IronShay

Ironing code, geek t-shirts and even presentations!

NAVIGATION - SEARCH

Why IronRuby is AWSOME!

Yesterday I had to detach a folder from the SVN supervision. In order to do that, one needs to delete the .svn folders within the folder and its subfolders.
I decided to take advantage of IronRuby for that matter.

The problem I ran into with this one was that the files on the .svn folder were read-only. This means that in order to delete the folder, I first have to loop over all the files and remove their read-only attribute. I searched the net for a way to do that without such a loop and found a solution that used a WMI request.

IronRuby lets me take the benefit of the great System.Management class and use it in a Ruby script that I can write in no time.

Here is the code that I've ended up with:

____________________________________________________________________________________
require 'mscorlib'
require 'System.Management, Version=2.0.0.0, Culture=neutral, PublicKeyToken=b03f5f7f11d50a3a'

def RemoveSvnFromDir(path)
    # loop over the files in the given path
    Dir.foreach(path) do |filename|
        current_dir = path + "\\" + filename

        # Ignore dot and double-dot.
        next if filename == "." || filename == ".."

        # If the file is the svn folder, remove it using WMI (no need to reset the read-only attributes)
        if filename == ".svn"
            begin
                puts "Removing #{current_dir}"
                dir = System::Management::ManagementObject.new("win32_Directory.Name='#{current_dir}'")
                dir.Get();
                dir.InvokeMethod("Delete", nil,nil);                
            rescue Exception => e
                puts e.to_s
            end
            next
        end
       
        # If this is a folder, recourse into it and detach it from SVN as well
        if File.directory?(current_dir)
            RemoveSvnFromDir(current_dir)
        end
    end
end

# Get the path from the command line and execute
dir_name = ARGV[0]
puts "Detaching SVN from #{dir_name}"
RemoveSvnFromDir(dir_name)
____________________________________________________________________________________

In order to run it, all that is needed is to open cmd and write "ir SVNCleaner.rb c:\MyCodeDirectory" (assuming that the script file is named SVNCleaner.rb).

This is just a small example of the great power that uniting .Net and dynamic languages can unleash, get ready for more!

Happy Succoth!
Shay.

Pingbacks and trackbacks (3)+

Add comment