Author: thomas.diesler(a)jboss.com Date: 2010-03-09 04:34:17 -0500 (Tue, 09 Mar 2010) New Revision: 102117 Added: projects/jboss-osgi/projects/vfs/trunk/api/src/main/java/org/jboss/osgi/vfs/ManifestBuilder.java Log: wip Added: projects/jboss-osgi/projects/vfs/trunk/api/src/main/java/org/jboss/osgi/vfs/ManifestBuilder.java =================================================================== --- projects/jboss-osgi/projects/vfs/trunk/api/src/main/java/org/jboss/osgi/vfs/ManifestBuilder.java (rev 0) +++ projects/jboss-osgi/projects/vfs/trunk/api/src/main/java/org/jboss/osgi/vfs/ManifestBuilder.java 2010-03-09 09:34:17 UTC (rev 102117) @@ -0,0 +1,138 @@ +/* +* JBoss, Home of Professional Open Source +* Copyright 2006, JBoss Inc., and individual contributors as indicated +* by the @authors tag. See the copyright.txt in the distribution for a +* full listing of individual contributors. +* +* This is free software; you can redistribute it and/or modify it +* under the terms of the GNU Lesser General Public License as +* published by the Free Software Foundation; either version 2.1 of +* the License, or (at your option) any later version. +* +* This software is distributed in the hope that it will be useful, +* but WITHOUT ANY WARRANTY; without even the implied warranty of +* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU +* Lesser General Public License for more details. +* +* You should have received a copy of the GNU Lesser General Public +* License along with this software; if not, write to the Free +* Software Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA +* 02110-1301 USA, or see the FSF site: http://www.fsf.org. +*/ +package org.jboss.osgi.vfs; + +import java.io.ByteArrayInputStream; +import java.io.IOException; +import java.io.PrintWriter; +import java.io.StringWriter; +import java.util.ArrayList; +import java.util.List; +import java.util.jar.Attributes; +import java.util.jar.Manifest; + +import org.osgi.framework.Constants; + +/** + * A simple OSGi manifest builder. + * + * @author thomas.diesler(a)jboss.com + * @since 08-Mar-2010 + */ +public final class ManifestBuilder +{ + private StringWriter sw; + private PrintWriter pw; + private List<String> importPackages = new ArrayList<String>(); + private List<String> exportPackages = new ArrayList<String>(); + + public static ManifestBuilder newInstance() + { + return new ManifestBuilder(); + } + + private ManifestBuilder() + { + sw = new StringWriter(); + pw = new PrintWriter(sw); + pw.println(Attributes.Name.MANIFEST_VERSION + ": 1.0"); + } + + public ManifestBuilder addBundleManifestVersion(int version) + { + pw.println(Constants.BUNDLE_MANIFESTVERSION + ": " + version); + return this; + } + + public ManifestBuilder addBundleSymbolicName(String symbolicName) + { + pw.println(Constants.BUNDLE_SYMBOLICNAME + ": " + symbolicName); + return this; + } + + public ManifestBuilder addBundleActivator(String bundleActivator) + { + pw.println(Constants.BUNDLE_ACTIVATOR + ": " + bundleActivator); + return this; + } + + public ManifestBuilder addImportPackages(String... packages) + { + for (String aux : packages) + importPackages.add(aux); + + return this; + } + + public ManifestBuilder addExportPackages(String... packages) + { + for (String aux : packages) + exportPackages.add(aux); + + return this; + } + + public ManifestBuilder addManifestHeader(String key, String value) + { + pw.println(key + ": " + value); + return this; + } + + public Manifest getManifest() + { + if (exportPackages.size() > 0) + { + pw.print(Constants.EXPORT_PACKAGE + ": "); + for (int i = 0; i < exportPackages.size(); i++) + { + if (i > 0) + pw.print(","); + + pw.print(exportPackages.get(i)); + } + pw.println(); + } + + if (importPackages.size() > 0) + { + pw.print(Constants.IMPORT_PACKAGE + ": "); + for (int i = 0; i < importPackages.size(); i++) + { + if (i > 0) + pw.print(","); + + pw.print(importPackages.get(i)); + } + pw.println(); + } + + try + { + Manifest manifest = new Manifest(new ByteArrayInputStream(sw.toString().getBytes())); + return manifest; + } + catch (IOException ex) + { + throw new IllegalStateException("Cannot create manifest", ex); + } + } +}