Module: Markbridge::Normalizer::TextProjection

Defined in:
lib/markbridge/normalizer/text_projection.rb

Overview

Best-effort plain-text projection of a subtree, used by the :textify strategy. Concatenates text content; renders a AST::Mention as its literal @name, and opaque leaf nodes as their alt/raw text when they carry one, otherwise the empty string.

Class Method Summary collapse

Class Method Details

.call(node) ⇒ String

Parameters:

Returns:

  • (String) 


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# File 'lib/markbridge/normalizer/text_projection.rb', line 13

def call(node)
  case node
  when AST::Text, AST::MarkdownText
    node.text
  when AST::Mention
    "@#{node.name}"
  when AST::Element
    node.children.map { |child| call(child) }.join
  else
    leaf_text(node)
  end
end

.leaf_text(node) ⇒ String

Parameters:

  • node (AST::Node) —

    an opaque leaf (Upload, Attachment, …)

Returns:

  • (String) 


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# File 'lib/markbridge/normalizer/text_projection.rb', line 28

def leaf_text(node)
  return node.alt if node.respond_to?(:alt) && node.alt
  return node.raw if node.respond_to?(:raw) && node.raw

  ""
end