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Update license header to Apache-1.1
- Also modernize README.md - DiffNode.java original source: https://github.com/apache/wicket/blob/master/wicket-util/src/main/java/org/apache/wicket/util/diff/myers/DiffNode.java
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‎README.md‎

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# Diff Utils
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Diff Utils library is an OpenSource library for performing the comparison operations between texts: computing diffs, applying patches, generating unified diffs or parsing them, generating diff output for easy future displaying (like side-by-side view) and so on.
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Main reason to build this library was the lack of easy-to-use libraries with all the usual stuff you need while working with diff files. Originally it was inspired by JRCS library and it's nice design of diff module.
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# Main Features
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## Main Features
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* computing the difference between two texts.
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* capable to hand more than plain ASCII. Arrays or List of any type that implements hashCode() and equals() correctly can be subject to differencing using this library
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* patch and unpatch the text with the given patch
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* parsing the unified diff format
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* producing human-readable differences
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# Algorithms
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## Algorithms
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This library implements Myer's diff algorithm. But it can easily replaced by any other which is better for handing your texts. I have plan to add implementation of some in future.
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# Changelog
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## Changelog
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## Version 1.2
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### Version 1.2
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* JDK 1.5 compatibility
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* Ant build script
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* Generate output in unified diff format (thanks for Bill James)
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# To Install
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## To Install
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Just add the code below to your maven dependencies:
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<dependency>
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<groupId>com.googlecode.java-diff-utils</groupId>
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<artifactId>diffutils</artifactId>
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<version>1.3.0</version>
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</dependency>
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```xml
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<dependency>
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<groupId>com.googlecode.java-diff-utils</groupId>
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<artifactId>diffutils</artifactId>
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<version>1.3.0</version>
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</dependency>
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```
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And for Ivy:
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<dependency org="com.googlecode.java-diff-utils" name="diffutils" rev="1.3.0"/>
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```xml
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<dependency org="com.googlecode.java-diff-utils" name="diffutils" rev="1.3.0"/>
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```
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# Coming eventually
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## Coming eventually
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* support for inline diffs in output
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* helpers for showing side-by-side, line-by-line diffs or text with inter-line and intra-line change highlights
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* customization of diff algorithm for better experience while computing diffs between strings (ignoring blank lines or spaces, etc)
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* generating output in other formats (not only unified). E.g. CVS.
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# Tutorials
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## Tutorials
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http://www.adictosaltrabajo.com/tutoriales/tutoriales.php?pagina=CompararFicherosJavaDiffUtils (in Spanish). Thanks Miguel
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## License
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This work is licensed under The Apache Software License, Version 1.1.
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Reason: The code contains work of HP, which contributed it under Apache-1.1.
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[[Example code](https://github.com/apache/wicket/blob/master/wicket-util/src/main/java/org/apache/wicket/util/diff/Delta.java)).
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It was easier to change the license to Apache-1.1 than to contact HP Legal for a code created in 2003 at HP Bristol.

