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1 /* |
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2 * Copyright (c) 2019, Oracle and/or its affiliates. All rights reserved. |
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3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
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4 * |
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5 * This code is free software; you can redistribute it and/or modify it |
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6 * under the terms of the GNU General Public License version 2 only, as |
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7 * published by the Free Software Foundation. Oracle designates this |
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8 * particular file as subject to the "Classpath" exception as provided |
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9 * by Oracle in the LICENSE file that accompanied this code. |
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10 * |
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11 * This code is distributed in the hope that it will be useful, but WITHOUT |
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12 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
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13 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License |
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14 * version 2 for more details (a copy is included in the LICENSE file that |
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15 * accompanied this code). |
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16 * |
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17 * You should have received a copy of the GNU General Public License version |
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18 * 2 along with this work; if not, write to the Free Software Foundation, |
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19 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. |
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20 * |
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21 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
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22 * or visit www.oracle.com if you need additional information or have any |
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23 * questions. |
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24 */ |
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25 |
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26 #include <memory> |
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27 #include <algorithm> |
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28 #include <shlwapi.h> |
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29 |
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30 #include "FileUtils.h" |
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31 #include "WinErrorHandling.h" |
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32 #include "Log.h" |
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33 |
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34 |
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35 // Needed by FileUtils::isDirectoryNotEmpty |
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36 #pragma comment(lib, "shlwapi") |
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37 |
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38 |
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39 namespace FileUtils { |
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40 |
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41 namespace { |
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42 |
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43 |
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44 tstring reservedFilenameChars() { |
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45 tstring buf; |
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46 for (char charCode = 0; charCode < 32; ++charCode) { |
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47 buf.append(1, charCode); |
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48 } |
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49 buf += _T("<>:\"|?*/\\"); |
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50 return buf; |
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51 } |
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52 |
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53 } // namespace |
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54 |
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55 bool isDirSeparator(const tstring::value_type c) { |
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56 return (c == '/' || c == '\\'); |
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57 } |
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58 |
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59 bool isFileExists(const tstring &filePath) { |
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60 return GetFileAttributes(filePath.c_str()) != INVALID_FILE_ATTRIBUTES; |
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61 } |
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62 |
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63 namespace { |
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64 bool isDirectoryAttrs(const DWORD attrs) { |
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65 return attrs != INVALID_FILE_ATTRIBUTES && (attrs & FILE_ATTRIBUTE_DIRECTORY) != 0; |
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66 } |
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67 } // namespace |
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68 |
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69 bool isDirectory(const tstring &filePath) { |
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70 return isDirectoryAttrs(GetFileAttributes(filePath.c_str())); |
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71 } |
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72 |
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73 bool isDirectoryNotEmpty(const tstring &dirPath) { |
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74 if (!isDirectory(dirPath)) { |
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75 return false; |
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76 } |
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77 return FALSE == PathIsDirectoryEmpty(dirPath.c_str()); |
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78 } |
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79 |
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80 tstring dirname(const tstring &path) |
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81 { |
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82 tstring::size_type pos = path.find_last_of(_T("\\/")); |
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83 if (pos != tstring::npos) { |
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84 pos = path.find_last_not_of(_T("\\/"), pos); // skip trailing slashes |
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85 } |
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86 return pos == tstring::npos ? tstring() : path.substr(0, pos + 1); |
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87 } |
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88 |
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89 tstring basename(const tstring &path) { |
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90 const tstring::size_type pos = path.find_last_of(_T("\\/")); |
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91 if (pos == tstring::npos) { |
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92 return path; |
