/*
 *  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.ant.compress.util;

import java.io.InputStream;
import java.io.IOException;
import java.io.OutputStream;

import org.apache.commons.compress.archivers.ArchiveException;
import org.apache.commons.compress.archivers.ArchiveInputStream;
import org.apache.commons.compress.archivers.ArchiveOutputStream;
import org.apache.commons.compress.archivers.arj.ArjArchiveInputStream;
import org.apache.tools.ant.BuildException;

/**
 * @since Apache Compress Antlib 1.3
 */
public class ArjStreamFactory implements ArchiveStreamFactory {

    /**
     * @param stream the stream to read from, should be buffered
     * @param encoding the encoding of the entry names
     */
    @Override
    public ArchiveInputStream getArchiveStream(InputStream stream,
                                               String encoding)
        throws IOException {
        try {
            return new ArjArchiveInputStream(stream, encoding);
        } catch (ArchiveException ex) {
            throw new BuildException(ex);
        }
    }

    /**
     * Not implemented.
     */
    @Override
    public ArchiveOutputStream getArchiveStream(OutputStream stream,
                                                String encoding)
        throws IOException {
        throw new UnsupportedOperationException();
    }
}