Class: Rouge::Formatters::HTMLLineHighlighter

Inherits:
Rouge::Formatter show all
Defined in:
lib/rouge/formatters/html_line_highlighter.rb

Constant Summary

Constants inherited from Rouge::Formatter

Rouge::Formatter::REGISTRY

Instance Method Summary collapse

Methods inherited from Rouge::Formatter

disable_escape!, enable_escape!, #escape?, escape_enabled?, #filter_escapes, find, format, #format, #render, tag, with_escape

Constructor Details

#initialize(delegate, opts = {}) ⇒ HTMLLineHighlighter

Returns a new instance of HTMLLineHighlighter.



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# File 'lib/rouge/formatters/html_line_highlighter.rb', line 14

def initialize(delegate, opts = {})
  @delegate = HTML.assert_html_formatter!(delegate)
  @highlight_line_class = opts.fetch(:highlight_line_class, 'hll')
  @highlight_lines = opts[:highlight_lines] || []
end

Instance Method Details

#stream(tokens) ⇒ Object 



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# File 'lib/rouge/formatters/html_line_highlighter.rb', line 20

def stream(tokens)
  token_lines(tokens).with_index(1) do |line_tokens, lineno|
    should_highlight = @highlight_lines.include?(lineno)
    yield %(<span class=#{@highlight_line_class.inspect}>) if should_highlight
    line_tokens.each { |tok, val| yield @delegate.span(tok, val) }
    yield "\n"
    yield %(</span>) if should_highlight
  end
end