gistfile1.rb

framework 'Cocoa'

url_string = 'http://macruby.icoretech.org/latest'
url        = NSURL.URLWithString(url_string)
req        = NSURLRequest.requestWithURL(url)

def downloadDidBegin(dl_process)
  puts "downloading..."
end

def download(dl_process, decideDestinationWithSuggestedFilename:filename)
  home = NSHomeDirectory()
  path = home.stringByAppendingPathComponent('Desktop').stringByAppendingPathComponent(filename)
  dl_process.setDestination(path, allowOverwrite:true)
end

def download(dl_process, didFailWithError:error)
  error_description = error.localizedDescription
  more_details      = error.userInfo[NSErrorFailingURLStringKey]
  puts "Download failed. #{error_description} - #{more_details}"  
end

def downloadDidFinish(dl_process)
  puts "Download finished!"
  exit
end

file_download = NSURLDownload.alloc.initWithRequest(req, delegate: self)


# keep the run loop running
NSRunLoop.currentRunLoop.runUntilDate(NSDate.distantFuture)