public string Journal; // Name of the journal file
internal RC CreateFile()
{
RC rc = RC.OK;
if (Real == null)
{
VFile real = null;
VSystem.OPEN dummy;
rc = Vfs.Open(Journal, Real, Flags, out dummy);
if (rc == RC.OK)
{
Real = real;
if (Size > 0)
{
Debug.Assert(Size <= BufferLength);
rc = Real.Write(Buffer, Size, 0);
}
if (rc != RC.OK)
{
// If an error occurred while writing to the file, close it before returning. This way, SQLite uses the in-memory journal data to
// roll back changes made to the internal page-cache before this function was called.
Real.Close();
Real = null;
}
}
}
return(rc);
}
public override RC Write(byte[] buffer, int amount, long offset)
{
RC rc = RC.OK;
if (Real != null && (offset + amount) > BufferLength)
{
rc = CreateFile();
}
if (rc == RC.OK)
{
if (Real != null)
{
return(Real.Write(buffer, amount, offset));
}
System.Buffer.BlockCopy(Buffer, (int)offset, buffer, 0, amount);
if (Size < (offset + amount))
{
Size = (int)(offset + amount);
}
}
return(rc);
}
internal RC CreateFile()
{
RC rc = RC.OK;
if (Real == null)
{
VFile real = null;
VSystem.OPEN dummy;
rc = Vfs.Open(Journal, Real, Flags, out dummy);
if (rc == RC.OK)
{
Real = real;
if (Size > 0)
{
Debug.Assert(Size <= BufferLength);
rc = Real.Write(Buffer, Size, 0);
}
if (rc != RC.OK)
{
// If an error occurred while writing to the file, close it before returning. This way, SQLite uses the in-memory journal data to
// roll back changes made to the internal page-cache before this function was called.
Real.Close();
Real = null;
}
}
}
return rc;
}
