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428
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1 /* fast dired replacement routines for mswindows.
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2 Copyright (C) 1998 Darryl Okahata
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3 Portions Copyright (C) 1992, 1994 by Sebastian Kremer <sk@thp.uni-koeln.de>
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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: Not in FSF. */
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23
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24 /*
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25 * Parts of this code (& comments) were taken from ls-lisp.el
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26 * Author: Sebastian Kremer <sk@thp.uni-koeln.de>
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27 */
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28
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29 /*
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30 * insert-directory
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31 * - must insert _exactly_one_line_ describing FILE if WILDCARD and
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32 * FULL-DIRECTORY-P is nil.
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33 * The single line of output must display FILE's name as it was
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34 * given, namely, an absolute path name.
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35 * - must insert exactly one line for each file if WILDCARD or
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36 * FULL-DIRECTORY-P is t, plus one optional "total" line
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37 * before the file lines, plus optional text after the file lines.
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38 * Lines are delimited by "\n", so filenames containing "\n" are not
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39 * allowed.
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40 * File lines should display the basename.
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41 * - must be consistent with
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42 * - functions dired-move-to-filename, (these two define what a file line is)
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43 * dired-move-to-end-of-filename,
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44 * dired-between-files, (shortcut for (not (dired-move-to-filename)))
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45 * dired-insert-headerline
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46 * dired-after-subdir-garbage (defines what a "total" line is)
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47 * - variable dired-subdir-regexp
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48 */
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49
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50 /*
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51 * Insert directory listing for FILE, formatted according to SWITCHES.
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52 * Leaves point after the inserted text.
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53 * SWITCHES may be a string of options, or a list of strings.
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54 * Optional third arg WILDCARD means treat FILE as shell wildcard.
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55 * Optional fourth arg FULL-DIRECTORY-P means file is a directory and
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56 * switches do not contain `d', so that a full listing is expected.
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57 *
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58 * This works by running a directory listing program
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59 * whose name is in the variable `insert-directory-program'.
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60 * If WILDCARD, it also runs the shell specified by `shell-file-name'."
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61 */
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62
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63 /*
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64 * Set INDENT_LISTING to non-zero if the inserted text should be shifted
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65 * over by two spaces.
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66 */
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67 #define INDENT_LISTING 0
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68
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69 #define ROUND_FILE_SIZES 4096
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70
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71
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72 #include <config.h>
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73 #include "lisp.h"
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74
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75 #include "buffer.h"
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76 #include "regex.h"
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77
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78 #include "sysdir.h"
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79 #include "sysproc.h"
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442
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80 #include "sysfile.h"
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428
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81
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82 #include <time.h>
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83
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84 #include <winsock.h> /* To make nt.h happy */
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85 #include "nt.h" /* For prototypes */
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86
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87 #if ROUND_FILE_SIZES > 0
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88 #include <math.h> /* for floor() */
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89 #endif
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90
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91
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92 static int mswindows_ls_sort_case_insensitive;
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93 static int mswindows_ls_round_file_size;
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94
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95 Lisp_Object Qmswindows_insert_directory;
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96
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97 extern Lisp_Object Vmswindows_downcase_file_names; /* in device-msw.c */
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98
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99
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100
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101 enum mswindows_sortby {
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102 MSWINDOWS_SORT_BY_NAME,
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103 MSWINDOWS_SORT_BY_NAME_NOCASE,
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104 MSWINDOWS_SORT_BY_MOD_DATE,
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105 MSWINDOWS_SORT_BY_SIZE
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106 };
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107
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108
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109 static enum mswindows_sortby mswindows_sort_method;
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110 static int mswindows_reverse_sort;
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111
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112
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113 #define CMPDWORDS(t1a, t1b, t2a, t2b) \
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114 (((t1a) == (t2a)) ? (((t1b) == (t2b)) ? 0 : (((t1b) < (t2b)) ? -1 : 1)) \
