src/com/ranfa/lib/io/FileIO.java

   1 package com.ranfa.lib.io;
   2
   3 import java.io.FileInputStream;
   4 import java.io.FileOutputStream;
   5 import java.io.IOException;
   6 import java.io.ObjectInputStream;
   7 import java.io.ObjectOutputStream;
   8 import java.text.SimpleDateFormat;
   9 import java.util.Date;
  10
  11 import org.slf4j.Logger;
  12 import org.slf4j.LoggerFactory;
  13
  14 public class FileIO {
  15
  16         private static Logger logger = LoggerFactory.getLogger(FileIO.class);
  17
  18         // constants
  19         private static final String FILE_NAME_PATTERN = "YYYY-MM-dd-HH-mm-ss";
  20         private static final String FILE_EXTENSION = ".drs";
  21
  22         // fields
  23         /**
  24          * songname
  25          * level
  26          * difficulty
  27          * attribute
  28          * score
  29          */
  30         private OutputDataStructure data;
  31
  32
  33         public FileIO(OutputDataStructure data) {
  34                 this.data = data;
  35         }
  36
  37         public void write() throws IOException {
  38                 StringBuilder builder = new StringBuilder(new SimpleDateFormat(FILE_NAME_PATTERN).format(new Date()));
  39                 builder.append(FILE_EXTENSION);
  40                         ObjectOutputStream outStream = new ObjectOutputStream(new FileOutputStream(builder.toString()));
  41                         outStream.writeObject(data);
  42                         outStream.close();
  43         }
  44
  45         public static OutputDataStructure read(String fileName) {
  46                 FileInputStream fileInputStream;
  47                 try {
  48                         fileInputStream = new FileInputStream(fileName);
  49                         ObjectInputStream objectInputStream = new ObjectInputStream(fileInputStream);
  50                 OutputDataStructure structure = (OutputDataStructure) objectInputStream.readObject();
  51                 objectInputStream.close();
  52                 return structure;
  53                 } catch (IOException | ClassNotFoundException e) {
  54                         logger.error("Exception while reading objects", e);
  55                         return null;
  56                 }
  57         }
  58
  59 }