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93 } |
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94 return path.substr(pos + 1); |
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95 } |
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96 |
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97 tstring suffix(const tstring &path) { |
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98 const tstring::size_type pos = path.rfind('.'); |
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99 if (pos == tstring::npos) { |
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100 return tstring(); |
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101 } |
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102 const tstring::size_type dirSepPos = path.find_first_of(_T("\\/"), |
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103 pos + 1); |
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104 if (dirSepPos != tstring::npos) { |
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105 return tstring(); |
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106 } |
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107 // test for '/..' and '..' cases |
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108 if (pos != 0 && path[pos - 1] == '.' |
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109 && (pos == 1 || isDirSeparator(path[pos - 2]))) { |
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110 return tstring(); |
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111 } |
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112 return path.substr(pos); |
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113 } |
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114 |
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115 tstring combinePath(const tstring& parent, const tstring& child) { |
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116 if (parent.empty()) { |
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117 return child; |
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118 } |
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119 if (child.empty()) { |
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120 return parent; |
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121 } |
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122 |
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123 tstring parentWOSlash = removeTrailingSlash(parent); |
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124 // also handle the case when child contains starting slash |
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125 bool childHasSlash = isDirSeparator(child.front()); |
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126 tstring childWOSlash = childHasSlash ? child.substr(1) : child; |
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127 |
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128 return parentWOSlash + _T("\\") + childWOSlash; |
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129 } |
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130 |
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131 tstring removeTrailingSlash(const tstring& path) { |
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132 if (path.empty()) { |
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133 return path; |
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134 } |
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135 tstring::const_reverse_iterator it = path.rbegin(); |
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136 tstring::const_reverse_iterator end = path.rend(); |
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137 |
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138 while (it != end && isDirSeparator(*it)) { |
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139 ++it; |
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140 } |
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141 return path.substr(0, end - it); |
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142 } |
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143 |
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144 tstring normalizePath(tstring v) { |
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145 std::replace(v.begin(), v.end(), '/', '\\'); |
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146 return tstrings::toLower(v); |
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147 } |
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148 |
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149 namespace { |
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150 |
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151 bool createNewFile(const tstring& path) { |
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152 HANDLE h = CreateFile(path.c_str(), GENERIC_WRITE, 0, NULL, CREATE_NEW, FILE_ATTRIBUTE_NORMAL, NULL); |
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153 // if the file exists => h == INVALID_HANDLE_VALUE & GetLastError returns ERROR_FILE_EXISTS |
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154 if (h != INVALID_HANDLE_VALUE) { |
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155 CloseHandle(h); |
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156 LOG_TRACE(tstrings::any() << "Created [" << path << "] file"); |
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157 return true; |
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158 } |
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159 return false; |
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160 } |
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161 |
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162 } // namespace |
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163 |
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164 tstring createTempFile(const tstring &prefix, const tstring &suffix, const tstring &path) |
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165 { |
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166 const tstring invalidChars = reservedFilenameChars(); |
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167 |
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168 if (prefix.find_first_of(invalidChars) != tstring::npos) { |
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169 JP_THROW(tstrings::any() << "Illegal characters in prefix=" << prefix); |
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170 } |
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171 |
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172 if (suffix.find_first_of(invalidChars) != tstring::npos) { |
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173 JP_THROW(tstrings::any() << "Illegal characters in suffix=" << suffix); |
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174 } |
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175 |
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176 int rnd = (int)GetTickCount(); |
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177 |
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178 // do no more than 100 attempts |
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179 for (int i=0; i<100; i++) { |
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180 const tstring filePath = mkpath() << path << (prefix + (tstrings::any() << (rnd + i)).tstr() + suffix); |
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181 if (createNewFile(filePath)) { |
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182 return filePath; |
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183 } |
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184 } |
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185 |
