gtkradiant/tools/urt/libs/bytestreamutils.h

#if !defined( INCLUDED_BYTESTREAMUTILS_H )
#define INCLUDED_BYTESTREAMUTILS_H

#include <algorithm>

#if defined( _MSC_VER )

typedef signed short int16_t;
typedef unsigned short uint16_t;
typedef signed int int32_t;
typedef unsigned int uint32_t;

#else

#define _ISOC9X_SOURCE  1
#define _ISOC99_SOURCE  1

#define __USE_ISOC9X    1
#define __USE_ISOC99    1

#include <stdint.h>

#endif


template<typename InputStreamType, typename Type>
inline void istream_read_little_endian( InputStreamType& istream, Type& value ){
	istream.read( reinterpret_cast<typename InputStreamType::byte_type*>( &value ), sizeof( Type ) );
#if defined( __BIG_ENDIAN__ )
	std::reverse( reinterpret_cast<typename InputStreamType::byte_type*>( &value ), reinterpret_cast<typename InputStreamType::byte_type*>( &value ) + sizeof( Type ) );
#endif
}

template<typename InputStreamType, typename Type>
inline void istream_read_big_endian( InputStreamType& istream, Type& value ){
	istream.read( reinterpret_cast<typename InputStreamType::byte_type*>( &value ), sizeof( Type ) );
#if !defined( __BIG_ENDIAN__ )
	std::reverse( reinterpret_cast<typename InputStreamType::byte_type*>( &value ), reinterpret_cast<typename InputStreamType::byte_type*>( &value ) + sizeof( Type ) );
#endif
}

template<typename InputStreamType>
inline void istream_read_byte( InputStreamType& istream, typename InputStreamType::byte_type& b ){
	istream.read( &b, 1 );
}


template<typename InputStreamType>
inline int16_t istream_read_int16_le( InputStreamType& istream ){
	int16_t value;
	istream_read_little_endian( istream, value );
	return value;
}

template<typename InputStreamType>
inline uint16_t istream_read_uint16_le( InputStreamType& istream ){
	uint16_t value;
	istream_read_little_endian( istream, value );
	return value;
}

template<typename InputStreamType>
inline int32_t istream_read_int32_le( InputStreamType& istream ){
	int32_t value;
	istream_read_little_endian( istream, value );
	return value;
}

template<typename InputStreamType>
inline uint32_t istream_read_uint32_le( InputStreamType& istream ){
	uint32_t value;
	istream_read_little_endian( istream, value );
	return value;
}

template<typename InputStreamType>
inline float istream_read_float32_le( InputStreamType& istream ){
	float value;
	istream_read_little_endian( istream, value );
	return value;
}

template<typename InputStreamType>
inline typename InputStreamType::byte_type istream_read_byte( InputStreamType& istream ){
	typename InputStreamType::byte_type b;
	istream.read( &b, sizeof( typename InputStreamType::byte_type ) );
	return b;
}

#endif