140 lines
4.9 KiB
Java
140 lines
4.9 KiB
Java
/*
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* Created by Christian Schabesberger on 25.07.16.
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*
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* Copyright (C) Christian Schabesberger 2018 <chrźis.schabesberger@mailbox.org>
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* YoutubeChannelLinkHandlerFactory.java is part of NewPipe Extractor.
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*
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* NewPipe Extractor 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 Extractor 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 Extractor. If not, see <https://www.gnu.org/licenses/>.
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*/
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package org.schabi.newpipe.extractor.services.youtube.linkHandler;
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import org.schabi.newpipe.extractor.exceptions.ParsingException;
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import org.schabi.newpipe.extractor.linkhandler.ListLinkHandlerFactory;
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import org.schabi.newpipe.extractor.services.youtube.YoutubeParsingHelper;
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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.net.URL;
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import java.util.List;
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import java.util.regex.Pattern;
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import static org.schabi.newpipe.extractor.utils.Utils.isBlank;
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public final class YoutubeChannelLinkHandlerFactory extends ListLinkHandlerFactory {
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private static final YoutubeChannelLinkHandlerFactory INSTANCE
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= new YoutubeChannelLinkHandlerFactory();
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private static final Pattern EXCLUDED_SEGMENTS = Pattern.compile(
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// CHECKSTYLE:OFF
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"playlist|watch|attribution_link|watch_popup|embed|feed|select_site|account|reporthistory|redirect");
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// CHECKSTYLE:ON
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private YoutubeChannelLinkHandlerFactory() {
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}
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public static YoutubeChannelLinkHandlerFactory getInstance() {
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return INSTANCE;
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}
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/**
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* Returns the URL to a channel from an ID.
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*
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* @param id the channel ID including e.g. 'channel/'
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* @return the URL to the channel
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*/
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@Override
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public String getUrl(final String id,
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final List<String> contentFilters,
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final String searchFilter) {
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return "https://www.youtube.com/" + id;
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}
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/**
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* Checks whether the given path conforms to custom short channel URLs like
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* {@code youtube.com/yourcustomname}.
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*
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* @param splitPath the path segments array
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* @return whether the value conform to short channel URLs
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*/
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private boolean isCustomShortChannelUrl(@Nonnull final String[] splitPath) {
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return splitPath.length == 1 && !EXCLUDED_SEGMENTS.matcher(splitPath[0]).matches();
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}
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/**
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* Checks whether the given path conforms to handle URLs like {@code youtube.com/@yourhandle}.
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*
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* @param splitPath the path segments array
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* @return whether the value conform to handle URLs
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*/
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private boolean isHandle(@Nonnull final String[] splitPath) {
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return splitPath.length > 0 && splitPath[0].startsWith("@");
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}
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@Override
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public String getId(final String url) throws ParsingException {
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try {
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final URL urlObj = Utils.stringToURL(url);
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String path = urlObj.getPath();
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if (!Utils.isHTTP(urlObj) || !(YoutubeParsingHelper.isYoutubeURL(urlObj)
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|| YoutubeParsingHelper.isInvidiousURL(urlObj)
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|| YoutubeParsingHelper.isHooktubeURL(urlObj))) {
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throw new ParsingException("The URL given is not a YouTube URL");
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}
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// Remove leading "/"
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path = path.substring(1);
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String[] splitPath = path.split("/");
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if (isHandle(splitPath)) {
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// Handle YouTube handle URLs like youtube.com/@yourhandle
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return splitPath[0];
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} else if (isCustomShortChannelUrl(splitPath)) {
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// Handle custom short channel URLs like youtube.com/yourcustomname
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path = "c/" + path;
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splitPath = path.split("/");
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}
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if (!path.startsWith("user/") && !path.startsWith("channel/")
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&& !path.startsWith("c/")) {
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throw new ParsingException(
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"The given URL is not a channel, a user or a handle URL");
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}
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final String id = splitPath[1];
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if (isBlank(id)) {
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throw new ParsingException("The given ID is not a YouTube channel or user ID");
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}
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return splitPath[0] + "/" + id;
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} catch (final Exception e) {
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throw new ParsingException("Could not parse URL :" + e.getMessage(), e);
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}
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}
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@Override
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public boolean onAcceptUrl(final String url) {
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try {
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getId(url);
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} catch (final ParsingException e) {
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return false;
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}
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return true;
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}
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}
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