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annotate OrthancServer/Sources/Search/HierarchicalMatcher.cpp @ 4704:f0038043fb97 openssl-3.x

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removed OpenSSL license exception, as OpenSSL 3.0 was relicensed under Apache 2.0
author Sebastien Jodogne <s.jodogne@gmail.com>
date Tue, 22 Jun 2021 07:37:20 +0200
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1 /**
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2 * Orthanc - A Lightweight, RESTful DICOM Store
1900
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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) 2017-2021 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 General Public License as
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9 * published by the Free Software Foundation, either version 3 of the
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10 * 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 * 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 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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22 #include "../PrecompiledHeadersServer.h"
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23 #include "HierarchicalMatcher.h"
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24
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25 #include "../../../OrthancFramework/Sources/Logging.h"
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26 #include "../../../OrthancFramework/Sources/OrthancException.h"
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27 #include "../../../OrthancFramework/Sources/DicomParsing/FromDcmtkBridge.h"
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28 #include "../../../OrthancFramework/Sources/DicomParsing/ToDcmtkBridge.h"
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29 #include "../OrthancConfiguration.h"
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30
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31 #include <dcmtk/dcmdata/dcfilefo.h>
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32
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33 namespace Orthanc
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34 {
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35 HierarchicalMatcher::HierarchicalMatcher(ParsedDicomFile& query)
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36 {
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37 bool caseSensitivePN;
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38
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39 {
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40 OrthancConfiguration::ReaderLock lock;
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41 caseSensitivePN = lock.GetConfiguration().GetBooleanParameter("CaseSensitivePN", false);
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42 }
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43
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44 bool hasCodeExtensions;
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45 Encoding encoding = query.DetectEncoding(hasCodeExtensions);
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46 Setup(*query.GetDcmtkObject().getDataset(), caseSensitivePN, encoding, hasCodeExtensions);
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47 }
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48
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49
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50 HierarchicalMatcher::~HierarchicalMatcher()
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51 {
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52 for (Sequences::iterator it = sequences_.begin();
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53 it != sequences_.end(); ++it)
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54 {
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55 if (it->second != NULL)
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56 {
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57 delete it->second;
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58 }
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59 }
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60 }
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61
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62
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63 void HierarchicalMatcher::Setup(DcmItem& dataset,
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64 bool caseSensitivePN,
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65 Encoding encoding,
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66 bool hasCodeExtensions)
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67 {
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68 for (unsigned long i = 0; i < dataset.card(); i++)
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69 {
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70 DcmElement* element = dataset.getElement(i);
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71 if (element == NULL)
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72 {
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73 throw OrthancException(ErrorCode_InternalError);
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74 }
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75
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76 DicomTag tag(FromDcmtkBridge::Convert(element->getTag()));
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77 if (tag == DICOM_TAG_SPECIFIC_CHARACTER_SET || // Ignore encoding
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78 tag.GetElement() == 0x0000) // Ignore all "Group Length" tags
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79 {
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80 continue;
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81 }
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82
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83 if (flatTags_.find(tag) != flatTags_.end() ||
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84 sequences_.find(tag) != sequences_.end())
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85 {
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86 // A constraint already exists on this tag
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87 throw OrthancException(ErrorCode_BadRequest);
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88 }
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89
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90 if (FromDcmtkBridge::LookupValueRepresentation(tag) == ValueRepresentation_Sequence)
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91 {
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92 DcmSequenceOfItems& sequence = dynamic_cast<DcmSequenceOfItems&>(*element);
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93
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94 if (sequence.card() == 0 ||
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95 (sequence.card() == 1 && sequence.getItem(0)->card() == 0))
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96 {
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97 // Universal matching of a sequence
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98 sequences_[tag] = NULL;
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99 }
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100 else if (sequence.card() == 1)
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101 {
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102 sequences_[tag] = new HierarchicalMatcher(*sequence.getItem(0), caseSensitivePN, encoding, hasCodeExtensions);
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103 }
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104 else
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105 {
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106 throw OrthancException(ErrorCode_BadRequest);
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107 }
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108 }
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109 else
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110 {
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111 flatTags_.insert(tag);
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112
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113 std::set<DicomTag> ignoreTagLength;
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114 std::unique_ptr<DicomValue> value(FromDcmtkBridge::ConvertLeafElement
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115 (*element, DicomToJsonFlags_None,
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116 0, encoding, hasCodeExtensions, ignoreTagLength));
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117
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118 // WARNING: Also modify "DatabaseLookup::IsMatch()" if modifying this code
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119 if (value.get() == NULL ||
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120 value->IsNull())
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121 {
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122 // This is an universal constraint
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123 }
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124 else if (value->IsBinary())
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125 {
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126 if (!value->GetContent().empty())
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127 {
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128 LOG(WARNING) << "This C-Find modality worklist query contains a non-empty tag ("
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129 << tag.Format() << ") with UN (unknown) value representation. "
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130 << "It will be ignored.";
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131 }
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132 }
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133 else if (value->GetContent().empty())
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134 {
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135 // This is an universal matcher
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136 }
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137 else
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138 {
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139 flatConstraints_.AddDicomConstraint
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140 (tag, value->GetContent(), caseSensitivePN, true /* mandatory */);
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141 }
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142 }
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143 }
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144 }
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145
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146
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147 std::string HierarchicalMatcher::Format(const std::string& prefix) const
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148 {
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149 std::string s;
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150
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151 std::set<DicomTag> tags;
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152 for (size_t i = 0; i < flatConstraints_.GetConstraintsCount(); i++)
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153 {
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154 const DicomTagConstraint& c = flatConstraints_.GetConstraint(i);
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155
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156 s += c.Format() + "\n";
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157 tags.insert(c.GetTag());
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158 }
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159
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160 // Loop over the universal constraints
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161 for (std::set<DicomTag>::const_iterator it = flatTags_.begin();
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162 it != flatTags_.end(); ++it)
