/*
* Copyright 2004 Sun Microsystems, Inc.
*
* 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 com.sun.syndication.io.impl;
import com.sun.syndication.feed.rss.Channel;
import com.sun.syndication.feed.rss.Description;
import com.sun.syndication.feed.rss.Image;
import com.sun.syndication.feed.rss.Item;
import com.sun.syndication.io.FeedException;
import org.jdom.Attribute;
import org.jdom.Document;
import org.jdom.Element;
import org.jdom.Namespace;
import java.util.List;
import java.util.Date;
/**
* Feed Generator for RSS 0.91
* <p/>
*
* @author Elaine Chien
*
*/
public class RSS091UserlandGenerator extends RSS090Generator {
private String _version;
public RSS091UserlandGenerator() {
this("rss_0.91U","0.91");
}
protected RSS091UserlandGenerator(String type,String version) {
super(type);
_version = version;
}
protected String getVersion() {
return _version;
}
protected Namespace getFeedNamespace() {
return Namespace.NO_NAMESPACE;
}
protected Document createDocument(Element root) {
return new Document(root);
}
protected Element createRootElement(Channel channel) {
Element root = new Element("rss",getFeedNamespace());
Attribute version = new Attribute("version", getVersion());
root.setAttribute(version);
root.addNamespaceDeclaration(getContentNamespace());
generateModuleNamespaceDefs(root);
return root;
}
protected void populateFeed(Channel channel,Element parent) throws FeedException {
addChannel(channel,parent);
}
protected void addChannel(Channel channel,Element parent) throws FeedException {
super.addChannel(channel,parent);
Element eChannel = parent.getChild("channel",getFeedNamespace());
addImage(channel,eChannel);
addTextInput(channel,eChannel);
addItems(channel,eChannel);
}
protected void populateChannel(Channel channel,Element eChannel) {
super.populateChannel(channel,eChannel);
String language = channel.getLanguage();
if (language != null) {
eChannel.addContent(generateSimpleElement("language", language));
}
String rating = channel.getRating();
if (rating != null) {
eChannel.addContent(generateSimpleElement("rating", rating));
}
String copyright = channel.getCopyright();
if (copyright != null) {
eChannel.addContent(generateSimpleElement("copyright", copyright));
}
Date pubDate = channel.getPubDate();
if (pubDate != null) {
eChannel.addContent(generateSimpleElement("pubDate", DateParser.formatRFC822(pubDate)));
}
Date lastBuildDate = channel.getLastBuildDate();
if (lastBuildDate != null) {
eChannel.addContent(generateSimpleElement("lastBuildDate", DateParser.formatRFC822(lastBuildDate)));
}
String docs = channel.getDocs();
if (docs != null) {
eChannel.addContent(generateSimpleElement("docs", docs));
}
String managingEditor = channel.getManagingEditor();
if (managingEditor != null) {
eChannel.addContent(generateSimpleElement("managingEditor", managingEditor));
}
String webMaster = channel.getWebMaster();
if (webMaster != null) {
eChannel.addContent(generateSimpleElement("webMaster", webMaster));
}
List skipHours = channel.getSkipHours();
if (skipHours != null && skipHours.size()>0) {
eChannel.addContent(generateSkipHoursElement(skipHours));
}
List skipDays = channel.getSkipDays();
if (skipDays != null && skipDays.size()>0) {
eChannel.addContent(generateSkipDaysElement(skipDays));
}
}
protected Element generateSkipHoursElement(List hours) {
Element skipHoursElement = new Element("skipHours",getFeedNamespace());
for (int i = 0; i < hours.size(); i++) {
skipHoursElement.addContent(generateSimpleElement("hour", hours.get(i).toString()));
}
return skipHoursElement;
}
protected Element generateSkipDaysElement(List days) {
Element skipDaysElement = new Element("skipDays");
for (int i = 0; i < days.size(); i++) {
skipDaysElement.addContent(generateSimpleElement("day", days.get(i).toString()));
}
return skipDaysElement;
}
protected void populateImage(Image image,Element eImage) {
super.populateImage(image,eImage);
int width = image.getWidth();
if (width>-1) {
eImage.addContent(generateSimpleElement("width",String.valueOf(width)));
}
int height = image.getHeight();
if (height>-1) {
eImage.addContent(generateSimpleElement("height",String.valueOf(height)));
}
String description = image.getDescription();
if (description!=null) {
eImage.addContent(generateSimpleElement("description",description));
}
}
protected void populateItem(Item item, Element eItem, int index) {
super.populateItem(item,eItem, index);
Description description = item.getDescription();
if (description!=null) {
eItem.addContent(generateSimpleElement("description",description.getValue()));
}
if (item.getModule(getContentNamespace().getURI()) == null && item.getContent() != null) {
Element elem = new Element("encoded", getContentNamespace());
elem.addContent(item.getContent().getValue());
eItem.addContent(elem);
}
}
/**
* To be overriden by RSS 0.91 Netscape and RSS 0.94
*/
protected boolean isHourFormat24() {
return true;
}
protected void checkChannelConstraints(Element eChannel) throws FeedException {
checkNotNullAndLength(eChannel,"title", 1, 100);
checkNotNullAndLength(eChannel,"description", 1, 500);
checkNotNullAndLength(eChannel,"link", 1, 500);
checkNotNullAndLength(eChannel,"language", 2, 5);
checkLength(eChannel,"rating", 20, 500);
checkLength(eChannel,"copyright", 1, 100);
checkLength(eChannel,"pubDate", 1, 100);
checkLength(eChannel,"lastBuildDate", 1, 100);
checkLength(eChannel,"docs", 1, 500);
checkLength(eChannel,"managingEditor", 1, 100);
checkLength(eChannel,"webMaster", 1, 100);
Element skipHours = eChannel.getChild("skipHours");
if (skipHours!=null) {
List hours = skipHours.getChildren();
for (int i=0;i<hours.size();i++) {
Element hour = (Element) hours.get(i);
int value = Integer.parseInt(hour.getText().trim());
if (isHourFormat24()) {
if (value<1 || value>24) {
throw new FeedException("Invalid hour value "+value+", it must be between 1 and 24");
}
}
else {
if (value<0 || value>23) {
throw new FeedException("Invalid hour value "+value+", it must be between 0 and 23");
}
}
}
}
}
protected void checkImageConstraints(Element eImage) throws FeedException {
checkNotNullAndLength(eImage,"title", 1, 100);
checkNotNullAndLength(eImage,"url", 1, 500);
checkLength(eImage,"link", 1, 500);
checkLength(eImage,"width", 1, 3);
checkLength(eImage,"width", 1, 3);
checkLength(eImage,"description", 1, 100);
}
protected void checkTextInputConstraints(Element eTextInput) throws FeedException {
checkNotNullAndLength(eTextInput,"title", 1, 100);
checkNotNullAndLength(eTextInput,"description", 1, 500);
checkNotNullAndLength(eTextInput,"name", 1, 20);
checkNotNullAndLength(eTextInput,"link", 1, 500);
}
protected void checkItemConstraints(Element eItem) throws FeedException {
checkNotNullAndLength(eItem,"title", 1, 100);
checkNotNullAndLength(eItem,"link", 1, 500);
checkLength(eItem,"description", 1, 500);
}
}