C++ CFX_WideString::GetBuffer方法代码示例

void CFDE_TxtEdtBuf::GetRange(CFX_WideString& wsText,
                              int32_t nBegin,
                              int32_t nLength) const {
  FDE_CHUNKPLACE cp;
  Index2CP(nBegin, cp);
  int32_t nLeave = nLength;
  int32_t nCount = m_Chunks.GetSize();
  FX_WCHAR* lpDstBuf = wsText.GetBuffer(nLength);
  int32_t nChunkIndex = cp.nChunkIndex;
  FDE_CHUNKHEADER* lpChunkHeader = m_Chunks[nChunkIndex];
  int32_t nCopyLength = lpChunkHeader->nUsed - cp.nCharIndex;
  FX_WCHAR* lpSrcBuf = lpChunkHeader->wChars + cp.nCharIndex;
  while (nLeave > 0) {
    if (nLeave <= nCopyLength) {
      nCopyLength = nLeave;
    }
    FXSYS_memcpy(lpDstBuf, lpSrcBuf, nCopyLength * sizeof(FX_WCHAR));
    nChunkIndex++;
    if (nChunkIndex >= nCount) {
      break;
    }
    lpChunkHeader = m_Chunks[nChunkIndex];
    lpSrcBuf = lpChunkHeader->wChars;
    nLeave -= nCopyLength;
    lpDstBuf += nCopyLength;
    nCopyLength = lpChunkHeader->nUsed;
  }
  wsText.ReleaseBuffer();
}

CFX_WideString Document::CutString(CFX_WideString cbFrom)
{
	size_t iLength = cbFrom.GetLength();
	pdfium::base::CheckedNumeric<size_t> iSize = sizeof(wchar_t);
	iSize *= (iLength + 1);
	wchar_t* pResult = (wchar_t*)malloc(iSize.ValueOrDie());
	wchar_t* pFrom = (wchar_t*)cbFrom.GetBuffer(iLength);

	for (int i = 0; i < iLength; i++)
	{
		if (pFrom[i] == L'\\' || pFrom[i] == L'/')
		{
			pResult[i] = L'\0';
			break;
		}
		pResult[i] = pFrom[i];
	}
	pResult[iLength] = L'\0';

	cbFrom.ReleaseBuffer();
	CFX_WideString cbRet = CFX_WideString(pResult);
	free(pResult);
	pResult = NULL;
	return cbRet;
}

FX_BOOL CPDF_TextPageFind::ExtractSubString(CFX_WideString& rString,
                                            const FX_WCHAR* lpszFullString,
                                            int iSubString,
                                            FX_WCHAR chSep) {
  if (!lpszFullString)
    return FALSE;
  while (iSubString--) {
    lpszFullString = std::wcschr(lpszFullString, chSep);
    if (!lpszFullString) {
      rString.clear();
      return FALSE;
    }
    lpszFullString++;
    while (*lpszFullString == chSep)
      lpszFullString++;
  }
  const FX_WCHAR* lpchEnd = std::wcschr(lpszFullString, chSep);
  int nLen = lpchEnd ? (int)(lpchEnd - lpszFullString)
                     : (int)FXSYS_wcslen(lpszFullString);
  ASSERT(nLen >= 0);
  FXSYS_memcpy(rString.GetBuffer(nLen), lpszFullString,
               nLen * sizeof(FX_WCHAR));
  rString.ReleaseBuffer();
  return TRUE;
}

int32_t CFDE_TxtEdtTextSet::GetString(FDE_TEXTEDITPIECE* pPiece,
                                      CFX_WideString& wsText) {
  FX_WCHAR* pBuffer = wsText.GetBuffer(pPiece->nCount);
  for (int32_t i = 0; i < pPiece->nCount; i++) {
    pBuffer[i] = m_pPage->GetChar(pPiece, i);
  }
  wsText.ReleaseBuffer(pPiece->nCount);
  return pPiece->nCount;
}

FX_STRSIZE FX_WideString_GetNormalization(const CFX_WideStringC& wsSrc,
                                          CFX_WideString& wsDst) {
  FX_STRSIZE nLen = FX_WideString_GetNormalization(wsSrc, (FX_WCHAR*)NULL);
  if (!nLen) {
    return 0;
  }
  FX_WCHAR* pBuf = wsDst.GetBuffer(nLen);
  FX_WideString_GetNormalization(wsSrc, pBuf);
  wsDst.ReleaseBuffer(nLen);
  return nLen;
}

