/// <summary>
/// Parses file with DV and returns Virtual Qualitative Sequences list.
/// </summary>
/// <param name="isReadOnly">Flag to indicate whether the sequences returned should be set to readonly or not.</param>
private VirtualQualitativeSequenceList ParseWithDV(bool isReadOnly)
{
SidecarFileProvider sidecarFileProvider = null;
sidecarFileProvider = new SidecarFileProvider(_fileName);
sidecarFileProvider.Close();
// if valid sidecar file exists
if (sidecarFileProvider.IsSidecarValid)
{
// Create virtual list and return
return(new VirtualQualitativeSequenceList(sidecarFileProvider, this, sidecarFileProvider.Count)
{
CreateSequenceAsReadOnly = isReadOnly
});
}
// else create new sidecar
using (sidecarFileProvider = new SidecarFileProvider(_fileName, true))
{
using (_mbfStreamReader = new MBFStreamReader(_fileName))
{
if (sidecarFileProvider.SidecarFileExists)
{
try
{
while (_mbfStreamReader.HasLines)
{
ParseOne(_mbfStreamReader, isReadOnly);
}
// Create sidecar
sidecarFileProvider.CreateSidecarFile(_mbfStreamReader.FileName, _sequencePointers);
VirtualQualitativeSequenceList virtualSequences =
new VirtualQualitativeSequenceList(sidecarFileProvider, this, _sequencePointers.Count)
{
CreateSequenceAsReadOnly = isReadOnly
};
_sequencePointers.Clear();
return(virtualSequences);
}
catch (Exception)
{
sidecarFileProvider.Cleanup();
}
}
}
}
return(null);
}
