Class: LibXML::XML::Node

Inherits:
Object
  • Object
show all
Includes:
Enumerable
Defined in:
ext/libxml/ruby_xml_node.c,
lib/libxml/node.rb,
ext/libxml/ruby_xml_node.c

Overview

Nodes are the primary objects that make up an XML document. The node class represents most node types that are found in an XML document (but not LibXML::XML::Attributes, see LibXML::XML::Attr). It exposes libxml’s full API for creating, querying moving and deleting node objects. Many of these methods are documented in the DOM Level 3 specification found at: www.w3.org/TR/DOM-Level-3-Core/.

Constant Summary collapse

SPACE_DEFAULT = 
INT2NUM(0)
SPACE_PRESERVE = 
INT2NUM(1)
SPACE_NOT_INHERIT = 
INT2NUM(-1)

INT2NUM(1)

INT2NUM(0)

INT2NUM(2)

INT2NUM(2)

INT2NUM(1)

INT2NUM(0)

INT2NUM(3)

INT2NUM(2)

INT2NUM(3)

INT2NUM(0)

INT2NUM(1)
ELEMENT_NODE = 
INT2FIX(XML_ELEMENT_NODE)
ATTRIBUTE_NODE = 
INT2FIX(XML_ATTRIBUTE_NODE)
TEXT_NODE = 
INT2FIX(XML_TEXT_NODE)
CDATA_SECTION_NODE = 
INT2FIX(XML_CDATA_SECTION_NODE)
ENTITY_REF_NODE = 
INT2FIX(XML_ENTITY_REF_NODE)
ENTITY_NODE = 
INT2FIX(XML_ENTITY_NODE)
PI_NODE = 
INT2FIX(XML_PI_NODE)
COMMENT_NODE = 
INT2FIX(XML_COMMENT_NODE)
DOCUMENT_NODE = 
INT2FIX(XML_DOCUMENT_NODE)
DOCUMENT_TYPE_NODE = 
INT2FIX(XML_DOCUMENT_TYPE_NODE)
DOCUMENT_FRAG_NODE = 
INT2FIX(XML_DOCUMENT_FRAG_NODE)
NOTATION_NODE = 
INT2FIX(XML_NOTATION_NODE)
HTML_DOCUMENT_NODE = 
INT2FIX(XML_HTML_DOCUMENT_NODE)
DTD_NODE = 
INT2FIX(XML_DTD_NODE)
ELEMENT_DECL = 
INT2FIX(XML_ELEMENT_DECL)
ATTRIBUTE_DECL = 
INT2FIX(XML_ATTRIBUTE_DECL)
ENTITY_DECL = 
INT2FIX(XML_ENTITY_DECL)
NAMESPACE_DECL = 
INT2FIX(XML_NAMESPACE_DECL)
XINCLUDE_START = 
INT2FIX(XML_XINCLUDE_START)
XINCLUDE_END = 
INT2FIX(XML_XINCLUDE_END)
DOCB_DOCUMENT_NODE = 
Qnil

Class Method Summary collapse

Instance Method Summary collapse

Constructor Details

#XML::Node.initialize(name, content = nil, namespace = nil) ⇒ XML::Node

Creates a new element with the specified name, content and namespace. The content and namespace may be nil.



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# File 'ext/libxml/ruby_xml_node.c', line 269

static VALUE rxml_node_initialize(int argc, VALUE *argv, VALUE self)
{
  VALUE name;
  VALUE content;
  VALUE ns;
  xmlNodePtr xnode = NULL;
  xmlNsPtr xns = NULL;

  rb_scan_args(argc, argv, "12", &name, &content, &ns);

  name = rb_obj_as_string(name);

  if (!NIL_P(ns))
    Data_Get_Struct(ns, xmlNs, xns);

  xnode = xmlNewNode(xns, (xmlChar*) StringValuePtr(name));

  if (xnode == NULL)
    rxml_raise(&xmlLastError);

  // Link the ruby wrapper to the underlying libxml node
  RDATA(self)->data = xnode;

  // Ruby is in charge of managing this node's memory
  rxml_node_manage(xnode, self);

  if (!NIL_P(content))
    rxml_node_content_set(self, content);

  return self;
}

Class Method Details

.XML::Node.new_cdata(content = nil) ⇒ XML::Node

Create a new #CDATA node, optionally setting the node’s content.

Returns:



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# File 'ext/libxml/ruby_xml_node.c', line 148

static VALUE rxml_node_new_cdata(int argc, VALUE *argv, VALUE klass)
{
  VALUE content = Qnil;
  xmlNodePtr xnode;

  rb_scan_args(argc, argv, "01", &content);

  if (NIL_P(content))
  {
    xnode = xmlNewCDataBlock(NULL, NULL, 0);
  }
  else
  {
    content = rb_obj_as_string(content);
    xnode = xmlNewCDataBlock(NULL, (xmlChar*) StringValuePtr(content), (int)RSTRING_LEN(content));
  }

  if (xnode == NULL)
    rxml_raise(&xmlLastError);

  return rxml_node_wrap(xnode);
}

.XML::Node.new_comment(content = nil) ⇒ XML::Node

Create a new comment node, optionally setting the node’s content.

Returns:



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# File 'ext/libxml/ruby_xml_node.c', line 179

static VALUE rxml_node_new_comment(int argc, VALUE *argv, VALUE klass)
{
  VALUE content = Qnil;
  xmlNodePtr xnode;

  rb_scan_args(argc, argv, "01", &content);

  if (NIL_P(content))
  {
    xnode = xmlNewComment(NULL);
  }
  else
  {
    content = rb_obj_as_string(content);
    xnode = xmlNewComment((xmlChar*) StringValueCStr(content));
  }

  if (xnode == NULL)
    rxml_raise(&xmlLastError);

  return rxml_node_wrap(xnode);
}

.XML::Node.new_pi(name, content = nil) ⇒ XML::Node

Create a new pi node, optionally setting the node’s content.

