[14982] | 1 | /*
|
---|
| 2 | * The Apache Software License, Version 1.1
|
---|
| 3 | *
|
---|
| 4 | * Copyright (c) 2001-2002 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 "The Jakarta Project", "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 [email protected].
|
---|
| 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 ise.antelope.tasks;
|
---|
| 55 |
|
---|
| 56 | import java.util.Vector;
|
---|
| 57 | import java.util.Enumeration;
|
---|
| 58 |
|
---|
| 59 | import org.apache.tools.ant.Task;
|
---|
| 60 | import org.apache.tools.ant.TaskContainer;
|
---|
| 61 | import org.apache.tools.ant.BuildException;
|
---|
| 62 |
|
---|
| 63 | /**
|
---|
| 64 | * This task emulates a Java switch.
|
---|
| 65 | * @author Dale Anson
|
---|
| 66 | */
|
---|
| 67 | public class SwitchTask extends Task {
|
---|
| 68 |
|
---|
| 69 | private Vector cases = new Vector();
|
---|
| 70 | private Case defaultCase = null;
|
---|
| 71 | private String name = null;
|
---|
| 72 |
|
---|
| 73 | /**
|
---|
| 74 | * Register dependent tasks.
|
---|
| 75 | */
|
---|
| 76 | public void init() {
|
---|
| 77 | getProject().addTaskDefinition( "case", Case.class );
|
---|
| 78 | getProject().addTaskDefinition( "default", DefaultCase.class );
|
---|
| 79 | getProject().addTaskDefinition( "break", Break.class );
|
---|
| 80 | }
|
---|
| 81 |
|
---|
| 82 | /**
|
---|
| 83 | * Set the name of the property to switch on.
|
---|
| 84 | * @param name the name of the property to switch on.
|
---|
| 85 | */
|
---|
| 86 | public void setName( String name ) {
|
---|
| 87 | this.name = name;
|
---|
| 88 | }
|
---|
| 89 |
|
---|
| 90 | /**
|
---|
| 91 | * Adds a case to this switch. A switch can have any number of cases.
|
---|
| 92 | * @param c the case to add.
|
---|
| 93 | */
|
---|
| 94 | public void addCase( Case c ) {
|
---|
| 95 | cases.addElement( c );
|
---|
| 96 | }
|
---|
| 97 |
|
---|
| 98 | /**
|
---|
| 99 | * Adds a default case to this switch. Only one case may be added.
|
---|
| 100 | * @param c the default case.
|
---|
| 101 | */
|
---|
| 102 | public void addDefault( DefaultCase c ) {
|
---|
| 103 | if ( defaultCase == null ) {
|
---|
| 104 | defaultCase = c;
|
---|
| 105 | return ;
|
---|
| 106 | }
|
---|
| 107 | else
|
---|
| 108 | throw new BuildException( "<switch> can have only one <default>" );
|
---|
| 109 | }
|
---|
| 110 |
|
---|
| 111 | public void execute() throws BuildException {
|
---|
| 112 | if ( name == null )
|
---|
| 113 | throw new BuildException( "'name' attribute cannot be null." );
|
---|
| 114 | String value = getProject().getProperty( name );
|
---|
| 115 | if ( value == null )
|
---|
| 116 | throw new BuildException( "Property " + name + " does not exist." );
|
---|
| 117 | boolean disregardValue = false; // should the case fall through to the next?
|
---|
| 118 | Enumeration en = cases.elements();
|
---|
| 119 | while ( en.hasMoreElements() ) {
|
---|
| 120 | Case c = ( Case ) en.nextElement();
|
---|
| 121 | if ( disregardValue ) {
|
---|
| 122 | c.perform();
|
---|
| 123 | if ( c.doBreak() )
|
---|
| 124 | return ;
|
---|
| 125 | }
|
---|
| 126 | else if ( value.equals( c.getValue() ) ) {
|
---|
| 127 | c.perform();
|
---|
| 128 | if ( c.doBreak() )
|
---|
| 129 | return ;
|
---|
| 130 | else
|
---|
| 131 | disregardValue = true;
|
---|
| 132 | }
|
---|
| 133 | }
|
---|
| 134 | // if here, then do the default case
|
---|
| 135 | if ( defaultCase != null ) {
|
---|
| 136 | defaultCase.perform();
|
---|
| 137 | }
|
---|
| 138 | }
|
---|
| 139 | }
|
---|