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There is a newer version: 2.4.0

package walkmc

import walkmc.extensions.*
import walkmc.extensions.numbers.*
import java.io.*
import java.net.*

/**
 * Represents a downloader used to download files from a URL.
 */
object Downloader {
	
	/**
	 * Downloads the file at specified url and returns the file.
	 */
	fun download(url: URL, print: Boolean = false): File {
		val connection = url.openConnection() as HttpURLConnection
		val name = url.file.substring(url.file.lastIndexOf('/') + 1)
		val file = kotlin.io.path.createTempFile(name).toFile()
		
		if (print)
			println("Downloading $name...")
		
		connection.inputStream.buffered().use { input ->
			file.outputStream().buffered().use { output ->
				val copy = (input.copyTo(output) / 1024).spaced()
				
				if (print)
					println("Downloaded $name with $copy kb size")
			}
		}
		
		return file
	}
	
	/**
	 * Downloads the file at specified url and implements inside of the specified folder
	 * and returns the file.
	 */
	fun download(url: URL, to: File, print: Boolean = false): File {
		val name = url.file.substring(url.file.lastIndexOf('/') + 1)
		val file = file(to, name)
		
		if (file.exists()) return file else file.create()
		val connection = url.openConnection() as HttpURLConnection
		
		if (print)
			println("Downloading $name...")
		
		connection.inputStream.buffered().use { input ->
			file.outputStream().buffered().use { output ->
				val copy = (input.copyTo(output) / 1024).spaced()
				
				if (print)
					println("Downloaded $name with $copy kb size")
			}
		}
		
		return file
	}
}