Mercurial > hg > orthanc
annotate OrthancFramework/Sources/DicomParsing/ParsedDicomDir.cpp @ 5746:afd421225eb4 find-refactoring-clean tip
WIP: started to implement IntegratedFind in SQLite
author | Alain Mazy <am@orthanc.team> |
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date | Fri, 30 Aug 2024 18:03:37 +0200 |
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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 * Copyright (C) 2017-2023 Osimis S.A., Belgium |
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6 * Copyright (C) 2024-2024 Orthanc Team SRL, Belgium |
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7 * Copyright (C) 2021-2024 Sebastien Jodogne, ICTEAM UCLouvain, Belgium |
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8 * |
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9 * This program is free software: you can redistribute it and/or |
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10 * modify it under the terms of the GNU Lesser General Public License |
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11 * as published by the Free Software Foundation, either version 3 of |
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12 * the License, or (at your option) any later version. |
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13 * |
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14 * This program is distributed in the hope that it will be useful, but |
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15 * WITHOUT ANY WARRANTY; without even the implied warranty of |
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16 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
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17 * Lesser General Public License for more details. |
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18 * |
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19 * You should have received a copy of the GNU Lesser General Public |
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20 * License along with this program. If not, see |
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21 * <http://www.gnu.org/licenses/>. |
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22 **/ |
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23 |
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24 |
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25 #include "../PrecompiledHeaders.h" |
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26 #include "ParsedDicomDir.h" |
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27 |
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28 #include "../Compatibility.h" |
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29 #include "../OrthancException.h" |
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30 #include "ParsedDicomFile.h" |
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31 #include "FromDcmtkBridge.h" |
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32 |
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33 #include <dcmtk/dcmdata/dcdeftag.h> |
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34 |
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35 |
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36 namespace Orthanc |
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37 { |
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38 void ParsedDicomDir::Clear() |
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39 { |
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40 for (size_t i = 0; i < content_.size(); i++) |
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41 { |
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42 assert(content_[i] != NULL); |
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43 delete content_[i]; |
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44 } |
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45 } |
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46 |
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47 |
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48 bool ParsedDicomDir::LookupIndexOfOffset(size_t& target, |
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49 unsigned int offset) const |
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50 { |
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51 if (offset == 0) |
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52 { |
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53 return false; |
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54 } |
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55 |
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56 OffsetToIndex::const_iterator found = offsetToIndex_.find(offset); |
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57 if (found == offsetToIndex_.end()) |
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58 { |
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59 // Error in the algorithm that computes the offsets |
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60 throw OrthancException(ErrorCode_InternalError); |
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61 } |
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62 else |
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63 { |
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64 target = found->second; |
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65 return true; |
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66 } |
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67 } |
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68 |
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69 |
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71 { |
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72 ParsedDicomFile dicom(content); |
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73 |
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74 DcmSequenceOfItems* sequence = NULL; |
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75 if (dicom.GetDcmtkObject().getDataset() == NULL || |
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76 !dicom.GetDcmtkObject().getDataset()->findAndGetSequence(DCM_DirectoryRecordSequence, sequence).good() || |
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77 sequence == NULL) |
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78 { |
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79 throw OrthancException(ErrorCode_BadFileFormat, "Not a DICOMDIR"); |
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80 } |
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81 |
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82 content_.resize(sequence->card()); |
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83 nextOffsets_.resize(content_.size()); |
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84 lowerOffsets_.resize(content_.size()); |
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85 |
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86 // Manually reconstruct the list of all the available offsets of |
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87 // "DcmItem", as "fStartPosition" is a protected member in DCMTK |
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88 // API |
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89 std::set<uint32_t> availableOffsets; |
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90 availableOffsets.insert(0); |
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91 |
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92 |
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93 for (unsigned long i = 0; i < sequence->card(); i++) |
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94 { |
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95 DcmItem* item = sequence->getItem(i); |
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96 if (item == NULL) |
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97 { |
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98 Clear(); |
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99 throw OrthancException(ErrorCode_InternalError); |
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100 } |
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101 |
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103 if (!item->findAndGetUint32(DCM_OffsetOfTheNextDirectoryRecord, next).good() || |
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104 !item->findAndGetUint32(DCM_OffsetOfReferencedLowerLevelDirectoryEntity, lower).good()) |
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105 { |
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106 item->writeXML(std::cout); |
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107 throw OrthancException(ErrorCode_BadFileFormat, |
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108 "Missing offsets in DICOMDIR"); |
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109 } |
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110 |
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111 nextOffsets_[i] = next; |
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112 lowerOffsets_[i] = lower; |
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113 |
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114 std::unique_ptr<DicomMap> entry(new DicomMap); |
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115 |
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116 std::set<DicomTag> ignoreTagLength; |
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117 FromDcmtkBridge::ExtractDicomSummary(*entry, *item, 0 /* don't truncate tags */, ignoreTagLength); |
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118 |
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119 if (next != 0) |
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120 { |
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121 availableOffsets.insert(next); |
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122 } |
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123 |
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124 if (lower != 0) |
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125 { |
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126 availableOffsets.insert(lower); |
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127 } |
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128 |
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129 content_[i] = entry.release(); |
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130 } |
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131 |
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132 if (content_.size() != availableOffsets.size()) |
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133 { |
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134 throw OrthancException(ErrorCode_BadFileFormat, |
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135 "Inconsistent offsets in DICOMDIR"); |
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136 } |
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137 |
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138 unsigned int index = 0; |
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139 for (std::set<uint32_t>::const_iterator it = availableOffsets.begin(); |
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140 it != availableOffsets.end(); ++it) |
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141 { |
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142 offsetToIndex_[*it] = index; |
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143 index ++; |
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144 } |
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145 } |
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146 |
4297 | 147 ParsedDicomDir::~ParsedDicomDir() |
148 { | |
149 Clear(); | |
150 } | |
151 | |
152 size_t ParsedDicomDir::GetSize() const | |
153 { | |
154 return content_.size(); | |
155 } | |
156 | |
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157 |
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158 const DicomMap& ParsedDicomDir::GetItem(size_t i) const |
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159 { |
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160 if (i >= content_.size()) |
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161 { |
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162 throw OrthancException(ErrorCode_ParameterOutOfRange); |
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163 } |
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164 else |
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165 { |
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166 assert(content_[i] != NULL); |
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167 return *content_[i]; |
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168 } |
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169 } |
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170 |
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171 |
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172 bool ParsedDicomDir::LookupNext(size_t& target, |
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173 size_t index) const |
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174 { |
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175 if (index >= nextOffsets_.size()) |
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176 { |
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177 throw OrthancException(ErrorCode_ParameterOutOfRange); |
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178 } |
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179 else |
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180 { |
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181 return LookupIndexOfOffset(target, nextOffsets_[index]); |
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182 } |
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183 } |
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184 |
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185 |
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186 bool ParsedDicomDir::LookupLower(size_t& target, |
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187 size_t index) const |
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188 { |
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189 if (index >= lowerOffsets_.size()) |
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190 { |
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191 throw OrthancException(ErrorCode_ParameterOutOfRange); |
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192 } |
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193 else |
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194 { |
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195 return LookupIndexOfOffset(target, lowerOffsets_[index]); |
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196 } |
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197 } |
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198 } |