ClassLoaderResources.java

/* ========================================================================
 * PlantUML : a free UML diagram generator
 * ========================================================================
 *
 * (C) Copyright 2009-2024, Arnaud Roques
 *
 * Project Info:  https://plantuml.com
 * 
 * If you like this project or if you find it useful, you can support us at:
 * 
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 * 
 * This file is part of PlantUML.
 *
 * PlantUML is free software; you can redistribute it and/or modify it
 * under the terms of the GNU General Public License as published by
 * the Free Software Foundation, either version 3 of the License, or
 * (at your option) any later version.
 *
 * PlantUML 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 General Public
 * License for more details.
 *
 * You should have received a copy of the GNU General Public
 * License along with this library; if not, write to the Free Software
 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301,
 * USA.
 *
 *
 * Original Author:  Arnaud Roques
 *
 */
package net.sourceforge.plantuml.openpdf;

import java.io.IOException;
import java.io.InputStream;

import org.openpdf.text.pdf.ResourceProvider;

/**
 * The resources of OpenPDF on the JVM: the files of src/main/resources/org/openpdf,
 * found through the class loaders.
 */
final class ClassLoaderResources implements ResourceProvider {

	@Override
	public InputStream open(String name) throws IOException {
		InputStream is = null;
		try {
			final ClassLoader contextClassLoader = Thread.currentThread().getContextClassLoader();
			if (contextClassLoader != null)
				is = contextClassLoader.getResourceAsStream(name);
		} catch (SecurityException e) {
			// try the others
		}
		if (is == null)
			is = ClassLoaderResources.class.getResourceAsStream("/" + name);
		if (is == null)
			is = ClassLoader.getSystemResourceAsStream(name);
		return is;
	}

}