--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/OrthancFramework/Sources/HttpServer/HttpContentNegociation.h	Wed Jun 10 20:30:34 2020 +0200
@@ -0,0 +1,115 @@
+/**
+ * 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.
+ *
+ * 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 "../OrthancFramework.h"
+#include "../Compatibility.h"
+
+#include <memory>
+#include <boost/noncopyable.hpp>
+#include <map>
+#include <list>
+#include <string>
+#include <vector>
+#include <stdint.h>
+
+
+namespace Orthanc
+{
+  class ORTHANC_PUBLIC HttpContentNegociation : public boost::noncopyable
+  {
+  public:
+    typedef std::map<std::string, std::string>  HttpHeaders;
+
+    class IHandler : public boost::noncopyable
+    {
+    public:
+      virtual ~IHandler()
+      {
+      }
+
+      virtual void Handle(const std::string& type,
+                          const std::string& subtype) = 0;
+    };
+
+  private:
+    struct Handler
+    {
+      std::string  type_;
+      std::string  subtype_;
+      IHandler&    handler_;
+
+      Handler(const std::string& type,
+              const std::string& subtype,
+              IHandler& handler);
+
+      bool IsMatch(const std::string& type,
+                   const std::string& subtype) const;
+
+      void Call() const
+      {
+        handler_.Handle(type_, subtype_);
+      }
+   };
+
+
+    struct Reference;
+
+    typedef std::vector<std::string>  Tokens;
+    typedef std::list<Handler>   Handlers;
+
+    Handlers  handlers_;
+
+
+    static bool SplitPair(std::string& first /* out */,
+                          std::string& second /* out */,
+                          const std::string& source,
+                          char separator);
+
+    static float GetQuality(const Tokens& parameters);
+
+    static void SelectBestMatch(std::unique_ptr<Reference>& best,
+                                const Handler& handler,
+                                const std::string& type,
+                                const std::string& subtype,
+                                float quality);
+
+  public:
+    void Register(const std::string& mime,
+                  IHandler& handler);
+    
+    bool Apply(const HttpHeaders& headers);
+
+    bool Apply(const std::string& accept);
+  };
+}