/*
* This method is used to parse the xml file containing
* the articles.
*
* @param InputStream input stream of the download.
*
* @return ArrayList<Article> list of articles parsed from file
*/
public ArrayList<Article> parseXml(InputStream inputStream) {
XmlPullParserFactory pullParserFactory;
ArrayList<Article> articles = null;
String defaultImage = null;
try {
// Create the XmlPullParser factory and parser
pullParserFactory = XmlPullParserFactory.newInstance();
XmlPullParser parser = pullParserFactory.newPullParser();
// Get the xml file and set into the parser.
parser.setFeature(XmlPullParser.FEATURE_PROCESS_NAMESPACES, false);
parser.setInput(inputStream, null);
int eventType = parser.getEventType();
Article currentItem = null;
// kluge to take care of html to string issue.
int decimal = Integer.parseInt("fffc", 16);
// convert the decimal to character
char tempChar = (char) decimal;
// While not at the end of the document continue checking for required
// items.
while (eventType != XmlPullParser.END_DOCUMENT) {
String name = null;
switch (eventType) {
case XmlPullParser.START_DOCUMENT:
articles = new ArrayList<Article>();
break;
case XmlPullParser.START_TAG:
// Found a start tag. Check if one looking for. It item
// then have a new article. If a title or content then
// save the data.
name = parser.getName();
if (name.equals("item")) {
currentItem = new Article();
} else if (name.equals("title") && currentItem == null) {
// check which feed so can set default image if one
// isn't found.
String temp = parser.nextText();
// Hmmm, intended to access the default image. However,
// this would probably mean having to do differently.
// Should probably save images to internal storage so
// they can be accessed the same as cached images.
if (temp.toLowerCase().contains("google")) {
defaultImage = new String("google");
} else if (temp.toLowerCase().contains("yahoo")) {
defaultImage = new String("yahoo");
}
} else if (currentItem != null) {
if (name.equals("title")) {
currentItem.title = parser.nextText();
} else if (name.equals("description")) {
// TODO: This should be where we pull the image from the description
// and put that into the content image. Since we are already in
// an async task we can do here. If trying to make reusable would
// need to put into another async task.
Spanned result = Html.fromHtml(parser.nextText(), null, null);
currentItem.content = result.toString();
// Major hack to get rid of "obj" chars. Need to do different
// if have time.
currentItem.content = currentItem.content.replace(tempChar, '\0');
} else if (name.equals("pubDate")) {
currentItem.date = parser.nextText();
} else if (name.equals("media:content")) {
// Comment out for now since haven't downloaded images.
// currentItem.imageUri = parser.getAttributeValue(null, "url");
// currentItem.imageUri = parser.nextText();
}
}
break;
case XmlPullParser.END_TAG:
// If this is an end tag check if this means end of item.
// If so then save the article.
name = parser.getName();
if (name.equalsIgnoreCase("item") && currentItem != null) {
// If didn't find an image than use the default
if (currentItem.imageUri == null) {
currentItem.imageUri = defaultImage;
}
articles.add(currentItem);
}
break;
case XmlPullParser.TEXT:
// This is only used for checking how working.
System.out.println("getting text");
}
eventType = parser.next();
}
System.out.println("finally done");
} catch (XmlPullParserException e) {
e.printStackTrace();
} catch (IOException e) {
e.printStackTrace();
}
return articles;
}
