1 | // |
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2 | // File_WIN32.cpp |
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3 | // |
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4 | // $Id: //poco/1.3/Foundation/src/File_WIN32.cpp#10 $ |
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5 | // |
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6 | // Library: Foundation |
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7 | // Package: Filesystem |
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8 | // Module: File |
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9 | // |
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10 | // Copyright (c) 2004-2006, Applied Informatics Software Engineering GmbH. |
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11 | // and Contributors. |
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12 | // |
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13 | // Permission is hereby granted, free of charge, to any person or organization |
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14 | // obtaining a copy of the software and accompanying documentation covered by |
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15 | // this license (the "Software") to use, reproduce, display, distribute, |
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16 | // execute, and transmit the Software, and to prepare derivative works of the |
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17 | // Software, and to permit third-parties to whom the Software is furnished to |
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18 | // do so, all subject to the following: |
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19 | // |
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20 | // The copyright notices in the Software and this entire statement, including |
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21 | // the above license grant, this restriction and the following disclaimer, |
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22 | // must be included in all copies of the Software, in whole or in part, and |
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23 | // all derivative works of the Software, unless such copies or derivative |
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24 | // works are solely in the form of machine-executable object code generated by |
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25 | // a source language processor. |
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26 | // |
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27 | // THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR |
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28 | // IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, |
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29 | // FITNESS FOR A PARTICULAR PURPOSE, TITLE AND NON-INFRINGEMENT. IN NO EVENT |
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30 | // SHALL THE COPYRIGHT HOLDERS OR ANYONE DISTRIBUTING THE SOFTWARE BE LIABLE |
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31 | // FOR ANY DAMAGES OR OTHER LIABILITY, WHETHER IN CONTRACT, TORT OR OTHERWISE, |
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32 | // ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER |
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33 | // DEALINGS IN THE SOFTWARE. |
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34 | // |
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35 | |
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36 | |
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37 | #include <Poco/File_WIN32.h> |
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38 | #include <Poco/Exception.h> |
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39 | #include <Poco/String.h> |
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40 | #include <Poco/UnWindows.h> |
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41 | |
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42 | |
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43 | namespace Poco { |
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44 | |
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45 | |
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46 | class FileHandle |
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47 | { |
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48 | public: |
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49 | FileHandle(const std::string& path, DWORD access, DWORD share, DWORD disp) |
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50 | { |
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51 | _h = CreateFileA(path.c_str(), access, share, 0, disp, 0, 0); |
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52 | if (_h == INVALID_HANDLE_VALUE) |
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53 | { |
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54 | FileImpl::handleLastErrorImpl(path); |
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55 | } |
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56 | } |
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57 | |
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58 | ~FileHandle() |
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59 | { |
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60 | if (_h != INVALID_HANDLE_VALUE) CloseHandle(_h); |
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61 | } |
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62 | |
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63 | HANDLE get() const |
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64 | { |
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65 | return _h; |
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66 | } |
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67 | |
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68 | private: |
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69 | HANDLE _h; |
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70 | }; |
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71 | |
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72 | |
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73 | FileImpl::FileImpl() |
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74 | { |
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75 | } |
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76 | |
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77 | |
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78 | FileImpl::FileImpl(const std::string& path): _path(path) |
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79 | { |
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80 | std::string::size_type n = _path.size(); |
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81 | if (n > 1 && (_path[n - 1] == '\\' || _path[n - 1] == '/') && !((n == 3 && _path[1]==':'))) |
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82 | { |
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83 | _path.resize(n - 1); |
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84 | } |
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85 | } |
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86 | |
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87 | |
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88 | FileImpl::~FileImpl() |
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89 | { |
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90 | } |
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91 | |
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92 | |
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93 | void FileImpl::swapImpl(FileImpl& file) |
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94 | { |
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95 | std::swap(_path, file._path); |
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96 | } |
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97 | |
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98 | |
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99 | void FileImpl::setPathImpl(const std::string& path) |
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100 | { |
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101 | _path = path; |
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102 | std::string::size_type n = _path.size(); |
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103 | if (n > 1 && (_path[n - 1] == '\\' || _path[n - 1] == '/') && !((n == 3 && _path[1]==':'))) |
