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annotate C++/modules/Directory/Directory.cpp @ 341:83ef77841ff1

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Directory: dots are not listed by default
author David Demelier <markand@malikania.fr>
date Mon, 30 Mar 2015 09:21:01 +0200
parents 0b576ee64d45
children 8846b46fc435
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1 /*
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2 * Directory.cpp -- open and read directories
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3 *
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24085fae3162 Update licenses
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4 * Copyright (c) 2013, 2014 David Demelier <markand@malikania.fr>
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5 *
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6 * Permission to use, copy, modify, and/or distribute this software for any
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7 * purpose with or without fee is hereby granted, provided that the above
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8 * copyright notice and this permission notice appear in all copies.
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9 *
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10 * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
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11 * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
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12 * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
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13 * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
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14 * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
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15 * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
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16 * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
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17 */
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18
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19 #include <sstream>
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20 #include <stdexcept>
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21
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22 #include "Directory.h"
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23
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24 #if defined(_WIN32)
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25 # include <Windows.h>
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26 #else
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27 # include <cstring>
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28 # include <cerrno>
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29
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30 # include <sys/types.h>
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31 # include <dirent.h>
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32 #endif
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33
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34 #if defined(_WIN32)
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35
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36 namespace {
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37
198
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38 std::string systemError()
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39 {
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40 LPSTR error = nullptr;
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41 std::string errmsg = "Unknown error";
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42
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43 FormatMessageA(
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44 FORMAT_MESSAGE_ALLOCATE_BUFFER | FORMAT_MESSAGE_FROM_SYSTEM,
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45 NULL,
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46 GetLastError(),
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47 MAKELANGID(LANG_NEUTRAL, SUBLANG_DEFAULT),
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48 (LPSTR)&error, 0, NULL);
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49
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50 if (error) {
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51 errmsg = std::string(error);
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52 LocalFree(error);
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53 }
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54
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55 return errmsg;
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56 }
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57
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58 }
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59
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60 void Directory::systemLoad(const std::string &path, int flags)
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61 {
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62 std::ostringstream oss;
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63 HANDLE handle;
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64 WIN32_FIND_DATA fdata;
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65
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66 oss << path << "\\*";
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67 handle = FindFirstFile(oss.str().c_str(), &fdata);
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68
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69 if (handle == nullptr)
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70 throw std::runtime_error(systemError());
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71
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72 do {
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73 DirectoryEntry entry;
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74
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75 entry.name = fdata.cFileName;
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76 if (entry.name == "." && !(flags & Directory::Dot))
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77 continue;
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78 if (entry.name == ".." && !(flags & Directory::DotDot))
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79 continue;
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80
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81 switch (fdata.dwFileAttributes) {
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82 case FILE_ATTRIBUTE_DIRECTORY:
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83 entry.type = DirectoryEntry::Dir;
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84 break;
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85 case FILE_ATTRIBUTE_NORMAL:
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86 entry.type = DirectoryEntry::File;
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87 break;
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88 case FILE_ATTRIBUTE_REPARSE_POINT:
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89 entry.type = DirectoryEntry::Link;
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90 break;
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91 default:
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92 break;
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93 }
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94
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95 m_list.push_back(entry);
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96 } while (FindNextFile(handle, &fdata) != 0);
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97
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98 FindClose(handle);
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99 }
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100
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101 #else
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102
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103 void Directory::systemLoad(const std::string &path, int flags)
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104 {
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105 DIR *dp;
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106 struct dirent *ent;
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107
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108 if ((dp = opendir(path.c_str())) == nullptr)
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109 throw std::runtime_error(strerror(errno));
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110
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111 while ((ent = readdir(dp)) != nullptr) {
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112 Entry entry;
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113
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114 entry.name = ent->d_name;
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115 if (entry.name == "." && !(flags & Directory::Dot))
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116 continue;
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117 if (entry.name == ".." && !(flags & Directory::DotDot))
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118 continue;
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119
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120 switch (ent->d_type) {
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121 case DT_DIR:
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122 entry.type = DirectoryEntry::Dir;
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123 break;
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124 case DT_REG:
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125 entry.type = DirectoryEntry::File;
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126 break;
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127 case DT_LNK:
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128 entry.type = DirectoryEntry::Link;
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129 break;
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130 default:
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131 break;
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132 }
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133
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134 m_list.push_back(entry);
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135 }
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136
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137 closedir(dp);
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138 }
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139
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140 #endif
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141
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142 bool operator==(const DirectoryEntry &e1, const DirectoryEntry &e2)
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143 {
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144 return e1.name == e2.name && e1.type == e2.type;
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145 }
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146
199
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147 Directory::Directory()
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148 {
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149 }
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150
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151 Directory::Directory(const std::string &path, int flags)
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152 {
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153 systemLoad(path, flags);
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154 }
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155
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156 Directory::List::iterator Directory::begin()
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157 {
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158 return m_list.begin();
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159 }
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160
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161 Directory::List::const_iterator Directory::cbegin() const
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162 {
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163 return m_list.cbegin();
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164 }
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165
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166 Directory::List::iterator Directory::end()
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167 {
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168 return m_list.end();
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169 }
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170
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171 Directory::List::const_iterator Directory::cend() const
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172 {
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173 return m_list.cend();
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174 }
204
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175
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176 int Directory::count() const
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177 {
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178 return m_list.size();
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179 }
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180
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181 bool operator==(const Directory &d1, const Directory &d2)
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182 {
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183 return d1.m_list == d2.m_list;
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184 }