[YouTube] Add support for showRenderers in search results

extractor/src/main/java/org/schabi/newpipe/extractor/services/youtube/extractors/YoutubeSearchExtractor.java

@@ -238,9 +238,14 @@ public class YoutubeSearchExtractor extends SearchExtractor {
             } else if (extractChannelResults && item.has("channelRenderer")) {
                 collector.commit(new YoutubeChannelInfoItemExtractor(
                         item.getObject("channelRenderer")));
-            } else if (extractPlaylistResults && item.has("playlistRenderer")) {
+            } else if (extractPlaylistResults) {
+                if (item.has("playlistRenderer")) {
                     collector.commit(new YoutubePlaylistInfoItemExtractor(
                             item.getObject("playlistRenderer")));
+                } else if (item.has("showRenderer")) {
+                    collector.commit(new YoutubeShowRendererInfoItemExtractor(
+                            item.getObject("showRenderer")));
+                }
             }
         }
     }

extractor/src/main/java/org/schabi/newpipe/extractor/services/youtube/extractors/YoutubeShowRendererInfoItemExtractor.java

@@ -0,0 +1,57 @@
+package org.schabi.newpipe.extractor.services.youtube.extractors;
+
+import com.grack.nanojson.JsonObject;
+import org.schabi.newpipe.extractor.exceptions.ParsingException;
+
+import javax.annotation.Nonnull;
+
+import static org.schabi.newpipe.extractor.services.youtube.YoutubeParsingHelper.getTextFromObject;
+import static org.schabi.newpipe.extractor.services.youtube.YoutubeParsingHelper.getUrlFromObject;
+import static org.schabi.newpipe.extractor.utils.Utils.isNullOrEmpty;
+
+/**
+ * A {@link YoutubeBaseShowInfoItemExtractor} implementation for {@code showRenderer}s.
+ */
+class YoutubeShowRendererInfoItemExtractor extends YoutubeBaseShowInfoItemExtractor {
+
+    @Nonnull
+    private final JsonObject shortBylineText;
+    @Nonnull
+    private final JsonObject longBylineText;
+
+    YoutubeShowRendererInfoItemExtractor(@Nonnull final JsonObject showRenderer) {
+        super(showRenderer);
+        this.shortBylineText = showRenderer.getObject("shortBylineText");
+        this.longBylineText = showRenderer.getObject("longBylineText");
+    }
+
+    @Override
+    public String getUploaderName() throws ParsingException {
+        String name = getTextFromObject(longBylineText);
+        if (isNullOrEmpty(name)) {
+            name = getTextFromObject(shortBylineText);
+            if (isNullOrEmpty(name)) {
+                throw new ParsingException("Could not get uploader name");
+            }
+        }
+        return name;
+    }
+
+    @Override
+    public String getUploaderUrl() throws ParsingException {
+        String uploaderUrl = getUrlFromObject(longBylineText);
+        if (uploaderUrl == null) {
+            uploaderUrl = getUrlFromObject(shortBylineText);
+            if (uploaderUrl == null) {
+                throw new ParsingException("Could not get uploader URL");
+            }
+        }
+        return uploaderUrl;
+    }
+
+    @Override
+    public boolean isUploaderVerified() throws ParsingException {
+        // We do not have this information in showRenderers
+        return false;
+    }
+}