package org.codehaus.mojo.javascript.assembler;
/*
* Copyright 2001-2005 The Apache Software Foundation.
*
* Licensed 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.
*/
import java.io.File;
import java.util.Iterator;
import java.util.List;
import javax.xml.parsers.DocumentBuilder;
import javax.xml.parsers.DocumentBuilderFactory;
import org.apache.commons.jxpath.JXPathContext;
import org.codehaus.plexus.logging.LogEnabled;
import org.codehaus.plexus.logging.Logger;
import org.w3c.dom.Document;
import org.w3c.dom.Node;
/**
* @author <a href="mailto:nicolas@apache.org">Nicolas De Loof</a>
*/
public class JsBuilderAssemblerReader
implements AssemblerReader, LogEnabled
{
private Logger logger;
/**
* {@inheritDoc}
*
* @see org.codehaus.plexus.logging.LogEnabled#enableLogging(org.codehaus.plexus.logging.Logger)
*/
public void enableLogging( Logger logger )
{
this.logger = logger;
}
private static final String OUTPUT = "$output/";
/**
* {@inheritDoc}
*
* @see org.codehaus.mojo.javascript.assembler.AssemblerReader#getAssembler(java.io.File)
*/
public Assembler getAssembler( File file )
throws Exception
{
logger.info( "Reading assembler descriptor " + file.getAbsolutePath() );
DocumentBuilder builder = DocumentBuilderFactory.newInstance().newDocumentBuilder();
Document dom = builder.parse( file );
Assembler assembler = new Assembler();
JXPathContext xpath = JXPathContext.newContext( dom );
xpath.setLenient( true );
String src = (String) xpath.getValue( "//directory/@name" );
List nodes = xpath.selectNodes( "//target" );
for ( Iterator iterator = nodes.iterator(); iterator.hasNext(); )
{
Node node = (Node) iterator.next();
Script script = new Script();
assembler.addScript( script );
JXPathContext nodeContext = JXPathContext.newContext( node );
String fileName = (String) nodeContext.getValue( "@file" );
fileName = fileName.replace( '\\', '/' );
if ( fileName.startsWith( OUTPUT ) )
{
fileName = fileName.substring( OUTPUT.length() );
}
script.setFileName( fileName );
for ( Iterator iter = nodeContext.iterate( "//include/@name" ); iter.hasNext(); )
{
String include = ( (String) iter.next() ).replace( '\\', '/' );
if ( src != null && src.length() > 0 )
{
include = include.substring( src.length() + 1 );
}
script.addInclude( include );
}
}
return assembler;
}
}