/*
* 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.maven.shared.osgi;
import java.io.File;
import java.io.IOException;
import java.util.Enumeration;
import java.util.HashSet;
import java.util.Iterator;
import java.util.Map;
import java.util.Set;
import java.util.jar.JarFile;
import java.util.regex.Matcher;
import java.util.regex.Pattern;
import java.util.zip.ZipEntry;
import org.apache.maven.artifact.Artifact;
import aQute.bnd.osgi.Analyzer;
/**
* Default implementation of {@link Maven2OsgiConverter}
*
* @plexus.component
*
* @author <a href="mailto:carlos@apache.org">Carlos Sanchez</a>
* @version $Id: DefaultMaven2OsgiConverter.java 661727 2008-05-30 14:21:49Z bentmann $
*/
public class DefaultMaven2OsgiConverter implements Maven2OsgiConverter
{
private static final String FILE_SEPARATOR = System.getProperty( "file.separator" );
private String getBundleSymbolicName( String groupId, String artifactId )
{
return groupId + "." + artifactId;
}
/**
* Get the symbolic name as groupId + "." + artifactId, with the following exceptions
* <ul>
* <li>if artifact.getFile is not null and the jar contains a OSGi Manifest with
* Bundle-SymbolicName property then that value is returned</li>
* <li>if groupId has only one section (no dots) and artifact.getFile is not null then the
* first package name with classes is returned. eg. commons-logging:commons-logging ->
* org.apache.commons.logging</li>
* <li>if artifactId is equal to last section of groupId then groupId is returned. eg.
* org.apache.maven:maven -> org.apache.maven</li>
* <li>if artifactId starts with last section of groupId that portion is removed. eg.
* org.apache.maven:maven-core -> org.apache.maven.core</li>
* <li>if artifactId starts with groupId then the artifactId is removed. eg.
* org.apache:org.apache.maven.core -> org.apache.maven.core</li>
* </ul>
*/
public String getBundleSymbolicName( Artifact artifact )
{
if ( ( artifact.getFile() != null ) && artifact.getFile().isFile() )
{
Analyzer analyzer = new Analyzer();
JarFile jar = null;
try
{
jar = new JarFile( artifact.getFile(), false );
if ( jar.getManifest() != null )
{
String symbolicNameAttribute = jar.getManifest().getMainAttributes()
.getValue( Analyzer.BUNDLE_SYMBOLICNAME );
Map bundleSymbolicNameHeader = analyzer.parseHeader( symbolicNameAttribute );
Iterator it = bundleSymbolicNameHeader.keySet().iterator();
if ( it.hasNext() )
{
return ( String ) it.next();
}
}
}
catch ( IOException e )
{
throw new ManifestReadingException( "Error reading manifest in jar "
+ artifact.getFile().getAbsolutePath(), e );
}
finally
{
if ( jar != null )
{
try
{
jar.close();
}
catch ( IOException e )
{
}
}
}
}
int i = artifact.getGroupId().lastIndexOf( '.' );
if ( ( i < 0 ) && ( artifact.getFile() != null ) && artifact.getFile().isFile() )
{
String groupIdFromPackage = getGroupIdFromPackage( artifact.getFile() );
if ( groupIdFromPackage != null )
{
return groupIdFromPackage;
}
}
String lastSection = artifact.getGroupId().substring( ++i );
if ( artifact.getArtifactId().equals( lastSection ) )
{
return artifact.getGroupId();
}
if ( artifact.getArtifactId().equals( artifact.getGroupId() )
|| artifact.getArtifactId().startsWith( artifact.getGroupId() + "." ) )
{
return artifact.getArtifactId();
}
if ( artifact.getArtifactId().startsWith( lastSection ) )
{
String artifactId = artifact.getArtifactId().substring( lastSection.length() );
if ( Character.isLetterOrDigit( artifactId.charAt( 0 ) ) )
{
return getBundleSymbolicName( artifact.getGroupId(), artifactId );
}
else
{
return getBundleSymbolicName( artifact.getGroupId(), artifactId.substring( 1 ) );
}
}
return getBundleSymbolicName( artifact.getGroupId(), artifact.getArtifactId() );
}
