C++ AppendString函數代碼示例

//
// The TRIM function requires special processing.
void FdoRdbmsMySqlFilterProcessor::ProcessTrimFunction( FdoFunction& expr)
{
    // Append the function name and the opening bracket.
    ProcessFunctionName(expr);
	AppendString( "( " );

    // Process the arguments. This is were the special processing is required.
    // If the call includes an operator (BOTH, LEADING, TRAILING), it is required
    // to add a FROM clause after the operation keyword.
    FdoPtr<FdoExpressionCollection> exprCol = expr.GetArguments();
    for ( int i=0; i<exprCol->GetCount(); i++ )
    {
        FdoPtr<FdoExpression>exp = exprCol->GetItem( i );
        if ( (i == 0) && (IsDataValue( exp )) )
        {
            FdoDataValue *dataValue = (static_cast<FdoDataValue *>(exp.p) );
            if ( dataValue->GetDataType() == FdoDataType_String )
            {
                FdoStringValue *stringValue = static_cast<FdoStringValue *>(dataValue);
                AppendString( stringValue->GetString() );
                AppendString( " FROM " );	

            }
            else
                throw FdoFilterException::Create(NlsMsgGet(FDORDBMS_29, "Unsupported FDO type in expression"));
        }
        else
            HandleExpr( exp );
	}
    AppendString( " )" );
}

void CDialogTemplate::AddComponent(LPCSTR type, LPCSTR caption, DWORD style, DWORD exStyle,
								   int x, int y, int w, int h, WORD id)
{
	DLGITEMTEMPLATE item;

	item.style = style;
	item.x     = x;
	item.y     = y;
	item.cx    = w;
	item.cy    = h;
	item.id    = id;

	item.dwExtendedStyle = exStyle;

	AppendData(&item, sizeof(DLGITEMTEMPLATE));

	AppendString(type);
	AppendString(caption);

	WORD creationDataLength = 0;
	AppendData(&creationDataLength, sizeof(WORD));

	// Increment the component count
	dialogTemplate->cdit++;
}

	static HRESULT SetString(char *dest, REFPROPVARIANT propvar)
	{
		int offset = 0;
		switch (propvar.vt) {
		case VT_EMPTY:
			dest[0] = '\0';
			return S_OK;
		case VT_UI4:
			return sprintf(dest, "%lu", propvar.ulVal) == 4 ? S_OK : E_FAIL;
		case VT_LPWSTR:
			return AppendString(dest, &offset, propvar.pwszVal);
		case VT_VECTOR | VT_LPWSTR:
			ULONG i;
			dest[0] = '\0';
			for (i = 0; i < propvar.calpwstr.cElems; i++) {
				HRESULT hr;
				if (i > 0) {
					hr = AppendString(dest, &offset, L" & ");
					if (FAILED(hr))
						return hr;
				}
				hr = AppendString(dest, &offset, propvar.calpwstr.pElems[i]);
				if (FAILED(hr))
					return hr;
			}
			return S_OK;
		default:
			return E_NOTIMPL;
		}
	}

    DialogTemplate(LPCSTR caption, DWORD style,
                 int x, int y, int w, int h,
                 LPCSTR font = NULL, WORD fontSize = 8) {
      usedBufferLength = sizeof(DLGTEMPLATE);
      totalBufferLength = usedBufferLength;

      dialogTemplate = (DLGTEMPLATE*)malloc(totalBufferLength);

      dialogTemplate->style = style;

      if(font != NULL) {
        dialogTemplate->style |= DS_SETFONT;
      }

      dialogTemplate->x     = (short)x;
      dialogTemplate->y     = (short)y;
      dialogTemplate->cx    = (short)w;
      dialogTemplate->cy    = (short)h;
      dialogTemplate->cdit  = 0;

      dialogTemplate->dwExtendedStyle = 0;

      // The dialog box doesn't have a menu or a special class
      AppendData("\0", 2);
      AppendData("\0", 2);

