mirror of https://github.com/TeamNewPipe/NewPipe
271 lines
11 KiB
Java
271 lines
11 KiB
Java
/*
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* Copyright 2017 Mauricio Colli <mauriciocolli@outlook.com>
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* Extractors.java is part of NewPipe
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*
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* License: GPL-3.0+
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* This program 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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* This program 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 this program. If not, see <http://www.gnu.org/licenses/>.
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*/
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package org.schabi.newpipe.util;
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import android.util.Log;
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import org.schabi.newpipe.MainActivity;
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import org.schabi.newpipe.extractor.Info;
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import org.schabi.newpipe.extractor.ListExtractor.NextItemsResult;
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import org.schabi.newpipe.extractor.NewPipe;
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import org.schabi.newpipe.extractor.channel.ChannelInfo;
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import org.schabi.newpipe.extractor.kiosk.KioskInfo;
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import org.schabi.newpipe.extractor.playlist.PlaylistInfo;
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import org.schabi.newpipe.extractor.search.SearchEngine;
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import org.schabi.newpipe.extractor.search.SearchResult;
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import org.schabi.newpipe.extractor.stream.StreamInfo;
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import java.io.InterruptedIOException;
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import java.util.List;
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import java.util.concurrent.Callable;
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import io.reactivex.Maybe;
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import io.reactivex.MaybeSource;
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import io.reactivex.Single;
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import io.reactivex.annotations.NonNull;
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import io.reactivex.functions.Consumer;
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import io.reactivex.functions.Function;
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public final class ExtractorHelper {
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private static final String TAG = ExtractorHelper.class.getSimpleName();
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private static final InfoCache cache = InfoCache.getInstance();
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private ExtractorHelper() {
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//no instance
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}
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private static void checkServiceId(int serviceId) {
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if(serviceId == Constants.NO_SERVICE_ID) {
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throw new IllegalArgumentException("serviceId is NO_SERVICE_ID");
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}
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}
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public static Single<SearchResult> searchFor(final int serviceId, final String query, final int pageNumber, final String searchLanguage, final SearchEngine.Filter filter) {
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checkServiceId(serviceId);
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return Single.fromCallable(new Callable<SearchResult>() {
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@Override
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public SearchResult call() throws Exception {
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return SearchResult.getSearchResult(NewPipe.getService(serviceId).getSearchEngine(),
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query, pageNumber, searchLanguage, filter);
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}
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});
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}
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public static Single<NextItemsResult> getMoreSearchItems(final int serviceId, final String query, final int nextPageNumber, final String searchLanguage, final SearchEngine.Filter filter) {
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checkServiceId(serviceId);
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return searchFor(serviceId, query, nextPageNumber, searchLanguage, filter)
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.map(new Function<SearchResult, NextItemsResult>() {
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@Override
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public NextItemsResult apply(@NonNull SearchResult searchResult) throws Exception {
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return new NextItemsResult(searchResult.resultList, nextPageNumber + "", searchResult.errors);
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}
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});
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}
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public static Single<List<String>> suggestionsFor(final int serviceId, final String query, final String searchLanguage) {
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checkServiceId(serviceId);
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return Single.fromCallable(new Callable<List<String>>() {
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@Override
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public List<String> call() throws Exception {
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return NewPipe.getService(serviceId).getSuggestionExtractor().suggestionList(query, searchLanguage);
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}
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});
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}
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public static Single<StreamInfo> getStreamInfo(final int serviceId, final String url, boolean forceLoad) {
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checkServiceId(serviceId);
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return checkCache(forceLoad, serviceId, url, Single.fromCallable(new Callable<StreamInfo>() {
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@Override
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public StreamInfo call() throws Exception {
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return StreamInfo.getInfo(NewPipe.getService(serviceId), url);
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}
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}));
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}
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public static Single<ChannelInfo> getChannelInfo(final int serviceId, final String url, boolean forceLoad) {
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checkServiceId(serviceId);
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return checkCache(forceLoad, serviceId, url, Single.fromCallable(new Callable<ChannelInfo>() {
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@Override
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public ChannelInfo call() throws Exception {
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return ChannelInfo.getInfo(NewPipe.getService(serviceId), url);
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}
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}));
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}
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public static Single<NextItemsResult> getMoreChannelItems(final int serviceId, final String url, final String nextStreamsUrl) {
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checkServiceId(serviceId);
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return Single.fromCallable(new Callable<NextItemsResult>() {
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@Override
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public NextItemsResult call() throws Exception {
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return ChannelInfo.getMoreItems(NewPipe.getService(serviceId), url, nextStreamsUrl);
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}
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});
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}
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public static Single<PlaylistInfo> getPlaylistInfo(final int serviceId, final String url, boolean forceLoad) {
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checkServiceId(serviceId);
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return checkCache(forceLoad, serviceId, url, Single.fromCallable(new Callable<PlaylistInfo>() {
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@Override
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public PlaylistInfo call() throws Exception {
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return PlaylistInfo.getInfo(NewPipe.getService(serviceId), url);
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}
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}));
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}
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public static Single<NextItemsResult> getMorePlaylistItems(final int serviceId, final String url, final String nextStreamsUrl) {
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checkServiceId(serviceId);
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return Single.fromCallable(new Callable<NextItemsResult>() {
