[jboss-osgi-commits] JBoss-OSGI SVN: r102117 - projects/jboss-osgi/projects/vfs/trunk/api/src/main/java/org/jboss/osgi/vfs.

[jboss-osgi-commits at lists.jboss.org]

Author: thomas.diesler at 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 at 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);
+      }
+   }
+}