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Getting Started
GumTree requires Java 1.8 to run. Also we use Gradle to manage the dependencies and the build of GumTree. We therefore recommend also to have Gradle.
- You have to install srcML if you want to analyze C++ and C# code
- You have to install cgum, if you want to analyze C code
Both tools have to be available in your system's path.
You can build GumTree with the following commands:
git clone https://github.com/GumTreeDiff/gumtree.git
cd gumtree
./gradlew build -x test
You will have a zip distribution of GumTree in the dist/build/distributions folder. The gumtree binary is located in the bin folder contained in this archive.
- Instead of
./gradlew build -x test, rungradlew.bat build -x test - If you get an
The input line is too long. The syntax of the command is incorrect.error when trying to rungumtree.bat, then you've just bumped into a Gradle issue, see comments from there for possible workarounds.
GumTree's Maven modules are available here: http://mvnrepository.com/artifact/com.github.gumtreediff.
You can also download the nightly version on Bintray.
You can unzip the archive previously described, and just run the gumtree binary suited to your system. The gumtree binary takes a command as first parameter. For instance gumtree webdiff file1.java file2.java will perform a diff and will display it in a browser.
The class containing the main method to run GumTree is fr.labri.gumtree.client.Run. You can run this class without parameters to find out the available commands. Note that if you want to have all available commands and parsers at your disposal, you need to set up the classpath to include the projects of the gumtree distribution.
For instance, the arguments webdiff file1.java file2.java will compute the diff between file1.java and file2.java, and launch a local web server that will show you the output of the diff. This server is accessible via the URL http://localhost:4567/.