private int findFirstDataCellOffset(int startOffset)
{
XlsBiffRecord record = this.m_stream.ReadAt(startOffset);
while (!(record is XlsBiffDbCell))
{
if (this.m_stream.Position >= this.m_stream.Size)
{
return(-1);
}
if (record is XlsBiffEOF)
{
return(-1);
}
record = this.m_stream.Read();
}
XlsBiffDbCell cell = (XlsBiffDbCell)record;
XlsBiffRow row = null;
int rowAddress = cell.RowAddress;
do
{
row = this.m_stream.ReadAt(rowAddress) as XlsBiffRow;
if (row == null)
{
return(rowAddress);
}
rowAddress += row.Size;
}while (row != null);
return(rowAddress);
}
private int findFirstDataCellOffset(int startOffset)
{
//seek to the first dbcell record
var record = m_stream.ReadAt(startOffset);
while (!(record is XlsBiffDbCell))
{
if (m_stream.Position >= m_stream.Size)
{
return(-1);
}
if (record is XlsBiffEOF)
{
return(-1);
}
try
{
record = m_stream.Read();
}
catch
{
return(-2);
}
}
XlsBiffDbCell startCell = (XlsBiffDbCell)record;
XlsBiffRow row = null;
int offs = startCell.RowAddress;
do
{
row = m_stream.ReadAt(offs) as XlsBiffRow;
if (row == null)
{
break;
}
offs += row.Size;
} while (null != row);
return(offs);
}
private int findFirstDataCellOffset(int startOffset)
{
XlsBiffDbCell startCell = (XlsBiffDbCell)m_stream.ReadAt(startOffset);
XlsBiffRow row = null;
int offs = startCell.RowAddress;
do
{
row = m_stream.ReadAt(offs) as XlsBiffRow;
if (row == null)
{
break;
}
offs += row.Size;
} while (null != row);
return(offs);
}
/// <summary>
/// private method, reads sheet data
/// </summary>
/// <param name="sheet">Sheet object, whose data to read</param>
/// <returns>True if sheet was read successfully, otherwise False</returns>
private bool ReadWorksheet(XlsWorksheet sheet)
{
m_stream.Seek((int)sheet.DataOffset, SeekOrigin.Begin);
XlsBiffBOF bof = m_stream.Read() as XlsBiffBOF;
if (bof == null || bof.Type != BIFFTYPE.Worksheet)
{
return(false);
}
XlsBiffIndex idx = m_stream.Read() as XlsBiffIndex;
bool isV8 = (m_version >= 0x600);
if (idx != null)
{
idx.IsV8 = isV8;
DataTable dt = new DataTable(sheet.Name);
XlsBiffRecord trec;
XlsBiffDimensions dims = null;
do
{
trec = m_stream.Read();
if (trec.ID == BIFFRECORDTYPE.DIMENSIONS)
{
dims = (XlsBiffDimensions)trec;
break;
}
}while (trec.ID != BIFFRECORDTYPE.ROW);
int maxCol = 256;
if (dims != null)
{
dims.IsV8 = isV8;
maxCol = dims.LastColumn;
sheet.Dimensions = dims;
}
for (int i = 0; i < maxCol; i++)
{
dt.Columns.Add("Column" + (i + 1).ToString(), typeof(string));
}
sheet.Data = dt;
uint maxRow = idx.LastExistingRow;
if (idx.LastExistingRow <= idx.FirstExistingRow)
{
return(true);
}
dt.BeginLoadData();
for (int i = 0; i <= maxRow; i++)
{
dt.Rows.Add(dt.NewRow());
}
uint[] dbCellAddrs = idx.DbCellAddresses;
for (int i = 0; i < dbCellAddrs.Length; i++)
{
XlsBiffDbCell dbCell = (XlsBiffDbCell)m_stream.ReadAt((int)dbCellAddrs[i]);
