instiki/lib/chunks/engines.rb

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$: << File.dirname(__FILE__) + "../../lib"
require_dependency 'chunks/chunk'
# The markup engines are Chunks that call the one of RedCloth
# or RDoc to convert text. This markup occurs when the chunk is required
# to mask itself.
module Engines
class AbstractEngine < Chunk::Abstract
# Create a new chunk for the whole content and replace it with its mask.
def self.apply_to(content)
new_chunk = self.new(content)
content.replace(new_chunk.mask)
end
private
# Never create engines by constructor - use apply_to instead
def initialize(content)
@content = content
end
end
class Textile < AbstractEngine
require 'sanitize'
include Sanitize
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def mask
require 'redcloth'
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redcloth = RedCloth.new(@content, [:hard_breaks] + @content.options[:engine_opts])
redcloth.filter_html = false
redcloth.no_span_caps = false
html = redcloth.to_html(:textile)
sanitize_xhtml(html)
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end
end
class Markdown < AbstractEngine
require 'sanitize'
include Sanitize
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def mask
require 'maruku'
require 'maruku/ext/math'
html = sanitize_rexml(Maruku.new(@content.delete("\r\x01-\x08\x0B\x0C\x0E-\x1F"),
{:math_enabled => false}).to_html_tree)
html.gsub(/\A<div class="maruku_wrapper_div">\n?(.*?)\n?<\/div>\Z/m, '\1')
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end
end
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class MarkdownMML < AbstractEngine
require 'sanitize'
include Sanitize
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def mask
require 'maruku'
require 'maruku/ext/math'
html = sanitize_rexml(Maruku.new(@content.delete("\r\x01-\x08\x0B\x0C\x0E-\x1F"),
{:math_enabled => true, :math_numbered => ['\\[','\\begin{equation}']}).to_html_tree)
html.gsub(/\A<div class="maruku_wrapper_div">\n?(.*?)\n?<\/div>\Z/m, '\1')
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end
end
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class Mixed < AbstractEngine
require 'sanitize'
include Sanitize
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def mask
require 'redcloth'
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redcloth = RedCloth.new(@content, @content.options[:engine_opts])
redcloth.filter_html = false
redcloth.no_span_caps = false
html = redcloth.to_html
sanitize_xhtml(html)
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end
end
class RDoc < AbstractEngine
require 'sanitize'
include Sanitize
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def mask
require_dependency 'rdocsupport'
html = RDocSupport::RDocFormatter.new(@content).to_html
sanitize_xhtml(html)
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end
end
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MAP = { :textile => Textile, :markdown => Markdown, :markdownMML => MarkdownMML, :mixed => Mixed, :rdoc => RDoc }
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MAP.default = Textile
end