#include "StdAfx.h"
#include "XMLEngineMI.h"

XML_API xi;

namespace
{
	class CXMLNodeMI : public IXMLNode,
					   private boost::noncopyable
	{
	public:
		typedef boost::shared_ptr<IXMLNode> TXMLNodePtr;

	public:
		explicit CXMLNodeMI(HXML hXMl,bool bDestroy = false) : m_hXML(hXMl),m_bDestroy(bDestroy)
		{
			assert(m_hXML);
		}

		virtual ~CXMLNodeMI()
		{
			if(m_bDestroy)
			{
 				xi.destroyNode(m_hXML);
			}
		}

		virtual size_t GetChildCount()const
		{
			return xi.getChildCount(m_hXML);
		}

		virtual TXMLNodePtr GetChildNode(size_t nIndex)const 
		{
			HXML h = xi.getChild(m_hXML, (int)nIndex);
			if(h)
			{
				return TXMLNodePtr(new CXMLNodeMI(h));
			}
			else
			{
				return TXMLNodePtr();
			}
		}

		virtual tstring GetText()const
		{
			tstring sResult;
			LPCTSTR psz = xi.getText(m_hXML);
			if(psz)
			{
				sResult = psz;
			}

			return sResult;
		}

		virtual tstring GetName()const
		{
			tstring sResult;
			LPCTSTR psz = xi.getName(m_hXML);
			if(psz)
			{
				sResult = psz;
			}

			return sResult;
		}

		virtual bool AddChild(const TXMLNodePtr& pNode)
		{
			CXMLNodeMI* pXML = dynamic_cast<CXMLNodeMI*>(pNode.get());
			if(pXML)
			{
				xi.addChild2(pXML->m_hXML,m_hXML);
				pXML->m_bDestroy = false;
				return true;
			}
			else
			{
				return false;
			}
		}

		virtual bool AddAttribute(const tstring& rsName,const tstring& rsValue)
		{
			xi.addAttr(m_hXML,rsName.c_str(),rsValue.c_str());
			return true;
		}

		virtual tstring GetAttributeValue(const tstring& rsAttrName)
		{
			LPCTSTR pszValue = xi.getAttrValue(m_hXML,rsAttrName.c_str());
			return ((NULL != pszValue) ? tstring(pszValue) : tstring());
		}

		virtual void Write(tostream& o)const
		{
// 			struct safe_string
// 			{				
// 				safe_string(LPTSTR p):m_p(p){}
// 				~safe_string(){xi.freeMem(m_p);}
// 
// 				LPTSTR m_p;
// 			};
// 
// 			struct mir_safe_string
// 			{
// 				mir_safe_string(LPSTR p) : m_p(p){}
// 				~mir_safe_string(){mir_free(m_p);}
// 
// 				LPSTR m_p;
// 			};


			safe_string<TCHAR> ss(xi.toString(m_hXML,NULL));
			if(ss.m_p)
			{
				mir_safe_string<char> mss(mir_utf8encodeT(ss.m_p));
				if(mss.m_p)
				{
					o << mss.m_p;
				}
			}
		}

	private:
		HXML m_hXML;
		bool m_bDestroy;
	};
}

CXMLEngineMI::CXMLEngineMI()
{
}

CXMLEngineMI::~CXMLEngineMI()
{
}

IXMLNode::TXMLNodePtr CXMLEngineMI::LoadFile(const tstring& rsFileName)const
{
// 	struct mir_safe_string
// 	{
// 		mir_safe_string(LPTSTR p) : m_p(p){}
// 		~mir_safe_string(){mir_free(m_p);}
// 
// 		LPTSTR m_p;
// 	};


	IXMLNode::TXMLNodePtr pResult;
	FILE* stream;
	if(0 == ::_tfopen_s(&stream,rsFileName.c_str(),_T("r")))
	{
		struct _stat st;
		if (-1 != ::_fstat(::_fileno(stream),&st))
		{
			std::vector<char> aBuffer(st.st_size+1);
			char* pBuffer = &*(aBuffer.begin());
			size_t cBytes = ::fread(pBuffer,sizeof(char),st.st_size,stream);
			if(cBytes > 0 && cBytes <= static_cast<size_t>(st.st_size))
			{
				pBuffer[cBytes] = '\0';

				int nLen = (int)cBytes;	
				mir_safe_string<TCHAR> ss(mir_utf8decodeT(pBuffer));
				if(ss.m_p)
				{
					HXML h = xi.parseString(ss.m_p,&nLen,NULL);
					if(h)
					{
						pResult = IXMLNode::TXMLNodePtr(new CXMLNodeMI(h,true));
					}
				}
			}
		}
		::fclose(stream);
	}

	return pResult;
}

namespace
{
	IXMLNode::TXMLNodePtr create_node(const tstring& rsName,const tstring& rsText,bool bIsDecl)
	{
		IXMLNode::TXMLNodePtr pResult;
		HXML h = xi.createNode(rsName.c_str(),rsText.c_str(),bIsDecl);
		if(h)
		{
			pResult = IXMLNode::TXMLNodePtr(new CXMLNodeMI(h,true));
		}

		return pResult;
	}
}

bool CXMLEngineMI::SaveFile(const tstring& rsFileName,const IXMLNode::TXMLNodePtr& pNode)const
{
	CXMLNodeMI* pXML = dynamic_cast<CXMLNodeMI*>(pNode.get());
	if(pXML)
	{
		tofstream file(rsFileName.c_str());
		if(file.good())
		{
			IXMLNode::TXMLNodePtr pRoot(create_node(_T("xml"),tstring(),true));
			if(pRoot)
			{
				pRoot->AddAttribute(_T("version"),_T("1.0"));
				pRoot->AddAttribute(_T("encoding"),_T("UTF-8"));
				file << *pRoot;
			}

			if(file.good())
			{
				file << *pNode;
			}
		}

		return file.good();
	}

	return false;
}

IXMLNode::TXMLNodePtr CXMLEngineMI::CreateNode(const tstring& rsName,const tstring& rsText)const
{
	return create_node(rsName,rsText,false);
}