FELIX-3011: add 'instructions' goal which dumps the BND instructions to 'target/instructions.bnd' without building the bundle/manifest

git-svn-id: https://svn.apache.org/repos/asf/felix/trunk@1140890 13f79535-47bb-0310-9956-ffa450edef68
diff --git a/bundleplugin/src/main/java/org/apache/felix/bundleplugin/InstructionsPlugin.java b/bundleplugin/src/main/java/org/apache/felix/bundleplugin/InstructionsPlugin.java
new file mode 100644
index 0000000..9427f92
--- /dev/null
+++ b/bundleplugin/src/main/java/org/apache/felix/bundleplugin/InstructionsPlugin.java
@@ -0,0 +1,75 @@
+/*
+ * 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.felix.bundleplugin;
+
+
+import java.io.File;
+import java.io.FileNotFoundException;
+import java.io.IOException;
+import java.util.Map;
+import java.util.Properties;
+
+import org.apache.maven.plugin.MojoExecutionException;
+import org.apache.maven.plugin.MojoFailureException;
+import org.apache.maven.project.MavenProject;
+
+import aQute.lib.osgi.Jar;
+
+
+/**
+ * Generate BND instructions for this project
+ * 
+ * @goal instructions
+ * @requiresDependencyResolution test
+ * @threadSafe
+ */
+public class InstructionsPlugin extends BundlePlugin
+{
+    protected void execute( MavenProject project, Map instructions, Properties properties, Jar[] classpath )
+        throws MojoExecutionException
+    {
+        if ( dumpInstructions == null )
+        {
+            dumpInstructions = new File( getBuildDirectory(), "instructions.bnd" );
+        }
+
+        try
+        {
+            addMavenInstructions( project, getOSGiBuilder( project, instructions, properties, classpath ) );
+        }
+        catch ( FileNotFoundException e )
+        {
+            throw new MojoExecutionException( "Cannot find " + e.getMessage(), e );
+        }
+        catch ( IOException e )
+        {
+            throw new MojoExecutionException( "Error trying to generate instructions", e );
+        }
+        catch ( MojoFailureException e )
+        {
+            getLog().error( e.getLocalizedMessage() );
+            throw new MojoExecutionException( "Error(s) found in instructions", e );
+        }
+        catch ( Exception e )
+        {
+            getLog().error( "An internal error occurred", e );
+            throw new MojoExecutionException( "Internal error in maven-bundle-plugin", e );
+        }
+    }
+}