Class: Nokogiri::XML::DocumentFragment

Inherits:
Node
  • Object
show all
Defined in:
lib/nokogiri/xml/document_fragment.rb,
ext/nokogiri/xml_document_fragment.c

Direct Known Subclasses

HTML::DocumentFragment

Constant Summary

Constants inherited from Node

Node::ATTRIBUTE_DECL, Node::ATTRIBUTE_NODE, Node::CDATA_SECTION_NODE, Node::COMMENT_NODE, Node::DOCB_DOCUMENT_NODE, Node::DOCUMENT_FRAG_NODE, Node::DOCUMENT_NODE, Node::DOCUMENT_TYPE_NODE, Node::DTD_NODE, Node::ELEMENT_DECL, Node::ELEMENT_NODE, Node::ENTITY_DECL, Node::ENTITY_NODE, Node::ENTITY_REF_NODE, Node::HTML_DOCUMENT_NODE, Node::NAMESPACE_DECL, Node::NOTATION_NODE, Node::PI_NODE, Node::TEXT_NODE, Node::XINCLUDE_END, Node::XINCLUDE_START

Constants included from Searchable

Searchable::LOOKS_LIKE_XPATH

Class Method Summary collapse

Instance Method Summary collapse

Methods inherited from Node

#<<, #<=>, #==, #>, #[], #[]=, #accept, #add_child, #add_class, #add_namespace_definition, #add_next_sibling, #add_previous_sibling, #after, #ancestors, #append_class, #attribute, #attribute_nodes, #attribute_with_ns, #attributes, #before, #blank?, #canonicalize, #cdata?, #child, #children, #children=, #classes, #comment?, #content, #content=, #create_external_subset, #create_internal_subset, #css_path, #decorate!, #default_namespace=, #description, #do_xinclude, #document, #document?, #each, #element?, #element_children, #encode_special_chars, #external_subset, #first_element_child, #fragment, #fragment?, #html?, #inner_html, #inner_html=, #internal_subset, #key?, #keys, #lang, #lang=, #last_element_child, #line, #matches?, #namespace, #namespace=, #namespace_definitions, #namespace_scopes, #namespaced_key?, #namespaces, #native_content=, #next_element, #next_sibling, #node_name, #node_name=, #node_type, #parent, #parent=, #parse, #path, #pointer_id, #prepend_child, #previous_element, #previous_sibling, #processing_instruction?, #read_only?, #remove_attribute, #remove_class, #replace, #swap, #text?, #traverse, #unlink, #values, #wrap, #write_html_to, #write_to, #write_xhtml_to, #write_xml_to, #xml?

Methods included from Searchable

#at, #at_css, #at_xpath, #xpath

Methods included from PP::Node

#inspect, #pretty_print

Constructor Details

#initialize(document, tags = nil, ctx = nil) ⇒ DocumentFragment

Create a new DocumentFragment from tags.

If +ctx+ is present, it is used as a context node for the
subtree created, e.g., namespaces will be resolved relative
to +ctx+.

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# File 'lib/nokogiri/xml/document_fragment.rb', line 10

def initialize document, tags = nil, ctx = nil
  return self unless tags

  children = if ctx
               # Fix for issue#490
               if Nokogiri.jruby?
                 # fix for issue #770
                 ctx.parse("<root #{namespace_declarations(ctx)}>#{tags}</root>").children
               else
                 ctx.parse(tags)
               end
             else
               XML::Document.parse("<root>#{tags}</root>") \
                 .xpath("/root/node()")
             end
  children.each { |child| child.parent = self }
end

Class Method Details

.new(document) ⇒ Object

Create a new DocumentFragment element on the document


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# File 'ext/nokogiri/xml_document_fragment.c', line 9

static VALUE new(int argc, VALUE *argv, VALUE klass)
{
  xmlDocPtr xml_doc;
  xmlNodePtr node;
  VALUE document;
  VALUE rest;
  VALUE rb_node;

  rb_scan_args(argc, argv, "1*", &document, &rest);

