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XML class for processing and building simple XML documents

, 23 Sep 2003
Link CMarkup into your VC++ app and avoid complex XML tools and dependencies
// Markup.h: interface for the CMarkup class.
//
// CMarkup Release 6.5 Lite
// Copyright (C) 1999-2003 First Objective Software, Inc. All rights reserved
// This entire notice must be retained in this source code
// Redistributing this source code requires written permission
// This software is provided "as is", with no warranty.
// Latest fixes enhancements and documentation at www.firstobject.com

#if !defined(AFX_MARKUP_H__948A2705_9E68_11D2_A0BF_00105A27C570__INCLUDED_)
#define AFX_MARKUP_H__948A2705_9E68_11D2_A0BF_00105A27C570__INCLUDED_

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

#include <afxtempl.h>

#ifdef _DEBUG
#define _DS(i) (i?&((LPCTSTR)m_csDoc)[m_aPos[i].nStartL]:0)
#define MARKUP_SETDEBUGSTATE m_pMainDS=_DS(m_iPos); m_pChildDS=_DS(m_iPosChild)
#else
#define MARKUP_SETDEBUGSTATE
#endif

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

	// Create
	CString GetDoc() const { return m_csDoc; };
	bool AddElem( LPCTSTR szName, LPCTSTR szData=NULL ) { return x_AddElem(szName,szData,false,false); };
	bool AddChildElem( LPCTSTR szName, LPCTSTR szData=NULL ) { return x_AddElem(szName,szData,false,true); };
	bool AddAttrib( LPCTSTR szAttrib, LPCTSTR szValue ) { return x_SetAttrib(m_iPos,szAttrib,szValue); };
	bool AddChildAttrib( LPCTSTR szAttrib, LPCTSTR szValue ) { return x_SetAttrib(m_iPosChild,szAttrib,szValue); };
	bool SetAttrib( LPCTSTR szAttrib, LPCTSTR szValue ) { return x_SetAttrib(m_iPos,szAttrib,szValue); };
	bool SetChildAttrib( LPCTSTR szAttrib, LPCTSTR szValue ) { return x_SetAttrib(m_iPosChild,szAttrib,szValue); };

	// Navigate
	bool SetDoc( LPCTSTR szDoc );
	bool IsWellFormed();
	bool FindElem( LPCTSTR szName=NULL );
	bool FindChildElem( LPCTSTR szName=NULL );
	bool IntoElem();
	bool OutOfElem();
	void ResetChildPos() { x_SetPos(m_iPosParent,m_iPos,0); };
	void ResetMainPos() { x_SetPos(m_iPosParent,0,0); };
	void ResetPos() { x_SetPos(0,0,0); };
	CString GetTagName() const;
	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); };
	CString GetError() const { return m_csError; };

	enum MarkupNodeType
	{
		MNT_ELEMENT					= 1,  // 0x01
		MNT_TEXT					= 2,  // 0x02
		MNT_WHITESPACE				= 4,  // 0x04
		MNT_CDATA_SECTION			= 8,  // 0x08
		MNT_PROCESSING_INSTRUCTION	= 16, // 0x10
		MNT_COMMENT					= 32, // 0x20
		MNT_DOCUMENT_TYPE			= 64, // 0x40
		MNT_EXCLUDE_WHITESPACE		= 123,// 0x7b
	};

protected:

#ifdef _DEBUG
	LPCTSTR m_pMainDS;
	LPCTSTR m_pChildDS;
#endif

	CString m_csDoc;
	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; nReserved=0;
			iElemParent=0; iElemChild=0; iElemNext=0;
		};
		void AdjustStart( int n ) { nStartL+=n; nStartR+=n; };
		void AdjustEnd( int n ) { nEndL+=n; nEndR+=n; };
		int nStartL;
		int nStartR;
		int nEndL;
		int nEndR;
		int nReserved;
		int iElemParent;
		int iElemChild;
		int iElemNext;
	};

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

	struct TokenPos
	{
		TokenPos( LPCTSTR sz ) { Clear(); szDoc = sz; };
		bool IsValid() const { return (nL <= nR); };
		void Clear() { nL=0; nR=-1; nNext=0; bIsString=false; };
		bool Match( LPCTSTR szName )
		{
			int nLen = nR - nL + 1;
			return ( (_tcsnccmp( &szDoc[nL], szName, nLen ) == 0)
				&& ( szName[nLen] == _T('\0') || _tcschr(_T(" =/["),szName[nLen]) ) );
		};
		int nL;
		int nR;
		int nNext;
		LPCTSTR szDoc;
		bool bIsString;
	};

	void x_SetPos( int iPosParent, int iPos, int iPosChild )
	{
		m_iPosParent = iPosParent;
		m_iPos = iPos;
		m_iPosChild = iPosChild;
		m_nNodeType = iPos?MNT_ELEMENT:0;
		MARKUP_SETDEBUGSTATE;
	};

	int x_GetFreePos();
	int x_ReleasePos();
	int x_ParseElem( int iPos );
	int x_ParseError( LPCTSTR szError, LPCTSTR szName = NULL );
	static bool x_FindChar( LPCTSTR szDoc, int& nChar, _TCHAR c );
	static bool x_FindAny( LPCTSTR szDoc, int& nChar );
	static bool x_FindToken( TokenPos& token );
	CString x_GetToken( const TokenPos& token ) const;
	int x_FindElem( int iPosParent, int iPos, LPCTSTR szPath );
	CString x_GetTagName( int iPos ) const;
	CString x_GetData( int iPos ) const;
	CString x_GetAttrib( int iPos, LPCTSTR szAttrib ) const;
	bool x_AddElem( LPCTSTR szName, LPCTSTR szValue, bool bInsert, bool bAddChild );
	bool x_FindAttrib( TokenPos& token, LPCTSTR szAttrib=NULL ) const;
	bool x_SetAttrib( int iPos, LPCTSTR szAttrib, LPCTSTR szValue );
	void x_LocateNew( int iPosParent, int& iPosRel, int& nOffset, int nLength, int nFlags );
	int x_ParseNode( TokenPos& token );
	void x_DocChange( int nLeft, int nReplace, const CString& csInsert );
	void x_Adjust( int iPos, int nShift, bool bAfterPos = false );
	CString x_TextToDoc( LPCTSTR szText, bool bAttrib = false ) const;
	CString x_TextFromDoc( int nLeft, int nRight ) const;
};

#endif // !defined(AFX_MARKUP_H__948A2705_9E68_11D2_A0BF_00105A27C570__INCLUDED_)

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About the Author

Ben Bryant

United States United States
Raised in Southern Ontario Canada. Bachelor of Science from the University of Toronto in Computer Science and Anthropology. Living near Washington D.C. in Virginia, USA.

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