org.apache.commons.jrcs.diff.DeleteDelta Maven / Gradle / Ivy

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A visual diff and merge tool. It is built to be fast with large files and runs on any operating system.
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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 acknowlegement:
 *       "This product includes software developed by the
 *        Apache Software Foundation (http://www.apache.org/)."
 *    Alternately, this acknowlegement may appear in the software itself,
 *    if and wherever such third-party acknowlegements 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
 *    permission of the Apache Group.
 *
 * 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
 * USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
 * 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.commons.jrcs.diff;

import java.util.List;

/**
 * Holds a delete-delta between to revisions of a text.
 *
 * @version $Id: DeleteDelta.java,v 1.4 2003/05/06 19:07:13 juanco Exp $
 * @author Juanco Anez
 * @see Delta
 * @see Diff
 * @see Chunk
 */
public class DeleteDelta
    extends Delta
{
  DeleteDelta()
  {
    super();
  }

  public DeleteDelta(Chunk orig)
  {
    init(orig, null);
  }

  public void verify(List target)
      throws PatchFailedException
  {
    if (!original.verify(target))
    {
      throw new PatchFailedException();
    }
  }

  public void applyTo(List target)
  {
    original.applyDelete(target);
  }

  public void toString(StringBuffer s)
  {
    s.append(original.rangeString());
    s.append("d");
    s.append(revised.rcsto());
    s.append(Diff.NL);
    original.toString(s, "< ", Diff.NL);
  }

  public void toRCSString(StringBuffer s, String EOL)
  {
    s.append("d");
    s.append(original.rcsfrom());
    s.append(" ");
    s.append(original.size());
    s.append(EOL);
  }

  public void accept(RevisionVisitor visitor)
  {
    visitor.visit(this);
  }
}