Mercurial > hg > orthanc
annotate Core/SystemToolbox.cpp @ 2245:f8d4f151f660
osimis address
author | Sebastien Jodogne <s.jodogne@gmail.com> |
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date | Wed, 04 Jan 2017 13:00:01 +0100 |
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1 /** |
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2 * Orthanc - A Lightweight, RESTful DICOM Store |
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3 * Copyright (C) 2012-2016 Sebastien Jodogne, Medical Physics |
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4 * Department, University Hospital of Liege, Belgium |
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5 * Copyright (C) 2017 Osimis, Belgium |
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6 * |
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7 * This program is free software: you can redistribute it and/or |
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8 * modify it under the terms of the GNU General Public License as |
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9 * published by the Free Software Foundation, either version 3 of the |
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10 * License, or (at your option) any later version. |
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11 * |
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12 * In addition, as a special exception, the copyright holders of this |
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13 * program give permission to link the code of its release with the |
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14 * OpenSSL project's "OpenSSL" library (or with modified versions of it |
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15 * that use the same license as the "OpenSSL" library), and distribute |
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16 * the linked executables. You must obey the GNU General Public License |
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17 * in all respects for all of the code used other than "OpenSSL". If you |
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18 * modify file(s) with this exception, you may extend this exception to |
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19 * your version of the file(s), but you are not obligated to do so. If |
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20 * you do not wish to do so, delete this exception statement from your |
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21 * version. If you delete this exception statement from all source files |
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22 * in the program, then also delete it here. |
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23 * |
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24 * This program is distributed in the hope that it will be useful, but |
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25 * WITHOUT ANY WARRANTY; without even the implied warranty of |
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26 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
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27 * General Public License for more details. |
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28 * |
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29 * You should have received a copy of the GNU General Public License |
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30 * along with this program. If not, see <http://www.gnu.org/licenses/>. |
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31 **/ |
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32 |
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33 |
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34 #include "PrecompiledHeaders.h" |
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35 #include "SystemToolbox.h" |
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36 |
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37 |
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38 #if BOOST_HAS_DATE_TIME == 1 |
2173 | 39 # include <boost/date_time/posix_time/posix_time.hpp> |
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40 #endif |
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41 |
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42 |
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43 #if defined(_WIN32) |
2173 | 44 # include <windows.h> |
45 # include <process.h> // For "_spawnvp()" and "_getpid()" | |
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46 #else |
2173 | 47 # include <unistd.h> // For "execvp()" |
48 # include <sys/wait.h> // For "waitpid()" | |
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49 #endif |
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50 |
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52 #if defined(__APPLE__) && defined(__MACH__) |
2173 | 53 # include <mach-o/dyld.h> /* _NSGetExecutablePath */ |
54 # include <limits.h> /* PATH_MAX */ | |
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55 #endif |
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56 |
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58 #if defined(__linux__) || defined(__FreeBSD_kernel__) || defined(__FreeBSD__) |
2173 | 59 # include <limits.h> /* PATH_MAX */ |
60 # include <signal.h> | |
61 # include <unistd.h> | |
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62 #endif |
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63 |
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64 |
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65 // Inclusions for UUID |
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66 // http://stackoverflow.com/a/1626302 |
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67 |
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68 extern "C" |
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69 { |
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70 #ifdef WIN32 |
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71 # include <rpc.h> |
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72 #else |
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73 # include <uuid/uuid.h> |
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74 #endif |
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75 } |
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76 |
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77 |
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78 #include "Logging.h" |
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79 #include "OrthancException.h" |
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80 #include "Toolbox.h" |
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81 |
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82 #include <boost/filesystem.hpp> |
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83 #include <boost/filesystem/fstream.hpp> |
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84 |
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85 |
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86 namespace Orthanc |
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87 { |
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88 static bool finish_; |
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89 static ServerBarrierEvent barrierEvent_; |
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90 |
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91 #if defined(_WIN32) |
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92 static BOOL WINAPI ConsoleControlHandler(DWORD dwCtrlType) |
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93 { |
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94 // http://msdn.microsoft.com/en-us/library/ms683242(v=vs.85).aspx |
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95 finish_ = true; |
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96 return true; |
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97 } |
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98 #else |
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99 static void SignalHandler(int signal) |
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100 { |
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101 if (signal == SIGHUP) |
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102 { |
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103 barrierEvent_ = ServerBarrierEvent_Reload; |
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104 } |
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105 |
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106 finish_ = true; |
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107 } |
