/*
* Copyright (C) 2016 Álinson Santos Xavier <isoron@gmail.com>
*
* This file is part of Loop Habit Tracker.
*
* Loop Habit Tracker 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.
*
* Loop Habit Tracker 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 <http://www.gnu.org/licenses/>.
*/
package org.isoron.uhabits.io;
import android.support.annotation.*;
import org.isoron.uhabits.models.*;
import java.io.*;
import java.util.*;
/**
* AbstractImporter is the base class for all classes that import data from
* files into the app.
*/
public abstract class AbstractImporter
{
protected final HabitList habits;
public AbstractImporter(HabitList habits)
{
this.habits = habits;
}
public abstract boolean canHandle(@NonNull File file) throws IOException;
public abstract void importHabitsFromFile(@NonNull File file) throws IOException;
public static boolean isSQLite3File(@NonNull File file) throws IOException
{
FileInputStream fis = new FileInputStream(file);
byte[] sqliteHeader = "SQLite format 3".getBytes();
byte[] buffer = new byte[sqliteHeader.length];
int count = fis.read(buffer);
if(count < sqliteHeader.length) return false;
return Arrays.equals(buffer, sqliteHeader);
}
}