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# frozen_string_literal: true
# Redmine - project management software
# Copyright (C) 2006-2023 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 autolink(link, link_type)
if link_type == :email
link("mailto:#{link}", nil, link) || CGI.escapeHTML(link)
else
content = link
# Pretty printing: if we get an email address as an actual URI, e.g.
# `mailto:foo@bar.com`, we don't want to print the `mailto:` prefix
content = link[7..-1] if link.start_with?('mailto:')
link(link, nil, content) || CGI.escapeHTML(link)
end
end
def link(link, title, content)
return nil unless uri_with_link_safe_scheme?(link)
css = nil
unless link&.starts_with?('/') || link&.starts_with?('mailto:')
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)
html = Redmine::SyntaxHighlighting.highlight_by_language(code, language)
classattr = " class=\"#{CGI.escapeHTML language} syntaxhl\""
else
html = CGI.escapeHTML(code)
end
# original language for extension development
langattr = " data-language=\"#{CGI.escapeHTML language}\"" if language.present?
"<pre><code#{classattr}#{langattr}>#{html}</code></pre>"
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
include Redmine::WikiFormatting::LinksHelper
alias :inline_restore_redmine_links :restore_redmine_links
def initialize(text)
@text = text
end
def to_html(*args)
html = formatter.render(@text)
html = inline_restore_redmine_links(html)
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(/(^(?:\S+\r?\n\r?(?:\=+|\-+)|#+.+|(?:~~~|```).*)\s*$)/).each do |part|
level = nil
if part =~ /\A(~{3,}|`{3,})(\s*\S+)?\s*$/
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,
:underline => true
)
end
end
end
end
end
|
