Class: ParameterSubstitution::Encoder

Inherits:
Object
  • Object
show all
Defined in:
lib/parameter_substitution/encoder.rb

Constant Summary collapse

ENCODINGS = 
{
  cgi:            "CGI encode - for html parameters",
  html:           "HTML encode - for html content",
  xml:            "XML encode",
  angle_brackets: "Content converted to a string and placed in angle brackets",
  json:           "JSON encode",
  raw:            "content is not changed",
  text:           "content is converted to a string"
}.keys

Class Method Summary collapse

Class Method Details

.encode(value, destination_encoding, source_encoding, parameter_name, inside_quotes) ⇒ Object 



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# File 'lib/parameter_substitution/encoder.rb', line 20

def encode(value, destination_encoding, source_encoding, parameter_name, inside_quotes)
  destination_encoding.in?(ENCODINGS) or raise "unknown encoding #{destination_encoding}"
  source_encoding.in?(ENCODINGS) or raise "unknown encoding #{source_encoding}"

  result =
    if source_encoding == destination_encoding
      if destination_encoding == :json && inside_quotes
        value.to_json
      else
        value
      end
    else
      case destination_encoding
      when :cgi
        CGI.escape(value.to_s)
      when :html
        CGI.escapeHTML(value.to_s)
      when :xml
        value_for_xml(parameter_name, value)
      when :angle_brackets
        "<#{value}>"
      when :json
        value.to_json
      when :raw
        value
      when :text
        value.to_s
      else
        raise "unexepected escaping #{destination_encoding}"
      end
    end

  if destination_encoding == :json && inside_quotes
    if value.is_a?(String)
      result[1...-1]
    else
      result.to_json[1...-1]
    end
  else
    result
  end
end