chore: Separate extensions by app (#3905)

extensions/tumblr/build.gradle.kts

@@ -0,0 +1,3 @@
+dependencies {
+    compileOnly(project(":extensions:tumblr:stub"))
+}

extensions/tumblr/src/main/AndroidManifest.xml

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+<manifest/>

extensions/tumblr/src/main/java/app/revanced/extension/tumblr/patches/TimelineFilterPatch.java

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+package app.revanced.extension.tumblr.patches;
+
+import com.tumblr.rumblr.model.TimelineObject;
+import com.tumblr.rumblr.model.Timelineable;
+
+import java.util.HashSet;
+import java.util.List;
+
+public final class TimelineFilterPatch {
+    private static final HashSet<String> blockedObjectTypes = new HashSet<>();
+
+    static {
+        // This dummy gets removed by the TimelineFilterPatch and in its place,
+        // equivalent instructions with a different constant string
+        // will be inserted for each Timeline object type filter.
+        // Modifying this line may break the patch.
+        blockedObjectTypes.add("BLOCKED_OBJECT_DUMMY");
+    }
+
+    // Calls to this method are injected where the list of Timeline objects is first received.
+    // We modify the list filter out elements that we want to hide.
+    public static void filterTimeline(final List<TimelineObject<? extends Timelineable>> timelineObjects) {
+        final var iterator = timelineObjects.iterator();
+        while (iterator.hasNext()) {
+            var timelineElement = iterator.next();
+            if (timelineElement == null) continue;
+
+            String elementType = timelineElement.getData().getTimelineObjectType().toString();
+            if (blockedObjectTypes.contains(elementType)) iterator.remove();
+        }
+    }
+}

extensions/tumblr/stub/build.gradle.kts

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+plugins {
+    id(libs.plugins.android.library.get().pluginId)
+}
+
+android {
+    namespace = "app.revanced.extension"
+    compileSdk = 33
+
+    defaultConfig {
+        minSdk = 24
+    }
+
+    compileOptions {
+        sourceCompatibility = JavaVersion.VERSION_11
+        targetCompatibility = JavaVersion.VERSION_11
+    }
+}

extensions/tumblr/stub/src/main/AndroidManifest.xml

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+<manifest/>

extensions/tumblr/stub/src/main/java/com/tumblr/rumblr/model/TimelineObject.java

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+package com.tumblr.rumblr.model;
+
+public class TimelineObject<T extends Timelineable> {
+    public final T getData() {
+        throw new UnsupportedOperationException("Stub");
+    }
+
+}

extensions/tumblr/stub/src/main/java/com/tumblr/rumblr/model/TimelineObjectType.java

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+package com.tumblr.rumblr.model;
+
+public enum TimelineObjectType {
+}

extensions/tumblr/stub/src/main/java/com/tumblr/rumblr/model/Timelineable.java

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+package com.tumblr.rumblr.model;
+
+public interface Timelineable {
+    TimelineObjectType getTimelineObjectType();
+}