XlsBiffRow row = null;
int offs = (int)dbCell.RowAddress;
do
{
row = m_stream.ReadAt(offs) as XlsBiffRow;
if (row == null)
{
break;
}
offs += row.Size;
}while (row != null);
while (true)
{
XlsBiffRecord rec = m_stream.ReadAt(offs);
offs += rec.Size;
if (rec is XlsBiffDbCell)
{
break;
}
if (rec is XlsBiffEOF)
{
break;
}
XlsBiffBlankCell cell = rec as XlsBiffBlankCell;
if (cell == null)
{
continue;
}
if (cell.ColumnIndex >= maxCol)
{
continue;
}
if (cell.RowIndex > maxRow)
{
continue;
}
switch (cell.ID)
{
case BIFFRECORDTYPE.INTEGER:
case BIFFRECORDTYPE.INTEGER_OLD:
dt.Rows[cell.RowIndex][cell.ColumnIndex] = ((XlsBiffIntegerCell)cell).Value.ToString();
break;
case BIFFRECORDTYPE.NUMBER:
case BIFFRECORDTYPE.NUMBER_OLD:
dt.Rows[cell.RowIndex][cell.ColumnIndex] = FormatNumber(((XlsBiffNumberCell)cell).Value);
break;
case BIFFRECORDTYPE.LABEL:
case BIFFRECORDTYPE.LABEL_OLD:
case BIFFRECORDTYPE.RSTRING:
dt.Rows[cell.RowIndex][cell.ColumnIndex] = ((XlsBiffLabelCell)cell).Value;
break;
case BIFFRECORDTYPE.LABELSST:
{
string tmp = m_globals.SST.GetString(((XlsBiffLabelSSTCell)cell).SSTIndex);
dt.Rows[cell.RowIndex][cell.ColumnIndex] = tmp;
}
break;
case BIFFRECORDTYPE.RK:
dt.Rows[cell.RowIndex][cell.ColumnIndex] = FormatNumber(((XlsBiffRKCell)cell).Value);
break;
case BIFFRECORDTYPE.MULRK:
for (ushort j = cell.ColumnIndex; j <= ((XlsBiffMulRKCell)cell).LastColumnIndex; j++)
{
dt.Rows[cell.RowIndex][j] = FormatNumber(((XlsBiffMulRKCell)cell).GetValue(j));
}
break;
case BIFFRECORDTYPE.BLANK:
case BIFFRECORDTYPE.BLANK_OLD:
case BIFFRECORDTYPE.MULBLANK:
// Skip blank cells
break;
case BIFFRECORDTYPE.FORMULA:
case BIFFRECORDTYPE.FORMULA_OLD:
((XlsBiffFormulaCell)cell).UseEncoding = m_encoding;
object val = ((XlsBiffFormulaCell)cell).Value;
if (val == null)
{
val = string.Empty;
}
else if (val is FORMULAERROR)
{
val = "#" + ((FORMULAERROR)val).ToString();
}
else if (val is double)
{
val = FormatNumber((double)val);
}
dt.Rows[cell.RowIndex][cell.ColumnIndex] = val.ToString();
break;
default:
break;
}
}
}
dt.EndLoadData();
}
else
{
return(false);
}
return(true);
}
private bool ReadWorksheet(XlsWorksheet sheet)
{
m_stream.Seek((int)sheet.DataOffset, SeekOrigin.Begin);
XlsBiffBOF bof = m_stream.Read() as XlsBiffBOF;
if (bof == null || bof.Type != BIFFTYPE.Worksheet)
{
return(false);
}
XlsBiffIndex idx = m_stream.Read() as XlsBiffIndex;
if (null == idx)
{
return(false);
}
idx.IsV8 = IsV8();
DataTable dt = new DataTable(sheet.Name);
XlsBiffRecord trec;
XlsBiffDimensions dims = null;
do
{
trec = m_stream.Read();
if (trec.ID == BIFFRECORDTYPE.DIMENSIONS)
{
dims = (XlsBiffDimensions)trec;
break;
}
} while (trec != null && trec.ID != BIFFRECORDTYPE.ROW);
int maxCol = 256;
if (dims != null)
{
dims.IsV8 = IsV8();
maxCol = dims.LastColumn - 1;
sheet.Dimensions = dims;
}
InitializeColumns(ref dt, maxCol);
