libreoffice/scripting/workben/installer/ZipData.java

package installer;

import java.io.*;
import java.util.*;
import java.util.zip.*;
import java.awt.*;
import java.awt.event.*;
import javax.swing.*;

public class ZipData
{
    public ZipData(String file) {
    }

    public boolean extractEntry(String entry, String destination,
        JLabel statusLabel) {

        OutputStream out = null;
        InputStream in = null;

        System.out.println("Copying: " + entry);
        System.out.println("To: " + destination);

    if (statusLabel != null) {
        statusLabel.setText("Copying " + entry);
    }

        String entryName;
        if (entry.lastIndexOf("/") != -1) {
            entryName = entry.substring(entry.lastIndexOf("/") + 1);
        }
        else {
            entryName = entry;
        }

        String destName;
        if (destination.lastIndexOf(File.separator) != -1) {
            destName = destination.substring(destination.lastIndexOf(File.separator) + 1);
        }
        else {
            destName = destination;
        }

        if (!destName.equals(entryName))
            destination = destination.concat(entryName);

        System.out.println("Unzipping " + entry + " to " + destination);

    try {
            out = new FileOutputStream(destination);
        }
        catch (IOException ioe) {
            System.err.println("Error opening " + destination +
                ": " + ioe.getMessage());

            if (statusLabel != null)
                statusLabel.setText("Error opening" + destination +
                    "see SFramework.log for more information");

            return false;
        }

        if (entry.startsWith("/") == false)
            entry = "/" + entry;

        in = this.getClass().getResourceAsStream(entry);
        if (in == null) {
            System.err.println("File " + entry + " not found in jar file");

            if (statusLabel != null)
                statusLabel.setText("Failed extracting " + entry +
                    "see SFramework.log for more information");

            return false;
        }

        try {
            byte[] bytes = new byte[1024];
            int len;

            while ((len = in.read(bytes)) != -1)
                out.write(bytes, 0, len);
        }
        catch (IOException ioe) {
            System.err.println("Error writing " + destination + ": " +
                ioe.getMessage());

            if (statusLabel != null)
                statusLabel.setText("Failed writing " + destination +
                    "see SFramework.log for more information");
            return false;
        }
        finally {
            try {
                in.close();
                out.close();
            }
            catch (IOException ioe) {
            }
        }
        return true;
    }
}