Protobuf

app/src/main/java/xyz/quaver/pupil/proto/Settings.kt

@@ -0,0 +1,47 @@
+/*
+ *     Pupil, Hitomi.la viewer for Android
+ *     Copyright (C) 2021 tom5079
+ *
+ *     This program is free software: you can redistribute it and/or modify
+ *     it under the terms of the GNU General Public License as published by
+ *     the Free Software Foundation, either version 3 of the License, or
+ *     (at your option) any later version.
+ *
+ *     This program is distributed in the hope that it will be useful,
+ *     but WITHOUT ANY WARRANTY; without even the implied warranty of
+ *     MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ *     GNU General Public License for more details.
+ *
+ *     You should have received a copy of the GNU General Public License
+ *     along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ */
+
+package xyz.quaver.pupil.proto
+
+import android.content.Context
+import androidx.datastore.core.CorruptionException
+import androidx.datastore.core.DataStore
+import androidx.datastore.core.Serializer
+import androidx.datastore.dataStore
+import com.google.protobuf.InvalidProtocolBufferException
+import java.io.InputStream
+import java.io.OutputStream
+
+object SettingsSerializer : Serializer<Settings> {
+    override val defaultValue: Settings = Settings.getDefaultInstance()
+
+    override suspend fun readFrom(input: InputStream): Settings {
+        try {
+            return Settings.parseFrom(input)
+        } catch (exception: InvalidProtocolBufferException) {
+            throw CorruptionException("Cannot read proto.", exception)
+        }
+    }
+
+    override suspend fun writeTo(t: Settings, output: OutputStream) = t.writeTo(output)
+}
+
+val Context.settingsDataStore: DataStore<Settings> by dataStore(
+    fileName = "settings.proto",
+    serializer = SettingsSerializer
+)