CFX_WideString CFX_WideString::FromUTF16LE(const unsigned short* wstr, FX_STRSIZE wlen)
{
    if (!wstr || 0 == wlen) {
        return CFX_WideString();
    }

    CFX_WideString result;
    FX_WCHAR* buf = result.GetBuffer(wlen);
    for (int i = 0; i < wlen; i ++) {
        buf[i] = wstr[i];
    }
    result.ReleaseBuffer(wlen);
    return result;
}

void CFDE_TxtEdtEngine::SetText(const CFX_WideString& wsText) {
  ResetEngine();
  int32_t nLength = wsText.GetLength();
  if (nLength > 0) {
    CFX_WideString wsTemp;
    FX_WCHAR* lpBuffer = wsTemp.GetBuffer(nLength);
    FXSYS_memcpy(lpBuffer, wsText.c_str(), nLength * sizeof(FX_WCHAR));
    ReplaceParagEnd(lpBuffer, nLength, FALSE);
    wsTemp.ReleaseBuffer(nLength);
    if (m_nLimit > 0 && nLength > m_nLimit) {
      wsTemp.Delete(m_nLimit, nLength - m_nLimit);
      nLength = m_nLimit;
    }
    m_pTxtBuf->SetText(wsTemp);
  }
  m_pTxtBuf->Insert(nLength, &m_wLineEnd, 1);
  RebuildParagraphs();
}

void CFDE_TxtEdtEngine::RecoverParagEnd(CFX_WideString& wsText) {
  FX_WCHAR wc = (m_nFirstLineEnd == FDE_TXTEDIT_LINEEND_CR) ? L'\n' : L'\r';
  if (m_nFirstLineEnd == FDE_TXTEDIT_LINEEND_CRLF) {
    CFX_ArrayTemplate<int32_t> PosArr;
    int32_t nLength = wsText.GetLength();
    int32_t i = 0;
    FX_WCHAR* lpPos = const_cast<FX_WCHAR*>(wsText.c_str());
    for (i = 0; i < nLength; i++, lpPos++) {
      if (*lpPos == m_wLineEnd) {
        *lpPos = wc;
        PosArr.Add(i);
      }
    }
    const FX_WCHAR* lpSrcBuf = wsText.c_str();
    CFX_WideString wsTemp;
    int32_t nCount = PosArr.GetSize();
    FX_WCHAR* lpDstBuf = wsTemp.GetBuffer(nLength + nCount);
    int32_t nDstPos = 0;
    int32_t nSrcPos = 0;
    for (i = 0; i < nCount; i++) {
      int32_t nPos = PosArr[i];
      int32_t nCopyLen = nPos - nSrcPos + 1;
      FXSYS_memcpy(lpDstBuf + nDstPos, lpSrcBuf + nSrcPos,
                   nCopyLen * sizeof(FX_WCHAR));
      nDstPos += nCopyLen;
      nSrcPos += nCopyLen;
      lpDstBuf[nDstPos] = L'\n';
      nDstPos++;
    }
    if (nSrcPos < nLength) {
      FXSYS_memcpy(lpDstBuf + nDstPos, lpSrcBuf + nSrcPos,
                   (nLength - nSrcPos) * sizeof(FX_WCHAR));
    }
    wsTemp.ReleaseBuffer(nLength + nCount);
    wsText = wsTemp;
  } else {
    int32_t nLength = wsText.GetLength();
    FX_WCHAR* lpBuf = const_cast<FX_WCHAR*>(wsText.c_str());
    for (int32_t i = 0; i < nLength; i++, lpBuf++) {
      if (*lpBuf == m_wLineEnd)
        *lpBuf = wc;
    }
  }
}

CFX_WideString Document::ReversalStr(CFX_WideString cbFrom)
{
	size_t iLength = cbFrom.GetLength();
        pdfium::base::CheckedNumeric<size_t> iSize = sizeof(wchar_t);
	iSize *= (iLength + 1);
	wchar_t* pResult = (wchar_t*)malloc(iSize.ValueOrDie());
	wchar_t* pFrom = (wchar_t*)cbFrom.GetBuffer(iLength);

	for (size_t i = 0; i < iLength; i++)
	{
		pResult[i] = *(pFrom + iLength - i - 1);
	}
	pResult[iLength] = L'\0';

	cbFrom.ReleaseBuffer();
	CFX_WideString cbRet = CFX_WideString(pResult);
	free(pResult);
	pResult = NULL;
	return cbRet;
}

