3202
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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) 2017-2019 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 #include "../PrecompiledHeaders.h"
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35 #include "DicomWebJsonVisitor.h"
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36
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37 #include "../OrthancException.h"
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38 #include "../Toolbox.h"
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39 #include "FromDcmtkBridge.h"
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40
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41 #include <boost/math/special_functions/round.hpp>
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42 #include <boost/lexical_cast.hpp>
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43
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44
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45 static const char* const KEY_ALPHABETIC = "Alphabetic";
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46 static const char* const KEY_BULK_DATA_URI = "BulkDataURI";
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47 static const char* const KEY_INLINE_BINARY = "InlineBinary";
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48 static const char* const KEY_SQ = "SQ";
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49 static const char* const KEY_VALUE = "Value";
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50 static const char* const KEY_VR = "vr";
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51
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52
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53 namespace Orthanc
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54 {
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55 #if ORTHANC_ENABLE_PUGIXML == 1
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56 static void ExploreXmlDataset(pugi::xml_node& target,
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57 const Json::Value& source)
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58 {
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59 assert(source.type() == Json::objectValue);
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60
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61 Json::Value::Members members = source.getMemberNames();
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62 for (size_t i = 0; i < members.size(); i++)
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63 {
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64 const DicomTag tag = FromDcmtkBridge::ParseTag(members[i]);
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65 const Json::Value& content = source[members[i]];
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66
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67 assert(content.type() == Json::objectValue &&
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68 content.isMember("vr") &&
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69 content["vr"].type() == Json::stringValue);
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70 const std::string vr = content["vr"].asString();
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71
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72 const std::string keyword = FromDcmtkBridge::GetTagName(tag, "");
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73
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74 pugi::xml_node node = target.append_child("DicomAttribute");
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75 node.append_attribute("tag").set_value(members[i].c_str());
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76 node.append_attribute("vr").set_value(vr.c_str());
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77
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78 if (keyword != std::string(DcmTag_ERROR_TagName))
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79 {
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80 node.append_attribute("keyword").set_value(keyword.c_str());
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81 }
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82
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83 if (content.isMember(KEY_VALUE))
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84 {
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85 assert(content[KEY_VALUE].type() == Json::arrayValue);
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86
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87 for (Json::Value::ArrayIndex j = 0; j < content[KEY_VALUE].size(); j++)
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88 {
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89 std::string number = boost::lexical_cast<std::string>(j + 1);
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90
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91 if (vr == "SQ")
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92 {
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93 if (content[KEY_VALUE][j].type() == Json::objectValue)
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94 {
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95 pugi::xml_node child = node.append_child("Item");
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96 child.append_attribute("number").set_value(number.c_str());
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97 ExploreXmlDataset(child, content[KEY_VALUE][j]);
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98 }
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99 }
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100 if (vr == "PN")
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101 {
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102 if (content[KEY_VALUE][j].isMember(KEY_ALPHABETIC) &&
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103 content[KEY_VALUE][j][KEY_ALPHABETIC].type() == Json::stringValue)
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104 {
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105 std::vector<std::string> tokens;
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106 Toolbox::TokenizeString(tokens, content[KEY_VALUE][j][KEY_ALPHABETIC].asString(), '^');
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107
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108 pugi::xml_node child = node.append_child("PersonName");
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109 child.append_attribute("number").set_value(number.c_str());
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110
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111 pugi::xml_node name = child.append_child(KEY_ALPHABETIC);
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112
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113 if (tokens.size() >= 1)
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114 {
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115 name.append_child("FamilyName").text() = tokens[0].c_str();
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116 }
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117
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118 if (tokens.size() >= 2)
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119 {
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120 name.append_child("GivenName").text() = tokens[1].c_str();
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121 }
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122
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123 if (tokens.size() >= 3)
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124 {
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125 name.append_child("MiddleName").text() = tokens[2].c_str();
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126 }
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127
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128 if (tokens.size() >= 4)
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129 {
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130 name.append_child("NamePrefix").text() = tokens[3].c_str();
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131 }
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132
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133 if (tokens.size() >= 5)
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134 {
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135 name.append_child("NameSuffix").text() = tokens[4].c_str();
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136 }
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137 }
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138 }
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139 else
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140 {
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141 pugi::xml_node child = node.append_child("Value");
