Mercurial > hg > orthanc

annotate OrthancServer/OrthancRestApi/OrthancRestArchive.cpp @ 1312:b82a3c05b66b

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author Sebastien Jodogne <s.jodogne@gmail.com>
date Wed, 11 Feb 2015 11:08:39 +0100
parents bba8a47922d1
children 0c735fed8953
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1 /**
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2 * Orthanc - A Lightweight, RESTful DICOM Store
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3 * Copyright (C) 2012-2015 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 "../PrecompiledHeadersServer.h"
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34 #include "OrthancRestApi.h"
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35
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36 #include "../DicomDirWriter.h"
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37 #include "../../Core/Compression/HierarchicalZipWriter.h"
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38 #include "../../Core/HttpServer/FilesystemHttpSender.h"
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39 #include "../../Core/Uuid.h"
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40
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41 #include <glog/logging.h>
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42 #include <stdio.h>
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43
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44 #if defined(_MSC_VER)
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45 #define snprintf _snprintf
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46 #endif
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47
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48 static const uint64_t MEGA_BYTES = 1024 * 1024;
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49 static const uint64_t GIGA_BYTES = 1024 * 1024 * 1024;
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50
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51 namespace Orthanc
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52 {
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53 // Download of ZIP files ----------------------------------------------------
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54
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55 static std::string GetDirectoryNameInArchive(const Json::Value& resource,
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56 ResourceType resourceType)
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57 {
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58 std::string s;
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59
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60 switch (resourceType)
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61 {
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62 case ResourceType_Patient:
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63 {
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64 std::string p = resource["MainDicomTags"]["PatientID"].asString();
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65 std::string n = resource["MainDicomTags"]["PatientName"].asString();
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66 s = p + " " + n;
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67 break;
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68 }
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69
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70 case ResourceType_Study:
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71 {
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72 s = resource["MainDicomTags"]["StudyDescription"].asString();
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73 break;
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74 }
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75
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76 case ResourceType_Series:
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77 {
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78 std::string d = resource["MainDicomTags"]["SeriesDescription"].asString();
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79 std::string m = resource["MainDicomTags"]["Modality"].asString();
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80 s = m + " " + d;
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81 break;
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82 }
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83
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84 default:
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85 throw OrthancException(ErrorCode_InternalError);
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86 }
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87
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88 // Get rid of special characters
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89 return Toolbox::ConvertToAscii(s);
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90 }
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91
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92 static bool CreateRootDirectoryInArchive(HierarchicalZipWriter& writer,
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93 ServerContext& context,
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94 const Json::Value& resource,
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95 ResourceType resourceType)
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96 {
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97 if (resourceType == ResourceType_Patient)
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98 {
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99 return true;
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100 }
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101
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102 ResourceType parentType = GetParentResourceType(resourceType);
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103 Json::Value parent;
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104
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105 switch (resourceType)
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106 {
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107 case ResourceType_Study:
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108 {
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109 if (!context.GetIndex().LookupResource(parent, resource["ParentPatient"].asString(), parentType))
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110 {
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111 return false;
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112 }
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113
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114 break;
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115 }
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116
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117 case ResourceType_Series:
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118 if (!context.GetIndex().LookupResource(parent, resource["ParentStudy"].asString(), parentType) ||
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119 !CreateRootDirectoryInArchive(writer, context, parent, parentType))
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120 {
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121 return false;
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122 }
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123 break;
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124
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125 default:
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126 throw OrthancException(ErrorCode_NotImplemented);
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127 }
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128
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129 writer.OpenDirectory(GetDirectoryNameInArchive(parent, parentType).c_str());
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130 return true;
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131 }
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132
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133 static bool ArchiveInstance(HierarchicalZipWriter& writer,
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134 ServerContext& context,
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135 const std::string& instancePublicId,
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136 const char* filename)
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137 {
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138 writer.OpenFile(filename);
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diff changeset
139
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diff changeset
140 std::string dicom;
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diff changeset
141 context.ReadFile(dicom, instancePublicId, FileContentType_Dicom);
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142 writer.Write(dicom);
