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.
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.
- computing the difference between two texts.
- 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
- patch and unpatch the text with the given patch
- parsing the unified diff format
- producing human-readable differences
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.
- JDK 1.5 compatibility
- Ant build script
- Generate output in unified diff format (thanks for Bill James)
Just add the code below to your maven dependencies:
<dependency>
<groupId>com.googlecode.java-diff-utils</groupId>
<artifactId>diffutils</artifactId>
<version>1.3.0</version>
</dependency>
And for Ivy:
<dependency org="com.googlecode.java-diff-utils" name="diffutils" rev="1.3.0"/>
- support for inline diffs in output
- helpers for showing side-by-side, line-by-line diffs or text with inter-line and intra-line change highlights
- customization of diff algorithm for better experience while computing diffs between strings (ignoring blank lines or spaces, etc)
- generating output in other formats (not only unified). E.g. CVS.
http://www.adictosaltrabajo.com/tutoriales/tutoriales.php?pagina=CompararFicherosJavaDiffUtils (in Spanish). Thanks Miguel