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Commit9a0a579

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Merge pull request#209 from increments/add-inline-math-filter
Add inline math filter
2 parents32910bf +aed13f4 commit9a0a579

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4 files changed

+122
-0
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4 files changed

+122
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‎lib/qiita/markdown.rb‎

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@@ -36,6 +36,7 @@
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require"qiita/markdown/filters/html_toc"
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require"qiita/markdown/filters/image_link"
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require"qiita/markdown/filters/inline_code_color"
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require"qiita/markdown/filters/inline_math"
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require"qiita/markdown/filters/mention"
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require"qiita/markdown/filters/qiita_marker"
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require"qiita/markdown/filters/simplify"
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# frozen_string_literal: true
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moduleQiita
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moduleMarkdown
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moduleFilters
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classInlineMath <HTML::Pipeline::Filter
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defcall
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doc.search(".//code").eachdo |code|
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opening=code.previous
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closing=code.next
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replace_with_math_span(code,opening,closing)ifinline_math_code?(opening,closing)
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end
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doc
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end
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private
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definline_math_code?(opening,closing)
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opening.present? &&closing.present? &&valid_opening?(opening) &&valid_closing?(closing)
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end
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defvalid_opening?(opening)
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opening.text? &&opening.content.end_with?("$") && !opening.content.end_with?("$$")
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end
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defvalid_closing?(closing)
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closing.text? &&closing.content.start_with?("$") && !closing.content.start_with?("$$")
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end
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defreplace_with_math_span(code,opening,closing)
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span=Nokogiri::XML::Node.new("span",doc)
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span.add_child(Nokogiri::XML::Text.new("$#{code.text}$",doc))
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code.replace(span)
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opening.content=opening.content.delete_suffix("$")
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opening.removeifopening.content.empty?
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closing.content=closing.content.delete_prefix("$")
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closing.removeifclosing.content.empty?
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end
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end
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end
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end
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end

‎lib/qiita/markdown/processor.rb‎

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@@ -24,6 +24,7 @@ def self.default_filters
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Filters::GroupMention,
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Filters::ExternalLink,
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Filters::InlineCodeColor,
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Filters::InlineMath,
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Filters::FinalSanitizer,
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]
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end
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# frozen_string_literal: true
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describeQiita::Markdown::Filters::InlineMathdo
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subject(:filter)do
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described_class.new(html)
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end
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context"with dollar signs"do
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let(:html)do
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<<~HTML
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<div>
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$<code>A = B</code>$
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</div>
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HTML
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end
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it"replaces <code> to <span> with dollars"do
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expect(filter.call.to_html).toeq(
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<<~HTML,
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<div>
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<span>$A = B$</span>
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</div>
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HTML
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)
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end
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end
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context"with dollar signs with surrounding text"do
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let(:html)do
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<<~HTML
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<div>
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Some text before$<code>A = B</code>$Some text after
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</div>
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HTML
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end
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it"replaces <code> to <span> with dollars"do
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expect(filter.call.to_html).toeq(
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<<~HTML,
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<div>
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Some text before<span>$A = B$</span>Some text after
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</div>
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HTML
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)
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end
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end
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context"with double dollar signs"do
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let(:html)do
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<<~HTML
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<div>
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$$
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<code>A = B</code>
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$$
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</div>
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HTML
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end
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it"does not replace <code>"do
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expect(filter.call.to_html).toeq(html)
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end
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end
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context"without dollar signs"do
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let(:html)do
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<<~HTML
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<div>
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<code>A = B</code>
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</div>
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HTML
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end
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it"does not replace <code>"do
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expect(filter.call.to_html).toeq(html)
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end
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end
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end

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