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# Redmine - project management software
# Copyright (C) 2006-2008 Jean-Philippe Lang
#
# This program is free software; you can redistribute it and/or
# modify it under the terms of the GNU General Public License
# as published by the Free Software Foundation; either version 2
# of the License, or (at your option) any later version.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with this program; if not, write to the Free Software
# Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
require 'redcloth3'
require 'coderay'
module Redmine
module WikiFormatting
module Textile
class Formatter < RedCloth3
# auto_link rule after textile rules so that it doesn't break !image_url! tags
RULES = [:textile, :block_markdown_rule, :inline_auto_link, :inline_auto_mailto, :inline_toc, :inline_macros]
def initialize(*args)
super
self.hard_breaks=true
self.no_span_caps=true
self.filter_styles=true
end
def to_html(*rules, &block)
@toc = []
@macros_runner = block
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.downcase).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)
# removes wiki links from the item
toc_item = content.gsub(/(\[\[([^\]\|]*)(\|([^\]]*))?\]\])/) { $4 || $2 }
# removes styles
# eg. %{color:red}Triggers% => Triggers
toc_item.gsub! %r[%\{[^\}]*\}([^%]+)%], '\\1'
# replaces non word caracters by dashes
anchor = toc_item.gsub(%r{[^\w\s\-]}, '').gsub(%r{\s+(\-+\s*)?}, '-')
unless anchor.blank?
if tag =~ /^h(\d)$/
@toc << [$1.to_i, anchor, toc_item]
end
atts << " id=\"#{anchor}\""
content = content + "<a href=\"##{anchor}\" class=\"wiki-anchor\">¶</a>"
end
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 == '>'
div_class << ' left' if $1 == '<'
out = "<ul class=\"#{div_class}\">"
@toc.each do |heading|
level, anchor, toc_item = heading
out << "<li class=\"heading#{level}\"><a href=\"##{anchor}\">#{toc_item}</a></li>\n"
end
out << '</ul>'
out
end
end
MACROS_RE = /
(!)? # escaping
(
\{\{ # opening tag
([\w]+) # macro name
(\(([^\}]*)\))? # optional arguments
\}\} # closing tag
)
/x unless const_defined?(:MACROS_RE)
def inline_macros(text)
text.gsub!(MACROS_RE) do
esc, all, macro = $1, $2, $3.downcase
args = ($5 || '').split(',').each(&:strip)
if esc.nil?
begin
@macros_runner.call(macro, args)
rescue => e
"<div class=\"flash error\">Error executing the <strong>#{macro}</strong> macro (#{e})</div>"
end || all
else
all
end
end
end
AUTO_LINK_RE = %r{
( # leading text
<\w+.*?>| # leading HTML tag, or
[^=<>!:'"/]| # leading punctuation, or
^ # beginning of line
)
(
(?:https?://)| # protocol spec, or
(?:s?ftps?://)|
(?: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
# Idea below : an URL with unbalanced parethesis and
# ending by ')' is put into external parenthesis
if ( url[-1]==?) and ((url.count("(") - url.count(")")) < 0 ) )
url=url[0..-2] # discard closing parenth from url
post = ")"+post # add closing parenth to post
end
%(#{leading}<a class="external" 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
mail = $1
if text.match(/<a\b[^>]*>(.*)(#{Regexp.escape(mail)})(.*)<\/a>/)
mail
else
%{<a href="mailto:#{mail}" class="email">#{mail}</a>}
end
end
end
end
end
end
end
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