Module: Html2rss::SST::Text

Defined in:
lib/html2rss/sst/text.rb

Overview

Visible-text extraction for SST nodes (port of Navigator::TextExtractor).

Class Method Summary collapse

Class Method Details

.extract(node, separator: ' ', exclude: nil) ⇒ String?

Parameters:

  • node (Node)
  • separator (String) (defaults to: ' ')
  • exclude (Array<Node>, nil) (defaults to: nil)

Returns:

  • (String, nil)

Raises:

  • (ArgumentError) 


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# File 'lib/html2rss/sst/text.rb', line 15

def extract(node, separator: ' ', exclude: nil) # rubocop:disable Metrics/AbcSize, Metrics/CyclomaticComplexity, Metrics/MethodLength
  raise ArgumentError, 'node is required' unless node

  excluded = exclude&.each_with_object({}.compare_by_identity) { |n, h| h[n] = true }
  if node.children.empty?
    text = node.own_text.to_s.gsub(/\s+/, ' ').strip
    return text.empty? ? nil : text
  end

  parts = collect_parts(node, separator, excluded)
  own = node.own_text.to_s.gsub(/\s+/, ' ').strip
  parts = [own, *parts] unless own.empty?
  return if parts.empty?

  parts.join.squeeze(' ').strip
end