#include <fstream>
#include <iostream>

#include <libxml/nanohttp.h>
#include <libxml/xmlmemory.h>



const char * URL = "http://users.pandora.be/tfautre/dennis_richie_ken_thompson_pdp11.jpeg";
const char * Filename = "image.jpg";



#define INCORRECT // comment out this line to use the correct behavior




#if defined INCORRECT

//////////////////////////////////////////////////////////////////////
// This version saves the file in text mode
//////////////////////////////////////////////////////////////////////

int main(int argc, char * argv[])
{
	xmlNanoHTTPInit();

	if (xmlNanoHTTPFetch(URL, Filename, 0) == -1)
		std::cerr << "Error: xmlNanoHTTPFetch() == -1" << std::endl;

	xmlNanoHTTPCleanup();
}



#else

//////////////////////////////////////////////////////////////////////
// This version saves the file in binary mode
//////////////////////////////////////////////////////////////////////

int main(int argc, char * argv[])
{
	// Initialize
	xmlNanoHTTPInit();

	// Open HTTP connection
	char * pContentType = 0;
	void * Ctxt = 0;

	Ctxt = xmlNanoHTTPOpen(URL, &pContentType);

	if (Ctxt == 0)
		std::cerr << "ERROR: xmlNanoHTTPOpen() == 0" << std::endl;

	if (xmlNanoHTTPReturnCode(Ctxt) != 200)
		std::cerr << "ERROR: HTTP Code != OK" << std::endl;

	// Open output file
	std::ofstream File(Filename, std::ios::binary);

	if (! File)
		std::cerr << "ERROR: couldn't open '" << Filename << "' for output" << std::endl;

	// Write to file
	const int Size = 2048;
	char Buffer[Size];
	int Count;

	while ((Count = xmlNanoHTTPRead(Ctxt, Buffer, Size)) > 0)
		File.write(Buffer, Count);

	if (Count == 0)
		std::cerr << "STATUS: Connection closed" << std::endl;

	if (Count == -1)
		std::cerr << "ERROR: xmlNanoHTTPRead() == -1" << std::endl;

	if (xmlNanoHTTPReturnCode(Ctxt) != 200)
		std::cerr << "ERROR: HTTP Code != OK" << std::endl;

	// Free ressources
	xmlFree(pContentType);
	xmlNanoHTTPClose(Ctxt);
	xmlNanoHTTPCleanup();
}



#endif