C++ TiXmlComment::Value方法代码示例

const char* SimXMLDocument::readComment( S32 index )
{
   // Clear the current attribute pointer
   m_CurrentAttribute = 0;

   // Push the first element found under the current element of the given name
   if(!m_paNode.empty())
   {
      const int iLastElement = m_paNode.size() - 1;
      TiXmlElement* pNode = m_paNode[iLastElement];
      if(!pNode)
      {
         return "";
      }
      TiXmlNode* node = pNode->FirstChild();
      for( S32 i = 0; i < index; i++ )
      {
         if( !node )
            return "";

         node = node->NextSiblingElement();
      }

      if( node )
      {
         TiXmlComment* comment = node->ToComment();
         if( comment )
            return comment->Value();
      }
   }
   else
   {
      if(!m_qDocument)
      {
         return "";
      }
      TiXmlNode* node = m_qDocument->FirstChild();
      for( S32 i = 0; i < index; i++ )
      {
         if( !node )
            return "";

         node = node->NextSibling();
      }

      if( node )
      {
         TiXmlComment* comment = node->ToComment();
         if( comment )
            return comment->Value();
      }
   }
   return "";
}

bool TiXmlPrinter::Visit( const TiXmlComment& comment )
{
	DoIndent();
	buffer += "<!--";
	buffer += comment.Value();
	buffer += "-->";
	DoLineBreak();
	return true;
}

int main()
{

	//
	// We start with the 'demoStart' todo list. Process it. And
	// should hopefully end up with the todo list as illustrated.
	//
	const char* demoStart =
		"<?xml version=\"1.0\"  standalone='no' >\n"
		"<!-- Our to do list data -->"
		"<ToDo>\n"
		"<!-- Do I need a secure PDA? -->\n"
		"<Item priority=\"1\" distance='close'> Go to the <bold>Toy store!</bold></Item>"
		"<Item priority=\"2\" distance='none'> Do bills   </Item>"
		"<Item priority=\"2\" distance='far &amp; back'> Look for Evil Dinosaurs! </Item>"
		"</ToDo>";
		
	{

	#ifdef TIXML_USE_STL
		//	What the todo list should look like after processing.
		// In stream (no formatting) representation.
		const char* demoEnd =
			"<?xml version=\"1.0\" standalone=\"no\" ?>"
			"<!-- Our to do list data -->"
			"<ToDo>"
			"<!-- Do I need a secure PDA? -->"
			"<Item priority=\"2\" distance=\"close\">Go to the"
			"<bold>Toy store!"
			"</bold>"
			"</Item>"
			"<Item priority=\"1\" distance=\"far\">Talk to:"
			"<Meeting where=\"School\">"
			"<Attendee name=\"Marple\" position=\"teacher\" />"
			"<Attendee name=\"Voel\" position=\"counselor\" />"
			"</Meeting>"
			"<Meeting where=\"Lunch\" />"
			"</Item>"
			"<Item priority=\"2\" distance=\"here\">Do bills"
			"</Item>"
			"</ToDo>";
	#endif

		// The example parses from the character string (above):
		#if defined( WIN32 ) && defined( TUNE )
		_CrtMemCheckpoint( &startMemState );
		#endif	

		{
			// Write to a file and read it back, to check file I/O.

			TiXmlDocument doc( "demotest.xml" );
			doc.Parse( demoStart );

			if ( doc.Error() )
			{
				printf( "Error in %s: %s\n", doc.Value(), doc.ErrorDesc() );
				exit( 1 );
			}
			doc.SaveFile();
		}

		TiXmlDocument doc( "demotest.xml" );
		bool loadOkay = doc.LoadFile();

		if ( !loadOkay )
		{
			printf( "Could not load test file 'demotest.xml'. Error='%s'. Exiting.\n", doc.ErrorDesc() );
			exit( 1 );
		}

		printf( "** Demo doc read from disk: ** \n\n" );
		printf( "** Printing via doc.Print **\n" );
		doc.Print( stdout );

