# Title: Include Code Tag for Jekyll # Author: Brandon Mathis http://brandonmathis.com # Description: Import files on your filesystem into any blog post as embedded code snippets with syntax highlighting and a download link. # Configuration: You can set default import path in _config.yml (defaults to code_dir: downloads/code) # # Syntax {% include_code path/to/file %} # # Example 1: # {% include_code javascripts/test.js %} # # This will import test.js from source/downloads/code/javascripts/test.js # and output the contents in a syntax highlighted code block inside a figure, # with a figcaption listing the file name and download link # # Example 2: # You can also include an optional title for the <figcaption> # # {% include_code Example 2 javascripts/test.js %} # # will output a figcaption with the title: Example 2 (test.js) # require './plugins/pygments_code' require 'pathname' module Jekyll class IncludeCodeTag < Liquid::Tag include HighlightCode def initialize(tag_name, markup, tokens) @title = nil @file = nil if markup.strip =~ /(.*)?(\s+|^)(\/*\S+)/i @title = $1 || nil @file = $3 end super end def render(context) code_dir = (context.registers[:site].config['code_dir'].sub(/^\//,'') || 'downloads/code') code_path = (Pathname.new(context.registers[:site].source) + code_dir).expand_path file = code_path + @file if File.symlink?(code_path) return "Code directory '#{code_path}' cannot be a symlink" end unless file.file? return "File #{file} could not be found" end Dir.chdir(code_path) do code = file.read @filetype = file.extname.sub('.','') title = @title ? "#{@title} (#{file.basename})" : file.basename url = "#{context.registers[:site].config['url']}/#{code_dir}/#{@file}" source = "<div><figure role=code><figcaption><span>#{title}</span> <a href='#{url}'>download</a></figcaption>\n" source += " #{highlight(code, @filetype)}</figure></div>" end end end end Liquid::Template.register_tag('include_code', Jekyll::IncludeCodeTag)