Module: Braintree::Xml::Parser

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

Overview

:nodoc:

Constant Summary collapse

XML_PARSING =
{
  "datetime" => Proc.new { |time| ::Time.parse(time).utc },
  "integer"  => Proc.new { |integer| integer.to_i },
  "boolean"  => Proc.new { |boolean| %w(1 true).include?(boolean.strip) },
}

Class Method Summary collapse

Class Method Details

._determine_parserObject


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# File 'lib/braintree/xml/parser.rb', line 20

def self._determine_parser
  # If LibXML is not available, we fall back to REXML
  # This allows us to be compatible with JRuby, which LibXML does not support
  if defined?(::LibXML::XML) && ::LibXML::XML.respond_to?(:default_keep_blanks=)
    ::Braintree::Xml::Libxml
  else
    ::Braintree::Xml::Rexml
  end
end

._transform_xml(value) ⇒ Object

Transform into standard Ruby types and convert all keys to snake_case instead of dash-case


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# File 'lib/braintree/xml/parser.rb', line 31

def self._transform_xml(value)
  case value.class.to_s
    when "Hash"
      if value["type"] == "array"
        child_key, entries = value.detect { |k,v| k != "type" }   # child_key is throwaway
        if entries.nil? || ((c = value[CONTENT_ROOT]) && c.strip.empty?)
          []
        else
          case entries.class.to_s   # something weird with classes not matching here.  maybe singleton methods breaking is_a?
          when "Array"
            entries.collect { |v| _transform_xml(v) }
          when "Hash"
            [_transform_xml(entries)]
          else
            raise "can't typecast #{entries.inspect}"
          end
        end
      elsif value.has_key?(CONTENT_ROOT)
        content = value[CONTENT_ROOT]
        if (parser = XML_PARSING[value["type"]])
          XML_PARSING[value["type"]].call(content)
        else
          content
        end
      elsif value["type"] == "string" && value["nil"] != "true"
        ""
      elsif value == {}
        ""
      elsif value.nil? || value["nil"] == "true"
        nil
      # If the type is the only element which makes it then
      # this still makes the value nil, except if type is
      # a XML node(where type['value'] is a Hash)
      elsif value["type"] && value.size == 1 && !value["type"].is_a?(::Hash)
        raise "is this needed?"
        nil
      else
        xml_value = value.inject({}) do |h,(k,v)|
          h[k.to_s.tr("-", "_")] = _transform_xml(v) # convert dashes to underscores in keys
          h
        end
        xml_value
      end
    when "Array"
      value.map! { |i| _transform_xml(i) }
      case value.length
        when 0 then nil
        when 1 then value.first
        else value
      end
    when "String"
      value
    else
      raise "can't transform #{value.class.name} - #{value.inspect}"
  end
end

.hash_from_xml(xml, parser = _determine_parser) ⇒ Object


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# File 'lib/braintree/xml/parser.rb', line 14

def self.hash_from_xml(xml, parser = _determine_parser)
  standardized_hash_structure = parser.parse(xml)
  transformed_xml = _transform_xml(standardized_hash_structure)
  Util.symbolize_keys(transformed_xml)
end