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.io.BufferedReader;
  13 import java.io.DataInputStream;
  14 import java.io.File;
  15 import java.io.FileInputStream;
  16 import java.io.FileNotFoundException;
  17 import java.io.IOException;
  18 import java.io.InputStreamReader;
  19 import java.util.ArrayList;
  20
  21 /**
  22  * Convenience object for reading from file
  23  *
  24  *
  25  *
  26  */
  27 public class ReadFromFile {
  28     private FileInputStream fileStream;
  29     private File filePointer;
  30
  31     public ReadFromFile(String fileName) throws FileNotFoundException {
  32         fileStream = new FileInputStream(fileName);
  33         filePointer = new File(fileName); //needed to allow file deletion
  34     }
  35
  36     public ArrayList<String> readFile() throws IOException {
  37         DataInputStream dataInput = new DataInputStream(this.fileStream);
  38         BufferedReader bufferedReader = new BufferedReader(new InputStreamReader(dataInput));
  39
  40         ArrayList<String> lineList = new ArrayList<String>();
  41         String line;
  42         while ((line = bufferedReader.readLine()) != null) {
  43             lineList.add(line);
  44         }
  45         bufferedReader.close();
  46         dataInput.close();
  47         fileStream.close();
  48         return lineList;
  49     }
  50
  51     public boolean delete() {
  52         if (filePointer == null) {
  53             return true;
  54         }
  55         return filePointer.delete();
  56     }
  57 }