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108 #endif |
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109 |
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110 |
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111 static ServerBarrierEvent ServerBarrierInternal(const bool* stopFlag) |
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112 { |
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113 #if defined(_WIN32) |
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114 SetConsoleCtrlHandler(ConsoleControlHandler, true); |
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115 #else |
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116 signal(SIGINT, SignalHandler); |
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117 signal(SIGQUIT, SignalHandler); |
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118 signal(SIGTERM, SignalHandler); |
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119 signal(SIGHUP, SignalHandler); |
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120 #endif |
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121 |
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122 // Active loop that awakens every 100ms |
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123 finish_ = false; |
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124 barrierEvent_ = ServerBarrierEvent_Stop; |
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125 while (!(*stopFlag || finish_)) |
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126 { |
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127 SystemToolbox::USleep(100 * 1000); |
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128 } |
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129 |
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130 #if defined(_WIN32) |
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131 SetConsoleCtrlHandler(ConsoleControlHandler, false); |
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132 #else |
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133 signal(SIGINT, NULL); |
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134 signal(SIGQUIT, NULL); |
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135 signal(SIGTERM, NULL); |
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136 signal(SIGHUP, NULL); |
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137 #endif |
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138 |
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139 return barrierEvent_; |
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140 } |
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141 |
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142 |
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143 ServerBarrierEvent SystemToolbox::ServerBarrier(const bool& stopFlag) |
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144 { |
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145 return ServerBarrierInternal(&stopFlag); |
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146 } |
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147 |
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148 |
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149 ServerBarrierEvent SystemToolbox::ServerBarrier() |
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150 { |
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151 const bool stopFlag = false; |
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152 return ServerBarrierInternal(&stopFlag); |
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153 } |
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154 |
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155 |
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156 void SystemToolbox::USleep(uint64_t microSeconds) |
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157 { |
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158 #if defined(_WIN32) |
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159 ::Sleep(static_cast<DWORD>(microSeconds / static_cast<uint64_t>(1000))); |
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160 #elif defined(__linux__) || defined(__APPLE__) || defined(__FreeBSD_kernel__) || defined(__FreeBSD__) || defined(__native_client__) |
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161 usleep(microSeconds); |
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162 #else |
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163 #error Support your platform here |
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164 #endif |
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165 } |
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166 |
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167 |
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168 static std::streamsize GetStreamSize(std::istream& f) |
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169 { |
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170 // http://www.cplusplus.com/reference/iostream/istream/tellg/ |
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171 f.seekg(0, std::ios::end); |
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172 std::streamsize size = f.tellg(); |
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173 f.seekg(0, std::ios::beg); |
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174 |
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175 return size; |
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176 } |
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177 |
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178 |
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179 void SystemToolbox::ReadFile(std::string& content, |
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180 const std::string& path) |
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181 { |
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182 if (!IsRegularFile(path)) |
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183 { |
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184 LOG(ERROR) << std::string("The path does not point to a regular file: ") << path; |
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185 throw OrthancException(ErrorCode_RegularFileExpected); |
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186 } |
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187 |
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188 boost::filesystem::ifstream f; |
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189 f.open(path, std::ifstream::in | std::ifstream::binary); |
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190 if (!f.good()) |
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191 { |
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192 throw OrthancException(ErrorCode_InexistentFile); |
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193 } |
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194 |
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195 std::streamsize size = GetStreamSize(f); |
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196 content.resize(size); |
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197 if (size != 0) |
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198 { |
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199 f.read(reinterpret_cast<char*>(&content[0]), size); |
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200 } |
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201 |
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202 f.close(); |
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203 } |
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204 |
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205 |
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206 bool SystemToolbox::ReadHeader(std::string& header, |
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207 const std::string& path, |
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208 size_t headerSize) |
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209 { |
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210 if (!IsRegularFile(path)) |
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211 { |
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212 LOG(ERROR) << std::string("The path does not point to a regular file: ") << path; |
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213 throw OrthancException(ErrorCode_RegularFileExpected); |
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214 } |
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215 |
