--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/Applications/Resources/Orthanc/Plugins/OrthancPluginCppWrapper.h	Tue Aug 11 13:24:38 2020 +0200
@@ -0,0 +1,1228 @@
+/**
+ * Orthanc - A Lightweight, RESTful DICOM Store
+ * Copyright (C) 2012-2016 Sebastien Jodogne, Medical Physics
+ * Department, University Hospital of Liege, Belgium
+ * Copyright (C) 2017-2020 Osimis S.A., Belgium
+ *
+ * This program is free software: you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License as
+ * published by the Free Software Foundation, either version 3 of the
+ * License, or (at your option) any later version.
+ * 
+ * This program is distributed in the hope that it will be useful, but
+ * WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ * General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program. If not, see <http://www.gnu.org/licenses/>.
+ **/
+
+
+#pragma once
+
+#include "OrthancPluginException.h"
+
+#include <orthanc/OrthancCPlugin.h>
+#include <boost/noncopyable.hpp>
+#include <boost/lexical_cast.hpp>
+#include <boost/date_time/posix_time/posix_time.hpp>
+#include <json/value.h>
+#include <vector>
+#include <list>
+#include <set>
+#include <map>
+
+
+
+/**
+ * The definition of ORTHANC_PLUGINS_VERSION_IS_ABOVE below is for
+ * backward compatibility with Orthanc SDK <= 1.3.0.
+ * 
+ *   $ hg diff -r Orthanc-1.3.0:Orthanc-1.3.1 ../../../Plugins/Include/orthanc/OrthancCPlugin.h
+ *
+ **/
+#if !defined(ORTHANC_PLUGINS_VERSION_IS_ABOVE)
+#define ORTHANC_PLUGINS_VERSION_IS_ABOVE(major, minor, revision)        \
+  (ORTHANC_PLUGINS_MINIMAL_MAJOR_NUMBER > major ||                      \
+   (ORTHANC_PLUGINS_MINIMAL_MAJOR_NUMBER == major &&                    \
+    (ORTHANC_PLUGINS_MINIMAL_MINOR_NUMBER > minor ||                    \
+     (ORTHANC_PLUGINS_MINIMAL_MINOR_NUMBER == minor &&                  \
+      ORTHANC_PLUGINS_MINIMAL_REVISION_NUMBER >= revision))))
+#endif
+
+
+#if !defined(ORTHANC_FRAMEWORK_VERSION_IS_ABOVE)
+#define ORTHANC_FRAMEWORK_VERSION_IS_ABOVE(major, minor, revision)      \
+  (ORTHANC_VERSION_MAJOR > major ||                                     \
+   (ORTHANC_VERSION_MAJOR == major &&                                   \
+    (ORTHANC_VERSION_MINOR > minor ||                                   \
+     (ORTHANC_VERSION_MINOR == minor &&                                 \
+      ORTHANC_VERSION_REVISION >= revision))))
+#endif
+
+
+#if ORTHANC_PLUGINS_VERSION_IS_ABOVE(1, 2, 0)
+// The "OrthancPluginFindMatcher()" primitive was introduced in Orthanc 1.2.0
+#  define HAS_ORTHANC_PLUGIN_FIND_MATCHER  1
+#else
+#  define HAS_ORTHANC_PLUGIN_FIND_MATCHER  0
+#endif
+
+
+#if ORTHANC_PLUGINS_VERSION_IS_ABOVE(1, 4, 2)
+#  define HAS_ORTHANC_PLUGIN_PEERS  1
+#  define HAS_ORTHANC_PLUGIN_JOB    1
+#else
+#  define HAS_ORTHANC_PLUGIN_PEERS  0
+#  define HAS_ORTHANC_PLUGIN_JOB    0
+#endif
+
+#if ORTHANC_PLUGINS_VERSION_IS_ABOVE(1, 5, 0)
+#  define HAS_ORTHANC_PLUGIN_EXCEPTION_DETAILS  1
+#else
+#  define HAS_ORTHANC_PLUGIN_EXCEPTION_DETAILS  0
+#endif
+
+#if ORTHANC_PLUGINS_VERSION_IS_ABOVE(1, 5, 4)
+#  define HAS_ORTHANC_PLUGIN_METRICS  1
+#else
+#  define HAS_ORTHANC_PLUGIN_METRICS  0
+#endif
+
+#if ORTHANC_PLUGINS_VERSION_IS_ABOVE(1, 1, 0)
+#  define HAS_ORTHANC_PLUGIN_HTTP_CLIENT  1
+#else
+#  define HAS_ORTHANC_PLUGIN_HTTP_CLIENT  0
+#endif
+
+#if ORTHANC_PLUGINS_VERSION_IS_ABOVE(1, 5, 7)
+#  define HAS_ORTHANC_PLUGIN_CHUNKED_HTTP_CLIENT  1
+#else
+#  define HAS_ORTHANC_PLUGIN_CHUNKED_HTTP_CLIENT  0
+#endif
+
+#if ORTHANC_PLUGINS_VERSION_IS_ABOVE(1, 5, 7)
+#  define HAS_ORTHANC_PLUGIN_CHUNKED_HTTP_SERVER  1
+#else
+#  define HAS_ORTHANC_PLUGIN_CHUNKED_HTTP_SERVER  0
+#endif
+
+#if ORTHANC_PLUGINS_VERSION_IS_ABOVE(1, 6, 0)
+#  define HAS_ORTHANC_PLUGIN_STORAGE_COMMITMENT_SCP  1
+#else
+#  define HAS_ORTHANC_PLUGIN_STORAGE_COMMITMENT_SCP  0
+#endif
+
+
+
+namespace OrthancPlugins
+{
+  typedef void (*RestCallback) (OrthancPluginRestOutput* output,
+                                const char* url,
+                                const OrthancPluginHttpRequest* request);
+
+  void SetGlobalContext(OrthancPluginContext* context);
+
+  bool HasGlobalContext();
+
+  OrthancPluginContext* GetGlobalContext();
+
+  
+  class OrthancImage;
+
+
+  class MemoryBuffer : public boost::noncopyable
+  {
+  private:
+    OrthancPluginMemoryBuffer  buffer_;
+
+    void Check(OrthancPluginErrorCode code);
+
+    bool CheckHttp(OrthancPluginErrorCode code);
+
+  public:
+    MemoryBuffer();
+
