C++ TDesC8类代码示例

//
// RTrkTcbCliSession::WriteFile()
//
// Writes data into the already opened file.
// @return KErrNone - if succesful
//		   Negative - if failed.
//
TInt RTrkTcbCliSession::WriteFile(const TDesC8& aFileData)
{
	TIpcArgs args(aFileData.Length(), &aFileData);
	
	return SendReceive(ETrkTcbCmdCodeWriteFile, args);
}

void CAppMain::SetAreaCode(const TDesC8& buf){
  if(buf.Length()<=6){
    this->iAreaCode.Copy(buf);
  }
}

// ---------------------------------------------------------------------------
// CWPTurnServerItem::SetTurnUsernameL
// ---------------------------------------------------------------------------
//
void CWPTurnServerItem::SetTurnUsernameL( const TDesC8& aUsername )
    {
    delete iTurnUsername;
    iTurnUsername = NULL;
    iTurnUsername = aUsername.AllocL();
    }

// -----------------------------------------------------------------------------
// CUpnpDevice::SetTypeL
// -----------------------------------------------------------------------------
//
void CUpnpDevice::SetTypeL( const TDesC8& aType )
    {
    HBufC8* tmp = aType.AllocL();
    delete iDeviceType;
    iDeviceType = tmp;
    }

void CX509GeneralName::ConstructL(const TDesC8& aData)
	{
	iData = aData.AllocL();
	}

// -----------------------------------------------------------------------------
// CUpnpArgument::SetValueL
// If the value is inproper, the method leaves with EInvalidArgs,
// which is the internal upnp error code used by UPnP Stack
// (other items were commented in a header).
// -----------------------------------------------------------------------------
//
EXPORT_C void CUpnpArgument::SetValueL( const TDesC8& aValue )
{
    LOGS("CUpnpArgument::SetValueL(TDesC8&) [Name/Value]");


    // Dates, times, URIs and UUIDs are not validated to save process time.
    // These must be validated if used in actual service,
    // which uses these arguments.
    TArgumentType type = Type();
    LOGS1( "type: %i", type );
    TLex8 lex(aValue);
    switch ( type )
    {
        
        case EUi1:
        {
            TUint8 tryVal;
            CheckErrorL( ( lex.Val(tryVal, EDecimal) ), aValue );
            break;
        }
        case EUi2:
        {
            TUint16 tryVal;
            CheckErrorL ( lex.Val(tryVal, EDecimal), aValue );
            break;
        }
        case EUi4:
        {
            TUint32 tryVal;
            CheckErrorL( lex.Val(tryVal, EDecimal), aValue );
            break;
        }
        case EI1:
        {
            TInt8 tryVal;
            CheckErrorL( lex.Val(tryVal), aValue );
            break;
        }
        case EI2:
        {
            TInt16 tryVal;
            CheckErrorL( lex.Val(tryVal), aValue );
            break;
        }
        case EI4:
        {
            TInt32 tryVal;
            CheckErrorL( lex.Val(tryVal), aValue );
            break;
        }
        case EInt:
        {
            TInt64 tryVal;
            CheckErrorL( lex.Val(tryVal), aValue );
            break;
        }
        case ER4:
        {
            TReal32 tryVal;
            CheckErrorL( lex.Val(tryVal), aValue );
            break;
        }
        case ER8:       
        case EFloat:
        case ENumber:
        {
            TReal64 tryVal;
            CheckErrorL( ( lex.Val(tryVal) ), aValue );
            break;
        }
        case EFixed144:
        {
            TReal64 tryVal;            
            switch ( lex.Val(tryVal) )
            {
                case KErrOverflow:
                {
                    // sizeof argument
                    User::Leave(EInvalidArgs);
                    break;
                }
                case KErrGeneral:
                {
                    // bad argument
                    User::Leave(EInvalidArgs);
                    break;
                }
                default:
                {

                    TInt left = aValue.Find(UpnpString::KDot8);                    
                    TInt right;
                    //only decimal part exists
//.........这里部分代码省略.........

