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/*
* ====================================================================
*
* The Apache Software License, Version 1.1
*
* Copyright (c) 1999-2003 The Apache Software Foundation.
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
*
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
*
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in
* the documentation and/or other materials provided with the
* distribution.
*
* 3. The end-user documentation included with the redistribution, if
* any, must include the following acknowledgement:
* "This product includes software developed by the
* Apache Software Foundation (http://www.apache.org/)."
* Alternately, this acknowledgement may appear in the software itself,
* if and wherever such third-party acknowledgements normally appear.
*
* 4. The names "The Jakarta Project", "Commons", and "Apache Software
* Foundation" must not be used to endorse or promote products derived
* from this software without prior written permission. For written
* permission, please contact [email protected].
*
* 5. Products derived from this software may not be called "Apache"
* nor may "Apache" appear in their names without prior written
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*
* THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESSED OR IMPLIED
* WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
* DISCLAIMED. IN NO EVENT SHALL THE APACHE SOFTWARE FOUNDATION OR
* ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
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* ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
* OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
* OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
* ====================================================================
*
* This software consists of voluntary contributions made by many
* individuals on behalf of the Apache Software Foundation. For more
* information on the Apache Software Foundation, please see
* .
*
*/
package org.apache.wicket.util.diff;
import java.util.ArrayList;
import java.util.Arrays;
import java.util.LinkedList;
import java.util.List;
import java.util.ListIterator;
/**
* A Revision holds the series of deltas that describe the differences between two sequences.
*
* @version $Revision: 1.1 $ $Date: 2006/03/12 00:24:21 $
*
* @author Juanco Anez
* @author Brian McBride
*
* @see Delta
* @see Diff
* @see Chunk
* @see Revision modifications 27 Apr 2003 bwm
*
* Added visitor pattern Visitor interface and accept() method.
*/
public class Revision extends ToString
{
List deltas_ = new LinkedList<>();
/**
* Creates an empty Revision.
*/
public Revision()
{
}
/**
* Adds a delta to this revision.
*
* @param delta
* the {@link Delta Delta} to add.
*/
public synchronized void addDelta(final Delta delta)
{
if (delta == null)
{
throw new IllegalArgumentException("new delta is null");
}
deltas_.add(delta);
}
/**
* Adds a delta to the start of this revision.
*
* @param delta
* the {@link Delta Delta} to add.
*/
public synchronized void insertDelta(final Delta delta)
{
if (delta == null)
{
throw new IllegalArgumentException("new delta is null");
}
deltas_.add(0, delta);
}
/**
* Retrieves a delta from this revision by position.
*
* @param i
* the position of the delta to retrieve.
* @return the specified delta
*/
public Delta getDelta(final int i)
{
return deltas_.get(i);
}
/**
* Returns the number of deltas in this revision.
*
* @return the number of deltas.
*/
public int size()
{
return deltas_.size();
}
/**
* Applies the series of deltas in this revision as patches to the given text.
*
* @param src
* the text to patch, which the method doesn't change.
* @return the resulting text after the patches have been applied.
* @throws PatchFailedException
* if any of the patches cannot be applied.
*/
public Object[] patch(final Object[] src) throws PatchFailedException
{
List
