eclipse-signing-maven-plugin/src/main/java/org/eclipse/dash/m4e/eclipse/signing/ChecksumMojo.java - dash/org.eclipse.dash.maven - Git at Google

 package org.eclipse.dash.m4e.eclipse.signing;

 //========================================================================
 //Copyright (c) 2010 Intalio, Inc.
 //------------------------------------------------------------------------
 //All rights reserved. This program and the accompanying materials
 //are made available under the terms of the Eclipse Public License v1.0
 //and Apache License v2.0 which accompanies this distribution.
 //The Eclipse Public License is available at
 //http://www.eclipse.org/legal/epl-v10.html
 //The Apache License v2.0 is available at
 //http://www.opensource.org/licenses/apache2.0.php
 //You may elect to redistribute this code under either of these licenses.
 //========================================================================

 import java.io.File;
 import java.io.FileInputStream;
 import java.io.InputStream;
 import java.security.MessageDigest;
 import java.util.Iterator;
 import java.util.List;
 import java.util.regex.Pattern;

 import javax.xml.parsers.DocumentBuilder;
 import javax.xml.parsers.DocumentBuilderFactory;
 import javax.xml.transform.Transformer;
 import javax.xml.transform.TransformerFactory;
 import javax.xml.transform.dom.DOMSource;
 import javax.xml.transform.stream.StreamResult;
 import javax.xml.xpath.XPath;
 import javax.xml.xpath.XPathConstants;
 import javax.xml.xpath.XPathFactory;

 import org.apache.maven.plugin.MojoExecutionException;
 import org.apache.maven.plugin.MojoFailureException;
 import org.codehaus.plexus.archiver.zip.ZipArchiver;
 import org.codehaus.plexus.archiver.zip.ZipUnArchiver;
 import org.codehaus.plexus.util.FileUtils;
 import org.w3c.dom.Document;
 import org.w3c.dom.Element;
 import org.w3c.dom.Node;
 import org.w3c.dom.NodeList;

 /**
  * This plugin walks through a p2 repository and repairs the artifacts.xml.
  * <br/>
  * It also insert the property <code>&lt;property name='publishPackFilesAsSiblings' value='true'/&gt;</code>
  * and the mapping rules if they were not present already:
  * <br/>
  * <code>&lt;rule filter='(&amp; (classifier=osgi.bundle) (format=packed))'
  *    output='${repoUrl}/plugins/${id}_${version}.jar.pack.gz'/&gt;</code>
  * <br/><code>&lt;rule filter='(&amp; (classifier=org.eclipse.update.feature) (format=packed))'
  *    output='${repoUrl}/features/${id}_${version}.jar.pack.gz'/&gt;</code>
  * @goal fixCheckSums
  * @phase package
  * @description updates the md5 checksum and file size
  */
 public class ChecksumMojo extends AbstractEclipseSigningMojo
 {
     /**
      * zip file to get checksum'ed
      *
      * @parameter default-value="${project.build.directory}/packed/site_assembly.zip"
      * @required
      */
     protected String inputFile;

     /**
      * zip file to get checksum'ed
      *
      * @parameter default-value="${project.build.directory}/fixed/site_assembly.zip"
      * @required
      */
     protected String outputFile;

     /**
      * zip file to get checksum'ed
      *
      * @parameter default-value="${project.build.directory}/checksumFix"
      * @required
      */
     protected String unzipDir;

     /**
      * unpack path for artifact
      *
      * @parameter default-value="/"
      * @required
      */
     protected String unpackPath;

     /**
      * checksum file
      *
      * @parameter default-value="${project.build.directory}/checksumFix/artifacts.xml
      * @required
      */
     protected String artifactsXml;

     public void execute() throws MojoExecutionException, MojoFailureException
     {
         try
         {

             if (!FileUtils.fileExists(unzipDir))
             {
                 info("creating directory to hold unzipped artifact");
                 FileUtils.mkdir(unzipDir);
             }

             if (!FileUtils.fileExists(FileUtils.dirname(outputFile)))
             {
                 info("creating directory to hold output");
                 FileUtils.mkdir(FileUtils.dirname(outputFile));
             }

             ZipUnArchiver unzipper = new ZipUnArchiver(new File(inputFile));
             unzipper.extract("",new File(unzipDir));

             ZipUnArchiver unzipper2 = new ZipUnArchiver(new File(unzipDir + "/artifacts.jar"));
             unzipper2.extract("",new File(unzipDir));

