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