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216 boost::filesystem::ifstream f; |
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217 f.open(path, std::ifstream::in | std::ifstream::binary); |
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218 if (!f.good()) |
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219 { |
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220 throw OrthancException(ErrorCode_InexistentFile); |
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221 } |
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222 |
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223 bool full = true; |
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224 |
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225 { |
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226 std::streamsize size = GetStreamSize(f); |
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227 if (size <= 0) |
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228 { |
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229 headerSize = 0; |
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230 full = false; |
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231 } |
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232 else if (static_cast<size_t>(size) < headerSize) |
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233 { |
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234 headerSize = size; // Truncate to the size of the file |
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235 full = false; |
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236 } |
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237 } |
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238 |
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239 header.resize(headerSize); |
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240 if (headerSize != 0) |
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241 { |
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242 f.read(reinterpret_cast<char*>(&header[0]), headerSize); |
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243 } |
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244 |
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245 f.close(); |
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246 |
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247 return full; |
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248 } |
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249 |
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250 |
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251 void SystemToolbox::WriteFile(const void* content, |
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252 size_t size, |
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253 const std::string& path) |
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254 { |
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255 boost::filesystem::ofstream f; |
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256 f.open(path, std::ofstream::out | std::ofstream::binary); |
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257 if (!f.good()) |
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258 { |
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259 throw OrthancException(ErrorCode_CannotWriteFile); |
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260 } |
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261 |
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262 if (size != 0) |
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263 { |
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264 f.write(reinterpret_cast<const char*>(content), size); |
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265 |
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266 if (!f.good()) |
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267 { |
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268 f.close(); |
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269 throw OrthancException(ErrorCode_FileStorageCannotWrite); |
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270 } |
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271 } |
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272 |
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273 f.close(); |
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274 } |
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275 |
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276 |
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277 void SystemToolbox::WriteFile(const std::string& content, |
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278 const std::string& path) |
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279 { |
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280 WriteFile(content.size() > 0 ? content.c_str() : NULL, |
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281 content.size(), path); |
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282 } |
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283 |
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284 |
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285 void SystemToolbox::RemoveFile(const std::string& path) |
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286 { |
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287 if (boost::filesystem::exists(path)) |
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288 { |
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289 if (IsRegularFile(path)) |
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290 { |
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291 boost::filesystem::remove(path); |
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292 } |
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293 else |
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294 { |
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295 throw OrthancException(ErrorCode_RegularFileExpected); |
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296 } |
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297 } |
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298 } |
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299 |
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300 |
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301 uint64_t SystemToolbox::GetFileSize(const std::string& path) |
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302 { |
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303 try |
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304 { |
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305 return static_cast<uint64_t>(boost::filesystem::file_size(path)); |
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306 } |
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307 catch (boost::filesystem::filesystem_error&) |
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308 { |
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309 throw OrthancException(ErrorCode_InexistentFile); |
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310 } |
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311 } |
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312 |
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313 |
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314 void SystemToolbox::MakeDirectory(const std::string& path) |
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315 { |
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316 if (boost::filesystem::exists(path)) |
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317 { |
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318 if (!boost::filesystem::is_directory(path)) |
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319 { |
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320 throw OrthancException(ErrorCode_DirectoryOverFile); |
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321 } |
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322 } |
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323 else |
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324 { |
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325 if (!boost::filesystem::create_directories(path)) |
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326 { |
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327 throw OrthancException(ErrorCode_MakeDirectory); |
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328 } |
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329 } |
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330 } |
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331 |
