Copy gradle cache structure into local m2 folder structure

gradle_to_m2.kts

import java.io.File
import java.security.MessageDigest

val gradleBase = System.getenv("HOME") + "/.gradle/caches/modules-2/files-2.1"
val m2Base = System.getenv("HOME") + "/.m2/repository"
fun ByteArray.toHex() = this.map { "%02x".format(it) }.joinToString("")
operator fun File.get(name: String) = File(this, name)

for (groupFolder in File(gradleBase).listFiles().filter { it.isDirectory }) {
	val group = groupFolder.name
	for (artifactFolder in groupFolder.listFiles().filter { it.isDirectory }) {
		val artifact = artifactFolder.name
		for (versionFolder in artifactFolder.listFiles().filter { it.isDirectory }) {
			val version = versionFolder.name

			val m2Folder = "${group.replace('.', '/')}/$artifact/$version"

			val realM2Folder = File(m2Base + "/" + m2Folder)
			realM2Folder.mkdirs()

			for (fileFolder in versionFolder.listFiles().filter { it.isDirectory }) {
				for (fileFile in fileFolder.listFiles().filter { !it.isDirectory }) {
					val fileName = fileFile.name
					val outFile = realM2Folder[fileName]
					print("$outFile...")
					if (!outFile.exists()) {
						val fileData = fileFile.readBytes()
						val sha1 = MessageDigest.getInstance("SHA-1").digest(fileData).toHex()
						outFile.writeBytes(fileData)
						File(outFile.absolutePath + ".sha1").writeText(sha1)
						println("Ok")
					} else {
						println("Exists")
					}
				}
			}
		}
	}
}