NewPipeExtractor/services/youtube/YoutubeChannelExtractor.java

355 lines
14 KiB
Java

package org.schabi.newpipe.extractor.services.youtube;
import org.json.JSONException;
import org.json.JSONObject;
import org.jsoup.Jsoup;
import org.jsoup.nodes.Document;
import org.jsoup.nodes.Element;
import org.schabi.newpipe.extractor.Downloader;
import org.schabi.newpipe.extractor.NewPipe;
import org.schabi.newpipe.extractor.UrlIdHandler;
import org.schabi.newpipe.extractor.channel.ChannelExtractor;
import org.schabi.newpipe.extractor.exceptions.ExtractionException;
import org.schabi.newpipe.extractor.exceptions.ParsingException;
import org.schabi.newpipe.extractor.exceptions.ReCaptchaException;
import org.schabi.newpipe.extractor.stream.AbstractStreamInfo;
import org.schabi.newpipe.extractor.stream.StreamInfoItemCollector;
import org.schabi.newpipe.extractor.stream.StreamInfoItemExtractor;
import org.schabi.newpipe.extractor.utils.Parser;
import java.io.IOException;
/*
* Created by Christian Schabesberger on 25.07.16.
*
* Copyright (C) Christian Schabesberger 2016 <chris.schabesberger@mailbox.org>
* YoutubeChannelExtractor.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/>.
*/
@SuppressWarnings("WeakerAccess")
public class YoutubeChannelExtractor extends ChannelExtractor {
private static final String CHANNEL_FEED_BASE = "https://www.youtube.com/feeds/videos.xml?channel_id=";
private Document doc;
/**
* It's lazily initialized (when getNextStreams is called)
*/
private Document nextStreamsAjax;
/*//////////////////////////////////////////////////////////////////////////
// Variables for cache purposes (not "select" the current document all over again)
//////////////////////////////////////////////////////////////////////////*/
private String channelId;
private String channelName;
private String avatarUrl;
private String bannerUrl;
private String feedUrl;
private long subscriberCount = -1;
public YoutubeChannelExtractor(UrlIdHandler urlIdHandler, String url, int serviceId) throws ExtractionException, IOException {
super(urlIdHandler, urlIdHandler.cleanUrl(url), serviceId);
fetchDocument();
}
@Override
public String getChannelId() throws ParsingException {
try {
if (channelId == null) {
channelId = getUrlIdHandler().getId(getUrl());
}
return channelId;
} catch (Exception e) {
throw new ParsingException("Could not get channel id");
}
}
@Override
public String getChannelName() throws ParsingException {
try {
if (channelName == null) {
channelName = doc.select("span[class=\"qualified-channel-title-text\"]").first().select("a").first().text();
}
return channelName;
} catch (Exception e) {
throw new ParsingException("Could not get channel name");
}
}
@Override
public String getAvatarUrl() throws ParsingException {
try {
if (avatarUrl == null) {
avatarUrl = doc.select("img[class=\"channel-header-profile-image\"]").first().attr("abs:src");
}
return avatarUrl;
} catch (Exception e) {
throw new ParsingException("Could not get avatar", e);
}
}
@Override
public String getBannerUrl() throws ParsingException {
try {
if (bannerUrl == null) {
Element el = doc.select("div[id=\"gh-banner\"]").first().select("style").first();
String cssContent = el.html();
String url = "https:" + Parser.matchGroup1("url\\(([^)]+)\\)", cssContent);
bannerUrl = url.contains("s.ytimg.com") || url.contains("default_banner") ? null : url;
}
return bannerUrl;
} catch (Exception e) {
throw new ParsingException("Could not get Banner", e);
}
}
@Override
public StreamInfoItemCollector getStreams() throws ParsingException {
StreamInfoItemCollector collector = getStreamPreviewInfoCollector();
Element ul = doc.select("ul[id=\"browse-items-primary\"]").first();
collectStreamsFrom(collector, ul);
return collector;
}
@Override
public long getSubscriberCount() throws ParsingException {
if (subscriberCount == -1) {
Element el = doc.select("span[class*=\"yt-subscription-button-subscriber-count\"]").first();
if (el != null) {
subscriberCount = Long.parseLong(el.text().replaceAll("\\D+", ""));
} else {
throw new ParsingException("Could not get subscriber count");
}
}
return subscriberCount;
}
@Override
public String getFeedUrl() throws ParsingException {
try {
if (feedUrl == null) {
String channelId = doc.getElementsByClass("yt-uix-subscription-button").first().attr("data-channel-external-id");
feedUrl = channelId == null ? "" : CHANNEL_FEED_BASE + channelId;
}
return feedUrl;
} catch (Exception e) {
throw new ParsingException("Could not get feed url", e);
}
}
@Override
public StreamInfoItemCollector getNextStreams() throws ExtractionException, IOException {
if (!hasMoreStreams()) {
throw new ExtractionException("Channel doesn't have more streams");
}
StreamInfoItemCollector collector = new StreamInfoItemCollector(getUrlIdHandler(), getServiceId());
setupNextStreamsAjax(NewPipe.getDownloader());
collectStreamsFrom(collector, nextStreamsAjax.select("body").first());
return collector;
}
