/// <summary> Package protected function which gets the real internal sheet index
/// based upon the external sheet reference. This is used for extern sheet
/// references which are specified in formulas
///
/// </summary>
/// <param name="index">the external sheet reference
/// </param>
/// <returns> the actual sheet index
/// </returns>
public virtual int getExternalSheetIndex(int index)
{
// For biff7, the whole external reference thing works differently
// Hopefully for our purposes sheet references will all be local
if (workbookBof.isBiff7())
{
return(index);
}
Assert.verify(externSheet != null);
int firstTab = externSheet.getFirstTabIndex(index);
return(firstTab);
}
/// <summary> Does the hard work of building up the object graph from the excel bytes
///
/// </summary>
/// <exception cref=""> BiffException
/// </exception>
/// <exception cref=""> PasswordException if the workbook is password protected
/// </exception>
protected internal override void parse()
{
Record r = null;
BOFRecord bof = new BOFRecord(excelFile.next());
workbookBof = bof;
bofs++;
if (!bof.isBiff8() && !bof.isBiff7())
{
throw new BiffException(BiffException.unrecognizedBiffVersion);
}
if (!bof.isWorkbookGlobals())
{
throw new BiffException(BiffException.expectedGlobals);
}
ArrayList continueRecords = new ArrayList();
nameTable = new ArrayList();
// Skip to the first worksheet
while (bofs == 1)
{
r = excelFile.next();
if (r.Type == NExcel.Biff.Type.SST)
{
continueRecords.Clear();
Record nextrec = excelFile.peek();
while (nextrec.Type == NExcel.Biff.Type.CONTINUE)
{
continueRecords.Add(excelFile.next());
nextrec = excelFile.peek();
}
// cast the array
System.Object[] rec = continueRecords.ToArray();
Record[] records = new Record[rec.Length];
Array.Copy(rec, 0, records, 0, rec.Length);
sharedStrings = new SSTRecord(r, records, settings);
}
else if (r.Type == NExcel.Biff.Type.FILEPASS)
{
throw new PasswordException();
}
else if (r.Type == NExcel.Biff.Type.NAME)
{
NameRecord nr = null;
if (bof.isBiff8())
{
nr = new NameRecord(r, settings, namedRecords.Count);
}
else
{
nr = new NameRecord(r, settings, namedRecords.Count, NameRecord.biff7);
}
namedRecords[nr.Name] = nr;
nameTable.Add(nr);
}
else if (r.Type == NExcel.Biff.Type.FONT)
{
FontRecord fr = null;
if (bof.isBiff8())
{
fr = new FontRecord(r, settings);
}
else
{
fr = new FontRecord(r, settings, FontRecord.biff7);
}
fonts.addFont(fr);
}
else if (r.Type == NExcel.Biff.Type.PALETTE)
{
NExcel.Biff.PaletteRecord palette = new NExcel.Biff.PaletteRecord(r);
formattingRecords.Palette = palette;
}
else if (r.Type == NExcel.Biff.Type.NINETEENFOUR)
{
NineteenFourRecord nr = new NineteenFourRecord(r);
nineteenFour = nr.is1904();
}
else if (r.Type == NExcel.Biff.Type.FORMAT)
{
FormatRecord fr = null;
if (bof.isBiff8())
{
fr = new FormatRecord(r, settings, FormatRecord.biff8);
}
else
{
fr = new FormatRecord(r, settings, FormatRecord.biff7);
}
try
{
formattingRecords.addFormat(fr);
}
catch (NumFormatRecordsException e)
{
// This should not happen. Bomb out
// Assert.verify(false, e.getMessage());
Assert.verify(false, "This should not happen. 64");
}
}
