Module: Atom::Xml::Parseable::DeclarationMethods

Defined in:
lib/atom/xml/parser.rb

Overview

:nodoc:

Instance Method Summary collapse

Instance Method Details

#attribute(*names) ⇒ Object 



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# File 'lib/atom/xml/parser.rb', line 205

def attribute(*names)
  names.each do |name|
    attr_accessor name.to_s.sub(/:/, '_').to_sym
    self.attributes << name.to_s
  end
end

#element(*names) ⇒ Object 



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# File 'lib/atom/xml/parser.rb', line 185

def element(*names)
  options = {:type => :single}
  options.merge!(names.pop) if names.last.is_a?(Hash) 

  names.each do |name|
    attr_accessor name          
    self.ordered_element_specs << self.element_specs[name.to_s] = ParseSpec.new(name, options)
  end
end

#elements(*names) ⇒ Object 



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# File 'lib/atom/xml/parser.rb', line 195

def elements(*names)
  options = {:type => :collection}
  options.merge!(names.pop) if names.last.is_a?(Hash)

  names.each do |name|
    attr_accessor name
    self.ordered_element_specs << self.element_specs[name.to_s.singularize] = ParseSpec.new(name, options)
  end
end

#loadable!(&error_handler) ⇒ Object 



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# File 'lib/atom/xml/parser.rb', line 212

def loadable!(&error_handler)
  class_name = self.name
  (class << self; self; end).instance_eval do
    define_method "load_#{class_name.demodulize.downcase}" do |o|
       xml = nil
        case o
        when String
          xml = XML::Reader.new(o)
        when IO
          xml = XML::Reader.new(o.read)
        when URI
          raise ArgumentError, "#{class_name}.load only handles http URIs" if o.scheme != 'http'
          xml = XML::Reader.new(Net::HTTP.get_response(o).body)
        else
          raise ArgumentError, "#{class_name}.load needs String, URI or IO, got #{o.class.name}"
        end

        if error_handler
          xml.set_error_handler(&error_handler)
        else
          xml.set_error_handler do |reader, message, severity, base, line|
            if severity == XML::Reader::SEVERITY_ERROR
              raise ParseError, "#{message} at #{line}"
            end
          end
        end
        
        o = self.new(xml)
        xml.close
        o
    end
  end
end

#parse(xml) ⇒ Object 



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# File 'lib/atom/xml/parser.rb', line 246

def parse(xml)
  new(xml)
end