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263
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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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288
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78 #include "sysdir.h"
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263
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79 #include "sysfile.h"
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288
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80 #include "sysproc.h"
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263
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81
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82 #include <windows.h>
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272
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83 #include <limits.h>
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288
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84 #include <time.h>
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85
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86 #include <winsock.h> /* To make nt.h happy */
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87 #include "nt.h" /* For prototypes */
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263
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88
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89 #if ROUND_FILE_SIZES > 0
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90 #include <math.h> /* for floor() */
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91 #endif
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92
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93
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282
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94 static int mswindows_ls_sort_case_insensitive;
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95 static int mswindows_ls_round_file_size;
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96
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263
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97 Lisp_Object Qmswindows_insert_directory;
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98
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99 extern Lisp_Object Vmswindows_downcase_file_names; /* in device-msw.c */
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100
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101
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282
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102
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263
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103 enum mswindows_sortby {
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104 MSWINDOWS_SORT_BY_NAME,
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105 MSWINDOWS_SORT_BY_NAME_NOCASE,
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106 MSWINDOWS_SORT_BY_MOD_DATE,
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107 MSWINDOWS_SORT_BY_SIZE
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108 };
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109
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110
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111 static enum mswindows_sortby mswindows_sort_method;
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112 static int mswindows_reverse_sort;
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113
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114
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115 #define CMPDWORDS(t1a, t1b, t2a, t2b) \
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116 (((t1a) == (t2a)) ? (((t1b) == (t2b)) ? 0 : (((t1b) < (t2b)) ? -1 : 1)) \
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117 : (((t1a) < (t2a)) ? -1 : 1))
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118
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119
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120 static int
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121 mswindows_ls_sort_fcn (const void *elem1, const void *elem2)
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122 {
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123 WIN32_FIND_DATA *e1, *e2;
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124 int status;
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125
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126 e1 = *(WIN32_FIND_DATA **)elem1;
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127 e2 = *(WIN32_FIND_DATA **)elem2;
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128 switch (mswindows_sort_method)
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129 {
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130 case MSWINDOWS_SORT_BY_NAME:
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131 status = strcmp(e1->cFileName, e2->cFileName);
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132 break;
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133 case MSWINDOWS_SORT_BY_NAME_NOCASE:
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134 status = _stricmp(e1->cFileName, e2->cFileName);
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135 break;
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136 case MSWINDOWS_SORT_BY_MOD_DATE:
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137 status = CMPDWORDS(e1->ftLastWriteTime.dwHighDateTime,
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138 e1->ftLastWriteTime.dwLowDateTime,
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139 e2->ftLastWriteTime.dwHighDateTime,
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140 e2->ftLastWriteTime.dwLowDateTime);
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141 break;
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142 case MSWINDOWS_SORT_BY_SIZE:
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143 status = CMPDWORDS(e1->nFileSizeHigh, e1->nFileSizeLow,
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144 e2->nFileSizeHigh, e2->nFileSizeLow);
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145 break;
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146 default:
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147 status = 0;
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148 break;
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149 }
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150 if (mswindows_reverse_sort)
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151 {
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152 status = -status;
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153 }
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154 return (status);
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155 }
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156
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157
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158 static void
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159 mswindows_sort_files (WIN32_FIND_DATA **files, int nfiles,
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160 enum mswindows_sortby sort_by, int reverse)
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161 {
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162 mswindows_sort_method = sort_by;
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163 mswindows_reverse_sort = reverse;
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164 qsort(files, nfiles, sizeof(WIN32_FIND_DATA *), mswindows_ls_sort_fcn);
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165 }
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166
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167
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168 static WIN32_FIND_DATA *
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169 mswindows_get_files (char *dirfile, int nowild, Lisp_Object pattern,
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170 int hide_dot, int hide_system, int *nfiles)
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171 {
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172 WIN32_FIND_DATA *files;
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173 int array_size;
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174 struct re_pattern_buffer *bufp = NULL;
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175 int findex, len;
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176 char win32pattern[MAXNAMLEN+3];
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177 HANDLE fh;
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178
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179 /*
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180 * Much of the following code and comments were taken from dired.c.