// -----------------------------------------------------------------------------
// CUpnpDevice::SetDescriptionUrlL
// Return description URL.
// -----------------------------------------------------------------------------
//
void CUpnpDevice::SetDescriptionUrlL( const TDesC8& aDescriptionUrl )
    {
    HBufC8* tmp = aDescriptionUrl.AllocL();
    delete iDescriptionURL;
    iDescriptionURL = tmp;
    }

/**
 Test the driver data flow path by loopback, 
 i.e Transmit the data and receive same data back.  
 It runs the device @ default configuration
 
 @param		aLoopback
 				Loopback mode as internal or external
 			aTxData
 				Transmit Data buffer
 			aRxSize
 				Receive data size 
 */	
void TestExDriver::TestConcurrentTxRx(TInt aLoopback, const TDesC8& aTxData, TInt aRxSize)
	{
	TInt r;	
	
 	// Request status object for transmit and receive. These object will be 
 	// used to read the status of asynchronous requests after the notification
 	// of request completion 
 	//
 	TRequestStatus txStatus;
 	TRequestStatus rxStatus;
 	
 	// Timers and their respective status objects for Tx and Rx
 	RTimer timerTx;
	RTimer timerRx;
	TRequestStatus timeStatusTx;
	TRequestStatus timeStatusRx;
	
	iTest.Printf(_L("Test Concurrent Asynchronous Requests - Tx/Rx\n"));
	
	// Open channel 	
	r=iLdd.Open(KUnit1);
	iTest(r==KErrNone);
	
 	// Create a buffer that has to be filled and returned by the driver		
 	RBuf8 rxBuf; 	
 	r=rxBuf.Create(aRxSize); 	
 	iTest(r==KErrNone);	
	 	
	r=iLdd.SetIntLoopback(aLoopback);
	iTest(r==KErrNone);
	 	
 	// Create the timer that is relative to the thread 
 	r = timerTx.CreateLocal();
 	iTest(r==KErrNone);
 	r = timerRx.CreateLocal();
 	iTest(r==KErrNone);
  	 	 	 	
 	// Trigger timerRx expiry after KTimeOutTxRx. The status should be pending
	timerRx.After(timeStatusRx,KTimeOutTxRx);
	iTest(timeStatusRx==KRequestPending);
	 	  			
 	// Call ldd interface ReceiveData() API to get data to rxBuf
 	r = iLdd.ReceiveData(rxStatus, rxBuf);
 	// In case of zero length request
 	if (aRxSize==0)
 		{
 		 // Driver should return error immediately
 		iTest(r!=KErrNone); 		
 		// Close the RBuf
 		rxBuf.Close(); 		
 		// Close channel
		iLdd.Close();
 		return;
 		}
 	else
 		{
 		// Asynchronous request should be pending, with request message
 		// posted to driver successfully
 		//
 		iTest((r==KErrNone)&&(rxStatus.Int()==KRequestPending));
 		}
 		
   	// Trigger timerTx expiry after KTimeOutTxRx. The status should be pending   	
	timerTx.After(timeStatusTx,KTimeOutTxRx);
	iTest(timeStatusTx==KRequestPending);
		
 	// Call ldd interface TransmitData() API test data descriptor as parameter
 	r = iLdd.TransmitData(txStatus, aTxData);
 	// In case of zero length request
 	if (aTxData.Size()==0)
 		{
 		// Driver should return error immediately
 		iTest(r!=KErrNone);
 		// Close the RBuf
		rxBuf.Close();
		// Close channel
		iLdd.Close(); 	
		return;
 		}
 	else
 		{
 		// Asynchronous request should be pending, with request message
 		// posted to driver successfully
 		//
 		iTest(r==KErrNone);
 		}
 		 	    	 	
 	// Wait till the request is complete on rxStatus and txStatus. User thread
//.........这里部分代码省略.........