+#if ORTHANC_PLUGINS_VERSION_IS_ABOVE(1, 7, 0)
+    // This constructor makes a copy of the given buffer in the memory
+    // handled by the Orthanc core
+    MemoryBuffer(const void* buffer,
+                 size_t size);
+#endif
+
+    ~MemoryBuffer()
+    {
+      Clear();
+    }
+
+    OrthancPluginMemoryBuffer* operator*()
+    {
+      return &buffer_;
+    }
+
+    // This transfers ownership from "other" to "this"
+    void Assign(OrthancPluginMemoryBuffer& other);
+
+    void Swap(MemoryBuffer& other);
+
+    OrthancPluginMemoryBuffer Release();
+
+    const char* GetData() const
+    {
+      if (buffer_.size > 0)
+      {
+        return reinterpret_cast<const char*>(buffer_.data);
+      }
+      else
+      {
+        return NULL;
+      }
+    }
+
+    size_t GetSize() const
+    {
+      return buffer_.size;
+    }
+
+    bool IsEmpty() const
+    {
+      return GetSize() == 0 || GetData() == NULL;
+    }
+
+    void Clear();
+
+    void ToString(std::string& target) const;
+
+    void ToJson(Json::Value& target) const;
+
+    bool RestApiGet(const std::string& uri,
+                    bool applyPlugins);
+
+    bool RestApiGet(const std::string& uri,
+                    const std::map<std::string, std::string>& httpHeaders,
+                    bool applyPlugins);
+
+    bool RestApiPost(const std::string& uri,
+                     const void* body,
+                     size_t bodySize,
+                     bool applyPlugins);
+
+    bool RestApiPut(const std::string& uri,
+                    const void* body,
+                    size_t bodySize,
+                    bool applyPlugins);
+
+    bool RestApiPost(const std::string& uri,
+                     const Json::Value& body,
+                     bool applyPlugins);
+
+    bool RestApiPut(const std::string& uri,
+                    const Json::Value& body,
+                    bool applyPlugins);
+
+    bool RestApiPost(const std::string& uri,
+                     const std::string& body,
+                     bool applyPlugins)
+    {
+      return RestApiPost(uri, body.empty() ? NULL : body.c_str(), body.size(), applyPlugins);
+    }
+
+    bool RestApiPut(const std::string& uri,
+                    const std::string& body,
+                    bool applyPlugins)
+    {
+      return RestApiPut(uri, body.empty() ? NULL : body.c_str(), body.size(), applyPlugins);
+    }
+
+    void CreateDicom(const Json::Value& tags,
+                     OrthancPluginCreateDicomFlags flags);
+
+    void CreateDicom(const Json::Value& tags,
+                     const OrthancImage& pixelData,
+                     OrthancPluginCreateDicomFlags flags);
+
+    void ReadFile(const std::string& path);
+
+    void GetDicomQuery(const OrthancPluginWorklistQuery* query);
+
+    void DicomToJson(Json::Value& target,
+                     OrthancPluginDicomToJsonFormat format,
+                     OrthancPluginDicomToJsonFlags flags,
+                     uint32_t maxStringLength);
+
+    bool HttpGet(const std::string& url,
+                 const std::string& username,
+                 const std::string& password);
+
+    bool HttpPost(const std::string& url,
+                  const std::string& body,
+                  const std::string& username,
+                  const std::string& password);
+
+    bool HttpPut(const std::string& url,
+                 const std::string& body,
+                 const std::string& username,
+                 const std::string& password);
+
+    void GetDicomInstance(const std::string& instanceId);
+  };
+
+
+  class OrthancString : public boost::noncopyable
+  {
+  private:
+    char*   str_;
+
+    void Clear();
+
+  public:
+    OrthancString() :
+      str_(NULL)
+    {
+    }
+
+    ~OrthancString()
+    {
+      Clear();
+    }
+
+    // This transfers ownership, warning: The string must have been
+    // allocated by the Orthanc core
+    void Assign(char* str);
+
+    const char* GetContent() const
+    {
+      return str_;
+    }
+
+    void ToString(std::string& target) const;
+
+    void ToJson(Json::Value& target) const;
+  };
+
+
+  class OrthancConfiguration : public boost::noncopyable
+  {
+  private:
+    Json::Value  configuration_;  // Necessarily a Json::objectValue
+    std::string  path_;
+
+    std::string GetPath(const std::string& key) const;
+
+    void LoadConfiguration();
+    
+  public:
+    OrthancConfiguration();
+
+    explicit OrthancConfiguration(bool load);
+
+    const Json::Value& GetJson() const
+    {
