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package de.danoeh.antennapod.parser.feed.namespace;
import android.text.TextUtils;
import android.util.Log;
import de.danoeh.antennapod.model.feed.FeedFunding;
import de.danoeh.antennapod.parser.feed.HandlerState;
import de.danoeh.antennapod.parser.feed.element.AtomText;
import de.danoeh.antennapod.parser.feed.util.DateUtils;
import de.danoeh.antennapod.parser.feed.util.SyndStringUtils;
import org.xml.sax.Attributes;
import de.danoeh.antennapod.model.feed.FeedItem;
import de.danoeh.antennapod.model.feed.FeedMedia;
import de.danoeh.antennapod.parser.feed.element.SyndElement;
import de.danoeh.antennapod.parser.feed.util.SyndTypeUtils;
public class Atom 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 AUTHOR_NAME = "name";
private static final String CONTENT = "content";
private static final String SUMMARY = "summary";
private static final String IMAGE_LOGO = "logo";
private static final String IMAGE_ICON = "icon";
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_ARCHIVES = "archives";
private static final String LINK_REL_ENCLOSURE = "enclosure";
private static final String LINK_REL_PAYMENT = "payment";
private static final String LINK_REL_NEXT = "next";
// 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_XHTML = "application/xml+xhtml";
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 + "|" + SUMMARY;
private static final String isFeed = FEED + "|" + Rss20.CHANNEL;
private static final String isFeedItem = ENTRY + "|" + Rss20.ITEM;
@Override
public SyndElement handleElementStart(String localName, HandlerState state,
Attributes attributes) {
if (ENTRY.equals(localName)) {
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 (LINK.equals(localName)) {
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 || LINK_REL_ALTERNATE.equals(rel)) {
state.getCurrentItem().setLink(href);
} else if (LINK_REL_ENCLOSURE.equals(rel)) {
String strSize = attributes.getValue(LINK_LENGTH);
long size = 0;
try {
if (strSize != null) {
size = Long.parseLong(strSize);
}
} catch (NumberFormatException e) {
Log.d(TAG, "Length attribute could not be parsed.");
}
String type = attributes.getValue(LINK_TYPE);
String mimeType = SyndTypeUtils.getMimeType(type, href);
FeedItem currItem = state.getCurrentItem();
if (SyndTypeUtils.isMediaFile(mimeType) && currItem != null && !currItem.hasMedia()) {
currItem.setMedia(new FeedMedia(currItem, href, size, mimeType));
}
} else if (LINK_REL_PAYMENT.equals(rel)) {
state.getCurrentItem().setPaymentLink(href);
}
} else if (parent.getName().matches(isFeed)) {
if (rel == null || LINK_REL_ALTERNATE.equals(rel)) {
String type = attributes.getValue(LINK_TYPE);
/*
* Use as link if a) no type-attribute is given and
* feed-object has no link yet b) type of link is
* LINK_TYPE_HTML or LINK_TYPE_XHTML
*/
if (state.getFeed() != null &&
((type == null && state.getFeed().getLink() == null) ||
(LINK_TYPE_HTML.equals(type) || LINK_TYPE_XHTML.equals(type)))) {
state.getFeed().setLink(href);
} else if (LINK_TYPE_ATOM.equals(type) || LINK_TYPE_RSS.equals(type)) {
// treat as podlove alternate feed
String title = attributes.getValue(LINK_TITLE);
if (TextUtils.isEmpty(title)) {
title = href;
}
state.addAlternateFeedUrl(title, href);
}
} else if (LINK_REL_ARCHIVES.equals(rel) && state.getFeed() != null) {
String type = attributes.getValue(LINK_TYPE);
if (LINK_TYPE_ATOM.equals(type) || LINK_TYPE_RSS.equals(type)) {
String title = attributes.getValue(LINK_TITLE);
if (TextUtils.isEmpty(title)) {
title = href;
}
state.addAlternateFeedUrl(title, href);
} else if (LINK_TYPE_HTML.equals(type) || LINK_TYPE_XHTML.equals(type)) {
//A Link such as to a directory such as iTunes
}
} else if (LINK_REL_PAYMENT.equals(rel) && state.getFeed() != null) {
state.getFeed().addPayment(new FeedFunding(href, ""));
} else if (LINK_REL_NEXT.equals(rel) && state.getFeed() != null) {
state.getFeed().setPaged(true);
state.getFeed().setNextPageLink(href);
}
}
}
return new SyndElement(localName, this);
}
@Override
public void handleElementEnd(String localName, HandlerState state) {
if (ENTRY.equals(localName)) {
if (state.getCurrentItem() != null &&
state.getTempObjects().containsKey(Itunes.DURATION)) {
FeedItem currentItem = state.getCurrentItem();
if (currentItem.hasMedia()) {
Integer duration = (Integer) state.getTempObjects().get(Itunes.DURATION);
currentItem.getMedia().setDuration(duration);
}
state.getTempObjects().remove(Itunes.DURATION);
}
state.setCurrentItem(null);
}
if (state.getTagstack().size() >= 2) {
AtomText textElement = null;
String contentRaw;
if (state.getContentBuf() != null) {
contentRaw = state.getContentBuf().toString();
} else {
contentRaw = "";
}
String content = SyndStringUtils.trimAllWhitespace(contentRaw);
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 (ID.equals(top)) {
if (FEED.equals(second) && state.getFeed() != null) {
state.getFeed().setFeedIdentifier(contentRaw);
} else if (ENTRY.equals(second) && state.getCurrentItem() != null) {
state.getCurrentItem().setItemIdentifier(contentRaw);
}
} else if (TITLE.equals(top) && textElement != null) {
if (FEED.equals(second) && state.getFeed() != null) {
state.getFeed().setTitle(textElement.getProcessedContent());
} else if (ENTRY.equals(second) && state.getCurrentItem() != null) {
state.getCurrentItem().setTitle(textElement.getProcessedContent());
}
} else if (SUBTITLE.equals(top) && FEED.equals(second) && textElement != null &&
state.getFeed() != null) {
state.getFeed().setDescription(textElement.getProcessedContent());
} else if (CONTENT.equals(top) && ENTRY.equals(second) && textElement != null &&
state.getCurrentItem() != null) {
state.getCurrentItem().setDescriptionIfLonger(textElement.getProcessedContent());
} else if (SUMMARY.equals(top) && ENTRY.equals(second) && textElement != null
&& state.getCurrentItem() != null) {
state.getCurrentItem().setDescriptionIfLonger(textElement.getProcessedContent());
} else if (UPDATED.equals(top) && ENTRY.equals(second) && state.getCurrentItem() != null &&
state.getCurrentItem().getPubDate() == null) {
state.getCurrentItem().setPubDate(DateUtils.parseOrNullIfFuture(content));
} else if (PUBLISHED.equals(top) && ENTRY.equals(second) && state.getCurrentItem() != null) {
state.getCurrentItem().setPubDate(DateUtils.parseOrNullIfFuture(content));
} else if (IMAGE_LOGO.equals(top) && state.getFeed() != null && state.getFeed().getImageUrl() == null) {
state.getFeed().setImageUrl(content);
} else if (IMAGE_ICON.equals(top) && state.getFeed() != null) {
state.getFeed().setImageUrl(content);
} else if (AUTHOR_NAME.equals(top) && AUTHOR.equals(second) &&
state.getFeed() != null && state.getCurrentItem() == null) {
String currentName = state.getFeed().getAuthor();
if (currentName == null) {
state.getFeed().setAuthor(content);
} else {
state.getFeed().setAuthor(currentName + ", " + content);
}
}
}
}
}
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