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annotate Core/Logging.h @ 2945:3c636087d060

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author Sebastien Jodogne <s.jodogne@gmail.com>
date Thu, 29 Nov 2018 16:35:18 +0100
parents a4f885670da7
children 4e43e67f8ecf
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1 /**
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2 * Orthanc - A Lightweight, RESTful DICOM Store
1900
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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) 2017-2018 Osimis S.A., 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 #pragma once
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35
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36 #include <iostream>
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37
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38 #if !defined(ORTHANC_ENABLE_LOGGING)
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39 # error The macro ORTHANC_ENABLE_LOGGING must be defined
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40 #endif
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41
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42 #if !defined(ORTHANC_ENABLE_LOGGING_PLUGIN)
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43 # if ORTHANC_ENABLE_LOGGING == 1
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44 # error The macro ORTHANC_ENABLE_LOGGING_PLUGIN must be defined
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45 # else
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46 # define ORTHANC_ENABLE_LOGGING_PLUGIN 0
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47 # endif
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48 #endif
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49
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50 #if !defined(ORTHANC_ENABLE_LOGGING_STDIO)
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51 # if ORTHANC_ENABLE_LOGGING == 1
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52 # error The macro ORTHANC_ENABLE_LOGGING_STDIO must be defined
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53 # else
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54 # define ORTHANC_ENABLE_LOGGING_STDIO 0
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55 # endif
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56 #endif
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57
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58 #if ORTHANC_ENABLE_LOGGING_PLUGIN == 1
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59 # include <orthanc/OrthancCPlugin.h>
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60 #endif
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61
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62 #include <boost/lexical_cast.hpp>
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63
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64 namespace Orthanc
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65 {
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66 namespace Logging
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67 {
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68 #if ORTHANC_ENABLE_LOGGING_PLUGIN == 1
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69 void Initialize(OrthancPluginContext* context);
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70 #else
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71 void Initialize();
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72 #endif
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73
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74 void Finalize();
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75
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76 void Reset();
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77
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78 void Flush();
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79
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80 void EnableInfoLevel(bool enabled);
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81
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82 void EnableTraceLevel(bool enabled);
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83
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84 void SetTargetFile(const std::string& path);
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85
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86 void SetTargetFolder(const std::string& path);
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87
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88 struct NullStream : public std::ostream
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89 {
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90 NullStream() :
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91 std::ios(0),
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92 std::ostream(0)
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93 {
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94 }
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95
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96 template <typename T>
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97 std::ostream& operator<< (const T& message)
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98 {
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99 return *this;
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100 }
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101 };
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102 }
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103 }
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104
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105
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106 #if ORTHANC_ENABLE_LOGGING != 1
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107
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108 # define LOG(level) ::Orthanc::Logging::NullStream()
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109 # define VLOG(level) ::Orthanc::Logging::NullStream()
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110
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111
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112 #elif (ORTHANC_ENABLE_LOGGING_PLUGIN == 1 || \
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113 ORTHANC_ENABLE_LOGGING_STDIO == 1)
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114
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115 # include <boost/noncopyable.hpp>
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116 # define LOG(level) ::Orthanc::Logging::InternalLogger \
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117 (::Orthanc::Logging::InternalLevel_ ## level, __FILE__, __LINE__)
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118 # define VLOG(level) ::Orthanc::Logging::InternalLogger \
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119 (::Orthanc::Logging::InternalLevel_TRACE, __FILE__, __LINE__)
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120
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121 namespace Orthanc
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122 {
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123 namespace Logging
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124 {
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125 enum InternalLevel
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126 {
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127 InternalLevel_ERROR,
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128 InternalLevel_WARNING,
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129 InternalLevel_INFO,
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130 InternalLevel_TRACE
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131 };
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132
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133 class InternalLogger : public boost::noncopyable
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134 {
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135 private:
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136 InternalLevel level_;
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137 std::string message_;
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138
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139 public:
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140 InternalLogger(InternalLevel level,
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141 const char* file,
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142 int line);
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143
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144 ~InternalLogger();
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145
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146 template <typename T>
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147 InternalLogger& operator<< (const T& message)
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148 {
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149 message_ += boost::lexical_cast<std::string>(message);
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150 return *this;
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151 }
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152 };
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153 }
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154 }
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155
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156
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157
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158
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159 #else /* ORTHANC_ENABLE_LOGGING_PLUGIN == 0 &&
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160 ORTHANC_ENABLE_LOGGING_STDIO == 0 &&
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161 ORTHANC_ENABLE_LOGGING == 1 */
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162
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163 # include <boost/thread/mutex.hpp>
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164 # define LOG(level) ::Orthanc::Logging::InternalLogger(#level, __FILE__, __LINE__)
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165 # define VLOG(level) ::Orthanc::Logging::InternalLogger("TRACE", __FILE__, __LINE__)
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166
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167 namespace Orthanc
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168 {
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169 namespace Logging
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170 {
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171 class InternalLogger
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172 {
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173 private:
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174 boost::mutex::scoped_lock lock_;
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175 NullStream null_;
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176 std::ostream* stream_;
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177
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178 public:
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179 InternalLogger(const char* level,
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180 const char* file,
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181 int line);
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182
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183 ~InternalLogger();
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184
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185 template <typename T>
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186 std::ostream& operator<< (const T& message)
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187 {
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188 return (*stream_) << boost::lexical_cast<std::string>(message);
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189 }
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190 };
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191 }
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192 }
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193
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194 #endif // ORTHANC_ENABLE_LOGGING