C++ TLex::Eos方法代码示例

// -----------------------------------------------------------------------------
// CStartupAdaptationStubModel::ReadStructuredListL
//
// -----------------------------------------------------------------------------
//
void CStartupAdaptationStubModel::ReadStructuredListL(
    const TInt aNumParts,
    TLex& aLexer,
    CStructuredList& aList )
    {
    RDEBUG( _L( "CStartupAdaptationStubModel::ReadStructuredListL." ) );

    while ( !aLexer.Eos() )
        {
        aList.AppendL( ReadDurationL( aLexer ) );

        TUint val( 0 );
        User::LeaveIfError( aLexer.Val( val, EHex ) );
        aList.AppendL( val );

        for ( TInt i = 0; i < aNumParts - 1; i++ )
            {
            if ( aLexer.Get() != ',' ) User::Leave( KErrCorrupt );

            User::LeaveIfError( aLexer.Val( val, EHex ) );
            aList.AppendL( val );
            }

        if ( !aLexer.Eos() && aLexer.Get() != ';' ) User::Leave( KErrCorrupt );
        }

    if ( aList.Count() == 0 ) User::Leave( KErrCorrupt );

    RDEBUG_1( _L( "CStartupAdaptationStubModel::ReadStructuredListL finished. List length: %d" ), aList.Count() );
    }

/**
 * Used for extracting the latter components of a TVersion from a string of the
 * form 1.2.3
 * Before reading checks that the end of the string has not yet been reached,
 * then steps past the first character (assumed to be '.' and attempts to read
 * an integer from the following character(s).
 * Any error in version length or missing components (e.g. if the version is "1")
 * reports 0 for thet missing part(s).
 */
TInt CTe_LbsIniFileReader::GetNextVersionPart(TLex& aLex) const
{
    TInt number = 0;
    if(!aLex.Eos())
    {
        aLex.Inc();
        if(!aLex.Eos())
        {
            aLex.Val(number);
        }
    }
    return(number);
}

void GetEnumValuesL(TLex& aLex, RBuf& aValues, RBuf& aDescriptions)
	{
	aValues.CreateL(0x100);
	aDescriptions.CreateL(0x100);

	while (!aLex.Eos())
		{
		TLexMark mark;
		aLex.Mark(mark);
		TPtrC command(NextCommand(aLex));
		if (command == KCmndEnumValue)
			{
			TPtrC value(NextWord(aLex));
			TPtrC description(TextToNextCommand(aLex));
			if (value.Length() == 0)
				{
				User::Leave(KErrArgument);
				}
			AppendL(aValues, value, EFalse);
			if (description.Length() > 0)
				{
				AppendL(aDescriptions, description, ETrue);
				}
			}
		else
			{
			aLex.UnGetToMark(mark);
			break;
			}
		}
	}

//fix for DEF017686: EMail notification parser leaves when field data is empty  
void CEmailNotificationParser::LeaveIfEmptyFieldsL(const TDesC& aFieldName,
												   const TLex& aTokenLex)
	{
/*
 		The following  checks for an empty field value.
 		The only fields allowed to be empty are the subject  and extension fields.
 		Hence, the check is done when aFieldName is not  a subject field and an extension field.
 		However, it is not possible to explicitly check for an extension field as we don't 
 		know which strings to compare. Therefore, a comparison with all the known field names
 		must be performed instead. The risk is fairly small as the change is localised and it can 
 		be easily tested.
*/

	if ((aFieldName.CompareF(KHeaderFrom)==KErrNone) ||
 		(aFieldName.CompareF(KHeaderSize)==KErrNone) ||
		(aFieldName.CompareF(KHeaderUidImap)==KErrNone) ||
 		(aFieldName.CompareF(KHeaderUidPop)==KErrNone) ||
 		(aFieldName.CompareF(KHeaderServerId)==KErrNone) ||
 		(aFieldName.CompareF(KHeaderAttachments)==KErrNone) ||
 		(aFieldName.CompareF(KHeaderTo)==KErrNone) ||
 		(aFieldName.CompareF(KHeaderCc)==KErrNone) ||
 		(aFieldName.CompareF(KHeaderDate)==KErrNone) ||
 		(aFieldName.CompareF(KHeaderFolder)==KErrNone) ||
 		(aFieldName.CompareF(KHeaderSender)==KErrNone) ||
 		(aFieldName.CompareF(KHeaderReplyTo)==KErrNone) ||
 		(aFieldName.CompareF(KHeaderUidValidity)==KErrNone) //not sure if this actually exists*/
	   )
 		
