int CLogFile::FindNextWriteCommand(int iIndex)
{
int i;
CLogFileCommand* psCommand;
int iNumWrites;
CLogFileCommandOpen* psOpen;
BOOL bFoundWriteOpen;
iNumWrites = 0;
bFoundWriteOpen = FALSE;
for (i = iIndex; i < macCommands.NumElements(); i++)
{
psCommand = (CLogFileCommand*)macCommands.Get(i);
if (psCommand->IsOpen())
{
psOpen = (CLogFileCommandOpen*)psCommand;
if (IsFileModeWritable(psOpen->eMode))
{
bFoundWriteOpen = TRUE;
}
}
else if (psCommand->IsWrite() && bFoundWriteOpen)
{
return i;
}
else if (bFoundWriteOpen)
{
bFoundWriteOpen = FALSE;
}
}
return -1;
}
//////////////////////////////////////////////////////////////////////////
// //
// //
//////////////////////////////////////////////////////////////////////////
BOOL CMemoryFile::Open(EFileMode eFileMode)
{
if (IsFileModeWritable(eFileMode))
{
mbFakeArray = FALSE;
iFlags = MEMORY_FILE_READ_FLAG | MEMORY_FILE_WRITE_FLAG;
if (miInitialLength != 0)
{
cArray.InsertBlockAt((char*)mpvInitialMem, miInitialLength, 0);
}
iPos = 0;
}
else if (IsFileModeReadOnly(eFileMode))
{
mbFakeArray = TRUE;
iFlags = MEMORY_FILE_READ_FLAG;
if (miInitialLength != 0)
{
cArray.ReInit();
cArray.Fake((char*)mpvInitialMem, miInitialLength);
}
iPos = 0;
}
else
{
return FALSE;
}
mbOpen = TRUE;
return TRUE;
}
filePos CLogFile::Write(const void* pvSource, filePos iSize, filePos iCount)
{
CArrayIntAndPointer apvOverlapping;
BOOL bAny;
filePos iByteLength;
CLogFileCommandWrite* pcWrite;
if (IsFileModeWritable(meFileMode))
{
mbTouched = TRUE;
iByteLength = iSize * iCount;
if (miLastWriteOpenIndex == -1)
{
bAny = FALSE;
}
else
{
bAny = FindTouchingWriteCommands(miLastWriteOpenIndex + 1, &apvOverlapping, miPosition, iByteLength, FALSE);
}
if (bAny)
{
AmalgamateOverlappingWrites(&apvOverlapping, pvSource, miPosition, iByteLength);
apvOverlapping.Kill();
miPosition += iByteLength;
}
else
{
pcWrite = AddWriteCommand(miPosition, (void*)pvSource, iByteLength);
if (!pcWrite)
{
return 0;
}
miPosition += iByteLength;
}
UpdateLength();
return iCount;
}
else
{
return 0;
}
}
BOOL CLogFile::Open(EFileMode eFileMode)
{
if (!AddOpenCommand(eFileMode))
{
meFileMode = EFM_Unknown;
return FALSE;
}
if (IsFileModeWritable(eFileMode))
{
miLastWriteOpenIndex = macCommands.NumElements()-1;
}
else
{
miLastWriteOpenIndex = -1;
}
meFileMode = eFileMode;
miPosition = 0;
return TRUE;
}