// Debug method to dump to log the response header's binary content
//
void CHTTPResponse::DumpToLog(const TDesC8& aData) const
    {
//	__LOG_ENTER(_L("CHTTPResponse::DumpToLog"));

	// Iterate the supplied block of data in blocks of 16 bytes
	__LOG(_L("CHTTPResponse::DumpToLog : START"));
	TInt pos = 0;
	TBuf<KMaxLogEntrySize> logLine;
	TBuf<KMaxLogEntrySize> anEntry;
	while (pos < aData.Length())
		{
		anEntry.Format(TRefByValue<const TDesC>_L("%04x : "), pos);
		logLine.Append(anEntry);

		// Hex output
		for (TInt offset = 0; offset < 16; offset++)
			{
			if (pos + offset < aData.Length())
				{
				TInt nextByte = aData[pos + offset];
				anEntry.Format(TRefByValue<const TDesC>_L("%02x "), nextByte);
				logLine.Append(anEntry);
				}
			else
				{
				anEntry.Format(TRefByValue<const TDesC>_L("   "));
				logLine.Append(anEntry);
				}
			}
			anEntry.Format(TRefByValue<const TDesC>_L(": "));
			logLine.Append(anEntry);

		// Char output
		for (TInt offset = 0; offset < 16; offset++)
			{
			if (pos + offset < aData.Length())
				{
				TInt nextByte = aData[pos + offset];
				if ((nextByte >= 32) && (nextByte <= 127))
					{
					anEntry.Format(TRefByValue<const TDesC>_L("%c"), nextByte);
					logLine.Append(anEntry);
					}
				else
					{
					anEntry.Format(TRefByValue<const TDesC>_L("."));
					logLine.Append(anEntry);
					}
				}
			else
				{
				anEntry.Format(TRefByValue<const TDesC>_L(" "));
				logLine.Append(anEntry);
				}
			}
			__LOG1(_L("%S"), &logLine);
			logLine.Zero();

		// Advance to next 16 byte segment
		pos += 16;
		}
	__LOG(_L("CHTTPResponse::DumpToLog : END"));
//	__LOG_RETURN;
    }

void CImapCopy::ConstructL(const TDesC8& aSequenceSet, const TDesC& aMailboxName)
	{
	iSequenceSet = aSequenceSet.AllocL();
	iMailboxName = EncodeMailboxNameForSendL(aMailboxName);
	}

TBool CAiwResolver::Match(const TDesC8& aImplementationType, const TDesC8& aMatchType, 
    TBool aUseWildcards) const
    {
    TInt matchPos = KErrNotFound;

    _LIT8(dataSeparator, "||");
    const TInt separatorLength = dataSeparator().Length();

    // Look for the section separator marker '||'
    TInt separatorPos = aImplementationType.Find(dataSeparator);

    if (separatorPos == KErrNotFound)
        {
        // Match against the whole string
        if (aUseWildcards)
            {
            matchPos = aImplementationType.Match(aMatchType);
            }
        else
            {
            if (aImplementationType.Compare(aMatchType) == 0)
                {
                matchPos = KErrNone;    
                }
            }
        }
    else
        {
        // Find the first section, up to the separator
        TPtrC8 dataSection = aImplementationType.Left(separatorPos);
        TPtrC8 remainingData = aImplementationType.Mid(separatorPos + separatorLength);

        // Match against each section in turn
        while (separatorPos != KErrNotFound)
            {
            // Search this section
            if (aUseWildcards)
                {          
                matchPos = dataSection.Match(aMatchType);
                }
            else
                {
                if (dataSection.Compare(aMatchType) == 0)
                    {
                    matchPos = KErrNone;
                    }
                }

            // If we found it then no need to continue, so return
            if (matchPos != KErrNotFound)
                {
                return ETrue;
                }

