android: Convert GameDatabase to Kotlin
This commit is contained in:
Charles Lombardo
@@ -1,275 +0,0 @@
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package org.yuzu.yuzu_emu.model;
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import android.content.ContentValues;
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import android.content.Context;
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import android.database.Cursor;
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import android.database.sqlite.SQLiteDatabase;
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import android.database.sqlite.SQLiteOpenHelper;
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import android.net.Uri;
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import org.yuzu.yuzu_emu.NativeLibrary;
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import org.yuzu.yuzu_emu.utils.FileUtil;
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import org.yuzu.yuzu_emu.utils.Log;
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import java.io.File;
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import java.util.Arrays;
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import java.util.HashSet;
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import java.util.Set;
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import rx.Observable;
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/**
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* A helper class that provides several utilities simplifying interaction with
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* the SQLite database.
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*/
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public final class GameDatabase extends SQLiteOpenHelper {
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public static final int COLUMN_DB_ID = 0;
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public static final int GAME_COLUMN_PATH = 1;
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public static final int GAME_COLUMN_TITLE = 2;
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public static final int GAME_COLUMN_DESCRIPTION = 3;
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public static final int GAME_COLUMN_REGIONS = 4;
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public static final int GAME_COLUMN_GAME_ID = 5;
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public static final int GAME_COLUMN_CAPTION = 6;
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public static final int FOLDER_COLUMN_PATH = 1;
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public static final String KEY_DB_ID = "_id";
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public static final String KEY_GAME_PATH = "path";
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public static final String KEY_GAME_TITLE = "title";
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public static final String KEY_GAME_DESCRIPTION = "description";
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public static final String KEY_GAME_REGIONS = "regions";
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public static final String KEY_GAME_ID = "game_id";
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public static final String KEY_GAME_COMPANY = "company";
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public static final String KEY_FOLDER_PATH = "path";
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public static final String TABLE_NAME_FOLDERS = "folders";
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public static final String TABLE_NAME_GAMES = "games";
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private static final int DB_VERSION = 2;
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private static final String TYPE_PRIMARY = " INTEGER PRIMARY KEY";
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private static final String TYPE_INTEGER = " INTEGER";
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private static final String TYPE_STRING = " TEXT";
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private static final String CONSTRAINT_UNIQUE = " UNIQUE";
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private static final String SEPARATOR = ", ";
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private static final String SQL_CREATE_GAMES = "CREATE TABLE " + TABLE_NAME_GAMES + "("
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+ KEY_DB_ID + TYPE_PRIMARY + SEPARATOR
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+ KEY_GAME_PATH + TYPE_STRING + SEPARATOR
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+ KEY_GAME_TITLE + TYPE_STRING + SEPARATOR
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+ KEY_GAME_DESCRIPTION + TYPE_STRING + SEPARATOR
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+ KEY_GAME_REGIONS + TYPE_STRING + SEPARATOR
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+ KEY_GAME_ID + TYPE_STRING + SEPARATOR
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+ KEY_GAME_COMPANY + TYPE_STRING + ")";
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private static final String SQL_CREATE_FOLDERS = "CREATE TABLE " + TABLE_NAME_FOLDERS + "("
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+ KEY_DB_ID + TYPE_PRIMARY + SEPARATOR
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+ KEY_FOLDER_PATH + TYPE_STRING + CONSTRAINT_UNIQUE + ")";
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private static final String SQL_DELETE_FOLDERS = "DROP TABLE IF EXISTS " + TABLE_NAME_FOLDERS;
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private static final String SQL_DELETE_GAMES = "DROP TABLE IF EXISTS " + TABLE_NAME_GAMES;
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private final Context context;
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public GameDatabase(Context context) {
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// Superclass constructor builds a database or uses an existing one.