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186 // 100 attempts failed |
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187 JP_THROW(tstrings::any() << "createTempFile(" << prefix << ", " |
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188 << suffix << ", " |
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189 << path << ") failed"); |
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190 } |
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191 |
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192 tstring createTempDirectory(const tstring &prefix, const tstring &suffix, const tstring &basedir) { |
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193 const tstring filePath = createTempFile(prefix, suffix, basedir); |
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194 // delete the file and create directory with the same name |
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195 deleteFile(filePath); |
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196 createDirectory(filePath); |
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197 return filePath; |
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198 } |
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199 |
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200 tstring createUniqueFile(const tstring &prototype) { |
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201 if (createNewFile(prototype)) { |
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202 return prototype; |
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203 } |
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204 |
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205 return createTempFile(replaceSuffix(basename(prototype)), |
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206 suffix(prototype), dirname(prototype)); |
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207 } |
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208 |
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209 namespace { |
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210 |
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211 void createDir(const tstring path, LPSECURITY_ATTRIBUTES saAttr, tstring_array* createdDirs=0) { |
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212 if (CreateDirectory(path.c_str(), saAttr)) { |
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213 LOG_TRACE(tstrings::any() << "Created [" << path << "] directory"); |
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214 if (createdDirs) { |
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215 createdDirs->push_back(removeTrailingSlash(path)); |
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216 } |
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217 } else { |
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218 const DWORD createDirectoryErr = GetLastError(); |
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219 // if saAttr is specified, fail even if the directory exists |
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220 if (saAttr != NULL || !isDirectory(path)) { |
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221 JP_THROW(SysError(tstrings::any() << "CreateDirectory(" << path << ") failed", |
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222 CreateDirectory, createDirectoryErr)); |
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223 } |
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224 } |
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225 } |
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226 |
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227 } |
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228 |
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229 void createDirectory(const tstring &path, tstring_array* createdDirs) { |
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230 const tstring dirPath = removeTrailingSlash(path) + _T("\\"); |
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231 |
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232 tstring::size_type pos = dirPath.find_first_of(_T("\\/")); |
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233 while (pos != tstring::npos) { |
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234 const tstring subdirPath = dirPath.substr(0, pos + 1); |
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235 createDir(subdirPath, NULL, createdDirs); |
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236 pos = dirPath.find_first_of(_T("\\/"), pos + 1); |
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237 } |
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238 } |
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239 |
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240 |
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241 void copyFile(const tstring& fromPath, const tstring& toPath, bool failIfExists) { |
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242 createDirectory(dirname(toPath)); |
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243 if (!CopyFile(fromPath.c_str(), toPath.c_str(), (failIfExists ? TRUE : FALSE))) { |
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244 JP_THROW(SysError(tstrings::any() |
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245 << "CopyFile(" << fromPath << ", " << toPath << ", " |
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246 << failIfExists << ") failed", CopyFile)); |
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247 } |
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248 LOG_TRACE(tstrings::any() << "Copied [" << fromPath << "] file to [" |
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249 << toPath << "]"); |
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250 } |
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251 |
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252 |
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253 namespace { |
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254 |
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255 void moveFileImpl(const tstring& fromPath, const tstring& toPath, |
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256 DWORD flags) { |
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257 const bool isDir = isDirectory(fromPath); |
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258 if (!MoveFileEx(fromPath.c_str(), toPath.empty() ? NULL : toPath.c_str(), |
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259 flags)) { |
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260 JP_THROW(SysError(tstrings::any() << "MoveFileEx(" << fromPath |
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261 << ", " << toPath << ", " << flags << ") failed", |
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262 MoveFileEx)); |
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263 } |
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264 |
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265 const bool onReboot = 0 != (flags & MOVEFILE_DELAY_UNTIL_REBOOT); |
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266 |
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267 const LPCTSTR label = isDir ? _T("folder") : _T("file"); |
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268 |
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269 tstrings::any msg; |
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270 if (!toPath.empty()) { |
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271 if (onReboot) { |
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272 msg << "Move"; |
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273 } else { |
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274 msg << "Moved"; |
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275 } |
