Module: HashUtilsXML

Included in:
Array, Hash
Defined in:
lib/hashutils.rb

Instance Method Summary collapse

Instance Method Details

#from_xml(element) ⇒ Object

from_xml start



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# File 'lib/hashutils.rb', line 64

def from_xml(element)
  out = nil

  if element.is_a?String
    element = REXML::Document.new(element)
    element = element.root
  end
  
  if !element.has_elements? and !element.has_attributes?
    out = element.text 
  else    
    if element.has_attributes?
      out = {}
      process_xml_attributes(element.attributes, out)
    end
    
    if element.has_elements?
      if potential_xml_array?(element.children)
        out = []
        process_xml_elements_as_array(element.children, out)
      else
        out = out || {}
        process_xml_elements(element.children, out)
      end
    end
  end    
  
  out
end

#from_xml!(element) ⇒ Object 



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# File 'lib/hashutils.rb', line 94

def from_xml!(element)
  out = self.from_xml(element)
  if out.class == self.class
    self.clear
    if self.is_a?Hash
      self.merge!(out) 
      self.xml_attributes = out.xml_attributes
    end
    if self.is_a?Array
      self.concat(out)
      self.xml_name = out.xml_name
    end
  end
end

#to_xml(args = {:name => nil, :pretty => false}) ⇒ Object 



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# File 'lib/hashutils.rb', line 18

def to_xml(args = {:name => nil, :pretty => false})
  tab = (args[:tab].nil?)? "" : args[:tab]
   
  build_attrs = Proc.new do |k, v|
    attributes = (self.respond_to?"xml_attributes" and !self.xml_attributes.nil?) ? self.xml_attributes : []
    out = ""
    out += " " + k.to_s + "=\"" + v.to_s + "\"" if attributes.select{|x| x == k}.length > 0
    out
  end

  build_body = Proc.new do |k, v|
    attributes = (self.respond_to?"xml_attributes" and !self.xml_attributes.nil?) ? self.xml_attributes : []
    out = ""
    if attributes.select{|x| x == k}.length == 0
      new_args = args.merge({:tab => tab, :name => k})
      out += v.to_xml(new_args) if v.respond_to?"to_xml"
      out += ((args[:pretty])? tab : "") + @@lt + k.to_s + @@gt + v.to_s + @@clt + k.to_s + @@gt unless v.respond_to?"to_xml"
      out += @@new_line if args[:pretty]
    end
    out
  end
 
  out = ""
  if !args[:name].nil?
    out += ((args[:pretty])? tab : "") + @@lt + args[:name].to_s 
    self.each_pair {|k, v| out += build_attrs.call(k, v, args)} if self.respond_to?"each_pair"
    out += @@gt
  end
  
  orig_tab = tab
  if !args[:name].nil? and args[:pretty]
    out += @@new_line
    tab += @@default_tab
  end
  
  self.each_pair {|k, v| out += build_body.call(k, v)} if self.respond_to?"each_pair"
  self.each {|v| out += build_body.call((@xml_name.nil?) ? "item" : @xml_name, v)} if !self.respond_to?"each_pair"
  
  out += ((args[:pretty])? orig_tab : "") + @@clt + args[:name].to_s + @@gt if !args[:name].nil?
  out
end