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115 : (((t1a) < (t2a)) ? -1 : 1))
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116
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117
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118 static int
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119 mswindows_ls_sort_fcn (const void *elem1, const void *elem2)
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120 {
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121 WIN32_FIND_DATA *e1, *e2;
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122 int status;
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123
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124 e1 = *(WIN32_FIND_DATA **)elem1;
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125 e2 = *(WIN32_FIND_DATA **)elem2;
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126 switch (mswindows_sort_method)
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127 {
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128 case MSWINDOWS_SORT_BY_NAME:
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129 status = strcmp(e1->cFileName, e2->cFileName);
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130 break;
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131 case MSWINDOWS_SORT_BY_NAME_NOCASE:
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132 status = _stricmp(e1->cFileName, e2->cFileName);
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133 break;
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134 case MSWINDOWS_SORT_BY_MOD_DATE:
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135 status = CMPDWORDS(e1->ftLastWriteTime.dwHighDateTime,
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136 e1->ftLastWriteTime.dwLowDateTime,
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137 e2->ftLastWriteTime.dwHighDateTime,
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138 e2->ftLastWriteTime.dwLowDateTime);
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139 break;
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140 case MSWINDOWS_SORT_BY_SIZE:
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141 status = CMPDWORDS(e1->nFileSizeHigh, e1->nFileSizeLow,
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142 e2->nFileSizeHigh, e2->nFileSizeLow);
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143 break;
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144 default:
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145 status = 0;
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146 break;
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147 }
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148 if (mswindows_reverse_sort)
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149 {
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150 status = -status;
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151 }
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152 return (status);
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153 }
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154
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155
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156 static void
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157 mswindows_sort_files (WIN32_FIND_DATA **files, int nfiles,
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158 enum mswindows_sortby sort_by, int reverse)
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159 {
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160 mswindows_sort_method = sort_by;
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161 mswindows_reverse_sort = reverse;
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162 qsort(files, nfiles, sizeof(WIN32_FIND_DATA *), mswindows_ls_sort_fcn);
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163 }
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164
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165
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166 static WIN32_FIND_DATA *
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167 mswindows_get_files (char *dirfile, int nowild, Lisp_Object pattern,
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168 int hide_dot, int hide_system, int *nfiles)
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169 {
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170 WIN32_FIND_DATA *files;
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171 int array_size;
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172 struct re_pattern_buffer *bufp = NULL;
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173 int findex, len;
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174 char win32pattern[MAXNAMLEN+3];
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175 HANDLE fh;
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176
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177 /*
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178 * Much of the following code and comments were taken from dired.c.
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179 * Yes, this is something of a waste, but we want speed, speed, SPEED.
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180 */
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181 files = NULL;
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182 array_size = *nfiles = 0;
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183 while (1)
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184 {
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185 if (!NILP(pattern))
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186 {
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187 /* PATTERN might be a flawed regular expression. Rather than
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188 catching and signalling our own errors, we just call
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189 compile_pattern to do the work for us. */
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446
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190 bufp = compile_pattern (pattern, 0, Qnil, 0, ERROR_ME);
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428
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191 }
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192 /* Now *bufp is the compiled form of PATTERN; don't call anything
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193 which might compile a new regexp until we're done with the loop! */
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194
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195 /* Initialize file info array */
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196 array_size = 100; /* initial size */
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197 files = xmalloc(array_size * sizeof (WIN32_FIND_DATA));
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198
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199 /* for Win32, we need to insure that the pathname ends with "\*". */
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200 strcpy (win32pattern, dirfile);
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201 if (!nowild)
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202 {
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203 len = strlen (win32pattern) - 1;
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204 if (!IS_DIRECTORY_SEP (win32pattern[len]))
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205 strcat (win32pattern, "\\");
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206 strcat (win32pattern, "*");
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207 }
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208
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209 /*
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210 * Here, we use FindFirstFile()/FindNextFile() instead of opendir(),
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442
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211 * xemacs_stat(), & friends, because xemacs_stat() is VERY expensive in
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212 * terms of time. Hence, we take the time to write complicated
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213 * Win32-specific code, instead of simple Unix-style stuff.