             FileUtils.fileDelete(unzipDir + "/artifacts.jar.pack.gz");
             FileUtils.fileDelete(unzipDir + "/content.jar.pack.gz");

             insertPropertyAndMappingRules();

             @SuppressWarnings("unchecked")
             List<String> files = FileUtils.getFileNames(new File(unzipDir),"**/*.jar","",true);

             for (Iterator<String> i = files.iterator(); i.hasNext();)
             {
                 String filename = i.next();
                 info("Processing: " + filename);
                 if (filename.endsWith("artifacts.jar"))
                 {
                     continue;
                 }
                 else if (filename.endsWith("content.jar"))
                 {
                     continue;
                 }
                 else
                 {
                     update(filename);
                 }
             }

             FileUtils.fileDelete(unzipDir + "/artifacts.jar");

             ZipArchiver zipper = new ZipArchiver();
             zipper.addFile(new File(unzipDir + "/artifacts.xml"),"artifacts.xml");
             // zipper.addDirectory(new File(unzipDir));
             zipper.setDestFile(new File(unzipDir + "/artifacts.jar"));
             zipper.createArchive();

             FileUtils.fileDelete(unzipDir + "/artifacts.xml");
         }
         catch (Exception e)
         {
             e.printStackTrace();
         }

     }

     private void update(String plugin)
     {
         try
         {
             /*
              * some people have features the same as plugins features so we need to tweak the xpath
              */
             boolean isPlugin = plugin.contains("/plugins/");

             String pluginFile = FileUtils.basename(plugin,".jar");

             Pattern p = Pattern.compile("_\\d*\\.");

         	String[] bits = p.split(pluginFile);

         	//System.out.println(file.substring(0, bits[0].length()) + " / " + file.substring(bits[0].length() + 1 , file.length()));

             int versionSplitUnderscore = bits[0].length();

             String[] artifactBits = new String[2];

             artifactBits[0] = pluginFile.substring(0,versionSplitUnderscore);
             artifactBits[1] = pluginFile.substring(versionSplitUnderscore + 1, pluginFile.length());

             getLog().info(" Artifact: " + artifactBits[0] + " / Version: " + artifactBits[1] + " / isPlugin: " + isPlugin );

             File inFile = new File(plugin);
             String inFileSize = Long.toString(inFile.length());

             int count = 0;
             byte[] buffer = new byte[1024 * 16];
             InputStream in = new FileInputStream(inFile);
             MessageDigest md = MessageDigest.getInstance("MD5");

             while ((count = in.read(buffer)) > 0)
             {
                 md.update(buffer,0,count);
             }
             in.close();

             String inFileMD5 = convert(md.digest());// (new BigInteger(1, md.digest())).toString(16);

             DocumentBuilder builder = DocumentBuilderFactory.newInstance().newDocumentBuilder();
             Document document = builder.parse(new File(artifactsXml));

             String expr;
             XPath xpath = XPathFactory.newInstance().newXPath();

             if ( isPlugin )
             {
                 expr = "/repository/artifacts//artifact[@id='" + artifactBits[0] + "' and @version='" + artifactBits[1] + "' and @classifier='osgi.bundle']/properties//property[@name='artifact.size']/@value";
             }
             else
             {
                 expr = "/repository/artifacts//artifact[@id='" + artifactBits[0] + "' and @version='" + artifactBits[1] + "' and @classifier='org.eclipse.update.feature']/properties//property[@name='artifact.size']/@value";
             }
             Node artifactSize = (Node)xpath.evaluate(expr,document,XPathConstants.NODE);
             if (artifactSize != null)
             {
                 artifactSize.setNodeValue(inFileSize);
             }

             if (isPlugin)
             {
                 expr = "/repository/artifacts//artifact[@id='" + artifactBits[0] + "' and @version='" + artifactBits[1] + "' and @classifier='osgi.bundle']/properties//property[@name='download.size']/@value";
             }
             else
             {
                 expr = "/repository/artifacts//artifact[@id='" + artifactBits[0] + "' and @version='" + artifactBits[1] + "' and @classifier='org.eclipse.update.feature']/properties//property[@name='download.size']/@value";
             }

