author | Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com> |
Tue, 02 Feb 2010 02:01:42 +0200 | |
changeset 0 | e4d67989cc36 |
child 25 | 7701629b34a6 |
permissions | -rw-r--r-- |
0
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// Copyright (c) 2006-2009 Nokia Corporation and/or its subsidiary(-ies). |
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// All rights reserved. |
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// This component and the accompanying materials are made available |
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// under the terms of "Eclipse Public License v1.0" |
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// which accompanies this distribution, and is available |
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// at the URL "http://www.eclipse.org/legal/epl-v10.html". |
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// |
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// Initial Contributors: |
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// Nokia Corporation - initial contribution. |
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// |
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// Contributors: |
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// |
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// Description: |
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// |
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#include <errno.h> |
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#include "fdesc.h" |
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CRedirDesc::CRedirDesc() : CFileDescBase(O_RDWR) |
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{ |
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iReadNone = EFalse; |
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iWriteNone = EFalse; |
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iStatus = ENotConnected; |
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iLock.CreateLocal(); |
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} |
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// ----------------------------------------------------------------------------- |
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// CRedirDesc::Configure |
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// Implementation for Configure the Media i.e. connect to stdio server |
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// ----------------------------------------------------------------------------- |
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// |
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TInt CRedirDesc::Configure() |
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{ |
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TInt ret; |
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TBuf8<1> aDes; |
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iStatus = ENoServer; |
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ret = iSession.Connect(); |
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if( KErrNone == ret) |
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{ |
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ret = iSession.CheckMedia(aDes); |
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if( KErrNone == ret) |
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{ |
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iStatus = EConnected; |
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//In case both the media is NONE the server would fail the connection and |
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//this block of the code in not executed. If any of media either read or |
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//write in NONE specified in config.ini file then the iReadNone and iWriteNone |
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//flag is set to ETrue which is check in read and write functions. |
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if( !aDes.Compare(_L8("R")) ) |
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{ |
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iReadNone = ETrue; |
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} |
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else |
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{ |
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if( !aDes.Compare(_L8("W")) ) |
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{ |
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iWriteNone = ETrue; |
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} |
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} |
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} |
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} |
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return ret; |
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} |
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// ----------------------------------------------------------------------------- |
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// CRedirDesc::Read |
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// Implementation for Read |
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// ----------------------------------------------------------------------------- |
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// |
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void CRedirDesc::Read(TDes8& aDes, TRequestStatus& aStatus) |
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{ |
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if( ENotConnected == iStatus ) |
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{ |
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iLock.Wait(); |
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if( ENotConnected == iStatus ) |
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{ |
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Configure(); |
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} |
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iLock.Signal(); |
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} |
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if( EConnected == iStatus && !iReadNone ) |
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{ |
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iSession.Read(aStatus, aDes, aDes.MaxLength()); |
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} |
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else |
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{ |
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// If no session is there i.e. no server in production code or in the |
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// config.ini file for the stdioserver the both media type is NONE then |
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// just complete the request with EOF so that libc can handle it. |
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TRequestStatus* status = &aStatus; |
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User::RequestComplete(status, KErrEof); |
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} |
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|
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} |
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|
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|
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TInt CRedirDesc::WriteCompletion(TDes8& aDesc, TInt /*aStatus*/) |
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{ |
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return aDesc.Length(); |
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} |
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|
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TInt CRedirDesc::ReadCompletion(TDes8& aDesc, TInt /*aStatus*/) |
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{ |
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return aDesc.Length(); |
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} |
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|
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// ----------------------------------------------------------------------------- |
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// CRedirDesc::Write |
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// Implementation for Write |
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// ----------------------------------------------------------------------------- |
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// |
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void CRedirDesc::Write(TDes8& aDesc, TRequestStatus& aStatus) |
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{ |
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if( ENotConnected == iStatus ) |
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{ |
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iLock.Wait(); |
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if( ENotConnected == iStatus ) |
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{ |
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Configure(); |
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} |
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iLock.Signal(); |
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} |
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if(EConnected == iStatus && !iWriteNone) |
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{ |
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iSession.Write(aStatus, aDesc, aDesc.Length()); |
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} |
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else |
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{ |
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// If no session is there i.e. no server in production code or the user |
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// has specified the media type in config.ini file as NONE put the write |
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// data in blackhole and just complete the request as done in Read call. |
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TRequestStatus* status = &aStatus; |
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User::RequestComplete(status, KErrNone); |
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} |
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} |
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|
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// ----------------------------------------------------------------------------- |
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// CRedirDesc::Fcntl |
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// Implementation for fcntl |
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// ----------------------------------------------------------------------------- |
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// |
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TInt CRedirDesc::Fcntl(TUint /*anArg*/, TUint aCmd) |
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{ |
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if (aCmd == F_GETFL) |
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{ |
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return iFcntlFlag; |
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} |
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return KErrNotSupported; |
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} |
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|
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// ----------------------------------------------------------------------------- |
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// CRedirDesc::FinalClose |
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// Cleanup function used by FID |
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// ----------------------------------------------------------------------------- |
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// |
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TInt CRedirDesc::FinalClose() |
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{ |
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iSession.Close(); |
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return KErrNone; |
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} |
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|
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// ----------------------------------------------------------------------------- |
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// CRedirDesc::Poll |
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// checks if that aEvents is ready or not. |
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// ----------------------------------------------------------------------------- |
