/**
* Licensed to the Apache Software Foundation (ASF) under one
* or more contributor license agreements. See the NOTICE file
* distributed with this work for additional information
* regarding copyright ownership. The ASF licenses this file
* to you under the Apache License, Version 2.0 (the
* "License"); you may not use this file except in compliance
* with the License. You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing,
* software distributed under the License is distributed on an
* "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
* KIND, either express or implied. See the License for the
* specific language governing permissions and limitations
* under the License.
*/
package org.jooby.internal.ftl;
import static java.util.Objects.requireNonNull;
import java.io.FileNotFoundException;
import java.io.StringWriter;
import java.nio.charset.Charset;
import java.util.HashMap;
import java.util.Map;
import org.jooby.MediaType;
import org.jooby.Renderer;
import org.jooby.View;
import freemarker.template.Configuration;
import freemarker.template.SimpleHash;
import freemarker.template.Template;
import freemarker.template.TemplateModel;
import freemarker.template.TemplateNotFoundException;
public class Engine implements View.Engine {
private Configuration freemarker;
private String suffix;
private XssDirective xss;
public Engine(final Configuration freemarker, final String suffix, final XssDirective xss) {
this.freemarker = requireNonNull(freemarker, "Freemarker config is required.");
this.suffix = suffix;
this.xss = xss;
}
@Override
public void render(final View view, final Renderer.Context ctx) throws Exception {
String name = view.name() + suffix;
Template template = template(name, ctx.charset());
Map<String, Object> hash = new HashMap<>();
hash.put("_vname", view.name());
hash.put("_vpath", template.getName());
hash.put("xss", xss);
// locals
hash.putAll(ctx.locals());
// model
hash.putAll(view.model());
TemplateModel model = new SimpleHash(hash, new FtlWrapper(freemarker.getObjectWrapper()));
// TODO: remove string writer
StringWriter writer = new StringWriter();
// output
template.process(model, writer);
ctx.type(MediaType.html)
.send(writer.toString());
}
private Template template(final String name, final Charset charset) throws Exception {
try {
return freemarker.getTemplate(name, charset.name());
} catch (TemplateNotFoundException ex) {
throw new FileNotFoundException(ex.getTemplateName());
}
}
@Override
public String name() {
return "freemarker";
}
@Override
public String toString() {
return name();
}
}