private void setupNextStreamsAjax(Downloader downloader) throws IOException, ReCaptchaException, ParsingException {
String ajaxDataRaw = downloader.download(nextStreamsUrl);
try {
JSONObject ajaxData = new JSONObject(ajaxDataRaw);
String htmlDataRaw = ajaxData.getString("content_html");
nextStreamsAjax = Jsoup.parse(htmlDataRaw, nextStreamsUrl);
String nextStreamsHtmlDataRaw = ajaxData.getString("load_more_widget_html");
if (!nextStreamsHtmlDataRaw.isEmpty()) {
Document nextStreamsData = Jsoup.parse(nextStreamsHtmlDataRaw, nextStreamsUrl);
nextStreamsUrl = getNextStreamsUrl(nextStreamsData);
} else {
nextStreamsUrl = "";
}
} catch (JSONException e) {
throw new ParsingException("Could not parse json data for next streams", e);
}
}
private String getNextStreamsUrl(Document d) throws ParsingException {
try {
Element button = d.select("button[class*=\"yt-uix-load-more\"]").first();
if (button != null) {
return button.attr("abs:data-uix-load-more-href");
} else {
// Sometimes channels are simply so small, they don't have a more streams/videos
return "";
}
} catch (Exception e) {
throw new ParsingException("could not get next streams' url", e);
}
}
private void fetchDocument() throws IOException, ReCaptchaException, ParsingException {
Downloader downloader = NewPipe.getDownloader();
String userUrl = getUrl() + "/videos?view=0&flow=list&sort=dd&live_view=10000";
String pageContent = downloader.download(userUrl);
doc = Jsoup.parse(pageContent, userUrl);
nextStreamsUrl = getNextStreamsUrl(doc);
nextStreamsAjax = null;
}
private void collectStreamsFrom(StreamInfoItemCollector collector, Element element) throws ParsingException {
collector.getItemList().clear();
for (final Element li : element.children()) {
if (li.select("div[class=\"feed-item-dismissable\"]").first() != null) {
collector.commit(new StreamInfoItemExtractor() {
@Override
public AbstractStreamInfo.StreamType getStreamType() throws ParsingException {
return AbstractStreamInfo.StreamType.VIDEO_STREAM;
}
@Override
public boolean isAd() throws ParsingException {
return !li.select("span[class*=\"icon-not-available\"]").isEmpty();
}
@Override
public String getWebPageUrl() throws ParsingException {
try {
Element el = li.select("div[class=\"feed-item-dismissable\"]").first();
Element dl = el.select("h3").first().select("a").first();
return dl.attr("abs:href");
} catch (Exception e) {
throw new ParsingException("Could not get web page url for the video", e);
}
}
@Override
public String getTitle() throws ParsingException {
try {
Element el = li.select("div[class=\"feed-item-dismissable\"]").first();
Element dl = el.select("h3").first().select("a").first();
return dl.text();
} catch (Exception e) {
throw new ParsingException("Could not get title", e);
}
}
@Override
public int getDuration() throws ParsingException {
try {
return YoutubeParsingHelper.parseDurationString(
li.select("span[class=\"video-time\"]").first().text());
} catch (Exception e) {
if (isLiveStream(li)) {
// -1 for no duration
return -1;
} else {
throw new ParsingException("Could not get Duration: " + getTitle(), e);
}
}
}
@Override
public String getUploader() throws ParsingException {
return getChannelName();
}
@Override
public String getUploadDate() throws ParsingException {
try {
Element meta = li.select("div[class=\"yt-lockup-meta\"]").first();
Element li = meta.select("li").first();
if (li == null) {
//this means we have a youtube red video
return "";
} else {
return li.text();
}
} catch (Exception e) {
throw new ParsingException("Could not get upload date", e);
}
}
@Override
public long getViewCount() throws ParsingException {
String output;
String input;
try {
input = li.select("div[class=\"yt-lockup-meta\"]").first()
.select("li").get(1)
.text();
} catch (IndexOutOfBoundsException e) {
return -1;
}
output = input.replaceAll("\\D+", "");
try {
return Long.parseLong(output);
} catch (NumberFormatException e) {
// if this happens the video probably has no views
if (!input.isEmpty()) {
return 0;
} else {
throw new ParsingException("Could not handle input: " + input, e);
}
}
}
@Override
public String getThumbnailUrl() throws ParsingException {
try {
String url;
Element te = li.select("span[class=\"yt-thumb-clip\"]").first()
.select("img").first();
url = te.attr("abs:src");
// Sometimes youtube sends links to gif files which somehow seem to not exist
// anymore. Items with such gif also offer a secondary image source. So we are going
// to use that if we've caught such an item.
if (url.contains(".gif")) {
url = te.attr("abs:data-thumb");
}
return url;
} catch (Exception e) {
throw new ParsingException("Could not get thumbnail url", e);
}
}
private boolean isLiveStream(Element item) {
Element bla = item.select("span[class*=\"yt-badge-live\"]").first();
if (bla == null) {
// sometimes livestreams dont have badges but sill are live streams
// if video time is not available we most likly have an offline livestream
if (item.select("span[class*=\"video-time\"]").first() == null) {
return true;
}
}
return bla != null;
}
});
}
}
}
}