| /* |
| * Licensed to the Apache Software Foundation (ASF) under one or more |
| * contributor license agreements. See the NOTICE file distributed with |
| * this work for additional information regarding copyright ownership. |
| * The ASF licenses this file to You under the Apache License, Version 2.0 |
| * (the "License"); you may not use this file except in compliance with |
| * the License. You may obtain a copy of the License at |
| * |
| * https://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, software |
| * distributed under the License is distributed on an "AS IS" BASIS, |
| * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| * See the License for the specific language governing permissions and |
| * limitations under the License. |
| * |
| */ |
| package org.apache.tools.ant.taskdefs.optional.extension; |
| |
| import java.io.File; |
| import java.util.List; |
| import java.util.Vector; |
| import java.util.stream.Stream; |
| |
| import org.apache.tools.ant.BuildException; |
| import org.apache.tools.ant.Project; |
| import org.apache.tools.ant.Task; |
| |
| /** |
| * Checks whether an extension is present in a fileset or an extensionSet. |
| * |
| * @ant.task name="jarlib-available" |
| */ |
| public class JarLibAvailableTask extends Task { |
| /** |
| * The library to display information about. |
| */ |
| private File libraryFile; |
| |
| /** |
| * Filesets specifying all the libraries |
| * to display information about. |
| */ |
| private final List<ExtensionSet> extensionFileSets = new Vector<>(); |
| |
| /** |
| * The name of the property to set if extension is available. |
| */ |
| private String propertyName; |
| |
| /** |
| * The extension that is required. |
| */ |
| private ExtensionAdapter requiredExtension; |
| |
| /** |
| * 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) { |
| this.propertyName = property; |
| } |
| |
| /** |
| * The JAR library to check. |
| * |
| * @param file The jar library to check. |
| */ |
| public void setFile(final File file) { |
| this.libraryFile = file; |
| } |
| |
| /** |
| * Set the Extension looking for. |
| * |
| * @param extension Set the Extension looking for. |
| */ |
| public void addConfiguredExtension(final ExtensionAdapter extension) { |
| if (null != requiredExtension) { |
| throw new BuildException( |
| "Can not specify extension to search for multiple times."); |
| } |
| requiredExtension = extension; |
| } |
| |
| /** |
| * Adds a set of extensions to search in. |
| * |
| * @param extensionSet a set of extensions to search in. |
| */ |
| public void addConfiguredExtensionSet(final ExtensionSet extensionSet) { |
| extensionFileSets.add(extensionSet); |
| } |
| |
| /** |
| * Execute the task. |
| * |
| * @throws BuildException if something goes wrong. |
| */ |
| @Override |
| public void execute() throws BuildException { |
| validate(); |
| |
| final Project prj = getProject(); |
| final Stream<Extension> extensions; |
| |
| // Check if list of files to check has been specified |
| if (!extensionFileSets.isEmpty()) { |
| extensions = extensionFileSets.stream() |
| .map(xset -> xset.toExtensions(prj)).flatMap(Stream::of); |
| } else { |
| extensions = Stream.of( |
| Extension.getAvailable(ExtensionUtil.getManifest(libraryFile))); |
| } |
| final Extension test = requiredExtension.toExtension(); |
| if (extensions.anyMatch(x -> x.isCompatibleWith(test))) { |
| prj.setNewProperty(propertyName, "true"); |
| } |
| } |
| |
| /** |
| * Validate the tasks parameters. |
| * |
| * @throws BuildException if invalid parameters found |
| */ |
| private void validate() throws BuildException { |
| if (null == requiredExtension) { |
| throw new BuildException("Extension element must be specified."); |
| } |
| if (null == libraryFile) { |
| if (extensionFileSets.isEmpty()) { |
| throw new BuildException("File attribute not specified."); |
| } |
| } else if (!libraryFile.exists()) { |
| throw new BuildException("File '%s' does not exist.", libraryFile); |
| } else if (!libraryFile.isFile()) { |
| throw new BuildException("'%s' is not a file.", libraryFile); |
| } |
| } |
| } |