Include the prototype/explansion/zip packages with Ren'Py for now.

These were from https://github.com/danikula/Google-Play-Expansion-File,
and hosted on bintray, which is now down. This lets us keep building
for Android until we can move to asset delivery in the next release.

Author: renpytom

rapt/prototype/build.gradle

@@ -20,7 +20,6 @@ allprojects {
     repositories {
         google()
         jcenter()
-        maven { url 'https://dl.bintray.com/alexeydanilov/apk-expansion' }
     }
 
 }

rapt/prototype/expansion/build.gradle

@@ -0,0 +1,24 @@
+apply plugin: 'com.android.library'
+
+android {
+    compileSdkVersion 29
+
+    useLibrary 'org.apache.http.legacy'
+
+    defaultConfig {
+        minSdkVersion 19
+        targetSdkVersion 29
+        versionCode 2
+        versionName '1.3.3'
+    }
+
+    lintOptions {
+        abortOnError false
+    }
+}
+
+dependencies {
+    api project (':license')
+    api project (':zip')
+    compile 'org.slf4j:slf4j-api:1.7.7'
+}

rapt/prototype/expansion/src/main/AndroidManifest.xml

@@ -0,0 +1,9 @@
+<?xml version="1.0" encoding="utf-8"?>
+<manifest xmlns:android="http://schemas.android.com/apk/res/android"
+    package="com.android.vending.expansion.downloader"
+    android:versionCode="2"
+    android:versionName="1.1" >
+
+    <uses-sdk android:minSdkVersion="4" android:targetSdkVersion="22"/>
+    
+</manifest>

rapt/prototype/expansion/src/main/java/com/google/android/vending/expansion/downloader/Constants.java