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142 child.append_attribute("number").set_value(number.c_str());
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143
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144 switch (content[KEY_VALUE][j].type())
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145 {
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146 case Json::stringValue:
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147 child.text() = content[KEY_VALUE][j].asCString();
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148 break;
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149
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150 case Json::realValue:
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151 child.text() = content[KEY_VALUE][j].asFloat();
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152 break;
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153
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154 case Json::intValue:
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155 child.text() = content[KEY_VALUE][j].asInt();
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156 break;
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157
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158 case Json::uintValue:
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159 child.text() = content[KEY_VALUE][j].asUInt();
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160 break;
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161
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162 default:
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163 break;
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164 }
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165 }
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166 }
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167 }
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168 else if (content.isMember(KEY_BULK_DATA_URI) &&
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169 content[KEY_BULK_DATA_URI].type() == Json::stringValue)
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170 {
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171 pugi::xml_node child = node.append_child("BulkData");
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172 child.append_attribute("URI").set_value(content[KEY_BULK_DATA_URI].asCString());
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173 }
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174 else if (content.isMember(KEY_INLINE_BINARY) &&
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175 content[KEY_INLINE_BINARY].type() == Json::stringValue)
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176 {
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177 pugi::xml_node child = node.append_child("InlineBinary");
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178 child.text() = content[KEY_INLINE_BINARY].asCString();
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179 }
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180 }
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181 }
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182 #endif
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183
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184
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185 #if ORTHANC_ENABLE_PUGIXML == 1
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186 static void DicomWebJsonToXml(pugi::xml_document& target,
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187 const Json::Value& source)
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188 {
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189 pugi::xml_node root = target.append_child("NativeDicomModel");
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190 root.append_attribute("xmlns").set_value("http://dicom.nema.org/PS3.19/models/NativeDICOM");
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191 root.append_attribute("xsi:schemaLocation").set_value("http://dicom.nema.org/PS3.19/models/NativeDICOM");
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192 root.append_attribute("xmlns:xsi").set_value("http://www.w3.org/2001/XMLSchema-instance");
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193
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194 ExploreXmlDataset(root, source);
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195
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196 pugi::xml_node decl = target.prepend_child(pugi::node_declaration);
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197 decl.append_attribute("version").set_value("1.0");
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198 decl.append_attribute("encoding").set_value("utf-8");
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199 }
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200 #endif
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201
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202
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203 std::string DicomWebJsonVisitor::FormatTag(const DicomTag& tag)
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204 {
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205 char buf[16];
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206 sprintf(buf, "%04X%04X", tag.GetGroup(), tag.GetElement());
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207 return std::string(buf);
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208 }
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209
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210
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211 Json::Value& DicomWebJsonVisitor::CreateNode(const std::vector<DicomTag>& parentTags,
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212 const std::vector<size_t>& parentIndexes,
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213 const DicomTag& tag)
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214 {
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215 assert(parentTags.size() == parentIndexes.size());
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216
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217 Json::Value* node = &result_;
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218
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219 for (size_t i = 0; i < parentTags.size(); i++)
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220 {
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221 std::string t = FormatTag(parentTags[i]);
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222
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223 if (!node->isMember(t))
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224 {
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225 Json::Value item = Json::objectValue;
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226 item[KEY_VR] = KEY_SQ;
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227 item[KEY_VALUE] = Json::arrayValue;
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228 item[KEY_VALUE].append(Json::objectValue);
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229 (*node) [t] = item;
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230
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231 node = &(*node)[t][KEY_VALUE][0];
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232 }
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233 else if ((*node) [t].type() != Json::objectValue ||
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234 !(*node) [t].isMember(KEY_VR) ||
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235 (*node) [t][KEY_VR].type() != Json::stringValue ||
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236 (*node) [t][KEY_VR].asString() != KEY_SQ ||
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237 !(*node) [t].isMember(KEY_VALUE) ||
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238 (*node) [t][KEY_VALUE].type() != Json::arrayValue)
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239 {
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240 throw OrthancException(ErrorCode_InternalError);
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241 }
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242 else
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243 {
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244 size_t currentSize = (*node) [t][KEY_VALUE].size();
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245
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246 if (parentIndexes[i] < currentSize)
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247 {
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248 // The node already exists
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249 }
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250 else if (parentIndexes[i] == currentSize)
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251 {