            // Move on to the next section
            separatorPos = remainingData.Find(dataSeparator);

            if (separatorPos != KErrNotFound)
                {
                dataSection.Set(remainingData.Left(separatorPos));
                remainingData.Set(remainingData.Mid(separatorPos + separatorLength));
                }
            else
                {
                dataSection.Set(remainingData);
                }   
            }

        // Check the final part
        if (aUseWildcards)
            {
            matchPos = dataSection.Match(aMatchType);
            }
        else
            {
            if (dataSection.Compare(aMatchType) == 0)
                {
                matchPos = KErrNone;
                }
            }
        }

    return matchPos != KErrNotFound;
    }

void CPppChap::MakeResponsePacketLC(TUint8 aIdentifier, 
				const TDesC8& aValue, 
				const TDesC8& aName, 
				RMBufPacket& aPacket)
/**
   Creates a CHAP response Packet.
   @param aIdentifier [in] The CHAP Response Identifier.
   @param aValue [in] The CHAP Response Value.
   @param aName [in] The CHAP Response Name.
   @param aPacket [out] The CHAP Response packet.
   @internalComponent
*/
	{
	ASSERT(aValue.Length() <= KMaxTInt8);
	ASSERT(aName.Length() <= 
		   KMaxTInt16 - 
		   KPppChapCodeFieldSize -
		   KPppChapIdFieldSize - 
		   KPppChapLengthFieldSize -
		   KPppChapValueSizeFieldSize -
		   aValue.Length());

	TUint16 length = static_cast<TUint16>(KPppChapCodeFieldSize +
			 	KPppChapIdFieldSize + 
				KPppChapLengthFieldSize +
				KPppChapValueSizeFieldSize + 
				aValue.Length() +
				aName.Length());

	aPacket.AllocL(length);
	CleanupStack::PushL(aPacket);
	RMBufPktInfo* info = aPacket.NewInfoL();

// Construct packet header
	TUint8* ptr = aPacket.First()->Ptr();

// write the CHAP Code field
	*ptr = KPppChapResponseCode;
	ptr += KPppChapCodeFieldSize;

// write the CHAP Identifier field
	*ptr = aIdentifier;
	ptr += KPppChapIdFieldSize;

// write the CHAP Length field
	BigEndian::Put16(ptr, length);
	ptr += KPppChapLengthFieldSize;

// write the CHAP Value-Size field
	*ptr = static_cast<TUint8>(aValue.Length());
	ptr += KPppChapValueSizeFieldSize;

	Mem::Copy(ptr, aValue.Ptr(), aValue.Length());
	ptr += aValue.Length();
	
	Mem::Copy(ptr, aName.Ptr(), aName.Length());
	ptr += aName.Length();

	info->iLength = length;
	TPppAddr::Cast((info->iDstAddr)).SetProtocol(KPppIdChap);
	aPacket.Pack();
	}

TInt CProfilerPowerListener::StartL(const TDesC8& aBuf)
    {
    LOGTEXT(_L("CProfilerPowerListener::StartL() - entry"));

    // get the property value
    TInt r = RProperty::Get(KGppPropertyCat, EGppPropertySyncSampleNumber, iSampleStartTime);
    if(r != KErrNone)
        {
        LOGSTRING2("CProfilerPowerListener::StartL() - getting iSyncOffset failed, error %d", r);
        }

   // check if given sampling period is valid
    if(aBuf.CompareF(KNullDesC8)!= 0)
        {
        TLex8* lex = new TLex8(aBuf);
        lex->Val(iPwrSamplingPeriod);
        delete lex;
        }
    else
        {
        // set default period
        iPwrSamplingPeriod = 250;
        }

    // Check that sampling period is in allowed range
    if (KMinSampleInterval > 0 && iPwrSamplingPeriod < KMinSampleInterval)
        {
        iPwrSamplingPeriod = KMinSampleInterval;
        }

    LOGSTRING2("CProfilerPowerListener::StartL() - Sampling period %d", iPwrSamplingPeriod);

