/*

* Copyright (c) 2010 Ixonos Plc.

* All rights reserved.

* This component and the accompanying materials are made available

* under the terms of the "Eclipse Public License v1.0"

* which accompanies this distribution, and is available

* at the URL "http://www.eclipse.org/legal/epl-v10.html".

*

* Initial Contributors:

* Nokia Corporation - Initial contribution

*

* Contributors:

* Ixonos Plc

*

* Description:  

*

*/

#include <hal.h>

#include <charconv.h>

#include "logfile.h"

#include "logfilepanics.h"

_LIT8(KCrLf8, "\r\n");

_LIT(KCrLf, "\r\n");

const TInt KAsciiStart = 0x20;

const TInt KAsciiEnd = 0x7f;

const TInt KHexCharLeft = '<';

const TInt KHexCharRight = '>';

const TInt KNumberOfDecimalPlaces = 3;

CLogFile* CLogFile::NewL(const TDesC& aFileName, TBool aInitialiseLog)

    {

    CLogFile* self = NewLC(aFileName, aInitialiseLog);

    CleanupStack::Pop();

    return(self);

    }

CLogFile* CLogFile::NewLC(const TDesC& aFileName, TBool aInitialiseLog)

    {

    CLogFile* self = new (ELeave) CLogFile();

    CleanupStack::PushL(self);

    self->ConstructL(aFileName, aInitialiseLog);

    return(self);

    }

CLogFile::CLogFile()

    {

    // No implementation required

    }

CLogFile::~CLogFile()

    {

    iLogFile.Flush();

    iLogFile.Close();

    iSession.Close();

    delete iCharacterConverter;

    iCharacterConverter = NULL;

    }

void CLogFile::ConstructL(const TDesC& aFileName, TBool aInitialiseLog)

    {

    TInt period;

    User::LeaveIfError(HAL::Get(HALData::ESystemTickPeriod, period));

    iLogMillisecsPerTick = period / 1000;

    if (iLogMillisecsPerTick == 0)

        {

        iLogMillisecsPerTick = 1;

        }

    User::LeaveIfError(iSession.Connect());

    if (aInitialiseLog)

        {

        User::LeaveIfError(iLogFile.Replace(iSession, aFileName, EFileShareExclusive));

        }

    else

        {

        TInt err = iLogFile.Open(iSession, aFileName, EFileShareExclusive | EFileWrite);

        switch (err)

            {

            case KErrNone: // Opened ok, so seek to end of file

                {

                TInt position = 0;

                User::LeaveIfError(iLogFile.Seek(ESeekEnd, position));

                }

                break;

            case KErrNotFound: // File doesn't exist, so create it

                User::LeaveIfError(iLogFile.Create(iSession, aFileName, EFileShareExclusive | EFileWrite));

                break;

            default: // Unexepected error

                User::Leave(err);

                break;

            }

        }

    // Create character converter

    iCharacterConverter = CCnvCharacterSetConverter::NewL();

//    CCnvCharacterSetConverter::TAvailability iConverterAvailability;

    iConverterAvailability = iCharacterConverter->PrepareToConvertToOrFromL(KCharacterSetIdentifierAscii, iSession);

    }

void CLogFile::LogTime()

    {

    StartWrite();

    LogTimeInternal();

    EndWrite();

    }

void CLogFile::Log(const TDesC8& aText)

    {

    StartWrite();

    LogTextInternal(aText);

    EndWrite();

    }

void CLogFile::Log(const TDesC& aText)

    {

    StartWrite();

    for (TInt i = 0; i < aText.Length(); i++)

        {

        if (aText.Mid(i).Find(KCrLf) == 0)

            {

            LogNewline();

            i++;

            }

        else if (iConverterAvailability == CCnvCharacterSetConverter::EAvailable)

            {

            // Convert character from unicode

            TBuf<1> unicodeBuffer;

            TBuf8<10> asciiBuffer;

            unicodeBuffer.Append(aText[i]);

            TInt status = iCharacterConverter->ConvertFromUnicode(asciiBuffer, unicodeBuffer);

            if (status >= 0)

                {

                LogTextInternal(asciiBuffer);

                }

            }

        else // character converter not available

            {

                TBuf8<1> asciiBuffer;

                asciiBuffer.Append(static_cast<TUint8>(aText[i]));

                LogTextInternal(asciiBuffer);

            }

        }

    EndWrite();

    }

void CLogFile::Log(TUint8 aByte)

    {

    StartWrite();

