private void createDataOutput()
{
if (workbookSettings.getUseTemporaryFileDuringWrite())
{
data = new FileDataOutput(workbookSettings.getTemporaryFileDuringWriteDirectory());
}
else
{
initialFileSize = workbookSettings.getInitialFileSize();
arrayGrowSize = workbookSettings.getArrayGrowSize();
data = new MemoryDataOutput(initialFileSize, arrayGrowSize);
}
}
/**
* Constructs a file from the input stream
*
* @param is the input stream
* @param ws the workbook settings
* @exception IOException
* @exception BiffException
*/
public File(Stream input, WorkbookSettings ws)
{
// Initialize the file sizing parameters from the settings
workbookSettings = ws;
initialFileSize = workbookSettings.getInitialFileSize();
arrayGrowSize = workbookSettings.getArrayGrowSize();
byte[] d = new byte[initialFileSize];
int bytesRead = input.Read(d, 0, d.Length);
int pos = bytesRead;
// Handle thread interruptions, in case the user keeps pressing
// the Submit button from a browser. Thanks to Mike Smith for this
// TODO: CML - don't know what to do with this in context of asp.net
//if (Thread.currentThread().isInterrupted())
// {
// throw new InterruptedIOException();
// }
while (bytesRead > 0)
{
if (pos >= d.Length)
{
// Grow the array
byte[] newArray = new byte[d.Length + arrayGrowSize];
System.Array.Copy(d, 0, newArray, 0, d.Length);
d = newArray;
}
bytesRead = input.Read(d, pos, d.Length - pos);
pos += bytesRead;
// TODO: CML - don't know what to do with this in context of asp.net
//if (Thread.currentThread().isInterrupted())
// {
// throw new InterruptedIOException();
// }
}
bytesRead = pos + 1;
// Perform file reading checks and throw exceptions as necessary
if (bytesRead == 0)
{
throw new BiffException(BiffException.excelFileNotFound);
}
CompoundFile cf = new CompoundFile(d, ws);
try
{
data = cf.getStream("workbook");
}
catch (BiffException e)
{
// this might be in excel 95 format - try again
data = cf.getStream("book");
}
if (!workbookSettings.getPropertySetsDisabled() &&
(cf.getNumberOfPropertySets() >
BaseCompoundFile.STANDARD_PROPERTY_SETS.Length))
{
compoundFile = cf;
}
cf = null;
//if (!workbookSettings.getGCDisabled())
// {
// System.gc();
// }
// Uncomment the following lines to send the pure workbook stream
// (ie. a defragged ole stream) to an output file
// FileOutputStream fos = new FileOutputStream("defraggedxls");
// fos.write(data);
// fos.close();
}