/*
* Copyright (C) 2015 Red Hat, Inc. and/or its affiliates.
*
* 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.jboss.errai.reflections.vfs;
import com.google.common.collect.AbstractIterator;
import java.io.IOException;
import java.net.URL;
import java.util.Enumeration;
import java.util.Iterator;
import java.util.zip.ZipEntry;
/** an implementation of {@link org.jboss.errai.reflections.vfs.Vfs.Dir} for {@link java.util.zip.ZipFile} */
public class ZipDir implements Vfs.Dir {
final java.util.zip.ZipFile zipFile;
private String path;
public ZipDir(URL url) {
this(url.getPath());
}
public ZipDir(String p) {
path = p;
if (path.startsWith("jar:")) { path = path.substring("jar:".length()); }
if (path.startsWith("file:")) { path = path.substring("file:".length()); }
if (path.endsWith("!/")) { path = path.substring(0, path.lastIndexOf("!/")) + "/"; }
try { zipFile = new java.util.zip.ZipFile(this.path); }
catch (IOException e) {throw new RuntimeException(e);}
}
public String getPath() {
return path;
}
public Iterable<Vfs.File> getFiles() {
return new Iterable<Vfs.File>() {
public Iterator<Vfs.File> iterator() {
return new AbstractIterator<Vfs.File>() {
final Enumeration<? extends ZipEntry> entries = zipFile.entries();
protected Vfs.File computeNext() {
return entries.hasMoreElements() ? new ZipFile(ZipDir.this, entries.nextElement()) : endOfData();
}
};
}
};
}
public void close() {
if (zipFile != null) {
try {zipFile.close();}
catch (IOException e) {throw new RuntimeException("could not close zip file " + path, e);}
}
}
@Override
public String toString() {
return zipFile.getName();
}
}