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104 | { |
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105 | _path.resize(n - 1); |
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106 | } |
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107 | } |
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108 | |
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109 | |
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110 | bool FileImpl::existsImpl() const |
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111 | { |
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112 | poco_assert (!_path.empty()); |
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113 | |
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114 | DWORD attr = GetFileAttributes(_path.c_str()); |
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115 | if (attr == 0xFFFFFFFF) |
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116 | { |
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117 | switch (GetLastError()) |
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118 | { |
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119 | case ERROR_FILE_NOT_FOUND: |
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120 | case ERROR_PATH_NOT_FOUND: |
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121 | case ERROR_NOT_READY: |
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122 | case ERROR_INVALID_DRIVE: |
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123 | return false; |
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124 | default: |
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125 | handleLastErrorImpl(_path); |
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126 | } |
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127 | } |
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128 | return true; |
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129 | } |
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130 | |
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131 | |
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132 | bool FileImpl::canReadImpl() const |
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133 | { |
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134 | poco_assert (!_path.empty()); |
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135 | |
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136 | DWORD attr = GetFileAttributes(_path.c_str()); |
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137 | if (attr == 0xFFFFFFFF) |
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138 | { |
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139 | switch (GetLastError()) |
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140 | { |
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141 | case ERROR_ACCESS_DENIED: |
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142 | return false; |
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143 | default: |
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144 | handleLastErrorImpl(_path); |
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145 | } |
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146 | } |
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147 | return true; |
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148 | } |
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149 | |
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150 | |
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151 | bool FileImpl::canWriteImpl() const |
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152 | { |
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153 | poco_assert (!_path.empty()); |
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154 | |
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155 | DWORD attr = GetFileAttributes(_path.c_str()); |
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156 | if (attr == 0xFFFFFFFF) |
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157 | handleLastErrorImpl(_path); |
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158 | return (attr & FILE_ATTRIBUTE_READONLY) == 0; |
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159 | } |
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160 | |
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161 | |
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162 | bool FileImpl::canExecuteImpl() const |
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163 | { |
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164 | Path p(_path); |
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165 | return icompare(p.getExtension(), "exe") == 0; |
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166 | } |
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167 | |
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168 | |
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169 | bool FileImpl::isFileImpl() const |
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170 | { |
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171 | return !isDirectoryImpl() && !isDeviceImpl(); |
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172 | } |
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173 | |
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174 | |
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175 | bool FileImpl::isDirectoryImpl() const |
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176 | { |
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177 | poco_assert (!_path.empty()); |
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178 | |
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179 | DWORD attr = GetFileAttributes(_path.c_str()); |
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180 | if (attr == 0xFFFFFFFF) |
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181 | handleLastErrorImpl(_path); |
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182 | return (attr & FILE_ATTRIBUTE_DIRECTORY) != 0; |
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183 | } |
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184 | |
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185 | |
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186 | bool FileImpl::isLinkImpl() const |
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187 | { |
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188 | return false; |
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189 | } |
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190 | |
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191 | |
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192 | bool FileImpl::isDeviceImpl() const |
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193 | { |
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194 | poco_assert (!_path.empty()); |
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195 | |
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196 | FileHandle fh(_path, GENERIC_READ, 0, OPEN_EXISTING); |
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197 | DWORD type = GetFileType(fh.get()); |
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198 | if (type == FILE_TYPE_CHAR) |
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199 | return true; |
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200 | else if (type == FILE_TYPE_UNKNOWN && GetLastError() != NO_ERROR) |
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201 | handleLastErrorImpl(_path); |
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202 | return false; |
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203 | } |
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204 | |
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205 | |
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206 | bool FileImpl::isHiddenImpl() const |
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207 | { |
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208 | poco_assert (!_path.empty()); |
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209 | |
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210 | DWORD attr = GetFileAttributes(_path.c_str()); |
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211 | if (attr == 0xFFFFFFFF) |
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212 | handleLastErrorImpl(_path); |
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213 | return (attr & FILE_ATTRIBUTE_HIDDEN) != 0; |
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214 | } |
