Coverage Report - org.mule.util.ChainedReader
 
Classes in this File Line Coverage Branch Coverage Complexity
ChainedReader
0%
0/31
0%
0/12
3.4
 
 1  
 /*
 2  
  * $Id: ChainedReader.java 8077 2007-08-27 20:15:25Z aperepel $
 3  
  * --------------------------------------------------------------------------------------
 4  
  * Copyright (c) MuleSource, Inc.  All rights reserved.  http://www.mulesource.com
 5  
  *
 6  
  * The software in this package is published under the terms of the CPAL v1.0
 7  
  * license, a copy of which has been included with this distribution in the
 8  
  * LICENSE.txt file.
 9  
  */
 10  
 
 11  
 package org.mule.util;
 12  
 
 13  
 import java.io.IOException;
 14  
 import java.io.Reader;
 15  
 
 16  
 /**
 17  
  * <code>ChainedReader</code> allows Reader objects to be chained together. Useful
 18  
  * for concatenating data from multiple Reader objects.
 19  
  */
 20  
 public class ChainedReader extends Reader
 21  
 {
 22  
     private final Reader first;
 23  
     private final Reader second;
 24  0
     private boolean firstRead = false;
 25  
 
 26  
     public ChainedReader(Reader first, Reader second)
 27  0
     {
 28  0
         this.first = first;
 29  0
         this.second = second;
 30  0
     }
 31  
 
 32  
     public void close() throws IOException
 33  
     {
 34  0
         first.close();
 35  0
         second.close();
 36  0
     }
 37  
 
 38  
     public int read(char[] cbuf, int off, int len) throws IOException
 39  
     {
 40  0
         if (!firstRead)
 41  
         {
 42  0
             int i = first.read(cbuf, off, len);
 43  0
             if (i < len)
 44  
             {
 45  0
                 firstRead = true;
 46  0
                 int x = second.read(cbuf, i, len - i);
 47  0
                 return x + i;
 48  
             }
 49  
             else
 50  
             {
 51  0
                 return i;
 52  
             }
 53  
         }
 54  
         else
 55  
         {
 56  0
             return second.read(cbuf, off, len);
 57  
         }
 58  
     }
 59  
 
 60  
     public int read() throws IOException
 61  
     {
 62  0
         if (!firstRead)
 63  
         {
 64  0
             int i = first.read();
 65  0
             if (i == -1)
 66  
             {
 67  0
                 firstRead = true;
 68  0
                 return second.read();
 69  
             }
 70  
             else
 71  
             {
 72  0
                 return i;
 73  
             }
 74  
         }
 75  
         else
 76  
         {
 77  0
             return second.read();
 78  
         }
 79  
     }
 80  
 
 81  
     public int read(char[] cbuf) throws IOException
 82  
     {
 83  0
         if (!firstRead)
 84  
         {
 85  0
             int i = first.read(cbuf);
 86  0
             if (i < cbuf.length)
 87  
             {
 88  0
                 firstRead = true;
 89  0
                 int x = second.read(cbuf, i, cbuf.length - i);
 90  0
                 return x + i;
 91  
             }
 92  
             else
 93  
             {
 94  0
                 return i;
 95  
             }
 96  
         }
 97  
         else
 98  
         {
 99  0
             return second.read(cbuf);
 100  
         }
 101  
     }
 102  
 
 103  
 }