else if (r.Type == NExcel.Biff.Type.XF)
{
XFRecord xfr = null;
if (bof.isBiff8())
{
xfr = new XFRecord(r, XFRecord.biff8);
}
else
{
xfr = new XFRecord(r, XFRecord.biff7);
}
try
{
formattingRecords.addStyle(xfr);
}
catch (NumFormatRecordsException e)
{
// This should not happen. Bomb out
// Assert.verify(false, e.getMessage());
Assert.verify(false, "This should not happen. 59");
}
}
else if (r.Type == NExcel.Biff.Type.BOUNDSHEET)
{
BoundsheetRecord br = null;
if (bof.isBiff8())
{
br = new BoundsheetRecord(r);
}
else
{
br = new BoundsheetRecord(r, BoundsheetRecord.biff7);
}
if (br.isSheet() || br.Chart)
{
boundsheets.Add(br);
}
}
else if (r.Type == NExcel.Biff.Type.EXTERNSHEET)
{
if (bof.isBiff8())
{
externSheet = new ExternalSheetRecord(r, settings);
}
else
{
externSheet = new ExternalSheetRecord(r, settings, ExternalSheetRecord.biff7);
}
}
else if (r.Type == NExcel.Biff.Type.CODEPAGE)
{
CodepageRecord cr = new CodepageRecord(r);
settings.CharacterSet = cr.CharacterSet;
}
else if (r.Type == NExcel.Biff.Type.SUPBOOK)
{
SupbookRecord sr = new SupbookRecord(r, settings);
supbooks.Add(sr);
}
else if (r.Type == NExcel.Biff.Type.PROTECT)
{
ProtectRecord pr = new ProtectRecord(r);
wbProtected = pr.IsProtected();
}
else if (r.Type == NExcel.Biff.Type.MSODRAWINGGROUP)
{
msoDrawingGroup = new MsoDrawingGroupRecord(r);
if (drawingGroup == null)
{
drawingGroup = new DrawingGroup(DrawingGroup.READ);
}
drawingGroup.add(msoDrawingGroup);
Record nextrec = excelFile.peek();
while (nextrec.Type == NExcel.Biff.Type.CONTINUE)
{
drawingGroup.add(excelFile.next());
nextrec = excelFile.peek();
}
}
else if (r.Type == NExcel.Biff.Type.EOF)
{
bofs--;
}
}
bof = null;
if (excelFile.hasNext())
{
r = excelFile.next();
if (r.Type == NExcel.Biff.Type.BOF)
{
bof = new BOFRecord(r);
}
}
// Only get sheets for which there is a corresponding Boundsheet record
while (bof != null && NumberOfSheets < boundsheets.Count)
{
if (!bof.isBiff8() && !bof.isBiff7())
{
throw new BiffException(BiffException.unrecognizedBiffVersion);
}
if (bof.isWorksheet())
{
// Read the sheet in
SheetImpl s = new SheetImpl(excelFile, sharedStrings, formattingRecords, bof, workbookBof, nineteenFour, this);
BoundsheetRecord br = (BoundsheetRecord)boundsheets[NumberOfSheets];
s.setName(br.Name);
s.Hidden = br.isHidden();
addSheet(s);
}
else if (bof.isChart())
{
// Read the sheet in
SheetImpl s = new SheetImpl(excelFile, sharedStrings, formattingRecords, bof, workbookBof, nineteenFour, this);
BoundsheetRecord br = (BoundsheetRecord)boundsheets[NumberOfSheets];
s.setName(br.Name);
s.Hidden = br.isHidden();
addSheet(s);
}
else
{
logger.warn("BOF is unrecognized");
while (excelFile.hasNext() && r.Type != NExcel.Biff.Type.EOF)
{
r = excelFile.next();
}
}
// The next record will normally be a BOF or empty padding until
// the end of the block is reached. In exceptionally unlucky cases,
// the last EOF will coincide with a block division, so we have to
// check there is more data to retrieve.
// Thanks to liamg for spotting this
bof = null;
if (excelFile.hasNext())
{
r = excelFile.next();
if (r.Type == NExcel.Biff.Type.BOF)
{
bof = new BOFRecord(r);
}
}
}
}