Class: Moxml::Adapter::Oga

Inherits:
Base
  • Object
show all
Defined in:
lib/moxml/adapter/oga.rb

Defined Under Namespace

Classes: OgaSAXBridge

Constant Summary

Constants included from XmlUtils

XmlUtils::VALID_ELEMENT_NAMES

Class Method Summary collapse

Methods inherited from Base

actual_native, attribute_name, bare_get_qname_safe?, bare_set_qname_safe?, bulk_materialize?, children_accepts_entity_flag?, create_cdata, create_comment, create_declaration, create_doctype, create_element, create_entity_reference, create_namespace, create_processing_instruction, create_text, decode_entities, digest, entity_bearing?, expanded_attr_reads?, expanded_attr_value, free_document, in_scope_namespaces, iterparse, iterparse_file, line_number, materialize_fields, native_identity_stable?, native_inclusive10, parse_errors, parse_html, patch_node, patches_children?, plan_rows, preprocess_entities, restore_entities, same_node?, sax_supported?, serialize_generation, set_attribute_name, set_attribute_value, source_position, walk_descendants, wrap_native, wrappers_recyclable?

Methods included from XmlUtils

#encode_entities, #normalize_xml_value, #validate_comment_content, #validate_declaration_encoding, #validate_declaration_standalone, #validate_declaration_version, #validate_element_name, #validate_entity_reference_name, #validate_pi_target, #validate_prefix, #validate_uri

Class Method Details

.add_child(element, child_or_text) ⇒ Object 



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# File 'lib/moxml/adapter/oga.rb', line 380

def add_child(element, child_or_text)
  child =
    if child_or_text.is_a?(String)
      create_native_text(child_or_text)
    else
      child_or_text
    end

  if element.is_a?(::Oga::XML::Document) &&
      child.is_a?(::Oga::XML::XmlDeclaration)
    attachments.set(element, :xml_declaration, child)
    return
  end

  # Insert doctype before root element in document
  if element.is_a?(::Oga::XML::Document) && child.is_a?(::Oga::XML::Doctype)
    root_idx = nil
    element.children.each_with_index do |n, i|
      if n.is_a?(::Oga::XML::Element)
        root_idx = i
        break
      end
    end
    if root_idx
      element.children.insert(root_idx, child)
      return
    end
  end

  element.children << child
end

.add_next_sibling(node, sibling) ⇒ Object 



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# File 'lib/moxml/adapter/oga.rb', line 423

def add_next_sibling(node, sibling)
  if node.parent == sibling.parent
    # Oga doesn't manipulate children of the same parent
    dup_sibling = node.node_set.delete(sibling)
    index = node.node_set.index(node) + 1
    node.node_set.insert(index, dup_sibling)
  else
    node.after(sibling)
  end
end

.add_previous_sibling(node, sibling) ⇒ Object 



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# File 'lib/moxml/adapter/oga.rb', line 412

def add_previous_sibling(node, sibling)
  if node.parent == sibling.parent
    # Oga doesn't manipulate children of the same parent
    dup_sibling = node.node_set.delete(sibling)
    index = node.node_set.index(node)
    node.node_set.insert(index, dup_sibling)
  else
    node.before(sibling)
  end
end

.adjacent_to_entity_reference?(node) ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/moxml/adapter/oga.rb', line 259

def adjacent_to_entity_reference?(node)
  entity_ref?(node.previous) || entity_ref?(node.next)
end

.at_xpath(node, expression, namespaces = nil) ⇒ Object 



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# File 'lib/moxml/adapter/oga.rb', line 553

def at_xpath(node, expression, namespaces = nil)
  node.at_xpath(expression, namespaces: namespaces)
rescue ::Oga::XPath::Error => e
  raise Moxml::XPathError.new(
    e.message,
    expression: expression,
    adapter: "Oga",
    node: node,
  )
end

.attachments ⇒ Object 



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# File 'lib/moxml/adapter/oga.rb', line 19

def attachments
  @attachments ||= Moxml::NativeAttachment.new
end

.attribute_element(attr) ⇒ Object 



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# File 'lib/moxml/adapter/oga.rb', line 328

def attribute_element(attr)
  attr.element
end

.attributes(element) ⇒ Object 



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# File 'lib/moxml/adapter/oga.rb', line 332

def attributes(element)
  return [] unless element.is_a?(::Oga::XML::Element)

