/*
* Copyright (c) 1996, 1998, Oracle and/or its affiliates. All rights reserved.
* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
*
* This code is free software; you can redistribute it and/or modify it
* under the terms of the GNU General Public License version 2 only, as
* published by the Free Software Foundation. Oracle designates this
* particular file as subject to the "Classpath" exception as provided
* by Oracle in the LICENSE file that accompanied this code.
*
* This code is distributed in the hope that it will be useful, but WITHOUT
* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
* version 2 for more details (a copy is included in the LICENSE file that
* accompanied this code).
*
* You should have received a copy of the GNU General Public License version
* 2 along with this work; if not, write to the Free Software Foundation,
* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
*
* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
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*/
package sun.tools.jar;
import sun.awt.image.URLImageSource;
import sun.awt.image.ImageDecoder;
import java.net.URL;
import java.net.JarURLConnection;
import java.util.jar.JarFile;
import java.util.jar.JarEntry;
import java.io.InputStream;
import java.io.IOException;
public class JarImageSource extends URLImageSource {
String mimeType;
String entryName = null;
URL url;
/**
* Create an image source from a Jar entry URL with the specified
* mime type.
*/
public JarImageSource(URL u, String type) {
super(u);
url = u;
mimeType = type;
}
/**
* Create an image source from a Jar file/entry URL
* with the specified entry name and mime type.
*/
public JarImageSource(URL u, String name, String type) {
this(u, type);
this.entryName = name;
}
protected ImageDecoder getDecoder() {
InputStream is = null;
try {
JarURLConnection c = (JarURLConnection)url.openConnection();
JarFile f = c.getJarFile();
JarEntry e = c.getJarEntry();
if (entryName != null && e == null) {
e = f.getJarEntry(entryName);
}
if (e == null || (e != null && entryName != null
&& (!(entryName.equals(e.getName()))))) {
return null;
}
is = f.getInputStream(e);
} catch (IOException e) {
return null;
}
ImageDecoder id = decoderForType(is, mimeType);
if (id == null) {
id = getDecoder(is);
}
return id;
}
}