50 lines
2 KiB
Ruby
50 lines
2 KiB
Ruby
module Middleman
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module Renderers
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# Markdown renderer
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class Markdown < ::Middleman::Extension
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# Once registered
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def initialize(app, options={}, &block)
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super
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# Set our preference for a markdown engine
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app.config.define_setting :markdown_engine, :kramdown, 'Preferred markdown engine'
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app.config.define_setting :markdown_engine_prefix, ::Tilt, 'The parent module for markdown template engines'
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end
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# Once configuration is parsed
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def after_configuration
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markdown_exts = %w(markdown mdown md mkd mkdn)
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begin
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# Look for the user's preferred engine
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if app.config[:markdown_engine] == :redcarpet
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require 'middleman-core/renderers/redcarpet'
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::Tilt.prefer(::Middleman::Renderers::RedcarpetTemplate, *markdown_exts)
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elsif app.config[:markdown_engine] == :kramdown
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require 'middleman-core/renderers/kramdown'
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::Tilt.prefer(::Middleman::Renderers::KramdownTemplate, *markdown_exts)
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elsif app.config[:markdown_engine]
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# Map symbols to classes
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markdown_engine_klass = if app.config[:markdown_engine].is_a? Symbol
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engine = app.config[:markdown_engine].to_s
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engine = engine == 'rdiscount' ? 'RDiscount' : engine.camelize
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app.config[:markdown_engine_prefix].const_get("#{engine}Template")
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else
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app.config[:markdown_engine_prefix]
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end
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# Tell tilt to use that engine
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::Tilt.prefer(markdown_engine_klass, *markdown_exts)
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end
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rescue LoadError
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# If they just left it at the default engine and don't happen to have it,
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# then they're using middleman-core bare and we shouldn't bother them.
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if app.config.setting(:markdown_engine).value_set?
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logger.warn "Requested Markdown engine (#{app.config[:markdown_engine]}) not found. Maybe the gem needs to be installed and required?"
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end
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end
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end
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end
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end
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end
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