| package org.apache.maven.shared.runtime; |
| |
| /* |
| * 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. |
| */ |
| |
| import java.io.IOException; |
| import java.io.InputStream; |
| import java.net.URL; |
| import java.net.URLConnection; |
| import java.util.ArrayList; |
| import java.util.Collections; |
| import java.util.List; |
| import java.util.Properties; |
| |
| import org.codehaus.plexus.util.IOUtil; |
| |
| /** |
| * A visitor that parses and collects Maven project property files. |
| * |
| * @author <a href="mailto:markhobson@gmail.com">Mark Hobson</a> |
| * @version $Id$ |
| */ |
| public class PropertiesMavenRuntimeVisitor implements MavenRuntimeVisitor |
| { |
| // constants -------------------------------------------------------------- |
| |
| /** |
| * The group id property name in a Maven project property file. |
| */ |
| private static final String GROUP_ID_PROPERTY = "groupId"; |
| |
| /** |
| * The artifact id property name in a Maven project property file. |
| */ |
| private static final String ARTIFACT_ID_PROPERTY = "artifactId"; |
| |
| /** |
| * The version property name in a Maven project property file. |
| */ |
| private static final String VERSION_PROPERTY = "version"; |
| |
| // fields ----------------------------------------------------------------- |
| |
| /** |
| * A list of the collected <code>MavenProjectProperties</code>. |
| */ |
| private final List<MavenProjectProperties> projects; |
| |
| // constructors ----------------------------------------------------------- |
| |
| /** |
| * Creates a new <code>PropertiesMavenRuntimeVisitor</code>. |
| */ |
| public PropertiesMavenRuntimeVisitor() |
| { |
| projects = new ArrayList<MavenProjectProperties>(); |
| } |
| |
| // MavenRuntimeVisitor methods -------------------------------------------- |
| |
| /** |
| * {@inheritDoc} |
| */ |
| public void visitProjectProperties( URL url ) throws MavenRuntimeException |
| { |
| MavenProjectProperties project = parseProjectProperties( url ); |
| |
| projects.add( project ); |
| } |
| |
| /** |
| * {@inheritDoc} |
| */ |
| public void visitProjectXML( URL url ) throws MavenRuntimeException |
| { |
| // no-op |
| } |
| |
| // public methods --------------------------------------------------------- |
| |
| /** |
| * Gets the collected Maven project properties. |
| * |
| * @return a list of the collected <code>MavenProjectProperties</code> |
| */ |
| public List<MavenProjectProperties> getProjects() |
| { |
| return Collections.unmodifiableList( projects ); |
| } |
| |
| // private methods -------------------------------------------------------- |
| |
| /** |
| * Parses the specified Maven project properties into a <code>MavenProjectProperties</code> object. |
| * |
| * @param url |
| * a URL to the Maven project properties |
| * @return a <code>MavenProjectProperties</code> object that represents the properties |
| * @throws MavenRuntimeException |
| * if an error occurs parsing the properties |
| */ |
| private MavenProjectProperties parseProjectProperties( URL url ) throws MavenRuntimeException |
| { |
| Properties properties = new Properties(); |
| |
| InputStream in = null; |
| |
| try |
| { |
| URLConnection connection = url.openConnection(); |
| connection.setUseCaches( false ); |
| |
| in = connection.getInputStream(); |
| |
| properties.load( in ); |
| } |
| catch ( IOException exception ) |
| { |
| throw new MavenRuntimeException( "Cannot read project properties", exception ); |
| } |
| finally |
| { |
| IOUtil.close( in ); |
| } |
| |
| String groupId = properties.getProperty( GROUP_ID_PROPERTY ); |
| String artifactId = properties.getProperty( ARTIFACT_ID_PROPERTY ); |
| String version = properties.getProperty( VERSION_PROPERTY ); |
| |
| return new MavenProjectProperties( groupId, artifactId, version ); |
| } |
| } |