| /* |
| * 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.text.ParseException; |
| import java.util.jar.Manifest; |
| import org.apache.tools.ant.BuildException; |
| |
| /** |
| * Utility class to output the information in a jar relating |
| * to "Optional Packages" (formely known as "Extensions") |
| * and Package Specifications. |
| * |
| */ |
| class LibraryDisplayer { |
| /** |
| * Display the extensions and specifications contained |
| * within specified file. |
| * |
| * @param file the file |
| * @throws BuildException if fail to read file |
| */ |
| void displayLibrary(final File file) |
| throws BuildException { |
| final Manifest manifest = ExtensionUtil.getManifest(file); |
| displayLibrary(file, manifest); |
| } |
| |
| /** |
| * Display the extensions and specifications contained |
| * within specified file. |
| * |
| * @param file the file to use while reporting |
| * @param manifest the manifest of file |
| * @throws BuildException if fail to read file |
| */ |
| void displayLibrary(final File file, |
| final Manifest manifest) |
| throws BuildException { |
| final Extension[] available = Extension.getAvailable(manifest); |
| final Extension[] required = Extension.getRequired(manifest); |
| final Extension[] options = Extension.getOptions(manifest); |
| final Specification[] specifications = getSpecifications(manifest); |
| |
| if (0 == available.length && 0 == required.length && 0 == options.length |
| && 0 == specifications.length) { |
| return; |
| } |
| |
| final String message = "File: " + file; |
| final int size = message.length(); |
| printLine(size); |
| System.out.println(message); |
| printLine(size); |
| if (0 != available.length) { |
| System.out.println("Extensions Supported By Library:"); |
| for (int i = 0; i < available.length; i++) { |
| final Extension extension = available[ i ]; |
| System.out.println(extension.toString()); |
| } |
| } |
| |
| if (0 != required.length) { |
| System.out.println("Extensions Required By Library:"); |
| for (int i = 0; i < required.length; i++) { |
| final Extension extension = required[ i ]; |
| System.out.println(extension.toString()); |
| } |
| } |
| |
| if (0 != options.length) { |
| System.out.println("Extensions that will be used by Library if present:"); |
| for (int i = 0; i < options.length; i++) { |
| final Extension extension = options[ i ]; |
| System.out.println(extension.toString()); |
| } |
| } |
| |
| if (0 != specifications.length) { |
| System.out.println("Specifications Supported By Library:"); |
| for (int i = 0; i < specifications.length; i++) { |
| final Specification specification = specifications[ i ]; |
| displaySpecification(specification); |
| } |
| } |
| } |
| |
| /** |
| * Print out a line of '-'s equal to specified size. |
| * |
| * @param size the number of dashes to printout |
| */ |
| private void printLine(final int size) { |
| for (int i = 0; i < size; i++) { |
| System.out.print("-"); |
| } |
| System.out.println(); |
| } |
| |
| /** |
| * Get specifications from manifest. |
| * |
| * @param manifest the manifest |
| * @return the specifications or null if none |
| * @throws BuildException if malformed specification sections |
| */ |
| private Specification[] getSpecifications(final Manifest manifest) |
| throws BuildException { |
| try { |
| return Specification.getSpecifications(manifest); |
| } catch (final ParseException pe) { |
| throw new BuildException(pe.getMessage(), pe); |
| } |
| } |
| |
| /** |
| * Print out specification details. |
| * |
| * @param specification the specification |
| */ |
| private void displaySpecification(final Specification specification) { |
| final String[] sections = specification.getSections(); |
| if (null != sections) { |
| final StringBuffer sb = new StringBuffer("Sections: "); |
| for (int i = 0; i < sections.length; i++) { |
| sb.append(" "); |
| sb.append(sections[ i ]); |
| } |
| System.out.println(sb); |
| } |
| System.out.println(specification.toString()); |
| } |
| } |