		{
			printf( "** Printing via TiXmlPrinter **\n" );
			TiXmlPrinter printer;
			doc.Accept( &printer );
			fprintf( stdout, "%s", printer.CStr() );
		}
		#ifdef TIXML_USE_STL	
		{
			printf( "** Printing via operator<< **\n" );
			std::cout << doc;
		}
		#endif
		TiXmlNode* node = 0;
		TiXmlElement* todoElement = 0;
		TiXmlElement* itemElement = 0;


		// --------------------------------------------------------
		// An example of changing existing attributes, and removing
		// an element from the document.
		// --------------------------------------------------------

		// Get the "ToDo" element.
		// It is a child of the document, and can be selected by name.
		node = doc.FirstChild( "ToDo" );
//.........这里部分代码省略.........

int main()
{
	//
	// We start with the 'demoStart' todo list. Process it. And
	// should hopefully end up with the todo list as illustrated.
	//
	const char* demoStart =
		"<?xml version=\"1.0\"  standalone='no' >\n"
		"<!-- Our to do list data -->"
		"<ToDo>\n"
		"<!-- Do I need a secure PDA? -->\n"
		"<Item priority=\"1\" distance='close'> Go to the <bold>Toy store!</bold></Item>"
		"<Item priority=\"2\" distance='none'> Do bills   </Item>"
		"<Item priority=\"2\" distance='far &amp; back'> Look for Evil Dinosaurs! </Item>"
		"</ToDo>";

#ifdef TIXML_USE_STL
	/*	What the todo list should look like after processing.
		In stream (no formatting) representation. */
	const char* demoEnd =
		"<?xml version=\"1.0\" standalone=\"no\" ?>"
		"<!-- Our to do list data -->"
		"<ToDo>"
		"<!-- Do I need a secure PDA? -->"
		"<Item priority=\"2\" distance=\"close\">Go to the"
		"<bold>Toy store!"
		"</bold>"
		"</Item>"
		"<Item priority=\"1\" distance=\"far\">Talk to:"
		"<Meeting where=\"School\">"
		"<Attendee name=\"Marple\" position=\"teacher\" />"
		"<Attendee name=\"Voel\" position=\"counselor\" />"
		"</Meeting>"
		"<Meeting where=\"Lunch\" />"
		"</Item>"
		"<Item priority=\"2\" distance=\"here\">Do bills"
		"</Item>"
		"</ToDo>";
#endif

	// The example parses from the character string (above):
	#if defined( WIN32 ) && defined( TUNE )
	QueryPerformanceCounter( (LARGE_INTEGER*) (&start) );
	#endif

	{
		// Write to a file and read it back, to check file I/O.

		TiXmlDocument doc( "demotest.xml" );
		doc.Parse( demoStart );

		if ( doc.Error() )
		{
			printf( "Error in %s: %s\n", doc.Value(), doc.ErrorDesc() );
			exit( 1 );
		}
		doc.SaveFile();
	}

	TiXmlDocument doc( "demotest.xml" );
	bool loadOkay = doc.LoadFile();

	if ( !loadOkay )
	{
		printf( "Could not load test file 'demotest.xml'. Error='%s'. Exiting.\n", doc.ErrorDesc() );
		exit( 1 );
	}

	printf( "** Demo doc read from disk: ** \n\n" );
	doc.Print( stdout );

	TiXmlNode* node = 0;
	TiXmlElement* todoElement = 0;
	TiXmlElement* itemElement = 0;


	// --------------------------------------------------------
	// An example of changing existing attributes, and removing
	// an element from the document.
	// --------------------------------------------------------

	// Get the "ToDo" element.
	// It is a child of the document, and can be selected by name.
	node = doc.FirstChild( "ToDo" );
	assert( node );
	todoElement = node->ToElement();
	assert( todoElement  );

	// Going to the toy store is now our second priority...
	// So set the "priority" attribute of the first item in the list.
	node = todoElement->FirstChildElement();	// This skips the "PDA" comment.
	assert( node );
	itemElement = node->ToElement();
	assert( itemElement  );
	itemElement->SetAttribute( "priority", 2 );

	// Change the distance to "doing bills" from
	// "none" to "here". It's the next sibling element.
	itemElement = itemElement->NextSiblingElement();
	assert( itemElement );
//.........这里部分代码省略.........