Clover coverage report - Ant Coverage
Coverage timestamp: Tue Apr 8 2003 20:43:55 EST
file stats: LOC: 150   Methods: 4
NCLOC: 43   Classes: 1
 
 Source file Conditionals Statements Methods TOTAL
ExpandProperties.java 87.5% 95% 100% 93.8%
 1   
 /*
 2   
  * The Apache Software License, Version 1.1
 3   
  *
 4   
  * Copyright (c) 2002 The Apache Software Foundation.  All rights
 5   
  * reserved.
 6   
  *
 7   
  * Redistribution and use in source and binary forms, with or without
 8   
  * modification, are permitted provided that the following conditions
 9   
  * are met:
 10   
  *
 11   
  * 1. Redistributions of source code must retain the above copyright
 12   
  *    notice, this list of conditions and the following disclaimer.
 13   
  *
 14   
  * 2. Redistributions in binary form must reproduce the above copyright
 15   
  *    notice, this list of conditions and the following disclaimer in
 16   
  *    the documentation and/or other materials provided with the
 17   
  *    distribution.
 18   
  *
 19   
  * 3. The end-user documentation included with the redistribution, if
 20   
  *    any, must include the following acknowlegement:
 21   
  *       "This product includes software developed by the
 22   
  *        Apache Software Foundation (http://www.apache.org/)."
 23   
  *    Alternately, this acknowlegement may appear in the software itself,
 24   
  *    if and wherever such third-party acknowlegements normally appear.
 25   
  *
 26   
  * 4. The names "Ant" and "Apache Software
 27   
  *    Foundation" must not be used to endorse or promote products derived
 28   
  *    from this software without prior written permission. For written
 29   
  *    permission, please contact apache@apache.org.
 30   
  *
 31   
  * 5. Products derived from this software may not be called "Apache"
 32   
  *    nor may "Apache" appear in their names without prior written
 33   
  *    permission of the Apache Group.
 34   
  *
 35   
  * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESSED OR IMPLIED
 36   
  * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
 37   
  * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
 38   
  * DISCLAIMED.  IN NO EVENT SHALL THE APACHE SOFTWARE FOUNDATION OR
 39   
  * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
 40   
  * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
 41   
  * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
 42   
  * USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
 43   
  * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
 44   
  * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
 45   
  * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
 46   
  * SUCH DAMAGE.
 47   
  * ====================================================================
 48   
  *
 49   
  * This software consists of voluntary contributions made by many
 50   
  * individuals on behalf of the Apache Software Foundation.  For more
 51   
  * information on the Apache Software Foundation, please see
 52   
  * <http://www.apache.org/>.
 53   
  */
 54   
 package org.apache.tools.ant.filters;
 55   
 
 56   
 import java.io.IOException;
 57   
 import java.io.Reader;
 58   
 import org.apache.tools.ant.Project;
 59   
 
 60   
 /**
 61   
  * Expands Ant properties, if any, in the data.
 62   
  * <p>
 63   
  * Example:<br>
 64   
  * <pre>&lt;expandproperties/&gt;</pre>
 65   
  * Or:
 66   
  * <pre>&lt;filterreader classname=&quot;org.apache.tools.ant.filters.ExpandProperties&quot;/&gt;</pre>
 67   
  * 
 68   
  * @author Magesh Umasankar
 69   
  */
 70   
 public final class ExpandProperties
 71   
     extends BaseFilterReader
 72   
     implements ChainableReader {
 73   
     /** Data that must be read from, if not null. */
 74   
     private String queuedData = null;
 75   
 
 76   
     /**
 77   
      * Constructor for "dummy" instances.
 78   
      * 
 79   
      * @see BaseFilterReader#BaseFilterReader()
 80   
      */
 81  2
     public ExpandProperties() {
 82  2
         super();
 83   
     }
 84   
 
 85   
     /**
 86   
      * Creates a new filtered reader.
 87   
      *
 88   
      * @param in A Reader object providing the underlying stream.
 89   
      *           Must not be <code>null</code>.
 90   
      */
 91  2
     public ExpandProperties(final Reader in) {
 92  2
         super(in);
 93   
     }
 94   
 
 95   
     /**
 96   
      * Returns the next character in the filtered stream. The original
 97   
      * stream is first read in fully, and the Ant properties are expanded.
 98   
      * The results of this expansion are then queued so they can be read
 99   
      * character-by-character.
 100   
      * 
 101   
      * @return the next character in the resulting stream, or -1
 102   
      * if the end of the resulting stream has been reached
 103   
      * 
 104   
      * @exception IOException if the underlying stream throws an IOException
 105   
      * during reading     
 106   
      */
 107  147
     public final int read() throws IOException {
 108   
 
 109  147
         int ch = -1;
 110   
 
 111  147
         if (queuedData != null && queuedData.length() == 0) {
 112  0
             queuedData = null;
 113   
         }
 114   
 
 115  147
         if (queuedData != null) {
 116  142
             ch = queuedData.charAt(0);
 117  142
             queuedData = queuedData.substring(1);
 118  142
             if (queuedData.length() == 0) {
 119  2
                 queuedData = null;
 120   
             }
 121   
         } else {
 122  5
             queuedData = readFully();
 123  5
             if (queuedData == null) {
 124  3
                 ch = -1;
 125   
             } else {
 126  2
                 Project project = getProject();
 127  2
                 queuedData = project.replaceProperties(queuedData);
 128  2
                 return read();
 129   
             }
 130   
         }
 131  145
         return ch;
 132   
     }
 133   
 
 134   
     /**
 135   
      * Creates a new ExpandProperties filter using the passed in
 136   
      * Reader for instantiation.
 137   
      * 
 138   
      * @param rdr A Reader object providing the underlying stream.
 139   
      *            Must not be <code>null</code>.
 140   
      * 
 141   
      * @return a new filter based on this configuration, but filtering
 142   
      *         the specified reader
 143   
      */
 144  2
     public final Reader chain(final Reader rdr) {
 145  2
         ExpandProperties newFilter = new ExpandProperties(rdr);
 146  2
         newFilter.setProject(getProject());
 147  2
         return newFilter;
 148   
     }
 149   
 }
 150