#include <cstring>
#include <cstdlib>
#include <climits>
#include <iostream>
#include <string>
#include <strstream> // deprecated
#include <sstream>




// ========================
#define TRACE    std::cout << "\nLine-" << __LINE__ << ": --- " << __FUNCTION__ << " ---" << std::endl
#define START    std::cout << "\nLine-" << __LINE__ << ": >>> START  " << __FUNCTION__ << " <<<" << std::endl
#define FINISH   std::cout << "Line-" << __LINE__ << ": <<< FINISH " << __FUNCTION__ << " >>>" << std::endl << std::endl
#define SHOW(x)  std::cout << "[ Line-" << __LINE__ << ", " << __FUNCTION__ << "] " << #x << " = <" << x << ">" << std::endl
	
// ---------------------------
void showCompilerInfo(std::ostream& o_stream)
{
	o_stream << "Compiler: ";
#if (defined __hpux && defined __HP_aCC)
	o_stream << "HP C/aC++ "
	         << __HP_aCC; 

#elif (defined __INTEL_COMPILER)
	o_stream << "Intel(R) C++ Intel(R) 64 Compiler, Version "
	         << __INTEL_COMPILER;
	         
#elif (defined __GNUC__ && !defined __INTEL_COMPILER) 
	o_stream << "GNU g++, Version "
	         << __GNUC__;
#ifdef __GNUC_MINOR__
	o_stream << "." << __GNUC_MINOR__;

#ifdef __GNUC_PATCHLEVEL__
#if __GNUC_PATCHLEVEL__
    o_stream << "." << __GNUC_PATCHLEVEL__;

#endif      // #ifdef __GNUC_PATCHLEVEL__
#endif      // #if __GNUC_PATCHLEVEL__
#endif      // #ifdef __GNUC_MINOR__


#else
#error Unknown compiler
#endif

	o_stream << std::endl << std::flush;
}
	
// -------------
char* pStrStream    = 0;
char* pStringStream = 0;
	
// -------------
static void putToStrStream(std::ostream& i_stream, const char* i_pText)
{
	START;
	
	SHOW(pStrStream);
	SHOW(strlen(pStrStream));
	SHOW(i_pText);
	SHOW(strlen(i_pText));
	
	i_stream << i_pText;
	
	SHOW(pStrStream);
	SHOW(strlen(pStrStream));
	
	FINISH;
	
}

// -------------
static void putToStringStream(std::ostream& i_stream, const char* i_pText)
{
	START;
	
	SHOW(pStringStream);
	SHOW(strlen(pStringStream));
	SHOW(i_pText);
	SHOW(strlen(i_pText));
	
	// i_stream.clear();
	// i_stream.seekp(0, std::ios::beg);
	i_stream << i_pText;
	// i_stream << std::ends;
	
	SHOW(pStringStream);
	SHOW(strlen(pStringStream));
	
	FINISH;
}

// ----------------
void doStrStream(const char* i_pText, std::size_t i_size)
{
	
		START;
		
		SHOW(i_size);
		
		std::strstream stream(pStrStream, i_size);
    SHOW(stream.rdbuf()->pcount());  
    SHOW(stream.str()); 
         
		putToStrStream(stream, i_pText);
		SHOW(stream.rdbuf()->pcount());
		
		FINISH;
} 

// ----------------
void doStringStream(const char* i_pText, std::size_t i_size)
{
	
		START;
		
		SHOW(i_size);
		
		std::stringstream stream;
		stream.rdbuf()->pubsetbuf(pStringStream, i_size);
	  // stream.rdbuf()->str("");
	  
	  SHOW(stream.tellp()); 
	  SHOW(stream.str().size());
	  SHOW(stream.rdbuf()->str().size());
	  SHOW(stream.rdbuf()->in_avail()); 
	  
	  SHOW(stream.str());
	  SHOW(stream.str().c_str());
	  SHOW(stream.str().data());
		putToStringStream(stream, i_pText);
		SHOW(stream.str());
		SHOW(stream.str().c_str());
		SHOW(stream.str().data());
		
		SHOW(stream.tellp()); 
	  SHOW(stream.str().size());
	  SHOW(stream.rdbuf()->str().size());
	  SHOW(stream.rdbuf()->in_avail()); 
	  
	  FINISH;
} 



// ------------
int main()
{
	
	system ("uname -a");
	showCompilerInfo(std::cout);
	std::cout << "Data Model: " << (sizeof(void*) * CHAR_BIT) << " bits" << std::endl;
	
	pStrStream    = new char [100];
	pStringStream = new char [100];
	
	memset (pStrStream, 'P', 100);
	pStrStream[70] = 0;
	memset (pStringStream, 'Q', 100);
	pStringStream[90] = 0;

	
	TRACE;
	doStrStream("ABCDEF", 45);
	doStrStream("XYZ", 25);
	
	
	TRACE;
	doStringStream("abcdef", 45);
	doStringStream("xyz", 25);
	
	
	// ------------------
	delete[] pStrStream;
	delete[] pStringStream;
	
	return 0;
}