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428
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214 */
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215 findex = 0;
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216 fh = INVALID_HANDLE_VALUE;
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217
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218 while (1)
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219 {
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220 int len;
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221 char *filename;
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222 int result;
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223
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224 if (fh == INVALID_HANDLE_VALUE)
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225 {
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226 fh = FindFirstFile(win32pattern, &files[findex]);
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227 if (fh == INVALID_HANDLE_VALUE)
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228 {
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229 report_file_error ("Opening directory",
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230 list1(build_string(dirfile)));
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231 }
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232 }
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233 else
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234 {
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235 if (!FindNextFile(fh, &files[findex]))
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236 {
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237 if (GetLastError() == ERROR_NO_MORE_FILES)
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238 {
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239 break;
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240 }
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241 FindClose(fh);
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242 report_file_error ("Reading directory",
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243 list1(build_string(dirfile)));
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244 }
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245 }
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246
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247 filename = files[findex].cFileName;
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248 if (!NILP(Vmswindows_downcase_file_names))
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249 {
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250 strlwr(filename);
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251 }
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252 len = strlen(filename);
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253 result = (NILP(pattern)
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254 || (0 <= re_search (bufp, filename,
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255 len, 0, len, 0)));
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256 if (result)
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257 {
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258 if ( ! (filename[0] == '.' &&
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259 ((hide_system && (filename[1] == '\0' ||
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260 (filename[1] == '.' &&
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261 filename[2] == '\0'))) ||
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262 hide_dot)))
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263 {
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264 if (++findex >= array_size)
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265 {
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266 array_size = findex * 2;
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267 files = xrealloc(files,
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268 array_size * sizeof(WIN32_FIND_DATA));
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269 }
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270 }
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271 }
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272 }
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273 if (fh != INVALID_HANDLE_VALUE)
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274 {
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275 FindClose (fh);
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276 }
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277 *nfiles = findex;
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278 break;
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279 }
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280 return (files);
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281 }
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282
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283
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284 static void
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285 mswindows_format_file (WIN32_FIND_DATA *file, char *buf, int display_size,
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286 int add_newline)
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287 {
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288 char *cptr;
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289 int len;
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290 Lisp_Object luser;
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291 double file_size;
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292
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293 len = strlen(file->cFileName);
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294 file_size =
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295 file->nFileSizeHigh * (double)UINT_MAX + file->nFileSizeLow;
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296 cptr = buf;
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297 #if INDENT_LISTING
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298 *cptr++ = ' ';
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299 *cptr++ = ' ';
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300 #endif
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301 if (display_size)
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302 {
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303 sprintf(cptr, "%6d ", (int)((file_size + 1023.) / 1024.));
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304 cptr += 7;
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305 }
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306 if (file->dwFileAttributes & FILE_ATTRIBUTE_DIRECTORY)
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307 {
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308 *cptr++ = 'd';
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309 } else {
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310 *cptr++ = '-';
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311 }
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312 cptr[0] = cptr[3] = cptr[6] = 'r';
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313 if (file->dwFileAttributes & FILE_ATTRIBUTE_READONLY)
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314 {
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315 cptr[1] = cptr[4] = cptr[7] = '-';
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316 } else {
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317 cptr[1] = cptr[4] = cptr[7] = 'w';
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318 }
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319 if ((file->dwFileAttributes & FILE_ATTRIBUTE_DIRECTORY) ||
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320 (len > 4 &&
