Class: Belajar::Markdown::Printer

Inherits:
Object
  • Object
show all
Defined in:
lib/belajar/markdown/printer.rb

Constant Summary collapse

H1 =

‘# heading’

/\A\#{1}[^#]+/
H2 =

‘## sub heading’

/\A\#{2}[^#]+/
BOLD =

‘text’

/\*[^*]*\*/
LINE =

‘—’ vertical line

/\A-{3,}/
CODE =

‘`code line`’

/`[^`]*`/

Instance Attribute Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(window:) ⇒ Printer

Returns a new instance of Printer.



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# File 'lib/belajar/markdown/printer.rb', line 15

def initialize(window:)
  @window = window
end

Instance Attribute Details

#window ⇒ Object (readonly)

Returns the value of attribute window.



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# File 'lib/belajar/markdown/printer.rb', line 13

def window
  @window
end

Instance Method Details



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# File 'lib/belajar/markdown/printer.rb', line 19

def print(text)
  text_line = RubyDoc.parse(text)

  case text_line
  when H1                  then print_h1(text_line)
  when H2                  then print_h2(text_line)
  when /(#{CODE}|#{BOLD})/ then print_code_or_bold(text_line)
  when BOLD                then print_bold(text_line)
  when LINE                then print_line
  else print_escaped(text_line)
  end
end

#print_bold(text) ⇒ Object 



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# File 'lib/belajar/markdown/printer.rb', line 68

def print_bold(text)
  text.chars.each_with_index do |char, index|
    if char == '*' && text[index - 1] != '\\'
      emphasized = !emphasized
      next
    end

    character = text[index..(index + 1)].to_s == '\\*' ? '' : char
    emphasized ? window.emphasize(character) : window.write(character)
  end
end

#print_code_or_bold(text) ⇒ Object 



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# File 'lib/belajar/markdown/printer.rb', line 41

def print_code_or_bold(text)
  emphasized  = false
  highlighted = false

  text.chars.each_with_index do |char, index|
    if char == '*' && text[index - 1] != '\\'
      emphasized = !emphasized
      next
    end

    if char == '`'
      highlighted = !highlighted
      next
    end

    character = text[index..(index + 1)] == '\\*' ? '' : char

    if highlighted
      window.red(character)
    elsif emphasized
      window.emphasize(character)
    else
      window.write(character)
    end
  end
end

#print_escaped(text) ⇒ Object 



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# File 'lib/belajar/markdown/printer.rb', line 84

def print_escaped(text)
  window.write(text.gsub(/(\\#)/, '#'))
end

#print_h1(text) ⇒ Object 



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# File 'lib/belajar/markdown/printer.rb', line 32

def print_h1(text)
  window.heading(text.sub(/\A#\s?/, ''))
end

#print_h2(text) ⇒ Object 



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# File 'lib/belajar/markdown/printer.rb', line 36

def print_h2(text)
  text_decoration = Curses::A_UNDERLINE | Curses::A_NORMAL
  window.emphasize(text.sub(/\A##\s?/, ''), text_decoration)
end

#print_line ⇒ Object 



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# File 'lib/belajar/markdown/printer.rb', line 80

def print_line
  window.write('-' * (Curses.cols - 2))
end