67 lines
2.2 KiB
Kotlin
67 lines
2.2 KiB
Kotlin
/*
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* Pupil, Hitomi.la viewer for Android
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* Copyright (C) 2019 tom5079
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*
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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 xyz.quaver.pupil.util
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import android.content.Context
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import kotlinx.coroutines.CoroutineScope
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import kotlinx.coroutines.Dispatchers
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import kotlinx.coroutines.launch
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import kotlinx.coroutines.sync.Mutex
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import kotlinx.coroutines.sync.withLock
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import xyz.quaver.pupil.histories
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import xyz.quaver.pupil.util.downloader.Cache
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import xyz.quaver.pupil.util.downloader.DownloadManager
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import java.io.File
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val mutex = Mutex()
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fun cleanCache(context: Context) = CoroutineScope(Dispatchers.IO).launch {
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if (mutex.isLocked) return@launch
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mutex.withLock {
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val cacheFolder = File(context.cacheDir, "imageCache")
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val downloadManager = DownloadManager.getInstance(context)
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val limit = (Preferences.get<String>("cache_limit").toLongOrNull() ?: 0L)*1024*1024*1024
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if (limit == 0L) return@withLock
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val cacheSize = {
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var size = 0L
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cacheFolder.walk().forEach {
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size += it.length()
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}
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size
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}
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if (cacheSize.invoke() > limit)
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while (cacheSize.invoke() > limit/2) {
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val caches = cacheFolder.list() ?: return@withLock
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synchronized(histories) {
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(histories.firstOrNull {
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caches.contains(it.toString()) && !downloadManager.isDownloading(it)
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} ?: return@withLock).let {
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Cache.delete(context, it)
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}
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}
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}
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}
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} |