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@Override
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public NextItemsResult call() throws Exception {
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return PlaylistInfo.getMoreItems(NewPipe.getService(serviceId), url, nextStreamsUrl);
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}
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});
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}
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public static Single<KioskInfo> getKioskInfo(final int serviceId, final String url, final String contentCountry, boolean forceLoad) {
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return checkCache(forceLoad, serviceId, url, Single.fromCallable(new Callable<KioskInfo>() {
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@Override
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public KioskInfo call() throws Exception {
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return KioskInfo.getInfo(NewPipe.getService(serviceId), url, contentCountry);
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}
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}));
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}
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public static Single<NextItemsResult> getMoreKioskItems(final int serviceId, final String url, final String nextStreamsUrl) {
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return Single.fromCallable(new Callable<NextItemsResult>() {
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@Override
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public NextItemsResult call() throws Exception {
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return KioskInfo.getMoreItems(NewPipe.getService(serviceId), url, nextStreamsUrl);
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}
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});
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}
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/*//////////////////////////////////////////////////////////////////////////
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// Utils
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//////////////////////////////////////////////////////////////////////////*/
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/**
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* Check if we can load it from the cache (forceLoad parameter), if we can't, load from the network (Single loadFromNetwork)
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* and put the results in the cache.
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*/
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private static <I extends Info> Single<I> checkCache(boolean forceLoad, int serviceId, String url, Single<I> loadFromNetwork) {
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checkServiceId(serviceId);
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loadFromNetwork = loadFromNetwork.doOnSuccess(new Consumer<I>() {
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@Override
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public void accept(@NonNull I i) throws Exception {
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cache.putInfo(i);
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}
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});
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Single<I> load;
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if (forceLoad) {
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cache.removeInfo(serviceId, url);
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load = loadFromNetwork;
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} else {
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load = Maybe.concat(ExtractorHelper.<I>loadFromCache(serviceId, url), loadFromNetwork.toMaybe())
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.firstElement() //Take the first valid
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.toSingle();
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}
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return load;
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}
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/**
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* Default implementation uses the {@link InfoCache} to get cached results
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*/
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public static <I extends Info> Maybe<I> loadFromCache(final int serviceId, final String url) {
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checkServiceId(serviceId);
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return Maybe.defer(new Callable<MaybeSource<? extends I>>() {
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@Override
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public MaybeSource<? extends I> call() throws Exception {
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//noinspection unchecked
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I info = (I) cache.getFromKey(serviceId, url);
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if (MainActivity.DEBUG) Log.d(TAG, "loadFromCache() called, info > " + info);
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// Only return info if it's not null (it is cached)
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if (info != null) {
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return Maybe.just(info);
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}
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return Maybe.empty();
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}
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});
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}
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/**
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* Check if throwable have the cause that can be assignable from the causes to check.
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*
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* @see Class#isAssignableFrom(Class)
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*/
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public static boolean hasAssignableCauseThrowable(Throwable throwable, Class<?>... causesToCheck) {
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// Check if getCause is not the same as cause (the getCause is already the root),
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// as it will cause a infinite loop if it is
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Throwable cause, getCause = throwable;
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for (Class<?> causesEl : causesToCheck) {
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if (throwable.getClass().isAssignableFrom(causesEl)) {
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return true;
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}
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}
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while ((cause = throwable.getCause()) != null && getCause != cause) {
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getCause = cause;
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for (Class<?> causesEl : causesToCheck) {
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if (cause.getClass().isAssignableFrom(causesEl)) {
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return true;
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}
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}
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}
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return false;
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}
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/**
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* Check if throwable have the exact cause from one of the causes to check.
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*/
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public static boolean hasExactCauseThrowable(Throwable throwable, Class<?>... causesToCheck) {
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// Check if getCause is not the same as cause (the getCause is already the root),
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// as it will cause a infinite loop if it is
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Throwable cause, getCause = throwable;
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for (Class<?> causesEl : causesToCheck) {
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if (throwable.getClass().equals(causesEl)) {
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return true;
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}
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}
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while ((cause = throwable.getCause()) != null && getCause != cause) {
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getCause = cause;
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for (Class<?> causesEl : causesToCheck) {
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if (cause.getClass().equals(causesEl)) {
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return true;
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}
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}
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}
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return false;
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}
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/**
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* Check if throwable have Interrupted* exception as one of its causes.
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*/
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public static boolean isInterruptedCaused(Throwable throwable) {
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return ExtractorHelper.hasExactCauseThrowable(throwable, InterruptedIOException.class, InterruptedException.class);
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}
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}
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