build.gradle

ant.importBuild('java/build.xml') { 
	antTargetName -> antTargetName + '_tweenengine'
}

task mvn_install_tweenengine(dependsOn: package_tweenengine){
	ext.mvn_dir = project.hasProperty('mvn_dir') ? project.getProperty('mvn_dir') : projectDir //Default setting assumes that maven is added to your path
	
	doLast {
		exec{
			def api_dir = ant.properties['api.dir']
			def api_name = ant.properties['api.name']
			
			def version = ant.properties['version']
			
			def cmdline = 'install:install-file -Dfile=' + projectDir + '/java/build/' + api_dir + '/' + api_name + '.jar -DgroupId=com.aurelienribon -DartifactId=' + api_name + ' -Dversion=' + version + ' -Dpackaging=jar'
		
			workingDir = mvn_dir
			if (System.getProperty('os.name').toLowerCase(Locale.ROOT).contains('windows')) {
				commandLine 'cmd', '/c', 'mvn.cmd ' + cmdline
			} else {
				commandLine 'mvn ' + cmdline
			} 
		}
	}
}

defaultTasks 'mvn_install_tweenengine'