
|
3894 {
|
|
|
3895 Lisp_Object tem;
|
|
|
3896 int nextpos;
|
|
|
3897 unsigned char largebuf[A_WRITE_BATCH_SIZE];
|
|
|
3898 Lstream *instr = XLSTREAM (instream);
|
|
|
3899 Lstream *outstr = XLSTREAM (outstream);
|
|
|
3900
|
|
|
3901 while (NILP (*annot) || CONSP (*annot))
|
|
|
3902 {
|
|
|
3903 tem = Fcar_safe (Fcar (*annot));
|
|
|
3904 if (INTP (tem))
|
|
|
3905 nextpos = XINT (tem);
|
|
|
3906 else
|
|
|
3907 nextpos = INT_MAX;
|
|
70
|
3908 #ifdef MULE
|
|
|
3909 /* If there are annotations left and we have Mule, then we
|
|
|
3910 have to do the I/O one emchar at a time so we can
|
|
|
3911 determine when to insert the annotation. */
|
|
|
3912 if (!NILP (*annot))
|
|
|
3913 {
|
|
|
3914 Emchar ch;
|
|
|
3915 while (pos != nextpos && (ch = Lstream_get_emchar (instr)) != EOF)
|
|
|
3916 {
|
|
|
3917 if (Lstream_put_emchar (outstr, ch) < 0)
|
|
|
3918 return -1;
|
|
|
3919 pos++;
|
|
|
3920 }
|
|
|
3921 }
|
|
|
3922 else
|
|
183
|
3923 #endif /* MULE */
|
|
0
|
3924 {
|
|
|
3925 while (pos != nextpos)
|
|
|
3926 {
|
|
|
3927 /* Otherwise there is no point to that. Just go in batches. */
|
|
|
3928 int chunk = min (nextpos - pos, A_WRITE_BATCH_SIZE);
|
|
151
|
3929
|
|
0
|
3930 chunk = Lstream_read (instr, largebuf, chunk);
|
|
|
3931 if (chunk < 0)
|
|
|
3932 return -1;
|
|
|
3933 if (chunk == 0) /* EOF */
|
|
|
3934 break;
|
|
|
3935 if (Lstream_write (outstr, largebuf, chunk) < chunk)
|
|
|
3936 return -1;
|
|
|
3937 pos += chunk;
|
|
|
3938 }
|
|
|
3939 }
|
|
|
3940 if (pos == nextpos)
|
|
|
3941 {
|
|
|
3942 tem = Fcdr (Fcar (*annot));
|
|
|
3943 if (STRINGP (tem))
|
|
|
3944 {
|
|
16
|
3945 if (Lstream_write (outstr, XSTRING_DATA (tem),
|
|
|
3946 XSTRING_LENGTH (tem)) < 0)
|
|
0
|
3947 return -1;
|
|
|
3948 }
|
|
|
3949 *annot = Fcdr (*annot);
|
|
|
3950 }
|
|
|
3951 else
|
|
|
3952 return 0;
|
|
|
3953 }
|
|
|
3954 return -1;
|
|
|
3955 }
|
|
|
3956
|
|
|
3957
|
|
|
3958
|
|
|
3959 #if 0
|
|
|
3960 #include <des_crypt.h>
|
|
|
3961
|
|
|
3962 #define CRYPT_BLOCK_SIZE 8 /* bytes */
|
|
|
3963 #define CRYPT_KEY_SIZE 8 /* bytes */
|
|
|
3964
|
|
20
|
3965 DEFUN ("encrypt-string", Fencrypt_string, 2, 2, 0, /*
|
|
0
|
3966 Encrypt STRING using KEY.
|
|
20
|
3967 */
|
|
|
3968 (string, key))
|
|
0
|
3969 {
|
|
|
3970 char *encrypted_string, *raw_key;
|
|
|
3971 int rounded_size, extra, key_size;
|
|
|
3972
|
|
|
3973 /* !!#### May produce bogus data under Mule. */
|
|
|
3974 CHECK_STRING (string);
|
|
|
3975 CHECK_STRING (key);
|
|
|
3976
|
|
16
|
3977 extra = XSTRING_LENGTH (string) % CRYPT_BLOCK_SIZE;
|
|
|
3978 rounded_size = XSTRING_LENGTH (string) + extra;
|
|
0
|
3979 encrypted_string = alloca (rounded_size + 1);
|
|
16
|
3980 memcpy (encrypted_string, XSTRING_DATA (string), XSTRING_LENGTH (string));
|
|
0
|
3981 memset (encrypted_string + rounded_size - extra, 0, extra + 1);
|
|
|
3982
|
|
183
|
3983 key_size = min (CRYPT_KEY_SIZE, XSTRING_LENGTH (key))
|
|
0
|
3984
|
|
|
3985 raw_key = alloca (CRYPT_KEY_SIZE + 1);
|
|
16
|
3986 memcpy (raw_key, XSTRING_DATA (key), key_size);
|
|
0
|
3987 memset (raw_key + key_size, 0, (CRYPT_KEY_SIZE + 1) - key_size);
|
|
|
3988
|
|
183
|
3989 ecb_crypt (raw_key, encrypted_string, rounded_size,
|
|
|
3990 DES_ENCRYPT | DES_SW);
|
|
0
|
3991 return make_string (encrypted_string, rounded_size);
|
|
|
3992 }
|
|
|
3993
|
|
20
|
3994 DEFUN ("decrypt-string", Fdecrypt_string, 2, 2, 0, /*
|
|
0
|
3995 Decrypt STRING using KEY.
|
|
20
|
3996 */
|
|
|
3997 (string, key))
|
|
0
|
3998 {
|
|
|
3999 char *decrypted_string, *raw_key;
|
|
|
4000 int string_size, key_size;
|
|
|
4001
|
|
|
4002 CHECK_STRING (string);
|
|
|
4003 CHECK_STRING (key);
|
|
|
4004
|
|
16
|
4005 string_size = XSTRING_LENGTH (string) + 1;
|
|
0
|
4006 decrypted_string = alloca (string_size);
|
|
16
|
4007 memcpy (decrypted_string, XSTRING_DATA (string), string_size);
|
|
0
|
4008 decrypted_string[string_size - 1] = '\0';
|
|
|
4009
|
|
183
|
4010 key_size = min (CRYPT_KEY_SIZE, XSTRING_LENGTH (key))
|
|
0
|
4011
|
|
|
4012 raw_key = alloca (CRYPT_KEY_SIZE + 1);
|
|
16
|
4013 memcpy (raw_key, XSTRING_DATA (key), key_size);
|
|
0
|
4014 memset (raw_key + key_size, 0, (CRYPT_KEY_SIZE + 1) - key_size);
|
|
|
4015
|
|
|
4016
|
|
183
|
4017 ecb_crypt (raw_key, decrypted_string, string_size, D | DES_SW);
|
|
0
|
4018 return make_string (decrypted_string, string_size - 1);