+      return configuration_;
+    }
+
+    bool IsSection(const std::string& key) const;
+
+    void GetSection(OrthancConfiguration& target,
+                    const std::string& key) const;
+
+    bool LookupStringValue(std::string& target,
+                           const std::string& key) const;
+    
+    bool LookupIntegerValue(int& target,
+                            const std::string& key) const;
+
+    bool LookupUnsignedIntegerValue(unsigned int& target,
+                                    const std::string& key) const;
+
+    bool LookupBooleanValue(bool& target,
+                            const std::string& key) const;
+
+    bool LookupFloatValue(float& target,
+                          const std::string& key) const;
+
+    bool LookupListOfStrings(std::list<std::string>& target,
+                             const std::string& key,
+                             bool allowSingleString) const;
+
+    bool LookupSetOfStrings(std::set<std::string>& target,
+                            const std::string& key,
+                            bool allowSingleString) const;
+
+    std::string GetStringValue(const std::string& key,
+                               const std::string& defaultValue) const;
+
+    int GetIntegerValue(const std::string& key,
+                        int defaultValue) const;
+
+    unsigned int GetUnsignedIntegerValue(const std::string& key,
+                                         unsigned int defaultValue) const;
+
+    bool GetBooleanValue(const std::string& key,
+                         bool defaultValue) const;
+
+    float GetFloatValue(const std::string& key,
+                        float defaultValue) const;
+
+    void GetDictionary(std::map<std::string, std::string>& target,
+                       const std::string& key) const;
+  };
+
+  class OrthancImage : public boost::noncopyable
+  {
+  private:
+    OrthancPluginImage*    image_;
+
+    void Clear();
+
+    void CheckImageAvailable() const;
+
+  public:
+    OrthancImage();
+
+    explicit OrthancImage(OrthancPluginImage* image);
+
+    OrthancImage(OrthancPluginPixelFormat  format,
+                 uint32_t                  width,
+                 uint32_t                  height);
+
+    OrthancImage(OrthancPluginPixelFormat  format,
+                 uint32_t                  width,
+                 uint32_t                  height,
+                 uint32_t                  pitch,
+                 void*                     buffer);
+
+    ~OrthancImage()
+    {
+      Clear();
+    }
+
+    void UncompressPngImage(const void* data,
+                            size_t size);
+
+    void UncompressJpegImage(const void* data,
+                             size_t size);
+
+    void DecodeDicomImage(const void* data,
+                          size_t size,
+                          unsigned int frame);
+
+    OrthancPluginPixelFormat GetPixelFormat() const;
+
+    unsigned int GetWidth() const;
+
+    unsigned int GetHeight() const;
+
+    unsigned int GetPitch() const;
+    
+    void* GetBuffer() const;
+
+    const OrthancPluginImage* GetObject() const
+    {
+      return image_;
+    }
+
+    void CompressPngImage(MemoryBuffer& target) const;
+
+    void CompressJpegImage(MemoryBuffer& target,
+                           uint8_t quality) const;
+
+    void AnswerPngImage(OrthancPluginRestOutput* output) const;
+
+    void AnswerJpegImage(OrthancPluginRestOutput* output,
+                         uint8_t quality) const;
+    
+    void* GetWriteableBuffer();
+
+    OrthancPluginImage* Release();
+  };
+
+
+#if HAS_ORTHANC_PLUGIN_FIND_MATCHER == 1
+  class FindMatcher : public boost::noncopyable
+  {
+  private:
+    OrthancPluginFindMatcher*          matcher_;
+    const OrthancPluginWorklistQuery*  worklist_;
+
+    void SetupDicom(const void*            query,
+                    uint32_t               size);
+
+  public:
+    explicit FindMatcher(const OrthancPluginWorklistQuery*  worklist);
+
+    FindMatcher(const void*  query,
+                uint32_t     size)
+    {
+      SetupDicom(query, size);
+    }
+
+    explicit FindMatcher(const MemoryBuffer&  dicom)
+    {
+      SetupDicom(dicom.GetData(), dicom.GetSize());
+    }
+
+    ~FindMatcher();
+
+    bool IsMatch(const void*  dicom,
+                 uint32_t     size) const;
+
+    bool IsMatch(const MemoryBuffer& dicom) const
+    {
+      return IsMatch(dicom.GetData(), dicom.GetSize());
+    }
+  };
+#endif
+
+
+  bool RestApiGet(Json::Value& result,
