180 lines
4 KiB
C++
180 lines
4 KiB
C++
/******************************************************************************/
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/* BINARY READER/WRITER FOR STREAMS *******************************************/
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/******************************************************************************/
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#ifndef _H_EBCL_BINARYSTREAMS
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#define _H_EBCL_BINARYSTREAMS
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#include <ebcl/Streams.hh>
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namespace ebcl {
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/*= OBJECT READER/WRITER TEMPLATES ===========================================*/
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/*
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* This pair of templates must be specialized to handle specific types.
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*/
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struct T_BinaryReader;
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struct T_BinaryWriter;
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template< typename T >
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struct T_ObjectReader
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{
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static T read( T_BinaryReader const& reader );
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};
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template< typename T >
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struct T_ObjectWriter
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{
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static void write( T_BinaryWriter const& writer , T const& string );
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};
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// Helper macros to declare and define readers and writers
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#define M_DECLARE_OBJECT_READER( Type ) \
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template< > \
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struct T_ObjectReader< Type > \
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{ \
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static Type read( T_BinaryReader const& ); \
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}
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#define M_DEFINE_OBJECT_READER( Type ) \
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Type T_ObjectReader< Type >::read( T_BinaryReader const & reader )
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#define M_DECLARE_OBJECT_WRITER( Type ) \
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template< > \
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struct T_ObjectWriter< Type > \
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{ \
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static void write( T_BinaryWriter const& , \
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Type const& ); \
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}
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#define M_DEFINE_OBJECT_WRITER( Type ) \
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void T_ObjectWriter< Type >::write( T_BinaryWriter const & writer , \
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Type const & item )
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/*= READER ===================================================================*/
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struct T_BinaryReader
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{
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private:
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A_InputStream& stream_;
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const E_Endian endian_;
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public:
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T_BinaryReader( ) = delete;
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explicit T_BinaryReader( A_InputStream& stream , E_Endian endian = E_Endian::NATIVE ) noexcept;
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T_BinaryReader( T_BinaryReader const& other ) noexcept = delete;
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T_BinaryReader( T_BinaryReader&& other ) noexcept = delete;
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A_InputStream& stream( ) const;
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E_Endian endian( ) const;
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template< typename T >
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T readNumericNative( ) const;
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template< typename T >
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T readNumericLittleEndian( ) const;
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template< typename T >
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T readNumericBigEndian( ) const;
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template< typename T >
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T read( ) const;
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private:
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template<
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typename T ,
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bool IsNum = std::is_integral< T >::value
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|| std::is_floating_point< T >::value
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>
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struct T_Reader_ { };
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template< typename T >
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struct T_Reader_< T , true >
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{
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static T read( T_BinaryReader const& reader );
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};
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template< typename T >
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struct T_Reader_< T , false >
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{
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static T read( T_BinaryReader const& reader );
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};
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};
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/*= WRITER ===================================================================*/
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struct T_BinaryWriter
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{
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private:
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A_OutputStream& stream_;
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const E_Endian endian_;
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public:
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T_BinaryWriter( ) noexcept = delete;
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explicit T_BinaryWriter( A_OutputStream& stream , E_Endian endian = E_Endian::NATIVE ) noexcept;
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T_BinaryWriter( T_BinaryWriter const& other ) noexcept = delete;
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T_BinaryWriter( T_BinaryWriter&& other ) noexcept = delete;
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A_OutputStream& stream( ) const;
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E_Endian endian( ) const;
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template< typename T >
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void writeNumericNative( T value ) const;
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template< typename T >
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void writeNumericLittleEndian( T const& value ) const;
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template< typename T >
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void writeNumericBigEndian( T const& value ) const;
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template< typename T >
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void write( T const& value ) const;
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private:
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template<
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typename T ,
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bool IsNum = std::is_integral< T >::value
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|| std::is_floating_point< T >::value
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>
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struct T_Writer_ { };
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template< typename T >
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struct T_Writer_< T , true >
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{
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static void write( T_BinaryWriter const& writer , T value );
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};
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template< typename T >
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struct T_Writer_< T , false >
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{
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static void write( T_BinaryWriter const& writer , T const& value );
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};
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};
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/*= STREAM INTERFACES FOR OBJECTS THAT ARE NEEDED BY STREAMS =================*/
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M_DECLARE_OBJECT_READER( T_Character );
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M_DECLARE_OBJECT_WRITER( T_Character );
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M_DECLARE_OBJECT_READER( T_String );
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M_DECLARE_OBJECT_WRITER( T_String );
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M_DECLARE_OBJECT_WRITER( T_StringBuilder );
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} // namespace ebcl
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#endif // _H_EBCL_BINARYSTREAMS
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#include <ebcl/inline/BinaryStreams.hh>
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