--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/Resources/Orthanc/Plugins/Samples/Common/OrthancPluginCppWrapper.h	Fri Nov 25 16:34:34 2016 +0100
@@ -0,0 +1,464 @@
+/**
+ * Orthanc - A Lightweight, RESTful DICOM Store
+ * Copyright (C) 2012-2016 Sebastien Jodogne, Medical Physics
+ * Department, University Hospital of Liege, 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.
+ *
+ * In addition, as a special exception, the copyright holders of this
+ * program give permission to link the code of its release with the
+ * OpenSSL project's "OpenSSL" library (or with modified versions of it
+ * that use the same license as the "OpenSSL" library), and distribute
+ * the linked executables. You must obey the GNU General Public License
+ * in all respects for all of the code used other than "OpenSSL". If you
+ * modify file(s) with this exception, you may extend this exception to
+ * your version of the file(s), but you are not obligated to do so. If
+ * you do not wish to do so, delete this exception statement from your
+ * version. If you delete this exception statement from all source files
+ * in the program, then also delete it here.
+ * 
+ * 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 <orthanc/OrthancCPlugin.h>
+#include <boost/noncopyable.hpp>
+#include <boost/lexical_cast.hpp>
+#include <json/value.h>
+
+#if !defined(HAS_ORTHANC_EXCEPTION)
+#  error The macro HAS_ORTHANC_EXCEPTION must be defined
+#endif
+
+
+#if HAS_ORTHANC_EXCEPTION == 1
+#  include "../../../Core/OrthancException.h"
+#  define ORTHANC_PLUGINS_THROW_EXCEPTION(code)  throw ::Orthanc::OrthancException(static_cast<Orthanc::ErrorCode>(code))
+#else
+#  define ORTHANC_PLUGINS_THROW_EXCEPTION(code)  throw ::OrthancPlugins::PluginException(code)
+#endif
+
+
+
+namespace OrthancPlugins
+{
+  typedef void (*RestCallback) (OrthancPluginRestOutput* output,
+                                const char* url,
+                                const OrthancPluginHttpRequest* request);
+
+  const char* GetErrorDescription(OrthancPluginContext* context,
+                                  OrthancPluginErrorCode code);
+
+#if HAS_ORTHANC_EXCEPTION == 0
+  class PluginException
+  {
+  private:
+    OrthancPluginErrorCode  code_;
+
+  public:
+    PluginException(OrthancPluginErrorCode code) : code_(code)
+    {
+    }
+
+    OrthancPluginErrorCode GetErrorCode() const
+    {
+      return code_;
+    }
+
+    const char* What(OrthancPluginContext* context) const
+    {
+      return ::OrthancPlugins::GetErrorDescription(context, code_);
+    }
+
+    static void Check(OrthancPluginErrorCode code);
+  };
+#endif
+
+
+  class MemoryBuffer : public boost::noncopyable
+  {
+  private:
+    OrthancPluginContext*      context_;
+    OrthancPluginMemoryBuffer  buffer_;
+
+    void Check(OrthancPluginErrorCode code);
+
+  public:
+    MemoryBuffer(OrthancPluginContext* context);
+
+    ~MemoryBuffer()
+    {
+      Clear();
+    }
+
+    OrthancPluginMemoryBuffer* operator*()
+    {
+      return &buffer_;
+    }
+
+    // This transfers ownership
+    void Assign(OrthancPluginMemoryBuffer& other);
+
+    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;
+    }
+
+    void Clear();
+
+    void ToString(std::string& target) const;
+
+    void ToJson(Json::Value& target) const;
+
+    bool RestApiGet(const std::string& uri,
+                    bool applyPlugins);
+
+    bool RestApiPost(const std::string& uri,
+                     const char* body,
+                     size_t bodySize,
+                     bool applyPlugins);
+
+    bool RestApiPut(const std::string& uri,
+                    const char* 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 ReadFile(const std::string& path);
+  };
+
+
+  class OrthancString : public boost::noncopyable
+  {
+  private:
+    OrthancPluginContext*  context_;
+    char*                  str_;
+
+  public:
+    OrthancString(OrthancPluginContext* context,
+                  char* str);
+
+    ~OrthancString()
+    {
+      Clear();
+    }
+
+    void Clear();
+
+    const char* GetContent() const
+    {
+      return str_;
+    }
+
+    void ToString(std::string& target) const;
+
+    void ToJson(Json::Value& target) const;
+  };
+
+
+  class OrthancConfiguration : public boost::noncopyable
+  {
+  private:
+    OrthancPluginContext*  context_;
+    Json::Value            configuration_;  // Necessarily a Json::objectValue
+    std::string            path_;
+
+    std::string GetPath(const std::string& key) const;
+
+  public:
+    OrthancConfiguration() : context_(NULL)
+    {
+    }
+
+    OrthancConfiguration(OrthancPluginContext* context);
+
+    OrthancPluginContext* GetContext() const;
+
+    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;
+
+    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;
+  };
+
+  class OrthancImage
+  {
+  private:
+    OrthancPluginContext*  context_;
+    OrthancPluginImage*    image_;
+
+    void Clear();
+
+    void CheckImageAvailable();
+
+  public:
+    OrthancImage(OrthancPluginContext*  context);
+
+    OrthancImage(OrthancPluginContext*  context,
+                 OrthancPluginImage*    image);
+
