elog.cpp

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#include "elog.h"
#include <e32test.h>

#if defined (_DEBUG) || defined(__WINS__)

class TLoggerOverflow : public TDes8Overflow
        {
public:
        void Overflow(TDes8& /*aDes*/) {}
        };


//
// local variables
//
_LIT(KTheLogFile, "c:\\sidplaylog.txt");
const TInt KFileOpenWritable = EFileWrite | EFileShareAny;


void CEpocLogger::DoLog(TRefByValue<const TDesC8> aFmt, ...)
        {
        // get the Variable Argument list (...)
        VA_LIST list;
        VA_START(list,aFmt);

        TLoggerOverflow logOverflow;
        TBuf8<256> logBuf;
        logBuf.AppendFormatList(aFmt,list,&logOverflow);

        TInt ret;
        RFs theLogFs;
        RFile theLogFile;

        ret = theLogFs.Connect();
        if( (ret != KErrNone) && (ret != KErrAlreadyExists) )
                return;

        // try to open to old one first
        ret = theLogFile.Open(theLogFs, KTheLogFile, KFileOpenWritable);
        if(ret == KErrNotFound)
                ret = theLogFile.Replace(theLogFs, KTheLogFile, KFileOpenWritable);
        if(ret != KErrNone)
                return;

        TInt pos;
        ret = theLogFile.Seek(ESeekEnd, pos);
        if (ret==KErrNone)
                theLogFile.Write(logBuf);

        theLogFile.Close(); // close it so that 'tail -f logfile.txt' can display changes
        theLogFs.Close();
        }


#endif // _DEBUG

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