Class: JsonToToon::Encoder

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

Constant Summary collapse

DEFAULT_INDENT = 
2
DELIMITER_COMMA = 
','
DELIMITER_TAB = 
"\t"
DELIMITER_PIPE = 
'|'
VALID_DELIMITERS = 
[DELIMITER_COMMA, DELIMITER_TAB, DELIMITER_PIPE].freeze

Instance Attribute Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(options = {}) ⇒ Encoder

Returns a new instance of Encoder.



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# File 'lib/json_to_toon/encoder.rb', line 15

def initialize(options = {})
  @indent_size = options[:indent] || DEFAULT_INDENT
  @delimiter = options[:delimiter] || DELIMITER_COMMA
  @length_marker = options[:length_marker] || false

  validate_options!

  @output = []
  @visited = {}
end

Instance Attribute Details

#delimiter ⇒ Object (readonly)

Returns the value of attribute delimiter.



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# File 'lib/json_to_toon/encoder.rb', line 13

def delimiter
  @delimiter
end

#indent_size ⇒ Object (readonly)

Returns the value of attribute indent_size.



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# File 'lib/json_to_toon/encoder.rb', line 13

def indent_size
  @indent_size
end

#length_marker ⇒ Object (readonly)

Returns the value of attribute length_marker.



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# File 'lib/json_to_toon/encoder.rb', line 13

def length_marker
  @length_marker
end

Instance Method Details

#delimiter_marker ⇒ Object 



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# File 'lib/json_to_toon/encoder.rb', line 39

def delimiter_marker
  case @delimiter
  when DELIMITER_COMMA then ''
  when DELIMITER_TAB then "\t"
  when DELIMITER_PIPE then '|'
  end
end

#encode(value) ⇒ Object 



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# File 'lib/json_to_toon/encoder.rb', line 26

def encode(value)
  @output = []
  @visited = {}
  result = encode_value(value, 0)

  # If encoding a primitive value at root, encode_value returns the
  # formatted string but nothing is emitted to @output. In that case
  # return the direct result.
  return result.to_s if @output.empty? && result

  @output.join("\n")
end

#length_prefix ⇒ Object 



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# File 'lib/json_to_toon/encoder.rb', line 47

def length_prefix
  @length_marker == '#' ? '#' : ''
end