    // Start monitoring voltage and current
    iPowerAPI = CHWRMPower::NewL();
    iPowerAPI->SetPowerReportObserver(this);

    // Read HWRM reporting settings from central repository
    CRepository* centRep = CRepository::NewL(KCRUidPowerSettings);
    TInt baseInterval(0);
    User::LeaveIfError(centRep->Get(KPowerBaseTimeInterval, baseInterval));
    User::LeaveIfError(centRep->Get(KPowerMaxReportingPeriod, iOriginalReportingPeriod));

    LOGSTRING2("CProfilerPowerListener::StartL() - HWRM base power report interval: %d", baseInterval);
    LOGSTRING2("CProfilerPowerListener::StartL() - Original HWRM max power reporting period: %d", iOriginalReportingPeriod);

    User::LeaveIfError(centRep->Set(KPowerMaxReportingPeriod, KReportingPeriodInfinite));

    // Power reporting interval reading may return too low value sometimes. Minimum value expected to be 250ms.
    if ( baseInterval < KMinSampleInterval )
        {
        baseInterval = KMinSampleInterval;
        LOGSTRING2("CProfilerPowerListener::StartL() - Power report interval too low. Changed to: %d", baseInterval);
        }

    // Power reporting period is multiplier of HWRM base period
    TInt intervalMultiplier = iPwrSamplingPeriod / baseInterval;

    if (intervalMultiplier < 1)
        {
        intervalMultiplier = 1;
        }

    LOGSTRING2("CProfilerPowerListener::StartL() - Reporting period multiplier: %d", intervalMultiplier);

    TRequestStatus status(KRequestPending);
    iPowerAPI->StartAveragePowerReporting(status, intervalMultiplier);
    User::WaitForRequest(status);

    if (status.Int() != KErrNone)
        {
        LOGTEXT(_L("CProfilerPowerListener::StartL() - Failed to initialize power reporting"));

        DisplayNotifierL(KPowerTextLine1, KPowerTextLine2, KButtonOk, KNullDesC);

        return status.Int();
        }

#ifdef PWR_SAMPLER_BACKLIGHT
    // Start monitoring backlight status
    iLightAPI = CHWRMLight::NewL(this);
#endif

    LOGTEXT(_L("CProfilerPowerListener::StartL() - exit"));
    return KErrNone;
    }

TBool CCommonUtils::HexToDec(const TDesC8& aHexDes,TInt& aDec)
{
	TInt i,mid; 
	TInt len = aHexDes.Length();//lstrlen( aHexDes ); 

	//if( len > 9 )//#00ff00ff? 
	//	return EFalse; 

	mid = 0; aDec = 0; 
	for( i = 0;i < len; i++ ) 
	{ 
		if( (aHexDes.Ptr())[i]>='0' && (aHexDes.Ptr())[i]<='9' ) 
		{
			mid = (aHexDes.Ptr())[i]-'0'; 
		}
		else if( (aHexDes.Ptr())[i]>='a'&& (aHexDes.Ptr())[i]<='f' ) 
		{
			mid = (aHexDes.Ptr())[i] -'a' +10; 
		}
		else if( (aHexDes.Ptr())[i]>='A'&& (aHexDes.Ptr())[i]<='F' ) 
		{
			mid = (aHexDes.Ptr())[i] -'A' +10;
		}
		else if ((aHexDes.Ptr())[i] == '#') 
		{
			continue;
		}
		else
		{
			return EFalse; 
		}

		mid <<= ((len-i-1)<<2); 
		aDec |= mid; 

	} 
	return ETrue; 
}

void CLogFileControl::WriteXml(const TDesC8 &aDes)
/**
 * @param aDes - send a aDes string in xml format to a log file
 */
	{
/*--------- Maintaince Warning:  -----------------------------------
******* the fomat of below is sensible from client original format.  
******* Any change should match actual string formated from client. 
******* Double check the code on client side 

