/*
 *  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 java.io.FileReader;

import org.apache.maven.plugin.MojoExecutionException;
import org.apache.myfaces.buildtools.maven2.plugin.javascript.jmt.assembler.io.xpp3.AssemblerXpp3Reader;
import org.codehaus.plexus.logging.LogEnabled;
import org.codehaus.plexus.logging.Logger;

/**
 * @author <a href="mailto:nicolas@apache.org">Nicolas De Loof</a>
 */
public class DefaultAssemblerReader
    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;
    }

    /**
     * {@inheritDoc}
     * 
     * @see org.codehaus.mojo.javascript.assembler.AssemblerReader#getAssembler(java.io.File)
     */
    public Assembler getAssembler( File file )
        throws Exception
    {
        AssemblerXpp3Reader reader = new AssemblerXpp3Reader();
        try
        {
            logger.info( "Reading assembler descriptor " + file.getAbsolutePath() );
            return reader.read( new FileReader( file ) );
        }
        catch ( Exception e )
        {
            throw new MojoExecutionException( "Failed to read the script assembler descriptor", e );
        }
    }
}