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super(context, "games.db", null, DB_VERSION);
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this.context = context;
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}
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@Override
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public void onCreate(SQLiteDatabase database) {
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Log.debug("[GameDatabase] GameDatabase - Creating database...");
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execSqlAndLog(database, SQL_CREATE_GAMES);
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execSqlAndLog(database, SQL_CREATE_FOLDERS);
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}
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@Override
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public void onDowngrade(SQLiteDatabase database, int oldVersion, int newVersion) {
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Log.verbose("[GameDatabase] Downgrades not supporting, clearing databases..");
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execSqlAndLog(database, SQL_DELETE_FOLDERS);
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execSqlAndLog(database, SQL_CREATE_FOLDERS);
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execSqlAndLog(database, SQL_DELETE_GAMES);
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execSqlAndLog(database, SQL_CREATE_GAMES);
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}
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@Override
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public void onUpgrade(SQLiteDatabase database, int oldVersion, int newVersion) {
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Log.info("[GameDatabase] Upgrading database from schema version " + oldVersion + " to " +
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newVersion);
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// Delete all the games
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execSqlAndLog(database, SQL_DELETE_GAMES);
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execSqlAndLog(database, SQL_CREATE_GAMES);
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}
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public void resetDatabase(SQLiteDatabase database) {
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execSqlAndLog(database, SQL_DELETE_FOLDERS);
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execSqlAndLog(database, SQL_CREATE_FOLDERS);
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execSqlAndLog(database, SQL_DELETE_GAMES);
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execSqlAndLog(database, SQL_CREATE_GAMES);
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}
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public void scanLibrary(SQLiteDatabase database) {
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// Before scanning known folders, go through the game table and remove any entries for which the file itself is missing.
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Cursor fileCursor = database.query(TABLE_NAME_GAMES,
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null, // Get all columns.
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null, // Get all rows.
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null,
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null, // No grouping.
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null,
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null); // Order of games is irrelevant.
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// Possibly overly defensive, but ensures that moveToNext() does not skip a row.
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fileCursor.moveToPosition(-1);
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while (fileCursor.moveToNext()) {
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String gamePath = fileCursor.getString(GAME_COLUMN_PATH);
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File game = new File(gamePath);
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if (!game.exists()) {
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database.delete(TABLE_NAME_GAMES,
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KEY_DB_ID + " = ?",
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new String[]{Long.toString(fileCursor.getLong(COLUMN_DB_ID))});
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}
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}
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// Get a cursor listing all the folders the user has added to the library.
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Cursor folderCursor = database.query(TABLE_NAME_FOLDERS,
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null, // Get all columns.
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null, // Get all rows.
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null,
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null, // No grouping.
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null,
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null); // Order of folders is irrelevant.
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Set<String> allowedExtensions = new HashSet<String>(Arrays.asList(
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".xci", ".nsp", ".nca", ".nro"));
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// Possibly overly defensive, but ensures that moveToNext() does not skip a row.
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folderCursor.moveToPosition(-1);
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// Iterate through all results of the DB query (i.e. all folders in the library.)
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while (folderCursor.moveToNext()) {
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String folderPath = folderCursor.getString(FOLDER_COLUMN_PATH);
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Uri folderUri = Uri.parse(folderPath);
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// If the folder is empty because it no longer exists, remove it from the library.
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if (FileUtil.listFiles(context, folderUri).length == 0) {
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Log.error(
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"[GameDatabase] Folder no longer exists. Removing from the library: " + folderPath);
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database.delete(TABLE_NAME_FOLDERS,
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KEY_DB_ID + " = ?",
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new String[]{Long.toString(folderCursor.getLong(COLUMN_DB_ID))});
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}
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this.addGamesRecursive(database, folderUri, allowedExtensions, 3);
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}
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fileCursor.close();
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folderCursor.close();
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database.close();
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}
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private void addGamesRecursive(SQLiteDatabase database, Uri parent, Set<String> allowedExtensions, int depth) {
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if (depth <= 0) {
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return;
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}
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// Ensure keys are loaded so that ROM metadata can be decrypted.
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NativeLibrary.ReloadKeys();
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MinimalDocumentFile[] children = FileUtil.listFiles(context, parent);
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for (MinimalDocumentFile file : children) {
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if (file.isDirectory()) {
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Set<String> newExtensions = new HashSet<>(Arrays.asList(
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".xci", ".nsp", ".nca", ".nro"));
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this.addGamesRecursive(database, file.getUri(), newExtensions, depth - 1);
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} else {
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String filename = file.getUri().toString();
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int extensionStart = filename.lastIndexOf('.');
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if (extensionStart > 0) {
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String fileExtension = filename.substring(extensionStart);
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// Check that the file has an extension we care about before trying to read out of it.
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if (allowedExtensions.contains(fileExtension.toLowerCase())) {
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attemptToAddGame(database, filename);
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}
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}
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}
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}
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}
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private static void attemptToAddGame(SQLiteDatabase database, String filePath) {
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String name = NativeLibrary.GetTitle(filePath);
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// If the game's title field is empty, use the filename.