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181 * Yes, this is something of a waste, but we want speed, speed, SPEED.
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182 */
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183 files = NULL;
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184 array_size = *nfiles = 0;
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185 while (1)
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186 {
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187 if (!NILP(pattern))
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188 {
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189 /* PATTERN might be a flawed regular expression. Rather than
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190 catching and signalling our own errors, we just call
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191 compile_pattern to do the work for us. */
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192 bufp = compile_pattern (pattern, 0, 0, 0, ERROR_ME);
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193 }
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194 /* Now *bufp is the compiled form of PATTERN; don't call anything
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195 which might compile a new regexp until we're done with the loop! */
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196
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197 /* Initialize file info array */
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198 array_size = 100; /* initial size */
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199 files = xmalloc(array_size * sizeof (WIN32_FIND_DATA));
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200
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201 /* for Win32, we need to insure that the pathname ends with "\*". */
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202 strcpy (win32pattern, dirfile);
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203 if (!nowild)
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204 {
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205 len = strlen (win32pattern) - 1;
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206 if (!IS_DIRECTORY_SEP (win32pattern[len]))
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207 strcat (win32pattern, "\\");
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208 strcat (win32pattern, "*");
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209 }
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210
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211 /*
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212 * Here, we use FindFirstFile()/FindNextFile() instead of opendir(),
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213 * stat(), & friends, because stat() is VERY expensive in terms of
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214 * time. Hence, we take the time to write complicated Win32-specific
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215 * code, instead of simple Unix-style stuff.
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216 */
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217 findex = 0;
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218 fh = INVALID_HANDLE_VALUE;
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219
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220 while (1)
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221 {
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222 int len;
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223 char *filename;
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224 int result;
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225
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226 if (fh == INVALID_HANDLE_VALUE)
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227 {
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228 fh = FindFirstFile(win32pattern, &files[findex]);
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229 if (fh == INVALID_HANDLE_VALUE)
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230 {
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231 report_file_error ("Opening directory",
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232 list1(build_string(dirfile)));
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233 }
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234 }
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235 else
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236 {
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237 if (!FindNextFile(fh, &files[findex]))
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238 {
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239 if (GetLastError() == ERROR_NO_MORE_FILES)
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240 {
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241 break;
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242 }
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243 FindClose(fh);
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244 report_file_error ("Reading directory",
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245 list1(build_string(dirfile)));
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246 }
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247 }
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248
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249 filename = files[findex].cFileName;
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250 if (!NILP(Vmswindows_downcase_file_names))
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251 {
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252 strlwr(filename);
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253 }
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254 len = strlen(filename);
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255 result = (NILP(pattern)
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256 || (0 <= re_search (bufp, filename,
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257 len, 0, len, 0)));
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258 if (result)
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259 {
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260 if ( ! (filename[0] == '.' &&
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261 ((hide_system && (filename[1] == '\0' ||
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262 (filename[1] == '.' &&
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263 filename[2] == '\0'))) ||
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264 hide_dot)))
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265 {
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266 if (++findex >= array_size)
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267 {
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268 array_size = findex * 2;
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269 files = xrealloc(files,
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270 array_size * sizeof(WIN32_FIND_DATA));
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271 }
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272 }
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273 }
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274 }
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275 if (fh != INVALID_HANDLE_VALUE)
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276 {
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277 FindClose (fh);
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278 }
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279 *nfiles = findex;
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280 break;
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281 }
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282 return (files);
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283 }
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284
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285
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286 static void
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287 mswindows_format_file (WIN32_FIND_DATA *file, char *buf, int display_size,
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288 int add_newline)