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252 (*node) [t][KEY_VALUE].append(Json::objectValue);
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253 }
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254 else
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255 {
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256 throw OrthancException(ErrorCode_InternalError);
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257 }
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258
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259 node = &(*node) [t][KEY_VALUE][Json::ArrayIndex(parentIndexes[i])];
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260 }
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261 }
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262
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263 assert(node->type() == Json::objectValue);
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264
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265 std::string t = FormatTag(tag);
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266 if (node->isMember(t))
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267 {
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268 throw OrthancException(ErrorCode_InternalError);
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269 }
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270 else
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271 {
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272 (*node) [t] = Json::objectValue;
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273 return (*node) [t];
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274 }
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275 }
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276
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277
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278 Json::Value DicomWebJsonVisitor::FormatInteger(int64_t value)
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279 {
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280 if (value < 0)
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281 {
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282 return Json::Value(static_cast<int32_t>(value));
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283 }
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284 else
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285 {
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286 return Json::Value(static_cast<uint32_t>(value));
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287 }
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288 }
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289
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290
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291 Json::Value DicomWebJsonVisitor::FormatDouble(double value)
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292 {
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293 long long a = boost::math::llround<double>(value);
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294
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295 double d = fabs(value - static_cast<double>(a));
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296
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297 if (d <= std::numeric_limits<double>::epsilon() * 100.0)
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298 {
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299 return FormatInteger(a);
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300 }
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301 else
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302 {
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303 return Json::Value(value);
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304 }
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305 }
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306
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307
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308 #if ORTHANC_ENABLE_PUGIXML == 1
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309 void DicomWebJsonVisitor::FormatXml(pugi::xml_document& target) const
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310 {
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311 DicomWebJsonToXml(target, result_);
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312 }
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313 #endif
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314
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315
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316 void DicomWebJsonVisitor::VisitEmptySequence(const std::vector<DicomTag>& parentTags,
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317 const std::vector<size_t>& parentIndexes,
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318 const DicomTag& tag)
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319 {
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320 if (tag.GetElement() != 0x0000)
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321 {
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322 Json::Value& node = CreateNode(parentTags, parentIndexes, tag);
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323 node[KEY_VR] = EnumerationToString(ValueRepresentation_Sequence);
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324 }
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325 }
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326
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327
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328 void DicomWebJsonVisitor::VisitBinary(const std::vector<DicomTag>& parentTags,
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329 const std::vector<size_t>& parentIndexes,
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330 const DicomTag& tag,
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331 ValueRepresentation vr,
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332 const void* data,
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333 size_t size)
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334 {
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335 assert(vr == ValueRepresentation_OtherByte ||
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336 vr == ValueRepresentation_OtherDouble ||
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337 vr == ValueRepresentation_OtherFloat ||
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338 vr == ValueRepresentation_OtherLong ||
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339 vr == ValueRepresentation_OtherWord ||
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340 vr == ValueRepresentation_Unknown);
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341
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342 if (tag.GetElement() != 0x0000)
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343 {
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344 BinaryMode mode;
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345 std::string bulkDataUri;
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346
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347 if (formatter_ == NULL)
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348 {
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349 mode = BinaryMode_InlineBinary;
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350 }
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351 else
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352 {
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353 mode = formatter_->Format(bulkDataUri, parentTags, parentIndexes, tag, vr);
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354 }
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355
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356 if (mode != BinaryMode_Ignore)
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357 {
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358 Json::Value& node = CreateNode(parentTags, parentIndexes, tag);
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359 node[KEY_VR] = EnumerationToString(vr);
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360
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361 switch (mode)
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362 {
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363 case BinaryMode_BulkDataUri:
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364 node[KEY_BULK_DATA_URI] = bulkDataUri;
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365 break;
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366
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367 case BinaryMode_InlineBinary:
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368 {
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369 std::string tmp(static_cast<const char*>(data), size);
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370