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if (name.isEmpty()) {
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name = filePath.substring(filePath.lastIndexOf("/") + 1);
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}
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String gameId = NativeLibrary.GetGameId(filePath);
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// If the game's ID field is empty, use the filename without extension.
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if (gameId.isEmpty()) {
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gameId = filePath.substring(filePath.lastIndexOf("/") + 1,
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filePath.lastIndexOf("."));
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}
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ContentValues game = Game.asContentValues(name,
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NativeLibrary.GetDescription(filePath).replace("\n", " "),
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NativeLibrary.GetRegions(filePath),
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filePath,
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gameId,
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NativeLibrary.GetCompany(filePath));
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// Try to update an existing game first.
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int rowsMatched = database.update(TABLE_NAME_GAMES, // Which table to update.
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game,
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// The values to fill the row with.
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KEY_GAME_ID + " = ?",
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// The WHERE clause used to find the right row.
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new String[]{game.getAsString(
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KEY_GAME_ID)}); // The ? in WHERE clause is replaced with this,
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// which is provided as an array because there
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// could potentially be more than one argument.
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// If update fails, insert a new game instead.
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if (rowsMatched == 0) {
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Log.verbose("[GameDatabase] Adding game: " + game.getAsString(KEY_GAME_TITLE));
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database.insert(TABLE_NAME_GAMES, null, game);
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} else {
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Log.verbose("[GameDatabase] Updated game: " + game.getAsString(KEY_GAME_TITLE));
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}
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}
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public Observable<Cursor> getGames() {
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return Observable.create(subscriber ->
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{
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Log.info("[GameDatabase] Reading games list...");
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SQLiteDatabase database = getReadableDatabase();
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Cursor resultCursor = database.query(
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TABLE_NAME_GAMES,
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null,
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null,
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null,
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null,
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null,
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KEY_GAME_TITLE + " ASC"
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);
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// Pass the result cursor to the consumer.
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subscriber.onNext(resultCursor);
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// Tell the consumer we're done; it will unsubscribe implicitly.
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subscriber.onCompleted();
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});
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}
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private void execSqlAndLog(SQLiteDatabase database, String sql) {
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Log.verbose("[GameDatabase] Executing SQL: " + sql);
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database.execSQL(sql);
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}
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}
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@@ -0,0 +1,260 @@
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package org.yuzu.yuzu_emu.model
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import android.content.Context
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import android.database.Cursor
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import android.database.sqlite.SQLiteDatabase
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import android.database.sqlite.SQLiteOpenHelper
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import android.net.Uri
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import org.yuzu.yuzu_emu.NativeLibrary
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import org.yuzu.yuzu_emu.utils.FileUtil
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import org.yuzu.yuzu_emu.utils.Log
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import rx.Observable
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import rx.Subscriber
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import java.io.File
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import java.util.*
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/**
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* A helper class that provides several utilities simplifying interaction with
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* the SQLite database.
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*/
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class GameDatabase(private val context: Context) :
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SQLiteOpenHelper(context, "games.db", null, DB_VERSION) {
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override fun onCreate(database: SQLiteDatabase) {
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Log.debug("[GameDatabase] GameDatabase - Creating database...")
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execSqlAndLog(database, SQL_CREATE_GAMES)
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execSqlAndLog(database, SQL_CREATE_FOLDERS)
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}
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override fun onDowngrade(database: SQLiteDatabase, oldVersion: Int, newVersion: Int) {
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Log.verbose("[GameDatabase] Downgrades not supporting, clearing databases..")
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execSqlAndLog(database, SQL_DELETE_FOLDERS)
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execSqlAndLog(database, SQL_CREATE_FOLDERS)
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execSqlAndLog(database, SQL_DELETE_GAMES)
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execSqlAndLog(database, SQL_CREATE_GAMES)
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}
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override fun onUpgrade(database: SQLiteDatabase, oldVersion: Int, newVersion: Int) {
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Log.info(
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"[GameDatabase] Upgrading database from schema version $oldVersion to $newVersion"
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)
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// Delete all the games
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execSqlAndLog(database, SQL_DELETE_GAMES)
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execSqlAndLog(database, SQL_CREATE_GAMES)
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}
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fun resetDatabase(database: SQLiteDatabase) {
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execSqlAndLog(database, SQL_DELETE_FOLDERS)
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execSqlAndLog(database, SQL_CREATE_FOLDERS)
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execSqlAndLog(database, SQL_DELETE_GAMES)
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execSqlAndLog(database, SQL_CREATE_GAMES)
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}
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fun scanLibrary(database: SQLiteDatabase) {
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// Before scanning known folders, go through the game table and remove any entries for which the file itself is missing.
