NewPipeExtractor/services/youtube/YoutubeSuggestionExtractor....

100 lines
3.7 KiB
Java

package org.schabi.newpipe.extractor.services.youtube;
import org.schabi.newpipe.extractor.Downloader;
import org.schabi.newpipe.extractor.NewPipe;
import org.schabi.newpipe.extractor.exceptions.ExtractionException;
import org.schabi.newpipe.extractor.exceptions.ParsingException;
import org.schabi.newpipe.extractor.SuggestionExtractor;
import org.w3c.dom.Node;
import org.w3c.dom.NodeList;
import org.xml.sax.InputSource;
import org.xml.sax.SAXException;
import java.io.ByteArrayInputStream;
import java.io.IOException;
import java.net.URLEncoder;
import java.util.ArrayList;
import java.util.List;
import javax.xml.parsers.DocumentBuilder;
import javax.xml.parsers.DocumentBuilderFactory;
import javax.xml.parsers.ParserConfigurationException;
/**
* Created by Christian Schabesberger on 28.09.16.
*
* Copyright (C) Christian Schabesberger 2015 <chris.schabesberger@mailbox.org>
* YoutubeSuggestionExtractor.java is part of NewPipe.
*
* NewPipe 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 3 of the License, or
* (at your option) any later version.
*
* NewPipe 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 NewPipe. If not, see <http://www.gnu.org/licenses/>.
*/
public class YoutubeSuggestionExtractor extends SuggestionExtractor {
public static final String CHARSET_UTF_8 = "UTF-8";
public YoutubeSuggestionExtractor(int serviceId) {
super(serviceId);
}
@Override
public List<String> suggestionList(
String query, String contentCountry)
throws ExtractionException, IOException {
List<String> suggestions = new ArrayList<>();
Downloader dl = NewPipe.getDownloader();
String url = "https://suggestqueries.google.com/complete/search"
+ "?client=" + ""
+ "&output=" + "toolbar"
+ "&ds=" + "yt"
+ "&hl=" + URLEncoder.encode(contentCountry, CHARSET_UTF_8)
+ "&q=" + URLEncoder.encode(query, CHARSET_UTF_8);
String response = dl.download(url);
//TODO: Parse xml data using Jsoup not done
DocumentBuilderFactory dbFactory = DocumentBuilderFactory.newInstance();
DocumentBuilder dBuilder;
org.w3c.dom.Document doc = null;
try {
dBuilder = dbFactory.newDocumentBuilder();
doc = dBuilder.parse(new InputSource(
new ByteArrayInputStream(response.getBytes(CHARSET_UTF_8))));
doc.getDocumentElement().normalize();
} catch (ParserConfigurationException | SAXException | IOException e) {
throw new ParsingException("Could not parse document.");
}
try {
NodeList nList = doc.getElementsByTagName("CompleteSuggestion");
for (int temp = 0; temp < nList.getLength(); temp++) {
NodeList nList1 = doc.getElementsByTagName("suggestion");
Node nNode1 = nList1.item(temp);
if (nNode1.getNodeType() == Node.ELEMENT_NODE) {
org.w3c.dom.Element eElement = (org.w3c.dom.Element) nNode1;
suggestions.add(eElement.getAttribute("data"));
}
}
return suggestions;
} catch(Exception e) {
throw new ParsingException("Could not get suggestions form document.", e);
}
}
}