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332 |
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333 bool SystemToolbox::IsExistingFile(const std::string& path) |
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334 { |
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335 return boost::filesystem::exists(path); |
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336 } |
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337 |
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338 |
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339 #if defined(_WIN32) |
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340 static std::string GetPathToExecutableInternal() |
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341 { |
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342 // Yes, this is ugly, but there is no simple way to get the |
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343 // required buffer size, so we use a big constant |
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344 std::vector<char> buffer(32768); |
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345 /*int bytes =*/ GetModuleFileNameA(NULL, &buffer[0], static_cast<DWORD>(buffer.size() - 1)); |
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346 return std::string(&buffer[0]); |
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347 } |
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348 |
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349 #elif defined(__linux__) || defined(__FreeBSD_kernel__) || defined(__FreeBSD__) |
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350 static std::string GetPathToExecutableInternal() |
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351 { |
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352 std::vector<char> buffer(PATH_MAX + 1); |
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353 ssize_t bytes = readlink("/proc/self/exe", &buffer[0], buffer.size() - 1); |
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354 if (bytes == 0) |
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355 { |
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356 throw OrthancException(ErrorCode_PathToExecutable); |
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357 } |
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358 |
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359 return std::string(&buffer[0]); |
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360 } |
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361 |
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362 #elif defined(__APPLE__) && defined(__MACH__) |
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363 static std::string GetPathToExecutableInternal() |
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364 { |
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365 char pathbuf[PATH_MAX + 1]; |
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366 unsigned int bufsize = static_cast<int>(sizeof(pathbuf)); |
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367 |
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368 _NSGetExecutablePath( pathbuf, &bufsize); |
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369 |
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370 return std::string(pathbuf); |
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371 } |
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372 |
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373 #else |
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374 #error Support your platform here |
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375 #endif |
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376 |
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377 |
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378 std::string SystemToolbox::GetPathToExecutable() |
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379 { |
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380 boost::filesystem::path p(GetPathToExecutableInternal()); |
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381 return boost::filesystem::absolute(p).string(); |
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382 } |
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383 |
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384 |
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385 std::string SystemToolbox::GetDirectoryOfExecutable() |
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386 { |
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387 boost::filesystem::path p(GetPathToExecutableInternal()); |
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388 return boost::filesystem::absolute(p.parent_path()).string(); |
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389 } |
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390 |
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391 |
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392 void SystemToolbox::ExecuteSystemCommand(const std::string& command, |
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393 const std::vector<std::string>& arguments) |
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394 { |
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395 // Convert the arguments as a C array |
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396 std::vector<char*> args(arguments.size() + 2); |
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397 |
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398 args.front() = const_cast<char*>(command.c_str()); |
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399 |
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400 for (size_t i = 0; i < arguments.size(); i++) |
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401 { |
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402 args[i + 1] = const_cast<char*>(arguments[i].c_str()); |
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403 } |
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404 |
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405 args.back() = NULL; |
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406 |
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407 int status; |
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408 |
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409 #if defined(_WIN32) |
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410 // http://msdn.microsoft.com/en-us/library/275khfab.aspx |
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411 status = static_cast<int>(_spawnvp(_P_OVERLAY, command.c_str(), &args[0])); |
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412 |
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413 #else |
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414 int pid = fork(); |
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415 |
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416 if (pid == -1) |
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417 { |
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418 // Error in fork() |
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419 #if ORTHANC_ENABLE_LOGGING == 1 |
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420 LOG(ERROR) << "Cannot fork a child process"; |
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421 #endif |
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422 |
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423 throw OrthancException(ErrorCode_SystemCommand); |
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424 } |
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425 else if (pid == 0) |
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426 { |
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427 // Execute the system command in the child process |
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428 execvp(command.c_str(), &args[0]); |
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429 |
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430 // We should never get here |
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431 _exit(1); |
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432 } |
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433 else |
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434 { |
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435 // Wait for the system command to exit |
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436 waitpid(pid, &status, 0); |
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437 } |
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438 #endif |
