XML读写类，CMarkup

//******************** 头文件  Markup.h  *******************
// Markup.h: interface for the CMarkup class.
//
// Markup Release 11.2
// Copyright (C) 2009 First Objective Software, Inc. All rights reserved
// Go to www.firstobject.com for the latest CMarkup and EDOM documentation
// Use in commercial applications requires written permission
// This software is provided "as is", with no warranty.
#if !defined(_MARKUP_H_INCLUDED_)
#define _MARKUP_H_INCLUDED_
#include <stdlib.h>
#include <string.h> // memcpy, memset, strcmp...
// Major build options
// MARKUP_WCHAR wide char (2-byte UTF-16 on Windows, 4-byte UTF-32 on Linux and OS X)
// MARKUP_MBCS ANSI/double-byte strings on Windows
// MARKUP_STL (default except VC++) use STL strings instead of MFC strings
// MARKUP_SAFESTR to use string _s functions in VC++ 2005 (_MSC_VER >= 1400)
// MARKUP_WINCONV (default for VC++) for Windows API character conversion
// MARKUP_ICONV (default for GNU) for character conversion on Linux and OS X and other platforms
// MARKUP_STDCONV to use neither WINCONV or ICONV, falls back to setlocale based conversion for ANSI
//
#if _MSC_VER > 1000 // VC++
#pragma once
#if ! defined(MARKUP_SAFESTR) // not VC++ safe strings
#pragma warning(disable:4996) // VC++ 2005 deprecated function warnings
#endif // not VC++ safe strings
#if defined(MARKUP_STL) && _MSC_VER < 1400 // STL pre VC++ 2005
#pragma warning(disable:4786) // std::string long names
#endif // VC++ 2005 STL
#else // not VC++
#if ! defined(MARKUP_STL)
#define MARKUP_STL
#endif // not STL
#if defined(__GNUC__) && ! defined(MARKUP_ICONV) && ! defined(MARKUP_STDCONV) && ! defined(MARKUP_WINCONV)
#define MARKUP_ICONV
#endif // GNUC and not ICONV not STDCONV not WINCONV
#endif // not VC++
#if (defined(_UNICODE) || defined(UNICODE)) && ! defined(MARKUP_WCHAR)
#define MARKUP_WCHAR
#endif // _UNICODE or UNICODE
#if (defined(_MBCS) || de