// requires libcurl
#include <curl/curl.h>
#include <iostream>
#include <string.h>
#include <fstream>

int main(int argc, char *argv[]){
	if(argc != 3){
		std::cout << "usage: " << argv[0] << " <input> <output>";
		return 0;
	}
	std::string encoded;
	CURL *curl = curl_easy_init();
	char somedata[256];
	std::ifstream in(argv[1], std::ios::in | std::ios::binary);
	if (in)
	{
		in.seekg(0, std::ios::end);
		encoded.resize(in.tellg());
		in.seekg(0, std::ios::beg);
		in.read(&encoded[0], encoded.size());
		in.close();
	}
	int outlength;
    char *cres = curl_easy_unescape(curl, encoded.c_str(), encoded.length(), &outlength);
    std::string res(cres, cres + outlength);
    curl_free(cres);
    curl_easy_cleanup(curl);
	std::ofstream myfile2;
	myfile2.open(argv[2]);
	myfile2 << res;
	myfile2.close();
	return 0;
}