/*
* Copyright (c) 2004-2010, P. Simon Tuffs (simon@simontuffs.com)
* All rights reserved.
*
* See the full license at http://one-jar.sourceforge.net/one-jar-license.html
* This license is also included in the distributions of this software
* under doc/one-jar-license.txt
*/
package com.simontuffs.onejar;
import java.io.IOException;
import java.io.InputStream;
import java.net.FileNameMap;
import java.net.URL;
import java.net.URLConnection;
import java.net.URLStreamHandler;
/**
* @author simon@simontuffs.com
*
*/
public class Handler extends URLStreamHandler {
/**
* This protocol name must match the name of the package in which this class
* lives.
*/
public static String PROTOCOL = "onejar";
/**
* @see java.net.URLStreamHandler#openConnection(java.net.URL)
*/
protected URLConnection openConnection(final URL u) throws IOException {
final String resource = u.getPath();
return new URLConnection(u) {
public void connect() {
}
public String getContentType() {
FileNameMap fileNameMap = java.net.URLConnection.getFileNameMap();
String contentType = fileNameMap.getContentTypeFor(resource);
if (contentType == null)
contentType = "text/plain";
return contentType;
}
public InputStream getInputStream() throws IOException {
// Use the Boot classloader to get the resource. There
// is only one per one-jar.
JarClassLoader cl = Boot.getClassLoader();
InputStream is = cl.getByteStream(resource);
// sun.awt image loading does not like null input streams returned here.
// Throw IOException (probably better anyway).
if (is == null)
throw new IOException("cl.getByteStream() returned null for " + resource);
return is;
}
};
}
}