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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 javascripts/test.js Example 2 %}
#
# will output a figcaption with the title: Example 2 (test.js)
#
#encoding: utf-8
#require 'colorator'
require 'pathname'
require './_plugins/pygments_code'
module Jekyll
class IncludeCodeTag < Liquid::Tag
def initialize(tag_name, markup, tokens)
@file = nil
@title_old = nil
@original_markup = markup
opts = Octopress::Pygments.parse_markup(markup)
@options = opts.merge({
link_text: opts[:link_text] || 'view raw',
start: opts[:start] || 1
})
markup = Octopress::Pygments.clean_markup(markup)
if markup.strip =~ /(^\S*\.\S+) *(.+)?/i
@file = $1
@options[:title] ||= $2
elsif markup.strip =~ /(.*?)(\S*\.\S+)\Z/i # Title before file is deprecated in 2.1
@title_old = $1
@file = $2
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
filepath = code_path + @file
unless @title_old.nil?
@options[:title] ||= @title_old
puts "### ------------ WARNING ------------ ###".yellow
puts "This include_code syntax is deprecated ".yellow
puts "Correct syntax: path/to/file.ext [title]".yellow
puts "Update include for #{filepath}".yellow
puts "### --------------------------------- ###".yellow
end
if File.symlink?(code_path)
puts "Code directory '#{code_path}' cannot be a symlink".yellow
return "Code directory '#{code_path}' cannot be a symlink".yellow
end
unless filepath.file?
puts "File #{filepath} could not be found".yellow
return "File #{filepath} could not be found".yellow
end
Dir.chdir(code_path) do
@options[:lang] ||= filepath.extname.sub('.','')
@options[:title] = @options[:title] ? "#{@options[:title]} (#{filepath.basename})" : filepath.basename
@options[:url] ||= "/#{code_dir}/#{@file}"
code = filepath.read
code = Octopress::Pygments.get_range(code, @options[:start], @options[:end])
begin
Octopress::Pygments.highlight(code, @options)
rescue MentosError => e
markup = "{% include_code #{@original_markup} %}"
Octopress::Pygments.highlight_failed(e, "{% include_code [title] [lang:language] path/to/file [start:#] [end:#] [range:#-#] [mark:#,#-#] [linenos:false] %}", markup, code, filepath)
end
end
end
end
end
Liquid::Template.register_tag('include_code', Jekyll::IncludeCodeTag)
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