com.hazelcast.org.codehaus.commons.compiler.util.resource.ResourceFinders Maven / Gradle / Ivy
/*
* Janino - An embedded Java[TM] compiler
*
* Copyright (c) 2019 Arno Unkrig. All rights reserved.
*
* Redistribution and use in source and binary forms, with or without modification, are permitted provided that the
* following conditions are met:
*
* 1. Redistributions of source code must retain the above copyright notice, this list of conditions and the
* following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright notice, this list of conditions and the
* following disclaimer in the documentation and/or other materials provided with the distribution.
* 3. Neither the name of the copyright holder nor the names of its contributors may be used to endorse or promote
* products derived from this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES,
* INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
* DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
* SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
* WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
package com.hazelcast.org.codehaus.commons.compiler.util.resource;
import java.io.IOException;
import java.io.InputStream;
import java.net.URL;
import com.hazelcast.org.codehaus.commons.nullanalysis.Nullable;
/**
* Utility methods around the {@link ResourceFinder}.
*/
public final
class ResourceFinders {
private ResourceFinders() {}
/**
* @return Finds resources via classLoader{@code .getResource()}; all found resources are {@link
* LocatableResource}s
*/
public static ResourceFinder
getsResourceAsStream(final ClassLoader classLoader) {
return new ResourceFinder() {
@Override @Nullable public Resource
findResource(String resourceName) {
// "ClassLoader.getResource()" doesn't like leading slashes - not clear why.
if (resourceName.startsWith("/")) resourceName = resourceName.substring(1);
final URL url = classLoader.getResource(resourceName);
if (url == null) return null;
final String finalResourceName = resourceName;
return new LocatableResource() {
@Override public URL
getLocation() throws IOException { return url; }
@Override public InputStream
open() throws IOException { return url.openStream(); }
@Override public String
getFileName() { return finalResourceName; }
@Override public long
lastModified() { return 0; }
};
}
};
}
}