com.quackware.handsfreemusic.Utility.java Source code

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Here is the source code for com.quackware.handsfreemusic.Utility.java

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/*******************************************************************************
 * Copyright (c) 2012 Curtis Larson (QuackWare).
 * All rights reserved. This program and the accompanying materials
 * are made available under the terms of the GNU Public License v3.0
 * which accompanies this distribution, and is available at
 * http://www.gnu.org/licenses/gpl.html
 ******************************************************************************/
package com.quackware.handsfreemusic;

import java.io.BufferedInputStream;
import java.io.DataInputStream;
import java.io.IOException;
import java.io.InputStream;
import java.io.InputStreamReader;
import java.io.Reader;
import java.io.UnsupportedEncodingException;
import java.net.HttpURLConnection;
import java.net.MalformedURLException;
import java.net.URL;
import java.util.ArrayList;
import java.util.regex.Matcher;
import java.util.regex.Pattern;

import org.apache.http.client.ClientProtocolException;

public class Utility {

    //   public static String getSourceCode(URL u)
    //   {
    //      StringBuilder sb = new StringBuilder();
    //       try{
    //         HttpURLConnection uc = (HttpURLConnection) u.openConnection();
    //         int code = uc.getResponseCode();
    //         String response = uc.getResponseMessage();
    //         System.out.println("HTTP/1.x " + code + " " + response);
    //         for(int j = 1; ; j++){
    //           String header = uc.getHeaderField(j);
    //           String key = uc.getHeaderFieldKey(j);
    //           if(header == null || key == null)
    //             break;
    //           System.out.println(uc.getHeaderFieldKey(j) + ": " + header);
    //         }
    //         InputStream in = new BufferedInputStream(uc.getInputStream());
    //         Reader r = new InputStreamReader(in);
    //         int c;
    //         while((c = r.read()) != -1){
    //           sb.append((char)c);
    //         }
    //         return sb.toString();
    //       }
    //       catch(Exception ex)
    //       {
    //          return null;
    //       }
    //   }
    public static String getSourceCode(URL url) {
        Object content = null;
        try {

            HttpURLConnection uc = (HttpURLConnection) url.openConnection();
            uc.setRequestProperty("User-Agent",
                    "Mozilla/5.0 (Windows; U; Windows NT 6.1; ru; rv:1.9.2.4) Gecko/20100513 Firefox/3.6.4");
            uc.connect();
            InputStream stream = uc.getInputStream();
            if (stream != null) {
                content = readStream(uc.getContentLength(), stream);
            } else if ((content = uc.getContent()) != null && content instanceof java.io.InputStream)
                content = readStream(uc.getContentLength(), (java.io.InputStream) content);
            uc.disconnect();

        } catch (Exception ex) {
            return null;
        }
        if (content != null && content instanceof String) {
            String html = (String) content;
            return html;
        } else {
            return null;
        }
    }

    private static Object readStream(int length, java.io.InputStream stream) throws java.io.IOException {
        String charset = null;
        final int buflen = Math.max(1024, Math.max(length, stream.available()));
        byte[] buf = new byte[buflen];
        ;
        byte[] bytes = null;

        for (int nRead = stream.read(buf); nRead != -1; nRead = stream.read(buf)) {
            if (bytes == null) {
                bytes = buf;
                buf = new byte[buflen];
                continue;
            }
            final byte[] newBytes = new byte[bytes.length + nRead];
            System.arraycopy(bytes, 0, newBytes, 0, bytes.length);
            System.arraycopy(buf, 0, newBytes, bytes.length, nRead);
            bytes = newBytes;
        }

        return new String(bytes);
    }

    public static CharSequence[][] retrieveYouTubeTitleAndUrl(String html) {
        ArrayList<String> links = new ArrayList<String>();
        ArrayList<String> titles = new ArrayList<String>();

        Pattern myPattern1 = Pattern.compile("<a href=\"rtsp.*?\\.3gp.*?\">");
        Pattern myPattern2 = Pattern.compile("<a accesskey=.*?</a>");
        Pattern myPattern3 = Pattern.compile(">.*?</a>");

        Matcher myMatcher = myPattern1.matcher(html);
        while (myMatcher.find() && links.size() < 5) {
            links.add(myMatcher.group().replace("<a href=\"", "").replace("\">", ""));
        }
        myMatcher = myPattern2.matcher(html);
        while (myMatcher.find() && titles.size() < 5) {
            Matcher myMatcher2 = myPattern3.matcher(myMatcher.group());
            myMatcher2.find();
            titles.add(myMatcher2.group().replace(">", "").replace("</a", ""));
        }

        CharSequence[][] searchResults = new CharSequence[2][links.size()];
        for (int i = 0; i < links.size(); i++) {
            searchResults[0][i] = links.get(i);
            searchResults[1][i] = titles.get(i);
        }
        return searchResults;
    }
}