@@ -0,0 +1,240 @@
+/*
+ * Copyright (C) 2012 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package com.google.android.vending.expansion.downloader;
+
+import java.io.File;
+
+
+/**
+ * Contains the internal constants that are used in the download manager.
+ * As a general rule, modifying these constants should be done with care.
+ */
+public class Constants {
+    /** Tag used for debugging/logging */
+    public static final String TAG = "LVLDL";
+
+    /**
+     * Expansion path where we store obb files
+     */
+    public static final String EXP_PATH = File.separator + "Android"
+            + File.separator + "obb" + File.separator;
+
+    // save to private app's data on Android 6.0 to skip requesting permission.
+    public static final String EXP_PATH_API23 = File.separator + "Android"
+            + File.separator + "data" + File.separator;
+
+    /** The intent that gets sent when the service must wake up for a retry */
+    public static final String ACTION_RETRY = "android.intent.action.DOWNLOAD_WAKEUP";
+
+    /** the intent that gets sent when clicking a successful download */
+    public static final String ACTION_OPEN = "android.intent.action.DOWNLOAD_OPEN";
+
+    /** the intent that gets sent when clicking an incomplete/failed download  */
+    public static final String ACTION_LIST = "android.intent.action.DOWNLOAD_LIST";
+
+    /** the intent that gets sent when deleting the notification of a completed download */
+    public static final String ACTION_HIDE = "android.intent.action.DOWNLOAD_HIDE";
+
+    /**
+     * When a number has to be appended to the filename, this string is used to separate the
+     * base filename from the sequence number
+     */
+    public static final String FILENAME_SEQUENCE_SEPARATOR = "-";
+
+    /** The default user agent used for downloads */
+    public static final String DEFAULT_USER_AGENT = "Android.LVLDM";
+
+    /** The buffer size used to stream the data */
+    public static final int BUFFER_SIZE = 4096;
+
+    /** The minimum amount of progress that has to be done before the progress bar gets updated */
+    public static final int MIN_PROGRESS_STEP = 4096;
+
+    /** The minimum amount of time that has to elapse before the progress bar gets updated, in ms */
+    public static final long MIN_PROGRESS_TIME = 1000;
+
+    /** The maximum number of rows in the database (FIFO) */
+    public static final int MAX_DOWNLOADS = 1000;
+
+    /**
+     * The number of times that the download manager will retry its network
+     * operations when no progress is happening before it gives up.
+     */
+    public static final int MAX_RETRIES = 5;
+
+    /**
+     * The minimum amount of time that the download manager accepts for
+     * a Retry-After response header with a parameter in delta-seconds.
+     */
+    public static final int MIN_RETRY_AFTER = 30; // 30s
+
+    /**
+     * The maximum amount of time that the download manager accepts for
+     * a Retry-After response header with a parameter in delta-seconds.
+     */
+    public static final int MAX_RETRY_AFTER = 24 * 60 * 60; // 24h
+
+    /**
+     * The maximum number of redirects.
+     */
+    public static final int MAX_REDIRECTS = 10;
+
+    /**
+     * The time between a failure and the first retry after an IOException.
+     * Each subsequent retry grows exponentially, doubling each time.
+     * The time is in seconds.
+     */
+    public static final int RETRY_FIRST_DELAY = 30;
+
+    /** Enable separate connectivity logging */
+    public static final boolean LOGX = true;
+
+    /** Enable verbose logging */
+    public static final boolean LOGV = false;
+
+    /** Enable super-verbose logging */
+    private static final boolean LOCAL_LOGVV = false;
+    public static final boolean LOGVV = LOCAL_LOGVV && LOGV;
+
+    /**
+     * This download has successfully completed.
+     * Warning: there might be other status values that indicate success
+     * in the future.
+     * Use isSucccess() to capture the entire category.
+     */
+    public static final int STATUS_SUCCESS = 200;
+
+    /**
+     * This request couldn't be parsed. This is also used when processing
+     * requests with unknown/unsupported URI schemes.
+     */
+    public static final int STATUS_BAD_REQUEST = 400;
+
+    /**
+     * This download can't be performed because the content type cannot be
+     * handled.
+     */
+    public static final int STATUS_NOT_ACCEPTABLE = 406;
+
+    /**
+     * This download cannot be performed because the length cannot be
+     * determined accurately. This is the code for the HTTP error "Length
+     * Required", which is typically used when making requests that require
+     * a content length but don't have one, and it is also used in the
+     * client when a response is received whose length cannot be determined
+     * accurately (therefore making it impossible to know when a download
+     * completes).
+     */
+    public static final int STATUS_LENGTH_REQUIRED = 411;
+
+    /**
+     * This download was interrupted and cannot be resumed.
+     * This is the code for the HTTP error "Precondition Failed", and it is
+     * also used in situations where the client doesn't have an ETag at all.
+     */
+    public static final int STATUS_PRECONDITION_FAILED = 412;
+
+    /**
+     * The lowest-valued error status that is not an actual HTTP status code.
+     */
+    public static final int MIN_ARTIFICIAL_ERROR_STATUS = 488;
+
+    /**
+     * The requested destination file already exists.
+     */
+    public static final int STATUS_FILE_ALREADY_EXISTS_ERROR = 488;
+
+    /**
+     * Some possibly transient error occurred, but we can't resume the download.
+     */
+    public static final int STATUS_CANNOT_RESUME = 489;
+
+    /**
+     * This download was canceled
+     */
+    public static final int STATUS_CANCELED = 490;
+
+    /**
+     * This download has completed with an error.
+     * Warning: there will be other status values that indicate errors in
+     * the future. Use isStatusError() to capture the entire category.
+     */
+    public static final int STATUS_UNKNOWN_ERROR = 491;
+
+    /**
+     * This download couldn't be completed because of a storage issue.
+     * Typically, that's because the filesystem is missing or full.
+     * Use the more specific {@link #STATUS_INSUFFICIENT_SPACE_ERROR}
+     * and {@link #STATUS_DEVICE_NOT_FOUND_ERROR} when appropriate.
+     */
+    public static final int STATUS_FILE_ERROR = 492;
+
+    /**
+     * This download couldn't be completed because of an HTTP
+     * redirect response that the download manager couldn't
+     * handle.
+     */
+    public static final int STATUS_UNHANDLED_REDIRECT = 493;
+
+    /**
+     * This download couldn't be completed because of an
+     * unspecified unhandled HTTP code.
+     */
+    public static final int STATUS_UNHANDLED_HTTP_CODE = 494;
+
+    /**
+     * This download couldn't be completed because of an
+     * error receiving or processing data at the HTTP level.
+     */
+    public static final int STATUS_HTTP_DATA_ERROR = 495;
+
+    /**
+     * This download couldn't be completed because of an
+     * HttpException while setting up the request.
+     */
+    public static final int STATUS_HTTP_EXCEPTION = 496;
+
+    /**
+     * This download couldn't be completed because there were
+     * too many redirects.
+     */
+    public static final int STATUS_TOO_MANY_REDIRECTS = 497;
+
+    /**
+     * This download couldn't be completed due to insufficient storage
+     * space.  Typically, this is because the SD card is full.
+     */
+    public static final int STATUS_INSUFFICIENT_SPACE_ERROR = 498;
+
+    /**
+     * This download couldn't be completed because no external storage
+     * device was found.  Typically, this is because the SD card is not
+     * mounted.
+     */
+    public static final int STATUS_DEVICE_NOT_FOUND_ERROR = 499;
+
+    /**
+     * The wake duration to check to see if a download is possible.
+     */
+    public static final long WATCHDOG_WAKE_TIMER = 60*1000;
+
+    /**
+     * The wake duration to check to see if the process was killed.
+     */
+    public static final long ACTIVE_THREAD_WATCHDOG = 5*1000;
+
+}

