1 files changed, 91 insertions, 0 deletions
diff --git a/indexlib/bitio.tcc b/indexlib/bitio.tcc
new file mode 100644
index 000000000..2779cfedb
--- /dev/null
+++ b/indexlib/bitio.tcc
@@ -0,0 +1,91 @@
+#include "boost-compat/static_assert.hpp"
+#include "boost-compat/remove_cv.hpp"
+#ifdef HAVE_BOOST
+#include <boost/type_traits/is_same.hpp>
+#endif
+
+
+namespace byte_io {
+
+	template <typename T>
+	inline T no_const( const volatile T v ) {
+		return v;
+	}
+
+	template<typename T>
+	inline
+	void write( unsigned char* out, const volatile T d ) {
+		write( out, no_const( d ) );
+	}
+	
+
+	template <typename T>
+	inline
+	T read( const unsigned char* out ) {
+		//BOOST_STATIC_ASSERT( !( ::boost::is_same<T,typename  ::boost::remove_cv<T>::type>::value ) );
+		return read<typename ::boost::remove_cv<T>::type>( out );
+	}
+
+	template<>
+	inline
+	void write<uint8_t>( unsigned char* out, uint8_t d ) {
+		*out = d;
+	}
+
+	template<>
+	inline
+	uint8_t read<uint8_t>( const unsigned char* in ) {
+		return *in;
+	}
+
+	template<>
+	struct byte_lenght_struct<uint8_t> {
+		static const int value = 1;
+	};
+
+	template<>
+	inline
+	void write<uint16_t>( unsigned char* out, uint16_t d ) {
+		*out++ = ( ( d >> 0 ) & 0xff );
+		*out++ = ( ( d >> 8 ) & 0xff );
+	}
+
+	template<>
+	inline
+	uint16_t read<uint16_t>( const unsigned char* in ) {
+		uint16_t res = 0;
+		res |= ( ( *in++ & 0xff ) << 0 );
+		res |= ( ( *in++ & 0xff ) << 8 );
+		return res;
+	}
+
+	template<>
+	struct byte_lenght_struct<uint16_t> {
+		static const int value = 2;
+	};
+
+	template<>
+	inline
+	void write<uint32_t>( unsigned char* out, uint32_t d ) {
+		*out++ = ( ( d >>  0 ) & 0xff );
+		*out++ = ( ( d >>  8 ) & 0xff );
+		*out++ = ( ( d >> 16 ) & 0xff );
+		*out++ = ( ( d >> 24 ) & 0xff );
+	}
+
+	template<>
+	inline
+	uint32_t read<uint32_t>( const unsigned char* in ) {
+		uint32_t res = 0;
+		res |= ( ( *in++ & 0xff ) <<  0 );
+		res |= ( ( *in++ & 0xff ) <<  8 );
+		res |= ( ( *in++ & 0xff ) << 16 );
+		res |= ( ( *in++ & 0xff ) << 24 );
+		return res;
+	}
+	template<>
+	struct byte_lenght_struct<uint32_t> {
+		static const int value = 4;
+	};
+}
+