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276 msg << " '" << fromPath << "' " << label << " to '" << toPath << "'"; |
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277 } else { |
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278 if (onReboot) { |
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279 msg << "Delete"; |
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280 } else { |
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281 msg << "Deleted"; |
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282 } |
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283 msg << " '" << fromPath << "' " << label; |
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284 } |
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285 if (onReboot) { |
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286 msg << " on reboot"; |
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287 } |
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288 LOG_TRACE(msg); |
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289 } |
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290 |
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291 } // namespace |
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292 |
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293 |
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294 void moveFile(const tstring& fromPath, const tstring& toPath, bool failIfExists) |
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295 { |
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296 createDirectory(dirname(toPath)); |
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297 |
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298 DWORD flags = MOVEFILE_COPY_ALLOWED; |
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299 if (!failIfExists) { |
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300 flags |= MOVEFILE_REPLACE_EXISTING; |
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301 } |
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302 |
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303 moveFileImpl(fromPath, toPath, flags); |
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304 } |
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305 |
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306 void deleteFile(const tstring &path) |
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307 { |
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308 if (!deleteFile(path, std::nothrow)) { |
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309 JP_THROW(SysError(tstrings::any() |
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310 << "DeleteFile(" << path << ") failed", DeleteFile)); |
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311 } |
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312 } |
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313 |
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314 namespace { |
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315 |
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316 bool notFound(const DWORD status=GetLastError()) { |
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317 return status == ERROR_FILE_NOT_FOUND || status == ERROR_PATH_NOT_FOUND; |
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318 } |
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319 |
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320 bool deleteFileImpl(const std::nothrow_t &, const tstring &path) { |
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321 const bool deleted = (DeleteFile(path.c_str()) != 0); |
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322 if (deleted) { |
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323 LOG_TRACE(tstrings::any() << "Deleted [" << path << "] file"); |
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324 return true; |
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325 } |
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326 return notFound(); |
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327 } |
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328 |
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329 } // namespace |
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330 |
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331 bool deleteFile(const tstring &path, const std::nothrow_t &) throw() |
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332 { |
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333 bool deleted = deleteFileImpl(std::nothrow, path); |
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334 const DWORD status = GetLastError(); |
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335 if (!deleted && status == ERROR_ACCESS_DENIED) { |
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336 DWORD attrs = GetFileAttributes(path.c_str()); |
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337 SetLastError(status); |
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338 if (attrs == INVALID_FILE_ATTRIBUTES) { |
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339 return false; |
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340 } |
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341 if (attrs & FILE_ATTRIBUTE_READONLY) { |
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342 // DeleteFile() failed because file is R/O. |
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343 // Remove R/O attribute and retry DeleteFile(). |
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344 attrs &= ~FILE_ATTRIBUTE_READONLY; |
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345 if (SetFileAttributes(path.c_str(), attrs)) { |
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346 LOG_TRACE(tstrings::any() << "Discarded R/O attribute from [" |
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347 << path << "] file"); |
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348 deleted = deleteFileImpl(std::nothrow, path); |
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349 } else { |
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350 LOG_WARNING(SysError(tstrings::any() |
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351 << "Failed to discard R/O attribute from [" |
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352 << path << "] file. File will not be deleted", |
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353 SetFileAttributes).what()); |
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354 SetLastError(status); |
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355 } |
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356 } |
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357 } |
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358 |
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359 return deleted || notFound(); |
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360 } |
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361 |
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362 void deleteDirectory(const tstring &path) |
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363 { |
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364 if (!deleteDirectory(path, std::nothrow)) { |
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365 JP_THROW(SysError(tstrings::any() |
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366 << "RemoveDirectory(" << path << ") failed", RemoveDirectory)); |
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367 } |
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368 } |
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369 |
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370 bool deleteDirectory(const tstring &path, const std::nothrow_t &) throw() |
