Mercurial > hg > orthanc

annotate Plugins/Samples/Common/SimplifiedOrthancDataset.cpp @ 2180:71b8bec8ca91

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improvements
author Sebastien Jodogne <s.jodogne@gmail.com>
date Fri, 25 Nov 2016 17:00:39 +0100
parents de32f3b4ff09
children 403d92d8df83
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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 namespace OrthancPlugins
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38 {
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39 const Json::Value* SimplifiedOrthancDataset::LookupPath(const DicomPath& path) const
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40 {
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41 const Json::Value* content = &root_;
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42
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43 for (unsigned int depth = 0; depth < path.GetPrefixLength(); depth++)
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44 {
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45 const char* name = path.GetPrefixTag(depth).GetName();
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46 if (content->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 if (!content->isMember(name))
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52 {
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53 return NULL;
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54 }
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55
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56 const Json::Value& sequence = (*content) [name];
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57 if (sequence.type() != Json::arrayValue)
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58 {
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59 ORTHANC_PLUGINS_THROW_EXCEPTION(OrthancPluginErrorCode_BadFileFormat);
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60 }
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61
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62 size_t index = path.GetPrefixIndex(depth);
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63 if (index >= sequence.size())
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64 {
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65 return NULL;
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66 }
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67 else
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68 {
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69 content = &sequence[static_cast<Json::Value::ArrayIndex>(index)];
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70 }
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71 }
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72
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73 const char* name = path.GetFinalTag().GetName();
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74
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75 if (content->type() != Json::objectValue)
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76 {
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77 ORTHANC_PLUGINS_THROW_EXCEPTION(OrthancPluginErrorCode_BadFileFormat);
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78 }
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79 if (!content->isMember(name))
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80 {
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81 return NULL;
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82 }
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83 else
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84 {
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85 return &((*content) [name]);
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86 }
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87 }
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88
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89
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90 void SimplifiedOrthancDataset::CheckRoot() const
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91 {
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92 if (root_.type() != Json::objectValue)
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93 {
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94 ORTHANC_PLUGINS_THROW_EXCEPTION(OrthancPluginErrorCode_BadFileFormat);
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95 }
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96 }
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97
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98
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99 SimplifiedOrthancDataset::SimplifiedOrthancDataset(IOrthancConnection& orthanc,
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100 const std::string& uri)
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101 {
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102 IOrthancConnection::RestApiGet(root_, orthanc, uri);
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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 SimplifiedOrthancDataset::SimplifiedOrthancDataset(const std::string& content)
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108 {
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109 IOrthancConnection::ParseJson(root_, content);
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110 CheckRoot();
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111 }
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112
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113
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114 bool SimplifiedOrthancDataset::GetStringValue(std::string& result,
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115 const DicomPath& path) const
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116 {
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117 const Json::Value* value = LookupPath(path);
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118
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119 if (value == NULL)
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120 {
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121 return false;
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122 }
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123 else if (value->type() != Json::stringValue)
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124 {
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125 ORTHANC_PLUGINS_THROW_EXCEPTION(OrthancPluginErrorCode_BadFileFormat);
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126 }
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127 else
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128 {
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129 result = value->asString();
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130 return true;
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131 }
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132 }
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133
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134
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135 bool SimplifiedOrthancDataset::GetSequenceSize(size_t& size,
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136 const DicomPath& path) const
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137 {
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138 const Json::Value* sequence = LookupPath(path);
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139
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140 if (sequence == NULL)
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141 {
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142 // Inexistent path
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143 return false;
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144 }
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145 else if (sequence->type() != Json::arrayValue)
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146 {
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147 // Not a sequence
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148 ORTHANC_PLUGINS_THROW_EXCEPTION(OrthancPluginErrorCode_BadFileFormat);
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149 }
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150 else
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151 {
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152 size = sequence->size();
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153 return true;
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154 }
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155 }
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156 }