/*
* Copyright 2011-2013 HTTL Team.
*
* Licensed 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 httl.spi.translators.templates;
import httl.Context;
import httl.Engine;
import httl.Node;
import httl.Template;
import httl.Visitor;
import httl.util.UnsafeByteArrayOutputStream;
import httl.util.UnsafeStringWriter;
import java.io.IOException;
import java.io.InputStream;
import java.io.OutputStream;
import java.io.Reader;
import java.text.ParseException;
import java.util.List;
import java.util.Locale;
import java.util.Map;
/**
* ProxyTemplate. (SPI, Prototype, ThreadSafe)
*
* @see httl.Engine#getTemplate(String)
*
* @author Liang Fei (liangfei0201 AT gmail DOT com)
*/
public class ProxyTemplate implements Template {
private final Template template;
public ProxyTemplate(Template template) {
this.template = template;
}
public Object evaluate() throws ParseException {
return evaluate(null);
}
public Object evaluate(Object parameters)
throws ParseException {
if (Context.getContext().getOut() instanceof OutputStream) {
UnsafeByteArrayOutputStream output = new UnsafeByteArrayOutputStream();
try {
render(parameters, output);
} catch (IOException e) {
throw new RuntimeException(e.getMessage(), e);
}
return output.toByteArray();
} else {
UnsafeStringWriter writer = new UnsafeStringWriter();
try {
render(parameters, writer);
} catch (IOException e) {
throw new RuntimeException(e.getMessage(), e);
}
return writer.toString();
}
}
public void render() throws IOException, ParseException {
render(null, Context.getContext().getOut());
}
public void render(Object stream) throws IOException, ParseException {
render(null, stream);
}
public void render(Object parameters, Object stream)
throws IOException, ParseException {
template.render(parameters, stream);
}
public String getName() {
return template.getName();
}
public String getEncoding() {
return template.getEncoding();
}
public Locale getLocale() {
return template.getLocale();
}
public long getLastModified() {
return template.getLastModified();
}
public long getLength() {
return template.getLength();
}
public String getSource() throws IOException {
return template.getSource();
}
public Reader openReader() throws IOException {
return template.openReader();
}
public Map<String, Class<?>> getVariables() {
return template.getVariables();
}
public InputStream openStream() throws IOException {
return template.openStream();
}
public int getOffset() {
return template.getOffset();
}
public Engine getEngine() {
return template.getEngine();
}
public Map<String, Template> getMacros() {
return template.getMacros();
}
public boolean isMacro() {
return template.isMacro();
}
public void accept(Visitor visitor) throws IOException, ParseException {
template.accept(visitor);
}
public Template getParent() {
return template.getParent();
}
public List<Node> getChildren() {
return template.getChildren();
}
}