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289 {
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290 char *cptr;
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291 int len;
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292 Lisp_Object luser;
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293 double file_size;
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294
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295 len = strlen(file->cFileName);
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296 file_size =
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297 file->nFileSizeHigh * (double)UINT_MAX + file->nFileSizeLow;
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298 cptr = buf;
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299 #if INDENT_LISTING
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300 *cptr++ = ' ';
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301 *cptr++ = ' ';
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302 #endif
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303 if (display_size)
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304 {
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305 sprintf(cptr, "%6d ", (int)((file_size + 1023.) / 1024.));
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306 cptr += 7;
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307 }
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308 if (file->dwFileAttributes & FILE_ATTRIBUTE_DIRECTORY)
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309 {
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310 *cptr++ = 'd';
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311 } else {
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312 *cptr++ = '-';
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313 }
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314 cptr[0] = cptr[3] = cptr[6] = 'r';
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315 if (file->dwFileAttributes & FILE_ATTRIBUTE_READONLY)
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316 {
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317 cptr[1] = cptr[4] = cptr[7] = '-';
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318 } else {
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319 cptr[1] = cptr[4] = cptr[7] = 'w';
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320 }
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321 if ((file->dwFileAttributes & FILE_ATTRIBUTE_DIRECTORY) ||
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322 len > 4 &&
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323 (_stricmp(&file->cFileName[len - 4], ".exe") == 0
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324 || _stricmp(&file->cFileName[len - 4], ".com") == 0
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325 || _stricmp(&file->cFileName[len - 4], ".bat") == 0
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326 #if 0
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327 || _stricmp(&file->cFileName[len - 4], ".pif") == 0
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328 #endif
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329 ))
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330 {
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331 cptr[2] = cptr[5] = cptr[8] = 'x';
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332 } else {
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333 cptr[2] = cptr[5] = cptr[8] = '-';
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334 }
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335 cptr += 9;
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336 if (file->dwFileAttributes & FILE_ATTRIBUTE_DIRECTORY)
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337 {
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338 strcpy(cptr, " 2 ");
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339 } else {
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340 strcpy(cptr, " 1 ");
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341 }
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342 cptr += 5;
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343 luser = Fuser_login_name(Qnil);
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344 if (!STRINGP(luser))
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345 {
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346 sprintf(cptr, "%-9d", 0);
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347 } else {
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348 char *str;
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349
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350 str = XSTRING_DATA(luser);
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351 sprintf(cptr, "%-8s ", str);
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352 }
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353 while (*cptr)
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354 {
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355 ++cptr;
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356 }
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357 sprintf(cptr, "%-8d ", getgid());
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358 cptr += 9;
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359 if (file_size > 99999999.0)
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360 {
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361 file_size = (file_size + 1023.0) / 1024.;
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362 if (file_size > 999999.0)
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363 {
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364 sprintf(cptr, "%6.0fMB ", (file_size + 1023.0) / 1024.);
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365 } else {
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366 sprintf(cptr, "%6.0fKB ", file_size);
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367 }
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368 } else {
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369 sprintf(cptr, "%8.0f ", file_size);
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370 }
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371 while (*cptr)
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372 {
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373 ++cptr;
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374 }
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375 {
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376 time_t t, now;
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377 char *ctimebuf;
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378 extern char *sys_ctime(const time_t *t); /* in nt.c */
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379
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380 if (
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381 #if 0
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382 /*
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383 * This doesn't work.
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384 * This code should be correct ...
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385 */
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386 FileTimeToLocalFileTime(&file->ftLastWriteTime, &localtime) &&
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387 ((t = convert_time(localtime)) != 0) &&
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388 #else
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389 /*
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390 * But this code "works" ...
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391 */
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392 ((t = convert_time(file->ftLastWriteTime)) != 0) &&
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393 #endif
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394 ((ctimebuf = sys_ctime(&t)) != NULL))
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395 {
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396 memcpy(cptr, &ctimebuf[4], 7);
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397 now = time(NULL);
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398 if (now - t > (365. / 2.0) * 86400.)