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321 (_stricmp(&file->cFileName[len - 4], ".exe") == 0
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322 || _stricmp(&file->cFileName[len - 4], ".com") == 0
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323 || _stricmp(&file->cFileName[len - 4], ".bat") == 0
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324 #if 0
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325 || _stricmp(&file->cFileName[len - 4], ".pif") == 0
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326 #endif
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327 )))
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328 {
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329 cptr[2] = cptr[5] = cptr[8] = 'x';
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330 } else {
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331 cptr[2] = cptr[5] = cptr[8] = '-';
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332 }
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333 cptr += 9;
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334 if (file->dwFileAttributes & FILE_ATTRIBUTE_DIRECTORY)
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335 {
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336 strcpy(cptr, " 2 ");
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337 } else {
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338 strcpy(cptr, " 1 ");
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339 }
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340 cptr += 5;
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341 luser = Fuser_login_name(Qnil);
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342 if (!STRINGP(luser))
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343 {
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344 sprintf(cptr, "%-9d", 0);
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345 } else {
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346 char *str;
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347
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348 str = XSTRING_DATA(luser);
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349 sprintf(cptr, "%-8s ", str);
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350 }
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351 while (*cptr)
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352 {
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353 ++cptr;
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354 }
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355 sprintf(cptr, "%-8d ", getgid());
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356 cptr += 9;
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357 if (file_size > 99999999.0)
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358 {
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359 file_size = (file_size + 1023.0) / 1024.;
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360 if (file_size > 999999.0)
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361 {
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362 sprintf(cptr, "%6.0fMB ", (file_size + 1023.0) / 1024.);
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363 } else {
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364 sprintf(cptr, "%6.0fKB ", file_size);
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365 }
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366 } else {
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367 sprintf(cptr, "%8.0f ", file_size);
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368 }
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369 while (*cptr)
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370 {
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371 ++cptr;
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372 }
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373 {
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374 time_t t, now;
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375 char *ctimebuf;
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376 extern char *sys_ctime(const time_t *t); /* in nt.c */
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377
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378 if (
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379 #if 0
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|
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380 /*
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381 * This doesn't work.
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382 * This code should be correct ...
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383 */
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384 FileTimeToLocalFileTime(&file->ftLastWriteTime, &localtime) &&
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385 ((t = convert_time(localtime)) != 0) &&
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386 #else
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387 /*
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388 * But this code "works" ...
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389 */
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390 ((t = convert_time(file->ftLastWriteTime)) != 0) &&
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391 #endif
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|
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392 ((ctimebuf = sys_ctime(&t)) != NULL))
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|
393 {
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394 memcpy(cptr, &ctimebuf[4], 7);
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395 now = time(NULL);
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396 if (now - t > (365. / 2.0) * 86400.)
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|
|
397 {
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|
|
398 /* more than 6 months */
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|
|
399 cptr[7] = ' ';
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|
|
400 memcpy(&cptr[8], &ctimebuf[20], 4);
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|
|
401 } else {
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|
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402 /* less than 6 months */
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403 memcpy(&cptr[7], &ctimebuf[11], 5);
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|
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404 }
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405 cptr += 12;
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|
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406 *cptr++ = ' ';
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|
|
407 }
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|
|
408 }
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|
|
409 if (add_newline)
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|
|
410 {
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|
|
411 sprintf(cptr, "%s\n", file->cFileName);
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|
|
412 }
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|
|
413 else
|
|
|
414 {
|
|
|
415 strcpy(cptr, file->cFileName);
|
|
|
416 }
|
|
|
417 }
|
|
|
418
|
|
|
419
|
|
|
420 DEFUN ("mswindows-insert-directory", Fmswindows_insert_directory, 2, 4, 0, /*
|
|
|
421 Insert directory listing for FILE, formatted according to SWITCHES.
|
|
|
422 Leaves point after the inserted text.
|
|
|
423 SWITCHES may be a string of options, or a list of strings.
|
|
|
424 Optional third arg WILDCARD means treat FILE as shell wildcard.
|
|
|
425 Optional fourth arg FULL-DIRECTORY-P means file is a directory and
|
|
|
426 switches do not contain `d', so that a full listing is expected.
