    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}