Class: Moxml::Adapter::Ox

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

Direct Known Subclasses

HeadedOx

Constant Summary

Constants inherited from Base

Base::ENTITY_MARKER, Base::ENTITY_MARKER_RE, Base::ENTITY_NAME_PATTERN, Base::ENTITY_NAME_RE, Base::SERIALIZED_ENTITY_MARKER_RE, Base::STANDARD_ENTITIES

Class Method Summary collapse

Methods inherited from Base

actual_native, create_cdata, create_comment, create_declaration, create_doctype, create_element, create_entity_reference, create_namespace, create_processing_instruction, create_text, in_scope_namespaces, prepare_for_new_document, preprocess_entities, restore_entities, sax_supported?

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) ⇒ Object 



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# File 'lib/moxml/adapter/ox.rb', line 368

def add_child(element, child)
  # Special handling for declarations on Ox documents
  if element.is_a?(::Ox::Document) && child.is_a?(::Ox::Instruct) && child.target == "xml"
    # Transfer declaration attributes to document
    element.attributes ||= {}
    if child.attributes["version"]
      element.attributes[:version] =
        child.attributes["version"]
    end
    if child.attributes["encoding"]
      element.attributes[:encoding] =
        child.attributes["encoding"]
    end
    if child.attributes["standalone"]
      element.attributes[:standalone] =
        child.attributes["standalone"]
    end
  end

  child.parent = element if child.is_a?(::Ox::Node)
  element.nodes ||= []
  element.nodes << child

  # Mark document if EntityReference is added (avoids tree scan in serialize)
  if child.is_a?(::Moxml::Adapter::CustomizedOx::EntityReference)
    root = element
    while root.is_a?(::Ox::Node) && root.parent
      root = root.parent
    end
    attachments.set(root, :has_entity_refs, true) if root
  end
end

.add_next_sibling(node, sibling) ⇒ Object 



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

def add_next_sibling(node, sibling)
  return unless (parent = parent(node))

  if sibling.is_a?(::Ox::Node)
    sibling.parent&.nodes&.delete(sibling)
    sibling.parent = parent
  end
  idx = parent.nodes.index(node)
  parent.nodes.insert(idx + 1, sibling) if idx
end

.add_previous_sibling(node, sibling) ⇒ Object 



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# File 'lib/moxml/adapter/ox.rb', line 401

def add_previous_sibling(node, sibling)
  return unless (parent = parent(node))

  if sibling.is_a?(::Ox::Node)
    sibling.parent&.nodes&.delete(sibling)
    sibling.parent = parent
  end
  idx = parent.nodes.index(node)
  parent.nodes.insert(idx, sibling) if idx
end

.ancestors(node) ⇒ Object 



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

def ancestors(node)
  return [] unless (parent = parent(node))

  [parent] + ancestors(parent)
end

.assign_parents(node, parent = nil) ⇒ Object 



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# File 'lib/moxml/adapter/ox.rb', line 464

def assign_parents(node, parent = nil)
  node.parent = parent if node.respond_to?(:parent=) && parent
  return unless node.respond_to?(:nodes)

  node.nodes&.each do |child|
    assign_parents(child, node)
  end
end

.at_xpath(node, expression, namespaces = {}) ⇒ Object 



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# File 'lib/moxml/adapter/ox.rb', line 620

def at_xpath(node, expression, namespaces = {})
  xpath(node, expression, namespaces)&.first
end

.attachments ⇒ Object 



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# File 'lib/moxml/adapter/ox.rb', line 14

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

.attribute_element(attribute) ⇒ Object 



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# File 'lib/moxml/adapter/ox.rb', line 306

def attribute_element(attribute)
  attribute.parent
end

.attributes(element) ⇒ Object 



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# File 'lib/moxml/adapter/ox.rb', line 293

def attributes(element)
  return [] unless element.is_a?(::Ox::Element) && element.attributes

  element.attributes.filter_map do |name, value|
    next if name.to_s.start_with?("xmlns")

    # Ensure value is passed correctly - Ox stores with symbol keys
    ::Moxml::Adapter::CustomizedOx::Attribute.new(
      name.to_s, value, element
    )
  end
end

