| /* |
| * 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.karaf.features; |
| |
| import java.util.regex.Pattern; |
| |
| import org.apache.felix.utils.manifest.Clause; |
| import org.apache.felix.utils.version.VersionCleaner; |
| import org.apache.felix.utils.version.VersionRange; |
| import org.osgi.framework.Version; |
| |
| /** |
| * Helper class to compare feature identifiers that may use globs and version ranges. |
| * |
| * Following feature identifiers are supported:<ul> |
| * <li>name (simple name)</li> |
| * <li>name/version (Karaf feature ID syntax)</li> |
| * <li>name/version-range (Karaf feature ID syntax using version-range)</li> |
| * <li>name;range=version (OSGi manifest header with <code>range</code> <em>attribute</em>)</li> |
| * <li>name;range=version-range (OSGi manifest header with <code>range</code> <em>attribute</em>)</li> |
| * </ul> |
| */ |
| public class FeaturePattern { |
| |
| public static final String RANGE = "range"; |
| |
| private String originalId; |
| private String nameString; |
| private Pattern namePattern; |
| private String versionString; |
| private Version version; |
| private VersionRange versionRange; |
| |
| public FeaturePattern(String featureId) throws IllegalArgumentException { |
| if (featureId == null) { |
| throw new IllegalArgumentException("Feature ID to match should not be null"); |
| } |
| originalId = featureId; |
| nameString = originalId; |
| if (originalId.indexOf("/") > 0) { |
| nameString = originalId.substring(0, originalId.indexOf("/")); |
| versionString = originalId.substring(originalId.indexOf("/") + 1); |
| } else if (originalId.contains(";")) { |
| Clause[] c = org.apache.felix.utils.manifest.Parser.parseClauses(new String[] { originalId }); |
| nameString = c[0].getName(); |
| versionString = c[0].getAttribute(RANGE); |
| } |
| namePattern = LocationPattern.toRegExp(nameString); |
| |
| if (versionString != null && versionString.length() >= 1) { |
| try { |
| char first = versionString.charAt(0); |
| if (first == '[' || first == '(') { |
| // range |
| versionRange = new VersionRange(versionString, true, false); |
| } else { |
| version = new Version(VersionCleaner.clean(versionString)); |
| } |
| } catch (IllegalArgumentException e) { |
| throw new IllegalArgumentException("Can't parse version \"" + versionString + "\" as OSGi version object.", e); |
| } |
| } else { |
| versionRange = new VersionRange(Version.emptyVersion); |
| } |
| } |
| |
| public String getOriginalFeatureId() { |
| return originalId; |
| } |
| |
| public String getName() { |
| return nameString; |
| } |
| |
| public String getVersion() { |
| return versionString; |
| } |
| |
| /** |
| * Returns <code>true</code> if this feature pattern matches given feature/version |
| * @param featureName |
| * @param featureVersion |
| * @return |
| */ |
| public boolean matches(String featureName, String featureVersion) { |
| if (featureName == null) { |
| return false; |
| } |
| boolean match = namePattern.matcher(featureName).matches(); |
| if (!match) { |
| return false; |
| } |
| if (featureVersion == null) { |
| featureVersion = "0"; |
| } |
| Version otherVersion = new Version(VersionCleaner.clean(featureVersion)); |
| if (versionRange != null) { |
| match = versionRange.contains(otherVersion); |
| } else if (version != null) { |
| match = version.equals(otherVersion); |
| } |
| return match; |
| } |
| |
| @Override |
| public String toString() { |
| return originalId; |
| } |
| |
| } |