|
|
|
427 */
|
|
|
428 (file, switches, wildcard, full_directory_p))
|
|
|
429 {
|
|
|
430 Lisp_Object result, handler, wildpat, fns, basename;
|
|
|
431 char *filename;
|
|
|
432 char *switchstr;
|
|
|
433 int len, nfiles, i;
|
|
|
434 int hide_system, hide_dot, reverse, display_size;
|
|
|
435 WIN32_FIND_DATA *files, **sorted_files;
|
|
|
436 enum mswindows_sortby sort_by;
|
|
|
437 char fmtbuf[MAXNAMLEN+100]; /* larger than necessary */
|
|
|
438 struct gcpro gcpro1, gcpro2, gcpro3, gcpro4, gcpro5;
|
|
|
439
|
|
|
440 result = Qnil;
|
|
|
441 wildpat = Qnil;
|
|
|
442 fns = Qnil;
|
|
|
443 basename = Qnil;
|
|
|
444 GCPRO5(result, file, wildpat, fns, basename);
|
|
|
445 sorted_files = NULL;
|
|
|
446 switchstr = NULL;
|
|
|
447 hide_system = 1;
|
|
|
448 hide_dot = 1;
|
|
|
449 display_size = 0;
|
|
|
450 reverse = 0;
|
|
|
451 sort_by = (mswindows_ls_sort_case_insensitive
|
|
|
452 ? MSWINDOWS_SORT_BY_NAME_NOCASE
|
|
|
453 : MSWINDOWS_SORT_BY_NAME);
|
|
|
454 nfiles = 0;
|
|
|
455 while (1)
|
|
|
456 {
|
|
|
457 handler = Ffind_file_name_handler (file, Qmswindows_insert_directory);
|
|
|
458 if (!NILP(handler))
|
|
|
459 {
|
|
|
460 result = call5(handler, Qmswindows_insert_directory, file, switches,
|
|
|
461 wildcard, full_directory_p);
|
|
|
462 break;
|
|
|
463 }
|
|
|
464 CHECK_STRING (file);
|
|
|
465 if (!NILP(switches))
|
|
|
466 {
|
|
|
467 char *cptr;
|
|
|
468
|
|
|
469 CHECK_STRING (switches);
|
|
|
470 switchstr = XSTRING_DATA(switches);
|
|
|
471 for (cptr = switchstr; *cptr; ++cptr)
|
|
|
472 {
|
|
|
473 switch (*cptr)
|
|
|
474 {
|
|
|
475 case 'A':
|
|
|
476 hide_dot = 0;
|
|
|
477 break;
|
|
|
478 case 'a':
|
|
|
479 hide_system = 0;
|
|
|
480 hide_dot = 0;
|
|
|
481 break;
|
|
|
482 case 'r':
|
|
|
483 reverse = 1;
|
|
|
484 break;
|
|
|
485 case 's':
|
|
|
486 display_size = 1;
|
|
|
487 break;
|
|
|
488 case 'S':
|
|
|
489 sort_by = MSWINDOWS_SORT_BY_SIZE;
|
|
|
490 break;
|
|
|
491 case 't':
|
|
|
492 sort_by = MSWINDOWS_SORT_BY_MOD_DATE;
|
|
|
493 break;
|
|
|
494 }
|
|
|
495 }
|
|
|
496 }
|
|
|
497
|
|
|
498 /*
|
|
|
499 * Sometimes we get ".../foo* /" as FILE (without the space).
|
|
|
500 * While the shell and `ls' don't mind, we certainly do,
|
|
|
501 * because it makes us think there is no wildcard, only a
|
|
|
502 * directory name.
