android: Convert GameProvider to Kotlin

src/android/app/src/main/java/org/yuzu/yuzu_emu/model/GameProvider.java

@@ -1,138 +0,0 @@
-package org.yuzu.yuzu_emu.model;
-
-import android.content.ContentProvider;
-import android.content.ContentValues;
-import android.database.Cursor;
-import android.database.sqlite.SQLiteDatabase;
-import android.net.Uri;
-
-import androidx.annotation.NonNull;
-
-import org.yuzu.yuzu_emu.BuildConfig;
-import org.yuzu.yuzu_emu.utils.Log;
-
-/**
- * Provides an interface allowing Activities to interact with the SQLite database.
- * CRUD methods in this class can be called by Activities using getContentResolver().
- */
-public final class GameProvider extends ContentProvider {
-    public static final String REFRESH_LIBRARY = "refresh";
-    public static final String RESET_LIBRARY = "reset";
-
-    public static final String AUTHORITY = "content://" + BuildConfig.APPLICATION_ID + ".provider";
-    public static final Uri URI_FOLDER =
-            Uri.parse(AUTHORITY + "/" + GameDatabase.TABLE_NAME_FOLDERS + "/");
-    public static final Uri URI_REFRESH = Uri.parse(AUTHORITY + "/" + REFRESH_LIBRARY + "/");
-    public static final Uri URI_RESET = Uri.parse(AUTHORITY + "/" + RESET_LIBRARY + "/");
-
-    public static final String MIME_TYPE_FOLDER = "vnd.android.cursor.item/vnd.dolphin.folder";
-    public static final String MIME_TYPE_GAME = "vnd.android.cursor.item/vnd.dolphin.game";
-
-
-    private GameDatabase mDbHelper;
-
-    @Override
-    public boolean onCreate() {
-        Log.info("[GameProvider] Creating Content Provider...");
-
-        mDbHelper = new GameDatabase(getContext());
-
-        return true;
-    }
-
-    @Override
-    public Cursor query(@NonNull Uri uri, String[] projection, String selection,
-                        String[] selectionArgs, String sortOrder) {
-        Log.info("[GameProvider] Querying URI: " + uri);
-
-        SQLiteDatabase db = mDbHelper.getReadableDatabase();
-
-        String table = uri.getLastPathSegment();
-
-        if (table == null) {
-            Log.error("[GameProvider] Badly formatted URI: " + uri);
-            return null;
-        }
-
-        Cursor cursor = db.query(table, projection, selection, selectionArgs, null, null, sortOrder);
-        cursor.setNotificationUri(getContext().getContentResolver(), uri);
-
-        return cursor;
-    }
-
-    @Override
-    public String getType(@NonNull Uri uri) {
-        Log.verbose("[GameProvider] Getting MIME type for URI: " + uri);
-        String lastSegment = uri.getLastPathSegment();
-
-        if (lastSegment == null) {
-            Log.error("[GameProvider] Badly formatted URI: " + uri);
-            return null;
-        }
-
-        if (lastSegment.equals(GameDatabase.TABLE_NAME_FOLDERS)) {
-            return MIME_TYPE_FOLDER;
-        } else if (lastSegment.equals(GameDatabase.TABLE_NAME_GAMES)) {
-            return MIME_TYPE_GAME;
-        }
-
-        Log.error("[GameProvider] Unknown MIME type for URI: " + uri);
-        return null;
-    }
-
-    @Override
-    public Uri insert(@NonNull Uri uri, ContentValues values) {
-        Log.info("[GameProvider] Inserting row at URI: " + uri);
-
-        SQLiteDatabase database = mDbHelper.getWritableDatabase();
-        String table = uri.getLastPathSegment();
-
-        if (table != null) {
-            if (table.equals(RESET_LIBRARY)) {
-                mDbHelper.resetDatabase(database);
-                return uri;
-            }
-            if (table.equals(REFRESH_LIBRARY)) {
-                Log.info(
-                        "[GameProvider] URI specified table REFRESH_LIBRARY. No insertion necessary; refreshing library contents...");
-                mDbHelper.scanLibrary(database);
-                return uri;
-            }
-
-            long id = database.insertWithOnConflict(table, null, values, SQLiteDatabase.CONFLICT_IGNORE);
-
-            // If insertion was successful...
-            if (id > 0) {
-                // If we just added a folder, add its contents to the game list.
-                if (table.equals(GameDatabase.TABLE_NAME_FOLDERS)) {
-                    mDbHelper.scanLibrary(database);
-                }
-
-                // Notify the UI that its contents should be refreshed.
-                getContext().getContentResolver().notifyChange(uri, null);
-                uri = Uri.withAppendedPath(uri, Long.toString(id));
-            } else {
-                Log.error("[GameProvider] Row already exists: " + uri + " id: " + id);
-            }
-        } else {
-            Log.error("[GameProvider] Badly formatted URI: " + uri);
-        }
-
-        database.close();
-
-        return uri;
-    }
-
-    @Override
-    public int delete(@NonNull Uri uri, String selection, String[] selectionArgs) {
-        Log.error("[GameProvider] Delete operations unsupported. URI: " + uri);
-        return 0;
-    }
-
-    @Override
-    public int update(@NonNull Uri uri, ContentValues values, String selection,
-                      String[] selectionArgs) {
-        Log.error("[GameProvider] Update operations unsupported. URI: " + uri);
-        return 0;
-    }
-}