             Node downloadSize = (Node)xpath.evaluate(expr,document,XPathConstants.NODE);
             if (downloadSize != null)
             {
                 downloadSize.setNodeValue(inFileSize);
             }

             if ( isPlugin )
             {
                 expr = "/repository/artifacts//artifact[@id='" + artifactBits[0] + "' and @version='" + artifactBits[1] + "' and @classifier='osgi.bundle']/properties//property[@name='download.md5']/@value";
             }
             else
             {
                 expr = "/repository/artifacts//artifact[@id='" + artifactBits[0] + "' and @version='" + artifactBits[1] + "' and @classifier='org.eclipse.update.feature']/properties//property[@name='download.md5']/@value";
             }
             Node downloadMD5 = (Node)xpath.evaluate(expr,document,XPathConstants.NODE);
             if (downloadMD5 != null)
             {
                 downloadMD5.setNodeValue(inFileMD5);
             }

             if (FileUtils.fileExists(plugin + ".pack.gz"))
             {
                 File packFile = new File(plugin + ".pack.gz");
                 String packFileSize = Long.toString(packFile.length());

                 expr = "/repository/artifacts";// //artifact[@id='" + artifactBits[0] + "' and @version='" + artifactBits[1] + "']";
                 Node normal = (Node)xpath.evaluate(expr,document,XPathConstants.NODE);
                 Element packed = document.createElement("artifact");

                 packed.setAttribute("classifier", isPlugin ? "osgi.bundle" : "org.eclipse.update.feature");
                 packed.setAttribute("id",artifactBits[0]);
                 packed.setAttribute("version",artifactBits[1]);

                 Element processing = document.createElement("processing");
                 processing.setAttribute("size","1");
                 packed.appendChild(processing);

                 Element step = document.createElement("step");
                 step.setAttribute("id","org.eclipse.equinox.p2.processing.Pack200Unpacker");
                 step.setAttribute("required","true");
                 processing.appendChild(step);

                 Element properties = document.createElement("properties");
                 properties.setAttribute("size","3");
                 packed.appendChild(properties);

                 Element prop1 = document.createElement("property");
                 prop1.setAttribute("name","artifact.size");
                 prop1.setAttribute("value",inFileSize);
                 properties.appendChild(prop1);

                 Element prop2 = document.createElement("property");
                 prop2.setAttribute("name","download.size");
                 prop2.setAttribute("value",packFileSize);
                 properties.appendChild(prop2);

                 Element prop3 = document.createElement("property");
                 prop3.setAttribute("name","format");
                 prop3.setAttribute("value","packed");
                 properties.appendChild(prop3);

                 normal.appendChild(packed);

             }

             Transformer txformer = TransformerFactory.newInstance().newTransformer();
             DOMSource src = new DOMSource(document);
             StreamResult res = new StreamResult(artifactsXml);
             txformer.transform(src,res);
         }
         catch (Exception e)
         {
             getLog().error(e);
         }
     }

     /**
      * Creates the extra property and mapping rules for the pack.gz
      */
     protected void insertPropertyAndMappingRules()
     {
     	try
     	{
 	        DocumentBuilder builder = DocumentBuilderFactory.newInstance().newDocumentBuilder();
 	        Document document = builder.parse(new File(artifactsXml));

 	        boolean documentWasModified = false;

 	        {
 	        //<property name='publishPackFilesAsSiblings' value='true'/>
 	        String selectPublishPackfilesAsSiblings = "/repository/properties/property[@name='publishPackFilesAsSiblings']";
 	        XPath xpath = XPathFactory.newInstance().newXPath();
 	        Element propertyEl = (Element)xpath.evaluate(selectPublishPackfilesAsSiblings,document,XPathConstants.NODE);

 	        String selectProperties = "/repository/properties";
 	        xpath = XPathFactory.newInstance().newXPath();
 	        Element propertiesEl = (Element)xpath.evaluate(selectProperties,document,XPathConstants.NODE);
 	        if (propertiesEl == null)
 	        {
 	        	throw new IllegalArgumentException("The artifacts.xml document must have a /repository/properties element.");
 	        }

 	        if (propertyEl == null)
     		{
 		        Element publishPackElem = document.createElement("property");
 		        publishPackElem.setAttribute("name", "publishPackFilesAsSiblings");
 		        publishPackElem.setAttribute("value", "true");
 		        propertiesEl.appendChild(publishPackElem);
 		        documentWasModified = true;
     		}
 	        else
 	        {
 	        	if (!"true".equals(propertyEl.getAttribute("value")))
 	        	{
 	        		propertyEl.setAttribute("value", "true");
 	        		documentWasModified = true;
 	        	}
 	        }

