| /* |
| * The Apache Software License, Version 1.1 |
| * |
| * Copyright (c) 2000-2002 The Apache Software Foundation. All rights |
| * reserved. |
| * |
| * Redistribution and use in source and binary forms, with or without |
| * modification, are permitted provided that the following conditions |
| * are met: |
| * |
| * 1. Redistributions of source code must retain the above copyright |
| * notice, this list of conditions and the following disclaimer. |
| * |
| * 2. Redistributions in binary form must reproduce the above copyright |
| * notice, this list of conditions and the following disclaimer in |
| * the documentation and/or other materials provided with the |
| * distribution. |
| * |
| * 3. The end-user documentation included with the redistribution, if |
| * any, must include the following acknowlegement: |
| * "This product includes software developed by the |
| * Apache Software Foundation (http://www.apache.org/)." |
| * Alternately, this acknowlegement may appear in the software itself, |
| * if and wherever such third-party acknowlegements normally appear. |
| * |
| * 4. The names "The Jakarta Project", "Ant", and "Apache Software |
| * Foundation" must not be used to endorse or promote products derived |
| * from this software without prior written permission. For written |
| * permission, please contact apache@apache.org. |
| * |
| * 5. Products derived from this software may not be called "Apache" |
| * nor may "Apache" appear in their names without prior written |
| * permission of the Apache Group. |
| * |
| * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESSED OR IMPLIED |
| * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES |
| * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE |
| * DISCLAIMED. IN NO EVENT SHALL THE APACHE SOFTWARE FOUNDATION OR |
| * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, |
| * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT |
| * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF |
| * USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND |
| * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, |
| * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT |
| * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF |
| * SUCH DAMAGE. |
| * ==================================================================== |
| * |
| * This software consists of voluntary contributions made by many |
| * individuals on behalf of the Apache Software Foundation. For more |
| * information on the Apache Software Foundation, please see |
| * <http://www.apache.org/>. |
| */ |
| |
| package org.apache.tools.ant; |
| |
| import java.util.Enumeration; |
| import java.util.Vector; |
| import java.util.StringTokenizer; |
| |
| /** |
| * Class to implement a target object with required parameters. |
| * |
| * @author James Davidson <a href="mailto:duncan@x180.com">duncan@x180.com</a> |
| */ |
| public class Target implements TaskContainer { |
| |
| /** Name of this target. */ |
| private String name; |
| /** The "if" condition to test on execution. */ |
| private String ifCondition = ""; |
| /** The "unless" condition to test on execution. */ |
| private String unlessCondition = ""; |
| /** List of targets this target is dependent on. */ |
| private Vector dependencies = new Vector(2); |
| /** Children of this target (tasks and data types). */ |
| private Vector children = new Vector(5); |
| /** Project this target belongs to. */ |
| private Project project; |
| /** Description of this target, if any. */ |
| private String description = null; |
| |
| /** Sole constructor. */ |
| public Target() { |
| } |
| |
| /** |
| * Sets the project this target belongs to. |
| * |
| * @param project The project this target belongs to. |
| * Must not be <code>null</code>. |
| */ |
| public void setProject(Project project) { |
| this.project = project; |
| } |
| |
| /** |
| * Returns the project this target belongs to. |
| * |
| * @return The project this target belongs to, or <code>null</code> if |
| * the project has not been set yet. |
| */ |
| public Project getProject() { |
| return project; |
| } |
| |
| /** |
| * Sets the list of targets this target is dependent on. |
| * The targets themselves are not resolved at this time. |
| * |
| * @param depS A comma-separated list of targets this target |
| * depends on. Must not be <code>null</code>. |
| */ |
