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# A little hack to enable CodeRay highlighting in RedCloth.
module CodeRay
# A little hack to enable CodeRay highlighting in RedCloth.
#
# Usage:
# require 'coderay'
# CodeRay.for_redcloth
# RedCloth.new('@[ruby]puts "Hello, World!"@').to_html
#
# Make sure you have RedCloth 4.0.3 activated, for example by calling
# require 'rubygems'
# before RedCloth is loaded and before calling CodeRay.for_redcloth.
def self.for_redcloth
gem 'RedCloth', '>= 4.0.3' rescue nil
require 'redcloth'
raise 'CodeRay.for_redcloth needs RedCloth 4.0.3 or later.' unless RedCloth::VERSION.to_s >= '4.0.3'
RedCloth::TextileDoc.send :include, ForRedCloth::TextileDoc
RedCloth::Formatters::HTML.module_eval do
undef_method :code, :bc_open, :bc_close
def code(opts)
opts[:block] = true
if opts[:lang] && !filter_coderay
require 'coderay'
@in_bc ||= nil
format = @in_bc ? :div : :span
highlighted_code = CodeRay.encode opts[:text], opts[:lang], format, :stream => true
highlighted_code.sub(/\A<(span|div)/) { |m| m + pba(@in_bc || opts) }
else
"<code#{pba(opts)}>#{opts[:text]}</code>"
end
end
def bc_open(opts)
opts[:block] = true
@in_bc = opts
opts[:lang] ? '' : "<pre#{pba(opts)}>"
end
def bc_close(opts)
@in_bc = nil
opts[:lang] ? '' : "</pre>\n"
end
end
end
module ForRedCloth # :nodoc:
module TextileDoc # :nodoc:
attr_accessor :filter_coderay
end
end
end
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