for_redcloth.rb
94 lines
| 2.9 KiB
| text/x-ruby
|
RubyLexer
Jean-Philippe Lang
|
r3478 | module CodeRay | |
| # A little hack to enable CodeRay highlighting in RedCloth. | |||
| # | |||
| # Usage: | |||
| # require 'coderay' | |||
| # require '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. | |||
| module ForRedCloth | |||
| def self.install | |||
| gem 'RedCloth', '>= 4.0.3' if defined? gem | |||
| require 'redcloth' | |||
| unless RedCloth::VERSION.to_s >= '4.0.3' | |||
| if defined? gem | |||
| raise 'CodeRay.for_redcloth needs RedCloth version 4.0.3 or later. ' + | |||
| "You have #{RedCloth::VERSION}. Please gem install RedCloth." | |||
| else | |||
| $".delete 'redcloth.rb' # sorry, but it works | |||
| require 'rubygems' | |||
| return install # retry | |||
| end | |||
| end | |||
| unless RedCloth::VERSION.to_s >= '4.2.2' | |||
| warn 'CodeRay.for_redcloth works best with RedCloth version 4.2.2 or later.' | |||
| end | |||
| RedCloth::TextileDoc.send :include, ForRedCloth::TextileDoc | |||
| RedCloth::Formatters::HTML.module_eval do | |||
| def unescape(html) | |||
| replacements = { | |||
| '&' => '&', | |||
| '"' => '"', | |||
| '>' => '>', | |||
| '<' => '<', | |||
| } | |||
| html.gsub(/&(?:amp|quot|[gl]t);/) { |entity| replacements[entity] } | |||
| end | |||
| undef code, bc_open, bc_close, escape_pre | |||
| def code(opts) # :nodoc: | |||
| opts[:block] = true | |||
| if !opts[:lang] && RedCloth::VERSION.to_s >= '4.2.0' | |||
| # simulating pre-4.2 behavior | |||
| if opts[:text].sub!(/\A\[(\w+)\]/, '') | |||
| if CodeRay::Scanners[$1].plugin_id == 'plaintext' | |||
| opts[:text] = $& + opts[:text] | |||
| else | |||
| opts[:lang] = $1 | |||
| end | |||
| end | |||
| end | |||
| if opts[:lang] && !filter_coderay | |||
| require 'coderay' | |||
| @in_bc ||= nil | |||
| format = @in_bc ? :div : :span | |||
| opts[:text] = unescape(opts[:text]) unless @in_bc | |||
| highlighted_code = CodeRay.encode opts[:text], opts[:lang], format, :stream => true | |||
| highlighted_code.sub!(/\A<(span|div)/) { |m| m + pba(@in_bc || opts) } | |||
| highlighted_code | |||
| else | |||
| "<code#{pba(opts)}>#{opts[:text]}</code>" | |||
| end | |||
| end | |||
| def bc_open(opts) # :nodoc: | |||
| opts[:block] = true | |||
| @in_bc = opts | |||
| opts[:lang] ? '' : "<pre#{pba(opts)}>" | |||
| end | |||
| def bc_close(opts) # :nodoc: | |||
| opts = @in_bc | |||
| @in_bc = nil | |||
| opts[:lang] ? '' : "</pre>\n" | |||
| end | |||
| def escape_pre(text) | |||
| if @in_bc ||= nil | |||
| text | |||
| else | |||
| html_esc(text, :html_escape_preformatted) | |||
| end | |||
| end | |||
| end | |||
| end | |||
| module TextileDoc # :nodoc: | |||
| attr_accessor :filter_coderay | |||
| end | |||
| end | |||
| end | |||
| CodeRay::ForRedCloth.install |