From a7511710b8f80fe27023704dabd479549b11ec85 Mon Sep 17 00:00:00 2001
From: Jason van Zyl <jvanzyl@apache.org>
Date: Mon, 16 May 2005 01:10:04 +0000
Subject: [PATCH] o improving the ease of use of metadata:

http://jira.codehaus.org/browse/MNG-395



git-svn-id: https://svn.apache.org/repos/asf/maven/components/trunk@170292 13f79535-47bb-0310-9956-ffa450edef68
---
 .../apache/maven/archiver/MavenArchiver.java  | 49 ++++++++++++++++++-
 1 file changed, 48 insertions(+), 1 deletion(-)

diff --git a/maven-archiver/src/main/java/org/apache/maven/archiver/MavenArchiver.java b/maven-archiver/src/main/java/org/apache/maven/archiver/MavenArchiver.java
index 8117803a44..f90b66cf9c 100644
--- a/maven-archiver/src/main/java/org/apache/maven/archiver/MavenArchiver.java
+++ b/maven-archiver/src/main/java/org/apache/maven/archiver/MavenArchiver.java
@@ -26,9 +26,12 @@
 
 import java.io.File;
 import java.io.IOException;
+import java.io.OutputStream;
+import java.io.FileOutputStream;
 import java.util.Iterator;
 import java.util.Set;
 import java.util.List;
+import java.util.Properties;
 
 /**
  * @author <a href="evenisse@apache.org">Emmanuel Venisse</a>
@@ -198,12 +201,50 @@ public void createArchive( MavenProject project, MavenArchiveConfiguration archi
         throws ArchiverException, ManifestException, IOException, DependencyResolutionRequiredException
     {
         // ----------------------------------------------------------------------
+        // We want to add the metadata for the project to the JAR in two forms:
         //
+        // The first form is that of the POM itself. Applications that wish to
+        // access the POM for an artifact using maven tools they can.
+        //
+        // The second form is that of a properties file containing the basic
+        // top-level POM elements so that applications that wish to access
+        // POM information without the use of maven tools can do so.
         // ----------------------------------------------------------------------
 
-        archiver.addFile( project.getFile(), "META-INF/maven/pom.xml" );
+        String groupId = project.getGroupId();
+
+        String artifactId = project.getArtifactId();
+
+        archiver.addFile( project.getFile(), "META-INF/maven/" + groupId + "/" + artifactId + "/pom.xml" );
+
+        // ----------------------------------------------------------------------
+        // Create pom.properties file
+        // ----------------------------------------------------------------------
+
+        Properties p = new Properties();
+
+        p.setProperty( "groupId", project.getGroupId() );
+
+        p.setProperty( "artifactId", project.getArtifactId() );
+
+        p.setProperty( "version", project.getVersion() );
+
+        File pomPropertiesFile = new File( project.getFile().getParentFile(), "pom.properties" );
+
+        OutputStream os = new FileOutputStream( pomPropertiesFile );
+
+        p.store( os, "Generated by Maven" );
+
+        os.close(); // stream is flushed but not closed by Properties.store()
+
+        archiver.addFile( pomPropertiesFile, "META-INF/maven/" + groupId + "/" + artifactId + "/pom.properties" );
+
+        // ----------------------------------------------------------------------
+        // Create the manifest
+        // ----------------------------------------------------------------------
 
         String manifestFile = archiveConfiguration.getManifestFile();
+
         if ( manifestFile != null && !"".equals( manifestFile ) )
         {
             archiver.setManifest( new File( manifestFile ) );
@@ -215,10 +256,16 @@ public void createArchive( MavenProject project, MavenArchiveConfiguration archi
         archiver.addConfiguredManifest( manifest );
 
         archiver.setCompress( archiveConfiguration.isCompress() );
+
         archiver.setIndex( archiveConfiguration.isIndex() );
+
         archiver.setDestFile( archiveFile );
 
         // create archive
         archiver.createArchive();
+
+        // Cleanup
+
+        pomPropertiesFile.delete();
     }
 }