 		if (aTokenLex.Eos())
 			User::Leave(KBspSmartMessageInvalidToken);	
	}

/**
Parses URL from a token. Is used by SearchUrlL method and if a URL
was found it's appended to item array. Note that parsing for generic URIs 
is done with SearchGenericUriL -method.

@param aType  a Type of URL to seach, i.e.
                  www.
                  wap.
                  IP e.g.127.0.0.1
@param        aTokenPtr Pointer to token that will be parsed
@param        aTextOffset Offset of the token (start position in the whole text)
@leave KErrNone, if successful; otherwise one of the other system-wide error codes.
@return ETrue if the parameter for phone number is valid, else returns EFalse
*/
TBool CTulAddressStringTokenizer::ParseUrlL(const TDesC& aType, const TPtrC& aTokenPtr, TInt aTextOffset)
    {
    TBool wasValidUrl = EFalse;
    TLex url;
    
    TInt position = aTokenPtr.FindF( aType ); 
    if ( position != KErrNotFound )
        { // address start found
        url = aTokenPtr.Right( aTokenPtr.Length() - position );
        url.Inc( aType.Length() );

        while( IsValidUrlChar( url.Peek() ) && !(url.Eos()) )
            {
            if( url.Peek() == ':' )
                {
                url.Inc();
                if ( !url.Peek().IsDigit() )
                    {
                    url.UnGet();
                    break;
                    }
                }
            else
                url.Inc();
            }

        // If a period or question mark was followed by a whitespace remove it
        if ( url.Eos() ) // Can't be followed by white space if it's
            { // the last character at token
            url.UnGet();
            if ( url.Peek() != '.' && url.Peek() != '?' && url.Peek() != ',' )	// If it wasn't a period or question mark
                url.Inc();
            }
        
        url.Mark();
        wasValidUrl = ETrue;
        }

    if ( wasValidUrl && ( url.MarkedOffset() > aType.Length() ) )
        {
        AddItemL( aTextOffset - aTokenPtr.Length() + position, url.MarkedOffset(), EFindItemSearchURLBin );
        return ETrue;
        }

    return EFalse;
    }

EXPORT_C TInt CScriptFile::GetNextWord(TLex& aInput, TChar aDelimiter, TPtrC& aOutput)
	{
	//Get to the start of the descriptor
	while (!aInput.Peek().IsAlphaDigit() && aInput.Peek() != '+' && !aInput.Eos() && aInput.Peek() != aDelimiter)
		aInput.Inc();

	if (aInput.Eos())
		return KErrNotFound;

	aInput.Mark();

	while (aInput.Peek() != aDelimiter && !aInput.Eos())
		aInput.Inc();

	aOutput.Set(aInput.MarkedToken());

	if (!aInput.Eos())
		aInput.SkipAndMark(1);

	return KErrNone;
	}

/*
-------------------------------------------------------------------------------

    Class: CStifSectionParser

    Method: GotoEndOfLine

    Description: Goes end of the line.

    Parameters: TLex& lex: inout: Parsed line.

    Return Values: TInt: Last item's end position.

    Errors/Exceptions: None

    Status: Proposal

-------------------------------------------------------------------------------
*/
TInt CStifSectionParser::GotoEndOfLine( TLex& lex )
    {
    // End position of the last token(Initialized with current position)
    TInt lastItemPosition( lex.Offset() );

    // LINE BREAK NOTE:
    // Line break in SOS, WIN:  '\r\n'
    // Line break in UNIX:      '\n'

    do
        {
        // Peek next character(10 or '\n' in UNIX style )
        if( lex.Peek() == 0x0A )
            {
            lex.Inc();
            break;
            }