|
|
|
4019 }
|
|
183
|
4020 #endif /* 0 */
|
|
0
|
4021
|
|
|
4022
|
|
20
|
4023 DEFUN ("verify-visited-file-modtime", Fverify_visited_file_modtime, 1, 1, 0, /*
|
|
0
|
4024 Return t if last mod time of BUF's visited file matches what BUF records.
|
|
|
4025 This means that the file has not been changed since it was visited or saved.
|
|
20
|
4026 */
|
|
|
4027 (buf))
|
|
0
|
4028 {
|
|
116
|
4029 /* This function can call lisp */
|
|
0
|
4030 struct buffer *b;
|
|
|
4031 struct stat st;
|
|
|
4032 Lisp_Object handler;
|
|
|
4033
|
|
|
4034 CHECK_BUFFER (buf);
|
|
|
4035 b = XBUFFER (buf);
|
|
|
4036
|
|
|
4037 if (!STRINGP (b->filename)) return Qt;
|
|
|
4038 if (b->modtime == 0) return Qt;
|
|
|
4039
|
|
|
4040 /* If the file name has special constructs in it,
|
|
|
4041 call the corresponding file handler. */
|
|
|
4042 handler = Ffind_file_name_handler (b->filename,
|
|
|
4043 Qverify_visited_file_modtime);
|
|
|
4044 if (!NILP (handler))
|
|
|
4045 return call2 (handler, Qverify_visited_file_modtime, buf);
|
|
|
4046
|
|
16
|
4047 if (stat ((char *) XSTRING_DATA (b->filename), &st) < 0)
|
|
0
|
4048 {
|
|
|
4049 /* If the file doesn't exist now and didn't exist before,
|
|
|
4050 we say that it isn't modified, provided the error is a tame one. */
|
|
|
4051 if (errno == ENOENT || errno == EACCES || errno == ENOTDIR)
|
|
|
4052 st.st_mtime = -1;
|
|
|
4053 else
|
|
|
4054 st.st_mtime = 0;
|
|
|
4055 }
|
|
|
4056 if (st.st_mtime == b->modtime
|
|
|
4057 /* If both are positive, accept them if they are off by one second. */
|
|
|
4058 || (st.st_mtime > 0 && b->modtime > 0
|
|
|
4059 && (st.st_mtime == b->modtime + 1
|
|
|
4060 || st.st_mtime == b->modtime - 1)))
|
|
|
4061 return Qt;
|
|
|
4062 return Qnil;
|
|
|
4063 }
|
|
|
4064
|
|
20
|
4065 DEFUN ("clear-visited-file-modtime", Fclear_visited_file_modtime, 0, 0, 0, /*
|
|
0
|
4066 Clear out records of last mod time of visited file.
|
|
|
4067 Next attempt to save will certainly not complain of a discrepancy.
|
|
20
|
4068 */
|
|
|
4069 ())
|
|
0
|
4070 {
|
|
|
4071 current_buffer->modtime = 0;
|
|
|
4072 return Qnil;
|
|
|
4073 }
|
|
|
4074
|
|
20
|
4075 DEFUN ("visited-file-modtime", Fvisited_file_modtime, 0, 0, 0, /*
|
|
0
|
4076 Return the current buffer's recorded visited file modification time.
|
|
|
4077 The value is a list of the form (HIGH . LOW), like the time values
|
|
|
4078 that `file-attributes' returns.
|
|
20
|
4079 */
|
|
|
4080 ())
|
|
0
|
4081 {
|
|
|
4082 return time_to_lisp ((time_t) current_buffer->modtime);
|
|
|
4083 }
|
|
|
4084
|
|
20
|
4085 DEFUN ("set-visited-file-modtime", Fset_visited_file_modtime, 0, 1, 0, /*
|
|
0
|
4086 Update buffer's recorded modification time from the visited file's time.
|
|
|
4087 Useful if the buffer was not read from the file normally
|
|
|
4088 or if the file itself has been changed for some known benign reason.
|
|
|
4089 An argument specifies the modification time value to use
|
|
|
4090 (instead of that of the visited file), in the form of a list
|
|
|
4091 (HIGH . LOW) or (HIGH LOW).
|
|
20
|
4092 */
|
|
|
4093 (time_list))
|
|
0
|
4094 {
|
|
116
|
4095 /* This function can call lisp */
|
|
0
|
4096 if (!NILP (time_list))
|
|
|
4097 {
|
|
|
4098 time_t the_time;
|
|
|
4099 lisp_to_time (time_list, &the_time);
|
|
|
4100 current_buffer->modtime = (int) the_time;
|
|
|
4101 }
|
|
|
4102 else
|
|
|
4103 {
|
|
|
4104 Lisp_Object filename;
|
|
|
4105 struct stat st;
|
|
|
4106 Lisp_Object handler;
|
|
114
|
4107 struct gcpro gcpro1, gcpro2, gcpro3;
|
|
151
|
4108
|
|
114
|
4109 GCPRO3 (filename, time_list, current_buffer->filename);
|
|
|
4110 filename = Fexpand_file_name (current_buffer->filename, Qnil);
|
|
0
|
4111
|
|
|
4112 /* If the file name has special constructs in it,
|
|
|
4113 call the corresponding file handler. */
|
|
|
4114 handler = Ffind_file_name_handler (filename, Qset_visited_file_modtime);
|
|
|
4115 UNGCPRO;
|
|
|
4116 if (!NILP (handler))
|
|
|
4117 /* The handler can find the file name the same way we did. */
|
|
|
4118 return call2 (handler, Qset_visited_file_modtime, Qnil);
|
|
16
|
4119 else if (stat ((char *) XSTRING_DATA (filename), &st) >= 0)
|
|
0
|
4120 current_buffer->modtime = st.st_mtime;
|
|
|
4121 }
|
|
|
4122
|
|
|
4123 return Qnil;
|
|
|
4124 }
|
|
|
4125
|
|
20
|
4126 DEFUN ("set-buffer-modtime", Fset_buffer_modtime, 1, 2, 0, /*
|
|
151
|
4127 Update BUFFER's recorded modification time from the associated
|
|
|
4128 file's modtime, if there is an associated file. If not, use the
|
|
0
|
4129 current time. In either case, if the optional arg TIME is supplied,
|
|
|
4130 it will be used if it is either an integer or a cons of two integers.
