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1 /*******************************************************************************
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2
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3 copyright: Copyright (c) 2004 Kris Bell. All rights reserved
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4
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5 license: BSD style: $(LICENSE)
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6
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7 version: Initial release: March 2004
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8
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9 author: Kris, FreeEagle
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10
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11 *******************************************************************************/
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12
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13 module tango.io.FileRoots;
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14
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15 private import tango.sys.Common;
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16
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17
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18 version (Win32)
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19 {
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20 private import Text = tango.text.Util;
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21 private extern (Windows) DWORD GetLogicalDriveStringsA (DWORD, LPTSTR);
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22 }
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23
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24 version (Posix)
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25 {
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26 private import tango.io.FileConduit;
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27 private import Integer = tango.text.convert.Integer;
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28 }
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29
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30 /*******************************************************************************
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31
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32 Models an OS-specific file-system. Included here are methods to
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33 list the system roots ("C:", "D:", etc)
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34
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35 *******************************************************************************/
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36
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37 struct FileRoots
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38 {
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39 version (Win32)
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40 {
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41 /***************************************************************
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42
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43 List the set of root devices (C:, D: etc)
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44
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45 ***************************************************************/
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46
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47 static char[][] list ()
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48 {
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49 int len;
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50 char[] str;
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51 char[][] roots;
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52
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53 // acquire drive strings
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54 len = GetLogicalDriveStringsA (0, null);
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55 if (len)
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56 {
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57 str = new char [len];
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58 GetLogicalDriveStringsA (len, str.ptr);
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59
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60 // split roots into seperate strings
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61 roots = Text.delimit (str [0 .. $-1], "\0");
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62 }
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63 return roots;
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64 }
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65 }
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66
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67
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68 version (Posix)
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69 {
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70 /***************************************************************
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71
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72 List the set of root devices.
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73
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74 ***************************************************************/
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75
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76 static char[][] list ()
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77 {
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78 version(darwin)
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79 {
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80 assert(0);
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81 return null;
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82 }
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83 else
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84 {
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85 char[] path = "";
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86 char[][] list;
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87 int spaces;
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88
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89 auto fc = new FileConduit("/etc/mtab");
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90 scope (exit)
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91 fc.close;
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92
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93 auto content = new char[cast(int) fc.length];
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94 fc.input.read (content);
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95
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96 for(int i = 0; i < content.length; i++)
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97 {
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98 if(content[i] == ' ') spaces++;
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99 else if(content[i] == '\n')
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100 {
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101 spaces = 0;
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102 list ~= path;
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103 path = "";
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104 }
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105 else if(spaces == 1)
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106 {
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107 if(content[i] == '\\')
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108 {
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109 path ~= Integer.parse(content[++i..i+3], 8u);
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110 i += 2;
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111 }
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112 else path ~= content[i];
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113 }
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114 }
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115
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116 return list;
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117 }
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118 }
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119 }
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120 }
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121
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