JavaPackerUnpacker/PackUnpack.java at main · Deepraj09/JavaPackerUnpacker · GitHub

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package Pack;

import java.io.File;
import java.io.FileInputStream;
import java.io.FileOutputStream;


class PackUnpack
{
  FileOutputStream fobj1;
  FileInputStream fobj2;

  public int Unpack(String IPfile)
  {
    try
    {
      File obj1=new File(IPfile);
      if(!obj1.exists())
      {
    	  return -1;
      }
      this.fobj2 = new FileInputStream(IPfile);
      byte[] magic = new byte[10];
      byte[] b1 = new byte[100];

      int ret = 0;


      this.fobj2.read(magic);
      String str = new String(magic);


      if (!str.equals("Deepraj"))
      {
        return -1;
      }
      while ((ret = this.fobj2.read(b1)) != -1)
      {

        str = new String(b1);
        String[] strarr = str.split("\\s+");
        int size = Integer.valueOf(strarr[1]).intValue();
        File f1 = new File(strarr[0]);
        f1.createNewFile();
        this.fobj1 = new FileOutputStream(strarr[0]);
        byte[] b2 = new byte[size];
        this.fobj2.read(b2);
        this.fobj1.write(b2);

        this.fobj1.close();
      }
      this.fobj2.close();
    }
    catch (Exception exception) {}


    return 1;
  }


  public int Pack(String Dir, String OPfile)
  {
    int k = 0;

    String[] ext = { "txt", "cpp", "c", "java" };
    //System.out.println("jeetshah11".length());


    try
    {
      File obj = new File(Dir);
      if (!obj.exists())
      {
        return -2;
      }
      this.fobj1 = new FileOutputStream(OPfile);
      this.fobj1.write("Deepraj".getBytes());
      File[] farr = obj.listFiles();
      for (int j = 0; j < farr.length; j++)
      {


        String[] arr = farr[j].getName().split("\\.");

        for (k = 0; k < ext.length; k++)
        {


          if (arr[1].equals(ext[k]))
          {
            break;
          }
        }


        if (k != ext.length)
        {


          this.fobj2 = new FileInputStream(String.valueOf(Dir) + "\\" + farr[j].getName());
          String str = String.format("%-99s\n", new Object[] { String.valueOf(farr[j].getName()) + " " + String.valueOf(farr[j].length()) });
          this.fobj1.write(str.getBytes());
          int i;
          while ((i = this.fobj2.read()) != -1)
          {


            System.out.println((char)i);

            this.fobj1.write(i);
          }


          this.fobj2.close();
        }
      }  this.fobj1.close();


    }
    catch (Exception exception)
    {

    }


    return 1;
  }
}