Class: RexleBuilder

Inherits:
Object
  • Object
show all
Defined in:
lib/rexle-builder.rb

Class Method Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(obj = nil, root: 'root', debug: false) ⇒ RexleBuilder

Returns a new instance of RexleBuilder.



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# File 'lib/rexle-builder.rb', line 23

def initialize(obj=nil, root: 'root', debug: false)

  @debug = debug
  @a = []
  @current_a = @a
  @namespace = nil

  if obj.is_a? Hash then

    key = obj.keys.first

    if obj.length > 1 or obj[key].is_a?(Array) or obj[key].is_a?(String) then
      self.send(root.to_sym) { buildx obj}
    else
      self.send(key.to_sym) {buildx obj[key]}
    end

  end
end

Dynamic Method Handling

This class handles dynamic methods through the method_missing method

#method_missing(sym, *args) ⇒ Object 



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# File 'lib/rexle-builder.rb', line 52

def method_missing(sym, *args)

  puts 'args: ' + args.inspect if @debug

  value = args.find {|x| x.is_a? String} || ''
  attributes, obj = args.select {|x| x.is_a? Hash}

  # The obj is an optional Hash object used to build nested XML
  # after the current element

  if value =~ /^<.*>$/ then

    a = [
      sym.to_s,
      attributes,
      *Rexle.new("<root>%s</root>" % value, debug: @debug).to_a[2..-1]
    ]

  end


  # reserved keywords are masked with ._ e.g. ._method_missing
  a ||= [sym.to_s.sub(/^(?:\._|_)/,'').sub(/^cdata!$/,'![')\
       .sub(/^comment!$/, '!-'), attributes || {}, value || '']
  if @debug then
    puts 'sym: ' + sym.inspect
    puts 'args: ' + args.inspect
    puts 'obj: ' + obj.inspect
    puts 'a: ' + a.inspect
  end

  a.concat RexleBuilder.new(obj, debug: false).to_a[3..-1] if obj

  if @namespace then
    a.first.prepend(@namespace + ':')
    @namespace = nil
  end

  @current_a << a
  puts '@current_a, before block_given : ' + @current_a.inspect if @debug

  if block_given? then

    prev_a = @current_a
    @current_a = a

    r = yield(@current_a)
    @current_a = prev_a

    if @debug then
      puts 'r: ' + r.inspect
      puts 'r.class: ' + r.class.inspect
    end

    return r if r == @a.first

    if r.is_a? Array then
      
      # only concat if r contains raw Rexle elements.
      if r.all? {|field, attributes, value| attributes.is_a?(Hash) and \
                 value} then
        puts 'concatenating: ' + r.inspect if @debug
        @current_a.concat r
      end

    end
    puts '@current_a ' + @current_a.inspect if @debug
    #@current_a = prev_a
    return @a.first
    #return @current_a

  end

  #@a.first
  nil
end

Class Method Details

.build(debug: false) {|self.new(debug: debug)| ... } ⇒ Object

Yields:

  • (self.new(debug: debug)) 


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# File 'lib/rexle-builder.rb', line 17

def self.build(debug: false)

  yield(self.new(debug: debug))

end

Instance Method Details

#[](s) ⇒ Object 



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# File 'lib/rexle-builder.rb', line 43

def [](s)
  @namespace = s
  self
end

#to_a ⇒ Object 



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# File 'lib/rexle-builder.rb', line 48

def to_a
  @a.first
end