* The current assumtion of format:
* First string values are seperated by sign " - " and extra pair of fields are
* seperated from main log message  by long unusual string "LogFieldsRequiredBeingAddedToAboveLogMessage"
* The \t used to seperate field name and field value and \r\n used to seperate
* each other from those pairs of field
* \t\t\t\t\t\t is used to end of whole string
--------------------------------------------------------------------------------*/
		_LIT8(KxmlHeader,"<?xml version=\"1.0\" encoding=\"ISO-8859-1\"?>\r\n<LOGFILE>");
		//The order of variables:
		// time 		- aTime
		// Severity 	- aSeverity
		// Thread 		- aThread
		// Filename 	- aFilename
		// Linenumber 	- aLinenumber
		// Text 		- aText
		
		// Start of string retrive/deformating 
		HBufC8* pBuf1 = HBufC8::New(KMaxLoggerLineLength*2); //(aDes.Length()+200);
		if(!pBuf1)
			{
			return; // no memory 
			}
		TPtr8 aPtr(pBuf1->Des());  // used for searching
		TPtr8 alogbuf(pBuf1->Des());  //used for final log
		aPtr.Append(aDes);
		TPtrC8 SearchBuf;
		TInt aCount[8]; 
		aCount[0]=0;
		TInt posI(0);

        // retrive log message:
		// Retrive common part of log message:
		TInt i=0;
		for(i=1; i<6; i++)
			{
			SearchBuf.Set(aPtr.Mid(posI));
			aCount[i]=SearchBuf.Find(KSeperation8)+posI;
			posI=aCount[i]+3;
			if(aCount[i]<aCount[i-1])	
                {
                delete pBuf1;
                return; // wrong format string from client
                }
			}
		// seperating common log message and extra log fields will be easy for future maintaince.
		TLogField8* alogField = new TLogField8[6];  // the common part of log message for both 
								  					// with and without extra log fields
		if(!alogField) 
            {
            delete pBuf1;
            return; // no memory
            }

		TLogField8* extralogField=NULL; // only applied to extra log fields

		TInt alength=0;  // a length of array of extra log fields

		alogField[0].iLogTag8.Copy(_L8("TIME"));
		alogField[1].iLogTag8.Copy(_L8("SEVERITY"));
		alogField[2].iLogTag8.Copy(_L8("THREAD"));
		alogField[3].iLogTag8.Copy(_L8("FILENAME"));
		alogField[4].iLogTag8.Copy(_L8("LINENUMBER"));
		alogField[5].iLogTag8.Copy(_L8("TEXT"));
			
		alogField[0].iLogValue8.Copy(aPtr.Mid(aCount[0],aCount[1]-aCount[0]));
		for(i=1; i<5; i++)
			{
			alogField[i].iLogValue8.Copy(aPtr.Mid(aCount[i]+3,aCount[i+1]-aCount[i]-3));				
			}

		SearchBuf.Set(aPtr.Mid(posI));
		aCount[6]=SearchBuf.Find(_L8("LogFieldsRequiredBeingAddedToAboveLogMessage"))+posI; 
		if(aCount[6]<posI)  // no addtional fields. Find return value is KErrNotFound or >0
			{
			alogField[5].iLogValue8.Copy(aPtr.Mid(aCount[5]+3,aDes.Length()-aCount[5]-5));
			}
		else
            {
			alogField[5].iLogValue8.Copy(aPtr.Mid(aCount[5]+3,aCount[6]-aCount[5]-5));
			posI=aCount[6]+45;  //45 is from the length of long string and a tab
			SearchBuf.Set(aPtr.Mid(posI));
			aCount[7]=SearchBuf.Find(_L8("\r\n"))+posI;
			TLex8 lex(aPtr.Mid(posI,aCount[7]-posI));  // get the length
			TInt err=lex.Val(alength); 
			if (err)
                alength=0; // ignor the extra log fields. Let the log go

			// Retrive the extra log fields
			extralogField = new TLogField8[alength];
			if(!extralogField)
//.........这里部分代码省略.........