| /* |
| * The Apache Software License, Version 1.1 |
| * |
| * Copyright (c) 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.taskdefs.optional.extension; |
| |
| import java.io.File; |
| import java.util.Iterator; |
| import java.util.Vector; |
| import java.util.jar.Manifest; |
| import org.apache.tools.ant.BuildException; |
| import org.apache.tools.ant.Task; |
| |
| /** |
| * Checks whether an extension is present in a fileset or an extensionSet. |
| * |
| * @author <a href="mailto:peter@apache.org">Peter Donald</a> |
| * @ant.task name="jarlib-available" |
| */ |
| public class JarLibAvailableTask |
| extends Task |
| { |
| /** |
| * The library to display information about. |
| */ |
| private File m_file; |
| |
| /** |
| * Filesets specifying all the librarys |
| * to display information about. |
| */ |
| private final Vector m_extensionSets = new Vector(); |
| |
| /** |
| * The name of the property to set if extension is available. |
| */ |
| private String m_property; |
| |
| /** |
| * The extension that is required. |
| */ |
| private ExtensionAdapter m_extension; |
| |
| /** |
| * The name of property to set if extensions are available. |
| * |
| * @param property The name of property to set if extensions is available. |
| */ |
| public void setProperty( final String property ) |
| { |
| m_property = property; |
| } |
| |
| /** |
| * The JAR library to check. |
| * |
| * @param file The jar library to check. |
| */ |
| public void setFile( final File file ) |
| { |
| m_file = file; |
| } |
| |
| /** |
| * Set the Extension looking for. |
| * |
| * @param extension Set the Extension looking for. |
| */ |
| public void addConfiguredExtension( final ExtensionAdapter extension ) |
| { |
| if( null != m_extension ) |
| { |
| final String message = "Can not specify extension to " + |
| "search for multiple times."; |
| throw new BuildException( message ); |
| } |
| m_extension = extension; |
| } |
| |
| /** |
| * Adds a set of extensions to search in. |
| * |
| * @param extensionSet a set of extensions to search in. |
| */ |
| public void addConfiguredExtensionSet( final ExtensionSet extensionSet ) |
| { |
| m_extensionSets.addElement( extensionSet ); |
| } |
| |
| public void execute() |
| throws BuildException |
| { |
| validate(); |
| |
| final Extension test = m_extension.toExtension(); |
| |
| // Check if list of files to check has been specified |
| if( !m_extensionSets.isEmpty() ) |
| { |
| final Iterator iterator = m_extensionSets.iterator(); |
| while( iterator.hasNext() ) |
| { |
| final ExtensionSet extensionSet = (ExtensionSet)iterator.next(); |
| final Extension[] extensions = |
| extensionSet.toExtensions( getProject() ); |
| for( int i = 0; i < extensions.length; i++ ) |
| { |
| final Extension extension = extensions[ i ]; |
| if( extension.isCompatibleWith( test ) ) |
| { |
| getProject().setNewProperty( m_property, "true" ); |
| } |
| } |
| } |
| } |
| else |
| { |
| final Manifest manifest = ExtensionUtil.getManifest( m_file ); |
| final Extension[] extensions = Extension.getAvailable( manifest ); |
| for( int i = 0; i < extensions.length; i++ ) |
| { |
| final Extension extension = extensions[ i ]; |
| if( extension.isCompatibleWith( test ) ) |
| { |
| getProject().setNewProperty( m_property, "true" ); |
| } |
| } |
| } |
| } |
| |
| /** |
| * Validate the tasks parameters. |
| * |
| * @throws BuildException if invalid parameters found |
| */ |
| private void validate() |
| throws BuildException |
| { |
| if( null == m_extension ) |
| { |
| final String message = "Extension element must be specified."; |
| throw new BuildException( message ); |
| } |
| |
| if( null == m_file && m_extensionSets.isEmpty() ) |
| { |
| final String message = "File attribute not specified."; |
| throw new BuildException( message ); |
| } |
| if( null != m_file && !m_file.exists() ) |
| { |
| final String message = "File '" + m_file + "' does not exist."; |
| throw new BuildException( message ); |
| } |
| if( null != m_file && !m_file.isFile() ) |
| { |
| final String message = "\'" + m_file + "\' is not a file."; |
| throw new BuildException( message ); |
| } |
| } |
| } |