  # remove attributes-namespaces
  element.attributes.reject do |attr|
    attr.name == ::Oga::XML::Element::XMLNS_PREFIX || attr.namespace_name == ::Oga::XML::Element::XMLNS_PREFIX
  end
end

.cdata_content(node) ⇒ Object 



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# File 'lib/moxml/adapter/oga.rb', line 475

def cdata_content(node)
  node.text
end

.children(node, **_entity_bearing) ⇒ Object 



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# File 'lib/moxml/adapter/oga.rb', line 235

def children(node, **_entity_bearing)
  all_children = []

  if node.is_a?(::Oga::XML::Document)
    all_children += [node.xml_declaration,
                     node.doctype].compact
  end

  return all_children unless node.is_a?(::Oga::XML::Node) || node.is_a?(::Oga::XML::Document)

  child_nodes = node.children.to_a
  # Filter out whitespace-only text nodes at document level only.
  # Document-level whitespace (between <?xml?> and <root>) is
  # formatting, not content, and differs across adapters.
  # Whitespace inside elements (e.g. "FigureA.1" spacing) is
  # meaningful and must be preserved.
  if node.is_a?(::Oga::XML::Document)
    child_nodes = child_nodes.reject do |child|
      child.is_a?(::Oga::XML::Text) && child.text.strip.empty?
    end
  end
  all_children + child_nodes
end

.comment_content(node) ⇒ Object 



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# File 'lib/moxml/adapter/oga.rb', line 483

def comment_content(node)
  node.text
end

.create_document(_native_doc = nil) ⇒ Object 



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# File 'lib/moxml/adapter/oga.rb', line 87

def create_document(_native_doc = nil)
  ::Oga::XML::Document.new
end

.create_native_cdata(content, _owner_doc = nil) ⇒ Object 



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# File 'lib/moxml/adapter/oga.rb', line 117

def create_native_cdata(content, _owner_doc = nil)
  ::Oga::XML::Cdata.new(text: content)
end

.create_native_comment(content, _owner_doc = nil) ⇒ Object 



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# File 'lib/moxml/adapter/oga.rb', line 121

def create_native_comment(content, _owner_doc = nil)
  ::Oga::XML::Comment.new(text: content)
end

.create_native_declaration(version, encoding, standalone) ⇒ Object 



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# File 'lib/moxml/adapter/oga.rb', line 136

def create_native_declaration(version, encoding, standalone)
  attrs = {
    version: version,
    encoding: encoding,
    standalone: standalone,
  }.compact
  ::Moxml::Adapter::CustomizedOga::XmlDeclaration.new(attrs)
end

.create_native_doctype(name, external_id, system_id) ⇒ Object 



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# File 'lib/moxml/adapter/oga.rb', line 125

def create_native_doctype(name, external_id, system_id)
  ::Oga::XML::Doctype.new(
    name: name, public_id: external_id, system_id: system_id,
    type: external_id ? "PUBLIC" : "SYSTEM"
  )
end

.create_native_element(name, _owner_doc = nil) ⇒ Object 



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# File 'lib/moxml/adapter/oga.rb', line 91

def create_native_element(name, _owner_doc = nil)
  ::Oga::XML::Element.new(name: name)
end

.create_native_entity_reference(name, _owner_doc = nil) ⇒ Object 



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# File 'lib/moxml/adapter/oga.rb', line 106

def create_native_entity_reference(name, _owner_doc = nil)
  text = ::Oga::XML::Text.new
  text.text = "#{Entity::MARKER}#{name};"
  attachments.set(text, :entity_name, name)
  text
end

.create_native_namespace(element, prefix, uri) ⇒ Object 



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# File 'lib/moxml/adapter/oga.rb', line 161

def create_native_namespace(element, prefix, uri)
  ns = element.available_namespaces[prefix]
  return ns unless ns.nil?

