middleman/middleman-core/lib/middleman-core/renderers/markdown.rb
2014-03-20 17:12:41 -07:00

57 lines
2.2 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'
# 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)
elsif config[:markdown_engine] == :kramdown
require 'middleman-core/renderers/kramdown'
::Tilt.prefer(::Middleman::Renderers::KramdownTemplate, *markdown_exts)
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
# If they just left it at the default engine and don't happen to have it,
# then they're using middleman-core bare and we shouldn't bother them.
if config.setting(:markdown_engine).value_set?
logger.warn "Requested Markdown engine (#{config[:markdown_engine]}) not found. Maybe the gem needs to be installed and required?"
end
end
end
end
alias :included :registered
end
end
end
end