/**
* 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.metamodel.util;
import java.io.InputStream;
import java.io.OutputStream;
import java.io.Serializable;
import java.net.URL;
/**
* A {@link Resource} based on a classpath entry
*/
public class ClasspathResource extends AbstractResource implements Serializable {
private static final long serialVersionUID = 1L;
private final String _resourcePath;
public ClasspathResource(String resourcePath) {
if (resourcePath == null) {
throw new IllegalArgumentException("Classpath resource path cannot be null");
}
_resourcePath = resourcePath;
}
@Override
public String toString() {
return "ClasspathResource[" + _resourcePath + "]";
}
/**
* Gets the name of the classpath entry
*
* @return
*/
public String getResourcePath() {
return _resourcePath;
}
@Override
public String getName() {
String name = _resourcePath;
final int lastSlash = name.lastIndexOf('/');
final int lastBackSlash = name.lastIndexOf('\\');
final int lastIndex = Math.max(lastSlash, lastBackSlash);
if (lastIndex != -1) {
final String lastPart = name.substring(lastIndex + 1);
if (!"".equals(lastPart)) {
return lastPart;
}
}
return name;
}
@Override
public String getQualifiedPath() {
return _resourcePath;
}
protected ClassLoader getClassLoader() {
return ClassLoader.getSystemClassLoader();
}
private UrlResource getUrlResourceDelegate() {
ClassLoader classLoader = getClassLoader();
URL url = classLoader.getResource(_resourcePath);
if (url == null && _resourcePath.startsWith("/")) {
url = classLoader.getResource(_resourcePath.substring(1));
}
if (url == null) {
return null;
}
return new UrlResource(url);
}
@Override
public OutputStream append() throws ResourceException {
return getUrlResourceDelegate().append();
}
@Override
public OutputStream write() throws ResourceException {
return getUrlResourceDelegate().write();
}
@Override
public boolean isReadOnly() {
return true;
}
@Override
public boolean isExists() {
UrlResource delegate = getUrlResourceDelegate();
if (delegate == null) {
return false;
}
return delegate.isExists();
}
@Override
public long getSize() {
UrlResource delegate = getUrlResourceDelegate();
if (delegate == null) {
return -1;
}
return delegate.getSize();
}
@Override
public long getLastModified() {
UrlResource delegate = getUrlResourceDelegate();
if (delegate == null) {
return -1;
}
return delegate.getLastModified();
}
@Override
public InputStream read() throws ResourceException {
return getUrlResourceDelegate().read();
}
}