/*
* 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
}