| /* |
| * 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.sling.testing.mock.osgi; |
| |
| import java.io.IOException; |
| import java.io.InputStream; |
| import java.net.URL; |
| import java.util.Collection; |
| import java.util.Enumeration; |
| import java.util.LinkedHashSet; |
| import java.util.Set; |
| import java.util.jar.Attributes; |
| import java.util.jar.JarFile; |
| import java.util.jar.Manifest; |
| |
| import org.apache.commons.lang3.StringUtils; |
| import org.slf4j.Logger; |
| import org.slf4j.LoggerFactory; |
| |
| /** |
| * Scan METAINF/MANIFEST.MF files. |
| */ |
| public final class ManifestScanner { |
| |
| private static final Logger log = LoggerFactory.getLogger(ManifestScanner.class); |
| |
| private ManifestScanner() { |
| // static methods only |
| } |
| |
| /** |
| * Get all bundle header values stored in MANIFEST.MF files as attributes. |
| * Attributes values from all manifest files are collected, and values separated by "," are returned individually. |
| * The order of the values from each entry is preserved, but the overall order when multiple bundles define such an entry |
| * is not deterministic. Duplicate values are eliminated. |
| * @param attributeName Attribute / Bundle header name. |
| * @return List of values. |
| */ |
| public static Collection<String> getValues(final String attributeName) { |
| Set<String> values = new LinkedHashSet<String>(); |
| try { |
| Enumeration<URL> resEnum = ManifestScanner.class.getClassLoader().getResources(JarFile.MANIFEST_NAME); |
| while (resEnum.hasMoreElements()) { |
| try { |
| URL url = (URL)resEnum.nextElement(); |
| InputStream is = url.openStream(); |
| if (is != null) { |
| try { |
| Manifest manifest = new Manifest(is); |
| Attributes mainAttribs = manifest.getMainAttributes(); |
| String valueList = mainAttribs.getValue(attributeName); |
| String[] valueArray = StringUtils.split(valueList, ","); |
| if (valueArray != null) { |
| for (String value : valueArray) { |
| if (!StringUtils.isBlank(value)) { |
| values.add(StringUtils.trim(value)); |
| } |
| } |
| } |
| } |
| finally { |
| is.close(); |
| } |
| } |
| } |
| catch (Throwable ex) { |
| log.warn("Unable to read JAR manifest.", ex); |
| } |
| } |
| } |
| catch (IOException ex) { |
| log.warn("Unable to read JAR manifests.", ex); |
| } |
| return values; |
| } |
| |
| } |