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// |
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TInt CRedirDesc::Poll(TUint aEvents) |
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{ |
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TInt readyEvents = 0; |
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|
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if ((aEvents & EReadyForWriting ) && !iWriteNone) |
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{ |
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readyEvents |= EReadyForWriting; |
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} |
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|
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return readyEvents; |
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} |
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|
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// ----------------------------------------------------------------------------- |
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// CRedirDesc::NotifyActivity |
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// registers a notification for read event i.e. when data is ready for read. |
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// this function is only for reading because poll itself would return for writing |
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// if that media for writing is available. |
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// ----------------------------------------------------------------------------- |
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// |
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TInt CRedirDesc::NotifyActivity(TUint aEvents, TRequestStatus& aRequest, TTimeIntervalMicroSeconds32 /* timeout=0 */) |
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{ |
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if( ENotConnected == iStatus ) |
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{ |
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iLock.Wait(); |
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if( ENotConnected == iStatus ) |
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{ |
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Configure(); |
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} |
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iLock.Signal(); |
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} |
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|
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if(EConnected != iStatus || aEvents & EReadyForWriting || iReadNone ) |
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{ |
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//complete aStatus with KErrNone |
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TRequestStatus* status = &aRequest; |
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User::RequestComplete(status, KErrNone); |
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} |
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|
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if ((aEvents & EReadyForReading) && !iReadNone) |
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{ |
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TInt events = 0; |
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events = EReadyForReading; |
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iSession.NotifyActivity((TInt)events, aRequest); |
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} |
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|
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return KErrNone; |
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} |
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|
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// ----------------------------------------------------------------------------- |
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// CRedirDesc::TweakReadyEvents |
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// Prepares the redir desc specific output events |
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// ----------------------------------------------------------------------------- |
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// |
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TInt CRedirDesc::TweakReadyEvents(TInt errval) |
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{ |
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TInt returnEvents = 0; |
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// This file descriptor is pipe-like |
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if( errval >= KErrNone ) |
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{ |
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returnEvents |= EReadyForReading; |
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returnEvents |= EReadyForWriting; |
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} |
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else |
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{ |
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returnEvents |= EAnyException; |
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} |
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return returnEvents; |
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} |
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|
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// ----------------------------------------------------------------------------- |
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// CRedirDesc::CancelNotify |
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// To cancel notification. |
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// ----------------------------------------------------------------------------- |
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// |
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void CRedirDesc::CancelNotify() |
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{ |
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if ( iSession.Handle() ) |
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{ |
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iSession.CancelNotify(); |
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} |
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} |
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|
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//----------------------------------------------------------------------------- |
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//int CRedirDesc::SetEcho(TBool aEcho) |
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// |
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//Sets the echo flag to the given value. |
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//----------------------------------------------------------------------------- |
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|
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int CRedirDesc::SetEcho(TUint8 aEcho) |
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{ |
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int err = KErrNone; |
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//start the redirection server if not already started... |
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if( ENotConnected == iStatus ) |
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{ |
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iLock.Wait(); |
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Configure(); |
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iLock.Signal(); |
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} |
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//set the echo flag if the connection with the server is successfull... |
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if(EConnected == iStatus) |
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{ |
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err = iSession.SetEcho(aEcho); |
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} |
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else |
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268 |
{ |
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// If no session is there i.e. no server in production code or in the |
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// config.ini file for the stdioserver the both media type is NONE then |
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// just return EOF so that libc can handle it. |
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err = KErrEof; |
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} |
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return err; |
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} |
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|
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|
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// method definitions for CStdErrDesc |
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CStdErrDesc::CStdErrDesc() : CFileDescBase(O_RDWR) |
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{ |
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// nada |
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} |
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|
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// ----------------------------------------------------------------------------- |
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// CStdErrDesc::Write |
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// Implementation for Write |
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// ----------------------------------------------------------------------------- |
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// |
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void CStdErrDesc::Write(TDes8& aDesc, TRequestStatus& aStatus) |
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{ |
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HBufC16* des16 = NULL; |
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TRAPD(err, des16 = HBufC16::NewL(aDesc.Length())); |
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if (err != KErrNone) |
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{ |
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//complete aStatus with that error code |
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TRequestStatus* status = &aStatus; |
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User::RequestComplete(status, err); |
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return; |
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} |
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TPtr16 ptr(des16->Des()); |
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ptr.Copy(aDesc); |
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#ifdef _DEBUG |
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RDebug::RawPrint(*des16); |
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#endif //_DEBUG |
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delete des16; |
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TRequestStatus* status = &aStatus; |
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User::RequestComplete(status, KErrNone); |
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} |
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|
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// ----------------------------------------------------------------------------- |
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// CStdErrDesc::Fcntl |
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// Implementation for fcntl |
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// ----------------------------------------------------------------------------- |
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// |
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TInt CStdErrDesc::Fcntl(TUint /*anArg*/, TUint aCmd) |
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{ |
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if (aCmd == F_GETFL) |
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{ |
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return iFcntlFlag; |
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} |
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return KErrNotSupported; |
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} |
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TInt CStdErrDesc::WriteCompletion(TDes8& aDesc, TInt /*aStatus*/) |
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{ |
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return aDesc.Length(); |
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} |