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439 |
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440 if (status != 0) |
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441 { |
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442 #if ORTHANC_ENABLE_LOGGING == 1 |
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443 LOG(ERROR) << "System command failed with status code " << status; |
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444 #endif |
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445 |
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446 throw OrthancException(ErrorCode_SystemCommand); |
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447 } |
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448 } |
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449 |
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450 |
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451 int SystemToolbox::GetProcessId() |
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452 { |
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453 #if defined(_WIN32) |
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454 return static_cast<int>(_getpid()); |
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455 #else |
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456 return static_cast<int>(getpid()); |
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457 #endif |
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458 } |
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459 |
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460 |
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461 bool SystemToolbox::IsRegularFile(const std::string& path) |
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462 { |
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463 namespace fs = boost::filesystem; |
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464 |
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465 try |
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466 { |
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467 if (fs::exists(path)) |
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468 { |
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469 fs::file_status status = fs::status(path); |
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470 return (status.type() == boost::filesystem::regular_file || |
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471 status.type() == boost::filesystem::reparse_file); // Fix BitBucket issue #11 |
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472 } |
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473 } |
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474 catch (fs::filesystem_error&) |
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475 { |
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476 } |
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477 |
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478 return false; |
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479 } |
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480 |
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481 |
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482 FILE* SystemToolbox::OpenFile(const std::string& path, |
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483 FileMode mode) |
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484 { |
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485 #if defined(_WIN32) |
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486 // TODO Deal with special characters by converting to the current locale |
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487 #endif |
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488 |
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489 const char* m; |
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490 switch (mode) |
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491 { |
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492 case FileMode_ReadBinary: |
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493 m = "rb"; |
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494 break; |
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495 |
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496 case FileMode_WriteBinary: |
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497 m = "wb"; |
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498 break; |
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499 |
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500 default: |
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501 throw OrthancException(ErrorCode_ParameterOutOfRange); |
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502 } |
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503 |
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504 return fopen(path.c_str(), m); |
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505 } |
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506 |
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507 |
2172
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508 std::string SystemToolbox::GenerateUuid() |
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509 { |
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510 #ifdef WIN32 |
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511 UUID uuid; |
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512 UuidCreate ( &uuid ); |
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513 |
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514 unsigned char * str; |
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515 UuidToStringA ( &uuid, &str ); |
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516 |
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517 std::string s( ( char* ) str ); |
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518 |
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519 RpcStringFreeA ( &str ); |
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520 #else |
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521 uuid_t uuid; |
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522 uuid_generate_random ( uuid ); |
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523 char s[37]; |
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524 uuid_unparse ( uuid, s ); |
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525 #endif |
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526 return s; |
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527 } |
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528 |
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529 |
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530 #if BOOST_HAS_DATE_TIME == 1 |
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531 std::string SystemToolbox::GetNowIsoString() |
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532 { |
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533 boost::posix_time::ptime now = boost::posix_time::second_clock::local_time(); |
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534 return boost::posix_time::to_iso_string(now); |
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535 } |
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536 |
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537 void SystemToolbox::GetNowDicom(std::string& date, |
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538 std::string& time) |
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539 { |
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540 boost::posix_time::ptime now = boost::posix_time::second_clock::local_time(); |
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541 tm tm = boost::posix_time::to_tm(now); |
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542 |
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543 char s[32]; |
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544 sprintf(s, "%04d%02d%02d", tm.tm_year + 1900, tm.tm_mon + 1, tm.tm_mday); |
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545 date.assign(s); |
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546 |
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547 // TODO milliseconds |
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548 sprintf(s, "%02d%02d%02d.%06d", tm.tm_hour, tm.tm_min, tm.tm_sec, 0); |
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549 time.assign(s); |
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550 } |
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551 #endif |
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552 } |