A Java implementation of CLI where its design document is located in here.
The package is stored under ion-java/ion-java-cli.
Build ion-java-cli. Note that using -f option for ion-java-cli's pom.xml.
$ mvn -f ion-java-cli/pom.xml install
Invoking ion-java-cli-x.y.jar under ion-java-cli/target/ directory.
For example:
java -jar ion-java-cli/target/ion-java-cli-1.0.jar process test_file.ion -f pretty -o output.ion