001// Copyright 2007, 2011 The Apache Software Foundation
002//
003// Licensed under the Apache License, Version 2.0 (the "License");
004// you may not use this file except in compliance with the License.
005// You may obtain a copy of the License at
006//
007//     http://www.apache.org/licenses/LICENSE-2.0
008//
009// Unless required by applicable law or agreed to in writing, software
010// distributed under the License is distributed on an "AS IS" BASIS,
011// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
012// See the License for the specific language governing permissions and
013// limitations under the License.
014
015package org.apache.tapestry5.dom;
016
017import org.apache.tapestry5.ioc.internal.util.InternalUtils;
018
019import java.io.PrintWriter;
020
021/**
022 * Representation of a document type. Note that technically, a Doctype isn't a node in an xml document; hence this
023 * doesn't extend node.
024 */
025public class DTD
026{
027    private final String name;
028
029    private final String publicId;
030
031    private final String systemId;
032
033    public DTD(String name, String publicId, String systemId)
034    {
035        assert InternalUtils.isNonBlank(name);
036
037        this.name = name;
038        this.publicId = publicId;
039        this.systemId = systemId;
040    }
041
042    public void toMarkup(PrintWriter writer)
043    {
044        if (publicId != null)
045        {
046            if (systemId != null)
047            {
048                writer.printf("<!DOCTYPE %s PUBLIC \"%s\" \"%s\">", name, publicId, systemId);
049            } else
050            {
051                writer.printf("<!DOCTYPE %s PUBLIC \"%s\">", name, publicId);
052            }
053        } else if (systemId != null)
054        {
055            writer.printf("<!DOCTYPE %s SYSTEM \"%s\">", name, systemId);
056        } else
057        {
058            writer.printf("<!DOCTYPE %s>", name);
059        }
060    }
061}