Class: Banzai::Filter::MathFilter

Inherits:
HTML::Pipeline::Filter
  • Object
show all
Defined in:
lib/banzai/filter/math_filter.rb

Overview

HTML filter that implements the original GitLab math syntax, one of three filters: DollarMathPreFilter, DollarMathPostFilter, and MathFilter

Constant Summary collapse

CSS_MATH =

Handle the $‘…`$ and “`math syntax in this filter. Also add necessary classes any existing math blocks.

'pre[data-canonical-lang="math"] > code'
XPATH_MATH = 
Gitlab::Utils::Nokogiri.css_to_xpath(CSS_MATH).freeze
CSS_CODE = 
'code'
XPATH_CODE = 
Gitlab::Utils::Nokogiri.css_to_xpath(CSS_CODE).freeze
CSS_INLINE_CODE = 
'code[data-math-style]'
XPATH_INLINE_CODE = 
Gitlab::Utils::Nokogiri.css_to_xpath(CSS_INLINE_CODE).freeze
STYLE_ATTRIBUTE =

Attribute indicating inline or display math.

'data-math-style'
TAG_CLASS =

Class used for tagging elements that should be rendered

'js-render-math'
MATH_CLASSES = 
"code math #{TAG_CLASS}"
DOLLAR_SIGN = 
'$'
RENDER_NODES_LIMIT =

Limit to how many nodes can be marked as math elements. Prevents timeouts for large notes. For more information check: gitlab.com/gitlab-org/gitlab/-/issues/341832

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Instance Method Summary collapse

Instance Method Details

#call ⇒ Object 



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# File 'lib/banzai/filter/math_filter.rb', line 35

def call
  @nodes_count = 0

  process_existing
  process_dollar_backtick_inline
  process_math_codeblock

  doc
end