DF2csv

import java.io.BufferedWriter;
import java.io.File;
import java.io.FileWriter;
import java.io.IOException;
import java.awt.image.BufferedImage;

import javax.imageio.ImageIO;

public class Main {


    static File png;
    static File csv;
    static BufferedImage img= null;

    static int gridWidth = 1;
    static int gridHeight = 1;

    Main(){};

    /**
     * @param args pngname;csvname;RGB as Hex;sign;gridWidth;gridHeight
     */
    public static void main(String[] args) {
        if (args[0].equals("help")){
            System.out.println("A simple Program to convert a png into an csv, which then can be imported into quickfort, which can be used to design a Fortress in Dwarf Fortress" +
                    "\n\n" +
                    "The Number of Arguments must be 6 or 4:\n" +
                    "pngpath: path to the png \n" +
                    "csvname: path to the csv that should be generated \n" +
                    "RGB_as_6Hex: the colour which should be used to determinate the place of the sign. Must consist of 6 hexnumbers \n" +
                    "sign: The letter, or sign which will be used. f.e. d for dig \n" +
                    "gridWidth: How many pixels should be jumped horizontally. 1 means every pixel \n" +
                    "gridHeight: hom many pixels should be jumped vertically. 1 means every pixel\n" +
                    "alpha gets ignored, so care that it has a completely different colour");
            System.exit(0);
        }
        if ((args.length > 6) || (args.length != 4 && args.length != 6))
        {
            System.out.println("Wrong Number of Arguments!\n" +
                    "Must be 6:\n" +
                    " pngname csvname RGB_as_6Hex sign gridWidth gridHeight\n" +
                    "or 4: \n" +
                    " pngname csvname RGB_as_6Hex sign \n" +
                    "  grid is set to 1\n" +
                    "write help as argument for help" );
            System.exit(2);
            }
        if (args.length == 6){
            if ((args[4].equals("0")) || (args[5].equals("0"))){
                System.out.println("gridsize isn't allowed to be zero. \n" +
                        "write help as argument for help");
                System.exit(3);
            }
            gridWidth = Integer.valueOf(args[4]);
            gridHeight = Integer.valueOf(args[5]);
        }
        if (args[2].length() > 6){
            System.out.println("Colour Bitmap too long, Max 6 HexNumbers \n" +
                    "White = FFFFFF\n" +
                    "Black = 000000\n" +
                    "Red = FF0000\n" +
                    "Green = 00FF00\n" +
                    "Blue = 0000FF");
            System.exit(2);}

    try{
        png = new File(args[0]);
        if (!png.exists()){
            System.out.println("Error: pngFile doesn't exists");
            System.exit(1);
        }
        csv = new File(args[1]);
        if (!csv.exists()){
            csv.createNewFile();
        };

        //png read
        img = ImageIO.read(png);
        BufferedWriter out =new BufferedWriter( new FileWriter(csv));
        int col = Integer.valueOf(args[2],16) & 0xFFFFFF;
//      String cox = "000000";
//      int col = Integer.valueOf(cox, 16);

        for(int h = 0; h < img.getHeight();h+=gridHeight){
        for(int w = 0; w < img.getWidth();w += gridWidth){
            String s = "";
//          int g = img.getRGB(w, h) ;
            if( (img.getRGB(w, h) & 0x00FFFFFF) == col)
            {
                s =""+args[3];
            }
            out.write(s);
            out.write(';');
            }
        out.write("\n");
        }
        out.close();
        System.out.println("Size:\n" +
                "Heigh:" + (double)img.getHeight()/gridHeight + "\n" +
                "Width:" + (double)img.getWidth()/gridWidth);

        System.out.println("Done...");
        System.exit(0);
        // TODO Auto-generated method stub
    } catch (IOException e) { e.printStackTrace();

    }

    }

}