FX_BOOL Document::documentFileName(IFXJS_Context* cc, CJS_PropValue& vp, CFX_WideString& sError)
{
	if (vp.IsSetting()) {
		CJS_Context* pContext = static_cast<CJS_Context*>(cc);
		sError = JSGetStringFromID(pContext, IDS_STRING_JSREADONLY);
		return FALSE;
	}
	CFX_WideString wsFilePath = m_pDocument->GetPath();
	FX_INT32 i = wsFilePath.GetLength() - 1;
	for ( ; i >= 0; i-- )
	{
		if ( wsFilePath.GetAt( i ) == L'\\' || wsFilePath.GetAt( i ) == L'/' )
			break;
	}
	if ( i >= 0 && i < wsFilePath.GetLength() - 1 )
	{
		vp << ( wsFilePath.GetBuffer( wsFilePath.GetLength() ) + i + 1 );
	}else{
		vp << L"";
	}
	return TRUE;
}

static int32_t XFA_FilterName(const CFX_WideStringC& wsExpression,
                              int32_t nStart,
                              CFX_WideString& wsFilter) {
    FXSYS_assert(nStart > -1);
    int32_t iLength = wsExpression.GetLength();
    if (nStart >= iLength) {
        return iLength;
    }
    FX_WCHAR* pBuf = wsFilter.GetBuffer(iLength - nStart);
    int32_t nCount = 0;
    const FX_WCHAR* pSrc = wsExpression.GetPtr();
    FX_WCHAR wCur;
    while (nStart < iLength) {
        wCur = pSrc[nStart++];
        if (wCur == ',') {
            break;
        }
        pBuf[nCount++] = wCur;
    }
    wsFilter.ReleaseBuffer(nCount);
    wsFilter.TrimLeft();
    wsFilter.TrimRight();
    return nStart;
}

void CXFA_LocaleValue::GetNumbericFormat(CFX_WideString& wsFormat,
                                         int32_t nIntLen,
                                         int32_t nDecLen,
                                         FX_BOOL bSign) {
  ASSERT(wsFormat.IsEmpty());
  ASSERT(nIntLen >= -1 && nDecLen >= -1);
  int32_t nTotalLen = (nIntLen >= 0 ? nIntLen : 2) + (bSign ? 1 : 0) +
                      (nDecLen >= 0 ? nDecLen : 2) + (nDecLen == 0 ? 0 : 1);
  FX_WCHAR* lpBuf = wsFormat.GetBuffer(nTotalLen);
  int32_t nPos = 0;
  if (bSign) {
    lpBuf[nPos++] = L's';
  }
  if (nIntLen == -1) {
    lpBuf[nPos++] = L'z';
    lpBuf[nPos++] = L'*';
  } else {
    while (nIntLen) {
      lpBuf[nPos++] = L'z';
      nIntLen--;
    }
  }
  if (nDecLen != 0) {
    lpBuf[nPos++] = L'.';
  }
  if (nDecLen == -1) {
    lpBuf[nPos++] = L'z';
    lpBuf[nPos++] = L'*';
  } else {
    while (nDecLen) {
      lpBuf[nPos++] = L'z';
      nDecLen--;
    }
  }
  wsFormat.ReleaseBuffer(nTotalLen);
}

void CFDE_TxtEdtEngine::GetPreInsertText(CFX_WideString& wsText,
                                         int32_t nIndex,
                                         const FX_WCHAR* lpText,
                                         int32_t nLength) {
  GetText(wsText, 0, GetTextBufLength());
  int32_t nSelIndex = 0;
  int32_t nSelLength = 0;
  int32_t nSelCount = CountSelRanges();
  while (nSelCount--) {
    nSelLength = GetSelRange(nSelCount, nSelIndex);
    wsText.Delete(nSelIndex, nSelLength);
    nIndex = nSelIndex;
  }
  CFX_WideString wsTemp;
  int32_t nOldLength = wsText.GetLength();
  const FX_WCHAR* pOldBuffer = wsText.c_str();
  FX_WCHAR* lpBuffer = wsTemp.GetBuffer(nOldLength + nLength);
  FXSYS_memcpy(lpBuffer, pOldBuffer, (nIndex) * sizeof(FX_WCHAR));
  FXSYS_memcpy(lpBuffer + nIndex, lpText, nLength * sizeof(FX_WCHAR));
  FXSYS_memcpy(lpBuffer + nIndex + nLength, pOldBuffer + nIndex,
               (nOldLength - nIndex) * sizeof(FX_WCHAR));
  wsTemp.ReleaseBuffer(nOldLength + nLength);
  wsText = wsTemp;
}

