helper.gradle

import java.text.MessageFormat

ext.dlDeps = {
	def dlDeps, File dlDepsDir ->
		def dlDepsNames = new HashSet<String>()
		dlDeps.each({
			String dlDepUrl = it[0]
			File dlDepFile = new File(dlDepsDir, it[1])
			dlDepsNames.add(dlDepFile.getName())
			if (!dlDepFile.exists()) {
				logger.lifecycle(MessageFormat.format("Downloading {0} from {1}", dlDepFile.getName(), dlDepUrl))
				ant.get(src: dlDepUrl, dest: dlDepFile)
			} else {
				logger.lifecycle(MessageFormat.format("Skipping download of {0} because it already exists", dlDepFile.getName()))
			}
		})
		dlDepsDir.listFiles().findAll({ !dlDepsNames.contains(it.getName()) }).each({
			logger.lifecycle(MessageFormat.format("Deleting old dllib {0}", it.getName()))
			it.delete()
		})
}