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/*
 * IzPack - Copyright 2001-2012 Julien Ponge, All Rights Reserved.
 *
 * http://izpack.org/
 * http://izpack.codehaus.org/
 *
 * Copyright 2012 Tim Anderson
 *
 * 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.
 */

package com.izforge.izpack.installer.unpacker;


import java.io.InputStream;

import com.izforge.izpack.api.exception.ResourceException;
import com.izforge.izpack.api.exception.ResourceInterruptedException;
import com.izforge.izpack.api.exception.ResourceNotFoundException;

/**
 * Provides access to installation packs.
 *
 * @author Tim Anderson
 */
public interface PackResources
{

    /**
     * Returns the stream to a pack.
     *
     * @param name the pack name
     * @return a stream to the pack
     * @throws ResourceNotFoundException    if the resource cannot be found
     * @throws ResourceInterruptedException if resource retrieval is interrupted
     * @throws ResourceException            for any other resource error
     */
    InputStream getPackStream(String name);

    /**
     * Returns the stream to a resource.
     *
     * @param name the resource name
     * @return a stream to the resource
     * @throws ResourceNotFoundException    if the resource cannot be found
     * @throws ResourceInterruptedException if resource retrieval is interrupted
     * @throws ResourceException            for any other resource error
     */
    InputStream getInputStream(String name);
}