|
|
20
|
4131 */
|
|
|
4132 (buf, in_time))
|
|
0
|
4133 {
|
|
116
|
4134 /* This function can call lisp */
|
|
0
|
4135 unsigned long time_to_use = 0;
|
|
|
4136 int set_time_to_use = 0;
|
|
|
4137 struct stat st;
|
|
|
4138
|
|
|
4139 CHECK_BUFFER (buf);
|
|
|
4140
|
|
|
4141 if (!NILP (in_time))
|
|
|
4142 {
|
|
|
4143 if (INTP (in_time))
|
|
|
4144 {
|
|
|
4145 time_to_use = XINT (in_time);
|
|
|
4146 set_time_to_use = 1;
|
|
|
4147 }
|
|
|
4148 else if ((CONSP (in_time)) &&
|
|
151
|
4149 (INTP (Fcar (in_time))) &&
|
|
0
|
4150 (INTP (Fcdr (in_time))))
|
|
|
4151 {
|
|
|
4152 time_t the_time;
|
|
|
4153 lisp_to_time (in_time, &the_time);
|
|
|
4154 time_to_use = (unsigned long) the_time;
|
|
|
4155 set_time_to_use = 1;
|
|
|
4156 }
|
|
|
4157 }
|
|
|
4158
|
|
|
4159 if (!set_time_to_use)
|
|
|
4160 {
|
|
|
4161 Lisp_Object filename = Qnil;
|
|
114
|
4162 struct gcpro gcpro1;
|
|
|
4163 GCPRO1 (filename);
|
|
|
4164 /* #### dmoore - do we need to protect XBUFFER (buf)->filename?
|
|
|
4165 What if a ^(*&^&*^*& handler renames a buffer? I think I'm
|
|
|
4166 getting a headache now. */
|
|
0
|
4167
|
|
|
4168 if (STRINGP (XBUFFER (buf)->filename))
|
|
114
|
4169 filename = Fexpand_file_name (XBUFFER (buf)->filename, Qnil);
|
|
0
|
4170 else
|
|
|
4171 filename = Qnil;
|
|
|
4172
|
|
|
4173 if (!NILP (filename) && !NILP (Ffile_exists_p (filename)))
|
|
|
4174 {
|
|
|
4175 Lisp_Object handler;
|
|
|
4176
|
|
|
4177 /* If the file name has special constructs in it,
|
|
|
4178 call the corresponding file handler. */
|
|
|
4179 handler = Ffind_file_name_handler (filename, Qset_buffer_modtime);
|
|
|
4180 UNGCPRO;
|
|
|
4181 if (!NILP (handler))
|
|
|
4182 /* The handler can find the file name the same way we did. */
|
|
|
4183 return (call2 (handler, Qset_buffer_modtime, Qnil));
|
|
|
4184 else
|
|
|
4185 {
|
|
16
|
4186 if (stat ((char *) XSTRING_DATA (filename), &st) >= 0)
|
|
0
|
4187 time_to_use = st.st_mtime;
|
|
|
4188 else
|
|
|
4189 time_to_use = time ((time_t *) 0);
|
|
|
4190 }
|
|
|
4191 }
|
|
|
4192 else
|
|
114
|
4193 {
|
|
|
4194 UNGCPRO;
|
|
|
4195 time_to_use = time ((time_t *) 0);
|
|
|
4196 }
|
|
0
|
4197 }
|
|
|
4198
|
|
|
4199 XBUFFER (buf)->modtime = time_to_use;
|
|
151
|
4200
|
|
0
|
4201 return Qnil;
|
|
|
4202 }
|
|
|
4203
|
|
|
4204
|
|
|
4205 static Lisp_Object
|
|
|
4206 auto_save_error (Lisp_Object condition_object, Lisp_Object ignored)
|
|
|
4207 {
|
|
116
|
4208 /* This function can call lisp */
|
|
0
|
4209 if (gc_in_progress)
|
|
|
4210 return Qnil;
|
|
110
|
4211 /* Don't try printing an error message after everything is gone! */
|
|
|
4212 if (preparing_for_armageddon)
|
|
|
4213 return Qnil;
|
|
0
|
4214 clear_echo_area (selected_frame (), Qauto_saving, 1);
|
|
|
4215 Fding (Qt, Qauto_save_error, Qnil);
|
|
82
|
4216 message ("Auto-saving...error for %s", XSTRING_DATA (current_buffer->name));
|
|
0
|
4217 Fsleep_for (make_int (1));
|
|
82
|
4218 message ("Auto-saving...error!for %s", XSTRING_DATA (current_buffer->name));
|
|
0
|
4219 Fsleep_for (make_int (1));
|
|
82
|
4220 message ("Auto-saving...error for %s", XSTRING_DATA (current_buffer->name));
|
|
0
|
4221 Fsleep_for (make_int (1));
|
|
|
4222 return Qnil;
|
|
|
4223 }
|
|
|
4224
|
|
|
4225 static Lisp_Object
|
|
|
4226 auto_save_1 (Lisp_Object ignored)
|
|
|
4227 {
|
|
116
|
4228 /* This function can call lisp */
|
|
|
4229 /* #### I think caller is protecting current_buffer? */
|
|
0
|
4230 struct stat st;
|
|
|
4231 Lisp_Object fn = current_buffer->filename;
|
|
|
4232 Lisp_Object a = current_buffer->auto_save_file_name;
|
|
|
4233
|
|
|
4234 if (!STRINGP (a))
|
|
|
4235 return (Qnil);
|
|
|
4236
|
|
|
4237 /* Get visited file's mode to become the auto save file's mode. */
|
|
|
4238 if (STRINGP (fn) &&
|
|
16
|
4239 stat ((char *) XSTRING_DATA (fn), &st) >= 0)
|
|
0
|
4240 /* But make sure we can overwrite it later! */
|
|
|
4241 auto_save_mode_bits = st.st_mode | 0600;
|
|
|
4242 else
|
|
|
4243 /* default mode for auto-save files of buffers with no file is
|
|
|
4244 readable by owner only. This may annoy some small number of
|
|
|
4245 people, but the alternative removes all privacy from email. */
|
|
|
4246 auto_save_mode_bits = 0600;
|
|
|
4247
|
|
|
4248 return
|
|
70
|
4249 /* !!#### need to deal with this 'escape-quoted everywhere */
|
|
|
4250 Fwrite_region_internal (Qnil, Qnil, a, Qnil, Qlambda, Qnil,
|
|
|
4251 #ifdef MULE
|
|
|
4252 Qescape_quoted
|
|
|
4253 #else
|
|
|
4254 Qnil
|
|
|
4255 #endif
|
|
|
4256 );
|
|
44
|
4257 }
|
|
|
4258
|
|
116
|
4259 static Lisp_Object
|
|
|
4260 auto_save_expand_name_error (Lisp_Object condition_object, Lisp_Object ignored)
|
|
|
4261 {
|
|
|
4262 /* #### this function should spew an error message about not being
|
|
|
4263 able to open the .saves file. */
|
|
|
4264 return Qnil;
|
|
|
4265 }
|
|
|
4266
|
|
|
4267 static Lisp_Object
|
|
|
4268 auto_save_expand_name (Lisp_Object name)
|
|
|
4269 {
|
|
|
4270 struct gcpro gcpro1;
|
|
|
4271
|
|
|
4272 /* note that caller did NOT gc protect name, so we do it. */
|
|
|
4273 /* #### dmoore - this might not be neccessary, if condition_case_1
|
|
|
4274 protects it. but I don't think it does. */
|
|
|
4275 GCPRO1 (name);
|
|
|
4276 RETURN_UNGCPRO (Fexpand_file_name (name, Qnil));
|
|
|
4277 }
|
|
|
4278
|
|
0
|
4279
|
|
|
4280 static Lisp_Object
|
|
|
4281 do_auto_save_unwind (Lisp_Object fd)
|
|
|
4282 {
|
|
|
4283 close (XINT (fd));
|
|
|
4284 return (fd);
|
|
|
4285 }
|
|
|
4286
|
|
|
4287 static Lisp_Object
|
|
|
4288 do_auto_save_unwind_2 (Lisp_Object old_auto_saving)
|
|
|
4289 {
|
|
|
4290 auto_saving = XINT (old_auto_saving);
|
|
|
4291 return Qnil;
|
|
|
4292 }
|
|
|
4293
|
|
|
4294 /* Fdo_auto_save() checks whether a GC is in progress when it is called,
|
|
|
4295 and if so, tries to avoid touching lisp objects.
