/*
* call-seq:
* context.node -> node
*
* Obtain the root node of this context.
*/
VALUE
ruby_xml_parser_context_node_get(VALUE self) {
ruby_xml_parser_context *rxpc;
Data_Get_Struct(self, ruby_xml_parser_context, rxpc);
if (rxpc->ctxt->node == NULL)
return(Qnil);
else
return(ruby_xml_node2_wrap(cXMLNode,
rxpc->ctxt->node));
}
/*
* call-seq:
* node.first -> XML::Node
*
* Returns this node's first child node if any.
*/
VALUE
ruby_xml_node_first_get(VALUE self) {
xmlNodePtr xnode;
Data_Get_Struct(self, xmlNode, xnode);
if (xnode->children)
return(ruby_xml_node2_wrap(cXMLNode, xnode->children));
else
return(Qnil);
}
/*
* call-seq:
* document.child -> node
*
* Get this document's child node.
*/
VALUE
ruby_xml_document_child_get(VALUE self) {
ruby_xml_document_t *rxd;
Data_Get_Struct(self, ruby_xml_document_t, rxd);
if (rxd->doc->children == NULL)
return(Qnil);
return ruby_xml_node2_wrap(cXMLNode, rxd->doc->children);
}
/*
* call-seq:
* node.each -> XML::Node
*
* 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}
*/
VALUE
ruby_xml_node_each(VALUE self) {
xmlNodePtr xnode;
xmlNodePtr xchild;
Data_Get_Struct(self, xmlNode, xnode);
xchild = xnode->children;
while (xchild) {
rb_yield(ruby_xml_node2_wrap(cXMLNode, xchild));
xchild = xchild->next;
}
return Qnil;
}
/*
* underlying for child_set and child_add, difference being
* former raises on implicit copy, latter does not.
*/
VALUE
ruby_xml_node_child_set_aux(VALUE self, VALUE rnode) {
xmlNodePtr pnode, chld, ret;
if (rb_obj_is_kind_of(rnode, cXMLNode) == Qfalse)
rb_raise(rb_eTypeError, "Must pass an XML::Node object");
Data_Get_Struct(self, xmlNode, pnode);
Data_Get_Struct(rnode, xmlNode, chld);
if ( chld->parent != NULL || chld->doc != NULL )
rb_raise(rb_eRuntimeError, "Cannot move a node from one document to another with child= or <<. First copy the node before moving it.");
ret = xmlAddChild(pnode, chld);
if (ret == NULL) {
rb_raise(eXMLNodeFailedModify, "unable to add a child to the document");
} else if ( ret==chld ) {
/* child was added whole to parent and we need to return it as a new object */
return ruby_xml_node2_wrap(cXMLNode,chld);
}
/* else */
/* If it was a text node, then ret should be parent->last, so we will just return ret. */
return ruby_xml_node2_wrap(cXMLNode,ret);
}