      // Add the dialog's caption to the template

      AppendString(caption);

      if(font != NULL) {
          AppendData(&fontSize, sizeof(WORD));
          AppendString(font);
      }
    }

char*
StringMoveHistory(MemorySlice *history, bool abbrev)
{
  Move move;
  Memory *curr;
  Side side = White;
  StringBuilder builder = NewStringBuilder();
  int fullMoveCount = 1;

  for(curr = history->Vals; curr != history->Curr; curr++) {
    move = curr->Move;

    if(abbrev) {
      AppendString(&builder, "%s ", StringMove(move));
    } else {
      switch(side) {
      case White:
        AppendString(&builder, "%d. %s",
                     fullMoveCount, StringMove(move));
        break;
      case Black:
        AppendString(&builder, " %s\n",
                     StringMove(move));

        fullMoveCount++;

        break;
      }
    }

    side = OPPOSITE(side);
  }

  return builder.Length == 0 ? NULL : BuildString(&builder, true);
}

JSBool
Library::Name(JSContext* cx, uintN argc, jsval *vp)
{
  if (argc != 1) {
    JS_ReportError(cx, "libraryName takes one argument");
    return JS_FALSE;
  }

  jsval arg = JS_ARGV(cx, vp)[0];
  JSString* str = NULL;
  if (JSVAL_IS_STRING(arg)) {
    str = JSVAL_TO_STRING(arg);
  }
  else {
    JS_ReportError(cx, "name argument must be a string");
      return JS_FALSE;
  }

  AutoString resultString;
  AppendString(resultString, DLL_PREFIX);
  AppendString(resultString, str);
  AppendString(resultString, DLL_SUFFIX);

  JSString *result = JS_NewUCStringCopyN(cx, resultString.begin(),
                                         resultString.length());
  if (!result)
    return JS_FALSE;

  JS_SET_RVAL(cx, vp, STRING_TO_JSVAL(result));
  return JS_TRUE;
}

bool TessHOcrRenderer::BeginDocumentHandler() {
  AppendString(
        "<?xml version=\"1.0\" encoding=\"UTF-8\"?>\n"
        "<!DOCTYPE html PUBLIC \"-//W3C//DTD XHTML 1.0 Transitional//EN\"\n"
        "    \"http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd\">\n"
        "<html xmlns=\"http://www.w3.org/1999/xhtml\" xml:lang=\"en\" "
        "lang=\"en\">\n <head>\n  <title>\n");
  AppendString(title());
  AppendString(
      "</title>\n"
      "<meta http-equiv=\"Content-Type\" content=\"text/html;"
      "charset=utf-8\" />\n"
      "  <meta name='ocr-system' content='tesseract " TESSERACT_VERSION_STR
              "' />\n"
      "  <meta name='ocr-capabilities' content='ocr_page ocr_carea ocr_par"
      " ocr_line ocrx_word");
  if (font_info_)
    AppendString(
      " ocrp_lang ocrp_dir ocrp_font ocrp_fsize ocrp_wconf");
  AppendString(
      "'/>\n"
      "</head>\n<body>\n");

  return true;
}

bool
Library::Name(JSContext* cx, unsigned argc, Value* vp)
{
  CallArgs args = CallArgsFromVp(argc, vp);
  if (args.length() != 1) {
    JS_ReportErrorASCII(cx, "libraryName takes one argument");
    return false;
  }

  Value arg = args[0];
  JSString* str = nullptr;
  if (arg.isString()) {
    str = arg.toString();
  } else {
    JS_ReportErrorASCII(cx, "name argument must be a string");
    return false;
  }

  AutoString resultString;
  AppendString(resultString, DLL_PREFIX);
  AppendString(resultString, str);
  AppendString(resultString, DLL_SUFFIX);

  JSString* result = JS_NewUCStringCopyN(cx, resultString.begin(),
                                         resultString.length());
  if (!result)
    return false;

  args.rval().setString(result);
  return true;
}

nsresult
nsTextEquivUtils::AppendFromAccessible(nsIAccessible *aAccessible,
                                       nsAString *aString)
{
  nsCOMPtr<nsIAccessNode> accessNode(do_QueryInterface(aAccessible));

  nsCOMPtr<nsIDOMNode> DOMNode;
  accessNode->GetDOMNode(getter_AddRefs(DOMNode));
  nsCOMPtr<nsIContent> content(do_QueryInterface(DOMNode));
  NS_ASSERTION(content, "There is no content!");

  if (content) {
    nsresult rv = AppendTextEquivFromTextContent(content, aString);
    if (rv != NS_OK_NO_NAME_CLAUSE_HANDLED)
      return rv;
  }

  nsAutoString text;
  nsresult rv = aAccessible->GetName(text);
  NS_ENSURE_SUCCESS(rv, rv);