 	        //update the number of properties attribute
 	        if (documentWasModified)
 	        {
 	        	int size = propertiesEl.getElementsByTagName("property").getLength();
 	        	propertiesEl.setAttribute("size", String.valueOf(size));
 	        }
 	        }//end of properties processor

 	        {
 	        //<rule filter='(&amp; (classifier=osgi.bundle) (format=packed))'
 	        //      output='${repoUrl}/plugins/${id}_${version}.jar.pack.gz'/>
 	        //<rule filter='(&amp; (classifier=org.eclipse.update.feature) (format=packed))'
 	        //      output='${repoUrl}/features/${id}_${version}.jar.pack.gz'/>
 	        String selectMappings = "/repository/mappings";
 	        XPath xpath = XPathFactory.newInstance().newXPath();
 	        Element mappingsEl = (Element)xpath.evaluate(selectMappings,document,XPathConstants.NODE);
 	        if (mappingsEl == null)
 	        {
 	        	throw new IllegalArgumentException("The artifacts.xml document must have a /repository/mappings element.");
 	        }

 	        //Just iterate over the rules elements and look at the value of the attributes.
 	        boolean foundPackedBundleFilter = false;
 	        boolean foundPackedFeatureFilter = false;
 	        NodeList nl = mappingsEl.getChildNodes();
 	        for (int i = 0; i < nl.getLength(); i++)
 	        {
 	        	Node c = nl.item(i);
 	        	if (c.getNodeType() == Node.ELEMENT_NODE)
 	        	{
 	        		Element rule = (Element)c;
 	        		String filter = rule.getAttribute("filter");
 	        		if (filter.indexOf("format=packed") != -1)
 	        		{
 	        			if (filter.indexOf("classifier=osgi.bundle") != -1)
 	        			{
 	        				foundPackedBundleFilter = true;
 	        			}
 	        			else if (filter.indexOf("classifier=org.eclipse.update.feature") != -1)
 	        			{
 	        				foundPackedFeatureFilter = true;
 	        			}
 	        			if (foundPackedBundleFilter && foundPackedFeatureFilter)
 	        			{
 	        				break;
 	        			}
 	        		}
 	        	}
 	        }
 	        if (!foundPackedBundleFilter)
 	        {
 		        Element ruleElem = document.createElement("rule");
 		        ruleElem.setAttribute("filter", "(& (classifier=osgi.bundle) (format=packed))");
 		        ruleElem.setAttribute("output", "${repoUrl}/plugins/${id}_${version}.jar.pack.gz");
 		        // Bug 356931 format=packed must be first rule in mappings
 		        Node firstRule = mappingsEl.getFirstChild();
 		        mappingsEl.insertBefore(ruleElem, firstRule);
 		        documentWasModified = true;
 	        }
 	        if (!foundPackedFeatureFilter)
 	        {
 		        Element ruleElem = document.createElement("rule");
 		        ruleElem.setAttribute("filter", "(& (classifier=org.eclipse.update.feature) (format=packed))");
 		        ruleElem.setAttribute("output", "${repoUrl}/features/${id}_${version}.jar.pack.gz");
 		        // Bug 356931 format=packed must be first rule in mappings
 		        Node firstRule = mappingsEl.getFirstChild();
 		        mappingsEl.insertBefore(ruleElem, firstRule);

 		        documentWasModified = true;
 	        }
 	        //update the number of properties attribute
 	        if (!foundPackedFeatureFilter || !foundPackedBundleFilter)
 	        {
 	        	int size = mappingsEl.getElementsByTagName("rule").getLength();
 	        	mappingsEl.setAttribute("size", String.valueOf(size));
 	        }

 	        }//end of rules processor

 	        if (documentWasModified)
 	        {
 	            Transformer txformer = TransformerFactory.newInstance().newTransformer();
 	            DOMSource src = new DOMSource(document);
 	            StreamResult res = new StreamResult(artifactsXml);
 	            txformer.transform(src,res);
 	        }
         }
         catch (Exception e)
         {
             getLog().error(e);
         }

