Class: SlackMarkdown::Filters::StrikeFilter

Inherits:
HTML::Pipeline::Filter
  • Object
show all
Includes:
IgnorableAncestorTags
Defined in:
lib/slack_markdown/filters/strike_filter.rb

Constant Summary collapse

STRIKE_PATTERN = 
/(?<=^|\W)~(.+)~(?=\W|$)/.freeze

Constants included from IgnorableAncestorTags

IgnorableAncestorTags::DEFAULT_IGNORED_ANCESTOR_TAGS

Instance Method Summary collapse

Methods included from IgnorableAncestorTags

#ignored_ancestor_tags

Instance Method Details

#call ⇒ Object 



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# File 'lib/slack_markdown/filters/strike_filter.rb', line 11

def call
  doc.search('.//text()').each do |node|
    content = node.to_html
    next if has_ancestor?(node, ignored_ancestor_tags)
    next unless content.include?('~')

    html = strike_filter(content)
    next if html == content

    node.replace(html)
  end
  doc
end

#strike_filter(text) ⇒ Object 



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# File 'lib/slack_markdown/filters/strike_filter.rb', line 25

def strike_filter(text)
  text.gsub(STRIKE_PATTERN) do
    "<strike>#{Regexp.last_match(1)}</strike>"
  end
end