src/android/app/src/main/java/org/yuzu/yuzu_emu/model/GameProvider.kt

@@ -0,0 +1,127 @@
+package org.yuzu.yuzu_emu.model
+
+import android.content.ContentProvider
+import android.content.ContentValues
+import android.database.Cursor
+import android.database.sqlite.SQLiteDatabase
+import android.net.Uri
+import org.yuzu.yuzu_emu.BuildConfig
+import org.yuzu.yuzu_emu.utils.Log
+
+/**
+ * Provides an interface allowing Activities to interact with the SQLite database.
+ * CRUD methods in this class can be called by Activities using getContentResolver().
+ */
+class GameProvider : ContentProvider() {
+    private var mDbHelper: GameDatabase? = null
+    override fun onCreate(): Boolean {
+        Log.info("[GameProvider] Creating Content Provider...")
+        mDbHelper = GameDatabase(context!!)
+        return true
+    }
+
+    override fun query(
+        uri: Uri,
+        projection: Array<String>?,
+        selection: String?,
+        selectionArgs: Array<String>?,
+        sortOrder: String?
+    ): Cursor? {
+        Log.info("[GameProvider] Querying URI: $uri")
+        val db = mDbHelper!!.readableDatabase
+        val table = uri.lastPathSegment
+        if (table == null) {
+            Log.error("[GameProvider] Badly formatted URI: $uri")
+            return null
+        }
+        val cursor = db.query(table, projection, selection, selectionArgs, null, null, sortOrder)
+        cursor.setNotificationUri(context!!.contentResolver, uri)
+        return cursor
+    }
+
+    override fun getType(uri: Uri): String? {
+        Log.verbose("[GameProvider] Getting MIME type for URI: $uri")
+        val lastSegment = uri.lastPathSegment
+        if (lastSegment == null) {
+            Log.error("[GameProvider] Badly formatted URI: $uri")
+            return null
+        }
+        if (lastSegment == GameDatabase.TABLE_NAME_FOLDERS) {
+            return MIME_TYPE_FOLDER
+        } else if (lastSegment == GameDatabase.TABLE_NAME_GAMES) {
+            return MIME_TYPE_GAME
+        }
+        Log.error("[GameProvider] Unknown MIME type for URI: $uri")
+        return null
+    }
+
+    override fun insert(uri: Uri, values: ContentValues?): Uri {
+        var realUri = uri
+        Log.info("[GameProvider] Inserting row at URI: $realUri")
+        val database = mDbHelper!!.writableDatabase
+        val table = realUri.lastPathSegment
+        if (table != null) {
+            if (table == RESET_LIBRARY) {
+                mDbHelper!!.resetDatabase(database)
+                return realUri
+            }
+            if (table == REFRESH_LIBRARY) {
+                Log.info(
+                    "[GameProvider] URI specified table REFRESH_LIBRARY. No insertion necessary; refreshing library contents..."
+                )
+                mDbHelper!!.scanLibrary(database)
+                return realUri
+            }
+            val id =
+                database.insertWithOnConflict(table, null, values, SQLiteDatabase.CONFLICT_IGNORE)
+
+            // If insertion was successful...
+            if (id > 0) {
+                // If we just added a folder, add its contents to the game list.
+                if (table == GameDatabase.TABLE_NAME_FOLDERS) {
+                    mDbHelper!!.scanLibrary(database)
+                }
+
+                // Notify the UI that its contents should be refreshed.
+                context!!.contentResolver.notifyChange(realUri, null)
+                realUri = Uri.withAppendedPath(realUri, id.toString())
+            } else {
+                Log.error("[GameProvider] Row already exists: $realUri id: $id")
+            }
+        } else {
+            Log.error("[GameProvider] Badly formatted URI: $realUri")
+        }
+        database.close()
+        return realUri
+    }
+
+    override fun delete(uri: Uri, selection: String?, selectionArgs: Array<String>?): Int {
+        Log.error("[GameProvider] Delete operations unsupported. URI: $uri")
+        return 0
+    }
+
+    override fun update(
+        uri: Uri, values: ContentValues?, selection: String?,
+        selectionArgs: Array<String>?
+    ): Int {
+        Log.error("[GameProvider] Update operations unsupported. URI: $uri")
+        return 0
+    }
+
+    companion object {
+        const val REFRESH_LIBRARY = "refresh"
+        const val RESET_LIBRARY = "reset"
+        private const val AUTHORITY = "content://${BuildConfig.APPLICATION_ID}.provider"
+
+        @JvmField
+        val URI_FOLDER: Uri = Uri.parse("$AUTHORITY/${GameDatabase.TABLE_NAME_FOLDERS}/")
+
+        @JvmField
+        val URI_REFRESH: Uri = Uri.parse("$AUTHORITY/$REFRESH_LIBRARY/")
+
+        @JvmField
+        val URI_RESET: Uri = Uri.parse("$AUTHORITY/$RESET_LIBRARY/")
+        const val MIME_TYPE_FOLDER = "vnd.android.cursor.item/vnd.yuzu.folder"
+        const val MIME_TYPE_GAME = "vnd.android.cursor.item/vnd.yuzu.game"
+    }
+}