C++ CFX_WideString::ReleaseBuffer方法代码示例

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;
}

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();
}

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 CPDF_Bookmark::GetTitle()
{
    if (!m_pDict) {
        return CFX_WideString();
    }
    CPDF_String* pString = (CPDF_String*)m_pDict->GetElementValue("Title");
    if (pString == NULL || pString->GetType() != PDFOBJ_STRING) {
        return CFX_WideString();
    }
    CFX_WideString title = pString->GetUnicodeText();
    FX_LPWSTR buf = title.LockBuffer();
    int len = title.GetLength(), i;
    for (i = 0; i < len; i ++)
        if (buf[i] < 0x20) {
            buf[i] = 0x20;
        }
    title.ReleaseBuffer(len);
    return title;
}

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;
}

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 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;
}

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);
}

int32_t CFDE_TxtEdtEngine::Insert(int32_t nStart,
                                  const FX_WCHAR* lpText,
                                  int32_t nLength) {
  if (IsLocked()) {
    return FDE_TXTEDT_MODIFY_RET_F_Locked;
  }
  CFX_WideString wsTemp;
  FX_WCHAR* lpBuffer = wsTemp.GetBuffer(nLength);
  FXSYS_memcpy(lpBuffer, lpText, nLength * sizeof(FX_WCHAR));
  ReplaceParagEnd(lpBuffer, nLength, FALSE);
  wsTemp.ReleaseBuffer(nLength);
  FX_BOOL bPart = FALSE;
  if (m_nLimit > 0) {
    int32_t nTotalLength = GetTextBufLength();
    int32_t nCount = m_SelRangePtrArr.GetSize();
    for (int32_t i = 0; i < nCount; i++) {
      FDE_TXTEDTSELRANGE* lpSelRange = m_SelRangePtrArr.GetAt(i);
      nTotalLength -= lpSelRange->nCount;
    }
    int32_t nExpectLength = nTotalLength + nLength;
    if (nTotalLength == m_nLimit) {
      return FDE_TXTEDT_MODIFY_RET_F_Full;
    }
    if (nExpectLength > m_nLimit) {
      nLength -= (nExpectLength - m_nLimit);
      bPart = TRUE;
    }
  }
  if ((m_Param.dwMode & FDE_TEXTEDITMODE_LimitArea_Vert) ||
      (m_Param.dwMode & FDE_TEXTEDITMODE_LimitArea_Horz)) {
    int32_t nTemp = nLength;
    if (m_Param.dwMode & FDE_TEXTEDITMODE_Password) {
      CFX_WideString wsText;
      while (nLength > 0) {
        GetPreInsertText(wsText, m_nCaret, lpBuffer, nLength);
        int32_t nTotal = wsText.GetLength();
        FX_WCHAR* lpBuf = wsText.GetBuffer(nTotal);
        for (int32_t i = 0; i < nTotal; i++) {
          lpBuf[i] = m_wcAliasChar;
        }
        wsText.ReleaseBuffer(nTotal);
        if (IsFitArea(wsText)) {
          break;
        }
        nLength--;
      }
    } else {
      CFX_WideString wsText;
      while (nLength > 0) {
        GetPreInsertText(wsText, m_nCaret, lpBuffer, nLength);
        if (IsFitArea(wsText)) {
          break;
        }
        nLength--;
      }
    }
    if (nLength == 0) {
      return FDE_TXTEDT_MODIFY_RET_F_Full;
    }
    if (nLength < nTemp) {
      bPart = TRUE;
    }
  }
  if (m_Param.dwMode & FDE_TEXTEDITMODE_Validate) {
    CFX_WideString wsText;
    GetPreInsertText(wsText, m_nCaret, lpBuffer, nLength);
    if (!m_Param.pEventSink->On_Validate(this, wsText)) {
      return FDE_TXTEDT_MODIFY_RET_F_Invalidate;
    }
  }
  if (IsSelect()) {
    DeleteSelect();
  }
  if (!(m_Param.dwMode & FDE_TEXTEDITMODE_NoRedoUndo))
    m_Param.pEventSink->On_AddDoRecord(
        this,
        new CFDE_TxtEdtDoRecord_Insert(this, m_nCaret, lpBuffer, nLength));

  GetText(m_ChangeInfo.wsPrevText, 0);
  Inner_Insert(m_nCaret, lpBuffer, nLength);
  m_ChangeInfo.nChangeType = FDE_TXTEDT_TEXTCHANGE_TYPE_Insert;
  m_ChangeInfo.wsInsert = CFX_WideString(lpBuffer, nLength);
  nStart = m_nCaret;
  nStart += nLength;
  FX_WCHAR wChar = m_pTxtBuf->GetCharByIndex(nStart - 1);
  FX_BOOL bBefore = TRUE;
  if (wChar != L'\n' && wChar != L'\r') {
    nStart--;
    bBefore = FALSE;
  }
  SetCaretPos(nStart, bBefore);
  m_Param.pEventSink->On_TextChanged(this, m_ChangeInfo);
  return bPart ? FDE_TXTEDT_MODIFY_RET_S_Part : FDE_TXTEDT_MODIFY_RET_S_Normal;
}