/*
* Zlib Compressor
* (C) 2001 Peter J Jones
*     2001-2007 Jack Lloyd
*
* Distributed under the terms of the Botan license
*/

#ifndef BOTAN_ZLIB_H__
#define BOTAN_ZLIB_H__

#include <botan/filter.h>

namespace Botan {

/*
* Zlib Compression Filter
*/
class BOTAN_DLL Zlib_Compression : public Filter
   {
   public:
      void write(const byte input[], u32bit length);
      void start_msg();
      void end_msg();

      void flush();

      Zlib_Compression(u32bit = 6);
      ~Zlib_Compression() { clear(); }
   private:
      void clear();
      const u32bit level;
      SecureVector<byte> buffer;
      class Zlib_Stream* zlib;
   };

/*
* Zlib Decompression Filter
*/
class BOTAN_DLL Zlib_Decompression : public Filter
   {
   public:
      void write(const byte input[], u32bit length);
      void start_msg();
      void end_msg();

      Zlib_Decompression();
      ~Zlib_Decompression() { clear(); }
   private:
      void clear();
      SecureVector<byte> buffer;
      class Zlib_Stream* zlib;
      bool no_writes;
   };

}

#endif