|
|
|
503 */
|
|
|
504 if (!NILP(Fstring_match(build_string("[[?*]"), file, Qnil, Qnil)))
|
|
|
505 {
|
|
|
506 wildcard = Qt;
|
|
|
507 filename = XSTRING_DATA(file);
|
|
|
508 len = strlen(filename);
|
|
|
509 if (len > 0 && (filename[len - 1] == '\\' ||
|
|
|
510 filename[len - 1] == '/'))
|
|
|
511 {
|
|
|
512 filename[len - 1] = '\0';
|
|
|
513 }
|
|
|
514 file = build_string(filename);
|
|
|
515 }
|
|
|
516 if (!NILP(wildcard))
|
|
|
517 {
|
|
|
518 Lisp_Object newfile;
|
|
|
519
|
|
|
520 basename = Ffile_name_nondirectory(file);
|
|
|
521 fns = intern("wildcard-to-regexp");
|
|
|
522 wildpat = call1(fns, basename);
|
|
|
523 newfile = Ffile_name_directory(file);
|
|
|
524 if (NILP(newfile))
|
|
|
525 {
|
|
|
526 /* Ffile_name_directory() can GC */
|
|
|
527 newfile = Ffile_name_directory(Fexpand_file_name(file, Qnil));
|
|
|
528 }
|
|
|
529 file = newfile;
|
|
|
530 }
|
|
|
531 if (!NILP(wildcard) || !NILP(full_directory_p))
|
|
|
532 {
|
|
|
533 CHECK_STRING(file);
|
|
|
534 if (!NILP(wildpat))
|
|
|
535 {
|
|
|
536 CHECK_STRING(wildpat);
|
|
|
537 }
|
|
|
538
|
|
|
539 files = mswindows_get_files(XSTRING_DATA(file), FALSE, wildpat,
|
|
|
540 hide_dot, hide_system, &nfiles);
|
|
|
541 if (files == NULL || nfiles == 0)
|
|
|
542 {
|
|
|
543 break;
|
|
|
544 }
|
|
|
545 }
|
|
|
546 else
|
|
|
547 {
|
|
|
548 files = mswindows_get_files(XSTRING_DATA(file), TRUE, wildpat,
|
|
|
549 hide_dot, hide_system, &nfiles);
|
|
|
550 }
|
|
|
551 if ((sorted_files = xmalloc(nfiles * sizeof(WIN32_FIND_DATA *)))
|
|
|
552 == NULL)
|
|
|
553 {
|
|
|
554 break;
|
|
|
555 }
|
|
|
556 for (i = 0; i < nfiles; ++i)
|
|
|
557 {
|
|
|
558 sorted_files[i] = &files[i];
|
|
|
559 }
|
|
|
560 if (nfiles > 1)
|
|
|
561 {
|
|
|
562 mswindows_sort_files(sorted_files, nfiles, sort_by, reverse);
|
|
|
563 }
|
|
|
564 if (!NILP(wildcard) || !NILP(full_directory_p))
|
|
|
565 {
|
|
|
566 /*
|
|
|
567 * By using doubles, we can handle files up to 2^53 bytes in
|
|
|
568 * size (IEEE doubles have 53 bits of resolution). However,
|
|
|
569 * as we divide by 1024 (or 2^10), the total size is
|
|
|
570 * accurate up to 2^(53+10) --> 2^63 bytes.
|
|
|
571 *
|
|
|
572 * Hopefully, we won't have to handle these file sizes anytime
|
|
|
573 * soon.
|
|
|
574 */
|
|
|
575 double total_size, file_size, block_size;
|
|
|
576
|
|
|
577 if ((block_size = mswindows_ls_round_file_size) <= 0)
|
|
|
578 {
|
|
|
579 block_size = 0;
|
|
|
580 }
|
|
|
581 total_size = 0;
|
|
|
582 for (i = 0; i < nfiles; ++i)
|
|
|
583 {
|
|
|
584 file_size =
|
|
|
585 sorted_files[i]->nFileSizeHigh * (double)UINT_MAX +
|
|
|
586 sorted_files[i]->nFileSizeLow;
|
|
|
587 if (block_size > 0)
|
|
|
588 {
|
|
|
589 /*
|
|
|
590 * Round file_size up to the next nearest block size.