|
|
|
4296
|
|
|
4297 The only time that Fdo_auto_save() is called while GC is in progress
|
|
|
4298 is if we're going down, as a result of an abort() or a kill signal.
|
|
|
4299 It's fairly important that we generate autosave files in that case!
|
|
|
4300 */
|
|
|
4301
|
|
20
|
4302 DEFUN ("do-auto-save", Fdo_auto_save, 0, 2, "", /*
|
|
0
|
4303 Auto-save all buffers that need it.
|
|
|
4304 This is all buffers that have auto-saving enabled
|
|
|
4305 and are changed since last auto-saved.
|
|
|
4306 Auto-saving writes the buffer into a file
|
|
|
4307 so that your editing is not lost if the system crashes.
|
|
|
4308 This file is not the file you visited; that changes only when you save.
|
|
|
4309 Normally we run the normal hook `auto-save-hook' before saving.
|
|
|
4310
|
|
|
4311 Non-nil first argument means do not print any message if successful.
|
|
|
4312 Non-nil second argument means save only current buffer.
|
|
20
|
4313 */
|
|
|
4314 (no_message, current_only))
|
|
0
|
4315 {
|
|
116
|
4316 /* This function can call lisp */
|
|
110
|
4317 struct buffer *b;
|
|
0
|
4318 Lisp_Object tail, buf;
|
|
|
4319 int auto_saved = 0;
|
|
|
4320 int do_handled_files;
|
|
|
4321 Lisp_Object oquit = Qnil;
|
|
|
4322 Lisp_Object listfile = Qnil;
|
|
110
|
4323 Lisp_Object old;
|
|
0
|
4324 int listdesc = -1;
|
|
|
4325 int speccount = specpdl_depth ();
|
|
110
|
4326 struct gcpro gcpro1, gcpro2, gcpro3;
|
|
|
4327
|
|
|
4328 XSETBUFFER (old, current_buffer);
|
|
|
4329 GCPRO3 (oquit, listfile, old);
|
|
0
|
4330 check_quit (); /* make Vquit_flag accurate */
|
|
|
4331 /* Ordinarily don't quit within this function,
|
|
|
4332 but don't make it impossible to quit (in case we get hung in I/O). */
|
|
|
4333 oquit = Vquit_flag;
|
|
|
4334 Vquit_flag = Qnil;
|
|
|
4335
|
|
|
4336 /* No further GCPRO needed, because (when it matters) all Lisp_Object
|
|
|
4337 variables point to non-strings reached from Vbuffer_alist. */
|
|
|
4338
|
|
|
4339 if (minibuf_level != 0 || preparing_for_armageddon)
|
|
|
4340 no_message = Qt;
|
|
|
4341
|
|
|
4342 run_hook (Qauto_save_hook);
|
|
|
4343
|
|
|
4344 if (GC_STRINGP (Vauto_save_list_file_name))
|
|
116
|
4345 listfile = condition_case_1 (Qt,
|
|
|
4346 auto_save_expand_name,
|
|
|
4347 Vauto_save_list_file_name,
|
|
|
4348 auto_save_expand_name_error, Qnil);
|
|
0
|
4349
|
|
|
4350 /* Make sure auto_saving is reset. */
|
|
|
4351 record_unwind_protect (do_auto_save_unwind_2, make_int (auto_saving));
|
|
|
4352
|
|
|
4353 auto_saving = 1;
|
|
|
4354
|
|
|
4355 /* First, save all files which don't have handlers. If Emacs is
|
|
|
4356 crashing, the handlers may tweak what is causing Emacs to crash
|
|
|
4357 in the first place, and it would be a shame if Emacs failed to
|
|
|
4358 autosave perfectly ordinary files because it couldn't handle some
|
|
|
4359 ange-ftp'd file. */
|
|
|
4360 for (do_handled_files = 0; do_handled_files < 2; do_handled_files++)
|
|
|
4361 {
|
|
|
4362 for (tail = Vbuffer_alist;
|
|
|
4363 GC_CONSP (tail);
|
|
|
4364 tail = XCDR (tail))
|
|
|
4365 {
|
|
|
4366 buf = XCDR (XCAR (tail));
|
|
|
4367 b = XBUFFER (buf);
|
|
|
4368
|
|
|
4369 if (!GC_NILP (current_only)
|
|
|
4370 && b != current_buffer)
|
|
|
4371 continue;
|
|
151
|
4372
|
|
0
|
4373 /* Don't auto-save indirect buffers.
