diff options
Diffstat (limited to 'lib/banzai/filter/syntax_highlight_filter.rb')
| -rw-r--r-- | lib/banzai/filter/syntax_highlight_filter.rb | 26 |
1 files changed, 18 insertions, 8 deletions
diff --git a/lib/banzai/filter/syntax_highlight_filter.rb b/lib/banzai/filter/syntax_highlight_filter.rb index 91f0159f9a1..fcdb496aed2 100644 --- a/lib/banzai/filter/syntax_highlight_filter.rb +++ b/lib/banzai/filter/syntax_highlight_filter.rb @@ -17,15 +17,12 @@ module Banzai def highlight_node(node) language = node.attr('class') - code = node.text - + code = node.text css_classes = "code highlight" - - lexer = Rouge::Lexer.find_fancy(language) || Rouge::Lexers::PlainText - formatter = Rouge::Formatters::HTML.new + lexer = lexer_for(language) begin - code = formatter.format(lexer.lex(code)) + code = format(lex(lexer, code)) css_classes << " js-syntax-highlight #{lexer.tag}" rescue @@ -41,14 +38,27 @@ module Banzai private + # Separate method so it can be instrumented. + def lex(lexer, code) + lexer.lex(code) + end + + def format(tokens) + rouge_formatter.format(tokens) + end + + def lexer_for(language) + (Rouge::Lexer.find(language) || Rouge::Lexers::PlainText).new + end + def replace_parent_pre_element(node, highlighted) # Replace the parent `pre` element with the entire highlighted block node.parent.replace(highlighted) end # Override Rouge::Plugins::Redcarpet#rouge_formatter - def rouge_formatter(lexer) - Rouge::Formatters::HTML.new + def rouge_formatter(lexer = nil) + @rouge_formatter ||= Rouge::Formatters::HTML.new end end end |