scouter.util.BytesMap Maven / Gradle / Ivy
/*
* Copyright 2015 the original author or authors.
* @https://github.com/scouter-project/scouter
*
* 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 scouter.util;
import java.io.ByteArrayInputStream;
import java.io.IOException;
import java.io.InputStream;
import java.net.MalformedURLException;
import java.net.URL;
import java.net.URLConnection;
import java.net.URLStreamHandler;
import java.util.ArrayList;
import java.util.Hashtable;
import java.util.Iterator;
import java.util.List;
import java.util.Map;
/**
* @author Paul S.J. Kim([email protected])
*/
public class BytesMap {
private final Map table = new Hashtable();
public void put(String name, byte[] data) {
if (name == null || data == null)
return;
table.put(name, data);
}
public void remove(String name) {
if (name == null)
return;
table.remove(name);
}
public byte[] getBytes(String name) {
return table.get(name);
}
public List getResourceList() {
List urlList = new ArrayList();
Iterator itr = table.keySet().iterator();
while (itr.hasNext()) {
String key = itr.next();
urlList.add(getResource(key));
}
return urlList;
}
public URL getResource(String name) {
try {
return new URL(null, "bytes:///" + name, urlStreamHandler);
} catch (MalformedURLException e) {
throw new RuntimeException(e);
}
}
protected URLStreamHandler urlStreamHandler = new URLStreamHandler() {
protected URLConnection openConnection(URL u) throws IOException {
return new URLConnection(u) {
public void connect() throws IOException {
}
public InputStream getInputStream() throws IOException {
String name = this.getURL().getPath().substring(1);
byte[] b = table.get(name);
if (b == null) {
throw new IOException("unknown bytes name : " + name);
}
return new ByteArrayInputStream(b);
}
};
}
};
}