Magic Cube

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// Copyright 2022 Leszek Koltunski                                                               //

//                                                                                               //

// This file is part of Magic Cube.                                                              //

//                                                                                               //

// Magic Cube is proprietary software licensed under an EULA which you should have received      //

// along with the code. If not, check https://distorted.org/magic/License-Magic-Cube.html        //

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package org.distorted.external;

import java.io.File;

import java.io.FileInputStream;

import java.io.FileNotFoundException;

import java.io.FileOutputStream;

import java.io.IOException;

import java.io.InputStream;

import java.io.OutputStream;

import java.util.Locale;

import android.content.Context;

import android.graphics.Bitmap;

import android.graphics.BitmapFactory;

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public class RubikFiles

  {

  private static RubikFiles mThis;

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  private RubikFiles()

    {

    }

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// PUBLIC API

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  public static RubikFiles getInstance()

    {

    if( mThis==null ) mThis = new RubikFiles();

    return mThis;

    }

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  public InputStream openFile(Context context, String name)

    {

    File file = new File(context.getFilesDir(), name);

    try

      {

      return new FileInputStream(file);

      }

    catch(FileNotFoundException ex)

      {

      android.util.Log.e("D", "file "+name+" not found: "+ex.getMessage());

      }

    return null;

    }

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  public Bitmap getIcon(Context context, String name)

    {

    File dir  = context.getFilesDir();

    File file = new File(dir, name);

    if( file.exists() )

      {

      String fname = dir.getAbsolutePath()+"/"+name;

      return BitmapFactory.decodeFile(fname);

      }

    return null;

    }

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  public boolean saveFile(Context context, InputStream stream, String name)

    {

    try

      {

      File file = new File(context.getFilesDir(), name);

      OutputStream outStream = new FileOutputStream(file);

      byte[] buffer = new byte[8*1024];

      int bytesRead;

      while ((bytesRead = stream.read(buffer)) != -1)

        {

        outStream.write(buffer, 0, bytesRead);

        }

      outStream.close();

      return true;

      }

    catch(IOException ioe)

      {

      android.util.Log.e("D", "Exception trying to save "+name+" : "+ioe.getMessage() );

      return false;

      }

    }

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  public boolean saveIcon(Context context, Bitmap bmp, String name)

    {

    try

      {

      File file = new File(context.getFilesDir(), name);

      OutputStream outStream = new FileOutputStream(file);

      bmp.compress(Bitmap.CompressFormat.PNG, 100, outStream);

      outStream.close();

      return true;

      }

    catch(Exception e)

      {

      android.util.Log.e("D", "Exception trying to save "+name+" : "+e.getMessage() );

      return false;

      }

    }

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  public void deleteIcon(Context context, String name)

    {

    String filename = name.toLowerCase(Locale.ENGLISH) + ".png";

    boolean success = context.deleteFile(filename);

    if( !success ) android.util.Log.e("D", "failed to delete "+filename);

    else android.util.Log.e("D", "successfully deleted "+filename);

    }

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  public void deleteJsonObject(Context context, String name)

    {

    String filename = name.toLowerCase(Locale.ENGLISH) + "_object.json";

    boolean success = context.deleteFile(filename);

    if( !success ) android.util.Log.e("D", "failed to delete "+filename);

    else android.util.Log.e("D", "successfully deleted "+filename);

    }

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  public void deleteJsonExtras(Context context, String name)

    {

    String filename = name.toLowerCase(Locale.ENGLISH) + "_extras.json";

    boolean success = context.deleteFile(filename);

    if( !success ) android.util.Log.e("D", "failed to delete "+filename);

    else android.util.Log.e("D", "successfully deleted "+filename);

    }

  }