require 'pygments' require 'fileutils' require 'digest/md5' module Octopress module Pygments def self.render_pygments(code, lang) highlighted_code = ::Pygments.highlight(code, :lexer => lang, :formatter => 'html', :options => {:encoding => 'utf-8'}) highlighted_code = highlighted_code.gsub(/{{/, '{{').gsub(/{%/, '{%') highlighted_code.to_s end def self.highlight(code, options = {}) lang = options[:lang] lang = 'ruby' if lang == 'ru' lang = 'objc' if lang == 'm' lang = 'perl' if lang == 'pl' lang = 'yaml' if lang == 'yml' lang = 'coffeescript' if lang == 'coffee' lang = 'csharp' if lang == 'cs' lang = 'plain' if lang == '' or lang.nil? or !lang options[:lang] = lang options[:title] ||= ' ' if options[:url] options[:no_cache] = true # Attempt to retrieve cached code cache = nil unless options[:no_cache] path = options[:cache_path] || get_cache_path(PYGMENTS_CACHE_DIR, options[:lang], options.to_s + code) cache = read_cache(path) end unless cache if options[:lang] == 'plain' # Escape html tags code = code.gsub('<','<') else code = render_pygments(code, options[:lang]).match(/
(.+)<\/pre>/m)[1].gsub(/ *$/, '') #strip out divsend code = tableize_code(code, options[:lang], {linenos: options[:linenos], start: options[:start], marks: options[:marks]}) code = "#{code} " File.open(path, 'w') {|f| f.print(code) } unless options[:no_cache] end cache || code end def self.read_cache (path) File.exist?(path) ? File.read(path) : nil unless path.nil? end def self.get_cache_path (dir, name, str) File.join(dir, "#{name}-#{Digest::MD5.hexdigest(str)}.html") end def self.captionize (caption, url, link_text) figcaption = "#{caption}" figcaption += "#{(link_text || 'link').strip}" if url figcaption += " " end def self.tableize_code (code, lang, options = {}) start = options[:start] || 1 lines = options[:linenos] || true marks = options[:marks] || [] table = "" end def self.number_lines (start, count, marks) start ||= 1 lines = " " end def self.parse_markup (input, defaults={}) lang = input.match(/\s*lang:\s*(\S+)/i) lang = (lang.nil? ? nil : lang[1]) url = input.match(/\s*url:\s*(("(.+?)")|('(.+?)')|(\S+))/i) url = (url.nil? ? nil : url[3] || url[5] || url[6]) title = input.match(/\s*title:\s*(("(.+?)")|('(.+?)')|(\S+))/i) title = (title.nil? ? nil : title[3] || title[5] || title[6]) title ||= ' ' if url linenos = input.match(/\s*linenos:\s*(\w+)/i) linenos = (linenos.nil? ? nil : linenos[1]) marks = get_marks(input) link_text = input.match(/\s*link[-_]text:\s*(("(.+?)")|('(.+?)')|(\S+))/i) link_text = (link_text.nil? ? 'link' : link_text[3] || link_text[5] || link_text[6]) start = input.match(/\s*start:\s*(\d+)/i) start = (start.nil? ? nil : start[1].to_i) endline = input.match(/\s*end:\s*(\d+)/i) endline = (endline.nil? ? nil : endline[1].to_i) if input =~ / *range:(\d+)-(\d+)/i start = $1.to_i endline = $2.to_i end options = { lang: lang, url: url, title: title, linenos: linenos, marks: marks, link_text: link_text, start: start, end: endline } #defaults.each { |k,v| options[k] ||= defaults[k] } options.each { |k,v| options[k] ||= defaults[k] } end def self.clean_markup (input) input.sub(/\s*lang:\s*\S+/i,'' ).sub(/\s*title:\s*(("(.+?)")|('(.+?)')|(\S+))/i,'' ).sub(/\s*url:\s*(\S+)/i,'' ).sub(/\s*link_text:\s*(("(.+?)")|('(.+?)')|(\S+))/i,'' ).sub(/\s*mark:\s*\d\S*/i,'' ).sub(/\s*linenos:\s*\w+/i,'' ).sub(/\s*start:\s*\d+/i,'' ).sub(/\s*end:\s*\d+/i,'' ).sub(/\s*range:\s*\d+-\d+/i,'') end def self.get_marks (input) # Matches pattern for line marks and returns array of line numbers to mark # Example input mark:1,5-10,2 # Outputs: [1,2,5,6,7,8,9,10] marks = [] if input =~ / *mark:(\d\S*)/i marks = $1.gsub /(\d+)-(\d+)/ do ($1.to_i..$2.to_i).to_a.join(',') end marks = marks.split(',').collect {|s| s.to_i}.sort end marks end def self.get_range (code, start, endline) length = code.lines.count start ||= 1 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 def self.highlight_failed(error, syntax, markup, code, file = nil) code_snippet = code.split("\n")[0..9].map{|l| " #{l}" }.join("\n") fail_message = "\nPygments Error while parsing the following markup#{" in #{file}" if file}:\n\n".red fail_message += " #{markup}\n#{code_snippet}\n" fail_message += "#{" ..." if code.split("\n").size > 10}\n" fail_message += "\nValid Syntax:\n\n#{syntax}\n".yellow fail_message += "\nPygments Error:\n\n#{error.message}".red $stderr.puts fail_message.chomp raise ArgumentError end end end
" if lines == true table += number_lines(start, code.lines.count, marks) if lines end table += " " code.lines.each_with_index do |line,index| classes = 'line' if marks.include? index + start classes += ' bg-warning' classes += ' start' unless marks.include? index - 1 + start classes += ' end' unless marks.include? index + 1 + start end line = line.strip.empty? ? ' ' : line table += "#{line}" end table +="