annotate OrthancStone/Sources/Toolbox/OrthancDatasets/SimplifiedOrthancDataset.cpp @ 1664:32e765ca7193

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author Sebastien Jodogne <s.jodogne@gmail.com>
date Thu, 19 Nov 2020 12:15:21 +0100
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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 Lesser 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 * Lesser 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 Lesser General Public
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18 * License along with this program. If not, see
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19 * <http://www.gnu.org/licenses/>.
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20 **/
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21
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22
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23 #include "SimplifiedOrthancDataset.h"
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24
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25 #include <OrthancException.h>
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26 #include <DicomParsing/FromDcmtkBridge.h>
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27
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28 namespace OrthancStone
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29 {
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30 const Json::Value* SimplifiedOrthancDataset::LookupPath(const DicomPath& path) const
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31 {
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32 const Json::Value* content = &root_;
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33
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34 for (unsigned int depth = 0; depth < path.GetPrefixLength(); depth++)
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35 {
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36 const std::string name = Orthanc::FromDcmtkBridge::GetTagName(
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37 path.GetPrefixTag(depth), "" /* no private creator */);
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38 if (content->type() != Json::objectValue)
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39 {
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40 throw Orthanc::OrthancException(Orthanc::ErrorCode_BadFileFormat);
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41 }
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42
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43 if (!content->isMember(name))
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44 {
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45 return NULL;
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46 }
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47
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48 const Json::Value& sequence = (*content) [name];
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49 if (sequence.type() != Json::arrayValue)
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50 {
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51 throw Orthanc::OrthancException(Orthanc::ErrorCode_BadFileFormat);
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52 }
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53
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54 size_t index = path.GetPrefixIndex(depth);
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55 if (index >= sequence.size())
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56 {
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57 return NULL;
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58 }
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59 else
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60 {
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61 content = &sequence[static_cast<Json::Value::ArrayIndex>(index)];
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62 }
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63 }
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64
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65 const std::string name = Orthanc::FromDcmtkBridge::GetTagName(
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66 path.GetFinalTag(), "" /* no private creator */);
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67
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68 if (content->type() != Json::objectValue)
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69 {
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70 throw Orthanc::OrthancException(Orthanc::ErrorCode_BadFileFormat);
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71 }
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72 if (!content->isMember(name))
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73 {
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74 return NULL;
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75 }
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76 else
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77 {
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78 return &((*content) [name]);
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79 }
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80 }
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81
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82
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83 void SimplifiedOrthancDataset::CheckRoot() const
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84 {
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85 if (root_.type() != Json::objectValue)
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86 {
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87 throw Orthanc::OrthancException(Orthanc::ErrorCode_BadFileFormat);
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88 }
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89 }
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90
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91
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92 SimplifiedOrthancDataset::SimplifiedOrthancDataset(IOrthancConnection& orthanc,
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93 const std::string& uri)
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94 {
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95 IOrthancConnection::RestApiGet(root_, orthanc, uri);
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96 CheckRoot();
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97 }
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98
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99
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100 SimplifiedOrthancDataset::SimplifiedOrthancDataset(const std::string& content)
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101 {
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102 IOrthancConnection::ParseJson(root_, content);
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103 CheckRoot();
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104 }
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105
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106
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107 bool SimplifiedOrthancDataset::GetStringValue(std::string& result,
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108 const DicomPath& path) const
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109 {
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110 const Json::Value* value = LookupPath(path);
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111
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112 if (value == NULL)
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113 {
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114 return false;
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115 }
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116 else if (value->type() != Json::stringValue)
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117 {
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118 throw Orthanc::OrthancException(Orthanc::ErrorCode_BadFileFormat);
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119 }
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120 else
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121 {
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122 result = value->asString();
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123 return true;
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124 }
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125 }
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126
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127
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128 bool SimplifiedOrthancDataset::GetSequenceSize(size_t& size,
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129 const DicomPath& path) const
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130 {
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131 const Json::Value* sequence = LookupPath(path);
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132
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133 if (sequence == NULL)
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134 {
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135 // Inexistent path
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136 return false;
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137 }
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138 else if (sequence->type() != Json::arrayValue)
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139 {
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140 // Not a sequence
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141 throw Orthanc::OrthancException(Orthanc::ErrorCode_BadFileFormat);
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142 }
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143 else
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144 {
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145 size = sequence->size();
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146 return true;
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147 }
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148 }
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149 }