hzxml.h

本次作业采用MFC多文档——视图结构体系（已征得肖老师的同意）。开发环境为VC++ 6.0 SP6

// HzXML.h: interface for the CHzXML class.
//
// XML文档存取类库与编辑器－数据结构大作业
// 华南理工大学－计算机03(1)班－肖天华 
// 200345003136   65#
// http://xth.blogone.net
// QQ：4023727 萧萧

#if !defined(AFX_HzXML_H__8BCE0CE5_A351_43D8_A0BF_46473A672550__INCLUDED_)
#define AFX_HzXML_H__8BCE0CE5_A351_43D8_A0BF_46473A672550__INCLUDED_

#if _MSC_VER > 1000
#pragma once
#endif // _MSC_VER > 1000

#include <afxtempl.h>

class CHzXML  
{
public:
	CHzXML() { SetDoc( NULL ); };
	CHzXML( LPCTSTR szDoc ) { SetDoc( szDoc ); };
	CHzXML( const CHzXML& HzXML ) { *this = HzXML; };
	void operator=( const CHzXML& HzXML );
	virtual ~CHzXML() {};

	// Navigate
	bool SetDoc( LPCTSTR szDoc );
	bool IsWellFormed();
	bool FindElem( LPCTSTR szName=NULL );
	bool FindChildElem( LPCTSTR szName=NULL );
	bool IntoElem();
	bool OutOfElem();
	void ResetChildPos() { m_iPosChild = 0; };
	void ResetPos();
	CString GetTagName() const { return x_GetTagName(m_iPos); };
	CString GetChildTagName() const { return x_GetTagName(m_iPosChild); };
	CString GetData() const { return x_GetData(m_iPos); };
	CString GetChildData() const { return x_GetData(m_iPosChild); };
	CString GetAttrib( LPCTSTR szAttrib ) const { return x_GetAttrib(m_iPos,szAttrib); };
	CString GetChildAttrib( LPCTSTR szAttrib ) const { return x_GetAttrib(m_iPosChild,szAttrib); };
	bool GetOffsets( int& nStart, int& nEnd ) const;
	CString GetError() const { return m_csError; };

	// Create
	CString GetDoc() const { return m_csDoc; };
	bool AddElem( LPCTSTR szName, LPCTSTR szData=NULL );
	bool AddChildElem( LPCTSTR szName, LPCTSTR szData=NULL );
	bool AddAttrib( LPCTSTR szAttrib, LPCTSTR szValue );
	bool AddChildAttrib( LPCTSTR szAttrib, LPCTSTR szValue );

protected:
	CString m_csDoc;
	int m_nLevel;
	CString m_csError;

	struct ElemPos
	{
		ElemPos() { Clear(); };
		ElemPos( const ElemPos& pos ) { *this = pos; };
		bool IsEmptyElement() const { return (nStartR == nEndL + 1); };
		void Clear()
		{
			nStartL=0; nStartR=0; nEndL=0; nEndR=0; nNext=0;
			iElemParent=0; iElemChild=0; iElemNext=0;
		};
		int nStartL;
		int nStartR;
		int nEndL;
		int nEndR;
		int nNext;
		int iElemParent;
		int iElemChild;
		int iElemNext;
	};

	CArray< ElemPos, ElemPos& > m_aPos;
	int m_iPos;
	int m_iPosChild;
	int m_iPosFree;

	int x_GetFreePos();
	int x_ReleasePos();

	struct TokenPos
	{
		TokenPos() { Clear(); };
		bool IsValid() const { return (nL <= nR); };
		void Clear() { nL=0; nR=-1; bIsString=false; };
		int nL;
		int nR;
		int nNext;
		bool bIsString;
	};

	int x_ParseElem( int iPos );
	int x_ParseError( LPCTSTR szError, LPCTSTR szTag = NULL );
	bool x_FindChar( int&n, _TCHAR c ) const;
	bool x_FindToken( TokenPos& token ) const;
	CString x_GetToken( const TokenPos& token ) const;
	CString x_GetTagName( int iPos ) const;
	CString x_GetData( int iPos ) const;
	CString x_GetAttrib( int iPos, LPCTSTR szAttrib ) const;
	int x_Add( int iPosParent, int iPosBefore, LPCTSTR szName, LPCTSTR szValue );
	bool x_FindAttrib( TokenPos& token, LPCTSTR szAttrib=NULL ) const;
	int x_AddAttrib( int iPos, LPCTSTR szAttrib, LPCTSTR szValue );
	int x_SetAttrib( int iPos, LPCTSTR szAttrib, LPCTSTR szValue );
	bool x_SetData( int iPos, LPCTSTR szData, int nCDATA );
	void x_DocChange( int nLeft, int nReplace, const CString& csInsert );
	void x_PosInsert( int iPos, int nInsertLength );
	void x_Adjust( int iPos, int nShift );
	CString x_TextToDoc( LPCTSTR szText, bool bAttrib = false ) const;
	CString x_TextFromDoc( int nLeft, int nRight ) const;
};

#endif // !defined(AFX_HzXML_H__8BCE0CE5_A351_43D8_A0BF_46473A672550__INCLUDED_)