C++ TLex::Remainder方法代码示例

TInt SkipToNextCommand(TLex& aLex)
	{
	if ((aLex.Offset() == 0) && (aLex.Remainder().Find(KPartialCommandStart) == 0))
		{
		return KErrNone;
		}

	return SkipTo(aLex, KCommandStart);
	}

TInt SkipToEnd(TLex& aLex, const TDesC& aDes)
	{
	TInt ret = aLex.Remainder().Find(aDes);
	if (ret >= 0)
		{
		aLex.Inc(ret + aDes.Length());
		return KErrNone;
		}
	return KErrNotFound;
	}

TPtrC LineRemainder(TLex& aLex)
	{
	aLex.Mark();
	if (SkipTo(aLex, KNewLine) == KErrNone)
		{
		return aLex.MarkedToken();
		}
	else
		{
		return aLex.Remainder();
		}
	}

TPtrC NextCommand(TLex& aLex)
	{
	TPtrC command;
	if (SkipToNextCommand(aLex) == KErrNone)
		{
		SkipToEnd(aLex, KPartialCommandStart);
		aLex.Mark();
		aLex.SkipCharacters();
		command.Set(aLex.MarkedToken());
		}
	else
		{
		aLex.Inc(aLex.Remainder().Length());
		}
	return command;
	}

TPtrC TextToNextCommand(TLex& aLex)
	{
	aLex.Mark();

	if (SkipToNextCommand(aLex) != KErrNone)
		{
		aLex.Inc(aLex.Remainder().Length());
		}

	TLex lex(aLex.MarkedToken());
	
	// Strip leading white space.
	while (!lex.Eos())
		{
		if (lex.Peek().IsSpace())
			{
			lex.Get();
			}
		else
			{
			break;
			}
		}
	lex.Mark();
	TInt startOffset = lex.Offset();

	// Remove trailing white space.
	lex.Inc(lex.Remainder().Length());
	while (lex.Offset() > startOffset)
		{
		lex.UnGet();
		if (!lex.Peek().IsSpace())
			{
			lex.Get();
			break;
			}
		}

	return lex.MarkedToken();
	}

void CCommandInfoFile::AddSubCommandL(TLex& aNameLex, TLex& aDataLex, RFs& aFs, const TDesC& aFileName)
	{
	TPtrC subCommandName(NextWord(aNameLex));
	TBool found(EFalse);
	for (TInt i = (iChildren.Count() - 1); i >= 0; --i)
		{
		if (iChildren[i]->Name() == subCommandName)
			{
			iChildren[i]->AddSubCommandL(aNameLex, aDataLex, aFs, aFileName);
			found = ETrue;
			break;
			}
		}
	__ASSERT_ALWAYS(found || (aNameLex.Remainder().Length() == 0), IoUtils::Panic(ECifSubCommandParentNotFound));
	if (!found)
		{
		CCommandInfoFile* subCommand = new(ELeave) CCommandInfoFile(*this);
		CleanupStack::PushL(subCommand);
		subCommand->iName.Set(subCommandName);
		subCommand->ReadDetailsL(aDataLex, aFs, aFileName);
		iChildren.AppendL(subCommand);
		CleanupStack::Pop(subCommand);
		}
	}

//.........这里部分代码省略.........
    TPtrC fieldName;
    TPtrC fieldValue;

	// reset parsedfield array
	for(TInt i = iParsedFieldArray->Count();--i>=0;)
		(*iParsedFieldArray)[i]->SetFieldValueL(_L(""));

    // Set extraction mark at first character
    iSms.SkipSpaceAndMark();
	if(iSms.Peek() == KCharSlash)
		{
		// Check first line is <header>
		iSms.SkipCharacters();

		if (iSms.MarkedToken() != KEmailHeader)
			{
			User::Leave(KBspInvalidMessage);
			}
		// Get <new-amount> from second line and check for terminating linefeed
		iSms.SkipSpaceAndMark();
		}

    // Val() seeks forward from next char position, looking for valid
    // digits and incrementing next char as it goes.
    if (!(iSms.Val(iMessageCount) == KErrNone  &&  iMessageCount >= 0))     // If marked token is not a valid positive integer
        {
        iMessageCount = 0;
        User::Leave(KBspInvalidMessage);
        }
    else
        {
        fieldValue.Set(iSms.MarkedToken());                            //  The message count..
        AddParsedFieldL(KHeaderNumberMessages, fieldValue, ETrue);
        }

    // Next character may now be at newline or space after integer.
    // If at space, advance to newline.
    while (iSms.Peek() != KCharLineFeed && !iSms.Eos())
        iSms.Inc();

    iSms.SkipSpaceAndMark();

    // Now parse the rest of the fields, if any.
    while (!iSms.Eos())
        {
        while (iSms.Peek() != KCharLineFeed  &&  !iSms.Eos())
            iSms.Inc();     //  Skip to next delimiter

        if (iSms.Eos())
            break;          //  we've finished break out of the function

        if (iSms.TokenLength() == 0)
            User::Leave(KBspSmartMessageInvalidToken);

        //  Parsing....
        tokenLex.Assign(iSms.MarkedToken());        // Assign token to a new TLex
        while (tokenLex.Peek() != KCharColon  &&  !tokenLex.Eos())
            tokenLex.Inc();     //  Advance to a ':'

        if (tokenLex.Eos()  ||  tokenLex.TokenLength() == 0)
            User::Leave(KBspSmartMessageInvalidToken);


        fieldName.Set(tokenLex.MarkedToken());      // Store (pointer to) field name
        tokenLex.Inc();

		//fix for DEF017686
		LeaveIfEmptyFieldsL(fieldName,tokenLex);
		
        
        tokenLex.SkipSpaceAndMark();                // Step past optional spaces

		//fix for DEF017686
        LeaveIfEmptyFieldsL(fieldName,tokenLex);
	
		// if it's the server id field try to extract the id value
		// and match to an existing email service
		if(fieldName.CompareF(KHeaderServerId)==KErrNone)
			{
			TInt valErr = tokenLex.Val(iServerId);
			if(valErr != KErrNone)
				iServerId = 0;
			else
				GetEmailServicesL();

			tokenLex.UnGetToMark();
			}	
		fieldValue.Set(tokenLex.Remainder());       // Store (pointer to) field value

        if(!isSimpleNotification)
            {
            AddParsedFieldL(fieldName, fieldValue, EFalse);
            }		

        // Successfully parsed a token. Move iSms's next character past the
        // (linefeed) delimiter, set the extraction mark and reiterate to
        // look for next token.
        iSms.SkipSpaceAndMark();
        }
    }