Deserializer.java

import java.io.FileInputStream;
import java.io.FileNotFoundException;
import java.io.IOException;
import java.io.ObjectInputStream;
import java.lang.reflect.Array;
import java.util.ArrayList;

public class Deserializer {
    public static void main(String[] args) {
        String filepath = args[0];
        int count = 0;
        try {
            ArrayList<String> elems = new ArrayList<String>();
            FileInputStream fis = new FileInputStream(filepath);
            ObjectInputStream ois = new ObjectInputStream(fis);
            while (ois.available() == 0) {
                Object obj = ois.readObject();
                Class c = obj.getClass();
                String[] arr = new String[Array.getLength(obj)];
                for (int i = 0; i < Array.getLength(obj); i++) {
                    if (c.getComponentType() == float.class) {
                        arr[i] = String.valueOf(Array.getFloat(obj, i));
                    }
                    if (c.getComponentType() == short.class) {
                        arr[i] = String.valueOf(Array.getShort(obj, i));
                    }
                }
                // 最初の頂点座標は (vx, vy, vz, tx, ty) になっているようなので分離
                if (count == 0) {
                    ArrayList<String> vertices = new ArrayList<String>();
                    ArrayList<String> texcoord = new ArrayList<String>();
                    for (int i = 0; i < arr.length; i++) {
                        if (i % 5 < 3) {
                            vertices.add(arr[i]);
                        } else {
                            texcoord.add(arr[i]);
                        }
                    }
                    elems.add("[" + String.join(",", vertices) + "]");
                    elems.add("[" + String.join(",", texcoord) + "]");
                } else {
                    elems.add("[" + String.join(",", arr) + "]");
                }
                count++;
            }
            fis.close();
            ois.close();

            System.out.print("[" + String.join(",", elems) + "]");
        } catch (FileNotFoundException e) {
            e.printStackTrace();
        } catch (IOException e) {
            e.printStackTrace();
        } catch (ClassNotFoundException e) {
            e.printStackTrace();
        }
    }
}