private String getGroupIdFromPackage( File artifactFile )
{
try
{
/* get package names from jar */
Set packageNames = new HashSet();
JarFile jar = new JarFile( artifactFile, false );
Enumeration entries = jar.entries();
while ( entries.hasMoreElements() )
{
ZipEntry entry = ( ZipEntry ) entries.nextElement();
if ( entry.getName().endsWith( ".class" ) )
{
File f = new File( entry.getName() );
String packageName = f.getParent();
if ( packageName != null )
{
packageNames.add( packageName );
}
}
}
jar.close();
/* find the top package */
String[] groupIdSections = null;
for ( Iterator it = packageNames.iterator(); it.hasNext(); )
{
String packageName = ( String ) it.next();
String[] packageNameSections = packageName.split( "\\" + FILE_SEPARATOR );
if ( groupIdSections == null )
{
/* first candidate */
groupIdSections = packageNameSections;
}
else
// if ( packageNameSections.length < groupIdSections.length )
{
/*
* find the common portion of current package and previous selected groupId
*/
int i;
for ( i = 0; ( i < packageNameSections.length ) && ( i < groupIdSections.length ); i++ )
{
if ( !packageNameSections[i].equals( groupIdSections[i] ) )
{
break;
}
}
groupIdSections = new String[i];
System.arraycopy( packageNameSections, 0, groupIdSections, 0, i );
}
}
if ( ( groupIdSections == null ) || ( groupIdSections.length == 0 ) )
{
return null;
}
/* only one section as id doesn't seem enough, so ignore it */
if ( groupIdSections.length == 1 )
{
return null;
}
StringBuffer sb = new StringBuffer();
for ( int i = 0; i < groupIdSections.length; i++ )
{
sb.append( groupIdSections[i] );
if ( i < groupIdSections.length - 1 )
{
sb.append( '.' );
}
}
return sb.toString();
}
catch ( IOException e )
{
/* we took all the precautions to avoid this */
throw new RuntimeException( e );
}
}
public String getBundleFileName( Artifact artifact )
{
return getBundleSymbolicName( artifact ) + "_" + getVersion( artifact.getVersion() ) + ".jar";
}
public String getVersion( Artifact artifact )
{
return getVersion( artifact.getVersion() );
}
public String getVersion( String version )
{
return cleanupVersion( version );
}
/**
* Clean up version parameters. Other builders use more fuzzy definitions of
* the version syntax. This method cleans up such a version to match an OSGi
* version.
*
* @param VERSION_STRING
* @return
*/
static final Pattern FUZZY_VERSION = Pattern.compile( "(\\d+)(\\.(\\d+)(\\.(\\d+))?)?([^a-zA-Z0-9](.*))?",
Pattern.DOTALL );
static public String cleanupVersion( String version )
{
StringBuffer result = new StringBuffer();
Matcher m = FUZZY_VERSION.matcher( version );
if ( m.matches() )
{
String major = m.group( 1 );
String minor = m.group( 3 );
String micro = m.group( 5 );
String qualifier = m.group( 7 );
if ( major != null )
{
result.append( major );
if ( minor != null )
{
result.append( "." );
result.append( minor );
if ( micro != null )
{
result.append( "." );
result.append( micro );
if ( qualifier != null )
{
result.append( "." );
cleanupModifier( result, qualifier );
}
}
else if ( qualifier != null )
{
result.append( ".0." );
cleanupModifier( result, qualifier );
}
else
{
result.append( ".0" );
}
}
else if ( qualifier != null )
{
result.append( ".0.0." );
cleanupModifier( result, qualifier );
}
else
{
result.append( ".0.0" );
}
}
}
else
{
result.append( "0.0.0." );
cleanupModifier( result, version );
}
return result.toString();
}
static void cleanupModifier( StringBuffer result, String modifier )
{
for ( int i = 0; i < modifier.length(); i++ )
{
char c = modifier.charAt( i );
if ( ( c >= '0' && c <= '9' ) || ( c >= 'a' && c <= 'z' ) || ( c >= 'A' && c <= 'Z' ) || c == '_'
|| c == '-' )
result.append( c );
else
result.append( '_' );
}
}
}