Class: Nitlink::Splitter

Inherits:
Object
  • Object
show all
Defined in:
lib/nitlink/splitter.rb

Instance Method Summary collapse

Constructor Details

#initialize(string) ⇒ Splitter

Returns a new instance of Splitter.



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# File 'lib/nitlink/splitter.rb', line 5

def initialize(string)
  @string = string
  @scanner = StringScanner.new(string)
end

Instance Method Details

#in_url? ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/nitlink/splitter.rb', line 35

def in_url?
  preceeding = @scanner.string[0...(@scanner.pos - 1)].strip
  preceeding.end_with?(',') || preceeding.empty?
end

#split_on_unquoted(seperator) ⇒ Object 



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# File 'lib/nitlink/splitter.rb', line 10

def split_on_unquoted(seperator)
  # 0 = start of string
  split_positions, ignored_split_positions = [0], [] 
  in_quote = false

  until @scanner.eos?
    char = @scanner.getch
    @scanner.getch if in_quote && char == "\\"

    in_quote = !in_quote if char == '"'
    @scanner.skip_until(/>/) and next if char == '<' && in_url?

    if char == seperator
      ignored_split_positions = []
      (in_quote ? ignored_split_positions : split_positions) << @scanner.pos
    end
  end
  split_positions << @string.length # end of string
  split_positions += ignored_split_positions if in_quote # dangling quote

  split_positions.sort.each_cons(2).inject([]) do |split_parts, (start_pos, end_pos)|
    split_parts << @string[start_pos...end_pos].chomp(seperator)
  end
end