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371 { |
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372 const bool deleted = (RemoveDirectory(path.c_str()) != 0); |
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373 if (deleted) { |
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374 LOG_TRACE(tstrings::any() << "Deleted [" << path << "] directory"); |
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375 } |
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376 return deleted || notFound(); |
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377 } |
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378 |
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379 namespace { |
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380 |
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381 class DeleteFilesCallback: public DirectoryCallback { |
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382 public: |
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383 explicit DeleteFilesCallback(bool ff): failfast(ff), failed(false) { |
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384 } |
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385 |
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386 virtual bool onFile(const tstring& path) { |
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387 if (failfast) { |
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388 deleteFile(path); |
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389 } else { |
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390 updateStatus(deleteFile(path, std::nothrow)); |
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391 } |
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392 return true; |
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393 } |
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394 |
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395 bool good() const { |
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396 return !failed; |
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397 } |
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398 |
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399 protected: |
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400 void updateStatus(bool success) { |
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401 if (!success) { |
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402 failed = true; |
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403 } |
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404 } |
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405 |
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406 const bool failfast; |
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407 private: |
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408 bool failed; |
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409 }; |
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410 |
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411 class DeleteAllCallback: public DeleteFilesCallback { |
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412 public: |
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413 explicit DeleteAllCallback(bool failfast): DeleteFilesCallback(failfast) { |
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414 } |
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415 |
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416 virtual bool onDirectory(const tstring& path) { |
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417 if (failfast) { |
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418 deleteDirectoryRecursive(path); |
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419 } else { |
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420 updateStatus(deleteDirectoryRecursive(path, std::nothrow)); |
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421 } |
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422 return true; |
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423 } |
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424 }; |
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425 |
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426 |
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427 class BatchDeleter { |
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428 const tstring dirPath; |
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429 bool recursive; |
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430 public: |
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431 explicit BatchDeleter(const tstring& path): dirPath(path) { |
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432 deleteSubdirs(false); |
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433 } |
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434 |
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435 BatchDeleter& deleteSubdirs(bool v) { |
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436 recursive = v; |
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437 return *this; |
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438 } |
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439 |
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440 void execute() const { |
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441 if (!isFileExists(dirPath)) { |
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442 return; |
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443 } |
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444 iterateDirectory(true /* fail fast */); |
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445 if (recursive) { |
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446 deleteDirectory(dirPath); |
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447 } |
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448 } |
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449 |
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450 bool execute(const std::nothrow_t&) const { |
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451 if (!isFileExists(dirPath)) { |
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452 return true; |
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453 } |
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454 |
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455 if (!isDirectory(dirPath)) { |
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456 return false; |
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457 } |
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458 |
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459 JP_TRY; |
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460 if (!iterateDirectory(false /* ignore errors */)) { |
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461 return false; |
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462 } |
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463 if (recursive) { |
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464 return deleteDirectory(dirPath, std::nothrow); |
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465 } |
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466 return true; |
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467 JP_CATCH_ALL; |
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468 |
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469 return false; |
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470 } |
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471 |
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472 private: |
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473 bool iterateDirectory(bool failfast) const { |
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474 std::unique_ptr<DeleteFilesCallback> callback; |