  PRBool isEmptyTextEquiv = PR_TRUE;

  // If the name is from tooltip then append it to result string in the end
  // (see h. step of name computation guide).
  if (rv != NS_OK_NAME_FROM_TOOLTIP)
    isEmptyTextEquiv = !AppendString(aString, text);

  // Implementation of f. step.
  rv = AppendFromValue(aAccessible, aString);
  NS_ENSURE_SUCCESS(rv, rv);

  if (rv != NS_OK_NO_NAME_CLAUSE_HANDLED)
    isEmptyTextEquiv = PR_FALSE;

  // Implementation of g) step of text equivalent computation guide. Go down
  // into subtree if accessible allows "text equivalent from subtree rule" or
  // it's not root and not control.
  if (isEmptyTextEquiv) {
    PRUint32 role = nsAccUtils::Role(aAccessible);
    PRUint32 nameRule = gRoleToNameRulesMap[role];

    if (nameRule & eFromSubtreeIfRec) {
      rv = AppendFromAccessibleChildren(aAccessible, aString);
      NS_ENSURE_SUCCESS(rv, rv);

      if (rv != NS_OK_NO_NAME_CLAUSE_HANDLED)
        isEmptyTextEquiv = PR_FALSE;
    }
  }

  // Implementation of h. step
  if (isEmptyTextEquiv && !text.IsEmpty()) {
    AppendString(aString, text);
    return NS_OK;
  }

  return rv;
}

int SystemMemoryMapInformation::MEMORY_INFORMATION::Insert( CSystemInfoListCtrl& list,
	size_t iItem, size_t iItemCount, BOOL bExpandRegions) const
{
	iItem;	// use var
	iItemCount;	// use var

	CString strBaseAddress, strSize, strType, strBlockCount, strProtect, strDescription;

	strBaseAddress.Format(FMT_REAL_DYN_PTR,
		(bRegion ? vmq.pvRgnBaseAddress : vmq.pvBlkBaseAddress ) );
	strSize.Format( _T("%Id"),
		(bRegion ? vmq.RgnSize : vmq.BlkSize ) );
	strType = GetMemStorageText( (bRegion ? vmq.dwRgnStorage : vmq.dwBlkStorage ) );

	if( vmq.dwBlkStorage != MEM_FREE )
	{
		strProtect = GetProtectText( 
			(bRegion ? vmq.dwRgnProtection : vmq.dwBlkProtection ), FALSE );
	}

	if( bRegion )
	{
		if( vmq.dwBlkStorage != MEM_FREE )
		{
			strBlockCount.Format( _T("%d"), vmq.dwRgnBlocks );
		}

		if( vmq.fRgnIsAStack )
		{
			AppendString( strDescription, LocLoadString(IDS_MEMORY_THREAD_STACK) );
		}
		AppendString( strDescription, Module );
		AppendString( strDescription, MappedFile );
	}

	int iListItemCount = list.GetItemCount();
	int nPos = list.InsertItem( iListItemCount, _T("") );

	if( bExpandRegions && !bRegion )
	{
		LVITEM item;
		ZeroMemory( &item, sizeof(item) );
		item.iItem = nPos;
		item.iSubItem = 0; // whole item
		item.mask = LVIF_INDENT;
		item.iIndent = 20 / LIST_IMAGE_WIDTH;
		list.SetItem( &item );
	}

	list.SetItemText( nPos, 0, strBaseAddress );
	list.SetItemText( nPos, 1, strSize );
	list.SetItemText( nPos, 2, strType );
	list.SetItemText( nPos, 3, strBlockCount );
	list.SetItemText( nPos, 4, strProtect );
	list.SetItemText( nPos, 5, strDescription );

	return nPos;
}

nsresult
nsTextEquivUtils::AppendFromValue(nsIAccessible *aAccessible,
                                  nsAString *aString)
{
  PRUint32 role = nsAccUtils::Role(aAccessible);
  PRUint32 nameRule = gRoleToNameRulesMap[role];

  if (nameRule != eFromValue)
    return NS_OK_NO_NAME_CLAUSE_HANDLED;