Returns:



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# File 'ext/libxml/ruby_xml_node.c', line 210

static VALUE rxml_node_new_pi(int argc, VALUE *argv, VALUE klass)
{
  VALUE name = Qnil;
  VALUE content = Qnil;
  xmlNodePtr xnode;

  rb_scan_args(argc, argv, "11", &name, &content);

  if (NIL_P(name))
  {
    rb_raise(rb_eRuntimeError, "You must provide me with a name for a PI.");
  }
  name = rb_obj_as_string(name);
  if (NIL_P(content))
  {
    xnode = xmlNewPI((xmlChar*) StringValuePtr(name), NULL);
  }
  else
  {
    content = rb_obj_as_string(content);
    xnode = xmlNewPI((xmlChar*) StringValuePtr(name), (xmlChar*) StringValueCStr(content));
  }

  if (xnode == NULL)
    rxml_raise(&xmlLastError);

  return rxml_node_wrap(xnode);
}

.XML::Node.new_text(content) ⇒ XML::Node

Create a new text node.

Returns:



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# File 'ext/libxml/ruby_xml_node.c', line 246

static VALUE rxml_node_new_text(VALUE klass, VALUE content)
{
  xmlNodePtr xnode;
  Check_Type(content, T_STRING);
  content = rb_obj_as_string(content);

  xnode = xmlNewText((xmlChar*) StringValueCStr(content));

  if (xnode == NULL)
    rxml_raise(&xmlLastError);

  return rxml_node_wrap(xnode);
}

Instance Method Details

#<<("Some text") ⇒ Object #<<(node) ⇒ Object

Add the specified text or XML::Node as a new child node to the current node.

If the specified argument is a string, it should be a raw string that contains unescaped XML special characters. Entity references are not supported.

The method will return the current node.



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# File 'ext/libxml/ruby_xml_node.c', line 476

static VALUE rxml_node_content_add(VALUE self, VALUE obj)
{
  xmlNodePtr xnode;
  VALUE str;

  xnode = rxml_get_xnode(self);

  /* XXX This should only be legal for a CDATA type node, I think,
   * resulting in a merge of content, as if a string were passed
   * danj 070827
   */
  if (rb_obj_is_kind_of(obj, cXMLNode))
  { 
    rxml_node_modify_dom(self, obj, xmlAddChild);
  }
  else
  {
    str = rb_obj_as_string(obj);
    if (NIL_P(str) || TYPE(str) != T_STRING)
      rb_raise(rb_eTypeError, "invalid argument: must be string or XML::Node");

    xmlNodeAddContent(xnode, (xmlChar*) StringValuePtr(str));
  }
  return self;
}

#property("name") ⇒ Object #[]("name") ⇒ Object

Obtain the named property.



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# File 'ext/libxml/ruby_xml_node.c', line 1082

static VALUE rxml_node_attribute_get(VALUE self, VALUE name)
{
  VALUE attributes = rxml_node_attributes_get(self);
  return rxml_attributes_attribute_get(attributes, name);
}

#[]=("name") ⇒ Object

Set the named property.



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# File 'ext/libxml/ruby_xml_node.c', line 1094

static VALUE rxml_node_property_set(VALUE self, VALUE name, VALUE value)
{
  VALUE attributes = rxml_node_attributes_get(self);
  return rxml_attributes_attribute_set(attributes, name, value);
}

#attribute? ⇒ Boolean

Specifies if this is an attribute node

Returns:

  • (Boolean) 


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# File 'lib/libxml/node.rb', line 207

def attribute?
  node_type == ATTRIBUTE_NODE
end

#attribute_decl? ⇒ Boolean

Specifies if this is an attribute declaration node

Returns:

  • (Boolean) 


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# File 'lib/libxml/node.rb', line 212

def attribute_decl?
  node_type == ATTRIBUTE_DECL
end

#attributes ⇒ Object

Returns the XML::Attributes for this node.



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# File 'ext/libxml/ruby_xml_node.c', line 1067

static VALUE rxml_node_attributes_get(VALUE self)
{
  xmlNodePtr xnode;

  xnode = rxml_get_xnode(self);
  return rxml_attributes_new(xnode);
}

#attributes? ⇒ Boolean

Determines whether this node has attributes

Returns:

  • (Boolean) 


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# File 'lib/libxml/node.rb', line 9

def attributes?
  attributes.length > 0
end

#base_uri ⇒ Object

Obtain this node’s base URI.



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# File 'ext/libxml/ruby_xml_node.c', line 339

static VALUE rxml_node_base_uri_get(VALUE self)
{
  xmlNodePtr xnode;
  xmlChar* base_uri;
  VALUE result = Qnil;

  xnode = rxml_get_xnode(self);

  if (xnode->doc == NULL)
    return (result);

  base_uri = xmlNodeGetBase(xnode->doc, xnode);
  if (base_uri)
  {
    result = rxml_new_cstr( base_uri, NULL);
    xmlFree(base_uri);
  }

  return (result);
}

#base_uri=(uri) ⇒ Object

Set this node’s base URI.



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# File 'ext/libxml/ruby_xml_node.c', line 368

static VALUE rxml_node_base_uri_set(VALUE self, VALUE uri)
{
  xmlNodePtr xnode;

  Check_Type(uri, T_STRING);
  xnode = rxml_get_xnode(self);
  if (xnode->doc == NULL)
    return (Qnil);

  xmlNodeSetBase(xnode, (xmlChar*) StringValuePtr(uri));
  return (Qtrue);
}

#empty? ⇒ Boolean

Determine whether this node is an empty or whitespace only text-node.

