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 "SimplifiedOrthancDataset.h"
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23
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24 namespace OrthancStone
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25 {
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26 const Json::Value* SimplifiedOrthancDataset::LookupPath(const DicomPath& path) const
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27 {
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28 const Json::Value* content = &root_;
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29
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30 for (unsigned int depth = 0; depth < path.GetPrefixLength(); depth++)
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31 {
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32 const char* name = path.GetPrefixTag(depth).GetName();
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33 if (content->type() != Json::objectValue)
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34 {
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35 throw Orthanc::OrthancException(Orthanc::ErrorCode_BadFileFormat);
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36 }
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37
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38 if (!content->isMember(name))
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39 {
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40 return NULL;
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41 }
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42
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43 const Json::Value& sequence = (*content) [name];
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44 if (sequence.type() != Json::arrayValue)
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45 {
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46 throw Orthanc::OrthancException(Orthanc::ErrorCode_BadFileFormat);
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47 }
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48
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49 size_t index = path.GetPrefixIndex(depth);
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50 if (index >= sequence.size())
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51 {
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52 return NULL;
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53 }
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54 else
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55 {
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56 content = &sequence[static_cast<Json::Value::ArrayIndex>(index)];
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57 }
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58 }
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59
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60 const char* name = path.GetFinalTag().GetName();
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61
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62 if (content->type() != Json::objectValue)
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63 {
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64 throw Orthanc::OrthancException(Orthanc::ErrorCode_BadFileFormat);
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65 }
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66 if (!content->isMember(name))
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67 {
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68 return NULL;
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69 }
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70 else
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71 {
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72 return &((*content) [name]);
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73 }
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74 }
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75
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76
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77 void SimplifiedOrthancDataset::CheckRoot() const
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78 {
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79 if (root_.type() != Json::objectValue)
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80 {
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81 throw Orthanc::OrthancException(Orthanc::ErrorCode_BadFileFormat);
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82 }
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83 }
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84
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85
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86 SimplifiedOrthancDataset::SimplifiedOrthancDataset(IOrthancConnection& orthanc,
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87 const std::string& uri)
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88 {
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89 IOrthancConnection::RestApiGet(root_, orthanc, uri);
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90 CheckRoot();
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91 }
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92
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93
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94 SimplifiedOrthancDataset::SimplifiedOrthancDataset(const std::string& content)
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95 {
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96 IOrthancConnection::ParseJson(root_, content);
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97 CheckRoot();
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98 }
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99
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100
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101 bool SimplifiedOrthancDataset::GetStringValue(std::string& result,
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102 const DicomPath& path) const
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103 {
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104 const Json::Value* value = LookupPath(path);
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105
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106 if (value == NULL)
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107 {
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108 return false;
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109 }
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110 else if (value->type() != Json::stringValue)
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111 {
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112 throw Orthanc::OrthancException(Orthanc::ErrorCode_BadFileFormat);
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113 }
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114 else
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115 {
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116 result = value->asString();
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117 return true;
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118 }
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119 }
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120
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121
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122 bool SimplifiedOrthancDataset::GetSequenceSize(size_t& size,
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123 const DicomPath& path) const
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124 {
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125 const Json::Value* sequence = LookupPath(path);
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126
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127 if (sequence == NULL)
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128 {
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129 // Inexistent path
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130 return false;
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131 }
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132 else if (sequence->type() != Json::arrayValue)
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133 {
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134 // Not a sequence
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135 throw Orthanc::OrthancException(Orthanc::ErrorCode_BadFileFormat);
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136 }
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137 else
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138 {
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139 size = sequence->size();
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140 return true;
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141 }
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142 }
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143 }
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