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Common library used by some SonarLint flavors
/*
* Sonar Classloader
* Copyright (C) 2015 SonarSource
* [email protected]
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 3 of the License, or (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this program; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02
*/
package org.sonar.classloader;
import java.io.IOException;
import java.net.URL;
import java.util.Collection;
import java.util.Enumeration;
class DefaultClassloaderRef implements ClassloaderRef {
private final Mask mask;
private final ClassLoader classloader;
DefaultClassloaderRef(ClassLoader classloader, Mask mask) {
this.classloader = classloader;
this.mask = mask;
}
@Override
public Class loadClassIfPresent(String classname) {
if (mask.acceptClass(classname)) {
try {
return classloader.loadClass(classname);
} catch (ClassNotFoundException ignored) {
// excepted behavior. Return null if class does not exist in this classloader
}
}
return null;
}
@Override
public URL loadResourceIfPresent(String name) {
if (mask.acceptResource(name)) {
return classloader.getResource(name);
}
return null;
}
@Override
public void loadResources(String name, Collection appendTo) {
if (mask.acceptResource(name)) {
try {
Enumeration resources = classloader.getResources(name);
while (resources.hasMoreElements()) {
appendTo.add(resources.nextElement());
}
} catch (IOException e) {
throw new IllegalStateException(String.format("Fail to load resources named '%s'", name), e);
}
}
}
}