#include <string>
#include <boost/regex.hpp>
#include <iostream>
#include <fstream>
#include <sstream>

using namespace std;
using namespace boost;

string filter( const string in )
{
    regex expr("\"(\\w+):(\\w+)%(\\w+)\"");
    string fmt("$1:$2*$3,\n");
    ostringstream ostring;
    ostream_iterator<char> oi(ostring);

    regex_replace( oi, in.begin(), in.end(), expr, fmt, (match_default | format_no_copy) );

    return ostring.str();
}

int main(int argc, const char* argv[])
{
    if( argc < 3 )
    {
        cout<< "Please enter 2 filenames(e.g. In.txt Out.txt)" << endl;
        return 1;
    }

    ifstream in( argv[1] );
    ofstream out( argv[2] );
    ostringstream buf;

    buf << in.rdbuf();
    out << filter( buf.str() ) << flush;
}