ossimStreamFactoryRegistry.h

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//*******************************************************************
//
// License: MIT
//
// See LICENSE.txt file in the top level directory for more details.
//
// Author: Garrett Potts
//
//*******************************************************************
// $Id$

#ifndef ossimStreamFactoryRegistry_HEADER
#define ossimStreamFactoryRegistry_HEADER 1

#include <ossim/base/ossimFactoryListInterface.h>
#include <ossim/base/ossimRefPtr.h>
#include <ossim/base/ossimIoStream.h>
#include <ossim/base/ossimStreamFactoryBase.h>
#include <ossim/base/ossimRegExp.h>

#include <memory>
#include <vector>
#include <mutex>
#include <atomic>
namespace ossim
{
   class OSSIM_DLL StreamFactoryRegistry : public StreamFactoryBase
   {
   public:
      static StreamFactoryRegistry* instance();
      virtual ~StreamFactoryRegistry();
   
      void registerFactory(StreamFactoryBase* factory);

      void unregisterFactory(StreamFactoryBase* factory);

      virtual std::shared_ptr<ossim::istream>
         createIstream(const std::string& connectionString,
                       const ossimKeywordlist& options=ossimKeywordlist(),
                       std::ios_base::openmode mode=
                       std::ios_base::in|std::ios_base::binary) const;
      
      virtual std::shared_ptr<ossim::ostream>
         createOstream(const std::string& connectionString,
                       const ossimKeywordlist& options=ossimKeywordlist(),
                       std::ios_base::openmode mode=
                       std::ios_base::out|std::ios_base::binary) const;
      
      virtual std::shared_ptr<ossim::iostream>
         createIOstream(const std::string& connectionString,
                        const ossimKeywordlist& options=ossimKeywordlist(),
                        std::ios_base::openmode mode=
                        std::ios_base::in|std::ios_base::out|std::ios_base::binary) const;

      bool exists(const std::string& connectionString) const;

      virtual bool exists(const std::string& connectionString,
                          bool& continueFlag) const;
   
      void loadPreferences();

   protected:
      StreamFactoryRegistry();
      
   private:

      class BufferInfo{
      public:
        BufferInfo():m_enabled(false),
                     m_enableBlocked(false),
                     m_pattern(""),
                     m_size(4096){}
        bool                 m_enabled;
        bool                 m_enableBlocked;
        ossimString          m_pattern;
        ossim_uint64         m_size;

      };     
      StreamFactoryRegistry(const StreamFactoryRegistry&);

      bool getBufferInfo(BufferInfo& bufferInfo, 
                      const ossimString& connectionString)const;
      
      std::vector<StreamFactoryBase*> m_factoryList;
      std::vector<BufferInfo>  m_bufferInfoList;
      static StreamFactoryRegistry*   m_instance;
      mutable ossimRegExp m_patternMatcher;
      mutable std::mutex m_mutex;
   };
   
} // End: namespace ossim

#endif