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215 | |
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216 | |
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217 | Timestamp FileImpl::createdImpl() const |
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218 | { |
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219 | poco_assert (!_path.empty()); |
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220 | |
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221 | WIN32_FILE_ATTRIBUTE_DATA fad; |
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222 | if (GetFileAttributesEx(_path.c_str(), GetFileExInfoStandard, &fad) == 0) |
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223 | handleLastErrorImpl(_path); |
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224 | return Timestamp::fromFileTimeNP(fad.ftCreationTime.dwLowDateTime, fad.ftCreationTime.dwHighDateTime); |
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225 | } |
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226 | |
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227 | |
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228 | Timestamp FileImpl::getLastModifiedImpl() const |
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229 | { |
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230 | poco_assert (!_path.empty()); |
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231 | |
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232 | WIN32_FILE_ATTRIBUTE_DATA fad; |
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233 | if (GetFileAttributesEx(_path.c_str(), GetFileExInfoStandard, &fad) == 0) |
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234 | handleLastErrorImpl(_path); |
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235 | return Timestamp::fromFileTimeNP(fad.ftLastWriteTime.dwLowDateTime, fad.ftLastWriteTime.dwHighDateTime); |
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236 | } |
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237 | |
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238 | |
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239 | void FileImpl::setLastModifiedImpl(const Timestamp& ts) |
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240 | { |
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241 | poco_assert (!_path.empty()); |
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242 | |
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243 | UInt32 low; |
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244 | UInt32 high; |
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245 | ts.toFileTimeNP(low, high); |
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246 | FILETIME ft; |
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247 | ft.dwLowDateTime = low; |
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248 | ft.dwHighDateTime = high; |
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249 | FileHandle fh(_path, FILE_ALL_ACCESS, FILE_SHARE_READ | FILE_SHARE_WRITE, OPEN_EXISTING); |
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250 | if (SetFileTime(fh.get(), 0, &ft, &ft) == 0) |
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251 | handleLastErrorImpl(_path); |
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252 | } |
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253 | |
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254 | |
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255 | FileImpl::FileSizeImpl FileImpl::getSizeImpl() const |
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256 | { |
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257 | poco_assert (!_path.empty()); |
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258 | |
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259 | WIN32_FILE_ATTRIBUTE_DATA fad; |
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260 | if (GetFileAttributesEx(_path.c_str(), GetFileExInfoStandard, &fad) == 0) |
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261 | handleLastErrorImpl(_path); |
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262 | LARGE_INTEGER li; |
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263 | li.LowPart = fad.nFileSizeLow; |
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264 | li.HighPart = fad.nFileSizeHigh; |
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265 | return li.QuadPart; |
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266 | } |
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267 | |
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268 | |
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269 | void FileImpl::setSizeImpl(FileSizeImpl size) |
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270 | { |
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271 | poco_assert (!_path.empty()); |
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272 | |
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273 | FileHandle fh(_path, GENERIC_WRITE, FILE_SHARE_READ | FILE_SHARE_WRITE, OPEN_EXISTING); |
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274 | LARGE_INTEGER li; |
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275 | li.QuadPart = size; |
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276 | if (SetFilePointer(fh.get(), li.LowPart, &li.HighPart, FILE_BEGIN) == -1) |
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277 | handleLastErrorImpl(_path); |
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278 | if (SetEndOfFile(fh.get()) == 0) |
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279 | handleLastErrorImpl(_path); |
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280 | } |
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281 | |
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282 | |
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283 | void FileImpl::setWriteableImpl(bool flag) |
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284 | { |
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285 | poco_assert (!_path.empty()); |
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286 | |
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287 | DWORD attr = GetFileAttributes(_path.c_str()); |
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288 | if (attr == -1) |
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289 | handleLastErrorImpl(_path); |
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290 | if (flag) |
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291 | attr &= ~FILE_ATTRIBUTE_READONLY; |
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292 | else |
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293 | attr |= FILE_ATTRIBUTE_READONLY; |
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294 | if (SetFileAttributes(_path.c_str(), attr) == 0) |
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295 | handleLastErrorImpl(_path); |
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296 | } |
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297 | |
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298 | |
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299 | void FileImpl::setExecutableImpl(bool flag) |
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300 | { |
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301 | // not supported |
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302 | } |
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303 | |
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304 | |
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305 | void FileImpl::copyToImpl(const std::string& path) const |
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306 | { |
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307 | poco_assert (!_path.empty()); |
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308 | |
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309 | if (CopyFileA(_path.c_str(), path.c_str(), FALSE) != 0) |
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310 | { |
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311 | FileImpl copy(path); |
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312 | copy.setWriteableImpl(true); |
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313 | } |
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314 | else handleLastErrorImpl(_path); |
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315 | } |
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316 | |
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317 | |
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318 | void FileImpl::renameToImpl(const std::string& path) |
