TextCompiler.h

#ifndef __TEXTCOMPILER_H__
#define __TEXTCOMPILER_H__

namespace TextCompiler
{
	// Write an indirect value
	template <typename type> inline void WriteValue(type const * const ptr, idFile *out, bool byteSwap=false) 
	{ 
		if(out != NULL)
		{
			if(!byteSwap)
			{
				out->Write(ptr, sizeof(type));
			}
			else
			{
				byte const * const p = (byte *)ptr;

				for(int i=sizeof(type)-1;i>=0;i--)
				{
					out->Write(&(p[i]), 1);
				}
			}

		}
	}

	// Write a direct value
	template <typename type> inline void WriteValue(type const val, idFile *out, bool byteSwap=false) 
	{ 
		if(out != NULL)
		{
			if(!byteSwap)
			{
				out->Write(&val, sizeof(type));
			}
			else
			{
				byte const * const p = (byte *)&val;

				for(int i=sizeof(type)-1;i>=0;i--)
				{
					out->Write(&(p[i]), 1);
				}
			}
 		}
	}

	template <typename type> inline type ReadValue(idFile *in) 
	{ 
		type ret; 
		
		in->Read(&ret, sizeof(type));
		return ret;
	}

	// specialization write for idStr's
	template <> inline void WriteValue(idStr const * const ptr, idFile *out, bool byteSwap) 
	{ 
		if(out != NULL)
		{
			// if less than 32, then we don't need a trailing null
			// this is because 5 bits can be used to represent string length in the token header
			// zero length strings end up needing to be null terminated
			if((ptr->Length() < 32) && (ptr->Length() != 0))
			{
				out->Write(ptr->c_str(), ptr->Length());
			}
			else
			{
				out->Write(ptr->c_str(), ptr->Length()+1);
			}
		}
	}

	// specialization read for idStr's
	template <> inline idStr ReadValue(idFile *in) 
	{ 
		char c;
		idStr str;

		in->Read(&c, 1);
		while(c != '\0')
		{
			str.Append(c);
			in->Read(&c, 1);
		}

		str.Append(c);

		return str;
	}

	template <typename type> inline void WriteArray(type const * const ptr, unsigned int count, idFile *out)
	{
		WriteValue<unsigned int>(&count, out);
		for(unsigned int i=0;i<count; i++)
		{
			WriteValue<type>(&(ptr[i]), out);
		}
	}

	template <typename type> inline type *ReadArray(idFile *in, unsigned int *count=NULL) 
	{ 
		unsigned int len; 
		len = ReadValue<unsigned int>(in);
		type *buffer = (type *)malloc(len*sizeof(type)); 
		type *ptr = buffer;
		for(unsigned int i=0;i<len;i++)
		{
			*ptr = ReadValue<type>(in);
			ptr++;
		}
		if(count != NULL)
			*count = len;
		return buffer;
	}

	template <typename type> inline void WriteIdList(idList<type> const * const ptr, idFile *out)
	{
		WriteArray<type>(ptr->Ptr(), ptr->Num(), out);
	}

	template <typename type> inline idList<type> ReadIdList(idFile *in)
	{
		idList<type> ret;
		ret.Clear();
		unsigned int count;
		idAutoPtr<type> array(ReadArray<type>(in, &count));

		for(unsigned int i=0;i<count;i++)
			ret.Append(array[i]);

		return ret;
	}
};

#endif