/*
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 * and open the template in the editor.
 */

package FromSites;
import java.io.*;
import java.util.*;
import java.util.zip.*;
/**
 *
 * @author Nikhil D Saini
 */
public class ExtractFileUsingCommandLine {

        public static void main(String args[])
        {

                /*
                 * This program expects two command line arguments
                 *
                 * 1. Path of zip file
                 * 2. Destination path for extracted file
                 */

                 //fetch command line arguments
                 String strZipFile = args[0];
                String strDestinationPath = args[1];

                 if(strZipFile == null || strZipFile.equals(""))
                 {
                        System.out.println("Invalid source file");
                        System.exit(0);
                 }

                 if(strDestinationPath == null || strDestinationPath.equals(""))
                 {
                        System.out.println("Invalid destination path");
                        System.exit(0);
                 }

                try
                {
                        //create FileInputStream from the source zip file
                        FileInputStream fin = new FileInputStream(strZipFile);

                        //create ZipInputStream from FileInputStream object
                        ZipInputStream zin = new ZipInputStream(fin);

                        //get the first entry from the source zip file
                        ZipEntry entry = zin.getNextEntry();

                        //crate OutputStream to extract the entry from zip file
                        OutputStream os = new FileOutputStream(strDestinationPath + "/" + entry.getName());


                        byte[] buffer = new byte[1024];
                        int length;

                        //read the entry from zip file and extract it to disk
                        while( (length = zin.read(buffer)) > 0)
                        {
                                os.write(buffer, 0, length);
                        }

                        //close the streams
                        os.close();

                        //close the zip file
                        zin.close();

                        System.out.println("File Extracted from zip file");
                }
                catch(IOException e)
                {
                        System.out.println("IOException :" + e);
                }


        }

}