#ifndef INCLUDED_TTEMPSTR
#define INCLUDED_TTEMPSTR

//-----------------------------------------------------------------------------
//
// GarageGames.com
//
// Usage Examples:
//
// FILE *handle = fopen( TTempStr<256>("%s:\\%s\\%s.%s", drive, path, file, extension). "r" );
//
// TTempStr<48> text;
// strcpy(text, "this is a ");
// strcat(text, "test");
//
// TTempStr<24> buffer("hello %s", "world");
// puts(buffer);
// buffer.set("who is number %d?", 2);
// puts(buffer);
//
// puts( buffer.set("that's %s folks!", "all") );
//
//-----------------------------------------------------------------------------

#include <stdio.h>
#include <stdarg.h>
#include <assert.h>

template<int Size> struct TTempStr
{
private:
   char mBuffer[Size];
   
public:
   TTempStr() 
   {
      mBuffer[0] = '\0';
   }

   TTempStr(const char *format, ...) 
   { 
      // Assert that the format string is not the internal buffer      
      assert(format != mBuffer);                         
      va_list argList;
      va_start(argList, format);
      int length = vsprintf(mBuffer, format, argList);
      // Assert that there was no buffer overflow
      assert(length<Size);
      va_end(argList);
   }
   
   inline char* set(const char *format, ...)
   {
      // Assert that the format string is not the internal buffer      
      assert(format != mBuffer);                         
      va_list argList;
      va_start(argList, format);
      int length = vsprintf(mBuffer, format, argList);
      // Assert that there was no buffer overflow
      assert(length<Size);
      va_end(argList);
      return mBuffer;
   }
   
   inline operator char*() 
   { 
      return mBuffer; 
   }
};


#endif