    LogByteInternal(aByte);

    EndWrite();        

    }

void CLogFile::Log(TUint aNumber)

    {

    StartWrite();

    LogIntInternal(aNumber);

    EndWrite();        

    }

void CLogFile::LogBytes(const TDesC8& aBuffer, TBool fastWrite)

    {

    StartWrite();

    if(fastWrite)

      Write(aBuffer);

    else

    {

      for (TInt i = 0; i < aBuffer.Length(); i++)

      {

        LogByteInternal(aBuffer[i], ETrue);

      }

    }

    EndWrite();

    }

void CLogFile::LogTimeInternal()

    {

    TBuf8<50> text;

    TInt timeInMillisecs = User::TickCount() * iLogMillisecsPerTick;

    TInt secs = timeInMillisecs / 1000;

    TInt millisecs = timeInMillisecs % 1000;

    text.Num(secs);

    text.Append('.');

    Write(text);

    text.Num(millisecs);

    while (text.Length() < KNumberOfDecimalPlaces)

        {

        text.Insert(0, _L8("0"));

        }

    text.Append('-');

    Write(text);

    }

void CLogFile::LogTextInternal(const TDesC8& aText)

    {

    TPtrC8 tail(aText.Ptr(), aText.Length());

    TInt newLinePosition = tail.Find(KCrLf8);

    while (newLinePosition != KErrNotFound)

        {

        if (newLinePosition > 0)

            {

            Write(tail.Left(newLinePosition));

            tail.Set(aText.Ptr() + newLinePosition, tail.Length() - newLinePosition);

            }

        LogNewline();

        tail.Set(aText.Ptr() + KCrLf8.iTypeLength, tail.Length() - KCrLf8.iTypeLength);

        newLinePosition = tail.Find(KCrLf8);

        }

    //    No more newlines left so print remainder

    Write(tail);

    }

void CLogFile::LogByteInternal(TUint8 aByte, TBool acsiiMode)

    {

    if ((aByte >= KAsciiStart) && (aByte < KAsciiEnd) || acsiiMode)

        {

        // Display as ASCII char

        TBuf8<1> str;

        str.Append(aByte);

        Write(str);

        }

    else

        {

        // Display as hex number

        TBuf8<4> str;

        str.Append(KHexCharLeft);

        str.AppendNum(static_cast<TUint>(aByte), EHex);

        str.Append(KHexCharRight);

        Write(str);

        }

    }

void CLogFile::LogIntInternal(TUint aNumber)

    {

    // Display as ASCII char

    TBuf8<20> str;

    str.Append(KHexCharLeft);

    str.AppendNum(aNumber/*, EHex*/);

    str.Append(KHexCharRight);

    Write(str);

    }

void CLogFile::LogNewline()

    {

    Write(KCrLf8);

    if (iAutoTimestamp)

        {

        LogTimeInternal();

        }

    }

void CLogFile::StartWrite()

    {

    ASSERT(iCheckNestDepth == 0);

    iCheckNestDepth++;

    if (iAutoNewline)

        {

        LogNewline();

        }

    }

void CLogFile::EndWrite()

    {

    if (iAutoFlush)

        {

        iLogFile.Flush();

        }

    iCheckNestDepth--;

    ASSERT(iCheckNestDepth == 0);

    }

void CLogFile::Write(const TDesC8& aText)

    {

    if (iLogFile.Write(aText) != KErrNone)

        {

        //  As the framework may be trapping User::Panic we need to

        //  produce the panic at a lower level.

        RThread().Panic(KLogFilePanic, TLogFileWriteFailed);

        }

    }

void CLogFile::SetAutoFlush(TBool aOn)

    {

    iAutoFlush = aOn;

    }

void CLogFile::SetAutoTimeStamp(TBool aOn)

    {

    iAutoTimestamp = aOn;

    }

void CLogFile::SetAutoNewline(TBool aOn)

    {

    iAutoNewline = aOn;

    }

void CLogFile::StaticLogL(const TDesC& aFileName, const TDesC8& aText)

    {

    CLogFile* logFile = NewLC(aFileName, EFalse);

    logFile->Log(aText);

    CleanupStack::Pop(logFile);

    delete logFile;

    }

void CLogFile::StaticLogL(const TDesC& aFileName, const TDesC& aText)

    {

    CLogFile* logFile = NewLC(aFileName, EFalse);

    logFile->Log(aText);

    CleanupStack::Pop(logFile);

    delete logFile;

    }