Add KramdownPygments file directly

_plugins/kramdown-with-pygments/kramdown_pygments.rb

@@ -0,0 +1,98 @@
+# We define the an additional option for the kramdown parser to look for
+module Kramdown
+  module Options
+      define(:kramdown_default_lang, Symbol, nil, <<EOF)
+Sets the default language for highlighting code blocks
+
+If no language is set for a code block, the default language is used
+instead. The value has to be one of the languages supported by pygments
+or nil if no default language should be used.
+
+Default: nil
+Used by: PygmentsHtml converter
+EOF
+  end
+end
+
+# This class is a plugin for kramdown, to make it use pygments instead of coderay
+# It has nothing to do with Jekyll, it is simply used by the custom converter below
+module Kramdown
+  module Converter
+    class PygmentsHtml < Html
+
+      begin
+        require 'pygments'
+      rescue LoadError
+        STDERR.puts 'You are missing a library required for syntax highlighting. Please run:'
+        STDERR.puts '  $ [sudo] gem install pygments'
+        raise FatalException.new("Missing dependency: Pygments")
+      end
+
+      def extract_code_language_with_fix!(attr)
+        lang = extract_code_language!(attr) || @options[:kramdown_default_lang]
+        lang = "bash" if lang == "shell"
+        lang
+      end
+
+      def convert_codeblock(el, indent)
+        attr = el.attr.dup
+        lang = extract_code_language_with_fix!(attr)
+        code = pygmentize(el.value, lang)
+        code_attr = {}
+        code_attr['class'] = "language-#{lang}" if lang
+        "#{' '*indent}<div class=\"highlight\"><pre#{html_attributes(attr)}><code#{html_attributes(code_attr)}>#{code}</code></pre></div>\n"
+      end
+
+      def convert_codespan(el, indent)
+        attr = el.attr.dup
+        lang = extract_code_language_with_fix!(attr)
+        code = pygmentize(el.value, lang)
+        if lang
+          attr['class'] = "highlight"
+          if attr.has_key?('class')
+            attr['class'] += " language-#{lang}"
+          else
+            attr['class'] = "language-#{lang}"
+          end
+        end
+        "<code#{html_attributes(attr)}>#{code}</code>"
+      end
+
+      def pygmentize(code, lang)
+        if lang
+          Pygments.highlight(code,
+            :lexer => lang,
+            :options => { :startinline => true, :encoding => 'utf-8', :nowrap => true })
+        else
+          escape_html(code)
+        end
+      end
+    end
+  end
+end
+
+# This class is the actual custom Jekyll converter.
+class Jekyll::Converters::Markdown::KramdownPygments
+
+  def initialize(config)
+    require 'kramdown'
+    @config = config
+  rescue LoadError
+    STDERR.puts 'You are missing a library required for Markdown. Please run:'
+    STDERR.puts '  $ [sudo] gem install kramdown'
+    raise FatalException.new("Missing dependency: kramdown")
+  end
+
+  def convert(content)
+    html = Kramdown::Document.new(content, {
+        :auto_ids             => @config['kramdown']['auto_ids'],
+        :footnote_nr          => @config['kramdown']['footnote_nr'],
+        :entity_output        => @config['kramdown']['entity_output'],
+        :toc_levels           => @config['kramdown']['toc_levels'],
+        :smart_quotes         => @config['kramdown']['smart_quotes'],
+        :kramdown_default_lang => @config['kramdown']['default_lang'],
+        :input                => @config['kramdown']['input']
+    }).to_pygments_html
+    return html;
+  end
+end