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371 std::string base64;
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372 Toolbox::EncodeBase64(base64, tmp);
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373
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374 node[KEY_INLINE_BINARY] = base64;
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375 break;
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376 }
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377
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378 default:
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379 throw OrthancException(ErrorCode_ParameterOutOfRange);
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380 }
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381 }
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382 }
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383 }
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384
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385
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386 void DicomWebJsonVisitor::VisitIntegers(const std::vector<DicomTag>& parentTags,
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387 const std::vector<size_t>& parentIndexes,
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388 const DicomTag& tag,
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389 ValueRepresentation vr,
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390 const std::vector<int64_t>& values)
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391 {
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392 if (tag.GetElement() != 0x0000 &&
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393 vr != ValueRepresentation_NotSupported)
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394 {
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395 Json::Value& node = CreateNode(parentTags, parentIndexes, tag);
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396 node[KEY_VR] = EnumerationToString(vr);
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397
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398 if (!values.empty())
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399 {
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400 Json::Value content = Json::arrayValue;
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401 for (size_t i = 0; i < values.size(); i++)
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402 {
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403 content.append(FormatInteger(values[i]));
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404 }
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405
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406 node[KEY_VALUE] = content;
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407 }
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408 }
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409 }
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410
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411 void DicomWebJsonVisitor::VisitDoubles(const std::vector<DicomTag>& parentTags,
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412 const std::vector<size_t>& parentIndexes,
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413 const DicomTag& tag,
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414 ValueRepresentation vr,
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415 const std::vector<double>& values)
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416 {
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417 if (tag.GetElement() != 0x0000 &&
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418 vr != ValueRepresentation_NotSupported)
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419 {
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420 Json::Value& node = CreateNode(parentTags, parentIndexes, tag);
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421 node[KEY_VR] = EnumerationToString(vr);
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422
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423 if (!values.empty())
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424 {
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425 Json::Value content = Json::arrayValue;
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426 for (size_t i = 0; i < values.size(); i++)
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427 {
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428 content.append(FormatDouble(values[i]));
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429 }
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430
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431 node[KEY_VALUE] = content;
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432 }
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433 }
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434 }
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435
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436
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437 void DicomWebJsonVisitor::VisitAttributes(const std::vector<DicomTag>& parentTags,
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438 const std::vector<size_t>& parentIndexes,
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439 const DicomTag& tag,
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440 const std::vector<DicomTag>& values)
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441 {
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442 if (tag.GetElement() != 0x0000)
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443 {
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444 Json::Value& node = CreateNode(parentTags, parentIndexes, tag);
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445 node[KEY_VR] = EnumerationToString(ValueRepresentation_AttributeTag);
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446
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447 if (!values.empty())
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448 {
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449 Json::Value content = Json::arrayValue;
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450 for (size_t i = 0; i < values.size(); i++)
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451 {
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452 content.append(FormatTag(values[i]));
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453 }
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454
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455 node[KEY_VALUE] = content;
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456 }
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457 }
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458 }
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459
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460
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461 ITagVisitor::Action
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462 DicomWebJsonVisitor::VisitString(std::string& newValue,
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463 const std::vector<DicomTag>& parentTags,
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464 const std::vector<size_t>& parentIndexes,
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465 const DicomTag& tag,
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466 ValueRepresentation vr,
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467 const std::string& value)
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468 {
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469 if (tag.GetElement() == 0x0000 ||
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470 vr == ValueRepresentation_NotSupported)
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471 {
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472 return Action_None;
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473 }
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474 else
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475 {
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476 Json::Value& node = CreateNode(parentTags, parentIndexes, tag);
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477 node[KEY_VR] = EnumerationToString(vr);
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478
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479 if (tag == DICOM_TAG_SPECIFIC_CHARACTER_SET)
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480 {
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481 // TODO - The JSON file has an UTF-8 encoding, thus DCMTK
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482 // replaces the specific character set with "ISO_IR 192"
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483 // (UNICODE UTF-8). It is unclear whether the source
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484 // character set should be kept: We thus mimic DCMTK.