+    OrthancImage(OrthancPluginContext*     context,
+                 OrthancPluginPixelFormat  format,
+                 uint32_t                  width,
+                 uint32_t                  height);
+
+    ~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();
+
+    unsigned int GetWidth();
+
+    unsigned int GetHeight();
+
+    unsigned int GetPitch();
+    
+    const void* GetBuffer();
+
+    void CompressPngImage(MemoryBuffer& target);
+
+    void CompressJpegImage(MemoryBuffer& target,
+                           uint8_t quality);
+
+    void AnswerPngImage(OrthancPluginRestOutput* output);
+
+    void AnswerJpegImage(OrthancPluginRestOutput* output,
+                         uint8_t quality);
+  };
+
+
+  bool RestApiGet(Json::Value& result,
+                  OrthancPluginContext* context,
+                  const std::string& uri,
+                  bool applyPlugins);
+
+  bool RestApiPost(Json::Value& result,
+                   OrthancPluginContext* context,
+                   const std::string& uri,
+                   const char* body,
+                   size_t bodySize,
+                   bool applyPlugins);
+
+  bool RestApiPost(Json::Value& result,
+                   OrthancPluginContext* context,
+                   const std::string& uri,
+                   const Json::Value& body,
+                   bool applyPlugins);
+
+  inline bool RestApiPost(Json::Value& result,
+                          OrthancPluginContext* context,
+                          const std::string& uri,
+                          const std::string& body,
+                          bool applyPlugins)
+  {
+    return RestApiPost(result, context, uri, body.empty() ? NULL : body.c_str(), 
+                       body.size(), applyPlugins);
+  }
+
+  bool RestApiPut(Json::Value& result,
+                  OrthancPluginContext* context,
+                  const std::string& uri,
+                  const char* body,
+                  size_t bodySize,
+                  bool applyPlugins);
+
+  bool RestApiPut(Json::Value& result,
+                  OrthancPluginContext* context,
+                  const std::string& uri,
+                  const Json::Value& body,
+                  bool applyPlugins);
+
+  inline bool RestApiPut(Json::Value& result,
+                         OrthancPluginContext* context,
+                         const std::string& uri,
+                         const std::string& body,
+                         bool applyPlugins)
+  {
+    return RestApiPut(result, context, uri, body.empty() ? NULL : body.c_str(), 
+                      body.size(), applyPlugins);
+  }
+
+  bool RestApiDelete(OrthancPluginContext* context,
+                     const std::string& uri,
+                     bool applyPlugins);
+
+  bool RestApiDelete(OrthancPluginContext* context,
+                     const std::string& uri,
+                     bool applyPlugins);
+
+  inline void LogError(OrthancPluginContext* context,
+                       const std::string& message)
+  {
+    if (context != NULL)
+    {
+      OrthancPluginLogError(context, message.c_str());
+    }
+  }
+
+  inline void LogWarning(OrthancPluginContext* context,
+                         const std::string& message)
+  {
+    if (context != NULL)
+    {
+      OrthancPluginLogWarning(context, message.c_str());
+    }
+  }
+
+  inline void LogInfo(OrthancPluginContext* context,
+                      const std::string& message)
+  {
+    if (context != NULL)
+    {
+      OrthancPluginLogInfo(context, message.c_str());
+    }
+  }
+
+  bool CheckMinimalOrthancVersion(OrthancPluginContext* context,
+                                  unsigned int major,
+                                  unsigned int minor,
+                                  unsigned int revision);
+
+
+  namespace Internals
+  {
+    template <RestCallback Callback>
+    OrthancPluginErrorCode Protect(OrthancPluginRestOutput* output,
+                                   const char* url,
+                                   const OrthancPluginHttpRequest* request)
+    {
+      try
+      {
+        Callback(output, url, request);
+        return OrthancPluginErrorCode_Success;
+      }
+#if HAS_ORTHANC_EXCEPTION == 1
+      catch (Orthanc::OrthancException& e)
+      {
+        return static_cast<OrthancPluginErrorCode>(e.GetErrorCode());
+      }
+#else
+      catch (OrthancPlugins::PluginException& e)
+      {
+        return e.GetErrorCode();
+      }
+#endif
+      catch (boost::bad_lexical_cast&)
+      {
+        return OrthancPluginErrorCode_BadFileFormat;
+      }
+      catch (...)
+      {
+        return OrthancPluginErrorCode_Plugin;
+      }
+    }
+  }
+
+  
+  template <RestCallback Callback>
+  void RegisterRestCallback(OrthancPluginContext* context,
+                            const std::string& uri,
+                            bool isThreadSafe)
+  {
+    if (isThreadSafe)
+    {
+      OrthancPluginRegisterRestCallbackNoLock(context, uri.c_str(), Internals::Protect<Callback>);
+    }
+    else
+    {
+      OrthancPluginRegisterRestCallback(context, uri.c_str(), Internals::Protect<Callback>);
+    }
+  }
+}