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# Redmine - project management software
# Copyright (C) 2006-2017 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
include Redmine::Helpers::URL
def link(link, title, content)
return nil unless uri_with_safe_scheme?(link)
css = nil
unless link && link.starts_with?('/')
css = 'external'
end
content_tag('a', content.to_s.html_safe, :href => link, :title => title, :class => css)
end
def block_code(code, language)
if language.present? && Redmine::SyntaxHighlighting.language_supported?(language)
"<pre><code class=\"#{CGI.escapeHTML language} syntaxhl\">" +
Redmine::SyntaxHighlighting.highlight_by_language(code, language) +
"</code></pre>"
else
"<pre>" + CGI.escapeHTML(code) + "</pre>"
end
end
def image(link, title, alt_text)
return unless uri_with_safe_scheme?(link)
tag('img', :src => link, :alt => alt_text || "", :title => title)
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{\[<a href="(.*?)">(.*?)</a>\]}) do
"[[#{$2}]]"
end
# restore Redmine links with double-quotes, eg. version:"1.0"
html.gsub!(/(\w):"(.+?)"/) do
"#{$1}:\"#{$2}\""
end
# restore user links with @ in login name eg. [@jsmith@somenet.foo]
html.gsub!(%r{[@\A]<a href="mailto:(.*?)">(.*?)</a>}) do
"@#{$2}"
end
html
end
def get_section(index)
section = extract_sections(index)[1]
hash = Digest::MD5.hexdigest(section)
return section, hash
end
def update_section(index, update, hash=nil)
t = extract_sections(index)
if hash.present? && hash != Digest::MD5.hexdigest(t[1])
raise Redmine::WikiFormatting::StaleSectionError
end
t[1] = update unless t[1].blank?
t.reject(&:blank?).join "\n\n"
end
def extract_sections(index)
sections = ['', '', '']
offset = 0
i = 0
l = 1
inside_pre = false
@text.split(/(^(?:.+\r?\n\r?(?:\=+|\-+)|#+.+|(?:~~~|```).*)\s*$)/).each do |part|
level = nil
if part =~ /\A(~{3,}|`{3,})(\S+)?\s*$/
if !inside_pre
inside_pre = true
elsif !$2
inside_pre = false
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,
:no_intra_emphasis => true,
:footnotes => true,
:lax_spacing => true
)
end
end
end
end
end
|