FX_BOOL util::printf(OBJ_METHOD_PARAMS)
{
	int iSize = params.size();
	if (iSize < 1)
		return FALSE;
	std::wstring  c_ConvChar((const wchar_t*)(FX_LPCWSTR)params[0].operator CFX_WideString());
	std::vector<std::wstring> c_strConvers;
	int iOffset = 0;
	int iOffend = 0;
	c_ConvChar.insert(c_ConvChar.begin(),L'S');
	while(iOffset != -1)
	{
		iOffend = c_ConvChar.find(L"%",iOffset+1);
		std::wstring strSub;
		if (iOffend == -1)
			strSub = c_ConvChar.substr(iOffset);			
		else
			strSub = c_ConvChar.substr(iOffset ,iOffend - iOffset);
		c_strConvers.push_back(strSub);
		iOffset = iOffend ;
	}

	std::wstring c_strResult;

	//for(int iIndex = 1;iIndex < params.size();iIndex++)
	std::wstring c_strFormat;
	for(int iIndex = 0;iIndex < (int)c_strConvers.size();iIndex++)
	{
		c_strFormat = c_strConvers[iIndex];
		if (iIndex == 0)
		{
			c_strResult = c_strFormat;
			continue;
		}


		CFX_WideString strSegment;
		if (iIndex >= iSize) {
			c_strResult += c_strFormat;
			continue;
		}

		switch (ParstDataType(&c_strFormat))
		{
			case UTIL_INT:
				strSegment.Format((FX_LPCWSTR)c_strFormat.c_str(),(int)params[iIndex]);
				break;
			case UTIL_DOUBLE:
				strSegment.Format((FX_LPCWSTR)c_strFormat.c_str(),(double)params[iIndex]);
				break;
			case UTIL_STRING:
				strSegment.Format((FX_LPCWSTR)c_strFormat.c_str(),(FX_LPCWSTR)params[iIndex].operator CFX_WideString());
				break;
			default:
				strSegment.Format((FX_LPCWSTR)L"%S", (FX_LPCWSTR)c_strFormat.c_str());
				break;
		}
		c_strResult += (wchar_t*)strSegment.GetBuffer(strSegment.GetLength()+1);
	}

	c_strResult.erase(c_strResult.begin());
	vRet = (FX_LPCWSTR)c_strResult.c_str();
	return TRUE;
}

FX_BOOL util::printf(IFXJS_Context* cc, const CJS_Parameters& params, CJS_Value& vRet, CFX_WideString& sError)
{
	int iSize = params.size();
	if (iSize < 1)
		return FALSE;
	std::wstring c_ConvChar(params[0].ToCFXWideString().c_str());
	std::vector<std::wstring> c_strConvers;
	int iOffset = 0;
	int iOffend = 0;
	c_ConvChar.insert(c_ConvChar.begin(),L'S');
	while(iOffset != -1)
	{
		iOffend = c_ConvChar.find(L"%",iOffset+1);
		std::wstring strSub;
		if (iOffend == -1)
			strSub = c_ConvChar.substr(iOffset);
		else
			strSub = c_ConvChar.substr(iOffset ,iOffend - iOffset);
		c_strConvers.push_back(strSub);
		iOffset = iOffend ;
	}

	std::wstring c_strResult;

	//for(int iIndex = 1;iIndex < params.size();iIndex++)
	std::wstring c_strFormat;
	for(int iIndex = 0;iIndex < (int)c_strConvers.size();iIndex++)
	{
		c_strFormat = c_strConvers[iIndex];
		if (iIndex == 0)
		{
			c_strResult = c_strFormat;
			continue;
		}


		CFX_WideString strSegment;
		if (iIndex >= iSize) {
			c_strResult += c_strFormat;
			continue;
		}

		switch (ParstDataType(&c_strFormat))
		{
			case UTIL_INT:
				strSegment.Format(c_strFormat.c_str(), params[iIndex].ToInt());
				break;
			case UTIL_DOUBLE:
				strSegment.Format(c_strFormat.c_str(), params[iIndex].ToDouble());
				break;
			case UTIL_STRING:
				strSegment.Format(c_strFormat.c_str(), params[iIndex].ToCFXWideString().c_str());
				break;
			default:
				strSegment.Format(L"%S", c_strFormat.c_str());
				break;
		}
		c_strResult += strSegment.GetBuffer(strSegment.GetLength()+1);
	}

	c_strResult.erase(c_strResult.begin());
	vRet = c_strResult.c_str();
	return TRUE;
}