sheet.Data = dt;
uint maxRow = idx.LastExistingRow;
if (idx.LastExistingRow <= idx.FirstExistingRow)
{
return(true);
}
dt.BeginLoadData();
for (int i = 0; i < maxRow; i++)
{
dt.Rows.Add(dt.NewRow());
}
uint[] dbCellAddrs = idx.DbCellAddresses;
for (int i = 0; i < dbCellAddrs.Length; i++)
{
XlsBiffDbCell dbCell = (XlsBiffDbCell)m_stream.ReadAt((int)dbCellAddrs[i]);
XlsBiffRow row = null;
int offs = dbCell.RowAddress;
do
{
row = m_stream.ReadAt(offs) as XlsBiffRow;
if (row == null)
{
break;
}
offs += row.Size;
} while (null != row);
while (true)
{
XlsBiffRecord rec = m_stream.ReadAt(offs);
offs += rec.Size;
if (rec is XlsBiffDbCell)
{
break;
}
if (rec is XlsBiffEOF)
{
break;
}
XlsBiffBlankCell cell = rec as XlsBiffBlankCell;
if (cell == null)
{
continue;
}
if (cell.ColumnIndex >= maxCol)
{
continue;
}
if (cell.RowIndex > maxRow)
{
continue;
}
string _sValue;
double _dValue;
switch (cell.ID)
{
case BIFFRECORDTYPE.INTEGER:
case BIFFRECORDTYPE.INTEGER_OLD:
dt.Rows[cell.RowIndex][cell.ColumnIndex] = ((XlsBiffIntegerCell)cell).Value.ToString();
break;
case BIFFRECORDTYPE.NUMBER:
case BIFFRECORDTYPE.NUMBER_OLD:
_dValue = ((XlsBiffNumberCell)cell).Value;
if ((_sValue = TryConvertOADate(_dValue, cell.XFormat)) != null)
{
dt.Rows[cell.RowIndex][cell.ColumnIndex] = _sValue;
}
else
{
dt.Rows[cell.RowIndex][cell.ColumnIndex] = _dValue;
}
break;
case BIFFRECORDTYPE.LABEL:
case BIFFRECORDTYPE.LABEL_OLD:
case BIFFRECORDTYPE.RSTRING:
dt.Rows[cell.RowIndex][cell.ColumnIndex] = ((XlsBiffLabelCell)cell).Value;
break;
case BIFFRECORDTYPE.LABELSST:
string tmp = m_globals.SST.GetString(((XlsBiffLabelSSTCell)cell).SSTIndex);
dt.Rows[cell.RowIndex][cell.ColumnIndex] = tmp;
break;
case BIFFRECORDTYPE.RK:
_dValue = ((XlsBiffRKCell)cell).Value;
if ((_sValue = TryConvertOADate(_dValue, cell.XFormat)) != null)
{
dt.Rows[cell.RowIndex][cell.ColumnIndex] = _sValue;
}
else
{
dt.Rows[cell.RowIndex][cell.ColumnIndex] = _dValue;
}
break;
case BIFFRECORDTYPE.MULRK:
XlsBiffMulRKCell _rkCell = (XlsBiffMulRKCell)cell;
for (ushort j = cell.ColumnIndex; j <= _rkCell.LastColumnIndex; j++)
{
dt.Rows[cell.RowIndex][j] = _rkCell.GetValue(j);
}
break;
case BIFFRECORDTYPE.BLANK:
case BIFFRECORDTYPE.BLANK_OLD:
case BIFFRECORDTYPE.MULBLANK:
// Skip blank cells
break;
case BIFFRECORDTYPE.FORMULA:
case BIFFRECORDTYPE.FORMULA_OLD:
object _oValue = ((XlsBiffFormulaCell)cell).Value;
if (null != _oValue && _oValue is FORMULAERROR)
{
_oValue = null;
}
if (null != _oValue &&
(_sValue = TryConvertOADate(_oValue, cell.XFormat)) != null)
{
dt.Rows[cell.RowIndex][cell.ColumnIndex] = _sValue;
}
else
{
dt.Rows[cell.RowIndex][cell.ColumnIndex] = _oValue;
}
break;
default:
break;
}
}
}
dt.EndLoadData();
if (m_PromoteToColumns)
{
RemapColumnsNames(ref dt, dt.Rows[0].ItemArray);
dt.Rows.RemoveAt(0);
dt.AcceptChanges();
}
return(true);
}