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|
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399 {
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400 /* more than 6 months */
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401 cptr[7] = ' ';
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402 memcpy(&cptr[8], &ctimebuf[20], 4);
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403 } else {
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404 /* less than 6 months */
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405 memcpy(&cptr[7], &ctimebuf[11], 5);
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406 }
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407 cptr += 12;
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408 *cptr++ = ' ';
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409 }
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410 }
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|
411 if (add_newline)
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412 {
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|
|
413 sprintf(cptr, "%s\n", file->cFileName);
|
|
|
414 }
|
|
|
415 else
|
|
|
416 {
|
|
|
417 strcpy(cptr, file->cFileName);
|
|
|
418 }
|
|
|
419 }
|
|
|
420
|
|
|
421
|
|
|
422 DEFUN ("mswindows-insert-directory", Fmswindows_insert_directory, 2, 4, 0, /*
|
|
|
423 Insert directory listing for FILE, formatted according to SWITCHES.
|
|
|
424 Leaves point after the inserted text.
|
|
|
425 SWITCHES may be a string of options, or a list of strings.
|
|
|
426 Optional third arg WILDCARD means treat FILE as shell wildcard.
|
|
|
427 Optional fourth arg FULL-DIRECTORY-P means file is a directory and
|
|
|
428 switches do not contain `d', so that a full listing is expected.
|
|
|
429 */
|
|
|
430 (file, switches, wildcard, full_directory_p))
|
|
|
431 {
|
|
|
432 Lisp_Object result, handler, wildpat, fns, basename;
|
|
|
433 char *filename;
|
|
|
434 char *switchstr;
|
|
|
435 int len, nfiles, i;
|
|
|
436 int hide_system, hide_dot, reverse, display_size;
|
|
|
437 WIN32_FIND_DATA *files, **sorted_files;
|
|
|
438 enum mswindows_sortby sort_by;
|
|
|
439 char fmtbuf[MAXNAMLEN+100]; /* larger than necessary */
|
|
|
440 struct gcpro gcpro1, gcpro2, gcpro3, gcpro4, gcpro5;
|
|
|
441
|
|
|
442 result = Qnil;
|
|
|
443 wildpat = Qnil;
|
|
|
444 fns = Qnil;
|
|
|
445 basename = Qnil;
|
|
|
446 GCPRO5(result, file, wildpat, fns, basename);
|
|
|
447 sorted_files = NULL;
|
|
|
448 switchstr = NULL;
|
|
|
449 hide_system = 1;
|
|
|
450 hide_dot = 1;
|
|
|
451 display_size = 0;
|
|
|
452 reverse = 0;
|
|
282
|
453 sort_by = (mswindows_ls_sort_case_insensitive
|
|
|
454 ? MSWINDOWS_SORT_BY_NAME_NOCASE
|
|
|
455 : MSWINDOWS_SORT_BY_NAME);
|
|
263
|
456 nfiles = 0;
|
|
|
457 while (1)
|
|
|
458 {
|
|
|
459 handler = Ffind_file_name_handler (file, Qmswindows_insert_directory);
|
|
|
460 if (!NILP(handler))
|
|
|
461 {
|
|
|
462 result = call5(handler, Qmswindows_insert_directory, file, switches,
|
|
|
463 wildcard, full_directory_p);
|
|
|
464 break;
|
|
|
465 }
|
|
|
466 CHECK_STRING (file);
|
|
|
467 if (!NILP(switches))
|
|
|
468 {
|
|
|
469 char *cptr;
|
|
|
470
|
|
|
471 CHECK_STRING (switches);
|
|
|
472 switchstr = XSTRING_DATA(switches);
|
|
|
473 for (cptr = switchstr; *cptr; ++cptr)
|
|
|
474 {
|
|
|
475 switch (*cptr)
|
|
|
476 {
|
|
|
477 case 'A':
|
|
|
478 hide_dot = 0;
|
|
|
479 break;
|
|
|
480 case 'a':
|
|
|
481 hide_system = 0;
|
|
|
482 hide_dot = 0;
|
|
|
483 break;
|
|
|
484 case 'r':
|
|
|
485 reverse = 1;
|
|
|
486 break;
|
|
|
487 case 's':
|
|
|
488 display_size = 1;
|
|
|
489 break;
|
|
|
490 case 'S':
|
|
|
491 sort_by = MSWINDOWS_SORT_BY_SIZE;
|
|
|
492 break;
|
|
|
493 case 't':
|
|
|
494 sort_by = MSWINDOWS_SORT_BY_MOD_DATE;
|
|
|
495 break;
|
|
|
496 }
|
|
|
497 }
|
|
|
498 }
|
|
|
499
|
|
|
500 /*
|
|
|
501 * Sometimes we get ".../foo* /" as FILE (without the space).
