/*
 *  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.myfaces.buildtools.maven2.plugin.javascript.jmt.assembler;

import java.io.File;

import org.codehaus.plexus.PlexusConstants;
import org.codehaus.plexus.PlexusContainer;
import org.codehaus.plexus.component.repository.exception.ComponentLookupException;
import org.codehaus.plexus.context.Context;
import org.codehaus.plexus.context.ContextException;
import org.codehaus.plexus.personality.plexus.lifecycle.phase.Contextualizable;
import org.codehaus.plexus.util.FileUtils;

/**
 * @author <a href="mailto:nicolas@apache.org">Nicolas De Loof</a>
 */
public class DefaultAssemblerReaderManager
    implements AssemblerReaderManager, Contextualizable
{
    private PlexusContainer container;

    public void contextualize( Context context )
        throws ContextException
    {
        container = (PlexusContainer) context.get( PlexusConstants.PLEXUS_KEY );
    }

    /**
     * {@inheritDoc}
     * 
     * @see org.codehaus.mojo.javascript.assembler.AssemblerReaderManager#getAssemblerReader(java.io.File)
     */
    public AssemblerReader getAssemblerReader( File file )
        throws NoSuchAssemblerReaderException
    {
        String ext = FileUtils.getExtension( file.getName() ).toLowerCase();
        if ( "xml".equals( ext ) )
        {
            return getAssemblerReader( "default" );
        }
        return getAssemblerReader( ext );
    }

    /**
     * {@inheritDoc}
     * 
     * @see org.codehaus.mojo.javascript.assembler.AssemblerReaderManager#getAssemblerReader(java.lang.String)
     */
    public AssemblerReader getAssemblerReader( String name )
        throws NoSuchAssemblerReaderException
    {
        try
        {
            return (AssemblerReader) container.lookup( AssemblerReader.ROLE, name );
        }
        catch ( ComponentLookupException e )
        {
            throw new NoSuchAssemblerReaderException( name );
        }
    }
}