  // Implementation of step f. of text equivalent computation. If the given
  // accessible is not root accessible (the accessible the text equivalent is
  // computed for in the end) then append accessible value. Otherwise append
  // value if and only if the given accessible is in the middle of its parent.

  nsAutoString text;
  if (aAccessible != gInitiatorAcc) {
    nsresult rv = aAccessible->GetValue(text);
    NS_ENSURE_SUCCESS(rv, rv);

    return AppendString(aString, text) ?
      NS_OK : NS_OK_NO_NAME_CLAUSE_HANDLED;
  }

  nsRefPtr<nsAccessible> acc = do_QueryObject(aAccessible);
  nsCOMPtr<nsIDOMNode> node;
  acc->GetDOMNode(getter_AddRefs(node));
  NS_ENSURE_STATE(node);

  nsCOMPtr<nsIContent> content(do_QueryInterface(node));
  NS_ENSURE_STATE(content);

  nsCOMPtr<nsIContent> parent = content->GetParent();
  PRInt32 indexOf = parent->IndexOf(content);

  for (PRInt32 i = indexOf - 1; i >= 0; i--) {
    // check for preceding text...
    if (!parent->GetChildAt(i)->TextIsOnlyWhitespace()) {
      PRUint32 childCount = parent->GetChildCount();
      for (PRUint32 j = indexOf + 1; j < childCount; j++) {
        // .. and subsequent text
        if (!parent->GetChildAt(j)->TextIsOnlyWhitespace()) {
          nsresult rv = aAccessible->GetValue(text);
          NS_ENSURE_SUCCESS(rv, rv);

          return AppendString(aString, text) ?
            NS_OK : NS_OK_NO_NAME_CLAUSE_HANDLED;
          break;
        }
      }
      break;
    }
  }

  return NS_OK_NO_NAME_CLAUSE_HANDLED;
}

nsresult
nsTextEquivUtils::AppendFromAccessible(nsAccessible *aAccessible,
                                       nsAString *aString)
{
  //XXX: is it necessary to care the accessible is not a document?
  if (aAccessible->IsContent()) {
    nsresult rv = AppendTextEquivFromTextContent(aAccessible->GetContent(),
                                                 aString);
    if (rv != NS_OK_NO_NAME_CLAUSE_HANDLED)
      return rv;
  }

  nsAutoString text;
  nsresult rv = aAccessible->GetName(text);
  NS_ENSURE_SUCCESS(rv, rv);

  bool isEmptyTextEquiv = true;

  // If the name is from tooltip then append it to result string in the end
  // (see h. step of name computation guide).
  if (rv != NS_OK_NAME_FROM_TOOLTIP)
    isEmptyTextEquiv = !AppendString(aString, text);

  // Implementation of f. step.
  rv = AppendFromValue(aAccessible, aString);
  NS_ENSURE_SUCCESS(rv, rv);

  if (rv != NS_OK_NO_NAME_CLAUSE_HANDLED)
    isEmptyTextEquiv = PR_FALSE;

  // Implementation of g) step of text equivalent computation guide. Go down
  // into subtree if accessible allows "text equivalent from subtree rule" or
  // it's not root and not control.
  if (isEmptyTextEquiv) {
    PRUint32 nameRule = gRoleToNameRulesMap[aAccessible->Role()];
    if (nameRule & eFromSubtreeIfRec) {
      rv = AppendFromAccessibleChildren(aAccessible, aString);
      NS_ENSURE_SUCCESS(rv, rv);

      if (rv != NS_OK_NO_NAME_CLAUSE_HANDLED)
        isEmptyTextEquiv = PR_FALSE;
    }
  }