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475 if (recursive) { |
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476 callback = std::unique_ptr<DeleteFilesCallback>( |
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477 new DeleteAllCallback(failfast)); |
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478 } else { |
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479 callback = std::unique_ptr<DeleteFilesCallback>( |
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480 new DeleteFilesCallback(failfast)); |
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481 } |
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482 |
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483 FileUtils::iterateDirectory(dirPath, *callback); |
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484 return callback->good(); |
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485 } |
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486 }; |
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487 |
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488 } // namespace |
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489 |
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490 void deleteFilesInDirectory(const tstring &dirPath) { |
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491 BatchDeleter(dirPath).execute(); |
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492 } |
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493 |
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494 bool deleteFilesInDirectory(const tstring &dirPath, |
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495 const std::nothrow_t &) throw() { |
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496 return BatchDeleter(dirPath).execute(std::nothrow); |
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497 } |
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498 |
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499 void deleteDirectoryRecursive(const tstring &dirPath) { |
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500 BatchDeleter(dirPath).deleteSubdirs(true).execute(); |
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501 } |
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502 |
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503 bool deleteDirectoryRecursive(const tstring &dirPath, |
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504 const std::nothrow_t &) throw() { |
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505 return BatchDeleter(dirPath).deleteSubdirs(true).execute(std::nothrow); |
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506 } |
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507 |
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508 namespace { |
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509 |
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510 struct FindFileDeleter { |
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511 typedef HANDLE pointer; |
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512 |
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513 void operator()(HANDLE h) { |
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514 if (h && h != INVALID_HANDLE_VALUE) { |
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515 FindClose(h); |
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516 } |
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517 } |
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518 }; |
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519 |
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520 typedef std::unique_ptr<HANDLE, FindFileDeleter> UniqueFindFileHandle; |
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521 |
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522 }; // namesace |
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523 void iterateDirectory(const tstring &dirPath, DirectoryCallback& callback) |
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524 { |
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525 const tstring searchString = combinePath(dirPath, _T("*")); |
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526 WIN32_FIND_DATA findData; |
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527 UniqueFindFileHandle h(FindFirstFile(searchString.c_str(), &findData)); |
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528 if (h.get() == INVALID_HANDLE_VALUE) { |
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529 // GetLastError() == ERROR_FILE_NOT_FOUND is OK - no files in the directory |
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530 // ERROR_PATH_NOT_FOUND is returned if the parent directory does not exist |
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531 if (GetLastError() != ERROR_FILE_NOT_FOUND) { |
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532 JP_THROW(SysError(tstrings::any() << "FindFirstFile(" << dirPath << ") failed", FindFirstFile)); |
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533 } |
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534 return; |
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535 } |
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536 |
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537 do { |
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538 const tstring fname(findData.cFileName); |
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539 const tstring filePath = combinePath(dirPath, fname); |
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540 if (!isDirectoryAttrs(findData.dwFileAttributes)) { |
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541 if (!callback.onFile(filePath)) { |
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542 return; |
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543 } |
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544 } else if (fname != _T(".") && fname != _T("..")) { |
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545 if (!callback.onDirectory(filePath)) { |
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546 return; |
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547 } |
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548 } |
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549 } while (FindNextFile(h.get(), &findData)); |
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550 |
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551 // expect GetLastError() == ERROR_NO_MORE_FILES |
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552 if (GetLastError() != ERROR_NO_MORE_FILES) { |
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553 JP_THROW(SysError(tstrings::any() << "FindNextFile(" << dirPath << ") failed", FindNextFile)); |
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554 } |
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555 } |
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556 |
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557 |
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558 tstring replaceSuffix(const tstring& path, const tstring& newSuffix) { |
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559 return (path.substr(0, path.size() - suffix(path).size()) + newSuffix); |
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560 } |
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561 |
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562 |
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563 DirectoryIterator& DirectoryIterator::findItems(tstring_array& v) { |
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564 if (!isDirectory(root)) { |
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565 return *this; |
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566 } |
