Voice notification when when Gradle build finishes (for Mac OS X)

speak.gradle

// When runnning a Gradle build in the background, it is convenient to be notified immediately 
// via voice once the build has finished - without having to actively switch windows to find out - 
// and being told the actual exception in case of a build failure.

// Put this file into the folder ~/.gradle/init.d to enable the acoustic notifications for all builds

gradle.addBuildListener(new BuildAdapter() {
    
    @Override
    void buildFinished(BuildResult result) {
        def projectName = gradle.rootProject.name
        if (result.failure) {
            playSound('Submarine.aiff')
            def e = getExceptionParts(result)
            "say '$projectName build failed: ${e.first} ${e.second}.'".execute()
        } else {
            if (projectName != "buildSrc") {
                playSound('Glass.aiff')
                "say '$projectName build successful.'".execute()
            }
        }
    }

    private Tuple2<String, String> getExceptionParts(BuildResult result) {
        def exception = result.failure
        if (exception.cause != null) {
            exception = exception.cause
        }
        def className = exception.class.simpleName
        def of = className.indexOf('Exception')
        new Tuple2<String, String>(className.substring(0, of), className.substring(of))
    }

    private void playSound(def sound) {
        "afplay /System/Library/Sounds/$sound".execute()
        sleep(100)
    }
    
})