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https://github.com/scm-manager/scm-manager.git
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109 lines
3.7 KiB
Java
109 lines
3.7 KiB
Java
/**
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* Copyright (c) 2010, Sebastian Sdorra
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions are met:
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*
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* 1. Redistributions of source code must retain the above copyright notice,
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* this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright notice,
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* this list of conditions and the following disclaimer in the documentation
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* and/or other materials provided with the distribution.
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* 3. Neither the name of SCM-Manager; nor the names of its
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* contributors may be used to endorse or promote products derived from this
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* software without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
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* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
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* DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE FOR ANY
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* DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
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* (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
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* LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON
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* ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
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* SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*
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* http://bitbucket.org/sdorra/scm-manager
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*
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*/
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package sonia.scm.api.rest;
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//~--- non-JDK imports --------------------------------------------------------
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import com.google.inject.Inject;
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import sonia.scm.template.Template;
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import sonia.scm.template.TemplateEngine;
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import sonia.scm.template.TemplateEngineFactory;
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//~--- JDK imports ------------------------------------------------------------
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import java.io.IOException;
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import java.io.OutputStream;
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import java.io.PrintWriter;
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import java.lang.annotation.Annotation;
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import java.lang.reflect.Type;
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import javax.ws.rs.WebApplicationException;
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import javax.ws.rs.core.MediaType;
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import javax.ws.rs.core.MultivaluedMap;
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import javax.ws.rs.ext.MessageBodyWriter;
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import javax.ws.rs.ext.Provider;
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import sonia.scm.template.Viewable;
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/**
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*
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* @author Sebastian Sdorra
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*/
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@Provider
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public class TemplateEngineViewable implements MessageBodyWriter<Viewable>
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{
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private final TemplateEngineFactory templateEngineFactory;
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@Inject
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public TemplateEngineViewable(TemplateEngineFactory templateEngineFactory)
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{
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this.templateEngineFactory = templateEngineFactory;
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}
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@Override
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public boolean isWriteable(Class<?> type, Type genericType, Annotation[] annotations, MediaType mediaType) {
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return type.isAssignableFrom(Viewable.class);
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}
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@Override
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public long getSize(Viewable viewable, Class<?> type, Type genericType, Annotation[] annotations, MediaType mediaType) {
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return -1;
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}
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@Override
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public void writeTo(Viewable viewable, Class<?> type, Type genericType, Annotation[] annotations, MediaType mediaType, MultivaluedMap<String, Object> httpHeaders, OutputStream entityStream) throws IOException, WebApplicationException {
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String path = viewable.getPath();
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TemplateEngine engine = templateEngineFactory.getEngineByExtension(path);
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if (engine == null)
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{
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throw new IOException("could not find template engine for ".concat(path));
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}
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Template template = engine.getTemplate(path);
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if (template == null)
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{
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throw new IOException("could not find template for ".concat(path));
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}
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PrintWriter writer = new PrintWriter(entityStream);
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template.execute(writer, viewable.getContext());
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writer.flush();
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}
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}
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