com.florianmski.tracktoid.image.Fanart.java Source code

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Here is the source code for com.florianmski.tracktoid.image.Fanart.java

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/*
 * Copyright 2011 Florian Mierzejewski
 *
 * 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.florianmski.tracktoid.image;

import java.io.IOException;
import java.io.InputStream;
import java.net.MalformedURLException;
import java.net.URL;
import java.util.ArrayList;
import java.util.zip.GZIPInputStream;

import javax.xml.parsers.SAXParser;
import javax.xml.parsers.SAXParserFactory;

import org.apache.http.Header;
import org.apache.http.HttpResponse;
import org.apache.http.client.methods.HttpGet;
import org.apache.http.client.methods.HttpUriRequest;
import org.apache.http.impl.client.DefaultHttpClient;
import org.xml.sax.Attributes;
import org.xml.sax.InputSource;
import org.xml.sax.SAXException;
import org.xml.sax.XMLReader;
import org.xml.sax.helpers.DefaultHandler;

import android.content.Context;
import android.util.Log;

public class Fanart extends DefaultHandler {
    public final static int CLEARLOGO = 0, CLEARART = 1, TVTHUMB = 2, SEASONTHUMB = 3;

    private static Fanart fanart;

    private HttpResponse res;
    private DefaultHttpClient http;
    private SAXParserFactory spf;
    private SAXParser sp;
    private XMLReader xr;

    private ArrayList<String> urls;
    private String type;

    public static synchronized Fanart getFanartParser() {
        if (fanart == null)
            fanart = new Fanart();
        return fanart;
    }

    //initialize each parameter once
    private Fanart() {
        http = new DefaultHttpClient();

        spf = SAXParserFactory.newInstance();
        try {
            sp = spf.newSAXParser();
            xr = sp.getXMLReader();
        } catch (Exception e) {
            e.printStackTrace();
        }
        xr.setContentHandler(this);
    }

    public String getFanart(String tvdb_id, int type, Context c) {
        switch (type) {
        case CLEARLOGO:
            this.type = "clearlogo";
            break;
        case CLEARART:
            this.type = "clearart";
            break;
        case TVTHUMB:
            this.type = "tvthumb";
            break;
        case SEASONTHUMB:
            this.type = "seasonthumb";
            break;
        }
        URL url = null;
        try {
            url = new URL("http://fanart.tv/api/fanart.php?id=" + tvdb_id + "&type=" + this.type + "&sort=favdesc");
        } catch (MalformedURLException e) {
        }
        loadData(url, c);
        return getUrl();

    }

    private String getUrl() {
        if (urls == null || urls.size() == 0)
            return null;
        return urls.get(0);
    }

    //get xml and parse it
    private synchronized void loadData(URL url, Context c) {
        try {
            HttpUriRequest request = new HttpGet(url.toString());
            request.addHeader("Accept-Encoding", "gzip");
            res = http.execute(request);
        } catch (IOException e) {
            Log.e("FanartParser", "Error loading data", e);
        }
        try {
            //using special encoding to reduce download time
            InputStream instream = res.getEntity().getContent();
            Header contentEncoding = res.getFirstHeader("Content-Encoding");
            if (contentEncoding != null && contentEncoding.getValue().equalsIgnoreCase("gzip"))
                instream = new GZIPInputStream(instream);

            xr.parse(new InputSource(instream));
        } catch (Exception e) {
            Log.e("FanartParser", "Error parsing data", e);
        }
    }

    @Override
    public void startElement(String uri, String localName, String qName, Attributes attributes)
            throws SAXException {
        if (localName.equals("fanart")) {
            urls = new ArrayList<String>();
        } else if (localName.equals(this.type)) {
            urls.add(attributes.getValue("url"));
        }
    }

    @Override
    public void endElement(String namespaceURI, String localName, String qName) throws SAXException {
    }

    @Override
    public void characters(char ch[], int start, int length) {
    }
}