+                  const std::string& uri,
+                  bool applyPlugins);
+
+  bool RestApiGetString(std::string& result,
+                        const std::string& uri,
+                        bool applyPlugins);
+
+  bool RestApiGetString(std::string& result,
+                        const std::string& uri,
+                        const std::map<std::string, std::string>& httpHeaders,
+                        bool applyPlugins);
+
+  bool RestApiPost(std::string& result,
+                   const std::string& uri,
+                   const void* body,
+                   size_t bodySize,
+                   bool applyPlugins);
+
+  bool RestApiPost(Json::Value& result,
+                   const std::string& uri,
+                   const void* body,
+                   size_t bodySize,
+                   bool applyPlugins);
+
+  bool RestApiPost(Json::Value& result,
+                   const std::string& uri,
+                   const Json::Value& body,
+                   bool applyPlugins);
+
+  inline bool RestApiPost(Json::Value& result,
+                          const std::string& uri,
+                          const std::string& body,
+                          bool applyPlugins)
+  {
+    return RestApiPost(result, uri, body.empty() ? NULL : body.c_str(),
+                       body.size(), applyPlugins);
+  }
+
+  inline bool RestApiPost(Json::Value& result,
+                          const std::string& uri,
+                          const MemoryBuffer& body,
+                          bool applyPlugins)
+  {
+    return RestApiPost(result, uri, body.GetData(),
+                       body.GetSize(), applyPlugins);
+  }
+
+  bool RestApiPut(Json::Value& result,
+                  const std::string& uri,
+                  const void* body,
+                  size_t bodySize,
+                  bool applyPlugins);
+
+  bool RestApiPut(Json::Value& result,
+                  const std::string& uri,
+                  const Json::Value& body,
+                  bool applyPlugins);
+
+  inline bool RestApiPut(Json::Value& result,
+                         const std::string& uri,
+                         const std::string& body,
+                         bool applyPlugins)
+  {
+    return RestApiPut(result, uri, body.empty() ? NULL : body.c_str(),
+                      body.size(), applyPlugins);
+  }
+
+  bool RestApiDelete(const std::string& uri,
+                     bool applyPlugins);
+
+  bool HttpDelete(const std::string& url,
+                  const std::string& username,
+                  const std::string& password);
+
+  void AnswerJson(const Json::Value& value,
+                  OrthancPluginRestOutput* output);
+
+  void AnswerString(const std::string& answer,
+                    const char* mimeType,
+                    OrthancPluginRestOutput* output);
+
+  void AnswerHttpError(uint16_t httpError,
+                       OrthancPluginRestOutput* output);
+
+  void AnswerMethodNotAllowed(OrthancPluginRestOutput* output, const char* allowedMethods);
+
+#if ORTHANC_PLUGINS_VERSION_IS_ABOVE(1, 5, 0)
+  const char* AutodetectMimeType(const std::string& path);
+#endif
+
+  void LogError(const std::string& message);
+
+  void LogWarning(const std::string& message);
+
+  void LogInfo(const std::string& message);
+
+  void ReportMinimalOrthancVersion(unsigned int major,
+                                   unsigned int minor,
+                                   unsigned int revision);
+  
+  bool CheckMinimalOrthancVersion(unsigned int major,
+                                  unsigned int minor,
+                                  unsigned int revision);
+
+
+  namespace Internals
+  {
+    template <RestCallback Callback>
+    static OrthancPluginErrorCode Protect(OrthancPluginRestOutput* output,
+                                          const char* url,
+                                          const OrthancPluginHttpRequest* request)
+    {
+      try
+      {
+        Callback(output, url, request);
+        return OrthancPluginErrorCode_Success;
+      }
+      catch (ORTHANC_PLUGINS_EXCEPTION_CLASS& e)
+      {
+#if HAS_ORTHANC_EXCEPTION == 1 && HAS_ORTHANC_PLUGIN_EXCEPTION_DETAILS == 1
+        if (HasGlobalContext() &&
+            e.HasDetails())
+        {
+          // The "false" instructs Orthanc not to log the detailed
+          // error message. This is to avoid duplicating the details,
+          // because "OrthancException" already does it on construction.