.cdata_content(node) ⇒ Object 



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# File 'lib/moxml/adapter/ox.rb', line 514

def cdata_content(node)
  node.value.to_s
end

.children(node) ⇒ Object 



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# File 'lib/moxml/adapter/ox.rb', line 251

def children(node)
  return [] unless node.is_a?(::Ox::Element) || node.is_a?(::Ox::Document)

  result = node.nodes || []
  # Ox doesn't set parent references during parsing.
  # Set them here so parent/sibling navigation works.
  result.each do |child|
    child.parent = node if child.respond_to?(:parent=)
  end
  result
end

.comment_content(node) ⇒ Object 



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# File 'lib/moxml/adapter/ox.rb', line 522

def comment_content(node)
  node.value.to_s
end

.create_document(native_doc = nil) ⇒ Object 



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# File 'lib/moxml/adapter/ox.rb', line 71

def create_document(native_doc = nil)
  attrs = native_doc&.attributes || {}
  ::Ox::Document.new(**attrs)
end

.create_native_cdata(content, _owner_doc = nil) ⇒ Object 



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# File 'lib/moxml/adapter/ox.rb', line 93

def create_native_cdata(content, _owner_doc = nil)
  ::Ox::CData.new(content)
end

.create_native_comment(content, _owner_doc = nil) ⇒ Object 



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# File 'lib/moxml/adapter/ox.rb', line 97

def create_native_comment(content, _owner_doc = nil)
  ::Ox::Comment.new(content)
end

.create_native_declaration(version, encoding, standalone) ⇒ Object 



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

def create_native_declaration(version, encoding, standalone)
  inst = ::Ox::Instruct.new("xml")
  set_attribute(inst, "version", version)
  set_attribute(inst, "encoding", encoding)
  set_attribute(inst, "standalone", standalone)
  inst
end

.create_native_doctype(name, external_id, system_id) ⇒ Object 



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# File 'lib/moxml/adapter/ox.rb', line 101

def create_native_doctype(name, external_id, system_id)
  ::Ox::DocType.new(
    "#{name} PUBLIC \"#{external_id}\" \"#{system_id}\"",
  )
end

.create_native_element(name, _owner_doc = nil) ⇒ Object 



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# File 'lib/moxml/adapter/ox.rb', line 76

def create_native_element(name, _owner_doc = nil)
  element = ::Ox::Element.new(name)
  element
end

.create_native_entity_reference(name) ⇒ Object 



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# File 'lib/moxml/adapter/ox.rb', line 85

def create_native_entity_reference(name)
  ::Moxml::Adapter::CustomizedOx::EntityReference.new(name)
end

.create_native_namespace(element, prefix, uri) ⇒ Object 



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# File 'lib/moxml/adapter/ox.rb', line 129

def create_native_namespace(element, prefix, uri)
  ns = ::Moxml::Adapter::CustomizedOx::Namespace.new(prefix, uri,
                                                     element)
  set_attribute(element, ns.expanded_prefix, uri)
  ns
end

.create_native_processing_instruction(target, content) ⇒ Object 



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# File 'lib/moxml/adapter/ox.rb', line 107

def create_native_processing_instruction(target, content)
  inst = ::Ox::Instruct.new(target)
  set_processing_instruction_content(inst, content)
  inst
end

.create_native_text(content, _owner_doc = nil) ⇒ Object 



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# File 'lib/moxml/adapter/ox.rb', line 81

def create_native_text(content, _owner_doc = nil)
  content
end

.declaration_attribute(declaration, attr_name) ⇒ Object 



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

def declaration_attribute(declaration, attr_name)
  get_attribute_value(declaration, attr_name)
end

.doctype_external_id(native) ⇒ Object 



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# File 'lib/moxml/adapter/ox.rb', line 570

def doctype_external_id(native)
  value = native.value.to_s
  # Match PUBLIC "external_id"
  match = value.match(/PUBLIC\s+"([^"]*)"/)
  match ? match[1] : nil
end

.doctype_name(native) ⇒ Object

Doctype accessor methods Ox stores DOCTYPE as a string, so we parse it



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# File 'lib/moxml/adapter/ox.rb', line 563

def doctype_name(native)
  # Parse: "name PUBLIC \"external_id\" \"system_id\"" or "name SYSTEM \"system_id\""
  value = native.value.to_s.strip
  # Extract the first word (the name)
  value.split(/\s+/).first
end

