Class: Nexmo::Markdown::CodeFilter

Inherits:
Banzai::Filter
  • Object
show all
Includes:
Nexmo::Markdown::Concerns::PrismCodeSnippet
Defined in:
lib/nexmo_markdown_renderer/filters/code_filter.rb

Instance Method Summary collapse

Methods included from Nexmo::Markdown::Concerns::PrismCodeSnippet

#code_language_to_prism, #code_snippet_body, #prism_css_classes

Instance Method Details

#call(input) ⇒ Object 



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# File 'lib/nexmo_markdown_renderer/filters/code_filter.rb', line 6

def call(input)
  input.gsub(/(?!.*snippet)```code(.+?)```/m) do |_s|
    config = YAML.safe_load($1)

    if config['config']
      configs = YAML.load_file("#{Nexmo::Markdown::Config.docs_base_path}/config/code_examples.yml")
      config = config['config'].split('.').inject(configs) { |h, k| h[k] }
    end

    code = File.read("#{Nexmo::Markdown::Config.docs_base_path}/#{config['source']}")
    language = File.extname("#{Nexmo::Markdown::Config.docs_base_path}/#{config['source']}")[1..-1]
    lexer = language_to_lexer(language)

    total_lines = code.lines.count

    # Minus one since lines are not zero-indexed
    from_line = (config['from_line'] || 1) - 1
    to_line = (config['to_line'] || total_lines) - 1

    code = code.lines[from_line..to_line].join
    code.unindent! if config['unindent']

    highlighted_source = highlight(code, lexer)

    code_snippet_body(lexer, highlighted_source)
  end
end