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/******************************************************************/
/* This file is part of the homework assignments for CSCI-427/527 */
/* at The College of William & Mary and authored by Pieter Peers. */
/* No part of this file, whether altered or in original form, can */
/* be distributed or used outside the context of CSCI-427/527 */
/* without consent of either the College of William & Mary or */
/* Pieter Peers. */
/******************************************************************/
#include <cassert>
#include "sceneIO_xml.h"
#include "errorMessage.h"
/////////////////
// Constructor //
/////////////////
XMLNode::XMLNode(const std::string& filename)
{
// open xml
_xml = std::make_shared<tinyxml2::XMLDocument>();
_xml->LoadFile(filename.c_str());
// check if open successful
if(_xml->ErrorID() != tinyxml2::XML_SUCCESS)
errorMessage("Failed to open scene file: '%s'.", filename.c_str());
// set first node.
_element = _xml->FirstChildElement("scene");
}
XMLNode::XMLNode(const XMLNode& node)
{
_element = node._element;
_xml = node._xml;
}
XMLNode::XMLNode(const tinyxml2::XMLElement* element, const std::shared_ptr<tinyxml2::XMLDocument>& xml)
{
_element = element;
_xml = xml;
}
/////////////
// Methods //
/////////////
XMLNode XMLNode::firstChild(void) const
{
assert(isValid());
return XMLNode(_element->FirstChildElement(), _xml);
}
XMLNode XMLNode::findChild(const std::string& name) const
{
assert(isValid());
return XMLNode(_element->FirstChildElement(name.c_str()), _xml);
}
bool XMLNode::isValid(void) const
{
return (_element != NULL);
}
std::string XMLNode::name(void) const
{
assert(isValid());
return std::string(_element->Name());
}
std::string XMLNode::attribute(const std::string& attribute) const
{
assert(isValid());
const char* str = _element->Attribute(attribute.c_str());
if(str == NULL) return std::string("");
// Done.
return std::string(str);
}
///////////////
// Operators //
///////////////
XMLNode& XMLNode::operator=(const XMLNode& src)
{
_element = src._element;
_xml = src._xml;
}
XMLNode& XMLNode::operator++(int)
{
assert(_element != NULL);
_element = _element->NextSiblingElement();
}
XMLNode& XMLNode::operator++(void)
{
assert(_element != NULL);
_element = _element->NextSiblingElement();
}
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