private static string FormatDoubleAsHex(double d)
{
long l = BitConverter.DoubleToInt64Bits(d);
StringBuilder sb = new StringBuilder(20);
sb.Append(HexDump.LongToHex(l)).Append('L');
return(sb.ToString());
}
/**
* Just so there is no ambiguity. The two double values have to be exactly equal
*/
private static void assertDouble(double a, double b)
{
long bitsA = BitConverter.DoubleToInt64Bits(a);
long bitsB = BitConverter.DoubleToInt64Bits(b);
if (bitsA != bitsB)
{
throw new ComparisonFailure("value different to expected",
new String(HexDump.LongToHex(bitsA)), new String(HexDump.LongToHex(bitsB)));
}
}
public string FormatAsString()
{
StringBuilder sb = new StringBuilder(36);
int PREFIX_LEN = "0x".Length;
sb.Append(HexDump.IntToHex(_d1), PREFIX_LEN, 8);
sb.Append("-");
sb.Append(HexDump.ShortToHex(_d2), PREFIX_LEN, 4);
sb.Append("-");
sb.Append(HexDump.ShortToHex(_d3), PREFIX_LEN, 4);
sb.Append("-");
char[] d4Chars = HexDump.LongToHex(D4);
sb.Append(d4Chars, PREFIX_LEN, 4);
sb.Append("-");
sb.Append(d4Chars, PREFIX_LEN + 4, 12);
return(sb.ToString());
}
private static String LongToHex(long value)
{
return(new String(HexDump.LongToHex(value)));
}
public void ConfirmLong(long expVal)
{
cmp(HexDump.LongToHex(expVal), HexDump.LongToHex(_bds.ReadLong()));
}
public void PrivateHeaderBlock(byte[] data)
{
_data = data;
long signature = LittleEndian.GetLong(_data, _signature_offset);
if (signature != _signature)
{
if (cmp(POIFSConstants.OOXML_FILE_HEADER, data))
{
throw new OfficeXmlFileException("The supplied data appears to be in the Office 2007+ XML. "
+ "You are calling the part of POI that deals with OLE2 Office Documents. "
+ "You need to call a different part of POI to process this data (eg XSSF instead of HSSF)");
}
if (cmp(POIFSConstants.RAW_XML_FILE_HEADER, data))
{
throw new NotOLE2FileException("The supplied data appears to be a raw XML file. "
+ "Formats such as Office 2003 XML are not supported");
}
// BIFF2 raw stream
if (cmp(MAGIC_BIFF2, data))
{
throw new OldExcelFormatException("The supplied data appears to be in BIFF2 format. "
+ "HSSF only supports the BIFF8 format, try OldExcelExtractor");
}
// BIFF3 raw stream
if (cmp(MAGIC_BIFF3, data))
{
throw new OldExcelFormatException("The supplied data appears to be in BIFF3 format. "
+ "HSSF only supports the BIFF8 format, try OldExcelExtractor");
}
// BIFF4 raw stream
if (cmp(MAGIC_BIFF4a, data) || cmp(MAGIC_BIFF4b, data))
{
throw new OldExcelFormatException("The supplied data appears to be in BIFF4 format. "
+ "HSSF only supports the BIFF8 format, try OldExcelExtractor");
}
// Give a generic error if the OLE2 signature isn't found
throw new NotOLE2FileException("Invalid header signature; read "
+ HexDump.LongToHex(signature) + ", expected "
+ HexDump.LongToHex(_signature) + " - Your file appears "
+ "not to be a valid OLE2 document");
}
if (_data[30] == 12)
{
bigBlockSize = POIFSConstants.LARGER_BIG_BLOCK_SIZE_DETAILS;
}
else if (_data[30] == 9)
{
bigBlockSize = POIFSConstants.SMALLER_BIG_BLOCK_SIZE_DETAILS;
}
else
{
throw new IOException("Unsupported blocksize (2^" + _data[30] + "). Expected 2^9 or 2^12.");
}
// Setup the fields to read and write the counts and starts
_bat_count = new IntegerField(HeaderBlockConstants._bat_count_offset, _data).Value;
_property_start = new IntegerField(HeaderBlockConstants._property_start_offset, _data).Value;
_sbat_start = new IntegerField(HeaderBlockConstants._sbat_start_offset, _data).Value;
_sbat_count = new IntegerField(HeaderBlockConstants._sbat_block_count_offset, _data).Value;
_xbat_start = new IntegerField(HeaderBlockConstants._xbat_start_offset, _data).Value;
_xbat_count = new IntegerField(HeaderBlockConstants._xbat_count_offset, _data).Value;
}
