package boondock.holdem.Jars;

import java.lang.*;
import java.util.*;
import java.util.zip.*;
import java.io.*;

public class JarExtractor
{
	private Hashtable m_sizes=new Hashtable();
	private Hashtable m_jarContents=new Hashtable();
	private String m_jarFileName;
	public JarExtractor(String jarFileName) {
		this.m_jarFileName=jarFileName;
		initialize();
	}
	public byte[] getImageData(String name) {
		return (byte[])m_jarContents.get(name);
	}
	private void initialize() {
		ZipFile zf=null;
		try {
			// let's get the sizes.
			zf=new ZipFile(m_jarFileName);
			Enumeration e=zf.entries();
			while (e.hasMoreElements()) {
			ZipEntry ze=(ZipEntry)e.nextElement();
			m_sizes.put(ze.getName(),new Integer((int)ze.getSize()));
			}
			zf.close();
			zf=null;
			// put resources into m_jarContents
			FileInputStream fis=new FileInputStream(m_jarFileName);
			BufferedInputStream bis=new BufferedInputStream(fis);
			ZipInputStream zis=new ZipInputStream(bis);
			ZipEntry ze=null;
			while ((ze=zis.getNextEntry())!=null) {
				if (ze.isDirectory()) {
					continue;
				}
				int size=(int)ze.getSize();
				if (size==-1) {
					size=((Integer)m_sizes.get(ze.getName())).intValue();
				}
				byte[] b=new byte[(int)size];
				int rb=0;
				int chunk=0;
				while (((int)size - rb) > 0) {
					chunk=zis.read(b,rb,(int)size - rb);
					if (chunk==-1){
						break;
					}
					rb+=chunk;
				}
				zis.close();
				m_jarContents.put(ze.getName(),b);
			}
		}
		catch (NullPointerException e){/*handle exception*/}
		catch (FileNotFoundException e){/*handle exception*/}
		catch (IOException e){/*handle exception*/}
	}
}