/*
 * ZipAccess.java
 *
 * Created on March 27, 2002, 10:44 AM
 */

package subjectData;

/**
 *
 * @author  Joset A. Etzel
 */

import java.io.*; import java.util.*; import java.util.zip.*;  //I added this - needed for file i/o & zip access
import javax.swing.filechooser.*; import java.io.File; import java.awt.*; import java.awt.event.*;
import javax.swing.*;

public class ZipAccess extends javax.swing.JInternalFrame {
    static final int intBUFFER = 2048;  //constant used for zip file access
    /** Creates new form ZipAccess */
    public ZipAccess() {
        initComponents();
    }

    /** This method is called from within the constructor to
     * initialize the form.
     * WARNING: Do NOT modify this code. The content of this method is
     * always regenerated by the Form Editor.
     */
    private void initComponents() {//GEN-BEGIN:initComponents
        cmdUnzip = new javax.swing.JButton();
        txtInPath = new javax.swing.JTextField();
        lblInFile = new javax.swing.JLabel();
        cmdPickFile = new javax.swing.JButton();
        cmdCompress = new javax.swing.JButton();
        lblOutFile = new javax.swing.JLabel();
        txtOutPath = new javax.swing.JTextField();
        cmdPickZip = new javax.swing.JButton();
        jPanel1 = new javax.swing.JPanel();
        
        getContentPane().setLayout(new java.awt.GridBagLayout());
        java.awt.GridBagConstraints gridBagConstraints1;
        
        setMaximizable(true);
        setTitle("Working with Zip Files!");
        setIconifiable(true);
        setResizable(true);
        setClosable(true);
        cmdUnzip.setText("Unzip the File");
        cmdUnzip.addActionListener(new java.awt.event.ActionListener() {
            public void actionPerformed(java.awt.event.ActionEvent evt) {
                cmdUnzipActionPerformed(evt);
            }
        });
        
        gridBagConstraints1 = new java.awt.GridBagConstraints();
        gridBagConstraints1.gridx = 2;
        gridBagConstraints1.gridy = 3;
        getContentPane().add(cmdUnzip, gridBagConstraints1);
        
        txtInPath.setPreferredSize(new java.awt.Dimension(200, 21));
        txtInPath.setMinimumSize(new java.awt.Dimension(200, 21));
        gridBagConstraints1 = new java.awt.GridBagConstraints();
        gridBagConstraints1.gridx = 1;
        gridBagConstraints1.gridy = 0;
        gridBagConstraints1.ipady = 2;
        getContentPane().add(txtInPath, gridBagConstraints1);
        
        lblInFile.setText("File to Compress:  ");
        gridBagConstraints1 = new java.awt.GridBagConstraints();
        gridBagConstraints1.gridx = 0;
        gridBagConstraints1.gridy = 0;
        gridBagConstraints1.anchor = java.awt.GridBagConstraints.EAST;
        getContentPane().add(lblInFile, gridBagConstraints1);
        
        cmdPickFile.setText("Select File");
        cmdPickFile.addActionListener(new java.awt.event.ActionListener() {
            public void actionPerformed(java.awt.event.ActionEvent evt) {
                cmdPickFileActionPerformed(evt);
            }
        });
        
        gridBagConstraints1 = new java.awt.GridBagConstraints();
        gridBagConstraints1.gridx = 2;
        gridBagConstraints1.gridy = 0;
        gridBagConstraints1.ipadx = 2;
        getContentPane().add(cmdPickFile, gridBagConstraints1);
        
        cmdCompress.setText("Compress the File");
        cmdCompress.addActionListener(new java.awt.event.ActionListener() {
            public void actionPerformed(java.awt.event.ActionEvent evt) {
                cmdCompressActionPerformed(evt);
            }
        });
        
        gridBagConstraints1 = new java.awt.GridBagConstraints();
        gridBagConstraints1.gridx = 1;
        gridBagConstraints1.gridy = 3;
        getContentPane().add(cmdCompress, gridBagConstraints1);
        
        lblOutFile.setText("Zip File:  ");
        gridBagConstraints1 = new java.awt.GridBagConstraints();
        gridBagConstraints1.gridx = 0;
        gridBagConstraints1.gridy = 1;
        gridBagConstraints1.anchor = java.awt.GridBagConstraints.WEST;
        getContentPane().add(lblOutFile, gridBagConstraints1);
        
        txtOutPath.setPreferredSize(new java.awt.Dimension(200, 21));
        txtOutPath.setMinimumSize(new java.awt.Dimension(200, 21));
        gridBagConstraints1 = new java.awt.GridBagConstraints();
        gridBagConstraints1.gridx = 1;
        gridBagConstraints1.gridy = 1;
        getContentPane().add(txtOutPath, gridBagConstraints1);
        
        cmdPickZip.setText("Select File");
        cmdPickZip.addActionListener(new java.awt.event.ActionListener() {
            public void actionPerformed(java.awt.event.ActionEvent evt) {
                cmdPickZipActionPerformed(evt);
            }
        });
        