.doctype_system_id(native) ⇒ Object 



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# File 'lib/moxml/adapter/ox.rb', line 577

def doctype_system_id(native)
  value = native.value.to_s
  # Match the last quoted string (system_id)
  # For PUBLIC: "name PUBLIC \"external_id\" \"system_id\""
  # For SYSTEM: "name SYSTEM \"system_id\""
  matches = value.scan(/"([^"]*)"/)
  matches.last&.first
end

.document(node) ⇒ Object 



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# File 'lib/moxml/adapter/ox.rb', line 283

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

.duplicate_node(node) ⇒ Object 



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# File 'lib/moxml/adapter/ox.rb', line 216

def duplicate_node(node)
  Marshal.load(Marshal.dump(node))
end

.entity_reference_name(node) ⇒ Object 



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# File 'lib/moxml/adapter/ox.rb', line 89

def entity_reference_name(node)
  node.name if node.is_a?(::Moxml::Adapter::CustomizedOx::EntityReference)
end

.get_attribute(element, name) ⇒ Object 



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# File 'lib/moxml/adapter/ox.rb', line 343

def get_attribute(element, name)
  return unless element.is_a?(::Ox::HasAttrs) && element.attributes
  unless element.attributes.key?(name.to_s) || element.attributes.key?(name.to_s.to_sym)
    return
  end

  # Ox stores attributes with symbol keys, so try both string and symbol
  value = element.attributes[name.to_s] || element.attributes[name.to_s.to_sym]

  ::Moxml::Adapter::CustomizedOx::Attribute.new(
    name.to_s, value, element
  )
end

.get_attribute_value(element, name) ⇒ Object 



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# File 'lib/moxml/adapter/ox.rb', line 357

def get_attribute_value(element, name)
  element[name]
end

.has_declaration?(native_doc, _wrapper) ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/moxml/adapter/ox.rb', line 665

def has_declaration?(native_doc, _wrapper)
  # Ox stores declaration in document attributes
  native_doc[:version] || native_doc[:encoding] || native_doc[:standalone]
end

.inner_text(node) ⇒ Object 



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

def inner_text(node)
  return "" unless node.is_a?(::Ox::Element) || node.is_a?(::Ox::Document)

  node.nodes.grep(String).join
end

.namespace(element) ⇒ Object 



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# File 'lib/moxml/adapter/ox.rb', line 150

def namespace(element)
  prefix =
    if element.is_a?(::Moxml::Adapter::CustomizedOx::Attribute)
      element.prefix
    elsif element.name.include?(":")
      element.name.split(":").first
    end
  attr_name = ["xmlns", prefix].compact.join(":")

  ([element] + ancestors(element)).each do |node|
    next unless node.is_a?(::Ox::Element) && node.attributes

    if node[attr_name]
      return ::Moxml::Adapter::CustomizedOx::Namespace.new(
        prefix, node[attr_name], element
      )
    end
  end

  nil
end

.namespace_definitions(node) ⇒ Object 



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# File 'lib/moxml/adapter/ox.rb', line 546

def namespace_definitions(node)
  return [] unless node.is_a?(::Ox::Element) && node.attributes

  namespaces = {}
  node.attributes.each do |name, value|
    name_s = name.to_s
    next unless name_s == "xmlns" || name_s.start_with?("xmlns:")

    namespaces[name] = ::Moxml::Adapter::CustomizedOx::Namespace.new(
      name, value, node
    )
  end
  namespaces.values
end

.namespace_prefix(namespace) ⇒ Object 



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# File 'lib/moxml/adapter/ox.rb', line 538

def namespace_prefix(namespace)
  namespace.prefix
end

.namespace_uri(namespace) ⇒ Object 



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# File 'lib/moxml/adapter/ox.rb', line 542

def namespace_uri(namespace)
  namespace.uri
end

.needs_custom_serialize?(node) ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/moxml/adapter/ox.rb', line 634

def needs_custom_serialize?(node)
  # Fast path: single CData with ]]>
  return true if node.is_a?(::Ox::CData) && node.value&.include?("]]>")

  # Only documents/elements can contain entity refs or CDATA issues
  return false unless node.is_a?(::Ox::Document) || node.is_a?(::Ox::Element)