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485 node[KEY_VALUE].append("ISO_IR 192");
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486 }
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487 else
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488 {
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489 std::string truncated;
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490
|
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491 if (!value.empty() &&
|
|
492 value[value.size() - 1] == '\0')
|
|
493 {
|
|
494 truncated = value.substr(0, value.size() - 1);
|
|
495 }
|
|
496 else
|
|
497 {
|
|
498 truncated = value;
|
|
499 }
|
|
500
|
|
501 if (!truncated.empty())
|
|
502 {
|
|
503 std::vector<std::string> tokens;
|
|
504 Toolbox::TokenizeString(tokens, truncated, '\\');
|
|
505
|
|
506 node[KEY_VALUE] = Json::arrayValue;
|
|
507 for (size_t i = 0; i < tokens.size(); i++)
|
|
508 {
|
|
509 try
|
|
510 {
|
|
511 switch (vr)
|
|
512 {
|
|
513 case ValueRepresentation_PersonName:
|
|
514 {
|
|
515 Json::Value value = Json::objectValue;
|
|
516 if (!tokens[i].empty())
|
|
517 {
|
|
518 value[KEY_ALPHABETIC] = tokens[i];
|
|
519 }
|
|
520 node[KEY_VALUE].append(value);
|
|
521 break;
|
|
522 }
|
|
523
|
|
524 case ValueRepresentation_IntegerString:
|
|
525 if (tokens[i].empty())
|
|
526 {
|
|
527 node[KEY_VALUE].append(Json::nullValue);
|
|
528 }
|
|
529 else
|
|
530 {
|
|
531 int64_t value = boost::lexical_cast<int64_t>(tokens[i]);
|
|
532 node[KEY_VALUE].append(FormatInteger(value));
|
|
533 }
|
|
534
|
|
535 break;
|
|
536
|
|
537 case ValueRepresentation_DecimalString:
|
|
538 if (tokens[i].empty())
|
|
539 {
|
|
540 node[KEY_VALUE].append(Json::nullValue);
|
|
541 }
|
|
542 else
|
|
543 {
|
|
544 double value = boost::lexical_cast<double>(tokens[i]);
|
|
545 node[KEY_VALUE].append(FormatDouble(value));
|
|
546 }
|
|
547 break;
|
|
548
|
|
549 default:
|
|
550 if (tokens[i].empty())
|
|
551 {
|
|
552 node[KEY_VALUE].append(Json::nullValue);
|
|
553 }
|
|
554 else
|
|
555 {
|
|
556 node[KEY_VALUE].append(tokens[i]);
|
|
557 }
|
|
558
|
|
559 break;
|
|
560 }
|
|
561 }
|
|
562 catch (boost::bad_lexical_cast&)
|
|
563 {
|
|
564 throw OrthancException(ErrorCode_BadFileFormat);
|
|
565 }
|
|
566 }
|
|
567 }
|
|
568 }
|
|
569 }
|
|
570
|
|
571 return Action_None;
|
|
572 }
|
|
573 }
|