org.fxyz3d.importers.ImporterFinder Maven / Gradle / Ivy
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/*
* Copyright (c) 2014, Oracle and/or its affiliates.
* Copyright (c) 2013-2018, F(X)yz
*
* All rights reserved. Use is subject to license terms.
*
* This file is available and licensed under the following license:
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
*
* - Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* - 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.
* - Neither the name of Oracle Corporation 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
* OWNER 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 org.fxyz3d.importers;
import java.io.IOException;
import java.io.UncheckedIOException;
import java.lang.module.ModuleReader;
import java.lang.module.ResolvedModule;
import java.net.URL;
import java.net.URLClassLoader;
import java.util.ArrayList;
import java.util.List;
import java.util.Objects;
public class ImporterFinder {
public URLClassLoader addUrlToClassPath() {
try {
final List urls = loadFromPathScanning();
return new URLClassLoader((URL[]) urls.toArray(new URL[0]), this.getClass().getClassLoader());
} catch (IOException e) {
e.printStackTrace();
}
return null;
}
/**
* Scans all classes.
*
* @return a list of URLs
* @throws IOException
*/
private List loadFromPathScanning() throws IOException {
final List urlList = new ArrayList<>();
ModuleLayer.boot().configuration().modules().stream()
.map(ResolvedModule::reference)
.filter(rm -> !isSystemModule(rm.descriptor().name()))
.forEach(mref -> {
try (ModuleReader reader = mref.open()) {
reader.list()
.filter(c -> c.endsWith(".class"))
.map(this::processClassName)
.filter(Objects::nonNull)
.forEach(urlList::add);
} catch (IOException ioe) {
throw new UncheckedIOException(ioe);
}
});
return urlList;
}
private URL processClassName(final String name) {
String className = name.replace("\\", ".");
className = className.replace("/", ".");
if (className.contains("$")) {
return null;
}
if (className.contains(".bin")) {
className = className.substring(className.indexOf(".bin") + 4);
className = className.replace(".bin", "");
}
if (className.startsWith(".")) {
className = className.substring(1);
}
if (className.endsWith(".class")) {
className = className.substring(0, className.length() - 6);
}
Class clazz = null;
try {
clazz = Class.forName(className);
} catch (Throwable e) {
// ignored
}
if (clazz != null) {
return clazz.getProtectionDomain().getCodeSource().getLocation();
}
return null;
}
/**
* Return true if the given module name is a system module. There can be
* system modules in layers above the boot layer.
*/
private static boolean isSystemModule(final String moduleName) {
return moduleName.startsWith("java.")
|| moduleName.startsWith("javax.")
|| moduleName.startsWith("javafx.")
|| moduleName.startsWith("jdk.")
|| moduleName.startsWith("oracle.");
}
}