001    /*
002     * The Apache Software License, Version 1.1
003     *
004     * Copyright (C) 2006 Mark Doliner
005     * Copyright (C) 2006 John Lewis
006     *
007     * Redistribution and use in source and binary forms, with or without
008     * modification, are permitted provided that the following conditions
009     * are met:
010     *
011     * 1. Redistributions of source code must retain the above copyright
012     *    notice, this list of conditions and the following disclaimer.
013     *
014     * 2. Redistributions in binary form must reproduce the above copyright
015     *    notice, this list of conditions and the following disclaimer in
016     *    the documentation and/or other materials provided with the
017     *    distribution.
018     *
019     * 3. The end-user documentation included with the redistribution, if
020     *    any, must include the following acknowlegement:
021     *       "This product includes software developed by the
022     *        Apache Software Foundation (http://www.apache.org/)."
023     *    Alternately, this acknowlegement may appear in the software itself,
024     *    if and wherever such third-party acknowlegements normally appear.
025     *
026     * 4. The names "Ant" and "Apache Software
027     *    Foundation" must not be used to endorse or promote products derived
028     *    from this software without prior written permission. For written
029     *    permission, please contact apache@apache.org.
030     *
031     * 5. Products derived from this software may not be called "Apache"
032     *    nor may "Apache" appear in their names without prior written
033     *    permission of the Apache Group.
034     *
035     * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESSED OR IMPLIED
036     * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
037     * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
038     * DISCLAIMED.  IN NO EVENT SHALL THE APACHE SOFTWARE FOUNDATION OR
039     * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
040     * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
041     * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
042     * USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
043     * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
044     * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
045     * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
046     * SUCH DAMAGE.
047     * ====================================================================
048     *
049     * This software consists of voluntary contributions made by many
050     * individuals on behalf of the Apache Software Foundation.  For more
051     * information on the Apache Software Foundation, please see
052     * <http://www.apache.org/>.
053     */
054    
055    package net.sourceforge.cobertura.ant;
056    
057    import org.apache.tools.ant.taskdefs.Java;
058    import org.apache.tools.ant.types.Environment.Variable;
059    
060    abstract class AntUtil
061    {
062    
063            /**
064             * Used to transfer the net.sourceforge.cobertura.datafile property to a JVM
065             * that is about to be forked.
066             * 
067             * This is confusing, but it's required by our functional test.
068             * What happens is, we have a JUnit test that runs ant to
069             * instrument some classes.  When the instrumentation is running,
070             * we want to get the coverage info that is created by exercising
071             * our instrumentation classes.
072             *
073             * So we pass in two different coverage files:
074             * 1. The coverage data file command line parameter.  This tells
075             *    the instrument task where to write the new coverage data.
076             * 2. The coverage data system property.  This tells the
077             *    instrumentation inside the instrumented classes where to
078             *    keep track of the line hit counts, etc.
079             *
080             * @param task The Java task that will do the forking.
081             */
082            static void transferCoberturaDataFileProperty(Java task)
083            {
084                    String coberturaProperty = System.getProperty("net.sourceforge.cobertura.datafile");
085                    if (coberturaProperty != null)
086                    {
087                            Variable sysproperty = new Variable();
088                            sysproperty.setKey("net.sourceforge.cobertura.datafile");
089                            sysproperty.setValue(coberturaProperty);
090                            task.addSysproperty(sysproperty);
091                    }
092            }
093    
094    }