About

This is a JNA wrapper around the Chroma syntax highlighter. It exposes two highlight methods.

Read the Chroma docs on how to use Chroma https://github.com/alecthomas/chroma.

This exists because there's not a good server side syntax highlighter in Java (that I could find). Chroma is fast and follows the popular pygments python library.

Building

go build -o chroma.so -buildmode=c-shared chroma.go
mvn clean install

Example use

String source = "public class MyClass { public void hello() {} }";
String lexer = "java";
String style = "monokai";
HtmlOptions options = HtmlOptions.builder()
	.withLineNumbers(true)
	.build();

String result = Chroma.highlightAsHtml(source, lexer, style, options);

Developing

Dependencies

Java dependencies are managed with Maven in the pom.xml.

Go dependencies are managed with dep in the Gopkg.toml file and vendor directory.

TODO/Not done

• This is not exported to Maven Central -- You'll need to build it yourself
• I haven't tested it beyond a Mac
• Expose more methods from the Go Chroma library