Returns:

  • (Boolean) 


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# File 'ext/libxml/ruby_xml_node.c', line 660

static VALUE rxml_node_empty_q(VALUE self)
{
  xmlNodePtr xnode;
  xnode = rxml_get_xnode(self);
  if (xnode == NULL)
    return (Qnil);

  return ((xmlIsBlankNode(xnode) == 1) ? Qtrue : Qfalse);
}

#cdata? ⇒ Boolean

Specifies if this is an CDATA node

Returns:

  • (Boolean) 


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# File 'lib/libxml/node.rb', line 217

def cdata?
  node_type == CDATA_SECTION_NODE
end

#children ⇒ Object

Returns this node’s children as an array.



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# File 'lib/libxml/node.rb', line 131

def children
  entries
end

#clone ⇒ Object

Create a shallow copy of the node. To create a deep copy call Node#copy(true)



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# File 'lib/libxml/node.rb', line 15

def clone
  copy(false)
end

#comment? ⇒ Boolean

Specifies if this is an comment node

Returns:

  • (Boolean) 


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# File 'lib/libxml/node.rb', line 222

def comment?
  node_type == COMMENT_NODE
end

#content ⇒ Object

Obtain this node’s content as a string.



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# File 'ext/libxml/ruby_xml_node.c', line 387

static VALUE rxml_node_content_get(VALUE self)
{
  xmlNodePtr xnode;
  xmlChar *content;
  VALUE result = Qnil;

  xnode = rxml_get_xnode(self);
  content = xmlNodeGetContent(xnode);
  if (content)
  {
    result = rxml_new_cstr(content, NULL);
    xmlFree(content);
  }

  return result;
}

#content=(content) ⇒ Object

Set this node’s content to the specified string.



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# File 'ext/libxml/ruby_xml_node.c', line 410

static VALUE rxml_node_content_set(VALUE self, VALUE content)
{
  xmlNodePtr xnode;
  xmlChar* encoded_content;

  Check_Type(content, T_STRING);
  xnode = rxml_get_xnode(self);
  encoded_content = xmlEncodeSpecialChars(xnode->doc, (xmlChar*) StringValuePtr(content));
  xmlNodeSetContent(xnode, encoded_content);
  xmlFree(encoded_content);
  return (Qtrue);
}

#context(nslist = nil) ⇒ Object

call-seq:

node.context(namespaces=nil) -> XPath::Context

Returns a new XML::XPathContext for the current node.

Namespaces is an optional array of XML::NS objects



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# File 'lib/libxml/node.rb', line 53

def context(nslist = nil)
  if not self.doc
    raise(TypeError, "A node must belong to a document before a xpath context can be created")
  end

  context = XPath::Context.new(self.doc)
  context.node = self
  context.register_namespaces_from_node(self)
  context.register_namespaces_from_node(self.doc.root)
  context.register_namespaces(nslist) if nslist
  context
end

#copy ⇒ XML::Node

Creates a copy of this node. To create a shallow copy set the deep parameter to false. To create a deep copy set the deep parameter to true.

Returns:



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# File 'ext/libxml/ruby_xml_node.c', line 1284

static VALUE rxml_node_copy(VALUE self, VALUE deep)
{
  xmlNodePtr xnode;
  xmlNodePtr xcopy;
  int recursive = (deep == Qnil || deep == Qfalse) ? 0 : 1;
  xnode = rxml_get_xnode(self);

  xcopy = xmlCopyNode(xnode, recursive);

  if (xcopy)
    return rxml_node_wrap(xcopy);
  else
    return Qnil;
}

#debug ⇒ Object

Print libxml debugging information to stdout. Requires that libxml was compiled with debugging enabled.



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# File 'ext/libxml/ruby_xml_node.c', line 430

static VALUE rxml_node_debug(VALUE self)
{
#ifdef LIBXML_DEBUG_ENABLED

  xmlNodePtr xnode;
  xnode = rxml_get_xnode(self);
  xmlDebugDumpNode(NULL, xnode, 2);
  return Qtrue;
#else

  rb_warn("libxml was compiled without debugging support.");
  return Qfalse;
#endif

}

#doc ⇒ Object

Obtain the XML::Document this node belongs to.



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# File 'ext/libxml/ruby_xml_node.c', line 508

static VALUE rxml_node_doc(VALUE self)
{
  xmlDocPtr xdoc = NULL;
  xmlNodePtr xnode = rxml_get_xnode(self);

  switch (xnode->type)
  {
  case XML_DOCUMENT_NODE:
#ifdef LIBXML_DOCB_ENABLED

  case XML_DOCB_DOCUMENT_NODE:
#endif

  case XML_HTML_DOCUMENT_NODE:
  case XML_NAMESPACE_DECL:
    break;
  case XML_ATTRIBUTE_NODE:
    xdoc = (xmlDocPtr)((xmlAttrPtr) xnode->doc);
    break;
  default:
    xdoc = xnode->doc;
  }

  if (xdoc == NULL)
    return (Qnil);

  return (VALUE)xdoc->_private;
}

#docbook_doc? ⇒ Boolean

Specifies if this is an docbook node

Returns:

  • (Boolean) 


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# File 'lib/libxml/node.rb', line 227

def docbook_doc?
  node_type == DOCB_DOCUMENT_NODE
end

#doctype? ⇒ Boolean

Specifies if this is an doctype node

Returns:

  • (Boolean) 


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# File 'lib/libxml/node.rb', line 232

def doctype?
  node_type == DOCUMENT_TYPE_NODE
end

#document? ⇒ Boolean

Specifies if this is an document node

Returns:

  • (Boolean) 


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# File 'lib/libxml/node.rb', line 237

def document?
  node_type == DOCUMENT_NODE
end

#dtd? ⇒ Boolean

Specifies if this is an DTD node

Returns:

  • (Boolean) 


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# File 'lib/libxml/node.rb', line 242

def dtd?
  node_type == DTD_NODE
end

#dup ⇒ Object

:call-seq:

node.dup -> XML::Node

Create a shallow copy of the node. To create a deep copy call Node#copy(true)



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# File 'lib/libxml/node.rb', line 43

def dup
  copy(false)
end

#each ⇒ XML::Node Also known as: each_child

Iterates over this node’s children, including text nodes, element nodes, etc. If you wish to iterate only over child elements, use XML::Node#each_element.

doc = XML::Document.new('model/books.xml')
doc.root.each {|node| puts node}

Returns:



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# File 'ext/libxml/ruby_xml_node.c', line 634

static VALUE rxml_node_each(VALUE self)
{
  xmlNodePtr xnode;
  xmlNodePtr xcurrent;
  xnode = rxml_get_xnode(self);

  xcurrent = xnode->children;

  while (xcurrent)
  {
    /* The user could remove this node, so first stache
       away the next node. */
    xmlNodePtr xnext = xcurrent->next;

    rb_yield(rxml_node_wrap(xcurrent));
    xcurrent = xnext;
  }
  return Qnil;
}

#each_attr ⇒ Object

——- Traversal —————- Iterates over this node’s attributes.

doc = XML::Document.new('model/books.xml')
doc.root.each_attr {|attr| puts attr}



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# File 'lib/libxml/node.rb', line 103

def each_attr
  attributes.each do |attr|
    yield(attr)
  end
end

#each_element ⇒ Object

Iterates over this node’s child elements (nodes that have a node_type == ELEMENT_NODE).

doc = XML::Document.new('model/books.xml')
doc.root.each_element {|element| puts element}



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# File 'lib/libxml/node.rb', line 114

def each_element
  each do |node|
    yield(node) if node.node_type == ELEMENT_NODE
  end
end

#element? ⇒ Boolean

Specifies if this is an element node

Returns:

  • (Boolean) 


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# File 'lib/libxml/node.rb', line 247

def element?
  node_type == ELEMENT_NODE
end

#element_decl? ⇒ Boolean

Specifies if this is an element declaration node

Returns:

  • (Boolean) 


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# File 'lib/libxml/node.rb', line 257

def element_decl?
  node_type == ELEMENT_DECL
end

#empty? ⇒ Boolean

Determine whether this node is an empty or whitespace only text-node.

Returns:

  • (Boolean) 


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# File 'ext/libxml/ruby_xml_node.c', line 660

static VALUE rxml_node_empty_q(VALUE self)
{
  xmlNodePtr xnode;
  xnode = rxml_get_xnode(self);
  if (xnode == NULL)
    return (Qnil);

  return ((xmlIsBlankNode(xnode) == 1) ? Qtrue : Qfalse);
}

#entity? ⇒ Boolean

Specifies if this is an entity node

Returns:

  • (Boolean) 


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# File 'lib/libxml/node.rb', line 252

def entity?
  node_type == ENTITY_NODE
end

#entity_ref? ⇒ Boolean

Specifies if this is an entity reference node

Returns:

  • (Boolean) 


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# File 'lib/libxml/node.rb', line 262

def entity_ref?
  node_type == ENTITY_REF_NODE
end

#eql?(other_node) ⇒ Boolean Also known as: ==

Test equality between the two nodes. Two nodes are equal if they are the same node.

Returns:

  • (Boolean) 


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# File 'ext/libxml/ruby_xml_node.c', line 677

static VALUE rxml_node_eql_q(VALUE self, VALUE other)
{
  if (self == other)
  {
    return Qtrue;
  }
  else if (NIL_P(other))
  {
    return Qfalse;
  }
  else
  {
    xmlNodePtr xnode = rxml_get_xnode(self);
    xmlNodePtr xnode_other = rxml_get_xnode(other);
    return xnode == xnode_other ? Qtrue : Qfalse;
  }
}

#find(xpath, nslist = nil) ⇒ Object

call-seq:

node.find(namespaces=nil) -> XPath::XPathObject

Return nodes matching the specified xpath expression. For more information, please refer to the documentation for XML::Document#find.

Namespaces is an optional array of XML::NS objects



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# File 'lib/libxml/node.rb', line 74

def find(xpath, nslist = nil)
  self.context(nslist).find(xpath)
end

#find_first(xpath, nslist = nil) ⇒ Object

call-seq:

node.find_first(namespaces=nil) -> XML::Node

Return the first node matching the specified xpath expression. For more information, please refer to the documentation for the #find method.



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# File 'lib/libxml/node.rb', line 84

def find_first(xpath, nslist = nil)
  find(xpath, nslist).first
end

#first ⇒ XML::Node Also known as: child

Returns this node’s first child node if any.

Returns:



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# File 'ext/libxml/ruby_xml_node.c', line 449

static VALUE rxml_node_first_get(VALUE self)
{
  xmlNodePtr xnode;

  xnode = rxml_get_xnode(self);

  if (xnode->children)
    return (rxml_node_wrap(xnode->children));
  else
    return (Qnil);
}

#first? ⇒ Boolean Also known as: child?, children?