‎build.xml‎

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<?xml version="1.0" encoding="UTF-8"?>
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<!--
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~ SPDX-License-Identifier: Apache-1.1
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~
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~ ====================================================================
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~ The Apache Software License, Version 1.1
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~
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~ Copyright 2010 Dmitry Naumenko (dm.naumenko@gmail.com)
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~ All rights reserved.
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~
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~ Redistribution and use in source and binary forms, with or without
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~ modification, are permitted provided that the following conditions
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~ are met:
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~
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~ 1. Redistributions of source code must retain the above copyright
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~ notice, this list of conditions and the following disclaimer.
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~
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~ 2. Redistributions in binary form must reproduce the above copyright
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~ notice, this list of conditions and the following disclaimer in
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~ the documentation and/or other materials provided with the
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~ distribution.
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~
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~ 3. The end-user documentation included with the redistribution, if
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~ any, must include the following acknowledgement:
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~ "This product includes software developed by the
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~ Apache Software Foundation (http://www.apache.org/)."
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~ Alternately, this acknowledgement may appear in the software itself,
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~ if and wherever such third-party acknowledgements normally appear.
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~
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~ 4. The names "The Jakarta Project", "Commons", and "Apache Software
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~ Foundation" must not be used to endorse or promote products derived
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~ from this software without prior written permission. For written
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~ permission, please contact apache@apache.org.
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~
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~ 5. Products derived from this software may not be called "Apache"
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~ nor may "Apache" appear in their names without prior written
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~ permission of the Apache Software Foundation.
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~
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~ THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESSED OR IMPLIED
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~ WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
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~ OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
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~ DISCLAIMED. IN NO EVENT SHALL THE APACHE SOFTWARE FOUNDATION OR
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~ ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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~ SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
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~ LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
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~ USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
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~ ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
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~ OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
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~ OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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~ SUCH DAMAGE.
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~ ====================================================================
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~
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-->
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<project name="java-diff-utils" default="jar" basedir=".">
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<property name="version" value="1.3.0-SNAPSHOT"/>
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<property name="src.dir" value="src/main/java" />

‎pom.xml‎

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<!--
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~ SPDX-License-Identifier: Apache-1.1
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~
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~ ====================================================================
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~ The Apache Software License, Version 1.1
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~
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~ Copyright 2010 Dmitry Naumenko (dm.naumenko@gmail.com)
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~ All rights reserved.
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~
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~ Redistribution and use in source and binary forms, with or without
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~ modification, are permitted provided that the following conditions
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~ are met:
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~
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~ 1. Redistributions of source code must retain the above copyright
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~ notice, this list of conditions and the following disclaimer.
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~
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~ 2. Redistributions in binary form must reproduce the above copyright
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~ notice, this list of conditions and the following disclaimer in
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~ the documentation and/or other materials provided with the
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~ distribution.
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~
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~ 3. The end-user documentation included with the redistribution, if
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~ any, must include the following acknowledgement:
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~ "This product includes software developed by the
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~ Apache Software Foundation (http://www.apache.org/)."
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~ Alternately, this acknowledgement may appear in the software itself,
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~ if and wherever such third-party acknowledgements normally appear.
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~
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~ 4. The names "The Jakarta Project", "Commons", and "Apache Software
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~ Foundation" must not be used to endorse or promote products derived
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~ from this software without prior written permission. For written
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~ permission, please contact apache@apache.org.
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~
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~ 5. Products derived from this software may not be called "Apache"
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~ nor may "Apache" appear in their names without prior written
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~ permission of the Apache Software Foundation.
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~
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~ THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESSED OR IMPLIED
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~ WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
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~ OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
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~ DISCLAIMED. IN NO EVENT SHALL THE APACHE SOFTWARE FOUNDATION OR
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~ ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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~ SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
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~ LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
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~ USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
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~ ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
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~ OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
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~ OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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~ SUCH DAMAGE.
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~ ====================================================================
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~
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-->
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<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
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xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/maven-v4_0_0.xsd">
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<modelVersion>4.0.0</modelVersion>
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</scm>
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<licenses>
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<license>
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<name>The Apache Software License, Version 2.0</name>
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<url>http://www.apache.org/licenses/LICENSE-2.0.txt</url>
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<name>The Apache Software License, Version 1.1</name>
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<url>http://www.apache.org/licenses/LICENSE-1.1/url>
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<distribution>repo</distribution>
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<comments>A business-friendly OSS license</comments>
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</license>