  # Check cached flags on documents (most common case)
  if node.is_a?(::Ox::Document)
    return true if attachments.get(node, :has_entity_refs)
    return true if attachments.get(node, :has_cdata_end_markers)
    return false if attachments.key?(node, :has_entity_refs) &&
                    attachments.key?(node, :has_cdata_end_markers)
  end

  # Only scan tree on first call — short-circuit on first hit
  has_er = tree_has_entity_references?(node)
  if has_er
    attachments.set(node, :has_entity_refs, true) if node.is_a?(::Ox::Document)
    return true
  end

  has_cdata = tree_has_cdata_end_markers?(node)
  if node.is_a?(::Ox::Document)
    attachments.set(node, :has_entity_refs, false)
    attachments.set(node, :has_cdata_end_markers, has_cdata)
  end

  has_cdata
end

.next_sibling(node) ⇒ Object 



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# File 'lib/moxml/adapter/ox.rb', line 267

def next_sibling(node)
  return unless (parent = node.parent)

  siblings = parent.nodes
  idx = siblings.index(unpatch_node(node))
  idx ? patch_node(siblings[idx + 1], parent) : nil
end

.node_name(node) ⇒ Object 



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# File 'lib/moxml/adapter/ox.rb', line 198

def node_name(node)
  name = begin
    node.value
  rescue StandardError
    node.name
  end

  # Strip namespace prefix if present
  name.to_s.split(":", 2).last
end

.node_type(node) ⇒ Object 



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# File 'lib/moxml/adapter/ox.rb', line 182

def node_type(node)
  case node
  when ::Ox::Document then :document
  when ::Moxml::Adapter::CustomizedOx::Text, String then :text
  when ::Ox::CData then :cdata
  when ::Ox::Comment then :comment
  when ::Ox::Instruct then :processing_instruction
  when ::Ox::Element then :element
  when ::Ox::DocType then :doctype
  when ::Moxml::Adapter::CustomizedOx::EntityReference then :entity_reference
  when ::Moxml::Adapter::CustomizedOx::Namespace then :banespace
  when ::Moxml::Adapter::CustomizedOx::Attribute then :attribute
  else :unknown
  end
end

.parent(node) ⇒ Object 



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

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

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



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# File 'lib/moxml/adapter/ox.rb', line 22

def parse(xml, options = {}, _context = nil)
  processed_xml = preprocess_entities(xml)
  native_doc = begin
    result = ::Ox.parse(processed_xml)

    # result can be either Document or Element
    if result.is_a?(::Ox::Document)
      assign_parents(result)
      validate_single_root(result) if options[:strict]
      result
    else
      doc = ::Ox::Document.new
      doc << result
      assign_parents(doc)
      doc
    end
  rescue ::Ox::ParseError => e
    raise Moxml::ParseError.new(
      e.message,
      source: xml.is_a?(String) ? xml[0..100] : nil,
    )
  end

  ctx = _context || Context.new(:ox)
  Document.new(native_doc, ctx)
end

.patch_node(node, parent = nil) ⇒ Object 



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# File 'lib/moxml/adapter/ox.rb', line 220

def patch_node(node, parent = nil)
  new_node =
    case node
    # it can be either attribute or namespace
    when Array then ::Moxml::Adapter::CustomizedOx::Attribute.new(
      node.first, node.last
    )
    when Hash then ::Moxml::Adapter::CustomizedOx::Attribute.new(
      node.keys.first, node.values.first
    )
    when String then ::Moxml::Adapter::CustomizedOx::Text.new(node)
    else node
    end

  new_node.parent = parent if new_node.is_a?(::Ox::Node)

  new_node
end

.previous_sibling(node) ⇒ Object 



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

def previous_sibling(node)
  return unless (parent = parent(node))

  siblings = parent.nodes
  idx = siblings.index(unpatch_node(node))
  idx&.positive? ? patch_node(siblings[idx - 1], parent) : nil
end

.processing_instruction_content(node) ⇒ Object 



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# File 'lib/moxml/adapter/ox.rb', line 530

def processing_instruction_content(node)
  node.content.to_s
end

.processing_instruction_target(node) ⇒ Object 



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# File 'lib/moxml/adapter/ox.rb', line 178

def processing_instruction_target(node)
  node.target
end

.remove(node) ⇒ Object 



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

def remove(node)
  return node.clear if node.is_a?(String)

  return unless parent(node)

