middleman/middleman-core/lib/middleman-core/renderers/markdown.rb

62 lines
2.3 KiB
Ruby

module Middleman
module Renderers
# Markdown renderer
module Markdown
# Setup extension
class << self
# Once registered
def registered(app)
# Set our preference for a markdown engine
app.config.define_setting :markdown_engine, :kramdown, 'Preferred markdown engine'
app.config.define_setting :markdown_engine_prefix, ::Tilt, 'The parent module for markdown template engines'
app.before_configuration do
template_extensions :markdown => :html,
:mdown => :html,
:md => :html,
:mkd => :html,
:mkdn => :html
end
# Once configuration is parsed
app.after_configuration do
markdown_exts = %w(markdown mdown md mkd mkdn)
begin
# Look for the user's preferred engine
if config[:markdown_engine] == :redcarpet
require "middleman-core/renderers/redcarpet"
::Tilt.prefer(::Middleman::Renderers::RedcarpetTemplate, *markdown_exts)
MiddlemanRedcarpetHTML.middleman_app = self
elsif config[:markdown_engine] == :kramdown
require "middleman-core/renderers/kramdown"
::Tilt.prefer(::Middleman::Renderers::KramdownTemplate, *markdown_exts)
MiddlemanKramdownHTML.middleman_app = self
elsif !config[:markdown_engine].nil?
# Map symbols to classes
markdown_engine_klass = if config[:markdown_engine].is_a? Symbol
engine = config[:markdown_engine].to_s
engine = engine == "rdiscount" ? "RDiscount" : engine.camelize
config[:markdown_engine_prefix].const_get("#{engine}Template")
else
config[:markdown_engine_prefix]
end
# Tell tilt to use that engine
::Tilt.prefer(markdown_engine_klass, *markdown_exts)
end
rescue LoadError
logger.warn "Requested Markdown engine (#{config[:markdown_engine]}) not found. Maybe the gem needs to be installed and required?"
end
end
end
alias :included :registered
end
end
end
end