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319 | { |
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320 | poco_assert (!_path.empty()); |
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321 | |
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322 | if (MoveFileA(_path.c_str(), path.c_str()) == 0) |
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323 | handleLastErrorImpl(_path); |
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324 | } |
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325 | |
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326 | |
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327 | void FileImpl::removeImpl() |
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328 | { |
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329 | poco_assert (!_path.empty()); |
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330 | |
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331 | if (isDirectoryImpl()) |
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332 | { |
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333 | if (RemoveDirectoryA(_path.c_str()) == 0) |
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334 | handleLastErrorImpl(_path); |
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335 | } |
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336 | else |
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337 | { |
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338 | if (DeleteFileA(_path.c_str()) == 0) |
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339 | handleLastErrorImpl(_path); |
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340 | } |
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341 | } |
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342 | |
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343 | |
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344 | bool FileImpl::createFileImpl() |
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345 | { |
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346 | poco_assert (!_path.empty()); |
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347 | |
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348 | HANDLE hFile = CreateFileA(_path.c_str(), GENERIC_WRITE, 0, 0, CREATE_NEW, 0, 0); |
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349 | if (hFile != INVALID_HANDLE_VALUE) |
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350 | { |
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351 | CloseHandle(hFile); |
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352 | return true; |
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353 | } |
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354 | else if (GetLastError() == ERROR_FILE_EXISTS) |
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355 | return false; |
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356 | else |
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357 | handleLastErrorImpl(_path); |
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358 | return false; |
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359 | } |
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360 | |
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361 | |
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362 | bool FileImpl::createDirectoryImpl() |
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363 | { |
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364 | poco_assert (!_path.empty()); |
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365 | |
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366 | if (existsImpl() && isDirectoryImpl()) |
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367 | return false; |
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368 | if (CreateDirectoryA(_path.c_str(), 0) == 0) |
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369 | handleLastErrorImpl(_path); |
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370 | return true; |
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371 | } |
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372 | |
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373 | |
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374 | void FileImpl::handleLastErrorImpl(const std::string& path) |
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375 | { |
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376 | switch (GetLastError()) |
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377 | { |
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378 | case ERROR_FILE_NOT_FOUND: |
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379 | throw FileNotFoundException(path); |
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380 | case ERROR_PATH_NOT_FOUND: |
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381 | case ERROR_BAD_NETPATH: |
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382 | case ERROR_CANT_RESOLVE_FILENAME: |
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383 | case ERROR_INVALID_DRIVE: |
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384 | throw PathNotFoundException(path); |
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385 | case ERROR_ACCESS_DENIED: |
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386 | throw FileAccessDeniedException(path); |
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387 | case ERROR_ALREADY_EXISTS: |
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388 | case ERROR_FILE_EXISTS: |
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389 | throw FileExistsException(path); |
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390 | case ERROR_INVALID_NAME: |
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391 | case ERROR_DIRECTORY: |
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392 | case ERROR_FILENAME_EXCED_RANGE: |
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393 | case ERROR_BAD_PATHNAME: |
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394 | throw PathSyntaxException(path); |
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395 | case ERROR_FILE_READ_ONLY: |
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396 | throw FileReadOnlyException(path); |
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397 | case ERROR_CANNOT_MAKE: |
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398 | throw CreateFileException(path); |
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399 | case ERROR_DIR_NOT_EMPTY: |
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400 | throw FileException("directory not empty", path); |
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401 | case ERROR_WRITE_FAULT: |
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402 | throw WriteFileException(path); |
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403 | case ERROR_READ_FAULT: |
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404 | throw ReadFileException(path); |
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405 | case ERROR_SHARING_VIOLATION: |
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406 | throw FileException("sharing violation", path); |
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407 | case ERROR_LOCK_VIOLATION: |
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408 | throw FileException("lock violation", path); |
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409 | case ERROR_HANDLE_EOF: |
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410 | throw ReadFileException("EOF reached", path); |
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411 | case ERROR_HANDLE_DISK_FULL: |
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412 | case ERROR_DISK_FULL: |
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413 | throw WriteFileException("disk is full", path); |
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414 | case ERROR_NEGATIVE_SEEK: |
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415 | throw FileException("negative seek", path); |
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416 | default: |
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417 | throw FileException(path); |
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418 | } |
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419 | } |
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420 | |
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421 | |
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422 | } // namespace Poco |
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