001/**
002 *   GRANITE DATA SERVICES
003 *   Copyright (C) 2006-2013 GRANITE DATA SERVICES S.A.S.
004 *
005 *   This file is part of the Granite Data Services Platform.
006 *
007 *   Granite Data Services is free software; you can redistribute it and/or
008 *   modify it under the terms of the GNU Lesser General Public
009 *   License as published by the Free Software Foundation; either
010 *   version 2.1 of the License, or (at your option) any later version.
011 *
012 *   Granite Data Services is distributed in the hope that it will be useful,
013 *   but WITHOUT ANY WARRANTY; without even the implied warranty of
014 *   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser
015 *   General Public License for more details.
016 *
017 *   You should have received a copy of the GNU Lesser General Public
018 *   License along with this library; if not, write to the Free Software
019 *   Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301,
020 *   USA, or see <http://www.gnu.org/licenses/>.
021 */
022
023package org.granite.generator.gsp;
024
025import java.io.FileNotFoundException;
026import java.net.URI;
027
028import org.granite.generator.Input;
029import org.granite.generator.Listener;
030import org.granite.generator.Output;
031import org.granite.generator.TemplateUri;
032import org.granite.generator.Transformer;
033import org.granite.generator.exception.TemplateUriException;
034import org.granite.util.URIUtil;
035
036/**
037 * @author Franck WOLFF
038 */
039public abstract class AbstractGroovyTransformer<I extends Input<?>, O extends Output<?>, C extends GroovyConfiguration>
040        extends Transformer<I, O, C> {
041
042        public AbstractGroovyTransformer() {
043                super();
044        }
045
046        public AbstractGroovyTransformer(GroovyConfiguration config, Listener listener) {
047                super(config, listener);
048        }
049
050        protected GroovyTemplateFactory getTemplateFactory() {
051                return getConfig().getGroovyTemplateFactory();
052        }
053
054    protected GroovyTemplate getTemplate(TemplateUri templateUri) throws TemplateUriException {
055        return getTemplate(templateUri.getUri(), templateUri.isBase());
056    }
057
058    protected GroovyTemplate getTemplate(String path, boolean base) throws TemplateUriException {
059        GroovyTemplateFactory factory = getTemplateFactory();
060        try {
061                path = URIUtil.normalize(path);
062                URI uri = new URI(path);
063                String schemeSpecificPart = uri.getSchemeSpecificPart();
064                if (schemeSpecificPart == null || schemeSpecificPart.length() == 0)
065                        throw new FileNotFoundException("Template path cannot be empty: " + uri);
066                
067                if (URIUtil.isFileURI(uri) && !URIUtil.isAbsolute(uri)) {
068                        URI parent = getConfig().getWorkingDirectory().toURI();
069                        if (parent != null)
070                                uri = parent.resolve(uri.getRawSchemeSpecificPart());
071                }
072            return factory.getTemplate(uri, base);
073        } catch (Exception e) {
074            throw new TemplateUriException(path, e);
075        }
076    }
077}