Android Open Source - MusicPlayer-OLD Podcast Parser

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License

The source code is released under:

Apache License

Java Source Code

/*
 * Copyright 2013-2014 Andrea De Cesare//w  w  w .j a  va 2  s.c o m
 *
 * 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.andreadec.musicplayer;

import java.io.*;
import java.net.*;
import java.text.*;
import java.util.*;
import javax.xml.parsers.*;
import org.w3c.dom.*;
import android.graphics.*;

public class PodcastParser {
  private String title;
  private String link;
  private String imageUrl;
  private ArrayList<PodcastEpisode> episodes;
  
  public boolean parse(String podcastUrl) {
    episodes = new ArrayList<PodcastEpisode>();
    try {
      Document document = DocumentBuilderFactory.newInstance().newDocumentBuilder().parse(new URL(podcastUrl).openStream());
        Element root = document.getDocumentElement();
        
        NodeList channels = root.getChildNodes();
        for(int i=0; i<channels.getLength(); i++) {
          Node channelNode = channels.item(i);
          if(channelNode.getNodeType()==Node.ELEMENT_NODE) {
            NodeList items = channelNode.getChildNodes();
            for(int j=0; j<items.getLength(); j++) {
              Node itemNode = items.item(j);
              if(itemNode.getNodeType()==Node.ELEMENT_NODE) {
                Element item = (Element)itemNode;
                if(item.getTagName().equals("title")) {
                  title = item.getTextContent();
                } else if(item.getTagName().equals("link")) {
                  link = item.getTextContent();
                } else if(item.getTagName().equals("itunes:image")) {
                  imageUrl = item.getAttribute("href");
                } else if(item.getTagName().equals("item")) {
                  NodeList itemsValues = itemNode.getChildNodes();
                  String itemTitle=null, itemUrl=null, itemGuid=null, itemPubDate=null, duration=null, type=null;
                  for(int k=0; k<itemsValues.getLength(); k++) {
                    Node itemsValuesNode = itemsValues.item(k);
                    if(itemsValuesNode.getNodeType()==Node.ELEMENT_NODE) {
                      Element e = (Element)itemsValuesNode;
                      String tag = e.getTagName();
                      if(tag.equals("title")) itemTitle = e.getTextContent();
                      if(tag.equals("guid")) itemGuid = e.getTextContent();
                      if(tag.equals("pubDate")) itemPubDate = e.getTextContent();
                      if(tag.equals("itunes:duration")) duration = e.getTextContent();
                      if(tag.equals("enclosure")) {
                        itemUrl = e.getAttribute("url");
                        type = e.getAttribute("type");
                      }
                    }
                  }
                  
                  long dateLong = 0;
                  if(itemTitle==null || itemGuid==null || itemUrl==null || type==null) {
                    continue; // This is essential information! Can't be missing!
                  }
                  try {
                    DateFormat format = new SimpleDateFormat("EEE, dd MMM yyyy HH:mm:ss zzz", Locale.ENGLISH);
                    Date d = format.parse(itemPubDate);
                    dateLong = d.getTime();
                  } catch(Exception e) {}
                  
                  PodcastEpisode episode = new PodcastEpisode(itemUrl, null, itemTitle, itemGuid, null, PodcastEpisode.STATUS_NEW, dateLong, duration, type);
                  episodes.add(episode);
                }
              }
            }
          }
        }
      return true;
    } catch(Exception e) {
      e.printStackTrace();
      return false;
    }
  }
  
  public String getTitle() {
    return title;
  }
  
  public String getLink() {
    return link;
  }
  
  public String getImageUrl() {
    return imageUrl;
  }
  
  public ArrayList<PodcastEpisode> getEpisodes() {
    return episodes;
  }
  
  public byte[] downloadImage() {
    try {
      URLConnection connection = new URL(imageUrl).openConnection();
      ByteArrayOutputStream output = new ByteArrayOutputStream();
      InputStream input = connection.getInputStream();
      Bitmap bitmap = BitmapFactory.decodeStream(input);
      bitmap.compress(Bitmap.CompressFormat.PNG, 100, output);
      return output.toByteArray();
    } catch(Exception e) {
      e.printStackTrace();
      return null;
    }
  }
}

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