  # Oga creates an attribute and registers a namespace
  set_attribute(element,
                [::Oga::XML::Element::XMLNS_PREFIX, prefix].compact.join(":"), uri)
  element.register_namespace(prefix, uri)
  ::Oga::XML::Namespace.new(name: prefix, uri: uri)
end

.create_native_processing_instruction(target, content) ⇒ Object 



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# File 'lib/moxml/adapter/oga.rb', line 132

def create_native_processing_instruction(target, content)
  ::Oga::XML::ProcessingInstruction.new(name: target, text: content)
end

.create_native_text(content, _owner_doc = nil) ⇒ Object 



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# File 'lib/moxml/adapter/oga.rb', line 95

def create_native_text(content, _owner_doc = nil)
  processed = preprocess_entities(content)
  text = ::Oga::XML::Text.new(text: processed)
  # Oga::XML::Text.new stores the value via ivar, bypassing the
  # RawValueOverride setter. Set the sidecar explicitly so reads
  # return the user-supplied value verbatim rather than running
  # it through the lazy decoder.
  attachments.set(text, :raw_text, processed)
  text
end

.declaration_attribute(declaration, attr_name) ⇒ Object 



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# File 'lib/moxml/adapter/oga.rb', line 145

def declaration_attribute(declaration, attr_name)
  unless ::Moxml::Declaration::ALLOWED_ATTRIBUTES.include?(attr_name.to_s)
    return
  end

  declaration.public_send(attr_name)
end

.doctype_external_id(native) ⇒ Object 



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# File 'lib/moxml/adapter/oga.rb', line 523

def doctype_external_id(native)
  if native.type == "SYSTEM"
    nil
  else
    native.public_id
  end
end

.doctype_name(native) ⇒ Object

Doctype accessor methods Note: Oga stores SYSTEM identifier in public_id for SYSTEM doctypes. See: Oga::XML::Doctype puts SYSTEM dtd in public_id, system_id is nil.



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# File 'lib/moxml/adapter/oga.rb', line 519

def doctype_name(native)
  native.name
end

.doctype_system_id(native) ⇒ Object 



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# File 'lib/moxml/adapter/oga.rb', line 531

def doctype_system_id(native)
  if native.type == "SYSTEM"
    native.public_id
  else
    native.system_id
  end
end

.document(node) ⇒ Object 



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# File 'lib/moxml/adapter/oga.rb', line 312

def document(node)
  current = node
  current = current.parent while parent(current)

  current
end

.duplicate_node(node) ⇒ Object

Oga's Node#dup shallow-copies the ivars, leaving attributes and children shared with the original; the public dup contract needs a full deep copy.



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# File 'lib/moxml/adapter/oga.rb', line 275

def duplicate_node(node)
  case node
  when ::Oga::XML::Element
    copy = ::Oga::XML::Element.new(name: node.name)
    copy.namespace_name = node.namespace_name if node.namespace_name
    node.attributes.each do |attr|
      copy.add_attribute(::Oga::XML::Attribute.new(
                           name: attr.name,
                           namespace_name: attr.namespace_name,
                           value: attr.value,
                         ))
    end
    node.children.each do |child|
      copy.children << duplicate_node(child)
    end
    copy
  when ::Oga::XML::Text
    ::Oga::XML::Text.new(text: node.text)
  when ::Oga::XML::Cdata
    ::Oga::XML::Cdata.new(text: node.text)
  when ::Oga::XML::Comment
    ::Oga::XML::Comment.new(text: node.text)
  when ::Oga::XML::ProcessingInstruction
    ::Oga::XML::ProcessingInstruction.new(name: node.name, text: node.text)
  else
    node.dup
  end
end

.entity_ref?(node) ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/moxml/adapter/oga.rb', line 263

def entity_ref?(node)
  node.is_a?(::Oga::XML::Text) &&
    attachments.get(node, :entity_name)
end

.entity_reference_name(node) ⇒ Object 



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# File 'lib/moxml/adapter/oga.rb', line 113

def entity_reference_name(node)
  attachments.get(node, :entity_name)
end

.get_attribute(element, name) ⇒ Object 



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# File 'lib/moxml/adapter/oga.rb', line 360

def get_attribute(element, name)
  element.attribute(name.to_s)
end

.get_attribute_value(element, name) ⇒ Object 



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# File 'lib/moxml/adapter/oga.rb', line 364

def get_attribute_value(element, name)
  attr = element.attribute(name.to_s)
  attr&.value
end