rapt/prototype/expansion/src/main/java/com/google/android/vending/expansion/downloader/DownloadProgressInfo.java

@@ -0,0 +1,80 @@
+/*
+ * Copyright (C) 2012 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package com.google.android.vending.expansion.downloader;
+
+import android.os.Parcel;
+import android.os.Parcelable;
+
+
+/**
+ * This class contains progress information about the active download(s).
+ *
+ * When you build the Activity that initiates a download and tracks the
+ * progress by implementing the {@link IDownloaderClient} interface, you'll
+ * receive a DownloadProgressInfo object in each call to the {@link
+ * IDownloaderClient#onDownloadProgress} method. This allows you to update
+ * your activity's UI with information about the download progress, such
+ * as the progress so far, time remaining and current speed.
+ */
+public class DownloadProgressInfo implements Parcelable {
+    public long mOverallTotal;
+    public long mOverallProgress;
+    public long mTimeRemaining; // time remaining
+    public float mCurrentSpeed; // speed in KB/S
+
+    @Override
+    public int describeContents() {
+        return 0;
+    }
+
+    @Override
+    public void writeToParcel(Parcel p, int i) {
+        p.writeLong(mOverallTotal);
+        p.writeLong(mOverallProgress);
+        p.writeLong(mTimeRemaining);
+        p.writeFloat(mCurrentSpeed);
+    }
+
+    public DownloadProgressInfo(Parcel p) {
+        mOverallTotal = p.readLong();
+        mOverallProgress = p.readLong();
+        mTimeRemaining = p.readLong();
+        mCurrentSpeed = p.readFloat();
+    }
+
+    public DownloadProgressInfo(long overallTotal, long overallProgress,
+            long timeRemaining,
+            float currentSpeed) {
+        this.mOverallTotal = overallTotal;
+        this.mOverallProgress = overallProgress;
+        this.mTimeRemaining = timeRemaining;
+        this.mCurrentSpeed = currentSpeed;
+    }
+
+    public static final Creator<DownloadProgressInfo> CREATOR = new Creator<DownloadProgressInfo>() {
+        @Override
+        public DownloadProgressInfo createFromParcel(Parcel parcel) {
+            return new DownloadProgressInfo(parcel);
+        }
+
+        @Override
+        public DownloadProgressInfo[] newArray(int i) {
+            return new DownloadProgressInfo[i];
+        }
+    };
+
+}