core/ASCHTMLRenderer/Writer/TextItem.h

#pragma once
#include "../stdafx.h"

#ifndef AVSINLINE
#if defined(_MSC_VER)
#define AVSINLINE __forceinline
#else
#define AVSINLINE inline
#endif
#endif

namespace NSStrings
{
	class CTextItem
	{
	protected:
		wchar_t*	m_pData;
		size_t		m_lSize;

		wchar_t*	m_pDataCur;
		size_t		m_lSizeCur;

	public:
		CTextItem()
		{
			m_pData = NULL;
			m_lSize = 0;

			m_pDataCur	= m_pData;
			m_lSizeCur	= m_lSize;
		}
		CTextItem(const CTextItem& oSrc)
		{
			m_pData = NULL;
			*this = oSrc;
		}
		CTextItem& operator=(const CTextItem& oSrc)
		{
			RELEASEMEM(m_pData);

			m_lSize		= oSrc.m_lSize;
			m_lSizeCur	= oSrc.m_lSizeCur;
			m_pData		= (wchar_t*)malloc(m_lSize * sizeof(wchar_t));

			memcpy(m_pData, oSrc.m_pData, m_lSizeCur * sizeof(wchar_t));
							
			m_pDataCur = m_pData + m_lSizeCur;

			return *this;
		}

		CTextItem(const size_t& nLen)
		{
			m_lSize = nLen;
			m_pData = (wchar_t*)malloc(m_lSize * sizeof(wchar_t));
				
			m_lSizeCur = 0;
			m_pDataCur = m_pData;
		}
		CTextItem(wchar_t* pData, const size_t& nLen)
		{
			m_lSize = nLen;
			m_pData = (wchar_t*)malloc(m_lSize * sizeof(wchar_t));

			memcpy(m_pData, pData, m_lSize * sizeof(wchar_t));
				
			m_lSizeCur = m_lSize;
			m_pDataCur = m_pData + m_lSize;
		}
		CTextItem(wchar_t* pData, BYTE* pUnicodeChecker = NULL)
		{
			size_t nLen = GetStringLen(pData);

			m_lSize = nLen;
			m_pData = (wchar_t*)malloc(m_lSize * sizeof(wchar_t));

			memcpy(m_pData, pData, m_lSize * sizeof(wchar_t));
				
			m_lSizeCur = m_lSize;
			m_pDataCur = m_pData + m_lSize;

			if (NULL != pUnicodeChecker)
			{
				wchar_t* pMemory = m_pData;
				while (pMemory < m_pDataCur)
				{
					if (!pUnicodeChecker[*pMemory])
						*pMemory = wchar_t(' ');
					++pMemory;
				}
			}
		}
		virtual ~CTextItem()
		{
			RELEASEMEM(m_pData);
		}

		AVSINLINE void AddSize(const size_t& nSize)
		{
			if (NULL == m_pData)
			{
				m_lSize = max(nSize, 1000);				
				m_pData = (wchar_t*)malloc(m_lSize * sizeof(wchar_t));
				
				m_lSizeCur = 0;
				m_pDataCur = m_pData;
				return;
			}

			if ((m_lSizeCur + nSize) > m_lSize)
			{
				while ((m_lSizeCur + nSize) > m_lSize)
				{
					m_lSize *= 2;
				}

				wchar_t* pRealloc = (wchar_t*)realloc(m_pData, m_lSize * sizeof(wchar_t));
				if (NULL != pRealloc)
				{
					// <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
					m_pData		= pRealloc;
					m_pDataCur	= m_pData + m_lSizeCur;
				}
				else
				{
					wchar_t* pMalloc = (wchar_t*)malloc(m_lSize * sizeof(wchar_t));
					memcpy(pMalloc, m_pData, m_lSizeCur * sizeof(wchar_t));

					free(m_pData);
					m_pData		= pMalloc;
					m_pDataCur	= m_pData + m_lSizeCur;
				}
			}
		}

	public:
		
		AVSINLINE void operator+=(const CTextItem& oTemp)
		{
			WriteString(oTemp.m_pData, oTemp.m_lSizeCur);
		}
		AVSINLINE void operator+=(_bstr_t& oTemp)
		{
			size_t nLen = oTemp.length();
			WriteString(oTemp.GetBSTR(), nLen);
		}
		AVSINLINE void operator+=(CString& oTemp)
		{
			size_t nLen = (size_t)oTemp.GetLength();

			#ifdef _UNICODE
			WriteString(oTemp.GetBuffer(), nLen);
			#else
			CStringW str = (CStringW)oTemp;
			WriteString(str.GetBuffer(), nLen);
			#endif
		}
		AVSINLINE wchar_t operator[](const size_t& nIndex)
		{
			if (nIndex < m_lSizeCur)
				return m_pData[nIndex];

			return 0;
		}

		AVSINLINE void SetText(BSTR& bsText)
		{
			ClearNoAttack();
			size_t nLen = GetStringLen(bsText);

