271 lines
11 KiB
Java
271 lines
11 KiB
Java
package org.schabi.newpipe.extractor.services.youtube;
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import com.grack.nanojson.JsonObject;
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import com.grack.nanojson.JsonParser;
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import com.grack.nanojson.JsonParserException;
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import org.jsoup.Jsoup;
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import org.jsoup.nodes.Document;
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import org.jsoup.nodes.Element;
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import org.schabi.newpipe.extractor.Downloader;
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import org.schabi.newpipe.extractor.NewPipe;
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import org.schabi.newpipe.extractor.StreamingService;
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import org.schabi.newpipe.extractor.channel.ChannelExtractor;
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import org.schabi.newpipe.extractor.exceptions.ExtractionException;
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import org.schabi.newpipe.extractor.exceptions.ParsingException;
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import org.schabi.newpipe.extractor.stream.StreamInfoItem;
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import org.schabi.newpipe.extractor.stream.StreamInfoItemsCollector;
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import org.schabi.newpipe.extractor.utils.Parser;
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import org.schabi.newpipe.extractor.utils.Utils;
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import javax.annotation.Nonnull;
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import java.io.IOException;
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/*
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* Created by Christian Schabesberger on 25.07.16.
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*
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* Copyright (C) Christian Schabesberger 2016 <chris.schabesberger@mailbox.org>
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* YoutubeChannelExtractor.java is part of NewPipe.
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*
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* NewPipe is free software: you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation, either version 3 of the License, or
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* (at your option) any later version.
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*
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* NewPipe is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with NewPipe. If not, see <http://www.gnu.org/licenses/>.
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*/
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@SuppressWarnings("WeakerAccess")
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public class YoutubeChannelExtractor extends ChannelExtractor {
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private static final String CHANNEL_FEED_BASE = "https://www.youtube.com/feeds/videos.xml?channel_id=";
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private static final String CHANNEL_URL_PARAMETERS = "/videos?view=0&flow=list&sort=dd&live_view=10000";
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private Document doc;
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public YoutubeChannelExtractor(StreamingService service, String url) {
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super(service, url);
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}
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@Override
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public void onFetchPage(@Nonnull Downloader downloader) throws IOException, ExtractionException {
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String channelUrl = super.getCleanUrl() + CHANNEL_URL_PARAMETERS;
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String pageContent = downloader.download(channelUrl);
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doc = Jsoup.parse(pageContent, channelUrl);
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}
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@Override
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public String getNextPageUrl() throws ExtractionException {
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return getNextPageUrlFrom(doc);
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}
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@Nonnull
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@Override
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public String getCleanUrl() {
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try {
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return "https://www.youtube.com/channel/" + getId();
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} catch (ParsingException e) {
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return super.getCleanUrl();
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}
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}
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@Nonnull
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@Override
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public String getId() throws ParsingException {
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try {
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Element element = doc.getElementsByClass("yt-uix-subscription-button").first();
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if (element == null) element = doc.getElementsByClass("yt-uix-subscription-preferences-button").first();
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return element.attr("data-channel-external-id");
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} catch (Exception e) {
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throw new ParsingException("Could not get channel id", e);
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}
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}
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@Nonnull
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@Override
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public String getName() throws ParsingException {
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try {
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return doc.select("meta[property=\"og:title\"]").first().attr("content");
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} catch (Exception e) {
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throw new ParsingException("Could not get channel name", e);
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}
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}
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@Override
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public String getAvatarUrl() throws ParsingException {
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try {
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return doc.select("img[class=\"channel-header-profile-image\"]").first().attr("abs:src");
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} catch (Exception e) {
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throw new ParsingException("Could not get avatar", e);
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}
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}
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@Override
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public String getBannerUrl() throws ParsingException {
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try {
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Element el = doc.select("div[id=\"gh-banner\"]").first().select("style").first();
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String cssContent = el.html();
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String url = "https:" + Parser.matchGroup1("url\\(([^)]+)\\)", cssContent);
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return url.contains("s.ytimg.com") || url.contains("default_banner") ? null : url;
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} catch (Exception e) {
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throw new ParsingException("Could not get Banner", e);
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}
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}
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@Override
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public String getFeedUrl() throws ParsingException {
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try {
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return CHANNEL_FEED_BASE + getId();
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} catch (Exception e) {
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throw new ParsingException("Could not get feed url", e);
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}
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}
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@Override
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public long getSubscriberCount() throws ParsingException {
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Element el = doc.select("span[class*=\"yt-subscription-button-subscriber-count\"]").first();
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if (el != null) {
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return Long.parseLong(Utils.removeNonDigitCharacters(el.text()));
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} else {
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throw new ParsingException("Could not get subscriber count");
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}
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}
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@Override
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public String getDescription() throws ParsingException {
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try {
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return doc.select("meta[name=\"description\"]").first().attr("content");
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} catch (Exception e) {
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throw new ParsingException("Could not get channel description", e);
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}
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}
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@Nonnull
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@Override
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public InfoItemsPage<StreamInfoItem> getInitialPage() throws ExtractionException {
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StreamInfoItemsCollector collector = new StreamInfoItemsCollector(getServiceId());
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Element ul = doc.select("ul[id=\"browse-items-primary\"]").first();
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collectStreamsFrom(collector, ul);
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return new InfoItemsPage<>(collector, getNextPageUrl());
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}
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@Override
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public InfoItemsPage<StreamInfoItem> getPage(String pageUrl) throws IOException, ExtractionException {
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if (pageUrl == null || pageUrl.isEmpty()) {
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throw new ExtractionException(new IllegalArgumentException("Page url is empty or null"));
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}
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// Unfortunately, we have to fetch the page even if we are only getting next streams,
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// as they don't deliver enough information on their own (the channel name, for example).