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diff changeset
143
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144 return true;
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145 }
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diff changeset
146
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147 static bool ArchiveInternal(HierarchicalZipWriter& writer,
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148 ServerContext& context,
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149 const std::string& publicId,
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150 ResourceType resourceType,
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151 bool isFirstLevel)
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152 {
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153 Json::Value resource;
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154 if (!context.GetIndex().LookupResource(resource, publicId, resourceType))
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155 {
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156 return false;
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157 }
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158
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159 if (isFirstLevel &&
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160 !CreateRootDirectoryInArchive(writer, context, resource, resourceType))
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161 {
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162 return false;
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163 }
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164
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165 writer.OpenDirectory(GetDirectoryNameInArchive(resource, resourceType).c_str());
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166
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167 switch (resourceType)
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168 {
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169 case ResourceType_Patient:
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170 for (Json::Value::ArrayIndex i = 0; i < resource["Studies"].size(); i++)
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171 {
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172 std::string studyId = resource["Studies"][i].asString();
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173 if (!ArchiveInternal(writer, context, studyId, ResourceType_Study, false))
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174 {
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175 return false;
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176 }
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177 }
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178 break;
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179
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180 case ResourceType_Study:
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181 for (Json::Value::ArrayIndex i = 0; i < resource["Series"].size(); i++)
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182 {
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183 std::string seriesId = resource["Series"][i].asString();
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184 if (!ArchiveInternal(writer, context, seriesId, ResourceType_Series, false))
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185 {
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186 return false;
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187 }
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188 }
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189 break;
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190
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191 case ResourceType_Series:
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192 {
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193 // Create a filename prefix, depending on the modality
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194 char format[16] = "%08d";
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195
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196 if (resource["MainDicomTags"].isMember("Modality"))
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197 {
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198 std::string modality = resource["MainDicomTags"]["Modality"].asString();
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199
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200 if (modality.size() == 1)
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201 {
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202 snprintf(format, sizeof(format) - 1, "%c%%07d", toupper(modality[0]));
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203 }
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204 else if (modality.size() >= 2)
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diff changeset
205 {
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diff changeset
206 snprintf(format, sizeof(format) - 1, "%c%c%%06d", toupper(modality[0]), toupper(modality[1]));
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207 }
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diff changeset
208 }
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diff changeset
209
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diff changeset
210 char filename[16];
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diff changeset
211
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diff changeset
212 for (Json::Value::ArrayIndex i = 0; i < resource["Instances"].size(); i++)
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diff changeset
213 {
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diff changeset
214 snprintf(filename, sizeof(filename) - 1, format, i);
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diff changeset
215
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diff changeset
216 std::string publicId = resource["Instances"][i].asString();
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diff changeset
217
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218 // This was the implementation up to Orthanc 0.7.0:
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diff changeset
219 // std::string filename = instance["MainDicomTags"]["SOPInstanceUID"].asString() + ".dcm";
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diff changeset
220
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diff changeset
221 if (!ArchiveInstance(writer, context, publicId, filename))
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parents:
diff changeset
222 {
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diff changeset
223 return false;
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parents:
diff changeset
224 }
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parents:
diff changeset
225 }
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parents:
diff changeset
226
5197fd35333c refactoring of OrthancRestApi
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diff changeset
227 break;
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diff changeset
228 }
5197fd35333c refactoring of OrthancRestApi
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parents:
diff changeset
229
5197fd35333c refactoring of OrthancRestApi
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diff changeset
230 default:
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diff changeset
231 throw OrthancException(ErrorCode_InternalError);
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diff changeset
232 }
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parents:
diff changeset
233
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diff changeset
234 writer.CloseDirectory();
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diff changeset
235 return true;
5197fd35333c refactoring of OrthancRestApi
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parents:
diff changeset
236 }
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parents:
diff changeset
237
1121
82567bac5e25 Creation of ZIP archives for media storage, with DICOMDIR
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diff changeset
238
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diff changeset
239 static bool IsZip64Required(ServerIndex& index,
82567bac5e25 Creation of ZIP archives for media storage, with DICOMDIR
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diff changeset
240 const std::string& id)
751
5197fd35333c refactoring of OrthancRestApi
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diff changeset
241 {
5197fd35333c refactoring of OrthancRestApi
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diff changeset
242 /**
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243 * Determine whether ZIP64 is required. Original ZIP format can
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parents:
diff changeset
244 * store up to 2GB of data (some implementation supporting up to
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diff changeset
245 * 4GB of data), and up to 65535 files.
