C++ TBuf8::Delete方法代码示例

TBool CLinePaginatorTest::ReadTestFile(TPageLine& aLine)
	{
	TLex8 lex;
	TBuf8<128> textBuffer;
	TBuf8<128> numBuffer;
	TInt startNum;

	iTestFile.Read(iFilePos,textBuffer,128);
	if (textBuffer.Locate('X') != KErrNotFound && textBuffer.Locate('X') < textBuffer.Locate('\r'))
		{
		startNum=textBuffer.Locate('\n')+1;
  		textBuffer.Delete(0,startNum);
		iFilePos+=startNum;
		lex=textBuffer;
		lex.Val(aLine.iDocPos);
		TBuf<254> buf;
		buf.AppendFormat(_L("%d\tX\n"), aLine.iDocPos);
		TESTPRINT(buf);
		return EFalse;
		}

	startNum=textBuffer.Locate('\n')+1;
	textBuffer.Delete(0,startNum);
	iFilePos+=startNum;
	lex=textBuffer;
	lex.Val(aLine.iDocPos);

	startNum=textBuffer.Locate('\t')+1;
	textBuffer.Delete(0,startNum);
	iFilePos+=startNum;
	lex=textBuffer;
	lex.Val(aLine.iLineHeight);

	startNum=textBuffer.Locate('\t')+1;
	textBuffer.Delete(0,startNum);
	iFilePos+=startNum;
	lex=textBuffer;
	lex.Val(aLine.iKeepWithNext);

	startNum=textBuffer.Locate('\t')+1;
	textBuffer.Delete(0,startNum);
	iFilePos+=startNum;
	lex=textBuffer;
	lex.Val(aLine.iStartNewPage);

	if (textBuffer.Locate('\t')<textBuffer.Locate('\r')
		&& textBuffer.Locate('B')!=KErrNotFound
		&& textBuffer.Locate('B')<textBuffer.Locate('\r'))
		iTestPageBreak=ETrue;
	else
		iTestPageBreak=EFalse;

	iFilePos+=textBuffer.Locate('\r')+1;
	return ETrue;
	}

/**
 * Convert a string to Hexadecimal
 *
 * @param aData			String descriptor
 * @param aDes			Descriptor where Hex value is stored
 *
 * @return				N/A
 *
 * @leave				System wide error
 */
void CT_DataVerify::ConvertString2HexL( const TDesC8& aData, TDes8& aDes )
    {
	TBuf8<DataVerify::KCharlength> charBuf;

	// Check that buffer is even number
	if( ( aData.Length() % DataVerify::KCharlength ) != 0 )
		{
		User::Leave( KErrBadDescriptor );
		}

	// Go through the data and convert it two characters at a time
	// buffer overflow does not occur because buffer is checked to be even number first
	for( TInt i = 0, limit = aData.Length()-DataVerify::KCharlength; i <= limit; i+=DataVerify::KCharlength )
		{
		// Clean char buffer first
		charBuf.Delete( 0, charBuf.Length() );
		
		// Add KCharlength characters into buffer
		for ( TInt j = 0; j < DataVerify::KCharlength; j++ )
			{
			charBuf.Append( aData[i+j] );
			}

		TUint number;
		TLex8 converter = TLex8( charBuf );
		// Two characters together represent a hex number in MD5 checksum
		User::LeaveIfError( converter.Val( number, EHex ) );

		aDes.Append( number );
		}
	}

void CLinePaginatorTest::OpenTestFileL()
	{
	TBuf8<128> text;
	TInt err=ifsClient.Connect();
	err=iTestFile.Open(ifsClient,TEST_FILE,EFileStream|EFileRead|EFileShareReadersOnly);


	iTestFile.Read(0,text,128);
	TInt startNum=text.Locate('<')+1;
	text.Delete(0,startNum);
	TLex8 lex=text;
	TInt pageHeight;
	lex.Val(pageHeight);
	iPaginator.SetPageHeight(pageHeight);

	TBuf<254> buf;
	buf.AppendFormat(_L("DocPos\tHeight\tKeep\tStart\tHeight of Pages = <%d>\n"), pageHeight);
	TESTPRINT(buf);
	}

void CDummyCalendarApp::Add3ReminderAnd1ApptL()
	{
	test.Next(_L("Create some entries including day note and delete them"));


//Create entries	
	iEntries.ResetAndDestroy();
	//create reminder 1
	TBuf8<255> buf;
	buf.Append(_L("GuidId_Reminder_1"));
	HBufC8* guid = buf.AllocLC();
	CCalEntry* reminder1 = CCalEntry::NewL(CCalEntry::EReminder, guid, CCalEntry::EMethodAdd, 0);
	CleanupStack::Pop(guid);
	iEntries.AppendL(reminder1);

	TCalTime starttime;
	starttime.SetTimeLocalL(TDateTime(2006, EMarch, 5, 0, 0, 0, 0));
	reminder1->SetStartAndEndTimeL(starttime, starttime);

