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;
}
#region Если в текущем файле MS Biff нет индекса или он не находится в самом начале то основные данные в таблицах не находятся и выводится только минимум.
//if (null == idx)
//{
// // There is a record before the index! Chech his type and see the MS Biff Documentation
// return false;
//}
#endregion
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 void readWorkBookGlobals()
{
//Read Header
try
{
m_hdr = XlsHeader.ReadHeader(m_file);
}
catch (HeaderException ex)
{
fail(ex.Message);
return;
}
catch (FormatException ex)
{
fail(ex.Message);
return;
}
XlsRootDirectory dir = new XlsRootDirectory(m_hdr);
XlsDirectoryEntry workbookEntry = dir.FindEntry(WORKBOOK) ?? dir.FindEntry(BOOK);
if (workbookEntry == null)
{
fail(Errors.ErrorStreamWorkbookNotFound); return;
}
if (workbookEntry.EntryType != STGTY.STGTY_STREAM)
{
fail(Errors.ErrorWorkbookIsNotStream); return;
}
m_stream = new XlsBiffStream(m_hdr, workbookEntry.StreamFirstSector, workbookEntry.IsEntryMiniStream, dir);
m_globals = new XlsWorkbookGlobals();
m_stream.Seek(0, SeekOrigin.Begin);
XlsBiffRecord rec = m_stream.Read();
XlsBiffBOF bof = rec as XlsBiffBOF;
if (bof == null || bof.Type != BIFFTYPE.WorkbookGlobals)
{
fail(Errors.ErrorWorkbookGlobalsInvalidData); return;
}
bool sst = false;
m_version = bof.Version;
m_sheets = new List <XlsWorksheet>();
while (null != (rec = m_stream.Read()))
{
switch (rec.ID)
{
case BIFFRECORDTYPE.INTERFACEHDR:
m_globals.InterfaceHdr = (XlsBiffInterfaceHdr)rec;
break;
case BIFFRECORDTYPE.BOUNDSHEET:
XlsBiffBoundSheet sheet = (XlsBiffBoundSheet)rec;
if (sheet.Type != XlsBiffBoundSheet.SheetType.Worksheet)
{
break;
}
sheet.IsV8 = isV8();
sheet.UseEncoding = m_encoding;
m_sheets.Add(new XlsWorksheet(m_globals.Sheets.Count, sheet));
m_globals.Sheets.Add(sheet);
break;
case BIFFRECORDTYPE.MMS:
m_globals.MMS = rec;
break;
case BIFFRECORDTYPE.COUNTRY:
m_globals.Country = rec;
break;
case BIFFRECORDTYPE.CODEPAGE:
m_globals.CodePage = (XlsBiffSimpleValueRecord)rec;
try
{
m_encoding = Encoding.GetEncoding(m_globals.CodePage.Value);
}
catch (ArgumentException)
{
// Warning - Password protection
}
break;
case BIFFRECORDTYPE.FONT:
case BIFFRECORDTYPE.FONT_V34:
m_globals.Fonts.Add(rec);
break;
case BIFFRECORDTYPE.FORMAT_V23:
{
var fmt = (XlsBiffFormatString)rec;
fmt.UseEncoding = m_encoding;
m_globals.Formats.Add((ushort)m_globals.Formats.Count, fmt);
}
break;
case BIFFRECORDTYPE.FORMAT:
{
var fmt = (XlsBiffFormatString)rec;
m_globals.Formats.Add(fmt.Index, fmt);
}
break;
case BIFFRECORDTYPE.XF:
case BIFFRECORDTYPE.XF_V4:
case BIFFRECORDTYPE.XF_V3:
case BIFFRECORDTYPE.XF_V2:
m_globals.ExtendedFormats.Add(rec);
break;
case BIFFRECORDTYPE.SST:
m_globals.SST = (XlsBiffSST)rec;
sst = true;
break;
case BIFFRECORDTYPE.CONTINUE:
if (!sst)
{
break;
}
XlsBiffContinue contSST = (XlsBiffContinue)rec;
m_globals.SST.Append(contSST);
break;
case BIFFRECORDTYPE.EXTSST:
m_globals.ExtSST = rec;
sst = false;
break;
case BIFFRECORDTYPE.PROTECT:
case BIFFRECORDTYPE.PASSWORD:
case BIFFRECORDTYPE.PROT4REVPASSWORD:
//IsProtected
break;
case BIFFRECORDTYPE.EOF:
if (m_globals.SST != null)
{
m_globals.SST.ReadStrings();
}
return;
default:
continue;
}
}
}