com.citypark.api.parser.XMLParser.java Source code

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Here is the source code for com.citypark.api.parser.XMLParser.java

Source

package com.citypark.api.parser;

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

import org.apache.http.Header;
import org.apache.http.HttpEntity;
import org.apache.http.HttpResponse;
import org.apache.http.StatusLine;
import org.apache.http.client.methods.HttpGet;
import org.apache.http.client.methods.HttpUriRequest;
import org.apache.http.impl.client.DefaultHttpClient;

import com.citypark.R;
import com.citypark.api.task.LoginTask;

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

/**
 * This file is part of BikeRoute.
 * 
 * Copyright (C) 2011  Jonathan Gray
 *
 * This program is free software; you can redistribute it and/or
 * modify it under the terms of the GNU General Public License
 * as published by the Free Software Foundation; either version 2
 * of the License, or (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program; if not, write to the Free Software
 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.
 * @author jono@nanosheep.net
 * @version Jan 21, 2011
 */

public class XMLParser {
    // names of the XML tags
    protected static final String MARKERS = "markers";
    protected static final String MARKER = "marker";

    protected URL feedUrl;

    protected XMLParser() {

    }

    protected XMLParser(final String feedUrl) {
        try {
            final String encodedUrl;
            if (feedUrl != null) {
                encodedUrl = feedUrl.replaceAll(" ", "+");
            } else {
                encodedUrl = feedUrl;
            }
            this.feedUrl = new URL(encodedUrl);
        } catch (MalformedURLException e) {
            Log.e(e.getMessage(), "XML parser - " + feedUrl);
        }
    }

    protected InputStream getInputStream() throws IOException {
        try {
            HttpUriRequest request = new HttpGet(feedUrl.toString());
            request.addHeader("Accept-Encoding", "gzip");
            //request.addHeader("encoding", "utf-8");
            final HttpResponse response = new DefaultHttpClient().execute(request);
            Header ce = response.getFirstHeader("Content-Encoding");
            String contentEncoding = null;

            StatusLine statusLine = response.getStatusLine();
            if (statusLine.getStatusCode() == 500) { //TODO currently return 500, after server fix replace with 401
                //re login
                LoginTask.login(null);
                return null;
            }

            HttpEntity entity = response.getEntity();
            InputStream instream = null;

            if (entity != null)
                instream = entity.getContent();

            if (ce != null) {
                contentEncoding = ce.getValue();
                if (contentEncoding != null && contentEncoding.equalsIgnoreCase("gzip")) {
                    instream = new GZIPInputStream(instream);
                }
            }

            return instream;
        } catch (IOException e) {
            Log.e(e.getMessage(), "XML parser - " + feedUrl);
            throw e;
        }
    }
}