Class: Nokogiri::HTML5::DocumentFragment

Inherits:
Nokogiri::HTML4::DocumentFragment
  • Object
show all
Defined in:
lib/nokogiri/html5/document_fragment.rb

Overview

Since v1.12.0

💡 HTML5 functionality is not available when running JRuby.

Instance Attribute Summary collapse

Class Method Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(doc, input = nil, context_ = nil, positional_options_hash = nil, context: context_, **options) ⇒ DocumentFragment

:call-seq:

new(document, input, **options) → HTML5::DocumentFragment

Parse HTML5 fragment input from a String, and return a new HTML5::DocumentFragment.

💡 It's recommended to use either HTML5::DocumentFragment.parse or HTML5::Node#fragment rather than call this method directly.

[Required Parameters]

  • document (HTML5::Document) The parent document to associate the returned fragment with.

[Optional Parameters]

  • input (String) The content to be parsed.

[Optional Keyword Arguments]

  • encoding: (String | Encoding) The encoding, or name of the encoding, that should be used when processing the document. When not provided, the encoding will be determined based on the document content. Also see Nokogiri::HTML5 for a longer explanation of how encoding is handled by the parser.

  • context: (String | Nokogiri::XML::Node) The node, or the name of an HTML5 element, in which to parse the document fragment. (default "body")

  • max_errors: (Integer) The maximum number of parse errors to record. (default Nokogiri::Gumbo::DEFAULT_MAX_ERRORS which is currently 0)

  • max_tree_depth: (Integer) The maximum depth of the parse tree. (default Nokogiri::Gumbo::DEFAULT_MAX_TREE_DEPTH)

  • max_attributes: (Integer) The maximum number of attributes allowed on an element. (default Nokogiri::Gumbo::DEFAULT_MAX_ATTRIBUTES)

  • parse_noscript_content_as_text: (Boolean) Whether to parse the content of noscript elements as text. (default false)

See rdoc-ref:HTML5@Parsing+options for a complete description of these parsing options.

[Returns] HTML5::DocumentFragment

Context Node

If a context node is specified using context:, then the parser will behave as if that Node, or a hypothetical tag named as specified, is the parent of the fragment subtree.



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# File 'lib/nokogiri/html5/document_fragment.rb', line 144

def initialize(
  doc, input = nil,
  context_ = nil, positional_options_hash = nil,
  context: context_,
  **options
) # rubocop:disable Lint/MissingSuper
  unless positional_options_hash.nil? || positional_options_hash.empty?
    options.merge!(positional_options_hash)
  end

  @document = doc
  @errors = []
  return self unless input

  input = Nokogiri::HTML5.read_and_encode(input, nil)

  context = options.delete(:context) if options.key?(:context)

  options[:max_attributes] ||= Nokogiri::Gumbo::DEFAULT_MAX_ATTRIBUTES
  options[:max_errors] ||= options.delete(:max_parse_errors) || Nokogiri::Gumbo::DEFAULT_MAX_ERRORS
  options[:max_tree_depth] ||= Nokogiri::Gumbo::DEFAULT_MAX_TREE_DEPTH

  Nokogiri::Gumbo.fragment(self, input, context, **options)
end

Instance Attribute Details

#document ⇒ Object

Returns the value of attribute document.



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# File 'lib/nokogiri/html5/document_fragment.rb', line 88

def document
  @document
end

#errors ⇒ Object

Returns the value of attribute errors.



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# File 'lib/nokogiri/html5/document_fragment.rb', line 89

def errors
  @errors
end

#quirks_mode ⇒ Object (readonly)

Get the parser's quirks mode value. See HTML5::QuirksMode.

This method returns nil if the parser was not invoked (e.g., Nokogiri::HTML5::DocumentFragment.new(doc)).

Since v1.14.0



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# File 'lib/nokogiri/html5/document_fragment.rb', line 97

def quirks_mode
  @quirks_mode
end

Class Method Details

.parse(input, encoding_ = nil, positional_options_hash = nil, encoding: encoding_, **options) ⇒ Object

:call-seq:

parse(input, **options) → HTML5::DocumentFragment

Parse HTML5 fragment input from a String, and return a new HTML5::DocumentFragment. This method creates a new, empty HTML5::Document to contain the fragment.

[Parameters]

  • input (String | IO) The HTML5 document fragment to parse.

[Optional Keyword Arguments]

  • encoding: (String | Encoding) The encoding, or name of the encoding, that should be used when processing the document. When not provided, the encoding will be determined based on the document content. Also see Nokogiri::HTML5 for a longer explanation of how encoding is handled by the parser.

  • context: (String | Nokogiri::XML::Node) The node, or the name of an HTML5 element, "in context" of which to parse the document fragment. See below for more information. (default "body")

  • max_errors: (Integer) The maximum number of parse errors to record. (default Nokogiri::Gumbo::DEFAULT_MAX_ERRORS which is currently 0)

  • max_tree_depth: (Integer) The maximum depth of the parse tree. (default Nokogiri::Gumbo::DEFAULT_MAX_TREE_DEPTH)

  • max_attributes: (Integer) The maximum number of attributes allowed on an element. (default Nokogiri::Gumbo::DEFAULT_MAX_ATTRIBUTES)

  • parse_noscript_content_as_text: (Boolean) Whether to parse the content of noscript elements as text. (default false)

See rdoc-ref:HTML5@Parsing+options for a complete description of these parsing options.

[Returns] Nokogiri::HTML5::DocumentFragment

Context Node

If a context node is specified using context:, then the parser will behave as if that Node, or a hypothetical tag named as specified, is the parent of the fragment subtree.



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# File 'lib/nokogiri/html5/document_fragment.rb', line 69

def parse(
  input,
  encoding_ = nil, positional_options_hash = nil,
  encoding: encoding_, **options
)
  unless positional_options_hash.nil? || positional_options_hash.empty?
    options.merge!(positional_options_hash)
  end

  context = options.delete(:context)

  document = HTML5::Document.new
  document.encoding = "UTF-8"
  input = HTML5.read_and_encode(input, encoding)

  new(document, input, context, options)
end

Instance Method Details

#extract_params(params) ⇒ Object

:nodoc:



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# File 'lib/nokogiri/html5/document_fragment.rb', line 175

def extract_params(params) # :nodoc:
  handler = params.find do |param|
    ![Hash, String, Symbol].include?(param.class)
  end
  params -= [handler] if handler

  hashes = []
  while Hash === params.last || params.last.nil?
    hashes << params.pop
    break if params.empty?
  end
  ns, binds = hashes.reverse

  ns ||=
    begin
      ns = {}
      children.each { |child| ns.merge!(child.namespaces) }
      ns
    end

  [params, handler, ns, binds]
end

#serialize(options = {}, &block) ⇒ Object

:nodoc:



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# File 'lib/nokogiri/html5/document_fragment.rb', line 169

def serialize(options = {}, &block) # :nodoc:
  # Bypass XML::Document.serialize which doesn't support options even
  # though XML::Node.serialize does!
  XML::Node.instance_method(:serialize).bind_call(self, options, &block)
end