.has_declaration?(native_doc, _wrapper) ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/moxml/adapter/oga.rb', line 583

def has_declaration?(native_doc, _wrapper)
  decl = attachments.get(native_doc, :xml_declaration)
  if decl.nil? && !attachments.key?(native_doc, :xml_declaration)
    native_doc.is_a?(::Oga::XML::Document) && !native_doc.xml_declaration.nil?
  else
    !decl.nil?
  end
end

.indents_output? ⇒ Boolean

Whether this adapter's oga serialization honors the indent option (the customized generator currently does not; the probe keeps the indentation spec pending-or-live per environment).

Returns:

  • (Boolean) 


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# File 'lib/moxml/adapter/oga.rb', line 568

def indents_output?
  return @indents_output unless @indents_output.nil?

  probe = ::Oga::XML::Document.new
  el = ::Oga::XML::Element.new(name: "r")
  el.children << ::Oga::XML::Text.new(text: "t")
  probe.children << el
  @indents_output = serialize(probe, indent: 2).include?("
  ")
end

.inner_text(node) ⇒ Object 



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# File 'lib/moxml/adapter/oga.rb', line 458

def inner_text(node)
  if node.is_a?(::Oga::XML::Element)
    node.inner_text
  else
    node.text
  end
end

.namespace(element) ⇒ Object 



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# File 'lib/moxml/adapter/oga.rb', line 192

def namespace(element)
  case element
  when ::Oga::XML::Element, ::Oga::XML::Attribute
    element.namespace
  end
rescue NoMethodError
  # Oga attributes fail with NoMethodError:
  # undefined method `available_namespaces' for nil:NilClass
  nil
end

.namespace_definitions(node) ⇒ Object 



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# File 'lib/moxml/adapter/oga.rb', line 510

def namespace_definitions(node)
  return [] unless node.is_a?(::Oga::XML::Element)

  node.namespaces.values
end

.namespace_prefix(namespace) ⇒ Object 



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# File 'lib/moxml/adapter/oga.rb', line 499

def namespace_prefix(namespace)
  # nil for the default namespace
  return if namespace.name == ::Oga::XML::Element::XMLNS_PREFIX

  namespace.name
end

.namespace_uri(namespace) ⇒ Object 



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# File 'lib/moxml/adapter/oga.rb', line 506

def namespace_uri(namespace)
  namespace.uri
end

.next_sibling(node) ⇒ Object 



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# File 'lib/moxml/adapter/oga.rb', line 304

def next_sibling(node)
  node.next
end

.node_name(node) ⇒ Object 



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# File 'lib/moxml/adapter/oga.rb', line 227

def node_name(node)
  node.name
end

.node_type(node) ⇒ Object 



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# File 'lib/moxml/adapter/oga.rb', line 207

def node_type(node)
  case node
  when ::Oga::XML::Element then :element
  when ::Oga::XML::Text
    if attachments.key?(node, :entity_name)
      :entity_reference
    else
      :text
    end
  when ::Oga::XML::Cdata then :cdata
  when ::Oga::XML::Comment then :comment
  when ::Oga::XML::Attribute then :attribute
  when ::Oga::XML::Namespace then :namespace
  when ::Oga::XML::ProcessingInstruction then :processing_instruction
  when ::Oga::XML::Document then :document
  when ::Oga::XML::Doctype then :doctype
  else :unknown
  end
end

.parent(node) ⇒ Object 



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# File 'lib/moxml/adapter/oga.rb', line 268

def parent(node)
  node.parent if node.is_a?(::Oga::XML::Node)
end

.parse(xml, options = {}, _context = nil) ⇒ Object 



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# File 'lib/moxml/adapter/oga.rb', line 31

def parse(xml, options = {}, _context = nil)
  processed_xml = preprocess_entities(xml)

  native_doc = begin
    ::Oga.parse_xml(processed_xml, strict: options[:strict])
  rescue LL::ParserError => e
    raise Moxml::ParseError.new(
      e.message,
      source: xml.is_a?(String) ? xml[0..100] : nil,
    )
  end

