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# Redmine - project management software
# Copyright (C) 2006-2016 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
include Redmine::WikiFormatting::LinksHelper
alias :inline_auto_link :auto_link!
alias :inline_auto_mailto :auto_mailto!
# 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=false
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, false
before = ''
s = ''
after = ''
i = 0
l = 1
started = false
ended = false
text.scan(/(((?:.*?)(\A|\r?\n\s*\r?\n))(h(\d+)(#{A}#{C})\.(?::(\S+))?[ \t](.*?)$)|.*)/m).each do |all, content, lf, heading, level|
if heading.nil?
if ended
after << all
elsif started
s << all
else
before << all
end
break
end
i += 1
if ended
after << all
elsif i == index
l = level.to_i
before << content
s << heading
started = true
elsif i > index
s << content
if level.to_i > l
s << heading
else
after << heading
ended = true
end
else
before << all
end
end
sections = [before.strip, s.strip, after.strip]
sections.each {|section| smooth_offtags_without_code_highlighting section}
sections
end
private
# Patch for RedCloth. Fixed in RedCloth r128 but _why hasn't released it yet.
# <a href="http://code.whytheluckystiff.net/redcloth/changeset/128">http://code.whytheluckystiff.net/redcloth/changeset/128</a>
def hard_break( text )
text.gsub!( /(.)\n(?!\n|\Z| *([#*=]+(\s|$)|[{|]))/, "\\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)
language = $1
text = $2
if Redmine::SyntaxHighlighting.language_supported?(language)
content = "<code class=\"#{language} syntaxhl\">" +
Redmine::SyntaxHighlighting.highlight_by_language(text, language)
else
content = "<code>#{ERB::Util.h(text)}"
end
end
content
end
end
end
end
end
end
end
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