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 bool moveToNextRecordNoIndex()
{
XlsBiffRow currentRowRecord = this.m_currentRowRecord;
if (currentRowRecord == null)
{
return(false);
}
if (currentRowRecord.RowIndex < this.m_depth)
{
this.m_stream.Seek(currentRowRecord.Offset + currentRowRecord.Size, SeekOrigin.Begin);
do
{
if (this.m_stream.Position >= this.m_stream.Size)
{
return(false);
}
XlsBiffRecord record = this.m_stream.Read();
if (record is XlsBiffEOF)
{
return(false);
}
currentRowRecord = record as XlsBiffRow;
}while ((currentRowRecord == null) || (currentRowRecord.RowIndex < this.m_depth));
}
this.m_currentRowRecord = currentRowRecord;
XlsBiffBlankCell cell = null;
do
{
if (this.m_stream.Position >= this.m_stream.Size)
{
return(false);
}
XlsBiffRecord record2 = this.m_stream.Read();
if (record2 is XlsBiffEOF)
{
return(false);
}
if (record2.IsCell)
{
XlsBiffBlankCell cell2 = record2 as XlsBiffBlankCell;
if ((cell2 != null) && (cell2.RowIndex == this.m_currentRowRecord.RowIndex))
{
cell = cell2;
}
}
}while (cell == null);
this.m_cellOffset = cell.Offset;
this.m_canRead = this.readWorkSheetRow();
return(this.m_canRead);
}
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)
{
var startCell = (XlsBiffDbCell)m_stream.ReadAt(startOffset);
XlsBiffRow row = null;
var 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 moveToNextRecordNoIndex()
{
//seek from current row record to start of cell data where that cell relates to the next row record
XlsBiffRow rowRecord = m_currentRowRecord;
if (rowRecord == null)
{
return(false);
}
if (rowRecord.RowIndex < m_depth)
{
m_stream.Seek(rowRecord.Offset + rowRecord.Size, SeekOrigin.Begin);
do
{
if (m_stream.Position >= m_stream.Size)
{
return(false);
}
var record = m_stream.Read();
if (record is XlsBiffEOF)
{
return(false);
}
rowRecord = record as XlsBiffRow;
} while (rowRecord == null || rowRecord.RowIndex < m_depth);
}
m_currentRowRecord = rowRecord;
//m_depth = m_currentRowRecord.RowIndex;
//we have now found the row record for the new row, the we need to seek forward to the first cell record
XlsBiffBlankCell cell = null;
do
{
if (m_stream.Position >= m_stream.Size)
{
return(false);
}
var record = m_stream.Read();
if (record is XlsBiffEOF)
{
return(false);
}
if (record.IsCell)
{
var candidateCell = record as XlsBiffBlankCell;
if (candidateCell != null)
{
if (candidateCell.RowIndex == m_currentRowRecord.RowIndex)
{
cell = candidateCell;
}
}
}
} while (cell == null);
m_cellOffset = cell.Offset;
m_canRead = readWorkSheetRow();
//read last row
//if (!m_canRead && m_depth > 0) m_canRead = true;
//if (!m_canRead && m_dbCellAddrsIndex < (m_dbCellAddrs.Length - 1))
//{
// m_dbCellAddrsIndex++;
// m_cellOffset = findFirstDataCellOffset((int)m_dbCellAddrs[m_dbCellAddrsIndex]);
// m_canRead = readWorkSheetRow();
//}
return(m_canRead);
}
private bool readWorkSheetGlobals(XlsWorksheet sheet, out XlsBiffIndex idx, out XlsBiffRow row)
{
idx = null;
row = null;
m_stream.Seek((int)sheet.DataOffset, SeekOrigin.Begin);
XlsBiffBOF bof = m_stream.Read() as XlsBiffBOF;
if (bof == null || bof.Type != BIFFTYPE.Worksheet)
{
return(false);
}
//DumpBiffRecords();
XlsBiffRecord rec = m_stream.Read();
if (rec == null)
{
return(false);
}
if (rec is XlsBiffIndex)
{
idx = rec as XlsBiffIndex;
}
else if (rec is XlsBiffUncalced)
{
// Sometimes this come before the index...
