gitlabhq/app/helpers/gitlab_markdown_helper.rb

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module GitlabMarkdownHelper
def gfm(text, html_options = {})
return text if text.nil?
return text if @project.nil?
# Extract pre blocks
# from http://github.github.com/github-flavored-markdown/
extractions = {}
text.gsub!(%r{<pre>.*?</pre>|<code>.*?</code>}m) do |match|
md5 = Digest::MD5.hexdigest(match)
extractions[md5] = match
"{gfm-extraction-#{md5}}"
end
# match 1 2 3 4 5 6
text.gsub!(/(\W)?(@([\w\._]+)|[#!$](\d+)|([\h]{6,40}))(\W)?/) do |match|
prefix = $1
reference = $2
user_name = $3
issue_id = $4
merge_request_id = $4
snippet_id = $4
commit_id = $5
suffix = $6
# TODO: add popups with additional information
ref_link = case reference
# team member: @foo
when /^@/
user = @project.users.where(:name => user_name).first
member = @project.users_projects.where(:user_id => user).first if user
link_to("@#{user_name}", project_team_member_path(@project, member), html_options.merge(:class => "gfm gfm-team_member #{html_options[:class]}")) if member
# issue: #123
when /^#/
# avoid HTML entities
unless prefix.try(:end_with?, "&") && suffix.try(:start_with?, ";")
issue = @project.issues.where(:id => issue_id).first
link_to("##{issue_id}", project_issue_path(@project, issue), html_options.merge(:title => "Issue: #{issue.title}", :class => "gfm gfm-issue #{html_options[:class]}")) if issue
end
# merge request: !123
when /^!/
merge_request = @project.merge_requests.where(:id => merge_request_id).first
link_to("!#{merge_request_id}", project_merge_request_path(@project, merge_request), html_options.merge(:title => "Merge Request: #{merge_request.title}", :class => "gfm gfm-merge_request #{html_options[:class]}")) if merge_request
# snippet: $123
when /^\$/
snippet = @project.snippets.where(:id => snippet_id).first
link_to("$#{snippet_id}", project_snippet_path(@project, snippet), html_options.merge(:title => "Snippet: #{snippet.title}", :class => "gfm gfm-snippet #{html_options[:class]}")) if snippet
# commit: 123456...
when /^\h/
commit = @project.commit(commit_id)
link_to(commit_id, project_commit_path(@project, :id => commit.id), html_options.merge(:title => "Commit: #{commit.author_name} - #{CommitDecorator.new(commit).title}", :class => "gfm gfm-commit #{html_options[:class]}")) if commit
end # case
ref_link.nil? ? match : "#{prefix}#{ref_link}#{suffix}"
end # gsub
# Insert pre block extractions
text.gsub!(/\{gfm-extraction-(\h{32})\}/) do
extractions[$1]
end
text.html_safe
end
# circumvents nesting links, which will behave bad in browsers
def link_to_gfm(body, url, html_options = {})
gfm_body = gfm(body, html_options)
gfm_body.gsub!(%r{<a.*?>.*?</a>}m) do |match|
"</a>#{match}#{link_to("", url, html_options)[0..-5]}" # "</a>".length +1
end
link_to(gfm_body.html_safe, url, html_options)
end
2012-08-08 10:52:09 +02:00
def markdown(text)
@__renderer ||= Redcarpet::Markdown.new(Redcarpet::Render::GitlabHTML.new(self, filter_html: true, with_toc_data: true), {
no_intra_emphasis: true,
tables: true,
fenced_code_blocks: true,
autolink: true,
strikethrough: true,
lax_html_blocks: true,
space_after_headers: true,
superscript: true
})
@__renderer.render(text).html_safe
end
end