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val fileCursor = database.query(
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TABLE_NAME_GAMES,
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null, // Get all columns.
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null, // Get all rows.
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null,
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null, // No grouping.
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null,
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null
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) // Order of games is irrelevant.
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// Possibly overly defensive, but ensures that moveToNext() does not skip a row.
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fileCursor.moveToPosition(-1)
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while (fileCursor.moveToNext()) {
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val gamePath = fileCursor.getString(GAME_COLUMN_PATH)
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val game = File(gamePath)
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if (!game.exists()) {
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database.delete(
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TABLE_NAME_GAMES,
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"$KEY_DB_ID = ?",
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arrayOf(fileCursor.getLong(COLUMN_DB_ID).toString())
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)
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}
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}
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// Get a cursor listing all the folders the user has added to the library.
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val folderCursor = database.query(
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TABLE_NAME_FOLDERS,
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null, // Get all columns.
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null, // Get all rows.
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null,
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null, // No grouping.
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null,
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null
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) // Order of folders is irrelevant.
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// Possibly overly defensive, but ensures that moveToNext() does not skip a row.
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folderCursor.moveToPosition(-1)
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// Iterate through all results of the DB query (i.e. all folders in the library.)
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while (folderCursor.moveToNext()) {
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val folderPath = folderCursor.getString(FOLDER_COLUMN_PATH)
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val folderUri = Uri.parse(folderPath)
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// If the folder is empty because it no longer exists, remove it from the library.
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if (FileUtil.listFiles(context, folderUri).isEmpty()) {
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Log.error(
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"[GameDatabase] Folder no longer exists. Removing from the library: $folderPath"
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)
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database.delete(
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TABLE_NAME_FOLDERS,
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"$KEY_DB_ID = ?",
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arrayOf(folderCursor.getLong(COLUMN_DB_ID).toString())
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)
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}
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addGamesRecursive(database, folderUri, Game.extensions, 3)
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}
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fileCursor.close()
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folderCursor.close()
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database.close()
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}
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private fun addGamesRecursive(
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database: SQLiteDatabase,
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parent: Uri,
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allowedExtensions: Set<String>,
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depth: Int
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) {
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if (depth <= 0)
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return
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// Ensure keys are loaded so that ROM metadata can be decrypted.
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NativeLibrary.ReloadKeys()
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val children = FileUtil.listFiles(context, parent)
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for (file in children) {
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if (file.isDirectory) {
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addGamesRecursive(database, file.uri, Game.extensions, depth - 1)
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} else {
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val filename = file.uri.toString()
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val extensionStart = filename.lastIndexOf('.')
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if (extensionStart > 0) {
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val fileExtension = filename.substring(extensionStart)
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// Check that the file has an extension we care about before trying to read out of it.
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if (allowedExtensions.contains(fileExtension.lowercase(Locale.getDefault()))) {
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attemptToAddGame(database, filename)
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}
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}
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}
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}
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}
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// Pass the result cursor to the consumer.
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// Tell the consumer we're done; it will unsubscribe implicitly.
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val games: Observable<Cursor?>
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get() = Observable.create { subscriber: Subscriber<in Cursor?> ->
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Log.info("[GameDatabase] Reading games list...")
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val database = readableDatabase
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val resultCursor = database.query(
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TABLE_NAME_GAMES,
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null,
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null,
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null,
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null,
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null,
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"$KEY_GAME_TITLE ASC"
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)
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// Pass the result cursor to the consumer.
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subscriber.onNext(resultCursor)
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// Tell the consumer we're done; it will unsubscribe implicitly.
