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# 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 './plugins/raw'

require 'pathname'

module Jekyll

class IncludeCodeTag < Liquid::Tag

def initialize(tag_name, markup, tokens)

@title = nil

@file = nil

if markup.strip =~ /\s*lang:(\S+)/i

@filetype = $1

markup = markup.strip.sub(/lang:\S+/i,'')

end

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('.','') if @filetype.nil?

title = @title ? "#{@title} (#{file.basename})" : file.basename

url = "/#{code_dir}/#{@file}"

source = "<figure class='code'><figcaption><span>#{title}</span> <a href='#{url}'>download</a></figcaption>\n"

source += "#{HighlightCode::highlight(code, @filetype)}</figure>"

TemplateWrapper::safe_wrap(source)

end

end

end

end

Liquid::Template.register_tag('include_code', Jekyll::IncludeCodeTag)