Determines whether this node has a first node

Returns:

  • (Boolean) 


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# File 'lib/libxml/node.rb', line 126

def first?
  not first.nil?
end

#fragment? ⇒ Boolean

Specifies if this is a fragment node

Returns:

  • (Boolean) 


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# File 'lib/libxml/node.rb', line 267

def fragment?
  node_type == DOCUMENT_FRAG_NODE
end

#html_doc? ⇒ Boolean

Specifies if this is a html document node

Returns:

  • (Boolean) 


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# File 'lib/libxml/node.rb', line 272

def html_doc?
  node_type == HTML_DOCUMENT_NODE
end

#inner_xml(options = Hash.new) ⇒ Object

call-seq:

node.inner_xml -> "string"
node.inner_xml(:indent => true, :encoding => 'UTF-8', :level => 0) -> "string"

Converts a node’s children to a string representation. To include the node, use XML::Node#to_s. For more information about the supported options, see XML::Node#to_s.



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# File 'lib/libxml/node.rb', line 26

def inner_xml(options = Hash.new)
  io = nil
  self.each do |node|
    xml = node.to_s(options)
    # Create the string IO here since we now know the encoding

    io = create_string_io(xml) unless io
    io << xml
  end

  io ? io.string : nil
end

#lang ⇒ Object

Obtain the language set for this node, if any. This is set in XML via the xml:lang attribute.



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# File 'ext/libxml/ruby_xml_node.c', line 702

static VALUE rxml_node_lang_get(VALUE self)
{
  xmlNodePtr xnode;
  xmlChar *lang;
  VALUE result = Qnil;

  xnode = rxml_get_xnode(self);
  lang = xmlNodeGetLang(xnode);

  if (lang)
  {
    result = rxml_new_cstr( lang, NULL);
    xmlFree(lang);
  }

  return (result);
}

#lang=(lang) ⇒ Object

Set the language for this node. This affects the value of the xml:lang attribute.



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# File 'ext/libxml/ruby_xml_node.c', line 729

static VALUE rxml_node_lang_set(VALUE self, VALUE lang)
{
  xmlNodePtr xnode;

  Check_Type(lang, T_STRING);
  xnode = rxml_get_xnode(self);
  xmlNodeSetLang(xnode, (xmlChar*) StringValuePtr(lang));

  return (Qtrue);
}

#last ⇒ XML::Node

Obtain the last child node of this node, if any.

Returns:



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# File 'ext/libxml/ruby_xml_node.c', line 746

static VALUE rxml_node_last_get(VALUE self)
{
  xmlNodePtr xnode;

  xnode = rxml_get_xnode(self);

  if (xnode->last)
    return (rxml_node_wrap(xnode->last));
  else
    return (Qnil);
}

#last? ⇒ Boolean

Determines whether this node has a last node

Returns:

  • (Boolean) 


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# File 'lib/libxml/node.rb', line 146

def last?
  not last.nil?
end

#line_num ⇒ Numeric

Obtain the line number (in the XML document) that this node was read from. If default_line_numbers is set false (the default), this method returns zero.

Returns:

  • (Numeric) 


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# File 'ext/libxml/ruby_xml_node.c', line 766

static VALUE rxml_node_line_num(VALUE self)
{
  xmlNodePtr xnode;
  long line_num;
  xnode = rxml_get_xnode(self);

  if (!xmlLineNumbersDefaultValue)
    rb_warn(
        "Line numbers were not retained: use XML::Parser::default_line_numbers=true");

  line_num = xmlGetLineNo(xnode);
  if (line_num == -1)
    return (Qnil);
  else
    return (INT2NUM((long) line_num));
}

#name ⇒ Object

Obtain this node’s name.



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# File 'ext/libxml/ruby_xml_node.c', line 862

static VALUE rxml_node_name_get(VALUE self)
{
  xmlNodePtr xnode;
  const xmlChar *name;

  xnode = rxml_get_xnode(self);

  switch (xnode->type)
  {
  case XML_DOCUMENT_NODE:
#ifdef LIBXML_DOCB_ENABLED

    case XML_DOCB_DOCUMENT_NODE:
#endif

  case XML_HTML_DOCUMENT_NODE:
  {
    xmlDocPtr doc = (xmlDocPtr) xnode;
    name = doc->URL;
    break;
  }
  case XML_ATTRIBUTE_NODE:
  {
    xmlAttrPtr attr = (xmlAttrPtr) xnode;
    name = attr->name;
    break;
  }
  case XML_NAMESPACE_DECL:
  {
    xmlNsPtr ns = (xmlNsPtr) xnode;
    name = ns->prefix;
    break;
  }
  default:
    name = xnode->name;
    break;
  }

  if (xnode->name == NULL)
    return (Qnil);
  else
    return (rxml_new_cstr( name, NULL));
}

#name=(name) ⇒ Object

Set this node’s name.



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# File 'ext/libxml/ruby_xml_node.c', line 910

static VALUE rxml_node_name_set(VALUE self, VALUE name)
{
  xmlNodePtr xnode;
  const xmlChar *xname;

  Check_Type(name, T_STRING);
  xnode = rxml_get_xnode(self);
  xname = (const xmlChar*)StringValuePtr(name);

  /* Note: calling xmlNodeSetName() for a text node is ignored by libXML. */
  xmlNodeSetName(xnode, xname);

  return (Qtrue);
}

#namespace? ⇒ Boolean

Specifies if this is a namespace node (not if it has a namepsace)

Returns:

  • (Boolean) 


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# File 'lib/libxml/node.rb', line 278

def namespace?
  node_type == NAMESPACE_DECL
end

#namespaces ⇒ Object

call-seq:

node.namespacess -> XML::Namespaces

Returns this node’s XML::Namespaces object, which is used to access the namespaces associated with this node.



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# File 'lib/libxml/node.rb', line 94

def namespaces
  @namespaces ||= XML::Namespaces.new(self)
end

#next ⇒ XML::Node

Returns the next sibling node if one exists.