‎src/main/java/difflib/ChangeDelta.java‎

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/*
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Copyright 2010 Dmitry Naumenko (dm.naumenko@gmail.com)
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Licensed under the Apache License, Version 2.0 (the "License");
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you may not use this file except in compliance with the License.
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You may obtain a copy of the License at
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http://www.apache.org/licenses/LICENSE-2.0
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Unless required by applicable law or agreed to in writing, software
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distributed under the License is distributed on an "AS IS" BASIS,
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WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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See the License for the specific language governing permissions and
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limitations under the License.
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* SPDX-License-Identifier: Apache-1.1
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*
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* ====================================================================
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* The Apache Software License, Version 1.1
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*
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* Copyright (c) 1999-2003 The Apache Software Foundation.
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* Copyright (c) 2010 Dmitry Naumenko (dm.naumenko@gmail.com)
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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*
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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*
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in
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* the documentation and/or other materials provided with the
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* distribution.
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*
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* 3. The end-user documentation included with the redistribution, if
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* any, must include the following acknowledgement:
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* "This product includes software developed by the
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* Apache Software Foundation (http://www.apache.org/)."
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* Alternately, this acknowledgement may appear in the software itself,
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* if and wherever such third-party acknowledgements normally appear.
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*
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* 4. The names "The Jakarta Project", "Commons", and "Apache Software
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* Foundation" must not be used to endorse or promote products derived
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* from this software without prior written permission. For written
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* permission, please contact apache@apache.org.
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*
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* 5. Products derived from this software may not be called "Apache"
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* nor may "Apache" appear in their names without prior written
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* permission of the Apache Software Foundation.
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*
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* THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESSED OR IMPLIED
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* WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
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* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
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* DISCLAIMED. IN NO EVENT SHALL THE APACHE SOFTWARE FOUNDATION OR
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* ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
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* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
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* USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
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* ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
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* OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
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* OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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* ====================================================================
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*
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* This software consists of voluntary contributions made by many
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* individuals on behalf of the Apache Software Foundation. For more
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* information on the Apache Software Foundation, please see
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* <http://www.apache.org/>.
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*/
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package difflib;
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‎src/main/java/difflib/Chunk.java‎

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/*
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Copyright 2010 Dmitry Naumenko (dm.naumenko@gmail.com)
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Licensed under the Apache License, Version 2.0 (the "License");
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you may not use this file except in compliance with the License.
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You may obtain a copy of the License at
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http://www.apache.org/licenses/LICENSE-2.0
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Unless required by applicable law or agreed to in writing, software
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distributed under the License is distributed on an "AS IS" BASIS,
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WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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See the License for the specific language governing permissions and
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limitations under the License.
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* SPDX-License-Identifier: Apache-1.1
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*
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* ====================================================================
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* The Apache Software License, Version 1.1
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*
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* Copyright (c) 1999-2003 The Apache Software Foundation.
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* Copyright (c) 2010 Dmitry Naumenko (dm.naumenko@gmail.com)
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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*
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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*
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in
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* the documentation and/or other materials provided with the
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* distribution.
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*
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* 3. The end-user documentation included with the redistribution, if
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* any, must include the following acknowledgement:
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* "This product includes software developed by the
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* Apache Software Foundation (http://www.apache.org/)."
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* Alternately, this acknowledgement may appear in the software itself,
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* if and wherever such third-party acknowledgements normally appear.
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*
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* 4. The names "The Jakarta Project", "Commons", and "Apache Software
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* Foundation" must not be used to endorse or promote products derived
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* from this software without prior written permission. For written
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* permission, please contact apache@apache.org.
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*
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* 5. Products derived from this software may not be called "Apache"
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* nor may "Apache" appear in their names without prior written
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* permission of the Apache Software Foundation.
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*
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* THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESSED OR IMPLIED
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* WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
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* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
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* DISCLAIMED. IN NO EVENT SHALL THE APACHE SOFTWARE FOUNDATION OR
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* ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
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* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
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* USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
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* ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
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* OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
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* OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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* ====================================================================
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*
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* This software consists of voluntary contributions made by many
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* individuals on behalf of the Apache Software Foundation. For more
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* information on the Apache Software Foundation, please see
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* <http://www.apache.org/>.
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*/
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package difflib;
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