/*
 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS HEADER.
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 * Copyright 1997-2007 Sun Microsystems, Inc. All rights reserved.
 * 
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 * and Distribution License("CDDL") (collectively, the "License").  You
 * may not use this file except in compliance with the License. You can obtain
 * a copy of the License at https://glassfish.dev.java.net/public/CDDL+GPL.html
 * or glassfish/bootstrap/legal/LICENSE.txt.  See the License for the specific
 * language governing permissions and limitations under the License.
 * 
 * When distributing the software, include this License Header Notice in each
 * file and include the License file at glassfish/bootstrap/legal/LICENSE.txt.
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 * Header, with the fields enclosed by brackets [] replaced by your own
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package com.sun.enterprise.cli.framework;

import java.io.Writer;
import java.io.Reader;
import java.io.OutputStreamWriter;
import java.io.InputStreamReader;
import java.io.IOException;
import java.io.FileReader;
import java.io.FileNotFoundException;
import java.io.BufferedWriter;
import java.io.BufferedReader;


/**
 * More.java
 *
 * @author <a href="mailto:toby.h.ferguson@sun.com">Toby H Ferguson</a>
 * @version $Revision: 1.4 $
 *
 * This class provides a primitive more(1) functionality, paging
 * through the given file, with an optional pagelength.
 */

public class More 
{
  public More(int linesPerPage,
			  Reader src,
			  Writer dest,
			  Reader fromUser,
			  Writer toUser,
			  String promptChar,
			  String prompt) throws IOException {

	loopUntilQuit(new User(fromUser, toUser, promptChar, prompt),
				  new Pager(linesPerPage, src, dest));
  }

  private void loopUntilQuit(User user, Pager pager) throws IOException {
	do {
	  pager.nextPage();
	} while (pager.hasNext() && user.wantsToContinue());
  }
    

}