Returns:



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# File 'ext/libxml/ruby_xml_node.c', line 931

static VALUE rxml_node_next_get(VALUE self)
{
  xmlNodePtr xnode;

  xnode = rxml_get_xnode(self);

  if (xnode->next)
    return (rxml_node_wrap(xnode->next));
  else
    return (Qnil);
}

#next=(node) ⇒ Object

Adds the specified node as the next sibling of the current node. If the node already exists in the document, it is first removed from its existing context. Any adjacent text nodes will be merged together, meaning the returned node may be different than the original node.



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# File 'ext/libxml/ruby_xml_node.c', line 953

static VALUE rxml_node_next_set(VALUE self, VALUE next)
{
  return rxml_node_modify_dom(self, next, xmlAddNextSibling);
}

#next? ⇒ Boolean

Determines whether this node has a next node

Returns:

  • (Boolean) 


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# File 'lib/libxml/node.rb', line 136

def next?
  not self.next.nil?
end

#type ⇒ Numeric

Obtain this node’s type identifier.

Returns:

  • (Numeric) 


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# File 'ext/libxml/ruby_xml_node.c', line 1267

static VALUE rxml_node_type(VALUE self)
{
  xmlNodePtr xnode;
  xnode = rxml_get_xnode(self);
  return (INT2NUM(xnode->type));
}

#node_type_name ⇒ Object

Returns this node’s type name



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# File 'lib/libxml/node.rb', line 154

def node_type_name
  case node_type
    # Most common choices first

    when ATTRIBUTE_NODE
      'attribute'
    when DOCUMENT_NODE
      'document_xml'
    when ELEMENT_NODE
      'element'
    when TEXT_NODE
      'text'
    
    # Now the rest  

    when ATTRIBUTE_DECL
      'attribute_decl'
    when CDATA_SECTION_NODE
      'cdata'
    when COMMENT_NODE
      'comment'
    when DOCB_DOCUMENT_NODE
      'document_docbook'
    when DOCUMENT_FRAG_NODE
      'fragment'
    when DOCUMENT_TYPE_NODE
      'doctype'
    when DTD_NODE
      'dtd'
    when ELEMENT_DECL
      'elem_decl'
    when ENTITY_DECL
      'entity_decl'
    when ENTITY_NODE
      'entity'
    when ENTITY_REF_NODE
      'entity_ref'
    when HTML_DOCUMENT_NODE
      'document_html'
    when NAMESPACE_DECL
      'namespace'
    when NOTATION_NODE
      'notation'
    when PI_NODE
      'pi'
    when XINCLUDE_START
      'xinclude_start'
    when XINCLUDE_END
      'xinclude_end'
    else
      raise(UnknownType, "Unknown node type: %n", node.node_type);
  end
end

#notation? ⇒ Boolean

Specifies if this is a notation node

Returns:

  • (Boolean) 


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# File 'lib/libxml/node.rb', line 283

def notation?
  node_type == NOTATION_NODE
end

#output_escaping=(true) ⇒ Object #output_escaping=(true) ⇒ Object #output_escaping=(true) ⇒ Object

Controls whether this text node or the immediate text node children of an element or attribute node escapes their output. Any other type of node will simply ignore this operation.

Text nodes which are added to an element or attribute node will be affected by any previous setting of this property.



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# File 'ext/libxml/ruby_xml_node.c', line 1202

static VALUE rxml_node_output_escaping_set(VALUE self, VALUE value)
{
  xmlNodePtr xnode;
  xnode = rxml_get_xnode(self);

  switch (xnode->type) {
  case XML_TEXT_NODE:
    xnode->name = (value != Qfalse && value != Qnil) ? xmlStringText : xmlStringTextNoenc;
    break;
  case XML_ELEMENT_NODE:
  case XML_ATTRIBUTE_NODE:
    {
      const xmlChar *name = (value != Qfalse && value != Qnil) ? xmlStringText : xmlStringTextNoenc;
      xmlNodePtr tmp;
      for (tmp = xnode->children; tmp; tmp = tmp->next)
        if (tmp->type == XML_TEXT_NODE)
          tmp->name = name;
    }
    break;
  default:
    return Qnil;
  }

  return (value!=Qfalse && value!=Qnil) ? Qtrue : Qfalse;
}

#output_escaping? ⇒ Boolean #output_escaping? ⇒ Boolean #output_escaping? ⇒ Boolean #output_escaping? ⇒ Boolean

Determine whether this node escapes it’s output or not.

Text nodes return only true or false. Element and attribute nodes examine their immediate text node children to determine the value. Any other type of node always returns nil.

If an element or attribute node has at least one immediate child text node and all the immediate text node children have the same output_escaping? value, that value is returned. Otherwise, nil is returned.

Returns:

  • (Boolean) 


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# File 'ext/libxml/ruby_xml_node.c', line 1155

static VALUE rxml_node_output_escaping_q(VALUE self)
{
  xmlNodePtr xnode;
  xnode = rxml_get_xnode(self);

  switch (xnode->type) {
  case XML_TEXT_NODE:
    return xnode->name==xmlStringTextNoenc ? Qfalse : Qtrue;
  case XML_ELEMENT_NODE:
  case XML_ATTRIBUTE_NODE:
    {
      xmlNodePtr tmp = xnode->children;
      const xmlChar *match = NULL;

      /* Find the first text node and use it as the reference. */
      while (tmp && tmp->type != XML_TEXT_NODE)
        tmp = tmp->next;
      if (! tmp)
        return Qnil;
      match = tmp->name;

      /* Walk the remaining text nodes until we run out or one doesn't match. */
      while (tmp && (tmp->type != XML_TEXT_NODE || match == tmp->name))
        tmp = tmp->next;

      /* We're left with either the mismatched node or the aggregate result. */
      return tmp ? Qnil : (match==xmlStringTextNoenc ? Qfalse : Qtrue);
    }
    break;
  default:
    return Qnil;
  }
}

#parent ⇒ XML::Node

Obtain this node’s parent node, if any.

