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
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index 00000000..da12cd02
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+++ 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);
+        }
+    }
+}