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Java API for Natural Language Generation
/*
* The contents of this file are subject to the Mozilla Public License
* Version 1.1 (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.mozilla.org/MPL/
*
* Software distributed under the License is distributed on an "AS IS"
* basis, WITHOUT WARRANTY OF ANY KIND, either express or implied. See the
* License for the specific language governing rights and limitations
* under the License.
*
* The Original Code is "Simplenlg".
*
* The Initial Developer of the Original Code is Ehud Reiter, Albert Gatt and Dave Westwater.
* Portions created by Ehud Reiter, Albert Gatt and Dave Westwater are Copyright (C) 2010-11 The University of Aberdeen. All Rights Reserved.
*
* Contributor(s): Ehud Reiter, Albert Gatt, Dave Wewstwater, Roman Kutlak, Margaret Mitchell, Saad Mahamood.
*/
// package simplenlg.format.english;
package simplenlg.format.english;
import java.util.ArrayList;
import java.util.List;
import simplenlg.framework.CoordinatedPhraseElement;
import simplenlg.framework.DocumentCategory;
import simplenlg.framework.DocumentElement;
import simplenlg.framework.ElementCategory;
import simplenlg.framework.ListElement;
import simplenlg.framework.NLGElement;
import simplenlg.framework.NLGModule;
import simplenlg.framework.StringElement;
/**
*
* This processing module adds some simple plain HTML formatting to the
* SimpleNLG output. This includes the following:
*
* - Adding the document title to the beginning of the text.
* - Adding section titles in the relevant places.
* - Adding appropriate new line breaks for ease-of-reading.
* - Indenting list items with ' * '.
*
*
*
* @author D. Westwater, University of Aberdeen ~ for the TextFormatter;
*
J Christie, University of Aberdeen ~ for HTMLFormatter
* @version 4.0 original TextFormatter Version;
version 0.0 HTMLFormatter
*
*/
//public class TextFormatter extends NLGModule {
public class HTMLFormatter extends NLGModule {
// Modifications by James Christie to convert TextFormatter into a HTML Formatter
@Override
public void initialise() {
// Do nothing
} // constructor
@Override
public NLGElement realise(NLGElement element) { // realise a single element
NLGElement realisedComponent = null;
StringBuffer realisation = new StringBuffer();
if(element != null) {
ElementCategory category = element.getCategory();
List components = element.getChildren();
//NB: The order of the if-statements below is important!
// check if this is a canned text first
if(element instanceof StringElement) {
realisation.append(element.getRealisation());
} else if(category instanceof DocumentCategory) {
// && element instanceof DocumentElement
switch((DocumentCategory) category){
case DOCUMENT :
String title = element instanceof DocumentElement ? ((DocumentElement) element).getTitle() : null;
realisation.append("" + title + "
");
for(NLGElement eachComponent : components) {
realisedComponent = realise(eachComponent);
if(realisedComponent != null) {
realisation.append(realisedComponent.getRealisation());
}
}
break;
case SECTION :
title = element instanceof DocumentElement ? ((DocumentElement) element).getTitle() : null;
if(title != null) {
String sectionTitle = ((DocumentElement) element).getTitle();
realisation.append("" + sectionTitle + "
");
}
for(NLGElement eachComponent : components) {
realisedComponent = realise(eachComponent);
if(realisedComponent != null) {
realisation.append(realisedComponent.getRealisation());
}
}
break;
case LIST :
realisation.append("");
for(NLGElement eachComponent : components) {
realisedComponent = realise(eachComponent);
if(realisedComponent != null) {
realisation.append(realisedComponent.getRealisation());
}
}
realisation.append("
");
break;
case ENUMERATED_LIST :
realisation.append("");
for(NLGElement eachComponent : components) {
realisedComponent = realise(eachComponent);
if(realisedComponent != null) {
realisation.append(realisedComponent.getRealisation());
}
}
realisation.append("
");
break;
case PARAGRAPH :
if(null != components && 0 < components.size()) {
realisedComponent = realise(components.get(0));
if(realisedComponent != null) {
realisation.append("");
realisation.append(realisedComponent.getRealisation());
}
for(int i = 1; i < components.size(); i++ ) {
if(realisedComponent != null) {
realisation.append(" ");
}
realisedComponent = realise(components.get(i));
if(realisedComponent != null) {
realisation.append(realisedComponent.getRealisation());
}
}
realisation.append("
");
}
break;
case SENTENCE :
realisation.append(element.getRealisation());
break;
case LIST_ITEM :
realisation.append("");
for(NLGElement eachComponent : components) {
realisedComponent = realise(eachComponent);
if(realisedComponent != null) {
realisation.append(realisedComponent.getRealisation());
if(components.indexOf(eachComponent) < components.size() - 1) {
realisation.append(' ');
}
}
}
realisation.append(" ");
break;
}
// also need to check if element is a listelement (items can
// have embedded lists post-orthography) or a coordinate
} else if(element instanceof ListElement || element instanceof CoordinatedPhraseElement) {
for(NLGElement eachComponent : components) {
realisedComponent = realise(eachComponent);
if(realisedComponent != null) {
realisation.append(realisedComponent.getRealisation()).append(' ');
}
}
}
}
return new StringElement(realisation.toString());
} // realise ~ single element
@Override
public List realise(List elements) { // realise a list of elements
List realisedList = new ArrayList();
if(elements != null) {
for(NLGElement eachElement : elements) {
realisedList.add(realise(eachElement));
}
}
return realisedList;
} // realise ~ list of elements
} // class