#include "StdAfx.h"
#include "SigmaView.h"
#include "sigmadoc.h"
#include "ItemMathFind.h"
#include "TinyXml\tinyxml.h"

extern "C" __declspec(dllexport)
int Sigma_MathFind(CSigmaView * pView, int kind, double step, double remainder, int start, char ** elementsContentBuffer)
{
	if (pView->m_pDoc == 0)
	{
		return -1;
	}

	// 创建一个XML的文档对象。
	TiXmlDocument *xmlDocument = new TiXmlDocument();
	//TiXmlDeclaration * decl = new TiXmlDeclaration("1.0", "UTF-8", "");
	//xmlDocument->LinkEndChild(decl);
	// 根元素。
	TiXmlElement *rootElement = new TiXmlElement("ROOT");
	xmlDocument->LinkEndChild(rootElement);

	CItemMathFind find(pView->m_pDoc);
	find.MathFind(kind, step, remainder, start, rootElement);
	
	TiXmlPrinter printer;
	xmlDocument->Accept(&printer);
	const char * xmlstr = printer.CStr();
	size_t len = strlen(xmlstr);
	if (len <= 0)
	{
		return -1;
	}

	char * dest = (char *)malloc(len + 1);
	strcpy(dest, xmlstr);
	*elementsContentBuffer = dest;
	xmlDocument->Clear();
	delete xmlDocument;

	return (int)len;
}

extern "C" __declspec(dllexport)
void Sigma_ReleaseNativeMemory(void * nativeMemory)
{
	delete nativeMemory;
}