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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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1571
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24 #include <OrthancException.h>
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25 #include <DicomParsing/FromDcmtkBridge.h>
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26
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1504
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27 namespace OrthancStone
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28 {
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29 const Json::Value* SimplifiedOrthancDataset::LookupPath(const DicomPath& path) const
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30 {
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31 const Json::Value* content = &root_;
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32
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33 for (unsigned int depth = 0; depth < path.GetPrefixLength(); depth++)
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34 {
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1571
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35 const std::string name = Orthanc::FromDcmtkBridge::GetTagName(
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36 path.GetPrefixTag(depth), "" /* no private creator */);
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1504
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37 if (content->type() != Json::objectValue)
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38 {
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39 throw Orthanc::OrthancException(Orthanc::ErrorCode_BadFileFormat);
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40 }
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41
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42 if (!content->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& sequence = (*content) [name];
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48 if (sequence.type() != Json::arrayValue)
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49 {
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50 throw Orthanc::OrthancException(Orthanc::ErrorCode_BadFileFormat);
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51 }
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52
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53 size_t index = path.GetPrefixIndex(depth);
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54 if (index >= sequence.size())
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55 {
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56 return NULL;
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57 }
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58 else
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59 {
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60 content = &sequence[static_cast<Json::Value::ArrayIndex>(index)];
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61 }
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62 }
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63
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64 const std::string name = Orthanc::FromDcmtkBridge::GetTagName(
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65 path.GetFinalTag(), "" /* no private creator */);
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1504
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66
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67 if (content->type() != Json::objectValue)
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68 {
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69 throw Orthanc::OrthancException(Orthanc::ErrorCode_BadFileFormat);
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70 }
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71 if (!content->isMember(name))
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72 {
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73 return NULL;
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74 }
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75 else
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76 {
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77 return &((*content) [name]);
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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 void SimplifiedOrthancDataset::CheckRoot() const
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83 {
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84 if (root_.type() != Json::objectValue)
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85 {
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86 throw Orthanc::OrthancException(Orthanc::ErrorCode_BadFileFormat);
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87 }
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88 }
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89
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90
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91 SimplifiedOrthancDataset::SimplifiedOrthancDataset(IOrthancConnection& orthanc,
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92 const std::string& uri)
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93 {
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94 IOrthancConnection::RestApiGet(root_, orthanc, uri);
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95 CheckRoot();
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96 }
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97
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98
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99 SimplifiedOrthancDataset::SimplifiedOrthancDataset(const std::string& content)
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100 {
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101 IOrthancConnection::ParseJson(root_, content);
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102 CheckRoot();
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103 }
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104
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105
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106 bool SimplifiedOrthancDataset::GetStringValue(std::string& result,
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107 const DicomPath& path) const
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108 {
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109 const Json::Value* value = LookupPath(path);
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110
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111 if (value == NULL)
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112 {
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113 return false;
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114 }
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115 else if (value->type() != Json::stringValue)
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116 {
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117 throw Orthanc::OrthancException(Orthanc::ErrorCode_BadFileFormat);
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118 }
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119 else
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120 {
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121 result = value->asString();
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122 return true;
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123 }
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124 }
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125
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126
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127 bool SimplifiedOrthancDataset::GetSequenceSize(size_t& size,
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128 const DicomPath& path) const
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129 {
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130 const Json::Value* sequence = LookupPath(path);
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131
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132 if (sequence == NULL)
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133 {
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134 // Inexistent path
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135 return false;
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136 }
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137 else if (sequence->type() != Json::arrayValue)
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138 {
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139 // Not a sequence
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140 throw Orthanc::OrthancException(Orthanc::ErrorCode_BadFileFormat);
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141 }
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142 else
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143 {
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144 size = sequence->size();
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145 return true;
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146 }
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147 }
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148 }
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