  # Special handling for declarations on Ox documents
  if parent(node).is_a?(::Ox::Document) && node.is_a?(::Ox::Instruct) && node.target == "xml"
    # Clear declaration attributes from document
    doc = parent(node)
    doc.attributes&.delete(:version)
    doc.attributes&.delete(:encoding)
    doc.attributes&.delete(:standalone)
  end

  parent(node).nodes.delete(unpatch_node(node))
end

.remove_attribute(element, name) ⇒ Object 



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# File 'lib/moxml/adapter/ox.rb', line 361

def remove_attribute(element, name)
  return unless element.is_a?(::Ox::HasAttrs) && element.attributes

  element.attributes.delete(name.to_s)
  element.attributes.delete(name.to_s.to_sym)
end

.replace(node, new_node) ⇒ Object 



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# File 'lib/moxml/adapter/ox.rb', line 440

def replace(node, new_node)
  if node.is_a?(String) && new_node.is_a?(String)
    return node.replace(new_node)
  end
  # There are other cases:
  # when node is a String and new_node isn't
  # when node isn't a String, and new_node is a String

  return unless (parent = parent(node))

  new_node.parent = parent if new_node.is_a?(::Ox::Node)
  idx = parent.nodes.index(node)
  parent.nodes[idx] = new_node if idx
end

.replace_children(node, new_children) ⇒ Object 



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# File 'lib/moxml/adapter/ox.rb', line 455

def replace_children(node, new_children)
  node.remove_children_by_path("*")
  new_children.each do |child|
    child.parent = node if child.is_a?(::Ox::Node)
    node << child
  end
  node
end

.root(document) ⇒ Object 



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# File 'lib/moxml/adapter/ox.rb', line 289

def root(document)
  document.nodes&.find { |node| node.is_a?(::Ox::Element) }
end

.sax_parse(xml, handler) ⇒ void

This method returns an undefined value.

SAX parsing implementation for Ox

Parameters:



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# File 'lib/moxml/adapter/ox.rb', line 54

def sax_parse(xml, handler)
  # Create bridge that translates Ox SAX to Moxml SAX
  bridge = OxSAXBridge.new(handler)

  # Parse using Ox's SAX parser
  xml_string = xml.is_a?(IO) || xml.is_a?(StringIO) ? xml.read : xml.to_s

  begin
    ::Ox.sax_parse(bridge, StringIO.new(xml_string))
    # Ox doesn't automatically call end_document, so we do it manually
    bridge.end_document
  rescue ::Ox::ParseError => e
    error = Moxml::ParseError.new(e.message)
    handler.on_error(error)
  end
end

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



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# File 'lib/moxml/adapter/ox.rb', line 624

def serialize(node, options = {})
  needs_custom = needs_custom_serialize?(node)

  unless needs_custom
    return serialize_standard(node, options)
  end

  serialize_custom(node, options)
end

.set_attribute(element, name, value) ⇒ Object 



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# File 'lib/moxml/adapter/ox.rb', line 310

def set_attribute(element, name, value)
  element.attributes ||= {}
  if value.nil?
    # Ox converts all values to strings
    remove_attribute(element, name)
  else
    element.attributes[name.to_s] = value
  end

  ::Moxml::Adapter::CustomizedOx::Attribute.new(
    name.to_s, value&.to_s, element
  )
end

.set_attribute_name(attribute, name) ⇒ Object 



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

def set_attribute_name(attribute, name)
  old_name = attribute.name
  attribute.name = name.to_s
  # Ox doesn't change the keys of the attributes hash
  element = attribute.parent
  element.attributes.delete(old_name)
  element.attributes[name] = attribute.value
end

.set_attribute_value(attribute, new_value) ⇒ Object 



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# File 'lib/moxml/adapter/ox.rb', line 333

def set_attribute_value(attribute, new_value)
  if new_value.nil?
    # Ox converts all values to strings
    remove_attribute(attribute.parent, attribute.name)
  else
    attribute.value = new_value
    attribute.parent.attributes[attribute.name] = new_value
  end
end

