Class: CLI::UI::Wrap

Inherits:
Object
  • Object
show all
Defined in:
lib/cli/ui/wrap.rb

Instance Method Summary collapse

Constructor Details

#initialize(input) ⇒ Wrap

: (String input) -> void



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# File 'lib/cli/ui/wrap.rb', line 12

def initialize(input)
  @input = input
end

Instance Method Details

#wrap(total_width = Terminal.width) ⇒ Object

: (?Integer total_width) -> String



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# File 'lib/cli/ui/wrap.rb', line 17

def wrap(total_width = Terminal.width)
  max_width = total_width - Frame.prefix_width
  width = 0 #: Integer
  final = []
  # Create an alternation of format codes of parameter lengths 1-20, since + and {1,n} not allowed in lookbehind
  format_codes = (1..20).map { |n| /\x1b\[[\d;]{#{n}}m/ }.join('|')
  codes = ''
  @input.split(/(?=\s|\x1b\[[\d;]+m|\r)|(?<=\s|#{format_codes})/).each do |token|
    case token
    when '\x1B[0?m'
      codes = ''
      final << token
    when /\x1b\[[\d;]+m/
      codes += token # Track in use format codes so that they are resent after frame coloring
      final << token
    when "\n"
      final << "\n#{codes}"
      width = 0
    when /\s/
      token_width = ANSI.printing_width(token)
      if width + token_width <= max_width
        final << token
        width += token_width
      else
        final << "\n#{codes}"
        width = 0
      end
    else
      token_width = ANSI.printing_width(token)
      if width + token_width <= max_width
        final << token
        width += token_width
      else
        final << "\n#{codes}"
        final << token
        width = token_width
      end
    end
  end
  final.join
end