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fetchPage();
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StreamInfoItemsCollector collector = new StreamInfoItemsCollector(getServiceId());
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JsonObject ajaxJson;
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try {
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ajaxJson = JsonParser.object().from(NewPipe.getDownloader().download(pageUrl));
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} catch (JsonParserException pe) {
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throw new ParsingException("Could not parse json data for next streams", pe);
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}
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final Document ajaxHtml = Jsoup.parse(ajaxJson.getString("content_html"), pageUrl);
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collectStreamsFrom(collector, ajaxHtml.select("body").first());
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return new InfoItemsPage<>(collector, getNextPageUrlFromAjaxPage(ajaxJson, pageUrl));
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}
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private String getNextPageUrlFromAjaxPage(final JsonObject ajaxJson, final String pageUrl)
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throws ParsingException {
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String loadMoreHtmlDataRaw = ajaxJson.getString("load_more_widget_html");
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if (!loadMoreHtmlDataRaw.isEmpty()) {
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return getNextPageUrlFrom(Jsoup.parse(loadMoreHtmlDataRaw, pageUrl));
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} else {
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return "";
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}
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}
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private String getNextPageUrlFrom(Document d) throws ParsingException {
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try {
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Element button = d.select("button[class*=\"yt-uix-load-more\"]").first();
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if (button != null) {
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return button.attr("abs:data-uix-load-more-href");
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} else {
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// Sometimes channels are simply so small, they don't have a more streams/videos
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return "";
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}
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} catch (Exception e) {
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throw new ParsingException("Could not get next page url", e);
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}
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}
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private void collectStreamsFrom(StreamInfoItemsCollector collector, Element element) throws ParsingException {
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collector.reset();
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final String uploaderName = getName();
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final String uploaderUrl = getCleanUrl();
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for (final Element li : element.children()) {
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if (li.select("div[class=\"feed-item-dismissable\"]").first() != null) {
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collector.commit(new YoutubeStreamInfoItemExtractor(li) {
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@Override
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public String getUrl() throws ParsingException {
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try {
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Element el = li.select("div[class=\"feed-item-dismissable\"]").first();
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Element dl = el.select("h3").first().select("a").first();
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return dl.attr("abs:href");
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} catch (Exception e) {
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throw new ParsingException("Could not get web page url for the video", e);
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}
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}
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@Override
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public String getName() throws ParsingException {
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try {
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Element el = li.select("div[class=\"feed-item-dismissable\"]").first();
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Element dl = el.select("h3").first().select("a").first();
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return dl.text();
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} catch (Exception e) {
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throw new ParsingException("Could not get title", e);
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}
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}
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@Override
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public String getUploaderName() throws ParsingException {
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return uploaderName;
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}
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@Override
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public String getUploaderUrl() throws ParsingException {
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return uploaderUrl;
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}
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@Override
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public String getThumbnailUrl() throws ParsingException {
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try {
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String url;
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Element te = li.select("span[class=\"yt-thumb-clip\"]").first()
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.select("img").first();
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url = te.attr("abs:src");
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// Sometimes youtube sends links to gif files which somehow seem to not exist
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// anymore. Items with such gif also offer a secondary image source. So we are going
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// to use that if we've caught such an item.
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if (url.contains(".gif")) {
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url = te.attr("abs:data-thumb");
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}
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return url;
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} catch (Exception e) {
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throw new ParsingException("Could not get thumbnail url", e);
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}
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}
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});
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}
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}
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}
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}
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