     }

     private String convert(byte[] bytes)
     {
         StringBuffer sb = new StringBuffer();

         for (int i = 0; i < bytes.length; ++i)
         {
             sb.append(Character.forDigit((bytes[i] >> 4) & 0xf,16));
             sb.append(Character.forDigit(bytes[i] & 0xf,16));
         }
         return sb.toString();
     }

     private void info(String log)
     {
         getLog().info("[FIX] " + log);
     }

     public static void main(String[] args ) throws Exception
     {
     	String file = "org.eclipse.equinox.server.core_1.1.1.R37x_v20110907-7K7TFBYDzbeA3ypK_98cDL15A4A";
     	Pattern p = Pattern.compile("_\\d");

     	String[] bits = p.split(file);

     	System.out.println(file.substring(0, bits[0].length()) + " / " + file.substring(bits[0].length() + 1 , file.length()));


     }


 }
	package org.eclipse.dash.m4e.eclipse.signing;

	//========================================================================
	//Copyright (c) 2010 Intalio, Inc.
	//------------------------------------------------------------------------
	//All rights reserved. This program and the accompanying materials
	//are made available under the terms of the Eclipse Public License v1.0
	//and Apache License v2.0 which accompanies this distribution.
	//The Eclipse Public License is available at
	//http://www.eclipse.org/legal/epl-v10.html
	//The Apache License v2.0 is available at
	//http://www.opensource.org/licenses/apache2.0.php
	//You may elect to redistribute this code under either of these licenses.
	//========================================================================

	import java.io.File;
	import java.io.FileInputStream;
	import java.io.InputStream;
	import java.security.MessageDigest;
	import java.util.Iterator;
	import java.util.List;
	import java.util.regex.Pattern;

	import javax.xml.parsers.DocumentBuilder;
	import javax.xml.parsers.DocumentBuilderFactory;
	import javax.xml.transform.Transformer;
	import javax.xml.transform.TransformerFactory;
	import javax.xml.transform.dom.DOMSource;
	import javax.xml.transform.stream.StreamResult;
	import javax.xml.xpath.XPath;
	import javax.xml.xpath.XPathConstants;
	import javax.xml.xpath.XPathFactory;

	import org.apache.maven.plugin.MojoExecutionException;
	import org.apache.maven.plugin.MojoFailureException;
	import org.codehaus.plexus.archiver.zip.ZipArchiver;
	import org.codehaus.plexus.archiver.zip.ZipUnArchiver;
	import org.codehaus.plexus.util.FileUtils;
	import org.w3c.dom.Document;
	import org.w3c.dom.Element;
	import org.w3c.dom.Node;
	import org.w3c.dom.NodeList;

	/**
	* This plugin walks through a p2 repository and repairs the artifacts.xml.
	* <br/>
	* It also insert the property <code><property name='publishPackFilesAsSiblings' value='true'/></code>
	* and the mapping rules if they were not present already:
	* <br/>
	* <code><rule filter='(& (classifier=osgi.bundle) (format=packed))'
	* output='${repoUrl}/plugins/${id}_${version}.jar.pack.gz'/></code>
	* <br/><code><rule filter='(& (classifier=org.eclipse.update.feature) (format=packed))'
	* output='${repoUrl}/features/${id}_${version}.jar.pack.gz'/></code>
	* @goal fixCheckSums
	* @phase package
	* @description updates the md5 checksum and file size
	*/
	public class ChecksumMojo extends AbstractEclipseSigningMojo
	{
	/**
	* zip file to get checksum'ed
	*
	* @parameter default-value="${project.build.directory}/packed/site_assembly.zip"
	* @required
	*/
	protected String inputFile;

	/**
	* zip file to get checksum'ed
	*
	* @parameter default-value="${project.build.directory}/fixed/site_assembly.zip"
	* @required
	*/
	protected String outputFile;

	/**
	* zip file to get checksum'ed
	*
	* @parameter default-value="${project.build.directory}/checksumFix"
	* @required
	*/
	protected String unzipDir;

	/**
	* unpack path for artifact
	*
	* @parameter default-value="/"
	* @required
	*/
	protected String unpackPath;

	/**
	* checksum file
	*
	* @parameter default-value="${project.build.directory}/checksumFix/artifacts.xml
	* @required
	*/
	protected String artifactsXml;

	public void execute() throws MojoExecutionException, MojoFailureException
	{
	try
	{

	if (!FileUtils.fileExists(unzipDir))
	{
	info("creating directory to hold unzipped artifact");
	FileUtils.mkdir(unzipDir);
	}

	if (!FileUtils.fileExists(FileUtils.dirname(outputFile)))
	{
	info("creating directory to hold output");
	FileUtils.mkdir(FileUtils.dirname(outputFile));
	}

