gtkradiant/tools/urt/libs/bytestreamutils.h

100 lines
2.6 KiB
C++

#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