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package de.danoeh.antennapod.syndication.namespace.atom;
import org.xml.sax.Attributes;
import de.danoeh.antennapod.feed.FeedImage;
import de.danoeh.antennapod.feed.FeedItem;
import de.danoeh.antennapod.feed.FeedMedia;
import de.danoeh.antennapod.syndication.handler.HandlerState;
import de.danoeh.antennapod.syndication.namespace.NSRSS20;
import de.danoeh.antennapod.syndication.namespace.Namespace;
import de.danoeh.antennapod.syndication.namespace.SyndElement;
import de.danoeh.antennapod.syndication.util.SyndDateUtils;
import de.danoeh.antennapod.syndication.util.SyndTypeUtils;
public class NSAtom extends Namespace {
private static final String TAG = "NSAtom";
public static final String NSTAG = "atom";
public static final String NSURI = "http://www.w3.org/2005/Atom";
private static final String FEED = "feed";
private static final String ID = "id";
private static final String TITLE = "title";
private static final String ENTRY = "entry";
private static final String LINK = "link";
private static final String UPDATED = "updated";
private static final String AUTHOR = "author";
private static final String CONTENT = "content";
private static final String IMAGE = "logo";
private static final String SUBTITLE = "subtitle";
private static final String PUBLISHED = "published";
private static final String TEXT_TYPE = "type";
// Link
private static final String LINK_HREF = "href";
private static final String LINK_REL = "rel";
private static final String LINK_TYPE = "type";
private static final String LINK_TITLE = "title";
private static final String LINK_LENGTH = "length";
// rel-values
private static final String LINK_REL_ALTERNATE = "alternate";
private static final String LINK_REL_ENCLOSURE = "enclosure";
private static final String LINK_REL_PAYMENT = "payment";
private static final String LINK_REL_RELATED = "related";
private static final String LINK_REL_SELF = "self";
// type-values
private static final String LINK_TYPE_ATOM = "application/atom+xml";
private static final String LINK_TYPE_HTML = "text/html";
private static final String LINK_TYPE_RSS = "application/rss+xml";
/** Regexp to test whether an Element is a Text Element. */
private static final String isText = TITLE + "|" + CONTENT + "|" + "|"
+ SUBTITLE;
public static final String isFeed = FEED + "|" + NSRSS20.CHANNEL;
public static final String isFeedItem = ENTRY + "|" + NSRSS20.ITEM;
@Override
public SyndElement handleElementStart(String localName, HandlerState state,
Attributes attributes) {
if (localName.equals(ENTRY)) {
state.setCurrentItem(new FeedItem());
state.getItems().add(state.getCurrentItem());
state.getCurrentItem().setFeed(state.getFeed());
} else if (localName.matches(isText)) {
String type = attributes.getValue(TEXT_TYPE);
return new AtomText(localName, this, type);
} else if (localName.equals(LINK)) {
String href = attributes.getValue(LINK_HREF);
String rel = attributes.getValue(LINK_REL);
SyndElement parent = state.getTagstack().peek();
if (parent.getName().matches(isFeedItem)) {
if (rel == null || rel.equals(LINK_REL_ALTERNATE)) {
state.getCurrentItem().setLink(href);
} else if (rel.equals(LINK_REL_ENCLOSURE)) {
String strSize = attributes.getValue(LINK_LENGTH);
long size = 0;
if (strSize != null)
size = Long.parseLong(strSize);
String type = attributes.getValue(LINK_TYPE);
if (SyndTypeUtils.enclosureTypeValid(type)
|| (type = SyndTypeUtils
.getValidMimeTypeFromUrl(href)) != null) {
state.getCurrentItem().setMedia(
new FeedMedia(state.getCurrentItem(), href,
size, type));
}
} else if (rel.equals(LINK_REL_PAYMENT)) {
state.getCurrentItem().setPaymentLink(href);
}
} else if (parent.getName().matches(isFeed)) {
if (rel == null || rel.equals(LINK_REL_ALTERNATE)) {
String type = attributes.getValue(LINK_TYPE);
if (type != null && type.equals(LINK_TYPE_HTML)) {
state.getFeed().setLink(href);
}
} else if (rel.equals(LINK_REL_PAYMENT)) {
state.getFeed().setPaymentLink(href);
}
}
}
return new SyndElement(localName, this);
}
@Override
public void handleElementEnd(String localName, HandlerState state) {
if (localName.equals(ENTRY)) {
state.setCurrentItem(null);
}
if (state.getTagstack().size() >= 2) {
AtomText textElement = null;
String content;
if (state.getContentBuf() != null) {
content = state.getContentBuf().toString();
} else {
content = new String();
}
SyndElement topElement = state.getTagstack().peek();
String top = topElement.getName();
SyndElement secondElement = state.getSecondTag();
String second = secondElement.getName();
if (top.matches(isText)) {
textElement = (AtomText) topElement;
textElement.setContent(content);
}
if (top.equals(ID)) {
if (second.equals(FEED)) {
state.getFeed().setFeedIdentifier(content);
} else if (second.equals(ENTRY)) {
state.getCurrentItem().setItemIdentifier(content);
}
} else if (top.equals(TITLE)) {
if (second.equals(FEED)) {
state.getFeed().setTitle(textElement.getProcessedContent());
} else if (second.equals(ENTRY)) {
state.getCurrentItem().setTitle(
textElement.getProcessedContent());
}
} else if (top.equals(SUBTITLE)) {
if (second.equals(FEED)) {
state.getFeed().setDescription(
textElement.getProcessedContent());
}
} else if (top.equals(CONTENT)) {
if (second.equals(ENTRY)) {
state.getCurrentItem().setDescription(
textElement.getProcessedContent());
}
} else if (top.equals(UPDATED)) {
if (second.equals(ENTRY)
&& state.getCurrentItem().getPubDate() == null) {
state.getCurrentItem().setPubDate(
SyndDateUtils.parseRFC3339Date(content));
}
} else if (top.equals(PUBLISHED)) {
if (second.equals(ENTRY)) {
state.getCurrentItem().setPubDate(
SyndDateUtils.parseRFC3339Date(content));
}
} else if (top.equals(IMAGE)) {
state.getFeed().setImage(new FeedImage(content, null));
}
}
}
}
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