	ZipUnArchiver unzipper = new ZipUnArchiver(new File(inputFile));
	unzipper.extract("",new File(unzipDir));

	ZipUnArchiver unzipper2 = new ZipUnArchiver(new File(unzipDir + "/artifacts.jar"));
	unzipper2.extract("",new File(unzipDir));

	FileUtils.fileDelete(unzipDir + "/artifacts.jar.pack.gz");
	FileUtils.fileDelete(unzipDir + "/content.jar.pack.gz");

	insertPropertyAndMappingRules();

	@SuppressWarnings("unchecked")
	List<String> files = FileUtils.getFileNames(new File(unzipDir),"*/.jar","",true);

	for (Iterator<String> i = files.iterator(); i.hasNext();)
	{
	String filename = i.next();
	info("Processing: " + filename);
	if (filename.endsWith("artifacts.jar"))
	{
	continue;
	}
	else if (filename.endsWith("content.jar"))
	{
	continue;
	}
	else
	{
	update(filename);
	}
	}

	FileUtils.fileDelete(unzipDir + "/artifacts.jar");

	ZipArchiver zipper = new ZipArchiver();
	zipper.addFile(new File(unzipDir + "/artifacts.xml"),"artifacts.xml");
	// zipper.addDirectory(new File(unzipDir));
	zipper.setDestFile(new File(unzipDir + "/artifacts.jar"));
	zipper.createArchive();

	FileUtils.fileDelete(unzipDir + "/artifacts.xml");
	}
	catch (Exception e)
	{
	e.printStackTrace();
	}

	}

	private void update(String plugin)
	{
	try
	{
	/*
	* some people have features the same as plugins features so we need to tweak the xpath
	*/
	boolean isPlugin = plugin.contains("/plugins/");

	String pluginFile = FileUtils.basename(plugin,".jar");

	Pattern p = Pattern.compile("_\\d*\\.");

	String[] bits = p.split(pluginFile);

	//System.out.println(file.substring(0, bits[0].length()) + " / " + file.substring(bits[0].length() + 1 , file.length()));

	int versionSplitUnderscore = bits[0].length();

	String[] artifactBits = new String[2];

	artifactBits[0] = pluginFile.substring(0,versionSplitUnderscore);
	artifactBits[1] = pluginFile.substring(versionSplitUnderscore + 1, pluginFile.length());

	getLog().info(" Artifact: " + artifactBits[0] + " / Version: " + artifactBits[1] + " / isPlugin: " + isPlugin );

	File inFile = new File(plugin);
	String inFileSize = Long.toString(inFile.length());

	int count = 0;
	byte[] buffer = new byte[1024 * 16];
	InputStream in = new FileInputStream(inFile);
	MessageDigest md = MessageDigest.getInstance("MD5");

	while ((count = in.read(buffer)) > 0)
	{
	md.update(buffer,0,count);
	}
	in.close();

	String inFileMD5 = convert(md.digest());// (new BigInteger(1, md.digest())).toString(16);

	DocumentBuilder builder = DocumentBuilderFactory.newInstance().newDocumentBuilder();
	Document document = builder.parse(new File(artifactsXml));

	String expr;
	XPath xpath = XPathFactory.newInstance().newXPath();

	if ( isPlugin )
	{
	expr = "/repository/artifacts//artifact[@id='" + artifactBits[0] + "' and @version='" + artifactBits[1] + "' and @classifier='osgi.bundle']/properties//property[@name='artifact.size']/@value";
	}
	else
	{
	expr = "/repository/artifacts//artifact[@id='" + artifactBits[0] + "' and @version='" + artifactBits[1] + "' and @classifier='org.eclipse.update.feature']/properties//property[@name='artifact.size']/@value";
	}
	Node artifactSize = (Node)xpath.evaluate(expr,document,XPathConstants.NODE);
	if (artifactSize != null)
	{
	artifactSize.setNodeValue(inFileSize);
	}

	if (isPlugin)
	{
	expr = "/repository/artifacts//artifact[@id='" + artifactBits[0] + "' and @version='" + artifactBits[1] + "' and @classifier='osgi.bundle']/properties//property[@name='download.size']/@value";
	}
	else
	{
	expr = "/repository/artifacts//artifact[@id='" + artifactBits[0] + "' and @version='" + artifactBits[1] + "' and @classifier='org.eclipse.update.feature']/properties//property[@name='download.size']/@value";
	}