+          OrthancPluginSetHttpErrorDetails
+            (GetGlobalContext(), output, e.GetDetails(), false);
+        }
+#endif
+
+        return static_cast<OrthancPluginErrorCode>(e.GetErrorCode());
+      }
+      catch (boost::bad_lexical_cast&)
+      {
+        return OrthancPluginErrorCode_BadFileFormat;
+      }
+      catch (...)
+      {
+        return OrthancPluginErrorCode_Plugin;
+      }
+    }
+  }
+
+  
+  template <RestCallback Callback>
+  void RegisterRestCallback(const std::string& uri,
+                            bool isThreadSafe)
+  {
+    if (isThreadSafe)
+    {
+      OrthancPluginRegisterRestCallbackNoLock
+        (GetGlobalContext(), uri.c_str(), Internals::Protect<Callback>);
+    }
+    else
+    {
+      OrthancPluginRegisterRestCallback
+        (GetGlobalContext(), uri.c_str(), Internals::Protect<Callback>);
+    }
+  }
+
+
+#if HAS_ORTHANC_PLUGIN_PEERS == 1
+  class OrthancPeers : public boost::noncopyable
+  {
+  private:
+    typedef std::map<std::string, uint32_t>   Index;
+
+    OrthancPluginPeers   *peers_;
+    Index                 index_;
+    uint32_t              timeout_;
+
+    size_t GetPeerIndex(const std::string& name) const;
+
+  public:
+    OrthancPeers();
+
+    ~OrthancPeers();
+
+    uint32_t GetTimeout() const
+    {
+      return timeout_;
+    }
+
+    void SetTimeout(uint32_t timeout)
+    {
+      timeout_ = timeout;
+    }
+
+    bool LookupName(size_t& target,
+                    const std::string& name) const;
+
+    std::string GetPeerName(size_t index) const;
+
+    std::string GetPeerUrl(size_t index) const;
+
+    std::string GetPeerUrl(const std::string& name) const;
+
+    size_t GetPeersCount() const
+    {
+      return index_.size();
+    }
+
+    bool LookupUserProperty(std::string& value,
+                            size_t index,
+                            const std::string& key) const;
+
+    bool LookupUserProperty(std::string& value,
+                            const std::string& peer,
+                            const std::string& key) const;
+
+    bool DoGet(MemoryBuffer& target,
+               size_t index,
+               const std::string& uri) const;
+
+    bool DoGet(MemoryBuffer& target,
+               const std::string& name,
+               const std::string& uri) const;
+
+    bool DoGet(Json::Value& target,
+               size_t index,
+               const std::string& uri) const;
+
+    bool DoGet(Json::Value& target,
+               const std::string& name,
+               const std::string& uri) const;
+
+    bool DoPost(MemoryBuffer& target,
+                size_t index,
+                const std::string& uri,
+                const std::string& body) const;
+
+    bool DoPost(MemoryBuffer& target,
+                const std::string& name,
+                const std::string& uri,
+                const std::string& body) const;
+
+    bool DoPost(Json::Value& target,
+                size_t index,
+                const std::string& uri,
+                const std::string& body) const;
+
+    bool DoPost(Json::Value& target,
+                const std::string& name,
+                const std::string& uri,
+                const std::string& body) const;
+
+    bool DoPut(size_t index,
+               const std::string& uri,
+               const std::string& body) const;
+
+    bool DoPut(const std::string& name,
+               const std::string& uri,
+               const std::string& body) const;
+
+    bool DoDelete(size_t index,
+                  const std::string& uri) const;
+
+    bool DoDelete(const std::string& name,
+                  const std::string& uri) const;
+  };
+#endif
+
+
+
+#if HAS_ORTHANC_PLUGIN_JOB == 1
+  class OrthancJob : public boost::noncopyable
+  {
+  private:
+    std::string   jobType_;
+    std::string   content_;
+    bool          hasSerialized_;
+    std::string   serialized_;
+    float         progress_;
+
+    static void CallbackFinalize(void* job);
+
+    static float CallbackGetProgress(void* job);
+
+    static const char* CallbackGetContent(void* job);
+
+    static const char* CallbackGetSerialized(void* job);
+
+    static OrthancPluginJobStepStatus CallbackStep(void* job);
+
+    static OrthancPluginErrorCode CallbackStop(void* job,
+                                               OrthancPluginJobStopReason reason);
+
+    static OrthancPluginErrorCode CallbackReset(void* job);
+
+  protected:
+    void ClearContent();
+
+    void UpdateContent(const Json::Value& content);
+
+    void ClearSerialized();
+
+    void UpdateSerialized(const Json::Value& serialized);
+
+    void UpdateProgress(float progress);
+    
+  public:
+    OrthancJob(const std::string& jobType);
+    
+    virtual ~OrthancJob()
