--- a/Core/DicomParsing/DicomWebJsonVisitor.cpp	Wed Jun 12 09:57:02 2019 +0200
+++ b/Core/DicomParsing/DicomWebJsonVisitor.cpp	Wed Jun 12 12:11:58 2019 +0200
@@ -521,15 +521,21 @@
       Json::Value& node = CreateNode(parentTags, parentIndexes, tag);
       node[KEY_VR] = EnumerationToString(vr);
 
+#if 0
+      /**
+       * TODO - The JSON file has an UTF-8 encoding, thus DCMTK
+       * replaces the specific character set with "ISO_IR 192"
+       * (UNICODE UTF-8). On Google Cloud Healthcare, however, the
+       * source encoding is reported, which seems more logical. We
+       * thus choose the Google convention. Enabling this block will
+       * mimic the DCMTK behavior.
+       **/
       if (tag == DICOM_TAG_SPECIFIC_CHARACTER_SET)
       {
-        // TODO - The JSON file has an UTF-8 encoding, thus DCMTK
-        // replaces the specific character set with "ISO_IR 192"
-        // (UNICODE UTF-8). It is unclear whether the source
-        // character set should be kept: We thus mimic DCMTK.
         node[KEY_VALUE].append("ISO_IR 192");
       }
       else
+#endif
       {
         std::string truncated;
         
@@ -542,12 +548,21 @@
         {
           truncated = value;
         }
-        
+
         if (!truncated.empty())
         {
           std::vector<std::string> tokens;
           Toolbox::TokenizeString(tokens, truncated, '\\');
 
+          if (tag == DICOM_TAG_SPECIFIC_CHARACTER_SET &&
+              tokens.size() > 1 &&
+              tokens[0].empty())
+          {
+            std::string s = tokens[1];
+            tokens.clear();
+            tokens.push_back(s);
+          }
+
           node[KEY_VALUE] = Json::arrayValue;
           for (size_t i = 0; i < tokens.size(); i++)
           {

--- a/Plugins/Engine/OrthancPlugins.cpp	Wed Jun 12 09:57:02 2019 +0200
+++ b/Plugins/Engine/OrthancPlugins.cpp	Wed Jun 12 12:11:58 2019 +0200
@@ -3672,7 +3672,7 @@
         {
           visitor.FormatXml(s);
         }
-        
+
         *p.target = CopyString(s);
         return true;
       }

--- a/Plugins/Samples/Common/OrthancPluginCppWrapper.cpp	Wed Jun 12 09:57:02 2019 +0200
+++ b/Plugins/Samples/Common/OrthancPluginCppWrapper.cpp	Wed Jun 12 12:11:58 2019 +0200
@@ -2314,17 +2314,27 @@
     {
     private:
       std::string  body_;
+      bool         done_;
 
     public:
       MemoryRequestBody(const std::string& body) :
-        body_(body)
+        body_(body),
+        done_(false)
       {
       }
 
       virtual bool ReadNextChunk(std::string& chunk)
       {
-        chunk.swap(body_);
-        return true;
+        if (done_)
+        {
+          return false;
+        }
+        else
+        {
+          chunk.swap(body_);
+          done_ = true;
+          return true;
+        }
       }
     };
 
@@ -2603,6 +2613,21 @@
 #endif
   }
 
+
+  void HttpClient::Execute(HttpHeaders& answerHeaders /* out */,
+                           Json::Value& answerBody /* out */)
+  {
+    std::string body;
+    Execute(answerHeaders, body);
+    
+    Json::Reader reader;
+    if (!reader.parse(body, answerBody))
+    {
+      LogError("Cannot convert HTTP answer body to JSON");
+      ORTHANC_PLUGINS_THROW_EXCEPTION(BadFileFormat);
+    }
+  }
+
 #endif  /* HAS_ORTHANC_PLUGIN_HTTP_CLIENT == 1 */
 
 

--- a/Plugins/Samples/Common/OrthancPluginCppWrapper.h	Wed Jun 12 09:57:02 2019 +0200
+++ b/Plugins/Samples/Common/OrthancPluginCppWrapper.h	Wed Jun 12 12:11:58 2019 +0200
@@ -915,6 +915,9 @@
 
     void Execute(HttpHeaders& answerHeaders /* out */,
                  std::string& answerBody /* out */);
+
+    void Execute(HttpHeaders& answerHeaders /* out */,
+                 Json::Value& answerBody /* out */);
   };
 #endif
 

--- a/UnitTestsSources/FromDcmtkTests.cpp	Wed Jun 12 09:57:02 2019 +0200
+++ b/UnitTestsSources/FromDcmtkTests.cpp	Wed Jun 12 12:11:58 2019 +0200
@@ -1582,7 +1582,7 @@
   doc.load_buffer(xml.c_str(), xml.size());
 
   pugi::xpath_node node = SelectNode(doc, "//NativeDicomModel/DicomAttribute[@tag=\"00080005\"]/Value");
-  ASSERT_STREQ("ISO_IR 192", node.node().text().as_string());
+  ASSERT_STREQ("ISO 2022 IR 149", node.node().text().as_string());
 
   node = SelectNode(doc, "//NativeDicomModel/DicomAttribute[@tag=\"00080005\"]");
   ASSERT_STREQ("CS", node.node().attribute("vr").value());
@@ -1662,7 +1662,7 @@
   doc.load_buffer(xml.c_str(), xml.size());
 
   pugi::xpath_node node = SelectNode(doc, "//NativeDicomModel/DicomAttribute[@tag=\"00080005\"]/Value");
-  ASSERT_STREQ("ISO_IR 192", node.node().text().as_string());
+  ASSERT_STREQ("ISO 2022 IR 87", node.node().text().as_string());
 
   node = SelectNode(doc, "//NativeDicomModel/DicomAttribute[@tag=\"00080005\"]");
   ASSERT_STREQ("CS", node.node().attribute("vr").value());