  Data_Get_Struct(document, xmlDoc, xml_doc);

  node = xmlNewDocFragment(xml_doc->doc);

  nokogiri_root_node(node);

  rb_node = Nokogiri_wrap_xml_node(klass, node);
  rb_obj_call_init(rb_node, argc, argv);

  if(rb_block_given_p()) rb_yield(rb_node);

  return rb_node;
}

.parse(tags) ⇒ Object

Create a Nokogiri::XML::DocumentFragment from tags


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# File 'lib/nokogiri/xml/document_fragment.rb', line 129

def parse tags
  self.new(XML::Document.new, tags)
end

Instance Method Details

#css(*args) ⇒ Object

call-seq: css *rules, [namespace-bindings, custom-pseudo-class]

Search this fragment for CSS rules. rules must be one or more CSS selectors. For example:

For more information see Nokogiri::XML::Searchable#css


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# File 'lib/nokogiri/xml/document_fragment.rb', line 93

def css *args
  if children.any?
    children.css(*args) # 'children' is a smell here
  else
    NodeSet.new(document)
  end
end

#dupObject


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# File 'lib/nokogiri/xml/document_fragment.rb', line 29

def dup
  new_document = document.dup
  new_fragment = self.class.new(new_document)
  children.each do |child|
    child.dup(1, new_document).parent = new_fragment
  end
  new_fragment
end

#errorsObject

A list of Nokogiri::XML::SyntaxError found when parsing a document


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# File 'lib/nokogiri/xml/document_fragment.rb', line 135

def errors
  document.errors
end

#errors=(things) ⇒ Object

:nodoc:


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# File 'lib/nokogiri/xml/document_fragment.rb', line 139

def errors= things # :nodoc:
  document.errors = things
end

#nameObject

return the name for DocumentFragment


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# File 'lib/nokogiri/xml/document_fragment.rb', line 41

def name
  '#document-fragment'
end

#search(*rules) ⇒ Object

call-seq: search *paths, [namespace-bindings, xpath-variable-bindings, custom-handler-class]

Search this fragment for paths. paths must be one or more XPath or CSS queries.

For more information see Nokogiri::XML::Searchable#search


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# File 'lib/nokogiri/xml/document_fragment.rb', line 112

def search *rules
  rules, handler, ns, binds = extract_params(rules)

  rules.inject(NodeSet.new(document)) do |set, rule|
    set += if rule =~ Searchable::LOOKS_LIKE_XPATH
             xpath(*([rule, ns, handler, binds].compact))
           else
             children.css(*([rule, ns, handler].compact)) # 'children' is a smell here
           end
  end
end

#to_html(*args) ⇒ Object

Convert this DocumentFragment to html See Nokogiri::XML::NodeSet#to_html


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# File 'lib/nokogiri/xml/document_fragment.rb', line 54

def to_html *args
  if Nokogiri.jruby?
    options = args.first.is_a?(Hash) ? args.shift : {}
    if !options[:save_with]
      options[:save_with] = Node::SaveOptions::NO_DECLARATION | Node::SaveOptions::NO_EMPTY_TAGS | Node::SaveOptions::AS_HTML
    end
    args.insert(0, options)
  end
  children.to_html(*args)
end

#to_sObject Also known as: serialize

Convert this DocumentFragment to a string


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# File 'lib/nokogiri/xml/document_fragment.rb', line 47

def to_s
  children.to_s
end

#to_xhtml(*args) ⇒ Object

Convert this DocumentFragment to xhtml See Nokogiri::XML::NodeSet#to_xhtml


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# File 'lib/nokogiri/xml/document_fragment.rb', line 68

def to_xhtml *args
  if Nokogiri.jruby?
    options = args.first.is_a?(Hash) ? args.shift : {}
    if !options[:save_with]
      options[:save_with] = Node::SaveOptions::NO_DECLARATION | Node::SaveOptions::NO_EMPTY_TAGS | Node::SaveOptions::AS_XHTML
    end
    args.insert(0, options)
  end
  children.to_xhtml(*args)
end

#to_xml(*args) ⇒ Object

Convert this DocumentFragment to xml See Nokogiri::XML::NodeSet#to_xml


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# File 'lib/nokogiri/xml/document_fragment.rb', line 82

def to_xml *args
  children.to_xml(*args)
end