/*
* Licensed to the Apache Software Foundation (ASF) under one or more
* contributor license agreements. See the NOTICE file distributed with
* this work for additional information regarding copyright ownership.
* The ASF licenses this file to You 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.tomcat.util.scan;
import java.io.IOException;
import java.net.URI;
import java.net.URISyntaxException;
import java.net.URL;
import java.util.regex.Matcher;
import org.apache.tomcat.Jar;
import org.apache.tomcat.util.buf.UriUtil;
/**
* Provide a mechanism to obtain objects that implement {@link Jar}.
*/
public class JarFactory {
private JarFactory() {
// Factory class. Hide public constructor.
}
public static Jar newInstance(URL url) throws IOException {
String urlString = url.toString();
if (urlString.startsWith("jar:file:")) {
if (urlString.endsWith("!/")) {
return new JarFileUrlJar(url, true);
} else {
return new JarFileUrlNestedJar(url);
}
} else if (urlString.startsWith("war:file:")) {
URL jarUrl = UriUtil.warToJar(url);
return new JarFileUrlNestedJar(jarUrl);
} else if (urlString.startsWith("file:")) {
return new JarFileUrlJar(url, false);
} else {
return new UrlJar(url);
}
}
public static URL getJarEntryURL(URL baseUrl, String entryName) throws IOException {
String baseExternal = baseUrl.toExternalForm();
if (baseExternal.startsWith("jar")) {
// Assume this is pointing to a JAR file within a WAR. Java doesn't
// support jar:jar:file:... so switch to Tomcat's war:file:...
baseExternal = baseExternal.replaceFirst("^jar:", "war:");
baseExternal = baseExternal.replaceFirst("!/", Matcher.quoteReplacement(UriUtil.getWarSeparator()));
}
URI uri;
try {
uri = new URI("jar:" + baseExternal + "!/" + entryName);
} catch (URISyntaxException e) {
throw new IOException(e);
}
return uri.toURL();
}
}