idx = m_stream.Read() as XlsBiffIndex;
}
//if (null == idx)
//{
// // There is a record before the index! Chech his type and see the MS Biff Documentation
// return false;
//}
if (idx != null)
{
idx.IsV8 = isV8();
LogManager.Log(this).Debug("INDEX IsV8={0}", idx.IsV8);
}
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);
//if we are already on row record then set that as the row, otherwise step forward till we get to a row record
if (trec.ID == BIFFRECORDTYPE.ROW)
{
row = (XlsBiffRow)trec;
}
XlsBiffRow rowRecord = null;
while (rowRecord == null)
{
if (m_stream.Position >= m_stream.Size)
{
break;
}
var thisRec = m_stream.Read();
LogManager.Log(this).Debug("finding rowRecord offset {0}, rec: {1}", thisRec.Offset, thisRec.ID);
if (thisRec is XlsBiffEOF)
{
break;
}
rowRecord = thisRec as XlsBiffRow;
}
if (rowRecord != null)
{
LogManager.Log(this).Debug("Got row {0}, rec: id={1},rowindex={2}, rowColumnStart={3}, rowColumnEnd={4}", rowRecord.Offset, rowRecord.ID, rowRecord.RowIndex, rowRecord.FirstDefinedColumn, rowRecord.LastDefinedColumn);
}
row = rowRecord;
if (dims != null)
{
dims.IsV8 = isV8();
LogManager.Log(this).Debug("dims IsV8={0}", dims.IsV8);
m_maxCol = dims.LastColumn - 1;
//handle case where sheet reports last column is 1 but there are actually more
if (m_maxCol <= 0 && rowRecord != null)
{
m_maxCol = rowRecord.LastDefinedColumn;
}
m_maxRow = (int)dims.LastRow;
sheet.Dimensions = dims;
}
else
{
m_maxCol = 256;
m_maxRow = (int)idx.LastExistingRow;
}
if (idx != null && idx.LastExistingRow <= idx.FirstExistingRow)
{
return(false);
}
else if (row == null)
{
return(false);
}
m_depth = 0;
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);
}
private bool readWorkSheetGlobals(XlsWorksheet sheet, out XlsBiffIndex idx, out XlsBiffRow row)
{
idx = null;
row = null;
m_stream.Seek((int)sheet.DataOffset, SeekOrigin.Begin);
XlsBiffBOF bof = m_stream.Read() as XlsBiffBOF;
if (bof == null || bof.Type != BIFFTYPE.Worksheet)
{
return(false);
}
//DumpBiffRecords();
XlsBiffRecord rec = m_stream.Read();
if (rec == null)
{
return(false);
}
if (rec is XlsBiffIndex)
{
idx = rec as XlsBiffIndex;
}
else if (rec is XlsBiffUncalced)
{
// Sometimes this come before the index...
idx = m_stream.Read() as XlsBiffIndex;
}
//if (null == idx)
//{
// // There is a record before the index! Chech his type and see the MS Biff Documentation
// return false;
//}
if (idx != null)
{
idx.IsV8 = isV8();
}
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);
//if we are already on row record then set that as the row, otherwise step forward till we get to a row record
if (trec.ID == BIFFRECORDTYPE.ROW)
{
row = (XlsBiffRow)trec;
}
XlsBiffRow rowRecord = null;
while (rowRecord == null)
{
if (m_stream.Position >= m_stream.Size)
{
break;
}
var thisRec = m_stream.Read();
if (thisRec is XlsBiffEOF)
{
break;
}
rowRecord = thisRec as XlsBiffRow;
}
row = rowRecord;
m_maxCol = 256;
if (dims != null)
{
dims.IsV8 = isV8();
m_maxCol = dims.LastColumn - 1;
sheet.Dimensions = dims;
}
m_maxRow = idx == null ? (int)dims.LastRow : (int)idx.LastExistingRow;
if (idx != null && idx.LastExistingRow <= idx.FirstExistingRow)
{
return(false);
}
else if (row == null)
{
return(false);
}
m_depth = 0;
return(true);
}
private bool readWorkSheetGlobals(XlsWorksheet sheet, out XlsBiffIndex idx, out XlsBiffRow row)
{
XlsBiffRecord record2;
idx = null;
row = null;
this.m_stream.Seek((int)sheet.DataOffset, SeekOrigin.Begin);
XlsBiffBOF fbof = this.m_stream.Read() as XlsBiffBOF;
if ((fbof == null) || (fbof.Type != BIFFTYPE.Worksheet))
{
return(false);
}
XlsBiffRecord record = this.m_stream.Read();
if (record == null)
{
return(false);
}
if (record is XlsBiffIndex)
{
idx = record as XlsBiffIndex;
}
else if (record is XlsBiffUncalced)
{
idx = this.m_stream.Read() as XlsBiffIndex;
}
if (idx != null)
{
idx.IsV8 = this.isV8();
}
XlsBiffDimensions dimensions = null;
do
{
record2 = this.m_stream.Read();
if (record2.ID == BIFFRECORDTYPE.DIMENSIONS)
{
dimensions = (XlsBiffDimensions)record2;
break;
}
}while ((record2 != null) && (record2.ID != BIFFRECORDTYPE.ROW));
