class Octopress::Pygments::Renderer
Attributes
code[RW]
lang[RW]
options[RW]
Public Class Methods
new(code, options = {})
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# File lib/octopress-pygments/renderer.rb, line 6 def initialize(code, options = {}) @code = code @options = options.delete_if { |k,v| v.nil? } @options = DEFAULTS.merge(@options) @aliases = @options[:aliases] @aliases = (@aliases ? stringify_keys(@aliases) : {}) @lang = determine_lang(@options[:lang]) end
Public Instance Methods
captionize(caption, url, link_text)
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# File lib/octopress-pygments/renderer.rb, line 60 def captionize (caption, url, link_text) figcaption = "<figcaption class='pygments-code-caption'><span class='pygments-code-caption-title'>#{caption}</span>" figcaption += "<a class='pygments-code-caption-link' href='#{url}'>#{(link_text || 'link').strip}</a>" if url figcaption += "</figcaption>" end
determine_lang(lang)
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# File lib/octopress-pygments/renderer.rb, line 34 def determine_lang(lang) if lang == '' lang = 'plain' elsif ::Pygments::Lexer.find lang lang elsif !@aliases[lang].nil? and ::Pygments::Lexer.find @aliases[lang] @aliases[lang] else 'plain' end end
encode_liquid(code)
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# File lib/octopress-pygments/renderer.rb, line 101 def encode_liquid(code) code.gsub(/{{/, '{{') .gsub(/{%/, '{%') end
get_range(code, start, endline)
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Public:
# File lib/octopress-pygments/renderer.rb, line 89 def get_range(code, start, endline) length = code.lines.count start endline ||= length if start > 1 or endline < length raise "#{filepath} is #{length} lines long, cannot begin at line #{start}" if start > length raise "#{filepath} is #{length} lines long, cannot read beyond line #{endline}" if endline > length code = code.split(/\n/).slice(start - 1, endline + 1 - start).join("\n") end code end
highlight()
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# File lib/octopress-pygments/renderer.rb, line 15 def highlight @options[:title] ||= ' ' if @options[:url] if cache = Cache.read_cache(code, @options) cache else if @lang == 'plain' rendered_code = code.to_s.gsub('<','<') else rendered_code = render_pygments(code, @lang).match(/<pre>(.+)<\/pre>/m)[1].gsub(/ *$/, '') #strip out divs <div class="highlight"> end rendered_code = tableize_code(rendered_code, @lang, {linenos: @options[:linenos], start: @options[:start], marks: @options[:marks]}) title = captionize(@options[:title], @options[:url], @options[:link_text]) if @options[:title] rendered_code = "<figure class='pygments-code-figure'>#{title}#{rendered_code}</figure>" rendered_code = "{% raw %}#{rendered_code}{% endraw %}" if @options[:escape] Cache.write_to_cache(rendered_code, @options) unless @options[:no_cache] rendered_code end end
render_pygments(code, lang)
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# File lib/octopress-pygments/renderer.rb, line 46 def render_pygments(code, lang) highlighted_code = ::Pygments.highlight( code, { lexer: lang, formatter: 'html', options: { encoding: 'utf-8' } } ) encode_liquid(highlighted_code).to_s end
tableize_code(code, lang, options = {})
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# File lib/octopress-pygments/renderer.rb, line 66 def tableize_code (code, lang, options = {}) start = options[:start] lines = options[:linenos] marks = options[:marks] table = "<div class='pygments-code'>" table += "<pre class='pygments-code-pre #{lang}'>" code.lines.each_with_index do |line,index| classes = 'pygments-code-row' classes += lines ? ' numbered' : ' unnumbered' if marks.include? index + start classes += ' marked-line' classes += ' start-marked-line' unless marks.include? index - 1 + start classes += ' end-marked-line' unless marks.include? index + 1 + start end line = line.strip.empty? ? ' ' : line table += "<div data-line='#{index + start}' class='#{classes}'><div class='pygments-code-line'>#{line}</div></div>" end table +="</pre></div>" end
Private Instance Methods
stringify_keys(hash)
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# File lib/octopress-pygments/renderer.rb, line 108 def stringify_keys(hash) hash.inject({}){|result, (key, value)| new_key = case key when String then key.to_s else key end new_value = case value when Hash then stringify_keys(value) else value end result[new_key] = new_value result } end