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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:
# {% 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
#
require 'pathname'
module Jekyll
class IncludeCodeTag < Liquid::Tag
def initialize(tag_name, file, tokens)
super
@file = file.strip
end
def render(context)
code_dir = (context.registers[:site].config['code_dir'] || '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
file_type = file.extname
url = "#{context.registers[:site].config['url']}/#{code_dir}/#{@file}"
source = "<figure role=code><figcaption><span>#{file.basename}</span> <a href='#{url}'>download</a></figcaption>\n"
source += "{% highlight #{file_type} %}\n" + code + "\n{% endhighlight %}</figure>"
partial = Liquid::Template.parse(source)
context.stack do
partial.render(context)
end
end
end
end
end
Liquid::Template.register_tag('include_code', Jekyll::IncludeCodeTag)
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