  # Oga parses multiple root elements leniently; the moxml
  # contract requires a single root. to_a because the vendored
  # fork's NodeSet#count ignores its block.
  roots = native_doc.children.to_a.count do |child|
    child.instance_of?(::Oga::XML::Element)
  end
  if roots > 1
    raise Moxml::ParseError.new(
      "multiple root elements",
      source: xml.is_a?(String) ? xml[0..100] : nil,
    )
  end

  ctx = _context || Context.new(:oga)
  doc = Wrappers::Document.new(native_doc, ctx)
  Entity::Restorer.new(doc).run if ctx.config.restore_entities
  doc
end

.parse_fragment(xml, _context = nil) ⇒ Object 



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# File 'lib/moxml/adapter/oga.rb', line 319

def parse_fragment(xml, _context = nil)
  doc = parse("<m>#{xml}</m>").native
  children(root(doc))
end

.previous_sibling(node) ⇒ Object 



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# File 'lib/moxml/adapter/oga.rb', line 308

def previous_sibling(node)
  node.previous
end

.processing_instruction_content(node) ⇒ Object 



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# File 'lib/moxml/adapter/oga.rb', line 491

def processing_instruction_content(node)
  node.text
end

.processing_instruction_target(node) ⇒ Object 



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# File 'lib/moxml/adapter/oga.rb', line 203

def processing_instruction_target(node)
  node.name
end

.remove(node) ⇒ Object 



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# File 'lib/moxml/adapter/oga.rb', line 434

def remove(node)
  # Special handling for declarations on Oga documents
  if node.is_a?(::Oga::XML::XmlDeclaration) &&
      node.parent.is_a?(::Oga::XML::Document)
    # Clear declaration state in attachment map
    attachments.set(node.parent, :xml_declaration, nil)
  end

  node.remove
end

.remove_attribute(element, name) ⇒ Object 



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# File 'lib/moxml/adapter/oga.rb', line 369

def remove_attribute(element, name)
  attr = element.attribute(name.to_s)
  element.attributes.delete(attr) if attr
end

.remove_attribute_native(attr) ⇒ Object 



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# File 'lib/moxml/adapter/oga.rb', line 374

def remove_attribute_native(attr)
  element = attr.element
  element&.attributes&.delete(attr)
  attr
end

.remove_declaration(native_doc) ⇒ Object 



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# File 'lib/moxml/adapter/oga.rb', line 592

def remove_declaration(native_doc)
  attachments.set(native_doc, :xml_declaration, nil)
end

.replace(node, new_node) ⇒ Object 



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# File 'lib/moxml/adapter/oga.rb', line 445

def replace(node, new_node)
  node.replace(new_node)
end

.replace_children(node, new_children) ⇒ Object 



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# File 'lib/moxml/adapter/oga.rb', line 449

def replace_children(node, new_children)
  node.children = []
  new_children.each { |child| add_child(node, child) }
end

.root(document) ⇒ Object 



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# File 'lib/moxml/adapter/oga.rb', line 324

def root(document)
  document.children.find { |node| node.is_a?(::Oga::XML::Element) }
end

.sax_parse(xml, handler) ⇒ void

This method returns an undefined value.

SAX parsing implementation for Oga.

Driven off Oga.parse_xml plus a DOM walk because Oga 3.4's native SAX parser decodes on_text content before delivery and exposes no hook to override. The prepended EntityDecoderOverride ensures node.text invoked during the walk produces the correct single-pass decode, so no separate entity pass is needed here. Trade-off: peak memory scales with document size (Oga 3.4 is the final release of an unmaintained gem; the trade is accepted).

