[BackupRestorer] Handle uncompressed backups (#8988)
[Backups] Handle uncompressed backupspull/8989/head
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package eu.kanade.tachiyomi.util
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import android.content.Context
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import android.net.Uri
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import eu.kanade.tachiyomi.data.backup.BackupManager
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import eu.kanade.tachiyomi.data.backup.models.Backup
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import eu.kanade.tachiyomi.data.backup.models.BackupSerializer
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import okio.buffer
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import okio.gzip
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import okio.source
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object BackupUtil {
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/**
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* Decode a potentially-gzipped backup.
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*/
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fun decodeBackup(context: Context, uri: Uri): Backup {
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val backupManager = BackupManager(context)
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val backupStringSource = context.contentResolver.openInputStream(uri)!!.source().buffer()
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val peeked = backupStringSource.peek()
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peeked.require(2)
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val id1id2 = peeked.readShort()
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val backupString = if (id1id2.toInt() == 0x1f8b) { // 0x1f8b is gzip magic bytes
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backupStringSource.gzip().buffer()
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} else {
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backupStringSource
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}.use { it.readByteArray() }
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return backupManager.parser.decodeFromByteArray(BackupSerializer, backupString)
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}
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}
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