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/* -*- Mode: Java; c-basic-offset: 4; tab-width: 20; indent-tabs-mode: nil; -*-
* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this
package org.mozilla.tv.firefox.utils
import android.content.Context
import java.io.File
// WebView directory and contents.
private const val WEBVIEW_DIRECTORY = "app_webview"
private const val LOCAL_STORAGE_DIR = "Local Storage"
// Cache directory contents.
private const val WEBVIEW_CACHE_DIR = "org.chromium.android_webview"
class FileUtils {
companion object {
@JvmStatic
fun truncateCacheDirectory(context: Context) = deleteContent(context.cacheDir, doNotEraseWhitelist = setOf(
// If the folder or its contents are deleted, WebView will stop using the disk cache entirely.
WEBVIEW_CACHE_DIR
))
@JvmStatic
fun deleteWebViewDirectory(context: Context): Boolean {
val webviewDirectory = File(context.applicationInfo.dataDir, WEBVIEW_DIRECTORY)
return deleteContent(webviewDirectory, doNotEraseWhitelist = setOf(
// If the folder or its contents is deleted, WebStorage.deleteAllData does not clear Local Storage
// in memory.
LOCAL_STORAGE_DIR
))
}
private fun deleteContent(directory: File, doNotEraseWhitelist: Set<String> = emptySet()): Boolean {
val filesToDelete = directory.listFiles()?.filter { !doNotEraseWhitelist.contains(it.name) } ?: return false
return filesToDelete.all { it.deleteRecursively() }
}
}
}