|
|
|
4374 The base buffer takes care of it. */
|
|
|
4375 if (b->base_buffer)
|
|
|
4376 continue;
|
|
|
4377
|
|
|
4378 /* Check for auto save enabled
|
|
|
4379 and file changed since last auto save
|
|
|
4380 and file changed since last real save. */
|
|
|
4381 if (GC_STRINGP (b->auto_save_file_name)
|
|
|
4382 && BUF_SAVE_MODIFF (b) < BUF_MODIFF (b)
|
|
|
4383 && b->auto_save_modified < BUF_MODIFF (b)
|
|
|
4384 /* -1 means we've turned off autosaving for a while--see below. */
|
|
|
4385 && XINT (b->save_length) >= 0
|
|
|
4386 && (do_handled_files
|
|
|
4387 || NILP (Ffind_file_name_handler (b->auto_save_file_name,
|
|
|
4388 Qwrite_region))))
|
|
|
4389 {
|
|
|
4390 EMACS_TIME before_time, after_time;
|
|
|
4391
|
|
|
4392 EMACS_GET_TIME (before_time);
|
|
|
4393 /* If we had a failure, don't try again for 20 minutes. */
|
|
|
4394 if (!preparing_for_armageddon
|
|
|
4395 && b->auto_save_failure_time >= 0
|
|
|
4396 && (EMACS_SECS (before_time) - b->auto_save_failure_time <
|
|
|
4397 1200))
|
|
|
4398 continue;
|
|
|
4399
|
|
|
4400 if (!preparing_for_armageddon &&
|
|
|
4401 (XINT (b->save_length) * 10
|
|
|
4402 > (BUF_Z (b) - BUF_BEG (b)) * 13)
|
|
|
4403 /* A short file is likely to change a large fraction;
|
|
|
4404 spare the user annoying messages. */
|
|
|
4405 && XINT (b->save_length) > 5000
|
|
|
4406 /* These messages are frequent and annoying for `*mail*'. */
|
|
|
4407 && !EQ (b->filename, Qnil)
|
|
|
4408 && NILP (no_message)
|
|
|
4409 && disable_auto_save_when_buffer_shrinks)
|
|
|
4410 {
|
|
|
4411 /* It has shrunk too much; turn off auto-saving here.
|
|
|
4412 Unless we're about to crash, in which case auto-save it
|
|
|
4413 anyway.
|
|
|
4414 */
|
|
|
4415 message
|
|
|
4416 ("Buffer %s has shrunk a lot; auto save turned off there",
|
|
16
|
4417 XSTRING_DATA (b->name));
|
|
0
|
4418 /* Turn off auto-saving until there's a real save,
|
|
|
4419 and prevent any more warnings. */
|
|
|
4420 b->save_length = make_int (-1);
|
|
|
4421 if (!gc_in_progress)
|
|
|
4422 Fsleep_for (make_int (1));
|
|
|
4423 continue;
|
|
|
4424 }
|
|
|
4425 set_buffer_internal (b);
|
|
|
4426 if (!auto_saved && GC_NILP (no_message))
|
|
|
4427 {
|
|
|
4428 static CONST unsigned char *msg
|
|
|
4429 = (CONST unsigned char *) "Auto-saving...";
|
|
|
4430 echo_area_message (selected_frame (), msg, Qnil,
|
|
|
4431 0, strlen ((CONST char *) msg),
|
|
|
4432 Qauto_saving);
|
|
|
4433 }
|
|
|
4434
|
|
|
4435 /* Open the auto-save list file, if necessary.
|
|
|
4436 We only do this now so that the file only exists
|
|
|
4437 if we actually auto-saved any files. */
|
|
|
4438 if (!auto_saved && GC_STRINGP (listfile) && listdesc < 0)
|
|
|
4439 {
|
|
|
4440 #ifdef DOS_NT
|
|
70
|
4441 listdesc = open ((char *) XSTRING_DATA (listfile),
|
|
167
|
4442 O_WRONLY | O_TRUNC | O_CREAT | O_BINARY,
|
|
0
|
4443 S_IREAD | S_IWRITE);
|
|
|
4444 #else /* not DOS_NT */
|
|
16
|
4445 listdesc = creat ((char *) XSTRING_DATA (listfile), 0666);
|
|
0
|
4446 #endif /* not DOS_NT */
|
|
|
4447
|
|
|
4448 /* Arrange to close that file whether or not we get
|
|
|
4449 an error. */
|
|
|
4450 if (listdesc >= 0)
|
|
|
4451 record_unwind_protect (do_auto_save_unwind,
|
|
|
4452 make_int (listdesc));
|
|
|
4453 }
|
|
|
4454
|
|
|
4455 /* Record all the buffers that we are auto-saving in
|
|
|
4456 the special file that lists them. For each of
|
|
|
4457 these buffers, record visited name (if any) and
|
|
|
4458 auto save name. */
|
|
|
4459 if (listdesc >= 0)
|
|
|
4460 {
|
|
|
4461 Extbyte *auto_save_file_name_ext;
|
|
|
4462 Extcount auto_save_file_name_ext_len;
|
|
151
|
4463
|
|
0
|
4464 GET_STRING_FILENAME_DATA_ALLOCA
|
|
|
4465 (b->auto_save_file_name,
|
|
|
4466 auto_save_file_name_ext,
|
|
|
4467 auto_save_file_name_ext_len);
|
|
|
4468 if (!NILP (b->filename))
|
|
|
4469 {
|
|
|
4470 Extbyte *filename_ext;
|
|
|
4471 Extcount filename_ext_len;
|
|
151
|
4472
|
|
0
|
4473 GET_STRING_FILENAME_DATA_ALLOCA (b->filename,
|
|
|
4474 filename_ext,
|
|
|
4475 filename_ext_len);
|
|
|
4476 write (listdesc, filename_ext, filename_ext_len);
|
|
|
4477 }
|
|
|
4478 write (listdesc, "\n", 1);
|
|
|
4479 write (listdesc, auto_save_file_name_ext,
|
|
|
4480 auto_save_file_name_ext_len);
|
|
|
4481 write (listdesc, "\n", 1);
|
|
|
4482 }
|
|
|
4483
|
|
110
|
4484 /* dmoore - In a bad scenario we've set b=XBUFFER(buf)
|
|
|
4485 based on values in Vbuffer_alist. auto_save_1 may
|
|
|
4486 cause lisp handlers to run. Those handlers may kill
|
|
|
4487 the buffer and then GC. Since the buffer is killed,
|
|
|
4488 it's no longer in Vbuffer_alist so it might get reaped
|
|
|
4489 by the GC. We also need to protect tail. */
