Clover coverage report - Ant Coverage
Coverage timestamp: Tue Apr 8 2003 20:43:55 EST
file stats: LOC: 138   Methods: 5
NCLOC: 50   Classes: 1
 
 Source file Conditionals Statements Methods TOTAL
RegexpMatcherFactory.java 50% 54.2% 100% 60.6%
 1   
 /*
 2   
  * The Apache Software License, Version 1.1
 3   
  *
 4   
  * Copyright (c) 2000-2003 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   
 
 55   
 package org.apache.tools.ant.util.regexp;
 56   
 
 57   
 import org.apache.tools.ant.BuildException;
 58   
 import org.apache.tools.ant.Project;
 59   
 
 60   
 /**
 61   
  * Simple Factory Class that produces an implementation of
 62   
  * RegexpMatcher based on the system property
 63   
  * <code>ant.regexp.matcherimpl</code> and the classes
 64   
  * available.
 65   
  * 
 66   
  * <p>In a more general framework this class would be abstract and
 67   
  * have a static newInstance method.</p>
 68   
  *
 69   
  * @author Stefan Bodewig 
 70   
  */
 71   
 public class RegexpMatcherFactory {
 72   
 
 73  2
     public RegexpMatcherFactory() {}
 74   
 
 75   
     /***
 76   
      * Create a new regular expression instance.
 77   
      */
 78  1
     public RegexpMatcher newRegexpMatcher() throws BuildException {
 79  1
         return newRegexpMatcher(null);
 80   
     }
 81   
 
 82   
     /***
 83   
      * Create a new regular expression instance.
 84   
      *
 85   
      * @param p Project whose ant.regexp.regexpimpl property will be used.
 86   
      */
 87  1
     public RegexpMatcher newRegexpMatcher(Project p)
 88   
         throws BuildException {
 89  1
         String systemDefault = null;
 90  1
         if (p == null) {
 91  1
             systemDefault = System.getProperty("ant.regexp.regexpimpl");
 92   
         } else {
 93  0
             systemDefault = p.getProperty("ant.regexp.regexpimpl");
 94   
         }
 95   
         
 96  1
         if (systemDefault != null) {
 97  0
             return createInstance(systemDefault);
 98   
             // XXX     should we silently catch possible exceptions and try to 
 99   
             //         load a different implementation?
 100   
         }
 101   
 
 102  1
         try {
 103  1
             testAvailability("java.util.regex.Matcher");
 104  1
             return createInstance("org.apache.tools.ant.util.regexp.Jdk14RegexpMatcher");
 105   
         } catch (BuildException be) {}
 106   
         
 107  0
         try {
 108  0
             testAvailability("org.apache.oro.text.regex.Pattern");
 109  0
             return createInstance("org.apache.tools.ant.util.regexp.JakartaOroMatcher");
 110   
         } catch (BuildException be) {}
 111   
         
 112  0
         try {
 113  0
             testAvailability("org.apache.regexp.RE");
 114  0
             return createInstance("org.apache.tools.ant.util.regexp.JakartaRegexpMatcher");
 115   
         } catch (BuildException be) {}
 116   
 
 117  0
         throw new BuildException("No supported regular expression matcher found");
 118   
    }
 119   
 
 120  4
     protected RegexpMatcher createInstance(String className) 
 121   
         throws BuildException {
 122  4
         try {
 123  4
             Class implClass = Class.forName(className);
 124  4
             return (RegexpMatcher) implClass.newInstance();
 125   
         } catch (Throwable t) {
 126  0
             throw new BuildException(t);
 127   
         }
 128   
     }
 129   
     
 130  4
     protected void testAvailability(String className) throws BuildException {
 131  4
         try {
 132  4
             Class implClass = Class.forName(className);
 133   
         } catch (Throwable t) {
 134  0
             throw new BuildException(t);
 135   
         }
 136   
     }
 137   
 }
 138