+    {
+    }
+
+    virtual OrthancPluginJobStepStatus Step() = 0;
+
+    virtual void Stop(OrthancPluginJobStopReason reason) = 0;
+    
+    virtual void Reset() = 0;
+
+    static OrthancPluginJob* Create(OrthancJob* job /* takes ownership */);
+
+    static std::string Submit(OrthancJob* job /* takes ownership */,
+                              int priority);
+
+    static void SubmitAndWait(Json::Value& result,
+                              OrthancJob* job /* takes ownership */,
+                              int priority);
+
+    // Submit a job from a POST on the REST API with the same
+    // conventions as in the Orthanc core (according to the
+    // "Synchronous" and "Priority" options)
+    static void SubmitFromRestApiPost(OrthancPluginRestOutput* output,
+                                      const Json::Value& body,
+                                      OrthancJob* job);
+  };
+#endif
+
+
+#if HAS_ORTHANC_PLUGIN_METRICS == 1
+  inline void SetMetricsValue(char* name,
+                              float value)
+  {
+    OrthancPluginSetMetricsValue(GetGlobalContext(), name,
+                                 value, OrthancPluginMetricsType_Default);
+  }
+
+  class MetricsTimer : public boost::noncopyable
+  {
+  private:
+    std::string               name_;
+    boost::posix_time::ptime  start_;
+
+  public:
+    explicit MetricsTimer(const char* name);
+
+    ~MetricsTimer();
+  };
+#endif
+
+
+#if HAS_ORTHANC_PLUGIN_HTTP_CLIENT == 1
+  class HttpClient : public boost::noncopyable
+  {
+  public:
+    typedef std::map<std::string, std::string>  HttpHeaders;
+
+    class IRequestBody : public boost::noncopyable
+    {
+    public:
+      virtual ~IRequestBody()
+      {
+      }
+
+      virtual bool ReadNextChunk(std::string& chunk) = 0;
+    };
+
+
+    class IAnswer : public boost::noncopyable
+    {
+    public:
+      virtual ~IAnswer()
+      {
+      }
+
+      virtual void AddHeader(const std::string& key,
+                             const std::string& value) = 0;
+
+      virtual void AddChunk(const void* data,
+                            size_t size) = 0;
+    };
+
+
+  private:
+    class RequestBodyWrapper;
+
+    uint16_t                 httpStatus_;
+    OrthancPluginHttpMethod  method_;
+    std::string              url_;
+    HttpHeaders              headers_;
+    std::string              username_;
+    std::string              password_;
+    uint32_t                 timeout_;
+    std::string              certificateFile_;
+    std::string              certificateKeyFile_;
+    std::string              certificateKeyPassword_;
+    bool                     pkcs11_;
+    std::string              fullBody_;
+    IRequestBody*            chunkedBody_;
+    bool                     allowChunkedTransfers_;
+
+#if HAS_ORTHANC_PLUGIN_CHUNKED_HTTP_CLIENT == 1
+    void ExecuteWithStream(uint16_t& httpStatus,  // out
+                           IAnswer& answer,       // out
+                           IRequestBody& body) const;
+#endif
+
+    void ExecuteWithoutStream(uint16_t& httpStatus,        // out
+                              HttpHeaders& answerHeaders,  // out
+                              std::string& answerBody,     // out
+                              const std::string& body) const;
+    
+  public:
+    HttpClient();
+
+    uint16_t GetHttpStatus() const
+    {
+      return httpStatus_;
+    }
+
+    void SetMethod(OrthancPluginHttpMethod method)
+    {
+      method_ = method;
+    }
+
+    const std::string& GetUrl() const
+    {
+      return url_;
+    }
+
+    void SetUrl(const std::string& url)
+    {
+      url_ = url;
+    }
+
+    void SetHeaders(const HttpHeaders& headers)
+    {
+      headers_ = headers;
+    }
+
+    void AddHeader(const std::string& key,
+                   const std::string& value)
+    {
+      headers_[key] = value;
+    }
+
+    void AddHeaders(const HttpHeaders& headers);
+
+    void SetCredentials(const std::string& username,
+                        const std::string& password);
+
+    void ClearCredentials();
+
+    void SetTimeout(unsigned int timeout)  // 0 for default timeout
+    {
+      timeout_ = timeout;
+    }
+
+    void SetCertificate(const std::string& certificateFile,
+                        const std::string& keyFile,
+                        const std::string& keyPassword);
+
+    void ClearCertificate();
+
+    void SetPkcs11(bool pkcs11)
+    {
+      pkcs11_ = pkcs11;
+    }
+
+    void ClearBody();
+
+    void SwapBody(std::string& body);
+
+    void SetBody(const std::string& body);
+
+    void SetBody(IRequestBody& body);
+
+    // This function can be used to disable chunked transfers if the
+    // remote server is Orthanc with a version <= 1.5.6.
