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# Title: Include Array Tag for Jekyll
# Author: Jason Woodward http://www.woodwardjd.com
# Description: Import files on your filesystem as specified in a configuration variable in _config.yml. Mostly cribbed from Jekyll's include tag.
# Syntax: {% include_array variable_name_from_config.yml %}
#
# Example 1:
# {% include_array asides %}
#
# _config.yml snippet:
# asides: [asides/twitter.html, asides/custom/my_picture.html]
#
module Jekyll
class IncludeArrayTag < Liquid::Tag
Syntax = /(#{Liquid::QuotedFragment}+)/
def initialize(tag_name, markup, tokens)
if markup =~ Syntax
@array_name = $1
else
raise SyntaxError.new("Error in tag 'include_array' - Valid syntax: include_array [array from _config.yml]")
end
super
end
def render(context)
includes_dir = File.join(context.registers[:site].source, '_includes')
if File.symlink?(includes_dir)
return "Includes directory '#{includes_dir}' cannot be a symlink"
end
rtn = ''
(context.environments.first['site'][@array_name] || []).each do |file|
if file !~ /^[a-zA-Z0-9_\/\.-]+$/ || file =~ /\.\// || file =~ /\/\./
rtn = rtn + "Include file '#{file}' contains invalid characters or sequences"
end
Dir.chdir(includes_dir) do
choices = Dir['**/*'].reject { |x| File.symlink?(x) }
if choices.include?(file)
source = File.read(file)
partial = Liquid::Template.parse(source)
context.stack do
rtn = rtn + partial.render(context)
end
else
rtn = rtn + "Included file '#{file}' not found in _includes directory"
end
end
end
rtn
end
end
end
Liquid::Template.register_tag('include_array', Jekyll::IncludeArrayTag)
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