|
|
|
591 */
|
|
|
592 file_size =
|
|
|
593 floor((file_size + block_size - 1) / block_size)
|
|
|
594 * block_size;
|
|
|
595 }
|
|
|
596 /* Here, we round to the nearest 1K */
|
|
|
597 total_size += floor((file_size + 512.) / 1024.);
|
|
|
598 }
|
|
|
599 sprintf(fmtbuf,
|
|
|
600 #if INDENT_LISTING
|
|
|
601 /* ANSI C compilers auto-concatenate adjacent strings */
|
|
|
602 " "
|
|
|
603 #endif
|
|
|
604 "total %.0f\n", total_size);
|
|
|
605 buffer_insert1(current_buffer, build_string(fmtbuf));
|
|
|
606 }
|
|
|
607 for (i = 0; i < nfiles; ++i)
|
|
|
608 {
|
|
|
609 mswindows_format_file(sorted_files[i], fmtbuf, display_size, TRUE);
|
|
|
610 buffer_insert1(current_buffer, build_string(fmtbuf));
|
|
|
611 }
|
|
|
612 break;
|
|
|
613 }
|
|
|
614 if (sorted_files)
|
|
|
615 {
|
|
|
616 xfree(sorted_files);
|
|
|
617 }
|
|
|
618 UNGCPRO;
|
|
|
619 return (result);
|
|
|
620 }
|
|
|
621
|
|
|
622
|
|
|
623
|
|
|
624 /************************************************************************/
|
|
|
625 /* initialization */
|
|
|
626 /************************************************************************/
|
|
|
627
|
|
|
628 void
|
|
|
629 syms_of_dired_mswindows (void)
|
|
|
630 {
|
|
|
631 defsymbol (&Qmswindows_insert_directory, "mswindows-insert-directory");
|
|
|
632
|
|
|
633 DEFSUBR (Fmswindows_insert_directory);
|
|
|
634 }
|
|
|
635
|
|
|
636
|
|
|
637 void
|
|
|
638 vars_of_dired_mswindows (void)
|
|
|
639 {
|
|
|
640 DEFVAR_BOOL ("mswindows-ls-sort-case-insensitive", &mswindows_ls_sort_case_insensitive /*
|
|
|
641 *Non-nil means filenames are sorted in a case-insensitive fashion.
|
|
|
642 Nil means filenames are sorted in a case-sensitive fashion, just like Unix.
|
|
|
643 */ );
|
|
|
644 mswindows_ls_sort_case_insensitive = 1;
|
|
|
645
|
|
|
646 DEFVAR_INT ("mswindows-ls-round-file-size", &mswindows_ls_round_file_size /*
|
|
|
647 *If non-zero, file sizes are rounded in terms of this block size when
|
|
|
648 the file totals are being calculated. This is useful for getting a more
|
|
|
649 accurate estimate of allocated disk space. Note that this only affects
|
|
|
650 the total size calculation; the individual displayed file sizes are not
|
|
|
651 changed. This block size should also be a power of 2 (but this is not
|
|
|
652 enforced), as filesystem block (cluster) sizes are typically powers-of-2.
|
|
|
653 */ );
|
|
|
654 /*
|
|
|
655 * Here, we choose 4096 because it's the cluster size for both FAT32
|
|
|
656 * and NTFS (?). This is probably much too small for people using
|
|
|
657 * plain FAT, but, hopefully, plain FAT will go away someday.
|
|
|
658 *
|
|
|
659 * We should allow something like a alist here, to make the size
|
|
|
660 * dependent on the drive letter, etc..
|
|
|
661 */
|
|
|
662 mswindows_ls_round_file_size = 4096;
|
|
|
663 }
|