        // Peek next character(13 or '\r' in Symbian OS)
        if ( lex.Peek() == 0x0D )
            {
            // Increment the lex position
            lex.Inc();
            // Peek next character(10 or '\n' in Symbian OS)
            if ( lex.Peek() == 0x0A )
                {
                // End of the section is found and increment the lex position
                lex.Inc();
                break;
                }
            // 0x0A not found, decrement position
            lex.UnGet();
            }
        // Peek for tabulator(0x09) and space(0x20)
        else if ( lex.Peek() == 0x09 || lex.Peek() == 0x20 )
            {
            // Increment the lex position
            lex.Inc();
            continue;
            }
        
        // If white spaces not found take next token
        lex.NextToken();
        lastItemPosition = lex.Offset();    
        
        } while ( !lex.Eos() );
        
    return lastItemPosition;

    }

// ----------------------------------------------------
// CheckIPv6Address()
// IPv6address = hexpart [ ":" IPv4address ]
// ----------------------------------------------------
//
LOCAL_C TBool CheckIPv6Address( TLex& aLex )
    {
    TBool result( CheckIPv6HexPart( aLex ) );
    if( aLex.Peek() == '.' )
        {
        while( aLex.Peek() != ':' && aLex.Offset() > 0 )
            {
            aLex.UnGet();
            }
        aLex.Inc();
        result = CheckIPv4Address( aLex );
        }

    return result && aLex.Eos();
    }

TInt  TfrLex::ValF( TLex& aLex, const TDesC& aTerm )
{
TLex term( aTerm );
TLexMark mark;

aLex.Mark( mark );
while ( !term.Eos() )
	{
	if ( aLex.Eos() || User::Fold(term.Get()) != User::Fold(aLex.Get()) )
		{
		aLex.UnGetToMark( mark );
		return KErrNotFound;
		}
	}
return KErrNone;
}

TInt CSwisExpressionEnvironment::ParseVersionComponent(const TDesC& aComponentString)
	{
	/** 
	 *  Convert the string into a TInt representation and check that
	 *  the string is a valid decimal value
	 */
	TLex componentLex = aComponentString;
	TInt componentValue = 0;
	
	if(componentLex.Val(componentValue) == KErrNone && componentLex.Eos())
		{
		return componentValue;
		}
	
	// Return an error if the TInt value is not parsed correctly
	return KErrNotFound;
	}

// -----------------------------------------------------------------------------
// CAknKeyRotatorImpl::SkipSpaces
// Goes over digits and returns that sequence.
// -----------------------------------------------------------------------------
//
TPtrC CAknKeyRotatorImpl::GetDigits( TLex& aLex )
    {
    // Mark current place and go over digits.
    aLex.Mark();
    while ( !aLex.Eos() && !IsEndOfLine( aLex.Peek() ) )
        {
        if ( aLex.Peek().IsDigit() )
            {
            aLex.Inc();
            }
        else
            {
            break;
            }
        }
    return aLex.MarkedToken();
    }

// -----------------------------------------------------------------------------
// CAknKeyRotatorImpl::SkipSpaces
// Skips over spaces.
// -----------------------------------------------------------------------------
//
TInt CAknKeyRotatorImpl::SkipSpaces( TLex& aLex )
    {
    TInt flags = 0;
    // Skip spaces, but stop at end of line.
    while ( !aLex.Eos() && !IsEndOfLine( aLex.Peek() ) )
        {
        if ( aLex.Peek().IsSpace() )
            {
            // There was a space, so ok for now.
            flags |= EAknWasSpace;
            aLex.Inc();
            }
        else
            {
            flags |= EAknWasCharacter;
            break;
            }
        }
    return flags;
    }

/**
 * Read the Cfg File data into a heap buffer
 * And populate the arrays of selective test case IDs and 
 * Ranges to be used by the state machine
 * NOTE: we do not support nested cfgs...
 */
LOCAL_C void CreateCfgDataFromFileL(TPtrC& aCfgFilePath,RArray<TRange>& aSelectiveCaseRange, TDesC*& aSelTestCfgFileData)
	{
	