|
|
|
4490 /* #### There is probably a lot of other code which has
|
|
|
4491 pointers into buffers which may get blown away by
|
|
|
4492 handlers. */
|
|
|
4493 {
|
|
169
|
4494 struct gcpro ngcpro1, ngcpro2;
|
|
|
4495 NGCPRO2 (buf, tail);
|
|
110
|
4496 condition_case_1 (Qt,
|
|
|
4497 auto_save_1, Qnil,
|
|
|
4498 auto_save_error, Qnil);
|
|
169
|
4499 NUNGCPRO;
|
|
110
|
4500 }
|
|
|
4501 /* Handler killed our saved current-buffer! Pick any. */
|
|
|
4502 if (!BUFFER_LIVE_P (XBUFFER (old)))
|
|
|
4503 XSETBUFFER (old, current_buffer);
|
|
|
4504
|
|
|
4505 set_buffer_internal (XBUFFER (old));
|
|
0
|
4506 auto_saved++;
|
|
151
|
4507
|
|
110
|
4508 /* Handler killed their own buffer! */
|
|
|
4509 if (!BUFFER_LIVE_P(b))
|
|
|
4510 continue;
|
|
|
4511
|
|
0
|
4512 b->auto_save_modified = BUF_MODIFF (b);
|
|
|
4513 b->save_length = make_int (BUF_SIZE (b));
|
|
|
4514 EMACS_GET_TIME (after_time);
|
|
|
4515 /* If auto-save took more than 60 seconds,
|
|
|
4516 assume it was an NFS failure that got a timeout. */
|
|
|
4517 if (EMACS_SECS (after_time) - EMACS_SECS (before_time) > 60)
|
|
|
4518 b->auto_save_failure_time = EMACS_SECS (after_time);
|
|
|
4519 }
|
|
|
4520 }
|
|
|
4521 }
|
|
|
4522
|
|
|
4523 /* Prevent another auto save till enough input events come in. */
|
|
|
4524 if (auto_saved)
|
|
|
4525 record_auto_save ();
|
|
|
4526
|
|
|
4527 /* If we didn't save anything into the listfile, remove the old
|
|
|
4528 one because nothing needed to be auto-saved. Do this afterwards
|
|
|
4529 rather than before in case we get a crash attempting to autosave
|
|
|
4530 (in that case we'd still want the old one around). */
|
|
|
4531 if (listdesc < 0 && !auto_saved && GC_STRINGP (listfile))
|
|
16
|
4532 unlink ((char *) XSTRING_DATA (listfile));
|
|
0
|
4533
|
|
|
4534 /* Show "...done" only if the echo area would otherwise be empty. */
|
|
|
4535 if (auto_saved && NILP (no_message)
|
|
|
4536 && NILP (clear_echo_area (selected_frame (), Qauto_saving, 0)))
|
|
|
4537 {
|
|
|
4538 static CONST unsigned char *msg
|
|
|
4539 = (CONST unsigned char *)"Auto-saving...done";
|
|
|
4540 echo_area_message (selected_frame (), msg, Qnil, 0,
|
|
|
4541 strlen ((CONST char *) msg), Qauto_saving);
|
|
|
4542 }
|
|
|
4543
|
|
|
4544 Vquit_flag = oquit;
|
|
|
4545
|
|
|
4546 RETURN_UNGCPRO (unbind_to (speccount, Qnil));
|
|
|
4547 }
|
|
|
4548
|
|
20
|
4549 DEFUN ("set-buffer-auto-saved", Fset_buffer_auto_saved, 0, 0, 0, /*
|
|
0
|
4550 Mark current buffer as auto-saved with its current text.
|
|
|
4551 No auto-save file will be written until the buffer changes again.
|
|
20
|
4552 */
|
|
|
4553 ())
|
|
0
|
4554 {
|
|
|
4555 current_buffer->auto_save_modified = BUF_MODIFF (current_buffer);
|
|
|
4556 current_buffer->save_length = make_int (BUF_SIZE (current_buffer));
|
|
|
4557 current_buffer->auto_save_failure_time = -1;
|
|
|
4558 return Qnil;
|
|
|
4559 }
|
|
|
4560
|
|
20
|
4561 DEFUN ("clear-buffer-auto-save-failure", Fclear_buffer_auto_save_failure, 0, 0, 0, /*
|
|
0
|
4562 Clear any record of a recent auto-save failure in the current buffer.
|
|
20
|
4563 */
|
|
|
4564 ())
|
|
0
|
4565 {
|
|
|
4566 current_buffer->auto_save_failure_time = -1;
|
|
|
4567 return Qnil;
|
|
|
4568 }
|
|
|
4569
|
|
20
|
4570 DEFUN ("recent-auto-save-p", Frecent_auto_save_p, 0, 0, 0, /*
|
|
0
|
4571 Return t if buffer has been auto-saved since last read in or saved.
|
|
20
|
4572 */
|
|
|
4573 ())
|
|
0
|
4574 {
|
|
|
4575 return (BUF_SAVE_MODIFF (current_buffer) <
|
|
|
4576 current_buffer->auto_save_modified) ? Qt : Qnil;
|
|
|
4577 }
|
|
|
4578
|
|
|
4579
|
|
|
4580 /************************************************************************/
|
|
|
4581 /* initialization */
|
|
|
4582 /************************************************************************/
|
|
|
4583
|
|
|
4584 void
|
|
|
4585 syms_of_fileio (void)
|
|
|
4586 {
|
|
|
4587 defsymbol (&Qexpand_file_name, "expand-file-name");
|
|
|
4588 defsymbol (&Qfile_truename, "file-truename");
|
|
|
4589 defsymbol (&Qsubstitute_in_file_name, "substitute-in-file-name");
|
|
|
4590 defsymbol (&Qdirectory_file_name, "directory-file-name");
|
|
|
4591 defsymbol (&Qfile_name_directory, "file-name-directory");
|
|
|
4592 defsymbol (&Qfile_name_nondirectory, "file-name-nondirectory");
|
|
|
4593 defsymbol (&Qunhandled_file_name_directory, "unhandled-file-name-directory");
|
|
|
4594 defsymbol (&Qfile_name_as_directory, "file-name-as-directory");
|
|
|
4595 defsymbol (&Qcopy_file, "copy-file");
|
|
|
4596 defsymbol (&Qmake_directory_internal, "make-directory-internal");
|
|
|
4597 defsymbol (&Qdelete_directory, "delete-directory");
|
|
|
