# Redmine - project management software # Copyright (C) 2006-2014 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 'cgi' module Redmine module WikiFormatting module Markdown class HTML < Redcarpet::Render::HTML include ActionView::Helpers::TagHelper def link(link, title, content) css = nil unless link && link.starts_with?('/') css = 'external' end content_tag('a', content.html_safe, :href => link, :title => title, :class => css) end def block_code(code, language) if language.present? "
" +
              Redmine::SyntaxHighlighting.highlight_by_language(code, language) +
              "
" else "
" + CGI.escapeHTML(code) + "
" end end end class Formatter def initialize(text) @text = text end def to_html(*args) html = formatter.render(@text) # restore wiki links eg. [[Foo]] html.gsub!(%r{\[(.*?)\]}) do "[[#{$2}]]" end # restore Redmine links with double-quotes, eg. version:"1.0" html.gsub!(/(\w):"(.+?)"/) do "#{$1}:\"#{$2}\"" end html end def get_section(index) section = extract_sections(index)[1] hash = Digest::MD5.hexdigest(section) return section, hash end def update_section(index, update, hash=nil) t = extract_sections(index) if hash.present? && hash != Digest::MD5.hexdigest(t[1]) raise Redmine::WikiFormatting::StaleSectionError end t[1] = update unless t[1].blank? t.reject(&:blank?).join "\n\n" end def extract_sections(index) sections = ['', '', ''] offset = 0 i = 0 l = 1 inside_pre = false @text.split(/(^(?:.+\r?\n\r?(?:\=+|\-+)|#+.+|~~~.*)\s*$)/).each do |part| level = nil if part =~ /\A~{3,}(\S+)?\s*$/ if $1 if !inside_pre inside_pre = true end else inside_pre = !inside_pre end elsif inside_pre # nop elsif part =~ /\A(#+).+/ level = $1.size elsif part =~ /\A.+\r?\n\r?(\=+|\-+)\s*$/ level = $1.include?('=') ? 1 : 2 end if level i += 1 if offset == 0 && i == index # entering the requested section offset = 1 l = level elsif offset == 1 && i > index && level <= l # leaving the requested section offset = 2 end end sections[offset] << part end sections.map(&:strip) end private def formatter @@formatter ||= Redcarpet::Markdown.new( Redmine::WikiFormatting::Markdown::HTML.new( :filter_html => true, :hard_wrap => true ), :autolink => true, :fenced_code_blocks => true, :space_after_headers => true, :tables => true, :strikethrough => true, :superscript => true ) end end end end end