+    void SetChunkedTransfersAllowed(bool allow)
+    {
+      allowChunkedTransfers_ = allow;
+    }
+
+    bool IsChunkedTransfersAllowed() const
+    {
+      return allowChunkedTransfers_;
+    }
+
+    void Execute(IAnswer& answer);
+
+    void Execute(HttpHeaders& answerHeaders /* out */,
+                 std::string& answerBody /* out */);
+
+    void Execute(HttpHeaders& answerHeaders /* out */,
+                 Json::Value& answerBody /* out */);
+
+    void Execute();
+  };
+#endif
+
+
+
+  class IChunkedRequestReader : public boost::noncopyable
+  {
+  public:
+    virtual ~IChunkedRequestReader()
+    {
+    }
+
+    virtual void AddChunk(const void* data,
+                          size_t size) = 0;
+
+    virtual void Execute(OrthancPluginRestOutput* output) = 0;
+  };
+
+
+  typedef IChunkedRequestReader* (*ChunkedRestCallback) (const char* url,
+                                                         const OrthancPluginHttpRequest* request);
+
+
+  namespace Internals
+  {
+    void NullRestCallback(OrthancPluginRestOutput* output,
+                          const char* url,
+                          const OrthancPluginHttpRequest* request);
+  
+    IChunkedRequestReader *NullChunkedRestCallback(const char* url,
+                                                   const OrthancPluginHttpRequest* request);
+
+
+#if HAS_ORTHANC_PLUGIN_CHUNKED_HTTP_SERVER == 1
+    template <ChunkedRestCallback Callback>
+    static OrthancPluginErrorCode ChunkedProtect(OrthancPluginServerChunkedRequestReader** reader,
+                                                const char* url,
+                                                const OrthancPluginHttpRequest* request)
+    {
+      try
+      {
+        if (reader == NULL)
+        {
+          return OrthancPluginErrorCode_InternalError;
+        }
+        else
+        {
+          *reader = reinterpret_cast<OrthancPluginServerChunkedRequestReader*>(Callback(url, request));
+          if (*reader == NULL)
+          {
+            return OrthancPluginErrorCode_Plugin;
+          }
+          else
+          {
+            return OrthancPluginErrorCode_Success;
+          }
+        }
+      }
+      catch (ORTHANC_PLUGINS_EXCEPTION_CLASS& e)
+      {
+        return static_cast<OrthancPluginErrorCode>(e.GetErrorCode());
+      }
+      catch (boost::bad_lexical_cast&)
+      {
+        return OrthancPluginErrorCode_BadFileFormat;
+      }
+      catch (...)
+      {
+        return OrthancPluginErrorCode_Plugin;
+      }
+    }
+
+    OrthancPluginErrorCode ChunkedRequestReaderAddChunk(
+      OrthancPluginServerChunkedRequestReader* reader,
+      const void*                              data,
+      uint32_t                                 size);
+
+    OrthancPluginErrorCode ChunkedRequestReaderExecute(
+      OrthancPluginServerChunkedRequestReader* reader,
+      OrthancPluginRestOutput*                 output);
+
+    void ChunkedRequestReaderFinalize(
+      OrthancPluginServerChunkedRequestReader* reader);
+
+#else  
+
+    OrthancPluginErrorCode ChunkedRestCompatibility(OrthancPluginRestOutput* output,
+                                                    const char* url,
+                                                    const OrthancPluginHttpRequest* request,
+                                                    RestCallback GetHandler,
+                                                    ChunkedRestCallback PostHandler,
+                                                    RestCallback DeleteHandler,
+                                                    ChunkedRestCallback PutHandler);
+
+    template<
+      RestCallback         GetHandler,
+      ChunkedRestCallback  PostHandler,
+      RestCallback         DeleteHandler,
+      ChunkedRestCallback  PutHandler
+      >
+    inline OrthancPluginErrorCode ChunkedRestCompatibility(OrthancPluginRestOutput* output,
+                                                           const char* url,
+                                                           const OrthancPluginHttpRequest* request)
+    {
+      return ChunkedRestCompatibility(output, url, request, GetHandler,
+                                      PostHandler, DeleteHandler, PutHandler);
+    }
+#endif
+  }
+
+
+
+  // NB: We use a templated class instead of a templated function, because
+  // default values are only available in functions since C++11