|
|
|
502 * While the shell and `ls' don't mind, we certainly do,
|
|
|
503 * because it makes us think there is no wildcard, only a
|
|
|
504 * directory name.
|
|
|
505 */
|
|
|
506 if (!NILP(Fstring_match(build_string("[[?*]"), file, Qnil, Qnil)))
|
|
|
507 {
|
|
|
508 wildcard = Qt;
|
|
|
509 filename = XSTRING_DATA(file);
|
|
|
510 len = strlen(filename);
|
|
|
511 if (len > 0 && (filename[len - 1] == '\\' ||
|
|
|
512 filename[len - 1] == '/'))
|
|
|
513 {
|
|
|
514 filename[len - 1] = '\0';
|
|
|
515 }
|
|
|
516 file = build_string(filename);
|
|
|
517 }
|
|
|
518 if (!NILP(wildcard))
|
|
|
519 {
|
|
|
520 Lisp_Object newfile;
|
|
|
521
|
|
|
522 basename = Ffile_name_nondirectory(file);
|
|
|
523 fns = intern("wildcard-to-regexp");
|
|
|
524 wildpat = call1(fns, basename);
|
|
|
525 newfile = Ffile_name_directory(file);
|
|
|
526 if (NILP(newfile))
|
|
|
527 {
|
|
|
528 /* Ffile_name_directory() can GC */
|
|
|
529 newfile = Ffile_name_directory(Fexpand_file_name(file, Qnil));
|
|
|
530 }
|
|
|
531 file = newfile;
|
|
|
532 }
|
|
|
533 if (!NILP(wildcard) || !NILP(full_directory_p))
|
|
|
534 {
|
|
|
535 CHECK_STRING(file);
|
|
|
536 if (!NILP(wildpat))
|
|
|
537 {
|
|
|
538 CHECK_STRING(wildpat);
|
|
|
539 }
|
|
|
540
|
|
|
541 files = mswindows_get_files(XSTRING_DATA(file), FALSE, wildpat,
|
|
|
542 hide_dot, hide_system, &nfiles);
|
|
|
543 if (files == NULL || nfiles == 0)
|
|
|
544 {
|
|
|
545 break;
|
|
|
546 }
|
|
|
547 }
|
|
|
548 else
|
|
|
549 {
|
|
|
550 files = mswindows_get_files(XSTRING_DATA(file), TRUE, wildpat,
|
|
|
551 hide_dot, hide_system, &nfiles);
|
|
|
552 }
|
|
|
553 if ((sorted_files = xmalloc(nfiles * sizeof(WIN32_FIND_DATA *)))
|
|
|
554 == NULL)
|
|
|
555 {
|
|
|
556 break;
|
|
|
557 }
|
|
|
558 for (i = 0; i < nfiles; ++i)
|
|
|
559 {
|
|
|
560 sorted_files[i] = &files[i];
|
|
|
561 }
|
|
|
562 if (nfiles > 1)
|
|
|
563 {
|
|
|
564 mswindows_sort_files(sorted_files, nfiles, sort_by, reverse);
|
|
|
565 }
|
|
|
566 if (!NILP(wildcard) || !NILP(full_directory_p))
|
|
|
567 {
|
|
|
568 /*
|
|
|
569 * By using doubles, we can handle files up to 2^53 bytes in
|
|
|
570 * size (IEEE doubles have 53 bits of resolution). However,
|
|
|
571 * as we divide by 1024 (or 2^10), the total size is
|
|
|
572 * accurate up to 2^(53+10) --> 2^63 bytes.
|
|
|
573 *
|
|
|
574 * Hopefully, we won't have to handle these file sizes anytime
|
|
|
575 * soon.
