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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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