  // Implementation of h. step
  if (isEmptyTextEquiv && !text.IsEmpty()) {
    AppendString(aString, text);
    return NS_OK;
  }

  return rv;
}

nsresult
nsTextEquivUtils::AppendFromValue(nsAccessible *aAccessible,
                                  nsAString *aString)
{
  PRUint32 nameRule = gRoleToNameRulesMap[aAccessible->Role()];
  if (nameRule != eFromValue)
    return NS_OK_NO_NAME_CLAUSE_HANDLED;

  // Implementation of step f. of text equivalent computation. If the given
  // accessible is not root accessible (the accessible the text equivalent is
  // computed for in the end) then append accessible value. Otherwise append
  // value if and only if the given accessible is in the middle of its parent.

  nsAutoString text;
  if (aAccessible != gInitiatorAcc) {
    nsresult rv = aAccessible->GetValue(text);
    NS_ENSURE_SUCCESS(rv, rv);

    return AppendString(aString, text) ?
      NS_OK : NS_OK_NO_NAME_CLAUSE_HANDLED;
  }

  //XXX: is it necessary to care the accessible is not a document?
  if (aAccessible->IsDocumentNode())
    return NS_ERROR_UNEXPECTED;

  nsIContent *content = aAccessible->GetContent();

  nsCOMPtr<nsIContent> parent = content->GetParent();
  PRInt32 indexOf = parent->IndexOf(content);

  for (PRInt32 i = indexOf - 1; i >= 0; i--) {
    // check for preceding text...
    if (!parent->GetChildAt(i)->TextIsOnlyWhitespace()) {
      PRUint32 childCount = parent->GetChildCount();
      for (PRUint32 j = indexOf + 1; j < childCount; j++) {
        // .. and subsequent text
        if (!parent->GetChildAt(j)->TextIsOnlyWhitespace()) {
          nsresult rv = aAccessible->GetValue(text);
          NS_ENSURE_SUCCESS(rv, rv);

          return AppendString(aString, text) ?
            NS_OK : NS_OK_NO_NAME_CLAUSE_HANDLED;
          break;
        }
      }
      break;
    }
  }

  return NS_OK_NO_NAME_CLAUSE_HANDLED;
}

nsresult
nsTextEquivUtils::AppendFromValue(nsAccessible *aAccessible,
                                  nsAString *aString)
{
  PRUint32 nameRule = gRoleToNameRulesMap[aAccessible->Role()];
  if (nameRule != eFromValue)
    return NS_OK_NO_NAME_CLAUSE_HANDLED;

  // Implementation of step f. of text equivalent computation. If the given
  // accessible is not root accessible (the accessible the text equivalent is
  // computed for in the end) then append accessible value. Otherwise append
  // value if and only if the given accessible is in the middle of its parent.

  nsAutoString text;
  if (aAccessible != gInitiatorAcc) {
    aAccessible->Value(text);

    return AppendString(aString, text) ?
      NS_OK : NS_OK_NO_NAME_CLAUSE_HANDLED;
  }

  //XXX: is it necessary to care the accessible is not a document?
  if (aAccessible->IsDocumentNode())
    return NS_ERROR_UNEXPECTED;

  nsIContent *content = aAccessible->GetContent();

  for (nsIContent* childContent = content->GetPreviousSibling(); childContent;
       childContent = childContent->GetPreviousSibling()) {
    // check for preceding text...
    if (!childContent->TextIsOnlyWhitespace()) {
      for (nsIContent* siblingContent = content->GetNextSibling(); siblingContent;
           siblingContent = siblingContent->GetNextSibling()) {
        // .. and subsequent text
        if (!siblingContent->TextIsOnlyWhitespace()) {
          aAccessible->Value(text);

          return AppendString(aString, text) ?
            NS_OK : NS_OK_NO_NAME_CLAUSE_HANDLED;
          break;
        }
      }
      break;
    }
  }

  return NS_OK_NO_NAME_CLAUSE_HANDLED;
}

void CNativeW::AppendStringOld( const char* pData, int nDataLen )
{
	int nLen;
	wchar_t* szTmp=mbstowcs_new(pData,nDataLen,&nLen);
	AppendString(szTmp,nLen);
	delete[] szTmp;
}