Returns:



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# File 'ext/libxml/ruby_xml_node.c', line 964

static VALUE rxml_node_parent_get(VALUE self)
{
  xmlNodePtr xnode;

  xnode = rxml_get_xnode(self);

  if (xnode->parent)
    return (rxml_node_wrap(xnode->parent));
  else
    return (Qnil);
}

#parent? ⇒ Boolean

Determines whether this node has a parent node

Returns:

  • (Boolean) 


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# File 'lib/libxml/node.rb', line 121

def parent?
  not parent.nil?
end

#path ⇒ Object

Obtain this node’s path.



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# File 'ext/libxml/ruby_xml_node.c', line 982

static VALUE rxml_node_path(VALUE self)
{
  xmlNodePtr xnode;
  xmlChar *path;

  xnode = rxml_get_xnode(self);
  path = xmlGetNodePath(xnode);

  if (path == NULL)
    return (Qnil);
  else
    return (rxml_new_cstr( path, NULL));
}

#pi? ⇒ Boolean

Specifies if this is a processiong instruction node

Returns:

  • (Boolean) 


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# File 'lib/libxml/node.rb', line 288

def pi?
  node_type == PI_NODE
end

#pointer ⇒ XML::NodeSet

Evaluates an XPointer expression relative to this node.

Returns:

  • (XML::NodeSet) 


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# File 'ext/libxml/ruby_xml_node.c', line 1002

static VALUE rxml_node_pointer(VALUE self, VALUE xptr_str)
{
  return (rxml_xpointer_point2(self, xptr_str));
}

#prev ⇒ XML::Node

Obtain the previous sibling, if any.

Returns:



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# File 'ext/libxml/ruby_xml_node.c', line 1013

static VALUE rxml_node_prev_get(VALUE self)
{
  xmlNodePtr xnode;
  xmlNodePtr node;
  xnode = rxml_get_xnode(self);

  switch (xnode->type)
  {
  case XML_DOCUMENT_NODE:
#ifdef LIBXML_DOCB_ENABLED

    case XML_DOCB_DOCUMENT_NODE:
#endif

  case XML_HTML_DOCUMENT_NODE:
  case XML_NAMESPACE_DECL:
    node = NULL;
    break;
  case XML_ATTRIBUTE_NODE:
  {
    xmlAttrPtr attr = (xmlAttrPtr) xnode;
    node = (xmlNodePtr) attr->prev;
  }
    break;
  default:
    node = xnode->prev;
    break;
  }

  if (node == NULL)
    return (Qnil);
  else
    return (rxml_node_wrap(node));
}

#prev=(node) ⇒ Object

Adds the specified node as the previous sibling of the current node. If the node already exists in the document, it is first removed from its existing context. Any adjacent text nodes will be merged together, meaning the returned node may be different than the original node.



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# File 'ext/libxml/ruby_xml_node.c', line 1056

static VALUE rxml_node_prev_set(VALUE self, VALUE prev)
{
  return rxml_node_modify_dom(self, prev, xmlAddPrevSibling);
}

#prev? ⇒ Boolean

Determines whether this node has a previous node

Returns:

  • (Boolean) 


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# File 'lib/libxml/node.rb', line 141

def prev?
  not prev.nil?
end

#remove! ⇒ Object

Removes this node and its children from the document tree by setting its document, parent and siblings to nil. You can add the returned node back into a document. Otherwise, the node will be freed once any references to it go out of scope.



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# File 'ext/libxml/ruby_xml_node.c', line 1109

static VALUE rxml_node_remove_ex(VALUE self)
{
  xmlNodePtr xnode = rxml_get_xnode(self);
 
  // Now unlink the node from its parent
  xmlUnlinkNode(xnode);

  // Ruby now manages this node
  rxml_node_manage(xnode, self);

  // Now return the removed node so the user can do something with it
  return self;
}

#sibling=(node) ⇒ Object

Adds the specified node as the end of the current node’s list of siblings. If the node already exists in the document, it is first removed from its existing context. Any adjacent text nodes will be merged together, meaning the returned node may be different than the original node.



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# File 'ext/libxml/ruby_xml_node.c', line 1133

static VALUE rxml_node_sibling_set(VALUE self, VALUE sibling)
{
  return rxml_node_modify_dom(self, sibling, xmlAddSibling);
}

#space_preserve ⇒ Object

Determine whether this node preserves whitespace.



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# File 'ext/libxml/ruby_xml_node.c', line 1234

static VALUE rxml_node_space_preserve_get(VALUE self)
{
  xmlNodePtr xnode;

  xnode = rxml_get_xnode(self);
  return (INT2NUM(xmlNodeGetSpacePreserve(xnode)));
}

#space_preserve=(true) ⇒ Object

Control whether this node preserves whitespace.



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# File 'ext/libxml/ruby_xml_node.c', line 1248

static VALUE rxml_node_space_preserve_set(VALUE self, VALUE value)
{
  xmlNodePtr xnode;
  xnode = rxml_get_xnode(self);

  if (value == Qfalse)
    xmlNodeSetSpacePreserve(xnode, 0);
  else
    xmlNodeSetSpacePreserve(xnode, 1);

  return (Qnil);
}

#text? ⇒ Boolean

Specifies if this is a text node

Returns:

  • (Boolean) 


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# File 'lib/libxml/node.rb', line 293

def text?
  node_type == TEXT_NODE
end

#to_s ⇒ Object #to_s(: indent) ⇒ true

Converts a node, and all of its children, to a string representation. To include only the node’s children, use the the XML::Node#inner_xml method.