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diff changeset
246 * https://en.wikipedia.org/wiki/Zip_(file_format)#ZIP64
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parents:
diff changeset
247 **/
5197fd35333c refactoring of OrthancRestApi
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diff changeset
248
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diff changeset
249 uint64_t uncompressedSize;
5197fd35333c refactoring of OrthancRestApi
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parents:
diff changeset
250 uint64_t compressedSize;
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parents:
diff changeset
251 unsigned int countStudies;
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parents:
diff changeset
252 unsigned int countSeries;
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parents:
diff changeset
253 unsigned int countInstances;
1121
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diff changeset
254 index.GetStatistics(compressedSize, uncompressedSize,
82567bac5e25 Creation of ZIP archives for media storage, with DICOMDIR
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parents: 976
diff changeset
255 countStudies, countSeries, countInstances, id);
751
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diff changeset
256 const bool isZip64 = (uncompressedSize >= 2 * GIGA_BYTES ||
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parents:
diff changeset
257 countInstances >= 65535);
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diff changeset
258
5197fd35333c refactoring of OrthancRestApi
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diff changeset
259 LOG(INFO) << "Creating a ZIP file with " << countInstances << " files of size "
5197fd35333c refactoring of OrthancRestApi
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parents:
diff changeset
260 << (uncompressedSize / MEGA_BYTES) << "MB using the "
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parents:
diff changeset
261 << (isZip64 ? "ZIP64" : "ZIP32") << " file format";
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parents:
diff changeset
262
1121
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diff changeset
263 return isZip64;
82567bac5e25 Creation of ZIP archives for media storage, with DICOMDIR
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parents: 976
diff changeset
264 }
82567bac5e25 Creation of ZIP archives for media storage, with DICOMDIR
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parents: 976
diff changeset
265
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diff changeset
266
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diff changeset
267 template <enum ResourceType resourceType>
82567bac5e25 Creation of ZIP archives for media storage, with DICOMDIR
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diff changeset
268 static void GetArchive(RestApiGetCall& call)
82567bac5e25 Creation of ZIP archives for media storage, with DICOMDIR
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parents: 976
diff changeset
269 {
82567bac5e25 Creation of ZIP archives for media storage, with DICOMDIR
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diff changeset
270 ServerContext& context = OrthancRestApi::GetContext(call);
82567bac5e25 Creation of ZIP archives for media storage, with DICOMDIR
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diff changeset
271
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diff changeset
272 std::string id = call.GetUriComponent("id", "");
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diff changeset
273 bool isZip64 = IsZip64Required(context.GetIndex(), id);
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parents: 976
diff changeset
274
751
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diff changeset
275 // Create a RAII for the temporary file to manage the ZIP file
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parents:
diff changeset
276 Toolbox::TemporaryFile tmp;
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diff changeset
277
5197fd35333c refactoring of OrthancRestApi
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diff changeset
278 {
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279 // Create a ZIP writer
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280 HierarchicalZipWriter writer(tmp.GetPath().c_str());
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281 writer.SetZip64(isZip64);
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282
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283 // Store the requested resource into the ZIP
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284 if (!ArchiveInternal(writer, context, id, resourceType, true))
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285 {
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286 return;
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287 }
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288 }
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289
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290 // Prepare the sending of the ZIP file
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291 FilesystemHttpSender sender(tmp.GetPath().c_str());
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292 sender.SetContentType("application/zip");
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293 sender.SetDownloadFilename(id + ".zip");
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294
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295 // Send the ZIP
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296 call.GetOutput().AnswerFile(sender);
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297
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298 // The temporary file is automatically removed thanks to the RAII
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299 }
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300
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301
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302 static void GetMediaArchive(RestApiGetCall& call)
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303 {
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304 ServerContext& context = OrthancRestApi::GetContext(call);
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305
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306 std::string id = call.GetUriComponent("id", "");
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307 bool isZip64 = IsZip64Required(context.GetIndex(), id);
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308
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309 // Create a RAII for the temporary file to manage the ZIP file
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310 Toolbox::TemporaryFile tmp;
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311
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312 {
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313 // Create a ZIP writer
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314 HierarchicalZipWriter writer(tmp.GetPath().c_str());
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315 writer.SetZip64(isZip64);
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316 writer.OpenDirectory("IMAGES");
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317
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318 // Create the DICOMDIR writer
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319 DicomDirWriter dicomDir;
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320
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321 // Retrieve the list of the instances
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322 std::list<std::string> instances;
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323 context.GetIndex().GetChildInstances(instances, id);
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324
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325 size_t pos = 0;
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326 for (std::list<std::string>::const_iterator
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327 it = instances.begin(); it != instances.end(); ++it, ++pos)
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328 {
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329 // "DICOM restricts the filenames on DICOM media to 8
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330 // characters (some systems wrongly use 8.3, but this does not
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331 // conform to the standard)."
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332 std::string filename = "IM" + boost::lexical_cast<std::string>(pos);
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333 writer.OpenFile(filename.c_str());
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334
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335 std::string dicom;
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336 context.ReadFile(dicom, *it, FileContentType_Dicom);
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337 writer.Write(dicom);
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338
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339 ParsedDicomFile parsed(dicom);
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340 dicomDir.Add("IMAGES", filename, parsed);
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341 }
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342
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343 // Add the DICOMDIR
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344 writer.CloseDirectory();
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345 writer.OpenFile("DICOMDIR");
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346 std::string s;
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347 dicomDir.Encode(s);
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348 writer.Write(s);
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349 }
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350
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351 // Prepare the sending of the ZIP file
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352 FilesystemHttpSender sender(tmp.GetPath().c_str());
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353 sender.SetContentType("application/zip");
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354 sender.SetDownloadFilename(id + ".zip");
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355
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356 // Send the ZIP
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357 call.GetOutput().AnswerFile(sender);
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358
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359 // The temporary file is automatically removed thanks to the RAII
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360 }
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361
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362
751
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363 void OrthancRestApi::RegisterArchive()
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364 {
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365 Register("/patients/{id}/archive", GetArchive<ResourceType_Patient>);
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366 Register("/studies/{id}/archive", GetArchive<ResourceType_Study>);
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367 Register("/series/{id}/archive", GetArchive<ResourceType_Series>);
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368
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369 Register("/patients/{id}/media", GetMediaArchive);
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370 Register("/studies/{id}/media", GetMediaArchive);
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371 Register("/series/{id}/media", GetMediaArchive);
751
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372 }
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373 }