Class: HTML5::Filters::WhitespaceFilter

Inherits:
Base
  • Object
show all
Defined in:
lib/html5/filters/whitespace.rb

Constant Summary collapse

SPACE_PRESERVE_ELEMENTS = 
%w[pre textarea] + RCDATA_ELEMENTS
SPACES = 
/[#{SPACE_CHARACTERS.join('')}]+/m

Instance Method Summary collapse

Instance Method Details

#each ⇒ Object 



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# File 'lib/html5/filters/whitespace.rb', line 11

def each
  preserve = 0
  __getobj__.each do |token|
    case token[:type]
    when :StartTag
      if preserve > 0 or SPACE_PRESERVE_ELEMENTS.include?(token[:name])
        preserve += 1
      end

    when :EndTag
      preserve -= 1 if preserve > 0

    when :SpaceCharacters
      token[:data] = " " if preserve == 0 && token[:data]

    when :Characters
      token[:data] = token[:data].sub(SPACES,' ') if preserve == 0
    end

    yield token
  end
end