        gridBagConstraints1 = new java.awt.GridBagConstraints();
        gridBagConstraints1.gridx = 2;
        gridBagConstraints1.gridy = 1;
        getContentPane().add(cmdPickZip, gridBagConstraints1);
        
        jPanel1.setMinimumSize(new java.awt.Dimension(30, 30));
        gridBagConstraints1 = new java.awt.GridBagConstraints();
        gridBagConstraints1.gridx = 2;
        gridBagConstraints1.gridy = 2;
        getContentPane().add(jPanel1, gridBagConstraints1);
        
        pack();
    }//GEN-END:initComponents

    private void cmdPickZipActionPerformed(java.awt.event.ActionEvent evt) {//GEN-FIRST:event_cmdPickZipActionPerformed
        //show a file chooser to let user pick a zip file for opening, or file to write if compressing.
        //JFileChooser comes with the ability to move around the directory structure
        
        JFileChooser frmFileOpen = new JFileChooser();  //declare a JFileChooser - the select file box
        frmFileOpen.setApproveButtonText("Select");  //have button say Select instead of Open
        int intResult = frmFileOpen.showOpenDialog(null);  //this returns if select or cancel was clicked
        File fileChosen = frmFileOpen.getSelectedFile();  //the file picked, if any
        if (intResult == JFileChooser.APPROVE_OPTION) { txtOutPath.setText(fileChosen.getPath()); }
        else if (intResult == JFileChooser.CANCEL_OPTION) { txtOutPath.setText(""); }

    }//GEN-LAST:event_cmdPickZipActionPerformed

    private void cmdCompressActionPerformed(java.awt.event.ActionEvent evt) {//GEN-FIRST:event_cmdCompressActionPerformed
        //compresses the file in txtPath; saves it as the same file name .zip
     try {
        BufferedInputStream origin = null;
        //FileOutputStream dest = new FileOutputStream("c:\\temp\\jotest.zip");
        FileOutputStream dest = new FileOutputStream(txtOutPath.getText());
        ZipOutputStream out = new ZipOutputStream(new BufferedOutputStream(dest));
        byte data[] = new byte[intBUFFER];
        
        FileInputStream fi = new FileInputStream(txtInPath.getText());
        origin = new BufferedInputStream(fi, intBUFFER);
        ZipEntry entry = new ZipEntry(txtInPath.getText());
        out.putNextEntry(entry);
        int count;
        while((count = origin.read(data, 0, intBUFFER)) != -1) { out.write(data, 0, count); }
        origin.close();
        out.close();
    } catch(Exception e) { e.printStackTrace(); }
            
    }//GEN-LAST:event_cmdCompressActionPerformed

    private void cmdPickFileActionPerformed(java.awt.event.ActionEvent evt) {//GEN-FIRST:event_cmdPickFileActionPerformed
        //show a file chooser to let user pick a text file for compression.
        //JFileChooser comes with the ability to move around the directory structure
        
        JFileChooser frmFileOpen = new JFileChooser();  //declare a JFileChooser - the select file box
        frmFileOpen.setApproveButtonText("Select");  //have button say Select instead of Open
        int intResult = frmFileOpen.showOpenDialog(null);  //this returns if select or cancel was clicked
        File fileChosen = frmFileOpen.getSelectedFile();  //the file picked, if any
        if (intResult == JFileChooser.APPROVE_OPTION) { txtInPath.setText(fileChosen.getPath()); }
        else if (intResult == JFileChooser.CANCEL_OPTION) { txtInPath.setText(""); }
    }//GEN-LAST:event_cmdPickFileActionPerformed

    private void cmdUnzipActionPerformed(java.awt.event.ActionEvent evt) {//GEN-FIRST:event_cmdUnzipActionPerformed
        int intInput = 0;
        
        try {
            BufferedInputStream is = null;
            ZipEntry entry;
            ZipFile zipfile = new ZipFile(txtOutPath.getText());
            Enumeration e = zipfile.entries();  //used if more than one file in the zip file
            while (e.hasMoreElements()) {
                entry = (ZipEntry) e.nextElement();
                System.out.println("Extracting: " + entry);
                is = new BufferedInputStream(zipfile.getInputStream(entry));
                while ((intInput = is.read()) != -1) { System.out.print((char)intInput); }
                is.close();
            }
        } catch(Exception e) { e.printStackTrace(); }
        
    }//GEN-LAST:event_cmdUnzipActionPerformed


    // Variables declaration - do not modify//GEN-BEGIN:variables
    private javax.swing.JButton cmdUnzip;
    private javax.swing.JTextField txtInPath;
    private javax.swing.JLabel lblInFile;
    private javax.swing.JButton cmdPickFile;
    private javax.swing.JButton cmdCompress;
    private javax.swing.JLabel lblOutFile;
    private javax.swing.JTextField txtOutPath;
    private javax.swing.JButton cmdPickZip;
    private javax.swing.JPanel jPanel1;
    // End of variables declaration//GEN-END:variables

}