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author | Ivan Topolnjak <ivantopo@gmail.com> | 2014-03-05 08:04:57 -0300 |
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committer | Ivan Topolnjak <ivantopo@gmail.com> | 2014-03-16 23:24:23 -0300 |
commit | 34f38dc1cc22b20f007f19a28f8c42c26e034a69 (patch) | |
tree | 68b2d31a1b64d4ab0ff7801c1bfacd64577447e8 /site/src/main/jekyll/_plugins/pygments_code.rb | |
parent | a8b465358fac2534f98dcbcac6c076ac98015abc (diff) | |
download | Kamon-34f38dc1cc22b20f007f19a28f8c42c26e034a69.tar.gz Kamon-34f38dc1cc22b20f007f19a28f8c42c26e034a69.tar.bz2 Kamon-34f38dc1cc22b20f007f19a28f8c42c26e034a69.zip |
basic traces documentation
Diffstat (limited to 'site/src/main/jekyll/_plugins/pygments_code.rb')
-rw-r--r-- | site/src/main/jekyll/_plugins/pygments_code.rb | 201 |
1 files changed, 201 insertions, 0 deletions
diff --git a/site/src/main/jekyll/_plugins/pygments_code.rb b/site/src/main/jekyll/_plugins/pygments_code.rb new file mode 100644 index 00000000..c83ab474 --- /dev/null +++ b/site/src/main/jekyll/_plugins/pygments_code.rb @@ -0,0 +1,201 @@ +require 'pygments' +require 'fileutils' +require 'digest/md5' +#require 'colorator' + +PYGMENTS_CACHE_DIR = File.expand_path('../../.pygments-cache', __FILE__) +FileUtils.mkdir_p(PYGMENTS_CACHE_DIR) + +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>(.+)<\/pre>/m)[1].gsub(/ *$/, '') #strip out divs <div class="highlight"> + end + code = tableize_code(code, options[:lang], {linenos: options[:linenos], start: options[:start], marks: options[:marks]}) + code = "<figure class='code'>#{code}</figure>" + 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 = "<figcaption>#{caption}" + figcaption += "<a href='#{url}'>#{(link_text || 'link').strip}</a>" if url + figcaption += "</figcaption>" + end + + def self.tableize_code (code, lang, options = {}) + start = options[:start] || 1 + lines = options[:linenos] || true + marks = options[:marks] || [] + table = "<div class='highlight'><table><tr>" + + if lines == true + table += number_lines(start, code.lines.count, marks) if lines + end + + table += "<td class='main #{'unnumbered' unless lines} #{lang}'><pre>" + 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 += "<div class='#{classes}'>#{line}</div>" + end + table +="</pre></td></tr></table></div>" + end + + def self.number_lines (start, count, marks) + start ||= 1 + lines = "<td class='line-numbers' aria-hidden='true'><pre>" + count.times do |index| + classes = 'line-number' + if marks.include? index + start + classes += ' marked' + classes += ' start' unless marks.include? index - 1 + start + classes += ' end' unless marks.include? index + 1 + start + end + lines += "<div data-line='#{index + start}' class='#{classes}'></div>" + end + lines += "</pre></td>" + 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 + |