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require 'redcloth'
require 'coderay'
require 'pp'
module Redmine
module WikiFormatting
private
class TextileFormatter < RedCloth
RULES = [:inline_auto_link, :inline_auto_mailto, :textile, :inline_toc]
def initialize(*args)
super
self.hard_breaks=true
end
def to_html
@toc = []
super(*RULES).to_s
end
private
# Patch for RedCloth. Fixed in RedCloth r128 but _why hasn't released it yet.
# <a href="http://code.whytheluckystiff.net/redcloth/changeset/128">http://code.whytheluckystiff.net/redcloth/changeset/128</a>
def hard_break( text )
text.gsub!( /(.)\n(?!\n|\Z| *([#*=]+(\s|$)|[{|]))/, "\\1<br />" ) if hard_breaks
end
# Patch to add code highlighting support to RedCloth
def smooth_offtags( text )
unless @pre_list.empty?
## replace <pre> content
text.gsub!(/<redpre#(\d+)>/) do
content = @pre_list[$1.to_i]
if content.match(/<code\s+class="(\w+)">\s?(.+)/m)
content = "<code class=\"#{$1} CodeRay\">" +
CodeRay.scan($2, $1).html(:escape => false, :line_numbers => :inline)
end
content
end
end
end
# Patch to add 'table of content' support to RedCloth
def textile_p_withtoc(tag, atts, cite, content)
if tag =~ /^h(\d)$/
@toc << [$1.to_i, content]
end
content = "<a name=\"#{@toc.length}\" class=\"wiki-page\"></a>" + content
textile_p(tag, atts, cite, content)
end
alias :textile_h1 :textile_p_withtoc
alias :textile_h2 :textile_p_withtoc
alias :textile_h3 :textile_p_withtoc
def inline_toc(text)
text.gsub!(/<p>\{\{([<>]?)toc\}\}<\/p>/i) do
div_class = 'toc'
div_class << ' right' if $1 == '>'
out = "<div class=\"#{div_class}\">"
@toc.each_with_index do |heading, index|
# remove wiki links from the item
toc_item = heading.last.gsub(/(\[\[|\]\])/, '')
out << "<a href=\"##{index+1}\" class=\"heading#{heading.first}\">#{toc_item}</a>"
end
out << '</div>'
out
end
end
AUTO_LINK_RE = %r{
( # leading text
<\w+.*?>| # leading HTML tag, or
[^=<>!:'"/]| # leading punctuation, or
^ # beginning of line
)
(
(?:https?://)| # protocol spec, or
(?:www\.) # www.*
)
(
(\S+?) # url
(\/)? # slash
)
([^\w\=\/;]*?) # post
(?=<|\s|$)
}x unless const_defined?(:AUTO_LINK_RE)
# Turns all urls into clickable links (code from Rails).
def inline_auto_link(text)
text.gsub!(AUTO_LINK_RE) do
all, leading, proto, url, post = $&, $1, $2, $3, $6
if leading =~ /<a\s/i || leading =~ /![<>=]?/
# don't replace URL's that are already linked
# and URL's prefixed with ! !> !< != (textile images)
all
else
%(#{leading}<a href="#{proto=="www."?"http://www.":proto}#{url}">#{proto + url}</a>#{post})
end
end
end
# Turns all email addresses into clickable links (code from Rails).
def inline_auto_mailto(text)
text.gsub!(/([\w\.!#\$%\-+.]+@[A-Za-z0-9\-]+(\.[A-Za-z0-9\-]+)+)/) do
text = $1
%{<a href="mailto:#{$1}" class="email">#{text}</a>}
end
end
end
public
def self.to_html(text, options = {})
TextileFormatter.new(text).to_html
end
end
end
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