Mercurial > hg > orthanc
annotate Plugins/Samples/Common/FullOrthancDataset.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 "FullOrthancDataset.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 FullOrthancDataset::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 static const Json::Value* AccessTag(const Json::Value& dataset, |
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54 const DicomTag& tag) |
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55 { |
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56 if (dataset.type() != Json::objectValue) |
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57 { |
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58 ORTHANC_PLUGINS_THROW_EXCEPTION(OrthancPluginErrorCode_BadFileFormat); |
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59 } |
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60 |
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61 char name[16]; |
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62 sprintf(name, "%04x,%04x", tag.GetGroup(), tag.GetElement()); |
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63 |
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64 if (!dataset.isMember(name)) |
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65 { |
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66 return NULL; |
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67 } |
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68 |
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69 const Json::Value& value = dataset[name]; |
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70 if (value.type() != Json::objectValue || |
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71 !value.isMember("Name") || |
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72 !value.isMember("Type") || |
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73 !value.isMember("Value") || |
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74 value["Name"].type() != Json::stringValue || |
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75 value["Type"].type() != Json::stringValue) |
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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 |
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80 return &value; |
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81 } |
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82 |
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83 |
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84 static const Json::Value& GetSequenceContent(const Json::Value& sequence) |
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85 { |
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86 assert(sequence.type() == Json::objectValue); |
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87 assert(sequence.isMember("Type")); |
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88 assert(sequence.isMember("Value")); |
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89 |
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90 const Json::Value& value = sequence["Value"]; |
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91 |
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92 if (sequence["Type"].asString() != "Sequence" || |
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93 value.type() != Json::arrayValue) |
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94 { |
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95 ORTHANC_PLUGINS_THROW_EXCEPTION(OrthancPluginErrorCode_BadFileFormat); |
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96 } |
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97 else |
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98 { |
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99 return value; |
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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 static bool GetStringInternal(std::string& result, |
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105 const Json::Value& tag) |
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106 { |
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107 assert(tag.type() == Json::objectValue); |
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108 assert(tag.isMember("Type")); |
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109 assert(tag.isMember("Value")); |
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110 |
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111 const Json::Value& value = tag["Value"]; |
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112 |
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113 if (tag["Type"].asString() != "String" || |
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114 value.type() != Json::stringValue) |
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115 { |
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116 ORTHANC_PLUGINS_THROW_EXCEPTION(OrthancPluginErrorCode_BadFileFormat); |
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117 } |
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118 else |
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119 { |
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120 result = value.asString(); |
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121 return true; |
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122 } |
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123 } |
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124 |
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125 |
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126 const Json::Value* FullOrthancDataset::LookupPath(const DicomPath& path) const |
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127 { |
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128 const Json::Value* content = &root_; |
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129 |
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130 for (unsigned int depth = 0; depth < path.GetPrefixLength(); depth++) |
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131 { |
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132 const Json::Value* sequence = AccessTag(*content, path.GetPrefixTag(depth)); |
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133 if (sequence == NULL) |
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134 { |
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135 return NULL; |
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136 } |
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137 |
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138 const Json::Value& nextContent = GetSequenceContent(*sequence); |
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139 |
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140 size_t index = path.GetPrefixIndex(depth); |
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141 if (index >= nextContent.size()) |
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142 { |
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143 return NULL; |
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144 } |
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145 else |
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146 { |
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147 content = &nextContent[static_cast<Json::Value::ArrayIndex>(index)]; |
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148 } |
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149 } |
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150 |
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151 return AccessTag(*content, path.GetFinalTag()); |
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152 } |
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153 |
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154 |
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155 FullOrthancDataset::FullOrthancDataset(IOrthancConnection& orthanc, |
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156 const std::string& uri) |
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157 { |
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158 std::string content; |
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159 orthanc.RestApiGet(content, uri); |
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160 Parse(content); |
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161 } |
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162 |
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163 |
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164 bool FullOrthancDataset::GetStringValue(std::string& result, |
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165 const DicomPath& path) const |
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166 { |
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167 const Json::Value* value = LookupPath(path); |
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168 |
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169 if (value == NULL) |
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170 { |
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171 return false; |
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172 } |
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173 else |
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174 { |
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175 return GetStringInternal(result, *value); |
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176 } |
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177 } |
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178 |
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179 |
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180 bool FullOrthancDataset::GetSequenceSize(size_t& size, |
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181 const DicomPath& path) const |
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182 { |
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183 const Json::Value* sequence = LookupPath(path); |
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184 |
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185 if (sequence == NULL) |
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186 { |
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187 return false; |
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188 } |
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189 else |
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190 { |
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191 size = GetSequenceContent(*sequence).size(); |
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192 return true; |
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193 } |
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194 } |
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195 } |