/*
 *  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
 *
 *    https://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.grails.web.converters.marshaller.xml;

import java.io.IOException;

import groovy.lang.Writable;
import org.codehaus.groovy.runtime.EncodingGroovyMethods;

import grails.converters.XML;
import org.grails.web.converters.exceptions.ConverterException;
import org.grails.web.converters.marshaller.ObjectMarshaller;

/**
 * @author Siegfried Puchbauer
 * @since 1.1
 */
public class Base64ByteArrayMarshaller implements ObjectMarshaller<XML> {

    public boolean supports(Object object) {
        return object instanceof byte[] || object instanceof Byte[];
    }

    public void marshalObject(Object object, XML xml) throws ConverterException {
        xml.attribute("encoding", "BASE-64");
        xml.chars("");

        Writable w;
        if (object instanceof byte[]) {
            w = EncodingGroovyMethods.encodeBase64((byte[]) object);
        }
        else {
            w = EncodingGroovyMethods.encodeBase64((Byte[]) object);
        }

        try {
            w.writeTo(xml.getStream());
        }
        catch (IOException e) {
            throw new ConverterException(e);
        }
    }
}
