29 lines
795 B
Ruby
29 lines
795 B
Ruby
# frozen_string_literal: true
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module Banzai
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module Filter
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class InlineDiffFilter < HTML::Pipeline::Filter
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IGNORED_ANCESTOR_TAGS = %w(pre code tt).to_set
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def call
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doc.search(".//text()").each do |node|
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next if has_ancestor?(node, IGNORED_ANCESTOR_TAGS)
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content = node.to_html
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html_content = inline_diff_filter(content)
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next if content == html_content
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node.replace(html_content)
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end
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doc
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end
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def inline_diff_filter(text)
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html_content = text.gsub(/(?:\[\-(.*?)\-\]|\{\-(.*?)\-\})/, '<span class="idiff left right deletion">\1\2</span>')
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html_content.gsub(/(?:\[\+(.*?)\+\]|\{\+(.*?)\+\})/, '<span class="idiff left right addition">\1\2</span>')
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end
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end
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end
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end
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