	TBuf<50> summary;
	RandomText(summary);
	reminder1->SetSummaryL(summary);

	//create reminder 2
	buf.Delete(buf.Length()-1,1);
	buf.Append(2);
	guid = buf.AllocLC();
	CCalEntry* reminder2 = CCalEntry::NewL(CCalEntry::EReminder, guid, CCalEntry::EMethodAdd, 0);
	CleanupStack::Pop(guid);
	iEntries.AppendL(reminder2);
	starttime.SetTimeLocalL(TDateTime(2006, EMarch, 6, 0, 0, 0, 0));
	reminder2->SetStartAndEndTimeL(starttime, starttime);
	RandomText(summary);
	reminder2->SetSummaryL(summary);

	//create reminder 3
	buf.Delete(buf.Length()-1,1);
	buf.Append(3);
	guid = buf.AllocLC();
	CCalEntry* reminder3 = CCalEntry::NewL(CCalEntry::EReminder, guid, CCalEntry::EMethodAdd, 0);
	CleanupStack::Pop(guid);
	iEntries.AppendL(reminder3);
	starttime.SetTimeLocalL(TDateTime(2006, EMarch, 7, 0, 0, 0, 0));
	reminder3->SetStartAndEndTimeL(starttime, starttime);
	RandomText(summary);
	reminder3->SetSummaryL(summary);
	
	//Create appt
	buf.Zero();
	buf.Append(_L("GuidId_Appt"));
	guid = buf.AllocLC();
	CCalEntry* appt = CCalEntry::NewL(CCalEntry::EAppt, guid, CCalEntry::EMethodAdd, 0);
	CleanupStack::Pop(guid);
	iEntries.AppendL(appt);
	
	starttime.SetTimeLocalL(TDateTime(2006, EMarch, 7, 14, 0, 0, 0));
	TTime endtimetime(TDateTime(2006, EMarch, 7, 14, 0, 0, 0));
	endtimetime +=TTimeIntervalHours(1);
	TCalTime endtime;
	endtime.SetTimeLocalL(endtimetime);
	appt->SetStartAndEndTimeL(starttime, endtime);

	RandomText(summary);
	appt->SetSummaryL(summary);

//store 4 entries
	TInt entriesStored(0);
	SynCGetEntryViewL().StoreL(iEntries, entriesStored); 
	test(entriesStored == 4);
	iEntries.ResetAndDestroy();
	}

void CRawIP2Flow::StartFlowL()
/**
 * Starts the Flow up. This process involves connecting to the BCA.  
 *
 * Called in response to corresponding SCPR message.
 *
 * @return Allways KErrNone
 */
	{
	ASSERT(iStarting==EFalse);
	iStarting = ETrue;
	OstTraceDef1(OST_TRACE_CATEGORY_DEBUG, TRACE_INTERNALS, CRAWIP2FLOW_STARTFLOWL_1, "CRawIP2Flow %08x:\tStartFlowL()", this);

	// If there were any errors during earlier processing of the ProvisionConfig message
	// then send an Error message in response to the StartFlow (because ProvisionConfig
	// does not have a response code).
	if (iProvisionError != KErrNone)
		{
		User::Leave(iProvisionError);
		}

	// Retrieve Agent provisioned information only available at StartFlow time
	DynamicProvisionConfigL();
	InitialiseL();
	
	// associate the binder object with the lowersender
	iBinder->SetSender(&(iBcaController->Bca()->GetSender()));
	//the name calculation should be done only if logging is enabled
#if (OST_TRACE_CATEGORY & OST_TRACE_CATEGORY_DEBUG)
	const TUint KModemNameLen = KCommsDbSvrMaxColumnNameLength + 10;  // need enough for ppp-XXX.txt - e.g. ppp-comm-1.txt, ppp-btcomm-10.txt etc
	TBuf8<KModemNameLen> modemName;

	_LIT8(KDoubleColon, "::");

	modemName.Copy(iBCAProvisionConfig->GetPortName());
	const TInt pos = modemName.FindC((const TDesC8&)KDoubleColon);
	if(pos != KErrNotFound)
		{
		modemName.Delete(pos, 2);
		}

	//append time stamp
	const TUint KTimeStampLen = 8;
	TBuf8<KTimeStampLen> logFileName;

	_LIT8(KTimeFormat, "%08X");
	TUint32 counter = User::FastCounter();
	logFileName.Format(KTimeFormat, counter);

	
	const TUint KLogTextLen = KModemNameLen+KTimeStampLen+30;
	TBuf8<KLogTextLen> logText;
	_LIT8(KLogTimeText, "TcpDump log file time stamp:");
	_LIT8(KLogModemText, " for modem:");
	logText.Append(KLogTimeText);
	logText.Append(logFileName);
	logText.Append(KLogModemText);
	logText.Append(modemName);
	OstTraceDef0(OST_TRACE_CATEGORY_DEBUG, TRACE_INTERNALS, CRAWIP2FLOW_STARTFLOWL_3, logText);
#endif
	}