Mercurial > hg > orthanc
annotate Plugins/Samples/Common/SimplifiedOrthancDataset.cpp @ 2179:de32f3b4ff09
shared toolbox to access DICOM datasets from plugins
author | Sebastien Jodogne <s.jodogne@gmail.com> |
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date | Fri, 25 Nov 2016 16:11:44 +0100 |
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children | 71b8bec8ca91 |
rev | line source |
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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 * |
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6 * This program is free software: you can redistribute it and/or |
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7 * modify it under the terms of the GNU General Public License as |
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8 * published by the Free Software Foundation, either version 3 of the |
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9 * License, or (at your option) any later version. |
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10 * |
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11 * In addition, as a special exception, the copyright holders of this |
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12 * program give permission to link the code of its release with the |
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13 * OpenSSL project's "OpenSSL" library (or with modified versions of it |
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14 * that use the same license as the "OpenSSL" library), and distribute |
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15 * the linked executables. You must obey the GNU General Public License |
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16 * in all respects for all of the code used other than "OpenSSL". If you |
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17 * modify file(s) with this exception, you may extend this exception to |
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18 * your version of the file(s), but you are not obligated to do so. If |
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19 * you do not wish to do so, delete this exception statement from your |
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20 * version. If you delete this exception statement from all source files |
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21 * in the program, then also delete it here. |
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22 * |
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23 * This program is distributed in the hope that it will be useful, but |
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24 * WITHOUT ANY WARRANTY; without even the implied warranty of |
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25 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
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26 * General Public License for more details. |
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27 * |
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28 * You should have received a copy of the GNU General Public License |
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29 * along with this program. If not, see <http://www.gnu.org/licenses/>. |
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30 **/ |
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31 |
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32 |
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33 #include "SimplifiedOrthancDataset.h" |
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34 |
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35 #include "OrthancPluginCppWrapper.h" |
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36 |
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37 #include <json/reader.h> |
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38 |
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39 namespace OrthancPlugins |
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40 { |
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41 void SimplifiedOrthancDataset::Parse(const std::string& source) |
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42 { |
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43 Json::Reader reader; |
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44 |
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45 if (!reader.parse(source, root_) || |
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46 root_.type() != Json::objectValue) |
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47 { |
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48 ORTHANC_PLUGINS_THROW_EXCEPTION(OrthancPluginErrorCode_BadFileFormat); |
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49 } |
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50 } |
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51 |
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52 |
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53 const Json::Value* SimplifiedOrthancDataset::LookupPath(const DicomPath& path) const |
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54 { |
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55 const Json::Value* content = &root_; |
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56 |
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57 for (unsigned int depth = 0; depth < path.GetPrefixLength(); depth++) |
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58 { |
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59 const char* name = path.GetPrefixTag(depth).GetName(); |
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60 if (content->type() != Json::objectValue) |
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61 { |
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62 ORTHANC_PLUGINS_THROW_EXCEPTION(OrthancPluginErrorCode_BadFileFormat); |
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63 } |
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64 |
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65 if (!content->isMember(name)) |
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66 { |
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67 return NULL; |
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68 } |
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69 |
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70 const Json::Value& sequence = (*content) [name]; |
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71 if (sequence.type() != Json::arrayValue) |
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72 { |
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73 ORTHANC_PLUGINS_THROW_EXCEPTION(OrthancPluginErrorCode_BadFileFormat); |
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74 } |
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75 |
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76 size_t index = path.GetPrefixIndex(depth); |
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77 if (index >= sequence.size()) |
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78 { |
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79 return NULL; |
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80 } |
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81 else |
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82 { |
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83 content = &sequence[static_cast<Json::Value::ArrayIndex>(index)]; |
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84 } |
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85 } |
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86 |
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87 const char* name = path.GetFinalTag().GetName(); |
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88 |
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89 if (content->type() != Json::objectValue) |
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90 { |
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91 ORTHANC_PLUGINS_THROW_EXCEPTION(OrthancPluginErrorCode_BadFileFormat); |
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92 } |
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93 if (!content->isMember(name)) |
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94 { |
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95 return NULL; |
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96 } |
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97 else |
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98 { |
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99 return &((*content) [name]); |
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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 SimplifiedOrthancDataset::SimplifiedOrthancDataset(IOrthancConnection& orthanc, |
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105 const std::string& uri) |
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106 { |
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107 std::string content; |
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108 orthanc.RestApiGet(content, uri); |
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109 Parse(content); |
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110 } |
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111 |
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112 |
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113 bool SimplifiedOrthancDataset::GetStringValue(std::string& result, |
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114 const DicomPath& path) const |
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115 { |
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116 const Json::Value* value = LookupPath(path); |
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117 |
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118 if (value == NULL) |
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119 { |
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120 return false; |
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121 } |
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122 else if (value->type() != Json::stringValue) |
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123 { |
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124 ORTHANC_PLUGINS_THROW_EXCEPTION(OrthancPluginErrorCode_BadFileFormat); |
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125 } |
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126 else |
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127 { |
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128 result = value->asString(); |
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129 return true; |
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130 } |
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131 } |
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132 |
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133 |
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134 bool SimplifiedOrthancDataset::GetSequenceSize(size_t& size, |
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135 const DicomPath& path) const |
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136 { |
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137 const Json::Value* sequence = LookupPath(path); |
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138 |
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139 if (sequence == NULL) |
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140 { |
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141 // Inexistent path |
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142 return false; |
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143 } |
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144 else if (sequence->type() != Json::arrayValue) |
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145 { |
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146 // Not a sequence |
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147 ORTHANC_PLUGINS_THROW_EXCEPTION(OrthancPluginErrorCode_BadFileFormat); |
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148 } |
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149 else |
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150 { |
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151 size = sequence->size(); |
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152 return true; |
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153 } |
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154 } |
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155 } |