You may provide an optional hash table to control how the string is generated. Valid options are:

:indent - Specifies if the string should be indented. The default value is true. Note that indentation is only added if both :indent is true and XML.indent_tree_output is true. If :indent is set to false, then both indentation and line feeds are removed from the result.

:level - Specifies the indentation level. The amount of indentation is equal to the (level * number_spaces) + number_spaces, where libxml defaults the number of spaces to 2. Thus a level of 0 results in 2 spaces, level 1 results in 4 spaces, level 2 results in 6 spaces, etc.

:encoding - Specifies the output encoding of the string. It defaults to XML::Encoding::UTF8. To change it, use one of the XML::Encoding encoding constants.

Overloads:

  • #to_s(: indent) ⇒ true

    Returns:

    • (true) 


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# File 'ext/libxml/ruby_xml_node.c', line 561

static VALUE rxml_node_to_s(int argc, VALUE *argv, VALUE self)
{
  VALUE result = Qnil;
  VALUE options = Qnil;
  xmlNodePtr xnode;
  xmlCharEncodingHandlerPtr encodingHandler;
  xmlOutputBufferPtr output;

  int level = 0;
  int indent = 1;
  const xmlChar *xencoding = (const xmlChar*)"UTF-8";

  rb_scan_args(argc, argv, "01", &options);

  if (!NIL_P(options))
  {
    VALUE rencoding, rindent, rlevel;
    Check_Type(options, T_HASH);
    rencoding = rb_hash_aref(options, ID2SYM(rb_intern("encoding")));
    rindent = rb_hash_aref(options, ID2SYM(rb_intern("indent")));
    rlevel = rb_hash_aref(options, ID2SYM(rb_intern("level")));

    if (rindent == Qfalse)
      indent = 0;

    if (rlevel != Qnil)
      level = NUM2INT(rlevel);

    if (rencoding != Qnil)
    {
      xencoding = (const xmlChar*)xmlGetCharEncodingName((xmlCharEncoding)NUM2INT(rencoding));
      if (!xencoding)
        rb_raise(rb_eArgError, "Unknown encoding value: %d", NUM2INT(rencoding));
    }
  }

  encodingHandler = xmlFindCharEncodingHandler((const char*)xencoding);
  output = xmlAllocOutputBuffer(encodingHandler);

  xnode = rxml_get_xnode(self);

  xmlNodeDumpOutput(output, xnode->doc, xnode, level, indent, (const char*)xencoding);
  xmlOutputBufferFlush(output);

#ifdef LIBXML2_NEW_BUFFER

  if (output->conv)
    result = rxml_new_cstr(xmlBufContent(output->conv), xencoding);
  else
    result = rxml_new_cstr(xmlBufContent(output->buffer), xencoding);
#else

  if (output->conv)
    result = rxml_new_cstr(xmlBufferContent(output->conv), xencoding);
  else
    result = rxml_new_cstr(xmlBufferContent(output->buffer), xencoding);
#endif


  xmlOutputBufferClose(output);
  
  return result;
}

#xinclude_end? ⇒ Boolean

Specifies if this is an xinclude end node

Returns:

  • (Boolean) 


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# File 'lib/libxml/node.rb', line 298

def xinclude_end?
  node_type == XINCLUDE_END
end

#xinclude_start? ⇒ Boolean

Specifies if this is an xinclude start node

Returns:

  • (Boolean) 


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# File 'lib/libxml/node.rb', line 303

def xinclude_start?
  node_type == XINCLUDE_START
end

#xlink? ⇒ Boolean

Determine whether this node is an xlink node.

Returns:

  • (Boolean) 


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# File 'ext/libxml/ruby_xml_node.c', line 789

static VALUE rxml_node_xlink_q(VALUE self)
{
  xmlNodePtr xnode;
  xlinkType xlt;

  xnode = rxml_get_xnode(self);
  xlt = xlinkIsLink(xnode->doc, xnode);

  if (xlt == XLINK_TYPE_NONE)
    return (Qfalse);
  else
    return (Qtrue);
}

#xlink_type ⇒ Numeric

Obtain the type identifier for this xlink, if applicable. If this is not an xlink node (see xlink?), will return nil.

Returns:

  • (Numeric) 


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# File 'ext/libxml/ruby_xml_node.c', line 811

static VALUE rxml_node_xlink_type(VALUE self)
{
  xmlNodePtr xnode;
  xlinkType xlt;

  xnode = rxml_get_xnode(self);
  xlt = xlinkIsLink(xnode->doc, xnode);

  if (xlt == XLINK_TYPE_NONE)
    return (Qnil);
  else
    return (INT2NUM(xlt));
}

#xlink_type_name ⇒ Object

Obtain the type name for this xlink, if applicable. If this is not an xlink node (see xlink?), will return nil.



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# File 'ext/libxml/ruby_xml_node.c', line 833

static VALUE rxml_node_xlink_type_name(VALUE self)
{
  xmlNodePtr xnode;
  xlinkType xlt;

  xnode = rxml_get_xnode(self);
  xlt = xlinkIsLink(xnode->doc, xnode);

  switch (xlt)
  {
  case XLINK_TYPE_NONE:
    return (Qnil);
  case XLINK_TYPE_SIMPLE:
    return (rxml_new_cstr((const xmlChar*)"simple", NULL));
  case XLINK_TYPE_EXTENDED:
    return (rxml_new_cstr((const xmlChar*)"extended", NULL));
  case XLINK_TYPE_EXTENDED_SET:
    return (rxml_new_cstr((const xmlChar*)"extended_set", NULL));
  default:
    rb_fatal("Unknowng xlink type, %d", xlt);
  }
}