/**
*
* Copyright 2003-2004 The Apache Software Foundation
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package org.apache.geronimo.deployment.util;
import java.io.File;
import java.io.IOException;
import java.io.InputStream;
import java.net.JarURLConnection;
import java.net.URL;
import java.net.URLConnection;
import java.util.jar.JarFile;
import java.util.zip.ZipException;
/**
* The URLType class assigns type to resources, i.e. files or URLs.
* <p>
* The following types are available:
* <ul>
* <li><b>UNPACKED_ARCHIVE</b> - directory with META-INF/MANIFEST.MF
* <li><b>PACKED_ARCHIVE</b> - file with META-INF/MANIFEST.MF
* <li><b>COLLECTION</b> - directory with no META-INF/MANIFEST.MF
* <li><b>RESOURCE</b> - none of the above
* </ul>
*
* @version $Rev: 53762 $ $Date: 2004-10-04 16:54:53 -0600 (Mon, 04 Oct 2004) $
*/
public class URLType {
public static final String MANIFEST_LOCATION = "META-INF/MANIFEST.MF";
public static final URLType RESOURCE = new URLType("RESOURCE");
public static final URLType COLLECTION = new URLType("COLLECTION");
public static final URLType PACKED_ARCHIVE = new URLType("PACKED_ARCHIVE");
public static final URLType UNPACKED_ARCHIVE = new URLType("UNPACKED_ARCHIVE");
public static URLType getType(File file) throws IOException {
if (file.isDirectory()) {
// file is a directory - see if it has a manifest
// we check for an actual manifest file to keep things consistent with a packed archive
if (new File(file, MANIFEST_LOCATION).exists()) {
return UNPACKED_ARCHIVE;
} else {
return COLLECTION;
}
} else {
// we have a regular file - see if it contains a manifest
try {
JarFile jar = null;
try {
jar = new JarFile(file);
jar.getManifest();
} finally {
if (jar != null) {
jar.close();
}
}
return PACKED_ARCHIVE;
} catch (ZipException e) {
return RESOURCE;
}
}
}
/**
* Returns the type of url
*
* @param url
* @return type of the url
* @throws IOException whenever there're problems with accessing portion of the url
*/
public static URLType getType(URL url) throws IOException {
if (url.toString().endsWith("/")) {
URL metaInfURL = new URL(url, MANIFEST_LOCATION);
URLConnection urlConnection = metaInfURL.openConnection();
urlConnection.connect();
try {
InputStream is = urlConnection.getInputStream();
is.close();
return UNPACKED_ARCHIVE;
} catch (IOException e) {
return COLLECTION;
}
} else {
URL jarURL = new URL("jar:" + url.toString() + "!/");
JarURLConnection jarConnection = (JarURLConnection) jarURL.openConnection();
try {
jarConnection.getManifest();
return PACKED_ARCHIVE;
} catch (ZipException e) {
return RESOURCE;
}
}
}
private final String desc;
private URLType(final String desc) {
this.desc = desc;
}
public boolean equals(Object obj) {
return this == obj;
}
public String toString() {
return desc;
}
}