| public void setDepends(String depS) { |
| if (depS.length() > 0) { |
| StringTokenizer tok = |
| new StringTokenizer(depS, ",", true); |
| while (tok.hasMoreTokens()) { |
| String token = tok.nextToken().trim(); |
| |
| // Make sure the dependency is not empty string |
| if (token.equals("") || token.equals(",")) { |
| throw new BuildException( "Syntax Error: Depend attribute " + |
| "for target \"" + getName() + |
| "\" has an empty string for dependency." ); |
| } |
| |
| addDependency(token); |
| |
| // Make sure that depends attribute does not |
| // end in a , |
| if (tok.hasMoreTokens()) { |
| token = tok.nextToken(); |
| if (!tok.hasMoreTokens() || !token.equals(",")) { |
| throw new BuildException( "Syntax Error: Depend attribute " + |
| "for target \"" + getName() + |
| "\" ends with a , character" ); |
| } |
| } |
| } |
| } |
| } |
| |
| /** |
| * Sets the name of this target. |
| * |
| * @param name The name of this target. Should not be <code>null</code>. |
| */ |
| public void setName(String name) { |
| this.name = name; |
| } |
| |
| /** |
| * Returns the name of this target. |
| * |
| * @return the name of this target, or <code>null</code> if the |
| * name has not been set yet. |
| */ |
| public String getName() { |
| return name; |
| } |
| |
| /** |
| * Adds a task to this target. |
| * |
| * @param task The task to be added. Must not be <code>null</code>. |
| */ |
| public void addTask(Task task) { |
| children.addElement(task); |
| } |
| |
| /** |
| * Adds the wrapper for a data type element to this target. |
| * |
| * @param r The wrapper for the data type element to be added. |
| * Must not be <code>null</code>. |
| */ |
| public void addDataType(RuntimeConfigurable r) { |
| children.addElement(r); |
| } |
| |
| /** |
| * Returns the current set of tasks to be executed by this target. |
| * |
| * @return an array of the tasks currently within this target |
| */ |
| public Task[] getTasks() { |
| Vector tasks = new Vector(children.size()); |
| Enumeration enum = children.elements(); |
| while (enum.hasMoreElements()) { |
| Object o = enum.nextElement(); |
| if (o instanceof Task) { |
| tasks.addElement(o); |
| } |
| } |
| |
| Task[] retval = new Task[tasks.size()]; |
| tasks.copyInto(retval); |
| return retval; |
| } |
| |
| /** |
| * Adds a dependency to this target. |
| * |
| * @param dependency The name of a target this target is dependent on. |
| * Must not be <code>null</code>. |
| */ |
| public void addDependency(String dependency) { |
| dependencies.addElement(dependency); |
| } |
| |
| /** |
| * Returns an enumeration of the dependencies of this target. |
| * |
| * @return an enumeration of the dependencies of this target |
| */ |
| public Enumeration getDependencies() { |
| return dependencies.elements(); |
| } |
| |
| /** |
| * Sets the "if" condition to test on execution. This is the |
| * name of a property to test for existence - if the property |
| * is not set, the task will not execute. The property goes |
| * through property substitution once before testing, so if |
| * property <code>foo</code> has value <code>bar</code>, setting |
| * the "if" condition to <code>${foo}_x</code> will mean that the |
| * task will only execute if property <code>bar_x</code> is set. |
| * |
| * @param property The property condition to test on execution. |
| * May be <code>null</code>, in which case |
| * no "if" test is performed. |
| */ |
| public void setIf(String property) { |
| this.ifCondition = (property == null) ? "" : property; |
| } |
| |
| /** |
| * Sets the "unless" condition to test on execution. This is the |
| * name of a property to test for existence - if the property |
| * is set, the task will not execute. The property goes |
| * through property substitution once before testing, so if |
| * property <code>foo</code> has value <code>bar</code>, setting |
| * the "unless" condition to <code>${foo}_x</code> will mean that the |
| * task will only execute if property <code>bar_x</code> isn't set. |
| * |
| * @param property The property condition to test on execution. |
| * May be <code>null</code>, in which case |
| * no "unless" test is performed. |
| */ |
| public void setUnless(String property) { |
| this.unlessCondition = (property == null) ? "" : property; |
| } |
| |
| /** |
| * Sets the description of this target. |
| * |
| * @param description The description for this target. |