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163 {
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164 if (tags.find(*it) == tags.end())
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165 {
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166 s += prefix + it->Format() + " == *\n";
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167 }
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168 }
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169
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170 for (Sequences::const_iterator it = sequences_.begin();
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171 it != sequences_.end(); ++it)
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172 {
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173 s += prefix + it->first.Format() + " ";
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174
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175 if (it->second == NULL)
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176 {
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177 s += "*\n";
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178 }
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179 else
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180 {
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181 s += "Sequence:\n" + it->second->Format(prefix + " ");
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182 }
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183 }
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184
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185 return s;
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186 }
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187
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188
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189 bool HierarchicalMatcher::Match(ParsedDicomFile& dicom) const
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190 {
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191 bool hasCodeExtensions;
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192 Encoding encoding = dicom.DetectEncoding(hasCodeExtensions);
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193
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194 return MatchInternal(*dicom.GetDcmtkObject().getDataset(),
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195 encoding, hasCodeExtensions);
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196 }
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197
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198
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199 bool HierarchicalMatcher::MatchInternal(DcmItem& item,
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200 Encoding encoding,
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201 bool hasCodeExtensions) const
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202 {
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203 if (!flatConstraints_.IsMatch(item, encoding, hasCodeExtensions))
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204 {
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205 return false;
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206 }
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207
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208 for (Sequences::const_iterator it = sequences_.begin();
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209 it != sequences_.end(); ++it)
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210 {
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211 if (it->second != NULL)
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212 {
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213 DcmTagKey tag = ToDcmtkBridge::Convert(it->first);
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214
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215 DcmSequenceOfItems* sequence = NULL;
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216 if (!item.findAndGetSequence(tag, sequence).good() ||
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217 sequence == NULL)
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218 {
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219 continue;
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220 }
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221
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222 bool match = false;
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223
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224 for (unsigned long i = 0; i < sequence->card(); i++)
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225 {
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226 if (it->second->MatchInternal(*sequence->getItem(i), encoding, hasCodeExtensions))
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227 {
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228 match = true;
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229 break;
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230 }
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231 }
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232
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233 if (!match)
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234 {
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235 return false;
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236 }
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237 }
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238 }
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239
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240 return true;
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241 }
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242
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243
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244 DcmDataset* HierarchicalMatcher::ExtractInternal(DcmItem& source,
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245 Encoding encoding,
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246 bool hasCodeExtensions) const
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247 {
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248 std::unique_ptr<DcmDataset> target(new DcmDataset);
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249
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250 for (std::set<DicomTag>::const_iterator it = flatTags_.begin();
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251 it != flatTags_.end(); ++it)
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252 {
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253 DcmTagKey tag = ToDcmtkBridge::Convert(*it);
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254
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255 DcmElement* element = NULL;
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256 if (source.findAndGetElement(tag, element).good() &&
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257 element != NULL)
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258 {
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259 if (it->IsPrivate())
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260 {
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261 throw OrthancException(ErrorCode_NotImplemented,
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262 "Not applicable to private tags: " + it->Format());
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263 }
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264
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265 std::unique_ptr<DcmElement> cloned(FromDcmtkBridge::CreateElementForTag(*it, "" /* no private creator */));
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266 cloned->copyFrom(*element);
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267 target->insert(cloned.release());
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268 }
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269 }
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270
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271 for (Sequences::const_iterator it = sequences_.begin();
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272 it != sequences_.end(); ++it)
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273 {
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274 DcmTagKey tag = ToDcmtkBridge::Convert(it->first);
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275
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276 DcmSequenceOfItems* sequence = NULL;
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277 if (source.findAndGetSequence(tag, sequence).good() &&
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278 sequence != NULL)
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279 {
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280 std::unique_ptr<DcmSequenceOfItems> cloned(new DcmSequenceOfItems(tag));
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281
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282 for (unsigned long i = 0; i < sequence->card(); i++)
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283 {
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284 if (it->second == NULL)
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285 {
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286 cloned->append(new DcmItem(*sequence->getItem(i)));
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287 }
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288 else if (it->second->MatchInternal(*sequence->getItem(i), encoding, hasCodeExtensions)) // TODO Might be optimized
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289 {
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290 // It is necessary to encapsulate the child dataset into a
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291 // "DcmItem" object before it can be included in a
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292 // sequence. Otherwise, "dciodvfy" reports an error "Bad
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293 // tag in sequence - Expecting Item or Sequence Delimiter."
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294 std::unique_ptr<DcmDataset> child(it->second->ExtractInternal(*sequence->getItem(i), encoding, hasCodeExtensions));
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295 cloned->append(new DcmItem(*child));
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296 }
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297 }
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298
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299 target->insert(cloned.release());
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300 }
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301 }
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302
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303 return target.release();
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304 }
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305
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306
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307 ParsedDicomFile* HierarchicalMatcher::Extract(ParsedDicomFile& dicom) const
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308 {
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309 bool hasCodeExtensions;
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310 Encoding encoding = dicom.DetectEncoding(hasCodeExtensions);
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311
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312 std::unique_ptr<DcmDataset> dataset(ExtractInternal(*dicom.GetDcmtkObject().getDataset(),
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313 encoding, hasCodeExtensions));
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314
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315 std::unique_ptr<ParsedDicomFile> result(new ParsedDicomFile(*dataset));
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316 result->SetEncoding(encoding);
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317
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318 return result.release();
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319 }
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320 }