			WriteString(bsText, nLen);

			for (size_t i = 0; i < nLen; ++i)
			{
				if (WCHAR(8233) == m_pData[i])
					m_pData[i] = WCHAR(' ');
			}
		}
		AVSINLINE void AddSpace()
		{
			AddSize(1);
			*m_pDataCur = wchar_t(' ');

			++m_lSizeCur;
			++m_pDataCur;
		}
		AVSINLINE void CorrectUnicode(const BYTE* pUnicodeChecker)
		{
			if (NULL != pUnicodeChecker)
			{
				wchar_t* pMemory = m_pData;
				while (pMemory < m_pDataCur)
				{
					if (!pUnicodeChecker[*pMemory])
						*pMemory = wchar_t(' ');
					++pMemory;
				}
			}
		}
		AVSINLINE void RemoveLastSpaces()
		{
			wchar_t* pMemory = m_pDataCur - 1;
			while ((pMemory > m_pData) && (wchar_t(' ') == *pMemory))
			{
				--pMemory;
				--m_lSizeCur;
				--m_pDataCur;
			}

		}
		AVSINLINE bool IsSpace()
		{
			if (1 != m_lSizeCur)
				return false;
			return (wchar_t(' ') == *m_pData);
		}
		
	public:
		AVSINLINE void WriteString(wchar_t* pString, const size_t& nLen)
		{
			AddSize(nLen);
			//memcpy(m_pDataCur, pString, nLen * sizeof(wchar_t));
			memcpy(m_pDataCur, pString, nLen << 1);
			m_pDataCur += nLen;
			m_lSizeCur += nLen;
		}
		AVSINLINE size_t GetCurSize()
		{
			return m_lSizeCur;
		}
		AVSINLINE void SetCurSize(ULONG lCurSize)
		{
			m_lSizeCur = (size_t)lCurSize;
			m_pDataCur = m_pData + m_lSizeCur;
		}
		AVSINLINE size_t GetSize()
		{
			return m_lSize;
		}
		AVSINLINE void Clear()
		{
			RELEASEMEM(m_pData);
			
			m_pData = NULL;
			m_lSize = 0;

			m_pDataCur	= m_pData;
			m_lSizeCur	= 0;
		}
		AVSINLINE void ClearNoAttack()
		{
			m_pDataCur	= m_pData;
			m_lSizeCur	= 0;
		}

		AVSINLINE size_t GetStringLen(wchar_t* pData)
		{
			wchar_t* s = pData;
			for (; *s != 0; ++s);
			return (size_t)(s - pData);
		}

		AVSINLINE CString GetCString()
		{
			CString str(m_pData, (int)m_lSizeCur);
			return str;
		}
		AVSINLINE wchar_t* GetBuffer()
		{
			return m_pData;
		}

		AVSINLINE void AddCharNoCheck(const WCHAR& wc)
		{
			*m_pDataCur++ = wc;
			++m_lSizeCur;
		}
		AVSINLINE void AddIntNoCheck(int val)
		{
			if (0 == val)
			{
				*m_pDataCur++ = (WCHAR)'0';
				++m_lSizeCur;
				return;
			}
			if (val < 0)
			{
				val = -val;
				*m_pDataCur++ = (WCHAR)'-';
				++m_lSizeCur;
			}

			int len = 0;
			int oval = val;
			while (oval > 0)
			{
				oval /= 10;
				++len;
			}

			oval = 1;
			while (val > 0)
			{
				m_pDataCur[len - oval] = (WCHAR)('0' + (val % 10));
				++oval;
				val /= 10;
			}

			m_pDataCur += len;
			m_lSizeCur += len;
		}

		AVSINLINE void AddIntNoCheckDel10(int val)
		{
			if (0 == val)
			{
				*m_pDataCur++ = (WCHAR)'0';
				++m_lSizeCur;
				return;
			}
			if (val < 0)
			{
				val = -val;
				*m_pDataCur++ = (WCHAR)'-';
				++m_lSizeCur;
			}

			int len = 0;
			int oval = val;
			while (oval > 0)
			{
				oval /= 10;
				++len;
			}

			oval = 1;
			int nLastS = (val % 10);
			if (0 != nLastS)
			{
				++len;
				m_pDataCur[len - oval] = (WCHAR)('0' + nLastS);
				++oval;
				m_pDataCur[len - oval] = (WCHAR)('.');
				++oval;
				val /= 10;
			}
			else
			{
				--len;
				val /= 10;
			}

			while (val > 0)
			{
				m_pDataCur[len - oval] = (WCHAR)('0' + (val % 10));
				++oval;
				val /= 10;
			}

			m_pDataCur += len;
			m_lSizeCur += len;
		}

		AVSINLINE void AddStringNoCheck(const wchar_t* pData, const int& len)
		{
			memcpy(m_pDataCur, pData, len << 1);
			m_pDataCur += len;
			m_lSizeCur += len;
		}
		AVSINLINE void AddSpaceNoCheck()
		{
			*m_pDataCur = WCHAR(' ');
			++m_pDataCur;
			++m_lSizeCur;
		}
	};
}