78 lines
2.8 KiB
Ruby
78 lines
2.8 KiB
Ruby
module GitlabMarkdownHelper
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# Replaces references (i.e. @abc, #123, !456, ...) in the text with links to
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# the appropriate items in Gitlab.
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#
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# text - the source text
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# html_options - extra options for the reference links as given to link_to
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#
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# note: reference links will only be generated if @project is set
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#
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# see Gitlab::Markdown for details on the supported syntax
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def gfm(text, html_options = {})
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return text if text.nil?
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return text if @project.nil?
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# Extract pre blocks so they are not altered
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# from http://github.github.com/github-flavored-markdown/
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extractions = {}
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text.gsub!(%r{<pre>.*?</pre>|<code>.*?</code>}m) do |match|
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md5 = Digest::MD5.hexdigest(match)
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extractions[md5] = match
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"{gfm-extraction-#{md5}}"
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end
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# TODO: add popups with additional information
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parser = Gitlab::Markdown.new(@project, html_options)
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text = parser.parse(text)
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# Insert pre block extractions
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text.gsub!(/\{gfm-extraction-(\h{32})\}/) do
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extractions[$1]
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end
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text.html_safe
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end
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# Use this in places where you would normally use link_to(gfm(...), ...).
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#
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# It solves a problem occurring with nested links (i.e.
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# "<a>outer text <a>gfm ref</a> more outer text</a>"). This will not be
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# interpreted as intended. Browsers will parse something like
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# "<a>outer text </a><a>gfm ref</a> more outer text" (notice the last part is
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# not linked any more). link_to_gfm corrects that. It wraps all parts to
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# explicitly produce the correct linking behavior (i.e.
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# "<a>outer text </a><a>gfm ref</a><a> more outer text</a>").
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def link_to_gfm(body, url, html_options = {})
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gfm_body = gfm(body, html_options)
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gfm_body.gsub!(%r{<a.*?>.*?</a>}m) do |match|
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"</a>#{match}#{link_to("", url, html_options)[0..-5]}" # "</a>".length +1
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end
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link_to(gfm_body.html_safe, url, html_options)
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end
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def markdown(text)
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unless @markdown
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gitlab_renderer = Redcarpet::Render::GitlabHTML.new(self,
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# see https://github.com/vmg/redcarpet#darling-i-packed-you-a-couple-renderers-for-lunch-
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filter_html: true,
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with_toc_data: true,
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hard_wrap: true)
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@markdown ||= Redcarpet::Markdown.new(gitlab_renderer,
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# see https://github.com/vmg/redcarpet#and-its-like-really-simple-to-use
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no_intra_emphasis: true,
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tables: true,
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fenced_code_blocks: true,
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autolink: true,
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strikethrough: true,
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lax_html_blocks: true,
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space_after_headers: true,
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superscript: true)
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end
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@markdown.render(text).html_safe
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end
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end
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