#include <iostream>
#include <string>
#include <fstream>
#include <sstream>
#include <cstdlib>
//#include <ostream>
#include <cmath>
#include <sys/stat.h>

using namespace std;

unsigned long GetFileSize(std::string filename)
{
    struct stat stat_buf;
    int rc = stat(filename.c_str(), &stat_buf);
    return rc == 0 ? stat_buf.st_size : -1;
}

int main(int argc, char* argv[])
{
    //define variables
    string filename1 = "output.txt";
    string filename2 = "output.vxl";
    bool wait = false;

    //read command line parameters
    if (argc > 1 && string(argv[1]) != "0") {filename1 = string(argv[1]);}
    if (argc > 2 && string(argv[2]) != "0") {filename2 = string(argv[2]);}
    if (argc > 3 && string(argv[0]).compare("wait")) {wait = true;}

    //show status
    std::cout << argv[0] << endl;
    cout << "input - " << filename1 << "  output - " << filename2 << endl;

    //read file into memory
    string filedata; unsigned long filesize;

    ifstream inputfile;
    stringstream strStream;

    inputfile.open(filename1.c_str());
    if ( !inputfile.is_open() ) //checks if file is open, closes with code 1 if not
            {cout << "File could not be opened." << endl; if (wait){cout << "Enter something to close." << endl; cin >> wait;}; return 1;}

    strStream << inputfile.rdbuf();
    filedata = strStream.str();
    inputfile.close();

    filesize = filedata.length();
    cout << filesize << " values read." << endl;

    //parse data and save as binary
    unsigned long n;
    string currentdata = "";
    char delimiter;
    char value;
    float percent;

        //find the delimiter
    for (n=0; n<5; n++)
        { if ( 47 > filedata.at(n) || filedata.at(n) > 58){delimiter = filedata.at(n);} }
    cout << "Delimter: " << delimiter << endl;

        //check if file is open, closes with code 2 if not
    ofstream outputfile( filename2.c_str(), ios::out | ios::binary);
    if ( !outputfile.is_open() ) //checks if file is open, closes with code 1 if not
            {cout << "File could not be created." << endl; if (wait){cout << "Enter something to close." << endl; cin >> wait;}; return 1;}

        //write values
    for (n=0; n<filesize; n++)
        {
        //if character is not delimiter and is not end of file then add to currentdata
        if ((filedata[n] != delimiter) && (n != filesize-1))
             {
            currentdata=currentdata+filedata[n];
             }
        //else write the value to file and reset currentdata
        else {
            value = atoi(currentdata.c_str());
            outputfile << value;
            currentdata = "";
             }

        //updates the current iteration counter
        if (n % (filesize/20+1) == 0)
             {
             cout << "\r" << "                                        " << "\r";
             cout << trunc((float(n) / filesize)*100) << "% - " << n << " out of " << filesize;
             }
        //if (n mod (trunc(length(buffer)/20)+1) = 0) then

        }

    cout << "\r" << "                                        " << "\r";
    cout << trunc((float(n) / filesize)*100) << "% - " << n << " out of " << filesize << endl;

    outputfile.close();

    cout << "Writing finished: " << filename2 << " (" << trunc(GetFileSize(filename2)/float(10000))/float(100) << "MB)." << endl;

    if (wait){cout << "Enter something to close." << endl; cin >> wait;}
    return 0;
}