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567 |
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568 iterateDirectory(root, *this); |
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569 v.insert(v.end(), items.begin(), items.end()); |
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570 items = tstring_array(); |
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571 return *this; |
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572 } |
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573 |
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574 bool DirectoryIterator::onFile(const tstring& path) { |
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575 if (theWithFiles) { |
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576 items.push_back(path); |
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577 } |
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578 return true; |
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579 } |
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580 |
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581 bool DirectoryIterator::onDirectory(const tstring& path) { |
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582 if (theWithFolders) { |
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583 items.push_back(path); |
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584 } |
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585 if (theRecurse) { |
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586 DirectoryIterator(path).recurse(theRecurse) |
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587 .withFiles(theWithFiles) |
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588 .withFolders(theWithFolders) |
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589 .findItems(items); |
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590 } |
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591 return true; |
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592 } |
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593 |
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594 |
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595 namespace { |
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596 |
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597 struct DeleterFunctor { |
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598 // Order of items in the following enum is important! |
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599 // It controls order in which items of particular type will be deleted. |
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600 // See Deleter::execute(). |
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601 enum { |
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602 File, |
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603 FilesInDirectory, |
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604 RecursiveDirectory, |
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605 EmptyDirectory |
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606 }; |
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607 |
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608 void operator () (const Deleter::Path& path) const { |
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609 switch (path.second) { |
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610 #define DELETE_SOME(o, f)\ |
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611 case o:\ |
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612 f(path.first, std::nothrow);\ |
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613 break |
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614 |
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615 DELETE_SOME(File, deleteFile); |
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616 DELETE_SOME(EmptyDirectory, deleteDirectory); |
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617 DELETE_SOME(FilesInDirectory, deleteFilesInDirectory); |
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618 DELETE_SOME(RecursiveDirectory, deleteDirectoryRecursive); |
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619 |
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620 #undef DELETE_SOME |
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621 default: |
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622 break; |
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623 } |
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624 } |
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625 }; |
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626 |
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627 } // namespace |
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628 |
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629 void Deleter::execute() { |
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630 Paths tmp; |
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631 tmp.swap(paths); |
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632 |
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633 // Reorder items to delete. |
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634 std::stable_sort(tmp.begin(), tmp.end(), [] (const Paths::value_type& a, |
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635 const Paths::value_type& b) { |
|
636 return a.second < b.second; |
|
637 }); |
|
638 |
|
639 std::for_each(tmp.begin(), tmp.end(), DeleterFunctor()); |
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640 } |
|
641 |
|
642 Deleter& Deleter::appendFile(const tstring& path) { |
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643 paths.push_back(std::make_pair(path, DeleterFunctor::File)); |
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644 return *this; |
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645 } |
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646 |
|
647 Deleter& Deleter::appendEmptyDirectory(const Directory& dir) { |
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648 tstring path = normalizePath(removeTrailingSlash(dir)); |
|
649 const tstring parent = normalizePath(removeTrailingSlash(dir.parent)); |
|
650 while(parent != path) { |
|
651 appendEmptyDirectory(path); |
|
652 path = dirname(path); |
|
653 } |
|
654 |
|
655 return *this; |
|
656 } |
|
657 |
|
658 Deleter& Deleter::appendEmptyDirectory(const tstring& path) { |
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659 paths.push_back(std::make_pair(path, |
|
660 DeleterFunctor::EmptyDirectory)); |
|
661 return *this; |
|
662 } |
|
663 |
|
664 Deleter& Deleter::appendAllFilesInDirectory(const tstring& path) { |
|
665 paths.push_back(std::make_pair(path, |
|
666 DeleterFunctor::FilesInDirectory)); |
|
667 return *this; |
|
668 } |
|
669 |
|
670 Deleter& Deleter::appendRecursiveDirectory(const tstring& path) { |
|
671 paths.push_back(std::make_pair(path, |
|
672 DeleterFunctor::RecursiveDirectory)); |
|
673 return *this; |
|
674 } |
|
675 |
|
676 |
|
677 FileWriter::FileWriter(const tstring& path): dstPath(path) { |
|
678 tmpFile = FileUtils::createTempFile(_T("jds"), _T(".tmp"), |
|
679 FileUtils::dirname(path)); |
|
680 |
|
681 cleaner.appendFile(tmpFile); |
|
682 |
|
683 // we want to get exception on error |
|
684 tmp.exceptions(std::ifstream::failbit | std::ifstream::badbit); |
|
685 tmp.open(tmpFile, std::ios::binary | std::ios::trunc); |
|
686 } |
|
687 |
|
688 FileWriter& FileWriter::write(const void* buf, size_t bytes) { |
|
689 tmp.write(static_cast<const char*>(buf), bytes); |
|
690 return *this; |
|
691 } |
|
692 |
|
693 void FileWriter::finalize() { |
|
694 tmp.close(); |
|
695 |
|
696 FileUtils::moveFile(tmpFile, dstPath, false); |
|
697 |
|
698 // cancel file deletion |
|
699 cleaner.cancel(); |
|
700 } |
|
701 |
|
702 } // namespace FileUtils |