if (record2.ID == BIFFRECORDTYPE.ROW)
{
row = (XlsBiffRow)record2;
}
XlsBiffRow row2 = null;
while (row2 == null)
{
if (this.m_stream.Position >= this.m_stream.Size)
{
break;
}
XlsBiffRecord record3 = this.m_stream.Read();
if (record3 is XlsBiffEOF)
{
break;
}
row2 = record3 as XlsBiffRow;
}
row = row2;
this.m_maxCol = 0x100;
if (dimensions != null)
{
dimensions.IsV8 = this.isV8();
this.m_maxCol = dimensions.LastColumn - 1;
sheet.Dimensions = dimensions;
}
this.m_maxRow = (idx == null) ? ((int)dimensions.LastRow) : ((int)idx.LastExistingRow);
if ((idx != null) && (idx.LastExistingRow <= idx.FirstExistingRow))
{
return(false);
}
if (row == null)
{
return(false);
}
this.m_depth = 0;
return(true);
}
private bool moveToNextRecordNoIndex()
{
//seek from current row record to start of cell data where that cell relates to the next row record
XlsBiffRow rowRecord = m_currentRowRecord;
if (rowRecord == null)
{
return(false);
}
if (rowRecord.RowIndex < m_depth)
{
m_stream.Seek(rowRecord.Offset + rowRecord.Size, SeekOrigin.Begin);
do
{
if (m_stream.Position >= m_stream.Size)
{
return(false);
}
XlsBiffRecord record = m_stream.Read();
if (record is XlsBiffEOF)
{
return(false);
}
rowRecord = record as XlsBiffRow;
} while (rowRecord == null || rowRecord.RowIndex < m_depth);
}
m_currentRowRecord = rowRecord;
//we have now found the row record for the new row, the we need to seek forward to the first cell record
XlsBiffBlankCell cell = null;
do
{
if (m_stream.Position >= m_stream.Size)
{
return(false);
}
XlsBiffRecord record = m_stream.Read();
if (record is XlsBiffEOF)
{
return(false);
}
if (record.IsCell)
{
var candidateCell = record as XlsBiffBlankCell;
if (candidateCell != null)
{
if (candidateCell.RowIndex == m_currentRowRecord.RowIndex)
{
cell = candidateCell;
}
}
}
} while (cell == null);
m_cellOffset = cell.Offset;
m_canRead = readWorkSheetRow();
return(m_canRead);
}
private bool readWorkSheetGlobals(XlsWorksheet sheet, out XlsBiffIndex idx, out XlsBiffRow row)
{
idx = null;
row = null;
m_stream.Seek((int)sheet.DataOffset, SeekOrigin.Begin);
// Read BOF
var bof = m_stream.Read() as XlsBiffBOF;
if (bof == null || bof.Type != BIFFTYPE.Worksheet)
{
return(false);
}
// Read Index
XlsBiffRecord rec = m_stream.Read();
if (rec == null)
{
return(false);
}
if (rec is XlsBiffIndex)
{
idx = rec as XlsBiffIndex;
}
else if (rec is XlsBiffUncalced)
{
// Sometimes this come before the index...
idx = m_stream.Read() as XlsBiffIndex;
}
if (idx != null)
{
idx.IsV8 = isV8();
}
// Read Demension
XlsBiffRecord trec;
XlsBiffDimensions dims = null;
do
{
trec = m_stream.Read();
if (trec.ID == BIFFRECORDTYPE.DIMENSIONS)
{
dims = (XlsBiffDimensions)trec;
break;
}
} while (trec.ID != BIFFRECORDTYPE.ROW);
// Read Row
// if we are already on row record then set that as the row,
// otherwise step forward till we get to a row record
if (trec.ID == BIFFRECORDTYPE.ROW)
{
row = (XlsBiffRow)trec;
}
XlsBiffRow rowRecord = null;
while (rowRecord == null)
{
if (m_stream.Position >= m_stream.Size)
{
break;
}
XlsBiffRecord thisRec = m_stream.Read();
if (thisRec is XlsBiffEOF)
{
break;
}
rowRecord = thisRec as XlsBiffRow;
}
row = rowRecord;
if (dims != null)
{
dims.IsV8 = isV8();
m_maxCol = dims.LastColumn - 1;
//handle case where sheet reports last column is 1 but there are actually more
if (m_maxCol <= 0 && rowRecord != null)
{
m_maxCol = rowRecord.LastDefinedColumn;
}
m_maxRow = (int)dims.LastRow;
sheet.Dimensions = dims;
}
else
{
Debug.Assert(idx != null);
m_maxCol = 256;
m_maxRow = (int)idx.LastExistingRow;
}
if (idx != null && idx.LastExistingRow <= idx.FirstExistingRow)
{
return(false);
}
else if (row == null)
{
return(false);
}
m_depth = 0;
// Read Hyper Link
bool hasFound = false;
while (true)
{
if (m_stream.Position >= m_stream.Size)
{
break;
}
XlsBiffRecord thisRecord = m_stream.Read();
if (thisRecord is XlsBiffEOF)
{
break;
}
var hyperLink = thisRecord as XlsBiffHyperLink;
if (hyperLink != null)
{
hasFound = true;
m_globals.AddHyperLink(hyperLink);
}
if (hasFound && hyperLink == null)
{
break;
}
}
return(true);
}