Init.HEADmaster

1 files changed, 112 insertions, 0 deletions

diff --git a/hw6/src/sceneIO_xml.cpp b/hw6/src/sceneIO_xml.cpp
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+++ b/hw6/src/sceneIO_xml.cpp
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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;
+  return *this;
+}
+
+
+XMLNode& XMLNode::operator++(int)
+{
+  assert(_element != NULL);
+  _element = _element->NextSiblingElement();
+  return *this;
+}
+
+
+XMLNode& XMLNode::operator++(void)
+{
+  assert(_element != NULL);
+  _element = _element->NextSiblingElement();
+  return *this;
+}
+
+