| * May be <code>null</code>, indicating that no |
| * description is available. |
| */ |
| public void setDescription(String description) { |
| this.description = description; |
| } |
| |
| /** |
| * Returns the description of this target. |
| * |
| * @return the description of this target, or <code>null</code> if no |
| * description is available. |
| */ |
| public String getDescription() { |
| return description; |
| } |
| |
| /** |
| * Returns the name of this target. |
| * |
| * @return the name of this target, or <code>null</code> if the |
| * name has not been set yet. |
| */ |
| public String toString() { |
| return name; |
| } |
| |
| /** |
| * Executes the target if the "if" and "unless" conditions are |
| * satisfied. Dependency checking should be done before calling this |
| * method, as it does no checking of its own. If either the "if" |
| * or "unless" test prevents this target from being executed, a verbose |
| * message is logged giving the reason. It is recommended that clients |
| * of this class call performTasks rather than this method so that |
| * appropriate build events are fired. |
| * |
| * @exception BuildException if any of the tasks fail or if a data type |
| * configuration fails. |
| * |
| * @see #performTasks() |
| * @see #setIf(String) |
| * @see #setUnless(String) |
| */ |
| public void execute() throws BuildException { |
| if (testIfCondition() && testUnlessCondition()) { |
| Enumeration enum = children.elements(); |
| while (enum.hasMoreElements()) { |
| Object o = enum.nextElement(); |
| if (o instanceof Task) { |
| Task task = (Task) o; |
| task.perform(); |
| } else { |
| RuntimeConfigurable r = (RuntimeConfigurable) o; |
| r.maybeConfigure(project); |
| } |
| } |
| } else if (!testIfCondition()) { |
| project.log(this, "Skipped because property '" + this.ifCondition + "' not set.", |
| Project.MSG_VERBOSE); |
| } else { |
| project.log(this, "Skipped because property '" + this.unlessCondition + "' set.", |
| Project.MSG_VERBOSE); |
| } |
| } |
| |
| /** |
| * Performs the tasks within this target (if the conditions are met), |
| * firing target started/target finished messages around a call to |
| * execute. |
| * |
| * @see #execute() |
| */ |
| public final void performTasks() { |
| try { |
| project.fireTargetStarted(this); |
| execute(); |
| project.fireTargetFinished(this, null); |
| } |
| catch(RuntimeException exc) { |
| project.fireTargetFinished(this, exc); |
| throw exc; |
| } |
| } |
| |
| /** |
| * Replaces all occurrences of the given task in the list |
| * of children with the replacement data type wrapper. |
| * |
| * @param el The task to replace. |
| * Must not be <code>null</code>. |
| * @param o The data type wrapper to replace <code>el</code> with. |
| */ |
| void replaceChild(Task el, RuntimeConfigurable o) { |
| int index; |
| while ((index = children.indexOf(el)) >= 0) { |
| children.setElementAt(o, index); |
| } |
| } |
| |
| /** |
| * Replaces all occurrences of the given task in the list |
| * of children with the replacement task. |
| * |
| * @param el The task to replace. |
| * Must not be <code>null</code>. |
| * @param o The task to replace <code>el</code> with. |
| */ |
| void replaceChild(Task el, Task o) { |
| int index; |
| while ((index = children.indexOf(el)) >= 0) { |
| children.setElementAt(o, index); |
| } |
| } |
| |
| /** |
| * Tests whether or not the "if" condition is satisfied. |
| * |
| * @return whether or not the "if" condition is satisfied. If no |
| * condition (or an empty condition) has been set, |
| * <code>true</code> is returned. |
| * |
| * @see #setIf(String) |
| */ |
| private boolean testIfCondition() { |
| if ("".equals(ifCondition)) { |
| return true; |
| } |
| |
| String test = project.replaceProperties(ifCondition); |
| return project.getProperty(test) != null; |
| } |
| |
| /** |
| * Tests whether or not the "unless" condition is satisfied. |
| * |
| * @return whether or not the "unless" condition is satisfied. If no |
| * condition (or an empty condition) has been set, |
| * <code>true</code> is returned. |
| * |
| * @see #setUnless(String) |
| */ |
| private boolean testUnlessCondition() { |
| if ("".equals(unlessCondition)) { |
| return true; |
| } |
| String test = project.replaceProperties(unlessCondition); |
| return project.getProperty(test) == null; |
| } |
| } |