+  template<
+    RestCallback         GetHandler    = Internals::NullRestCallback,
+    ChunkedRestCallback  PostHandler   = Internals::NullChunkedRestCallback,
+    RestCallback         DeleteHandler = Internals::NullRestCallback,
+    ChunkedRestCallback  PutHandler    = Internals::NullChunkedRestCallback
+    >
+  class ChunkedRestRegistration : public boost::noncopyable
+  {
+  public:
+    static void Apply(const std::string& uri)
+    {
+#if HAS_ORTHANC_PLUGIN_CHUNKED_HTTP_SERVER == 1
+      OrthancPluginRegisterChunkedRestCallback(
+        GetGlobalContext(), uri.c_str(),
+        GetHandler == Internals::NullRestCallback         ? NULL : Internals::Protect<GetHandler>,
+        PostHandler == Internals::NullChunkedRestCallback ? NULL : Internals::ChunkedProtect<PostHandler>,
+        DeleteHandler == Internals::NullRestCallback      ? NULL : Internals::Protect<DeleteHandler>,
+        PutHandler == Internals::NullChunkedRestCallback  ? NULL : Internals::ChunkedProtect<PutHandler>,
+        Internals::ChunkedRequestReaderAddChunk,
+        Internals::ChunkedRequestReaderExecute,
+        Internals::ChunkedRequestReaderFinalize);
+#else
+      OrthancPluginRegisterRestCallbackNoLock(
+        GetGlobalContext(), uri.c_str(), 
+        Internals::ChunkedRestCompatibility<GetHandler, PostHandler, DeleteHandler, PutHandler>);
+#endif
+    }
+  };
+
+  
+
+#if HAS_ORTHANC_PLUGIN_STORAGE_COMMITMENT_SCP == 1
+  class IStorageCommitmentScpHandler : public boost::noncopyable
+  {
+  public:
+    virtual ~IStorageCommitmentScpHandler()
+    {
+    }
+    
+    virtual OrthancPluginStorageCommitmentFailureReason Lookup(const std::string& sopClassUid,
+                                                               const std::string& sopInstanceUid) = 0;
+    
+    static OrthancPluginErrorCode Lookup(OrthancPluginStorageCommitmentFailureReason* target,
+                                         void* rawHandler,
+                                         const char* sopClassUid,
+                                         const char* sopInstanceUid);
+
+    static void Destructor(void* rawHandler);
+  };
+#endif
+
+
+  class DicomInstance : public boost::noncopyable
+  {
+  private:
+    bool toFree_;
+
+#if ORTHANC_PLUGINS_VERSION_IS_ABOVE(1, 6, 1)    
+    const OrthancPluginDicomInstance*  instance_;
+#else
+    OrthancPluginDicomInstance*  instance_;
+#endif
+    
+  public:
+#if ORTHANC_PLUGINS_VERSION_IS_ABOVE(1, 6, 1)    
+    explicit DicomInstance(const OrthancPluginDicomInstance* instance);
+#else
+    explicit DicomInstance(OrthancPluginDicomInstance* instance);
+#endif
+
+#if ORTHANC_PLUGINS_VERSION_IS_ABOVE(1, 7, 0)
+    DicomInstance(const void* buffer,
+                  size_t size);
+#endif
+
+    ~DicomInstance();
+
+    std::string GetRemoteAet() const;
+
+    const void* GetBuffer() const
+    {
+      return OrthancPluginGetInstanceData(GetGlobalContext(), instance_);
+    }
+
+    size_t GetSize() const
+    {
+      return static_cast<size_t>(OrthancPluginGetInstanceSize(GetGlobalContext(), instance_));
+    }
+
+    void GetJson(Json::Value& target) const;
+
+    void GetSimplifiedJson(Json::Value& target) const;
+
+    OrthancPluginInstanceOrigin GetOrigin() const
+    {
+      return OrthancPluginGetInstanceOrigin(GetGlobalContext(), instance_);
+    }
+
+#if ORTHANC_PLUGINS_VERSION_IS_ABOVE(1, 6, 1)
+    std::string GetTransferSyntaxUid() const;
+#endif
+
+#if ORTHANC_PLUGINS_VERSION_IS_ABOVE(1, 6, 1)
+    bool HasPixelData() const;
+#endif
+
+#if ORTHANC_PLUGINS_VERSION_IS_ABOVE(1, 7, 0)
+    unsigned int GetFramesCount() const
+    {
+      return OrthancPluginGetInstanceFramesCount(GetGlobalContext(), instance_);
+    }
+#endif
+
+#if ORTHANC_PLUGINS_VERSION_IS_ABOVE(1, 7, 0)
+    void GetRawFrame(std::string& target,
+                     unsigned int frameIndex) const;
+#endif
+
+#if ORTHANC_PLUGINS_VERSION_IS_ABOVE(1, 7, 0)
+    OrthancImage* GetDecodedFrame(unsigned int frameIndex) const;
+#endif
+
+#if ORTHANC_PLUGINS_VERSION_IS_ABOVE(1, 7, 0)
+    void Serialize(std::string& target) const;
+#endif
+
+#if ORTHANC_PLUGINS_VERSION_IS_ABOVE(1, 7, 0)
+    static DicomInstance* Transcode(const void* buffer,
+                                    size_t size,
+                                    const std::string& transferSyntax);
+#endif
+  };
+}