.set_cdata_content(node, content) ⇒ Object 



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# File 'lib/moxml/adapter/ox.rb', line 518

def set_cdata_content(node, content)
  node.value = content.to_s
end

.set_comment_content(node, content) ⇒ Object 



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# File 'lib/moxml/adapter/ox.rb', line 526

def set_comment_content(node, content)
  node.value = content.to_s
end

.set_declaration_attribute(declaration, attr_name, value) ⇒ Object 



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

def set_declaration_attribute(declaration, attr_name, value)
  set_attribute(declaration, attr_name, value)
end

.set_namespace(element, ns) ⇒ Object 



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

def set_namespace(element, ns)
  return unless element.is_a?(::Ox::Element) || element.is_a?(::Ox::Node)

  prefix = ns.prefix
  # attributes don't have attributes but can have a namespace prefix
  if element.is_a?(::Ox::Element)
    set_attribute(element, ns.expanded_prefix,
                  ns.uri)
  end
  element.name = [prefix,
                  element.name.delete_prefix("xmlns:")].compact.join(":")
  namespace(element)
end

.set_node_name(node, name) ⇒ Object 



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# File 'lib/moxml/adapter/ox.rb', line 209

def set_node_name(node, name)
  case node
  when ::Ox::Element then node.name = name
  when ::Ox::Instruct then node.value = name
  end
end

.set_processing_instruction_content(node, content) ⇒ Object 



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# File 'lib/moxml/adapter/ox.rb', line 534

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

.set_root(doc, element) ⇒ Object 



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# File 'lib/moxml/adapter/ox.rb', line 18

def set_root(doc, element)
  replace_children(doc, [element])
end

.set_text_content(node, content) ⇒ Object 



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# File 'lib/moxml/adapter/ox.rb', line 505

def set_text_content(node, content)
  case node
  when String then node.replace(content.to_s)
  when ::Ox::Element then node.replace_text(content.to_s)
  else
    node.value = content.to_s
  end
end

.text_content(node) ⇒ Object 



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

def text_content(node)
  return "" if node.nil?

  case node
  when String then node.to_s
  when ::Moxml::Adapter::CustomizedOx::Text then node.value
  when ::Moxml::Adapter::CustomizedOx::EntityReference then ""
  else
    return "" unless node.is_a?(::Ox::Element) || node.is_a?(::Ox::Document)

    node.nodes.map do |n|
      text_content(n)
    end.join
  end
end

.unpatch_node(node) ⇒ Object 



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# File 'lib/moxml/adapter/ox.rb', line 239

def unpatch_node(node)
  case node
  # it can be either attribute or namespace
  when ::Moxml::Adapter::CustomizedOx::Attribute then [node.name,
                                                       node.value]
  # when ::Moxml::Adapter::CustomizedOx::Attribute then { node.name => node.value }
  when ::Moxml::Adapter::CustomizedOx::Text then node.value
  when ::Moxml::Adapter::CustomizedOx::EntityReference then node
  else node
  end
end

.validate_single_root(document) ⇒ Object

Raises:



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# File 'lib/moxml/adapter/ox.rb', line 473

def validate_single_root(document)
  elements = document.nodes&.grep(::Ox::Element) || []
  return unless elements.size > 1

  raise Moxml::ParseError.new(
    "Multiple root elements found",
    source: nil,
  )
end

.xpath(node, expression, namespaces = {}) ⇒ Object 



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# File 'lib/moxml/adapter/ox.rb', line 586

def xpath(node, expression, namespaces = {})
  # Translate common XPath patterns to Ox locate() syntax
  locate_expr = translate_xpath_to_locate(expression, namespaces)

  # Ox's locate() works differently on documents vs elements
  # For relative descendant searches on elements, we need special handling
  if expression.start_with?(".//") && node.is_a?(::Ox::Element)
    # Manually search descendants for relative paths from elements
    element_name = locate_expr.sub("?/", "")
    results = []
    traverse(node) do |n|
      next unless n.is_a?(::Ox::Element)

      results << n if n.name == element_name || element_name.empty?
    end
    return results.map do |n|
      patch_node(n, find_parent_in_tree(n, node))
    end
  end

  # Use Ox's locate method for other cases
  results = node.locate(locate_expr)

  # Wrap results and set their parents by finding them in the tree
  results.map { |n| patch_node(n, find_parent_in_tree(n, node)) }
rescue StandardError => e
  raise Moxml::XPathError.new(
    "XPath translation failed: #{e.message}",
    expression: expression,
    adapter: "Ox",
    node: node,
  )
end