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Diffstat (limited to 'framework/src/ant/apache-ant-1.9.6/src/main/org/apache/tools/ant/taskdefs/optional/extension/JarLibDisplayTask.java')
-rw-r--r-- | framework/src/ant/apache-ant-1.9.6/src/main/org/apache/tools/ant/taskdefs/optional/extension/JarLibDisplayTask.java | 119 |
1 files changed, 119 insertions, 0 deletions
diff --git a/framework/src/ant/apache-ant-1.9.6/src/main/org/apache/tools/ant/taskdefs/optional/extension/JarLibDisplayTask.java b/framework/src/ant/apache-ant-1.9.6/src/main/org/apache/tools/ant/taskdefs/optional/extension/JarLibDisplayTask.java new file mode 100644 index 00000000..da12cd02 --- /dev/null +++ b/framework/src/ant/apache-ant-1.9.6/src/main/org/apache/tools/ant/taskdefs/optional/extension/JarLibDisplayTask.java @@ -0,0 +1,119 @@ +/* + * 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 + * + * http://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.Iterator; +import java.util.Vector; + +import org.apache.tools.ant.BuildException; +import org.apache.tools.ant.DirectoryScanner; +import org.apache.tools.ant.Task; +import org.apache.tools.ant.types.FileSet; + +/** + * Displays the "Optional Package" and "Package Specification" information + * contained within the specified JARs. + * + * <p>Prior to JDK1.3, an "Optional Package" was known as an Extension. + * The specification for this mechanism is available in the JDK1.3 + * documentation in the directory + * $JDK_HOME/docs/guide/extensions/versioning.html. Alternatively it is + * available online at <a href="http://java.sun.com/j2se/1.3/docs/guide/extensions/versioning.html"> + * http://java.sun.com/j2se/1.3/docs/guide/extensions/versioning.html</a>.</p> + * + * @ant.task name="jarlib-display" + */ +public class JarLibDisplayTask extends Task { + /** + * The library to display information about. + */ + private File libraryFile; + + /** + * Filesets specifying all the librarys + * to display information about. + */ + private final Vector libraryFileSets = new Vector(); + + /** + * The JAR library to display information for. + * + * @param file The jar library to display information for. + */ + public void setFile(final File file) { + this.libraryFile = file; + } + + /** + * Adds a set of files about which library data will be displayed. + * + * @param fileSet a set of files about which library data will be displayed. + */ + public void addFileset(final FileSet fileSet) { + libraryFileSets.addElement(fileSet); + } + + /** + * Execute the task. + * + * @throws BuildException if the task fails. + */ + public void execute() throws BuildException { + validate(); + + final LibraryDisplayer displayer = new LibraryDisplayer(); + // Check if list of files to check has been specified + if (!libraryFileSets.isEmpty()) { + final Iterator iterator = libraryFileSets.iterator(); + while (iterator.hasNext()) { + final FileSet fileSet = (FileSet) iterator.next(); + final DirectoryScanner scanner + = fileSet.getDirectoryScanner(getProject()); + final File basedir = scanner.getBasedir(); + final String[] files = scanner.getIncludedFiles(); + for (int i = 0; i < files.length; i++) { + final File file = new File(basedir, files[ i ]); + displayer.displayLibrary(file); + } + } + } else { + displayer.displayLibrary(libraryFile); + } + } + + /** + * Validate the tasks parameters. + * + * @throws BuildException if invalid parameters found + */ + private void validate() throws BuildException { + if (null == libraryFile && libraryFileSets.isEmpty()) { + final String message = "File attribute not specified."; + throw new BuildException(message); + } + if (null != libraryFile && !libraryFile.exists()) { + final String message = "File '" + libraryFile + "' does not exist."; + throw new BuildException(message); + } + if (null != libraryFile && !libraryFile.isFile()) { + final String message = "\'" + libraryFile + "\' is not a file."; + throw new BuildException(message); + } + } +} |