|
|
|
576 */
|
|
|
577 double total_size, file_size, block_size;
|
|
|
578
|
|
282
|
579 if ((block_size = mswindows_ls_round_file_size) <= 0)
|
|
263
|
580 {
|
|
|
581 block_size = 0;
|
|
|
582 }
|
|
|
583 total_size = 0;
|
|
|
584 for (i = 0; i < nfiles; ++i)
|
|
|
585 {
|
|
|
586 file_size =
|
|
|
587 sorted_files[i]->nFileSizeHigh * (double)UINT_MAX +
|
|
|
588 sorted_files[i]->nFileSizeLow;
|
|
|
589 if (block_size > 0)
|
|
|
590 {
|
|
|
591 /*
|
|
|
592 * Round file_size up to the next nearest block size.
|
|
|
593 */
|
|
|
594 file_size =
|
|
|
595 floor((file_size + block_size - 1) / block_size)
|
|
|
596 * block_size;
|
|
|
597 }
|
|
|
598 /* Here, we round to the nearest 1K */
|
|
|
599 total_size += floor((file_size + 512.) / 1024.);
|
|
|
600 }
|
|
|
601 sprintf(fmtbuf,
|
|
|
602 #if INDENT_LISTING
|
|
|
603 /* ANSI C compilers auto-concatenate adjacent strings */
|
|
|
604 " "
|
|
|
605 #endif
|
|
|
606 "total %.0f\n", total_size);
|
|
|
607 buffer_insert1(current_buffer, build_string(fmtbuf));
|
|
|
608 }
|
|
|
609 for (i = 0; i < nfiles; ++i)
|
|
|
610 {
|
|
|
611 mswindows_format_file(sorted_files[i], fmtbuf, display_size, TRUE);
|
|
|
612 buffer_insert1(current_buffer, build_string(fmtbuf));
|
|
|
613 }
|
|
|
614 break;
|
|
|
615 }
|
|
|
616 if (sorted_files)
|
|
|
617 {
|
|
|
618 xfree(sorted_files);
|
|
|
619 }
|
|
|
620 UNGCPRO;
|
|
|
621 return (result);
|
|
|
622 }
|
|
|
623
|
|
|
624
|
|
|
625
|
|
|
626 /************************************************************************/
|
|
|
627 /* initialization */
|
|
|
628 /************************************************************************/
|
|
|
629
|
|
|
630 void
|
|
|
631 syms_of_dired_mswindows (void)
|
|
|
632 {
|
|
|
633 defsymbol (&Qmswindows_insert_directory, "mswindows-insert-directory");
|
|
|
634
|
|
|
635 DEFSUBR (Fmswindows_insert_directory);
|
|
|
636 }
|
|
|
637
|
|
|
638
|
|
|
639 void
|
|
|
640 vars_of_dired_mswindows (void)
|
|
|
641 {
|
|
282
|
642 DEFVAR_BOOL ("mswindows-ls-sort-case-insensitive", &mswindows_ls_sort_case_insensitive, /*
|
|
263
|
643 *Non-nil means filenames are sorted in a case-insensitive fashion.
|
|
|
644 Nil means filenames are sorted in a case-sensitive fashion, just like Unix.
|
|
|
645 */ );
|
|
282
|
646 mswindows_ls_sort_case_insensitive = 1;
|
|
263
|
647
|
|
282
|
648 DEFVAR_INT ("mswindows-ls-round-file-size", &mswindows_ls_round_file_size /*
|
|
263
|
649 *If non-zero, file sizes are rounded in terms of this block size when
|
|
|
650 the file totals are being calculated. This is useful for getting a more
|
|
|
651 accurate estimate of allocated disk space. Note that this only affects
|
|
|
652 the total size calculation; the individual displayed file sizes are not
|
|
|
653 changed. This block size should also be a power of 2 (but this is not
|
|
|
654 enforced), as filesystem block (cluster) sizes are typically powers-of-2.
|
|
|
655 */ );
|
|
|
656 /*
|
|
|
657 * Here, we choose 4096 because it's the cluster size for both FAT32
|
|
|
658 * and NTFS (?). This is probably much too small for people using
|
|
|
659 * plain FAT, but, hopefully, plain FAT will go away someday.
|
|
|
660 *
|
|
|
661 * We should allow something like a alist here, to make the size
|
|
|
662 * dependent on the drive letter, etc..
|
|
|
663 */
|
|
282
|
664 mswindows_ls_round_file_size = 4096;
|
|
263
|
665 }
|
