list_filesystem_as_xml.rb

#!/usr/bin/env ruby                                                             
# encoding: utf-8                                                               
#        

require 'rubygems'
require 'rexml/document'
require 'nokogiri'
require 'cobravsmongoose'
require 'json'

#adapated from code provided by Shailendra Kamath (shailendrakamath) on
#https://www.ruby-forum.com/topic/159008

class DirectoryStructure
  @@excludes = ["..","."]
  @@doc = REXML::Document.new %{ <?xml version="1.0" encoding="UTF-8" ?> }

  def self.traverse_directory(root_path)
    @root_path=root_path
    #traverse initial directory structure
    folder = @@doc.add_element( 'rootfs',{'id' => root_path} )

    #call loop_path with root_path and parent_node
    loop_path(root_path,folder)
    #create xml file
    xml = Nokogiri::XML( @@doc.to_s ) do |config| #FIXME, use REXML or Nokogir, not both
      config.noblanks
    end

    return  xml

  end

  def self.loop_path(path,parent_node)
    dir_entries= Dir.entries(path)
    # don't need '.','..'
    dir_entries = dir_entries-['.','..']

    dir_entries.each do | entry |

      fullpath=path+"/"+entry
      shortpath=path.sub(@root_path,"")+"/"+entry

        # check if directory or file
      if File.directory?(fullpath)

        #Folders Loop -------------------------------------------------
        #Gets the directories of the current node.
        #It changes for each recursive call

        folder = parent_node.add_element( 'folder' ,{ 'label' =>entry,
                                                      'mtime' => File.mtime(fullpath),
                                                      'size' => File.size(fullpath),
                                                      'path' =>  shortpath
                                                    } )
        loop_path( fullpath, folder )
      else
        #Files Loop ------------------------------------------------------
        file = parent_node.add_element( 'file' ,{ 'label' =>entry,
                                                  'mtime' => File.mtime(fullpath),
                                                  'size' => File.size(fullpath),
                                                  'path' =>  shortpath
                                                } )
      end


    end

  end


end


xml=DirectoryStructure.traverse_directory("Downloads/pydio-core-6.4.1/conf")

#as suggested by http://stackoverflow.com/a/4819763
puts CobraVsMongoose.xml_to_hash(xml).to_json