	Node downloadSize = (Node)xpath.evaluate(expr,document,XPathConstants.NODE);
	if (downloadSize != null)
	{
	downloadSize.setNodeValue(inFileSize);
	}

	if ( isPlugin )
	{
	expr = "/repository/artifacts//artifact[@id='" + artifactBits[0] + "' and @version='" + artifactBits[1] + "' and @classifier='osgi.bundle']/properties//property[@name='download.md5']/@value";
	}
	else
	{
	expr = "/repository/artifacts//artifact[@id='" + artifactBits[0] + "' and @version='" + artifactBits[1] + "' and @classifier='org.eclipse.update.feature']/properties//property[@name='download.md5']/@value";
	}
	Node downloadMD5 = (Node)xpath.evaluate(expr,document,XPathConstants.NODE);
	if (downloadMD5 != null)
	{
	downloadMD5.setNodeValue(inFileMD5);
	}

	if (FileUtils.fileExists(plugin + ".pack.gz"))
	{
	File packFile = new File(plugin + ".pack.gz");
	String packFileSize = Long.toString(packFile.length());

	expr = "/repository/artifacts";// //artifact[@id='" + artifactBits[0] + "' and @version='" + artifactBits[1] + "']";
	Node normal = (Node)xpath.evaluate(expr,document,XPathConstants.NODE);
	Element packed = document.createElement("artifact");

	packed.setAttribute("classifier", isPlugin ? "osgi.bundle" : "org.eclipse.update.feature");
	packed.setAttribute("id",artifactBits[0]);
	packed.setAttribute("version",artifactBits[1]);

	Element processing = document.createElement("processing");
	processing.setAttribute("size","1");
	packed.appendChild(processing);

	Element step = document.createElement("step");
	step.setAttribute("id","org.eclipse.equinox.p2.processing.Pack200Unpacker");
	step.setAttribute("required","true");
	processing.appendChild(step);

	Element properties = document.createElement("properties");
	properties.setAttribute("size","3");
	packed.appendChild(properties);

	Element prop1 = document.createElement("property");
	prop1.setAttribute("name","artifact.size");
	prop1.setAttribute("value",inFileSize);
	properties.appendChild(prop1);

	Element prop2 = document.createElement("property");
	prop2.setAttribute("name","download.size");
	prop2.setAttribute("value",packFileSize);
	properties.appendChild(prop2);

	Element prop3 = document.createElement("property");
	prop3.setAttribute("name","format");
	prop3.setAttribute("value","packed");
	properties.appendChild(prop3);

	normal.appendChild(packed);

	}

	Transformer txformer = TransformerFactory.newInstance().newTransformer();
	DOMSource src = new DOMSource(document);
	StreamResult res = new StreamResult(artifactsXml);
	txformer.transform(src,res);
	}
	catch (Exception e)
	{
	getLog().error(e);
	}
	}

	/**
	* Creates the extra property and mapping rules for the pack.gz
	*/
	protected void insertPropertyAndMappingRules()
	{
	try
	{
	DocumentBuilder builder = DocumentBuilderFactory.newInstance().newDocumentBuilder();
	Document document = builder.parse(new File(artifactsXml));

	boolean documentWasModified = false;

	{
	//<property name='publishPackFilesAsSiblings' value='true'/>
	String selectPublishPackfilesAsSiblings = "/repository/properties/property[@name='publishPackFilesAsSiblings']";
	XPath xpath = XPathFactory.newInstance().newXPath();
	Element propertyEl = (Element)xpath.evaluate(selectPublishPackfilesAsSiblings,document,XPathConstants.NODE);

	String selectProperties = "/repository/properties";
	xpath = XPathFactory.newInstance().newXPath();
	Element propertiesEl = (Element)xpath.evaluate(selectProperties,document,XPathConstants.NODE);
	if (propertiesEl == null)
	{
	throw new IllegalArgumentException("The artifacts.xml document must have a /repository/properties element.");
	}

	if (propertyEl == null)
	{
	Element publishPackElem = document.createElement("property");
	publishPackElem.setAttribute("name", "publishPackFilesAsSiblings");
	publishPackElem.setAttribute("value", "true");
	propertiesEl.appendChild(publishPackElem);
	documentWasModified = true;
	}
	else
	{
	if (!"true".equals(propertyEl.getAttribute("value")))
	{
	propertyEl.setAttribute("value", "true");
	documentWasModified = true;
	}
	}

