Class: Ansispan

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

Class Method Summary collapse

Class Method Details

.convert(str, escape_character: '\033') ⇒ Object 



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# File 'lib/ansispan.rb', line 13

def self.convert(str, escape_character: '\033')
  escape_character = Regexp.escape(escape_character)

  @foreground_colors.keys.each do |ansi|
    span = '<span style="color: ' + @foreground_colors[ansi] + '">'
    #
    # `\033[Xm` == `\033[0;Xm` sets foreground color to `X`.
    #

    str = str.gsub(/#{escape_character}\[#{ansi}m/, span)
      .gsub(/#{escape_character}\[#{ansi}m/, span)
  end

  #
  # `\033[1m` enables bold font, `\033[22m` disables it
  #
  str = str.gsub(/#{escape_character}\[1m/, '<b>')
    .gsub(/#{escape_character}\[22m/, '</b>')


  # Bold colors
  @foreground_colors.keys.each do |ansi|
    span = '<span style="font-weight: bold; color: ' + @foreground_colors[ansi] + '">'
    str = str.gsub(/#{escape_character}\[1;#{ansi}m/, span)
  end

  # Underline colors
  @foreground_colors.keys.each do |ansi|
    span = '<span style="text-decoration: underline; color: ' + @foreground_colors[ansi] + '">'
    str = str.gsub(/#{escape_character}\[4;#{ansi}m/, span)
  end
  #
  # `\033[3m` enables italics font, `\033[23m` disables it
  #
  str = str.gsub(/#{escape_character}\[3m/, '<i>')
    .gsub(/#{escape_character}\[23m/, '</i>')

  str = str.gsub(/#{escape_character}\[m/, '</span>');
  str = str.gsub(/#{escape_character}\[0m/, '</span>');
  return str.gsub(/#{escape_character}\[39m/, '</span>');
end