ZckStream.h

Go to the documentation of this file.

/*---------------------------------------------------------------------\
|                          ____ _   __ __ ___                          |
|                         |__  / \ / / . \ . \                         |
|                           / / \ V /|  _/  _/                         |
|                          / /__ | | | | | |                           |
|                         /_____||_| |_| |_|                           |
|                                                                      |
\---------------------------------------------------------------------*/
#ifndef ZYPP_BASE_ZCKSTREAM_H
#define ZYPP_BASE_ZCKSTREAM_H
 
#include <iosfwd>
#include <streambuf>
#include <vector>
#include <zypp/base/SimpleStreambuf.h>
#include <zypp/base/fXstream.h>
 
typedef struct zckCtx zckCtx;
 
namespace zypp {
 
  namespace detail {
 
    class zckstreambufimpl {
      public:
 
        using error_type = std::string;
 
        ~zckstreambufimpl();
 
        bool isOpen   () const;
        bool canRead  () const;
        bool canWrite () const;
        bool canSeek  ( std::ios_base::seekdir way_r ) const;
 
        std::streamsize readData ( char * buffer_r, std::streamsize maxcount_r  );
        bool writeData( const char * buffer_r, std::streamsize count_r );
        off_t seekTo( off_t off_r, std::ios_base::seekdir way_r, std::ios_base::openmode omode_r );
        off_t tell() const;
 
        error_type error() const { return _lastErr; }
 
      protected:
        bool openImpl( const char * name_r, std::ios_base::openmode mode_r );
        bool closeImpl ();
 
      private:
        void setError ();
        int _fd = -1;
        bool _isReading = false;
        zckCtx *_zContext = nullptr;
        off_t _currfp = 0;
        error_type _lastErr;
 
    };
    using ZChunkStreamBuf = detail::SimpleStreamBuf<detail::zckstreambufimpl>;
  }
 
  using ifzckstream = detail::fXstream<std::istream,detail::ZChunkStreamBuf>;
 
  using ofzckstream = detail::fXstream<std::ostream,detail::ZChunkStreamBuf>;
}
 
#endif