opendaylight/sal/api/src/main/java/org/opendaylight/controller/sal/utils/ReadFromFile.java

   1
   2 /*
   3  * Copyright (c) 2013 Cisco Systems, Inc. and others.  All rights reserved.
   4  *
   5  * This program and the accompanying materials are made available under the
   6  * terms of the Eclipse Public License v1.0 which accompanies this distribution,
   7  * and is available at http://www.eclipse.org/legal/epl-v10.html
   8  */
   9
  10 package org.opendaylight.controller.sal.utils;
  11
  12 import java.util.ArrayList;
  13 import java.io.*;
  14
  15 /**
  16  * Convenience object for reading from file
  17  *
  18  *
  19  *
  20  */
  21 public class ReadFromFile {
  22     private FileInputStream fileStream;
  23     private File filePointer;
  24
  25     public ReadFromFile(String fileName) throws FileNotFoundException {
  26         fileStream = new FileInputStream(fileName);
  27         filePointer = new File(fileName); //needed to allow file deletion
  28     }
  29
  30     public ArrayList<String> readFile() throws IOException {
  31         DataInputStream dataInput = new DataInputStream(this.fileStream);
  32         BufferedReader bufferedReader = new BufferedReader(new InputStreamReader(dataInput));
  33
  34         ArrayList<String> lineList = new ArrayList<String>();
  35         String line;
  36         while ((line = bufferedReader.readLine()) != null) {
  37             lineList.add(line);
  38         }
  39         bufferedReader.close();
  40         dataInput.close();
  41         fileStream.close();
  42         return lineList;
  43     }
  44
  45     public boolean delete() {
  46         if (filePointer == null) {
  47             return true;
  48         }
  49         return filePointer.delete();
  50     }
  51 }