/// <summary>
/// Processes a DocumentInputStream into essentially Record events.
/// If an
/// <c>AbortableHSSFListener</c>
/// causes a halt to Processing during this call
/// the method will return just as with
/// <c>abortableProcessEvents</c>
/// , but no
/// user code or
/// <c>HSSFUserException</c>
/// will be passed back.
/// </summary>
/// <param name="req">an Instance of HSSFRequest which has your registered listeners</param>
/// <param name="in1">a DocumentInputStream obtained from POIFS's POIFSFileSystem object</param>
public void ProcessEvents(HSSFRequest req, Stream in1)
{
try
{
GenericProcessEvents(req, new RecordInputStream(in1));
}
catch (HSSFUserException)
{/*If an HSSFUserException user exception Is thrown, ignore it.*/ }
}
/// <summary>
/// Triggers the extraction.
/// </summary>
/// <returns></returns>
private TextListener TriggerExtraction()
{
TextListener tl = new TextListener(includeSheetNames,formulasNotResults);
FormatTrackingHSSFListener ft = new FormatTrackingHSSFListener(tl);
tl.ft = ft;
// Register and process
HSSFEventFactory factory = new HSSFEventFactory();
HSSFRequest request = new HSSFRequest();
request.AddListenerForAllRecords(ft);
factory.ProcessWorkbookEvents(request, fs);
return tl;
}
/// <summary>
/// Processes a file into essentially record events.
/// </summary>
/// <param name="req">an Instance of HSSFRequest which has your registered listeners</param>
/// <param name="fs">a POIFS filesystem containing your workbook</param>
/// <returns>numeric user-specified result code.</returns>
public short AbortableProcessWorkbookEvents(HSSFRequest req, POIFSFileSystem fs)
{
Stream in1 = fs.CreateDocumentInputStream("Workbook");
return AbortableProcessEvents(req, in1);
}
/// <summary>
/// Processes a file into essentially record events.
/// </summary>
/// <param name="req">an Instance of HSSFRequest which has your registered listeners</param>
/// <param name="fs">a POIFS filesystem containing your workbook</param>
public void ProcessWorkbookEvents(HSSFRequest req, POIFSFileSystem fs)
{
Stream in1 = fs.CreateDocumentInputStream("Workbook");
ProcessEvents(req, in1);
}
/// <summary>
/// Processes a DocumentInputStream into essentially Record events.
/// </summary>
/// <param name="req">an Instance of HSSFRequest which has your registered listeners</param>
/// <param name="in1">a DocumentInputStream obtained from POIFS's POIFSFileSystem object</param>
/// <returns>numeric user-specified result code.</returns>
protected short GenericProcessEvents(HSSFRequest req, RecordInputStream in1)
{
bool going = true;
short userCode = 0;
Record r = null;
// Create a new RecordStream and use that
HSSFRecordStream recordStream = new HSSFRecordStream(in1);
// Process each record as they come in
while (going)
{
r = recordStream.NextRecord();
if (r != null)
{
userCode = req.ProcessRecord(r);
if (userCode != 0) break;
}
else
{
going = false;
}
}
// All done, return our last code
return userCode;
}
/// <summary>
/// Processes a DocumentInputStream into essentially Record events.
/// </summary>
/// <param name="req">an Instance of HSSFRequest which has your registered listeners</param>
/// <param name="in1">a DocumentInputStream obtained from POIFS's POIFSFileSystem object</param>
/// <returns>numeric user-specified result code.</returns>
public short AbortableProcessEvents(HSSFRequest req, Stream in1)
{
return GenericProcessEvents(req, new RecordInputStream(in1));
}