	//update the number of properties attribute
	if (documentWasModified)
	{
	int size = propertiesEl.getElementsByTagName("property").getLength();
	propertiesEl.setAttribute("size", String.valueOf(size));
	}
	}//end of properties processor

	{
	//<rule filter='(& (classifier=osgi.bundle) (format=packed))'
	// output='${repoUrl}/plugins/${id}_${version}.jar.pack.gz'/>
	//<rule filter='(& (classifier=org.eclipse.update.feature) (format=packed))'
	// output='${repoUrl}/features/${id}_${version}.jar.pack.gz'/>
	String selectMappings = "/repository/mappings";
	XPath xpath = XPathFactory.newInstance().newXPath();
	Element mappingsEl = (Element)xpath.evaluate(selectMappings,document,XPathConstants.NODE);
	if (mappingsEl == null)
	{
	throw new IllegalArgumentException("The artifacts.xml document must have a /repository/mappings element.");
	}

	//Just iterate over the rules elements and look at the value of the attributes.
	boolean foundPackedBundleFilter = false;
	boolean foundPackedFeatureFilter = false;
	NodeList nl = mappingsEl.getChildNodes();
	for (int i = 0; i < nl.getLength(); i++)
	{
	Node c = nl.item(i);
	if (c.getNodeType() == Node.ELEMENT_NODE)
	{
	Element rule = (Element)c;
	String filter = rule.getAttribute("filter");
	if (filter.indexOf("format=packed") != -1)
	{
	if (filter.indexOf("classifier=osgi.bundle") != -1)
	{
	foundPackedBundleFilter = true;
	}
	else if (filter.indexOf("classifier=org.eclipse.update.feature") != -1)
	{
	foundPackedFeatureFilter = true;
	}
	if (foundPackedBundleFilter && foundPackedFeatureFilter)
	{
	break;
	}
	}
	}
	}
	if (!foundPackedBundleFilter)
	{
	Element ruleElem = document.createElement("rule");
	ruleElem.setAttribute("filter", "(& (classifier=osgi.bundle) (format=packed))");
	ruleElem.setAttribute("output", "${repoUrl}/plugins/${id}_${version}.jar.pack.gz");
	// Bug 356931 format=packed must be first rule in mappings
	Node firstRule = mappingsEl.getFirstChild();
	mappingsEl.insertBefore(ruleElem, firstRule);
	documentWasModified = true;
	}
	if (!foundPackedFeatureFilter)
	{
	Element ruleElem = document.createElement("rule");
	ruleElem.setAttribute("filter", "(& (classifier=org.eclipse.update.feature) (format=packed))");
	ruleElem.setAttribute("output", "${repoUrl}/features/${id}_${version}.jar.pack.gz");
	// Bug 356931 format=packed must be first rule in mappings
	Node firstRule = mappingsEl.getFirstChild();
	mappingsEl.insertBefore(ruleElem, firstRule);

	documentWasModified = true;
	}
	//update the number of properties attribute
	if (!foundPackedFeatureFilter \|\| !foundPackedBundleFilter)
	{
	int size = mappingsEl.getElementsByTagName("rule").getLength();
	mappingsEl.setAttribute("size", String.valueOf(size));
	}

	}//end of rules processor

	if (documentWasModified)
	{
	Transformer txformer = TransformerFactory.newInstance().newTransformer();
	DOMSource src = new DOMSource(document);
	StreamResult res = new StreamResult(artifactsXml);
	txformer.transform(src,res);
	}
	}
	catch (Exception e)
	{
	getLog().error(e);
	}

	}

	private String convert(byte[] bytes)
	{
	StringBuffer sb = new StringBuffer();

	for (int i = 0; i < bytes.length; ++i)
	{
	sb.append(Character.forDigit((bytes[i] >> 4) & 0xf,16));
	sb.append(Character.forDigit(bytes[i] & 0xf,16));
	}
	return sb.toString();
	}

	private void info(String log)
	{
	getLog().info("[FIX] " + log);
	}

	public static void main(String[] args ) throws Exception
	{
	String file = "org.eclipse.equinox.server.core_1.1.1.R37x_v20110907-7K7TFBYDzbeA3ypK_98cDL15A4A";
	Pattern p = Pattern.compile("_\\d");

	String[] bits = p.split(file);

	System.out.println(file.substring(0, bits[0].length()) + " / " + file.substring(bits[0].length() + 1 , file.length()));




	}


	}