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1504
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1 /**
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2 * Stone of Orthanc
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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) 2017-2020 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 Affero General Public License
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9 * as published by the Free Software Foundation, either version 3 of
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10 * the License, or (at your option) any later version.
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11 *
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12 * This program is distributed in the hope that it will be useful, but
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13 * WITHOUT ANY WARRANTY; without even the implied warranty of
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14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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15 * Affero General Public License for more details.
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16 *
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17 * You should have received a copy of the GNU Affero General Public License
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18 * along with this program. If not, see <http://www.gnu.org/licenses/>.
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19 **/
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20
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21
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22 #include "FullOrthancDataset.h"
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23
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24 #include <OrthancException.h>
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25
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26 #include <stdio.h>
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27 #include <cassert>
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28
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29 namespace OrthancStone
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30 {
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31 static const Json::Value* AccessTag(const Json::Value& dataset,
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32 const Orthanc::DicomTag& tag)
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33 {
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34 if (dataset.type() != Json::objectValue)
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35 {
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36 throw Orthanc::OrthancException(Orthanc::ErrorCode_BadFileFormat);
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37 }
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38
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39 char name[16];
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40 sprintf(name, "%04x,%04x", tag.GetGroup(), tag.GetElement());
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41
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42 if (!dataset.isMember(name))
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43 {
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44 return NULL;
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45 }
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46
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47 const Json::Value& value = dataset[name];
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48 if (value.type() != Json::objectValue ||
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49 !value.isMember("Name") ||
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50 !value.isMember("Type") ||
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51 !value.isMember("Value") ||
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52 value["Name"].type() != Json::stringValue ||
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53 value["Type"].type() != Json::stringValue)
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54 {
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55 throw Orthanc::OrthancException(Orthanc::ErrorCode_BadFileFormat);
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56 }
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57
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58 return &value;
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59 }
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60
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61
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62 static const Json::Value& GetSequenceContent(const Json::Value& sequence)
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63 {
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64 assert(sequence.type() == Json::objectValue);
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65 assert(sequence.isMember("Type"));
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66 assert(sequence.isMember("Value"));
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67
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68 const Json::Value& value = sequence["Value"];
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69
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70 if (sequence["Type"].asString() != "Sequence" ||
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71 value.type() != Json::arrayValue)
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72 {
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73 throw Orthanc::OrthancException(Orthanc::ErrorCode_BadFileFormat);
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74 }
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75 else
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76 {
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77 return value;
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78 }
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79 }
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80
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81
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82 static bool GetStringInternal(std::string& result,
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83 const Json::Value& tag)
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84 {
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85 assert(tag.type() == Json::objectValue);
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86 assert(tag.isMember("Type"));
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87 assert(tag.isMember("Value"));
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88
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89 const Json::Value& value = tag["Value"];
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90
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91 if (tag["Type"].asString() != "String" ||
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92 value.type() != Json::stringValue)
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93 {
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94 throw Orthanc::OrthancException(Orthanc::ErrorCode_BadFileFormat);
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95 }
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96 else
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97 {
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98 result = value.asString();
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99 return true;
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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 const Json::Value* FullOrthancDataset::LookupPath(const DicomPath& path) const
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105 {
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106 const Json::Value* content = &root_;
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107
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108 for (unsigned int depth = 0; depth < path.GetPrefixLength(); depth++)
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109 {
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110 const Json::Value* sequence = AccessTag(*content, path.GetPrefixTag(depth));
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111 if (sequence == NULL)
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112 {
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113 return NULL;
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114 }
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115
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116 const Json::Value& nextContent = GetSequenceContent(*sequence);
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117
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118 size_t index = path.GetPrefixIndex(depth);
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119 if (index >= nextContent.size())
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120 {
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121 return NULL;
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122 }
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123 else
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124 {
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125 content = &nextContent[static_cast<Json::Value::ArrayIndex>(index)];
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126 }
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127 }
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128
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129 return AccessTag(*content, path.GetFinalTag());
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130 }
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131
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132
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133 void FullOrthancDataset::CheckRoot() const
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134 {
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135 if (root_.type() != Json::objectValue)
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136 {
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137 throw Orthanc::OrthancException(Orthanc::ErrorCode_BadFileFormat);
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138 }
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139 }
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140
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141
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142 FullOrthancDataset::FullOrthancDataset(IOrthancConnection& orthanc,
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143 const std::string& uri)
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144 {
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145 IOrthancConnection::RestApiGet(root_, orthanc, uri);
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146 CheckRoot();
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147 }
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148
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149
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150 FullOrthancDataset::FullOrthancDataset(const std::string& content)
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151 {
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152 IOrthancConnection::ParseJson(root_, content);
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153 CheckRoot();
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154 }
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155
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156
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157 FullOrthancDataset::FullOrthancDataset(const void* content,
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158 size_t size)
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159 {
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160 IOrthancConnection::ParseJson(root_, content, size);
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161 CheckRoot();
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162 }
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163
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164
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165 FullOrthancDataset::FullOrthancDataset(const Json::Value& root) :
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166 root_(root)
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167 {
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168 CheckRoot();
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169 }
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170
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171
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172 bool FullOrthancDataset::GetStringValue(std::string& result,
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173 const DicomPath& path) const
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174 {
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175 const Json::Value* value = LookupPath(path);
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176
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177 if (value == NULL)
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178 {
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179 return false;
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180 }
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181 else
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182 {
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183 return GetStringInternal(result, *value);
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184 }
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185 }
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186
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187
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188 bool FullOrthancDataset::GetSequenceSize(size_t& size,
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189 const DicomPath& path) const
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190 {
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191 const Json::Value* sequence = LookupPath(path);
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192
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193 if (sequence == NULL)
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194 {
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195 return false;
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196 }
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197 else
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198 {
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199 size = GetSequenceContent(*sequence).size();
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200 return true;
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201 }
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202 }
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203 }
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