package org.neo4j.kernel;
import java.io.File;
import java.util.HashMap;
import java.util.Map;
import java.util.jar.Attributes;
import java.util.jar.JarFile;
import java.util.jar.Manifest;
enum Version
{
VERSION;
private final String title;
private final String vendor;
private final String version;
private final String revision;
@Override
public String toString()
{
if ( title == null )
{
return "Neo4j Kernel, unpackaged version " + getVersion();
}
return title + " " + getVersion();
}
private String getVersion()
{
if ( version == null )
{
return "<unknown>";
}
else if ( version.contains( "SNAPSHOT" ) )
{
return version + " (revision: " + revision + ")";
}
else
{
return version;
}
}
private Version()
{
Package pkg = getClass().getPackage();
this.title = pkg.getImplementationTitle();
this.vendor = pkg.getImplementationVendor();
this.version = pkg.getImplementationVersion();
@SuppressWarnings( "hiding" ) String revision = null;
Manifest manifest = getManifest();
if ( manifest != null )
{
Attributes attr = manifest.getAttributes( pkg.getName().replace(
'.', '/' ) );
if ( attr == null )
{
attr = manifest.getMainAttributes();
}
if ( attr != null )
{
revision = revision(
attr.getValue( "Implementation-Revision" ),
attr.getValue( "Implementation-Revision-Status" ) );
}
}
this.revision = revision;
}
private static String revision( String revision, String status )
{
if ( revision != null )
{
StringBuilder result = new StringBuilder( revision );
if ( status != null )
{
status = mapOf( status ).get( "status" );
if ( status != null )
{
result.append( status );
}
}
return result.toString();
}
return "";
}
private static Map<String, String> mapOf( String string )
{
Map<String, String> result = new HashMap<String, String>();
for ( String part : string.split( ";" ) )
{
int start = part.indexOf( '=' );
if ( start == -1 )
{
result.put( part, "true" );
}
else
{
result.put( part.substring( 0, start ),
part.substring( start + 1 ) );
}
}
return result;
}
private Manifest getManifest()
{
try
{
return new JarFile( new File( getClass().getProtectionDomain()
.getCodeSource().getLocation().toURI() ) ).getManifest();
}
catch ( Exception e )
{
return null;
}
}
public static void main( String[] args )
{
System.out.println( VERSION );
}
static String get()
{
return VERSION.toString();
}
}