Parameters:



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# File 'lib/moxml/adapter/oga.rb', line 75

def sax_parse(xml, handler)
  xml_string = xml.is_a?(IO) || xml.is_a?(StringIO) ? xml.read : xml.to_s
  native_doc = ::Oga.parse_xml(xml_string)

  bridge = OgaSAXBridge.new(handler)
  bridge.on_start_document
  native_doc.children.each { |child| bridge.emit(child) }
  bridge.on_end_document
rescue StandardError => e
  handler.on_error(Moxml::ParseError.new(e.message))
end

.serialize(node, options = {}) ⇒ Object 



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# File 'lib/moxml/adapter/oga.rb', line 579

def serialize(node, options = {})
  serialize_without_entity_processing(node, options)
end

.set_attribute(element, name, value) ⇒ Object 



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# File 'lib/moxml/adapter/oga.rb', line 341

def set_attribute(element, name, value)
  namespace_name = nil
  if name.to_s.include?(":")
    namespace_name, name = name.to_s.split(":",
                                           2)
  end

  processed = preprocess_entities(value.to_s)
  attr = ::Oga::XML::Attribute.new(
    name: name.to_s,
    namespace_name: namespace_name,
    value: processed,
  )
  # See create_native_text: Attribute.new bypasses the override
  # setter, so populate the sidecar here.
  attachments.set(attr, :raw_value, processed)
  element.add_attribute(attr)
end

.set_cdata_content(node, content) ⇒ Object 



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# File 'lib/moxml/adapter/oga.rb', line 479

def set_cdata_content(node, content)
  node.text = content
end

.set_comment_content(node, content) ⇒ Object 



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# File 'lib/moxml/adapter/oga.rb', line 487

def set_comment_content(node, content)
  node.text = content
end

.set_declaration_attribute(declaration, attr_name, value) ⇒ Object 



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# File 'lib/moxml/adapter/oga.rb', line 153

def set_declaration_attribute(declaration, attr_name, value)
  unless ::Moxml::Declaration::ALLOWED_ATTRIBUTES.include?(attr_name.to_s)
    return
  end

  declaration.public_send("#{attr_name}=", value)
end

.set_namespace(element, ns_or_string) ⇒ Object 



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# File 'lib/moxml/adapter/oga.rb', line 172

def set_namespace(element, ns_or_string)
  if ns_or_string.nil?
    element.namespace_name = nil
    # Drop any name prefix so the element is truly unqualified
    if element.respond_to?(:name=) && element.name.to_s.include?(":")
      element.name = element.name.split(":", 2)[-1]
    end
    set_attribute(element, "xmlns", "")
    return element
  end

  # Local part only before binding — qname create + namespace=
  # would otherwise serialize p:p:c (issue #208).
  if element.respond_to?(:name=) && element.name.to_s.include?(":")
    element.name = element.name.split(":", 2)[-1]
  end
  element.namespace_name = ns_or_string.to_s
  element
end

.set_node_name(node, name) ⇒ Object 



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# File 'lib/moxml/adapter/oga.rb', line 231

def set_node_name(node, name)
  node.name = name
end

.set_processing_instruction_content(node, content) ⇒ Object 



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# File 'lib/moxml/adapter/oga.rb', line 495

def set_processing_instruction_content(node, content)
  node.text = content
end

.set_root(doc, element) ⇒ Object 



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# File 'lib/moxml/adapter/oga.rb', line 23

def set_root(doc, element)
  # Clear existing root element if any - Oga's NodeSet needs special handling
  # We need to manually remove elements since NodeSet doesn't support clear or delete_if
  elements_to_remove = doc.children.grep(::Oga::XML::Element)
  elements_to_remove.each { |elem| doc.children.delete(elem) }
  doc.children << element
end

.set_text_content(node, content) ⇒ Object 



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# File 'lib/moxml/adapter/oga.rb', line 466

def set_text_content(node, content)
  processed = preprocess_entities(content)
  if node.is_a?(::Oga::XML::Element)
    node.inner_text = processed
  else
    node.text = processed
  end
end

.text_content(node) ⇒ Object 



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# File 'lib/moxml/adapter/oga.rb', line 454

def text_content(node)
  node.text
end

.xpath(node, expression, namespaces = nil) ⇒ Object 



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# File 'lib/moxml/adapter/oga.rb', line 539

def xpath(node, expression, namespaces = nil)
  result = node.xpath(expression, {},
                      namespaces: namespaces&.transform_keys(&:to_s))
  # Adapter contract: Array<native> | scalar
  result.is_a?(Enumerable) ? result.to_a : result
rescue ::LL::ParserError => e
  raise Moxml::XPathError.new(
    e.message,
    expression: expression,
    adapter: "Oga",
    node: node,
  )
end