001/* 002 * ==================================================================== 003 * 004 * The Apache Software License, Version 1.1 005 * 006 * Copyright (c) 1999-2003 The Apache Software Foundation. 007 * All rights reserved. 008 * 009 * Redistribution and use in source and binary forms, with or without 010 * modification, are permitted provided that the following conditions 011 * are met: 012 * 013 * 1. Redistributions of source code must retain the above copyright 014 * notice, this list of conditions and the following disclaimer. 015 * 016 * 2. Redistributions in binary form must reproduce the above copyright 017 * notice, this list of conditions and the following disclaimer in 018 * the documentation and/or other materials provided with the 019 * distribution. 020 * 021 * 3. The end-user documentation included with the redistribution, if 022 * any, must include the following acknowledgement: 023 * "This product includes software developed by the 024 * Apache Software Foundation (http://www.apache.org/)." 025 * Alternately, this acknowledgement may appear in the software itself, 026 * if and wherever such third-party acknowledgements normally appear. 027 * 028 * 4. The names "The Jakarta Project", "Commons", and "Apache Software 029 * Foundation" must not be used to endorse or promote products derived 030 * from this software without prior written permission. For written 031 * permission, please contact apache@apache.org. 032 * 033 * 5. Products derived from this software may not be called "Apache" 034 * nor may "Apache" appear in their names without prior written 035 * permission of the Apache Software Foundation. 036 * 037 * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESSED OR IMPLIED 038 * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 039 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE 040 * DISCLAIMED. IN NO EVENT SHALL THE APACHE SOFTWARE FOUNDATION OR 041 * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, 042 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT 043 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF 044 * USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND 045 * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, 046 * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT 047 * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 048 * SUCH DAMAGE. 049 * ==================================================================== 050 * 051 * This software consists of voluntary contributions made by many 052 * individuals on behalf of the Apache Software Foundation. For more 053 * information on the Apache Software Foundation, please see 054 * <http://www.apache.org/>. 055 * 056 */ 057 058package org.apache.wicket.util.diff; 059 060import java.util.List; 061 062/** 063 * Holds an change-delta between to revisions of a text. 064 * 065 * @version $Id: ChangeDelta.java,v 1.1 2006/03/12 00:24:21 juanca Exp $ 066 * @author <a href="mailto:juanco@suigeneris.org">Juanco Anez</a> 067 * @see Delta 068 * @see Diff 069 * @see Chunk 070 */ 071public class ChangeDelta extends Delta 072{ 073 074 ChangeDelta() 075 { 076 super(); 077 } 078 079 /** 080 * Construct. 081 * 082 * @param orig 083 * @param rev 084 */ 085 public ChangeDelta(final Chunk orig, final Chunk rev) 086 { 087 init(orig, rev); 088 } 089 090 @Override 091 public void verify(final List<Object> target) throws PatchFailedException 092 { 093 if (!original.verify(target)) 094 { 095 throw new PatchFailedException(); 096 } 097 if (original.first() > target.size()) 098 { 099 throw new PatchFailedException("original.first() > target.size()"); 100 } 101 } 102 103 @Override 104 public void applyTo(final List<Object> target) 105 { 106 original.applyDelete(target); 107 revised.applyAdd(original.first(), target); 108 } 109 110 @Override 111 public void toString(final StringBuilder s) 112 { 113 original.rangeString(s); 114 s.append("c"); 115 revised.rangeString(s); 116 s.append(Diff.NL); 117 original.toString(s, "< ", "\n"); 118 s.append("---"); 119 s.append(Diff.NL); 120 revised.toString(s, "> ", "\n"); 121 } 122 123 @Override 124 public void toRCSString(final StringBuilder s, final String EOL) 125 { 126 s.append("d"); 127 s.append(original.rcsfrom()); 128 s.append(" "); 129 s.append(original.size()); 130 s.append(EOL); 131 s.append("a"); 132 s.append(original.rcsto()); 133 s.append(" "); 134 s.append(revised.size()); 135 s.append(EOL); 136 revised.toString(s, "", EOL); 137 } 138 139 @Override 140 public void accept(final RevisionVisitor visitor) 141 { 142 visitor.visit(this); 143 } 144}