private Biff GetCorrectRecord(GenericBiff record, Stream stream, SstRecord sst)
{
Biff ret = record;
switch (record.Id)
{
case (ushort)RecordType.Bof:
BofRecord bof = new BofRecord(record);
if (bof.Version < 0x0600)
{
throw new Exception("Versions below Excel 97/2000 are currently not supported.");
}
ret = bof;
break;
case (ushort)RecordType.Boundsheet:
ret = new BoundSheetRecord(record);
break;
case (ushort)RecordType.Index:
ret = new IndexRecord(record);
break;
case (ushort)RecordType.DbCell:
ret = new DbCellRecord(record);
break;
case (ushort)RecordType.Row:
ret = new RowRecord(record);
break;
case (ushort)RecordType.Continue:
ret = new ContinueRecord(record);
break;
case (ushort)RecordType.Blank:
ret = new BlankRecord(record);
break;
case (ushort)RecordType.BoolErr:
ret = new BoolErrRecord(record);
break;
case (ushort)RecordType.Formula:
ret = new FormulaRecord(record, stream);
break;
case (ushort)RecordType.Label:
ret = new LabelRecord(record);
break;
case (ushort)RecordType.LabelSst:
ret = new LabelSstRecord(record, sst);
break;
case (ushort)RecordType.MulBlank:
ret = new MulBlankRecord(record);
break;
case (ushort)RecordType.MulRk:
ret = new MulRkRecord(record);
break;
case (ushort)RecordType.String:
ret = new StringValueRecord(record);
break;
case (ushort)RecordType.Xf:
ret = new XfRecord(record);
break;
case (ushort)RecordType.Rk:
ret = new RkRecord(record);
break;
case (ushort)RecordType.Number:
ret = new NumberRecord(record);
break;
case (ushort)RecordType.Array:
ret = new ArrayRecord(record);
break;
case (ushort)RecordType.ShrFmla:
ret = new SharedFormulaRecord(record);
break;
case (ushort)RecordType.Table:
ret = new TableRecord(record);
break;
case (ushort)RecordType.Sst:
ret = new SstRecord(record, stream);
break;
case (ushort)RecordType.Eof:
ret = new EofRecord(record);
break;
case (ushort)RecordType.Font:
ret = new FontRecord(record);
break;
case (ushort)RecordType.Format:
ret = new Net.SourceForge.Koogra.Excel.Records.FormatRecord(record);
break;
case (ushort)RecordType.Palette:
ret = new PaletteRecord(record);
break;
case (ushort)RecordType.Hyperlink:
ret = new HyperLinkRecord(record);
break;
}
return(ret);
}
private void Load(CompoundFile doc)
{
Stream stream;
try
{
// see if workbook works
stream = doc.OpenStream("Workbook");
}
catch (IOException)
{
// see if book works, if not then leak the exception
stream = doc.OpenStream("Book");
}
SstRecord sst = null;
long sstPos = 0;
// record position dictionary
SortedList <long, Biff> records = new SortedList <long, Biff>();
_styles = new StyleCollection(this);
_formats = new FormatCollection(this);
_fonts = new FontCollection(this);
_palette = new Palette(this);
_hyperLinks = new HyperLinkCollection(this);
while (stream.Length - stream.Position >= GenericBiff.MinimumSize)
{
// capture the current stream position
long pos = stream.Position;
// decode the record if possible
Biff record = GetCorrectRecord(new GenericBiff(stream), stream, sst);
// capture
// shared string table
if (record is SstRecord)
{
Debug.Assert(sst == null);
sst = (SstRecord)record;
sstPos = pos;
}
// formatting records
else if (record is FormatRecord)
{
FormatRecord f = (FormatRecord)record;
_formats.Add(f.Index, new Format(this, f));
}
else if (record is FontRecord)
{
_fonts.Add(new Font(this, (FontRecord)record));
}
else if (record is PaletteRecord)
{
_palette.Initialize((PaletteRecord)record);
}
else if (record is XfRecord)
{
_styles.Add(new Style(this, (XfRecord)record));
}
else if (record is HyperLinkRecord)
{
_hyperLinks.Add((HyperLinkRecord)record);
}
Debug.Assert(!records.ContainsKey(pos));
// store the position and corresponding record
records[pos] = record;
}
// generate the worksheets
_sheets = new WorksheetCollection();
foreach (Biff record in records.Values)
{
if (record is BoundSheetRecord)
{
_sheets.Add(new Worksheet(this, (BoundSheetRecord)record, records));
}
}
}
internal Worksheet(Workbook wb, BoundSheetRecord sheet, SortedList <long, Biff> records)
: base(wb)
{
_name = sheet.Name;
int idx = records.IndexOfKey((long)sheet.BofPos);
_hyperlinks = new HyperLinkCollection(wb);
for (int i = idx + 1; i < records.Count; ++i)
{
Biff biff = records.Values[i];
if (biff is HyperLinkRecord)
{
_hyperlinks.Add((HyperLinkRecord)biff);
}
else if (biff is EofRecord)
{
break;
}
}
BofRecord bof = (BofRecord)records.Values[idx++];
Biff seeker = records.Values[idx++];
while (!(seeker is IndexRecord))
{
seeker = records.Values[idx++];
}
IndexRecord index = (IndexRecord)seeker;
_rows = new RowCollection(wb);
foreach (uint indexPos in index.Rows)
{
long dbCellPos = indexPos;
int dbCellIdx = records.IndexOfKey(dbCellPos);
DbCellRecord dbCell = (DbCellRecord)records[dbCellPos];
if (dbCell.RowOffset > 0)
{
long rowPos = dbCellPos - dbCell.RowOffset;
int recIndex = records.IndexOfKey(rowPos);
Debug.Assert(recIndex != -1);
Biff record = records.Values[recIndex++];
while (record is RowRecord)
{
RowRecord row = (RowRecord)record;
Row currentRow = new Row(Workbook, row);
_rows.Add(row.RowNumber, currentRow);
record = records.Values[recIndex++];
}
while (recIndex <= dbCellIdx)
{
if (!(record is CellRecord))
{
record = records.Values[recIndex++];
continue;
}
CellRecord thecell = (CellRecord)record;
Row currentRow = _rows[thecell.Row];
if (thecell is SingleColCellRecord)
{
SingleColCellRecord cell = (SingleColCellRecord)thecell;
object val = cell.Value;
Cell newCell = new Cell(Workbook, val);
if (cell is RowColXfCellRecord)
{
RowColXfCellRecord xfCell = (RowColXfCellRecord)cell;
Style style = Workbook.Styles[xfCell.Xf];
Debug.Assert(style != null);
newCell.Style = style;
}
currentRow.Cells.Add((byte)cell.Col, newCell);
}
else
{
MultipleColCellRecord cells = (MultipleColCellRecord)thecell;
for (ushort i = cells.FirstCol; i <= cells.LastCol; ++i)
{
object val = cells.GetValue(i);
if (val != null)
{
Cell newCell = null;
if (val is RkRec)
{
RkRec rk = (RkRec)val;
newCell = new Cell(Workbook, rk.Value);
Style style = Workbook.Styles[rk.Xf];
Debug.Assert(style != null);
newCell.Style = style;
}
else
{
newCell = new Cell(Workbook, val);
}
currentRow.Cells.Add((byte)i, newCell);
}
}
}
record = records.Values[recIndex++];
}
}
}
}