	RFs fS;
	User::LeaveIfError(fS.Connect());
	CleanupClosePushL(fS);
	RFile cfgFile;
	User::LeaveIfError(cfgFile.Open(fS,aCfgFilePath,EFileRead | EFileShareAny));
	CleanupClosePushL(cfgFile);
	TInt fileSize;
	User::LeaveIfError(cfgFile.Size(fileSize));
	// Create a 16bit heap buffer
	HBufC* cfgData = HBufC::NewL(fileSize);
	CleanupStack::PushL(cfgData);
	HBufC8* narrowData = HBufC8::NewL(fileSize);
	CleanupStack::PushL(narrowData);
	TPtr8 narrowPtr=narrowData->Des();
	// Read the file into an 8bit heap buffer
	User::LeaveIfError(cfgFile.Read(narrowPtr));
	TPtr widePtr(cfgData->Des());
	// Copy it to the 16bit buffer
	widePtr.Copy(narrowData->Des());
	CleanupStack::PopAndDestroy(narrowData);
	CleanupStack::Pop(cfgData);
	CleanupStack::Pop(2);
	cfgFile.Close();
	fS.Close();
	// Set up the instance token parser
	TLex cfgLex = cfgData->Des();
	aSelTestCfgFileData = cfgData; // to preserve the pointer of cfgdata and transfer the ownership to aSelTestCfgFileData 
	cfgData = NULL; // relinquish the ownership
	while(!cfgLex.Eos())
		{
		DistinguishElement(cfgLex.NextToken(),aSelectiveCaseRange) ; 
		}
	
	}

TBool CSettingView::SaveSettingsL()
{
    // Save settings to the member variables

    StoreSettingsL();

    // Validate input

    TLex lex;

    TInt maxPacketCount;
    lex.Assign( iMaxPacketCount );
    if ( lex.Val( maxPacketCount ) != KErrNone ) 
    {
        CEikonEnv::Static()->InfoMsg(_L("Packet count must be numeric"));
        return EFalse;
    }

    TInt packetDataSize;
    lex.Assign( iPacketDataSize );
    if ( lex.Val( packetDataSize ) != KErrNone ) 
    {
        CEikonEnv::Static()->InfoMsg(_L("Packet size must be numeric"));
        return EFalse;
    }

    TInt waitTime;
    lex.Assign( iWaitTime );
    if ( lex.Val( waitTime ) != KErrNone ) 
    {
        CEikonEnv::Static()->InfoMsg(_L("Wait time must be numeric"));
        return EFalse;
    }

    TInt lastWaitTime;
    lex.Assign( iLastWaitTime );
    if ( lex.Val( lastWaitTime ) != KErrNone ) 
    {
        CEikonEnv::Static()->InfoMsg(_L("Last wait time must be numeric"));
        return EFalse;
    }

    lex.Assign( iPattern );
    while (!lex.Eos())
    {
        if (!lex.Get().IsHexDigit())
        {
            CEikonEnv::Static()->InfoMsg(_L("Pattern must be hexadecimal"));
            return EFalse;
        }
    }

    // Validation OK, so save settings to the model

    iPingModel->iPackLimit = iLimitPacketCount;
    iPingModel->iTotalPackets = maxPacketCount;
    iPingModel->iPacketDataSize = packetDataSize;
    iPingModel->iSecWait = waitTime;
    iPingModel->iLastSecWait = lastWaitTime;
    iPingModel->iPattern.Copy(iPattern);
    iPingModel->iQuiet = iQuiet;
    iPingModel->iVerbose = iVerbose;
    iPingModel->iDebug = iDebug;

#ifdef IAPSETTING
	TInt iap;
	lex.Assign( iIAP );
	lex.Val( iap );
	iPingModel->iIAP = iap;
#endif

    return ETrue;
}

//
//  ParseMessageL()
//
//  Simple Notification:
//      Looks for number of messages and "From:" field
//      writes numMsg into the parsed field array, sets
//      entry.iDetails to the "From:" 
//  Complicated Notification:
//      does the above and writes everything else into
//      the array....
//
void CEmailNotificationParser::ParseMessageL()
    {
    TBool isSimpleNotification = EFalse; 
    TLex  tokenLex;
    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();

//.........这里部分代码省略.........