4598 defsymbol (&Qdelete_file, "delete-file");
|
|
|
4599 defsymbol (&Qrename_file, "rename-file");
|
|
|
4600 defsymbol (&Qadd_name_to_file, "add-name-to-file");
|
|
|
4601 defsymbol (&Qmake_symbolic_link, "make-symbolic-link");
|
|
|
4602 defsymbol (&Qfile_exists_p, "file-exists-p");
|
|
|
4603 defsymbol (&Qfile_executable_p, "file-executable-p");
|
|
|
4604 defsymbol (&Qfile_readable_p, "file-readable-p");
|
|
|
4605 defsymbol (&Qfile_symlink_p, "file-symlink-p");
|
|
|
4606 defsymbol (&Qfile_writable_p, "file-writable-p");
|
|
|
4607 defsymbol (&Qfile_directory_p, "file-directory-p");
|
|
|
4608 defsymbol (&Qfile_regular_p, "file-regular-p");
|
|
|
4609 defsymbol (&Qfile_accessible_directory_p, "file-accessible-directory-p");
|
|
|
4610 defsymbol (&Qfile_modes, "file-modes");
|
|
|
4611 defsymbol (&Qset_file_modes, "set-file-modes");
|
|
|
4612 defsymbol (&Qfile_newer_than_file_p, "file-newer-than-file-p");
|
|
|
4613 defsymbol (&Qinsert_file_contents, "insert-file-contents");
|
|
|
4614 defsymbol (&Qwrite_region, "write-region");
|
|
|
4615 defsymbol (&Qverify_visited_file_modtime, "verify-visited-file-modtime");
|
|
|
4616 defsymbol (&Qset_visited_file_modtime, "set-visited-file-modtime");
|
|
|
4617 defsymbol (&Qset_buffer_modtime, "set-buffer-modtime");
|
|
|
4618 #ifdef DOS_NT
|
|
|
4619 defsymbol (&Qfind_buffer_file_type, "find-buffer-file-type");
|
|
|
4620 #endif /* DOS_NT */
|
|
|
4621 defsymbol (&Qcar_less_than_car, "car-less-than-car"); /* Vomitous! */
|
|
|
4622
|
|
|
4623 defsymbol (&Qfile_name_handler_alist, "file-name-handler-alist");
|
|
|
4624 defsymbol (&Qauto_save_hook, "auto-save-hook");
|
|
|
4625 defsymbol (&Qauto_save_error, "auto-save-error");
|
|
|
4626 defsymbol (&Qauto_saving, "auto-saving");
|
|
|
4627
|
|
|
4628 defsymbol (&Qformat_decode, "format-decode");
|
|
|
4629 defsymbol (&Qformat_annotate_function, "format-annotate-function");
|
|
|
4630
|
|
|
4631 defsymbol (&Qcompute_buffer_file_truename, "compute-buffer-file-truename");
|
|
|
4632 deferror (&Qfile_error, "file-error", "File error", Qio_error);
|
|
|
4633 deferror (&Qfile_already_exists, "file-already-exists",
|
|
|
4634 "File already exists", Qfile_error);
|
|
|
4635
|
|
20
|
4636 DEFSUBR (Ffind_file_name_handler);
|
|
|
4637
|
|
|
4638 DEFSUBR (Ffile_name_directory);
|
|
|
4639 DEFSUBR (Ffile_name_nondirectory);
|
|
|
4640 DEFSUBR (Funhandled_file_name_directory);
|
|
|
4641 DEFSUBR (Ffile_name_as_directory);
|
|
|
4642 DEFSUBR (Fdirectory_file_name);
|
|
|
4643 DEFSUBR (Fmake_temp_name);
|
|
|
4644 DEFSUBR (Fexpand_file_name);
|
|
|
4645 DEFSUBR (Ffile_truename);
|
|
|
4646 DEFSUBR (Fsubstitute_in_file_name);
|
|
|
4647 DEFSUBR (Fcopy_file);
|
|
|
4648 DEFSUBR (Fmake_directory_internal);
|
|
|
4649 DEFSUBR (Fdelete_directory);
|
|
|
4650 DEFSUBR (Fdelete_file);
|
|
|
4651 DEFSUBR (Frename_file);
|
|
|
4652 DEFSUBR (Fadd_name_to_file);
|
|
0
|
4653 #ifdef S_IFLNK
|
|
20
|
4654 DEFSUBR (Fmake_symbolic_link);
|
|
0
|
4655 #endif /* S_IFLNK */
|
|
|
4656 #ifdef HPUX_NET
|
|
20
|
4657 DEFSUBR (Fsysnetunam);
|
|
0
|
4658 #endif /* HPUX_NET */
|
|
20
|
4659 DEFSUBR (Ffile_name_absolute_p);
|
|
|
4660 DEFSUBR (Ffile_exists_p);
|
|
|
4661 DEFSUBR (Ffile_executable_p);
|
|
|
4662 DEFSUBR (Ffile_readable_p);
|
|
|
4663 DEFSUBR (Ffile_writable_p);
|
|
|
4664 DEFSUBR (Ffile_symlink_p);
|
|
|
4665 DEFSUBR (Ffile_directory_p);
|
|
|
4666 DEFSUBR (Ffile_accessible_directory_p);
|
|
|
4667 DEFSUBR (Ffile_regular_p);
|
|
|
4668 DEFSUBR (Ffile_modes);
|
|
|
4669 DEFSUBR (Fset_file_modes);
|
|
|
4670 DEFSUBR (Fset_default_file_modes);
|
|
|
4671 DEFSUBR (Fdefault_file_modes);
|
|
|
4672 DEFSUBR (Funix_sync);
|
|
|
4673 DEFSUBR (Ffile_newer_than_file_p);
|
|
|
4674 DEFSUBR (Finsert_file_contents_internal);
|
|
|
4675 DEFSUBR (Fwrite_region_internal);
|
|
|
4676 DEFSUBR (Fcar_less_than_car); /* Vomitous! */
|
|
|
4677 DEFSUBR (Fcdr_less_than_cdr); /* Yeah oh yeah bucko .... */
|
|
0
|
4678 #if 0
|
|
20
|
4679 DEFSUBR (Fencrypt_string);
|
|
|
4680 DEFSUBR (Fdecrypt_string);
|
|
0
|
4681 #endif
|
|
20
|
4682 DEFSUBR (Fverify_visited_file_modtime);
|
|
|
4683 DEFSUBR (Fclear_visited_file_modtime);
|
|
|
4684 DEFSUBR (Fvisited_file_modtime);
|
|
|
4685 DEFSUBR (Fset_visited_file_modtime);
|
|
|
4686 DEFSUBR (Fset_buffer_modtime);
|
|
|
4687
|
|
|
4688 DEFSUBR (Fdo_auto_save);
|
|
|
4689 DEFSUBR (Fset_buffer_auto_saved);
|
|
|
4690 DEFSUBR (Fclear_buffer_auto_save_failure);
|
|
|
4691 DEFSUBR (Frecent_auto_save_p);
|
|
0
|
4692 }
|
|
|
4693
|
|
|
4694 void
|
|
|
4695 vars_of_fileio (void)
|
|
|
4696 {
|
|
|
4697 DEFVAR_LISP ("auto-save-file-format", &Vauto_save_file_format /*
|
|
|
4698 *Format in which to write auto-save files.
