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# Redmine - project management software
# Copyright (C) 2006-2011 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 'digest/md5'
module Redmine
module WikiFormatting
module Textile
class Formatter < RedCloth3
include ActionView::Helpers::TagHelper
# 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]
def initialize(*args)
super
self.hard_breaks=true
self.no_span_caps=true
self.filter_styles=true
end
def to_html(*rules)
@toc = []
super(*RULES).to_s
end
def get_section(index)
section = extract_sections(index)[1]
hash = Digest::MD5.hexdigest(section)
return section, hash
end
def update_section(index, update, hash=nil)
t = extract_sections(index)
if hash.present? && hash != Digest::MD5.hexdigest(t[1])
raise Redmine::WikiFormatting::StaleSectionError
end
t[1] = update unless t[1].blank?
t.reject(&:blank?).join "\n\n"
end
def extract_sections(index)
@pre_list = []
text = self.dup
rip_offtags text, false
before = ''
s = ''
after = ''
i = 0
l = 1
started = false
ended = false
text.scan(/(((?:.*?)(\A|\r?\n\r?\n))(h(\d+)(#{A}#{C})\.(?::(\S+))? (.*?)$)|.*)/m).each do |all, content, lf, heading, level|
if heading.nil?
if ended
after << all
elsif started
s << all
else
before << all
end
break
end
i += 1
if ended
after << all
elsif i == index
l = level.to_i
before << content
s << heading
started = true
elsif i > index
s << content
if level.to_i > l
s << heading
else
after << heading
ended = true
end
else
before << all
end
end
sections = [before.strip, s.strip, after.strip]
sections.each {|section| smooth_offtags_without_code_highlighting section}
sections
end
private
# Patch for RedCloth. Fixed in RedCloth r128 but _why hasn't released it yet.
# <a href="http://code.whytheluckystiff.net/redcloth/changeset/128">http://code.whytheluckystiff.net/redcloth/changeset/128</a>
def hard_break( text )
text.gsub!( /(.)\n(?!\n|\Z| *([#*=]+(\s|$)|[{|]))/, "\\1<br />" ) if hard_breaks
end
alias :smooth_offtags_without_code_highlighting :smooth_offtags
# 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} syntaxhl\">" +
Redmine::SyntaxHighlighting.highlight_by_language($2, $1)
end
content
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
tag = content_tag('a', proto + url, :href => "#{proto=="www."?"http://www.":proto}#{url}", :class => 'external')
%(#{leading}#{tag}#{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
content_tag('a', mail, :href => "mailto:#{mail}", :class => "email")
end
end
end
end
end
end
end
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