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subscriber.onCompleted()
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}
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private fun execSqlAndLog(database: SQLiteDatabase, sql: String) {
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Log.verbose("[GameDatabase] Executing SQL: $sql")
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database.execSQL(sql)
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}
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companion object {
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const val COLUMN_DB_ID = 0
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const val GAME_COLUMN_PATH = 1
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const val GAME_COLUMN_TITLE = 2
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const val GAME_COLUMN_DESCRIPTION = 3
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const val GAME_COLUMN_REGIONS = 4
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const val GAME_COLUMN_GAME_ID = 5
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const val GAME_COLUMN_CAPTION = 6
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const val FOLDER_COLUMN_PATH = 1
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const val KEY_DB_ID = "_id"
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const val KEY_GAME_PATH = "path"
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const val KEY_GAME_TITLE = "title"
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const val KEY_GAME_DESCRIPTION = "description"
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const val KEY_GAME_REGIONS = "regions"
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const val KEY_GAME_ID = "game_id"
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const val KEY_GAME_COMPANY = "company"
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const val KEY_FOLDER_PATH = "path"
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const val TABLE_NAME_FOLDERS = "folders"
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const val TABLE_NAME_GAMES = "games"
|
||||
private const val DB_VERSION = 2
|
||||
private const val TYPE_PRIMARY = " INTEGER PRIMARY KEY"
|
||||
private const val TYPE_INTEGER = " INTEGER"
|
||||
private const val TYPE_STRING = " TEXT"
|
||||
private const val CONSTRAINT_UNIQUE = " UNIQUE"
|
||||
private const val SEPARATOR = ", "
|
||||
private const val SQL_CREATE_GAMES = ("CREATE TABLE " + TABLE_NAME_GAMES + "("
|
||||
+ KEY_DB_ID + TYPE_PRIMARY + SEPARATOR
|
||||
+ KEY_GAME_PATH + TYPE_STRING + SEPARATOR
|
||||
+ KEY_GAME_TITLE + TYPE_STRING + SEPARATOR
|
||||
+ KEY_GAME_DESCRIPTION + TYPE_STRING + SEPARATOR
|
||||
+ KEY_GAME_REGIONS + TYPE_STRING + SEPARATOR
|
||||
+ KEY_GAME_ID + TYPE_STRING + SEPARATOR
|
||||
+ KEY_GAME_COMPANY + TYPE_STRING + ")")
|
||||
private const val SQL_CREATE_FOLDERS = ("CREATE TABLE " + TABLE_NAME_FOLDERS + "("
|
||||
+ KEY_DB_ID + TYPE_PRIMARY + SEPARATOR
|
||||
+ KEY_FOLDER_PATH + TYPE_STRING + CONSTRAINT_UNIQUE + ")")
|
||||
private const val SQL_DELETE_FOLDERS = "DROP TABLE IF EXISTS $TABLE_NAME_FOLDERS"
|
||||
private const val SQL_DELETE_GAMES = "DROP TABLE IF EXISTS $TABLE_NAME_GAMES"
|
||||
private fun attemptToAddGame(database: SQLiteDatabase, filePath: String) {
|
||||
var name = NativeLibrary.GetTitle(filePath)
|
||||
|
||||
// If the game's title field is empty, use the filename.
|
||||
if (name.isEmpty()) {
|
||||
name = filePath.substring(filePath.lastIndexOf("/") + 1)
|
||||
}
|
||||
var gameId = NativeLibrary.GetGameId(filePath)
|
||||
|
||||
// If the game's ID field is empty, use the filename without extension.
|
||||
if (gameId.isEmpty()) {
|
||||
gameId = filePath.substring(
|
||||
filePath.lastIndexOf("/") + 1,
|
||||
filePath.lastIndexOf(".")
|
||||
)
|
||||
}
|
||||
val game = Game.asContentValues(
|
||||
name,
|
||||
NativeLibrary.GetDescription(filePath).replace("\n", " "),
|
||||
NativeLibrary.GetRegions(filePath),
|
||||
filePath,
|
||||
gameId,
|
||||
NativeLibrary.GetCompany(filePath)
|
||||
)
|
||||
|
||||
// Try to update an existing game first.
|
||||
val rowsMatched = database.update(
|
||||
TABLE_NAME_GAMES, // Which table to update.
|
||||
game, // The values to fill the row with.
|
||||
"$KEY_GAME_ID = ?", arrayOf(
|
||||
game.getAsString(
|
||||
KEY_GAME_ID
|
||||
)
|
||||
)
|
||||
)
|
||||
// The ? in WHERE clause is replaced with this,
|
||||
// which is provided as an array because there
|
||||
// could potentially be more than one argument.
|
||||
|
||||
// If update fails, insert a new game instead.
|
||||
if (rowsMatched == 0) {
|
||||
Log.verbose("[GameDatabase] Adding game: " + game.getAsString(KEY_GAME_TITLE))
|
||||
database.insert(TABLE_NAME_GAMES, null, game)
|
||||
} else {
|
||||
Log.verbose("[GameDatabase] Updated game: " + game.getAsString(KEY_GAME_TITLE))
|
||||
}
|
||||
}
|
||||
}
|
||||
}
|
||||
Reference in New Issue
Block a user