|
|
|
4699 Should be a list of symbols naming formats that are defined in `format-alist'.
|
|
|
4700 If it is t, which is the default, auto-save files are written in the
|
|
|
4701 same format as a regular save would use.
|
|
|
4702 */ );
|
|
|
4703 Vauto_save_file_format = Qt;
|
|
|
4704
|
|
|
4705 DEFVAR_LISP ("file-name-handler-alist", &Vfile_name_handler_alist /*
|
|
|
4706 *Alist of elements (REGEXP . HANDLER) for file names handled specially.
|
|
|
4707 If a file name matches REGEXP, then all I/O on that file is done by calling
|
|
|
4708 HANDLER.
|
|
|
4709
|
|
|
4710 The first argument given to HANDLER is the name of the I/O primitive
|
|
|
4711 to be handled; the remaining arguments are the arguments that were
|
|
|
4712 passed to that primitive. For example, if you do
|
|
|
4713 (file-exists-p FILENAME)
|
|
|
4714 and FILENAME is handled by HANDLER, then HANDLER is called like this:
|
|
|
4715 (funcall HANDLER 'file-exists-p FILENAME)
|
|
|
4716 The function `find-file-name-handler' checks this list for a handler
|
|
|
4717 for its argument.
|
|
|
4718 */ );
|
|
|
4719 Vfile_name_handler_alist = Qnil;
|
|
|
4720
|
|
|
4721 DEFVAR_LISP ("after-insert-file-functions", &Vafter_insert_file_functions /*
|
|
|
4722 A list of functions to be called at the end of `insert-file-contents'.
|
|
|
4723 Each is passed one argument, the number of bytes inserted. It should return
|
|
|
4724 the new byte count, and leave point the same. If `insert-file-contents' is
|
|
|
4725 intercepted by a handler from `file-name-handler-alist', that handler is
|
|
|
4726 responsible for calling the after-insert-file-functions if appropriate.
|
|
|
4727 */ );
|
|
|
4728 Vafter_insert_file_functions = Qnil;
|
|
|
4729
|
|
|
4730 DEFVAR_LISP ("write-region-annotate-functions",
|
|
|
4731 &Vwrite_region_annotate_functions /*
|
|
|
4732 A list of functions to be called at the start of `write-region'.
|
|
183
|
4733 Each is passed two arguments, START and END, as for `write-region'.
|
|
0
|
4734 It should return a list of pairs (POSITION . STRING) of strings to be
|
|
|
4735 effectively inserted at the specified positions of the file being written
|
|
|
4736 \(1 means to insert before the first byte written). The POSITIONs must be
|
|
|
4737 sorted into increasing order. If there are several functions in the list,
|
|
|
4738 the several lists are merged destructively.
|
|
|
4739 */ );
|
|
|
4740 Vwrite_region_annotate_functions = Qnil;
|
|
|
4741
|
|
|
4742 DEFVAR_LISP ("write-region-annotations-so-far",
|
|
|
4743 &Vwrite_region_annotations_so_far /*
|
|
|
4744 When an annotation function is called, this holds the previous annotations.
|
|
|
4745 These are the annotations made by other annotation functions
|
|
|
4746 that were already called. See also `write-region-annotate-functions'.
|
|
|
4747 */ );
|
|
|
4748 Vwrite_region_annotations_so_far = Qnil;
|
|
|
4749
|
|
|
4750 DEFVAR_LISP ("inhibit-file-name-handlers", &Vinhibit_file_name_handlers /*
|
|
|
4751 A list of file name handlers that temporarily should not be used.
|
|
|
4752 This applies only to the operation `inhibit-file-name-operation'.
|
|
|
4753 */ );
|
|
|
4754 Vinhibit_file_name_handlers = Qnil;
|
|
|
4755
|
|
|
4756 DEFVAR_LISP ("inhibit-file-name-operation", &Vinhibit_file_name_operation /*
|
|
|
4757 The operation for which `inhibit-file-name-handlers' is applicable.
|
|
|
4758 */ );
|
|
|
4759 Vinhibit_file_name_operation = Qnil;
|
|
|
4760
|
|
|
4761 DEFVAR_LISP ("auto-save-list-file-name", &Vauto_save_list_file_name /*
|
|
|
4762 File name in which we write a list of all auto save file names.
|
|
|
4763 */ );
|
|
|
4764 Vauto_save_list_file_name = Qnil;
|
|
|
4765
|
|
|
4766 DEFVAR_BOOL ("disable-auto-save-when-buffer-shrinks",
|
|
|
4767 &disable_auto_save_when_buffer_shrinks /*
|
|
|
4768 If non-nil, auto-saving is disabled when a buffer shrinks too much.
|
|
|
4769 This is to prevent you from losing your edits if you accidentally
|
|
|
4770 delete a large chunk of the buffer and don't notice it until too late.
|
|
|
4771 Saving the buffer normally turns auto-save back on.
|
|
|
4772 */ );
|
|
|
4773 disable_auto_save_when_buffer_shrinks = 1;
|
|
211
|
4774 #ifdef DOS_NT
|
|
|
4775 DEFVAR_LISP ("directory-sep-char", &Vdirectory_sep_char /*
|
|
|
4776 *Directory separator character for built-in functions that return file names.
|
|
|
4777 The value should be either ?/ or ?\\ (any other value is treated as ?\\).
|
|
|
4778 This variable affects the built-in functions only on Windows,
|
|
|
4779 on other platforms, it is initialized so that Lisp code can find out
|
|
|
4780 what the normal separator is.
|
|
|
4781 */ );
|
|
|
4782 Vdirectory_sep_char = '/';
|
|
|
4783
|
|
|
4784 DEFVAR_LISP ("insert-file-contents-allow-replace", &Vinsert_file_contents_allow_replace /*
|
|
|
4785 *Allow REPLACE option of insert-file-contents to preserve markers.
|
|
|
4786 If non-nil, the REPLACE option works as described, preserving markers.
|
|
|
4787 If nil, the REPLACE option is implemented by deleting the visible region
|
|
|
4788 then inserting the file contents as if REPLACE was nil.
|
|
|
4789
|
|
|
4790 This option is only meaningful on Windows.
|
|
|
4791 */ );
|
|
|
4792 Vinsert_file_contents_allow_replace = Qt;
|
|
|
4793 #endif
|
|
0
|
4794 }
|
